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 (_("%B: unrecognised PPC reloc number: %d"),
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 (_("%B: invalid relocation type %d"),
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 %B");
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 %B");
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 %B");
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);
3478 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3479 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3480 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3483 || !bfd_set_section_alignment (abfd, s,
3484 htab->params->ppc476_workaround ? 6 : 4))
3487 if (!info->no_ld_generated_unwind_info)
3489 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3490 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3491 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3492 htab->glink_eh_frame = s;
3494 || !bfd_set_section_alignment (abfd, s, 2))
3498 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3499 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3502 || !bfd_set_section_alignment (abfd, s, 4))
3505 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3506 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3507 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3508 htab->elf.irelplt = s;
3510 || ! bfd_set_section_alignment (abfd, s, 2))
3513 if (!ppc_elf_create_linker_section (abfd, info, 0,
3517 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3524 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3525 to output sections (just like _bfd_elf_create_dynamic_sections has
3526 to create .dynbss and .rela.bss). */
3529 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3531 struct ppc_elf_link_hash_table *htab;
3535 htab = ppc_elf_hash_table (info);
3537 if (htab->elf.sgot == NULL
3538 && !ppc_elf_create_got (abfd, info))
3541 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3544 if (htab->glink == NULL
3545 && !ppc_elf_create_glink (abfd, info))
3548 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3549 SEC_ALLOC | SEC_LINKER_CREATED);
3554 if (! bfd_link_pic (info))
3556 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3557 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3558 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3561 || ! bfd_set_section_alignment (abfd, s, 2))
3565 if (htab->is_vxworks
3566 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3570 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3571 if (htab->plt_type == PLT_VXWORKS)
3572 /* The VxWorks PLT is a loaded section with contents. */
3573 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3574 return bfd_set_section_flags (abfd, s, flags);
3577 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3580 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3581 struct elf_link_hash_entry *dir,
3582 struct elf_link_hash_entry *ind)
3584 struct ppc_elf_link_hash_entry *edir, *eind;
3586 edir = (struct ppc_elf_link_hash_entry *) dir;
3587 eind = (struct ppc_elf_link_hash_entry *) ind;
3589 edir->tls_mask |= eind->tls_mask;
3590 edir->has_sda_refs |= eind->has_sda_refs;
3592 if (edir->elf.versioned != versioned_hidden)
3593 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3594 edir->elf.ref_regular |= eind->elf.ref_regular;
3595 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3596 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3597 edir->elf.needs_plt |= eind->elf.needs_plt;
3598 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3600 /* If we were called to copy over info for a weak sym, that's all. */
3601 if (eind->elf.root.type != bfd_link_hash_indirect)
3604 if (eind->dyn_relocs != NULL)
3606 if (edir->dyn_relocs != NULL)
3608 struct elf_dyn_relocs **pp;
3609 struct elf_dyn_relocs *p;
3611 /* Add reloc counts against the indirect sym to the direct sym
3612 list. Merge any entries against the same section. */
3613 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3615 struct elf_dyn_relocs *q;
3617 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3618 if (q->sec == p->sec)
3620 q->pc_count += p->pc_count;
3621 q->count += p->count;
3628 *pp = edir->dyn_relocs;
3631 edir->dyn_relocs = eind->dyn_relocs;
3632 eind->dyn_relocs = NULL;
3635 /* Copy over the GOT refcount entries that we may have already seen to
3636 the symbol which just became indirect. */
3637 edir->elf.got.refcount += eind->elf.got.refcount;
3638 eind->elf.got.refcount = 0;
3640 /* And plt entries. */
3641 if (eind->elf.plt.plist != NULL)
3643 if (edir->elf.plt.plist != NULL)
3645 struct plt_entry **entp;
3646 struct plt_entry *ent;
3648 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3650 struct plt_entry *dent;
3652 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3653 if (dent->sec == ent->sec && dent->addend == ent->addend)
3655 dent->plt.refcount += ent->plt.refcount;
3662 *entp = edir->elf.plt.plist;
3665 edir->elf.plt.plist = eind->elf.plt.plist;
3666 eind->elf.plt.plist = NULL;
3669 if (eind->elf.dynindx != -1)
3671 if (edir->elf.dynindx != -1)
3672 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3673 edir->elf.dynstr_index);
3674 edir->elf.dynindx = eind->elf.dynindx;
3675 edir->elf.dynstr_index = eind->elf.dynstr_index;
3676 eind->elf.dynindx = -1;
3677 eind->elf.dynstr_index = 0;
3681 /* Hook called by the linker routine which adds symbols from an object
3682 file. We use it to put .comm items in .sbss, and not .bss. */
3685 ppc_elf_add_symbol_hook (bfd *abfd,
3686 struct bfd_link_info *info,
3687 Elf_Internal_Sym *sym,
3688 const char **namep ATTRIBUTE_UNUSED,
3689 flagword *flagsp ATTRIBUTE_UNUSED,
3693 if (sym->st_shndx == SHN_COMMON
3694 && !bfd_link_relocatable (info)
3695 && is_ppc_elf (info->output_bfd)
3696 && sym->st_size <= elf_gp_size (abfd))
3698 /* Common symbols less than or equal to -G nn bytes are automatically
3700 struct ppc_elf_link_hash_table *htab;
3702 htab = ppc_elf_hash_table (info);
3703 if (htab->sbss == NULL)
3705 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3707 if (!htab->elf.dynobj)
3708 htab->elf.dynobj = abfd;
3710 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3713 if (htab->sbss == NULL)
3718 *valp = sym->st_size;
3721 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3722 && (abfd->flags & DYNAMIC) == 0
3723 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3724 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3729 /* Find a linker generated pointer with a given addend and type. */
3731 static elf_linker_section_pointers_t *
3732 elf_find_pointer_linker_section
3733 (elf_linker_section_pointers_t *linker_pointers,
3735 elf_linker_section_t *lsect)
3737 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3738 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3739 return linker_pointers;
3744 /* Allocate a pointer to live in a linker created section. */
3747 elf_allocate_pointer_linker_section (bfd *abfd,
3748 elf_linker_section_t *lsect,
3749 struct elf_link_hash_entry *h,
3750 const Elf_Internal_Rela *rel)
3752 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3753 elf_linker_section_pointers_t *linker_section_ptr;
3754 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3757 BFD_ASSERT (lsect != NULL);
3759 /* Is this a global symbol? */
3762 struct ppc_elf_link_hash_entry *eh;
3764 /* Has this symbol already been allocated? If so, our work is done. */
3765 eh = (struct ppc_elf_link_hash_entry *) h;
3766 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3771 ptr_linker_section_ptr = &eh->linker_section_pointer;
3775 BFD_ASSERT (is_ppc_elf (abfd));
3777 /* Allocation of a pointer to a local symbol. */
3778 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3780 /* Allocate a table to hold the local symbols if first time. */
3783 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3786 amt *= sizeof (elf_linker_section_pointers_t *);
3787 ptr = bfd_zalloc (abfd, amt);
3792 elf_local_ptr_offsets (abfd) = ptr;
3795 /* Has this symbol already been allocated? If so, our work is done. */
3796 if (elf_find_pointer_linker_section (ptr[r_symndx],
3801 ptr_linker_section_ptr = &ptr[r_symndx];
3804 /* Allocate space for a pointer in the linker section, and allocate
3805 a new pointer record from internal memory. */
3806 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3807 amt = sizeof (elf_linker_section_pointers_t);
3808 linker_section_ptr = bfd_alloc (abfd, amt);
3810 if (!linker_section_ptr)
3813 linker_section_ptr->next = *ptr_linker_section_ptr;
3814 linker_section_ptr->addend = rel->r_addend;
3815 linker_section_ptr->lsect = lsect;
3816 *ptr_linker_section_ptr = linker_section_ptr;
3818 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3820 linker_section_ptr->offset = lsect->section->size;
3821 lsect->section->size += 4;
3825 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3826 lsect->name, (long) linker_section_ptr->offset,
3827 (long) lsect->section->size);
3833 static struct plt_entry **
3834 update_local_sym_info (bfd *abfd,
3835 Elf_Internal_Shdr *symtab_hdr,
3836 unsigned long r_symndx,
3839 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3840 struct plt_entry **local_plt;
3841 char *local_got_tls_masks;
3843 if (local_got_refcounts == NULL)
3845 bfd_size_type size = symtab_hdr->sh_info;
3847 size *= (sizeof (*local_got_refcounts)
3848 + sizeof (*local_plt)
3849 + sizeof (*local_got_tls_masks));
3850 local_got_refcounts = bfd_zalloc (abfd, size);
3851 if (local_got_refcounts == NULL)
3853 elf_local_got_refcounts (abfd) = local_got_refcounts;
3856 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3857 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3858 local_got_tls_masks[r_symndx] |= tls_type;
3859 if (tls_type != PLT_IFUNC)
3860 local_got_refcounts[r_symndx] += 1;
3861 return local_plt + r_symndx;
3865 update_plt_info (bfd *abfd, struct plt_entry **plist,
3866 asection *sec, bfd_vma addend)
3868 struct plt_entry *ent;
3872 for (ent = *plist; ent != NULL; ent = ent->next)
3873 if (ent->sec == sec && ent->addend == addend)
3877 bfd_size_type amt = sizeof (*ent);
3878 ent = bfd_alloc (abfd, amt);
3883 ent->addend = addend;
3884 ent->plt.refcount = 0;
3887 ent->plt.refcount += 1;
3891 static struct plt_entry *
3892 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3894 struct plt_entry *ent;
3898 for (ent = *plist; ent != NULL; ent = ent->next)
3899 if (ent->sec == sec && ent->addend == addend)
3905 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3907 return (r_type == R_PPC_PLTREL24
3908 || r_type == R_PPC_LOCAL24PC
3909 || r_type == R_PPC_REL24
3910 || r_type == R_PPC_REL14
3911 || r_type == R_PPC_REL14_BRTAKEN
3912 || r_type == R_PPC_REL14_BRNTAKEN
3913 || r_type == R_PPC_ADDR24
3914 || r_type == R_PPC_ADDR14
3915 || r_type == R_PPC_ADDR14_BRTAKEN
3916 || r_type == R_PPC_ADDR14_BRNTAKEN
3917 || r_type == R_PPC_VLE_REL24);
3921 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3924 /* xgettext:c-format */
3925 (_("%B: relocation %s cannot be used when making a shared object"),
3927 ppc_elf_howto_table[r_type]->name);
3928 bfd_set_error (bfd_error_bad_value);
3931 /* Look through the relocs for a section during the first phase, and
3932 allocate space in the global offset table or procedure linkage
3936 ppc_elf_check_relocs (bfd *abfd,
3937 struct bfd_link_info *info,
3939 const Elf_Internal_Rela *relocs)
3941 struct ppc_elf_link_hash_table *htab;
3942 Elf_Internal_Shdr *symtab_hdr;
3943 struct elf_link_hash_entry **sym_hashes;
3944 const Elf_Internal_Rela *rel;
3945 const Elf_Internal_Rela *rel_end;
3946 asection *got2, *sreloc;
3947 struct elf_link_hash_entry *tga;
3949 if (bfd_link_relocatable (info))
3952 /* Don't do anything special with non-loaded, non-alloced sections.
3953 In particular, any relocs in such sections should not affect GOT
3954 and PLT reference counting (ie. we don't allow them to create GOT
3955 or PLT entries), there's no possibility or desire to optimize TLS
3956 relocs, and there's not much point in propagating relocs to shared
3957 libs that the dynamic linker won't relocate. */
3958 if ((sec->flags & SEC_ALLOC) == 0)
3962 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3966 BFD_ASSERT (is_ppc_elf (abfd));
3968 /* Initialize howto table if not already done. */
3969 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3970 ppc_elf_howto_init ();
3972 htab = ppc_elf_hash_table (info);
3973 if (htab->glink == NULL)
3975 if (htab->elf.dynobj == NULL)
3976 htab->elf.dynobj = abfd;
3977 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3980 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3981 FALSE, FALSE, TRUE);
3982 symtab_hdr = &elf_symtab_hdr (abfd);
3983 sym_hashes = elf_sym_hashes (abfd);
3984 got2 = bfd_get_section_by_name (abfd, ".got2");
3987 rel_end = relocs + sec->reloc_count;
3988 for (rel = relocs; rel < rel_end; rel++)
3990 unsigned long r_symndx;
3991 enum elf_ppc_reloc_type r_type;
3992 struct elf_link_hash_entry *h;
3994 struct plt_entry **ifunc;
3996 r_symndx = ELF32_R_SYM (rel->r_info);
3997 if (r_symndx < symtab_hdr->sh_info)
4001 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4002 while (h->root.type == bfd_link_hash_indirect
4003 || h->root.type == bfd_link_hash_warning)
4004 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4007 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4008 This shows up in particular in an R_PPC_ADDR32 in the eabi
4011 && htab->elf.sgot == NULL
4012 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4014 if (htab->elf.dynobj == NULL)
4015 htab->elf.dynobj = abfd;
4016 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4018 BFD_ASSERT (h == htab->elf.hgot);
4022 r_type = ELF32_R_TYPE (rel->r_info);
4024 if (h == NULL && !htab->is_vxworks)
4026 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4031 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4033 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4034 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4039 /* STT_GNU_IFUNC symbols must have a PLT entry;
4040 In a non-pie executable even when there are
4042 if (!bfd_link_pic (info)
4043 || is_branch_reloc (r_type))
4046 if (r_type == R_PPC_PLTREL24)
4048 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4049 if (bfd_link_pic (info))
4050 addend = rel->r_addend;
4052 if (!update_plt_info (abfd, ifunc, got2, addend))
4058 if (!htab->is_vxworks
4059 && is_branch_reloc (r_type)
4064 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4065 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4066 /* We have a new-style __tls_get_addr call with a marker
4070 /* Mark this section as having an old-style call. */
4071 sec->has_tls_get_addr_call = 1;
4078 /* These special tls relocs tie a call to __tls_get_addr with
4079 its parameter symbol. */
4082 case R_PPC_GOT_TLSLD16:
4083 case R_PPC_GOT_TLSLD16_LO:
4084 case R_PPC_GOT_TLSLD16_HI:
4085 case R_PPC_GOT_TLSLD16_HA:
4086 tls_type = TLS_TLS | TLS_LD;
4089 case R_PPC_GOT_TLSGD16:
4090 case R_PPC_GOT_TLSGD16_LO:
4091 case R_PPC_GOT_TLSGD16_HI:
4092 case R_PPC_GOT_TLSGD16_HA:
4093 tls_type = TLS_TLS | TLS_GD;
4096 case R_PPC_GOT_TPREL16:
4097 case R_PPC_GOT_TPREL16_LO:
4098 case R_PPC_GOT_TPREL16_HI:
4099 case R_PPC_GOT_TPREL16_HA:
4100 if (bfd_link_dll (info))
4101 info->flags |= DF_STATIC_TLS;
4102 tls_type = TLS_TLS | TLS_TPREL;
4105 case R_PPC_GOT_DTPREL16:
4106 case R_PPC_GOT_DTPREL16_LO:
4107 case R_PPC_GOT_DTPREL16_HI:
4108 case R_PPC_GOT_DTPREL16_HA:
4109 tls_type = TLS_TLS | TLS_DTPREL;
4111 sec->has_tls_reloc = 1;
4114 /* GOT16 relocations */
4116 case R_PPC_GOT16_LO:
4117 case R_PPC_GOT16_HI:
4118 case R_PPC_GOT16_HA:
4119 /* This symbol requires a global offset table entry. */
4120 if (htab->elf.sgot == NULL)
4122 if (htab->elf.dynobj == NULL)
4123 htab->elf.dynobj = abfd;
4124 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4129 h->got.refcount += 1;
4130 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4133 /* This is a global offset table entry for a local symbol. */
4134 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4137 /* We may also need a plt entry if the symbol turns out to be
4139 if (h != NULL && !bfd_link_pic (info))
4141 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4146 /* Indirect .sdata relocation. */
4147 case R_PPC_EMB_SDAI16:
4148 if (bfd_link_pic (info))
4150 bad_shared_reloc (abfd, r_type);
4153 htab->sdata[0].sym->ref_regular = 1;
4154 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4159 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4160 h->non_got_ref = TRUE;
4164 /* Indirect .sdata2 relocation. */
4165 case R_PPC_EMB_SDA2I16:
4166 if (bfd_link_pic (info))
4168 bad_shared_reloc (abfd, r_type);
4171 htab->sdata[1].sym->ref_regular = 1;
4172 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4177 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4178 h->non_got_ref = TRUE;
4182 case R_PPC_SDAREL16:
4183 htab->sdata[0].sym->ref_regular = 1;
4186 case R_PPC_VLE_SDAREL_LO16A:
4187 case R_PPC_VLE_SDAREL_LO16D:
4188 case R_PPC_VLE_SDAREL_HI16A:
4189 case R_PPC_VLE_SDAREL_HI16D:
4190 case R_PPC_VLE_SDAREL_HA16A:
4191 case R_PPC_VLE_SDAREL_HA16D:
4194 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4195 h->non_got_ref = TRUE;
4199 case R_PPC_VLE_REL8:
4200 case R_PPC_VLE_REL15:
4201 case R_PPC_VLE_REL24:
4202 case R_PPC_VLE_LO16A:
4203 case R_PPC_VLE_LO16D:
4204 case R_PPC_VLE_HI16A:
4205 case R_PPC_VLE_HI16D:
4206 case R_PPC_VLE_HA16A:
4207 case R_PPC_VLE_HA16D:
4208 case R_PPC_VLE_ADDR20:
4211 case R_PPC_EMB_SDA2REL:
4212 if (bfd_link_pic (info))
4214 bad_shared_reloc (abfd, r_type);
4217 htab->sdata[1].sym->ref_regular = 1;
4220 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4221 h->non_got_ref = TRUE;
4225 case R_PPC_VLE_SDA21_LO:
4226 case R_PPC_VLE_SDA21:
4227 case R_PPC_EMB_SDA21:
4228 case R_PPC_EMB_RELSDA:
4229 if (bfd_link_pic (info))
4231 bad_shared_reloc (abfd, r_type);
4236 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4237 h->non_got_ref = TRUE;
4241 case R_PPC_EMB_NADDR32:
4242 case R_PPC_EMB_NADDR16:
4243 case R_PPC_EMB_NADDR16_LO:
4244 case R_PPC_EMB_NADDR16_HI:
4245 case R_PPC_EMB_NADDR16_HA:
4246 if (bfd_link_pic (info))
4248 bad_shared_reloc (abfd, r_type);
4252 h->non_got_ref = TRUE;
4255 case R_PPC_PLTREL24:
4260 case R_PPC_PLTREL32:
4261 case R_PPC_PLT16_LO:
4262 case R_PPC_PLT16_HI:
4263 case R_PPC_PLT16_HA:
4265 fprintf (stderr, "Reloc requires a PLT entry\n");
4267 /* This symbol requires a procedure linkage table entry. */
4272 /* It does not make sense to have a procedure linkage
4273 table entry for a non-ifunc local symbol. */
4274 info->callbacks->einfo
4275 /* xgettext:c-format */
4276 (_("%H: %s reloc against local symbol\n"),
4277 abfd, sec, rel->r_offset,
4278 ppc_elf_howto_table[r_type]->name);
4279 bfd_set_error (bfd_error_bad_value);
4287 if (r_type == R_PPC_PLTREL24)
4289 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4290 if (bfd_link_pic (info))
4291 addend = rel->r_addend;
4294 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4299 /* The following relocations don't need to propagate the
4300 relocation if linking a shared object since they are
4301 section relative. */
4303 case R_PPC_SECTOFF_LO:
4304 case R_PPC_SECTOFF_HI:
4305 case R_PPC_SECTOFF_HA:
4306 case R_PPC_DTPREL16:
4307 case R_PPC_DTPREL16_LO:
4308 case R_PPC_DTPREL16_HI:
4309 case R_PPC_DTPREL16_HA:
4314 case R_PPC_REL16_LO:
4315 case R_PPC_REL16_HI:
4316 case R_PPC_REL16_HA:
4317 case R_PPC_REL16DX_HA:
4318 ppc_elf_tdata (abfd)->has_rel16 = 1;
4321 /* These are just markers. */
4323 case R_PPC_EMB_MRKREF:
4327 case R_PPC_RELAX_PLT:
4328 case R_PPC_RELAX_PLTREL24:
4332 /* These should only appear in dynamic objects. */
4334 case R_PPC_GLOB_DAT:
4335 case R_PPC_JMP_SLOT:
4336 case R_PPC_RELATIVE:
4337 case R_PPC_IRELATIVE:
4340 /* These aren't handled yet. We'll report an error later. */
4342 case R_PPC_EMB_RELSEC16:
4343 case R_PPC_EMB_RELST_LO:
4344 case R_PPC_EMB_RELST_HI:
4345 case R_PPC_EMB_RELST_HA:
4346 case R_PPC_EMB_BIT_FLD:
4349 /* This refers only to functions defined in the shared library. */
4350 case R_PPC_LOCAL24PC:
4351 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4353 htab->plt_type = PLT_OLD;
4354 htab->old_bfd = abfd;
4356 if (h != NULL && h->type == STT_GNU_IFUNC)
4359 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4364 /* This relocation describes the C++ object vtable hierarchy.
4365 Reconstruct it for later use during GC. */
4366 case R_PPC_GNU_VTINHERIT:
4367 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4371 /* This relocation describes which C++ vtable entries are actually
4372 used. Record for later use during GC. */
4373 case R_PPC_GNU_VTENTRY:
4374 BFD_ASSERT (h != NULL);
4376 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4380 /* We shouldn't really be seeing TPREL32. */
4383 case R_PPC_TPREL16_LO:
4384 case R_PPC_TPREL16_HI:
4385 case R_PPC_TPREL16_HA:
4386 if (bfd_link_dll (info))
4387 info->flags |= DF_STATIC_TLS;
4391 case R_PPC_DTPMOD32:
4392 case R_PPC_DTPREL32:
4398 && (sec->flags & SEC_CODE) != 0
4399 && bfd_link_pic (info)
4400 && htab->plt_type == PLT_UNSET)
4402 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4403 the start of a function, which assembles to a REL32
4404 reference to .got2. If we detect one of these, then
4405 force the old PLT layout because the linker cannot
4406 reliably deduce the GOT pointer value needed for
4409 Elf_Internal_Sym *isym;
4411 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4416 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4419 htab->plt_type = PLT_OLD;
4420 htab->old_bfd = abfd;
4423 if (h == NULL || h == htab->elf.hgot)
4429 case R_PPC_ADDR16_LO:
4430 case R_PPC_ADDR16_HI:
4431 case R_PPC_ADDR16_HA:
4434 if (h != NULL && !bfd_link_pic (info))
4436 /* We may need a plt entry if the symbol turns out to be
4437 a function defined in a dynamic object. */
4438 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4441 /* We may need a copy reloc too. */
4443 h->pointer_equality_needed = 1;
4444 if (r_type == R_PPC_ADDR16_HA)
4445 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4446 if (r_type == R_PPC_ADDR16_LO)
4447 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4453 case R_PPC_REL14_BRTAKEN:
4454 case R_PPC_REL14_BRNTAKEN:
4457 if (h == htab->elf.hgot)
4459 if (htab->plt_type == PLT_UNSET)
4461 htab->plt_type = PLT_OLD;
4462 htab->old_bfd = abfd;
4470 case R_PPC_ADDR14_BRTAKEN:
4471 case R_PPC_ADDR14_BRNTAKEN:
4472 if (h != NULL && !bfd_link_pic (info))
4474 /* We may need a plt entry if the symbol turns out to be
4475 a function defined in a dynamic object. */
4477 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4483 /* If we are creating a shared library, and this is a reloc
4484 against a global symbol, or a non PC relative reloc
4485 against a local symbol, then we need to copy the reloc
4486 into the shared library. However, if we are linking with
4487 -Bsymbolic, we do not need to copy a reloc against a
4488 global symbol which is defined in an object we are
4489 including in the link (i.e., DEF_REGULAR is set). At
4490 this point we have not seen all the input files, so it is
4491 possible that DEF_REGULAR is not set now but will be set
4492 later (it is never cleared). In case of a weak definition,
4493 DEF_REGULAR may be cleared later by a strong definition in
4494 a shared library. We account for that possibility below by
4495 storing information in the dyn_relocs field of the hash
4496 table entry. A similar situation occurs when creating
4497 shared libraries and symbol visibility changes render the
4500 If on the other hand, we are creating an executable, we
4501 may need to keep relocations for symbols satisfied by a
4502 dynamic library if we manage to avoid copy relocs for the
4504 if ((bfd_link_pic (info)
4505 && (must_be_dyn_reloc (info, r_type)
4507 && (!SYMBOLIC_BIND (info, h)
4508 || h->root.type == bfd_link_hash_defweak
4509 || !h->def_regular))))
4510 || (ELIMINATE_COPY_RELOCS
4511 && !bfd_link_pic (info)
4513 && (h->root.type == bfd_link_hash_defweak
4514 || !h->def_regular)))
4518 "ppc_elf_check_relocs needs to "
4519 "create relocation for %s\n",
4520 (h && h->root.root.string
4521 ? h->root.root.string : "<unknown>"));
4525 if (htab->elf.dynobj == NULL)
4526 htab->elf.dynobj = abfd;
4528 sreloc = _bfd_elf_make_dynamic_reloc_section
4529 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4535 /* If this is a global symbol, we count the number of
4536 relocations we need for this symbol. */
4539 struct elf_dyn_relocs *p;
4540 struct elf_dyn_relocs **rel_head;
4542 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4544 if (p == NULL || p->sec != sec)
4546 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4549 p->next = *rel_head;
4556 if (!must_be_dyn_reloc (info, r_type))
4561 /* Track dynamic relocs needed for local syms too.
4562 We really need local syms available to do this
4564 struct ppc_dyn_relocs *p;
4565 struct ppc_dyn_relocs **rel_head;
4566 bfd_boolean is_ifunc;
4569 Elf_Internal_Sym *isym;
4571 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4576 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4580 vpp = &elf_section_data (s)->local_dynrel;
4581 rel_head = (struct ppc_dyn_relocs **) vpp;
4582 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4584 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4586 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4588 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4591 p->next = *rel_head;
4594 p->ifunc = is_ifunc;
4608 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4609 and OBFD, and merge non-conflicting ones. */
4611 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4613 bfd *obfd = info->output_bfd;
4614 obj_attribute *in_attr, *in_attrs;
4615 obj_attribute *out_attr, *out_attrs;
4617 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4618 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4620 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4621 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4623 if (in_attr->i != out_attr->i)
4625 int in_fp = in_attr->i & 3;
4626 int out_fp = out_attr->i & 3;
4630 else if (out_fp == 0)
4633 out_attr->i ^= in_fp;
4635 else if (out_fp != 2 && in_fp == 2)
4637 /* xgettext:c-format */
4638 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4639 else if (out_fp == 2 && in_fp != 2)
4641 /* xgettext:c-format */
4642 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4643 else if (out_fp == 1 && in_fp == 3)
4645 /* xgettext:c-format */
4646 (_("Warning: %B uses double-precision hard float, "
4647 "%B uses single-precision hard float"), obfd, ibfd);
4648 else if (out_fp == 3 && in_fp == 1)
4650 /* xgettext:c-format */
4651 (_("Warning: %B uses double-precision hard float, "
4652 "%B uses single-precision hard float"), ibfd, obfd);
4654 in_fp = in_attr->i & 0xc;
4655 out_fp = out_attr->i & 0xc;
4658 else if (out_fp == 0)
4661 out_attr->i ^= in_fp;
4663 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4665 /* xgettext:c-format */
4666 (_("Warning: %B uses 64-bit long double, "
4667 "%B uses 128-bit long double"), ibfd, obfd);
4668 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4670 /* xgettext:c-format */
4671 (_("Warning: %B uses 64-bit long double, "
4672 "%B uses 128-bit long double"), obfd, ibfd);
4673 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4675 /* xgettext:c-format */
4676 (_("Warning: %B uses IBM long double, "
4677 "%B uses IEEE long double"), ibfd, obfd);
4678 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4680 /* xgettext:c-format */
4681 (_("Warning: %B uses IBM long double, "
4682 "%B uses IEEE long double"), obfd, ibfd);
4686 /* Merge object attributes from IBFD into OBFD. Warn if
4687 there are conflicting attributes. */
4689 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4692 obj_attribute *in_attr, *in_attrs;
4693 obj_attribute *out_attr, *out_attrs;
4695 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4697 obfd = info->output_bfd;
4698 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4699 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4701 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4702 merge non-conflicting ones. */
4703 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4704 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4705 if (in_attr->i != out_attr->i)
4707 int in_vec = in_attr->i & 3;
4708 int out_vec = out_attr->i & 3;
4712 else if (out_vec == 0)
4715 out_attr->i = in_vec;
4717 /* For now, allow generic to transition to AltiVec or SPE
4718 without a warning. If GCC marked files with their stack
4719 alignment and used don't-care markings for files which are
4720 not affected by the vector ABI, we could warn about this
4722 else if (in_vec == 1)
4724 else if (out_vec == 1)
4727 out_attr->i = in_vec;
4729 else if (out_vec < in_vec)
4731 /* xgettext:c-format */
4732 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4734 else if (out_vec > in_vec)
4736 /* xgettext:c-format */
4737 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4741 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4742 and merge non-conflicting ones. */
4743 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4744 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4745 if (in_attr->i != out_attr->i)
4747 int in_struct = in_attr->i & 3;
4748 int out_struct = out_attr->i & 3;
4750 if (in_struct == 0 || in_struct == 3)
4752 else if (out_struct == 0)
4755 out_attr->i = in_struct;
4757 else if (out_struct < in_struct)
4759 /* xgettext:c-format */
4760 (_("Warning: %B uses r3/r4 for small structure returns, "
4761 "%B uses memory"), obfd, ibfd);
4762 else if (out_struct > in_struct)
4764 /* xgettext:c-format */
4765 (_("Warning: %B uses r3/r4 for small structure returns, "
4766 "%B uses memory"), ibfd, obfd);
4769 /* Merge Tag_compatibility attributes and any common GNU ones. */
4770 _bfd_elf_merge_object_attributes (ibfd, info);
4775 /* Merge backend specific data from an object file to the output
4776 object file when linking. */
4779 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4781 bfd *obfd = info->output_bfd;
4786 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4789 /* Check if we have the same endianness. */
4790 if (! _bfd_generic_verify_endian_match (ibfd, info))
4793 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4796 new_flags = elf_elfheader (ibfd)->e_flags;
4797 old_flags = elf_elfheader (obfd)->e_flags;
4798 if (!elf_flags_init (obfd))
4800 /* First call, no flags set. */
4801 elf_flags_init (obfd) = TRUE;
4802 elf_elfheader (obfd)->e_flags = new_flags;
4805 /* Compatible flags are ok. */
4806 else if (new_flags == old_flags)
4809 /* Incompatible flags. */
4812 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4813 to be linked with either. */
4815 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4816 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4820 (_("%B: compiled with -mrelocatable and linked with "
4821 "modules compiled normally"), ibfd);
4823 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4824 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4828 (_("%B: compiled normally and linked with "
4829 "modules compiled with -mrelocatable"), ibfd);
4832 /* The output is -mrelocatable-lib iff both the input files are. */
4833 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4834 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4836 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4837 but each input file is either -mrelocatable or -mrelocatable-lib. */
4838 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4839 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4840 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4841 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4843 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4844 any module uses it. */
4845 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4847 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4848 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4850 /* Warn about any other mismatches. */
4851 if (new_flags != old_flags)
4855 /* xgettext:c-format */
4856 (_("%B: uses different e_flags (%#x) fields "
4857 "than previous modules (%#x)"),
4858 ibfd, new_flags, old_flags);
4863 bfd_set_error (bfd_error_bad_value);
4872 ppc_elf_vle_split16 (bfd *input_bfd,
4873 asection *input_section,
4874 unsigned long offset,
4877 split16_format_type split16_format,
4880 unsigned int insn, opcode, top5;
4882 insn = bfd_get_32 (input_bfd, loc);
4883 opcode = insn & 0xfc00f800;
4884 if (opcode == E_OR2I_INSN
4885 || opcode == E_AND2I_DOT_INSN
4886 || opcode == E_OR2IS_INSN
4887 || opcode == E_LIS_INSN
4888 || opcode == E_AND2IS_DOT_INSN)
4890 if (split16_format != split16a_type)
4893 split16_format = split16a_type;
4896 /* xgettext:c-format */
4897 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4898 input_bfd, input_section, offset, opcode);
4901 else if (opcode == E_ADD2I_DOT_INSN
4902 || opcode == E_ADD2IS_INSN
4903 || opcode == E_CMP16I_INSN
4904 || opcode == E_MULL2I_INSN
4905 || opcode == E_CMPL16I_INSN
4906 || opcode == E_CMPH16I_INSN
4907 || opcode == E_CMPHL16I_INSN)
4909 if (split16_format != split16d_type)
4912 split16_format = split16d_type;
4915 /* xgettext:c-format */
4916 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4917 input_bfd, input_section, offset, opcode);
4920 top5 = value & 0xf800;
4921 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4922 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4924 insn |= value & 0x7ff;
4925 bfd_put_32 (input_bfd, insn, loc);
4929 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
4933 insn = bfd_get_32 (output_bfd, loc);
4934 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4935 /* Top 4 bits of value to 17..20. */
4936 insn |= (value & 0xf0000) >> 5;
4937 /* Next 5 bits of the value to 11..15. */
4938 insn |= (value & 0xf800) << 5;
4939 /* And the final 11 bits of the value to bits 21 to 31. */
4940 insn |= value & 0x7ff;
4941 bfd_put_32 (output_bfd, insn, loc);
4945 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4946 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4948 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4949 struct bfd_link_info *info)
4951 struct ppc_elf_link_hash_table *htab;
4954 htab = ppc_elf_hash_table (info);
4956 if (htab->plt_type == PLT_UNSET)
4958 struct elf_link_hash_entry *h;
4960 if (htab->params->plt_style == PLT_OLD)
4961 htab->plt_type = PLT_OLD;
4962 else if (bfd_link_pic (info)
4963 && htab->elf.dynamic_sections_created
4964 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4965 FALSE, FALSE, TRUE)) != NULL
4966 && (h->type == STT_FUNC
4969 && !(SYMBOL_CALLS_LOCAL (info, h)
4970 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
4972 /* Profiling of shared libs (and pies) is not supported with
4973 secure plt, because ppc32 does profiling before a
4974 function prologue and a secure plt pic call stubs needs
4975 r30 to be set up. */
4976 htab->plt_type = PLT_OLD;
4981 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4983 /* Look through the reloc flags left by ppc_elf_check_relocs.
4984 Use the old style bss plt if a file makes plt calls
4985 without using the new relocs, and if ld isn't given
4986 --secure-plt and we never see REL16 relocs. */
4987 if (plt_type == PLT_UNSET)
4989 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4990 if (is_ppc_elf (ibfd))
4992 if (ppc_elf_tdata (ibfd)->has_rel16)
4994 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4997 htab->old_bfd = ibfd;
5001 htab->plt_type = plt_type;
5004 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5006 if (htab->old_bfd != NULL)
5007 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5010 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5013 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5015 if (htab->plt_type == PLT_NEW)
5017 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5018 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5020 /* The new PLT is a loaded section. */
5021 if (htab->elf.splt != NULL
5022 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5025 /* The new GOT is not executable. */
5026 if (htab->elf.sgot != NULL
5027 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5032 /* Stop an unused .glink section from affecting .text alignment. */
5033 if (htab->glink != NULL
5034 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5037 return htab->plt_type == PLT_NEW;
5040 /* Return the section that should be marked against GC for a given
5044 ppc_elf_gc_mark_hook (asection *sec,
5045 struct bfd_link_info *info,
5046 Elf_Internal_Rela *rel,
5047 struct elf_link_hash_entry *h,
5048 Elf_Internal_Sym *sym)
5051 switch (ELF32_R_TYPE (rel->r_info))
5053 case R_PPC_GNU_VTINHERIT:
5054 case R_PPC_GNU_VTENTRY:
5058 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5061 /* Set plt output section type, htab->tls_get_addr, and call the
5062 generic ELF tls_setup function. */
5065 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5067 struct ppc_elf_link_hash_table *htab;
5069 htab = ppc_elf_hash_table (info);
5070 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5071 FALSE, FALSE, TRUE);
5072 if (htab->plt_type != PLT_NEW)
5073 htab->params->no_tls_get_addr_opt = TRUE;
5075 if (!htab->params->no_tls_get_addr_opt)
5077 struct elf_link_hash_entry *opt, *tga;
5078 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5079 FALSE, FALSE, TRUE);
5081 && (opt->root.type == bfd_link_hash_defined
5082 || opt->root.type == bfd_link_hash_defweak))
5084 /* If glibc supports an optimized __tls_get_addr call stub,
5085 signalled by the presence of __tls_get_addr_opt, and we'll
5086 be calling __tls_get_addr via a plt call stub, then
5087 make __tls_get_addr point to __tls_get_addr_opt. */
5088 tga = htab->tls_get_addr;
5089 if (htab->elf.dynamic_sections_created
5091 && (tga->type == STT_FUNC
5093 && !(SYMBOL_CALLS_LOCAL (info, tga)
5094 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5096 struct plt_entry *ent;
5097 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5098 if (ent->plt.refcount > 0)
5102 tga->root.type = bfd_link_hash_indirect;
5103 tga->root.u.i.link = &opt->root;
5104 ppc_elf_copy_indirect_symbol (info, opt, tga);
5106 if (opt->dynindx != -1)
5108 /* Use __tls_get_addr_opt in dynamic relocations. */
5110 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5112 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5115 htab->tls_get_addr = opt;
5120 htab->params->no_tls_get_addr_opt = TRUE;
5122 if (htab->plt_type == PLT_NEW
5123 && htab->elf.splt != NULL
5124 && htab->elf.splt->output_section != NULL)
5126 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5127 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5130 return _bfd_elf_tls_setup (obfd, info);
5133 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5137 branch_reloc_hash_match (const bfd *ibfd,
5138 const Elf_Internal_Rela *rel,
5139 const struct elf_link_hash_entry *hash)
5141 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5142 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5143 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5145 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5147 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5148 struct elf_link_hash_entry *h;
5150 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5151 while (h->root.type == bfd_link_hash_indirect
5152 || h->root.type == bfd_link_hash_warning)
5153 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5160 /* Run through all the TLS relocs looking for optimization
5164 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5165 struct bfd_link_info *info)
5169 struct ppc_elf_link_hash_table *htab;
5172 if (!bfd_link_executable (info))
5175 htab = ppc_elf_hash_table (info);
5179 /* Make two passes through the relocs. First time check that tls
5180 relocs involved in setting up a tls_get_addr call are indeed
5181 followed by such a call. If they are not, don't do any tls
5182 optimization. On the second pass twiddle tls_mask flags to
5183 notify relocate_section that optimization can be done, and
5184 adjust got and plt refcounts. */
5185 for (pass = 0; pass < 2; ++pass)
5186 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5188 Elf_Internal_Sym *locsyms = NULL;
5189 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5190 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5192 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5193 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5195 Elf_Internal_Rela *relstart, *rel, *relend;
5196 int expecting_tls_get_addr = 0;
5198 /* Read the relocations. */
5199 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5201 if (relstart == NULL)
5204 relend = relstart + sec->reloc_count;
5205 for (rel = relstart; rel < relend; rel++)
5207 enum elf_ppc_reloc_type r_type;
5208 unsigned long r_symndx;
5209 struct elf_link_hash_entry *h = NULL;
5211 char tls_set, tls_clear;
5212 bfd_boolean is_local;
5213 bfd_signed_vma *got_count;
5215 r_symndx = ELF32_R_SYM (rel->r_info);
5216 if (r_symndx >= symtab_hdr->sh_info)
5218 struct elf_link_hash_entry **sym_hashes;
5220 sym_hashes = elf_sym_hashes (ibfd);
5221 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5222 while (h->root.type == bfd_link_hash_indirect
5223 || h->root.type == bfd_link_hash_warning)
5224 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5232 r_type = ELF32_R_TYPE (rel->r_info);
5233 /* If this section has old-style __tls_get_addr calls
5234 without marker relocs, then check that each
5235 __tls_get_addr call reloc is preceded by a reloc
5236 that conceivably belongs to the __tls_get_addr arg
5237 setup insn. If we don't find matching arg setup
5238 relocs, don't do any tls optimization. */
5240 && sec->has_tls_get_addr_call
5242 && h == htab->tls_get_addr
5243 && !expecting_tls_get_addr
5244 && is_branch_reloc (r_type))
5246 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5247 "TLS optimization disabled\n",
5248 ibfd, sec, rel->r_offset);
5249 if (elf_section_data (sec)->relocs != relstart)
5254 expecting_tls_get_addr = 0;
5257 case R_PPC_GOT_TLSLD16:
5258 case R_PPC_GOT_TLSLD16_LO:
5259 expecting_tls_get_addr = 1;
5262 case R_PPC_GOT_TLSLD16_HI:
5263 case R_PPC_GOT_TLSLD16_HA:
5264 /* These relocs should never be against a symbol
5265 defined in a shared lib. Leave them alone if
5266 that turns out to be the case. */
5275 case R_PPC_GOT_TLSGD16:
5276 case R_PPC_GOT_TLSGD16_LO:
5277 expecting_tls_get_addr = 1;
5280 case R_PPC_GOT_TLSGD16_HI:
5281 case R_PPC_GOT_TLSGD16_HA:
5287 tls_set = TLS_TLS | TLS_TPRELGD;
5291 case R_PPC_GOT_TPREL16:
5292 case R_PPC_GOT_TPREL16_LO:
5293 case R_PPC_GOT_TPREL16_HI:
5294 case R_PPC_GOT_TPREL16_HA:
5299 tls_clear = TLS_TPREL;
5307 expecting_tls_get_addr = 2;
5318 if (!expecting_tls_get_addr
5319 || (expecting_tls_get_addr == 1
5320 && !sec->has_tls_get_addr_call))
5323 if (rel + 1 < relend
5324 && branch_reloc_hash_match (ibfd, rel + 1,
5325 htab->tls_get_addr))
5328 /* Uh oh, we didn't find the expected call. We
5329 could just mark this symbol to exclude it
5330 from tls optimization but it's safer to skip
5331 the entire optimization. */
5332 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5333 "TLS optimization disabled\n"),
5334 ibfd, sec, rel->r_offset);
5335 if (elf_section_data (sec)->relocs != relstart)
5340 if (expecting_tls_get_addr)
5342 struct plt_entry *ent;
5345 if (bfd_link_pic (info)
5346 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5347 addend = rel[1].r_addend;
5348 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5350 if (ent != NULL && ent->plt.refcount > 0)
5351 ent->plt.refcount -= 1;
5353 if (expecting_tls_get_addr == 2)
5359 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5360 got_count = &h->got.refcount;
5364 bfd_signed_vma *lgot_refs;
5365 struct plt_entry **local_plt;
5368 if (locsyms == NULL)
5370 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5371 if (locsyms == NULL)
5372 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5373 symtab_hdr->sh_info,
5374 0, NULL, NULL, NULL);
5375 if (locsyms == NULL)
5377 if (elf_section_data (sec)->relocs != relstart)
5382 lgot_refs = elf_local_got_refcounts (ibfd);
5383 if (lgot_refs == NULL)
5385 local_plt = (struct plt_entry **)
5386 (lgot_refs + symtab_hdr->sh_info);
5387 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5388 tls_mask = &lgot_masks[r_symndx];
5389 got_count = &lgot_refs[r_symndx];
5394 /* We managed to get rid of a got entry. */
5399 *tls_mask |= tls_set;
5400 *tls_mask &= ~tls_clear;
5403 if (elf_section_data (sec)->relocs != relstart)
5408 && (symtab_hdr->contents != (unsigned char *) locsyms))
5410 if (!info->keep_memory)
5413 symtab_hdr->contents = (unsigned char *) locsyms;
5416 htab->do_tls_opt = 1;
5420 /* Find dynamic relocs for H that apply to read-only sections. */
5423 readonly_dynrelocs (struct elf_link_hash_entry *h)
5425 struct elf_dyn_relocs *p;
5427 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5429 asection *s = p->sec->output_section;
5431 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5437 /* Return true if we have dynamic relocs against H or any of its weak
5438 aliases, that apply to read-only sections. Cannot be used after
5439 size_dynamic_sections. */
5442 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
5444 struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
5447 if (readonly_dynrelocs (&eh->elf))
5449 eh = ppc_elf_hash_entry (eh->elf.u.alias);
5450 } while (eh != NULL && &eh->elf != h);
5455 /* Return whether H has pc-relative dynamic relocs. */
5458 pc_dynrelocs (struct elf_link_hash_entry *h)
5460 struct elf_dyn_relocs *p;
5462 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5463 if (p->pc_count != 0)
5468 /* Adjust a symbol defined by a dynamic object and referenced by a
5469 regular object. The current definition is in some section of the
5470 dynamic object, but we're not including those sections. We have to
5471 change the definition to something the rest of the link can
5475 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5476 struct elf_link_hash_entry *h)
5478 struct ppc_elf_link_hash_table *htab;
5482 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5483 h->root.root.string);
5486 /* Make sure we know what is going on here. */
5487 htab = ppc_elf_hash_table (info);
5488 BFD_ASSERT (htab->elf.dynobj != NULL
5490 || h->type == STT_GNU_IFUNC
5494 && !h->def_regular)));
5496 /* Deal with function syms. */
5497 if (h->type == STT_FUNC
5498 || h->type == STT_GNU_IFUNC
5501 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
5502 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5503 /* Discard dyn_relocs when non-pic if we've decided that a
5504 function symbol is local. */
5505 if (!bfd_link_pic (info) && local)
5506 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5508 /* Clear procedure linkage table information for any symbol that
5509 won't need a .plt entry. */
5510 struct plt_entry *ent;
5511 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5512 if (ent->plt.refcount > 0)
5515 || (h->type != STT_GNU_IFUNC && local))
5517 /* A PLT entry is not required/allowed when:
5519 1. We are not using ld.so; because then the PLT entry
5520 can't be set up, so we can't use one. In this case,
5521 ppc_elf_adjust_dynamic_symbol won't even be called.
5523 2. GC has rendered the entry unused.
5525 3. We know for certain that a call to this symbol
5526 will go to this object, or will remain undefined. */
5527 h->plt.plist = NULL;
5529 h->pointer_equality_needed = 0;
5533 /* Taking a function's address in a read/write section
5534 doesn't require us to define the function symbol in the
5535 executable on a plt call stub. A dynamic reloc can
5536 be used instead, giving better runtime performance.
5537 (Calls via that function pointer don't need to bounce
5538 through the plt call stub.) Similarly, use a dynamic
5539 reloc for a weak reference when possible, allowing the
5540 resolution of the symbol to be set at load time rather
5542 if ((h->pointer_equality_needed
5544 && !h->ref_regular_nonweak
5545 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5546 && !htab->is_vxworks
5547 && !ppc_elf_hash_entry (h)->has_sda_refs
5548 && !readonly_dynrelocs (h))
5550 h->pointer_equality_needed = 0;
5551 /* If we haven't seen a branch reloc then we don't need
5554 h->plt.plist = NULL;
5556 else if (!bfd_link_pic (info))
5557 /* We are going to be defining the function symbol on the
5558 plt stub, so no dyn_relocs needed when non-pic. */
5559 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5561 h->protected_def = 0;
5562 /* Function symbols can't have copy relocs. */
5566 h->plt.plist = NULL;
5568 /* If this is a weak symbol, and there is a real definition, the
5569 processor independent code will have arranged for us to see the
5570 real definition first, and we can just use the same value. */
5571 if (h->is_weakalias)
5573 struct elf_link_hash_entry *def = weakdef (h);
5574 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
5575 h->root.u.def.section = def->root.u.def.section;
5576 h->root.u.def.value = def->root.u.def.value;
5577 if (def->root.u.def.section == htab->elf.sdynbss
5578 || def->root.u.def.section == htab->elf.sdynrelro
5579 || def->root.u.def.section == htab->dynsbss)
5580 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5584 /* This is a reference to a symbol defined by a dynamic object which
5585 is not a function. */
5587 /* If we are creating a shared library, we must presume that the
5588 only references to the symbol are via the global offset table.
5589 For such cases we need not do anything here; the relocations will
5590 be handled correctly by relocate_section. */
5591 if (bfd_link_pic (info))
5593 h->protected_def = 0;
5597 /* If there are no references to this symbol that do not use the
5598 GOT, we don't need to generate a copy reloc. */
5599 if (!h->non_got_ref)
5601 h->protected_def = 0;
5605 /* Protected variables do not work with .dynbss. The copy in
5606 .dynbss won't be used by the shared library with the protected
5607 definition for the variable. Editing to PIC, or text relocations
5608 are preferable to an incorrect program. */
5609 if (h->protected_def)
5611 if (ELIMINATE_COPY_RELOCS
5612 && ppc_elf_hash_entry (h)->has_addr16_ha
5613 && ppc_elf_hash_entry (h)->has_addr16_lo
5614 && htab->params->pic_fixup == 0
5615 && info->disable_target_specific_optimizations <= 1)
5616 htab->params->pic_fixup = 1;
5620 /* If -z nocopyreloc was given, we won't generate them either. */
5621 if (info->nocopyreloc)
5624 /* If we don't find any dynamic relocs in read-only sections, then
5625 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5626 We can't do this if there are any small data relocations. This
5627 doesn't work on VxWorks, where we can not have dynamic
5628 relocations (other than copy and jump slot relocations) in an
5630 if (ELIMINATE_COPY_RELOCS
5631 && !ppc_elf_hash_entry (h)->has_sda_refs
5632 && !htab->is_vxworks
5634 && !alias_readonly_dynrelocs (h))
5637 /* We must allocate the symbol in our .dynbss section, which will
5638 become part of the .bss section of the executable. There will be
5639 an entry for this symbol in the .dynsym section. The dynamic
5640 object will contain position independent code, so all references
5641 from the dynamic object to this symbol will go through the global
5642 offset table. The dynamic linker will use the .dynsym entry to
5643 determine the address it must put in the global offset table, so
5644 both the dynamic object and the regular object will refer to the
5645 same memory location for the variable.
5647 Of course, if the symbol is referenced using SDAREL relocs, we
5648 must instead allocate it in .sbss. */
5649 if (ppc_elf_hash_entry (h)->has_sda_refs)
5651 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5652 s = htab->elf.sdynrelro;
5654 s = htab->elf.sdynbss;
5655 BFD_ASSERT (s != NULL);
5657 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5661 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5662 linker to copy the initial value out of the dynamic object
5663 and into the runtime process image. */
5664 if (ppc_elf_hash_entry (h)->has_sda_refs)
5665 srel = htab->relsbss;
5666 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5667 srel = htab->elf.sreldynrelro;
5669 srel = htab->elf.srelbss;
5670 BFD_ASSERT (srel != NULL);
5671 srel->size += sizeof (Elf32_External_Rela);
5675 /* We no longer want dyn_relocs. */
5676 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5677 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5680 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5681 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5682 specifying the addend on the plt relocation. For -fpic code, the sym
5683 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5684 xxxxxxxx.got2.plt_pic32.<callee>. */
5687 add_stub_sym (struct plt_entry *ent,
5688 struct elf_link_hash_entry *h,
5689 struct bfd_link_info *info)
5691 struct elf_link_hash_entry *sh;
5692 size_t len1, len2, len3;
5695 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5697 if (bfd_link_pic (info))
5698 stub = ".plt_pic32.";
5700 stub = ".plt_call32.";
5702 len1 = strlen (h->root.root.string);
5703 len2 = strlen (stub);
5706 len3 = strlen (ent->sec->name);
5707 name = bfd_malloc (len1 + len2 + len3 + 9);
5710 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5712 memcpy (name + 8, ent->sec->name, len3);
5713 memcpy (name + 8 + len3, stub, len2);
5714 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5715 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5718 if (sh->root.type == bfd_link_hash_new)
5720 sh->root.type = bfd_link_hash_defined;
5721 sh->root.u.def.section = htab->glink;
5722 sh->root.u.def.value = ent->glink_offset;
5723 sh->ref_regular = 1;
5724 sh->def_regular = 1;
5725 sh->ref_regular_nonweak = 1;
5726 sh->forced_local = 1;
5728 sh->root.linker_def = 1;
5733 /* Allocate NEED contiguous space in .got, and return the offset.
5734 Handles allocation of the got header when crossing 32k. */
5737 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5740 unsigned int max_before_header;
5742 if (htab->plt_type == PLT_VXWORKS)
5744 where = htab->elf.sgot->size;
5745 htab->elf.sgot->size += need;
5749 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5750 if (need <= htab->got_gap)
5752 where = max_before_header - htab->got_gap;
5753 htab->got_gap -= need;
5757 if (htab->elf.sgot->size + need > max_before_header
5758 && htab->elf.sgot->size <= max_before_header)
5760 htab->got_gap = max_before_header - htab->elf.sgot->size;
5761 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5763 where = htab->elf.sgot->size;
5764 htab->elf.sgot->size += need;
5770 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5771 TLS_LD is excluded because those go in a special GOT slot. */
5773 static inline unsigned int
5774 got_entries_needed (int tls_mask)
5777 if ((tls_mask & TLS_TLS) == 0)
5782 if ((tls_mask & TLS_GD) != 0)
5784 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5786 if ((tls_mask & TLS_DTPREL) != 0)
5792 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5793 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5796 static inline unsigned int
5797 got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
5799 /* All the entries we allocated need relocs.
5800 Except IE in executable with a local symbol. We could also omit
5801 the DTPREL reloc on the second word of a GD entry under the same
5802 condition as that for IE, but ld.so needs to differentiate
5803 LD and GD entries. */
5804 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0 && known)
5806 return need * sizeof (Elf32_External_Rela) / 4;
5809 /* If H is undefined, make it dynamic if that makes sense. */
5812 ensure_undef_dynamic (struct bfd_link_info *info,
5813 struct elf_link_hash_entry *h)
5815 struct elf_link_hash_table *htab = elf_hash_table (info);
5817 if (htab->dynamic_sections_created
5818 && ((info->dynamic_undefined_weak != 0
5819 && h->root.type == bfd_link_hash_undefweak)
5820 || h->root.type == bfd_link_hash_undefined)
5823 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5824 return bfd_elf_link_record_dynamic_symbol (info, h);
5828 /* Allocate space in associated reloc sections for dynamic relocs. */
5831 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5833 struct bfd_link_info *info = inf;
5834 struct ppc_elf_link_hash_entry *eh;
5835 struct ppc_elf_link_hash_table *htab;
5836 struct elf_dyn_relocs *p;
5839 if (h->root.type == bfd_link_hash_indirect)
5842 htab = ppc_elf_hash_table (info);
5843 eh = (struct ppc_elf_link_hash_entry *) h;
5844 if (eh->elf.got.refcount > 0
5845 || (ELIMINATE_COPY_RELOCS
5846 && !eh->elf.def_regular
5847 && eh->elf.protected_def
5848 && eh->has_addr16_ha
5849 && eh->has_addr16_lo
5850 && htab->params->pic_fixup > 0))
5854 /* Make sure this symbol is output as a dynamic symbol. */
5855 if (!ensure_undef_dynamic (info, &eh->elf))
5859 if ((eh->tls_mask & TLS_LD) != 0)
5861 if (!eh->elf.def_dynamic)
5862 /* We'll just use htab->tlsld_got.offset. This should
5863 always be the case. It's a little odd if we have
5864 a local dynamic reloc against a non-local symbol. */
5865 htab->tlsld_got.refcount += 1;
5869 need += got_entries_needed (eh->tls_mask);
5871 eh->elf.got.offset = (bfd_vma) -1;
5874 eh->elf.got.offset = allocate_got (htab, need);
5875 if ((bfd_link_pic (info)
5876 || (htab->elf.dynamic_sections_created
5877 && eh->elf.dynindx != -1
5878 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5879 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5882 bfd_boolean tprel_known = (bfd_link_executable (info)
5883 && SYMBOL_REFERENCES_LOCAL (info,
5886 need = got_relocs_needed (eh->tls_mask, need, tprel_known);
5887 if ((eh->tls_mask & TLS_LD) != 0 && eh->elf.def_dynamic)
5888 need -= sizeof (Elf32_External_Rela);
5889 rsec = htab->elf.srelgot;
5890 if (eh->elf.type == STT_GNU_IFUNC)
5891 rsec = htab->elf.irelplt;
5897 eh->elf.got.offset = (bfd_vma) -1;
5899 /* If no dynamic sections we can't have dynamic relocs, except for
5900 IFUNCs which are handled even in static executables. */
5901 if (!htab->elf.dynamic_sections_created
5902 && h->type != STT_GNU_IFUNC)
5903 eh->dyn_relocs = NULL;
5905 /* Discard relocs on undefined symbols that must be local. */
5906 else if (h->root.type == bfd_link_hash_undefined
5907 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5908 eh->dyn_relocs = NULL;
5910 /* Also discard relocs on undefined weak syms with non-default
5911 visibility, or when dynamic_undefined_weak says so. */
5912 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5913 eh->dyn_relocs = NULL;
5915 if (eh->dyn_relocs == NULL)
5918 /* In the shared -Bsymbolic case, discard space allocated for
5919 dynamic pc-relative relocs against symbols which turn out to be
5920 defined in regular objects. For the normal shared case, discard
5921 space for relocs that have become local due to symbol visibility
5923 else if (bfd_link_pic (info))
5925 /* Relocs that use pc_count are those that appear on a call insn,
5926 or certain REL relocs (see must_be_dyn_reloc) that can be
5927 generated via assembly. We want calls to protected symbols to
5928 resolve directly to the function rather than going via the plt.
5929 If people want function pointer comparisons to work as expected
5930 then they should avoid writing weird assembly. */
5931 if (SYMBOL_CALLS_LOCAL (info, h))
5933 struct elf_dyn_relocs **pp;
5935 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5937 p->count -= p->pc_count;
5946 if (htab->is_vxworks)
5948 struct elf_dyn_relocs **pp;
5950 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5952 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5959 if (eh->dyn_relocs != NULL)
5961 /* Make sure this symbol is output as a dynamic symbol. */
5962 if (!ensure_undef_dynamic (info, h))
5966 else if (ELIMINATE_COPY_RELOCS)
5968 /* For the non-pic case, discard space for relocs against
5969 symbols which turn out to need copy relocs or are not
5971 if (h->dynamic_adjusted
5973 && !ELF_COMMON_DEF_P (h)
5974 && !(h->protected_def
5975 && eh->has_addr16_ha
5976 && eh->has_addr16_lo
5977 && htab->params->pic_fixup > 0))
5979 /* Make sure this symbol is output as a dynamic symbol. */
5980 if (!ensure_undef_dynamic (info, h))
5983 if (h->dynindx == -1)
5984 eh->dyn_relocs = NULL;
5987 eh->dyn_relocs = NULL;
5990 /* Allocate space. */
5991 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5993 asection *sreloc = elf_section_data (p->sec)->sreloc;
5994 if (eh->elf.type == STT_GNU_IFUNC)
5995 sreloc = htab->elf.irelplt;
5996 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5999 /* Handle PLT relocs. Done last, after dynindx has settled. */
6000 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6001 if (dyn || h->type == STT_GNU_IFUNC)
6003 struct plt_entry *ent;
6004 bfd_boolean doneone = FALSE;
6005 bfd_vma plt_offset = 0, glink_offset = 0;
6007 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6008 if (ent->plt.refcount > 0)
6010 asection *s = htab->elf.splt;
6015 if (htab->plt_type == PLT_NEW || !dyn)
6019 plt_offset = s->size;
6022 ent->plt.offset = plt_offset;
6025 if (!doneone || bfd_link_pic (info))
6027 glink_offset = s->size;
6028 s->size += GLINK_ENTRY_SIZE (htab, h);
6031 && !bfd_link_pic (info)
6035 h->root.u.def.section = s;
6036 h->root.u.def.value = glink_offset;
6038 ent->glink_offset = glink_offset;
6040 if (htab->params->emit_stub_syms
6041 && !add_stub_sym (ent, h, info))
6048 /* If this is the first .plt entry, make room
6049 for the special first entry. */
6051 s->size += htab->plt_initial_entry_size;
6053 /* The PowerPC PLT is actually composed of two
6054 parts, the first part is 2 words (for a load
6055 and a jump), and then there is a remaining
6056 word available at the end. */
6057 plt_offset = (htab->plt_initial_entry_size
6058 + (htab->plt_slot_size
6060 - htab->plt_initial_entry_size)
6061 / htab->plt_entry_size)));
6063 /* If this symbol is not defined in a regular
6064 file, and we are not generating a shared
6065 library, then set the symbol to this location
6066 in the .plt. This is to avoid text
6067 relocations, and is required to make
6068 function pointers compare as equal between
6069 the normal executable and the shared library. */
6070 if (! bfd_link_pic (info)
6074 h->root.u.def.section = s;
6075 h->root.u.def.value = plt_offset;
6078 /* Make room for this entry. */
6079 s->size += htab->plt_entry_size;
6080 /* After the 8192nd entry, room for two entries
6082 if (htab->plt_type == PLT_OLD
6083 && (s->size - htab->plt_initial_entry_size)
6084 / htab->plt_entry_size
6085 > PLT_NUM_SINGLE_ENTRIES)
6086 s->size += htab->plt_entry_size;
6088 ent->plt.offset = plt_offset;
6091 /* We also need to make an entry in the .rela.plt section. */
6095 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6098 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6100 if (htab->plt_type == PLT_VXWORKS)
6102 /* Allocate space for the unloaded relocations. */
6103 if (!bfd_link_pic (info)
6104 && htab->elf.dynamic_sections_created)
6107 == (bfd_vma) htab->plt_initial_entry_size)
6109 htab->srelplt2->size
6110 += (sizeof (Elf32_External_Rela)
6111 * VXWORKS_PLTRESOLVE_RELOCS);
6114 htab->srelplt2->size
6115 += (sizeof (Elf32_External_Rela)
6116 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6119 /* Every PLT entry has an associated GOT entry in
6121 htab->elf.sgotplt->size += 4;
6128 ent->plt.offset = (bfd_vma) -1;
6132 h->plt.plist = NULL;
6138 h->plt.plist = NULL;
6145 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6146 read-only sections. */
6149 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
6153 if (h->root.type == bfd_link_hash_indirect)
6156 sec = readonly_dynrelocs (h);
6159 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
6161 info->flags |= DF_TEXTREL;
6162 info->callbacks->minfo
6163 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
6164 sec->owner, h->root.root.string, sec);
6166 /* Not an error, just cut short the traversal. */
6172 static const unsigned char glink_eh_frame_cie[] =
6174 0, 0, 0, 16, /* length. */
6175 0, 0, 0, 0, /* id. */
6176 1, /* CIE version. */
6177 'z', 'R', 0, /* Augmentation string. */
6178 4, /* Code alignment. */
6179 0x7c, /* Data alignment. */
6181 1, /* Augmentation size. */
6182 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6183 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6186 /* Set the sizes of the dynamic sections. */
6189 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6190 struct bfd_link_info *info)
6192 struct ppc_elf_link_hash_table *htab;
6198 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6201 htab = ppc_elf_hash_table (info);
6202 BFD_ASSERT (htab->elf.dynobj != NULL);
6204 if (elf_hash_table (info)->dynamic_sections_created)
6206 /* Set the contents of the .interp section to the interpreter. */
6207 if (bfd_link_executable (info) && !info->nointerp)
6209 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6210 BFD_ASSERT (s != NULL);
6211 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6212 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6216 if (htab->plt_type == PLT_OLD)
6217 htab->got_header_size = 16;
6218 else if (htab->plt_type == PLT_NEW)
6219 htab->got_header_size = 12;
6221 /* Set up .got offsets for local syms, and space for local dynamic
6223 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6225 bfd_signed_vma *local_got;
6226 bfd_signed_vma *end_local_got;
6227 struct plt_entry **local_plt;
6228 struct plt_entry **end_local_plt;
6230 bfd_size_type locsymcount;
6231 Elf_Internal_Shdr *symtab_hdr;
6233 if (!is_ppc_elf (ibfd))
6236 for (s = ibfd->sections; s != NULL; s = s->next)
6238 struct ppc_dyn_relocs *p;
6240 for (p = ((struct ppc_dyn_relocs *)
6241 elf_section_data (s)->local_dynrel);
6245 if (!bfd_is_abs_section (p->sec)
6246 && bfd_is_abs_section (p->sec->output_section))
6248 /* Input section has been discarded, either because
6249 it is a copy of a linkonce section or due to
6250 linker script /DISCARD/, so we'll be discarding
6253 else if (htab->is_vxworks
6254 && strcmp (p->sec->output_section->name,
6257 /* Relocations in vxworks .tls_vars sections are
6258 handled specially by the loader. */
6260 else if (p->count != 0)
6262 asection *sreloc = elf_section_data (p->sec)->sreloc;
6264 sreloc = htab->elf.irelplt;
6265 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6266 if ((p->sec->output_section->flags
6267 & (SEC_READONLY | SEC_ALLOC))
6268 == (SEC_READONLY | SEC_ALLOC))
6270 info->flags |= DF_TEXTREL;
6271 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
6272 p->sec->owner, p->sec);
6278 local_got = elf_local_got_refcounts (ibfd);
6282 symtab_hdr = &elf_symtab_hdr (ibfd);
6283 locsymcount = symtab_hdr->sh_info;
6284 end_local_got = local_got + locsymcount;
6285 local_plt = (struct plt_entry **) end_local_got;
6286 end_local_plt = local_plt + locsymcount;
6287 lgot_masks = (char *) end_local_plt;
6289 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6293 if ((*lgot_masks & TLS_LD) != 0)
6294 htab->tlsld_got.refcount += 1;
6295 need = got_entries_needed (*lgot_masks);
6297 *local_got = (bfd_vma) -1;
6300 *local_got = allocate_got (htab, need);
6301 if (bfd_link_pic (info))
6304 bfd_boolean tprel_known = bfd_link_executable (info);
6306 need = got_relocs_needed (*lgot_masks, need, tprel_known);
6307 srel = htab->elf.srelgot;
6308 if ((*lgot_masks & PLT_IFUNC) != 0)
6309 srel = htab->elf.irelplt;
6315 *local_got = (bfd_vma) -1;
6317 if (htab->is_vxworks)
6320 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6321 for (; local_plt < end_local_plt; ++local_plt)
6323 struct plt_entry *ent;
6324 bfd_boolean doneone = FALSE;
6325 bfd_vma plt_offset = 0, glink_offset = 0;
6327 for (ent = *local_plt; ent != NULL; ent = ent->next)
6328 if (ent->plt.refcount > 0)
6334 plt_offset = s->size;
6337 ent->plt.offset = plt_offset;
6340 if (!doneone || bfd_link_pic (info))
6342 glink_offset = s->size;
6343 s->size += GLINK_ENTRY_SIZE (htab, NULL);
6345 ent->glink_offset = glink_offset;
6349 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6354 ent->plt.offset = (bfd_vma) -1;
6358 /* Allocate space for global sym dynamic relocs. */
6359 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6361 if (htab->tlsld_got.refcount > 0)
6363 htab->tlsld_got.offset = allocate_got (htab, 8);
6364 if (bfd_link_pic (info))
6365 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6368 htab->tlsld_got.offset = (bfd_vma) -1;
6370 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6372 unsigned int g_o_t = 32768;
6374 /* If we haven't allocated the header, do so now. When we get here,
6375 for old plt/got the got size will be 0 to 32764 (not allocated),
6376 or 32780 to 65536 (header allocated). For new plt/got, the
6377 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6378 if (htab->elf.sgot->size <= 32768)
6380 g_o_t = htab->elf.sgot->size;
6381 if (htab->plt_type == PLT_OLD)
6383 htab->elf.sgot->size += htab->got_header_size;
6386 htab->elf.hgot->root.u.def.value = g_o_t;
6388 if (bfd_link_pic (info))
6390 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6392 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6393 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6395 if (info->emitrelocations)
6397 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6399 if (sda != NULL && sda->ref_regular)
6400 sda->root.u.def.section->flags |= SEC_KEEP;
6401 sda = htab->sdata[1].sym;
6402 if (sda != NULL && sda->ref_regular)
6403 sda->root.u.def.section->flags |= SEC_KEEP;
6406 if (htab->glink != NULL
6407 && htab->glink->size != 0
6408 && htab->elf.dynamic_sections_created)
6410 htab->glink_pltresolve = htab->glink->size;
6411 /* Space for the branch table. */
6413 += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
6414 /* Pad out to align the start of PLTresolve. */
6415 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6417 htab->glink->size += GLINK_PLTRESOLVE;
6419 if (htab->params->emit_stub_syms)
6421 struct elf_link_hash_entry *sh;
6422 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6423 TRUE, FALSE, FALSE);
6426 if (sh->root.type == bfd_link_hash_new)
6428 sh->root.type = bfd_link_hash_defined;
6429 sh->root.u.def.section = htab->glink;
6430 sh->root.u.def.value = htab->glink_pltresolve;
6431 sh->ref_regular = 1;
6432 sh->def_regular = 1;
6433 sh->ref_regular_nonweak = 1;
6434 sh->forced_local = 1;
6436 sh->root.linker_def = 1;
6438 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6439 TRUE, FALSE, FALSE);
6442 if (sh->root.type == bfd_link_hash_new)
6444 sh->root.type = bfd_link_hash_defined;
6445 sh->root.u.def.section = htab->glink;
6446 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6447 sh->ref_regular = 1;
6448 sh->def_regular = 1;
6449 sh->ref_regular_nonweak = 1;
6450 sh->forced_local = 1;
6452 sh->root.linker_def = 1;
6457 if (htab->glink != NULL
6458 && htab->glink->size != 0
6459 && htab->glink_eh_frame != NULL
6460 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6461 && _bfd_elf_eh_frame_present (info))
6463 s = htab->glink_eh_frame;
6464 s->size = sizeof (glink_eh_frame_cie) + 20;
6465 if (bfd_link_pic (info))
6468 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6473 /* We've now determined the sizes of the various dynamic sections.
6474 Allocate memory for them. */
6476 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6478 bfd_boolean strip_section = TRUE;
6480 if ((s->flags & SEC_LINKER_CREATED) == 0)
6483 if (s == htab->elf.splt
6484 || s == htab->elf.sgot)
6486 /* We'd like to strip these sections if they aren't needed, but if
6487 we've exported dynamic symbols from them we must leave them.
6488 It's too late to tell BFD to get rid of the symbols. */
6489 if (htab->elf.hplt != NULL)
6490 strip_section = FALSE;
6491 /* Strip this section if we don't need it; see the
6494 else if (s == htab->elf.iplt
6496 || s == htab->glink_eh_frame
6497 || s == htab->elf.sgotplt
6499 || s == htab->elf.sdynbss
6500 || s == htab->elf.sdynrelro
6501 || s == htab->dynsbss)
6503 /* Strip these too. */
6505 else if (s == htab->sdata[0].section
6506 || s == htab->sdata[1].section)
6508 strip_section = (s->flags & SEC_KEEP) == 0;
6510 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6515 /* Remember whether there are any relocation sections. */
6518 /* We use the reloc_count field as a counter if we need
6519 to copy relocs into the output file. */
6525 /* It's not one of our sections, so don't allocate space. */
6529 if (s->size == 0 && strip_section)
6531 /* If we don't need this section, strip it from the
6532 output file. This is mostly to handle .rela.bss and
6533 .rela.plt. We must create both sections in
6534 create_dynamic_sections, because they must be created
6535 before the linker maps input sections to output
6536 sections. The linker does that before
6537 adjust_dynamic_symbol is called, and it is that
6538 function which decides whether anything needs to go
6539 into these sections. */
6540 s->flags |= SEC_EXCLUDE;
6544 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6547 /* Allocate memory for the section contents. */
6548 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6549 if (s->contents == NULL)
6553 if (htab->elf.dynamic_sections_created)
6555 /* Add some entries to the .dynamic section. We fill in the
6556 values later, in ppc_elf_finish_dynamic_sections, but we
6557 must add the entries now so that we get the correct size for
6558 the .dynamic section. The DT_DEBUG entry is filled in by the
6559 dynamic linker and used by the debugger. */
6560 #define add_dynamic_entry(TAG, VAL) \
6561 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6563 if (bfd_link_executable (info))
6565 if (!add_dynamic_entry (DT_DEBUG, 0))
6569 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6571 if (!add_dynamic_entry (DT_PLTGOT, 0)
6572 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6573 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6574 || !add_dynamic_entry (DT_JMPREL, 0))
6578 if (htab->plt_type == PLT_NEW
6579 && htab->glink != NULL
6580 && htab->glink->size != 0)
6582 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6584 if (!htab->params->no_tls_get_addr_opt
6585 && htab->tls_get_addr != NULL
6586 && htab->tls_get_addr->plt.plist != NULL
6587 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6593 if (!add_dynamic_entry (DT_RELA, 0)
6594 || !add_dynamic_entry (DT_RELASZ, 0)
6595 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6599 /* If any dynamic relocs apply to a read-only section, then we
6600 need a DT_TEXTREL entry. */
6601 if ((info->flags & DF_TEXTREL) == 0)
6602 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6605 if ((info->flags & DF_TEXTREL) != 0)
6607 if (!add_dynamic_entry (DT_TEXTREL, 0))
6610 if (htab->is_vxworks
6611 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6614 #undef add_dynamic_entry
6616 if (htab->glink_eh_frame != NULL
6617 && htab->glink_eh_frame->contents != NULL)
6619 unsigned char *p = htab->glink_eh_frame->contents;
6622 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6623 /* CIE length (rewrite in case little-endian). */
6624 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6625 p += sizeof (glink_eh_frame_cie);
6627 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6628 bfd_put_32 (htab->elf.dynobj, val, p);
6631 val = p - htab->glink_eh_frame->contents;
6632 bfd_put_32 (htab->elf.dynobj, val, p);
6634 /* Offset to .glink. Set later. */
6637 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6642 if (bfd_link_pic (info)
6643 && htab->elf.dynamic_sections_created)
6645 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6647 *p++ = DW_CFA_advance_loc + adv;
6650 *p++ = DW_CFA_advance_loc1;
6653 else if (adv < 65536)
6655 *p++ = DW_CFA_advance_loc2;
6656 bfd_put_16 (htab->elf.dynobj, adv, p);
6661 *p++ = DW_CFA_advance_loc4;
6662 bfd_put_32 (htab->elf.dynobj, adv, p);
6665 *p++ = DW_CFA_register;
6668 *p++ = DW_CFA_advance_loc + 4;
6669 *p++ = DW_CFA_restore_extended;
6672 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6673 == htab->glink_eh_frame->size);
6679 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6680 if it looks like nothing is using them. */
6683 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6685 struct elf_link_hash_entry *sda = lsect->sym;
6687 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6691 s = bfd_get_section_by_name (output_bfd, lsect->name);
6692 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6694 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6695 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6697 sda->def_regular = 0;
6698 /* This is somewhat magic. See elf_link_output_extsym. */
6699 sda->ref_dynamic = 1;
6700 sda->forced_local = 0;
6707 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6709 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6713 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6714 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6719 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6722 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6724 if (h->plt.plist != NULL
6726 && (!h->pointer_equality_needed
6727 || !h->ref_regular_nonweak))
6730 return _bfd_elf_hash_symbol (h);
6733 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6735 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6736 used for some functions that are allowed to break the ABI). */
6737 static const int shared_stub_entry[] =
6739 0x7c0802a6, /* mflr 0 */
6740 0x429f0005, /* bcl 20, 31, .Lxxx */
6741 0x7d8802a6, /* mflr 12 */
6742 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6743 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6744 0x7c0803a6, /* mtlr 0 */
6745 0x7d8903a6, /* mtctr 12 */
6746 0x4e800420, /* bctr */
6749 static const int stub_entry[] =
6751 0x3d800000, /* lis 12,xxx@ha */
6752 0x398c0000, /* addi 12,12,xxx@l */
6753 0x7d8903a6, /* mtctr 12 */
6754 0x4e800420, /* bctr */
6757 struct ppc_elf_relax_info
6759 unsigned int workaround_size;
6760 unsigned int picfixup_size;
6763 /* This function implements long branch trampolines, and the ppc476
6764 icache bug workaround. Any section needing trampolines or patch
6765 space for the workaround has its size extended so that we can
6766 add trampolines at the end of the section. */
6769 ppc_elf_relax_section (bfd *abfd,
6771 struct bfd_link_info *link_info,
6774 struct one_branch_fixup
6776 struct one_branch_fixup *next;
6778 /* Final link, can use the symbol offset. For a
6779 relocatable link we use the symbol's index. */
6784 Elf_Internal_Shdr *symtab_hdr;
6785 bfd_byte *contents = NULL;
6786 Elf_Internal_Sym *isymbuf = NULL;
6787 Elf_Internal_Rela *internal_relocs = NULL;
6788 Elf_Internal_Rela *irel, *irelend = NULL;
6789 struct one_branch_fixup *branch_fixups = NULL;
6790 struct ppc_elf_relax_info *relax_info = NULL;
6791 unsigned changes = 0;
6792 bfd_boolean workaround_change;
6793 struct ppc_elf_link_hash_table *htab;
6794 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6796 bfd_boolean maybe_pasted;
6800 /* No need to do anything with non-alloc or non-code sections. */
6801 if ((isec->flags & SEC_ALLOC) == 0
6802 || (isec->flags & SEC_CODE) == 0
6803 || (isec->flags & SEC_LINKER_CREATED) != 0
6807 /* We cannot represent the required PIC relocs in the output, so don't
6808 do anything. The linker doesn't support mixing -shared and -r
6810 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6813 htab = ppc_elf_hash_table (link_info);
6817 isec->size = (isec->size + 3) & -4;
6818 if (isec->rawsize == 0)
6819 isec->rawsize = isec->size;
6820 trampbase = isec->size;
6822 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6823 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6824 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6826 if (htab->params->ppc476_workaround
6827 || htab->params->pic_fixup > 0)
6829 if (elf_section_data (isec)->sec_info == NULL)
6831 elf_section_data (isec)->sec_info
6832 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6833 if (elf_section_data (isec)->sec_info == NULL)
6836 relax_info = elf_section_data (isec)->sec_info;
6837 trampbase -= relax_info->workaround_size;
6840 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6841 || strcmp (isec->output_section->name, ".fini") == 0);
6842 /* Space for a branch around any trampolines. */
6843 trampoff = trampbase;
6844 if (maybe_pasted && trampbase == isec->rawsize)
6847 symtab_hdr = &elf_symtab_hdr (abfd);
6849 if (htab->params->branch_trampolines
6850 || htab->params->pic_fixup > 0)
6852 /* Get a copy of the native relocations. */
6853 if (isec->reloc_count != 0)
6855 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6856 link_info->keep_memory);
6857 if (internal_relocs == NULL)
6861 got2 = bfd_get_section_by_name (abfd, ".got2");
6863 irelend = internal_relocs + isec->reloc_count;
6864 for (irel = internal_relocs; irel < irelend; irel++)
6866 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6869 struct one_branch_fixup *f;
6870 size_t insn_offset = 0;
6871 bfd_vma max_branch_offset = 0, val;
6874 struct elf_link_hash_entry *h;
6875 struct plt_entry **plist;
6876 unsigned char sym_type;
6881 case R_PPC_LOCAL24PC:
6882 case R_PPC_PLTREL24:
6883 max_branch_offset = 1 << 25;
6887 case R_PPC_REL14_BRTAKEN:
6888 case R_PPC_REL14_BRNTAKEN:
6889 max_branch_offset = 1 << 15;
6892 case R_PPC_ADDR16_HA:
6893 if (htab->params->pic_fixup > 0)
6901 /* Get the value of the symbol referred to by the reloc. */
6903 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6905 /* A local symbol. */
6906 Elf_Internal_Sym *isym;
6908 /* Read this BFD's local symbols. */
6909 if (isymbuf == NULL)
6911 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6912 if (isymbuf == NULL)
6913 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6914 symtab_hdr->sh_info, 0,
6919 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6920 if (isym->st_shndx == SHN_UNDEF)
6921 tsec = bfd_und_section_ptr;
6922 else if (isym->st_shndx == SHN_ABS)
6923 tsec = bfd_abs_section_ptr;
6924 else if (isym->st_shndx == SHN_COMMON)
6925 tsec = bfd_com_section_ptr;
6927 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6929 toff = isym->st_value;
6930 sym_type = ELF_ST_TYPE (isym->st_info);
6934 /* Global symbol handling. */
6937 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6938 h = elf_sym_hashes (abfd)[indx];
6940 while (h->root.type == bfd_link_hash_indirect
6941 || h->root.type == bfd_link_hash_warning)
6942 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6944 if (h->root.type == bfd_link_hash_defined
6945 || h->root.type == bfd_link_hash_defweak)
6947 tsec = h->root.u.def.section;
6948 toff = h->root.u.def.value;
6950 else if (h->root.type == bfd_link_hash_undefined
6951 || h->root.type == bfd_link_hash_undefweak)
6953 tsec = bfd_und_section_ptr;
6954 toff = bfd_link_relocatable (link_info) ? indx : 0;
6959 /* If this branch is to __tls_get_addr then we may later
6960 optimise away the call. We won't be needing a long-
6961 branch stub in that case. */
6962 if (bfd_link_executable (link_info)
6963 && h == htab->tls_get_addr
6964 && irel != internal_relocs)
6966 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6967 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6968 unsigned int tls_mask = 0;
6970 /* The previous reloc should be one of R_PPC_TLSGD or
6971 R_PPC_TLSLD, or for older object files, a reloc
6972 on the __tls_get_addr arg setup insn. Get tls
6973 mask bits from the symbol on that reloc. */
6974 if (t_symndx < symtab_hdr->sh_info)
6976 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6978 if (local_got_offsets != NULL)
6980 struct plt_entry **local_plt = (struct plt_entry **)
6981 (local_got_offsets + symtab_hdr->sh_info);
6982 char *lgot_masks = (char *)
6983 (local_plt + symtab_hdr->sh_info);
6984 tls_mask = lgot_masks[t_symndx];
6989 struct elf_link_hash_entry *th
6990 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6992 while (th->root.type == bfd_link_hash_indirect
6993 || th->root.type == bfd_link_hash_warning)
6994 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6997 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7000 /* The mask bits tell us if the call will be
7002 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7003 && (t_rtype == R_PPC_TLSGD
7004 || t_rtype == R_PPC_GOT_TLSGD16
7005 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7007 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7008 && (t_rtype == R_PPC_TLSLD
7009 || t_rtype == R_PPC_GOT_TLSLD16
7010 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7017 if (r_type == R_PPC_ADDR16_HA)
7022 && ppc_elf_hash_entry (h)->has_addr16_ha
7023 && ppc_elf_hash_entry (h)->has_addr16_lo)
7024 picfixup_size += 12;
7028 /* The condition here under which we call find_plt_ent must
7029 match that in relocate_section. If we call find_plt_ent here
7030 but not in relocate_section, or vice versa, then the branch
7031 destination used here may be incorrect. */
7035 /* We know is_branch_reloc (r_type) is true. */
7036 if (h->type == STT_GNU_IFUNC
7037 || r_type == R_PPC_PLTREL24)
7038 plist = &h->plt.plist;
7040 else if (sym_type == STT_GNU_IFUNC
7041 && elf_local_got_offsets (abfd) != NULL)
7043 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7044 struct plt_entry **local_plt = (struct plt_entry **)
7045 (local_got_offsets + symtab_hdr->sh_info);
7046 plist = local_plt + ELF32_R_SYM (irel->r_info);
7051 struct plt_entry *ent;
7053 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7054 addend = irel->r_addend;
7055 ent = find_plt_ent (plist, got2, addend);
7058 if (htab->plt_type == PLT_NEW
7060 || !htab->elf.dynamic_sections_created
7061 || h->dynindx == -1)
7064 toff = ent->glink_offset;
7068 tsec = htab->elf.splt;
7069 toff = ent->plt.offset;
7074 /* If the branch and target are in the same section, you have
7075 no hope of adding stubs. We'll error out later should the
7080 /* There probably isn't any reason to handle symbols in
7081 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7082 attribute for a code section, and we are only looking at
7083 branches. However, implement it correctly here as a
7084 reference for other target relax_section functions. */
7085 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7087 /* At this stage in linking, no SEC_MERGE symbol has been
7088 adjusted, so all references to such symbols need to be
7089 passed through _bfd_merged_section_offset. (Later, in
7090 relocate_section, all SEC_MERGE symbols *except* for
7091 section symbols have been adjusted.)
7093 gas may reduce relocations against symbols in SEC_MERGE
7094 sections to a relocation against the section symbol when
7095 the original addend was zero. When the reloc is against
7096 a section symbol we should include the addend in the
7097 offset passed to _bfd_merged_section_offset, since the
7098 location of interest is the original symbol. On the
7099 other hand, an access to "sym+addend" where "sym" is not
7100 a section symbol should not include the addend; Such an
7101 access is presumed to be an offset from "sym"; The
7102 location of interest is just "sym". */
7103 if (sym_type == STT_SECTION)
7104 toff += irel->r_addend;
7107 = _bfd_merged_section_offset (abfd, &tsec,
7108 elf_section_data (tsec)->sec_info,
7111 if (sym_type != STT_SECTION)
7112 toff += irel->r_addend;
7114 /* PLTREL24 addends are special. */
7115 else if (r_type != R_PPC_PLTREL24)
7116 toff += irel->r_addend;
7118 /* Attempted -shared link of non-pic code loses. */
7119 if ((!bfd_link_relocatable (link_info)
7120 && tsec == bfd_und_section_ptr)
7121 || tsec->output_section == NULL
7122 || (tsec->owner != NULL
7123 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7126 roff = irel->r_offset;
7128 /* If the branch is in range, no need to do anything. */
7129 if (tsec != bfd_und_section_ptr
7130 && (!bfd_link_relocatable (link_info)
7131 /* A relocatable link may have sections moved during
7132 final link, so do not presume they remain in range. */
7133 || tsec->output_section == isec->output_section))
7135 bfd_vma symaddr, reladdr;
7137 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7138 reladdr = isec->output_section->vma + isec->output_offset + roff;
7139 if (symaddr - reladdr + max_branch_offset
7140 < 2 * max_branch_offset)
7144 /* Look for an existing fixup to this address. */
7145 for (f = branch_fixups; f ; f = f->next)
7146 if (f->tsec == tsec && f->toff == toff)
7152 unsigned long stub_rtype;
7154 val = trampoff - roff;
7155 if (val >= max_branch_offset)
7156 /* Oh dear, we can't reach a trampoline. Don't try to add
7157 one. We'll report an error later. */
7160 if (bfd_link_pic (link_info))
7162 size = 4 * ARRAY_SIZE (shared_stub_entry);
7167 size = 4 * ARRAY_SIZE (stub_entry);
7170 stub_rtype = R_PPC_RELAX;
7171 if (tsec == htab->elf.splt
7172 || tsec == htab->glink)
7174 stub_rtype = R_PPC_RELAX_PLT;
7175 if (r_type == R_PPC_PLTREL24)
7176 stub_rtype = R_PPC_RELAX_PLTREL24;
7179 /* Hijack the old relocation. Since we need two
7180 relocations for this use a "composite" reloc. */
7181 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7183 irel->r_offset = trampoff + insn_offset;
7184 if (r_type == R_PPC_PLTREL24
7185 && stub_rtype != R_PPC_RELAX_PLTREL24)
7188 /* Record the fixup so we don't do it again this section. */
7189 f = bfd_malloc (sizeof (*f));
7190 f->next = branch_fixups;
7193 f->trampoff = trampoff;
7201 val = f->trampoff - roff;
7202 if (val >= max_branch_offset)
7205 /* Nop out the reloc, since we're finalizing things here. */
7206 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7209 /* Get the section contents. */
7210 if (contents == NULL)
7212 /* Get cached copy if it exists. */
7213 if (elf_section_data (isec)->this_hdr.contents != NULL)
7214 contents = elf_section_data (isec)->this_hdr.contents;
7215 /* Go get them off disk. */
7216 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7220 /* Fix up the existing branch to hit the trampoline. */
7221 hit_addr = contents + roff;
7225 case R_PPC_LOCAL24PC:
7226 case R_PPC_PLTREL24:
7227 t0 = bfd_get_32 (abfd, hit_addr);
7229 t0 |= val & 0x3fffffc;
7230 bfd_put_32 (abfd, t0, hit_addr);
7234 case R_PPC_REL14_BRTAKEN:
7235 case R_PPC_REL14_BRNTAKEN:
7236 t0 = bfd_get_32 (abfd, hit_addr);
7239 bfd_put_32 (abfd, t0, hit_addr);
7244 while (branch_fixups != NULL)
7246 struct one_branch_fixup *f = branch_fixups;
7247 branch_fixups = branch_fixups->next;
7252 workaround_change = FALSE;
7254 if (htab->params->ppc476_workaround
7255 && (!bfd_link_relocatable (link_info)
7256 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7258 bfd_vma addr, end_addr;
7259 unsigned int crossings;
7260 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7262 addr = isec->output_section->vma + isec->output_offset;
7263 end_addr = addr + trampoff;
7265 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7268 /* Keep space aligned, to ensure the patch code itself does
7269 not cross a page. Don't decrease size calculated on a
7270 previous pass as otherwise we might never settle on a layout. */
7271 newsize = 15 - ((end_addr - 1) & 15);
7272 newsize += crossings * 16;
7273 if (relax_info->workaround_size < newsize)
7275 relax_info->workaround_size = newsize;
7276 workaround_change = TRUE;
7278 /* Ensure relocate_section is called. */
7279 isec->flags |= SEC_RELOC;
7281 newsize = trampoff + relax_info->workaround_size;
7284 if (htab->params->pic_fixup > 0)
7286 picfixup_size -= relax_info->picfixup_size;
7287 if (picfixup_size != 0)
7288 relax_info->picfixup_size += picfixup_size;
7289 newsize += relax_info->picfixup_size;
7292 if (changes != 0 || picfixup_size != 0 || workaround_change)
7293 isec->size = newsize;
7296 && symtab_hdr->contents != (unsigned char *) isymbuf)
7298 if (! link_info->keep_memory)
7302 /* Cache the symbols for elf_link_input_bfd. */
7303 symtab_hdr->contents = (unsigned char *) isymbuf;
7307 if (contents != NULL
7308 && elf_section_data (isec)->this_hdr.contents != contents)
7310 if (!changes && !link_info->keep_memory)
7314 /* Cache the section contents for elf_link_input_bfd. */
7315 elf_section_data (isec)->this_hdr.contents = contents;
7319 changes += picfixup_size;
7322 /* Append sufficient NOP relocs so we can write out relocation
7323 information for the trampolines. */
7324 Elf_Internal_Shdr *rel_hdr;
7325 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7326 * sizeof (*new_relocs));
7331 memcpy (new_relocs, internal_relocs,
7332 isec->reloc_count * sizeof (*new_relocs));
7333 for (ix = changes; ix--;)
7335 irel = new_relocs + ix + isec->reloc_count;
7337 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7339 if (internal_relocs != elf_section_data (isec)->relocs)
7340 free (internal_relocs);
7341 elf_section_data (isec)->relocs = new_relocs;
7342 isec->reloc_count += changes;
7343 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7344 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7346 else if (internal_relocs != NULL
7347 && elf_section_data (isec)->relocs != internal_relocs)
7348 free (internal_relocs);
7350 *again = changes != 0 || workaround_change;
7354 while (branch_fixups != NULL)
7356 struct one_branch_fixup *f = branch_fixups;
7357 branch_fixups = branch_fixups->next;
7360 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7362 if (contents != NULL
7363 && elf_section_data (isec)->this_hdr.contents != contents)
7365 if (internal_relocs != NULL
7366 && elf_section_data (isec)->relocs != internal_relocs)
7367 free (internal_relocs);
7371 /* What to do when ld finds relocations against symbols defined in
7372 discarded sections. */
7375 ppc_elf_action_discarded (asection *sec)
7377 if (strcmp (".fixup", sec->name) == 0)
7380 if (strcmp (".got2", sec->name) == 0)
7383 return _bfd_elf_default_action_discarded (sec);
7386 /* Fill in the address for a pointer generated in a linker section. */
7389 elf_finish_pointer_linker_section (bfd *input_bfd,
7390 elf_linker_section_t *lsect,
7391 struct elf_link_hash_entry *h,
7393 const Elf_Internal_Rela *rel)
7395 elf_linker_section_pointers_t *linker_section_ptr;
7397 BFD_ASSERT (lsect != NULL);
7401 /* Handle global symbol. */
7402 struct ppc_elf_link_hash_entry *eh;
7404 eh = (struct ppc_elf_link_hash_entry *) h;
7405 BFD_ASSERT (eh->elf.def_regular);
7406 linker_section_ptr = eh->linker_section_pointer;
7410 /* Handle local symbol. */
7411 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7413 BFD_ASSERT (is_ppc_elf (input_bfd));
7414 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7415 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7418 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7421 BFD_ASSERT (linker_section_ptr != NULL);
7423 /* Offset will always be a multiple of four, so use the bottom bit
7424 as a "written" flag. */
7425 if ((linker_section_ptr->offset & 1) == 0)
7427 bfd_put_32 (lsect->section->owner,
7428 relocation + linker_section_ptr->addend,
7429 lsect->section->contents + linker_section_ptr->offset);
7430 linker_section_ptr->offset += 1;
7433 relocation = (lsect->section->output_section->vma
7434 + lsect->section->output_offset
7435 + linker_section_ptr->offset - 1
7436 - SYM_VAL (lsect->sym));
7440 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7441 lsect->name, (long) relocation, (long) relocation);
7447 #define PPC_LO(v) ((v) & 0xffff)
7448 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7449 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7452 write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
7453 asection *plt_sec, unsigned char *p,
7454 struct bfd_link_info *info)
7456 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7457 bfd *output_bfd = info->output_bfd;
7459 unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
7462 && h == htab->tls_get_addr
7463 && !htab->params->no_tls_get_addr_opt)
7465 bfd_put_32 (output_bfd, LWZ_11_3, p);
7467 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
7469 bfd_put_32 (output_bfd, MR_0_3, p);
7471 bfd_put_32 (output_bfd, CMPWI_11_0, p);
7473 bfd_put_32 (output_bfd, ADD_3_12_2, p);
7475 bfd_put_32 (output_bfd, BEQLR, p);
7477 bfd_put_32 (output_bfd, MR_3_0, p);
7479 bfd_put_32 (output_bfd, NOP, p);
7483 plt = ((ent->plt.offset & ~1)
7484 + plt_sec->output_section->vma
7485 + plt_sec->output_offset);
7487 if (bfd_link_pic (info))
7491 if (ent->addend >= 32768)
7493 + ent->sec->output_section->vma
7494 + ent->sec->output_offset);
7495 else if (htab->elf.hgot != NULL)
7496 got = SYM_VAL (htab->elf.hgot);
7500 if (plt + 0x8000 < 0x10000)
7501 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7504 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7506 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7511 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7513 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7516 bfd_put_32 (output_bfd, MTCTR_11, p);
7518 bfd_put_32 (output_bfd, BCTR, p);
7522 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7527 /* Return true if symbol is defined statically. */
7530 is_static_defined (struct elf_link_hash_entry *h)
7532 return ((h->root.type == bfd_link_hash_defined
7533 || h->root.type == bfd_link_hash_defweak)
7534 && h->root.u.def.section != NULL
7535 && h->root.u.def.section->output_section != NULL);
7538 /* If INSN is an opcode that may be used with an @tls operand, return
7539 the transformed insn for TLS optimisation, otherwise return 0. If
7540 REG is non-zero only match an insn with RB or RA equal to REG. */
7543 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7547 if ((insn & (0x3f << 26)) != 31 << 26)
7550 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7551 rtra = insn & ((1 << 26) - (1 << 16));
7552 else if (((insn >> 16) & 0x1f) == reg)
7553 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7557 if ((insn & (0x3ff << 1)) == 266 << 1)
7560 else if ((insn & (0x1f << 1)) == 23 << 1
7561 && ((insn & (0x1f << 6)) < 14 << 6
7562 || ((insn & (0x1f << 6)) >= 16 << 6
7563 && (insn & (0x1f << 6)) < 24 << 6)))
7564 /* load and store indexed -> dform. */
7565 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7566 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7567 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7568 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7569 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7571 insn = (58 << 26) | 2;
7578 /* If INSN is an opcode that may be used with an @tprel operand, return
7579 the transformed insn for an undefined weak symbol, ie. with the
7580 thread pointer REG operand removed. Otherwise return 0. */
7583 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7585 if ((insn & (0x1f << 16)) == reg << 16
7586 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7587 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7588 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7589 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7590 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7591 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7592 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7593 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7594 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7595 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7596 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7597 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7598 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7599 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7600 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7601 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7603 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7604 && ((insn & 3) == 0 || (insn & 3) == 3))))
7606 insn &= ~(0x1f << 16);
7608 else if ((insn & (0x1f << 21)) == reg << 21
7609 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7610 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7611 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7613 insn &= ~(0x1f << 21);
7614 insn |= (insn & (0x1f << 16)) << 5;
7615 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7616 insn -= 2 >> 26; /* convert to ori,oris */
7624 is_insn_ds_form (unsigned int insn)
7626 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7627 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7628 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7629 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7633 is_insn_dq_form (unsigned int insn)
7635 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7636 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7637 && (insn & 3) == 1));
7640 /* The RELOCATE_SECTION function is called by the ELF backend linker
7641 to handle the relocations for a section.
7643 The relocs are always passed as Rela structures; if the section
7644 actually uses Rel structures, the r_addend field will always be
7647 This function is responsible for adjust the section contents as
7648 necessary, and (if using Rela relocs and generating a
7649 relocatable output file) adjusting the reloc addend as
7652 This function does not have to worry about setting the reloc
7653 address or the reloc symbol index.
7655 LOCAL_SYMS is a pointer to the swapped in local symbols.
7657 LOCAL_SECTIONS is an array giving the section in the input file
7658 corresponding to the st_shndx field of each local symbol.
7660 The global hash table entry for the global symbols can be found
7661 via elf_sym_hashes (input_bfd).
7663 When generating relocatable output, this function must handle
7664 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7665 going to be the section symbol corresponding to the output
7666 section, which means that the addend must be adjusted
7670 ppc_elf_relocate_section (bfd *output_bfd,
7671 struct bfd_link_info *info,
7673 asection *input_section,
7675 Elf_Internal_Rela *relocs,
7676 Elf_Internal_Sym *local_syms,
7677 asection **local_sections)
7679 Elf_Internal_Shdr *symtab_hdr;
7680 struct elf_link_hash_entry **sym_hashes;
7681 struct ppc_elf_link_hash_table *htab;
7682 Elf_Internal_Rela *rel;
7683 Elf_Internal_Rela *wrel;
7684 Elf_Internal_Rela *relend;
7685 Elf_Internal_Rela outrel;
7687 bfd_vma *local_got_offsets;
7688 bfd_boolean ret = TRUE;
7689 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7690 bfd_boolean is_vxworks_tls;
7691 unsigned int picfixup_size = 0;
7692 struct ppc_elf_relax_info *relax_info = NULL;
7695 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7696 "%ld relocations%s",
7697 input_bfd, input_section,
7698 (long) input_section->reloc_count,
7699 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7702 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7704 /* Initialize howto table if not already done. */
7705 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7706 ppc_elf_howto_init ();
7708 htab = ppc_elf_hash_table (info);
7709 local_got_offsets = elf_local_got_offsets (input_bfd);
7710 symtab_hdr = &elf_symtab_hdr (input_bfd);
7711 sym_hashes = elf_sym_hashes (input_bfd);
7712 /* We have to handle relocations in vxworks .tls_vars sections
7713 specially, because the dynamic loader is 'weird'. */
7714 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7715 && !strcmp (input_section->output_section->name,
7717 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7718 relax_info = elf_section_data (input_section)->sec_info;
7719 rel = wrel = relocs;
7720 relend = relocs + input_section->reloc_count;
7721 for (; rel < relend; wrel++, rel++)
7723 enum elf_ppc_reloc_type r_type;
7725 bfd_reloc_status_type r;
7726 Elf_Internal_Sym *sym;
7728 struct elf_link_hash_entry *h;
7729 const char *sym_name;
7730 reloc_howto_type *howto;
7731 unsigned long r_symndx;
7733 bfd_vma branch_bit, from;
7734 bfd_boolean unresolved_reloc;
7736 unsigned int tls_type, tls_mask, tls_gd;
7737 struct plt_entry **ifunc;
7738 struct reloc_howto_struct alt_howto;
7741 r_type = ELF32_R_TYPE (rel->r_info);
7745 unresolved_reloc = FALSE;
7747 r_symndx = ELF32_R_SYM (rel->r_info);
7749 if (r_symndx < symtab_hdr->sh_info)
7751 sym = local_syms + r_symndx;
7752 sec = local_sections[r_symndx];
7753 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7755 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7759 bfd_boolean ignored;
7761 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7762 r_symndx, symtab_hdr, sym_hashes,
7764 unresolved_reloc, warned, ignored);
7766 sym_name = h->root.root.string;
7769 if (sec != NULL && discarded_section (sec))
7771 /* For relocs against symbols from removed linkonce sections,
7772 or sections discarded by a linker script, we just want the
7773 section contents zeroed. Avoid any special processing. */
7775 if (r_type < R_PPC_max)
7776 howto = ppc_elf_howto_table[r_type];
7778 _bfd_clear_contents (howto, input_bfd, input_section,
7779 contents + rel->r_offset);
7780 wrel->r_offset = rel->r_offset;
7784 /* For ld -r, remove relocations in debug sections against
7785 symbols defined in discarded sections. Not done for
7786 non-debug to preserve relocs in .eh_frame which the
7787 eh_frame editing code expects to be present. */
7788 if (bfd_link_relocatable (info)
7789 && (input_section->flags & SEC_DEBUGGING))
7795 if (bfd_link_relocatable (info))
7798 && r_type == R_PPC_PLTREL24
7799 && rel->r_addend != 0)
7801 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7802 addend specifies the GOT pointer offset within .got2. */
7803 rel->r_addend += got2->output_offset;
7805 if (r_type != R_PPC_RELAX_PLT
7806 && r_type != R_PPC_RELAX_PLTREL24
7807 && r_type != R_PPC_RELAX)
7811 /* TLS optimizations. Replace instruction sequences and relocs
7812 based on information we collected in tls_optimize. We edit
7813 RELOCS so that --emit-relocs will output something sensible
7814 for the final instruction stream. */
7818 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7819 else if (local_got_offsets != NULL)
7821 struct plt_entry **local_plt;
7824 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7825 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7826 tls_mask = lgot_masks[r_symndx];
7829 /* Ensure reloc mapping code below stays sane. */
7830 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7831 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7832 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7833 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7834 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7835 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7836 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7837 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7844 case R_PPC_GOT_TPREL16:
7845 case R_PPC_GOT_TPREL16_LO:
7846 if ((tls_mask & TLS_TLS) != 0
7847 && (tls_mask & TLS_TPREL) == 0)
7851 insn = bfd_get_32 (input_bfd,
7852 contents + rel->r_offset - d_offset);
7854 insn |= 0x3c020000; /* addis 0,2,0 */
7855 bfd_put_32 (input_bfd, insn,
7856 contents + rel->r_offset - d_offset);
7857 r_type = R_PPC_TPREL16_HA;
7858 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7863 if ((tls_mask & TLS_TLS) != 0
7864 && (tls_mask & TLS_TPREL) == 0)
7868 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7869 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7872 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7873 r_type = R_PPC_TPREL16_LO;
7874 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7876 /* Was PPC_TLS which sits on insn boundary, now
7877 PPC_TPREL16_LO which is at low-order half-word. */
7878 rel->r_offset += d_offset;
7882 case R_PPC_GOT_TLSGD16_HI:
7883 case R_PPC_GOT_TLSGD16_HA:
7884 tls_gd = TLS_TPRELGD;
7885 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7889 case R_PPC_GOT_TLSLD16_HI:
7890 case R_PPC_GOT_TLSLD16_HA:
7891 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7894 if ((tls_mask & tls_gd) != 0)
7895 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7896 + R_PPC_GOT_TPREL16);
7899 rel->r_offset -= d_offset;
7900 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7901 r_type = R_PPC_NONE;
7903 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7907 case R_PPC_GOT_TLSGD16:
7908 case R_PPC_GOT_TLSGD16_LO:
7909 tls_gd = TLS_TPRELGD;
7910 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7914 case R_PPC_GOT_TLSLD16:
7915 case R_PPC_GOT_TLSLD16_LO:
7916 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7918 unsigned int insn1, insn2;
7922 offset = (bfd_vma) -1;
7923 /* If not using the newer R_PPC_TLSGD/LD to mark
7924 __tls_get_addr calls, we must trust that the call
7925 stays with its arg setup insns, ie. that the next
7926 reloc is the __tls_get_addr call associated with
7927 the current reloc. Edit both insns. */
7928 if (input_section->has_tls_get_addr_call
7930 && branch_reloc_hash_match (input_bfd, rel + 1,
7931 htab->tls_get_addr))
7932 offset = rel[1].r_offset;
7933 /* We read the low GOT_TLS insn because we need to keep
7934 the destination reg. It may be something other than
7935 the usual r3, and moved to r3 before the call by
7936 intervening code. */
7937 insn1 = bfd_get_32 (input_bfd,
7938 contents + rel->r_offset - d_offset);
7939 if ((tls_mask & tls_gd) != 0)
7942 insn1 &= (0x1f << 21) | (0x1f << 16);
7943 insn1 |= 32 << 26; /* lwz */
7944 if (offset != (bfd_vma) -1)
7946 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7947 insn2 = 0x7c631214; /* add 3,3,2 */
7948 bfd_put_32 (input_bfd, insn2, contents + offset);
7950 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7951 + R_PPC_GOT_TPREL16);
7952 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7957 insn1 &= 0x1f << 21;
7958 insn1 |= 0x3c020000; /* addis r,2,0 */
7961 /* Was an LD reloc. */
7963 r_symndx < symtab_hdr->sh_info;
7965 if (local_sections[r_symndx] == sec)
7967 if (r_symndx >= symtab_hdr->sh_info)
7968 r_symndx = STN_UNDEF;
7969 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7970 if (r_symndx != STN_UNDEF)
7971 rel->r_addend -= (local_syms[r_symndx].st_value
7972 + sec->output_offset
7973 + sec->output_section->vma);
7975 r_type = R_PPC_TPREL16_HA;
7976 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7977 if (offset != (bfd_vma) -1)
7979 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7980 rel[1].r_offset = offset + d_offset;
7981 rel[1].r_addend = rel->r_addend;
7982 insn2 = 0x38630000; /* addi 3,3,0 */
7983 bfd_put_32 (input_bfd, insn2, contents + offset);
7986 bfd_put_32 (input_bfd, insn1,
7987 contents + rel->r_offset - d_offset);
7990 /* We changed the symbol on an LD reloc. Start over
7991 in order to get h, sym, sec etc. right. */
7998 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8001 bfd_vma offset = rel->r_offset;
8003 if ((tls_mask & TLS_TPRELGD) != 0)
8006 r_type = R_PPC_NONE;
8007 insn2 = 0x7c631214; /* add 3,3,2 */
8012 r_type = R_PPC_TPREL16_LO;
8013 rel->r_offset += d_offset;
8014 insn2 = 0x38630000; /* addi 3,3,0 */
8016 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8017 bfd_put_32 (input_bfd, insn2, contents + offset);
8018 /* Zap the reloc on the _tls_get_addr call too. */
8019 BFD_ASSERT (offset == rel[1].r_offset);
8020 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8025 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8030 r_symndx < symtab_hdr->sh_info;
8032 if (local_sections[r_symndx] == sec)
8034 if (r_symndx >= symtab_hdr->sh_info)
8035 r_symndx = STN_UNDEF;
8036 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8037 if (r_symndx != STN_UNDEF)
8038 rel->r_addend -= (local_syms[r_symndx].st_value
8039 + sec->output_offset
8040 + sec->output_section->vma);
8042 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8043 rel->r_offset += d_offset;
8044 insn2 = 0x38630000; /* addi 3,3,0 */
8045 bfd_put_32 (input_bfd, insn2,
8046 contents + rel->r_offset - d_offset);
8047 /* Zap the reloc on the _tls_get_addr call too. */
8048 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8049 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8055 /* Handle other relocations that tweak non-addend part of insn. */
8062 /* Branch taken prediction relocations. */
8063 case R_PPC_ADDR14_BRTAKEN:
8064 case R_PPC_REL14_BRTAKEN:
8065 branch_bit = BRANCH_PREDICT_BIT;
8068 /* Branch not taken prediction relocations. */
8069 case R_PPC_ADDR14_BRNTAKEN:
8070 case R_PPC_REL14_BRNTAKEN:
8074 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8075 insn &= ~BRANCH_PREDICT_BIT;
8078 from = (rel->r_offset
8079 + input_section->output_offset
8080 + input_section->output_section->vma);
8082 /* Invert 'y' bit if not the default. */
8083 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8084 insn ^= BRANCH_PREDICT_BIT;
8086 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8091 if (ELIMINATE_COPY_RELOCS
8095 && ppc_elf_hash_entry (h)->has_addr16_ha
8096 && ppc_elf_hash_entry (h)->has_addr16_lo
8097 && htab->params->pic_fixup > 0)
8099 /* Convert lis;addi or lis;load/store accessing a protected
8100 variable defined in a shared library to PIC. */
8103 if (r_type == R_PPC_ADDR16_HA)
8105 insn = bfd_get_32 (input_bfd,
8106 contents + rel->r_offset - d_offset);
8107 if ((insn & (0x3f << 26)) == (15u << 26)
8108 && (insn & (0x1f << 16)) == 0 /* lis */)
8114 p = (contents + input_section->size
8115 - relax_info->workaround_size
8116 - relax_info->picfixup_size
8118 off = (p - contents) - (rel->r_offset - d_offset);
8119 if (off > 0x1fffffc || (off & 3) != 0)
8120 info->callbacks->einfo
8121 (_("%H: fixup branch overflow\n"),
8122 input_bfd, input_section, rel->r_offset);
8124 bfd_put_32 (input_bfd, B | off,
8125 contents + rel->r_offset - d_offset);
8126 got_addr = (htab->elf.sgot->output_section->vma
8127 + htab->elf.sgot->output_offset
8128 + (h->got.offset & ~1));
8129 wrel->r_offset = (p - contents) + d_offset;
8130 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8131 wrel->r_addend = got_addr;
8133 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8134 bfd_put_32 (input_bfd, insn, p);
8136 /* Convert lis to lwz, loading address from GOT. */
8138 insn ^= (32u ^ 15u) << 26;
8139 insn |= (insn & (0x1f << 21)) >> 5;
8140 insn |= got_addr & 0xffff;
8141 bfd_put_32 (input_bfd, insn, p + 4);
8143 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8144 picfixup_size += 12;
8146 /* Use one of the spare relocs, so --emit-relocs
8147 output is reasonable. */
8148 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8150 rel->r_offset = wrel[-1].r_offset + 4;
8151 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8152 rel->r_addend = wrel[-1].r_addend;
8154 /* Continue on as if we had a got reloc, to output
8156 r_type = R_PPC_GOT16_LO;
8160 /* xgettext:c-format */
8161 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8162 input_bfd, input_section, rel->r_offset,
8163 "R_PPC_ADDR16_HA", insn);
8165 else if (r_type == R_PPC_ADDR16_LO)
8167 insn = bfd_get_32 (input_bfd,
8168 contents + rel->r_offset - d_offset);
8169 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8170 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8171 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8172 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8173 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8174 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8175 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8176 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8177 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8178 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8179 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8180 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8181 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8182 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8183 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8185 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8186 && ((insn & 3) == 0 || (insn & 3) == 3)))
8188 /* Arrange to apply the reloc addend, if any. */
8190 unresolved_reloc = FALSE;
8191 rel->r_info = ELF32_R_INFO (0, r_type);
8195 /* xgettext:c-format */
8196 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8197 input_bfd, input_section, rel->r_offset,
8198 "R_PPC_ADDR16_LO", insn);
8203 if (!htab->is_vxworks)
8205 struct plt_entry *ent;
8209 if (h->type == STT_GNU_IFUNC)
8210 ifunc = &h->plt.plist;
8212 else if (local_got_offsets != NULL
8213 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8215 struct plt_entry **local_plt;
8217 local_plt = (struct plt_entry **) (local_got_offsets
8218 + symtab_hdr->sh_info);
8219 ifunc = local_plt + r_symndx;
8224 && (!bfd_link_pic (info)
8225 || is_branch_reloc (r_type)))
8228 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8229 addend = rel->r_addend;
8230 ent = find_plt_ent (ifunc, got2, addend);
8234 if (bfd_link_pic (info)
8236 && htab->plt_type != PLT_NEW
8237 && (!htab->elf.dynamic_sections_created
8239 || h->dynindx == -1))
8241 /* Uh oh, we are going to create a pic glink stub
8242 for an ifunc (here for h == NULL and later in
8243 finish_dynamic_symbol for h != NULL), and
8244 apparently are using code compiled with
8245 -mbss-plt. The difficulty is that -mbss-plt code
8246 gives no indication via a magic PLTREL24 addend
8247 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8248 is pointing into a .got2 section (and how far
8250 info->callbacks->einfo
8251 /* xgettext:c-format */
8252 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8253 input_bfd, input_section, rel->r_offset, sym_name);
8255 if (h == NULL && (ent->plt.offset & 1) == 0)
8257 Elf_Internal_Rela rela;
8260 rela.r_offset = (htab->elf.iplt->output_section->vma
8261 + htab->elf.iplt->output_offset
8263 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8264 rela.r_addend = relocation;
8265 loc = htab->elf.irelplt->contents;
8266 loc += (htab->elf.irelplt->reloc_count++
8267 * sizeof (Elf32_External_Rela));
8268 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8269 htab->local_ifunc_resolver = 1;
8271 ent->plt.offset |= 1;
8273 if (h == NULL && (ent->glink_offset & 1) == 0)
8275 unsigned char *p = ((unsigned char *) htab->glink->contents
8276 + ent->glink_offset);
8278 write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
8279 ent->glink_offset |= 1;
8282 unresolved_reloc = FALSE;
8283 if (htab->plt_type == PLT_NEW
8284 || !htab->elf.dynamic_sections_created
8286 || h->dynindx == -1)
8287 relocation = (htab->glink->output_section->vma
8288 + htab->glink->output_offset
8289 + (ent->glink_offset & ~1));
8291 relocation = (htab->elf.splt->output_section->vma
8292 + htab->elf.splt->output_offset
8297 addend = rel->r_addend;
8299 if (r_type < R_PPC_max)
8300 howto = ppc_elf_howto_table[r_type];
8307 case R_PPC_TPREL16_HA:
8308 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8310 bfd_byte *p = contents + (rel->r_offset & ~3);
8311 unsigned int insn = bfd_get_32 (input_bfd, p);
8312 if ((insn & ((0x3f << 26) | 0x1f << 16))
8313 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8314 /* xgettext:c-format */
8315 info->callbacks->minfo
8316 (_("%H: warning: %s unexpected insn %#x.\n"),
8317 input_bfd, input_section, rel->r_offset, howto->name, insn);
8319 bfd_put_32 (input_bfd, NOP, p);
8323 case R_PPC_TPREL16_LO:
8324 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8326 bfd_byte *p = contents + (rel->r_offset & ~3);
8327 unsigned int insn = bfd_get_32 (input_bfd, p);
8328 insn &= ~(0x1f << 16);
8330 bfd_put_32 (input_bfd, insn, p);
8339 info->callbacks->einfo
8340 /* xgettext:c-format */
8341 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8342 input_bfd, (int) r_type, sym_name);
8344 bfd_set_error (bfd_error_bad_value);
8352 case R_PPC_EMB_MRKREF:
8353 case R_PPC_GNU_VTINHERIT:
8354 case R_PPC_GNU_VTENTRY:
8357 /* GOT16 relocations. Like an ADDR16 using the symbol's
8358 address in the GOT as relocation value instead of the
8359 symbol's value itself. Also, create a GOT entry for the
8360 symbol and put the symbol value there. */
8361 case R_PPC_GOT_TLSGD16:
8362 case R_PPC_GOT_TLSGD16_LO:
8363 case R_PPC_GOT_TLSGD16_HI:
8364 case R_PPC_GOT_TLSGD16_HA:
8365 tls_type = TLS_TLS | TLS_GD;
8368 case R_PPC_GOT_TLSLD16:
8369 case R_PPC_GOT_TLSLD16_LO:
8370 case R_PPC_GOT_TLSLD16_HI:
8371 case R_PPC_GOT_TLSLD16_HA:
8372 tls_type = TLS_TLS | TLS_LD;
8375 case R_PPC_GOT_TPREL16:
8376 case R_PPC_GOT_TPREL16_LO:
8377 case R_PPC_GOT_TPREL16_HI:
8378 case R_PPC_GOT_TPREL16_HA:
8379 tls_type = TLS_TLS | TLS_TPREL;
8382 case R_PPC_GOT_DTPREL16:
8383 case R_PPC_GOT_DTPREL16_LO:
8384 case R_PPC_GOT_DTPREL16_HI:
8385 case R_PPC_GOT_DTPREL16_HA:
8386 tls_type = TLS_TLS | TLS_DTPREL;
8390 case R_PPC_GOT16_LO:
8391 case R_PPC_GOT16_HI:
8392 case R_PPC_GOT16_HA:
8396 /* Relocation is to the entry for this symbol in the global
8402 if (htab->elf.sgot == NULL)
8406 if (tls_type == (TLS_TLS | TLS_LD)
8408 || !h->def_dynamic))
8409 offp = &htab->tlsld_got.offset;
8412 if (!htab->elf.dynamic_sections_created
8414 || SYMBOL_REFERENCES_LOCAL (info, h)
8415 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8416 /* This is actually a static link, or it is a
8417 -Bsymbolic link and the symbol is defined
8418 locally, or the symbol was forced to be local
8419 because of a version file. */
8424 unresolved_reloc = FALSE;
8426 offp = &h->got.offset;
8430 if (local_got_offsets == NULL)
8432 offp = &local_got_offsets[r_symndx];
8435 /* The offset must always be a multiple of 4. We use the
8436 least significant bit to record whether we have already
8437 processed this entry. */
8443 unsigned int tls_m = (tls_mask
8444 & (TLS_LD | TLS_GD | TLS_DTPREL
8445 | TLS_TPREL | TLS_TPRELGD));
8447 if (offp == &htab->tlsld_got.offset)
8453 /* We might have multiple got entries for this sym.
8454 Initialize them all. */
8459 if ((tls_m & TLS_LD) != 0)
8461 tls_ty = TLS_TLS | TLS_LD;
8464 else if ((tls_m & TLS_GD) != 0)
8466 tls_ty = TLS_TLS | TLS_GD;
8469 else if ((tls_m & TLS_DTPREL) != 0)
8471 tls_ty = TLS_TLS | TLS_DTPREL;
8472 tls_m &= ~TLS_DTPREL;
8474 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8476 tls_ty = TLS_TLS | TLS_TPREL;
8480 /* Generate relocs for the dynamic linker. */
8482 || (bfd_link_pic (info)
8484 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8485 || offp == &htab->tlsld_got.offset)
8486 && !(tls_ty == (TLS_TLS | TLS_TPREL)
8487 && bfd_link_executable (info)
8488 && SYMBOL_REFERENCES_LOCAL (info, h))))
8490 asection *rsec = htab->elf.srelgot;
8495 rsec = htab->elf.irelplt;
8497 htab->local_ifunc_resolver = 1;
8498 else if (is_static_defined (h))
8499 htab->maybe_local_ifunc_resolver = 1;
8501 outrel.r_offset = (htab->elf.sgot->output_section->vma
8502 + htab->elf.sgot->output_offset
8504 outrel.r_addend = 0;
8505 if (tls_ty & (TLS_LD | TLS_GD))
8507 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8508 if (tls_ty == (TLS_TLS | TLS_GD))
8510 loc = rsec->contents;
8511 loc += (rsec->reloc_count++
8512 * sizeof (Elf32_External_Rela));
8513 bfd_elf32_swap_reloca_out (output_bfd,
8515 outrel.r_offset += 4;
8517 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8520 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8521 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8522 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8523 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8525 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8526 else if (ifunc != NULL)
8527 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8529 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8530 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8532 outrel.r_addend += relocation;
8533 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8535 if (htab->elf.tls_sec == NULL)
8536 outrel.r_addend = 0;
8538 outrel.r_addend -= htab->elf.tls_sec->vma;
8541 loc = rsec->contents;
8542 loc += (rsec->reloc_count++
8543 * sizeof (Elf32_External_Rela));
8544 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8547 /* Init the .got section contents if we're not
8548 emitting a reloc. */
8551 bfd_vma value = relocation;
8555 if (htab->elf.tls_sec == NULL)
8559 if (tls_ty & TLS_LD)
8562 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8563 if (tls_ty & TLS_TPREL)
8564 value += DTP_OFFSET - TP_OFFSET;
8567 if (tls_ty & (TLS_LD | TLS_GD))
8569 bfd_put_32 (input_bfd, value,
8570 htab->elf.sgot->contents + off + 4);
8574 bfd_put_32 (input_bfd, value,
8575 htab->elf.sgot->contents + off);
8579 if (tls_ty & (TLS_LD | TLS_GD))
8588 if (off >= (bfd_vma) -2)
8591 if ((tls_type & TLS_TLS) != 0)
8593 if (tls_type != (TLS_TLS | TLS_LD))
8595 if ((tls_mask & TLS_LD) != 0
8597 || !h->def_dynamic))
8599 if (tls_type != (TLS_TLS | TLS_GD))
8601 if ((tls_mask & TLS_GD) != 0)
8603 if (tls_type != (TLS_TLS | TLS_DTPREL))
8605 if ((tls_mask & TLS_DTPREL) != 0)
8612 /* If here for a picfixup, we're done. */
8613 if (r_type != ELF32_R_TYPE (rel->r_info))
8616 relocation = (htab->elf.sgot->output_section->vma
8617 + htab->elf.sgot->output_offset
8619 - SYM_VAL (htab->elf.hgot));
8621 /* Addends on got relocations don't make much sense.
8622 x+off@got is actually x@got+off, and since the got is
8623 generated by a hash table traversal, the value in the
8624 got at entry m+n bears little relation to the entry m. */
8626 info->callbacks->einfo
8627 /* xgettext:c-format */
8628 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8629 input_bfd, input_section, rel->r_offset,
8635 /* Relocations that need no special processing. */
8636 case R_PPC_LOCAL24PC:
8637 /* It makes no sense to point a local relocation
8638 at a symbol not in this object. */
8639 if (unresolved_reloc)
8641 (*info->callbacks->undefined_symbol) (info,
8642 h->root.root.string,
8649 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8651 /* @local on an ifunc does not really make sense since
8652 the ifunc resolver can take you anywhere. More
8653 seriously, calls to ifuncs must go through a plt call
8654 stub, and for pic the plt call stubs uses r30 to
8655 access the PLT. The problem is that a call that is
8656 local won't have the +32k reloc addend trick marking
8657 -fPIC code, so the linker won't know whether r30 is
8658 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8659 /* xgettext:c-format */
8660 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8661 input_bfd, input_section, rel->r_offset,
8662 h->root.root.string);
8666 case R_PPC_DTPREL16:
8667 case R_PPC_DTPREL16_LO:
8668 case R_PPC_DTPREL16_HI:
8669 case R_PPC_DTPREL16_HA:
8670 if (htab->elf.tls_sec != NULL)
8671 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8674 /* Relocations that may need to be propagated if this is a shared
8677 case R_PPC_TPREL16_LO:
8678 case R_PPC_TPREL16_HI:
8679 case R_PPC_TPREL16_HA:
8681 && h->root.type == bfd_link_hash_undefweak
8682 && h->dynindx == -1)
8684 /* Make this relocation against an undefined weak symbol
8685 resolve to zero. This is really just a tweak, since
8686 code using weak externs ought to check that they are
8687 defined before using them. */
8688 bfd_byte *p = contents + rel->r_offset - d_offset;
8689 unsigned int insn = bfd_get_32 (input_bfd, p);
8690 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8692 bfd_put_32 (input_bfd, insn, p);
8695 if (htab->elf.tls_sec != NULL)
8696 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8697 /* The TPREL16 relocs shouldn't really be used in shared
8698 libs or with non-local symbols as that will result in
8699 DT_TEXTREL being set, but support them anyway. */
8703 if (htab->elf.tls_sec != NULL)
8704 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8707 case R_PPC_DTPREL32:
8708 if (htab->elf.tls_sec != NULL)
8709 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8712 case R_PPC_DTPMOD32:
8718 case R_PPC_REL16_LO:
8719 case R_PPC_REL16_HI:
8720 case R_PPC_REL16_HA:
8721 case R_PPC_REL16DX_HA:
8725 if (h == NULL || h == htab->elf.hgot)
8731 case R_PPC_ADDR16_LO:
8732 case R_PPC_ADDR16_HI:
8733 case R_PPC_ADDR16_HA:
8738 case R_PPC_VLE_REL8:
8739 case R_PPC_VLE_REL15:
8740 case R_PPC_VLE_REL24:
8743 case R_PPC_REL14_BRTAKEN:
8744 case R_PPC_REL14_BRNTAKEN:
8745 /* If these relocations are not to a named symbol, they can be
8746 handled right here, no need to bother the dynamic linker. */
8747 if (SYMBOL_CALLS_LOCAL (info, h)
8748 || h == htab->elf.hgot)
8754 case R_PPC_ADDR14_BRTAKEN:
8755 case R_PPC_ADDR14_BRNTAKEN:
8756 if (h != NULL && !bfd_link_pic (info))
8761 if ((input_section->flags & SEC_ALLOC) == 0
8765 if (bfd_link_pic (info)
8767 || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
8768 && ((h != NULL && pc_dynrelocs (h))
8769 || must_be_dyn_reloc (info, r_type)))
8771 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
8779 fprintf (stderr, "ppc_elf_relocate_section needs to "
8780 "create relocation for %s\n",
8781 (h && h->root.root.string
8782 ? h->root.root.string : "<unknown>"));
8785 /* When generating a shared object, these relocations
8786 are copied into the output file to be resolved at run
8789 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8792 if (outrel.r_offset == (bfd_vma) -1
8793 || outrel.r_offset == (bfd_vma) -2)
8794 skip = (int) outrel.r_offset;
8795 outrel.r_offset += (input_section->output_section->vma
8796 + input_section->output_offset);
8799 memset (&outrel, 0, sizeof outrel);
8800 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8803 BFD_ASSERT (indx != -1);
8804 unresolved_reloc = FALSE;
8805 outrel.r_info = ELF32_R_INFO (indx, r_type);
8806 outrel.r_addend = rel->r_addend;
8810 outrel.r_addend = relocation + rel->r_addend;
8812 if (r_type != R_PPC_ADDR32)
8816 /* If we get here when building a static
8817 executable, then the libc startup function
8818 responsible for applying indirect function
8819 relocations is going to complain about
8821 If we get here when building a dynamic
8822 executable, it will be because we have
8823 a text relocation. The dynamic loader
8824 will set the text segment writable and
8825 non-executable to apply text relocations.
8826 So we'll segfault when trying to run the
8827 indirection function to resolve the reloc. */
8828 info->callbacks->einfo
8829 /* xgettext:c-format */
8830 (_("%H: relocation %s for indirect "
8831 "function %s unsupported\n"),
8832 input_bfd, input_section, rel->r_offset,
8837 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8839 else if (sec == NULL || sec->owner == NULL)
8841 bfd_set_error (bfd_error_bad_value);
8848 /* We are turning this relocation into one
8849 against a section symbol. It would be
8850 proper to subtract the symbol's value,
8851 osec->vma, from the emitted reloc addend,
8852 but ld.so expects buggy relocs.
8853 FIXME: Why not always use a zero index? */
8854 osec = sec->output_section;
8855 indx = elf_section_data (osec)->dynindx;
8858 osec = htab->elf.text_index_section;
8859 indx = elf_section_data (osec)->dynindx;
8861 BFD_ASSERT (indx != 0);
8864 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8865 indx, osec->name, osec->flags,
8866 h->root.root.string);
8870 outrel.r_info = ELF32_R_INFO (indx, r_type);
8872 else if (ifunc != NULL)
8873 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8875 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8878 sreloc = elf_section_data (input_section)->sreloc;
8881 sreloc = htab->elf.irelplt;
8883 htab->local_ifunc_resolver = 1;
8884 else if (is_static_defined (h))
8885 htab->maybe_local_ifunc_resolver = 1;
8890 loc = sreloc->contents;
8891 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8892 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8897 /* This reloc will be computed at runtime. Clear the memory
8898 so that it contains a predictable value for prelink. */
8901 relocation = howto->pc_relative ? outrel.r_offset : 0;
8908 case R_PPC_RELAX_PLT:
8909 case R_PPC_RELAX_PLTREL24:
8912 struct plt_entry *ent;
8913 bfd_vma got2_addend = 0;
8915 if (r_type == R_PPC_RELAX_PLTREL24)
8917 if (bfd_link_pic (info))
8918 got2_addend = addend;
8921 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8922 if (htab->plt_type == PLT_NEW)
8923 relocation = (htab->glink->output_section->vma
8924 + htab->glink->output_offset
8925 + ent->glink_offset);
8927 relocation = (htab->elf.splt->output_section->vma
8928 + htab->elf.splt->output_offset
8937 size_t insn_offset = rel->r_offset;
8940 if (bfd_link_pic (info))
8942 relocation -= (input_section->output_section->vma
8943 + input_section->output_offset
8944 + rel->r_offset - 4);
8945 stub = shared_stub_entry;
8946 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8947 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8948 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
8950 size = ARRAY_SIZE (shared_stub_entry) - 3;
8955 size = ARRAY_SIZE (stub_entry);
8958 relocation += addend;
8959 if (bfd_link_relocatable (info))
8962 /* First insn is HA, second is LO. */
8964 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8965 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8969 insn |= relocation & 0xffff;
8970 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8978 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8982 /* Rewrite the reloc and convert one of the trailing nop
8983 relocs to describe this relocation. */
8984 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8985 /* The relocs are at the bottom 2 bytes */
8986 wrel->r_offset = rel->r_offset + d_offset;
8987 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8988 wrel->r_addend = rel->r_addend;
8989 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8991 wrel->r_offset += 4;
8992 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8996 /* Indirect .sdata relocation. */
8997 case R_PPC_EMB_SDAI16:
8998 BFD_ASSERT (htab->sdata[0].section != NULL);
8999 if (!is_static_defined (htab->sdata[0].sym))
9001 unresolved_reloc = TRUE;
9005 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9006 h, relocation, rel);
9010 /* Indirect .sdata2 relocation. */
9011 case R_PPC_EMB_SDA2I16:
9012 BFD_ASSERT (htab->sdata[1].section != NULL);
9013 if (!is_static_defined (htab->sdata[1].sym))
9015 unresolved_reloc = TRUE;
9019 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9020 h, relocation, rel);
9024 /* Handle the TOC16 reloc. We want to use the offset within the .got
9025 section, not the actual VMA. This is appropriate when generating
9026 an embedded ELF object, for which the .got section acts like the
9027 AIX .toc section. */
9028 case R_PPC_TOC16: /* phony GOT16 relocations */
9029 if (sec == NULL || sec->output_section == NULL)
9031 unresolved_reloc = TRUE;
9034 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9036 || strcmp (bfd_get_section_name (sec->owner, sec),
9039 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9042 case R_PPC_PLTREL24:
9043 if (h != NULL && ifunc == NULL)
9045 struct plt_entry *ent;
9047 ent = find_plt_ent (&h->plt.plist, got2,
9048 bfd_link_pic (info) ? addend : 0);
9050 || htab->elf.splt == NULL)
9052 /* We didn't make a PLT entry for this symbol. This
9053 happens when statically linking PIC code, or when
9054 using -Bsymbolic. */
9058 /* Relocation is to the entry for this symbol in the
9059 procedure linkage table. */
9060 unresolved_reloc = FALSE;
9061 if (htab->plt_type == PLT_NEW)
9062 relocation = (htab->glink->output_section->vma
9063 + htab->glink->output_offset
9064 + ent->glink_offset);
9066 relocation = (htab->elf.splt->output_section->vma
9067 + htab->elf.splt->output_offset
9072 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9073 addend specifies the GOT pointer offset within .got2.
9074 Don't apply it to the relocation field. */
9078 /* Relocate against _SDA_BASE_. */
9079 case R_PPC_SDAREL16:
9082 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9085 || sec->output_section == NULL
9086 || !is_static_defined (sda))
9088 unresolved_reloc = TRUE;
9091 addend -= SYM_VAL (sda);
9093 name = bfd_get_section_name (output_bfd, sec->output_section);
9094 if (!(strcmp (name, ".sdata") == 0
9095 || strcmp (name, ".sbss") == 0))
9097 info->callbacks->einfo
9098 /* xgettext:c-format */
9099 (_("%P: %B: the target (%s) of a %s relocation is "
9100 "in the wrong output section (%s)\n"),
9109 /* Relocate against _SDA2_BASE_. */
9110 case R_PPC_EMB_SDA2REL:
9113 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9116 || sec->output_section == NULL
9117 || !is_static_defined (sda))
9119 unresolved_reloc = TRUE;
9122 addend -= SYM_VAL (sda);
9124 name = bfd_get_section_name (output_bfd, sec->output_section);
9125 if (!(strcmp (name, ".sdata2") == 0
9126 || strcmp (name, ".sbss2") == 0))
9128 info->callbacks->einfo
9129 /* xgettext:c-format */
9130 (_("%P: %B: the target (%s) of a %s relocation is "
9131 "in the wrong output section (%s)\n"),
9140 case R_PPC_VLE_LO16A:
9141 relocation = relocation + addend;
9142 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9143 contents + rel->r_offset, relocation,
9144 split16a_type, htab->params->vle_reloc_fixup);
9147 case R_PPC_VLE_LO16D:
9148 relocation = relocation + addend;
9149 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9150 contents + rel->r_offset, relocation,
9151 split16d_type, htab->params->vle_reloc_fixup);
9154 case R_PPC_VLE_HI16A:
9155 relocation = (relocation + addend) >> 16;
9156 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9157 contents + rel->r_offset, relocation,
9158 split16a_type, htab->params->vle_reloc_fixup);
9161 case R_PPC_VLE_HI16D:
9162 relocation = (relocation + addend) >> 16;
9163 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9164 contents + rel->r_offset, relocation,
9165 split16d_type, htab->params->vle_reloc_fixup);
9168 case R_PPC_VLE_HA16A:
9169 relocation = (relocation + addend + 0x8000) >> 16;
9170 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9171 contents + rel->r_offset, relocation,
9172 split16a_type, htab->params->vle_reloc_fixup);
9175 case R_PPC_VLE_HA16D:
9176 relocation = (relocation + addend + 0x8000) >> 16;
9177 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9178 contents + rel->r_offset, relocation,
9179 split16d_type, htab->params->vle_reloc_fixup);
9182 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9183 case R_PPC_EMB_SDA21:
9184 case R_PPC_VLE_SDA21:
9185 case R_PPC_EMB_RELSDA:
9186 case R_PPC_VLE_SDA21_LO:
9191 struct elf_link_hash_entry *sda = NULL;
9193 if (sec == NULL || sec->output_section == NULL)
9195 unresolved_reloc = TRUE;
9199 name = bfd_get_section_name (output_bfd, sec->output_section);
9200 if (strcmp (name, ".sdata") == 0
9201 || strcmp (name, ".sbss") == 0)
9204 sda = htab->sdata[0].sym;
9206 else if (strcmp (name, ".sdata2") == 0
9207 || strcmp (name, ".sbss2") == 0)
9210 sda = htab->sdata[1].sym;
9212 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9213 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9219 info->callbacks->einfo
9220 /* xgettext:c-format */
9221 (_("%P: %B: the target (%s) of a %s relocation is "
9222 "in the wrong output section (%s)\n"),
9228 bfd_set_error (bfd_error_bad_value);
9235 if (!is_static_defined (sda))
9237 unresolved_reloc = TRUE;
9240 addend -= SYM_VAL (sda);
9243 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9245 && (r_type == R_PPC_VLE_SDA21
9246 || r_type == R_PPC_VLE_SDA21_LO))
9248 relocation = relocation + addend;
9251 /* Force e_li insn, keeping RT from original insn. */
9255 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9256 /* Top 4 bits of value to 17..20. */
9257 insn |= (relocation & 0xf0000) >> 5;
9258 /* Next 5 bits of the value to 11..15. */
9259 insn |= (relocation & 0xf800) << 5;
9260 /* And the final 11 bits of the value to bits 21 to 31. */
9261 insn |= relocation & 0x7ff;
9263 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9265 if (r_type == R_PPC_VLE_SDA21
9266 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9270 else if (r_type == R_PPC_EMB_SDA21
9271 || r_type == R_PPC_VLE_SDA21
9272 || r_type == R_PPC_VLE_SDA21_LO)
9274 /* Fill in register field. */
9275 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9277 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9281 case R_PPC_VLE_SDAREL_LO16A:
9282 case R_PPC_VLE_SDAREL_LO16D:
9283 case R_PPC_VLE_SDAREL_HI16A:
9284 case R_PPC_VLE_SDAREL_HI16D:
9285 case R_PPC_VLE_SDAREL_HA16A:
9286 case R_PPC_VLE_SDAREL_HA16D:
9290 struct elf_link_hash_entry *sda = NULL;
9292 if (sec == NULL || sec->output_section == NULL)
9294 unresolved_reloc = TRUE;
9298 name = bfd_get_section_name (output_bfd, sec->output_section);
9299 if (strcmp (name, ".sdata") == 0
9300 || strcmp (name, ".sbss") == 0)
9301 sda = htab->sdata[0].sym;
9302 else if (strcmp (name, ".sdata2") == 0
9303 || strcmp (name, ".sbss2") == 0)
9304 sda = htab->sdata[1].sym;
9308 /* xgettext:c-format */
9309 (_("%B: the target (%s) of a %s relocation is "
9310 "in the wrong output section (%s)"),
9316 bfd_set_error (bfd_error_bad_value);
9321 if (sda == NULL || !is_static_defined (sda))
9323 unresolved_reloc = TRUE;
9326 value = relocation + addend - SYM_VAL (sda);
9328 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9329 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9330 contents + rel->r_offset, value,
9332 htab->params->vle_reloc_fixup);
9333 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9334 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9335 contents + rel->r_offset, value,
9337 htab->params->vle_reloc_fixup);
9338 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9340 value = value >> 16;
9341 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9342 contents + rel->r_offset, value,
9344 htab->params->vle_reloc_fixup);
9346 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9348 value = value >> 16;
9349 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9350 contents + rel->r_offset, value,
9352 htab->params->vle_reloc_fixup);
9354 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9356 value = (value + 0x8000) >> 16;
9357 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9358 contents + rel->r_offset, value,
9360 htab->params->vle_reloc_fixup);
9362 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9364 value = (value + 0x8000) >> 16;
9365 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9366 contents + rel->r_offset, value,
9368 htab->params->vle_reloc_fixup);
9373 case R_PPC_VLE_ADDR20:
9374 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9377 /* Relocate against the beginning of the section. */
9379 case R_PPC_SECTOFF_LO:
9380 case R_PPC_SECTOFF_HI:
9381 case R_PPC_SECTOFF_HA:
9382 if (sec == NULL || sec->output_section == NULL)
9384 unresolved_reloc = TRUE;
9387 addend -= sec->output_section->vma;
9390 /* Negative relocations. */
9391 case R_PPC_EMB_NADDR32:
9392 case R_PPC_EMB_NADDR16:
9393 case R_PPC_EMB_NADDR16_LO:
9394 case R_PPC_EMB_NADDR16_HI:
9395 case R_PPC_EMB_NADDR16_HA:
9396 addend -= 2 * relocation;
9400 case R_PPC_GLOB_DAT:
9401 case R_PPC_JMP_SLOT:
9402 case R_PPC_RELATIVE:
9403 case R_PPC_IRELATIVE:
9405 case R_PPC_PLTREL32:
9406 case R_PPC_PLT16_LO:
9407 case R_PPC_PLT16_HI:
9408 case R_PPC_PLT16_HA:
9410 case R_PPC_EMB_RELSEC16:
9411 case R_PPC_EMB_RELST_LO:
9412 case R_PPC_EMB_RELST_HI:
9413 case R_PPC_EMB_RELST_HA:
9414 case R_PPC_EMB_BIT_FLD:
9415 info->callbacks->einfo
9416 /* xgettext:c-format */
9417 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
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 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10406 htab->elf.hgot->root.root.string,
10407 (htab->elf.sgotplt != NULL
10408 ? htab->elf.sgotplt->name
10409 : htab->elf.sgot->name));
10410 bfd_set_error (bfd_error_bad_value);
10414 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10417 /* Fill in the first entry in the VxWorks procedure linkage table. */
10418 if (htab->is_vxworks
10419 && htab->elf.splt != NULL
10420 && htab->elf.splt->size != 0
10421 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10423 asection *splt = htab->elf.splt;
10424 /* Use the right PLT. */
10425 const bfd_vma *plt_entry = (bfd_link_pic (info)
10426 ? ppc_elf_vxworks_pic_plt0_entry
10427 : ppc_elf_vxworks_plt0_entry);
10429 if (!bfd_link_pic (info))
10431 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10433 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10434 splt->contents + 0);
10435 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10436 splt->contents + 4);
10440 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10441 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10443 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10444 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10445 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10446 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10447 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10448 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10450 if (! bfd_link_pic (info))
10452 Elf_Internal_Rela rela;
10455 loc = htab->srelplt2->contents;
10457 /* Output the @ha relocation for the first instruction. */
10458 rela.r_offset = (htab->elf.splt->output_section->vma
10459 + htab->elf.splt->output_offset
10461 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10463 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10464 loc += sizeof (Elf32_External_Rela);
10466 /* Output the @l relocation for the second instruction. */
10467 rela.r_offset = (htab->elf.splt->output_section->vma
10468 + htab->elf.splt->output_offset
10470 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10472 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10473 loc += sizeof (Elf32_External_Rela);
10475 /* Fix up the remaining relocations. They may have the wrong
10476 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10477 in which symbols were output. */
10478 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10480 Elf_Internal_Rela rel;
10482 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10483 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10484 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10485 loc += sizeof (Elf32_External_Rela);
10487 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10488 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10489 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10490 loc += sizeof (Elf32_External_Rela);
10492 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10493 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10494 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10495 loc += sizeof (Elf32_External_Rela);
10500 if (htab->glink != NULL
10501 && htab->glink->contents != NULL
10502 && htab->elf.dynamic_sections_created)
10505 unsigned char *endp;
10509 * PIC glink code is the following:
10511 * # ith PLT code stub.
10512 * addis 11,30,(plt+(i-1)*4-got)@ha
10513 * lwz 11,(plt+(i-1)*4-got)@l(11)
10517 * # A table of branches, one for each plt entry.
10518 * # The idea is that the plt call stub loads ctr and r11 with these
10519 * # addresses, so (r11 - res_0) gives the plt index * 4.
10520 * res_0: b PLTresolve
10521 * res_1: b PLTresolve
10523 * # Some number of entries towards the end can be nops
10529 * addis 11,11,(1f-res_0)@ha
10532 * 1: addi 11,11,(1b-res_0)@l
10535 * sub 11,11,12 # r11 = index * 4
10536 * addis 12,12,(got+4-1b)@ha
10537 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10538 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10541 * add 11,0,11 # r11 = index * 12 = reloc offset.
10544 * Non-PIC glink code is a little simpler.
10546 * # ith PLT code stub.
10547 * lis 11,(plt+(i-1)*4)@ha
10548 * lwz 11,(plt+(i-1)*4)@l(11)
10552 * The branch table is the same, then comes
10555 * lis 12,(got+4)@ha
10556 * addis 11,11,(-res_0)@ha
10557 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10558 * addi 11,11,(-res_0)@l # r11 = index * 4
10561 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10562 * add 11,0,11 # r11 = index * 12 = reloc offset.
10566 /* Build the branch table, one for each plt entry (less one),
10567 and perhaps some padding. */
10568 p = htab->glink->contents;
10569 p += htab->glink_pltresolve;
10570 endp = htab->glink->contents;
10571 endp += htab->glink->size - GLINK_PLTRESOLVE;
10572 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10574 bfd_put_32 (output_bfd, B + endp - p, p);
10579 bfd_put_32 (output_bfd, NOP, p);
10583 res0 = (htab->glink_pltresolve
10584 + htab->glink->output_section->vma
10585 + htab->glink->output_offset);
10587 if (htab->params->ppc476_workaround)
10589 /* Ensure that a call stub at the end of a page doesn't
10590 result in prefetch over the end of the page into the
10591 glink branch table. */
10592 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10594 bfd_vma glink_start = (htab->glink->output_section->vma
10595 + htab->glink->output_offset);
10597 for (page_addr = res0 & -pagesize;
10598 page_addr > glink_start;
10599 page_addr -= pagesize)
10601 /* We have a plt call stub that may need fixing. */
10605 loc = htab->glink->contents + page_addr - 4 - glink_start;
10606 insn = bfd_get_32 (output_bfd, loc);
10609 /* By alignment, we know that there must be at least
10610 one other call stub before this one. */
10611 insn = bfd_get_32 (output_bfd, loc - 16);
10613 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10615 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10620 /* Last comes the PLTresolve stub. */
10621 endp = p + GLINK_PLTRESOLVE;
10622 if (bfd_link_pic (info))
10626 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10627 + htab->glink->output_section->vma
10628 + htab->glink->output_offset);
10630 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
10632 bfd_put_32 (output_bfd, MFLR_0, p);
10634 bfd_put_32 (output_bfd, BCL_20_31, p);
10636 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
10638 bfd_put_32 (output_bfd, MFLR_12, p);
10640 bfd_put_32 (output_bfd, MTLR_0, p);
10642 bfd_put_32 (output_bfd, SUB_11_11_12, p);
10644 bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
10646 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10648 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
10650 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
10655 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
10657 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10660 bfd_put_32 (output_bfd, MTCTR_0, p);
10662 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10666 bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
10668 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
10670 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10671 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
10673 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
10675 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
10677 bfd_put_32 (output_bfd, MTCTR_0, p);
10679 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10681 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10682 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
10684 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10687 bfd_put_32 (output_bfd, ADD_11_0_11, p);
10689 bfd_put_32 (output_bfd, BCTR, p);
10693 bfd_put_32 (output_bfd,
10694 htab->params->ppc476_workaround ? BA : NOP, p);
10697 BFD_ASSERT (p == endp);
10700 if (htab->glink_eh_frame != NULL
10701 && htab->glink_eh_frame->contents != NULL)
10703 unsigned char *p = htab->glink_eh_frame->contents;
10706 p += sizeof (glink_eh_frame_cie);
10711 /* Offset to .glink. */
10712 val = (htab->glink->output_section->vma
10713 + htab->glink->output_offset);
10714 val -= (htab->glink_eh_frame->output_section->vma
10715 + htab->glink_eh_frame->output_offset);
10716 val -= p - htab->glink_eh_frame->contents;
10717 bfd_put_32 (htab->elf.dynobj, val, p);
10719 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10720 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10721 htab->glink_eh_frame,
10722 htab->glink_eh_frame->contents))
10729 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10730 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10731 #define TARGET_BIG_SYM powerpc_elf32_vec
10732 #define TARGET_BIG_NAME "elf32-powerpc"
10733 #define ELF_ARCH bfd_arch_powerpc
10734 #define ELF_TARGET_ID PPC32_ELF_DATA
10735 #define ELF_MACHINE_CODE EM_PPC
10736 #ifdef __QNXTARGET__
10737 #define ELF_MAXPAGESIZE 0x1000
10738 #define ELF_COMMONPAGESIZE 0x1000
10740 #define ELF_MAXPAGESIZE 0x10000
10741 #define ELF_COMMONPAGESIZE 0x10000
10743 #define ELF_MINPAGESIZE 0x1000
10744 #define elf_info_to_howto ppc_elf_info_to_howto
10746 #ifdef EM_CYGNUS_POWERPC
10747 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10751 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10754 #define elf_backend_plt_not_loaded 1
10755 #define elf_backend_want_dynrelro 1
10756 #define elf_backend_can_gc_sections 1
10757 #define elf_backend_can_refcount 1
10758 #define elf_backend_rela_normal 1
10759 #define elf_backend_caches_rawsize 1
10761 #define bfd_elf32_mkobject ppc_elf_mkobject
10762 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10763 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10764 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10765 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10766 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10767 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10768 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10770 #define elf_backend_object_p ppc_elf_object_p
10771 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10772 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10773 #define elf_backend_relocate_section ppc_elf_relocate_section
10774 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10775 #define elf_backend_check_relocs ppc_elf_check_relocs
10776 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10777 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10778 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10779 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10780 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10781 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10782 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10783 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10784 #define elf_backend_fake_sections ppc_elf_fake_sections
10785 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10786 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10787 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10788 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10789 #define elf_backend_write_core_note ppc_elf_write_core_note
10790 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10791 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10792 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10793 #define elf_backend_write_section ppc_elf_write_section
10794 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10795 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10796 #define elf_backend_action_discarded ppc_elf_action_discarded
10797 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10798 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10800 #include "elf32-target.h"
10802 /* FreeBSD Target */
10804 #undef TARGET_LITTLE_SYM
10805 #undef TARGET_LITTLE_NAME
10807 #undef TARGET_BIG_SYM
10808 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10809 #undef TARGET_BIG_NAME
10810 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10813 #define ELF_OSABI ELFOSABI_FREEBSD
10816 #define elf32_bed elf32_powerpc_fbsd_bed
10818 #include "elf32-target.h"
10820 /* VxWorks Target */
10822 #undef TARGET_LITTLE_SYM
10823 #undef TARGET_LITTLE_NAME
10825 #undef TARGET_BIG_SYM
10826 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10827 #undef TARGET_BIG_NAME
10828 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10832 /* VxWorks uses the elf default section flags for .plt. */
10833 static const struct bfd_elf_special_section *
10834 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10836 if (sec->name == NULL)
10839 if (strcmp (sec->name, ".plt") == 0)
10840 return _bfd_elf_get_sec_type_attr (abfd, sec);
10842 return ppc_elf_get_sec_type_attr (abfd, sec);
10845 /* Like ppc_elf_link_hash_table_create, but overrides
10846 appropriately for VxWorks. */
10847 static struct bfd_link_hash_table *
10848 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10850 struct bfd_link_hash_table *ret;
10852 ret = ppc_elf_link_hash_table_create (abfd);
10855 struct ppc_elf_link_hash_table *htab
10856 = (struct ppc_elf_link_hash_table *)ret;
10857 htab->is_vxworks = 1;
10858 htab->plt_type = PLT_VXWORKS;
10859 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10860 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10861 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10866 /* Tweak magic VxWorks symbols as they are loaded. */
10868 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10869 struct bfd_link_info *info,
10870 Elf_Internal_Sym *sym,
10871 const char **namep,
10876 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10880 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10884 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10886 ppc_elf_final_write_processing (abfd, linker);
10887 elf_vxworks_final_write_processing (abfd, linker);
10890 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10892 #undef elf_backend_want_plt_sym
10893 #define elf_backend_want_plt_sym 1
10894 #undef elf_backend_want_got_plt
10895 #define elf_backend_want_got_plt 1
10896 #undef elf_backend_got_symbol_offset
10897 #define elf_backend_got_symbol_offset 0
10898 #undef elf_backend_plt_not_loaded
10899 #define elf_backend_plt_not_loaded 0
10900 #undef elf_backend_plt_readonly
10901 #define elf_backend_plt_readonly 1
10902 #undef elf_backend_got_header_size
10903 #define elf_backend_got_header_size 12
10904 #undef elf_backend_dtrel_excludes_plt
10905 #define elf_backend_dtrel_excludes_plt 1
10907 #undef bfd_elf32_get_synthetic_symtab
10909 #undef bfd_elf32_bfd_link_hash_table_create
10910 #define bfd_elf32_bfd_link_hash_table_create \
10911 ppc_elf_vxworks_link_hash_table_create
10912 #undef elf_backend_add_symbol_hook
10913 #define elf_backend_add_symbol_hook \
10914 ppc_elf_vxworks_add_symbol_hook
10915 #undef elf_backend_link_output_symbol_hook
10916 #define elf_backend_link_output_symbol_hook \
10917 elf_vxworks_link_output_symbol_hook
10918 #undef elf_backend_final_write_processing
10919 #define elf_backend_final_write_processing \
10920 ppc_elf_vxworks_final_write_processing
10921 #undef elf_backend_get_sec_type_attr
10922 #define elf_backend_get_sec_type_attr \
10923 ppc_elf_vxworks_get_sec_type_attr
10924 #undef elf_backend_emit_relocs
10925 #define elf_backend_emit_relocs \
10926 elf_vxworks_emit_relocs
10929 #define elf32_bed ppc_elf_vxworks_bed
10930 #undef elf_backend_post_process_headers
10932 #include "elf32-target.h"