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, 2011
4 Free Software Foundation, Inc.
5 Written by Ian Lance Taylor, Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the
21 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
22 Boston, MA 02110-1301, USA. */
25 /* This file is based on a preliminary PowerPC ELF ABI. The
26 information may not match the final PowerPC ELF ABI. It includes
27 suggestions from the in-progress Embedded PowerPC ABI, and that
28 information may also not match. */
37 #include "elf32-ppc.h"
38 #include "elf-vxworks.h"
41 /* RELA relocations are used here. */
43 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45 static bfd_reloc_status_type ppc_elf_unhandled_reloc
46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 /* Branch prediction bit for branch taken relocs. */
49 #define BRANCH_PREDICT_BIT 0x200000
50 /* Mask to set RA in memory instructions. */
51 #define RA_REGISTER_MASK 0x001f0000
52 /* Value to shift register by to insert RA. */
53 #define RA_REGISTER_SHIFT 16
55 /* The name of the dynamic interpreter. This is put in the .interp
57 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
59 /* For old-style PLT. */
60 /* The number of single-slot PLT entries (the rest use two slots). */
61 #define PLT_NUM_SINGLE_ENTRIES 8192
63 /* For new-style .glink and .plt. */
64 #define GLINK_PLTRESOLVE 16*4
65 #define GLINK_ENTRY_SIZE 4*4
66 #define TLS_GET_ADDR_GLINK_SIZE 12*4
68 /* VxWorks uses its own plt layout, filled in by the static linker. */
70 /* The standard VxWorks PLT entry. */
71 #define VXWORKS_PLT_ENTRY_SIZE 32
72 static const bfd_vma ppc_elf_vxworks_plt_entry
73 [VXWORKS_PLT_ENTRY_SIZE / 4] =
75 0x3d800000, /* lis r12,0 */
76 0x818c0000, /* lwz r12,0(r12) */
77 0x7d8903a6, /* mtctr r12 */
78 0x4e800420, /* bctr */
79 0x39600000, /* li r11,0 */
80 0x48000000, /* b 14 <.PLT0resolve+0x4> */
84 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
85 [VXWORKS_PLT_ENTRY_SIZE / 4] =
87 0x3d9e0000, /* addis r12,r30,0 */
88 0x818c0000, /* lwz r12,0(r12) */
89 0x7d8903a6, /* mtctr r12 */
90 0x4e800420, /* bctr */
91 0x39600000, /* li r11,0 */
92 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
97 /* The initial VxWorks PLT entry. */
98 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
99 static const bfd_vma ppc_elf_vxworks_plt0_entry
100 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
102 0x3d800000, /* lis r12,0 */
103 0x398c0000, /* addi r12,r12,0 */
104 0x800c0008, /* lwz r0,8(r12) */
105 0x7c0903a6, /* mtctr r0 */
106 0x818c0004, /* lwz r12,4(r12) */
107 0x4e800420, /* bctr */
108 0x60000000, /* nop */
109 0x60000000, /* nop */
111 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
112 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
114 0x819e0008, /* lwz r12,8(r30) */
115 0x7d8903a6, /* mtctr r12 */
116 0x819e0004, /* lwz r12,4(r30) */
117 0x4e800420, /* bctr */
118 0x60000000, /* nop */
119 0x60000000, /* nop */
120 0x60000000, /* nop */
121 0x60000000, /* nop */
124 /* For executables, we have some additional relocations in
125 .rela.plt.unloaded, for the kernel loader. */
127 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
128 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
129 /* The number of relocations in the PLTResolve slot. */
130 #define VXWORKS_PLTRESOLVE_RELOCS 2
131 /* The number of relocations in the PLTResolve slot when when creating
133 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
135 /* Some instructions. */
136 #define ADDIS_11_11 0x3d6b0000
137 #define ADDIS_11_30 0x3d7e0000
138 #define ADDIS_12_12 0x3d8c0000
139 #define ADDI_11_11 0x396b0000
140 #define ADD_0_11_11 0x7c0b5a14
141 #define ADD_3_12_2 0x7c6c1214
142 #define ADD_11_0_11 0x7d605a14
144 #define BCL_20_31 0x429f0005
145 #define BCTR 0x4e800420
146 #define BEQLR 0x4d820020
147 #define CMPWI_11_0 0x2c0b0000
148 #define LIS_11 0x3d600000
149 #define LIS_12 0x3d800000
150 #define LWZU_0_12 0x840c0000
151 #define LWZ_0_12 0x800c0000
152 #define LWZ_11_3 0x81630000
153 #define LWZ_11_11 0x816b0000
154 #define LWZ_11_30 0x817e0000
155 #define LWZ_12_3 0x81830000
156 #define LWZ_12_12 0x818c0000
157 #define MR_0_3 0x7c601b78
158 #define MR_3_0 0x7c030378
159 #define MFLR_0 0x7c0802a6
160 #define MFLR_12 0x7d8802a6
161 #define MTCTR_0 0x7c0903a6
162 #define MTCTR_11 0x7d6903a6
163 #define MTLR_0 0x7c0803a6
164 #define NOP 0x60000000
165 #define SUB_11_11_12 0x7d6c5850
167 /* Offset of tp and dtp pointers from start of TLS block. */
168 #define TP_OFFSET 0x7000
169 #define DTP_OFFSET 0x8000
171 /* The value of a defined global symbol. */
172 #define SYM_VAL(SYM) \
173 ((SYM)->root.u.def.section->output_section->vma \
174 + (SYM)->root.u.def.section->output_offset \
175 + (SYM)->root.u.def.value)
177 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
179 static reloc_howto_type ppc_elf_howto_raw[] = {
180 /* This reloc does nothing. */
181 HOWTO (R_PPC_NONE, /* type */
183 2, /* size (0 = byte, 1 = short, 2 = long) */
185 FALSE, /* pc_relative */
187 complain_overflow_bitfield, /* complain_on_overflow */
188 bfd_elf_generic_reloc, /* special_function */
189 "R_PPC_NONE", /* name */
190 FALSE, /* partial_inplace */
193 FALSE), /* pcrel_offset */
195 /* A standard 32 bit relocation. */
196 HOWTO (R_PPC_ADDR32, /* type */
198 2, /* size (0 = byte, 1 = short, 2 = long) */
200 FALSE, /* pc_relative */
202 complain_overflow_bitfield, /* complain_on_overflow */
203 bfd_elf_generic_reloc, /* special_function */
204 "R_PPC_ADDR32", /* name */
205 FALSE, /* partial_inplace */
207 0xffffffff, /* dst_mask */
208 FALSE), /* pcrel_offset */
210 /* An absolute 26 bit branch; the lower two bits must be zero.
211 FIXME: we don't check that, we just clear them. */
212 HOWTO (R_PPC_ADDR24, /* type */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
216 FALSE, /* pc_relative */
218 complain_overflow_bitfield, /* complain_on_overflow */
219 bfd_elf_generic_reloc, /* special_function */
220 "R_PPC_ADDR24", /* name */
221 FALSE, /* partial_inplace */
223 0x3fffffc, /* dst_mask */
224 FALSE), /* pcrel_offset */
226 /* A standard 16 bit relocation. */
227 HOWTO (R_PPC_ADDR16, /* type */
229 1, /* size (0 = byte, 1 = short, 2 = long) */
231 FALSE, /* pc_relative */
233 complain_overflow_bitfield, /* complain_on_overflow */
234 bfd_elf_generic_reloc, /* special_function */
235 "R_PPC_ADDR16", /* name */
236 FALSE, /* partial_inplace */
238 0xffff, /* dst_mask */
239 FALSE), /* pcrel_offset */
241 /* A 16 bit relocation without overflow. */
242 HOWTO (R_PPC_ADDR16_LO, /* type */
244 1, /* size (0 = byte, 1 = short, 2 = long) */
246 FALSE, /* pc_relative */
248 complain_overflow_dont,/* complain_on_overflow */
249 bfd_elf_generic_reloc, /* special_function */
250 "R_PPC_ADDR16_LO", /* name */
251 FALSE, /* partial_inplace */
253 0xffff, /* dst_mask */
254 FALSE), /* pcrel_offset */
256 /* The high order 16 bits of an address. */
257 HOWTO (R_PPC_ADDR16_HI, /* type */
259 1, /* size (0 = byte, 1 = short, 2 = long) */
261 FALSE, /* pc_relative */
263 complain_overflow_dont, /* complain_on_overflow */
264 bfd_elf_generic_reloc, /* special_function */
265 "R_PPC_ADDR16_HI", /* name */
266 FALSE, /* partial_inplace */
268 0xffff, /* dst_mask */
269 FALSE), /* pcrel_offset */
271 /* The high order 16 bits of an address, plus 1 if the contents of
272 the low 16 bits, treated as a signed number, is negative. */
273 HOWTO (R_PPC_ADDR16_HA, /* type */
275 1, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE, /* pc_relative */
279 complain_overflow_dont, /* complain_on_overflow */
280 ppc_elf_addr16_ha_reloc, /* special_function */
281 "R_PPC_ADDR16_HA", /* name */
282 FALSE, /* partial_inplace */
284 0xffff, /* dst_mask */
285 FALSE), /* pcrel_offset */
287 /* An absolute 16 bit branch; the lower two bits must be zero.
288 FIXME: we don't check that, we just clear them. */
289 HOWTO (R_PPC_ADDR14, /* type */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
293 FALSE, /* pc_relative */
295 complain_overflow_bitfield, /* complain_on_overflow */
296 bfd_elf_generic_reloc, /* special_function */
297 "R_PPC_ADDR14", /* name */
298 FALSE, /* partial_inplace */
300 0xfffc, /* dst_mask */
301 FALSE), /* pcrel_offset */
303 /* An absolute 16 bit branch, for which bit 10 should be set to
304 indicate that the branch is expected to be taken. The lower two
305 bits must be zero. */
306 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
308 2, /* size (0 = byte, 1 = short, 2 = long) */
310 FALSE, /* pc_relative */
312 complain_overflow_bitfield, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_PPC_ADDR14_BRTAKEN",/* name */
315 FALSE, /* partial_inplace */
317 0xfffc, /* dst_mask */
318 FALSE), /* pcrel_offset */
320 /* An absolute 16 bit branch, for which bit 10 should be set to
321 indicate that the branch is not expected to be taken. The lower
322 two bits must be zero. */
323 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
327 FALSE, /* pc_relative */
329 complain_overflow_bitfield, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_PPC_ADDR14_BRNTAKEN",/* name */
332 FALSE, /* partial_inplace */
334 0xfffc, /* dst_mask */
335 FALSE), /* pcrel_offset */
337 /* A relative 26 bit branch; the lower two bits must be zero. */
338 HOWTO (R_PPC_REL24, /* type */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
342 TRUE, /* pc_relative */
344 complain_overflow_signed, /* complain_on_overflow */
345 bfd_elf_generic_reloc, /* special_function */
346 "R_PPC_REL24", /* name */
347 FALSE, /* partial_inplace */
349 0x3fffffc, /* dst_mask */
350 TRUE), /* pcrel_offset */
352 /* A relative 16 bit branch; the lower two bits must be zero. */
353 HOWTO (R_PPC_REL14, /* type */
355 2, /* size (0 = byte, 1 = short, 2 = long) */
357 TRUE, /* pc_relative */
359 complain_overflow_signed, /* complain_on_overflow */
360 bfd_elf_generic_reloc, /* special_function */
361 "R_PPC_REL14", /* name */
362 FALSE, /* partial_inplace */
364 0xfffc, /* dst_mask */
365 TRUE), /* pcrel_offset */
367 /* A relative 16 bit branch. Bit 10 should be set to indicate that
368 the branch is expected to be taken. The lower two bits must be
370 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
372 2, /* size (0 = byte, 1 = short, 2 = long) */
374 TRUE, /* pc_relative */
376 complain_overflow_signed, /* complain_on_overflow */
377 bfd_elf_generic_reloc, /* special_function */
378 "R_PPC_REL14_BRTAKEN", /* name */
379 FALSE, /* partial_inplace */
381 0xfffc, /* dst_mask */
382 TRUE), /* pcrel_offset */
384 /* A relative 16 bit branch. Bit 10 should be set to indicate that
385 the branch is not expected to be taken. The lower two bits must
387 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 TRUE, /* pc_relative */
393 complain_overflow_signed, /* complain_on_overflow */
394 bfd_elf_generic_reloc, /* special_function */
395 "R_PPC_REL14_BRNTAKEN",/* name */
396 FALSE, /* partial_inplace */
398 0xfffc, /* dst_mask */
399 TRUE), /* pcrel_offset */
401 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
403 HOWTO (R_PPC_GOT16, /* type */
405 1, /* size (0 = byte, 1 = short, 2 = long) */
407 FALSE, /* pc_relative */
409 complain_overflow_signed, /* complain_on_overflow */
410 bfd_elf_generic_reloc, /* special_function */
411 "R_PPC_GOT16", /* name */
412 FALSE, /* partial_inplace */
414 0xffff, /* dst_mask */
415 FALSE), /* pcrel_offset */
417 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
419 HOWTO (R_PPC_GOT16_LO, /* type */
421 1, /* size (0 = byte, 1 = short, 2 = long) */
423 FALSE, /* pc_relative */
425 complain_overflow_dont, /* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
427 "R_PPC_GOT16_LO", /* name */
428 FALSE, /* partial_inplace */
430 0xffff, /* dst_mask */
431 FALSE), /* pcrel_offset */
433 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
435 HOWTO (R_PPC_GOT16_HI, /* type */
437 1, /* size (0 = byte, 1 = short, 2 = long) */
439 FALSE, /* pc_relative */
441 complain_overflow_bitfield, /* complain_on_overflow */
442 bfd_elf_generic_reloc, /* special_function */
443 "R_PPC_GOT16_HI", /* name */
444 FALSE, /* partial_inplace */
446 0xffff, /* dst_mask */
447 FALSE), /* pcrel_offset */
449 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
451 HOWTO (R_PPC_GOT16_HA, /* type */
453 1, /* size (0 = byte, 1 = short, 2 = long) */
455 FALSE, /* pc_relative */
457 complain_overflow_bitfield, /* complain_on_overflow */
458 ppc_elf_addr16_ha_reloc, /* special_function */
459 "R_PPC_GOT16_HA", /* name */
460 FALSE, /* partial_inplace */
462 0xffff, /* dst_mask */
463 FALSE), /* pcrel_offset */
465 /* Like R_PPC_REL24, but referring to the procedure linkage table
466 entry for the symbol. */
467 HOWTO (R_PPC_PLTREL24, /* type */
469 2, /* size (0 = byte, 1 = short, 2 = long) */
471 TRUE, /* pc_relative */
473 complain_overflow_signed, /* complain_on_overflow */
474 bfd_elf_generic_reloc, /* special_function */
475 "R_PPC_PLTREL24", /* name */
476 FALSE, /* partial_inplace */
478 0x3fffffc, /* dst_mask */
479 TRUE), /* pcrel_offset */
481 /* This is used only by the dynamic linker. The symbol should exist
482 both in the object being run and in some shared library. The
483 dynamic linker copies the data addressed by the symbol from the
484 shared library into the object, because the object being
485 run has to have the data at some particular address. */
486 HOWTO (R_PPC_COPY, /* type */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
490 FALSE, /* pc_relative */
492 complain_overflow_bitfield, /* complain_on_overflow */
493 bfd_elf_generic_reloc, /* special_function */
494 "R_PPC_COPY", /* name */
495 FALSE, /* partial_inplace */
498 FALSE), /* pcrel_offset */
500 /* Like R_PPC_ADDR32, but used when setting global offset table
502 HOWTO (R_PPC_GLOB_DAT, /* type */
504 2, /* size (0 = byte, 1 = short, 2 = long) */
506 FALSE, /* pc_relative */
508 complain_overflow_bitfield, /* complain_on_overflow */
509 bfd_elf_generic_reloc, /* special_function */
510 "R_PPC_GLOB_DAT", /* name */
511 FALSE, /* partial_inplace */
513 0xffffffff, /* dst_mask */
514 FALSE), /* pcrel_offset */
516 /* Marks a procedure linkage table entry for a symbol. */
517 HOWTO (R_PPC_JMP_SLOT, /* type */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
521 FALSE, /* pc_relative */
523 complain_overflow_bitfield, /* complain_on_overflow */
524 bfd_elf_generic_reloc, /* special_function */
525 "R_PPC_JMP_SLOT", /* name */
526 FALSE, /* partial_inplace */
529 FALSE), /* pcrel_offset */
531 /* Used only by the dynamic linker. When the object is run, this
532 longword is set to the load address of the object, plus the
534 HOWTO (R_PPC_RELATIVE, /* type */
536 2, /* size (0 = byte, 1 = short, 2 = long) */
538 FALSE, /* pc_relative */
540 complain_overflow_bitfield, /* complain_on_overflow */
541 bfd_elf_generic_reloc, /* special_function */
542 "R_PPC_RELATIVE", /* name */
543 FALSE, /* partial_inplace */
545 0xffffffff, /* dst_mask */
546 FALSE), /* pcrel_offset */
548 /* Like R_PPC_REL24, but uses the value of the symbol within the
549 object rather than the final value. Normally used for
550 _GLOBAL_OFFSET_TABLE_. */
551 HOWTO (R_PPC_LOCAL24PC, /* type */
553 2, /* size (0 = byte, 1 = short, 2 = long) */
555 TRUE, /* pc_relative */
557 complain_overflow_signed, /* complain_on_overflow */
558 bfd_elf_generic_reloc, /* special_function */
559 "R_PPC_LOCAL24PC", /* name */
560 FALSE, /* partial_inplace */
562 0x3fffffc, /* dst_mask */
563 TRUE), /* pcrel_offset */
565 /* Like R_PPC_ADDR32, but may be unaligned. */
566 HOWTO (R_PPC_UADDR32, /* type */
568 2, /* size (0 = byte, 1 = short, 2 = long) */
570 FALSE, /* pc_relative */
572 complain_overflow_bitfield, /* complain_on_overflow */
573 bfd_elf_generic_reloc, /* special_function */
574 "R_PPC_UADDR32", /* name */
575 FALSE, /* partial_inplace */
577 0xffffffff, /* dst_mask */
578 FALSE), /* pcrel_offset */
580 /* Like R_PPC_ADDR16, but may be unaligned. */
581 HOWTO (R_PPC_UADDR16, /* type */
583 1, /* size (0 = byte, 1 = short, 2 = long) */
585 FALSE, /* pc_relative */
587 complain_overflow_bitfield, /* complain_on_overflow */
588 bfd_elf_generic_reloc, /* special_function */
589 "R_PPC_UADDR16", /* name */
590 FALSE, /* partial_inplace */
592 0xffff, /* dst_mask */
593 FALSE), /* pcrel_offset */
595 /* 32-bit PC relative */
596 HOWTO (R_PPC_REL32, /* type */
598 2, /* size (0 = byte, 1 = short, 2 = long) */
600 TRUE, /* pc_relative */
602 complain_overflow_bitfield, /* complain_on_overflow */
603 bfd_elf_generic_reloc, /* special_function */
604 "R_PPC_REL32", /* name */
605 FALSE, /* partial_inplace */
607 0xffffffff, /* dst_mask */
608 TRUE), /* pcrel_offset */
610 /* 32-bit relocation to the symbol's procedure linkage table.
611 FIXME: not supported. */
612 HOWTO (R_PPC_PLT32, /* type */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
616 FALSE, /* pc_relative */
618 complain_overflow_bitfield, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC_PLT32", /* name */
621 FALSE, /* partial_inplace */
624 FALSE), /* pcrel_offset */
626 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
627 FIXME: not supported. */
628 HOWTO (R_PPC_PLTREL32, /* type */
630 2, /* size (0 = byte, 1 = short, 2 = long) */
632 TRUE, /* pc_relative */
634 complain_overflow_bitfield, /* complain_on_overflow */
635 bfd_elf_generic_reloc, /* special_function */
636 "R_PPC_PLTREL32", /* name */
637 FALSE, /* partial_inplace */
640 TRUE), /* pcrel_offset */
642 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
644 HOWTO (R_PPC_PLT16_LO, /* type */
646 1, /* size (0 = byte, 1 = short, 2 = long) */
648 FALSE, /* pc_relative */
650 complain_overflow_dont, /* complain_on_overflow */
651 bfd_elf_generic_reloc, /* special_function */
652 "R_PPC_PLT16_LO", /* name */
653 FALSE, /* partial_inplace */
655 0xffff, /* dst_mask */
656 FALSE), /* pcrel_offset */
658 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
660 HOWTO (R_PPC_PLT16_HI, /* type */
662 1, /* size (0 = byte, 1 = short, 2 = long) */
664 FALSE, /* pc_relative */
666 complain_overflow_bitfield, /* complain_on_overflow */
667 bfd_elf_generic_reloc, /* special_function */
668 "R_PPC_PLT16_HI", /* name */
669 FALSE, /* partial_inplace */
671 0xffff, /* dst_mask */
672 FALSE), /* pcrel_offset */
674 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
676 HOWTO (R_PPC_PLT16_HA, /* type */
678 1, /* size (0 = byte, 1 = short, 2 = long) */
680 FALSE, /* pc_relative */
682 complain_overflow_bitfield, /* complain_on_overflow */
683 ppc_elf_addr16_ha_reloc, /* special_function */
684 "R_PPC_PLT16_HA", /* name */
685 FALSE, /* partial_inplace */
687 0xffff, /* dst_mask */
688 FALSE), /* pcrel_offset */
690 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
692 HOWTO (R_PPC_SDAREL16, /* type */
694 1, /* size (0 = byte, 1 = short, 2 = long) */
696 FALSE, /* pc_relative */
698 complain_overflow_signed, /* complain_on_overflow */
699 bfd_elf_generic_reloc, /* special_function */
700 "R_PPC_SDAREL16", /* name */
701 FALSE, /* partial_inplace */
703 0xffff, /* dst_mask */
704 FALSE), /* pcrel_offset */
706 /* 16-bit section relative relocation. */
707 HOWTO (R_PPC_SECTOFF, /* type */
709 1, /* size (0 = byte, 1 = short, 2 = long) */
711 FALSE, /* pc_relative */
713 complain_overflow_bitfield, /* complain_on_overflow */
714 bfd_elf_generic_reloc, /* special_function */
715 "R_PPC_SECTOFF", /* name */
716 FALSE, /* partial_inplace */
718 0xffff, /* dst_mask */
719 FALSE), /* pcrel_offset */
721 /* 16-bit lower half section relative relocation. */
722 HOWTO (R_PPC_SECTOFF_LO, /* type */
724 1, /* size (0 = byte, 1 = short, 2 = long) */
726 FALSE, /* pc_relative */
728 complain_overflow_dont, /* complain_on_overflow */
729 bfd_elf_generic_reloc, /* special_function */
730 "R_PPC_SECTOFF_LO", /* name */
731 FALSE, /* partial_inplace */
733 0xffff, /* dst_mask */
734 FALSE), /* pcrel_offset */
736 /* 16-bit upper half section relative relocation. */
737 HOWTO (R_PPC_SECTOFF_HI, /* type */
739 1, /* size (0 = byte, 1 = short, 2 = long) */
741 FALSE, /* pc_relative */
743 complain_overflow_bitfield, /* complain_on_overflow */
744 bfd_elf_generic_reloc, /* special_function */
745 "R_PPC_SECTOFF_HI", /* name */
746 FALSE, /* partial_inplace */
748 0xffff, /* dst_mask */
749 FALSE), /* pcrel_offset */
751 /* 16-bit upper half adjusted section relative relocation. */
752 HOWTO (R_PPC_SECTOFF_HA, /* type */
754 1, /* size (0 = byte, 1 = short, 2 = long) */
756 FALSE, /* pc_relative */
758 complain_overflow_bitfield, /* complain_on_overflow */
759 ppc_elf_addr16_ha_reloc, /* special_function */
760 "R_PPC_SECTOFF_HA", /* name */
761 FALSE, /* partial_inplace */
763 0xffff, /* dst_mask */
764 FALSE), /* pcrel_offset */
766 /* Marker relocs for TLS. */
769 2, /* size (0 = byte, 1 = short, 2 = long) */
771 FALSE, /* pc_relative */
773 complain_overflow_dont, /* complain_on_overflow */
774 bfd_elf_generic_reloc, /* special_function */
775 "R_PPC_TLS", /* name */
776 FALSE, /* partial_inplace */
779 FALSE), /* pcrel_offset */
783 2, /* size (0 = byte, 1 = short, 2 = long) */
785 FALSE, /* pc_relative */
787 complain_overflow_dont, /* complain_on_overflow */
788 bfd_elf_generic_reloc, /* special_function */
789 "R_PPC_TLSGD", /* name */
790 FALSE, /* partial_inplace */
793 FALSE), /* pcrel_offset */
797 2, /* size (0 = byte, 1 = short, 2 = long) */
799 FALSE, /* pc_relative */
801 complain_overflow_dont, /* complain_on_overflow */
802 bfd_elf_generic_reloc, /* special_function */
803 "R_PPC_TLSLD", /* name */
804 FALSE, /* partial_inplace */
807 FALSE), /* pcrel_offset */
809 /* Computes the load module index of the load module that contains the
810 definition of its TLS sym. */
811 HOWTO (R_PPC_DTPMOD32,
813 2, /* size (0 = byte, 1 = short, 2 = long) */
815 FALSE, /* pc_relative */
817 complain_overflow_dont, /* complain_on_overflow */
818 ppc_elf_unhandled_reloc, /* special_function */
819 "R_PPC_DTPMOD32", /* name */
820 FALSE, /* partial_inplace */
822 0xffffffff, /* dst_mask */
823 FALSE), /* pcrel_offset */
825 /* Computes a dtv-relative displacement, the difference between the value
826 of sym+add and the base address of the thread-local storage block that
827 contains the definition of sym, minus 0x8000. */
828 HOWTO (R_PPC_DTPREL32,
830 2, /* size (0 = byte, 1 = short, 2 = long) */
832 FALSE, /* pc_relative */
834 complain_overflow_dont, /* complain_on_overflow */
835 ppc_elf_unhandled_reloc, /* special_function */
836 "R_PPC_DTPREL32", /* name */
837 FALSE, /* partial_inplace */
839 0xffffffff, /* dst_mask */
840 FALSE), /* pcrel_offset */
842 /* A 16 bit dtprel reloc. */
843 HOWTO (R_PPC_DTPREL16,
845 1, /* size (0 = byte, 1 = short, 2 = long) */
847 FALSE, /* pc_relative */
849 complain_overflow_signed, /* complain_on_overflow */
850 ppc_elf_unhandled_reloc, /* special_function */
851 "R_PPC_DTPREL16", /* name */
852 FALSE, /* partial_inplace */
854 0xffff, /* dst_mask */
855 FALSE), /* pcrel_offset */
857 /* Like DTPREL16, but no overflow. */
858 HOWTO (R_PPC_DTPREL16_LO,
860 1, /* size (0 = byte, 1 = short, 2 = long) */
862 FALSE, /* pc_relative */
864 complain_overflow_dont, /* complain_on_overflow */
865 ppc_elf_unhandled_reloc, /* special_function */
866 "R_PPC_DTPREL16_LO", /* name */
867 FALSE, /* partial_inplace */
869 0xffff, /* dst_mask */
870 FALSE), /* pcrel_offset */
872 /* Like DTPREL16_LO, but next higher group of 16 bits. */
873 HOWTO (R_PPC_DTPREL16_HI,
875 1, /* size (0 = byte, 1 = short, 2 = long) */
877 FALSE, /* pc_relative */
879 complain_overflow_dont, /* complain_on_overflow */
880 ppc_elf_unhandled_reloc, /* special_function */
881 "R_PPC_DTPREL16_HI", /* name */
882 FALSE, /* partial_inplace */
884 0xffff, /* dst_mask */
885 FALSE), /* pcrel_offset */
887 /* Like DTPREL16_HI, but adjust for low 16 bits. */
888 HOWTO (R_PPC_DTPREL16_HA,
890 1, /* size (0 = byte, 1 = short, 2 = long) */
892 FALSE, /* pc_relative */
894 complain_overflow_dont, /* complain_on_overflow */
895 ppc_elf_unhandled_reloc, /* special_function */
896 "R_PPC_DTPREL16_HA", /* name */
897 FALSE, /* partial_inplace */
899 0xffff, /* dst_mask */
900 FALSE), /* pcrel_offset */
902 /* Computes a tp-relative displacement, the difference between the value of
903 sym+add and the value of the thread pointer (r13). */
904 HOWTO (R_PPC_TPREL32,
906 2, /* size (0 = byte, 1 = short, 2 = long) */
908 FALSE, /* pc_relative */
910 complain_overflow_dont, /* complain_on_overflow */
911 ppc_elf_unhandled_reloc, /* special_function */
912 "R_PPC_TPREL32", /* name */
913 FALSE, /* partial_inplace */
915 0xffffffff, /* dst_mask */
916 FALSE), /* pcrel_offset */
918 /* A 16 bit tprel reloc. */
919 HOWTO (R_PPC_TPREL16,
921 1, /* size (0 = byte, 1 = short, 2 = long) */
923 FALSE, /* pc_relative */
925 complain_overflow_signed, /* complain_on_overflow */
926 ppc_elf_unhandled_reloc, /* special_function */
927 "R_PPC_TPREL16", /* name */
928 FALSE, /* partial_inplace */
930 0xffff, /* dst_mask */
931 FALSE), /* pcrel_offset */
933 /* Like TPREL16, but no overflow. */
934 HOWTO (R_PPC_TPREL16_LO,
936 1, /* size (0 = byte, 1 = short, 2 = long) */
938 FALSE, /* pc_relative */
940 complain_overflow_dont, /* complain_on_overflow */
941 ppc_elf_unhandled_reloc, /* special_function */
942 "R_PPC_TPREL16_LO", /* name */
943 FALSE, /* partial_inplace */
945 0xffff, /* dst_mask */
946 FALSE), /* pcrel_offset */
948 /* Like TPREL16_LO, but next higher group of 16 bits. */
949 HOWTO (R_PPC_TPREL16_HI,
951 1, /* size (0 = byte, 1 = short, 2 = long) */
953 FALSE, /* pc_relative */
955 complain_overflow_dont, /* complain_on_overflow */
956 ppc_elf_unhandled_reloc, /* special_function */
957 "R_PPC_TPREL16_HI", /* name */
958 FALSE, /* partial_inplace */
960 0xffff, /* dst_mask */
961 FALSE), /* pcrel_offset */
963 /* Like TPREL16_HI, but adjust for low 16 bits. */
964 HOWTO (R_PPC_TPREL16_HA,
966 1, /* size (0 = byte, 1 = short, 2 = long) */
968 FALSE, /* pc_relative */
970 complain_overflow_dont, /* complain_on_overflow */
971 ppc_elf_unhandled_reloc, /* special_function */
972 "R_PPC_TPREL16_HA", /* name */
973 FALSE, /* partial_inplace */
975 0xffff, /* dst_mask */
976 FALSE), /* pcrel_offset */
978 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
979 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
980 to the first entry. */
981 HOWTO (R_PPC_GOT_TLSGD16,
983 1, /* size (0 = byte, 1 = short, 2 = long) */
985 FALSE, /* pc_relative */
987 complain_overflow_signed, /* complain_on_overflow */
988 ppc_elf_unhandled_reloc, /* special_function */
989 "R_PPC_GOT_TLSGD16", /* name */
990 FALSE, /* partial_inplace */
992 0xffff, /* dst_mask */
993 FALSE), /* pcrel_offset */
995 /* Like GOT_TLSGD16, but no overflow. */
996 HOWTO (R_PPC_GOT_TLSGD16_LO,
998 1, /* size (0 = byte, 1 = short, 2 = long) */
1000 FALSE, /* pc_relative */
1002 complain_overflow_dont, /* complain_on_overflow */
1003 ppc_elf_unhandled_reloc, /* special_function */
1004 "R_PPC_GOT_TLSGD16_LO", /* name */
1005 FALSE, /* partial_inplace */
1007 0xffff, /* dst_mask */
1008 FALSE), /* pcrel_offset */
1010 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1011 HOWTO (R_PPC_GOT_TLSGD16_HI,
1012 16, /* rightshift */
1013 1, /* size (0 = byte, 1 = short, 2 = long) */
1015 FALSE, /* pc_relative */
1017 complain_overflow_dont, /* complain_on_overflow */
1018 ppc_elf_unhandled_reloc, /* special_function */
1019 "R_PPC_GOT_TLSGD16_HI", /* name */
1020 FALSE, /* partial_inplace */
1022 0xffff, /* dst_mask */
1023 FALSE), /* pcrel_offset */
1025 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1026 HOWTO (R_PPC_GOT_TLSGD16_HA,
1027 16, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE, /* pc_relative */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 ppc_elf_unhandled_reloc, /* special_function */
1034 "R_PPC_GOT_TLSGD16_HA", /* name */
1035 FALSE, /* partial_inplace */
1037 0xffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1040 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1041 with values (sym+add)@dtpmod and zero, and computes the offset to the
1043 HOWTO (R_PPC_GOT_TLSLD16,
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 FALSE, /* pc_relative */
1049 complain_overflow_signed, /* complain_on_overflow */
1050 ppc_elf_unhandled_reloc, /* special_function */
1051 "R_PPC_GOT_TLSLD16", /* name */
1052 FALSE, /* partial_inplace */
1054 0xffff, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1057 /* Like GOT_TLSLD16, but no overflow. */
1058 HOWTO (R_PPC_GOT_TLSLD16_LO,
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE, /* pc_relative */
1064 complain_overflow_dont, /* complain_on_overflow */
1065 ppc_elf_unhandled_reloc, /* special_function */
1066 "R_PPC_GOT_TLSLD16_LO", /* name */
1067 FALSE, /* partial_inplace */
1069 0xffff, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1072 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1073 HOWTO (R_PPC_GOT_TLSLD16_HI,
1074 16, /* rightshift */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE, /* pc_relative */
1079 complain_overflow_dont, /* complain_on_overflow */
1080 ppc_elf_unhandled_reloc, /* special_function */
1081 "R_PPC_GOT_TLSLD16_HI", /* name */
1082 FALSE, /* partial_inplace */
1084 0xffff, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1087 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1088 HOWTO (R_PPC_GOT_TLSLD16_HA,
1089 16, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE, /* pc_relative */
1094 complain_overflow_dont, /* complain_on_overflow */
1095 ppc_elf_unhandled_reloc, /* special_function */
1096 "R_PPC_GOT_TLSLD16_HA", /* name */
1097 FALSE, /* partial_inplace */
1099 0xffff, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1102 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1103 the offset to the entry. */
1104 HOWTO (R_PPC_GOT_DTPREL16,
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 FALSE, /* pc_relative */
1110 complain_overflow_signed, /* complain_on_overflow */
1111 ppc_elf_unhandled_reloc, /* special_function */
1112 "R_PPC_GOT_DTPREL16", /* name */
1113 FALSE, /* partial_inplace */
1115 0xffff, /* dst_mask */
1116 FALSE), /* pcrel_offset */
1118 /* Like GOT_DTPREL16, but no overflow. */
1119 HOWTO (R_PPC_GOT_DTPREL16_LO,
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 FALSE, /* pc_relative */
1125 complain_overflow_dont, /* complain_on_overflow */
1126 ppc_elf_unhandled_reloc, /* special_function */
1127 "R_PPC_GOT_DTPREL16_LO", /* name */
1128 FALSE, /* partial_inplace */
1130 0xffff, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1133 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1134 HOWTO (R_PPC_GOT_DTPREL16_HI,
1135 16, /* rightshift */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 FALSE, /* pc_relative */
1140 complain_overflow_dont, /* complain_on_overflow */
1141 ppc_elf_unhandled_reloc, /* special_function */
1142 "R_PPC_GOT_DTPREL16_HI", /* name */
1143 FALSE, /* partial_inplace */
1145 0xffff, /* dst_mask */
1146 FALSE), /* pcrel_offset */
1148 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1149 HOWTO (R_PPC_GOT_DTPREL16_HA,
1150 16, /* rightshift */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 FALSE, /* pc_relative */
1155 complain_overflow_dont, /* complain_on_overflow */
1156 ppc_elf_unhandled_reloc, /* special_function */
1157 "R_PPC_GOT_DTPREL16_HA", /* name */
1158 FALSE, /* partial_inplace */
1160 0xffff, /* dst_mask */
1161 FALSE), /* pcrel_offset */
1163 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1164 offset to the entry. */
1165 HOWTO (R_PPC_GOT_TPREL16,
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1169 FALSE, /* pc_relative */
1171 complain_overflow_signed, /* complain_on_overflow */
1172 ppc_elf_unhandled_reloc, /* special_function */
1173 "R_PPC_GOT_TPREL16", /* name */
1174 FALSE, /* partial_inplace */
1176 0xffff, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1179 /* Like GOT_TPREL16, but no overflow. */
1180 HOWTO (R_PPC_GOT_TPREL16_LO,
1182 1, /* size (0 = byte, 1 = short, 2 = long) */
1184 FALSE, /* pc_relative */
1186 complain_overflow_dont, /* complain_on_overflow */
1187 ppc_elf_unhandled_reloc, /* special_function */
1188 "R_PPC_GOT_TPREL16_LO", /* name */
1189 FALSE, /* partial_inplace */
1191 0xffff, /* dst_mask */
1192 FALSE), /* pcrel_offset */
1194 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1195 HOWTO (R_PPC_GOT_TPREL16_HI,
1196 16, /* rightshift */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1199 FALSE, /* pc_relative */
1201 complain_overflow_dont, /* complain_on_overflow */
1202 ppc_elf_unhandled_reloc, /* special_function */
1203 "R_PPC_GOT_TPREL16_HI", /* name */
1204 FALSE, /* partial_inplace */
1206 0xffff, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1209 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1210 HOWTO (R_PPC_GOT_TPREL16_HA,
1211 16, /* rightshift */
1212 1, /* size (0 = byte, 1 = short, 2 = long) */
1214 FALSE, /* pc_relative */
1216 complain_overflow_dont, /* complain_on_overflow */
1217 ppc_elf_unhandled_reloc, /* special_function */
1218 "R_PPC_GOT_TPREL16_HA", /* name */
1219 FALSE, /* partial_inplace */
1221 0xffff, /* dst_mask */
1222 FALSE), /* pcrel_offset */
1224 /* The remaining relocs are from the Embedded ELF ABI, and are not
1225 in the SVR4 ELF ABI. */
1227 /* 32 bit value resulting from the addend minus the symbol. */
1228 HOWTO (R_PPC_EMB_NADDR32, /* type */
1230 2, /* size (0 = byte, 1 = short, 2 = long) */
1232 FALSE, /* pc_relative */
1234 complain_overflow_bitfield, /* complain_on_overflow */
1235 bfd_elf_generic_reloc, /* special_function */
1236 "R_PPC_EMB_NADDR32", /* name */
1237 FALSE, /* partial_inplace */
1239 0xffffffff, /* dst_mask */
1240 FALSE), /* pcrel_offset */
1242 /* 16 bit value resulting from the addend minus the symbol. */
1243 HOWTO (R_PPC_EMB_NADDR16, /* type */
1245 1, /* size (0 = byte, 1 = short, 2 = long) */
1247 FALSE, /* pc_relative */
1249 complain_overflow_bitfield, /* complain_on_overflow */
1250 bfd_elf_generic_reloc, /* special_function */
1251 "R_PPC_EMB_NADDR16", /* name */
1252 FALSE, /* partial_inplace */
1254 0xffff, /* dst_mask */
1255 FALSE), /* pcrel_offset */
1257 /* 16 bit value resulting from the addend minus the symbol. */
1258 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1260 1, /* size (0 = byte, 1 = short, 2 = long) */
1262 FALSE, /* pc_relative */
1264 complain_overflow_dont,/* complain_on_overflow */
1265 bfd_elf_generic_reloc, /* special_function */
1266 "R_PPC_EMB_ADDR16_LO", /* name */
1267 FALSE, /* partial_inplace */
1269 0xffff, /* dst_mask */
1270 FALSE), /* pcrel_offset */
1272 /* The high order 16 bits of the addend minus the symbol. */
1273 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1274 16, /* rightshift */
1275 1, /* size (0 = byte, 1 = short, 2 = long) */
1277 FALSE, /* pc_relative */
1279 complain_overflow_dont, /* complain_on_overflow */
1280 bfd_elf_generic_reloc, /* special_function */
1281 "R_PPC_EMB_NADDR16_HI", /* name */
1282 FALSE, /* partial_inplace */
1284 0xffff, /* dst_mask */
1285 FALSE), /* pcrel_offset */
1287 /* The high order 16 bits of the result of the addend minus the address,
1288 plus 1 if the contents of the low 16 bits, treated as a signed number,
1290 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1291 16, /* rightshift */
1292 1, /* size (0 = byte, 1 = short, 2 = long) */
1294 FALSE, /* pc_relative */
1296 complain_overflow_dont, /* complain_on_overflow */
1297 ppc_elf_addr16_ha_reloc, /* special_function */
1298 "R_PPC_EMB_NADDR16_HA", /* name */
1299 FALSE, /* partial_inplace */
1301 0xffff, /* dst_mask */
1302 FALSE), /* pcrel_offset */
1304 /* 16 bit value resulting from allocating a 4 byte word to hold an
1305 address in the .sdata section, and returning the offset from
1306 _SDA_BASE_ for that relocation. */
1307 HOWTO (R_PPC_EMB_SDAI16, /* type */
1309 1, /* size (0 = byte, 1 = short, 2 = long) */
1311 FALSE, /* pc_relative */
1313 complain_overflow_signed, /* complain_on_overflow */
1314 bfd_elf_generic_reloc, /* special_function */
1315 "R_PPC_EMB_SDAI16", /* name */
1316 FALSE, /* partial_inplace */
1318 0xffff, /* dst_mask */
1319 FALSE), /* pcrel_offset */
1321 /* 16 bit value resulting from allocating a 4 byte word to hold an
1322 address in the .sdata2 section, and returning the offset from
1323 _SDA2_BASE_ for that relocation. */
1324 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1326 1, /* size (0 = byte, 1 = short, 2 = long) */
1328 FALSE, /* pc_relative */
1330 complain_overflow_signed, /* complain_on_overflow */
1331 bfd_elf_generic_reloc, /* special_function */
1332 "R_PPC_EMB_SDA2I16", /* name */
1333 FALSE, /* partial_inplace */
1335 0xffff, /* dst_mask */
1336 FALSE), /* pcrel_offset */
1338 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1339 small data items. */
1340 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1342 1, /* size (0 = byte, 1 = short, 2 = long) */
1344 FALSE, /* pc_relative */
1346 complain_overflow_signed, /* complain_on_overflow */
1347 bfd_elf_generic_reloc, /* special_function */
1348 "R_PPC_EMB_SDA2REL", /* name */
1349 FALSE, /* partial_inplace */
1351 0xffff, /* dst_mask */
1352 FALSE), /* pcrel_offset */
1354 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1355 signed offset from the appropriate base, and filling in the register
1356 field with the appropriate register (0, 2, or 13). */
1357 HOWTO (R_PPC_EMB_SDA21, /* type */
1359 2, /* size (0 = byte, 1 = short, 2 = long) */
1361 FALSE, /* pc_relative */
1363 complain_overflow_signed, /* complain_on_overflow */
1364 bfd_elf_generic_reloc, /* special_function */
1365 "R_PPC_EMB_SDA21", /* name */
1366 FALSE, /* partial_inplace */
1368 0xffff, /* dst_mask */
1369 FALSE), /* pcrel_offset */
1371 /* Relocation not handled: R_PPC_EMB_MRKREF */
1372 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1373 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1374 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1375 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1376 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1378 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1379 in the 16 bit signed offset from the appropriate base, and filling in the
1380 register field with the appropriate register (0, 2, or 13). */
1381 HOWTO (R_PPC_EMB_RELSDA, /* type */
1383 1, /* size (0 = byte, 1 = short, 2 = long) */
1385 FALSE, /* pc_relative */
1387 complain_overflow_signed, /* complain_on_overflow */
1388 bfd_elf_generic_reloc, /* special_function */
1389 "R_PPC_EMB_RELSDA", /* name */
1390 FALSE, /* partial_inplace */
1392 0xffff, /* dst_mask */
1393 FALSE), /* pcrel_offset */
1395 HOWTO (R_PPC_IRELATIVE, /* type */
1397 2, /* size (0 = byte, 1 = short, 2 = long) */
1399 FALSE, /* pc_relative */
1401 complain_overflow_bitfield, /* complain_on_overflow */
1402 bfd_elf_generic_reloc, /* special_function */
1403 "R_PPC_IRELATIVE", /* name */
1404 FALSE, /* partial_inplace */
1406 0xffffffff, /* dst_mask */
1407 FALSE), /* pcrel_offset */
1409 /* A 16 bit relative relocation. */
1410 HOWTO (R_PPC_REL16, /* type */
1412 1, /* size (0 = byte, 1 = short, 2 = long) */
1414 TRUE, /* pc_relative */
1416 complain_overflow_bitfield, /* complain_on_overflow */
1417 bfd_elf_generic_reloc, /* special_function */
1418 "R_PPC_REL16", /* name */
1419 FALSE, /* partial_inplace */
1421 0xffff, /* dst_mask */
1422 TRUE), /* pcrel_offset */
1424 /* A 16 bit relative relocation without overflow. */
1425 HOWTO (R_PPC_REL16_LO, /* type */
1427 1, /* size (0 = byte, 1 = short, 2 = long) */
1429 TRUE, /* pc_relative */
1431 complain_overflow_dont,/* complain_on_overflow */
1432 bfd_elf_generic_reloc, /* special_function */
1433 "R_PPC_REL16_LO", /* name */
1434 FALSE, /* partial_inplace */
1436 0xffff, /* dst_mask */
1437 TRUE), /* pcrel_offset */
1439 /* The high order 16 bits of a relative address. */
1440 HOWTO (R_PPC_REL16_HI, /* type */
1441 16, /* rightshift */
1442 1, /* size (0 = byte, 1 = short, 2 = long) */
1444 TRUE, /* pc_relative */
1446 complain_overflow_dont, /* complain_on_overflow */
1447 bfd_elf_generic_reloc, /* special_function */
1448 "R_PPC_REL16_HI", /* name */
1449 FALSE, /* partial_inplace */
1451 0xffff, /* dst_mask */
1452 TRUE), /* pcrel_offset */
1454 /* The high order 16 bits of a relative address, plus 1 if the contents of
1455 the low 16 bits, treated as a signed number, is negative. */
1456 HOWTO (R_PPC_REL16_HA, /* type */
1457 16, /* rightshift */
1458 1, /* size (0 = byte, 1 = short, 2 = long) */
1460 TRUE, /* pc_relative */
1462 complain_overflow_dont, /* complain_on_overflow */
1463 ppc_elf_addr16_ha_reloc, /* special_function */
1464 "R_PPC_REL16_HA", /* name */
1465 FALSE, /* partial_inplace */
1467 0xffff, /* dst_mask */
1468 TRUE), /* pcrel_offset */
1470 /* GNU extension to record C++ vtable hierarchy. */
1471 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1473 0, /* size (0 = byte, 1 = short, 2 = long) */
1475 FALSE, /* pc_relative */
1477 complain_overflow_dont, /* complain_on_overflow */
1478 NULL, /* special_function */
1479 "R_PPC_GNU_VTINHERIT", /* name */
1480 FALSE, /* partial_inplace */
1483 FALSE), /* pcrel_offset */
1485 /* GNU extension to record C++ vtable member usage. */
1486 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1488 0, /* size (0 = byte, 1 = short, 2 = long) */
1490 FALSE, /* pc_relative */
1492 complain_overflow_dont, /* complain_on_overflow */
1493 NULL, /* special_function */
1494 "R_PPC_GNU_VTENTRY", /* name */
1495 FALSE, /* partial_inplace */
1498 FALSE), /* pcrel_offset */
1500 /* Phony reloc to handle AIX style TOC entries. */
1501 HOWTO (R_PPC_TOC16, /* type */
1503 1, /* size (0 = byte, 1 = short, 2 = long) */
1505 FALSE, /* pc_relative */
1507 complain_overflow_signed, /* complain_on_overflow */
1508 bfd_elf_generic_reloc, /* special_function */
1509 "R_PPC_TOC16", /* name */
1510 FALSE, /* partial_inplace */
1512 0xffff, /* dst_mask */
1513 FALSE), /* pcrel_offset */
1516 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1519 ppc_elf_howto_init (void)
1521 unsigned int i, type;
1524 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1527 type = ppc_elf_howto_raw[i].type;
1528 if (type >= (sizeof (ppc_elf_howto_table)
1529 / sizeof (ppc_elf_howto_table[0])))
1531 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1535 static reloc_howto_type *
1536 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1537 bfd_reloc_code_real_type code)
1539 enum elf_ppc_reloc_type r;
1541 /* Initialize howto table if not already done. */
1542 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1543 ppc_elf_howto_init ();
1550 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1551 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1552 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1553 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1554 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1555 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1556 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1557 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1558 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1559 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1560 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1561 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1562 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1563 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1564 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1565 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1566 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1567 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1568 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1569 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1570 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1571 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1572 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1573 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1574 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1575 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1576 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1577 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1578 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1579 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1580 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1581 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1582 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1583 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1584 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1585 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1586 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1587 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1588 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1589 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1590 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1591 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1592 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1593 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1594 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1595 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1596 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1597 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1598 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1599 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1600 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1601 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1602 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1603 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1604 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1605 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1606 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1607 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1608 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1609 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1610 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1611 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1612 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1613 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1614 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1615 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1616 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1617 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1618 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1619 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1620 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1621 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1622 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1623 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1624 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1625 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1626 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1627 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1628 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1629 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1630 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1631 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1632 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1633 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1634 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1635 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1636 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1639 return ppc_elf_howto_table[r];
1642 static reloc_howto_type *
1643 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1649 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1651 if (ppc_elf_howto_raw[i].name != NULL
1652 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1653 return &ppc_elf_howto_raw[i];
1658 /* Set the howto pointer for a PowerPC ELF reloc. */
1661 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1663 Elf_Internal_Rela *dst)
1665 /* Initialize howto table if not already done. */
1666 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1667 ppc_elf_howto_init ();
1669 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1670 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1672 /* Just because the above assert didn't trigger doesn't mean that
1673 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1674 if (!cache_ptr->howto)
1676 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1677 abfd, ELF32_R_TYPE (dst->r_info));
1678 bfd_set_error (bfd_error_bad_value);
1680 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1684 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1686 static bfd_reloc_status_type
1687 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1688 arelent *reloc_entry,
1690 void *data ATTRIBUTE_UNUSED,
1691 asection *input_section,
1693 char **error_message ATTRIBUTE_UNUSED)
1697 if (output_bfd != NULL)
1699 reloc_entry->address += input_section->output_offset;
1700 return bfd_reloc_ok;
1703 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1704 return bfd_reloc_outofrange;
1706 if (bfd_is_com_section (symbol->section))
1709 relocation = symbol->value;
1711 relocation += symbol->section->output_section->vma;
1712 relocation += symbol->section->output_offset;
1713 relocation += reloc_entry->addend;
1714 if (reloc_entry->howto->pc_relative)
1715 relocation -= reloc_entry->address;
1717 reloc_entry->addend += (relocation & 0x8000) << 1;
1719 return bfd_reloc_continue;
1722 static bfd_reloc_status_type
1723 ppc_elf_unhandled_reloc (bfd *abfd,
1724 arelent *reloc_entry,
1727 asection *input_section,
1729 char **error_message)
1731 /* If this is a relocatable link (output_bfd test tells us), just
1732 call the generic function. Any adjustment will be done at final
1734 if (output_bfd != NULL)
1735 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1736 input_section, output_bfd, error_message);
1738 if (error_message != NULL)
1740 static char buf[60];
1741 sprintf (buf, _("generic linker can't handle %s"),
1742 reloc_entry->howto->name);
1743 *error_message = buf;
1745 return bfd_reloc_dangerous;
1748 /* Sections created by the linker. */
1750 typedef struct elf_linker_section
1752 /* Pointer to the bfd section. */
1756 /* Associated bss section name. */
1757 const char *bss_name;
1758 /* Associated symbol name. */
1759 const char *sym_name;
1760 /* Associated symbol. */
1761 struct elf_link_hash_entry *sym;
1762 } elf_linker_section_t;
1764 /* Linked list of allocated pointer entries. This hangs off of the
1765 symbol lists, and provides allows us to return different pointers,
1766 based on different addend's. */
1768 typedef struct elf_linker_section_pointers
1770 /* next allocated pointer for this symbol */
1771 struct elf_linker_section_pointers *next;
1772 /* offset of pointer from beginning of section */
1776 /* which linker section this is */
1777 elf_linker_section_t *lsect;
1778 } elf_linker_section_pointers_t;
1780 struct ppc_elf_obj_tdata
1782 struct elf_obj_tdata elf;
1784 /* A mapping from local symbols to offsets into the various linker
1785 sections added. This is index by the symbol index. */
1786 elf_linker_section_pointers_t **linker_section_pointers;
1788 /* Flags used to auto-detect plt type. */
1789 unsigned int makes_plt_call : 1;
1790 unsigned int has_rel16 : 1;
1793 #define ppc_elf_tdata(bfd) \
1794 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1796 #define elf_local_ptr_offsets(bfd) \
1797 (ppc_elf_tdata (bfd)->linker_section_pointers)
1799 #define is_ppc_elf(bfd) \
1800 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1801 && elf_object_id (bfd) == PPC32_ELF_DATA)
1803 /* Override the generic function because we store some extras. */
1806 ppc_elf_mkobject (bfd *abfd)
1808 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1812 /* Fix bad default arch selected for a 32 bit input bfd when the
1813 default is 64 bit. */
1816 ppc_elf_object_p (bfd *abfd)
1818 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1820 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1822 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1824 /* Relies on arch after 64 bit default being 32 bit default. */
1825 abfd->arch_info = abfd->arch_info->next;
1826 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1832 /* Function to set whether a module needs the -mrelocatable bit set. */
1835 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1837 BFD_ASSERT (!elf_flags_init (abfd)
1838 || elf_elfheader (abfd)->e_flags == flags);
1840 elf_elfheader (abfd)->e_flags = flags;
1841 elf_flags_init (abfd) = TRUE;
1845 /* Support for core dump NOTE sections. */
1848 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1853 switch (note->descsz)
1858 case 268: /* Linux/PPC. */
1860 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1863 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
1872 /* Make a ".reg/999" section. */
1873 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1874 size, note->descpos + offset);
1878 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1880 switch (note->descsz)
1885 case 128: /* Linux/PPC elf_prpsinfo. */
1886 elf_tdata (abfd)->core_pid
1887 = bfd_get_32 (abfd, note->descdata + 16);
1888 elf_tdata (abfd)->core_program
1889 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1890 elf_tdata (abfd)->core_command
1891 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1894 /* Note that for some reason, a spurious space is tacked
1895 onto the end of the args in some (at least one anyway)
1896 implementations, so strip it off if it exists. */
1899 char *command = elf_tdata (abfd)->core_command;
1900 int n = strlen (command);
1902 if (0 < n && command[n - 1] == ' ')
1903 command[n - 1] = '\0';
1910 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1922 va_start (ap, note_type);
1923 memset (data, 0, 32);
1924 strncpy (data + 32, va_arg (ap, const char *), 16);
1925 strncpy (data + 48, va_arg (ap, const char *), 80);
1927 return elfcore_write_note (abfd, buf, bufsiz,
1928 "CORE", note_type, data, sizeof (data));
1939 va_start (ap, note_type);
1940 memset (data, 0, 72);
1941 pid = va_arg (ap, long);
1942 bfd_put_32 (abfd, pid, data + 24);
1943 cursig = va_arg (ap, int);
1944 bfd_put_16 (abfd, cursig, data + 12);
1945 greg = va_arg (ap, const void *);
1946 memcpy (data + 72, greg, 192);
1947 memset (data + 264, 0, 4);
1949 return elfcore_write_note (abfd, buf, bufsiz,
1950 "CORE", note_type, data, sizeof (data));
1955 /* Return address for Ith PLT stub in section PLT, for relocation REL
1956 or (bfd_vma) -1 if it should not be included. */
1959 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1960 const asection *plt ATTRIBUTE_UNUSED,
1963 return rel->address;
1966 /* Handle a PowerPC specific section when reading an object file. This
1967 is called when bfd_section_from_shdr finds a section with an unknown
1971 ppc_elf_section_from_shdr (bfd *abfd,
1972 Elf_Internal_Shdr *hdr,
1979 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1982 newsect = hdr->bfd_section;
1983 flags = bfd_get_section_flags (abfd, newsect);
1984 if (hdr->sh_flags & SHF_EXCLUDE)
1985 flags |= SEC_EXCLUDE;
1987 if (hdr->sh_type == SHT_ORDERED)
1988 flags |= SEC_SORT_ENTRIES;
1990 bfd_set_section_flags (abfd, newsect, flags);
1994 /* Set up any other section flags and such that may be necessary. */
1997 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1998 Elf_Internal_Shdr *shdr,
2001 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2002 shdr->sh_type = SHT_ORDERED;
2007 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2008 need to bump up the number of section headers. */
2011 ppc_elf_additional_program_headers (bfd *abfd,
2012 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2017 s = bfd_get_section_by_name (abfd, ".sbss2");
2018 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2021 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2022 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2028 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2029 .PPC.EMB.sbss0 a normal section, and not a bss section so
2030 that the linker doesn't crater when trying to make more than
2033 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2035 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2036 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2037 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2038 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2039 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2040 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2041 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2042 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2043 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2044 { NULL, 0, 0, 0, 0 }
2047 /* This is what we want for new plt/got. */
2048 static struct bfd_elf_special_section ppc_alt_plt =
2049 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2051 static const struct bfd_elf_special_section *
2052 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2054 const struct bfd_elf_special_section *ssect;
2056 /* See if this is one of the special sections. */
2057 if (sec->name == NULL)
2060 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2064 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2065 ssect = &ppc_alt_plt;
2069 return _bfd_elf_get_sec_type_attr (abfd, sec);
2072 /* Very simple linked list structure for recording apuinfo values. */
2073 typedef struct apuinfo_list
2075 struct apuinfo_list *next;
2076 unsigned long value;
2080 static apuinfo_list *head;
2081 static bfd_boolean apuinfo_set;
2084 apuinfo_list_init (void)
2087 apuinfo_set = FALSE;
2091 apuinfo_list_add (unsigned long value)
2093 apuinfo_list *entry = head;
2095 while (entry != NULL)
2097 if (entry->value == value)
2099 entry = entry->next;
2102 entry = bfd_malloc (sizeof (* entry));
2106 entry->value = value;
2112 apuinfo_list_length (void)
2114 apuinfo_list *entry;
2115 unsigned long count;
2117 for (entry = head, count = 0;
2119 entry = entry->next)
2125 static inline unsigned long
2126 apuinfo_list_element (unsigned long number)
2128 apuinfo_list * entry;
2132 entry = entry->next)
2135 return entry ? entry->value : 0;
2139 apuinfo_list_finish (void)
2141 apuinfo_list *entry;
2143 for (entry = head; entry;)
2145 apuinfo_list *next = entry->next;
2153 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2154 #define APUINFO_LABEL "APUinfo"
2156 /* Scan the input BFDs and create a linked list of
2157 the APUinfo values that will need to be emitted. */
2160 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2164 char *buffer = NULL;
2165 bfd_size_type largest_input_size = 0;
2167 unsigned long length;
2168 const char *error_message = NULL;
2170 if (link_info == NULL)
2173 apuinfo_list_init ();
2175 /* Read in the input sections contents. */
2176 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2178 unsigned long datum;
2180 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2184 error_message = _("corrupt %s section in %B");
2185 length = asec->size;
2190 if (largest_input_size < asec->size)
2194 largest_input_size = asec->size;
2195 buffer = bfd_malloc (largest_input_size);
2200 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2201 || (bfd_bread (buffer, length, ibfd) != length))
2203 error_message = _("unable to read in %s section from %B");
2207 /* Verify the contents of the header. Note - we have to
2208 extract the values this way in order to allow for a
2209 host whose endian-ness is different from the target. */
2210 datum = bfd_get_32 (ibfd, buffer);
2211 if (datum != sizeof APUINFO_LABEL)
2214 datum = bfd_get_32 (ibfd, buffer + 8);
2218 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2221 /* Get the number of bytes used for apuinfo entries. */
2222 datum = bfd_get_32 (ibfd, buffer + 4);
2223 if (datum + 20 != length)
2226 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2227 for (i = 0; i < datum; i += 4)
2228 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2231 error_message = NULL;
2235 /* Compute the size of the output section. */
2236 unsigned num_entries = apuinfo_list_length ();
2238 /* Set the output section size, if it exists. */
2239 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2241 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2244 error_message = _("warning: unable to set size of %s section in %B");
2253 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2256 /* Prevent the output section from accumulating the input sections'
2257 contents. We have already stored this in our linked list structure. */
2260 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2261 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2263 bfd_byte *contents ATTRIBUTE_UNUSED)
2265 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2268 /* Finally we can generate the output section. */
2271 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2276 unsigned num_entries;
2277 bfd_size_type length;
2279 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2286 length = asec->size;
2290 buffer = bfd_malloc (length);
2293 (*_bfd_error_handler)
2294 (_("failed to allocate space for new APUinfo section."));
2298 /* Create the apuinfo header. */
2299 num_entries = apuinfo_list_length ();
2300 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2301 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2302 bfd_put_32 (abfd, 0x2, buffer + 8);
2303 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2306 for (i = 0; i < num_entries; i++)
2308 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2312 if (length != asec->size)
2313 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2315 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2316 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2320 apuinfo_list_finish ();
2324 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2326 bfd_byte buf[GLINK_ENTRY_SIZE];
2328 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2331 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2332 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2333 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2334 && bfd_get_32 (abfd, buf + 12) == BCTR);
2338 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2340 bfd_vma vma = *(bfd_vma *) ptr;
2341 return ((section->flags & SEC_ALLOC) != 0
2342 && section->vma <= vma
2343 && vma < section->vma + section->size);
2347 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2348 long dynsymcount, asymbol **dynsyms,
2351 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2352 asection *plt, *relplt, *dynamic, *glink;
2353 bfd_vma glink_vma = 0;
2354 bfd_vma resolv_vma = 0;
2365 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2368 if (dynsymcount <= 0)
2371 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2375 plt = bfd_get_section_by_name (abfd, ".plt");
2379 /* Call common code to handle old-style executable PLTs. */
2380 if (elf_section_flags (plt) & SHF_EXECINSTR)
2381 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2382 dynsymcount, dynsyms, ret);
2384 /* If this object was prelinked, the prelinker stored the address
2385 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2386 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2387 if (dynamic != NULL)
2389 bfd_byte *dynbuf, *extdyn, *extdynend;
2391 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2393 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2396 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2397 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2400 extdynend = extdyn + dynamic->size;
2401 for (; extdyn < extdynend; extdyn += extdynsize)
2403 Elf_Internal_Dyn dyn;
2404 (*swap_dyn_in) (abfd, extdyn, &dyn);
2406 if (dyn.d_tag == DT_NULL)
2409 if (dyn.d_tag == DT_PPC_GOT)
2411 unsigned int g_o_t = dyn.d_un.d_val;
2412 asection *got = bfd_get_section_by_name (abfd, ".got");
2414 && bfd_get_section_contents (abfd, got, buf,
2415 g_o_t - got->vma + 4, 4))
2416 glink_vma = bfd_get_32 (abfd, buf);
2423 /* Otherwise we read the first plt entry. */
2426 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2427 glink_vma = bfd_get_32 (abfd, buf);
2433 /* The .glink section usually does not survive the final
2434 link; search for the section (usually .text) where the
2435 glink stubs now reside. */
2436 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2440 /* Determine glink PLT resolver by reading the relative branch
2441 from the first glink stub. */
2442 if (bfd_get_section_contents (abfd, glink, buf,
2443 glink_vma - glink->vma, 4))
2445 unsigned int insn = bfd_get_32 (abfd, buf);
2447 /* The first glink stub may either branch to the resolver ... */
2449 if ((insn & ~0x3fffffc) == 0)
2450 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2452 /* ... or fall through a bunch of NOPs. */
2453 else if ((insn ^ B ^ NOP) == 0)
2455 bfd_get_section_contents (abfd, glink, buf,
2456 glink_vma - glink->vma + i, 4);
2458 if (bfd_get_32 (abfd, buf) != NOP)
2460 resolv_vma = glink_vma + i;
2465 count = relplt->size / sizeof (Elf32_External_Rela);
2466 stub_vma = glink_vma - (bfd_vma) count * 16;
2467 /* If the stubs are those for -shared/-pie then we might have
2468 multiple stubs for each plt entry. If that is the case then
2469 there is no way to associate stubs with their plt entries short
2470 of figuring out the GOT pointer value used in the stub. */
2471 if (!is_nonpic_glink_stub (abfd, glink,
2472 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2475 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2476 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2479 size = count * sizeof (asymbol);
2480 p = relplt->relocation;
2481 for (i = 0; i < count; i++, p++)
2483 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2485 size += sizeof ("+0x") - 1 + 8;
2488 size += sizeof (asymbol) + sizeof ("__glink");
2491 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2493 s = *ret = bfd_malloc (size);
2497 names = (char *) (s + count + 1 + (resolv_vma != 0));
2498 p = relplt->relocation;
2499 for (i = 0; i < count; i++, p++)
2503 *s = **p->sym_ptr_ptr;
2504 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2505 we are defining a symbol, ensure one of them is set. */
2506 if ((s->flags & BSF_LOCAL) == 0)
2507 s->flags |= BSF_GLOBAL;
2508 s->flags |= BSF_SYNTHETIC;
2510 s->value = stub_vma - glink->vma;
2513 len = strlen ((*p->sym_ptr_ptr)->name);
2514 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2518 memcpy (names, "+0x", sizeof ("+0x") - 1);
2519 names += sizeof ("+0x") - 1;
2520 bfd_sprintf_vma (abfd, names, p->addend);
2521 names += strlen (names);
2523 memcpy (names, "@plt", sizeof ("@plt"));
2524 names += sizeof ("@plt");
2529 /* Add a symbol at the start of the glink branch table. */
2530 memset (s, 0, sizeof *s);
2532 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2534 s->value = glink_vma - glink->vma;
2536 memcpy (names, "__glink", sizeof ("__glink"));
2537 names += sizeof ("__glink");
2543 /* Add a symbol for the glink PLT resolver. */
2544 memset (s, 0, sizeof *s);
2546 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2548 s->value = resolv_vma - glink->vma;
2550 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2551 names += sizeof ("__glink_PLTresolve");
2559 /* The following functions are specific to the ELF linker, while
2560 functions above are used generally. They appear in this file more
2561 or less in the order in which they are called. eg.
2562 ppc_elf_check_relocs is called early in the link process,
2563 ppc_elf_finish_dynamic_sections is one of the last functions
2566 /* Track PLT entries needed for a given symbol. We might need more
2567 than one glink entry per symbol when generating a pic binary. */
2570 struct plt_entry *next;
2572 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2573 This field stores the offset into .got2 used to initialise the
2574 GOT pointer reg. It will always be at least 32768. (Current
2575 gcc always uses an offset of 32768, but ld -r will pack .got2
2576 sections together resulting in larger offsets). */
2579 /* The .got2 section. */
2582 /* PLT refcount or offset. */
2585 bfd_signed_vma refcount;
2589 /* .glink stub offset. */
2590 bfd_vma glink_offset;
2593 /* Of those relocs that might be copied as dynamic relocs, this function
2594 selects those that must be copied when linking a shared library,
2595 even when the symbol is local. */
2598 must_be_dyn_reloc (struct bfd_link_info *info,
2599 enum elf_ppc_reloc_type r_type)
2608 case R_PPC_REL14_BRTAKEN:
2609 case R_PPC_REL14_BRNTAKEN:
2615 case R_PPC_TPREL16_LO:
2616 case R_PPC_TPREL16_HI:
2617 case R_PPC_TPREL16_HA:
2618 return !info->executable;
2622 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2623 copying dynamic variables from a shared lib into an app's dynbss
2624 section, and instead use a dynamic relocation to point into the
2626 #define ELIMINATE_COPY_RELOCS 1
2628 /* PPC ELF linker hash entry. */
2630 struct ppc_elf_link_hash_entry
2632 struct elf_link_hash_entry elf;
2634 /* If this symbol is used in the linker created sections, the processor
2635 specific backend uses this field to map the field into the offset
2636 from the beginning of the section. */
2637 elf_linker_section_pointers_t *linker_section_pointer;
2639 /* Track dynamic relocs copied for this symbol. */
2640 struct elf_dyn_relocs *dyn_relocs;
2642 /* Contexts in which symbol is used in the GOT (or TOC).
2643 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2644 corresponding relocs are encountered during check_relocs.
2645 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2646 indicate the corresponding GOT entry type is not needed. */
2647 #define TLS_GD 1 /* GD reloc. */
2648 #define TLS_LD 2 /* LD reloc. */
2649 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2650 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2651 #define TLS_TLS 16 /* Any TLS reloc. */
2652 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2653 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
2656 /* Nonzero if we have seen a small data relocation referring to this
2658 unsigned char has_sda_refs;
2661 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2663 /* PPC ELF linker hash table. */
2665 struct ppc_elf_link_hash_table
2667 struct elf_link_hash_table elf;
2669 /* Short-cuts to get to dynamic linker sections. */
2681 elf_linker_section_t sdata[2];
2683 asection *glink_eh_frame;
2685 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2688 /* The .got.plt section (VxWorks only)*/
2691 /* Shortcut to __tls_get_addr. */
2692 struct elf_link_hash_entry *tls_get_addr;
2694 /* The bfd that forced an old-style PLT. */
2697 /* TLS local dynamic got entry handling. */
2699 bfd_signed_vma refcount;
2703 /* Offset of branch table to PltResolve function in glink. */
2704 bfd_vma glink_pltresolve;
2706 /* Size of reserved GOT entries. */
2707 unsigned int got_header_size;
2708 /* Non-zero if allocating the header left a gap. */
2709 unsigned int got_gap;
2711 /* The type of PLT we have chosen to use. */
2712 enum ppc_elf_plt_type plt_type;
2714 /* Set if we should emit symbols for stubs. */
2715 unsigned int emit_stub_syms:1;
2717 /* Set if __tls_get_addr optimization should not be done. */
2718 unsigned int no_tls_get_addr_opt:1;
2720 /* True if the target system is VxWorks. */
2721 unsigned int is_vxworks:1;
2723 /* The size of PLT entries. */
2725 /* The distance between adjacent PLT slots. */
2727 /* The size of the first PLT entry. */
2728 int plt_initial_entry_size;
2730 /* Small local sym cache. */
2731 struct sym_cache sym_cache;
2734 /* Rename some of the generic section flags to better document how they
2737 /* Nonzero if this section has TLS related relocations. */
2738 #define has_tls_reloc sec_flg0
2740 /* Nonzero if this section has a call to __tls_get_addr. */
2741 #define has_tls_get_addr_call sec_flg1
2743 /* Get the PPC ELF linker hash table from a link_info structure. */
2745 #define ppc_elf_hash_table(p) \
2746 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2747 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
2749 /* Create an entry in a PPC ELF linker hash table. */
2751 static struct bfd_hash_entry *
2752 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2753 struct bfd_hash_table *table,
2756 /* Allocate the structure if it has not already been allocated by a
2760 entry = bfd_hash_allocate (table,
2761 sizeof (struct ppc_elf_link_hash_entry));
2766 /* Call the allocation method of the superclass. */
2767 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2770 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2771 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2772 ppc_elf_hash_entry (entry)->tls_mask = 0;
2773 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
2779 /* Create a PPC ELF linker hash table. */
2781 static struct bfd_link_hash_table *
2782 ppc_elf_link_hash_table_create (bfd *abfd)
2784 struct ppc_elf_link_hash_table *ret;
2786 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2790 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2791 ppc_elf_link_hash_newfunc,
2792 sizeof (struct ppc_elf_link_hash_entry),
2799 ret->elf.init_plt_refcount.refcount = 0;
2800 ret->elf.init_plt_refcount.glist = NULL;
2801 ret->elf.init_plt_offset.offset = 0;
2802 ret->elf.init_plt_offset.glist = NULL;
2804 ret->sdata[0].name = ".sdata";
2805 ret->sdata[0].sym_name = "_SDA_BASE_";
2806 ret->sdata[0].bss_name = ".sbss";
2808 ret->sdata[1].name = ".sdata2";
2809 ret->sdata[1].sym_name = "_SDA2_BASE_";
2810 ret->sdata[1].bss_name = ".sbss2";
2812 ret->plt_entry_size = 12;
2813 ret->plt_slot_size = 8;
2814 ret->plt_initial_entry_size = 72;
2816 return &ret->elf.root;
2819 /* Create .got and the related sections. */
2822 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2824 struct ppc_elf_link_hash_table *htab;
2828 if (!_bfd_elf_create_got_section (abfd, info))
2831 htab = ppc_elf_hash_table (info);
2832 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2836 if (htab->is_vxworks)
2838 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2844 /* The powerpc .got has a blrl instruction in it. Mark it
2846 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2847 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2848 if (!bfd_set_section_flags (abfd, s, flags))
2852 htab->relgot = bfd_get_section_by_name (abfd, ".rela.got");
2860 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
2862 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2866 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
2867 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2868 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
2871 || !bfd_set_section_alignment (abfd, s, 4))
2874 if (!info->no_ld_generated_unwind_info)
2876 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2877 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2878 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
2879 htab->glink_eh_frame = s;
2881 || !bfd_set_section_alignment (abfd, s, 2))
2885 flags = SEC_ALLOC | SEC_LINKER_CREATED;
2886 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
2889 || !bfd_set_section_alignment (abfd, s, 4))
2892 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2893 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2894 s = bfd_make_section_with_flags (abfd, ".rela.iplt", flags);
2897 || ! bfd_set_section_alignment (abfd, s, 2))
2902 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2903 to output sections (just like _bfd_elf_create_dynamic_sections has
2904 to create .dynbss and .rela.bss). */
2907 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2909 struct ppc_elf_link_hash_table *htab;
2913 htab = ppc_elf_hash_table (info);
2915 if (htab->got == NULL
2916 && !ppc_elf_create_got (abfd, info))
2919 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2922 if (htab->glink == NULL
2923 && !ppc_elf_create_glink (abfd, info))
2926 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2927 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2928 SEC_ALLOC | SEC_LINKER_CREATED);
2935 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2936 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2937 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2938 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2941 || ! bfd_set_section_alignment (abfd, s, 2))
2945 if (htab->is_vxworks
2946 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2949 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2950 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2954 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2955 if (htab->plt_type == PLT_VXWORKS)
2956 /* The VxWorks PLT is a loaded section with contents. */
2957 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2958 return bfd_set_section_flags (abfd, s, flags);
2961 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2964 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2965 struct elf_link_hash_entry *dir,
2966 struct elf_link_hash_entry *ind)
2968 struct ppc_elf_link_hash_entry *edir, *eind;
2970 edir = (struct ppc_elf_link_hash_entry *) dir;
2971 eind = (struct ppc_elf_link_hash_entry *) ind;
2973 edir->tls_mask |= eind->tls_mask;
2974 edir->has_sda_refs |= eind->has_sda_refs;
2976 /* If called to transfer flags for a weakdef during processing
2977 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2978 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2979 if (!(ELIMINATE_COPY_RELOCS
2980 && eind->elf.root.type != bfd_link_hash_indirect
2981 && edir->elf.dynamic_adjusted))
2982 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2984 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2985 edir->elf.ref_regular |= eind->elf.ref_regular;
2986 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2987 edir->elf.needs_plt |= eind->elf.needs_plt;
2988 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
2990 /* If we were called to copy over info for a weak sym, that's all. */
2991 if (eind->elf.root.type != bfd_link_hash_indirect)
2994 if (eind->dyn_relocs != NULL)
2996 if (edir->dyn_relocs != NULL)
2998 struct elf_dyn_relocs **pp;
2999 struct elf_dyn_relocs *p;
3001 /* Add reloc counts against the indirect sym to the direct sym
3002 list. Merge any entries against the same section. */
3003 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3005 struct elf_dyn_relocs *q;
3007 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3008 if (q->sec == p->sec)
3010 q->pc_count += p->pc_count;
3011 q->count += p->count;
3018 *pp = edir->dyn_relocs;
3021 edir->dyn_relocs = eind->dyn_relocs;
3022 eind->dyn_relocs = NULL;
3025 /* Copy over the GOT refcount entries that we may have already seen to
3026 the symbol which just became indirect. */
3027 edir->elf.got.refcount += eind->elf.got.refcount;
3028 eind->elf.got.refcount = 0;
3030 /* And plt entries. */
3031 if (eind->elf.plt.plist != NULL)
3033 if (edir->elf.plt.plist != NULL)
3035 struct plt_entry **entp;
3036 struct plt_entry *ent;
3038 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3040 struct plt_entry *dent;
3042 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3043 if (dent->sec == ent->sec && dent->addend == ent->addend)
3045 dent->plt.refcount += ent->plt.refcount;
3052 *entp = edir->elf.plt.plist;
3055 edir->elf.plt.plist = eind->elf.plt.plist;
3056 eind->elf.plt.plist = NULL;
3059 if (eind->elf.dynindx != -1)
3061 if (edir->elf.dynindx != -1)
3062 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3063 edir->elf.dynstr_index);
3064 edir->elf.dynindx = eind->elf.dynindx;
3065 edir->elf.dynstr_index = eind->elf.dynstr_index;
3066 eind->elf.dynindx = -1;
3067 eind->elf.dynstr_index = 0;
3071 /* Hook called by the linker routine which adds symbols from an object
3072 file. We use it to put .comm items in .sbss, and not .bss. */
3075 ppc_elf_add_symbol_hook (bfd *abfd,
3076 struct bfd_link_info *info,
3077 Elf_Internal_Sym *sym,
3078 const char **namep ATTRIBUTE_UNUSED,
3079 flagword *flagsp ATTRIBUTE_UNUSED,
3083 if (sym->st_shndx == SHN_COMMON
3084 && !info->relocatable
3085 && is_ppc_elf (info->output_bfd)
3086 && sym->st_size <= elf_gp_size (abfd))
3088 /* Common symbols less than or equal to -G nn bytes are automatically
3090 struct ppc_elf_link_hash_table *htab;
3092 htab = ppc_elf_hash_table (info);
3093 if (htab->sbss == NULL)
3095 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3097 if (!htab->elf.dynobj)
3098 htab->elf.dynobj = abfd;
3100 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3103 if (htab->sbss == NULL)
3108 *valp = sym->st_size;
3111 if ((abfd->flags & DYNAMIC) == 0
3112 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3113 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3114 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3120 create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3122 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3124 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3126 if (lsect->sym == NULL)
3128 if (lsect->sym->root.type == bfd_link_hash_new)
3129 lsect->sym->non_elf = 0;
3130 lsect->sym->ref_regular = 1;
3131 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3135 /* Create a special linker section. */
3138 ppc_elf_create_linker_section (bfd *abfd,
3139 struct bfd_link_info *info,
3141 elf_linker_section_t *lsect)
3143 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3146 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3147 | SEC_LINKER_CREATED);
3149 /* Record the first bfd that needs the special sections. */
3150 if (!htab->elf.dynobj)
3151 htab->elf.dynobj = abfd;
3153 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3157 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3161 return create_sdata_sym (info, lsect);
3164 /* Find a linker generated pointer with a given addend and type. */
3166 static elf_linker_section_pointers_t *
3167 elf_find_pointer_linker_section
3168 (elf_linker_section_pointers_t *linker_pointers,
3170 elf_linker_section_t *lsect)
3172 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3173 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3174 return linker_pointers;
3179 /* Allocate a pointer to live in a linker created section. */
3182 elf_create_pointer_linker_section (bfd *abfd,
3183 elf_linker_section_t *lsect,
3184 struct elf_link_hash_entry *h,
3185 const Elf_Internal_Rela *rel)
3187 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3188 elf_linker_section_pointers_t *linker_section_ptr;
3189 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3192 BFD_ASSERT (lsect != NULL);
3194 /* Is this a global symbol? */
3197 struct ppc_elf_link_hash_entry *eh;
3199 /* Has this symbol already been allocated? If so, our work is done. */
3200 eh = (struct ppc_elf_link_hash_entry *) h;
3201 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3206 ptr_linker_section_ptr = &eh->linker_section_pointer;
3210 BFD_ASSERT (is_ppc_elf (abfd));
3212 /* Allocation of a pointer to a local symbol. */
3213 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3215 /* Allocate a table to hold the local symbols if first time. */
3218 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3221 amt *= sizeof (elf_linker_section_pointers_t *);
3222 ptr = bfd_zalloc (abfd, amt);
3227 elf_local_ptr_offsets (abfd) = ptr;
3230 /* Has this symbol already been allocated? If so, our work is done. */
3231 if (elf_find_pointer_linker_section (ptr[r_symndx],
3236 ptr_linker_section_ptr = &ptr[r_symndx];
3239 /* Allocate space for a pointer in the linker section, and allocate
3240 a new pointer record from internal memory. */
3241 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3242 amt = sizeof (elf_linker_section_pointers_t);
3243 linker_section_ptr = bfd_alloc (abfd, amt);
3245 if (!linker_section_ptr)
3248 linker_section_ptr->next = *ptr_linker_section_ptr;
3249 linker_section_ptr->addend = rel->r_addend;
3250 linker_section_ptr->lsect = lsect;
3251 *ptr_linker_section_ptr = linker_section_ptr;
3253 linker_section_ptr->offset = lsect->section->size;
3254 lsect->section->size += 4;
3258 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3259 lsect->name, (long) linker_section_ptr->offset,
3260 (long) lsect->section->size);
3266 static struct plt_entry **
3267 update_local_sym_info (bfd *abfd,
3268 Elf_Internal_Shdr *symtab_hdr,
3269 unsigned long r_symndx,
3272 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3273 struct plt_entry **local_plt;
3274 char *local_got_tls_masks;
3276 if (local_got_refcounts == NULL)
3278 bfd_size_type size = symtab_hdr->sh_info;
3280 size *= (sizeof (*local_got_refcounts)
3281 + sizeof (*local_plt)
3282 + sizeof (*local_got_tls_masks));
3283 local_got_refcounts = bfd_zalloc (abfd, size);
3284 if (local_got_refcounts == NULL)
3286 elf_local_got_refcounts (abfd) = local_got_refcounts;
3289 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3290 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3291 local_got_tls_masks[r_symndx] |= tls_type;
3292 if (tls_type != PLT_IFUNC)
3293 local_got_refcounts[r_symndx] += 1;
3294 return local_plt + r_symndx;
3298 update_plt_info (bfd *abfd, struct plt_entry **plist,
3299 asection *sec, bfd_vma addend)
3301 struct plt_entry *ent;
3305 for (ent = *plist; ent != NULL; ent = ent->next)
3306 if (ent->sec == sec && ent->addend == addend)
3310 bfd_size_type amt = sizeof (*ent);
3311 ent = bfd_alloc (abfd, amt);
3316 ent->addend = addend;
3317 ent->plt.refcount = 0;
3320 ent->plt.refcount += 1;
3324 static struct plt_entry *
3325 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3327 struct plt_entry *ent;
3331 for (ent = *plist; ent != NULL; ent = ent->next)
3332 if (ent->sec == sec && ent->addend == addend)
3338 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3340 return (r_type == R_PPC_PLTREL24
3341 || r_type == R_PPC_LOCAL24PC
3342 || r_type == R_PPC_REL24
3343 || r_type == R_PPC_REL14
3344 || r_type == R_PPC_REL14_BRTAKEN
3345 || r_type == R_PPC_REL14_BRNTAKEN
3346 || r_type == R_PPC_ADDR24
3347 || r_type == R_PPC_ADDR14
3348 || r_type == R_PPC_ADDR14_BRTAKEN
3349 || r_type == R_PPC_ADDR14_BRNTAKEN);
3353 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3355 (*_bfd_error_handler)
3356 (_("%B: relocation %s cannot be used when making a shared object"),
3358 ppc_elf_howto_table[r_type]->name);
3359 bfd_set_error (bfd_error_bad_value);
3362 /* Look through the relocs for a section during the first phase, and
3363 allocate space in the global offset table or procedure linkage
3367 ppc_elf_check_relocs (bfd *abfd,
3368 struct bfd_link_info *info,
3370 const Elf_Internal_Rela *relocs)
3372 struct ppc_elf_link_hash_table *htab;
3373 Elf_Internal_Shdr *symtab_hdr;
3374 struct elf_link_hash_entry **sym_hashes;
3375 const Elf_Internal_Rela *rel;
3376 const Elf_Internal_Rela *rel_end;
3377 asection *got2, *sreloc;
3378 struct elf_link_hash_entry *tga;
3380 if (info->relocatable)
3383 /* Don't do anything special with non-loaded, non-alloced sections.
3384 In particular, any relocs in such sections should not affect GOT
3385 and PLT reference counting (ie. we don't allow them to create GOT
3386 or PLT entries), there's no possibility or desire to optimize TLS
3387 relocs, and there's not much point in propagating relocs to shared
3388 libs that the dynamic linker won't relocate. */
3389 if ((sec->flags & SEC_ALLOC) == 0)
3393 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3397 BFD_ASSERT (is_ppc_elf (abfd));
3399 /* Initialize howto table if not already done. */
3400 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3401 ppc_elf_howto_init ();
3403 htab = ppc_elf_hash_table (info);
3404 if (htab->glink == NULL)
3406 if (htab->elf.dynobj == NULL)
3407 htab->elf.dynobj = abfd;
3408 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3411 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3412 FALSE, FALSE, TRUE);
3413 symtab_hdr = &elf_symtab_hdr (abfd);
3414 sym_hashes = elf_sym_hashes (abfd);
3415 got2 = bfd_get_section_by_name (abfd, ".got2");
3418 rel_end = relocs + sec->reloc_count;
3419 for (rel = relocs; rel < rel_end; rel++)
3421 unsigned long r_symndx;
3422 enum elf_ppc_reloc_type r_type;
3423 struct elf_link_hash_entry *h;
3426 r_symndx = ELF32_R_SYM (rel->r_info);
3427 if (r_symndx < symtab_hdr->sh_info)
3431 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3432 while (h->root.type == bfd_link_hash_indirect
3433 || h->root.type == bfd_link_hash_warning)
3434 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3437 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3438 This shows up in particular in an R_PPC_ADDR32 in the eabi
3441 && htab->got == NULL
3442 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3444 if (htab->elf.dynobj == NULL)
3445 htab->elf.dynobj = abfd;
3446 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3448 BFD_ASSERT (h == htab->elf.hgot);
3452 r_type = ELF32_R_TYPE (rel->r_info);
3453 if (h == NULL && !htab->is_vxworks)
3455 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3460 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3462 || is_branch_reloc (r_type)))
3464 struct plt_entry **ifunc;
3467 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3472 /* STT_GNU_IFUNC symbols must have a PLT entry;
3473 In a non-pie executable even when there are
3476 if (r_type == R_PPC_PLTREL24)
3478 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3480 addend = rel->r_addend;
3482 if (!update_plt_info (abfd, ifunc, got2, addend))
3487 if (!htab->is_vxworks
3488 && is_branch_reloc (r_type)
3493 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3494 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3495 /* We have a new-style __tls_get_addr call with a marker
3499 /* Mark this section as having an old-style call. */
3500 sec->has_tls_get_addr_call = 1;
3507 /* These special tls relocs tie a call to __tls_get_addr with
3508 its parameter symbol. */
3511 case R_PPC_GOT_TLSLD16:
3512 case R_PPC_GOT_TLSLD16_LO:
3513 case R_PPC_GOT_TLSLD16_HI:
3514 case R_PPC_GOT_TLSLD16_HA:
3515 tls_type = TLS_TLS | TLS_LD;
3518 case R_PPC_GOT_TLSGD16:
3519 case R_PPC_GOT_TLSGD16_LO:
3520 case R_PPC_GOT_TLSGD16_HI:
3521 case R_PPC_GOT_TLSGD16_HA:
3522 tls_type = TLS_TLS | TLS_GD;
3525 case R_PPC_GOT_TPREL16:
3526 case R_PPC_GOT_TPREL16_LO:
3527 case R_PPC_GOT_TPREL16_HI:
3528 case R_PPC_GOT_TPREL16_HA:
3529 if (!info->executable)
3530 info->flags |= DF_STATIC_TLS;
3531 tls_type = TLS_TLS | TLS_TPREL;
3534 case R_PPC_GOT_DTPREL16:
3535 case R_PPC_GOT_DTPREL16_LO:
3536 case R_PPC_GOT_DTPREL16_HI:
3537 case R_PPC_GOT_DTPREL16_HA:
3538 tls_type = TLS_TLS | TLS_DTPREL;
3540 sec->has_tls_reloc = 1;
3543 /* GOT16 relocations */
3545 case R_PPC_GOT16_LO:
3546 case R_PPC_GOT16_HI:
3547 case R_PPC_GOT16_HA:
3548 /* This symbol requires a global offset table entry. */
3549 if (htab->got == NULL)
3551 if (htab->elf.dynobj == NULL)
3552 htab->elf.dynobj = abfd;
3553 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3558 h->got.refcount += 1;
3559 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3562 /* This is a global offset table entry for a local symbol. */
3563 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3566 /* We may also need a plt entry if the symbol turns out to be
3568 if (h != NULL && !info->shared)
3570 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3575 /* Indirect .sdata relocation. */
3576 case R_PPC_EMB_SDAI16:
3579 bad_shared_reloc (abfd, r_type);
3582 if (htab->sdata[0].section == NULL
3583 && !ppc_elf_create_linker_section (abfd, info, 0,
3586 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3591 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3592 h->non_got_ref = TRUE;
3596 /* Indirect .sdata2 relocation. */
3597 case R_PPC_EMB_SDA2I16:
3600 bad_shared_reloc (abfd, r_type);
3603 if (htab->sdata[1].section == NULL
3604 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3607 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3612 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3613 h->non_got_ref = TRUE;
3617 case R_PPC_SDAREL16:
3618 if (htab->sdata[0].sym == NULL
3619 && !create_sdata_sym (info, &htab->sdata[0]))
3623 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3624 h->non_got_ref = TRUE;
3628 case R_PPC_EMB_SDA2REL:
3631 bad_shared_reloc (abfd, r_type);
3634 if (htab->sdata[1].sym == NULL
3635 && !create_sdata_sym (info, &htab->sdata[1]))
3639 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3640 h->non_got_ref = TRUE;
3644 case R_PPC_EMB_SDA21:
3645 case R_PPC_EMB_RELSDA:
3648 bad_shared_reloc (abfd, r_type);
3651 if (htab->sdata[0].sym == NULL
3652 && !create_sdata_sym (info, &htab->sdata[0]))
3654 if (htab->sdata[1].sym == NULL
3655 && !create_sdata_sym (info, &htab->sdata[1]))
3659 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3660 h->non_got_ref = TRUE;
3664 case R_PPC_EMB_NADDR32:
3665 case R_PPC_EMB_NADDR16:
3666 case R_PPC_EMB_NADDR16_LO:
3667 case R_PPC_EMB_NADDR16_HI:
3668 case R_PPC_EMB_NADDR16_HA:
3671 bad_shared_reloc (abfd, r_type);
3675 h->non_got_ref = TRUE;
3678 case R_PPC_PLTREL24:
3683 case R_PPC_PLTREL32:
3684 case R_PPC_PLT16_LO:
3685 case R_PPC_PLT16_HI:
3686 case R_PPC_PLT16_HA:
3688 fprintf (stderr, "Reloc requires a PLT entry\n");
3690 /* This symbol requires a procedure linkage table entry. We
3691 actually build the entry in finish_dynamic_symbol,
3692 because this might be a case of linking PIC code without
3693 linking in any dynamic objects, in which case we don't
3694 need to generate a procedure linkage table after all. */
3698 /* It does not make sense to have a procedure linkage
3699 table entry for a local symbol. */
3700 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
3701 abfd, sec, rel->r_offset,
3702 ppc_elf_howto_table[r_type]->name);
3703 bfd_set_error (bfd_error_bad_value);
3710 if (r_type == R_PPC_PLTREL24)
3712 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3714 addend = rel->r_addend;
3717 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
3722 /* The following relocations don't need to propagate the
3723 relocation if linking a shared object since they are
3724 section relative. */
3726 case R_PPC_SECTOFF_LO:
3727 case R_PPC_SECTOFF_HI:
3728 case R_PPC_SECTOFF_HA:
3729 case R_PPC_DTPREL16:
3730 case R_PPC_DTPREL16_LO:
3731 case R_PPC_DTPREL16_HI:
3732 case R_PPC_DTPREL16_HA:
3737 case R_PPC_REL16_LO:
3738 case R_PPC_REL16_HI:
3739 case R_PPC_REL16_HA:
3740 ppc_elf_tdata (abfd)->has_rel16 = 1;
3743 /* These are just markers. */
3745 case R_PPC_EMB_MRKREF:
3749 case R_PPC_RELAX_PLT:
3750 case R_PPC_RELAX_PLTREL24:
3753 /* These should only appear in dynamic objects. */
3755 case R_PPC_GLOB_DAT:
3756 case R_PPC_JMP_SLOT:
3757 case R_PPC_RELATIVE:
3758 case R_PPC_IRELATIVE:
3761 /* These aren't handled yet. We'll report an error later. */
3763 case R_PPC_EMB_RELSEC16:
3764 case R_PPC_EMB_RELST_LO:
3765 case R_PPC_EMB_RELST_HI:
3766 case R_PPC_EMB_RELST_HA:
3767 case R_PPC_EMB_BIT_FLD:
3770 /* This refers only to functions defined in the shared library. */
3771 case R_PPC_LOCAL24PC:
3772 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3774 htab->plt_type = PLT_OLD;
3775 htab->old_bfd = abfd;
3779 /* This relocation describes the C++ object vtable hierarchy.
3780 Reconstruct it for later use during GC. */
3781 case R_PPC_GNU_VTINHERIT:
3782 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3786 /* This relocation describes which C++ vtable entries are actually
3787 used. Record for later use during GC. */
3788 case R_PPC_GNU_VTENTRY:
3789 BFD_ASSERT (h != NULL);
3791 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3795 /* We shouldn't really be seeing these. */
3798 case R_PPC_TPREL16_LO:
3799 case R_PPC_TPREL16_HI:
3800 case R_PPC_TPREL16_HA:
3801 if (!info->executable)
3802 info->flags |= DF_STATIC_TLS;
3806 case R_PPC_DTPMOD32:
3807 case R_PPC_DTPREL32:
3813 && (sec->flags & SEC_CODE) != 0
3815 && htab->plt_type == PLT_UNSET)
3817 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3818 the start of a function, which assembles to a REL32
3819 reference to .got2. If we detect one of these, then
3820 force the old PLT layout because the linker cannot
3821 reliably deduce the GOT pointer value needed for
3824 Elf_Internal_Sym *isym;
3826 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3831 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3834 htab->plt_type = PLT_OLD;
3835 htab->old_bfd = abfd;
3838 if (h == NULL || h == htab->elf.hgot)
3844 case R_PPC_ADDR16_LO:
3845 case R_PPC_ADDR16_HI:
3846 case R_PPC_ADDR16_HA:
3849 if (h != NULL && !info->shared)
3851 /* We may need a plt entry if the symbol turns out to be
3852 a function defined in a dynamic object. */
3853 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3856 /* We may need a copy reloc too. */
3858 h->pointer_equality_needed = 1;
3864 case R_PPC_REL14_BRTAKEN:
3865 case R_PPC_REL14_BRNTAKEN:
3868 if (h == htab->elf.hgot)
3870 if (htab->plt_type == PLT_UNSET)
3872 htab->plt_type = PLT_OLD;
3873 htab->old_bfd = abfd;
3881 case R_PPC_ADDR14_BRTAKEN:
3882 case R_PPC_ADDR14_BRNTAKEN:
3883 if (h != NULL && !info->shared)
3885 /* We may need a plt entry if the symbol turns out to be
3886 a function defined in a dynamic object. */
3888 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3894 /* If we are creating a shared library, and this is a reloc
3895 against a global symbol, or a non PC relative reloc
3896 against a local symbol, then we need to copy the reloc
3897 into the shared library. However, if we are linking with
3898 -Bsymbolic, we do not need to copy a reloc against a
3899 global symbol which is defined in an object we are
3900 including in the link (i.e., DEF_REGULAR is set). At
3901 this point we have not seen all the input files, so it is
3902 possible that DEF_REGULAR is not set now but will be set
3903 later (it is never cleared). In case of a weak definition,
3904 DEF_REGULAR may be cleared later by a strong definition in
3905 a shared library. We account for that possibility below by
3906 storing information in the dyn_relocs field of the hash
3907 table entry. A similar situation occurs when creating
3908 shared libraries and symbol visibility changes render the
3911 If on the other hand, we are creating an executable, we
3912 may need to keep relocations for symbols satisfied by a
3913 dynamic library if we manage to avoid copy relocs for the
3916 && (must_be_dyn_reloc (info, r_type)
3918 && (! info->symbolic
3919 || h->root.type == bfd_link_hash_defweak
3920 || !h->def_regular))))
3921 || (ELIMINATE_COPY_RELOCS
3924 && (h->root.type == bfd_link_hash_defweak
3925 || !h->def_regular)))
3927 struct elf_dyn_relocs *p;
3928 struct elf_dyn_relocs **rel_head;
3932 "ppc_elf_check_relocs needs to "
3933 "create relocation for %s\n",
3934 (h && h->root.root.string
3935 ? h->root.root.string : "<unknown>"));
3939 if (htab->elf.dynobj == NULL)
3940 htab->elf.dynobj = abfd;
3942 sreloc = _bfd_elf_make_dynamic_reloc_section
3943 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3949 /* If this is a global symbol, we count the number of
3950 relocations we need for this symbol. */
3953 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
3957 /* Track dynamic relocs needed for local syms too.
3958 We really need local syms available to do this
3962 Elf_Internal_Sym *isym;
3964 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3969 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3973 vpp = &elf_section_data (s)->local_dynrel;
3974 rel_head = (struct elf_dyn_relocs **) vpp;
3978 if (p == NULL || p->sec != sec)
3980 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3983 p->next = *rel_head;
3991 if (!must_be_dyn_reloc (info, r_type))
4003 /* Merge object attributes from IBFD into OBFD. Raise an error if
4004 there are conflicting attributes. */
4006 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4008 obj_attribute *in_attr, *in_attrs;
4009 obj_attribute *out_attr, *out_attrs;
4011 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4013 /* This is the first object. Copy the attributes. */
4014 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4016 /* Use the Tag_null value to indicate the attributes have been
4018 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4023 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4024 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4026 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4027 non-conflicting ones. */
4028 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4029 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4030 if (in_attr->i != out_attr->i)
4033 if (out_attr->i == 0)
4034 out_attr->i = in_attr->i;
4035 else if (in_attr->i == 0)
4037 else if (out_attr->i == 1 && in_attr->i == 2)
4039 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4040 else if (out_attr->i == 1 && in_attr->i == 3)
4042 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4044 else if (out_attr->i == 3 && in_attr->i == 1)
4046 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4048 else if (out_attr->i == 3 && in_attr->i == 2)
4050 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4052 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4054 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4055 else if (in_attr->i > 3)
4057 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4061 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4065 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4066 merge non-conflicting ones. */
4067 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4068 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4069 if (in_attr->i != out_attr->i)
4071 const char *in_abi = NULL, *out_abi = NULL;
4075 case 1: in_abi = "generic"; break;
4076 case 2: in_abi = "AltiVec"; break;
4077 case 3: in_abi = "SPE"; break;
4080 switch (out_attr->i)
4082 case 1: out_abi = "generic"; break;
4083 case 2: out_abi = "AltiVec"; break;
4084 case 3: out_abi = "SPE"; break;
4088 if (out_attr->i == 0)
4089 out_attr->i = in_attr->i;
4090 else if (in_attr->i == 0)
4092 /* For now, allow generic to transition to AltiVec or SPE
4093 without a warning. If GCC marked files with their stack
4094 alignment and used don't-care markings for files which are
4095 not affected by the vector ABI, we could warn about this
4097 else if (out_attr->i == 1)
4098 out_attr->i = in_attr->i;
4099 else if (in_attr->i == 1)
4101 else if (in_abi == NULL)
4103 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4105 else if (out_abi == NULL)
4107 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4111 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4112 ibfd, obfd, in_abi, out_abi);
4115 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4116 and merge non-conflicting ones. */
4117 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4118 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4119 if (in_attr->i != out_attr->i)
4122 if (out_attr->i == 0)
4123 out_attr->i = in_attr->i;
4124 else if (in_attr->i == 0)
4126 else if (out_attr->i == 1 && in_attr->i == 2)
4128 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4129 else if (out_attr->i == 2 && in_attr->i == 1)
4131 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4132 else if (in_attr->i > 2)
4134 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4138 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4142 /* Merge Tag_compatibility attributes and any common GNU ones. */
4143 _bfd_elf_merge_object_attributes (ibfd, obfd);
4148 /* Merge backend specific data from an object file to the output
4149 object file when linking. */
4152 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4158 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4161 /* Check if we have the same endianness. */
4162 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4165 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4168 new_flags = elf_elfheader (ibfd)->e_flags;
4169 old_flags = elf_elfheader (obfd)->e_flags;
4170 if (!elf_flags_init (obfd))
4172 /* First call, no flags set. */
4173 elf_flags_init (obfd) = TRUE;
4174 elf_elfheader (obfd)->e_flags = new_flags;
4177 /* Compatible flags are ok. */
4178 else if (new_flags == old_flags)
4181 /* Incompatible flags. */
4184 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4185 to be linked with either. */
4187 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4188 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4191 (*_bfd_error_handler)
4192 (_("%B: compiled with -mrelocatable and linked with "
4193 "modules compiled normally"), ibfd);
4195 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4196 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4199 (*_bfd_error_handler)
4200 (_("%B: compiled normally and linked with "
4201 "modules compiled with -mrelocatable"), ibfd);
4204 /* The output is -mrelocatable-lib iff both the input files are. */
4205 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4206 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4208 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4209 but each input file is either -mrelocatable or -mrelocatable-lib. */
4210 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4211 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4212 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4213 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4215 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4216 any module uses it. */
4217 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4219 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4220 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4222 /* Warn about any other mismatches. */
4223 if (new_flags != old_flags)
4226 (*_bfd_error_handler)
4227 (_("%B: uses different e_flags (0x%lx) fields "
4228 "than previous modules (0x%lx)"),
4229 ibfd, (long) new_flags, (long) old_flags);
4234 bfd_set_error (bfd_error_bad_value);
4242 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4243 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4245 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4246 struct bfd_link_info *info,
4247 enum ppc_elf_plt_type plt_style,
4250 struct ppc_elf_link_hash_table *htab;
4253 htab = ppc_elf_hash_table (info);
4255 htab->emit_stub_syms = emit_stub_syms;
4257 if (htab->plt_type == PLT_UNSET)
4259 if (plt_style == PLT_OLD)
4260 htab->plt_type = PLT_OLD;
4264 enum ppc_elf_plt_type plt_type = plt_style;
4266 /* Look through the reloc flags left by ppc_elf_check_relocs.
4267 Use the old style bss plt if a file makes plt calls
4268 without using the new relocs, and if ld isn't given
4269 --secure-plt and we never see REL16 relocs. */
4270 if (plt_type == PLT_UNSET)
4272 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4273 if (is_ppc_elf (ibfd))
4275 if (ppc_elf_tdata (ibfd)->has_rel16)
4277 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4280 htab->old_bfd = ibfd;
4284 htab->plt_type = plt_type;
4287 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4288 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"), htab->old_bfd);
4290 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4292 if (htab->plt_type == PLT_NEW)
4294 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4295 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4297 /* The new PLT is a loaded section. */
4298 if (htab->plt != NULL
4299 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4302 /* The new GOT is not executable. */
4303 if (htab->got != NULL
4304 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4309 /* Stop an unused .glink section from affecting .text alignment. */
4310 if (htab->glink != NULL
4311 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4314 return htab->plt_type == PLT_NEW;
4317 /* Return the section that should be marked against GC for a given
4321 ppc_elf_gc_mark_hook (asection *sec,
4322 struct bfd_link_info *info,
4323 Elf_Internal_Rela *rel,
4324 struct elf_link_hash_entry *h,
4325 Elf_Internal_Sym *sym)
4328 switch (ELF32_R_TYPE (rel->r_info))
4330 case R_PPC_GNU_VTINHERIT:
4331 case R_PPC_GNU_VTENTRY:
4335 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4338 /* Update the got, plt and dynamic reloc reference counts for the
4339 section being removed. */
4342 ppc_elf_gc_sweep_hook (bfd *abfd,
4343 struct bfd_link_info *info,
4345 const Elf_Internal_Rela *relocs)
4347 struct ppc_elf_link_hash_table *htab;
4348 Elf_Internal_Shdr *symtab_hdr;
4349 struct elf_link_hash_entry **sym_hashes;
4350 bfd_signed_vma *local_got_refcounts;
4351 const Elf_Internal_Rela *rel, *relend;
4354 if (info->relocatable)
4357 if ((sec->flags & SEC_ALLOC) == 0)
4360 elf_section_data (sec)->local_dynrel = NULL;
4362 htab = ppc_elf_hash_table (info);
4363 symtab_hdr = &elf_symtab_hdr (abfd);
4364 sym_hashes = elf_sym_hashes (abfd);
4365 local_got_refcounts = elf_local_got_refcounts (abfd);
4366 got2 = bfd_get_section_by_name (abfd, ".got2");
4368 relend = relocs + sec->reloc_count;
4369 for (rel = relocs; rel < relend; rel++)
4371 unsigned long r_symndx;
4372 enum elf_ppc_reloc_type r_type;
4373 struct elf_link_hash_entry *h = NULL;
4375 r_symndx = ELF32_R_SYM (rel->r_info);
4376 if (r_symndx >= symtab_hdr->sh_info)
4378 struct elf_dyn_relocs **pp, *p;
4379 struct ppc_elf_link_hash_entry *eh;
4381 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4382 while (h->root.type == bfd_link_hash_indirect
4383 || h->root.type == bfd_link_hash_warning)
4384 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4385 eh = (struct ppc_elf_link_hash_entry *) h;
4387 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4390 /* Everything must go for SEC. */
4396 r_type = ELF32_R_TYPE (rel->r_info);
4397 if (!htab->is_vxworks
4399 && local_got_refcounts != NULL
4401 || is_branch_reloc (r_type)))
4403 struct plt_entry **local_plt = (struct plt_entry **)
4404 (local_got_refcounts + symtab_hdr->sh_info);
4405 char *local_got_tls_masks = (char *)
4406 (local_plt + symtab_hdr->sh_info);
4407 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4409 struct plt_entry **ifunc = local_plt + r_symndx;
4411 struct plt_entry *ent;
4413 if (r_type == R_PPC_PLTREL24 && info->shared)
4414 addend = rel->r_addend;
4415 ent = find_plt_ent (ifunc, got2, addend);
4416 if (ent->plt.refcount > 0)
4417 ent->plt.refcount -= 1;
4424 case R_PPC_GOT_TLSLD16:
4425 case R_PPC_GOT_TLSLD16_LO:
4426 case R_PPC_GOT_TLSLD16_HI:
4427 case R_PPC_GOT_TLSLD16_HA:
4428 case R_PPC_GOT_TLSGD16:
4429 case R_PPC_GOT_TLSGD16_LO:
4430 case R_PPC_GOT_TLSGD16_HI:
4431 case R_PPC_GOT_TLSGD16_HA:
4432 case R_PPC_GOT_TPREL16:
4433 case R_PPC_GOT_TPREL16_LO:
4434 case R_PPC_GOT_TPREL16_HI:
4435 case R_PPC_GOT_TPREL16_HA:
4436 case R_PPC_GOT_DTPREL16:
4437 case R_PPC_GOT_DTPREL16_LO:
4438 case R_PPC_GOT_DTPREL16_HI:
4439 case R_PPC_GOT_DTPREL16_HA:
4441 case R_PPC_GOT16_LO:
4442 case R_PPC_GOT16_HI:
4443 case R_PPC_GOT16_HA:
4446 if (h->got.refcount > 0)
4450 struct plt_entry *ent;
4452 ent = find_plt_ent (&h->plt.plist, NULL, 0);
4453 if (ent != NULL && ent->plt.refcount > 0)
4454 ent->plt.refcount -= 1;
4457 else if (local_got_refcounts != NULL)
4459 if (local_got_refcounts[r_symndx] > 0)
4460 local_got_refcounts[r_symndx]--;
4466 case R_PPC_REL14_BRTAKEN:
4467 case R_PPC_REL14_BRNTAKEN:
4469 if (h == NULL || h == htab->elf.hgot)
4476 case R_PPC_ADDR16_LO:
4477 case R_PPC_ADDR16_HI:
4478 case R_PPC_ADDR16_HA:
4480 case R_PPC_ADDR14_BRTAKEN:
4481 case R_PPC_ADDR14_BRNTAKEN:
4488 case R_PPC_PLTREL24:
4489 case R_PPC_PLTREL32:
4490 case R_PPC_PLT16_LO:
4491 case R_PPC_PLT16_HI:
4492 case R_PPC_PLT16_HA:
4496 struct plt_entry *ent;
4498 if (r_type == R_PPC_PLTREL24 && info->shared)
4499 addend = rel->r_addend;
4500 ent = find_plt_ent (&h->plt.plist, got2, addend);
4501 if (ent != NULL && ent->plt.refcount > 0)
4502 ent->plt.refcount -= 1;
4513 /* Set plt output section type, htab->tls_get_addr, and call the
4514 generic ELF tls_setup function. */
4517 ppc_elf_tls_setup (bfd *obfd,
4518 struct bfd_link_info *info,
4519 int no_tls_get_addr_opt)
4521 struct ppc_elf_link_hash_table *htab;
4523 htab = ppc_elf_hash_table (info);
4524 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4525 FALSE, FALSE, TRUE);
4526 if (!no_tls_get_addr_opt)
4528 struct elf_link_hash_entry *opt, *tga;
4529 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
4530 FALSE, FALSE, TRUE);
4532 && (opt->root.type == bfd_link_hash_defined
4533 || opt->root.type == bfd_link_hash_defweak))
4535 /* If glibc supports an optimized __tls_get_addr call stub,
4536 signalled by the presence of __tls_get_addr_opt, and we'll
4537 be calling __tls_get_addr via a plt call stub, then
4538 make __tls_get_addr point to __tls_get_addr_opt. */
4539 tga = htab->tls_get_addr;
4540 if (htab->elf.dynamic_sections_created
4542 && (tga->type == STT_FUNC
4544 && !(SYMBOL_CALLS_LOCAL (info, tga)
4545 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
4546 && tga->root.type == bfd_link_hash_undefweak)))
4548 struct plt_entry *ent;
4549 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
4550 if (ent->plt.refcount > 0)
4554 tga->root.type = bfd_link_hash_indirect;
4555 tga->root.u.i.link = &opt->root;
4556 ppc_elf_copy_indirect_symbol (info, opt, tga);
4557 if (opt->dynindx != -1)
4559 /* Use __tls_get_addr_opt in dynamic relocations. */
4561 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4563 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
4566 htab->tls_get_addr = opt;
4571 no_tls_get_addr_opt = TRUE;
4573 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
4574 if (htab->plt_type == PLT_NEW
4575 && htab->plt != NULL
4576 && htab->plt->output_section != NULL)
4578 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4579 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4582 return _bfd_elf_tls_setup (obfd, info);
4585 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4589 branch_reloc_hash_match (const bfd *ibfd,
4590 const Elf_Internal_Rela *rel,
4591 const struct elf_link_hash_entry *hash)
4593 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4594 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4595 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4597 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
4599 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4600 struct elf_link_hash_entry *h;
4602 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4603 while (h->root.type == bfd_link_hash_indirect
4604 || h->root.type == bfd_link_hash_warning)
4605 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4612 /* Run through all the TLS relocs looking for optimization
4616 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4617 struct bfd_link_info *info)
4621 struct ppc_elf_link_hash_table *htab;
4624 if (info->relocatable || !info->executable)
4627 htab = ppc_elf_hash_table (info);
4631 /* Make two passes through the relocs. First time check that tls
4632 relocs involved in setting up a tls_get_addr call are indeed
4633 followed by such a call. If they are not, don't do any tls
4634 optimization. On the second pass twiddle tls_mask flags to
4635 notify relocate_section that optimization can be done, and
4636 adjust got and plt refcounts. */
4637 for (pass = 0; pass < 2; ++pass)
4638 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4640 Elf_Internal_Sym *locsyms = NULL;
4641 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4642 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
4644 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4645 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4647 Elf_Internal_Rela *relstart, *rel, *relend;
4648 int expecting_tls_get_addr = 0;
4650 /* Read the relocations. */
4651 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4653 if (relstart == NULL)
4656 relend = relstart + sec->reloc_count;
4657 for (rel = relstart; rel < relend; rel++)
4659 enum elf_ppc_reloc_type r_type;
4660 unsigned long r_symndx;
4661 struct elf_link_hash_entry *h = NULL;
4663 char tls_set, tls_clear;
4664 bfd_boolean is_local;
4665 bfd_signed_vma *got_count;
4667 r_symndx = ELF32_R_SYM (rel->r_info);
4668 if (r_symndx >= symtab_hdr->sh_info)
4670 struct elf_link_hash_entry **sym_hashes;
4672 sym_hashes = elf_sym_hashes (ibfd);
4673 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4674 while (h->root.type == bfd_link_hash_indirect
4675 || h->root.type == bfd_link_hash_warning)
4676 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4684 r_type = ELF32_R_TYPE (rel->r_info);
4685 /* If this section has old-style __tls_get_addr calls
4686 without marker relocs, then check that each
4687 __tls_get_addr call reloc is preceded by a reloc
4688 that conceivably belongs to the __tls_get_addr arg
4689 setup insn. If we don't find matching arg setup
4690 relocs, don't do any tls optimization. */
4692 && sec->has_tls_get_addr_call
4694 && h == htab->tls_get_addr
4695 && !expecting_tls_get_addr
4696 && is_branch_reloc (r_type))
4698 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
4699 "TLS optimization disabled\n",
4700 ibfd, sec, rel->r_offset);
4701 if (elf_section_data (sec)->relocs != relstart)
4706 expecting_tls_get_addr = 0;
4709 case R_PPC_GOT_TLSLD16:
4710 case R_PPC_GOT_TLSLD16_LO:
4711 expecting_tls_get_addr = 1;
4714 case R_PPC_GOT_TLSLD16_HI:
4715 case R_PPC_GOT_TLSLD16_HA:
4716 /* These relocs should never be against a symbol
4717 defined in a shared lib. Leave them alone if
4718 that turns out to be the case. */
4727 case R_PPC_GOT_TLSGD16:
4728 case R_PPC_GOT_TLSGD16_LO:
4729 expecting_tls_get_addr = 1;
4732 case R_PPC_GOT_TLSGD16_HI:
4733 case R_PPC_GOT_TLSGD16_HA:
4739 tls_set = TLS_TLS | TLS_TPRELGD;
4743 case R_PPC_GOT_TPREL16:
4744 case R_PPC_GOT_TPREL16_LO:
4745 case R_PPC_GOT_TPREL16_HI:
4746 case R_PPC_GOT_TPREL16_HA:
4751 tls_clear = TLS_TPREL;
4759 expecting_tls_get_addr = 2;
4770 if (!expecting_tls_get_addr
4771 || (expecting_tls_get_addr == 1
4772 && !sec->has_tls_get_addr_call))
4775 if (rel + 1 < relend
4776 && branch_reloc_hash_match (ibfd, rel + 1,
4777 htab->tls_get_addr))
4780 /* Uh oh, we didn't find the expected call. We
4781 could just mark this symbol to exclude it
4782 from tls optimization but it's safer to skip
4783 the entire optimization. */
4784 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
4785 "TLS optimization disabled\n"),
4786 ibfd, sec, rel->r_offset);
4787 if (elf_section_data (sec)->relocs != relstart)
4792 if (expecting_tls_get_addr)
4794 struct plt_entry *ent;
4798 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
4799 addend = rel[1].r_addend;
4800 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4802 if (ent != NULL && ent->plt.refcount > 0)
4803 ent->plt.refcount -= 1;
4805 if (expecting_tls_get_addr == 2)
4811 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4812 got_count = &h->got.refcount;
4816 bfd_signed_vma *lgot_refs;
4817 struct plt_entry **local_plt;
4820 if (locsyms == NULL)
4822 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4823 if (locsyms == NULL)
4824 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4825 symtab_hdr->sh_info,
4826 0, NULL, NULL, NULL);
4827 if (locsyms == NULL)
4829 if (elf_section_data (sec)->relocs != relstart)
4834 lgot_refs = elf_local_got_refcounts (ibfd);
4835 if (lgot_refs == NULL)
4837 local_plt = (struct plt_entry **)
4838 (lgot_refs + symtab_hdr->sh_info);
4839 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
4840 tls_mask = &lgot_masks[r_symndx];
4841 got_count = &lgot_refs[r_symndx];
4846 /* We managed to get rid of a got entry. */
4851 *tls_mask |= tls_set;
4852 *tls_mask &= ~tls_clear;
4855 if (elf_section_data (sec)->relocs != relstart)
4860 && (symtab_hdr->contents != (unsigned char *) locsyms))
4862 if (!info->keep_memory)
4865 symtab_hdr->contents = (unsigned char *) locsyms;
4871 /* Return true if we have dynamic relocs that apply to read-only sections. */
4874 readonly_dynrelocs (struct elf_link_hash_entry *h)
4876 struct elf_dyn_relocs *p;
4878 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4880 asection *s = p->sec->output_section;
4883 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4884 == (SEC_READONLY | SEC_ALLOC)))
4890 /* Adjust a symbol defined by a dynamic object and referenced by a
4891 regular object. The current definition is in some section of the
4892 dynamic object, but we're not including those sections. We have to
4893 change the definition to something the rest of the link can
4897 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4898 struct elf_link_hash_entry *h)
4900 struct ppc_elf_link_hash_table *htab;
4904 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4905 h->root.root.string);
4908 /* Make sure we know what is going on here. */
4909 htab = ppc_elf_hash_table (info);
4910 BFD_ASSERT (htab->elf.dynobj != NULL
4912 || h->type == STT_GNU_IFUNC
4913 || h->u.weakdef != NULL
4916 && !h->def_regular)));
4918 /* Deal with function syms. */
4919 if (h->type == STT_FUNC
4920 || h->type == STT_GNU_IFUNC
4923 /* Clear procedure linkage table information for any symbol that
4924 won't need a .plt entry. */
4925 struct plt_entry *ent;
4926 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4927 if (ent->plt.refcount > 0)
4930 || (h->type != STT_GNU_IFUNC
4931 && (SYMBOL_CALLS_LOCAL (info, h)
4932 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4933 && h->root.type == bfd_link_hash_undefweak))))
4935 /* A PLT entry is not required/allowed when:
4937 1. We are not using ld.so; because then the PLT entry
4938 can't be set up, so we can't use one. In this case,
4939 ppc_elf_adjust_dynamic_symbol won't even be called.
4941 2. GC has rendered the entry unused.
4943 3. We know for certain that a call to this symbol
4944 will go to this object, or will remain undefined. */
4945 h->plt.plist = NULL;
4950 /* After adjust_dynamic_symbol, non_got_ref set in the
4951 non-shared case means that we have allocated space in
4952 .dynbss for the symbol and thus dyn_relocs for this
4953 symbol should be discarded.
4954 If we get here we know we are making a PLT entry for this
4955 symbol, and in an executable we'd normally resolve
4956 relocations against this symbol to the PLT entry. Allow
4957 dynamic relocs if the reference is weak, and the dynamic
4958 relocs will not cause text relocation. */
4959 if (!h->ref_regular_nonweak
4961 && h->type != STT_GNU_IFUNC
4962 && !htab->is_vxworks
4963 && !ppc_elf_hash_entry (h)->has_sda_refs
4964 && !readonly_dynrelocs (h))
4970 h->plt.plist = NULL;
4972 /* If this is a weak symbol, and there is a real definition, the
4973 processor independent code will have arranged for us to see the
4974 real definition first, and we can just use the same value. */
4975 if (h->u.weakdef != NULL)
4977 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4978 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4979 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4980 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4981 if (ELIMINATE_COPY_RELOCS)
4982 h->non_got_ref = h->u.weakdef->non_got_ref;
4986 /* This is a reference to a symbol defined by a dynamic object which
4987 is not a function. */
4989 /* If we are creating a shared library, we must presume that the
4990 only references to the symbol are via the global offset table.
4991 For such cases we need not do anything here; the relocations will
4992 be handled correctly by relocate_section. */
4996 /* If there are no references to this symbol that do not use the
4997 GOT, we don't need to generate a copy reloc. */
4998 if (!h->non_got_ref)
5001 /* If we didn't find any dynamic relocs in read-only sections, then
5002 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5003 We can't do this if there are any small data relocations. This
5004 doesn't work on VxWorks, where we can not have dynamic
5005 relocations (other than copy and jump slot relocations) in an
5007 if (ELIMINATE_COPY_RELOCS
5008 && !ppc_elf_hash_entry (h)->has_sda_refs
5009 && !htab->is_vxworks
5011 && !readonly_dynrelocs (h))
5019 info->callbacks->einfo (_("%P: dynamic variable `%s' is zero size\n"),
5020 h->root.root.string);
5024 /* We must allocate the symbol in our .dynbss section, which will
5025 become part of the .bss section of the executable. There will be
5026 an entry for this symbol in the .dynsym section. The dynamic
5027 object will contain position independent code, so all references
5028 from the dynamic object to this symbol will go through the global
5029 offset table. The dynamic linker will use the .dynsym entry to
5030 determine the address it must put in the global offset table, so
5031 both the dynamic object and the regular object will refer to the
5032 same memory location for the variable.
5034 Of course, if the symbol is referenced using SDAREL relocs, we
5035 must instead allocate it in .sbss. */
5037 if (ppc_elf_hash_entry (h)->has_sda_refs)
5041 BFD_ASSERT (s != NULL);
5043 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5044 copy the initial value out of the dynamic object and into the
5045 runtime process image. We need to remember the offset into the
5046 .rela.bss section we are going to use. */
5047 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5051 if (ppc_elf_hash_entry (h)->has_sda_refs)
5052 srel = htab->relsbss;
5054 srel = htab->relbss;
5055 BFD_ASSERT (srel != NULL);
5056 srel->size += sizeof (Elf32_External_Rela);
5060 return _bfd_elf_adjust_dynamic_copy (h, s);
5063 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5064 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5065 specifying the addend on the plt relocation. For -fpic code, the sym
5066 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5067 xxxxxxxx.got2.plt_pic32.<callee>. */
5070 add_stub_sym (struct plt_entry *ent,
5071 struct elf_link_hash_entry *h,
5072 struct bfd_link_info *info)
5074 struct elf_link_hash_entry *sh;
5075 size_t len1, len2, len3;
5078 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5081 stub = ".plt_pic32.";
5083 stub = ".plt_call32.";
5085 len1 = strlen (h->root.root.string);
5086 len2 = strlen (stub);
5089 len3 = strlen (ent->sec->name);
5090 name = bfd_malloc (len1 + len2 + len3 + 9);
5093 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5095 memcpy (name + 8, ent->sec->name, len3);
5096 memcpy (name + 8 + len3, stub, len2);
5097 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5098 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5101 if (sh->root.type == bfd_link_hash_new)
5103 sh->root.type = bfd_link_hash_defined;
5104 sh->root.u.def.section = htab->glink;
5105 sh->root.u.def.value = ent->glink_offset;
5106 sh->ref_regular = 1;
5107 sh->def_regular = 1;
5108 sh->ref_regular_nonweak = 1;
5109 sh->forced_local = 1;
5115 /* Allocate NEED contiguous space in .got, and return the offset.
5116 Handles allocation of the got header when crossing 32k. */
5119 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5122 unsigned int max_before_header;
5124 if (htab->plt_type == PLT_VXWORKS)
5126 where = htab->got->size;
5127 htab->got->size += need;
5131 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5132 if (need <= htab->got_gap)
5134 where = max_before_header - htab->got_gap;
5135 htab->got_gap -= need;
5139 if (htab->got->size + need > max_before_header
5140 && htab->got->size <= max_before_header)
5142 htab->got_gap = max_before_header - htab->got->size;
5143 htab->got->size = max_before_header + htab->got_header_size;
5145 where = htab->got->size;
5146 htab->got->size += need;
5152 /* Allocate space in associated reloc sections for dynamic relocs. */
5155 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5157 struct bfd_link_info *info = inf;
5158 struct ppc_elf_link_hash_entry *eh;
5159 struct ppc_elf_link_hash_table *htab;
5160 struct elf_dyn_relocs *p;
5162 if (h->root.type == bfd_link_hash_indirect)
5165 htab = ppc_elf_hash_table (info);
5166 if (htab->elf.dynamic_sections_created
5167 || h->type == STT_GNU_IFUNC)
5169 struct plt_entry *ent;
5170 bfd_boolean doneone = FALSE;
5171 bfd_vma plt_offset = 0, glink_offset = 0;
5174 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5175 if (ent->plt.refcount > 0)
5177 /* Make sure this symbol is output as a dynamic symbol. */
5178 if (h->dynindx == -1
5181 && htab->elf.dynamic_sections_created)
5183 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5187 dyn = htab->elf.dynamic_sections_created;
5189 || h->type == STT_GNU_IFUNC
5190 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5192 asection *s = htab->plt;
5193 if (!dyn || h->dynindx == -1)
5196 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5200 plt_offset = s->size;
5203 ent->plt.offset = plt_offset;
5206 if (!doneone || info->shared)
5208 glink_offset = s->size;
5209 s->size += GLINK_ENTRY_SIZE;
5210 if (h == htab->tls_get_addr
5211 && !htab->no_tls_get_addr_opt)
5212 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5219 h->root.u.def.section = s;
5220 h->root.u.def.value = glink_offset;
5222 ent->glink_offset = glink_offset;
5224 if (htab->emit_stub_syms
5225 && !add_stub_sym (ent, h, info))
5232 /* If this is the first .plt entry, make room
5233 for the special first entry. */
5235 s->size += htab->plt_initial_entry_size;
5237 /* The PowerPC PLT is actually composed of two
5238 parts, the first part is 2 words (for a load
5239 and a jump), and then there is a remaining
5240 word available at the end. */
5241 plt_offset = (htab->plt_initial_entry_size
5242 + (htab->plt_slot_size
5244 - htab->plt_initial_entry_size)
5245 / htab->plt_entry_size)));
5247 /* If this symbol is not defined in a regular
5248 file, and we are not generating a shared
5249 library, then set the symbol to this location
5250 in the .plt. This is to avoid text
5251 relocations, and is required to make
5252 function pointers compare as equal between
5253 the normal executable and the shared library. */
5258 h->root.u.def.section = s;
5259 h->root.u.def.value = plt_offset;
5262 /* Make room for this entry. */
5263 s->size += htab->plt_entry_size;
5264 /* After the 8192nd entry, room for two entries
5266 if (htab->plt_type == PLT_OLD
5267 && (s->size - htab->plt_initial_entry_size)
5268 / htab->plt_entry_size
5269 > PLT_NUM_SINGLE_ENTRIES)
5270 s->size += htab->plt_entry_size;
5272 ent->plt.offset = plt_offset;
5275 /* We also need to make an entry in the .rela.plt section. */
5278 if (!htab->elf.dynamic_sections_created
5279 || h->dynindx == -1)
5280 htab->reliplt->size += sizeof (Elf32_External_Rela);
5283 htab->relplt->size += sizeof (Elf32_External_Rela);
5285 if (htab->plt_type == PLT_VXWORKS)
5287 /* Allocate space for the unloaded relocations. */
5289 && htab->elf.dynamic_sections_created)
5292 == (bfd_vma) htab->plt_initial_entry_size)
5294 htab->srelplt2->size
5295 += (sizeof (Elf32_External_Rela)
5296 * VXWORKS_PLTRESOLVE_RELOCS);
5299 htab->srelplt2->size
5300 += (sizeof (Elf32_External_Rela)
5301 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5304 /* Every PLT entry has an associated GOT entry in
5306 htab->sgotplt->size += 4;
5313 ent->plt.offset = (bfd_vma) -1;
5316 ent->plt.offset = (bfd_vma) -1;
5320 h->plt.plist = NULL;
5326 h->plt.plist = NULL;
5330 eh = (struct ppc_elf_link_hash_entry *) h;
5331 if (eh->elf.got.refcount > 0)
5336 /* Make sure this symbol is output as a dynamic symbol. */
5337 if (eh->elf.dynindx == -1
5338 && !eh->elf.forced_local
5339 && eh->elf.type != STT_GNU_IFUNC
5340 && htab->elf.dynamic_sections_created)
5342 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5347 if ((eh->tls_mask & TLS_TLS) != 0)
5349 if ((eh->tls_mask & TLS_LD) != 0)
5351 if (!eh->elf.def_dynamic)
5352 /* We'll just use htab->tlsld_got.offset. This should
5353 always be the case. It's a little odd if we have
5354 a local dynamic reloc against a non-local symbol. */
5355 htab->tlsld_got.refcount += 1;
5359 if ((eh->tls_mask & TLS_GD) != 0)
5361 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5363 if ((eh->tls_mask & TLS_DTPREL) != 0)
5369 eh->elf.got.offset = (bfd_vma) -1;
5372 eh->elf.got.offset = allocate_got (htab, need);
5373 dyn = htab->elf.dynamic_sections_created;
5375 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5376 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5377 || eh->elf.root.type != bfd_link_hash_undefweak))
5379 asection *rsec = htab->relgot;
5380 /* All the entries we allocated need relocs.
5381 Except LD only needs one. */
5382 if ((eh->tls_mask & TLS_LD) != 0
5383 && eh->elf.def_dynamic)
5385 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5390 eh->elf.got.offset = (bfd_vma) -1;
5392 if (eh->dyn_relocs == NULL
5393 || !htab->elf.dynamic_sections_created)
5396 /* In the shared -Bsymbolic case, discard space allocated for
5397 dynamic pc-relative relocs against symbols which turn out to be
5398 defined in regular objects. For the normal shared case, discard
5399 space for relocs that have become local due to symbol visibility
5404 /* Relocs that use pc_count are those that appear on a call insn,
5405 or certain REL relocs (see must_be_dyn_reloc) that can be
5406 generated via assembly. We want calls to protected symbols to
5407 resolve directly to the function rather than going via the plt.
5408 If people want function pointer comparisons to work as expected
5409 then they should avoid writing weird assembly. */
5410 if (SYMBOL_CALLS_LOCAL (info, h))
5412 struct elf_dyn_relocs **pp;
5414 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5416 p->count -= p->pc_count;
5425 if (htab->is_vxworks)
5427 struct elf_dyn_relocs **pp;
5429 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5431 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5438 /* Discard relocs on undefined symbols that must be local. */
5439 if (eh->dyn_relocs != NULL
5440 && h->root.type == bfd_link_hash_undefined
5441 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5442 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5443 eh->dyn_relocs = NULL;
5445 /* Also discard relocs on undefined weak syms with non-default
5447 if (eh->dyn_relocs != NULL
5448 && h->root.type == bfd_link_hash_undefweak)
5450 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5451 eh->dyn_relocs = NULL;
5453 /* Make sure undefined weak symbols are output as a dynamic
5455 else if (h->dynindx == -1
5459 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5464 else if (ELIMINATE_COPY_RELOCS)
5466 /* For the non-shared case, discard space for relocs against
5467 symbols which turn out to need copy relocs or are not
5473 /* Make sure this symbol is output as a dynamic symbol.
5474 Undefined weak syms won't yet be marked as dynamic. */
5475 if (h->dynindx == -1
5476 && !h->forced_local)
5478 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5482 /* If that succeeded, we know we'll be keeping all the
5484 if (h->dynindx != -1)
5488 eh->dyn_relocs = NULL;
5493 /* Finally, allocate space. */
5494 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5496 asection *sreloc = elf_section_data (p->sec)->sreloc;
5497 if (!htab->elf.dynamic_sections_created)
5498 sreloc = htab->reliplt;
5499 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5505 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5506 read-only sections. */
5509 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5511 if (h->root.type == bfd_link_hash_indirect)
5514 if (readonly_dynrelocs (h))
5516 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5518 /* Not an error, just cut short the traversal. */
5524 static const unsigned char glink_eh_frame_cie[] =
5526 0, 0, 0, 16, /* length. */
5527 0, 0, 0, 0, /* id. */
5528 1, /* CIE version. */
5529 'z', 'R', 0, /* Augmentation string. */
5530 4, /* Code alignment. */
5531 0x7c, /* Data alignment. */
5533 1, /* Augmentation size. */
5534 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
5535 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
5538 /* Set the sizes of the dynamic sections. */
5541 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5542 struct bfd_link_info *info)
5544 struct ppc_elf_link_hash_table *htab;
5550 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5553 htab = ppc_elf_hash_table (info);
5554 BFD_ASSERT (htab->elf.dynobj != NULL);
5556 if (elf_hash_table (info)->dynamic_sections_created)
5558 /* Set the contents of the .interp section to the interpreter. */
5559 if (info->executable)
5561 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5562 BFD_ASSERT (s != NULL);
5563 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5564 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5568 if (htab->plt_type == PLT_OLD)
5569 htab->got_header_size = 16;
5570 else if (htab->plt_type == PLT_NEW)
5571 htab->got_header_size = 12;
5573 /* Set up .got offsets for local syms, and space for local dynamic
5575 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5577 bfd_signed_vma *local_got;
5578 bfd_signed_vma *end_local_got;
5579 struct plt_entry **local_plt;
5580 struct plt_entry **end_local_plt;
5582 bfd_size_type locsymcount;
5583 Elf_Internal_Shdr *symtab_hdr;
5585 if (!is_ppc_elf (ibfd))
5588 for (s = ibfd->sections; s != NULL; s = s->next)
5590 struct elf_dyn_relocs *p;
5592 for (p = ((struct elf_dyn_relocs *)
5593 elf_section_data (s)->local_dynrel);
5597 if (!bfd_is_abs_section (p->sec)
5598 && bfd_is_abs_section (p->sec->output_section))
5600 /* Input section has been discarded, either because
5601 it is a copy of a linkonce section or due to
5602 linker script /DISCARD/, so we'll be discarding
5605 else if (htab->is_vxworks
5606 && strcmp (p->sec->output_section->name,
5609 /* Relocations in vxworks .tls_vars sections are
5610 handled specially by the loader. */
5612 else if (p->count != 0)
5614 asection *sreloc = elf_section_data (p->sec)->sreloc;
5615 if (!htab->elf.dynamic_sections_created)
5616 sreloc = htab->reliplt;
5617 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5618 if ((p->sec->output_section->flags
5619 & (SEC_READONLY | SEC_ALLOC))
5620 == (SEC_READONLY | SEC_ALLOC))
5621 info->flags |= DF_TEXTREL;
5626 local_got = elf_local_got_refcounts (ibfd);
5630 symtab_hdr = &elf_symtab_hdr (ibfd);
5631 locsymcount = symtab_hdr->sh_info;
5632 end_local_got = local_got + locsymcount;
5633 local_plt = (struct plt_entry **) end_local_got;
5634 end_local_plt = local_plt + locsymcount;
5635 lgot_masks = (char *) end_local_plt;
5637 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5640 unsigned int need = 0;
5641 if ((*lgot_masks & TLS_TLS) != 0)
5643 if ((*lgot_masks & TLS_GD) != 0)
5645 if ((*lgot_masks & TLS_LD) != 0)
5646 htab->tlsld_got.refcount += 1;
5647 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5649 if ((*lgot_masks & TLS_DTPREL) != 0)
5655 *local_got = (bfd_vma) -1;
5658 *local_got = allocate_got (htab, need);
5660 htab->relgot->size += (need
5661 * (sizeof (Elf32_External_Rela) / 4));
5665 *local_got = (bfd_vma) -1;
5667 if (htab->is_vxworks)
5670 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5671 for (; local_plt < end_local_plt; ++local_plt)
5673 struct plt_entry *ent;
5674 bfd_boolean doneone = FALSE;
5675 bfd_vma plt_offset = 0, glink_offset = 0;
5677 for (ent = *local_plt; ent != NULL; ent = ent->next)
5678 if (ent->plt.refcount > 0)
5684 plt_offset = s->size;
5687 ent->plt.offset = plt_offset;
5690 if (!doneone || info->shared)
5692 glink_offset = s->size;
5693 s->size += GLINK_ENTRY_SIZE;
5695 ent->glink_offset = glink_offset;
5699 htab->reliplt->size += sizeof (Elf32_External_Rela);
5704 ent->plt.offset = (bfd_vma) -1;
5708 /* Allocate space for global sym dynamic relocs. */
5709 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5711 if (htab->tlsld_got.refcount > 0)
5713 htab->tlsld_got.offset = allocate_got (htab, 8);
5715 htab->relgot->size += sizeof (Elf32_External_Rela);
5718 htab->tlsld_got.offset = (bfd_vma) -1;
5720 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5722 unsigned int g_o_t = 32768;
5724 /* If we haven't allocated the header, do so now. When we get here,
5725 for old plt/got the got size will be 0 to 32764 (not allocated),
5726 or 32780 to 65536 (header allocated). For new plt/got, the
5727 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5728 if (htab->got->size <= 32768)
5730 g_o_t = htab->got->size;
5731 if (htab->plt_type == PLT_OLD)
5733 htab->got->size += htab->got_header_size;
5736 htab->elf.hgot->root.u.def.value = g_o_t;
5740 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
5742 && !(sda->root.type == bfd_link_hash_defined
5743 || sda->root.type == bfd_link_hash_defweak))
5745 sda->root.type = bfd_link_hash_defined;
5746 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
5747 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
5751 if (htab->glink != NULL
5752 && htab->glink->size != 0
5753 && htab->elf.dynamic_sections_created)
5755 htab->glink_pltresolve = htab->glink->size;
5756 /* Space for the branch table. */
5757 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5758 /* Pad out to align the start of PLTresolve. */
5759 htab->glink->size += -htab->glink->size & 15;
5760 htab->glink->size += GLINK_PLTRESOLVE;
5762 if (htab->emit_stub_syms)
5764 struct elf_link_hash_entry *sh;
5765 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5766 TRUE, FALSE, FALSE);
5769 if (sh->root.type == bfd_link_hash_new)
5771 sh->root.type = bfd_link_hash_defined;
5772 sh->root.u.def.section = htab->glink;
5773 sh->root.u.def.value = htab->glink_pltresolve;
5774 sh->ref_regular = 1;
5775 sh->def_regular = 1;
5776 sh->ref_regular_nonweak = 1;
5777 sh->forced_local = 1;
5780 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5781 TRUE, FALSE, FALSE);
5784 if (sh->root.type == bfd_link_hash_new)
5786 sh->root.type = bfd_link_hash_defined;
5787 sh->root.u.def.section = htab->glink;
5788 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5789 sh->ref_regular = 1;
5790 sh->def_regular = 1;
5791 sh->ref_regular_nonweak = 1;
5792 sh->forced_local = 1;
5798 if (htab->glink != NULL
5799 && htab->glink->size != 0
5800 && htab->glink_eh_frame != NULL
5801 && !bfd_is_abs_section (htab->glink_eh_frame->output_section))
5803 s = htab->glink_eh_frame;
5804 s->size = sizeof (glink_eh_frame_cie) + 20;
5808 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
5813 /* We've now determined the sizes of the various dynamic sections.
5814 Allocate memory for them. */
5816 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5818 bfd_boolean strip_section = TRUE;
5820 if ((s->flags & SEC_LINKER_CREATED) == 0)
5826 /* We'd like to strip these sections if they aren't needed, but if
5827 we've exported dynamic symbols from them we must leave them.
5828 It's too late to tell BFD to get rid of the symbols. */
5829 if (htab->elf.hplt != NULL)
5830 strip_section = FALSE;
5831 /* Strip this section if we don't need it; see the
5834 else if (s == htab->iplt
5836 || s == htab->glink_eh_frame
5837 || s == htab->sgotplt
5839 || s == htab->dynbss
5840 || s == htab->dynsbss
5841 || s == htab->sdata[0].section
5842 || s == htab->sdata[1].section)
5844 /* Strip these too. */
5846 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5850 /* Remember whether there are any relocation sections. */
5853 /* We use the reloc_count field as a counter if we need
5854 to copy relocs into the output file. */
5860 /* It's not one of our sections, so don't allocate space. */
5864 if (s->size == 0 && strip_section)
5866 /* If we don't need this section, strip it from the
5867 output file. This is mostly to handle .rela.bss and
5868 .rela.plt. We must create both sections in
5869 create_dynamic_sections, because they must be created
5870 before the linker maps input sections to output
5871 sections. The linker does that before
5872 adjust_dynamic_symbol is called, and it is that
5873 function which decides whether anything needs to go
5874 into these sections. */
5875 s->flags |= SEC_EXCLUDE;
5879 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5882 /* Allocate memory for the section contents. */
5883 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5884 if (s->contents == NULL)
5888 if (htab->elf.dynamic_sections_created)
5890 /* Add some entries to the .dynamic section. We fill in the
5891 values later, in ppc_elf_finish_dynamic_sections, but we
5892 must add the entries now so that we get the correct size for
5893 the .dynamic section. The DT_DEBUG entry is filled in by the
5894 dynamic linker and used by the debugger. */
5895 #define add_dynamic_entry(TAG, VAL) \
5896 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5898 if (info->executable)
5900 if (!add_dynamic_entry (DT_DEBUG, 0))
5904 if (htab->plt != NULL && htab->plt->size != 0)
5906 if (!add_dynamic_entry (DT_PLTGOT, 0)
5907 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5908 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5909 || !add_dynamic_entry (DT_JMPREL, 0))
5913 if (htab->glink != NULL && htab->glink->size != 0)
5915 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5917 if (!htab->no_tls_get_addr_opt
5918 && htab->tls_get_addr != NULL
5919 && htab->tls_get_addr->plt.plist != NULL
5920 && !add_dynamic_entry (DT_PPC_TLSOPT, 0))
5926 if (!add_dynamic_entry (DT_RELA, 0)
5927 || !add_dynamic_entry (DT_RELASZ, 0)
5928 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5932 /* If any dynamic relocs apply to a read-only section, then we
5933 need a DT_TEXTREL entry. */
5934 if ((info->flags & DF_TEXTREL) == 0)
5935 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5938 if ((info->flags & DF_TEXTREL) != 0)
5940 if (!add_dynamic_entry (DT_TEXTREL, 0))
5943 if (htab->is_vxworks
5944 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5947 #undef add_dynamic_entry
5952 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5955 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5957 if (h->plt.plist != NULL
5959 && (!h->pointer_equality_needed
5960 || !h->ref_regular_nonweak))
5963 return _bfd_elf_hash_symbol (h);
5966 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5968 /* Relaxation trampolines. r12 is available for clobbering (r11, is
5969 used for some functions that are allowed to break the ABI). */
5970 static const int shared_stub_entry[] =
5972 0x7c0802a6, /* mflr 0 */
5973 0x429f0005, /* bcl 20, 31, .Lxxx */
5974 0x7d8802a6, /* mflr 12 */
5975 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
5976 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
5977 0x7c0803a6, /* mtlr 0 */
5978 0x7d8903a6, /* mtctr 12 */
5979 0x4e800420, /* bctr */
5982 static const int stub_entry[] =
5984 0x3d800000, /* lis 12,xxx@ha */
5985 0x398c0000, /* addi 12,12,xxx@l */
5986 0x7d8903a6, /* mtctr 12 */
5987 0x4e800420, /* bctr */
5991 ppc_elf_relax_section (bfd *abfd,
5993 struct bfd_link_info *link_info,
5998 struct one_fixup *next;
6000 /* Final link, can use the symbol offset. For a
6001 relocatable link we use the symbol's index. */
6006 Elf_Internal_Shdr *symtab_hdr;
6007 bfd_byte *contents = NULL;
6008 Elf_Internal_Sym *isymbuf = NULL;
6009 Elf_Internal_Rela *internal_relocs = NULL;
6010 Elf_Internal_Rela *irel, *irelend;
6011 struct one_fixup *fixups = NULL;
6012 unsigned changes = 0;
6013 struct ppc_elf_link_hash_table *htab;
6014 bfd_size_type trampoff;
6016 bfd_boolean maybe_pasted;
6020 /* Nothing to do if there are no relocations, and no need to do
6021 anything with non-alloc or non-code sections. */
6022 if ((isec->flags & SEC_ALLOC) == 0
6023 || (isec->flags & SEC_CODE) == 0
6024 || (isec->flags & SEC_RELOC) == 0
6025 || isec->reloc_count == 0)
6028 /* We cannot represent the required PIC relocs in the output, so don't
6029 do anything. The linker doesn't support mixing -shared and -r
6031 if (link_info->relocatable && link_info->shared)
6034 trampoff = (isec->size + 3) & (bfd_vma) -4;
6035 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6036 || strcmp (isec->output_section->name, ".fini") == 0);
6037 /* Space for a branch around any trampolines. */
6041 symtab_hdr = &elf_symtab_hdr (abfd);
6043 /* Get a copy of the native relocations. */
6044 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6045 link_info->keep_memory);
6046 if (internal_relocs == NULL)
6049 htab = ppc_elf_hash_table (link_info);
6050 got2 = bfd_get_section_by_name (abfd, ".got2");
6052 irelend = internal_relocs + isec->reloc_count;
6053 for (irel = internal_relocs; irel < irelend; irel++)
6055 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6058 struct one_fixup *f;
6059 size_t insn_offset = 0;
6060 bfd_vma max_branch_offset, val;
6063 struct elf_link_hash_entry *h;
6064 struct plt_entry **plist;
6065 unsigned char sym_type;
6070 case R_PPC_LOCAL24PC:
6071 case R_PPC_PLTREL24:
6072 max_branch_offset = 1 << 25;
6076 case R_PPC_REL14_BRTAKEN:
6077 case R_PPC_REL14_BRNTAKEN:
6078 max_branch_offset = 1 << 15;
6085 /* Get the value of the symbol referred to by the reloc. */
6087 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6089 /* A local symbol. */
6090 Elf_Internal_Sym *isym;
6092 /* Read this BFD's local symbols. */
6093 if (isymbuf == NULL)
6095 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6096 if (isymbuf == NULL)
6097 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6098 symtab_hdr->sh_info, 0,
6103 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6104 if (isym->st_shndx == SHN_UNDEF)
6105 tsec = bfd_und_section_ptr;
6106 else if (isym->st_shndx == SHN_ABS)
6107 tsec = bfd_abs_section_ptr;
6108 else if (isym->st_shndx == SHN_COMMON)
6109 tsec = bfd_com_section_ptr;
6111 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6113 toff = isym->st_value;
6114 sym_type = ELF_ST_TYPE (isym->st_info);
6118 /* Global symbol handling. */
6121 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6122 h = elf_sym_hashes (abfd)[indx];
6124 while (h->root.type == bfd_link_hash_indirect
6125 || h->root.type == bfd_link_hash_warning)
6126 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6128 if (h->root.type == bfd_link_hash_defined
6129 || h->root.type == bfd_link_hash_defweak)
6131 tsec = h->root.u.def.section;
6132 toff = h->root.u.def.value;
6134 else if (h->root.type == bfd_link_hash_undefined
6135 || h->root.type == bfd_link_hash_undefweak)
6137 tsec = bfd_und_section_ptr;
6138 toff = link_info->relocatable ? indx : 0;
6146 /* The condition here under which we call find_plt_ent must
6147 match that in relocate_section. If we call find_plt_ent here
6148 but not in relocate_section, or vice versa, then the branch
6149 destination used here may be incorrect. */
6153 /* We know is_branch_reloc (r_type) is true. */
6154 if (h->type == STT_GNU_IFUNC
6155 || r_type == R_PPC_PLTREL24)
6156 plist = &h->plt.plist;
6158 else if (sym_type == STT_GNU_IFUNC
6159 && elf_local_got_offsets (abfd) != NULL)
6161 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6162 struct plt_entry **local_plt = (struct plt_entry **)
6163 (local_got_offsets + symtab_hdr->sh_info);
6164 plist = local_plt + ELF32_R_SYM (irel->r_info);
6169 struct plt_entry *ent;
6171 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6172 addend = irel->r_addend;
6173 ent = find_plt_ent (plist, got2, addend);
6176 if (htab->plt_type == PLT_NEW
6178 || !htab->elf.dynamic_sections_created
6179 || h->dynindx == -1)
6182 toff = ent->glink_offset;
6187 toff = ent->plt.offset;
6192 /* If the branch and target are in the same section, you have
6193 no hope of adding stubs. We'll error out later should the
6198 /* There probably isn't any reason to handle symbols in
6199 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6200 attribute for a code section, and we are only looking at
6201 branches. However, implement it correctly here as a
6202 reference for other target relax_section functions. */
6203 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6205 /* At this stage in linking, no SEC_MERGE symbol has been
6206 adjusted, so all references to such symbols need to be
6207 passed through _bfd_merged_section_offset. (Later, in
6208 relocate_section, all SEC_MERGE symbols *except* for
6209 section symbols have been adjusted.)
6211 gas may reduce relocations against symbols in SEC_MERGE
6212 sections to a relocation against the section symbol when
6213 the original addend was zero. When the reloc is against
6214 a section symbol we should include the addend in the
6215 offset passed to _bfd_merged_section_offset, since the
6216 location of interest is the original symbol. On the
6217 other hand, an access to "sym+addend" where "sym" is not
6218 a section symbol should not include the addend; Such an
6219 access is presumed to be an offset from "sym"; The
6220 location of interest is just "sym". */
6221 if (sym_type == STT_SECTION)
6222 toff += irel->r_addend;
6224 toff = _bfd_merged_section_offset (abfd, &tsec,
6225 elf_section_data (tsec)->sec_info,
6228 if (sym_type != STT_SECTION)
6229 toff += irel->r_addend;
6231 /* PLTREL24 addends are special. */
6232 else if (r_type != R_PPC_PLTREL24)
6233 toff += irel->r_addend;
6235 /* Attempted -shared link of non-pic code loses. */
6236 if (tsec->output_section == NULL)
6239 roff = irel->r_offset;
6241 /* If the branch is in range, no need to do anything. */
6242 if (tsec != bfd_und_section_ptr
6243 && (!link_info->relocatable
6244 /* A relocatable link may have sections moved during
6245 final link, so do not presume they remain in range. */
6246 || tsec->output_section == isec->output_section))
6248 bfd_vma symaddr, reladdr;
6250 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6251 reladdr = isec->output_section->vma + isec->output_offset + roff;
6252 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6256 /* Look for an existing fixup to this address. */
6257 for (f = fixups; f ; f = f->next)
6258 if (f->tsec == tsec && f->toff == toff)
6264 unsigned long stub_rtype;
6266 val = trampoff - roff;
6267 if (val >= max_branch_offset)
6268 /* Oh dear, we can't reach a trampoline. Don't try to add
6269 one. We'll report an error later. */
6272 if (link_info->shared)
6274 size = 4 * ARRAY_SIZE (shared_stub_entry);
6279 size = 4 * ARRAY_SIZE (stub_entry);
6282 stub_rtype = R_PPC_RELAX;
6283 if (tsec == htab->plt
6284 || tsec == htab->glink)
6286 stub_rtype = R_PPC_RELAX_PLT;
6287 if (r_type == R_PPC_PLTREL24)
6288 stub_rtype = R_PPC_RELAX_PLTREL24;
6291 /* Hijack the old relocation. Since we need two
6292 relocations for this use a "composite" reloc. */
6293 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6295 irel->r_offset = trampoff + insn_offset;
6296 if (r_type == R_PPC_PLTREL24
6297 && stub_rtype != R_PPC_RELAX_PLTREL24)
6300 /* Record the fixup so we don't do it again this section. */
6301 f = bfd_malloc (sizeof (*f));
6305 f->trampoff = trampoff;
6313 val = f->trampoff - roff;
6314 if (val >= max_branch_offset)
6317 /* Nop out the reloc, since we're finalizing things here. */
6318 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6321 /* Get the section contents. */
6322 if (contents == NULL)
6324 /* Get cached copy if it exists. */
6325 if (elf_section_data (isec)->this_hdr.contents != NULL)
6326 contents = elf_section_data (isec)->this_hdr.contents;
6329 /* Go get them off disk. */
6330 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6335 /* Fix up the existing branch to hit the trampoline. */
6336 hit_addr = contents + roff;
6340 case R_PPC_LOCAL24PC:
6341 case R_PPC_PLTREL24:
6342 t0 = bfd_get_32 (abfd, hit_addr);
6344 t0 |= val & 0x3fffffc;
6345 bfd_put_32 (abfd, t0, hit_addr);
6349 case R_PPC_REL14_BRTAKEN:
6350 case R_PPC_REL14_BRNTAKEN:
6351 t0 = bfd_get_32 (abfd, hit_addr);
6354 bfd_put_32 (abfd, t0, hit_addr);
6359 /* Write out the trampolines. */
6368 struct one_fixup *f = fixups;
6369 fixups = fixups->next;
6374 contents = bfd_realloc_or_free (contents, trampoff);
6375 if (contents == NULL)
6378 isec->size = (isec->size + 3) & (bfd_vma) -4;
6379 dest = contents + isec->size;
6380 /* Branch around the trampolines. */
6383 bfd_vma val = B + trampoff - isec->size;
6384 bfd_put_32 (abfd, val, dest);
6387 isec->size = trampoff;
6389 if (link_info->shared)
6391 stub = shared_stub_entry;
6392 size = ARRAY_SIZE (shared_stub_entry);
6397 size = ARRAY_SIZE (stub_entry);
6401 while (dest < contents + trampoff)
6403 bfd_put_32 (abfd, stub[i], dest);
6409 BFD_ASSERT (i == 0);
6413 && symtab_hdr->contents != (unsigned char *) isymbuf)
6415 if (! link_info->keep_memory)
6419 /* Cache the symbols for elf_link_input_bfd. */
6420 symtab_hdr->contents = (unsigned char *) isymbuf;
6424 if (contents != NULL
6425 && elf_section_data (isec)->this_hdr.contents != contents)
6427 if (!changes && !link_info->keep_memory)
6431 /* Cache the section contents for elf_link_input_bfd. */
6432 elf_section_data (isec)->this_hdr.contents = contents;
6438 /* Append sufficient NOP relocs so we can write out relocation
6439 information for the trampolines. */
6440 Elf_Internal_Shdr *rel_hdr;
6441 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6442 * sizeof (*new_relocs));
6447 memcpy (new_relocs, internal_relocs,
6448 isec->reloc_count * sizeof (*new_relocs));
6449 for (ix = changes; ix--;)
6451 irel = new_relocs + ix + isec->reloc_count;
6453 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6455 if (internal_relocs != elf_section_data (isec)->relocs)
6456 free (internal_relocs);
6457 elf_section_data (isec)->relocs = new_relocs;
6458 isec->reloc_count += changes;
6459 rel_hdr = _bfd_elf_single_rel_hdr (isec);
6460 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
6462 else if (elf_section_data (isec)->relocs != internal_relocs)
6463 free (internal_relocs);
6465 *again = changes != 0;
6466 if (!*again && link_info->relocatable)
6468 /* Convert the internal relax relocs to external form. */
6469 for (irel = internal_relocs; irel < irelend; irel++)
6470 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
6472 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6474 /* Rewrite the reloc and convert one of the trailing nop
6475 relocs to describe this relocation. */
6476 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6477 /* The relocs are at the bottom 2 bytes */
6478 irel[0].r_offset += 2;
6479 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6480 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6481 irel[1].r_offset += 4;
6482 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6490 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6492 if (contents != NULL
6493 && elf_section_data (isec)->this_hdr.contents != contents)
6495 if (internal_relocs != NULL
6496 && elf_section_data (isec)->relocs != internal_relocs)
6497 free (internal_relocs);
6501 /* What to do when ld finds relocations against symbols defined in
6502 discarded sections. */
6505 ppc_elf_action_discarded (asection *sec)
6507 if (strcmp (".fixup", sec->name) == 0)
6510 if (strcmp (".got2", sec->name) == 0)
6513 return _bfd_elf_default_action_discarded (sec);
6516 /* Fill in the address for a pointer generated in a linker section. */
6519 elf_finish_pointer_linker_section (bfd *input_bfd,
6520 elf_linker_section_t *lsect,
6521 struct elf_link_hash_entry *h,
6523 const Elf_Internal_Rela *rel)
6525 elf_linker_section_pointers_t *linker_section_ptr;
6527 BFD_ASSERT (lsect != NULL);
6531 /* Handle global symbol. */
6532 struct ppc_elf_link_hash_entry *eh;
6534 eh = (struct ppc_elf_link_hash_entry *) h;
6535 BFD_ASSERT (eh->elf.def_regular);
6536 linker_section_ptr = eh->linker_section_pointer;
6540 /* Handle local symbol. */
6541 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6543 BFD_ASSERT (is_ppc_elf (input_bfd));
6544 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6545 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6548 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6551 BFD_ASSERT (linker_section_ptr != NULL);
6553 /* Offset will always be a multiple of four, so use the bottom bit
6554 as a "written" flag. */
6555 if ((linker_section_ptr->offset & 1) == 0)
6557 bfd_put_32 (lsect->section->owner,
6558 relocation + linker_section_ptr->addend,
6559 lsect->section->contents + linker_section_ptr->offset);
6560 linker_section_ptr->offset += 1;
6563 relocation = (lsect->section->output_section->vma
6564 + lsect->section->output_offset
6565 + linker_section_ptr->offset - 1
6566 - SYM_VAL (lsect->sym));
6570 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6571 lsect->name, (long) relocation, (long) relocation);
6577 #define PPC_LO(v) ((v) & 0xffff)
6578 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6579 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6582 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
6583 struct bfd_link_info *info)
6585 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6586 bfd *output_bfd = info->output_bfd;
6589 plt = ((ent->plt.offset & ~1)
6590 + plt_sec->output_section->vma
6591 + plt_sec->output_offset);
6597 if (ent->addend >= 32768)
6599 + ent->sec->output_section->vma
6600 + ent->sec->output_offset);
6601 else if (htab->elf.hgot != NULL)
6602 got = SYM_VAL (htab->elf.hgot);
6606 if (plt + 0x8000 < 0x10000)
6608 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6610 bfd_put_32 (output_bfd, MTCTR_11, p);
6612 bfd_put_32 (output_bfd, BCTR, p);
6614 bfd_put_32 (output_bfd, NOP, p);
6619 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6621 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6623 bfd_put_32 (output_bfd, MTCTR_11, p);
6625 bfd_put_32 (output_bfd, BCTR, p);
6631 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6633 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6635 bfd_put_32 (output_bfd, MTCTR_11, p);
6637 bfd_put_32 (output_bfd, BCTR, p);
6642 /* Return true if symbol is defined statically. */
6645 is_static_defined (struct elf_link_hash_entry *h)
6647 return ((h->root.type == bfd_link_hash_defined
6648 || h->root.type == bfd_link_hash_defweak)
6649 && h->root.u.def.section != NULL
6650 && h->root.u.def.section->output_section != NULL);
6653 /* If INSN is an opcode that may be used with an @tls operand, return
6654 the transformed insn for TLS optimisation, otherwise return 0. If
6655 REG is non-zero only match an insn with RB or RA equal to REG. */
6658 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
6662 if ((insn & (0x3f << 26)) != 31 << 26)
6665 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
6666 rtra = insn & ((1 << 26) - (1 << 16));
6667 else if (((insn >> 16) & 0x1f) == reg)
6668 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
6672 if ((insn & (0x3ff << 1)) == 266 << 1)
6675 else if ((insn & (0x1f << 1)) == 23 << 1
6676 && ((insn & (0x1f << 6)) < 14 << 6
6677 || ((insn & (0x1f << 6)) >= 16 << 6
6678 && (insn & (0x1f << 6)) < 24 << 6)))
6679 /* load and store indexed -> dform. */
6680 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
6681 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
6682 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6683 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
6684 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
6686 insn = (58 << 26) | 2;
6693 /* If INSN is an opcode that may be used with an @tprel operand, return
6694 the transformed insn for an undefined weak symbol, ie. with the
6695 thread pointer REG operand removed. Otherwise return 0. */
6698 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
6700 if ((insn & (0x1f << 16)) == reg << 16
6701 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
6702 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
6703 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
6704 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
6705 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
6706 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
6707 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
6708 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
6709 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
6710 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
6711 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
6712 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
6713 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
6714 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
6715 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
6716 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
6718 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
6719 && ((insn & 3) == 0 || (insn & 3) == 3))))
6721 insn &= ~(0x1f << 16);
6723 else if ((insn & (0x1f << 21)) == reg << 21
6724 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
6725 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
6726 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
6728 insn &= ~(0x1f << 21);
6729 insn |= (insn & (0x1f << 16)) << 5;
6730 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
6731 insn -= 2 >> 26; /* convert to ori,oris */
6738 /* The RELOCATE_SECTION function is called by the ELF backend linker
6739 to handle the relocations for a section.
6741 The relocs are always passed as Rela structures; if the section
6742 actually uses Rel structures, the r_addend field will always be
6745 This function is responsible for adjust the section contents as
6746 necessary, and (if using Rela relocs and generating a
6747 relocatable output file) adjusting the reloc addend as
6750 This function does not have to worry about setting the reloc
6751 address or the reloc symbol index.
6753 LOCAL_SYMS is a pointer to the swapped in local symbols.
6755 LOCAL_SECTIONS is an array giving the section in the input file
6756 corresponding to the st_shndx field of each local symbol.
6758 The global hash table entry for the global symbols can be found
6759 via elf_sym_hashes (input_bfd).
6761 When generating relocatable output, this function must handle
6762 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6763 going to be the section symbol corresponding to the output
6764 section, which means that the addend must be adjusted
6768 ppc_elf_relocate_section (bfd *output_bfd,
6769 struct bfd_link_info *info,
6771 asection *input_section,
6773 Elf_Internal_Rela *relocs,
6774 Elf_Internal_Sym *local_syms,
6775 asection **local_sections)
6777 Elf_Internal_Shdr *symtab_hdr;
6778 struct elf_link_hash_entry **sym_hashes;
6779 struct ppc_elf_link_hash_table *htab;
6780 Elf_Internal_Rela *rel;
6781 Elf_Internal_Rela *relend;
6782 Elf_Internal_Rela outrel;
6783 asection *got2, *sreloc = NULL;
6784 bfd_vma *local_got_offsets;
6785 bfd_boolean ret = TRUE;
6786 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6787 bfd_boolean is_vxworks_tls;
6790 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6791 "%ld relocations%s",
6792 input_bfd, input_section,
6793 (long) input_section->reloc_count,
6794 (info->relocatable) ? " (relocatable)" : "");
6797 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6799 /* Initialize howto table if not already done. */
6800 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6801 ppc_elf_howto_init ();
6803 htab = ppc_elf_hash_table (info);
6804 local_got_offsets = elf_local_got_offsets (input_bfd);
6805 symtab_hdr = &elf_symtab_hdr (input_bfd);
6806 sym_hashes = elf_sym_hashes (input_bfd);
6807 /* We have to handle relocations in vxworks .tls_vars sections
6808 specially, because the dynamic loader is 'weird'. */
6809 is_vxworks_tls = (htab->is_vxworks && info->shared
6810 && !strcmp (input_section->output_section->name,
6813 relend = relocs + input_section->reloc_count;
6814 for (; rel < relend; rel++)
6816 enum elf_ppc_reloc_type r_type;
6818 bfd_reloc_status_type r;
6819 Elf_Internal_Sym *sym;
6821 struct elf_link_hash_entry *h;
6822 const char *sym_name;
6823 reloc_howto_type *howto;
6824 unsigned long r_symndx;
6826 bfd_vma branch_bit, from;
6827 bfd_boolean unresolved_reloc;
6829 unsigned int tls_type, tls_mask, tls_gd;
6830 struct plt_entry **ifunc;
6832 r_type = ELF32_R_TYPE (rel->r_info);
6836 unresolved_reloc = FALSE;
6838 r_symndx = ELF32_R_SYM (rel->r_info);
6840 if (r_symndx < symtab_hdr->sh_info)
6842 sym = local_syms + r_symndx;
6843 sec = local_sections[r_symndx];
6844 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6846 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6850 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6851 r_symndx, symtab_hdr, sym_hashes,
6853 unresolved_reloc, warned);
6855 sym_name = h->root.root.string;
6858 if (sec != NULL && elf_discarded_section (sec))
6860 /* For relocs against symbols from removed linkonce sections,
6861 or sections discarded by a linker script, we just want the
6862 section contents zeroed. Avoid any special processing. */
6864 if (r_type < R_PPC_max)
6865 howto = ppc_elf_howto_table[r_type];
6866 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6867 rel, relend, howto, contents);
6870 if (info->relocatable)
6873 && r_type == R_PPC_PLTREL24
6874 && rel->r_addend >= 32768)
6876 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6877 addend specifies the GOT pointer offset within .got2. */
6878 rel->r_addend += got2->output_offset;
6883 /* TLS optimizations. Replace instruction sequences and relocs
6884 based on information we collected in tls_optimize. We edit
6885 RELOCS so that --emit-relocs will output something sensible
6886 for the final instruction stream. */
6890 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6891 else if (local_got_offsets != NULL)
6893 struct plt_entry **local_plt;
6896 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6897 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
6898 tls_mask = lgot_masks[r_symndx];
6901 /* Ensure reloc mapping code below stays sane. */
6902 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6903 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6904 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6905 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6906 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6907 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6908 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6909 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6916 case R_PPC_GOT_TPREL16:
6917 case R_PPC_GOT_TPREL16_LO:
6918 if ((tls_mask & TLS_TLS) != 0
6919 && (tls_mask & TLS_TPREL) == 0)
6923 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6925 insn |= 0x3c020000; /* addis 0,2,0 */
6926 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6927 r_type = R_PPC_TPREL16_HA;
6928 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6933 if ((tls_mask & TLS_TLS) != 0
6934 && (tls_mask & TLS_TPREL) == 0)
6938 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6939 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
6942 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6943 r_type = R_PPC_TPREL16_LO;
6944 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6946 /* Was PPC_TLS which sits on insn boundary, now
6947 PPC_TPREL16_LO which is at low-order half-word. */
6948 rel->r_offset += d_offset;
6952 case R_PPC_GOT_TLSGD16_HI:
6953 case R_PPC_GOT_TLSGD16_HA:
6954 tls_gd = TLS_TPRELGD;
6955 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6959 case R_PPC_GOT_TLSLD16_HI:
6960 case R_PPC_GOT_TLSLD16_HA:
6961 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6964 if ((tls_mask & tls_gd) != 0)
6965 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6966 + R_PPC_GOT_TPREL16);
6969 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6970 rel->r_offset -= d_offset;
6971 r_type = R_PPC_NONE;
6973 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6977 case R_PPC_GOT_TLSGD16:
6978 case R_PPC_GOT_TLSGD16_LO:
6979 tls_gd = TLS_TPRELGD;
6980 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6984 case R_PPC_GOT_TLSLD16:
6985 case R_PPC_GOT_TLSLD16_LO:
6986 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6988 unsigned int insn1, insn2;
6992 offset = (bfd_vma) -1;
6993 /* If not using the newer R_PPC_TLSGD/LD to mark
6994 __tls_get_addr calls, we must trust that the call
6995 stays with its arg setup insns, ie. that the next
6996 reloc is the __tls_get_addr call associated with
6997 the current reloc. Edit both insns. */
6998 if (input_section->has_tls_get_addr_call
7000 && branch_reloc_hash_match (input_bfd, rel + 1,
7001 htab->tls_get_addr))
7002 offset = rel[1].r_offset;
7003 if ((tls_mask & tls_gd) != 0)
7006 insn1 = bfd_get_32 (output_bfd,
7007 contents + rel->r_offset - d_offset);
7008 insn1 &= (1 << 26) - 1;
7009 insn1 |= 32 << 26; /* lwz */
7010 if (offset != (bfd_vma) -1)
7012 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7013 insn2 = 0x7c631214; /* add 3,3,2 */
7014 bfd_put_32 (output_bfd, insn2, contents + offset);
7016 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7017 + R_PPC_GOT_TPREL16);
7018 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7023 insn1 = 0x3c620000; /* addis 3,2,0 */
7026 /* Was an LD reloc. */
7028 r_symndx < symtab_hdr->sh_info;
7030 if (local_sections[r_symndx] == sec)
7032 if (r_symndx >= symtab_hdr->sh_info)
7033 r_symndx = STN_UNDEF;
7034 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7035 if (r_symndx != STN_UNDEF)
7036 rel->r_addend -= (local_syms[r_symndx].st_value
7037 + sec->output_offset
7038 + sec->output_section->vma);
7040 r_type = R_PPC_TPREL16_HA;
7041 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7042 if (offset != (bfd_vma) -1)
7044 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7045 rel[1].r_offset = offset + d_offset;
7046 rel[1].r_addend = rel->r_addend;
7047 insn2 = 0x38630000; /* addi 3,3,0 */
7048 bfd_put_32 (output_bfd, insn2, contents + offset);
7051 bfd_put_32 (output_bfd, insn1,
7052 contents + rel->r_offset - d_offset);
7055 /* We changed the symbol on an LD reloc. Start over
7056 in order to get h, sym, sec etc. right. */
7064 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7067 bfd_vma offset = rel->r_offset;
7069 if ((tls_mask & TLS_TPRELGD) != 0)
7072 r_type = R_PPC_NONE;
7073 insn2 = 0x7c631214; /* add 3,3,2 */
7078 r_type = R_PPC_TPREL16_LO;
7079 rel->r_offset += d_offset;
7080 insn2 = 0x38630000; /* addi 3,3,0 */
7082 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7083 bfd_put_32 (output_bfd, insn2, contents + offset);
7084 /* Zap the reloc on the _tls_get_addr call too. */
7085 BFD_ASSERT (offset == rel[1].r_offset);
7086 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7091 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7096 r_symndx < symtab_hdr->sh_info;
7098 if (local_sections[r_symndx] == sec)
7100 if (r_symndx >= symtab_hdr->sh_info)
7101 r_symndx = STN_UNDEF;
7102 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7103 if (r_symndx != STN_UNDEF)
7104 rel->r_addend -= (local_syms[r_symndx].st_value
7105 + sec->output_offset
7106 + sec->output_section->vma);
7108 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7109 rel->r_offset += d_offset;
7110 insn2 = 0x38630000; /* addi 3,3,0 */
7111 bfd_put_32 (output_bfd, insn2,
7112 contents + rel->r_offset - d_offset);
7113 /* Zap the reloc on the _tls_get_addr call too. */
7114 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7115 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7122 /* Handle other relocations that tweak non-addend part of insn. */
7129 /* Branch taken prediction relocations. */
7130 case R_PPC_ADDR14_BRTAKEN:
7131 case R_PPC_REL14_BRTAKEN:
7132 branch_bit = BRANCH_PREDICT_BIT;
7135 /* Branch not taken prediction relocations. */
7136 case R_PPC_ADDR14_BRNTAKEN:
7137 case R_PPC_REL14_BRNTAKEN:
7141 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7142 insn &= ~BRANCH_PREDICT_BIT;
7145 from = (rel->r_offset
7146 + input_section->output_offset
7147 + input_section->output_section->vma);
7149 /* Invert 'y' bit if not the default. */
7150 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7151 insn ^= BRANCH_PREDICT_BIT;
7153 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7159 if (!htab->is_vxworks)
7161 struct plt_entry *ent;
7165 if (h->type == STT_GNU_IFUNC)
7166 ifunc = &h->plt.plist;
7168 else if (local_got_offsets != NULL
7169 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7171 struct plt_entry **local_plt;
7173 local_plt = (struct plt_entry **) (local_got_offsets
7174 + symtab_hdr->sh_info);
7175 ifunc = local_plt + r_symndx;
7181 || is_branch_reloc (r_type)))
7184 if (r_type == R_PPC_PLTREL24 && info->shared)
7185 addend = rel->r_addend;
7186 ent = find_plt_ent (ifunc, got2, addend);
7190 if (h == NULL && (ent->plt.offset & 1) == 0)
7192 Elf_Internal_Rela rela;
7195 rela.r_offset = (htab->iplt->output_section->vma
7196 + htab->iplt->output_offset
7198 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7199 rela.r_addend = relocation;
7200 loc = htab->reliplt->contents;
7201 loc += (htab->reliplt->reloc_count++
7202 * sizeof (Elf32_External_Rela));
7203 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7205 ent->plt.offset |= 1;
7207 if (h == NULL && (ent->glink_offset & 1) == 0)
7209 unsigned char *p = ((unsigned char *) htab->glink->contents
7210 + ent->glink_offset);
7211 write_glink_stub (ent, htab->iplt, p, info);
7212 ent->glink_offset |= 1;
7215 unresolved_reloc = FALSE;
7216 if (htab->plt_type == PLT_NEW
7217 || !htab->elf.dynamic_sections_created
7219 relocation = (htab->glink->output_section->vma
7220 + htab->glink->output_offset
7221 + (ent->glink_offset & ~1));
7223 relocation = (htab->plt->output_section->vma
7224 + htab->plt->output_offset
7229 addend = rel->r_addend;
7232 if (r_type < R_PPC_max)
7233 howto = ppc_elf_howto_table[r_type];
7237 info->callbacks->einfo
7238 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
7239 input_bfd, (int) r_type, sym_name);
7241 bfd_set_error (bfd_error_bad_value);
7249 case R_PPC_EMB_MRKREF:
7250 case R_PPC_GNU_VTINHERIT:
7251 case R_PPC_GNU_VTENTRY:
7254 /* GOT16 relocations. Like an ADDR16 using the symbol's
7255 address in the GOT as relocation value instead of the
7256 symbol's value itself. Also, create a GOT entry for the
7257 symbol and put the symbol value there. */
7258 case R_PPC_GOT_TLSGD16:
7259 case R_PPC_GOT_TLSGD16_LO:
7260 case R_PPC_GOT_TLSGD16_HI:
7261 case R_PPC_GOT_TLSGD16_HA:
7262 tls_type = TLS_TLS | TLS_GD;
7265 case R_PPC_GOT_TLSLD16:
7266 case R_PPC_GOT_TLSLD16_LO:
7267 case R_PPC_GOT_TLSLD16_HI:
7268 case R_PPC_GOT_TLSLD16_HA:
7269 tls_type = TLS_TLS | TLS_LD;
7272 case R_PPC_GOT_TPREL16:
7273 case R_PPC_GOT_TPREL16_LO:
7274 case R_PPC_GOT_TPREL16_HI:
7275 case R_PPC_GOT_TPREL16_HA:
7276 tls_type = TLS_TLS | TLS_TPREL;
7279 case R_PPC_GOT_DTPREL16:
7280 case R_PPC_GOT_DTPREL16_LO:
7281 case R_PPC_GOT_DTPREL16_HI:
7282 case R_PPC_GOT_DTPREL16_HA:
7283 tls_type = TLS_TLS | TLS_DTPREL;
7287 case R_PPC_GOT16_LO:
7288 case R_PPC_GOT16_HI:
7289 case R_PPC_GOT16_HA:
7293 /* Relocation is to the entry for this symbol in the global
7299 if (htab->got == NULL)
7303 if (tls_type == (TLS_TLS | TLS_LD)
7305 || !h->def_dynamic))
7306 offp = &htab->tlsld_got.offset;
7310 dyn = htab->elf.dynamic_sections_created;
7311 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7313 && SYMBOL_REFERENCES_LOCAL (info, h)))
7314 /* This is actually a static link, or it is a
7315 -Bsymbolic link and the symbol is defined
7316 locally, or the symbol was forced to be local
7317 because of a version file. */
7322 unresolved_reloc = FALSE;
7324 offp = &h->got.offset;
7328 if (local_got_offsets == NULL)
7330 offp = &local_got_offsets[r_symndx];
7333 /* The offset must always be a multiple of 4. We use the
7334 least significant bit to record whether we have already
7335 processed this entry. */
7341 unsigned int tls_m = (tls_mask
7342 & (TLS_LD | TLS_GD | TLS_DTPREL
7343 | TLS_TPREL | TLS_TPRELGD));
7345 if (offp == &htab->tlsld_got.offset)
7351 /* We might have multiple got entries for this sym.
7352 Initialize them all. */
7357 if ((tls_m & TLS_LD) != 0)
7359 tls_ty = TLS_TLS | TLS_LD;
7362 else if ((tls_m & TLS_GD) != 0)
7364 tls_ty = TLS_TLS | TLS_GD;
7367 else if ((tls_m & TLS_DTPREL) != 0)
7369 tls_ty = TLS_TLS | TLS_DTPREL;
7370 tls_m &= ~TLS_DTPREL;
7372 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7374 tls_ty = TLS_TLS | TLS_TPREL;
7378 /* Generate relocs for the dynamic linker. */
7379 if ((info->shared || indx != 0)
7380 && (offp == &htab->tlsld_got.offset
7382 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7383 || h->root.type != bfd_link_hash_undefweak))
7385 asection *rsec = htab->relgot;
7388 outrel.r_offset = (htab->got->output_section->vma
7389 + htab->got->output_offset
7391 outrel.r_addend = 0;
7392 if (tls_ty & (TLS_LD | TLS_GD))
7394 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7395 if (tls_ty == (TLS_TLS | TLS_GD))
7397 loc = rsec->contents;
7398 loc += (rsec->reloc_count++
7399 * sizeof (Elf32_External_Rela));
7400 bfd_elf32_swap_reloca_out (output_bfd,
7402 outrel.r_offset += 4;
7404 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7407 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7408 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7409 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7410 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7412 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7413 else if (ifunc != NULL)
7414 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7416 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7417 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7419 outrel.r_addend += relocation;
7420 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7421 outrel.r_addend -= htab->elf.tls_sec->vma;
7423 loc = rsec->contents;
7424 loc += (rsec->reloc_count++
7425 * sizeof (Elf32_External_Rela));
7426 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7429 /* Init the .got section contents if we're not
7430 emitting a reloc. */
7433 bfd_vma value = relocation;
7435 if (tls_ty == (TLS_TLS | TLS_LD))
7437 else if (tls_ty != 0)
7439 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7440 if (tls_ty == (TLS_TLS | TLS_TPREL))
7441 value += DTP_OFFSET - TP_OFFSET;
7443 if (tls_ty == (TLS_TLS | TLS_GD))
7445 bfd_put_32 (output_bfd, value,
7446 htab->got->contents + off + 4);
7450 bfd_put_32 (output_bfd, value,
7451 htab->got->contents + off);
7455 if (tls_ty & (TLS_LD | TLS_GD))
7464 if (off >= (bfd_vma) -2)
7467 if ((tls_type & TLS_TLS) != 0)
7469 if (tls_type != (TLS_TLS | TLS_LD))
7471 if ((tls_mask & TLS_LD) != 0
7473 || !h->def_dynamic))
7475 if (tls_type != (TLS_TLS | TLS_GD))
7477 if ((tls_mask & TLS_GD) != 0)
7479 if (tls_type != (TLS_TLS | TLS_DTPREL))
7481 if ((tls_mask & TLS_DTPREL) != 0)
7488 relocation = (htab->got->output_section->vma
7489 + htab->got->output_offset
7491 - SYM_VAL (htab->elf.hgot));
7493 /* Addends on got relocations don't make much sense.
7494 x+off@got is actually x@got+off, and since the got is
7495 generated by a hash table traversal, the value in the
7496 got at entry m+n bears little relation to the entry m. */
7498 info->callbacks->einfo
7499 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
7500 input_bfd, input_section, rel->r_offset,
7506 /* Relocations that need no special processing. */
7507 case R_PPC_LOCAL24PC:
7508 /* It makes no sense to point a local relocation
7509 at a symbol not in this object. */
7510 if (unresolved_reloc)
7512 if (! (*info->callbacks->undefined_symbol) (info,
7513 h->root.root.string,
7523 case R_PPC_DTPREL16:
7524 case R_PPC_DTPREL16_LO:
7525 case R_PPC_DTPREL16_HI:
7526 case R_PPC_DTPREL16_HA:
7527 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7530 /* Relocations that may need to be propagated if this is a shared
7533 case R_PPC_TPREL16_LO:
7534 case R_PPC_TPREL16_HI:
7535 case R_PPC_TPREL16_HA:
7537 && h->root.type == bfd_link_hash_undefweak
7538 && h->dynindx == -1)
7540 /* Make this relocation against an undefined weak symbol
7541 resolve to zero. This is really just a tweak, since
7542 code using weak externs ought to check that they are
7543 defined before using them. */
7544 bfd_byte *p = contents + rel->r_offset - d_offset;
7545 unsigned int insn = bfd_get_32 (output_bfd, p);
7546 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
7548 bfd_put_32 (output_bfd, insn, p);
7551 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7552 /* The TPREL16 relocs shouldn't really be used in shared
7553 libs as they will result in DT_TEXTREL being set, but
7554 support them anyway. */
7558 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7561 case R_PPC_DTPREL32:
7562 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7565 case R_PPC_DTPMOD32:
7571 case R_PPC_REL16_LO:
7572 case R_PPC_REL16_HI:
7573 case R_PPC_REL16_HA:
7577 if (h == NULL || h == htab->elf.hgot)
7583 case R_PPC_ADDR16_LO:
7584 case R_PPC_ADDR16_HI:
7585 case R_PPC_ADDR16_HA:
7592 case R_PPC_REL14_BRTAKEN:
7593 case R_PPC_REL14_BRNTAKEN:
7594 /* If these relocations are not to a named symbol, they can be
7595 handled right here, no need to bother the dynamic linker. */
7596 if (SYMBOL_CALLS_LOCAL (info, h)
7597 || h == htab->elf.hgot)
7603 case R_PPC_ADDR14_BRTAKEN:
7604 case R_PPC_ADDR14_BRNTAKEN:
7605 if (h != NULL && !info->shared)
7610 if ((input_section->flags & SEC_ALLOC) == 0
7616 && ((h->root.type == bfd_link_hash_undefined
7617 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7618 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7619 || (h->root.type == bfd_link_hash_undefweak
7620 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
7621 && (must_be_dyn_reloc (info, r_type)
7622 || !SYMBOL_CALLS_LOCAL (info, h)))
7623 || (ELIMINATE_COPY_RELOCS
7628 && !h->def_regular))
7633 fprintf (stderr, "ppc_elf_relocate_section needs to "
7634 "create relocation for %s\n",
7635 (h && h->root.root.string
7636 ? h->root.root.string : "<unknown>"));
7639 /* When generating a shared object, these relocations
7640 are copied into the output file to be resolved at run
7644 sreloc = elf_section_data (input_section)->sreloc;
7645 if (!htab->elf.dynamic_sections_created)
7646 sreloc = htab->reliplt;
7652 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
7655 if (outrel.r_offset == (bfd_vma) -1
7656 || outrel.r_offset == (bfd_vma) -2)
7657 skip = (int) outrel.r_offset;
7658 outrel.r_offset += (input_section->output_section->vma
7659 + input_section->output_offset);
7662 memset (&outrel, 0, sizeof outrel);
7664 && (h->root.type == bfd_link_hash_undefined
7665 || h->root.type == bfd_link_hash_undefweak))
7666 || !SYMBOL_REFERENCES_LOCAL (info, h))
7668 unresolved_reloc = FALSE;
7669 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7670 outrel.r_addend = rel->r_addend;
7674 outrel.r_addend = relocation + rel->r_addend;
7676 if (r_type != R_PPC_ADDR32)
7682 /* If we get here when building a static
7683 executable, then the libc startup function
7684 responsible for applying indirect function
7685 relocations is going to complain about
7687 If we get here when building a dynamic
7688 executable, it will be because we have
7689 a text relocation. The dynamic loader
7690 will set the text segment writable and
7691 non-executable to apply text relocations.
7692 So we'll segfault when trying to run the
7693 indirection function to resolve the reloc. */
7694 info->callbacks->einfo
7695 (_("%P: %H: relocation %s for indirect "
7696 "function %s unsupported\n"),
7697 input_bfd, input_section, rel->r_offset,
7702 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
7704 else if (sec == NULL || sec->owner == NULL)
7706 bfd_set_error (bfd_error_bad_value);
7713 /* We are turning this relocation into one
7714 against a section symbol. It would be
7715 proper to subtract the symbol's value,
7716 osec->vma, from the emitted reloc addend,
7717 but ld.so expects buggy relocs.
7718 FIXME: Why not always use a zero index? */
7719 osec = sec->output_section;
7720 indx = elf_section_data (osec)->dynindx;
7723 osec = htab->elf.text_index_section;
7724 indx = elf_section_data (osec)->dynindx;
7726 BFD_ASSERT (indx != 0);
7729 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7730 indx, osec->name, osec->flags,
7731 h->root.root.string);
7735 outrel.r_info = ELF32_R_INFO (indx, r_type);
7737 else if (ifunc != NULL)
7738 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7740 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7743 loc = sreloc->contents;
7744 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7745 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7750 /* This reloc will be computed at runtime. We clear the memory
7751 so that it contains predictable value. */
7753 && ((input_section->flags & SEC_ALLOC) != 0
7754 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7756 relocation = howto->pc_relative ? outrel.r_offset : 0;
7763 case R_PPC_RELAX_PLT:
7764 case R_PPC_RELAX_PLTREL24:
7767 struct plt_entry *ent;
7768 bfd_vma got2_addend = 0;
7770 if (r_type == R_PPC_RELAX_PLTREL24)
7773 got2_addend = addend;
7776 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
7777 if (htab->plt_type == PLT_NEW)
7778 relocation = (htab->glink->output_section->vma
7779 + htab->glink->output_offset
7780 + ent->glink_offset);
7782 relocation = (htab->plt->output_section->vma
7783 + htab->plt->output_offset
7790 relocation -= (input_section->output_section->vma
7791 + input_section->output_offset
7792 + rel->r_offset - 4);
7798 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7799 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7801 /* We're clearing the bits for R_PPC_ADDR16_HA
7802 and R_PPC_ADDR16_LO here. */
7806 /* t0 is HA, t1 is LO */
7807 relocation += addend;
7808 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7809 t1 |= relocation & 0xffff;
7811 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7812 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
7814 /* Rewrite the reloc and convert one of the trailing nop
7815 relocs to describe this relocation. */
7816 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7817 /* The relocs are at the bottom 2 bytes */
7818 rel[0].r_offset += 2;
7819 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7820 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7821 rel[1].r_offset += 4;
7822 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7827 /* Indirect .sdata relocation. */
7828 case R_PPC_EMB_SDAI16:
7829 BFD_ASSERT (htab->sdata[0].section != NULL);
7830 if (!is_static_defined (htab->sdata[0].sym))
7832 unresolved_reloc = TRUE;
7836 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7837 h, relocation, rel);
7841 /* Indirect .sdata2 relocation. */
7842 case R_PPC_EMB_SDA2I16:
7843 BFD_ASSERT (htab->sdata[1].section != NULL);
7844 if (!is_static_defined (htab->sdata[1].sym))
7846 unresolved_reloc = TRUE;
7850 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7851 h, relocation, rel);
7855 /* Handle the TOC16 reloc. We want to use the offset within the .got
7856 section, not the actual VMA. This is appropriate when generating
7857 an embedded ELF object, for which the .got section acts like the
7858 AIX .toc section. */
7859 case R_PPC_TOC16: /* phony GOT16 relocations */
7860 if (sec == NULL || sec->output_section == NULL)
7862 unresolved_reloc = TRUE;
7865 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7866 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7868 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7871 case R_PPC_PLTREL24:
7872 if (h == NULL || ifunc != NULL)
7874 /* Relocation is to the entry for this symbol in the
7875 procedure linkage table. */
7877 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7878 info->shared ? addend : 0);
7881 || htab->plt == NULL)
7883 /* We didn't make a PLT entry for this symbol. This
7884 happens when statically linking PIC code, or when
7885 using -Bsymbolic. */
7889 unresolved_reloc = FALSE;
7890 if (htab->plt_type == PLT_NEW)
7891 relocation = (htab->glink->output_section->vma
7892 + htab->glink->output_offset
7893 + ent->glink_offset);
7895 relocation = (htab->plt->output_section->vma
7896 + htab->plt->output_offset
7901 /* Relocate against _SDA_BASE_. */
7902 case R_PPC_SDAREL16:
7905 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
7908 || sec->output_section == NULL
7909 || !is_static_defined (sda))
7911 unresolved_reloc = TRUE;
7914 addend -= SYM_VAL (sda);
7916 name = bfd_get_section_name (abfd, sec->output_section);
7917 if (! ((CONST_STRNEQ (name, ".sdata")
7918 && (name[6] == 0 || name[6] == '.'))
7919 || (CONST_STRNEQ (name, ".sbss")
7920 && (name[5] == 0 || name[5] == '.'))))
7922 info->callbacks->einfo
7923 (_("%P: %B: the target (%s) of a %s relocation is "
7924 "in the wrong output section (%s)\n"),
7933 /* Relocate against _SDA2_BASE_. */
7934 case R_PPC_EMB_SDA2REL:
7937 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
7940 || sec->output_section == NULL
7941 || !is_static_defined (sda))
7943 unresolved_reloc = TRUE;
7946 addend -= SYM_VAL (sda);
7948 name = bfd_get_section_name (abfd, sec->output_section);
7949 if (! (CONST_STRNEQ (name, ".sdata2")
7950 || CONST_STRNEQ (name, ".sbss2")))
7952 info->callbacks->einfo
7953 (_("%P: %B: the target (%s) of a %s relocation is "
7954 "in the wrong output section (%s)\n"),
7963 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7964 case R_PPC_EMB_SDA21:
7965 case R_PPC_EMB_RELSDA:
7969 struct elf_link_hash_entry *sda = NULL;
7971 if (sec == NULL || sec->output_section == NULL)
7973 unresolved_reloc = TRUE;
7977 name = bfd_get_section_name (abfd, sec->output_section);
7978 if (((CONST_STRNEQ (name, ".sdata")
7979 && (name[6] == 0 || name[6] == '.'))
7980 || (CONST_STRNEQ (name, ".sbss")
7981 && (name[5] == 0 || name[5] == '.'))))
7984 sda = htab->sdata[0].sym;
7986 else if (CONST_STRNEQ (name, ".sdata2")
7987 || CONST_STRNEQ (name, ".sbss2"))
7990 sda = htab->sdata[1].sym;
7992 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7993 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7999 info->callbacks->einfo
8000 (_("%P: %B: the target (%s) of a %s relocation is "
8001 "in the wrong output section (%s)\n"),
8007 bfd_set_error (bfd_error_bad_value);
8014 if (!is_static_defined (sda))
8016 unresolved_reloc = TRUE;
8019 addend -= SYM_VAL (sda);
8022 if (r_type == R_PPC_EMB_SDA21)
8024 bfd_vma insn; /* Fill in register field. */
8026 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8027 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8028 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8033 /* Relocate against the beginning of the section. */
8035 case R_PPC_SECTOFF_LO:
8036 case R_PPC_SECTOFF_HI:
8037 case R_PPC_SECTOFF_HA:
8038 if (sec == NULL || sec->output_section == NULL)
8040 unresolved_reloc = TRUE;
8043 addend -= sec->output_section->vma;
8046 /* Negative relocations. */
8047 case R_PPC_EMB_NADDR32:
8048 case R_PPC_EMB_NADDR16:
8049 case R_PPC_EMB_NADDR16_LO:
8050 case R_PPC_EMB_NADDR16_HI:
8051 case R_PPC_EMB_NADDR16_HA:
8052 addend -= 2 * relocation;
8056 case R_PPC_GLOB_DAT:
8057 case R_PPC_JMP_SLOT:
8058 case R_PPC_RELATIVE:
8059 case R_PPC_IRELATIVE:
8061 case R_PPC_PLTREL32:
8062 case R_PPC_PLT16_LO:
8063 case R_PPC_PLT16_HI:
8064 case R_PPC_PLT16_HA:
8066 case R_PPC_EMB_RELSEC16:
8067 case R_PPC_EMB_RELST_LO:
8068 case R_PPC_EMB_RELST_HI:
8069 case R_PPC_EMB_RELST_HA:
8070 case R_PPC_EMB_BIT_FLD:
8071 info->callbacks->einfo
8072 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
8077 bfd_set_error (bfd_error_invalid_operation);
8082 /* Do any further special processing. */
8088 case R_PPC_ADDR16_HA:
8089 case R_PPC_REL16_HA:
8090 case R_PPC_SECTOFF_HA:
8091 case R_PPC_TPREL16_HA:
8092 case R_PPC_DTPREL16_HA:
8093 case R_PPC_EMB_NADDR16_HA:
8094 case R_PPC_EMB_RELST_HA:
8095 /* It's just possible that this symbol is a weak symbol
8096 that's not actually defined anywhere. In that case,
8097 'sec' would be NULL, and we should leave the symbol
8098 alone (it will be set to zero elsewhere in the link). */
8103 case R_PPC_PLT16_HA:
8104 case R_PPC_GOT16_HA:
8105 case R_PPC_GOT_TLSGD16_HA:
8106 case R_PPC_GOT_TLSLD16_HA:
8107 case R_PPC_GOT_TPREL16_HA:
8108 case R_PPC_GOT_DTPREL16_HA:
8109 /* Add 0x10000 if sign bit in 0:15 is set.
8110 Bits 0:15 are not used. */
8116 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8117 "offset = %ld, addend = %ld\n",
8122 (long) rel->r_offset,
8126 if (unresolved_reloc
8127 && !((input_section->flags & SEC_DEBUGGING) != 0
8130 info->callbacks->einfo
8131 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
8132 input_bfd, input_section, rel->r_offset,
8138 r = _bfd_final_link_relocate (howto,
8146 if (r != bfd_reloc_ok)
8148 if (r == bfd_reloc_overflow)
8153 && h->root.type == bfd_link_hash_undefweak
8154 && howto->pc_relative)
8156 /* Assume this is a call protected by other code that
8157 detect the symbol is undefined. If this is the case,
8158 we can safely ignore the overflow. If not, the
8159 program is hosed anyway, and a little warning isn't
8165 if (! (*info->callbacks->reloc_overflow) (info,
8166 (h ? &h->root : NULL),
8177 info->callbacks->einfo
8178 (_("%P: %H: %s reloc against `%s': error %d\n"),
8179 input_bfd, input_section, rel->r_offset,
8180 howto->name, sym_name, (int) r);
8187 fprintf (stderr, "\n");
8193 /* Finish up dynamic symbol handling. We set the contents of various
8194 dynamic sections here. */
8197 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
8198 struct bfd_link_info *info,
8199 struct elf_link_hash_entry *h,
8200 Elf_Internal_Sym *sym)
8202 struct ppc_elf_link_hash_table *htab;
8203 struct plt_entry *ent;
8204 bfd_boolean doneone;
8207 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
8208 h->root.root.string);
8211 htab = ppc_elf_hash_table (info);
8212 BFD_ASSERT (htab->elf.dynobj != NULL);
8215 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8216 if (ent->plt.offset != (bfd_vma) -1)
8220 Elf_Internal_Rela rela;
8222 bfd_vma reloc_index;
8224 if (htab->plt_type == PLT_NEW
8225 || !htab->elf.dynamic_sections_created
8226 || h->dynindx == -1)
8227 reloc_index = ent->plt.offset / 4;
8230 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
8231 / htab->plt_slot_size);
8232 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
8233 && htab->plt_type == PLT_OLD)
8234 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
8237 /* This symbol has an entry in the procedure linkage table.
8239 if (htab->plt_type == PLT_VXWORKS
8240 && htab->elf.dynamic_sections_created
8241 && h->dynindx != -1)
8244 const bfd_vma *plt_entry;
8246 /* The first three entries in .got.plt are reserved. */
8247 got_offset = (reloc_index + 3) * 4;
8249 /* Use the right PLT. */
8250 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8251 : ppc_elf_vxworks_plt_entry;
8253 /* Fill in the .plt on VxWorks. */
8256 bfd_put_32 (output_bfd,
8257 plt_entry[0] | PPC_HA (got_offset),
8258 htab->plt->contents + ent->plt.offset + 0);
8259 bfd_put_32 (output_bfd,
8260 plt_entry[1] | PPC_LO (got_offset),
8261 htab->plt->contents + ent->plt.offset + 4);
8265 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
8267 bfd_put_32 (output_bfd,
8268 plt_entry[0] | PPC_HA (got_loc),
8269 htab->plt->contents + ent->plt.offset + 0);
8270 bfd_put_32 (output_bfd,
8271 plt_entry[1] | PPC_LO (got_loc),
8272 htab->plt->contents + ent->plt.offset + 4);
8275 bfd_put_32 (output_bfd, plt_entry[2],
8276 htab->plt->contents + ent->plt.offset + 8);
8277 bfd_put_32 (output_bfd, plt_entry[3],
8278 htab->plt->contents + ent->plt.offset + 12);
8280 /* This instruction is an immediate load. The value loaded is
8281 the byte offset of the R_PPC_JMP_SLOT relocation from the
8282 start of the .rela.plt section. The value is stored in the
8283 low-order 16 bits of the load instruction. */
8284 /* NOTE: It appears that this is now an index rather than a
8285 prescaled offset. */
8286 bfd_put_32 (output_bfd,
8287 plt_entry[4] | reloc_index,
8288 htab->plt->contents + ent->plt.offset + 16);
8289 /* This instruction is a PC-relative branch whose target is
8290 the start of the PLT section. The address of this branch
8291 instruction is 20 bytes beyond the start of this PLT entry.
8292 The address is encoded in bits 6-29, inclusive. The value
8293 stored is right-shifted by two bits, permitting a 26-bit
8295 bfd_put_32 (output_bfd,
8297 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8298 htab->plt->contents + ent->plt.offset + 20);
8299 bfd_put_32 (output_bfd, plt_entry[6],
8300 htab->plt->contents + ent->plt.offset + 24);
8301 bfd_put_32 (output_bfd, plt_entry[7],
8302 htab->plt->contents + ent->plt.offset + 28);
8304 /* Fill in the GOT entry corresponding to this PLT slot with
8305 the address immediately after the the "bctr" instruction
8306 in this PLT entry. */
8307 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8308 + htab->plt->output_offset
8309 + ent->plt.offset + 16),
8310 htab->sgotplt->contents + got_offset);
8314 /* Fill in a couple of entries in .rela.plt.unloaded. */
8315 loc = htab->srelplt2->contents
8316 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8317 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8318 * sizeof (Elf32_External_Rela));
8320 /* Provide the @ha relocation for the first instruction. */
8321 rela.r_offset = (htab->plt->output_section->vma
8322 + htab->plt->output_offset
8323 + ent->plt.offset + 2);
8324 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8326 rela.r_addend = got_offset;
8327 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8328 loc += sizeof (Elf32_External_Rela);
8330 /* Provide the @l relocation for the second instruction. */
8331 rela.r_offset = (htab->plt->output_section->vma
8332 + htab->plt->output_offset
8333 + ent->plt.offset + 6);
8334 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8336 rela.r_addend = got_offset;
8337 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8338 loc += sizeof (Elf32_External_Rela);
8340 /* Provide a relocation for the GOT entry corresponding to this
8341 PLT slot. Point it at the middle of the .plt entry. */
8342 rela.r_offset = (htab->sgotplt->output_section->vma
8343 + htab->sgotplt->output_offset
8345 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
8347 rela.r_addend = ent->plt.offset + 16;
8348 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8351 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8352 In particular, the offset for the relocation is not the
8353 address of the PLT entry for this function, as specified
8354 by the ABI. Instead, the offset is set to the address of
8355 the GOT slot for this function. See EABI 4.4.4.1. */
8356 rela.r_offset = (htab->sgotplt->output_section->vma
8357 + htab->sgotplt->output_offset
8363 asection *splt = htab->plt;
8364 if (!htab->elf.dynamic_sections_created
8365 || h->dynindx == -1)
8368 rela.r_offset = (splt->output_section->vma
8369 + splt->output_offset
8371 if (htab->plt_type == PLT_OLD
8372 || !htab->elf.dynamic_sections_created
8373 || h->dynindx == -1)
8375 /* We don't need to fill in the .plt. The ppc dynamic
8376 linker will fill it in. */
8380 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8381 + htab->glink->output_section->vma
8382 + htab->glink->output_offset);
8383 bfd_put_32 (output_bfd, val,
8384 splt->contents + ent->plt.offset);
8388 /* Fill in the entry in the .rela.plt section. */
8390 if (!htab->elf.dynamic_sections_created
8391 || h->dynindx == -1)
8393 BFD_ASSERT (h->type == STT_GNU_IFUNC
8395 && (h->root.type == bfd_link_hash_defined
8396 || h->root.type == bfd_link_hash_defweak));
8397 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8398 rela.r_addend = SYM_VAL (h);
8401 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
8403 if (!htab->elf.dynamic_sections_created
8404 || h->dynindx == -1)
8405 loc = (htab->reliplt->contents
8406 + (htab->reliplt->reloc_count++
8407 * sizeof (Elf32_External_Rela)));
8409 loc = (htab->relplt->contents
8410 + reloc_index * sizeof (Elf32_External_Rela));
8411 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8413 if (!h->def_regular)
8415 /* Mark the symbol as undefined, rather than as
8416 defined in the .plt section. Leave the value if
8417 there were any relocations where pointer equality
8418 matters (this is a clue for the dynamic linker, to
8419 make function pointer comparisons work between an
8420 application and shared library), otherwise set it
8422 sym->st_shndx = SHN_UNDEF;
8423 if (!h->pointer_equality_needed)
8425 else if (!h->ref_regular_nonweak)
8427 /* This breaks function pointer comparisons, but
8428 that is better than breaking tests for a NULL
8429 function pointer. */
8433 else if (h->type == STT_GNU_IFUNC
8436 /* Set the value of ifunc symbols in a non-pie
8437 executable to the glink entry. This is to avoid
8438 text relocations. We can't do this for ifunc in
8439 allocate_dynrelocs, as we do for normal dynamic
8440 function symbols with plt entries, because we need
8441 to keep the original value around for the ifunc
8443 sym->st_shndx = (_bfd_elf_section_from_bfd_section
8444 (output_bfd, htab->glink->output_section));
8445 sym->st_value = (ent->glink_offset
8446 + htab->glink->output_offset
8447 + htab->glink->output_section->vma);
8452 if (htab->plt_type == PLT_NEW
8453 || !htab->elf.dynamic_sections_created
8454 || h->dynindx == -1)
8457 asection *splt = htab->plt;
8458 if (!htab->elf.dynamic_sections_created
8459 || h->dynindx == -1)
8462 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
8464 if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
8466 bfd_put_32 (output_bfd, LWZ_11_3, p);
8468 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
8470 bfd_put_32 (output_bfd, MR_0_3, p);
8472 bfd_put_32 (output_bfd, CMPWI_11_0, p);
8474 bfd_put_32 (output_bfd, ADD_3_12_2, p);
8476 bfd_put_32 (output_bfd, BEQLR, p);
8478 bfd_put_32 (output_bfd, MR_3_0, p);
8480 bfd_put_32 (output_bfd, NOP, p);
8484 write_glink_stub (ent, splt, p, info);
8487 /* We only need one non-PIC glink stub. */
8497 Elf_Internal_Rela rela;
8500 /* This symbols needs a copy reloc. Set it up. */
8503 fprintf (stderr, ", copy");
8506 BFD_ASSERT (h->dynindx != -1);
8508 if (ppc_elf_hash_entry (h)->has_sda_refs)
8512 BFD_ASSERT (s != NULL);
8514 rela.r_offset = SYM_VAL (h);
8515 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8517 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8518 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8522 fprintf (stderr, "\n");
8525 /* Mark some specially defined symbols as absolute. */
8526 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8527 || (!htab->is_vxworks
8528 && (h == htab->elf.hgot
8529 || strcmp (h->root.root.string,
8530 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
8531 sym->st_shndx = SHN_ABS;
8536 static enum elf_reloc_type_class
8537 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8539 switch (ELF32_R_TYPE (rela->r_info))
8541 case R_PPC_RELATIVE:
8542 return reloc_class_relative;
8545 case R_PPC_JMP_SLOT:
8546 return reloc_class_plt;
8548 return reloc_class_copy;
8550 return reloc_class_normal;
8554 /* Finish up the dynamic sections. */
8557 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8558 struct bfd_link_info *info)
8562 struct ppc_elf_link_hash_table *htab;
8565 bfd_boolean ret = TRUE;
8568 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8571 htab = ppc_elf_hash_table (info);
8572 dynobj = elf_hash_table (info)->dynobj;
8573 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8574 if (htab->is_vxworks)
8575 splt = bfd_get_section_by_name (dynobj, ".plt");
8580 if (htab->elf.hgot != NULL)
8581 got = SYM_VAL (htab->elf.hgot);
8583 if (htab->elf.dynamic_sections_created)
8585 Elf32_External_Dyn *dyncon, *dynconend;
8587 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
8589 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8590 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8591 for (; dyncon < dynconend; dyncon++)
8593 Elf_Internal_Dyn dyn;
8596 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
8601 if (htab->is_vxworks)
8605 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8609 dyn.d_un.d_val = htab->relplt->size;
8614 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8618 dyn.d_un.d_ptr = got;
8622 if (htab->is_vxworks)
8625 dyn.d_un.d_ptr -= htab->relplt->size;
8631 if (htab->is_vxworks
8632 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8637 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8641 if (htab->got != NULL)
8643 if (htab->elf.hgot->root.u.def.section == htab->got
8644 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
8646 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
8648 p += htab->elf.hgot->root.u.def.value;
8649 if (htab->plt_type == PLT_OLD)
8651 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8652 so that a function can easily find the address of
8653 _GLOBAL_OFFSET_TABLE_. */
8654 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8655 < htab->elf.hgot->root.u.def.section->size);
8656 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8661 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8662 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8663 < htab->elf.hgot->root.u.def.section->size);
8664 bfd_put_32 (output_bfd, val, p);
8669 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
8670 htab->elf.hgot->root.root.string,
8671 (htab->sgotplt != NULL
8672 ? htab->sgotplt->name : htab->got->name));
8673 bfd_set_error (bfd_error_bad_value);
8677 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8680 /* Fill in the first entry in the VxWorks procedure linkage table. */
8681 if (splt && splt->size > 0)
8683 /* Use the right PLT. */
8684 const bfd_vma *plt_entry = (info->shared
8685 ? ppc_elf_vxworks_pic_plt0_entry
8686 : ppc_elf_vxworks_plt0_entry);
8690 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
8692 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
8693 splt->contents + 0);
8694 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
8695 splt->contents + 4);
8699 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8700 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8702 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8703 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8704 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8705 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8706 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8707 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8711 Elf_Internal_Rela rela;
8714 loc = htab->srelplt2->contents;
8716 /* Output the @ha relocation for the first instruction. */
8717 rela.r_offset = (htab->plt->output_section->vma
8718 + htab->plt->output_offset
8720 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8722 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8723 loc += sizeof (Elf32_External_Rela);
8725 /* Output the @l relocation for the second instruction. */
8726 rela.r_offset = (htab->plt->output_section->vma
8727 + htab->plt->output_offset
8729 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8731 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8732 loc += sizeof (Elf32_External_Rela);
8734 /* Fix up the remaining relocations. They may have the wrong
8735 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8736 in which symbols were output. */
8737 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8739 Elf_Internal_Rela rel;
8741 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8742 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8743 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8744 loc += sizeof (Elf32_External_Rela);
8746 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8747 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8748 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8749 loc += sizeof (Elf32_External_Rela);
8751 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8752 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
8753 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8754 loc += sizeof (Elf32_External_Rela);
8759 if (htab->glink != NULL
8760 && htab->glink->contents != NULL
8761 && htab->elf.dynamic_sections_created)
8764 unsigned char *endp;
8769 * PIC glink code is the following:
8771 * # ith PLT code stub.
8772 * addis 11,30,(plt+(i-1)*4-got)@ha
8773 * lwz 11,(plt+(i-1)*4-got)@l(11)
8777 * # A table of branches, one for each plt entry.
8778 * # The idea is that the plt call stub loads ctr and r11 with these
8779 * # addresses, so (r11 - res_0) gives the plt index * 4.
8780 * res_0: b PLTresolve
8781 * res_1: b PLTresolve
8783 * # Some number of entries towards the end can be nops
8789 * addis 11,11,(1f-res_0)@ha
8792 * 1: addi 11,11,(1b-res_0)@l
8795 * sub 11,11,12 # r11 = index * 4
8796 * addis 12,12,(got+4-1b)@ha
8797 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8798 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8801 * add 11,0,11 # r11 = index * 12 = reloc offset.
8804 static const unsigned int pic_plt_resolve[] =
8825 * Non-PIC glink code is a little simpler.
8827 * # ith PLT code stub.
8828 * lis 11,(plt+(i-1)*4)@ha
8829 * lwz 11,(plt+(i-1)*4)@l(11)
8833 * The branch table is the same, then comes
8837 * addis 11,11,(-res_0)@ha
8838 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8839 * addi 11,11,(-res_0)@l # r11 = index * 4
8842 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8843 * add 11,0,11 # r11 = index * 12 = reloc offset.
8846 static const unsigned int plt_resolve[] =
8866 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8868 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
8871 /* Build the branch table, one for each plt entry (less one),
8872 and perhaps some padding. */
8873 p = htab->glink->contents;
8874 p += htab->glink_pltresolve;
8875 endp = htab->glink->contents;
8876 endp += htab->glink->size - GLINK_PLTRESOLVE;
8877 while (p < endp - 8 * 4)
8879 bfd_put_32 (output_bfd, B + endp - p, p);
8884 bfd_put_32 (output_bfd, NOP, p);
8888 res0 = (htab->glink_pltresolve
8889 + htab->glink->output_section->vma
8890 + htab->glink->output_offset);
8892 /* Last comes the PLTresolve stub. */
8897 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8899 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8902 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8904 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8905 + htab->glink->output_section->vma
8906 + htab->glink->output_offset);
8908 bfd_put_32 (output_bfd,
8909 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8910 bfd_put_32 (output_bfd,
8911 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8912 bfd_put_32 (output_bfd,
8913 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8914 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8916 bfd_put_32 (output_bfd,
8917 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8918 bfd_put_32 (output_bfd,
8919 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8923 bfd_put_32 (output_bfd,
8924 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8925 bfd_put_32 (output_bfd,
8926 LWZ_12_12 + 4, p + 9*4);
8931 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8933 bfd_put_32 (output_bfd, plt_resolve[i], p);
8936 p -= 4 * ARRAY_SIZE (plt_resolve);
8938 bfd_put_32 (output_bfd,
8939 LIS_12 + PPC_HA (got + 4), p + 0*4);
8940 bfd_put_32 (output_bfd,
8941 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8942 bfd_put_32 (output_bfd,
8943 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8944 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8946 bfd_put_32 (output_bfd,
8947 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8948 bfd_put_32 (output_bfd,
8949 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8953 bfd_put_32 (output_bfd,
8954 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8955 bfd_put_32 (output_bfd,
8956 LWZ_12_12 + 4, p + 6*4);
8961 if (htab->glink_eh_frame != NULL
8962 && htab->glink_eh_frame->contents != NULL)
8964 unsigned char *p = htab->glink_eh_frame->contents;
8967 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
8968 /* CIE length (rewrite in case little-endian). */
8969 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
8970 p += sizeof (glink_eh_frame_cie);
8972 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
8973 bfd_put_32 (htab->elf.dynobj, val, p);
8976 val = p - htab->glink_eh_frame->contents;
8977 bfd_put_32 (htab->elf.dynobj, val, p);
8979 /* Offset to .glink. */
8980 val = (htab->glink->output_section->vma
8981 + htab->glink->output_offset);
8982 val -= (htab->glink_eh_frame->output_section->vma
8983 + htab->glink_eh_frame->output_offset);
8984 val -= p - htab->glink_eh_frame->contents;
8985 bfd_put_32 (htab->elf.dynobj, val, p);
8988 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
8994 && htab->elf.dynamic_sections_created)
8996 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
8998 *p++ = DW_CFA_advance_loc + adv;
9001 *p++ = DW_CFA_advance_loc1;
9004 else if (adv < 65536)
9006 *p++ = DW_CFA_advance_loc2;
9007 bfd_put_16 (htab->elf.dynobj, adv, p);
9012 *p++ = DW_CFA_advance_loc4;
9013 bfd_put_32 (htab->elf.dynobj, adv, p);
9016 *p++ = DW_CFA_register;
9019 *p++ = DW_CFA_advance_loc + 4;
9020 *p++ = DW_CFA_restore_extended;
9023 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
9024 == htab->glink_eh_frame->size);
9026 if (htab->glink_eh_frame->sec_info_type == ELF_INFO_TYPE_EH_FRAME
9027 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
9028 htab->glink_eh_frame,
9029 htab->glink_eh_frame->contents))
9036 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
9037 #define TARGET_LITTLE_NAME "elf32-powerpcle"
9038 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
9039 #define TARGET_BIG_NAME "elf32-powerpc"
9040 #define ELF_ARCH bfd_arch_powerpc
9041 #define ELF_TARGET_ID PPC32_ELF_DATA
9042 #define ELF_MACHINE_CODE EM_PPC
9043 #ifdef __QNXTARGET__
9044 #define ELF_MAXPAGESIZE 0x1000
9046 #define ELF_MAXPAGESIZE 0x10000
9048 #define ELF_MINPAGESIZE 0x1000
9049 #define ELF_COMMONPAGESIZE 0x1000
9050 #define elf_info_to_howto ppc_elf_info_to_howto
9052 #ifdef EM_CYGNUS_POWERPC
9053 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
9057 #define ELF_MACHINE_ALT2 EM_PPC_OLD
9060 #define elf_backend_plt_not_loaded 1
9061 #define elf_backend_can_gc_sections 1
9062 #define elf_backend_can_refcount 1
9063 #define elf_backend_rela_normal 1
9065 #define bfd_elf32_mkobject ppc_elf_mkobject
9066 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
9067 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
9068 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
9069 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
9070 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
9071 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
9072 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
9074 #define elf_backend_object_p ppc_elf_object_p
9075 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
9076 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
9077 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
9078 #define elf_backend_relocate_section ppc_elf_relocate_section
9079 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
9080 #define elf_backend_check_relocs ppc_elf_check_relocs
9081 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
9082 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
9083 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
9084 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
9085 #define elf_backend_hash_symbol ppc_elf_hash_symbol
9086 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
9087 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
9088 #define elf_backend_fake_sections ppc_elf_fake_sections
9089 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
9090 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
9091 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
9092 #define elf_backend_write_core_note ppc_elf_write_core_note
9093 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
9094 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
9095 #define elf_backend_final_write_processing ppc_elf_final_write_processing
9096 #define elf_backend_write_section ppc_elf_write_section
9097 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
9098 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
9099 #define elf_backend_action_discarded ppc_elf_action_discarded
9100 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
9101 #define elf_backend_post_process_headers _bfd_elf_set_osabi
9103 #include "elf32-target.h"
9105 /* VxWorks Target */
9107 #undef TARGET_LITTLE_SYM
9108 #undef TARGET_LITTLE_NAME
9110 #undef TARGET_BIG_SYM
9111 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
9112 #undef TARGET_BIG_NAME
9113 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
9115 /* VxWorks uses the elf default section flags for .plt. */
9116 static const struct bfd_elf_special_section *
9117 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9119 if (sec->name == NULL)
9122 if (strcmp (sec->name, ".plt") == 0)
9123 return _bfd_elf_get_sec_type_attr (abfd, sec);
9125 return ppc_elf_get_sec_type_attr (abfd, sec);
9128 /* Like ppc_elf_link_hash_table_create, but overrides
9129 appropriately for VxWorks. */
9130 static struct bfd_link_hash_table *
9131 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
9133 struct bfd_link_hash_table *ret;
9135 ret = ppc_elf_link_hash_table_create (abfd);
9138 struct ppc_elf_link_hash_table *htab
9139 = (struct ppc_elf_link_hash_table *)ret;
9140 htab->is_vxworks = 1;
9141 htab->plt_type = PLT_VXWORKS;
9142 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
9143 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
9144 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
9149 /* Tweak magic VxWorks symbols as they are loaded. */
9151 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
9152 struct bfd_link_info *info,
9153 Elf_Internal_Sym *sym,
9154 const char **namep ATTRIBUTE_UNUSED,
9155 flagword *flagsp ATTRIBUTE_UNUSED,
9159 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
9163 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
9167 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
9169 ppc_elf_final_write_processing(abfd, linker);
9170 elf_vxworks_final_write_processing(abfd, linker);
9173 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
9175 #undef elf_backend_want_plt_sym
9176 #define elf_backend_want_plt_sym 1
9177 #undef elf_backend_want_got_plt
9178 #define elf_backend_want_got_plt 1
9179 #undef elf_backend_got_symbol_offset
9180 #define elf_backend_got_symbol_offset 0
9181 #undef elf_backend_plt_not_loaded
9182 #define elf_backend_plt_not_loaded 0
9183 #undef elf_backend_plt_readonly
9184 #define elf_backend_plt_readonly 1
9185 #undef elf_backend_got_header_size
9186 #define elf_backend_got_header_size 12
9188 #undef bfd_elf32_get_synthetic_symtab
9190 #undef bfd_elf32_bfd_link_hash_table_create
9191 #define bfd_elf32_bfd_link_hash_table_create \
9192 ppc_elf_vxworks_link_hash_table_create
9193 #undef elf_backend_add_symbol_hook
9194 #define elf_backend_add_symbol_hook \
9195 ppc_elf_vxworks_add_symbol_hook
9196 #undef elf_backend_link_output_symbol_hook
9197 #define elf_backend_link_output_symbol_hook \
9198 elf_vxworks_link_output_symbol_hook
9199 #undef elf_backend_final_write_processing
9200 #define elf_backend_final_write_processing \
9201 ppc_elf_vxworks_final_write_processing
9202 #undef elf_backend_get_sec_type_attr
9203 #define elf_backend_get_sec_type_attr \
9204 ppc_elf_vxworks_get_sec_type_attr
9205 #undef elf_backend_emit_relocs
9206 #define elf_backend_emit_relocs \
9207 elf_vxworks_emit_relocs
9210 #define elf32_bed ppc_elf_vxworks_bed
9211 #undef elf_backend_post_process_headers
9213 #include "elf32-target.h"
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