1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2016 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"
39 typedef enum split16_format_type
46 /* RELA relocations are used here. */
48 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc_elf_unhandled_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 /* Branch prediction bit for branch taken relocs. */
54 #define BRANCH_PREDICT_BIT 0x200000
55 /* Mask to set RA in memory instructions. */
56 #define RA_REGISTER_MASK 0x001f0000
57 /* Value to shift register by to insert RA. */
58 #define RA_REGISTER_SHIFT 16
60 /* The name of the dynamic interpreter. This is put in the .interp
62 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64 /* For old-style PLT. */
65 /* The number of single-slot PLT entries (the rest use two slots). */
66 #define PLT_NUM_SINGLE_ENTRIES 8192
68 /* For new-style .glink and .plt. */
69 #define GLINK_PLTRESOLVE 16*4
70 #define GLINK_ENTRY_SIZE 4*4
71 #define TLS_GET_ADDR_GLINK_SIZE 12*4
73 /* VxWorks uses its own plt layout, filled in by the static linker. */
75 /* The standard VxWorks PLT entry. */
76 #define VXWORKS_PLT_ENTRY_SIZE 32
77 static const bfd_vma ppc_elf_vxworks_plt_entry
78 [VXWORKS_PLT_ENTRY_SIZE / 4] =
80 0x3d800000, /* lis r12,0 */
81 0x818c0000, /* lwz r12,0(r12) */
82 0x7d8903a6, /* mtctr r12 */
83 0x4e800420, /* bctr */
84 0x39600000, /* li r11,0 */
85 0x48000000, /* b 14 <.PLT0resolve+0x4> */
89 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
90 [VXWORKS_PLT_ENTRY_SIZE / 4] =
92 0x3d9e0000, /* addis r12,r30,0 */
93 0x818c0000, /* lwz r12,0(r12) */
94 0x7d8903a6, /* mtctr r12 */
95 0x4e800420, /* bctr */
96 0x39600000, /* li r11,0 */
97 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
102 /* The initial VxWorks PLT entry. */
103 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
104 static const bfd_vma ppc_elf_vxworks_plt0_entry
105 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
107 0x3d800000, /* lis r12,0 */
108 0x398c0000, /* addi r12,r12,0 */
109 0x800c0008, /* lwz r0,8(r12) */
110 0x7c0903a6, /* mtctr r0 */
111 0x818c0004, /* lwz r12,4(r12) */
112 0x4e800420, /* bctr */
113 0x60000000, /* nop */
114 0x60000000, /* nop */
116 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
117 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
119 0x819e0008, /* lwz r12,8(r30) */
120 0x7d8903a6, /* mtctr r12 */
121 0x819e0004, /* lwz r12,4(r30) */
122 0x4e800420, /* bctr */
123 0x60000000, /* nop */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
129 /* For executables, we have some additional relocations in
130 .rela.plt.unloaded, for the kernel loader. */
132 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
133 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
134 /* The number of relocations in the PLTResolve slot. */
135 #define VXWORKS_PLTRESOLVE_RELOCS 2
136 /* The number of relocations in the PLTResolve slot when when creating
138 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
140 /* Some instructions. */
141 #define ADDIS_11_11 0x3d6b0000
142 #define ADDIS_11_30 0x3d7e0000
143 #define ADDIS_12_12 0x3d8c0000
144 #define ADDI_11_11 0x396b0000
145 #define ADD_0_11_11 0x7c0b5a14
146 #define ADD_3_12_2 0x7c6c1214
147 #define ADD_11_0_11 0x7d605a14
149 #define BA 0x48000002
150 #define BCL_20_31 0x429f0005
151 #define BCTR 0x4e800420
152 #define BEQLR 0x4d820020
153 #define CMPWI_11_0 0x2c0b0000
154 #define LIS_11 0x3d600000
155 #define LIS_12 0x3d800000
156 #define LWZU_0_12 0x840c0000
157 #define LWZ_0_12 0x800c0000
158 #define LWZ_11_3 0x81630000
159 #define LWZ_11_11 0x816b0000
160 #define LWZ_11_30 0x817e0000
161 #define LWZ_12_3 0x81830000
162 #define LWZ_12_12 0x818c0000
163 #define MR_0_3 0x7c601b78
164 #define MR_3_0 0x7c030378
165 #define MFLR_0 0x7c0802a6
166 #define MFLR_12 0x7d8802a6
167 #define MTCTR_0 0x7c0903a6
168 #define MTCTR_11 0x7d6903a6
169 #define MTLR_0 0x7c0803a6
170 #define NOP 0x60000000
171 #define SUB_11_11_12 0x7d6c5850
173 /* Offset of tp and dtp pointers from start of TLS block. */
174 #define TP_OFFSET 0x7000
175 #define DTP_OFFSET 0x8000
177 /* The value of a defined global symbol. */
178 #define SYM_VAL(SYM) \
179 ((SYM)->root.u.def.section->output_section->vma \
180 + (SYM)->root.u.def.section->output_offset \
181 + (SYM)->root.u.def.value)
183 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
185 static reloc_howto_type ppc_elf_howto_raw[] = {
186 /* This reloc does nothing. */
187 HOWTO (R_PPC_NONE, /* type */
189 3, /* size (0 = byte, 1 = short, 2 = long) */
191 FALSE, /* pc_relative */
193 complain_overflow_dont, /* complain_on_overflow */
194 bfd_elf_generic_reloc, /* special_function */
195 "R_PPC_NONE", /* name */
196 FALSE, /* partial_inplace */
199 FALSE), /* pcrel_offset */
201 /* A standard 32 bit relocation. */
202 HOWTO (R_PPC_ADDR32, /* type */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
206 FALSE, /* pc_relative */
208 complain_overflow_dont, /* complain_on_overflow */
209 bfd_elf_generic_reloc, /* special_function */
210 "R_PPC_ADDR32", /* name */
211 FALSE, /* partial_inplace */
213 0xffffffff, /* dst_mask */
214 FALSE), /* pcrel_offset */
216 /* An absolute 26 bit branch; the lower two bits must be zero.
217 FIXME: we don't check that, we just clear them. */
218 HOWTO (R_PPC_ADDR24, /* type */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
222 FALSE, /* pc_relative */
224 complain_overflow_signed, /* complain_on_overflow */
225 bfd_elf_generic_reloc, /* special_function */
226 "R_PPC_ADDR24", /* name */
227 FALSE, /* partial_inplace */
229 0x3fffffc, /* dst_mask */
230 FALSE), /* pcrel_offset */
232 /* A standard 16 bit relocation. */
233 HOWTO (R_PPC_ADDR16, /* type */
235 1, /* size (0 = byte, 1 = short, 2 = long) */
237 FALSE, /* pc_relative */
239 complain_overflow_bitfield, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_PPC_ADDR16", /* name */
242 FALSE, /* partial_inplace */
244 0xffff, /* dst_mask */
245 FALSE), /* pcrel_offset */
247 /* A 16 bit relocation without overflow. */
248 HOWTO (R_PPC_ADDR16_LO, /* type */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
252 FALSE, /* pc_relative */
254 complain_overflow_dont,/* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_PPC_ADDR16_LO", /* name */
257 FALSE, /* partial_inplace */
259 0xffff, /* dst_mask */
260 FALSE), /* pcrel_offset */
262 /* The high order 16 bits of an address. */
263 HOWTO (R_PPC_ADDR16_HI, /* type */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
267 FALSE, /* pc_relative */
269 complain_overflow_dont, /* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_PPC_ADDR16_HI", /* name */
272 FALSE, /* partial_inplace */
274 0xffff, /* dst_mask */
275 FALSE), /* pcrel_offset */
277 /* The high order 16 bits of an address, plus 1 if the contents of
278 the low 16 bits, treated as a signed number, is negative. */
279 HOWTO (R_PPC_ADDR16_HA, /* type */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
283 FALSE, /* pc_relative */
285 complain_overflow_dont, /* complain_on_overflow */
286 ppc_elf_addr16_ha_reloc, /* special_function */
287 "R_PPC_ADDR16_HA", /* name */
288 FALSE, /* partial_inplace */
290 0xffff, /* dst_mask */
291 FALSE), /* pcrel_offset */
293 /* An absolute 16 bit branch; the lower two bits must be zero.
294 FIXME: we don't check that, we just clear them. */
295 HOWTO (R_PPC_ADDR14, /* type */
297 2, /* size (0 = byte, 1 = short, 2 = long) */
299 FALSE, /* pc_relative */
301 complain_overflow_signed, /* complain_on_overflow */
302 bfd_elf_generic_reloc, /* special_function */
303 "R_PPC_ADDR14", /* name */
304 FALSE, /* partial_inplace */
306 0xfffc, /* dst_mask */
307 FALSE), /* pcrel_offset */
309 /* An absolute 16 bit branch, for which bit 10 should be set to
310 indicate that the branch is expected to be taken. The lower two
311 bits must be zero. */
312 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
316 FALSE, /* pc_relative */
318 complain_overflow_signed, /* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_PPC_ADDR14_BRTAKEN",/* name */
321 FALSE, /* partial_inplace */
323 0xfffc, /* dst_mask */
324 FALSE), /* pcrel_offset */
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is not expected to be taken. The lower
328 two bits must be zero. */
329 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE, /* pc_relative */
335 complain_overflow_signed, /* complain_on_overflow */
336 bfd_elf_generic_reloc, /* special_function */
337 "R_PPC_ADDR14_BRNTAKEN",/* name */
338 FALSE, /* partial_inplace */
340 0xfffc, /* dst_mask */
341 FALSE), /* pcrel_offset */
343 /* A relative 26 bit branch; the lower two bits must be zero. */
344 HOWTO (R_PPC_REL24, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 TRUE, /* pc_relative */
350 complain_overflow_signed, /* complain_on_overflow */
351 bfd_elf_generic_reloc, /* special_function */
352 "R_PPC_REL24", /* name */
353 FALSE, /* partial_inplace */
355 0x3fffffc, /* dst_mask */
356 TRUE), /* pcrel_offset */
358 /* A relative 16 bit branch; the lower two bits must be zero. */
359 HOWTO (R_PPC_REL14, /* type */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
363 TRUE, /* pc_relative */
365 complain_overflow_signed, /* complain_on_overflow */
366 bfd_elf_generic_reloc, /* special_function */
367 "R_PPC_REL14", /* name */
368 FALSE, /* partial_inplace */
370 0xfffc, /* dst_mask */
371 TRUE), /* pcrel_offset */
373 /* A relative 16 bit branch. Bit 10 should be set to indicate that
374 the branch is expected to be taken. The lower two bits must be
376 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
380 TRUE, /* pc_relative */
382 complain_overflow_signed, /* complain_on_overflow */
383 bfd_elf_generic_reloc, /* special_function */
384 "R_PPC_REL14_BRTAKEN", /* name */
385 FALSE, /* partial_inplace */
387 0xfffc, /* dst_mask */
388 TRUE), /* pcrel_offset */
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is not expected to be taken. The lower two bits must
393 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 TRUE, /* pc_relative */
399 complain_overflow_signed, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC_REL14_BRNTAKEN",/* name */
402 FALSE, /* partial_inplace */
404 0xfffc, /* dst_mask */
405 TRUE), /* pcrel_offset */
407 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
409 HOWTO (R_PPC_GOT16, /* type */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE, /* pc_relative */
415 complain_overflow_signed, /* complain_on_overflow */
416 ppc_elf_unhandled_reloc, /* special_function */
417 "R_PPC_GOT16", /* name */
418 FALSE, /* partial_inplace */
420 0xffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
423 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
425 HOWTO (R_PPC_GOT16_LO, /* type */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
429 FALSE, /* pc_relative */
431 complain_overflow_dont, /* complain_on_overflow */
432 ppc_elf_unhandled_reloc, /* special_function */
433 "R_PPC_GOT16_LO", /* name */
434 FALSE, /* partial_inplace */
436 0xffff, /* dst_mask */
437 FALSE), /* pcrel_offset */
439 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
441 HOWTO (R_PPC_GOT16_HI, /* type */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
445 FALSE, /* pc_relative */
447 complain_overflow_dont, /* complain_on_overflow */
448 ppc_elf_unhandled_reloc, /* special_function */
449 "R_PPC_GOT16_HI", /* name */
450 FALSE, /* partial_inplace */
452 0xffff, /* dst_mask */
453 FALSE), /* pcrel_offset */
455 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
457 HOWTO (R_PPC_GOT16_HA, /* type */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
461 FALSE, /* pc_relative */
463 complain_overflow_dont, /* complain_on_overflow */
464 ppc_elf_unhandled_reloc, /* special_function */
465 "R_PPC_GOT16_HA", /* name */
466 FALSE, /* partial_inplace */
468 0xffff, /* dst_mask */
469 FALSE), /* pcrel_offset */
471 /* Like R_PPC_REL24, but referring to the procedure linkage table
472 entry for the symbol. */
473 HOWTO (R_PPC_PLTREL24, /* type */
475 2, /* size (0 = byte, 1 = short, 2 = long) */
477 TRUE, /* pc_relative */
479 complain_overflow_signed, /* complain_on_overflow */
480 ppc_elf_unhandled_reloc, /* special_function */
481 "R_PPC_PLTREL24", /* name */
482 FALSE, /* partial_inplace */
484 0x3fffffc, /* dst_mask */
485 TRUE), /* pcrel_offset */
487 /* This is used only by the dynamic linker. The symbol should exist
488 both in the object being run and in some shared library. The
489 dynamic linker copies the data addressed by the symbol from the
490 shared library into the object, because the object being
491 run has to have the data at some particular address. */
492 HOWTO (R_PPC_COPY, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE, /* pc_relative */
498 complain_overflow_dont, /* complain_on_overflow */
499 ppc_elf_unhandled_reloc, /* special_function */
500 "R_PPC_COPY", /* name */
501 FALSE, /* partial_inplace */
504 FALSE), /* pcrel_offset */
506 /* Like R_PPC_ADDR32, but used when setting global offset table
508 HOWTO (R_PPC_GLOB_DAT, /* type */
510 2, /* size (0 = byte, 1 = short, 2 = long) */
512 FALSE, /* pc_relative */
514 complain_overflow_dont, /* complain_on_overflow */
515 ppc_elf_unhandled_reloc, /* special_function */
516 "R_PPC_GLOB_DAT", /* name */
517 FALSE, /* partial_inplace */
519 0xffffffff, /* dst_mask */
520 FALSE), /* pcrel_offset */
522 /* Marks a procedure linkage table entry for a symbol. */
523 HOWTO (R_PPC_JMP_SLOT, /* type */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
527 FALSE, /* pc_relative */
529 complain_overflow_dont, /* complain_on_overflow */
530 ppc_elf_unhandled_reloc, /* special_function */
531 "R_PPC_JMP_SLOT", /* name */
532 FALSE, /* partial_inplace */
535 FALSE), /* pcrel_offset */
537 /* Used only by the dynamic linker. When the object is run, this
538 longword is set to the load address of the object, plus the
540 HOWTO (R_PPC_RELATIVE, /* type */
542 2, /* size (0 = byte, 1 = short, 2 = long) */
544 FALSE, /* pc_relative */
546 complain_overflow_dont, /* complain_on_overflow */
547 bfd_elf_generic_reloc, /* special_function */
548 "R_PPC_RELATIVE", /* name */
549 FALSE, /* partial_inplace */
551 0xffffffff, /* dst_mask */
552 FALSE), /* pcrel_offset */
554 /* Like R_PPC_REL24, but uses the value of the symbol within the
555 object rather than the final value. Normally used for
556 _GLOBAL_OFFSET_TABLE_. */
557 HOWTO (R_PPC_LOCAL24PC, /* type */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
561 TRUE, /* pc_relative */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC_LOCAL24PC", /* name */
566 FALSE, /* partial_inplace */
568 0x3fffffc, /* dst_mask */
569 TRUE), /* pcrel_offset */
571 /* Like R_PPC_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC_UADDR32, /* type */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
576 FALSE, /* pc_relative */
578 complain_overflow_dont, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC_UADDR32", /* name */
581 FALSE, /* partial_inplace */
583 0xffffffff, /* dst_mask */
584 FALSE), /* pcrel_offset */
586 /* Like R_PPC_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC_UADDR16, /* type */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE, /* pc_relative */
593 complain_overflow_bitfield, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC_UADDR16", /* name */
596 FALSE, /* partial_inplace */
598 0xffff, /* dst_mask */
599 FALSE), /* pcrel_offset */
601 /* 32-bit PC relative */
602 HOWTO (R_PPC_REL32, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 TRUE, /* pc_relative */
608 complain_overflow_dont, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_REL32", /* name */
611 FALSE, /* partial_inplace */
613 0xffffffff, /* dst_mask */
614 TRUE), /* pcrel_offset */
616 /* 32-bit relocation to the symbol's procedure linkage table.
617 FIXME: not supported. */
618 HOWTO (R_PPC_PLT32, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 FALSE, /* pc_relative */
624 complain_overflow_dont, /* complain_on_overflow */
625 ppc_elf_unhandled_reloc, /* special_function */
626 "R_PPC_PLT32", /* name */
627 FALSE, /* partial_inplace */
630 FALSE), /* pcrel_offset */
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
633 FIXME: not supported. */
634 HOWTO (R_PPC_PLTREL32, /* type */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
638 TRUE, /* pc_relative */
640 complain_overflow_dont, /* complain_on_overflow */
641 ppc_elf_unhandled_reloc, /* special_function */
642 "R_PPC_PLTREL32", /* name */
643 FALSE, /* partial_inplace */
646 TRUE), /* pcrel_offset */
648 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
650 HOWTO (R_PPC_PLT16_LO, /* type */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
654 FALSE, /* pc_relative */
656 complain_overflow_dont, /* complain_on_overflow */
657 ppc_elf_unhandled_reloc, /* special_function */
658 "R_PPC_PLT16_LO", /* name */
659 FALSE, /* partial_inplace */
661 0xffff, /* dst_mask */
662 FALSE), /* pcrel_offset */
664 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
666 HOWTO (R_PPC_PLT16_HI, /* type */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE, /* pc_relative */
672 complain_overflow_dont, /* complain_on_overflow */
673 ppc_elf_unhandled_reloc, /* special_function */
674 "R_PPC_PLT16_HI", /* name */
675 FALSE, /* partial_inplace */
677 0xffff, /* dst_mask */
678 FALSE), /* pcrel_offset */
680 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
682 HOWTO (R_PPC_PLT16_HA, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE, /* pc_relative */
688 complain_overflow_dont, /* complain_on_overflow */
689 ppc_elf_unhandled_reloc, /* special_function */
690 "R_PPC_PLT16_HA", /* name */
691 FALSE, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
696 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
698 HOWTO (R_PPC_SDAREL16, /* type */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
702 FALSE, /* pc_relative */
704 complain_overflow_signed, /* complain_on_overflow */
705 ppc_elf_unhandled_reloc, /* special_function */
706 "R_PPC_SDAREL16", /* name */
707 FALSE, /* partial_inplace */
709 0xffff, /* dst_mask */
710 FALSE), /* pcrel_offset */
712 /* 16-bit section relative relocation. */
713 HOWTO (R_PPC_SECTOFF, /* type */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
717 FALSE, /* pc_relative */
719 complain_overflow_signed, /* complain_on_overflow */
720 ppc_elf_unhandled_reloc, /* special_function */
721 "R_PPC_SECTOFF", /* name */
722 FALSE, /* partial_inplace */
724 0xffff, /* dst_mask */
725 FALSE), /* pcrel_offset */
727 /* 16-bit lower half section relative relocation. */
728 HOWTO (R_PPC_SECTOFF_LO, /* type */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
732 FALSE, /* pc_relative */
734 complain_overflow_dont, /* complain_on_overflow */
735 ppc_elf_unhandled_reloc, /* special_function */
736 "R_PPC_SECTOFF_LO", /* name */
737 FALSE, /* partial_inplace */
739 0xffff, /* dst_mask */
740 FALSE), /* pcrel_offset */
742 /* 16-bit upper half section relative relocation. */
743 HOWTO (R_PPC_SECTOFF_HI, /* type */
745 1, /* size (0 = byte, 1 = short, 2 = long) */
747 FALSE, /* pc_relative */
749 complain_overflow_dont, /* complain_on_overflow */
750 ppc_elf_unhandled_reloc, /* special_function */
751 "R_PPC_SECTOFF_HI", /* name */
752 FALSE, /* partial_inplace */
754 0xffff, /* dst_mask */
755 FALSE), /* pcrel_offset */
757 /* 16-bit upper half adjusted section relative relocation. */
758 HOWTO (R_PPC_SECTOFF_HA, /* type */
760 1, /* size (0 = byte, 1 = short, 2 = long) */
762 FALSE, /* pc_relative */
764 complain_overflow_dont, /* complain_on_overflow */
765 ppc_elf_unhandled_reloc, /* special_function */
766 "R_PPC_SECTOFF_HA", /* name */
767 FALSE, /* partial_inplace */
769 0xffff, /* dst_mask */
770 FALSE), /* pcrel_offset */
772 /* Marker relocs for TLS. */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
777 FALSE, /* pc_relative */
779 complain_overflow_dont, /* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_PPC_TLS", /* name */
782 FALSE, /* partial_inplace */
785 FALSE), /* pcrel_offset */
789 2, /* size (0 = byte, 1 = short, 2 = long) */
791 FALSE, /* pc_relative */
793 complain_overflow_dont, /* complain_on_overflow */
794 bfd_elf_generic_reloc, /* special_function */
795 "R_PPC_TLSGD", /* name */
796 FALSE, /* partial_inplace */
799 FALSE), /* pcrel_offset */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
805 FALSE, /* pc_relative */
807 complain_overflow_dont, /* complain_on_overflow */
808 bfd_elf_generic_reloc, /* special_function */
809 "R_PPC_TLSLD", /* name */
810 FALSE, /* partial_inplace */
813 FALSE), /* pcrel_offset */
815 /* Computes the load module index of the load module that contains the
816 definition of its TLS sym. */
817 HOWTO (R_PPC_DTPMOD32,
819 2, /* size (0 = byte, 1 = short, 2 = long) */
821 FALSE, /* pc_relative */
823 complain_overflow_dont, /* complain_on_overflow */
824 ppc_elf_unhandled_reloc, /* special_function */
825 "R_PPC_DTPMOD32", /* name */
826 FALSE, /* partial_inplace */
828 0xffffffff, /* dst_mask */
829 FALSE), /* pcrel_offset */
831 /* Computes a dtv-relative displacement, the difference between the value
832 of sym+add and the base address of the thread-local storage block that
833 contains the definition of sym, minus 0x8000. */
834 HOWTO (R_PPC_DTPREL32,
836 2, /* size (0 = byte, 1 = short, 2 = long) */
838 FALSE, /* pc_relative */
840 complain_overflow_dont, /* complain_on_overflow */
841 ppc_elf_unhandled_reloc, /* special_function */
842 "R_PPC_DTPREL32", /* name */
843 FALSE, /* partial_inplace */
845 0xffffffff, /* dst_mask */
846 FALSE), /* pcrel_offset */
848 /* A 16 bit dtprel reloc. */
849 HOWTO (R_PPC_DTPREL16,
851 1, /* size (0 = byte, 1 = short, 2 = long) */
853 FALSE, /* pc_relative */
855 complain_overflow_signed, /* complain_on_overflow */
856 ppc_elf_unhandled_reloc, /* special_function */
857 "R_PPC_DTPREL16", /* name */
858 FALSE, /* partial_inplace */
860 0xffff, /* dst_mask */
861 FALSE), /* pcrel_offset */
863 /* Like DTPREL16, but no overflow. */
864 HOWTO (R_PPC_DTPREL16_LO,
866 1, /* size (0 = byte, 1 = short, 2 = long) */
868 FALSE, /* pc_relative */
870 complain_overflow_dont, /* complain_on_overflow */
871 ppc_elf_unhandled_reloc, /* special_function */
872 "R_PPC_DTPREL16_LO", /* name */
873 FALSE, /* partial_inplace */
875 0xffff, /* dst_mask */
876 FALSE), /* pcrel_offset */
878 /* Like DTPREL16_LO, but next higher group of 16 bits. */
879 HOWTO (R_PPC_DTPREL16_HI,
881 1, /* size (0 = byte, 1 = short, 2 = long) */
883 FALSE, /* pc_relative */
885 complain_overflow_dont, /* complain_on_overflow */
886 ppc_elf_unhandled_reloc, /* special_function */
887 "R_PPC_DTPREL16_HI", /* name */
888 FALSE, /* partial_inplace */
890 0xffff, /* dst_mask */
891 FALSE), /* pcrel_offset */
893 /* Like DTPREL16_HI, but adjust for low 16 bits. */
894 HOWTO (R_PPC_DTPREL16_HA,
896 1, /* size (0 = byte, 1 = short, 2 = long) */
898 FALSE, /* pc_relative */
900 complain_overflow_dont, /* complain_on_overflow */
901 ppc_elf_unhandled_reloc, /* special_function */
902 "R_PPC_DTPREL16_HA", /* name */
903 FALSE, /* partial_inplace */
905 0xffff, /* dst_mask */
906 FALSE), /* pcrel_offset */
908 /* Computes a tp-relative displacement, the difference between the value of
909 sym+add and the value of the thread pointer (r13). */
910 HOWTO (R_PPC_TPREL32,
912 2, /* size (0 = byte, 1 = short, 2 = long) */
914 FALSE, /* pc_relative */
916 complain_overflow_dont, /* complain_on_overflow */
917 ppc_elf_unhandled_reloc, /* special_function */
918 "R_PPC_TPREL32", /* name */
919 FALSE, /* partial_inplace */
921 0xffffffff, /* dst_mask */
922 FALSE), /* pcrel_offset */
924 /* A 16 bit tprel reloc. */
925 HOWTO (R_PPC_TPREL16,
927 1, /* size (0 = byte, 1 = short, 2 = long) */
929 FALSE, /* pc_relative */
931 complain_overflow_signed, /* complain_on_overflow */
932 ppc_elf_unhandled_reloc, /* special_function */
933 "R_PPC_TPREL16", /* name */
934 FALSE, /* partial_inplace */
936 0xffff, /* dst_mask */
937 FALSE), /* pcrel_offset */
939 /* Like TPREL16, but no overflow. */
940 HOWTO (R_PPC_TPREL16_LO,
942 1, /* size (0 = byte, 1 = short, 2 = long) */
944 FALSE, /* pc_relative */
946 complain_overflow_dont, /* complain_on_overflow */
947 ppc_elf_unhandled_reloc, /* special_function */
948 "R_PPC_TPREL16_LO", /* name */
949 FALSE, /* partial_inplace */
951 0xffff, /* dst_mask */
952 FALSE), /* pcrel_offset */
954 /* Like TPREL16_LO, but next higher group of 16 bits. */
955 HOWTO (R_PPC_TPREL16_HI,
957 1, /* size (0 = byte, 1 = short, 2 = long) */
959 FALSE, /* pc_relative */
961 complain_overflow_dont, /* complain_on_overflow */
962 ppc_elf_unhandled_reloc, /* special_function */
963 "R_PPC_TPREL16_HI", /* name */
964 FALSE, /* partial_inplace */
966 0xffff, /* dst_mask */
967 FALSE), /* pcrel_offset */
969 /* Like TPREL16_HI, but adjust for low 16 bits. */
970 HOWTO (R_PPC_TPREL16_HA,
972 1, /* size (0 = byte, 1 = short, 2 = long) */
974 FALSE, /* pc_relative */
976 complain_overflow_dont, /* complain_on_overflow */
977 ppc_elf_unhandled_reloc, /* special_function */
978 "R_PPC_TPREL16_HA", /* name */
979 FALSE, /* partial_inplace */
981 0xffff, /* dst_mask */
982 FALSE), /* pcrel_offset */
984 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
985 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
986 to the first entry. */
987 HOWTO (R_PPC_GOT_TLSGD16,
989 1, /* size (0 = byte, 1 = short, 2 = long) */
991 FALSE, /* pc_relative */
993 complain_overflow_signed, /* complain_on_overflow */
994 ppc_elf_unhandled_reloc, /* special_function */
995 "R_PPC_GOT_TLSGD16", /* name */
996 FALSE, /* partial_inplace */
998 0xffff, /* dst_mask */
999 FALSE), /* pcrel_offset */
1001 /* Like GOT_TLSGD16, but no overflow. */
1002 HOWTO (R_PPC_GOT_TLSGD16_LO,
1004 1, /* size (0 = byte, 1 = short, 2 = long) */
1006 FALSE, /* pc_relative */
1008 complain_overflow_dont, /* complain_on_overflow */
1009 ppc_elf_unhandled_reloc, /* special_function */
1010 "R_PPC_GOT_TLSGD16_LO", /* name */
1011 FALSE, /* partial_inplace */
1013 0xffff, /* dst_mask */
1014 FALSE), /* pcrel_offset */
1016 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1017 HOWTO (R_PPC_GOT_TLSGD16_HI,
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 FALSE, /* pc_relative */
1023 complain_overflow_dont, /* complain_on_overflow */
1024 ppc_elf_unhandled_reloc, /* special_function */
1025 "R_PPC_GOT_TLSGD16_HI", /* name */
1026 FALSE, /* partial_inplace */
1028 0xffff, /* dst_mask */
1029 FALSE), /* pcrel_offset */
1031 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1032 HOWTO (R_PPC_GOT_TLSGD16_HA,
1033 16, /* rightshift */
1034 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 FALSE, /* pc_relative */
1038 complain_overflow_dont, /* complain_on_overflow */
1039 ppc_elf_unhandled_reloc, /* special_function */
1040 "R_PPC_GOT_TLSGD16_HA", /* name */
1041 FALSE, /* partial_inplace */
1043 0xffff, /* dst_mask */
1044 FALSE), /* pcrel_offset */
1046 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1047 with values (sym+add)@dtpmod and zero, and computes the offset to the
1049 HOWTO (R_PPC_GOT_TLSLD16,
1051 1, /* size (0 = byte, 1 = short, 2 = long) */
1053 FALSE, /* pc_relative */
1055 complain_overflow_signed, /* complain_on_overflow */
1056 ppc_elf_unhandled_reloc, /* special_function */
1057 "R_PPC_GOT_TLSLD16", /* name */
1058 FALSE, /* partial_inplace */
1060 0xffff, /* dst_mask */
1061 FALSE), /* pcrel_offset */
1063 /* Like GOT_TLSLD16, but no overflow. */
1064 HOWTO (R_PPC_GOT_TLSLD16_LO,
1066 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 FALSE, /* pc_relative */
1070 complain_overflow_dont, /* complain_on_overflow */
1071 ppc_elf_unhandled_reloc, /* special_function */
1072 "R_PPC_GOT_TLSLD16_LO", /* name */
1073 FALSE, /* partial_inplace */
1075 0xffff, /* dst_mask */
1076 FALSE), /* pcrel_offset */
1078 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1079 HOWTO (R_PPC_GOT_TLSLD16_HI,
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 FALSE, /* pc_relative */
1085 complain_overflow_dont, /* complain_on_overflow */
1086 ppc_elf_unhandled_reloc, /* special_function */
1087 "R_PPC_GOT_TLSLD16_HI", /* name */
1088 FALSE, /* partial_inplace */
1090 0xffff, /* dst_mask */
1091 FALSE), /* pcrel_offset */
1093 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1094 HOWTO (R_PPC_GOT_TLSLD16_HA,
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 FALSE, /* pc_relative */
1100 complain_overflow_dont, /* complain_on_overflow */
1101 ppc_elf_unhandled_reloc, /* special_function */
1102 "R_PPC_GOT_TLSLD16_HA", /* name */
1103 FALSE, /* partial_inplace */
1105 0xffff, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1108 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1109 the offset to the entry. */
1110 HOWTO (R_PPC_GOT_DTPREL16,
1112 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 FALSE, /* pc_relative */
1116 complain_overflow_signed, /* complain_on_overflow */
1117 ppc_elf_unhandled_reloc, /* special_function */
1118 "R_PPC_GOT_DTPREL16", /* name */
1119 FALSE, /* partial_inplace */
1121 0xffff, /* dst_mask */
1122 FALSE), /* pcrel_offset */
1124 /* Like GOT_DTPREL16, but no overflow. */
1125 HOWTO (R_PPC_GOT_DTPREL16_LO,
1127 1, /* size (0 = byte, 1 = short, 2 = long) */
1129 FALSE, /* pc_relative */
1131 complain_overflow_dont, /* complain_on_overflow */
1132 ppc_elf_unhandled_reloc, /* special_function */
1133 "R_PPC_GOT_DTPREL16_LO", /* name */
1134 FALSE, /* partial_inplace */
1136 0xffff, /* dst_mask */
1137 FALSE), /* pcrel_offset */
1139 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1140 HOWTO (R_PPC_GOT_DTPREL16_HI,
1141 16, /* rightshift */
1142 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 FALSE, /* pc_relative */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 ppc_elf_unhandled_reloc, /* special_function */
1148 "R_PPC_GOT_DTPREL16_HI", /* name */
1149 FALSE, /* partial_inplace */
1151 0xffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1154 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1155 HOWTO (R_PPC_GOT_DTPREL16_HA,
1156 16, /* rightshift */
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 FALSE, /* pc_relative */
1161 complain_overflow_dont, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc, /* special_function */
1163 "R_PPC_GOT_DTPREL16_HA", /* name */
1164 FALSE, /* partial_inplace */
1166 0xffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1169 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1170 offset to the entry. */
1171 HOWTO (R_PPC_GOT_TPREL16,
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 FALSE, /* pc_relative */
1177 complain_overflow_signed, /* complain_on_overflow */
1178 ppc_elf_unhandled_reloc, /* special_function */
1179 "R_PPC_GOT_TPREL16", /* name */
1180 FALSE, /* partial_inplace */
1182 0xffff, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1185 /* Like GOT_TPREL16, but no overflow. */
1186 HOWTO (R_PPC_GOT_TPREL16_LO,
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 FALSE, /* pc_relative */
1192 complain_overflow_dont, /* complain_on_overflow */
1193 ppc_elf_unhandled_reloc, /* special_function */
1194 "R_PPC_GOT_TPREL16_LO", /* name */
1195 FALSE, /* partial_inplace */
1197 0xffff, /* dst_mask */
1198 FALSE), /* pcrel_offset */
1200 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1201 HOWTO (R_PPC_GOT_TPREL16_HI,
1202 16, /* rightshift */
1203 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 FALSE, /* pc_relative */
1207 complain_overflow_dont, /* complain_on_overflow */
1208 ppc_elf_unhandled_reloc, /* special_function */
1209 "R_PPC_GOT_TPREL16_HI", /* name */
1210 FALSE, /* partial_inplace */
1212 0xffff, /* dst_mask */
1213 FALSE), /* pcrel_offset */
1215 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1216 HOWTO (R_PPC_GOT_TPREL16_HA,
1217 16, /* rightshift */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 FALSE, /* pc_relative */
1222 complain_overflow_dont, /* complain_on_overflow */
1223 ppc_elf_unhandled_reloc, /* special_function */
1224 "R_PPC_GOT_TPREL16_HA", /* name */
1225 FALSE, /* partial_inplace */
1227 0xffff, /* dst_mask */
1228 FALSE), /* pcrel_offset */
1230 /* The remaining relocs are from the Embedded ELF ABI, and are not
1231 in the SVR4 ELF ABI. */
1233 /* 32 bit value resulting from the addend minus the symbol. */
1234 HOWTO (R_PPC_EMB_NADDR32, /* type */
1236 2, /* size (0 = byte, 1 = short, 2 = long) */
1238 FALSE, /* pc_relative */
1240 complain_overflow_dont, /* complain_on_overflow */
1241 ppc_elf_unhandled_reloc, /* special_function */
1242 "R_PPC_EMB_NADDR32", /* name */
1243 FALSE, /* partial_inplace */
1245 0xffffffff, /* dst_mask */
1246 FALSE), /* pcrel_offset */
1248 /* 16 bit value resulting from the addend minus the symbol. */
1249 HOWTO (R_PPC_EMB_NADDR16, /* type */
1251 1, /* size (0 = byte, 1 = short, 2 = long) */
1253 FALSE, /* pc_relative */
1255 complain_overflow_signed, /* complain_on_overflow */
1256 ppc_elf_unhandled_reloc, /* special_function */
1257 "R_PPC_EMB_NADDR16", /* name */
1258 FALSE, /* partial_inplace */
1260 0xffff, /* dst_mask */
1261 FALSE), /* pcrel_offset */
1263 /* 16 bit value resulting from the addend minus the symbol. */
1264 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 FALSE, /* pc_relative */
1270 complain_overflow_dont,/* complain_on_overflow */
1271 ppc_elf_unhandled_reloc, /* special_function */
1272 "R_PPC_EMB_ADDR16_LO", /* name */
1273 FALSE, /* partial_inplace */
1275 0xffff, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1278 /* The high order 16 bits of the addend minus the symbol. */
1279 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1280 16, /* rightshift */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 ppc_elf_unhandled_reloc, /* special_function */
1287 "R_PPC_EMB_NADDR16_HI", /* name */
1288 FALSE, /* partial_inplace */
1290 0xffff, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1293 /* The high order 16 bits of the result of the addend minus the address,
1294 plus 1 if the contents of the low 16 bits, treated as a signed number,
1296 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1297 16, /* rightshift */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 FALSE, /* pc_relative */
1302 complain_overflow_dont, /* complain_on_overflow */
1303 ppc_elf_unhandled_reloc, /* special_function */
1304 "R_PPC_EMB_NADDR16_HA", /* name */
1305 FALSE, /* partial_inplace */
1307 0xffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1310 /* 16 bit value resulting from allocating a 4 byte word to hold an
1311 address in the .sdata section, and returning the offset from
1312 _SDA_BASE_ for that relocation. */
1313 HOWTO (R_PPC_EMB_SDAI16, /* type */
1315 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 FALSE, /* pc_relative */
1319 complain_overflow_signed, /* complain_on_overflow */
1320 ppc_elf_unhandled_reloc, /* special_function */
1321 "R_PPC_EMB_SDAI16", /* name */
1322 FALSE, /* partial_inplace */
1324 0xffff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1327 /* 16 bit value resulting from allocating a 4 byte word to hold an
1328 address in the .sdata2 section, and returning the offset from
1329 _SDA2_BASE_ for that relocation. */
1330 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 FALSE, /* pc_relative */
1336 complain_overflow_signed, /* complain_on_overflow */
1337 ppc_elf_unhandled_reloc, /* special_function */
1338 "R_PPC_EMB_SDA2I16", /* name */
1339 FALSE, /* partial_inplace */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1344 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1345 small data items. */
1346 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 FALSE, /* pc_relative */
1352 complain_overflow_signed, /* complain_on_overflow */
1353 ppc_elf_unhandled_reloc, /* special_function */
1354 "R_PPC_EMB_SDA2REL", /* name */
1355 FALSE, /* partial_inplace */
1357 0xffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1360 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1361 signed offset from the appropriate base, and filling in the register
1362 field with the appropriate register (0, 2, or 13). */
1363 HOWTO (R_PPC_EMB_SDA21, /* type */
1365 2, /* size (0 = byte, 1 = short, 2 = long) */
1367 FALSE, /* pc_relative */
1369 complain_overflow_signed, /* complain_on_overflow */
1370 ppc_elf_unhandled_reloc, /* special_function */
1371 "R_PPC_EMB_SDA21", /* name */
1372 FALSE, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1377 /* Relocation not handled: R_PPC_EMB_MRKREF */
1378 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1379 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1380 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1382 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1384 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1385 in the 16 bit signed offset from the appropriate base, and filling in the
1386 register field with the appropriate register (0, 2, or 13). */
1387 HOWTO (R_PPC_EMB_RELSDA, /* type */
1389 1, /* size (0 = byte, 1 = short, 2 = long) */
1391 FALSE, /* pc_relative */
1393 complain_overflow_signed, /* complain_on_overflow */
1394 ppc_elf_unhandled_reloc, /* special_function */
1395 "R_PPC_EMB_RELSDA", /* name */
1396 FALSE, /* partial_inplace */
1398 0xffff, /* dst_mask */
1399 FALSE), /* pcrel_offset */
1401 /* A relative 8 bit branch. */
1402 HOWTO (R_PPC_VLE_REL8, /* type */
1404 1, /* size (0 = byte, 1 = short, 2 = long) */
1406 TRUE, /* pc_relative */
1408 complain_overflow_signed, /* complain_on_overflow */
1409 bfd_elf_generic_reloc, /* special_function */
1410 "R_PPC_VLE_REL8", /* name */
1411 FALSE, /* partial_inplace */
1413 0xff, /* dst_mask */
1414 TRUE), /* pcrel_offset */
1416 /* A relative 15 bit branch. */
1417 HOWTO (R_PPC_VLE_REL15, /* type */
1419 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 TRUE, /* pc_relative */
1423 complain_overflow_signed, /* complain_on_overflow */
1424 bfd_elf_generic_reloc, /* special_function */
1425 "R_PPC_VLE_REL15", /* name */
1426 FALSE, /* partial_inplace */
1428 0xfffe, /* dst_mask */
1429 TRUE), /* pcrel_offset */
1431 /* A relative 24 bit branch. */
1432 HOWTO (R_PPC_VLE_REL24, /* type */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 TRUE, /* pc_relative */
1438 complain_overflow_signed, /* complain_on_overflow */
1439 bfd_elf_generic_reloc, /* special_function */
1440 "R_PPC_VLE_REL24", /* name */
1441 FALSE, /* partial_inplace */
1443 0x1fffffe, /* dst_mask */
1444 TRUE), /* pcrel_offset */
1446 /* The 16 LSBS in split16a format. */
1447 HOWTO (R_PPC_VLE_LO16A, /* type */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 FALSE, /* pc_relative */
1453 complain_overflow_dont, /* complain_on_overflow */
1454 ppc_elf_unhandled_reloc, /* special_function */
1455 "R_PPC_VLE_LO16A", /* name */
1456 FALSE, /* partial_inplace */
1458 0x1f007ff, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1461 /* The 16 LSBS in split16d format. */
1462 HOWTO (R_PPC_VLE_LO16D, /* type */
1464 2, /* size (0 = byte, 1 = short, 2 = long) */
1466 FALSE, /* pc_relative */
1468 complain_overflow_dont, /* complain_on_overflow */
1469 ppc_elf_unhandled_reloc, /* special_function */
1470 "R_PPC_VLE_LO16D", /* name */
1471 FALSE, /* partial_inplace */
1473 0x1f07ff, /* dst_mask */
1474 FALSE), /* pcrel_offset */
1476 /* Bits 16-31 split16a format. */
1477 HOWTO (R_PPC_VLE_HI16A, /* type */
1478 16, /* rightshift */
1479 2, /* size (0 = byte, 1 = short, 2 = long) */
1481 FALSE, /* pc_relative */
1483 complain_overflow_dont, /* complain_on_overflow */
1484 ppc_elf_unhandled_reloc, /* special_function */
1485 "R_PPC_VLE_HI16A", /* name */
1486 FALSE, /* partial_inplace */
1488 0x1f007ff, /* dst_mask */
1489 FALSE), /* pcrel_offset */
1491 /* Bits 16-31 split16d format. */
1492 HOWTO (R_PPC_VLE_HI16D, /* type */
1493 16, /* rightshift */
1494 2, /* size (0 = byte, 1 = short, 2 = long) */
1496 FALSE, /* pc_relative */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc_elf_unhandled_reloc, /* special_function */
1500 "R_PPC_VLE_HI16D", /* name */
1501 FALSE, /* partial_inplace */
1503 0x1f07ff, /* dst_mask */
1504 FALSE), /* pcrel_offset */
1506 /* Bits 16-31 (High Adjusted) in split16a format. */
1507 HOWTO (R_PPC_VLE_HA16A, /* type */
1508 16, /* rightshift */
1509 2, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE, /* pc_relative */
1513 complain_overflow_dont, /* complain_on_overflow */
1514 ppc_elf_unhandled_reloc, /* special_function */
1515 "R_PPC_VLE_HA16A", /* name */
1516 FALSE, /* partial_inplace */
1518 0x1f007ff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1521 /* Bits 16-31 (High Adjusted) in split16d format. */
1522 HOWTO (R_PPC_VLE_HA16D, /* type */
1523 16, /* rightshift */
1524 2, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE, /* pc_relative */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc_elf_unhandled_reloc, /* special_function */
1530 "R_PPC_VLE_HA16D", /* name */
1531 FALSE, /* partial_inplace */
1533 0x1f07ff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1536 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1537 instructions. If the register base is 0 then the linker changes
1538 the e_add16i to an e_li instruction. */
1539 HOWTO (R_PPC_VLE_SDA21, /* type */
1541 2, /* size (0 = byte, 1 = short, 2 = long) */
1543 FALSE, /* pc_relative */
1545 complain_overflow_signed, /* complain_on_overflow */
1546 ppc_elf_unhandled_reloc, /* special_function */
1547 "R_PPC_VLE_SDA21", /* name */
1548 FALSE, /* partial_inplace */
1550 0xffff, /* dst_mask */
1551 FALSE), /* pcrel_offset */
1553 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1554 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1556 2, /* size (0 = byte, 1 = short, 2 = long) */
1558 FALSE, /* pc_relative */
1560 complain_overflow_dont, /* complain_on_overflow */
1561 ppc_elf_unhandled_reloc, /* special_function */
1562 "R_PPC_VLE_SDA21_LO", /* name */
1563 FALSE, /* partial_inplace */
1565 0xffff, /* dst_mask */
1566 FALSE), /* pcrel_offset */
1568 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1569 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1571 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 FALSE, /* pc_relative */
1575 complain_overflow_dont, /* complain_on_overflow */
1576 ppc_elf_unhandled_reloc, /* special_function */
1577 "R_PPC_VLE_SDAREL_LO16A", /* name */
1578 FALSE, /* partial_inplace */
1580 0x1f007ff, /* dst_mask */
1581 FALSE), /* pcrel_offset */
1583 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1584 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 FALSE, /* pc_relative */
1590 complain_overflow_dont, /* complain_on_overflow */
1591 ppc_elf_unhandled_reloc, /* special_function */
1592 "R_PPC_VLE_SDAREL_LO16D", /* name */
1593 FALSE, /* partial_inplace */
1595 0x1f07ff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1598 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1599 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1600 16, /* rightshift */
1601 2, /* size (0 = byte, 1 = short, 2 = long) */
1603 FALSE, /* pc_relative */
1605 complain_overflow_dont, /* complain_on_overflow */
1606 ppc_elf_unhandled_reloc, /* special_function */
1607 "R_PPC_VLE_SDAREL_HI16A", /* name */
1608 FALSE, /* partial_inplace */
1610 0x1f007ff, /* dst_mask */
1611 FALSE), /* pcrel_offset */
1613 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1614 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1615 16, /* rightshift */
1616 2, /* size (0 = byte, 1 = short, 2 = long) */
1618 FALSE, /* pc_relative */
1620 complain_overflow_dont, /* complain_on_overflow */
1621 ppc_elf_unhandled_reloc, /* special_function */
1622 "R_PPC_VLE_SDAREL_HI16D", /* name */
1623 FALSE, /* partial_inplace */
1625 0x1f07ff, /* dst_mask */
1626 FALSE), /* pcrel_offset */
1628 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1629 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1630 16, /* rightshift */
1631 2, /* size (0 = byte, 1 = short, 2 = long) */
1633 FALSE, /* pc_relative */
1635 complain_overflow_dont, /* complain_on_overflow */
1636 ppc_elf_unhandled_reloc, /* special_function */
1637 "R_PPC_VLE_SDAREL_HA16A", /* name */
1638 FALSE, /* partial_inplace */
1640 0x1f007ff, /* dst_mask */
1641 FALSE), /* pcrel_offset */
1643 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1644 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1645 16, /* rightshift */
1646 2, /* size (0 = byte, 1 = short, 2 = long) */
1648 FALSE, /* pc_relative */
1650 complain_overflow_dont, /* complain_on_overflow */
1651 ppc_elf_unhandled_reloc, /* special_function */
1652 "R_PPC_VLE_SDAREL_HA16D", /* name */
1653 FALSE, /* partial_inplace */
1655 0x1f07ff, /* dst_mask */
1656 FALSE), /* pcrel_offset */
1658 HOWTO (R_PPC_IRELATIVE, /* type */
1660 2, /* size (0 = byte, 1 = short, 2 = long) */
1662 FALSE, /* pc_relative */
1664 complain_overflow_dont, /* complain_on_overflow */
1665 ppc_elf_unhandled_reloc, /* special_function */
1666 "R_PPC_IRELATIVE", /* name */
1667 FALSE, /* partial_inplace */
1669 0xffffffff, /* dst_mask */
1670 FALSE), /* pcrel_offset */
1672 /* A 16 bit relative relocation. */
1673 HOWTO (R_PPC_REL16, /* type */
1675 1, /* size (0 = byte, 1 = short, 2 = long) */
1677 TRUE, /* pc_relative */
1679 complain_overflow_signed, /* complain_on_overflow */
1680 bfd_elf_generic_reloc, /* special_function */
1681 "R_PPC_REL16", /* name */
1682 FALSE, /* partial_inplace */
1684 0xffff, /* dst_mask */
1685 TRUE), /* pcrel_offset */
1687 /* A 16 bit relative relocation without overflow. */
1688 HOWTO (R_PPC_REL16_LO, /* type */
1690 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 TRUE, /* pc_relative */
1694 complain_overflow_dont,/* complain_on_overflow */
1695 bfd_elf_generic_reloc, /* special_function */
1696 "R_PPC_REL16_LO", /* name */
1697 FALSE, /* partial_inplace */
1699 0xffff, /* dst_mask */
1700 TRUE), /* pcrel_offset */
1702 /* The high order 16 bits of a relative address. */
1703 HOWTO (R_PPC_REL16_HI, /* type */
1704 16, /* rightshift */
1705 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 TRUE, /* pc_relative */
1709 complain_overflow_dont, /* complain_on_overflow */
1710 bfd_elf_generic_reloc, /* special_function */
1711 "R_PPC_REL16_HI", /* name */
1712 FALSE, /* partial_inplace */
1714 0xffff, /* dst_mask */
1715 TRUE), /* pcrel_offset */
1717 /* The high order 16 bits of a relative address, plus 1 if the contents of
1718 the low 16 bits, treated as a signed number, is negative. */
1719 HOWTO (R_PPC_REL16_HA, /* type */
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 TRUE, /* pc_relative */
1725 complain_overflow_dont, /* complain_on_overflow */
1726 ppc_elf_addr16_ha_reloc, /* special_function */
1727 "R_PPC_REL16_HA", /* name */
1728 FALSE, /* partial_inplace */
1730 0xffff, /* dst_mask */
1731 TRUE), /* pcrel_offset */
1733 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1734 HOWTO (R_PPC_REL16DX_HA, /* type */
1735 16, /* rightshift */
1736 2, /* size (0 = byte, 1 = short, 2 = long) */
1738 TRUE, /* pc_relative */
1740 complain_overflow_signed, /* complain_on_overflow */
1741 ppc_elf_addr16_ha_reloc, /* special_function */
1742 "R_PPC_REL16DX_HA", /* name */
1743 FALSE, /* partial_inplace */
1745 0x1fffc1, /* dst_mask */
1746 TRUE), /* pcrel_offset */
1748 /* GNU extension to record C++ vtable hierarchy. */
1749 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1751 0, /* size (0 = byte, 1 = short, 2 = long) */
1753 FALSE, /* pc_relative */
1755 complain_overflow_dont, /* complain_on_overflow */
1756 NULL, /* special_function */
1757 "R_PPC_GNU_VTINHERIT", /* name */
1758 FALSE, /* partial_inplace */
1761 FALSE), /* pcrel_offset */
1763 /* GNU extension to record C++ vtable member usage. */
1764 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1766 0, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE, /* pc_relative */
1770 complain_overflow_dont, /* complain_on_overflow */
1771 NULL, /* special_function */
1772 "R_PPC_GNU_VTENTRY", /* name */
1773 FALSE, /* partial_inplace */
1776 FALSE), /* pcrel_offset */
1778 /* Phony reloc to handle AIX style TOC entries. */
1779 HOWTO (R_PPC_TOC16, /* type */
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE, /* pc_relative */
1785 complain_overflow_signed, /* complain_on_overflow */
1786 ppc_elf_unhandled_reloc, /* special_function */
1787 "R_PPC_TOC16", /* name */
1788 FALSE, /* partial_inplace */
1790 0xffff, /* dst_mask */
1791 FALSE), /* pcrel_offset */
1794 /* External 32-bit PPC structure for PRPSINFO. This structure is
1795 ABI-defined, thus we choose to use char arrays here in order to
1796 avoid dealing with different types in different architectures.
1798 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1799 most non-PPC architectures use `short int'.
1801 This structure will ultimately be written in the corefile's note
1802 section, as the PRPSINFO. */
1804 struct elf_external_ppc_linux_prpsinfo32
1806 char pr_state; /* Numeric process state. */
1807 char pr_sname; /* Char for pr_state. */
1808 char pr_zomb; /* Zombie. */
1809 char pr_nice; /* Nice val. */
1810 char pr_flag[4]; /* Flags. */
1817 char pr_fname[16]; /* Filename of executable. */
1818 char pr_psargs[80]; /* Initial part of arg list. */
1821 /* Helper function to copy an elf_internal_linux_prpsinfo in host
1822 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1825 swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1826 const struct elf_internal_linux_prpsinfo *from,
1827 struct elf_external_ppc_linux_prpsinfo32 *to)
1829 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1830 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1831 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1832 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1833 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1834 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1835 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1836 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1837 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1838 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1839 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1840 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1841 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1844 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1847 ppc_elf_howto_init (void)
1849 unsigned int i, type;
1852 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1855 type = ppc_elf_howto_raw[i].type;
1856 if (type >= (sizeof (ppc_elf_howto_table)
1857 / sizeof (ppc_elf_howto_table[0])))
1859 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1863 static reloc_howto_type *
1864 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1865 bfd_reloc_code_real_type code)
1867 enum elf_ppc_reloc_type r;
1869 /* Initialize howto table if not already done. */
1870 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1871 ppc_elf_howto_init ();
1878 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1879 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1880 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1881 case BFD_RELOC_PPC64_ADDR16_DS:
1882 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1883 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1884 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1885 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1886 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1887 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1888 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1889 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1890 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1891 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1892 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1893 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1894 case BFD_RELOC_PPC64_GOT16_DS:
1895 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1896 case BFD_RELOC_PPC64_GOT16_LO_DS:
1897 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1898 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1899 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1900 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1901 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1902 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1903 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1904 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1905 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1906 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1907 case BFD_RELOC_PPC64_PLT16_LO_DS:
1908 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1909 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1910 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1911 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1912 case BFD_RELOC_PPC64_SECTOFF_DS:
1913 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1914 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1915 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1916 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1917 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1918 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1919 case BFD_RELOC_PPC64_TOC16_DS:
1920 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1921 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1922 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1923 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1924 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1925 case BFD_RELOC_PPC64_TPREL16_DS:
1926 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1927 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1928 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1929 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1930 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1931 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1932 case BFD_RELOC_PPC64_DTPREL16_DS:
1933 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1934 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1935 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1936 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1937 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1938 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1939 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1940 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1941 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1942 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1943 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1944 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1945 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1946 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1947 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1948 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1949 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1950 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1951 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1952 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1953 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1954 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1955 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1956 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1957 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1958 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1959 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1960 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1961 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1962 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1963 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1964 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1965 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1966 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1967 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1968 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1969 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1970 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1971 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1972 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1973 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1974 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1975 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1976 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1977 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1978 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1979 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1980 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1981 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1982 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1983 r = R_PPC_VLE_SDAREL_LO16A;
1985 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1986 r = R_PPC_VLE_SDAREL_LO16D;
1988 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1989 r = R_PPC_VLE_SDAREL_HI16A;
1991 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1992 r = R_PPC_VLE_SDAREL_HI16D;
1994 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1995 r = R_PPC_VLE_SDAREL_HA16A;
1997 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1998 r = R_PPC_VLE_SDAREL_HA16D;
2000 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2001 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2002 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2003 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2004 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2005 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2006 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2009 return ppc_elf_howto_table[r];
2012 static reloc_howto_type *
2013 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2019 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2021 if (ppc_elf_howto_raw[i].name != NULL
2022 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2023 return &ppc_elf_howto_raw[i];
2028 /* Set the howto pointer for a PowerPC ELF reloc. */
2031 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2033 Elf_Internal_Rela *dst)
2035 unsigned int r_type;
2037 /* Initialize howto table if not already done. */
2038 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2039 ppc_elf_howto_init ();
2041 r_type = ELF32_R_TYPE (dst->r_info);
2042 if (r_type >= R_PPC_max)
2044 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2046 bfd_set_error (bfd_error_bad_value);
2047 r_type = R_PPC_NONE;
2049 cache_ptr->howto = ppc_elf_howto_table[r_type];
2051 /* Just because the above assert didn't trigger doesn't mean that
2052 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2053 if (!cache_ptr->howto)
2055 _bfd_error_handler (_("%B: invalid relocation type %d"),
2057 bfd_set_error (bfd_error_bad_value);
2059 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2063 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2065 static bfd_reloc_status_type
2066 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2067 arelent *reloc_entry,
2069 void *data ATTRIBUTE_UNUSED,
2070 asection *input_section,
2072 char **error_message ATTRIBUTE_UNUSED)
2074 enum elf_ppc_reloc_type r_type;
2076 bfd_size_type octets;
2079 if (output_bfd != NULL)
2081 reloc_entry->address += input_section->output_offset;
2082 return bfd_reloc_ok;
2085 reloc_entry->addend += 0x8000;
2086 r_type = reloc_entry->howto->type;
2087 if (r_type != R_PPC_REL16DX_HA)
2088 return bfd_reloc_continue;
2091 if (!bfd_is_com_section (symbol->section))
2092 value = symbol->value;
2093 value += (reloc_entry->addend
2094 + symbol->section->output_offset
2095 + symbol->section->output_section->vma);
2096 value -= (reloc_entry->address
2097 + input_section->output_offset
2098 + input_section->output_section->vma);
2101 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2102 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2104 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2105 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2106 return bfd_reloc_ok;
2109 static bfd_reloc_status_type
2110 ppc_elf_unhandled_reloc (bfd *abfd,
2111 arelent *reloc_entry,
2114 asection *input_section,
2116 char **error_message)
2118 /* If this is a relocatable link (output_bfd test tells us), just
2119 call the generic function. Any adjustment will be done at final
2121 if (output_bfd != NULL)
2122 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2123 input_section, output_bfd, error_message);
2125 if (error_message != NULL)
2127 static char buf[60];
2128 sprintf (buf, _("generic linker can't handle %s"),
2129 reloc_entry->howto->name);
2130 *error_message = buf;
2132 return bfd_reloc_dangerous;
2135 /* Sections created by the linker. */
2137 typedef struct elf_linker_section
2139 /* Pointer to the bfd section. */
2143 /* Associated bss section name. */
2144 const char *bss_name;
2145 /* Associated symbol name. */
2146 const char *sym_name;
2147 /* Associated symbol. */
2148 struct elf_link_hash_entry *sym;
2149 } elf_linker_section_t;
2151 /* Linked list of allocated pointer entries. This hangs off of the
2152 symbol lists, and provides allows us to return different pointers,
2153 based on different addend's. */
2155 typedef struct elf_linker_section_pointers
2157 /* next allocated pointer for this symbol */
2158 struct elf_linker_section_pointers *next;
2159 /* offset of pointer from beginning of section */
2163 /* which linker section this is */
2164 elf_linker_section_t *lsect;
2165 } elf_linker_section_pointers_t;
2167 struct ppc_elf_obj_tdata
2169 struct elf_obj_tdata elf;
2171 /* A mapping from local symbols to offsets into the various linker
2172 sections added. This is index by the symbol index. */
2173 elf_linker_section_pointers_t **linker_section_pointers;
2175 /* Flags used to auto-detect plt type. */
2176 unsigned int makes_plt_call : 1;
2177 unsigned int has_rel16 : 1;
2180 #define ppc_elf_tdata(bfd) \
2181 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2183 #define elf_local_ptr_offsets(bfd) \
2184 (ppc_elf_tdata (bfd)->linker_section_pointers)
2186 #define is_ppc_elf(bfd) \
2187 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2188 && elf_object_id (bfd) == PPC32_ELF_DATA)
2190 /* Override the generic function because we store some extras. */
2193 ppc_elf_mkobject (bfd *abfd)
2195 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2199 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2202 _bfd_elf_ppc_set_arch (bfd *abfd)
2204 unsigned long mach = 0;
2206 unsigned char *contents;
2208 if (abfd->arch_info->bits_per_word == 32
2209 && bfd_big_endian (abfd))
2212 for (s = abfd->sections; s != NULL; s = s->next)
2213 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2216 mach = bfd_mach_ppc_vle;
2221 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2222 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2224 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2227 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2229 unsigned int val = bfd_get_32 (abfd, contents + i);
2232 case PPC_APUINFO_PMR:
2233 case PPC_APUINFO_RFMCI:
2235 mach = bfd_mach_ppc_titan;
2238 case PPC_APUINFO_ISEL:
2239 case PPC_APUINFO_CACHELCK:
2240 if (mach == bfd_mach_ppc_titan)
2241 mach = bfd_mach_ppc_e500mc;
2244 case PPC_APUINFO_SPE:
2245 case PPC_APUINFO_EFS:
2246 case PPC_APUINFO_BRLOCK:
2247 if (mach != bfd_mach_ppc_vle)
2248 mach = bfd_mach_ppc_e500;
2251 case PPC_APUINFO_VLE:
2252 mach = bfd_mach_ppc_vle;
2263 if (mach != 0 && mach != -1ul)
2265 const bfd_arch_info_type *arch;
2267 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2268 if (arch->mach == mach)
2270 abfd->arch_info = arch;
2277 /* Fix bad default arch selected for a 32 bit input bfd when the
2278 default is 64 bit. Also select arch based on apuinfo. */
2281 ppc_elf_object_p (bfd *abfd)
2283 if (!abfd->arch_info->the_default)
2286 if (abfd->arch_info->bits_per_word == 64)
2288 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2290 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2292 /* Relies on arch after 64 bit default being 32 bit default. */
2293 abfd->arch_info = abfd->arch_info->next;
2294 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2297 return _bfd_elf_ppc_set_arch (abfd);
2300 /* Function to set whether a module needs the -mrelocatable bit set. */
2303 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2305 BFD_ASSERT (!elf_flags_init (abfd)
2306 || elf_elfheader (abfd)->e_flags == flags);
2308 elf_elfheader (abfd)->e_flags = flags;
2309 elf_flags_init (abfd) = TRUE;
2313 /* Support for core dump NOTE sections. */
2316 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2321 switch (note->descsz)
2326 case 268: /* Linux/PPC. */
2328 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2331 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2340 /* Make a ".reg/999" section. */
2341 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2342 size, note->descpos + offset);
2346 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2348 switch (note->descsz)
2353 case 128: /* Linux/PPC elf_prpsinfo. */
2354 elf_tdata (abfd)->core->pid
2355 = bfd_get_32 (abfd, note->descdata + 16);
2356 elf_tdata (abfd)->core->program
2357 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2358 elf_tdata (abfd)->core->command
2359 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2362 /* Note that for some reason, a spurious space is tacked
2363 onto the end of the args in some (at least one anyway)
2364 implementations, so strip it off if it exists. */
2367 char *command = elf_tdata (abfd)->core->command;
2368 int n = strlen (command);
2370 if (0 < n && command[n - 1] == ' ')
2371 command[n - 1] = '\0';
2378 elfcore_write_ppc_linux_prpsinfo32
2382 const struct elf_internal_linux_prpsinfo *prpsinfo)
2384 struct elf_external_ppc_linux_prpsinfo32 data;
2386 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2387 return elfcore_write_note (abfd, buf, bufsiz,
2388 "CORE", NT_PRPSINFO, &data, sizeof (data));
2392 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2404 va_start (ap, note_type);
2405 memset (data, 0, sizeof (data));
2406 strncpy (data + 32, va_arg (ap, const char *), 16);
2407 strncpy (data + 48, va_arg (ap, const char *), 80);
2409 return elfcore_write_note (abfd, buf, bufsiz,
2410 "CORE", note_type, data, sizeof (data));
2421 va_start (ap, note_type);
2422 memset (data, 0, 72);
2423 pid = va_arg (ap, long);
2424 bfd_put_32 (abfd, pid, data + 24);
2425 cursig = va_arg (ap, int);
2426 bfd_put_16 (abfd, cursig, data + 12);
2427 greg = va_arg (ap, const void *);
2428 memcpy (data + 72, greg, 192);
2429 memset (data + 264, 0, 4);
2431 return elfcore_write_note (abfd, buf, bufsiz,
2432 "CORE", note_type, data, sizeof (data));
2438 ppc_elf_lookup_section_flags (char *flag_name)
2441 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2447 /* Return address for Ith PLT stub in section PLT, for relocation REL
2448 or (bfd_vma) -1 if it should not be included. */
2451 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2452 const asection *plt ATTRIBUTE_UNUSED,
2455 return rel->address;
2458 /* Handle a PowerPC specific section when reading an object file. This
2459 is called when bfd_section_from_shdr finds a section with an unknown
2463 ppc_elf_section_from_shdr (bfd *abfd,
2464 Elf_Internal_Shdr *hdr,
2471 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2474 newsect = hdr->bfd_section;
2475 flags = bfd_get_section_flags (abfd, newsect);
2476 if (hdr->sh_flags & SHF_EXCLUDE)
2477 flags |= SEC_EXCLUDE;
2479 if (hdr->sh_type == SHT_ORDERED)
2480 flags |= SEC_SORT_ENTRIES;
2482 bfd_set_section_flags (abfd, newsect, flags);
2486 /* Set up any other section flags and such that may be necessary. */
2489 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2490 Elf_Internal_Shdr *shdr,
2493 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2494 shdr->sh_type = SHT_ORDERED;
2499 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2500 need to bump up the number of section headers. */
2503 ppc_elf_additional_program_headers (bfd *abfd,
2504 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2509 s = bfd_get_section_by_name (abfd, ".sbss2");
2510 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2513 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2514 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2520 /* Modify the segment map for VLE executables. */
2523 ppc_elf_modify_segment_map (bfd *abfd,
2524 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2526 struct elf_segment_map *m;
2528 /* At this point in the link, output sections have already been sorted by
2529 LMA and assigned to segments. All that is left to do is to ensure
2530 there is no mixing of VLE & non-VLE sections in a text segment.
2531 If we find that case, we split the segment.
2532 We maintain the original output section order. */
2534 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2536 struct elf_segment_map *n;
2539 unsigned int p_flags;
2541 if (m->p_type != PT_LOAD || m->count == 0)
2544 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2546 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2548 if ((m->sections[j]->flags & SEC_CODE) != 0)
2551 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2552 p_flags |= PF_PPC_VLE;
2557 while (++j != m->count)
2559 unsigned int p_flags1 = PF_R;
2561 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2563 if ((m->sections[j]->flags & SEC_CODE) != 0)
2566 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2567 p_flags1 |= PF_PPC_VLE;
2568 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2571 p_flags |= p_flags1;
2573 /* If we're splitting a segment which originally contained rw
2574 sections then those sections might now only be in one of the
2575 two parts. So always set p_flags if splitting, even if we
2576 are being called for objcopy with p_flags_valid set. */
2577 if (j != m->count || !m->p_flags_valid)
2579 m->p_flags_valid = 1;
2580 m->p_flags = p_flags;
2585 /* Sections 0..j-1 stay in this (current) segment,
2586 the remainder are put in a new segment.
2587 The scan resumes with the new segment. */
2589 amt = sizeof (struct elf_segment_map);
2590 amt += (m->count - j - 1) * sizeof (asection *);
2591 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2595 n->p_type = PT_LOAD;
2596 n->count = m->count - j;
2597 for (k = 0; k < n->count; ++k)
2598 n->sections[k] = m->sections[j + k];
2600 m->p_size_valid = 0;
2608 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2609 .PPC.EMB.sbss0 a normal section, and not a bss section so
2610 that the linker doesn't crater when trying to make more than
2613 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2615 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2616 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2617 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2618 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2619 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2620 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2621 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2622 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2623 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2624 { NULL, 0, 0, 0, 0 }
2627 /* This is what we want for new plt/got. */
2628 static struct bfd_elf_special_section ppc_alt_plt =
2629 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2631 static const struct bfd_elf_special_section *
2632 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2634 const struct bfd_elf_special_section *ssect;
2636 /* See if this is one of the special sections. */
2637 if (sec->name == NULL)
2640 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2644 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2645 ssect = &ppc_alt_plt;
2649 return _bfd_elf_get_sec_type_attr (abfd, sec);
2652 /* Very simple linked list structure for recording apuinfo values. */
2653 typedef struct apuinfo_list
2655 struct apuinfo_list *next;
2656 unsigned long value;
2660 static apuinfo_list *head;
2661 static bfd_boolean apuinfo_set;
2664 apuinfo_list_init (void)
2667 apuinfo_set = FALSE;
2671 apuinfo_list_add (unsigned long value)
2673 apuinfo_list *entry = head;
2675 while (entry != NULL)
2677 if (entry->value == value)
2679 entry = entry->next;
2682 entry = bfd_malloc (sizeof (* entry));
2686 entry->value = value;
2692 apuinfo_list_length (void)
2694 apuinfo_list *entry;
2695 unsigned long count;
2697 for (entry = head, count = 0;
2699 entry = entry->next)
2705 static inline unsigned long
2706 apuinfo_list_element (unsigned long number)
2708 apuinfo_list * entry;
2712 entry = entry->next)
2715 return entry ? entry->value : 0;
2719 apuinfo_list_finish (void)
2721 apuinfo_list *entry;
2723 for (entry = head; entry;)
2725 apuinfo_list *next = entry->next;
2733 /* Scan the input BFDs and create a linked list of
2734 the APUinfo values that will need to be emitted. */
2737 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2741 char *buffer = NULL;
2742 bfd_size_type largest_input_size = 0;
2744 unsigned long length;
2745 const char *error_message = NULL;
2747 if (link_info == NULL)
2750 apuinfo_list_init ();
2752 /* Read in the input sections contents. */
2753 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2755 unsigned long datum;
2757 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2761 error_message = _("corrupt %s section in %B");
2762 length = asec->size;
2767 if (largest_input_size < asec->size)
2771 largest_input_size = asec->size;
2772 buffer = bfd_malloc (largest_input_size);
2777 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2778 || (bfd_bread (buffer, length, ibfd) != length))
2780 error_message = _("unable to read in %s section from %B");
2784 /* Verify the contents of the header. Note - we have to
2785 extract the values this way in order to allow for a
2786 host whose endian-ness is different from the target. */
2787 datum = bfd_get_32 (ibfd, buffer);
2788 if (datum != sizeof APUINFO_LABEL)
2791 datum = bfd_get_32 (ibfd, buffer + 8);
2795 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2798 /* Get the number of bytes used for apuinfo entries. */
2799 datum = bfd_get_32 (ibfd, buffer + 4);
2800 if (datum + 20 != length)
2803 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2804 for (i = 0; i < datum; i += 4)
2805 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2808 error_message = NULL;
2812 /* Compute the size of the output section. */
2813 unsigned num_entries = apuinfo_list_length ();
2815 /* Set the output section size, if it exists. */
2816 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2818 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2821 error_message = _("warning: unable to set size of %s section in %B");
2830 _bfd_error_handler (error_message, ibfd, APUINFO_SECTION_NAME);
2833 /* Prevent the output section from accumulating the input sections'
2834 contents. We have already stored this in our linked list structure. */
2837 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2838 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2840 bfd_byte *contents ATTRIBUTE_UNUSED)
2842 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2845 /* Finally we can generate the output section. */
2848 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2853 unsigned num_entries;
2854 bfd_size_type length;
2856 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2863 length = asec->size;
2867 buffer = bfd_malloc (length);
2871 (_("failed to allocate space for new APUinfo section."));
2875 /* Create the apuinfo header. */
2876 num_entries = apuinfo_list_length ();
2877 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2878 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2879 bfd_put_32 (abfd, 0x2, buffer + 8);
2880 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2883 for (i = 0; i < num_entries; i++)
2885 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2889 if (length != asec->size)
2890 _bfd_error_handler (_("failed to compute new APUinfo section."));
2892 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2893 _bfd_error_handler (_("failed to install new APUinfo section."));
2897 apuinfo_list_finish ();
2901 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2903 bfd_byte buf[GLINK_ENTRY_SIZE];
2905 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2908 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2909 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2910 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2911 && bfd_get_32 (abfd, buf + 12) == BCTR);
2915 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2917 bfd_vma vma = *(bfd_vma *) ptr;
2918 return ((section->flags & SEC_ALLOC) != 0
2919 && section->vma <= vma
2920 && vma < section->vma + section->size);
2924 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2925 long dynsymcount, asymbol **dynsyms,
2928 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2929 asection *plt, *relplt, *dynamic, *glink;
2930 bfd_vma glink_vma = 0;
2931 bfd_vma resolv_vma = 0;
2942 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2945 if (dynsymcount <= 0)
2948 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2952 plt = bfd_get_section_by_name (abfd, ".plt");
2956 /* Call common code to handle old-style executable PLTs. */
2957 if (elf_section_flags (plt) & SHF_EXECINSTR)
2958 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2959 dynsymcount, dynsyms, ret);
2961 /* If this object was prelinked, the prelinker stored the address
2962 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2963 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2964 if (dynamic != NULL)
2966 bfd_byte *dynbuf, *extdyn, *extdynend;
2968 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2970 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2973 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2974 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2977 extdynend = extdyn + dynamic->size;
2978 for (; extdyn < extdynend; extdyn += extdynsize)
2980 Elf_Internal_Dyn dyn;
2981 (*swap_dyn_in) (abfd, extdyn, &dyn);
2983 if (dyn.d_tag == DT_NULL)
2986 if (dyn.d_tag == DT_PPC_GOT)
2988 unsigned int g_o_t = dyn.d_un.d_val;
2989 asection *got = bfd_get_section_by_name (abfd, ".got");
2991 && bfd_get_section_contents (abfd, got, buf,
2992 g_o_t - got->vma + 4, 4))
2993 glink_vma = bfd_get_32 (abfd, buf);
3000 /* Otherwise we read the first plt entry. */
3003 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3004 glink_vma = bfd_get_32 (abfd, buf);
3010 /* The .glink section usually does not survive the final
3011 link; search for the section (usually .text) where the
3012 glink stubs now reside. */
3013 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3017 /* Determine glink PLT resolver by reading the relative branch
3018 from the first glink stub. */
3019 if (bfd_get_section_contents (abfd, glink, buf,
3020 glink_vma - glink->vma, 4))
3022 unsigned int insn = bfd_get_32 (abfd, buf);
3024 /* The first glink stub may either branch to the resolver ... */
3026 if ((insn & ~0x3fffffc) == 0)
3027 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3029 /* ... or fall through a bunch of NOPs. */
3030 else if ((insn ^ B ^ NOP) == 0)
3032 bfd_get_section_contents (abfd, glink, buf,
3033 glink_vma - glink->vma + i, 4);
3035 if (bfd_get_32 (abfd, buf) != NOP)
3037 resolv_vma = glink_vma + i;
3042 count = relplt->size / sizeof (Elf32_External_Rela);
3043 /* If the stubs are those for -shared/-pie then we might have
3044 multiple stubs for each plt entry. If that is the case then
3045 there is no way to associate stubs with their plt entries short
3046 of figuring out the GOT pointer value used in the stub. */
3047 if (!is_nonpic_glink_stub (abfd, glink,
3048 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3051 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3052 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3055 size = count * sizeof (asymbol);
3056 p = relplt->relocation;
3057 for (i = 0; i < count; i++, p++)
3059 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3061 size += sizeof ("+0x") - 1 + 8;
3064 size += sizeof (asymbol) + sizeof ("__glink");
3067 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3069 s = *ret = bfd_malloc (size);
3073 stub_vma = glink_vma;
3074 names = (char *) (s + count + 1 + (resolv_vma != 0));
3075 p = relplt->relocation + count - 1;
3076 for (i = 0; i < count; i++)
3080 *s = **p->sym_ptr_ptr;
3081 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3082 we are defining a symbol, ensure one of them is set. */
3083 if ((s->flags & BSF_LOCAL) == 0)
3084 s->flags |= BSF_GLOBAL;
3085 s->flags |= BSF_SYNTHETIC;
3088 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3090 s->value = stub_vma - glink->vma;
3093 len = strlen ((*p->sym_ptr_ptr)->name);
3094 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3098 memcpy (names, "+0x", sizeof ("+0x") - 1);
3099 names += sizeof ("+0x") - 1;
3100 bfd_sprintf_vma (abfd, names, p->addend);
3101 names += strlen (names);
3103 memcpy (names, "@plt", sizeof ("@plt"));
3104 names += sizeof ("@plt");
3109 /* Add a symbol at the start of the glink branch table. */
3110 memset (s, 0, sizeof *s);
3112 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3114 s->value = glink_vma - glink->vma;
3116 memcpy (names, "__glink", sizeof ("__glink"));
3117 names += sizeof ("__glink");
3123 /* Add a symbol for the glink PLT resolver. */
3124 memset (s, 0, sizeof *s);
3126 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3128 s->value = resolv_vma - glink->vma;
3130 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3131 names += sizeof ("__glink_PLTresolve");
3139 /* The following functions are specific to the ELF linker, while
3140 functions above are used generally. They appear in this file more
3141 or less in the order in which they are called. eg.
3142 ppc_elf_check_relocs is called early in the link process,
3143 ppc_elf_finish_dynamic_sections is one of the last functions
3146 /* Track PLT entries needed for a given symbol. We might need more
3147 than one glink entry per symbol when generating a pic binary. */
3150 struct plt_entry *next;
3152 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3153 This field stores the offset into .got2 used to initialise the
3154 GOT pointer reg. It will always be at least 32768. (Current
3155 gcc always uses an offset of 32768, but ld -r will pack .got2
3156 sections together resulting in larger offsets). */
3159 /* The .got2 section. */
3162 /* PLT refcount or offset. */
3165 bfd_signed_vma refcount;
3169 /* .glink stub offset. */
3170 bfd_vma glink_offset;
3173 /* Of those relocs that might be copied as dynamic relocs, this function
3174 selects those that must be copied when linking a shared library,
3175 even when the symbol is local. */
3178 must_be_dyn_reloc (struct bfd_link_info *info,
3179 enum elf_ppc_reloc_type r_type)
3188 case R_PPC_REL14_BRTAKEN:
3189 case R_PPC_REL14_BRNTAKEN:
3195 case R_PPC_TPREL16_LO:
3196 case R_PPC_TPREL16_HI:
3197 case R_PPC_TPREL16_HA:
3198 return !bfd_link_executable (info);
3202 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3203 copying dynamic variables from a shared lib into an app's dynbss
3204 section, and instead use a dynamic relocation to point into the
3206 #define ELIMINATE_COPY_RELOCS 1
3208 /* Used to track dynamic relocations for local symbols. */
3209 struct ppc_dyn_relocs
3211 struct ppc_dyn_relocs *next;
3213 /* The input section of the reloc. */
3216 /* Total number of relocs copied for the input section. */
3217 unsigned int count : 31;
3219 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3220 unsigned int ifunc : 1;
3223 /* PPC ELF linker hash entry. */
3225 struct ppc_elf_link_hash_entry
3227 struct elf_link_hash_entry elf;
3229 /* If this symbol is used in the linker created sections, the processor
3230 specific backend uses this field to map the field into the offset
3231 from the beginning of the section. */
3232 elf_linker_section_pointers_t *linker_section_pointer;
3234 /* Track dynamic relocs copied for this symbol. */
3235 struct elf_dyn_relocs *dyn_relocs;
3237 /* Contexts in which symbol is used in the GOT (or TOC).
3238 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3239 corresponding relocs are encountered during check_relocs.
3240 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3241 indicate the corresponding GOT entry type is not needed. */
3242 #define TLS_GD 1 /* GD reloc. */
3243 #define TLS_LD 2 /* LD reloc. */
3244 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3245 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3246 #define TLS_TLS 16 /* Any TLS reloc. */
3247 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3248 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3251 /* Nonzero if we have seen a small data relocation referring to this
3253 unsigned char has_sda_refs : 1;
3255 /* Flag use of given relocations. */
3256 unsigned char has_addr16_ha : 1;
3257 unsigned char has_addr16_lo : 1;
3260 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3262 /* PPC ELF linker hash table. */
3264 struct ppc_elf_link_hash_table
3266 struct elf_link_hash_table elf;
3268 /* Various options passed from the linker. */
3269 struct ppc_elf_params *params;
3271 /* Short-cuts to get to dynamic linker sections. */
3283 elf_linker_section_t sdata[2];
3285 asection *glink_eh_frame;
3287 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3290 /* The .got.plt section (VxWorks only)*/
3293 /* Shortcut to __tls_get_addr. */
3294 struct elf_link_hash_entry *tls_get_addr;
3296 /* The bfd that forced an old-style PLT. */
3299 /* TLS local dynamic got entry handling. */
3301 bfd_signed_vma refcount;
3305 /* Offset of branch table to PltResolve function in glink. */
3306 bfd_vma glink_pltresolve;
3308 /* Size of reserved GOT entries. */
3309 unsigned int got_header_size;
3310 /* Non-zero if allocating the header left a gap. */
3311 unsigned int got_gap;
3313 /* The type of PLT we have chosen to use. */
3314 enum ppc_elf_plt_type plt_type;
3316 /* True if the target system is VxWorks. */
3317 unsigned int is_vxworks:1;
3319 /* The size of PLT entries. */
3321 /* The distance between adjacent PLT slots. */
3323 /* The size of the first PLT entry. */
3324 int plt_initial_entry_size;
3326 /* Small local sym cache. */
3327 struct sym_cache sym_cache;
3330 /* Rename some of the generic section flags to better document how they
3331 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3333 /* Nonzero if this section has TLS related relocations. */
3334 #define has_tls_reloc sec_flg0
3336 /* Nonzero if this section has a call to __tls_get_addr. */
3337 #define has_tls_get_addr_call sec_flg1
3339 /* Get the PPC ELF linker hash table from a link_info structure. */
3341 #define ppc_elf_hash_table(p) \
3342 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3343 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3345 /* Create an entry in a PPC ELF linker hash table. */
3347 static struct bfd_hash_entry *
3348 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3349 struct bfd_hash_table *table,
3352 /* Allocate the structure if it has not already been allocated by a
3356 entry = bfd_hash_allocate (table,
3357 sizeof (struct ppc_elf_link_hash_entry));
3362 /* Call the allocation method of the superclass. */
3363 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3366 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3367 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3368 ppc_elf_hash_entry (entry)->tls_mask = 0;
3369 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3375 /* Create a PPC ELF linker hash table. */
3377 static struct bfd_link_hash_table *
3378 ppc_elf_link_hash_table_create (bfd *abfd)
3380 struct ppc_elf_link_hash_table *ret;
3381 static struct ppc_elf_params default_params
3382 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0 };
3384 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3388 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3389 ppc_elf_link_hash_newfunc,
3390 sizeof (struct ppc_elf_link_hash_entry),
3397 ret->elf.init_plt_refcount.refcount = 0;
3398 ret->elf.init_plt_refcount.glist = NULL;
3399 ret->elf.init_plt_offset.offset = 0;
3400 ret->elf.init_plt_offset.glist = NULL;
3402 ret->params = &default_params;
3404 ret->sdata[0].name = ".sdata";
3405 ret->sdata[0].sym_name = "_SDA_BASE_";
3406 ret->sdata[0].bss_name = ".sbss";
3408 ret->sdata[1].name = ".sdata2";
3409 ret->sdata[1].sym_name = "_SDA2_BASE_";
3410 ret->sdata[1].bss_name = ".sbss2";
3412 ret->plt_entry_size = 12;
3413 ret->plt_slot_size = 8;
3414 ret->plt_initial_entry_size = 72;
3416 return &ret->elf.root;
3419 /* Hook linker params into hash table. */
3422 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3424 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3427 htab->params = params;
3428 params->pagesize_p2 = bfd_log2 (params->pagesize);
3431 /* Create .got and the related sections. */
3434 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3436 struct ppc_elf_link_hash_table *htab;
3440 if (!_bfd_elf_create_got_section (abfd, info))
3443 htab = ppc_elf_hash_table (info);
3444 htab->got = s = bfd_get_linker_section (abfd, ".got");
3448 if (htab->is_vxworks)
3450 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3456 /* The powerpc .got has a blrl instruction in it. Mark it
3458 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3459 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3460 if (!bfd_set_section_flags (abfd, s, flags))
3464 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3471 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3472 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3473 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3476 ppc_elf_create_linker_section (bfd *abfd,
3477 struct bfd_link_info *info,
3479 elf_linker_section_t *lsect)
3483 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3484 | SEC_LINKER_CREATED);
3486 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3491 /* Define the sym on the first section of this name. */
3492 s = bfd_get_section_by_name (abfd, lsect->name);
3494 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3495 if (lsect->sym == NULL)
3497 lsect->sym->root.u.def.value = 0x8000;
3502 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3504 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3508 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3509 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3510 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3513 || !bfd_set_section_alignment (abfd, s,
3514 htab->params->ppc476_workaround ? 6 : 4))
3517 if (!info->no_ld_generated_unwind_info)
3519 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3520 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3521 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3522 htab->glink_eh_frame = s;
3524 || !bfd_set_section_alignment (abfd, s, 2))
3528 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3529 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3532 || !bfd_set_section_alignment (abfd, s, 4))
3535 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3536 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3537 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3540 || ! bfd_set_section_alignment (abfd, s, 2))
3543 if (!ppc_elf_create_linker_section (abfd, info, 0,
3547 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3554 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3555 to output sections (just like _bfd_elf_create_dynamic_sections has
3556 to create .dynbss and .rela.bss). */
3559 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3561 struct ppc_elf_link_hash_table *htab;
3565 htab = ppc_elf_hash_table (info);
3567 if (htab->got == NULL
3568 && !ppc_elf_create_got (abfd, info))
3571 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3574 if (htab->glink == NULL
3575 && !ppc_elf_create_glink (abfd, info))
3578 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3579 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3580 SEC_ALLOC | SEC_LINKER_CREATED);
3585 if (! bfd_link_pic (info))
3587 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3588 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3589 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3590 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3593 || ! bfd_set_section_alignment (abfd, s, 2))
3597 if (htab->is_vxworks
3598 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3601 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3602 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3606 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3607 if (htab->plt_type == PLT_VXWORKS)
3608 /* The VxWorks PLT is a loaded section with contents. */
3609 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3610 return bfd_set_section_flags (abfd, s, flags);
3613 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3616 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3617 struct elf_link_hash_entry *dir,
3618 struct elf_link_hash_entry *ind)
3620 struct ppc_elf_link_hash_entry *edir, *eind;
3622 edir = (struct ppc_elf_link_hash_entry *) dir;
3623 eind = (struct ppc_elf_link_hash_entry *) ind;
3625 edir->tls_mask |= eind->tls_mask;
3626 edir->has_sda_refs |= eind->has_sda_refs;
3628 /* If called to transfer flags for a weakdef during processing
3629 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3630 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3631 if (!(ELIMINATE_COPY_RELOCS
3632 && eind->elf.root.type != bfd_link_hash_indirect
3633 && edir->elf.dynamic_adjusted))
3634 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3636 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3637 edir->elf.ref_regular |= eind->elf.ref_regular;
3638 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3639 edir->elf.needs_plt |= eind->elf.needs_plt;
3640 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3642 if (eind->dyn_relocs != NULL)
3644 if (edir->dyn_relocs != NULL)
3646 struct elf_dyn_relocs **pp;
3647 struct elf_dyn_relocs *p;
3649 /* Add reloc counts against the indirect sym to the direct sym
3650 list. Merge any entries against the same section. */
3651 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3653 struct elf_dyn_relocs *q;
3655 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3656 if (q->sec == p->sec)
3658 q->pc_count += p->pc_count;
3659 q->count += p->count;
3666 *pp = edir->dyn_relocs;
3669 edir->dyn_relocs = eind->dyn_relocs;
3670 eind->dyn_relocs = NULL;
3673 /* If we were called to copy over info for a weak sym, that's all.
3674 You might think dyn_relocs need not be copied over; After all,
3675 both syms will be dynamic or both non-dynamic so we're just
3676 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3677 code in ppc_elf_adjust_dynamic_symbol needs to check for
3678 dyn_relocs in read-only sections, and it does so on what is the
3680 if (eind->elf.root.type != bfd_link_hash_indirect)
3683 /* Copy over the GOT refcount entries that we may have already seen to
3684 the symbol which just became indirect. */
3685 edir->elf.got.refcount += eind->elf.got.refcount;
3686 eind->elf.got.refcount = 0;
3688 /* And plt entries. */
3689 if (eind->elf.plt.plist != NULL)
3691 if (edir->elf.plt.plist != NULL)
3693 struct plt_entry **entp;
3694 struct plt_entry *ent;
3696 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3698 struct plt_entry *dent;
3700 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3701 if (dent->sec == ent->sec && dent->addend == ent->addend)
3703 dent->plt.refcount += ent->plt.refcount;
3710 *entp = edir->elf.plt.plist;
3713 edir->elf.plt.plist = eind->elf.plt.plist;
3714 eind->elf.plt.plist = NULL;
3717 if (eind->elf.dynindx != -1)
3719 if (edir->elf.dynindx != -1)
3720 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3721 edir->elf.dynstr_index);
3722 edir->elf.dynindx = eind->elf.dynindx;
3723 edir->elf.dynstr_index = eind->elf.dynstr_index;
3724 eind->elf.dynindx = -1;
3725 eind->elf.dynstr_index = 0;
3729 /* Hook called by the linker routine which adds symbols from an object
3730 file. We use it to put .comm items in .sbss, and not .bss. */
3733 ppc_elf_add_symbol_hook (bfd *abfd,
3734 struct bfd_link_info *info,
3735 Elf_Internal_Sym *sym,
3736 const char **namep ATTRIBUTE_UNUSED,
3737 flagword *flagsp ATTRIBUTE_UNUSED,
3741 if (sym->st_shndx == SHN_COMMON
3742 && !bfd_link_relocatable (info)
3743 && is_ppc_elf (info->output_bfd)
3744 && sym->st_size <= elf_gp_size (abfd))
3746 /* Common symbols less than or equal to -G nn bytes are automatically
3748 struct ppc_elf_link_hash_table *htab;
3750 htab = ppc_elf_hash_table (info);
3751 if (htab->sbss == NULL)
3753 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3755 if (!htab->elf.dynobj)
3756 htab->elf.dynobj = abfd;
3758 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3761 if (htab->sbss == NULL)
3766 *valp = sym->st_size;
3769 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3770 && (abfd->flags & DYNAMIC) == 0
3771 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3772 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3777 /* Find a linker generated pointer with a given addend and type. */
3779 static elf_linker_section_pointers_t *
3780 elf_find_pointer_linker_section
3781 (elf_linker_section_pointers_t *linker_pointers,
3783 elf_linker_section_t *lsect)
3785 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3786 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3787 return linker_pointers;
3792 /* Allocate a pointer to live in a linker created section. */
3795 elf_allocate_pointer_linker_section (bfd *abfd,
3796 elf_linker_section_t *lsect,
3797 struct elf_link_hash_entry *h,
3798 const Elf_Internal_Rela *rel)
3800 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3801 elf_linker_section_pointers_t *linker_section_ptr;
3802 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3805 BFD_ASSERT (lsect != NULL);
3807 /* Is this a global symbol? */
3810 struct ppc_elf_link_hash_entry *eh;
3812 /* Has this symbol already been allocated? If so, our work is done. */
3813 eh = (struct ppc_elf_link_hash_entry *) h;
3814 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3819 ptr_linker_section_ptr = &eh->linker_section_pointer;
3823 BFD_ASSERT (is_ppc_elf (abfd));
3825 /* Allocation of a pointer to a local symbol. */
3826 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3828 /* Allocate a table to hold the local symbols if first time. */
3831 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3834 amt *= sizeof (elf_linker_section_pointers_t *);
3835 ptr = bfd_zalloc (abfd, amt);
3840 elf_local_ptr_offsets (abfd) = ptr;
3843 /* Has this symbol already been allocated? If so, our work is done. */
3844 if (elf_find_pointer_linker_section (ptr[r_symndx],
3849 ptr_linker_section_ptr = &ptr[r_symndx];
3852 /* Allocate space for a pointer in the linker section, and allocate
3853 a new pointer record from internal memory. */
3854 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3855 amt = sizeof (elf_linker_section_pointers_t);
3856 linker_section_ptr = bfd_alloc (abfd, amt);
3858 if (!linker_section_ptr)
3861 linker_section_ptr->next = *ptr_linker_section_ptr;
3862 linker_section_ptr->addend = rel->r_addend;
3863 linker_section_ptr->lsect = lsect;
3864 *ptr_linker_section_ptr = linker_section_ptr;
3866 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3868 linker_section_ptr->offset = lsect->section->size;
3869 lsect->section->size += 4;
3873 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3874 lsect->name, (long) linker_section_ptr->offset,
3875 (long) lsect->section->size);
3881 static struct plt_entry **
3882 update_local_sym_info (bfd *abfd,
3883 Elf_Internal_Shdr *symtab_hdr,
3884 unsigned long r_symndx,
3887 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3888 struct plt_entry **local_plt;
3889 char *local_got_tls_masks;
3891 if (local_got_refcounts == NULL)
3893 bfd_size_type size = symtab_hdr->sh_info;
3895 size *= (sizeof (*local_got_refcounts)
3896 + sizeof (*local_plt)
3897 + sizeof (*local_got_tls_masks));
3898 local_got_refcounts = bfd_zalloc (abfd, size);
3899 if (local_got_refcounts == NULL)
3901 elf_local_got_refcounts (abfd) = local_got_refcounts;
3904 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3905 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3906 local_got_tls_masks[r_symndx] |= tls_type;
3907 if (tls_type != PLT_IFUNC)
3908 local_got_refcounts[r_symndx] += 1;
3909 return local_plt + r_symndx;
3913 update_plt_info (bfd *abfd, struct plt_entry **plist,
3914 asection *sec, bfd_vma addend)
3916 struct plt_entry *ent;
3920 for (ent = *plist; ent != NULL; ent = ent->next)
3921 if (ent->sec == sec && ent->addend == addend)
3925 bfd_size_type amt = sizeof (*ent);
3926 ent = bfd_alloc (abfd, amt);
3931 ent->addend = addend;
3932 ent->plt.refcount = 0;
3935 ent->plt.refcount += 1;
3939 static struct plt_entry *
3940 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3942 struct plt_entry *ent;
3946 for (ent = *plist; ent != NULL; ent = ent->next)
3947 if (ent->sec == sec && ent->addend == addend)
3953 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3955 return (r_type == R_PPC_PLTREL24
3956 || r_type == R_PPC_LOCAL24PC
3957 || r_type == R_PPC_REL24
3958 || r_type == R_PPC_REL14
3959 || r_type == R_PPC_REL14_BRTAKEN
3960 || r_type == R_PPC_REL14_BRNTAKEN
3961 || r_type == R_PPC_ADDR24
3962 || r_type == R_PPC_ADDR14
3963 || r_type == R_PPC_ADDR14_BRTAKEN
3964 || r_type == R_PPC_ADDR14_BRNTAKEN
3965 || r_type == R_PPC_VLE_REL24);
3969 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3972 (_("%B: relocation %s cannot be used when making a shared object"),
3974 ppc_elf_howto_table[r_type]->name);
3975 bfd_set_error (bfd_error_bad_value);
3978 /* Look through the relocs for a section during the first phase, and
3979 allocate space in the global offset table or procedure linkage
3983 ppc_elf_check_relocs (bfd *abfd,
3984 struct bfd_link_info *info,
3986 const Elf_Internal_Rela *relocs)
3988 struct ppc_elf_link_hash_table *htab;
3989 Elf_Internal_Shdr *symtab_hdr;
3990 struct elf_link_hash_entry **sym_hashes;
3991 const Elf_Internal_Rela *rel;
3992 const Elf_Internal_Rela *rel_end;
3993 asection *got2, *sreloc;
3994 struct elf_link_hash_entry *tga;
3996 if (bfd_link_relocatable (info))
3999 /* Don't do anything special with non-loaded, non-alloced sections.
4000 In particular, any relocs in such sections should not affect GOT
4001 and PLT reference counting (ie. we don't allow them to create GOT
4002 or PLT entries), there's no possibility or desire to optimize TLS
4003 relocs, and there's not much point in propagating relocs to shared
4004 libs that the dynamic linker won't relocate. */
4005 if ((sec->flags & SEC_ALLOC) == 0)
4009 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4013 BFD_ASSERT (is_ppc_elf (abfd));
4015 /* Initialize howto table if not already done. */
4016 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4017 ppc_elf_howto_init ();
4019 htab = ppc_elf_hash_table (info);
4020 if (htab->glink == NULL)
4022 if (htab->elf.dynobj == NULL)
4023 htab->elf.dynobj = abfd;
4024 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4027 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4028 FALSE, FALSE, TRUE);
4029 symtab_hdr = &elf_symtab_hdr (abfd);
4030 sym_hashes = elf_sym_hashes (abfd);
4031 got2 = bfd_get_section_by_name (abfd, ".got2");
4034 rel_end = relocs + sec->reloc_count;
4035 for (rel = relocs; rel < rel_end; rel++)
4037 unsigned long r_symndx;
4038 enum elf_ppc_reloc_type r_type;
4039 struct elf_link_hash_entry *h;
4041 struct plt_entry **ifunc;
4043 r_symndx = ELF32_R_SYM (rel->r_info);
4044 if (r_symndx < symtab_hdr->sh_info)
4048 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4049 while (h->root.type == bfd_link_hash_indirect
4050 || h->root.type == bfd_link_hash_warning)
4051 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4053 /* PR15323, ref flags aren't set for references in the same
4055 h->root.non_ir_ref = 1;
4058 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4059 This shows up in particular in an R_PPC_ADDR32 in the eabi
4062 && htab->got == NULL
4063 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4065 if (htab->elf.dynobj == NULL)
4066 htab->elf.dynobj = abfd;
4067 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4069 BFD_ASSERT (h == htab->elf.hgot);
4073 r_type = ELF32_R_TYPE (rel->r_info);
4075 if (h == NULL && !htab->is_vxworks)
4077 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4082 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4084 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4085 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4090 /* STT_GNU_IFUNC symbols must have a PLT entry;
4091 In a non-pie executable even when there are
4093 if (!bfd_link_pic (info)
4094 || is_branch_reloc (r_type))
4097 if (r_type == R_PPC_PLTREL24)
4099 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4100 if (bfd_link_pic (info))
4101 addend = rel->r_addend;
4103 if (!update_plt_info (abfd, ifunc, got2, addend))
4109 if (!htab->is_vxworks
4110 && is_branch_reloc (r_type)
4115 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4116 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4117 /* We have a new-style __tls_get_addr call with a marker
4121 /* Mark this section as having an old-style call. */
4122 sec->has_tls_get_addr_call = 1;
4129 /* These special tls relocs tie a call to __tls_get_addr with
4130 its parameter symbol. */
4133 case R_PPC_GOT_TLSLD16:
4134 case R_PPC_GOT_TLSLD16_LO:
4135 case R_PPC_GOT_TLSLD16_HI:
4136 case R_PPC_GOT_TLSLD16_HA:
4137 tls_type = TLS_TLS | TLS_LD;
4140 case R_PPC_GOT_TLSGD16:
4141 case R_PPC_GOT_TLSGD16_LO:
4142 case R_PPC_GOT_TLSGD16_HI:
4143 case R_PPC_GOT_TLSGD16_HA:
4144 tls_type = TLS_TLS | TLS_GD;
4147 case R_PPC_GOT_TPREL16:
4148 case R_PPC_GOT_TPREL16_LO:
4149 case R_PPC_GOT_TPREL16_HI:
4150 case R_PPC_GOT_TPREL16_HA:
4151 if (bfd_link_pic (info))
4152 info->flags |= DF_STATIC_TLS;
4153 tls_type = TLS_TLS | TLS_TPREL;
4156 case R_PPC_GOT_DTPREL16:
4157 case R_PPC_GOT_DTPREL16_LO:
4158 case R_PPC_GOT_DTPREL16_HI:
4159 case R_PPC_GOT_DTPREL16_HA:
4160 tls_type = TLS_TLS | TLS_DTPREL;
4162 sec->has_tls_reloc = 1;
4165 /* GOT16 relocations */
4167 case R_PPC_GOT16_LO:
4168 case R_PPC_GOT16_HI:
4169 case R_PPC_GOT16_HA:
4170 /* This symbol requires a global offset table entry. */
4171 if (htab->got == NULL)
4173 if (htab->elf.dynobj == NULL)
4174 htab->elf.dynobj = abfd;
4175 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4180 h->got.refcount += 1;
4181 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4184 /* This is a global offset table entry for a local symbol. */
4185 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4188 /* We may also need a plt entry if the symbol turns out to be
4190 if (h != NULL && !bfd_link_pic (info))
4192 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4197 /* Indirect .sdata relocation. */
4198 case R_PPC_EMB_SDAI16:
4199 if (bfd_link_pic (info))
4201 bad_shared_reloc (abfd, r_type);
4204 htab->sdata[0].sym->ref_regular = 1;
4205 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4210 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4211 h->non_got_ref = TRUE;
4215 /* Indirect .sdata2 relocation. */
4216 case R_PPC_EMB_SDA2I16:
4217 if (bfd_link_pic (info))
4219 bad_shared_reloc (abfd, r_type);
4222 htab->sdata[1].sym->ref_regular = 1;
4223 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4228 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4229 h->non_got_ref = TRUE;
4233 case R_PPC_SDAREL16:
4234 htab->sdata[0].sym->ref_regular = 1;
4237 case R_PPC_VLE_SDAREL_LO16A:
4238 case R_PPC_VLE_SDAREL_LO16D:
4239 case R_PPC_VLE_SDAREL_HI16A:
4240 case R_PPC_VLE_SDAREL_HI16D:
4241 case R_PPC_VLE_SDAREL_HA16A:
4242 case R_PPC_VLE_SDAREL_HA16D:
4245 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4246 h->non_got_ref = TRUE;
4250 case R_PPC_VLE_REL8:
4251 case R_PPC_VLE_REL15:
4252 case R_PPC_VLE_REL24:
4253 case R_PPC_VLE_LO16A:
4254 case R_PPC_VLE_LO16D:
4255 case R_PPC_VLE_HI16A:
4256 case R_PPC_VLE_HI16D:
4257 case R_PPC_VLE_HA16A:
4258 case R_PPC_VLE_HA16D:
4261 case R_PPC_EMB_SDA2REL:
4262 if (bfd_link_pic (info))
4264 bad_shared_reloc (abfd, r_type);
4267 htab->sdata[1].sym->ref_regular = 1;
4270 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4271 h->non_got_ref = TRUE;
4275 case R_PPC_VLE_SDA21_LO:
4276 case R_PPC_VLE_SDA21:
4277 case R_PPC_EMB_SDA21:
4278 case R_PPC_EMB_RELSDA:
4279 if (bfd_link_pic (info))
4281 bad_shared_reloc (abfd, r_type);
4286 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4287 h->non_got_ref = TRUE;
4291 case R_PPC_EMB_NADDR32:
4292 case R_PPC_EMB_NADDR16:
4293 case R_PPC_EMB_NADDR16_LO:
4294 case R_PPC_EMB_NADDR16_HI:
4295 case R_PPC_EMB_NADDR16_HA:
4296 if (bfd_link_pic (info))
4298 bad_shared_reloc (abfd, r_type);
4302 h->non_got_ref = TRUE;
4305 case R_PPC_PLTREL24:
4310 case R_PPC_PLTREL32:
4311 case R_PPC_PLT16_LO:
4312 case R_PPC_PLT16_HI:
4313 case R_PPC_PLT16_HA:
4315 fprintf (stderr, "Reloc requires a PLT entry\n");
4317 /* This symbol requires a procedure linkage table entry. */
4322 /* It does not make sense to have a procedure linkage
4323 table entry for a non-ifunc local symbol. */
4324 info->callbacks->einfo
4325 (_("%P: %H: %s reloc against local symbol\n"),
4326 abfd, sec, rel->r_offset,
4327 ppc_elf_howto_table[r_type]->name);
4328 bfd_set_error (bfd_error_bad_value);
4336 if (r_type == R_PPC_PLTREL24)
4338 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4339 if (bfd_link_pic (info))
4340 addend = rel->r_addend;
4343 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4348 /* The following relocations don't need to propagate the
4349 relocation if linking a shared object since they are
4350 section relative. */
4352 case R_PPC_SECTOFF_LO:
4353 case R_PPC_SECTOFF_HI:
4354 case R_PPC_SECTOFF_HA:
4355 case R_PPC_DTPREL16:
4356 case R_PPC_DTPREL16_LO:
4357 case R_PPC_DTPREL16_HI:
4358 case R_PPC_DTPREL16_HA:
4363 case R_PPC_REL16_LO:
4364 case R_PPC_REL16_HI:
4365 case R_PPC_REL16_HA:
4366 case R_PPC_REL16DX_HA:
4367 ppc_elf_tdata (abfd)->has_rel16 = 1;
4370 /* These are just markers. */
4372 case R_PPC_EMB_MRKREF:
4376 case R_PPC_RELAX_PLT:
4377 case R_PPC_RELAX_PLTREL24:
4380 /* These should only appear in dynamic objects. */
4382 case R_PPC_GLOB_DAT:
4383 case R_PPC_JMP_SLOT:
4384 case R_PPC_RELATIVE:
4385 case R_PPC_IRELATIVE:
4388 /* These aren't handled yet. We'll report an error later. */
4390 case R_PPC_EMB_RELSEC16:
4391 case R_PPC_EMB_RELST_LO:
4392 case R_PPC_EMB_RELST_HI:
4393 case R_PPC_EMB_RELST_HA:
4394 case R_PPC_EMB_BIT_FLD:
4397 /* This refers only to functions defined in the shared library. */
4398 case R_PPC_LOCAL24PC:
4399 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4401 htab->plt_type = PLT_OLD;
4402 htab->old_bfd = abfd;
4404 if (h != NULL && h->type == STT_GNU_IFUNC)
4407 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4412 /* This relocation describes the C++ object vtable hierarchy.
4413 Reconstruct it for later use during GC. */
4414 case R_PPC_GNU_VTINHERIT:
4415 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4419 /* This relocation describes which C++ vtable entries are actually
4420 used. Record for later use during GC. */
4421 case R_PPC_GNU_VTENTRY:
4422 BFD_ASSERT (h != NULL);
4424 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4428 /* We shouldn't really be seeing these. */
4431 case R_PPC_TPREL16_LO:
4432 case R_PPC_TPREL16_HI:
4433 case R_PPC_TPREL16_HA:
4434 if (bfd_link_pic (info))
4435 info->flags |= DF_STATIC_TLS;
4439 case R_PPC_DTPMOD32:
4440 case R_PPC_DTPREL32:
4446 && (sec->flags & SEC_CODE) != 0
4447 && bfd_link_pic (info)
4448 && htab->plt_type == PLT_UNSET)
4450 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4451 the start of a function, which assembles to a REL32
4452 reference to .got2. If we detect one of these, then
4453 force the old PLT layout because the linker cannot
4454 reliably deduce the GOT pointer value needed for
4457 Elf_Internal_Sym *isym;
4459 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4464 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4467 htab->plt_type = PLT_OLD;
4468 htab->old_bfd = abfd;
4471 if (h == NULL || h == htab->elf.hgot)
4477 case R_PPC_ADDR16_LO:
4478 case R_PPC_ADDR16_HI:
4479 case R_PPC_ADDR16_HA:
4482 if (h != NULL && !bfd_link_pic (info))
4484 /* We may need a plt entry if the symbol turns out to be
4485 a function defined in a dynamic object. */
4486 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4489 /* We may need a copy reloc too. */
4491 h->pointer_equality_needed = 1;
4492 if (r_type == R_PPC_ADDR16_HA)
4493 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4494 if (r_type == R_PPC_ADDR16_LO)
4495 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4501 case R_PPC_REL14_BRTAKEN:
4502 case R_PPC_REL14_BRNTAKEN:
4505 if (h == htab->elf.hgot)
4507 if (htab->plt_type == PLT_UNSET)
4509 htab->plt_type = PLT_OLD;
4510 htab->old_bfd = abfd;
4518 case R_PPC_ADDR14_BRTAKEN:
4519 case R_PPC_ADDR14_BRNTAKEN:
4520 if (h != NULL && !bfd_link_pic (info))
4522 /* We may need a plt entry if the symbol turns out to be
4523 a function defined in a dynamic object. */
4525 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4531 /* If we are creating a shared library, and this is a reloc
4532 against a global symbol, or a non PC relative reloc
4533 against a local symbol, then we need to copy the reloc
4534 into the shared library. However, if we are linking with
4535 -Bsymbolic, we do not need to copy a reloc against a
4536 global symbol which is defined in an object we are
4537 including in the link (i.e., DEF_REGULAR is set). At
4538 this point we have not seen all the input files, so it is
4539 possible that DEF_REGULAR is not set now but will be set
4540 later (it is never cleared). In case of a weak definition,
4541 DEF_REGULAR may be cleared later by a strong definition in
4542 a shared library. We account for that possibility below by
4543 storing information in the dyn_relocs field of the hash
4544 table entry. A similar situation occurs when creating
4545 shared libraries and symbol visibility changes render the
4548 If on the other hand, we are creating an executable, we
4549 may need to keep relocations for symbols satisfied by a
4550 dynamic library if we manage to avoid copy relocs for the
4552 if ((bfd_link_pic (info)
4553 && (must_be_dyn_reloc (info, r_type)
4555 && (!SYMBOLIC_BIND (info, h)
4556 || h->root.type == bfd_link_hash_defweak
4557 || !h->def_regular))))
4558 || (ELIMINATE_COPY_RELOCS
4559 && !bfd_link_pic (info)
4561 && (h->root.type == bfd_link_hash_defweak
4562 || !h->def_regular)))
4566 "ppc_elf_check_relocs needs to "
4567 "create relocation for %s\n",
4568 (h && h->root.root.string
4569 ? h->root.root.string : "<unknown>"));
4573 if (htab->elf.dynobj == NULL)
4574 htab->elf.dynobj = abfd;
4576 sreloc = _bfd_elf_make_dynamic_reloc_section
4577 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4583 /* If this is a global symbol, we count the number of
4584 relocations we need for this symbol. */
4587 struct elf_dyn_relocs *p;
4588 struct elf_dyn_relocs **rel_head;
4590 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4592 if (p == NULL || p->sec != sec)
4594 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4597 p->next = *rel_head;
4604 if (!must_be_dyn_reloc (info, r_type))
4609 /* Track dynamic relocs needed for local syms too.
4610 We really need local syms available to do this
4612 struct ppc_dyn_relocs *p;
4613 struct ppc_dyn_relocs **rel_head;
4614 bfd_boolean is_ifunc;
4617 Elf_Internal_Sym *isym;
4619 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4624 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4628 vpp = &elf_section_data (s)->local_dynrel;
4629 rel_head = (struct ppc_dyn_relocs **) vpp;
4630 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4632 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4634 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4636 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4639 p->next = *rel_head;
4642 p->ifunc = is_ifunc;
4656 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4657 and OBFD, and merge non-conflicting ones. */
4659 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4661 bfd *obfd = info->output_bfd;
4662 obj_attribute *in_attr, *in_attrs;
4663 obj_attribute *out_attr, *out_attrs;
4665 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4666 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4668 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4669 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4671 if (in_attr->i != out_attr->i)
4673 int in_fp = in_attr->i & 3;
4674 int out_fp = out_attr->i & 3;
4678 else if (out_fp == 0)
4681 out_attr->i ^= in_fp;
4683 else if (out_fp != 2 && in_fp == 2)
4685 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4686 else if (out_fp == 2 && in_fp != 2)
4688 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4689 else if (out_fp == 1 && in_fp == 3)
4691 (_("Warning: %B uses double-precision hard float, "
4692 "%B uses single-precision hard float"), obfd, ibfd);
4693 else if (out_fp == 3 && in_fp == 1)
4695 (_("Warning: %B uses double-precision hard float, "
4696 "%B uses single-precision hard float"), ibfd, obfd);
4698 in_fp = in_attr->i & 0xc;
4699 out_fp = out_attr->i & 0xc;
4702 else if (out_fp == 0)
4705 out_attr->i ^= in_fp;
4707 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4709 (_("Warning: %B uses 64-bit long double, "
4710 "%B uses 128-bit long double"), ibfd, obfd);
4711 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4713 (_("Warning: %B uses 64-bit long double, "
4714 "%B uses 128-bit long double"), obfd, ibfd);
4715 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4717 (_("Warning: %B uses IBM long double, "
4718 "%B uses IEEE long double"), ibfd, obfd);
4719 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4721 (_("Warning: %B uses IBM long double, "
4722 "%B uses IEEE long double"), obfd, ibfd);
4726 /* Merge object attributes from IBFD into OBFD. Warn if
4727 there are conflicting attributes. */
4729 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4732 obj_attribute *in_attr, *in_attrs;
4733 obj_attribute *out_attr, *out_attrs;
4735 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4737 obfd = info->output_bfd;
4738 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4739 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4741 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4742 merge non-conflicting ones. */
4743 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4744 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4745 if (in_attr->i != out_attr->i)
4747 int in_vec = in_attr->i & 3;
4748 int out_vec = out_attr->i & 3;
4752 else if (out_vec == 0)
4755 out_attr->i = in_vec;
4757 /* For now, allow generic to transition to AltiVec or SPE
4758 without a warning. If GCC marked files with their stack
4759 alignment and used don't-care markings for files which are
4760 not affected by the vector ABI, we could warn about this
4762 else if (in_vec == 1)
4764 else if (out_vec == 1)
4767 out_attr->i = in_vec;
4769 else if (out_vec < in_vec)
4771 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4773 else if (out_vec > in_vec)
4775 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4779 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4780 and merge non-conflicting ones. */
4781 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4782 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4783 if (in_attr->i != out_attr->i)
4785 int in_struct = in_attr->i & 3;
4786 int out_struct = out_attr->i & 3;
4788 if (in_struct == 0 || in_struct == 3)
4790 else if (out_struct == 0)
4793 out_attr->i = in_struct;
4795 else if (out_struct < in_struct)
4797 (_("Warning: %B uses r3/r4 for small structure returns, "
4798 "%B uses memory"), obfd, ibfd);
4799 else if (out_struct > in_struct)
4801 (_("Warning: %B uses r3/r4 for small structure returns, "
4802 "%B uses memory"), ibfd, obfd);
4805 /* Merge Tag_compatibility attributes and any common GNU ones. */
4806 _bfd_elf_merge_object_attributes (ibfd, info);
4811 /* Merge backend specific data from an object file to the output
4812 object file when linking. */
4815 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4817 bfd *obfd = info->output_bfd;
4822 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4825 /* Check if we have the same endianness. */
4826 if (! _bfd_generic_verify_endian_match (ibfd, info))
4829 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4832 new_flags = elf_elfheader (ibfd)->e_flags;
4833 old_flags = elf_elfheader (obfd)->e_flags;
4834 if (!elf_flags_init (obfd))
4836 /* First call, no flags set. */
4837 elf_flags_init (obfd) = TRUE;
4838 elf_elfheader (obfd)->e_flags = new_flags;
4841 /* Compatible flags are ok. */
4842 else if (new_flags == old_flags)
4845 /* Incompatible flags. */
4848 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4849 to be linked with either. */
4851 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4852 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4856 (_("%B: compiled with -mrelocatable and linked with "
4857 "modules compiled normally"), ibfd);
4859 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4860 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4864 (_("%B: compiled normally and linked with "
4865 "modules compiled with -mrelocatable"), ibfd);
4868 /* The output is -mrelocatable-lib iff both the input files are. */
4869 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4870 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4872 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4873 but each input file is either -mrelocatable or -mrelocatable-lib. */
4874 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4875 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4876 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4877 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4879 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4880 any module uses it. */
4881 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4883 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4884 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4886 /* Warn about any other mismatches. */
4887 if (new_flags != old_flags)
4891 (_("%B: uses different e_flags (0x%lx) fields "
4892 "than previous modules (0x%lx)"),
4893 ibfd, (long) new_flags, (long) old_flags);
4898 bfd_set_error (bfd_error_bad_value);
4907 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4909 split16_format_type split16_format)
4912 unsigned int insn, top5;
4914 insn = bfd_get_32 (output_bfd, loc);
4915 top5 = value & 0xf800;
4916 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4917 insn &= (split16_format == split16a_type ? ~0x1f007ff : ~0x1f07ff);
4919 insn |= value & 0x7ff;
4920 bfd_put_32 (output_bfd, insn, loc);
4924 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4925 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4927 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4928 struct bfd_link_info *info)
4930 struct ppc_elf_link_hash_table *htab;
4933 htab = ppc_elf_hash_table (info);
4935 if (htab->plt_type == PLT_UNSET)
4937 struct elf_link_hash_entry *h;
4939 if (htab->params->plt_style == PLT_OLD)
4940 htab->plt_type = PLT_OLD;
4941 else if (bfd_link_pic (info)
4942 && htab->elf.dynamic_sections_created
4943 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4944 FALSE, FALSE, TRUE)) != NULL
4945 && (h->type == STT_FUNC
4948 && !(SYMBOL_CALLS_LOCAL (info, h)
4949 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4950 && h->root.type == bfd_link_hash_undefweak)))
4952 /* Profiling of shared libs (and pies) is not supported with
4953 secure plt, because ppc32 does profiling before a
4954 function prologue and a secure plt pic call stubs needs
4955 r30 to be set up. */
4956 htab->plt_type = PLT_OLD;
4961 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4963 /* Look through the reloc flags left by ppc_elf_check_relocs.
4964 Use the old style bss plt if a file makes plt calls
4965 without using the new relocs, and if ld isn't given
4966 --secure-plt and we never see REL16 relocs. */
4967 if (plt_type == PLT_UNSET)
4969 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4970 if (is_ppc_elf (ibfd))
4972 if (ppc_elf_tdata (ibfd)->has_rel16)
4974 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4977 htab->old_bfd = ibfd;
4981 htab->plt_type = plt_type;
4984 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4986 if (htab->old_bfd != NULL)
4987 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4990 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4993 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4995 if (htab->plt_type == PLT_NEW)
4997 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4998 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5000 /* The new PLT is a loaded section. */
5001 if (htab->plt != NULL
5002 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
5005 /* The new GOT is not executable. */
5006 if (htab->got != NULL
5007 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
5012 /* Stop an unused .glink section from affecting .text alignment. */
5013 if (htab->glink != NULL
5014 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5017 return htab->plt_type == PLT_NEW;
5020 /* Return the section that should be marked against GC for a given
5024 ppc_elf_gc_mark_hook (asection *sec,
5025 struct bfd_link_info *info,
5026 Elf_Internal_Rela *rel,
5027 struct elf_link_hash_entry *h,
5028 Elf_Internal_Sym *sym)
5031 switch (ELF32_R_TYPE (rel->r_info))
5033 case R_PPC_GNU_VTINHERIT:
5034 case R_PPC_GNU_VTENTRY:
5038 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5041 /* Update the got, plt and dynamic reloc reference counts for the
5042 section being removed. */
5045 ppc_elf_gc_sweep_hook (bfd *abfd,
5046 struct bfd_link_info *info,
5048 const Elf_Internal_Rela *relocs)
5050 struct ppc_elf_link_hash_table *htab;
5051 Elf_Internal_Shdr *symtab_hdr;
5052 struct elf_link_hash_entry **sym_hashes;
5053 bfd_signed_vma *local_got_refcounts;
5054 const Elf_Internal_Rela *rel, *relend;
5057 if (bfd_link_relocatable (info))
5060 if ((sec->flags & SEC_ALLOC) == 0)
5063 elf_section_data (sec)->local_dynrel = NULL;
5065 htab = ppc_elf_hash_table (info);
5066 symtab_hdr = &elf_symtab_hdr (abfd);
5067 sym_hashes = elf_sym_hashes (abfd);
5068 local_got_refcounts = elf_local_got_refcounts (abfd);
5069 got2 = bfd_get_section_by_name (abfd, ".got2");
5071 relend = relocs + sec->reloc_count;
5072 for (rel = relocs; rel < relend; rel++)
5074 unsigned long r_symndx;
5075 enum elf_ppc_reloc_type r_type;
5076 struct elf_link_hash_entry *h = NULL;
5078 r_symndx = ELF32_R_SYM (rel->r_info);
5079 if (r_symndx >= symtab_hdr->sh_info)
5081 struct elf_dyn_relocs **pp, *p;
5082 struct ppc_elf_link_hash_entry *eh;
5084 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5085 while (h->root.type == bfd_link_hash_indirect
5086 || h->root.type == bfd_link_hash_warning)
5087 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5088 eh = (struct ppc_elf_link_hash_entry *) h;
5090 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5093 /* Everything must go for SEC. */
5099 r_type = ELF32_R_TYPE (rel->r_info);
5100 if (!htab->is_vxworks
5102 && local_got_refcounts != NULL
5103 && (!bfd_link_pic (info)
5104 || is_branch_reloc (r_type)))
5106 struct plt_entry **local_plt = (struct plt_entry **)
5107 (local_got_refcounts + symtab_hdr->sh_info);
5108 char *local_got_tls_masks = (char *)
5109 (local_plt + symtab_hdr->sh_info);
5110 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5112 struct plt_entry **ifunc = local_plt + r_symndx;
5114 struct plt_entry *ent;
5116 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5117 addend = rel->r_addend;
5118 ent = find_plt_ent (ifunc, got2, addend);
5119 if (ent->plt.refcount > 0)
5120 ent->plt.refcount -= 1;
5127 case R_PPC_GOT_TLSLD16:
5128 case R_PPC_GOT_TLSLD16_LO:
5129 case R_PPC_GOT_TLSLD16_HI:
5130 case R_PPC_GOT_TLSLD16_HA:
5131 case R_PPC_GOT_TLSGD16:
5132 case R_PPC_GOT_TLSGD16_LO:
5133 case R_PPC_GOT_TLSGD16_HI:
5134 case R_PPC_GOT_TLSGD16_HA:
5135 case R_PPC_GOT_TPREL16:
5136 case R_PPC_GOT_TPREL16_LO:
5137 case R_PPC_GOT_TPREL16_HI:
5138 case R_PPC_GOT_TPREL16_HA:
5139 case R_PPC_GOT_DTPREL16:
5140 case R_PPC_GOT_DTPREL16_LO:
5141 case R_PPC_GOT_DTPREL16_HI:
5142 case R_PPC_GOT_DTPREL16_HA:
5144 case R_PPC_GOT16_LO:
5145 case R_PPC_GOT16_HI:
5146 case R_PPC_GOT16_HA:
5149 if (h->got.refcount > 0)
5151 if (!bfd_link_pic (info))
5153 struct plt_entry *ent;
5155 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5156 if (ent != NULL && ent->plt.refcount > 0)
5157 ent->plt.refcount -= 1;
5160 else if (local_got_refcounts != NULL)
5162 if (local_got_refcounts[r_symndx] > 0)
5163 local_got_refcounts[r_symndx]--;
5169 case R_PPC_REL14_BRTAKEN:
5170 case R_PPC_REL14_BRNTAKEN:
5172 if (h == NULL || h == htab->elf.hgot)
5179 case R_PPC_ADDR16_LO:
5180 case R_PPC_ADDR16_HI:
5181 case R_PPC_ADDR16_HA:
5183 case R_PPC_ADDR14_BRTAKEN:
5184 case R_PPC_ADDR14_BRNTAKEN:
5187 if (bfd_link_pic (info))
5192 case R_PPC_PLTREL24:
5193 case R_PPC_PLTREL32:
5194 case R_PPC_PLT16_LO:
5195 case R_PPC_PLT16_HI:
5196 case R_PPC_PLT16_HA:
5200 struct plt_entry *ent;
5202 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5203 addend = rel->r_addend;
5204 ent = find_plt_ent (&h->plt.plist, got2, addend);
5205 if (ent != NULL && ent->plt.refcount > 0)
5206 ent->plt.refcount -= 1;
5217 /* Set plt output section type, htab->tls_get_addr, and call the
5218 generic ELF tls_setup function. */
5221 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5223 struct ppc_elf_link_hash_table *htab;
5225 htab = ppc_elf_hash_table (info);
5226 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5227 FALSE, FALSE, TRUE);
5228 if (htab->plt_type != PLT_NEW)
5229 htab->params->no_tls_get_addr_opt = TRUE;
5231 if (!htab->params->no_tls_get_addr_opt)
5233 struct elf_link_hash_entry *opt, *tga;
5234 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5235 FALSE, FALSE, TRUE);
5237 && (opt->root.type == bfd_link_hash_defined
5238 || opt->root.type == bfd_link_hash_defweak))
5240 /* If glibc supports an optimized __tls_get_addr call stub,
5241 signalled by the presence of __tls_get_addr_opt, and we'll
5242 be calling __tls_get_addr via a plt call stub, then
5243 make __tls_get_addr point to __tls_get_addr_opt. */
5244 tga = htab->tls_get_addr;
5245 if (htab->elf.dynamic_sections_created
5247 && (tga->type == STT_FUNC
5249 && !(SYMBOL_CALLS_LOCAL (info, tga)
5250 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5251 && tga->root.type == bfd_link_hash_undefweak)))
5253 struct plt_entry *ent;
5254 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5255 if (ent->plt.refcount > 0)
5259 tga->root.type = bfd_link_hash_indirect;
5260 tga->root.u.i.link = &opt->root;
5261 ppc_elf_copy_indirect_symbol (info, opt, tga);
5262 opt->forced_local = 0;
5263 if (opt->dynindx != -1)
5265 /* Use __tls_get_addr_opt in dynamic relocations. */
5267 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5269 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5272 htab->tls_get_addr = opt;
5277 htab->params->no_tls_get_addr_opt = TRUE;
5279 if (htab->plt_type == PLT_NEW
5280 && htab->plt != NULL
5281 && htab->plt->output_section != NULL)
5283 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5284 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5287 return _bfd_elf_tls_setup (obfd, info);
5290 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5294 branch_reloc_hash_match (const bfd *ibfd,
5295 const Elf_Internal_Rela *rel,
5296 const struct elf_link_hash_entry *hash)
5298 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5299 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5300 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5302 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5304 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5305 struct elf_link_hash_entry *h;
5307 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5308 while (h->root.type == bfd_link_hash_indirect
5309 || h->root.type == bfd_link_hash_warning)
5310 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5317 /* Run through all the TLS relocs looking for optimization
5321 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5322 struct bfd_link_info *info)
5326 struct ppc_elf_link_hash_table *htab;
5329 if (!bfd_link_executable (info))
5332 htab = ppc_elf_hash_table (info);
5336 /* Make two passes through the relocs. First time check that tls
5337 relocs involved in setting up a tls_get_addr call are indeed
5338 followed by such a call. If they are not, don't do any tls
5339 optimization. On the second pass twiddle tls_mask flags to
5340 notify relocate_section that optimization can be done, and
5341 adjust got and plt refcounts. */
5342 for (pass = 0; pass < 2; ++pass)
5343 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5345 Elf_Internal_Sym *locsyms = NULL;
5346 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5347 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5349 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5350 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5352 Elf_Internal_Rela *relstart, *rel, *relend;
5353 int expecting_tls_get_addr = 0;
5355 /* Read the relocations. */
5356 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5358 if (relstart == NULL)
5361 relend = relstart + sec->reloc_count;
5362 for (rel = relstart; rel < relend; rel++)
5364 enum elf_ppc_reloc_type r_type;
5365 unsigned long r_symndx;
5366 struct elf_link_hash_entry *h = NULL;
5368 char tls_set, tls_clear;
5369 bfd_boolean is_local;
5370 bfd_signed_vma *got_count;
5372 r_symndx = ELF32_R_SYM (rel->r_info);
5373 if (r_symndx >= symtab_hdr->sh_info)
5375 struct elf_link_hash_entry **sym_hashes;
5377 sym_hashes = elf_sym_hashes (ibfd);
5378 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5379 while (h->root.type == bfd_link_hash_indirect
5380 || h->root.type == bfd_link_hash_warning)
5381 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5389 r_type = ELF32_R_TYPE (rel->r_info);
5390 /* If this section has old-style __tls_get_addr calls
5391 without marker relocs, then check that each
5392 __tls_get_addr call reloc is preceded by a reloc
5393 that conceivably belongs to the __tls_get_addr arg
5394 setup insn. If we don't find matching arg setup
5395 relocs, don't do any tls optimization. */
5397 && sec->has_tls_get_addr_call
5399 && h == htab->tls_get_addr
5400 && !expecting_tls_get_addr
5401 && is_branch_reloc (r_type))
5403 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5404 "TLS optimization disabled\n",
5405 ibfd, sec, rel->r_offset);
5406 if (elf_section_data (sec)->relocs != relstart)
5411 expecting_tls_get_addr = 0;
5414 case R_PPC_GOT_TLSLD16:
5415 case R_PPC_GOT_TLSLD16_LO:
5416 expecting_tls_get_addr = 1;
5419 case R_PPC_GOT_TLSLD16_HI:
5420 case R_PPC_GOT_TLSLD16_HA:
5421 /* These relocs should never be against a symbol
5422 defined in a shared lib. Leave them alone if
5423 that turns out to be the case. */
5432 case R_PPC_GOT_TLSGD16:
5433 case R_PPC_GOT_TLSGD16_LO:
5434 expecting_tls_get_addr = 1;
5437 case R_PPC_GOT_TLSGD16_HI:
5438 case R_PPC_GOT_TLSGD16_HA:
5444 tls_set = TLS_TLS | TLS_TPRELGD;
5448 case R_PPC_GOT_TPREL16:
5449 case R_PPC_GOT_TPREL16_LO:
5450 case R_PPC_GOT_TPREL16_HI:
5451 case R_PPC_GOT_TPREL16_HA:
5456 tls_clear = TLS_TPREL;
5464 expecting_tls_get_addr = 2;
5475 if (!expecting_tls_get_addr
5476 || (expecting_tls_get_addr == 1
5477 && !sec->has_tls_get_addr_call))
5480 if (rel + 1 < relend
5481 && branch_reloc_hash_match (ibfd, rel + 1,
5482 htab->tls_get_addr))
5485 /* Uh oh, we didn't find the expected call. We
5486 could just mark this symbol to exclude it
5487 from tls optimization but it's safer to skip
5488 the entire optimization. */
5489 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5490 "TLS optimization disabled\n"),
5491 ibfd, sec, rel->r_offset);
5492 if (elf_section_data (sec)->relocs != relstart)
5497 if (expecting_tls_get_addr)
5499 struct plt_entry *ent;
5502 if (bfd_link_pic (info)
5503 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5504 addend = rel[1].r_addend;
5505 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5507 if (ent != NULL && ent->plt.refcount > 0)
5508 ent->plt.refcount -= 1;
5510 if (expecting_tls_get_addr == 2)
5516 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5517 got_count = &h->got.refcount;
5521 bfd_signed_vma *lgot_refs;
5522 struct plt_entry **local_plt;
5525 if (locsyms == NULL)
5527 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5528 if (locsyms == NULL)
5529 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5530 symtab_hdr->sh_info,
5531 0, NULL, NULL, NULL);
5532 if (locsyms == NULL)
5534 if (elf_section_data (sec)->relocs != relstart)
5539 lgot_refs = elf_local_got_refcounts (ibfd);
5540 if (lgot_refs == NULL)
5542 local_plt = (struct plt_entry **)
5543 (lgot_refs + symtab_hdr->sh_info);
5544 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5545 tls_mask = &lgot_masks[r_symndx];
5546 got_count = &lgot_refs[r_symndx];
5551 /* We managed to get rid of a got entry. */
5556 *tls_mask |= tls_set;
5557 *tls_mask &= ~tls_clear;
5560 if (elf_section_data (sec)->relocs != relstart)
5565 && (symtab_hdr->contents != (unsigned char *) locsyms))
5567 if (!info->keep_memory)
5570 symtab_hdr->contents = (unsigned char *) locsyms;
5576 /* Return true if we have dynamic relocs that apply to read-only sections. */
5579 readonly_dynrelocs (struct elf_link_hash_entry *h)
5581 struct elf_dyn_relocs *p;
5583 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5585 asection *s = p->sec->output_section;
5588 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5589 == (SEC_READONLY | SEC_ALLOC)))
5595 /* Adjust a symbol defined by a dynamic object and referenced by a
5596 regular object. The current definition is in some section of the
5597 dynamic object, but we're not including those sections. We have to
5598 change the definition to something the rest of the link can
5602 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5603 struct elf_link_hash_entry *h)
5605 struct ppc_elf_link_hash_table *htab;
5609 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5610 h->root.root.string);
5613 /* Make sure we know what is going on here. */
5614 htab = ppc_elf_hash_table (info);
5615 BFD_ASSERT (htab->elf.dynobj != NULL
5617 || h->type == STT_GNU_IFUNC
5618 || h->u.weakdef != NULL
5621 && !h->def_regular)));
5623 /* Deal with function syms. */
5624 if (h->type == STT_FUNC
5625 || h->type == STT_GNU_IFUNC
5628 /* Clear procedure linkage table information for any symbol that
5629 won't need a .plt entry. */
5630 struct plt_entry *ent;
5631 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5632 if (ent->plt.refcount > 0)
5635 || (h->type != STT_GNU_IFUNC
5636 && (SYMBOL_CALLS_LOCAL (info, h)
5637 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5638 && h->root.type == bfd_link_hash_undefweak))))
5640 /* A PLT entry is not required/allowed when:
5642 1. We are not using ld.so; because then the PLT entry
5643 can't be set up, so we can't use one. In this case,
5644 ppc_elf_adjust_dynamic_symbol won't even be called.
5646 2. GC has rendered the entry unused.
5648 3. We know for certain that a call to this symbol
5649 will go to this object, or will remain undefined. */
5650 h->plt.plist = NULL;
5652 h->pointer_equality_needed = 0;
5656 /* Taking a function's address in a read/write section
5657 doesn't require us to define the function symbol in the
5658 executable on a plt call stub. A dynamic reloc can
5660 if (h->pointer_equality_needed
5661 && h->type != STT_GNU_IFUNC
5662 && !htab->is_vxworks
5663 && !ppc_elf_hash_entry (h)->has_sda_refs
5664 && !readonly_dynrelocs (h))
5666 h->pointer_equality_needed = 0;
5670 /* After adjust_dynamic_symbol, non_got_ref set in the
5671 non-shared case means that we have allocated space in
5672 .dynbss for the symbol and thus dyn_relocs for this
5673 symbol should be discarded.
5674 If we get here we know we are making a PLT entry for this
5675 symbol, and in an executable we'd normally resolve
5676 relocations against this symbol to the PLT entry. Allow
5677 dynamic relocs if the reference is weak, and the dynamic
5678 relocs will not cause text relocation. */
5679 else if (!h->ref_regular_nonweak
5681 && h->type != STT_GNU_IFUNC
5682 && !htab->is_vxworks
5683 && !ppc_elf_hash_entry (h)->has_sda_refs
5684 && !readonly_dynrelocs (h))
5687 h->protected_def = 0;
5691 h->plt.plist = NULL;
5693 /* If this is a weak symbol, and there is a real definition, the
5694 processor independent code will have arranged for us to see the
5695 real definition first, and we can just use the same value. */
5696 if (h->u.weakdef != NULL)
5698 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5699 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5700 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5701 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5702 if (ELIMINATE_COPY_RELOCS)
5703 h->non_got_ref = h->u.weakdef->non_got_ref;
5707 /* This is a reference to a symbol defined by a dynamic object which
5708 is not a function. */
5710 /* If we are creating a shared library, we must presume that the
5711 only references to the symbol are via the global offset table.
5712 For such cases we need not do anything here; the relocations will
5713 be handled correctly by relocate_section. */
5714 if (bfd_link_pic (info))
5716 h->protected_def = 0;
5720 /* If there are no references to this symbol that do not use the
5721 GOT, we don't need to generate a copy reloc. */
5722 if (!h->non_got_ref)
5724 h->protected_def = 0;
5728 /* Protected variables do not work with .dynbss. The copy in
5729 .dynbss won't be used by the shared library with the protected
5730 definition for the variable. Editing to PIC, or text relocations
5731 are preferable to an incorrect program. */
5732 if (h->protected_def)
5734 if (ELIMINATE_COPY_RELOCS
5735 && ppc_elf_hash_entry (h)->has_addr16_ha
5736 && ppc_elf_hash_entry (h)->has_addr16_lo
5737 && htab->params->pic_fixup == 0
5738 && info->disable_target_specific_optimizations <= 1)
5739 htab->params->pic_fixup = 1;
5744 /* If -z nocopyreloc was given, we won't generate them either. */
5745 if (info->nocopyreloc)
5751 /* If we didn't find any dynamic relocs in read-only sections, then
5752 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5753 We can't do this if there are any small data relocations. This
5754 doesn't work on VxWorks, where we can not have dynamic
5755 relocations (other than copy and jump slot relocations) in an
5757 if (ELIMINATE_COPY_RELOCS
5758 && !ppc_elf_hash_entry (h)->has_sda_refs
5759 && !htab->is_vxworks
5761 && !readonly_dynrelocs (h))
5767 /* We must allocate the symbol in our .dynbss section, which will
5768 become part of the .bss section of the executable. There will be
5769 an entry for this symbol in the .dynsym section. The dynamic
5770 object will contain position independent code, so all references
5771 from the dynamic object to this symbol will go through the global
5772 offset table. The dynamic linker will use the .dynsym entry to
5773 determine the address it must put in the global offset table, so
5774 both the dynamic object and the regular object will refer to the
5775 same memory location for the variable.
5777 Of course, if the symbol is referenced using SDAREL relocs, we
5778 must instead allocate it in .sbss. */
5780 if (ppc_elf_hash_entry (h)->has_sda_refs)
5784 BFD_ASSERT (s != NULL);
5786 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5787 copy the initial value out of the dynamic object and into the
5788 runtime process image. We need to remember the offset into the
5789 .rela.bss section we are going to use. */
5790 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5794 if (ppc_elf_hash_entry (h)->has_sda_refs)
5795 srel = htab->relsbss;
5797 srel = htab->relbss;
5798 BFD_ASSERT (srel != NULL);
5799 srel->size += sizeof (Elf32_External_Rela);
5803 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5806 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5807 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5808 specifying the addend on the plt relocation. For -fpic code, the sym
5809 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5810 xxxxxxxx.got2.plt_pic32.<callee>. */
5813 add_stub_sym (struct plt_entry *ent,
5814 struct elf_link_hash_entry *h,
5815 struct bfd_link_info *info)
5817 struct elf_link_hash_entry *sh;
5818 size_t len1, len2, len3;
5821 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5823 if (bfd_link_pic (info))
5824 stub = ".plt_pic32.";
5826 stub = ".plt_call32.";
5828 len1 = strlen (h->root.root.string);
5829 len2 = strlen (stub);
5832 len3 = strlen (ent->sec->name);
5833 name = bfd_malloc (len1 + len2 + len3 + 9);
5836 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5838 memcpy (name + 8, ent->sec->name, len3);
5839 memcpy (name + 8 + len3, stub, len2);
5840 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5841 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5844 if (sh->root.type == bfd_link_hash_new)
5846 sh->root.type = bfd_link_hash_defined;
5847 sh->root.u.def.section = htab->glink;
5848 sh->root.u.def.value = ent->glink_offset;
5849 sh->ref_regular = 1;
5850 sh->def_regular = 1;
5851 sh->ref_regular_nonweak = 1;
5852 sh->forced_local = 1;
5854 sh->root.linker_def = 1;
5859 /* Allocate NEED contiguous space in .got, and return the offset.
5860 Handles allocation of the got header when crossing 32k. */
5863 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5866 unsigned int max_before_header;
5868 if (htab->plt_type == PLT_VXWORKS)
5870 where = htab->got->size;
5871 htab->got->size += need;
5875 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5876 if (need <= htab->got_gap)
5878 where = max_before_header - htab->got_gap;
5879 htab->got_gap -= need;
5883 if (htab->got->size + need > max_before_header
5884 && htab->got->size <= max_before_header)
5886 htab->got_gap = max_before_header - htab->got->size;
5887 htab->got->size = max_before_header + htab->got_header_size;
5889 where = htab->got->size;
5890 htab->got->size += need;
5896 /* Allocate space in associated reloc sections for dynamic relocs. */
5899 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5901 struct bfd_link_info *info = inf;
5902 struct ppc_elf_link_hash_entry *eh;
5903 struct ppc_elf_link_hash_table *htab;
5904 struct elf_dyn_relocs *p;
5906 if (h->root.type == bfd_link_hash_indirect)
5909 htab = ppc_elf_hash_table (info);
5910 if (htab->elf.dynamic_sections_created
5911 || h->type == STT_GNU_IFUNC)
5913 struct plt_entry *ent;
5914 bfd_boolean doneone = FALSE;
5915 bfd_vma plt_offset = 0, glink_offset = 0;
5918 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5919 if (ent->plt.refcount > 0)
5921 /* Make sure this symbol is output as a dynamic symbol. */
5922 if (h->dynindx == -1
5925 && htab->elf.dynamic_sections_created)
5927 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5931 dyn = htab->elf.dynamic_sections_created;
5932 if (bfd_link_pic (info)
5933 || h->type == STT_GNU_IFUNC
5934 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5936 asection *s = htab->plt;
5937 if (!dyn || h->dynindx == -1)
5940 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5944 plt_offset = s->size;
5947 ent->plt.offset = plt_offset;
5950 if (!doneone || bfd_link_pic (info))
5952 glink_offset = s->size;
5953 s->size += GLINK_ENTRY_SIZE;
5954 if (h == htab->tls_get_addr
5955 && !htab->params->no_tls_get_addr_opt)
5956 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5959 && !bfd_link_pic (info)
5963 h->root.u.def.section = s;
5964 h->root.u.def.value = glink_offset;
5966 ent->glink_offset = glink_offset;
5968 if (htab->params->emit_stub_syms
5969 && !add_stub_sym (ent, h, info))
5976 /* If this is the first .plt entry, make room
5977 for the special first entry. */
5979 s->size += htab->plt_initial_entry_size;
5981 /* The PowerPC PLT is actually composed of two
5982 parts, the first part is 2 words (for a load
5983 and a jump), and then there is a remaining
5984 word available at the end. */
5985 plt_offset = (htab->plt_initial_entry_size
5986 + (htab->plt_slot_size
5988 - htab->plt_initial_entry_size)
5989 / htab->plt_entry_size)));
5991 /* If this symbol is not defined in a regular
5992 file, and we are not generating a shared
5993 library, then set the symbol to this location
5994 in the .plt. This is to avoid text
5995 relocations, and is required to make
5996 function pointers compare as equal between
5997 the normal executable and the shared library. */
5998 if (! bfd_link_pic (info)
6002 h->root.u.def.section = s;
6003 h->root.u.def.value = plt_offset;
6006 /* Make room for this entry. */
6007 s->size += htab->plt_entry_size;
6008 /* After the 8192nd entry, room for two entries
6010 if (htab->plt_type == PLT_OLD
6011 && (s->size - htab->plt_initial_entry_size)
6012 / htab->plt_entry_size
6013 > PLT_NUM_SINGLE_ENTRIES)
6014 s->size += htab->plt_entry_size;
6016 ent->plt.offset = plt_offset;
6019 /* We also need to make an entry in the .rela.plt section. */
6022 if (!htab->elf.dynamic_sections_created
6023 || h->dynindx == -1)
6024 htab->reliplt->size += sizeof (Elf32_External_Rela);
6027 htab->relplt->size += sizeof (Elf32_External_Rela);
6029 if (htab->plt_type == PLT_VXWORKS)
6031 /* Allocate space for the unloaded relocations. */
6032 if (!bfd_link_pic (info)
6033 && htab->elf.dynamic_sections_created)
6036 == (bfd_vma) htab->plt_initial_entry_size)
6038 htab->srelplt2->size
6039 += (sizeof (Elf32_External_Rela)
6040 * VXWORKS_PLTRESOLVE_RELOCS);
6043 htab->srelplt2->size
6044 += (sizeof (Elf32_External_Rela)
6045 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6048 /* Every PLT entry has an associated GOT entry in
6050 htab->sgotplt->size += 4;
6057 ent->plt.offset = (bfd_vma) -1;
6060 ent->plt.offset = (bfd_vma) -1;
6064 h->plt.plist = NULL;
6070 h->plt.plist = NULL;
6074 eh = (struct ppc_elf_link_hash_entry *) h;
6075 if (eh->elf.got.refcount > 0
6076 || (ELIMINATE_COPY_RELOCS
6077 && !eh->elf.def_regular
6078 && eh->elf.protected_def
6079 && eh->has_addr16_ha
6080 && eh->has_addr16_lo
6081 && htab->params->pic_fixup > 0))
6086 /* Make sure this symbol is output as a dynamic symbol. */
6087 if (eh->elf.dynindx == -1
6088 && !eh->elf.forced_local
6089 && eh->elf.type != STT_GNU_IFUNC
6090 && htab->elf.dynamic_sections_created)
6092 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
6097 if ((eh->tls_mask & TLS_TLS) != 0)
6099 if ((eh->tls_mask & TLS_LD) != 0)
6101 if (!eh->elf.def_dynamic)
6102 /* We'll just use htab->tlsld_got.offset. This should
6103 always be the case. It's a little odd if we have
6104 a local dynamic reloc against a non-local symbol. */
6105 htab->tlsld_got.refcount += 1;
6109 if ((eh->tls_mask & TLS_GD) != 0)
6111 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6113 if ((eh->tls_mask & TLS_DTPREL) != 0)
6119 eh->elf.got.offset = (bfd_vma) -1;
6122 eh->elf.got.offset = allocate_got (htab, need);
6123 dyn = htab->elf.dynamic_sections_created;
6124 if ((bfd_link_pic (info)
6125 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6126 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6127 || eh->elf.root.type != bfd_link_hash_undefweak))
6129 asection *rsec = htab->relgot;
6131 if (eh->elf.type == STT_GNU_IFUNC)
6132 rsec = htab->reliplt;
6133 /* All the entries we allocated need relocs.
6134 Except LD only needs one. */
6135 if ((eh->tls_mask & TLS_LD) != 0
6136 && eh->elf.def_dynamic)
6138 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6143 eh->elf.got.offset = (bfd_vma) -1;
6145 if (eh->dyn_relocs == NULL
6146 || !htab->elf.dynamic_sections_created)
6149 /* In the shared -Bsymbolic case, discard space allocated for
6150 dynamic pc-relative relocs against symbols which turn out to be
6151 defined in regular objects. For the normal shared case, discard
6152 space for relocs that have become local due to symbol visibility
6155 if (bfd_link_pic (info))
6157 /* Relocs that use pc_count are those that appear on a call insn,
6158 or certain REL relocs (see must_be_dyn_reloc) that can be
6159 generated via assembly. We want calls to protected symbols to
6160 resolve directly to the function rather than going via the plt.
6161 If people want function pointer comparisons to work as expected
6162 then they should avoid writing weird assembly. */
6163 if (SYMBOL_CALLS_LOCAL (info, h))
6165 struct elf_dyn_relocs **pp;
6167 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6169 p->count -= p->pc_count;
6178 if (htab->is_vxworks)
6180 struct elf_dyn_relocs **pp;
6182 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6184 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6191 /* Discard relocs on undefined symbols that must be local. */
6192 if (eh->dyn_relocs != NULL
6193 && h->root.type == bfd_link_hash_undefined
6194 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6195 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6196 eh->dyn_relocs = NULL;
6198 /* Also discard relocs on undefined weak syms with non-default
6200 if (eh->dyn_relocs != NULL
6201 && h->root.type == bfd_link_hash_undefweak)
6203 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6204 eh->dyn_relocs = NULL;
6206 /* Make sure undefined weak symbols are output as a dynamic
6208 else if (h->dynindx == -1
6212 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6217 else if (ELIMINATE_COPY_RELOCS)
6219 /* For the non-shared case, discard space for relocs against
6220 symbols which turn out to need copy relocs or are not
6225 && !(h->protected_def
6226 && eh->has_addr16_ha
6227 && eh->has_addr16_lo
6228 && htab->params->pic_fixup > 0))
6230 /* Make sure this symbol is output as a dynamic symbol.
6231 Undefined weak syms won't yet be marked as dynamic. */
6232 if (h->dynindx == -1
6233 && !h->forced_local)
6235 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6239 /* If that succeeded, we know we'll be keeping all the
6241 if (h->dynindx != -1)
6245 eh->dyn_relocs = NULL;
6250 /* Finally, allocate space. */
6251 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6253 asection *sreloc = elf_section_data (p->sec)->sreloc;
6254 if (eh->elf.type == STT_GNU_IFUNC)
6255 sreloc = htab->reliplt;
6256 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6262 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6263 read-only sections. */
6266 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6268 if (h->root.type == bfd_link_hash_indirect)
6271 if (readonly_dynrelocs (h))
6273 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6275 /* Not an error, just cut short the traversal. */
6281 static const unsigned char glink_eh_frame_cie[] =
6283 0, 0, 0, 16, /* length. */
6284 0, 0, 0, 0, /* id. */
6285 1, /* CIE version. */
6286 'z', 'R', 0, /* Augmentation string. */
6287 4, /* Code alignment. */
6288 0x7c, /* Data alignment. */
6290 1, /* Augmentation size. */
6291 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6292 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6295 /* Set the sizes of the dynamic sections. */
6298 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6299 struct bfd_link_info *info)
6301 struct ppc_elf_link_hash_table *htab;
6307 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6310 htab = ppc_elf_hash_table (info);
6311 BFD_ASSERT (htab->elf.dynobj != NULL);
6313 if (elf_hash_table (info)->dynamic_sections_created)
6315 /* Set the contents of the .interp section to the interpreter. */
6316 if (bfd_link_executable (info) && !info->nointerp)
6318 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6319 BFD_ASSERT (s != NULL);
6320 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6321 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6325 if (htab->plt_type == PLT_OLD)
6326 htab->got_header_size = 16;
6327 else if (htab->plt_type == PLT_NEW)
6328 htab->got_header_size = 12;
6330 /* Set up .got offsets for local syms, and space for local dynamic
6332 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6334 bfd_signed_vma *local_got;
6335 bfd_signed_vma *end_local_got;
6336 struct plt_entry **local_plt;
6337 struct plt_entry **end_local_plt;
6339 bfd_size_type locsymcount;
6340 Elf_Internal_Shdr *symtab_hdr;
6342 if (!is_ppc_elf (ibfd))
6345 for (s = ibfd->sections; s != NULL; s = s->next)
6347 struct ppc_dyn_relocs *p;
6349 for (p = ((struct ppc_dyn_relocs *)
6350 elf_section_data (s)->local_dynrel);
6354 if (!bfd_is_abs_section (p->sec)
6355 && bfd_is_abs_section (p->sec->output_section))
6357 /* Input section has been discarded, either because
6358 it is a copy of a linkonce section or due to
6359 linker script /DISCARD/, so we'll be discarding
6362 else if (htab->is_vxworks
6363 && strcmp (p->sec->output_section->name,
6366 /* Relocations in vxworks .tls_vars sections are
6367 handled specially by the loader. */
6369 else if (p->count != 0)
6371 asection *sreloc = elf_section_data (p->sec)->sreloc;
6373 sreloc = htab->reliplt;
6374 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6375 if ((p->sec->output_section->flags
6376 & (SEC_READONLY | SEC_ALLOC))
6377 == (SEC_READONLY | SEC_ALLOC))
6378 info->flags |= DF_TEXTREL;
6383 local_got = elf_local_got_refcounts (ibfd);
6387 symtab_hdr = &elf_symtab_hdr (ibfd);
6388 locsymcount = symtab_hdr->sh_info;
6389 end_local_got = local_got + locsymcount;
6390 local_plt = (struct plt_entry **) end_local_got;
6391 end_local_plt = local_plt + locsymcount;
6392 lgot_masks = (char *) end_local_plt;
6394 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6397 unsigned int need = 0;
6398 if ((*lgot_masks & TLS_TLS) != 0)
6400 if ((*lgot_masks & TLS_GD) != 0)
6402 if ((*lgot_masks & TLS_LD) != 0)
6403 htab->tlsld_got.refcount += 1;
6404 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6406 if ((*lgot_masks & TLS_DTPREL) != 0)
6412 *local_got = (bfd_vma) -1;
6415 *local_got = allocate_got (htab, need);
6416 if (bfd_link_pic (info))
6418 asection *srel = htab->relgot;
6419 if ((*lgot_masks & PLT_IFUNC) != 0)
6420 srel = htab->reliplt;
6421 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6426 *local_got = (bfd_vma) -1;
6428 if (htab->is_vxworks)
6431 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6432 for (; local_plt < end_local_plt; ++local_plt)
6434 struct plt_entry *ent;
6435 bfd_boolean doneone = FALSE;
6436 bfd_vma plt_offset = 0, glink_offset = 0;
6438 for (ent = *local_plt; ent != NULL; ent = ent->next)
6439 if (ent->plt.refcount > 0)
6445 plt_offset = s->size;
6448 ent->plt.offset = plt_offset;
6451 if (!doneone || bfd_link_pic (info))
6453 glink_offset = s->size;
6454 s->size += GLINK_ENTRY_SIZE;
6456 ent->glink_offset = glink_offset;
6460 htab->reliplt->size += sizeof (Elf32_External_Rela);
6465 ent->plt.offset = (bfd_vma) -1;
6469 /* Allocate space for global sym dynamic relocs. */
6470 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6472 if (htab->tlsld_got.refcount > 0)
6474 htab->tlsld_got.offset = allocate_got (htab, 8);
6475 if (bfd_link_pic (info))
6476 htab->relgot->size += sizeof (Elf32_External_Rela);
6479 htab->tlsld_got.offset = (bfd_vma) -1;
6481 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6483 unsigned int g_o_t = 32768;
6485 /* If we haven't allocated the header, do so now. When we get here,
6486 for old plt/got the got size will be 0 to 32764 (not allocated),
6487 or 32780 to 65536 (header allocated). For new plt/got, the
6488 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6489 if (htab->got->size <= 32768)
6491 g_o_t = htab->got->size;
6492 if (htab->plt_type == PLT_OLD)
6494 htab->got->size += htab->got_header_size;
6497 htab->elf.hgot->root.u.def.value = g_o_t;
6499 if (bfd_link_pic (info))
6501 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6503 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6504 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6506 if (info->emitrelocations)
6508 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6510 if (sda != NULL && sda->ref_regular)
6511 sda->root.u.def.section->flags |= SEC_KEEP;
6512 sda = htab->sdata[1].sym;
6513 if (sda != NULL && sda->ref_regular)
6514 sda->root.u.def.section->flags |= SEC_KEEP;
6517 if (htab->glink != NULL
6518 && htab->glink->size != 0
6519 && htab->elf.dynamic_sections_created)
6521 htab->glink_pltresolve = htab->glink->size;
6522 /* Space for the branch table. ??? We don't need entries for
6523 non-dynamic symbols in this table. This case can arise with
6524 static ifuncs or forced local ifuncs. */
6525 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6526 /* Pad out to align the start of PLTresolve. */
6527 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6529 htab->glink->size += GLINK_PLTRESOLVE;
6531 if (htab->params->emit_stub_syms)
6533 struct elf_link_hash_entry *sh;
6534 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6535 TRUE, FALSE, FALSE);
6538 if (sh->root.type == bfd_link_hash_new)
6540 sh->root.type = bfd_link_hash_defined;
6541 sh->root.u.def.section = htab->glink;
6542 sh->root.u.def.value = htab->glink_pltresolve;
6543 sh->ref_regular = 1;
6544 sh->def_regular = 1;
6545 sh->ref_regular_nonweak = 1;
6546 sh->forced_local = 1;
6548 sh->root.linker_def = 1;
6550 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6551 TRUE, FALSE, FALSE);
6554 if (sh->root.type == bfd_link_hash_new)
6556 sh->root.type = bfd_link_hash_defined;
6557 sh->root.u.def.section = htab->glink;
6558 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6559 sh->ref_regular = 1;
6560 sh->def_regular = 1;
6561 sh->ref_regular_nonweak = 1;
6562 sh->forced_local = 1;
6564 sh->root.linker_def = 1;
6569 if (htab->glink != NULL
6570 && htab->glink->size != 0
6571 && htab->glink_eh_frame != NULL
6572 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6573 && _bfd_elf_eh_frame_present (info))
6575 s = htab->glink_eh_frame;
6576 s->size = sizeof (glink_eh_frame_cie) + 20;
6577 if (bfd_link_pic (info))
6580 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6585 /* We've now determined the sizes of the various dynamic sections.
6586 Allocate memory for them. */
6588 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6590 bfd_boolean strip_section = TRUE;
6592 if ((s->flags & SEC_LINKER_CREATED) == 0)
6598 /* We'd like to strip these sections if they aren't needed, but if
6599 we've exported dynamic symbols from them we must leave them.
6600 It's too late to tell BFD to get rid of the symbols. */
6601 if (htab->elf.hplt != NULL)
6602 strip_section = FALSE;
6603 /* Strip this section if we don't need it; see the
6606 else if (s == htab->iplt
6608 || s == htab->glink_eh_frame
6609 || s == htab->sgotplt
6611 || s == htab->dynbss
6612 || s == htab->dynsbss)
6614 /* Strip these too. */
6616 else if (s == htab->sdata[0].section
6617 || s == htab->sdata[1].section)
6619 strip_section = (s->flags & SEC_KEEP) == 0;
6621 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6626 /* Remember whether there are any relocation sections. */
6629 /* We use the reloc_count field as a counter if we need
6630 to copy relocs into the output file. */
6636 /* It's not one of our sections, so don't allocate space. */
6640 if (s->size == 0 && strip_section)
6642 /* If we don't need this section, strip it from the
6643 output file. This is mostly to handle .rela.bss and
6644 .rela.plt. We must create both sections in
6645 create_dynamic_sections, because they must be created
6646 before the linker maps input sections to output
6647 sections. The linker does that before
6648 adjust_dynamic_symbol is called, and it is that
6649 function which decides whether anything needs to go
6650 into these sections. */
6651 s->flags |= SEC_EXCLUDE;
6655 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6658 /* Allocate memory for the section contents. */
6659 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6660 if (s->contents == NULL)
6664 if (htab->elf.dynamic_sections_created)
6666 /* Add some entries to the .dynamic section. We fill in the
6667 values later, in ppc_elf_finish_dynamic_sections, but we
6668 must add the entries now so that we get the correct size for
6669 the .dynamic section. The DT_DEBUG entry is filled in by the
6670 dynamic linker and used by the debugger. */
6671 #define add_dynamic_entry(TAG, VAL) \
6672 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6674 if (bfd_link_executable (info))
6676 if (!add_dynamic_entry (DT_DEBUG, 0))
6680 if (htab->plt != NULL && htab->plt->size != 0)
6682 if (!add_dynamic_entry (DT_PLTGOT, 0)
6683 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6684 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6685 || !add_dynamic_entry (DT_JMPREL, 0))
6689 if (htab->plt_type == PLT_NEW
6690 && htab->glink != NULL
6691 && htab->glink->size != 0)
6693 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6695 if (!htab->params->no_tls_get_addr_opt
6696 && htab->tls_get_addr != NULL
6697 && htab->tls_get_addr->plt.plist != NULL
6698 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6704 if (!add_dynamic_entry (DT_RELA, 0)
6705 || !add_dynamic_entry (DT_RELASZ, 0)
6706 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6710 /* If any dynamic relocs apply to a read-only section, then we
6711 need a DT_TEXTREL entry. */
6712 if ((info->flags & DF_TEXTREL) == 0)
6713 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6716 if ((info->flags & DF_TEXTREL) != 0)
6718 if (!add_dynamic_entry (DT_TEXTREL, 0))
6721 if (htab->is_vxworks
6722 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6725 #undef add_dynamic_entry
6727 if (htab->glink_eh_frame != NULL
6728 && htab->glink_eh_frame->contents != NULL)
6730 unsigned char *p = htab->glink_eh_frame->contents;
6733 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6734 /* CIE length (rewrite in case little-endian). */
6735 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6736 p += sizeof (glink_eh_frame_cie);
6738 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6739 bfd_put_32 (htab->elf.dynobj, val, p);
6742 val = p - htab->glink_eh_frame->contents;
6743 bfd_put_32 (htab->elf.dynobj, val, p);
6745 /* Offset to .glink. Set later. */
6748 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6753 if (bfd_link_pic (info)
6754 && htab->elf.dynamic_sections_created)
6756 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6758 *p++ = DW_CFA_advance_loc + adv;
6761 *p++ = DW_CFA_advance_loc1;
6764 else if (adv < 65536)
6766 *p++ = DW_CFA_advance_loc2;
6767 bfd_put_16 (htab->elf.dynobj, adv, p);
6772 *p++ = DW_CFA_advance_loc4;
6773 bfd_put_32 (htab->elf.dynobj, adv, p);
6776 *p++ = DW_CFA_register;
6779 *p++ = DW_CFA_advance_loc + 4;
6780 *p++ = DW_CFA_restore_extended;
6783 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6784 == htab->glink_eh_frame->size);
6790 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6791 if it looks like nothing is using them. */
6794 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6796 struct elf_link_hash_entry *sda = lsect->sym;
6798 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6802 s = bfd_get_section_by_name (output_bfd, lsect->name);
6803 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6805 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6806 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6808 sda->def_regular = 0;
6809 /* This is somewhat magic. See elf_link_output_extsym. */
6810 sda->ref_dynamic = 1;
6811 sda->forced_local = 0;
6818 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6820 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6824 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6825 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6830 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6833 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6835 if (h->plt.plist != NULL
6837 && (!h->pointer_equality_needed
6838 || !h->ref_regular_nonweak))
6841 return _bfd_elf_hash_symbol (h);
6844 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6846 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6847 used for some functions that are allowed to break the ABI). */
6848 static const int shared_stub_entry[] =
6850 0x7c0802a6, /* mflr 0 */
6851 0x429f0005, /* bcl 20, 31, .Lxxx */
6852 0x7d8802a6, /* mflr 12 */
6853 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6854 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6855 0x7c0803a6, /* mtlr 0 */
6856 0x7d8903a6, /* mtctr 12 */
6857 0x4e800420, /* bctr */
6860 static const int stub_entry[] =
6862 0x3d800000, /* lis 12,xxx@ha */
6863 0x398c0000, /* addi 12,12,xxx@l */
6864 0x7d8903a6, /* mtctr 12 */
6865 0x4e800420, /* bctr */
6868 struct ppc_elf_relax_info
6870 unsigned int workaround_size;
6871 unsigned int picfixup_size;
6874 /* This function implements long branch trampolines, and the ppc476
6875 icache bug workaround. Any section needing trampolines or patch
6876 space for the workaround has its size extended so that we can
6877 add trampolines at the end of the section. */
6880 ppc_elf_relax_section (bfd *abfd,
6882 struct bfd_link_info *link_info,
6885 struct one_branch_fixup
6887 struct one_branch_fixup *next;
6889 /* Final link, can use the symbol offset. For a
6890 relocatable link we use the symbol's index. */
6895 Elf_Internal_Shdr *symtab_hdr;
6896 bfd_byte *contents = NULL;
6897 Elf_Internal_Sym *isymbuf = NULL;
6898 Elf_Internal_Rela *internal_relocs = NULL;
6899 Elf_Internal_Rela *irel, *irelend = NULL;
6900 struct one_branch_fixup *branch_fixups = NULL;
6901 struct ppc_elf_relax_info *relax_info = NULL;
6902 unsigned changes = 0;
6903 bfd_boolean workaround_change;
6904 struct ppc_elf_link_hash_table *htab;
6905 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6907 bfd_boolean maybe_pasted;
6911 /* No need to do anything with non-alloc or non-code sections. */
6912 if ((isec->flags & SEC_ALLOC) == 0
6913 || (isec->flags & SEC_CODE) == 0
6914 || (isec->flags & SEC_LINKER_CREATED) != 0
6918 /* We cannot represent the required PIC relocs in the output, so don't
6919 do anything. The linker doesn't support mixing -shared and -r
6921 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6924 htab = ppc_elf_hash_table (link_info);
6928 isec->size = (isec->size + 3) & -4;
6929 if (isec->rawsize == 0)
6930 isec->rawsize = isec->size;
6931 trampbase = isec->size;
6933 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6934 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6935 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6937 if (htab->params->ppc476_workaround
6938 || htab->params->pic_fixup > 0)
6940 if (elf_section_data (isec)->sec_info == NULL)
6942 elf_section_data (isec)->sec_info
6943 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6944 if (elf_section_data (isec)->sec_info == NULL)
6947 relax_info = elf_section_data (isec)->sec_info;
6948 trampbase -= relax_info->workaround_size;
6951 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6952 || strcmp (isec->output_section->name, ".fini") == 0);
6953 /* Space for a branch around any trampolines. */
6954 trampoff = trampbase;
6955 if (maybe_pasted && trampbase == isec->rawsize)
6958 symtab_hdr = &elf_symtab_hdr (abfd);
6960 if (htab->params->branch_trampolines
6961 || htab->params->pic_fixup > 0)
6963 /* Get a copy of the native relocations. */
6964 if (isec->reloc_count != 0)
6966 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6967 link_info->keep_memory);
6968 if (internal_relocs == NULL)
6972 got2 = bfd_get_section_by_name (abfd, ".got2");
6974 irelend = internal_relocs + isec->reloc_count;
6975 for (irel = internal_relocs; irel < irelend; irel++)
6977 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6980 struct one_branch_fixup *f;
6981 size_t insn_offset = 0;
6982 bfd_vma max_branch_offset = 0, val;
6985 struct elf_link_hash_entry *h;
6986 struct plt_entry **plist;
6987 unsigned char sym_type;
6992 case R_PPC_LOCAL24PC:
6993 case R_PPC_PLTREL24:
6994 max_branch_offset = 1 << 25;
6998 case R_PPC_REL14_BRTAKEN:
6999 case R_PPC_REL14_BRNTAKEN:
7000 max_branch_offset = 1 << 15;
7003 case R_PPC_ADDR16_HA:
7004 if (htab->params->pic_fixup > 0)
7012 /* Get the value of the symbol referred to by the reloc. */
7014 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7016 /* A local symbol. */
7017 Elf_Internal_Sym *isym;
7019 /* Read this BFD's local symbols. */
7020 if (isymbuf == NULL)
7022 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7023 if (isymbuf == NULL)
7024 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7025 symtab_hdr->sh_info, 0,
7030 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7031 if (isym->st_shndx == SHN_UNDEF)
7032 tsec = bfd_und_section_ptr;
7033 else if (isym->st_shndx == SHN_ABS)
7034 tsec = bfd_abs_section_ptr;
7035 else if (isym->st_shndx == SHN_COMMON)
7036 tsec = bfd_com_section_ptr;
7038 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7040 toff = isym->st_value;
7041 sym_type = ELF_ST_TYPE (isym->st_info);
7045 /* Global symbol handling. */
7048 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7049 h = elf_sym_hashes (abfd)[indx];
7051 while (h->root.type == bfd_link_hash_indirect
7052 || h->root.type == bfd_link_hash_warning)
7053 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7055 if (h->root.type == bfd_link_hash_defined
7056 || h->root.type == bfd_link_hash_defweak)
7058 tsec = h->root.u.def.section;
7059 toff = h->root.u.def.value;
7061 else if (h->root.type == bfd_link_hash_undefined
7062 || h->root.type == bfd_link_hash_undefweak)
7064 tsec = bfd_und_section_ptr;
7065 toff = bfd_link_relocatable (link_info) ? indx : 0;
7070 /* If this branch is to __tls_get_addr then we may later
7071 optimise away the call. We won't be needing a long-
7072 branch stub in that case. */
7073 if (bfd_link_executable (link_info)
7074 && h == htab->tls_get_addr
7075 && irel != internal_relocs)
7077 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7078 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7079 unsigned int tls_mask = 0;
7081 /* The previous reloc should be one of R_PPC_TLSGD or
7082 R_PPC_TLSLD, or for older object files, a reloc
7083 on the __tls_get_addr arg setup insn. Get tls
7084 mask bits from the symbol on that reloc. */
7085 if (t_symndx < symtab_hdr->sh_info)
7087 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7089 if (local_got_offsets != NULL)
7091 struct plt_entry **local_plt = (struct plt_entry **)
7092 (local_got_offsets + symtab_hdr->sh_info);
7093 char *lgot_masks = (char *)
7094 (local_plt + symtab_hdr->sh_info);
7095 tls_mask = lgot_masks[t_symndx];
7100 struct elf_link_hash_entry *th
7101 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7103 while (th->root.type == bfd_link_hash_indirect
7104 || th->root.type == bfd_link_hash_warning)
7105 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7108 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7111 /* The mask bits tell us if the call will be
7113 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7114 && (t_rtype == R_PPC_TLSGD
7115 || t_rtype == R_PPC_GOT_TLSGD16
7116 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7118 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7119 && (t_rtype == R_PPC_TLSLD
7120 || t_rtype == R_PPC_GOT_TLSLD16
7121 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7128 if (r_type == R_PPC_ADDR16_HA)
7133 && ppc_elf_hash_entry (h)->has_addr16_ha
7134 && ppc_elf_hash_entry (h)->has_addr16_lo)
7135 picfixup_size += 12;
7139 /* The condition here under which we call find_plt_ent must
7140 match that in relocate_section. If we call find_plt_ent here
7141 but not in relocate_section, or vice versa, then the branch
7142 destination used here may be incorrect. */
7146 /* We know is_branch_reloc (r_type) is true. */
7147 if (h->type == STT_GNU_IFUNC
7148 || r_type == R_PPC_PLTREL24)
7149 plist = &h->plt.plist;
7151 else if (sym_type == STT_GNU_IFUNC
7152 && elf_local_got_offsets (abfd) != NULL)
7154 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7155 struct plt_entry **local_plt = (struct plt_entry **)
7156 (local_got_offsets + symtab_hdr->sh_info);
7157 plist = local_plt + ELF32_R_SYM (irel->r_info);
7162 struct plt_entry *ent;
7164 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7165 addend = irel->r_addend;
7166 ent = find_plt_ent (plist, got2, addend);
7169 if (htab->plt_type == PLT_NEW
7171 || !htab->elf.dynamic_sections_created
7172 || h->dynindx == -1)
7175 toff = ent->glink_offset;
7180 toff = ent->plt.offset;
7185 /* If the branch and target are in the same section, you have
7186 no hope of adding stubs. We'll error out later should the
7191 /* There probably isn't any reason to handle symbols in
7192 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7193 attribute for a code section, and we are only looking at
7194 branches. However, implement it correctly here as a
7195 reference for other target relax_section functions. */
7196 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7198 /* At this stage in linking, no SEC_MERGE symbol has been
7199 adjusted, so all references to such symbols need to be
7200 passed through _bfd_merged_section_offset. (Later, in
7201 relocate_section, all SEC_MERGE symbols *except* for
7202 section symbols have been adjusted.)
7204 gas may reduce relocations against symbols in SEC_MERGE
7205 sections to a relocation against the section symbol when
7206 the original addend was zero. When the reloc is against
7207 a section symbol we should include the addend in the
7208 offset passed to _bfd_merged_section_offset, since the
7209 location of interest is the original symbol. On the
7210 other hand, an access to "sym+addend" where "sym" is not
7211 a section symbol should not include the addend; Such an
7212 access is presumed to be an offset from "sym"; The
7213 location of interest is just "sym". */
7214 if (sym_type == STT_SECTION)
7215 toff += irel->r_addend;
7218 = _bfd_merged_section_offset (abfd, &tsec,
7219 elf_section_data (tsec)->sec_info,
7222 if (sym_type != STT_SECTION)
7223 toff += irel->r_addend;
7225 /* PLTREL24 addends are special. */
7226 else if (r_type != R_PPC_PLTREL24)
7227 toff += irel->r_addend;
7229 /* Attempted -shared link of non-pic code loses. */
7230 if ((!bfd_link_relocatable (link_info)
7231 && tsec == bfd_und_section_ptr)
7232 || tsec->output_section == NULL
7233 || (tsec->owner != NULL
7234 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7237 roff = irel->r_offset;
7239 /* If the branch is in range, no need to do anything. */
7240 if (tsec != bfd_und_section_ptr
7241 && (!bfd_link_relocatable (link_info)
7242 /* A relocatable link may have sections moved during
7243 final link, so do not presume they remain in range. */
7244 || tsec->output_section == isec->output_section))
7246 bfd_vma symaddr, reladdr;
7248 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7249 reladdr = isec->output_section->vma + isec->output_offset + roff;
7250 if (symaddr - reladdr + max_branch_offset
7251 < 2 * max_branch_offset)
7255 /* Look for an existing fixup to this address. */
7256 for (f = branch_fixups; f ; f = f->next)
7257 if (f->tsec == tsec && f->toff == toff)
7263 unsigned long stub_rtype;
7265 val = trampoff - roff;
7266 if (val >= max_branch_offset)
7267 /* Oh dear, we can't reach a trampoline. Don't try to add
7268 one. We'll report an error later. */
7271 if (bfd_link_pic (link_info))
7273 size = 4 * ARRAY_SIZE (shared_stub_entry);
7278 size = 4 * ARRAY_SIZE (stub_entry);
7281 stub_rtype = R_PPC_RELAX;
7282 if (tsec == htab->plt
7283 || tsec == htab->glink)
7285 stub_rtype = R_PPC_RELAX_PLT;
7286 if (r_type == R_PPC_PLTREL24)
7287 stub_rtype = R_PPC_RELAX_PLTREL24;
7290 /* Hijack the old relocation. Since we need two
7291 relocations for this use a "composite" reloc. */
7292 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7294 irel->r_offset = trampoff + insn_offset;
7295 if (r_type == R_PPC_PLTREL24
7296 && stub_rtype != R_PPC_RELAX_PLTREL24)
7299 /* Record the fixup so we don't do it again this section. */
7300 f = bfd_malloc (sizeof (*f));
7301 f->next = branch_fixups;
7304 f->trampoff = trampoff;
7312 val = f->trampoff - roff;
7313 if (val >= max_branch_offset)
7316 /* Nop out the reloc, since we're finalizing things here. */
7317 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7320 /* Get the section contents. */
7321 if (contents == NULL)
7323 /* Get cached copy if it exists. */
7324 if (elf_section_data (isec)->this_hdr.contents != NULL)
7325 contents = elf_section_data (isec)->this_hdr.contents;
7326 /* Go get them off disk. */
7327 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7331 /* Fix up the existing branch to hit the trampoline. */
7332 hit_addr = contents + roff;
7336 case R_PPC_LOCAL24PC:
7337 case R_PPC_PLTREL24:
7338 t0 = bfd_get_32 (abfd, hit_addr);
7340 t0 |= val & 0x3fffffc;
7341 bfd_put_32 (abfd, t0, hit_addr);
7345 case R_PPC_REL14_BRTAKEN:
7346 case R_PPC_REL14_BRNTAKEN:
7347 t0 = bfd_get_32 (abfd, hit_addr);
7350 bfd_put_32 (abfd, t0, hit_addr);
7355 while (branch_fixups != NULL)
7357 struct one_branch_fixup *f = branch_fixups;
7358 branch_fixups = branch_fixups->next;
7363 workaround_change = FALSE;
7365 if (htab->params->ppc476_workaround
7366 && (!bfd_link_relocatable (link_info)
7367 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7369 bfd_vma addr, end_addr;
7370 unsigned int crossings;
7371 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7373 addr = isec->output_section->vma + isec->output_offset;
7374 end_addr = addr + trampoff;
7376 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7379 /* Keep space aligned, to ensure the patch code itself does
7380 not cross a page. Don't decrease size calculated on a
7381 previous pass as otherwise we might never settle on a layout. */
7382 newsize = 15 - ((end_addr - 1) & 15);
7383 newsize += crossings * 16;
7384 if (relax_info->workaround_size < newsize)
7386 relax_info->workaround_size = newsize;
7387 workaround_change = TRUE;
7389 /* Ensure relocate_section is called. */
7390 isec->flags |= SEC_RELOC;
7392 newsize = trampoff + relax_info->workaround_size;
7395 if (htab->params->pic_fixup > 0)
7397 picfixup_size -= relax_info->picfixup_size;
7398 if (picfixup_size != 0)
7399 relax_info->picfixup_size += picfixup_size;
7400 newsize += relax_info->picfixup_size;
7403 if (changes != 0 || picfixup_size != 0 || workaround_change)
7404 isec->size = newsize;
7407 && symtab_hdr->contents != (unsigned char *) isymbuf)
7409 if (! link_info->keep_memory)
7413 /* Cache the symbols for elf_link_input_bfd. */
7414 symtab_hdr->contents = (unsigned char *) isymbuf;
7418 if (contents != NULL
7419 && elf_section_data (isec)->this_hdr.contents != contents)
7421 if (!changes && !link_info->keep_memory)
7425 /* Cache the section contents for elf_link_input_bfd. */
7426 elf_section_data (isec)->this_hdr.contents = contents;
7430 changes += picfixup_size;
7433 /* Append sufficient NOP relocs so we can write out relocation
7434 information for the trampolines. */
7435 Elf_Internal_Shdr *rel_hdr;
7436 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7437 * sizeof (*new_relocs));
7442 memcpy (new_relocs, internal_relocs,
7443 isec->reloc_count * sizeof (*new_relocs));
7444 for (ix = changes; ix--;)
7446 irel = new_relocs + ix + isec->reloc_count;
7448 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7450 if (internal_relocs != elf_section_data (isec)->relocs)
7451 free (internal_relocs);
7452 elf_section_data (isec)->relocs = new_relocs;
7453 isec->reloc_count += changes;
7454 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7455 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7457 else if (internal_relocs != NULL
7458 && elf_section_data (isec)->relocs != internal_relocs)
7459 free (internal_relocs);
7461 *again = changes != 0 || workaround_change;
7465 while (branch_fixups != NULL)
7467 struct one_branch_fixup *f = branch_fixups;
7468 branch_fixups = branch_fixups->next;
7471 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7473 if (contents != NULL
7474 && elf_section_data (isec)->this_hdr.contents != contents)
7476 if (internal_relocs != NULL
7477 && elf_section_data (isec)->relocs != internal_relocs)
7478 free (internal_relocs);
7482 /* What to do when ld finds relocations against symbols defined in
7483 discarded sections. */
7486 ppc_elf_action_discarded (asection *sec)
7488 if (strcmp (".fixup", sec->name) == 0)
7491 if (strcmp (".got2", sec->name) == 0)
7494 return _bfd_elf_default_action_discarded (sec);
7497 /* Fill in the address for a pointer generated in a linker section. */
7500 elf_finish_pointer_linker_section (bfd *input_bfd,
7501 elf_linker_section_t *lsect,
7502 struct elf_link_hash_entry *h,
7504 const Elf_Internal_Rela *rel)
7506 elf_linker_section_pointers_t *linker_section_ptr;
7508 BFD_ASSERT (lsect != NULL);
7512 /* Handle global symbol. */
7513 struct ppc_elf_link_hash_entry *eh;
7515 eh = (struct ppc_elf_link_hash_entry *) h;
7516 BFD_ASSERT (eh->elf.def_regular);
7517 linker_section_ptr = eh->linker_section_pointer;
7521 /* Handle local symbol. */
7522 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7524 BFD_ASSERT (is_ppc_elf (input_bfd));
7525 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7526 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7529 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7532 BFD_ASSERT (linker_section_ptr != NULL);
7534 /* Offset will always be a multiple of four, so use the bottom bit
7535 as a "written" flag. */
7536 if ((linker_section_ptr->offset & 1) == 0)
7538 bfd_put_32 (lsect->section->owner,
7539 relocation + linker_section_ptr->addend,
7540 lsect->section->contents + linker_section_ptr->offset);
7541 linker_section_ptr->offset += 1;
7544 relocation = (lsect->section->output_section->vma
7545 + lsect->section->output_offset
7546 + linker_section_ptr->offset - 1
7547 - SYM_VAL (lsect->sym));
7551 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7552 lsect->name, (long) relocation, (long) relocation);
7558 #define PPC_LO(v) ((v) & 0xffff)
7559 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7560 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7563 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7564 struct bfd_link_info *info)
7566 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7567 bfd *output_bfd = info->output_bfd;
7570 plt = ((ent->plt.offset & ~1)
7571 + plt_sec->output_section->vma
7572 + plt_sec->output_offset);
7574 if (bfd_link_pic (info))
7578 if (ent->addend >= 32768)
7580 + ent->sec->output_section->vma
7581 + ent->sec->output_offset);
7582 else if (htab->elf.hgot != NULL)
7583 got = SYM_VAL (htab->elf.hgot);
7587 if (plt + 0x8000 < 0x10000)
7589 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7591 bfd_put_32 (output_bfd, MTCTR_11, p);
7593 bfd_put_32 (output_bfd, BCTR, p);
7595 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7600 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7602 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7604 bfd_put_32 (output_bfd, MTCTR_11, p);
7606 bfd_put_32 (output_bfd, BCTR, p);
7612 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7614 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7616 bfd_put_32 (output_bfd, MTCTR_11, p);
7618 bfd_put_32 (output_bfd, BCTR, p);
7623 /* Return true if symbol is defined statically. */
7626 is_static_defined (struct elf_link_hash_entry *h)
7628 return ((h->root.type == bfd_link_hash_defined
7629 || h->root.type == bfd_link_hash_defweak)
7630 && h->root.u.def.section != NULL
7631 && h->root.u.def.section->output_section != NULL);
7634 /* If INSN is an opcode that may be used with an @tls operand, return
7635 the transformed insn for TLS optimisation, otherwise return 0. If
7636 REG is non-zero only match an insn with RB or RA equal to REG. */
7639 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7643 if ((insn & (0x3f << 26)) != 31 << 26)
7646 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7647 rtra = insn & ((1 << 26) - (1 << 16));
7648 else if (((insn >> 16) & 0x1f) == reg)
7649 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7653 if ((insn & (0x3ff << 1)) == 266 << 1)
7656 else if ((insn & (0x1f << 1)) == 23 << 1
7657 && ((insn & (0x1f << 6)) < 14 << 6
7658 || ((insn & (0x1f << 6)) >= 16 << 6
7659 && (insn & (0x1f << 6)) < 24 << 6)))
7660 /* load and store indexed -> dform. */
7661 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7662 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7663 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7664 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7665 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7667 insn = (58 << 26) | 2;
7674 /* If INSN is an opcode that may be used with an @tprel operand, return
7675 the transformed insn for an undefined weak symbol, ie. with the
7676 thread pointer REG operand removed. Otherwise return 0. */
7679 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7681 if ((insn & (0x1f << 16)) == reg << 16
7682 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7683 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7684 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7685 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7686 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7687 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7688 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7689 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7690 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7691 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7692 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7693 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7694 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7695 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7696 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7697 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7699 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7700 && ((insn & 3) == 0 || (insn & 3) == 3))))
7702 insn &= ~(0x1f << 16);
7704 else if ((insn & (0x1f << 21)) == reg << 21
7705 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7706 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7707 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7709 insn &= ~(0x1f << 21);
7710 insn |= (insn & (0x1f << 16)) << 5;
7711 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7712 insn -= 2 >> 26; /* convert to ori,oris */
7720 is_insn_ds_form (unsigned int insn)
7722 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7723 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7724 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7725 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7729 is_insn_dq_form (unsigned int insn)
7731 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7732 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7733 && (insn & 3) == 1));
7736 /* The RELOCATE_SECTION function is called by the ELF backend linker
7737 to handle the relocations for a section.
7739 The relocs are always passed as Rela structures; if the section
7740 actually uses Rel structures, the r_addend field will always be
7743 This function is responsible for adjust the section contents as
7744 necessary, and (if using Rela relocs and generating a
7745 relocatable output file) adjusting the reloc addend as
7748 This function does not have to worry about setting the reloc
7749 address or the reloc symbol index.
7751 LOCAL_SYMS is a pointer to the swapped in local symbols.
7753 LOCAL_SECTIONS is an array giving the section in the input file
7754 corresponding to the st_shndx field of each local symbol.
7756 The global hash table entry for the global symbols can be found
7757 via elf_sym_hashes (input_bfd).
7759 When generating relocatable output, this function must handle
7760 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7761 going to be the section symbol corresponding to the output
7762 section, which means that the addend must be adjusted
7766 ppc_elf_relocate_section (bfd *output_bfd,
7767 struct bfd_link_info *info,
7769 asection *input_section,
7771 Elf_Internal_Rela *relocs,
7772 Elf_Internal_Sym *local_syms,
7773 asection **local_sections)
7775 Elf_Internal_Shdr *symtab_hdr;
7776 struct elf_link_hash_entry **sym_hashes;
7777 struct ppc_elf_link_hash_table *htab;
7778 Elf_Internal_Rela *rel;
7779 Elf_Internal_Rela *wrel;
7780 Elf_Internal_Rela *relend;
7781 Elf_Internal_Rela outrel;
7783 bfd_vma *local_got_offsets;
7784 bfd_boolean ret = TRUE;
7785 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7786 bfd_boolean is_vxworks_tls;
7787 unsigned int picfixup_size = 0;
7788 struct ppc_elf_relax_info *relax_info = NULL;
7791 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7792 "%ld relocations%s",
7793 input_bfd, input_section,
7794 (long) input_section->reloc_count,
7795 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7798 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7800 /* Initialize howto table if not already done. */
7801 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7802 ppc_elf_howto_init ();
7804 htab = ppc_elf_hash_table (info);
7805 local_got_offsets = elf_local_got_offsets (input_bfd);
7806 symtab_hdr = &elf_symtab_hdr (input_bfd);
7807 sym_hashes = elf_sym_hashes (input_bfd);
7808 /* We have to handle relocations in vxworks .tls_vars sections
7809 specially, because the dynamic loader is 'weird'. */
7810 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7811 && !strcmp (input_section->output_section->name,
7813 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7814 relax_info = elf_section_data (input_section)->sec_info;
7815 rel = wrel = relocs;
7816 relend = relocs + input_section->reloc_count;
7817 for (; rel < relend; wrel++, rel++)
7819 enum elf_ppc_reloc_type r_type;
7821 bfd_reloc_status_type r;
7822 Elf_Internal_Sym *sym;
7824 struct elf_link_hash_entry *h;
7825 const char *sym_name;
7826 reloc_howto_type *howto;
7827 unsigned long r_symndx;
7829 bfd_vma branch_bit, from;
7830 bfd_boolean unresolved_reloc;
7832 unsigned int tls_type, tls_mask, tls_gd;
7833 struct plt_entry **ifunc;
7834 struct reloc_howto_struct alt_howto;
7837 r_type = ELF32_R_TYPE (rel->r_info);
7841 unresolved_reloc = FALSE;
7843 r_symndx = ELF32_R_SYM (rel->r_info);
7845 if (r_symndx < symtab_hdr->sh_info)
7847 sym = local_syms + r_symndx;
7848 sec = local_sections[r_symndx];
7849 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7851 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7855 bfd_boolean ignored;
7857 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7858 r_symndx, symtab_hdr, sym_hashes,
7860 unresolved_reloc, warned, ignored);
7862 sym_name = h->root.root.string;
7865 if (sec != NULL && discarded_section (sec))
7867 /* For relocs against symbols from removed linkonce sections,
7868 or sections discarded by a linker script, we just want the
7869 section contents zeroed. Avoid any special processing. */
7871 if (r_type < R_PPC_max)
7872 howto = ppc_elf_howto_table[r_type];
7874 _bfd_clear_contents (howto, input_bfd, input_section,
7875 contents + rel->r_offset);
7876 wrel->r_offset = rel->r_offset;
7880 /* For ld -r, remove relocations in debug sections against
7881 sections defined in discarded sections. Not done for
7882 non-debug to preserve relocs in .eh_frame which the
7883 eh_frame editing code expects to be present. */
7884 if (bfd_link_relocatable (info)
7885 && (input_section->flags & SEC_DEBUGGING))
7891 if (bfd_link_relocatable (info))
7894 && r_type == R_PPC_PLTREL24
7895 && rel->r_addend != 0)
7897 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7898 addend specifies the GOT pointer offset within .got2. */
7899 rel->r_addend += got2->output_offset;
7901 if (r_type != R_PPC_RELAX_PLT
7902 && r_type != R_PPC_RELAX_PLTREL24
7903 && r_type != R_PPC_RELAX)
7907 /* TLS optimizations. Replace instruction sequences and relocs
7908 based on information we collected in tls_optimize. We edit
7909 RELOCS so that --emit-relocs will output something sensible
7910 for the final instruction stream. */
7914 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7915 else if (local_got_offsets != NULL)
7917 struct plt_entry **local_plt;
7920 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7921 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7922 tls_mask = lgot_masks[r_symndx];
7925 /* Ensure reloc mapping code below stays sane. */
7926 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7927 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7928 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7929 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7930 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7931 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7932 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7933 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7940 case R_PPC_GOT_TPREL16:
7941 case R_PPC_GOT_TPREL16_LO:
7942 if ((tls_mask & TLS_TLS) != 0
7943 && (tls_mask & TLS_TPREL) == 0)
7947 insn = bfd_get_32 (output_bfd,
7948 contents + rel->r_offset - d_offset);
7950 insn |= 0x3c020000; /* addis 0,2,0 */
7951 bfd_put_32 (output_bfd, insn,
7952 contents + rel->r_offset - d_offset);
7953 r_type = R_PPC_TPREL16_HA;
7954 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7959 if ((tls_mask & TLS_TLS) != 0
7960 && (tls_mask & TLS_TPREL) == 0)
7964 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7965 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7968 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7969 r_type = R_PPC_TPREL16_LO;
7970 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7972 /* Was PPC_TLS which sits on insn boundary, now
7973 PPC_TPREL16_LO which is at low-order half-word. */
7974 rel->r_offset += d_offset;
7978 case R_PPC_GOT_TLSGD16_HI:
7979 case R_PPC_GOT_TLSGD16_HA:
7980 tls_gd = TLS_TPRELGD;
7981 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7985 case R_PPC_GOT_TLSLD16_HI:
7986 case R_PPC_GOT_TLSLD16_HA:
7987 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7990 if ((tls_mask & tls_gd) != 0)
7991 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7992 + R_PPC_GOT_TPREL16);
7995 rel->r_offset -= d_offset;
7996 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7997 r_type = R_PPC_NONE;
7999 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8003 case R_PPC_GOT_TLSGD16:
8004 case R_PPC_GOT_TLSGD16_LO:
8005 tls_gd = TLS_TPRELGD;
8006 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8010 case R_PPC_GOT_TLSLD16:
8011 case R_PPC_GOT_TLSLD16_LO:
8012 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8014 unsigned int insn1, insn2;
8018 offset = (bfd_vma) -1;
8019 /* If not using the newer R_PPC_TLSGD/LD to mark
8020 __tls_get_addr calls, we must trust that the call
8021 stays with its arg setup insns, ie. that the next
8022 reloc is the __tls_get_addr call associated with
8023 the current reloc. Edit both insns. */
8024 if (input_section->has_tls_get_addr_call
8026 && branch_reloc_hash_match (input_bfd, rel + 1,
8027 htab->tls_get_addr))
8028 offset = rel[1].r_offset;
8029 /* We read the low GOT_TLS insn because we need to keep
8030 the destination reg. It may be something other than
8031 the usual r3, and moved to r3 before the call by
8032 intervening code. */
8033 insn1 = bfd_get_32 (output_bfd,
8034 contents + rel->r_offset - d_offset);
8035 if ((tls_mask & tls_gd) != 0)
8038 insn1 &= (0x1f << 21) | (0x1f << 16);
8039 insn1 |= 32 << 26; /* lwz */
8040 if (offset != (bfd_vma) -1)
8042 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8043 insn2 = 0x7c631214; /* add 3,3,2 */
8044 bfd_put_32 (output_bfd, insn2, contents + offset);
8046 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8047 + R_PPC_GOT_TPREL16);
8048 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8053 insn1 &= 0x1f << 21;
8054 insn1 |= 0x3c020000; /* addis r,2,0 */
8057 /* Was an LD reloc. */
8059 r_symndx < symtab_hdr->sh_info;
8061 if (local_sections[r_symndx] == sec)
8063 if (r_symndx >= symtab_hdr->sh_info)
8064 r_symndx = STN_UNDEF;
8065 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8066 if (r_symndx != STN_UNDEF)
8067 rel->r_addend -= (local_syms[r_symndx].st_value
8068 + sec->output_offset
8069 + sec->output_section->vma);
8071 r_type = R_PPC_TPREL16_HA;
8072 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8073 if (offset != (bfd_vma) -1)
8075 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8076 rel[1].r_offset = offset + d_offset;
8077 rel[1].r_addend = rel->r_addend;
8078 insn2 = 0x38630000; /* addi 3,3,0 */
8079 bfd_put_32 (output_bfd, insn2, contents + offset);
8082 bfd_put_32 (output_bfd, insn1,
8083 contents + rel->r_offset - d_offset);
8086 /* We changed the symbol on an LD reloc. Start over
8087 in order to get h, sym, sec etc. right. */
8094 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8097 bfd_vma offset = rel->r_offset;
8099 if ((tls_mask & TLS_TPRELGD) != 0)
8102 r_type = R_PPC_NONE;
8103 insn2 = 0x7c631214; /* add 3,3,2 */
8108 r_type = R_PPC_TPREL16_LO;
8109 rel->r_offset += d_offset;
8110 insn2 = 0x38630000; /* addi 3,3,0 */
8112 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8113 bfd_put_32 (output_bfd, insn2, contents + offset);
8114 /* Zap the reloc on the _tls_get_addr call too. */
8115 BFD_ASSERT (offset == rel[1].r_offset);
8116 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8121 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8126 r_symndx < symtab_hdr->sh_info;
8128 if (local_sections[r_symndx] == sec)
8130 if (r_symndx >= symtab_hdr->sh_info)
8131 r_symndx = STN_UNDEF;
8132 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8133 if (r_symndx != STN_UNDEF)
8134 rel->r_addend -= (local_syms[r_symndx].st_value
8135 + sec->output_offset
8136 + sec->output_section->vma);
8138 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8139 rel->r_offset += d_offset;
8140 insn2 = 0x38630000; /* addi 3,3,0 */
8141 bfd_put_32 (output_bfd, insn2,
8142 contents + rel->r_offset - d_offset);
8143 /* Zap the reloc on the _tls_get_addr call too. */
8144 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8145 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8151 /* Handle other relocations that tweak non-addend part of insn. */
8158 /* Branch taken prediction relocations. */
8159 case R_PPC_ADDR14_BRTAKEN:
8160 case R_PPC_REL14_BRTAKEN:
8161 branch_bit = BRANCH_PREDICT_BIT;
8164 /* Branch not taken prediction relocations. */
8165 case R_PPC_ADDR14_BRNTAKEN:
8166 case R_PPC_REL14_BRNTAKEN:
8170 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8171 insn &= ~BRANCH_PREDICT_BIT;
8174 from = (rel->r_offset
8175 + input_section->output_offset
8176 + input_section->output_section->vma);
8178 /* Invert 'y' bit if not the default. */
8179 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8180 insn ^= BRANCH_PREDICT_BIT;
8182 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8187 if (ELIMINATE_COPY_RELOCS
8191 && ppc_elf_hash_entry (h)->has_addr16_ha
8192 && ppc_elf_hash_entry (h)->has_addr16_lo
8193 && htab->params->pic_fixup > 0)
8195 /* Convert lis;addi or lis;load/store accessing a protected
8196 variable defined in a shared library to PIC. */
8199 if (r_type == R_PPC_ADDR16_HA)
8201 insn = bfd_get_32 (output_bfd,
8202 contents + rel->r_offset - d_offset);
8203 if ((insn & (0x3f << 26)) == (15u << 26)
8204 && (insn & (0x1f << 16)) == 0 /* lis */)
8210 p = (contents + input_section->size
8211 - relax_info->workaround_size
8212 - relax_info->picfixup_size
8214 off = (p - contents) - (rel->r_offset - d_offset);
8215 if (off > 0x1fffffc || (off & 3) != 0)
8216 info->callbacks->einfo
8217 (_("%P: %H: fixup branch overflow\n"),
8218 input_bfd, input_section, rel->r_offset);
8220 bfd_put_32 (output_bfd, B | off,
8221 contents + rel->r_offset - d_offset);
8222 got_addr = (htab->got->output_section->vma
8223 + htab->got->output_offset
8224 + (h->got.offset & ~1));
8225 wrel->r_offset = (p - contents) + d_offset;
8226 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8227 wrel->r_addend = got_addr;
8229 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8230 bfd_put_32 (output_bfd, insn, p);
8232 /* Convert lis to lwz, loading address from GOT. */
8234 insn ^= (32u ^ 15u) << 26;
8235 insn |= (insn & (0x1f << 21)) >> 5;
8236 insn |= got_addr & 0xffff;
8237 bfd_put_32 (output_bfd, insn, p + 4);
8239 bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8240 picfixup_size += 12;
8242 /* Use one of the spare relocs, so --emit-relocs
8243 output is reasonable. */
8244 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8246 rel->r_offset = wrel[-1].r_offset + 4;
8247 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8248 rel->r_addend = wrel[-1].r_addend;
8250 /* Continue on as if we had a got reloc, to output
8252 r_type = R_PPC_GOT16_LO;
8255 info->callbacks->einfo
8256 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8257 input_bfd, input_section, rel->r_offset,
8258 "R_PPC_ADDR16_HA", insn);
8260 else if (r_type == R_PPC_ADDR16_LO)
8262 insn = bfd_get_32 (output_bfd,
8263 contents + rel->r_offset - d_offset);
8264 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8265 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8266 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8267 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8268 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8269 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8270 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8271 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8272 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8273 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8274 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8275 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8276 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8277 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8278 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8280 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8281 && ((insn & 3) == 0 || (insn & 3) == 3)))
8283 /* Arrange to apply the reloc addend, if any. */
8285 unresolved_reloc = FALSE;
8286 rel->r_info = ELF32_R_INFO (0, r_type);
8289 info->callbacks->einfo
8290 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8291 input_bfd, input_section, rel->r_offset,
8292 "R_PPC_ADDR16_LO", insn);
8297 if (!htab->is_vxworks)
8299 struct plt_entry *ent;
8303 if (h->type == STT_GNU_IFUNC)
8304 ifunc = &h->plt.plist;
8306 else if (local_got_offsets != NULL
8307 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8309 struct plt_entry **local_plt;
8311 local_plt = (struct plt_entry **) (local_got_offsets
8312 + symtab_hdr->sh_info);
8313 ifunc = local_plt + r_symndx;
8318 && (!bfd_link_pic (info)
8319 || is_branch_reloc (r_type)))
8322 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8323 addend = rel->r_addend;
8324 ent = find_plt_ent (ifunc, got2, addend);
8328 if (bfd_link_pic (info)
8330 && htab->plt_type != PLT_NEW
8331 && (!htab->elf.dynamic_sections_created
8333 || h->dynindx == -1))
8335 /* Uh oh, we are going to create a pic glink stub
8336 for an ifunc (here for h == NULL and later in
8337 finish_dynamic_symbol for h != NULL), and
8338 apparently are using code compiled with
8339 -mbss-plt. The difficulty is that -mbss-plt code
8340 gives no indication via a magic PLTREL24 addend
8341 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8342 is pointing into a .got2 section (and how far
8344 info->callbacks->einfo
8345 (_("%X%P: %H: unsupported bss-plt -fPIC ifunc %s\n"),
8346 input_bfd, input_section, rel->r_offset, sym_name);
8348 if (h == NULL && (ent->plt.offset & 1) == 0)
8350 Elf_Internal_Rela rela;
8353 rela.r_offset = (htab->iplt->output_section->vma
8354 + htab->iplt->output_offset
8356 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8357 rela.r_addend = relocation;
8358 loc = htab->reliplt->contents;
8359 loc += (htab->reliplt->reloc_count++
8360 * sizeof (Elf32_External_Rela));
8361 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8363 ent->plt.offset |= 1;
8365 if (h == NULL && (ent->glink_offset & 1) == 0)
8367 unsigned char *p = ((unsigned char *) htab->glink->contents
8368 + ent->glink_offset);
8369 write_glink_stub (ent, htab->iplt, p, info);
8370 ent->glink_offset |= 1;
8373 unresolved_reloc = FALSE;
8374 if (htab->plt_type == PLT_NEW
8375 || !htab->elf.dynamic_sections_created
8377 || h->dynindx == -1)
8378 relocation = (htab->glink->output_section->vma
8379 + htab->glink->output_offset
8380 + (ent->glink_offset & ~1));
8382 relocation = (htab->plt->output_section->vma
8383 + htab->plt->output_offset
8388 addend = rel->r_addend;
8391 if (r_type < R_PPC_max)
8392 howto = ppc_elf_howto_table[r_type];
8396 info->callbacks->einfo
8397 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8398 input_bfd, (int) r_type, sym_name);
8400 bfd_set_error (bfd_error_bad_value);
8408 case R_PPC_EMB_MRKREF:
8409 case R_PPC_GNU_VTINHERIT:
8410 case R_PPC_GNU_VTENTRY:
8413 /* GOT16 relocations. Like an ADDR16 using the symbol's
8414 address in the GOT as relocation value instead of the
8415 symbol's value itself. Also, create a GOT entry for the
8416 symbol and put the symbol value there. */
8417 case R_PPC_GOT_TLSGD16:
8418 case R_PPC_GOT_TLSGD16_LO:
8419 case R_PPC_GOT_TLSGD16_HI:
8420 case R_PPC_GOT_TLSGD16_HA:
8421 tls_type = TLS_TLS | TLS_GD;
8424 case R_PPC_GOT_TLSLD16:
8425 case R_PPC_GOT_TLSLD16_LO:
8426 case R_PPC_GOT_TLSLD16_HI:
8427 case R_PPC_GOT_TLSLD16_HA:
8428 tls_type = TLS_TLS | TLS_LD;
8431 case R_PPC_GOT_TPREL16:
8432 case R_PPC_GOT_TPREL16_LO:
8433 case R_PPC_GOT_TPREL16_HI:
8434 case R_PPC_GOT_TPREL16_HA:
8435 tls_type = TLS_TLS | TLS_TPREL;
8438 case R_PPC_GOT_DTPREL16:
8439 case R_PPC_GOT_DTPREL16_LO:
8440 case R_PPC_GOT_DTPREL16_HI:
8441 case R_PPC_GOT_DTPREL16_HA:
8442 tls_type = TLS_TLS | TLS_DTPREL;
8446 case R_PPC_GOT16_LO:
8447 case R_PPC_GOT16_HI:
8448 case R_PPC_GOT16_HA:
8452 /* Relocation is to the entry for this symbol in the global
8458 if (htab->got == NULL)
8462 if (tls_type == (TLS_TLS | TLS_LD)
8464 || !h->def_dynamic))
8465 offp = &htab->tlsld_got.offset;
8469 dyn = htab->elf.dynamic_sections_created;
8470 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8471 || (bfd_link_pic (info)
8472 && SYMBOL_REFERENCES_LOCAL (info, h)))
8473 /* This is actually a static link, or it is a
8474 -Bsymbolic link and the symbol is defined
8475 locally, or the symbol was forced to be local
8476 because of a version file. */
8480 BFD_ASSERT (h->dynindx != -1);
8482 unresolved_reloc = FALSE;
8484 offp = &h->got.offset;
8488 if (local_got_offsets == NULL)
8490 offp = &local_got_offsets[r_symndx];
8493 /* The offset must always be a multiple of 4. We use the
8494 least significant bit to record whether we have already
8495 processed this entry. */
8501 unsigned int tls_m = (tls_mask
8502 & (TLS_LD | TLS_GD | TLS_DTPREL
8503 | TLS_TPREL | TLS_TPRELGD));
8505 if (offp == &htab->tlsld_got.offset)
8511 /* We might have multiple got entries for this sym.
8512 Initialize them all. */
8517 if ((tls_m & TLS_LD) != 0)
8519 tls_ty = TLS_TLS | TLS_LD;
8522 else if ((tls_m & TLS_GD) != 0)
8524 tls_ty = TLS_TLS | TLS_GD;
8527 else if ((tls_m & TLS_DTPREL) != 0)
8529 tls_ty = TLS_TLS | TLS_DTPREL;
8530 tls_m &= ~TLS_DTPREL;
8532 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8534 tls_ty = TLS_TLS | TLS_TPREL;
8538 /* Generate relocs for the dynamic linker. */
8539 if ((bfd_link_pic (info) || indx != 0)
8540 && (offp == &htab->tlsld_got.offset
8542 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8543 || h->root.type != bfd_link_hash_undefweak))
8545 asection *rsec = htab->relgot;
8549 rsec = htab->reliplt;
8550 outrel.r_offset = (htab->got->output_section->vma
8551 + htab->got->output_offset
8553 outrel.r_addend = 0;
8554 if (tls_ty & (TLS_LD | TLS_GD))
8556 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8557 if (tls_ty == (TLS_TLS | TLS_GD))
8559 loc = rsec->contents;
8560 loc += (rsec->reloc_count++
8561 * sizeof (Elf32_External_Rela));
8562 bfd_elf32_swap_reloca_out (output_bfd,
8564 outrel.r_offset += 4;
8566 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8569 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8570 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8571 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8572 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8574 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8575 else if (ifunc != NULL)
8576 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8578 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8579 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8581 outrel.r_addend += relocation;
8582 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8584 if (htab->elf.tls_sec == NULL)
8585 outrel.r_addend = 0;
8587 outrel.r_addend -= htab->elf.tls_sec->vma;
8590 loc = rsec->contents;
8591 loc += (rsec->reloc_count++
8592 * sizeof (Elf32_External_Rela));
8593 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8596 /* Init the .got section contents if we're not
8597 emitting a reloc. */
8600 bfd_vma value = relocation;
8602 if (tls_ty == (TLS_TLS | TLS_LD))
8604 else if (tls_ty != 0)
8606 if (htab->elf.tls_sec == NULL)
8610 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8611 if (tls_ty == (TLS_TLS | TLS_TPREL))
8612 value += DTP_OFFSET - TP_OFFSET;
8615 if (tls_ty == (TLS_TLS | TLS_GD))
8617 bfd_put_32 (output_bfd, value,
8618 htab->got->contents + off + 4);
8622 bfd_put_32 (output_bfd, value,
8623 htab->got->contents + off);
8627 if (tls_ty & (TLS_LD | TLS_GD))
8636 if (off >= (bfd_vma) -2)
8639 if ((tls_type & TLS_TLS) != 0)
8641 if (tls_type != (TLS_TLS | TLS_LD))
8643 if ((tls_mask & TLS_LD) != 0
8645 || !h->def_dynamic))
8647 if (tls_type != (TLS_TLS | TLS_GD))
8649 if ((tls_mask & TLS_GD) != 0)
8651 if (tls_type != (TLS_TLS | TLS_DTPREL))
8653 if ((tls_mask & TLS_DTPREL) != 0)
8660 /* If here for a picfixup, we're done. */
8661 if (r_type != ELF32_R_TYPE (rel->r_info))
8664 relocation = (htab->got->output_section->vma
8665 + htab->got->output_offset
8667 - SYM_VAL (htab->elf.hgot));
8669 /* Addends on got relocations don't make much sense.
8670 x+off@got is actually x@got+off, and since the got is
8671 generated by a hash table traversal, the value in the
8672 got at entry m+n bears little relation to the entry m. */
8674 info->callbacks->einfo
8675 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8676 input_bfd, input_section, rel->r_offset,
8682 /* Relocations that need no special processing. */
8683 case R_PPC_LOCAL24PC:
8684 /* It makes no sense to point a local relocation
8685 at a symbol not in this object. */
8686 if (unresolved_reloc)
8688 (*info->callbacks->undefined_symbol) (info,
8689 h->root.root.string,
8696 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8698 /* @local on an ifunc does not really make sense since
8699 the ifunc resolver can take you anywhere. More
8700 seriously, calls to ifuncs must go through a plt call
8701 stub, and for pic the plt call stubs uses r30 to
8702 access the PLT. The problem is that a call that is
8703 local won't have the +32k reloc addend trick marking
8704 -fPIC code, so the linker won't know whether r30 is
8705 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8706 info->callbacks->einfo (_("%X%P: %H: @local call to ifunc %s\n"),
8707 input_bfd, input_section, rel->r_offset,
8708 h->root.root.string);
8712 case R_PPC_DTPREL16:
8713 case R_PPC_DTPREL16_LO:
8714 case R_PPC_DTPREL16_HI:
8715 case R_PPC_DTPREL16_HA:
8716 if (htab->elf.tls_sec != NULL)
8717 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8720 /* Relocations that may need to be propagated if this is a shared
8723 case R_PPC_TPREL16_LO:
8724 case R_PPC_TPREL16_HI:
8725 case R_PPC_TPREL16_HA:
8727 && h->root.type == bfd_link_hash_undefweak
8728 && h->dynindx == -1)
8730 /* Make this relocation against an undefined weak symbol
8731 resolve to zero. This is really just a tweak, since
8732 code using weak externs ought to check that they are
8733 defined before using them. */
8734 bfd_byte *p = contents + rel->r_offset - d_offset;
8735 unsigned int insn = bfd_get_32 (output_bfd, p);
8736 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8738 bfd_put_32 (output_bfd, insn, p);
8741 if (htab->elf.tls_sec != NULL)
8742 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8743 /* The TPREL16 relocs shouldn't really be used in shared
8744 libs as they will result in DT_TEXTREL being set, but
8745 support them anyway. */
8749 if (htab->elf.tls_sec != NULL)
8750 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8753 case R_PPC_DTPREL32:
8754 if (htab->elf.tls_sec != NULL)
8755 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8758 case R_PPC_DTPMOD32:
8764 case R_PPC_REL16_LO:
8765 case R_PPC_REL16_HI:
8766 case R_PPC_REL16_HA:
8767 case R_PPC_REL16DX_HA:
8771 if (h == NULL || h == htab->elf.hgot)
8777 case R_PPC_ADDR16_LO:
8778 case R_PPC_ADDR16_HI:
8779 case R_PPC_ADDR16_HA:
8784 case R_PPC_VLE_REL8:
8785 case R_PPC_VLE_REL15:
8786 case R_PPC_VLE_REL24:
8789 case R_PPC_REL14_BRTAKEN:
8790 case R_PPC_REL14_BRNTAKEN:
8791 /* If these relocations are not to a named symbol, they can be
8792 handled right here, no need to bother the dynamic linker. */
8793 if (SYMBOL_CALLS_LOCAL (info, h)
8794 || h == htab->elf.hgot)
8800 case R_PPC_ADDR14_BRTAKEN:
8801 case R_PPC_ADDR14_BRNTAKEN:
8802 if (h != NULL && !bfd_link_pic (info))
8807 if ((input_section->flags & SEC_ALLOC) == 0
8811 if ((bfd_link_pic (info)
8813 && ((h->root.type == bfd_link_hash_undefined
8814 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8815 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8816 || (h->root.type == bfd_link_hash_undefweak
8817 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8818 && (must_be_dyn_reloc (info, r_type)
8819 || !SYMBOL_CALLS_LOCAL (info, h)))
8820 || (ELIMINATE_COPY_RELOCS
8821 && !bfd_link_pic (info)
8826 && !(h->protected_def
8827 && ppc_elf_hash_entry (h)->has_addr16_ha
8828 && ppc_elf_hash_entry (h)->has_addr16_lo
8829 && htab->params->pic_fixup > 0)))
8835 fprintf (stderr, "ppc_elf_relocate_section needs to "
8836 "create relocation for %s\n",
8837 (h && h->root.root.string
8838 ? h->root.root.string : "<unknown>"));
8841 /* When generating a shared object, these relocations
8842 are copied into the output file to be resolved at run
8844 sreloc = elf_section_data (input_section)->sreloc;
8846 sreloc = htab->reliplt;
8851 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8854 if (outrel.r_offset == (bfd_vma) -1
8855 || outrel.r_offset == (bfd_vma) -2)
8856 skip = (int) outrel.r_offset;
8857 outrel.r_offset += (input_section->output_section->vma
8858 + input_section->output_offset);
8861 memset (&outrel, 0, sizeof outrel);
8863 && (h->root.type == bfd_link_hash_undefined
8864 || h->root.type == bfd_link_hash_undefweak))
8865 || !SYMBOL_REFERENCES_LOCAL (info, h))
8867 BFD_ASSERT (h->dynindx != -1);
8868 unresolved_reloc = FALSE;
8869 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8870 outrel.r_addend = rel->r_addend;
8874 outrel.r_addend = relocation + rel->r_addend;
8876 if (r_type != R_PPC_ADDR32)
8882 /* If we get here when building a static
8883 executable, then the libc startup function
8884 responsible for applying indirect function
8885 relocations is going to complain about
8887 If we get here when building a dynamic
8888 executable, it will be because we have
8889 a text relocation. The dynamic loader
8890 will set the text segment writable and
8891 non-executable to apply text relocations.
8892 So we'll segfault when trying to run the
8893 indirection function to resolve the reloc. */
8894 info->callbacks->einfo
8895 (_("%P: %H: relocation %s for indirect "
8896 "function %s unsupported\n"),
8897 input_bfd, input_section, rel->r_offset,
8902 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8904 else if (sec == NULL || sec->owner == NULL)
8906 bfd_set_error (bfd_error_bad_value);
8913 /* We are turning this relocation into one
8914 against a section symbol. It would be
8915 proper to subtract the symbol's value,
8916 osec->vma, from the emitted reloc addend,
8917 but ld.so expects buggy relocs.
8918 FIXME: Why not always use a zero index? */
8919 osec = sec->output_section;
8920 indx = elf_section_data (osec)->dynindx;
8923 osec = htab->elf.text_index_section;
8924 indx = elf_section_data (osec)->dynindx;
8926 BFD_ASSERT (indx != 0);
8929 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8930 indx, osec->name, osec->flags,
8931 h->root.root.string);
8935 outrel.r_info = ELF32_R_INFO (indx, r_type);
8937 else if (ifunc != NULL)
8938 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8940 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8943 loc = sreloc->contents;
8944 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8945 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8950 /* This reloc will be computed at runtime. We clear the memory
8951 so that it contains predictable value. */
8953 && ((input_section->flags & SEC_ALLOC) != 0
8954 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8956 relocation = howto->pc_relative ? outrel.r_offset : 0;
8963 case R_PPC_RELAX_PLT:
8964 case R_PPC_RELAX_PLTREL24:
8967 struct plt_entry *ent;
8968 bfd_vma got2_addend = 0;
8970 if (r_type == R_PPC_RELAX_PLTREL24)
8972 if (bfd_link_pic (info))
8973 got2_addend = addend;
8976 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8977 if (htab->plt_type == PLT_NEW)
8978 relocation = (htab->glink->output_section->vma
8979 + htab->glink->output_offset
8980 + ent->glink_offset);
8982 relocation = (htab->plt->output_section->vma
8983 + htab->plt->output_offset
8992 size_t insn_offset = rel->r_offset;
8995 if (bfd_link_pic (info))
8997 relocation -= (input_section->output_section->vma
8998 + input_section->output_offset
8999 + rel->r_offset - 4);
9000 stub = shared_stub_entry;
9001 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
9002 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
9003 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
9005 size = ARRAY_SIZE (shared_stub_entry) - 3;
9010 size = ARRAY_SIZE (stub_entry);
9013 relocation += addend;
9014 if (bfd_link_relocatable (info))
9017 /* First insn is HA, second is LO. */
9019 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9020 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9024 insn |= relocation & 0xffff;
9025 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9033 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9037 /* Rewrite the reloc and convert one of the trailing nop
9038 relocs to describe this relocation. */
9039 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9040 /* The relocs are at the bottom 2 bytes */
9041 wrel->r_offset = rel->r_offset + d_offset;
9042 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9043 wrel->r_addend = rel->r_addend;
9044 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9046 wrel->r_offset += 4;
9047 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9051 /* Indirect .sdata relocation. */
9052 case R_PPC_EMB_SDAI16:
9053 BFD_ASSERT (htab->sdata[0].section != NULL);
9054 if (!is_static_defined (htab->sdata[0].sym))
9056 unresolved_reloc = TRUE;
9060 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9061 h, relocation, rel);
9065 /* Indirect .sdata2 relocation. */
9066 case R_PPC_EMB_SDA2I16:
9067 BFD_ASSERT (htab->sdata[1].section != NULL);
9068 if (!is_static_defined (htab->sdata[1].sym))
9070 unresolved_reloc = TRUE;
9074 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9075 h, relocation, rel);
9079 /* Handle the TOC16 reloc. We want to use the offset within the .got
9080 section, not the actual VMA. This is appropriate when generating
9081 an embedded ELF object, for which the .got section acts like the
9082 AIX .toc section. */
9083 case R_PPC_TOC16: /* phony GOT16 relocations */
9084 if (sec == NULL || sec->output_section == NULL)
9086 unresolved_reloc = TRUE;
9089 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9091 || strcmp (bfd_get_section_name (sec->owner, sec),
9094 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9097 case R_PPC_PLTREL24:
9098 if (h != NULL && ifunc == NULL)
9100 struct plt_entry *ent;
9102 ent = find_plt_ent (&h->plt.plist, got2,
9103 bfd_link_pic (info) ? addend : 0);
9105 || htab->plt == NULL)
9107 /* We didn't make a PLT entry for this symbol. This
9108 happens when statically linking PIC code, or when
9109 using -Bsymbolic. */
9113 /* Relocation is to the entry for this symbol in the
9114 procedure linkage table. */
9115 unresolved_reloc = FALSE;
9116 if (htab->plt_type == PLT_NEW)
9117 relocation = (htab->glink->output_section->vma
9118 + htab->glink->output_offset
9119 + ent->glink_offset);
9121 relocation = (htab->plt->output_section->vma
9122 + htab->plt->output_offset
9127 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9128 addend specifies the GOT pointer offset within .got2.
9129 Don't apply it to the relocation field. */
9133 /* Relocate against _SDA_BASE_. */
9134 case R_PPC_SDAREL16:
9137 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9140 || sec->output_section == NULL
9141 || !is_static_defined (sda))
9143 unresolved_reloc = TRUE;
9146 addend -= SYM_VAL (sda);
9148 name = bfd_get_section_name (output_bfd, sec->output_section);
9149 if (!(strcmp (name, ".sdata") == 0
9150 || strcmp (name, ".sbss") == 0))
9152 info->callbacks->einfo
9153 (_("%P: %B: the target (%s) of a %s relocation is "
9154 "in the wrong output section (%s)\n"),
9163 /* Relocate against _SDA2_BASE_. */
9164 case R_PPC_EMB_SDA2REL:
9167 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9170 || sec->output_section == NULL
9171 || !is_static_defined (sda))
9173 unresolved_reloc = TRUE;
9176 addend -= SYM_VAL (sda);
9178 name = bfd_get_section_name (output_bfd, sec->output_section);
9179 if (!(strcmp (name, ".sdata2") == 0
9180 || strcmp (name, ".sbss2") == 0))
9182 info->callbacks->einfo
9183 (_("%P: %B: the target (%s) of a %s relocation is "
9184 "in the wrong output section (%s)\n"),
9193 case R_PPC_VLE_LO16A:
9194 relocation = relocation + addend;
9195 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9196 relocation, split16a_type);
9199 case R_PPC_VLE_LO16D:
9200 relocation = relocation + addend;
9201 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9202 relocation, split16d_type);
9205 case R_PPC_VLE_HI16A:
9206 relocation = (relocation + addend) >> 16;
9207 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9208 relocation, split16a_type);
9211 case R_PPC_VLE_HI16D:
9212 relocation = (relocation + addend) >> 16;
9213 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9214 relocation, split16d_type);
9217 case R_PPC_VLE_HA16A:
9218 relocation = (relocation + addend + 0x8000) >> 16;
9219 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9220 relocation, split16a_type);
9223 case R_PPC_VLE_HA16D:
9224 relocation = (relocation + addend + 0x8000) >> 16;
9225 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9226 relocation, split16d_type);
9229 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9230 case R_PPC_EMB_SDA21:
9231 case R_PPC_VLE_SDA21:
9232 case R_PPC_EMB_RELSDA:
9233 case R_PPC_VLE_SDA21_LO:
9238 struct elf_link_hash_entry *sda = NULL;
9240 if (sec == NULL || sec->output_section == NULL)
9242 unresolved_reloc = TRUE;
9246 name = bfd_get_section_name (output_bfd, sec->output_section);
9247 if (strcmp (name, ".sdata") == 0
9248 || strcmp (name, ".sbss") == 0)
9251 sda = htab->sdata[0].sym;
9253 else if (strcmp (name, ".sdata2") == 0
9254 || strcmp (name, ".sbss2") == 0)
9257 sda = htab->sdata[1].sym;
9259 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9260 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9266 info->callbacks->einfo
9267 (_("%P: %B: the target (%s) of a %s relocation is "
9268 "in the wrong output section (%s)\n"),
9274 bfd_set_error (bfd_error_bad_value);
9281 if (!is_static_defined (sda))
9283 unresolved_reloc = TRUE;
9286 addend -= SYM_VAL (sda);
9289 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9291 && (r_type == R_PPC_VLE_SDA21
9292 || r_type == R_PPC_VLE_SDA21_LO))
9294 relocation = relocation + addend;
9297 /* Force e_li insn, keeping RT from original insn. */
9301 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9302 /* Top 4 bits of value to 17..20. */
9303 insn |= (relocation & 0xf0000) >> 5;
9304 /* Next 5 bits of the value to 11..15. */
9305 insn |= (relocation & 0xf800) << 5;
9306 /* And the final 11 bits of the value to bits 21 to 31. */
9307 insn |= relocation & 0x7ff;
9309 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9311 if (r_type == R_PPC_VLE_SDA21
9312 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9316 else if (r_type == R_PPC_EMB_SDA21
9317 || r_type == R_PPC_VLE_SDA21
9318 || r_type == R_PPC_VLE_SDA21_LO)
9320 /* Fill in register field. */
9321 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9323 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9327 case R_PPC_VLE_SDAREL_LO16A:
9328 case R_PPC_VLE_SDAREL_LO16D:
9329 case R_PPC_VLE_SDAREL_HI16A:
9330 case R_PPC_VLE_SDAREL_HI16D:
9331 case R_PPC_VLE_SDAREL_HA16A:
9332 case R_PPC_VLE_SDAREL_HA16D:
9337 struct elf_link_hash_entry *sda = NULL;
9339 if (sec == NULL || sec->output_section == NULL)
9341 unresolved_reloc = TRUE;
9345 name = bfd_get_section_name (output_bfd, sec->output_section);
9346 if (strcmp (name, ".sdata") == 0
9347 || strcmp (name, ".sbss") == 0)
9350 sda = htab->sdata[0].sym;
9352 else if (strcmp (name, ".sdata2") == 0
9353 || strcmp (name, ".sbss2") == 0)
9356 sda = htab->sdata[1].sym;
9361 (_("%B: the target (%s) of a %s relocation is "
9362 "in the wrong output section (%s)"),
9368 bfd_set_error (bfd_error_bad_value);
9375 if (!is_static_defined (sda))
9377 unresolved_reloc = TRUE;
9382 value = (sda->root.u.def.section->output_section->vma
9383 + sda->root.u.def.section->output_offset
9386 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9387 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9388 value, split16a_type);
9389 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9390 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9391 value, split16d_type);
9392 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9394 value = value >> 16;
9395 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9396 value, split16a_type);
9398 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9400 value = value >> 16;
9401 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9402 value, split16d_type);
9404 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9406 value = (value + 0x8000) >> 16;
9407 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9408 value, split16a_type);
9410 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9412 value = (value + 0x8000) >> 16;
9413 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9414 value, split16d_type);
9419 /* Relocate against the beginning of the section. */
9421 case R_PPC_SECTOFF_LO:
9422 case R_PPC_SECTOFF_HI:
9423 case R_PPC_SECTOFF_HA:
9424 if (sec == NULL || sec->output_section == NULL)
9426 unresolved_reloc = TRUE;
9429 addend -= sec->output_section->vma;
9432 /* Negative relocations. */
9433 case R_PPC_EMB_NADDR32:
9434 case R_PPC_EMB_NADDR16:
9435 case R_PPC_EMB_NADDR16_LO:
9436 case R_PPC_EMB_NADDR16_HI:
9437 case R_PPC_EMB_NADDR16_HA:
9438 addend -= 2 * relocation;
9442 case R_PPC_GLOB_DAT:
9443 case R_PPC_JMP_SLOT:
9444 case R_PPC_RELATIVE:
9445 case R_PPC_IRELATIVE:
9447 case R_PPC_PLTREL32:
9448 case R_PPC_PLT16_LO:
9449 case R_PPC_PLT16_HI:
9450 case R_PPC_PLT16_HA:
9452 case R_PPC_EMB_RELSEC16:
9453 case R_PPC_EMB_RELST_LO:
9454 case R_PPC_EMB_RELST_HI:
9455 case R_PPC_EMB_RELST_HA:
9456 case R_PPC_EMB_BIT_FLD:
9457 info->callbacks->einfo
9458 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9463 bfd_set_error (bfd_error_invalid_operation);
9468 /* Do any further special processing. */
9474 case R_PPC_ADDR16_HA:
9475 case R_PPC_REL16_HA:
9476 case R_PPC_REL16DX_HA:
9477 case R_PPC_SECTOFF_HA:
9478 case R_PPC_TPREL16_HA:
9479 case R_PPC_DTPREL16_HA:
9480 case R_PPC_EMB_NADDR16_HA:
9481 case R_PPC_EMB_RELST_HA:
9482 /* It's just possible that this symbol is a weak symbol
9483 that's not actually defined anywhere. In that case,
9484 'sec' would be NULL, and we should leave the symbol
9485 alone (it will be set to zero elsewhere in the link). */
9490 case R_PPC_PLT16_HA:
9491 case R_PPC_GOT16_HA:
9492 case R_PPC_GOT_TLSGD16_HA:
9493 case R_PPC_GOT_TLSLD16_HA:
9494 case R_PPC_GOT_TPREL16_HA:
9495 case R_PPC_GOT_DTPREL16_HA:
9496 /* Add 0x10000 if sign bit in 0:15 is set.
9497 Bits 0:15 are not used. */
9502 case R_PPC_ADDR16_LO:
9504 case R_PPC_GOT16_LO:
9505 case R_PPC_SDAREL16:
9507 case R_PPC_SECTOFF_LO:
9508 case R_PPC_DTPREL16:
9509 case R_PPC_DTPREL16_LO:
9511 case R_PPC_TPREL16_LO:
9512 case R_PPC_GOT_TLSGD16:
9513 case R_PPC_GOT_TLSGD16_LO:
9514 case R_PPC_GOT_TLSLD16:
9515 case R_PPC_GOT_TLSLD16_LO:
9516 case R_PPC_GOT_DTPREL16:
9517 case R_PPC_GOT_DTPREL16_LO:
9518 case R_PPC_GOT_TPREL16:
9519 case R_PPC_GOT_TPREL16_LO:
9521 /* The 32-bit ABI lacks proper relocations to deal with
9522 certain 64-bit instructions. Prevent damage to bits
9523 that make up part of the insn opcode. */
9524 unsigned int insn, mask, lobit;
9526 insn = bfd_get_32 (output_bfd,
9527 contents + rel->r_offset - d_offset);
9529 if (is_insn_ds_form (insn))
9531 else if (is_insn_dq_form (insn))
9535 relocation += addend;
9536 addend = insn & mask;
9537 lobit = mask & relocation;
9540 relocation ^= lobit;
9541 info->callbacks->einfo
9542 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9543 input_bfd, input_section, rel->r_offset,
9544 howto->name, sym_name, mask + 1);
9545 bfd_set_error (bfd_error_bad_value);
9553 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9554 "offset = %ld, addend = %ld\n",
9559 (long) rel->r_offset,
9563 if (unresolved_reloc
9564 && !((input_section->flags & SEC_DEBUGGING) != 0
9566 && _bfd_elf_section_offset (output_bfd, info, input_section,
9567 rel->r_offset) != (bfd_vma) -1)
9569 info->callbacks->einfo
9570 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9571 input_bfd, input_section, rel->r_offset,
9577 /* 16-bit fields in insns mostly have signed values, but a
9578 few insns have 16-bit unsigned values. Really, we should
9579 have different reloc types. */
9580 if (howto->complain_on_overflow != complain_overflow_dont
9581 && howto->dst_mask == 0xffff
9582 && (input_section->flags & SEC_CODE) != 0)
9584 enum complain_overflow complain = complain_overflow_signed;
9586 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9590 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9591 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9592 complain = complain_overflow_bitfield;
9593 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9594 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9595 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9596 complain = complain_overflow_unsigned;
9598 if (howto->complain_on_overflow != complain)
9601 alt_howto.complain_on_overflow = complain;
9606 if (r_type == R_PPC_REL16DX_HA)
9608 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9609 if (rel->r_offset + 4 > input_section->size)
9610 r = bfd_reloc_outofrange;
9615 relocation += addend;
9616 relocation -= (rel->r_offset
9617 + input_section->output_offset
9618 + input_section->output_section->vma);
9620 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9622 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9623 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9628 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9629 rel->r_offset, relocation, addend);
9631 if (r != bfd_reloc_ok)
9633 if (r == bfd_reloc_overflow)
9636 /* On code like "if (foo) foo();" don't report overflow
9637 on a branch to zero when foo is undefined. */
9640 && (h->root.type == bfd_link_hash_undefweak
9641 || h->root.type == bfd_link_hash_undefined)
9642 && is_branch_reloc (r_type)))
9643 info->callbacks->reloc_overflow
9644 (info, (h ? &h->root : NULL), sym_name, howto->name,
9645 rel->r_addend, input_bfd, input_section, rel->r_offset);
9649 info->callbacks->einfo
9650 (_("%P: %H: %s reloc against `%s': error %d\n"),
9651 input_bfd, input_section, rel->r_offset,
9652 howto->name, sym_name, (int) r);
9663 Elf_Internal_Shdr *rel_hdr;
9664 size_t deleted = rel - wrel;
9666 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9667 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9668 if (rel_hdr->sh_size == 0)
9670 /* It is too late to remove an empty reloc section. Leave
9672 ??? What is wrong with an empty section??? */
9673 rel_hdr->sh_size = rel_hdr->sh_entsize;
9678 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9679 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9680 input_section->reloc_count -= deleted;
9684 fprintf (stderr, "\n");
9687 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9688 && input_section->size != input_section->rawsize
9689 && (strcmp (input_section->output_section->name, ".init") == 0
9690 || strcmp (input_section->output_section->name, ".fini") == 0))
9692 /* Branch around the trampolines. */
9693 unsigned int insn = B + input_section->size - input_section->rawsize;
9694 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9697 if (htab->params->ppc476_workaround
9698 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9699 && (!bfd_link_relocatable (info)
9700 || (input_section->output_section->alignment_power
9701 >= htab->params->pagesize_p2)))
9703 bfd_vma start_addr, end_addr, addr;
9704 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9706 if (relax_info->workaround_size != 0)
9712 bfd_put_32 (input_bfd, BA, fill);
9713 p = contents + input_section->size - relax_info->workaround_size;
9714 n = relax_info->workaround_size >> 2;
9717 memcpy (p, fill, 4);
9722 /* The idea is: Replace the last instruction on a page with a
9723 branch to a patch area. Put the insn there followed by a
9724 branch back to the next page. Complicated a little by
9725 needing to handle moved conditional branches, and by not
9726 wanting to touch data-in-text. */
9728 start_addr = (input_section->output_section->vma
9729 + input_section->output_offset);
9730 end_addr = (start_addr + input_section->size
9731 - relax_info->workaround_size);
9732 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9736 bfd_vma offset = addr - start_addr;
9737 Elf_Internal_Rela *lo, *hi;
9738 bfd_boolean is_data;
9739 bfd_vma patch_off, patch_addr;
9742 /* Do we have a data reloc at this offset? If so, leave
9750 rel = lo + (hi - lo) / 2;
9751 if (rel->r_offset < offset)
9753 else if (rel->r_offset > offset + 3)
9757 switch (ELF32_R_TYPE (rel->r_info))
9774 /* Some instructions can be left alone too. Unconditional
9775 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9776 avoid the icache failure.
9778 The problem occurs due to prefetch across a page boundary
9779 where stale instructions can be fetched from the next
9780 page, and the mechanism for flushing these bad
9781 instructions fails under certain circumstances. The
9782 unconditional branches:
9783 1) Branch: b, bl, ba, bla,
9784 2) Branch Conditional: bc, bca, bcl, bcla,
9785 3) Branch Conditional to Link Register: bclr, bclrl,
9786 where (2) and (3) have BO=0x14 making them unconditional,
9787 prevent the bad prefetch because the prefetch itself is
9788 affected by these instructions. This happens even if the
9789 instruction is not executed.
9794 . addi 9,9,new_page@l
9801 The bctr is not predicted taken due to ctr not being
9802 ready, so prefetch continues on past the bctr into the
9803 new page which might have stale instructions. If they
9804 fail to be flushed, then they will be executed after the
9805 bctr executes. Either of the following modifications
9806 prevent the bad prefetch from happening in the first
9809 . lis 9,new_page@ha lis 9,new_page@ha
9810 . addi 9,9,new_page@l addi 9,9,new_page@l
9813 . nop b somewhere_else
9814 . b somewhere_else nop
9815 . new_page: new_page:
9817 insn = bfd_get_32 (input_bfd, contents + offset);
9818 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9819 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9820 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9821 || ((insn & (0x3f << 26)) == (19u << 26)
9822 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9823 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9826 patch_addr = (start_addr + input_section->size
9827 - relax_info->workaround_size);
9828 patch_addr = (patch_addr + 15) & -16;
9829 patch_off = patch_addr - start_addr;
9830 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9833 && rel->r_offset >= offset
9834 && rel->r_offset < offset + 4)
9838 /* If the insn we are patching had a reloc, adjust the
9839 reloc r_offset so that the reloc applies to the moved
9840 location. This matters for -r and --emit-relocs. */
9841 if (rel + 1 != relend)
9843 Elf_Internal_Rela tmp = *rel;
9845 /* Keep the relocs sorted by r_offset. */
9846 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9849 relend[-1].r_offset += patch_off - offset;
9851 /* Adjust REL16 addends too. */
9852 switch (ELF32_R_TYPE (relend[-1].r_info))
9855 case R_PPC_REL16_LO:
9856 case R_PPC_REL16_HI:
9857 case R_PPC_REL16_HA:
9858 relend[-1].r_addend += patch_off - offset;
9864 /* If we are building a PIE or shared library with
9865 non-PIC objects, perhaps we had a dynamic reloc too?
9866 If so, the dynamic reloc must move with the insn. */
9867 sreloc = elf_section_data (input_section)->sreloc;
9870 Elf32_External_Rela *slo, *shi, *srelend;
9873 slo = (Elf32_External_Rela *) sreloc->contents;
9874 shi = srelend = slo + sreloc->reloc_count;
9875 soffset = (offset + input_section->output_section->vma
9876 + input_section->output_offset);
9879 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9880 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9882 if (outrel.r_offset < soffset)
9884 else if (outrel.r_offset > soffset + 3)
9888 if (srel + 1 != srelend)
9890 memmove (srel, srel + 1,
9891 (srelend - (srel + 1)) * sizeof (*srel));
9894 outrel.r_offset += patch_off - offset;
9895 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9905 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9906 && (insn & 2) == 0 /* relative */)
9908 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9910 delta += offset - patch_off;
9911 if (bfd_link_relocatable (info) && rel != NULL)
9913 if (!bfd_link_relocatable (info) && rel != NULL)
9915 enum elf_ppc_reloc_type r_type;
9917 r_type = ELF32_R_TYPE (relend[-1].r_info);
9918 if (r_type == R_PPC_REL14_BRTAKEN)
9919 insn |= BRANCH_PREDICT_BIT;
9920 else if (r_type == R_PPC_REL14_BRNTAKEN)
9921 insn &= ~BRANCH_PREDICT_BIT;
9923 BFD_ASSERT (r_type == R_PPC_REL14);
9925 if ((r_type == R_PPC_REL14_BRTAKEN
9926 || r_type == R_PPC_REL14_BRNTAKEN)
9927 && delta + 0x8000 < 0x10000
9928 && (bfd_signed_vma) delta < 0)
9929 insn ^= BRANCH_PREDICT_BIT;
9931 if (delta + 0x8000 < 0x10000)
9933 bfd_put_32 (input_bfd,
9934 (insn & ~0xfffc) | (delta & 0xfffc),
9935 contents + patch_off);
9937 bfd_put_32 (input_bfd,
9938 B | ((offset + 4 - patch_off) & 0x3fffffc),
9939 contents + patch_off);
9946 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9948 relend[-1].r_offset += 8;
9949 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9951 bfd_put_32 (input_bfd,
9952 (insn & ~0xfffc) | 8,
9953 contents + patch_off);
9955 bfd_put_32 (input_bfd,
9956 B | ((offset + 4 - patch_off) & 0x3fffffc),
9957 contents + patch_off);
9959 bfd_put_32 (input_bfd,
9960 B | ((delta - 8) & 0x3fffffc),
9961 contents + patch_off);
9967 bfd_put_32 (input_bfd, insn, contents + patch_off);
9969 bfd_put_32 (input_bfd,
9970 B | ((offset + 4 - patch_off) & 0x3fffffc),
9971 contents + patch_off);
9974 BFD_ASSERT (patch_off <= input_section->size);
9975 relax_info->workaround_size = input_section->size - patch_off;
9982 /* Finish up dynamic symbol handling. We set the contents of various
9983 dynamic sections here. */
9986 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9987 struct bfd_link_info *info,
9988 struct elf_link_hash_entry *h,
9989 Elf_Internal_Sym *sym)
9991 struct ppc_elf_link_hash_table *htab;
9992 struct plt_entry *ent;
9993 bfd_boolean doneone;
9996 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9997 h->root.root.string);
10000 htab = ppc_elf_hash_table (info);
10001 BFD_ASSERT (htab->elf.dynobj != NULL);
10004 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10005 if (ent->plt.offset != (bfd_vma) -1)
10009 Elf_Internal_Rela rela;
10011 bfd_vma reloc_index;
10013 if (htab->plt_type == PLT_NEW
10014 || !htab->elf.dynamic_sections_created
10015 || h->dynindx == -1)
10016 reloc_index = ent->plt.offset / 4;
10019 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10020 / htab->plt_slot_size);
10021 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10022 && htab->plt_type == PLT_OLD)
10023 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10026 /* This symbol has an entry in the procedure linkage table.
10028 if (htab->plt_type == PLT_VXWORKS
10029 && htab->elf.dynamic_sections_created
10030 && h->dynindx != -1)
10032 bfd_vma got_offset;
10033 const bfd_vma *plt_entry;
10035 /* The first three entries in .got.plt are reserved. */
10036 got_offset = (reloc_index + 3) * 4;
10038 /* Use the right PLT. */
10039 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10040 : ppc_elf_vxworks_plt_entry;
10042 /* Fill in the .plt on VxWorks. */
10043 if (bfd_link_pic (info))
10045 bfd_put_32 (output_bfd,
10046 plt_entry[0] | PPC_HA (got_offset),
10047 htab->plt->contents + ent->plt.offset + 0);
10048 bfd_put_32 (output_bfd,
10049 plt_entry[1] | PPC_LO (got_offset),
10050 htab->plt->contents + ent->plt.offset + 4);
10054 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10056 bfd_put_32 (output_bfd,
10057 plt_entry[0] | PPC_HA (got_loc),
10058 htab->plt->contents + ent->plt.offset + 0);
10059 bfd_put_32 (output_bfd,
10060 plt_entry[1] | PPC_LO (got_loc),
10061 htab->plt->contents + ent->plt.offset + 4);
10064 bfd_put_32 (output_bfd, plt_entry[2],
10065 htab->plt->contents + ent->plt.offset + 8);
10066 bfd_put_32 (output_bfd, plt_entry[3],
10067 htab->plt->contents + ent->plt.offset + 12);
10069 /* This instruction is an immediate load. The value loaded is
10070 the byte offset of the R_PPC_JMP_SLOT relocation from the
10071 start of the .rela.plt section. The value is stored in the
10072 low-order 16 bits of the load instruction. */
10073 /* NOTE: It appears that this is now an index rather than a
10074 prescaled offset. */
10075 bfd_put_32 (output_bfd,
10076 plt_entry[4] | reloc_index,
10077 htab->plt->contents + ent->plt.offset + 16);
10078 /* This instruction is a PC-relative branch whose target is
10079 the start of the PLT section. The address of this branch
10080 instruction is 20 bytes beyond the start of this PLT entry.
10081 The address is encoded in bits 6-29, inclusive. The value
10082 stored is right-shifted by two bits, permitting a 26-bit
10084 bfd_put_32 (output_bfd,
10086 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10087 htab->plt->contents + ent->plt.offset + 20);
10088 bfd_put_32 (output_bfd, plt_entry[6],
10089 htab->plt->contents + ent->plt.offset + 24);
10090 bfd_put_32 (output_bfd, plt_entry[7],
10091 htab->plt->contents + ent->plt.offset + 28);
10093 /* Fill in the GOT entry corresponding to this PLT slot with
10094 the address immediately after the "bctr" instruction
10095 in this PLT entry. */
10096 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
10097 + htab->plt->output_offset
10098 + ent->plt.offset + 16),
10099 htab->sgotplt->contents + got_offset);
10101 if (!bfd_link_pic (info))
10103 /* Fill in a couple of entries in .rela.plt.unloaded. */
10104 loc = htab->srelplt2->contents
10105 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10106 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10107 * sizeof (Elf32_External_Rela));
10109 /* Provide the @ha relocation for the first instruction. */
10110 rela.r_offset = (htab->plt->output_section->vma
10111 + htab->plt->output_offset
10112 + ent->plt.offset + 2);
10113 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10115 rela.r_addend = got_offset;
10116 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10117 loc += sizeof (Elf32_External_Rela);
10119 /* Provide the @l relocation for the second instruction. */
10120 rela.r_offset = (htab->plt->output_section->vma
10121 + htab->plt->output_offset
10122 + ent->plt.offset + 6);
10123 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10125 rela.r_addend = got_offset;
10126 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10127 loc += sizeof (Elf32_External_Rela);
10129 /* Provide a relocation for the GOT entry corresponding to this
10130 PLT slot. Point it at the middle of the .plt entry. */
10131 rela.r_offset = (htab->sgotplt->output_section->vma
10132 + htab->sgotplt->output_offset
10134 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10136 rela.r_addend = ent->plt.offset + 16;
10137 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10140 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10141 In particular, the offset for the relocation is not the
10142 address of the PLT entry for this function, as specified
10143 by the ABI. Instead, the offset is set to the address of
10144 the GOT slot for this function. See EABI 4.4.4.1. */
10145 rela.r_offset = (htab->sgotplt->output_section->vma
10146 + htab->sgotplt->output_offset
10152 asection *splt = htab->plt;
10153 if (!htab->elf.dynamic_sections_created
10154 || h->dynindx == -1)
10157 rela.r_offset = (splt->output_section->vma
10158 + splt->output_offset
10159 + ent->plt.offset);
10160 if (htab->plt_type == PLT_OLD
10161 || !htab->elf.dynamic_sections_created
10162 || h->dynindx == -1)
10164 /* We don't need to fill in the .plt. The ppc dynamic
10165 linker will fill it in. */
10169 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10170 + htab->glink->output_section->vma
10171 + htab->glink->output_offset);
10172 bfd_put_32 (output_bfd, val,
10173 splt->contents + ent->plt.offset);
10177 /* Fill in the entry in the .rela.plt section. */
10179 if (!htab->elf.dynamic_sections_created
10180 || h->dynindx == -1)
10182 BFD_ASSERT (h->type == STT_GNU_IFUNC
10184 && (h->root.type == bfd_link_hash_defined
10185 || h->root.type == bfd_link_hash_defweak));
10186 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10187 rela.r_addend = SYM_VAL (h);
10190 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10192 if (!htab->elf.dynamic_sections_created
10193 || h->dynindx == -1)
10194 loc = (htab->reliplt->contents
10195 + (htab->reliplt->reloc_count++
10196 * sizeof (Elf32_External_Rela)));
10198 loc = (htab->relplt->contents
10199 + reloc_index * sizeof (Elf32_External_Rela));
10200 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10202 if (!h->def_regular)
10204 /* Mark the symbol as undefined, rather than as
10205 defined in the .plt section. Leave the value if
10206 there were any relocations where pointer equality
10207 matters (this is a clue for the dynamic linker, to
10208 make function pointer comparisons work between an
10209 application and shared library), otherwise set it
10211 sym->st_shndx = SHN_UNDEF;
10212 if (!h->pointer_equality_needed)
10214 else if (!h->ref_regular_nonweak)
10216 /* This breaks function pointer comparisons, but
10217 that is better than breaking tests for a NULL
10218 function pointer. */
10222 else if (h->type == STT_GNU_IFUNC
10223 && !bfd_link_pic (info))
10225 /* Set the value of ifunc symbols in a non-pie
10226 executable to the glink entry. This is to avoid
10227 text relocations. We can't do this for ifunc in
10228 allocate_dynrelocs, as we do for normal dynamic
10229 function symbols with plt entries, because we need
10230 to keep the original value around for the ifunc
10232 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10233 (output_bfd, htab->glink->output_section));
10234 sym->st_value = (ent->glink_offset
10235 + htab->glink->output_offset
10236 + htab->glink->output_section->vma);
10241 if (htab->plt_type == PLT_NEW
10242 || !htab->elf.dynamic_sections_created
10243 || h->dynindx == -1)
10246 asection *splt = htab->plt;
10247 if (!htab->elf.dynamic_sections_created
10248 || h->dynindx == -1)
10251 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10253 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10255 bfd_put_32 (output_bfd, LWZ_11_3, p);
10257 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10259 bfd_put_32 (output_bfd, MR_0_3, p);
10261 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10263 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10265 bfd_put_32 (output_bfd, BEQLR, p);
10267 bfd_put_32 (output_bfd, MR_3_0, p);
10269 bfd_put_32 (output_bfd, NOP, p);
10273 write_glink_stub (ent, splt, p, info);
10275 if (!bfd_link_pic (info))
10276 /* We only need one non-PIC glink stub. */
10286 Elf_Internal_Rela rela;
10289 /* This symbols needs a copy reloc. Set it up. */
10292 fprintf (stderr, ", copy");
10295 BFD_ASSERT (h->dynindx != -1);
10297 if (ppc_elf_hash_entry (h)->has_sda_refs)
10301 BFD_ASSERT (s != NULL);
10303 rela.r_offset = SYM_VAL (h);
10304 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10306 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10307 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10311 fprintf (stderr, "\n");
10317 static enum elf_reloc_type_class
10318 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10319 const asection *rel_sec,
10320 const Elf_Internal_Rela *rela)
10322 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10324 if (rel_sec == htab->reliplt)
10325 return reloc_class_ifunc;
10327 switch (ELF32_R_TYPE (rela->r_info))
10329 case R_PPC_RELATIVE:
10330 return reloc_class_relative;
10331 case R_PPC_JMP_SLOT:
10332 return reloc_class_plt;
10334 return reloc_class_copy;
10336 return reloc_class_normal;
10340 /* Finish up the dynamic sections. */
10343 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10344 struct bfd_link_info *info)
10348 struct ppc_elf_link_hash_table *htab;
10351 bfd_boolean ret = TRUE;
10354 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10357 htab = ppc_elf_hash_table (info);
10358 dynobj = elf_hash_table (info)->dynobj;
10359 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10360 if (htab->is_vxworks)
10361 splt = bfd_get_linker_section (dynobj, ".plt");
10366 if (htab->elf.hgot != NULL)
10367 got = SYM_VAL (htab->elf.hgot);
10369 if (htab->elf.dynamic_sections_created)
10371 Elf32_External_Dyn *dyncon, *dynconend;
10373 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
10375 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10376 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10377 for (; dyncon < dynconend; dyncon++)
10379 Elf_Internal_Dyn dyn;
10382 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10387 if (htab->is_vxworks)
10391 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10395 dyn.d_un.d_val = htab->relplt->size;
10400 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10404 dyn.d_un.d_ptr = got;
10408 if (htab->is_vxworks)
10411 dyn.d_un.d_ptr -= htab->relplt->size;
10417 if (htab->is_vxworks
10418 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10423 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10427 if (htab->got != NULL)
10429 if (htab->elf.hgot->root.u.def.section == htab->got
10430 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
10432 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10434 p += htab->elf.hgot->root.u.def.value;
10435 if (htab->plt_type == PLT_OLD)
10437 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10438 so that a function can easily find the address of
10439 _GLOBAL_OFFSET_TABLE_. */
10440 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10441 < htab->elf.hgot->root.u.def.section->size);
10442 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10447 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10448 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10449 < htab->elf.hgot->root.u.def.section->size);
10450 bfd_put_32 (output_bfd, val, p);
10455 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10456 htab->elf.hgot->root.root.string,
10457 (htab->sgotplt != NULL
10458 ? htab->sgotplt->name : htab->got->name));
10459 bfd_set_error (bfd_error_bad_value);
10463 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10466 /* Fill in the first entry in the VxWorks procedure linkage table. */
10467 if (splt && splt->size > 0)
10469 /* Use the right PLT. */
10470 const bfd_vma *plt_entry = (bfd_link_pic (info)
10471 ? ppc_elf_vxworks_pic_plt0_entry
10472 : ppc_elf_vxworks_plt0_entry);
10474 if (!bfd_link_pic (info))
10476 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10478 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10479 splt->contents + 0);
10480 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10481 splt->contents + 4);
10485 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10486 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10488 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10489 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10490 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10491 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10492 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10493 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10495 if (! bfd_link_pic (info))
10497 Elf_Internal_Rela rela;
10500 loc = htab->srelplt2->contents;
10502 /* Output the @ha relocation for the first instruction. */
10503 rela.r_offset = (htab->plt->output_section->vma
10504 + htab->plt->output_offset
10506 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10508 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10509 loc += sizeof (Elf32_External_Rela);
10511 /* Output the @l relocation for the second instruction. */
10512 rela.r_offset = (htab->plt->output_section->vma
10513 + htab->plt->output_offset
10515 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10517 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10518 loc += sizeof (Elf32_External_Rela);
10520 /* Fix up the remaining relocations. They may have the wrong
10521 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10522 in which symbols were output. */
10523 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10525 Elf_Internal_Rela rel;
10527 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10528 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10529 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10530 loc += sizeof (Elf32_External_Rela);
10532 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10533 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10534 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10535 loc += sizeof (Elf32_External_Rela);
10537 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10538 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10539 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10540 loc += sizeof (Elf32_External_Rela);
10545 if (htab->glink != NULL
10546 && htab->glink->contents != NULL
10547 && htab->elf.dynamic_sections_created)
10550 unsigned char *endp;
10555 * PIC glink code is the following:
10557 * # ith PLT code stub.
10558 * addis 11,30,(plt+(i-1)*4-got)@ha
10559 * lwz 11,(plt+(i-1)*4-got)@l(11)
10563 * # A table of branches, one for each plt entry.
10564 * # The idea is that the plt call stub loads ctr and r11 with these
10565 * # addresses, so (r11 - res_0) gives the plt index * 4.
10566 * res_0: b PLTresolve
10567 * res_1: b PLTresolve
10569 * # Some number of entries towards the end can be nops
10575 * addis 11,11,(1f-res_0)@ha
10578 * 1: addi 11,11,(1b-res_0)@l
10581 * sub 11,11,12 # r11 = index * 4
10582 * addis 12,12,(got+4-1b)@ha
10583 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10584 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10587 * add 11,0,11 # r11 = index * 12 = reloc offset.
10590 static const unsigned int pic_plt_resolve[] =
10611 * Non-PIC glink code is a little simpler.
10613 * # ith PLT code stub.
10614 * lis 11,(plt+(i-1)*4)@ha
10615 * lwz 11,(plt+(i-1)*4)@l(11)
10619 * The branch table is the same, then comes
10622 * lis 12,(got+4)@ha
10623 * addis 11,11,(-res_0)@ha
10624 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10625 * addi 11,11,(-res_0)@l # r11 = index * 4
10628 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10629 * add 11,0,11 # r11 = index * 12 = reloc offset.
10632 static const unsigned int plt_resolve[] =
10652 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10654 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10657 /* Build the branch table, one for each plt entry (less one),
10658 and perhaps some padding. */
10659 p = htab->glink->contents;
10660 p += htab->glink_pltresolve;
10661 endp = htab->glink->contents;
10662 endp += htab->glink->size - GLINK_PLTRESOLVE;
10663 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10665 bfd_put_32 (output_bfd, B + endp - p, p);
10670 bfd_put_32 (output_bfd, NOP, p);
10674 res0 = (htab->glink_pltresolve
10675 + htab->glink->output_section->vma
10676 + htab->glink->output_offset);
10678 if (htab->params->ppc476_workaround)
10680 /* Ensure that a call stub at the end of a page doesn't
10681 result in prefetch over the end of the page into the
10682 glink branch table. */
10683 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10685 bfd_vma glink_start = (htab->glink->output_section->vma
10686 + htab->glink->output_offset);
10688 for (page_addr = res0 & -pagesize;
10689 page_addr > glink_start;
10690 page_addr -= pagesize)
10692 /* We have a plt call stub that may need fixing. */
10696 loc = htab->glink->contents + page_addr - 4 - glink_start;
10697 insn = bfd_get_32 (output_bfd, loc);
10700 /* By alignment, we know that there must be at least
10701 one other call stub before this one. */
10702 insn = bfd_get_32 (output_bfd, loc - 16);
10704 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10706 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10711 /* Last comes the PLTresolve stub. */
10712 if (bfd_link_pic (info))
10716 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10718 unsigned int insn = pic_plt_resolve[i];
10720 if (htab->params->ppc476_workaround && insn == NOP)
10722 bfd_put_32 (output_bfd, insn, p);
10725 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10727 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10728 + htab->glink->output_section->vma
10729 + htab->glink->output_offset);
10731 bfd_put_32 (output_bfd,
10732 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10733 bfd_put_32 (output_bfd,
10734 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10735 bfd_put_32 (output_bfd,
10736 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10737 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10739 bfd_put_32 (output_bfd,
10740 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10741 bfd_put_32 (output_bfd,
10742 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10746 bfd_put_32 (output_bfd,
10747 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10748 bfd_put_32 (output_bfd,
10749 LWZ_12_12 + 4, p + 9*4);
10754 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10756 unsigned int insn = plt_resolve[i];
10758 if (htab->params->ppc476_workaround && insn == NOP)
10760 bfd_put_32 (output_bfd, insn, p);
10763 p -= 4 * ARRAY_SIZE (plt_resolve);
10765 bfd_put_32 (output_bfd,
10766 LIS_12 + PPC_HA (got + 4), p + 0*4);
10767 bfd_put_32 (output_bfd,
10768 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10769 bfd_put_32 (output_bfd,
10770 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10771 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10773 bfd_put_32 (output_bfd,
10774 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10775 bfd_put_32 (output_bfd,
10776 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10780 bfd_put_32 (output_bfd,
10781 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10782 bfd_put_32 (output_bfd,
10783 LWZ_12_12 + 4, p + 6*4);
10788 if (htab->glink_eh_frame != NULL
10789 && htab->glink_eh_frame->contents != NULL)
10791 unsigned char *p = htab->glink_eh_frame->contents;
10794 p += sizeof (glink_eh_frame_cie);
10799 /* Offset to .glink. */
10800 val = (htab->glink->output_section->vma
10801 + htab->glink->output_offset);
10802 val -= (htab->glink_eh_frame->output_section->vma
10803 + htab->glink_eh_frame->output_offset);
10804 val -= p - htab->glink_eh_frame->contents;
10805 bfd_put_32 (htab->elf.dynobj, val, p);
10807 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10808 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10809 htab->glink_eh_frame,
10810 htab->glink_eh_frame->contents))
10817 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10818 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10819 #define TARGET_BIG_SYM powerpc_elf32_vec
10820 #define TARGET_BIG_NAME "elf32-powerpc"
10821 #define ELF_ARCH bfd_arch_powerpc
10822 #define ELF_TARGET_ID PPC32_ELF_DATA
10823 #define ELF_MACHINE_CODE EM_PPC
10824 #ifdef __QNXTARGET__
10825 #define ELF_MAXPAGESIZE 0x1000
10826 #define ELF_COMMONPAGESIZE 0x1000
10828 #define ELF_MAXPAGESIZE 0x10000
10829 #define ELF_COMMONPAGESIZE 0x10000
10831 #define ELF_MINPAGESIZE 0x1000
10832 #define elf_info_to_howto ppc_elf_info_to_howto
10834 #ifdef EM_CYGNUS_POWERPC
10835 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10839 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10842 #define elf_backend_plt_not_loaded 1
10843 #define elf_backend_can_gc_sections 1
10844 #define elf_backend_can_refcount 1
10845 #define elf_backend_rela_normal 1
10846 #define elf_backend_caches_rawsize 1
10848 #define bfd_elf32_mkobject ppc_elf_mkobject
10849 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10850 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10851 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10852 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10853 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10854 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10855 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10857 #define elf_backend_object_p ppc_elf_object_p
10858 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10859 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10860 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10861 #define elf_backend_relocate_section ppc_elf_relocate_section
10862 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10863 #define elf_backend_check_relocs ppc_elf_check_relocs
10864 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10865 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10866 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10867 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10868 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10869 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10870 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10871 #define elf_backend_fake_sections ppc_elf_fake_sections
10872 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10873 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10874 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10875 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10876 #define elf_backend_write_core_note ppc_elf_write_core_note
10877 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10878 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10879 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10880 #define elf_backend_write_section ppc_elf_write_section
10881 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10882 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10883 #define elf_backend_action_discarded ppc_elf_action_discarded
10884 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10885 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10887 #include "elf32-target.h"
10889 /* FreeBSD Target */
10891 #undef TARGET_LITTLE_SYM
10892 #undef TARGET_LITTLE_NAME
10894 #undef TARGET_BIG_SYM
10895 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10896 #undef TARGET_BIG_NAME
10897 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10900 #define ELF_OSABI ELFOSABI_FREEBSD
10903 #define elf32_bed elf32_powerpc_fbsd_bed
10905 #include "elf32-target.h"
10907 /* VxWorks Target */
10909 #undef TARGET_LITTLE_SYM
10910 #undef TARGET_LITTLE_NAME
10912 #undef TARGET_BIG_SYM
10913 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10914 #undef TARGET_BIG_NAME
10915 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10919 /* VxWorks uses the elf default section flags for .plt. */
10920 static const struct bfd_elf_special_section *
10921 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10923 if (sec->name == NULL)
10926 if (strcmp (sec->name, ".plt") == 0)
10927 return _bfd_elf_get_sec_type_attr (abfd, sec);
10929 return ppc_elf_get_sec_type_attr (abfd, sec);
10932 /* Like ppc_elf_link_hash_table_create, but overrides
10933 appropriately for VxWorks. */
10934 static struct bfd_link_hash_table *
10935 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10937 struct bfd_link_hash_table *ret;
10939 ret = ppc_elf_link_hash_table_create (abfd);
10942 struct ppc_elf_link_hash_table *htab
10943 = (struct ppc_elf_link_hash_table *)ret;
10944 htab->is_vxworks = 1;
10945 htab->plt_type = PLT_VXWORKS;
10946 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10947 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10948 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10953 /* Tweak magic VxWorks symbols as they are loaded. */
10955 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10956 struct bfd_link_info *info,
10957 Elf_Internal_Sym *sym,
10958 const char **namep ATTRIBUTE_UNUSED,
10959 flagword *flagsp ATTRIBUTE_UNUSED,
10963 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10967 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10971 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10973 ppc_elf_final_write_processing(abfd, linker);
10974 elf_vxworks_final_write_processing(abfd, linker);
10977 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10979 #undef elf_backend_want_plt_sym
10980 #define elf_backend_want_plt_sym 1
10981 #undef elf_backend_want_got_plt
10982 #define elf_backend_want_got_plt 1
10983 #undef elf_backend_got_symbol_offset
10984 #define elf_backend_got_symbol_offset 0
10985 #undef elf_backend_plt_not_loaded
10986 #define elf_backend_plt_not_loaded 0
10987 #undef elf_backend_plt_readonly
10988 #define elf_backend_plt_readonly 1
10989 #undef elf_backend_got_header_size
10990 #define elf_backend_got_header_size 12
10992 #undef bfd_elf32_get_synthetic_symtab
10994 #undef bfd_elf32_bfd_link_hash_table_create
10995 #define bfd_elf32_bfd_link_hash_table_create \
10996 ppc_elf_vxworks_link_hash_table_create
10997 #undef elf_backend_add_symbol_hook
10998 #define elf_backend_add_symbol_hook \
10999 ppc_elf_vxworks_add_symbol_hook
11000 #undef elf_backend_link_output_symbol_hook
11001 #define elf_backend_link_output_symbol_hook \
11002 elf_vxworks_link_output_symbol_hook
11003 #undef elf_backend_final_write_processing
11004 #define elf_backend_final_write_processing \
11005 ppc_elf_vxworks_final_write_processing
11006 #undef elf_backend_get_sec_type_attr
11007 #define elf_backend_get_sec_type_attr \
11008 ppc_elf_vxworks_get_sec_type_attr
11009 #undef elf_backend_emit_relocs
11010 #define elf_backend_emit_relocs \
11011 elf_vxworks_emit_relocs
11014 #define elf32_bed ppc_elf_vxworks_bed
11015 #undef elf_backend_post_process_headers
11017 #include "elf32-target.h"
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