1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the
20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
24 /* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
36 #include "elf32-ppc.h"
37 #include "elf-vxworks.h"
39 /* RELA relocations are used here. */
41 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc_elf_unhandled_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 /* Branch prediction bit for branch taken relocs. */
47 #define BRANCH_PREDICT_BIT 0x200000
48 /* Mask to set RA in memory instructions. */
49 #define RA_REGISTER_MASK 0x001f0000
50 /* Value to shift register by to insert RA. */
51 #define RA_REGISTER_SHIFT 16
53 /* The name of the dynamic interpreter. This is put in the .interp
55 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
57 /* For old-style PLT. */
58 /* The number of single-slot PLT entries (the rest use two slots). */
59 #define PLT_NUM_SINGLE_ENTRIES 8192
61 /* For new-style .glink and .plt. */
62 #define GLINK_PLTRESOLVE 16*4
63 #define GLINK_ENTRY_SIZE 4*4
64 #define TLS_GET_ADDR_GLINK_SIZE 12*4
66 /* VxWorks uses its own plt layout, filled in by the static linker. */
68 /* The standard VxWorks PLT entry. */
69 #define VXWORKS_PLT_ENTRY_SIZE 32
70 static const bfd_vma ppc_elf_vxworks_plt_entry
71 [VXWORKS_PLT_ENTRY_SIZE / 4] =
73 0x3d800000, /* lis r12,0 */
74 0x818c0000, /* lwz r12,0(r12) */
75 0x7d8903a6, /* mtctr r12 */
76 0x4e800420, /* bctr */
77 0x39600000, /* li r11,0 */
78 0x48000000, /* b 14 <.PLT0resolve+0x4> */
82 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
83 [VXWORKS_PLT_ENTRY_SIZE / 4] =
85 0x3d9e0000, /* addis r12,r30,0 */
86 0x818c0000, /* lwz r12,0(r12) */
87 0x7d8903a6, /* mtctr r12 */
88 0x4e800420, /* bctr */
89 0x39600000, /* li r11,0 */
90 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
95 /* The initial VxWorks PLT entry. */
96 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
97 static const bfd_vma ppc_elf_vxworks_plt0_entry
98 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
100 0x3d800000, /* lis r12,0 */
101 0x398c0000, /* addi r12,r12,0 */
102 0x800c0008, /* lwz r0,8(r12) */
103 0x7c0903a6, /* mtctr r0 */
104 0x818c0004, /* lwz r12,4(r12) */
105 0x4e800420, /* bctr */
106 0x60000000, /* nop */
107 0x60000000, /* nop */
109 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
110 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
112 0x819e0008, /* lwz r12,8(r30) */
113 0x7d8903a6, /* mtctr r12 */
114 0x819e0004, /* lwz r12,4(r30) */
115 0x4e800420, /* bctr */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
119 0x60000000, /* nop */
122 /* For executables, we have some additional relocations in
123 .rela.plt.unloaded, for the kernel loader. */
125 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
126 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
127 /* The number of relocations in the PLTResolve slot. */
128 #define VXWORKS_PLTRESOLVE_RELOCS 2
129 /* The number of relocations in the PLTResolve slot when when creating
131 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
133 /* Some instructions. */
134 #define ADDIS_11_11 0x3d6b0000
135 #define ADDIS_11_30 0x3d7e0000
136 #define ADDIS_12_12 0x3d8c0000
137 #define ADDI_11_11 0x396b0000
138 #define ADD_0_11_11 0x7c0b5a14
139 #define ADD_3_12_2 0x7c6c1214
140 #define ADD_11_0_11 0x7d605a14
142 #define BCL_20_31 0x429f0005
143 #define BCTR 0x4e800420
144 #define BEQLR 0x4d820020
145 #define CMPWI_11_0 0x2c0b0000
146 #define LIS_11 0x3d600000
147 #define LIS_12 0x3d800000
148 #define LWZU_0_12 0x840c0000
149 #define LWZ_0_12 0x800c0000
150 #define LWZ_11_3 0x81630000
151 #define LWZ_11_11 0x816b0000
152 #define LWZ_11_30 0x817e0000
153 #define LWZ_12_3 0x81830000
154 #define LWZ_12_12 0x818c0000
155 #define MR_0_3 0x7c601b78
156 #define MR_3_0 0x7c030378
157 #define MFLR_0 0x7c0802a6
158 #define MFLR_12 0x7d8802a6
159 #define MTCTR_0 0x7c0903a6
160 #define MTCTR_11 0x7d6903a6
161 #define MTLR_0 0x7c0803a6
162 #define NOP 0x60000000
163 #define SUB_11_11_12 0x7d6c5850
165 /* Offset of tp and dtp pointers from start of TLS block. */
166 #define TP_OFFSET 0x7000
167 #define DTP_OFFSET 0x8000
169 /* The value of a defined global symbol. */
170 #define SYM_VAL(SYM) \
171 ((SYM)->root.u.def.section->output_section->vma \
172 + (SYM)->root.u.def.section->output_offset \
173 + (SYM)->root.u.def.value)
175 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
177 static reloc_howto_type ppc_elf_howto_raw[] = {
178 /* This reloc does nothing. */
179 HOWTO (R_PPC_NONE, /* type */
181 2, /* size (0 = byte, 1 = short, 2 = long) */
183 FALSE, /* pc_relative */
185 complain_overflow_bitfield, /* complain_on_overflow */
186 bfd_elf_generic_reloc, /* special_function */
187 "R_PPC_NONE", /* name */
188 FALSE, /* partial_inplace */
191 FALSE), /* pcrel_offset */
193 /* A standard 32 bit relocation. */
194 HOWTO (R_PPC_ADDR32, /* type */
196 2, /* size (0 = byte, 1 = short, 2 = long) */
198 FALSE, /* pc_relative */
200 complain_overflow_bitfield, /* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_PPC_ADDR32", /* name */
203 FALSE, /* partial_inplace */
205 0xffffffff, /* dst_mask */
206 FALSE), /* pcrel_offset */
208 /* An absolute 26 bit branch; the lower two bits must be zero.
209 FIXME: we don't check that, we just clear them. */
210 HOWTO (R_PPC_ADDR24, /* type */
212 2, /* size (0 = byte, 1 = short, 2 = long) */
214 FALSE, /* pc_relative */
216 complain_overflow_bitfield, /* complain_on_overflow */
217 bfd_elf_generic_reloc, /* special_function */
218 "R_PPC_ADDR24", /* name */
219 FALSE, /* partial_inplace */
221 0x3fffffc, /* dst_mask */
222 FALSE), /* pcrel_offset */
224 /* A standard 16 bit relocation. */
225 HOWTO (R_PPC_ADDR16, /* type */
227 1, /* size (0 = byte, 1 = short, 2 = long) */
229 FALSE, /* pc_relative */
231 complain_overflow_bitfield, /* complain_on_overflow */
232 bfd_elf_generic_reloc, /* special_function */
233 "R_PPC_ADDR16", /* name */
234 FALSE, /* partial_inplace */
236 0xffff, /* dst_mask */
237 FALSE), /* pcrel_offset */
239 /* A 16 bit relocation without overflow. */
240 HOWTO (R_PPC_ADDR16_LO, /* type */
242 1, /* size (0 = byte, 1 = short, 2 = long) */
244 FALSE, /* pc_relative */
246 complain_overflow_dont,/* complain_on_overflow */
247 bfd_elf_generic_reloc, /* special_function */
248 "R_PPC_ADDR16_LO", /* name */
249 FALSE, /* partial_inplace */
251 0xffff, /* dst_mask */
252 FALSE), /* pcrel_offset */
254 /* The high order 16 bits of an address. */
255 HOWTO (R_PPC_ADDR16_HI, /* type */
257 1, /* size (0 = byte, 1 = short, 2 = long) */
259 FALSE, /* pc_relative */
261 complain_overflow_dont, /* complain_on_overflow */
262 bfd_elf_generic_reloc, /* special_function */
263 "R_PPC_ADDR16_HI", /* name */
264 FALSE, /* partial_inplace */
266 0xffff, /* dst_mask */
267 FALSE), /* pcrel_offset */
269 /* The high order 16 bits of an address, plus 1 if the contents of
270 the low 16 bits, treated as a signed number, is negative. */
271 HOWTO (R_PPC_ADDR16_HA, /* type */
273 1, /* size (0 = byte, 1 = short, 2 = long) */
275 FALSE, /* pc_relative */
277 complain_overflow_dont, /* complain_on_overflow */
278 ppc_elf_addr16_ha_reloc, /* special_function */
279 "R_PPC_ADDR16_HA", /* name */
280 FALSE, /* partial_inplace */
282 0xffff, /* dst_mask */
283 FALSE), /* pcrel_offset */
285 /* An absolute 16 bit branch; the lower two bits must be zero.
286 FIXME: we don't check that, we just clear them. */
287 HOWTO (R_PPC_ADDR14, /* type */
289 2, /* size (0 = byte, 1 = short, 2 = long) */
291 FALSE, /* pc_relative */
293 complain_overflow_bitfield, /* complain_on_overflow */
294 bfd_elf_generic_reloc, /* special_function */
295 "R_PPC_ADDR14", /* name */
296 FALSE, /* partial_inplace */
298 0xfffc, /* dst_mask */
299 FALSE), /* pcrel_offset */
301 /* An absolute 16 bit branch, for which bit 10 should be set to
302 indicate that the branch is expected to be taken. The lower two
303 bits must be zero. */
304 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
306 2, /* size (0 = byte, 1 = short, 2 = long) */
308 FALSE, /* pc_relative */
310 complain_overflow_bitfield, /* complain_on_overflow */
311 bfd_elf_generic_reloc, /* special_function */
312 "R_PPC_ADDR14_BRTAKEN",/* name */
313 FALSE, /* partial_inplace */
315 0xfffc, /* dst_mask */
316 FALSE), /* pcrel_offset */
318 /* An absolute 16 bit branch, for which bit 10 should be set to
319 indicate that the branch is not expected to be taken. The lower
320 two bits must be zero. */
321 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
323 2, /* size (0 = byte, 1 = short, 2 = long) */
325 FALSE, /* pc_relative */
327 complain_overflow_bitfield, /* complain_on_overflow */
328 bfd_elf_generic_reloc, /* special_function */
329 "R_PPC_ADDR14_BRNTAKEN",/* name */
330 FALSE, /* partial_inplace */
332 0xfffc, /* dst_mask */
333 FALSE), /* pcrel_offset */
335 /* A relative 26 bit branch; the lower two bits must be zero. */
336 HOWTO (R_PPC_REL24, /* type */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
340 TRUE, /* pc_relative */
342 complain_overflow_signed, /* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_PPC_REL24", /* name */
345 FALSE, /* partial_inplace */
347 0x3fffffc, /* dst_mask */
348 TRUE), /* pcrel_offset */
350 /* A relative 16 bit branch; the lower two bits must be zero. */
351 HOWTO (R_PPC_REL14, /* type */
353 2, /* size (0 = byte, 1 = short, 2 = long) */
355 TRUE, /* pc_relative */
357 complain_overflow_signed, /* complain_on_overflow */
358 bfd_elf_generic_reloc, /* special_function */
359 "R_PPC_REL14", /* name */
360 FALSE, /* partial_inplace */
362 0xfffc, /* dst_mask */
363 TRUE), /* pcrel_offset */
365 /* A relative 16 bit branch. Bit 10 should be set to indicate that
366 the branch is expected to be taken. The lower two bits must be
368 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
372 TRUE, /* pc_relative */
374 complain_overflow_signed, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_PPC_REL14_BRTAKEN", /* name */
377 FALSE, /* partial_inplace */
379 0xfffc, /* dst_mask */
380 TRUE), /* pcrel_offset */
382 /* A relative 16 bit branch. Bit 10 should be set to indicate that
383 the branch is not expected to be taken. The lower two bits must
385 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
387 2, /* size (0 = byte, 1 = short, 2 = long) */
389 TRUE, /* pc_relative */
391 complain_overflow_signed, /* complain_on_overflow */
392 bfd_elf_generic_reloc, /* special_function */
393 "R_PPC_REL14_BRNTAKEN",/* name */
394 FALSE, /* partial_inplace */
396 0xfffc, /* dst_mask */
397 TRUE), /* pcrel_offset */
399 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
401 HOWTO (R_PPC_GOT16, /* type */
403 1, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE, /* pc_relative */
407 complain_overflow_signed, /* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_PPC_GOT16", /* name */
410 FALSE, /* partial_inplace */
412 0xffff, /* dst_mask */
413 FALSE), /* pcrel_offset */
415 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
417 HOWTO (R_PPC_GOT16_LO, /* type */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
421 FALSE, /* pc_relative */
423 complain_overflow_dont, /* complain_on_overflow */
424 bfd_elf_generic_reloc, /* special_function */
425 "R_PPC_GOT16_LO", /* name */
426 FALSE, /* partial_inplace */
428 0xffff, /* dst_mask */
429 FALSE), /* pcrel_offset */
431 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
433 HOWTO (R_PPC_GOT16_HI, /* type */
435 1, /* size (0 = byte, 1 = short, 2 = long) */
437 FALSE, /* pc_relative */
439 complain_overflow_bitfield, /* complain_on_overflow */
440 bfd_elf_generic_reloc, /* special_function */
441 "R_PPC_GOT16_HI", /* name */
442 FALSE, /* partial_inplace */
444 0xffff, /* dst_mask */
445 FALSE), /* pcrel_offset */
447 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
449 HOWTO (R_PPC_GOT16_HA, /* type */
451 1, /* size (0 = byte, 1 = short, 2 = long) */
453 FALSE, /* pc_relative */
455 complain_overflow_bitfield, /* complain_on_overflow */
456 ppc_elf_addr16_ha_reloc, /* special_function */
457 "R_PPC_GOT16_HA", /* name */
458 FALSE, /* partial_inplace */
460 0xffff, /* dst_mask */
461 FALSE), /* pcrel_offset */
463 /* Like R_PPC_REL24, but referring to the procedure linkage table
464 entry for the symbol. */
465 HOWTO (R_PPC_PLTREL24, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 TRUE, /* pc_relative */
471 complain_overflow_signed, /* complain_on_overflow */
472 bfd_elf_generic_reloc, /* special_function */
473 "R_PPC_PLTREL24", /* name */
474 FALSE, /* partial_inplace */
476 0x3fffffc, /* dst_mask */
477 TRUE), /* pcrel_offset */
479 /* This is used only by the dynamic linker. The symbol should exist
480 both in the object being run and in some shared library. The
481 dynamic linker copies the data addressed by the symbol from the
482 shared library into the object, because the object being
483 run has to have the data at some particular address. */
484 HOWTO (R_PPC_COPY, /* type */
486 2, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_bitfield, /* complain_on_overflow */
491 bfd_elf_generic_reloc, /* special_function */
492 "R_PPC_COPY", /* name */
493 FALSE, /* partial_inplace */
496 FALSE), /* pcrel_offset */
498 /* Like R_PPC_ADDR32, but used when setting global offset table
500 HOWTO (R_PPC_GLOB_DAT, /* type */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_bitfield, /* complain_on_overflow */
507 bfd_elf_generic_reloc, /* special_function */
508 "R_PPC_GLOB_DAT", /* name */
509 FALSE, /* partial_inplace */
511 0xffffffff, /* dst_mask */
512 FALSE), /* pcrel_offset */
514 /* Marks a procedure linkage table entry for a symbol. */
515 HOWTO (R_PPC_JMP_SLOT, /* type */
517 2, /* size (0 = byte, 1 = short, 2 = long) */
519 FALSE, /* pc_relative */
521 complain_overflow_bitfield, /* complain_on_overflow */
522 bfd_elf_generic_reloc, /* special_function */
523 "R_PPC_JMP_SLOT", /* name */
524 FALSE, /* partial_inplace */
527 FALSE), /* pcrel_offset */
529 /* Used only by the dynamic linker. When the object is run, this
530 longword is set to the load address of the object, plus the
532 HOWTO (R_PPC_RELATIVE, /* type */
534 2, /* size (0 = byte, 1 = short, 2 = long) */
536 FALSE, /* pc_relative */
538 complain_overflow_bitfield, /* complain_on_overflow */
539 bfd_elf_generic_reloc, /* special_function */
540 "R_PPC_RELATIVE", /* name */
541 FALSE, /* partial_inplace */
543 0xffffffff, /* dst_mask */
544 FALSE), /* pcrel_offset */
546 /* Like R_PPC_REL24, but uses the value of the symbol within the
547 object rather than the final value. Normally used for
548 _GLOBAL_OFFSET_TABLE_. */
549 HOWTO (R_PPC_LOCAL24PC, /* type */
551 2, /* size (0 = byte, 1 = short, 2 = long) */
553 TRUE, /* pc_relative */
555 complain_overflow_signed, /* complain_on_overflow */
556 bfd_elf_generic_reloc, /* special_function */
557 "R_PPC_LOCAL24PC", /* name */
558 FALSE, /* partial_inplace */
560 0x3fffffc, /* dst_mask */
561 TRUE), /* pcrel_offset */
563 /* Like R_PPC_ADDR32, but may be unaligned. */
564 HOWTO (R_PPC_UADDR32, /* type */
566 2, /* size (0 = byte, 1 = short, 2 = long) */
568 FALSE, /* pc_relative */
570 complain_overflow_bitfield, /* complain_on_overflow */
571 bfd_elf_generic_reloc, /* special_function */
572 "R_PPC_UADDR32", /* name */
573 FALSE, /* partial_inplace */
575 0xffffffff, /* dst_mask */
576 FALSE), /* pcrel_offset */
578 /* Like R_PPC_ADDR16, but may be unaligned. */
579 HOWTO (R_PPC_UADDR16, /* type */
581 1, /* size (0 = byte, 1 = short, 2 = long) */
583 FALSE, /* pc_relative */
585 complain_overflow_bitfield, /* complain_on_overflow */
586 bfd_elf_generic_reloc, /* special_function */
587 "R_PPC_UADDR16", /* name */
588 FALSE, /* partial_inplace */
590 0xffff, /* dst_mask */
591 FALSE), /* pcrel_offset */
593 /* 32-bit PC relative */
594 HOWTO (R_PPC_REL32, /* type */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
598 TRUE, /* pc_relative */
600 complain_overflow_bitfield, /* complain_on_overflow */
601 bfd_elf_generic_reloc, /* special_function */
602 "R_PPC_REL32", /* name */
603 FALSE, /* partial_inplace */
605 0xffffffff, /* dst_mask */
606 TRUE), /* pcrel_offset */
608 /* 32-bit relocation to the symbol's procedure linkage table.
609 FIXME: not supported. */
610 HOWTO (R_PPC_PLT32, /* type */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
614 FALSE, /* pc_relative */
616 complain_overflow_bitfield, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_PPC_PLT32", /* name */
619 FALSE, /* partial_inplace */
622 FALSE), /* pcrel_offset */
624 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
625 FIXME: not supported. */
626 HOWTO (R_PPC_PLTREL32, /* type */
628 2, /* size (0 = byte, 1 = short, 2 = long) */
630 TRUE, /* pc_relative */
632 complain_overflow_bitfield, /* complain_on_overflow */
633 bfd_elf_generic_reloc, /* special_function */
634 "R_PPC_PLTREL32", /* name */
635 FALSE, /* partial_inplace */
638 TRUE), /* pcrel_offset */
640 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
642 HOWTO (R_PPC_PLT16_LO, /* type */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
646 FALSE, /* pc_relative */
648 complain_overflow_dont, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC_PLT16_LO", /* name */
651 FALSE, /* partial_inplace */
653 0xffff, /* dst_mask */
654 FALSE), /* pcrel_offset */
656 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
658 HOWTO (R_PPC_PLT16_HI, /* type */
660 1, /* size (0 = byte, 1 = short, 2 = long) */
662 FALSE, /* pc_relative */
664 complain_overflow_bitfield, /* complain_on_overflow */
665 bfd_elf_generic_reloc, /* special_function */
666 "R_PPC_PLT16_HI", /* name */
667 FALSE, /* partial_inplace */
669 0xffff, /* dst_mask */
670 FALSE), /* pcrel_offset */
672 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
674 HOWTO (R_PPC_PLT16_HA, /* type */
676 1, /* size (0 = byte, 1 = short, 2 = long) */
678 FALSE, /* pc_relative */
680 complain_overflow_bitfield, /* complain_on_overflow */
681 ppc_elf_addr16_ha_reloc, /* special_function */
682 "R_PPC_PLT16_HA", /* name */
683 FALSE, /* partial_inplace */
685 0xffff, /* dst_mask */
686 FALSE), /* pcrel_offset */
688 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
690 HOWTO (R_PPC_SDAREL16, /* type */
692 1, /* size (0 = byte, 1 = short, 2 = long) */
694 FALSE, /* pc_relative */
696 complain_overflow_signed, /* complain_on_overflow */
697 bfd_elf_generic_reloc, /* special_function */
698 "R_PPC_SDAREL16", /* name */
699 FALSE, /* partial_inplace */
701 0xffff, /* dst_mask */
702 FALSE), /* pcrel_offset */
704 /* 16-bit section relative relocation. */
705 HOWTO (R_PPC_SECTOFF, /* type */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
709 FALSE, /* pc_relative */
711 complain_overflow_bitfield, /* complain_on_overflow */
712 bfd_elf_generic_reloc, /* special_function */
713 "R_PPC_SECTOFF", /* name */
714 FALSE, /* partial_inplace */
716 0xffff, /* dst_mask */
717 FALSE), /* pcrel_offset */
719 /* 16-bit lower half section relative relocation. */
720 HOWTO (R_PPC_SECTOFF_LO, /* type */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
724 FALSE, /* pc_relative */
726 complain_overflow_dont, /* complain_on_overflow */
727 bfd_elf_generic_reloc, /* special_function */
728 "R_PPC_SECTOFF_LO", /* name */
729 FALSE, /* partial_inplace */
731 0xffff, /* dst_mask */
732 FALSE), /* pcrel_offset */
734 /* 16-bit upper half section relative relocation. */
735 HOWTO (R_PPC_SECTOFF_HI, /* type */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
739 FALSE, /* pc_relative */
741 complain_overflow_bitfield, /* complain_on_overflow */
742 bfd_elf_generic_reloc, /* special_function */
743 "R_PPC_SECTOFF_HI", /* name */
744 FALSE, /* partial_inplace */
746 0xffff, /* dst_mask */
747 FALSE), /* pcrel_offset */
749 /* 16-bit upper half adjusted section relative relocation. */
750 HOWTO (R_PPC_SECTOFF_HA, /* type */
752 1, /* size (0 = byte, 1 = short, 2 = long) */
754 FALSE, /* pc_relative */
756 complain_overflow_bitfield, /* complain_on_overflow */
757 ppc_elf_addr16_ha_reloc, /* special_function */
758 "R_PPC_SECTOFF_HA", /* name */
759 FALSE, /* partial_inplace */
761 0xffff, /* dst_mask */
762 FALSE), /* pcrel_offset */
764 /* Marker relocs for TLS. */
767 2, /* size (0 = byte, 1 = short, 2 = long) */
769 FALSE, /* pc_relative */
771 complain_overflow_dont, /* complain_on_overflow */
772 bfd_elf_generic_reloc, /* special_function */
773 "R_PPC_TLS", /* name */
774 FALSE, /* partial_inplace */
777 FALSE), /* pcrel_offset */
781 2, /* size (0 = byte, 1 = short, 2 = long) */
783 FALSE, /* pc_relative */
785 complain_overflow_dont, /* complain_on_overflow */
786 bfd_elf_generic_reloc, /* special_function */
787 "R_PPC_TLSGD", /* name */
788 FALSE, /* partial_inplace */
791 FALSE), /* pcrel_offset */
795 2, /* size (0 = byte, 1 = short, 2 = long) */
797 FALSE, /* pc_relative */
799 complain_overflow_dont, /* complain_on_overflow */
800 bfd_elf_generic_reloc, /* special_function */
801 "R_PPC_TLSLD", /* name */
802 FALSE, /* partial_inplace */
805 FALSE), /* pcrel_offset */
807 /* Computes the load module index of the load module that contains the
808 definition of its TLS sym. */
809 HOWTO (R_PPC_DTPMOD32,
811 2, /* size (0 = byte, 1 = short, 2 = long) */
813 FALSE, /* pc_relative */
815 complain_overflow_dont, /* complain_on_overflow */
816 ppc_elf_unhandled_reloc, /* special_function */
817 "R_PPC_DTPMOD32", /* name */
818 FALSE, /* partial_inplace */
820 0xffffffff, /* dst_mask */
821 FALSE), /* pcrel_offset */
823 /* Computes a dtv-relative displacement, the difference between the value
824 of sym+add and the base address of the thread-local storage block that
825 contains the definition of sym, minus 0x8000. */
826 HOWTO (R_PPC_DTPREL32,
828 2, /* size (0 = byte, 1 = short, 2 = long) */
830 FALSE, /* pc_relative */
832 complain_overflow_dont, /* complain_on_overflow */
833 ppc_elf_unhandled_reloc, /* special_function */
834 "R_PPC_DTPREL32", /* name */
835 FALSE, /* partial_inplace */
837 0xffffffff, /* dst_mask */
838 FALSE), /* pcrel_offset */
840 /* A 16 bit dtprel reloc. */
841 HOWTO (R_PPC_DTPREL16,
843 1, /* size (0 = byte, 1 = short, 2 = long) */
845 FALSE, /* pc_relative */
847 complain_overflow_signed, /* complain_on_overflow */
848 ppc_elf_unhandled_reloc, /* special_function */
849 "R_PPC_DTPREL16", /* name */
850 FALSE, /* partial_inplace */
852 0xffff, /* dst_mask */
853 FALSE), /* pcrel_offset */
855 /* Like DTPREL16, but no overflow. */
856 HOWTO (R_PPC_DTPREL16_LO,
858 1, /* size (0 = byte, 1 = short, 2 = long) */
860 FALSE, /* pc_relative */
862 complain_overflow_dont, /* complain_on_overflow */
863 ppc_elf_unhandled_reloc, /* special_function */
864 "R_PPC_DTPREL16_LO", /* name */
865 FALSE, /* partial_inplace */
867 0xffff, /* dst_mask */
868 FALSE), /* pcrel_offset */
870 /* Like DTPREL16_LO, but next higher group of 16 bits. */
871 HOWTO (R_PPC_DTPREL16_HI,
873 1, /* size (0 = byte, 1 = short, 2 = long) */
875 FALSE, /* pc_relative */
877 complain_overflow_dont, /* complain_on_overflow */
878 ppc_elf_unhandled_reloc, /* special_function */
879 "R_PPC_DTPREL16_HI", /* name */
880 FALSE, /* partial_inplace */
882 0xffff, /* dst_mask */
883 FALSE), /* pcrel_offset */
885 /* Like DTPREL16_HI, but adjust for low 16 bits. */
886 HOWTO (R_PPC_DTPREL16_HA,
888 1, /* size (0 = byte, 1 = short, 2 = long) */
890 FALSE, /* pc_relative */
892 complain_overflow_dont, /* complain_on_overflow */
893 ppc_elf_unhandled_reloc, /* special_function */
894 "R_PPC_DTPREL16_HA", /* name */
895 FALSE, /* partial_inplace */
897 0xffff, /* dst_mask */
898 FALSE), /* pcrel_offset */
900 /* Computes a tp-relative displacement, the difference between the value of
901 sym+add and the value of the thread pointer (r13). */
902 HOWTO (R_PPC_TPREL32,
904 2, /* size (0 = byte, 1 = short, 2 = long) */
906 FALSE, /* pc_relative */
908 complain_overflow_dont, /* complain_on_overflow */
909 ppc_elf_unhandled_reloc, /* special_function */
910 "R_PPC_TPREL32", /* name */
911 FALSE, /* partial_inplace */
913 0xffffffff, /* dst_mask */
914 FALSE), /* pcrel_offset */
916 /* A 16 bit tprel reloc. */
917 HOWTO (R_PPC_TPREL16,
919 1, /* size (0 = byte, 1 = short, 2 = long) */
921 FALSE, /* pc_relative */
923 complain_overflow_signed, /* complain_on_overflow */
924 ppc_elf_unhandled_reloc, /* special_function */
925 "R_PPC_TPREL16", /* name */
926 FALSE, /* partial_inplace */
928 0xffff, /* dst_mask */
929 FALSE), /* pcrel_offset */
931 /* Like TPREL16, but no overflow. */
932 HOWTO (R_PPC_TPREL16_LO,
934 1, /* size (0 = byte, 1 = short, 2 = long) */
936 FALSE, /* pc_relative */
938 complain_overflow_dont, /* complain_on_overflow */
939 ppc_elf_unhandled_reloc, /* special_function */
940 "R_PPC_TPREL16_LO", /* name */
941 FALSE, /* partial_inplace */
943 0xffff, /* dst_mask */
944 FALSE), /* pcrel_offset */
946 /* Like TPREL16_LO, but next higher group of 16 bits. */
947 HOWTO (R_PPC_TPREL16_HI,
949 1, /* size (0 = byte, 1 = short, 2 = long) */
951 FALSE, /* pc_relative */
953 complain_overflow_dont, /* complain_on_overflow */
954 ppc_elf_unhandled_reloc, /* special_function */
955 "R_PPC_TPREL16_HI", /* name */
956 FALSE, /* partial_inplace */
958 0xffff, /* dst_mask */
959 FALSE), /* pcrel_offset */
961 /* Like TPREL16_HI, but adjust for low 16 bits. */
962 HOWTO (R_PPC_TPREL16_HA,
964 1, /* size (0 = byte, 1 = short, 2 = long) */
966 FALSE, /* pc_relative */
968 complain_overflow_dont, /* complain_on_overflow */
969 ppc_elf_unhandled_reloc, /* special_function */
970 "R_PPC_TPREL16_HA", /* name */
971 FALSE, /* partial_inplace */
973 0xffff, /* dst_mask */
974 FALSE), /* pcrel_offset */
976 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
977 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
978 to the first entry. */
979 HOWTO (R_PPC_GOT_TLSGD16,
981 1, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE, /* pc_relative */
985 complain_overflow_signed, /* complain_on_overflow */
986 ppc_elf_unhandled_reloc, /* special_function */
987 "R_PPC_GOT_TLSGD16", /* name */
988 FALSE, /* partial_inplace */
990 0xffff, /* dst_mask */
991 FALSE), /* pcrel_offset */
993 /* Like GOT_TLSGD16, but no overflow. */
994 HOWTO (R_PPC_GOT_TLSGD16_LO,
996 1, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE, /* pc_relative */
1000 complain_overflow_dont, /* complain_on_overflow */
1001 ppc_elf_unhandled_reloc, /* special_function */
1002 "R_PPC_GOT_TLSGD16_LO", /* name */
1003 FALSE, /* partial_inplace */
1005 0xffff, /* dst_mask */
1006 FALSE), /* pcrel_offset */
1008 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1009 HOWTO (R_PPC_GOT_TLSGD16_HI,
1010 16, /* rightshift */
1011 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 FALSE, /* pc_relative */
1015 complain_overflow_dont, /* complain_on_overflow */
1016 ppc_elf_unhandled_reloc, /* special_function */
1017 "R_PPC_GOT_TLSGD16_HI", /* name */
1018 FALSE, /* partial_inplace */
1020 0xffff, /* dst_mask */
1021 FALSE), /* pcrel_offset */
1023 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1024 HOWTO (R_PPC_GOT_TLSGD16_HA,
1025 16, /* rightshift */
1026 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 FALSE, /* pc_relative */
1030 complain_overflow_dont, /* complain_on_overflow */
1031 ppc_elf_unhandled_reloc, /* special_function */
1032 "R_PPC_GOT_TLSGD16_HA", /* name */
1033 FALSE, /* partial_inplace */
1035 0xffff, /* dst_mask */
1036 FALSE), /* pcrel_offset */
1038 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1039 with values (sym+add)@dtpmod and zero, and computes the offset to the
1041 HOWTO (R_PPC_GOT_TLSLD16,
1043 1, /* size (0 = byte, 1 = short, 2 = long) */
1045 FALSE, /* pc_relative */
1047 complain_overflow_signed, /* complain_on_overflow */
1048 ppc_elf_unhandled_reloc, /* special_function */
1049 "R_PPC_GOT_TLSLD16", /* name */
1050 FALSE, /* partial_inplace */
1052 0xffff, /* dst_mask */
1053 FALSE), /* pcrel_offset */
1055 /* Like GOT_TLSLD16, but no overflow. */
1056 HOWTO (R_PPC_GOT_TLSLD16_LO,
1058 1, /* size (0 = byte, 1 = short, 2 = long) */
1060 FALSE, /* pc_relative */
1062 complain_overflow_dont, /* complain_on_overflow */
1063 ppc_elf_unhandled_reloc, /* special_function */
1064 "R_PPC_GOT_TLSLD16_LO", /* name */
1065 FALSE, /* partial_inplace */
1067 0xffff, /* dst_mask */
1068 FALSE), /* pcrel_offset */
1070 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1071 HOWTO (R_PPC_GOT_TLSLD16_HI,
1072 16, /* rightshift */
1073 1, /* size (0 = byte, 1 = short, 2 = long) */
1075 FALSE, /* pc_relative */
1077 complain_overflow_dont, /* complain_on_overflow */
1078 ppc_elf_unhandled_reloc, /* special_function */
1079 "R_PPC_GOT_TLSLD16_HI", /* name */
1080 FALSE, /* partial_inplace */
1082 0xffff, /* dst_mask */
1083 FALSE), /* pcrel_offset */
1085 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1086 HOWTO (R_PPC_GOT_TLSLD16_HA,
1087 16, /* rightshift */
1088 1, /* size (0 = byte, 1 = short, 2 = long) */
1090 FALSE, /* pc_relative */
1092 complain_overflow_dont, /* complain_on_overflow */
1093 ppc_elf_unhandled_reloc, /* special_function */
1094 "R_PPC_GOT_TLSLD16_HA", /* name */
1095 FALSE, /* partial_inplace */
1097 0xffff, /* dst_mask */
1098 FALSE), /* pcrel_offset */
1100 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1101 the offset to the entry. */
1102 HOWTO (R_PPC_GOT_DTPREL16,
1104 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 FALSE, /* pc_relative */
1108 complain_overflow_signed, /* complain_on_overflow */
1109 ppc_elf_unhandled_reloc, /* special_function */
1110 "R_PPC_GOT_DTPREL16", /* name */
1111 FALSE, /* partial_inplace */
1113 0xffff, /* dst_mask */
1114 FALSE), /* pcrel_offset */
1116 /* Like GOT_DTPREL16, but no overflow. */
1117 HOWTO (R_PPC_GOT_DTPREL16_LO,
1119 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 FALSE, /* pc_relative */
1123 complain_overflow_dont, /* complain_on_overflow */
1124 ppc_elf_unhandled_reloc, /* special_function */
1125 "R_PPC_GOT_DTPREL16_LO", /* name */
1126 FALSE, /* partial_inplace */
1128 0xffff, /* dst_mask */
1129 FALSE), /* pcrel_offset */
1131 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1132 HOWTO (R_PPC_GOT_DTPREL16_HI,
1133 16, /* rightshift */
1134 1, /* size (0 = byte, 1 = short, 2 = long) */
1136 FALSE, /* pc_relative */
1138 complain_overflow_dont, /* complain_on_overflow */
1139 ppc_elf_unhandled_reloc, /* special_function */
1140 "R_PPC_GOT_DTPREL16_HI", /* name */
1141 FALSE, /* partial_inplace */
1143 0xffff, /* dst_mask */
1144 FALSE), /* pcrel_offset */
1146 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1147 HOWTO (R_PPC_GOT_DTPREL16_HA,
1148 16, /* rightshift */
1149 1, /* size (0 = byte, 1 = short, 2 = long) */
1151 FALSE, /* pc_relative */
1153 complain_overflow_dont, /* complain_on_overflow */
1154 ppc_elf_unhandled_reloc, /* special_function */
1155 "R_PPC_GOT_DTPREL16_HA", /* name */
1156 FALSE, /* partial_inplace */
1158 0xffff, /* dst_mask */
1159 FALSE), /* pcrel_offset */
1161 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1162 offset to the entry. */
1163 HOWTO (R_PPC_GOT_TPREL16,
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE, /* pc_relative */
1169 complain_overflow_signed, /* complain_on_overflow */
1170 ppc_elf_unhandled_reloc, /* special_function */
1171 "R_PPC_GOT_TPREL16", /* name */
1172 FALSE, /* partial_inplace */
1174 0xffff, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1177 /* Like GOT_TPREL16, but no overflow. */
1178 HOWTO (R_PPC_GOT_TPREL16_LO,
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE, /* pc_relative */
1184 complain_overflow_dont, /* complain_on_overflow */
1185 ppc_elf_unhandled_reloc, /* special_function */
1186 "R_PPC_GOT_TPREL16_LO", /* name */
1187 FALSE, /* partial_inplace */
1189 0xffff, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1192 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1193 HOWTO (R_PPC_GOT_TPREL16_HI,
1194 16, /* rightshift */
1195 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 FALSE, /* pc_relative */
1199 complain_overflow_dont, /* complain_on_overflow */
1200 ppc_elf_unhandled_reloc, /* special_function */
1201 "R_PPC_GOT_TPREL16_HI", /* name */
1202 FALSE, /* partial_inplace */
1204 0xffff, /* dst_mask */
1205 FALSE), /* pcrel_offset */
1207 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1208 HOWTO (R_PPC_GOT_TPREL16_HA,
1209 16, /* rightshift */
1210 1, /* size (0 = byte, 1 = short, 2 = long) */
1212 FALSE, /* pc_relative */
1214 complain_overflow_dont, /* complain_on_overflow */
1215 ppc_elf_unhandled_reloc, /* special_function */
1216 "R_PPC_GOT_TPREL16_HA", /* name */
1217 FALSE, /* partial_inplace */
1219 0xffff, /* dst_mask */
1220 FALSE), /* pcrel_offset */
1222 /* The remaining relocs are from the Embedded ELF ABI, and are not
1223 in the SVR4 ELF ABI. */
1225 /* 32 bit value resulting from the addend minus the symbol. */
1226 HOWTO (R_PPC_EMB_NADDR32, /* type */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 FALSE, /* pc_relative */
1232 complain_overflow_bitfield, /* complain_on_overflow */
1233 bfd_elf_generic_reloc, /* special_function */
1234 "R_PPC_EMB_NADDR32", /* name */
1235 FALSE, /* partial_inplace */
1237 0xffffffff, /* dst_mask */
1238 FALSE), /* pcrel_offset */
1240 /* 16 bit value resulting from the addend minus the symbol. */
1241 HOWTO (R_PPC_EMB_NADDR16, /* type */
1243 1, /* size (0 = byte, 1 = short, 2 = long) */
1245 FALSE, /* pc_relative */
1247 complain_overflow_bitfield, /* complain_on_overflow */
1248 bfd_elf_generic_reloc, /* special_function */
1249 "R_PPC_EMB_NADDR16", /* name */
1250 FALSE, /* partial_inplace */
1252 0xffff, /* dst_mask */
1253 FALSE), /* pcrel_offset */
1255 /* 16 bit value resulting from the addend minus the symbol. */
1256 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1258 1, /* size (0 = byte, 1 = short, 2 = long) */
1260 FALSE, /* pc_relative */
1262 complain_overflow_dont,/* complain_on_overflow */
1263 bfd_elf_generic_reloc, /* special_function */
1264 "R_PPC_EMB_ADDR16_LO", /* name */
1265 FALSE, /* partial_inplace */
1267 0xffff, /* dst_mask */
1268 FALSE), /* pcrel_offset */
1270 /* The high order 16 bits of the addend minus the symbol. */
1271 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1272 16, /* rightshift */
1273 1, /* size (0 = byte, 1 = short, 2 = long) */
1275 FALSE, /* pc_relative */
1277 complain_overflow_dont, /* complain_on_overflow */
1278 bfd_elf_generic_reloc, /* special_function */
1279 "R_PPC_EMB_NADDR16_HI", /* name */
1280 FALSE, /* partial_inplace */
1282 0xffff, /* dst_mask */
1283 FALSE), /* pcrel_offset */
1285 /* The high order 16 bits of the result of the addend minus the address,
1286 plus 1 if the contents of the low 16 bits, treated as a signed number,
1288 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1289 16, /* rightshift */
1290 1, /* size (0 = byte, 1 = short, 2 = long) */
1292 FALSE, /* pc_relative */
1294 complain_overflow_dont, /* complain_on_overflow */
1295 ppc_elf_addr16_ha_reloc, /* special_function */
1296 "R_PPC_EMB_NADDR16_HA", /* name */
1297 FALSE, /* partial_inplace */
1299 0xffff, /* dst_mask */
1300 FALSE), /* pcrel_offset */
1302 /* 16 bit value resulting from allocating a 4 byte word to hold an
1303 address in the .sdata section, and returning the offset from
1304 _SDA_BASE_ for that relocation. */
1305 HOWTO (R_PPC_EMB_SDAI16, /* type */
1307 1, /* size (0 = byte, 1 = short, 2 = long) */
1309 FALSE, /* pc_relative */
1311 complain_overflow_signed, /* complain_on_overflow */
1312 bfd_elf_generic_reloc, /* special_function */
1313 "R_PPC_EMB_SDAI16", /* name */
1314 FALSE, /* partial_inplace */
1316 0xffff, /* dst_mask */
1317 FALSE), /* pcrel_offset */
1319 /* 16 bit value resulting from allocating a 4 byte word to hold an
1320 address in the .sdata2 section, and returning the offset from
1321 _SDA2_BASE_ for that relocation. */
1322 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1324 1, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE, /* pc_relative */
1328 complain_overflow_signed, /* complain_on_overflow */
1329 bfd_elf_generic_reloc, /* special_function */
1330 "R_PPC_EMB_SDA2I16", /* name */
1331 FALSE, /* partial_inplace */
1333 0xffff, /* dst_mask */
1334 FALSE), /* pcrel_offset */
1336 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1337 small data items. */
1338 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1340 1, /* size (0 = byte, 1 = short, 2 = long) */
1342 FALSE, /* pc_relative */
1344 complain_overflow_signed, /* complain_on_overflow */
1345 bfd_elf_generic_reloc, /* special_function */
1346 "R_PPC_EMB_SDA2REL", /* name */
1347 FALSE, /* partial_inplace */
1349 0xffff, /* dst_mask */
1350 FALSE), /* pcrel_offset */
1352 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1353 signed offset from the appropriate base, and filling in the register
1354 field with the appropriate register (0, 2, or 13). */
1355 HOWTO (R_PPC_EMB_SDA21, /* type */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1359 FALSE, /* pc_relative */
1361 complain_overflow_signed, /* complain_on_overflow */
1362 bfd_elf_generic_reloc, /* special_function */
1363 "R_PPC_EMB_SDA21", /* name */
1364 FALSE, /* partial_inplace */
1366 0xffff, /* dst_mask */
1367 FALSE), /* pcrel_offset */
1369 /* Relocation not handled: R_PPC_EMB_MRKREF */
1370 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1371 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1372 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1373 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1374 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1376 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1377 in the 16 bit signed offset from the appropriate base, and filling in the
1378 register field with the appropriate register (0, 2, or 13). */
1379 HOWTO (R_PPC_EMB_RELSDA, /* type */
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 FALSE, /* pc_relative */
1385 complain_overflow_signed, /* complain_on_overflow */
1386 bfd_elf_generic_reloc, /* special_function */
1387 "R_PPC_EMB_RELSDA", /* name */
1388 FALSE, /* partial_inplace */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1393 HOWTO (R_PPC_IRELATIVE, /* type */
1395 2, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE, /* pc_relative */
1399 complain_overflow_bitfield, /* complain_on_overflow */
1400 bfd_elf_generic_reloc, /* special_function */
1401 "R_PPC_IRELATIVE", /* name */
1402 FALSE, /* partial_inplace */
1404 0xffffffff, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1407 /* A 16 bit relative relocation. */
1408 HOWTO (R_PPC_REL16, /* type */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 TRUE, /* pc_relative */
1414 complain_overflow_bitfield, /* complain_on_overflow */
1415 bfd_elf_generic_reloc, /* special_function */
1416 "R_PPC_REL16", /* name */
1417 FALSE, /* partial_inplace */
1419 0xffff, /* dst_mask */
1420 TRUE), /* pcrel_offset */
1422 /* A 16 bit relative relocation without overflow. */
1423 HOWTO (R_PPC_REL16_LO, /* type */
1425 1, /* size (0 = byte, 1 = short, 2 = long) */
1427 TRUE, /* pc_relative */
1429 complain_overflow_dont,/* complain_on_overflow */
1430 bfd_elf_generic_reloc, /* special_function */
1431 "R_PPC_REL16_LO", /* name */
1432 FALSE, /* partial_inplace */
1434 0xffff, /* dst_mask */
1435 TRUE), /* pcrel_offset */
1437 /* The high order 16 bits of a relative address. */
1438 HOWTO (R_PPC_REL16_HI, /* type */
1439 16, /* rightshift */
1440 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 TRUE, /* pc_relative */
1444 complain_overflow_dont, /* complain_on_overflow */
1445 bfd_elf_generic_reloc, /* special_function */
1446 "R_PPC_REL16_HI", /* name */
1447 FALSE, /* partial_inplace */
1449 0xffff, /* dst_mask */
1450 TRUE), /* pcrel_offset */
1452 /* The high order 16 bits of a relative address, plus 1 if the contents of
1453 the low 16 bits, treated as a signed number, is negative. */
1454 HOWTO (R_PPC_REL16_HA, /* type */
1455 16, /* rightshift */
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1458 TRUE, /* pc_relative */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 ppc_elf_addr16_ha_reloc, /* special_function */
1462 "R_PPC_REL16_HA", /* name */
1463 FALSE, /* partial_inplace */
1465 0xffff, /* dst_mask */
1466 TRUE), /* pcrel_offset */
1468 /* GNU extension to record C++ vtable hierarchy. */
1469 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1471 0, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE, /* pc_relative */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 NULL, /* special_function */
1477 "R_PPC_GNU_VTINHERIT", /* name */
1478 FALSE, /* partial_inplace */
1481 FALSE), /* pcrel_offset */
1483 /* GNU extension to record C++ vtable member usage. */
1484 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1486 0, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE, /* pc_relative */
1490 complain_overflow_dont, /* complain_on_overflow */
1491 NULL, /* special_function */
1492 "R_PPC_GNU_VTENTRY", /* name */
1493 FALSE, /* partial_inplace */
1496 FALSE), /* pcrel_offset */
1498 /* Phony reloc to handle AIX style TOC entries. */
1499 HOWTO (R_PPC_TOC16, /* type */
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE, /* pc_relative */
1505 complain_overflow_signed, /* complain_on_overflow */
1506 bfd_elf_generic_reloc, /* special_function */
1507 "R_PPC_TOC16", /* name */
1508 FALSE, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1514 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1517 ppc_elf_howto_init (void)
1519 unsigned int i, type;
1522 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1525 type = ppc_elf_howto_raw[i].type;
1526 if (type >= (sizeof (ppc_elf_howto_table)
1527 / sizeof (ppc_elf_howto_table[0])))
1529 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1533 static reloc_howto_type *
1534 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1535 bfd_reloc_code_real_type code)
1537 enum elf_ppc_reloc_type r;
1539 /* Initialize howto table if not already done. */
1540 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1541 ppc_elf_howto_init ();
1548 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1549 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1550 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1551 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1552 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1553 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1554 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1555 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1556 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1557 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1558 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1559 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1560 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1561 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1562 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1563 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1564 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1565 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1566 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1567 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1568 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1569 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1570 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1571 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1572 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1573 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1574 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1575 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1576 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1577 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1578 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1579 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1580 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1581 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1582 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1583 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1584 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1585 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1586 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1587 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1588 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1589 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1590 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1591 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1592 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1593 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1594 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1595 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1596 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1597 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1598 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1599 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1600 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1601 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1602 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1603 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1604 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1605 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1606 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1607 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1608 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1609 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1610 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1611 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1612 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1613 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1614 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1615 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1616 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1617 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1618 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1619 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1620 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1621 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1622 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1623 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1624 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1625 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1626 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1627 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1628 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1629 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1630 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1631 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1632 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1633 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1634 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1637 return ppc_elf_howto_table[r];
1640 static reloc_howto_type *
1641 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1647 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1649 if (ppc_elf_howto_raw[i].name != NULL
1650 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1651 return &ppc_elf_howto_raw[i];
1656 /* Set the howto pointer for a PowerPC ELF reloc. */
1659 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1661 Elf_Internal_Rela *dst)
1663 /* Initialize howto table if not already done. */
1664 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1665 ppc_elf_howto_init ();
1667 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1668 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1670 /* Just because the above assert didn't trigger doesn't mean that
1671 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1672 if (!cache_ptr->howto)
1674 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1675 abfd, ELF32_R_TYPE (dst->r_info));
1676 bfd_set_error (bfd_error_bad_value);
1678 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1682 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1684 static bfd_reloc_status_type
1685 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1686 arelent *reloc_entry,
1688 void *data ATTRIBUTE_UNUSED,
1689 asection *input_section,
1691 char **error_message ATTRIBUTE_UNUSED)
1695 if (output_bfd != NULL)
1697 reloc_entry->address += input_section->output_offset;
1698 return bfd_reloc_ok;
1701 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1702 return bfd_reloc_outofrange;
1704 if (bfd_is_com_section (symbol->section))
1707 relocation = symbol->value;
1709 relocation += symbol->section->output_section->vma;
1710 relocation += symbol->section->output_offset;
1711 relocation += reloc_entry->addend;
1712 if (reloc_entry->howto->pc_relative)
1713 relocation -= reloc_entry->address;
1715 reloc_entry->addend += (relocation & 0x8000) << 1;
1717 return bfd_reloc_continue;
1720 static bfd_reloc_status_type
1721 ppc_elf_unhandled_reloc (bfd *abfd,
1722 arelent *reloc_entry,
1725 asection *input_section,
1727 char **error_message)
1729 /* If this is a relocatable link (output_bfd test tells us), just
1730 call the generic function. Any adjustment will be done at final
1732 if (output_bfd != NULL)
1733 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1734 input_section, output_bfd, error_message);
1736 if (error_message != NULL)
1738 static char buf[60];
1739 sprintf (buf, _("generic linker can't handle %s"),
1740 reloc_entry->howto->name);
1741 *error_message = buf;
1743 return bfd_reloc_dangerous;
1746 /* Sections created by the linker. */
1748 typedef struct elf_linker_section
1750 /* Pointer to the bfd section. */
1754 /* Associated bss section name. */
1755 const char *bss_name;
1756 /* Associated symbol name. */
1757 const char *sym_name;
1758 /* Associated symbol. */
1759 struct elf_link_hash_entry *sym;
1760 } elf_linker_section_t;
1762 /* Linked list of allocated pointer entries. This hangs off of the
1763 symbol lists, and provides allows us to return different pointers,
1764 based on different addend's. */
1766 typedef struct elf_linker_section_pointers
1768 /* next allocated pointer for this symbol */
1769 struct elf_linker_section_pointers *next;
1770 /* offset of pointer from beginning of section */
1774 /* which linker section this is */
1775 elf_linker_section_t *lsect;
1776 } elf_linker_section_pointers_t;
1778 struct ppc_elf_obj_tdata
1780 struct elf_obj_tdata elf;
1782 /* A mapping from local symbols to offsets into the various linker
1783 sections added. This is index by the symbol index. */
1784 elf_linker_section_pointers_t **linker_section_pointers;
1786 /* Flags used to auto-detect plt type. */
1787 unsigned int makes_plt_call : 1;
1788 unsigned int has_rel16 : 1;
1791 #define ppc_elf_tdata(bfd) \
1792 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1794 #define elf_local_ptr_offsets(bfd) \
1795 (ppc_elf_tdata (bfd)->linker_section_pointers)
1797 #define is_ppc_elf(bfd) \
1798 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1799 && elf_object_id (bfd) == PPC32_ELF_DATA)
1801 /* Override the generic function because we store some extras. */
1804 ppc_elf_mkobject (bfd *abfd)
1806 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1810 /* Fix bad default arch selected for a 32 bit input bfd when the
1811 default is 64 bit. */
1814 ppc_elf_object_p (bfd *abfd)
1816 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1818 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1820 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1822 /* Relies on arch after 64 bit default being 32 bit default. */
1823 abfd->arch_info = abfd->arch_info->next;
1824 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1830 /* Function to set whether a module needs the -mrelocatable bit set. */
1833 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1835 BFD_ASSERT (!elf_flags_init (abfd)
1836 || elf_elfheader (abfd)->e_flags == flags);
1838 elf_elfheader (abfd)->e_flags = flags;
1839 elf_flags_init (abfd) = TRUE;
1843 /* Support for core dump NOTE sections. */
1846 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1851 switch (note->descsz)
1856 case 268: /* Linux/PPC. */
1858 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1861 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
1870 /* Make a ".reg/999" section. */
1871 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1872 size, note->descpos + offset);
1876 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1878 switch (note->descsz)
1883 case 128: /* Linux/PPC elf_prpsinfo. */
1884 elf_tdata (abfd)->core_program
1885 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1886 elf_tdata (abfd)->core_command
1887 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1890 /* Note that for some reason, a spurious space is tacked
1891 onto the end of the args in some (at least one anyway)
1892 implementations, so strip it off if it exists. */
1895 char *command = elf_tdata (abfd)->core_command;
1896 int n = strlen (command);
1898 if (0 < n && command[n - 1] == ' ')
1899 command[n - 1] = '\0';
1906 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1918 va_start (ap, note_type);
1919 memset (data, 0, 32);
1920 strncpy (data + 32, va_arg (ap, const char *), 16);
1921 strncpy (data + 48, va_arg (ap, const char *), 80);
1923 return elfcore_write_note (abfd, buf, bufsiz,
1924 "CORE", note_type, data, sizeof (data));
1935 va_start (ap, note_type);
1936 memset (data, 0, 72);
1937 pid = va_arg (ap, long);
1938 bfd_put_32 (abfd, pid, data + 24);
1939 cursig = va_arg (ap, int);
1940 bfd_put_16 (abfd, cursig, data + 12);
1941 greg = va_arg (ap, const void *);
1942 memcpy (data + 72, greg, 192);
1943 memset (data + 264, 0, 4);
1945 return elfcore_write_note (abfd, buf, bufsiz,
1946 "CORE", note_type, data, sizeof (data));
1951 /* Return address for Ith PLT stub in section PLT, for relocation REL
1952 or (bfd_vma) -1 if it should not be included. */
1955 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1956 const asection *plt ATTRIBUTE_UNUSED,
1959 return rel->address;
1962 /* Handle a PowerPC specific section when reading an object file. This
1963 is called when bfd_section_from_shdr finds a section with an unknown
1967 ppc_elf_section_from_shdr (bfd *abfd,
1968 Elf_Internal_Shdr *hdr,
1975 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1978 newsect = hdr->bfd_section;
1979 flags = bfd_get_section_flags (abfd, newsect);
1980 if (hdr->sh_flags & SHF_EXCLUDE)
1981 flags |= SEC_EXCLUDE;
1983 if (hdr->sh_type == SHT_ORDERED)
1984 flags |= SEC_SORT_ENTRIES;
1986 bfd_set_section_flags (abfd, newsect, flags);
1990 /* Set up any other section flags and such that may be necessary. */
1993 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1994 Elf_Internal_Shdr *shdr,
1997 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1998 shdr->sh_type = SHT_ORDERED;
2003 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2004 need to bump up the number of section headers. */
2007 ppc_elf_additional_program_headers (bfd *abfd,
2008 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2013 s = bfd_get_section_by_name (abfd, ".sbss2");
2014 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2017 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2018 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2024 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2025 .PPC.EMB.sbss0 a normal section, and not a bss section so
2026 that the linker doesn't crater when trying to make more than
2029 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2031 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2032 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2033 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2034 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2035 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2036 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2037 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2038 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2039 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2040 { NULL, 0, 0, 0, 0 }
2043 /* This is what we want for new plt/got. */
2044 static struct bfd_elf_special_section ppc_alt_plt =
2045 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2047 static const struct bfd_elf_special_section *
2048 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2050 const struct bfd_elf_special_section *ssect;
2052 /* See if this is one of the special sections. */
2053 if (sec->name == NULL)
2056 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2060 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2061 ssect = &ppc_alt_plt;
2065 return _bfd_elf_get_sec_type_attr (abfd, sec);
2068 /* Very simple linked list structure for recording apuinfo values. */
2069 typedef struct apuinfo_list
2071 struct apuinfo_list *next;
2072 unsigned long value;
2076 static apuinfo_list *head;
2077 static bfd_boolean apuinfo_set;
2080 apuinfo_list_init (void)
2083 apuinfo_set = FALSE;
2087 apuinfo_list_add (unsigned long value)
2089 apuinfo_list *entry = head;
2091 while (entry != NULL)
2093 if (entry->value == value)
2095 entry = entry->next;
2098 entry = bfd_malloc (sizeof (* entry));
2102 entry->value = value;
2108 apuinfo_list_length (void)
2110 apuinfo_list *entry;
2111 unsigned long count;
2113 for (entry = head, count = 0;
2115 entry = entry->next)
2121 static inline unsigned long
2122 apuinfo_list_element (unsigned long number)
2124 apuinfo_list * entry;
2128 entry = entry->next)
2131 return entry ? entry->value : 0;
2135 apuinfo_list_finish (void)
2137 apuinfo_list *entry;
2139 for (entry = head; entry;)
2141 apuinfo_list *next = entry->next;
2149 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2150 #define APUINFO_LABEL "APUinfo"
2152 /* Scan the input BFDs and create a linked list of
2153 the APUinfo values that will need to be emitted. */
2156 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2160 char *buffer = NULL;
2161 bfd_size_type largest_input_size = 0;
2163 unsigned long length;
2164 const char *error_message = NULL;
2166 if (link_info == NULL)
2169 apuinfo_list_init ();
2171 /* Read in the input sections contents. */
2172 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2174 unsigned long datum;
2176 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2180 error_message = _("corrupt %s section in %B");
2181 length = asec->size;
2186 if (largest_input_size < asec->size)
2190 largest_input_size = asec->size;
2191 buffer = bfd_malloc (largest_input_size);
2196 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2197 || (bfd_bread (buffer, length, ibfd) != length))
2199 error_message = _("unable to read in %s section from %B");
2203 /* Verify the contents of the header. Note - we have to
2204 extract the values this way in order to allow for a
2205 host whose endian-ness is different from the target. */
2206 datum = bfd_get_32 (ibfd, buffer);
2207 if (datum != sizeof APUINFO_LABEL)
2210 datum = bfd_get_32 (ibfd, buffer + 8);
2214 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2217 /* Get the number of bytes used for apuinfo entries. */
2218 datum = bfd_get_32 (ibfd, buffer + 4);
2219 if (datum + 20 != length)
2222 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2223 for (i = 0; i < datum; i += 4)
2224 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2227 error_message = NULL;
2231 /* Compute the size of the output section. */
2232 unsigned num_entries = apuinfo_list_length ();
2234 /* Set the output section size, if it exists. */
2235 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2237 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2240 error_message = _("warning: unable to set size of %s section in %B");
2249 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2252 /* Prevent the output section from accumulating the input sections'
2253 contents. We have already stored this in our linked list structure. */
2256 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2257 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2259 bfd_byte *contents ATTRIBUTE_UNUSED)
2261 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2264 /* Finally we can generate the output section. */
2267 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2272 unsigned num_entries;
2273 bfd_size_type length;
2275 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2282 length = asec->size;
2286 buffer = bfd_malloc (length);
2289 (*_bfd_error_handler)
2290 (_("failed to allocate space for new APUinfo section."));
2294 /* Create the apuinfo header. */
2295 num_entries = apuinfo_list_length ();
2296 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2297 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2298 bfd_put_32 (abfd, 0x2, buffer + 8);
2299 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2302 for (i = 0; i < num_entries; i++)
2304 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2308 if (length != asec->size)
2309 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2311 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2312 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2316 apuinfo_list_finish ();
2320 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2322 bfd_byte buf[GLINK_ENTRY_SIZE];
2324 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2327 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2328 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2329 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2330 && bfd_get_32 (abfd, buf + 12) == BCTR);
2334 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2336 bfd_vma vma = *(bfd_vma *) ptr;
2337 return ((section->flags & SEC_ALLOC) != 0
2338 && section->vma <= vma
2339 && vma < section->vma + section->size);
2343 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2344 long dynsymcount, asymbol **dynsyms,
2347 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2348 asection *plt, *relplt, *dynamic, *glink;
2349 bfd_vma glink_vma = 0;
2350 bfd_vma resolv_vma = 0;
2361 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2364 if (dynsymcount <= 0)
2367 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2371 plt = bfd_get_section_by_name (abfd, ".plt");
2375 /* Call common code to handle old-style executable PLTs. */
2376 if (elf_section_flags (plt) & SHF_EXECINSTR)
2377 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2378 dynsymcount, dynsyms, ret);
2380 /* If this object was prelinked, the prelinker stored the address
2381 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2382 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2383 if (dynamic != NULL)
2385 bfd_byte *dynbuf, *extdyn, *extdynend;
2387 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2389 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2392 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2393 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2396 extdynend = extdyn + dynamic->size;
2397 for (; extdyn < extdynend; extdyn += extdynsize)
2399 Elf_Internal_Dyn dyn;
2400 (*swap_dyn_in) (abfd, extdyn, &dyn);
2402 if (dyn.d_tag == DT_NULL)
2405 if (dyn.d_tag == DT_PPC_GOT)
2407 unsigned int g_o_t = dyn.d_un.d_val;
2408 asection *got = bfd_get_section_by_name (abfd, ".got");
2410 && bfd_get_section_contents (abfd, got, buf,
2411 g_o_t - got->vma + 4, 4))
2412 glink_vma = bfd_get_32 (abfd, buf);
2419 /* Otherwise we read the first plt entry. */
2422 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2423 glink_vma = bfd_get_32 (abfd, buf);
2429 /* The .glink section usually does not survive the final
2430 link; search for the section (usually .text) where the
2431 glink stubs now reside. */
2432 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2436 /* Determine glink PLT resolver by reading the relative branch
2437 from the first glink stub. */
2438 if (bfd_get_section_contents (abfd, glink, buf,
2439 glink_vma - glink->vma, 4))
2441 unsigned int insn = bfd_get_32 (abfd, buf);
2443 /* The first glink stub may either branch to the resolver ... */
2445 if ((insn & ~0x3fffffc) == 0)
2446 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2448 /* ... or fall through a bunch of NOPs. */
2449 else if ((insn ^ B ^ NOP) == 0)
2451 bfd_get_section_contents (abfd, glink, buf,
2452 glink_vma - glink->vma + i, 4);
2454 if (bfd_get_32 (abfd, buf) != NOP)
2456 resolv_vma = glink_vma + i;
2461 count = relplt->size / sizeof (Elf32_External_Rela);
2462 stub_vma = glink_vma - (bfd_vma) count * 16;
2463 /* If the stubs are those for -shared/-pie then we might have
2464 multiple stubs for each plt entry. If that is the case then
2465 there is no way to associate stubs with their plt entries short
2466 of figuring out the GOT pointer value used in the stub. */
2467 if (!is_nonpic_glink_stub (abfd, glink,
2468 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2471 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2472 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2475 size = count * sizeof (asymbol);
2476 p = relplt->relocation;
2477 for (i = 0; i < count; i++, p++)
2479 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2481 size += sizeof ("+0x") - 1 + 8;
2484 size += sizeof (asymbol) + sizeof ("__glink");
2487 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2489 s = *ret = bfd_malloc (size);
2493 names = (char *) (s + count + 1 + (resolv_vma != 0));
2494 p = relplt->relocation;
2495 for (i = 0; i < count; i++, p++)
2499 *s = **p->sym_ptr_ptr;
2500 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2501 we are defining a symbol, ensure one of them is set. */
2502 if ((s->flags & BSF_LOCAL) == 0)
2503 s->flags |= BSF_GLOBAL;
2504 s->flags |= BSF_SYNTHETIC;
2506 s->value = stub_vma - glink->vma;
2509 len = strlen ((*p->sym_ptr_ptr)->name);
2510 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2514 memcpy (names, "+0x", sizeof ("+0x") - 1);
2515 names += sizeof ("+0x") - 1;
2516 bfd_sprintf_vma (abfd, names, p->addend);
2517 names += strlen (names);
2519 memcpy (names, "@plt", sizeof ("@plt"));
2520 names += sizeof ("@plt");
2525 /* Add a symbol at the start of the glink branch table. */
2526 memset (s, 0, sizeof *s);
2528 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2530 s->value = glink_vma - glink->vma;
2532 memcpy (names, "__glink", sizeof ("__glink"));
2533 names += sizeof ("__glink");
2539 /* Add a symbol for the glink PLT resolver. */
2540 memset (s, 0, sizeof *s);
2542 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2544 s->value = resolv_vma - glink->vma;
2546 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2547 names += sizeof ("__glink_PLTresolve");
2555 /* The following functions are specific to the ELF linker, while
2556 functions above are used generally. They appear in this file more
2557 or less in the order in which they are called. eg.
2558 ppc_elf_check_relocs is called early in the link process,
2559 ppc_elf_finish_dynamic_sections is one of the last functions
2562 /* The PPC linker needs to keep track of the number of relocs that it
2563 decides to copy as dynamic relocs in check_relocs for each symbol.
2564 This is so that it can later discard them if they are found to be
2565 unnecessary. We store the information in a field extending the
2566 regular ELF linker hash table. */
2568 struct ppc_elf_dyn_relocs
2570 struct ppc_elf_dyn_relocs *next;
2572 /* The input section of the reloc. */
2575 /* Total number of relocs copied for the input section. */
2576 bfd_size_type count;
2578 /* Number of pc-relative relocs copied for the input section. */
2579 bfd_size_type pc_count;
2582 /* Track PLT entries needed for a given symbol. We might need more
2583 than one glink entry per symbol when generating a pic binary. */
2586 struct plt_entry *next;
2588 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2589 This field stores the offset into .got2 used to initialise the
2590 GOT pointer reg. It will always be at least 32768. (Current
2591 gcc always uses an offset of 32768, but ld -r will pack .got2
2592 sections together resulting in larger offsets). */
2595 /* The .got2 section. */
2598 /* PLT refcount or offset. */
2601 bfd_signed_vma refcount;
2605 /* .glink stub offset. */
2606 bfd_vma glink_offset;
2609 /* Of those relocs that might be copied as dynamic relocs, this function
2610 selects those that must be copied when linking a shared library,
2611 even when the symbol is local. */
2614 must_be_dyn_reloc (struct bfd_link_info *info,
2615 enum elf_ppc_reloc_type r_type)
2624 case R_PPC_REL14_BRTAKEN:
2625 case R_PPC_REL14_BRNTAKEN:
2631 case R_PPC_TPREL16_LO:
2632 case R_PPC_TPREL16_HI:
2633 case R_PPC_TPREL16_HA:
2634 return !info->executable;
2638 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2639 copying dynamic variables from a shared lib into an app's dynbss
2640 section, and instead use a dynamic relocation to point into the
2642 #define ELIMINATE_COPY_RELOCS 1
2644 /* PPC ELF linker hash entry. */
2646 struct ppc_elf_link_hash_entry
2648 struct elf_link_hash_entry elf;
2650 /* If this symbol is used in the linker created sections, the processor
2651 specific backend uses this field to map the field into the offset
2652 from the beginning of the section. */
2653 elf_linker_section_pointers_t *linker_section_pointer;
2655 /* Track dynamic relocs copied for this symbol. */
2656 struct ppc_elf_dyn_relocs *dyn_relocs;
2658 /* Contexts in which symbol is used in the GOT (or TOC).
2659 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2660 corresponding relocs are encountered during check_relocs.
2661 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2662 indicate the corresponding GOT entry type is not needed. */
2663 #define TLS_GD 1 /* GD reloc. */
2664 #define TLS_LD 2 /* LD reloc. */
2665 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2666 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2667 #define TLS_TLS 16 /* Any TLS reloc. */
2668 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2669 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
2672 /* Nonzero if we have seen a small data relocation referring to this
2674 unsigned char has_sda_refs;
2677 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2679 /* PPC ELF linker hash table. */
2681 struct ppc_elf_link_hash_table
2683 struct elf_link_hash_table elf;
2685 /* Short-cuts to get to dynamic linker sections. */
2697 elf_linker_section_t sdata[2];
2700 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2703 /* The .got.plt section (VxWorks only)*/
2706 /* Shortcut to __tls_get_addr. */
2707 struct elf_link_hash_entry *tls_get_addr;
2709 /* The bfd that forced an old-style PLT. */
2712 /* TLS local dynamic got entry handling. */
2714 bfd_signed_vma refcount;
2718 /* Offset of branch table to PltResolve function in glink. */
2719 bfd_vma glink_pltresolve;
2721 /* Size of reserved GOT entries. */
2722 unsigned int got_header_size;
2723 /* Non-zero if allocating the header left a gap. */
2724 unsigned int got_gap;
2726 /* The type of PLT we have chosen to use. */
2727 enum ppc_elf_plt_type plt_type;
2729 /* Set if we should emit symbols for stubs. */
2730 unsigned int emit_stub_syms:1;
2732 /* Set if __tls_get_addr optimization should not be done. */
2733 unsigned int no_tls_get_addr_opt:1;
2735 /* True if the target system is VxWorks. */
2736 unsigned int is_vxworks:1;
2738 /* The size of PLT entries. */
2740 /* The distance between adjacent PLT slots. */
2742 /* The size of the first PLT entry. */
2743 int plt_initial_entry_size;
2745 /* Small local sym cache. */
2746 struct sym_cache sym_cache;
2749 /* Rename some of the generic section flags to better document how they
2752 /* Nonzero if this section has TLS related relocations. */
2753 #define has_tls_reloc sec_flg0
2755 /* Nonzero if this section has a call to __tls_get_addr. */
2756 #define has_tls_get_addr_call sec_flg1
2758 /* Get the PPC ELF linker hash table from a link_info structure. */
2760 #define ppc_elf_hash_table(p) \
2761 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2762 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
2764 /* Create an entry in a PPC ELF linker hash table. */
2766 static struct bfd_hash_entry *
2767 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2768 struct bfd_hash_table *table,
2771 /* Allocate the structure if it has not already been allocated by a
2775 entry = bfd_hash_allocate (table,
2776 sizeof (struct ppc_elf_link_hash_entry));
2781 /* Call the allocation method of the superclass. */
2782 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2785 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2786 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2787 ppc_elf_hash_entry (entry)->tls_mask = 0;
2788 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
2794 /* Create a PPC ELF linker hash table. */
2796 static struct bfd_link_hash_table *
2797 ppc_elf_link_hash_table_create (bfd *abfd)
2799 struct ppc_elf_link_hash_table *ret;
2801 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2805 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2806 ppc_elf_link_hash_newfunc,
2807 sizeof (struct ppc_elf_link_hash_entry),
2814 ret->elf.init_plt_refcount.refcount = 0;
2815 ret->elf.init_plt_refcount.glist = NULL;
2816 ret->elf.init_plt_offset.offset = 0;
2817 ret->elf.init_plt_offset.glist = NULL;
2819 ret->sdata[0].name = ".sdata";
2820 ret->sdata[0].sym_name = "_SDA_BASE_";
2821 ret->sdata[0].bss_name = ".sbss";
2823 ret->sdata[1].name = ".sdata2";
2824 ret->sdata[1].sym_name = "_SDA2_BASE_";
2825 ret->sdata[1].bss_name = ".sbss2";
2827 ret->plt_entry_size = 12;
2828 ret->plt_slot_size = 8;
2829 ret->plt_initial_entry_size = 72;
2831 return &ret->elf.root;
2834 /* Create .got and the related sections. */
2837 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2839 struct ppc_elf_link_hash_table *htab;
2843 if (!_bfd_elf_create_got_section (abfd, info))
2846 htab = ppc_elf_hash_table (info);
2847 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2851 if (htab->is_vxworks)
2853 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2859 /* The powerpc .got has a blrl instruction in it. Mark it
2861 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2862 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2863 if (!bfd_set_section_flags (abfd, s, flags))
2867 htab->relgot = bfd_get_section_by_name (abfd, ".rela.got");
2875 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
2877 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2881 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
2882 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2883 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
2886 || !bfd_set_section_alignment (abfd, s, 4))
2889 flags = SEC_ALLOC | SEC_LINKER_CREATED;
2890 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
2893 || !bfd_set_section_alignment (abfd, s, 4))
2896 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2897 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2898 s = bfd_make_section_with_flags (abfd, ".rela.iplt", flags);
2901 || ! bfd_set_section_alignment (abfd, s, 2))
2906 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2907 to output sections (just like _bfd_elf_create_dynamic_sections has
2908 to create .dynbss and .rela.bss). */
2911 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2913 struct ppc_elf_link_hash_table *htab;
2917 htab = ppc_elf_hash_table (info);
2919 if (htab->got == NULL
2920 && !ppc_elf_create_got (abfd, info))
2923 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2926 if (htab->glink == NULL
2927 && !ppc_elf_create_glink (abfd, info))
2930 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2931 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2932 SEC_ALLOC | SEC_LINKER_CREATED);
2939 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2940 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2941 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2942 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2945 || ! bfd_set_section_alignment (abfd, s, 2))
2949 if (htab->is_vxworks
2950 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2953 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2954 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2958 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2959 if (htab->plt_type == PLT_VXWORKS)
2960 /* The VxWorks PLT is a loaded section with contents. */
2961 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2962 return bfd_set_section_flags (abfd, s, flags);
2965 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2968 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2969 struct elf_link_hash_entry *dir,
2970 struct elf_link_hash_entry *ind)
2972 struct ppc_elf_link_hash_entry *edir, *eind;
2974 edir = (struct ppc_elf_link_hash_entry *) dir;
2975 eind = (struct ppc_elf_link_hash_entry *) ind;
2977 if (eind->dyn_relocs != NULL)
2979 if (edir->dyn_relocs != NULL)
2981 struct ppc_elf_dyn_relocs **pp;
2982 struct ppc_elf_dyn_relocs *p;
2984 /* Add reloc counts against the indirect sym to the direct sym
2985 list. Merge any entries against the same section. */
2986 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2988 struct ppc_elf_dyn_relocs *q;
2990 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2991 if (q->sec == p->sec)
2993 q->pc_count += p->pc_count;
2994 q->count += p->count;
3001 *pp = edir->dyn_relocs;
3004 edir->dyn_relocs = eind->dyn_relocs;
3005 eind->dyn_relocs = NULL;
3008 edir->tls_mask |= eind->tls_mask;
3009 edir->has_sda_refs |= eind->has_sda_refs;
3011 /* If called to transfer flags for a weakdef during processing
3012 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3013 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3014 if (!(ELIMINATE_COPY_RELOCS
3015 && eind->elf.root.type != bfd_link_hash_indirect
3016 && edir->elf.dynamic_adjusted))
3017 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3019 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3020 edir->elf.ref_regular |= eind->elf.ref_regular;
3021 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3022 edir->elf.needs_plt |= eind->elf.needs_plt;
3023 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3025 /* If we were called to copy over info for a weak sym, that's all. */
3026 if (eind->elf.root.type != bfd_link_hash_indirect)
3029 /* Copy over the GOT refcount entries that we may have already seen to
3030 the symbol which just became indirect. */
3031 edir->elf.got.refcount += eind->elf.got.refcount;
3032 eind->elf.got.refcount = 0;
3034 /* And plt entries. */
3035 if (eind->elf.plt.plist != NULL)
3037 if (edir->elf.plt.plist != NULL)
3039 struct plt_entry **entp;
3040 struct plt_entry *ent;
3042 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3044 struct plt_entry *dent;
3046 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3047 if (dent->sec == ent->sec && dent->addend == ent->addend)
3049 dent->plt.refcount += ent->plt.refcount;
3056 *entp = edir->elf.plt.plist;
3059 edir->elf.plt.plist = eind->elf.plt.plist;
3060 eind->elf.plt.plist = NULL;
3063 if (eind->elf.dynindx != -1)
3065 if (edir->elf.dynindx != -1)
3066 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3067 edir->elf.dynstr_index);
3068 edir->elf.dynindx = eind->elf.dynindx;
3069 edir->elf.dynstr_index = eind->elf.dynstr_index;
3070 eind->elf.dynindx = -1;
3071 eind->elf.dynstr_index = 0;
3075 /* Hook called by the linker routine which adds symbols from an object
3076 file. We use it to put .comm items in .sbss, and not .bss. */
3079 ppc_elf_add_symbol_hook (bfd *abfd,
3080 struct bfd_link_info *info,
3081 Elf_Internal_Sym *sym,
3082 const char **namep ATTRIBUTE_UNUSED,
3083 flagword *flagsp ATTRIBUTE_UNUSED,
3087 if (sym->st_shndx == SHN_COMMON
3088 && !info->relocatable
3089 && is_ppc_elf (info->output_bfd)
3090 && sym->st_size <= elf_gp_size (abfd))
3092 /* Common symbols less than or equal to -G nn bytes are automatically
3094 struct ppc_elf_link_hash_table *htab;
3096 htab = ppc_elf_hash_table (info);
3097 if (htab->sbss == NULL)
3099 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3101 if (!htab->elf.dynobj)
3102 htab->elf.dynobj = abfd;
3104 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3107 if (htab->sbss == NULL)
3112 *valp = sym->st_size;
3115 if ((abfd->flags & DYNAMIC) == 0
3116 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3117 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3118 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3124 create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3126 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3128 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3130 if (lsect->sym == NULL)
3132 if (lsect->sym->root.type == bfd_link_hash_new)
3133 lsect->sym->non_elf = 0;
3134 lsect->sym->ref_regular = 1;
3135 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3139 /* Create a special linker section. */
3142 ppc_elf_create_linker_section (bfd *abfd,
3143 struct bfd_link_info *info,
3145 elf_linker_section_t *lsect)
3147 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3150 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3151 | SEC_LINKER_CREATED);
3153 /* Record the first bfd that needs the special sections. */
3154 if (!htab->elf.dynobj)
3155 htab->elf.dynobj = abfd;
3157 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3161 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3165 return create_sdata_sym (info, lsect);
3168 /* Find a linker generated pointer with a given addend and type. */
3170 static elf_linker_section_pointers_t *
3171 elf_find_pointer_linker_section
3172 (elf_linker_section_pointers_t *linker_pointers,
3174 elf_linker_section_t *lsect)
3176 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3177 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3178 return linker_pointers;
3183 /* Allocate a pointer to live in a linker created section. */
3186 elf_create_pointer_linker_section (bfd *abfd,
3187 elf_linker_section_t *lsect,
3188 struct elf_link_hash_entry *h,
3189 const Elf_Internal_Rela *rel)
3191 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3192 elf_linker_section_pointers_t *linker_section_ptr;
3193 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3196 BFD_ASSERT (lsect != NULL);
3198 /* Is this a global symbol? */
3201 struct ppc_elf_link_hash_entry *eh;
3203 /* Has this symbol already been allocated? If so, our work is done. */
3204 eh = (struct ppc_elf_link_hash_entry *) h;
3205 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3210 ptr_linker_section_ptr = &eh->linker_section_pointer;
3214 BFD_ASSERT (is_ppc_elf (abfd));
3216 /* Allocation of a pointer to a local symbol. */
3217 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3219 /* Allocate a table to hold the local symbols if first time. */
3222 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3225 amt *= sizeof (elf_linker_section_pointers_t *);
3226 ptr = bfd_zalloc (abfd, amt);
3231 elf_local_ptr_offsets (abfd) = ptr;
3234 /* Has this symbol already been allocated? If so, our work is done. */
3235 if (elf_find_pointer_linker_section (ptr[r_symndx],
3240 ptr_linker_section_ptr = &ptr[r_symndx];
3243 /* Allocate space for a pointer in the linker section, and allocate
3244 a new pointer record from internal memory. */
3245 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3246 amt = sizeof (elf_linker_section_pointers_t);
3247 linker_section_ptr = bfd_alloc (abfd, amt);
3249 if (!linker_section_ptr)
3252 linker_section_ptr->next = *ptr_linker_section_ptr;
3253 linker_section_ptr->addend = rel->r_addend;
3254 linker_section_ptr->lsect = lsect;
3255 *ptr_linker_section_ptr = linker_section_ptr;
3257 linker_section_ptr->offset = lsect->section->size;
3258 lsect->section->size += 4;
3262 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3263 lsect->name, (long) linker_section_ptr->offset,
3264 (long) lsect->section->size);
3270 static struct plt_entry **
3271 update_local_sym_info (bfd *abfd,
3272 Elf_Internal_Shdr *symtab_hdr,
3273 unsigned long r_symndx,
3276 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3277 struct plt_entry **local_plt;
3278 char *local_got_tls_masks;
3280 if (local_got_refcounts == NULL)
3282 bfd_size_type size = symtab_hdr->sh_info;
3284 size *= (sizeof (*local_got_refcounts)
3285 + sizeof (*local_plt)
3286 + sizeof (*local_got_tls_masks));
3287 local_got_refcounts = bfd_zalloc (abfd, size);
3288 if (local_got_refcounts == NULL)
3290 elf_local_got_refcounts (abfd) = local_got_refcounts;
3293 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3294 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3295 local_got_tls_masks[r_symndx] |= tls_type;
3296 if (tls_type != PLT_IFUNC)
3297 local_got_refcounts[r_symndx] += 1;
3298 return local_plt + r_symndx;
3302 update_plt_info (bfd *abfd, struct plt_entry **plist,
3303 asection *sec, bfd_vma addend)
3305 struct plt_entry *ent;
3309 for (ent = *plist; ent != NULL; ent = ent->next)
3310 if (ent->sec == sec && ent->addend == addend)
3314 bfd_size_type amt = sizeof (*ent);
3315 ent = bfd_alloc (abfd, amt);
3320 ent->addend = addend;
3321 ent->plt.refcount = 0;
3324 ent->plt.refcount += 1;
3328 static struct plt_entry *
3329 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3331 struct plt_entry *ent;
3335 for (ent = *plist; ent != NULL; ent = ent->next)
3336 if (ent->sec == sec && ent->addend == addend)
3342 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3344 return (r_type == R_PPC_PLTREL24
3345 || r_type == R_PPC_LOCAL24PC
3346 || r_type == R_PPC_REL24
3347 || r_type == R_PPC_REL14
3348 || r_type == R_PPC_REL14_BRTAKEN
3349 || r_type == R_PPC_REL14_BRNTAKEN
3350 || r_type == R_PPC_ADDR24
3351 || r_type == R_PPC_ADDR14
3352 || r_type == R_PPC_ADDR14_BRTAKEN
3353 || r_type == R_PPC_ADDR14_BRNTAKEN);
3357 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3359 (*_bfd_error_handler)
3360 (_("%B: relocation %s cannot be used when making a shared object"),
3362 ppc_elf_howto_table[r_type]->name);
3363 bfd_set_error (bfd_error_bad_value);
3366 /* Look through the relocs for a section during the first phase, and
3367 allocate space in the global offset table or procedure linkage
3371 ppc_elf_check_relocs (bfd *abfd,
3372 struct bfd_link_info *info,
3374 const Elf_Internal_Rela *relocs)
3376 struct ppc_elf_link_hash_table *htab;
3377 Elf_Internal_Shdr *symtab_hdr;
3378 struct elf_link_hash_entry **sym_hashes;
3379 const Elf_Internal_Rela *rel;
3380 const Elf_Internal_Rela *rel_end;
3381 asection *got2, *sreloc;
3382 struct elf_link_hash_entry *tga;
3384 if (info->relocatable)
3387 /* Don't do anything special with non-loaded, non-alloced sections.
3388 In particular, any relocs in such sections should not affect GOT
3389 and PLT reference counting (ie. we don't allow them to create GOT
3390 or PLT entries), there's no possibility or desire to optimize TLS
3391 relocs, and there's not much point in propagating relocs to shared
3392 libs that the dynamic linker won't relocate. */
3393 if ((sec->flags & SEC_ALLOC) == 0)
3397 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3401 BFD_ASSERT (is_ppc_elf (abfd));
3403 /* Initialize howto table if not already done. */
3404 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3405 ppc_elf_howto_init ();
3407 htab = ppc_elf_hash_table (info);
3408 if (htab->glink == NULL)
3410 if (htab->elf.dynobj == NULL)
3411 htab->elf.dynobj = abfd;
3412 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3415 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3416 FALSE, FALSE, TRUE);
3417 symtab_hdr = &elf_symtab_hdr (abfd);
3418 sym_hashes = elf_sym_hashes (abfd);
3419 got2 = bfd_get_section_by_name (abfd, ".got2");
3422 rel_end = relocs + sec->reloc_count;
3423 for (rel = relocs; rel < rel_end; rel++)
3425 unsigned long r_symndx;
3426 enum elf_ppc_reloc_type r_type;
3427 struct elf_link_hash_entry *h;
3430 r_symndx = ELF32_R_SYM (rel->r_info);
3431 if (r_symndx < symtab_hdr->sh_info)
3435 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3436 while (h->root.type == bfd_link_hash_indirect
3437 || h->root.type == bfd_link_hash_warning)
3438 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3441 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3442 This shows up in particular in an R_PPC_ADDR32 in the eabi
3445 && htab->got == NULL
3446 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3448 if (htab->elf.dynobj == NULL)
3449 htab->elf.dynobj = abfd;
3450 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3452 BFD_ASSERT (h == htab->elf.hgot);
3456 r_type = ELF32_R_TYPE (rel->r_info);
3457 if (h == NULL && !htab->is_vxworks)
3459 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3464 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3466 || is_branch_reloc (r_type)))
3468 struct plt_entry **ifunc;
3471 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3476 /* STT_GNU_IFUNC symbols must have a PLT entry;
3477 In a non-pie executable even when there are
3480 if (r_type == R_PPC_PLTREL24)
3482 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3484 addend = rel->r_addend;
3486 if (!update_plt_info (abfd, ifunc, got2, addend))
3491 if (!htab->is_vxworks
3492 && is_branch_reloc (r_type)
3497 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3498 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3499 /* We have a new-style __tls_get_addr call with a marker
3503 /* Mark this section as having an old-style call. */
3504 sec->has_tls_get_addr_call = 1;
3511 /* These special tls relocs tie a call to __tls_get_addr with
3512 its parameter symbol. */
3515 case R_PPC_GOT_TLSLD16:
3516 case R_PPC_GOT_TLSLD16_LO:
3517 case R_PPC_GOT_TLSLD16_HI:
3518 case R_PPC_GOT_TLSLD16_HA:
3519 tls_type = TLS_TLS | TLS_LD;
3522 case R_PPC_GOT_TLSGD16:
3523 case R_PPC_GOT_TLSGD16_LO:
3524 case R_PPC_GOT_TLSGD16_HI:
3525 case R_PPC_GOT_TLSGD16_HA:
3526 tls_type = TLS_TLS | TLS_GD;
3529 case R_PPC_GOT_TPREL16:
3530 case R_PPC_GOT_TPREL16_LO:
3531 case R_PPC_GOT_TPREL16_HI:
3532 case R_PPC_GOT_TPREL16_HA:
3533 if (!info->executable)
3534 info->flags |= DF_STATIC_TLS;
3535 tls_type = TLS_TLS | TLS_TPREL;
3538 case R_PPC_GOT_DTPREL16:
3539 case R_PPC_GOT_DTPREL16_LO:
3540 case R_PPC_GOT_DTPREL16_HI:
3541 case R_PPC_GOT_DTPREL16_HA:
3542 tls_type = TLS_TLS | TLS_DTPREL;
3544 sec->has_tls_reloc = 1;
3547 /* GOT16 relocations */
3549 case R_PPC_GOT16_LO:
3550 case R_PPC_GOT16_HI:
3551 case R_PPC_GOT16_HA:
3552 /* This symbol requires a global offset table entry. */
3553 if (htab->got == NULL)
3555 if (htab->elf.dynobj == NULL)
3556 htab->elf.dynobj = abfd;
3557 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3562 h->got.refcount += 1;
3563 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3566 /* This is a global offset table entry for a local symbol. */
3567 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3570 /* We may also need a plt entry if the symbol turns out to be
3572 if (h != NULL && !info->shared)
3574 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3579 /* Indirect .sdata relocation. */
3580 case R_PPC_EMB_SDAI16:
3583 bad_shared_reloc (abfd, r_type);
3586 if (htab->sdata[0].section == NULL
3587 && !ppc_elf_create_linker_section (abfd, info, 0,
3590 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3595 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3596 h->non_got_ref = TRUE;
3600 /* Indirect .sdata2 relocation. */
3601 case R_PPC_EMB_SDA2I16:
3604 bad_shared_reloc (abfd, r_type);
3607 if (htab->sdata[1].section == NULL
3608 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3611 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3616 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3617 h->non_got_ref = TRUE;
3621 case R_PPC_SDAREL16:
3622 if (htab->sdata[0].sym == NULL
3623 && !create_sdata_sym (info, &htab->sdata[0]))
3627 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3628 h->non_got_ref = TRUE;
3632 case R_PPC_EMB_SDA2REL:
3635 bad_shared_reloc (abfd, r_type);
3638 if (htab->sdata[1].sym == NULL
3639 && !create_sdata_sym (info, &htab->sdata[1]))
3643 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3644 h->non_got_ref = TRUE;
3648 case R_PPC_EMB_SDA21:
3649 case R_PPC_EMB_RELSDA:
3652 bad_shared_reloc (abfd, r_type);
3655 if (htab->sdata[0].sym == NULL
3656 && !create_sdata_sym (info, &htab->sdata[0]))
3658 if (htab->sdata[1].sym == NULL
3659 && !create_sdata_sym (info, &htab->sdata[1]))
3663 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3664 h->non_got_ref = TRUE;
3668 case R_PPC_EMB_NADDR32:
3669 case R_PPC_EMB_NADDR16:
3670 case R_PPC_EMB_NADDR16_LO:
3671 case R_PPC_EMB_NADDR16_HI:
3672 case R_PPC_EMB_NADDR16_HA:
3675 bad_shared_reloc (abfd, r_type);
3679 h->non_got_ref = TRUE;
3682 case R_PPC_PLTREL24:
3687 case R_PPC_PLTREL32:
3688 case R_PPC_PLT16_LO:
3689 case R_PPC_PLT16_HI:
3690 case R_PPC_PLT16_HA:
3692 fprintf (stderr, "Reloc requires a PLT entry\n");
3694 /* This symbol requires a procedure linkage table entry. We
3695 actually build the entry in finish_dynamic_symbol,
3696 because this might be a case of linking PIC code without
3697 linking in any dynamic objects, in which case we don't
3698 need to generate a procedure linkage table after all. */
3702 /* It does not make sense to have a procedure linkage
3703 table entry for a local symbol. */
3704 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3708 (long) rel->r_offset,
3709 ppc_elf_howto_table[r_type]->name);
3710 bfd_set_error (bfd_error_bad_value);
3717 if (r_type == R_PPC_PLTREL24)
3719 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3721 addend = rel->r_addend;
3724 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
3729 /* The following relocations don't need to propagate the
3730 relocation if linking a shared object since they are
3731 section relative. */
3733 case R_PPC_SECTOFF_LO:
3734 case R_PPC_SECTOFF_HI:
3735 case R_PPC_SECTOFF_HA:
3736 case R_PPC_DTPREL16:
3737 case R_PPC_DTPREL16_LO:
3738 case R_PPC_DTPREL16_HI:
3739 case R_PPC_DTPREL16_HA:
3744 case R_PPC_REL16_LO:
3745 case R_PPC_REL16_HI:
3746 case R_PPC_REL16_HA:
3747 ppc_elf_tdata (abfd)->has_rel16 = 1;
3750 /* These are just markers. */
3752 case R_PPC_EMB_MRKREF:
3756 case R_PPC_RELAX_PLT:
3757 case R_PPC_RELAX_PLTREL24:
3760 /* These should only appear in dynamic objects. */
3762 case R_PPC_GLOB_DAT:
3763 case R_PPC_JMP_SLOT:
3764 case R_PPC_RELATIVE:
3765 case R_PPC_IRELATIVE:
3768 /* These aren't handled yet. We'll report an error later. */
3770 case R_PPC_EMB_RELSEC16:
3771 case R_PPC_EMB_RELST_LO:
3772 case R_PPC_EMB_RELST_HI:
3773 case R_PPC_EMB_RELST_HA:
3774 case R_PPC_EMB_BIT_FLD:
3777 /* This refers only to functions defined in the shared library. */
3778 case R_PPC_LOCAL24PC:
3779 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3781 htab->plt_type = PLT_OLD;
3782 htab->old_bfd = abfd;
3786 /* This relocation describes the C++ object vtable hierarchy.
3787 Reconstruct it for later use during GC. */
3788 case R_PPC_GNU_VTINHERIT:
3789 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3793 /* This relocation describes which C++ vtable entries are actually
3794 used. Record for later use during GC. */
3795 case R_PPC_GNU_VTENTRY:
3796 BFD_ASSERT (h != NULL);
3798 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3802 /* We shouldn't really be seeing these. */
3805 case R_PPC_TPREL16_LO:
3806 case R_PPC_TPREL16_HI:
3807 case R_PPC_TPREL16_HA:
3808 if (!info->executable)
3809 info->flags |= DF_STATIC_TLS;
3813 case R_PPC_DTPMOD32:
3814 case R_PPC_DTPREL32:
3820 && (sec->flags & SEC_CODE) != 0
3822 && htab->plt_type == PLT_UNSET)
3824 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3825 the start of a function, which assembles to a REL32
3826 reference to .got2. If we detect one of these, then
3827 force the old PLT layout because the linker cannot
3828 reliably deduce the GOT pointer value needed for
3831 Elf_Internal_Sym *isym;
3833 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3838 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3841 htab->plt_type = PLT_OLD;
3842 htab->old_bfd = abfd;
3845 if (h == NULL || h == htab->elf.hgot)
3851 case R_PPC_ADDR16_LO:
3852 case R_PPC_ADDR16_HI:
3853 case R_PPC_ADDR16_HA:
3856 if (h != NULL && !info->shared)
3858 /* We may need a plt entry if the symbol turns out to be
3859 a function defined in a dynamic object. */
3860 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3863 /* We may need a copy reloc too. */
3865 h->pointer_equality_needed = 1;
3871 case R_PPC_REL14_BRTAKEN:
3872 case R_PPC_REL14_BRNTAKEN:
3875 if (h == htab->elf.hgot)
3877 if (htab->plt_type == PLT_UNSET)
3879 htab->plt_type = PLT_OLD;
3880 htab->old_bfd = abfd;
3888 case R_PPC_ADDR14_BRTAKEN:
3889 case R_PPC_ADDR14_BRNTAKEN:
3890 if (h != NULL && !info->shared)
3892 /* We may need a plt entry if the symbol turns out to be
3893 a function defined in a dynamic object. */
3895 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3901 /* If we are creating a shared library, and this is a reloc
3902 against a global symbol, or a non PC relative reloc
3903 against a local symbol, then we need to copy the reloc
3904 into the shared library. However, if we are linking with
3905 -Bsymbolic, we do not need to copy a reloc against a
3906 global symbol which is defined in an object we are
3907 including in the link (i.e., DEF_REGULAR is set). At
3908 this point we have not seen all the input files, so it is
3909 possible that DEF_REGULAR is not set now but will be set
3910 later (it is never cleared). In case of a weak definition,
3911 DEF_REGULAR may be cleared later by a strong definition in
3912 a shared library. We account for that possibility below by
3913 storing information in the dyn_relocs field of the hash
3914 table entry. A similar situation occurs when creating
3915 shared libraries and symbol visibility changes render the
3918 If on the other hand, we are creating an executable, we
3919 may need to keep relocations for symbols satisfied by a
3920 dynamic library if we manage to avoid copy relocs for the
3923 && (must_be_dyn_reloc (info, r_type)
3925 && (! info->symbolic
3926 || h->root.type == bfd_link_hash_defweak
3927 || !h->def_regular))))
3928 || (ELIMINATE_COPY_RELOCS
3931 && (h->root.type == bfd_link_hash_defweak
3932 || !h->def_regular)))
3934 struct ppc_elf_dyn_relocs *p;
3935 struct ppc_elf_dyn_relocs **rel_head;
3939 "ppc_elf_check_relocs needs to "
3940 "create relocation for %s\n",
3941 (h && h->root.root.string
3942 ? h->root.root.string : "<unknown>"));
3946 if (htab->elf.dynobj == NULL)
3947 htab->elf.dynobj = abfd;
3949 sreloc = _bfd_elf_make_dynamic_reloc_section
3950 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3956 /* If this is a global symbol, we count the number of
3957 relocations we need for this symbol. */
3960 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
3964 /* Track dynamic relocs needed for local syms too.
3965 We really need local syms available to do this
3969 Elf_Internal_Sym *isym;
3971 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3976 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3980 vpp = &elf_section_data (s)->local_dynrel;
3981 rel_head = (struct ppc_elf_dyn_relocs **) vpp;
3985 if (p == NULL || p->sec != sec)
3987 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3990 p->next = *rel_head;
3998 if (!must_be_dyn_reloc (info, r_type))
4010 /* Merge object attributes from IBFD into OBFD. Raise an error if
4011 there are conflicting attributes. */
4013 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4015 obj_attribute *in_attr, *in_attrs;
4016 obj_attribute *out_attr, *out_attrs;
4018 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4020 /* This is the first object. Copy the attributes. */
4021 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4023 /* Use the Tag_null value to indicate the attributes have been
4025 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4030 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4031 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4033 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4034 non-conflicting ones. */
4035 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4036 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4037 if (in_attr->i != out_attr->i)
4040 if (out_attr->i == 0)
4041 out_attr->i = in_attr->i;
4042 else if (in_attr->i == 0)
4044 else if (out_attr->i == 1 && in_attr->i == 2)
4046 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4047 else if (out_attr->i == 1 && in_attr->i == 3)
4049 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4051 else if (out_attr->i == 3 && in_attr->i == 1)
4053 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4055 else if (out_attr->i == 3 && in_attr->i == 2)
4057 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4059 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4061 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4062 else if (in_attr->i > 3)
4064 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4068 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4072 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4073 merge non-conflicting ones. */
4074 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4075 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4076 if (in_attr->i != out_attr->i)
4078 const char *in_abi = NULL, *out_abi = NULL;
4082 case 1: in_abi = "generic"; break;
4083 case 2: in_abi = "AltiVec"; break;
4084 case 3: in_abi = "SPE"; break;
4087 switch (out_attr->i)
4089 case 1: out_abi = "generic"; break;
4090 case 2: out_abi = "AltiVec"; break;
4091 case 3: out_abi = "SPE"; break;
4095 if (out_attr->i == 0)
4096 out_attr->i = in_attr->i;
4097 else if (in_attr->i == 0)
4099 /* For now, allow generic to transition to AltiVec or SPE
4100 without a warning. If GCC marked files with their stack
4101 alignment and used don't-care markings for files which are
4102 not affected by the vector ABI, we could warn about this
4104 else if (out_attr->i == 1)
4105 out_attr->i = in_attr->i;
4106 else if (in_attr->i == 1)
4108 else if (in_abi == NULL)
4110 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4112 else if (out_abi == NULL)
4114 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4118 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4119 ibfd, obfd, in_abi, out_abi);
4122 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4123 and merge non-conflicting ones. */
4124 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4125 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4126 if (in_attr->i != out_attr->i)
4129 if (out_attr->i == 0)
4130 out_attr->i = in_attr->i;
4131 else if (in_attr->i == 0)
4133 else if (out_attr->i == 1 && in_attr->i == 2)
4135 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4136 else if (out_attr->i == 2 && in_attr->i == 1)
4138 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4139 else if (in_attr->i > 2)
4141 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4145 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4149 /* Merge Tag_compatibility attributes and any common GNU ones. */
4150 _bfd_elf_merge_object_attributes (ibfd, obfd);
4155 /* Merge backend specific data from an object file to the output
4156 object file when linking. */
4159 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4165 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4168 /* Check if we have the same endianess. */
4169 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4172 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4175 new_flags = elf_elfheader (ibfd)->e_flags;
4176 old_flags = elf_elfheader (obfd)->e_flags;
4177 if (!elf_flags_init (obfd))
4179 /* First call, no flags set. */
4180 elf_flags_init (obfd) = TRUE;
4181 elf_elfheader (obfd)->e_flags = new_flags;
4184 /* Compatible flags are ok. */
4185 else if (new_flags == old_flags)
4188 /* Incompatible flags. */
4191 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4192 to be linked with either. */
4194 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4195 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4198 (*_bfd_error_handler)
4199 (_("%B: compiled with -mrelocatable and linked with "
4200 "modules compiled normally"), ibfd);
4202 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4203 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4206 (*_bfd_error_handler)
4207 (_("%B: compiled normally and linked with "
4208 "modules compiled with -mrelocatable"), ibfd);
4211 /* The output is -mrelocatable-lib iff both the input files are. */
4212 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4213 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4215 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4216 but each input file is either -mrelocatable or -mrelocatable-lib. */
4217 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4218 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4219 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4220 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4222 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4223 any module uses it. */
4224 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4226 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4227 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4229 /* Warn about any other mismatches. */
4230 if (new_flags != old_flags)
4233 (*_bfd_error_handler)
4234 (_("%B: uses different e_flags (0x%lx) fields "
4235 "than previous modules (0x%lx)"),
4236 ibfd, (long) new_flags, (long) old_flags);
4241 bfd_set_error (bfd_error_bad_value);
4249 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4250 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4252 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4253 struct bfd_link_info *info,
4254 enum ppc_elf_plt_type plt_style,
4257 struct ppc_elf_link_hash_table *htab;
4260 htab = ppc_elf_hash_table (info);
4262 htab->emit_stub_syms = emit_stub_syms;
4264 if (htab->plt_type == PLT_UNSET)
4266 if (plt_style == PLT_OLD)
4267 htab->plt_type = PLT_OLD;
4271 enum ppc_elf_plt_type plt_type = plt_style;
4273 /* Look through the reloc flags left by ppc_elf_check_relocs.
4274 Use the old style bss plt if a file makes plt calls
4275 without using the new relocs, and if ld isn't given
4276 --secure-plt and we never see REL16 relocs. */
4277 if (plt_type == PLT_UNSET)
4279 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4280 if (is_ppc_elf (ibfd))
4282 if (ppc_elf_tdata (ibfd)->has_rel16)
4284 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4287 htab->old_bfd = ibfd;
4291 htab->plt_type = plt_type;
4294 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4295 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
4297 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4299 if (htab->plt_type == PLT_NEW)
4301 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4302 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4304 /* The new PLT is a loaded section. */
4305 if (htab->plt != NULL
4306 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4309 /* The new GOT is not executable. */
4310 if (htab->got != NULL
4311 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4316 /* Stop an unused .glink section from affecting .text alignment. */
4317 if (htab->glink != NULL
4318 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4321 return htab->plt_type == PLT_NEW;
4324 /* Return the section that should be marked against GC for a given
4328 ppc_elf_gc_mark_hook (asection *sec,
4329 struct bfd_link_info *info,
4330 Elf_Internal_Rela *rel,
4331 struct elf_link_hash_entry *h,
4332 Elf_Internal_Sym *sym)
4335 switch (ELF32_R_TYPE (rel->r_info))
4337 case R_PPC_GNU_VTINHERIT:
4338 case R_PPC_GNU_VTENTRY:
4342 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4345 /* Update the got, plt and dynamic reloc reference counts for the
4346 section being removed. */
4349 ppc_elf_gc_sweep_hook (bfd *abfd,
4350 struct bfd_link_info *info,
4352 const Elf_Internal_Rela *relocs)
4354 struct ppc_elf_link_hash_table *htab;
4355 Elf_Internal_Shdr *symtab_hdr;
4356 struct elf_link_hash_entry **sym_hashes;
4357 bfd_signed_vma *local_got_refcounts;
4358 const Elf_Internal_Rela *rel, *relend;
4361 if (info->relocatable)
4364 if ((sec->flags & SEC_ALLOC) == 0)
4367 elf_section_data (sec)->local_dynrel = NULL;
4369 htab = ppc_elf_hash_table (info);
4370 symtab_hdr = &elf_symtab_hdr (abfd);
4371 sym_hashes = elf_sym_hashes (abfd);
4372 local_got_refcounts = elf_local_got_refcounts (abfd);
4373 got2 = bfd_get_section_by_name (abfd, ".got2");
4375 relend = relocs + sec->reloc_count;
4376 for (rel = relocs; rel < relend; rel++)
4378 unsigned long r_symndx;
4379 enum elf_ppc_reloc_type r_type;
4380 struct elf_link_hash_entry *h = NULL;
4382 r_symndx = ELF32_R_SYM (rel->r_info);
4383 if (r_symndx >= symtab_hdr->sh_info)
4385 struct ppc_elf_dyn_relocs **pp, *p;
4386 struct ppc_elf_link_hash_entry *eh;
4388 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4389 while (h->root.type == bfd_link_hash_indirect
4390 || h->root.type == bfd_link_hash_warning)
4391 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4392 eh = (struct ppc_elf_link_hash_entry *) h;
4394 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4397 /* Everything must go for SEC. */
4403 r_type = ELF32_R_TYPE (rel->r_info);
4404 if (!htab->is_vxworks
4406 && local_got_refcounts != NULL
4408 || is_branch_reloc (r_type)))
4410 struct plt_entry **local_plt = (struct plt_entry **)
4411 (local_got_refcounts + symtab_hdr->sh_info);
4412 char *local_got_tls_masks = (char *)
4413 (local_plt + symtab_hdr->sh_info);
4414 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4416 struct plt_entry **ifunc = local_plt + r_symndx;
4418 struct plt_entry *ent;
4420 if (r_type == R_PPC_PLTREL24 && info->shared)
4421 addend = rel->r_addend;
4422 ent = find_plt_ent (ifunc, got2, addend);
4423 if (ent->plt.refcount > 0)
4424 ent->plt.refcount -= 1;
4431 case R_PPC_GOT_TLSLD16:
4432 case R_PPC_GOT_TLSLD16_LO:
4433 case R_PPC_GOT_TLSLD16_HI:
4434 case R_PPC_GOT_TLSLD16_HA:
4435 case R_PPC_GOT_TLSGD16:
4436 case R_PPC_GOT_TLSGD16_LO:
4437 case R_PPC_GOT_TLSGD16_HI:
4438 case R_PPC_GOT_TLSGD16_HA:
4439 case R_PPC_GOT_TPREL16:
4440 case R_PPC_GOT_TPREL16_LO:
4441 case R_PPC_GOT_TPREL16_HI:
4442 case R_PPC_GOT_TPREL16_HA:
4443 case R_PPC_GOT_DTPREL16:
4444 case R_PPC_GOT_DTPREL16_LO:
4445 case R_PPC_GOT_DTPREL16_HI:
4446 case R_PPC_GOT_DTPREL16_HA:
4448 case R_PPC_GOT16_LO:
4449 case R_PPC_GOT16_HI:
4450 case R_PPC_GOT16_HA:
4453 if (h->got.refcount > 0)
4457 struct plt_entry *ent;
4459 ent = find_plt_ent (&h->plt.plist, NULL, 0);
4460 if (ent != NULL && ent->plt.refcount > 0)
4461 ent->plt.refcount -= 1;
4464 else if (local_got_refcounts != NULL)
4466 if (local_got_refcounts[r_symndx] > 0)
4467 local_got_refcounts[r_symndx]--;
4473 case R_PPC_REL14_BRTAKEN:
4474 case R_PPC_REL14_BRNTAKEN:
4476 if (h == NULL || h == htab->elf.hgot)
4483 case R_PPC_ADDR16_LO:
4484 case R_PPC_ADDR16_HI:
4485 case R_PPC_ADDR16_HA:
4487 case R_PPC_ADDR14_BRTAKEN:
4488 case R_PPC_ADDR14_BRNTAKEN:
4495 case R_PPC_PLTREL24:
4496 case R_PPC_PLTREL32:
4497 case R_PPC_PLT16_LO:
4498 case R_PPC_PLT16_HI:
4499 case R_PPC_PLT16_HA:
4503 struct plt_entry *ent;
4505 if (r_type == R_PPC_PLTREL24 && info->shared)
4506 addend = rel->r_addend;
4507 ent = find_plt_ent (&h->plt.plist, got2, addend);
4508 if (ent != NULL && ent->plt.refcount > 0)
4509 ent->plt.refcount -= 1;
4520 /* Set plt output section type, htab->tls_get_addr, and call the
4521 generic ELF tls_setup function. */
4524 ppc_elf_tls_setup (bfd *obfd,
4525 struct bfd_link_info *info,
4526 int no_tls_get_addr_opt)
4528 struct ppc_elf_link_hash_table *htab;
4530 htab = ppc_elf_hash_table (info);
4531 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4532 FALSE, FALSE, TRUE);
4533 if (!no_tls_get_addr_opt)
4535 struct elf_link_hash_entry *opt, *tga;
4536 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
4537 FALSE, FALSE, TRUE);
4539 && (opt->root.type == bfd_link_hash_defined
4540 || opt->root.type == bfd_link_hash_defweak))
4542 /* If glibc supports an optimized __tls_get_addr call stub,
4543 signalled by the presence of __tls_get_addr_opt, and we'll
4544 be calling __tls_get_addr via a plt call stub, then
4545 make __tls_get_addr point to __tls_get_addr_opt. */
4546 tga = htab->tls_get_addr;
4547 if (htab->elf.dynamic_sections_created
4549 && (tga->type == STT_FUNC
4551 && !(SYMBOL_CALLS_LOCAL (info, tga)
4552 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
4553 && tga->root.type == bfd_link_hash_undefweak)))
4555 struct plt_entry *ent;
4556 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
4557 if (ent->plt.refcount > 0)
4561 tga->root.type = bfd_link_hash_indirect;
4562 tga->root.u.i.link = &opt->root;
4563 ppc_elf_copy_indirect_symbol (info, opt, tga);
4564 if (opt->dynindx != -1)
4566 /* Use __tls_get_addr_opt in dynamic relocations. */
4568 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4570 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
4573 htab->tls_get_addr = opt;
4578 no_tls_get_addr_opt = TRUE;
4580 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
4581 if (htab->plt_type == PLT_NEW
4582 && htab->plt != NULL
4583 && htab->plt->output_section != NULL)
4585 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4586 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4589 return _bfd_elf_tls_setup (obfd, info);
4592 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4596 branch_reloc_hash_match (const bfd *ibfd,
4597 const Elf_Internal_Rela *rel,
4598 const struct elf_link_hash_entry *hash)
4600 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4601 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4602 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4604 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
4606 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4607 struct elf_link_hash_entry *h;
4609 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4610 while (h->root.type == bfd_link_hash_indirect
4611 || h->root.type == bfd_link_hash_warning)
4612 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4619 /* Run through all the TLS relocs looking for optimization
4623 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4624 struct bfd_link_info *info)
4628 struct ppc_elf_link_hash_table *htab;
4631 if (info->relocatable || !info->executable)
4634 htab = ppc_elf_hash_table (info);
4638 /* Make two passes through the relocs. First time check that tls
4639 relocs involved in setting up a tls_get_addr call are indeed
4640 followed by such a call. If they are not, don't do any tls
4641 optimization. On the second pass twiddle tls_mask flags to
4642 notify relocate_section that optimization can be done, and
4643 adjust got and plt refcounts. */
4644 for (pass = 0; pass < 2; ++pass)
4645 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4647 Elf_Internal_Sym *locsyms = NULL;
4648 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4649 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
4651 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4652 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4654 Elf_Internal_Rela *relstart, *rel, *relend;
4655 int expecting_tls_get_addr = 0;
4657 /* Read the relocations. */
4658 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4660 if (relstart == NULL)
4663 relend = relstart + sec->reloc_count;
4664 for (rel = relstart; rel < relend; rel++)
4666 enum elf_ppc_reloc_type r_type;
4667 unsigned long r_symndx;
4668 struct elf_link_hash_entry *h = NULL;
4670 char tls_set, tls_clear;
4671 bfd_boolean is_local;
4672 bfd_signed_vma *got_count;
4674 r_symndx = ELF32_R_SYM (rel->r_info);
4675 if (r_symndx >= symtab_hdr->sh_info)
4677 struct elf_link_hash_entry **sym_hashes;
4679 sym_hashes = elf_sym_hashes (ibfd);
4680 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4681 while (h->root.type == bfd_link_hash_indirect
4682 || h->root.type == bfd_link_hash_warning)
4683 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4691 r_type = ELF32_R_TYPE (rel->r_info);
4692 /* If this section has old-style __tls_get_addr calls
4693 without marker relocs, then check that each
4694 __tls_get_addr call reloc is preceded by a reloc
4695 that conceivably belongs to the __tls_get_addr arg
4696 setup insn. If we don't find matching arg setup
4697 relocs, don't do any tls optimization. */
4699 && sec->has_tls_get_addr_call
4701 && h == htab->tls_get_addr
4702 && !expecting_tls_get_addr
4703 && is_branch_reloc (r_type))
4705 info->callbacks->minfo ("%C __tls_get_addr lost arg, "
4706 "TLS optimization disabled\n",
4707 ibfd, sec, rel->r_offset);
4708 if (elf_section_data (sec)->relocs != relstart)
4713 expecting_tls_get_addr = 0;
4716 case R_PPC_GOT_TLSLD16:
4717 case R_PPC_GOT_TLSLD16_LO:
4718 expecting_tls_get_addr = 1;
4721 case R_PPC_GOT_TLSLD16_HI:
4722 case R_PPC_GOT_TLSLD16_HA:
4723 /* These relocs should never be against a symbol
4724 defined in a shared lib. Leave them alone if
4725 that turns out to be the case. */
4734 case R_PPC_GOT_TLSGD16:
4735 case R_PPC_GOT_TLSGD16_LO:
4736 expecting_tls_get_addr = 1;
4739 case R_PPC_GOT_TLSGD16_HI:
4740 case R_PPC_GOT_TLSGD16_HA:
4746 tls_set = TLS_TLS | TLS_TPRELGD;
4750 case R_PPC_GOT_TPREL16:
4751 case R_PPC_GOT_TPREL16_LO:
4752 case R_PPC_GOT_TPREL16_HI:
4753 case R_PPC_GOT_TPREL16_HA:
4758 tls_clear = TLS_TPREL;
4766 expecting_tls_get_addr = 2;
4777 if (!expecting_tls_get_addr
4778 || (expecting_tls_get_addr == 1
4779 && !sec->has_tls_get_addr_call))
4782 if (rel + 1 < relend
4783 && branch_reloc_hash_match (ibfd, rel + 1,
4784 htab->tls_get_addr))
4787 /* Uh oh, we didn't find the expected call. We
4788 could just mark this symbol to exclude it
4789 from tls optimization but it's safer to skip
4790 the entire optimization. */
4791 info->callbacks->minfo (_("%C arg lost __tls_get_addr, "
4792 "TLS optimization disabled\n"),
4793 ibfd, sec, rel->r_offset);
4794 if (elf_section_data (sec)->relocs != relstart)
4799 if (expecting_tls_get_addr)
4801 struct plt_entry *ent;
4805 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
4806 addend = rel[1].r_addend;
4807 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4809 if (ent != NULL && ent->plt.refcount > 0)
4810 ent->plt.refcount -= 1;
4812 if (expecting_tls_get_addr == 2)
4818 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4819 got_count = &h->got.refcount;
4823 bfd_signed_vma *lgot_refs;
4824 struct plt_entry **local_plt;
4827 if (locsyms == NULL)
4829 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4830 if (locsyms == NULL)
4831 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4832 symtab_hdr->sh_info,
4833 0, NULL, NULL, NULL);
4834 if (locsyms == NULL)
4836 if (elf_section_data (sec)->relocs != relstart)
4841 lgot_refs = elf_local_got_refcounts (ibfd);
4842 if (lgot_refs == NULL)
4844 local_plt = (struct plt_entry **)
4845 (lgot_refs + symtab_hdr->sh_info);
4846 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
4847 tls_mask = &lgot_masks[r_symndx];
4848 got_count = &lgot_refs[r_symndx];
4853 /* We managed to get rid of a got entry. */
4858 *tls_mask |= tls_set;
4859 *tls_mask &= ~tls_clear;
4862 if (elf_section_data (sec)->relocs != relstart)
4867 && (symtab_hdr->contents != (unsigned char *) locsyms))
4869 if (!info->keep_memory)
4872 symtab_hdr->contents = (unsigned char *) locsyms;
4878 /* Return true if we have dynamic relocs that apply to read-only sections. */
4881 readonly_dynrelocs (struct elf_link_hash_entry *h)
4883 struct ppc_elf_dyn_relocs *p;
4885 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4887 asection *s = p->sec->output_section;
4890 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4891 == (SEC_READONLY | SEC_ALLOC)))
4897 /* Adjust a symbol defined by a dynamic object and referenced by a
4898 regular object. The current definition is in some section of the
4899 dynamic object, but we're not including those sections. We have to
4900 change the definition to something the rest of the link can
4904 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4905 struct elf_link_hash_entry *h)
4907 struct ppc_elf_link_hash_table *htab;
4911 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4912 h->root.root.string);
4915 /* Make sure we know what is going on here. */
4916 htab = ppc_elf_hash_table (info);
4917 BFD_ASSERT (htab->elf.dynobj != NULL
4919 || h->type == STT_GNU_IFUNC
4920 || h->u.weakdef != NULL
4923 && !h->def_regular)));
4925 /* Deal with function syms. */
4926 if (h->type == STT_FUNC
4927 || h->type == STT_GNU_IFUNC
4930 /* Clear procedure linkage table information for any symbol that
4931 won't need a .plt entry. */
4932 struct plt_entry *ent;
4933 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4934 if (ent->plt.refcount > 0)
4937 || (h->type != STT_GNU_IFUNC
4938 && (SYMBOL_CALLS_LOCAL (info, h)
4939 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4940 && h->root.type == bfd_link_hash_undefweak))))
4942 /* A PLT entry is not required/allowed when:
4944 1. We are not using ld.so; because then the PLT entry
4945 can't be set up, so we can't use one. In this case,
4946 ppc_elf_adjust_dynamic_symbol won't even be called.
4948 2. GC has rendered the entry unused.
4950 3. We know for certain that a call to this symbol
4951 will go to this object, or will remain undefined. */
4952 h->plt.plist = NULL;
4957 /* After adjust_dynamic_symbol, non_got_ref set in the
4958 non-shared case means that we have allocated space in
4959 .dynbss for the symbol and thus dyn_relocs for this
4960 symbol should be discarded.
4961 If we get here we know we are making a PLT entry for this
4962 symbol, and in an executable we'd normally resolve
4963 relocations against this symbol to the PLT entry. Allow
4964 dynamic relocs if the reference is weak, and the dynamic
4965 relocs will not cause text relocation. */
4966 if (!h->ref_regular_nonweak
4968 && h->type != STT_GNU_IFUNC
4969 && !htab->is_vxworks
4970 && !ppc_elf_hash_entry (h)->has_sda_refs
4971 && !readonly_dynrelocs (h))
4977 h->plt.plist = NULL;
4979 /* If this is a weak symbol, and there is a real definition, the
4980 processor independent code will have arranged for us to see the
4981 real definition first, and we can just use the same value. */
4982 if (h->u.weakdef != NULL)
4984 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4985 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4986 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4987 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4988 if (ELIMINATE_COPY_RELOCS)
4989 h->non_got_ref = h->u.weakdef->non_got_ref;
4993 /* This is a reference to a symbol defined by a dynamic object which
4994 is not a function. */
4996 /* If we are creating a shared library, we must presume that the
4997 only references to the symbol are via the global offset table.
4998 For such cases we need not do anything here; the relocations will
4999 be handled correctly by relocate_section. */
5003 /* If there are no references to this symbol that do not use the
5004 GOT, we don't need to generate a copy reloc. */
5005 if (!h->non_got_ref)
5008 /* If we didn't find any dynamic relocs in read-only sections, then
5009 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5010 We can't do this if there are any small data relocations. This
5011 doesn't work on VxWorks, where we can not have dynamic
5012 relocations (other than copy and jump slot relocations) in an
5014 if (ELIMINATE_COPY_RELOCS
5015 && !ppc_elf_hash_entry (h)->has_sda_refs
5016 && !htab->is_vxworks
5018 && !readonly_dynrelocs (h))
5026 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5027 h->root.root.string);
5031 /* We must allocate the symbol in our .dynbss section, which will
5032 become part of the .bss section of the executable. There will be
5033 an entry for this symbol in the .dynsym section. The dynamic
5034 object will contain position independent code, so all references
5035 from the dynamic object to this symbol will go through the global
5036 offset table. The dynamic linker will use the .dynsym entry to
5037 determine the address it must put in the global offset table, so
5038 both the dynamic object and the regular object will refer to the
5039 same memory location for the variable.
5041 Of course, if the symbol is referenced using SDAREL relocs, we
5042 must instead allocate it in .sbss. */
5044 if (ppc_elf_hash_entry (h)->has_sda_refs)
5048 BFD_ASSERT (s != NULL);
5050 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5051 copy the initial value out of the dynamic object and into the
5052 runtime process image. We need to remember the offset into the
5053 .rela.bss section we are going to use. */
5054 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5058 if (ppc_elf_hash_entry (h)->has_sda_refs)
5059 srel = htab->relsbss;
5061 srel = htab->relbss;
5062 BFD_ASSERT (srel != NULL);
5063 srel->size += sizeof (Elf32_External_Rela);
5067 return _bfd_elf_adjust_dynamic_copy (h, s);
5070 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5071 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5072 specifying the addend on the plt relocation. For -fpic code, the sym
5073 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5074 xxxxxxxx.got2.plt_pic32.<callee>. */
5077 add_stub_sym (struct plt_entry *ent,
5078 struct elf_link_hash_entry *h,
5079 struct bfd_link_info *info)
5081 struct elf_link_hash_entry *sh;
5082 size_t len1, len2, len3;
5085 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5088 stub = ".plt_pic32.";
5090 stub = ".plt_call32.";
5092 len1 = strlen (h->root.root.string);
5093 len2 = strlen (stub);
5096 len3 = strlen (ent->sec->name);
5097 name = bfd_malloc (len1 + len2 + len3 + 9);
5100 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5102 memcpy (name + 8, ent->sec->name, len3);
5103 memcpy (name + 8 + len3, stub, len2);
5104 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5105 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5108 if (sh->root.type == bfd_link_hash_new)
5110 sh->root.type = bfd_link_hash_defined;
5111 sh->root.u.def.section = htab->glink;
5112 sh->root.u.def.value = ent->glink_offset;
5113 sh->ref_regular = 1;
5114 sh->def_regular = 1;
5115 sh->ref_regular_nonweak = 1;
5116 sh->forced_local = 1;
5122 /* Allocate NEED contiguous space in .got, and return the offset.
5123 Handles allocation of the got header when crossing 32k. */
5126 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5129 unsigned int max_before_header;
5131 if (htab->plt_type == PLT_VXWORKS)
5133 where = htab->got->size;
5134 htab->got->size += need;
5138 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5139 if (need <= htab->got_gap)
5141 where = max_before_header - htab->got_gap;
5142 htab->got_gap -= need;
5146 if (htab->got->size + need > max_before_header
5147 && htab->got->size <= max_before_header)
5149 htab->got_gap = max_before_header - htab->got->size;
5150 htab->got->size = max_before_header + htab->got_header_size;
5152 where = htab->got->size;
5153 htab->got->size += need;
5159 /* Allocate space in associated reloc sections for dynamic relocs. */
5162 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5164 struct bfd_link_info *info = inf;
5165 struct ppc_elf_link_hash_entry *eh;
5166 struct ppc_elf_link_hash_table *htab;
5167 struct ppc_elf_dyn_relocs *p;
5169 if (h->root.type == bfd_link_hash_indirect)
5172 if (h->root.type == bfd_link_hash_warning)
5173 /* When warning symbols are created, they **replace** the "real"
5174 entry in the hash table, thus we never get to see the real
5175 symbol in a hash traversal. So look at it now. */
5176 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5178 htab = ppc_elf_hash_table (info);
5179 if (htab->elf.dynamic_sections_created
5180 || h->type == STT_GNU_IFUNC)
5182 struct plt_entry *ent;
5183 bfd_boolean doneone = FALSE;
5184 bfd_vma plt_offset = 0, glink_offset = 0;
5187 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5188 if (ent->plt.refcount > 0)
5190 /* Make sure this symbol is output as a dynamic symbol. */
5191 if (h->dynindx == -1
5194 && htab->elf.dynamic_sections_created)
5196 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5200 dyn = htab->elf.dynamic_sections_created;
5202 || h->type == STT_GNU_IFUNC
5203 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5205 asection *s = htab->plt;
5206 if (!dyn || h->dynindx == -1)
5209 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5213 plt_offset = s->size;
5216 ent->plt.offset = plt_offset;
5219 if (!doneone || info->shared)
5221 glink_offset = s->size;
5222 s->size += GLINK_ENTRY_SIZE;
5223 if (h == htab->tls_get_addr
5224 && !htab->no_tls_get_addr_opt)
5225 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5232 h->root.u.def.section = s;
5233 h->root.u.def.value = glink_offset;
5235 ent->glink_offset = glink_offset;
5237 if (htab->emit_stub_syms
5238 && !add_stub_sym (ent, h, info))
5245 /* If this is the first .plt entry, make room
5246 for the special first entry. */
5248 s->size += htab->plt_initial_entry_size;
5250 /* The PowerPC PLT is actually composed of two
5251 parts, the first part is 2 words (for a load
5252 and a jump), and then there is a remaining
5253 word available at the end. */
5254 plt_offset = (htab->plt_initial_entry_size
5255 + (htab->plt_slot_size
5257 - htab->plt_initial_entry_size)
5258 / htab->plt_entry_size)));
5260 /* If this symbol is not defined in a regular
5261 file, and we are not generating a shared
5262 library, then set the symbol to this location
5263 in the .plt. This is to avoid text
5264 relocations, and is required to make
5265 function pointers compare as equal between
5266 the normal executable and the shared library. */
5271 h->root.u.def.section = s;
5272 h->root.u.def.value = plt_offset;
5275 /* Make room for this entry. */
5276 s->size += htab->plt_entry_size;
5277 /* After the 8192nd entry, room for two entries
5279 if (htab->plt_type == PLT_OLD
5280 && (s->size - htab->plt_initial_entry_size)
5281 / htab->plt_entry_size
5282 > PLT_NUM_SINGLE_ENTRIES)
5283 s->size += htab->plt_entry_size;
5285 ent->plt.offset = plt_offset;
5288 /* We also need to make an entry in the .rela.plt section. */
5291 if (!htab->elf.dynamic_sections_created
5292 || h->dynindx == -1)
5293 htab->reliplt->size += sizeof (Elf32_External_Rela);
5296 htab->relplt->size += sizeof (Elf32_External_Rela);
5298 if (htab->plt_type == PLT_VXWORKS)
5300 /* Allocate space for the unloaded relocations. */
5302 && htab->elf.dynamic_sections_created)
5305 == (bfd_vma) htab->plt_initial_entry_size)
5307 htab->srelplt2->size
5308 += (sizeof (Elf32_External_Rela)
5309 * VXWORKS_PLTRESOLVE_RELOCS);
5312 htab->srelplt2->size
5313 += (sizeof (Elf32_External_Rela)
5314 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5317 /* Every PLT entry has an associated GOT entry in
5319 htab->sgotplt->size += 4;
5326 ent->plt.offset = (bfd_vma) -1;
5329 ent->plt.offset = (bfd_vma) -1;
5333 h->plt.plist = NULL;
5339 h->plt.plist = NULL;
5343 eh = (struct ppc_elf_link_hash_entry *) h;
5344 if (eh->elf.got.refcount > 0)
5349 /* Make sure this symbol is output as a dynamic symbol. */
5350 if (eh->elf.dynindx == -1
5351 && !eh->elf.forced_local
5352 && eh->elf.type != STT_GNU_IFUNC
5353 && htab->elf.dynamic_sections_created)
5355 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5360 if ((eh->tls_mask & TLS_TLS) != 0)
5362 if ((eh->tls_mask & TLS_LD) != 0)
5364 if (!eh->elf.def_dynamic)
5365 /* We'll just use htab->tlsld_got.offset. This should
5366 always be the case. It's a little odd if we have
5367 a local dynamic reloc against a non-local symbol. */
5368 htab->tlsld_got.refcount += 1;
5372 if ((eh->tls_mask & TLS_GD) != 0)
5374 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5376 if ((eh->tls_mask & TLS_DTPREL) != 0)
5382 eh->elf.got.offset = (bfd_vma) -1;
5385 eh->elf.got.offset = allocate_got (htab, need);
5386 dyn = htab->elf.dynamic_sections_created;
5388 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5389 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5390 || eh->elf.root.type != bfd_link_hash_undefweak))
5392 asection *rsec = htab->relgot;
5393 /* All the entries we allocated need relocs.
5394 Except LD only needs one. */
5395 if ((eh->tls_mask & TLS_LD) != 0
5396 && eh->elf.def_dynamic)
5398 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5403 eh->elf.got.offset = (bfd_vma) -1;
5405 if (eh->dyn_relocs == NULL
5406 || !htab->elf.dynamic_sections_created)
5409 /* In the shared -Bsymbolic case, discard space allocated for
5410 dynamic pc-relative relocs against symbols which turn out to be
5411 defined in regular objects. For the normal shared case, discard
5412 space for relocs that have become local due to symbol visibility
5417 /* Relocs that use pc_count are those that appear on a call insn,
5418 or certain REL relocs (see must_be_dyn_reloc) that can be
5419 generated via assembly. We want calls to protected symbols to
5420 resolve directly to the function rather than going via the plt.
5421 If people want function pointer comparisons to work as expected
5422 then they should avoid writing weird assembly. */
5423 if (SYMBOL_CALLS_LOCAL (info, h))
5425 struct ppc_elf_dyn_relocs **pp;
5427 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5429 p->count -= p->pc_count;
5438 if (htab->is_vxworks)
5440 struct ppc_elf_dyn_relocs **pp;
5442 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5444 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5451 /* Discard relocs on undefined symbols that must be local. */
5452 if (eh->dyn_relocs != NULL
5453 && h->root.type == bfd_link_hash_undefined
5454 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5455 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5456 eh->dyn_relocs = NULL;
5458 /* Also discard relocs on undefined weak syms with non-default
5460 if (eh->dyn_relocs != NULL
5461 && h->root.type == bfd_link_hash_undefweak)
5463 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5464 eh->dyn_relocs = NULL;
5466 /* Make sure undefined weak symbols are output as a dynamic
5468 else if (h->dynindx == -1
5472 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5477 else if (ELIMINATE_COPY_RELOCS)
5479 /* For the non-shared case, discard space for relocs against
5480 symbols which turn out to need copy relocs or are not
5486 /* Make sure this symbol is output as a dynamic symbol.
5487 Undefined weak syms won't yet be marked as dynamic. */
5488 if (h->dynindx == -1
5489 && !h->forced_local)
5491 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5495 /* If that succeeded, we know we'll be keeping all the
5497 if (h->dynindx != -1)
5501 eh->dyn_relocs = NULL;
5506 /* Finally, allocate space. */
5507 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5509 asection *sreloc = elf_section_data (p->sec)->sreloc;
5510 if (!htab->elf.dynamic_sections_created)
5511 sreloc = htab->reliplt;
5512 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5518 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5519 read-only sections. */
5522 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5524 if (h->root.type == bfd_link_hash_indirect)
5527 if (h->root.type == bfd_link_hash_warning)
5528 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5530 if (readonly_dynrelocs (h))
5532 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5534 /* Not an error, just cut short the traversal. */
5540 /* Set the sizes of the dynamic sections. */
5543 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5544 struct bfd_link_info *info)
5546 struct ppc_elf_link_hash_table *htab;
5552 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5555 htab = ppc_elf_hash_table (info);
5556 BFD_ASSERT (htab->elf.dynobj != NULL);
5558 if (elf_hash_table (info)->dynamic_sections_created)
5560 /* Set the contents of the .interp section to the interpreter. */
5561 if (info->executable)
5563 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5564 BFD_ASSERT (s != NULL);
5565 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5566 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5570 if (htab->plt_type == PLT_OLD)
5571 htab->got_header_size = 16;
5572 else if (htab->plt_type == PLT_NEW)
5573 htab->got_header_size = 12;
5575 /* Set up .got offsets for local syms, and space for local dynamic
5577 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5579 bfd_signed_vma *local_got;
5580 bfd_signed_vma *end_local_got;
5581 struct plt_entry **local_plt;
5582 struct plt_entry **end_local_plt;
5584 bfd_size_type locsymcount;
5585 Elf_Internal_Shdr *symtab_hdr;
5587 if (!is_ppc_elf (ibfd))
5590 for (s = ibfd->sections; s != NULL; s = s->next)
5592 struct ppc_elf_dyn_relocs *p;
5594 for (p = ((struct ppc_elf_dyn_relocs *)
5595 elf_section_data (s)->local_dynrel);
5599 if (!bfd_is_abs_section (p->sec)
5600 && bfd_is_abs_section (p->sec->output_section))
5602 /* Input section has been discarded, either because
5603 it is a copy of a linkonce section or due to
5604 linker script /DISCARD/, so we'll be discarding
5607 else if (htab->is_vxworks
5608 && strcmp (p->sec->output_section->name,
5611 /* Relocations in vxworks .tls_vars sections are
5612 handled specially by the loader. */
5614 else if (p->count != 0)
5616 asection *sreloc = elf_section_data (p->sec)->sreloc;
5617 if (!htab->elf.dynamic_sections_created)
5618 sreloc = htab->reliplt;
5619 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5620 if ((p->sec->output_section->flags
5621 & (SEC_READONLY | SEC_ALLOC))
5622 == (SEC_READONLY | SEC_ALLOC))
5623 info->flags |= DF_TEXTREL;
5628 local_got = elf_local_got_refcounts (ibfd);
5632 symtab_hdr = &elf_symtab_hdr (ibfd);
5633 locsymcount = symtab_hdr->sh_info;
5634 end_local_got = local_got + locsymcount;
5635 local_plt = (struct plt_entry **) end_local_got;
5636 end_local_plt = local_plt + locsymcount;
5637 lgot_masks = (char *) end_local_plt;
5639 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5642 unsigned int need = 0;
5643 if ((*lgot_masks & TLS_TLS) != 0)
5645 if ((*lgot_masks & TLS_GD) != 0)
5647 if ((*lgot_masks & TLS_LD) != 0)
5648 htab->tlsld_got.refcount += 1;
5649 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5651 if ((*lgot_masks & TLS_DTPREL) != 0)
5657 *local_got = (bfd_vma) -1;
5660 *local_got = allocate_got (htab, need);
5662 htab->relgot->size += (need
5663 * (sizeof (Elf32_External_Rela) / 4));
5667 *local_got = (bfd_vma) -1;
5669 if (htab->is_vxworks)
5672 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5673 for (; local_plt < end_local_plt; ++local_plt)
5675 struct plt_entry *ent;
5676 bfd_boolean doneone = FALSE;
5677 bfd_vma plt_offset = 0, glink_offset = 0;
5679 for (ent = *local_plt; ent != NULL; ent = ent->next)
5680 if (ent->plt.refcount > 0)
5686 plt_offset = s->size;
5689 ent->plt.offset = plt_offset;
5692 if (!doneone || info->shared)
5694 glink_offset = s->size;
5695 s->size += GLINK_ENTRY_SIZE;
5697 ent->glink_offset = glink_offset;
5701 htab->reliplt->size += sizeof (Elf32_External_Rela);
5706 ent->plt.offset = (bfd_vma) -1;
5710 /* Allocate space for global sym dynamic relocs. */
5711 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5713 if (htab->tlsld_got.refcount > 0)
5715 htab->tlsld_got.offset = allocate_got (htab, 8);
5717 htab->relgot->size += sizeof (Elf32_External_Rela);
5720 htab->tlsld_got.offset = (bfd_vma) -1;
5722 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5724 unsigned int g_o_t = 32768;
5726 /* If we haven't allocated the header, do so now. When we get here,
5727 for old plt/got the got size will be 0 to 32764 (not allocated),
5728 or 32780 to 65536 (header allocated). For new plt/got, the
5729 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5730 if (htab->got->size <= 32768)
5732 g_o_t = htab->got->size;
5733 if (htab->plt_type == PLT_OLD)
5735 htab->got->size += htab->got_header_size;
5738 htab->elf.hgot->root.u.def.value = g_o_t;
5742 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
5744 && !(sda->root.type == bfd_link_hash_defined
5745 || sda->root.type == bfd_link_hash_defweak))
5747 sda->root.type = bfd_link_hash_defined;
5748 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
5749 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
5753 if (htab->glink != NULL
5754 && htab->glink->size != 0
5755 && htab->elf.dynamic_sections_created)
5757 htab->glink_pltresolve = htab->glink->size;
5758 /* Space for the branch table. */
5759 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5760 /* Pad out to align the start of PLTresolve. */
5761 htab->glink->size += -htab->glink->size & 15;
5762 htab->glink->size += GLINK_PLTRESOLVE;
5764 if (htab->emit_stub_syms)
5766 struct elf_link_hash_entry *sh;
5767 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5768 TRUE, FALSE, FALSE);
5771 if (sh->root.type == bfd_link_hash_new)
5773 sh->root.type = bfd_link_hash_defined;
5774 sh->root.u.def.section = htab->glink;
5775 sh->root.u.def.value = htab->glink_pltresolve;
5776 sh->ref_regular = 1;
5777 sh->def_regular = 1;
5778 sh->ref_regular_nonweak = 1;
5779 sh->forced_local = 1;
5782 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5783 TRUE, FALSE, FALSE);
5786 if (sh->root.type == bfd_link_hash_new)
5788 sh->root.type = bfd_link_hash_defined;
5789 sh->root.u.def.section = htab->glink;
5790 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5791 sh->ref_regular = 1;
5792 sh->def_regular = 1;
5793 sh->ref_regular_nonweak = 1;
5794 sh->forced_local = 1;
5800 /* We've now determined the sizes of the various dynamic sections.
5801 Allocate memory for them. */
5803 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5805 bfd_boolean strip_section = TRUE;
5807 if ((s->flags & SEC_LINKER_CREATED) == 0)
5813 /* We'd like to strip these sections if they aren't needed, but if
5814 we've exported dynamic symbols from them we must leave them.
5815 It's too late to tell BFD to get rid of the symbols. */
5816 if (htab->elf.hplt != NULL)
5817 strip_section = FALSE;
5818 /* Strip this section if we don't need it; see the
5821 else if (s == htab->iplt
5823 || s == htab->sgotplt
5825 || s == htab->dynbss
5826 || s == htab->dynsbss
5827 || s == htab->sdata[0].section
5828 || s == htab->sdata[1].section)
5830 /* Strip these too. */
5832 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5836 /* Remember whether there are any relocation sections. */
5839 /* We use the reloc_count field as a counter if we need
5840 to copy relocs into the output file. */
5846 /* It's not one of our sections, so don't allocate space. */
5850 if (s->size == 0 && strip_section)
5852 /* If we don't need this section, strip it from the
5853 output file. This is mostly to handle .rela.bss and
5854 .rela.plt. We must create both sections in
5855 create_dynamic_sections, because they must be created
5856 before the linker maps input sections to output
5857 sections. The linker does that before
5858 adjust_dynamic_symbol is called, and it is that
5859 function which decides whether anything needs to go
5860 into these sections. */
5861 s->flags |= SEC_EXCLUDE;
5865 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5868 /* Allocate memory for the section contents. */
5869 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5870 if (s->contents == NULL)
5874 if (htab->elf.dynamic_sections_created)
5876 /* Add some entries to the .dynamic section. We fill in the
5877 values later, in ppc_elf_finish_dynamic_sections, but we
5878 must add the entries now so that we get the correct size for
5879 the .dynamic section. The DT_DEBUG entry is filled in by the
5880 dynamic linker and used by the debugger. */
5881 #define add_dynamic_entry(TAG, VAL) \
5882 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5884 if (info->executable)
5886 if (!add_dynamic_entry (DT_DEBUG, 0))
5890 if (htab->plt != NULL && htab->plt->size != 0)
5892 if (!add_dynamic_entry (DT_PLTGOT, 0)
5893 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5894 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5895 || !add_dynamic_entry (DT_JMPREL, 0))
5899 if (htab->glink != NULL && htab->glink->size != 0)
5901 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5903 if (!htab->no_tls_get_addr_opt
5904 && htab->tls_get_addr != NULL
5905 && htab->tls_get_addr->plt.plist != NULL
5906 && !add_dynamic_entry (DT_PPC_TLSOPT, 0))
5912 if (!add_dynamic_entry (DT_RELA, 0)
5913 || !add_dynamic_entry (DT_RELASZ, 0)
5914 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5918 /* If any dynamic relocs apply to a read-only section, then we
5919 need a DT_TEXTREL entry. */
5920 if ((info->flags & DF_TEXTREL) == 0)
5921 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5924 if ((info->flags & DF_TEXTREL) != 0)
5926 if (!add_dynamic_entry (DT_TEXTREL, 0))
5929 if (htab->is_vxworks
5930 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5933 #undef add_dynamic_entry
5938 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5941 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5943 if (h->plt.plist != NULL
5945 && (!h->pointer_equality_needed
5946 || !h->ref_regular_nonweak))
5949 return _bfd_elf_hash_symbol (h);
5952 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5954 /* Relaxation trampolines. r12 is available for clobbering (r11, is
5955 used for some functions that are allowed to break the ABI). */
5956 static const int shared_stub_entry[] =
5958 0x7c0802a6, /* mflr 0 */
5959 0x429f0005, /* bcl 20, 31, .Lxxx */
5960 0x7d8802a6, /* mflr 12 */
5961 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
5962 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
5963 0x7c0803a6, /* mtlr 0 */
5964 0x7d8903a6, /* mtctr 12 */
5965 0x4e800420, /* bctr */
5968 static const int stub_entry[] =
5970 0x3d800000, /* lis 12,xxx@ha */
5971 0x398c0000, /* addi 12,12,xxx@l */
5972 0x7d8903a6, /* mtctr 12 */
5973 0x4e800420, /* bctr */
5977 ppc_elf_relax_section (bfd *abfd,
5979 struct bfd_link_info *link_info,
5984 struct one_fixup *next;
5986 /* Final link, can use the symbol offset. For a
5987 relocatable link we use the symbol's index. */
5992 Elf_Internal_Shdr *symtab_hdr;
5993 bfd_byte *contents = NULL;
5994 Elf_Internal_Sym *isymbuf = NULL;
5995 Elf_Internal_Rela *internal_relocs = NULL;
5996 Elf_Internal_Rela *irel, *irelend;
5997 struct one_fixup *fixups = NULL;
5998 unsigned changes = 0;
5999 struct ppc_elf_link_hash_table *htab;
6000 bfd_size_type trampoff;
6002 bfd_boolean maybe_pasted;
6006 /* Nothing to do if there are no relocations, and no need to do
6007 anything with non-alloc or non-code sections. */
6008 if ((isec->flags & SEC_ALLOC) == 0
6009 || (isec->flags & SEC_CODE) == 0
6010 || (isec->flags & SEC_RELOC) == 0
6011 || isec->reloc_count == 0)
6014 /* We cannot represent the required PIC relocs in the output, so don't
6015 do anything. The linker doesn't support mixing -shared and -r
6017 if (link_info->relocatable && link_info->shared)
6020 trampoff = (isec->size + 3) & (bfd_vma) -4;
6021 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6022 || strcmp (isec->output_section->name, ".fini") == 0);
6023 /* Space for a branch around any trampolines. */
6027 symtab_hdr = &elf_symtab_hdr (abfd);
6029 /* Get a copy of the native relocations. */
6030 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6031 link_info->keep_memory);
6032 if (internal_relocs == NULL)
6035 htab = ppc_elf_hash_table (link_info);
6036 got2 = bfd_get_section_by_name (abfd, ".got2");
6038 irelend = internal_relocs + isec->reloc_count;
6039 for (irel = internal_relocs; irel < irelend; irel++)
6041 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6044 struct one_fixup *f;
6045 size_t insn_offset = 0;
6046 bfd_vma max_branch_offset, val;
6049 struct elf_link_hash_entry *h;
6050 struct plt_entry **plist;
6051 unsigned char sym_type;
6056 case R_PPC_LOCAL24PC:
6057 case R_PPC_PLTREL24:
6058 max_branch_offset = 1 << 25;
6062 case R_PPC_REL14_BRTAKEN:
6063 case R_PPC_REL14_BRNTAKEN:
6064 max_branch_offset = 1 << 15;
6071 /* Get the value of the symbol referred to by the reloc. */
6073 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6075 /* A local symbol. */
6076 Elf_Internal_Sym *isym;
6078 /* Read this BFD's local symbols. */
6079 if (isymbuf == NULL)
6081 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6082 if (isymbuf == NULL)
6083 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6084 symtab_hdr->sh_info, 0,
6089 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6090 if (isym->st_shndx == SHN_UNDEF)
6091 tsec = bfd_und_section_ptr;
6092 else if (isym->st_shndx == SHN_ABS)
6093 tsec = bfd_abs_section_ptr;
6094 else if (isym->st_shndx == SHN_COMMON)
6095 tsec = bfd_com_section_ptr;
6097 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6099 toff = isym->st_value;
6100 sym_type = ELF_ST_TYPE (isym->st_info);
6104 /* Global symbol handling. */
6107 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6108 h = elf_sym_hashes (abfd)[indx];
6110 while (h->root.type == bfd_link_hash_indirect
6111 || h->root.type == bfd_link_hash_warning)
6112 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6114 if (h->root.type == bfd_link_hash_defined
6115 || h->root.type == bfd_link_hash_defweak)
6117 tsec = h->root.u.def.section;
6118 toff = h->root.u.def.value;
6120 else if (h->root.type == bfd_link_hash_undefined
6121 || h->root.type == bfd_link_hash_undefweak)
6123 tsec = bfd_und_section_ptr;
6124 toff = link_info->relocatable ? indx : 0;
6132 /* The condition here under which we call find_plt_ent must
6133 match that in relocate_section. If we call find_plt_ent here
6134 but not in relocate_section, or vice versa, then the branch
6135 destination used here may be incorrect. */
6139 /* We know is_branch_reloc (r_type) is true. */
6140 if (h->type == STT_GNU_IFUNC
6141 || r_type == R_PPC_PLTREL24)
6142 plist = &h->plt.plist;
6144 else if (sym_type == STT_GNU_IFUNC
6145 && elf_local_got_offsets (abfd) != NULL)
6147 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6148 struct plt_entry **local_plt = (struct plt_entry **)
6149 (local_got_offsets + symtab_hdr->sh_info);
6150 plist = local_plt + ELF32_R_SYM (irel->r_info);
6155 struct plt_entry *ent;
6157 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6158 addend = irel->r_addend;
6159 ent = find_plt_ent (plist, got2, addend);
6162 if (htab->plt_type == PLT_NEW
6164 || !htab->elf.dynamic_sections_created
6165 || h->dynindx == -1)
6168 toff = ent->glink_offset;
6173 toff = ent->plt.offset;
6178 /* If the branch and target are in the same section, you have
6179 no hope of adding stubs. We'll error out later should the
6184 /* There probably isn't any reason to handle symbols in
6185 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6186 attribute for a code section, and we are only looking at
6187 branches. However, implement it correctly here as a
6188 reference for other target relax_section functions. */
6189 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6191 /* At this stage in linking, no SEC_MERGE symbol has been
6192 adjusted, so all references to such symbols need to be
6193 passed through _bfd_merged_section_offset. (Later, in
6194 relocate_section, all SEC_MERGE symbols *except* for
6195 section symbols have been adjusted.)
6197 gas may reduce relocations against symbols in SEC_MERGE
6198 sections to a relocation against the section symbol when
6199 the original addend was zero. When the reloc is against
6200 a section symbol we should include the addend in the
6201 offset passed to _bfd_merged_section_offset, since the
6202 location of interest is the original symbol. On the
6203 other hand, an access to "sym+addend" where "sym" is not
6204 a section symbol should not include the addend; Such an
6205 access is presumed to be an offset from "sym"; The
6206 location of interest is just "sym". */
6207 if (sym_type == STT_SECTION)
6208 toff += irel->r_addend;
6210 toff = _bfd_merged_section_offset (abfd, &tsec,
6211 elf_section_data (tsec)->sec_info,
6214 if (sym_type != STT_SECTION)
6215 toff += irel->r_addend;
6217 /* PLTREL24 addends are special. */
6218 else if (r_type != R_PPC_PLTREL24)
6219 toff += irel->r_addend;
6221 /* Attempted -shared link of non-pic code loses. */
6222 if (tsec->output_section == NULL)
6225 roff = irel->r_offset;
6227 /* If the branch is in range, no need to do anything. */
6228 if (tsec != bfd_und_section_ptr
6229 && (!link_info->relocatable
6230 /* A relocatable link may have sections moved during
6231 final link, so do not presume they remain in range. */
6232 || tsec->output_section == isec->output_section))
6234 bfd_vma symaddr, reladdr;
6236 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6237 reladdr = isec->output_section->vma + isec->output_offset + roff;
6238 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6242 /* Look for an existing fixup to this address. */
6243 for (f = fixups; f ; f = f->next)
6244 if (f->tsec == tsec && f->toff == toff)
6250 unsigned long stub_rtype;
6252 val = trampoff - roff;
6253 if (val >= max_branch_offset)
6254 /* Oh dear, we can't reach a trampoline. Don't try to add
6255 one. We'll report an error later. */
6258 if (link_info->shared)
6260 size = 4 * ARRAY_SIZE (shared_stub_entry);
6265 size = 4 * ARRAY_SIZE (stub_entry);
6268 stub_rtype = R_PPC_RELAX;
6269 if (tsec == htab->plt
6270 || tsec == htab->glink)
6272 stub_rtype = R_PPC_RELAX_PLT;
6273 if (r_type == R_PPC_PLTREL24)
6274 stub_rtype = R_PPC_RELAX_PLTREL24;
6277 /* Hijack the old relocation. Since we need two
6278 relocations for this use a "composite" reloc. */
6279 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6281 irel->r_offset = trampoff + insn_offset;
6282 if (r_type == R_PPC_PLTREL24
6283 && stub_rtype != R_PPC_RELAX_PLTREL24)
6286 /* Record the fixup so we don't do it again this section. */
6287 f = bfd_malloc (sizeof (*f));
6291 f->trampoff = trampoff;
6299 val = f->trampoff - roff;
6300 if (val >= max_branch_offset)
6303 /* Nop out the reloc, since we're finalizing things here. */
6304 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6307 /* Get the section contents. */
6308 if (contents == NULL)
6310 /* Get cached copy if it exists. */
6311 if (elf_section_data (isec)->this_hdr.contents != NULL)
6312 contents = elf_section_data (isec)->this_hdr.contents;
6315 /* Go get them off disk. */
6316 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6321 /* Fix up the existing branch to hit the trampoline. */
6322 hit_addr = contents + roff;
6326 case R_PPC_LOCAL24PC:
6327 case R_PPC_PLTREL24:
6328 t0 = bfd_get_32 (abfd, hit_addr);
6330 t0 |= val & 0x3fffffc;
6331 bfd_put_32 (abfd, t0, hit_addr);
6335 case R_PPC_REL14_BRTAKEN:
6336 case R_PPC_REL14_BRNTAKEN:
6337 t0 = bfd_get_32 (abfd, hit_addr);
6340 bfd_put_32 (abfd, t0, hit_addr);
6345 /* Write out the trampolines. */
6354 struct one_fixup *f = fixups;
6355 fixups = fixups->next;
6360 contents = bfd_realloc_or_free (contents, trampoff);
6361 if (contents == NULL)
6364 isec->size = (isec->size + 3) & (bfd_vma) -4;
6365 dest = contents + isec->size;
6366 /* Branch around the trampolines. */
6369 bfd_vma val = B + trampoff - isec->size;
6370 bfd_put_32 (abfd, val, dest);
6373 isec->size = trampoff;
6375 if (link_info->shared)
6377 stub = shared_stub_entry;
6378 size = ARRAY_SIZE (shared_stub_entry);
6383 size = ARRAY_SIZE (stub_entry);
6387 while (dest < contents + trampoff)
6389 bfd_put_32 (abfd, stub[i], dest);
6395 BFD_ASSERT (i == 0);
6399 && symtab_hdr->contents != (unsigned char *) isymbuf)
6401 if (! link_info->keep_memory)
6405 /* Cache the symbols for elf_link_input_bfd. */
6406 symtab_hdr->contents = (unsigned char *) isymbuf;
6410 if (contents != NULL
6411 && elf_section_data (isec)->this_hdr.contents != contents)
6413 if (!changes && !link_info->keep_memory)
6417 /* Cache the section contents for elf_link_input_bfd. */
6418 elf_section_data (isec)->this_hdr.contents = contents;
6424 /* Append sufficient NOP relocs so we can write out relocation
6425 information for the trampolines. */
6426 Elf_Internal_Shdr *rel_hdr;
6427 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6428 * sizeof (*new_relocs));
6433 memcpy (new_relocs, internal_relocs,
6434 isec->reloc_count * sizeof (*new_relocs));
6435 for (ix = changes; ix--;)
6437 irel = new_relocs + ix + isec->reloc_count;
6439 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6441 if (internal_relocs != elf_section_data (isec)->relocs)
6442 free (internal_relocs);
6443 elf_section_data (isec)->relocs = new_relocs;
6444 isec->reloc_count += changes;
6445 rel_hdr = _bfd_elf_single_rel_hdr (isec);
6446 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
6448 else if (elf_section_data (isec)->relocs != internal_relocs)
6449 free (internal_relocs);
6451 *again = changes != 0;
6452 if (!*again && link_info->relocatable)
6454 /* Convert the internal relax relocs to external form. */
6455 for (irel = internal_relocs; irel < irelend; irel++)
6456 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
6458 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6460 /* Rewrite the reloc and convert one of the trailing nop
6461 relocs to describe this relocation. */
6462 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6463 /* The relocs are at the bottom 2 bytes */
6464 irel[0].r_offset += 2;
6465 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6466 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6467 irel[1].r_offset += 4;
6468 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6476 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6478 if (contents != NULL
6479 && elf_section_data (isec)->this_hdr.contents != contents)
6481 if (internal_relocs != NULL
6482 && elf_section_data (isec)->relocs != internal_relocs)
6483 free (internal_relocs);
6487 /* What to do when ld finds relocations against symbols defined in
6488 discarded sections. */
6491 ppc_elf_action_discarded (asection *sec)
6493 if (strcmp (".fixup", sec->name) == 0)
6496 if (strcmp (".got2", sec->name) == 0)
6499 return _bfd_elf_default_action_discarded (sec);
6502 /* Fill in the address for a pointer generated in a linker section. */
6505 elf_finish_pointer_linker_section (bfd *input_bfd,
6506 elf_linker_section_t *lsect,
6507 struct elf_link_hash_entry *h,
6509 const Elf_Internal_Rela *rel)
6511 elf_linker_section_pointers_t *linker_section_ptr;
6513 BFD_ASSERT (lsect != NULL);
6517 /* Handle global symbol. */
6518 struct ppc_elf_link_hash_entry *eh;
6520 eh = (struct ppc_elf_link_hash_entry *) h;
6521 BFD_ASSERT (eh->elf.def_regular);
6522 linker_section_ptr = eh->linker_section_pointer;
6526 /* Handle local symbol. */
6527 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6529 BFD_ASSERT (is_ppc_elf (input_bfd));
6530 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6531 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6534 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6537 BFD_ASSERT (linker_section_ptr != NULL);
6539 /* Offset will always be a multiple of four, so use the bottom bit
6540 as a "written" flag. */
6541 if ((linker_section_ptr->offset & 1) == 0)
6543 bfd_put_32 (lsect->section->owner,
6544 relocation + linker_section_ptr->addend,
6545 lsect->section->contents + linker_section_ptr->offset);
6546 linker_section_ptr->offset += 1;
6549 relocation = (lsect->section->output_section->vma
6550 + lsect->section->output_offset
6551 + linker_section_ptr->offset - 1
6552 - SYM_VAL (lsect->sym));
6556 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6557 lsect->name, (long) relocation, (long) relocation);
6563 #define PPC_LO(v) ((v) & 0xffff)
6564 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6565 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6568 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
6569 struct bfd_link_info *info)
6571 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6572 bfd *output_bfd = info->output_bfd;
6575 plt = ((ent->plt.offset & ~1)
6576 + plt_sec->output_section->vma
6577 + plt_sec->output_offset);
6583 if (ent->addend >= 32768)
6585 + ent->sec->output_section->vma
6586 + ent->sec->output_offset);
6587 else if (htab->elf.hgot != NULL)
6588 got = SYM_VAL (htab->elf.hgot);
6592 if (plt + 0x8000 < 0x10000)
6594 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6596 bfd_put_32 (output_bfd, MTCTR_11, p);
6598 bfd_put_32 (output_bfd, BCTR, p);
6600 bfd_put_32 (output_bfd, NOP, p);
6605 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6607 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6609 bfd_put_32 (output_bfd, MTCTR_11, p);
6611 bfd_put_32 (output_bfd, BCTR, p);
6617 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6619 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6621 bfd_put_32 (output_bfd, MTCTR_11, p);
6623 bfd_put_32 (output_bfd, BCTR, p);
6628 /* Return true if symbol is defined statically. */
6631 is_static_defined (struct elf_link_hash_entry *h)
6633 return ((h->root.type == bfd_link_hash_defined
6634 || h->root.type == bfd_link_hash_defweak)
6635 && h->root.u.def.section != NULL
6636 && h->root.u.def.section->output_section != NULL);
6639 /* If INSN is an opcode that may be used with an @tls operand, return
6640 the transformed insn for TLS optimisation, otherwise return 0. If
6641 REG is non-zero only match an insn with RB or RA equal to REG. */
6644 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
6648 if ((insn & (0x3f << 26)) != 31 << 26)
6651 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
6652 rtra = insn & ((1 << 26) - (1 << 16));
6653 else if (((insn >> 16) & 0x1f) == reg)
6654 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
6658 if ((insn & (0x3ff << 1)) == 266 << 1)
6661 else if ((insn & (0x1f << 1)) == 23 << 1
6662 && ((insn & (0x1f << 6)) < 14 << 6
6663 || ((insn & (0x1f << 6)) >= 16 << 6
6664 && (insn & (0x1f << 6)) < 24 << 6)))
6665 /* load and store indexed -> dform. */
6666 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
6667 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
6668 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6669 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
6670 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
6672 insn = (58 << 26) | 2;
6679 /* If INSN is an opcode that may be used with an @tprel operand, return
6680 the transformed insn for an undefined weak symbol, ie. with the
6681 thread pointer REG operand removed. Otherwise return 0. */
6684 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
6686 if ((insn & (0x1f << 16)) == reg << 16
6687 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
6688 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
6689 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
6690 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
6691 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
6692 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
6693 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
6694 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
6695 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
6696 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
6697 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
6698 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
6699 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
6700 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
6701 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
6702 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
6704 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
6705 && ((insn & 3) == 0 || (insn & 3) == 3))))
6707 insn &= ~(0x1f << 16);
6709 else if ((insn & (0x1f << 21)) == reg << 21
6710 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
6711 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
6712 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
6714 insn &= ~(0x1f << 21);
6715 insn |= (insn & (0x1f << 16)) << 5;
6716 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
6717 insn -= 2 >> 26; /* convert to ori,oris */
6724 /* The RELOCATE_SECTION function is called by the ELF backend linker
6725 to handle the relocations for a section.
6727 The relocs are always passed as Rela structures; if the section
6728 actually uses Rel structures, the r_addend field will always be
6731 This function is responsible for adjust the section contents as
6732 necessary, and (if using Rela relocs and generating a
6733 relocatable output file) adjusting the reloc addend as
6736 This function does not have to worry about setting the reloc
6737 address or the reloc symbol index.
6739 LOCAL_SYMS is a pointer to the swapped in local symbols.
6741 LOCAL_SECTIONS is an array giving the section in the input file
6742 corresponding to the st_shndx field of each local symbol.
6744 The global hash table entry for the global symbols can be found
6745 via elf_sym_hashes (input_bfd).
6747 When generating relocatable output, this function must handle
6748 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6749 going to be the section symbol corresponding to the output
6750 section, which means that the addend must be adjusted
6754 ppc_elf_relocate_section (bfd *output_bfd,
6755 struct bfd_link_info *info,
6757 asection *input_section,
6759 Elf_Internal_Rela *relocs,
6760 Elf_Internal_Sym *local_syms,
6761 asection **local_sections)
6763 Elf_Internal_Shdr *symtab_hdr;
6764 struct elf_link_hash_entry **sym_hashes;
6765 struct ppc_elf_link_hash_table *htab;
6766 Elf_Internal_Rela *rel;
6767 Elf_Internal_Rela *relend;
6768 Elf_Internal_Rela outrel;
6769 asection *got2, *sreloc = NULL;
6770 bfd_vma *local_got_offsets;
6771 bfd_boolean ret = TRUE;
6772 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6773 bfd_boolean is_vxworks_tls;
6776 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6777 "%ld relocations%s",
6778 input_bfd, input_section,
6779 (long) input_section->reloc_count,
6780 (info->relocatable) ? " (relocatable)" : "");
6783 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6785 /* Initialize howto table if not already done. */
6786 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6787 ppc_elf_howto_init ();
6789 htab = ppc_elf_hash_table (info);
6790 local_got_offsets = elf_local_got_offsets (input_bfd);
6791 symtab_hdr = &elf_symtab_hdr (input_bfd);
6792 sym_hashes = elf_sym_hashes (input_bfd);
6793 /* We have to handle relocations in vxworks .tls_vars sections
6794 specially, because the dynamic loader is 'weird'. */
6795 is_vxworks_tls = (htab->is_vxworks && info->shared
6796 && !strcmp (input_section->output_section->name,
6799 relend = relocs + input_section->reloc_count;
6800 for (; rel < relend; rel++)
6802 enum elf_ppc_reloc_type r_type;
6804 bfd_reloc_status_type r;
6805 Elf_Internal_Sym *sym;
6807 struct elf_link_hash_entry *h;
6808 const char *sym_name;
6809 reloc_howto_type *howto;
6810 unsigned long r_symndx;
6812 bfd_vma branch_bit, from;
6813 bfd_boolean unresolved_reloc;
6815 unsigned int tls_type, tls_mask, tls_gd;
6816 struct plt_entry **ifunc;
6818 r_type = ELF32_R_TYPE (rel->r_info);
6822 unresolved_reloc = FALSE;
6824 r_symndx = ELF32_R_SYM (rel->r_info);
6826 if (r_symndx < symtab_hdr->sh_info)
6828 sym = local_syms + r_symndx;
6829 sec = local_sections[r_symndx];
6830 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6832 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6836 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6837 r_symndx, symtab_hdr, sym_hashes,
6839 unresolved_reloc, warned);
6841 sym_name = h->root.root.string;
6844 if (sec != NULL && elf_discarded_section (sec))
6846 /* For relocs against symbols from removed linkonce sections,
6847 or sections discarded by a linker script, we just want the
6848 section contents zeroed. Avoid any special processing. */
6850 if (r_type < R_PPC_max)
6851 howto = ppc_elf_howto_table[r_type];
6852 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6853 rel, relend, howto, contents);
6856 if (info->relocatable)
6859 && r_type == R_PPC_PLTREL24
6860 && rel->r_addend >= 32768)
6862 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6863 addend specifies the GOT pointer offset within .got2. */
6864 rel->r_addend += got2->output_offset;
6869 /* TLS optimizations. Replace instruction sequences and relocs
6870 based on information we collected in tls_optimize. We edit
6871 RELOCS so that --emit-relocs will output something sensible
6872 for the final instruction stream. */
6876 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6877 else if (local_got_offsets != NULL)
6879 struct plt_entry **local_plt;
6882 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6883 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
6884 tls_mask = lgot_masks[r_symndx];
6887 /* Ensure reloc mapping code below stays sane. */
6888 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6889 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6890 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6891 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6892 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6893 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6894 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6895 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6902 case R_PPC_GOT_TPREL16:
6903 case R_PPC_GOT_TPREL16_LO:
6904 if ((tls_mask & TLS_TLS) != 0
6905 && (tls_mask & TLS_TPREL) == 0)
6909 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6911 insn |= 0x3c020000; /* addis 0,2,0 */
6912 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6913 r_type = R_PPC_TPREL16_HA;
6914 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6919 if ((tls_mask & TLS_TLS) != 0
6920 && (tls_mask & TLS_TPREL) == 0)
6924 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6925 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
6928 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6929 r_type = R_PPC_TPREL16_LO;
6930 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6932 /* Was PPC_TLS which sits on insn boundary, now
6933 PPC_TPREL16_LO which is at low-order half-word. */
6934 rel->r_offset += d_offset;
6938 case R_PPC_GOT_TLSGD16_HI:
6939 case R_PPC_GOT_TLSGD16_HA:
6940 tls_gd = TLS_TPRELGD;
6941 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6945 case R_PPC_GOT_TLSLD16_HI:
6946 case R_PPC_GOT_TLSLD16_HA:
6947 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6950 if ((tls_mask & tls_gd) != 0)
6951 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6952 + R_PPC_GOT_TPREL16);
6955 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6956 rel->r_offset -= d_offset;
6957 r_type = R_PPC_NONE;
6959 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6963 case R_PPC_GOT_TLSGD16:
6964 case R_PPC_GOT_TLSGD16_LO:
6965 tls_gd = TLS_TPRELGD;
6966 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6970 case R_PPC_GOT_TLSLD16:
6971 case R_PPC_GOT_TLSLD16_LO:
6972 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6974 unsigned int insn1, insn2;
6978 offset = (bfd_vma) -1;
6979 /* If not using the newer R_PPC_TLSGD/LD to mark
6980 __tls_get_addr calls, we must trust that the call
6981 stays with its arg setup insns, ie. that the next
6982 reloc is the __tls_get_addr call associated with
6983 the current reloc. Edit both insns. */
6984 if (input_section->has_tls_get_addr_call
6986 && branch_reloc_hash_match (input_bfd, rel + 1,
6987 htab->tls_get_addr))
6988 offset = rel[1].r_offset;
6989 if ((tls_mask & tls_gd) != 0)
6992 insn1 = bfd_get_32 (output_bfd,
6993 contents + rel->r_offset - d_offset);
6994 insn1 &= (1 << 26) - 1;
6995 insn1 |= 32 << 26; /* lwz */
6996 if (offset != (bfd_vma) -1)
6998 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
6999 insn2 = 0x7c631214; /* add 3,3,2 */
7000 bfd_put_32 (output_bfd, insn2, contents + offset);
7002 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7003 + R_PPC_GOT_TPREL16);
7004 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7009 insn1 = 0x3c620000; /* addis 3,2,0 */
7012 /* Was an LD reloc. */
7014 r_symndx < symtab_hdr->sh_info;
7016 if (local_sections[r_symndx] == sec)
7018 if (r_symndx >= symtab_hdr->sh_info)
7019 r_symndx = STN_UNDEF;
7020 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7021 if (r_symndx != STN_UNDEF)
7022 rel->r_addend -= (local_syms[r_symndx].st_value
7023 + sec->output_offset
7024 + sec->output_section->vma);
7026 r_type = R_PPC_TPREL16_HA;
7027 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7028 if (offset != (bfd_vma) -1)
7030 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7031 rel[1].r_offset = offset + d_offset;
7032 rel[1].r_addend = rel->r_addend;
7033 insn2 = 0x38630000; /* addi 3,3,0 */
7034 bfd_put_32 (output_bfd, insn2, contents + offset);
7037 bfd_put_32 (output_bfd, insn1,
7038 contents + rel->r_offset - d_offset);
7041 /* We changed the symbol on an LD reloc. Start over
7042 in order to get h, sym, sec etc. right. */
7050 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7053 bfd_vma offset = rel->r_offset;
7055 if ((tls_mask & TLS_TPRELGD) != 0)
7058 r_type = R_PPC_NONE;
7059 insn2 = 0x7c631214; /* add 3,3,2 */
7064 r_type = R_PPC_TPREL16_LO;
7065 rel->r_offset += d_offset;
7066 insn2 = 0x38630000; /* addi 3,3,0 */
7068 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7069 bfd_put_32 (output_bfd, insn2, contents + offset);
7070 /* Zap the reloc on the _tls_get_addr call too. */
7071 BFD_ASSERT (offset == rel[1].r_offset);
7072 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7077 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7082 r_symndx < symtab_hdr->sh_info;
7084 if (local_sections[r_symndx] == sec)
7086 if (r_symndx >= symtab_hdr->sh_info)
7087 r_symndx = STN_UNDEF;
7088 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7089 if (r_symndx != STN_UNDEF)
7090 rel->r_addend -= (local_syms[r_symndx].st_value
7091 + sec->output_offset
7092 + sec->output_section->vma);
7094 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7095 rel->r_offset += d_offset;
7096 insn2 = 0x38630000; /* addi 3,3,0 */
7097 bfd_put_32 (output_bfd, insn2,
7098 contents + rel->r_offset - d_offset);
7099 /* Zap the reloc on the _tls_get_addr call too. */
7100 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7101 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7108 /* Handle other relocations that tweak non-addend part of insn. */
7115 /* Branch taken prediction relocations. */
7116 case R_PPC_ADDR14_BRTAKEN:
7117 case R_PPC_REL14_BRTAKEN:
7118 branch_bit = BRANCH_PREDICT_BIT;
7121 /* Branch not taken prediction relocations. */
7122 case R_PPC_ADDR14_BRNTAKEN:
7123 case R_PPC_REL14_BRNTAKEN:
7127 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7128 insn &= ~BRANCH_PREDICT_BIT;
7131 from = (rel->r_offset
7132 + input_section->output_offset
7133 + input_section->output_section->vma);
7135 /* Invert 'y' bit if not the default. */
7136 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7137 insn ^= BRANCH_PREDICT_BIT;
7139 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7145 if (!htab->is_vxworks)
7147 struct plt_entry *ent;
7151 if (h->type == STT_GNU_IFUNC)
7152 ifunc = &h->plt.plist;
7154 else if (local_got_offsets != NULL
7155 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7157 struct plt_entry **local_plt;
7159 local_plt = (struct plt_entry **) (local_got_offsets
7160 + symtab_hdr->sh_info);
7161 ifunc = local_plt + r_symndx;
7167 || is_branch_reloc (r_type)))
7170 if (r_type == R_PPC_PLTREL24 && info->shared)
7171 addend = rel->r_addend;
7172 ent = find_plt_ent (ifunc, got2, addend);
7176 if (h == NULL && (ent->plt.offset & 1) == 0)
7178 Elf_Internal_Rela rela;
7181 rela.r_offset = (htab->iplt->output_section->vma
7182 + htab->iplt->output_offset
7184 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7185 rela.r_addend = relocation;
7186 loc = htab->reliplt->contents;
7187 loc += (htab->reliplt->reloc_count++
7188 * sizeof (Elf32_External_Rela));
7189 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7191 ent->plt.offset |= 1;
7193 if (h == NULL && (ent->glink_offset & 1) == 0)
7195 unsigned char *p = ((unsigned char *) htab->glink->contents
7196 + ent->glink_offset);
7197 write_glink_stub (ent, htab->iplt, p, info);
7198 ent->glink_offset |= 1;
7201 unresolved_reloc = FALSE;
7202 if (htab->plt_type == PLT_NEW
7203 || !htab->elf.dynamic_sections_created
7205 relocation = (htab->glink->output_section->vma
7206 + htab->glink->output_offset
7207 + (ent->glink_offset & ~1));
7209 relocation = (htab->plt->output_section->vma
7210 + htab->plt->output_offset
7215 addend = rel->r_addend;
7218 if (r_type < R_PPC_max)
7219 howto = ppc_elf_howto_table[r_type];
7223 (*_bfd_error_handler)
7224 (_("%B: unknown relocation type %d for symbol %s"),
7225 input_bfd, (int) r_type, sym_name);
7227 bfd_set_error (bfd_error_bad_value);
7235 case R_PPC_EMB_MRKREF:
7236 case R_PPC_GNU_VTINHERIT:
7237 case R_PPC_GNU_VTENTRY:
7240 /* GOT16 relocations. Like an ADDR16 using the symbol's
7241 address in the GOT as relocation value instead of the
7242 symbol's value itself. Also, create a GOT entry for the
7243 symbol and put the symbol value there. */
7244 case R_PPC_GOT_TLSGD16:
7245 case R_PPC_GOT_TLSGD16_LO:
7246 case R_PPC_GOT_TLSGD16_HI:
7247 case R_PPC_GOT_TLSGD16_HA:
7248 tls_type = TLS_TLS | TLS_GD;
7251 case R_PPC_GOT_TLSLD16:
7252 case R_PPC_GOT_TLSLD16_LO:
7253 case R_PPC_GOT_TLSLD16_HI:
7254 case R_PPC_GOT_TLSLD16_HA:
7255 tls_type = TLS_TLS | TLS_LD;
7258 case R_PPC_GOT_TPREL16:
7259 case R_PPC_GOT_TPREL16_LO:
7260 case R_PPC_GOT_TPREL16_HI:
7261 case R_PPC_GOT_TPREL16_HA:
7262 tls_type = TLS_TLS | TLS_TPREL;
7265 case R_PPC_GOT_DTPREL16:
7266 case R_PPC_GOT_DTPREL16_LO:
7267 case R_PPC_GOT_DTPREL16_HI:
7268 case R_PPC_GOT_DTPREL16_HA:
7269 tls_type = TLS_TLS | TLS_DTPREL;
7273 case R_PPC_GOT16_LO:
7274 case R_PPC_GOT16_HI:
7275 case R_PPC_GOT16_HA:
7279 /* Relocation is to the entry for this symbol in the global
7285 if (htab->got == NULL)
7289 if (tls_type == (TLS_TLS | TLS_LD)
7291 || !h->def_dynamic))
7292 offp = &htab->tlsld_got.offset;
7296 dyn = htab->elf.dynamic_sections_created;
7297 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7299 && SYMBOL_REFERENCES_LOCAL (info, h)))
7300 /* This is actually a static link, or it is a
7301 -Bsymbolic link and the symbol is defined
7302 locally, or the symbol was forced to be local
7303 because of a version file. */
7308 unresolved_reloc = FALSE;
7310 offp = &h->got.offset;
7314 if (local_got_offsets == NULL)
7316 offp = &local_got_offsets[r_symndx];
7319 /* The offset must always be a multiple of 4. We use the
7320 least significant bit to record whether we have already
7321 processed this entry. */
7327 unsigned int tls_m = (tls_mask
7328 & (TLS_LD | TLS_GD | TLS_DTPREL
7329 | TLS_TPREL | TLS_TPRELGD));
7331 if (offp == &htab->tlsld_got.offset)
7337 /* We might have multiple got entries for this sym.
7338 Initialize them all. */
7343 if ((tls_m & TLS_LD) != 0)
7345 tls_ty = TLS_TLS | TLS_LD;
7348 else if ((tls_m & TLS_GD) != 0)
7350 tls_ty = TLS_TLS | TLS_GD;
7353 else if ((tls_m & TLS_DTPREL) != 0)
7355 tls_ty = TLS_TLS | TLS_DTPREL;
7356 tls_m &= ~TLS_DTPREL;
7358 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7360 tls_ty = TLS_TLS | TLS_TPREL;
7364 /* Generate relocs for the dynamic linker. */
7365 if ((info->shared || indx != 0)
7366 && (offp == &htab->tlsld_got.offset
7368 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7369 || h->root.type != bfd_link_hash_undefweak))
7371 asection *rsec = htab->relgot;
7374 outrel.r_offset = (htab->got->output_section->vma
7375 + htab->got->output_offset
7377 outrel.r_addend = 0;
7378 if (tls_ty & (TLS_LD | TLS_GD))
7380 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7381 if (tls_ty == (TLS_TLS | TLS_GD))
7383 loc = rsec->contents;
7384 loc += (rsec->reloc_count++
7385 * sizeof (Elf32_External_Rela));
7386 bfd_elf32_swap_reloca_out (output_bfd,
7388 outrel.r_offset += 4;
7390 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7393 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7394 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7395 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7396 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7398 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7399 else if (ifunc != NULL)
7400 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7402 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7403 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7405 outrel.r_addend += relocation;
7406 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7407 outrel.r_addend -= htab->elf.tls_sec->vma;
7409 loc = rsec->contents;
7410 loc += (rsec->reloc_count++
7411 * sizeof (Elf32_External_Rela));
7412 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7415 /* Init the .got section contents if we're not
7416 emitting a reloc. */
7419 bfd_vma value = relocation;
7421 if (tls_ty == (TLS_TLS | TLS_LD))
7423 else if (tls_ty != 0)
7425 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7426 if (tls_ty == (TLS_TLS | TLS_TPREL))
7427 value += DTP_OFFSET - TP_OFFSET;
7429 if (tls_ty == (TLS_TLS | TLS_GD))
7431 bfd_put_32 (output_bfd, value,
7432 htab->got->contents + off + 4);
7436 bfd_put_32 (output_bfd, value,
7437 htab->got->contents + off);
7441 if (tls_ty & (TLS_LD | TLS_GD))
7450 if (off >= (bfd_vma) -2)
7453 if ((tls_type & TLS_TLS) != 0)
7455 if (tls_type != (TLS_TLS | TLS_LD))
7457 if ((tls_mask & TLS_LD) != 0
7459 || !h->def_dynamic))
7461 if (tls_type != (TLS_TLS | TLS_GD))
7463 if ((tls_mask & TLS_GD) != 0)
7465 if (tls_type != (TLS_TLS | TLS_DTPREL))
7467 if ((tls_mask & TLS_DTPREL) != 0)
7474 relocation = (htab->got->output_section->vma
7475 + htab->got->output_offset
7477 - SYM_VAL (htab->elf.hgot));
7479 /* Addends on got relocations don't make much sense.
7480 x+off@got is actually x@got+off, and since the got is
7481 generated by a hash table traversal, the value in the
7482 got at entry m+n bears little relation to the entry m. */
7484 (*_bfd_error_handler)
7485 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
7488 (long) rel->r_offset,
7494 /* Relocations that need no special processing. */
7495 case R_PPC_LOCAL24PC:
7496 /* It makes no sense to point a local relocation
7497 at a symbol not in this object. */
7498 if (unresolved_reloc)
7500 if (! (*info->callbacks->undefined_symbol) (info,
7501 h->root.root.string,
7511 case R_PPC_DTPREL16:
7512 case R_PPC_DTPREL16_LO:
7513 case R_PPC_DTPREL16_HI:
7514 case R_PPC_DTPREL16_HA:
7515 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7518 /* Relocations that may need to be propagated if this is a shared
7521 case R_PPC_TPREL16_LO:
7522 case R_PPC_TPREL16_HI:
7523 case R_PPC_TPREL16_HA:
7525 && h->root.type == bfd_link_hash_undefweak
7526 && h->dynindx == -1)
7528 /* Make this relocation against an undefined weak symbol
7529 resolve to zero. This is really just a tweak, since
7530 code using weak externs ought to check that they are
7531 defined before using them. */
7532 bfd_byte *p = contents + rel->r_offset - d_offset;
7533 unsigned int insn = bfd_get_32 (output_bfd, p);
7534 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
7536 bfd_put_32 (output_bfd, insn, p);
7539 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7540 /* The TPREL16 relocs shouldn't really be used in shared
7541 libs as they will result in DT_TEXTREL being set, but
7542 support them anyway. */
7546 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7549 case R_PPC_DTPREL32:
7550 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7553 case R_PPC_DTPMOD32:
7559 case R_PPC_REL16_LO:
7560 case R_PPC_REL16_HI:
7561 case R_PPC_REL16_HA:
7565 if (h == NULL || h == htab->elf.hgot)
7571 case R_PPC_ADDR16_LO:
7572 case R_PPC_ADDR16_HI:
7573 case R_PPC_ADDR16_HA:
7580 case R_PPC_REL14_BRTAKEN:
7581 case R_PPC_REL14_BRNTAKEN:
7582 /* If these relocations are not to a named symbol, they can be
7583 handled right here, no need to bother the dynamic linker. */
7584 if (SYMBOL_CALLS_LOCAL (info, h)
7585 || h == htab->elf.hgot)
7591 case R_PPC_ADDR14_BRTAKEN:
7592 case R_PPC_ADDR14_BRNTAKEN:
7593 if (h != NULL && !info->shared)
7598 if ((input_section->flags & SEC_ALLOC) == 0
7604 && ((h->root.type == bfd_link_hash_undefined
7605 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7606 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7607 || (h->root.type == bfd_link_hash_undefweak
7608 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
7609 && (must_be_dyn_reloc (info, r_type)
7610 || !SYMBOL_CALLS_LOCAL (info, h)))
7611 || (ELIMINATE_COPY_RELOCS
7616 && !h->def_regular))
7621 fprintf (stderr, "ppc_elf_relocate_section needs to "
7622 "create relocation for %s\n",
7623 (h && h->root.root.string
7624 ? h->root.root.string : "<unknown>"));
7627 /* When generating a shared object, these relocations
7628 are copied into the output file to be resolved at run
7632 sreloc = elf_section_data (input_section)->sreloc;
7633 if (!htab->elf.dynamic_sections_created)
7634 sreloc = htab->reliplt;
7640 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
7643 if (outrel.r_offset == (bfd_vma) -1
7644 || outrel.r_offset == (bfd_vma) -2)
7645 skip = (int) outrel.r_offset;
7646 outrel.r_offset += (input_section->output_section->vma
7647 + input_section->output_offset);
7650 memset (&outrel, 0, sizeof outrel);
7652 && (h->root.type == bfd_link_hash_undefined
7653 || h->root.type == bfd_link_hash_undefweak))
7654 || !SYMBOL_REFERENCES_LOCAL (info, h))
7656 unresolved_reloc = FALSE;
7657 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7658 outrel.r_addend = rel->r_addend;
7662 outrel.r_addend = relocation + rel->r_addend;
7664 if (r_type != R_PPC_ADDR32)
7670 /* If we get here when building a static
7671 executable, then the libc startup function
7672 responsible for applying indirect function
7673 relocations is going to complain about
7675 If we get here when building a dynamic
7676 executable, it will be because we have
7677 a text relocation. The dynamic loader
7678 will set the text segment writable and
7679 non-executable to apply text relocations.
7680 So we'll segfault when trying to run the
7681 indirection function to resolve the reloc. */
7682 (*_bfd_error_handler)
7683 (_("%B(%A+0x%lx): relocation %s for indirect "
7684 "function %s unsupported"),
7687 (long) rel->r_offset,
7692 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
7694 else if (sec == NULL || sec->owner == NULL)
7696 bfd_set_error (bfd_error_bad_value);
7703 /* We are turning this relocation into one
7704 against a section symbol. It would be
7705 proper to subtract the symbol's value,
7706 osec->vma, from the emitted reloc addend,
7707 but ld.so expects buggy relocs.
7708 FIXME: Why not always use a zero index? */
7709 osec = sec->output_section;
7710 indx = elf_section_data (osec)->dynindx;
7713 osec = htab->elf.text_index_section;
7714 indx = elf_section_data (osec)->dynindx;
7716 BFD_ASSERT (indx != 0);
7719 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7720 indx, osec->name, osec->flags,
7721 h->root.root.string);
7725 outrel.r_info = ELF32_R_INFO (indx, r_type);
7727 else if (ifunc != NULL)
7728 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7730 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7733 loc = sreloc->contents;
7734 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7735 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7740 /* This reloc will be computed at runtime. We clear the memory
7741 so that it contains predictable value. */
7743 && ((input_section->flags & SEC_ALLOC) != 0
7744 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7746 relocation = howto->pc_relative ? outrel.r_offset : 0;
7753 case R_PPC_RELAX_PLT:
7754 case R_PPC_RELAX_PLTREL24:
7757 struct plt_entry *ent;
7758 bfd_vma got2_addend = 0;
7760 if (r_type == R_PPC_RELAX_PLTREL24)
7763 got2_addend = addend;
7766 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
7767 if (htab->plt_type == PLT_NEW)
7768 relocation = (htab->glink->output_section->vma
7769 + htab->glink->output_offset
7770 + ent->glink_offset);
7772 relocation = (htab->plt->output_section->vma
7773 + htab->plt->output_offset
7780 relocation -= (input_section->output_section->vma
7781 + input_section->output_offset
7782 + rel->r_offset - 4);
7788 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7789 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7791 /* We're clearing the bits for R_PPC_ADDR16_HA
7792 and R_PPC_ADDR16_LO here. */
7796 /* t0 is HA, t1 is LO */
7797 relocation += addend;
7798 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7799 t1 |= relocation & 0xffff;
7801 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7802 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
7804 /* Rewrite the reloc and convert one of the trailing nop
7805 relocs to describe this relocation. */
7806 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7807 /* The relocs are at the bottom 2 bytes */
7808 rel[0].r_offset += 2;
7809 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7810 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7811 rel[1].r_offset += 4;
7812 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7817 /* Indirect .sdata relocation. */
7818 case R_PPC_EMB_SDAI16:
7819 BFD_ASSERT (htab->sdata[0].section != NULL);
7820 if (!is_static_defined (htab->sdata[0].sym))
7822 unresolved_reloc = TRUE;
7826 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7827 h, relocation, rel);
7831 /* Indirect .sdata2 relocation. */
7832 case R_PPC_EMB_SDA2I16:
7833 BFD_ASSERT (htab->sdata[1].section != NULL);
7834 if (!is_static_defined (htab->sdata[1].sym))
7836 unresolved_reloc = TRUE;
7840 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7841 h, relocation, rel);
7845 /* Handle the TOC16 reloc. We want to use the offset within the .got
7846 section, not the actual VMA. This is appropriate when generating
7847 an embedded ELF object, for which the .got section acts like the
7848 AIX .toc section. */
7849 case R_PPC_TOC16: /* phony GOT16 relocations */
7850 if (sec == NULL || sec->output_section == NULL)
7852 unresolved_reloc = TRUE;
7855 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7856 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7858 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7861 case R_PPC_PLTREL24:
7862 if (h == NULL || ifunc != NULL)
7864 /* Relocation is to the entry for this symbol in the
7865 procedure linkage table. */
7867 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7868 info->shared ? addend : 0);
7871 || htab->plt == NULL)
7873 /* We didn't make a PLT entry for this symbol. This
7874 happens when statically linking PIC code, or when
7875 using -Bsymbolic. */
7879 unresolved_reloc = FALSE;
7880 if (htab->plt_type == PLT_NEW)
7881 relocation = (htab->glink->output_section->vma
7882 + htab->glink->output_offset
7883 + ent->glink_offset);
7885 relocation = (htab->plt->output_section->vma
7886 + htab->plt->output_offset
7891 /* Relocate against _SDA_BASE_. */
7892 case R_PPC_SDAREL16:
7895 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
7898 || sec->output_section == NULL
7899 || !is_static_defined (sda))
7901 unresolved_reloc = TRUE;
7904 addend -= SYM_VAL (sda);
7906 name = bfd_get_section_name (abfd, sec->output_section);
7907 if (! ((CONST_STRNEQ (name, ".sdata")
7908 && (name[6] == 0 || name[6] == '.'))
7909 || (CONST_STRNEQ (name, ".sbss")
7910 && (name[5] == 0 || name[5] == '.'))))
7912 (*_bfd_error_handler)
7913 (_("%B: the target (%s) of a %s relocation is "
7914 "in the wrong output section (%s)"),
7923 /* Relocate against _SDA2_BASE_. */
7924 case R_PPC_EMB_SDA2REL:
7927 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
7930 || sec->output_section == NULL
7931 || !is_static_defined (sda))
7933 unresolved_reloc = TRUE;
7936 addend -= SYM_VAL (sda);
7938 name = bfd_get_section_name (abfd, sec->output_section);
7939 if (! (CONST_STRNEQ (name, ".sdata2")
7940 || CONST_STRNEQ (name, ".sbss2")))
7942 (*_bfd_error_handler)
7943 (_("%B: the target (%s) of a %s relocation is "
7944 "in the wrong output section (%s)"),
7953 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7954 case R_PPC_EMB_SDA21:
7955 case R_PPC_EMB_RELSDA:
7959 struct elf_link_hash_entry *sda = NULL;
7961 if (sec == NULL || sec->output_section == NULL)
7963 unresolved_reloc = TRUE;
7967 name = bfd_get_section_name (abfd, sec->output_section);
7968 if (((CONST_STRNEQ (name, ".sdata")
7969 && (name[6] == 0 || name[6] == '.'))
7970 || (CONST_STRNEQ (name, ".sbss")
7971 && (name[5] == 0 || name[5] == '.'))))
7974 sda = htab->sdata[0].sym;
7976 else if (CONST_STRNEQ (name, ".sdata2")
7977 || CONST_STRNEQ (name, ".sbss2"))
7980 sda = htab->sdata[1].sym;
7982 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7983 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7989 (*_bfd_error_handler)
7990 (_("%B: the target (%s) of a %s relocation is "
7991 "in the wrong output section (%s)"),
7997 bfd_set_error (bfd_error_bad_value);
8004 if (!is_static_defined (sda))
8006 unresolved_reloc = TRUE;
8009 addend -= SYM_VAL (sda);
8012 if (r_type == R_PPC_EMB_SDA21)
8014 bfd_vma insn; /* Fill in register field. */
8016 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8017 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8018 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8023 /* Relocate against the beginning of the section. */
8025 case R_PPC_SECTOFF_LO:
8026 case R_PPC_SECTOFF_HI:
8027 case R_PPC_SECTOFF_HA:
8028 if (sec == NULL || sec->output_section == NULL)
8030 unresolved_reloc = TRUE;
8033 addend -= sec->output_section->vma;
8036 /* Negative relocations. */
8037 case R_PPC_EMB_NADDR32:
8038 case R_PPC_EMB_NADDR16:
8039 case R_PPC_EMB_NADDR16_LO:
8040 case R_PPC_EMB_NADDR16_HI:
8041 case R_PPC_EMB_NADDR16_HA:
8042 addend -= 2 * relocation;
8046 case R_PPC_GLOB_DAT:
8047 case R_PPC_JMP_SLOT:
8048 case R_PPC_RELATIVE:
8049 case R_PPC_IRELATIVE:
8051 case R_PPC_PLTREL32:
8052 case R_PPC_PLT16_LO:
8053 case R_PPC_PLT16_HI:
8054 case R_PPC_PLT16_HA:
8056 case R_PPC_EMB_RELSEC16:
8057 case R_PPC_EMB_RELST_LO:
8058 case R_PPC_EMB_RELST_HI:
8059 case R_PPC_EMB_RELST_HA:
8060 case R_PPC_EMB_BIT_FLD:
8061 (*_bfd_error_handler)
8062 (_("%B: relocation %s is not yet supported for symbol %s."),
8067 bfd_set_error (bfd_error_invalid_operation);
8072 /* Do any further special processing. */
8078 case R_PPC_ADDR16_HA:
8079 case R_PPC_REL16_HA:
8080 case R_PPC_SECTOFF_HA:
8081 case R_PPC_TPREL16_HA:
8082 case R_PPC_DTPREL16_HA:
8083 case R_PPC_EMB_NADDR16_HA:
8084 case R_PPC_EMB_RELST_HA:
8085 /* It's just possible that this symbol is a weak symbol
8086 that's not actually defined anywhere. In that case,
8087 'sec' would be NULL, and we should leave the symbol
8088 alone (it will be set to zero elsewhere in the link). */
8093 case R_PPC_PLT16_HA:
8094 case R_PPC_GOT16_HA:
8095 case R_PPC_GOT_TLSGD16_HA:
8096 case R_PPC_GOT_TLSLD16_HA:
8097 case R_PPC_GOT_TPREL16_HA:
8098 case R_PPC_GOT_DTPREL16_HA:
8099 /* Add 0x10000 if sign bit in 0:15 is set.
8100 Bits 0:15 are not used. */
8106 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8107 "offset = %ld, addend = %ld\n",
8112 (long) rel->r_offset,
8116 if (unresolved_reloc
8117 && !((input_section->flags & SEC_DEBUGGING) != 0
8120 (*_bfd_error_handler)
8121 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
8124 (long) rel->r_offset,
8130 r = _bfd_final_link_relocate (howto,
8138 if (r != bfd_reloc_ok)
8140 if (r == bfd_reloc_overflow)
8145 && h->root.type == bfd_link_hash_undefweak
8146 && howto->pc_relative)
8148 /* Assume this is a call protected by other code that
8149 detect the symbol is undefined. If this is the case,
8150 we can safely ignore the overflow. If not, the
8151 program is hosed anyway, and a little warning isn't
8157 if (! (*info->callbacks->reloc_overflow) (info,
8158 (h ? &h->root : NULL),
8169 (*_bfd_error_handler)
8170 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
8171 input_bfd, input_section,
8172 (long) rel->r_offset, howto->name, sym_name, (int) r);
8179 fprintf (stderr, "\n");
8185 /* Finish up dynamic symbol handling. We set the contents of various
8186 dynamic sections here. */
8189 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
8190 struct bfd_link_info *info,
8191 struct elf_link_hash_entry *h,
8192 Elf_Internal_Sym *sym)
8194 struct ppc_elf_link_hash_table *htab;
8195 struct plt_entry *ent;
8196 bfd_boolean doneone;
8199 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
8200 h->root.root.string);
8203 htab = ppc_elf_hash_table (info);
8204 BFD_ASSERT (htab->elf.dynobj != NULL);
8207 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8208 if (ent->plt.offset != (bfd_vma) -1)
8212 Elf_Internal_Rela rela;
8214 bfd_vma reloc_index;
8216 if (htab->plt_type == PLT_NEW
8217 || !htab->elf.dynamic_sections_created
8218 || h->dynindx == -1)
8219 reloc_index = ent->plt.offset / 4;
8222 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
8223 / htab->plt_slot_size);
8224 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
8225 && htab->plt_type == PLT_OLD)
8226 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
8229 /* This symbol has an entry in the procedure linkage table.
8231 if (htab->plt_type == PLT_VXWORKS
8232 && htab->elf.dynamic_sections_created
8233 && h->dynindx != -1)
8236 const bfd_vma *plt_entry;
8238 /* The first three entries in .got.plt are reserved. */
8239 got_offset = (reloc_index + 3) * 4;
8241 /* Use the right PLT. */
8242 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8243 : ppc_elf_vxworks_plt_entry;
8245 /* Fill in the .plt on VxWorks. */
8248 bfd_put_32 (output_bfd,
8249 plt_entry[0] | PPC_HA (got_offset),
8250 htab->plt->contents + ent->plt.offset + 0);
8251 bfd_put_32 (output_bfd,
8252 plt_entry[1] | PPC_LO (got_offset),
8253 htab->plt->contents + ent->plt.offset + 4);
8257 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
8259 bfd_put_32 (output_bfd,
8260 plt_entry[0] | PPC_HA (got_loc),
8261 htab->plt->contents + ent->plt.offset + 0);
8262 bfd_put_32 (output_bfd,
8263 plt_entry[1] | PPC_LO (got_loc),
8264 htab->plt->contents + ent->plt.offset + 4);
8267 bfd_put_32 (output_bfd, plt_entry[2],
8268 htab->plt->contents + ent->plt.offset + 8);
8269 bfd_put_32 (output_bfd, plt_entry[3],
8270 htab->plt->contents + ent->plt.offset + 12);
8272 /* This instruction is an immediate load. The value loaded is
8273 the byte offset of the R_PPC_JMP_SLOT relocation from the
8274 start of the .rela.plt section. The value is stored in the
8275 low-order 16 bits of the load instruction. */
8276 /* NOTE: It appears that this is now an index rather than a
8277 prescaled offset. */
8278 bfd_put_32 (output_bfd,
8279 plt_entry[4] | reloc_index,
8280 htab->plt->contents + ent->plt.offset + 16);
8281 /* This instruction is a PC-relative branch whose target is
8282 the start of the PLT section. The address of this branch
8283 instruction is 20 bytes beyond the start of this PLT entry.
8284 The address is encoded in bits 6-29, inclusive. The value
8285 stored is right-shifted by two bits, permitting a 26-bit
8287 bfd_put_32 (output_bfd,
8289 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8290 htab->plt->contents + ent->plt.offset + 20);
8291 bfd_put_32 (output_bfd, plt_entry[6],
8292 htab->plt->contents + ent->plt.offset + 24);
8293 bfd_put_32 (output_bfd, plt_entry[7],
8294 htab->plt->contents + ent->plt.offset + 28);
8296 /* Fill in the GOT entry corresponding to this PLT slot with
8297 the address immediately after the the "bctr" instruction
8298 in this PLT entry. */
8299 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8300 + htab->plt->output_offset
8301 + ent->plt.offset + 16),
8302 htab->sgotplt->contents + got_offset);
8306 /* Fill in a couple of entries in .rela.plt.unloaded. */
8307 loc = htab->srelplt2->contents
8308 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8309 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8310 * sizeof (Elf32_External_Rela));
8312 /* Provide the @ha relocation for the first instruction. */
8313 rela.r_offset = (htab->plt->output_section->vma
8314 + htab->plt->output_offset
8315 + ent->plt.offset + 2);
8316 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8318 rela.r_addend = got_offset;
8319 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8320 loc += sizeof (Elf32_External_Rela);
8322 /* Provide the @l relocation for the second instruction. */
8323 rela.r_offset = (htab->plt->output_section->vma
8324 + htab->plt->output_offset
8325 + ent->plt.offset + 6);
8326 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8328 rela.r_addend = got_offset;
8329 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8330 loc += sizeof (Elf32_External_Rela);
8332 /* Provide a relocation for the GOT entry corresponding to this
8333 PLT slot. Point it at the middle of the .plt entry. */
8334 rela.r_offset = (htab->sgotplt->output_section->vma
8335 + htab->sgotplt->output_offset
8337 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
8339 rela.r_addend = ent->plt.offset + 16;
8340 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8343 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8344 In particular, the offset for the relocation is not the
8345 address of the PLT entry for this function, as specified
8346 by the ABI. Instead, the offset is set to the address of
8347 the GOT slot for this function. See EABI 4.4.4.1. */
8348 rela.r_offset = (htab->sgotplt->output_section->vma
8349 + htab->sgotplt->output_offset
8355 asection *splt = htab->plt;
8356 if (!htab->elf.dynamic_sections_created
8357 || h->dynindx == -1)
8360 rela.r_offset = (splt->output_section->vma
8361 + splt->output_offset
8363 if (htab->plt_type == PLT_OLD
8364 || !htab->elf.dynamic_sections_created
8365 || h->dynindx == -1)
8367 /* We don't need to fill in the .plt. The ppc dynamic
8368 linker will fill it in. */
8372 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8373 + htab->glink->output_section->vma
8374 + htab->glink->output_offset);
8375 bfd_put_32 (output_bfd, val,
8376 splt->contents + ent->plt.offset);
8380 /* Fill in the entry in the .rela.plt section. */
8382 if (!htab->elf.dynamic_sections_created
8383 || h->dynindx == -1)
8385 BFD_ASSERT (h->type == STT_GNU_IFUNC
8387 && (h->root.type == bfd_link_hash_defined
8388 || h->root.type == bfd_link_hash_defweak));
8389 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8390 rela.r_addend = SYM_VAL (h);
8393 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
8395 if (!htab->elf.dynamic_sections_created
8396 || h->dynindx == -1)
8397 loc = (htab->reliplt->contents
8398 + (htab->reliplt->reloc_count++
8399 * sizeof (Elf32_External_Rela)));
8401 loc = (htab->relplt->contents
8402 + reloc_index * sizeof (Elf32_External_Rela));
8403 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8405 if (!h->def_regular)
8407 /* Mark the symbol as undefined, rather than as
8408 defined in the .plt section. Leave the value if
8409 there were any relocations where pointer equality
8410 matters (this is a clue for the dynamic linker, to
8411 make function pointer comparisons work between an
8412 application and shared library), otherwise set it
8414 sym->st_shndx = SHN_UNDEF;
8415 if (!h->pointer_equality_needed)
8417 else if (!h->ref_regular_nonweak)
8419 /* This breaks function pointer comparisons, but
8420 that is better than breaking tests for a NULL
8421 function pointer. */
8425 else if (h->type == STT_GNU_IFUNC
8428 /* Set the value of ifunc symbols in a non-pie
8429 executable to the glink entry. This is to avoid
8430 text relocations. We can't do this for ifunc in
8431 allocate_dynrelocs, as we do for normal dynamic
8432 function symbols with plt entries, because we need
8433 to keep the original value around for the ifunc
8435 sym->st_shndx = (_bfd_elf_section_from_bfd_section
8436 (output_bfd, htab->glink->output_section));
8437 sym->st_value = (ent->glink_offset
8438 + htab->glink->output_offset
8439 + htab->glink->output_section->vma);
8444 if (htab->plt_type == PLT_NEW
8445 || !htab->elf.dynamic_sections_created
8446 || h->dynindx == -1)
8449 asection *splt = htab->plt;
8450 if (!htab->elf.dynamic_sections_created
8451 || h->dynindx == -1)
8454 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
8456 if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
8458 bfd_put_32 (output_bfd, LWZ_11_3, p);
8460 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
8462 bfd_put_32 (output_bfd, MR_0_3, p);
8464 bfd_put_32 (output_bfd, CMPWI_11_0, p);
8466 bfd_put_32 (output_bfd, ADD_3_12_2, p);
8468 bfd_put_32 (output_bfd, BEQLR, p);
8470 bfd_put_32 (output_bfd, MR_3_0, p);
8472 bfd_put_32 (output_bfd, NOP, p);
8476 write_glink_stub (ent, splt, p, info);
8479 /* We only need one non-PIC glink stub. */
8489 Elf_Internal_Rela rela;
8492 /* This symbols needs a copy reloc. Set it up. */
8495 fprintf (stderr, ", copy");
8498 BFD_ASSERT (h->dynindx != -1);
8500 if (ppc_elf_hash_entry (h)->has_sda_refs)
8504 BFD_ASSERT (s != NULL);
8506 rela.r_offset = SYM_VAL (h);
8507 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8509 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8510 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8514 fprintf (stderr, "\n");
8517 /* Mark some specially defined symbols as absolute. */
8518 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8519 || (!htab->is_vxworks
8520 && (h == htab->elf.hgot
8521 || strcmp (h->root.root.string,
8522 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
8523 sym->st_shndx = SHN_ABS;
8528 static enum elf_reloc_type_class
8529 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8531 switch (ELF32_R_TYPE (rela->r_info))
8533 case R_PPC_RELATIVE:
8534 return reloc_class_relative;
8537 case R_PPC_JMP_SLOT:
8538 return reloc_class_plt;
8540 return reloc_class_copy;
8542 return reloc_class_normal;
8546 /* Finish up the dynamic sections. */
8549 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8550 struct bfd_link_info *info)
8554 struct ppc_elf_link_hash_table *htab;
8557 bfd_boolean ret = TRUE;
8560 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8563 htab = ppc_elf_hash_table (info);
8564 dynobj = elf_hash_table (info)->dynobj;
8565 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8566 if (htab->is_vxworks)
8567 splt = bfd_get_section_by_name (dynobj, ".plt");
8572 if (htab->elf.hgot != NULL)
8573 got = SYM_VAL (htab->elf.hgot);
8575 if (htab->elf.dynamic_sections_created)
8577 Elf32_External_Dyn *dyncon, *dynconend;
8579 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
8581 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8582 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8583 for (; dyncon < dynconend; dyncon++)
8585 Elf_Internal_Dyn dyn;
8588 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
8593 if (htab->is_vxworks)
8597 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8601 dyn.d_un.d_val = htab->relplt->size;
8606 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8610 dyn.d_un.d_ptr = got;
8614 if (htab->is_vxworks)
8617 dyn.d_un.d_ptr -= htab->relplt->size;
8623 if (htab->is_vxworks
8624 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8629 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8633 if (htab->got != NULL)
8635 if (htab->elf.hgot->root.u.def.section == htab->got
8636 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
8638 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
8640 p += htab->elf.hgot->root.u.def.value;
8641 if (htab->plt_type == PLT_OLD)
8643 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8644 so that a function can easily find the address of
8645 _GLOBAL_OFFSET_TABLE_. */
8646 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8647 < htab->elf.hgot->root.u.def.section->size);
8648 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8653 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8654 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8655 < htab->elf.hgot->root.u.def.section->size);
8656 bfd_put_32 (output_bfd, val, p);
8661 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
8662 htab->elf.hgot->root.root.string,
8663 (htab->sgotplt != NULL
8664 ? htab->sgotplt->name : htab->got->name));
8665 bfd_set_error (bfd_error_bad_value);
8669 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8672 /* Fill in the first entry in the VxWorks procedure linkage table. */
8673 if (splt && splt->size > 0)
8675 /* Use the right PLT. */
8676 const bfd_vma *plt_entry = (info->shared
8677 ? ppc_elf_vxworks_pic_plt0_entry
8678 : ppc_elf_vxworks_plt0_entry);
8682 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
8684 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
8685 splt->contents + 0);
8686 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
8687 splt->contents + 4);
8691 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8692 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8694 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8695 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8696 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8697 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8698 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8699 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8703 Elf_Internal_Rela rela;
8706 loc = htab->srelplt2->contents;
8708 /* Output the @ha relocation for the first instruction. */
8709 rela.r_offset = (htab->plt->output_section->vma
8710 + htab->plt->output_offset
8712 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8714 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8715 loc += sizeof (Elf32_External_Rela);
8717 /* Output the @l relocation for the second instruction. */
8718 rela.r_offset = (htab->plt->output_section->vma
8719 + htab->plt->output_offset
8721 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8723 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8724 loc += sizeof (Elf32_External_Rela);
8726 /* Fix up the remaining relocations. They may have the wrong
8727 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8728 in which symbols were output. */
8729 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8731 Elf_Internal_Rela rel;
8733 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8734 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8735 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8736 loc += sizeof (Elf32_External_Rela);
8738 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8739 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8740 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8741 loc += sizeof (Elf32_External_Rela);
8743 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8744 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
8745 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8746 loc += sizeof (Elf32_External_Rela);
8751 if (htab->glink != NULL
8752 && htab->glink->contents != NULL
8753 && htab->elf.dynamic_sections_created)
8756 unsigned char *endp;
8761 * PIC glink code is the following:
8763 * # ith PLT code stub.
8764 * addis 11,30,(plt+(i-1)*4-got)@ha
8765 * lwz 11,(plt+(i-1)*4-got)@l(11)
8769 * # A table of branches, one for each plt entry.
8770 * # The idea is that the plt call stub loads ctr and r11 with these
8771 * # addresses, so (r11 - res_0) gives the plt index * 4.
8772 * res_0: b PLTresolve
8773 * res_1: b PLTresolve
8775 * # Some number of entries towards the end can be nops
8781 * addis 11,11,(1f-res_0)@ha
8784 * 1: addi 11,11,(1b-res_0)@l
8787 * sub 11,11,12 # r11 = index * 4
8788 * addis 12,12,(got+4-1b)@ha
8789 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8790 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8793 * add 11,0,11 # r11 = index * 12 = reloc offset.
8796 static const unsigned int pic_plt_resolve[] =
8817 * Non-PIC glink code is a little simpler.
8819 * # ith PLT code stub.
8820 * lis 11,(plt+(i-1)*4)@ha
8821 * lwz 11,(plt+(i-1)*4)@l(11)
8825 * The branch table is the same, then comes
8829 * addis 11,11,(-res_0)@ha
8830 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8831 * addi 11,11,(-res_0)@l # r11 = index * 4
8834 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8835 * add 11,0,11 # r11 = index * 12 = reloc offset.
8838 static const unsigned int plt_resolve[] =
8858 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8860 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
8863 /* Build the branch table, one for each plt entry (less one),
8864 and perhaps some padding. */
8865 p = htab->glink->contents;
8866 p += htab->glink_pltresolve;
8867 endp = htab->glink->contents;
8868 endp += htab->glink->size - GLINK_PLTRESOLVE;
8869 while (p < endp - 8 * 4)
8871 bfd_put_32 (output_bfd, B + endp - p, p);
8876 bfd_put_32 (output_bfd, NOP, p);
8880 res0 = (htab->glink_pltresolve
8881 + htab->glink->output_section->vma
8882 + htab->glink->output_offset);
8884 /* Last comes the PLTresolve stub. */
8889 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8891 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8894 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8896 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8897 + htab->glink->output_section->vma
8898 + htab->glink->output_offset);
8900 bfd_put_32 (output_bfd,
8901 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8902 bfd_put_32 (output_bfd,
8903 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8904 bfd_put_32 (output_bfd,
8905 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8906 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8908 bfd_put_32 (output_bfd,
8909 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8910 bfd_put_32 (output_bfd,
8911 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8915 bfd_put_32 (output_bfd,
8916 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8917 bfd_put_32 (output_bfd,
8918 LWZ_12_12 + 4, p + 9*4);
8923 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8925 bfd_put_32 (output_bfd, plt_resolve[i], p);
8928 p -= 4 * ARRAY_SIZE (plt_resolve);
8930 bfd_put_32 (output_bfd,
8931 LIS_12 + PPC_HA (got + 4), p + 0*4);
8932 bfd_put_32 (output_bfd,
8933 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8934 bfd_put_32 (output_bfd,
8935 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8936 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8938 bfd_put_32 (output_bfd,
8939 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8940 bfd_put_32 (output_bfd,
8941 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8945 bfd_put_32 (output_bfd,
8946 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8947 bfd_put_32 (output_bfd,
8948 LWZ_12_12 + 4, p + 6*4);
8956 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8957 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8958 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8959 #define TARGET_BIG_NAME "elf32-powerpc"
8960 #define ELF_ARCH bfd_arch_powerpc
8961 #define ELF_TARGET_ID PPC32_ELF_DATA
8962 #define ELF_MACHINE_CODE EM_PPC
8963 #ifdef __QNXTARGET__
8964 #define ELF_MAXPAGESIZE 0x1000
8966 #define ELF_MAXPAGESIZE 0x10000
8968 #define ELF_MINPAGESIZE 0x1000
8969 #define ELF_COMMONPAGESIZE 0x1000
8970 #define elf_info_to_howto ppc_elf_info_to_howto
8972 #ifdef EM_CYGNUS_POWERPC
8973 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8977 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8980 #define elf_backend_plt_not_loaded 1
8981 #define elf_backend_can_gc_sections 1
8982 #define elf_backend_can_refcount 1
8983 #define elf_backend_rela_normal 1
8985 #define bfd_elf32_mkobject ppc_elf_mkobject
8986 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8987 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8988 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8989 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8990 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8991 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8992 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8994 #define elf_backend_object_p ppc_elf_object_p
8995 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8996 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8997 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8998 #define elf_backend_relocate_section ppc_elf_relocate_section
8999 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
9000 #define elf_backend_check_relocs ppc_elf_check_relocs
9001 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
9002 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
9003 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
9004 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
9005 #define elf_backend_hash_symbol ppc_elf_hash_symbol
9006 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
9007 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
9008 #define elf_backend_fake_sections ppc_elf_fake_sections
9009 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
9010 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
9011 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
9012 #define elf_backend_write_core_note ppc_elf_write_core_note
9013 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
9014 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
9015 #define elf_backend_final_write_processing ppc_elf_final_write_processing
9016 #define elf_backend_write_section ppc_elf_write_section
9017 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
9018 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
9019 #define elf_backend_action_discarded ppc_elf_action_discarded
9020 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
9021 #define elf_backend_post_process_headers _bfd_elf_set_osabi
9023 #include "elf32-target.h"
9025 /* VxWorks Target */
9027 #undef TARGET_LITTLE_SYM
9028 #undef TARGET_LITTLE_NAME
9030 #undef TARGET_BIG_SYM
9031 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
9032 #undef TARGET_BIG_NAME
9033 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
9035 /* VxWorks uses the elf default section flags for .plt. */
9036 static const struct bfd_elf_special_section *
9037 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9039 if (sec->name == NULL)
9042 if (strcmp (sec->name, ".plt") == 0)
9043 return _bfd_elf_get_sec_type_attr (abfd, sec);
9045 return ppc_elf_get_sec_type_attr (abfd, sec);
9048 /* Like ppc_elf_link_hash_table_create, but overrides
9049 appropriately for VxWorks. */
9050 static struct bfd_link_hash_table *
9051 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
9053 struct bfd_link_hash_table *ret;
9055 ret = ppc_elf_link_hash_table_create (abfd);
9058 struct ppc_elf_link_hash_table *htab
9059 = (struct ppc_elf_link_hash_table *)ret;
9060 htab->is_vxworks = 1;
9061 htab->plt_type = PLT_VXWORKS;
9062 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
9063 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
9064 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
9069 /* Tweak magic VxWorks symbols as they are loaded. */
9071 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
9072 struct bfd_link_info *info,
9073 Elf_Internal_Sym *sym,
9074 const char **namep ATTRIBUTE_UNUSED,
9075 flagword *flagsp ATTRIBUTE_UNUSED,
9079 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
9083 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
9087 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
9089 ppc_elf_final_write_processing(abfd, linker);
9090 elf_vxworks_final_write_processing(abfd, linker);
9093 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
9095 #undef elf_backend_want_plt_sym
9096 #define elf_backend_want_plt_sym 1
9097 #undef elf_backend_want_got_plt
9098 #define elf_backend_want_got_plt 1
9099 #undef elf_backend_got_symbol_offset
9100 #define elf_backend_got_symbol_offset 0
9101 #undef elf_backend_plt_not_loaded
9102 #define elf_backend_plt_not_loaded 0
9103 #undef elf_backend_plt_readonly
9104 #define elf_backend_plt_readonly 1
9105 #undef elf_backend_got_header_size
9106 #define elf_backend_got_header_size 12
9108 #undef bfd_elf32_get_synthetic_symtab
9110 #undef bfd_elf32_bfd_link_hash_table_create
9111 #define bfd_elf32_bfd_link_hash_table_create \
9112 ppc_elf_vxworks_link_hash_table_create
9113 #undef elf_backend_add_symbol_hook
9114 #define elf_backend_add_symbol_hook \
9115 ppc_elf_vxworks_add_symbol_hook
9116 #undef elf_backend_link_output_symbol_hook
9117 #define elf_backend_link_output_symbol_hook \
9118 elf_vxworks_link_output_symbol_hook
9119 #undef elf_backend_final_write_processing
9120 #define elf_backend_final_write_processing \
9121 ppc_elf_vxworks_final_write_processing
9122 #undef elf_backend_get_sec_type_attr
9123 #define elf_backend_get_sec_type_attr \
9124 ppc_elf_vxworks_get_sec_type_attr
9125 #undef elf_backend_emit_relocs
9126 #define elf_backend_emit_relocs \
9127 elf_vxworks_emit_relocs
9130 #define elf32_bed ppc_elf_vxworks_bed
9131 #undef elf_backend_post_process_headers
9133 #include "elf32-target.h"
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