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;
2250 case PPC_APUINFO_VLE:
2251 mach = bfd_mach_ppc_vle;
2262 if (mach != 0 && mach != -1ul)
2264 const bfd_arch_info_type *arch;
2266 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2267 if (arch->mach == mach)
2269 abfd->arch_info = arch;
2276 /* Fix bad default arch selected for a 32 bit input bfd when the
2277 default is 64 bit. Also select arch based on apuinfo. */
2280 ppc_elf_object_p (bfd *abfd)
2282 if (!abfd->arch_info->the_default)
2285 if (abfd->arch_info->bits_per_word == 64)
2287 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2289 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2291 /* Relies on arch after 64 bit default being 32 bit default. */
2292 abfd->arch_info = abfd->arch_info->next;
2293 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2296 return _bfd_elf_ppc_set_arch (abfd);
2299 /* Function to set whether a module needs the -mrelocatable bit set. */
2302 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2304 BFD_ASSERT (!elf_flags_init (abfd)
2305 || elf_elfheader (abfd)->e_flags == flags);
2307 elf_elfheader (abfd)->e_flags = flags;
2308 elf_flags_init (abfd) = TRUE;
2312 /* Support for core dump NOTE sections. */
2315 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2320 switch (note->descsz)
2325 case 268: /* Linux/PPC. */
2327 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2330 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2339 /* Make a ".reg/999" section. */
2340 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2341 size, note->descpos + offset);
2345 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2347 switch (note->descsz)
2352 case 128: /* Linux/PPC elf_prpsinfo. */
2353 elf_tdata (abfd)->core->pid
2354 = bfd_get_32 (abfd, note->descdata + 16);
2355 elf_tdata (abfd)->core->program
2356 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2357 elf_tdata (abfd)->core->command
2358 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2361 /* Note that for some reason, a spurious space is tacked
2362 onto the end of the args in some (at least one anyway)
2363 implementations, so strip it off if it exists. */
2366 char *command = elf_tdata (abfd)->core->command;
2367 int n = strlen (command);
2369 if (0 < n && command[n - 1] == ' ')
2370 command[n - 1] = '\0';
2377 elfcore_write_ppc_linux_prpsinfo32
2381 const struct elf_internal_linux_prpsinfo *prpsinfo)
2383 struct elf_external_ppc_linux_prpsinfo32 data;
2385 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2386 return elfcore_write_note (abfd, buf, bufsiz,
2387 "CORE", NT_PRPSINFO, &data, sizeof (data));
2391 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2403 va_start (ap, note_type);
2404 memset (data, 0, sizeof (data));
2405 strncpy (data + 32, va_arg (ap, const char *), 16);
2406 strncpy (data + 48, va_arg (ap, const char *), 80);
2408 return elfcore_write_note (abfd, buf, bufsiz,
2409 "CORE", note_type, data, sizeof (data));
2420 va_start (ap, note_type);
2421 memset (data, 0, 72);
2422 pid = va_arg (ap, long);
2423 bfd_put_32 (abfd, pid, data + 24);
2424 cursig = va_arg (ap, int);
2425 bfd_put_16 (abfd, cursig, data + 12);
2426 greg = va_arg (ap, const void *);
2427 memcpy (data + 72, greg, 192);
2428 memset (data + 264, 0, 4);
2430 return elfcore_write_note (abfd, buf, bufsiz,
2431 "CORE", note_type, data, sizeof (data));
2437 ppc_elf_lookup_section_flags (char *flag_name)
2440 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2446 /* Add the VLE flag if required. */
2449 ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2451 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2452 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2453 shdr->sh_flags |= SHF_PPC_VLE;
2458 /* Return address for Ith PLT stub in section PLT, for relocation REL
2459 or (bfd_vma) -1 if it should not be included. */
2462 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2463 const asection *plt ATTRIBUTE_UNUSED,
2466 return rel->address;
2469 /* Handle a PowerPC specific section when reading an object file. This
2470 is called when bfd_section_from_shdr finds a section with an unknown
2474 ppc_elf_section_from_shdr (bfd *abfd,
2475 Elf_Internal_Shdr *hdr,
2482 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2485 newsect = hdr->bfd_section;
2486 flags = bfd_get_section_flags (abfd, newsect);
2487 if (hdr->sh_flags & SHF_EXCLUDE)
2488 flags |= SEC_EXCLUDE;
2490 if (hdr->sh_type == SHT_ORDERED)
2491 flags |= SEC_SORT_ENTRIES;
2493 bfd_set_section_flags (abfd, newsect, flags);
2497 /* Set up any other section flags and such that may be necessary. */
2500 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2501 Elf_Internal_Shdr *shdr,
2504 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2505 shdr->sh_type = SHT_ORDERED;
2510 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2511 need to bump up the number of section headers. */
2514 ppc_elf_additional_program_headers (bfd *abfd,
2515 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2520 s = bfd_get_section_by_name (abfd, ".sbss2");
2521 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2524 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2525 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2531 /* Modify the segment map for VLE executables. */
2534 ppc_elf_modify_segment_map (bfd *abfd,
2535 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2537 struct elf_segment_map *m, *n;
2540 bfd_boolean sect0_vle, sectj_vle;
2542 /* At this point in the link, output sections have already been sorted by
2543 LMA and assigned to segments. All that is left to do is to ensure
2544 there is no mixing of VLE & non-VLE sections in a text segment.
2545 If we find that case, we split the segment.
2546 We maintain the original output section order. */
2548 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2553 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
2554 for (j = 1; j < m->count; ++j)
2556 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2558 if (sectj_vle != sect0_vle)
2564 /* sections 0..j-1 stay in this (current) segment,
2565 the remainder are put in a new segment.
2566 The scan resumes with the new segment. */
2568 /* Fix the new segment. */
2569 amt = sizeof (struct elf_segment_map);
2570 amt += (m->count - j - 1) * sizeof (asection *);
2571 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2575 n->p_type = PT_LOAD;
2576 n->p_flags = PF_X | PF_R;
2578 n->p_flags |= PF_PPC_VLE;
2579 n->count = m->count - j;
2580 for (k = 0; k < n->count; ++k)
2582 n->sections[k] = m->sections[j+k];
2583 m->sections[j+k] = NULL;
2588 /* Fix the current segment */
2595 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2596 .PPC.EMB.sbss0 a normal section, and not a bss section so
2597 that the linker doesn't crater when trying to make more than
2600 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2602 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2603 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2604 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2605 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2606 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2607 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2608 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2609 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2610 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2611 { NULL, 0, 0, 0, 0 }
2614 /* This is what we want for new plt/got. */
2615 static struct bfd_elf_special_section ppc_alt_plt =
2616 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2618 static const struct bfd_elf_special_section *
2619 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2621 const struct bfd_elf_special_section *ssect;
2623 /* See if this is one of the special sections. */
2624 if (sec->name == NULL)
2627 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2631 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2632 ssect = &ppc_alt_plt;
2636 return _bfd_elf_get_sec_type_attr (abfd, sec);
2639 /* Very simple linked list structure for recording apuinfo values. */
2640 typedef struct apuinfo_list
2642 struct apuinfo_list *next;
2643 unsigned long value;
2647 static apuinfo_list *head;
2648 static bfd_boolean apuinfo_set;
2651 apuinfo_list_init (void)
2654 apuinfo_set = FALSE;
2658 apuinfo_list_add (unsigned long value)
2660 apuinfo_list *entry = head;
2662 while (entry != NULL)
2664 if (entry->value == value)
2666 entry = entry->next;
2669 entry = bfd_malloc (sizeof (* entry));
2673 entry->value = value;
2679 apuinfo_list_length (void)
2681 apuinfo_list *entry;
2682 unsigned long count;
2684 for (entry = head, count = 0;
2686 entry = entry->next)
2692 static inline unsigned long
2693 apuinfo_list_element (unsigned long number)
2695 apuinfo_list * entry;
2699 entry = entry->next)
2702 return entry ? entry->value : 0;
2706 apuinfo_list_finish (void)
2708 apuinfo_list *entry;
2710 for (entry = head; entry;)
2712 apuinfo_list *next = entry->next;
2720 /* Scan the input BFDs and create a linked list of
2721 the APUinfo values that will need to be emitted. */
2724 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2728 char *buffer = NULL;
2729 bfd_size_type largest_input_size = 0;
2731 unsigned long length;
2732 const char *error_message = NULL;
2734 if (link_info == NULL)
2737 apuinfo_list_init ();
2739 /* Read in the input sections contents. */
2740 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2742 unsigned long datum;
2744 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2748 error_message = _("corrupt %s section in %B");
2749 length = asec->size;
2754 if (largest_input_size < asec->size)
2758 largest_input_size = asec->size;
2759 buffer = bfd_malloc (largest_input_size);
2764 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2765 || (bfd_bread (buffer, length, ibfd) != length))
2767 error_message = _("unable to read in %s section from %B");
2771 /* Verify the contents of the header. Note - we have to
2772 extract the values this way in order to allow for a
2773 host whose endian-ness is different from the target. */
2774 datum = bfd_get_32 (ibfd, buffer);
2775 if (datum != sizeof APUINFO_LABEL)
2778 datum = bfd_get_32 (ibfd, buffer + 8);
2782 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2785 /* Get the number of bytes used for apuinfo entries. */
2786 datum = bfd_get_32 (ibfd, buffer + 4);
2787 if (datum + 20 != length)
2790 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2791 for (i = 0; i < datum; i += 4)
2792 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2795 error_message = NULL;
2799 /* Compute the size of the output section. */
2800 unsigned num_entries = apuinfo_list_length ();
2802 /* Set the output section size, if it exists. */
2803 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2805 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2808 error_message = _("warning: unable to set size of %s section in %B");
2817 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2820 /* Prevent the output section from accumulating the input sections'
2821 contents. We have already stored this in our linked list structure. */
2824 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2825 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2827 bfd_byte *contents ATTRIBUTE_UNUSED)
2829 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2832 /* Finally we can generate the output section. */
2835 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2840 unsigned num_entries;
2841 bfd_size_type length;
2843 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2850 length = asec->size;
2854 buffer = bfd_malloc (length);
2857 (*_bfd_error_handler)
2858 (_("failed to allocate space for new APUinfo section."));
2862 /* Create the apuinfo header. */
2863 num_entries = apuinfo_list_length ();
2864 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2865 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2866 bfd_put_32 (abfd, 0x2, buffer + 8);
2867 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2870 for (i = 0; i < num_entries; i++)
2872 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2876 if (length != asec->size)
2877 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2879 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2880 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2884 apuinfo_list_finish ();
2888 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2890 bfd_byte buf[GLINK_ENTRY_SIZE];
2892 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2895 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2896 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2897 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2898 && bfd_get_32 (abfd, buf + 12) == BCTR);
2902 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2904 bfd_vma vma = *(bfd_vma *) ptr;
2905 return ((section->flags & SEC_ALLOC) != 0
2906 && section->vma <= vma
2907 && vma < section->vma + section->size);
2911 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2912 long dynsymcount, asymbol **dynsyms,
2915 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2916 asection *plt, *relplt, *dynamic, *glink;
2917 bfd_vma glink_vma = 0;
2918 bfd_vma resolv_vma = 0;
2929 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2932 if (dynsymcount <= 0)
2935 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2939 plt = bfd_get_section_by_name (abfd, ".plt");
2943 /* Call common code to handle old-style executable PLTs. */
2944 if (elf_section_flags (plt) & SHF_EXECINSTR)
2945 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2946 dynsymcount, dynsyms, ret);
2948 /* If this object was prelinked, the prelinker stored the address
2949 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2950 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2951 if (dynamic != NULL)
2953 bfd_byte *dynbuf, *extdyn, *extdynend;
2955 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2957 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2960 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2961 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2964 extdynend = extdyn + dynamic->size;
2965 for (; extdyn < extdynend; extdyn += extdynsize)
2967 Elf_Internal_Dyn dyn;
2968 (*swap_dyn_in) (abfd, extdyn, &dyn);
2970 if (dyn.d_tag == DT_NULL)
2973 if (dyn.d_tag == DT_PPC_GOT)
2975 unsigned int g_o_t = dyn.d_un.d_val;
2976 asection *got = bfd_get_section_by_name (abfd, ".got");
2978 && bfd_get_section_contents (abfd, got, buf,
2979 g_o_t - got->vma + 4, 4))
2980 glink_vma = bfd_get_32 (abfd, buf);
2987 /* Otherwise we read the first plt entry. */
2990 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2991 glink_vma = bfd_get_32 (abfd, buf);
2997 /* The .glink section usually does not survive the final
2998 link; search for the section (usually .text) where the
2999 glink stubs now reside. */
3000 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3004 /* Determine glink PLT resolver by reading the relative branch
3005 from the first glink stub. */
3006 if (bfd_get_section_contents (abfd, glink, buf,
3007 glink_vma - glink->vma, 4))
3009 unsigned int insn = bfd_get_32 (abfd, buf);
3011 /* The first glink stub may either branch to the resolver ... */
3013 if ((insn & ~0x3fffffc) == 0)
3014 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3016 /* ... or fall through a bunch of NOPs. */
3017 else if ((insn ^ B ^ NOP) == 0)
3019 bfd_get_section_contents (abfd, glink, buf,
3020 glink_vma - glink->vma + i, 4);
3022 if (bfd_get_32 (abfd, buf) != NOP)
3024 resolv_vma = glink_vma + i;
3029 count = relplt->size / sizeof (Elf32_External_Rela);
3030 /* If the stubs are those for -shared/-pie then we might have
3031 multiple stubs for each plt entry. If that is the case then
3032 there is no way to associate stubs with their plt entries short
3033 of figuring out the GOT pointer value used in the stub. */
3034 if (!is_nonpic_glink_stub (abfd, glink,
3035 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3038 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3039 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3042 size = count * sizeof (asymbol);
3043 p = relplt->relocation;
3044 for (i = 0; i < count; i++, p++)
3046 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3048 size += sizeof ("+0x") - 1 + 8;
3051 size += sizeof (asymbol) + sizeof ("__glink");
3054 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3056 s = *ret = bfd_malloc (size);
3060 stub_vma = glink_vma;
3061 names = (char *) (s + count + 1 + (resolv_vma != 0));
3062 p = relplt->relocation + count - 1;
3063 for (i = 0; i < count; i++)
3067 *s = **p->sym_ptr_ptr;
3068 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3069 we are defining a symbol, ensure one of them is set. */
3070 if ((s->flags & BSF_LOCAL) == 0)
3071 s->flags |= BSF_GLOBAL;
3072 s->flags |= BSF_SYNTHETIC;
3075 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3077 s->value = stub_vma - glink->vma;
3080 len = strlen ((*p->sym_ptr_ptr)->name);
3081 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3085 memcpy (names, "+0x", sizeof ("+0x") - 1);
3086 names += sizeof ("+0x") - 1;
3087 bfd_sprintf_vma (abfd, names, p->addend);
3088 names += strlen (names);
3090 memcpy (names, "@plt", sizeof ("@plt"));
3091 names += sizeof ("@plt");
3096 /* Add a symbol at the start of the glink branch table. */
3097 memset (s, 0, sizeof *s);
3099 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3101 s->value = glink_vma - glink->vma;
3103 memcpy (names, "__glink", sizeof ("__glink"));
3104 names += sizeof ("__glink");
3110 /* Add a symbol for the glink PLT resolver. */
3111 memset (s, 0, sizeof *s);
3113 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3115 s->value = resolv_vma - glink->vma;
3117 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3118 names += sizeof ("__glink_PLTresolve");
3126 /* The following functions are specific to the ELF linker, while
3127 functions above are used generally. They appear in this file more
3128 or less in the order in which they are called. eg.
3129 ppc_elf_check_relocs is called early in the link process,
3130 ppc_elf_finish_dynamic_sections is one of the last functions
3133 /* Track PLT entries needed for a given symbol. We might need more
3134 than one glink entry per symbol when generating a pic binary. */
3137 struct plt_entry *next;
3139 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3140 This field stores the offset into .got2 used to initialise the
3141 GOT pointer reg. It will always be at least 32768. (Current
3142 gcc always uses an offset of 32768, but ld -r will pack .got2
3143 sections together resulting in larger offsets). */
3146 /* The .got2 section. */
3149 /* PLT refcount or offset. */
3152 bfd_signed_vma refcount;
3156 /* .glink stub offset. */
3157 bfd_vma glink_offset;
3160 /* Of those relocs that might be copied as dynamic relocs, this function
3161 selects those that must be copied when linking a shared library,
3162 even when the symbol is local. */
3165 must_be_dyn_reloc (struct bfd_link_info *info,
3166 enum elf_ppc_reloc_type r_type)
3175 case R_PPC_REL14_BRTAKEN:
3176 case R_PPC_REL14_BRNTAKEN:
3182 case R_PPC_TPREL16_LO:
3183 case R_PPC_TPREL16_HI:
3184 case R_PPC_TPREL16_HA:
3185 return !bfd_link_executable (info);
3189 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3190 copying dynamic variables from a shared lib into an app's dynbss
3191 section, and instead use a dynamic relocation to point into the
3193 #define ELIMINATE_COPY_RELOCS 1
3195 /* Used to track dynamic relocations for local symbols. */
3196 struct ppc_dyn_relocs
3198 struct ppc_dyn_relocs *next;
3200 /* The input section of the reloc. */
3203 /* Total number of relocs copied for the input section. */
3204 unsigned int count : 31;
3206 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3207 unsigned int ifunc : 1;
3210 /* PPC ELF linker hash entry. */
3212 struct ppc_elf_link_hash_entry
3214 struct elf_link_hash_entry elf;
3216 /* If this symbol is used in the linker created sections, the processor
3217 specific backend uses this field to map the field into the offset
3218 from the beginning of the section. */
3219 elf_linker_section_pointers_t *linker_section_pointer;
3221 /* Track dynamic relocs copied for this symbol. */
3222 struct elf_dyn_relocs *dyn_relocs;
3224 /* Contexts in which symbol is used in the GOT (or TOC).
3225 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3226 corresponding relocs are encountered during check_relocs.
3227 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3228 indicate the corresponding GOT entry type is not needed. */
3229 #define TLS_GD 1 /* GD reloc. */
3230 #define TLS_LD 2 /* LD reloc. */
3231 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3232 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3233 #define TLS_TLS 16 /* Any TLS reloc. */
3234 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3235 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3238 /* Nonzero if we have seen a small data relocation referring to this
3240 unsigned char has_sda_refs : 1;
3242 /* Flag use of given relocations. */
3243 unsigned char has_addr16_ha : 1;
3244 unsigned char has_addr16_lo : 1;
3247 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3249 /* PPC ELF linker hash table. */
3251 struct ppc_elf_link_hash_table
3253 struct elf_link_hash_table elf;
3255 /* Various options passed from the linker. */
3256 struct ppc_elf_params *params;
3258 /* Short-cuts to get to dynamic linker sections. */
3270 elf_linker_section_t sdata[2];
3272 asection *glink_eh_frame;
3274 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3277 /* The .got.plt section (VxWorks only)*/
3280 /* Shortcut to __tls_get_addr. */
3281 struct elf_link_hash_entry *tls_get_addr;
3283 /* The bfd that forced an old-style PLT. */
3286 /* TLS local dynamic got entry handling. */
3288 bfd_signed_vma refcount;
3292 /* Offset of branch table to PltResolve function in glink. */
3293 bfd_vma glink_pltresolve;
3295 /* Size of reserved GOT entries. */
3296 unsigned int got_header_size;
3297 /* Non-zero if allocating the header left a gap. */
3298 unsigned int got_gap;
3300 /* The type of PLT we have chosen to use. */
3301 enum ppc_elf_plt_type plt_type;
3303 /* True if the target system is VxWorks. */
3304 unsigned int is_vxworks:1;
3306 /* The size of PLT entries. */
3308 /* The distance between adjacent PLT slots. */
3310 /* The size of the first PLT entry. */
3311 int plt_initial_entry_size;
3313 /* Small local sym cache. */
3314 struct sym_cache sym_cache;
3317 /* Rename some of the generic section flags to better document how they
3318 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3320 /* Nonzero if this section has TLS related relocations. */
3321 #define has_tls_reloc sec_flg0
3323 /* Nonzero if this section has a call to __tls_get_addr. */
3324 #define has_tls_get_addr_call sec_flg1
3326 /* Get the PPC ELF linker hash table from a link_info structure. */
3328 #define ppc_elf_hash_table(p) \
3329 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3330 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3332 /* Create an entry in a PPC ELF linker hash table. */
3334 static struct bfd_hash_entry *
3335 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3336 struct bfd_hash_table *table,
3339 /* Allocate the structure if it has not already been allocated by a
3343 entry = bfd_hash_allocate (table,
3344 sizeof (struct ppc_elf_link_hash_entry));
3349 /* Call the allocation method of the superclass. */
3350 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3353 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3354 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3355 ppc_elf_hash_entry (entry)->tls_mask = 0;
3356 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3362 /* Create a PPC ELF linker hash table. */
3364 static struct bfd_link_hash_table *
3365 ppc_elf_link_hash_table_create (bfd *abfd)
3367 struct ppc_elf_link_hash_table *ret;
3368 static struct ppc_elf_params default_params
3369 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0 };
3371 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3375 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3376 ppc_elf_link_hash_newfunc,
3377 sizeof (struct ppc_elf_link_hash_entry),
3384 ret->elf.init_plt_refcount.refcount = 0;
3385 ret->elf.init_plt_refcount.glist = NULL;
3386 ret->elf.init_plt_offset.offset = 0;
3387 ret->elf.init_plt_offset.glist = NULL;
3389 ret->params = &default_params;
3391 ret->sdata[0].name = ".sdata";
3392 ret->sdata[0].sym_name = "_SDA_BASE_";
3393 ret->sdata[0].bss_name = ".sbss";
3395 ret->sdata[1].name = ".sdata2";
3396 ret->sdata[1].sym_name = "_SDA2_BASE_";
3397 ret->sdata[1].bss_name = ".sbss2";
3399 ret->plt_entry_size = 12;
3400 ret->plt_slot_size = 8;
3401 ret->plt_initial_entry_size = 72;
3403 return &ret->elf.root;
3406 /* Hook linker params into hash table. */
3409 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3411 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3414 htab->params = params;
3415 params->pagesize_p2 = bfd_log2 (params->pagesize);
3418 /* Create .got and the related sections. */
3421 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3423 struct ppc_elf_link_hash_table *htab;
3427 if (!_bfd_elf_create_got_section (abfd, info))
3430 htab = ppc_elf_hash_table (info);
3431 htab->got = s = bfd_get_linker_section (abfd, ".got");
3435 if (htab->is_vxworks)
3437 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3443 /* The powerpc .got has a blrl instruction in it. Mark it
3445 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3446 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3447 if (!bfd_set_section_flags (abfd, s, flags))
3451 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3458 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3459 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3460 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3463 ppc_elf_create_linker_section (bfd *abfd,
3464 struct bfd_link_info *info,
3466 elf_linker_section_t *lsect)
3470 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3471 | SEC_LINKER_CREATED);
3473 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3478 /* Define the sym on the first section of this name. */
3479 s = bfd_get_section_by_name (abfd, lsect->name);
3481 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3482 if (lsect->sym == NULL)
3484 lsect->sym->root.u.def.value = 0x8000;
3489 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3491 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3495 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3496 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3497 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3500 || !bfd_set_section_alignment (abfd, s,
3501 htab->params->ppc476_workaround ? 6 : 4))
3504 if (!info->no_ld_generated_unwind_info)
3506 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3507 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3508 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3509 htab->glink_eh_frame = s;
3511 || !bfd_set_section_alignment (abfd, s, 2))
3515 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3516 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3519 || !bfd_set_section_alignment (abfd, s, 4))
3522 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3523 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3524 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3527 || ! bfd_set_section_alignment (abfd, s, 2))
3530 if (!ppc_elf_create_linker_section (abfd, info, 0,
3534 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3541 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3542 to output sections (just like _bfd_elf_create_dynamic_sections has
3543 to create .dynbss and .rela.bss). */
3546 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3548 struct ppc_elf_link_hash_table *htab;
3552 htab = ppc_elf_hash_table (info);
3554 if (htab->got == NULL
3555 && !ppc_elf_create_got (abfd, info))
3558 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3561 if (htab->glink == NULL
3562 && !ppc_elf_create_glink (abfd, info))
3565 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3566 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3567 SEC_ALLOC | SEC_LINKER_CREATED);
3572 if (! bfd_link_pic (info))
3574 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3575 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3576 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3577 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3580 || ! bfd_set_section_alignment (abfd, s, 2))
3584 if (htab->is_vxworks
3585 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3588 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3589 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3593 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3594 if (htab->plt_type == PLT_VXWORKS)
3595 /* The VxWorks PLT is a loaded section with contents. */
3596 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3597 return bfd_set_section_flags (abfd, s, flags);
3600 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3603 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3604 struct elf_link_hash_entry *dir,
3605 struct elf_link_hash_entry *ind)
3607 struct ppc_elf_link_hash_entry *edir, *eind;
3609 edir = (struct ppc_elf_link_hash_entry *) dir;
3610 eind = (struct ppc_elf_link_hash_entry *) ind;
3612 edir->tls_mask |= eind->tls_mask;
3613 edir->has_sda_refs |= eind->has_sda_refs;
3615 /* If called to transfer flags for a weakdef during processing
3616 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3617 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3618 if (!(ELIMINATE_COPY_RELOCS
3619 && eind->elf.root.type != bfd_link_hash_indirect
3620 && edir->elf.dynamic_adjusted))
3621 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3623 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3624 edir->elf.ref_regular |= eind->elf.ref_regular;
3625 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3626 edir->elf.needs_plt |= eind->elf.needs_plt;
3627 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3629 if (eind->dyn_relocs != NULL)
3631 if (edir->dyn_relocs != NULL)
3633 struct elf_dyn_relocs **pp;
3634 struct elf_dyn_relocs *p;
3636 /* Add reloc counts against the indirect sym to the direct sym
3637 list. Merge any entries against the same section. */
3638 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3640 struct elf_dyn_relocs *q;
3642 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3643 if (q->sec == p->sec)
3645 q->pc_count += p->pc_count;
3646 q->count += p->count;
3653 *pp = edir->dyn_relocs;
3656 edir->dyn_relocs = eind->dyn_relocs;
3657 eind->dyn_relocs = NULL;
3660 /* If we were called to copy over info for a weak sym, that's all.
3661 You might think dyn_relocs need not be copied over; After all,
3662 both syms will be dynamic or both non-dynamic so we're just
3663 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3664 code in ppc_elf_adjust_dynamic_symbol needs to check for
3665 dyn_relocs in read-only sections, and it does so on what is the
3667 if (eind->elf.root.type != bfd_link_hash_indirect)
3670 /* Copy over the GOT refcount entries that we may have already seen to
3671 the symbol which just became indirect. */
3672 edir->elf.got.refcount += eind->elf.got.refcount;
3673 eind->elf.got.refcount = 0;
3675 /* And plt entries. */
3676 if (eind->elf.plt.plist != NULL)
3678 if (edir->elf.plt.plist != NULL)
3680 struct plt_entry **entp;
3681 struct plt_entry *ent;
3683 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3685 struct plt_entry *dent;
3687 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3688 if (dent->sec == ent->sec && dent->addend == ent->addend)
3690 dent->plt.refcount += ent->plt.refcount;
3697 *entp = edir->elf.plt.plist;
3700 edir->elf.plt.plist = eind->elf.plt.plist;
3701 eind->elf.plt.plist = NULL;
3704 if (eind->elf.dynindx != -1)
3706 if (edir->elf.dynindx != -1)
3707 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3708 edir->elf.dynstr_index);
3709 edir->elf.dynindx = eind->elf.dynindx;
3710 edir->elf.dynstr_index = eind->elf.dynstr_index;
3711 eind->elf.dynindx = -1;
3712 eind->elf.dynstr_index = 0;
3716 /* Hook called by the linker routine which adds symbols from an object
3717 file. We use it to put .comm items in .sbss, and not .bss. */
3720 ppc_elf_add_symbol_hook (bfd *abfd,
3721 struct bfd_link_info *info,
3722 Elf_Internal_Sym *sym,
3723 const char **namep ATTRIBUTE_UNUSED,
3724 flagword *flagsp ATTRIBUTE_UNUSED,
3728 if (sym->st_shndx == SHN_COMMON
3729 && !bfd_link_relocatable (info)
3730 && is_ppc_elf (info->output_bfd)
3731 && sym->st_size <= elf_gp_size (abfd))
3733 /* Common symbols less than or equal to -G nn bytes are automatically
3735 struct ppc_elf_link_hash_table *htab;
3737 htab = ppc_elf_hash_table (info);
3738 if (htab->sbss == NULL)
3740 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3742 if (!htab->elf.dynobj)
3743 htab->elf.dynobj = abfd;
3745 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3748 if (htab->sbss == NULL)
3753 *valp = sym->st_size;
3756 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3757 && (abfd->flags & DYNAMIC) == 0
3758 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3759 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3764 /* Find a linker generated pointer with a given addend and type. */
3766 static elf_linker_section_pointers_t *
3767 elf_find_pointer_linker_section
3768 (elf_linker_section_pointers_t *linker_pointers,
3770 elf_linker_section_t *lsect)
3772 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3773 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3774 return linker_pointers;
3779 /* Allocate a pointer to live in a linker created section. */
3782 elf_allocate_pointer_linker_section (bfd *abfd,
3783 elf_linker_section_t *lsect,
3784 struct elf_link_hash_entry *h,
3785 const Elf_Internal_Rela *rel)
3787 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3788 elf_linker_section_pointers_t *linker_section_ptr;
3789 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3792 BFD_ASSERT (lsect != NULL);
3794 /* Is this a global symbol? */
3797 struct ppc_elf_link_hash_entry *eh;
3799 /* Has this symbol already been allocated? If so, our work is done. */
3800 eh = (struct ppc_elf_link_hash_entry *) h;
3801 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3806 ptr_linker_section_ptr = &eh->linker_section_pointer;
3810 BFD_ASSERT (is_ppc_elf (abfd));
3812 /* Allocation of a pointer to a local symbol. */
3813 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3815 /* Allocate a table to hold the local symbols if first time. */
3818 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3821 amt *= sizeof (elf_linker_section_pointers_t *);
3822 ptr = bfd_zalloc (abfd, amt);
3827 elf_local_ptr_offsets (abfd) = ptr;
3830 /* Has this symbol already been allocated? If so, our work is done. */
3831 if (elf_find_pointer_linker_section (ptr[r_symndx],
3836 ptr_linker_section_ptr = &ptr[r_symndx];
3839 /* Allocate space for a pointer in the linker section, and allocate
3840 a new pointer record from internal memory. */
3841 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3842 amt = sizeof (elf_linker_section_pointers_t);
3843 linker_section_ptr = bfd_alloc (abfd, amt);
3845 if (!linker_section_ptr)
3848 linker_section_ptr->next = *ptr_linker_section_ptr;
3849 linker_section_ptr->addend = rel->r_addend;
3850 linker_section_ptr->lsect = lsect;
3851 *ptr_linker_section_ptr = linker_section_ptr;
3853 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3855 linker_section_ptr->offset = lsect->section->size;
3856 lsect->section->size += 4;
3860 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3861 lsect->name, (long) linker_section_ptr->offset,
3862 (long) lsect->section->size);
3868 static struct plt_entry **
3869 update_local_sym_info (bfd *abfd,
3870 Elf_Internal_Shdr *symtab_hdr,
3871 unsigned long r_symndx,
3874 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3875 struct plt_entry **local_plt;
3876 char *local_got_tls_masks;
3878 if (local_got_refcounts == NULL)
3880 bfd_size_type size = symtab_hdr->sh_info;
3882 size *= (sizeof (*local_got_refcounts)
3883 + sizeof (*local_plt)
3884 + sizeof (*local_got_tls_masks));
3885 local_got_refcounts = bfd_zalloc (abfd, size);
3886 if (local_got_refcounts == NULL)
3888 elf_local_got_refcounts (abfd) = local_got_refcounts;
3891 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3892 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3893 local_got_tls_masks[r_symndx] |= tls_type;
3894 if (tls_type != PLT_IFUNC)
3895 local_got_refcounts[r_symndx] += 1;
3896 return local_plt + r_symndx;
3900 update_plt_info (bfd *abfd, struct plt_entry **plist,
3901 asection *sec, bfd_vma addend)
3903 struct plt_entry *ent;
3907 for (ent = *plist; ent != NULL; ent = ent->next)
3908 if (ent->sec == sec && ent->addend == addend)
3912 bfd_size_type amt = sizeof (*ent);
3913 ent = bfd_alloc (abfd, amt);
3918 ent->addend = addend;
3919 ent->plt.refcount = 0;
3922 ent->plt.refcount += 1;
3926 static struct plt_entry *
3927 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3929 struct plt_entry *ent;
3933 for (ent = *plist; ent != NULL; ent = ent->next)
3934 if (ent->sec == sec && ent->addend == addend)
3940 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3942 return (r_type == R_PPC_PLTREL24
3943 || r_type == R_PPC_LOCAL24PC
3944 || r_type == R_PPC_REL24
3945 || r_type == R_PPC_REL14
3946 || r_type == R_PPC_REL14_BRTAKEN
3947 || r_type == R_PPC_REL14_BRNTAKEN
3948 || r_type == R_PPC_ADDR24
3949 || r_type == R_PPC_ADDR14
3950 || r_type == R_PPC_ADDR14_BRTAKEN
3951 || r_type == R_PPC_ADDR14_BRNTAKEN
3952 || r_type == R_PPC_VLE_REL24);
3956 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3958 (*_bfd_error_handler)
3959 (_("%B: relocation %s cannot be used when making a shared object"),
3961 ppc_elf_howto_table[r_type]->name);
3962 bfd_set_error (bfd_error_bad_value);
3965 /* Look through the relocs for a section during the first phase, and
3966 allocate space in the global offset table or procedure linkage
3970 ppc_elf_check_relocs (bfd *abfd,
3971 struct bfd_link_info *info,
3973 const Elf_Internal_Rela *relocs)
3975 struct ppc_elf_link_hash_table *htab;
3976 Elf_Internal_Shdr *symtab_hdr;
3977 struct elf_link_hash_entry **sym_hashes;
3978 const Elf_Internal_Rela *rel;
3979 const Elf_Internal_Rela *rel_end;
3980 asection *got2, *sreloc;
3981 struct elf_link_hash_entry *tga;
3983 if (bfd_link_relocatable (info))
3986 /* Don't do anything special with non-loaded, non-alloced sections.
3987 In particular, any relocs in such sections should not affect GOT
3988 and PLT reference counting (ie. we don't allow them to create GOT
3989 or PLT entries), there's no possibility or desire to optimize TLS
3990 relocs, and there's not much point in propagating relocs to shared
3991 libs that the dynamic linker won't relocate. */
3992 if ((sec->flags & SEC_ALLOC) == 0)
3996 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4000 BFD_ASSERT (is_ppc_elf (abfd));
4002 /* Initialize howto table if not already done. */
4003 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4004 ppc_elf_howto_init ();
4006 htab = ppc_elf_hash_table (info);
4007 if (htab->glink == NULL)
4009 if (htab->elf.dynobj == NULL)
4010 htab->elf.dynobj = abfd;
4011 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4014 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4015 FALSE, FALSE, TRUE);
4016 symtab_hdr = &elf_symtab_hdr (abfd);
4017 sym_hashes = elf_sym_hashes (abfd);
4018 got2 = bfd_get_section_by_name (abfd, ".got2");
4021 rel_end = relocs + sec->reloc_count;
4022 for (rel = relocs; rel < rel_end; rel++)
4024 unsigned long r_symndx;
4025 enum elf_ppc_reloc_type r_type;
4026 struct elf_link_hash_entry *h;
4028 struct plt_entry **ifunc;
4030 r_symndx = ELF32_R_SYM (rel->r_info);
4031 if (r_symndx < symtab_hdr->sh_info)
4035 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4036 while (h->root.type == bfd_link_hash_indirect
4037 || h->root.type == bfd_link_hash_warning)
4038 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4040 /* PR15323, ref flags aren't set for references in the same
4042 h->root.non_ir_ref = 1;
4045 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4046 This shows up in particular in an R_PPC_ADDR32 in the eabi
4049 && htab->got == NULL
4050 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4052 if (htab->elf.dynobj == NULL)
4053 htab->elf.dynobj = abfd;
4054 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4056 BFD_ASSERT (h == htab->elf.hgot);
4060 r_type = ELF32_R_TYPE (rel->r_info);
4062 if (h == NULL && !htab->is_vxworks)
4064 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4069 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4071 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4072 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4077 /* STT_GNU_IFUNC symbols must have a PLT entry;
4078 In a non-pie executable even when there are
4080 if (!bfd_link_pic (info)
4081 || is_branch_reloc (r_type))
4084 if (r_type == R_PPC_PLTREL24)
4086 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4087 if (bfd_link_pic (info))
4088 addend = rel->r_addend;
4090 if (!update_plt_info (abfd, ifunc, got2, addend))
4096 if (!htab->is_vxworks
4097 && is_branch_reloc (r_type)
4102 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4103 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4104 /* We have a new-style __tls_get_addr call with a marker
4108 /* Mark this section as having an old-style call. */
4109 sec->has_tls_get_addr_call = 1;
4116 /* These special tls relocs tie a call to __tls_get_addr with
4117 its parameter symbol. */
4120 case R_PPC_GOT_TLSLD16:
4121 case R_PPC_GOT_TLSLD16_LO:
4122 case R_PPC_GOT_TLSLD16_HI:
4123 case R_PPC_GOT_TLSLD16_HA:
4124 tls_type = TLS_TLS | TLS_LD;
4127 case R_PPC_GOT_TLSGD16:
4128 case R_PPC_GOT_TLSGD16_LO:
4129 case R_PPC_GOT_TLSGD16_HI:
4130 case R_PPC_GOT_TLSGD16_HA:
4131 tls_type = TLS_TLS | TLS_GD;
4134 case R_PPC_GOT_TPREL16:
4135 case R_PPC_GOT_TPREL16_LO:
4136 case R_PPC_GOT_TPREL16_HI:
4137 case R_PPC_GOT_TPREL16_HA:
4138 if (bfd_link_pic (info))
4139 info->flags |= DF_STATIC_TLS;
4140 tls_type = TLS_TLS | TLS_TPREL;
4143 case R_PPC_GOT_DTPREL16:
4144 case R_PPC_GOT_DTPREL16_LO:
4145 case R_PPC_GOT_DTPREL16_HI:
4146 case R_PPC_GOT_DTPREL16_HA:
4147 tls_type = TLS_TLS | TLS_DTPREL;
4149 sec->has_tls_reloc = 1;
4152 /* GOT16 relocations */
4154 case R_PPC_GOT16_LO:
4155 case R_PPC_GOT16_HI:
4156 case R_PPC_GOT16_HA:
4157 /* This symbol requires a global offset table entry. */
4158 if (htab->got == NULL)
4160 if (htab->elf.dynobj == NULL)
4161 htab->elf.dynobj = abfd;
4162 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4167 h->got.refcount += 1;
4168 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4171 /* This is a global offset table entry for a local symbol. */
4172 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4175 /* We may also need a plt entry if the symbol turns out to be
4177 if (h != NULL && !bfd_link_pic (info))
4179 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4184 /* Indirect .sdata relocation. */
4185 case R_PPC_EMB_SDAI16:
4186 if (bfd_link_pic (info))
4188 bad_shared_reloc (abfd, r_type);
4191 htab->sdata[0].sym->ref_regular = 1;
4192 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4197 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4198 h->non_got_ref = TRUE;
4202 /* Indirect .sdata2 relocation. */
4203 case R_PPC_EMB_SDA2I16:
4204 if (bfd_link_pic (info))
4206 bad_shared_reloc (abfd, r_type);
4209 htab->sdata[1].sym->ref_regular = 1;
4210 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4215 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4216 h->non_got_ref = TRUE;
4220 case R_PPC_SDAREL16:
4221 htab->sdata[0].sym->ref_regular = 1;
4224 case R_PPC_VLE_SDAREL_LO16A:
4225 case R_PPC_VLE_SDAREL_LO16D:
4226 case R_PPC_VLE_SDAREL_HI16A:
4227 case R_PPC_VLE_SDAREL_HI16D:
4228 case R_PPC_VLE_SDAREL_HA16A:
4229 case R_PPC_VLE_SDAREL_HA16D:
4232 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4233 h->non_got_ref = TRUE;
4237 case R_PPC_VLE_REL8:
4238 case R_PPC_VLE_REL15:
4239 case R_PPC_VLE_REL24:
4240 case R_PPC_VLE_LO16A:
4241 case R_PPC_VLE_LO16D:
4242 case R_PPC_VLE_HI16A:
4243 case R_PPC_VLE_HI16D:
4244 case R_PPC_VLE_HA16A:
4245 case R_PPC_VLE_HA16D:
4248 case R_PPC_EMB_SDA2REL:
4249 if (bfd_link_pic (info))
4251 bad_shared_reloc (abfd, r_type);
4254 htab->sdata[1].sym->ref_regular = 1;
4257 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4258 h->non_got_ref = TRUE;
4262 case R_PPC_VLE_SDA21_LO:
4263 case R_PPC_VLE_SDA21:
4264 case R_PPC_EMB_SDA21:
4265 case R_PPC_EMB_RELSDA:
4266 if (bfd_link_pic (info))
4268 bad_shared_reloc (abfd, r_type);
4273 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4274 h->non_got_ref = TRUE;
4278 case R_PPC_EMB_NADDR32:
4279 case R_PPC_EMB_NADDR16:
4280 case R_PPC_EMB_NADDR16_LO:
4281 case R_PPC_EMB_NADDR16_HI:
4282 case R_PPC_EMB_NADDR16_HA:
4283 if (bfd_link_pic (info))
4285 bad_shared_reloc (abfd, r_type);
4289 h->non_got_ref = TRUE;
4292 case R_PPC_PLTREL24:
4297 case R_PPC_PLTREL32:
4298 case R_PPC_PLT16_LO:
4299 case R_PPC_PLT16_HI:
4300 case R_PPC_PLT16_HA:
4302 fprintf (stderr, "Reloc requires a PLT entry\n");
4304 /* This symbol requires a procedure linkage table entry. */
4309 /* It does not make sense to have a procedure linkage
4310 table entry for a non-ifunc local symbol. */
4311 info->callbacks->einfo
4312 (_("%P: %H: %s reloc against local symbol\n"),
4313 abfd, sec, rel->r_offset,
4314 ppc_elf_howto_table[r_type]->name);
4315 bfd_set_error (bfd_error_bad_value);
4323 if (r_type == R_PPC_PLTREL24)
4325 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4326 if (bfd_link_pic (info))
4327 addend = rel->r_addend;
4330 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4335 /* The following relocations don't need to propagate the
4336 relocation if linking a shared object since they are
4337 section relative. */
4339 case R_PPC_SECTOFF_LO:
4340 case R_PPC_SECTOFF_HI:
4341 case R_PPC_SECTOFF_HA:
4342 case R_PPC_DTPREL16:
4343 case R_PPC_DTPREL16_LO:
4344 case R_PPC_DTPREL16_HI:
4345 case R_PPC_DTPREL16_HA:
4350 case R_PPC_REL16_LO:
4351 case R_PPC_REL16_HI:
4352 case R_PPC_REL16_HA:
4353 case R_PPC_REL16DX_HA:
4354 ppc_elf_tdata (abfd)->has_rel16 = 1;
4357 /* These are just markers. */
4359 case R_PPC_EMB_MRKREF:
4363 case R_PPC_RELAX_PLT:
4364 case R_PPC_RELAX_PLTREL24:
4367 /* These should only appear in dynamic objects. */
4369 case R_PPC_GLOB_DAT:
4370 case R_PPC_JMP_SLOT:
4371 case R_PPC_RELATIVE:
4372 case R_PPC_IRELATIVE:
4375 /* These aren't handled yet. We'll report an error later. */
4377 case R_PPC_EMB_RELSEC16:
4378 case R_PPC_EMB_RELST_LO:
4379 case R_PPC_EMB_RELST_HI:
4380 case R_PPC_EMB_RELST_HA:
4381 case R_PPC_EMB_BIT_FLD:
4384 /* This refers only to functions defined in the shared library. */
4385 case R_PPC_LOCAL24PC:
4386 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4388 htab->plt_type = PLT_OLD;
4389 htab->old_bfd = abfd;
4391 if (h != NULL && h->type == STT_GNU_IFUNC)
4394 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4399 /* This relocation describes the C++ object vtable hierarchy.
4400 Reconstruct it for later use during GC. */
4401 case R_PPC_GNU_VTINHERIT:
4402 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4406 /* This relocation describes which C++ vtable entries are actually
4407 used. Record for later use during GC. */
4408 case R_PPC_GNU_VTENTRY:
4409 BFD_ASSERT (h != NULL);
4411 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4415 /* We shouldn't really be seeing these. */
4418 case R_PPC_TPREL16_LO:
4419 case R_PPC_TPREL16_HI:
4420 case R_PPC_TPREL16_HA:
4421 if (bfd_link_pic (info))
4422 info->flags |= DF_STATIC_TLS;
4426 case R_PPC_DTPMOD32:
4427 case R_PPC_DTPREL32:
4433 && (sec->flags & SEC_CODE) != 0
4434 && bfd_link_pic (info)
4435 && htab->plt_type == PLT_UNSET)
4437 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4438 the start of a function, which assembles to a REL32
4439 reference to .got2. If we detect one of these, then
4440 force the old PLT layout because the linker cannot
4441 reliably deduce the GOT pointer value needed for
4444 Elf_Internal_Sym *isym;
4446 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4451 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4454 htab->plt_type = PLT_OLD;
4455 htab->old_bfd = abfd;
4458 if (h == NULL || h == htab->elf.hgot)
4464 case R_PPC_ADDR16_LO:
4465 case R_PPC_ADDR16_HI:
4466 case R_PPC_ADDR16_HA:
4469 if (h != NULL && !bfd_link_pic (info))
4471 /* We may need a plt entry if the symbol turns out to be
4472 a function defined in a dynamic object. */
4473 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4476 /* We may need a copy reloc too. */
4478 h->pointer_equality_needed = 1;
4479 if (r_type == R_PPC_ADDR16_HA)
4480 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4481 if (r_type == R_PPC_ADDR16_LO)
4482 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4488 case R_PPC_REL14_BRTAKEN:
4489 case R_PPC_REL14_BRNTAKEN:
4492 if (h == htab->elf.hgot)
4494 if (htab->plt_type == PLT_UNSET)
4496 htab->plt_type = PLT_OLD;
4497 htab->old_bfd = abfd;
4505 case R_PPC_ADDR14_BRTAKEN:
4506 case R_PPC_ADDR14_BRNTAKEN:
4507 if (h != NULL && !bfd_link_pic (info))
4509 /* We may need a plt entry if the symbol turns out to be
4510 a function defined in a dynamic object. */
4512 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4518 /* If we are creating a shared library, and this is a reloc
4519 against a global symbol, or a non PC relative reloc
4520 against a local symbol, then we need to copy the reloc
4521 into the shared library. However, if we are linking with
4522 -Bsymbolic, we do not need to copy a reloc against a
4523 global symbol which is defined in an object we are
4524 including in the link (i.e., DEF_REGULAR is set). At
4525 this point we have not seen all the input files, so it is
4526 possible that DEF_REGULAR is not set now but will be set
4527 later (it is never cleared). In case of a weak definition,
4528 DEF_REGULAR may be cleared later by a strong definition in
4529 a shared library. We account for that possibility below by
4530 storing information in the dyn_relocs field of the hash
4531 table entry. A similar situation occurs when creating
4532 shared libraries and symbol visibility changes render the
4535 If on the other hand, we are creating an executable, we
4536 may need to keep relocations for symbols satisfied by a
4537 dynamic library if we manage to avoid copy relocs for the
4539 if ((bfd_link_pic (info)
4540 && (must_be_dyn_reloc (info, r_type)
4542 && (!SYMBOLIC_BIND (info, h)
4543 || h->root.type == bfd_link_hash_defweak
4544 || !h->def_regular))))
4545 || (ELIMINATE_COPY_RELOCS
4546 && !bfd_link_pic (info)
4548 && (h->root.type == bfd_link_hash_defweak
4549 || !h->def_regular)))
4553 "ppc_elf_check_relocs needs to "
4554 "create relocation for %s\n",
4555 (h && h->root.root.string
4556 ? h->root.root.string : "<unknown>"));
4560 if (htab->elf.dynobj == NULL)
4561 htab->elf.dynobj = abfd;
4563 sreloc = _bfd_elf_make_dynamic_reloc_section
4564 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4570 /* If this is a global symbol, we count the number of
4571 relocations we need for this symbol. */
4574 struct elf_dyn_relocs *p;
4575 struct elf_dyn_relocs **rel_head;
4577 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4579 if (p == NULL || p->sec != sec)
4581 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4584 p->next = *rel_head;
4591 if (!must_be_dyn_reloc (info, r_type))
4596 /* Track dynamic relocs needed for local syms too.
4597 We really need local syms available to do this
4599 struct ppc_dyn_relocs *p;
4600 struct ppc_dyn_relocs **rel_head;
4601 bfd_boolean is_ifunc;
4604 Elf_Internal_Sym *isym;
4606 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4611 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4615 vpp = &elf_section_data (s)->local_dynrel;
4616 rel_head = (struct ppc_dyn_relocs **) vpp;
4617 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4619 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4621 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4623 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4626 p->next = *rel_head;
4629 p->ifunc = is_ifunc;
4644 /* Merge object attributes from IBFD into OBFD. Raise an error if
4645 there are conflicting attributes. */
4647 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4649 obj_attribute *in_attr, *in_attrs;
4650 obj_attribute *out_attr, *out_attrs;
4652 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4654 /* This is the first object. Copy the attributes. */
4655 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4657 /* Use the Tag_null value to indicate the attributes have been
4659 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4664 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4665 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4667 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4668 non-conflicting ones. */
4669 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4670 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4671 if (in_attr->i != out_attr->i)
4674 if (out_attr->i == 0)
4675 out_attr->i = in_attr->i;
4676 else if (in_attr->i == 0)
4678 else if (out_attr->i == 1 && in_attr->i == 2)
4680 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4681 else if (out_attr->i == 1 && in_attr->i == 3)
4683 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4685 else if (out_attr->i == 3 && in_attr->i == 1)
4687 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4689 else if (out_attr->i == 3 && in_attr->i == 2)
4691 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4693 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4695 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4696 else if (in_attr->i > 3)
4698 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4702 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4706 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4707 merge non-conflicting ones. */
4708 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4709 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4710 if (in_attr->i != out_attr->i)
4712 const char *in_abi = NULL, *out_abi = NULL;
4716 case 1: in_abi = "generic"; break;
4717 case 2: in_abi = "AltiVec"; break;
4718 case 3: in_abi = "SPE"; break;
4721 switch (out_attr->i)
4723 case 1: out_abi = "generic"; break;
4724 case 2: out_abi = "AltiVec"; break;
4725 case 3: out_abi = "SPE"; break;
4729 if (out_attr->i == 0)
4730 out_attr->i = in_attr->i;
4731 else if (in_attr->i == 0)
4733 /* For now, allow generic to transition to AltiVec or SPE
4734 without a warning. If GCC marked files with their stack
4735 alignment and used don't-care markings for files which are
4736 not affected by the vector ABI, we could warn about this
4738 else if (out_attr->i == 1)
4739 out_attr->i = in_attr->i;
4740 else if (in_attr->i == 1)
4742 else if (in_abi == NULL)
4744 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4746 else if (out_abi == NULL)
4748 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4752 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4753 ibfd, obfd, in_abi, out_abi);
4756 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4757 and merge non-conflicting ones. */
4758 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4759 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4760 if (in_attr->i != out_attr->i)
4763 if (out_attr->i == 0)
4764 out_attr->i = in_attr->i;
4765 else if (in_attr->i == 0)
4767 else if (out_attr->i == 1 && in_attr->i == 2)
4769 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4770 else if (out_attr->i == 2 && in_attr->i == 1)
4772 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4773 else if (in_attr->i > 2)
4775 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4779 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4783 /* Merge Tag_compatibility attributes and any common GNU ones. */
4784 _bfd_elf_merge_object_attributes (ibfd, obfd);
4789 /* Merge backend specific data from an object file to the output
4790 object file when linking. */
4793 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4799 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4802 /* Check if we have the same endianness. */
4803 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4806 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4809 new_flags = elf_elfheader (ibfd)->e_flags;
4810 old_flags = elf_elfheader (obfd)->e_flags;
4811 if (!elf_flags_init (obfd))
4813 /* First call, no flags set. */
4814 elf_flags_init (obfd) = TRUE;
4815 elf_elfheader (obfd)->e_flags = new_flags;
4818 /* Compatible flags are ok. */
4819 else if (new_flags == old_flags)
4822 /* Incompatible flags. */
4825 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4826 to be linked with either. */
4828 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4829 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4832 (*_bfd_error_handler)
4833 (_("%B: compiled with -mrelocatable and linked with "
4834 "modules compiled normally"), ibfd);
4836 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4837 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4840 (*_bfd_error_handler)
4841 (_("%B: compiled normally and linked with "
4842 "modules compiled with -mrelocatable"), ibfd);
4845 /* The output is -mrelocatable-lib iff both the input files are. */
4846 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4847 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4849 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4850 but each input file is either -mrelocatable or -mrelocatable-lib. */
4851 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4852 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4853 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4854 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4856 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4857 any module uses it. */
4858 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4860 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4861 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4863 /* Warn about any other mismatches. */
4864 if (new_flags != old_flags)
4867 (*_bfd_error_handler)
4868 (_("%B: uses different e_flags (0x%lx) fields "
4869 "than previous modules (0x%lx)"),
4870 ibfd, (long) new_flags, (long) old_flags);
4875 bfd_set_error (bfd_error_bad_value);
4884 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4886 split16_format_type split16_format)
4889 unsigned int insn, top5;
4891 insn = bfd_get_32 (output_bfd, loc);
4892 top5 = value & 0xf800;
4893 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4894 insn &= (split16_format == split16a_type ? ~0x1f007ff : ~0x1f07ff);
4896 insn |= value & 0x7ff;
4897 bfd_put_32 (output_bfd, insn, loc);
4901 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4902 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4904 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4905 struct bfd_link_info *info)
4907 struct ppc_elf_link_hash_table *htab;
4910 htab = ppc_elf_hash_table (info);
4912 if (htab->plt_type == PLT_UNSET)
4914 struct elf_link_hash_entry *h;
4916 if (htab->params->plt_style == PLT_OLD)
4917 htab->plt_type = PLT_OLD;
4918 else if (bfd_link_pic (info)
4919 && htab->elf.dynamic_sections_created
4920 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4921 FALSE, FALSE, TRUE)) != NULL
4922 && (h->type == STT_FUNC
4925 && !(SYMBOL_CALLS_LOCAL (info, h)
4926 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4927 && h->root.type == bfd_link_hash_undefweak)))
4929 /* Profiling of shared libs (and pies) is not supported with
4930 secure plt, because ppc32 does profiling before a
4931 function prologue and a secure plt pic call stubs needs
4932 r30 to be set up. */
4933 htab->plt_type = PLT_OLD;
4938 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4940 /* Look through the reloc flags left by ppc_elf_check_relocs.
4941 Use the old style bss plt if a file makes plt calls
4942 without using the new relocs, and if ld isn't given
4943 --secure-plt and we never see REL16 relocs. */
4944 if (plt_type == PLT_UNSET)
4946 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4947 if (is_ppc_elf (ibfd))
4949 if (ppc_elf_tdata (ibfd)->has_rel16)
4951 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4954 htab->old_bfd = ibfd;
4958 htab->plt_type = plt_type;
4961 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4963 if (htab->old_bfd != NULL)
4964 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4967 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4970 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4972 if (htab->plt_type == PLT_NEW)
4974 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4975 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4977 /* The new PLT is a loaded section. */
4978 if (htab->plt != NULL
4979 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4982 /* The new GOT is not executable. */
4983 if (htab->got != NULL
4984 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4989 /* Stop an unused .glink section from affecting .text alignment. */
4990 if (htab->glink != NULL
4991 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4994 return htab->plt_type == PLT_NEW;
4997 /* Return the section that should be marked against GC for a given
5001 ppc_elf_gc_mark_hook (asection *sec,
5002 struct bfd_link_info *info,
5003 Elf_Internal_Rela *rel,
5004 struct elf_link_hash_entry *h,
5005 Elf_Internal_Sym *sym)
5008 switch (ELF32_R_TYPE (rel->r_info))
5010 case R_PPC_GNU_VTINHERIT:
5011 case R_PPC_GNU_VTENTRY:
5015 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5018 /* Update the got, plt and dynamic reloc reference counts for the
5019 section being removed. */
5022 ppc_elf_gc_sweep_hook (bfd *abfd,
5023 struct bfd_link_info *info,
5025 const Elf_Internal_Rela *relocs)
5027 struct ppc_elf_link_hash_table *htab;
5028 Elf_Internal_Shdr *symtab_hdr;
5029 struct elf_link_hash_entry **sym_hashes;
5030 bfd_signed_vma *local_got_refcounts;
5031 const Elf_Internal_Rela *rel, *relend;
5034 if (bfd_link_relocatable (info))
5037 if ((sec->flags & SEC_ALLOC) == 0)
5040 elf_section_data (sec)->local_dynrel = NULL;
5042 htab = ppc_elf_hash_table (info);
5043 symtab_hdr = &elf_symtab_hdr (abfd);
5044 sym_hashes = elf_sym_hashes (abfd);
5045 local_got_refcounts = elf_local_got_refcounts (abfd);
5046 got2 = bfd_get_section_by_name (abfd, ".got2");
5048 relend = relocs + sec->reloc_count;
5049 for (rel = relocs; rel < relend; rel++)
5051 unsigned long r_symndx;
5052 enum elf_ppc_reloc_type r_type;
5053 struct elf_link_hash_entry *h = NULL;
5055 r_symndx = ELF32_R_SYM (rel->r_info);
5056 if (r_symndx >= symtab_hdr->sh_info)
5058 struct elf_dyn_relocs **pp, *p;
5059 struct ppc_elf_link_hash_entry *eh;
5061 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5062 while (h->root.type == bfd_link_hash_indirect
5063 || h->root.type == bfd_link_hash_warning)
5064 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5065 eh = (struct ppc_elf_link_hash_entry *) h;
5067 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5070 /* Everything must go for SEC. */
5076 r_type = ELF32_R_TYPE (rel->r_info);
5077 if (!htab->is_vxworks
5079 && local_got_refcounts != NULL
5080 && (!bfd_link_pic (info)
5081 || is_branch_reloc (r_type)))
5083 struct plt_entry **local_plt = (struct plt_entry **)
5084 (local_got_refcounts + symtab_hdr->sh_info);
5085 char *local_got_tls_masks = (char *)
5086 (local_plt + symtab_hdr->sh_info);
5087 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5089 struct plt_entry **ifunc = local_plt + r_symndx;
5091 struct plt_entry *ent;
5093 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5094 addend = rel->r_addend;
5095 ent = find_plt_ent (ifunc, got2, addend);
5096 if (ent->plt.refcount > 0)
5097 ent->plt.refcount -= 1;
5104 case R_PPC_GOT_TLSLD16:
5105 case R_PPC_GOT_TLSLD16_LO:
5106 case R_PPC_GOT_TLSLD16_HI:
5107 case R_PPC_GOT_TLSLD16_HA:
5108 case R_PPC_GOT_TLSGD16:
5109 case R_PPC_GOT_TLSGD16_LO:
5110 case R_PPC_GOT_TLSGD16_HI:
5111 case R_PPC_GOT_TLSGD16_HA:
5112 case R_PPC_GOT_TPREL16:
5113 case R_PPC_GOT_TPREL16_LO:
5114 case R_PPC_GOT_TPREL16_HI:
5115 case R_PPC_GOT_TPREL16_HA:
5116 case R_PPC_GOT_DTPREL16:
5117 case R_PPC_GOT_DTPREL16_LO:
5118 case R_PPC_GOT_DTPREL16_HI:
5119 case R_PPC_GOT_DTPREL16_HA:
5121 case R_PPC_GOT16_LO:
5122 case R_PPC_GOT16_HI:
5123 case R_PPC_GOT16_HA:
5126 if (h->got.refcount > 0)
5128 if (!bfd_link_pic (info))
5130 struct plt_entry *ent;
5132 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5133 if (ent != NULL && ent->plt.refcount > 0)
5134 ent->plt.refcount -= 1;
5137 else if (local_got_refcounts != NULL)
5139 if (local_got_refcounts[r_symndx] > 0)
5140 local_got_refcounts[r_symndx]--;
5146 case R_PPC_REL14_BRTAKEN:
5147 case R_PPC_REL14_BRNTAKEN:
5149 if (h == NULL || h == htab->elf.hgot)
5156 case R_PPC_ADDR16_LO:
5157 case R_PPC_ADDR16_HI:
5158 case R_PPC_ADDR16_HA:
5160 case R_PPC_ADDR14_BRTAKEN:
5161 case R_PPC_ADDR14_BRNTAKEN:
5164 if (bfd_link_pic (info))
5168 case R_PPC_PLTREL24:
5169 case R_PPC_PLTREL32:
5170 case R_PPC_PLT16_LO:
5171 case R_PPC_PLT16_HI:
5172 case R_PPC_PLT16_HA:
5176 struct plt_entry *ent;
5178 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5179 addend = rel->r_addend;
5180 ent = find_plt_ent (&h->plt.plist, got2, addend);
5181 if (ent != NULL && ent->plt.refcount > 0)
5182 ent->plt.refcount -= 1;
5193 /* Set plt output section type, htab->tls_get_addr, and call the
5194 generic ELF tls_setup function. */
5197 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5199 struct ppc_elf_link_hash_table *htab;
5201 htab = ppc_elf_hash_table (info);
5202 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5203 FALSE, FALSE, TRUE);
5204 if (htab->plt_type != PLT_NEW)
5205 htab->params->no_tls_get_addr_opt = TRUE;
5207 if (!htab->params->no_tls_get_addr_opt)
5209 struct elf_link_hash_entry *opt, *tga;
5210 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5211 FALSE, FALSE, TRUE);
5213 && (opt->root.type == bfd_link_hash_defined
5214 || opt->root.type == bfd_link_hash_defweak))
5216 /* If glibc supports an optimized __tls_get_addr call stub,
5217 signalled by the presence of __tls_get_addr_opt, and we'll
5218 be calling __tls_get_addr via a plt call stub, then
5219 make __tls_get_addr point to __tls_get_addr_opt. */
5220 tga = htab->tls_get_addr;
5221 if (htab->elf.dynamic_sections_created
5223 && (tga->type == STT_FUNC
5225 && !(SYMBOL_CALLS_LOCAL (info, tga)
5226 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5227 && tga->root.type == bfd_link_hash_undefweak)))
5229 struct plt_entry *ent;
5230 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5231 if (ent->plt.refcount > 0)
5235 tga->root.type = bfd_link_hash_indirect;
5236 tga->root.u.i.link = &opt->root;
5237 ppc_elf_copy_indirect_symbol (info, opt, tga);
5238 opt->forced_local = 0;
5239 if (opt->dynindx != -1)
5241 /* Use __tls_get_addr_opt in dynamic relocations. */
5243 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5245 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5248 htab->tls_get_addr = opt;
5253 htab->params->no_tls_get_addr_opt = TRUE;
5255 if (htab->plt_type == PLT_NEW
5256 && htab->plt != NULL
5257 && htab->plt->output_section != NULL)
5259 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5260 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5263 return _bfd_elf_tls_setup (obfd, info);
5266 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5270 branch_reloc_hash_match (const bfd *ibfd,
5271 const Elf_Internal_Rela *rel,
5272 const struct elf_link_hash_entry *hash)
5274 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5275 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5276 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5278 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5280 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5281 struct elf_link_hash_entry *h;
5283 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5284 while (h->root.type == bfd_link_hash_indirect
5285 || h->root.type == bfd_link_hash_warning)
5286 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5293 /* Run through all the TLS relocs looking for optimization
5297 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5298 struct bfd_link_info *info)
5302 struct ppc_elf_link_hash_table *htab;
5305 if (!bfd_link_executable (info))
5308 htab = ppc_elf_hash_table (info);
5312 /* Make two passes through the relocs. First time check that tls
5313 relocs involved in setting up a tls_get_addr call are indeed
5314 followed by such a call. If they are not, don't do any tls
5315 optimization. On the second pass twiddle tls_mask flags to
5316 notify relocate_section that optimization can be done, and
5317 adjust got and plt refcounts. */
5318 for (pass = 0; pass < 2; ++pass)
5319 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5321 Elf_Internal_Sym *locsyms = NULL;
5322 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5323 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5325 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5326 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5328 Elf_Internal_Rela *relstart, *rel, *relend;
5329 int expecting_tls_get_addr = 0;
5331 /* Read the relocations. */
5332 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5334 if (relstart == NULL)
5337 relend = relstart + sec->reloc_count;
5338 for (rel = relstart; rel < relend; rel++)
5340 enum elf_ppc_reloc_type r_type;
5341 unsigned long r_symndx;
5342 struct elf_link_hash_entry *h = NULL;
5344 char tls_set, tls_clear;
5345 bfd_boolean is_local;
5346 bfd_signed_vma *got_count;
5348 r_symndx = ELF32_R_SYM (rel->r_info);
5349 if (r_symndx >= symtab_hdr->sh_info)
5351 struct elf_link_hash_entry **sym_hashes;
5353 sym_hashes = elf_sym_hashes (ibfd);
5354 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5355 while (h->root.type == bfd_link_hash_indirect
5356 || h->root.type == bfd_link_hash_warning)
5357 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5365 r_type = ELF32_R_TYPE (rel->r_info);
5366 /* If this section has old-style __tls_get_addr calls
5367 without marker relocs, then check that each
5368 __tls_get_addr call reloc is preceded by a reloc
5369 that conceivably belongs to the __tls_get_addr arg
5370 setup insn. If we don't find matching arg setup
5371 relocs, don't do any tls optimization. */
5373 && sec->has_tls_get_addr_call
5375 && h == htab->tls_get_addr
5376 && !expecting_tls_get_addr
5377 && is_branch_reloc (r_type))
5379 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5380 "TLS optimization disabled\n",
5381 ibfd, sec, rel->r_offset);
5382 if (elf_section_data (sec)->relocs != relstart)
5387 expecting_tls_get_addr = 0;
5390 case R_PPC_GOT_TLSLD16:
5391 case R_PPC_GOT_TLSLD16_LO:
5392 expecting_tls_get_addr = 1;
5395 case R_PPC_GOT_TLSLD16_HI:
5396 case R_PPC_GOT_TLSLD16_HA:
5397 /* These relocs should never be against a symbol
5398 defined in a shared lib. Leave them alone if
5399 that turns out to be the case. */
5408 case R_PPC_GOT_TLSGD16:
5409 case R_PPC_GOT_TLSGD16_LO:
5410 expecting_tls_get_addr = 1;
5413 case R_PPC_GOT_TLSGD16_HI:
5414 case R_PPC_GOT_TLSGD16_HA:
5420 tls_set = TLS_TLS | TLS_TPRELGD;
5424 case R_PPC_GOT_TPREL16:
5425 case R_PPC_GOT_TPREL16_LO:
5426 case R_PPC_GOT_TPREL16_HI:
5427 case R_PPC_GOT_TPREL16_HA:
5432 tls_clear = TLS_TPREL;
5440 expecting_tls_get_addr = 2;
5451 if (!expecting_tls_get_addr
5452 || (expecting_tls_get_addr == 1
5453 && !sec->has_tls_get_addr_call))
5456 if (rel + 1 < relend
5457 && branch_reloc_hash_match (ibfd, rel + 1,
5458 htab->tls_get_addr))
5461 /* Uh oh, we didn't find the expected call. We
5462 could just mark this symbol to exclude it
5463 from tls optimization but it's safer to skip
5464 the entire optimization. */
5465 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5466 "TLS optimization disabled\n"),
5467 ibfd, sec, rel->r_offset);
5468 if (elf_section_data (sec)->relocs != relstart)
5473 if (expecting_tls_get_addr)
5475 struct plt_entry *ent;
5478 if (bfd_link_pic (info)
5479 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5480 addend = rel[1].r_addend;
5481 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5483 if (ent != NULL && ent->plt.refcount > 0)
5484 ent->plt.refcount -= 1;
5486 if (expecting_tls_get_addr == 2)
5492 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5493 got_count = &h->got.refcount;
5497 bfd_signed_vma *lgot_refs;
5498 struct plt_entry **local_plt;
5501 if (locsyms == NULL)
5503 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5504 if (locsyms == NULL)
5505 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5506 symtab_hdr->sh_info,
5507 0, NULL, NULL, NULL);
5508 if (locsyms == NULL)
5510 if (elf_section_data (sec)->relocs != relstart)
5515 lgot_refs = elf_local_got_refcounts (ibfd);
5516 if (lgot_refs == NULL)
5518 local_plt = (struct plt_entry **)
5519 (lgot_refs + symtab_hdr->sh_info);
5520 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5521 tls_mask = &lgot_masks[r_symndx];
5522 got_count = &lgot_refs[r_symndx];
5527 /* We managed to get rid of a got entry. */
5532 *tls_mask |= tls_set;
5533 *tls_mask &= ~tls_clear;
5536 if (elf_section_data (sec)->relocs != relstart)
5541 && (symtab_hdr->contents != (unsigned char *) locsyms))
5543 if (!info->keep_memory)
5546 symtab_hdr->contents = (unsigned char *) locsyms;
5552 /* Return true if we have dynamic relocs that apply to read-only sections. */
5555 readonly_dynrelocs (struct elf_link_hash_entry *h)
5557 struct elf_dyn_relocs *p;
5559 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5561 asection *s = p->sec->output_section;
5564 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5565 == (SEC_READONLY | SEC_ALLOC)))
5571 /* Adjust a symbol defined by a dynamic object and referenced by a
5572 regular object. The current definition is in some section of the
5573 dynamic object, but we're not including those sections. We have to
5574 change the definition to something the rest of the link can
5578 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5579 struct elf_link_hash_entry *h)
5581 struct ppc_elf_link_hash_table *htab;
5585 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5586 h->root.root.string);
5589 /* Make sure we know what is going on here. */
5590 htab = ppc_elf_hash_table (info);
5591 BFD_ASSERT (htab->elf.dynobj != NULL
5593 || h->type == STT_GNU_IFUNC
5594 || h->u.weakdef != NULL
5597 && !h->def_regular)));
5599 /* Deal with function syms. */
5600 if (h->type == STT_FUNC
5601 || h->type == STT_GNU_IFUNC
5604 /* Clear procedure linkage table information for any symbol that
5605 won't need a .plt entry. */
5606 struct plt_entry *ent;
5607 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5608 if (ent->plt.refcount > 0)
5611 || (h->type != STT_GNU_IFUNC
5612 && (SYMBOL_CALLS_LOCAL (info, h)
5613 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5614 && h->root.type == bfd_link_hash_undefweak))))
5616 /* A PLT entry is not required/allowed when:
5618 1. We are not using ld.so; because then the PLT entry
5619 can't be set up, so we can't use one. In this case,
5620 ppc_elf_adjust_dynamic_symbol won't even be called.
5622 2. GC has rendered the entry unused.
5624 3. We know for certain that a call to this symbol
5625 will go to this object, or will remain undefined. */
5626 h->plt.plist = NULL;
5628 h->pointer_equality_needed = 0;
5632 /* Taking a function's address in a read/write section
5633 doesn't require us to define the function symbol in the
5634 executable on a plt call stub. A dynamic reloc can
5636 if (h->pointer_equality_needed
5637 && h->type != STT_GNU_IFUNC
5638 && !htab->is_vxworks
5639 && !ppc_elf_hash_entry (h)->has_sda_refs
5640 && !readonly_dynrelocs (h))
5642 h->pointer_equality_needed = 0;
5646 /* After adjust_dynamic_symbol, non_got_ref set in the
5647 non-shared case means that we have allocated space in
5648 .dynbss for the symbol and thus dyn_relocs for this
5649 symbol should be discarded.
5650 If we get here we know we are making a PLT entry for this
5651 symbol, and in an executable we'd normally resolve
5652 relocations against this symbol to the PLT entry. Allow
5653 dynamic relocs if the reference is weak, and the dynamic
5654 relocs will not cause text relocation. */
5655 else if (!h->ref_regular_nonweak
5657 && h->type != STT_GNU_IFUNC
5658 && !htab->is_vxworks
5659 && !ppc_elf_hash_entry (h)->has_sda_refs
5660 && !readonly_dynrelocs (h))
5663 h->protected_def = 0;
5667 h->plt.plist = NULL;
5669 /* If this is a weak symbol, and there is a real definition, the
5670 processor independent code will have arranged for us to see the
5671 real definition first, and we can just use the same value. */
5672 if (h->u.weakdef != NULL)
5674 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5675 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5676 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5677 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5678 if (ELIMINATE_COPY_RELOCS)
5679 h->non_got_ref = h->u.weakdef->non_got_ref;
5683 /* This is a reference to a symbol defined by a dynamic object which
5684 is not a function. */
5686 /* If we are creating a shared library, we must presume that the
5687 only references to the symbol are via the global offset table.
5688 For such cases we need not do anything here; the relocations will
5689 be handled correctly by relocate_section. */
5690 if (bfd_link_pic (info))
5692 h->protected_def = 0;
5696 /* If there are no references to this symbol that do not use the
5697 GOT, we don't need to generate a copy reloc. */
5698 if (!h->non_got_ref)
5700 h->protected_def = 0;
5704 /* Protected variables do not work with .dynbss. The copy in
5705 .dynbss won't be used by the shared library with the protected
5706 definition for the variable. Editing to PIC, or text relocations
5707 are preferable to an incorrect program. */
5708 if (h->protected_def)
5710 if (ELIMINATE_COPY_RELOCS
5711 && ppc_elf_hash_entry (h)->has_addr16_ha
5712 && ppc_elf_hash_entry (h)->has_addr16_lo
5713 && htab->params->pic_fixup == 0
5714 && info->disable_target_specific_optimizations <= 1)
5715 htab->params->pic_fixup = 1;
5720 /* If -z nocopyreloc was given, we won't generate them either. */
5721 if (info->nocopyreloc)
5727 /* If we didn't find any dynamic relocs in read-only sections, then
5728 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5729 We can't do this if there are any small data relocations. This
5730 doesn't work on VxWorks, where we can not have dynamic
5731 relocations (other than copy and jump slot relocations) in an
5733 if (ELIMINATE_COPY_RELOCS
5734 && !ppc_elf_hash_entry (h)->has_sda_refs
5735 && !htab->is_vxworks
5737 && !readonly_dynrelocs (h))
5743 /* We must allocate the symbol in our .dynbss section, which will
5744 become part of the .bss section of the executable. There will be
5745 an entry for this symbol in the .dynsym section. The dynamic
5746 object will contain position independent code, so all references
5747 from the dynamic object to this symbol will go through the global
5748 offset table. The dynamic linker will use the .dynsym entry to
5749 determine the address it must put in the global offset table, so
5750 both the dynamic object and the regular object will refer to the
5751 same memory location for the variable.
5753 Of course, if the symbol is referenced using SDAREL relocs, we
5754 must instead allocate it in .sbss. */
5756 if (ppc_elf_hash_entry (h)->has_sda_refs)
5760 BFD_ASSERT (s != NULL);
5762 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5763 copy the initial value out of the dynamic object and into the
5764 runtime process image. We need to remember the offset into the
5765 .rela.bss section we are going to use. */
5766 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5770 if (ppc_elf_hash_entry (h)->has_sda_refs)
5771 srel = htab->relsbss;
5773 srel = htab->relbss;
5774 BFD_ASSERT (srel != NULL);
5775 srel->size += sizeof (Elf32_External_Rela);
5779 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5782 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5783 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5784 specifying the addend on the plt relocation. For -fpic code, the sym
5785 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5786 xxxxxxxx.got2.plt_pic32.<callee>. */
5789 add_stub_sym (struct plt_entry *ent,
5790 struct elf_link_hash_entry *h,
5791 struct bfd_link_info *info)
5793 struct elf_link_hash_entry *sh;
5794 size_t len1, len2, len3;
5797 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5799 if (bfd_link_pic (info))
5800 stub = ".plt_pic32.";
5802 stub = ".plt_call32.";
5804 len1 = strlen (h->root.root.string);
5805 len2 = strlen (stub);
5808 len3 = strlen (ent->sec->name);
5809 name = bfd_malloc (len1 + len2 + len3 + 9);
5812 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5814 memcpy (name + 8, ent->sec->name, len3);
5815 memcpy (name + 8 + len3, stub, len2);
5816 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5817 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5820 if (sh->root.type == bfd_link_hash_new)
5822 sh->root.type = bfd_link_hash_defined;
5823 sh->root.u.def.section = htab->glink;
5824 sh->root.u.def.value = ent->glink_offset;
5825 sh->ref_regular = 1;
5826 sh->def_regular = 1;
5827 sh->ref_regular_nonweak = 1;
5828 sh->forced_local = 1;
5830 sh->root.linker_def = 1;
5835 /* Allocate NEED contiguous space in .got, and return the offset.
5836 Handles allocation of the got header when crossing 32k. */
5839 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5842 unsigned int max_before_header;
5844 if (htab->plt_type == PLT_VXWORKS)
5846 where = htab->got->size;
5847 htab->got->size += need;
5851 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5852 if (need <= htab->got_gap)
5854 where = max_before_header - htab->got_gap;
5855 htab->got_gap -= need;
5859 if (htab->got->size + need > max_before_header
5860 && htab->got->size <= max_before_header)
5862 htab->got_gap = max_before_header - htab->got->size;
5863 htab->got->size = max_before_header + htab->got_header_size;
5865 where = htab->got->size;
5866 htab->got->size += need;
5872 /* Allocate space in associated reloc sections for dynamic relocs. */
5875 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5877 struct bfd_link_info *info = inf;
5878 struct ppc_elf_link_hash_entry *eh;
5879 struct ppc_elf_link_hash_table *htab;
5880 struct elf_dyn_relocs *p;
5882 if (h->root.type == bfd_link_hash_indirect)
5885 htab = ppc_elf_hash_table (info);
5886 if (htab->elf.dynamic_sections_created
5887 || h->type == STT_GNU_IFUNC)
5889 struct plt_entry *ent;
5890 bfd_boolean doneone = FALSE;
5891 bfd_vma plt_offset = 0, glink_offset = 0;
5894 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5895 if (ent->plt.refcount > 0)
5897 /* Make sure this symbol is output as a dynamic symbol. */
5898 if (h->dynindx == -1
5901 && htab->elf.dynamic_sections_created)
5903 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5907 dyn = htab->elf.dynamic_sections_created;
5908 if (bfd_link_pic (info)
5909 || h->type == STT_GNU_IFUNC
5910 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5912 asection *s = htab->plt;
5913 if (!dyn || h->dynindx == -1)
5916 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5920 plt_offset = s->size;
5923 ent->plt.offset = plt_offset;
5926 if (!doneone || bfd_link_pic (info))
5928 glink_offset = s->size;
5929 s->size += GLINK_ENTRY_SIZE;
5930 if (h == htab->tls_get_addr
5931 && !htab->params->no_tls_get_addr_opt)
5932 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5935 && !bfd_link_pic (info)
5939 h->root.u.def.section = s;
5940 h->root.u.def.value = glink_offset;
5942 ent->glink_offset = glink_offset;
5944 if (htab->params->emit_stub_syms
5945 && !add_stub_sym (ent, h, info))
5952 /* If this is the first .plt entry, make room
5953 for the special first entry. */
5955 s->size += htab->plt_initial_entry_size;
5957 /* The PowerPC PLT is actually composed of two
5958 parts, the first part is 2 words (for a load
5959 and a jump), and then there is a remaining
5960 word available at the end. */
5961 plt_offset = (htab->plt_initial_entry_size
5962 + (htab->plt_slot_size
5964 - htab->plt_initial_entry_size)
5965 / htab->plt_entry_size)));
5967 /* If this symbol is not defined in a regular
5968 file, and we are not generating a shared
5969 library, then set the symbol to this location
5970 in the .plt. This is to avoid text
5971 relocations, and is required to make
5972 function pointers compare as equal between
5973 the normal executable and the shared library. */
5974 if (! bfd_link_pic (info)
5978 h->root.u.def.section = s;
5979 h->root.u.def.value = plt_offset;
5982 /* Make room for this entry. */
5983 s->size += htab->plt_entry_size;
5984 /* After the 8192nd entry, room for two entries
5986 if (htab->plt_type == PLT_OLD
5987 && (s->size - htab->plt_initial_entry_size)
5988 / htab->plt_entry_size
5989 > PLT_NUM_SINGLE_ENTRIES)
5990 s->size += htab->plt_entry_size;
5992 ent->plt.offset = plt_offset;
5995 /* We also need to make an entry in the .rela.plt section. */
5998 if (!htab->elf.dynamic_sections_created
5999 || h->dynindx == -1)
6000 htab->reliplt->size += sizeof (Elf32_External_Rela);
6003 htab->relplt->size += sizeof (Elf32_External_Rela);
6005 if (htab->plt_type == PLT_VXWORKS)
6007 /* Allocate space for the unloaded relocations. */
6008 if (!bfd_link_pic (info)
6009 && htab->elf.dynamic_sections_created)
6012 == (bfd_vma) htab->plt_initial_entry_size)
6014 htab->srelplt2->size
6015 += (sizeof (Elf32_External_Rela)
6016 * VXWORKS_PLTRESOLVE_RELOCS);
6019 htab->srelplt2->size
6020 += (sizeof (Elf32_External_Rela)
6021 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6024 /* Every PLT entry has an associated GOT entry in
6026 htab->sgotplt->size += 4;
6033 ent->plt.offset = (bfd_vma) -1;
6036 ent->plt.offset = (bfd_vma) -1;
6040 h->plt.plist = NULL;
6046 h->plt.plist = NULL;
6050 eh = (struct ppc_elf_link_hash_entry *) h;
6051 if (eh->elf.got.refcount > 0
6052 || (ELIMINATE_COPY_RELOCS
6053 && !eh->elf.def_regular
6054 && eh->elf.protected_def
6055 && eh->has_addr16_ha
6056 && eh->has_addr16_lo
6057 && htab->params->pic_fixup > 0))
6062 /* Make sure this symbol is output as a dynamic symbol. */
6063 if (eh->elf.dynindx == -1
6064 && !eh->elf.forced_local
6065 && eh->elf.type != STT_GNU_IFUNC
6066 && htab->elf.dynamic_sections_created)
6068 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
6073 if ((eh->tls_mask & TLS_TLS) != 0)
6075 if ((eh->tls_mask & TLS_LD) != 0)
6077 if (!eh->elf.def_dynamic)
6078 /* We'll just use htab->tlsld_got.offset. This should
6079 always be the case. It's a little odd if we have
6080 a local dynamic reloc against a non-local symbol. */
6081 htab->tlsld_got.refcount += 1;
6085 if ((eh->tls_mask & TLS_GD) != 0)
6087 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6089 if ((eh->tls_mask & TLS_DTPREL) != 0)
6095 eh->elf.got.offset = (bfd_vma) -1;
6098 eh->elf.got.offset = allocate_got (htab, need);
6099 dyn = htab->elf.dynamic_sections_created;
6100 if ((bfd_link_pic (info)
6101 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6102 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6103 || eh->elf.root.type != bfd_link_hash_undefweak))
6105 asection *rsec = htab->relgot;
6107 if (eh->elf.type == STT_GNU_IFUNC)
6108 rsec = htab->reliplt;
6109 /* All the entries we allocated need relocs.
6110 Except LD only needs one. */
6111 if ((eh->tls_mask & TLS_LD) != 0
6112 && eh->elf.def_dynamic)
6114 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6119 eh->elf.got.offset = (bfd_vma) -1;
6121 if (eh->dyn_relocs == NULL
6122 || !htab->elf.dynamic_sections_created)
6125 /* In the shared -Bsymbolic case, discard space allocated for
6126 dynamic pc-relative relocs against symbols which turn out to be
6127 defined in regular objects. For the normal shared case, discard
6128 space for relocs that have become local due to symbol visibility
6131 if (bfd_link_pic (info))
6133 /* Relocs that use pc_count are those that appear on a call insn,
6134 or certain REL relocs (see must_be_dyn_reloc) that can be
6135 generated via assembly. We want calls to protected symbols to
6136 resolve directly to the function rather than going via the plt.
6137 If people want function pointer comparisons to work as expected
6138 then they should avoid writing weird assembly. */
6139 if (SYMBOL_CALLS_LOCAL (info, h))
6141 struct elf_dyn_relocs **pp;
6143 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6145 p->count -= p->pc_count;
6154 if (htab->is_vxworks)
6156 struct elf_dyn_relocs **pp;
6158 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6160 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6167 /* Discard relocs on undefined symbols that must be local. */
6168 if (eh->dyn_relocs != NULL
6169 && h->root.type == bfd_link_hash_undefined
6170 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6171 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6172 eh->dyn_relocs = NULL;
6174 /* Also discard relocs on undefined weak syms with non-default
6176 if (eh->dyn_relocs != NULL
6177 && h->root.type == bfd_link_hash_undefweak)
6179 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6180 eh->dyn_relocs = NULL;
6182 /* Make sure undefined weak symbols are output as a dynamic
6184 else if (h->dynindx == -1
6188 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6193 else if (ELIMINATE_COPY_RELOCS)
6195 /* For the non-shared case, discard space for relocs against
6196 symbols which turn out to need copy relocs or are not
6201 && !(h->protected_def
6202 && eh->has_addr16_ha
6203 && eh->has_addr16_lo
6204 && htab->params->pic_fixup > 0))
6206 /* Make sure this symbol is output as a dynamic symbol.
6207 Undefined weak syms won't yet be marked as dynamic. */
6208 if (h->dynindx == -1
6209 && !h->forced_local)
6211 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6215 /* If that succeeded, we know we'll be keeping all the
6217 if (h->dynindx != -1)
6221 eh->dyn_relocs = NULL;
6226 /* Finally, allocate space. */
6227 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6229 asection *sreloc = elf_section_data (p->sec)->sreloc;
6230 if (eh->elf.type == STT_GNU_IFUNC)
6231 sreloc = htab->reliplt;
6232 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6238 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6239 read-only sections. */
6242 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6244 if (h->root.type == bfd_link_hash_indirect)
6247 if (readonly_dynrelocs (h))
6249 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6251 /* Not an error, just cut short the traversal. */
6257 static const unsigned char glink_eh_frame_cie[] =
6259 0, 0, 0, 16, /* length. */
6260 0, 0, 0, 0, /* id. */
6261 1, /* CIE version. */
6262 'z', 'R', 0, /* Augmentation string. */
6263 4, /* Code alignment. */
6264 0x7c, /* Data alignment. */
6266 1, /* Augmentation size. */
6267 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6268 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6271 /* Set the sizes of the dynamic sections. */
6274 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6275 struct bfd_link_info *info)
6277 struct ppc_elf_link_hash_table *htab;
6283 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6286 htab = ppc_elf_hash_table (info);
6287 BFD_ASSERT (htab->elf.dynobj != NULL);
6289 if (elf_hash_table (info)->dynamic_sections_created)
6291 /* Set the contents of the .interp section to the interpreter. */
6292 if (bfd_link_executable (info) && !info->nointerp)
6294 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6295 BFD_ASSERT (s != NULL);
6296 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6297 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6301 if (htab->plt_type == PLT_OLD)
6302 htab->got_header_size = 16;
6303 else if (htab->plt_type == PLT_NEW)
6304 htab->got_header_size = 12;
6306 /* Set up .got offsets for local syms, and space for local dynamic
6308 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6310 bfd_signed_vma *local_got;
6311 bfd_signed_vma *end_local_got;
6312 struct plt_entry **local_plt;
6313 struct plt_entry **end_local_plt;
6315 bfd_size_type locsymcount;
6316 Elf_Internal_Shdr *symtab_hdr;
6318 if (!is_ppc_elf (ibfd))
6321 for (s = ibfd->sections; s != NULL; s = s->next)
6323 struct ppc_dyn_relocs *p;
6325 for (p = ((struct ppc_dyn_relocs *)
6326 elf_section_data (s)->local_dynrel);
6330 if (!bfd_is_abs_section (p->sec)
6331 && bfd_is_abs_section (p->sec->output_section))
6333 /* Input section has been discarded, either because
6334 it is a copy of a linkonce section or due to
6335 linker script /DISCARD/, so we'll be discarding
6338 else if (htab->is_vxworks
6339 && strcmp (p->sec->output_section->name,
6342 /* Relocations in vxworks .tls_vars sections are
6343 handled specially by the loader. */
6345 else if (p->count != 0)
6347 asection *sreloc = elf_section_data (p->sec)->sreloc;
6349 sreloc = htab->reliplt;
6350 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6351 if ((p->sec->output_section->flags
6352 & (SEC_READONLY | SEC_ALLOC))
6353 == (SEC_READONLY | SEC_ALLOC))
6354 info->flags |= DF_TEXTREL;
6359 local_got = elf_local_got_refcounts (ibfd);
6363 symtab_hdr = &elf_symtab_hdr (ibfd);
6364 locsymcount = symtab_hdr->sh_info;
6365 end_local_got = local_got + locsymcount;
6366 local_plt = (struct plt_entry **) end_local_got;
6367 end_local_plt = local_plt + locsymcount;
6368 lgot_masks = (char *) end_local_plt;
6370 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6373 unsigned int need = 0;
6374 if ((*lgot_masks & TLS_TLS) != 0)
6376 if ((*lgot_masks & TLS_GD) != 0)
6378 if ((*lgot_masks & TLS_LD) != 0)
6379 htab->tlsld_got.refcount += 1;
6380 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6382 if ((*lgot_masks & TLS_DTPREL) != 0)
6388 *local_got = (bfd_vma) -1;
6391 *local_got = allocate_got (htab, need);
6392 if (bfd_link_pic (info))
6394 asection *srel = htab->relgot;
6395 if ((*lgot_masks & PLT_IFUNC) != 0)
6396 srel = htab->reliplt;
6397 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6402 *local_got = (bfd_vma) -1;
6404 if (htab->is_vxworks)
6407 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6408 for (; local_plt < end_local_plt; ++local_plt)
6410 struct plt_entry *ent;
6411 bfd_boolean doneone = FALSE;
6412 bfd_vma plt_offset = 0, glink_offset = 0;
6414 for (ent = *local_plt; ent != NULL; ent = ent->next)
6415 if (ent->plt.refcount > 0)
6421 plt_offset = s->size;
6424 ent->plt.offset = plt_offset;
6427 if (!doneone || bfd_link_pic (info))
6429 glink_offset = s->size;
6430 s->size += GLINK_ENTRY_SIZE;
6432 ent->glink_offset = glink_offset;
6436 htab->reliplt->size += sizeof (Elf32_External_Rela);
6441 ent->plt.offset = (bfd_vma) -1;
6445 /* Allocate space for global sym dynamic relocs. */
6446 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6448 if (htab->tlsld_got.refcount > 0)
6450 htab->tlsld_got.offset = allocate_got (htab, 8);
6451 if (bfd_link_pic (info))
6452 htab->relgot->size += sizeof (Elf32_External_Rela);
6455 htab->tlsld_got.offset = (bfd_vma) -1;
6457 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6459 unsigned int g_o_t = 32768;
6461 /* If we haven't allocated the header, do so now. When we get here,
6462 for old plt/got the got size will be 0 to 32764 (not allocated),
6463 or 32780 to 65536 (header allocated). For new plt/got, the
6464 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6465 if (htab->got->size <= 32768)
6467 g_o_t = htab->got->size;
6468 if (htab->plt_type == PLT_OLD)
6470 htab->got->size += htab->got_header_size;
6473 htab->elf.hgot->root.u.def.value = g_o_t;
6475 if (bfd_link_pic (info))
6477 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6479 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6480 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6482 if (info->emitrelocations)
6484 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6486 if (sda != NULL && sda->ref_regular)
6487 sda->root.u.def.section->flags |= SEC_KEEP;
6488 sda = htab->sdata[1].sym;
6489 if (sda != NULL && sda->ref_regular)
6490 sda->root.u.def.section->flags |= SEC_KEEP;
6493 if (htab->glink != NULL
6494 && htab->glink->size != 0
6495 && htab->elf.dynamic_sections_created)
6497 htab->glink_pltresolve = htab->glink->size;
6498 /* Space for the branch table. ??? We don't need entries for
6499 non-dynamic symbols in this table. This case can arise with
6500 static ifuncs or forced local ifuncs. */
6501 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6502 /* Pad out to align the start of PLTresolve. */
6503 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6505 htab->glink->size += GLINK_PLTRESOLVE;
6507 if (htab->params->emit_stub_syms)
6509 struct elf_link_hash_entry *sh;
6510 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6511 TRUE, FALSE, FALSE);
6514 if (sh->root.type == bfd_link_hash_new)
6516 sh->root.type = bfd_link_hash_defined;
6517 sh->root.u.def.section = htab->glink;
6518 sh->root.u.def.value = htab->glink_pltresolve;
6519 sh->ref_regular = 1;
6520 sh->def_regular = 1;
6521 sh->ref_regular_nonweak = 1;
6522 sh->forced_local = 1;
6524 sh->root.linker_def = 1;
6526 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6527 TRUE, FALSE, FALSE);
6530 if (sh->root.type == bfd_link_hash_new)
6532 sh->root.type = bfd_link_hash_defined;
6533 sh->root.u.def.section = htab->glink;
6534 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6535 sh->ref_regular = 1;
6536 sh->def_regular = 1;
6537 sh->ref_regular_nonweak = 1;
6538 sh->forced_local = 1;
6540 sh->root.linker_def = 1;
6545 if (htab->glink != NULL
6546 && htab->glink->size != 0
6547 && htab->glink_eh_frame != NULL
6548 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6549 && _bfd_elf_eh_frame_present (info))
6551 s = htab->glink_eh_frame;
6552 s->size = sizeof (glink_eh_frame_cie) + 20;
6553 if (bfd_link_pic (info))
6556 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6561 /* We've now determined the sizes of the various dynamic sections.
6562 Allocate memory for them. */
6564 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6566 bfd_boolean strip_section = TRUE;
6568 if ((s->flags & SEC_LINKER_CREATED) == 0)
6574 /* We'd like to strip these sections if they aren't needed, but if
6575 we've exported dynamic symbols from them we must leave them.
6576 It's too late to tell BFD to get rid of the symbols. */
6577 if (htab->elf.hplt != NULL)
6578 strip_section = FALSE;
6579 /* Strip this section if we don't need it; see the
6582 else if (s == htab->iplt
6584 || s == htab->glink_eh_frame
6585 || s == htab->sgotplt
6587 || s == htab->dynbss
6588 || s == htab->dynsbss)
6590 /* Strip these too. */
6592 else if (s == htab->sdata[0].section
6593 || s == htab->sdata[1].section)
6595 strip_section = (s->flags & SEC_KEEP) == 0;
6597 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6602 /* Remember whether there are any relocation sections. */
6605 /* We use the reloc_count field as a counter if we need
6606 to copy relocs into the output file. */
6612 /* It's not one of our sections, so don't allocate space. */
6616 if (s->size == 0 && strip_section)
6618 /* If we don't need this section, strip it from the
6619 output file. This is mostly to handle .rela.bss and
6620 .rela.plt. We must create both sections in
6621 create_dynamic_sections, because they must be created
6622 before the linker maps input sections to output
6623 sections. The linker does that before
6624 adjust_dynamic_symbol is called, and it is that
6625 function which decides whether anything needs to go
6626 into these sections. */
6627 s->flags |= SEC_EXCLUDE;
6631 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6634 /* Allocate memory for the section contents. */
6635 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6636 if (s->contents == NULL)
6640 if (htab->elf.dynamic_sections_created)
6642 /* Add some entries to the .dynamic section. We fill in the
6643 values later, in ppc_elf_finish_dynamic_sections, but we
6644 must add the entries now so that we get the correct size for
6645 the .dynamic section. The DT_DEBUG entry is filled in by the
6646 dynamic linker and used by the debugger. */
6647 #define add_dynamic_entry(TAG, VAL) \
6648 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6650 if (bfd_link_executable (info))
6652 if (!add_dynamic_entry (DT_DEBUG, 0))
6656 if (htab->plt != NULL && htab->plt->size != 0)
6658 if (!add_dynamic_entry (DT_PLTGOT, 0)
6659 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6660 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6661 || !add_dynamic_entry (DT_JMPREL, 0))
6665 if (htab->plt_type == PLT_NEW
6666 && htab->glink != NULL
6667 && htab->glink->size != 0)
6669 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6671 if (!htab->params->no_tls_get_addr_opt
6672 && htab->tls_get_addr != NULL
6673 && htab->tls_get_addr->plt.plist != NULL
6674 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6680 if (!add_dynamic_entry (DT_RELA, 0)
6681 || !add_dynamic_entry (DT_RELASZ, 0)
6682 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6686 /* If any dynamic relocs apply to a read-only section, then we
6687 need a DT_TEXTREL entry. */
6688 if ((info->flags & DF_TEXTREL) == 0)
6689 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6692 if ((info->flags & DF_TEXTREL) != 0)
6694 if (!add_dynamic_entry (DT_TEXTREL, 0))
6697 if (htab->is_vxworks
6698 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6701 #undef add_dynamic_entry
6703 if (htab->glink_eh_frame != NULL
6704 && htab->glink_eh_frame->contents != NULL)
6706 unsigned char *p = htab->glink_eh_frame->contents;
6709 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6710 /* CIE length (rewrite in case little-endian). */
6711 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6712 p += sizeof (glink_eh_frame_cie);
6714 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6715 bfd_put_32 (htab->elf.dynobj, val, p);
6718 val = p - htab->glink_eh_frame->contents;
6719 bfd_put_32 (htab->elf.dynobj, val, p);
6721 /* Offset to .glink. Set later. */
6724 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6729 if (bfd_link_pic (info)
6730 && htab->elf.dynamic_sections_created)
6732 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6734 *p++ = DW_CFA_advance_loc + adv;
6737 *p++ = DW_CFA_advance_loc1;
6740 else if (adv < 65536)
6742 *p++ = DW_CFA_advance_loc2;
6743 bfd_put_16 (htab->elf.dynobj, adv, p);
6748 *p++ = DW_CFA_advance_loc4;
6749 bfd_put_32 (htab->elf.dynobj, adv, p);
6752 *p++ = DW_CFA_register;
6755 *p++ = DW_CFA_advance_loc + 4;
6756 *p++ = DW_CFA_restore_extended;
6759 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6760 == htab->glink_eh_frame->size);
6766 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6767 if it looks like nothing is using them. */
6770 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6772 struct elf_link_hash_entry *sda = lsect->sym;
6774 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6778 s = bfd_get_section_by_name (output_bfd, lsect->name);
6779 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6781 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6782 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6784 sda->def_regular = 0;
6785 /* This is somewhat magic. See elf_link_output_extsym. */
6786 sda->ref_dynamic = 1;
6787 sda->forced_local = 0;
6794 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6796 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6800 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6801 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6806 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6809 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6811 if (h->plt.plist != NULL
6813 && (!h->pointer_equality_needed
6814 || !h->ref_regular_nonweak))
6817 return _bfd_elf_hash_symbol (h);
6820 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6822 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6823 used for some functions that are allowed to break the ABI). */
6824 static const int shared_stub_entry[] =
6826 0x7c0802a6, /* mflr 0 */
6827 0x429f0005, /* bcl 20, 31, .Lxxx */
6828 0x7d8802a6, /* mflr 12 */
6829 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6830 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6831 0x7c0803a6, /* mtlr 0 */
6832 0x7d8903a6, /* mtctr 12 */
6833 0x4e800420, /* bctr */
6836 static const int stub_entry[] =
6838 0x3d800000, /* lis 12,xxx@ha */
6839 0x398c0000, /* addi 12,12,xxx@l */
6840 0x7d8903a6, /* mtctr 12 */
6841 0x4e800420, /* bctr */
6844 struct ppc_elf_relax_info
6846 unsigned int workaround_size;
6847 unsigned int picfixup_size;
6850 /* This function implements long branch trampolines, and the ppc476
6851 icache bug workaround. Any section needing trampolines or patch
6852 space for the workaround has its size extended so that we can
6853 add trampolines at the end of the section. */
6856 ppc_elf_relax_section (bfd *abfd,
6858 struct bfd_link_info *link_info,
6861 struct one_branch_fixup
6863 struct one_branch_fixup *next;
6865 /* Final link, can use the symbol offset. For a
6866 relocatable link we use the symbol's index. */
6871 Elf_Internal_Shdr *symtab_hdr;
6872 bfd_byte *contents = NULL;
6873 Elf_Internal_Sym *isymbuf = NULL;
6874 Elf_Internal_Rela *internal_relocs = NULL;
6875 Elf_Internal_Rela *irel, *irelend = NULL;
6876 struct one_branch_fixup *branch_fixups = NULL;
6877 struct ppc_elf_relax_info *relax_info = NULL;
6878 unsigned changes = 0;
6879 bfd_boolean workaround_change;
6880 struct ppc_elf_link_hash_table *htab;
6881 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6883 bfd_boolean maybe_pasted;
6887 /* No need to do anything with non-alloc or non-code sections. */
6888 if ((isec->flags & SEC_ALLOC) == 0
6889 || (isec->flags & SEC_CODE) == 0
6890 || (isec->flags & SEC_LINKER_CREATED) != 0
6894 /* We cannot represent the required PIC relocs in the output, so don't
6895 do anything. The linker doesn't support mixing -shared and -r
6897 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6900 htab = ppc_elf_hash_table (link_info);
6904 isec->size = (isec->size + 3) & -4;
6905 if (isec->rawsize == 0)
6906 isec->rawsize = isec->size;
6907 trampbase = isec->size;
6909 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6910 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6911 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6913 if (htab->params->ppc476_workaround
6914 || htab->params->pic_fixup > 0)
6916 if (elf_section_data (isec)->sec_info == NULL)
6918 elf_section_data (isec)->sec_info
6919 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6920 if (elf_section_data (isec)->sec_info == NULL)
6923 relax_info = elf_section_data (isec)->sec_info;
6924 trampbase -= relax_info->workaround_size;
6927 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6928 || strcmp (isec->output_section->name, ".fini") == 0);
6929 /* Space for a branch around any trampolines. */
6930 trampoff = trampbase;
6931 if (maybe_pasted && trampbase == isec->rawsize)
6934 symtab_hdr = &elf_symtab_hdr (abfd);
6936 if (htab->params->branch_trampolines
6937 || htab->params->pic_fixup > 0)
6939 /* Get a copy of the native relocations. */
6940 if (isec->reloc_count != 0)
6942 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6943 link_info->keep_memory);
6944 if (internal_relocs == NULL)
6948 got2 = bfd_get_section_by_name (abfd, ".got2");
6950 irelend = internal_relocs + isec->reloc_count;
6951 for (irel = internal_relocs; irel < irelend; irel++)
6953 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6956 struct one_branch_fixup *f;
6957 size_t insn_offset = 0;
6958 bfd_vma max_branch_offset = 0, val;
6961 struct elf_link_hash_entry *h;
6962 struct plt_entry **plist;
6963 unsigned char sym_type;
6968 case R_PPC_LOCAL24PC:
6969 case R_PPC_PLTREL24:
6970 max_branch_offset = 1 << 25;
6974 case R_PPC_REL14_BRTAKEN:
6975 case R_PPC_REL14_BRNTAKEN:
6976 max_branch_offset = 1 << 15;
6979 case R_PPC_ADDR16_HA:
6980 if (htab->params->pic_fixup > 0)
6988 /* Get the value of the symbol referred to by the reloc. */
6990 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6992 /* A local symbol. */
6993 Elf_Internal_Sym *isym;
6995 /* Read this BFD's local symbols. */
6996 if (isymbuf == NULL)
6998 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6999 if (isymbuf == NULL)
7000 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7001 symtab_hdr->sh_info, 0,
7006 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7007 if (isym->st_shndx == SHN_UNDEF)
7008 tsec = bfd_und_section_ptr;
7009 else if (isym->st_shndx == SHN_ABS)
7010 tsec = bfd_abs_section_ptr;
7011 else if (isym->st_shndx == SHN_COMMON)
7012 tsec = bfd_com_section_ptr;
7014 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7016 toff = isym->st_value;
7017 sym_type = ELF_ST_TYPE (isym->st_info);
7021 /* Global symbol handling. */
7024 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7025 h = elf_sym_hashes (abfd)[indx];
7027 while (h->root.type == bfd_link_hash_indirect
7028 || h->root.type == bfd_link_hash_warning)
7029 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7031 if (h->root.type == bfd_link_hash_defined
7032 || h->root.type == bfd_link_hash_defweak)
7034 tsec = h->root.u.def.section;
7035 toff = h->root.u.def.value;
7037 else if (h->root.type == bfd_link_hash_undefined
7038 || h->root.type == bfd_link_hash_undefweak)
7040 tsec = bfd_und_section_ptr;
7041 toff = bfd_link_relocatable (link_info) ? indx : 0;
7046 /* If this branch is to __tls_get_addr then we may later
7047 optimise away the call. We won't be needing a long-
7048 branch stub in that case. */
7049 if (bfd_link_executable (link_info)
7050 && h == htab->tls_get_addr
7051 && irel != internal_relocs)
7053 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7054 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7055 unsigned int tls_mask = 0;
7057 /* The previous reloc should be one of R_PPC_TLSGD or
7058 R_PPC_TLSLD, or for older object files, a reloc
7059 on the __tls_get_addr arg setup insn. Get tls
7060 mask bits from the symbol on that reloc. */
7061 if (t_symndx < symtab_hdr->sh_info)
7063 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7065 if (local_got_offsets != NULL)
7067 struct plt_entry **local_plt = (struct plt_entry **)
7068 (local_got_offsets + symtab_hdr->sh_info);
7069 char *lgot_masks = (char *)
7070 (local_plt + symtab_hdr->sh_info);
7071 tls_mask = lgot_masks[t_symndx];
7076 struct elf_link_hash_entry *th
7077 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7079 while (th->root.type == bfd_link_hash_indirect
7080 || th->root.type == bfd_link_hash_warning)
7081 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7084 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7087 /* The mask bits tell us if the call will be
7089 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7090 && (t_rtype == R_PPC_TLSGD
7091 || t_rtype == R_PPC_GOT_TLSGD16
7092 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7094 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7095 && (t_rtype == R_PPC_TLSLD
7096 || t_rtype == R_PPC_GOT_TLSLD16
7097 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7104 if (r_type == R_PPC_ADDR16_HA)
7109 && ppc_elf_hash_entry (h)->has_addr16_ha
7110 && ppc_elf_hash_entry (h)->has_addr16_lo)
7111 picfixup_size += 12;
7115 /* The condition here under which we call find_plt_ent must
7116 match that in relocate_section. If we call find_plt_ent here
7117 but not in relocate_section, or vice versa, then the branch
7118 destination used here may be incorrect. */
7122 /* We know is_branch_reloc (r_type) is true. */
7123 if (h->type == STT_GNU_IFUNC
7124 || r_type == R_PPC_PLTREL24)
7125 plist = &h->plt.plist;
7127 else if (sym_type == STT_GNU_IFUNC
7128 && elf_local_got_offsets (abfd) != NULL)
7130 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7131 struct plt_entry **local_plt = (struct plt_entry **)
7132 (local_got_offsets + symtab_hdr->sh_info);
7133 plist = local_plt + ELF32_R_SYM (irel->r_info);
7138 struct plt_entry *ent;
7140 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7141 addend = irel->r_addend;
7142 ent = find_plt_ent (plist, got2, addend);
7145 if (htab->plt_type == PLT_NEW
7147 || !htab->elf.dynamic_sections_created
7148 || h->dynindx == -1)
7151 toff = ent->glink_offset;
7156 toff = ent->plt.offset;
7161 /* If the branch and target are in the same section, you have
7162 no hope of adding stubs. We'll error out later should the
7167 /* There probably isn't any reason to handle symbols in
7168 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7169 attribute for a code section, and we are only looking at
7170 branches. However, implement it correctly here as a
7171 reference for other target relax_section functions. */
7172 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7174 /* At this stage in linking, no SEC_MERGE symbol has been
7175 adjusted, so all references to such symbols need to be
7176 passed through _bfd_merged_section_offset. (Later, in
7177 relocate_section, all SEC_MERGE symbols *except* for
7178 section symbols have been adjusted.)
7180 gas may reduce relocations against symbols in SEC_MERGE
7181 sections to a relocation against the section symbol when
7182 the original addend was zero. When the reloc is against
7183 a section symbol we should include the addend in the
7184 offset passed to _bfd_merged_section_offset, since the
7185 location of interest is the original symbol. On the
7186 other hand, an access to "sym+addend" where "sym" is not
7187 a section symbol should not include the addend; Such an
7188 access is presumed to be an offset from "sym"; The
7189 location of interest is just "sym". */
7190 if (sym_type == STT_SECTION)
7191 toff += irel->r_addend;
7194 = _bfd_merged_section_offset (abfd, &tsec,
7195 elf_section_data (tsec)->sec_info,
7198 if (sym_type != STT_SECTION)
7199 toff += irel->r_addend;
7201 /* PLTREL24 addends are special. */
7202 else if (r_type != R_PPC_PLTREL24)
7203 toff += irel->r_addend;
7205 /* Attempted -shared link of non-pic code loses. */
7206 if ((!bfd_link_relocatable (link_info)
7207 && tsec == bfd_und_section_ptr)
7208 || tsec->output_section == NULL
7209 || (tsec->owner != NULL
7210 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7213 roff = irel->r_offset;
7215 /* If the branch is in range, no need to do anything. */
7216 if (tsec != bfd_und_section_ptr
7217 && (!bfd_link_relocatable (link_info)
7218 /* A relocatable link may have sections moved during
7219 final link, so do not presume they remain in range. */
7220 || tsec->output_section == isec->output_section))
7222 bfd_vma symaddr, reladdr;
7224 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7225 reladdr = isec->output_section->vma + isec->output_offset + roff;
7226 if (symaddr - reladdr + max_branch_offset
7227 < 2 * max_branch_offset)
7231 /* Look for an existing fixup to this address. */
7232 for (f = branch_fixups; f ; f = f->next)
7233 if (f->tsec == tsec && f->toff == toff)
7239 unsigned long stub_rtype;
7241 val = trampoff - roff;
7242 if (val >= max_branch_offset)
7243 /* Oh dear, we can't reach a trampoline. Don't try to add
7244 one. We'll report an error later. */
7247 if (bfd_link_pic (link_info))
7249 size = 4 * ARRAY_SIZE (shared_stub_entry);
7254 size = 4 * ARRAY_SIZE (stub_entry);
7257 stub_rtype = R_PPC_RELAX;
7258 if (tsec == htab->plt
7259 || tsec == htab->glink)
7261 stub_rtype = R_PPC_RELAX_PLT;
7262 if (r_type == R_PPC_PLTREL24)
7263 stub_rtype = R_PPC_RELAX_PLTREL24;
7266 /* Hijack the old relocation. Since we need two
7267 relocations for this use a "composite" reloc. */
7268 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7270 irel->r_offset = trampoff + insn_offset;
7271 if (r_type == R_PPC_PLTREL24
7272 && stub_rtype != R_PPC_RELAX_PLTREL24)
7275 /* Record the fixup so we don't do it again this section. */
7276 f = bfd_malloc (sizeof (*f));
7277 f->next = branch_fixups;
7280 f->trampoff = trampoff;
7288 val = f->trampoff - roff;
7289 if (val >= max_branch_offset)
7292 /* Nop out the reloc, since we're finalizing things here. */
7293 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7296 /* Get the section contents. */
7297 if (contents == NULL)
7299 /* Get cached copy if it exists. */
7300 if (elf_section_data (isec)->this_hdr.contents != NULL)
7301 contents = elf_section_data (isec)->this_hdr.contents;
7302 /* Go get them off disk. */
7303 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7307 /* Fix up the existing branch to hit the trampoline. */
7308 hit_addr = contents + roff;
7312 case R_PPC_LOCAL24PC:
7313 case R_PPC_PLTREL24:
7314 t0 = bfd_get_32 (abfd, hit_addr);
7316 t0 |= val & 0x3fffffc;
7317 bfd_put_32 (abfd, t0, hit_addr);
7321 case R_PPC_REL14_BRTAKEN:
7322 case R_PPC_REL14_BRNTAKEN:
7323 t0 = bfd_get_32 (abfd, hit_addr);
7326 bfd_put_32 (abfd, t0, hit_addr);
7331 while (branch_fixups != NULL)
7333 struct one_branch_fixup *f = branch_fixups;
7334 branch_fixups = branch_fixups->next;
7339 workaround_change = FALSE;
7341 if (htab->params->ppc476_workaround
7342 && (!bfd_link_relocatable (link_info)
7343 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7345 bfd_vma addr, end_addr;
7346 unsigned int crossings;
7347 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7349 addr = isec->output_section->vma + isec->output_offset;
7350 end_addr = addr + trampoff;
7352 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7355 /* Keep space aligned, to ensure the patch code itself does
7356 not cross a page. Don't decrease size calculated on a
7357 previous pass as otherwise we might never settle on a layout. */
7358 newsize = 15 - ((end_addr - 1) & 15);
7359 newsize += crossings * 16;
7360 if (relax_info->workaround_size < newsize)
7362 relax_info->workaround_size = newsize;
7363 workaround_change = TRUE;
7365 /* Ensure relocate_section is called. */
7366 isec->flags |= SEC_RELOC;
7368 newsize = trampoff + relax_info->workaround_size;
7371 if (htab->params->pic_fixup > 0)
7373 picfixup_size -= relax_info->picfixup_size;
7374 if (picfixup_size != 0)
7375 relax_info->picfixup_size += picfixup_size;
7376 newsize += relax_info->picfixup_size;
7379 if (changes != 0 || picfixup_size != 0 || workaround_change)
7380 isec->size = newsize;
7383 && symtab_hdr->contents != (unsigned char *) isymbuf)
7385 if (! link_info->keep_memory)
7389 /* Cache the symbols for elf_link_input_bfd. */
7390 symtab_hdr->contents = (unsigned char *) isymbuf;
7394 if (contents != NULL
7395 && elf_section_data (isec)->this_hdr.contents != contents)
7397 if (!changes && !link_info->keep_memory)
7401 /* Cache the section contents for elf_link_input_bfd. */
7402 elf_section_data (isec)->this_hdr.contents = contents;
7406 changes += picfixup_size;
7409 /* Append sufficient NOP relocs so we can write out relocation
7410 information for the trampolines. */
7411 Elf_Internal_Shdr *rel_hdr;
7412 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7413 * sizeof (*new_relocs));
7418 memcpy (new_relocs, internal_relocs,
7419 isec->reloc_count * sizeof (*new_relocs));
7420 for (ix = changes; ix--;)
7422 irel = new_relocs + ix + isec->reloc_count;
7424 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7426 if (internal_relocs != elf_section_data (isec)->relocs)
7427 free (internal_relocs);
7428 elf_section_data (isec)->relocs = new_relocs;
7429 isec->reloc_count += changes;
7430 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7431 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7433 else if (internal_relocs != NULL
7434 && elf_section_data (isec)->relocs != internal_relocs)
7435 free (internal_relocs);
7437 *again = changes != 0 || workaround_change;
7441 while (branch_fixups != NULL)
7443 struct one_branch_fixup *f = branch_fixups;
7444 branch_fixups = branch_fixups->next;
7447 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7449 if (contents != NULL
7450 && elf_section_data (isec)->this_hdr.contents != contents)
7452 if (internal_relocs != NULL
7453 && elf_section_data (isec)->relocs != internal_relocs)
7454 free (internal_relocs);
7458 /* What to do when ld finds relocations against symbols defined in
7459 discarded sections. */
7462 ppc_elf_action_discarded (asection *sec)
7464 if (strcmp (".fixup", sec->name) == 0)
7467 if (strcmp (".got2", sec->name) == 0)
7470 return _bfd_elf_default_action_discarded (sec);
7473 /* Fill in the address for a pointer generated in a linker section. */
7476 elf_finish_pointer_linker_section (bfd *input_bfd,
7477 elf_linker_section_t *lsect,
7478 struct elf_link_hash_entry *h,
7480 const Elf_Internal_Rela *rel)
7482 elf_linker_section_pointers_t *linker_section_ptr;
7484 BFD_ASSERT (lsect != NULL);
7488 /* Handle global symbol. */
7489 struct ppc_elf_link_hash_entry *eh;
7491 eh = (struct ppc_elf_link_hash_entry *) h;
7492 BFD_ASSERT (eh->elf.def_regular);
7493 linker_section_ptr = eh->linker_section_pointer;
7497 /* Handle local symbol. */
7498 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7500 BFD_ASSERT (is_ppc_elf (input_bfd));
7501 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7502 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7505 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7508 BFD_ASSERT (linker_section_ptr != NULL);
7510 /* Offset will always be a multiple of four, so use the bottom bit
7511 as a "written" flag. */
7512 if ((linker_section_ptr->offset & 1) == 0)
7514 bfd_put_32 (lsect->section->owner,
7515 relocation + linker_section_ptr->addend,
7516 lsect->section->contents + linker_section_ptr->offset);
7517 linker_section_ptr->offset += 1;
7520 relocation = (lsect->section->output_section->vma
7521 + lsect->section->output_offset
7522 + linker_section_ptr->offset - 1
7523 - SYM_VAL (lsect->sym));
7527 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7528 lsect->name, (long) relocation, (long) relocation);
7534 #define PPC_LO(v) ((v) & 0xffff)
7535 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7536 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7539 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7540 struct bfd_link_info *info)
7542 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7543 bfd *output_bfd = info->output_bfd;
7546 plt = ((ent->plt.offset & ~1)
7547 + plt_sec->output_section->vma
7548 + plt_sec->output_offset);
7550 if (bfd_link_pic (info))
7554 if (ent->addend >= 32768)
7556 + ent->sec->output_section->vma
7557 + ent->sec->output_offset);
7558 else if (htab->elf.hgot != NULL)
7559 got = SYM_VAL (htab->elf.hgot);
7563 if (plt + 0x8000 < 0x10000)
7565 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7567 bfd_put_32 (output_bfd, MTCTR_11, p);
7569 bfd_put_32 (output_bfd, BCTR, p);
7571 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7576 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7578 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7580 bfd_put_32 (output_bfd, MTCTR_11, p);
7582 bfd_put_32 (output_bfd, BCTR, p);
7588 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7590 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7592 bfd_put_32 (output_bfd, MTCTR_11, p);
7594 bfd_put_32 (output_bfd, BCTR, p);
7599 /* Return true if symbol is defined statically. */
7602 is_static_defined (struct elf_link_hash_entry *h)
7604 return ((h->root.type == bfd_link_hash_defined
7605 || h->root.type == bfd_link_hash_defweak)
7606 && h->root.u.def.section != NULL
7607 && h->root.u.def.section->output_section != NULL);
7610 /* If INSN is an opcode that may be used with an @tls operand, return
7611 the transformed insn for TLS optimisation, otherwise return 0. If
7612 REG is non-zero only match an insn with RB or RA equal to REG. */
7615 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7619 if ((insn & (0x3f << 26)) != 31 << 26)
7622 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7623 rtra = insn & ((1 << 26) - (1 << 16));
7624 else if (((insn >> 16) & 0x1f) == reg)
7625 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7629 if ((insn & (0x3ff << 1)) == 266 << 1)
7632 else if ((insn & (0x1f << 1)) == 23 << 1
7633 && ((insn & (0x1f << 6)) < 14 << 6
7634 || ((insn & (0x1f << 6)) >= 16 << 6
7635 && (insn & (0x1f << 6)) < 24 << 6)))
7636 /* load and store indexed -> dform. */
7637 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7638 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7639 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7640 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7641 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7643 insn = (58 << 26) | 2;
7650 /* If INSN is an opcode that may be used with an @tprel operand, return
7651 the transformed insn for an undefined weak symbol, ie. with the
7652 thread pointer REG operand removed. Otherwise return 0. */
7655 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7657 if ((insn & (0x1f << 16)) == reg << 16
7658 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7659 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7660 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7661 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7662 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7663 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7664 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7665 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7666 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7667 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7668 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7669 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7670 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7671 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7672 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7673 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7675 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7676 && ((insn & 3) == 0 || (insn & 3) == 3))))
7678 insn &= ~(0x1f << 16);
7680 else if ((insn & (0x1f << 21)) == reg << 21
7681 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7682 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7683 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7685 insn &= ~(0x1f << 21);
7686 insn |= (insn & (0x1f << 16)) << 5;
7687 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7688 insn -= 2 >> 26; /* convert to ori,oris */
7696 is_insn_ds_form (unsigned int insn)
7698 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7699 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7700 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7701 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7705 is_insn_dq_form (unsigned int insn)
7707 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7708 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7709 && (insn & 3) == 1));
7712 /* The RELOCATE_SECTION function is called by the ELF backend linker
7713 to handle the relocations for a section.
7715 The relocs are always passed as Rela structures; if the section
7716 actually uses Rel structures, the r_addend field will always be
7719 This function is responsible for adjust the section contents as
7720 necessary, and (if using Rela relocs and generating a
7721 relocatable output file) adjusting the reloc addend as
7724 This function does not have to worry about setting the reloc
7725 address or the reloc symbol index.
7727 LOCAL_SYMS is a pointer to the swapped in local symbols.
7729 LOCAL_SECTIONS is an array giving the section in the input file
7730 corresponding to the st_shndx field of each local symbol.
7732 The global hash table entry for the global symbols can be found
7733 via elf_sym_hashes (input_bfd).
7735 When generating relocatable output, this function must handle
7736 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7737 going to be the section symbol corresponding to the output
7738 section, which means that the addend must be adjusted
7742 ppc_elf_relocate_section (bfd *output_bfd,
7743 struct bfd_link_info *info,
7745 asection *input_section,
7747 Elf_Internal_Rela *relocs,
7748 Elf_Internal_Sym *local_syms,
7749 asection **local_sections)
7751 Elf_Internal_Shdr *symtab_hdr;
7752 struct elf_link_hash_entry **sym_hashes;
7753 struct ppc_elf_link_hash_table *htab;
7754 Elf_Internal_Rela *rel;
7755 Elf_Internal_Rela *wrel;
7756 Elf_Internal_Rela *relend;
7757 Elf_Internal_Rela outrel;
7759 bfd_vma *local_got_offsets;
7760 bfd_boolean ret = TRUE;
7761 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7762 bfd_boolean is_vxworks_tls;
7763 unsigned int picfixup_size = 0;
7764 struct ppc_elf_relax_info *relax_info = NULL;
7767 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7768 "%ld relocations%s",
7769 input_bfd, input_section,
7770 (long) input_section->reloc_count,
7771 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7774 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7776 /* Initialize howto table if not already done. */
7777 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7778 ppc_elf_howto_init ();
7780 htab = ppc_elf_hash_table (info);
7781 local_got_offsets = elf_local_got_offsets (input_bfd);
7782 symtab_hdr = &elf_symtab_hdr (input_bfd);
7783 sym_hashes = elf_sym_hashes (input_bfd);
7784 /* We have to handle relocations in vxworks .tls_vars sections
7785 specially, because the dynamic loader is 'weird'. */
7786 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7787 && !strcmp (input_section->output_section->name,
7789 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7790 relax_info = elf_section_data (input_section)->sec_info;
7791 rel = wrel = relocs;
7792 relend = relocs + input_section->reloc_count;
7793 for (; rel < relend; wrel++, rel++)
7795 enum elf_ppc_reloc_type r_type;
7797 bfd_reloc_status_type r;
7798 Elf_Internal_Sym *sym;
7800 struct elf_link_hash_entry *h;
7801 const char *sym_name;
7802 reloc_howto_type *howto;
7803 unsigned long r_symndx;
7805 bfd_vma branch_bit, from;
7806 bfd_boolean unresolved_reloc;
7808 unsigned int tls_type, tls_mask, tls_gd;
7809 struct plt_entry **ifunc;
7810 struct reloc_howto_struct alt_howto;
7813 r_type = ELF32_R_TYPE (rel->r_info);
7817 unresolved_reloc = FALSE;
7819 r_symndx = ELF32_R_SYM (rel->r_info);
7821 if (r_symndx < symtab_hdr->sh_info)
7823 sym = local_syms + r_symndx;
7824 sec = local_sections[r_symndx];
7825 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7827 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7831 bfd_boolean ignored;
7833 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7834 r_symndx, symtab_hdr, sym_hashes,
7836 unresolved_reloc, warned, ignored);
7838 sym_name = h->root.root.string;
7841 if (sec != NULL && discarded_section (sec))
7843 /* For relocs against symbols from removed linkonce sections,
7844 or sections discarded by a linker script, we just want the
7845 section contents zeroed. Avoid any special processing. */
7847 if (r_type < R_PPC_max)
7848 howto = ppc_elf_howto_table[r_type];
7850 _bfd_clear_contents (howto, input_bfd, input_section,
7851 contents + rel->r_offset);
7852 wrel->r_offset = rel->r_offset;
7856 /* For ld -r, remove relocations in debug sections against
7857 sections defined in discarded sections. Not done for
7858 non-debug to preserve relocs in .eh_frame which the
7859 eh_frame editing code expects to be present. */
7860 if (bfd_link_relocatable (info)
7861 && (input_section->flags & SEC_DEBUGGING))
7867 if (bfd_link_relocatable (info))
7870 && r_type == R_PPC_PLTREL24
7871 && rel->r_addend != 0)
7873 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7874 addend specifies the GOT pointer offset within .got2. */
7875 rel->r_addend += got2->output_offset;
7877 if (r_type != R_PPC_RELAX_PLT
7878 && r_type != R_PPC_RELAX_PLTREL24
7879 && r_type != R_PPC_RELAX)
7883 /* TLS optimizations. Replace instruction sequences and relocs
7884 based on information we collected in tls_optimize. We edit
7885 RELOCS so that --emit-relocs will output something sensible
7886 for the final instruction stream. */
7890 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7891 else if (local_got_offsets != NULL)
7893 struct plt_entry **local_plt;
7896 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7897 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7898 tls_mask = lgot_masks[r_symndx];
7901 /* Ensure reloc mapping code below stays sane. */
7902 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7903 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7904 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7905 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7906 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7907 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7908 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7909 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7916 case R_PPC_GOT_TPREL16:
7917 case R_PPC_GOT_TPREL16_LO:
7918 if ((tls_mask & TLS_TLS) != 0
7919 && (tls_mask & TLS_TPREL) == 0)
7923 insn = bfd_get_32 (output_bfd,
7924 contents + rel->r_offset - d_offset);
7926 insn |= 0x3c020000; /* addis 0,2,0 */
7927 bfd_put_32 (output_bfd, insn,
7928 contents + rel->r_offset - d_offset);
7929 r_type = R_PPC_TPREL16_HA;
7930 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7935 if ((tls_mask & TLS_TLS) != 0
7936 && (tls_mask & TLS_TPREL) == 0)
7940 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7941 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7944 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7945 r_type = R_PPC_TPREL16_LO;
7946 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7948 /* Was PPC_TLS which sits on insn boundary, now
7949 PPC_TPREL16_LO which is at low-order half-word. */
7950 rel->r_offset += d_offset;
7954 case R_PPC_GOT_TLSGD16_HI:
7955 case R_PPC_GOT_TLSGD16_HA:
7956 tls_gd = TLS_TPRELGD;
7957 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7961 case R_PPC_GOT_TLSLD16_HI:
7962 case R_PPC_GOT_TLSLD16_HA:
7963 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7966 if ((tls_mask & tls_gd) != 0)
7967 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7968 + R_PPC_GOT_TPREL16);
7971 rel->r_offset -= d_offset;
7972 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7973 r_type = R_PPC_NONE;
7975 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7979 case R_PPC_GOT_TLSGD16:
7980 case R_PPC_GOT_TLSGD16_LO:
7981 tls_gd = TLS_TPRELGD;
7982 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7986 case R_PPC_GOT_TLSLD16:
7987 case R_PPC_GOT_TLSLD16_LO:
7988 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7990 unsigned int insn1, insn2;
7994 offset = (bfd_vma) -1;
7995 /* If not using the newer R_PPC_TLSGD/LD to mark
7996 __tls_get_addr calls, we must trust that the call
7997 stays with its arg setup insns, ie. that the next
7998 reloc is the __tls_get_addr call associated with
7999 the current reloc. Edit both insns. */
8000 if (input_section->has_tls_get_addr_call
8002 && branch_reloc_hash_match (input_bfd, rel + 1,
8003 htab->tls_get_addr))
8004 offset = rel[1].r_offset;
8005 /* We read the low GOT_TLS insn because we need to keep
8006 the destination reg. It may be something other than
8007 the usual r3, and moved to r3 before the call by
8008 intervening code. */
8009 insn1 = bfd_get_32 (output_bfd,
8010 contents + rel->r_offset - d_offset);
8011 if ((tls_mask & tls_gd) != 0)
8014 insn1 &= (0x1f << 21) | (0x1f << 16);
8015 insn1 |= 32 << 26; /* lwz */
8016 if (offset != (bfd_vma) -1)
8018 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8019 insn2 = 0x7c631214; /* add 3,3,2 */
8020 bfd_put_32 (output_bfd, insn2, contents + offset);
8022 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8023 + R_PPC_GOT_TPREL16);
8024 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8029 insn1 &= 0x1f << 21;
8030 insn1 |= 0x3c020000; /* addis r,2,0 */
8033 /* Was an LD reloc. */
8035 r_symndx < symtab_hdr->sh_info;
8037 if (local_sections[r_symndx] == sec)
8039 if (r_symndx >= symtab_hdr->sh_info)
8040 r_symndx = STN_UNDEF;
8041 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8042 if (r_symndx != STN_UNDEF)
8043 rel->r_addend -= (local_syms[r_symndx].st_value
8044 + sec->output_offset
8045 + sec->output_section->vma);
8047 r_type = R_PPC_TPREL16_HA;
8048 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8049 if (offset != (bfd_vma) -1)
8051 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8052 rel[1].r_offset = offset + d_offset;
8053 rel[1].r_addend = rel->r_addend;
8054 insn2 = 0x38630000; /* addi 3,3,0 */
8055 bfd_put_32 (output_bfd, insn2, contents + offset);
8058 bfd_put_32 (output_bfd, insn1,
8059 contents + rel->r_offset - d_offset);
8062 /* We changed the symbol on an LD reloc. Start over
8063 in order to get h, sym, sec etc. right. */
8070 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8073 bfd_vma offset = rel->r_offset;
8075 if ((tls_mask & TLS_TPRELGD) != 0)
8078 r_type = R_PPC_NONE;
8079 insn2 = 0x7c631214; /* add 3,3,2 */
8084 r_type = R_PPC_TPREL16_LO;
8085 rel->r_offset += d_offset;
8086 insn2 = 0x38630000; /* addi 3,3,0 */
8088 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8089 bfd_put_32 (output_bfd, insn2, contents + offset);
8090 /* Zap the reloc on the _tls_get_addr call too. */
8091 BFD_ASSERT (offset == rel[1].r_offset);
8092 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8097 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8102 r_symndx < symtab_hdr->sh_info;
8104 if (local_sections[r_symndx] == sec)
8106 if (r_symndx >= symtab_hdr->sh_info)
8107 r_symndx = STN_UNDEF;
8108 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8109 if (r_symndx != STN_UNDEF)
8110 rel->r_addend -= (local_syms[r_symndx].st_value
8111 + sec->output_offset
8112 + sec->output_section->vma);
8114 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8115 rel->r_offset += d_offset;
8116 insn2 = 0x38630000; /* addi 3,3,0 */
8117 bfd_put_32 (output_bfd, insn2,
8118 contents + rel->r_offset - d_offset);
8119 /* Zap the reloc on the _tls_get_addr call too. */
8120 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8121 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8127 /* Handle other relocations that tweak non-addend part of insn. */
8134 /* Branch taken prediction relocations. */
8135 case R_PPC_ADDR14_BRTAKEN:
8136 case R_PPC_REL14_BRTAKEN:
8137 branch_bit = BRANCH_PREDICT_BIT;
8140 /* Branch not taken prediction relocations. */
8141 case R_PPC_ADDR14_BRNTAKEN:
8142 case R_PPC_REL14_BRNTAKEN:
8146 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8147 insn &= ~BRANCH_PREDICT_BIT;
8150 from = (rel->r_offset
8151 + input_section->output_offset
8152 + input_section->output_section->vma);
8154 /* Invert 'y' bit if not the default. */
8155 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8156 insn ^= BRANCH_PREDICT_BIT;
8158 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8163 if (ELIMINATE_COPY_RELOCS
8167 && ppc_elf_hash_entry (h)->has_addr16_ha
8168 && ppc_elf_hash_entry (h)->has_addr16_lo
8169 && htab->params->pic_fixup > 0)
8171 /* Convert lis;addi or lis;load/store accessing a protected
8172 variable defined in a shared library to PIC. */
8175 if (r_type == R_PPC_ADDR16_HA)
8177 insn = bfd_get_32 (output_bfd,
8178 contents + rel->r_offset - d_offset);
8179 if ((insn & (0x3f << 26)) == (15u << 26)
8180 && (insn & (0x1f << 16)) == 0 /* lis */)
8186 p = (contents + input_section->size
8187 - relax_info->workaround_size
8188 - relax_info->picfixup_size
8190 off = (p - contents) - (rel->r_offset - d_offset);
8191 if (off > 0x1fffffc || (off & 3) != 0)
8192 info->callbacks->einfo
8193 (_("%P: %H: fixup branch overflow\n"),
8194 input_bfd, input_section, rel->r_offset);
8196 bfd_put_32 (output_bfd, B | off,
8197 contents + rel->r_offset - d_offset);
8198 got_addr = (htab->got->output_section->vma
8199 + htab->got->output_offset
8200 + (h->got.offset & ~1));
8201 wrel->r_offset = (p - contents) + d_offset;
8202 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8203 wrel->r_addend = got_addr;
8205 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8206 bfd_put_32 (output_bfd, insn, p);
8208 /* Convert lis to lwz, loading address from GOT. */
8210 insn ^= (32u ^ 15u) << 26;
8211 insn |= (insn & (0x1f << 21)) >> 5;
8212 insn |= got_addr & 0xffff;
8213 bfd_put_32 (output_bfd, insn, p + 4);
8215 bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8216 picfixup_size += 12;
8218 /* Use one of the spare relocs, so --emit-relocs
8219 output is reasonable. */
8220 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8222 rel->r_offset = wrel[-1].r_offset + 4;
8223 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8224 rel->r_addend = wrel[-1].r_addend;
8226 /* Continue on as if we had a got reloc, to output
8228 r_type = R_PPC_GOT16_LO;
8231 info->callbacks->einfo
8232 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8233 input_bfd, input_section, rel->r_offset,
8234 "R_PPC_ADDR16_HA", insn);
8236 else if (r_type == R_PPC_ADDR16_LO)
8238 insn = bfd_get_32 (output_bfd,
8239 contents + rel->r_offset - d_offset);
8240 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8241 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8242 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8243 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8244 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8245 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8246 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8247 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8248 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8249 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8250 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8251 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8252 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8253 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8254 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8256 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8257 && ((insn & 3) == 0 || (insn & 3) == 3)))
8259 /* Arrange to apply the reloc addend, if any. */
8261 unresolved_reloc = FALSE;
8262 rel->r_info = ELF32_R_INFO (0, r_type);
8265 info->callbacks->einfo
8266 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8267 input_bfd, input_section, rel->r_offset,
8268 "R_PPC_ADDR16_LO", insn);
8273 if (!htab->is_vxworks)
8275 struct plt_entry *ent;
8279 if (h->type == STT_GNU_IFUNC)
8280 ifunc = &h->plt.plist;
8282 else if (local_got_offsets != NULL
8283 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8285 struct plt_entry **local_plt;
8287 local_plt = (struct plt_entry **) (local_got_offsets
8288 + symtab_hdr->sh_info);
8289 ifunc = local_plt + r_symndx;
8294 && (!bfd_link_pic (info)
8295 || is_branch_reloc (r_type)))
8298 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8299 addend = rel->r_addend;
8300 ent = find_plt_ent (ifunc, got2, addend);
8304 if (bfd_link_pic (info)
8306 && htab->plt_type != PLT_NEW
8307 && (!htab->elf.dynamic_sections_created
8309 || h->dynindx == -1))
8311 /* Uh oh, we are going to create a pic glink stub
8312 for an ifunc (here for h == NULL and later in
8313 finish_dynamic_symbol for h != NULL), and
8314 apparently are using code compiled with
8315 -mbss-plt. The difficulty is that -mbss-plt code
8316 gives no indication via a magic PLTREL24 addend
8317 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8318 is pointing into a .got2 section (and how far
8320 info->callbacks->einfo
8321 (_("%X%P: %H: unsupported bss-plt -fPIC ifunc %s\n"),
8322 input_bfd, input_section, rel->r_offset, sym_name);
8324 if (h == NULL && (ent->plt.offset & 1) == 0)
8326 Elf_Internal_Rela rela;
8329 rela.r_offset = (htab->iplt->output_section->vma
8330 + htab->iplt->output_offset
8332 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8333 rela.r_addend = relocation;
8334 loc = htab->reliplt->contents;
8335 loc += (htab->reliplt->reloc_count++
8336 * sizeof (Elf32_External_Rela));
8337 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8339 ent->plt.offset |= 1;
8341 if (h == NULL && (ent->glink_offset & 1) == 0)
8343 unsigned char *p = ((unsigned char *) htab->glink->contents
8344 + ent->glink_offset);
8345 write_glink_stub (ent, htab->iplt, p, info);
8346 ent->glink_offset |= 1;
8349 unresolved_reloc = FALSE;
8350 if (htab->plt_type == PLT_NEW
8351 || !htab->elf.dynamic_sections_created
8353 || h->dynindx == -1)
8354 relocation = (htab->glink->output_section->vma
8355 + htab->glink->output_offset
8356 + (ent->glink_offset & ~1));
8358 relocation = (htab->plt->output_section->vma
8359 + htab->plt->output_offset
8364 addend = rel->r_addend;
8367 if (r_type < R_PPC_max)
8368 howto = ppc_elf_howto_table[r_type];
8372 info->callbacks->einfo
8373 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8374 input_bfd, (int) r_type, sym_name);
8376 bfd_set_error (bfd_error_bad_value);
8384 case R_PPC_EMB_MRKREF:
8385 case R_PPC_GNU_VTINHERIT:
8386 case R_PPC_GNU_VTENTRY:
8389 /* GOT16 relocations. Like an ADDR16 using the symbol's
8390 address in the GOT as relocation value instead of the
8391 symbol's value itself. Also, create a GOT entry for the
8392 symbol and put the symbol value there. */
8393 case R_PPC_GOT_TLSGD16:
8394 case R_PPC_GOT_TLSGD16_LO:
8395 case R_PPC_GOT_TLSGD16_HI:
8396 case R_PPC_GOT_TLSGD16_HA:
8397 tls_type = TLS_TLS | TLS_GD;
8400 case R_PPC_GOT_TLSLD16:
8401 case R_PPC_GOT_TLSLD16_LO:
8402 case R_PPC_GOT_TLSLD16_HI:
8403 case R_PPC_GOT_TLSLD16_HA:
8404 tls_type = TLS_TLS | TLS_LD;
8407 case R_PPC_GOT_TPREL16:
8408 case R_PPC_GOT_TPREL16_LO:
8409 case R_PPC_GOT_TPREL16_HI:
8410 case R_PPC_GOT_TPREL16_HA:
8411 tls_type = TLS_TLS | TLS_TPREL;
8414 case R_PPC_GOT_DTPREL16:
8415 case R_PPC_GOT_DTPREL16_LO:
8416 case R_PPC_GOT_DTPREL16_HI:
8417 case R_PPC_GOT_DTPREL16_HA:
8418 tls_type = TLS_TLS | TLS_DTPREL;
8422 case R_PPC_GOT16_LO:
8423 case R_PPC_GOT16_HI:
8424 case R_PPC_GOT16_HA:
8428 /* Relocation is to the entry for this symbol in the global
8434 if (htab->got == NULL)
8438 if (tls_type == (TLS_TLS | TLS_LD)
8440 || !h->def_dynamic))
8441 offp = &htab->tlsld_got.offset;
8445 dyn = htab->elf.dynamic_sections_created;
8446 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8447 || (bfd_link_pic (info)
8448 && SYMBOL_REFERENCES_LOCAL (info, h)))
8449 /* This is actually a static link, or it is a
8450 -Bsymbolic link and the symbol is defined
8451 locally, or the symbol was forced to be local
8452 because of a version file. */
8456 BFD_ASSERT (h->dynindx != -1);
8458 unresolved_reloc = FALSE;
8460 offp = &h->got.offset;
8464 if (local_got_offsets == NULL)
8466 offp = &local_got_offsets[r_symndx];
8469 /* The offset must always be a multiple of 4. We use the
8470 least significant bit to record whether we have already
8471 processed this entry. */
8477 unsigned int tls_m = (tls_mask
8478 & (TLS_LD | TLS_GD | TLS_DTPREL
8479 | TLS_TPREL | TLS_TPRELGD));
8481 if (offp == &htab->tlsld_got.offset)
8487 /* We might have multiple got entries for this sym.
8488 Initialize them all. */
8493 if ((tls_m & TLS_LD) != 0)
8495 tls_ty = TLS_TLS | TLS_LD;
8498 else if ((tls_m & TLS_GD) != 0)
8500 tls_ty = TLS_TLS | TLS_GD;
8503 else if ((tls_m & TLS_DTPREL) != 0)
8505 tls_ty = TLS_TLS | TLS_DTPREL;
8506 tls_m &= ~TLS_DTPREL;
8508 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8510 tls_ty = TLS_TLS | TLS_TPREL;
8514 /* Generate relocs for the dynamic linker. */
8515 if ((bfd_link_pic (info) || indx != 0)
8516 && (offp == &htab->tlsld_got.offset
8518 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8519 || h->root.type != bfd_link_hash_undefweak))
8521 asection *rsec = htab->relgot;
8525 rsec = htab->reliplt;
8526 outrel.r_offset = (htab->got->output_section->vma
8527 + htab->got->output_offset
8529 outrel.r_addend = 0;
8530 if (tls_ty & (TLS_LD | TLS_GD))
8532 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8533 if (tls_ty == (TLS_TLS | TLS_GD))
8535 loc = rsec->contents;
8536 loc += (rsec->reloc_count++
8537 * sizeof (Elf32_External_Rela));
8538 bfd_elf32_swap_reloca_out (output_bfd,
8540 outrel.r_offset += 4;
8542 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8545 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8546 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8547 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8548 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8550 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8551 else if (ifunc != NULL)
8552 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8554 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8555 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8557 outrel.r_addend += relocation;
8558 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8560 if (htab->elf.tls_sec == NULL)
8561 outrel.r_addend = 0;
8563 outrel.r_addend -= htab->elf.tls_sec->vma;
8566 loc = rsec->contents;
8567 loc += (rsec->reloc_count++
8568 * sizeof (Elf32_External_Rela));
8569 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8572 /* Init the .got section contents if we're not
8573 emitting a reloc. */
8576 bfd_vma value = relocation;
8578 if (tls_ty == (TLS_TLS | TLS_LD))
8580 else if (tls_ty != 0)
8582 if (htab->elf.tls_sec == NULL)
8586 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8587 if (tls_ty == (TLS_TLS | TLS_TPREL))
8588 value += DTP_OFFSET - TP_OFFSET;
8591 if (tls_ty == (TLS_TLS | TLS_GD))
8593 bfd_put_32 (output_bfd, value,
8594 htab->got->contents + off + 4);
8598 bfd_put_32 (output_bfd, value,
8599 htab->got->contents + off);
8603 if (tls_ty & (TLS_LD | TLS_GD))
8612 if (off >= (bfd_vma) -2)
8615 if ((tls_type & TLS_TLS) != 0)
8617 if (tls_type != (TLS_TLS | TLS_LD))
8619 if ((tls_mask & TLS_LD) != 0
8621 || !h->def_dynamic))
8623 if (tls_type != (TLS_TLS | TLS_GD))
8625 if ((tls_mask & TLS_GD) != 0)
8627 if (tls_type != (TLS_TLS | TLS_DTPREL))
8629 if ((tls_mask & TLS_DTPREL) != 0)
8636 /* If here for a picfixup, we're done. */
8637 if (r_type != ELF32_R_TYPE (rel->r_info))
8640 relocation = (htab->got->output_section->vma
8641 + htab->got->output_offset
8643 - SYM_VAL (htab->elf.hgot));
8645 /* Addends on got relocations don't make much sense.
8646 x+off@got is actually x@got+off, and since the got is
8647 generated by a hash table traversal, the value in the
8648 got at entry m+n bears little relation to the entry m. */
8650 info->callbacks->einfo
8651 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8652 input_bfd, input_section, rel->r_offset,
8658 /* Relocations that need no special processing. */
8659 case R_PPC_LOCAL24PC:
8660 /* It makes no sense to point a local relocation
8661 at a symbol not in this object. */
8662 if (unresolved_reloc)
8664 (*info->callbacks->undefined_symbol) (info,
8665 h->root.root.string,
8672 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8674 /* @local on an ifunc does not really make sense since
8675 the ifunc resolver can take you anywhere. More
8676 seriously, calls to ifuncs must go through a plt call
8677 stub, and for pic the plt call stubs uses r30 to
8678 access the PLT. The problem is that a call that is
8679 local won't have the +32k reloc addend trick marking
8680 -fPIC code, so the linker won't know whether r30 is
8681 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8682 info->callbacks->einfo (_("%X%P: %H: @local call to ifunc %s\n"),
8683 input_bfd, input_section, rel->r_offset,
8684 h->root.root.string);
8688 case R_PPC_DTPREL16:
8689 case R_PPC_DTPREL16_LO:
8690 case R_PPC_DTPREL16_HI:
8691 case R_PPC_DTPREL16_HA:
8692 if (htab->elf.tls_sec != NULL)
8693 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8696 /* Relocations that may need to be propagated if this is a shared
8699 case R_PPC_TPREL16_LO:
8700 case R_PPC_TPREL16_HI:
8701 case R_PPC_TPREL16_HA:
8703 && h->root.type == bfd_link_hash_undefweak
8704 && h->dynindx == -1)
8706 /* Make this relocation against an undefined weak symbol
8707 resolve to zero. This is really just a tweak, since
8708 code using weak externs ought to check that they are
8709 defined before using them. */
8710 bfd_byte *p = contents + rel->r_offset - d_offset;
8711 unsigned int insn = bfd_get_32 (output_bfd, p);
8712 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8714 bfd_put_32 (output_bfd, insn, p);
8717 if (htab->elf.tls_sec != NULL)
8718 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8719 /* The TPREL16 relocs shouldn't really be used in shared
8720 libs as they will result in DT_TEXTREL being set, but
8721 support them anyway. */
8725 if (htab->elf.tls_sec != NULL)
8726 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8729 case R_PPC_DTPREL32:
8730 if (htab->elf.tls_sec != NULL)
8731 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8734 case R_PPC_DTPMOD32:
8740 case R_PPC_REL16_LO:
8741 case R_PPC_REL16_HI:
8742 case R_PPC_REL16_HA:
8743 case R_PPC_REL16DX_HA:
8747 if (h == NULL || h == htab->elf.hgot)
8753 case R_PPC_ADDR16_LO:
8754 case R_PPC_ADDR16_HI:
8755 case R_PPC_ADDR16_HA:
8760 case R_PPC_VLE_REL8:
8761 case R_PPC_VLE_REL15:
8762 case R_PPC_VLE_REL24:
8765 case R_PPC_REL14_BRTAKEN:
8766 case R_PPC_REL14_BRNTAKEN:
8767 /* If these relocations are not to a named symbol, they can be
8768 handled right here, no need to bother the dynamic linker. */
8769 if (SYMBOL_CALLS_LOCAL (info, h)
8770 || h == htab->elf.hgot)
8776 case R_PPC_ADDR14_BRTAKEN:
8777 case R_PPC_ADDR14_BRNTAKEN:
8778 if (h != NULL && !bfd_link_pic (info))
8783 if ((input_section->flags & SEC_ALLOC) == 0
8787 if ((bfd_link_pic (info)
8789 && ((h->root.type == bfd_link_hash_undefined
8790 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8791 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8792 || (h->root.type == bfd_link_hash_undefweak
8793 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8794 && (must_be_dyn_reloc (info, r_type)
8795 || !SYMBOL_CALLS_LOCAL (info, h)))
8796 || (ELIMINATE_COPY_RELOCS
8797 && !bfd_link_pic (info)
8802 && !(h->protected_def
8803 && ppc_elf_hash_entry (h)->has_addr16_ha
8804 && ppc_elf_hash_entry (h)->has_addr16_lo
8805 && htab->params->pic_fixup > 0)))
8811 fprintf (stderr, "ppc_elf_relocate_section needs to "
8812 "create relocation for %s\n",
8813 (h && h->root.root.string
8814 ? h->root.root.string : "<unknown>"));
8817 /* When generating a shared object, these relocations
8818 are copied into the output file to be resolved at run
8820 sreloc = elf_section_data (input_section)->sreloc;
8822 sreloc = htab->reliplt;
8827 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8830 if (outrel.r_offset == (bfd_vma) -1
8831 || outrel.r_offset == (bfd_vma) -2)
8832 skip = (int) outrel.r_offset;
8833 outrel.r_offset += (input_section->output_section->vma
8834 + input_section->output_offset);
8837 memset (&outrel, 0, sizeof outrel);
8839 && (h->root.type == bfd_link_hash_undefined
8840 || h->root.type == bfd_link_hash_undefweak))
8841 || !SYMBOL_REFERENCES_LOCAL (info, h))
8843 BFD_ASSERT (h->dynindx != -1);
8844 unresolved_reloc = FALSE;
8845 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8846 outrel.r_addend = rel->r_addend;
8850 outrel.r_addend = relocation + rel->r_addend;
8852 if (r_type != R_PPC_ADDR32)
8858 /* If we get here when building a static
8859 executable, then the libc startup function
8860 responsible for applying indirect function
8861 relocations is going to complain about
8863 If we get here when building a dynamic
8864 executable, it will be because we have
8865 a text relocation. The dynamic loader
8866 will set the text segment writable and
8867 non-executable to apply text relocations.
8868 So we'll segfault when trying to run the
8869 indirection function to resolve the reloc. */
8870 info->callbacks->einfo
8871 (_("%P: %H: relocation %s for indirect "
8872 "function %s unsupported\n"),
8873 input_bfd, input_section, rel->r_offset,
8878 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8880 else if (sec == NULL || sec->owner == NULL)
8882 bfd_set_error (bfd_error_bad_value);
8889 /* We are turning this relocation into one
8890 against a section symbol. It would be
8891 proper to subtract the symbol's value,
8892 osec->vma, from the emitted reloc addend,
8893 but ld.so expects buggy relocs.
8894 FIXME: Why not always use a zero index? */
8895 osec = sec->output_section;
8896 indx = elf_section_data (osec)->dynindx;
8899 osec = htab->elf.text_index_section;
8900 indx = elf_section_data (osec)->dynindx;
8902 BFD_ASSERT (indx != 0);
8905 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8906 indx, osec->name, osec->flags,
8907 h->root.root.string);
8911 outrel.r_info = ELF32_R_INFO (indx, r_type);
8913 else if (ifunc != NULL)
8914 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8916 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8919 loc = sreloc->contents;
8920 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8921 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8926 /* This reloc will be computed at runtime. We clear the memory
8927 so that it contains predictable value. */
8929 && ((input_section->flags & SEC_ALLOC) != 0
8930 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8932 relocation = howto->pc_relative ? outrel.r_offset : 0;
8939 case R_PPC_RELAX_PLT:
8940 case R_PPC_RELAX_PLTREL24:
8943 struct plt_entry *ent;
8944 bfd_vma got2_addend = 0;
8946 if (r_type == R_PPC_RELAX_PLTREL24)
8948 if (bfd_link_pic (info))
8949 got2_addend = addend;
8952 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8953 if (htab->plt_type == PLT_NEW)
8954 relocation = (htab->glink->output_section->vma
8955 + htab->glink->output_offset
8956 + ent->glink_offset);
8958 relocation = (htab->plt->output_section->vma
8959 + htab->plt->output_offset
8968 size_t insn_offset = rel->r_offset;
8971 if (bfd_link_pic (info))
8973 relocation -= (input_section->output_section->vma
8974 + input_section->output_offset
8975 + rel->r_offset - 4);
8976 stub = shared_stub_entry;
8977 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8978 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8979 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8981 size = ARRAY_SIZE (shared_stub_entry) - 3;
8986 size = ARRAY_SIZE (stub_entry);
8989 relocation += addend;
8990 if (bfd_link_relocatable (info))
8993 /* First insn is HA, second is LO. */
8995 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8996 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9000 insn |= relocation & 0xffff;
9001 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9009 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9013 /* Rewrite the reloc and convert one of the trailing nop
9014 relocs to describe this relocation. */
9015 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9016 /* The relocs are at the bottom 2 bytes */
9017 wrel->r_offset = rel->r_offset + d_offset;
9018 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9019 wrel->r_addend = rel->r_addend;
9020 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9022 wrel->r_offset += 4;
9023 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9027 /* Indirect .sdata relocation. */
9028 case R_PPC_EMB_SDAI16:
9029 BFD_ASSERT (htab->sdata[0].section != NULL);
9030 if (!is_static_defined (htab->sdata[0].sym))
9032 unresolved_reloc = TRUE;
9036 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9037 h, relocation, rel);
9041 /* Indirect .sdata2 relocation. */
9042 case R_PPC_EMB_SDA2I16:
9043 BFD_ASSERT (htab->sdata[1].section != NULL);
9044 if (!is_static_defined (htab->sdata[1].sym))
9046 unresolved_reloc = TRUE;
9050 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9051 h, relocation, rel);
9055 /* Handle the TOC16 reloc. We want to use the offset within the .got
9056 section, not the actual VMA. This is appropriate when generating
9057 an embedded ELF object, for which the .got section acts like the
9058 AIX .toc section. */
9059 case R_PPC_TOC16: /* phony GOT16 relocations */
9060 if (sec == NULL || sec->output_section == NULL)
9062 unresolved_reloc = TRUE;
9065 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9067 || strcmp (bfd_get_section_name (sec->owner, sec),
9070 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9073 case R_PPC_PLTREL24:
9074 if (h != NULL && ifunc == NULL)
9076 struct plt_entry *ent;
9078 ent = find_plt_ent (&h->plt.plist, got2,
9079 bfd_link_pic (info) ? addend : 0);
9081 || htab->plt == NULL)
9083 /* We didn't make a PLT entry for this symbol. This
9084 happens when statically linking PIC code, or when
9085 using -Bsymbolic. */
9089 /* Relocation is to the entry for this symbol in the
9090 procedure linkage table. */
9091 unresolved_reloc = FALSE;
9092 if (htab->plt_type == PLT_NEW)
9093 relocation = (htab->glink->output_section->vma
9094 + htab->glink->output_offset
9095 + ent->glink_offset);
9097 relocation = (htab->plt->output_section->vma
9098 + htab->plt->output_offset
9103 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9104 addend specifies the GOT pointer offset within .got2.
9105 Don't apply it to the relocation field. */
9109 /* Relocate against _SDA_BASE_. */
9110 case R_PPC_SDAREL16:
9113 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9116 || sec->output_section == NULL
9117 || !is_static_defined (sda))
9119 unresolved_reloc = TRUE;
9122 addend -= SYM_VAL (sda);
9124 name = bfd_get_section_name (output_bfd, sec->output_section);
9125 if (!(strcmp (name, ".sdata") == 0
9126 || strcmp (name, ".sbss") == 0))
9128 info->callbacks->einfo
9129 (_("%P: %B: the target (%s) of a %s relocation is "
9130 "in the wrong output section (%s)\n"),
9139 /* Relocate against _SDA2_BASE_. */
9140 case R_PPC_EMB_SDA2REL:
9143 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9146 || sec->output_section == NULL
9147 || !is_static_defined (sda))
9149 unresolved_reloc = TRUE;
9152 addend -= SYM_VAL (sda);
9154 name = bfd_get_section_name (output_bfd, sec->output_section);
9155 if (!(strcmp (name, ".sdata2") == 0
9156 || strcmp (name, ".sbss2") == 0))
9158 info->callbacks->einfo
9159 (_("%P: %B: the target (%s) of a %s relocation is "
9160 "in the wrong output section (%s)\n"),
9169 case R_PPC_VLE_LO16A:
9170 relocation = relocation + addend;
9171 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9172 relocation, split16a_type);
9175 case R_PPC_VLE_LO16D:
9176 relocation = relocation + addend;
9177 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9178 relocation, split16d_type);
9181 case R_PPC_VLE_HI16A:
9182 relocation = (relocation + addend) >> 16;
9183 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9184 relocation, split16a_type);
9187 case R_PPC_VLE_HI16D:
9188 relocation = (relocation + addend) >> 16;
9189 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9190 relocation, split16d_type);
9193 case R_PPC_VLE_HA16A:
9194 relocation = (relocation + addend + 0x8000) >> 16;
9195 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9196 relocation, split16a_type);
9199 case R_PPC_VLE_HA16D:
9200 relocation = (relocation + addend + 0x8000) >> 16;
9201 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9202 relocation, split16d_type);
9205 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9206 case R_PPC_EMB_SDA21:
9207 case R_PPC_VLE_SDA21:
9208 case R_PPC_EMB_RELSDA:
9209 case R_PPC_VLE_SDA21_LO:
9214 struct elf_link_hash_entry *sda = NULL;
9216 if (sec == NULL || sec->output_section == NULL)
9218 unresolved_reloc = TRUE;
9222 name = bfd_get_section_name (output_bfd, sec->output_section);
9223 if (strcmp (name, ".sdata") == 0
9224 || strcmp (name, ".sbss") == 0)
9227 sda = htab->sdata[0].sym;
9229 else if (strcmp (name, ".sdata2") == 0
9230 || strcmp (name, ".sbss2") == 0)
9233 sda = htab->sdata[1].sym;
9235 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9236 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9242 info->callbacks->einfo
9243 (_("%P: %B: the target (%s) of a %s relocation is "
9244 "in the wrong output section (%s)\n"),
9250 bfd_set_error (bfd_error_bad_value);
9257 if (!is_static_defined (sda))
9259 unresolved_reloc = TRUE;
9262 addend -= SYM_VAL (sda);
9265 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9267 && (r_type == R_PPC_VLE_SDA21
9268 || r_type == R_PPC_VLE_SDA21_LO))
9270 relocation = relocation + addend;
9273 /* Force e_li insn, keeping RT from original insn. */
9277 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9278 /* Top 4 bits of value to 17..20. */
9279 insn |= (relocation & 0xf0000) >> 5;
9280 /* Next 5 bits of the value to 11..15. */
9281 insn |= (relocation & 0xf800) << 5;
9282 /* And the final 11 bits of the value to bits 21 to 31. */
9283 insn |= relocation & 0x7ff;
9285 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9287 if (r_type == R_PPC_VLE_SDA21
9288 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9292 else if (r_type == R_PPC_EMB_SDA21
9293 || r_type == R_PPC_VLE_SDA21
9294 || r_type == R_PPC_VLE_SDA21_LO)
9296 /* Fill in register field. */
9297 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9299 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9303 case R_PPC_VLE_SDAREL_LO16A:
9304 case R_PPC_VLE_SDAREL_LO16D:
9305 case R_PPC_VLE_SDAREL_HI16A:
9306 case R_PPC_VLE_SDAREL_HI16D:
9307 case R_PPC_VLE_SDAREL_HA16A:
9308 case R_PPC_VLE_SDAREL_HA16D:
9313 struct elf_link_hash_entry *sda = NULL;
9315 if (sec == NULL || sec->output_section == NULL)
9317 unresolved_reloc = TRUE;
9321 name = bfd_get_section_name (output_bfd, sec->output_section);
9322 if (strcmp (name, ".sdata") == 0
9323 || strcmp (name, ".sbss") == 0)
9326 sda = htab->sdata[0].sym;
9328 else if (strcmp (name, ".sdata2") == 0
9329 || strcmp (name, ".sbss2") == 0)
9332 sda = htab->sdata[1].sym;
9336 (*_bfd_error_handler)
9337 (_("%B: the target (%s) of a %s relocation is "
9338 "in the wrong output section (%s)"),
9344 bfd_set_error (bfd_error_bad_value);
9351 if (!is_static_defined (sda))
9353 unresolved_reloc = TRUE;
9358 value = (sda->root.u.def.section->output_section->vma
9359 + sda->root.u.def.section->output_offset
9362 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9363 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9364 value, split16a_type);
9365 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9366 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9367 value, split16d_type);
9368 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9370 value = value >> 16;
9371 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9372 value, split16a_type);
9374 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9376 value = value >> 16;
9377 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9378 value, split16d_type);
9380 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9382 value = (value + 0x8000) >> 16;
9383 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9384 value, split16a_type);
9386 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9388 value = (value + 0x8000) >> 16;
9389 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9390 value, split16d_type);
9395 /* Relocate against the beginning of the section. */
9397 case R_PPC_SECTOFF_LO:
9398 case R_PPC_SECTOFF_HI:
9399 case R_PPC_SECTOFF_HA:
9400 if (sec == NULL || sec->output_section == NULL)
9402 unresolved_reloc = TRUE;
9405 addend -= sec->output_section->vma;
9408 /* Negative relocations. */
9409 case R_PPC_EMB_NADDR32:
9410 case R_PPC_EMB_NADDR16:
9411 case R_PPC_EMB_NADDR16_LO:
9412 case R_PPC_EMB_NADDR16_HI:
9413 case R_PPC_EMB_NADDR16_HA:
9414 addend -= 2 * relocation;
9418 case R_PPC_GLOB_DAT:
9419 case R_PPC_JMP_SLOT:
9420 case R_PPC_RELATIVE:
9421 case R_PPC_IRELATIVE:
9423 case R_PPC_PLTREL32:
9424 case R_PPC_PLT16_LO:
9425 case R_PPC_PLT16_HI:
9426 case R_PPC_PLT16_HA:
9428 case R_PPC_EMB_RELSEC16:
9429 case R_PPC_EMB_RELST_LO:
9430 case R_PPC_EMB_RELST_HI:
9431 case R_PPC_EMB_RELST_HA:
9432 case R_PPC_EMB_BIT_FLD:
9433 info->callbacks->einfo
9434 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9439 bfd_set_error (bfd_error_invalid_operation);
9444 /* Do any further special processing. */
9450 case R_PPC_ADDR16_HA:
9451 case R_PPC_REL16_HA:
9452 case R_PPC_REL16DX_HA:
9453 case R_PPC_SECTOFF_HA:
9454 case R_PPC_TPREL16_HA:
9455 case R_PPC_DTPREL16_HA:
9456 case R_PPC_EMB_NADDR16_HA:
9457 case R_PPC_EMB_RELST_HA:
9458 /* It's just possible that this symbol is a weak symbol
9459 that's not actually defined anywhere. In that case,
9460 'sec' would be NULL, and we should leave the symbol
9461 alone (it will be set to zero elsewhere in the link). */
9466 case R_PPC_PLT16_HA:
9467 case R_PPC_GOT16_HA:
9468 case R_PPC_GOT_TLSGD16_HA:
9469 case R_PPC_GOT_TLSLD16_HA:
9470 case R_PPC_GOT_TPREL16_HA:
9471 case R_PPC_GOT_DTPREL16_HA:
9472 /* Add 0x10000 if sign bit in 0:15 is set.
9473 Bits 0:15 are not used. */
9478 case R_PPC_ADDR16_LO:
9480 case R_PPC_GOT16_LO:
9481 case R_PPC_SDAREL16:
9483 case R_PPC_SECTOFF_LO:
9484 case R_PPC_DTPREL16:
9485 case R_PPC_DTPREL16_LO:
9487 case R_PPC_TPREL16_LO:
9488 case R_PPC_GOT_TLSGD16:
9489 case R_PPC_GOT_TLSGD16_LO:
9490 case R_PPC_GOT_TLSLD16:
9491 case R_PPC_GOT_TLSLD16_LO:
9492 case R_PPC_GOT_DTPREL16:
9493 case R_PPC_GOT_DTPREL16_LO:
9494 case R_PPC_GOT_TPREL16:
9495 case R_PPC_GOT_TPREL16_LO:
9497 /* The 32-bit ABI lacks proper relocations to deal with
9498 certain 64-bit instructions. Prevent damage to bits
9499 that make up part of the insn opcode. */
9500 unsigned int insn, mask, lobit;
9502 insn = bfd_get_32 (output_bfd,
9503 contents + rel->r_offset - d_offset);
9505 if (is_insn_ds_form (insn))
9507 else if (is_insn_dq_form (insn))
9511 relocation += addend;
9512 addend = insn & mask;
9513 lobit = mask & relocation;
9516 relocation ^= lobit;
9517 info->callbacks->einfo
9518 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9519 input_bfd, input_section, rel->r_offset,
9520 howto->name, sym_name, mask + 1);
9521 bfd_set_error (bfd_error_bad_value);
9529 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9530 "offset = %ld, addend = %ld\n",
9535 (long) rel->r_offset,
9539 if (unresolved_reloc
9540 && !((input_section->flags & SEC_DEBUGGING) != 0
9542 && _bfd_elf_section_offset (output_bfd, info, input_section,
9543 rel->r_offset) != (bfd_vma) -1)
9545 info->callbacks->einfo
9546 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9547 input_bfd, input_section, rel->r_offset,
9553 /* 16-bit fields in insns mostly have signed values, but a
9554 few insns have 16-bit unsigned values. Really, we should
9555 have different reloc types. */
9556 if (howto->complain_on_overflow != complain_overflow_dont
9557 && howto->dst_mask == 0xffff
9558 && (input_section->flags & SEC_CODE) != 0)
9560 enum complain_overflow complain = complain_overflow_signed;
9562 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9566 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9567 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9568 complain = complain_overflow_bitfield;
9569 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9570 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9571 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9572 complain = complain_overflow_unsigned;
9574 if (howto->complain_on_overflow != complain)
9577 alt_howto.complain_on_overflow = complain;
9582 if (r_type == R_PPC_REL16DX_HA)
9584 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9585 if (rel->r_offset + 4 > input_section->size)
9586 r = bfd_reloc_outofrange;
9591 relocation += addend;
9592 relocation -= (rel->r_offset
9593 + input_section->output_offset
9594 + input_section->output_section->vma);
9596 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9598 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9599 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9604 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9605 rel->r_offset, relocation, addend);
9607 if (r != bfd_reloc_ok)
9609 if (r == bfd_reloc_overflow)
9612 /* On code like "if (foo) foo();" don't report overflow
9613 on a branch to zero when foo is undefined. */
9616 && (h->root.type == bfd_link_hash_undefweak
9617 || h->root.type == bfd_link_hash_undefined)
9618 && is_branch_reloc (r_type)))
9619 info->callbacks->reloc_overflow
9620 (info, (h ? &h->root : NULL), sym_name, howto->name,
9621 rel->r_addend, input_bfd, input_section, rel->r_offset);
9625 info->callbacks->einfo
9626 (_("%P: %H: %s reloc against `%s': error %d\n"),
9627 input_bfd, input_section, rel->r_offset,
9628 howto->name, sym_name, (int) r);
9639 Elf_Internal_Shdr *rel_hdr;
9640 size_t deleted = rel - wrel;
9642 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9643 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9644 if (rel_hdr->sh_size == 0)
9646 /* It is too late to remove an empty reloc section. Leave
9648 ??? What is wrong with an empty section??? */
9649 rel_hdr->sh_size = rel_hdr->sh_entsize;
9654 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9655 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9656 input_section->reloc_count -= deleted;
9660 fprintf (stderr, "\n");
9663 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9664 && input_section->size != input_section->rawsize
9665 && (strcmp (input_section->output_section->name, ".init") == 0
9666 || strcmp (input_section->output_section->name, ".fini") == 0))
9668 /* Branch around the trampolines. */
9669 unsigned int insn = B + input_section->size - input_section->rawsize;
9670 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9673 if (htab->params->ppc476_workaround
9674 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9675 && (!bfd_link_relocatable (info)
9676 || (input_section->output_section->alignment_power
9677 >= htab->params->pagesize_p2)))
9679 bfd_vma start_addr, end_addr, addr;
9680 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9682 if (relax_info->workaround_size != 0)
9688 bfd_put_32 (input_bfd, BA, fill);
9689 p = contents + input_section->size - relax_info->workaround_size;
9690 n = relax_info->workaround_size >> 2;
9693 memcpy (p, fill, 4);
9698 /* The idea is: Replace the last instruction on a page with a
9699 branch to a patch area. Put the insn there followed by a
9700 branch back to the next page. Complicated a little by
9701 needing to handle moved conditional branches, and by not
9702 wanting to touch data-in-text. */
9704 start_addr = (input_section->output_section->vma
9705 + input_section->output_offset);
9706 end_addr = (start_addr + input_section->size
9707 - relax_info->workaround_size);
9708 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9712 bfd_vma offset = addr - start_addr;
9713 Elf_Internal_Rela *lo, *hi;
9714 bfd_boolean is_data;
9715 bfd_vma patch_off, patch_addr;
9718 /* Do we have a data reloc at this offset? If so, leave
9726 rel = lo + (hi - lo) / 2;
9727 if (rel->r_offset < offset)
9729 else if (rel->r_offset > offset + 3)
9733 switch (ELF32_R_TYPE (rel->r_info))
9750 /* Some instructions can be left alone too. Unconditional
9751 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9752 avoid the icache failure.
9754 The problem occurs due to prefetch across a page boundary
9755 where stale instructions can be fetched from the next
9756 page, and the mechanism for flushing these bad
9757 instructions fails under certain circumstances. The
9758 unconditional branches:
9759 1) Branch: b, bl, ba, bla,
9760 2) Branch Conditional: bc, bca, bcl, bcla,
9761 3) Branch Conditional to Link Register: bclr, bclrl,
9762 where (2) and (3) have BO=0x14 making them unconditional,
9763 prevent the bad prefetch because the prefetch itself is
9764 affected by these instructions. This happens even if the
9765 instruction is not executed.
9770 . addi 9,9,new_page@l
9777 The bctr is not predicted taken due to ctr not being
9778 ready, so prefetch continues on past the bctr into the
9779 new page which might have stale instructions. If they
9780 fail to be flushed, then they will be executed after the
9781 bctr executes. Either of the following modifications
9782 prevent the bad prefetch from happening in the first
9785 . lis 9,new_page@ha lis 9,new_page@ha
9786 . addi 9,9,new_page@l addi 9,9,new_page@l
9789 . nop b somewhere_else
9790 . b somewhere_else nop
9791 . new_page: new_page:
9793 insn = bfd_get_32 (input_bfd, contents + offset);
9794 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9795 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9796 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9797 || ((insn & (0x3f << 26)) == (19u << 26)
9798 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9799 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9802 patch_addr = (start_addr + input_section->size
9803 - relax_info->workaround_size);
9804 patch_addr = (patch_addr + 15) & -16;
9805 patch_off = patch_addr - start_addr;
9806 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9809 && rel->r_offset >= offset
9810 && rel->r_offset < offset + 4)
9814 /* If the insn we are patching had a reloc, adjust the
9815 reloc r_offset so that the reloc applies to the moved
9816 location. This matters for -r and --emit-relocs. */
9817 if (rel + 1 != relend)
9819 Elf_Internal_Rela tmp = *rel;
9821 /* Keep the relocs sorted by r_offset. */
9822 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9825 relend[-1].r_offset += patch_off - offset;
9827 /* Adjust REL16 addends too. */
9828 switch (ELF32_R_TYPE (relend[-1].r_info))
9831 case R_PPC_REL16_LO:
9832 case R_PPC_REL16_HI:
9833 case R_PPC_REL16_HA:
9834 relend[-1].r_addend += patch_off - offset;
9840 /* If we are building a PIE or shared library with
9841 non-PIC objects, perhaps we had a dynamic reloc too?
9842 If so, the dynamic reloc must move with the insn. */
9843 sreloc = elf_section_data (input_section)->sreloc;
9846 Elf32_External_Rela *slo, *shi, *srelend;
9849 slo = (Elf32_External_Rela *) sreloc->contents;
9850 shi = srelend = slo + sreloc->reloc_count;
9851 soffset = (offset + input_section->output_section->vma
9852 + input_section->output_offset);
9855 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9856 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9858 if (outrel.r_offset < soffset)
9860 else if (outrel.r_offset > soffset + 3)
9864 if (srel + 1 != srelend)
9866 memmove (srel, srel + 1,
9867 (srelend - (srel + 1)) * sizeof (*srel));
9870 outrel.r_offset += patch_off - offset;
9871 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9881 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9882 && (insn & 2) == 0 /* relative */)
9884 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9886 delta += offset - patch_off;
9887 if (bfd_link_relocatable (info) && rel != NULL)
9889 if (!bfd_link_relocatable (info) && rel != NULL)
9891 enum elf_ppc_reloc_type r_type;
9893 r_type = ELF32_R_TYPE (relend[-1].r_info);
9894 if (r_type == R_PPC_REL14_BRTAKEN)
9895 insn |= BRANCH_PREDICT_BIT;
9896 else if (r_type == R_PPC_REL14_BRNTAKEN)
9897 insn &= ~BRANCH_PREDICT_BIT;
9899 BFD_ASSERT (r_type == R_PPC_REL14);
9901 if ((r_type == R_PPC_REL14_BRTAKEN
9902 || r_type == R_PPC_REL14_BRNTAKEN)
9903 && delta + 0x8000 < 0x10000
9904 && (bfd_signed_vma) delta < 0)
9905 insn ^= BRANCH_PREDICT_BIT;
9907 if (delta + 0x8000 < 0x10000)
9909 bfd_put_32 (input_bfd,
9910 (insn & ~0xfffc) | (delta & 0xfffc),
9911 contents + patch_off);
9913 bfd_put_32 (input_bfd,
9914 B | ((offset + 4 - patch_off) & 0x3fffffc),
9915 contents + patch_off);
9922 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9924 relend[-1].r_offset += 8;
9925 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9927 bfd_put_32 (input_bfd,
9928 (insn & ~0xfffc) | 8,
9929 contents + patch_off);
9931 bfd_put_32 (input_bfd,
9932 B | ((offset + 4 - patch_off) & 0x3fffffc),
9933 contents + patch_off);
9935 bfd_put_32 (input_bfd,
9936 B | ((delta - 8) & 0x3fffffc),
9937 contents + patch_off);
9943 bfd_put_32 (input_bfd, insn, contents + patch_off);
9945 bfd_put_32 (input_bfd,
9946 B | ((offset + 4 - patch_off) & 0x3fffffc),
9947 contents + patch_off);
9950 BFD_ASSERT (patch_off <= input_section->size);
9951 relax_info->workaround_size = input_section->size - patch_off;
9958 /* Finish up dynamic symbol handling. We set the contents of various
9959 dynamic sections here. */
9962 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9963 struct bfd_link_info *info,
9964 struct elf_link_hash_entry *h,
9965 Elf_Internal_Sym *sym)
9967 struct ppc_elf_link_hash_table *htab;
9968 struct plt_entry *ent;
9969 bfd_boolean doneone;
9972 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9973 h->root.root.string);
9976 htab = ppc_elf_hash_table (info);
9977 BFD_ASSERT (htab->elf.dynobj != NULL);
9980 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9981 if (ent->plt.offset != (bfd_vma) -1)
9985 Elf_Internal_Rela rela;
9987 bfd_vma reloc_index;
9989 if (htab->plt_type == PLT_NEW
9990 || !htab->elf.dynamic_sections_created
9991 || h->dynindx == -1)
9992 reloc_index = ent->plt.offset / 4;
9995 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9996 / htab->plt_slot_size);
9997 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9998 && htab->plt_type == PLT_OLD)
9999 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10002 /* This symbol has an entry in the procedure linkage table.
10004 if (htab->plt_type == PLT_VXWORKS
10005 && htab->elf.dynamic_sections_created
10006 && h->dynindx != -1)
10008 bfd_vma got_offset;
10009 const bfd_vma *plt_entry;
10011 /* The first three entries in .got.plt are reserved. */
10012 got_offset = (reloc_index + 3) * 4;
10014 /* Use the right PLT. */
10015 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10016 : ppc_elf_vxworks_plt_entry;
10018 /* Fill in the .plt on VxWorks. */
10019 if (bfd_link_pic (info))
10021 bfd_put_32 (output_bfd,
10022 plt_entry[0] | PPC_HA (got_offset),
10023 htab->plt->contents + ent->plt.offset + 0);
10024 bfd_put_32 (output_bfd,
10025 plt_entry[1] | PPC_LO (got_offset),
10026 htab->plt->contents + ent->plt.offset + 4);
10030 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10032 bfd_put_32 (output_bfd,
10033 plt_entry[0] | PPC_HA (got_loc),
10034 htab->plt->contents + ent->plt.offset + 0);
10035 bfd_put_32 (output_bfd,
10036 plt_entry[1] | PPC_LO (got_loc),
10037 htab->plt->contents + ent->plt.offset + 4);
10040 bfd_put_32 (output_bfd, plt_entry[2],
10041 htab->plt->contents + ent->plt.offset + 8);
10042 bfd_put_32 (output_bfd, plt_entry[3],
10043 htab->plt->contents + ent->plt.offset + 12);
10045 /* This instruction is an immediate load. The value loaded is
10046 the byte offset of the R_PPC_JMP_SLOT relocation from the
10047 start of the .rela.plt section. The value is stored in the
10048 low-order 16 bits of the load instruction. */
10049 /* NOTE: It appears that this is now an index rather than a
10050 prescaled offset. */
10051 bfd_put_32 (output_bfd,
10052 plt_entry[4] | reloc_index,
10053 htab->plt->contents + ent->plt.offset + 16);
10054 /* This instruction is a PC-relative branch whose target is
10055 the start of the PLT section. The address of this branch
10056 instruction is 20 bytes beyond the start of this PLT entry.
10057 The address is encoded in bits 6-29, inclusive. The value
10058 stored is right-shifted by two bits, permitting a 26-bit
10060 bfd_put_32 (output_bfd,
10062 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10063 htab->plt->contents + ent->plt.offset + 20);
10064 bfd_put_32 (output_bfd, plt_entry[6],
10065 htab->plt->contents + ent->plt.offset + 24);
10066 bfd_put_32 (output_bfd, plt_entry[7],
10067 htab->plt->contents + ent->plt.offset + 28);
10069 /* Fill in the GOT entry corresponding to this PLT slot with
10070 the address immediately after the "bctr" instruction
10071 in this PLT entry. */
10072 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
10073 + htab->plt->output_offset
10074 + ent->plt.offset + 16),
10075 htab->sgotplt->contents + got_offset);
10077 if (!bfd_link_pic (info))
10079 /* Fill in a couple of entries in .rela.plt.unloaded. */
10080 loc = htab->srelplt2->contents
10081 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10082 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10083 * sizeof (Elf32_External_Rela));
10085 /* Provide the @ha relocation for the first instruction. */
10086 rela.r_offset = (htab->plt->output_section->vma
10087 + htab->plt->output_offset
10088 + ent->plt.offset + 2);
10089 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10091 rela.r_addend = got_offset;
10092 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10093 loc += sizeof (Elf32_External_Rela);
10095 /* Provide the @l relocation for the second instruction. */
10096 rela.r_offset = (htab->plt->output_section->vma
10097 + htab->plt->output_offset
10098 + ent->plt.offset + 6);
10099 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10101 rela.r_addend = got_offset;
10102 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10103 loc += sizeof (Elf32_External_Rela);
10105 /* Provide a relocation for the GOT entry corresponding to this
10106 PLT slot. Point it at the middle of the .plt entry. */
10107 rela.r_offset = (htab->sgotplt->output_section->vma
10108 + htab->sgotplt->output_offset
10110 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10112 rela.r_addend = ent->plt.offset + 16;
10113 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10116 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10117 In particular, the offset for the relocation is not the
10118 address of the PLT entry for this function, as specified
10119 by the ABI. Instead, the offset is set to the address of
10120 the GOT slot for this function. See EABI 4.4.4.1. */
10121 rela.r_offset = (htab->sgotplt->output_section->vma
10122 + htab->sgotplt->output_offset
10128 asection *splt = htab->plt;
10129 if (!htab->elf.dynamic_sections_created
10130 || h->dynindx == -1)
10133 rela.r_offset = (splt->output_section->vma
10134 + splt->output_offset
10135 + ent->plt.offset);
10136 if (htab->plt_type == PLT_OLD
10137 || !htab->elf.dynamic_sections_created
10138 || h->dynindx == -1)
10140 /* We don't need to fill in the .plt. The ppc dynamic
10141 linker will fill it in. */
10145 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10146 + htab->glink->output_section->vma
10147 + htab->glink->output_offset);
10148 bfd_put_32 (output_bfd, val,
10149 splt->contents + ent->plt.offset);
10153 /* Fill in the entry in the .rela.plt section. */
10155 if (!htab->elf.dynamic_sections_created
10156 || h->dynindx == -1)
10158 BFD_ASSERT (h->type == STT_GNU_IFUNC
10160 && (h->root.type == bfd_link_hash_defined
10161 || h->root.type == bfd_link_hash_defweak));
10162 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10163 rela.r_addend = SYM_VAL (h);
10166 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10168 if (!htab->elf.dynamic_sections_created
10169 || h->dynindx == -1)
10170 loc = (htab->reliplt->contents
10171 + (htab->reliplt->reloc_count++
10172 * sizeof (Elf32_External_Rela)));
10174 loc = (htab->relplt->contents
10175 + reloc_index * sizeof (Elf32_External_Rela));
10176 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10178 if (!h->def_regular)
10180 /* Mark the symbol as undefined, rather than as
10181 defined in the .plt section. Leave the value if
10182 there were any relocations where pointer equality
10183 matters (this is a clue for the dynamic linker, to
10184 make function pointer comparisons work between an
10185 application and shared library), otherwise set it
10187 sym->st_shndx = SHN_UNDEF;
10188 if (!h->pointer_equality_needed)
10190 else if (!h->ref_regular_nonweak)
10192 /* This breaks function pointer comparisons, but
10193 that is better than breaking tests for a NULL
10194 function pointer. */
10198 else if (h->type == STT_GNU_IFUNC
10199 && !bfd_link_pic (info))
10201 /* Set the value of ifunc symbols in a non-pie
10202 executable to the glink entry. This is to avoid
10203 text relocations. We can't do this for ifunc in
10204 allocate_dynrelocs, as we do for normal dynamic
10205 function symbols with plt entries, because we need
10206 to keep the original value around for the ifunc
10208 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10209 (output_bfd, htab->glink->output_section));
10210 sym->st_value = (ent->glink_offset
10211 + htab->glink->output_offset
10212 + htab->glink->output_section->vma);
10217 if (htab->plt_type == PLT_NEW
10218 || !htab->elf.dynamic_sections_created
10219 || h->dynindx == -1)
10222 asection *splt = htab->plt;
10223 if (!htab->elf.dynamic_sections_created
10224 || h->dynindx == -1)
10227 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10229 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10231 bfd_put_32 (output_bfd, LWZ_11_3, p);
10233 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10235 bfd_put_32 (output_bfd, MR_0_3, p);
10237 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10239 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10241 bfd_put_32 (output_bfd, BEQLR, p);
10243 bfd_put_32 (output_bfd, MR_3_0, p);
10245 bfd_put_32 (output_bfd, NOP, p);
10249 write_glink_stub (ent, splt, p, info);
10251 if (!bfd_link_pic (info))
10252 /* We only need one non-PIC glink stub. */
10262 Elf_Internal_Rela rela;
10265 /* This symbols needs a copy reloc. Set it up. */
10268 fprintf (stderr, ", copy");
10271 BFD_ASSERT (h->dynindx != -1);
10273 if (ppc_elf_hash_entry (h)->has_sda_refs)
10277 BFD_ASSERT (s != NULL);
10279 rela.r_offset = SYM_VAL (h);
10280 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10282 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10283 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10287 fprintf (stderr, "\n");
10293 static enum elf_reloc_type_class
10294 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10295 const asection *rel_sec,
10296 const Elf_Internal_Rela *rela)
10298 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10300 if (rel_sec == htab->reliplt)
10301 return reloc_class_ifunc;
10303 switch (ELF32_R_TYPE (rela->r_info))
10305 case R_PPC_RELATIVE:
10306 return reloc_class_relative;
10307 case R_PPC_JMP_SLOT:
10308 return reloc_class_plt;
10310 return reloc_class_copy;
10312 return reloc_class_normal;
10316 /* Finish up the dynamic sections. */
10319 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10320 struct bfd_link_info *info)
10324 struct ppc_elf_link_hash_table *htab;
10327 bfd_boolean ret = TRUE;
10330 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10333 htab = ppc_elf_hash_table (info);
10334 dynobj = elf_hash_table (info)->dynobj;
10335 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10336 if (htab->is_vxworks)
10337 splt = bfd_get_linker_section (dynobj, ".plt");
10342 if (htab->elf.hgot != NULL)
10343 got = SYM_VAL (htab->elf.hgot);
10345 if (htab->elf.dynamic_sections_created)
10347 Elf32_External_Dyn *dyncon, *dynconend;
10349 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
10351 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10352 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10353 for (; dyncon < dynconend; dyncon++)
10355 Elf_Internal_Dyn dyn;
10358 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10363 if (htab->is_vxworks)
10367 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10371 dyn.d_un.d_val = htab->relplt->size;
10376 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10380 dyn.d_un.d_ptr = got;
10384 if (htab->is_vxworks)
10387 dyn.d_un.d_ptr -= htab->relplt->size;
10393 if (htab->is_vxworks
10394 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10399 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10403 if (htab->got != NULL)
10405 if (htab->elf.hgot->root.u.def.section == htab->got
10406 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
10408 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10410 p += htab->elf.hgot->root.u.def.value;
10411 if (htab->plt_type == PLT_OLD)
10413 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10414 so that a function can easily find the address of
10415 _GLOBAL_OFFSET_TABLE_. */
10416 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10417 < htab->elf.hgot->root.u.def.section->size);
10418 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10423 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10424 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10425 < htab->elf.hgot->root.u.def.section->size);
10426 bfd_put_32 (output_bfd, val, p);
10431 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10432 htab->elf.hgot->root.root.string,
10433 (htab->sgotplt != NULL
10434 ? htab->sgotplt->name : htab->got->name));
10435 bfd_set_error (bfd_error_bad_value);
10439 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10442 /* Fill in the first entry in the VxWorks procedure linkage table. */
10443 if (splt && splt->size > 0)
10445 /* Use the right PLT. */
10446 const bfd_vma *plt_entry = (bfd_link_pic (info)
10447 ? ppc_elf_vxworks_pic_plt0_entry
10448 : ppc_elf_vxworks_plt0_entry);
10450 if (!bfd_link_pic (info))
10452 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10454 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10455 splt->contents + 0);
10456 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10457 splt->contents + 4);
10461 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10462 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10464 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10465 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10466 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10467 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10468 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10469 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10471 if (! bfd_link_pic (info))
10473 Elf_Internal_Rela rela;
10476 loc = htab->srelplt2->contents;
10478 /* Output the @ha relocation for the first instruction. */
10479 rela.r_offset = (htab->plt->output_section->vma
10480 + htab->plt->output_offset
10482 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10484 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10485 loc += sizeof (Elf32_External_Rela);
10487 /* Output the @l relocation for the second instruction. */
10488 rela.r_offset = (htab->plt->output_section->vma
10489 + htab->plt->output_offset
10491 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10493 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10494 loc += sizeof (Elf32_External_Rela);
10496 /* Fix up the remaining relocations. They may have the wrong
10497 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10498 in which symbols were output. */
10499 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10501 Elf_Internal_Rela rel;
10503 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10504 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10505 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10506 loc += sizeof (Elf32_External_Rela);
10508 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10509 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10510 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10511 loc += sizeof (Elf32_External_Rela);
10513 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10514 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10515 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10516 loc += sizeof (Elf32_External_Rela);
10521 if (htab->glink != NULL
10522 && htab->glink->contents != NULL
10523 && htab->elf.dynamic_sections_created)
10526 unsigned char *endp;
10531 * PIC glink code is the following:
10533 * # ith PLT code stub.
10534 * addis 11,30,(plt+(i-1)*4-got)@ha
10535 * lwz 11,(plt+(i-1)*4-got)@l(11)
10539 * # A table of branches, one for each plt entry.
10540 * # The idea is that the plt call stub loads ctr and r11 with these
10541 * # addresses, so (r11 - res_0) gives the plt index * 4.
10542 * res_0: b PLTresolve
10543 * res_1: b PLTresolve
10545 * # Some number of entries towards the end can be nops
10551 * addis 11,11,(1f-res_0)@ha
10554 * 1: addi 11,11,(1b-res_0)@l
10557 * sub 11,11,12 # r11 = index * 4
10558 * addis 12,12,(got+4-1b)@ha
10559 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10560 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10563 * add 11,0,11 # r11 = index * 12 = reloc offset.
10566 static const unsigned int pic_plt_resolve[] =
10587 * Non-PIC glink code is a little simpler.
10589 * # ith PLT code stub.
10590 * lis 11,(plt+(i-1)*4)@ha
10591 * lwz 11,(plt+(i-1)*4)@l(11)
10595 * The branch table is the same, then comes
10598 * lis 12,(got+4)@ha
10599 * addis 11,11,(-res_0)@ha
10600 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10601 * addi 11,11,(-res_0)@l # r11 = index * 4
10604 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10605 * add 11,0,11 # r11 = index * 12 = reloc offset.
10608 static const unsigned int plt_resolve[] =
10628 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10630 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10633 /* Build the branch table, one for each plt entry (less one),
10634 and perhaps some padding. */
10635 p = htab->glink->contents;
10636 p += htab->glink_pltresolve;
10637 endp = htab->glink->contents;
10638 endp += htab->glink->size - GLINK_PLTRESOLVE;
10639 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10641 bfd_put_32 (output_bfd, B + endp - p, p);
10646 bfd_put_32 (output_bfd, NOP, p);
10650 res0 = (htab->glink_pltresolve
10651 + htab->glink->output_section->vma
10652 + htab->glink->output_offset);
10654 if (htab->params->ppc476_workaround)
10656 /* Ensure that a call stub at the end of a page doesn't
10657 result in prefetch over the end of the page into the
10658 glink branch table. */
10659 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10661 bfd_vma glink_start = (htab->glink->output_section->vma
10662 + htab->glink->output_offset);
10664 for (page_addr = res0 & -pagesize;
10665 page_addr > glink_start;
10666 page_addr -= pagesize)
10668 /* We have a plt call stub that may need fixing. */
10672 loc = htab->glink->contents + page_addr - 4 - glink_start;
10673 insn = bfd_get_32 (output_bfd, loc);
10676 /* By alignment, we know that there must be at least
10677 one other call stub before this one. */
10678 insn = bfd_get_32 (output_bfd, loc - 16);
10680 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10682 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10687 /* Last comes the PLTresolve stub. */
10688 if (bfd_link_pic (info))
10692 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10694 unsigned int insn = pic_plt_resolve[i];
10696 if (htab->params->ppc476_workaround && insn == NOP)
10698 bfd_put_32 (output_bfd, insn, p);
10701 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10703 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10704 + htab->glink->output_section->vma
10705 + htab->glink->output_offset);
10707 bfd_put_32 (output_bfd,
10708 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10709 bfd_put_32 (output_bfd,
10710 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10711 bfd_put_32 (output_bfd,
10712 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10713 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10715 bfd_put_32 (output_bfd,
10716 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10717 bfd_put_32 (output_bfd,
10718 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10722 bfd_put_32 (output_bfd,
10723 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10724 bfd_put_32 (output_bfd,
10725 LWZ_12_12 + 4, p + 9*4);
10730 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10732 unsigned int insn = plt_resolve[i];
10734 if (htab->params->ppc476_workaround && insn == NOP)
10736 bfd_put_32 (output_bfd, insn, p);
10739 p -= 4 * ARRAY_SIZE (plt_resolve);
10741 bfd_put_32 (output_bfd,
10742 LIS_12 + PPC_HA (got + 4), p + 0*4);
10743 bfd_put_32 (output_bfd,
10744 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10745 bfd_put_32 (output_bfd,
10746 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10747 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10749 bfd_put_32 (output_bfd,
10750 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10751 bfd_put_32 (output_bfd,
10752 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10756 bfd_put_32 (output_bfd,
10757 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10758 bfd_put_32 (output_bfd,
10759 LWZ_12_12 + 4, p + 6*4);
10764 if (htab->glink_eh_frame != NULL
10765 && htab->glink_eh_frame->contents != NULL)
10767 unsigned char *p = htab->glink_eh_frame->contents;
10770 p += sizeof (glink_eh_frame_cie);
10775 /* Offset to .glink. */
10776 val = (htab->glink->output_section->vma
10777 + htab->glink->output_offset);
10778 val -= (htab->glink_eh_frame->output_section->vma
10779 + htab->glink_eh_frame->output_offset);
10780 val -= p - htab->glink_eh_frame->contents;
10781 bfd_put_32 (htab->elf.dynobj, val, p);
10783 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10784 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10785 htab->glink_eh_frame,
10786 htab->glink_eh_frame->contents))
10793 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10794 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10795 #define TARGET_BIG_SYM powerpc_elf32_vec
10796 #define TARGET_BIG_NAME "elf32-powerpc"
10797 #define ELF_ARCH bfd_arch_powerpc
10798 #define ELF_TARGET_ID PPC32_ELF_DATA
10799 #define ELF_MACHINE_CODE EM_PPC
10800 #ifdef __QNXTARGET__
10801 #define ELF_MAXPAGESIZE 0x1000
10802 #define ELF_COMMONPAGESIZE 0x1000
10804 #define ELF_MAXPAGESIZE 0x10000
10805 #define ELF_COMMONPAGESIZE 0x10000
10807 #define ELF_MINPAGESIZE 0x1000
10808 #define elf_info_to_howto ppc_elf_info_to_howto
10810 #ifdef EM_CYGNUS_POWERPC
10811 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10815 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10818 #define elf_backend_plt_not_loaded 1
10819 #define elf_backend_can_gc_sections 1
10820 #define elf_backend_can_refcount 1
10821 #define elf_backend_rela_normal 1
10822 #define elf_backend_caches_rawsize 1
10824 #define bfd_elf32_mkobject ppc_elf_mkobject
10825 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10826 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10827 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10828 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10829 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10830 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10831 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10833 #define elf_backend_object_p ppc_elf_object_p
10834 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10835 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10836 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10837 #define elf_backend_relocate_section ppc_elf_relocate_section
10838 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10839 #define elf_backend_check_relocs ppc_elf_check_relocs
10840 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10841 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10842 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10843 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10844 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10845 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10846 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10847 #define elf_backend_fake_sections ppc_elf_fake_sections
10848 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10849 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10850 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10851 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10852 #define elf_backend_write_core_note ppc_elf_write_core_note
10853 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10854 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10855 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10856 #define elf_backend_write_section ppc_elf_write_section
10857 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10858 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10859 #define elf_backend_action_discarded ppc_elf_action_discarded
10860 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10861 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10862 #define elf_backend_section_processing ppc_elf_section_processing
10864 #include "elf32-target.h"
10866 /* FreeBSD Target */
10868 #undef TARGET_LITTLE_SYM
10869 #undef TARGET_LITTLE_NAME
10871 #undef TARGET_BIG_SYM
10872 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10873 #undef TARGET_BIG_NAME
10874 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10877 #define ELF_OSABI ELFOSABI_FREEBSD
10880 #define elf32_bed elf32_powerpc_fbsd_bed
10882 #include "elf32-target.h"
10884 /* VxWorks Target */
10886 #undef TARGET_LITTLE_SYM
10887 #undef TARGET_LITTLE_NAME
10889 #undef TARGET_BIG_SYM
10890 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10891 #undef TARGET_BIG_NAME
10892 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10896 /* VxWorks uses the elf default section flags for .plt. */
10897 static const struct bfd_elf_special_section *
10898 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10900 if (sec->name == NULL)
10903 if (strcmp (sec->name, ".plt") == 0)
10904 return _bfd_elf_get_sec_type_attr (abfd, sec);
10906 return ppc_elf_get_sec_type_attr (abfd, sec);
10909 /* Like ppc_elf_link_hash_table_create, but overrides
10910 appropriately for VxWorks. */
10911 static struct bfd_link_hash_table *
10912 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10914 struct bfd_link_hash_table *ret;
10916 ret = ppc_elf_link_hash_table_create (abfd);
10919 struct ppc_elf_link_hash_table *htab
10920 = (struct ppc_elf_link_hash_table *)ret;
10921 htab->is_vxworks = 1;
10922 htab->plt_type = PLT_VXWORKS;
10923 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10924 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10925 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10930 /* Tweak magic VxWorks symbols as they are loaded. */
10932 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10933 struct bfd_link_info *info,
10934 Elf_Internal_Sym *sym,
10935 const char **namep ATTRIBUTE_UNUSED,
10936 flagword *flagsp ATTRIBUTE_UNUSED,
10940 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10944 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10948 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10950 ppc_elf_final_write_processing(abfd, linker);
10951 elf_vxworks_final_write_processing(abfd, linker);
10954 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10956 #undef elf_backend_want_plt_sym
10957 #define elf_backend_want_plt_sym 1
10958 #undef elf_backend_want_got_plt
10959 #define elf_backend_want_got_plt 1
10960 #undef elf_backend_got_symbol_offset
10961 #define elf_backend_got_symbol_offset 0
10962 #undef elf_backend_plt_not_loaded
10963 #define elf_backend_plt_not_loaded 0
10964 #undef elf_backend_plt_readonly
10965 #define elf_backend_plt_readonly 1
10966 #undef elf_backend_got_header_size
10967 #define elf_backend_got_header_size 12
10969 #undef bfd_elf32_get_synthetic_symtab
10971 #undef bfd_elf32_bfd_link_hash_table_create
10972 #define bfd_elf32_bfd_link_hash_table_create \
10973 ppc_elf_vxworks_link_hash_table_create
10974 #undef elf_backend_add_symbol_hook
10975 #define elf_backend_add_symbol_hook \
10976 ppc_elf_vxworks_add_symbol_hook
10977 #undef elf_backend_link_output_symbol_hook
10978 #define elf_backend_link_output_symbol_hook \
10979 elf_vxworks_link_output_symbol_hook
10980 #undef elf_backend_final_write_processing
10981 #define elf_backend_final_write_processing \
10982 ppc_elf_vxworks_final_write_processing
10983 #undef elf_backend_get_sec_type_attr
10984 #define elf_backend_get_sec_type_attr \
10985 ppc_elf_vxworks_get_sec_type_attr
10986 #undef elf_backend_emit_relocs
10987 #define elf_backend_emit_relocs \
10988 elf_vxworks_emit_relocs
10991 #define elf32_bed ppc_elf_vxworks_bed
10992 #undef elf_backend_post_process_headers
10994 #include "elf32-target.h"