1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2018 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 "opcode/ppc.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(htab, h) \
74 && h == htab->tls_get_addr \
75 && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \
76 + (1u << htab->params->plt_stub_align) - 1) \
77 & -(1u << htab->params->plt_stub_align))
79 /* VxWorks uses its own plt layout, filled in by the static linker. */
81 /* The standard VxWorks PLT entry. */
82 #define VXWORKS_PLT_ENTRY_SIZE 32
83 static const bfd_vma ppc_elf_vxworks_plt_entry
84 [VXWORKS_PLT_ENTRY_SIZE / 4] =
86 0x3d800000, /* lis r12,0 */
87 0x818c0000, /* lwz r12,0(r12) */
88 0x7d8903a6, /* mtctr r12 */
89 0x4e800420, /* bctr */
90 0x39600000, /* li r11,0 */
91 0x48000000, /* b 14 <.PLT0resolve+0x4> */
95 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
96 [VXWORKS_PLT_ENTRY_SIZE / 4] =
98 0x3d9e0000, /* addis r12,r30,0 */
99 0x818c0000, /* lwz r12,0(r12) */
100 0x7d8903a6, /* mtctr r12 */
101 0x4e800420, /* bctr */
102 0x39600000, /* li r11,0 */
103 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
104 0x60000000, /* nop */
105 0x60000000, /* nop */
108 /* The initial VxWorks PLT entry. */
109 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
110 static const bfd_vma ppc_elf_vxworks_plt0_entry
111 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
113 0x3d800000, /* lis r12,0 */
114 0x398c0000, /* addi r12,r12,0 */
115 0x800c0008, /* lwz r0,8(r12) */
116 0x7c0903a6, /* mtctr r0 */
117 0x818c0004, /* lwz r12,4(r12) */
118 0x4e800420, /* bctr */
119 0x60000000, /* nop */
120 0x60000000, /* nop */
122 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
123 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
125 0x819e0008, /* lwz r12,8(r30) */
126 0x7d8903a6, /* mtctr r12 */
127 0x819e0004, /* lwz r12,4(r30) */
128 0x4e800420, /* bctr */
129 0x60000000, /* nop */
130 0x60000000, /* nop */
131 0x60000000, /* nop */
132 0x60000000, /* nop */
135 /* For executables, we have some additional relocations in
136 .rela.plt.unloaded, for the kernel loader. */
138 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
139 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
140 /* The number of relocations in the PLTResolve slot. */
141 #define VXWORKS_PLTRESOLVE_RELOCS 2
142 /* The number of relocations in the PLTResolve slot when creating
144 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
146 /* Some instructions. */
147 #define ADDIS_11_11 0x3d6b0000
148 #define ADDIS_11_30 0x3d7e0000
149 #define ADDIS_12_12 0x3d8c0000
150 #define ADDI_11_11 0x396b0000
151 #define ADD_0_11_11 0x7c0b5a14
152 #define ADD_3_12_2 0x7c6c1214
153 #define ADD_11_0_11 0x7d605a14
155 #define BA 0x48000002
156 #define BCL_20_31 0x429f0005
157 #define BCTR 0x4e800420
158 #define BEQLR 0x4d820020
159 #define CMPWI_11_0 0x2c0b0000
160 #define LIS_11 0x3d600000
161 #define LIS_12 0x3d800000
162 #define LWZU_0_12 0x840c0000
163 #define LWZ_0_12 0x800c0000
164 #define LWZ_11_3 0x81630000
165 #define LWZ_11_11 0x816b0000
166 #define LWZ_11_30 0x817e0000
167 #define LWZ_12_3 0x81830000
168 #define LWZ_12_12 0x818c0000
169 #define MR_0_3 0x7c601b78
170 #define MR_3_0 0x7c030378
171 #define MFLR_0 0x7c0802a6
172 #define MFLR_12 0x7d8802a6
173 #define MTCTR_0 0x7c0903a6
174 #define MTCTR_11 0x7d6903a6
175 #define MTLR_0 0x7c0803a6
176 #define NOP 0x60000000
177 #define SUB_11_11_12 0x7d6c5850
179 /* Offset of tp and dtp pointers from start of TLS block. */
180 #define TP_OFFSET 0x7000
181 #define DTP_OFFSET 0x8000
183 /* The value of a defined global symbol. */
184 #define SYM_VAL(SYM) \
185 ((SYM)->root.u.def.section->output_section->vma \
186 + (SYM)->root.u.def.section->output_offset \
187 + (SYM)->root.u.def.value)
189 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
191 static reloc_howto_type ppc_elf_howto_raw[] = {
192 /* This reloc does nothing. */
193 HOWTO (R_PPC_NONE, /* type */
195 3, /* size (0 = byte, 1 = short, 2 = long) */
197 FALSE, /* pc_relative */
199 complain_overflow_dont, /* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_PPC_NONE", /* name */
202 FALSE, /* partial_inplace */
205 FALSE), /* pcrel_offset */
207 /* A standard 32 bit relocation. */
208 HOWTO (R_PPC_ADDR32, /* type */
210 2, /* size (0 = byte, 1 = short, 2 = long) */
212 FALSE, /* pc_relative */
214 complain_overflow_dont, /* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_PPC_ADDR32", /* name */
217 FALSE, /* partial_inplace */
219 0xffffffff, /* dst_mask */
220 FALSE), /* pcrel_offset */
222 /* An absolute 26 bit branch; the lower two bits must be zero.
223 FIXME: we don't check that, we just clear them. */
224 HOWTO (R_PPC_ADDR24, /* type */
226 2, /* size (0 = byte, 1 = short, 2 = long) */
228 FALSE, /* pc_relative */
230 complain_overflow_signed, /* complain_on_overflow */
231 bfd_elf_generic_reloc, /* special_function */
232 "R_PPC_ADDR24", /* name */
233 FALSE, /* partial_inplace */
235 0x3fffffc, /* dst_mask */
236 FALSE), /* pcrel_offset */
238 /* A standard 16 bit relocation. */
239 HOWTO (R_PPC_ADDR16, /* type */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
243 FALSE, /* pc_relative */
245 complain_overflow_bitfield, /* complain_on_overflow */
246 bfd_elf_generic_reloc, /* special_function */
247 "R_PPC_ADDR16", /* name */
248 FALSE, /* partial_inplace */
250 0xffff, /* dst_mask */
251 FALSE), /* pcrel_offset */
253 /* A 16 bit relocation without overflow. */
254 HOWTO (R_PPC_ADDR16_LO, /* type */
256 1, /* size (0 = byte, 1 = short, 2 = long) */
258 FALSE, /* pc_relative */
260 complain_overflow_dont,/* complain_on_overflow */
261 bfd_elf_generic_reloc, /* special_function */
262 "R_PPC_ADDR16_LO", /* name */
263 FALSE, /* partial_inplace */
265 0xffff, /* dst_mask */
266 FALSE), /* pcrel_offset */
268 /* The high order 16 bits of an address. */
269 HOWTO (R_PPC_ADDR16_HI, /* type */
271 1, /* size (0 = byte, 1 = short, 2 = long) */
273 FALSE, /* pc_relative */
275 complain_overflow_dont, /* complain_on_overflow */
276 bfd_elf_generic_reloc, /* special_function */
277 "R_PPC_ADDR16_HI", /* name */
278 FALSE, /* partial_inplace */
280 0xffff, /* dst_mask */
281 FALSE), /* pcrel_offset */
283 /* The high order 16 bits of an address, plus 1 if the contents of
284 the low 16 bits, treated as a signed number, is negative. */
285 HOWTO (R_PPC_ADDR16_HA, /* type */
287 1, /* size (0 = byte, 1 = short, 2 = long) */
289 FALSE, /* pc_relative */
291 complain_overflow_dont, /* complain_on_overflow */
292 ppc_elf_addr16_ha_reloc, /* special_function */
293 "R_PPC_ADDR16_HA", /* name */
294 FALSE, /* partial_inplace */
296 0xffff, /* dst_mask */
297 FALSE), /* pcrel_offset */
299 /* An absolute 16 bit branch; the lower two bits must be zero.
300 FIXME: we don't check that, we just clear them. */
301 HOWTO (R_PPC_ADDR14, /* type */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE, /* pc_relative */
307 complain_overflow_signed, /* complain_on_overflow */
308 bfd_elf_generic_reloc, /* special_function */
309 "R_PPC_ADDR14", /* name */
310 FALSE, /* partial_inplace */
312 0xfffc, /* dst_mask */
313 FALSE), /* pcrel_offset */
315 /* An absolute 16 bit branch, for which bit 10 should be set to
316 indicate that the branch is expected to be taken. The lower two
317 bits must be zero. */
318 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
322 FALSE, /* pc_relative */
324 complain_overflow_signed, /* complain_on_overflow */
325 bfd_elf_generic_reloc, /* special_function */
326 "R_PPC_ADDR14_BRTAKEN",/* name */
327 FALSE, /* partial_inplace */
329 0xfffc, /* dst_mask */
330 FALSE), /* pcrel_offset */
332 /* An absolute 16 bit branch, for which bit 10 should be set to
333 indicate that the branch is not expected to be taken. The lower
334 two bits must be zero. */
335 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE, /* pc_relative */
341 complain_overflow_signed, /* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC_ADDR14_BRNTAKEN",/* name */
344 FALSE, /* partial_inplace */
346 0xfffc, /* dst_mask */
347 FALSE), /* pcrel_offset */
349 /* A relative 26 bit branch; the lower two bits must be zero. */
350 HOWTO (R_PPC_REL24, /* type */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
354 TRUE, /* pc_relative */
356 complain_overflow_signed, /* complain_on_overflow */
357 bfd_elf_generic_reloc, /* special_function */
358 "R_PPC_REL24", /* name */
359 FALSE, /* partial_inplace */
361 0x3fffffc, /* dst_mask */
362 TRUE), /* pcrel_offset */
364 /* A relative 16 bit branch; the lower two bits must be zero. */
365 HOWTO (R_PPC_REL14, /* type */
367 2, /* size (0 = byte, 1 = short, 2 = long) */
369 TRUE, /* pc_relative */
371 complain_overflow_signed, /* complain_on_overflow */
372 bfd_elf_generic_reloc, /* special_function */
373 "R_PPC_REL14", /* name */
374 FALSE, /* partial_inplace */
376 0xfffc, /* dst_mask */
377 TRUE), /* pcrel_offset */
379 /* A relative 16 bit branch. Bit 10 should be set to indicate that
380 the branch is expected to be taken. The lower two bits must be
382 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
386 TRUE, /* pc_relative */
388 complain_overflow_signed, /* complain_on_overflow */
389 bfd_elf_generic_reloc, /* special_function */
390 "R_PPC_REL14_BRTAKEN", /* name */
391 FALSE, /* partial_inplace */
393 0xfffc, /* dst_mask */
394 TRUE), /* pcrel_offset */
396 /* A relative 16 bit branch. Bit 10 should be set to indicate that
397 the branch is not expected to be taken. The lower two bits must
399 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
403 TRUE, /* pc_relative */
405 complain_overflow_signed, /* complain_on_overflow */
406 bfd_elf_generic_reloc, /* special_function */
407 "R_PPC_REL14_BRNTAKEN",/* name */
408 FALSE, /* partial_inplace */
410 0xfffc, /* dst_mask */
411 TRUE), /* pcrel_offset */
413 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
415 HOWTO (R_PPC_GOT16, /* type */
417 1, /* size (0 = byte, 1 = short, 2 = long) */
419 FALSE, /* pc_relative */
421 complain_overflow_signed, /* complain_on_overflow */
422 ppc_elf_unhandled_reloc, /* special_function */
423 "R_PPC_GOT16", /* name */
424 FALSE, /* partial_inplace */
426 0xffff, /* dst_mask */
427 FALSE), /* pcrel_offset */
429 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
431 HOWTO (R_PPC_GOT16_LO, /* type */
433 1, /* size (0 = byte, 1 = short, 2 = long) */
435 FALSE, /* pc_relative */
437 complain_overflow_dont, /* complain_on_overflow */
438 ppc_elf_unhandled_reloc, /* special_function */
439 "R_PPC_GOT16_LO", /* name */
440 FALSE, /* partial_inplace */
442 0xffff, /* dst_mask */
443 FALSE), /* pcrel_offset */
445 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
447 HOWTO (R_PPC_GOT16_HI, /* type */
449 1, /* size (0 = byte, 1 = short, 2 = long) */
451 FALSE, /* pc_relative */
453 complain_overflow_dont, /* complain_on_overflow */
454 ppc_elf_unhandled_reloc, /* special_function */
455 "R_PPC_GOT16_HI", /* name */
456 FALSE, /* partial_inplace */
458 0xffff, /* dst_mask */
459 FALSE), /* pcrel_offset */
461 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
463 HOWTO (R_PPC_GOT16_HA, /* type */
465 1, /* size (0 = byte, 1 = short, 2 = long) */
467 FALSE, /* pc_relative */
469 complain_overflow_dont, /* complain_on_overflow */
470 ppc_elf_unhandled_reloc, /* special_function */
471 "R_PPC_GOT16_HA", /* name */
472 FALSE, /* partial_inplace */
474 0xffff, /* dst_mask */
475 FALSE), /* pcrel_offset */
477 /* Like R_PPC_REL24, but referring to the procedure linkage table
478 entry for the symbol. */
479 HOWTO (R_PPC_PLTREL24, /* type */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
483 TRUE, /* pc_relative */
485 complain_overflow_signed, /* complain_on_overflow */
486 ppc_elf_unhandled_reloc, /* special_function */
487 "R_PPC_PLTREL24", /* name */
488 FALSE, /* partial_inplace */
490 0x3fffffc, /* dst_mask */
491 TRUE), /* pcrel_offset */
493 /* This is used only by the dynamic linker. The symbol should exist
494 both in the object being run and in some shared library. The
495 dynamic linker copies the data addressed by the symbol from the
496 shared library into the object, because the object being
497 run has to have the data at some particular address. */
498 HOWTO (R_PPC_COPY, /* type */
500 2, /* size (0 = byte, 1 = short, 2 = long) */
502 FALSE, /* pc_relative */
504 complain_overflow_dont, /* complain_on_overflow */
505 ppc_elf_unhandled_reloc, /* special_function */
506 "R_PPC_COPY", /* name */
507 FALSE, /* partial_inplace */
510 FALSE), /* pcrel_offset */
512 /* Like R_PPC_ADDR32, but used when setting global offset table
514 HOWTO (R_PPC_GLOB_DAT, /* type */
516 2, /* size (0 = byte, 1 = short, 2 = long) */
518 FALSE, /* pc_relative */
520 complain_overflow_dont, /* complain_on_overflow */
521 ppc_elf_unhandled_reloc, /* special_function */
522 "R_PPC_GLOB_DAT", /* name */
523 FALSE, /* partial_inplace */
525 0xffffffff, /* dst_mask */
526 FALSE), /* pcrel_offset */
528 /* Marks a procedure linkage table entry for a symbol. */
529 HOWTO (R_PPC_JMP_SLOT, /* type */
531 2, /* size (0 = byte, 1 = short, 2 = long) */
533 FALSE, /* pc_relative */
535 complain_overflow_dont, /* complain_on_overflow */
536 ppc_elf_unhandled_reloc, /* special_function */
537 "R_PPC_JMP_SLOT", /* name */
538 FALSE, /* partial_inplace */
541 FALSE), /* pcrel_offset */
543 /* Used only by the dynamic linker. When the object is run, this
544 longword is set to the load address of the object, plus the
546 HOWTO (R_PPC_RELATIVE, /* type */
548 2, /* size (0 = byte, 1 = short, 2 = long) */
550 FALSE, /* pc_relative */
552 complain_overflow_dont, /* complain_on_overflow */
553 bfd_elf_generic_reloc, /* special_function */
554 "R_PPC_RELATIVE", /* name */
555 FALSE, /* partial_inplace */
557 0xffffffff, /* dst_mask */
558 FALSE), /* pcrel_offset */
560 /* Like R_PPC_REL24, but uses the value of the symbol within the
561 object rather than the final value. Normally used for
562 _GLOBAL_OFFSET_TABLE_. */
563 HOWTO (R_PPC_LOCAL24PC, /* type */
565 2, /* size (0 = byte, 1 = short, 2 = long) */
567 TRUE, /* pc_relative */
569 complain_overflow_signed, /* complain_on_overflow */
570 bfd_elf_generic_reloc, /* special_function */
571 "R_PPC_LOCAL24PC", /* name */
572 FALSE, /* partial_inplace */
574 0x3fffffc, /* dst_mask */
575 TRUE), /* pcrel_offset */
577 /* Like R_PPC_ADDR32, but may be unaligned. */
578 HOWTO (R_PPC_UADDR32, /* type */
580 2, /* size (0 = byte, 1 = short, 2 = long) */
582 FALSE, /* pc_relative */
584 complain_overflow_dont, /* complain_on_overflow */
585 bfd_elf_generic_reloc, /* special_function */
586 "R_PPC_UADDR32", /* name */
587 FALSE, /* partial_inplace */
589 0xffffffff, /* dst_mask */
590 FALSE), /* pcrel_offset */
592 /* Like R_PPC_ADDR16, but may be unaligned. */
593 HOWTO (R_PPC_UADDR16, /* type */
595 1, /* size (0 = byte, 1 = short, 2 = long) */
597 FALSE, /* pc_relative */
599 complain_overflow_bitfield, /* complain_on_overflow */
600 bfd_elf_generic_reloc, /* special_function */
601 "R_PPC_UADDR16", /* name */
602 FALSE, /* partial_inplace */
604 0xffff, /* dst_mask */
605 FALSE), /* pcrel_offset */
607 /* 32-bit PC relative */
608 HOWTO (R_PPC_REL32, /* type */
610 2, /* size (0 = byte, 1 = short, 2 = long) */
612 TRUE, /* pc_relative */
614 complain_overflow_dont, /* complain_on_overflow */
615 bfd_elf_generic_reloc, /* special_function */
616 "R_PPC_REL32", /* name */
617 FALSE, /* partial_inplace */
619 0xffffffff, /* dst_mask */
620 TRUE), /* pcrel_offset */
622 /* 32-bit relocation to the symbol's procedure linkage table.
623 FIXME: not supported. */
624 HOWTO (R_PPC_PLT32, /* type */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
628 FALSE, /* pc_relative */
630 complain_overflow_dont, /* complain_on_overflow */
631 ppc_elf_unhandled_reloc, /* special_function */
632 "R_PPC_PLT32", /* name */
633 FALSE, /* partial_inplace */
636 FALSE), /* pcrel_offset */
638 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
639 FIXME: not supported. */
640 HOWTO (R_PPC_PLTREL32, /* type */
642 2, /* size (0 = byte, 1 = short, 2 = long) */
644 TRUE, /* pc_relative */
646 complain_overflow_dont, /* complain_on_overflow */
647 ppc_elf_unhandled_reloc, /* special_function */
648 "R_PPC_PLTREL32", /* name */
649 FALSE, /* partial_inplace */
652 TRUE), /* pcrel_offset */
654 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
656 HOWTO (R_PPC_PLT16_LO, /* type */
658 1, /* size (0 = byte, 1 = short, 2 = long) */
660 FALSE, /* pc_relative */
662 complain_overflow_dont, /* complain_on_overflow */
663 ppc_elf_unhandled_reloc, /* special_function */
664 "R_PPC_PLT16_LO", /* name */
665 FALSE, /* partial_inplace */
667 0xffff, /* dst_mask */
668 FALSE), /* pcrel_offset */
670 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
672 HOWTO (R_PPC_PLT16_HI, /* type */
674 1, /* size (0 = byte, 1 = short, 2 = long) */
676 FALSE, /* pc_relative */
678 complain_overflow_dont, /* complain_on_overflow */
679 ppc_elf_unhandled_reloc, /* special_function */
680 "R_PPC_PLT16_HI", /* name */
681 FALSE, /* partial_inplace */
683 0xffff, /* dst_mask */
684 FALSE), /* pcrel_offset */
686 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
688 HOWTO (R_PPC_PLT16_HA, /* type */
690 1, /* size (0 = byte, 1 = short, 2 = long) */
692 FALSE, /* pc_relative */
694 complain_overflow_dont, /* complain_on_overflow */
695 ppc_elf_unhandled_reloc, /* special_function */
696 "R_PPC_PLT16_HA", /* name */
697 FALSE, /* partial_inplace */
699 0xffff, /* dst_mask */
700 FALSE), /* pcrel_offset */
702 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
704 HOWTO (R_PPC_SDAREL16, /* type */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
708 FALSE, /* pc_relative */
710 complain_overflow_signed, /* complain_on_overflow */
711 ppc_elf_unhandled_reloc, /* special_function */
712 "R_PPC_SDAREL16", /* name */
713 FALSE, /* partial_inplace */
715 0xffff, /* dst_mask */
716 FALSE), /* pcrel_offset */
718 /* 16-bit section relative relocation. */
719 HOWTO (R_PPC_SECTOFF, /* type */
721 1, /* size (0 = byte, 1 = short, 2 = long) */
723 FALSE, /* pc_relative */
725 complain_overflow_signed, /* complain_on_overflow */
726 ppc_elf_unhandled_reloc, /* special_function */
727 "R_PPC_SECTOFF", /* name */
728 FALSE, /* partial_inplace */
730 0xffff, /* dst_mask */
731 FALSE), /* pcrel_offset */
733 /* 16-bit lower half section relative relocation. */
734 HOWTO (R_PPC_SECTOFF_LO, /* type */
736 1, /* size (0 = byte, 1 = short, 2 = long) */
738 FALSE, /* pc_relative */
740 complain_overflow_dont, /* complain_on_overflow */
741 ppc_elf_unhandled_reloc, /* special_function */
742 "R_PPC_SECTOFF_LO", /* name */
743 FALSE, /* partial_inplace */
745 0xffff, /* dst_mask */
746 FALSE), /* pcrel_offset */
748 /* 16-bit upper half section relative relocation. */
749 HOWTO (R_PPC_SECTOFF_HI, /* type */
751 1, /* size (0 = byte, 1 = short, 2 = long) */
753 FALSE, /* pc_relative */
755 complain_overflow_dont, /* complain_on_overflow */
756 ppc_elf_unhandled_reloc, /* special_function */
757 "R_PPC_SECTOFF_HI", /* name */
758 FALSE, /* partial_inplace */
760 0xffff, /* dst_mask */
761 FALSE), /* pcrel_offset */
763 /* 16-bit upper half adjusted section relative relocation. */
764 HOWTO (R_PPC_SECTOFF_HA, /* type */
766 1, /* size (0 = byte, 1 = short, 2 = long) */
768 FALSE, /* pc_relative */
770 complain_overflow_dont, /* complain_on_overflow */
771 ppc_elf_unhandled_reloc, /* special_function */
772 "R_PPC_SECTOFF_HA", /* name */
773 FALSE, /* partial_inplace */
775 0xffff, /* dst_mask */
776 FALSE), /* pcrel_offset */
778 /* Marker relocs for TLS. */
781 2, /* size (0 = byte, 1 = short, 2 = long) */
783 FALSE, /* pc_relative */
785 complain_overflow_dont, /* complain_on_overflow */
786 bfd_elf_generic_reloc, /* special_function */
787 "R_PPC_TLS", /* name */
788 FALSE, /* partial_inplace */
791 FALSE), /* pcrel_offset */
795 2, /* size (0 = byte, 1 = short, 2 = long) */
797 FALSE, /* pc_relative */
799 complain_overflow_dont, /* complain_on_overflow */
800 bfd_elf_generic_reloc, /* special_function */
801 "R_PPC_TLSGD", /* name */
802 FALSE, /* partial_inplace */
805 FALSE), /* pcrel_offset */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
811 FALSE, /* pc_relative */
813 complain_overflow_dont, /* complain_on_overflow */
814 bfd_elf_generic_reloc, /* special_function */
815 "R_PPC_TLSLD", /* name */
816 FALSE, /* partial_inplace */
819 FALSE), /* pcrel_offset */
821 /* Computes the load module index of the load module that contains the
822 definition of its TLS sym. */
823 HOWTO (R_PPC_DTPMOD32,
825 2, /* size (0 = byte, 1 = short, 2 = long) */
827 FALSE, /* pc_relative */
829 complain_overflow_dont, /* complain_on_overflow */
830 ppc_elf_unhandled_reloc, /* special_function */
831 "R_PPC_DTPMOD32", /* name */
832 FALSE, /* partial_inplace */
834 0xffffffff, /* dst_mask */
835 FALSE), /* pcrel_offset */
837 /* Computes a dtv-relative displacement, the difference between the value
838 of sym+add and the base address of the thread-local storage block that
839 contains the definition of sym, minus 0x8000. */
840 HOWTO (R_PPC_DTPREL32,
842 2, /* size (0 = byte, 1 = short, 2 = long) */
844 FALSE, /* pc_relative */
846 complain_overflow_dont, /* complain_on_overflow */
847 ppc_elf_unhandled_reloc, /* special_function */
848 "R_PPC_DTPREL32", /* name */
849 FALSE, /* partial_inplace */
851 0xffffffff, /* dst_mask */
852 FALSE), /* pcrel_offset */
854 /* A 16 bit dtprel reloc. */
855 HOWTO (R_PPC_DTPREL16,
857 1, /* size (0 = byte, 1 = short, 2 = long) */
859 FALSE, /* pc_relative */
861 complain_overflow_signed, /* complain_on_overflow */
862 ppc_elf_unhandled_reloc, /* special_function */
863 "R_PPC_DTPREL16", /* name */
864 FALSE, /* partial_inplace */
866 0xffff, /* dst_mask */
867 FALSE), /* pcrel_offset */
869 /* Like DTPREL16, but no overflow. */
870 HOWTO (R_PPC_DTPREL16_LO,
872 1, /* size (0 = byte, 1 = short, 2 = long) */
874 FALSE, /* pc_relative */
876 complain_overflow_dont, /* complain_on_overflow */
877 ppc_elf_unhandled_reloc, /* special_function */
878 "R_PPC_DTPREL16_LO", /* name */
879 FALSE, /* partial_inplace */
881 0xffff, /* dst_mask */
882 FALSE), /* pcrel_offset */
884 /* Like DTPREL16_LO, but next higher group of 16 bits. */
885 HOWTO (R_PPC_DTPREL16_HI,
887 1, /* size (0 = byte, 1 = short, 2 = long) */
889 FALSE, /* pc_relative */
891 complain_overflow_dont, /* complain_on_overflow */
892 ppc_elf_unhandled_reloc, /* special_function */
893 "R_PPC_DTPREL16_HI", /* name */
894 FALSE, /* partial_inplace */
896 0xffff, /* dst_mask */
897 FALSE), /* pcrel_offset */
899 /* Like DTPREL16_HI, but adjust for low 16 bits. */
900 HOWTO (R_PPC_DTPREL16_HA,
902 1, /* size (0 = byte, 1 = short, 2 = long) */
904 FALSE, /* pc_relative */
906 complain_overflow_dont, /* complain_on_overflow */
907 ppc_elf_unhandled_reloc, /* special_function */
908 "R_PPC_DTPREL16_HA", /* name */
909 FALSE, /* partial_inplace */
911 0xffff, /* dst_mask */
912 FALSE), /* pcrel_offset */
914 /* Computes a tp-relative displacement, the difference between the value of
915 sym+add and the value of the thread pointer (r13). */
916 HOWTO (R_PPC_TPREL32,
918 2, /* size (0 = byte, 1 = short, 2 = long) */
920 FALSE, /* pc_relative */
922 complain_overflow_dont, /* complain_on_overflow */
923 ppc_elf_unhandled_reloc, /* special_function */
924 "R_PPC_TPREL32", /* name */
925 FALSE, /* partial_inplace */
927 0xffffffff, /* dst_mask */
928 FALSE), /* pcrel_offset */
930 /* A 16 bit tprel reloc. */
931 HOWTO (R_PPC_TPREL16,
933 1, /* size (0 = byte, 1 = short, 2 = long) */
935 FALSE, /* pc_relative */
937 complain_overflow_signed, /* complain_on_overflow */
938 ppc_elf_unhandled_reloc, /* special_function */
939 "R_PPC_TPREL16", /* name */
940 FALSE, /* partial_inplace */
942 0xffff, /* dst_mask */
943 FALSE), /* pcrel_offset */
945 /* Like TPREL16, but no overflow. */
946 HOWTO (R_PPC_TPREL16_LO,
948 1, /* size (0 = byte, 1 = short, 2 = long) */
950 FALSE, /* pc_relative */
952 complain_overflow_dont, /* complain_on_overflow */
953 ppc_elf_unhandled_reloc, /* special_function */
954 "R_PPC_TPREL16_LO", /* name */
955 FALSE, /* partial_inplace */
957 0xffff, /* dst_mask */
958 FALSE), /* pcrel_offset */
960 /* Like TPREL16_LO, but next higher group of 16 bits. */
961 HOWTO (R_PPC_TPREL16_HI,
963 1, /* size (0 = byte, 1 = short, 2 = long) */
965 FALSE, /* pc_relative */
967 complain_overflow_dont, /* complain_on_overflow */
968 ppc_elf_unhandled_reloc, /* special_function */
969 "R_PPC_TPREL16_HI", /* name */
970 FALSE, /* partial_inplace */
972 0xffff, /* dst_mask */
973 FALSE), /* pcrel_offset */
975 /* Like TPREL16_HI, but adjust for low 16 bits. */
976 HOWTO (R_PPC_TPREL16_HA,
978 1, /* size (0 = byte, 1 = short, 2 = long) */
980 FALSE, /* pc_relative */
982 complain_overflow_dont, /* complain_on_overflow */
983 ppc_elf_unhandled_reloc, /* special_function */
984 "R_PPC_TPREL16_HA", /* name */
985 FALSE, /* partial_inplace */
987 0xffff, /* dst_mask */
988 FALSE), /* pcrel_offset */
990 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
991 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
992 to the first entry. */
993 HOWTO (R_PPC_GOT_TLSGD16,
995 1, /* size (0 = byte, 1 = short, 2 = long) */
997 FALSE, /* pc_relative */
999 complain_overflow_signed, /* complain_on_overflow */
1000 ppc_elf_unhandled_reloc, /* special_function */
1001 "R_PPC_GOT_TLSGD16", /* name */
1002 FALSE, /* partial_inplace */
1004 0xffff, /* dst_mask */
1005 FALSE), /* pcrel_offset */
1007 /* Like GOT_TLSGD16, but no overflow. */
1008 HOWTO (R_PPC_GOT_TLSGD16_LO,
1010 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 FALSE, /* pc_relative */
1014 complain_overflow_dont, /* complain_on_overflow */
1015 ppc_elf_unhandled_reloc, /* special_function */
1016 "R_PPC_GOT_TLSGD16_LO", /* name */
1017 FALSE, /* partial_inplace */
1019 0xffff, /* dst_mask */
1020 FALSE), /* pcrel_offset */
1022 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1023 HOWTO (R_PPC_GOT_TLSGD16_HI,
1024 16, /* rightshift */
1025 1, /* size (0 = byte, 1 = short, 2 = long) */
1027 FALSE, /* pc_relative */
1029 complain_overflow_dont, /* complain_on_overflow */
1030 ppc_elf_unhandled_reloc, /* special_function */
1031 "R_PPC_GOT_TLSGD16_HI", /* name */
1032 FALSE, /* partial_inplace */
1034 0xffff, /* dst_mask */
1035 FALSE), /* pcrel_offset */
1037 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1038 HOWTO (R_PPC_GOT_TLSGD16_HA,
1039 16, /* rightshift */
1040 1, /* size (0 = byte, 1 = short, 2 = long) */
1042 FALSE, /* pc_relative */
1044 complain_overflow_dont, /* complain_on_overflow */
1045 ppc_elf_unhandled_reloc, /* special_function */
1046 "R_PPC_GOT_TLSGD16_HA", /* name */
1047 FALSE, /* partial_inplace */
1049 0xffff, /* dst_mask */
1050 FALSE), /* pcrel_offset */
1052 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1053 with values (sym+add)@dtpmod and zero, and computes the offset to the
1055 HOWTO (R_PPC_GOT_TLSLD16,
1057 1, /* size (0 = byte, 1 = short, 2 = long) */
1059 FALSE, /* pc_relative */
1061 complain_overflow_signed, /* complain_on_overflow */
1062 ppc_elf_unhandled_reloc, /* special_function */
1063 "R_PPC_GOT_TLSLD16", /* name */
1064 FALSE, /* partial_inplace */
1066 0xffff, /* dst_mask */
1067 FALSE), /* pcrel_offset */
1069 /* Like GOT_TLSLD16, but no overflow. */
1070 HOWTO (R_PPC_GOT_TLSLD16_LO,
1072 1, /* size (0 = byte, 1 = short, 2 = long) */
1074 FALSE, /* pc_relative */
1076 complain_overflow_dont, /* complain_on_overflow */
1077 ppc_elf_unhandled_reloc, /* special_function */
1078 "R_PPC_GOT_TLSLD16_LO", /* name */
1079 FALSE, /* partial_inplace */
1081 0xffff, /* dst_mask */
1082 FALSE), /* pcrel_offset */
1084 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1085 HOWTO (R_PPC_GOT_TLSLD16_HI,
1086 16, /* rightshift */
1087 1, /* size (0 = byte, 1 = short, 2 = long) */
1089 FALSE, /* pc_relative */
1091 complain_overflow_dont, /* complain_on_overflow */
1092 ppc_elf_unhandled_reloc, /* special_function */
1093 "R_PPC_GOT_TLSLD16_HI", /* name */
1094 FALSE, /* partial_inplace */
1096 0xffff, /* dst_mask */
1097 FALSE), /* pcrel_offset */
1099 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1100 HOWTO (R_PPC_GOT_TLSLD16_HA,
1101 16, /* rightshift */
1102 1, /* size (0 = byte, 1 = short, 2 = long) */
1104 FALSE, /* pc_relative */
1106 complain_overflow_dont, /* complain_on_overflow */
1107 ppc_elf_unhandled_reloc, /* special_function */
1108 "R_PPC_GOT_TLSLD16_HA", /* name */
1109 FALSE, /* partial_inplace */
1111 0xffff, /* dst_mask */
1112 FALSE), /* pcrel_offset */
1114 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1115 the offset to the entry. */
1116 HOWTO (R_PPC_GOT_DTPREL16,
1118 1, /* size (0 = byte, 1 = short, 2 = long) */
1120 FALSE, /* pc_relative */
1122 complain_overflow_signed, /* complain_on_overflow */
1123 ppc_elf_unhandled_reloc, /* special_function */
1124 "R_PPC_GOT_DTPREL16", /* name */
1125 FALSE, /* partial_inplace */
1127 0xffff, /* dst_mask */
1128 FALSE), /* pcrel_offset */
1130 /* Like GOT_DTPREL16, but no overflow. */
1131 HOWTO (R_PPC_GOT_DTPREL16_LO,
1133 1, /* size (0 = byte, 1 = short, 2 = long) */
1135 FALSE, /* pc_relative */
1137 complain_overflow_dont, /* complain_on_overflow */
1138 ppc_elf_unhandled_reloc, /* special_function */
1139 "R_PPC_GOT_DTPREL16_LO", /* name */
1140 FALSE, /* partial_inplace */
1142 0xffff, /* dst_mask */
1143 FALSE), /* pcrel_offset */
1145 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1146 HOWTO (R_PPC_GOT_DTPREL16_HI,
1147 16, /* rightshift */
1148 1, /* size (0 = byte, 1 = short, 2 = long) */
1150 FALSE, /* pc_relative */
1152 complain_overflow_dont, /* complain_on_overflow */
1153 ppc_elf_unhandled_reloc, /* special_function */
1154 "R_PPC_GOT_DTPREL16_HI", /* name */
1155 FALSE, /* partial_inplace */
1157 0xffff, /* dst_mask */
1158 FALSE), /* pcrel_offset */
1160 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1161 HOWTO (R_PPC_GOT_DTPREL16_HA,
1162 16, /* rightshift */
1163 1, /* size (0 = byte, 1 = short, 2 = long) */
1165 FALSE, /* pc_relative */
1167 complain_overflow_dont, /* complain_on_overflow */
1168 ppc_elf_unhandled_reloc, /* special_function */
1169 "R_PPC_GOT_DTPREL16_HA", /* name */
1170 FALSE, /* partial_inplace */
1172 0xffff, /* dst_mask */
1173 FALSE), /* pcrel_offset */
1175 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1176 offset to the entry. */
1177 HOWTO (R_PPC_GOT_TPREL16,
1179 1, /* size (0 = byte, 1 = short, 2 = long) */
1181 FALSE, /* pc_relative */
1183 complain_overflow_signed, /* complain_on_overflow */
1184 ppc_elf_unhandled_reloc, /* special_function */
1185 "R_PPC_GOT_TPREL16", /* name */
1186 FALSE, /* partial_inplace */
1188 0xffff, /* dst_mask */
1189 FALSE), /* pcrel_offset */
1191 /* Like GOT_TPREL16, but no overflow. */
1192 HOWTO (R_PPC_GOT_TPREL16_LO,
1194 1, /* size (0 = byte, 1 = short, 2 = long) */
1196 FALSE, /* pc_relative */
1198 complain_overflow_dont, /* complain_on_overflow */
1199 ppc_elf_unhandled_reloc, /* special_function */
1200 "R_PPC_GOT_TPREL16_LO", /* name */
1201 FALSE, /* partial_inplace */
1203 0xffff, /* dst_mask */
1204 FALSE), /* pcrel_offset */
1206 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1207 HOWTO (R_PPC_GOT_TPREL16_HI,
1208 16, /* rightshift */
1209 1, /* size (0 = byte, 1 = short, 2 = long) */
1211 FALSE, /* pc_relative */
1213 complain_overflow_dont, /* complain_on_overflow */
1214 ppc_elf_unhandled_reloc, /* special_function */
1215 "R_PPC_GOT_TPREL16_HI", /* name */
1216 FALSE, /* partial_inplace */
1218 0xffff, /* dst_mask */
1219 FALSE), /* pcrel_offset */
1221 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1222 HOWTO (R_PPC_GOT_TPREL16_HA,
1223 16, /* rightshift */
1224 1, /* size (0 = byte, 1 = short, 2 = long) */
1226 FALSE, /* pc_relative */
1228 complain_overflow_dont, /* complain_on_overflow */
1229 ppc_elf_unhandled_reloc, /* special_function */
1230 "R_PPC_GOT_TPREL16_HA", /* name */
1231 FALSE, /* partial_inplace */
1233 0xffff, /* dst_mask */
1234 FALSE), /* pcrel_offset */
1236 /* The remaining relocs are from the Embedded ELF ABI, and are not
1237 in the SVR4 ELF ABI. */
1239 /* 32 bit value resulting from the addend minus the symbol. */
1240 HOWTO (R_PPC_EMB_NADDR32, /* type */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1244 FALSE, /* pc_relative */
1246 complain_overflow_dont, /* complain_on_overflow */
1247 ppc_elf_unhandled_reloc, /* special_function */
1248 "R_PPC_EMB_NADDR32", /* name */
1249 FALSE, /* partial_inplace */
1251 0xffffffff, /* dst_mask */
1252 FALSE), /* pcrel_offset */
1254 /* 16 bit value resulting from the addend minus the symbol. */
1255 HOWTO (R_PPC_EMB_NADDR16, /* type */
1257 1, /* size (0 = byte, 1 = short, 2 = long) */
1259 FALSE, /* pc_relative */
1261 complain_overflow_signed, /* complain_on_overflow */
1262 ppc_elf_unhandled_reloc, /* special_function */
1263 "R_PPC_EMB_NADDR16", /* name */
1264 FALSE, /* partial_inplace */
1266 0xffff, /* dst_mask */
1267 FALSE), /* pcrel_offset */
1269 /* 16 bit value resulting from the addend minus the symbol. */
1270 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1272 1, /* size (0 = byte, 1 = short, 2 = long) */
1274 FALSE, /* pc_relative */
1276 complain_overflow_dont,/* complain_on_overflow */
1277 ppc_elf_unhandled_reloc, /* special_function */
1278 "R_PPC_EMB_ADDR16_LO", /* name */
1279 FALSE, /* partial_inplace */
1281 0xffff, /* dst_mask */
1282 FALSE), /* pcrel_offset */
1284 /* The high order 16 bits of the addend minus the symbol. */
1285 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1286 16, /* rightshift */
1287 1, /* size (0 = byte, 1 = short, 2 = long) */
1289 FALSE, /* pc_relative */
1291 complain_overflow_dont, /* complain_on_overflow */
1292 ppc_elf_unhandled_reloc, /* special_function */
1293 "R_PPC_EMB_NADDR16_HI", /* name */
1294 FALSE, /* partial_inplace */
1296 0xffff, /* dst_mask */
1297 FALSE), /* pcrel_offset */
1299 /* The high order 16 bits of the result of the addend minus the address,
1300 plus 1 if the contents of the low 16 bits, treated as a signed number,
1302 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1303 16, /* rightshift */
1304 1, /* size (0 = byte, 1 = short, 2 = long) */
1306 FALSE, /* pc_relative */
1308 complain_overflow_dont, /* complain_on_overflow */
1309 ppc_elf_unhandled_reloc, /* special_function */
1310 "R_PPC_EMB_NADDR16_HA", /* name */
1311 FALSE, /* partial_inplace */
1313 0xffff, /* dst_mask */
1314 FALSE), /* pcrel_offset */
1316 /* 16 bit value resulting from allocating a 4 byte word to hold an
1317 address in the .sdata section, and returning the offset from
1318 _SDA_BASE_ for that relocation. */
1319 HOWTO (R_PPC_EMB_SDAI16, /* type */
1321 1, /* size (0 = byte, 1 = short, 2 = long) */
1323 FALSE, /* pc_relative */
1325 complain_overflow_signed, /* complain_on_overflow */
1326 ppc_elf_unhandled_reloc, /* special_function */
1327 "R_PPC_EMB_SDAI16", /* name */
1328 FALSE, /* partial_inplace */
1330 0xffff, /* dst_mask */
1331 FALSE), /* pcrel_offset */
1333 /* 16 bit value resulting from allocating a 4 byte word to hold an
1334 address in the .sdata2 section, and returning the offset from
1335 _SDA2_BASE_ for that relocation. */
1336 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1338 1, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE, /* pc_relative */
1342 complain_overflow_signed, /* complain_on_overflow */
1343 ppc_elf_unhandled_reloc, /* special_function */
1344 "R_PPC_EMB_SDA2I16", /* name */
1345 FALSE, /* partial_inplace */
1347 0xffff, /* dst_mask */
1348 FALSE), /* pcrel_offset */
1350 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1351 small data items. */
1352 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1354 1, /* size (0 = byte, 1 = short, 2 = long) */
1356 FALSE, /* pc_relative */
1358 complain_overflow_signed, /* complain_on_overflow */
1359 ppc_elf_unhandled_reloc, /* special_function */
1360 "R_PPC_EMB_SDA2REL", /* name */
1361 FALSE, /* partial_inplace */
1363 0xffff, /* dst_mask */
1364 FALSE), /* pcrel_offset */
1366 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1367 signed offset from the appropriate base, and filling in the register
1368 field with the appropriate register (0, 2, or 13). */
1369 HOWTO (R_PPC_EMB_SDA21, /* type */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE, /* pc_relative */
1375 complain_overflow_signed, /* complain_on_overflow */
1376 ppc_elf_unhandled_reloc, /* special_function */
1377 "R_PPC_EMB_SDA21", /* name */
1378 FALSE, /* partial_inplace */
1380 0xffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1383 /* Relocation not handled: R_PPC_EMB_MRKREF */
1384 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1385 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1386 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1387 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1388 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1390 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1391 in the 16 bit signed offset from the appropriate base, and filling in the
1392 register field with the appropriate register (0, 2, or 13). */
1393 HOWTO (R_PPC_EMB_RELSDA, /* type */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE, /* pc_relative */
1399 complain_overflow_signed, /* complain_on_overflow */
1400 ppc_elf_unhandled_reloc, /* special_function */
1401 "R_PPC_EMB_RELSDA", /* name */
1402 FALSE, /* partial_inplace */
1404 0xffff, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1407 /* A relative 8 bit branch. */
1408 HOWTO (R_PPC_VLE_REL8, /* type */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 TRUE, /* pc_relative */
1414 complain_overflow_signed, /* complain_on_overflow */
1415 bfd_elf_generic_reloc, /* special_function */
1416 "R_PPC_VLE_REL8", /* name */
1417 FALSE, /* partial_inplace */
1419 0xff, /* dst_mask */
1420 TRUE), /* pcrel_offset */
1422 /* A relative 15 bit branch. */
1423 HOWTO (R_PPC_VLE_REL15, /* type */
1425 2, /* size (0 = byte, 1 = short, 2 = long) */
1427 TRUE, /* pc_relative */
1429 complain_overflow_signed, /* complain_on_overflow */
1430 bfd_elf_generic_reloc, /* special_function */
1431 "R_PPC_VLE_REL15", /* name */
1432 FALSE, /* partial_inplace */
1434 0xfffe, /* dst_mask */
1435 TRUE), /* pcrel_offset */
1437 /* A relative 24 bit branch. */
1438 HOWTO (R_PPC_VLE_REL24, /* type */
1440 2, /* size (0 = byte, 1 = short, 2 = long) */
1442 TRUE, /* pc_relative */
1444 complain_overflow_signed, /* complain_on_overflow */
1445 bfd_elf_generic_reloc, /* special_function */
1446 "R_PPC_VLE_REL24", /* name */
1447 FALSE, /* partial_inplace */
1449 0x1fffffe, /* dst_mask */
1450 TRUE), /* pcrel_offset */
1452 /* The 16 LSBS in split16a format. */
1453 HOWTO (R_PPC_VLE_LO16A, /* type */
1455 2, /* size (0 = byte, 1 = short, 2 = long) */
1457 FALSE, /* pc_relative */
1459 complain_overflow_dont, /* complain_on_overflow */
1460 ppc_elf_unhandled_reloc, /* special_function */
1461 "R_PPC_VLE_LO16A", /* name */
1462 FALSE, /* partial_inplace */
1464 0x1f07ff, /* dst_mask */
1465 FALSE), /* pcrel_offset */
1467 /* The 16 LSBS in split16d format. */
1468 HOWTO (R_PPC_VLE_LO16D, /* type */
1470 2, /* size (0 = byte, 1 = short, 2 = long) */
1472 FALSE, /* pc_relative */
1474 complain_overflow_dont, /* complain_on_overflow */
1475 ppc_elf_unhandled_reloc, /* special_function */
1476 "R_PPC_VLE_LO16D", /* name */
1477 FALSE, /* partial_inplace */
1479 0x3e007ff, /* dst_mask */
1480 FALSE), /* pcrel_offset */
1482 /* Bits 16-31 split16a format. */
1483 HOWTO (R_PPC_VLE_HI16A, /* type */
1484 16, /* rightshift */
1485 2, /* size (0 = byte, 1 = short, 2 = long) */
1487 FALSE, /* pc_relative */
1489 complain_overflow_dont, /* complain_on_overflow */
1490 ppc_elf_unhandled_reloc, /* special_function */
1491 "R_PPC_VLE_HI16A", /* name */
1492 FALSE, /* partial_inplace */
1494 0x1f07ff, /* dst_mask */
1495 FALSE), /* pcrel_offset */
1497 /* Bits 16-31 split16d format. */
1498 HOWTO (R_PPC_VLE_HI16D, /* type */
1499 16, /* rightshift */
1500 2, /* size (0 = byte, 1 = short, 2 = long) */
1502 FALSE, /* pc_relative */
1504 complain_overflow_dont, /* complain_on_overflow */
1505 ppc_elf_unhandled_reloc, /* special_function */
1506 "R_PPC_VLE_HI16D", /* name */
1507 FALSE, /* partial_inplace */
1509 0x3e007ff, /* dst_mask */
1510 FALSE), /* pcrel_offset */
1512 /* Bits 16-31 (High Adjusted) in split16a format. */
1513 HOWTO (R_PPC_VLE_HA16A, /* type */
1514 16, /* rightshift */
1515 2, /* size (0 = byte, 1 = short, 2 = long) */
1517 FALSE, /* pc_relative */
1519 complain_overflow_dont, /* complain_on_overflow */
1520 ppc_elf_unhandled_reloc, /* special_function */
1521 "R_PPC_VLE_HA16A", /* name */
1522 FALSE, /* partial_inplace */
1524 0x1f07ff, /* dst_mask */
1525 FALSE), /* pcrel_offset */
1527 /* Bits 16-31 (High Adjusted) in split16d format. */
1528 HOWTO (R_PPC_VLE_HA16D, /* type */
1529 16, /* rightshift */
1530 2, /* size (0 = byte, 1 = short, 2 = long) */
1532 FALSE, /* pc_relative */
1534 complain_overflow_dont, /* complain_on_overflow */
1535 ppc_elf_unhandled_reloc, /* special_function */
1536 "R_PPC_VLE_HA16D", /* name */
1537 FALSE, /* partial_inplace */
1539 0x3e007ff, /* dst_mask */
1540 FALSE), /* pcrel_offset */
1542 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1543 instructions. If the register base is 0 then the linker changes
1544 the e_add16i to an e_li instruction. */
1545 HOWTO (R_PPC_VLE_SDA21, /* type */
1547 2, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE, /* pc_relative */
1551 complain_overflow_signed, /* complain_on_overflow */
1552 ppc_elf_unhandled_reloc, /* special_function */
1553 "R_PPC_VLE_SDA21", /* name */
1554 FALSE, /* partial_inplace */
1556 0xffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1559 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1560 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1562 2, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE, /* pc_relative */
1566 complain_overflow_dont, /* complain_on_overflow */
1567 ppc_elf_unhandled_reloc, /* special_function */
1568 "R_PPC_VLE_SDA21_LO", /* name */
1569 FALSE, /* partial_inplace */
1571 0xffff, /* dst_mask */
1572 FALSE), /* pcrel_offset */
1574 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1575 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1577 2, /* size (0 = byte, 1 = short, 2 = long) */
1579 FALSE, /* pc_relative */
1581 complain_overflow_dont, /* complain_on_overflow */
1582 ppc_elf_unhandled_reloc, /* special_function */
1583 "R_PPC_VLE_SDAREL_LO16A", /* name */
1584 FALSE, /* partial_inplace */
1586 0x1f07ff, /* dst_mask */
1587 FALSE), /* pcrel_offset */
1589 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1590 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1592 2, /* size (0 = byte, 1 = short, 2 = long) */
1594 FALSE, /* pc_relative */
1596 complain_overflow_dont, /* complain_on_overflow */
1597 ppc_elf_unhandled_reloc, /* special_function */
1598 "R_PPC_VLE_SDAREL_LO16D", /* name */
1599 FALSE, /* partial_inplace */
1601 0x3e007ff, /* dst_mask */
1602 FALSE), /* pcrel_offset */
1604 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1605 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1606 16, /* rightshift */
1607 2, /* size (0 = byte, 1 = short, 2 = long) */
1609 FALSE, /* pc_relative */
1611 complain_overflow_dont, /* complain_on_overflow */
1612 ppc_elf_unhandled_reloc, /* special_function */
1613 "R_PPC_VLE_SDAREL_HI16A", /* name */
1614 FALSE, /* partial_inplace */
1616 0x1f07ff, /* dst_mask */
1617 FALSE), /* pcrel_offset */
1619 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1620 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1621 16, /* rightshift */
1622 2, /* size (0 = byte, 1 = short, 2 = long) */
1624 FALSE, /* pc_relative */
1626 complain_overflow_dont, /* complain_on_overflow */
1627 ppc_elf_unhandled_reloc, /* special_function */
1628 "R_PPC_VLE_SDAREL_HI16D", /* name */
1629 FALSE, /* partial_inplace */
1631 0x3e007ff, /* dst_mask */
1632 FALSE), /* pcrel_offset */
1634 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1635 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1636 16, /* rightshift */
1637 2, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE, /* pc_relative */
1641 complain_overflow_dont, /* complain_on_overflow */
1642 ppc_elf_unhandled_reloc, /* special_function */
1643 "R_PPC_VLE_SDAREL_HA16A", /* name */
1644 FALSE, /* partial_inplace */
1646 0x1f07ff, /* dst_mask */
1647 FALSE), /* pcrel_offset */
1649 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1650 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1651 16, /* rightshift */
1652 2, /* size (0 = byte, 1 = short, 2 = long) */
1654 FALSE, /* pc_relative */
1656 complain_overflow_dont, /* complain_on_overflow */
1657 ppc_elf_unhandled_reloc, /* special_function */
1658 "R_PPC_VLE_SDAREL_HA16D", /* name */
1659 FALSE, /* partial_inplace */
1661 0x3e007ff, /* dst_mask */
1662 FALSE), /* pcrel_offset */
1664 /* e_li split20 format. */
1665 HOWTO (R_PPC_VLE_ADDR20, /* type */
1666 16, /* rightshift */
1667 2, /* size (0 = byte, 1 = short, 2 = long) */
1669 FALSE, /* pc_relative */
1671 complain_overflow_dont, /* complain_on_overflow */
1672 bfd_elf_generic_reloc, /* special_function */
1673 "R_PPC_VLE_ADDR20", /* name */
1674 FALSE, /* partial_inplace */
1676 0x1f07ff, /* dst_mask */
1677 FALSE), /* pcrel_offset */
1679 HOWTO (R_PPC_IRELATIVE, /* type */
1681 2, /* size (0 = byte, 1 = short, 2 = long) */
1683 FALSE, /* pc_relative */
1685 complain_overflow_dont, /* complain_on_overflow */
1686 ppc_elf_unhandled_reloc, /* special_function */
1687 "R_PPC_IRELATIVE", /* name */
1688 FALSE, /* partial_inplace */
1690 0xffffffff, /* dst_mask */
1691 FALSE), /* pcrel_offset */
1693 /* A 16 bit relative relocation. */
1694 HOWTO (R_PPC_REL16, /* type */
1696 1, /* size (0 = byte, 1 = short, 2 = long) */
1698 TRUE, /* pc_relative */
1700 complain_overflow_signed, /* complain_on_overflow */
1701 bfd_elf_generic_reloc, /* special_function */
1702 "R_PPC_REL16", /* name */
1703 FALSE, /* partial_inplace */
1705 0xffff, /* dst_mask */
1706 TRUE), /* pcrel_offset */
1708 /* A 16 bit relative relocation without overflow. */
1709 HOWTO (R_PPC_REL16_LO, /* type */
1711 1, /* size (0 = byte, 1 = short, 2 = long) */
1713 TRUE, /* pc_relative */
1715 complain_overflow_dont,/* complain_on_overflow */
1716 bfd_elf_generic_reloc, /* special_function */
1717 "R_PPC_REL16_LO", /* name */
1718 FALSE, /* partial_inplace */
1720 0xffff, /* dst_mask */
1721 TRUE), /* pcrel_offset */
1723 /* The high order 16 bits of a relative address. */
1724 HOWTO (R_PPC_REL16_HI, /* type */
1725 16, /* rightshift */
1726 1, /* size (0 = byte, 1 = short, 2 = long) */
1728 TRUE, /* pc_relative */
1730 complain_overflow_dont, /* complain_on_overflow */
1731 bfd_elf_generic_reloc, /* special_function */
1732 "R_PPC_REL16_HI", /* name */
1733 FALSE, /* partial_inplace */
1735 0xffff, /* dst_mask */
1736 TRUE), /* pcrel_offset */
1738 /* The high order 16 bits of a relative address, plus 1 if the contents of
1739 the low 16 bits, treated as a signed number, is negative. */
1740 HOWTO (R_PPC_REL16_HA, /* type */
1741 16, /* rightshift */
1742 1, /* size (0 = byte, 1 = short, 2 = long) */
1744 TRUE, /* pc_relative */
1746 complain_overflow_dont, /* complain_on_overflow */
1747 ppc_elf_addr16_ha_reloc, /* special_function */
1748 "R_PPC_REL16_HA", /* name */
1749 FALSE, /* partial_inplace */
1751 0xffff, /* dst_mask */
1752 TRUE), /* pcrel_offset */
1754 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1755 HOWTO (R_PPC_REL16DX_HA, /* type */
1756 16, /* rightshift */
1757 2, /* size (0 = byte, 1 = short, 2 = long) */
1759 TRUE, /* pc_relative */
1761 complain_overflow_signed, /* complain_on_overflow */
1762 ppc_elf_addr16_ha_reloc, /* special_function */
1763 "R_PPC_REL16DX_HA", /* name */
1764 FALSE, /* partial_inplace */
1766 0x1fffc1, /* dst_mask */
1767 TRUE), /* pcrel_offset */
1769 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1770 HOWTO (R_PPC_16DX_HA, /* type */
1771 16, /* rightshift */
1772 2, /* size (0 = byte, 1 = short, 2 = long) */
1774 FALSE, /* pc_relative */
1776 complain_overflow_signed, /* complain_on_overflow */
1777 ppc_elf_addr16_ha_reloc, /* special_function */
1778 "R_PPC_16DX_HA", /* name */
1779 FALSE, /* partial_inplace */
1781 0x1fffc1, /* dst_mask */
1782 FALSE), /* pcrel_offset */
1784 /* GNU extension to record C++ vtable hierarchy. */
1785 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1787 0, /* size (0 = byte, 1 = short, 2 = long) */
1789 FALSE, /* pc_relative */
1791 complain_overflow_dont, /* complain_on_overflow */
1792 NULL, /* special_function */
1793 "R_PPC_GNU_VTINHERIT", /* name */
1794 FALSE, /* partial_inplace */
1797 FALSE), /* pcrel_offset */
1799 /* GNU extension to record C++ vtable member usage. */
1800 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1802 0, /* size (0 = byte, 1 = short, 2 = long) */
1804 FALSE, /* pc_relative */
1806 complain_overflow_dont, /* complain_on_overflow */
1807 NULL, /* special_function */
1808 "R_PPC_GNU_VTENTRY", /* name */
1809 FALSE, /* partial_inplace */
1812 FALSE), /* pcrel_offset */
1814 /* Phony reloc to handle AIX style TOC entries. */
1815 HOWTO (R_PPC_TOC16, /* type */
1817 1, /* size (0 = byte, 1 = short, 2 = long) */
1819 FALSE, /* pc_relative */
1821 complain_overflow_signed, /* complain_on_overflow */
1822 ppc_elf_unhandled_reloc, /* special_function */
1823 "R_PPC_TOC16", /* name */
1824 FALSE, /* partial_inplace */
1826 0xffff, /* dst_mask */
1827 FALSE), /* pcrel_offset */
1830 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1833 ppc_elf_howto_init (void)
1835 unsigned int i, type;
1838 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1841 type = ppc_elf_howto_raw[i].type;
1842 if (type >= (sizeof (ppc_elf_howto_table)
1843 / sizeof (ppc_elf_howto_table[0])))
1845 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1849 static reloc_howto_type *
1850 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1851 bfd_reloc_code_real_type code)
1853 enum elf_ppc_reloc_type r;
1855 /* Initialize howto table if not already done. */
1856 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1857 ppc_elf_howto_init ();
1864 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1865 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1866 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1867 case BFD_RELOC_PPC64_ADDR16_DS:
1868 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1869 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1870 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1871 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1872 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1873 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1874 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1875 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1876 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1877 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1878 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1879 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1880 case BFD_RELOC_PPC64_GOT16_DS:
1881 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1882 case BFD_RELOC_PPC64_GOT16_LO_DS:
1883 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1884 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1885 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1886 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1887 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1888 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1889 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1890 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1891 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1892 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1893 case BFD_RELOC_PPC64_PLT16_LO_DS:
1894 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1895 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1896 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1897 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1898 case BFD_RELOC_PPC64_SECTOFF_DS:
1899 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1900 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1901 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1902 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1903 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1904 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1905 case BFD_RELOC_PPC64_TOC16_DS:
1906 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1907 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1908 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1909 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1910 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1911 case BFD_RELOC_PPC64_TPREL16_DS:
1912 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1913 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1914 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1915 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1916 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1917 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1918 case BFD_RELOC_PPC64_DTPREL16_DS:
1919 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1920 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1921 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1922 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1923 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1924 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1925 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1926 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1929 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1930 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1933 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1934 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1937 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1938 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1941 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1942 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1943 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1946 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1947 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1948 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1949 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1950 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1951 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1952 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1953 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1954 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1955 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1956 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1957 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1958 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1959 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1960 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1961 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1962 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1963 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1964 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1965 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1966 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1967 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1968 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1969 r = R_PPC_VLE_SDAREL_LO16A;
1971 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1972 r = R_PPC_VLE_SDAREL_LO16D;
1974 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1975 r = R_PPC_VLE_SDAREL_HI16A;
1977 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1978 r = R_PPC_VLE_SDAREL_HI16D;
1980 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1981 r = R_PPC_VLE_SDAREL_HA16A;
1983 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1984 r = R_PPC_VLE_SDAREL_HA16D;
1986 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1987 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1988 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1989 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1990 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
1991 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
1992 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1993 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1996 return ppc_elf_howto_table[r];
1999 static reloc_howto_type *
2000 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2006 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2008 if (ppc_elf_howto_raw[i].name != NULL
2009 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2010 return &ppc_elf_howto_raw[i];
2015 /* Set the howto pointer for a PowerPC ELF reloc. */
2018 ppc_elf_info_to_howto (bfd *abfd,
2020 Elf_Internal_Rela *dst)
2022 unsigned int r_type;
2024 /* Initialize howto table if not already done. */
2025 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2026 ppc_elf_howto_init ();
2028 r_type = ELF32_R_TYPE (dst->r_info);
2029 if (r_type >= R_PPC_max)
2031 /* xgettext:c-format */
2032 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2034 bfd_set_error (bfd_error_bad_value);
2038 cache_ptr->howto = ppc_elf_howto_table[r_type];
2040 /* Just because the above assert didn't trigger doesn't mean that
2041 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2042 if (cache_ptr->howto == NULL)
2044 /* xgettext:c-format */
2045 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2047 bfd_set_error (bfd_error_bad_value);
2055 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2057 static bfd_reloc_status_type
2058 ppc_elf_addr16_ha_reloc (bfd *abfd,
2059 arelent *reloc_entry,
2062 asection *input_section,
2064 char **error_message ATTRIBUTE_UNUSED)
2066 enum elf_ppc_reloc_type r_type;
2068 bfd_size_type octets;
2071 if (output_bfd != NULL)
2073 reloc_entry->address += input_section->output_offset;
2074 return bfd_reloc_ok;
2077 reloc_entry->addend += 0x8000;
2078 r_type = reloc_entry->howto->type;
2079 if (r_type != R_PPC_REL16DX_HA)
2080 return bfd_reloc_continue;
2083 if (!bfd_is_com_section (symbol->section))
2084 value = symbol->value;
2085 value += (reloc_entry->addend
2086 + symbol->section->output_offset
2087 + symbol->section->output_section->vma);
2088 value -= (reloc_entry->address
2089 + input_section->output_offset
2090 + input_section->output_section->vma);
2093 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2094 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2096 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2097 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2098 return bfd_reloc_ok;
2101 static bfd_reloc_status_type
2102 ppc_elf_unhandled_reloc (bfd *abfd,
2103 arelent *reloc_entry,
2106 asection *input_section,
2108 char **error_message)
2110 /* If this is a relocatable link (output_bfd test tells us), just
2111 call the generic function. Any adjustment will be done at final
2113 if (output_bfd != NULL)
2114 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2115 input_section, output_bfd, error_message);
2117 if (error_message != NULL)
2119 static char buf[60];
2120 sprintf (buf, _("generic linker can't handle %s"),
2121 reloc_entry->howto->name);
2122 *error_message = buf;
2124 return bfd_reloc_dangerous;
2127 /* Sections created by the linker. */
2129 typedef struct elf_linker_section
2131 /* Pointer to the bfd section. */
2135 /* Associated bss section name. */
2136 const char *bss_name;
2137 /* Associated symbol name. */
2138 const char *sym_name;
2139 /* Associated symbol. */
2140 struct elf_link_hash_entry *sym;
2141 } elf_linker_section_t;
2143 /* Linked list of allocated pointer entries. This hangs off of the
2144 symbol lists, and provides allows us to return different pointers,
2145 based on different addend's. */
2147 typedef struct elf_linker_section_pointers
2149 /* next allocated pointer for this symbol */
2150 struct elf_linker_section_pointers *next;
2151 /* offset of pointer from beginning of section */
2155 /* which linker section this is */
2156 elf_linker_section_t *lsect;
2157 } elf_linker_section_pointers_t;
2159 struct ppc_elf_obj_tdata
2161 struct elf_obj_tdata elf;
2163 /* A mapping from local symbols to offsets into the various linker
2164 sections added. This is index by the symbol index. */
2165 elf_linker_section_pointers_t **linker_section_pointers;
2167 /* Flags used to auto-detect plt type. */
2168 unsigned int makes_plt_call : 1;
2169 unsigned int has_rel16 : 1;
2172 #define ppc_elf_tdata(bfd) \
2173 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2175 #define elf_local_ptr_offsets(bfd) \
2176 (ppc_elf_tdata (bfd)->linker_section_pointers)
2178 #define is_ppc_elf(bfd) \
2179 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2180 && elf_object_id (bfd) == PPC32_ELF_DATA)
2182 /* Override the generic function because we store some extras. */
2185 ppc_elf_mkobject (bfd *abfd)
2187 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2191 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2194 _bfd_elf_ppc_set_arch (bfd *abfd)
2196 unsigned long mach = 0;
2198 unsigned char *contents;
2200 if (abfd->arch_info->bits_per_word == 32
2201 && bfd_big_endian (abfd))
2204 for (s = abfd->sections; s != NULL; s = s->next)
2205 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2208 mach = bfd_mach_ppc_vle;
2213 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2214 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2216 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2219 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2221 unsigned int val = bfd_get_32 (abfd, contents + i);
2224 case PPC_APUINFO_PMR:
2225 case PPC_APUINFO_RFMCI:
2227 mach = bfd_mach_ppc_titan;
2230 case PPC_APUINFO_ISEL:
2231 case PPC_APUINFO_CACHELCK:
2232 if (mach == bfd_mach_ppc_titan)
2233 mach = bfd_mach_ppc_e500mc;
2236 case PPC_APUINFO_SPE:
2237 case PPC_APUINFO_EFS:
2238 case PPC_APUINFO_BRLOCK:
2239 if (mach != bfd_mach_ppc_vle)
2240 mach = bfd_mach_ppc_e500;
2243 case PPC_APUINFO_VLE:
2244 mach = bfd_mach_ppc_vle;
2255 if (mach != 0 && mach != -1ul)
2257 const bfd_arch_info_type *arch;
2259 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2260 if (arch->mach == mach)
2262 abfd->arch_info = arch;
2269 /* Fix bad default arch selected for a 32 bit input bfd when the
2270 default is 64 bit. Also select arch based on apuinfo. */
2273 ppc_elf_object_p (bfd *abfd)
2275 if (!abfd->arch_info->the_default)
2278 if (abfd->arch_info->bits_per_word == 64)
2280 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2282 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2284 /* Relies on arch after 64 bit default being 32 bit default. */
2285 abfd->arch_info = abfd->arch_info->next;
2286 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2289 return _bfd_elf_ppc_set_arch (abfd);
2292 /* Function to set whether a module needs the -mrelocatable bit set. */
2295 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2297 BFD_ASSERT (!elf_flags_init (abfd)
2298 || elf_elfheader (abfd)->e_flags == flags);
2300 elf_elfheader (abfd)->e_flags = flags;
2301 elf_flags_init (abfd) = TRUE;
2305 /* Support for core dump NOTE sections. */
2308 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2313 switch (note->descsz)
2318 case 268: /* Linux/PPC. */
2320 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2323 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2332 /* Make a ".reg/999" section. */
2333 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2334 size, note->descpos + offset);
2338 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2340 switch (note->descsz)
2345 case 128: /* Linux/PPC elf_prpsinfo. */
2346 elf_tdata (abfd)->core->pid
2347 = bfd_get_32 (abfd, note->descdata + 16);
2348 elf_tdata (abfd)->core->program
2349 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2350 elf_tdata (abfd)->core->command
2351 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2354 /* Note that for some reason, a spurious space is tacked
2355 onto the end of the args in some (at least one anyway)
2356 implementations, so strip it off if it exists. */
2359 char *command = elf_tdata (abfd)->core->command;
2360 int n = strlen (command);
2362 if (0 < n && command[n - 1] == ' ')
2363 command[n - 1] = '\0';
2370 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2382 va_start (ap, note_type);
2383 memset (data, 0, sizeof (data));
2384 strncpy (data + 32, va_arg (ap, const char *), 16);
2385 strncpy (data + 48, va_arg (ap, const char *), 80);
2387 return elfcore_write_note (abfd, buf, bufsiz,
2388 "CORE", note_type, data, sizeof (data));
2399 va_start (ap, note_type);
2400 memset (data, 0, 72);
2401 pid = va_arg (ap, long);
2402 bfd_put_32 (abfd, pid, data + 24);
2403 cursig = va_arg (ap, int);
2404 bfd_put_16 (abfd, cursig, data + 12);
2405 greg = va_arg (ap, const void *);
2406 memcpy (data + 72, greg, 192);
2407 memset (data + 264, 0, 4);
2409 return elfcore_write_note (abfd, buf, bufsiz,
2410 "CORE", note_type, data, sizeof (data));
2416 ppc_elf_lookup_section_flags (char *flag_name)
2419 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2425 /* Return address for Ith PLT stub in section PLT, for relocation REL
2426 or (bfd_vma) -1 if it should not be included. */
2429 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2430 const asection *plt ATTRIBUTE_UNUSED,
2433 return rel->address;
2436 /* Handle a PowerPC specific section when reading an object file. This
2437 is called when bfd_section_from_shdr finds a section with an unknown
2441 ppc_elf_section_from_shdr (bfd *abfd,
2442 Elf_Internal_Shdr *hdr,
2449 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2452 newsect = hdr->bfd_section;
2453 flags = bfd_get_section_flags (abfd, newsect);
2454 if (hdr->sh_flags & SHF_EXCLUDE)
2455 flags |= SEC_EXCLUDE;
2457 if (hdr->sh_type == SHT_ORDERED)
2458 flags |= SEC_SORT_ENTRIES;
2460 bfd_set_section_flags (abfd, newsect, flags);
2464 /* Set up any other section flags and such that may be necessary. */
2467 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2468 Elf_Internal_Shdr *shdr,
2471 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2472 shdr->sh_type = SHT_ORDERED;
2477 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2478 need to bump up the number of section headers. */
2481 ppc_elf_additional_program_headers (bfd *abfd,
2482 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2487 s = bfd_get_section_by_name (abfd, ".sbss2");
2488 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2491 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2492 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2498 /* Modify the segment map for VLE executables. */
2501 ppc_elf_modify_segment_map (bfd *abfd,
2502 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2504 struct elf_segment_map *m;
2506 /* At this point in the link, output sections have already been sorted by
2507 LMA and assigned to segments. All that is left to do is to ensure
2508 there is no mixing of VLE & non-VLE sections in a text segment.
2509 If we find that case, we split the segment.
2510 We maintain the original output section order. */
2512 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2514 struct elf_segment_map *n;
2517 unsigned int p_flags;
2519 if (m->p_type != PT_LOAD || m->count == 0)
2522 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2524 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2526 if ((m->sections[j]->flags & SEC_CODE) != 0)
2529 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2530 p_flags |= PF_PPC_VLE;
2535 while (++j != m->count)
2537 unsigned int p_flags1 = PF_R;
2539 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2541 if ((m->sections[j]->flags & SEC_CODE) != 0)
2544 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2545 p_flags1 |= PF_PPC_VLE;
2546 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2549 p_flags |= p_flags1;
2551 /* If we're splitting a segment which originally contained rw
2552 sections then those sections might now only be in one of the
2553 two parts. So always set p_flags if splitting, even if we
2554 are being called for objcopy with p_flags_valid set. */
2555 if (j != m->count || !m->p_flags_valid)
2557 m->p_flags_valid = 1;
2558 m->p_flags = p_flags;
2563 /* Sections 0..j-1 stay in this (current) segment,
2564 the remainder are put in a new segment.
2565 The scan resumes with the new segment. */
2567 amt = sizeof (struct elf_segment_map);
2568 amt += (m->count - j - 1) * sizeof (asection *);
2569 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2573 n->p_type = PT_LOAD;
2574 n->count = m->count - j;
2575 for (k = 0; k < n->count; ++k)
2576 n->sections[k] = m->sections[j + k];
2578 m->p_size_valid = 0;
2586 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2587 .PPC.EMB.sbss0 a normal section, and not a bss section so
2588 that the linker doesn't crater when trying to make more than
2591 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2593 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2594 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2595 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2596 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2597 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2598 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2599 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2600 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2601 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2602 { NULL, 0, 0, 0, 0 }
2605 /* This is what we want for new plt/got. */
2606 static struct bfd_elf_special_section ppc_alt_plt =
2607 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2609 static const struct bfd_elf_special_section *
2610 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2612 const struct bfd_elf_special_section *ssect;
2614 /* See if this is one of the special sections. */
2615 if (sec->name == NULL)
2618 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2622 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2623 ssect = &ppc_alt_plt;
2627 return _bfd_elf_get_sec_type_attr (abfd, sec);
2630 /* Very simple linked list structure for recording apuinfo values. */
2631 typedef struct apuinfo_list
2633 struct apuinfo_list *next;
2634 unsigned long value;
2638 static apuinfo_list *head;
2639 static bfd_boolean apuinfo_set;
2642 apuinfo_list_init (void)
2645 apuinfo_set = FALSE;
2649 apuinfo_list_add (unsigned long value)
2651 apuinfo_list *entry = head;
2653 while (entry != NULL)
2655 if (entry->value == value)
2657 entry = entry->next;
2660 entry = bfd_malloc (sizeof (* entry));
2664 entry->value = value;
2670 apuinfo_list_length (void)
2672 apuinfo_list *entry;
2673 unsigned long count;
2675 for (entry = head, count = 0;
2677 entry = entry->next)
2683 static inline unsigned long
2684 apuinfo_list_element (unsigned long number)
2686 apuinfo_list * entry;
2690 entry = entry->next)
2693 return entry ? entry->value : 0;
2697 apuinfo_list_finish (void)
2699 apuinfo_list *entry;
2701 for (entry = head; entry;)
2703 apuinfo_list *next = entry->next;
2711 /* Scan the input BFDs and create a linked list of
2712 the APUinfo values that will need to be emitted. */
2715 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2719 char *buffer = NULL;
2720 bfd_size_type largest_input_size = 0;
2722 unsigned long length;
2723 const char *error_message = NULL;
2725 if (link_info == NULL)
2728 apuinfo_list_init ();
2730 /* Read in the input sections contents. */
2731 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2733 unsigned long datum;
2735 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2739 /* xgettext:c-format */
2740 error_message = _("corrupt %s section in %pB");
2741 length = asec->size;
2746 if (largest_input_size < asec->size)
2750 largest_input_size = asec->size;
2751 buffer = bfd_malloc (largest_input_size);
2756 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2757 || (bfd_bread (buffer, length, ibfd) != length))
2759 /* xgettext:c-format */
2760 error_message = _("unable to read in %s section from %pB");
2764 /* Verify the contents of the header. Note - we have to
2765 extract the values this way in order to allow for a
2766 host whose endian-ness is different from the target. */
2767 datum = bfd_get_32 (ibfd, buffer);
2768 if (datum != sizeof APUINFO_LABEL)
2771 datum = bfd_get_32 (ibfd, buffer + 8);
2775 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2778 /* Get the number of bytes used for apuinfo entries. */
2779 datum = bfd_get_32 (ibfd, buffer + 4);
2780 if (datum + 20 != length)
2783 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2784 for (i = 0; i < datum; i += 4)
2785 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2788 error_message = NULL;
2792 /* Compute the size of the output section. */
2793 unsigned num_entries = apuinfo_list_length ();
2795 /* Set the output section size, if it exists. */
2796 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2798 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2801 /* xgettext:c-format */
2802 error_message = _("warning: unable to set size of %s section in %pB");
2811 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
2814 /* Prevent the output section from accumulating the input sections'
2815 contents. We have already stored this in our linked list structure. */
2818 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2819 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2821 bfd_byte *contents ATTRIBUTE_UNUSED)
2823 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2826 /* Finally we can generate the output section. */
2829 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2834 unsigned num_entries;
2835 bfd_size_type length;
2837 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2844 length = asec->size;
2848 buffer = bfd_malloc (length);
2852 (_("failed to allocate space for new APUinfo section"));
2856 /* Create the apuinfo header. */
2857 num_entries = apuinfo_list_length ();
2858 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2859 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2860 bfd_put_32 (abfd, 0x2, buffer + 8);
2861 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2864 for (i = 0; i < num_entries; i++)
2866 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2870 if (length != asec->size)
2871 _bfd_error_handler (_("failed to compute new APUinfo section"));
2873 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2874 _bfd_error_handler (_("failed to install new APUinfo section"));
2878 apuinfo_list_finish ();
2882 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2884 bfd_byte buf[4 * 4];
2886 if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf))
2889 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2890 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2891 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2892 && bfd_get_32 (abfd, buf + 12) == BCTR);
2896 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2898 bfd_vma vma = *(bfd_vma *) ptr;
2899 return ((section->flags & SEC_ALLOC) != 0
2900 && section->vma <= vma
2901 && vma < section->vma + section->size);
2905 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2906 long dynsymcount, asymbol **dynsyms,
2909 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2910 asection *plt, *relplt, *dynamic, *glink;
2911 bfd_vma glink_vma = 0;
2912 bfd_vma resolv_vma = 0;
2916 long count, i, stub_delta;
2923 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2926 if (dynsymcount <= 0)
2929 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2933 plt = bfd_get_section_by_name (abfd, ".plt");
2937 /* Call common code to handle old-style executable PLTs. */
2938 if (elf_section_flags (plt) & SHF_EXECINSTR)
2939 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2940 dynsymcount, dynsyms, ret);
2942 /* If this object was prelinked, the prelinker stored the address
2943 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2944 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2945 if (dynamic != NULL)
2947 bfd_byte *dynbuf, *extdyn, *extdynend;
2949 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2951 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2954 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2955 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2958 extdynend = extdyn + dynamic->size;
2959 for (; extdyn < extdynend; extdyn += extdynsize)
2961 Elf_Internal_Dyn dyn;
2962 (*swap_dyn_in) (abfd, extdyn, &dyn);
2964 if (dyn.d_tag == DT_NULL)
2967 if (dyn.d_tag == DT_PPC_GOT)
2969 unsigned int g_o_t = dyn.d_un.d_val;
2970 asection *got = bfd_get_section_by_name (abfd, ".got");
2972 && bfd_get_section_contents (abfd, got, buf,
2973 g_o_t - got->vma + 4, 4))
2974 glink_vma = bfd_get_32 (abfd, buf);
2981 /* Otherwise we read the first plt entry. */
2984 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2985 glink_vma = bfd_get_32 (abfd, buf);
2991 /* The .glink section usually does not survive the final
2992 link; search for the section (usually .text) where the
2993 glink stubs now reside. */
2994 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2998 /* Determine glink PLT resolver by reading the relative branch
2999 from the first glink stub. */
3000 if (bfd_get_section_contents (abfd, glink, buf,
3001 glink_vma - glink->vma, 4))
3003 unsigned int insn = bfd_get_32 (abfd, buf);
3005 /* The first glink stub may either branch to the resolver ... */
3007 if ((insn & ~0x3fffffc) == 0)
3008 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3010 /* ... or fall through a bunch of NOPs. */
3011 else if ((insn ^ B ^ NOP) == 0)
3013 bfd_get_section_contents (abfd, glink, buf,
3014 glink_vma - glink->vma + i, 4);
3016 if (bfd_get_32 (abfd, buf) != NOP)
3018 resolv_vma = glink_vma + i;
3023 count = relplt->size / sizeof (Elf32_External_Rela);
3024 /* If the stubs are those for -shared/-pie then we might have
3025 multiple stubs for each plt entry. If that is the case then
3026 there is no way to associate stubs with their plt entries short
3027 of figuring out the GOT pointer value used in the stub.
3028 The offsets tested here need to cover all possible values of
3029 GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
3030 stub_off = glink_vma - glink->vma;
3031 for (stub_delta = 16; stub_delta <= 32; stub_delta += 8)
3032 if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta))
3034 if (stub_delta > 32)
3037 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3038 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3041 size = count * sizeof (asymbol);
3042 p = relplt->relocation;
3043 for (i = 0; i < count; i++, p++)
3045 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3047 size += sizeof ("+0x") - 1 + 8;
3050 size += sizeof (asymbol) + sizeof ("__glink");
3053 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3055 s = *ret = bfd_malloc (size);
3059 stub_off = glink_vma - glink->vma;
3060 names = (char *) (s + count + 1 + (resolv_vma != 0));
3061 p = relplt->relocation + count - 1;
3062 for (i = 0; i < count; i++)
3066 stub_off -= stub_delta;
3067 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3069 *s = **p->sym_ptr_ptr;
3070 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3071 we are defining a symbol, ensure one of them is set. */
3072 if ((s->flags & BSF_LOCAL) == 0)
3073 s->flags |= BSF_GLOBAL;
3074 s->flags |= BSF_SYNTHETIC;
3076 s->value = stub_off;
3079 len = strlen ((*p->sym_ptr_ptr)->name);
3080 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3084 memcpy (names, "+0x", sizeof ("+0x") - 1);
3085 names += sizeof ("+0x") - 1;
3086 bfd_sprintf_vma (abfd, names, p->addend);
3087 names += strlen (names);
3089 memcpy (names, "@plt", sizeof ("@plt"));
3090 names += sizeof ("@plt");
3095 /* Add a symbol at the start of the glink branch table. */
3096 memset (s, 0, sizeof *s);
3098 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3100 s->value = glink_vma - glink->vma;
3102 memcpy (names, "__glink", sizeof ("__glink"));
3103 names += sizeof ("__glink");
3109 /* Add a symbol for the glink PLT resolver. */
3110 memset (s, 0, sizeof *s);
3112 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3114 s->value = resolv_vma - glink->vma;
3116 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3117 names += sizeof ("__glink_PLTresolve");
3125 /* The following functions are specific to the ELF linker, while
3126 functions above are used generally. They appear in this file more
3127 or less in the order in which they are called. eg.
3128 ppc_elf_check_relocs is called early in the link process,
3129 ppc_elf_finish_dynamic_sections is one of the last functions
3132 /* Track PLT entries needed for a given symbol. We might need more
3133 than one glink entry per symbol when generating a pic binary. */
3136 struct plt_entry *next;
3138 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3139 This field stores the offset into .got2 used to initialise the
3140 GOT pointer reg. It will always be at least 32768. (Current
3141 gcc always uses an offset of 32768, but ld -r will pack .got2
3142 sections together resulting in larger offsets). */
3145 /* The .got2 section. */
3148 /* PLT refcount or offset. */
3151 bfd_signed_vma refcount;
3155 /* .glink stub offset. */
3156 bfd_vma glink_offset;
3159 /* Of those relocs that might be copied as dynamic relocs, this
3160 function selects those that must be copied when linking a shared
3161 library or PIE, even when the symbol is local. */
3164 must_be_dyn_reloc (struct bfd_link_info *info,
3165 enum elf_ppc_reloc_type r_type)
3170 /* Only relative relocs can be resolved when the object load
3171 address isn't fixed. DTPREL32 is excluded because the
3172 dynamic linker needs to differentiate global dynamic from
3173 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3178 case R_PPC_REL14_BRTAKEN:
3179 case R_PPC_REL14_BRNTAKEN:
3185 case R_PPC_TPREL16_LO:
3186 case R_PPC_TPREL16_HI:
3187 case R_PPC_TPREL16_HA:
3188 /* These relocations are relative but in a shared library the
3189 linker doesn't know the thread pointer base. */
3190 return bfd_link_dll (info);
3194 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3195 copying dynamic variables from a shared lib into an app's dynbss
3196 section, and instead use a dynamic relocation to point into the
3198 #define ELIMINATE_COPY_RELOCS 1
3200 /* Used to track dynamic relocations for local symbols. */
3201 struct ppc_dyn_relocs
3203 struct ppc_dyn_relocs *next;
3205 /* The input section of the reloc. */
3208 /* Total number of relocs copied for the input section. */
3209 unsigned int count : 31;
3211 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3212 unsigned int ifunc : 1;
3215 /* PPC ELF linker hash entry. */
3217 struct ppc_elf_link_hash_entry
3219 struct elf_link_hash_entry elf;
3221 /* If this symbol is used in the linker created sections, the processor
3222 specific backend uses this field to map the field into the offset
3223 from the beginning of the section. */
3224 elf_linker_section_pointers_t *linker_section_pointer;
3226 /* Track dynamic relocs copied for this symbol. */
3227 struct elf_dyn_relocs *dyn_relocs;
3229 /* Contexts in which symbol is used in the GOT.
3230 Bits are or'd into the mask as the corresponding relocs are
3231 encountered during check_relocs, with TLS_TLS being set when any
3232 of the other TLS bits are set. tls_optimize clears bits when
3233 optimizing to indicate the corresponding GOT entry type is not
3234 needed. If set, TLS_TLS is never cleared. tls_optimize may also
3235 set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a
3236 separate flag rather than setting TPREL just for convenience in
3237 distinguishing the two cases.
3238 These flags are also kept for local symbols. */
3239 #define TLS_TLS 1 /* Any TLS reloc. */
3240 #define TLS_GD 2 /* GD reloc. */
3241 #define TLS_LD 4 /* LD reloc. */
3242 #define TLS_TPREL 8 /* TPREL reloc, => IE. */
3243 #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */
3244 #define TLS_MARK 32 /* __tls_get_addr call marked. */
3245 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3246 unsigned char tls_mask;
3248 /* The above field is also used to mark function symbols. In which
3249 case TLS_TLS will be 0. */
3250 #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */
3251 #define NON_GOT 256 /* local symbol plt, not stored. */
3253 /* Nonzero if we have seen a small data relocation referring to this
3255 unsigned char has_sda_refs : 1;
3257 /* Flag use of given relocations. */
3258 unsigned char has_addr16_ha : 1;
3259 unsigned char has_addr16_lo : 1;
3262 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3264 /* PPC ELF linker hash table. */
3266 struct ppc_elf_link_hash_table
3268 struct elf_link_hash_table elf;
3270 /* Various options passed from the linker. */
3271 struct ppc_elf_params *params;
3273 /* Short-cuts to get to dynamic linker sections. */
3277 elf_linker_section_t sdata[2];
3279 asection *glink_eh_frame;
3281 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3284 /* Shortcut to __tls_get_addr. */
3285 struct elf_link_hash_entry *tls_get_addr;
3287 /* The bfd that forced an old-style PLT. */
3290 /* TLS local dynamic got entry handling. */
3292 bfd_signed_vma refcount;
3296 /* Offset of branch table to PltResolve function in glink. */
3297 bfd_vma glink_pltresolve;
3299 /* Size of reserved GOT entries. */
3300 unsigned int got_header_size;
3301 /* Non-zero if allocating the header left a gap. */
3302 unsigned int got_gap;
3304 /* The type of PLT we have chosen to use. */
3305 enum ppc_elf_plt_type plt_type;
3307 /* True if the target system is VxWorks. */
3308 unsigned int is_vxworks:1;
3310 /* Whether there exist local gnu indirect function resolvers,
3311 referenced by dynamic relocations. */
3312 unsigned int local_ifunc_resolver:1;
3313 unsigned int maybe_local_ifunc_resolver:1;
3315 /* Set if tls optimization is enabled. */
3316 unsigned int do_tls_opt:1;
3318 /* The size of PLT entries. */
3320 /* The distance between adjacent PLT slots. */
3322 /* The size of the first PLT entry. */
3323 int plt_initial_entry_size;
3325 /* Small local sym cache. */
3326 struct sym_cache sym_cache;
3329 /* Rename some of the generic section flags to better document how they
3330 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3332 /* Nonzero if this section has TLS related relocations. */
3333 #define has_tls_reloc sec_flg0
3335 /* Nonzero if this section has a call to __tls_get_addr. */
3336 #define has_tls_get_addr_call sec_flg1
3338 /* Get the PPC ELF linker hash table from a link_info structure. */
3340 #define ppc_elf_hash_table(p) \
3341 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3342 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3344 /* Create an entry in a PPC ELF linker hash table. */
3346 static struct bfd_hash_entry *
3347 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3348 struct bfd_hash_table *table,
3351 /* Allocate the structure if it has not already been allocated by a
3355 entry = bfd_hash_allocate (table,
3356 sizeof (struct ppc_elf_link_hash_entry));
3361 /* Call the allocation method of the superclass. */
3362 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3365 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3366 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3367 ppc_elf_hash_entry (entry)->tls_mask = 0;
3368 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3374 /* Create a PPC ELF linker hash table. */
3376 static struct bfd_link_hash_table *
3377 ppc_elf_link_hash_table_create (bfd *abfd)
3379 struct ppc_elf_link_hash_table *ret;
3380 static struct ppc_elf_params default_params
3381 = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
3383 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3387 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3388 ppc_elf_link_hash_newfunc,
3389 sizeof (struct ppc_elf_link_hash_entry),
3396 ret->elf.init_plt_refcount.refcount = 0;
3397 ret->elf.init_plt_refcount.glist = NULL;
3398 ret->elf.init_plt_offset.offset = 0;
3399 ret->elf.init_plt_offset.glist = NULL;
3401 ret->params = &default_params;
3403 ret->sdata[0].name = ".sdata";
3404 ret->sdata[0].sym_name = "_SDA_BASE_";
3405 ret->sdata[0].bss_name = ".sbss";
3407 ret->sdata[1].name = ".sdata2";
3408 ret->sdata[1].sym_name = "_SDA2_BASE_";
3409 ret->sdata[1].bss_name = ".sbss2";
3411 ret->plt_entry_size = 12;
3412 ret->plt_slot_size = 8;
3413 ret->plt_initial_entry_size = 72;
3415 return &ret->elf.root;
3418 /* Hook linker params into hash table. */
3421 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3423 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3426 htab->params = params;
3427 params->pagesize_p2 = bfd_log2 (params->pagesize);
3430 /* Create .got and the related sections. */
3433 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3435 struct ppc_elf_link_hash_table *htab;
3437 if (!_bfd_elf_create_got_section (abfd, info))
3440 htab = ppc_elf_hash_table (info);
3441 if (!htab->is_vxworks)
3443 /* The powerpc .got has a blrl instruction in it. Mark it
3445 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3446 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3447 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3454 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3455 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3456 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3459 ppc_elf_create_linker_section (bfd *abfd,
3460 struct bfd_link_info *info,
3462 elf_linker_section_t *lsect)
3466 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3467 | SEC_LINKER_CREATED);
3469 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3474 /* Define the sym on the first section of this name. */
3475 s = bfd_get_section_by_name (abfd, lsect->name);
3477 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3478 if (lsect->sym == NULL)
3480 lsect->sym->root.u.def.value = 0x8000;
3485 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3487 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3492 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3493 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3494 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3496 p2align = htab->params->ppc476_workaround ? 6 : 4;
3497 if (p2align < htab->params->plt_stub_align)
3498 p2align = htab->params->plt_stub_align;
3500 || !bfd_set_section_alignment (abfd, s, p2align))
3503 if (!info->no_ld_generated_unwind_info)
3505 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3506 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3507 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3508 htab->glink_eh_frame = s;
3510 || !bfd_set_section_alignment (abfd, s, 2))
3514 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3515 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3518 || !bfd_set_section_alignment (abfd, s, 4))
3521 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3522 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3523 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3524 htab->elf.irelplt = s;
3526 || ! bfd_set_section_alignment (abfd, s, 2))
3529 if (!ppc_elf_create_linker_section (abfd, info, 0,
3533 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3540 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3541 to output sections (just like _bfd_elf_create_dynamic_sections has
3542 to create .dynbss and .rela.bss). */
3545 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3547 struct ppc_elf_link_hash_table *htab;
3551 htab = ppc_elf_hash_table (info);
3553 if (htab->elf.sgot == NULL
3554 && !ppc_elf_create_got (abfd, info))
3557 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3560 if (htab->glink == NULL
3561 && !ppc_elf_create_glink (abfd, info))
3564 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3565 SEC_ALLOC | SEC_LINKER_CREATED);
3570 if (! bfd_link_pic (info))
3572 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3573 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3574 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3577 || ! bfd_set_section_alignment (abfd, s, 2))
3581 if (htab->is_vxworks
3582 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3586 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3587 if (htab->plt_type == PLT_VXWORKS)
3588 /* The VxWorks PLT is a loaded section with contents. */
3589 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3590 return bfd_set_section_flags (abfd, s, flags);
3593 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3596 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3597 struct elf_link_hash_entry *dir,
3598 struct elf_link_hash_entry *ind)
3600 struct ppc_elf_link_hash_entry *edir, *eind;
3602 edir = (struct ppc_elf_link_hash_entry *) dir;
3603 eind = (struct ppc_elf_link_hash_entry *) ind;
3605 edir->tls_mask |= eind->tls_mask;
3606 edir->has_sda_refs |= eind->has_sda_refs;
3608 if (edir->elf.versioned != versioned_hidden)
3609 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3610 edir->elf.ref_regular |= eind->elf.ref_regular;
3611 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3612 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3613 edir->elf.needs_plt |= eind->elf.needs_plt;
3614 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3616 /* If we were called to copy over info for a weak sym, that's all. */
3617 if (eind->elf.root.type != bfd_link_hash_indirect)
3620 if (eind->dyn_relocs != NULL)
3622 if (edir->dyn_relocs != NULL)
3624 struct elf_dyn_relocs **pp;
3625 struct elf_dyn_relocs *p;
3627 /* Add reloc counts against the indirect sym to the direct sym
3628 list. Merge any entries against the same section. */
3629 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3631 struct elf_dyn_relocs *q;
3633 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3634 if (q->sec == p->sec)
3636 q->pc_count += p->pc_count;
3637 q->count += p->count;
3644 *pp = edir->dyn_relocs;
3647 edir->dyn_relocs = eind->dyn_relocs;
3648 eind->dyn_relocs = NULL;
3651 /* Copy over the GOT refcount entries that we may have already seen to
3652 the symbol which just became indirect. */
3653 edir->elf.got.refcount += eind->elf.got.refcount;
3654 eind->elf.got.refcount = 0;
3656 /* And plt entries. */
3657 if (eind->elf.plt.plist != NULL)
3659 if (edir->elf.plt.plist != NULL)
3661 struct plt_entry **entp;
3662 struct plt_entry *ent;
3664 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3666 struct plt_entry *dent;
3668 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3669 if (dent->sec == ent->sec && dent->addend == ent->addend)
3671 dent->plt.refcount += ent->plt.refcount;
3678 *entp = edir->elf.plt.plist;
3681 edir->elf.plt.plist = eind->elf.plt.plist;
3682 eind->elf.plt.plist = NULL;
3685 if (eind->elf.dynindx != -1)
3687 if (edir->elf.dynindx != -1)
3688 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3689 edir->elf.dynstr_index);
3690 edir->elf.dynindx = eind->elf.dynindx;
3691 edir->elf.dynstr_index = eind->elf.dynstr_index;
3692 eind->elf.dynindx = -1;
3693 eind->elf.dynstr_index = 0;
3697 /* Hook called by the linker routine which adds symbols from an object
3698 file. We use it to put .comm items in .sbss, and not .bss. */
3701 ppc_elf_add_symbol_hook (bfd *abfd,
3702 struct bfd_link_info *info,
3703 Elf_Internal_Sym *sym,
3704 const char **namep ATTRIBUTE_UNUSED,
3705 flagword *flagsp ATTRIBUTE_UNUSED,
3709 if (sym->st_shndx == SHN_COMMON
3710 && !bfd_link_relocatable (info)
3711 && is_ppc_elf (info->output_bfd)
3712 && sym->st_size <= elf_gp_size (abfd))
3714 /* Common symbols less than or equal to -G nn bytes are automatically
3716 struct ppc_elf_link_hash_table *htab;
3718 htab = ppc_elf_hash_table (info);
3719 if (htab->sbss == NULL)
3721 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3723 if (!htab->elf.dynobj)
3724 htab->elf.dynobj = abfd;
3726 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3729 if (htab->sbss == NULL)
3734 *valp = sym->st_size;
3737 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3738 && (abfd->flags & DYNAMIC) == 0
3739 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3740 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3745 /* Find a linker generated pointer with a given addend and type. */
3747 static elf_linker_section_pointers_t *
3748 elf_find_pointer_linker_section
3749 (elf_linker_section_pointers_t *linker_pointers,
3751 elf_linker_section_t *lsect)
3753 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3754 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3755 return linker_pointers;
3760 /* Allocate a pointer to live in a linker created section. */
3763 elf_allocate_pointer_linker_section (bfd *abfd,
3764 elf_linker_section_t *lsect,
3765 struct elf_link_hash_entry *h,
3766 const Elf_Internal_Rela *rel)
3768 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3769 elf_linker_section_pointers_t *linker_section_ptr;
3770 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3773 BFD_ASSERT (lsect != NULL);
3775 /* Is this a global symbol? */
3778 struct ppc_elf_link_hash_entry *eh;
3780 /* Has this symbol already been allocated? If so, our work is done. */
3781 eh = (struct ppc_elf_link_hash_entry *) h;
3782 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3787 ptr_linker_section_ptr = &eh->linker_section_pointer;
3791 BFD_ASSERT (is_ppc_elf (abfd));
3793 /* Allocation of a pointer to a local symbol. */
3794 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3796 /* Allocate a table to hold the local symbols if first time. */
3799 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3802 amt *= sizeof (elf_linker_section_pointers_t *);
3803 ptr = bfd_zalloc (abfd, amt);
3808 elf_local_ptr_offsets (abfd) = ptr;
3811 /* Has this symbol already been allocated? If so, our work is done. */
3812 if (elf_find_pointer_linker_section (ptr[r_symndx],
3817 ptr_linker_section_ptr = &ptr[r_symndx];
3820 /* Allocate space for a pointer in the linker section, and allocate
3821 a new pointer record from internal memory. */
3822 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3823 amt = sizeof (elf_linker_section_pointers_t);
3824 linker_section_ptr = bfd_alloc (abfd, amt);
3826 if (!linker_section_ptr)
3829 linker_section_ptr->next = *ptr_linker_section_ptr;
3830 linker_section_ptr->addend = rel->r_addend;
3831 linker_section_ptr->lsect = lsect;
3832 *ptr_linker_section_ptr = linker_section_ptr;
3834 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3836 linker_section_ptr->offset = lsect->section->size;
3837 lsect->section->size += 4;
3841 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3842 lsect->name, (long) linker_section_ptr->offset,
3843 (long) lsect->section->size);
3849 static struct plt_entry **
3850 update_local_sym_info (bfd *abfd,
3851 Elf_Internal_Shdr *symtab_hdr,
3852 unsigned long r_symndx,
3855 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3856 struct plt_entry **local_plt;
3857 unsigned char *local_got_tls_masks;
3859 if (local_got_refcounts == NULL)
3861 bfd_size_type size = symtab_hdr->sh_info;
3863 size *= (sizeof (*local_got_refcounts)
3864 + sizeof (*local_plt)
3865 + sizeof (*local_got_tls_masks));
3866 local_got_refcounts = bfd_zalloc (abfd, size);
3867 if (local_got_refcounts == NULL)
3869 elf_local_got_refcounts (abfd) = local_got_refcounts;
3872 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3873 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
3874 local_got_tls_masks[r_symndx] |= tls_type & 0xff;
3875 if ((tls_type & NON_GOT) == 0)
3876 local_got_refcounts[r_symndx] += 1;
3877 return local_plt + r_symndx;
3881 update_plt_info (bfd *abfd, struct plt_entry **plist,
3882 asection *sec, bfd_vma addend)
3884 struct plt_entry *ent;
3888 for (ent = *plist; ent != NULL; ent = ent->next)
3889 if (ent->sec == sec && ent->addend == addend)
3893 bfd_size_type amt = sizeof (*ent);
3894 ent = bfd_alloc (abfd, amt);
3899 ent->addend = addend;
3900 ent->plt.refcount = 0;
3903 ent->plt.refcount += 1;
3907 static struct plt_entry *
3908 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3910 struct plt_entry *ent;
3914 for (ent = *plist; ent != NULL; ent = ent->next)
3915 if (ent->sec == sec && ent->addend == addend)
3921 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3923 return (r_type == R_PPC_PLTREL24
3924 || r_type == R_PPC_LOCAL24PC
3925 || r_type == R_PPC_REL24
3926 || r_type == R_PPC_REL14
3927 || r_type == R_PPC_REL14_BRTAKEN
3928 || r_type == R_PPC_REL14_BRNTAKEN
3929 || r_type == R_PPC_ADDR24
3930 || r_type == R_PPC_ADDR14
3931 || r_type == R_PPC_ADDR14_BRTAKEN
3932 || r_type == R_PPC_ADDR14_BRNTAKEN
3933 || r_type == R_PPC_VLE_REL24);
3937 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3940 /* xgettext:c-format */
3941 (_("%pB: relocation %s cannot be used when making a shared object"),
3943 ppc_elf_howto_table[r_type]->name);
3944 bfd_set_error (bfd_error_bad_value);
3947 /* Look through the relocs for a section during the first phase, and
3948 allocate space in the global offset table or procedure linkage
3952 ppc_elf_check_relocs (bfd *abfd,
3953 struct bfd_link_info *info,
3955 const Elf_Internal_Rela *relocs)
3957 struct ppc_elf_link_hash_table *htab;
3958 Elf_Internal_Shdr *symtab_hdr;
3959 struct elf_link_hash_entry **sym_hashes;
3960 const Elf_Internal_Rela *rel;
3961 const Elf_Internal_Rela *rel_end;
3962 asection *got2, *sreloc;
3963 struct elf_link_hash_entry *tga;
3965 if (bfd_link_relocatable (info))
3968 /* Don't do anything special with non-loaded, non-alloced sections.
3969 In particular, any relocs in such sections should not affect GOT
3970 and PLT reference counting (ie. we don't allow them to create GOT
3971 or PLT entries), there's no possibility or desire to optimize TLS
3972 relocs, and there's not much point in propagating relocs to shared
3973 libs that the dynamic linker won't relocate. */
3974 if ((sec->flags & SEC_ALLOC) == 0)
3978 _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
3982 BFD_ASSERT (is_ppc_elf (abfd));
3984 /* Initialize howto table if not already done. */
3985 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3986 ppc_elf_howto_init ();
3988 htab = ppc_elf_hash_table (info);
3989 if (htab->glink == NULL)
3991 if (htab->elf.dynobj == NULL)
3992 htab->elf.dynobj = abfd;
3993 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3996 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3997 FALSE, FALSE, TRUE);
3998 symtab_hdr = &elf_symtab_hdr (abfd);
3999 sym_hashes = elf_sym_hashes (abfd);
4000 got2 = bfd_get_section_by_name (abfd, ".got2");
4003 rel_end = relocs + sec->reloc_count;
4004 for (rel = relocs; rel < rel_end; rel++)
4006 unsigned long r_symndx;
4007 enum elf_ppc_reloc_type r_type;
4008 struct elf_link_hash_entry *h;
4010 struct plt_entry **ifunc;
4012 r_symndx = ELF32_R_SYM (rel->r_info);
4013 if (r_symndx < symtab_hdr->sh_info)
4017 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4018 while (h->root.type == bfd_link_hash_indirect
4019 || h->root.type == bfd_link_hash_warning)
4020 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4023 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4024 This shows up in particular in an R_PPC_ADDR32 in the eabi
4027 && htab->elf.sgot == NULL
4028 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4030 if (htab->elf.dynobj == NULL)
4031 htab->elf.dynobj = abfd;
4032 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4034 BFD_ASSERT (h == htab->elf.hgot);
4038 r_type = ELF32_R_TYPE (rel->r_info);
4040 if (h == NULL && !htab->is_vxworks)
4042 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4047 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4049 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4050 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4051 NON_GOT | PLT_IFUNC);
4055 /* STT_GNU_IFUNC symbols must have a PLT entry;
4056 In a non-pie executable even when there are
4058 if (!bfd_link_pic (info)
4059 || is_branch_reloc (r_type)
4060 || r_type == R_PPC_PLT16_LO
4061 || r_type == R_PPC_PLT16_HI
4062 || r_type == R_PPC_PLT16_HA)
4065 if (r_type == R_PPC_PLTREL24)
4066 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4067 if (bfd_link_pic (info)
4068 && (r_type == R_PPC_PLTREL24
4069 || r_type == R_PPC_PLT16_LO
4070 || r_type == R_PPC_PLT16_HI
4071 || r_type == R_PPC_PLT16_HA))
4072 addend = rel->r_addend;
4073 if (!update_plt_info (abfd, ifunc, got2, addend))
4079 if (!htab->is_vxworks
4080 && is_branch_reloc (r_type)
4085 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4086 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4087 /* We have a new-style __tls_get_addr call with a marker
4091 /* Mark this section as having an old-style call. */
4092 sec->has_tls_get_addr_call = 1;
4099 /* These special tls relocs tie a call to __tls_get_addr with
4100 its parameter symbol. */
4102 ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK;
4104 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4105 NON_GOT | TLS_TLS | TLS_MARK))
4109 case R_PPC_GOT_TLSLD16:
4110 case R_PPC_GOT_TLSLD16_LO:
4111 case R_PPC_GOT_TLSLD16_HI:
4112 case R_PPC_GOT_TLSLD16_HA:
4113 tls_type = TLS_TLS | TLS_LD;
4116 case R_PPC_GOT_TLSGD16:
4117 case R_PPC_GOT_TLSGD16_LO:
4118 case R_PPC_GOT_TLSGD16_HI:
4119 case R_PPC_GOT_TLSGD16_HA:
4120 tls_type = TLS_TLS | TLS_GD;
4123 case R_PPC_GOT_TPREL16:
4124 case R_PPC_GOT_TPREL16_LO:
4125 case R_PPC_GOT_TPREL16_HI:
4126 case R_PPC_GOT_TPREL16_HA:
4127 if (bfd_link_dll (info))
4128 info->flags |= DF_STATIC_TLS;
4129 tls_type = TLS_TLS | TLS_TPREL;
4132 case R_PPC_GOT_DTPREL16:
4133 case R_PPC_GOT_DTPREL16_LO:
4134 case R_PPC_GOT_DTPREL16_HI:
4135 case R_PPC_GOT_DTPREL16_HA:
4136 tls_type = TLS_TLS | TLS_DTPREL;
4138 sec->has_tls_reloc = 1;
4141 /* GOT16 relocations */
4143 case R_PPC_GOT16_LO:
4144 case R_PPC_GOT16_HI:
4145 case R_PPC_GOT16_HA:
4146 /* This symbol requires a global offset table entry. */
4147 if (htab->elf.sgot == NULL)
4149 if (htab->elf.dynobj == NULL)
4150 htab->elf.dynobj = abfd;
4151 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4156 h->got.refcount += 1;
4157 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4160 /* This is a global offset table entry for a local symbol. */
4161 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4164 /* We may also need a plt entry if the symbol turns out to be
4166 if (h != NULL && !bfd_link_pic (info))
4168 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4173 /* Indirect .sdata relocation. */
4174 case R_PPC_EMB_SDAI16:
4175 if (bfd_link_pic (info))
4177 bad_shared_reloc (abfd, r_type);
4180 htab->sdata[0].sym->ref_regular = 1;
4181 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4186 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4187 h->non_got_ref = TRUE;
4191 /* Indirect .sdata2 relocation. */
4192 case R_PPC_EMB_SDA2I16:
4193 if (bfd_link_pic (info))
4195 bad_shared_reloc (abfd, r_type);
4198 htab->sdata[1].sym->ref_regular = 1;
4199 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4204 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4205 h->non_got_ref = TRUE;
4209 case R_PPC_SDAREL16:
4210 htab->sdata[0].sym->ref_regular = 1;
4213 case R_PPC_VLE_SDAREL_LO16A:
4214 case R_PPC_VLE_SDAREL_LO16D:
4215 case R_PPC_VLE_SDAREL_HI16A:
4216 case R_PPC_VLE_SDAREL_HI16D:
4217 case R_PPC_VLE_SDAREL_HA16A:
4218 case R_PPC_VLE_SDAREL_HA16D:
4221 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4222 h->non_got_ref = TRUE;
4226 case R_PPC_VLE_REL8:
4227 case R_PPC_VLE_REL15:
4228 case R_PPC_VLE_REL24:
4229 case R_PPC_VLE_LO16A:
4230 case R_PPC_VLE_LO16D:
4231 case R_PPC_VLE_HI16A:
4232 case R_PPC_VLE_HI16D:
4233 case R_PPC_VLE_HA16A:
4234 case R_PPC_VLE_HA16D:
4235 case R_PPC_VLE_ADDR20:
4238 case R_PPC_EMB_SDA2REL:
4239 if (bfd_link_pic (info))
4241 bad_shared_reloc (abfd, r_type);
4244 htab->sdata[1].sym->ref_regular = 1;
4247 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4248 h->non_got_ref = TRUE;
4252 case R_PPC_VLE_SDA21_LO:
4253 case R_PPC_VLE_SDA21:
4254 case R_PPC_EMB_SDA21:
4255 case R_PPC_EMB_RELSDA:
4256 if (bfd_link_pic (info))
4258 bad_shared_reloc (abfd, r_type);
4263 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4264 h->non_got_ref = TRUE;
4268 case R_PPC_EMB_NADDR32:
4269 case R_PPC_EMB_NADDR16:
4270 case R_PPC_EMB_NADDR16_LO:
4271 case R_PPC_EMB_NADDR16_HI:
4272 case R_PPC_EMB_NADDR16_HA:
4273 if (bfd_link_pic (info))
4275 bad_shared_reloc (abfd, r_type);
4279 h->non_got_ref = TRUE;
4282 case R_PPC_PLTREL24:
4285 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4289 case R_PPC_PLTREL32:
4290 case R_PPC_PLT16_LO:
4291 case R_PPC_PLT16_HI:
4292 case R_PPC_PLT16_HA:
4294 fprintf (stderr, "Reloc requires a PLT entry\n");
4296 /* This symbol requires a procedure linkage table entry. */
4301 /* It does not make sense to have a procedure linkage
4302 table entry for a non-ifunc local symbol. */
4303 info->callbacks->einfo
4304 /* xgettext:c-format */
4305 (_("%H: %s reloc against local symbol\n"),
4306 abfd, sec, rel->r_offset,
4307 ppc_elf_howto_table[r_type]->name);
4308 bfd_set_error (bfd_error_bad_value);
4316 if (bfd_link_pic (info)
4317 && (r_type == R_PPC_PLTREL24
4318 || r_type == R_PPC_PLT16_LO
4319 || r_type == R_PPC_PLT16_HI
4320 || r_type == R_PPC_PLT16_HA))
4321 addend = rel->r_addend;
4323 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4328 /* The following relocations don't need to propagate the
4329 relocation if linking a shared object since they are
4330 section relative. */
4332 case R_PPC_SECTOFF_LO:
4333 case R_PPC_SECTOFF_HI:
4334 case R_PPC_SECTOFF_HA:
4335 case R_PPC_DTPREL16:
4336 case R_PPC_DTPREL16_LO:
4337 case R_PPC_DTPREL16_HI:
4338 case R_PPC_DTPREL16_HA:
4343 case R_PPC_REL16_LO:
4344 case R_PPC_REL16_HI:
4345 case R_PPC_REL16_HA:
4346 case R_PPC_REL16DX_HA:
4347 ppc_elf_tdata (abfd)->has_rel16 = 1;
4350 /* These are just markers. */
4352 case R_PPC_EMB_MRKREF:
4356 case R_PPC_RELAX_PLT:
4357 case R_PPC_RELAX_PLTREL24:
4361 /* These should only appear in dynamic objects. */
4363 case R_PPC_GLOB_DAT:
4364 case R_PPC_JMP_SLOT:
4365 case R_PPC_RELATIVE:
4366 case R_PPC_IRELATIVE:
4369 /* These aren't handled yet. We'll report an error later. */
4371 case R_PPC_EMB_RELSEC16:
4372 case R_PPC_EMB_RELST_LO:
4373 case R_PPC_EMB_RELST_HI:
4374 case R_PPC_EMB_RELST_HA:
4375 case R_PPC_EMB_BIT_FLD:
4378 /* This refers only to functions defined in the shared library. */
4379 case R_PPC_LOCAL24PC:
4380 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4382 htab->plt_type = PLT_OLD;
4383 htab->old_bfd = abfd;
4385 if (h != NULL && h->type == STT_GNU_IFUNC)
4388 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4393 /* This relocation describes the C++ object vtable hierarchy.
4394 Reconstruct it for later use during GC. */
4395 case R_PPC_GNU_VTINHERIT:
4396 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4400 /* This relocation describes which C++ vtable entries are actually
4401 used. Record for later use during GC. */
4402 case R_PPC_GNU_VTENTRY:
4403 BFD_ASSERT (h != NULL);
4405 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4409 /* We shouldn't really be seeing TPREL32. */
4412 case R_PPC_TPREL16_LO:
4413 case R_PPC_TPREL16_HI:
4414 case R_PPC_TPREL16_HA:
4415 if (bfd_link_dll (info))
4416 info->flags |= DF_STATIC_TLS;
4420 case R_PPC_DTPMOD32:
4421 case R_PPC_DTPREL32:
4427 && (sec->flags & SEC_CODE) != 0
4428 && bfd_link_pic (info)
4429 && htab->plt_type == PLT_UNSET)
4431 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4432 the start of a function, which assembles to a REL32
4433 reference to .got2. If we detect one of these, then
4434 force the old PLT layout because the linker cannot
4435 reliably deduce the GOT pointer value needed for
4438 Elf_Internal_Sym *isym;
4440 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4445 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4448 htab->plt_type = PLT_OLD;
4449 htab->old_bfd = abfd;
4452 if (h == NULL || h == htab->elf.hgot)
4458 case R_PPC_ADDR16_LO:
4459 case R_PPC_ADDR16_HI:
4460 case R_PPC_ADDR16_HA:
4463 if (h != NULL && !bfd_link_pic (info))
4465 /* We may need a plt entry if the symbol turns out to be
4466 a function defined in a dynamic object. */
4467 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4470 /* We may need a copy reloc too. */
4472 h->pointer_equality_needed = 1;
4473 if (r_type == R_PPC_ADDR16_HA)
4474 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4475 if (r_type == R_PPC_ADDR16_LO)
4476 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4482 case R_PPC_REL14_BRTAKEN:
4483 case R_PPC_REL14_BRNTAKEN:
4486 if (h == htab->elf.hgot)
4488 if (htab->plt_type == PLT_UNSET)
4490 htab->plt_type = PLT_OLD;
4491 htab->old_bfd = abfd;
4499 case R_PPC_ADDR14_BRTAKEN:
4500 case R_PPC_ADDR14_BRNTAKEN:
4501 if (h != NULL && !bfd_link_pic (info))
4503 /* We may need a plt entry if the symbol turns out to be
4504 a function defined in a dynamic object. */
4506 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4512 /* If we are creating a shared library, and this is a reloc
4513 against a global symbol, or a non PC relative reloc
4514 against a local symbol, then we need to copy the reloc
4515 into the shared library. However, if we are linking with
4516 -Bsymbolic, we do not need to copy a reloc against a
4517 global symbol which is defined in an object we are
4518 including in the link (i.e., DEF_REGULAR is set). At
4519 this point we have not seen all the input files, so it is
4520 possible that DEF_REGULAR is not set now but will be set
4521 later (it is never cleared). In case of a weak definition,
4522 DEF_REGULAR may be cleared later by a strong definition in
4523 a shared library. We account for that possibility below by
4524 storing information in the dyn_relocs field of the hash
4525 table entry. A similar situation occurs when creating
4526 shared libraries and symbol visibility changes render the
4529 If on the other hand, we are creating an executable, we
4530 may need to keep relocations for symbols satisfied by a
4531 dynamic library if we manage to avoid copy relocs for the
4533 if ((bfd_link_pic (info)
4534 && (must_be_dyn_reloc (info, r_type)
4536 && (!SYMBOLIC_BIND (info, h)
4537 || h->root.type == bfd_link_hash_defweak
4538 || !h->def_regular))))
4539 || (ELIMINATE_COPY_RELOCS
4540 && !bfd_link_pic (info)
4542 && (h->root.type == bfd_link_hash_defweak
4543 || !h->def_regular)))
4547 "ppc_elf_check_relocs needs to "
4548 "create relocation for %s\n",
4549 (h && h->root.root.string
4550 ? h->root.root.string : "<unknown>"));
4554 if (htab->elf.dynobj == NULL)
4555 htab->elf.dynobj = abfd;
4557 sreloc = _bfd_elf_make_dynamic_reloc_section
4558 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4564 /* If this is a global symbol, we count the number of
4565 relocations we need for this symbol. */
4568 struct elf_dyn_relocs *p;
4569 struct elf_dyn_relocs **rel_head;
4571 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4573 if (p == NULL || p->sec != sec)
4575 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4578 p->next = *rel_head;
4585 if (!must_be_dyn_reloc (info, r_type))
4590 /* Track dynamic relocs needed for local syms too.
4591 We really need local syms available to do this
4593 struct ppc_dyn_relocs *p;
4594 struct ppc_dyn_relocs **rel_head;
4595 bfd_boolean is_ifunc;
4598 Elf_Internal_Sym *isym;
4600 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4605 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4609 vpp = &elf_section_data (s)->local_dynrel;
4610 rel_head = (struct ppc_dyn_relocs **) vpp;
4611 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4613 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4615 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4617 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4620 p->next = *rel_head;
4623 p->ifunc = is_ifunc;
4637 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4638 and OBFD, and merge non-conflicting ones. */
4640 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4642 bfd *obfd = info->output_bfd;
4643 obj_attribute *in_attr, *in_attrs;
4644 obj_attribute *out_attr, *out_attrs;
4646 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4647 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4649 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4650 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4652 if (in_attr->i != out_attr->i)
4654 int in_fp = in_attr->i & 3;
4655 int out_fp = out_attr->i & 3;
4659 else if (out_fp == 0)
4662 out_attr->i ^= in_fp;
4664 else if (out_fp != 2 && in_fp == 2)
4666 /* xgettext:c-format */
4667 (_("warning: %pB uses hard float, %pB uses soft float"), obfd, ibfd);
4668 else if (out_fp == 2 && in_fp != 2)
4670 /* xgettext:c-format */
4671 (_("warning: %pB uses hard float, %pB uses soft float"), ibfd, obfd);
4672 else if (out_fp == 1 && in_fp == 3)
4674 /* xgettext:c-format */
4675 (_("warning: %pB uses double-precision hard float, "
4676 "%pB uses single-precision hard float"), obfd, ibfd);
4677 else if (out_fp == 3 && in_fp == 1)
4679 /* xgettext:c-format */
4680 (_("warning: %pB uses double-precision hard float, "
4681 "%pB uses single-precision hard float"), ibfd, obfd);
4683 in_fp = in_attr->i & 0xc;
4684 out_fp = out_attr->i & 0xc;
4687 else if (out_fp == 0)
4690 out_attr->i ^= in_fp;
4692 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4694 /* xgettext:c-format */
4695 (_("warning: %pB uses 64-bit long double, "
4696 "%pB uses 128-bit long double"), ibfd, obfd);
4697 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4699 /* xgettext:c-format */
4700 (_("warning: %pB uses 64-bit long double, "
4701 "%pB uses 128-bit long double"), obfd, ibfd);
4702 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4704 /* xgettext:c-format */
4705 (_("warning: %pB uses IBM long double, "
4706 "%pB uses IEEE long double"), ibfd, obfd);
4707 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4709 /* xgettext:c-format */
4710 (_("warning: %pB uses IBM long double, "
4711 "%pB uses IEEE long double"), obfd, ibfd);
4715 /* Merge object attributes from IBFD into OBFD. Warn if
4716 there are conflicting attributes. */
4718 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4721 obj_attribute *in_attr, *in_attrs;
4722 obj_attribute *out_attr, *out_attrs;
4724 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4726 obfd = info->output_bfd;
4727 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4728 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4730 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4731 merge non-conflicting ones. */
4732 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4733 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4734 if (in_attr->i != out_attr->i)
4736 int in_vec = in_attr->i & 3;
4737 int out_vec = out_attr->i & 3;
4741 else if (out_vec == 0)
4744 out_attr->i = in_vec;
4746 /* For now, allow generic to transition to AltiVec or SPE
4747 without a warning. If GCC marked files with their stack
4748 alignment and used don't-care markings for files which are
4749 not affected by the vector ABI, we could warn about this
4751 else if (in_vec == 1)
4753 else if (out_vec == 1)
4756 out_attr->i = in_vec;
4758 else if (out_vec < in_vec)
4760 /* xgettext:c-format */
4761 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4763 else if (out_vec > in_vec)
4765 /* xgettext:c-format */
4766 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4770 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4771 and merge non-conflicting ones. */
4772 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4773 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4774 if (in_attr->i != out_attr->i)
4776 int in_struct = in_attr->i & 3;
4777 int out_struct = out_attr->i & 3;
4779 if (in_struct == 0 || in_struct == 3)
4781 else if (out_struct == 0)
4784 out_attr->i = in_struct;
4786 else if (out_struct < in_struct)
4788 /* xgettext:c-format */
4789 (_("warning: %pB uses r3/r4 for small structure returns, "
4790 "%pB uses memory"), obfd, ibfd);
4791 else if (out_struct > in_struct)
4793 /* xgettext:c-format */
4794 (_("warning: %pB uses r3/r4 for small structure returns, "
4795 "%pB uses memory"), ibfd, obfd);
4798 /* Merge Tag_compatibility attributes and any common GNU ones. */
4799 _bfd_elf_merge_object_attributes (ibfd, info);
4804 /* Merge backend specific data from an object file to the output
4805 object file when linking. */
4808 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4810 bfd *obfd = info->output_bfd;
4815 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4818 /* Check if we have the same endianness. */
4819 if (! _bfd_generic_verify_endian_match (ibfd, info))
4822 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4825 new_flags = elf_elfheader (ibfd)->e_flags;
4826 old_flags = elf_elfheader (obfd)->e_flags;
4827 if (!elf_flags_init (obfd))
4829 /* First call, no flags set. */
4830 elf_flags_init (obfd) = TRUE;
4831 elf_elfheader (obfd)->e_flags = new_flags;
4834 /* Compatible flags are ok. */
4835 else if (new_flags == old_flags)
4838 /* Incompatible flags. */
4841 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4842 to be linked with either. */
4844 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4845 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4849 (_("%pB: compiled with -mrelocatable and linked with "
4850 "modules compiled normally"), ibfd);
4852 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4853 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4857 (_("%pB: compiled normally and linked with "
4858 "modules compiled with -mrelocatable"), ibfd);
4861 /* The output is -mrelocatable-lib iff both the input files are. */
4862 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4863 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4865 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4866 but each input file is either -mrelocatable or -mrelocatable-lib. */
4867 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4868 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4869 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4870 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4872 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4873 any module uses it. */
4874 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4876 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4877 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4879 /* Warn about any other mismatches. */
4880 if (new_flags != old_flags)
4884 /* xgettext:c-format */
4885 (_("%pB: uses different e_flags (%#x) fields "
4886 "than previous modules (%#x)"),
4887 ibfd, new_flags, old_flags);
4892 bfd_set_error (bfd_error_bad_value);
4901 ppc_elf_vle_split16 (bfd *input_bfd,
4902 asection *input_section,
4903 unsigned long offset,
4906 split16_format_type split16_format,
4909 unsigned int insn, opcode, top5;
4911 insn = bfd_get_32 (input_bfd, loc);
4912 opcode = insn & 0xfc00f800;
4913 if (opcode == E_OR2I_INSN
4914 || opcode == E_AND2I_DOT_INSN
4915 || opcode == E_OR2IS_INSN
4916 || opcode == E_LIS_INSN
4917 || opcode == E_AND2IS_DOT_INSN)
4919 if (split16_format != split16a_type)
4922 split16_format = split16a_type;
4925 /* xgettext:c-format */
4926 (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
4927 input_bfd, input_section, offset, opcode);
4930 else if (opcode == E_ADD2I_DOT_INSN
4931 || opcode == E_ADD2IS_INSN
4932 || opcode == E_CMP16I_INSN
4933 || opcode == E_MULL2I_INSN
4934 || opcode == E_CMPL16I_INSN
4935 || opcode == E_CMPH16I_INSN
4936 || opcode == E_CMPHL16I_INSN)
4938 if (split16_format != split16d_type)
4941 split16_format = split16d_type;
4944 /* xgettext:c-format */
4945 (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
4946 input_bfd, input_section, offset, opcode);
4949 top5 = value & 0xf800;
4950 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4951 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4953 insn |= value & 0x7ff;
4954 bfd_put_32 (input_bfd, insn, loc);
4958 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
4962 insn = bfd_get_32 (output_bfd, loc);
4963 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4964 /* Top 4 bits of value to 17..20. */
4965 insn |= (value & 0xf0000) >> 5;
4966 /* Next 5 bits of the value to 11..15. */
4967 insn |= (value & 0xf800) << 5;
4968 /* And the final 11 bits of the value to bits 21 to 31. */
4969 insn |= value & 0x7ff;
4970 bfd_put_32 (output_bfd, insn, loc);
4974 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4975 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4977 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4978 struct bfd_link_info *info)
4980 struct ppc_elf_link_hash_table *htab;
4983 htab = ppc_elf_hash_table (info);
4985 if (htab->plt_type == PLT_UNSET)
4987 struct elf_link_hash_entry *h;
4989 if (htab->params->plt_style == PLT_OLD)
4990 htab->plt_type = PLT_OLD;
4991 else if (bfd_link_pic (info)
4992 && htab->elf.dynamic_sections_created
4993 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4994 FALSE, FALSE, TRUE)) != NULL
4995 && (h->type == STT_FUNC
4998 && !(SYMBOL_CALLS_LOCAL (info, h)
4999 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5001 /* Profiling of shared libs (and pies) is not supported with
5002 secure plt, because ppc32 does profiling before a
5003 function prologue and a secure plt pic call stubs needs
5004 r30 to be set up. */
5005 htab->plt_type = PLT_OLD;
5010 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
5012 /* Look through the reloc flags left by ppc_elf_check_relocs.
5013 Use the old style bss plt if a file makes plt calls
5014 without using the new relocs, and if ld isn't given
5015 --secure-plt and we never see REL16 relocs. */
5016 if (plt_type == PLT_UNSET)
5018 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
5019 if (is_ppc_elf (ibfd))
5021 if (ppc_elf_tdata (ibfd)->has_rel16)
5023 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5026 htab->old_bfd = ibfd;
5030 htab->plt_type = plt_type;
5033 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5035 if (htab->old_bfd != NULL)
5036 _bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd);
5038 _bfd_error_handler (_("bss-plt forced by profiling"));
5041 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5043 if (htab->plt_type == PLT_NEW)
5045 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5046 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5048 /* The new PLT is a loaded section. */
5049 if (htab->elf.splt != NULL
5050 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5053 /* The new GOT is not executable. */
5054 if (htab->elf.sgot != NULL
5055 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5060 /* Stop an unused .glink section from affecting .text alignment. */
5061 if (htab->glink != NULL
5062 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5065 return htab->plt_type == PLT_NEW;
5068 /* Return the section that should be marked against GC for a given
5072 ppc_elf_gc_mark_hook (asection *sec,
5073 struct bfd_link_info *info,
5074 Elf_Internal_Rela *rel,
5075 struct elf_link_hash_entry *h,
5076 Elf_Internal_Sym *sym)
5079 switch (ELF32_R_TYPE (rel->r_info))
5081 case R_PPC_GNU_VTINHERIT:
5082 case R_PPC_GNU_VTENTRY:
5086 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5089 /* Set plt output section type, htab->tls_get_addr, and call the
5090 generic ELF tls_setup function. */
5093 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5095 struct ppc_elf_link_hash_table *htab;
5097 htab = ppc_elf_hash_table (info);
5098 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5099 FALSE, FALSE, TRUE);
5100 if (htab->plt_type != PLT_NEW)
5101 htab->params->no_tls_get_addr_opt = TRUE;
5103 if (!htab->params->no_tls_get_addr_opt)
5105 struct elf_link_hash_entry *opt, *tga;
5106 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5107 FALSE, FALSE, TRUE);
5109 && (opt->root.type == bfd_link_hash_defined
5110 || opt->root.type == bfd_link_hash_defweak))
5112 /* If glibc supports an optimized __tls_get_addr call stub,
5113 signalled by the presence of __tls_get_addr_opt, and we'll
5114 be calling __tls_get_addr via a plt call stub, then
5115 make __tls_get_addr point to __tls_get_addr_opt. */
5116 tga = htab->tls_get_addr;
5117 if (htab->elf.dynamic_sections_created
5119 && (tga->type == STT_FUNC
5121 && !(SYMBOL_CALLS_LOCAL (info, tga)
5122 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5124 struct plt_entry *ent;
5125 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5126 if (ent->plt.refcount > 0)
5130 tga->root.type = bfd_link_hash_indirect;
5131 tga->root.u.i.link = &opt->root;
5132 ppc_elf_copy_indirect_symbol (info, opt, tga);
5134 if (opt->dynindx != -1)
5136 /* Use __tls_get_addr_opt in dynamic relocations. */
5138 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5140 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5143 htab->tls_get_addr = opt;
5148 htab->params->no_tls_get_addr_opt = TRUE;
5150 if (htab->plt_type == PLT_NEW
5151 && htab->elf.splt != NULL
5152 && htab->elf.splt->output_section != NULL)
5154 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5155 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5158 return _bfd_elf_tls_setup (obfd, info);
5161 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5165 branch_reloc_hash_match (const bfd *ibfd,
5166 const Elf_Internal_Rela *rel,
5167 const struct elf_link_hash_entry *hash)
5169 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5170 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5171 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5173 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5175 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5176 struct elf_link_hash_entry *h;
5178 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5179 while (h->root.type == bfd_link_hash_indirect
5180 || h->root.type == bfd_link_hash_warning)
5181 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5188 /* Run through all the TLS relocs looking for optimization
5192 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5193 struct bfd_link_info *info)
5197 struct ppc_elf_link_hash_table *htab;
5200 if (!bfd_link_executable (info))
5203 htab = ppc_elf_hash_table (info);
5207 /* Make two passes through the relocs. First time check that tls
5208 relocs involved in setting up a tls_get_addr call are indeed
5209 followed by such a call. If they are not, don't do any tls
5210 optimization. On the second pass twiddle tls_mask flags to
5211 notify relocate_section that optimization can be done, and
5212 adjust got and plt refcounts. */
5213 for (pass = 0; pass < 2; ++pass)
5214 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5216 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5217 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5219 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5220 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5222 Elf_Internal_Rela *relstart, *rel, *relend;
5223 int expecting_tls_get_addr = 0;
5225 /* Read the relocations. */
5226 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5228 if (relstart == NULL)
5231 relend = relstart + sec->reloc_count;
5232 for (rel = relstart; rel < relend; rel++)
5234 enum elf_ppc_reloc_type r_type;
5235 unsigned long r_symndx;
5236 struct elf_link_hash_entry *h = NULL;
5237 unsigned char *tls_mask;
5238 unsigned char tls_set, tls_clear;
5239 bfd_boolean is_local;
5240 bfd_signed_vma *got_count;
5242 r_symndx = ELF32_R_SYM (rel->r_info);
5243 if (r_symndx >= symtab_hdr->sh_info)
5245 struct elf_link_hash_entry **sym_hashes;
5247 sym_hashes = elf_sym_hashes (ibfd);
5248 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5249 while (h->root.type == bfd_link_hash_indirect
5250 || h->root.type == bfd_link_hash_warning)
5251 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5259 r_type = ELF32_R_TYPE (rel->r_info);
5260 /* If this section has old-style __tls_get_addr calls
5261 without marker relocs, then check that each
5262 __tls_get_addr call reloc is preceded by a reloc
5263 that conceivably belongs to the __tls_get_addr arg
5264 setup insn. If we don't find matching arg setup
5265 relocs, don't do any tls optimization. */
5267 && sec->has_tls_get_addr_call
5269 && h == htab->tls_get_addr
5270 && !expecting_tls_get_addr
5271 && is_branch_reloc (r_type))
5273 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5274 "TLS optimization disabled\n",
5275 ibfd, sec, rel->r_offset);
5276 if (elf_section_data (sec)->relocs != relstart)
5281 expecting_tls_get_addr = 0;
5284 case R_PPC_GOT_TLSLD16:
5285 case R_PPC_GOT_TLSLD16_LO:
5286 expecting_tls_get_addr = 1;
5289 case R_PPC_GOT_TLSLD16_HI:
5290 case R_PPC_GOT_TLSLD16_HA:
5291 /* These relocs should never be against a symbol
5292 defined in a shared lib. Leave them alone if
5293 that turns out to be the case. */
5302 case R_PPC_GOT_TLSGD16:
5303 case R_PPC_GOT_TLSGD16_LO:
5304 expecting_tls_get_addr = 1;
5307 case R_PPC_GOT_TLSGD16_HI:
5308 case R_PPC_GOT_TLSGD16_HA:
5314 tls_set = TLS_TLS | TLS_TPRELGD;
5318 case R_PPC_GOT_TPREL16:
5319 case R_PPC_GOT_TPREL16_LO:
5320 case R_PPC_GOT_TPREL16_HI:
5321 case R_PPC_GOT_TPREL16_HA:
5326 tls_clear = TLS_TPREL;
5334 expecting_tls_get_addr = 2;
5345 if (!expecting_tls_get_addr
5346 || (expecting_tls_get_addr == 1
5347 && !sec->has_tls_get_addr_call))
5350 if (rel + 1 < relend
5351 && branch_reloc_hash_match (ibfd, rel + 1,
5352 htab->tls_get_addr))
5355 /* Uh oh, we didn't find the expected call. We
5356 could just mark this symbol to exclude it
5357 from tls optimization but it's safer to skip
5358 the entire optimization. */
5359 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5360 "TLS optimization disabled\n"),
5361 ibfd, sec, rel->r_offset);
5362 if (elf_section_data (sec)->relocs != relstart)
5369 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5370 got_count = &h->got.refcount;
5374 bfd_signed_vma *lgot_refs;
5375 struct plt_entry **local_plt;
5376 unsigned char *lgot_masks;
5378 lgot_refs = elf_local_got_refcounts (ibfd);
5379 if (lgot_refs == NULL)
5381 local_plt = (struct plt_entry **)
5382 (lgot_refs + symtab_hdr->sh_info);
5383 lgot_masks = (unsigned char *)
5384 (local_plt + symtab_hdr->sh_info);
5385 tls_mask = &lgot_masks[r_symndx];
5386 got_count = &lgot_refs[r_symndx];
5389 /* If we don't have old-style __tls_get_addr calls
5390 without TLSGD/TLSLD marker relocs, and we haven't
5391 found a new-style __tls_get_addr call with a
5392 marker for this symbol, then we either have a
5393 broken object file or an -mlongcall style
5394 indirect call to __tls_get_addr without a marker.
5395 Disable optimization in this case. */
5396 if ((tls_clear & (TLS_GD | TLS_LD)) != 0
5397 && !sec->has_tls_get_addr_call
5398 && ((*tls_mask & (TLS_TLS | TLS_MARK))
5399 != (TLS_TLS | TLS_MARK)))
5402 if (expecting_tls_get_addr)
5404 struct plt_entry *ent;
5407 if (bfd_link_pic (info)
5408 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5409 addend = rel[1].r_addend;
5410 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5412 if (ent != NULL && ent->plt.refcount > 0)
5413 ent->plt.refcount -= 1;
5415 if (expecting_tls_get_addr == 2)
5421 /* We managed to get rid of a got entry. */
5426 *tls_mask |= tls_set;
5427 *tls_mask &= ~tls_clear;
5430 if (elf_section_data (sec)->relocs != relstart)
5434 htab->do_tls_opt = 1;
5438 /* Find dynamic relocs for H that apply to read-only sections. */
5441 readonly_dynrelocs (struct elf_link_hash_entry *h)
5443 struct elf_dyn_relocs *p;
5445 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5447 asection *s = p->sec->output_section;
5449 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5455 /* Return true if we have dynamic relocs against H or any of its weak
5456 aliases, that apply to read-only sections. Cannot be used after
5457 size_dynamic_sections. */
5460 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
5462 struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
5465 if (readonly_dynrelocs (&eh->elf))
5467 eh = ppc_elf_hash_entry (eh->elf.u.alias);
5468 } while (eh != NULL && &eh->elf != h);
5473 /* Return whether H has pc-relative dynamic relocs. */
5476 pc_dynrelocs (struct elf_link_hash_entry *h)
5478 struct elf_dyn_relocs *p;
5480 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5481 if (p->pc_count != 0)
5486 /* Adjust a symbol defined by a dynamic object and referenced by a
5487 regular object. The current definition is in some section of the
5488 dynamic object, but we're not including those sections. We have to
5489 change the definition to something the rest of the link can
5493 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5494 struct elf_link_hash_entry *h)
5496 struct ppc_elf_link_hash_table *htab;
5500 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5501 h->root.root.string);
5504 /* Make sure we know what is going on here. */
5505 htab = ppc_elf_hash_table (info);
5506 BFD_ASSERT (htab->elf.dynobj != NULL
5508 || h->type == STT_GNU_IFUNC
5512 && !h->def_regular)));
5514 /* Deal with function syms. */
5515 if (h->type == STT_FUNC
5516 || h->type == STT_GNU_IFUNC
5519 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
5520 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5521 /* Discard dyn_relocs when non-pic if we've decided that a
5522 function symbol is local. */
5523 if (!bfd_link_pic (info) && local)
5524 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5526 /* Clear procedure linkage table information for any symbol that
5527 won't need a .plt entry. */
5528 struct plt_entry *ent;
5529 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5530 if (ent->plt.refcount > 0)
5533 || (h->type != STT_GNU_IFUNC && local))
5535 /* A PLT entry is not required/allowed when:
5537 1. We are not using ld.so; because then the PLT entry
5538 can't be set up, so we can't use one. In this case,
5539 ppc_elf_adjust_dynamic_symbol won't even be called.
5541 2. GC has rendered the entry unused.
5543 3. We know for certain that a call to this symbol
5544 will go to this object, or will remain undefined. */
5545 h->plt.plist = NULL;
5547 h->pointer_equality_needed = 0;
5551 /* Taking a function's address in a read/write section
5552 doesn't require us to define the function symbol in the
5553 executable on a plt call stub. A dynamic reloc can
5554 be used instead, giving better runtime performance.
5555 (Calls via that function pointer don't need to bounce
5556 through the plt call stub.) Similarly, use a dynamic
5557 reloc for a weak reference when possible, allowing the
5558 resolution of the symbol to be set at load time rather
5560 if ((h->pointer_equality_needed
5562 && !h->ref_regular_nonweak
5563 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5564 && !htab->is_vxworks
5565 && !ppc_elf_hash_entry (h)->has_sda_refs
5566 && !readonly_dynrelocs (h))
5568 h->pointer_equality_needed = 0;
5569 /* If we haven't seen a branch reloc then we don't need
5572 h->plt.plist = NULL;
5574 else if (!bfd_link_pic (info))
5575 /* We are going to be defining the function symbol on the
5576 plt stub, so no dyn_relocs needed when non-pic. */
5577 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5579 h->protected_def = 0;
5580 /* Function symbols can't have copy relocs. */
5584 h->plt.plist = NULL;
5586 /* If this is a weak symbol, and there is a real definition, the
5587 processor independent code will have arranged for us to see the
5588 real definition first, and we can just use the same value. */
5589 if (h->is_weakalias)
5591 struct elf_link_hash_entry *def = weakdef (h);
5592 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
5593 h->root.u.def.section = def->root.u.def.section;
5594 h->root.u.def.value = def->root.u.def.value;
5595 if (def->root.u.def.section == htab->elf.sdynbss
5596 || def->root.u.def.section == htab->elf.sdynrelro
5597 || def->root.u.def.section == htab->dynsbss)
5598 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5602 /* This is a reference to a symbol defined by a dynamic object which
5603 is not a function. */
5605 /* If we are creating a shared library, we must presume that the
5606 only references to the symbol are via the global offset table.
5607 For such cases we need not do anything here; the relocations will
5608 be handled correctly by relocate_section. */
5609 if (bfd_link_pic (info))
5611 h->protected_def = 0;
5615 /* If there are no references to this symbol that do not use the
5616 GOT, we don't need to generate a copy reloc. */
5617 if (!h->non_got_ref)
5619 h->protected_def = 0;
5623 /* Protected variables do not work with .dynbss. The copy in
5624 .dynbss won't be used by the shared library with the protected
5625 definition for the variable. Editing to PIC, or text relocations
5626 are preferable to an incorrect program. */
5627 if (h->protected_def)
5629 if (ELIMINATE_COPY_RELOCS
5630 && ppc_elf_hash_entry (h)->has_addr16_ha
5631 && ppc_elf_hash_entry (h)->has_addr16_lo
5632 && htab->params->pic_fixup == 0
5633 && info->disable_target_specific_optimizations <= 1)
5634 htab->params->pic_fixup = 1;
5638 /* If -z nocopyreloc was given, we won't generate them either. */
5639 if (info->nocopyreloc)
5642 /* If we don't find any dynamic relocs in read-only sections, then
5643 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5644 We can't do this if there are any small data relocations. This
5645 doesn't work on VxWorks, where we can not have dynamic
5646 relocations (other than copy and jump slot relocations) in an
5648 if (ELIMINATE_COPY_RELOCS
5649 && !ppc_elf_hash_entry (h)->has_sda_refs
5650 && !htab->is_vxworks
5652 && !alias_readonly_dynrelocs (h))
5655 /* We must allocate the symbol in our .dynbss section, which will
5656 become part of the .bss section of the executable. There will be
5657 an entry for this symbol in the .dynsym section. The dynamic
5658 object will contain position independent code, so all references
5659 from the dynamic object to this symbol will go through the global
5660 offset table. The dynamic linker will use the .dynsym entry to
5661 determine the address it must put in the global offset table, so
5662 both the dynamic object and the regular object will refer to the
5663 same memory location for the variable.
5665 Of course, if the symbol is referenced using SDAREL relocs, we
5666 must instead allocate it in .sbss. */
5667 if (ppc_elf_hash_entry (h)->has_sda_refs)
5669 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5670 s = htab->elf.sdynrelro;
5672 s = htab->elf.sdynbss;
5673 BFD_ASSERT (s != NULL);
5675 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5679 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5680 linker to copy the initial value out of the dynamic object
5681 and into the runtime process image. */
5682 if (ppc_elf_hash_entry (h)->has_sda_refs)
5683 srel = htab->relsbss;
5684 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5685 srel = htab->elf.sreldynrelro;
5687 srel = htab->elf.srelbss;
5688 BFD_ASSERT (srel != NULL);
5689 srel->size += sizeof (Elf32_External_Rela);
5693 /* We no longer want dyn_relocs. */
5694 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5695 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5698 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5699 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5700 specifying the addend on the plt relocation. For -fpic code, the sym
5701 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5702 xxxxxxxx.got2.plt_pic32.<callee>. */
5705 add_stub_sym (struct plt_entry *ent,
5706 struct elf_link_hash_entry *h,
5707 struct bfd_link_info *info)
5709 struct elf_link_hash_entry *sh;
5710 size_t len1, len2, len3;
5713 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5715 if (bfd_link_pic (info))
5716 stub = ".plt_pic32.";
5718 stub = ".plt_call32.";
5720 len1 = strlen (h->root.root.string);
5721 len2 = strlen (stub);
5724 len3 = strlen (ent->sec->name);
5725 name = bfd_malloc (len1 + len2 + len3 + 9);
5728 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5730 memcpy (name + 8, ent->sec->name, len3);
5731 memcpy (name + 8 + len3, stub, len2);
5732 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5733 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5736 if (sh->root.type == bfd_link_hash_new)
5738 sh->root.type = bfd_link_hash_defined;
5739 sh->root.u.def.section = htab->glink;
5740 sh->root.u.def.value = ent->glink_offset;
5741 sh->ref_regular = 1;
5742 sh->def_regular = 1;
5743 sh->ref_regular_nonweak = 1;
5744 sh->forced_local = 1;
5746 sh->root.linker_def = 1;
5751 /* Allocate NEED contiguous space in .got, and return the offset.
5752 Handles allocation of the got header when crossing 32k. */
5755 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5758 unsigned int max_before_header;
5760 if (htab->plt_type == PLT_VXWORKS)
5762 where = htab->elf.sgot->size;
5763 htab->elf.sgot->size += need;
5767 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5768 if (need <= htab->got_gap)
5770 where = max_before_header - htab->got_gap;
5771 htab->got_gap -= need;
5775 if (htab->elf.sgot->size + need > max_before_header
5776 && htab->elf.sgot->size <= max_before_header)
5778 htab->got_gap = max_before_header - htab->elf.sgot->size;
5779 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5781 where = htab->elf.sgot->size;
5782 htab->elf.sgot->size += need;
5788 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5789 TLS_LD is excluded because those go in a special GOT slot. */
5791 static inline unsigned int
5792 got_entries_needed (int tls_mask)
5795 if ((tls_mask & TLS_TLS) == 0)
5800 if ((tls_mask & TLS_GD) != 0)
5802 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5804 if ((tls_mask & TLS_DTPREL) != 0)
5810 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5811 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5814 static inline unsigned int
5815 got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
5817 /* All the entries we allocated need relocs.
5818 Except IE in executable with a local symbol. We could also omit
5819 the DTPREL reloc on the second word of a GD entry under the same
5820 condition as that for IE, but ld.so needs to differentiate
5821 LD and GD entries. */
5822 if (known && (tls_mask & TLS_TLS) != 0
5823 && (tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5825 return need * sizeof (Elf32_External_Rela) / 4;
5828 /* If H is undefined, make it dynamic if that makes sense. */
5831 ensure_undef_dynamic (struct bfd_link_info *info,
5832 struct elf_link_hash_entry *h)
5834 struct elf_link_hash_table *htab = elf_hash_table (info);
5836 if (htab->dynamic_sections_created
5837 && ((info->dynamic_undefined_weak != 0
5838 && h->root.type == bfd_link_hash_undefweak)
5839 || h->root.type == bfd_link_hash_undefined)
5842 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5843 return bfd_elf_link_record_dynamic_symbol (info, h);
5847 /* Allocate space in associated reloc sections for dynamic relocs. */
5850 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5852 struct bfd_link_info *info = inf;
5853 struct ppc_elf_link_hash_entry *eh;
5854 struct ppc_elf_link_hash_table *htab;
5855 struct elf_dyn_relocs *p;
5858 if (h->root.type == bfd_link_hash_indirect)
5861 htab = ppc_elf_hash_table (info);
5862 eh = (struct ppc_elf_link_hash_entry *) h;
5863 if (eh->elf.got.refcount > 0
5864 || (ELIMINATE_COPY_RELOCS
5865 && !eh->elf.def_regular
5866 && eh->elf.protected_def
5867 && eh->has_addr16_ha
5868 && eh->has_addr16_lo
5869 && htab->params->pic_fixup > 0))
5873 /* Make sure this symbol is output as a dynamic symbol. */
5874 if (!ensure_undef_dynamic (info, &eh->elf))
5878 if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
5880 if (!eh->elf.def_dynamic)
5881 /* We'll just use htab->tlsld_got.offset. This should
5882 always be the case. It's a little odd if we have
5883 a local dynamic reloc against a non-local symbol. */
5884 htab->tlsld_got.refcount += 1;
5888 need += got_entries_needed (eh->tls_mask);
5890 eh->elf.got.offset = (bfd_vma) -1;
5893 eh->elf.got.offset = allocate_got (htab, need);
5894 if ((bfd_link_pic (info)
5895 || (htab->elf.dynamic_sections_created
5896 && eh->elf.dynindx != -1
5897 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5898 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5901 bfd_boolean tprel_known = (bfd_link_executable (info)
5902 && SYMBOL_REFERENCES_LOCAL (info,
5905 need = got_relocs_needed (eh->tls_mask, need, tprel_known);
5906 if ((eh->tls_mask & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD)
5907 && eh->elf.def_dynamic)
5908 need -= sizeof (Elf32_External_Rela);
5909 rsec = htab->elf.srelgot;
5910 if (eh->elf.type == STT_GNU_IFUNC)
5911 rsec = htab->elf.irelplt;
5917 eh->elf.got.offset = (bfd_vma) -1;
5919 /* If no dynamic sections we can't have dynamic relocs, except for
5920 IFUNCs which are handled even in static executables. */
5921 if (!htab->elf.dynamic_sections_created
5922 && h->type != STT_GNU_IFUNC)
5923 eh->dyn_relocs = NULL;
5925 /* Discard relocs on undefined symbols that must be local. */
5926 else if (h->root.type == bfd_link_hash_undefined
5927 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5928 eh->dyn_relocs = NULL;
5930 /* Also discard relocs on undefined weak syms with non-default
5931 visibility, or when dynamic_undefined_weak says so. */
5932 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5933 eh->dyn_relocs = NULL;
5935 if (eh->dyn_relocs == NULL)
5938 /* In the shared -Bsymbolic case, discard space allocated for
5939 dynamic pc-relative relocs against symbols which turn out to be
5940 defined in regular objects. For the normal shared case, discard
5941 space for relocs that have become local due to symbol visibility
5943 else if (bfd_link_pic (info))
5945 /* Relocs that use pc_count are those that appear on a call insn,
5946 or certain REL relocs (see must_be_dyn_reloc) that can be
5947 generated via assembly. We want calls to protected symbols to
5948 resolve directly to the function rather than going via the plt.
5949 If people want function pointer comparisons to work as expected
5950 then they should avoid writing weird assembly. */
5951 if (SYMBOL_CALLS_LOCAL (info, h))
5953 struct elf_dyn_relocs **pp;
5955 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5957 p->count -= p->pc_count;
5966 if (htab->is_vxworks)
5968 struct elf_dyn_relocs **pp;
5970 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5972 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5979 if (eh->dyn_relocs != NULL)
5981 /* Make sure this symbol is output as a dynamic symbol. */
5982 if (!ensure_undef_dynamic (info, h))
5986 else if (ELIMINATE_COPY_RELOCS)
5988 /* For the non-pic case, discard space for relocs against
5989 symbols which turn out to need copy relocs or are not
5991 if (h->dynamic_adjusted
5993 && !ELF_COMMON_DEF_P (h)
5994 && !(h->protected_def
5995 && eh->has_addr16_ha
5996 && eh->has_addr16_lo
5997 && htab->params->pic_fixup > 0))
5999 /* Make sure this symbol is output as a dynamic symbol. */
6000 if (!ensure_undef_dynamic (info, h))
6003 if (h->dynindx == -1)
6004 eh->dyn_relocs = NULL;
6007 eh->dyn_relocs = NULL;
6010 /* Allocate space. */
6011 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6013 asection *sreloc = elf_section_data (p->sec)->sreloc;
6014 if (eh->elf.type == STT_GNU_IFUNC)
6015 sreloc = htab->elf.irelplt;
6016 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6019 /* Handle PLT relocs. Done last, after dynindx has settled. */
6020 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6021 if (dyn || h->type == STT_GNU_IFUNC)
6023 struct plt_entry *ent;
6024 bfd_boolean doneone = FALSE;
6025 bfd_vma plt_offset = 0, glink_offset = 0;
6027 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6028 if (ent->plt.refcount > 0)
6030 asection *s = htab->elf.splt;
6035 if (htab->plt_type == PLT_NEW || !dyn)
6039 plt_offset = s->size;
6042 ent->plt.offset = plt_offset;
6045 if (!doneone || bfd_link_pic (info))
6047 glink_offset = s->size;
6048 s->size += GLINK_ENTRY_SIZE (htab, h);
6051 && !bfd_link_pic (info)
6055 h->root.u.def.section = s;
6056 h->root.u.def.value = glink_offset;
6058 ent->glink_offset = glink_offset;
6060 if (htab->params->emit_stub_syms
6061 && !add_stub_sym (ent, h, info))
6068 /* If this is the first .plt entry, make room
6069 for the special first entry. */
6071 s->size += htab->plt_initial_entry_size;
6073 /* The PowerPC PLT is actually composed of two
6074 parts, the first part is 2 words (for a load
6075 and a jump), and then there is a remaining
6076 word available at the end. */
6077 plt_offset = (htab->plt_initial_entry_size
6078 + (htab->plt_slot_size
6080 - htab->plt_initial_entry_size)
6081 / htab->plt_entry_size)));
6083 /* If this symbol is not defined in a regular
6084 file, and we are not generating a shared
6085 library, then set the symbol to this location
6086 in the .plt. This is to avoid text
6087 relocations, and is required to make
6088 function pointers compare as equal between
6089 the normal executable and the shared library. */
6090 if (! bfd_link_pic (info)
6094 h->root.u.def.section = s;
6095 h->root.u.def.value = plt_offset;
6098 /* Make room for this entry. */
6099 s->size += htab->plt_entry_size;
6100 /* After the 8192nd entry, room for two entries
6102 if (htab->plt_type == PLT_OLD
6103 && (s->size - htab->plt_initial_entry_size)
6104 / htab->plt_entry_size
6105 > PLT_NUM_SINGLE_ENTRIES)
6106 s->size += htab->plt_entry_size;
6108 ent->plt.offset = plt_offset;
6111 /* We also need to make an entry in the .rela.plt section. */
6115 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6118 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6120 if (htab->plt_type == PLT_VXWORKS)
6122 /* Allocate space for the unloaded relocations. */
6123 if (!bfd_link_pic (info)
6124 && htab->elf.dynamic_sections_created)
6127 == (bfd_vma) htab->plt_initial_entry_size)
6129 htab->srelplt2->size
6130 += (sizeof (Elf32_External_Rela)
6131 * VXWORKS_PLTRESOLVE_RELOCS);
6134 htab->srelplt2->size
6135 += (sizeof (Elf32_External_Rela)
6136 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6139 /* Every PLT entry has an associated GOT entry in
6141 htab->elf.sgotplt->size += 4;
6148 ent->plt.offset = (bfd_vma) -1;
6152 h->plt.plist = NULL;
6158 h->plt.plist = NULL;
6165 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6166 read-only sections. */
6169 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
6173 if (h->root.type == bfd_link_hash_indirect)
6176 sec = readonly_dynrelocs (h);
6179 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
6181 info->flags |= DF_TEXTREL;
6182 info->callbacks->minfo
6183 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
6184 sec->owner, h->root.root.string, sec);
6186 /* Not an error, just cut short the traversal. */
6192 static const unsigned char glink_eh_frame_cie[] =
6194 0, 0, 0, 16, /* length. */
6195 0, 0, 0, 0, /* id. */
6196 1, /* CIE version. */
6197 'z', 'R', 0, /* Augmentation string. */
6198 4, /* Code alignment. */
6199 0x7c, /* Data alignment. */
6201 1, /* Augmentation size. */
6202 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6203 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6206 /* Set the sizes of the dynamic sections. */
6209 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6210 struct bfd_link_info *info)
6212 struct ppc_elf_link_hash_table *htab;
6218 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6221 htab = ppc_elf_hash_table (info);
6222 BFD_ASSERT (htab->elf.dynobj != NULL);
6224 if (elf_hash_table (info)->dynamic_sections_created)
6226 /* Set the contents of the .interp section to the interpreter. */
6227 if (bfd_link_executable (info) && !info->nointerp)
6229 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6230 BFD_ASSERT (s != NULL);
6231 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6232 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6236 if (htab->plt_type == PLT_OLD)
6237 htab->got_header_size = 16;
6238 else if (htab->plt_type == PLT_NEW)
6239 htab->got_header_size = 12;
6241 /* Set up .got offsets for local syms, and space for local dynamic
6243 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6245 bfd_signed_vma *local_got;
6246 bfd_signed_vma *end_local_got;
6247 struct plt_entry **local_plt;
6248 struct plt_entry **end_local_plt;
6250 bfd_size_type locsymcount;
6251 Elf_Internal_Shdr *symtab_hdr;
6253 if (!is_ppc_elf (ibfd))
6256 for (s = ibfd->sections; s != NULL; s = s->next)
6258 struct ppc_dyn_relocs *p;
6260 for (p = ((struct ppc_dyn_relocs *)
6261 elf_section_data (s)->local_dynrel);
6265 if (!bfd_is_abs_section (p->sec)
6266 && bfd_is_abs_section (p->sec->output_section))
6268 /* Input section has been discarded, either because
6269 it is a copy of a linkonce section or due to
6270 linker script /DISCARD/, so we'll be discarding
6273 else if (htab->is_vxworks
6274 && strcmp (p->sec->output_section->name,
6277 /* Relocations in vxworks .tls_vars sections are
6278 handled specially by the loader. */
6280 else if (p->count != 0)
6282 asection *sreloc = elf_section_data (p->sec)->sreloc;
6284 sreloc = htab->elf.irelplt;
6285 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6286 if ((p->sec->output_section->flags
6287 & (SEC_READONLY | SEC_ALLOC))
6288 == (SEC_READONLY | SEC_ALLOC))
6290 info->flags |= DF_TEXTREL;
6291 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
6292 p->sec->owner, p->sec);
6298 local_got = elf_local_got_refcounts (ibfd);
6302 symtab_hdr = &elf_symtab_hdr (ibfd);
6303 locsymcount = symtab_hdr->sh_info;
6304 end_local_got = local_got + locsymcount;
6305 local_plt = (struct plt_entry **) end_local_got;
6306 end_local_plt = local_plt + locsymcount;
6307 lgot_masks = (char *) end_local_plt;
6309 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6313 if ((*lgot_masks & (TLS_TLS | TLS_LD)) == (TLS_TLS | TLS_LD))
6314 htab->tlsld_got.refcount += 1;
6315 need = got_entries_needed (*lgot_masks);
6317 *local_got = (bfd_vma) -1;
6320 *local_got = allocate_got (htab, need);
6321 if (bfd_link_pic (info))
6324 bfd_boolean tprel_known = bfd_link_executable (info);
6326 need = got_relocs_needed (*lgot_masks, need, tprel_known);
6327 srel = htab->elf.srelgot;
6328 if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC)
6329 srel = htab->elf.irelplt;
6335 *local_got = (bfd_vma) -1;
6337 if (htab->is_vxworks)
6340 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6341 for (; local_plt < end_local_plt; ++local_plt)
6343 struct plt_entry *ent;
6344 bfd_boolean doneone = FALSE;
6345 bfd_vma plt_offset = 0, glink_offset = 0;
6347 for (ent = *local_plt; ent != NULL; ent = ent->next)
6348 if (ent->plt.refcount > 0)
6354 plt_offset = s->size;
6357 ent->plt.offset = plt_offset;
6360 if (!doneone || bfd_link_pic (info))
6362 glink_offset = s->size;
6363 s->size += GLINK_ENTRY_SIZE (htab, NULL);
6365 ent->glink_offset = glink_offset;
6369 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6374 ent->plt.offset = (bfd_vma) -1;
6378 /* Allocate space for global sym dynamic relocs. */
6379 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6381 if (htab->tlsld_got.refcount > 0)
6383 htab->tlsld_got.offset = allocate_got (htab, 8);
6384 if (bfd_link_pic (info))
6385 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6388 htab->tlsld_got.offset = (bfd_vma) -1;
6390 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6392 unsigned int g_o_t = 32768;
6394 /* If we haven't allocated the header, do so now. When we get here,
6395 for old plt/got the got size will be 0 to 32764 (not allocated),
6396 or 32780 to 65536 (header allocated). For new plt/got, the
6397 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6398 if (htab->elf.sgot->size <= 32768)
6400 g_o_t = htab->elf.sgot->size;
6401 if (htab->plt_type == PLT_OLD)
6403 htab->elf.sgot->size += htab->got_header_size;
6406 htab->elf.hgot->root.u.def.value = g_o_t;
6408 if (bfd_link_pic (info))
6410 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6412 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6413 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6415 if (info->emitrelocations)
6417 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6419 if (sda != NULL && sda->ref_regular)
6420 sda->root.u.def.section->flags |= SEC_KEEP;
6421 sda = htab->sdata[1].sym;
6422 if (sda != NULL && sda->ref_regular)
6423 sda->root.u.def.section->flags |= SEC_KEEP;
6426 if (htab->glink != NULL
6427 && htab->glink->size != 0
6428 && htab->elf.dynamic_sections_created)
6430 htab->glink_pltresolve = htab->glink->size;
6431 /* Space for the branch table. */
6433 += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
6434 /* Pad out to align the start of PLTresolve. */
6435 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6437 htab->glink->size += GLINK_PLTRESOLVE;
6439 if (htab->params->emit_stub_syms)
6441 struct elf_link_hash_entry *sh;
6442 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6443 TRUE, FALSE, FALSE);
6446 if (sh->root.type == bfd_link_hash_new)
6448 sh->root.type = bfd_link_hash_defined;
6449 sh->root.u.def.section = htab->glink;
6450 sh->root.u.def.value = htab->glink_pltresolve;
6451 sh->ref_regular = 1;
6452 sh->def_regular = 1;
6453 sh->ref_regular_nonweak = 1;
6454 sh->forced_local = 1;
6456 sh->root.linker_def = 1;
6458 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6459 TRUE, FALSE, FALSE);
6462 if (sh->root.type == bfd_link_hash_new)
6464 sh->root.type = bfd_link_hash_defined;
6465 sh->root.u.def.section = htab->glink;
6466 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6467 sh->ref_regular = 1;
6468 sh->def_regular = 1;
6469 sh->ref_regular_nonweak = 1;
6470 sh->forced_local = 1;
6472 sh->root.linker_def = 1;
6477 if (htab->glink != NULL
6478 && htab->glink->size != 0
6479 && htab->glink_eh_frame != NULL
6480 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6481 && _bfd_elf_eh_frame_present (info))
6483 s = htab->glink_eh_frame;
6484 s->size = sizeof (glink_eh_frame_cie) + 20;
6485 if (bfd_link_pic (info))
6488 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6493 /* We've now determined the sizes of the various dynamic sections.
6494 Allocate memory for them. */
6496 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6498 bfd_boolean strip_section = TRUE;
6500 if ((s->flags & SEC_LINKER_CREATED) == 0)
6503 if (s == htab->elf.splt
6504 || s == htab->elf.sgot)
6506 /* We'd like to strip these sections if they aren't needed, but if
6507 we've exported dynamic symbols from them we must leave them.
6508 It's too late to tell BFD to get rid of the symbols. */
6509 if (htab->elf.hplt != NULL)
6510 strip_section = FALSE;
6511 /* Strip this section if we don't need it; see the
6514 else if (s == htab->elf.iplt
6516 || s == htab->glink_eh_frame
6517 || s == htab->elf.sgotplt
6519 || s == htab->elf.sdynbss
6520 || s == htab->elf.sdynrelro
6521 || s == htab->dynsbss)
6523 /* Strip these too. */
6525 else if (s == htab->sdata[0].section
6526 || s == htab->sdata[1].section)
6528 strip_section = (s->flags & SEC_KEEP) == 0;
6530 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6535 /* Remember whether there are any relocation sections. */
6538 /* We use the reloc_count field as a counter if we need
6539 to copy relocs into the output file. */
6545 /* It's not one of our sections, so don't allocate space. */
6549 if (s->size == 0 && strip_section)
6551 /* If we don't need this section, strip it from the
6552 output file. This is mostly to handle .rela.bss and
6553 .rela.plt. We must create both sections in
6554 create_dynamic_sections, because they must be created
6555 before the linker maps input sections to output
6556 sections. The linker does that before
6557 adjust_dynamic_symbol is called, and it is that
6558 function which decides whether anything needs to go
6559 into these sections. */
6560 s->flags |= SEC_EXCLUDE;
6564 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6567 /* Allocate memory for the section contents. */
6568 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6569 if (s->contents == NULL)
6573 if (htab->elf.dynamic_sections_created)
6575 /* Add some entries to the .dynamic section. We fill in the
6576 values later, in ppc_elf_finish_dynamic_sections, but we
6577 must add the entries now so that we get the correct size for
6578 the .dynamic section. The DT_DEBUG entry is filled in by the
6579 dynamic linker and used by the debugger. */
6580 #define add_dynamic_entry(TAG, VAL) \
6581 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6583 if (bfd_link_executable (info))
6585 if (!add_dynamic_entry (DT_DEBUG, 0))
6589 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6591 if (!add_dynamic_entry (DT_PLTGOT, 0)
6592 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6593 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6594 || !add_dynamic_entry (DT_JMPREL, 0))
6598 if (htab->plt_type == PLT_NEW
6599 && htab->glink != NULL
6600 && htab->glink->size != 0)
6602 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6604 if (!htab->params->no_tls_get_addr_opt
6605 && htab->tls_get_addr != NULL
6606 && htab->tls_get_addr->plt.plist != NULL
6607 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6613 if (!add_dynamic_entry (DT_RELA, 0)
6614 || !add_dynamic_entry (DT_RELASZ, 0)
6615 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6619 /* If any dynamic relocs apply to a read-only section, then we
6620 need a DT_TEXTREL entry. */
6621 if ((info->flags & DF_TEXTREL) == 0)
6622 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6625 if ((info->flags & DF_TEXTREL) != 0)
6627 if (!add_dynamic_entry (DT_TEXTREL, 0))
6630 if (htab->is_vxworks
6631 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6634 #undef add_dynamic_entry
6636 if (htab->glink_eh_frame != NULL
6637 && htab->glink_eh_frame->contents != NULL)
6639 unsigned char *p = htab->glink_eh_frame->contents;
6642 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6643 /* CIE length (rewrite in case little-endian). */
6644 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6645 p += sizeof (glink_eh_frame_cie);
6647 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6648 bfd_put_32 (htab->elf.dynobj, val, p);
6651 val = p - htab->glink_eh_frame->contents;
6652 bfd_put_32 (htab->elf.dynobj, val, p);
6654 /* Offset to .glink. Set later. */
6657 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6662 if (bfd_link_pic (info)
6663 && htab->elf.dynamic_sections_created)
6665 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6667 *p++ = DW_CFA_advance_loc + adv;
6670 *p++ = DW_CFA_advance_loc1;
6673 else if (adv < 65536)
6675 *p++ = DW_CFA_advance_loc2;
6676 bfd_put_16 (htab->elf.dynobj, adv, p);
6681 *p++ = DW_CFA_advance_loc4;
6682 bfd_put_32 (htab->elf.dynobj, adv, p);
6685 *p++ = DW_CFA_register;
6688 *p++ = DW_CFA_advance_loc + 4;
6689 *p++ = DW_CFA_restore_extended;
6692 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6693 == htab->glink_eh_frame->size);
6699 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6700 if it looks like nothing is using them. */
6703 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6705 struct elf_link_hash_entry *sda = lsect->sym;
6707 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6711 s = bfd_get_section_by_name (output_bfd, lsect->name);
6712 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6714 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6715 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6717 sda->def_regular = 0;
6718 /* This is somewhat magic. See elf_link_output_extsym. */
6719 sda->ref_dynamic = 1;
6720 sda->forced_local = 0;
6727 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6729 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6733 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6734 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6739 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6742 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6744 if (h->plt.plist != NULL
6746 && (!h->pointer_equality_needed
6747 || !h->ref_regular_nonweak))
6750 return _bfd_elf_hash_symbol (h);
6753 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6755 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6756 used for some functions that are allowed to break the ABI). */
6757 static const int shared_stub_entry[] =
6759 0x7c0802a6, /* mflr 0 */
6760 0x429f0005, /* bcl 20, 31, .Lxxx */
6761 0x7d8802a6, /* mflr 12 */
6762 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6763 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6764 0x7c0803a6, /* mtlr 0 */
6765 0x7d8903a6, /* mtctr 12 */
6766 0x4e800420, /* bctr */
6769 static const int stub_entry[] =
6771 0x3d800000, /* lis 12,xxx@ha */
6772 0x398c0000, /* addi 12,12,xxx@l */
6773 0x7d8903a6, /* mtctr 12 */
6774 0x4e800420, /* bctr */
6777 struct ppc_elf_relax_info
6779 unsigned int workaround_size;
6780 unsigned int picfixup_size;
6783 /* This function implements long branch trampolines, and the ppc476
6784 icache bug workaround. Any section needing trampolines or patch
6785 space for the workaround has its size extended so that we can
6786 add trampolines at the end of the section. */
6789 ppc_elf_relax_section (bfd *abfd,
6791 struct bfd_link_info *link_info,
6794 struct one_branch_fixup
6796 struct one_branch_fixup *next;
6798 /* Final link, can use the symbol offset. For a
6799 relocatable link we use the symbol's index. */
6804 Elf_Internal_Shdr *symtab_hdr;
6805 bfd_byte *contents = NULL;
6806 Elf_Internal_Sym *isymbuf = NULL;
6807 Elf_Internal_Rela *internal_relocs = NULL;
6808 Elf_Internal_Rela *irel, *irelend = NULL;
6809 struct one_branch_fixup *branch_fixups = NULL;
6810 struct ppc_elf_relax_info *relax_info = NULL;
6811 unsigned changes = 0;
6812 bfd_boolean workaround_change;
6813 struct ppc_elf_link_hash_table *htab;
6814 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6816 bfd_boolean maybe_pasted;
6820 /* No need to do anything with non-alloc or non-code sections. */
6821 if ((isec->flags & SEC_ALLOC) == 0
6822 || (isec->flags & SEC_CODE) == 0
6823 || (isec->flags & SEC_LINKER_CREATED) != 0
6827 /* We cannot represent the required PIC relocs in the output, so don't
6828 do anything. The linker doesn't support mixing -shared and -r
6830 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6833 htab = ppc_elf_hash_table (link_info);
6837 isec->size = (isec->size + 3) & -4;
6838 if (isec->rawsize == 0)
6839 isec->rawsize = isec->size;
6840 trampbase = isec->size;
6842 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6843 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6844 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6846 if (htab->params->ppc476_workaround
6847 || htab->params->pic_fixup > 0)
6849 if (elf_section_data (isec)->sec_info == NULL)
6851 elf_section_data (isec)->sec_info
6852 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6853 if (elf_section_data (isec)->sec_info == NULL)
6856 relax_info = elf_section_data (isec)->sec_info;
6857 trampbase -= relax_info->workaround_size;
6860 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6861 || strcmp (isec->output_section->name, ".fini") == 0);
6862 /* Space for a branch around any trampolines. */
6863 trampoff = trampbase;
6864 if (maybe_pasted && trampbase == isec->rawsize)
6867 symtab_hdr = &elf_symtab_hdr (abfd);
6869 if (htab->params->branch_trampolines
6870 || htab->params->pic_fixup > 0)
6872 /* Get a copy of the native relocations. */
6873 if (isec->reloc_count != 0)
6875 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6876 link_info->keep_memory);
6877 if (internal_relocs == NULL)
6881 got2 = bfd_get_section_by_name (abfd, ".got2");
6883 irelend = internal_relocs + isec->reloc_count;
6884 for (irel = internal_relocs; irel < irelend; irel++)
6886 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6889 struct one_branch_fixup *f;
6890 size_t insn_offset = 0;
6891 bfd_vma max_branch_offset = 0, val;
6894 struct elf_link_hash_entry *h;
6895 struct plt_entry **plist;
6896 unsigned char sym_type;
6901 case R_PPC_LOCAL24PC:
6902 case R_PPC_PLTREL24:
6903 max_branch_offset = 1 << 25;
6907 case R_PPC_REL14_BRTAKEN:
6908 case R_PPC_REL14_BRNTAKEN:
6909 max_branch_offset = 1 << 15;
6912 case R_PPC_ADDR16_HA:
6913 if (htab->params->pic_fixup > 0)
6921 /* Get the value of the symbol referred to by the reloc. */
6923 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6925 /* A local symbol. */
6926 Elf_Internal_Sym *isym;
6928 /* Read this BFD's local symbols. */
6929 if (isymbuf == NULL)
6931 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6932 if (isymbuf == NULL)
6933 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6934 symtab_hdr->sh_info, 0,
6939 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6940 if (isym->st_shndx == SHN_UNDEF)
6941 tsec = bfd_und_section_ptr;
6942 else if (isym->st_shndx == SHN_ABS)
6943 tsec = bfd_abs_section_ptr;
6944 else if (isym->st_shndx == SHN_COMMON)
6945 tsec = bfd_com_section_ptr;
6947 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6949 toff = isym->st_value;
6950 sym_type = ELF_ST_TYPE (isym->st_info);
6954 /* Global symbol handling. */
6957 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6958 h = elf_sym_hashes (abfd)[indx];
6960 while (h->root.type == bfd_link_hash_indirect
6961 || h->root.type == bfd_link_hash_warning)
6962 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6964 if (h->root.type == bfd_link_hash_defined
6965 || h->root.type == bfd_link_hash_defweak)
6967 tsec = h->root.u.def.section;
6968 toff = h->root.u.def.value;
6970 else if (h->root.type == bfd_link_hash_undefined
6971 || h->root.type == bfd_link_hash_undefweak)
6973 tsec = bfd_und_section_ptr;
6974 toff = bfd_link_relocatable (link_info) ? indx : 0;
6979 /* If this branch is to __tls_get_addr then we may later
6980 optimise away the call. We won't be needing a long-
6981 branch stub in that case. */
6982 if (bfd_link_executable (link_info)
6983 && h == htab->tls_get_addr
6984 && irel != internal_relocs)
6986 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6987 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6988 unsigned int tls_mask = 0;
6990 /* The previous reloc should be one of R_PPC_TLSGD or
6991 R_PPC_TLSLD, or for older object files, a reloc
6992 on the __tls_get_addr arg setup insn. Get tls
6993 mask bits from the symbol on that reloc. */
6994 if (t_symndx < symtab_hdr->sh_info)
6996 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6998 if (local_got_offsets != NULL)
7000 struct plt_entry **local_plt = (struct plt_entry **)
7001 (local_got_offsets + symtab_hdr->sh_info);
7002 char *lgot_masks = (char *)
7003 (local_plt + symtab_hdr->sh_info);
7004 tls_mask = lgot_masks[t_symndx];
7009 struct elf_link_hash_entry *th
7010 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7012 while (th->root.type == bfd_link_hash_indirect
7013 || th->root.type == bfd_link_hash_warning)
7014 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7017 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7020 /* The mask bits tell us if the call will be
7022 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7023 && (t_rtype == R_PPC_TLSGD
7024 || t_rtype == R_PPC_GOT_TLSGD16
7025 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7027 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7028 && (t_rtype == R_PPC_TLSLD
7029 || t_rtype == R_PPC_GOT_TLSLD16
7030 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7037 if (r_type == R_PPC_ADDR16_HA)
7042 && ppc_elf_hash_entry (h)->has_addr16_ha
7043 && ppc_elf_hash_entry (h)->has_addr16_lo)
7044 picfixup_size += 12;
7048 /* The condition here under which we call find_plt_ent must
7049 match that in relocate_section. If we call find_plt_ent here
7050 but not in relocate_section, or vice versa, then the branch
7051 destination used here may be incorrect. */
7055 /* We know is_branch_reloc (r_type) is true. */
7056 if (h->type == STT_GNU_IFUNC
7057 || r_type == R_PPC_PLTREL24)
7058 plist = &h->plt.plist;
7060 else if (sym_type == STT_GNU_IFUNC
7061 && elf_local_got_offsets (abfd) != NULL)
7063 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7064 struct plt_entry **local_plt = (struct plt_entry **)
7065 (local_got_offsets + symtab_hdr->sh_info);
7066 plist = local_plt + ELF32_R_SYM (irel->r_info);
7071 struct plt_entry *ent;
7073 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7074 addend = irel->r_addend;
7075 ent = find_plt_ent (plist, got2, addend);
7078 if (htab->plt_type == PLT_NEW
7080 || !htab->elf.dynamic_sections_created
7081 || h->dynindx == -1)
7084 toff = ent->glink_offset;
7088 tsec = htab->elf.splt;
7089 toff = ent->plt.offset;
7094 /* If the branch and target are in the same section, you have
7095 no hope of adding stubs. We'll error out later should the
7100 /* There probably isn't any reason to handle symbols in
7101 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7102 attribute for a code section, and we are only looking at
7103 branches. However, implement it correctly here as a
7104 reference for other target relax_section functions. */
7105 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7107 /* At this stage in linking, no SEC_MERGE symbol has been
7108 adjusted, so all references to such symbols need to be
7109 passed through _bfd_merged_section_offset. (Later, in
7110 relocate_section, all SEC_MERGE symbols *except* for
7111 section symbols have been adjusted.)
7113 gas may reduce relocations against symbols in SEC_MERGE
7114 sections to a relocation against the section symbol when
7115 the original addend was zero. When the reloc is against
7116 a section symbol we should include the addend in the
7117 offset passed to _bfd_merged_section_offset, since the
7118 location of interest is the original symbol. On the
7119 other hand, an access to "sym+addend" where "sym" is not
7120 a section symbol should not include the addend; Such an
7121 access is presumed to be an offset from "sym"; The
7122 location of interest is just "sym". */
7123 if (sym_type == STT_SECTION)
7124 toff += irel->r_addend;
7127 = _bfd_merged_section_offset (abfd, &tsec,
7128 elf_section_data (tsec)->sec_info,
7131 if (sym_type != STT_SECTION)
7132 toff += irel->r_addend;
7134 /* PLTREL24 addends are special. */
7135 else if (r_type != R_PPC_PLTREL24)
7136 toff += irel->r_addend;
7138 /* Attempted -shared link of non-pic code loses. */
7139 if ((!bfd_link_relocatable (link_info)
7140 && tsec == bfd_und_section_ptr)
7141 || tsec->output_section == NULL
7142 || (tsec->owner != NULL
7143 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7146 roff = irel->r_offset;
7148 /* If the branch is in range, no need to do anything. */
7149 if (tsec != bfd_und_section_ptr
7150 && (!bfd_link_relocatable (link_info)
7151 /* A relocatable link may have sections moved during
7152 final link, so do not presume they remain in range. */
7153 || tsec->output_section == isec->output_section))
7155 bfd_vma symaddr, reladdr;
7157 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7158 reladdr = isec->output_section->vma + isec->output_offset + roff;
7159 if (symaddr - reladdr + max_branch_offset
7160 < 2 * max_branch_offset)
7164 /* Look for an existing fixup to this address. */
7165 for (f = branch_fixups; f ; f = f->next)
7166 if (f->tsec == tsec && f->toff == toff)
7172 unsigned long stub_rtype;
7174 val = trampoff - roff;
7175 if (val >= max_branch_offset)
7176 /* Oh dear, we can't reach a trampoline. Don't try to add
7177 one. We'll report an error later. */
7180 if (bfd_link_pic (link_info))
7182 size = 4 * ARRAY_SIZE (shared_stub_entry);
7187 size = 4 * ARRAY_SIZE (stub_entry);
7190 stub_rtype = R_PPC_RELAX;
7191 if (tsec == htab->elf.splt
7192 || tsec == htab->glink)
7194 stub_rtype = R_PPC_RELAX_PLT;
7195 if (r_type == R_PPC_PLTREL24)
7196 stub_rtype = R_PPC_RELAX_PLTREL24;
7199 /* Hijack the old relocation. Since we need two
7200 relocations for this use a "composite" reloc. */
7201 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7203 irel->r_offset = trampoff + insn_offset;
7204 if (r_type == R_PPC_PLTREL24
7205 && stub_rtype != R_PPC_RELAX_PLTREL24)
7208 /* Record the fixup so we don't do it again this section. */
7209 f = bfd_malloc (sizeof (*f));
7210 f->next = branch_fixups;
7213 f->trampoff = trampoff;
7221 val = f->trampoff - roff;
7222 if (val >= max_branch_offset)
7225 /* Nop out the reloc, since we're finalizing things here. */
7226 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7229 /* Get the section contents. */
7230 if (contents == NULL)
7232 /* Get cached copy if it exists. */
7233 if (elf_section_data (isec)->this_hdr.contents != NULL)
7234 contents = elf_section_data (isec)->this_hdr.contents;
7235 /* Go get them off disk. */
7236 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7240 /* Fix up the existing branch to hit the trampoline. */
7241 hit_addr = contents + roff;
7245 case R_PPC_LOCAL24PC:
7246 case R_PPC_PLTREL24:
7247 t0 = bfd_get_32 (abfd, hit_addr);
7249 t0 |= val & 0x3fffffc;
7250 bfd_put_32 (abfd, t0, hit_addr);
7254 case R_PPC_REL14_BRTAKEN:
7255 case R_PPC_REL14_BRNTAKEN:
7256 t0 = bfd_get_32 (abfd, hit_addr);
7259 bfd_put_32 (abfd, t0, hit_addr);
7264 while (branch_fixups != NULL)
7266 struct one_branch_fixup *f = branch_fixups;
7267 branch_fixups = branch_fixups->next;
7272 workaround_change = FALSE;
7274 if (htab->params->ppc476_workaround
7275 && (!bfd_link_relocatable (link_info)
7276 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7278 bfd_vma addr, end_addr;
7279 unsigned int crossings;
7280 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7282 addr = isec->output_section->vma + isec->output_offset;
7283 end_addr = addr + trampoff;
7285 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7288 /* Keep space aligned, to ensure the patch code itself does
7289 not cross a page. Don't decrease size calculated on a
7290 previous pass as otherwise we might never settle on a layout. */
7291 newsize = 15 - ((end_addr - 1) & 15);
7292 newsize += crossings * 16;
7293 if (relax_info->workaround_size < newsize)
7295 relax_info->workaround_size = newsize;
7296 workaround_change = TRUE;
7298 /* Ensure relocate_section is called. */
7299 isec->flags |= SEC_RELOC;
7301 newsize = trampoff + relax_info->workaround_size;
7304 if (htab->params->pic_fixup > 0)
7306 picfixup_size -= relax_info->picfixup_size;
7307 if (picfixup_size != 0)
7308 relax_info->picfixup_size += picfixup_size;
7309 newsize += relax_info->picfixup_size;
7312 if (changes != 0 || picfixup_size != 0 || workaround_change)
7313 isec->size = newsize;
7316 && symtab_hdr->contents != (unsigned char *) isymbuf)
7318 if (! link_info->keep_memory)
7322 /* Cache the symbols for elf_link_input_bfd. */
7323 symtab_hdr->contents = (unsigned char *) isymbuf;
7327 if (contents != NULL
7328 && elf_section_data (isec)->this_hdr.contents != contents)
7330 if (!changes && !link_info->keep_memory)
7334 /* Cache the section contents for elf_link_input_bfd. */
7335 elf_section_data (isec)->this_hdr.contents = contents;
7339 changes += picfixup_size;
7342 /* Append sufficient NOP relocs so we can write out relocation
7343 information for the trampolines. */
7344 Elf_Internal_Shdr *rel_hdr;
7345 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7346 * sizeof (*new_relocs));
7351 memcpy (new_relocs, internal_relocs,
7352 isec->reloc_count * sizeof (*new_relocs));
7353 for (ix = changes; ix--;)
7355 irel = new_relocs + ix + isec->reloc_count;
7357 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7359 if (internal_relocs != elf_section_data (isec)->relocs)
7360 free (internal_relocs);
7361 elf_section_data (isec)->relocs = new_relocs;
7362 isec->reloc_count += changes;
7363 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7364 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7366 else if (internal_relocs != NULL
7367 && elf_section_data (isec)->relocs != internal_relocs)
7368 free (internal_relocs);
7370 *again = changes != 0 || workaround_change;
7374 while (branch_fixups != NULL)
7376 struct one_branch_fixup *f = branch_fixups;
7377 branch_fixups = branch_fixups->next;
7380 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7382 if (contents != NULL
7383 && elf_section_data (isec)->this_hdr.contents != contents)
7385 if (internal_relocs != NULL
7386 && elf_section_data (isec)->relocs != internal_relocs)
7387 free (internal_relocs);
7391 /* What to do when ld finds relocations against symbols defined in
7392 discarded sections. */
7395 ppc_elf_action_discarded (asection *sec)
7397 if (strcmp (".fixup", sec->name) == 0)
7400 if (strcmp (".got2", sec->name) == 0)
7403 return _bfd_elf_default_action_discarded (sec);
7406 /* Fill in the address for a pointer generated in a linker section. */
7409 elf_finish_pointer_linker_section (bfd *input_bfd,
7410 elf_linker_section_t *lsect,
7411 struct elf_link_hash_entry *h,
7413 const Elf_Internal_Rela *rel)
7415 elf_linker_section_pointers_t *linker_section_ptr;
7417 BFD_ASSERT (lsect != NULL);
7421 /* Handle global symbol. */
7422 struct ppc_elf_link_hash_entry *eh;
7424 eh = (struct ppc_elf_link_hash_entry *) h;
7425 BFD_ASSERT (eh->elf.def_regular);
7426 linker_section_ptr = eh->linker_section_pointer;
7430 /* Handle local symbol. */
7431 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7433 BFD_ASSERT (is_ppc_elf (input_bfd));
7434 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7435 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7438 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7441 BFD_ASSERT (linker_section_ptr != NULL);
7443 /* Offset will always be a multiple of four, so use the bottom bit
7444 as a "written" flag. */
7445 if ((linker_section_ptr->offset & 1) == 0)
7447 bfd_put_32 (lsect->section->owner,
7448 relocation + linker_section_ptr->addend,
7449 lsect->section->contents + linker_section_ptr->offset);
7450 linker_section_ptr->offset += 1;
7453 relocation = (lsect->section->output_section->vma
7454 + lsect->section->output_offset
7455 + linker_section_ptr->offset - 1
7456 - SYM_VAL (lsect->sym));
7460 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7461 lsect->name, (long) relocation, (long) relocation);
7467 #define PPC_LO(v) ((v) & 0xffff)
7468 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7469 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7472 write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
7473 asection *plt_sec, unsigned char *p,
7474 struct bfd_link_info *info)
7476 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7477 bfd *output_bfd = info->output_bfd;
7479 unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
7482 && h == htab->tls_get_addr
7483 && !htab->params->no_tls_get_addr_opt)
7485 bfd_put_32 (output_bfd, LWZ_11_3, p);
7487 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
7489 bfd_put_32 (output_bfd, MR_0_3, p);
7491 bfd_put_32 (output_bfd, CMPWI_11_0, p);
7493 bfd_put_32 (output_bfd, ADD_3_12_2, p);
7495 bfd_put_32 (output_bfd, BEQLR, p);
7497 bfd_put_32 (output_bfd, MR_3_0, p);
7499 bfd_put_32 (output_bfd, NOP, p);
7503 plt = ((ent->plt.offset & ~1)
7504 + plt_sec->output_section->vma
7505 + plt_sec->output_offset);
7507 if (bfd_link_pic (info))
7511 if (ent->addend >= 32768)
7513 + ent->sec->output_section->vma
7514 + ent->sec->output_offset);
7515 else if (htab->elf.hgot != NULL)
7516 got = SYM_VAL (htab->elf.hgot);
7520 if (plt + 0x8000 < 0x10000)
7521 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7524 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7526 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7531 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7533 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7536 bfd_put_32 (output_bfd, MTCTR_11, p);
7538 bfd_put_32 (output_bfd, BCTR, p);
7542 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7547 /* Return true if symbol is defined statically. */
7550 is_static_defined (struct elf_link_hash_entry *h)
7552 return ((h->root.type == bfd_link_hash_defined
7553 || h->root.type == bfd_link_hash_defweak)
7554 && h->root.u.def.section != NULL
7555 && h->root.u.def.section->output_section != NULL);
7558 /* If INSN is an opcode that may be used with an @tls operand, return
7559 the transformed insn for TLS optimisation, otherwise return 0. If
7560 REG is non-zero only match an insn with RB or RA equal to REG. */
7563 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7567 if ((insn & (0x3f << 26)) != 31 << 26)
7570 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7571 rtra = insn & ((1 << 26) - (1 << 16));
7572 else if (((insn >> 16) & 0x1f) == reg)
7573 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7577 if ((insn & (0x3ff << 1)) == 266 << 1)
7580 else if ((insn & (0x1f << 1)) == 23 << 1
7581 && ((insn & (0x1f << 6)) < 14 << 6
7582 || ((insn & (0x1f << 6)) >= 16 << 6
7583 && (insn & (0x1f << 6)) < 24 << 6)))
7584 /* load and store indexed -> dform. */
7585 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7586 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7587 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7588 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7589 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7591 insn = (58 << 26) | 2;
7598 /* If INSN is an opcode that may be used with an @tprel operand, return
7599 the transformed insn for an undefined weak symbol, ie. with the
7600 thread pointer REG operand removed. Otherwise return 0. */
7603 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7605 if ((insn & (0x1f << 16)) == reg << 16
7606 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7607 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7608 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7609 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7610 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7611 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7612 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7613 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7614 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7615 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7616 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7617 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7618 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7619 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7620 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7621 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7623 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7624 && ((insn & 3) == 0 || (insn & 3) == 3))))
7626 insn &= ~(0x1f << 16);
7628 else if ((insn & (0x1f << 21)) == reg << 21
7629 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7630 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7631 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7633 insn &= ~(0x1f << 21);
7634 insn |= (insn & (0x1f << 16)) << 5;
7635 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7636 insn -= 2 >> 26; /* convert to ori,oris */
7644 is_insn_ds_form (unsigned int insn)
7646 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7647 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7648 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7649 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7653 is_insn_dq_form (unsigned int insn)
7655 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7656 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7657 && (insn & 3) == 1));
7660 /* The RELOCATE_SECTION function is called by the ELF backend linker
7661 to handle the relocations for a section.
7663 The relocs are always passed as Rela structures; if the section
7664 actually uses Rel structures, the r_addend field will always be
7667 This function is responsible for adjust the section contents as
7668 necessary, and (if using Rela relocs and generating a
7669 relocatable output file) adjusting the reloc addend as
7672 This function does not have to worry about setting the reloc
7673 address or the reloc symbol index.
7675 LOCAL_SYMS is a pointer to the swapped in local symbols.
7677 LOCAL_SECTIONS is an array giving the section in the input file
7678 corresponding to the st_shndx field of each local symbol.
7680 The global hash table entry for the global symbols can be found
7681 via elf_sym_hashes (input_bfd).
7683 When generating relocatable output, this function must handle
7684 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7685 going to be the section symbol corresponding to the output
7686 section, which means that the addend must be adjusted
7690 ppc_elf_relocate_section (bfd *output_bfd,
7691 struct bfd_link_info *info,
7693 asection *input_section,
7695 Elf_Internal_Rela *relocs,
7696 Elf_Internal_Sym *local_syms,
7697 asection **local_sections)
7699 Elf_Internal_Shdr *symtab_hdr;
7700 struct elf_link_hash_entry **sym_hashes;
7701 struct ppc_elf_link_hash_table *htab;
7702 Elf_Internal_Rela *rel;
7703 Elf_Internal_Rela *wrel;
7704 Elf_Internal_Rela *relend;
7705 Elf_Internal_Rela outrel;
7707 bfd_vma *local_got_offsets;
7708 bfd_boolean ret = TRUE;
7709 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7710 bfd_boolean is_vxworks_tls;
7711 unsigned int picfixup_size = 0;
7712 struct ppc_elf_relax_info *relax_info = NULL;
7715 _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
7716 "%ld relocations%s",
7717 input_bfd, input_section,
7718 (long) input_section->reloc_count,
7719 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7722 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7724 /* Initialize howto table if not already done. */
7725 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7726 ppc_elf_howto_init ();
7728 htab = ppc_elf_hash_table (info);
7729 local_got_offsets = elf_local_got_offsets (input_bfd);
7730 symtab_hdr = &elf_symtab_hdr (input_bfd);
7731 sym_hashes = elf_sym_hashes (input_bfd);
7732 /* We have to handle relocations in vxworks .tls_vars sections
7733 specially, because the dynamic loader is 'weird'. */
7734 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7735 && !strcmp (input_section->output_section->name,
7737 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7738 relax_info = elf_section_data (input_section)->sec_info;
7739 rel = wrel = relocs;
7740 relend = relocs + input_section->reloc_count;
7741 for (; rel < relend; wrel++, rel++)
7743 enum elf_ppc_reloc_type r_type;
7745 bfd_reloc_status_type r;
7746 Elf_Internal_Sym *sym;
7748 struct elf_link_hash_entry *h;
7749 const char *sym_name;
7750 reloc_howto_type *howto;
7751 unsigned long r_symndx;
7753 bfd_vma branch_bit, from;
7754 bfd_boolean unresolved_reloc;
7756 unsigned int tls_type, tls_mask, tls_gd;
7757 struct plt_entry **ifunc, **plt_list;
7758 struct reloc_howto_struct alt_howto;
7761 r_type = ELF32_R_TYPE (rel->r_info);
7765 unresolved_reloc = FALSE;
7767 r_symndx = ELF32_R_SYM (rel->r_info);
7769 if (r_symndx < symtab_hdr->sh_info)
7771 sym = local_syms + r_symndx;
7772 sec = local_sections[r_symndx];
7773 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7775 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7779 bfd_boolean ignored;
7781 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7782 r_symndx, symtab_hdr, sym_hashes,
7784 unresolved_reloc, warned, ignored);
7786 sym_name = h->root.root.string;
7789 if (sec != NULL && discarded_section (sec))
7791 /* For relocs against symbols from removed linkonce sections,
7792 or sections discarded by a linker script, we just want the
7793 section contents zeroed. Avoid any special processing. */
7795 if (r_type < R_PPC_max)
7796 howto = ppc_elf_howto_table[r_type];
7798 _bfd_clear_contents (howto, input_bfd, input_section,
7799 contents + rel->r_offset);
7800 wrel->r_offset = rel->r_offset;
7804 /* For ld -r, remove relocations in debug sections against
7805 symbols defined in discarded sections. Not done for
7806 non-debug to preserve relocs in .eh_frame which the
7807 eh_frame editing code expects to be present. */
7808 if (bfd_link_relocatable (info)
7809 && (input_section->flags & SEC_DEBUGGING))
7815 if (bfd_link_relocatable (info))
7818 && r_type == R_PPC_PLTREL24
7819 && rel->r_addend != 0)
7821 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7822 addend specifies the GOT pointer offset within .got2. */
7823 rel->r_addend += got2->output_offset;
7825 if (r_type != R_PPC_RELAX_PLT
7826 && r_type != R_PPC_RELAX_PLTREL24
7827 && r_type != R_PPC_RELAX)
7831 /* TLS optimizations. Replace instruction sequences and relocs
7832 based on information we collected in tls_optimize. We edit
7833 RELOCS so that --emit-relocs will output something sensible
7834 for the final instruction stream. */
7838 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7839 else if (local_got_offsets != NULL)
7841 struct plt_entry **local_plt;
7844 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7845 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7846 tls_mask = lgot_masks[r_symndx];
7849 /* Ensure reloc mapping code below stays sane. */
7850 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7851 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7852 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7853 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7854 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7855 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7856 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7857 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7864 case R_PPC_GOT_TPREL16:
7865 case R_PPC_GOT_TPREL16_LO:
7866 if ((tls_mask & TLS_TLS) != 0
7867 && (tls_mask & TLS_TPREL) == 0)
7871 insn = bfd_get_32 (input_bfd,
7872 contents + rel->r_offset - d_offset);
7874 insn |= 0x3c020000; /* addis 0,2,0 */
7875 bfd_put_32 (input_bfd, insn,
7876 contents + rel->r_offset - d_offset);
7877 r_type = R_PPC_TPREL16_HA;
7878 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7883 if ((tls_mask & TLS_TLS) != 0
7884 && (tls_mask & TLS_TPREL) == 0)
7888 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7889 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7892 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7893 r_type = R_PPC_TPREL16_LO;
7894 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7896 /* Was PPC_TLS which sits on insn boundary, now
7897 PPC_TPREL16_LO which is at low-order half-word. */
7898 rel->r_offset += d_offset;
7902 case R_PPC_GOT_TLSGD16_HI:
7903 case R_PPC_GOT_TLSGD16_HA:
7904 tls_gd = TLS_TPRELGD;
7905 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7909 case R_PPC_GOT_TLSLD16_HI:
7910 case R_PPC_GOT_TLSLD16_HA:
7911 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7914 if ((tls_mask & tls_gd) != 0)
7915 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7916 + R_PPC_GOT_TPREL16);
7919 rel->r_offset -= d_offset;
7920 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7921 r_type = R_PPC_NONE;
7923 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7927 case R_PPC_GOT_TLSGD16:
7928 case R_PPC_GOT_TLSGD16_LO:
7929 tls_gd = TLS_TPRELGD;
7930 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7934 case R_PPC_GOT_TLSLD16:
7935 case R_PPC_GOT_TLSLD16_LO:
7936 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7938 unsigned int insn1, insn2;
7942 offset = (bfd_vma) -1;
7943 /* If not using the newer R_PPC_TLSGD/LD to mark
7944 __tls_get_addr calls, we must trust that the call
7945 stays with its arg setup insns, ie. that the next
7946 reloc is the __tls_get_addr call associated with
7947 the current reloc. Edit both insns. */
7948 if (input_section->has_tls_get_addr_call
7950 && branch_reloc_hash_match (input_bfd, rel + 1,
7951 htab->tls_get_addr))
7952 offset = rel[1].r_offset;
7953 /* We read the low GOT_TLS insn because we need to keep
7954 the destination reg. It may be something other than
7955 the usual r3, and moved to r3 before the call by
7956 intervening code. */
7957 insn1 = bfd_get_32 (input_bfd,
7958 contents + rel->r_offset - d_offset);
7959 if ((tls_mask & tls_gd) != 0)
7962 insn1 &= (0x1f << 21) | (0x1f << 16);
7963 insn1 |= 32 << 26; /* lwz */
7964 if (offset != (bfd_vma) -1)
7966 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7967 insn2 = 0x7c631214; /* add 3,3,2 */
7968 bfd_put_32 (input_bfd, insn2, contents + offset);
7970 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7971 + R_PPC_GOT_TPREL16);
7972 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7977 insn1 &= 0x1f << 21;
7978 insn1 |= 0x3c020000; /* addis r,2,0 */
7981 /* Was an LD reloc. */
7983 r_symndx < symtab_hdr->sh_info;
7985 if (local_sections[r_symndx] == sec)
7987 if (r_symndx >= symtab_hdr->sh_info)
7988 r_symndx = STN_UNDEF;
7989 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7990 if (r_symndx != STN_UNDEF)
7991 rel->r_addend -= (local_syms[r_symndx].st_value
7992 + sec->output_offset
7993 + sec->output_section->vma);
7995 r_type = R_PPC_TPREL16_HA;
7996 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7997 if (offset != (bfd_vma) -1)
7999 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8000 rel[1].r_offset = offset + d_offset;
8001 rel[1].r_addend = rel->r_addend;
8002 insn2 = 0x38630000; /* addi 3,3,0 */
8003 bfd_put_32 (input_bfd, insn2, contents + offset);
8006 bfd_put_32 (input_bfd, insn1,
8007 contents + rel->r_offset - d_offset);
8010 /* We changed the symbol on an LD reloc. Start over
8011 in order to get h, sym, sec etc. right. */
8018 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
8019 && rel + 1 < relend)
8022 bfd_vma offset = rel->r_offset;
8024 if ((tls_mask & TLS_TPRELGD) != 0)
8027 r_type = R_PPC_NONE;
8028 insn2 = 0x7c631214; /* add 3,3,2 */
8033 r_type = R_PPC_TPREL16_LO;
8034 rel->r_offset += d_offset;
8035 insn2 = 0x38630000; /* addi 3,3,0 */
8037 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8038 bfd_put_32 (input_bfd, insn2, contents + offset);
8039 /* Zap the reloc on the _tls_get_addr call too. */
8040 BFD_ASSERT (offset == rel[1].r_offset);
8041 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8046 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
8047 && rel + 1 < relend)
8052 r_symndx < symtab_hdr->sh_info;
8054 if (local_sections[r_symndx] == sec)
8056 if (r_symndx >= symtab_hdr->sh_info)
8057 r_symndx = STN_UNDEF;
8058 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8059 if (r_symndx != STN_UNDEF)
8060 rel->r_addend -= (local_syms[r_symndx].st_value
8061 + sec->output_offset
8062 + sec->output_section->vma);
8064 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8065 rel->r_offset += d_offset;
8066 insn2 = 0x38630000; /* addi 3,3,0 */
8067 bfd_put_32 (input_bfd, insn2,
8068 contents + rel->r_offset - d_offset);
8069 /* Zap the reloc on the _tls_get_addr call too. */
8070 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8071 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8077 /* Handle other relocations that tweak non-addend part of insn. */
8084 /* Branch taken prediction relocations. */
8085 case R_PPC_ADDR14_BRTAKEN:
8086 case R_PPC_REL14_BRTAKEN:
8087 branch_bit = BRANCH_PREDICT_BIT;
8090 /* Branch not taken prediction relocations. */
8091 case R_PPC_ADDR14_BRNTAKEN:
8092 case R_PPC_REL14_BRNTAKEN:
8096 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8097 insn &= ~BRANCH_PREDICT_BIT;
8100 from = (rel->r_offset
8101 + input_section->output_offset
8102 + input_section->output_section->vma);
8104 /* Invert 'y' bit if not the default. */
8105 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8106 insn ^= BRANCH_PREDICT_BIT;
8108 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8112 case R_PPC_PLT16_HA:
8116 insn = bfd_get_32 (input_bfd,
8117 contents + rel->r_offset - d_offset);
8118 if ((insn & (0x3f << 26)) == 15u << 26
8119 && (insn & (0x1f << 16)) != 0)
8121 if (!bfd_link_pic (info))
8123 /* Convert addis to lis. */
8124 insn &= ~(0x1f << 16);
8125 bfd_put_32 (input_bfd, insn,
8126 contents + rel->r_offset - d_offset);
8129 else if (bfd_link_pic (info))
8130 info->callbacks->einfo
8131 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8132 input_bfd, input_section, rel->r_offset,
8133 "R_PPC_PLT16_HA", insn);
8138 if (ELIMINATE_COPY_RELOCS
8142 && ppc_elf_hash_entry (h)->has_addr16_ha
8143 && ppc_elf_hash_entry (h)->has_addr16_lo
8144 && htab->params->pic_fixup > 0)
8146 /* Convert lis;addi or lis;load/store accessing a protected
8147 variable defined in a shared library to PIC. */
8150 if (r_type == R_PPC_ADDR16_HA)
8152 insn = bfd_get_32 (input_bfd,
8153 contents + rel->r_offset - d_offset);
8154 if ((insn & (0x3f << 26)) == (15u << 26)
8155 && (insn & (0x1f << 16)) == 0 /* lis */)
8161 p = (contents + input_section->size
8162 - relax_info->workaround_size
8163 - relax_info->picfixup_size
8165 off = (p - contents) - (rel->r_offset - d_offset);
8166 if (off > 0x1fffffc || (off & 3) != 0)
8167 info->callbacks->einfo
8168 (_("%H: fixup branch overflow\n"),
8169 input_bfd, input_section, rel->r_offset);
8171 bfd_put_32 (input_bfd, B | off,
8172 contents + rel->r_offset - d_offset);
8173 got_addr = (htab->elf.sgot->output_section->vma
8174 + htab->elf.sgot->output_offset
8175 + (h->got.offset & ~1));
8176 wrel->r_offset = (p - contents) + d_offset;
8177 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8178 wrel->r_addend = got_addr;
8180 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8181 bfd_put_32 (input_bfd, insn, p);
8183 /* Convert lis to lwz, loading address from GOT. */
8185 insn ^= (32u ^ 15u) << 26;
8186 insn |= (insn & (0x1f << 21)) >> 5;
8187 insn |= got_addr & 0xffff;
8188 bfd_put_32 (input_bfd, insn, p + 4);
8190 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8191 picfixup_size += 12;
8193 /* Use one of the spare relocs, so --emit-relocs
8194 output is reasonable. */
8195 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8197 rel->r_offset = wrel[-1].r_offset + 4;
8198 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8199 rel->r_addend = wrel[-1].r_addend;
8201 /* Continue on as if we had a got reloc, to output
8203 r_type = R_PPC_GOT16_LO;
8207 /* xgettext:c-format */
8208 (_("%pB(%pA+%#" PRIx64 "): error: "
8209 "%s with unexpected instruction %#x"),
8210 input_bfd, input_section, (uint64_t) rel->r_offset,
8211 "R_PPC_ADDR16_HA", insn);
8213 else if (r_type == R_PPC_ADDR16_LO)
8215 insn = bfd_get_32 (input_bfd,
8216 contents + rel->r_offset - d_offset);
8217 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8218 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8219 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8220 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8221 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8222 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8223 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8224 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8225 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8226 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8227 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8228 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8229 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8230 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8231 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8233 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8234 && ((insn & 3) == 0 || (insn & 3) == 3)))
8236 /* Arrange to apply the reloc addend, if any. */
8238 unresolved_reloc = FALSE;
8239 rel->r_info = ELF32_R_INFO (0, r_type);
8243 /* xgettext:c-format */
8244 (_("%pB(%pA+%#" PRIx64 "): error: "
8245 "%s with unexpected instruction %#x"),
8246 input_bfd, input_section, (uint64_t) rel->r_offset,
8247 "R_PPC_ADDR16_LO", insn);
8252 if (!htab->is_vxworks)
8254 struct plt_entry *ent;
8258 if (h->type == STT_GNU_IFUNC)
8259 ifunc = &h->plt.plist;
8261 else if (local_got_offsets != NULL
8262 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8264 struct plt_entry **local_plt;
8266 local_plt = (struct plt_entry **) (local_got_offsets
8267 + symtab_hdr->sh_info);
8268 ifunc = local_plt + r_symndx;
8273 && (!bfd_link_pic (info)
8274 || is_branch_reloc (r_type)
8275 || r_type == R_PPC_PLT16_LO
8276 || r_type == R_PPC_PLT16_HI
8277 || r_type == R_PPC_PLT16_HA))
8280 if (bfd_link_pic (info)
8281 && (r_type == R_PPC_PLTREL24
8282 || r_type == R_PPC_PLT16_LO
8283 || r_type == R_PPC_PLT16_HI
8284 || r_type == R_PPC_PLT16_HA))
8285 addend = rel->r_addend;
8286 ent = find_plt_ent (ifunc, got2, addend);
8290 if (bfd_link_pic (info)
8292 && htab->plt_type != PLT_NEW
8293 && (!htab->elf.dynamic_sections_created
8295 || h->dynindx == -1))
8297 /* Uh oh, we are going to create a pic glink stub
8298 for an ifunc (here for h == NULL and later in
8299 finish_dynamic_symbol for h != NULL), and
8300 apparently are using code compiled with
8301 -mbss-plt. The difficulty is that -mbss-plt code
8302 gives no indication via a magic PLTREL24 addend
8303 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8304 is pointing into a .got2 section (and how far
8306 info->callbacks->einfo
8307 /* xgettext:c-format */
8308 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8309 input_bfd, input_section, rel->r_offset, sym_name);
8311 if (h == NULL && (ent->plt.offset & 1) == 0)
8313 Elf_Internal_Rela rela;
8316 rela.r_offset = (htab->elf.iplt->output_section->vma
8317 + htab->elf.iplt->output_offset
8319 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8320 rela.r_addend = relocation;
8321 loc = htab->elf.irelplt->contents;
8322 loc += (htab->elf.irelplt->reloc_count++
8323 * sizeof (Elf32_External_Rela));
8324 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8325 htab->local_ifunc_resolver = 1;
8327 ent->plt.offset |= 1;
8329 if (h == NULL && (ent->glink_offset & 1) == 0)
8331 unsigned char *p = ((unsigned char *) htab->glink->contents
8332 + ent->glink_offset);
8334 write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
8335 ent->glink_offset |= 1;
8338 unresolved_reloc = FALSE;
8339 if (htab->plt_type == PLT_NEW
8340 || !htab->elf.dynamic_sections_created
8342 || h->dynindx == -1)
8343 relocation = (htab->glink->output_section->vma
8344 + htab->glink->output_offset
8345 + (ent->glink_offset & ~1));
8347 relocation = (htab->elf.splt->output_section->vma
8348 + htab->elf.splt->output_offset
8353 addend = rel->r_addend;
8355 if (r_type < R_PPC_max)
8356 howto = ppc_elf_howto_table[r_type];
8363 case R_PPC_TPREL16_HA:
8364 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8366 bfd_byte *p = contents + (rel->r_offset & ~3);
8367 unsigned int insn = bfd_get_32 (input_bfd, p);
8368 if ((insn & ((0x3f << 26) | 0x1f << 16))
8369 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8370 /* xgettext:c-format */
8371 info->callbacks->minfo
8372 (_("%H: warning: %s unexpected insn %#x.\n"),
8373 input_bfd, input_section, rel->r_offset, howto->name, insn);
8375 bfd_put_32 (input_bfd, NOP, p);
8379 case R_PPC_TPREL16_LO:
8380 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8382 bfd_byte *p = contents + (rel->r_offset & ~3);
8383 unsigned int insn = bfd_get_32 (input_bfd, p);
8384 insn &= ~(0x1f << 16);
8386 bfd_put_32 (input_bfd, insn, p);
8395 /* xgettext:c-format */
8396 _bfd_error_handler (_("%pB: %s unsupported"),
8397 input_bfd, howto->name);
8399 bfd_set_error (bfd_error_bad_value);
8407 case R_PPC_EMB_MRKREF:
8408 case R_PPC_GNU_VTINHERIT:
8409 case R_PPC_GNU_VTENTRY:
8412 /* GOT16 relocations. Like an ADDR16 using the symbol's
8413 address in the GOT as relocation value instead of the
8414 symbol's value itself. Also, create a GOT entry for the
8415 symbol and put the symbol value there. */
8416 case R_PPC_GOT_TLSGD16:
8417 case R_PPC_GOT_TLSGD16_LO:
8418 case R_PPC_GOT_TLSGD16_HI:
8419 case R_PPC_GOT_TLSGD16_HA:
8420 tls_type = TLS_TLS | TLS_GD;
8423 case R_PPC_GOT_TLSLD16:
8424 case R_PPC_GOT_TLSLD16_LO:
8425 case R_PPC_GOT_TLSLD16_HI:
8426 case R_PPC_GOT_TLSLD16_HA:
8427 tls_type = TLS_TLS | TLS_LD;
8430 case R_PPC_GOT_TPREL16:
8431 case R_PPC_GOT_TPREL16_LO:
8432 case R_PPC_GOT_TPREL16_HI:
8433 case R_PPC_GOT_TPREL16_HA:
8434 tls_type = TLS_TLS | TLS_TPREL;
8437 case R_PPC_GOT_DTPREL16:
8438 case R_PPC_GOT_DTPREL16_LO:
8439 case R_PPC_GOT_DTPREL16_HI:
8440 case R_PPC_GOT_DTPREL16_HA:
8441 tls_type = TLS_TLS | TLS_DTPREL;
8445 case R_PPC_GOT16_LO:
8446 case R_PPC_GOT16_HI:
8447 case R_PPC_GOT16_HA:
8451 /* Relocation is to the entry for this symbol in the global
8457 if (htab->elf.sgot == NULL)
8461 if (tls_type == (TLS_TLS | TLS_LD)
8463 || !h->def_dynamic))
8464 offp = &htab->tlsld_got.offset;
8467 if (!htab->elf.dynamic_sections_created
8469 || SYMBOL_REFERENCES_LOCAL (info, h)
8470 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8471 /* This is actually a static link, or it is a
8472 -Bsymbolic link and the symbol is defined
8473 locally, or the symbol was forced to be local
8474 because of a version file. */
8479 unresolved_reloc = FALSE;
8481 offp = &h->got.offset;
8485 if (local_got_offsets == NULL)
8487 offp = &local_got_offsets[r_symndx];
8490 /* The offset must always be a multiple of 4. We use the
8491 least significant bit to record whether we have already
8492 processed this entry. */
8498 unsigned int tls_m = ((tls_mask & TLS_TLS) != 0
8499 ? tls_mask & (TLS_LD | TLS_GD | TLS_DTPREL
8500 | TLS_TPREL | TLS_TPRELGD)
8503 if (offp == &htab->tlsld_got.offset)
8509 /* We might have multiple got entries for this sym.
8510 Initialize them all. */
8515 if ((tls_m & TLS_LD) != 0)
8517 tls_ty = TLS_TLS | TLS_LD;
8520 else if ((tls_m & TLS_GD) != 0)
8522 tls_ty = TLS_TLS | TLS_GD;
8525 else if ((tls_m & TLS_DTPREL) != 0)
8527 tls_ty = TLS_TLS | TLS_DTPREL;
8528 tls_m &= ~TLS_DTPREL;
8530 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8532 tls_ty = TLS_TLS | TLS_TPREL;
8536 /* Generate relocs for the dynamic linker. */
8538 || (bfd_link_pic (info)
8540 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8541 || offp == &htab->tlsld_got.offset)
8542 && !(tls_ty == (TLS_TLS | TLS_TPREL)
8543 && bfd_link_executable (info)
8544 && SYMBOL_REFERENCES_LOCAL (info, h))))
8546 asection *rsec = htab->elf.srelgot;
8551 rsec = htab->elf.irelplt;
8553 htab->local_ifunc_resolver = 1;
8554 else if (is_static_defined (h))
8555 htab->maybe_local_ifunc_resolver = 1;
8557 outrel.r_offset = (htab->elf.sgot->output_section->vma
8558 + htab->elf.sgot->output_offset
8560 outrel.r_addend = 0;
8561 if (tls_ty & (TLS_LD | TLS_GD))
8563 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8564 if (tls_ty == (TLS_TLS | TLS_GD))
8566 loc = rsec->contents;
8567 loc += (rsec->reloc_count++
8568 * sizeof (Elf32_External_Rela));
8569 bfd_elf32_swap_reloca_out (output_bfd,
8571 outrel.r_offset += 4;
8573 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8576 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8577 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8578 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8579 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8581 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8582 else if (ifunc != NULL)
8583 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8585 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8586 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8588 outrel.r_addend += relocation;
8589 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8591 if (htab->elf.tls_sec == NULL)
8592 outrel.r_addend = 0;
8594 outrel.r_addend -= htab->elf.tls_sec->vma;
8597 loc = rsec->contents;
8598 loc += (rsec->reloc_count++
8599 * sizeof (Elf32_External_Rela));
8600 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8603 /* Init the .got section contents if we're not
8604 emitting a reloc. */
8607 bfd_vma value = relocation;
8611 if (htab->elf.tls_sec == NULL)
8615 if (tls_ty & TLS_LD)
8618 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8619 if (tls_ty & TLS_TPREL)
8620 value += DTP_OFFSET - TP_OFFSET;
8623 if (tls_ty & (TLS_LD | TLS_GD))
8625 bfd_put_32 (input_bfd, value,
8626 htab->elf.sgot->contents + off + 4);
8630 bfd_put_32 (input_bfd, value,
8631 htab->elf.sgot->contents + off);
8635 if (tls_ty & (TLS_LD | TLS_GD))
8644 if (off >= (bfd_vma) -2)
8647 if ((tls_type & TLS_TLS) != 0)
8649 if (tls_type != (TLS_TLS | TLS_LD))
8651 if ((tls_mask & TLS_LD) != 0
8653 || !h->def_dynamic))
8655 if (tls_type != (TLS_TLS | TLS_GD))
8657 if ((tls_mask & TLS_GD) != 0)
8659 if (tls_type != (TLS_TLS | TLS_DTPREL))
8661 if ((tls_mask & TLS_DTPREL) != 0)
8668 /* If here for a picfixup, we're done. */
8669 if (r_type != ELF32_R_TYPE (rel->r_info))
8672 relocation = (htab->elf.sgot->output_section->vma
8673 + htab->elf.sgot->output_offset
8675 - SYM_VAL (htab->elf.hgot));
8677 /* Addends on got relocations don't make much sense.
8678 x+off@got is actually x@got+off, and since the got is
8679 generated by a hash table traversal, the value in the
8680 got at entry m+n bears little relation to the entry m. */
8682 info->callbacks->einfo
8683 /* xgettext:c-format */
8684 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8685 input_bfd, input_section, rel->r_offset,
8691 /* Relocations that need no special processing. */
8692 case R_PPC_LOCAL24PC:
8693 /* It makes no sense to point a local relocation
8694 at a symbol not in this object. */
8695 if (unresolved_reloc)
8697 (*info->callbacks->undefined_symbol) (info,
8698 h->root.root.string,
8705 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8707 /* @local on an ifunc does not really make sense since
8708 the ifunc resolver can take you anywhere. More
8709 seriously, calls to ifuncs must go through a plt call
8710 stub, and for pic the plt call stubs uses r30 to
8711 access the PLT. The problem is that a call that is
8712 local won't have the +32k reloc addend trick marking
8713 -fPIC code, so the linker won't know whether r30 is
8714 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8715 /* xgettext:c-format */
8716 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8717 input_bfd, input_section, rel->r_offset,
8718 h->root.root.string);
8722 case R_PPC_DTPREL16:
8723 case R_PPC_DTPREL16_LO:
8724 case R_PPC_DTPREL16_HI:
8725 case R_PPC_DTPREL16_HA:
8726 if (htab->elf.tls_sec != NULL)
8727 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8730 /* Relocations that may need to be propagated if this is a shared
8733 case R_PPC_TPREL16_LO:
8734 case R_PPC_TPREL16_HI:
8735 case R_PPC_TPREL16_HA:
8737 && h->root.type == bfd_link_hash_undefweak
8738 && h->dynindx == -1)
8740 /* Make this relocation against an undefined weak symbol
8741 resolve to zero. This is really just a tweak, since
8742 code using weak externs ought to check that they are
8743 defined before using them. */
8744 bfd_byte *p = contents + rel->r_offset - d_offset;
8745 unsigned int insn = bfd_get_32 (input_bfd, p);
8746 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8748 bfd_put_32 (input_bfd, insn, p);
8751 if (htab->elf.tls_sec != NULL)
8752 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8753 /* The TPREL16 relocs shouldn't really be used in shared
8754 libs or with non-local symbols as that will result in
8755 DT_TEXTREL being set, but support them anyway. */
8759 if (htab->elf.tls_sec != NULL)
8760 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8763 case R_PPC_DTPREL32:
8764 if (htab->elf.tls_sec != NULL)
8765 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8768 case R_PPC_DTPMOD32:
8774 case R_PPC_REL16_LO:
8775 case R_PPC_REL16_HI:
8776 case R_PPC_REL16_HA:
8777 case R_PPC_REL16DX_HA:
8781 if (h == NULL || h == htab->elf.hgot)
8787 case R_PPC_ADDR16_LO:
8788 case R_PPC_ADDR16_HI:
8789 case R_PPC_ADDR16_HA:
8794 case R_PPC_VLE_REL8:
8795 case R_PPC_VLE_REL15:
8796 case R_PPC_VLE_REL24:
8799 case R_PPC_REL14_BRTAKEN:
8800 case R_PPC_REL14_BRNTAKEN:
8801 /* If these relocations are not to a named symbol, they can be
8802 handled right here, no need to bother the dynamic linker. */
8803 if (SYMBOL_CALLS_LOCAL (info, h)
8804 || h == htab->elf.hgot)
8810 case R_PPC_ADDR14_BRTAKEN:
8811 case R_PPC_ADDR14_BRNTAKEN:
8812 if (h != NULL && !bfd_link_pic (info))
8817 if ((input_section->flags & SEC_ALLOC) == 0
8821 if (bfd_link_pic (info)
8823 || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
8824 && ((h != NULL && pc_dynrelocs (h))
8825 || must_be_dyn_reloc (info, r_type)))
8827 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
8835 fprintf (stderr, "ppc_elf_relocate_section needs to "
8836 "create relocation for %s\n",
8837 (h && h->root.root.string
8838 ? h->root.root.string : "<unknown>"));
8841 /* When generating a shared object, these relocations
8842 are copied into the output file to be resolved at run
8845 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8848 if (outrel.r_offset == (bfd_vma) -1
8849 || outrel.r_offset == (bfd_vma) -2)
8850 skip = (int) outrel.r_offset;
8851 outrel.r_offset += (input_section->output_section->vma
8852 + input_section->output_offset);
8855 memset (&outrel, 0, sizeof outrel);
8856 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8859 BFD_ASSERT (indx != -1);
8860 unresolved_reloc = FALSE;
8861 outrel.r_info = ELF32_R_INFO (indx, r_type);
8862 outrel.r_addend = rel->r_addend;
8866 outrel.r_addend = relocation + rel->r_addend;
8868 if (r_type != R_PPC_ADDR32)
8872 /* If we get here when building a static
8873 executable, then the libc startup function
8874 responsible for applying indirect function
8875 relocations is going to complain about
8877 If we get here when building a dynamic
8878 executable, it will be because we have
8879 a text relocation. The dynamic loader
8880 will set the text segment writable and
8881 non-executable to apply text relocations.
8882 So we'll segfault when trying to run the
8883 indirection function to resolve the reloc. */
8884 info->callbacks->einfo
8885 /* xgettext:c-format */
8886 (_("%H: relocation %s for indirect "
8887 "function %s unsupported\n"),
8888 input_bfd, input_section, rel->r_offset,
8893 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8895 else if (sec == NULL || sec->owner == NULL)
8897 bfd_set_error (bfd_error_bad_value);
8904 /* We are turning this relocation into one
8905 against a section symbol. It would be
8906 proper to subtract the symbol's value,
8907 osec->vma, from the emitted reloc addend,
8908 but ld.so expects buggy relocs.
8909 FIXME: Why not always use a zero index? */
8910 osec = sec->output_section;
8911 indx = elf_section_data (osec)->dynindx;
8914 osec = htab->elf.text_index_section;
8915 indx = elf_section_data (osec)->dynindx;
8917 BFD_ASSERT (indx != 0);
8920 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8921 indx, osec->name, osec->flags,
8922 h->root.root.string);
8926 outrel.r_info = ELF32_R_INFO (indx, r_type);
8928 else if (ifunc != NULL)
8929 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8931 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8934 sreloc = elf_section_data (input_section)->sreloc;
8937 sreloc = htab->elf.irelplt;
8939 htab->local_ifunc_resolver = 1;
8940 else if (is_static_defined (h))
8941 htab->maybe_local_ifunc_resolver = 1;
8946 loc = sreloc->contents;
8947 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8948 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8953 /* This reloc will be computed at runtime. Clear the memory
8954 so that it contains a predictable value for prelink. */
8957 relocation = howto->pc_relative ? outrel.r_offset : 0;
8964 case R_PPC_RELAX_PLT:
8965 case R_PPC_RELAX_PLTREL24:
8968 struct plt_entry *ent;
8969 bfd_vma got2_addend = 0;
8971 if (r_type == R_PPC_RELAX_PLTREL24)
8973 if (bfd_link_pic (info))
8974 got2_addend = addend;
8977 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8978 if (htab->plt_type == PLT_NEW)
8979 relocation = (htab->glink->output_section->vma
8980 + htab->glink->output_offset
8981 + ent->glink_offset);
8983 relocation = (htab->elf.splt->output_section->vma
8984 + htab->elf.splt->output_offset
8993 size_t insn_offset = rel->r_offset;
8996 if (bfd_link_pic (info))
8998 relocation -= (input_section->output_section->vma
8999 + input_section->output_offset
9000 + rel->r_offset - 4);
9001 stub = shared_stub_entry;
9002 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
9003 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
9004 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
9006 size = ARRAY_SIZE (shared_stub_entry) - 3;
9011 size = ARRAY_SIZE (stub_entry);
9014 relocation += addend;
9015 if (bfd_link_relocatable (info))
9018 /* First insn is HA, second is LO. */
9020 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9021 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9025 insn |= relocation & 0xffff;
9026 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9034 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9038 /* Rewrite the reloc and convert one of the trailing nop
9039 relocs to describe this relocation. */
9040 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9041 /* The relocs are at the bottom 2 bytes */
9042 wrel->r_offset = rel->r_offset + d_offset;
9043 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9044 wrel->r_addend = rel->r_addend;
9045 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9047 wrel->r_offset += 4;
9048 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9052 /* Indirect .sdata relocation. */
9053 case R_PPC_EMB_SDAI16:
9054 BFD_ASSERT (htab->sdata[0].section != NULL);
9055 if (!is_static_defined (htab->sdata[0].sym))
9057 unresolved_reloc = TRUE;
9061 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9062 h, relocation, rel);
9066 /* Indirect .sdata2 relocation. */
9067 case R_PPC_EMB_SDA2I16:
9068 BFD_ASSERT (htab->sdata[1].section != NULL);
9069 if (!is_static_defined (htab->sdata[1].sym))
9071 unresolved_reloc = TRUE;
9075 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9076 h, relocation, rel);
9080 /* Handle the TOC16 reloc. We want to use the offset within the .got
9081 section, not the actual VMA. This is appropriate when generating
9082 an embedded ELF object, for which the .got section acts like the
9083 AIX .toc section. */
9084 case R_PPC_TOC16: /* phony GOT16 relocations */
9085 if (sec == NULL || sec->output_section == NULL)
9087 unresolved_reloc = TRUE;
9090 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9092 || strcmp (bfd_get_section_name (sec->owner, sec),
9095 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9098 case R_PPC_PLTREL24:
9099 if (h != NULL && ifunc == NULL)
9101 struct plt_entry *ent;
9103 ent = find_plt_ent (&h->plt.plist, got2,
9104 bfd_link_pic (info) ? addend : 0);
9106 || htab->elf.splt == NULL)
9108 /* We didn't make a PLT entry for this symbol. This
9109 happens when statically linking PIC code, or when
9110 using -Bsymbolic. */
9114 /* Relocation is to the entry for this symbol in the
9115 procedure linkage table. */
9116 unresolved_reloc = FALSE;
9117 if (htab->plt_type == PLT_NEW)
9118 relocation = (htab->glink->output_section->vma
9119 + htab->glink->output_offset
9120 + ent->glink_offset);
9122 relocation = (htab->elf.splt->output_section->vma
9123 + htab->elf.splt->output_offset
9128 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9129 addend specifies the GOT pointer offset within .got2.
9130 Don't apply it to the relocation field. */
9134 case R_PPC_PLT16_LO:
9135 case R_PPC_PLT16_HI:
9136 case R_PPC_PLT16_HA:
9139 plt_list = &h->plt.plist;
9140 unresolved_reloc = TRUE;
9141 if (plt_list != NULL)
9143 struct plt_entry *ent;
9145 ent = find_plt_ent (plt_list, got2,
9146 bfd_link_pic (info) ? addend : 0);
9149 unresolved_reloc = FALSE;
9150 relocation = (htab->elf.splt->output_section->vma
9151 + htab->elf.splt->output_offset
9153 if (bfd_link_pic (info))
9157 if (ent->addend >= 32768)
9159 + ent->sec->output_section->vma
9160 + ent->sec->output_offset);
9162 got = SYM_VAL (htab->elf.hgot);
9170 /* Relocate against _SDA_BASE_. */
9171 case R_PPC_SDAREL16:
9174 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9177 || sec->output_section == NULL
9178 || !is_static_defined (sda))
9180 unresolved_reloc = TRUE;
9183 addend -= SYM_VAL (sda);
9185 name = bfd_get_section_name (output_bfd, sec->output_section);
9186 if (!(strcmp (name, ".sdata") == 0
9187 || strcmp (name, ".sbss") == 0))
9190 /* xgettext:c-format */
9191 (_("%pB: the target (%s) of a %s relocation is "
9192 "in the wrong output section (%s)"),
9201 /* Relocate against _SDA2_BASE_. */
9202 case R_PPC_EMB_SDA2REL:
9205 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9208 || sec->output_section == NULL
9209 || !is_static_defined (sda))
9211 unresolved_reloc = TRUE;
9214 addend -= SYM_VAL (sda);
9216 name = bfd_get_section_name (output_bfd, sec->output_section);
9217 if (!(strcmp (name, ".sdata2") == 0
9218 || strcmp (name, ".sbss2") == 0))
9221 /* xgettext:c-format */
9222 (_("%pB: the target (%s) of a %s relocation is "
9223 "in the wrong output section (%s)"),
9232 case R_PPC_VLE_LO16A:
9233 relocation = relocation + addend;
9234 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9235 contents + rel->r_offset, relocation,
9236 split16a_type, htab->params->vle_reloc_fixup);
9239 case R_PPC_VLE_LO16D:
9240 relocation = relocation + addend;
9241 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9242 contents + rel->r_offset, relocation,
9243 split16d_type, htab->params->vle_reloc_fixup);
9246 case R_PPC_VLE_HI16A:
9247 relocation = (relocation + addend) >> 16;
9248 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9249 contents + rel->r_offset, relocation,
9250 split16a_type, htab->params->vle_reloc_fixup);
9253 case R_PPC_VLE_HI16D:
9254 relocation = (relocation + addend) >> 16;
9255 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9256 contents + rel->r_offset, relocation,
9257 split16d_type, htab->params->vle_reloc_fixup);
9260 case R_PPC_VLE_HA16A:
9261 relocation = (relocation + addend + 0x8000) >> 16;
9262 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9263 contents + rel->r_offset, relocation,
9264 split16a_type, htab->params->vle_reloc_fixup);
9267 case R_PPC_VLE_HA16D:
9268 relocation = (relocation + addend + 0x8000) >> 16;
9269 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9270 contents + rel->r_offset, relocation,
9271 split16d_type, htab->params->vle_reloc_fixup);
9274 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9275 case R_PPC_EMB_SDA21:
9276 case R_PPC_VLE_SDA21:
9277 case R_PPC_EMB_RELSDA:
9278 case R_PPC_VLE_SDA21_LO:
9283 struct elf_link_hash_entry *sda = NULL;
9285 if (sec == NULL || sec->output_section == NULL)
9287 unresolved_reloc = TRUE;
9291 name = bfd_get_section_name (output_bfd, sec->output_section);
9292 if (strcmp (name, ".sdata") == 0
9293 || strcmp (name, ".sbss") == 0)
9296 sda = htab->sdata[0].sym;
9298 else if (strcmp (name, ".sdata2") == 0
9299 || strcmp (name, ".sbss2") == 0)
9302 sda = htab->sdata[1].sym;
9304 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9305 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9312 /* xgettext:c-format */
9313 (_("%pB: the target (%s) of a %s relocation is "
9314 "in the wrong output section (%s)"),
9320 bfd_set_error (bfd_error_bad_value);
9327 if (!is_static_defined (sda))
9329 unresolved_reloc = TRUE;
9332 addend -= SYM_VAL (sda);
9335 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9337 && (r_type == R_PPC_VLE_SDA21
9338 || r_type == R_PPC_VLE_SDA21_LO))
9340 relocation = relocation + addend;
9343 /* Force e_li insn, keeping RT from original insn. */
9347 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9348 /* Top 4 bits of value to 17..20. */
9349 insn |= (relocation & 0xf0000) >> 5;
9350 /* Next 5 bits of the value to 11..15. */
9351 insn |= (relocation & 0xf800) << 5;
9352 /* And the final 11 bits of the value to bits 21 to 31. */
9353 insn |= relocation & 0x7ff;
9355 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9357 if (r_type == R_PPC_VLE_SDA21
9358 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9362 else if (r_type == R_PPC_EMB_SDA21
9363 || r_type == R_PPC_VLE_SDA21
9364 || r_type == R_PPC_VLE_SDA21_LO)
9366 /* Fill in register field. */
9367 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9369 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9373 case R_PPC_VLE_SDAREL_LO16A:
9374 case R_PPC_VLE_SDAREL_LO16D:
9375 case R_PPC_VLE_SDAREL_HI16A:
9376 case R_PPC_VLE_SDAREL_HI16D:
9377 case R_PPC_VLE_SDAREL_HA16A:
9378 case R_PPC_VLE_SDAREL_HA16D:
9382 struct elf_link_hash_entry *sda = NULL;
9384 if (sec == NULL || sec->output_section == NULL)
9386 unresolved_reloc = TRUE;
9390 name = bfd_get_section_name (output_bfd, sec->output_section);
9391 if (strcmp (name, ".sdata") == 0
9392 || strcmp (name, ".sbss") == 0)
9393 sda = htab->sdata[0].sym;
9394 else if (strcmp (name, ".sdata2") == 0
9395 || strcmp (name, ".sbss2") == 0)
9396 sda = htab->sdata[1].sym;
9400 /* xgettext:c-format */
9401 (_("%pB: the target (%s) of a %s relocation is "
9402 "in the wrong output section (%s)"),
9408 bfd_set_error (bfd_error_bad_value);
9413 if (sda == NULL || !is_static_defined (sda))
9415 unresolved_reloc = TRUE;
9418 value = relocation + addend - SYM_VAL (sda);
9420 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9421 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9422 contents + rel->r_offset, value,
9424 htab->params->vle_reloc_fixup);
9425 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9426 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9427 contents + rel->r_offset, value,
9429 htab->params->vle_reloc_fixup);
9430 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9432 value = value >> 16;
9433 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9434 contents + rel->r_offset, value,
9436 htab->params->vle_reloc_fixup);
9438 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9440 value = value >> 16;
9441 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9442 contents + rel->r_offset, value,
9444 htab->params->vle_reloc_fixup);
9446 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9448 value = (value + 0x8000) >> 16;
9449 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9450 contents + rel->r_offset, value,
9452 htab->params->vle_reloc_fixup);
9454 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9456 value = (value + 0x8000) >> 16;
9457 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9458 contents + rel->r_offset, value,
9460 htab->params->vle_reloc_fixup);
9465 case R_PPC_VLE_ADDR20:
9466 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9469 /* Relocate against the beginning of the section. */
9471 case R_PPC_SECTOFF_LO:
9472 case R_PPC_SECTOFF_HI:
9473 case R_PPC_SECTOFF_HA:
9474 if (sec == NULL || sec->output_section == NULL)
9476 unresolved_reloc = TRUE;
9479 addend -= sec->output_section->vma;
9482 /* Negative relocations. */
9483 case R_PPC_EMB_NADDR32:
9484 case R_PPC_EMB_NADDR16:
9485 case R_PPC_EMB_NADDR16_LO:
9486 case R_PPC_EMB_NADDR16_HI:
9487 case R_PPC_EMB_NADDR16_HA:
9488 addend -= 2 * relocation;
9492 case R_PPC_GLOB_DAT:
9493 case R_PPC_JMP_SLOT:
9494 case R_PPC_RELATIVE:
9495 case R_PPC_IRELATIVE:
9497 case R_PPC_PLTREL32:
9499 case R_PPC_EMB_RELSEC16:
9500 case R_PPC_EMB_RELST_LO:
9501 case R_PPC_EMB_RELST_HI:
9502 case R_PPC_EMB_RELST_HA:
9503 case R_PPC_EMB_BIT_FLD:
9504 /* xgettext:c-format */
9505 _bfd_error_handler (_("%pB: %s unsupported"),
9506 input_bfd, howto->name);
9508 bfd_set_error (bfd_error_invalid_operation);
9513 /* Do any further special processing. */
9519 case R_PPC_ADDR16_HA:
9520 case R_PPC_REL16_HA:
9521 case R_PPC_REL16DX_HA:
9522 case R_PPC_SECTOFF_HA:
9523 case R_PPC_TPREL16_HA:
9524 case R_PPC_DTPREL16_HA:
9525 case R_PPC_EMB_NADDR16_HA:
9526 case R_PPC_EMB_RELST_HA:
9527 /* It's just possible that this symbol is a weak symbol
9528 that's not actually defined anywhere. In that case,
9529 'sec' would be NULL, and we should leave the symbol
9530 alone (it will be set to zero elsewhere in the link). */
9535 case R_PPC_PLT16_HA:
9536 case R_PPC_GOT16_HA:
9537 case R_PPC_GOT_TLSGD16_HA:
9538 case R_PPC_GOT_TLSLD16_HA:
9539 case R_PPC_GOT_TPREL16_HA:
9540 case R_PPC_GOT_DTPREL16_HA:
9541 /* Add 0x10000 if sign bit in 0:15 is set.
9542 Bits 0:15 are not used. */
9547 case R_PPC_ADDR16_LO:
9549 case R_PPC_GOT16_LO:
9550 case R_PPC_SDAREL16:
9552 case R_PPC_SECTOFF_LO:
9553 case R_PPC_DTPREL16:
9554 case R_PPC_DTPREL16_LO:
9556 case R_PPC_TPREL16_LO:
9557 case R_PPC_GOT_TLSGD16:
9558 case R_PPC_GOT_TLSGD16_LO:
9559 case R_PPC_GOT_TLSLD16:
9560 case R_PPC_GOT_TLSLD16_LO:
9561 case R_PPC_GOT_DTPREL16:
9562 case R_PPC_GOT_DTPREL16_LO:
9563 case R_PPC_GOT_TPREL16:
9564 case R_PPC_GOT_TPREL16_LO:
9566 /* The 32-bit ABI lacks proper relocations to deal with
9567 certain 64-bit instructions. Prevent damage to bits
9568 that make up part of the insn opcode. */
9569 unsigned int insn, mask, lobit;
9571 insn = bfd_get_32 (input_bfd,
9572 contents + rel->r_offset - d_offset);
9574 if (is_insn_ds_form (insn))
9576 else if (is_insn_dq_form (insn))
9580 relocation += addend;
9581 addend = insn & mask;
9582 lobit = mask & relocation;
9585 relocation ^= lobit;
9586 info->callbacks->einfo
9587 /* xgettext:c-format */
9588 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9589 input_bfd, input_section, rel->r_offset,
9590 howto->name, sym_name, mask + 1);
9591 bfd_set_error (bfd_error_bad_value);
9599 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9600 "offset = %ld, addend = %ld\n",
9605 (long) rel->r_offset,
9609 if (unresolved_reloc
9610 && !((input_section->flags & SEC_DEBUGGING) != 0
9612 && _bfd_elf_section_offset (output_bfd, info, input_section,
9613 rel->r_offset) != (bfd_vma) -1)
9615 info->callbacks->einfo
9616 /* xgettext:c-format */
9617 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9618 input_bfd, input_section, rel->r_offset,
9624 /* 16-bit fields in insns mostly have signed values, but a
9625 few insns have 16-bit unsigned values. Really, we should
9626 have different reloc types. */
9627 if (howto->complain_on_overflow != complain_overflow_dont
9628 && howto->dst_mask == 0xffff
9629 && (input_section->flags & SEC_CODE) != 0)
9631 enum complain_overflow complain = complain_overflow_signed;
9633 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9637 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9638 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9639 complain = complain_overflow_bitfield;
9640 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9641 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9642 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9643 complain = complain_overflow_unsigned;
9645 if (howto->complain_on_overflow != complain)
9648 alt_howto.complain_on_overflow = complain;
9653 if (r_type == R_PPC_REL16DX_HA)
9655 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9656 if (rel->r_offset + 4 > input_section->size)
9657 r = bfd_reloc_outofrange;
9662 relocation += addend;
9663 relocation -= (rel->r_offset
9664 + input_section->output_offset
9665 + input_section->output_section->vma);
9667 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9669 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9670 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9675 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9676 rel->r_offset, relocation, addend);
9678 if (r != bfd_reloc_ok)
9680 if (r == bfd_reloc_overflow)
9683 /* On code like "if (foo) foo();" don't report overflow
9684 on a branch to zero when foo is undefined. */
9687 && (h->root.type == bfd_link_hash_undefweak
9688 || h->root.type == bfd_link_hash_undefined)
9689 && is_branch_reloc (r_type)))
9690 info->callbacks->reloc_overflow
9691 (info, (h ? &h->root : NULL), sym_name, howto->name,
9692 rel->r_addend, input_bfd, input_section, rel->r_offset);
9696 info->callbacks->einfo
9697 /* xgettext:c-format */
9698 (_("%H: %s reloc against `%s': error %d\n"),
9699 input_bfd, input_section, rel->r_offset,
9700 howto->name, sym_name, (int) r);
9711 Elf_Internal_Shdr *rel_hdr;
9712 size_t deleted = rel - wrel;
9714 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9715 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9716 if (rel_hdr->sh_size == 0)
9718 /* It is too late to remove an empty reloc section. Leave
9720 ??? What is wrong with an empty section??? */
9721 rel_hdr->sh_size = rel_hdr->sh_entsize;
9726 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9727 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9728 input_section->reloc_count -= deleted;
9732 fprintf (stderr, "\n");
9735 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9736 && input_section->size != input_section->rawsize
9737 && (strcmp (input_section->output_section->name, ".init") == 0
9738 || strcmp (input_section->output_section->name, ".fini") == 0))
9740 /* Branch around the trampolines. */
9741 unsigned int insn = B + input_section->size - input_section->rawsize;
9742 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9745 if (htab->params->ppc476_workaround
9746 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9747 && (!bfd_link_relocatable (info)
9748 || (input_section->output_section->alignment_power
9749 >= htab->params->pagesize_p2)))
9751 bfd_vma start_addr, end_addr, addr;
9752 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9754 if (relax_info->workaround_size != 0)
9760 bfd_put_32 (input_bfd, BA, fill);
9761 p = contents + input_section->size - relax_info->workaround_size;
9762 n = relax_info->workaround_size >> 2;
9765 memcpy (p, fill, 4);
9770 /* The idea is: Replace the last instruction on a page with a
9771 branch to a patch area. Put the insn there followed by a
9772 branch back to the next page. Complicated a little by
9773 needing to handle moved conditional branches, and by not
9774 wanting to touch data-in-text. */
9776 start_addr = (input_section->output_section->vma
9777 + input_section->output_offset);
9778 end_addr = (start_addr + input_section->size
9779 - relax_info->workaround_size);
9780 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9784 bfd_vma offset = addr - start_addr;
9785 Elf_Internal_Rela *lo, *hi;
9786 bfd_boolean is_data;
9787 bfd_vma patch_off, patch_addr;
9790 /* Do we have a data reloc at this offset? If so, leave
9798 rel = lo + (hi - lo) / 2;
9799 if (rel->r_offset < offset)
9801 else if (rel->r_offset > offset + 3)
9805 switch (ELF32_R_TYPE (rel->r_info))
9822 /* Some instructions can be left alone too. Unconditional
9823 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9824 avoid the icache failure.
9826 The problem occurs due to prefetch across a page boundary
9827 where stale instructions can be fetched from the next
9828 page, and the mechanism for flushing these bad
9829 instructions fails under certain circumstances. The
9830 unconditional branches:
9831 1) Branch: b, bl, ba, bla,
9832 2) Branch Conditional: bc, bca, bcl, bcla,
9833 3) Branch Conditional to Link Register: bclr, bclrl,
9834 where (2) and (3) have BO=0x14 making them unconditional,
9835 prevent the bad prefetch because the prefetch itself is
9836 affected by these instructions. This happens even if the
9837 instruction is not executed.
9842 . addi 9,9,new_page@l
9849 The bctr is not predicted taken due to ctr not being
9850 ready, so prefetch continues on past the bctr into the
9851 new page which might have stale instructions. If they
9852 fail to be flushed, then they will be executed after the
9853 bctr executes. Either of the following modifications
9854 prevent the bad prefetch from happening in the first
9857 . lis 9,new_page@ha lis 9,new_page@ha
9858 . addi 9,9,new_page@l addi 9,9,new_page@l
9861 . nop b somewhere_else
9862 . b somewhere_else nop
9863 . new_page: new_page:
9865 insn = bfd_get_32 (input_bfd, contents + offset);
9866 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9867 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9868 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9869 || ((insn & (0x3f << 26)) == (19u << 26)
9870 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9871 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9874 patch_addr = (start_addr + input_section->size
9875 - relax_info->workaround_size);
9876 patch_addr = (patch_addr + 15) & -16;
9877 patch_off = patch_addr - start_addr;
9878 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9881 && rel->r_offset >= offset
9882 && rel->r_offset < offset + 4)
9886 /* If the insn we are patching had a reloc, adjust the
9887 reloc r_offset so that the reloc applies to the moved
9888 location. This matters for -r and --emit-relocs. */
9889 if (rel + 1 != relend)
9891 Elf_Internal_Rela tmp = *rel;
9893 /* Keep the relocs sorted by r_offset. */
9894 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9897 relend[-1].r_offset += patch_off - offset;
9899 /* Adjust REL16 addends too. */
9900 switch (ELF32_R_TYPE (relend[-1].r_info))
9903 case R_PPC_REL16_LO:
9904 case R_PPC_REL16_HI:
9905 case R_PPC_REL16_HA:
9906 relend[-1].r_addend += patch_off - offset;
9912 /* If we are building a PIE or shared library with
9913 non-PIC objects, perhaps we had a dynamic reloc too?
9914 If so, the dynamic reloc must move with the insn. */
9915 sreloc = elf_section_data (input_section)->sreloc;
9918 Elf32_External_Rela *slo, *shi, *srelend;
9921 slo = (Elf32_External_Rela *) sreloc->contents;
9922 shi = srelend = slo + sreloc->reloc_count;
9923 soffset = (offset + input_section->output_section->vma
9924 + input_section->output_offset);
9927 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9928 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9930 if (outrel.r_offset < soffset)
9932 else if (outrel.r_offset > soffset + 3)
9936 if (srel + 1 != srelend)
9938 memmove (srel, srel + 1,
9939 (srelend - (srel + 1)) * sizeof (*srel));
9942 outrel.r_offset += patch_off - offset;
9943 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9953 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9954 && (insn & 2) == 0 /* relative */)
9956 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9958 delta += offset - patch_off;
9959 if (bfd_link_relocatable (info) && rel != NULL)
9961 if (!bfd_link_relocatable (info) && rel != NULL)
9963 enum elf_ppc_reloc_type r_type;
9965 r_type = ELF32_R_TYPE (relend[-1].r_info);
9966 if (r_type == R_PPC_REL14_BRTAKEN)
9967 insn |= BRANCH_PREDICT_BIT;
9968 else if (r_type == R_PPC_REL14_BRNTAKEN)
9969 insn &= ~BRANCH_PREDICT_BIT;
9971 BFD_ASSERT (r_type == R_PPC_REL14);
9973 if ((r_type == R_PPC_REL14_BRTAKEN
9974 || r_type == R_PPC_REL14_BRNTAKEN)
9975 && delta + 0x8000 < 0x10000
9976 && (bfd_signed_vma) delta < 0)
9977 insn ^= BRANCH_PREDICT_BIT;
9979 if (delta + 0x8000 < 0x10000)
9981 bfd_put_32 (input_bfd,
9982 (insn & ~0xfffc) | (delta & 0xfffc),
9983 contents + patch_off);
9985 bfd_put_32 (input_bfd,
9986 B | ((offset + 4 - patch_off) & 0x3fffffc),
9987 contents + patch_off);
9994 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9996 relend[-1].r_offset += 8;
9997 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9999 bfd_put_32 (input_bfd,
10000 (insn & ~0xfffc) | 8,
10001 contents + patch_off);
10003 bfd_put_32 (input_bfd,
10004 B | ((offset + 4 - patch_off) & 0x3fffffc),
10005 contents + patch_off);
10007 bfd_put_32 (input_bfd,
10008 B | ((delta - 8) & 0x3fffffc),
10009 contents + patch_off);
10015 bfd_put_32 (input_bfd, insn, contents + patch_off);
10017 bfd_put_32 (input_bfd,
10018 B | ((offset + 4 - patch_off) & 0x3fffffc),
10019 contents + patch_off);
10022 BFD_ASSERT (patch_off <= input_section->size);
10023 relax_info->workaround_size = input_section->size - patch_off;
10030 /* Finish up dynamic symbol handling. We set the contents of various
10031 dynamic sections here. */
10034 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
10035 struct bfd_link_info *info,
10036 struct elf_link_hash_entry *h,
10037 Elf_Internal_Sym *sym)
10039 struct ppc_elf_link_hash_table *htab;
10040 struct plt_entry *ent;
10041 bfd_boolean doneone;
10044 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
10045 h->root.root.string);
10048 htab = ppc_elf_hash_table (info);
10049 BFD_ASSERT (htab->elf.dynobj != NULL);
10052 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10053 if (ent->plt.offset != (bfd_vma) -1)
10057 Elf_Internal_Rela rela;
10059 bfd_vma reloc_index;
10061 if (htab->plt_type == PLT_NEW
10062 || !htab->elf.dynamic_sections_created
10063 || h->dynindx == -1)
10064 reloc_index = ent->plt.offset / 4;
10067 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10068 / htab->plt_slot_size);
10069 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10070 && htab->plt_type == PLT_OLD)
10071 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10074 /* This symbol has an entry in the procedure linkage table.
10076 if (htab->plt_type == PLT_VXWORKS
10077 && htab->elf.dynamic_sections_created
10078 && h->dynindx != -1)
10080 bfd_vma got_offset;
10081 const bfd_vma *plt_entry;
10083 /* The first three entries in .got.plt are reserved. */
10084 got_offset = (reloc_index + 3) * 4;
10086 /* Use the right PLT. */
10087 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10088 : ppc_elf_vxworks_plt_entry;
10090 /* Fill in the .plt on VxWorks. */
10091 if (bfd_link_pic (info))
10093 bfd_put_32 (output_bfd,
10094 plt_entry[0] | PPC_HA (got_offset),
10095 htab->elf.splt->contents + ent->plt.offset + 0);
10096 bfd_put_32 (output_bfd,
10097 plt_entry[1] | PPC_LO (got_offset),
10098 htab->elf.splt->contents + ent->plt.offset + 4);
10102 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10104 bfd_put_32 (output_bfd,
10105 plt_entry[0] | PPC_HA (got_loc),
10106 htab->elf.splt->contents + ent->plt.offset + 0);
10107 bfd_put_32 (output_bfd,
10108 plt_entry[1] | PPC_LO (got_loc),
10109 htab->elf.splt->contents + ent->plt.offset + 4);
10112 bfd_put_32 (output_bfd, plt_entry[2],
10113 htab->elf.splt->contents + ent->plt.offset + 8);
10114 bfd_put_32 (output_bfd, plt_entry[3],
10115 htab->elf.splt->contents + ent->plt.offset + 12);
10117 /* This instruction is an immediate load. The value loaded is
10118 the byte offset of the R_PPC_JMP_SLOT relocation from the
10119 start of the .rela.plt section. The value is stored in the
10120 low-order 16 bits of the load instruction. */
10121 /* NOTE: It appears that this is now an index rather than a
10122 prescaled offset. */
10123 bfd_put_32 (output_bfd,
10124 plt_entry[4] | reloc_index,
10125 htab->elf.splt->contents + ent->plt.offset + 16);
10126 /* This instruction is a PC-relative branch whose target is
10127 the start of the PLT section. The address of this branch
10128 instruction is 20 bytes beyond the start of this PLT entry.
10129 The address is encoded in bits 6-29, inclusive. The value
10130 stored is right-shifted by two bits, permitting a 26-bit
10132 bfd_put_32 (output_bfd,
10134 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10135 htab->elf.splt->contents + ent->plt.offset + 20);
10136 bfd_put_32 (output_bfd, plt_entry[6],
10137 htab->elf.splt->contents + ent->plt.offset + 24);
10138 bfd_put_32 (output_bfd, plt_entry[7],
10139 htab->elf.splt->contents + ent->plt.offset + 28);
10141 /* Fill in the GOT entry corresponding to this PLT slot with
10142 the address immediately after the "bctr" instruction
10143 in this PLT entry. */
10144 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10145 + htab->elf.splt->output_offset
10146 + ent->plt.offset + 16),
10147 htab->elf.sgotplt->contents + got_offset);
10149 if (!bfd_link_pic (info))
10151 /* Fill in a couple of entries in .rela.plt.unloaded. */
10152 loc = htab->srelplt2->contents
10153 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10154 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10155 * sizeof (Elf32_External_Rela));
10157 /* Provide the @ha relocation for the first instruction. */
10158 rela.r_offset = (htab->elf.splt->output_section->vma
10159 + htab->elf.splt->output_offset
10160 + ent->plt.offset + 2);
10161 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10163 rela.r_addend = got_offset;
10164 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10165 loc += sizeof (Elf32_External_Rela);
10167 /* Provide the @l relocation for the second instruction. */
10168 rela.r_offset = (htab->elf.splt->output_section->vma
10169 + htab->elf.splt->output_offset
10170 + ent->plt.offset + 6);
10171 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10173 rela.r_addend = got_offset;
10174 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10175 loc += sizeof (Elf32_External_Rela);
10177 /* Provide a relocation for the GOT entry corresponding to this
10178 PLT slot. Point it at the middle of the .plt entry. */
10179 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10180 + htab->elf.sgotplt->output_offset
10182 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10184 rela.r_addend = ent->plt.offset + 16;
10185 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10188 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10189 In particular, the offset for the relocation is not the
10190 address of the PLT entry for this function, as specified
10191 by the ABI. Instead, the offset is set to the address of
10192 the GOT slot for this function. See EABI 4.4.4.1. */
10193 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10194 + htab->elf.sgotplt->output_offset
10200 asection *splt = htab->elf.splt;
10201 if (!htab->elf.dynamic_sections_created
10202 || h->dynindx == -1)
10203 splt = htab->elf.iplt;
10205 rela.r_offset = (splt->output_section->vma
10206 + splt->output_offset
10207 + ent->plt.offset);
10208 if (htab->plt_type == PLT_OLD
10209 || !htab->elf.dynamic_sections_created
10210 || h->dynindx == -1)
10212 /* We don't need to fill in the .plt. The ppc dynamic
10213 linker will fill it in. */
10217 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10218 + htab->glink->output_section->vma
10219 + htab->glink->output_offset);
10220 bfd_put_32 (output_bfd, val,
10221 splt->contents + ent->plt.offset);
10225 /* Fill in the entry in the .rela.plt section. */
10227 if (!htab->elf.dynamic_sections_created
10228 || h->dynindx == -1)
10230 BFD_ASSERT (h->type == STT_GNU_IFUNC
10232 && (h->root.type == bfd_link_hash_defined
10233 || h->root.type == bfd_link_hash_defweak));
10234 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10235 rela.r_addend = SYM_VAL (h);
10238 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10240 if (!htab->elf.dynamic_sections_created
10241 || h->dynindx == -1)
10243 loc = (htab->elf.irelplt->contents
10244 + (htab->elf.irelplt->reloc_count++
10245 * sizeof (Elf32_External_Rela)));
10246 htab->local_ifunc_resolver = 1;
10250 loc = (htab->elf.srelplt->contents
10251 + reloc_index * sizeof (Elf32_External_Rela));
10252 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10253 htab->maybe_local_ifunc_resolver = 1;
10255 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10257 if (!h->def_regular)
10259 /* Mark the symbol as undefined, rather than as
10260 defined in the .plt section. Leave the value if
10261 there were any relocations where pointer equality
10262 matters (this is a clue for the dynamic linker, to
10263 make function pointer comparisons work between an
10264 application and shared library), otherwise set it
10266 sym->st_shndx = SHN_UNDEF;
10267 if (!h->pointer_equality_needed)
10269 else if (!h->ref_regular_nonweak)
10271 /* This breaks function pointer comparisons, but
10272 that is better than breaking tests for a NULL
10273 function pointer. */
10277 else if (h->type == STT_GNU_IFUNC
10278 && !bfd_link_pic (info))
10280 /* Set the value of ifunc symbols in a non-pie
10281 executable to the glink entry. This is to avoid
10282 text relocations. We can't do this for ifunc in
10283 allocate_dynrelocs, as we do for normal dynamic
10284 function symbols with plt entries, because we need
10285 to keep the original value around for the ifunc
10287 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10288 (output_bfd, htab->glink->output_section));
10289 sym->st_value = (ent->glink_offset
10290 + htab->glink->output_offset
10291 + htab->glink->output_section->vma);
10296 if (htab->plt_type == PLT_NEW
10297 || !htab->elf.dynamic_sections_created
10298 || h->dynindx == -1)
10301 asection *splt = htab->elf.splt;
10303 if (!htab->elf.dynamic_sections_created
10304 || h->dynindx == -1)
10305 splt = htab->elf.iplt;
10307 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10308 write_glink_stub (h, ent, splt, p, info);
10310 if (!bfd_link_pic (info))
10311 /* We only need one non-PIC glink stub. */
10321 Elf_Internal_Rela rela;
10324 /* This symbols needs a copy reloc. Set it up. */
10327 fprintf (stderr, ", copy");
10330 BFD_ASSERT (h->dynindx != -1);
10332 if (ppc_elf_hash_entry (h)->has_sda_refs)
10334 else if (h->root.u.def.section == htab->elf.sdynrelro)
10335 s = htab->elf.sreldynrelro;
10337 s = htab->elf.srelbss;
10338 BFD_ASSERT (s != NULL);
10340 rela.r_offset = SYM_VAL (h);
10341 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10343 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10344 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10348 fprintf (stderr, "\n");
10354 static enum elf_reloc_type_class
10355 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10356 const asection *rel_sec,
10357 const Elf_Internal_Rela *rela)
10359 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10361 if (rel_sec == htab->elf.irelplt)
10362 return reloc_class_ifunc;
10364 switch (ELF32_R_TYPE (rela->r_info))
10366 case R_PPC_RELATIVE:
10367 return reloc_class_relative;
10368 case R_PPC_JMP_SLOT:
10369 return reloc_class_plt;
10371 return reloc_class_copy;
10373 return reloc_class_normal;
10377 /* Finish up the dynamic sections. */
10380 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10381 struct bfd_link_info *info)
10384 struct ppc_elf_link_hash_table *htab;
10387 bfd_boolean ret = TRUE;
10390 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10393 htab = ppc_elf_hash_table (info);
10394 dynobj = htab->elf.dynobj;
10395 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10398 if (htab->elf.hgot != NULL)
10399 got = SYM_VAL (htab->elf.hgot);
10401 if (htab->elf.dynamic_sections_created)
10403 Elf32_External_Dyn *dyncon, *dynconend;
10405 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10407 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10408 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10409 for (; dyncon < dynconend; dyncon++)
10411 Elf_Internal_Dyn dyn;
10414 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10419 if (htab->is_vxworks)
10420 s = htab->elf.sgotplt;
10422 s = htab->elf.splt;
10423 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10427 dyn.d_un.d_val = htab->elf.srelplt->size;
10431 s = htab->elf.srelplt;
10432 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10436 dyn.d_un.d_ptr = got;
10440 if (htab->local_ifunc_resolver)
10441 info->callbacks->einfo
10442 (_("%X%P: text relocations and GNU indirect "
10443 "functions will result in a segfault at runtime\n"));
10444 else if (htab->maybe_local_ifunc_resolver)
10445 info->callbacks->einfo
10446 (_("%P: warning: text relocations and GNU indirect "
10447 "functions may result in a segfault at runtime\n"));
10451 if (htab->is_vxworks
10452 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10457 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10461 if (htab->elf.sgot != NULL
10462 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10464 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10465 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10467 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10469 p += htab->elf.hgot->root.u.def.value;
10470 if (htab->plt_type == PLT_OLD)
10472 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10473 so that a function can easily find the address of
10474 _GLOBAL_OFFSET_TABLE_. */
10475 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10476 < htab->elf.hgot->root.u.def.section->size);
10477 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10482 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10483 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10484 < htab->elf.hgot->root.u.def.section->size);
10485 bfd_put_32 (output_bfd, val, p);
10490 /* xgettext:c-format */
10491 _bfd_error_handler (_("%s not defined in linker created %pA"),
10492 htab->elf.hgot->root.root.string,
10493 (htab->elf.sgotplt != NULL
10494 ? htab->elf.sgotplt : htab->elf.sgot));
10495 bfd_set_error (bfd_error_bad_value);
10499 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10502 /* Fill in the first entry in the VxWorks procedure linkage table. */
10503 if (htab->is_vxworks
10504 && htab->elf.splt != NULL
10505 && htab->elf.splt->size != 0
10506 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10508 asection *splt = htab->elf.splt;
10509 /* Use the right PLT. */
10510 const bfd_vma *plt_entry = (bfd_link_pic (info)
10511 ? ppc_elf_vxworks_pic_plt0_entry
10512 : ppc_elf_vxworks_plt0_entry);
10514 if (!bfd_link_pic (info))
10516 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10518 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10519 splt->contents + 0);
10520 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10521 splt->contents + 4);
10525 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10526 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10528 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10529 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10530 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10531 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10532 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10533 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10535 if (! bfd_link_pic (info))
10537 Elf_Internal_Rela rela;
10540 loc = htab->srelplt2->contents;
10542 /* Output the @ha relocation for the first instruction. */
10543 rela.r_offset = (htab->elf.splt->output_section->vma
10544 + htab->elf.splt->output_offset
10546 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10548 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10549 loc += sizeof (Elf32_External_Rela);
10551 /* Output the @l relocation for the second instruction. */
10552 rela.r_offset = (htab->elf.splt->output_section->vma
10553 + htab->elf.splt->output_offset
10555 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10557 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10558 loc += sizeof (Elf32_External_Rela);
10560 /* Fix up the remaining relocations. They may have the wrong
10561 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10562 in which symbols were output. */
10563 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10565 Elf_Internal_Rela rel;
10567 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10568 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10569 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10570 loc += sizeof (Elf32_External_Rela);
10572 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10573 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10574 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10575 loc += sizeof (Elf32_External_Rela);
10577 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10578 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10579 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10580 loc += sizeof (Elf32_External_Rela);
10585 if (htab->glink != NULL
10586 && htab->glink->contents != NULL
10587 && htab->elf.dynamic_sections_created)
10590 unsigned char *endp;
10594 * PIC glink code is the following:
10596 * # ith PLT code stub.
10597 * addis 11,30,(plt+(i-1)*4-got)@ha
10598 * lwz 11,(plt+(i-1)*4-got)@l(11)
10602 * # A table of branches, one for each plt entry.
10603 * # The idea is that the plt call stub loads ctr and r11 with these
10604 * # addresses, so (r11 - res_0) gives the plt index * 4.
10605 * res_0: b PLTresolve
10606 * res_1: b PLTresolve
10608 * # Some number of entries towards the end can be nops
10614 * addis 11,11,(1f-res_0)@ha
10617 * 1: addi 11,11,(1b-res_0)@l
10620 * sub 11,11,12 # r11 = index * 4
10621 * addis 12,12,(got+4-1b)@ha
10622 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10623 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10626 * add 11,0,11 # r11 = index * 12 = reloc offset.
10629 * Non-PIC glink code is a little simpler.
10631 * # ith PLT code stub.
10632 * lis 11,(plt+(i-1)*4)@ha
10633 * lwz 11,(plt+(i-1)*4)@l(11)
10637 * The branch table is the same, then comes
10640 * lis 12,(got+4)@ha
10641 * addis 11,11,(-res_0)@ha
10642 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10643 * addi 11,11,(-res_0)@l # r11 = index * 4
10646 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10647 * add 11,0,11 # r11 = index * 12 = reloc offset.
10651 /* Build the branch table, one for each plt entry (less one),
10652 and perhaps some padding. */
10653 p = htab->glink->contents;
10654 p += htab->glink_pltresolve;
10655 endp = htab->glink->contents;
10656 endp += htab->glink->size - GLINK_PLTRESOLVE;
10657 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10659 bfd_put_32 (output_bfd, B + endp - p, p);
10664 bfd_put_32 (output_bfd, NOP, p);
10668 res0 = (htab->glink_pltresolve
10669 + htab->glink->output_section->vma
10670 + htab->glink->output_offset);
10672 if (htab->params->ppc476_workaround)
10674 /* Ensure that a call stub at the end of a page doesn't
10675 result in prefetch over the end of the page into the
10676 glink branch table. */
10677 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10679 bfd_vma glink_start = (htab->glink->output_section->vma
10680 + htab->glink->output_offset);
10682 for (page_addr = res0 & -pagesize;
10683 page_addr > glink_start;
10684 page_addr -= pagesize)
10686 /* We have a plt call stub that may need fixing. */
10690 loc = htab->glink->contents + page_addr - 4 - glink_start;
10691 insn = bfd_get_32 (output_bfd, loc);
10694 /* By alignment, we know that there must be at least
10695 one other call stub before this one. */
10696 insn = bfd_get_32 (output_bfd, loc - 16);
10698 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10700 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10705 /* Last comes the PLTresolve stub. */
10706 endp = p + GLINK_PLTRESOLVE;
10707 if (bfd_link_pic (info))
10711 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10712 + htab->glink->output_section->vma
10713 + htab->glink->output_offset);
10715 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
10717 bfd_put_32 (output_bfd, MFLR_0, p);
10719 bfd_put_32 (output_bfd, BCL_20_31, p);
10721 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
10723 bfd_put_32 (output_bfd, MFLR_12, p);
10725 bfd_put_32 (output_bfd, MTLR_0, p);
10727 bfd_put_32 (output_bfd, SUB_11_11_12, p);
10729 bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
10731 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10733 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
10735 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
10740 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
10742 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10745 bfd_put_32 (output_bfd, MTCTR_0, p);
10747 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10751 bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
10753 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
10755 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10756 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
10758 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
10760 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
10762 bfd_put_32 (output_bfd, MTCTR_0, p);
10764 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10766 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10767 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
10769 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10772 bfd_put_32 (output_bfd, ADD_11_0_11, p);
10774 bfd_put_32 (output_bfd, BCTR, p);
10778 bfd_put_32 (output_bfd,
10779 htab->params->ppc476_workaround ? BA : NOP, p);
10782 BFD_ASSERT (p == endp);
10785 if (htab->glink_eh_frame != NULL
10786 && htab->glink_eh_frame->contents != NULL)
10788 unsigned char *p = htab->glink_eh_frame->contents;
10791 p += sizeof (glink_eh_frame_cie);
10796 /* Offset to .glink. */
10797 val = (htab->glink->output_section->vma
10798 + htab->glink->output_offset);
10799 val -= (htab->glink_eh_frame->output_section->vma
10800 + htab->glink_eh_frame->output_offset);
10801 val -= p - htab->glink_eh_frame->contents;
10802 bfd_put_32 (htab->elf.dynobj, val, p);
10804 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10805 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10806 htab->glink_eh_frame,
10807 htab->glink_eh_frame->contents))
10814 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10815 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10816 #define TARGET_BIG_SYM powerpc_elf32_vec
10817 #define TARGET_BIG_NAME "elf32-powerpc"
10818 #define ELF_ARCH bfd_arch_powerpc
10819 #define ELF_TARGET_ID PPC32_ELF_DATA
10820 #define ELF_MACHINE_CODE EM_PPC
10821 #ifdef __QNXTARGET__
10822 #define ELF_MAXPAGESIZE 0x1000
10823 #define ELF_COMMONPAGESIZE 0x1000
10825 #define ELF_MAXPAGESIZE 0x10000
10826 #define ELF_COMMONPAGESIZE 0x10000
10828 #define ELF_MINPAGESIZE 0x1000
10829 #define elf_info_to_howto ppc_elf_info_to_howto
10831 #ifdef EM_CYGNUS_POWERPC
10832 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10836 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10839 #define elf_backend_plt_not_loaded 1
10840 #define elf_backend_want_dynrelro 1
10841 #define elf_backend_can_gc_sections 1
10842 #define elf_backend_can_refcount 1
10843 #define elf_backend_rela_normal 1
10844 #define elf_backend_caches_rawsize 1
10846 #define bfd_elf32_mkobject ppc_elf_mkobject
10847 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10848 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10849 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10850 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10851 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10852 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10853 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10855 #define elf_backend_object_p ppc_elf_object_p
10856 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10857 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10858 #define elf_backend_relocate_section ppc_elf_relocate_section
10859 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10860 #define elf_backend_check_relocs ppc_elf_check_relocs
10861 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10862 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10863 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10864 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10865 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10866 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10867 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10868 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10869 #define elf_backend_fake_sections ppc_elf_fake_sections
10870 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10871 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10872 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10873 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10874 #define elf_backend_write_core_note ppc_elf_write_core_note
10875 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10876 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10877 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10878 #define elf_backend_write_section ppc_elf_write_section
10879 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10880 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10881 #define elf_backend_action_discarded ppc_elf_action_discarded
10882 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10883 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10885 #include "elf32-target.h"
10887 /* FreeBSD Target */
10889 #undef TARGET_LITTLE_SYM
10890 #undef TARGET_LITTLE_NAME
10892 #undef TARGET_BIG_SYM
10893 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10894 #undef TARGET_BIG_NAME
10895 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10898 #define ELF_OSABI ELFOSABI_FREEBSD
10901 #define elf32_bed elf32_powerpc_fbsd_bed
10903 #include "elf32-target.h"
10905 /* VxWorks Target */
10907 #undef TARGET_LITTLE_SYM
10908 #undef TARGET_LITTLE_NAME
10910 #undef TARGET_BIG_SYM
10911 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10912 #undef TARGET_BIG_NAME
10913 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10917 /* VxWorks uses the elf default section flags for .plt. */
10918 static const struct bfd_elf_special_section *
10919 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10921 if (sec->name == NULL)
10924 if (strcmp (sec->name, ".plt") == 0)
10925 return _bfd_elf_get_sec_type_attr (abfd, sec);
10927 return ppc_elf_get_sec_type_attr (abfd, sec);
10930 /* Like ppc_elf_link_hash_table_create, but overrides
10931 appropriately for VxWorks. */
10932 static struct bfd_link_hash_table *
10933 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10935 struct bfd_link_hash_table *ret;
10937 ret = ppc_elf_link_hash_table_create (abfd);
10940 struct ppc_elf_link_hash_table *htab
10941 = (struct ppc_elf_link_hash_table *)ret;
10942 htab->is_vxworks = 1;
10943 htab->plt_type = PLT_VXWORKS;
10944 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10945 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10946 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10951 /* Tweak magic VxWorks symbols as they are loaded. */
10953 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10954 struct bfd_link_info *info,
10955 Elf_Internal_Sym *sym,
10956 const char **namep,
10961 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10965 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10969 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10971 ppc_elf_final_write_processing (abfd, linker);
10972 elf_vxworks_final_write_processing (abfd, linker);
10975 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10977 #undef elf_backend_want_plt_sym
10978 #define elf_backend_want_plt_sym 1
10979 #undef elf_backend_want_got_plt
10980 #define elf_backend_want_got_plt 1
10981 #undef elf_backend_got_symbol_offset
10982 #define elf_backend_got_symbol_offset 0
10983 #undef elf_backend_plt_not_loaded
10984 #define elf_backend_plt_not_loaded 0
10985 #undef elf_backend_plt_readonly
10986 #define elf_backend_plt_readonly 1
10987 #undef elf_backend_got_header_size
10988 #define elf_backend_got_header_size 12
10989 #undef elf_backend_dtrel_excludes_plt
10990 #define elf_backend_dtrel_excludes_plt 1
10992 #undef bfd_elf32_get_synthetic_symtab
10994 #undef bfd_elf32_bfd_link_hash_table_create
10995 #define bfd_elf32_bfd_link_hash_table_create \
10996 ppc_elf_vxworks_link_hash_table_create
10997 #undef elf_backend_add_symbol_hook
10998 #define elf_backend_add_symbol_hook \
10999 ppc_elf_vxworks_add_symbol_hook
11000 #undef elf_backend_link_output_symbol_hook
11001 #define elf_backend_link_output_symbol_hook \
11002 elf_vxworks_link_output_symbol_hook
11003 #undef elf_backend_final_write_processing
11004 #define elf_backend_final_write_processing \
11005 ppc_elf_vxworks_final_write_processing
11006 #undef elf_backend_get_sec_type_attr
11007 #define elf_backend_get_sec_type_attr \
11008 ppc_elf_vxworks_get_sec_type_attr
11009 #undef elf_backend_emit_relocs
11010 #define elf_backend_emit_relocs \
11011 elf_vxworks_emit_relocs
11014 #define elf32_bed ppc_elf_vxworks_bed
11015 #undef elf_backend_post_process_headers
11017 #include "elf32-target.h"