1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2014 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
38 #include "elf-linux-psinfo.h"
40 typedef enum split16_format_type
47 /* RELA relocations are used here. */
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
61 /* The name of the dynamic interpreter. This is put in the .interp
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE 4*4
72 #define TLS_GET_ADDR_GLINK_SIZE 12*4
74 /* VxWorks uses its own plt layout, filled in by the static linker. */
76 /* The standard VxWorks PLT entry. */
77 #define VXWORKS_PLT_ENTRY_SIZE 32
78 static const bfd_vma ppc_elf_vxworks_plt_entry
79 [VXWORKS_PLT_ENTRY_SIZE / 4] =
81 0x3d800000, /* lis r12,0 */
82 0x818c0000, /* lwz r12,0(r12) */
83 0x7d8903a6, /* mtctr r12 */
84 0x4e800420, /* bctr */
85 0x39600000, /* li r11,0 */
86 0x48000000, /* b 14 <.PLT0resolve+0x4> */
90 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 [VXWORKS_PLT_ENTRY_SIZE / 4] =
93 0x3d9e0000, /* addis r12,r30,0 */
94 0x818c0000, /* lwz r12,0(r12) */
95 0x7d8903a6, /* mtctr r12 */
96 0x4e800420, /* bctr */
97 0x39600000, /* li r11,0 */
98 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
100 0x60000000, /* nop */
103 /* The initial VxWorks PLT entry. */
104 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105 static const bfd_vma ppc_elf_vxworks_plt0_entry
106 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
108 0x3d800000, /* lis r12,0 */
109 0x398c0000, /* addi r12,r12,0 */
110 0x800c0008, /* lwz r0,8(r12) */
111 0x7c0903a6, /* mtctr r0 */
112 0x818c0004, /* lwz r12,4(r12) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
117 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
120 0x819e0008, /* lwz r12,8(r30) */
121 0x7d8903a6, /* mtctr r12 */
122 0x819e0004, /* lwz r12,4(r30) */
123 0x4e800420, /* bctr */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
130 /* For executables, we have some additional relocations in
131 .rela.plt.unloaded, for the kernel loader. */
133 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
134 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135 /* The number of relocations in the PLTResolve slot. */
136 #define VXWORKS_PLTRESOLVE_RELOCS 2
137 /* The number of relocations in the PLTResolve slot when when creating
139 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
141 /* Some instructions. */
142 #define ADDIS_11_11 0x3d6b0000
143 #define ADDIS_11_30 0x3d7e0000
144 #define ADDIS_12_12 0x3d8c0000
145 #define ADDI_11_11 0x396b0000
146 #define ADD_0_11_11 0x7c0b5a14
147 #define ADD_3_12_2 0x7c6c1214
148 #define ADD_11_0_11 0x7d605a14
150 #define BCL_20_31 0x429f0005
151 #define BCTR 0x4e800420
152 #define BEQLR 0x4d820020
153 #define CMPWI_11_0 0x2c0b0000
154 #define LIS_11 0x3d600000
155 #define LIS_12 0x3d800000
156 #define LWZU_0_12 0x840c0000
157 #define LWZ_0_12 0x800c0000
158 #define LWZ_11_3 0x81630000
159 #define LWZ_11_11 0x816b0000
160 #define LWZ_11_30 0x817e0000
161 #define LWZ_12_3 0x81830000
162 #define LWZ_12_12 0x818c0000
163 #define MR_0_3 0x7c601b78
164 #define MR_3_0 0x7c030378
165 #define MFLR_0 0x7c0802a6
166 #define MFLR_12 0x7d8802a6
167 #define MTCTR_0 0x7c0903a6
168 #define MTCTR_11 0x7d6903a6
169 #define MTLR_0 0x7c0803a6
170 #define NOP 0x60000000
171 #define SUB_11_11_12 0x7d6c5850
173 /* Offset of tp and dtp pointers from start of TLS block. */
174 #define TP_OFFSET 0x7000
175 #define DTP_OFFSET 0x8000
177 /* The value of a defined global symbol. */
178 #define SYM_VAL(SYM) \
179 ((SYM)->root.u.def.section->output_section->vma \
180 + (SYM)->root.u.def.section->output_offset \
181 + (SYM)->root.u.def.value)
183 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
185 static reloc_howto_type ppc_elf_howto_raw[] = {
186 /* This reloc does nothing. */
187 HOWTO (R_PPC_NONE, /* type */
189 2, /* size (0 = byte, 1 = short, 2 = long) */
191 FALSE, /* pc_relative */
193 complain_overflow_dont, /* complain_on_overflow */
194 bfd_elf_generic_reloc, /* special_function */
195 "R_PPC_NONE", /* name */
196 FALSE, /* partial_inplace */
199 FALSE), /* pcrel_offset */
201 /* A standard 32 bit relocation. */
202 HOWTO (R_PPC_ADDR32, /* type */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
206 FALSE, /* pc_relative */
208 complain_overflow_dont, /* complain_on_overflow */
209 bfd_elf_generic_reloc, /* special_function */
210 "R_PPC_ADDR32", /* name */
211 FALSE, /* partial_inplace */
213 0xffffffff, /* dst_mask */
214 FALSE), /* pcrel_offset */
216 /* An absolute 26 bit branch; the lower two bits must be zero.
217 FIXME: we don't check that, we just clear them. */
218 HOWTO (R_PPC_ADDR24, /* type */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
222 FALSE, /* pc_relative */
224 complain_overflow_signed, /* complain_on_overflow */
225 bfd_elf_generic_reloc, /* special_function */
226 "R_PPC_ADDR24", /* name */
227 FALSE, /* partial_inplace */
229 0x3fffffc, /* dst_mask */
230 FALSE), /* pcrel_offset */
232 /* A standard 16 bit relocation. */
233 HOWTO (R_PPC_ADDR16, /* type */
235 1, /* size (0 = byte, 1 = short, 2 = long) */
237 FALSE, /* pc_relative */
239 complain_overflow_bitfield, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_PPC_ADDR16", /* name */
242 FALSE, /* partial_inplace */
244 0xffff, /* dst_mask */
245 FALSE), /* pcrel_offset */
247 /* A 16 bit relocation without overflow. */
248 HOWTO (R_PPC_ADDR16_LO, /* type */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
252 FALSE, /* pc_relative */
254 complain_overflow_dont,/* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_PPC_ADDR16_LO", /* name */
257 FALSE, /* partial_inplace */
259 0xffff, /* dst_mask */
260 FALSE), /* pcrel_offset */
262 /* The high order 16 bits of an address. */
263 HOWTO (R_PPC_ADDR16_HI, /* type */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
267 FALSE, /* pc_relative */
269 complain_overflow_dont, /* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_PPC_ADDR16_HI", /* name */
272 FALSE, /* partial_inplace */
274 0xffff, /* dst_mask */
275 FALSE), /* pcrel_offset */
277 /* The high order 16 bits of an address, plus 1 if the contents of
278 the low 16 bits, treated as a signed number, is negative. */
279 HOWTO (R_PPC_ADDR16_HA, /* type */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
283 FALSE, /* pc_relative */
285 complain_overflow_dont, /* complain_on_overflow */
286 ppc_elf_addr16_ha_reloc, /* special_function */
287 "R_PPC_ADDR16_HA", /* name */
288 FALSE, /* partial_inplace */
290 0xffff, /* dst_mask */
291 FALSE), /* pcrel_offset */
293 /* An absolute 16 bit branch; the lower two bits must be zero.
294 FIXME: we don't check that, we just clear them. */
295 HOWTO (R_PPC_ADDR14, /* type */
297 2, /* size (0 = byte, 1 = short, 2 = long) */
299 FALSE, /* pc_relative */
301 complain_overflow_signed, /* complain_on_overflow */
302 bfd_elf_generic_reloc, /* special_function */
303 "R_PPC_ADDR14", /* name */
304 FALSE, /* partial_inplace */
306 0xfffc, /* dst_mask */
307 FALSE), /* pcrel_offset */
309 /* An absolute 16 bit branch, for which bit 10 should be set to
310 indicate that the branch is expected to be taken. The lower two
311 bits must be zero. */
312 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
316 FALSE, /* pc_relative */
318 complain_overflow_signed, /* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_PPC_ADDR14_BRTAKEN",/* name */
321 FALSE, /* partial_inplace */
323 0xfffc, /* dst_mask */
324 FALSE), /* pcrel_offset */
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is not expected to be taken. The lower
328 two bits must be zero. */
329 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE, /* pc_relative */
335 complain_overflow_signed, /* complain_on_overflow */
336 bfd_elf_generic_reloc, /* special_function */
337 "R_PPC_ADDR14_BRNTAKEN",/* name */
338 FALSE, /* partial_inplace */
340 0xfffc, /* dst_mask */
341 FALSE), /* pcrel_offset */
343 /* A relative 26 bit branch; the lower two bits must be zero. */
344 HOWTO (R_PPC_REL24, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 TRUE, /* pc_relative */
350 complain_overflow_signed, /* complain_on_overflow */
351 bfd_elf_generic_reloc, /* special_function */
352 "R_PPC_REL24", /* name */
353 FALSE, /* partial_inplace */
355 0x3fffffc, /* dst_mask */
356 TRUE), /* pcrel_offset */
358 /* A relative 16 bit branch; the lower two bits must be zero. */
359 HOWTO (R_PPC_REL14, /* type */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
363 TRUE, /* pc_relative */
365 complain_overflow_signed, /* complain_on_overflow */
366 bfd_elf_generic_reloc, /* special_function */
367 "R_PPC_REL14", /* name */
368 FALSE, /* partial_inplace */
370 0xfffc, /* dst_mask */
371 TRUE), /* pcrel_offset */
373 /* A relative 16 bit branch. Bit 10 should be set to indicate that
374 the branch is expected to be taken. The lower two bits must be
376 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
380 TRUE, /* pc_relative */
382 complain_overflow_signed, /* complain_on_overflow */
383 bfd_elf_generic_reloc, /* special_function */
384 "R_PPC_REL14_BRTAKEN", /* name */
385 FALSE, /* partial_inplace */
387 0xfffc, /* dst_mask */
388 TRUE), /* pcrel_offset */
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is not expected to be taken. The lower two bits must
393 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 TRUE, /* pc_relative */
399 complain_overflow_signed, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC_REL14_BRNTAKEN",/* name */
402 FALSE, /* partial_inplace */
404 0xfffc, /* dst_mask */
405 TRUE), /* pcrel_offset */
407 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
409 HOWTO (R_PPC_GOT16, /* type */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE, /* pc_relative */
415 complain_overflow_signed, /* complain_on_overflow */
416 bfd_elf_generic_reloc, /* special_function */
417 "R_PPC_GOT16", /* name */
418 FALSE, /* partial_inplace */
420 0xffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
423 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
425 HOWTO (R_PPC_GOT16_LO, /* type */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
429 FALSE, /* pc_relative */
431 complain_overflow_dont, /* complain_on_overflow */
432 bfd_elf_generic_reloc, /* special_function */
433 "R_PPC_GOT16_LO", /* name */
434 FALSE, /* partial_inplace */
436 0xffff, /* dst_mask */
437 FALSE), /* pcrel_offset */
439 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
441 HOWTO (R_PPC_GOT16_HI, /* type */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
445 FALSE, /* pc_relative */
447 complain_overflow_dont, /* complain_on_overflow */
448 bfd_elf_generic_reloc, /* special_function */
449 "R_PPC_GOT16_HI", /* name */
450 FALSE, /* partial_inplace */
452 0xffff, /* dst_mask */
453 FALSE), /* pcrel_offset */
455 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
457 HOWTO (R_PPC_GOT16_HA, /* type */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
461 FALSE, /* pc_relative */
463 complain_overflow_dont, /* complain_on_overflow */
464 ppc_elf_addr16_ha_reloc, /* special_function */
465 "R_PPC_GOT16_HA", /* name */
466 FALSE, /* partial_inplace */
468 0xffff, /* dst_mask */
469 FALSE), /* pcrel_offset */
471 /* Like R_PPC_REL24, but referring to the procedure linkage table
472 entry for the symbol. */
473 HOWTO (R_PPC_PLTREL24, /* type */
475 2, /* size (0 = byte, 1 = short, 2 = long) */
477 TRUE, /* pc_relative */
479 complain_overflow_signed, /* complain_on_overflow */
480 bfd_elf_generic_reloc, /* special_function */
481 "R_PPC_PLTREL24", /* name */
482 FALSE, /* partial_inplace */
484 0x3fffffc, /* dst_mask */
485 TRUE), /* pcrel_offset */
487 /* This is used only by the dynamic linker. The symbol should exist
488 both in the object being run and in some shared library. The
489 dynamic linker copies the data addressed by the symbol from the
490 shared library into the object, because the object being
491 run has to have the data at some particular address. */
492 HOWTO (R_PPC_COPY, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE, /* pc_relative */
498 complain_overflow_dont, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_PPC_COPY", /* name */
501 FALSE, /* partial_inplace */
504 FALSE), /* pcrel_offset */
506 /* Like R_PPC_ADDR32, but used when setting global offset table
508 HOWTO (R_PPC_GLOB_DAT, /* type */
510 2, /* size (0 = byte, 1 = short, 2 = long) */
512 FALSE, /* pc_relative */
514 complain_overflow_dont, /* complain_on_overflow */
515 bfd_elf_generic_reloc, /* special_function */
516 "R_PPC_GLOB_DAT", /* name */
517 FALSE, /* partial_inplace */
519 0xffffffff, /* dst_mask */
520 FALSE), /* pcrel_offset */
522 /* Marks a procedure linkage table entry for a symbol. */
523 HOWTO (R_PPC_JMP_SLOT, /* type */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
527 FALSE, /* pc_relative */
529 complain_overflow_dont, /* complain_on_overflow */
530 bfd_elf_generic_reloc, /* special_function */
531 "R_PPC_JMP_SLOT", /* name */
532 FALSE, /* partial_inplace */
535 FALSE), /* pcrel_offset */
537 /* Used only by the dynamic linker. When the object is run, this
538 longword is set to the load address of the object, plus the
540 HOWTO (R_PPC_RELATIVE, /* type */
542 2, /* size (0 = byte, 1 = short, 2 = long) */
544 FALSE, /* pc_relative */
546 complain_overflow_dont, /* complain_on_overflow */
547 bfd_elf_generic_reloc, /* special_function */
548 "R_PPC_RELATIVE", /* name */
549 FALSE, /* partial_inplace */
551 0xffffffff, /* dst_mask */
552 FALSE), /* pcrel_offset */
554 /* Like R_PPC_REL24, but uses the value of the symbol within the
555 object rather than the final value. Normally used for
556 _GLOBAL_OFFSET_TABLE_. */
557 HOWTO (R_PPC_LOCAL24PC, /* type */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
561 TRUE, /* pc_relative */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC_LOCAL24PC", /* name */
566 FALSE, /* partial_inplace */
568 0x3fffffc, /* dst_mask */
569 TRUE), /* pcrel_offset */
571 /* Like R_PPC_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC_UADDR32, /* type */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
576 FALSE, /* pc_relative */
578 complain_overflow_dont, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC_UADDR32", /* name */
581 FALSE, /* partial_inplace */
583 0xffffffff, /* dst_mask */
584 FALSE), /* pcrel_offset */
586 /* Like R_PPC_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC_UADDR16, /* type */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE, /* pc_relative */
593 complain_overflow_bitfield, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC_UADDR16", /* name */
596 FALSE, /* partial_inplace */
598 0xffff, /* dst_mask */
599 FALSE), /* pcrel_offset */
601 /* 32-bit PC relative */
602 HOWTO (R_PPC_REL32, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 TRUE, /* pc_relative */
608 complain_overflow_dont, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_REL32", /* name */
611 FALSE, /* partial_inplace */
613 0xffffffff, /* dst_mask */
614 TRUE), /* pcrel_offset */
616 /* 32-bit relocation to the symbol's procedure linkage table.
617 FIXME: not supported. */
618 HOWTO (R_PPC_PLT32, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 FALSE, /* pc_relative */
624 complain_overflow_dont, /* complain_on_overflow */
625 bfd_elf_generic_reloc, /* special_function */
626 "R_PPC_PLT32", /* name */
627 FALSE, /* partial_inplace */
630 FALSE), /* pcrel_offset */
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
633 FIXME: not supported. */
634 HOWTO (R_PPC_PLTREL32, /* type */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
638 TRUE, /* pc_relative */
640 complain_overflow_dont, /* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_PPC_PLTREL32", /* name */
643 FALSE, /* partial_inplace */
646 TRUE), /* pcrel_offset */
648 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
650 HOWTO (R_PPC_PLT16_LO, /* type */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
654 FALSE, /* pc_relative */
656 complain_overflow_dont, /* complain_on_overflow */
657 bfd_elf_generic_reloc, /* special_function */
658 "R_PPC_PLT16_LO", /* name */
659 FALSE, /* partial_inplace */
661 0xffff, /* dst_mask */
662 FALSE), /* pcrel_offset */
664 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
666 HOWTO (R_PPC_PLT16_HI, /* type */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE, /* pc_relative */
672 complain_overflow_dont, /* complain_on_overflow */
673 bfd_elf_generic_reloc, /* special_function */
674 "R_PPC_PLT16_HI", /* name */
675 FALSE, /* partial_inplace */
677 0xffff, /* dst_mask */
678 FALSE), /* pcrel_offset */
680 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
682 HOWTO (R_PPC_PLT16_HA, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE, /* pc_relative */
688 complain_overflow_dont, /* complain_on_overflow */
689 ppc_elf_addr16_ha_reloc, /* special_function */
690 "R_PPC_PLT16_HA", /* name */
691 FALSE, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
696 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
698 HOWTO (R_PPC_SDAREL16, /* type */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
702 FALSE, /* pc_relative */
704 complain_overflow_signed, /* complain_on_overflow */
705 bfd_elf_generic_reloc, /* special_function */
706 "R_PPC_SDAREL16", /* name */
707 FALSE, /* partial_inplace */
709 0xffff, /* dst_mask */
710 FALSE), /* pcrel_offset */
712 /* 16-bit section relative relocation. */
713 HOWTO (R_PPC_SECTOFF, /* type */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
717 FALSE, /* pc_relative */
719 complain_overflow_signed, /* complain_on_overflow */
720 bfd_elf_generic_reloc, /* special_function */
721 "R_PPC_SECTOFF", /* name */
722 FALSE, /* partial_inplace */
724 0xffff, /* dst_mask */
725 FALSE), /* pcrel_offset */
727 /* 16-bit lower half section relative relocation. */
728 HOWTO (R_PPC_SECTOFF_LO, /* type */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
732 FALSE, /* pc_relative */
734 complain_overflow_dont, /* complain_on_overflow */
735 bfd_elf_generic_reloc, /* special_function */
736 "R_PPC_SECTOFF_LO", /* name */
737 FALSE, /* partial_inplace */
739 0xffff, /* dst_mask */
740 FALSE), /* pcrel_offset */
742 /* 16-bit upper half section relative relocation. */
743 HOWTO (R_PPC_SECTOFF_HI, /* type */
745 1, /* size (0 = byte, 1 = short, 2 = long) */
747 FALSE, /* pc_relative */
749 complain_overflow_dont, /* complain_on_overflow */
750 bfd_elf_generic_reloc, /* special_function */
751 "R_PPC_SECTOFF_HI", /* name */
752 FALSE, /* partial_inplace */
754 0xffff, /* dst_mask */
755 FALSE), /* pcrel_offset */
757 /* 16-bit upper half adjusted section relative relocation. */
758 HOWTO (R_PPC_SECTOFF_HA, /* type */
760 1, /* size (0 = byte, 1 = short, 2 = long) */
762 FALSE, /* pc_relative */
764 complain_overflow_dont, /* complain_on_overflow */
765 ppc_elf_addr16_ha_reloc, /* special_function */
766 "R_PPC_SECTOFF_HA", /* name */
767 FALSE, /* partial_inplace */
769 0xffff, /* dst_mask */
770 FALSE), /* pcrel_offset */
772 /* Marker relocs for TLS. */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
777 FALSE, /* pc_relative */
779 complain_overflow_dont, /* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_PPC_TLS", /* name */
782 FALSE, /* partial_inplace */
785 FALSE), /* pcrel_offset */
789 2, /* size (0 = byte, 1 = short, 2 = long) */
791 FALSE, /* pc_relative */
793 complain_overflow_dont, /* complain_on_overflow */
794 bfd_elf_generic_reloc, /* special_function */
795 "R_PPC_TLSGD", /* name */
796 FALSE, /* partial_inplace */
799 FALSE), /* pcrel_offset */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
805 FALSE, /* pc_relative */
807 complain_overflow_dont, /* complain_on_overflow */
808 bfd_elf_generic_reloc, /* special_function */
809 "R_PPC_TLSLD", /* name */
810 FALSE, /* partial_inplace */
813 FALSE), /* pcrel_offset */
815 /* Computes the load module index of the load module that contains the
816 definition of its TLS sym. */
817 HOWTO (R_PPC_DTPMOD32,
819 2, /* size (0 = byte, 1 = short, 2 = long) */
821 FALSE, /* pc_relative */
823 complain_overflow_dont, /* complain_on_overflow */
824 ppc_elf_unhandled_reloc, /* special_function */
825 "R_PPC_DTPMOD32", /* name */
826 FALSE, /* partial_inplace */
828 0xffffffff, /* dst_mask */
829 FALSE), /* pcrel_offset */
831 /* Computes a dtv-relative displacement, the difference between the value
832 of sym+add and the base address of the thread-local storage block that
833 contains the definition of sym, minus 0x8000. */
834 HOWTO (R_PPC_DTPREL32,
836 2, /* size (0 = byte, 1 = short, 2 = long) */
838 FALSE, /* pc_relative */
840 complain_overflow_dont, /* complain_on_overflow */
841 ppc_elf_unhandled_reloc, /* special_function */
842 "R_PPC_DTPREL32", /* name */
843 FALSE, /* partial_inplace */
845 0xffffffff, /* dst_mask */
846 FALSE), /* pcrel_offset */
848 /* A 16 bit dtprel reloc. */
849 HOWTO (R_PPC_DTPREL16,
851 1, /* size (0 = byte, 1 = short, 2 = long) */
853 FALSE, /* pc_relative */
855 complain_overflow_signed, /* complain_on_overflow */
856 ppc_elf_unhandled_reloc, /* special_function */
857 "R_PPC_DTPREL16", /* name */
858 FALSE, /* partial_inplace */
860 0xffff, /* dst_mask */
861 FALSE), /* pcrel_offset */
863 /* Like DTPREL16, but no overflow. */
864 HOWTO (R_PPC_DTPREL16_LO,
866 1, /* size (0 = byte, 1 = short, 2 = long) */
868 FALSE, /* pc_relative */
870 complain_overflow_dont, /* complain_on_overflow */
871 ppc_elf_unhandled_reloc, /* special_function */
872 "R_PPC_DTPREL16_LO", /* name */
873 FALSE, /* partial_inplace */
875 0xffff, /* dst_mask */
876 FALSE), /* pcrel_offset */
878 /* Like DTPREL16_LO, but next higher group of 16 bits. */
879 HOWTO (R_PPC_DTPREL16_HI,
881 1, /* size (0 = byte, 1 = short, 2 = long) */
883 FALSE, /* pc_relative */
885 complain_overflow_dont, /* complain_on_overflow */
886 ppc_elf_unhandled_reloc, /* special_function */
887 "R_PPC_DTPREL16_HI", /* name */
888 FALSE, /* partial_inplace */
890 0xffff, /* dst_mask */
891 FALSE), /* pcrel_offset */
893 /* Like DTPREL16_HI, but adjust for low 16 bits. */
894 HOWTO (R_PPC_DTPREL16_HA,
896 1, /* size (0 = byte, 1 = short, 2 = long) */
898 FALSE, /* pc_relative */
900 complain_overflow_dont, /* complain_on_overflow */
901 ppc_elf_unhandled_reloc, /* special_function */
902 "R_PPC_DTPREL16_HA", /* name */
903 FALSE, /* partial_inplace */
905 0xffff, /* dst_mask */
906 FALSE), /* pcrel_offset */
908 /* Computes a tp-relative displacement, the difference between the value of
909 sym+add and the value of the thread pointer (r13). */
910 HOWTO (R_PPC_TPREL32,
912 2, /* size (0 = byte, 1 = short, 2 = long) */
914 FALSE, /* pc_relative */
916 complain_overflow_dont, /* complain_on_overflow */
917 ppc_elf_unhandled_reloc, /* special_function */
918 "R_PPC_TPREL32", /* name */
919 FALSE, /* partial_inplace */
921 0xffffffff, /* dst_mask */
922 FALSE), /* pcrel_offset */
924 /* A 16 bit tprel reloc. */
925 HOWTO (R_PPC_TPREL16,
927 1, /* size (0 = byte, 1 = short, 2 = long) */
929 FALSE, /* pc_relative */
931 complain_overflow_signed, /* complain_on_overflow */
932 ppc_elf_unhandled_reloc, /* special_function */
933 "R_PPC_TPREL16", /* name */
934 FALSE, /* partial_inplace */
936 0xffff, /* dst_mask */
937 FALSE), /* pcrel_offset */
939 /* Like TPREL16, but no overflow. */
940 HOWTO (R_PPC_TPREL16_LO,
942 1, /* size (0 = byte, 1 = short, 2 = long) */
944 FALSE, /* pc_relative */
946 complain_overflow_dont, /* complain_on_overflow */
947 ppc_elf_unhandled_reloc, /* special_function */
948 "R_PPC_TPREL16_LO", /* name */
949 FALSE, /* partial_inplace */
951 0xffff, /* dst_mask */
952 FALSE), /* pcrel_offset */
954 /* Like TPREL16_LO, but next higher group of 16 bits. */
955 HOWTO (R_PPC_TPREL16_HI,
957 1, /* size (0 = byte, 1 = short, 2 = long) */
959 FALSE, /* pc_relative */
961 complain_overflow_dont, /* complain_on_overflow */
962 ppc_elf_unhandled_reloc, /* special_function */
963 "R_PPC_TPREL16_HI", /* name */
964 FALSE, /* partial_inplace */
966 0xffff, /* dst_mask */
967 FALSE), /* pcrel_offset */
969 /* Like TPREL16_HI, but adjust for low 16 bits. */
970 HOWTO (R_PPC_TPREL16_HA,
972 1, /* size (0 = byte, 1 = short, 2 = long) */
974 FALSE, /* pc_relative */
976 complain_overflow_dont, /* complain_on_overflow */
977 ppc_elf_unhandled_reloc, /* special_function */
978 "R_PPC_TPREL16_HA", /* name */
979 FALSE, /* partial_inplace */
981 0xffff, /* dst_mask */
982 FALSE), /* pcrel_offset */
984 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
985 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
986 to the first entry. */
987 HOWTO (R_PPC_GOT_TLSGD16,
989 1, /* size (0 = byte, 1 = short, 2 = long) */
991 FALSE, /* pc_relative */
993 complain_overflow_signed, /* complain_on_overflow */
994 ppc_elf_unhandled_reloc, /* special_function */
995 "R_PPC_GOT_TLSGD16", /* name */
996 FALSE, /* partial_inplace */
998 0xffff, /* dst_mask */
999 FALSE), /* pcrel_offset */
1001 /* Like GOT_TLSGD16, but no overflow. */
1002 HOWTO (R_PPC_GOT_TLSGD16_LO,
1004 1, /* size (0 = byte, 1 = short, 2 = long) */
1006 FALSE, /* pc_relative */
1008 complain_overflow_dont, /* complain_on_overflow */
1009 ppc_elf_unhandled_reloc, /* special_function */
1010 "R_PPC_GOT_TLSGD16_LO", /* name */
1011 FALSE, /* partial_inplace */
1013 0xffff, /* dst_mask */
1014 FALSE), /* pcrel_offset */
1016 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1017 HOWTO (R_PPC_GOT_TLSGD16_HI,
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 FALSE, /* pc_relative */
1023 complain_overflow_dont, /* complain_on_overflow */
1024 ppc_elf_unhandled_reloc, /* special_function */
1025 "R_PPC_GOT_TLSGD16_HI", /* name */
1026 FALSE, /* partial_inplace */
1028 0xffff, /* dst_mask */
1029 FALSE), /* pcrel_offset */
1031 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1032 HOWTO (R_PPC_GOT_TLSGD16_HA,
1033 16, /* rightshift */
1034 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 FALSE, /* pc_relative */
1038 complain_overflow_dont, /* complain_on_overflow */
1039 ppc_elf_unhandled_reloc, /* special_function */
1040 "R_PPC_GOT_TLSGD16_HA", /* name */
1041 FALSE, /* partial_inplace */
1043 0xffff, /* dst_mask */
1044 FALSE), /* pcrel_offset */
1046 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1047 with values (sym+add)@dtpmod and zero, and computes the offset to the
1049 HOWTO (R_PPC_GOT_TLSLD16,
1051 1, /* size (0 = byte, 1 = short, 2 = long) */
1053 FALSE, /* pc_relative */
1055 complain_overflow_signed, /* complain_on_overflow */
1056 ppc_elf_unhandled_reloc, /* special_function */
1057 "R_PPC_GOT_TLSLD16", /* name */
1058 FALSE, /* partial_inplace */
1060 0xffff, /* dst_mask */
1061 FALSE), /* pcrel_offset */
1063 /* Like GOT_TLSLD16, but no overflow. */
1064 HOWTO (R_PPC_GOT_TLSLD16_LO,
1066 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 FALSE, /* pc_relative */
1070 complain_overflow_dont, /* complain_on_overflow */
1071 ppc_elf_unhandled_reloc, /* special_function */
1072 "R_PPC_GOT_TLSLD16_LO", /* name */
1073 FALSE, /* partial_inplace */
1075 0xffff, /* dst_mask */
1076 FALSE), /* pcrel_offset */
1078 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1079 HOWTO (R_PPC_GOT_TLSLD16_HI,
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 FALSE, /* pc_relative */
1085 complain_overflow_dont, /* complain_on_overflow */
1086 ppc_elf_unhandled_reloc, /* special_function */
1087 "R_PPC_GOT_TLSLD16_HI", /* name */
1088 FALSE, /* partial_inplace */
1090 0xffff, /* dst_mask */
1091 FALSE), /* pcrel_offset */
1093 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1094 HOWTO (R_PPC_GOT_TLSLD16_HA,
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 FALSE, /* pc_relative */
1100 complain_overflow_dont, /* complain_on_overflow */
1101 ppc_elf_unhandled_reloc, /* special_function */
1102 "R_PPC_GOT_TLSLD16_HA", /* name */
1103 FALSE, /* partial_inplace */
1105 0xffff, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1108 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1109 the offset to the entry. */
1110 HOWTO (R_PPC_GOT_DTPREL16,
1112 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 FALSE, /* pc_relative */
1116 complain_overflow_signed, /* complain_on_overflow */
1117 ppc_elf_unhandled_reloc, /* special_function */
1118 "R_PPC_GOT_DTPREL16", /* name */
1119 FALSE, /* partial_inplace */
1121 0xffff, /* dst_mask */
1122 FALSE), /* pcrel_offset */
1124 /* Like GOT_DTPREL16, but no overflow. */
1125 HOWTO (R_PPC_GOT_DTPREL16_LO,
1127 1, /* size (0 = byte, 1 = short, 2 = long) */
1129 FALSE, /* pc_relative */
1131 complain_overflow_dont, /* complain_on_overflow */
1132 ppc_elf_unhandled_reloc, /* special_function */
1133 "R_PPC_GOT_DTPREL16_LO", /* name */
1134 FALSE, /* partial_inplace */
1136 0xffff, /* dst_mask */
1137 FALSE), /* pcrel_offset */
1139 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1140 HOWTO (R_PPC_GOT_DTPREL16_HI,
1141 16, /* rightshift */
1142 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 FALSE, /* pc_relative */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 ppc_elf_unhandled_reloc, /* special_function */
1148 "R_PPC_GOT_DTPREL16_HI", /* name */
1149 FALSE, /* partial_inplace */
1151 0xffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1154 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1155 HOWTO (R_PPC_GOT_DTPREL16_HA,
1156 16, /* rightshift */
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 FALSE, /* pc_relative */
1161 complain_overflow_dont, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc, /* special_function */
1163 "R_PPC_GOT_DTPREL16_HA", /* name */
1164 FALSE, /* partial_inplace */
1166 0xffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1169 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1170 offset to the entry. */
1171 HOWTO (R_PPC_GOT_TPREL16,
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 FALSE, /* pc_relative */
1177 complain_overflow_signed, /* complain_on_overflow */
1178 ppc_elf_unhandled_reloc, /* special_function */
1179 "R_PPC_GOT_TPREL16", /* name */
1180 FALSE, /* partial_inplace */
1182 0xffff, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1185 /* Like GOT_TPREL16, but no overflow. */
1186 HOWTO (R_PPC_GOT_TPREL16_LO,
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 FALSE, /* pc_relative */
1192 complain_overflow_dont, /* complain_on_overflow */
1193 ppc_elf_unhandled_reloc, /* special_function */
1194 "R_PPC_GOT_TPREL16_LO", /* name */
1195 FALSE, /* partial_inplace */
1197 0xffff, /* dst_mask */
1198 FALSE), /* pcrel_offset */
1200 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1201 HOWTO (R_PPC_GOT_TPREL16_HI,
1202 16, /* rightshift */
1203 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 FALSE, /* pc_relative */
1207 complain_overflow_dont, /* complain_on_overflow */
1208 ppc_elf_unhandled_reloc, /* special_function */
1209 "R_PPC_GOT_TPREL16_HI", /* name */
1210 FALSE, /* partial_inplace */
1212 0xffff, /* dst_mask */
1213 FALSE), /* pcrel_offset */
1215 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1216 HOWTO (R_PPC_GOT_TPREL16_HA,
1217 16, /* rightshift */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 FALSE, /* pc_relative */
1222 complain_overflow_dont, /* complain_on_overflow */
1223 ppc_elf_unhandled_reloc, /* special_function */
1224 "R_PPC_GOT_TPREL16_HA", /* name */
1225 FALSE, /* partial_inplace */
1227 0xffff, /* dst_mask */
1228 FALSE), /* pcrel_offset */
1230 /* The remaining relocs are from the Embedded ELF ABI, and are not
1231 in the SVR4 ELF ABI. */
1233 /* 32 bit value resulting from the addend minus the symbol. */
1234 HOWTO (R_PPC_EMB_NADDR32, /* type */
1236 2, /* size (0 = byte, 1 = short, 2 = long) */
1238 FALSE, /* pc_relative */
1240 complain_overflow_dont, /* complain_on_overflow */
1241 bfd_elf_generic_reloc, /* special_function */
1242 "R_PPC_EMB_NADDR32", /* name */
1243 FALSE, /* partial_inplace */
1245 0xffffffff, /* dst_mask */
1246 FALSE), /* pcrel_offset */
1248 /* 16 bit value resulting from the addend minus the symbol. */
1249 HOWTO (R_PPC_EMB_NADDR16, /* type */
1251 1, /* size (0 = byte, 1 = short, 2 = long) */
1253 FALSE, /* pc_relative */
1255 complain_overflow_signed, /* complain_on_overflow */
1256 bfd_elf_generic_reloc, /* special_function */
1257 "R_PPC_EMB_NADDR16", /* name */
1258 FALSE, /* partial_inplace */
1260 0xffff, /* dst_mask */
1261 FALSE), /* pcrel_offset */
1263 /* 16 bit value resulting from the addend minus the symbol. */
1264 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 FALSE, /* pc_relative */
1270 complain_overflow_dont,/* complain_on_overflow */
1271 bfd_elf_generic_reloc, /* special_function */
1272 "R_PPC_EMB_ADDR16_LO", /* name */
1273 FALSE, /* partial_inplace */
1275 0xffff, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1278 /* The high order 16 bits of the addend minus the symbol. */
1279 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1280 16, /* rightshift */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC_EMB_NADDR16_HI", /* name */
1288 FALSE, /* partial_inplace */
1290 0xffff, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1293 /* The high order 16 bits of the result of the addend minus the address,
1294 plus 1 if the contents of the low 16 bits, treated as a signed number,
1296 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1297 16, /* rightshift */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 FALSE, /* pc_relative */
1302 complain_overflow_dont, /* complain_on_overflow */
1303 ppc_elf_addr16_ha_reloc, /* special_function */
1304 "R_PPC_EMB_NADDR16_HA", /* name */
1305 FALSE, /* partial_inplace */
1307 0xffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1310 /* 16 bit value resulting from allocating a 4 byte word to hold an
1311 address in the .sdata section, and returning the offset from
1312 _SDA_BASE_ for that relocation. */
1313 HOWTO (R_PPC_EMB_SDAI16, /* type */
1315 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 FALSE, /* pc_relative */
1319 complain_overflow_signed, /* complain_on_overflow */
1320 bfd_elf_generic_reloc, /* special_function */
1321 "R_PPC_EMB_SDAI16", /* name */
1322 FALSE, /* partial_inplace */
1324 0xffff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1327 /* 16 bit value resulting from allocating a 4 byte word to hold an
1328 address in the .sdata2 section, and returning the offset from
1329 _SDA2_BASE_ for that relocation. */
1330 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 FALSE, /* pc_relative */
1336 complain_overflow_signed, /* complain_on_overflow */
1337 bfd_elf_generic_reloc, /* special_function */
1338 "R_PPC_EMB_SDA2I16", /* name */
1339 FALSE, /* partial_inplace */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1344 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1345 small data items. */
1346 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 FALSE, /* pc_relative */
1352 complain_overflow_signed, /* complain_on_overflow */
1353 bfd_elf_generic_reloc, /* special_function */
1354 "R_PPC_EMB_SDA2REL", /* name */
1355 FALSE, /* partial_inplace */
1357 0xffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1360 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1361 signed offset from the appropriate base, and filling in the register
1362 field with the appropriate register (0, 2, or 13). */
1363 HOWTO (R_PPC_EMB_SDA21, /* type */
1365 2, /* size (0 = byte, 1 = short, 2 = long) */
1367 FALSE, /* pc_relative */
1369 complain_overflow_signed, /* complain_on_overflow */
1370 bfd_elf_generic_reloc, /* special_function */
1371 "R_PPC_EMB_SDA21", /* name */
1372 FALSE, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1377 /* Relocation not handled: R_PPC_EMB_MRKREF */
1378 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1379 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1380 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1382 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1384 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1385 in the 16 bit signed offset from the appropriate base, and filling in the
1386 register field with the appropriate register (0, 2, or 13). */
1387 HOWTO (R_PPC_EMB_RELSDA, /* type */
1389 1, /* size (0 = byte, 1 = short, 2 = long) */
1391 FALSE, /* pc_relative */
1393 complain_overflow_signed, /* complain_on_overflow */
1394 bfd_elf_generic_reloc, /* special_function */
1395 "R_PPC_EMB_RELSDA", /* name */
1396 FALSE, /* partial_inplace */
1398 0xffff, /* dst_mask */
1399 FALSE), /* pcrel_offset */
1401 /* A relative 8 bit branch. */
1402 HOWTO (R_PPC_VLE_REL8, /* type */
1404 1, /* size (0 = byte, 1 = short, 2 = long) */
1406 TRUE, /* pc_relative */
1408 complain_overflow_signed, /* complain_on_overflow */
1409 bfd_elf_generic_reloc, /* special_function */
1410 "R_PPC_VLE_REL8", /* name */
1411 FALSE, /* partial_inplace */
1413 0xff, /* dst_mask */
1414 TRUE), /* pcrel_offset */
1416 /* A relative 15 bit branch. */
1417 HOWTO (R_PPC_VLE_REL15, /* type */
1419 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 TRUE, /* pc_relative */
1423 complain_overflow_signed, /* complain_on_overflow */
1424 bfd_elf_generic_reloc, /* special_function */
1425 "R_PPC_VLE_REL15", /* name */
1426 FALSE, /* partial_inplace */
1428 0xfe, /* dst_mask */
1429 TRUE), /* pcrel_offset */
1431 /* A relative 24 bit branch. */
1432 HOWTO (R_PPC_VLE_REL24, /* type */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 TRUE, /* pc_relative */
1438 complain_overflow_signed, /* complain_on_overflow */
1439 bfd_elf_generic_reloc, /* special_function */
1440 "R_PPC_VLE_REL24", /* name */
1441 FALSE, /* partial_inplace */
1443 0x1fffffe, /* dst_mask */
1444 TRUE), /* pcrel_offset */
1446 /* The 16 LSBS in split16a format. */
1447 HOWTO (R_PPC_VLE_LO16A, /* type */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 FALSE, /* pc_relative */
1453 complain_overflow_dont, /* complain_on_overflow */
1454 bfd_elf_generic_reloc, /* special_function */
1455 "R_PPC_VLE_LO16A", /* name */
1456 FALSE, /* partial_inplace */
1458 0x1f007ff, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1461 /* The 16 LSBS in split16d format. */
1462 HOWTO (R_PPC_VLE_LO16D, /* type */
1464 2, /* size (0 = byte, 1 = short, 2 = long) */
1466 FALSE, /* pc_relative */
1468 complain_overflow_dont, /* complain_on_overflow */
1469 bfd_elf_generic_reloc, /* special_function */
1470 "R_PPC_VLE_LO16D", /* name */
1471 FALSE, /* partial_inplace */
1473 0x1f07ff, /* dst_mask */
1474 FALSE), /* pcrel_offset */
1476 /* Bits 16-31 split16a format. */
1477 HOWTO (R_PPC_VLE_HI16A, /* type */
1478 16, /* rightshift */
1479 2, /* size (0 = byte, 1 = short, 2 = long) */
1481 FALSE, /* pc_relative */
1483 complain_overflow_dont, /* complain_on_overflow */
1484 bfd_elf_generic_reloc, /* special_function */
1485 "R_PPC_VLE_HI16A", /* name */
1486 FALSE, /* partial_inplace */
1488 0x1f007ff, /* dst_mask */
1489 FALSE), /* pcrel_offset */
1491 /* Bits 16-31 split16d format. */
1492 HOWTO (R_PPC_VLE_HI16D, /* type */
1493 16, /* rightshift */
1494 2, /* size (0 = byte, 1 = short, 2 = long) */
1496 FALSE, /* pc_relative */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 bfd_elf_generic_reloc, /* special_function */
1500 "R_PPC_VLE_HI16D", /* name */
1501 FALSE, /* partial_inplace */
1503 0x1f07ff, /* dst_mask */
1504 FALSE), /* pcrel_offset */
1506 /* Bits 16-31 (High Adjusted) in split16a format. */
1507 HOWTO (R_PPC_VLE_HA16A, /* type */
1508 16, /* rightshift */
1509 2, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE, /* pc_relative */
1513 complain_overflow_dont, /* complain_on_overflow */
1514 bfd_elf_generic_reloc, /* special_function */
1515 "R_PPC_VLE_HA16A", /* name */
1516 FALSE, /* partial_inplace */
1518 0x1f007ff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1521 /* Bits 16-31 (High Adjusted) in split16d format. */
1522 HOWTO (R_PPC_VLE_HA16D, /* type */
1523 16, /* rightshift */
1524 2, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE, /* pc_relative */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 bfd_elf_generic_reloc, /* special_function */
1530 "R_PPC_VLE_HA16D", /* name */
1531 FALSE, /* partial_inplace */
1533 0x1f07ff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1536 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1537 instructions. If the register base is 0 then the linker changes
1538 the e_add16i to an e_li instruction. */
1539 HOWTO (R_PPC_VLE_SDA21, /* type */
1541 2, /* size (0 = byte, 1 = short, 2 = long) */
1543 FALSE, /* pc_relative */
1545 complain_overflow_signed, /* complain_on_overflow */
1546 bfd_elf_generic_reloc, /* special_function */
1547 "R_PPC_VLE_SDA21", /* name */
1548 FALSE, /* partial_inplace */
1550 0xffff, /* dst_mask */
1551 FALSE), /* pcrel_offset */
1553 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1554 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1556 2, /* size (0 = byte, 1 = short, 2 = long) */
1558 FALSE, /* pc_relative */
1560 complain_overflow_dont, /* complain_on_overflow */
1561 bfd_elf_generic_reloc, /* special_function */
1562 "R_PPC_VLE_SDA21_LO", /* name */
1563 FALSE, /* partial_inplace */
1565 0xffff, /* dst_mask */
1566 FALSE), /* pcrel_offset */
1568 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1569 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1571 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 FALSE, /* pc_relative */
1575 complain_overflow_dont, /* complain_on_overflow */
1576 bfd_elf_generic_reloc, /* special_function */
1577 "R_PPC_VLE_SDAREL_LO16A", /* name */
1578 FALSE, /* partial_inplace */
1580 0x1f007ff, /* dst_mask */
1581 FALSE), /* pcrel_offset */
1583 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1584 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 FALSE, /* pc_relative */
1590 complain_overflow_dont, /* complain_on_overflow */
1591 bfd_elf_generic_reloc, /* special_function */
1592 "R_PPC_VLE_SDAREL_LO16D", /* name */
1593 FALSE, /* partial_inplace */
1595 0x1f07ff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1598 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1599 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1600 16, /* rightshift */
1601 2, /* size (0 = byte, 1 = short, 2 = long) */
1603 FALSE, /* pc_relative */
1605 complain_overflow_dont, /* complain_on_overflow */
1606 bfd_elf_generic_reloc, /* special_function */
1607 "R_PPC_VLE_SDAREL_HI16A", /* name */
1608 FALSE, /* partial_inplace */
1610 0x1f007ff, /* dst_mask */
1611 FALSE), /* pcrel_offset */
1613 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1614 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1615 16, /* rightshift */
1616 2, /* size (0 = byte, 1 = short, 2 = long) */
1618 FALSE, /* pc_relative */
1620 complain_overflow_dont, /* complain_on_overflow */
1621 bfd_elf_generic_reloc, /* special_function */
1622 "R_PPC_VLE_SDAREL_HI16D", /* name */
1623 FALSE, /* partial_inplace */
1625 0x1f07ff, /* dst_mask */
1626 FALSE), /* pcrel_offset */
1628 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1629 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1630 16, /* rightshift */
1631 2, /* size (0 = byte, 1 = short, 2 = long) */
1633 FALSE, /* pc_relative */
1635 complain_overflow_dont, /* complain_on_overflow */
1636 bfd_elf_generic_reloc, /* special_function */
1637 "R_PPC_VLE_SDAREL_HA16A", /* name */
1638 FALSE, /* partial_inplace */
1640 0x1f007ff, /* dst_mask */
1641 FALSE), /* pcrel_offset */
1643 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1644 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1645 16, /* rightshift */
1646 2, /* size (0 = byte, 1 = short, 2 = long) */
1648 FALSE, /* pc_relative */
1650 complain_overflow_dont, /* complain_on_overflow */
1651 bfd_elf_generic_reloc, /* special_function */
1652 "R_PPC_VLE_SDAREL_HA16D", /* name */
1653 FALSE, /* partial_inplace */
1655 0x1f07ff, /* dst_mask */
1656 FALSE), /* pcrel_offset */
1658 HOWTO (R_PPC_IRELATIVE, /* type */
1660 2, /* size (0 = byte, 1 = short, 2 = long) */
1662 FALSE, /* pc_relative */
1664 complain_overflow_dont, /* complain_on_overflow */
1665 bfd_elf_generic_reloc, /* special_function */
1666 "R_PPC_IRELATIVE", /* name */
1667 FALSE, /* partial_inplace */
1669 0xffffffff, /* dst_mask */
1670 FALSE), /* pcrel_offset */
1672 /* A 16 bit relative relocation. */
1673 HOWTO (R_PPC_REL16, /* type */
1675 1, /* size (0 = byte, 1 = short, 2 = long) */
1677 TRUE, /* pc_relative */
1679 complain_overflow_signed, /* complain_on_overflow */
1680 bfd_elf_generic_reloc, /* special_function */
1681 "R_PPC_REL16", /* name */
1682 FALSE, /* partial_inplace */
1684 0xffff, /* dst_mask */
1685 TRUE), /* pcrel_offset */
1687 /* A 16 bit relative relocation without overflow. */
1688 HOWTO (R_PPC_REL16_LO, /* type */
1690 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 TRUE, /* pc_relative */
1694 complain_overflow_dont,/* complain_on_overflow */
1695 bfd_elf_generic_reloc, /* special_function */
1696 "R_PPC_REL16_LO", /* name */
1697 FALSE, /* partial_inplace */
1699 0xffff, /* dst_mask */
1700 TRUE), /* pcrel_offset */
1702 /* The high order 16 bits of a relative address. */
1703 HOWTO (R_PPC_REL16_HI, /* type */
1704 16, /* rightshift */
1705 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 TRUE, /* pc_relative */
1709 complain_overflow_dont, /* complain_on_overflow */
1710 bfd_elf_generic_reloc, /* special_function */
1711 "R_PPC_REL16_HI", /* name */
1712 FALSE, /* partial_inplace */
1714 0xffff, /* dst_mask */
1715 TRUE), /* pcrel_offset */
1717 /* The high order 16 bits of a relative address, plus 1 if the contents of
1718 the low 16 bits, treated as a signed number, is negative. */
1719 HOWTO (R_PPC_REL16_HA, /* type */
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 TRUE, /* pc_relative */
1725 complain_overflow_dont, /* complain_on_overflow */
1726 ppc_elf_addr16_ha_reloc, /* special_function */
1727 "R_PPC_REL16_HA", /* name */
1728 FALSE, /* partial_inplace */
1730 0xffff, /* dst_mask */
1731 TRUE), /* pcrel_offset */
1733 /* GNU extension to record C++ vtable hierarchy. */
1734 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1736 0, /* size (0 = byte, 1 = short, 2 = long) */
1738 FALSE, /* pc_relative */
1740 complain_overflow_dont, /* complain_on_overflow */
1741 NULL, /* special_function */
1742 "R_PPC_GNU_VTINHERIT", /* name */
1743 FALSE, /* partial_inplace */
1746 FALSE), /* pcrel_offset */
1748 /* GNU extension to record C++ vtable member usage. */
1749 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1751 0, /* size (0 = byte, 1 = short, 2 = long) */
1753 FALSE, /* pc_relative */
1755 complain_overflow_dont, /* complain_on_overflow */
1756 NULL, /* special_function */
1757 "R_PPC_GNU_VTENTRY", /* name */
1758 FALSE, /* partial_inplace */
1761 FALSE), /* pcrel_offset */
1763 /* Phony reloc to handle AIX style TOC entries. */
1764 HOWTO (R_PPC_TOC16, /* type */
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE, /* pc_relative */
1770 complain_overflow_signed, /* complain_on_overflow */
1771 bfd_elf_generic_reloc, /* special_function */
1772 "R_PPC_TOC16", /* name */
1773 FALSE, /* partial_inplace */
1775 0xffff, /* dst_mask */
1776 FALSE), /* pcrel_offset */
1779 /* External 32-bit PPC structure for PRPSINFO. This structure is
1780 ABI-defined, thus we choose to use char arrays here in order to
1781 avoid dealing with different types in different architectures.
1783 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1784 most non-PPC architectures use `short int'.
1786 This structure will ultimately be written in the corefile's note
1787 section, as the PRPSINFO. */
1789 struct elf_external_ppc_linux_prpsinfo32
1791 char pr_state; /* Numeric process state. */
1792 char pr_sname; /* Char for pr_state. */
1793 char pr_zomb; /* Zombie. */
1794 char pr_nice; /* Nice val. */
1795 char pr_flag[4]; /* Flags. */
1802 char pr_fname[16]; /* Filename of executable. */
1803 char pr_psargs[80]; /* Initial part of arg list. */
1806 /* Helper macro to swap (properly handling endianess) things from the
1807 `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32'
1810 Note that FROM should be a pointer, and TO should be the explicit type. */
1812 #define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \
1815 H_PUT_8 (abfd, from->pr_state, &to.pr_state); \
1816 H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \
1817 H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \
1818 H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \
1819 H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \
1820 H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \
1821 H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \
1822 H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \
1823 H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \
1824 H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \
1825 H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \
1826 strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \
1827 strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \
1831 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1834 ppc_elf_howto_init (void)
1836 unsigned int i, type;
1839 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1842 type = ppc_elf_howto_raw[i].type;
1843 if (type >= (sizeof (ppc_elf_howto_table)
1844 / sizeof (ppc_elf_howto_table[0])))
1846 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1850 static reloc_howto_type *
1851 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1852 bfd_reloc_code_real_type code)
1854 enum elf_ppc_reloc_type r;
1856 /* Initialize howto table if not already done. */
1857 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1858 ppc_elf_howto_init ();
1865 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1866 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1867 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1868 case BFD_RELOC_PPC64_ADDR16_DS:
1869 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1870 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1871 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1872 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1873 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1874 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1875 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1876 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1877 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1878 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1879 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1880 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1881 case BFD_RELOC_PPC64_GOT16_DS:
1882 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1883 case BFD_RELOC_PPC64_GOT16_LO_DS:
1884 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1885 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1886 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1887 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1888 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1889 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1890 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1891 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1892 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1893 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1894 case BFD_RELOC_PPC64_PLT16_LO_DS:
1895 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1896 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1897 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1898 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1899 case BFD_RELOC_PPC64_SECTOFF_DS:
1900 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1901 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1902 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1903 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1904 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1905 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1906 case BFD_RELOC_PPC64_TOC16_DS:
1907 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1908 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1909 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1910 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1911 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1912 case BFD_RELOC_PPC64_TPREL16_DS:
1913 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1914 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1915 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1916 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1917 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1918 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1919 case BFD_RELOC_PPC64_DTPREL16_DS:
1920 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1921 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1922 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1923 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1924 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1925 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1926 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1929 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1930 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1933 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1934 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1937 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1938 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1941 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1942 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1943 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1946 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1947 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1948 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1949 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1950 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1951 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1952 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1953 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1954 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1955 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1956 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1957 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1958 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1959 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1960 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1961 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1962 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1963 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1964 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1965 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1966 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1967 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1968 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1969 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1970 r = R_PPC_VLE_SDAREL_LO16A;
1972 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1973 r = R_PPC_VLE_SDAREL_LO16D;
1975 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1976 r = R_PPC_VLE_SDAREL_HI16A;
1978 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1979 r = R_PPC_VLE_SDAREL_HI16D;
1981 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1982 r = R_PPC_VLE_SDAREL_HA16A;
1984 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1985 r = R_PPC_VLE_SDAREL_HA16D;
1987 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1988 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1989 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1990 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1991 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1992 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1995 return ppc_elf_howto_table[r];
1998 static reloc_howto_type *
1999 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2005 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2007 if (ppc_elf_howto_raw[i].name != NULL
2008 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2009 return &ppc_elf_howto_raw[i];
2014 /* Set the howto pointer for a PowerPC ELF reloc. */
2017 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2019 Elf_Internal_Rela *dst)
2021 /* Initialize howto table if not already done. */
2022 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2023 ppc_elf_howto_init ();
2025 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
2026 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
2028 /* Just because the above assert didn't trigger doesn't mean that
2029 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2030 if (!cache_ptr->howto)
2032 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2033 abfd, ELF32_R_TYPE (dst->r_info));
2034 bfd_set_error (bfd_error_bad_value);
2036 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2040 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2042 static bfd_reloc_status_type
2043 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2044 arelent *reloc_entry,
2046 void *data ATTRIBUTE_UNUSED,
2047 asection *input_section,
2049 char **error_message ATTRIBUTE_UNUSED)
2053 if (output_bfd != NULL)
2055 reloc_entry->address += input_section->output_offset;
2056 return bfd_reloc_ok;
2059 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2060 return bfd_reloc_outofrange;
2062 if (bfd_is_com_section (symbol->section))
2065 relocation = symbol->value;
2067 relocation += symbol->section->output_section->vma;
2068 relocation += symbol->section->output_offset;
2069 relocation += reloc_entry->addend;
2070 if (reloc_entry->howto->pc_relative)
2071 relocation -= reloc_entry->address;
2073 reloc_entry->addend += (relocation & 0x8000) << 1;
2075 return bfd_reloc_continue;
2078 static bfd_reloc_status_type
2079 ppc_elf_unhandled_reloc (bfd *abfd,
2080 arelent *reloc_entry,
2083 asection *input_section,
2085 char **error_message)
2087 /* If this is a relocatable link (output_bfd test tells us), just
2088 call the generic function. Any adjustment will be done at final
2090 if (output_bfd != NULL)
2091 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2092 input_section, output_bfd, error_message);
2094 if (error_message != NULL)
2096 static char buf[60];
2097 sprintf (buf, _("generic linker can't handle %s"),
2098 reloc_entry->howto->name);
2099 *error_message = buf;
2101 return bfd_reloc_dangerous;
2104 /* Sections created by the linker. */
2106 typedef struct elf_linker_section
2108 /* Pointer to the bfd section. */
2112 /* Associated bss section name. */
2113 const char *bss_name;
2114 /* Associated symbol name. */
2115 const char *sym_name;
2116 /* Associated symbol. */
2117 struct elf_link_hash_entry *sym;
2118 } elf_linker_section_t;
2120 /* Linked list of allocated pointer entries. This hangs off of the
2121 symbol lists, and provides allows us to return different pointers,
2122 based on different addend's. */
2124 typedef struct elf_linker_section_pointers
2126 /* next allocated pointer for this symbol */
2127 struct elf_linker_section_pointers *next;
2128 /* offset of pointer from beginning of section */
2132 /* which linker section this is */
2133 elf_linker_section_t *lsect;
2134 } elf_linker_section_pointers_t;
2136 struct ppc_elf_obj_tdata
2138 struct elf_obj_tdata elf;
2140 /* A mapping from local symbols to offsets into the various linker
2141 sections added. This is index by the symbol index. */
2142 elf_linker_section_pointers_t **linker_section_pointers;
2144 /* Flags used to auto-detect plt type. */
2145 unsigned int makes_plt_call : 1;
2146 unsigned int has_rel16 : 1;
2149 #define ppc_elf_tdata(bfd) \
2150 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2152 #define elf_local_ptr_offsets(bfd) \
2153 (ppc_elf_tdata (bfd)->linker_section_pointers)
2155 #define is_ppc_elf(bfd) \
2156 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2157 && elf_object_id (bfd) == PPC32_ELF_DATA)
2159 /* Override the generic function because we store some extras. */
2162 ppc_elf_mkobject (bfd *abfd)
2164 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2168 /* Fix bad default arch selected for a 32 bit input bfd when the
2169 default is 64 bit. */
2172 ppc_elf_object_p (bfd *abfd)
2174 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2176 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2178 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2180 /* Relies on arch after 64 bit default being 32 bit default. */
2181 abfd->arch_info = abfd->arch_info->next;
2182 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2188 /* Function to set whether a module needs the -mrelocatable bit set. */
2191 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2193 BFD_ASSERT (!elf_flags_init (abfd)
2194 || elf_elfheader (abfd)->e_flags == flags);
2196 elf_elfheader (abfd)->e_flags = flags;
2197 elf_flags_init (abfd) = TRUE;
2201 /* Support for core dump NOTE sections. */
2204 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2209 switch (note->descsz)
2214 case 268: /* Linux/PPC. */
2216 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2219 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2228 /* Make a ".reg/999" section. */
2229 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2230 size, note->descpos + offset);
2234 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2236 switch (note->descsz)
2241 case 128: /* Linux/PPC elf_prpsinfo. */
2242 elf_tdata (abfd)->core->pid
2243 = bfd_get_32 (abfd, note->descdata + 16);
2244 elf_tdata (abfd)->core->program
2245 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2246 elf_tdata (abfd)->core->command
2247 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2250 /* Note that for some reason, a spurious space is tacked
2251 onto the end of the args in some (at least one anyway)
2252 implementations, so strip it off if it exists. */
2255 char *command = elf_tdata (abfd)->core->command;
2256 int n = strlen (command);
2258 if (0 < n && command[n - 1] == ' ')
2259 command[n - 1] = '\0';
2266 elfcore_write_ppc_linux_prpsinfo32 (bfd *abfd, char *buf, int *bufsiz,
2267 const struct elf_internal_linux_prpsinfo *prpsinfo)
2269 struct elf_external_ppc_linux_prpsinfo32 data;
2271 memset (&data, 0, sizeof (data));
2272 PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd, prpsinfo, data);
2274 return elfcore_write_note (abfd, buf, bufsiz,
2275 "CORE", NT_PRPSINFO, &data, sizeof (data));
2279 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2291 va_start (ap, note_type);
2292 memset (data, 0, sizeof (data));
2293 strncpy (data + 32, va_arg (ap, const char *), 16);
2294 strncpy (data + 48, va_arg (ap, const char *), 80);
2296 return elfcore_write_note (abfd, buf, bufsiz,
2297 "CORE", note_type, data, sizeof (data));
2308 va_start (ap, note_type);
2309 memset (data, 0, 72);
2310 pid = va_arg (ap, long);
2311 bfd_put_32 (abfd, pid, data + 24);
2312 cursig = va_arg (ap, int);
2313 bfd_put_16 (abfd, cursig, data + 12);
2314 greg = va_arg (ap, const void *);
2315 memcpy (data + 72, greg, 192);
2316 memset (data + 264, 0, 4);
2318 return elfcore_write_note (abfd, buf, bufsiz,
2319 "CORE", note_type, data, sizeof (data));
2325 ppc_elf_lookup_section_flags (char *flag_name)
2328 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2334 /* Add the VLE flag if required. */
2337 ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2339 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2340 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2341 shdr->sh_flags |= SHF_PPC_VLE;
2346 /* Return address for Ith PLT stub in section PLT, for relocation REL
2347 or (bfd_vma) -1 if it should not be included. */
2350 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2351 const asection *plt ATTRIBUTE_UNUSED,
2354 return rel->address;
2357 /* Handle a PowerPC specific section when reading an object file. This
2358 is called when bfd_section_from_shdr finds a section with an unknown
2362 ppc_elf_section_from_shdr (bfd *abfd,
2363 Elf_Internal_Shdr *hdr,
2370 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2373 newsect = hdr->bfd_section;
2374 flags = bfd_get_section_flags (abfd, newsect);
2375 if (hdr->sh_flags & SHF_EXCLUDE)
2376 flags |= SEC_EXCLUDE;
2378 if (hdr->sh_type == SHT_ORDERED)
2379 flags |= SEC_SORT_ENTRIES;
2381 bfd_set_section_flags (abfd, newsect, flags);
2385 /* Set up any other section flags and such that may be necessary. */
2388 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2389 Elf_Internal_Shdr *shdr,
2392 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2393 shdr->sh_type = SHT_ORDERED;
2398 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2399 need to bump up the number of section headers. */
2402 ppc_elf_additional_program_headers (bfd *abfd,
2403 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2408 s = bfd_get_section_by_name (abfd, ".sbss2");
2409 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2412 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2413 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2419 /* Modify the segment map for VLE executables. */
2422 ppc_elf_modify_segment_map (bfd *abfd,
2423 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2425 struct elf_segment_map *m, *n;
2428 bfd_boolean sect0_vle, sectj_vle;
2430 /* At this point in the link, output sections have already been sorted by
2431 LMA and assigned to segments. All that is left to do is to ensure
2432 there is no mixing of VLE & non-VLE sections in a text segment.
2433 If we find that case, we split the segment.
2434 We maintain the original output section order. */
2436 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2441 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
2442 for (j = 1; j < m->count; ++j)
2444 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2446 if (sectj_vle != sect0_vle)
2452 /* sections 0..j-1 stay in this (current) segment,
2453 the remainder are put in a new segment.
2454 The scan resumes with the new segment. */
2456 /* Fix the new segment. */
2457 amt = sizeof (struct elf_segment_map);
2458 amt += (m->count - j - 1) * sizeof (asection *);
2459 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2463 n->p_type = PT_LOAD;
2464 n->p_flags = PF_X | PF_R;
2466 n->p_flags |= PF_PPC_VLE;
2467 n->count = m->count - j;
2468 for (k = 0; k < n->count; ++k)
2470 n->sections[k] = m->sections[j+k];
2471 m->sections[j+k] = NULL;
2476 /* Fix the current segment */
2483 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2484 .PPC.EMB.sbss0 a normal section, and not a bss section so
2485 that the linker doesn't crater when trying to make more than
2488 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2490 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2491 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2492 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2493 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2494 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2495 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2496 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2497 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2498 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2499 { NULL, 0, 0, 0, 0 }
2502 /* This is what we want for new plt/got. */
2503 static struct bfd_elf_special_section ppc_alt_plt =
2504 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2506 static const struct bfd_elf_special_section *
2507 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2509 const struct bfd_elf_special_section *ssect;
2511 /* See if this is one of the special sections. */
2512 if (sec->name == NULL)
2515 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2519 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2520 ssect = &ppc_alt_plt;
2524 return _bfd_elf_get_sec_type_attr (abfd, sec);
2527 /* Very simple linked list structure for recording apuinfo values. */
2528 typedef struct apuinfo_list
2530 struct apuinfo_list *next;
2531 unsigned long value;
2535 static apuinfo_list *head;
2536 static bfd_boolean apuinfo_set;
2539 apuinfo_list_init (void)
2542 apuinfo_set = FALSE;
2546 apuinfo_list_add (unsigned long value)
2548 apuinfo_list *entry = head;
2550 while (entry != NULL)
2552 if (entry->value == value)
2554 entry = entry->next;
2557 entry = bfd_malloc (sizeof (* entry));
2561 entry->value = value;
2567 apuinfo_list_length (void)
2569 apuinfo_list *entry;
2570 unsigned long count;
2572 for (entry = head, count = 0;
2574 entry = entry->next)
2580 static inline unsigned long
2581 apuinfo_list_element (unsigned long number)
2583 apuinfo_list * entry;
2587 entry = entry->next)
2590 return entry ? entry->value : 0;
2594 apuinfo_list_finish (void)
2596 apuinfo_list *entry;
2598 for (entry = head; entry;)
2600 apuinfo_list *next = entry->next;
2608 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2609 #define APUINFO_LABEL "APUinfo"
2611 /* Scan the input BFDs and create a linked list of
2612 the APUinfo values that will need to be emitted. */
2615 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2619 char *buffer = NULL;
2620 bfd_size_type largest_input_size = 0;
2622 unsigned long length;
2623 const char *error_message = NULL;
2625 if (link_info == NULL)
2628 apuinfo_list_init ();
2630 /* Read in the input sections contents. */
2631 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2633 unsigned long datum;
2635 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2639 error_message = _("corrupt %s section in %B");
2640 length = asec->size;
2645 if (largest_input_size < asec->size)
2649 largest_input_size = asec->size;
2650 buffer = bfd_malloc (largest_input_size);
2655 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2656 || (bfd_bread (buffer, length, ibfd) != length))
2658 error_message = _("unable to read in %s section from %B");
2662 /* Verify the contents of the header. Note - we have to
2663 extract the values this way in order to allow for a
2664 host whose endian-ness is different from the target. */
2665 datum = bfd_get_32 (ibfd, buffer);
2666 if (datum != sizeof APUINFO_LABEL)
2669 datum = bfd_get_32 (ibfd, buffer + 8);
2673 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2676 /* Get the number of bytes used for apuinfo entries. */
2677 datum = bfd_get_32 (ibfd, buffer + 4);
2678 if (datum + 20 != length)
2681 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2682 for (i = 0; i < datum; i += 4)
2683 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2686 error_message = NULL;
2690 /* Compute the size of the output section. */
2691 unsigned num_entries = apuinfo_list_length ();
2693 /* Set the output section size, if it exists. */
2694 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2696 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2699 error_message = _("warning: unable to set size of %s section in %B");
2708 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2711 /* Prevent the output section from accumulating the input sections'
2712 contents. We have already stored this in our linked list structure. */
2715 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2716 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2718 bfd_byte *contents ATTRIBUTE_UNUSED)
2720 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2723 /* Finally we can generate the output section. */
2726 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2731 unsigned num_entries;
2732 bfd_size_type length;
2734 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2741 length = asec->size;
2745 buffer = bfd_malloc (length);
2748 (*_bfd_error_handler)
2749 (_("failed to allocate space for new APUinfo section."));
2753 /* Create the apuinfo header. */
2754 num_entries = apuinfo_list_length ();
2755 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2756 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2757 bfd_put_32 (abfd, 0x2, buffer + 8);
2758 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2761 for (i = 0; i < num_entries; i++)
2763 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2767 if (length != asec->size)
2768 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2770 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2771 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2775 apuinfo_list_finish ();
2779 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2781 bfd_byte buf[GLINK_ENTRY_SIZE];
2783 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2786 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2787 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2788 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2789 && bfd_get_32 (abfd, buf + 12) == BCTR);
2793 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2795 bfd_vma vma = *(bfd_vma *) ptr;
2796 return ((section->flags & SEC_ALLOC) != 0
2797 && section->vma <= vma
2798 && vma < section->vma + section->size);
2802 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2803 long dynsymcount, asymbol **dynsyms,
2806 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2807 asection *plt, *relplt, *dynamic, *glink;
2808 bfd_vma glink_vma = 0;
2809 bfd_vma resolv_vma = 0;
2820 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2823 if (dynsymcount <= 0)
2826 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2830 plt = bfd_get_section_by_name (abfd, ".plt");
2834 /* Call common code to handle old-style executable PLTs. */
2835 if (elf_section_flags (plt) & SHF_EXECINSTR)
2836 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2837 dynsymcount, dynsyms, ret);
2839 /* If this object was prelinked, the prelinker stored the address
2840 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2841 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2842 if (dynamic != NULL)
2844 bfd_byte *dynbuf, *extdyn, *extdynend;
2846 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2848 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2851 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2852 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2855 extdynend = extdyn + dynamic->size;
2856 for (; extdyn < extdynend; extdyn += extdynsize)
2858 Elf_Internal_Dyn dyn;
2859 (*swap_dyn_in) (abfd, extdyn, &dyn);
2861 if (dyn.d_tag == DT_NULL)
2864 if (dyn.d_tag == DT_PPC_GOT)
2866 unsigned int g_o_t = dyn.d_un.d_val;
2867 asection *got = bfd_get_section_by_name (abfd, ".got");
2869 && bfd_get_section_contents (abfd, got, buf,
2870 g_o_t - got->vma + 4, 4))
2871 glink_vma = bfd_get_32 (abfd, buf);
2878 /* Otherwise we read the first plt entry. */
2881 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2882 glink_vma = bfd_get_32 (abfd, buf);
2888 /* The .glink section usually does not survive the final
2889 link; search for the section (usually .text) where the
2890 glink stubs now reside. */
2891 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2895 /* Determine glink PLT resolver by reading the relative branch
2896 from the first glink stub. */
2897 if (bfd_get_section_contents (abfd, glink, buf,
2898 glink_vma - glink->vma, 4))
2900 unsigned int insn = bfd_get_32 (abfd, buf);
2902 /* The first glink stub may either branch to the resolver ... */
2904 if ((insn & ~0x3fffffc) == 0)
2905 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2907 /* ... or fall through a bunch of NOPs. */
2908 else if ((insn ^ B ^ NOP) == 0)
2910 bfd_get_section_contents (abfd, glink, buf,
2911 glink_vma - glink->vma + i, 4);
2913 if (bfd_get_32 (abfd, buf) != NOP)
2915 resolv_vma = glink_vma + i;
2920 count = relplt->size / sizeof (Elf32_External_Rela);
2921 stub_vma = glink_vma - (bfd_vma) count * 16;
2922 /* If the stubs are those for -shared/-pie then we might have
2923 multiple stubs for each plt entry. If that is the case then
2924 there is no way to associate stubs with their plt entries short
2925 of figuring out the GOT pointer value used in the stub. */
2926 if (!is_nonpic_glink_stub (abfd, glink,
2927 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2930 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2931 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2934 size = count * sizeof (asymbol);
2935 p = relplt->relocation;
2936 for (i = 0; i < count; i++, p++)
2938 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2940 size += sizeof ("+0x") - 1 + 8;
2943 size += sizeof (asymbol) + sizeof ("__glink");
2946 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2948 s = *ret = bfd_malloc (size);
2952 names = (char *) (s + count + 1 + (resolv_vma != 0));
2953 p = relplt->relocation;
2954 for (i = 0; i < count; i++, p++)
2958 *s = **p->sym_ptr_ptr;
2959 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2960 we are defining a symbol, ensure one of them is set. */
2961 if ((s->flags & BSF_LOCAL) == 0)
2962 s->flags |= BSF_GLOBAL;
2963 s->flags |= BSF_SYNTHETIC;
2965 s->value = stub_vma - glink->vma;
2968 len = strlen ((*p->sym_ptr_ptr)->name);
2969 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2973 memcpy (names, "+0x", sizeof ("+0x") - 1);
2974 names += sizeof ("+0x") - 1;
2975 bfd_sprintf_vma (abfd, names, p->addend);
2976 names += strlen (names);
2978 memcpy (names, "@plt", sizeof ("@plt"));
2979 names += sizeof ("@plt");
2984 /* Add a symbol at the start of the glink branch table. */
2985 memset (s, 0, sizeof *s);
2987 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2989 s->value = glink_vma - glink->vma;
2991 memcpy (names, "__glink", sizeof ("__glink"));
2992 names += sizeof ("__glink");
2998 /* Add a symbol for the glink PLT resolver. */
2999 memset (s, 0, sizeof *s);
3001 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3003 s->value = resolv_vma - glink->vma;
3005 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3006 names += sizeof ("__glink_PLTresolve");
3014 /* The following functions are specific to the ELF linker, while
3015 functions above are used generally. They appear in this file more
3016 or less in the order in which they are called. eg.
3017 ppc_elf_check_relocs is called early in the link process,
3018 ppc_elf_finish_dynamic_sections is one of the last functions
3021 /* Track PLT entries needed for a given symbol. We might need more
3022 than one glink entry per symbol when generating a pic binary. */
3025 struct plt_entry *next;
3027 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3028 This field stores the offset into .got2 used to initialise the
3029 GOT pointer reg. It will always be at least 32768. (Current
3030 gcc always uses an offset of 32768, but ld -r will pack .got2
3031 sections together resulting in larger offsets). */
3034 /* The .got2 section. */
3037 /* PLT refcount or offset. */
3040 bfd_signed_vma refcount;
3044 /* .glink stub offset. */
3045 bfd_vma glink_offset;
3048 /* Of those relocs that might be copied as dynamic relocs, this function
3049 selects those that must be copied when linking a shared library,
3050 even when the symbol is local. */
3053 must_be_dyn_reloc (struct bfd_link_info *info,
3054 enum elf_ppc_reloc_type r_type)
3063 case R_PPC_REL14_BRTAKEN:
3064 case R_PPC_REL14_BRNTAKEN:
3070 case R_PPC_TPREL16_LO:
3071 case R_PPC_TPREL16_HI:
3072 case R_PPC_TPREL16_HA:
3073 return !info->executable;
3077 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3078 copying dynamic variables from a shared lib into an app's dynbss
3079 section, and instead use a dynamic relocation to point into the
3081 #define ELIMINATE_COPY_RELOCS 1
3083 /* Used to track dynamic relocations for local symbols. */
3084 struct ppc_dyn_relocs
3086 struct ppc_dyn_relocs *next;
3088 /* The input section of the reloc. */
3091 /* Total number of relocs copied for the input section. */
3092 unsigned int count : 31;
3094 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3095 unsigned int ifunc : 1;
3098 /* PPC ELF linker hash entry. */
3100 struct ppc_elf_link_hash_entry
3102 struct elf_link_hash_entry elf;
3104 /* If this symbol is used in the linker created sections, the processor
3105 specific backend uses this field to map the field into the offset
3106 from the beginning of the section. */
3107 elf_linker_section_pointers_t *linker_section_pointer;
3109 /* Track dynamic relocs copied for this symbol. */
3110 struct elf_dyn_relocs *dyn_relocs;
3112 /* Contexts in which symbol is used in the GOT (or TOC).
3113 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3114 corresponding relocs are encountered during check_relocs.
3115 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3116 indicate the corresponding GOT entry type is not needed. */
3117 #define TLS_GD 1 /* GD reloc. */
3118 #define TLS_LD 2 /* LD reloc. */
3119 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3120 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3121 #define TLS_TLS 16 /* Any TLS reloc. */
3122 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3123 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3126 /* Nonzero if we have seen a small data relocation referring to this
3128 unsigned char has_sda_refs;
3131 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3133 /* PPC ELF linker hash table. */
3135 struct ppc_elf_link_hash_table
3137 struct elf_link_hash_table elf;
3139 /* Various options passed from the linker. */
3140 struct ppc_elf_params *params;
3142 /* Short-cuts to get to dynamic linker sections. */
3154 elf_linker_section_t sdata[2];
3156 asection *glink_eh_frame;
3158 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3161 /* The .got.plt section (VxWorks only)*/
3164 /* Shortcut to __tls_get_addr. */
3165 struct elf_link_hash_entry *tls_get_addr;
3167 /* The bfd that forced an old-style PLT. */
3170 /* TLS local dynamic got entry handling. */
3172 bfd_signed_vma refcount;
3176 /* Offset of branch table to PltResolve function in glink. */
3177 bfd_vma glink_pltresolve;
3179 /* Size of reserved GOT entries. */
3180 unsigned int got_header_size;
3181 /* Non-zero if allocating the header left a gap. */
3182 unsigned int got_gap;
3184 /* The type of PLT we have chosen to use. */
3185 enum ppc_elf_plt_type plt_type;
3187 /* True if the target system is VxWorks. */
3188 unsigned int is_vxworks:1;
3190 /* The size of PLT entries. */
3192 /* The distance between adjacent PLT slots. */
3194 /* The size of the first PLT entry. */
3195 int plt_initial_entry_size;
3197 /* Small local sym cache. */
3198 struct sym_cache sym_cache;
3201 /* Rename some of the generic section flags to better document how they
3202 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3204 /* Nonzero if this section has TLS related relocations. */
3205 #define has_tls_reloc sec_flg0
3207 /* Nonzero if this section has a call to __tls_get_addr. */
3208 #define has_tls_get_addr_call sec_flg1
3210 /* Get the PPC ELF linker hash table from a link_info structure. */
3212 #define ppc_elf_hash_table(p) \
3213 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3214 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3216 /* Create an entry in a PPC ELF linker hash table. */
3218 static struct bfd_hash_entry *
3219 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3220 struct bfd_hash_table *table,
3223 /* Allocate the structure if it has not already been allocated by a
3227 entry = bfd_hash_allocate (table,
3228 sizeof (struct ppc_elf_link_hash_entry));
3233 /* Call the allocation method of the superclass. */
3234 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3237 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3238 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3239 ppc_elf_hash_entry (entry)->tls_mask = 0;
3240 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3246 /* Create a PPC ELF linker hash table. */
3248 static struct bfd_link_hash_table *
3249 ppc_elf_link_hash_table_create (bfd *abfd)
3251 struct ppc_elf_link_hash_table *ret;
3252 static struct ppc_elf_params default_params = { PLT_OLD, 0, 1, 0, 0, 4096 };
3254 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3258 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3259 ppc_elf_link_hash_newfunc,
3260 sizeof (struct ppc_elf_link_hash_entry),
3267 ret->elf.init_plt_refcount.refcount = 0;
3268 ret->elf.init_plt_refcount.glist = NULL;
3269 ret->elf.init_plt_offset.offset = 0;
3270 ret->elf.init_plt_offset.glist = NULL;
3272 ret->params = &default_params;
3274 ret->sdata[0].name = ".sdata";
3275 ret->sdata[0].sym_name = "_SDA_BASE_";
3276 ret->sdata[0].bss_name = ".sbss";
3278 ret->sdata[1].name = ".sdata2";
3279 ret->sdata[1].sym_name = "_SDA2_BASE_";
3280 ret->sdata[1].bss_name = ".sbss2";
3282 ret->plt_entry_size = 12;
3283 ret->plt_slot_size = 8;
3284 ret->plt_initial_entry_size = 72;
3286 return &ret->elf.root;
3289 /* Hook linker params into hash table. */
3292 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3294 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3297 htab->params = params;
3300 /* Create .got and the related sections. */
3303 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3305 struct ppc_elf_link_hash_table *htab;
3309 if (!_bfd_elf_create_got_section (abfd, info))
3312 htab = ppc_elf_hash_table (info);
3313 htab->got = s = bfd_get_linker_section (abfd, ".got");
3317 if (htab->is_vxworks)
3319 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3325 /* The powerpc .got has a blrl instruction in it. Mark it
3327 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3328 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3329 if (!bfd_set_section_flags (abfd, s, flags))
3333 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3341 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3343 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3347 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3348 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3349 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3352 || !bfd_set_section_alignment (abfd, s,
3353 htab->params->ppc476_workaround ? 6 : 4))
3356 if (!info->no_ld_generated_unwind_info)
3358 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3359 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3360 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3361 htab->glink_eh_frame = s;
3363 || !bfd_set_section_alignment (abfd, s, 2))
3367 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3368 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3371 || !bfd_set_section_alignment (abfd, s, 4))
3374 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3375 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3376 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3379 || ! bfd_set_section_alignment (abfd, s, 2))
3384 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3385 to output sections (just like _bfd_elf_create_dynamic_sections has
3386 to create .dynbss and .rela.bss). */
3389 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3391 struct ppc_elf_link_hash_table *htab;
3395 htab = ppc_elf_hash_table (info);
3397 if (htab->got == NULL
3398 && !ppc_elf_create_got (abfd, info))
3401 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3404 if (htab->glink == NULL
3405 && !ppc_elf_create_glink (abfd, info))
3408 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3409 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3410 SEC_ALLOC | SEC_LINKER_CREATED);
3417 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3418 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3419 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3420 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3423 || ! bfd_set_section_alignment (abfd, s, 2))
3427 if (htab->is_vxworks
3428 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3431 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3432 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3436 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3437 if (htab->plt_type == PLT_VXWORKS)
3438 /* The VxWorks PLT is a loaded section with contents. */
3439 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3440 return bfd_set_section_flags (abfd, s, flags);
3443 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3446 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3447 struct elf_link_hash_entry *dir,
3448 struct elf_link_hash_entry *ind)
3450 struct ppc_elf_link_hash_entry *edir, *eind;
3452 edir = (struct ppc_elf_link_hash_entry *) dir;
3453 eind = (struct ppc_elf_link_hash_entry *) ind;
3455 edir->tls_mask |= eind->tls_mask;
3456 edir->has_sda_refs |= eind->has_sda_refs;
3458 /* If called to transfer flags for a weakdef during processing
3459 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3460 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3461 if (!(ELIMINATE_COPY_RELOCS
3462 && eind->elf.root.type != bfd_link_hash_indirect
3463 && edir->elf.dynamic_adjusted))
3464 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3466 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3467 edir->elf.ref_regular |= eind->elf.ref_regular;
3468 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3469 edir->elf.needs_plt |= eind->elf.needs_plt;
3470 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3472 if (eind->dyn_relocs != NULL)
3474 if (edir->dyn_relocs != NULL)
3476 struct elf_dyn_relocs **pp;
3477 struct elf_dyn_relocs *p;
3479 /* Add reloc counts against the indirect sym to the direct sym
3480 list. Merge any entries against the same section. */
3481 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3483 struct elf_dyn_relocs *q;
3485 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3486 if (q->sec == p->sec)
3488 q->pc_count += p->pc_count;
3489 q->count += p->count;
3496 *pp = edir->dyn_relocs;
3499 edir->dyn_relocs = eind->dyn_relocs;
3500 eind->dyn_relocs = NULL;
3503 /* If we were called to copy over info for a weak sym, that's all.
3504 You might think dyn_relocs need not be copied over; After all,
3505 both syms will be dynamic or both non-dynamic so we're just
3506 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3507 code in ppc_elf_adjust_dynamic_symbol needs to check for
3508 dyn_relocs in read-only sections, and it does so on what is the
3510 if (eind->elf.root.type != bfd_link_hash_indirect)
3513 /* Copy over the GOT refcount entries that we may have already seen to
3514 the symbol which just became indirect. */
3515 edir->elf.got.refcount += eind->elf.got.refcount;
3516 eind->elf.got.refcount = 0;
3518 /* And plt entries. */
3519 if (eind->elf.plt.plist != NULL)
3521 if (edir->elf.plt.plist != NULL)
3523 struct plt_entry **entp;
3524 struct plt_entry *ent;
3526 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3528 struct plt_entry *dent;
3530 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3531 if (dent->sec == ent->sec && dent->addend == ent->addend)
3533 dent->plt.refcount += ent->plt.refcount;
3540 *entp = edir->elf.plt.plist;
3543 edir->elf.plt.plist = eind->elf.plt.plist;
3544 eind->elf.plt.plist = NULL;
3547 if (eind->elf.dynindx != -1)
3549 if (edir->elf.dynindx != -1)
3550 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3551 edir->elf.dynstr_index);
3552 edir->elf.dynindx = eind->elf.dynindx;
3553 edir->elf.dynstr_index = eind->elf.dynstr_index;
3554 eind->elf.dynindx = -1;
3555 eind->elf.dynstr_index = 0;
3559 /* Hook called by the linker routine which adds symbols from an object
3560 file. We use it to put .comm items in .sbss, and not .bss. */
3563 ppc_elf_add_symbol_hook (bfd *abfd,
3564 struct bfd_link_info *info,
3565 Elf_Internal_Sym *sym,
3566 const char **namep ATTRIBUTE_UNUSED,
3567 flagword *flagsp ATTRIBUTE_UNUSED,
3571 if (sym->st_shndx == SHN_COMMON
3572 && !info->relocatable
3573 && is_ppc_elf (info->output_bfd)
3574 && sym->st_size <= elf_gp_size (abfd))
3576 /* Common symbols less than or equal to -G nn bytes are automatically
3578 struct ppc_elf_link_hash_table *htab;
3580 htab = ppc_elf_hash_table (info);
3581 if (htab->sbss == NULL)
3583 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3585 if (!htab->elf.dynobj)
3586 htab->elf.dynobj = abfd;
3588 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3591 if (htab->sbss == NULL)
3596 *valp = sym->st_size;
3599 if ((abfd->flags & DYNAMIC) == 0
3600 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3601 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3602 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3608 create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3610 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3612 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3614 if (lsect->sym == NULL)
3616 if (lsect->sym->root.type == bfd_link_hash_new)
3617 lsect->sym->non_elf = 0;
3618 lsect->sym->ref_regular = 1;
3619 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3623 /* Create a special linker section. */
3626 ppc_elf_create_linker_section (bfd *abfd,
3627 struct bfd_link_info *info,
3629 elf_linker_section_t *lsect)
3631 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3634 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3635 | SEC_LINKER_CREATED);
3637 /* Record the first bfd that needs the special sections. */
3638 if (!htab->elf.dynobj)
3639 htab->elf.dynobj = abfd;
3641 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3645 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3649 return create_sdata_sym (info, lsect);
3652 /* Find a linker generated pointer with a given addend and type. */
3654 static elf_linker_section_pointers_t *
3655 elf_find_pointer_linker_section
3656 (elf_linker_section_pointers_t *linker_pointers,
3658 elf_linker_section_t *lsect)
3660 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3661 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3662 return linker_pointers;
3667 /* Allocate a pointer to live in a linker created section. */
3670 elf_create_pointer_linker_section (bfd *abfd,
3671 elf_linker_section_t *lsect,
3672 struct elf_link_hash_entry *h,
3673 const Elf_Internal_Rela *rel)
3675 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3676 elf_linker_section_pointers_t *linker_section_ptr;
3677 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3680 BFD_ASSERT (lsect != NULL);
3682 /* Is this a global symbol? */
3685 struct ppc_elf_link_hash_entry *eh;
3687 /* Has this symbol already been allocated? If so, our work is done. */
3688 eh = (struct ppc_elf_link_hash_entry *) h;
3689 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3694 ptr_linker_section_ptr = &eh->linker_section_pointer;
3698 BFD_ASSERT (is_ppc_elf (abfd));
3700 /* Allocation of a pointer to a local symbol. */
3701 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3703 /* Allocate a table to hold the local symbols if first time. */
3706 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3709 amt *= sizeof (elf_linker_section_pointers_t *);
3710 ptr = bfd_zalloc (abfd, amt);
3715 elf_local_ptr_offsets (abfd) = ptr;
3718 /* Has this symbol already been allocated? If so, our work is done. */
3719 if (elf_find_pointer_linker_section (ptr[r_symndx],
3724 ptr_linker_section_ptr = &ptr[r_symndx];
3727 /* Allocate space for a pointer in the linker section, and allocate
3728 a new pointer record from internal memory. */
3729 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3730 amt = sizeof (elf_linker_section_pointers_t);
3731 linker_section_ptr = bfd_alloc (abfd, amt);
3733 if (!linker_section_ptr)
3736 linker_section_ptr->next = *ptr_linker_section_ptr;
3737 linker_section_ptr->addend = rel->r_addend;
3738 linker_section_ptr->lsect = lsect;
3739 *ptr_linker_section_ptr = linker_section_ptr;
3741 linker_section_ptr->offset = lsect->section->size;
3742 lsect->section->size += 4;
3746 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3747 lsect->name, (long) linker_section_ptr->offset,
3748 (long) lsect->section->size);
3754 static struct plt_entry **
3755 update_local_sym_info (bfd *abfd,
3756 Elf_Internal_Shdr *symtab_hdr,
3757 unsigned long r_symndx,
3760 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3761 struct plt_entry **local_plt;
3762 char *local_got_tls_masks;
3764 if (local_got_refcounts == NULL)
3766 bfd_size_type size = symtab_hdr->sh_info;
3768 size *= (sizeof (*local_got_refcounts)
3769 + sizeof (*local_plt)
3770 + sizeof (*local_got_tls_masks));
3771 local_got_refcounts = bfd_zalloc (abfd, size);
3772 if (local_got_refcounts == NULL)
3774 elf_local_got_refcounts (abfd) = local_got_refcounts;
3777 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3778 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3779 local_got_tls_masks[r_symndx] |= tls_type;
3780 if (tls_type != PLT_IFUNC)
3781 local_got_refcounts[r_symndx] += 1;
3782 return local_plt + r_symndx;
3786 update_plt_info (bfd *abfd, struct plt_entry **plist,
3787 asection *sec, bfd_vma addend)
3789 struct plt_entry *ent;
3793 for (ent = *plist; ent != NULL; ent = ent->next)
3794 if (ent->sec == sec && ent->addend == addend)
3798 bfd_size_type amt = sizeof (*ent);
3799 ent = bfd_alloc (abfd, amt);
3804 ent->addend = addend;
3805 ent->plt.refcount = 0;
3808 ent->plt.refcount += 1;
3812 static struct plt_entry *
3813 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3815 struct plt_entry *ent;
3819 for (ent = *plist; ent != NULL; ent = ent->next)
3820 if (ent->sec == sec && ent->addend == addend)
3826 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3828 return (r_type == R_PPC_PLTREL24
3829 || r_type == R_PPC_LOCAL24PC
3830 || r_type == R_PPC_REL24
3831 || r_type == R_PPC_REL14
3832 || r_type == R_PPC_REL14_BRTAKEN
3833 || r_type == R_PPC_REL14_BRNTAKEN
3834 || r_type == R_PPC_ADDR24
3835 || r_type == R_PPC_ADDR14
3836 || r_type == R_PPC_ADDR14_BRTAKEN
3837 || r_type == R_PPC_ADDR14_BRNTAKEN);
3841 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3843 (*_bfd_error_handler)
3844 (_("%B: relocation %s cannot be used when making a shared object"),
3846 ppc_elf_howto_table[r_type]->name);
3847 bfd_set_error (bfd_error_bad_value);
3850 /* Look through the relocs for a section during the first phase, and
3851 allocate space in the global offset table or procedure linkage
3855 ppc_elf_check_relocs (bfd *abfd,
3856 struct bfd_link_info *info,
3858 const Elf_Internal_Rela *relocs)
3860 struct ppc_elf_link_hash_table *htab;
3861 Elf_Internal_Shdr *symtab_hdr;
3862 struct elf_link_hash_entry **sym_hashes;
3863 const Elf_Internal_Rela *rel;
3864 const Elf_Internal_Rela *rel_end;
3865 asection *got2, *sreloc;
3866 struct elf_link_hash_entry *tga;
3868 if (info->relocatable)
3871 /* Don't do anything special with non-loaded, non-alloced sections.
3872 In particular, any relocs in such sections should not affect GOT
3873 and PLT reference counting (ie. we don't allow them to create GOT
3874 or PLT entries), there's no possibility or desire to optimize TLS
3875 relocs, and there's not much point in propagating relocs to shared
3876 libs that the dynamic linker won't relocate. */
3877 if ((sec->flags & SEC_ALLOC) == 0)
3881 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3885 BFD_ASSERT (is_ppc_elf (abfd));
3887 /* Initialize howto table if not already done. */
3888 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3889 ppc_elf_howto_init ();
3891 htab = ppc_elf_hash_table (info);
3892 if (htab->glink == NULL)
3894 if (htab->elf.dynobj == NULL)
3895 htab->elf.dynobj = abfd;
3896 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3899 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3900 FALSE, FALSE, TRUE);
3901 symtab_hdr = &elf_symtab_hdr (abfd);
3902 sym_hashes = elf_sym_hashes (abfd);
3903 got2 = bfd_get_section_by_name (abfd, ".got2");
3906 rel_end = relocs + sec->reloc_count;
3907 for (rel = relocs; rel < rel_end; rel++)
3909 unsigned long r_symndx;
3910 enum elf_ppc_reloc_type r_type;
3911 struct elf_link_hash_entry *h;
3914 r_symndx = ELF32_R_SYM (rel->r_info);
3915 if (r_symndx < symtab_hdr->sh_info)
3919 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3920 while (h->root.type == bfd_link_hash_indirect
3921 || h->root.type == bfd_link_hash_warning)
3922 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3924 /* PR15323, ref flags aren't set for references in the same
3926 h->root.non_ir_ref = 1;
3929 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3930 This shows up in particular in an R_PPC_ADDR32 in the eabi
3933 && htab->got == NULL
3934 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3936 if (htab->elf.dynobj == NULL)
3937 htab->elf.dynobj = abfd;
3938 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3940 BFD_ASSERT (h == htab->elf.hgot);
3944 r_type = ELF32_R_TYPE (rel->r_info);
3945 if (h == NULL && !htab->is_vxworks)
3947 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3952 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3954 struct plt_entry **ifunc;
3956 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3957 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3962 /* STT_GNU_IFUNC symbols must have a PLT entry;
3963 In a non-pie executable even when there are
3966 || is_branch_reloc (r_type))
3969 if (r_type == R_PPC_PLTREL24)
3971 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3973 addend = rel->r_addend;
3975 if (!update_plt_info (abfd, ifunc, got2, addend))
3981 if (!htab->is_vxworks
3982 && is_branch_reloc (r_type)
3987 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3988 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3989 /* We have a new-style __tls_get_addr call with a marker
3993 /* Mark this section as having an old-style call. */
3994 sec->has_tls_get_addr_call = 1;
4001 /* These special tls relocs tie a call to __tls_get_addr with
4002 its parameter symbol. */
4005 case R_PPC_GOT_TLSLD16:
4006 case R_PPC_GOT_TLSLD16_LO:
4007 case R_PPC_GOT_TLSLD16_HI:
4008 case R_PPC_GOT_TLSLD16_HA:
4009 tls_type = TLS_TLS | TLS_LD;
4012 case R_PPC_GOT_TLSGD16:
4013 case R_PPC_GOT_TLSGD16_LO:
4014 case R_PPC_GOT_TLSGD16_HI:
4015 case R_PPC_GOT_TLSGD16_HA:
4016 tls_type = TLS_TLS | TLS_GD;
4019 case R_PPC_GOT_TPREL16:
4020 case R_PPC_GOT_TPREL16_LO:
4021 case R_PPC_GOT_TPREL16_HI:
4022 case R_PPC_GOT_TPREL16_HA:
4023 if (!info->executable)
4024 info->flags |= DF_STATIC_TLS;
4025 tls_type = TLS_TLS | TLS_TPREL;
4028 case R_PPC_GOT_DTPREL16:
4029 case R_PPC_GOT_DTPREL16_LO:
4030 case R_PPC_GOT_DTPREL16_HI:
4031 case R_PPC_GOT_DTPREL16_HA:
4032 tls_type = TLS_TLS | TLS_DTPREL;
4034 sec->has_tls_reloc = 1;
4037 /* GOT16 relocations */
4039 case R_PPC_GOT16_LO:
4040 case R_PPC_GOT16_HI:
4041 case R_PPC_GOT16_HA:
4042 /* This symbol requires a global offset table entry. */
4043 if (htab->got == NULL)
4045 if (htab->elf.dynobj == NULL)
4046 htab->elf.dynobj = abfd;
4047 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4052 h->got.refcount += 1;
4053 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4056 /* This is a global offset table entry for a local symbol. */
4057 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4060 /* We may also need a plt entry if the symbol turns out to be
4062 if (h != NULL && !info->shared)
4064 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4069 /* Indirect .sdata relocation. */
4070 case R_PPC_EMB_SDAI16:
4073 bad_shared_reloc (abfd, r_type);
4076 if (htab->sdata[0].section == NULL
4077 && !ppc_elf_create_linker_section (abfd, info, 0,
4080 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
4085 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4086 h->non_got_ref = TRUE;
4090 /* Indirect .sdata2 relocation. */
4091 case R_PPC_EMB_SDA2I16:
4094 bad_shared_reloc (abfd, r_type);
4097 if (htab->sdata[1].section == NULL
4098 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
4101 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
4106 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4107 h->non_got_ref = TRUE;
4111 case R_PPC_VLE_SDAREL_LO16A:
4112 case R_PPC_VLE_SDAREL_LO16D:
4113 case R_PPC_VLE_SDAREL_HI16A:
4114 case R_PPC_VLE_SDAREL_HI16D:
4115 case R_PPC_VLE_SDAREL_HA16A:
4116 case R_PPC_VLE_SDAREL_HA16D:
4117 case R_PPC_SDAREL16:
4118 if (htab->sdata[0].sym == NULL
4119 && !create_sdata_sym (info, &htab->sdata[0]))
4122 if (htab->sdata[1].sym == NULL
4123 && !create_sdata_sym (info, &htab->sdata[1]))
4128 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4129 h->non_got_ref = TRUE;
4133 case R_PPC_VLE_REL8:
4134 case R_PPC_VLE_REL15:
4135 case R_PPC_VLE_REL24:
4136 case R_PPC_VLE_LO16A:
4137 case R_PPC_VLE_LO16D:
4138 case R_PPC_VLE_HI16A:
4139 case R_PPC_VLE_HI16D:
4140 case R_PPC_VLE_HA16A:
4141 case R_PPC_VLE_HA16D:
4144 case R_PPC_EMB_SDA2REL:
4147 bad_shared_reloc (abfd, r_type);
4150 if (htab->sdata[1].sym == NULL
4151 && !create_sdata_sym (info, &htab->sdata[1]))
4155 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4156 h->non_got_ref = TRUE;
4160 case R_PPC_VLE_SDA21_LO:
4161 case R_PPC_VLE_SDA21:
4162 case R_PPC_EMB_SDA21:
4163 case R_PPC_EMB_RELSDA:
4166 bad_shared_reloc (abfd, r_type);
4169 if (htab->sdata[0].sym == NULL
4170 && !create_sdata_sym (info, &htab->sdata[0]))
4172 if (htab->sdata[1].sym == NULL
4173 && !create_sdata_sym (info, &htab->sdata[1]))
4177 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4178 h->non_got_ref = TRUE;
4182 case R_PPC_EMB_NADDR32:
4183 case R_PPC_EMB_NADDR16:
4184 case R_PPC_EMB_NADDR16_LO:
4185 case R_PPC_EMB_NADDR16_HI:
4186 case R_PPC_EMB_NADDR16_HA:
4189 bad_shared_reloc (abfd, r_type);
4193 h->non_got_ref = TRUE;
4196 case R_PPC_PLTREL24:
4201 case R_PPC_PLTREL32:
4202 case R_PPC_PLT16_LO:
4203 case R_PPC_PLT16_HI:
4204 case R_PPC_PLT16_HA:
4206 fprintf (stderr, "Reloc requires a PLT entry\n");
4208 /* This symbol requires a procedure linkage table entry. We
4209 actually build the entry in finish_dynamic_symbol,
4210 because this might be a case of linking PIC code without
4211 linking in any dynamic objects, in which case we don't
4212 need to generate a procedure linkage table after all. */
4216 /* It does not make sense to have a procedure linkage
4217 table entry for a local symbol. */
4218 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
4219 abfd, sec, rel->r_offset,
4220 ppc_elf_howto_table[r_type]->name);
4221 bfd_set_error (bfd_error_bad_value);
4228 if (r_type == R_PPC_PLTREL24)
4230 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4232 addend = rel->r_addend;
4235 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4240 /* The following relocations don't need to propagate the
4241 relocation if linking a shared object since they are
4242 section relative. */
4244 case R_PPC_SECTOFF_LO:
4245 case R_PPC_SECTOFF_HI:
4246 case R_PPC_SECTOFF_HA:
4247 case R_PPC_DTPREL16:
4248 case R_PPC_DTPREL16_LO:
4249 case R_PPC_DTPREL16_HI:
4250 case R_PPC_DTPREL16_HA:
4255 case R_PPC_REL16_LO:
4256 case R_PPC_REL16_HI:
4257 case R_PPC_REL16_HA:
4258 ppc_elf_tdata (abfd)->has_rel16 = 1;
4261 /* These are just markers. */
4263 case R_PPC_EMB_MRKREF:
4267 case R_PPC_RELAX_PLT:
4268 case R_PPC_RELAX_PLTREL24:
4271 /* These should only appear in dynamic objects. */
4273 case R_PPC_GLOB_DAT:
4274 case R_PPC_JMP_SLOT:
4275 case R_PPC_RELATIVE:
4276 case R_PPC_IRELATIVE:
4279 /* These aren't handled yet. We'll report an error later. */
4281 case R_PPC_EMB_RELSEC16:
4282 case R_PPC_EMB_RELST_LO:
4283 case R_PPC_EMB_RELST_HI:
4284 case R_PPC_EMB_RELST_HA:
4285 case R_PPC_EMB_BIT_FLD:
4288 /* This refers only to functions defined in the shared library. */
4289 case R_PPC_LOCAL24PC:
4290 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4292 htab->plt_type = PLT_OLD;
4293 htab->old_bfd = abfd;
4295 if (h != NULL && h->type == STT_GNU_IFUNC)
4299 info->callbacks->einfo (_("%P: %H: @local call to ifunc %s\n"),
4300 abfd, sec, rel->r_offset,
4301 h->root.root.string);
4302 bfd_set_error (bfd_error_bad_value);
4306 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4311 /* This relocation describes the C++ object vtable hierarchy.
4312 Reconstruct it for later use during GC. */
4313 case R_PPC_GNU_VTINHERIT:
4314 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4318 /* This relocation describes which C++ vtable entries are actually
4319 used. Record for later use during GC. */
4320 case R_PPC_GNU_VTENTRY:
4321 BFD_ASSERT (h != NULL);
4323 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4327 /* We shouldn't really be seeing these. */
4330 case R_PPC_TPREL16_LO:
4331 case R_PPC_TPREL16_HI:
4332 case R_PPC_TPREL16_HA:
4333 if (!info->executable)
4334 info->flags |= DF_STATIC_TLS;
4338 case R_PPC_DTPMOD32:
4339 case R_PPC_DTPREL32:
4345 && (sec->flags & SEC_CODE) != 0
4347 && htab->plt_type == PLT_UNSET)
4349 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4350 the start of a function, which assembles to a REL32
4351 reference to .got2. If we detect one of these, then
4352 force the old PLT layout because the linker cannot
4353 reliably deduce the GOT pointer value needed for
4356 Elf_Internal_Sym *isym;
4358 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4363 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4366 htab->plt_type = PLT_OLD;
4367 htab->old_bfd = abfd;
4370 if (h == NULL || h == htab->elf.hgot)
4376 case R_PPC_ADDR16_LO:
4377 case R_PPC_ADDR16_HI:
4378 case R_PPC_ADDR16_HA:
4381 if (h != NULL && !info->shared)
4383 /* We may need a plt entry if the symbol turns out to be
4384 a function defined in a dynamic object. */
4385 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4388 /* We may need a copy reloc too. */
4390 h->pointer_equality_needed = 1;
4396 case R_PPC_REL14_BRTAKEN:
4397 case R_PPC_REL14_BRNTAKEN:
4400 if (h == htab->elf.hgot)
4402 if (htab->plt_type == PLT_UNSET)
4404 htab->plt_type = PLT_OLD;
4405 htab->old_bfd = abfd;
4413 case R_PPC_ADDR14_BRTAKEN:
4414 case R_PPC_ADDR14_BRNTAKEN:
4415 if (h != NULL && !info->shared)
4417 /* We may need a plt entry if the symbol turns out to be
4418 a function defined in a dynamic object. */
4420 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4426 /* If we are creating a shared library, and this is a reloc
4427 against a global symbol, or a non PC relative reloc
4428 against a local symbol, then we need to copy the reloc
4429 into the shared library. However, if we are linking with
4430 -Bsymbolic, we do not need to copy a reloc against a
4431 global symbol which is defined in an object we are
4432 including in the link (i.e., DEF_REGULAR is set). At
4433 this point we have not seen all the input files, so it is
4434 possible that DEF_REGULAR is not set now but will be set
4435 later (it is never cleared). In case of a weak definition,
4436 DEF_REGULAR may be cleared later by a strong definition in
4437 a shared library. We account for that possibility below by
4438 storing information in the dyn_relocs field of the hash
4439 table entry. A similar situation occurs when creating
4440 shared libraries and symbol visibility changes render the
4443 If on the other hand, we are creating an executable, we
4444 may need to keep relocations for symbols satisfied by a
4445 dynamic library if we manage to avoid copy relocs for the
4448 && (must_be_dyn_reloc (info, r_type)
4450 && (!SYMBOLIC_BIND (info, h)
4451 || h->root.type == bfd_link_hash_defweak
4452 || !h->def_regular))))
4453 || (ELIMINATE_COPY_RELOCS
4456 && (h->root.type == bfd_link_hash_defweak
4457 || !h->def_regular)))
4461 "ppc_elf_check_relocs needs to "
4462 "create relocation for %s\n",
4463 (h && h->root.root.string
4464 ? h->root.root.string : "<unknown>"));
4468 if (htab->elf.dynobj == NULL)
4469 htab->elf.dynobj = abfd;
4471 sreloc = _bfd_elf_make_dynamic_reloc_section
4472 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4478 /* If this is a global symbol, we count the number of
4479 relocations we need for this symbol. */
4482 struct elf_dyn_relocs *p;
4483 struct elf_dyn_relocs **rel_head;
4485 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4487 if (p == NULL || p->sec != sec)
4489 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4492 p->next = *rel_head;
4499 if (!must_be_dyn_reloc (info, r_type))
4504 /* Track dynamic relocs needed for local syms too.
4505 We really need local syms available to do this
4507 struct ppc_dyn_relocs *p;
4508 struct ppc_dyn_relocs **rel_head;
4509 bfd_boolean is_ifunc;
4512 Elf_Internal_Sym *isym;
4514 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4519 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4523 vpp = &elf_section_data (s)->local_dynrel;
4524 rel_head = (struct ppc_dyn_relocs **) vpp;
4525 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4527 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4529 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4531 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4534 p->next = *rel_head;
4537 p->ifunc = is_ifunc;
4552 /* Merge object attributes from IBFD into OBFD. Raise an error if
4553 there are conflicting attributes. */
4555 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4557 obj_attribute *in_attr, *in_attrs;
4558 obj_attribute *out_attr, *out_attrs;
4560 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4562 /* This is the first object. Copy the attributes. */
4563 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4565 /* Use the Tag_null value to indicate the attributes have been
4567 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4572 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4573 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4575 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4576 non-conflicting ones. */
4577 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4578 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4579 if (in_attr->i != out_attr->i)
4582 if (out_attr->i == 0)
4583 out_attr->i = in_attr->i;
4584 else if (in_attr->i == 0)
4586 else if (out_attr->i == 1 && in_attr->i == 2)
4588 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4589 else if (out_attr->i == 1 && in_attr->i == 3)
4591 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4593 else if (out_attr->i == 3 && in_attr->i == 1)
4595 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4597 else if (out_attr->i == 3 && in_attr->i == 2)
4599 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4601 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4603 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4604 else if (in_attr->i > 3)
4606 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4610 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4614 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4615 merge non-conflicting ones. */
4616 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4617 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4618 if (in_attr->i != out_attr->i)
4620 const char *in_abi = NULL, *out_abi = NULL;
4624 case 1: in_abi = "generic"; break;
4625 case 2: in_abi = "AltiVec"; break;
4626 case 3: in_abi = "SPE"; break;
4629 switch (out_attr->i)
4631 case 1: out_abi = "generic"; break;
4632 case 2: out_abi = "AltiVec"; break;
4633 case 3: out_abi = "SPE"; break;
4637 if (out_attr->i == 0)
4638 out_attr->i = in_attr->i;
4639 else if (in_attr->i == 0)
4641 /* For now, allow generic to transition to AltiVec or SPE
4642 without a warning. If GCC marked files with their stack
4643 alignment and used don't-care markings for files which are
4644 not affected by the vector ABI, we could warn about this
4646 else if (out_attr->i == 1)
4647 out_attr->i = in_attr->i;
4648 else if (in_attr->i == 1)
4650 else if (in_abi == NULL)
4652 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4654 else if (out_abi == NULL)
4656 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4660 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4661 ibfd, obfd, in_abi, out_abi);
4664 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4665 and merge non-conflicting ones. */
4666 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4667 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4668 if (in_attr->i != out_attr->i)
4671 if (out_attr->i == 0)
4672 out_attr->i = in_attr->i;
4673 else if (in_attr->i == 0)
4675 else if (out_attr->i == 1 && in_attr->i == 2)
4677 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4678 else if (out_attr->i == 2 && in_attr->i == 1)
4680 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4681 else if (in_attr->i > 2)
4683 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4687 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4691 /* Merge Tag_compatibility attributes and any common GNU ones. */
4692 _bfd_elf_merge_object_attributes (ibfd, obfd);
4697 /* Merge backend specific data from an object file to the output
4698 object file when linking. */
4701 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4707 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4710 /* Check if we have the same endianness. */
4711 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4714 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4717 new_flags = elf_elfheader (ibfd)->e_flags;
4718 old_flags = elf_elfheader (obfd)->e_flags;
4719 if (!elf_flags_init (obfd))
4721 /* First call, no flags set. */
4722 elf_flags_init (obfd) = TRUE;
4723 elf_elfheader (obfd)->e_flags = new_flags;
4726 /* Compatible flags are ok. */
4727 else if (new_flags == old_flags)
4730 /* Incompatible flags. */
4733 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4734 to be linked with either. */
4736 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4737 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4740 (*_bfd_error_handler)
4741 (_("%B: compiled with -mrelocatable and linked with "
4742 "modules compiled normally"), ibfd);
4744 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4745 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4748 (*_bfd_error_handler)
4749 (_("%B: compiled normally and linked with "
4750 "modules compiled with -mrelocatable"), ibfd);
4753 /* The output is -mrelocatable-lib iff both the input files are. */
4754 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4755 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4757 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4758 but each input file is either -mrelocatable or -mrelocatable-lib. */
4759 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4760 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4761 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4762 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4764 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4765 any module uses it. */
4766 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4768 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4769 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4771 /* Warn about any other mismatches. */
4772 if (new_flags != old_flags)
4775 (*_bfd_error_handler)
4776 (_("%B: uses different e_flags (0x%lx) fields "
4777 "than previous modules (0x%lx)"),
4778 ibfd, (long) new_flags, (long) old_flags);
4783 bfd_set_error (bfd_error_bad_value);
4792 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4794 split16_format_type split16_format)
4797 unsigned int insn, top5;
4799 insn = bfd_get_32 (output_bfd, loc);
4800 top5 = value & 0xf800;
4801 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4803 insn |= value & 0x7ff;
4804 bfd_put_32 (output_bfd, insn, loc);
4808 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4809 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4811 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4812 struct bfd_link_info *info)
4814 struct ppc_elf_link_hash_table *htab;
4817 htab = ppc_elf_hash_table (info);
4819 if (htab->plt_type == PLT_UNSET)
4821 struct elf_link_hash_entry *h;
4823 if (htab->params->plt_style == PLT_OLD)
4824 htab->plt_type = PLT_OLD;
4825 else if (info->shared
4826 && htab->elf.dynamic_sections_created
4827 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4828 FALSE, FALSE, TRUE)) != NULL
4829 && (h->type == STT_FUNC
4832 && !(SYMBOL_CALLS_LOCAL (info, h)
4833 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4834 && h->root.type == bfd_link_hash_undefweak)))
4836 /* Profiling of shared libs (and pies) is not supported with
4837 secure plt, because ppc32 does profiling before a
4838 function prologue and a secure plt pic call stubs needs
4839 r30 to be set up. */
4840 htab->plt_type = PLT_OLD;
4845 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4847 /* Look through the reloc flags left by ppc_elf_check_relocs.
4848 Use the old style bss plt if a file makes plt calls
4849 without using the new relocs, and if ld isn't given
4850 --secure-plt and we never see REL16 relocs. */
4851 if (plt_type == PLT_UNSET)
4853 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4854 if (is_ppc_elf (ibfd))
4856 if (ppc_elf_tdata (ibfd)->has_rel16)
4858 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4861 htab->old_bfd = ibfd;
4865 htab->plt_type = plt_type;
4868 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4870 if (htab->old_bfd != NULL)
4871 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4874 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4877 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4879 if (htab->plt_type == PLT_NEW)
4881 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4882 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4884 /* The new PLT is a loaded section. */
4885 if (htab->plt != NULL
4886 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4889 /* The new GOT is not executable. */
4890 if (htab->got != NULL
4891 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4896 /* Stop an unused .glink section from affecting .text alignment. */
4897 if (htab->glink != NULL
4898 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4901 return htab->plt_type == PLT_NEW;
4904 /* Return the section that should be marked against GC for a given
4908 ppc_elf_gc_mark_hook (asection *sec,
4909 struct bfd_link_info *info,
4910 Elf_Internal_Rela *rel,
4911 struct elf_link_hash_entry *h,
4912 Elf_Internal_Sym *sym)
4915 switch (ELF32_R_TYPE (rel->r_info))
4917 case R_PPC_GNU_VTINHERIT:
4918 case R_PPC_GNU_VTENTRY:
4922 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4925 /* Update the got, plt and dynamic reloc reference counts for the
4926 section being removed. */
4929 ppc_elf_gc_sweep_hook (bfd *abfd,
4930 struct bfd_link_info *info,
4932 const Elf_Internal_Rela *relocs)
4934 struct ppc_elf_link_hash_table *htab;
4935 Elf_Internal_Shdr *symtab_hdr;
4936 struct elf_link_hash_entry **sym_hashes;
4937 bfd_signed_vma *local_got_refcounts;
4938 const Elf_Internal_Rela *rel, *relend;
4941 if (info->relocatable)
4944 if ((sec->flags & SEC_ALLOC) == 0)
4947 elf_section_data (sec)->local_dynrel = NULL;
4949 htab = ppc_elf_hash_table (info);
4950 symtab_hdr = &elf_symtab_hdr (abfd);
4951 sym_hashes = elf_sym_hashes (abfd);
4952 local_got_refcounts = elf_local_got_refcounts (abfd);
4953 got2 = bfd_get_section_by_name (abfd, ".got2");
4955 relend = relocs + sec->reloc_count;
4956 for (rel = relocs; rel < relend; rel++)
4958 unsigned long r_symndx;
4959 enum elf_ppc_reloc_type r_type;
4960 struct elf_link_hash_entry *h = NULL;
4962 r_symndx = ELF32_R_SYM (rel->r_info);
4963 if (r_symndx >= symtab_hdr->sh_info)
4965 struct elf_dyn_relocs **pp, *p;
4966 struct ppc_elf_link_hash_entry *eh;
4968 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4969 while (h->root.type == bfd_link_hash_indirect
4970 || h->root.type == bfd_link_hash_warning)
4971 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4972 eh = (struct ppc_elf_link_hash_entry *) h;
4974 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4977 /* Everything must go for SEC. */
4983 r_type = ELF32_R_TYPE (rel->r_info);
4984 if (!htab->is_vxworks
4986 && local_got_refcounts != NULL
4988 || is_branch_reloc (r_type)))
4990 struct plt_entry **local_plt = (struct plt_entry **)
4991 (local_got_refcounts + symtab_hdr->sh_info);
4992 char *local_got_tls_masks = (char *)
4993 (local_plt + symtab_hdr->sh_info);
4994 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4996 struct plt_entry **ifunc = local_plt + r_symndx;
4998 struct plt_entry *ent;
5000 if (r_type == R_PPC_PLTREL24 && info->shared)
5001 addend = rel->r_addend;
5002 ent = find_plt_ent (ifunc, got2, addend);
5003 if (ent->plt.refcount > 0)
5004 ent->plt.refcount -= 1;
5011 case R_PPC_GOT_TLSLD16:
5012 case R_PPC_GOT_TLSLD16_LO:
5013 case R_PPC_GOT_TLSLD16_HI:
5014 case R_PPC_GOT_TLSLD16_HA:
5015 case R_PPC_GOT_TLSGD16:
5016 case R_PPC_GOT_TLSGD16_LO:
5017 case R_PPC_GOT_TLSGD16_HI:
5018 case R_PPC_GOT_TLSGD16_HA:
5019 case R_PPC_GOT_TPREL16:
5020 case R_PPC_GOT_TPREL16_LO:
5021 case R_PPC_GOT_TPREL16_HI:
5022 case R_PPC_GOT_TPREL16_HA:
5023 case R_PPC_GOT_DTPREL16:
5024 case R_PPC_GOT_DTPREL16_LO:
5025 case R_PPC_GOT_DTPREL16_HI:
5026 case R_PPC_GOT_DTPREL16_HA:
5028 case R_PPC_GOT16_LO:
5029 case R_PPC_GOT16_HI:
5030 case R_PPC_GOT16_HA:
5033 if (h->got.refcount > 0)
5037 struct plt_entry *ent;
5039 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5040 if (ent != NULL && ent->plt.refcount > 0)
5041 ent->plt.refcount -= 1;
5044 else if (local_got_refcounts != NULL)
5046 if (local_got_refcounts[r_symndx] > 0)
5047 local_got_refcounts[r_symndx]--;
5053 case R_PPC_REL14_BRTAKEN:
5054 case R_PPC_REL14_BRNTAKEN:
5056 if (h == NULL || h == htab->elf.hgot)
5063 case R_PPC_ADDR16_LO:
5064 case R_PPC_ADDR16_HI:
5065 case R_PPC_ADDR16_HA:
5067 case R_PPC_ADDR14_BRTAKEN:
5068 case R_PPC_ADDR14_BRNTAKEN:
5075 case R_PPC_PLTREL24:
5076 case R_PPC_PLTREL32:
5077 case R_PPC_PLT16_LO:
5078 case R_PPC_PLT16_HI:
5079 case R_PPC_PLT16_HA:
5083 struct plt_entry *ent;
5085 if (r_type == R_PPC_PLTREL24 && info->shared)
5086 addend = rel->r_addend;
5087 ent = find_plt_ent (&h->plt.plist, got2, addend);
5088 if (ent != NULL && ent->plt.refcount > 0)
5089 ent->plt.refcount -= 1;
5100 /* Set plt output section type, htab->tls_get_addr, and call the
5101 generic ELF tls_setup function. */
5104 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5106 struct ppc_elf_link_hash_table *htab;
5108 htab = ppc_elf_hash_table (info);
5109 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5110 FALSE, FALSE, TRUE);
5111 if (!htab->params->no_tls_get_addr_opt)
5113 struct elf_link_hash_entry *opt, *tga;
5114 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5115 FALSE, FALSE, TRUE);
5117 && (opt->root.type == bfd_link_hash_defined
5118 || opt->root.type == bfd_link_hash_defweak))
5120 /* If glibc supports an optimized __tls_get_addr call stub,
5121 signalled by the presence of __tls_get_addr_opt, and we'll
5122 be calling __tls_get_addr via a plt call stub, then
5123 make __tls_get_addr point to __tls_get_addr_opt. */
5124 tga = htab->tls_get_addr;
5125 if (htab->elf.dynamic_sections_created
5127 && (tga->type == STT_FUNC
5129 && !(SYMBOL_CALLS_LOCAL (info, tga)
5130 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5131 && tga->root.type == bfd_link_hash_undefweak)))
5133 struct plt_entry *ent;
5134 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5135 if (ent->plt.refcount > 0)
5139 tga->root.type = bfd_link_hash_indirect;
5140 tga->root.u.i.link = &opt->root;
5141 ppc_elf_copy_indirect_symbol (info, opt, tga);
5142 if (opt->dynindx != -1)
5144 /* Use __tls_get_addr_opt in dynamic relocations. */
5146 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5148 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5151 htab->tls_get_addr = opt;
5156 htab->params->no_tls_get_addr_opt = TRUE;
5158 if (htab->plt_type == PLT_NEW
5159 && htab->plt != NULL
5160 && htab->plt->output_section != NULL)
5162 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5163 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5166 return _bfd_elf_tls_setup (obfd, info);
5169 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5173 branch_reloc_hash_match (const bfd *ibfd,
5174 const Elf_Internal_Rela *rel,
5175 const struct elf_link_hash_entry *hash)
5177 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5178 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5179 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5181 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5183 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5184 struct elf_link_hash_entry *h;
5186 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5187 while (h->root.type == bfd_link_hash_indirect
5188 || h->root.type == bfd_link_hash_warning)
5189 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5196 /* Run through all the TLS relocs looking for optimization
5200 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5201 struct bfd_link_info *info)
5205 struct ppc_elf_link_hash_table *htab;
5208 if (info->relocatable || !info->executable)
5211 htab = ppc_elf_hash_table (info);
5215 /* Make two passes through the relocs. First time check that tls
5216 relocs involved in setting up a tls_get_addr call are indeed
5217 followed by such a call. If they are not, don't do any tls
5218 optimization. On the second pass twiddle tls_mask flags to
5219 notify relocate_section that optimization can be done, and
5220 adjust got and plt refcounts. */
5221 for (pass = 0; pass < 2; ++pass)
5222 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5224 Elf_Internal_Sym *locsyms = NULL;
5225 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5226 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5228 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5229 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5231 Elf_Internal_Rela *relstart, *rel, *relend;
5232 int expecting_tls_get_addr = 0;
5234 /* Read the relocations. */
5235 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5237 if (relstart == NULL)
5240 relend = relstart + sec->reloc_count;
5241 for (rel = relstart; rel < relend; rel++)
5243 enum elf_ppc_reloc_type r_type;
5244 unsigned long r_symndx;
5245 struct elf_link_hash_entry *h = NULL;
5247 char tls_set, tls_clear;
5248 bfd_boolean is_local;
5249 bfd_signed_vma *got_count;
5251 r_symndx = ELF32_R_SYM (rel->r_info);
5252 if (r_symndx >= symtab_hdr->sh_info)
5254 struct elf_link_hash_entry **sym_hashes;
5256 sym_hashes = elf_sym_hashes (ibfd);
5257 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5258 while (h->root.type == bfd_link_hash_indirect
5259 || h->root.type == bfd_link_hash_warning)
5260 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5268 r_type = ELF32_R_TYPE (rel->r_info);
5269 /* If this section has old-style __tls_get_addr calls
5270 without marker relocs, then check that each
5271 __tls_get_addr call reloc is preceded by a reloc
5272 that conceivably belongs to the __tls_get_addr arg
5273 setup insn. If we don't find matching arg setup
5274 relocs, don't do any tls optimization. */
5276 && sec->has_tls_get_addr_call
5278 && h == htab->tls_get_addr
5279 && !expecting_tls_get_addr
5280 && is_branch_reloc (r_type))
5282 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5283 "TLS optimization disabled\n",
5284 ibfd, sec, rel->r_offset);
5285 if (elf_section_data (sec)->relocs != relstart)
5290 expecting_tls_get_addr = 0;
5293 case R_PPC_GOT_TLSLD16:
5294 case R_PPC_GOT_TLSLD16_LO:
5295 expecting_tls_get_addr = 1;
5298 case R_PPC_GOT_TLSLD16_HI:
5299 case R_PPC_GOT_TLSLD16_HA:
5300 /* These relocs should never be against a symbol
5301 defined in a shared lib. Leave them alone if
5302 that turns out to be the case. */
5311 case R_PPC_GOT_TLSGD16:
5312 case R_PPC_GOT_TLSGD16_LO:
5313 expecting_tls_get_addr = 1;
5316 case R_PPC_GOT_TLSGD16_HI:
5317 case R_PPC_GOT_TLSGD16_HA:
5323 tls_set = TLS_TLS | TLS_TPRELGD;
5327 case R_PPC_GOT_TPREL16:
5328 case R_PPC_GOT_TPREL16_LO:
5329 case R_PPC_GOT_TPREL16_HI:
5330 case R_PPC_GOT_TPREL16_HA:
5335 tls_clear = TLS_TPREL;
5343 expecting_tls_get_addr = 2;
5354 if (!expecting_tls_get_addr
5355 || (expecting_tls_get_addr == 1
5356 && !sec->has_tls_get_addr_call))
5359 if (rel + 1 < relend
5360 && branch_reloc_hash_match (ibfd, rel + 1,
5361 htab->tls_get_addr))
5364 /* Uh oh, we didn't find the expected call. We
5365 could just mark this symbol to exclude it
5366 from tls optimization but it's safer to skip
5367 the entire optimization. */
5368 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5369 "TLS optimization disabled\n"),
5370 ibfd, sec, rel->r_offset);
5371 if (elf_section_data (sec)->relocs != relstart)
5376 if (expecting_tls_get_addr)
5378 struct plt_entry *ent;
5382 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5383 addend = rel[1].r_addend;
5384 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5386 if (ent != NULL && ent->plt.refcount > 0)
5387 ent->plt.refcount -= 1;
5389 if (expecting_tls_get_addr == 2)
5395 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5396 got_count = &h->got.refcount;
5400 bfd_signed_vma *lgot_refs;
5401 struct plt_entry **local_plt;
5404 if (locsyms == NULL)
5406 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5407 if (locsyms == NULL)
5408 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5409 symtab_hdr->sh_info,
5410 0, NULL, NULL, NULL);
5411 if (locsyms == NULL)
5413 if (elf_section_data (sec)->relocs != relstart)
5418 lgot_refs = elf_local_got_refcounts (ibfd);
5419 if (lgot_refs == NULL)
5421 local_plt = (struct plt_entry **)
5422 (lgot_refs + symtab_hdr->sh_info);
5423 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5424 tls_mask = &lgot_masks[r_symndx];
5425 got_count = &lgot_refs[r_symndx];
5430 /* We managed to get rid of a got entry. */
5435 *tls_mask |= tls_set;
5436 *tls_mask &= ~tls_clear;
5439 if (elf_section_data (sec)->relocs != relstart)
5444 && (symtab_hdr->contents != (unsigned char *) locsyms))
5446 if (!info->keep_memory)
5449 symtab_hdr->contents = (unsigned char *) locsyms;
5455 /* Return true if we have dynamic relocs that apply to read-only sections. */
5458 readonly_dynrelocs (struct elf_link_hash_entry *h)
5460 struct elf_dyn_relocs *p;
5462 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5464 asection *s = p->sec->output_section;
5467 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5468 == (SEC_READONLY | SEC_ALLOC)))
5474 /* Adjust a symbol defined by a dynamic object and referenced by a
5475 regular object. The current definition is in some section of the
5476 dynamic object, but we're not including those sections. We have to
5477 change the definition to something the rest of the link can
5481 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5482 struct elf_link_hash_entry *h)
5484 struct ppc_elf_link_hash_table *htab;
5488 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5489 h->root.root.string);
5492 /* Make sure we know what is going on here. */
5493 htab = ppc_elf_hash_table (info);
5494 BFD_ASSERT (htab->elf.dynobj != NULL
5496 || h->type == STT_GNU_IFUNC
5497 || h->u.weakdef != NULL
5500 && !h->def_regular)));
5502 /* Deal with function syms. */
5503 if (h->type == STT_FUNC
5504 || h->type == STT_GNU_IFUNC
5507 /* Clear procedure linkage table information for any symbol that
5508 won't need a .plt entry. */
5509 struct plt_entry *ent;
5510 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5511 if (ent->plt.refcount > 0)
5514 || (h->type != STT_GNU_IFUNC
5515 && (SYMBOL_CALLS_LOCAL (info, h)
5516 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5517 && h->root.type == bfd_link_hash_undefweak))))
5519 /* A PLT entry is not required/allowed when:
5521 1. We are not using ld.so; because then the PLT entry
5522 can't be set up, so we can't use one. In this case,
5523 ppc_elf_adjust_dynamic_symbol won't even be called.
5525 2. GC has rendered the entry unused.
5527 3. We know for certain that a call to this symbol
5528 will go to this object, or will remain undefined. */
5529 h->plt.plist = NULL;
5534 /* After adjust_dynamic_symbol, non_got_ref set in the
5535 non-shared case means that we have allocated space in
5536 .dynbss for the symbol and thus dyn_relocs for this
5537 symbol should be discarded.
5538 If we get here we know we are making a PLT entry for this
5539 symbol, and in an executable we'd normally resolve
5540 relocations against this symbol to the PLT entry. Allow
5541 dynamic relocs if the reference is weak, and the dynamic
5542 relocs will not cause text relocation. */
5543 if (!h->ref_regular_nonweak
5545 && h->type != STT_GNU_IFUNC
5546 && !htab->is_vxworks
5547 && !ppc_elf_hash_entry (h)->has_sda_refs
5548 && !readonly_dynrelocs (h))
5554 h->plt.plist = NULL;
5556 /* If this is a weak symbol, and there is a real definition, the
5557 processor independent code will have arranged for us to see the
5558 real definition first, and we can just use the same value. */
5559 if (h->u.weakdef != NULL)
5561 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5562 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5563 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5564 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5565 if (ELIMINATE_COPY_RELOCS)
5566 h->non_got_ref = h->u.weakdef->non_got_ref;
5570 /* This is a reference to a symbol defined by a dynamic object which
5571 is not a function. */
5573 /* If we are creating a shared library, we must presume that the
5574 only references to the symbol are via the global offset table.
5575 For such cases we need not do anything here; the relocations will
5576 be handled correctly by relocate_section. */
5580 /* If there are no references to this symbol that do not use the
5581 GOT, we don't need to generate a copy reloc. */
5582 if (!h->non_got_ref)
5585 /* If we didn't find any dynamic relocs in read-only sections, then
5586 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5587 We can't do this if there are any small data relocations. This
5588 doesn't work on VxWorks, where we can not have dynamic
5589 relocations (other than copy and jump slot relocations) in an
5591 if (ELIMINATE_COPY_RELOCS
5592 && !ppc_elf_hash_entry (h)->has_sda_refs
5593 && !htab->is_vxworks
5595 && !readonly_dynrelocs (h))
5601 /* We must allocate the symbol in our .dynbss section, which will
5602 become part of the .bss section of the executable. There will be
5603 an entry for this symbol in the .dynsym section. The dynamic
5604 object will contain position independent code, so all references
5605 from the dynamic object to this symbol will go through the global
5606 offset table. The dynamic linker will use the .dynsym entry to
5607 determine the address it must put in the global offset table, so
5608 both the dynamic object and the regular object will refer to the
5609 same memory location for the variable.
5611 Of course, if the symbol is referenced using SDAREL relocs, we
5612 must instead allocate it in .sbss. */
5614 if (ppc_elf_hash_entry (h)->has_sda_refs)
5618 BFD_ASSERT (s != NULL);
5620 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5621 copy the initial value out of the dynamic object and into the
5622 runtime process image. We need to remember the offset into the
5623 .rela.bss section we are going to use. */
5624 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5628 if (ppc_elf_hash_entry (h)->has_sda_refs)
5629 srel = htab->relsbss;
5631 srel = htab->relbss;
5632 BFD_ASSERT (srel != NULL);
5633 srel->size += sizeof (Elf32_External_Rela);
5637 return _bfd_elf_adjust_dynamic_copy (h, s);
5640 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5641 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5642 specifying the addend on the plt relocation. For -fpic code, the sym
5643 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5644 xxxxxxxx.got2.plt_pic32.<callee>. */
5647 add_stub_sym (struct plt_entry *ent,
5648 struct elf_link_hash_entry *h,
5649 struct bfd_link_info *info)
5651 struct elf_link_hash_entry *sh;
5652 size_t len1, len2, len3;
5655 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5658 stub = ".plt_pic32.";
5660 stub = ".plt_call32.";
5662 len1 = strlen (h->root.root.string);
5663 len2 = strlen (stub);
5666 len3 = strlen (ent->sec->name);
5667 name = bfd_malloc (len1 + len2 + len3 + 9);
5670 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5672 memcpy (name + 8, ent->sec->name, len3);
5673 memcpy (name + 8 + len3, stub, len2);
5674 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5675 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5678 if (sh->root.type == bfd_link_hash_new)
5680 sh->root.type = bfd_link_hash_defined;
5681 sh->root.u.def.section = htab->glink;
5682 sh->root.u.def.value = ent->glink_offset;
5683 sh->ref_regular = 1;
5684 sh->def_regular = 1;
5685 sh->ref_regular_nonweak = 1;
5686 sh->forced_local = 1;
5692 /* Allocate NEED contiguous space in .got, and return the offset.
5693 Handles allocation of the got header when crossing 32k. */
5696 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5699 unsigned int max_before_header;
5701 if (htab->plt_type == PLT_VXWORKS)
5703 where = htab->got->size;
5704 htab->got->size += need;
5708 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5709 if (need <= htab->got_gap)
5711 where = max_before_header - htab->got_gap;
5712 htab->got_gap -= need;
5716 if (htab->got->size + need > max_before_header
5717 && htab->got->size <= max_before_header)
5719 htab->got_gap = max_before_header - htab->got->size;
5720 htab->got->size = max_before_header + htab->got_header_size;
5722 where = htab->got->size;
5723 htab->got->size += need;
5729 /* Allocate space in associated reloc sections for dynamic relocs. */
5732 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5734 struct bfd_link_info *info = inf;
5735 struct ppc_elf_link_hash_entry *eh;
5736 struct ppc_elf_link_hash_table *htab;
5737 struct elf_dyn_relocs *p;
5739 if (h->root.type == bfd_link_hash_indirect)
5742 htab = ppc_elf_hash_table (info);
5743 if (htab->elf.dynamic_sections_created
5744 || h->type == STT_GNU_IFUNC)
5746 struct plt_entry *ent;
5747 bfd_boolean doneone = FALSE;
5748 bfd_vma plt_offset = 0, glink_offset = 0;
5751 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5752 if (ent->plt.refcount > 0)
5754 /* Make sure this symbol is output as a dynamic symbol. */
5755 if (h->dynindx == -1
5758 && htab->elf.dynamic_sections_created)
5760 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5764 dyn = htab->elf.dynamic_sections_created;
5766 || h->type == STT_GNU_IFUNC
5767 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5769 asection *s = htab->plt;
5770 if (!dyn || h->dynindx == -1)
5773 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5777 plt_offset = s->size;
5780 ent->plt.offset = plt_offset;
5783 if (!doneone || info->shared)
5785 glink_offset = s->size;
5786 s->size += GLINK_ENTRY_SIZE;
5787 if (h == htab->tls_get_addr
5788 && !htab->params->no_tls_get_addr_opt)
5789 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5796 h->root.u.def.section = s;
5797 h->root.u.def.value = glink_offset;
5799 ent->glink_offset = glink_offset;
5801 if (htab->params->emit_stub_syms
5802 && !add_stub_sym (ent, h, info))
5809 /* If this is the first .plt entry, make room
5810 for the special first entry. */
5812 s->size += htab->plt_initial_entry_size;
5814 /* The PowerPC PLT is actually composed of two
5815 parts, the first part is 2 words (for a load
5816 and a jump), and then there is a remaining
5817 word available at the end. */
5818 plt_offset = (htab->plt_initial_entry_size
5819 + (htab->plt_slot_size
5821 - htab->plt_initial_entry_size)
5822 / htab->plt_entry_size)));
5824 /* If this symbol is not defined in a regular
5825 file, and we are not generating a shared
5826 library, then set the symbol to this location
5827 in the .plt. This is to avoid text
5828 relocations, and is required to make
5829 function pointers compare as equal between
5830 the normal executable and the shared library. */
5835 h->root.u.def.section = s;
5836 h->root.u.def.value = plt_offset;
5839 /* Make room for this entry. */
5840 s->size += htab->plt_entry_size;
5841 /* After the 8192nd entry, room for two entries
5843 if (htab->plt_type == PLT_OLD
5844 && (s->size - htab->plt_initial_entry_size)
5845 / htab->plt_entry_size
5846 > PLT_NUM_SINGLE_ENTRIES)
5847 s->size += htab->plt_entry_size;
5849 ent->plt.offset = plt_offset;
5852 /* We also need to make an entry in the .rela.plt section. */
5855 if (!htab->elf.dynamic_sections_created
5856 || h->dynindx == -1)
5857 htab->reliplt->size += sizeof (Elf32_External_Rela);
5860 htab->relplt->size += sizeof (Elf32_External_Rela);
5862 if (htab->plt_type == PLT_VXWORKS)
5864 /* Allocate space for the unloaded relocations. */
5866 && htab->elf.dynamic_sections_created)
5869 == (bfd_vma) htab->plt_initial_entry_size)
5871 htab->srelplt2->size
5872 += (sizeof (Elf32_External_Rela)
5873 * VXWORKS_PLTRESOLVE_RELOCS);
5876 htab->srelplt2->size
5877 += (sizeof (Elf32_External_Rela)
5878 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5881 /* Every PLT entry has an associated GOT entry in
5883 htab->sgotplt->size += 4;
5890 ent->plt.offset = (bfd_vma) -1;
5893 ent->plt.offset = (bfd_vma) -1;
5897 h->plt.plist = NULL;
5903 h->plt.plist = NULL;
5907 eh = (struct ppc_elf_link_hash_entry *) h;
5908 if (eh->elf.got.refcount > 0)
5913 /* Make sure this symbol is output as a dynamic symbol. */
5914 if (eh->elf.dynindx == -1
5915 && !eh->elf.forced_local
5916 && eh->elf.type != STT_GNU_IFUNC
5917 && htab->elf.dynamic_sections_created)
5919 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5924 if ((eh->tls_mask & TLS_TLS) != 0)
5926 if ((eh->tls_mask & TLS_LD) != 0)
5928 if (!eh->elf.def_dynamic)
5929 /* We'll just use htab->tlsld_got.offset. This should
5930 always be the case. It's a little odd if we have
5931 a local dynamic reloc against a non-local symbol. */
5932 htab->tlsld_got.refcount += 1;
5936 if ((eh->tls_mask & TLS_GD) != 0)
5938 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5940 if ((eh->tls_mask & TLS_DTPREL) != 0)
5946 eh->elf.got.offset = (bfd_vma) -1;
5949 eh->elf.got.offset = allocate_got (htab, need);
5950 dyn = htab->elf.dynamic_sections_created;
5952 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5953 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5954 || eh->elf.root.type != bfd_link_hash_undefweak))
5956 asection *rsec = htab->relgot;
5958 if (eh->elf.type == STT_GNU_IFUNC)
5959 rsec = htab->reliplt;
5960 /* All the entries we allocated need relocs.
5961 Except LD only needs one. */
5962 if ((eh->tls_mask & TLS_LD) != 0
5963 && eh->elf.def_dynamic)
5965 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5970 eh->elf.got.offset = (bfd_vma) -1;
5972 if (eh->dyn_relocs == NULL
5973 || !htab->elf.dynamic_sections_created)
5976 /* In the shared -Bsymbolic case, discard space allocated for
5977 dynamic pc-relative relocs against symbols which turn out to be
5978 defined in regular objects. For the normal shared case, discard
5979 space for relocs that have become local due to symbol visibility
5984 /* Relocs that use pc_count are those that appear on a call insn,
5985 or certain REL relocs (see must_be_dyn_reloc) that can be
5986 generated via assembly. We want calls to protected symbols to
5987 resolve directly to the function rather than going via the plt.
5988 If people want function pointer comparisons to work as expected
5989 then they should avoid writing weird assembly. */
5990 if (SYMBOL_CALLS_LOCAL (info, h))
5992 struct elf_dyn_relocs **pp;
5994 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5996 p->count -= p->pc_count;
6005 if (htab->is_vxworks)
6007 struct elf_dyn_relocs **pp;
6009 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6011 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6018 /* Discard relocs on undefined symbols that must be local. */
6019 if (eh->dyn_relocs != NULL
6020 && h->root.type == bfd_link_hash_undefined
6021 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6022 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6023 eh->dyn_relocs = NULL;
6025 /* Also discard relocs on undefined weak syms with non-default
6027 if (eh->dyn_relocs != NULL
6028 && h->root.type == bfd_link_hash_undefweak)
6030 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6031 eh->dyn_relocs = NULL;
6033 /* Make sure undefined weak symbols are output as a dynamic
6035 else if (h->dynindx == -1
6039 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6044 else if (ELIMINATE_COPY_RELOCS)
6046 /* For the non-shared case, discard space for relocs against
6047 symbols which turn out to need copy relocs or are not
6053 /* Make sure this symbol is output as a dynamic symbol.
6054 Undefined weak syms won't yet be marked as dynamic. */
6055 if (h->dynindx == -1
6056 && !h->forced_local)
6058 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6062 /* If that succeeded, we know we'll be keeping all the
6064 if (h->dynindx != -1)
6068 eh->dyn_relocs = NULL;
6073 /* Finally, allocate space. */
6074 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6076 asection *sreloc = elf_section_data (p->sec)->sreloc;
6077 if (eh->elf.type == STT_GNU_IFUNC)
6078 sreloc = htab->reliplt;
6079 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6085 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6086 read-only sections. */
6089 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6091 if (h->root.type == bfd_link_hash_indirect)
6094 if (readonly_dynrelocs (h))
6096 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6098 /* Not an error, just cut short the traversal. */
6104 static const unsigned char glink_eh_frame_cie[] =
6106 0, 0, 0, 16, /* length. */
6107 0, 0, 0, 0, /* id. */
6108 1, /* CIE version. */
6109 'z', 'R', 0, /* Augmentation string. */
6110 4, /* Code alignment. */
6111 0x7c, /* Data alignment. */
6113 1, /* Augmentation size. */
6114 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6115 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6118 /* Set the sizes of the dynamic sections. */
6121 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
6122 struct bfd_link_info *info)
6124 struct ppc_elf_link_hash_table *htab;
6130 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6133 htab = ppc_elf_hash_table (info);
6134 BFD_ASSERT (htab->elf.dynobj != NULL);
6136 if (elf_hash_table (info)->dynamic_sections_created)
6138 /* Set the contents of the .interp section to the interpreter. */
6139 if (info->executable)
6141 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6142 BFD_ASSERT (s != NULL);
6143 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6144 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6148 if (htab->plt_type == PLT_OLD)
6149 htab->got_header_size = 16;
6150 else if (htab->plt_type == PLT_NEW)
6151 htab->got_header_size = 12;
6153 /* Set up .got offsets for local syms, and space for local dynamic
6155 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6157 bfd_signed_vma *local_got;
6158 bfd_signed_vma *end_local_got;
6159 struct plt_entry **local_plt;
6160 struct plt_entry **end_local_plt;
6162 bfd_size_type locsymcount;
6163 Elf_Internal_Shdr *symtab_hdr;
6165 if (!is_ppc_elf (ibfd))
6168 for (s = ibfd->sections; s != NULL; s = s->next)
6170 struct ppc_dyn_relocs *p;
6172 for (p = ((struct ppc_dyn_relocs *)
6173 elf_section_data (s)->local_dynrel);
6177 if (!bfd_is_abs_section (p->sec)
6178 && bfd_is_abs_section (p->sec->output_section))
6180 /* Input section has been discarded, either because
6181 it is a copy of a linkonce section or due to
6182 linker script /DISCARD/, so we'll be discarding
6185 else if (htab->is_vxworks
6186 && strcmp (p->sec->output_section->name,
6189 /* Relocations in vxworks .tls_vars sections are
6190 handled specially by the loader. */
6192 else if (p->count != 0)
6194 asection *sreloc = elf_section_data (p->sec)->sreloc;
6196 sreloc = htab->reliplt;
6197 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6198 if ((p->sec->output_section->flags
6199 & (SEC_READONLY | SEC_ALLOC))
6200 == (SEC_READONLY | SEC_ALLOC))
6201 info->flags |= DF_TEXTREL;
6206 local_got = elf_local_got_refcounts (ibfd);
6210 symtab_hdr = &elf_symtab_hdr (ibfd);
6211 locsymcount = symtab_hdr->sh_info;
6212 end_local_got = local_got + locsymcount;
6213 local_plt = (struct plt_entry **) end_local_got;
6214 end_local_plt = local_plt + locsymcount;
6215 lgot_masks = (char *) end_local_plt;
6217 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6220 unsigned int need = 0;
6221 if ((*lgot_masks & TLS_TLS) != 0)
6223 if ((*lgot_masks & TLS_GD) != 0)
6225 if ((*lgot_masks & TLS_LD) != 0)
6226 htab->tlsld_got.refcount += 1;
6227 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6229 if ((*lgot_masks & TLS_DTPREL) != 0)
6235 *local_got = (bfd_vma) -1;
6238 *local_got = allocate_got (htab, need);
6241 asection *srel = htab->relgot;
6242 if ((*lgot_masks & PLT_IFUNC) != 0)
6243 srel = htab->reliplt;
6244 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6249 *local_got = (bfd_vma) -1;
6251 if (htab->is_vxworks)
6254 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6255 for (; local_plt < end_local_plt; ++local_plt)
6257 struct plt_entry *ent;
6258 bfd_boolean doneone = FALSE;
6259 bfd_vma plt_offset = 0, glink_offset = 0;
6261 for (ent = *local_plt; ent != NULL; ent = ent->next)
6262 if (ent->plt.refcount > 0)
6268 plt_offset = s->size;
6271 ent->plt.offset = plt_offset;
6274 if (!doneone || info->shared)
6276 glink_offset = s->size;
6277 s->size += GLINK_ENTRY_SIZE;
6279 ent->glink_offset = glink_offset;
6283 htab->reliplt->size += sizeof (Elf32_External_Rela);
6288 ent->plt.offset = (bfd_vma) -1;
6292 /* Allocate space for global sym dynamic relocs. */
6293 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6295 if (htab->tlsld_got.refcount > 0)
6297 htab->tlsld_got.offset = allocate_got (htab, 8);
6299 htab->relgot->size += sizeof (Elf32_External_Rela);
6302 htab->tlsld_got.offset = (bfd_vma) -1;
6304 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6306 unsigned int g_o_t = 32768;
6308 /* If we haven't allocated the header, do so now. When we get here,
6309 for old plt/got the got size will be 0 to 32764 (not allocated),
6310 or 32780 to 65536 (header allocated). For new plt/got, the
6311 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6312 if (htab->got->size <= 32768)
6314 g_o_t = htab->got->size;
6315 if (htab->plt_type == PLT_OLD)
6317 htab->got->size += htab->got_header_size;
6320 htab->elf.hgot->root.u.def.value = g_o_t;
6324 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6326 && !(sda->root.type == bfd_link_hash_defined
6327 || sda->root.type == bfd_link_hash_defweak))
6329 sda->root.type = bfd_link_hash_defined;
6330 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6331 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6335 if (htab->glink != NULL
6336 && htab->glink->size != 0
6337 && htab->elf.dynamic_sections_created)
6339 htab->glink_pltresolve = htab->glink->size;
6340 /* Space for the branch table. */
6341 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6342 /* Pad out to align the start of PLTresolve. */
6343 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6345 htab->glink->size += GLINK_PLTRESOLVE;
6347 if (htab->params->emit_stub_syms)
6349 struct elf_link_hash_entry *sh;
6350 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6351 TRUE, FALSE, FALSE);
6354 if (sh->root.type == bfd_link_hash_new)
6356 sh->root.type = bfd_link_hash_defined;
6357 sh->root.u.def.section = htab->glink;
6358 sh->root.u.def.value = htab->glink_pltresolve;
6359 sh->ref_regular = 1;
6360 sh->def_regular = 1;
6361 sh->ref_regular_nonweak = 1;
6362 sh->forced_local = 1;
6365 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6366 TRUE, FALSE, FALSE);
6369 if (sh->root.type == bfd_link_hash_new)
6371 sh->root.type = bfd_link_hash_defined;
6372 sh->root.u.def.section = htab->glink;
6373 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6374 sh->ref_regular = 1;
6375 sh->def_regular = 1;
6376 sh->ref_regular_nonweak = 1;
6377 sh->forced_local = 1;
6383 if (htab->glink != NULL
6384 && htab->glink->size != 0
6385 && htab->glink_eh_frame != NULL
6386 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6387 && _bfd_elf_eh_frame_present (info))
6389 s = htab->glink_eh_frame;
6390 s->size = sizeof (glink_eh_frame_cie) + 20;
6394 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6399 /* We've now determined the sizes of the various dynamic sections.
6400 Allocate memory for them. */
6402 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6404 bfd_boolean strip_section = TRUE;
6406 if ((s->flags & SEC_LINKER_CREATED) == 0)
6412 /* We'd like to strip these sections if they aren't needed, but if
6413 we've exported dynamic symbols from them we must leave them.
6414 It's too late to tell BFD to get rid of the symbols. */
6415 if (htab->elf.hplt != NULL)
6416 strip_section = FALSE;
6417 /* Strip this section if we don't need it; see the
6420 else if (s == htab->iplt
6422 || s == htab->glink_eh_frame
6423 || s == htab->sgotplt
6425 || s == htab->dynbss
6426 || s == htab->dynsbss
6427 || s == htab->sdata[0].section
6428 || s == htab->sdata[1].section)
6430 /* Strip these too. */
6432 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6437 /* Remember whether there are any relocation sections. */
6440 /* We use the reloc_count field as a counter if we need
6441 to copy relocs into the output file. */
6447 /* It's not one of our sections, so don't allocate space. */
6451 if (s->size == 0 && strip_section)
6453 /* If we don't need this section, strip it from the
6454 output file. This is mostly to handle .rela.bss and
6455 .rela.plt. We must create both sections in
6456 create_dynamic_sections, because they must be created
6457 before the linker maps input sections to output
6458 sections. The linker does that before
6459 adjust_dynamic_symbol is called, and it is that
6460 function which decides whether anything needs to go
6461 into these sections. */
6462 s->flags |= SEC_EXCLUDE;
6466 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6469 /* Allocate memory for the section contents. */
6470 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6471 if (s->contents == NULL)
6475 if (htab->elf.dynamic_sections_created)
6477 /* Add some entries to the .dynamic section. We fill in the
6478 values later, in ppc_elf_finish_dynamic_sections, but we
6479 must add the entries now so that we get the correct size for
6480 the .dynamic section. The DT_DEBUG entry is filled in by the
6481 dynamic linker and used by the debugger. */
6482 #define add_dynamic_entry(TAG, VAL) \
6483 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6485 if (info->executable)
6487 if (!add_dynamic_entry (DT_DEBUG, 0))
6491 if (htab->plt != NULL && htab->plt->size != 0)
6493 if (!add_dynamic_entry (DT_PLTGOT, 0)
6494 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6495 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6496 || !add_dynamic_entry (DT_JMPREL, 0))
6500 if (htab->plt_type == PLT_NEW
6501 && htab->glink != NULL
6502 && htab->glink->size != 0)
6504 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6506 if (!htab->params->no_tls_get_addr_opt
6507 && htab->tls_get_addr != NULL
6508 && htab->tls_get_addr->plt.plist != NULL
6509 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6515 if (!add_dynamic_entry (DT_RELA, 0)
6516 || !add_dynamic_entry (DT_RELASZ, 0)
6517 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6521 /* If any dynamic relocs apply to a read-only section, then we
6522 need a DT_TEXTREL entry. */
6523 if ((info->flags & DF_TEXTREL) == 0)
6524 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6527 if ((info->flags & DF_TEXTREL) != 0)
6529 if (!add_dynamic_entry (DT_TEXTREL, 0))
6532 if (htab->is_vxworks
6533 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6536 #undef add_dynamic_entry
6538 if (htab->glink_eh_frame != NULL
6539 && htab->glink_eh_frame->contents != NULL)
6541 unsigned char *p = htab->glink_eh_frame->contents;
6544 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6545 /* CIE length (rewrite in case little-endian). */
6546 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6547 p += sizeof (glink_eh_frame_cie);
6549 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6550 bfd_put_32 (htab->elf.dynobj, val, p);
6553 val = p - htab->glink_eh_frame->contents;
6554 bfd_put_32 (htab->elf.dynobj, val, p);
6556 /* Offset to .glink. Set later. */
6559 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6565 && htab->elf.dynamic_sections_created)
6567 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6569 *p++ = DW_CFA_advance_loc + adv;
6572 *p++ = DW_CFA_advance_loc1;
6575 else if (adv < 65536)
6577 *p++ = DW_CFA_advance_loc2;
6578 bfd_put_16 (htab->elf.dynobj, adv, p);
6583 *p++ = DW_CFA_advance_loc4;
6584 bfd_put_32 (htab->elf.dynobj, adv, p);
6587 *p++ = DW_CFA_register;
6590 *p++ = DW_CFA_advance_loc + 4;
6591 *p++ = DW_CFA_restore_extended;
6594 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6595 == htab->glink_eh_frame->size);
6601 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6604 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6606 if (h->plt.plist != NULL
6608 && (!h->pointer_equality_needed
6609 || !h->ref_regular_nonweak))
6612 return _bfd_elf_hash_symbol (h);
6615 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6617 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6618 used for some functions that are allowed to break the ABI). */
6619 static const int shared_stub_entry[] =
6621 0x7c0802a6, /* mflr 0 */
6622 0x429f0005, /* bcl 20, 31, .Lxxx */
6623 0x7d8802a6, /* mflr 12 */
6624 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6625 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6626 0x7c0803a6, /* mtlr 0 */
6627 0x7d8903a6, /* mtctr 12 */
6628 0x4e800420, /* bctr */
6631 static const int stub_entry[] =
6633 0x3d800000, /* lis 12,xxx@ha */
6634 0x398c0000, /* addi 12,12,xxx@l */
6635 0x7d8903a6, /* mtctr 12 */
6636 0x4e800420, /* bctr */
6639 struct ppc_elf_relax_info
6641 unsigned int workaround_size;
6644 /* This function implements long branch trampolines, and the ppc476
6645 icache bug workaround. Any section needing trampolines or patch
6646 space for the workaround has its size extended so that we can
6647 add trampolines at the end of the section. */
6650 ppc_elf_relax_section (bfd *abfd,
6652 struct bfd_link_info *link_info,
6657 struct one_fixup *next;
6659 /* Final link, can use the symbol offset. For a
6660 relocatable link we use the symbol's index. */
6665 Elf_Internal_Shdr *symtab_hdr;
6666 bfd_byte *contents = NULL;
6667 Elf_Internal_Sym *isymbuf = NULL;
6668 Elf_Internal_Rela *internal_relocs = NULL;
6669 Elf_Internal_Rela *irel, *irelend = NULL;
6670 struct one_fixup *fixups = NULL;
6671 struct ppc_elf_relax_info *relax_info = NULL;
6672 unsigned changes = 0;
6673 bfd_boolean workaround_change;
6674 struct ppc_elf_link_hash_table *htab;
6675 bfd_size_type trampbase, trampoff, newsize;
6677 bfd_boolean maybe_pasted;
6681 /* No need to do anything with non-alloc or non-code sections. */
6682 if ((isec->flags & SEC_ALLOC) == 0
6683 || (isec->flags & SEC_CODE) == 0
6684 || (isec->flags & SEC_LINKER_CREATED) != 0
6688 /* We cannot represent the required PIC relocs in the output, so don't
6689 do anything. The linker doesn't support mixing -shared and -r
6691 if (link_info->relocatable && link_info->shared)
6694 htab = ppc_elf_hash_table (link_info);
6698 isec->size = (isec->size + 3) & -4;
6699 if (isec->rawsize == 0)
6700 isec->rawsize = isec->size;
6701 trampbase = isec->size;
6703 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6704 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6705 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6707 if (htab->params->ppc476_workaround)
6709 if (elf_section_data (isec)->sec_info == NULL)
6711 elf_section_data (isec)->sec_info
6712 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6713 if (elf_section_data (isec)->sec_info == NULL)
6716 relax_info = elf_section_data (isec)->sec_info;
6717 trampbase -= relax_info->workaround_size;
6720 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6721 || strcmp (isec->output_section->name, ".fini") == 0);
6722 /* Space for a branch around any trampolines. */
6723 trampoff = trampbase;
6724 if (maybe_pasted && trampbase == isec->rawsize)
6727 symtab_hdr = &elf_symtab_hdr (abfd);
6729 if (htab->params->branch_trampolines)
6731 /* Get a copy of the native relocations. */
6732 if (isec->reloc_count != 0)
6734 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6735 link_info->keep_memory);
6736 if (internal_relocs == NULL)
6740 got2 = bfd_get_section_by_name (abfd, ".got2");
6742 irelend = internal_relocs + isec->reloc_count;
6743 for (irel = internal_relocs; irel < irelend; irel++)
6745 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6748 struct one_fixup *f;
6749 size_t insn_offset = 0;
6750 bfd_vma max_branch_offset, val;
6753 struct elf_link_hash_entry *h;
6754 struct plt_entry **plist;
6755 unsigned char sym_type;
6760 case R_PPC_LOCAL24PC:
6761 case R_PPC_PLTREL24:
6762 max_branch_offset = 1 << 25;
6766 case R_PPC_REL14_BRTAKEN:
6767 case R_PPC_REL14_BRNTAKEN:
6768 max_branch_offset = 1 << 15;
6775 /* Get the value of the symbol referred to by the reloc. */
6777 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6779 /* A local symbol. */
6780 Elf_Internal_Sym *isym;
6782 /* Read this BFD's local symbols. */
6783 if (isymbuf == NULL)
6785 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6786 if (isymbuf == NULL)
6787 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6788 symtab_hdr->sh_info, 0,
6793 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6794 if (isym->st_shndx == SHN_UNDEF)
6795 tsec = bfd_und_section_ptr;
6796 else if (isym->st_shndx == SHN_ABS)
6797 tsec = bfd_abs_section_ptr;
6798 else if (isym->st_shndx == SHN_COMMON)
6799 tsec = bfd_com_section_ptr;
6801 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6803 toff = isym->st_value;
6804 sym_type = ELF_ST_TYPE (isym->st_info);
6808 /* Global symbol handling. */
6811 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6812 h = elf_sym_hashes (abfd)[indx];
6814 while (h->root.type == bfd_link_hash_indirect
6815 || h->root.type == bfd_link_hash_warning)
6816 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6818 if (h->root.type == bfd_link_hash_defined
6819 || h->root.type == bfd_link_hash_defweak)
6821 tsec = h->root.u.def.section;
6822 toff = h->root.u.def.value;
6824 else if (h->root.type == bfd_link_hash_undefined
6825 || h->root.type == bfd_link_hash_undefweak)
6827 tsec = bfd_und_section_ptr;
6828 toff = link_info->relocatable ? indx : 0;
6833 /* If this branch is to __tls_get_addr then we may later
6834 optimise away the call. We won't be needing a long-
6835 branch stub in that case. */
6836 if (link_info->executable
6837 && !link_info->relocatable
6838 && h == htab->tls_get_addr
6839 && irel != internal_relocs)
6841 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6842 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6843 unsigned int tls_mask = 0;
6845 /* The previous reloc should be one of R_PPC_TLSGD or
6846 R_PPC_TLSLD, or for older object files, a reloc
6847 on the __tls_get_addr arg setup insn. Get tls
6848 mask bits from the symbol on that reloc. */
6849 if (t_symndx < symtab_hdr->sh_info)
6851 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6853 if (local_got_offsets != NULL)
6855 struct plt_entry **local_plt = (struct plt_entry **)
6856 (local_got_offsets + symtab_hdr->sh_info);
6857 char *lgot_masks = (char *)
6858 (local_plt + symtab_hdr->sh_info);
6859 tls_mask = lgot_masks[t_symndx];
6864 struct elf_link_hash_entry *th
6865 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6867 while (th->root.type == bfd_link_hash_indirect
6868 || th->root.type == bfd_link_hash_warning)
6869 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6872 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6875 /* The mask bits tell us if the call will be
6877 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6878 && (t_rtype == R_PPC_TLSGD
6879 || t_rtype == R_PPC_GOT_TLSGD16
6880 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6882 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6883 && (t_rtype == R_PPC_TLSLD
6884 || t_rtype == R_PPC_GOT_TLSLD16
6885 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6892 /* The condition here under which we call find_plt_ent must
6893 match that in relocate_section. If we call find_plt_ent here
6894 but not in relocate_section, or vice versa, then the branch
6895 destination used here may be incorrect. */
6899 /* We know is_branch_reloc (r_type) is true. */
6900 if (h->type == STT_GNU_IFUNC
6901 || r_type == R_PPC_PLTREL24)
6902 plist = &h->plt.plist;
6904 else if (sym_type == STT_GNU_IFUNC
6905 && elf_local_got_offsets (abfd) != NULL)
6907 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6908 struct plt_entry **local_plt = (struct plt_entry **)
6909 (local_got_offsets + symtab_hdr->sh_info);
6910 plist = local_plt + ELF32_R_SYM (irel->r_info);
6915 struct plt_entry *ent;
6917 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6918 addend = irel->r_addend;
6919 ent = find_plt_ent (plist, got2, addend);
6922 if (htab->plt_type == PLT_NEW
6924 || !htab->elf.dynamic_sections_created
6925 || h->dynindx == -1)
6928 toff = ent->glink_offset;
6933 toff = ent->plt.offset;
6938 /* If the branch and target are in the same section, you have
6939 no hope of adding stubs. We'll error out later should the
6944 /* There probably isn't any reason to handle symbols in
6945 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6946 attribute for a code section, and we are only looking at
6947 branches. However, implement it correctly here as a
6948 reference for other target relax_section functions. */
6949 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
6951 /* At this stage in linking, no SEC_MERGE symbol has been
6952 adjusted, so all references to such symbols need to be
6953 passed through _bfd_merged_section_offset. (Later, in
6954 relocate_section, all SEC_MERGE symbols *except* for
6955 section symbols have been adjusted.)
6957 gas may reduce relocations against symbols in SEC_MERGE
6958 sections to a relocation against the section symbol when
6959 the original addend was zero. When the reloc is against
6960 a section symbol we should include the addend in the
6961 offset passed to _bfd_merged_section_offset, since the
6962 location of interest is the original symbol. On the
6963 other hand, an access to "sym+addend" where "sym" is not
6964 a section symbol should not include the addend; Such an
6965 access is presumed to be an offset from "sym"; The
6966 location of interest is just "sym". */
6967 if (sym_type == STT_SECTION)
6968 toff += irel->r_addend;
6971 = _bfd_merged_section_offset (abfd, &tsec,
6972 elf_section_data (tsec)->sec_info,
6975 if (sym_type != STT_SECTION)
6976 toff += irel->r_addend;
6978 /* PLTREL24 addends are special. */
6979 else if (r_type != R_PPC_PLTREL24)
6980 toff += irel->r_addend;
6982 /* Attempted -shared link of non-pic code loses. */
6983 if ((!link_info->relocatable
6984 && tsec == bfd_und_section_ptr)
6985 || tsec->output_section == NULL
6986 || (tsec->owner != NULL
6987 && (tsec->owner->flags & BFD_PLUGIN) != 0))
6990 roff = irel->r_offset;
6992 /* If the branch is in range, no need to do anything. */
6993 if (tsec != bfd_und_section_ptr
6994 && (!link_info->relocatable
6995 /* A relocatable link may have sections moved during
6996 final link, so do not presume they remain in range. */
6997 || tsec->output_section == isec->output_section))
6999 bfd_vma symaddr, reladdr;
7001 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7002 reladdr = isec->output_section->vma + isec->output_offset + roff;
7003 if (symaddr - reladdr + max_branch_offset
7004 < 2 * max_branch_offset)
7008 /* Look for an existing fixup to this address. */
7009 for (f = fixups; f ; f = f->next)
7010 if (f->tsec == tsec && f->toff == toff)
7016 unsigned long stub_rtype;
7018 val = trampoff - roff;
7019 if (val >= max_branch_offset)
7020 /* Oh dear, we can't reach a trampoline. Don't try to add
7021 one. We'll report an error later. */
7024 if (link_info->shared)
7026 size = 4 * ARRAY_SIZE (shared_stub_entry);
7031 size = 4 * ARRAY_SIZE (stub_entry);
7034 stub_rtype = R_PPC_RELAX;
7035 if (tsec == htab->plt
7036 || tsec == htab->glink)
7038 stub_rtype = R_PPC_RELAX_PLT;
7039 if (r_type == R_PPC_PLTREL24)
7040 stub_rtype = R_PPC_RELAX_PLTREL24;
7043 /* Hijack the old relocation. Since we need two
7044 relocations for this use a "composite" reloc. */
7045 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7047 irel->r_offset = trampoff + insn_offset;
7048 if (r_type == R_PPC_PLTREL24
7049 && stub_rtype != R_PPC_RELAX_PLTREL24)
7052 /* Record the fixup so we don't do it again this section. */
7053 f = bfd_malloc (sizeof (*f));
7057 f->trampoff = trampoff;
7065 val = f->trampoff - roff;
7066 if (val >= max_branch_offset)
7069 /* Nop out the reloc, since we're finalizing things here. */
7070 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7073 /* Get the section contents. */
7074 if (contents == NULL)
7076 /* Get cached copy if it exists. */
7077 if (elf_section_data (isec)->this_hdr.contents != NULL)
7078 contents = elf_section_data (isec)->this_hdr.contents;
7079 /* Go get them off disk. */
7080 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7084 /* Fix up the existing branch to hit the trampoline. */
7085 hit_addr = contents + roff;
7089 case R_PPC_LOCAL24PC:
7090 case R_PPC_PLTREL24:
7091 t0 = bfd_get_32 (abfd, hit_addr);
7093 t0 |= val & 0x3fffffc;
7094 bfd_put_32 (abfd, t0, hit_addr);
7098 case R_PPC_REL14_BRTAKEN:
7099 case R_PPC_REL14_BRNTAKEN:
7100 t0 = bfd_get_32 (abfd, hit_addr);
7103 bfd_put_32 (abfd, t0, hit_addr);
7108 while (fixups != NULL)
7110 struct one_fixup *f = fixups;
7111 fixups = fixups->next;
7116 workaround_change = FALSE;
7118 if (htab->params->ppc476_workaround
7119 && (!link_info->relocatable
7120 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7122 bfd_vma addr, end_addr;
7123 unsigned int crossings;
7124 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7126 addr = isec->output_section->vma + isec->output_offset;
7127 end_addr = addr + trampoff - 1;
7129 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7132 /* Keep space aligned, to ensure the patch code itself does
7133 not cross a page. Don't decrease size calculated on a
7134 previous pass as otherwise we might never settle on a layout. */
7135 newsize = 15 - (end_addr & 15);
7136 newsize += crossings * 16;
7137 if (relax_info->workaround_size < newsize)
7139 relax_info->workaround_size = newsize;
7140 workaround_change = TRUE;
7142 /* Ensure relocate_section is called. */
7143 isec->flags |= SEC_RELOC;
7145 newsize = trampoff + relax_info->workaround_size;
7148 if (changes || workaround_change)
7149 isec->size = newsize;
7152 && symtab_hdr->contents != (unsigned char *) isymbuf)
7154 if (! link_info->keep_memory)
7158 /* Cache the symbols for elf_link_input_bfd. */
7159 symtab_hdr->contents = (unsigned char *) isymbuf;
7163 if (contents != NULL
7164 && elf_section_data (isec)->this_hdr.contents != contents)
7166 if (!changes && !link_info->keep_memory)
7170 /* Cache the section contents for elf_link_input_bfd. */
7171 elf_section_data (isec)->this_hdr.contents = contents;
7177 /* Append sufficient NOP relocs so we can write out relocation
7178 information for the trampolines. */
7179 Elf_Internal_Shdr *rel_hdr;
7180 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7181 * sizeof (*new_relocs));
7186 memcpy (new_relocs, internal_relocs,
7187 isec->reloc_count * sizeof (*new_relocs));
7188 for (ix = changes; ix--;)
7190 irel = new_relocs + ix + isec->reloc_count;
7192 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7194 if (internal_relocs != elf_section_data (isec)->relocs)
7195 free (internal_relocs);
7196 elf_section_data (isec)->relocs = new_relocs;
7197 isec->reloc_count += changes;
7198 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7199 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7201 else if (internal_relocs != NULL
7202 && elf_section_data (isec)->relocs != internal_relocs)
7203 free (internal_relocs);
7205 *again = changes != 0 || workaround_change;
7209 while (fixups != NULL)
7211 struct one_fixup *f = fixups;
7212 fixups = fixups->next;
7215 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7217 if (contents != NULL
7218 && elf_section_data (isec)->this_hdr.contents != contents)
7220 if (internal_relocs != NULL
7221 && elf_section_data (isec)->relocs != internal_relocs)
7222 free (internal_relocs);
7226 /* What to do when ld finds relocations against symbols defined in
7227 discarded sections. */
7230 ppc_elf_action_discarded (asection *sec)
7232 if (strcmp (".fixup", sec->name) == 0)
7235 if (strcmp (".got2", sec->name) == 0)
7238 return _bfd_elf_default_action_discarded (sec);
7241 /* Fill in the address for a pointer generated in a linker section. */
7244 elf_finish_pointer_linker_section (bfd *input_bfd,
7245 elf_linker_section_t *lsect,
7246 struct elf_link_hash_entry *h,
7248 const Elf_Internal_Rela *rel)
7250 elf_linker_section_pointers_t *linker_section_ptr;
7252 BFD_ASSERT (lsect != NULL);
7256 /* Handle global symbol. */
7257 struct ppc_elf_link_hash_entry *eh;
7259 eh = (struct ppc_elf_link_hash_entry *) h;
7260 BFD_ASSERT (eh->elf.def_regular);
7261 linker_section_ptr = eh->linker_section_pointer;
7265 /* Handle local symbol. */
7266 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7268 BFD_ASSERT (is_ppc_elf (input_bfd));
7269 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7270 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7273 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7276 BFD_ASSERT (linker_section_ptr != NULL);
7278 /* Offset will always be a multiple of four, so use the bottom bit
7279 as a "written" flag. */
7280 if ((linker_section_ptr->offset & 1) == 0)
7282 bfd_put_32 (lsect->section->owner,
7283 relocation + linker_section_ptr->addend,
7284 lsect->section->contents + linker_section_ptr->offset);
7285 linker_section_ptr->offset += 1;
7288 relocation = (lsect->section->output_section->vma
7289 + lsect->section->output_offset
7290 + linker_section_ptr->offset - 1
7291 - SYM_VAL (lsect->sym));
7295 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7296 lsect->name, (long) relocation, (long) relocation);
7302 #define PPC_LO(v) ((v) & 0xffff)
7303 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7304 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7307 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7308 struct bfd_link_info *info)
7310 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7311 bfd *output_bfd = info->output_bfd;
7314 plt = ((ent->plt.offset & ~1)
7315 + plt_sec->output_section->vma
7316 + plt_sec->output_offset);
7322 if (ent->addend >= 32768)
7324 + ent->sec->output_section->vma
7325 + ent->sec->output_offset);
7326 else if (htab->elf.hgot != NULL)
7327 got = SYM_VAL (htab->elf.hgot);
7331 if (plt + 0x8000 < 0x10000)
7333 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7335 bfd_put_32 (output_bfd, MTCTR_11, p);
7337 bfd_put_32 (output_bfd, BCTR, p);
7339 bfd_put_32 (output_bfd, NOP, p);
7344 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7346 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7348 bfd_put_32 (output_bfd, MTCTR_11, p);
7350 bfd_put_32 (output_bfd, BCTR, p);
7356 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7358 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7360 bfd_put_32 (output_bfd, MTCTR_11, p);
7362 bfd_put_32 (output_bfd, BCTR, p);
7367 /* Return true if symbol is defined statically. */
7370 is_static_defined (struct elf_link_hash_entry *h)
7372 return ((h->root.type == bfd_link_hash_defined
7373 || h->root.type == bfd_link_hash_defweak)
7374 && h->root.u.def.section != NULL
7375 && h->root.u.def.section->output_section != NULL);
7378 /* If INSN is an opcode that may be used with an @tls operand, return
7379 the transformed insn for TLS optimisation, otherwise return 0. If
7380 REG is non-zero only match an insn with RB or RA equal to REG. */
7383 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7387 if ((insn & (0x3f << 26)) != 31 << 26)
7390 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7391 rtra = insn & ((1 << 26) - (1 << 16));
7392 else if (((insn >> 16) & 0x1f) == reg)
7393 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7397 if ((insn & (0x3ff << 1)) == 266 << 1)
7400 else if ((insn & (0x1f << 1)) == 23 << 1
7401 && ((insn & (0x1f << 6)) < 14 << 6
7402 || ((insn & (0x1f << 6)) >= 16 << 6
7403 && (insn & (0x1f << 6)) < 24 << 6)))
7404 /* load and store indexed -> dform. */
7405 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7406 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7407 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7408 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7409 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7411 insn = (58 << 26) | 2;
7418 /* If INSN is an opcode that may be used with an @tprel operand, return
7419 the transformed insn for an undefined weak symbol, ie. with the
7420 thread pointer REG operand removed. Otherwise return 0. */
7423 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7425 if ((insn & (0x1f << 16)) == reg << 16
7426 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7427 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7428 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7429 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7430 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7431 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7432 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7433 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7434 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7435 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7436 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7437 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7438 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7439 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7440 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7441 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7443 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7444 && ((insn & 3) == 0 || (insn & 3) == 3))))
7446 insn &= ~(0x1f << 16);
7448 else if ((insn & (0x1f << 21)) == reg << 21
7449 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7450 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7451 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7453 insn &= ~(0x1f << 21);
7454 insn |= (insn & (0x1f << 16)) << 5;
7455 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7456 insn -= 2 >> 26; /* convert to ori,oris */
7464 is_insn_ds_form (unsigned int insn)
7466 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7467 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7468 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7469 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7473 is_insn_dq_form (unsigned int insn)
7475 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7478 /* The RELOCATE_SECTION function is called by the ELF backend linker
7479 to handle the relocations for a section.
7481 The relocs are always passed as Rela structures; if the section
7482 actually uses Rel structures, the r_addend field will always be
7485 This function is responsible for adjust the section contents as
7486 necessary, and (if using Rela relocs and generating a
7487 relocatable output file) adjusting the reloc addend as
7490 This function does not have to worry about setting the reloc
7491 address or the reloc symbol index.
7493 LOCAL_SYMS is a pointer to the swapped in local symbols.
7495 LOCAL_SECTIONS is an array giving the section in the input file
7496 corresponding to the st_shndx field of each local symbol.
7498 The global hash table entry for the global symbols can be found
7499 via elf_sym_hashes (input_bfd).
7501 When generating relocatable output, this function must handle
7502 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7503 going to be the section symbol corresponding to the output
7504 section, which means that the addend must be adjusted
7508 ppc_elf_relocate_section (bfd *output_bfd,
7509 struct bfd_link_info *info,
7511 asection *input_section,
7513 Elf_Internal_Rela *relocs,
7514 Elf_Internal_Sym *local_syms,
7515 asection **local_sections)
7517 Elf_Internal_Shdr *symtab_hdr;
7518 struct elf_link_hash_entry **sym_hashes;
7519 struct ppc_elf_link_hash_table *htab;
7520 Elf_Internal_Rela *rel;
7521 Elf_Internal_Rela *relend;
7522 Elf_Internal_Rela outrel;
7524 bfd_vma *local_got_offsets;
7525 bfd_boolean ret = TRUE;
7526 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7527 bfd_boolean is_vxworks_tls;
7530 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7531 "%ld relocations%s",
7532 input_bfd, input_section,
7533 (long) input_section->reloc_count,
7534 (info->relocatable) ? " (relocatable)" : "");
7537 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7539 /* Initialize howto table if not already done. */
7540 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7541 ppc_elf_howto_init ();
7543 htab = ppc_elf_hash_table (info);
7544 local_got_offsets = elf_local_got_offsets (input_bfd);
7545 symtab_hdr = &elf_symtab_hdr (input_bfd);
7546 sym_hashes = elf_sym_hashes (input_bfd);
7547 /* We have to handle relocations in vxworks .tls_vars sections
7548 specially, because the dynamic loader is 'weird'. */
7549 is_vxworks_tls = (htab->is_vxworks && info->shared
7550 && !strcmp (input_section->output_section->name,
7553 relend = relocs + input_section->reloc_count;
7554 for (; rel < relend; rel++)
7556 enum elf_ppc_reloc_type r_type;
7558 bfd_reloc_status_type r;
7559 Elf_Internal_Sym *sym;
7561 struct elf_link_hash_entry *h;
7562 const char *sym_name;
7563 reloc_howto_type *howto;
7564 unsigned long r_symndx;
7566 bfd_vma branch_bit, from;
7567 bfd_boolean unresolved_reloc;
7569 unsigned int tls_type, tls_mask, tls_gd;
7570 struct plt_entry **ifunc;
7571 struct reloc_howto_struct alt_howto;
7573 r_type = ELF32_R_TYPE (rel->r_info);
7577 unresolved_reloc = FALSE;
7579 r_symndx = ELF32_R_SYM (rel->r_info);
7581 if (r_symndx < symtab_hdr->sh_info)
7583 sym = local_syms + r_symndx;
7584 sec = local_sections[r_symndx];
7585 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7587 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7591 bfd_boolean ignored;
7593 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7594 r_symndx, symtab_hdr, sym_hashes,
7596 unresolved_reloc, warned, ignored);
7598 sym_name = h->root.root.string;
7601 if (sec != NULL && discarded_section (sec))
7603 /* For relocs against symbols from removed linkonce sections,
7604 or sections discarded by a linker script, we just want the
7605 section contents zeroed. Avoid any special processing. */
7607 if (r_type < R_PPC_max)
7608 howto = ppc_elf_howto_table[r_type];
7609 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
7610 rel, 1, relend, howto, 0, contents);
7613 if (info->relocatable)
7616 && r_type == R_PPC_PLTREL24
7617 && rel->r_addend != 0)
7619 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7620 addend specifies the GOT pointer offset within .got2. */
7621 rel->r_addend += got2->output_offset;
7623 if (r_type != R_PPC_RELAX_PLT
7624 && r_type != R_PPC_RELAX_PLTREL24
7625 && r_type != R_PPC_RELAX)
7629 /* TLS optimizations. Replace instruction sequences and relocs
7630 based on information we collected in tls_optimize. We edit
7631 RELOCS so that --emit-relocs will output something sensible
7632 for the final instruction stream. */
7636 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7637 else if (local_got_offsets != NULL)
7639 struct plt_entry **local_plt;
7642 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7643 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7644 tls_mask = lgot_masks[r_symndx];
7647 /* Ensure reloc mapping code below stays sane. */
7648 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7649 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7650 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7651 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7652 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7653 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7654 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7655 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7662 case R_PPC_GOT_TPREL16:
7663 case R_PPC_GOT_TPREL16_LO:
7664 if ((tls_mask & TLS_TLS) != 0
7665 && (tls_mask & TLS_TPREL) == 0)
7669 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7671 insn |= 0x3c020000; /* addis 0,2,0 */
7672 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7673 r_type = R_PPC_TPREL16_HA;
7674 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7679 if ((tls_mask & TLS_TLS) != 0
7680 && (tls_mask & TLS_TPREL) == 0)
7684 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7685 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7688 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7689 r_type = R_PPC_TPREL16_LO;
7690 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7692 /* Was PPC_TLS which sits on insn boundary, now
7693 PPC_TPREL16_LO which is at low-order half-word. */
7694 rel->r_offset += d_offset;
7698 case R_PPC_GOT_TLSGD16_HI:
7699 case R_PPC_GOT_TLSGD16_HA:
7700 tls_gd = TLS_TPRELGD;
7701 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7705 case R_PPC_GOT_TLSLD16_HI:
7706 case R_PPC_GOT_TLSLD16_HA:
7707 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7710 if ((tls_mask & tls_gd) != 0)
7711 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7712 + R_PPC_GOT_TPREL16);
7715 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7716 rel->r_offset -= d_offset;
7717 r_type = R_PPC_NONE;
7719 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7723 case R_PPC_GOT_TLSGD16:
7724 case R_PPC_GOT_TLSGD16_LO:
7725 tls_gd = TLS_TPRELGD;
7726 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7730 case R_PPC_GOT_TLSLD16:
7731 case R_PPC_GOT_TLSLD16_LO:
7732 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7734 unsigned int insn1, insn2;
7738 offset = (bfd_vma) -1;
7739 /* If not using the newer R_PPC_TLSGD/LD to mark
7740 __tls_get_addr calls, we must trust that the call
7741 stays with its arg setup insns, ie. that the next
7742 reloc is the __tls_get_addr call associated with
7743 the current reloc. Edit both insns. */
7744 if (input_section->has_tls_get_addr_call
7746 && branch_reloc_hash_match (input_bfd, rel + 1,
7747 htab->tls_get_addr))
7748 offset = rel[1].r_offset;
7749 if ((tls_mask & tls_gd) != 0)
7752 insn1 = bfd_get_32 (output_bfd,
7753 contents + rel->r_offset - d_offset);
7754 insn1 &= (1 << 26) - 1;
7755 insn1 |= 32 << 26; /* lwz */
7756 if (offset != (bfd_vma) -1)
7758 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7759 insn2 = 0x7c631214; /* add 3,3,2 */
7760 bfd_put_32 (output_bfd, insn2, contents + offset);
7762 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7763 + R_PPC_GOT_TPREL16);
7764 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7769 insn1 = 0x3c620000; /* addis 3,2,0 */
7772 /* Was an LD reloc. */
7774 r_symndx < symtab_hdr->sh_info;
7776 if (local_sections[r_symndx] == sec)
7778 if (r_symndx >= symtab_hdr->sh_info)
7779 r_symndx = STN_UNDEF;
7780 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7781 if (r_symndx != STN_UNDEF)
7782 rel->r_addend -= (local_syms[r_symndx].st_value
7783 + sec->output_offset
7784 + sec->output_section->vma);
7786 r_type = R_PPC_TPREL16_HA;
7787 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7788 if (offset != (bfd_vma) -1)
7790 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7791 rel[1].r_offset = offset + d_offset;
7792 rel[1].r_addend = rel->r_addend;
7793 insn2 = 0x38630000; /* addi 3,3,0 */
7794 bfd_put_32 (output_bfd, insn2, contents + offset);
7797 bfd_put_32 (output_bfd, insn1,
7798 contents + rel->r_offset - d_offset);
7801 /* We changed the symbol on an LD reloc. Start over
7802 in order to get h, sym, sec etc. right. */
7810 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7813 bfd_vma offset = rel->r_offset;
7815 if ((tls_mask & TLS_TPRELGD) != 0)
7818 r_type = R_PPC_NONE;
7819 insn2 = 0x7c631214; /* add 3,3,2 */
7824 r_type = R_PPC_TPREL16_LO;
7825 rel->r_offset += d_offset;
7826 insn2 = 0x38630000; /* addi 3,3,0 */
7828 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7829 bfd_put_32 (output_bfd, insn2, contents + offset);
7830 /* Zap the reloc on the _tls_get_addr call too. */
7831 BFD_ASSERT (offset == rel[1].r_offset);
7832 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7837 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7842 r_symndx < symtab_hdr->sh_info;
7844 if (local_sections[r_symndx] == sec)
7846 if (r_symndx >= symtab_hdr->sh_info)
7847 r_symndx = STN_UNDEF;
7848 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7849 if (r_symndx != STN_UNDEF)
7850 rel->r_addend -= (local_syms[r_symndx].st_value
7851 + sec->output_offset
7852 + sec->output_section->vma);
7854 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7855 rel->r_offset += d_offset;
7856 insn2 = 0x38630000; /* addi 3,3,0 */
7857 bfd_put_32 (output_bfd, insn2,
7858 contents + rel->r_offset - d_offset);
7859 /* Zap the reloc on the _tls_get_addr call too. */
7860 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7861 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7868 /* Handle other relocations that tweak non-addend part of insn. */
7875 /* Branch taken prediction relocations. */
7876 case R_PPC_ADDR14_BRTAKEN:
7877 case R_PPC_REL14_BRTAKEN:
7878 branch_bit = BRANCH_PREDICT_BIT;
7881 /* Branch not taken prediction relocations. */
7882 case R_PPC_ADDR14_BRNTAKEN:
7883 case R_PPC_REL14_BRNTAKEN:
7887 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7888 insn &= ~BRANCH_PREDICT_BIT;
7891 from = (rel->r_offset
7892 + input_section->output_offset
7893 + input_section->output_section->vma);
7895 /* Invert 'y' bit if not the default. */
7896 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7897 insn ^= BRANCH_PREDICT_BIT;
7899 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7905 if (!htab->is_vxworks)
7907 struct plt_entry *ent;
7911 if (h->type == STT_GNU_IFUNC)
7912 ifunc = &h->plt.plist;
7914 else if (local_got_offsets != NULL
7915 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7917 struct plt_entry **local_plt;
7919 local_plt = (struct plt_entry **) (local_got_offsets
7920 + symtab_hdr->sh_info);
7921 ifunc = local_plt + r_symndx;
7927 || is_branch_reloc (r_type)))
7930 if (r_type == R_PPC_PLTREL24 && info->shared)
7931 addend = rel->r_addend;
7932 ent = find_plt_ent (ifunc, got2, addend);
7936 if (h == NULL && (ent->plt.offset & 1) == 0)
7938 Elf_Internal_Rela rela;
7941 rela.r_offset = (htab->iplt->output_section->vma
7942 + htab->iplt->output_offset
7944 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7945 rela.r_addend = relocation;
7946 loc = htab->reliplt->contents;
7947 loc += (htab->reliplt->reloc_count++
7948 * sizeof (Elf32_External_Rela));
7949 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7951 ent->plt.offset |= 1;
7953 if (h == NULL && (ent->glink_offset & 1) == 0)
7955 unsigned char *p = ((unsigned char *) htab->glink->contents
7956 + ent->glink_offset);
7957 write_glink_stub (ent, htab->iplt, p, info);
7958 ent->glink_offset |= 1;
7961 unresolved_reloc = FALSE;
7962 if (htab->plt_type == PLT_NEW
7963 || !htab->elf.dynamic_sections_created
7965 || h->dynindx == -1)
7966 relocation = (htab->glink->output_section->vma
7967 + htab->glink->output_offset
7968 + (ent->glink_offset & ~1));
7970 relocation = (htab->plt->output_section->vma
7971 + htab->plt->output_offset
7976 addend = rel->r_addend;
7979 if (r_type < R_PPC_max)
7980 howto = ppc_elf_howto_table[r_type];
7984 info->callbacks->einfo
7985 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
7986 input_bfd, (int) r_type, sym_name);
7988 bfd_set_error (bfd_error_bad_value);
7996 case R_PPC_EMB_MRKREF:
7997 case R_PPC_GNU_VTINHERIT:
7998 case R_PPC_GNU_VTENTRY:
8001 /* GOT16 relocations. Like an ADDR16 using the symbol's
8002 address in the GOT as relocation value instead of the
8003 symbol's value itself. Also, create a GOT entry for the
8004 symbol and put the symbol value there. */
8005 case R_PPC_GOT_TLSGD16:
8006 case R_PPC_GOT_TLSGD16_LO:
8007 case R_PPC_GOT_TLSGD16_HI:
8008 case R_PPC_GOT_TLSGD16_HA:
8009 tls_type = TLS_TLS | TLS_GD;
8012 case R_PPC_GOT_TLSLD16:
8013 case R_PPC_GOT_TLSLD16_LO:
8014 case R_PPC_GOT_TLSLD16_HI:
8015 case R_PPC_GOT_TLSLD16_HA:
8016 tls_type = TLS_TLS | TLS_LD;
8019 case R_PPC_GOT_TPREL16:
8020 case R_PPC_GOT_TPREL16_LO:
8021 case R_PPC_GOT_TPREL16_HI:
8022 case R_PPC_GOT_TPREL16_HA:
8023 tls_type = TLS_TLS | TLS_TPREL;
8026 case R_PPC_GOT_DTPREL16:
8027 case R_PPC_GOT_DTPREL16_LO:
8028 case R_PPC_GOT_DTPREL16_HI:
8029 case R_PPC_GOT_DTPREL16_HA:
8030 tls_type = TLS_TLS | TLS_DTPREL;
8034 case R_PPC_GOT16_LO:
8035 case R_PPC_GOT16_HI:
8036 case R_PPC_GOT16_HA:
8040 /* Relocation is to the entry for this symbol in the global
8046 if (htab->got == NULL)
8050 if (tls_type == (TLS_TLS | TLS_LD)
8052 || !h->def_dynamic))
8053 offp = &htab->tlsld_got.offset;
8057 dyn = htab->elf.dynamic_sections_created;
8058 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8060 && SYMBOL_REFERENCES_LOCAL (info, h)))
8061 /* This is actually a static link, or it is a
8062 -Bsymbolic link and the symbol is defined
8063 locally, or the symbol was forced to be local
8064 because of a version file. */
8068 BFD_ASSERT (h->dynindx != -1);
8070 unresolved_reloc = FALSE;
8072 offp = &h->got.offset;
8076 if (local_got_offsets == NULL)
8078 offp = &local_got_offsets[r_symndx];
8081 /* The offset must always be a multiple of 4. We use the
8082 least significant bit to record whether we have already
8083 processed this entry. */
8089 unsigned int tls_m = (tls_mask
8090 & (TLS_LD | TLS_GD | TLS_DTPREL
8091 | TLS_TPREL | TLS_TPRELGD));
8093 if (offp == &htab->tlsld_got.offset)
8099 /* We might have multiple got entries for this sym.
8100 Initialize them all. */
8105 if ((tls_m & TLS_LD) != 0)
8107 tls_ty = TLS_TLS | TLS_LD;
8110 else if ((tls_m & TLS_GD) != 0)
8112 tls_ty = TLS_TLS | TLS_GD;
8115 else if ((tls_m & TLS_DTPREL) != 0)
8117 tls_ty = TLS_TLS | TLS_DTPREL;
8118 tls_m &= ~TLS_DTPREL;
8120 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8122 tls_ty = TLS_TLS | TLS_TPREL;
8126 /* Generate relocs for the dynamic linker. */
8127 if ((info->shared || indx != 0)
8128 && (offp == &htab->tlsld_got.offset
8130 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8131 || h->root.type != bfd_link_hash_undefweak))
8133 asection *rsec = htab->relgot;
8137 rsec = htab->reliplt;
8138 outrel.r_offset = (htab->got->output_section->vma
8139 + htab->got->output_offset
8141 outrel.r_addend = 0;
8142 if (tls_ty & (TLS_LD | TLS_GD))
8144 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8145 if (tls_ty == (TLS_TLS | TLS_GD))
8147 loc = rsec->contents;
8148 loc += (rsec->reloc_count++
8149 * sizeof (Elf32_External_Rela));
8150 bfd_elf32_swap_reloca_out (output_bfd,
8152 outrel.r_offset += 4;
8154 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8157 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8158 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8159 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8160 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8162 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8163 else if (ifunc != NULL)
8164 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8166 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8167 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8169 outrel.r_addend += relocation;
8170 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8171 outrel.r_addend -= htab->elf.tls_sec->vma;
8173 loc = rsec->contents;
8174 loc += (rsec->reloc_count++
8175 * sizeof (Elf32_External_Rela));
8176 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8179 /* Init the .got section contents if we're not
8180 emitting a reloc. */
8183 bfd_vma value = relocation;
8185 if (tls_ty == (TLS_TLS | TLS_LD))
8187 else if (tls_ty != 0)
8189 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8190 if (tls_ty == (TLS_TLS | TLS_TPREL))
8191 value += DTP_OFFSET - TP_OFFSET;
8193 if (tls_ty == (TLS_TLS | TLS_GD))
8195 bfd_put_32 (output_bfd, value,
8196 htab->got->contents + off + 4);
8200 bfd_put_32 (output_bfd, value,
8201 htab->got->contents + off);
8205 if (tls_ty & (TLS_LD | TLS_GD))
8214 if (off >= (bfd_vma) -2)
8217 if ((tls_type & TLS_TLS) != 0)
8219 if (tls_type != (TLS_TLS | TLS_LD))
8221 if ((tls_mask & TLS_LD) != 0
8223 || !h->def_dynamic))
8225 if (tls_type != (TLS_TLS | TLS_GD))
8227 if ((tls_mask & TLS_GD) != 0)
8229 if (tls_type != (TLS_TLS | TLS_DTPREL))
8231 if ((tls_mask & TLS_DTPREL) != 0)
8238 relocation = (htab->got->output_section->vma
8239 + htab->got->output_offset
8241 - SYM_VAL (htab->elf.hgot));
8243 /* Addends on got relocations don't make much sense.
8244 x+off@got is actually x@got+off, and since the got is
8245 generated by a hash table traversal, the value in the
8246 got at entry m+n bears little relation to the entry m. */
8248 info->callbacks->einfo
8249 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8250 input_bfd, input_section, rel->r_offset,
8256 /* Relocations that need no special processing. */
8257 case R_PPC_LOCAL24PC:
8258 /* It makes no sense to point a local relocation
8259 at a symbol not in this object. */
8260 if (unresolved_reloc)
8262 if (! (*info->callbacks->undefined_symbol) (info,
8263 h->root.root.string,
8273 case R_PPC_DTPREL16:
8274 case R_PPC_DTPREL16_LO:
8275 case R_PPC_DTPREL16_HI:
8276 case R_PPC_DTPREL16_HA:
8277 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8280 /* Relocations that may need to be propagated if this is a shared
8283 case R_PPC_TPREL16_LO:
8284 case R_PPC_TPREL16_HI:
8285 case R_PPC_TPREL16_HA:
8287 && h->root.type == bfd_link_hash_undefweak
8288 && h->dynindx == -1)
8290 /* Make this relocation against an undefined weak symbol
8291 resolve to zero. This is really just a tweak, since
8292 code using weak externs ought to check that they are
8293 defined before using them. */
8294 bfd_byte *p = contents + rel->r_offset - d_offset;
8295 unsigned int insn = bfd_get_32 (output_bfd, p);
8296 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8298 bfd_put_32 (output_bfd, insn, p);
8301 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8302 /* The TPREL16 relocs shouldn't really be used in shared
8303 libs as they will result in DT_TEXTREL being set, but
8304 support them anyway. */
8308 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8311 case R_PPC_DTPREL32:
8312 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8315 case R_PPC_DTPMOD32:
8321 case R_PPC_REL16_LO:
8322 case R_PPC_REL16_HI:
8323 case R_PPC_REL16_HA:
8327 if (h == NULL || h == htab->elf.hgot)
8333 case R_PPC_ADDR16_LO:
8334 case R_PPC_ADDR16_HI:
8335 case R_PPC_ADDR16_HA:
8340 case R_PPC_VLE_REL8:
8341 case R_PPC_VLE_REL15:
8342 case R_PPC_VLE_REL24:
8345 case R_PPC_REL14_BRTAKEN:
8346 case R_PPC_REL14_BRNTAKEN:
8347 /* If these relocations are not to a named symbol, they can be
8348 handled right here, no need to bother the dynamic linker. */
8349 if (SYMBOL_CALLS_LOCAL (info, h)
8350 || h == htab->elf.hgot)
8356 case R_PPC_ADDR14_BRTAKEN:
8357 case R_PPC_ADDR14_BRNTAKEN:
8358 if (h != NULL && !info->shared)
8363 if ((input_section->flags & SEC_ALLOC) == 0
8369 && ((h->root.type == bfd_link_hash_undefined
8370 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8371 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8372 || (h->root.type == bfd_link_hash_undefweak
8373 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8374 && (must_be_dyn_reloc (info, r_type)
8375 || !SYMBOL_CALLS_LOCAL (info, h)))
8376 || (ELIMINATE_COPY_RELOCS
8381 && !h->def_regular))
8387 fprintf (stderr, "ppc_elf_relocate_section needs to "
8388 "create relocation for %s\n",
8389 (h && h->root.root.string
8390 ? h->root.root.string : "<unknown>"));
8393 /* When generating a shared object, these relocations
8394 are copied into the output file to be resolved at run
8396 sreloc = elf_section_data (input_section)->sreloc;
8398 sreloc = htab->reliplt;
8403 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8406 if (outrel.r_offset == (bfd_vma) -1
8407 || outrel.r_offset == (bfd_vma) -2)
8408 skip = (int) outrel.r_offset;
8409 outrel.r_offset += (input_section->output_section->vma
8410 + input_section->output_offset);
8413 memset (&outrel, 0, sizeof outrel);
8415 && (h->root.type == bfd_link_hash_undefined
8416 || h->root.type == bfd_link_hash_undefweak))
8417 || !SYMBOL_REFERENCES_LOCAL (info, h))
8419 BFD_ASSERT (h->dynindx != -1);
8420 unresolved_reloc = FALSE;
8421 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8422 outrel.r_addend = rel->r_addend;
8426 outrel.r_addend = relocation + rel->r_addend;
8428 if (r_type != R_PPC_ADDR32)
8434 /* If we get here when building a static
8435 executable, then the libc startup function
8436 responsible for applying indirect function
8437 relocations is going to complain about
8439 If we get here when building a dynamic
8440 executable, it will be because we have
8441 a text relocation. The dynamic loader
8442 will set the text segment writable and
8443 non-executable to apply text relocations.
8444 So we'll segfault when trying to run the
8445 indirection function to resolve the reloc. */
8446 info->callbacks->einfo
8447 (_("%P: %H: relocation %s for indirect "
8448 "function %s unsupported\n"),
8449 input_bfd, input_section, rel->r_offset,
8454 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8456 else if (sec == NULL || sec->owner == NULL)
8458 bfd_set_error (bfd_error_bad_value);
8465 /* We are turning this relocation into one
8466 against a section symbol. It would be
8467 proper to subtract the symbol's value,
8468 osec->vma, from the emitted reloc addend,
8469 but ld.so expects buggy relocs.
8470 FIXME: Why not always use a zero index? */
8471 osec = sec->output_section;
8472 indx = elf_section_data (osec)->dynindx;
8475 osec = htab->elf.text_index_section;
8476 indx = elf_section_data (osec)->dynindx;
8478 BFD_ASSERT (indx != 0);
8481 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8482 indx, osec->name, osec->flags,
8483 h->root.root.string);
8487 outrel.r_info = ELF32_R_INFO (indx, r_type);
8489 else if (ifunc != NULL)
8490 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8492 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8495 loc = sreloc->contents;
8496 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8497 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8502 /* This reloc will be computed at runtime. We clear the memory
8503 so that it contains predictable value. */
8505 && ((input_section->flags & SEC_ALLOC) != 0
8506 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8508 relocation = howto->pc_relative ? outrel.r_offset : 0;
8515 case R_PPC_RELAX_PLT:
8516 case R_PPC_RELAX_PLTREL24:
8519 struct plt_entry *ent;
8520 bfd_vma got2_addend = 0;
8522 if (r_type == R_PPC_RELAX_PLTREL24)
8525 got2_addend = addend;
8528 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8529 if (htab->plt_type == PLT_NEW)
8530 relocation = (htab->glink->output_section->vma
8531 + htab->glink->output_offset
8532 + ent->glink_offset);
8534 relocation = (htab->plt->output_section->vma
8535 + htab->plt->output_offset
8544 size_t insn_offset = rel->r_offset;
8549 relocation -= (input_section->output_section->vma
8550 + input_section->output_offset
8551 + rel->r_offset - 4);
8552 stub = shared_stub_entry;
8553 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8554 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8555 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8557 size = ARRAY_SIZE (shared_stub_entry) - 3;
8562 size = ARRAY_SIZE (stub_entry);
8565 relocation += addend;
8566 if (info->relocatable)
8569 /* First insn is HA, second is LO. */
8571 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8572 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8576 insn |= relocation & 0xffff;
8577 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8585 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8589 /* Rewrite the reloc and convert one of the trailing nop
8590 relocs to describe this relocation. */
8591 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8592 /* The relocs are at the bottom 2 bytes */
8593 rel[0].r_offset += d_offset;
8594 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8595 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8596 rel[1].r_offset += 4;
8597 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8602 /* Indirect .sdata relocation. */
8603 case R_PPC_EMB_SDAI16:
8604 BFD_ASSERT (htab->sdata[0].section != NULL);
8605 if (!is_static_defined (htab->sdata[0].sym))
8607 unresolved_reloc = TRUE;
8611 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8612 h, relocation, rel);
8616 /* Indirect .sdata2 relocation. */
8617 case R_PPC_EMB_SDA2I16:
8618 BFD_ASSERT (htab->sdata[1].section != NULL);
8619 if (!is_static_defined (htab->sdata[1].sym))
8621 unresolved_reloc = TRUE;
8625 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8626 h, relocation, rel);
8630 /* Handle the TOC16 reloc. We want to use the offset within the .got
8631 section, not the actual VMA. This is appropriate when generating
8632 an embedded ELF object, for which the .got section acts like the
8633 AIX .toc section. */
8634 case R_PPC_TOC16: /* phony GOT16 relocations */
8635 if (sec == NULL || sec->output_section == NULL)
8637 unresolved_reloc = TRUE;
8640 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8642 || strcmp (bfd_get_section_name (sec->owner, sec),
8645 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8648 case R_PPC_PLTREL24:
8649 if (h != NULL && ifunc == NULL)
8651 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8652 info->shared ? addend : 0);
8654 || htab->plt == NULL)
8656 /* We didn't make a PLT entry for this symbol. This
8657 happens when statically linking PIC code, or when
8658 using -Bsymbolic. */
8662 /* Relocation is to the entry for this symbol in the
8663 procedure linkage table. */
8664 unresolved_reloc = FALSE;
8665 if (htab->plt_type == PLT_NEW)
8666 relocation = (htab->glink->output_section->vma
8667 + htab->glink->output_offset
8668 + ent->glink_offset);
8670 relocation = (htab->plt->output_section->vma
8671 + htab->plt->output_offset
8676 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8677 addend specifies the GOT pointer offset within .got2.
8678 Don't apply it to the relocation field. */
8682 /* Relocate against _SDA_BASE_. */
8683 case R_PPC_SDAREL16:
8686 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8689 || sec->output_section == NULL
8690 || !is_static_defined (sda))
8692 unresolved_reloc = TRUE;
8695 addend -= SYM_VAL (sda);
8697 name = bfd_get_section_name (output_bfd, sec->output_section);
8698 if (! ((CONST_STRNEQ (name, ".sdata")
8699 && (name[6] == 0 || name[6] == '.'))
8700 || (CONST_STRNEQ (name, ".sbss")
8701 && (name[5] == 0 || name[5] == '.'))))
8703 info->callbacks->einfo
8704 (_("%P: %B: the target (%s) of a %s relocation is "
8705 "in the wrong output section (%s)\n"),
8714 /* Relocate against _SDA2_BASE_. */
8715 case R_PPC_EMB_SDA2REL:
8718 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8721 || sec->output_section == NULL
8722 || !is_static_defined (sda))
8724 unresolved_reloc = TRUE;
8727 addend -= SYM_VAL (sda);
8729 name = bfd_get_section_name (output_bfd, sec->output_section);
8730 if (! (CONST_STRNEQ (name, ".sdata2")
8731 || CONST_STRNEQ (name, ".sbss2")))
8733 info->callbacks->einfo
8734 (_("%P: %B: the target (%s) of a %s relocation is "
8735 "in the wrong output section (%s)\n"),
8744 case R_PPC_VLE_LO16A:
8745 relocation = relocation + addend;
8746 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8747 relocation, split16a_type);
8750 case R_PPC_VLE_LO16D:
8751 relocation = relocation + addend;
8752 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8753 relocation, split16d_type);
8756 case R_PPC_VLE_HI16A:
8757 relocation = (relocation + addend) >> 16;
8758 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8759 relocation, split16a_type);
8762 case R_PPC_VLE_HI16D:
8763 relocation = (relocation + addend) >> 16;
8764 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8765 relocation, split16d_type);
8768 case R_PPC_VLE_HA16A:
8769 relocation = (relocation + addend + 0x8000) >> 16;
8770 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8771 relocation, split16a_type);
8774 case R_PPC_VLE_HA16D:
8775 relocation = (relocation + addend + 0x8000) >> 16;
8776 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8777 relocation, split16d_type);
8780 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8781 case R_PPC_EMB_SDA21:
8782 case R_PPC_VLE_SDA21:
8783 case R_PPC_EMB_RELSDA:
8784 case R_PPC_VLE_SDA21_LO:
8789 struct elf_link_hash_entry *sda = NULL;
8791 if (sec == NULL || sec->output_section == NULL)
8793 unresolved_reloc = TRUE;
8797 name = bfd_get_section_name (output_bfd, sec->output_section);
8798 if (((CONST_STRNEQ (name, ".sdata")
8799 && (name[6] == 0 || name[6] == '.'))
8800 || (CONST_STRNEQ (name, ".sbss")
8801 && (name[5] == 0 || name[5] == '.'))))
8804 sda = htab->sdata[0].sym;
8806 else if (CONST_STRNEQ (name, ".sdata2")
8807 || CONST_STRNEQ (name, ".sbss2"))
8810 sda = htab->sdata[1].sym;
8812 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8813 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8819 info->callbacks->einfo
8820 (_("%P: %B: the target (%s) of a %s relocation is "
8821 "in the wrong output section (%s)\n"),
8827 bfd_set_error (bfd_error_bad_value);
8834 if (!is_static_defined (sda))
8836 unresolved_reloc = TRUE;
8839 addend -= SYM_VAL (sda);
8842 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8844 && (r_type == R_PPC_VLE_SDA21
8845 || r_type == R_PPC_VLE_SDA21_LO))
8847 relocation = relocation + addend;
8850 /* Force e_li insn, keeping RT from original insn. */
8854 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
8855 /* Top 4 bits of value to 17..20. */
8856 insn |= (relocation & 0xf0000) >> 5;
8857 /* Next 5 bits of the value to 11..15. */
8858 insn |= (relocation & 0xf800) << 5;
8859 /* And the final 11 bits of the value to bits 21 to 31. */
8860 insn |= relocation & 0x7ff;
8862 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8864 if (r_type == R_PPC_VLE_SDA21
8865 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
8869 else if (r_type == R_PPC_EMB_SDA21
8870 || r_type == R_PPC_VLE_SDA21
8871 || r_type == R_PPC_VLE_SDA21_LO)
8873 /* Fill in register field. */
8874 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8876 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8880 case R_PPC_VLE_SDAREL_LO16A:
8881 case R_PPC_VLE_SDAREL_LO16D:
8882 case R_PPC_VLE_SDAREL_HI16A:
8883 case R_PPC_VLE_SDAREL_HI16D:
8884 case R_PPC_VLE_SDAREL_HA16A:
8885 case R_PPC_VLE_SDAREL_HA16D:
8890 struct elf_link_hash_entry *sda = NULL;
8892 if (sec == NULL || sec->output_section == NULL)
8894 unresolved_reloc = TRUE;
8898 name = bfd_get_section_name (output_bfd, sec->output_section);
8899 if (((CONST_STRNEQ (name, ".sdata")
8900 && (name[6] == 0 || name[6] == '.'))
8901 || (CONST_STRNEQ (name, ".sbss")
8902 && (name[5] == 0 || name[5] == '.'))))
8905 sda = htab->sdata[0].sym;
8907 else if (CONST_STRNEQ (name, ".sdata2")
8908 || CONST_STRNEQ (name, ".sbss2"))
8911 sda = htab->sdata[1].sym;
8915 (*_bfd_error_handler)
8916 (_("%B: the target (%s) of a %s relocation is "
8917 "in the wrong output section (%s)"),
8923 bfd_set_error (bfd_error_bad_value);
8930 if (!is_static_defined (sda))
8932 unresolved_reloc = TRUE;
8937 value = (sda->root.u.def.section->output_section->vma
8938 + sda->root.u.def.section->output_offset
8941 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8942 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8943 value, split16a_type);
8944 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8945 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8946 value, split16d_type);
8947 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8949 value = value >> 16;
8950 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8951 value, split16a_type);
8953 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8955 value = value >> 16;
8956 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8957 value, split16d_type);
8959 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
8961 value = (value + 0x8000) >> 16;
8962 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8963 value, split16a_type);
8965 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
8967 value = (value + 0x8000) >> 16;
8968 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8969 value, split16d_type);
8974 /* Relocate against the beginning of the section. */
8976 case R_PPC_SECTOFF_LO:
8977 case R_PPC_SECTOFF_HI:
8978 case R_PPC_SECTOFF_HA:
8979 if (sec == NULL || sec->output_section == NULL)
8981 unresolved_reloc = TRUE;
8984 addend -= sec->output_section->vma;
8987 /* Negative relocations. */
8988 case R_PPC_EMB_NADDR32:
8989 case R_PPC_EMB_NADDR16:
8990 case R_PPC_EMB_NADDR16_LO:
8991 case R_PPC_EMB_NADDR16_HI:
8992 case R_PPC_EMB_NADDR16_HA:
8993 addend -= 2 * relocation;
8997 case R_PPC_GLOB_DAT:
8998 case R_PPC_JMP_SLOT:
8999 case R_PPC_RELATIVE:
9000 case R_PPC_IRELATIVE:
9002 case R_PPC_PLTREL32:
9003 case R_PPC_PLT16_LO:
9004 case R_PPC_PLT16_HI:
9005 case R_PPC_PLT16_HA:
9007 case R_PPC_EMB_RELSEC16:
9008 case R_PPC_EMB_RELST_LO:
9009 case R_PPC_EMB_RELST_HI:
9010 case R_PPC_EMB_RELST_HA:
9011 case R_PPC_EMB_BIT_FLD:
9012 info->callbacks->einfo
9013 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9018 bfd_set_error (bfd_error_invalid_operation);
9023 /* Do any further special processing. */
9029 case R_PPC_ADDR16_HA:
9030 case R_PPC_REL16_HA:
9031 case R_PPC_SECTOFF_HA:
9032 case R_PPC_TPREL16_HA:
9033 case R_PPC_DTPREL16_HA:
9034 case R_PPC_EMB_NADDR16_HA:
9035 case R_PPC_EMB_RELST_HA:
9036 /* It's just possible that this symbol is a weak symbol
9037 that's not actually defined anywhere. In that case,
9038 'sec' would be NULL, and we should leave the symbol
9039 alone (it will be set to zero elsewhere in the link). */
9044 case R_PPC_PLT16_HA:
9045 case R_PPC_GOT16_HA:
9046 case R_PPC_GOT_TLSGD16_HA:
9047 case R_PPC_GOT_TLSLD16_HA:
9048 case R_PPC_GOT_TPREL16_HA:
9049 case R_PPC_GOT_DTPREL16_HA:
9050 /* Add 0x10000 if sign bit in 0:15 is set.
9051 Bits 0:15 are not used. */
9056 case R_PPC_ADDR16_LO:
9058 case R_PPC_GOT16_LO:
9059 case R_PPC_SDAREL16:
9061 case R_PPC_SECTOFF_LO:
9062 case R_PPC_DTPREL16:
9063 case R_PPC_DTPREL16_LO:
9065 case R_PPC_TPREL16_LO:
9066 case R_PPC_GOT_TLSGD16:
9067 case R_PPC_GOT_TLSGD16_LO:
9068 case R_PPC_GOT_TLSLD16:
9069 case R_PPC_GOT_TLSLD16_LO:
9070 case R_PPC_GOT_DTPREL16:
9071 case R_PPC_GOT_DTPREL16_LO:
9072 case R_PPC_GOT_TPREL16:
9073 case R_PPC_GOT_TPREL16_LO:
9075 /* The 32-bit ABI lacks proper relocations to deal with
9076 certain 64-bit instructions. Prevent damage to bits
9077 that make up part of the insn opcode. */
9078 unsigned int insn, mask, lobit;
9080 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
9082 if (is_insn_ds_form (insn))
9084 else if (is_insn_dq_form (insn))
9088 lobit = mask & (relocation + addend);
9092 info->callbacks->einfo
9093 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9094 input_bfd, input_section, rel->r_offset,
9095 howto->name, sym_name, mask + 1);
9096 bfd_set_error (bfd_error_bad_value);
9099 addend += insn & mask;
9105 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9106 "offset = %ld, addend = %ld\n",
9111 (long) rel->r_offset,
9115 if (unresolved_reloc
9116 && !((input_section->flags & SEC_DEBUGGING) != 0
9118 && _bfd_elf_section_offset (output_bfd, info, input_section,
9119 rel->r_offset) != (bfd_vma) -1)
9121 info->callbacks->einfo
9122 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9123 input_bfd, input_section, rel->r_offset,
9129 /* 16-bit fields in insns mostly have signed values, but a
9130 few insns have 16-bit unsigned values. Really, we should
9131 have different reloc types. */
9132 if (howto->complain_on_overflow != complain_overflow_dont
9133 && howto->dst_mask == 0xffff
9134 && (input_section->flags & SEC_CODE) != 0)
9136 enum complain_overflow complain = complain_overflow_signed;
9138 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9142 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9143 if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9144 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9145 || (insn & (0x3f << 26)) == 26u << 26 /* xori */
9146 || (insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9147 complain = complain_overflow_unsigned;
9149 if (howto->complain_on_overflow != complain)
9152 alt_howto.complain_on_overflow = complain;
9157 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9158 rel->r_offset, relocation, addend);
9160 if (r != bfd_reloc_ok)
9162 if (r == bfd_reloc_overflow)
9168 && h->root.type == bfd_link_hash_undefweak
9169 && howto->pc_relative)
9171 /* Assume this is a call protected by other code that
9172 detect the symbol is undefined. If this is the case,
9173 we can safely ignore the overflow. If not, the
9174 program is hosed anyway, and a little warning isn't
9180 if (! (*info->callbacks->reloc_overflow) (info,
9181 (h ? &h->root : NULL),
9192 info->callbacks->einfo
9193 (_("%P: %H: %s reloc against `%s': error %d\n"),
9194 input_bfd, input_section, rel->r_offset,
9195 howto->name, sym_name, (int) r);
9202 fprintf (stderr, "\n");
9205 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9206 && input_section->size != input_section->rawsize
9207 && (strcmp (input_section->output_section->name, ".init") == 0
9208 || strcmp (input_section->output_section->name, ".fini") == 0))
9210 /* Branch around the trampolines. */
9211 unsigned int insn = B + input_section->size - input_section->rawsize;
9212 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9215 if (htab->params->ppc476_workaround
9216 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9217 && (!info->relocatable
9218 || (input_section->output_section->alignment_power
9219 >= htab->params->pagesize_p2)))
9221 struct ppc_elf_relax_info *relax_info;
9222 bfd_vma start_addr, end_addr, addr;
9223 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9225 relax_info = elf_section_data (input_section)->sec_info;
9226 if (relax_info->workaround_size != 0)
9227 memset (contents + input_section->size - relax_info->workaround_size,
9228 0, relax_info->workaround_size);
9230 /* The idea is: Replace the last instruction on a page with a
9231 branch to a patch area. Put the insn there followed by a
9232 branch back to the next page. Complicated a little by
9233 needing to handle moved conditional branches, and by not
9234 wanting to touch data-in-text. */
9236 start_addr = (input_section->output_section->vma
9237 + input_section->output_offset);
9238 end_addr = (start_addr + input_section->size
9239 - relax_info->workaround_size);
9240 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9244 bfd_vma offset = addr - start_addr;
9245 Elf_Internal_Rela *lo, *hi;
9246 bfd_boolean is_data;
9247 bfd_vma patch_off, patch_addr;
9250 /* Do we have a data reloc at this offset? If so, leave
9258 rel = lo + (hi - lo) / 2;
9259 if (rel->r_offset < offset)
9261 else if (rel->r_offset > offset + 3)
9265 switch (ELF32_R_TYPE (rel->r_info))
9282 /* Some instructions can be left alone too. In this
9283 category are most insns that unconditionally change
9284 control flow, and isync. Of these, some *must* be left
9285 alone, for example, the "bcl 20, 31, label" used in pic
9286 sequences to give the address of the next insn. twui
9287 and twu apparently are not safe. */
9288 insn = bfd_get_32 (input_bfd, contents + offset);
9290 || (insn & (0x3f << 26)) == (18u << 26) /* b */
9291 || ((insn & (0x3f << 26)) == (16u << 26) /* bc always */
9292 && (insn & (0x14 << 21)) == (0x14 << 21))
9293 || ((insn & (0x3f << 26)) == (19u << 26) /* blr, bctr */
9294 && (insn & (0x14 << 21)) == (0x14 << 21)
9295 && (insn & (0x1ff << 1)) == (16u << 1))
9296 || (insn & (0x3f << 26)) == (17u << 26) /* sc */
9297 || ((insn & (0x3f << 26)) == (19u << 26)
9298 && ((insn & (0x3ff << 1)) == (38u << 1) /* rfmci */
9299 || (insn & (0x3ff << 1)) == (50u << 1) /* rfi */
9300 || (insn & (0x3ff << 1)) == (51u << 1) /* rfci */
9301 || (insn & (0x3ff << 1)) == (82u << 1) /* rfsvc */
9302 || (insn & (0x3ff << 1)) == (150u << 1))) /* isync */)
9305 patch_addr = (start_addr + input_section->size
9306 - relax_info->workaround_size);
9307 patch_addr = (patch_addr + 15) & -16;
9308 patch_off = patch_addr - start_addr;
9309 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9312 && rel->r_offset >= offset
9313 && rel->r_offset < offset + 4)
9315 /* If the insn we are patching had a reloc, adjust the
9316 reloc r_offset so that the reloc applies to the moved
9317 location. This matters for -r and --emit-relocs. */
9318 if (rel + 1 != relend)
9320 Elf_Internal_Rela tmp = *rel;
9322 /* Keep the relocs sorted by r_offset. */
9323 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9326 relend[-1].r_offset += patch_off - offset;
9331 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9332 && (insn & 2) == 0 /* relative */)
9334 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9336 delta += offset - patch_off;
9337 if (info->relocatable && rel != NULL)
9339 if (!info->relocatable && rel != NULL)
9341 enum elf_ppc_reloc_type r_type;
9343 r_type = ELF32_R_TYPE (relend[-1].r_info);
9344 if (r_type == R_PPC_REL14_BRTAKEN)
9345 insn |= BRANCH_PREDICT_BIT;
9346 else if (r_type == R_PPC_REL14_BRNTAKEN)
9347 insn &= ~BRANCH_PREDICT_BIT;
9349 BFD_ASSERT (r_type == R_PPC_REL14);
9351 if ((r_type == R_PPC_REL14_BRTAKEN
9352 || r_type == R_PPC_REL14_BRNTAKEN)
9353 && delta + 0x8000 < 0x10000
9354 && (bfd_signed_vma) delta < 0)
9355 insn ^= BRANCH_PREDICT_BIT;
9357 if (delta + 0x8000 < 0x10000)
9359 bfd_put_32 (input_bfd,
9360 (insn & ~0xfffc) | (delta & 0xfffc),
9361 contents + patch_off);
9363 bfd_put_32 (input_bfd,
9364 B | ((offset + 4 - patch_off) & 0x3fffffc),
9365 contents + patch_off);
9372 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9374 relend[-1].r_offset += 8;
9375 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9377 bfd_put_32 (input_bfd,
9378 (insn & ~0xfffc) | 8,
9379 contents + patch_off);
9381 bfd_put_32 (input_bfd,
9382 B | ((offset + 4 - patch_off) & 0x3fffffc),
9383 contents + patch_off);
9385 bfd_put_32 (input_bfd,
9386 B | ((delta - 8) & 0x3fffffc),
9387 contents + patch_off);
9393 bfd_put_32 (input_bfd, insn, contents + patch_off);
9395 bfd_put_32 (input_bfd,
9396 B | ((offset + 4 - patch_off) & 0x3fffffc),
9397 contents + patch_off);
9400 BFD_ASSERT (patch_off <= input_section->size);
9401 relax_info->workaround_size = input_section->size - patch_off;
9408 /* Finish up dynamic symbol handling. We set the contents of various
9409 dynamic sections here. */
9412 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9413 struct bfd_link_info *info,
9414 struct elf_link_hash_entry *h,
9415 Elf_Internal_Sym *sym)
9417 struct ppc_elf_link_hash_table *htab;
9418 struct plt_entry *ent;
9419 bfd_boolean doneone;
9422 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9423 h->root.root.string);
9426 htab = ppc_elf_hash_table (info);
9427 BFD_ASSERT (htab->elf.dynobj != NULL);
9430 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9431 if (ent->plt.offset != (bfd_vma) -1)
9435 Elf_Internal_Rela rela;
9437 bfd_vma reloc_index;
9439 if (htab->plt_type == PLT_NEW
9440 || !htab->elf.dynamic_sections_created
9441 || h->dynindx == -1)
9442 reloc_index = ent->plt.offset / 4;
9445 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9446 / htab->plt_slot_size);
9447 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9448 && htab->plt_type == PLT_OLD)
9449 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9452 /* This symbol has an entry in the procedure linkage table.
9454 if (htab->plt_type == PLT_VXWORKS
9455 && htab->elf.dynamic_sections_created
9456 && h->dynindx != -1)
9459 const bfd_vma *plt_entry;
9461 /* The first three entries in .got.plt are reserved. */
9462 got_offset = (reloc_index + 3) * 4;
9464 /* Use the right PLT. */
9465 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9466 : ppc_elf_vxworks_plt_entry;
9468 /* Fill in the .plt on VxWorks. */
9471 bfd_put_32 (output_bfd,
9472 plt_entry[0] | PPC_HA (got_offset),
9473 htab->plt->contents + ent->plt.offset + 0);
9474 bfd_put_32 (output_bfd,
9475 plt_entry[1] | PPC_LO (got_offset),
9476 htab->plt->contents + ent->plt.offset + 4);
9480 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9482 bfd_put_32 (output_bfd,
9483 plt_entry[0] | PPC_HA (got_loc),
9484 htab->plt->contents + ent->plt.offset + 0);
9485 bfd_put_32 (output_bfd,
9486 plt_entry[1] | PPC_LO (got_loc),
9487 htab->plt->contents + ent->plt.offset + 4);
9490 bfd_put_32 (output_bfd, plt_entry[2],
9491 htab->plt->contents + ent->plt.offset + 8);
9492 bfd_put_32 (output_bfd, plt_entry[3],
9493 htab->plt->contents + ent->plt.offset + 12);
9495 /* This instruction is an immediate load. The value loaded is
9496 the byte offset of the R_PPC_JMP_SLOT relocation from the
9497 start of the .rela.plt section. The value is stored in the
9498 low-order 16 bits of the load instruction. */
9499 /* NOTE: It appears that this is now an index rather than a
9500 prescaled offset. */
9501 bfd_put_32 (output_bfd,
9502 plt_entry[4] | reloc_index,
9503 htab->plt->contents + ent->plt.offset + 16);
9504 /* This instruction is a PC-relative branch whose target is
9505 the start of the PLT section. The address of this branch
9506 instruction is 20 bytes beyond the start of this PLT entry.
9507 The address is encoded in bits 6-29, inclusive. The value
9508 stored is right-shifted by two bits, permitting a 26-bit
9510 bfd_put_32 (output_bfd,
9512 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9513 htab->plt->contents + ent->plt.offset + 20);
9514 bfd_put_32 (output_bfd, plt_entry[6],
9515 htab->plt->contents + ent->plt.offset + 24);
9516 bfd_put_32 (output_bfd, plt_entry[7],
9517 htab->plt->contents + ent->plt.offset + 28);
9519 /* Fill in the GOT entry corresponding to this PLT slot with
9520 the address immediately after the "bctr" instruction
9521 in this PLT entry. */
9522 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9523 + htab->plt->output_offset
9524 + ent->plt.offset + 16),
9525 htab->sgotplt->contents + got_offset);
9529 /* Fill in a couple of entries in .rela.plt.unloaded. */
9530 loc = htab->srelplt2->contents
9531 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9532 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9533 * sizeof (Elf32_External_Rela));
9535 /* Provide the @ha relocation for the first instruction. */
9536 rela.r_offset = (htab->plt->output_section->vma
9537 + htab->plt->output_offset
9538 + ent->plt.offset + 2);
9539 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9541 rela.r_addend = got_offset;
9542 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9543 loc += sizeof (Elf32_External_Rela);
9545 /* Provide the @l relocation for the second instruction. */
9546 rela.r_offset = (htab->plt->output_section->vma
9547 + htab->plt->output_offset
9548 + ent->plt.offset + 6);
9549 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9551 rela.r_addend = got_offset;
9552 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9553 loc += sizeof (Elf32_External_Rela);
9555 /* Provide a relocation for the GOT entry corresponding to this
9556 PLT slot. Point it at the middle of the .plt entry. */
9557 rela.r_offset = (htab->sgotplt->output_section->vma
9558 + htab->sgotplt->output_offset
9560 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9562 rela.r_addend = ent->plt.offset + 16;
9563 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9566 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9567 In particular, the offset for the relocation is not the
9568 address of the PLT entry for this function, as specified
9569 by the ABI. Instead, the offset is set to the address of
9570 the GOT slot for this function. See EABI 4.4.4.1. */
9571 rela.r_offset = (htab->sgotplt->output_section->vma
9572 + htab->sgotplt->output_offset
9578 asection *splt = htab->plt;
9579 if (!htab->elf.dynamic_sections_created
9580 || h->dynindx == -1)
9583 rela.r_offset = (splt->output_section->vma
9584 + splt->output_offset
9586 if (htab->plt_type == PLT_OLD
9587 || !htab->elf.dynamic_sections_created
9588 || h->dynindx == -1)
9590 /* We don't need to fill in the .plt. The ppc dynamic
9591 linker will fill it in. */
9595 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9596 + htab->glink->output_section->vma
9597 + htab->glink->output_offset);
9598 bfd_put_32 (output_bfd, val,
9599 splt->contents + ent->plt.offset);
9603 /* Fill in the entry in the .rela.plt section. */
9605 if (!htab->elf.dynamic_sections_created
9606 || h->dynindx == -1)
9608 BFD_ASSERT (h->type == STT_GNU_IFUNC
9610 && (h->root.type == bfd_link_hash_defined
9611 || h->root.type == bfd_link_hash_defweak));
9612 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9613 rela.r_addend = SYM_VAL (h);
9616 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9618 if (!htab->elf.dynamic_sections_created
9619 || h->dynindx == -1)
9620 loc = (htab->reliplt->contents
9621 + (htab->reliplt->reloc_count++
9622 * sizeof (Elf32_External_Rela)));
9624 loc = (htab->relplt->contents
9625 + reloc_index * sizeof (Elf32_External_Rela));
9626 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9628 if (!h->def_regular)
9630 /* Mark the symbol as undefined, rather than as
9631 defined in the .plt section. Leave the value if
9632 there were any relocations where pointer equality
9633 matters (this is a clue for the dynamic linker, to
9634 make function pointer comparisons work between an
9635 application and shared library), otherwise set it
9637 sym->st_shndx = SHN_UNDEF;
9638 if (!h->pointer_equality_needed)
9640 else if (!h->ref_regular_nonweak)
9642 /* This breaks function pointer comparisons, but
9643 that is better than breaking tests for a NULL
9644 function pointer. */
9648 else if (h->type == STT_GNU_IFUNC
9651 /* Set the value of ifunc symbols in a non-pie
9652 executable to the glink entry. This is to avoid
9653 text relocations. We can't do this for ifunc in
9654 allocate_dynrelocs, as we do for normal dynamic
9655 function symbols with plt entries, because we need
9656 to keep the original value around for the ifunc
9658 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9659 (output_bfd, htab->glink->output_section));
9660 sym->st_value = (ent->glink_offset
9661 + htab->glink->output_offset
9662 + htab->glink->output_section->vma);
9667 if (htab->plt_type == PLT_NEW
9668 || !htab->elf.dynamic_sections_created
9669 || h->dynindx == -1)
9672 asection *splt = htab->plt;
9673 if (!htab->elf.dynamic_sections_created
9674 || h->dynindx == -1)
9677 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9679 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
9681 bfd_put_32 (output_bfd, LWZ_11_3, p);
9683 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9685 bfd_put_32 (output_bfd, MR_0_3, p);
9687 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9689 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9691 bfd_put_32 (output_bfd, BEQLR, p);
9693 bfd_put_32 (output_bfd, MR_3_0, p);
9695 bfd_put_32 (output_bfd, NOP, p);
9699 write_glink_stub (ent, splt, p, info);
9702 /* We only need one non-PIC glink stub. */
9712 Elf_Internal_Rela rela;
9715 /* This symbols needs a copy reloc. Set it up. */
9718 fprintf (stderr, ", copy");
9721 BFD_ASSERT (h->dynindx != -1);
9723 if (ppc_elf_hash_entry (h)->has_sda_refs)
9727 BFD_ASSERT (s != NULL);
9729 rela.r_offset = SYM_VAL (h);
9730 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9732 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9733 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9737 fprintf (stderr, "\n");
9743 static enum elf_reloc_type_class
9744 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9745 const asection *rel_sec,
9746 const Elf_Internal_Rela *rela)
9748 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9750 if (rel_sec == htab->reliplt)
9751 return reloc_class_ifunc;
9753 switch (ELF32_R_TYPE (rela->r_info))
9755 case R_PPC_RELATIVE:
9756 return reloc_class_relative;
9757 case R_PPC_JMP_SLOT:
9758 return reloc_class_plt;
9760 return reloc_class_copy;
9762 return reloc_class_normal;
9766 /* Finish up the dynamic sections. */
9769 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9770 struct bfd_link_info *info)
9774 struct ppc_elf_link_hash_table *htab;
9777 bfd_boolean ret = TRUE;
9780 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9783 htab = ppc_elf_hash_table (info);
9784 dynobj = elf_hash_table (info)->dynobj;
9785 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9786 if (htab->is_vxworks)
9787 splt = bfd_get_linker_section (dynobj, ".plt");
9792 if (htab->elf.hgot != NULL)
9793 got = SYM_VAL (htab->elf.hgot);
9795 if (htab->elf.dynamic_sections_created)
9797 Elf32_External_Dyn *dyncon, *dynconend;
9799 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
9801 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9802 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9803 for (; dyncon < dynconend; dyncon++)
9805 Elf_Internal_Dyn dyn;
9808 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9813 if (htab->is_vxworks)
9817 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9821 dyn.d_un.d_val = htab->relplt->size;
9826 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9830 dyn.d_un.d_ptr = got;
9834 if (htab->is_vxworks)
9837 dyn.d_un.d_ptr -= htab->relplt->size;
9843 if (htab->is_vxworks
9844 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9849 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9853 if (htab->got != NULL)
9855 if (htab->elf.hgot->root.u.def.section == htab->got
9856 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
9858 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
9860 p += htab->elf.hgot->root.u.def.value;
9861 if (htab->plt_type == PLT_OLD)
9863 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9864 so that a function can easily find the address of
9865 _GLOBAL_OFFSET_TABLE_. */
9866 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9867 < htab->elf.hgot->root.u.def.section->size);
9868 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9873 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9874 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9875 < htab->elf.hgot->root.u.def.section->size);
9876 bfd_put_32 (output_bfd, val, p);
9881 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
9882 htab->elf.hgot->root.root.string,
9883 (htab->sgotplt != NULL
9884 ? htab->sgotplt->name : htab->got->name));
9885 bfd_set_error (bfd_error_bad_value);
9889 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
9892 /* Fill in the first entry in the VxWorks procedure linkage table. */
9893 if (splt && splt->size > 0)
9895 /* Use the right PLT. */
9896 const bfd_vma *plt_entry = (info->shared
9897 ? ppc_elf_vxworks_pic_plt0_entry
9898 : ppc_elf_vxworks_plt0_entry);
9902 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9904 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9905 splt->contents + 0);
9906 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9907 splt->contents + 4);
9911 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
9912 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
9914 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
9915 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
9916 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
9917 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
9918 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
9919 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
9923 Elf_Internal_Rela rela;
9926 loc = htab->srelplt2->contents;
9928 /* Output the @ha relocation for the first instruction. */
9929 rela.r_offset = (htab->plt->output_section->vma
9930 + htab->plt->output_offset
9932 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9934 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9935 loc += sizeof (Elf32_External_Rela);
9937 /* Output the @l relocation for the second instruction. */
9938 rela.r_offset = (htab->plt->output_section->vma
9939 + htab->plt->output_offset
9941 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9943 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9944 loc += sizeof (Elf32_External_Rela);
9946 /* Fix up the remaining relocations. They may have the wrong
9947 symbol index for _G_O_T_ or _P_L_T_ depending on the order
9948 in which symbols were output. */
9949 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
9951 Elf_Internal_Rela rel;
9953 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9954 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9955 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9956 loc += sizeof (Elf32_External_Rela);
9958 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9959 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9960 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9961 loc += sizeof (Elf32_External_Rela);
9963 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9964 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9965 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9966 loc += sizeof (Elf32_External_Rela);
9971 if (htab->glink != NULL
9972 && htab->glink->contents != NULL
9973 && htab->elf.dynamic_sections_created)
9976 unsigned char *endp;
9981 * PIC glink code is the following:
9983 * # ith PLT code stub.
9984 * addis 11,30,(plt+(i-1)*4-got)@ha
9985 * lwz 11,(plt+(i-1)*4-got)@l(11)
9989 * # A table of branches, one for each plt entry.
9990 * # The idea is that the plt call stub loads ctr and r11 with these
9991 * # addresses, so (r11 - res_0) gives the plt index * 4.
9992 * res_0: b PLTresolve
9993 * res_1: b PLTresolve
9995 * # Some number of entries towards the end can be nops
10001 * addis 11,11,(1f-res_0)@ha
10004 * 1: addi 11,11,(1b-res_0)@l
10007 * sub 11,11,12 # r11 = index * 4
10008 * addis 12,12,(got+4-1b)@ha
10009 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10010 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10013 * add 11,0,11 # r11 = index * 12 = reloc offset.
10016 static const unsigned int pic_plt_resolve[] =
10037 * Non-PIC glink code is a little simpler.
10039 * # ith PLT code stub.
10040 * lis 11,(plt+(i-1)*4)@ha
10041 * lwz 11,(plt+(i-1)*4)@l(11)
10045 * The branch table is the same, then comes
10048 * lis 12,(got+4)@ha
10049 * addis 11,11,(-res_0)@ha
10050 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10051 * addi 11,11,(-res_0)@l # r11 = index * 4
10054 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10055 * add 11,0,11 # r11 = index * 12 = reloc offset.
10058 static const unsigned int plt_resolve[] =
10078 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10080 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10083 /* Build the branch table, one for each plt entry (less one),
10084 and perhaps some padding. */
10085 p = htab->glink->contents;
10086 p += htab->glink_pltresolve;
10087 endp = htab->glink->contents;
10088 endp += htab->glink->size - GLINK_PLTRESOLVE;
10089 while (p < endp - 8 * 4)
10091 bfd_put_32 (output_bfd, B + endp - p, p);
10096 bfd_put_32 (output_bfd, NOP, p);
10100 res0 = (htab->glink_pltresolve
10101 + htab->glink->output_section->vma
10102 + htab->glink->output_offset);
10104 /* Last comes the PLTresolve stub. */
10109 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10111 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
10114 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10116 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10117 + htab->glink->output_section->vma
10118 + htab->glink->output_offset);
10120 bfd_put_32 (output_bfd,
10121 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10122 bfd_put_32 (output_bfd,
10123 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10124 bfd_put_32 (output_bfd,
10125 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10126 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10128 bfd_put_32 (output_bfd,
10129 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10130 bfd_put_32 (output_bfd,
10131 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10135 bfd_put_32 (output_bfd,
10136 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10137 bfd_put_32 (output_bfd,
10138 LWZ_12_12 + 4, p + 9*4);
10143 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10145 bfd_put_32 (output_bfd, plt_resolve[i], p);
10148 p -= 4 * ARRAY_SIZE (plt_resolve);
10150 bfd_put_32 (output_bfd,
10151 LIS_12 + PPC_HA (got + 4), p + 0*4);
10152 bfd_put_32 (output_bfd,
10153 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10154 bfd_put_32 (output_bfd,
10155 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10156 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10158 bfd_put_32 (output_bfd,
10159 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10160 bfd_put_32 (output_bfd,
10161 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10165 bfd_put_32 (output_bfd,
10166 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10167 bfd_put_32 (output_bfd,
10168 LWZ_12_12 + 4, p + 6*4);
10173 if (htab->glink_eh_frame != NULL
10174 && htab->glink_eh_frame->contents != NULL)
10176 unsigned char *p = htab->glink_eh_frame->contents;
10179 p += sizeof (glink_eh_frame_cie);
10184 /* Offset to .glink. */
10185 val = (htab->glink->output_section->vma
10186 + htab->glink->output_offset);
10187 val -= (htab->glink_eh_frame->output_section->vma
10188 + htab->glink_eh_frame->output_offset);
10189 val -= p - htab->glink_eh_frame->contents;
10190 bfd_put_32 (htab->elf.dynobj, val, p);
10192 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10193 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10194 htab->glink_eh_frame,
10195 htab->glink_eh_frame->contents))
10202 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
10203 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10204 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
10205 #define TARGET_BIG_NAME "elf32-powerpc"
10206 #define ELF_ARCH bfd_arch_powerpc
10207 #define ELF_TARGET_ID PPC32_ELF_DATA
10208 #define ELF_MACHINE_CODE EM_PPC
10209 #ifdef __QNXTARGET__
10210 #define ELF_MAXPAGESIZE 0x1000
10212 #define ELF_MAXPAGESIZE 0x10000
10214 #define ELF_MINPAGESIZE 0x1000
10215 #define ELF_COMMONPAGESIZE 0x1000
10216 #define elf_info_to_howto ppc_elf_info_to_howto
10218 #ifdef EM_CYGNUS_POWERPC
10219 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10223 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10226 #define elf_backend_plt_not_loaded 1
10227 #define elf_backend_can_gc_sections 1
10228 #define elf_backend_can_refcount 1
10229 #define elf_backend_rela_normal 1
10230 #define elf_backend_caches_rawsize 1
10232 #define bfd_elf32_mkobject ppc_elf_mkobject
10233 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10234 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10235 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10236 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10237 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10238 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10239 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10241 #define elf_backend_object_p ppc_elf_object_p
10242 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10243 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10244 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10245 #define elf_backend_relocate_section ppc_elf_relocate_section
10246 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10247 #define elf_backend_check_relocs ppc_elf_check_relocs
10248 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10249 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10250 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10251 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10252 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10253 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10254 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10255 #define elf_backend_fake_sections ppc_elf_fake_sections
10256 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10257 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10258 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10259 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10260 #define elf_backend_write_core_note ppc_elf_write_core_note
10261 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10262 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10263 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10264 #define elf_backend_write_section ppc_elf_write_section
10265 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10266 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10267 #define elf_backend_action_discarded ppc_elf_action_discarded
10268 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10269 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10270 #define elf_backend_section_processing ppc_elf_section_processing
10272 #include "elf32-target.h"
10274 /* FreeBSD Target */
10276 #undef TARGET_LITTLE_SYM
10277 #undef TARGET_LITTLE_NAME
10279 #undef TARGET_BIG_SYM
10280 #define TARGET_BIG_SYM bfd_elf32_powerpc_freebsd_vec
10281 #undef TARGET_BIG_NAME
10282 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10285 #define ELF_OSABI ELFOSABI_FREEBSD
10288 #define elf32_bed elf32_powerpc_fbsd_bed
10290 #include "elf32-target.h"
10292 /* VxWorks Target */
10294 #undef TARGET_LITTLE_SYM
10295 #undef TARGET_LITTLE_NAME
10297 #undef TARGET_BIG_SYM
10298 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
10299 #undef TARGET_BIG_NAME
10300 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10304 /* VxWorks uses the elf default section flags for .plt. */
10305 static const struct bfd_elf_special_section *
10306 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10308 if (sec->name == NULL)
10311 if (strcmp (sec->name, ".plt") == 0)
10312 return _bfd_elf_get_sec_type_attr (abfd, sec);
10314 return ppc_elf_get_sec_type_attr (abfd, sec);
10317 /* Like ppc_elf_link_hash_table_create, but overrides
10318 appropriately for VxWorks. */
10319 static struct bfd_link_hash_table *
10320 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10322 struct bfd_link_hash_table *ret;
10324 ret = ppc_elf_link_hash_table_create (abfd);
10327 struct ppc_elf_link_hash_table *htab
10328 = (struct ppc_elf_link_hash_table *)ret;
10329 htab->is_vxworks = 1;
10330 htab->plt_type = PLT_VXWORKS;
10331 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10332 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10333 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10338 /* Tweak magic VxWorks symbols as they are loaded. */
10340 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10341 struct bfd_link_info *info,
10342 Elf_Internal_Sym *sym,
10343 const char **namep ATTRIBUTE_UNUSED,
10344 flagword *flagsp ATTRIBUTE_UNUSED,
10348 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10352 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10356 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10358 ppc_elf_final_write_processing(abfd, linker);
10359 elf_vxworks_final_write_processing(abfd, linker);
10362 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10364 #undef elf_backend_want_plt_sym
10365 #define elf_backend_want_plt_sym 1
10366 #undef elf_backend_want_got_plt
10367 #define elf_backend_want_got_plt 1
10368 #undef elf_backend_got_symbol_offset
10369 #define elf_backend_got_symbol_offset 0
10370 #undef elf_backend_plt_not_loaded
10371 #define elf_backend_plt_not_loaded 0
10372 #undef elf_backend_plt_readonly
10373 #define elf_backend_plt_readonly 1
10374 #undef elf_backend_got_header_size
10375 #define elf_backend_got_header_size 12
10377 #undef bfd_elf32_get_synthetic_symtab
10379 #undef bfd_elf32_bfd_link_hash_table_create
10380 #define bfd_elf32_bfd_link_hash_table_create \
10381 ppc_elf_vxworks_link_hash_table_create
10382 #undef elf_backend_add_symbol_hook
10383 #define elf_backend_add_symbol_hook \
10384 ppc_elf_vxworks_add_symbol_hook
10385 #undef elf_backend_link_output_symbol_hook
10386 #define elf_backend_link_output_symbol_hook \
10387 elf_vxworks_link_output_symbol_hook
10388 #undef elf_backend_final_write_processing
10389 #define elf_backend_final_write_processing \
10390 ppc_elf_vxworks_final_write_processing
10391 #undef elf_backend_get_sec_type_attr
10392 #define elf_backend_get_sec_type_attr \
10393 ppc_elf_vxworks_get_sec_type_attr
10394 #undef elf_backend_emit_relocs
10395 #define elf_backend_emit_relocs \
10396 elf_vxworks_emit_relocs
10399 #define elf32_bed ppc_elf_vxworks_bed
10400 #undef elf_backend_post_process_headers
10402 #include "elf32-target.h"