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 reloc type %#x"),
2034 bfd_set_error (bfd_error_bad_value);
2035 r_type = R_PPC_NONE;
2037 cache_ptr->howto = ppc_elf_howto_table[r_type];
2039 /* Just because the above assert didn't trigger doesn't mean that
2040 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2041 if (!cache_ptr->howto)
2043 /* xgettext:c-format */
2044 _bfd_error_handler (_("%pB: unsupported reloc type %#x"),
2046 bfd_set_error (bfd_error_bad_value);
2048 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2052 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2054 static bfd_reloc_status_type
2055 ppc_elf_addr16_ha_reloc (bfd *abfd,
2056 arelent *reloc_entry,
2059 asection *input_section,
2061 char **error_message ATTRIBUTE_UNUSED)
2063 enum elf_ppc_reloc_type r_type;
2065 bfd_size_type octets;
2068 if (output_bfd != NULL)
2070 reloc_entry->address += input_section->output_offset;
2071 return bfd_reloc_ok;
2074 reloc_entry->addend += 0x8000;
2075 r_type = reloc_entry->howto->type;
2076 if (r_type != R_PPC_REL16DX_HA)
2077 return bfd_reloc_continue;
2080 if (!bfd_is_com_section (symbol->section))
2081 value = symbol->value;
2082 value += (reloc_entry->addend
2083 + symbol->section->output_offset
2084 + symbol->section->output_section->vma);
2085 value -= (reloc_entry->address
2086 + input_section->output_offset
2087 + input_section->output_section->vma);
2090 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2091 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2093 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2094 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2095 return bfd_reloc_ok;
2098 static bfd_reloc_status_type
2099 ppc_elf_unhandled_reloc (bfd *abfd,
2100 arelent *reloc_entry,
2103 asection *input_section,
2105 char **error_message)
2107 /* If this is a relocatable link (output_bfd test tells us), just
2108 call the generic function. Any adjustment will be done at final
2110 if (output_bfd != NULL)
2111 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2112 input_section, output_bfd, error_message);
2114 if (error_message != NULL)
2116 static char buf[60];
2117 sprintf (buf, _("generic linker can't handle %s"),
2118 reloc_entry->howto->name);
2119 *error_message = buf;
2121 return bfd_reloc_dangerous;
2124 /* Sections created by the linker. */
2126 typedef struct elf_linker_section
2128 /* Pointer to the bfd section. */
2132 /* Associated bss section name. */
2133 const char *bss_name;
2134 /* Associated symbol name. */
2135 const char *sym_name;
2136 /* Associated symbol. */
2137 struct elf_link_hash_entry *sym;
2138 } elf_linker_section_t;
2140 /* Linked list of allocated pointer entries. This hangs off of the
2141 symbol lists, and provides allows us to return different pointers,
2142 based on different addend's. */
2144 typedef struct elf_linker_section_pointers
2146 /* next allocated pointer for this symbol */
2147 struct elf_linker_section_pointers *next;
2148 /* offset of pointer from beginning of section */
2152 /* which linker section this is */
2153 elf_linker_section_t *lsect;
2154 } elf_linker_section_pointers_t;
2156 struct ppc_elf_obj_tdata
2158 struct elf_obj_tdata elf;
2160 /* A mapping from local symbols to offsets into the various linker
2161 sections added. This is index by the symbol index. */
2162 elf_linker_section_pointers_t **linker_section_pointers;
2164 /* Flags used to auto-detect plt type. */
2165 unsigned int makes_plt_call : 1;
2166 unsigned int has_rel16 : 1;
2169 #define ppc_elf_tdata(bfd) \
2170 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2172 #define elf_local_ptr_offsets(bfd) \
2173 (ppc_elf_tdata (bfd)->linker_section_pointers)
2175 #define is_ppc_elf(bfd) \
2176 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2177 && elf_object_id (bfd) == PPC32_ELF_DATA)
2179 /* Override the generic function because we store some extras. */
2182 ppc_elf_mkobject (bfd *abfd)
2184 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2188 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2191 _bfd_elf_ppc_set_arch (bfd *abfd)
2193 unsigned long mach = 0;
2195 unsigned char *contents;
2197 if (abfd->arch_info->bits_per_word == 32
2198 && bfd_big_endian (abfd))
2201 for (s = abfd->sections; s != NULL; s = s->next)
2202 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2205 mach = bfd_mach_ppc_vle;
2210 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2211 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2213 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2216 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2218 unsigned int val = bfd_get_32 (abfd, contents + i);
2221 case PPC_APUINFO_PMR:
2222 case PPC_APUINFO_RFMCI:
2224 mach = bfd_mach_ppc_titan;
2227 case PPC_APUINFO_ISEL:
2228 case PPC_APUINFO_CACHELCK:
2229 if (mach == bfd_mach_ppc_titan)
2230 mach = bfd_mach_ppc_e500mc;
2233 case PPC_APUINFO_SPE:
2234 case PPC_APUINFO_EFS:
2235 case PPC_APUINFO_BRLOCK:
2236 if (mach != bfd_mach_ppc_vle)
2237 mach = bfd_mach_ppc_e500;
2240 case PPC_APUINFO_VLE:
2241 mach = bfd_mach_ppc_vle;
2252 if (mach != 0 && mach != -1ul)
2254 const bfd_arch_info_type *arch;
2256 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2257 if (arch->mach == mach)
2259 abfd->arch_info = arch;
2266 /* Fix bad default arch selected for a 32 bit input bfd when the
2267 default is 64 bit. Also select arch based on apuinfo. */
2270 ppc_elf_object_p (bfd *abfd)
2272 if (!abfd->arch_info->the_default)
2275 if (abfd->arch_info->bits_per_word == 64)
2277 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2279 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2281 /* Relies on arch after 64 bit default being 32 bit default. */
2282 abfd->arch_info = abfd->arch_info->next;
2283 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2286 return _bfd_elf_ppc_set_arch (abfd);
2289 /* Function to set whether a module needs the -mrelocatable bit set. */
2292 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2294 BFD_ASSERT (!elf_flags_init (abfd)
2295 || elf_elfheader (abfd)->e_flags == flags);
2297 elf_elfheader (abfd)->e_flags = flags;
2298 elf_flags_init (abfd) = TRUE;
2302 /* Support for core dump NOTE sections. */
2305 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2310 switch (note->descsz)
2315 case 268: /* Linux/PPC. */
2317 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2320 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2329 /* Make a ".reg/999" section. */
2330 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2331 size, note->descpos + offset);
2335 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2337 switch (note->descsz)
2342 case 128: /* Linux/PPC elf_prpsinfo. */
2343 elf_tdata (abfd)->core->pid
2344 = bfd_get_32 (abfd, note->descdata + 16);
2345 elf_tdata (abfd)->core->program
2346 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2347 elf_tdata (abfd)->core->command
2348 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2351 /* Note that for some reason, a spurious space is tacked
2352 onto the end of the args in some (at least one anyway)
2353 implementations, so strip it off if it exists. */
2356 char *command = elf_tdata (abfd)->core->command;
2357 int n = strlen (command);
2359 if (0 < n && command[n - 1] == ' ')
2360 command[n - 1] = '\0';
2367 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2379 va_start (ap, note_type);
2380 memset (data, 0, sizeof (data));
2381 strncpy (data + 32, va_arg (ap, const char *), 16);
2382 strncpy (data + 48, va_arg (ap, const char *), 80);
2384 return elfcore_write_note (abfd, buf, bufsiz,
2385 "CORE", note_type, data, sizeof (data));
2396 va_start (ap, note_type);
2397 memset (data, 0, 72);
2398 pid = va_arg (ap, long);
2399 bfd_put_32 (abfd, pid, data + 24);
2400 cursig = va_arg (ap, int);
2401 bfd_put_16 (abfd, cursig, data + 12);
2402 greg = va_arg (ap, const void *);
2403 memcpy (data + 72, greg, 192);
2404 memset (data + 264, 0, 4);
2406 return elfcore_write_note (abfd, buf, bufsiz,
2407 "CORE", note_type, data, sizeof (data));
2413 ppc_elf_lookup_section_flags (char *flag_name)
2416 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2422 /* Return address for Ith PLT stub in section PLT, for relocation REL
2423 or (bfd_vma) -1 if it should not be included. */
2426 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2427 const asection *plt ATTRIBUTE_UNUSED,
2430 return rel->address;
2433 /* Handle a PowerPC specific section when reading an object file. This
2434 is called when bfd_section_from_shdr finds a section with an unknown
2438 ppc_elf_section_from_shdr (bfd *abfd,
2439 Elf_Internal_Shdr *hdr,
2446 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2449 newsect = hdr->bfd_section;
2450 flags = bfd_get_section_flags (abfd, newsect);
2451 if (hdr->sh_flags & SHF_EXCLUDE)
2452 flags |= SEC_EXCLUDE;
2454 if (hdr->sh_type == SHT_ORDERED)
2455 flags |= SEC_SORT_ENTRIES;
2457 bfd_set_section_flags (abfd, newsect, flags);
2461 /* Set up any other section flags and such that may be necessary. */
2464 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2465 Elf_Internal_Shdr *shdr,
2468 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2469 shdr->sh_type = SHT_ORDERED;
2474 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2475 need to bump up the number of section headers. */
2478 ppc_elf_additional_program_headers (bfd *abfd,
2479 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2484 s = bfd_get_section_by_name (abfd, ".sbss2");
2485 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2488 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2489 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2495 /* Modify the segment map for VLE executables. */
2498 ppc_elf_modify_segment_map (bfd *abfd,
2499 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2501 struct elf_segment_map *m;
2503 /* At this point in the link, output sections have already been sorted by
2504 LMA and assigned to segments. All that is left to do is to ensure
2505 there is no mixing of VLE & non-VLE sections in a text segment.
2506 If we find that case, we split the segment.
2507 We maintain the original output section order. */
2509 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2511 struct elf_segment_map *n;
2514 unsigned int p_flags;
2516 if (m->p_type != PT_LOAD || m->count == 0)
2519 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2521 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2523 if ((m->sections[j]->flags & SEC_CODE) != 0)
2526 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2527 p_flags |= PF_PPC_VLE;
2532 while (++j != m->count)
2534 unsigned int p_flags1 = PF_R;
2536 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2538 if ((m->sections[j]->flags & SEC_CODE) != 0)
2541 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2542 p_flags1 |= PF_PPC_VLE;
2543 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2546 p_flags |= p_flags1;
2548 /* If we're splitting a segment which originally contained rw
2549 sections then those sections might now only be in one of the
2550 two parts. So always set p_flags if splitting, even if we
2551 are being called for objcopy with p_flags_valid set. */
2552 if (j != m->count || !m->p_flags_valid)
2554 m->p_flags_valid = 1;
2555 m->p_flags = p_flags;
2560 /* Sections 0..j-1 stay in this (current) segment,
2561 the remainder are put in a new segment.
2562 The scan resumes with the new segment. */
2564 amt = sizeof (struct elf_segment_map);
2565 amt += (m->count - j - 1) * sizeof (asection *);
2566 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2570 n->p_type = PT_LOAD;
2571 n->count = m->count - j;
2572 for (k = 0; k < n->count; ++k)
2573 n->sections[k] = m->sections[j + k];
2575 m->p_size_valid = 0;
2583 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2584 .PPC.EMB.sbss0 a normal section, and not a bss section so
2585 that the linker doesn't crater when trying to make more than
2588 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2590 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2591 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2592 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2593 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2594 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2595 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2596 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2597 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2598 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2599 { NULL, 0, 0, 0, 0 }
2602 /* This is what we want for new plt/got. */
2603 static struct bfd_elf_special_section ppc_alt_plt =
2604 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2606 static const struct bfd_elf_special_section *
2607 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2609 const struct bfd_elf_special_section *ssect;
2611 /* See if this is one of the special sections. */
2612 if (sec->name == NULL)
2615 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2619 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2620 ssect = &ppc_alt_plt;
2624 return _bfd_elf_get_sec_type_attr (abfd, sec);
2627 /* Very simple linked list structure for recording apuinfo values. */
2628 typedef struct apuinfo_list
2630 struct apuinfo_list *next;
2631 unsigned long value;
2635 static apuinfo_list *head;
2636 static bfd_boolean apuinfo_set;
2639 apuinfo_list_init (void)
2642 apuinfo_set = FALSE;
2646 apuinfo_list_add (unsigned long value)
2648 apuinfo_list *entry = head;
2650 while (entry != NULL)
2652 if (entry->value == value)
2654 entry = entry->next;
2657 entry = bfd_malloc (sizeof (* entry));
2661 entry->value = value;
2667 apuinfo_list_length (void)
2669 apuinfo_list *entry;
2670 unsigned long count;
2672 for (entry = head, count = 0;
2674 entry = entry->next)
2680 static inline unsigned long
2681 apuinfo_list_element (unsigned long number)
2683 apuinfo_list * entry;
2687 entry = entry->next)
2690 return entry ? entry->value : 0;
2694 apuinfo_list_finish (void)
2696 apuinfo_list *entry;
2698 for (entry = head; entry;)
2700 apuinfo_list *next = entry->next;
2708 /* Scan the input BFDs and create a linked list of
2709 the APUinfo values that will need to be emitted. */
2712 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2716 char *buffer = NULL;
2717 bfd_size_type largest_input_size = 0;
2719 unsigned long length;
2720 const char *error_message = NULL;
2722 if (link_info == NULL)
2725 apuinfo_list_init ();
2727 /* Read in the input sections contents. */
2728 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2730 unsigned long datum;
2732 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2736 /* xgettext:c-format */
2737 error_message = _("corrupt %s section in %pB");
2738 length = asec->size;
2743 if (largest_input_size < asec->size)
2747 largest_input_size = asec->size;
2748 buffer = bfd_malloc (largest_input_size);
2753 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2754 || (bfd_bread (buffer, length, ibfd) != length))
2756 /* xgettext:c-format */
2757 error_message = _("unable to read in %s section from %pB");
2761 /* Verify the contents of the header. Note - we have to
2762 extract the values this way in order to allow for a
2763 host whose endian-ness is different from the target. */
2764 datum = bfd_get_32 (ibfd, buffer);
2765 if (datum != sizeof APUINFO_LABEL)
2768 datum = bfd_get_32 (ibfd, buffer + 8);
2772 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2775 /* Get the number of bytes used for apuinfo entries. */
2776 datum = bfd_get_32 (ibfd, buffer + 4);
2777 if (datum + 20 != length)
2780 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2781 for (i = 0; i < datum; i += 4)
2782 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2785 error_message = NULL;
2789 /* Compute the size of the output section. */
2790 unsigned num_entries = apuinfo_list_length ();
2792 /* Set the output section size, if it exists. */
2793 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2795 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2798 /* xgettext:c-format */
2799 error_message = _("warning: unable to set size of %s section in %pB");
2808 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
2811 /* Prevent the output section from accumulating the input sections'
2812 contents. We have already stored this in our linked list structure. */
2815 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2816 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2818 bfd_byte *contents ATTRIBUTE_UNUSED)
2820 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2823 /* Finally we can generate the output section. */
2826 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2831 unsigned num_entries;
2832 bfd_size_type length;
2834 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2841 length = asec->size;
2845 buffer = bfd_malloc (length);
2849 (_("failed to allocate space for new APUinfo section"));
2853 /* Create the apuinfo header. */
2854 num_entries = apuinfo_list_length ();
2855 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2856 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2857 bfd_put_32 (abfd, 0x2, buffer + 8);
2858 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2861 for (i = 0; i < num_entries; i++)
2863 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2867 if (length != asec->size)
2868 _bfd_error_handler (_("failed to compute new APUinfo section"));
2870 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2871 _bfd_error_handler (_("failed to install new APUinfo section"));
2875 apuinfo_list_finish ();
2879 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2881 bfd_byte buf[4 * 4];
2883 if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf))
2886 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2887 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2888 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2889 && bfd_get_32 (abfd, buf + 12) == BCTR);
2893 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2895 bfd_vma vma = *(bfd_vma *) ptr;
2896 return ((section->flags & SEC_ALLOC) != 0
2897 && section->vma <= vma
2898 && vma < section->vma + section->size);
2902 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2903 long dynsymcount, asymbol **dynsyms,
2906 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2907 asection *plt, *relplt, *dynamic, *glink;
2908 bfd_vma glink_vma = 0;
2909 bfd_vma resolv_vma = 0;
2913 long count, i, stub_delta;
2920 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2923 if (dynsymcount <= 0)
2926 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2930 plt = bfd_get_section_by_name (abfd, ".plt");
2934 /* Call common code to handle old-style executable PLTs. */
2935 if (elf_section_flags (plt) & SHF_EXECINSTR)
2936 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2937 dynsymcount, dynsyms, ret);
2939 /* If this object was prelinked, the prelinker stored the address
2940 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2941 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2942 if (dynamic != NULL)
2944 bfd_byte *dynbuf, *extdyn, *extdynend;
2946 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2948 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2951 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2952 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2955 extdynend = extdyn + dynamic->size;
2956 for (; extdyn < extdynend; extdyn += extdynsize)
2958 Elf_Internal_Dyn dyn;
2959 (*swap_dyn_in) (abfd, extdyn, &dyn);
2961 if (dyn.d_tag == DT_NULL)
2964 if (dyn.d_tag == DT_PPC_GOT)
2966 unsigned int g_o_t = dyn.d_un.d_val;
2967 asection *got = bfd_get_section_by_name (abfd, ".got");
2969 && bfd_get_section_contents (abfd, got, buf,
2970 g_o_t - got->vma + 4, 4))
2971 glink_vma = bfd_get_32 (abfd, buf);
2978 /* Otherwise we read the first plt entry. */
2981 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2982 glink_vma = bfd_get_32 (abfd, buf);
2988 /* The .glink section usually does not survive the final
2989 link; search for the section (usually .text) where the
2990 glink stubs now reside. */
2991 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2995 /* Determine glink PLT resolver by reading the relative branch
2996 from the first glink stub. */
2997 if (bfd_get_section_contents (abfd, glink, buf,
2998 glink_vma - glink->vma, 4))
3000 unsigned int insn = bfd_get_32 (abfd, buf);
3002 /* The first glink stub may either branch to the resolver ... */
3004 if ((insn & ~0x3fffffc) == 0)
3005 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3007 /* ... or fall through a bunch of NOPs. */
3008 else if ((insn ^ B ^ NOP) == 0)
3010 bfd_get_section_contents (abfd, glink, buf,
3011 glink_vma - glink->vma + i, 4);
3013 if (bfd_get_32 (abfd, buf) != NOP)
3015 resolv_vma = glink_vma + i;
3020 count = relplt->size / sizeof (Elf32_External_Rela);
3021 /* If the stubs are those for -shared/-pie then we might have
3022 multiple stubs for each plt entry. If that is the case then
3023 there is no way to associate stubs with their plt entries short
3024 of figuring out the GOT pointer value used in the stub.
3025 The offsets tested here need to cover all possible values of
3026 GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
3027 stub_off = glink_vma - glink->vma;
3028 for (stub_delta = 16; stub_delta <= 32; stub_delta += 8)
3029 if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta))
3031 if (stub_delta > 32)
3034 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3035 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3038 size = count * sizeof (asymbol);
3039 p = relplt->relocation;
3040 for (i = 0; i < count; i++, p++)
3042 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3044 size += sizeof ("+0x") - 1 + 8;
3047 size += sizeof (asymbol) + sizeof ("__glink");
3050 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3052 s = *ret = bfd_malloc (size);
3056 stub_off = glink_vma - glink->vma;
3057 names = (char *) (s + count + 1 + (resolv_vma != 0));
3058 p = relplt->relocation + count - 1;
3059 for (i = 0; i < count; i++)
3063 stub_off -= stub_delta;
3064 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3066 *s = **p->sym_ptr_ptr;
3067 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3068 we are defining a symbol, ensure one of them is set. */
3069 if ((s->flags & BSF_LOCAL) == 0)
3070 s->flags |= BSF_GLOBAL;
3071 s->flags |= BSF_SYNTHETIC;
3073 s->value = stub_off;
3076 len = strlen ((*p->sym_ptr_ptr)->name);
3077 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3081 memcpy (names, "+0x", sizeof ("+0x") - 1);
3082 names += sizeof ("+0x") - 1;
3083 bfd_sprintf_vma (abfd, names, p->addend);
3084 names += strlen (names);
3086 memcpy (names, "@plt", sizeof ("@plt"));
3087 names += sizeof ("@plt");
3092 /* Add a symbol at the start of the glink branch table. */
3093 memset (s, 0, sizeof *s);
3095 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3097 s->value = glink_vma - glink->vma;
3099 memcpy (names, "__glink", sizeof ("__glink"));
3100 names += sizeof ("__glink");
3106 /* Add a symbol for the glink PLT resolver. */
3107 memset (s, 0, sizeof *s);
3109 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3111 s->value = resolv_vma - glink->vma;
3113 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3114 names += sizeof ("__glink_PLTresolve");
3122 /* The following functions are specific to the ELF linker, while
3123 functions above are used generally. They appear in this file more
3124 or less in the order in which they are called. eg.
3125 ppc_elf_check_relocs is called early in the link process,
3126 ppc_elf_finish_dynamic_sections is one of the last functions
3129 /* Track PLT entries needed for a given symbol. We might need more
3130 than one glink entry per symbol when generating a pic binary. */
3133 struct plt_entry *next;
3135 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3136 This field stores the offset into .got2 used to initialise the
3137 GOT pointer reg. It will always be at least 32768. (Current
3138 gcc always uses an offset of 32768, but ld -r will pack .got2
3139 sections together resulting in larger offsets). */
3142 /* The .got2 section. */
3145 /* PLT refcount or offset. */
3148 bfd_signed_vma refcount;
3152 /* .glink stub offset. */
3153 bfd_vma glink_offset;
3156 /* Of those relocs that might be copied as dynamic relocs, this
3157 function selects those that must be copied when linking a shared
3158 library or PIE, even when the symbol is local. */
3161 must_be_dyn_reloc (struct bfd_link_info *info,
3162 enum elf_ppc_reloc_type r_type)
3167 /* Only relative relocs can be resolved when the object load
3168 address isn't fixed. DTPREL32 is excluded because the
3169 dynamic linker needs to differentiate global dynamic from
3170 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3175 case R_PPC_REL14_BRTAKEN:
3176 case R_PPC_REL14_BRNTAKEN:
3182 case R_PPC_TPREL16_LO:
3183 case R_PPC_TPREL16_HI:
3184 case R_PPC_TPREL16_HA:
3185 /* These relocations are relative but in a shared library the
3186 linker doesn't know the thread pointer base. */
3187 return bfd_link_dll (info);
3191 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3192 copying dynamic variables from a shared lib into an app's dynbss
3193 section, and instead use a dynamic relocation to point into the
3195 #define ELIMINATE_COPY_RELOCS 1
3197 /* Used to track dynamic relocations for local symbols. */
3198 struct ppc_dyn_relocs
3200 struct ppc_dyn_relocs *next;
3202 /* The input section of the reloc. */
3205 /* Total number of relocs copied for the input section. */
3206 unsigned int count : 31;
3208 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3209 unsigned int ifunc : 1;
3212 /* PPC ELF linker hash entry. */
3214 struct ppc_elf_link_hash_entry
3216 struct elf_link_hash_entry elf;
3218 /* If this symbol is used in the linker created sections, the processor
3219 specific backend uses this field to map the field into the offset
3220 from the beginning of the section. */
3221 elf_linker_section_pointers_t *linker_section_pointer;
3223 /* Track dynamic relocs copied for this symbol. */
3224 struct elf_dyn_relocs *dyn_relocs;
3226 /* Contexts in which symbol is used in the GOT (or TOC).
3227 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3228 corresponding relocs are encountered during check_relocs.
3229 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3230 indicate the corresponding GOT entry type is not needed. */
3231 #define TLS_GD 1 /* GD reloc. */
3232 #define TLS_LD 2 /* LD reloc. */
3233 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3234 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3235 #define TLS_TLS 16 /* Any TLS reloc. */
3236 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3237 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3240 /* Nonzero if we have seen a small data relocation referring to this
3242 unsigned char has_sda_refs : 1;
3244 /* Flag use of given relocations. */
3245 unsigned char has_addr16_ha : 1;
3246 unsigned char has_addr16_lo : 1;
3249 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3251 /* PPC ELF linker hash table. */
3253 struct ppc_elf_link_hash_table
3255 struct elf_link_hash_table elf;
3257 /* Various options passed from the linker. */
3258 struct ppc_elf_params *params;
3260 /* Short-cuts to get to dynamic linker sections. */
3264 elf_linker_section_t sdata[2];
3266 asection *glink_eh_frame;
3268 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3271 /* Shortcut to __tls_get_addr. */
3272 struct elf_link_hash_entry *tls_get_addr;
3274 /* The bfd that forced an old-style PLT. */
3277 /* TLS local dynamic got entry handling. */
3279 bfd_signed_vma refcount;
3283 /* Offset of branch table to PltResolve function in glink. */
3284 bfd_vma glink_pltresolve;
3286 /* Size of reserved GOT entries. */
3287 unsigned int got_header_size;
3288 /* Non-zero if allocating the header left a gap. */
3289 unsigned int got_gap;
3291 /* The type of PLT we have chosen to use. */
3292 enum ppc_elf_plt_type plt_type;
3294 /* True if the target system is VxWorks. */
3295 unsigned int is_vxworks:1;
3297 /* Whether there exist local gnu indirect function resolvers,
3298 referenced by dynamic relocations. */
3299 unsigned int local_ifunc_resolver:1;
3300 unsigned int maybe_local_ifunc_resolver:1;
3302 /* Set if tls optimization is enabled. */
3303 unsigned int do_tls_opt:1;
3305 /* The size of PLT entries. */
3307 /* The distance between adjacent PLT slots. */
3309 /* The size of the first PLT entry. */
3310 int plt_initial_entry_size;
3312 /* Small local sym cache. */
3313 struct sym_cache sym_cache;
3316 /* Rename some of the generic section flags to better document how they
3317 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3319 /* Nonzero if this section has TLS related relocations. */
3320 #define has_tls_reloc sec_flg0
3322 /* Nonzero if this section has a call to __tls_get_addr. */
3323 #define has_tls_get_addr_call sec_flg1
3325 /* Get the PPC ELF linker hash table from a link_info structure. */
3327 #define ppc_elf_hash_table(p) \
3328 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3329 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3331 /* Create an entry in a PPC ELF linker hash table. */
3333 static struct bfd_hash_entry *
3334 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3335 struct bfd_hash_table *table,
3338 /* Allocate the structure if it has not already been allocated by a
3342 entry = bfd_hash_allocate (table,
3343 sizeof (struct ppc_elf_link_hash_entry));
3348 /* Call the allocation method of the superclass. */
3349 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3352 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3353 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3354 ppc_elf_hash_entry (entry)->tls_mask = 0;
3355 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3361 /* Create a PPC ELF linker hash table. */
3363 static struct bfd_link_hash_table *
3364 ppc_elf_link_hash_table_create (bfd *abfd)
3366 struct ppc_elf_link_hash_table *ret;
3367 static struct ppc_elf_params default_params
3368 = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
3370 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3374 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3375 ppc_elf_link_hash_newfunc,
3376 sizeof (struct ppc_elf_link_hash_entry),
3383 ret->elf.init_plt_refcount.refcount = 0;
3384 ret->elf.init_plt_refcount.glist = NULL;
3385 ret->elf.init_plt_offset.offset = 0;
3386 ret->elf.init_plt_offset.glist = NULL;
3388 ret->params = &default_params;
3390 ret->sdata[0].name = ".sdata";
3391 ret->sdata[0].sym_name = "_SDA_BASE_";
3392 ret->sdata[0].bss_name = ".sbss";
3394 ret->sdata[1].name = ".sdata2";
3395 ret->sdata[1].sym_name = "_SDA2_BASE_";
3396 ret->sdata[1].bss_name = ".sbss2";
3398 ret->plt_entry_size = 12;
3399 ret->plt_slot_size = 8;
3400 ret->plt_initial_entry_size = 72;
3402 return &ret->elf.root;
3405 /* Hook linker params into hash table. */
3408 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3410 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3413 htab->params = params;
3414 params->pagesize_p2 = bfd_log2 (params->pagesize);
3417 /* Create .got and the related sections. */
3420 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3422 struct ppc_elf_link_hash_table *htab;
3424 if (!_bfd_elf_create_got_section (abfd, info))
3427 htab = ppc_elf_hash_table (info);
3428 if (!htab->is_vxworks)
3430 /* The powerpc .got has a blrl instruction in it. Mark it
3432 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3433 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3434 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3441 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3442 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3443 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3446 ppc_elf_create_linker_section (bfd *abfd,
3447 struct bfd_link_info *info,
3449 elf_linker_section_t *lsect)
3453 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3454 | SEC_LINKER_CREATED);
3456 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3461 /* Define the sym on the first section of this name. */
3462 s = bfd_get_section_by_name (abfd, lsect->name);
3464 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3465 if (lsect->sym == NULL)
3467 lsect->sym->root.u.def.value = 0x8000;
3472 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3474 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3479 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3480 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3481 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3483 p2align = htab->params->ppc476_workaround ? 6 : 4;
3484 if (p2align < htab->params->plt_stub_align)
3485 p2align = htab->params->plt_stub_align;
3487 || !bfd_set_section_alignment (abfd, s, p2align))
3490 if (!info->no_ld_generated_unwind_info)
3492 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3493 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3494 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3495 htab->glink_eh_frame = s;
3497 || !bfd_set_section_alignment (abfd, s, 2))
3501 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3502 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3505 || !bfd_set_section_alignment (abfd, s, 4))
3508 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3509 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3510 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3511 htab->elf.irelplt = s;
3513 || ! bfd_set_section_alignment (abfd, s, 2))
3516 if (!ppc_elf_create_linker_section (abfd, info, 0,
3520 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3527 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3528 to output sections (just like _bfd_elf_create_dynamic_sections has
3529 to create .dynbss and .rela.bss). */
3532 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3534 struct ppc_elf_link_hash_table *htab;
3538 htab = ppc_elf_hash_table (info);
3540 if (htab->elf.sgot == NULL
3541 && !ppc_elf_create_got (abfd, info))
3544 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3547 if (htab->glink == NULL
3548 && !ppc_elf_create_glink (abfd, info))
3551 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3552 SEC_ALLOC | SEC_LINKER_CREATED);
3557 if (! bfd_link_pic (info))
3559 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3560 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3561 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3564 || ! bfd_set_section_alignment (abfd, s, 2))
3568 if (htab->is_vxworks
3569 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3573 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3574 if (htab->plt_type == PLT_VXWORKS)
3575 /* The VxWorks PLT is a loaded section with contents. */
3576 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3577 return bfd_set_section_flags (abfd, s, flags);
3580 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3583 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3584 struct elf_link_hash_entry *dir,
3585 struct elf_link_hash_entry *ind)
3587 struct ppc_elf_link_hash_entry *edir, *eind;
3589 edir = (struct ppc_elf_link_hash_entry *) dir;
3590 eind = (struct ppc_elf_link_hash_entry *) ind;
3592 edir->tls_mask |= eind->tls_mask;
3593 edir->has_sda_refs |= eind->has_sda_refs;
3595 if (edir->elf.versioned != versioned_hidden)
3596 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3597 edir->elf.ref_regular |= eind->elf.ref_regular;
3598 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3599 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3600 edir->elf.needs_plt |= eind->elf.needs_plt;
3601 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3603 /* If we were called to copy over info for a weak sym, that's all. */
3604 if (eind->elf.root.type != bfd_link_hash_indirect)
3607 if (eind->dyn_relocs != NULL)
3609 if (edir->dyn_relocs != NULL)
3611 struct elf_dyn_relocs **pp;
3612 struct elf_dyn_relocs *p;
3614 /* Add reloc counts against the indirect sym to the direct sym
3615 list. Merge any entries against the same section. */
3616 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3618 struct elf_dyn_relocs *q;
3620 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3621 if (q->sec == p->sec)
3623 q->pc_count += p->pc_count;
3624 q->count += p->count;
3631 *pp = edir->dyn_relocs;
3634 edir->dyn_relocs = eind->dyn_relocs;
3635 eind->dyn_relocs = NULL;
3638 /* Copy over the GOT refcount entries that we may have already seen to
3639 the symbol which just became indirect. */
3640 edir->elf.got.refcount += eind->elf.got.refcount;
3641 eind->elf.got.refcount = 0;
3643 /* And plt entries. */
3644 if (eind->elf.plt.plist != NULL)
3646 if (edir->elf.plt.plist != NULL)
3648 struct plt_entry **entp;
3649 struct plt_entry *ent;
3651 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3653 struct plt_entry *dent;
3655 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3656 if (dent->sec == ent->sec && dent->addend == ent->addend)
3658 dent->plt.refcount += ent->plt.refcount;
3665 *entp = edir->elf.plt.plist;
3668 edir->elf.plt.plist = eind->elf.plt.plist;
3669 eind->elf.plt.plist = NULL;
3672 if (eind->elf.dynindx != -1)
3674 if (edir->elf.dynindx != -1)
3675 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3676 edir->elf.dynstr_index);
3677 edir->elf.dynindx = eind->elf.dynindx;
3678 edir->elf.dynstr_index = eind->elf.dynstr_index;
3679 eind->elf.dynindx = -1;
3680 eind->elf.dynstr_index = 0;
3684 /* Hook called by the linker routine which adds symbols from an object
3685 file. We use it to put .comm items in .sbss, and not .bss. */
3688 ppc_elf_add_symbol_hook (bfd *abfd,
3689 struct bfd_link_info *info,
3690 Elf_Internal_Sym *sym,
3691 const char **namep ATTRIBUTE_UNUSED,
3692 flagword *flagsp ATTRIBUTE_UNUSED,
3696 if (sym->st_shndx == SHN_COMMON
3697 && !bfd_link_relocatable (info)
3698 && is_ppc_elf (info->output_bfd)
3699 && sym->st_size <= elf_gp_size (abfd))
3701 /* Common symbols less than or equal to -G nn bytes are automatically
3703 struct ppc_elf_link_hash_table *htab;
3705 htab = ppc_elf_hash_table (info);
3706 if (htab->sbss == NULL)
3708 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3710 if (!htab->elf.dynobj)
3711 htab->elf.dynobj = abfd;
3713 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3716 if (htab->sbss == NULL)
3721 *valp = sym->st_size;
3724 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3725 && (abfd->flags & DYNAMIC) == 0
3726 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3727 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3732 /* Find a linker generated pointer with a given addend and type. */
3734 static elf_linker_section_pointers_t *
3735 elf_find_pointer_linker_section
3736 (elf_linker_section_pointers_t *linker_pointers,
3738 elf_linker_section_t *lsect)
3740 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3741 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3742 return linker_pointers;
3747 /* Allocate a pointer to live in a linker created section. */
3750 elf_allocate_pointer_linker_section (bfd *abfd,
3751 elf_linker_section_t *lsect,
3752 struct elf_link_hash_entry *h,
3753 const Elf_Internal_Rela *rel)
3755 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3756 elf_linker_section_pointers_t *linker_section_ptr;
3757 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3760 BFD_ASSERT (lsect != NULL);
3762 /* Is this a global symbol? */
3765 struct ppc_elf_link_hash_entry *eh;
3767 /* Has this symbol already been allocated? If so, our work is done. */
3768 eh = (struct ppc_elf_link_hash_entry *) h;
3769 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3774 ptr_linker_section_ptr = &eh->linker_section_pointer;
3778 BFD_ASSERT (is_ppc_elf (abfd));
3780 /* Allocation of a pointer to a local symbol. */
3781 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3783 /* Allocate a table to hold the local symbols if first time. */
3786 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3789 amt *= sizeof (elf_linker_section_pointers_t *);
3790 ptr = bfd_zalloc (abfd, amt);
3795 elf_local_ptr_offsets (abfd) = ptr;
3798 /* Has this symbol already been allocated? If so, our work is done. */
3799 if (elf_find_pointer_linker_section (ptr[r_symndx],
3804 ptr_linker_section_ptr = &ptr[r_symndx];
3807 /* Allocate space for a pointer in the linker section, and allocate
3808 a new pointer record from internal memory. */
3809 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3810 amt = sizeof (elf_linker_section_pointers_t);
3811 linker_section_ptr = bfd_alloc (abfd, amt);
3813 if (!linker_section_ptr)
3816 linker_section_ptr->next = *ptr_linker_section_ptr;
3817 linker_section_ptr->addend = rel->r_addend;
3818 linker_section_ptr->lsect = lsect;
3819 *ptr_linker_section_ptr = linker_section_ptr;
3821 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3823 linker_section_ptr->offset = lsect->section->size;
3824 lsect->section->size += 4;
3828 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3829 lsect->name, (long) linker_section_ptr->offset,
3830 (long) lsect->section->size);
3836 static struct plt_entry **
3837 update_local_sym_info (bfd *abfd,
3838 Elf_Internal_Shdr *symtab_hdr,
3839 unsigned long r_symndx,
3842 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3843 struct plt_entry **local_plt;
3844 char *local_got_tls_masks;
3846 if (local_got_refcounts == NULL)
3848 bfd_size_type size = symtab_hdr->sh_info;
3850 size *= (sizeof (*local_got_refcounts)
3851 + sizeof (*local_plt)
3852 + sizeof (*local_got_tls_masks));
3853 local_got_refcounts = bfd_zalloc (abfd, size);
3854 if (local_got_refcounts == NULL)
3856 elf_local_got_refcounts (abfd) = local_got_refcounts;
3859 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3860 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3861 local_got_tls_masks[r_symndx] |= tls_type;
3862 if (tls_type != PLT_IFUNC)
3863 local_got_refcounts[r_symndx] += 1;
3864 return local_plt + r_symndx;
3868 update_plt_info (bfd *abfd, struct plt_entry **plist,
3869 asection *sec, bfd_vma addend)
3871 struct plt_entry *ent;
3875 for (ent = *plist; ent != NULL; ent = ent->next)
3876 if (ent->sec == sec && ent->addend == addend)
3880 bfd_size_type amt = sizeof (*ent);
3881 ent = bfd_alloc (abfd, amt);
3886 ent->addend = addend;
3887 ent->plt.refcount = 0;
3890 ent->plt.refcount += 1;
3894 static struct plt_entry *
3895 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3897 struct plt_entry *ent;
3901 for (ent = *plist; ent != NULL; ent = ent->next)
3902 if (ent->sec == sec && ent->addend == addend)
3908 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3910 return (r_type == R_PPC_PLTREL24
3911 || r_type == R_PPC_LOCAL24PC
3912 || r_type == R_PPC_REL24
3913 || r_type == R_PPC_REL14
3914 || r_type == R_PPC_REL14_BRTAKEN
3915 || r_type == R_PPC_REL14_BRNTAKEN
3916 || r_type == R_PPC_ADDR24
3917 || r_type == R_PPC_ADDR14
3918 || r_type == R_PPC_ADDR14_BRTAKEN
3919 || r_type == R_PPC_ADDR14_BRNTAKEN
3920 || r_type == R_PPC_VLE_REL24);
3924 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3927 /* xgettext:c-format */
3928 (_("%pB: relocation %s cannot be used when making a shared object"),
3930 ppc_elf_howto_table[r_type]->name);
3931 bfd_set_error (bfd_error_bad_value);
3934 /* Look through the relocs for a section during the first phase, and
3935 allocate space in the global offset table or procedure linkage
3939 ppc_elf_check_relocs (bfd *abfd,
3940 struct bfd_link_info *info,
3942 const Elf_Internal_Rela *relocs)
3944 struct ppc_elf_link_hash_table *htab;
3945 Elf_Internal_Shdr *symtab_hdr;
3946 struct elf_link_hash_entry **sym_hashes;
3947 const Elf_Internal_Rela *rel;
3948 const Elf_Internal_Rela *rel_end;
3949 asection *got2, *sreloc;
3950 struct elf_link_hash_entry *tga;
3952 if (bfd_link_relocatable (info))
3955 /* Don't do anything special with non-loaded, non-alloced sections.
3956 In particular, any relocs in such sections should not affect GOT
3957 and PLT reference counting (ie. we don't allow them to create GOT
3958 or PLT entries), there's no possibility or desire to optimize TLS
3959 relocs, and there's not much point in propagating relocs to shared
3960 libs that the dynamic linker won't relocate. */
3961 if ((sec->flags & SEC_ALLOC) == 0)
3965 _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
3969 BFD_ASSERT (is_ppc_elf (abfd));
3971 /* Initialize howto table if not already done. */
3972 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3973 ppc_elf_howto_init ();
3975 htab = ppc_elf_hash_table (info);
3976 if (htab->glink == NULL)
3978 if (htab->elf.dynobj == NULL)
3979 htab->elf.dynobj = abfd;
3980 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3983 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3984 FALSE, FALSE, TRUE);
3985 symtab_hdr = &elf_symtab_hdr (abfd);
3986 sym_hashes = elf_sym_hashes (abfd);
3987 got2 = bfd_get_section_by_name (abfd, ".got2");
3990 rel_end = relocs + sec->reloc_count;
3991 for (rel = relocs; rel < rel_end; rel++)
3993 unsigned long r_symndx;
3994 enum elf_ppc_reloc_type r_type;
3995 struct elf_link_hash_entry *h;
3997 struct plt_entry **ifunc;
3999 r_symndx = ELF32_R_SYM (rel->r_info);
4000 if (r_symndx < symtab_hdr->sh_info)
4004 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4005 while (h->root.type == bfd_link_hash_indirect
4006 || h->root.type == bfd_link_hash_warning)
4007 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4010 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4011 This shows up in particular in an R_PPC_ADDR32 in the eabi
4014 && htab->elf.sgot == NULL
4015 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4017 if (htab->elf.dynobj == NULL)
4018 htab->elf.dynobj = abfd;
4019 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4021 BFD_ASSERT (h == htab->elf.hgot);
4025 r_type = ELF32_R_TYPE (rel->r_info);
4027 if (h == NULL && !htab->is_vxworks)
4029 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4034 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4036 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4037 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4042 /* STT_GNU_IFUNC symbols must have a PLT entry;
4043 In a non-pie executable even when there are
4045 if (!bfd_link_pic (info)
4046 || is_branch_reloc (r_type))
4049 if (r_type == R_PPC_PLTREL24)
4051 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4052 if (bfd_link_pic (info))
4053 addend = rel->r_addend;
4055 if (!update_plt_info (abfd, ifunc, got2, addend))
4061 if (!htab->is_vxworks
4062 && is_branch_reloc (r_type)
4067 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4068 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4069 /* We have a new-style __tls_get_addr call with a marker
4073 /* Mark this section as having an old-style call. */
4074 sec->has_tls_get_addr_call = 1;
4081 /* These special tls relocs tie a call to __tls_get_addr with
4082 its parameter symbol. */
4085 case R_PPC_GOT_TLSLD16:
4086 case R_PPC_GOT_TLSLD16_LO:
4087 case R_PPC_GOT_TLSLD16_HI:
4088 case R_PPC_GOT_TLSLD16_HA:
4089 tls_type = TLS_TLS | TLS_LD;
4092 case R_PPC_GOT_TLSGD16:
4093 case R_PPC_GOT_TLSGD16_LO:
4094 case R_PPC_GOT_TLSGD16_HI:
4095 case R_PPC_GOT_TLSGD16_HA:
4096 tls_type = TLS_TLS | TLS_GD;
4099 case R_PPC_GOT_TPREL16:
4100 case R_PPC_GOT_TPREL16_LO:
4101 case R_PPC_GOT_TPREL16_HI:
4102 case R_PPC_GOT_TPREL16_HA:
4103 if (bfd_link_dll (info))
4104 info->flags |= DF_STATIC_TLS;
4105 tls_type = TLS_TLS | TLS_TPREL;
4108 case R_PPC_GOT_DTPREL16:
4109 case R_PPC_GOT_DTPREL16_LO:
4110 case R_PPC_GOT_DTPREL16_HI:
4111 case R_PPC_GOT_DTPREL16_HA:
4112 tls_type = TLS_TLS | TLS_DTPREL;
4114 sec->has_tls_reloc = 1;
4117 /* GOT16 relocations */
4119 case R_PPC_GOT16_LO:
4120 case R_PPC_GOT16_HI:
4121 case R_PPC_GOT16_HA:
4122 /* This symbol requires a global offset table entry. */
4123 if (htab->elf.sgot == NULL)
4125 if (htab->elf.dynobj == NULL)
4126 htab->elf.dynobj = abfd;
4127 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4132 h->got.refcount += 1;
4133 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4136 /* This is a global offset table entry for a local symbol. */
4137 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4140 /* We may also need a plt entry if the symbol turns out to be
4142 if (h != NULL && !bfd_link_pic (info))
4144 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4149 /* Indirect .sdata relocation. */
4150 case R_PPC_EMB_SDAI16:
4151 if (bfd_link_pic (info))
4153 bad_shared_reloc (abfd, r_type);
4156 htab->sdata[0].sym->ref_regular = 1;
4157 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4162 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4163 h->non_got_ref = TRUE;
4167 /* Indirect .sdata2 relocation. */
4168 case R_PPC_EMB_SDA2I16:
4169 if (bfd_link_pic (info))
4171 bad_shared_reloc (abfd, r_type);
4174 htab->sdata[1].sym->ref_regular = 1;
4175 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4180 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4181 h->non_got_ref = TRUE;
4185 case R_PPC_SDAREL16:
4186 htab->sdata[0].sym->ref_regular = 1;
4189 case R_PPC_VLE_SDAREL_LO16A:
4190 case R_PPC_VLE_SDAREL_LO16D:
4191 case R_PPC_VLE_SDAREL_HI16A:
4192 case R_PPC_VLE_SDAREL_HI16D:
4193 case R_PPC_VLE_SDAREL_HA16A:
4194 case R_PPC_VLE_SDAREL_HA16D:
4197 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4198 h->non_got_ref = TRUE;
4202 case R_PPC_VLE_REL8:
4203 case R_PPC_VLE_REL15:
4204 case R_PPC_VLE_REL24:
4205 case R_PPC_VLE_LO16A:
4206 case R_PPC_VLE_LO16D:
4207 case R_PPC_VLE_HI16A:
4208 case R_PPC_VLE_HI16D:
4209 case R_PPC_VLE_HA16A:
4210 case R_PPC_VLE_HA16D:
4211 case R_PPC_VLE_ADDR20:
4214 case R_PPC_EMB_SDA2REL:
4215 if (bfd_link_pic (info))
4217 bad_shared_reloc (abfd, r_type);
4220 htab->sdata[1].sym->ref_regular = 1;
4223 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4224 h->non_got_ref = TRUE;
4228 case R_PPC_VLE_SDA21_LO:
4229 case R_PPC_VLE_SDA21:
4230 case R_PPC_EMB_SDA21:
4231 case R_PPC_EMB_RELSDA:
4232 if (bfd_link_pic (info))
4234 bad_shared_reloc (abfd, r_type);
4239 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4240 h->non_got_ref = TRUE;
4244 case R_PPC_EMB_NADDR32:
4245 case R_PPC_EMB_NADDR16:
4246 case R_PPC_EMB_NADDR16_LO:
4247 case R_PPC_EMB_NADDR16_HI:
4248 case R_PPC_EMB_NADDR16_HA:
4249 if (bfd_link_pic (info))
4251 bad_shared_reloc (abfd, r_type);
4255 h->non_got_ref = TRUE;
4258 case R_PPC_PLTREL24:
4263 case R_PPC_PLTREL32:
4264 case R_PPC_PLT16_LO:
4265 case R_PPC_PLT16_HI:
4266 case R_PPC_PLT16_HA:
4268 fprintf (stderr, "Reloc requires a PLT entry\n");
4270 /* This symbol requires a procedure linkage table entry. */
4275 /* It does not make sense to have a procedure linkage
4276 table entry for a non-ifunc local symbol. */
4277 info->callbacks->einfo
4278 /* xgettext:c-format */
4279 (_("%H: %s reloc against local symbol\n"),
4280 abfd, sec, rel->r_offset,
4281 ppc_elf_howto_table[r_type]->name);
4282 bfd_set_error (bfd_error_bad_value);
4290 if (r_type == R_PPC_PLTREL24)
4292 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4293 if (bfd_link_pic (info))
4294 addend = rel->r_addend;
4297 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4302 /* The following relocations don't need to propagate the
4303 relocation if linking a shared object since they are
4304 section relative. */
4306 case R_PPC_SECTOFF_LO:
4307 case R_PPC_SECTOFF_HI:
4308 case R_PPC_SECTOFF_HA:
4309 case R_PPC_DTPREL16:
4310 case R_PPC_DTPREL16_LO:
4311 case R_PPC_DTPREL16_HI:
4312 case R_PPC_DTPREL16_HA:
4317 case R_PPC_REL16_LO:
4318 case R_PPC_REL16_HI:
4319 case R_PPC_REL16_HA:
4320 case R_PPC_REL16DX_HA:
4321 ppc_elf_tdata (abfd)->has_rel16 = 1;
4324 /* These are just markers. */
4326 case R_PPC_EMB_MRKREF:
4330 case R_PPC_RELAX_PLT:
4331 case R_PPC_RELAX_PLTREL24:
4335 /* These should only appear in dynamic objects. */
4337 case R_PPC_GLOB_DAT:
4338 case R_PPC_JMP_SLOT:
4339 case R_PPC_RELATIVE:
4340 case R_PPC_IRELATIVE:
4343 /* These aren't handled yet. We'll report an error later. */
4345 case R_PPC_EMB_RELSEC16:
4346 case R_PPC_EMB_RELST_LO:
4347 case R_PPC_EMB_RELST_HI:
4348 case R_PPC_EMB_RELST_HA:
4349 case R_PPC_EMB_BIT_FLD:
4352 /* This refers only to functions defined in the shared library. */
4353 case R_PPC_LOCAL24PC:
4354 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4356 htab->plt_type = PLT_OLD;
4357 htab->old_bfd = abfd;
4359 if (h != NULL && h->type == STT_GNU_IFUNC)
4362 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4367 /* This relocation describes the C++ object vtable hierarchy.
4368 Reconstruct it for later use during GC. */
4369 case R_PPC_GNU_VTINHERIT:
4370 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4374 /* This relocation describes which C++ vtable entries are actually
4375 used. Record for later use during GC. */
4376 case R_PPC_GNU_VTENTRY:
4377 BFD_ASSERT (h != NULL);
4379 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4383 /* We shouldn't really be seeing TPREL32. */
4386 case R_PPC_TPREL16_LO:
4387 case R_PPC_TPREL16_HI:
4388 case R_PPC_TPREL16_HA:
4389 if (bfd_link_dll (info))
4390 info->flags |= DF_STATIC_TLS;
4394 case R_PPC_DTPMOD32:
4395 case R_PPC_DTPREL32:
4401 && (sec->flags & SEC_CODE) != 0
4402 && bfd_link_pic (info)
4403 && htab->plt_type == PLT_UNSET)
4405 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4406 the start of a function, which assembles to a REL32
4407 reference to .got2. If we detect one of these, then
4408 force the old PLT layout because the linker cannot
4409 reliably deduce the GOT pointer value needed for
4412 Elf_Internal_Sym *isym;
4414 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4419 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4422 htab->plt_type = PLT_OLD;
4423 htab->old_bfd = abfd;
4426 if (h == NULL || h == htab->elf.hgot)
4432 case R_PPC_ADDR16_LO:
4433 case R_PPC_ADDR16_HI:
4434 case R_PPC_ADDR16_HA:
4437 if (h != NULL && !bfd_link_pic (info))
4439 /* We may need a plt entry if the symbol turns out to be
4440 a function defined in a dynamic object. */
4441 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4444 /* We may need a copy reloc too. */
4446 h->pointer_equality_needed = 1;
4447 if (r_type == R_PPC_ADDR16_HA)
4448 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4449 if (r_type == R_PPC_ADDR16_LO)
4450 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4456 case R_PPC_REL14_BRTAKEN:
4457 case R_PPC_REL14_BRNTAKEN:
4460 if (h == htab->elf.hgot)
4462 if (htab->plt_type == PLT_UNSET)
4464 htab->plt_type = PLT_OLD;
4465 htab->old_bfd = abfd;
4473 case R_PPC_ADDR14_BRTAKEN:
4474 case R_PPC_ADDR14_BRNTAKEN:
4475 if (h != NULL && !bfd_link_pic (info))
4477 /* We may need a plt entry if the symbol turns out to be
4478 a function defined in a dynamic object. */
4480 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4486 /* If we are creating a shared library, and this is a reloc
4487 against a global symbol, or a non PC relative reloc
4488 against a local symbol, then we need to copy the reloc
4489 into the shared library. However, if we are linking with
4490 -Bsymbolic, we do not need to copy a reloc against a
4491 global symbol which is defined in an object we are
4492 including in the link (i.e., DEF_REGULAR is set). At
4493 this point we have not seen all the input files, so it is
4494 possible that DEF_REGULAR is not set now but will be set
4495 later (it is never cleared). In case of a weak definition,
4496 DEF_REGULAR may be cleared later by a strong definition in
4497 a shared library. We account for that possibility below by
4498 storing information in the dyn_relocs field of the hash
4499 table entry. A similar situation occurs when creating
4500 shared libraries and symbol visibility changes render the
4503 If on the other hand, we are creating an executable, we
4504 may need to keep relocations for symbols satisfied by a
4505 dynamic library if we manage to avoid copy relocs for the
4507 if ((bfd_link_pic (info)
4508 && (must_be_dyn_reloc (info, r_type)
4510 && (!SYMBOLIC_BIND (info, h)
4511 || h->root.type == bfd_link_hash_defweak
4512 || !h->def_regular))))
4513 || (ELIMINATE_COPY_RELOCS
4514 && !bfd_link_pic (info)
4516 && (h->root.type == bfd_link_hash_defweak
4517 || !h->def_regular)))
4521 "ppc_elf_check_relocs needs to "
4522 "create relocation for %s\n",
4523 (h && h->root.root.string
4524 ? h->root.root.string : "<unknown>"));
4528 if (htab->elf.dynobj == NULL)
4529 htab->elf.dynobj = abfd;
4531 sreloc = _bfd_elf_make_dynamic_reloc_section
4532 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4538 /* If this is a global symbol, we count the number of
4539 relocations we need for this symbol. */
4542 struct elf_dyn_relocs *p;
4543 struct elf_dyn_relocs **rel_head;
4545 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4547 if (p == NULL || p->sec != sec)
4549 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4552 p->next = *rel_head;
4559 if (!must_be_dyn_reloc (info, r_type))
4564 /* Track dynamic relocs needed for local syms too.
4565 We really need local syms available to do this
4567 struct ppc_dyn_relocs *p;
4568 struct ppc_dyn_relocs **rel_head;
4569 bfd_boolean is_ifunc;
4572 Elf_Internal_Sym *isym;
4574 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4579 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4583 vpp = &elf_section_data (s)->local_dynrel;
4584 rel_head = (struct ppc_dyn_relocs **) vpp;
4585 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4587 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4589 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4591 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4594 p->next = *rel_head;
4597 p->ifunc = is_ifunc;
4611 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4612 and OBFD, and merge non-conflicting ones. */
4614 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4616 bfd *obfd = info->output_bfd;
4617 obj_attribute *in_attr, *in_attrs;
4618 obj_attribute *out_attr, *out_attrs;
4620 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4621 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4623 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4624 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4626 if (in_attr->i != out_attr->i)
4628 int in_fp = in_attr->i & 3;
4629 int out_fp = out_attr->i & 3;
4633 else if (out_fp == 0)
4636 out_attr->i ^= in_fp;
4638 else if (out_fp != 2 && in_fp == 2)
4640 /* xgettext:c-format */
4641 (_("warning: %pB uses hard float, %pB uses soft float"), obfd, ibfd);
4642 else if (out_fp == 2 && in_fp != 2)
4644 /* xgettext:c-format */
4645 (_("warning: %pB uses hard float, %pB uses soft float"), ibfd, obfd);
4646 else if (out_fp == 1 && in_fp == 3)
4648 /* xgettext:c-format */
4649 (_("warning: %pB uses double-precision hard float, "
4650 "%pB uses single-precision hard float"), obfd, ibfd);
4651 else if (out_fp == 3 && in_fp == 1)
4653 /* xgettext:c-format */
4654 (_("warning: %pB uses double-precision hard float, "
4655 "%pB uses single-precision hard float"), ibfd, obfd);
4657 in_fp = in_attr->i & 0xc;
4658 out_fp = out_attr->i & 0xc;
4661 else if (out_fp == 0)
4664 out_attr->i ^= in_fp;
4666 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4668 /* xgettext:c-format */
4669 (_("warning: %pB uses 64-bit long double, "
4670 "%pB uses 128-bit long double"), ibfd, obfd);
4671 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4673 /* xgettext:c-format */
4674 (_("warning: %pB uses 64-bit long double, "
4675 "%pB uses 128-bit long double"), obfd, ibfd);
4676 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4678 /* xgettext:c-format */
4679 (_("warning: %pB uses IBM long double, "
4680 "%pB uses IEEE long double"), ibfd, obfd);
4681 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4683 /* xgettext:c-format */
4684 (_("warning: %pB uses IBM long double, "
4685 "%pB uses IEEE long double"), obfd, ibfd);
4689 /* Merge object attributes from IBFD into OBFD. Warn if
4690 there are conflicting attributes. */
4692 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4695 obj_attribute *in_attr, *in_attrs;
4696 obj_attribute *out_attr, *out_attrs;
4698 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4700 obfd = info->output_bfd;
4701 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4702 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4704 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4705 merge non-conflicting ones. */
4706 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4707 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4708 if (in_attr->i != out_attr->i)
4710 int in_vec = in_attr->i & 3;
4711 int out_vec = out_attr->i & 3;
4715 else if (out_vec == 0)
4718 out_attr->i = in_vec;
4720 /* For now, allow generic to transition to AltiVec or SPE
4721 without a warning. If GCC marked files with their stack
4722 alignment and used don't-care markings for files which are
4723 not affected by the vector ABI, we could warn about this
4725 else if (in_vec == 1)
4727 else if (out_vec == 1)
4730 out_attr->i = in_vec;
4732 else if (out_vec < in_vec)
4734 /* xgettext:c-format */
4735 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4737 else if (out_vec > in_vec)
4739 /* xgettext:c-format */
4740 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4744 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4745 and merge non-conflicting ones. */
4746 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4747 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4748 if (in_attr->i != out_attr->i)
4750 int in_struct = in_attr->i & 3;
4751 int out_struct = out_attr->i & 3;
4753 if (in_struct == 0 || in_struct == 3)
4755 else if (out_struct == 0)
4758 out_attr->i = in_struct;
4760 else if (out_struct < in_struct)
4762 /* xgettext:c-format */
4763 (_("warning: %pB uses r3/r4 for small structure returns, "
4764 "%pB uses memory"), obfd, ibfd);
4765 else if (out_struct > in_struct)
4767 /* xgettext:c-format */
4768 (_("warning: %pB uses r3/r4 for small structure returns, "
4769 "%pB uses memory"), ibfd, obfd);
4772 /* Merge Tag_compatibility attributes and any common GNU ones. */
4773 _bfd_elf_merge_object_attributes (ibfd, info);
4778 /* Merge backend specific data from an object file to the output
4779 object file when linking. */
4782 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4784 bfd *obfd = info->output_bfd;
4789 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4792 /* Check if we have the same endianness. */
4793 if (! _bfd_generic_verify_endian_match (ibfd, info))
4796 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4799 new_flags = elf_elfheader (ibfd)->e_flags;
4800 old_flags = elf_elfheader (obfd)->e_flags;
4801 if (!elf_flags_init (obfd))
4803 /* First call, no flags set. */
4804 elf_flags_init (obfd) = TRUE;
4805 elf_elfheader (obfd)->e_flags = new_flags;
4808 /* Compatible flags are ok. */
4809 else if (new_flags == old_flags)
4812 /* Incompatible flags. */
4815 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4816 to be linked with either. */
4818 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4819 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4823 (_("%pB: compiled with -mrelocatable and linked with "
4824 "modules compiled normally"), ibfd);
4826 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4827 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4831 (_("%pB: compiled normally and linked with "
4832 "modules compiled with -mrelocatable"), ibfd);
4835 /* The output is -mrelocatable-lib iff both the input files are. */
4836 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4837 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4839 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4840 but each input file is either -mrelocatable or -mrelocatable-lib. */
4841 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4842 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4843 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4844 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4846 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4847 any module uses it. */
4848 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4850 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4851 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4853 /* Warn about any other mismatches. */
4854 if (new_flags != old_flags)
4858 /* xgettext:c-format */
4859 (_("%pB: uses different e_flags (%#x) fields "
4860 "than previous modules (%#x)"),
4861 ibfd, new_flags, old_flags);
4866 bfd_set_error (bfd_error_bad_value);
4875 ppc_elf_vle_split16 (bfd *input_bfd,
4876 asection *input_section,
4877 unsigned long offset,
4880 split16_format_type split16_format,
4883 unsigned int insn, opcode, top5;
4885 insn = bfd_get_32 (input_bfd, loc);
4886 opcode = insn & 0xfc00f800;
4887 if (opcode == E_OR2I_INSN
4888 || opcode == E_AND2I_DOT_INSN
4889 || opcode == E_OR2IS_INSN
4890 || opcode == E_LIS_INSN
4891 || opcode == E_AND2IS_DOT_INSN)
4893 if (split16_format != split16a_type)
4896 split16_format = split16a_type;
4899 /* xgettext:c-format */
4900 (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
4901 input_bfd, input_section, offset, opcode);
4904 else if (opcode == E_ADD2I_DOT_INSN
4905 || opcode == E_ADD2IS_INSN
4906 || opcode == E_CMP16I_INSN
4907 || opcode == E_MULL2I_INSN
4908 || opcode == E_CMPL16I_INSN
4909 || opcode == E_CMPH16I_INSN
4910 || opcode == E_CMPHL16I_INSN)
4912 if (split16_format != split16d_type)
4915 split16_format = split16d_type;
4918 /* xgettext:c-format */
4919 (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
4920 input_bfd, input_section, offset, opcode);
4923 top5 = value & 0xf800;
4924 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4925 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4927 insn |= value & 0x7ff;
4928 bfd_put_32 (input_bfd, insn, loc);
4932 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
4936 insn = bfd_get_32 (output_bfd, loc);
4937 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4938 /* Top 4 bits of value to 17..20. */
4939 insn |= (value & 0xf0000) >> 5;
4940 /* Next 5 bits of the value to 11..15. */
4941 insn |= (value & 0xf800) << 5;
4942 /* And the final 11 bits of the value to bits 21 to 31. */
4943 insn |= value & 0x7ff;
4944 bfd_put_32 (output_bfd, insn, loc);
4948 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4949 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4951 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4952 struct bfd_link_info *info)
4954 struct ppc_elf_link_hash_table *htab;
4957 htab = ppc_elf_hash_table (info);
4959 if (htab->plt_type == PLT_UNSET)
4961 struct elf_link_hash_entry *h;
4963 if (htab->params->plt_style == PLT_OLD)
4964 htab->plt_type = PLT_OLD;
4965 else if (bfd_link_pic (info)
4966 && htab->elf.dynamic_sections_created
4967 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4968 FALSE, FALSE, TRUE)) != NULL
4969 && (h->type == STT_FUNC
4972 && !(SYMBOL_CALLS_LOCAL (info, h)
4973 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
4975 /* Profiling of shared libs (and pies) is not supported with
4976 secure plt, because ppc32 does profiling before a
4977 function prologue and a secure plt pic call stubs needs
4978 r30 to be set up. */
4979 htab->plt_type = PLT_OLD;
4984 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4986 /* Look through the reloc flags left by ppc_elf_check_relocs.
4987 Use the old style bss plt if a file makes plt calls
4988 without using the new relocs, and if ld isn't given
4989 --secure-plt and we never see REL16 relocs. */
4990 if (plt_type == PLT_UNSET)
4992 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4993 if (is_ppc_elf (ibfd))
4995 if (ppc_elf_tdata (ibfd)->has_rel16)
4997 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5000 htab->old_bfd = ibfd;
5004 htab->plt_type = plt_type;
5007 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5009 if (htab->old_bfd != NULL)
5010 _bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd);
5012 _bfd_error_handler (_("bss-plt forced by profiling"));
5015 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5017 if (htab->plt_type == PLT_NEW)
5019 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5020 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5022 /* The new PLT is a loaded section. */
5023 if (htab->elf.splt != NULL
5024 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5027 /* The new GOT is not executable. */
5028 if (htab->elf.sgot != NULL
5029 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5034 /* Stop an unused .glink section from affecting .text alignment. */
5035 if (htab->glink != NULL
5036 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5039 return htab->plt_type == PLT_NEW;
5042 /* Return the section that should be marked against GC for a given
5046 ppc_elf_gc_mark_hook (asection *sec,
5047 struct bfd_link_info *info,
5048 Elf_Internal_Rela *rel,
5049 struct elf_link_hash_entry *h,
5050 Elf_Internal_Sym *sym)
5053 switch (ELF32_R_TYPE (rel->r_info))
5055 case R_PPC_GNU_VTINHERIT:
5056 case R_PPC_GNU_VTENTRY:
5060 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5063 /* Set plt output section type, htab->tls_get_addr, and call the
5064 generic ELF tls_setup function. */
5067 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5069 struct ppc_elf_link_hash_table *htab;
5071 htab = ppc_elf_hash_table (info);
5072 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5073 FALSE, FALSE, TRUE);
5074 if (htab->plt_type != PLT_NEW)
5075 htab->params->no_tls_get_addr_opt = TRUE;
5077 if (!htab->params->no_tls_get_addr_opt)
5079 struct elf_link_hash_entry *opt, *tga;
5080 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5081 FALSE, FALSE, TRUE);
5083 && (opt->root.type == bfd_link_hash_defined
5084 || opt->root.type == bfd_link_hash_defweak))
5086 /* If glibc supports an optimized __tls_get_addr call stub,
5087 signalled by the presence of __tls_get_addr_opt, and we'll
5088 be calling __tls_get_addr via a plt call stub, then
5089 make __tls_get_addr point to __tls_get_addr_opt. */
5090 tga = htab->tls_get_addr;
5091 if (htab->elf.dynamic_sections_created
5093 && (tga->type == STT_FUNC
5095 && !(SYMBOL_CALLS_LOCAL (info, tga)
5096 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5098 struct plt_entry *ent;
5099 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5100 if (ent->plt.refcount > 0)
5104 tga->root.type = bfd_link_hash_indirect;
5105 tga->root.u.i.link = &opt->root;
5106 ppc_elf_copy_indirect_symbol (info, opt, tga);
5108 if (opt->dynindx != -1)
5110 /* Use __tls_get_addr_opt in dynamic relocations. */
5112 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5114 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5117 htab->tls_get_addr = opt;
5122 htab->params->no_tls_get_addr_opt = TRUE;
5124 if (htab->plt_type == PLT_NEW
5125 && htab->elf.splt != NULL
5126 && htab->elf.splt->output_section != NULL)
5128 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5129 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5132 return _bfd_elf_tls_setup (obfd, info);
5135 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5139 branch_reloc_hash_match (const bfd *ibfd,
5140 const Elf_Internal_Rela *rel,
5141 const struct elf_link_hash_entry *hash)
5143 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5144 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5145 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5147 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5149 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5150 struct elf_link_hash_entry *h;
5152 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5153 while (h->root.type == bfd_link_hash_indirect
5154 || h->root.type == bfd_link_hash_warning)
5155 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5162 /* Run through all the TLS relocs looking for optimization
5166 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5167 struct bfd_link_info *info)
5171 struct ppc_elf_link_hash_table *htab;
5174 if (!bfd_link_executable (info))
5177 htab = ppc_elf_hash_table (info);
5181 /* Make two passes through the relocs. First time check that tls
5182 relocs involved in setting up a tls_get_addr call are indeed
5183 followed by such a call. If they are not, don't do any tls
5184 optimization. On the second pass twiddle tls_mask flags to
5185 notify relocate_section that optimization can be done, and
5186 adjust got and plt refcounts. */
5187 for (pass = 0; pass < 2; ++pass)
5188 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5190 Elf_Internal_Sym *locsyms = NULL;
5191 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5192 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5194 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5195 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5197 Elf_Internal_Rela *relstart, *rel, *relend;
5198 int expecting_tls_get_addr = 0;
5200 /* Read the relocations. */
5201 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5203 if (relstart == NULL)
5206 relend = relstart + sec->reloc_count;
5207 for (rel = relstart; rel < relend; rel++)
5209 enum elf_ppc_reloc_type r_type;
5210 unsigned long r_symndx;
5211 struct elf_link_hash_entry *h = NULL;
5213 char tls_set, tls_clear;
5214 bfd_boolean is_local;
5215 bfd_signed_vma *got_count;
5217 r_symndx = ELF32_R_SYM (rel->r_info);
5218 if (r_symndx >= symtab_hdr->sh_info)
5220 struct elf_link_hash_entry **sym_hashes;
5222 sym_hashes = elf_sym_hashes (ibfd);
5223 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5224 while (h->root.type == bfd_link_hash_indirect
5225 || h->root.type == bfd_link_hash_warning)
5226 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5234 r_type = ELF32_R_TYPE (rel->r_info);
5235 /* If this section has old-style __tls_get_addr calls
5236 without marker relocs, then check that each
5237 __tls_get_addr call reloc is preceded by a reloc
5238 that conceivably belongs to the __tls_get_addr arg
5239 setup insn. If we don't find matching arg setup
5240 relocs, don't do any tls optimization. */
5242 && sec->has_tls_get_addr_call
5244 && h == htab->tls_get_addr
5245 && !expecting_tls_get_addr
5246 && is_branch_reloc (r_type))
5248 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5249 "TLS optimization disabled\n",
5250 ibfd, sec, rel->r_offset);
5251 if (elf_section_data (sec)->relocs != relstart)
5256 expecting_tls_get_addr = 0;
5259 case R_PPC_GOT_TLSLD16:
5260 case R_PPC_GOT_TLSLD16_LO:
5261 expecting_tls_get_addr = 1;
5264 case R_PPC_GOT_TLSLD16_HI:
5265 case R_PPC_GOT_TLSLD16_HA:
5266 /* These relocs should never be against a symbol
5267 defined in a shared lib. Leave them alone if
5268 that turns out to be the case. */
5277 case R_PPC_GOT_TLSGD16:
5278 case R_PPC_GOT_TLSGD16_LO:
5279 expecting_tls_get_addr = 1;
5282 case R_PPC_GOT_TLSGD16_HI:
5283 case R_PPC_GOT_TLSGD16_HA:
5289 tls_set = TLS_TLS | TLS_TPRELGD;
5293 case R_PPC_GOT_TPREL16:
5294 case R_PPC_GOT_TPREL16_LO:
5295 case R_PPC_GOT_TPREL16_HI:
5296 case R_PPC_GOT_TPREL16_HA:
5301 tls_clear = TLS_TPREL;
5309 expecting_tls_get_addr = 2;
5320 if (!expecting_tls_get_addr
5321 || (expecting_tls_get_addr == 1
5322 && !sec->has_tls_get_addr_call))
5325 if (rel + 1 < relend
5326 && branch_reloc_hash_match (ibfd, rel + 1,
5327 htab->tls_get_addr))
5330 /* Uh oh, we didn't find the expected call. We
5331 could just mark this symbol to exclude it
5332 from tls optimization but it's safer to skip
5333 the entire optimization. */
5334 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5335 "TLS optimization disabled\n"),
5336 ibfd, sec, rel->r_offset);
5337 if (elf_section_data (sec)->relocs != relstart)
5342 if (expecting_tls_get_addr)
5344 struct plt_entry *ent;
5347 if (bfd_link_pic (info)
5348 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5349 addend = rel[1].r_addend;
5350 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5352 if (ent != NULL && ent->plt.refcount > 0)
5353 ent->plt.refcount -= 1;
5355 if (expecting_tls_get_addr == 2)
5361 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5362 got_count = &h->got.refcount;
5366 bfd_signed_vma *lgot_refs;
5367 struct plt_entry **local_plt;
5370 if (locsyms == NULL)
5372 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5373 if (locsyms == NULL)
5374 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5375 symtab_hdr->sh_info,
5376 0, NULL, NULL, NULL);
5377 if (locsyms == NULL)
5379 if (elf_section_data (sec)->relocs != relstart)
5384 lgot_refs = elf_local_got_refcounts (ibfd);
5385 if (lgot_refs == NULL)
5387 local_plt = (struct plt_entry **)
5388 (lgot_refs + symtab_hdr->sh_info);
5389 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5390 tls_mask = &lgot_masks[r_symndx];
5391 got_count = &lgot_refs[r_symndx];
5396 /* We managed to get rid of a got entry. */
5401 *tls_mask |= tls_set;
5402 *tls_mask &= ~tls_clear;
5405 if (elf_section_data (sec)->relocs != relstart)
5410 && (symtab_hdr->contents != (unsigned char *) locsyms))
5412 if (!info->keep_memory)
5415 symtab_hdr->contents = (unsigned char *) locsyms;
5418 htab->do_tls_opt = 1;
5422 /* Find dynamic relocs for H that apply to read-only sections. */
5425 readonly_dynrelocs (struct elf_link_hash_entry *h)
5427 struct elf_dyn_relocs *p;
5429 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5431 asection *s = p->sec->output_section;
5433 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5439 /* Return true if we have dynamic relocs against H or any of its weak
5440 aliases, that apply to read-only sections. Cannot be used after
5441 size_dynamic_sections. */
5444 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
5446 struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
5449 if (readonly_dynrelocs (&eh->elf))
5451 eh = ppc_elf_hash_entry (eh->elf.u.alias);
5452 } while (eh != NULL && &eh->elf != h);
5457 /* Return whether H has pc-relative dynamic relocs. */
5460 pc_dynrelocs (struct elf_link_hash_entry *h)
5462 struct elf_dyn_relocs *p;
5464 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5465 if (p->pc_count != 0)
5470 /* Adjust a symbol defined by a dynamic object and referenced by a
5471 regular object. The current definition is in some section of the
5472 dynamic object, but we're not including those sections. We have to
5473 change the definition to something the rest of the link can
5477 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5478 struct elf_link_hash_entry *h)
5480 struct ppc_elf_link_hash_table *htab;
5484 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5485 h->root.root.string);
5488 /* Make sure we know what is going on here. */
5489 htab = ppc_elf_hash_table (info);
5490 BFD_ASSERT (htab->elf.dynobj != NULL
5492 || h->type == STT_GNU_IFUNC
5496 && !h->def_regular)));
5498 /* Deal with function syms. */
5499 if (h->type == STT_FUNC
5500 || h->type == STT_GNU_IFUNC
5503 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
5504 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5505 /* Discard dyn_relocs when non-pic if we've decided that a
5506 function symbol is local. */
5507 if (!bfd_link_pic (info) && local)
5508 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5510 /* Clear procedure linkage table information for any symbol that
5511 won't need a .plt entry. */
5512 struct plt_entry *ent;
5513 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5514 if (ent->plt.refcount > 0)
5517 || (h->type != STT_GNU_IFUNC && local))
5519 /* A PLT entry is not required/allowed when:
5521 1. We are not using ld.so; because then the PLT entry
5522 can't be set up, so we can't use one. In this case,
5523 ppc_elf_adjust_dynamic_symbol won't even be called.
5525 2. GC has rendered the entry unused.
5527 3. We know for certain that a call to this symbol
5528 will go to this object, or will remain undefined. */
5529 h->plt.plist = NULL;
5531 h->pointer_equality_needed = 0;
5535 /* Taking a function's address in a read/write section
5536 doesn't require us to define the function symbol in the
5537 executable on a plt call stub. A dynamic reloc can
5538 be used instead, giving better runtime performance.
5539 (Calls via that function pointer don't need to bounce
5540 through the plt call stub.) Similarly, use a dynamic
5541 reloc for a weak reference when possible, allowing the
5542 resolution of the symbol to be set at load time rather
5544 if ((h->pointer_equality_needed
5546 && !h->ref_regular_nonweak
5547 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5548 && !htab->is_vxworks
5549 && !ppc_elf_hash_entry (h)->has_sda_refs
5550 && !readonly_dynrelocs (h))
5552 h->pointer_equality_needed = 0;
5553 /* If we haven't seen a branch reloc then we don't need
5556 h->plt.plist = NULL;
5558 else if (!bfd_link_pic (info))
5559 /* We are going to be defining the function symbol on the
5560 plt stub, so no dyn_relocs needed when non-pic. */
5561 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5563 h->protected_def = 0;
5564 /* Function symbols can't have copy relocs. */
5568 h->plt.plist = NULL;
5570 /* If this is a weak symbol, and there is a real definition, the
5571 processor independent code will have arranged for us to see the
5572 real definition first, and we can just use the same value. */
5573 if (h->is_weakalias)
5575 struct elf_link_hash_entry *def = weakdef (h);
5576 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
5577 h->root.u.def.section = def->root.u.def.section;
5578 h->root.u.def.value = def->root.u.def.value;
5579 if (def->root.u.def.section == htab->elf.sdynbss
5580 || def->root.u.def.section == htab->elf.sdynrelro
5581 || def->root.u.def.section == htab->dynsbss)
5582 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5586 /* This is a reference to a symbol defined by a dynamic object which
5587 is not a function. */
5589 /* If we are creating a shared library, we must presume that the
5590 only references to the symbol are via the global offset table.
5591 For such cases we need not do anything here; the relocations will
5592 be handled correctly by relocate_section. */
5593 if (bfd_link_pic (info))
5595 h->protected_def = 0;
5599 /* If there are no references to this symbol that do not use the
5600 GOT, we don't need to generate a copy reloc. */
5601 if (!h->non_got_ref)
5603 h->protected_def = 0;
5607 /* Protected variables do not work with .dynbss. The copy in
5608 .dynbss won't be used by the shared library with the protected
5609 definition for the variable. Editing to PIC, or text relocations
5610 are preferable to an incorrect program. */
5611 if (h->protected_def)
5613 if (ELIMINATE_COPY_RELOCS
5614 && ppc_elf_hash_entry (h)->has_addr16_ha
5615 && ppc_elf_hash_entry (h)->has_addr16_lo
5616 && htab->params->pic_fixup == 0
5617 && info->disable_target_specific_optimizations <= 1)
5618 htab->params->pic_fixup = 1;
5622 /* If -z nocopyreloc was given, we won't generate them either. */
5623 if (info->nocopyreloc)
5626 /* If we don't find any dynamic relocs in read-only sections, then
5627 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5628 We can't do this if there are any small data relocations. This
5629 doesn't work on VxWorks, where we can not have dynamic
5630 relocations (other than copy and jump slot relocations) in an
5632 if (ELIMINATE_COPY_RELOCS
5633 && !ppc_elf_hash_entry (h)->has_sda_refs
5634 && !htab->is_vxworks
5636 && !alias_readonly_dynrelocs (h))
5639 /* We must allocate the symbol in our .dynbss section, which will
5640 become part of the .bss section of the executable. There will be
5641 an entry for this symbol in the .dynsym section. The dynamic
5642 object will contain position independent code, so all references
5643 from the dynamic object to this symbol will go through the global
5644 offset table. The dynamic linker will use the .dynsym entry to
5645 determine the address it must put in the global offset table, so
5646 both the dynamic object and the regular object will refer to the
5647 same memory location for the variable.
5649 Of course, if the symbol is referenced using SDAREL relocs, we
5650 must instead allocate it in .sbss. */
5651 if (ppc_elf_hash_entry (h)->has_sda_refs)
5653 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5654 s = htab->elf.sdynrelro;
5656 s = htab->elf.sdynbss;
5657 BFD_ASSERT (s != NULL);
5659 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5663 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5664 linker to copy the initial value out of the dynamic object
5665 and into the runtime process image. */
5666 if (ppc_elf_hash_entry (h)->has_sda_refs)
5667 srel = htab->relsbss;
5668 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5669 srel = htab->elf.sreldynrelro;
5671 srel = htab->elf.srelbss;
5672 BFD_ASSERT (srel != NULL);
5673 srel->size += sizeof (Elf32_External_Rela);
5677 /* We no longer want dyn_relocs. */
5678 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5679 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5682 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5683 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5684 specifying the addend on the plt relocation. For -fpic code, the sym
5685 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5686 xxxxxxxx.got2.plt_pic32.<callee>. */
5689 add_stub_sym (struct plt_entry *ent,
5690 struct elf_link_hash_entry *h,
5691 struct bfd_link_info *info)
5693 struct elf_link_hash_entry *sh;
5694 size_t len1, len2, len3;
5697 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5699 if (bfd_link_pic (info))
5700 stub = ".plt_pic32.";
5702 stub = ".plt_call32.";
5704 len1 = strlen (h->root.root.string);
5705 len2 = strlen (stub);
5708 len3 = strlen (ent->sec->name);
5709 name = bfd_malloc (len1 + len2 + len3 + 9);
5712 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5714 memcpy (name + 8, ent->sec->name, len3);
5715 memcpy (name + 8 + len3, stub, len2);
5716 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5717 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5720 if (sh->root.type == bfd_link_hash_new)
5722 sh->root.type = bfd_link_hash_defined;
5723 sh->root.u.def.section = htab->glink;
5724 sh->root.u.def.value = ent->glink_offset;
5725 sh->ref_regular = 1;
5726 sh->def_regular = 1;
5727 sh->ref_regular_nonweak = 1;
5728 sh->forced_local = 1;
5730 sh->root.linker_def = 1;
5735 /* Allocate NEED contiguous space in .got, and return the offset.
5736 Handles allocation of the got header when crossing 32k. */
5739 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5742 unsigned int max_before_header;
5744 if (htab->plt_type == PLT_VXWORKS)
5746 where = htab->elf.sgot->size;
5747 htab->elf.sgot->size += need;
5751 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5752 if (need <= htab->got_gap)
5754 where = max_before_header - htab->got_gap;
5755 htab->got_gap -= need;
5759 if (htab->elf.sgot->size + need > max_before_header
5760 && htab->elf.sgot->size <= max_before_header)
5762 htab->got_gap = max_before_header - htab->elf.sgot->size;
5763 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5765 where = htab->elf.sgot->size;
5766 htab->elf.sgot->size += need;
5772 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5773 TLS_LD is excluded because those go in a special GOT slot. */
5775 static inline unsigned int
5776 got_entries_needed (int tls_mask)
5779 if ((tls_mask & TLS_TLS) == 0)
5784 if ((tls_mask & TLS_GD) != 0)
5786 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5788 if ((tls_mask & TLS_DTPREL) != 0)
5794 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5795 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5798 static inline unsigned int
5799 got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
5801 /* All the entries we allocated need relocs.
5802 Except IE in executable with a local symbol. We could also omit
5803 the DTPREL reloc on the second word of a GD entry under the same
5804 condition as that for IE, but ld.so needs to differentiate
5805 LD and GD entries. */
5806 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0 && known)
5808 return need * sizeof (Elf32_External_Rela) / 4;
5811 /* If H is undefined, make it dynamic if that makes sense. */
5814 ensure_undef_dynamic (struct bfd_link_info *info,
5815 struct elf_link_hash_entry *h)
5817 struct elf_link_hash_table *htab = elf_hash_table (info);
5819 if (htab->dynamic_sections_created
5820 && ((info->dynamic_undefined_weak != 0
5821 && h->root.type == bfd_link_hash_undefweak)
5822 || h->root.type == bfd_link_hash_undefined)
5825 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5826 return bfd_elf_link_record_dynamic_symbol (info, h);
5830 /* Allocate space in associated reloc sections for dynamic relocs. */
5833 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5835 struct bfd_link_info *info = inf;
5836 struct ppc_elf_link_hash_entry *eh;
5837 struct ppc_elf_link_hash_table *htab;
5838 struct elf_dyn_relocs *p;
5841 if (h->root.type == bfd_link_hash_indirect)
5844 htab = ppc_elf_hash_table (info);
5845 eh = (struct ppc_elf_link_hash_entry *) h;
5846 if (eh->elf.got.refcount > 0
5847 || (ELIMINATE_COPY_RELOCS
5848 && !eh->elf.def_regular
5849 && eh->elf.protected_def
5850 && eh->has_addr16_ha
5851 && eh->has_addr16_lo
5852 && htab->params->pic_fixup > 0))
5856 /* Make sure this symbol is output as a dynamic symbol. */
5857 if (!ensure_undef_dynamic (info, &eh->elf))
5861 if ((eh->tls_mask & TLS_LD) != 0)
5863 if (!eh->elf.def_dynamic)
5864 /* We'll just use htab->tlsld_got.offset. This should
5865 always be the case. It's a little odd if we have
5866 a local dynamic reloc against a non-local symbol. */
5867 htab->tlsld_got.refcount += 1;
5871 need += got_entries_needed (eh->tls_mask);
5873 eh->elf.got.offset = (bfd_vma) -1;
5876 eh->elf.got.offset = allocate_got (htab, need);
5877 if ((bfd_link_pic (info)
5878 || (htab->elf.dynamic_sections_created
5879 && eh->elf.dynindx != -1
5880 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5881 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5884 bfd_boolean tprel_known = (bfd_link_executable (info)
5885 && SYMBOL_REFERENCES_LOCAL (info,
5888 need = got_relocs_needed (eh->tls_mask, need, tprel_known);
5889 if ((eh->tls_mask & TLS_LD) != 0 && eh->elf.def_dynamic)
5890 need -= sizeof (Elf32_External_Rela);
5891 rsec = htab->elf.srelgot;
5892 if (eh->elf.type == STT_GNU_IFUNC)
5893 rsec = htab->elf.irelplt;
5899 eh->elf.got.offset = (bfd_vma) -1;
5901 /* If no dynamic sections we can't have dynamic relocs, except for
5902 IFUNCs which are handled even in static executables. */
5903 if (!htab->elf.dynamic_sections_created
5904 && h->type != STT_GNU_IFUNC)
5905 eh->dyn_relocs = NULL;
5907 /* Discard relocs on undefined symbols that must be local. */
5908 else if (h->root.type == bfd_link_hash_undefined
5909 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5910 eh->dyn_relocs = NULL;
5912 /* Also discard relocs on undefined weak syms with non-default
5913 visibility, or when dynamic_undefined_weak says so. */
5914 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5915 eh->dyn_relocs = NULL;
5917 if (eh->dyn_relocs == NULL)
5920 /* In the shared -Bsymbolic case, discard space allocated for
5921 dynamic pc-relative relocs against symbols which turn out to be
5922 defined in regular objects. For the normal shared case, discard
5923 space for relocs that have become local due to symbol visibility
5925 else if (bfd_link_pic (info))
5927 /* Relocs that use pc_count are those that appear on a call insn,
5928 or certain REL relocs (see must_be_dyn_reloc) that can be
5929 generated via assembly. We want calls to protected symbols to
5930 resolve directly to the function rather than going via the plt.
5931 If people want function pointer comparisons to work as expected
5932 then they should avoid writing weird assembly. */
5933 if (SYMBOL_CALLS_LOCAL (info, h))
5935 struct elf_dyn_relocs **pp;
5937 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5939 p->count -= p->pc_count;
5948 if (htab->is_vxworks)
5950 struct elf_dyn_relocs **pp;
5952 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5954 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5961 if (eh->dyn_relocs != NULL)
5963 /* Make sure this symbol is output as a dynamic symbol. */
5964 if (!ensure_undef_dynamic (info, h))
5968 else if (ELIMINATE_COPY_RELOCS)
5970 /* For the non-pic case, discard space for relocs against
5971 symbols which turn out to need copy relocs or are not
5973 if (h->dynamic_adjusted
5975 && !ELF_COMMON_DEF_P (h)
5976 && !(h->protected_def
5977 && eh->has_addr16_ha
5978 && eh->has_addr16_lo
5979 && htab->params->pic_fixup > 0))
5981 /* Make sure this symbol is output as a dynamic symbol. */
5982 if (!ensure_undef_dynamic (info, h))
5985 if (h->dynindx == -1)
5986 eh->dyn_relocs = NULL;
5989 eh->dyn_relocs = NULL;
5992 /* Allocate space. */
5993 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5995 asection *sreloc = elf_section_data (p->sec)->sreloc;
5996 if (eh->elf.type == STT_GNU_IFUNC)
5997 sreloc = htab->elf.irelplt;
5998 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6001 /* Handle PLT relocs. Done last, after dynindx has settled. */
6002 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6003 if (dyn || h->type == STT_GNU_IFUNC)
6005 struct plt_entry *ent;
6006 bfd_boolean doneone = FALSE;
6007 bfd_vma plt_offset = 0, glink_offset = 0;
6009 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6010 if (ent->plt.refcount > 0)
6012 asection *s = htab->elf.splt;
6017 if (htab->plt_type == PLT_NEW || !dyn)
6021 plt_offset = s->size;
6024 ent->plt.offset = plt_offset;
6027 if (!doneone || bfd_link_pic (info))
6029 glink_offset = s->size;
6030 s->size += GLINK_ENTRY_SIZE (htab, h);
6033 && !bfd_link_pic (info)
6037 h->root.u.def.section = s;
6038 h->root.u.def.value = glink_offset;
6040 ent->glink_offset = glink_offset;
6042 if (htab->params->emit_stub_syms
6043 && !add_stub_sym (ent, h, info))
6050 /* If this is the first .plt entry, make room
6051 for the special first entry. */
6053 s->size += htab->plt_initial_entry_size;
6055 /* The PowerPC PLT is actually composed of two
6056 parts, the first part is 2 words (for a load
6057 and a jump), and then there is a remaining
6058 word available at the end. */
6059 plt_offset = (htab->plt_initial_entry_size
6060 + (htab->plt_slot_size
6062 - htab->plt_initial_entry_size)
6063 / htab->plt_entry_size)));
6065 /* If this symbol is not defined in a regular
6066 file, and we are not generating a shared
6067 library, then set the symbol to this location
6068 in the .plt. This is to avoid text
6069 relocations, and is required to make
6070 function pointers compare as equal between
6071 the normal executable and the shared library. */
6072 if (! bfd_link_pic (info)
6076 h->root.u.def.section = s;
6077 h->root.u.def.value = plt_offset;
6080 /* Make room for this entry. */
6081 s->size += htab->plt_entry_size;
6082 /* After the 8192nd entry, room for two entries
6084 if (htab->plt_type == PLT_OLD
6085 && (s->size - htab->plt_initial_entry_size)
6086 / htab->plt_entry_size
6087 > PLT_NUM_SINGLE_ENTRIES)
6088 s->size += htab->plt_entry_size;
6090 ent->plt.offset = plt_offset;
6093 /* We also need to make an entry in the .rela.plt section. */
6097 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6100 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6102 if (htab->plt_type == PLT_VXWORKS)
6104 /* Allocate space for the unloaded relocations. */
6105 if (!bfd_link_pic (info)
6106 && htab->elf.dynamic_sections_created)
6109 == (bfd_vma) htab->plt_initial_entry_size)
6111 htab->srelplt2->size
6112 += (sizeof (Elf32_External_Rela)
6113 * VXWORKS_PLTRESOLVE_RELOCS);
6116 htab->srelplt2->size
6117 += (sizeof (Elf32_External_Rela)
6118 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6121 /* Every PLT entry has an associated GOT entry in
6123 htab->elf.sgotplt->size += 4;
6130 ent->plt.offset = (bfd_vma) -1;
6134 h->plt.plist = NULL;
6140 h->plt.plist = NULL;
6147 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6148 read-only sections. */
6151 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
6155 if (h->root.type == bfd_link_hash_indirect)
6158 sec = readonly_dynrelocs (h);
6161 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
6163 info->flags |= DF_TEXTREL;
6164 info->callbacks->minfo
6165 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
6166 sec->owner, h->root.root.string, sec);
6168 /* Not an error, just cut short the traversal. */
6174 static const unsigned char glink_eh_frame_cie[] =
6176 0, 0, 0, 16, /* length. */
6177 0, 0, 0, 0, /* id. */
6178 1, /* CIE version. */
6179 'z', 'R', 0, /* Augmentation string. */
6180 4, /* Code alignment. */
6181 0x7c, /* Data alignment. */
6183 1, /* Augmentation size. */
6184 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6185 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6188 /* Set the sizes of the dynamic sections. */
6191 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6192 struct bfd_link_info *info)
6194 struct ppc_elf_link_hash_table *htab;
6200 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6203 htab = ppc_elf_hash_table (info);
6204 BFD_ASSERT (htab->elf.dynobj != NULL);
6206 if (elf_hash_table (info)->dynamic_sections_created)
6208 /* Set the contents of the .interp section to the interpreter. */
6209 if (bfd_link_executable (info) && !info->nointerp)
6211 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6212 BFD_ASSERT (s != NULL);
6213 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6214 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6218 if (htab->plt_type == PLT_OLD)
6219 htab->got_header_size = 16;
6220 else if (htab->plt_type == PLT_NEW)
6221 htab->got_header_size = 12;
6223 /* Set up .got offsets for local syms, and space for local dynamic
6225 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6227 bfd_signed_vma *local_got;
6228 bfd_signed_vma *end_local_got;
6229 struct plt_entry **local_plt;
6230 struct plt_entry **end_local_plt;
6232 bfd_size_type locsymcount;
6233 Elf_Internal_Shdr *symtab_hdr;
6235 if (!is_ppc_elf (ibfd))
6238 for (s = ibfd->sections; s != NULL; s = s->next)
6240 struct ppc_dyn_relocs *p;
6242 for (p = ((struct ppc_dyn_relocs *)
6243 elf_section_data (s)->local_dynrel);
6247 if (!bfd_is_abs_section (p->sec)
6248 && bfd_is_abs_section (p->sec->output_section))
6250 /* Input section has been discarded, either because
6251 it is a copy of a linkonce section or due to
6252 linker script /DISCARD/, so we'll be discarding
6255 else if (htab->is_vxworks
6256 && strcmp (p->sec->output_section->name,
6259 /* Relocations in vxworks .tls_vars sections are
6260 handled specially by the loader. */
6262 else if (p->count != 0)
6264 asection *sreloc = elf_section_data (p->sec)->sreloc;
6266 sreloc = htab->elf.irelplt;
6267 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6268 if ((p->sec->output_section->flags
6269 & (SEC_READONLY | SEC_ALLOC))
6270 == (SEC_READONLY | SEC_ALLOC))
6272 info->flags |= DF_TEXTREL;
6273 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
6274 p->sec->owner, p->sec);
6280 local_got = elf_local_got_refcounts (ibfd);
6284 symtab_hdr = &elf_symtab_hdr (ibfd);
6285 locsymcount = symtab_hdr->sh_info;
6286 end_local_got = local_got + locsymcount;
6287 local_plt = (struct plt_entry **) end_local_got;
6288 end_local_plt = local_plt + locsymcount;
6289 lgot_masks = (char *) end_local_plt;
6291 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6295 if ((*lgot_masks & TLS_LD) != 0)
6296 htab->tlsld_got.refcount += 1;
6297 need = got_entries_needed (*lgot_masks);
6299 *local_got = (bfd_vma) -1;
6302 *local_got = allocate_got (htab, need);
6303 if (bfd_link_pic (info))
6306 bfd_boolean tprel_known = bfd_link_executable (info);
6308 need = got_relocs_needed (*lgot_masks, need, tprel_known);
6309 srel = htab->elf.srelgot;
6310 if ((*lgot_masks & PLT_IFUNC) != 0)
6311 srel = htab->elf.irelplt;
6317 *local_got = (bfd_vma) -1;
6319 if (htab->is_vxworks)
6322 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6323 for (; local_plt < end_local_plt; ++local_plt)
6325 struct plt_entry *ent;
6326 bfd_boolean doneone = FALSE;
6327 bfd_vma plt_offset = 0, glink_offset = 0;
6329 for (ent = *local_plt; ent != NULL; ent = ent->next)
6330 if (ent->plt.refcount > 0)
6336 plt_offset = s->size;
6339 ent->plt.offset = plt_offset;
6342 if (!doneone || bfd_link_pic (info))
6344 glink_offset = s->size;
6345 s->size += GLINK_ENTRY_SIZE (htab, NULL);
6347 ent->glink_offset = glink_offset;
6351 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6356 ent->plt.offset = (bfd_vma) -1;
6360 /* Allocate space for global sym dynamic relocs. */
6361 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6363 if (htab->tlsld_got.refcount > 0)
6365 htab->tlsld_got.offset = allocate_got (htab, 8);
6366 if (bfd_link_pic (info))
6367 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6370 htab->tlsld_got.offset = (bfd_vma) -1;
6372 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6374 unsigned int g_o_t = 32768;
6376 /* If we haven't allocated the header, do so now. When we get here,
6377 for old plt/got the got size will be 0 to 32764 (not allocated),
6378 or 32780 to 65536 (header allocated). For new plt/got, the
6379 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6380 if (htab->elf.sgot->size <= 32768)
6382 g_o_t = htab->elf.sgot->size;
6383 if (htab->plt_type == PLT_OLD)
6385 htab->elf.sgot->size += htab->got_header_size;
6388 htab->elf.hgot->root.u.def.value = g_o_t;
6390 if (bfd_link_pic (info))
6392 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6394 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6395 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6397 if (info->emitrelocations)
6399 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6401 if (sda != NULL && sda->ref_regular)
6402 sda->root.u.def.section->flags |= SEC_KEEP;
6403 sda = htab->sdata[1].sym;
6404 if (sda != NULL && sda->ref_regular)
6405 sda->root.u.def.section->flags |= SEC_KEEP;
6408 if (htab->glink != NULL
6409 && htab->glink->size != 0
6410 && htab->elf.dynamic_sections_created)
6412 htab->glink_pltresolve = htab->glink->size;
6413 /* Space for the branch table. */
6415 += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
6416 /* Pad out to align the start of PLTresolve. */
6417 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6419 htab->glink->size += GLINK_PLTRESOLVE;
6421 if (htab->params->emit_stub_syms)
6423 struct elf_link_hash_entry *sh;
6424 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6425 TRUE, FALSE, FALSE);
6428 if (sh->root.type == bfd_link_hash_new)
6430 sh->root.type = bfd_link_hash_defined;
6431 sh->root.u.def.section = htab->glink;
6432 sh->root.u.def.value = htab->glink_pltresolve;
6433 sh->ref_regular = 1;
6434 sh->def_regular = 1;
6435 sh->ref_regular_nonweak = 1;
6436 sh->forced_local = 1;
6438 sh->root.linker_def = 1;
6440 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6441 TRUE, FALSE, FALSE);
6444 if (sh->root.type == bfd_link_hash_new)
6446 sh->root.type = bfd_link_hash_defined;
6447 sh->root.u.def.section = htab->glink;
6448 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6449 sh->ref_regular = 1;
6450 sh->def_regular = 1;
6451 sh->ref_regular_nonweak = 1;
6452 sh->forced_local = 1;
6454 sh->root.linker_def = 1;
6459 if (htab->glink != NULL
6460 && htab->glink->size != 0
6461 && htab->glink_eh_frame != NULL
6462 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6463 && _bfd_elf_eh_frame_present (info))
6465 s = htab->glink_eh_frame;
6466 s->size = sizeof (glink_eh_frame_cie) + 20;
6467 if (bfd_link_pic (info))
6470 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6475 /* We've now determined the sizes of the various dynamic sections.
6476 Allocate memory for them. */
6478 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6480 bfd_boolean strip_section = TRUE;
6482 if ((s->flags & SEC_LINKER_CREATED) == 0)
6485 if (s == htab->elf.splt
6486 || s == htab->elf.sgot)
6488 /* We'd like to strip these sections if they aren't needed, but if
6489 we've exported dynamic symbols from them we must leave them.
6490 It's too late to tell BFD to get rid of the symbols. */
6491 if (htab->elf.hplt != NULL)
6492 strip_section = FALSE;
6493 /* Strip this section if we don't need it; see the
6496 else if (s == htab->elf.iplt
6498 || s == htab->glink_eh_frame
6499 || s == htab->elf.sgotplt
6501 || s == htab->elf.sdynbss
6502 || s == htab->elf.sdynrelro
6503 || s == htab->dynsbss)
6505 /* Strip these too. */
6507 else if (s == htab->sdata[0].section
6508 || s == htab->sdata[1].section)
6510 strip_section = (s->flags & SEC_KEEP) == 0;
6512 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6517 /* Remember whether there are any relocation sections. */
6520 /* We use the reloc_count field as a counter if we need
6521 to copy relocs into the output file. */
6527 /* It's not one of our sections, so don't allocate space. */
6531 if (s->size == 0 && strip_section)
6533 /* If we don't need this section, strip it from the
6534 output file. This is mostly to handle .rela.bss and
6535 .rela.plt. We must create both sections in
6536 create_dynamic_sections, because they must be created
6537 before the linker maps input sections to output
6538 sections. The linker does that before
6539 adjust_dynamic_symbol is called, and it is that
6540 function which decides whether anything needs to go
6541 into these sections. */
6542 s->flags |= SEC_EXCLUDE;
6546 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6549 /* Allocate memory for the section contents. */
6550 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6551 if (s->contents == NULL)
6555 if (htab->elf.dynamic_sections_created)
6557 /* Add some entries to the .dynamic section. We fill in the
6558 values later, in ppc_elf_finish_dynamic_sections, but we
6559 must add the entries now so that we get the correct size for
6560 the .dynamic section. The DT_DEBUG entry is filled in by the
6561 dynamic linker and used by the debugger. */
6562 #define add_dynamic_entry(TAG, VAL) \
6563 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6565 if (bfd_link_executable (info))
6567 if (!add_dynamic_entry (DT_DEBUG, 0))
6571 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6573 if (!add_dynamic_entry (DT_PLTGOT, 0)
6574 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6575 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6576 || !add_dynamic_entry (DT_JMPREL, 0))
6580 if (htab->plt_type == PLT_NEW
6581 && htab->glink != NULL
6582 && htab->glink->size != 0)
6584 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6586 if (!htab->params->no_tls_get_addr_opt
6587 && htab->tls_get_addr != NULL
6588 && htab->tls_get_addr->plt.plist != NULL
6589 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6595 if (!add_dynamic_entry (DT_RELA, 0)
6596 || !add_dynamic_entry (DT_RELASZ, 0)
6597 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6601 /* If any dynamic relocs apply to a read-only section, then we
6602 need a DT_TEXTREL entry. */
6603 if ((info->flags & DF_TEXTREL) == 0)
6604 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6607 if ((info->flags & DF_TEXTREL) != 0)
6609 if (!add_dynamic_entry (DT_TEXTREL, 0))
6612 if (htab->is_vxworks
6613 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6616 #undef add_dynamic_entry
6618 if (htab->glink_eh_frame != NULL
6619 && htab->glink_eh_frame->contents != NULL)
6621 unsigned char *p = htab->glink_eh_frame->contents;
6624 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6625 /* CIE length (rewrite in case little-endian). */
6626 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6627 p += sizeof (glink_eh_frame_cie);
6629 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6630 bfd_put_32 (htab->elf.dynobj, val, p);
6633 val = p - htab->glink_eh_frame->contents;
6634 bfd_put_32 (htab->elf.dynobj, val, p);
6636 /* Offset to .glink. Set later. */
6639 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6644 if (bfd_link_pic (info)
6645 && htab->elf.dynamic_sections_created)
6647 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6649 *p++ = DW_CFA_advance_loc + adv;
6652 *p++ = DW_CFA_advance_loc1;
6655 else if (adv < 65536)
6657 *p++ = DW_CFA_advance_loc2;
6658 bfd_put_16 (htab->elf.dynobj, adv, p);
6663 *p++ = DW_CFA_advance_loc4;
6664 bfd_put_32 (htab->elf.dynobj, adv, p);
6667 *p++ = DW_CFA_register;
6670 *p++ = DW_CFA_advance_loc + 4;
6671 *p++ = DW_CFA_restore_extended;
6674 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6675 == htab->glink_eh_frame->size);
6681 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6682 if it looks like nothing is using them. */
6685 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6687 struct elf_link_hash_entry *sda = lsect->sym;
6689 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6693 s = bfd_get_section_by_name (output_bfd, lsect->name);
6694 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6696 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6697 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6699 sda->def_regular = 0;
6700 /* This is somewhat magic. See elf_link_output_extsym. */
6701 sda->ref_dynamic = 1;
6702 sda->forced_local = 0;
6709 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6711 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6715 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6716 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6721 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6724 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6726 if (h->plt.plist != NULL
6728 && (!h->pointer_equality_needed
6729 || !h->ref_regular_nonweak))
6732 return _bfd_elf_hash_symbol (h);
6735 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6737 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6738 used for some functions that are allowed to break the ABI). */
6739 static const int shared_stub_entry[] =
6741 0x7c0802a6, /* mflr 0 */
6742 0x429f0005, /* bcl 20, 31, .Lxxx */
6743 0x7d8802a6, /* mflr 12 */
6744 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6745 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6746 0x7c0803a6, /* mtlr 0 */
6747 0x7d8903a6, /* mtctr 12 */
6748 0x4e800420, /* bctr */
6751 static const int stub_entry[] =
6753 0x3d800000, /* lis 12,xxx@ha */
6754 0x398c0000, /* addi 12,12,xxx@l */
6755 0x7d8903a6, /* mtctr 12 */
6756 0x4e800420, /* bctr */
6759 struct ppc_elf_relax_info
6761 unsigned int workaround_size;
6762 unsigned int picfixup_size;
6765 /* This function implements long branch trampolines, and the ppc476
6766 icache bug workaround. Any section needing trampolines or patch
6767 space for the workaround has its size extended so that we can
6768 add trampolines at the end of the section. */
6771 ppc_elf_relax_section (bfd *abfd,
6773 struct bfd_link_info *link_info,
6776 struct one_branch_fixup
6778 struct one_branch_fixup *next;
6780 /* Final link, can use the symbol offset. For a
6781 relocatable link we use the symbol's index. */
6786 Elf_Internal_Shdr *symtab_hdr;
6787 bfd_byte *contents = NULL;
6788 Elf_Internal_Sym *isymbuf = NULL;
6789 Elf_Internal_Rela *internal_relocs = NULL;
6790 Elf_Internal_Rela *irel, *irelend = NULL;
6791 struct one_branch_fixup *branch_fixups = NULL;
6792 struct ppc_elf_relax_info *relax_info = NULL;
6793 unsigned changes = 0;
6794 bfd_boolean workaround_change;
6795 struct ppc_elf_link_hash_table *htab;
6796 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6798 bfd_boolean maybe_pasted;
6802 /* No need to do anything with non-alloc or non-code sections. */
6803 if ((isec->flags & SEC_ALLOC) == 0
6804 || (isec->flags & SEC_CODE) == 0
6805 || (isec->flags & SEC_LINKER_CREATED) != 0
6809 /* We cannot represent the required PIC relocs in the output, so don't
6810 do anything. The linker doesn't support mixing -shared and -r
6812 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6815 htab = ppc_elf_hash_table (link_info);
6819 isec->size = (isec->size + 3) & -4;
6820 if (isec->rawsize == 0)
6821 isec->rawsize = isec->size;
6822 trampbase = isec->size;
6824 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6825 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6826 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6828 if (htab->params->ppc476_workaround
6829 || htab->params->pic_fixup > 0)
6831 if (elf_section_data (isec)->sec_info == NULL)
6833 elf_section_data (isec)->sec_info
6834 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6835 if (elf_section_data (isec)->sec_info == NULL)
6838 relax_info = elf_section_data (isec)->sec_info;
6839 trampbase -= relax_info->workaround_size;
6842 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6843 || strcmp (isec->output_section->name, ".fini") == 0);
6844 /* Space for a branch around any trampolines. */
6845 trampoff = trampbase;
6846 if (maybe_pasted && trampbase == isec->rawsize)
6849 symtab_hdr = &elf_symtab_hdr (abfd);
6851 if (htab->params->branch_trampolines
6852 || htab->params->pic_fixup > 0)
6854 /* Get a copy of the native relocations. */
6855 if (isec->reloc_count != 0)
6857 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6858 link_info->keep_memory);
6859 if (internal_relocs == NULL)
6863 got2 = bfd_get_section_by_name (abfd, ".got2");
6865 irelend = internal_relocs + isec->reloc_count;
6866 for (irel = internal_relocs; irel < irelend; irel++)
6868 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6871 struct one_branch_fixup *f;
6872 size_t insn_offset = 0;
6873 bfd_vma max_branch_offset = 0, val;
6876 struct elf_link_hash_entry *h;
6877 struct plt_entry **plist;
6878 unsigned char sym_type;
6883 case R_PPC_LOCAL24PC:
6884 case R_PPC_PLTREL24:
6885 max_branch_offset = 1 << 25;
6889 case R_PPC_REL14_BRTAKEN:
6890 case R_PPC_REL14_BRNTAKEN:
6891 max_branch_offset = 1 << 15;
6894 case R_PPC_ADDR16_HA:
6895 if (htab->params->pic_fixup > 0)
6903 /* Get the value of the symbol referred to by the reloc. */
6905 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6907 /* A local symbol. */
6908 Elf_Internal_Sym *isym;
6910 /* Read this BFD's local symbols. */
6911 if (isymbuf == NULL)
6913 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6914 if (isymbuf == NULL)
6915 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6916 symtab_hdr->sh_info, 0,
6921 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6922 if (isym->st_shndx == SHN_UNDEF)
6923 tsec = bfd_und_section_ptr;
6924 else if (isym->st_shndx == SHN_ABS)
6925 tsec = bfd_abs_section_ptr;
6926 else if (isym->st_shndx == SHN_COMMON)
6927 tsec = bfd_com_section_ptr;
6929 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6931 toff = isym->st_value;
6932 sym_type = ELF_ST_TYPE (isym->st_info);
6936 /* Global symbol handling. */
6939 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6940 h = elf_sym_hashes (abfd)[indx];
6942 while (h->root.type == bfd_link_hash_indirect
6943 || h->root.type == bfd_link_hash_warning)
6944 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6946 if (h->root.type == bfd_link_hash_defined
6947 || h->root.type == bfd_link_hash_defweak)
6949 tsec = h->root.u.def.section;
6950 toff = h->root.u.def.value;
6952 else if (h->root.type == bfd_link_hash_undefined
6953 || h->root.type == bfd_link_hash_undefweak)
6955 tsec = bfd_und_section_ptr;
6956 toff = bfd_link_relocatable (link_info) ? indx : 0;
6961 /* If this branch is to __tls_get_addr then we may later
6962 optimise away the call. We won't be needing a long-
6963 branch stub in that case. */
6964 if (bfd_link_executable (link_info)
6965 && h == htab->tls_get_addr
6966 && irel != internal_relocs)
6968 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6969 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6970 unsigned int tls_mask = 0;
6972 /* The previous reloc should be one of R_PPC_TLSGD or
6973 R_PPC_TLSLD, or for older object files, a reloc
6974 on the __tls_get_addr arg setup insn. Get tls
6975 mask bits from the symbol on that reloc. */
6976 if (t_symndx < symtab_hdr->sh_info)
6978 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6980 if (local_got_offsets != NULL)
6982 struct plt_entry **local_plt = (struct plt_entry **)
6983 (local_got_offsets + symtab_hdr->sh_info);
6984 char *lgot_masks = (char *)
6985 (local_plt + symtab_hdr->sh_info);
6986 tls_mask = lgot_masks[t_symndx];
6991 struct elf_link_hash_entry *th
6992 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6994 while (th->root.type == bfd_link_hash_indirect
6995 || th->root.type == bfd_link_hash_warning)
6996 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6999 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7002 /* The mask bits tell us if the call will be
7004 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7005 && (t_rtype == R_PPC_TLSGD
7006 || t_rtype == R_PPC_GOT_TLSGD16
7007 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7009 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7010 && (t_rtype == R_PPC_TLSLD
7011 || t_rtype == R_PPC_GOT_TLSLD16
7012 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7019 if (r_type == R_PPC_ADDR16_HA)
7024 && ppc_elf_hash_entry (h)->has_addr16_ha
7025 && ppc_elf_hash_entry (h)->has_addr16_lo)
7026 picfixup_size += 12;
7030 /* The condition here under which we call find_plt_ent must
7031 match that in relocate_section. If we call find_plt_ent here
7032 but not in relocate_section, or vice versa, then the branch
7033 destination used here may be incorrect. */
7037 /* We know is_branch_reloc (r_type) is true. */
7038 if (h->type == STT_GNU_IFUNC
7039 || r_type == R_PPC_PLTREL24)
7040 plist = &h->plt.plist;
7042 else if (sym_type == STT_GNU_IFUNC
7043 && elf_local_got_offsets (abfd) != NULL)
7045 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7046 struct plt_entry **local_plt = (struct plt_entry **)
7047 (local_got_offsets + symtab_hdr->sh_info);
7048 plist = local_plt + ELF32_R_SYM (irel->r_info);
7053 struct plt_entry *ent;
7055 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7056 addend = irel->r_addend;
7057 ent = find_plt_ent (plist, got2, addend);
7060 if (htab->plt_type == PLT_NEW
7062 || !htab->elf.dynamic_sections_created
7063 || h->dynindx == -1)
7066 toff = ent->glink_offset;
7070 tsec = htab->elf.splt;
7071 toff = ent->plt.offset;
7076 /* If the branch and target are in the same section, you have
7077 no hope of adding stubs. We'll error out later should the
7082 /* There probably isn't any reason to handle symbols in
7083 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7084 attribute for a code section, and we are only looking at
7085 branches. However, implement it correctly here as a
7086 reference for other target relax_section functions. */
7087 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7089 /* At this stage in linking, no SEC_MERGE symbol has been
7090 adjusted, so all references to such symbols need to be
7091 passed through _bfd_merged_section_offset. (Later, in
7092 relocate_section, all SEC_MERGE symbols *except* for
7093 section symbols have been adjusted.)
7095 gas may reduce relocations against symbols in SEC_MERGE
7096 sections to a relocation against the section symbol when
7097 the original addend was zero. When the reloc is against
7098 a section symbol we should include the addend in the
7099 offset passed to _bfd_merged_section_offset, since the
7100 location of interest is the original symbol. On the
7101 other hand, an access to "sym+addend" where "sym" is not
7102 a section symbol should not include the addend; Such an
7103 access is presumed to be an offset from "sym"; The
7104 location of interest is just "sym". */
7105 if (sym_type == STT_SECTION)
7106 toff += irel->r_addend;
7109 = _bfd_merged_section_offset (abfd, &tsec,
7110 elf_section_data (tsec)->sec_info,
7113 if (sym_type != STT_SECTION)
7114 toff += irel->r_addend;
7116 /* PLTREL24 addends are special. */
7117 else if (r_type != R_PPC_PLTREL24)
7118 toff += irel->r_addend;
7120 /* Attempted -shared link of non-pic code loses. */
7121 if ((!bfd_link_relocatable (link_info)
7122 && tsec == bfd_und_section_ptr)
7123 || tsec->output_section == NULL
7124 || (tsec->owner != NULL
7125 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7128 roff = irel->r_offset;
7130 /* If the branch is in range, no need to do anything. */
7131 if (tsec != bfd_und_section_ptr
7132 && (!bfd_link_relocatable (link_info)
7133 /* A relocatable link may have sections moved during
7134 final link, so do not presume they remain in range. */
7135 || tsec->output_section == isec->output_section))
7137 bfd_vma symaddr, reladdr;
7139 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7140 reladdr = isec->output_section->vma + isec->output_offset + roff;
7141 if (symaddr - reladdr + max_branch_offset
7142 < 2 * max_branch_offset)
7146 /* Look for an existing fixup to this address. */
7147 for (f = branch_fixups; f ; f = f->next)
7148 if (f->tsec == tsec && f->toff == toff)
7154 unsigned long stub_rtype;
7156 val = trampoff - roff;
7157 if (val >= max_branch_offset)
7158 /* Oh dear, we can't reach a trampoline. Don't try to add
7159 one. We'll report an error later. */
7162 if (bfd_link_pic (link_info))
7164 size = 4 * ARRAY_SIZE (shared_stub_entry);
7169 size = 4 * ARRAY_SIZE (stub_entry);
7172 stub_rtype = R_PPC_RELAX;
7173 if (tsec == htab->elf.splt
7174 || tsec == htab->glink)
7176 stub_rtype = R_PPC_RELAX_PLT;
7177 if (r_type == R_PPC_PLTREL24)
7178 stub_rtype = R_PPC_RELAX_PLTREL24;
7181 /* Hijack the old relocation. Since we need two
7182 relocations for this use a "composite" reloc. */
7183 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7185 irel->r_offset = trampoff + insn_offset;
7186 if (r_type == R_PPC_PLTREL24
7187 && stub_rtype != R_PPC_RELAX_PLTREL24)
7190 /* Record the fixup so we don't do it again this section. */
7191 f = bfd_malloc (sizeof (*f));
7192 f->next = branch_fixups;
7195 f->trampoff = trampoff;
7203 val = f->trampoff - roff;
7204 if (val >= max_branch_offset)
7207 /* Nop out the reloc, since we're finalizing things here. */
7208 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7211 /* Get the section contents. */
7212 if (contents == NULL)
7214 /* Get cached copy if it exists. */
7215 if (elf_section_data (isec)->this_hdr.contents != NULL)
7216 contents = elf_section_data (isec)->this_hdr.contents;
7217 /* Go get them off disk. */
7218 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7222 /* Fix up the existing branch to hit the trampoline. */
7223 hit_addr = contents + roff;
7227 case R_PPC_LOCAL24PC:
7228 case R_PPC_PLTREL24:
7229 t0 = bfd_get_32 (abfd, hit_addr);
7231 t0 |= val & 0x3fffffc;
7232 bfd_put_32 (abfd, t0, hit_addr);
7236 case R_PPC_REL14_BRTAKEN:
7237 case R_PPC_REL14_BRNTAKEN:
7238 t0 = bfd_get_32 (abfd, hit_addr);
7241 bfd_put_32 (abfd, t0, hit_addr);
7246 while (branch_fixups != NULL)
7248 struct one_branch_fixup *f = branch_fixups;
7249 branch_fixups = branch_fixups->next;
7254 workaround_change = FALSE;
7256 if (htab->params->ppc476_workaround
7257 && (!bfd_link_relocatable (link_info)
7258 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7260 bfd_vma addr, end_addr;
7261 unsigned int crossings;
7262 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7264 addr = isec->output_section->vma + isec->output_offset;
7265 end_addr = addr + trampoff;
7267 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7270 /* Keep space aligned, to ensure the patch code itself does
7271 not cross a page. Don't decrease size calculated on a
7272 previous pass as otherwise we might never settle on a layout. */
7273 newsize = 15 - ((end_addr - 1) & 15);
7274 newsize += crossings * 16;
7275 if (relax_info->workaround_size < newsize)
7277 relax_info->workaround_size = newsize;
7278 workaround_change = TRUE;
7280 /* Ensure relocate_section is called. */
7281 isec->flags |= SEC_RELOC;
7283 newsize = trampoff + relax_info->workaround_size;
7286 if (htab->params->pic_fixup > 0)
7288 picfixup_size -= relax_info->picfixup_size;
7289 if (picfixup_size != 0)
7290 relax_info->picfixup_size += picfixup_size;
7291 newsize += relax_info->picfixup_size;
7294 if (changes != 0 || picfixup_size != 0 || workaround_change)
7295 isec->size = newsize;
7298 && symtab_hdr->contents != (unsigned char *) isymbuf)
7300 if (! link_info->keep_memory)
7304 /* Cache the symbols for elf_link_input_bfd. */
7305 symtab_hdr->contents = (unsigned char *) isymbuf;
7309 if (contents != NULL
7310 && elf_section_data (isec)->this_hdr.contents != contents)
7312 if (!changes && !link_info->keep_memory)
7316 /* Cache the section contents for elf_link_input_bfd. */
7317 elf_section_data (isec)->this_hdr.contents = contents;
7321 changes += picfixup_size;
7324 /* Append sufficient NOP relocs so we can write out relocation
7325 information for the trampolines. */
7326 Elf_Internal_Shdr *rel_hdr;
7327 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7328 * sizeof (*new_relocs));
7333 memcpy (new_relocs, internal_relocs,
7334 isec->reloc_count * sizeof (*new_relocs));
7335 for (ix = changes; ix--;)
7337 irel = new_relocs + ix + isec->reloc_count;
7339 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7341 if (internal_relocs != elf_section_data (isec)->relocs)
7342 free (internal_relocs);
7343 elf_section_data (isec)->relocs = new_relocs;
7344 isec->reloc_count += changes;
7345 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7346 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7348 else if (internal_relocs != NULL
7349 && elf_section_data (isec)->relocs != internal_relocs)
7350 free (internal_relocs);
7352 *again = changes != 0 || workaround_change;
7356 while (branch_fixups != NULL)
7358 struct one_branch_fixup *f = branch_fixups;
7359 branch_fixups = branch_fixups->next;
7362 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7364 if (contents != NULL
7365 && elf_section_data (isec)->this_hdr.contents != contents)
7367 if (internal_relocs != NULL
7368 && elf_section_data (isec)->relocs != internal_relocs)
7369 free (internal_relocs);
7373 /* What to do when ld finds relocations against symbols defined in
7374 discarded sections. */
7377 ppc_elf_action_discarded (asection *sec)
7379 if (strcmp (".fixup", sec->name) == 0)
7382 if (strcmp (".got2", sec->name) == 0)
7385 return _bfd_elf_default_action_discarded (sec);
7388 /* Fill in the address for a pointer generated in a linker section. */
7391 elf_finish_pointer_linker_section (bfd *input_bfd,
7392 elf_linker_section_t *lsect,
7393 struct elf_link_hash_entry *h,
7395 const Elf_Internal_Rela *rel)
7397 elf_linker_section_pointers_t *linker_section_ptr;
7399 BFD_ASSERT (lsect != NULL);
7403 /* Handle global symbol. */
7404 struct ppc_elf_link_hash_entry *eh;
7406 eh = (struct ppc_elf_link_hash_entry *) h;
7407 BFD_ASSERT (eh->elf.def_regular);
7408 linker_section_ptr = eh->linker_section_pointer;
7412 /* Handle local symbol. */
7413 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7415 BFD_ASSERT (is_ppc_elf (input_bfd));
7416 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7417 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7420 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7423 BFD_ASSERT (linker_section_ptr != NULL);
7425 /* Offset will always be a multiple of four, so use the bottom bit
7426 as a "written" flag. */
7427 if ((linker_section_ptr->offset & 1) == 0)
7429 bfd_put_32 (lsect->section->owner,
7430 relocation + linker_section_ptr->addend,
7431 lsect->section->contents + linker_section_ptr->offset);
7432 linker_section_ptr->offset += 1;
7435 relocation = (lsect->section->output_section->vma
7436 + lsect->section->output_offset
7437 + linker_section_ptr->offset - 1
7438 - SYM_VAL (lsect->sym));
7442 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7443 lsect->name, (long) relocation, (long) relocation);
7449 #define PPC_LO(v) ((v) & 0xffff)
7450 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7451 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7454 write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
7455 asection *plt_sec, unsigned char *p,
7456 struct bfd_link_info *info)
7458 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7459 bfd *output_bfd = info->output_bfd;
7461 unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
7464 && h == htab->tls_get_addr
7465 && !htab->params->no_tls_get_addr_opt)
7467 bfd_put_32 (output_bfd, LWZ_11_3, p);
7469 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
7471 bfd_put_32 (output_bfd, MR_0_3, p);
7473 bfd_put_32 (output_bfd, CMPWI_11_0, p);
7475 bfd_put_32 (output_bfd, ADD_3_12_2, p);
7477 bfd_put_32 (output_bfd, BEQLR, p);
7479 bfd_put_32 (output_bfd, MR_3_0, p);
7481 bfd_put_32 (output_bfd, NOP, p);
7485 plt = ((ent->plt.offset & ~1)
7486 + plt_sec->output_section->vma
7487 + plt_sec->output_offset);
7489 if (bfd_link_pic (info))
7493 if (ent->addend >= 32768)
7495 + ent->sec->output_section->vma
7496 + ent->sec->output_offset);
7497 else if (htab->elf.hgot != NULL)
7498 got = SYM_VAL (htab->elf.hgot);
7502 if (plt + 0x8000 < 0x10000)
7503 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7506 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7508 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7513 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7515 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7518 bfd_put_32 (output_bfd, MTCTR_11, p);
7520 bfd_put_32 (output_bfd, BCTR, p);
7524 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7529 /* Return true if symbol is defined statically. */
7532 is_static_defined (struct elf_link_hash_entry *h)
7534 return ((h->root.type == bfd_link_hash_defined
7535 || h->root.type == bfd_link_hash_defweak)
7536 && h->root.u.def.section != NULL
7537 && h->root.u.def.section->output_section != NULL);
7540 /* If INSN is an opcode that may be used with an @tls operand, return
7541 the transformed insn for TLS optimisation, otherwise return 0. If
7542 REG is non-zero only match an insn with RB or RA equal to REG. */
7545 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7549 if ((insn & (0x3f << 26)) != 31 << 26)
7552 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7553 rtra = insn & ((1 << 26) - (1 << 16));
7554 else if (((insn >> 16) & 0x1f) == reg)
7555 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7559 if ((insn & (0x3ff << 1)) == 266 << 1)
7562 else if ((insn & (0x1f << 1)) == 23 << 1
7563 && ((insn & (0x1f << 6)) < 14 << 6
7564 || ((insn & (0x1f << 6)) >= 16 << 6
7565 && (insn & (0x1f << 6)) < 24 << 6)))
7566 /* load and store indexed -> dform. */
7567 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7568 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7569 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7570 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7571 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7573 insn = (58 << 26) | 2;
7580 /* If INSN is an opcode that may be used with an @tprel operand, return
7581 the transformed insn for an undefined weak symbol, ie. with the
7582 thread pointer REG operand removed. Otherwise return 0. */
7585 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7587 if ((insn & (0x1f << 16)) == reg << 16
7588 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7589 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7590 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7591 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7592 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7593 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7594 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7595 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7596 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7597 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7598 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7599 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7600 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7601 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7602 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7603 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7605 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7606 && ((insn & 3) == 0 || (insn & 3) == 3))))
7608 insn &= ~(0x1f << 16);
7610 else if ((insn & (0x1f << 21)) == reg << 21
7611 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7612 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7613 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7615 insn &= ~(0x1f << 21);
7616 insn |= (insn & (0x1f << 16)) << 5;
7617 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7618 insn -= 2 >> 26; /* convert to ori,oris */
7626 is_insn_ds_form (unsigned int insn)
7628 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7629 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7630 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7631 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7635 is_insn_dq_form (unsigned int insn)
7637 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7638 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7639 && (insn & 3) == 1));
7642 /* The RELOCATE_SECTION function is called by the ELF backend linker
7643 to handle the relocations for a section.
7645 The relocs are always passed as Rela structures; if the section
7646 actually uses Rel structures, the r_addend field will always be
7649 This function is responsible for adjust the section contents as
7650 necessary, and (if using Rela relocs and generating a
7651 relocatable output file) adjusting the reloc addend as
7654 This function does not have to worry about setting the reloc
7655 address or the reloc symbol index.
7657 LOCAL_SYMS is a pointer to the swapped in local symbols.
7659 LOCAL_SECTIONS is an array giving the section in the input file
7660 corresponding to the st_shndx field of each local symbol.
7662 The global hash table entry for the global symbols can be found
7663 via elf_sym_hashes (input_bfd).
7665 When generating relocatable output, this function must handle
7666 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7667 going to be the section symbol corresponding to the output
7668 section, which means that the addend must be adjusted
7672 ppc_elf_relocate_section (bfd *output_bfd,
7673 struct bfd_link_info *info,
7675 asection *input_section,
7677 Elf_Internal_Rela *relocs,
7678 Elf_Internal_Sym *local_syms,
7679 asection **local_sections)
7681 Elf_Internal_Shdr *symtab_hdr;
7682 struct elf_link_hash_entry **sym_hashes;
7683 struct ppc_elf_link_hash_table *htab;
7684 Elf_Internal_Rela *rel;
7685 Elf_Internal_Rela *wrel;
7686 Elf_Internal_Rela *relend;
7687 Elf_Internal_Rela outrel;
7689 bfd_vma *local_got_offsets;
7690 bfd_boolean ret = TRUE;
7691 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7692 bfd_boolean is_vxworks_tls;
7693 unsigned int picfixup_size = 0;
7694 struct ppc_elf_relax_info *relax_info = NULL;
7697 _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
7698 "%ld relocations%s",
7699 input_bfd, input_section,
7700 (long) input_section->reloc_count,
7701 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7704 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7706 /* Initialize howto table if not already done. */
7707 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7708 ppc_elf_howto_init ();
7710 htab = ppc_elf_hash_table (info);
7711 local_got_offsets = elf_local_got_offsets (input_bfd);
7712 symtab_hdr = &elf_symtab_hdr (input_bfd);
7713 sym_hashes = elf_sym_hashes (input_bfd);
7714 /* We have to handle relocations in vxworks .tls_vars sections
7715 specially, because the dynamic loader is 'weird'. */
7716 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7717 && !strcmp (input_section->output_section->name,
7719 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7720 relax_info = elf_section_data (input_section)->sec_info;
7721 rel = wrel = relocs;
7722 relend = relocs + input_section->reloc_count;
7723 for (; rel < relend; wrel++, rel++)
7725 enum elf_ppc_reloc_type r_type;
7727 bfd_reloc_status_type r;
7728 Elf_Internal_Sym *sym;
7730 struct elf_link_hash_entry *h;
7731 const char *sym_name;
7732 reloc_howto_type *howto;
7733 unsigned long r_symndx;
7735 bfd_vma branch_bit, from;
7736 bfd_boolean unresolved_reloc;
7738 unsigned int tls_type, tls_mask, tls_gd;
7739 struct plt_entry **ifunc;
7740 struct reloc_howto_struct alt_howto;
7743 r_type = ELF32_R_TYPE (rel->r_info);
7747 unresolved_reloc = FALSE;
7749 r_symndx = ELF32_R_SYM (rel->r_info);
7751 if (r_symndx < symtab_hdr->sh_info)
7753 sym = local_syms + r_symndx;
7754 sec = local_sections[r_symndx];
7755 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7757 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7761 bfd_boolean ignored;
7763 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7764 r_symndx, symtab_hdr, sym_hashes,
7766 unresolved_reloc, warned, ignored);
7768 sym_name = h->root.root.string;
7771 if (sec != NULL && discarded_section (sec))
7773 /* For relocs against symbols from removed linkonce sections,
7774 or sections discarded by a linker script, we just want the
7775 section contents zeroed. Avoid any special processing. */
7777 if (r_type < R_PPC_max)
7778 howto = ppc_elf_howto_table[r_type];
7780 _bfd_clear_contents (howto, input_bfd, input_section,
7781 contents + rel->r_offset);
7782 wrel->r_offset = rel->r_offset;
7786 /* For ld -r, remove relocations in debug sections against
7787 symbols defined in discarded sections. Not done for
7788 non-debug to preserve relocs in .eh_frame which the
7789 eh_frame editing code expects to be present. */
7790 if (bfd_link_relocatable (info)
7791 && (input_section->flags & SEC_DEBUGGING))
7797 if (bfd_link_relocatable (info))
7800 && r_type == R_PPC_PLTREL24
7801 && rel->r_addend != 0)
7803 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7804 addend specifies the GOT pointer offset within .got2. */
7805 rel->r_addend += got2->output_offset;
7807 if (r_type != R_PPC_RELAX_PLT
7808 && r_type != R_PPC_RELAX_PLTREL24
7809 && r_type != R_PPC_RELAX)
7813 /* TLS optimizations. Replace instruction sequences and relocs
7814 based on information we collected in tls_optimize. We edit
7815 RELOCS so that --emit-relocs will output something sensible
7816 for the final instruction stream. */
7820 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7821 else if (local_got_offsets != NULL)
7823 struct plt_entry **local_plt;
7826 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7827 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7828 tls_mask = lgot_masks[r_symndx];
7831 /* Ensure reloc mapping code below stays sane. */
7832 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7833 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7834 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7835 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7836 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7837 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7838 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7839 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7846 case R_PPC_GOT_TPREL16:
7847 case R_PPC_GOT_TPREL16_LO:
7848 if ((tls_mask & TLS_TLS) != 0
7849 && (tls_mask & TLS_TPREL) == 0)
7853 insn = bfd_get_32 (input_bfd,
7854 contents + rel->r_offset - d_offset);
7856 insn |= 0x3c020000; /* addis 0,2,0 */
7857 bfd_put_32 (input_bfd, insn,
7858 contents + rel->r_offset - d_offset);
7859 r_type = R_PPC_TPREL16_HA;
7860 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7865 if ((tls_mask & TLS_TLS) != 0
7866 && (tls_mask & TLS_TPREL) == 0)
7870 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7871 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7874 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7875 r_type = R_PPC_TPREL16_LO;
7876 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7878 /* Was PPC_TLS which sits on insn boundary, now
7879 PPC_TPREL16_LO which is at low-order half-word. */
7880 rel->r_offset += d_offset;
7884 case R_PPC_GOT_TLSGD16_HI:
7885 case R_PPC_GOT_TLSGD16_HA:
7886 tls_gd = TLS_TPRELGD;
7887 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7891 case R_PPC_GOT_TLSLD16_HI:
7892 case R_PPC_GOT_TLSLD16_HA:
7893 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7896 if ((tls_mask & tls_gd) != 0)
7897 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7898 + R_PPC_GOT_TPREL16);
7901 rel->r_offset -= d_offset;
7902 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7903 r_type = R_PPC_NONE;
7905 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7909 case R_PPC_GOT_TLSGD16:
7910 case R_PPC_GOT_TLSGD16_LO:
7911 tls_gd = TLS_TPRELGD;
7912 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7916 case R_PPC_GOT_TLSLD16:
7917 case R_PPC_GOT_TLSLD16_LO:
7918 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7920 unsigned int insn1, insn2;
7924 offset = (bfd_vma) -1;
7925 /* If not using the newer R_PPC_TLSGD/LD to mark
7926 __tls_get_addr calls, we must trust that the call
7927 stays with its arg setup insns, ie. that the next
7928 reloc is the __tls_get_addr call associated with
7929 the current reloc. Edit both insns. */
7930 if (input_section->has_tls_get_addr_call
7932 && branch_reloc_hash_match (input_bfd, rel + 1,
7933 htab->tls_get_addr))
7934 offset = rel[1].r_offset;
7935 /* We read the low GOT_TLS insn because we need to keep
7936 the destination reg. It may be something other than
7937 the usual r3, and moved to r3 before the call by
7938 intervening code. */
7939 insn1 = bfd_get_32 (input_bfd,
7940 contents + rel->r_offset - d_offset);
7941 if ((tls_mask & tls_gd) != 0)
7944 insn1 &= (0x1f << 21) | (0x1f << 16);
7945 insn1 |= 32 << 26; /* lwz */
7946 if (offset != (bfd_vma) -1)
7948 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7949 insn2 = 0x7c631214; /* add 3,3,2 */
7950 bfd_put_32 (input_bfd, insn2, contents + offset);
7952 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7953 + R_PPC_GOT_TPREL16);
7954 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7959 insn1 &= 0x1f << 21;
7960 insn1 |= 0x3c020000; /* addis r,2,0 */
7963 /* Was an LD reloc. */
7965 r_symndx < symtab_hdr->sh_info;
7967 if (local_sections[r_symndx] == sec)
7969 if (r_symndx >= symtab_hdr->sh_info)
7970 r_symndx = STN_UNDEF;
7971 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7972 if (r_symndx != STN_UNDEF)
7973 rel->r_addend -= (local_syms[r_symndx].st_value
7974 + sec->output_offset
7975 + sec->output_section->vma);
7977 r_type = R_PPC_TPREL16_HA;
7978 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7979 if (offset != (bfd_vma) -1)
7981 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7982 rel[1].r_offset = offset + d_offset;
7983 rel[1].r_addend = rel->r_addend;
7984 insn2 = 0x38630000; /* addi 3,3,0 */
7985 bfd_put_32 (input_bfd, insn2, contents + offset);
7988 bfd_put_32 (input_bfd, insn1,
7989 contents + rel->r_offset - d_offset);
7992 /* We changed the symbol on an LD reloc. Start over
7993 in order to get h, sym, sec etc. right. */
8000 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8003 bfd_vma offset = rel->r_offset;
8005 if ((tls_mask & TLS_TPRELGD) != 0)
8008 r_type = R_PPC_NONE;
8009 insn2 = 0x7c631214; /* add 3,3,2 */
8014 r_type = R_PPC_TPREL16_LO;
8015 rel->r_offset += d_offset;
8016 insn2 = 0x38630000; /* addi 3,3,0 */
8018 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8019 bfd_put_32 (input_bfd, insn2, contents + offset);
8020 /* Zap the reloc on the _tls_get_addr call too. */
8021 BFD_ASSERT (offset == rel[1].r_offset);
8022 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8027 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8032 r_symndx < symtab_hdr->sh_info;
8034 if (local_sections[r_symndx] == sec)
8036 if (r_symndx >= symtab_hdr->sh_info)
8037 r_symndx = STN_UNDEF;
8038 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8039 if (r_symndx != STN_UNDEF)
8040 rel->r_addend -= (local_syms[r_symndx].st_value
8041 + sec->output_offset
8042 + sec->output_section->vma);
8044 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8045 rel->r_offset += d_offset;
8046 insn2 = 0x38630000; /* addi 3,3,0 */
8047 bfd_put_32 (input_bfd, insn2,
8048 contents + rel->r_offset - d_offset);
8049 /* Zap the reloc on the _tls_get_addr call too. */
8050 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8051 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8057 /* Handle other relocations that tweak non-addend part of insn. */
8064 /* Branch taken prediction relocations. */
8065 case R_PPC_ADDR14_BRTAKEN:
8066 case R_PPC_REL14_BRTAKEN:
8067 branch_bit = BRANCH_PREDICT_BIT;
8070 /* Branch not taken prediction relocations. */
8071 case R_PPC_ADDR14_BRNTAKEN:
8072 case R_PPC_REL14_BRNTAKEN:
8076 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8077 insn &= ~BRANCH_PREDICT_BIT;
8080 from = (rel->r_offset
8081 + input_section->output_offset
8082 + input_section->output_section->vma);
8084 /* Invert 'y' bit if not the default. */
8085 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8086 insn ^= BRANCH_PREDICT_BIT;
8088 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8093 if (ELIMINATE_COPY_RELOCS
8097 && ppc_elf_hash_entry (h)->has_addr16_ha
8098 && ppc_elf_hash_entry (h)->has_addr16_lo
8099 && htab->params->pic_fixup > 0)
8101 /* Convert lis;addi or lis;load/store accessing a protected
8102 variable defined in a shared library to PIC. */
8105 if (r_type == R_PPC_ADDR16_HA)
8107 insn = bfd_get_32 (input_bfd,
8108 contents + rel->r_offset - d_offset);
8109 if ((insn & (0x3f << 26)) == (15u << 26)
8110 && (insn & (0x1f << 16)) == 0 /* lis */)
8116 p = (contents + input_section->size
8117 - relax_info->workaround_size
8118 - relax_info->picfixup_size
8120 off = (p - contents) - (rel->r_offset - d_offset);
8121 if (off > 0x1fffffc || (off & 3) != 0)
8122 info->callbacks->einfo
8123 (_("%H: fixup branch overflow\n"),
8124 input_bfd, input_section, rel->r_offset);
8126 bfd_put_32 (input_bfd, B | off,
8127 contents + rel->r_offset - d_offset);
8128 got_addr = (htab->elf.sgot->output_section->vma
8129 + htab->elf.sgot->output_offset
8130 + (h->got.offset & ~1));
8131 wrel->r_offset = (p - contents) + d_offset;
8132 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8133 wrel->r_addend = got_addr;
8135 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8136 bfd_put_32 (input_bfd, insn, p);
8138 /* Convert lis to lwz, loading address from GOT. */
8140 insn ^= (32u ^ 15u) << 26;
8141 insn |= (insn & (0x1f << 21)) >> 5;
8142 insn |= got_addr & 0xffff;
8143 bfd_put_32 (input_bfd, insn, p + 4);
8145 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8146 picfixup_size += 12;
8148 /* Use one of the spare relocs, so --emit-relocs
8149 output is reasonable. */
8150 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8152 rel->r_offset = wrel[-1].r_offset + 4;
8153 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8154 rel->r_addend = wrel[-1].r_addend;
8156 /* Continue on as if we had a got reloc, to output
8158 r_type = R_PPC_GOT16_LO;
8162 /* xgettext:c-format */
8163 (_("%pB(%pA+%#" PRIx64 "): error: "
8164 "%s with unexpected instruction %#x"),
8165 input_bfd, input_section, (uint64_t) rel->r_offset,
8166 "R_PPC_ADDR16_HA", insn);
8168 else if (r_type == R_PPC_ADDR16_LO)
8170 insn = bfd_get_32 (input_bfd,
8171 contents + rel->r_offset - d_offset);
8172 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8173 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8174 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8175 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8176 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8177 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8178 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8179 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8180 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8181 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8182 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8183 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8184 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8185 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8186 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8188 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8189 && ((insn & 3) == 0 || (insn & 3) == 3)))
8191 /* Arrange to apply the reloc addend, if any. */
8193 unresolved_reloc = FALSE;
8194 rel->r_info = ELF32_R_INFO (0, r_type);
8198 /* xgettext:c-format */
8199 (_("%pB(%pA+%#" PRIx64 "): error: "
8200 "%s with unexpected instruction %#x"),
8201 input_bfd, input_section, (uint64_t) rel->r_offset,
8202 "R_PPC_ADDR16_LO", insn);
8207 if (!htab->is_vxworks)
8209 struct plt_entry *ent;
8213 if (h->type == STT_GNU_IFUNC)
8214 ifunc = &h->plt.plist;
8216 else if (local_got_offsets != NULL
8217 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8219 struct plt_entry **local_plt;
8221 local_plt = (struct plt_entry **) (local_got_offsets
8222 + symtab_hdr->sh_info);
8223 ifunc = local_plt + r_symndx;
8228 && (!bfd_link_pic (info)
8229 || is_branch_reloc (r_type)))
8232 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8233 addend = rel->r_addend;
8234 ent = find_plt_ent (ifunc, got2, addend);
8238 if (bfd_link_pic (info)
8240 && htab->plt_type != PLT_NEW
8241 && (!htab->elf.dynamic_sections_created
8243 || h->dynindx == -1))
8245 /* Uh oh, we are going to create a pic glink stub
8246 for an ifunc (here for h == NULL and later in
8247 finish_dynamic_symbol for h != NULL), and
8248 apparently are using code compiled with
8249 -mbss-plt. The difficulty is that -mbss-plt code
8250 gives no indication via a magic PLTREL24 addend
8251 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8252 is pointing into a .got2 section (and how far
8254 info->callbacks->einfo
8255 /* xgettext:c-format */
8256 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8257 input_bfd, input_section, rel->r_offset, sym_name);
8259 if (h == NULL && (ent->plt.offset & 1) == 0)
8261 Elf_Internal_Rela rela;
8264 rela.r_offset = (htab->elf.iplt->output_section->vma
8265 + htab->elf.iplt->output_offset
8267 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8268 rela.r_addend = relocation;
8269 loc = htab->elf.irelplt->contents;
8270 loc += (htab->elf.irelplt->reloc_count++
8271 * sizeof (Elf32_External_Rela));
8272 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8273 htab->local_ifunc_resolver = 1;
8275 ent->plt.offset |= 1;
8277 if (h == NULL && (ent->glink_offset & 1) == 0)
8279 unsigned char *p = ((unsigned char *) htab->glink->contents
8280 + ent->glink_offset);
8282 write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
8283 ent->glink_offset |= 1;
8286 unresolved_reloc = FALSE;
8287 if (htab->plt_type == PLT_NEW
8288 || !htab->elf.dynamic_sections_created
8290 || h->dynindx == -1)
8291 relocation = (htab->glink->output_section->vma
8292 + htab->glink->output_offset
8293 + (ent->glink_offset & ~1));
8295 relocation = (htab->elf.splt->output_section->vma
8296 + htab->elf.splt->output_offset
8301 addend = rel->r_addend;
8303 if (r_type < R_PPC_max)
8304 howto = ppc_elf_howto_table[r_type];
8311 case R_PPC_TPREL16_HA:
8312 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8314 bfd_byte *p = contents + (rel->r_offset & ~3);
8315 unsigned int insn = bfd_get_32 (input_bfd, p);
8316 if ((insn & ((0x3f << 26) | 0x1f << 16))
8317 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8318 /* xgettext:c-format */
8319 info->callbacks->minfo
8320 (_("%H: warning: %s unexpected insn %#x.\n"),
8321 input_bfd, input_section, rel->r_offset, howto->name, insn);
8323 bfd_put_32 (input_bfd, NOP, p);
8327 case R_PPC_TPREL16_LO:
8328 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8330 bfd_byte *p = contents + (rel->r_offset & ~3);
8331 unsigned int insn = bfd_get_32 (input_bfd, p);
8332 insn &= ~(0x1f << 16);
8334 bfd_put_32 (input_bfd, insn, p);
8343 /* xgettext:c-format */
8344 _bfd_error_handler (_("%pB: %s unsupported"),
8345 input_bfd, howto->name);
8347 bfd_set_error (bfd_error_bad_value);
8355 case R_PPC_EMB_MRKREF:
8356 case R_PPC_GNU_VTINHERIT:
8357 case R_PPC_GNU_VTENTRY:
8360 /* GOT16 relocations. Like an ADDR16 using the symbol's
8361 address in the GOT as relocation value instead of the
8362 symbol's value itself. Also, create a GOT entry for the
8363 symbol and put the symbol value there. */
8364 case R_PPC_GOT_TLSGD16:
8365 case R_PPC_GOT_TLSGD16_LO:
8366 case R_PPC_GOT_TLSGD16_HI:
8367 case R_PPC_GOT_TLSGD16_HA:
8368 tls_type = TLS_TLS | TLS_GD;
8371 case R_PPC_GOT_TLSLD16:
8372 case R_PPC_GOT_TLSLD16_LO:
8373 case R_PPC_GOT_TLSLD16_HI:
8374 case R_PPC_GOT_TLSLD16_HA:
8375 tls_type = TLS_TLS | TLS_LD;
8378 case R_PPC_GOT_TPREL16:
8379 case R_PPC_GOT_TPREL16_LO:
8380 case R_PPC_GOT_TPREL16_HI:
8381 case R_PPC_GOT_TPREL16_HA:
8382 tls_type = TLS_TLS | TLS_TPREL;
8385 case R_PPC_GOT_DTPREL16:
8386 case R_PPC_GOT_DTPREL16_LO:
8387 case R_PPC_GOT_DTPREL16_HI:
8388 case R_PPC_GOT_DTPREL16_HA:
8389 tls_type = TLS_TLS | TLS_DTPREL;
8393 case R_PPC_GOT16_LO:
8394 case R_PPC_GOT16_HI:
8395 case R_PPC_GOT16_HA:
8399 /* Relocation is to the entry for this symbol in the global
8405 if (htab->elf.sgot == NULL)
8409 if (tls_type == (TLS_TLS | TLS_LD)
8411 || !h->def_dynamic))
8412 offp = &htab->tlsld_got.offset;
8415 if (!htab->elf.dynamic_sections_created
8417 || SYMBOL_REFERENCES_LOCAL (info, h)
8418 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8419 /* This is actually a static link, or it is a
8420 -Bsymbolic link and the symbol is defined
8421 locally, or the symbol was forced to be local
8422 because of a version file. */
8427 unresolved_reloc = FALSE;
8429 offp = &h->got.offset;
8433 if (local_got_offsets == NULL)
8435 offp = &local_got_offsets[r_symndx];
8438 /* The offset must always be a multiple of 4. We use the
8439 least significant bit to record whether we have already
8440 processed this entry. */
8446 unsigned int tls_m = (tls_mask
8447 & (TLS_LD | TLS_GD | TLS_DTPREL
8448 | TLS_TPREL | TLS_TPRELGD));
8450 if (offp == &htab->tlsld_got.offset)
8456 /* We might have multiple got entries for this sym.
8457 Initialize them all. */
8462 if ((tls_m & TLS_LD) != 0)
8464 tls_ty = TLS_TLS | TLS_LD;
8467 else if ((tls_m & TLS_GD) != 0)
8469 tls_ty = TLS_TLS | TLS_GD;
8472 else if ((tls_m & TLS_DTPREL) != 0)
8474 tls_ty = TLS_TLS | TLS_DTPREL;
8475 tls_m &= ~TLS_DTPREL;
8477 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8479 tls_ty = TLS_TLS | TLS_TPREL;
8483 /* Generate relocs for the dynamic linker. */
8485 || (bfd_link_pic (info)
8487 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8488 || offp == &htab->tlsld_got.offset)
8489 && !(tls_ty == (TLS_TLS | TLS_TPREL)
8490 && bfd_link_executable (info)
8491 && SYMBOL_REFERENCES_LOCAL (info, h))))
8493 asection *rsec = htab->elf.srelgot;
8498 rsec = htab->elf.irelplt;
8500 htab->local_ifunc_resolver = 1;
8501 else if (is_static_defined (h))
8502 htab->maybe_local_ifunc_resolver = 1;
8504 outrel.r_offset = (htab->elf.sgot->output_section->vma
8505 + htab->elf.sgot->output_offset
8507 outrel.r_addend = 0;
8508 if (tls_ty & (TLS_LD | TLS_GD))
8510 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8511 if (tls_ty == (TLS_TLS | TLS_GD))
8513 loc = rsec->contents;
8514 loc += (rsec->reloc_count++
8515 * sizeof (Elf32_External_Rela));
8516 bfd_elf32_swap_reloca_out (output_bfd,
8518 outrel.r_offset += 4;
8520 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8523 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8524 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8525 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8526 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8528 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8529 else if (ifunc != NULL)
8530 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8532 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8533 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8535 outrel.r_addend += relocation;
8536 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8538 if (htab->elf.tls_sec == NULL)
8539 outrel.r_addend = 0;
8541 outrel.r_addend -= htab->elf.tls_sec->vma;
8544 loc = rsec->contents;
8545 loc += (rsec->reloc_count++
8546 * sizeof (Elf32_External_Rela));
8547 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8550 /* Init the .got section contents if we're not
8551 emitting a reloc. */
8554 bfd_vma value = relocation;
8558 if (htab->elf.tls_sec == NULL)
8562 if (tls_ty & TLS_LD)
8565 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8566 if (tls_ty & TLS_TPREL)
8567 value += DTP_OFFSET - TP_OFFSET;
8570 if (tls_ty & (TLS_LD | TLS_GD))
8572 bfd_put_32 (input_bfd, value,
8573 htab->elf.sgot->contents + off + 4);
8577 bfd_put_32 (input_bfd, value,
8578 htab->elf.sgot->contents + off);
8582 if (tls_ty & (TLS_LD | TLS_GD))
8591 if (off >= (bfd_vma) -2)
8594 if ((tls_type & TLS_TLS) != 0)
8596 if (tls_type != (TLS_TLS | TLS_LD))
8598 if ((tls_mask & TLS_LD) != 0
8600 || !h->def_dynamic))
8602 if (tls_type != (TLS_TLS | TLS_GD))
8604 if ((tls_mask & TLS_GD) != 0)
8606 if (tls_type != (TLS_TLS | TLS_DTPREL))
8608 if ((tls_mask & TLS_DTPREL) != 0)
8615 /* If here for a picfixup, we're done. */
8616 if (r_type != ELF32_R_TYPE (rel->r_info))
8619 relocation = (htab->elf.sgot->output_section->vma
8620 + htab->elf.sgot->output_offset
8622 - SYM_VAL (htab->elf.hgot));
8624 /* Addends on got relocations don't make much sense.
8625 x+off@got is actually x@got+off, and since the got is
8626 generated by a hash table traversal, the value in the
8627 got at entry m+n bears little relation to the entry m. */
8629 info->callbacks->einfo
8630 /* xgettext:c-format */
8631 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8632 input_bfd, input_section, rel->r_offset,
8638 /* Relocations that need no special processing. */
8639 case R_PPC_LOCAL24PC:
8640 /* It makes no sense to point a local relocation
8641 at a symbol not in this object. */
8642 if (unresolved_reloc)
8644 (*info->callbacks->undefined_symbol) (info,
8645 h->root.root.string,
8652 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8654 /* @local on an ifunc does not really make sense since
8655 the ifunc resolver can take you anywhere. More
8656 seriously, calls to ifuncs must go through a plt call
8657 stub, and for pic the plt call stubs uses r30 to
8658 access the PLT. The problem is that a call that is
8659 local won't have the +32k reloc addend trick marking
8660 -fPIC code, so the linker won't know whether r30 is
8661 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8662 /* xgettext:c-format */
8663 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8664 input_bfd, input_section, rel->r_offset,
8665 h->root.root.string);
8669 case R_PPC_DTPREL16:
8670 case R_PPC_DTPREL16_LO:
8671 case R_PPC_DTPREL16_HI:
8672 case R_PPC_DTPREL16_HA:
8673 if (htab->elf.tls_sec != NULL)
8674 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8677 /* Relocations that may need to be propagated if this is a shared
8680 case R_PPC_TPREL16_LO:
8681 case R_PPC_TPREL16_HI:
8682 case R_PPC_TPREL16_HA:
8684 && h->root.type == bfd_link_hash_undefweak
8685 && h->dynindx == -1)
8687 /* Make this relocation against an undefined weak symbol
8688 resolve to zero. This is really just a tweak, since
8689 code using weak externs ought to check that they are
8690 defined before using them. */
8691 bfd_byte *p = contents + rel->r_offset - d_offset;
8692 unsigned int insn = bfd_get_32 (input_bfd, p);
8693 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8695 bfd_put_32 (input_bfd, insn, p);
8698 if (htab->elf.tls_sec != NULL)
8699 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8700 /* The TPREL16 relocs shouldn't really be used in shared
8701 libs or with non-local symbols as that will result in
8702 DT_TEXTREL being set, but support them anyway. */
8706 if (htab->elf.tls_sec != NULL)
8707 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8710 case R_PPC_DTPREL32:
8711 if (htab->elf.tls_sec != NULL)
8712 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8715 case R_PPC_DTPMOD32:
8721 case R_PPC_REL16_LO:
8722 case R_PPC_REL16_HI:
8723 case R_PPC_REL16_HA:
8724 case R_PPC_REL16DX_HA:
8728 if (h == NULL || h == htab->elf.hgot)
8734 case R_PPC_ADDR16_LO:
8735 case R_PPC_ADDR16_HI:
8736 case R_PPC_ADDR16_HA:
8741 case R_PPC_VLE_REL8:
8742 case R_PPC_VLE_REL15:
8743 case R_PPC_VLE_REL24:
8746 case R_PPC_REL14_BRTAKEN:
8747 case R_PPC_REL14_BRNTAKEN:
8748 /* If these relocations are not to a named symbol, they can be
8749 handled right here, no need to bother the dynamic linker. */
8750 if (SYMBOL_CALLS_LOCAL (info, h)
8751 || h == htab->elf.hgot)
8757 case R_PPC_ADDR14_BRTAKEN:
8758 case R_PPC_ADDR14_BRNTAKEN:
8759 if (h != NULL && !bfd_link_pic (info))
8764 if ((input_section->flags & SEC_ALLOC) == 0
8768 if (bfd_link_pic (info)
8770 || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
8771 && ((h != NULL && pc_dynrelocs (h))
8772 || must_be_dyn_reloc (info, r_type)))
8774 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
8782 fprintf (stderr, "ppc_elf_relocate_section needs to "
8783 "create relocation for %s\n",
8784 (h && h->root.root.string
8785 ? h->root.root.string : "<unknown>"));
8788 /* When generating a shared object, these relocations
8789 are copied into the output file to be resolved at run
8792 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8795 if (outrel.r_offset == (bfd_vma) -1
8796 || outrel.r_offset == (bfd_vma) -2)
8797 skip = (int) outrel.r_offset;
8798 outrel.r_offset += (input_section->output_section->vma
8799 + input_section->output_offset);
8802 memset (&outrel, 0, sizeof outrel);
8803 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8806 BFD_ASSERT (indx != -1);
8807 unresolved_reloc = FALSE;
8808 outrel.r_info = ELF32_R_INFO (indx, r_type);
8809 outrel.r_addend = rel->r_addend;
8813 outrel.r_addend = relocation + rel->r_addend;
8815 if (r_type != R_PPC_ADDR32)
8819 /* If we get here when building a static
8820 executable, then the libc startup function
8821 responsible for applying indirect function
8822 relocations is going to complain about
8824 If we get here when building a dynamic
8825 executable, it will be because we have
8826 a text relocation. The dynamic loader
8827 will set the text segment writable and
8828 non-executable to apply text relocations.
8829 So we'll segfault when trying to run the
8830 indirection function to resolve the reloc. */
8831 info->callbacks->einfo
8832 /* xgettext:c-format */
8833 (_("%H: relocation %s for indirect "
8834 "function %s unsupported\n"),
8835 input_bfd, input_section, rel->r_offset,
8840 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8842 else if (sec == NULL || sec->owner == NULL)
8844 bfd_set_error (bfd_error_bad_value);
8851 /* We are turning this relocation into one
8852 against a section symbol. It would be
8853 proper to subtract the symbol's value,
8854 osec->vma, from the emitted reloc addend,
8855 but ld.so expects buggy relocs.
8856 FIXME: Why not always use a zero index? */
8857 osec = sec->output_section;
8858 indx = elf_section_data (osec)->dynindx;
8861 osec = htab->elf.text_index_section;
8862 indx = elf_section_data (osec)->dynindx;
8864 BFD_ASSERT (indx != 0);
8867 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8868 indx, osec->name, osec->flags,
8869 h->root.root.string);
8873 outrel.r_info = ELF32_R_INFO (indx, r_type);
8875 else if (ifunc != NULL)
8876 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8878 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8881 sreloc = elf_section_data (input_section)->sreloc;
8884 sreloc = htab->elf.irelplt;
8886 htab->local_ifunc_resolver = 1;
8887 else if (is_static_defined (h))
8888 htab->maybe_local_ifunc_resolver = 1;
8893 loc = sreloc->contents;
8894 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8895 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8900 /* This reloc will be computed at runtime. Clear the memory
8901 so that it contains a predictable value for prelink. */
8904 relocation = howto->pc_relative ? outrel.r_offset : 0;
8911 case R_PPC_RELAX_PLT:
8912 case R_PPC_RELAX_PLTREL24:
8915 struct plt_entry *ent;
8916 bfd_vma got2_addend = 0;
8918 if (r_type == R_PPC_RELAX_PLTREL24)
8920 if (bfd_link_pic (info))
8921 got2_addend = addend;
8924 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8925 if (htab->plt_type == PLT_NEW)
8926 relocation = (htab->glink->output_section->vma
8927 + htab->glink->output_offset
8928 + ent->glink_offset);
8930 relocation = (htab->elf.splt->output_section->vma
8931 + htab->elf.splt->output_offset
8940 size_t insn_offset = rel->r_offset;
8943 if (bfd_link_pic (info))
8945 relocation -= (input_section->output_section->vma
8946 + input_section->output_offset
8947 + rel->r_offset - 4);
8948 stub = shared_stub_entry;
8949 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8950 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8951 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
8953 size = ARRAY_SIZE (shared_stub_entry) - 3;
8958 size = ARRAY_SIZE (stub_entry);
8961 relocation += addend;
8962 if (bfd_link_relocatable (info))
8965 /* First insn is HA, second is LO. */
8967 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8968 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8972 insn |= relocation & 0xffff;
8973 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8981 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8985 /* Rewrite the reloc and convert one of the trailing nop
8986 relocs to describe this relocation. */
8987 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8988 /* The relocs are at the bottom 2 bytes */
8989 wrel->r_offset = rel->r_offset + d_offset;
8990 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8991 wrel->r_addend = rel->r_addend;
8992 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8994 wrel->r_offset += 4;
8995 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8999 /* Indirect .sdata relocation. */
9000 case R_PPC_EMB_SDAI16:
9001 BFD_ASSERT (htab->sdata[0].section != NULL);
9002 if (!is_static_defined (htab->sdata[0].sym))
9004 unresolved_reloc = TRUE;
9008 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9009 h, relocation, rel);
9013 /* Indirect .sdata2 relocation. */
9014 case R_PPC_EMB_SDA2I16:
9015 BFD_ASSERT (htab->sdata[1].section != NULL);
9016 if (!is_static_defined (htab->sdata[1].sym))
9018 unresolved_reloc = TRUE;
9022 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9023 h, relocation, rel);
9027 /* Handle the TOC16 reloc. We want to use the offset within the .got
9028 section, not the actual VMA. This is appropriate when generating
9029 an embedded ELF object, for which the .got section acts like the
9030 AIX .toc section. */
9031 case R_PPC_TOC16: /* phony GOT16 relocations */
9032 if (sec == NULL || sec->output_section == NULL)
9034 unresolved_reloc = TRUE;
9037 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9039 || strcmp (bfd_get_section_name (sec->owner, sec),
9042 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9045 case R_PPC_PLTREL24:
9046 if (h != NULL && ifunc == NULL)
9048 struct plt_entry *ent;
9050 ent = find_plt_ent (&h->plt.plist, got2,
9051 bfd_link_pic (info) ? addend : 0);
9053 || htab->elf.splt == NULL)
9055 /* We didn't make a PLT entry for this symbol. This
9056 happens when statically linking PIC code, or when
9057 using -Bsymbolic. */
9061 /* Relocation is to the entry for this symbol in the
9062 procedure linkage table. */
9063 unresolved_reloc = FALSE;
9064 if (htab->plt_type == PLT_NEW)
9065 relocation = (htab->glink->output_section->vma
9066 + htab->glink->output_offset
9067 + ent->glink_offset);
9069 relocation = (htab->elf.splt->output_section->vma
9070 + htab->elf.splt->output_offset
9075 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9076 addend specifies the GOT pointer offset within .got2.
9077 Don't apply it to the relocation field. */
9081 /* Relocate against _SDA_BASE_. */
9082 case R_PPC_SDAREL16:
9085 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9088 || sec->output_section == NULL
9089 || !is_static_defined (sda))
9091 unresolved_reloc = TRUE;
9094 addend -= SYM_VAL (sda);
9096 name = bfd_get_section_name (output_bfd, sec->output_section);
9097 if (!(strcmp (name, ".sdata") == 0
9098 || strcmp (name, ".sbss") == 0))
9101 /* xgettext:c-format */
9102 (_("%pB: the target (%s) of a %s relocation is "
9103 "in the wrong output section (%s)"),
9112 /* Relocate against _SDA2_BASE_. */
9113 case R_PPC_EMB_SDA2REL:
9116 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9119 || sec->output_section == NULL
9120 || !is_static_defined (sda))
9122 unresolved_reloc = TRUE;
9125 addend -= SYM_VAL (sda);
9127 name = bfd_get_section_name (output_bfd, sec->output_section);
9128 if (!(strcmp (name, ".sdata2") == 0
9129 || strcmp (name, ".sbss2") == 0))
9132 /* xgettext:c-format */
9133 (_("%pB: the target (%s) of a %s relocation is "
9134 "in the wrong output section (%s)"),
9143 case R_PPC_VLE_LO16A:
9144 relocation = relocation + addend;
9145 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9146 contents + rel->r_offset, relocation,
9147 split16a_type, htab->params->vle_reloc_fixup);
9150 case R_PPC_VLE_LO16D:
9151 relocation = relocation + addend;
9152 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9153 contents + rel->r_offset, relocation,
9154 split16d_type, htab->params->vle_reloc_fixup);
9157 case R_PPC_VLE_HI16A:
9158 relocation = (relocation + addend) >> 16;
9159 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9160 contents + rel->r_offset, relocation,
9161 split16a_type, htab->params->vle_reloc_fixup);
9164 case R_PPC_VLE_HI16D:
9165 relocation = (relocation + addend) >> 16;
9166 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9167 contents + rel->r_offset, relocation,
9168 split16d_type, htab->params->vle_reloc_fixup);
9171 case R_PPC_VLE_HA16A:
9172 relocation = (relocation + addend + 0x8000) >> 16;
9173 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9174 contents + rel->r_offset, relocation,
9175 split16a_type, htab->params->vle_reloc_fixup);
9178 case R_PPC_VLE_HA16D:
9179 relocation = (relocation + addend + 0x8000) >> 16;
9180 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9181 contents + rel->r_offset, relocation,
9182 split16d_type, htab->params->vle_reloc_fixup);
9185 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9186 case R_PPC_EMB_SDA21:
9187 case R_PPC_VLE_SDA21:
9188 case R_PPC_EMB_RELSDA:
9189 case R_PPC_VLE_SDA21_LO:
9194 struct elf_link_hash_entry *sda = NULL;
9196 if (sec == NULL || sec->output_section == NULL)
9198 unresolved_reloc = TRUE;
9202 name = bfd_get_section_name (output_bfd, sec->output_section);
9203 if (strcmp (name, ".sdata") == 0
9204 || strcmp (name, ".sbss") == 0)
9207 sda = htab->sdata[0].sym;
9209 else if (strcmp (name, ".sdata2") == 0
9210 || strcmp (name, ".sbss2") == 0)
9213 sda = htab->sdata[1].sym;
9215 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9216 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9223 /* xgettext:c-format */
9224 (_("%pB: the target (%s) of a %s relocation is "
9225 "in the wrong output section (%s)"),
9231 bfd_set_error (bfd_error_bad_value);
9238 if (!is_static_defined (sda))
9240 unresolved_reloc = TRUE;
9243 addend -= SYM_VAL (sda);
9246 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9248 && (r_type == R_PPC_VLE_SDA21
9249 || r_type == R_PPC_VLE_SDA21_LO))
9251 relocation = relocation + addend;
9254 /* Force e_li insn, keeping RT from original insn. */
9258 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9259 /* Top 4 bits of value to 17..20. */
9260 insn |= (relocation & 0xf0000) >> 5;
9261 /* Next 5 bits of the value to 11..15. */
9262 insn |= (relocation & 0xf800) << 5;
9263 /* And the final 11 bits of the value to bits 21 to 31. */
9264 insn |= relocation & 0x7ff;
9266 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9268 if (r_type == R_PPC_VLE_SDA21
9269 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9273 else if (r_type == R_PPC_EMB_SDA21
9274 || r_type == R_PPC_VLE_SDA21
9275 || r_type == R_PPC_VLE_SDA21_LO)
9277 /* Fill in register field. */
9278 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9280 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9284 case R_PPC_VLE_SDAREL_LO16A:
9285 case R_PPC_VLE_SDAREL_LO16D:
9286 case R_PPC_VLE_SDAREL_HI16A:
9287 case R_PPC_VLE_SDAREL_HI16D:
9288 case R_PPC_VLE_SDAREL_HA16A:
9289 case R_PPC_VLE_SDAREL_HA16D:
9293 struct elf_link_hash_entry *sda = NULL;
9295 if (sec == NULL || sec->output_section == NULL)
9297 unresolved_reloc = TRUE;
9301 name = bfd_get_section_name (output_bfd, sec->output_section);
9302 if (strcmp (name, ".sdata") == 0
9303 || strcmp (name, ".sbss") == 0)
9304 sda = htab->sdata[0].sym;
9305 else if (strcmp (name, ".sdata2") == 0
9306 || strcmp (name, ".sbss2") == 0)
9307 sda = htab->sdata[1].sym;
9311 /* xgettext:c-format */
9312 (_("%pB: the target (%s) of a %s relocation is "
9313 "in the wrong output section (%s)"),
9319 bfd_set_error (bfd_error_bad_value);
9324 if (sda == NULL || !is_static_defined (sda))
9326 unresolved_reloc = TRUE;
9329 value = relocation + addend - SYM_VAL (sda);
9331 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9332 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9333 contents + rel->r_offset, value,
9335 htab->params->vle_reloc_fixup);
9336 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9337 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9338 contents + rel->r_offset, value,
9340 htab->params->vle_reloc_fixup);
9341 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9343 value = value >> 16;
9344 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9345 contents + rel->r_offset, value,
9347 htab->params->vle_reloc_fixup);
9349 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9351 value = value >> 16;
9352 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9353 contents + rel->r_offset, value,
9355 htab->params->vle_reloc_fixup);
9357 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9359 value = (value + 0x8000) >> 16;
9360 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9361 contents + rel->r_offset, value,
9363 htab->params->vle_reloc_fixup);
9365 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9367 value = (value + 0x8000) >> 16;
9368 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9369 contents + rel->r_offset, value,
9371 htab->params->vle_reloc_fixup);
9376 case R_PPC_VLE_ADDR20:
9377 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9380 /* Relocate against the beginning of the section. */
9382 case R_PPC_SECTOFF_LO:
9383 case R_PPC_SECTOFF_HI:
9384 case R_PPC_SECTOFF_HA:
9385 if (sec == NULL || sec->output_section == NULL)
9387 unresolved_reloc = TRUE;
9390 addend -= sec->output_section->vma;
9393 /* Negative relocations. */
9394 case R_PPC_EMB_NADDR32:
9395 case R_PPC_EMB_NADDR16:
9396 case R_PPC_EMB_NADDR16_LO:
9397 case R_PPC_EMB_NADDR16_HI:
9398 case R_PPC_EMB_NADDR16_HA:
9399 addend -= 2 * relocation;
9403 case R_PPC_GLOB_DAT:
9404 case R_PPC_JMP_SLOT:
9405 case R_PPC_RELATIVE:
9406 case R_PPC_IRELATIVE:
9408 case R_PPC_PLTREL32:
9409 case R_PPC_PLT16_LO:
9410 case R_PPC_PLT16_HI:
9411 case R_PPC_PLT16_HA:
9413 case R_PPC_EMB_RELSEC16:
9414 case R_PPC_EMB_RELST_LO:
9415 case R_PPC_EMB_RELST_HI:
9416 case R_PPC_EMB_RELST_HA:
9417 case R_PPC_EMB_BIT_FLD:
9418 /* xgettext:c-format */
9419 _bfd_error_handler (_("%pB: %s unsupported"),
9420 input_bfd, howto->name);
9422 bfd_set_error (bfd_error_invalid_operation);
9427 /* Do any further special processing. */
9433 case R_PPC_ADDR16_HA:
9434 case R_PPC_REL16_HA:
9435 case R_PPC_REL16DX_HA:
9436 case R_PPC_SECTOFF_HA:
9437 case R_PPC_TPREL16_HA:
9438 case R_PPC_DTPREL16_HA:
9439 case R_PPC_EMB_NADDR16_HA:
9440 case R_PPC_EMB_RELST_HA:
9441 /* It's just possible that this symbol is a weak symbol
9442 that's not actually defined anywhere. In that case,
9443 'sec' would be NULL, and we should leave the symbol
9444 alone (it will be set to zero elsewhere in the link). */
9449 case R_PPC_PLT16_HA:
9450 case R_PPC_GOT16_HA:
9451 case R_PPC_GOT_TLSGD16_HA:
9452 case R_PPC_GOT_TLSLD16_HA:
9453 case R_PPC_GOT_TPREL16_HA:
9454 case R_PPC_GOT_DTPREL16_HA:
9455 /* Add 0x10000 if sign bit in 0:15 is set.
9456 Bits 0:15 are not used. */
9461 case R_PPC_ADDR16_LO:
9463 case R_PPC_GOT16_LO:
9464 case R_PPC_SDAREL16:
9466 case R_PPC_SECTOFF_LO:
9467 case R_PPC_DTPREL16:
9468 case R_PPC_DTPREL16_LO:
9470 case R_PPC_TPREL16_LO:
9471 case R_PPC_GOT_TLSGD16:
9472 case R_PPC_GOT_TLSGD16_LO:
9473 case R_PPC_GOT_TLSLD16:
9474 case R_PPC_GOT_TLSLD16_LO:
9475 case R_PPC_GOT_DTPREL16:
9476 case R_PPC_GOT_DTPREL16_LO:
9477 case R_PPC_GOT_TPREL16:
9478 case R_PPC_GOT_TPREL16_LO:
9480 /* The 32-bit ABI lacks proper relocations to deal with
9481 certain 64-bit instructions. Prevent damage to bits
9482 that make up part of the insn opcode. */
9483 unsigned int insn, mask, lobit;
9485 insn = bfd_get_32 (input_bfd,
9486 contents + rel->r_offset - d_offset);
9488 if (is_insn_ds_form (insn))
9490 else if (is_insn_dq_form (insn))
9494 relocation += addend;
9495 addend = insn & mask;
9496 lobit = mask & relocation;
9499 relocation ^= lobit;
9500 info->callbacks->einfo
9501 /* xgettext:c-format */
9502 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9503 input_bfd, input_section, rel->r_offset,
9504 howto->name, sym_name, mask + 1);
9505 bfd_set_error (bfd_error_bad_value);
9513 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9514 "offset = %ld, addend = %ld\n",
9519 (long) rel->r_offset,
9523 if (unresolved_reloc
9524 && !((input_section->flags & SEC_DEBUGGING) != 0
9526 && _bfd_elf_section_offset (output_bfd, info, input_section,
9527 rel->r_offset) != (bfd_vma) -1)
9529 info->callbacks->einfo
9530 /* xgettext:c-format */
9531 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9532 input_bfd, input_section, rel->r_offset,
9538 /* 16-bit fields in insns mostly have signed values, but a
9539 few insns have 16-bit unsigned values. Really, we should
9540 have different reloc types. */
9541 if (howto->complain_on_overflow != complain_overflow_dont
9542 && howto->dst_mask == 0xffff
9543 && (input_section->flags & SEC_CODE) != 0)
9545 enum complain_overflow complain = complain_overflow_signed;
9547 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9551 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9552 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9553 complain = complain_overflow_bitfield;
9554 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9555 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9556 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9557 complain = complain_overflow_unsigned;
9559 if (howto->complain_on_overflow != complain)
9562 alt_howto.complain_on_overflow = complain;
9567 if (r_type == R_PPC_REL16DX_HA)
9569 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9570 if (rel->r_offset + 4 > input_section->size)
9571 r = bfd_reloc_outofrange;
9576 relocation += addend;
9577 relocation -= (rel->r_offset
9578 + input_section->output_offset
9579 + input_section->output_section->vma);
9581 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9583 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9584 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9589 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9590 rel->r_offset, relocation, addend);
9592 if (r != bfd_reloc_ok)
9594 if (r == bfd_reloc_overflow)
9597 /* On code like "if (foo) foo();" don't report overflow
9598 on a branch to zero when foo is undefined. */
9601 && (h->root.type == bfd_link_hash_undefweak
9602 || h->root.type == bfd_link_hash_undefined)
9603 && is_branch_reloc (r_type)))
9604 info->callbacks->reloc_overflow
9605 (info, (h ? &h->root : NULL), sym_name, howto->name,
9606 rel->r_addend, input_bfd, input_section, rel->r_offset);
9610 info->callbacks->einfo
9611 /* xgettext:c-format */
9612 (_("%H: %s reloc against `%s': error %d\n"),
9613 input_bfd, input_section, rel->r_offset,
9614 howto->name, sym_name, (int) r);
9625 Elf_Internal_Shdr *rel_hdr;
9626 size_t deleted = rel - wrel;
9628 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9629 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9630 if (rel_hdr->sh_size == 0)
9632 /* It is too late to remove an empty reloc section. Leave
9634 ??? What is wrong with an empty section??? */
9635 rel_hdr->sh_size = rel_hdr->sh_entsize;
9640 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9641 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9642 input_section->reloc_count -= deleted;
9646 fprintf (stderr, "\n");
9649 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9650 && input_section->size != input_section->rawsize
9651 && (strcmp (input_section->output_section->name, ".init") == 0
9652 || strcmp (input_section->output_section->name, ".fini") == 0))
9654 /* Branch around the trampolines. */
9655 unsigned int insn = B + input_section->size - input_section->rawsize;
9656 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9659 if (htab->params->ppc476_workaround
9660 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9661 && (!bfd_link_relocatable (info)
9662 || (input_section->output_section->alignment_power
9663 >= htab->params->pagesize_p2)))
9665 bfd_vma start_addr, end_addr, addr;
9666 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9668 if (relax_info->workaround_size != 0)
9674 bfd_put_32 (input_bfd, BA, fill);
9675 p = contents + input_section->size - relax_info->workaround_size;
9676 n = relax_info->workaround_size >> 2;
9679 memcpy (p, fill, 4);
9684 /* The idea is: Replace the last instruction on a page with a
9685 branch to a patch area. Put the insn there followed by a
9686 branch back to the next page. Complicated a little by
9687 needing to handle moved conditional branches, and by not
9688 wanting to touch data-in-text. */
9690 start_addr = (input_section->output_section->vma
9691 + input_section->output_offset);
9692 end_addr = (start_addr + input_section->size
9693 - relax_info->workaround_size);
9694 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9698 bfd_vma offset = addr - start_addr;
9699 Elf_Internal_Rela *lo, *hi;
9700 bfd_boolean is_data;
9701 bfd_vma patch_off, patch_addr;
9704 /* Do we have a data reloc at this offset? If so, leave
9712 rel = lo + (hi - lo) / 2;
9713 if (rel->r_offset < offset)
9715 else if (rel->r_offset > offset + 3)
9719 switch (ELF32_R_TYPE (rel->r_info))
9736 /* Some instructions can be left alone too. Unconditional
9737 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9738 avoid the icache failure.
9740 The problem occurs due to prefetch across a page boundary
9741 where stale instructions can be fetched from the next
9742 page, and the mechanism for flushing these bad
9743 instructions fails under certain circumstances. The
9744 unconditional branches:
9745 1) Branch: b, bl, ba, bla,
9746 2) Branch Conditional: bc, bca, bcl, bcla,
9747 3) Branch Conditional to Link Register: bclr, bclrl,
9748 where (2) and (3) have BO=0x14 making them unconditional,
9749 prevent the bad prefetch because the prefetch itself is
9750 affected by these instructions. This happens even if the
9751 instruction is not executed.
9756 . addi 9,9,new_page@l
9763 The bctr is not predicted taken due to ctr not being
9764 ready, so prefetch continues on past the bctr into the
9765 new page which might have stale instructions. If they
9766 fail to be flushed, then they will be executed after the
9767 bctr executes. Either of the following modifications
9768 prevent the bad prefetch from happening in the first
9771 . lis 9,new_page@ha lis 9,new_page@ha
9772 . addi 9,9,new_page@l addi 9,9,new_page@l
9775 . nop b somewhere_else
9776 . b somewhere_else nop
9777 . new_page: new_page:
9779 insn = bfd_get_32 (input_bfd, contents + offset);
9780 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9781 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9782 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9783 || ((insn & (0x3f << 26)) == (19u << 26)
9784 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9785 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9788 patch_addr = (start_addr + input_section->size
9789 - relax_info->workaround_size);
9790 patch_addr = (patch_addr + 15) & -16;
9791 patch_off = patch_addr - start_addr;
9792 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9795 && rel->r_offset >= offset
9796 && rel->r_offset < offset + 4)
9800 /* If the insn we are patching had a reloc, adjust the
9801 reloc r_offset so that the reloc applies to the moved
9802 location. This matters for -r and --emit-relocs. */
9803 if (rel + 1 != relend)
9805 Elf_Internal_Rela tmp = *rel;
9807 /* Keep the relocs sorted by r_offset. */
9808 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9811 relend[-1].r_offset += patch_off - offset;
9813 /* Adjust REL16 addends too. */
9814 switch (ELF32_R_TYPE (relend[-1].r_info))
9817 case R_PPC_REL16_LO:
9818 case R_PPC_REL16_HI:
9819 case R_PPC_REL16_HA:
9820 relend[-1].r_addend += patch_off - offset;
9826 /* If we are building a PIE or shared library with
9827 non-PIC objects, perhaps we had a dynamic reloc too?
9828 If so, the dynamic reloc must move with the insn. */
9829 sreloc = elf_section_data (input_section)->sreloc;
9832 Elf32_External_Rela *slo, *shi, *srelend;
9835 slo = (Elf32_External_Rela *) sreloc->contents;
9836 shi = srelend = slo + sreloc->reloc_count;
9837 soffset = (offset + input_section->output_section->vma
9838 + input_section->output_offset);
9841 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9842 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9844 if (outrel.r_offset < soffset)
9846 else if (outrel.r_offset > soffset + 3)
9850 if (srel + 1 != srelend)
9852 memmove (srel, srel + 1,
9853 (srelend - (srel + 1)) * sizeof (*srel));
9856 outrel.r_offset += patch_off - offset;
9857 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9867 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9868 && (insn & 2) == 0 /* relative */)
9870 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9872 delta += offset - patch_off;
9873 if (bfd_link_relocatable (info) && rel != NULL)
9875 if (!bfd_link_relocatable (info) && rel != NULL)
9877 enum elf_ppc_reloc_type r_type;
9879 r_type = ELF32_R_TYPE (relend[-1].r_info);
9880 if (r_type == R_PPC_REL14_BRTAKEN)
9881 insn |= BRANCH_PREDICT_BIT;
9882 else if (r_type == R_PPC_REL14_BRNTAKEN)
9883 insn &= ~BRANCH_PREDICT_BIT;
9885 BFD_ASSERT (r_type == R_PPC_REL14);
9887 if ((r_type == R_PPC_REL14_BRTAKEN
9888 || r_type == R_PPC_REL14_BRNTAKEN)
9889 && delta + 0x8000 < 0x10000
9890 && (bfd_signed_vma) delta < 0)
9891 insn ^= BRANCH_PREDICT_BIT;
9893 if (delta + 0x8000 < 0x10000)
9895 bfd_put_32 (input_bfd,
9896 (insn & ~0xfffc) | (delta & 0xfffc),
9897 contents + patch_off);
9899 bfd_put_32 (input_bfd,
9900 B | ((offset + 4 - patch_off) & 0x3fffffc),
9901 contents + patch_off);
9908 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9910 relend[-1].r_offset += 8;
9911 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9913 bfd_put_32 (input_bfd,
9914 (insn & ~0xfffc) | 8,
9915 contents + patch_off);
9917 bfd_put_32 (input_bfd,
9918 B | ((offset + 4 - patch_off) & 0x3fffffc),
9919 contents + patch_off);
9921 bfd_put_32 (input_bfd,
9922 B | ((delta - 8) & 0x3fffffc),
9923 contents + patch_off);
9929 bfd_put_32 (input_bfd, insn, contents + patch_off);
9931 bfd_put_32 (input_bfd,
9932 B | ((offset + 4 - patch_off) & 0x3fffffc),
9933 contents + patch_off);
9936 BFD_ASSERT (patch_off <= input_section->size);
9937 relax_info->workaround_size = input_section->size - patch_off;
9944 /* Finish up dynamic symbol handling. We set the contents of various
9945 dynamic sections here. */
9948 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9949 struct bfd_link_info *info,
9950 struct elf_link_hash_entry *h,
9951 Elf_Internal_Sym *sym)
9953 struct ppc_elf_link_hash_table *htab;
9954 struct plt_entry *ent;
9955 bfd_boolean doneone;
9958 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9959 h->root.root.string);
9962 htab = ppc_elf_hash_table (info);
9963 BFD_ASSERT (htab->elf.dynobj != NULL);
9966 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9967 if (ent->plt.offset != (bfd_vma) -1)
9971 Elf_Internal_Rela rela;
9973 bfd_vma reloc_index;
9975 if (htab->plt_type == PLT_NEW
9976 || !htab->elf.dynamic_sections_created
9977 || h->dynindx == -1)
9978 reloc_index = ent->plt.offset / 4;
9981 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9982 / htab->plt_slot_size);
9983 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9984 && htab->plt_type == PLT_OLD)
9985 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9988 /* This symbol has an entry in the procedure linkage table.
9990 if (htab->plt_type == PLT_VXWORKS
9991 && htab->elf.dynamic_sections_created
9992 && h->dynindx != -1)
9995 const bfd_vma *plt_entry;
9997 /* The first three entries in .got.plt are reserved. */
9998 got_offset = (reloc_index + 3) * 4;
10000 /* Use the right PLT. */
10001 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10002 : ppc_elf_vxworks_plt_entry;
10004 /* Fill in the .plt on VxWorks. */
10005 if (bfd_link_pic (info))
10007 bfd_put_32 (output_bfd,
10008 plt_entry[0] | PPC_HA (got_offset),
10009 htab->elf.splt->contents + ent->plt.offset + 0);
10010 bfd_put_32 (output_bfd,
10011 plt_entry[1] | PPC_LO (got_offset),
10012 htab->elf.splt->contents + ent->plt.offset + 4);
10016 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10018 bfd_put_32 (output_bfd,
10019 plt_entry[0] | PPC_HA (got_loc),
10020 htab->elf.splt->contents + ent->plt.offset + 0);
10021 bfd_put_32 (output_bfd,
10022 plt_entry[1] | PPC_LO (got_loc),
10023 htab->elf.splt->contents + ent->plt.offset + 4);
10026 bfd_put_32 (output_bfd, plt_entry[2],
10027 htab->elf.splt->contents + ent->plt.offset + 8);
10028 bfd_put_32 (output_bfd, plt_entry[3],
10029 htab->elf.splt->contents + ent->plt.offset + 12);
10031 /* This instruction is an immediate load. The value loaded is
10032 the byte offset of the R_PPC_JMP_SLOT relocation from the
10033 start of the .rela.plt section. The value is stored in the
10034 low-order 16 bits of the load instruction. */
10035 /* NOTE: It appears that this is now an index rather than a
10036 prescaled offset. */
10037 bfd_put_32 (output_bfd,
10038 plt_entry[4] | reloc_index,
10039 htab->elf.splt->contents + ent->plt.offset + 16);
10040 /* This instruction is a PC-relative branch whose target is
10041 the start of the PLT section. The address of this branch
10042 instruction is 20 bytes beyond the start of this PLT entry.
10043 The address is encoded in bits 6-29, inclusive. The value
10044 stored is right-shifted by two bits, permitting a 26-bit
10046 bfd_put_32 (output_bfd,
10048 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10049 htab->elf.splt->contents + ent->plt.offset + 20);
10050 bfd_put_32 (output_bfd, plt_entry[6],
10051 htab->elf.splt->contents + ent->plt.offset + 24);
10052 bfd_put_32 (output_bfd, plt_entry[7],
10053 htab->elf.splt->contents + ent->plt.offset + 28);
10055 /* Fill in the GOT entry corresponding to this PLT slot with
10056 the address immediately after the "bctr" instruction
10057 in this PLT entry. */
10058 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10059 + htab->elf.splt->output_offset
10060 + ent->plt.offset + 16),
10061 htab->elf.sgotplt->contents + got_offset);
10063 if (!bfd_link_pic (info))
10065 /* Fill in a couple of entries in .rela.plt.unloaded. */
10066 loc = htab->srelplt2->contents
10067 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10068 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10069 * sizeof (Elf32_External_Rela));
10071 /* Provide the @ha relocation for the first instruction. */
10072 rela.r_offset = (htab->elf.splt->output_section->vma
10073 + htab->elf.splt->output_offset
10074 + ent->plt.offset + 2);
10075 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10077 rela.r_addend = got_offset;
10078 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10079 loc += sizeof (Elf32_External_Rela);
10081 /* Provide the @l relocation for the second instruction. */
10082 rela.r_offset = (htab->elf.splt->output_section->vma
10083 + htab->elf.splt->output_offset
10084 + ent->plt.offset + 6);
10085 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10087 rela.r_addend = got_offset;
10088 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10089 loc += sizeof (Elf32_External_Rela);
10091 /* Provide a relocation for the GOT entry corresponding to this
10092 PLT slot. Point it at the middle of the .plt entry. */
10093 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10094 + htab->elf.sgotplt->output_offset
10096 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10098 rela.r_addend = ent->plt.offset + 16;
10099 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10102 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10103 In particular, the offset for the relocation is not the
10104 address of the PLT entry for this function, as specified
10105 by the ABI. Instead, the offset is set to the address of
10106 the GOT slot for this function. See EABI 4.4.4.1. */
10107 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10108 + htab->elf.sgotplt->output_offset
10114 asection *splt = htab->elf.splt;
10115 if (!htab->elf.dynamic_sections_created
10116 || h->dynindx == -1)
10117 splt = htab->elf.iplt;
10119 rela.r_offset = (splt->output_section->vma
10120 + splt->output_offset
10121 + ent->plt.offset);
10122 if (htab->plt_type == PLT_OLD
10123 || !htab->elf.dynamic_sections_created
10124 || h->dynindx == -1)
10126 /* We don't need to fill in the .plt. The ppc dynamic
10127 linker will fill it in. */
10131 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10132 + htab->glink->output_section->vma
10133 + htab->glink->output_offset);
10134 bfd_put_32 (output_bfd, val,
10135 splt->contents + ent->plt.offset);
10139 /* Fill in the entry in the .rela.plt section. */
10141 if (!htab->elf.dynamic_sections_created
10142 || h->dynindx == -1)
10144 BFD_ASSERT (h->type == STT_GNU_IFUNC
10146 && (h->root.type == bfd_link_hash_defined
10147 || h->root.type == bfd_link_hash_defweak));
10148 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10149 rela.r_addend = SYM_VAL (h);
10152 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10154 if (!htab->elf.dynamic_sections_created
10155 || h->dynindx == -1)
10157 loc = (htab->elf.irelplt->contents
10158 + (htab->elf.irelplt->reloc_count++
10159 * sizeof (Elf32_External_Rela)));
10160 htab->local_ifunc_resolver = 1;
10164 loc = (htab->elf.srelplt->contents
10165 + reloc_index * sizeof (Elf32_External_Rela));
10166 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10167 htab->maybe_local_ifunc_resolver = 1;
10169 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10171 if (!h->def_regular)
10173 /* Mark the symbol as undefined, rather than as
10174 defined in the .plt section. Leave the value if
10175 there were any relocations where pointer equality
10176 matters (this is a clue for the dynamic linker, to
10177 make function pointer comparisons work between an
10178 application and shared library), otherwise set it
10180 sym->st_shndx = SHN_UNDEF;
10181 if (!h->pointer_equality_needed)
10183 else if (!h->ref_regular_nonweak)
10185 /* This breaks function pointer comparisons, but
10186 that is better than breaking tests for a NULL
10187 function pointer. */
10191 else if (h->type == STT_GNU_IFUNC
10192 && !bfd_link_pic (info))
10194 /* Set the value of ifunc symbols in a non-pie
10195 executable to the glink entry. This is to avoid
10196 text relocations. We can't do this for ifunc in
10197 allocate_dynrelocs, as we do for normal dynamic
10198 function symbols with plt entries, because we need
10199 to keep the original value around for the ifunc
10201 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10202 (output_bfd, htab->glink->output_section));
10203 sym->st_value = (ent->glink_offset
10204 + htab->glink->output_offset
10205 + htab->glink->output_section->vma);
10210 if (htab->plt_type == PLT_NEW
10211 || !htab->elf.dynamic_sections_created
10212 || h->dynindx == -1)
10215 asection *splt = htab->elf.splt;
10217 if (!htab->elf.dynamic_sections_created
10218 || h->dynindx == -1)
10219 splt = htab->elf.iplt;
10221 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10222 write_glink_stub (h, ent, splt, p, info);
10224 if (!bfd_link_pic (info))
10225 /* We only need one non-PIC glink stub. */
10235 Elf_Internal_Rela rela;
10238 /* This symbols needs a copy reloc. Set it up. */
10241 fprintf (stderr, ", copy");
10244 BFD_ASSERT (h->dynindx != -1);
10246 if (ppc_elf_hash_entry (h)->has_sda_refs)
10248 else if (h->root.u.def.section == htab->elf.sdynrelro)
10249 s = htab->elf.sreldynrelro;
10251 s = htab->elf.srelbss;
10252 BFD_ASSERT (s != NULL);
10254 rela.r_offset = SYM_VAL (h);
10255 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10257 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10258 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10262 fprintf (stderr, "\n");
10268 static enum elf_reloc_type_class
10269 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10270 const asection *rel_sec,
10271 const Elf_Internal_Rela *rela)
10273 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10275 if (rel_sec == htab->elf.irelplt)
10276 return reloc_class_ifunc;
10278 switch (ELF32_R_TYPE (rela->r_info))
10280 case R_PPC_RELATIVE:
10281 return reloc_class_relative;
10282 case R_PPC_JMP_SLOT:
10283 return reloc_class_plt;
10285 return reloc_class_copy;
10287 return reloc_class_normal;
10291 /* Finish up the dynamic sections. */
10294 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10295 struct bfd_link_info *info)
10298 struct ppc_elf_link_hash_table *htab;
10301 bfd_boolean ret = TRUE;
10304 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10307 htab = ppc_elf_hash_table (info);
10308 dynobj = htab->elf.dynobj;
10309 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10312 if (htab->elf.hgot != NULL)
10313 got = SYM_VAL (htab->elf.hgot);
10315 if (htab->elf.dynamic_sections_created)
10317 Elf32_External_Dyn *dyncon, *dynconend;
10319 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10321 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10322 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10323 for (; dyncon < dynconend; dyncon++)
10325 Elf_Internal_Dyn dyn;
10328 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10333 if (htab->is_vxworks)
10334 s = htab->elf.sgotplt;
10336 s = htab->elf.splt;
10337 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10341 dyn.d_un.d_val = htab->elf.srelplt->size;
10345 s = htab->elf.srelplt;
10346 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10350 dyn.d_un.d_ptr = got;
10354 if (htab->local_ifunc_resolver)
10355 info->callbacks->einfo
10356 (_("%X%P: text relocations and GNU indirect "
10357 "functions will result in a segfault at runtime\n"));
10358 else if (htab->maybe_local_ifunc_resolver)
10359 info->callbacks->einfo
10360 (_("%P: warning: text relocations and GNU indirect "
10361 "functions may result in a segfault at runtime\n"));
10365 if (htab->is_vxworks
10366 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10371 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10375 if (htab->elf.sgot != NULL
10376 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10378 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10379 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10381 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10383 p += htab->elf.hgot->root.u.def.value;
10384 if (htab->plt_type == PLT_OLD)
10386 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10387 so that a function can easily find the address of
10388 _GLOBAL_OFFSET_TABLE_. */
10389 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10390 < htab->elf.hgot->root.u.def.section->size);
10391 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10396 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10397 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10398 < htab->elf.hgot->root.u.def.section->size);
10399 bfd_put_32 (output_bfd, val, p);
10404 /* xgettext:c-format */
10405 _bfd_error_handler (_("%s not defined in linker created %pA"),
10406 htab->elf.hgot->root.root.string,
10407 (htab->elf.sgotplt != NULL
10408 ? htab->elf.sgotplt : htab->elf.sgot));
10409 bfd_set_error (bfd_error_bad_value);
10413 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10416 /* Fill in the first entry in the VxWorks procedure linkage table. */
10417 if (htab->is_vxworks
10418 && htab->elf.splt != NULL
10419 && htab->elf.splt->size != 0
10420 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10422 asection *splt = htab->elf.splt;
10423 /* Use the right PLT. */
10424 const bfd_vma *plt_entry = (bfd_link_pic (info)
10425 ? ppc_elf_vxworks_pic_plt0_entry
10426 : ppc_elf_vxworks_plt0_entry);
10428 if (!bfd_link_pic (info))
10430 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10432 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10433 splt->contents + 0);
10434 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10435 splt->contents + 4);
10439 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10440 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10442 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10443 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10444 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10445 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10446 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10447 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10449 if (! bfd_link_pic (info))
10451 Elf_Internal_Rela rela;
10454 loc = htab->srelplt2->contents;
10456 /* Output the @ha relocation for the first instruction. */
10457 rela.r_offset = (htab->elf.splt->output_section->vma
10458 + htab->elf.splt->output_offset
10460 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10462 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10463 loc += sizeof (Elf32_External_Rela);
10465 /* Output the @l relocation for the second instruction. */
10466 rela.r_offset = (htab->elf.splt->output_section->vma
10467 + htab->elf.splt->output_offset
10469 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10471 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10472 loc += sizeof (Elf32_External_Rela);
10474 /* Fix up the remaining relocations. They may have the wrong
10475 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10476 in which symbols were output. */
10477 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10479 Elf_Internal_Rela rel;
10481 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10482 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10483 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10484 loc += sizeof (Elf32_External_Rela);
10486 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10487 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10488 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10489 loc += sizeof (Elf32_External_Rela);
10491 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10492 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10493 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10494 loc += sizeof (Elf32_External_Rela);
10499 if (htab->glink != NULL
10500 && htab->glink->contents != NULL
10501 && htab->elf.dynamic_sections_created)
10504 unsigned char *endp;
10508 * PIC glink code is the following:
10510 * # ith PLT code stub.
10511 * addis 11,30,(plt+(i-1)*4-got)@ha
10512 * lwz 11,(plt+(i-1)*4-got)@l(11)
10516 * # A table of branches, one for each plt entry.
10517 * # The idea is that the plt call stub loads ctr and r11 with these
10518 * # addresses, so (r11 - res_0) gives the plt index * 4.
10519 * res_0: b PLTresolve
10520 * res_1: b PLTresolve
10522 * # Some number of entries towards the end can be nops
10528 * addis 11,11,(1f-res_0)@ha
10531 * 1: addi 11,11,(1b-res_0)@l
10534 * sub 11,11,12 # r11 = index * 4
10535 * addis 12,12,(got+4-1b)@ha
10536 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10537 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10540 * add 11,0,11 # r11 = index * 12 = reloc offset.
10543 * Non-PIC glink code is a little simpler.
10545 * # ith PLT code stub.
10546 * lis 11,(plt+(i-1)*4)@ha
10547 * lwz 11,(plt+(i-1)*4)@l(11)
10551 * The branch table is the same, then comes
10554 * lis 12,(got+4)@ha
10555 * addis 11,11,(-res_0)@ha
10556 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10557 * addi 11,11,(-res_0)@l # r11 = index * 4
10560 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10561 * add 11,0,11 # r11 = index * 12 = reloc offset.
10565 /* Build the branch table, one for each plt entry (less one),
10566 and perhaps some padding. */
10567 p = htab->glink->contents;
10568 p += htab->glink_pltresolve;
10569 endp = htab->glink->contents;
10570 endp += htab->glink->size - GLINK_PLTRESOLVE;
10571 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10573 bfd_put_32 (output_bfd, B + endp - p, p);
10578 bfd_put_32 (output_bfd, NOP, p);
10582 res0 = (htab->glink_pltresolve
10583 + htab->glink->output_section->vma
10584 + htab->glink->output_offset);
10586 if (htab->params->ppc476_workaround)
10588 /* Ensure that a call stub at the end of a page doesn't
10589 result in prefetch over the end of the page into the
10590 glink branch table. */
10591 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10593 bfd_vma glink_start = (htab->glink->output_section->vma
10594 + htab->glink->output_offset);
10596 for (page_addr = res0 & -pagesize;
10597 page_addr > glink_start;
10598 page_addr -= pagesize)
10600 /* We have a plt call stub that may need fixing. */
10604 loc = htab->glink->contents + page_addr - 4 - glink_start;
10605 insn = bfd_get_32 (output_bfd, loc);
10608 /* By alignment, we know that there must be at least
10609 one other call stub before this one. */
10610 insn = bfd_get_32 (output_bfd, loc - 16);
10612 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10614 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10619 /* Last comes the PLTresolve stub. */
10620 endp = p + GLINK_PLTRESOLVE;
10621 if (bfd_link_pic (info))
10625 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10626 + htab->glink->output_section->vma
10627 + htab->glink->output_offset);
10629 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
10631 bfd_put_32 (output_bfd, MFLR_0, p);
10633 bfd_put_32 (output_bfd, BCL_20_31, p);
10635 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
10637 bfd_put_32 (output_bfd, MFLR_12, p);
10639 bfd_put_32 (output_bfd, MTLR_0, p);
10641 bfd_put_32 (output_bfd, SUB_11_11_12, p);
10643 bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
10645 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10647 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
10649 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
10654 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
10656 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10659 bfd_put_32 (output_bfd, MTCTR_0, p);
10661 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10665 bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
10667 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
10669 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10670 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
10672 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
10674 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
10676 bfd_put_32 (output_bfd, MTCTR_0, p);
10678 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10680 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10681 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
10683 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10686 bfd_put_32 (output_bfd, ADD_11_0_11, p);
10688 bfd_put_32 (output_bfd, BCTR, p);
10692 bfd_put_32 (output_bfd,
10693 htab->params->ppc476_workaround ? BA : NOP, p);
10696 BFD_ASSERT (p == endp);
10699 if (htab->glink_eh_frame != NULL
10700 && htab->glink_eh_frame->contents != NULL)
10702 unsigned char *p = htab->glink_eh_frame->contents;
10705 p += sizeof (glink_eh_frame_cie);
10710 /* Offset to .glink. */
10711 val = (htab->glink->output_section->vma
10712 + htab->glink->output_offset);
10713 val -= (htab->glink_eh_frame->output_section->vma
10714 + htab->glink_eh_frame->output_offset);
10715 val -= p - htab->glink_eh_frame->contents;
10716 bfd_put_32 (htab->elf.dynobj, val, p);
10718 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10719 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10720 htab->glink_eh_frame,
10721 htab->glink_eh_frame->contents))
10728 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10729 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10730 #define TARGET_BIG_SYM powerpc_elf32_vec
10731 #define TARGET_BIG_NAME "elf32-powerpc"
10732 #define ELF_ARCH bfd_arch_powerpc
10733 #define ELF_TARGET_ID PPC32_ELF_DATA
10734 #define ELF_MACHINE_CODE EM_PPC
10735 #ifdef __QNXTARGET__
10736 #define ELF_MAXPAGESIZE 0x1000
10737 #define ELF_COMMONPAGESIZE 0x1000
10739 #define ELF_MAXPAGESIZE 0x10000
10740 #define ELF_COMMONPAGESIZE 0x10000
10742 #define ELF_MINPAGESIZE 0x1000
10743 #define elf_info_to_howto ppc_elf_info_to_howto
10745 #ifdef EM_CYGNUS_POWERPC
10746 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10750 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10753 #define elf_backend_plt_not_loaded 1
10754 #define elf_backend_want_dynrelro 1
10755 #define elf_backend_can_gc_sections 1
10756 #define elf_backend_can_refcount 1
10757 #define elf_backend_rela_normal 1
10758 #define elf_backend_caches_rawsize 1
10760 #define bfd_elf32_mkobject ppc_elf_mkobject
10761 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10762 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10763 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10764 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10765 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10766 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10767 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10769 #define elf_backend_object_p ppc_elf_object_p
10770 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10771 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10772 #define elf_backend_relocate_section ppc_elf_relocate_section
10773 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10774 #define elf_backend_check_relocs ppc_elf_check_relocs
10775 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10776 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10777 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10778 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10779 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10780 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10781 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10782 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10783 #define elf_backend_fake_sections ppc_elf_fake_sections
10784 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10785 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10786 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10787 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10788 #define elf_backend_write_core_note ppc_elf_write_core_note
10789 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10790 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10791 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10792 #define elf_backend_write_section ppc_elf_write_section
10793 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10794 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10795 #define elf_backend_action_discarded ppc_elf_action_discarded
10796 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10797 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10799 #include "elf32-target.h"
10801 /* FreeBSD Target */
10803 #undef TARGET_LITTLE_SYM
10804 #undef TARGET_LITTLE_NAME
10806 #undef TARGET_BIG_SYM
10807 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10808 #undef TARGET_BIG_NAME
10809 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10812 #define ELF_OSABI ELFOSABI_FREEBSD
10815 #define elf32_bed elf32_powerpc_fbsd_bed
10817 #include "elf32-target.h"
10819 /* VxWorks Target */
10821 #undef TARGET_LITTLE_SYM
10822 #undef TARGET_LITTLE_NAME
10824 #undef TARGET_BIG_SYM
10825 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10826 #undef TARGET_BIG_NAME
10827 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10831 /* VxWorks uses the elf default section flags for .plt. */
10832 static const struct bfd_elf_special_section *
10833 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10835 if (sec->name == NULL)
10838 if (strcmp (sec->name, ".plt") == 0)
10839 return _bfd_elf_get_sec_type_attr (abfd, sec);
10841 return ppc_elf_get_sec_type_attr (abfd, sec);
10844 /* Like ppc_elf_link_hash_table_create, but overrides
10845 appropriately for VxWorks. */
10846 static struct bfd_link_hash_table *
10847 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10849 struct bfd_link_hash_table *ret;
10851 ret = ppc_elf_link_hash_table_create (abfd);
10854 struct ppc_elf_link_hash_table *htab
10855 = (struct ppc_elf_link_hash_table *)ret;
10856 htab->is_vxworks = 1;
10857 htab->plt_type = PLT_VXWORKS;
10858 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10859 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10860 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10865 /* Tweak magic VxWorks symbols as they are loaded. */
10867 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10868 struct bfd_link_info *info,
10869 Elf_Internal_Sym *sym,
10870 const char **namep,
10875 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10879 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10883 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10885 ppc_elf_final_write_processing (abfd, linker);
10886 elf_vxworks_final_write_processing (abfd, linker);
10889 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10891 #undef elf_backend_want_plt_sym
10892 #define elf_backend_want_plt_sym 1
10893 #undef elf_backend_want_got_plt
10894 #define elf_backend_want_got_plt 1
10895 #undef elf_backend_got_symbol_offset
10896 #define elf_backend_got_symbol_offset 0
10897 #undef elf_backend_plt_not_loaded
10898 #define elf_backend_plt_not_loaded 0
10899 #undef elf_backend_plt_readonly
10900 #define elf_backend_plt_readonly 1
10901 #undef elf_backend_got_header_size
10902 #define elf_backend_got_header_size 12
10903 #undef elf_backend_dtrel_excludes_plt
10904 #define elf_backend_dtrel_excludes_plt 1
10906 #undef bfd_elf32_get_synthetic_symtab
10908 #undef bfd_elf32_bfd_link_hash_table_create
10909 #define bfd_elf32_bfd_link_hash_table_create \
10910 ppc_elf_vxworks_link_hash_table_create
10911 #undef elf_backend_add_symbol_hook
10912 #define elf_backend_add_symbol_hook \
10913 ppc_elf_vxworks_add_symbol_hook
10914 #undef elf_backend_link_output_symbol_hook
10915 #define elf_backend_link_output_symbol_hook \
10916 elf_vxworks_link_output_symbol_hook
10917 #undef elf_backend_final_write_processing
10918 #define elf_backend_final_write_processing \
10919 ppc_elf_vxworks_final_write_processing
10920 #undef elf_backend_get_sec_type_attr
10921 #define elf_backend_get_sec_type_attr \
10922 ppc_elf_vxworks_get_sec_type_attr
10923 #undef elf_backend_emit_relocs
10924 #define elf_backend_emit_relocs \
10925 elf_vxworks_emit_relocs
10928 #define elf32_bed ppc_elf_vxworks_bed
10929 #undef elf_backend_post_process_headers
10931 #include "elf32-target.h"