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, 2012
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"
40 #include "elf-linux-psinfo.h"
42 typedef enum split16_format_type
49 /* RELA relocations are used here. */
51 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 static bfd_reloc_status_type ppc_elf_unhandled_reloc
54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
55 static void ppc_elf_vle_split16
56 (bfd *, bfd_byte *, bfd_vma, bfd_vma, split16_format_type);
58 /* Branch prediction bit for branch taken relocs. */
59 #define BRANCH_PREDICT_BIT 0x200000
60 /* Mask to set RA in memory instructions. */
61 #define RA_REGISTER_MASK 0x001f0000
62 /* Value to shift register by to insert RA. */
63 #define RA_REGISTER_SHIFT 16
65 /* The name of the dynamic interpreter. This is put in the .interp
67 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
69 /* For old-style PLT. */
70 /* The number of single-slot PLT entries (the rest use two slots). */
71 #define PLT_NUM_SINGLE_ENTRIES 8192
73 /* For new-style .glink and .plt. */
74 #define GLINK_PLTRESOLVE 16*4
75 #define GLINK_ENTRY_SIZE 4*4
76 #define TLS_GET_ADDR_GLINK_SIZE 12*4
78 /* VxWorks uses its own plt layout, filled in by the static linker. */
80 /* The standard VxWorks PLT entry. */
81 #define VXWORKS_PLT_ENTRY_SIZE 32
82 static const bfd_vma ppc_elf_vxworks_plt_entry
83 [VXWORKS_PLT_ENTRY_SIZE / 4] =
85 0x3d800000, /* lis r12,0 */
86 0x818c0000, /* lwz r12,0(r12) */
87 0x7d8903a6, /* mtctr r12 */
88 0x4e800420, /* bctr */
89 0x39600000, /* li r11,0 */
90 0x48000000, /* b 14 <.PLT0resolve+0x4> */
94 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
95 [VXWORKS_PLT_ENTRY_SIZE / 4] =
97 0x3d9e0000, /* addis r12,r30,0 */
98 0x818c0000, /* lwz r12,0(r12) */
99 0x7d8903a6, /* mtctr r12 */
100 0x4e800420, /* bctr */
101 0x39600000, /* li r11,0 */
102 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
103 0x60000000, /* nop */
104 0x60000000, /* nop */
107 /* The initial VxWorks PLT entry. */
108 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
109 static const bfd_vma ppc_elf_vxworks_plt0_entry
110 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
112 0x3d800000, /* lis r12,0 */
113 0x398c0000, /* addi r12,r12,0 */
114 0x800c0008, /* lwz r0,8(r12) */
115 0x7c0903a6, /* mtctr r0 */
116 0x818c0004, /* lwz r12,4(r12) */
117 0x4e800420, /* bctr */
118 0x60000000, /* nop */
119 0x60000000, /* nop */
121 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
122 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
124 0x819e0008, /* lwz r12,8(r30) */
125 0x7d8903a6, /* mtctr r12 */
126 0x819e0004, /* lwz r12,4(r30) */
127 0x4e800420, /* bctr */
128 0x60000000, /* nop */
129 0x60000000, /* nop */
130 0x60000000, /* nop */
131 0x60000000, /* nop */
134 /* For executables, we have some additional relocations in
135 .rela.plt.unloaded, for the kernel loader. */
137 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
138 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
139 /* The number of relocations in the PLTResolve slot. */
140 #define VXWORKS_PLTRESOLVE_RELOCS 2
141 /* The number of relocations in the PLTResolve slot when when creating
143 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
145 /* Some instructions. */
146 #define ADDIS_11_11 0x3d6b0000
147 #define ADDIS_11_30 0x3d7e0000
148 #define ADDIS_12_12 0x3d8c0000
149 #define ADDI_11_11 0x396b0000
150 #define ADD_0_11_11 0x7c0b5a14
151 #define ADD_3_12_2 0x7c6c1214
152 #define ADD_11_0_11 0x7d605a14
154 #define BCL_20_31 0x429f0005
155 #define BCTR 0x4e800420
156 #define BEQLR 0x4d820020
157 #define CMPWI_11_0 0x2c0b0000
158 #define LIS_11 0x3d600000
159 #define LIS_12 0x3d800000
160 #define LWZU_0_12 0x840c0000
161 #define LWZ_0_12 0x800c0000
162 #define LWZ_11_3 0x81630000
163 #define LWZ_11_11 0x816b0000
164 #define LWZ_11_30 0x817e0000
165 #define LWZ_12_3 0x81830000
166 #define LWZ_12_12 0x818c0000
167 #define MR_0_3 0x7c601b78
168 #define MR_3_0 0x7c030378
169 #define MFLR_0 0x7c0802a6
170 #define MFLR_12 0x7d8802a6
171 #define MTCTR_0 0x7c0903a6
172 #define MTCTR_11 0x7d6903a6
173 #define MTLR_0 0x7c0803a6
174 #define NOP 0x60000000
175 #define SUB_11_11_12 0x7d6c5850
177 /* Offset of tp and dtp pointers from start of TLS block. */
178 #define TP_OFFSET 0x7000
179 #define DTP_OFFSET 0x8000
181 /* The value of a defined global symbol. */
182 #define SYM_VAL(SYM) \
183 ((SYM)->root.u.def.section->output_section->vma \
184 + (SYM)->root.u.def.section->output_offset \
185 + (SYM)->root.u.def.value)
187 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
189 static reloc_howto_type ppc_elf_howto_raw[] = {
190 /* This reloc does nothing. */
191 HOWTO (R_PPC_NONE, /* type */
193 2, /* size (0 = byte, 1 = short, 2 = long) */
195 FALSE, /* pc_relative */
197 complain_overflow_bitfield, /* complain_on_overflow */
198 bfd_elf_generic_reloc, /* special_function */
199 "R_PPC_NONE", /* name */
200 FALSE, /* partial_inplace */
203 FALSE), /* pcrel_offset */
205 /* A standard 32 bit relocation. */
206 HOWTO (R_PPC_ADDR32, /* type */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
210 FALSE, /* pc_relative */
212 complain_overflow_bitfield, /* complain_on_overflow */
213 bfd_elf_generic_reloc, /* special_function */
214 "R_PPC_ADDR32", /* name */
215 FALSE, /* partial_inplace */
217 0xffffffff, /* dst_mask */
218 FALSE), /* pcrel_offset */
220 /* An absolute 26 bit branch; the lower two bits must be zero.
221 FIXME: we don't check that, we just clear them. */
222 HOWTO (R_PPC_ADDR24, /* type */
224 2, /* size (0 = byte, 1 = short, 2 = long) */
226 FALSE, /* pc_relative */
228 complain_overflow_bitfield, /* complain_on_overflow */
229 bfd_elf_generic_reloc, /* special_function */
230 "R_PPC_ADDR24", /* name */
231 FALSE, /* partial_inplace */
233 0x3fffffc, /* dst_mask */
234 FALSE), /* pcrel_offset */
236 /* A standard 16 bit relocation. */
237 HOWTO (R_PPC_ADDR16, /* type */
239 1, /* size (0 = byte, 1 = short, 2 = long) */
241 FALSE, /* pc_relative */
243 complain_overflow_bitfield, /* complain_on_overflow */
244 bfd_elf_generic_reloc, /* special_function */
245 "R_PPC_ADDR16", /* name */
246 FALSE, /* partial_inplace */
248 0xffff, /* dst_mask */
249 FALSE), /* pcrel_offset */
251 /* A 16 bit relocation without overflow. */
252 HOWTO (R_PPC_ADDR16_LO, /* type */
254 1, /* size (0 = byte, 1 = short, 2 = long) */
256 FALSE, /* pc_relative */
258 complain_overflow_dont,/* complain_on_overflow */
259 bfd_elf_generic_reloc, /* special_function */
260 "R_PPC_ADDR16_LO", /* name */
261 FALSE, /* partial_inplace */
263 0xffff, /* dst_mask */
264 FALSE), /* pcrel_offset */
266 /* The high order 16 bits of an address. */
267 HOWTO (R_PPC_ADDR16_HI, /* type */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
271 FALSE, /* pc_relative */
273 complain_overflow_dont, /* complain_on_overflow */
274 bfd_elf_generic_reloc, /* special_function */
275 "R_PPC_ADDR16_HI", /* name */
276 FALSE, /* partial_inplace */
278 0xffff, /* dst_mask */
279 FALSE), /* pcrel_offset */
281 /* The high order 16 bits of an address, plus 1 if the contents of
282 the low 16 bits, treated as a signed number, is negative. */
283 HOWTO (R_PPC_ADDR16_HA, /* type */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
287 FALSE, /* pc_relative */
289 complain_overflow_dont, /* complain_on_overflow */
290 ppc_elf_addr16_ha_reloc, /* special_function */
291 "R_PPC_ADDR16_HA", /* name */
292 FALSE, /* partial_inplace */
294 0xffff, /* dst_mask */
295 FALSE), /* pcrel_offset */
297 /* An absolute 16 bit branch; the lower two bits must be zero.
298 FIXME: we don't check that, we just clear them. */
299 HOWTO (R_PPC_ADDR14, /* type */
301 2, /* size (0 = byte, 1 = short, 2 = long) */
303 FALSE, /* pc_relative */
305 complain_overflow_bitfield, /* complain_on_overflow */
306 bfd_elf_generic_reloc, /* special_function */
307 "R_PPC_ADDR14", /* name */
308 FALSE, /* partial_inplace */
310 0xfffc, /* dst_mask */
311 FALSE), /* pcrel_offset */
313 /* An absolute 16 bit branch, for which bit 10 should be set to
314 indicate that the branch is expected to be taken. The lower two
315 bits must be zero. */
316 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
318 2, /* size (0 = byte, 1 = short, 2 = long) */
320 FALSE, /* pc_relative */
322 complain_overflow_bitfield, /* complain_on_overflow */
323 bfd_elf_generic_reloc, /* special_function */
324 "R_PPC_ADDR14_BRTAKEN",/* name */
325 FALSE, /* partial_inplace */
327 0xfffc, /* dst_mask */
328 FALSE), /* pcrel_offset */
330 /* An absolute 16 bit branch, for which bit 10 should be set to
331 indicate that the branch is not expected to be taken. The lower
332 two bits must be zero. */
333 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
337 FALSE, /* pc_relative */
339 complain_overflow_bitfield, /* complain_on_overflow */
340 bfd_elf_generic_reloc, /* special_function */
341 "R_PPC_ADDR14_BRNTAKEN",/* name */
342 FALSE, /* partial_inplace */
344 0xfffc, /* dst_mask */
345 FALSE), /* pcrel_offset */
347 /* A relative 26 bit branch; the lower two bits must be zero. */
348 HOWTO (R_PPC_REL24, /* type */
350 2, /* size (0 = byte, 1 = short, 2 = long) */
352 TRUE, /* pc_relative */
354 complain_overflow_signed, /* complain_on_overflow */
355 bfd_elf_generic_reloc, /* special_function */
356 "R_PPC_REL24", /* name */
357 FALSE, /* partial_inplace */
359 0x3fffffc, /* dst_mask */
360 TRUE), /* pcrel_offset */
362 /* A relative 16 bit branch; the lower two bits must be zero. */
363 HOWTO (R_PPC_REL14, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 TRUE, /* pc_relative */
369 complain_overflow_signed, /* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_PPC_REL14", /* name */
372 FALSE, /* partial_inplace */
374 0xfffc, /* dst_mask */
375 TRUE), /* pcrel_offset */
377 /* A relative 16 bit branch. Bit 10 should be set to indicate that
378 the branch is expected to be taken. The lower two bits must be
380 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
384 TRUE, /* pc_relative */
386 complain_overflow_signed, /* complain_on_overflow */
387 bfd_elf_generic_reloc, /* special_function */
388 "R_PPC_REL14_BRTAKEN", /* name */
389 FALSE, /* partial_inplace */
391 0xfffc, /* dst_mask */
392 TRUE), /* pcrel_offset */
394 /* A relative 16 bit branch. Bit 10 should be set to indicate that
395 the branch is not expected to be taken. The lower two bits must
397 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
399 2, /* size (0 = byte, 1 = short, 2 = long) */
401 TRUE, /* pc_relative */
403 complain_overflow_signed, /* complain_on_overflow */
404 bfd_elf_generic_reloc, /* special_function */
405 "R_PPC_REL14_BRNTAKEN",/* name */
406 FALSE, /* partial_inplace */
408 0xfffc, /* dst_mask */
409 TRUE), /* pcrel_offset */
411 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
413 HOWTO (R_PPC_GOT16, /* type */
415 1, /* size (0 = byte, 1 = short, 2 = long) */
417 FALSE, /* pc_relative */
419 complain_overflow_signed, /* complain_on_overflow */
420 bfd_elf_generic_reloc, /* special_function */
421 "R_PPC_GOT16", /* name */
422 FALSE, /* partial_inplace */
424 0xffff, /* dst_mask */
425 FALSE), /* pcrel_offset */
427 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
429 HOWTO (R_PPC_GOT16_LO, /* type */
431 1, /* size (0 = byte, 1 = short, 2 = long) */
433 FALSE, /* pc_relative */
435 complain_overflow_dont, /* complain_on_overflow */
436 bfd_elf_generic_reloc, /* special_function */
437 "R_PPC_GOT16_LO", /* name */
438 FALSE, /* partial_inplace */
440 0xffff, /* dst_mask */
441 FALSE), /* pcrel_offset */
443 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
445 HOWTO (R_PPC_GOT16_HI, /* type */
447 1, /* size (0 = byte, 1 = short, 2 = long) */
449 FALSE, /* pc_relative */
451 complain_overflow_bitfield, /* complain_on_overflow */
452 bfd_elf_generic_reloc, /* special_function */
453 "R_PPC_GOT16_HI", /* name */
454 FALSE, /* partial_inplace */
456 0xffff, /* dst_mask */
457 FALSE), /* pcrel_offset */
459 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
461 HOWTO (R_PPC_GOT16_HA, /* type */
463 1, /* size (0 = byte, 1 = short, 2 = long) */
465 FALSE, /* pc_relative */
467 complain_overflow_bitfield, /* complain_on_overflow */
468 ppc_elf_addr16_ha_reloc, /* special_function */
469 "R_PPC_GOT16_HA", /* name */
470 FALSE, /* partial_inplace */
472 0xffff, /* dst_mask */
473 FALSE), /* pcrel_offset */
475 /* Like R_PPC_REL24, but referring to the procedure linkage table
476 entry for the symbol. */
477 HOWTO (R_PPC_PLTREL24, /* type */
479 2, /* size (0 = byte, 1 = short, 2 = long) */
481 TRUE, /* pc_relative */
483 complain_overflow_signed, /* complain_on_overflow */
484 bfd_elf_generic_reloc, /* special_function */
485 "R_PPC_PLTREL24", /* name */
486 FALSE, /* partial_inplace */
488 0x3fffffc, /* dst_mask */
489 TRUE), /* pcrel_offset */
491 /* This is used only by the dynamic linker. The symbol should exist
492 both in the object being run and in some shared library. The
493 dynamic linker copies the data addressed by the symbol from the
494 shared library into the object, because the object being
495 run has to have the data at some particular address. */
496 HOWTO (R_PPC_COPY, /* type */
498 2, /* size (0 = byte, 1 = short, 2 = long) */
500 FALSE, /* pc_relative */
502 complain_overflow_bitfield, /* complain_on_overflow */
503 bfd_elf_generic_reloc, /* special_function */
504 "R_PPC_COPY", /* name */
505 FALSE, /* partial_inplace */
508 FALSE), /* pcrel_offset */
510 /* Like R_PPC_ADDR32, but used when setting global offset table
512 HOWTO (R_PPC_GLOB_DAT, /* type */
514 2, /* size (0 = byte, 1 = short, 2 = long) */
516 FALSE, /* pc_relative */
518 complain_overflow_bitfield, /* complain_on_overflow */
519 bfd_elf_generic_reloc, /* special_function */
520 "R_PPC_GLOB_DAT", /* name */
521 FALSE, /* partial_inplace */
523 0xffffffff, /* dst_mask */
524 FALSE), /* pcrel_offset */
526 /* Marks a procedure linkage table entry for a symbol. */
527 HOWTO (R_PPC_JMP_SLOT, /* type */
529 2, /* size (0 = byte, 1 = short, 2 = long) */
531 FALSE, /* pc_relative */
533 complain_overflow_bitfield, /* complain_on_overflow */
534 bfd_elf_generic_reloc, /* special_function */
535 "R_PPC_JMP_SLOT", /* name */
536 FALSE, /* partial_inplace */
539 FALSE), /* pcrel_offset */
541 /* Used only by the dynamic linker. When the object is run, this
542 longword is set to the load address of the object, plus the
544 HOWTO (R_PPC_RELATIVE, /* type */
546 2, /* size (0 = byte, 1 = short, 2 = long) */
548 FALSE, /* pc_relative */
550 complain_overflow_bitfield, /* complain_on_overflow */
551 bfd_elf_generic_reloc, /* special_function */
552 "R_PPC_RELATIVE", /* name */
553 FALSE, /* partial_inplace */
555 0xffffffff, /* dst_mask */
556 FALSE), /* pcrel_offset */
558 /* Like R_PPC_REL24, but uses the value of the symbol within the
559 object rather than the final value. Normally used for
560 _GLOBAL_OFFSET_TABLE_. */
561 HOWTO (R_PPC_LOCAL24PC, /* type */
563 2, /* size (0 = byte, 1 = short, 2 = long) */
565 TRUE, /* pc_relative */
567 complain_overflow_signed, /* complain_on_overflow */
568 bfd_elf_generic_reloc, /* special_function */
569 "R_PPC_LOCAL24PC", /* name */
570 FALSE, /* partial_inplace */
572 0x3fffffc, /* dst_mask */
573 TRUE), /* pcrel_offset */
575 /* Like R_PPC_ADDR32, but may be unaligned. */
576 HOWTO (R_PPC_UADDR32, /* type */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
580 FALSE, /* pc_relative */
582 complain_overflow_bitfield, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_PPC_UADDR32", /* name */
585 FALSE, /* partial_inplace */
587 0xffffffff, /* dst_mask */
588 FALSE), /* pcrel_offset */
590 /* Like R_PPC_ADDR16, but may be unaligned. */
591 HOWTO (R_PPC_UADDR16, /* type */
593 1, /* size (0 = byte, 1 = short, 2 = long) */
595 FALSE, /* pc_relative */
597 complain_overflow_bitfield, /* complain_on_overflow */
598 bfd_elf_generic_reloc, /* special_function */
599 "R_PPC_UADDR16", /* name */
600 FALSE, /* partial_inplace */
602 0xffff, /* dst_mask */
603 FALSE), /* pcrel_offset */
605 /* 32-bit PC relative */
606 HOWTO (R_PPC_REL32, /* type */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
610 TRUE, /* pc_relative */
612 complain_overflow_bitfield, /* complain_on_overflow */
613 bfd_elf_generic_reloc, /* special_function */
614 "R_PPC_REL32", /* name */
615 FALSE, /* partial_inplace */
617 0xffffffff, /* dst_mask */
618 TRUE), /* pcrel_offset */
620 /* 32-bit relocation to the symbol's procedure linkage table.
621 FIXME: not supported. */
622 HOWTO (R_PPC_PLT32, /* type */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
626 FALSE, /* pc_relative */
628 complain_overflow_bitfield, /* complain_on_overflow */
629 bfd_elf_generic_reloc, /* special_function */
630 "R_PPC_PLT32", /* name */
631 FALSE, /* partial_inplace */
634 FALSE), /* pcrel_offset */
636 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
637 FIXME: not supported. */
638 HOWTO (R_PPC_PLTREL32, /* type */
640 2, /* size (0 = byte, 1 = short, 2 = long) */
642 TRUE, /* pc_relative */
644 complain_overflow_bitfield, /* complain_on_overflow */
645 bfd_elf_generic_reloc, /* special_function */
646 "R_PPC_PLTREL32", /* name */
647 FALSE, /* partial_inplace */
650 TRUE), /* pcrel_offset */
652 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
654 HOWTO (R_PPC_PLT16_LO, /* type */
656 1, /* size (0 = byte, 1 = short, 2 = long) */
658 FALSE, /* pc_relative */
660 complain_overflow_dont, /* complain_on_overflow */
661 bfd_elf_generic_reloc, /* special_function */
662 "R_PPC_PLT16_LO", /* name */
663 FALSE, /* partial_inplace */
665 0xffff, /* dst_mask */
666 FALSE), /* pcrel_offset */
668 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
670 HOWTO (R_PPC_PLT16_HI, /* type */
672 1, /* size (0 = byte, 1 = short, 2 = long) */
674 FALSE, /* pc_relative */
676 complain_overflow_bitfield, /* complain_on_overflow */
677 bfd_elf_generic_reloc, /* special_function */
678 "R_PPC_PLT16_HI", /* name */
679 FALSE, /* partial_inplace */
681 0xffff, /* dst_mask */
682 FALSE), /* pcrel_offset */
684 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
686 HOWTO (R_PPC_PLT16_HA, /* type */
688 1, /* size (0 = byte, 1 = short, 2 = long) */
690 FALSE, /* pc_relative */
692 complain_overflow_bitfield, /* complain_on_overflow */
693 ppc_elf_addr16_ha_reloc, /* special_function */
694 "R_PPC_PLT16_HA", /* name */
695 FALSE, /* partial_inplace */
697 0xffff, /* dst_mask */
698 FALSE), /* pcrel_offset */
700 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
702 HOWTO (R_PPC_SDAREL16, /* type */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
706 FALSE, /* pc_relative */
708 complain_overflow_signed, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_PPC_SDAREL16", /* name */
711 FALSE, /* partial_inplace */
713 0xffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
716 /* 16-bit section relative relocation. */
717 HOWTO (R_PPC_SECTOFF, /* type */
719 1, /* size (0 = byte, 1 = short, 2 = long) */
721 FALSE, /* pc_relative */
723 complain_overflow_bitfield, /* complain_on_overflow */
724 bfd_elf_generic_reloc, /* special_function */
725 "R_PPC_SECTOFF", /* name */
726 FALSE, /* partial_inplace */
728 0xffff, /* dst_mask */
729 FALSE), /* pcrel_offset */
731 /* 16-bit lower half section relative relocation. */
732 HOWTO (R_PPC_SECTOFF_LO, /* type */
734 1, /* size (0 = byte, 1 = short, 2 = long) */
736 FALSE, /* pc_relative */
738 complain_overflow_dont, /* complain_on_overflow */
739 bfd_elf_generic_reloc, /* special_function */
740 "R_PPC_SECTOFF_LO", /* name */
741 FALSE, /* partial_inplace */
743 0xffff, /* dst_mask */
744 FALSE), /* pcrel_offset */
746 /* 16-bit upper half section relative relocation. */
747 HOWTO (R_PPC_SECTOFF_HI, /* type */
749 1, /* size (0 = byte, 1 = short, 2 = long) */
751 FALSE, /* pc_relative */
753 complain_overflow_bitfield, /* complain_on_overflow */
754 bfd_elf_generic_reloc, /* special_function */
755 "R_PPC_SECTOFF_HI", /* name */
756 FALSE, /* partial_inplace */
758 0xffff, /* dst_mask */
759 FALSE), /* pcrel_offset */
761 /* 16-bit upper half adjusted section relative relocation. */
762 HOWTO (R_PPC_SECTOFF_HA, /* type */
764 1, /* size (0 = byte, 1 = short, 2 = long) */
766 FALSE, /* pc_relative */
768 complain_overflow_bitfield, /* complain_on_overflow */
769 ppc_elf_addr16_ha_reloc, /* special_function */
770 "R_PPC_SECTOFF_HA", /* name */
771 FALSE, /* partial_inplace */
773 0xffff, /* dst_mask */
774 FALSE), /* pcrel_offset */
776 /* Marker relocs for TLS. */
779 2, /* size (0 = byte, 1 = short, 2 = long) */
781 FALSE, /* pc_relative */
783 complain_overflow_dont, /* complain_on_overflow */
784 bfd_elf_generic_reloc, /* special_function */
785 "R_PPC_TLS", /* name */
786 FALSE, /* partial_inplace */
789 FALSE), /* pcrel_offset */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE, /* pc_relative */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_PPC_TLSGD", /* name */
800 FALSE, /* partial_inplace */
803 FALSE), /* pcrel_offset */
807 2, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE, /* pc_relative */
811 complain_overflow_dont, /* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
813 "R_PPC_TLSLD", /* name */
814 FALSE, /* partial_inplace */
817 FALSE), /* pcrel_offset */
819 /* Computes the load module index of the load module that contains the
820 definition of its TLS sym. */
821 HOWTO (R_PPC_DTPMOD32,
823 2, /* size (0 = byte, 1 = short, 2 = long) */
825 FALSE, /* pc_relative */
827 complain_overflow_dont, /* complain_on_overflow */
828 ppc_elf_unhandled_reloc, /* special_function */
829 "R_PPC_DTPMOD32", /* name */
830 FALSE, /* partial_inplace */
832 0xffffffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
835 /* Computes a dtv-relative displacement, the difference between the value
836 of sym+add and the base address of the thread-local storage block that
837 contains the definition of sym, minus 0x8000. */
838 HOWTO (R_PPC_DTPREL32,
840 2, /* size (0 = byte, 1 = short, 2 = long) */
842 FALSE, /* pc_relative */
844 complain_overflow_dont, /* complain_on_overflow */
845 ppc_elf_unhandled_reloc, /* special_function */
846 "R_PPC_DTPREL32", /* name */
847 FALSE, /* partial_inplace */
849 0xffffffff, /* dst_mask */
850 FALSE), /* pcrel_offset */
852 /* A 16 bit dtprel reloc. */
853 HOWTO (R_PPC_DTPREL16,
855 1, /* size (0 = byte, 1 = short, 2 = long) */
857 FALSE, /* pc_relative */
859 complain_overflow_signed, /* complain_on_overflow */
860 ppc_elf_unhandled_reloc, /* special_function */
861 "R_PPC_DTPREL16", /* name */
862 FALSE, /* partial_inplace */
864 0xffff, /* dst_mask */
865 FALSE), /* pcrel_offset */
867 /* Like DTPREL16, but no overflow. */
868 HOWTO (R_PPC_DTPREL16_LO,
870 1, /* size (0 = byte, 1 = short, 2 = long) */
872 FALSE, /* pc_relative */
874 complain_overflow_dont, /* complain_on_overflow */
875 ppc_elf_unhandled_reloc, /* special_function */
876 "R_PPC_DTPREL16_LO", /* name */
877 FALSE, /* partial_inplace */
879 0xffff, /* dst_mask */
880 FALSE), /* pcrel_offset */
882 /* Like DTPREL16_LO, but next higher group of 16 bits. */
883 HOWTO (R_PPC_DTPREL16_HI,
885 1, /* size (0 = byte, 1 = short, 2 = long) */
887 FALSE, /* pc_relative */
889 complain_overflow_dont, /* complain_on_overflow */
890 ppc_elf_unhandled_reloc, /* special_function */
891 "R_PPC_DTPREL16_HI", /* name */
892 FALSE, /* partial_inplace */
894 0xffff, /* dst_mask */
895 FALSE), /* pcrel_offset */
897 /* Like DTPREL16_HI, but adjust for low 16 bits. */
898 HOWTO (R_PPC_DTPREL16_HA,
900 1, /* size (0 = byte, 1 = short, 2 = long) */
902 FALSE, /* pc_relative */
904 complain_overflow_dont, /* complain_on_overflow */
905 ppc_elf_unhandled_reloc, /* special_function */
906 "R_PPC_DTPREL16_HA", /* name */
907 FALSE, /* partial_inplace */
909 0xffff, /* dst_mask */
910 FALSE), /* pcrel_offset */
912 /* Computes a tp-relative displacement, the difference between the value of
913 sym+add and the value of the thread pointer (r13). */
914 HOWTO (R_PPC_TPREL32,
916 2, /* size (0 = byte, 1 = short, 2 = long) */
918 FALSE, /* pc_relative */
920 complain_overflow_dont, /* complain_on_overflow */
921 ppc_elf_unhandled_reloc, /* special_function */
922 "R_PPC_TPREL32", /* name */
923 FALSE, /* partial_inplace */
925 0xffffffff, /* dst_mask */
926 FALSE), /* pcrel_offset */
928 /* A 16 bit tprel reloc. */
929 HOWTO (R_PPC_TPREL16,
931 1, /* size (0 = byte, 1 = short, 2 = long) */
933 FALSE, /* pc_relative */
935 complain_overflow_signed, /* complain_on_overflow */
936 ppc_elf_unhandled_reloc, /* special_function */
937 "R_PPC_TPREL16", /* name */
938 FALSE, /* partial_inplace */
940 0xffff, /* dst_mask */
941 FALSE), /* pcrel_offset */
943 /* Like TPREL16, but no overflow. */
944 HOWTO (R_PPC_TPREL16_LO,
946 1, /* size (0 = byte, 1 = short, 2 = long) */
948 FALSE, /* pc_relative */
950 complain_overflow_dont, /* complain_on_overflow */
951 ppc_elf_unhandled_reloc, /* special_function */
952 "R_PPC_TPREL16_LO", /* name */
953 FALSE, /* partial_inplace */
955 0xffff, /* dst_mask */
956 FALSE), /* pcrel_offset */
958 /* Like TPREL16_LO, but next higher group of 16 bits. */
959 HOWTO (R_PPC_TPREL16_HI,
961 1, /* size (0 = byte, 1 = short, 2 = long) */
963 FALSE, /* pc_relative */
965 complain_overflow_dont, /* complain_on_overflow */
966 ppc_elf_unhandled_reloc, /* special_function */
967 "R_PPC_TPREL16_HI", /* name */
968 FALSE, /* partial_inplace */
970 0xffff, /* dst_mask */
971 FALSE), /* pcrel_offset */
973 /* Like TPREL16_HI, but adjust for low 16 bits. */
974 HOWTO (R_PPC_TPREL16_HA,
976 1, /* size (0 = byte, 1 = short, 2 = long) */
978 FALSE, /* pc_relative */
980 complain_overflow_dont, /* complain_on_overflow */
981 ppc_elf_unhandled_reloc, /* special_function */
982 "R_PPC_TPREL16_HA", /* name */
983 FALSE, /* partial_inplace */
985 0xffff, /* dst_mask */
986 FALSE), /* pcrel_offset */
988 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
989 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
990 to the first entry. */
991 HOWTO (R_PPC_GOT_TLSGD16,
993 1, /* size (0 = byte, 1 = short, 2 = long) */
995 FALSE, /* pc_relative */
997 complain_overflow_signed, /* complain_on_overflow */
998 ppc_elf_unhandled_reloc, /* special_function */
999 "R_PPC_GOT_TLSGD16", /* name */
1000 FALSE, /* partial_inplace */
1002 0xffff, /* dst_mask */
1003 FALSE), /* pcrel_offset */
1005 /* Like GOT_TLSGD16, but no overflow. */
1006 HOWTO (R_PPC_GOT_TLSGD16_LO,
1008 1, /* size (0 = byte, 1 = short, 2 = long) */
1010 FALSE, /* pc_relative */
1012 complain_overflow_dont, /* complain_on_overflow */
1013 ppc_elf_unhandled_reloc, /* special_function */
1014 "R_PPC_GOT_TLSGD16_LO", /* name */
1015 FALSE, /* partial_inplace */
1017 0xffff, /* dst_mask */
1018 FALSE), /* pcrel_offset */
1020 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1021 HOWTO (R_PPC_GOT_TLSGD16_HI,
1022 16, /* rightshift */
1023 1, /* size (0 = byte, 1 = short, 2 = long) */
1025 FALSE, /* pc_relative */
1027 complain_overflow_dont, /* complain_on_overflow */
1028 ppc_elf_unhandled_reloc, /* special_function */
1029 "R_PPC_GOT_TLSGD16_HI", /* name */
1030 FALSE, /* partial_inplace */
1032 0xffff, /* dst_mask */
1033 FALSE), /* pcrel_offset */
1035 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1036 HOWTO (R_PPC_GOT_TLSGD16_HA,
1037 16, /* rightshift */
1038 1, /* size (0 = byte, 1 = short, 2 = long) */
1040 FALSE, /* pc_relative */
1042 complain_overflow_dont, /* complain_on_overflow */
1043 ppc_elf_unhandled_reloc, /* special_function */
1044 "R_PPC_GOT_TLSGD16_HA", /* name */
1045 FALSE, /* partial_inplace */
1047 0xffff, /* dst_mask */
1048 FALSE), /* pcrel_offset */
1050 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1051 with values (sym+add)@dtpmod and zero, and computes the offset to the
1053 HOWTO (R_PPC_GOT_TLSLD16,
1055 1, /* size (0 = byte, 1 = short, 2 = long) */
1057 FALSE, /* pc_relative */
1059 complain_overflow_signed, /* complain_on_overflow */
1060 ppc_elf_unhandled_reloc, /* special_function */
1061 "R_PPC_GOT_TLSLD16", /* name */
1062 FALSE, /* partial_inplace */
1064 0xffff, /* dst_mask */
1065 FALSE), /* pcrel_offset */
1067 /* Like GOT_TLSLD16, but no overflow. */
1068 HOWTO (R_PPC_GOT_TLSLD16_LO,
1070 1, /* size (0 = byte, 1 = short, 2 = long) */
1072 FALSE, /* pc_relative */
1074 complain_overflow_dont, /* complain_on_overflow */
1075 ppc_elf_unhandled_reloc, /* special_function */
1076 "R_PPC_GOT_TLSLD16_LO", /* name */
1077 FALSE, /* partial_inplace */
1079 0xffff, /* dst_mask */
1080 FALSE), /* pcrel_offset */
1082 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1083 HOWTO (R_PPC_GOT_TLSLD16_HI,
1084 16, /* rightshift */
1085 1, /* size (0 = byte, 1 = short, 2 = long) */
1087 FALSE, /* pc_relative */
1089 complain_overflow_dont, /* complain_on_overflow */
1090 ppc_elf_unhandled_reloc, /* special_function */
1091 "R_PPC_GOT_TLSLD16_HI", /* name */
1092 FALSE, /* partial_inplace */
1094 0xffff, /* dst_mask */
1095 FALSE), /* pcrel_offset */
1097 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1098 HOWTO (R_PPC_GOT_TLSLD16_HA,
1099 16, /* rightshift */
1100 1, /* size (0 = byte, 1 = short, 2 = long) */
1102 FALSE, /* pc_relative */
1104 complain_overflow_dont, /* complain_on_overflow */
1105 ppc_elf_unhandled_reloc, /* special_function */
1106 "R_PPC_GOT_TLSLD16_HA", /* name */
1107 FALSE, /* partial_inplace */
1109 0xffff, /* dst_mask */
1110 FALSE), /* pcrel_offset */
1112 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1113 the offset to the entry. */
1114 HOWTO (R_PPC_GOT_DTPREL16,
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 FALSE, /* pc_relative */
1120 complain_overflow_signed, /* complain_on_overflow */
1121 ppc_elf_unhandled_reloc, /* special_function */
1122 "R_PPC_GOT_DTPREL16", /* name */
1123 FALSE, /* partial_inplace */
1125 0xffff, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1128 /* Like GOT_DTPREL16, but no overflow. */
1129 HOWTO (R_PPC_GOT_DTPREL16_LO,
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 FALSE, /* pc_relative */
1135 complain_overflow_dont, /* complain_on_overflow */
1136 ppc_elf_unhandled_reloc, /* special_function */
1137 "R_PPC_GOT_DTPREL16_LO", /* name */
1138 FALSE, /* partial_inplace */
1140 0xffff, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1143 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1144 HOWTO (R_PPC_GOT_DTPREL16_HI,
1145 16, /* rightshift */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 FALSE, /* pc_relative */
1150 complain_overflow_dont, /* complain_on_overflow */
1151 ppc_elf_unhandled_reloc, /* special_function */
1152 "R_PPC_GOT_DTPREL16_HI", /* name */
1153 FALSE, /* partial_inplace */
1155 0xffff, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1158 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1159 HOWTO (R_PPC_GOT_DTPREL16_HA,
1160 16, /* rightshift */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 FALSE, /* pc_relative */
1165 complain_overflow_dont, /* complain_on_overflow */
1166 ppc_elf_unhandled_reloc, /* special_function */
1167 "R_PPC_GOT_DTPREL16_HA", /* name */
1168 FALSE, /* partial_inplace */
1170 0xffff, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1173 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1174 offset to the entry. */
1175 HOWTO (R_PPC_GOT_TPREL16,
1177 1, /* size (0 = byte, 1 = short, 2 = long) */
1179 FALSE, /* pc_relative */
1181 complain_overflow_signed, /* complain_on_overflow */
1182 ppc_elf_unhandled_reloc, /* special_function */
1183 "R_PPC_GOT_TPREL16", /* name */
1184 FALSE, /* partial_inplace */
1186 0xffff, /* dst_mask */
1187 FALSE), /* pcrel_offset */
1189 /* Like GOT_TPREL16, but no overflow. */
1190 HOWTO (R_PPC_GOT_TPREL16_LO,
1192 1, /* size (0 = byte, 1 = short, 2 = long) */
1194 FALSE, /* pc_relative */
1196 complain_overflow_dont, /* complain_on_overflow */
1197 ppc_elf_unhandled_reloc, /* special_function */
1198 "R_PPC_GOT_TPREL16_LO", /* name */
1199 FALSE, /* partial_inplace */
1201 0xffff, /* dst_mask */
1202 FALSE), /* pcrel_offset */
1204 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1205 HOWTO (R_PPC_GOT_TPREL16_HI,
1206 16, /* rightshift */
1207 1, /* size (0 = byte, 1 = short, 2 = long) */
1209 FALSE, /* pc_relative */
1211 complain_overflow_dont, /* complain_on_overflow */
1212 ppc_elf_unhandled_reloc, /* special_function */
1213 "R_PPC_GOT_TPREL16_HI", /* name */
1214 FALSE, /* partial_inplace */
1216 0xffff, /* dst_mask */
1217 FALSE), /* pcrel_offset */
1219 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1220 HOWTO (R_PPC_GOT_TPREL16_HA,
1221 16, /* rightshift */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE, /* pc_relative */
1226 complain_overflow_dont, /* complain_on_overflow */
1227 ppc_elf_unhandled_reloc, /* special_function */
1228 "R_PPC_GOT_TPREL16_HA", /* name */
1229 FALSE, /* partial_inplace */
1231 0xffff, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1234 /* The remaining relocs are from the Embedded ELF ABI, and are not
1235 in the SVR4 ELF ABI. */
1237 /* 32 bit value resulting from the addend minus the symbol. */
1238 HOWTO (R_PPC_EMB_NADDR32, /* type */
1240 2, /* size (0 = byte, 1 = short, 2 = long) */
1242 FALSE, /* pc_relative */
1244 complain_overflow_bitfield, /* complain_on_overflow */
1245 bfd_elf_generic_reloc, /* special_function */
1246 "R_PPC_EMB_NADDR32", /* name */
1247 FALSE, /* partial_inplace */
1249 0xffffffff, /* dst_mask */
1250 FALSE), /* pcrel_offset */
1252 /* 16 bit value resulting from the addend minus the symbol. */
1253 HOWTO (R_PPC_EMB_NADDR16, /* type */
1255 1, /* size (0 = byte, 1 = short, 2 = long) */
1257 FALSE, /* pc_relative */
1259 complain_overflow_bitfield, /* complain_on_overflow */
1260 bfd_elf_generic_reloc, /* special_function */
1261 "R_PPC_EMB_NADDR16", /* name */
1262 FALSE, /* partial_inplace */
1264 0xffff, /* dst_mask */
1265 FALSE), /* pcrel_offset */
1267 /* 16 bit value resulting from the addend minus the symbol. */
1268 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1270 1, /* size (0 = byte, 1 = short, 2 = long) */
1272 FALSE, /* pc_relative */
1274 complain_overflow_dont,/* complain_on_overflow */
1275 bfd_elf_generic_reloc, /* special_function */
1276 "R_PPC_EMB_ADDR16_LO", /* name */
1277 FALSE, /* partial_inplace */
1279 0xffff, /* dst_mask */
1280 FALSE), /* pcrel_offset */
1282 /* The high order 16 bits of the addend minus the symbol. */
1283 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1284 16, /* rightshift */
1285 1, /* size (0 = byte, 1 = short, 2 = long) */
1287 FALSE, /* pc_relative */
1289 complain_overflow_dont, /* complain_on_overflow */
1290 bfd_elf_generic_reloc, /* special_function */
1291 "R_PPC_EMB_NADDR16_HI", /* name */
1292 FALSE, /* partial_inplace */
1294 0xffff, /* dst_mask */
1295 FALSE), /* pcrel_offset */
1297 /* The high order 16 bits of the result of the addend minus the address,
1298 plus 1 if the contents of the low 16 bits, treated as a signed number,
1300 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1301 16, /* rightshift */
1302 1, /* size (0 = byte, 1 = short, 2 = long) */
1304 FALSE, /* pc_relative */
1306 complain_overflow_dont, /* complain_on_overflow */
1307 ppc_elf_addr16_ha_reloc, /* special_function */
1308 "R_PPC_EMB_NADDR16_HA", /* name */
1309 FALSE, /* partial_inplace */
1311 0xffff, /* dst_mask */
1312 FALSE), /* pcrel_offset */
1314 /* 16 bit value resulting from allocating a 4 byte word to hold an
1315 address in the .sdata section, and returning the offset from
1316 _SDA_BASE_ for that relocation. */
1317 HOWTO (R_PPC_EMB_SDAI16, /* type */
1319 1, /* size (0 = byte, 1 = short, 2 = long) */
1321 FALSE, /* pc_relative */
1323 complain_overflow_signed, /* complain_on_overflow */
1324 bfd_elf_generic_reloc, /* special_function */
1325 "R_PPC_EMB_SDAI16", /* name */
1326 FALSE, /* partial_inplace */
1328 0xffff, /* dst_mask */
1329 FALSE), /* pcrel_offset */
1331 /* 16 bit value resulting from allocating a 4 byte word to hold an
1332 address in the .sdata2 section, and returning the offset from
1333 _SDA2_BASE_ for that relocation. */
1334 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1336 1, /* size (0 = byte, 1 = short, 2 = long) */
1338 FALSE, /* pc_relative */
1340 complain_overflow_signed, /* complain_on_overflow */
1341 bfd_elf_generic_reloc, /* special_function */
1342 "R_PPC_EMB_SDA2I16", /* name */
1343 FALSE, /* partial_inplace */
1345 0xffff, /* dst_mask */
1346 FALSE), /* pcrel_offset */
1348 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1349 small data items. */
1350 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1354 FALSE, /* pc_relative */
1356 complain_overflow_signed, /* complain_on_overflow */
1357 bfd_elf_generic_reloc, /* special_function */
1358 "R_PPC_EMB_SDA2REL", /* name */
1359 FALSE, /* partial_inplace */
1361 0xffff, /* dst_mask */
1362 FALSE), /* pcrel_offset */
1364 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1365 signed offset from the appropriate base, and filling in the register
1366 field with the appropriate register (0, 2, or 13). */
1367 HOWTO (R_PPC_EMB_SDA21, /* type */
1369 2, /* size (0 = byte, 1 = short, 2 = long) */
1371 FALSE, /* pc_relative */
1373 complain_overflow_signed, /* complain_on_overflow */
1374 bfd_elf_generic_reloc, /* special_function */
1375 "R_PPC_EMB_SDA21", /* name */
1376 FALSE, /* partial_inplace */
1378 0xffff, /* dst_mask */
1379 FALSE), /* pcrel_offset */
1381 /* Relocation not handled: R_PPC_EMB_MRKREF */
1382 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1383 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1384 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1385 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1386 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1388 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1389 in the 16 bit signed offset from the appropriate base, and filling in the
1390 register field with the appropriate register (0, 2, or 13). */
1391 HOWTO (R_PPC_EMB_RELSDA, /* type */
1393 1, /* size (0 = byte, 1 = short, 2 = long) */
1395 FALSE, /* pc_relative */
1397 complain_overflow_signed, /* complain_on_overflow */
1398 bfd_elf_generic_reloc, /* special_function */
1399 "R_PPC_EMB_RELSDA", /* name */
1400 FALSE, /* partial_inplace */
1402 0xffff, /* dst_mask */
1403 FALSE), /* pcrel_offset */
1405 /* A relative 8 bit branch. */
1406 HOWTO (R_PPC_VLE_REL8, /* type */
1408 1, /* size (0 = byte, 1 = short, 2 = long) */
1410 TRUE, /* pc_relative */
1412 complain_overflow_signed, /* complain_on_overflow */
1413 bfd_elf_generic_reloc, /* special_function */
1414 "R_PPC_VLE_REL8", /* name */
1415 FALSE, /* partial_inplace */
1417 0xff, /* dst_mask */
1418 TRUE), /* pcrel_offset */
1420 /* A relative 15 bit branch. */
1421 HOWTO (R_PPC_VLE_REL15, /* type */
1423 2, /* size (0 = byte, 1 = short, 2 = long) */
1425 TRUE, /* pc_relative */
1427 complain_overflow_signed, /* complain_on_overflow */
1428 bfd_elf_generic_reloc, /* special_function */
1429 "R_PPC_VLE_REL15", /* name */
1430 FALSE, /* partial_inplace */
1432 0xfe, /* dst_mask */
1433 TRUE), /* pcrel_offset */
1435 /* A relative 24 bit branch. */
1436 HOWTO (R_PPC_VLE_REL24, /* type */
1438 2, /* size (0 = byte, 1 = short, 2 = long) */
1440 TRUE, /* pc_relative */
1442 complain_overflow_signed, /* complain_on_overflow */
1443 bfd_elf_generic_reloc, /* special_function */
1444 "R_PPC_VLE_REL24", /* name */
1445 FALSE, /* partial_inplace */
1447 0x1fffffe, /* dst_mask */
1448 TRUE), /* pcrel_offset */
1450 /* The 16 LSBS in split16a format. */
1451 HOWTO (R_PPC_VLE_LO16A, /* type */
1453 2, /* size (0 = byte, 1 = short, 2 = long) */
1455 FALSE, /* pc_relative */
1457 complain_overflow_bitfield, /* complain_on_overflow */
1458 bfd_elf_generic_reloc, /* special_function */
1459 "R_PPC_VLE_LO16A", /* name */
1460 FALSE, /* partial_inplace */
1462 0x1f007ff, /* dst_mask */
1463 FALSE), /* pcrel_offset */
1465 /* The 16 LSBS in split16d format. */
1466 HOWTO (R_PPC_VLE_LO16D, /* type */
1468 2, /* size (0 = byte, 1 = short, 2 = long) */
1470 FALSE, /* pc_relative */
1472 complain_overflow_bitfield, /* complain_on_overflow */
1473 bfd_elf_generic_reloc, /* special_function */
1474 "R_PPC_VLE_LO16D", /* name */
1475 FALSE, /* partial_inplace */
1477 0x1f07ff, /* dst_mask */
1478 FALSE), /* pcrel_offset */
1480 /* Bits 16-31 split16a format. */
1481 HOWTO (R_PPC_VLE_HI16A, /* type */
1483 2, /* size (0 = byte, 1 = short, 2 = long) */
1485 FALSE, /* pc_relative */
1487 complain_overflow_bitfield, /* complain_on_overflow */
1488 bfd_elf_generic_reloc, /* special_function */
1489 "R_PPC_VLE_HI16A", /* name */
1490 FALSE, /* partial_inplace */
1492 0x1f007ff, /* dst_mask */
1493 FALSE), /* pcrel_offset */
1495 /* Bits 16-31 split16d format. */
1496 HOWTO (R_PPC_VLE_HI16D, /* type */
1498 2, /* size (0 = byte, 1 = short, 2 = long) */
1500 FALSE, /* pc_relative */
1502 complain_overflow_bitfield, /* complain_on_overflow */
1503 bfd_elf_generic_reloc, /* special_function */
1504 "R_PPC_VLE_HI16D", /* name */
1505 FALSE, /* partial_inplace */
1507 0x1f07ff, /* dst_mask */
1508 FALSE), /* pcrel_offset */
1510 /* Bits 16-31 (High Adjusted) in split16a format. */
1511 HOWTO (R_PPC_VLE_HA16A, /* type */
1513 2, /* size (0 = byte, 1 = short, 2 = long) */
1515 FALSE, /* pc_relative */
1517 complain_overflow_bitfield, /* complain_on_overflow */
1518 bfd_elf_generic_reloc, /* special_function */
1519 "R_PPC_VLE_HA16A", /* name */
1520 FALSE, /* partial_inplace */
1522 0x1f007ff, /* dst_mask */
1523 FALSE), /* pcrel_offset */
1525 /* Bits 16-31 (High Adjusted) in split16d format. */
1526 HOWTO (R_PPC_VLE_HA16D, /* type */
1528 2, /* size (0 = byte, 1 = short, 2 = long) */
1530 FALSE, /* pc_relative */
1532 complain_overflow_bitfield, /* complain_on_overflow */
1533 bfd_elf_generic_reloc, /* special_function */
1534 "R_PPC_VLE_HA16D", /* name */
1535 FALSE, /* partial_inplace */
1537 0x1f07ff, /* dst_mask */
1538 FALSE), /* pcrel_offset */
1540 /* This reloc does nothing. */
1541 HOWTO (R_PPC_VLE_SDA21, /* type */
1543 2, /* size (0 = byte, 1 = short, 2 = long) */
1545 FALSE, /* pc_relative */
1547 complain_overflow_bitfield, /* complain_on_overflow */
1548 bfd_elf_generic_reloc, /* special_function */
1549 "R_PPC_VLE_SDA21", /* name */
1550 FALSE, /* partial_inplace */
1552 0xffff, /* dst_mask */
1553 FALSE), /* pcrel_offset */
1555 /* This reloc does nothing. */
1556 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1558 2, /* size (0 = byte, 1 = short, 2 = long) */
1560 FALSE, /* pc_relative */
1562 complain_overflow_bitfield, /* complain_on_overflow */
1563 bfd_elf_generic_reloc, /* special_function */
1564 "R_PPC_VLE_SDA21_LO", /* name */
1565 FALSE, /* partial_inplace */
1568 FALSE), /* pcrel_offset */
1570 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1571 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1573 2, /* size (0 = byte, 1 = short, 2 = long) */
1575 FALSE, /* pc_relative */
1577 complain_overflow_bitfield, /* complain_on_overflow */
1578 bfd_elf_generic_reloc, /* special_function */
1579 "R_PPC_VLE_SDAREL_LO16A", /* name */
1580 FALSE, /* partial_inplace */
1582 0x1f007ff, /* dst_mask */
1583 FALSE), /* pcrel_offset */
1585 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1586 /* This reloc does nothing. */
1587 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1589 2, /* size (0 = byte, 1 = short, 2 = long) */
1591 FALSE, /* pc_relative */
1593 complain_overflow_bitfield, /* complain_on_overflow */
1594 bfd_elf_generic_reloc, /* special_function */
1595 "R_PPC_VLE_SDAREL_LO16D", /* name */
1596 FALSE, /* partial_inplace */
1598 0x1f07ff, /* dst_mask */
1599 FALSE), /* pcrel_offset */
1601 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1602 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1604 2, /* size (0 = byte, 1 = short, 2 = long) */
1606 FALSE, /* pc_relative */
1608 complain_overflow_bitfield, /* complain_on_overflow */
1609 bfd_elf_generic_reloc, /* special_function */
1610 "R_PPC_VLE_SDAREL_HI16A", /* name */
1611 FALSE, /* partial_inplace */
1613 0x1f007ff, /* dst_mask */
1614 FALSE), /* pcrel_offset */
1616 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1617 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1619 2, /* size (0 = byte, 1 = short, 2 = long) */
1621 FALSE, /* pc_relative */
1623 complain_overflow_bitfield, /* complain_on_overflow */
1624 bfd_elf_generic_reloc, /* special_function */
1625 "R_PPC_VLE_SDAREL_HI16D", /* name */
1626 FALSE, /* partial_inplace */
1628 0x1f07ff, /* dst_mask */
1629 FALSE), /* pcrel_offset */
1631 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1632 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1634 2, /* size (0 = byte, 1 = short, 2 = long) */
1636 FALSE, /* pc_relative */
1638 complain_overflow_bitfield, /* complain_on_overflow */
1639 bfd_elf_generic_reloc, /* special_function */
1640 "R_PPC_VLE_SDAREL_HA16A", /* name */
1641 FALSE, /* partial_inplace */
1643 0x1f007ff, /* dst_mask */
1644 FALSE), /* pcrel_offset */
1646 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1647 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1649 2, /* size (0 = byte, 1 = short, 2 = long) */
1651 FALSE, /* pc_relative */
1653 complain_overflow_bitfield, /* complain_on_overflow */
1654 bfd_elf_generic_reloc, /* special_function */
1655 "R_PPC_VLE_SDAREL_HA16D", /* name */
1656 FALSE, /* partial_inplace */
1658 0x1f07ff, /* dst_mask */
1659 FALSE), /* pcrel_offset */
1661 HOWTO (R_PPC_IRELATIVE, /* type */
1663 2, /* size (0 = byte, 1 = short, 2 = long) */
1665 FALSE, /* pc_relative */
1667 complain_overflow_bitfield, /* complain_on_overflow */
1668 bfd_elf_generic_reloc, /* special_function */
1669 "R_PPC_IRELATIVE", /* name */
1670 FALSE, /* partial_inplace */
1672 0xffffffff, /* dst_mask */
1673 FALSE), /* pcrel_offset */
1675 /* A 16 bit relative relocation. */
1676 HOWTO (R_PPC_REL16, /* type */
1678 1, /* size (0 = byte, 1 = short, 2 = long) */
1680 TRUE, /* pc_relative */
1682 complain_overflow_bitfield, /* complain_on_overflow */
1683 bfd_elf_generic_reloc, /* special_function */
1684 "R_PPC_REL16", /* name */
1685 FALSE, /* partial_inplace */
1687 0xffff, /* dst_mask */
1688 TRUE), /* pcrel_offset */
1690 /* A 16 bit relative relocation without overflow. */
1691 HOWTO (R_PPC_REL16_LO, /* type */
1693 1, /* size (0 = byte, 1 = short, 2 = long) */
1695 TRUE, /* pc_relative */
1697 complain_overflow_dont,/* complain_on_overflow */
1698 bfd_elf_generic_reloc, /* special_function */
1699 "R_PPC_REL16_LO", /* name */
1700 FALSE, /* partial_inplace */
1702 0xffff, /* dst_mask */
1703 TRUE), /* pcrel_offset */
1705 /* The high order 16 bits of a relative address. */
1706 HOWTO (R_PPC_REL16_HI, /* type */
1707 16, /* rightshift */
1708 1, /* size (0 = byte, 1 = short, 2 = long) */
1710 TRUE, /* pc_relative */
1712 complain_overflow_dont, /* complain_on_overflow */
1713 bfd_elf_generic_reloc, /* special_function */
1714 "R_PPC_REL16_HI", /* name */
1715 FALSE, /* partial_inplace */
1717 0xffff, /* dst_mask */
1718 TRUE), /* pcrel_offset */
1720 /* The high order 16 bits of a relative address, plus 1 if the contents of
1721 the low 16 bits, treated as a signed number, is negative. */
1722 HOWTO (R_PPC_REL16_HA, /* type */
1723 16, /* rightshift */
1724 1, /* size (0 = byte, 1 = short, 2 = long) */
1726 TRUE, /* pc_relative */
1728 complain_overflow_dont, /* complain_on_overflow */
1729 ppc_elf_addr16_ha_reloc, /* special_function */
1730 "R_PPC_REL16_HA", /* name */
1731 FALSE, /* partial_inplace */
1733 0xffff, /* dst_mask */
1734 TRUE), /* pcrel_offset */
1736 /* GNU extension to record C++ vtable hierarchy. */
1737 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1739 0, /* size (0 = byte, 1 = short, 2 = long) */
1741 FALSE, /* pc_relative */
1743 complain_overflow_dont, /* complain_on_overflow */
1744 NULL, /* special_function */
1745 "R_PPC_GNU_VTINHERIT", /* name */
1746 FALSE, /* partial_inplace */
1749 FALSE), /* pcrel_offset */
1751 /* GNU extension to record C++ vtable member usage. */
1752 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1754 0, /* size (0 = byte, 1 = short, 2 = long) */
1756 FALSE, /* pc_relative */
1758 complain_overflow_dont, /* complain_on_overflow */
1759 NULL, /* special_function */
1760 "R_PPC_GNU_VTENTRY", /* name */
1761 FALSE, /* partial_inplace */
1764 FALSE), /* pcrel_offset */
1766 /* Phony reloc to handle AIX style TOC entries. */
1767 HOWTO (R_PPC_TOC16, /* type */
1769 1, /* size (0 = byte, 1 = short, 2 = long) */
1771 FALSE, /* pc_relative */
1773 complain_overflow_signed, /* complain_on_overflow */
1774 bfd_elf_generic_reloc, /* special_function */
1775 "R_PPC_TOC16", /* name */
1776 FALSE, /* partial_inplace */
1778 0xffff, /* dst_mask */
1779 FALSE), /* pcrel_offset */
1782 /* External 32-bit PPC structure for PRPSINFO. This structure is
1783 ABI-defined, thus we choose to use char arrays here in order to
1784 avoid dealing with different types in different architectures.
1786 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1787 most non-PPC architectures use `short int'.
1789 This structure will ultimately be written in the corefile's note
1790 section, as the PRPSINFO. */
1792 struct elf_external_ppc_linux_prpsinfo32
1794 char pr_state; /* Numeric process state. */
1795 char pr_sname; /* Char for pr_state. */
1796 char pr_zomb; /* Zombie. */
1797 char pr_nice; /* Nice val. */
1798 char pr_flag[4]; /* Flags. */
1805 char pr_fname[16]; /* Filename of executable. */
1806 char pr_psargs[80]; /* Initial part of arg list. */
1809 /* Helper macro to swap (properly handling endianess) things from the
1810 `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32'
1813 Note that FROM should be a pointer, and TO should be the explicit type. */
1815 #define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \
1818 H_PUT_8 (abfd, from->pr_state, &to.pr_state); \
1819 H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \
1820 H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \
1821 H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \
1822 H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \
1823 H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \
1824 H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \
1825 H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \
1826 H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \
1827 H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \
1828 H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \
1829 strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \
1830 strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \
1834 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1837 ppc_elf_howto_init (void)
1839 unsigned int i, type;
1842 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1845 type = ppc_elf_howto_raw[i].type;
1846 if (type >= (sizeof (ppc_elf_howto_table)
1847 / sizeof (ppc_elf_howto_table[0])))
1849 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1853 static reloc_howto_type *
1854 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1855 bfd_reloc_code_real_type code)
1857 enum elf_ppc_reloc_type r;
1859 /* Initialize howto table if not already done. */
1860 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1861 ppc_elf_howto_init ();
1868 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1869 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1870 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1871 case BFD_RELOC_PPC64_ADDR16_DS:
1872 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1873 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1874 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1875 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1876 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1877 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1878 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1879 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1880 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1881 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1882 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1883 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1884 case BFD_RELOC_PPC64_GOT16_DS:
1885 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1886 case BFD_RELOC_PPC64_GOT16_LO_DS:
1887 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1888 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1889 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1890 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1891 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1892 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1893 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1894 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1895 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1896 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1897 case BFD_RELOC_PPC64_PLT16_LO_DS:
1898 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1899 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1900 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1901 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1902 case BFD_RELOC_PPC64_SECTOFF_DS:
1903 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1904 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1905 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1906 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1907 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1908 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1909 case BFD_RELOC_PPC64_TOC16_DS:
1910 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1911 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1912 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1913 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1914 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1915 case BFD_RELOC_PPC64_TPREL16_DS:
1916 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1917 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1918 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1919 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1920 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1921 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1922 case BFD_RELOC_PPC64_DTPREL16_DS:
1923 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1924 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1925 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1926 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1927 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1928 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1929 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1930 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1931 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1932 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1933 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1934 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1935 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1936 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1937 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1938 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1939 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1940 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1941 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1942 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1943 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1944 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1945 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1946 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1947 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1948 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1949 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1950 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1951 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1952 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1953 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1954 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1955 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1956 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1957 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1958 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1959 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1960 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1961 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1962 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1963 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1964 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1965 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1966 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1967 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1968 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1969 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1970 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1971 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1972 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1973 r = R_PPC_VLE_SDAREL_LO16A;
1975 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1976 r = R_PPC_VLE_SDAREL_LO16D;
1978 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1979 r = R_PPC_VLE_SDAREL_HI16A;
1981 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1982 r = R_PPC_VLE_SDAREL_HI16D;
1984 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1985 r = R_PPC_VLE_SDAREL_HA16A;
1987 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1988 r = R_PPC_VLE_SDAREL_HA16D;
1990 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1991 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1992 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1993 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1994 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1995 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1998 return ppc_elf_howto_table[r];
2001 static reloc_howto_type *
2002 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2008 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2010 if (ppc_elf_howto_raw[i].name != NULL
2011 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2012 return &ppc_elf_howto_raw[i];
2017 /* Set the howto pointer for a PowerPC ELF reloc. */
2020 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2022 Elf_Internal_Rela *dst)
2024 /* Initialize howto table if not already done. */
2025 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2026 ppc_elf_howto_init ();
2028 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
2029 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
2031 /* Just because the above assert didn't trigger doesn't mean that
2032 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2033 if (!cache_ptr->howto)
2035 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2036 abfd, ELF32_R_TYPE (dst->r_info));
2037 bfd_set_error (bfd_error_bad_value);
2039 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2043 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2045 static bfd_reloc_status_type
2046 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2047 arelent *reloc_entry,
2049 void *data ATTRIBUTE_UNUSED,
2050 asection *input_section,
2052 char **error_message ATTRIBUTE_UNUSED)
2056 if (output_bfd != NULL)
2058 reloc_entry->address += input_section->output_offset;
2059 return bfd_reloc_ok;
2062 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2063 return bfd_reloc_outofrange;
2065 if (bfd_is_com_section (symbol->section))
2068 relocation = symbol->value;
2070 relocation += symbol->section->output_section->vma;
2071 relocation += symbol->section->output_offset;
2072 relocation += reloc_entry->addend;
2073 if (reloc_entry->howto->pc_relative)
2074 relocation -= reloc_entry->address;
2076 reloc_entry->addend += (relocation & 0x8000) << 1;
2078 return bfd_reloc_continue;
2081 static bfd_reloc_status_type
2082 ppc_elf_unhandled_reloc (bfd *abfd,
2083 arelent *reloc_entry,
2086 asection *input_section,
2088 char **error_message)
2090 /* If this is a relocatable link (output_bfd test tells us), just
2091 call the generic function. Any adjustment will be done at final
2093 if (output_bfd != NULL)
2094 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2095 input_section, output_bfd, error_message);
2097 if (error_message != NULL)
2099 static char buf[60];
2100 sprintf (buf, _("generic linker can't handle %s"),
2101 reloc_entry->howto->name);
2102 *error_message = buf;
2104 return bfd_reloc_dangerous;
2107 /* Sections created by the linker. */
2109 typedef struct elf_linker_section
2111 /* Pointer to the bfd section. */
2115 /* Associated bss section name. */
2116 const char *bss_name;
2117 /* Associated symbol name. */
2118 const char *sym_name;
2119 /* Associated symbol. */
2120 struct elf_link_hash_entry *sym;
2121 } elf_linker_section_t;
2123 /* Linked list of allocated pointer entries. This hangs off of the
2124 symbol lists, and provides allows us to return different pointers,
2125 based on different addend's. */
2127 typedef struct elf_linker_section_pointers
2129 /* next allocated pointer for this symbol */
2130 struct elf_linker_section_pointers *next;
2131 /* offset of pointer from beginning of section */
2135 /* which linker section this is */
2136 elf_linker_section_t *lsect;
2137 } elf_linker_section_pointers_t;
2139 struct ppc_elf_obj_tdata
2141 struct elf_obj_tdata elf;
2143 /* A mapping from local symbols to offsets into the various linker
2144 sections added. This is index by the symbol index. */
2145 elf_linker_section_pointers_t **linker_section_pointers;
2147 /* Flags used to auto-detect plt type. */
2148 unsigned int makes_plt_call : 1;
2149 unsigned int has_rel16 : 1;
2152 #define ppc_elf_tdata(bfd) \
2153 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2155 #define elf_local_ptr_offsets(bfd) \
2156 (ppc_elf_tdata (bfd)->linker_section_pointers)
2158 #define is_ppc_elf(bfd) \
2159 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2160 && elf_object_id (bfd) == PPC32_ELF_DATA)
2162 /* Override the generic function because we store some extras. */
2165 ppc_elf_mkobject (bfd *abfd)
2167 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2171 /* Fix bad default arch selected for a 32 bit input bfd when the
2172 default is 64 bit. */
2175 ppc_elf_object_p (bfd *abfd)
2177 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2179 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2181 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2183 /* Relies on arch after 64 bit default being 32 bit default. */
2184 abfd->arch_info = abfd->arch_info->next;
2185 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2191 /* Function to set whether a module needs the -mrelocatable bit set. */
2194 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2196 BFD_ASSERT (!elf_flags_init (abfd)
2197 || elf_elfheader (abfd)->e_flags == flags);
2199 elf_elfheader (abfd)->e_flags = flags;
2200 elf_flags_init (abfd) = TRUE;
2204 /* Support for core dump NOTE sections. */
2207 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2212 switch (note->descsz)
2217 case 268: /* Linux/PPC. */
2219 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2222 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2231 /* Make a ".reg/999" section. */
2232 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2233 size, note->descpos + offset);
2237 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2239 switch (note->descsz)
2244 case 128: /* Linux/PPC elf_prpsinfo. */
2245 elf_tdata (abfd)->core->pid
2246 = bfd_get_32 (abfd, note->descdata + 16);
2247 elf_tdata (abfd)->core->program
2248 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2249 elf_tdata (abfd)->core->command
2250 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2253 /* Note that for some reason, a spurious space is tacked
2254 onto the end of the args in some (at least one anyway)
2255 implementations, so strip it off if it exists. */
2258 char *command = elf_tdata (abfd)->core->command;
2259 int n = strlen (command);
2261 if (0 < n && command[n - 1] == ' ')
2262 command[n - 1] = '\0';
2269 elfcore_write_ppc_linux_prpsinfo32 (bfd *abfd, char *buf, int *bufsiz,
2270 const struct elf_internal_linux_prpsinfo *prpsinfo)
2272 struct elf_external_ppc_linux_prpsinfo32 data;
2274 memset (&data, 0, sizeof (data));
2275 PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd, prpsinfo, data);
2277 return elfcore_write_note (abfd, buf, bufsiz,
2278 "CORE", NT_PRPSINFO, &data, sizeof (data));
2282 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2294 va_start (ap, note_type);
2295 memset (data, 0, sizeof (data));
2296 strncpy (data + 32, va_arg (ap, const char *), 16);
2297 strncpy (data + 48, va_arg (ap, const char *), 80);
2299 return elfcore_write_note (abfd, buf, bufsiz,
2300 "CORE", note_type, data, sizeof (data));
2311 va_start (ap, note_type);
2312 memset (data, 0, 72);
2313 pid = va_arg (ap, long);
2314 bfd_put_32 (abfd, pid, data + 24);
2315 cursig = va_arg (ap, int);
2316 bfd_put_16 (abfd, cursig, data + 12);
2317 greg = va_arg (ap, const void *);
2318 memcpy (data + 72, greg, 192);
2319 memset (data + 264, 0, 4);
2321 return elfcore_write_note (abfd, buf, bufsiz,
2322 "CORE", note_type, data, sizeof (data));
2328 ppc_elf_lookup_section_flags (char *flag_name)
2331 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2337 /* Add the VLE flag if required. */
2340 ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2342 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2343 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2344 shdr->sh_flags |= SHF_PPC_VLE;
2349 /* Return address for Ith PLT stub in section PLT, for relocation REL
2350 or (bfd_vma) -1 if it should not be included. */
2353 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2354 const asection *plt ATTRIBUTE_UNUSED,
2357 return rel->address;
2360 /* Handle a PowerPC specific section when reading an object file. This
2361 is called when bfd_section_from_shdr finds a section with an unknown
2365 ppc_elf_section_from_shdr (bfd *abfd,
2366 Elf_Internal_Shdr *hdr,
2373 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2376 newsect = hdr->bfd_section;
2377 flags = bfd_get_section_flags (abfd, newsect);
2378 if (hdr->sh_flags & SHF_EXCLUDE)
2379 flags |= SEC_EXCLUDE;
2381 if (hdr->sh_type == SHT_ORDERED)
2382 flags |= SEC_SORT_ENTRIES;
2384 bfd_set_section_flags (abfd, newsect, flags);
2388 /* Set up any other section flags and such that may be necessary. */
2391 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2392 Elf_Internal_Shdr *shdr,
2395 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2396 shdr->sh_type = SHT_ORDERED;
2401 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2402 need to bump up the number of section headers. */
2405 ppc_elf_additional_program_headers (bfd *abfd,
2406 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2411 s = bfd_get_section_by_name (abfd, ".sbss2");
2412 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2415 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2416 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2422 /* Modify the segment map for VLE executables. */
2425 ppc_elf_modify_segment_map (bfd *abfd,
2426 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2428 struct elf_segment_map *m, *n;
2431 bfd_boolean sect0_vle, sectj_vle;
2433 /* At this point in the link, output sections have already been sorted by
2434 LMA and assigned to segments. All that is left to do is to ensure
2435 there is no mixing of VLE & non-VLE sections in a text segment.
2436 If we find that case, we split the segment.
2437 We maintain the original output section order. */
2439 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2444 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
2445 for (j = 1; j < m->count; ++j)
2447 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2449 if (sectj_vle != sect0_vle)
2455 /* sections 0..j-1 stay in this (current) segment,
2456 the remainder are put in a new segment.
2457 The scan resumes with the new segment. */
2459 /* Fix the new segment. */
2460 amt = sizeof (struct elf_segment_map);
2461 amt += (m->count - j - 1) * sizeof (asection *);
2462 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2466 n->p_type = PT_LOAD;
2467 n->p_flags = PF_X | PF_R;
2469 n->p_flags |= PF_PPC_VLE;
2470 n->count = m->count - j;
2471 for (k = 0; k < n->count; ++k)
2473 n->sections[k] = m->sections[j+k];
2474 m->sections[j+k] = NULL;
2479 /* Fix the current segment */
2486 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2487 .PPC.EMB.sbss0 a normal section, and not a bss section so
2488 that the linker doesn't crater when trying to make more than
2491 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2493 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2494 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2495 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2496 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2497 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2498 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2499 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2500 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2501 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2502 { NULL, 0, 0, 0, 0 }
2505 /* This is what we want for new plt/got. */
2506 static struct bfd_elf_special_section ppc_alt_plt =
2507 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2509 static const struct bfd_elf_special_section *
2510 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2512 const struct bfd_elf_special_section *ssect;
2514 /* See if this is one of the special sections. */
2515 if (sec->name == NULL)
2518 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2522 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2523 ssect = &ppc_alt_plt;
2527 return _bfd_elf_get_sec_type_attr (abfd, sec);
2530 /* Very simple linked list structure for recording apuinfo values. */
2531 typedef struct apuinfo_list
2533 struct apuinfo_list *next;
2534 unsigned long value;
2538 static apuinfo_list *head;
2539 static bfd_boolean apuinfo_set;
2542 apuinfo_list_init (void)
2545 apuinfo_set = FALSE;
2549 apuinfo_list_add (unsigned long value)
2551 apuinfo_list *entry = head;
2553 while (entry != NULL)
2555 if (entry->value == value)
2557 entry = entry->next;
2560 entry = bfd_malloc (sizeof (* entry));
2564 entry->value = value;
2570 apuinfo_list_length (void)
2572 apuinfo_list *entry;
2573 unsigned long count;
2575 for (entry = head, count = 0;
2577 entry = entry->next)
2583 static inline unsigned long
2584 apuinfo_list_element (unsigned long number)
2586 apuinfo_list * entry;
2590 entry = entry->next)
2593 return entry ? entry->value : 0;
2597 apuinfo_list_finish (void)
2599 apuinfo_list *entry;
2601 for (entry = head; entry;)
2603 apuinfo_list *next = entry->next;
2611 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2612 #define APUINFO_LABEL "APUinfo"
2614 /* Scan the input BFDs and create a linked list of
2615 the APUinfo values that will need to be emitted. */
2618 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2622 char *buffer = NULL;
2623 bfd_size_type largest_input_size = 0;
2625 unsigned long length;
2626 const char *error_message = NULL;
2628 if (link_info == NULL)
2631 apuinfo_list_init ();
2633 /* Read in the input sections contents. */
2634 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2636 unsigned long datum;
2638 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2642 error_message = _("corrupt %s section in %B");
2643 length = asec->size;
2648 if (largest_input_size < asec->size)
2652 largest_input_size = asec->size;
2653 buffer = bfd_malloc (largest_input_size);
2658 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2659 || (bfd_bread (buffer, length, ibfd) != length))
2661 error_message = _("unable to read in %s section from %B");
2665 /* Verify the contents of the header. Note - we have to
2666 extract the values this way in order to allow for a
2667 host whose endian-ness is different from the target. */
2668 datum = bfd_get_32 (ibfd, buffer);
2669 if (datum != sizeof APUINFO_LABEL)
2672 datum = bfd_get_32 (ibfd, buffer + 8);
2676 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2679 /* Get the number of bytes used for apuinfo entries. */
2680 datum = bfd_get_32 (ibfd, buffer + 4);
2681 if (datum + 20 != length)
2684 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2685 for (i = 0; i < datum; i += 4)
2686 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2689 error_message = NULL;
2693 /* Compute the size of the output section. */
2694 unsigned num_entries = apuinfo_list_length ();
2696 /* Set the output section size, if it exists. */
2697 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2699 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2702 error_message = _("warning: unable to set size of %s section in %B");
2711 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2714 /* Prevent the output section from accumulating the input sections'
2715 contents. We have already stored this in our linked list structure. */
2718 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2719 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2721 bfd_byte *contents ATTRIBUTE_UNUSED)
2723 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2726 /* Finally we can generate the output section. */
2729 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2734 unsigned num_entries;
2735 bfd_size_type length;
2737 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2744 length = asec->size;
2748 buffer = bfd_malloc (length);
2751 (*_bfd_error_handler)
2752 (_("failed to allocate space for new APUinfo section."));
2756 /* Create the apuinfo header. */
2757 num_entries = apuinfo_list_length ();
2758 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2759 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2760 bfd_put_32 (abfd, 0x2, buffer + 8);
2761 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2764 for (i = 0; i < num_entries; i++)
2766 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2770 if (length != asec->size)
2771 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2773 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2774 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2778 apuinfo_list_finish ();
2782 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2784 bfd_byte buf[GLINK_ENTRY_SIZE];
2786 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2789 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2790 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2791 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2792 && bfd_get_32 (abfd, buf + 12) == BCTR);
2796 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2798 bfd_vma vma = *(bfd_vma *) ptr;
2799 return ((section->flags & SEC_ALLOC) != 0
2800 && section->vma <= vma
2801 && vma < section->vma + section->size);
2805 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2806 long dynsymcount, asymbol **dynsyms,
2809 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2810 asection *plt, *relplt, *dynamic, *glink;
2811 bfd_vma glink_vma = 0;
2812 bfd_vma resolv_vma = 0;
2823 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2826 if (dynsymcount <= 0)
2829 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2833 plt = bfd_get_section_by_name (abfd, ".plt");
2837 /* Call common code to handle old-style executable PLTs. */
2838 if (elf_section_flags (plt) & SHF_EXECINSTR)
2839 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2840 dynsymcount, dynsyms, ret);
2842 /* If this object was prelinked, the prelinker stored the address
2843 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2844 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2845 if (dynamic != NULL)
2847 bfd_byte *dynbuf, *extdyn, *extdynend;
2849 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2851 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2854 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2855 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2858 extdynend = extdyn + dynamic->size;
2859 for (; extdyn < extdynend; extdyn += extdynsize)
2861 Elf_Internal_Dyn dyn;
2862 (*swap_dyn_in) (abfd, extdyn, &dyn);
2864 if (dyn.d_tag == DT_NULL)
2867 if (dyn.d_tag == DT_PPC_GOT)
2869 unsigned int g_o_t = dyn.d_un.d_val;
2870 asection *got = bfd_get_section_by_name (abfd, ".got");
2872 && bfd_get_section_contents (abfd, got, buf,
2873 g_o_t - got->vma + 4, 4))
2874 glink_vma = bfd_get_32 (abfd, buf);
2881 /* Otherwise we read the first plt entry. */
2884 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2885 glink_vma = bfd_get_32 (abfd, buf);
2891 /* The .glink section usually does not survive the final
2892 link; search for the section (usually .text) where the
2893 glink stubs now reside. */
2894 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2898 /* Determine glink PLT resolver by reading the relative branch
2899 from the first glink stub. */
2900 if (bfd_get_section_contents (abfd, glink, buf,
2901 glink_vma - glink->vma, 4))
2903 unsigned int insn = bfd_get_32 (abfd, buf);
2905 /* The first glink stub may either branch to the resolver ... */
2907 if ((insn & ~0x3fffffc) == 0)
2908 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2910 /* ... or fall through a bunch of NOPs. */
2911 else if ((insn ^ B ^ NOP) == 0)
2913 bfd_get_section_contents (abfd, glink, buf,
2914 glink_vma - glink->vma + i, 4);
2916 if (bfd_get_32 (abfd, buf) != NOP)
2918 resolv_vma = glink_vma + i;
2923 count = relplt->size / sizeof (Elf32_External_Rela);
2924 stub_vma = glink_vma - (bfd_vma) count * 16;
2925 /* If the stubs are those for -shared/-pie then we might have
2926 multiple stubs for each plt entry. If that is the case then
2927 there is no way to associate stubs with their plt entries short
2928 of figuring out the GOT pointer value used in the stub. */
2929 if (!is_nonpic_glink_stub (abfd, glink,
2930 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2933 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2934 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2937 size = count * sizeof (asymbol);
2938 p = relplt->relocation;
2939 for (i = 0; i < count; i++, p++)
2941 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2943 size += sizeof ("+0x") - 1 + 8;
2946 size += sizeof (asymbol) + sizeof ("__glink");
2949 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2951 s = *ret = bfd_malloc (size);
2955 names = (char *) (s + count + 1 + (resolv_vma != 0));
2956 p = relplt->relocation;
2957 for (i = 0; i < count; i++, p++)
2961 *s = **p->sym_ptr_ptr;
2962 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2963 we are defining a symbol, ensure one of them is set. */
2964 if ((s->flags & BSF_LOCAL) == 0)
2965 s->flags |= BSF_GLOBAL;
2966 s->flags |= BSF_SYNTHETIC;
2968 s->value = stub_vma - glink->vma;
2971 len = strlen ((*p->sym_ptr_ptr)->name);
2972 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2976 memcpy (names, "+0x", sizeof ("+0x") - 1);
2977 names += sizeof ("+0x") - 1;
2978 bfd_sprintf_vma (abfd, names, p->addend);
2979 names += strlen (names);
2981 memcpy (names, "@plt", sizeof ("@plt"));
2982 names += sizeof ("@plt");
2987 /* Add a symbol at the start of the glink branch table. */
2988 memset (s, 0, sizeof *s);
2990 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2992 s->value = glink_vma - glink->vma;
2994 memcpy (names, "__glink", sizeof ("__glink"));
2995 names += sizeof ("__glink");
3001 /* Add a symbol for the glink PLT resolver. */
3002 memset (s, 0, sizeof *s);
3004 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3006 s->value = resolv_vma - glink->vma;
3008 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3009 names += sizeof ("__glink_PLTresolve");
3017 /* The following functions are specific to the ELF linker, while
3018 functions above are used generally. They appear in this file more
3019 or less in the order in which they are called. eg.
3020 ppc_elf_check_relocs is called early in the link process,
3021 ppc_elf_finish_dynamic_sections is one of the last functions
3024 /* Track PLT entries needed for a given symbol. We might need more
3025 than one glink entry per symbol when generating a pic binary. */
3028 struct plt_entry *next;
3030 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3031 This field stores the offset into .got2 used to initialise the
3032 GOT pointer reg. It will always be at least 32768. (Current
3033 gcc always uses an offset of 32768, but ld -r will pack .got2
3034 sections together resulting in larger offsets). */
3037 /* The .got2 section. */
3040 /* PLT refcount or offset. */
3043 bfd_signed_vma refcount;
3047 /* .glink stub offset. */
3048 bfd_vma glink_offset;
3051 /* Of those relocs that might be copied as dynamic relocs, this function
3052 selects those that must be copied when linking a shared library,
3053 even when the symbol is local. */
3056 must_be_dyn_reloc (struct bfd_link_info *info,
3057 enum elf_ppc_reloc_type r_type)
3066 case R_PPC_REL14_BRTAKEN:
3067 case R_PPC_REL14_BRNTAKEN:
3073 case R_PPC_TPREL16_LO:
3074 case R_PPC_TPREL16_HI:
3075 case R_PPC_TPREL16_HA:
3076 return !info->executable;
3080 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3081 copying dynamic variables from a shared lib into an app's dynbss
3082 section, and instead use a dynamic relocation to point into the
3084 #define ELIMINATE_COPY_RELOCS 1
3086 /* Used to track dynamic relocations for local symbols. */
3087 struct ppc_dyn_relocs
3089 struct ppc_dyn_relocs *next;
3091 /* The input section of the reloc. */
3094 /* Total number of relocs copied for the input section. */
3095 unsigned int count : 31;
3097 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3098 unsigned int ifunc : 1;
3101 /* PPC ELF linker hash entry. */
3103 struct ppc_elf_link_hash_entry
3105 struct elf_link_hash_entry elf;
3107 /* If this symbol is used in the linker created sections, the processor
3108 specific backend uses this field to map the field into the offset
3109 from the beginning of the section. */
3110 elf_linker_section_pointers_t *linker_section_pointer;
3112 /* Track dynamic relocs copied for this symbol. */
3113 struct elf_dyn_relocs *dyn_relocs;
3115 /* Contexts in which symbol is used in the GOT (or TOC).
3116 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3117 corresponding relocs are encountered during check_relocs.
3118 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3119 indicate the corresponding GOT entry type is not needed. */
3120 #define TLS_GD 1 /* GD reloc. */
3121 #define TLS_LD 2 /* LD reloc. */
3122 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3123 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3124 #define TLS_TLS 16 /* Any TLS reloc. */
3125 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3126 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3129 /* Nonzero if we have seen a small data relocation referring to this
3131 unsigned char has_sda_refs;
3134 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3136 /* PPC ELF linker hash table. */
3138 struct ppc_elf_link_hash_table
3140 struct elf_link_hash_table elf;
3142 /* Various options passed from the linker. */
3143 struct ppc_elf_params *params;
3145 /* Short-cuts to get to dynamic linker sections. */
3157 elf_linker_section_t sdata[2];
3159 asection *glink_eh_frame;
3161 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3164 /* The .got.plt section (VxWorks only)*/
3167 /* Shortcut to __tls_get_addr. */
3168 struct elf_link_hash_entry *tls_get_addr;
3170 /* The bfd that forced an old-style PLT. */
3173 /* TLS local dynamic got entry handling. */
3175 bfd_signed_vma refcount;
3179 /* Offset of branch table to PltResolve function in glink. */
3180 bfd_vma glink_pltresolve;
3182 /* Size of reserved GOT entries. */
3183 unsigned int got_header_size;
3184 /* Non-zero if allocating the header left a gap. */
3185 unsigned int got_gap;
3187 /* The type of PLT we have chosen to use. */
3188 enum ppc_elf_plt_type plt_type;
3190 /* True if the target system is VxWorks. */
3191 unsigned int is_vxworks:1;
3193 /* The size of PLT entries. */
3195 /* The distance between adjacent PLT slots. */
3197 /* The size of the first PLT entry. */
3198 int plt_initial_entry_size;
3200 /* Small local sym cache. */
3201 struct sym_cache sym_cache;
3204 /* Rename some of the generic section flags to better document how they
3205 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3207 /* Nonzero if this section has TLS related relocations. */
3208 #define has_tls_reloc sec_flg0
3210 /* Nonzero if this section has a call to __tls_get_addr. */
3211 #define has_tls_get_addr_call sec_flg1
3213 /* Get the PPC ELF linker hash table from a link_info structure. */
3215 #define ppc_elf_hash_table(p) \
3216 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3217 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3219 /* Create an entry in a PPC ELF linker hash table. */
3221 static struct bfd_hash_entry *
3222 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3223 struct bfd_hash_table *table,
3226 /* Allocate the structure if it has not already been allocated by a
3230 entry = bfd_hash_allocate (table,
3231 sizeof (struct ppc_elf_link_hash_entry));
3236 /* Call the allocation method of the superclass. */
3237 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3240 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3241 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3242 ppc_elf_hash_entry (entry)->tls_mask = 0;
3243 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3249 /* Create a PPC ELF linker hash table. */
3251 static struct bfd_link_hash_table *
3252 ppc_elf_link_hash_table_create (bfd *abfd)
3254 struct ppc_elf_link_hash_table *ret;
3256 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3260 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3261 ppc_elf_link_hash_newfunc,
3262 sizeof (struct ppc_elf_link_hash_entry),
3269 ret->elf.init_plt_refcount.refcount = 0;
3270 ret->elf.init_plt_refcount.glist = NULL;
3271 ret->elf.init_plt_offset.offset = 0;
3272 ret->elf.init_plt_offset.glist = NULL;
3274 ret->sdata[0].name = ".sdata";
3275 ret->sdata[0].sym_name = "_SDA_BASE_";
3276 ret->sdata[0].bss_name = ".sbss";
3278 ret->sdata[1].name = ".sdata2";
3279 ret->sdata[1].sym_name = "_SDA2_BASE_";
3280 ret->sdata[1].bss_name = ".sbss2";
3282 ret->plt_entry_size = 12;
3283 ret->plt_slot_size = 8;
3284 ret->plt_initial_entry_size = 72;
3286 return &ret->elf.root;
3289 /* Hook linker params into hash table. */
3292 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3294 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3297 htab->params = params;
3300 /* Create .got and the related sections. */
3303 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3305 struct ppc_elf_link_hash_table *htab;
3309 if (!_bfd_elf_create_got_section (abfd, info))
3312 htab = ppc_elf_hash_table (info);
3313 htab->got = s = bfd_get_linker_section (abfd, ".got");
3317 if (htab->is_vxworks)
3319 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3325 /* The powerpc .got has a blrl instruction in it. Mark it
3327 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3328 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3329 if (!bfd_set_section_flags (abfd, s, flags))
3333 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3341 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3343 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3347 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3348 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3349 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3352 || !bfd_set_section_alignment (abfd, s,
3353 htab->params->ppc476_workaround ? 6 : 4))
3356 if (!info->no_ld_generated_unwind_info)
3358 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3359 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3360 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3361 htab->glink_eh_frame = s;
3363 || !bfd_set_section_alignment (abfd, s, 2))
3367 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3368 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3371 || !bfd_set_section_alignment (abfd, s, 4))
3374 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3375 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3376 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3379 || ! bfd_set_section_alignment (abfd, s, 2))
3384 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3385 to output sections (just like _bfd_elf_create_dynamic_sections has
3386 to create .dynbss and .rela.bss). */
3389 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3391 struct ppc_elf_link_hash_table *htab;
3395 htab = ppc_elf_hash_table (info);
3397 if (htab->got == NULL
3398 && !ppc_elf_create_got (abfd, info))
3401 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3404 if (htab->glink == NULL
3405 && !ppc_elf_create_glink (abfd, info))
3408 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3409 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3410 SEC_ALLOC | SEC_LINKER_CREATED);
3417 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3418 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3419 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3420 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3423 || ! bfd_set_section_alignment (abfd, s, 2))
3427 if (htab->is_vxworks
3428 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3431 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3432 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3436 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3437 if (htab->plt_type == PLT_VXWORKS)
3438 /* The VxWorks PLT is a loaded section with contents. */
3439 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3440 return bfd_set_section_flags (abfd, s, flags);
3443 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3446 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3447 struct elf_link_hash_entry *dir,
3448 struct elf_link_hash_entry *ind)
3450 struct ppc_elf_link_hash_entry *edir, *eind;
3452 edir = (struct ppc_elf_link_hash_entry *) dir;
3453 eind = (struct ppc_elf_link_hash_entry *) ind;
3455 edir->tls_mask |= eind->tls_mask;
3456 edir->has_sda_refs |= eind->has_sda_refs;
3458 /* If called to transfer flags for a weakdef during processing
3459 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3460 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3461 if (!(ELIMINATE_COPY_RELOCS
3462 && eind->elf.root.type != bfd_link_hash_indirect
3463 && edir->elf.dynamic_adjusted))
3464 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3466 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3467 edir->elf.ref_regular |= eind->elf.ref_regular;
3468 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3469 edir->elf.needs_plt |= eind->elf.needs_plt;
3470 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3472 if (eind->dyn_relocs != NULL)
3474 if (edir->dyn_relocs != NULL)
3476 struct elf_dyn_relocs **pp;
3477 struct elf_dyn_relocs *p;
3479 /* Add reloc counts against the indirect sym to the direct sym
3480 list. Merge any entries against the same section. */
3481 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3483 struct elf_dyn_relocs *q;
3485 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3486 if (q->sec == p->sec)
3488 q->pc_count += p->pc_count;
3489 q->count += p->count;
3496 *pp = edir->dyn_relocs;
3499 edir->dyn_relocs = eind->dyn_relocs;
3500 eind->dyn_relocs = NULL;
3503 /* If we were called to copy over info for a weak sym, that's all.
3504 You might think dyn_relocs need not be copied over; After all,
3505 both syms will be dynamic or both non-dynamic so we're just
3506 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3507 code in ppc_elf_adjust_dynamic_symbol needs to check for
3508 dyn_relocs in read-only sections, and it does so on what is the
3510 if (eind->elf.root.type != bfd_link_hash_indirect)
3513 /* Copy over the GOT refcount entries that we may have already seen to
3514 the symbol which just became indirect. */
3515 edir->elf.got.refcount += eind->elf.got.refcount;
3516 eind->elf.got.refcount = 0;
3518 /* And plt entries. */
3519 if (eind->elf.plt.plist != NULL)
3521 if (edir->elf.plt.plist != NULL)
3523 struct plt_entry **entp;
3524 struct plt_entry *ent;
3526 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3528 struct plt_entry *dent;
3530 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3531 if (dent->sec == ent->sec && dent->addend == ent->addend)
3533 dent->plt.refcount += ent->plt.refcount;
3540 *entp = edir->elf.plt.plist;
3543 edir->elf.plt.plist = eind->elf.plt.plist;
3544 eind->elf.plt.plist = NULL;
3547 if (eind->elf.dynindx != -1)
3549 if (edir->elf.dynindx != -1)
3550 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3551 edir->elf.dynstr_index);
3552 edir->elf.dynindx = eind->elf.dynindx;
3553 edir->elf.dynstr_index = eind->elf.dynstr_index;
3554 eind->elf.dynindx = -1;
3555 eind->elf.dynstr_index = 0;
3559 /* Hook called by the linker routine which adds symbols from an object
3560 file. We use it to put .comm items in .sbss, and not .bss. */
3563 ppc_elf_add_symbol_hook (bfd *abfd,
3564 struct bfd_link_info *info,
3565 Elf_Internal_Sym *sym,
3566 const char **namep ATTRIBUTE_UNUSED,
3567 flagword *flagsp ATTRIBUTE_UNUSED,
3571 if (sym->st_shndx == SHN_COMMON
3572 && !info->relocatable
3573 && is_ppc_elf (info->output_bfd)
3574 && sym->st_size <= elf_gp_size (abfd))
3576 /* Common symbols less than or equal to -G nn bytes are automatically
3578 struct ppc_elf_link_hash_table *htab;
3580 htab = ppc_elf_hash_table (info);
3581 if (htab->sbss == NULL)
3583 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3585 if (!htab->elf.dynobj)
3586 htab->elf.dynobj = abfd;
3588 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3591 if (htab->sbss == NULL)
3596 *valp = sym->st_size;
3599 if ((abfd->flags & DYNAMIC) == 0
3600 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3601 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3602 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3608 create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3610 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3612 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3614 if (lsect->sym == NULL)
3616 if (lsect->sym->root.type == bfd_link_hash_new)
3617 lsect->sym->non_elf = 0;
3618 lsect->sym->ref_regular = 1;
3619 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3623 /* Create a special linker section. */
3626 ppc_elf_create_linker_section (bfd *abfd,
3627 struct bfd_link_info *info,
3629 elf_linker_section_t *lsect)
3631 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3634 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3635 | SEC_LINKER_CREATED);
3637 /* Record the first bfd that needs the special sections. */
3638 if (!htab->elf.dynobj)
3639 htab->elf.dynobj = abfd;
3641 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3645 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3649 return create_sdata_sym (info, lsect);
3652 /* Find a linker generated pointer with a given addend and type. */
3654 static elf_linker_section_pointers_t *
3655 elf_find_pointer_linker_section
3656 (elf_linker_section_pointers_t *linker_pointers,
3658 elf_linker_section_t *lsect)
3660 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3661 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3662 return linker_pointers;
3667 /* Allocate a pointer to live in a linker created section. */
3670 elf_create_pointer_linker_section (bfd *abfd,
3671 elf_linker_section_t *lsect,
3672 struct elf_link_hash_entry *h,
3673 const Elf_Internal_Rela *rel)
3675 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3676 elf_linker_section_pointers_t *linker_section_ptr;
3677 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3680 BFD_ASSERT (lsect != NULL);
3682 /* Is this a global symbol? */
3685 struct ppc_elf_link_hash_entry *eh;
3687 /* Has this symbol already been allocated? If so, our work is done. */
3688 eh = (struct ppc_elf_link_hash_entry *) h;
3689 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3694 ptr_linker_section_ptr = &eh->linker_section_pointer;
3698 BFD_ASSERT (is_ppc_elf (abfd));
3700 /* Allocation of a pointer to a local symbol. */
3701 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3703 /* Allocate a table to hold the local symbols if first time. */
3706 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3709 amt *= sizeof (elf_linker_section_pointers_t *);
3710 ptr = bfd_zalloc (abfd, amt);
3715 elf_local_ptr_offsets (abfd) = ptr;
3718 /* Has this symbol already been allocated? If so, our work is done. */
3719 if (elf_find_pointer_linker_section (ptr[r_symndx],
3724 ptr_linker_section_ptr = &ptr[r_symndx];
3727 /* Allocate space for a pointer in the linker section, and allocate
3728 a new pointer record from internal memory. */
3729 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3730 amt = sizeof (elf_linker_section_pointers_t);
3731 linker_section_ptr = bfd_alloc (abfd, amt);
3733 if (!linker_section_ptr)
3736 linker_section_ptr->next = *ptr_linker_section_ptr;
3737 linker_section_ptr->addend = rel->r_addend;
3738 linker_section_ptr->lsect = lsect;
3739 *ptr_linker_section_ptr = linker_section_ptr;
3741 linker_section_ptr->offset = lsect->section->size;
3742 lsect->section->size += 4;
3746 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3747 lsect->name, (long) linker_section_ptr->offset,
3748 (long) lsect->section->size);
3754 static struct plt_entry **
3755 update_local_sym_info (bfd *abfd,
3756 Elf_Internal_Shdr *symtab_hdr,
3757 unsigned long r_symndx,
3760 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3761 struct plt_entry **local_plt;
3762 char *local_got_tls_masks;
3764 if (local_got_refcounts == NULL)
3766 bfd_size_type size = symtab_hdr->sh_info;
3768 size *= (sizeof (*local_got_refcounts)
3769 + sizeof (*local_plt)
3770 + sizeof (*local_got_tls_masks));
3771 local_got_refcounts = bfd_zalloc (abfd, size);
3772 if (local_got_refcounts == NULL)
3774 elf_local_got_refcounts (abfd) = local_got_refcounts;
3777 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3778 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3779 local_got_tls_masks[r_symndx] |= tls_type;
3780 if (tls_type != PLT_IFUNC)
3781 local_got_refcounts[r_symndx] += 1;
3782 return local_plt + r_symndx;
3786 update_plt_info (bfd *abfd, struct plt_entry **plist,
3787 asection *sec, bfd_vma addend)
3789 struct plt_entry *ent;
3793 for (ent = *plist; ent != NULL; ent = ent->next)
3794 if (ent->sec == sec && ent->addend == addend)
3798 bfd_size_type amt = sizeof (*ent);
3799 ent = bfd_alloc (abfd, amt);
3804 ent->addend = addend;
3805 ent->plt.refcount = 0;
3808 ent->plt.refcount += 1;
3812 static struct plt_entry *
3813 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3815 struct plt_entry *ent;
3819 for (ent = *plist; ent != NULL; ent = ent->next)
3820 if (ent->sec == sec && ent->addend == addend)
3826 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3828 return (r_type == R_PPC_PLTREL24
3829 || r_type == R_PPC_LOCAL24PC
3830 || r_type == R_PPC_REL24
3831 || r_type == R_PPC_REL14
3832 || r_type == R_PPC_REL14_BRTAKEN
3833 || r_type == R_PPC_REL14_BRNTAKEN
3834 || r_type == R_PPC_ADDR24
3835 || r_type == R_PPC_ADDR14
3836 || r_type == R_PPC_ADDR14_BRTAKEN
3837 || r_type == R_PPC_ADDR14_BRNTAKEN);
3841 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3843 (*_bfd_error_handler)
3844 (_("%B: relocation %s cannot be used when making a shared object"),
3846 ppc_elf_howto_table[r_type]->name);
3847 bfd_set_error (bfd_error_bad_value);
3850 /* Look through the relocs for a section during the first phase, and
3851 allocate space in the global offset table or procedure linkage
3855 ppc_elf_check_relocs (bfd *abfd,
3856 struct bfd_link_info *info,
3858 const Elf_Internal_Rela *relocs)
3860 struct ppc_elf_link_hash_table *htab;
3861 Elf_Internal_Shdr *symtab_hdr;
3862 struct elf_link_hash_entry **sym_hashes;
3863 const Elf_Internal_Rela *rel;
3864 const Elf_Internal_Rela *rel_end;
3865 asection *got2, *sreloc;
3866 struct elf_link_hash_entry *tga;
3868 if (info->relocatable)
3871 /* Don't do anything special with non-loaded, non-alloced sections.
3872 In particular, any relocs in such sections should not affect GOT
3873 and PLT reference counting (ie. we don't allow them to create GOT
3874 or PLT entries), there's no possibility or desire to optimize TLS
3875 relocs, and there's not much point in propagating relocs to shared
3876 libs that the dynamic linker won't relocate. */
3877 if ((sec->flags & SEC_ALLOC) == 0)
3881 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3885 BFD_ASSERT (is_ppc_elf (abfd));
3887 /* Initialize howto table if not already done. */
3888 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3889 ppc_elf_howto_init ();
3891 htab = ppc_elf_hash_table (info);
3892 if (htab->glink == NULL)
3894 if (htab->elf.dynobj == NULL)
3895 htab->elf.dynobj = abfd;
3896 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3899 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3900 FALSE, FALSE, TRUE);
3901 symtab_hdr = &elf_symtab_hdr (abfd);
3902 sym_hashes = elf_sym_hashes (abfd);
3903 got2 = bfd_get_section_by_name (abfd, ".got2");
3906 rel_end = relocs + sec->reloc_count;
3907 for (rel = relocs; rel < rel_end; rel++)
3909 unsigned long r_symndx;
3910 enum elf_ppc_reloc_type r_type;
3911 struct elf_link_hash_entry *h;
3914 r_symndx = ELF32_R_SYM (rel->r_info);
3915 if (r_symndx < symtab_hdr->sh_info)
3919 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3920 while (h->root.type == bfd_link_hash_indirect
3921 || h->root.type == bfd_link_hash_warning)
3922 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3924 /* PR15323, ref flags aren't set for references in the same
3926 h->root.non_ir_ref = 1;
3929 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3930 This shows up in particular in an R_PPC_ADDR32 in the eabi
3933 && htab->got == NULL
3934 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3936 if (htab->elf.dynobj == NULL)
3937 htab->elf.dynobj = abfd;
3938 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3940 BFD_ASSERT (h == htab->elf.hgot);
3944 r_type = ELF32_R_TYPE (rel->r_info);
3945 if (h == NULL && !htab->is_vxworks)
3947 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3952 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3954 struct plt_entry **ifunc;
3956 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3957 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3962 /* STT_GNU_IFUNC symbols must have a PLT entry;
3963 In a non-pie executable even when there are
3966 || is_branch_reloc (r_type))
3969 if (r_type == R_PPC_PLTREL24)
3971 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3973 addend = rel->r_addend;
3975 if (!update_plt_info (abfd, ifunc, got2, addend))
3981 if (!htab->is_vxworks
3982 && is_branch_reloc (r_type)
3987 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3988 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3989 /* We have a new-style __tls_get_addr call with a marker
3993 /* Mark this section as having an old-style call. */
3994 sec->has_tls_get_addr_call = 1;
4001 /* These special tls relocs tie a call to __tls_get_addr with
4002 its parameter symbol. */
4005 case R_PPC_GOT_TLSLD16:
4006 case R_PPC_GOT_TLSLD16_LO:
4007 case R_PPC_GOT_TLSLD16_HI:
4008 case R_PPC_GOT_TLSLD16_HA:
4009 tls_type = TLS_TLS | TLS_LD;
4012 case R_PPC_GOT_TLSGD16:
4013 case R_PPC_GOT_TLSGD16_LO:
4014 case R_PPC_GOT_TLSGD16_HI:
4015 case R_PPC_GOT_TLSGD16_HA:
4016 tls_type = TLS_TLS | TLS_GD;
4019 case R_PPC_GOT_TPREL16:
4020 case R_PPC_GOT_TPREL16_LO:
4021 case R_PPC_GOT_TPREL16_HI:
4022 case R_PPC_GOT_TPREL16_HA:
4023 if (!info->executable)
4024 info->flags |= DF_STATIC_TLS;
4025 tls_type = TLS_TLS | TLS_TPREL;
4028 case R_PPC_GOT_DTPREL16:
4029 case R_PPC_GOT_DTPREL16_LO:
4030 case R_PPC_GOT_DTPREL16_HI:
4031 case R_PPC_GOT_DTPREL16_HA:
4032 tls_type = TLS_TLS | TLS_DTPREL;
4034 sec->has_tls_reloc = 1;
4037 /* GOT16 relocations */
4039 case R_PPC_GOT16_LO:
4040 case R_PPC_GOT16_HI:
4041 case R_PPC_GOT16_HA:
4042 /* This symbol requires a global offset table entry. */
4043 if (htab->got == NULL)
4045 if (htab->elf.dynobj == NULL)
4046 htab->elf.dynobj = abfd;
4047 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4052 h->got.refcount += 1;
4053 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4056 /* This is a global offset table entry for a local symbol. */
4057 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4060 /* We may also need a plt entry if the symbol turns out to be
4062 if (h != NULL && !info->shared)
4064 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4069 /* Indirect .sdata relocation. */
4070 case R_PPC_EMB_SDAI16:
4073 bad_shared_reloc (abfd, r_type);
4076 if (htab->sdata[0].section == NULL
4077 && !ppc_elf_create_linker_section (abfd, info, 0,
4080 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
4085 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4086 h->non_got_ref = TRUE;
4090 /* Indirect .sdata2 relocation. */
4091 case R_PPC_EMB_SDA2I16:
4094 bad_shared_reloc (abfd, r_type);
4097 if (htab->sdata[1].section == NULL
4098 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
4101 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
4106 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4107 h->non_got_ref = TRUE;
4111 case R_PPC_VLE_SDAREL_LO16A:
4112 case R_PPC_VLE_SDAREL_LO16D:
4113 case R_PPC_VLE_SDAREL_HI16A:
4114 case R_PPC_VLE_SDAREL_HI16D:
4115 case R_PPC_VLE_SDAREL_HA16A:
4116 case R_PPC_VLE_SDAREL_HA16D:
4117 case R_PPC_SDAREL16:
4118 if (htab->sdata[0].sym == NULL
4119 && !create_sdata_sym (info, &htab->sdata[0]))
4122 if (htab->sdata[1].sym == NULL
4123 && !create_sdata_sym (info, &htab->sdata[1]))
4128 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4129 h->non_got_ref = TRUE;
4133 case R_PPC_VLE_REL8:
4134 case R_PPC_VLE_REL15:
4135 case R_PPC_VLE_REL24:
4136 case R_PPC_VLE_LO16A:
4137 case R_PPC_VLE_LO16D:
4138 case R_PPC_VLE_HI16A:
4139 case R_PPC_VLE_HI16D:
4140 case R_PPC_VLE_HA16A:
4141 case R_PPC_VLE_HA16D:
4144 case R_PPC_EMB_SDA2REL:
4147 bad_shared_reloc (abfd, r_type);
4150 if (htab->sdata[1].sym == NULL
4151 && !create_sdata_sym (info, &htab->sdata[1]))
4155 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4156 h->non_got_ref = TRUE;
4160 case R_PPC_VLE_SDA21_LO:
4161 case R_PPC_VLE_SDA21:
4162 case R_PPC_EMB_SDA21:
4163 case R_PPC_EMB_RELSDA:
4166 bad_shared_reloc (abfd, r_type);
4169 if (htab->sdata[0].sym == NULL
4170 && !create_sdata_sym (info, &htab->sdata[0]))
4172 if (htab->sdata[1].sym == NULL
4173 && !create_sdata_sym (info, &htab->sdata[1]))
4177 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4178 h->non_got_ref = TRUE;
4182 case R_PPC_EMB_NADDR32:
4183 case R_PPC_EMB_NADDR16:
4184 case R_PPC_EMB_NADDR16_LO:
4185 case R_PPC_EMB_NADDR16_HI:
4186 case R_PPC_EMB_NADDR16_HA:
4189 bad_shared_reloc (abfd, r_type);
4193 h->non_got_ref = TRUE;
4196 case R_PPC_PLTREL24:
4201 case R_PPC_PLTREL32:
4202 case R_PPC_PLT16_LO:
4203 case R_PPC_PLT16_HI:
4204 case R_PPC_PLT16_HA:
4206 fprintf (stderr, "Reloc requires a PLT entry\n");
4208 /* This symbol requires a procedure linkage table entry. We
4209 actually build the entry in finish_dynamic_symbol,
4210 because this might be a case of linking PIC code without
4211 linking in any dynamic objects, in which case we don't
4212 need to generate a procedure linkage table after all. */
4216 /* It does not make sense to have a procedure linkage
4217 table entry for a local symbol. */
4218 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
4219 abfd, sec, rel->r_offset,
4220 ppc_elf_howto_table[r_type]->name);
4221 bfd_set_error (bfd_error_bad_value);
4228 if (r_type == R_PPC_PLTREL24)
4230 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4232 addend = rel->r_addend;
4235 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4240 /* The following relocations don't need to propagate the
4241 relocation if linking a shared object since they are
4242 section relative. */
4244 case R_PPC_SECTOFF_LO:
4245 case R_PPC_SECTOFF_HI:
4246 case R_PPC_SECTOFF_HA:
4247 case R_PPC_DTPREL16:
4248 case R_PPC_DTPREL16_LO:
4249 case R_PPC_DTPREL16_HI:
4250 case R_PPC_DTPREL16_HA:
4255 case R_PPC_REL16_LO:
4256 case R_PPC_REL16_HI:
4257 case R_PPC_REL16_HA:
4258 ppc_elf_tdata (abfd)->has_rel16 = 1;
4261 /* These are just markers. */
4263 case R_PPC_EMB_MRKREF:
4267 case R_PPC_RELAX_PLT:
4268 case R_PPC_RELAX_PLTREL24:
4271 /* These should only appear in dynamic objects. */
4273 case R_PPC_GLOB_DAT:
4274 case R_PPC_JMP_SLOT:
4275 case R_PPC_RELATIVE:
4276 case R_PPC_IRELATIVE:
4279 /* These aren't handled yet. We'll report an error later. */
4281 case R_PPC_EMB_RELSEC16:
4282 case R_PPC_EMB_RELST_LO:
4283 case R_PPC_EMB_RELST_HI:
4284 case R_PPC_EMB_RELST_HA:
4285 case R_PPC_EMB_BIT_FLD:
4288 /* This refers only to functions defined in the shared library. */
4289 case R_PPC_LOCAL24PC:
4290 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4292 htab->plt_type = PLT_OLD;
4293 htab->old_bfd = abfd;
4295 if (h != NULL && h->type == STT_GNU_IFUNC)
4299 info->callbacks->einfo (_("%P: %H: @local call to ifunc %s\n"),
4300 abfd, sec, rel->r_offset,
4301 h->root.root.string);
4302 bfd_set_error (bfd_error_bad_value);
4306 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4311 /* This relocation describes the C++ object vtable hierarchy.
4312 Reconstruct it for later use during GC. */
4313 case R_PPC_GNU_VTINHERIT:
4314 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4318 /* This relocation describes which C++ vtable entries are actually
4319 used. Record for later use during GC. */
4320 case R_PPC_GNU_VTENTRY:
4321 BFD_ASSERT (h != NULL);
4323 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4327 /* We shouldn't really be seeing these. */
4330 case R_PPC_TPREL16_LO:
4331 case R_PPC_TPREL16_HI:
4332 case R_PPC_TPREL16_HA:
4333 if (!info->executable)
4334 info->flags |= DF_STATIC_TLS;
4338 case R_PPC_DTPMOD32:
4339 case R_PPC_DTPREL32:
4345 && (sec->flags & SEC_CODE) != 0
4347 && htab->plt_type == PLT_UNSET)
4349 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4350 the start of a function, which assembles to a REL32
4351 reference to .got2. If we detect one of these, then
4352 force the old PLT layout because the linker cannot
4353 reliably deduce the GOT pointer value needed for
4356 Elf_Internal_Sym *isym;
4358 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4363 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4366 htab->plt_type = PLT_OLD;
4367 htab->old_bfd = abfd;
4370 if (h == NULL || h == htab->elf.hgot)
4376 case R_PPC_ADDR16_LO:
4377 case R_PPC_ADDR16_HI:
4378 case R_PPC_ADDR16_HA:
4381 if (h != NULL && !info->shared)
4383 /* We may need a plt entry if the symbol turns out to be
4384 a function defined in a dynamic object. */
4385 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4388 /* We may need a copy reloc too. */
4390 h->pointer_equality_needed = 1;
4396 case R_PPC_REL14_BRTAKEN:
4397 case R_PPC_REL14_BRNTAKEN:
4400 if (h == htab->elf.hgot)
4402 if (htab->plt_type == PLT_UNSET)
4404 htab->plt_type = PLT_OLD;
4405 htab->old_bfd = abfd;
4413 case R_PPC_ADDR14_BRTAKEN:
4414 case R_PPC_ADDR14_BRNTAKEN:
4415 if (h != NULL && !info->shared)
4417 /* We may need a plt entry if the symbol turns out to be
4418 a function defined in a dynamic object. */
4420 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4426 /* If we are creating a shared library, and this is a reloc
4427 against a global symbol, or a non PC relative reloc
4428 against a local symbol, then we need to copy the reloc
4429 into the shared library. However, if we are linking with
4430 -Bsymbolic, we do not need to copy a reloc against a
4431 global symbol which is defined in an object we are
4432 including in the link (i.e., DEF_REGULAR is set). At
4433 this point we have not seen all the input files, so it is
4434 possible that DEF_REGULAR is not set now but will be set
4435 later (it is never cleared). In case of a weak definition,
4436 DEF_REGULAR may be cleared later by a strong definition in
4437 a shared library. We account for that possibility below by
4438 storing information in the dyn_relocs field of the hash
4439 table entry. A similar situation occurs when creating
4440 shared libraries and symbol visibility changes render the
4443 If on the other hand, we are creating an executable, we
4444 may need to keep relocations for symbols satisfied by a
4445 dynamic library if we manage to avoid copy relocs for the
4448 && (must_be_dyn_reloc (info, r_type)
4450 && (!SYMBOLIC_BIND (info, h)
4451 || h->root.type == bfd_link_hash_defweak
4452 || !h->def_regular))))
4453 || (ELIMINATE_COPY_RELOCS
4456 && (h->root.type == bfd_link_hash_defweak
4457 || !h->def_regular)))
4461 "ppc_elf_check_relocs needs to "
4462 "create relocation for %s\n",
4463 (h && h->root.root.string
4464 ? h->root.root.string : "<unknown>"));
4468 if (htab->elf.dynobj == NULL)
4469 htab->elf.dynobj = abfd;
4471 sreloc = _bfd_elf_make_dynamic_reloc_section
4472 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4478 /* If this is a global symbol, we count the number of
4479 relocations we need for this symbol. */
4482 struct elf_dyn_relocs *p;
4483 struct elf_dyn_relocs **rel_head;
4485 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4487 if (p == NULL || p->sec != sec)
4489 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4492 p->next = *rel_head;
4499 if (!must_be_dyn_reloc (info, r_type))
4504 /* Track dynamic relocs needed for local syms too.
4505 We really need local syms available to do this
4507 struct ppc_dyn_relocs *p;
4508 struct ppc_dyn_relocs **rel_head;
4509 bfd_boolean is_ifunc;
4512 Elf_Internal_Sym *isym;
4514 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4519 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4523 vpp = &elf_section_data (s)->local_dynrel;
4524 rel_head = (struct ppc_dyn_relocs **) vpp;
4525 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4527 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4529 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4531 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4534 p->next = *rel_head;
4537 p->ifunc = is_ifunc;
4552 /* Merge object attributes from IBFD into OBFD. Raise an error if
4553 there are conflicting attributes. */
4555 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4557 obj_attribute *in_attr, *in_attrs;
4558 obj_attribute *out_attr, *out_attrs;
4560 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4562 /* This is the first object. Copy the attributes. */
4563 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4565 /* Use the Tag_null value to indicate the attributes have been
4567 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4572 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4573 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4575 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4576 non-conflicting ones. */
4577 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4578 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4579 if (in_attr->i != out_attr->i)
4582 if (out_attr->i == 0)
4583 out_attr->i = in_attr->i;
4584 else if (in_attr->i == 0)
4586 else if (out_attr->i == 1 && in_attr->i == 2)
4588 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4589 else if (out_attr->i == 1 && in_attr->i == 3)
4591 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4593 else if (out_attr->i == 3 && in_attr->i == 1)
4595 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4597 else if (out_attr->i == 3 && in_attr->i == 2)
4599 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4601 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4603 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4604 else if (in_attr->i > 3)
4606 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4610 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4614 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4615 merge non-conflicting ones. */
4616 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4617 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4618 if (in_attr->i != out_attr->i)
4620 const char *in_abi = NULL, *out_abi = NULL;
4624 case 1: in_abi = "generic"; break;
4625 case 2: in_abi = "AltiVec"; break;
4626 case 3: in_abi = "SPE"; break;
4629 switch (out_attr->i)
4631 case 1: out_abi = "generic"; break;
4632 case 2: out_abi = "AltiVec"; break;
4633 case 3: out_abi = "SPE"; break;
4637 if (out_attr->i == 0)
4638 out_attr->i = in_attr->i;
4639 else if (in_attr->i == 0)
4641 /* For now, allow generic to transition to AltiVec or SPE
4642 without a warning. If GCC marked files with their stack
4643 alignment and used don't-care markings for files which are
4644 not affected by the vector ABI, we could warn about this
4646 else if (out_attr->i == 1)
4647 out_attr->i = in_attr->i;
4648 else if (in_attr->i == 1)
4650 else if (in_abi == NULL)
4652 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4654 else if (out_abi == NULL)
4656 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4660 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4661 ibfd, obfd, in_abi, out_abi);
4664 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4665 and merge non-conflicting ones. */
4666 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4667 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4668 if (in_attr->i != out_attr->i)
4671 if (out_attr->i == 0)
4672 out_attr->i = in_attr->i;
4673 else if (in_attr->i == 0)
4675 else if (out_attr->i == 1 && in_attr->i == 2)
4677 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4678 else if (out_attr->i == 2 && in_attr->i == 1)
4680 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4681 else if (in_attr->i > 2)
4683 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4687 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4691 /* Merge Tag_compatibility attributes and any common GNU ones. */
4692 _bfd_elf_merge_object_attributes (ibfd, obfd);
4697 /* Merge backend specific data from an object file to the output
4698 object file when linking. */
4701 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4707 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4710 /* Check if we have the same endianness. */
4711 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4714 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4717 new_flags = elf_elfheader (ibfd)->e_flags;
4718 old_flags = elf_elfheader (obfd)->e_flags;
4719 if (!elf_flags_init (obfd))
4721 /* First call, no flags set. */
4722 elf_flags_init (obfd) = TRUE;
4723 elf_elfheader (obfd)->e_flags = new_flags;
4726 /* Compatible flags are ok. */
4727 else if (new_flags == old_flags)
4730 /* Incompatible flags. */
4733 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4734 to be linked with either. */
4736 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4737 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4740 (*_bfd_error_handler)
4741 (_("%B: compiled with -mrelocatable and linked with "
4742 "modules compiled normally"), ibfd);
4744 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4745 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4748 (*_bfd_error_handler)
4749 (_("%B: compiled normally and linked with "
4750 "modules compiled with -mrelocatable"), ibfd);
4753 /* The output is -mrelocatable-lib iff both the input files are. */
4754 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4755 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4757 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4758 but each input file is either -mrelocatable or -mrelocatable-lib. */
4759 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4760 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4761 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4762 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4764 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4765 any module uses it. */
4766 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4768 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4769 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4771 /* Warn about any other mismatches. */
4772 if (new_flags != old_flags)
4775 (*_bfd_error_handler)
4776 (_("%B: uses different e_flags (0x%lx) fields "
4777 "than previous modules (0x%lx)"),
4778 ibfd, (long) new_flags, (long) old_flags);
4783 bfd_set_error (bfd_error_bad_value);
4792 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *contents,
4793 bfd_vma offset, bfd_vma relocation,
4794 split16_format_type split16_format)
4797 bfd_vma insn, top5, bottom11;
4799 insn = bfd_get_32 (output_bfd, contents + offset);
4800 top5 = relocation >> 11;
4801 top5 = top5 << (split16_format == split16a_type ? 20 : 16);
4802 bottom11 = relocation & 0x7ff;
4805 bfd_put_32 (output_bfd, insn, contents + offset);
4809 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4810 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4812 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4813 struct bfd_link_info *info)
4815 struct ppc_elf_link_hash_table *htab;
4818 htab = ppc_elf_hash_table (info);
4820 if (htab->plt_type == PLT_UNSET)
4822 struct elf_link_hash_entry *h;
4824 if (htab->params->plt_style == PLT_OLD)
4825 htab->plt_type = PLT_OLD;
4826 else if (info->shared
4827 && htab->elf.dynamic_sections_created
4828 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4829 FALSE, FALSE, TRUE)) != NULL
4830 && (h->type == STT_FUNC
4833 && !(SYMBOL_CALLS_LOCAL (info, h)
4834 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4835 && h->root.type == bfd_link_hash_undefweak)))
4837 /* Profiling of shared libs (and pies) is not supported with
4838 secure plt, because ppc32 does profiling before a
4839 function prologue and a secure plt pic call stubs needs
4840 r30 to be set up. */
4841 htab->plt_type = PLT_OLD;
4846 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4848 /* Look through the reloc flags left by ppc_elf_check_relocs.
4849 Use the old style bss plt if a file makes plt calls
4850 without using the new relocs, and if ld isn't given
4851 --secure-plt and we never see REL16 relocs. */
4852 if (plt_type == PLT_UNSET)
4854 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4855 if (is_ppc_elf (ibfd))
4857 if (ppc_elf_tdata (ibfd)->has_rel16)
4859 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4862 htab->old_bfd = ibfd;
4866 htab->plt_type = plt_type;
4869 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4871 if (htab->old_bfd != NULL)
4872 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4875 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4878 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4880 if (htab->plt_type == PLT_NEW)
4882 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4883 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4885 /* The new PLT is a loaded section. */
4886 if (htab->plt != NULL
4887 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4890 /* The new GOT is not executable. */
4891 if (htab->got != NULL
4892 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4897 /* Stop an unused .glink section from affecting .text alignment. */
4898 if (htab->glink != NULL
4899 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4902 return htab->plt_type == PLT_NEW;
4905 /* Return the section that should be marked against GC for a given
4909 ppc_elf_gc_mark_hook (asection *sec,
4910 struct bfd_link_info *info,
4911 Elf_Internal_Rela *rel,
4912 struct elf_link_hash_entry *h,
4913 Elf_Internal_Sym *sym)
4916 switch (ELF32_R_TYPE (rel->r_info))
4918 case R_PPC_GNU_VTINHERIT:
4919 case R_PPC_GNU_VTENTRY:
4923 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4926 /* Update the got, plt and dynamic reloc reference counts for the
4927 section being removed. */
4930 ppc_elf_gc_sweep_hook (bfd *abfd,
4931 struct bfd_link_info *info,
4933 const Elf_Internal_Rela *relocs)
4935 struct ppc_elf_link_hash_table *htab;
4936 Elf_Internal_Shdr *symtab_hdr;
4937 struct elf_link_hash_entry **sym_hashes;
4938 bfd_signed_vma *local_got_refcounts;
4939 const Elf_Internal_Rela *rel, *relend;
4942 if (info->relocatable)
4945 if ((sec->flags & SEC_ALLOC) == 0)
4948 elf_section_data (sec)->local_dynrel = NULL;
4950 htab = ppc_elf_hash_table (info);
4951 symtab_hdr = &elf_symtab_hdr (abfd);
4952 sym_hashes = elf_sym_hashes (abfd);
4953 local_got_refcounts = elf_local_got_refcounts (abfd);
4954 got2 = bfd_get_section_by_name (abfd, ".got2");
4956 relend = relocs + sec->reloc_count;
4957 for (rel = relocs; rel < relend; rel++)
4959 unsigned long r_symndx;
4960 enum elf_ppc_reloc_type r_type;
4961 struct elf_link_hash_entry *h = NULL;
4963 r_symndx = ELF32_R_SYM (rel->r_info);
4964 if (r_symndx >= symtab_hdr->sh_info)
4966 struct elf_dyn_relocs **pp, *p;
4967 struct ppc_elf_link_hash_entry *eh;
4969 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4970 while (h->root.type == bfd_link_hash_indirect
4971 || h->root.type == bfd_link_hash_warning)
4972 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4973 eh = (struct ppc_elf_link_hash_entry *) h;
4975 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4978 /* Everything must go for SEC. */
4984 r_type = ELF32_R_TYPE (rel->r_info);
4985 if (!htab->is_vxworks
4987 && local_got_refcounts != NULL
4989 || is_branch_reloc (r_type)))
4991 struct plt_entry **local_plt = (struct plt_entry **)
4992 (local_got_refcounts + symtab_hdr->sh_info);
4993 char *local_got_tls_masks = (char *)
4994 (local_plt + symtab_hdr->sh_info);
4995 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4997 struct plt_entry **ifunc = local_plt + r_symndx;
4999 struct plt_entry *ent;
5001 if (r_type == R_PPC_PLTREL24 && info->shared)
5002 addend = rel->r_addend;
5003 ent = find_plt_ent (ifunc, got2, addend);
5004 if (ent->plt.refcount > 0)
5005 ent->plt.refcount -= 1;
5012 case R_PPC_GOT_TLSLD16:
5013 case R_PPC_GOT_TLSLD16_LO:
5014 case R_PPC_GOT_TLSLD16_HI:
5015 case R_PPC_GOT_TLSLD16_HA:
5016 case R_PPC_GOT_TLSGD16:
5017 case R_PPC_GOT_TLSGD16_LO:
5018 case R_PPC_GOT_TLSGD16_HI:
5019 case R_PPC_GOT_TLSGD16_HA:
5020 case R_PPC_GOT_TPREL16:
5021 case R_PPC_GOT_TPREL16_LO:
5022 case R_PPC_GOT_TPREL16_HI:
5023 case R_PPC_GOT_TPREL16_HA:
5024 case R_PPC_GOT_DTPREL16:
5025 case R_PPC_GOT_DTPREL16_LO:
5026 case R_PPC_GOT_DTPREL16_HI:
5027 case R_PPC_GOT_DTPREL16_HA:
5029 case R_PPC_GOT16_LO:
5030 case R_PPC_GOT16_HI:
5031 case R_PPC_GOT16_HA:
5034 if (h->got.refcount > 0)
5038 struct plt_entry *ent;
5040 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5041 if (ent != NULL && ent->plt.refcount > 0)
5042 ent->plt.refcount -= 1;
5045 else if (local_got_refcounts != NULL)
5047 if (local_got_refcounts[r_symndx] > 0)
5048 local_got_refcounts[r_symndx]--;
5054 case R_PPC_REL14_BRTAKEN:
5055 case R_PPC_REL14_BRNTAKEN:
5057 if (h == NULL || h == htab->elf.hgot)
5064 case R_PPC_ADDR16_LO:
5065 case R_PPC_ADDR16_HI:
5066 case R_PPC_ADDR16_HA:
5068 case R_PPC_ADDR14_BRTAKEN:
5069 case R_PPC_ADDR14_BRNTAKEN:
5076 case R_PPC_PLTREL24:
5077 case R_PPC_PLTREL32:
5078 case R_PPC_PLT16_LO:
5079 case R_PPC_PLT16_HI:
5080 case R_PPC_PLT16_HA:
5084 struct plt_entry *ent;
5086 if (r_type == R_PPC_PLTREL24 && info->shared)
5087 addend = rel->r_addend;
5088 ent = find_plt_ent (&h->plt.plist, got2, addend);
5089 if (ent != NULL && ent->plt.refcount > 0)
5090 ent->plt.refcount -= 1;
5101 /* Set plt output section type, htab->tls_get_addr, and call the
5102 generic ELF tls_setup function. */
5105 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5107 struct ppc_elf_link_hash_table *htab;
5109 htab = ppc_elf_hash_table (info);
5110 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5111 FALSE, FALSE, TRUE);
5112 if (!htab->params->no_tls_get_addr_opt)
5114 struct elf_link_hash_entry *opt, *tga;
5115 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5116 FALSE, FALSE, TRUE);
5118 && (opt->root.type == bfd_link_hash_defined
5119 || opt->root.type == bfd_link_hash_defweak))
5121 /* If glibc supports an optimized __tls_get_addr call stub,
5122 signalled by the presence of __tls_get_addr_opt, and we'll
5123 be calling __tls_get_addr via a plt call stub, then
5124 make __tls_get_addr point to __tls_get_addr_opt. */
5125 tga = htab->tls_get_addr;
5126 if (htab->elf.dynamic_sections_created
5128 && (tga->type == STT_FUNC
5130 && !(SYMBOL_CALLS_LOCAL (info, tga)
5131 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5132 && tga->root.type == bfd_link_hash_undefweak)))
5134 struct plt_entry *ent;
5135 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5136 if (ent->plt.refcount > 0)
5140 tga->root.type = bfd_link_hash_indirect;
5141 tga->root.u.i.link = &opt->root;
5142 ppc_elf_copy_indirect_symbol (info, opt, tga);
5143 if (opt->dynindx != -1)
5145 /* Use __tls_get_addr_opt in dynamic relocations. */
5147 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5149 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5152 htab->tls_get_addr = opt;
5157 htab->params->no_tls_get_addr_opt = TRUE;
5159 if (htab->plt_type == PLT_NEW
5160 && htab->plt != NULL
5161 && htab->plt->output_section != NULL)
5163 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5164 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5167 return _bfd_elf_tls_setup (obfd, info);
5170 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5174 branch_reloc_hash_match (const bfd *ibfd,
5175 const Elf_Internal_Rela *rel,
5176 const struct elf_link_hash_entry *hash)
5178 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5179 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5180 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5182 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5184 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5185 struct elf_link_hash_entry *h;
5187 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5188 while (h->root.type == bfd_link_hash_indirect
5189 || h->root.type == bfd_link_hash_warning)
5190 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5197 /* Run through all the TLS relocs looking for optimization
5201 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5202 struct bfd_link_info *info)
5206 struct ppc_elf_link_hash_table *htab;
5209 if (info->relocatable || !info->executable)
5212 htab = ppc_elf_hash_table (info);
5216 /* Make two passes through the relocs. First time check that tls
5217 relocs involved in setting up a tls_get_addr call are indeed
5218 followed by such a call. If they are not, don't do any tls
5219 optimization. On the second pass twiddle tls_mask flags to
5220 notify relocate_section that optimization can be done, and
5221 adjust got and plt refcounts. */
5222 for (pass = 0; pass < 2; ++pass)
5223 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5225 Elf_Internal_Sym *locsyms = NULL;
5226 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5227 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5229 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5230 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5232 Elf_Internal_Rela *relstart, *rel, *relend;
5233 int expecting_tls_get_addr = 0;
5235 /* Read the relocations. */
5236 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5238 if (relstart == NULL)
5241 relend = relstart + sec->reloc_count;
5242 for (rel = relstart; rel < relend; rel++)
5244 enum elf_ppc_reloc_type r_type;
5245 unsigned long r_symndx;
5246 struct elf_link_hash_entry *h = NULL;
5248 char tls_set, tls_clear;
5249 bfd_boolean is_local;
5250 bfd_signed_vma *got_count;
5252 r_symndx = ELF32_R_SYM (rel->r_info);
5253 if (r_symndx >= symtab_hdr->sh_info)
5255 struct elf_link_hash_entry **sym_hashes;
5257 sym_hashes = elf_sym_hashes (ibfd);
5258 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5259 while (h->root.type == bfd_link_hash_indirect
5260 || h->root.type == bfd_link_hash_warning)
5261 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5269 r_type = ELF32_R_TYPE (rel->r_info);
5270 /* If this section has old-style __tls_get_addr calls
5271 without marker relocs, then check that each
5272 __tls_get_addr call reloc is preceded by a reloc
5273 that conceivably belongs to the __tls_get_addr arg
5274 setup insn. If we don't find matching arg setup
5275 relocs, don't do any tls optimization. */
5277 && sec->has_tls_get_addr_call
5279 && h == htab->tls_get_addr
5280 && !expecting_tls_get_addr
5281 && is_branch_reloc (r_type))
5283 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5284 "TLS optimization disabled\n",
5285 ibfd, sec, rel->r_offset);
5286 if (elf_section_data (sec)->relocs != relstart)
5291 expecting_tls_get_addr = 0;
5294 case R_PPC_GOT_TLSLD16:
5295 case R_PPC_GOT_TLSLD16_LO:
5296 expecting_tls_get_addr = 1;
5299 case R_PPC_GOT_TLSLD16_HI:
5300 case R_PPC_GOT_TLSLD16_HA:
5301 /* These relocs should never be against a symbol
5302 defined in a shared lib. Leave them alone if
5303 that turns out to be the case. */
5312 case R_PPC_GOT_TLSGD16:
5313 case R_PPC_GOT_TLSGD16_LO:
5314 expecting_tls_get_addr = 1;
5317 case R_PPC_GOT_TLSGD16_HI:
5318 case R_PPC_GOT_TLSGD16_HA:
5324 tls_set = TLS_TLS | TLS_TPRELGD;
5328 case R_PPC_GOT_TPREL16:
5329 case R_PPC_GOT_TPREL16_LO:
5330 case R_PPC_GOT_TPREL16_HI:
5331 case R_PPC_GOT_TPREL16_HA:
5336 tls_clear = TLS_TPREL;
5344 expecting_tls_get_addr = 2;
5355 if (!expecting_tls_get_addr
5356 || (expecting_tls_get_addr == 1
5357 && !sec->has_tls_get_addr_call))
5360 if (rel + 1 < relend
5361 && branch_reloc_hash_match (ibfd, rel + 1,
5362 htab->tls_get_addr))
5365 /* Uh oh, we didn't find the expected call. We
5366 could just mark this symbol to exclude it
5367 from tls optimization but it's safer to skip
5368 the entire optimization. */
5369 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5370 "TLS optimization disabled\n"),
5371 ibfd, sec, rel->r_offset);
5372 if (elf_section_data (sec)->relocs != relstart)
5377 if (expecting_tls_get_addr)
5379 struct plt_entry *ent;
5383 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5384 addend = rel[1].r_addend;
5385 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5387 if (ent != NULL && ent->plt.refcount > 0)
5388 ent->plt.refcount -= 1;
5390 if (expecting_tls_get_addr == 2)
5396 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5397 got_count = &h->got.refcount;
5401 bfd_signed_vma *lgot_refs;
5402 struct plt_entry **local_plt;
5405 if (locsyms == NULL)
5407 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5408 if (locsyms == NULL)
5409 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5410 symtab_hdr->sh_info,
5411 0, NULL, NULL, NULL);
5412 if (locsyms == NULL)
5414 if (elf_section_data (sec)->relocs != relstart)
5419 lgot_refs = elf_local_got_refcounts (ibfd);
5420 if (lgot_refs == NULL)
5422 local_plt = (struct plt_entry **)
5423 (lgot_refs + symtab_hdr->sh_info);
5424 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5425 tls_mask = &lgot_masks[r_symndx];
5426 got_count = &lgot_refs[r_symndx];
5431 /* We managed to get rid of a got entry. */
5436 *tls_mask |= tls_set;
5437 *tls_mask &= ~tls_clear;
5440 if (elf_section_data (sec)->relocs != relstart)
5445 && (symtab_hdr->contents != (unsigned char *) locsyms))
5447 if (!info->keep_memory)
5450 symtab_hdr->contents = (unsigned char *) locsyms;
5456 /* Return true if we have dynamic relocs that apply to read-only sections. */
5459 readonly_dynrelocs (struct elf_link_hash_entry *h)
5461 struct elf_dyn_relocs *p;
5463 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5465 asection *s = p->sec->output_section;
5468 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5469 == (SEC_READONLY | SEC_ALLOC)))
5475 /* Adjust a symbol defined by a dynamic object and referenced by a
5476 regular object. The current definition is in some section of the
5477 dynamic object, but we're not including those sections. We have to
5478 change the definition to something the rest of the link can
5482 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5483 struct elf_link_hash_entry *h)
5485 struct ppc_elf_link_hash_table *htab;
5489 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5490 h->root.root.string);
5493 /* Make sure we know what is going on here. */
5494 htab = ppc_elf_hash_table (info);
5495 BFD_ASSERT (htab->elf.dynobj != NULL
5497 || h->type == STT_GNU_IFUNC
5498 || h->u.weakdef != NULL
5501 && !h->def_regular)));
5503 /* Deal with function syms. */
5504 if (h->type == STT_FUNC
5505 || h->type == STT_GNU_IFUNC
5508 /* Clear procedure linkage table information for any symbol that
5509 won't need a .plt entry. */
5510 struct plt_entry *ent;
5511 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5512 if (ent->plt.refcount > 0)
5515 || (h->type != STT_GNU_IFUNC
5516 && (SYMBOL_CALLS_LOCAL (info, h)
5517 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5518 && h->root.type == bfd_link_hash_undefweak))))
5520 /* A PLT entry is not required/allowed when:
5522 1. We are not using ld.so; because then the PLT entry
5523 can't be set up, so we can't use one. In this case,
5524 ppc_elf_adjust_dynamic_symbol won't even be called.
5526 2. GC has rendered the entry unused.
5528 3. We know for certain that a call to this symbol
5529 will go to this object, or will remain undefined. */
5530 h->plt.plist = NULL;
5535 /* After adjust_dynamic_symbol, non_got_ref set in the
5536 non-shared case means that we have allocated space in
5537 .dynbss for the symbol and thus dyn_relocs for this
5538 symbol should be discarded.
5539 If we get here we know we are making a PLT entry for this
5540 symbol, and in an executable we'd normally resolve
5541 relocations against this symbol to the PLT entry. Allow
5542 dynamic relocs if the reference is weak, and the dynamic
5543 relocs will not cause text relocation. */
5544 if (!h->ref_regular_nonweak
5546 && h->type != STT_GNU_IFUNC
5547 && !htab->is_vxworks
5548 && !ppc_elf_hash_entry (h)->has_sda_refs
5549 && !readonly_dynrelocs (h))
5555 h->plt.plist = NULL;
5557 /* If this is a weak symbol, and there is a real definition, the
5558 processor independent code will have arranged for us to see the
5559 real definition first, and we can just use the same value. */
5560 if (h->u.weakdef != NULL)
5562 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5563 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5564 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5565 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5566 if (ELIMINATE_COPY_RELOCS)
5567 h->non_got_ref = h->u.weakdef->non_got_ref;
5571 /* This is a reference to a symbol defined by a dynamic object which
5572 is not a function. */
5574 /* If we are creating a shared library, we must presume that the
5575 only references to the symbol are via the global offset table.
5576 For such cases we need not do anything here; the relocations will
5577 be handled correctly by relocate_section. */
5581 /* If there are no references to this symbol that do not use the
5582 GOT, we don't need to generate a copy reloc. */
5583 if (!h->non_got_ref)
5586 /* If we didn't find any dynamic relocs in read-only sections, then
5587 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5588 We can't do this if there are any small data relocations. This
5589 doesn't work on VxWorks, where we can not have dynamic
5590 relocations (other than copy and jump slot relocations) in an
5592 if (ELIMINATE_COPY_RELOCS
5593 && !ppc_elf_hash_entry (h)->has_sda_refs
5594 && !htab->is_vxworks
5596 && !readonly_dynrelocs (h))
5602 /* We must allocate the symbol in our .dynbss section, which will
5603 become part of the .bss section of the executable. There will be
5604 an entry for this symbol in the .dynsym section. The dynamic
5605 object will contain position independent code, so all references
5606 from the dynamic object to this symbol will go through the global
5607 offset table. The dynamic linker will use the .dynsym entry to
5608 determine the address it must put in the global offset table, so
5609 both the dynamic object and the regular object will refer to the
5610 same memory location for the variable.
5612 Of course, if the symbol is referenced using SDAREL relocs, we
5613 must instead allocate it in .sbss. */
5615 if (ppc_elf_hash_entry (h)->has_sda_refs)
5619 BFD_ASSERT (s != NULL);
5621 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5622 copy the initial value out of the dynamic object and into the
5623 runtime process image. We need to remember the offset into the
5624 .rela.bss section we are going to use. */
5625 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5629 if (ppc_elf_hash_entry (h)->has_sda_refs)
5630 srel = htab->relsbss;
5632 srel = htab->relbss;
5633 BFD_ASSERT (srel != NULL);
5634 srel->size += sizeof (Elf32_External_Rela);
5638 return _bfd_elf_adjust_dynamic_copy (h, s);
5641 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5642 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5643 specifying the addend on the plt relocation. For -fpic code, the sym
5644 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5645 xxxxxxxx.got2.plt_pic32.<callee>. */
5648 add_stub_sym (struct plt_entry *ent,
5649 struct elf_link_hash_entry *h,
5650 struct bfd_link_info *info)
5652 struct elf_link_hash_entry *sh;
5653 size_t len1, len2, len3;
5656 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5659 stub = ".plt_pic32.";
5661 stub = ".plt_call32.";
5663 len1 = strlen (h->root.root.string);
5664 len2 = strlen (stub);
5667 len3 = strlen (ent->sec->name);
5668 name = bfd_malloc (len1 + len2 + len3 + 9);
5671 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5673 memcpy (name + 8, ent->sec->name, len3);
5674 memcpy (name + 8 + len3, stub, len2);
5675 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5676 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5679 if (sh->root.type == bfd_link_hash_new)
5681 sh->root.type = bfd_link_hash_defined;
5682 sh->root.u.def.section = htab->glink;
5683 sh->root.u.def.value = ent->glink_offset;
5684 sh->ref_regular = 1;
5685 sh->def_regular = 1;
5686 sh->ref_regular_nonweak = 1;
5687 sh->forced_local = 1;
5693 /* Allocate NEED contiguous space in .got, and return the offset.
5694 Handles allocation of the got header when crossing 32k. */
5697 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5700 unsigned int max_before_header;
5702 if (htab->plt_type == PLT_VXWORKS)
5704 where = htab->got->size;
5705 htab->got->size += need;
5709 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5710 if (need <= htab->got_gap)
5712 where = max_before_header - htab->got_gap;
5713 htab->got_gap -= need;
5717 if (htab->got->size + need > max_before_header
5718 && htab->got->size <= max_before_header)
5720 htab->got_gap = max_before_header - htab->got->size;
5721 htab->got->size = max_before_header + htab->got_header_size;
5723 where = htab->got->size;
5724 htab->got->size += need;
5730 /* Allocate space in associated reloc sections for dynamic relocs. */
5733 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5735 struct bfd_link_info *info = inf;
5736 struct ppc_elf_link_hash_entry *eh;
5737 struct ppc_elf_link_hash_table *htab;
5738 struct elf_dyn_relocs *p;
5740 if (h->root.type == bfd_link_hash_indirect)
5743 htab = ppc_elf_hash_table (info);
5744 if (htab->elf.dynamic_sections_created
5745 || h->type == STT_GNU_IFUNC)
5747 struct plt_entry *ent;
5748 bfd_boolean doneone = FALSE;
5749 bfd_vma plt_offset = 0, glink_offset = 0;
5752 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5753 if (ent->plt.refcount > 0)
5755 /* Make sure this symbol is output as a dynamic symbol. */
5756 if (h->dynindx == -1
5759 && htab->elf.dynamic_sections_created)
5761 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5765 dyn = htab->elf.dynamic_sections_created;
5767 || h->type == STT_GNU_IFUNC
5768 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5770 asection *s = htab->plt;
5771 if (!dyn || h->dynindx == -1)
5774 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5778 plt_offset = s->size;
5781 ent->plt.offset = plt_offset;
5784 if (!doneone || info->shared)
5786 glink_offset = s->size;
5787 s->size += GLINK_ENTRY_SIZE;
5788 if (h == htab->tls_get_addr
5789 && !htab->params->no_tls_get_addr_opt)
5790 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5797 h->root.u.def.section = s;
5798 h->root.u.def.value = glink_offset;
5800 ent->glink_offset = glink_offset;
5802 if (htab->params->emit_stub_syms
5803 && !add_stub_sym (ent, h, info))
5810 /* If this is the first .plt entry, make room
5811 for the special first entry. */
5813 s->size += htab->plt_initial_entry_size;
5815 /* The PowerPC PLT is actually composed of two
5816 parts, the first part is 2 words (for a load
5817 and a jump), and then there is a remaining
5818 word available at the end. */
5819 plt_offset = (htab->plt_initial_entry_size
5820 + (htab->plt_slot_size
5822 - htab->plt_initial_entry_size)
5823 / htab->plt_entry_size)));
5825 /* If this symbol is not defined in a regular
5826 file, and we are not generating a shared
5827 library, then set the symbol to this location
5828 in the .plt. This is to avoid text
5829 relocations, and is required to make
5830 function pointers compare as equal between
5831 the normal executable and the shared library. */
5836 h->root.u.def.section = s;
5837 h->root.u.def.value = plt_offset;
5840 /* Make room for this entry. */
5841 s->size += htab->plt_entry_size;
5842 /* After the 8192nd entry, room for two entries
5844 if (htab->plt_type == PLT_OLD
5845 && (s->size - htab->plt_initial_entry_size)
5846 / htab->plt_entry_size
5847 > PLT_NUM_SINGLE_ENTRIES)
5848 s->size += htab->plt_entry_size;
5850 ent->plt.offset = plt_offset;
5853 /* We also need to make an entry in the .rela.plt section. */
5856 if (!htab->elf.dynamic_sections_created
5857 || h->dynindx == -1)
5858 htab->reliplt->size += sizeof (Elf32_External_Rela);
5861 htab->relplt->size += sizeof (Elf32_External_Rela);
5863 if (htab->plt_type == PLT_VXWORKS)
5865 /* Allocate space for the unloaded relocations. */
5867 && htab->elf.dynamic_sections_created)
5870 == (bfd_vma) htab->plt_initial_entry_size)
5872 htab->srelplt2->size
5873 += (sizeof (Elf32_External_Rela)
5874 * VXWORKS_PLTRESOLVE_RELOCS);
5877 htab->srelplt2->size
5878 += (sizeof (Elf32_External_Rela)
5879 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5882 /* Every PLT entry has an associated GOT entry in
5884 htab->sgotplt->size += 4;
5891 ent->plt.offset = (bfd_vma) -1;
5894 ent->plt.offset = (bfd_vma) -1;
5898 h->plt.plist = NULL;
5904 h->plt.plist = NULL;
5908 eh = (struct ppc_elf_link_hash_entry *) h;
5909 if (eh->elf.got.refcount > 0)
5914 /* Make sure this symbol is output as a dynamic symbol. */
5915 if (eh->elf.dynindx == -1
5916 && !eh->elf.forced_local
5917 && eh->elf.type != STT_GNU_IFUNC
5918 && htab->elf.dynamic_sections_created)
5920 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5925 if ((eh->tls_mask & TLS_TLS) != 0)
5927 if ((eh->tls_mask & TLS_LD) != 0)
5929 if (!eh->elf.def_dynamic)
5930 /* We'll just use htab->tlsld_got.offset. This should
5931 always be the case. It's a little odd if we have
5932 a local dynamic reloc against a non-local symbol. */
5933 htab->tlsld_got.refcount += 1;
5937 if ((eh->tls_mask & TLS_GD) != 0)
5939 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5941 if ((eh->tls_mask & TLS_DTPREL) != 0)
5947 eh->elf.got.offset = (bfd_vma) -1;
5950 eh->elf.got.offset = allocate_got (htab, need);
5951 dyn = htab->elf.dynamic_sections_created;
5953 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5954 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5955 || eh->elf.root.type != bfd_link_hash_undefweak))
5957 asection *rsec = htab->relgot;
5959 if (eh->elf.type == STT_GNU_IFUNC)
5960 rsec = htab->reliplt;
5961 /* All the entries we allocated need relocs.
5962 Except LD only needs one. */
5963 if ((eh->tls_mask & TLS_LD) != 0
5964 && eh->elf.def_dynamic)
5966 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5971 eh->elf.got.offset = (bfd_vma) -1;
5973 if (eh->dyn_relocs == NULL
5974 || !htab->elf.dynamic_sections_created)
5977 /* In the shared -Bsymbolic case, discard space allocated for
5978 dynamic pc-relative relocs against symbols which turn out to be
5979 defined in regular objects. For the normal shared case, discard
5980 space for relocs that have become local due to symbol visibility
5985 /* Relocs that use pc_count are those that appear on a call insn,
5986 or certain REL relocs (see must_be_dyn_reloc) that can be
5987 generated via assembly. We want calls to protected symbols to
5988 resolve directly to the function rather than going via the plt.
5989 If people want function pointer comparisons to work as expected
5990 then they should avoid writing weird assembly. */
5991 if (SYMBOL_CALLS_LOCAL (info, h))
5993 struct elf_dyn_relocs **pp;
5995 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5997 p->count -= p->pc_count;
6006 if (htab->is_vxworks)
6008 struct elf_dyn_relocs **pp;
6010 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6012 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6019 /* Discard relocs on undefined symbols that must be local. */
6020 if (eh->dyn_relocs != NULL
6021 && h->root.type == bfd_link_hash_undefined
6022 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6023 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6024 eh->dyn_relocs = NULL;
6026 /* Also discard relocs on undefined weak syms with non-default
6028 if (eh->dyn_relocs != NULL
6029 && h->root.type == bfd_link_hash_undefweak)
6031 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6032 eh->dyn_relocs = NULL;
6034 /* Make sure undefined weak symbols are output as a dynamic
6036 else if (h->dynindx == -1
6040 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6045 else if (ELIMINATE_COPY_RELOCS)
6047 /* For the non-shared case, discard space for relocs against
6048 symbols which turn out to need copy relocs or are not
6054 /* Make sure this symbol is output as a dynamic symbol.
6055 Undefined weak syms won't yet be marked as dynamic. */
6056 if (h->dynindx == -1
6057 && !h->forced_local)
6059 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6063 /* If that succeeded, we know we'll be keeping all the
6065 if (h->dynindx != -1)
6069 eh->dyn_relocs = NULL;
6074 /* Finally, allocate space. */
6075 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6077 asection *sreloc = elf_section_data (p->sec)->sreloc;
6078 if (eh->elf.type == STT_GNU_IFUNC)
6079 sreloc = htab->reliplt;
6080 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6086 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6087 read-only sections. */
6090 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6092 if (h->root.type == bfd_link_hash_indirect)
6095 if (readonly_dynrelocs (h))
6097 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6099 /* Not an error, just cut short the traversal. */
6105 static const unsigned char glink_eh_frame_cie[] =
6107 0, 0, 0, 16, /* length. */
6108 0, 0, 0, 0, /* id. */
6109 1, /* CIE version. */
6110 'z', 'R', 0, /* Augmentation string. */
6111 4, /* Code alignment. */
6112 0x7c, /* Data alignment. */
6114 1, /* Augmentation size. */
6115 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6116 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6119 /* Set the sizes of the dynamic sections. */
6122 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
6123 struct bfd_link_info *info)
6125 struct ppc_elf_link_hash_table *htab;
6131 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6134 htab = ppc_elf_hash_table (info);
6135 BFD_ASSERT (htab->elf.dynobj != NULL);
6137 if (elf_hash_table (info)->dynamic_sections_created)
6139 /* Set the contents of the .interp section to the interpreter. */
6140 if (info->executable)
6142 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6143 BFD_ASSERT (s != NULL);
6144 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6145 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6149 if (htab->plt_type == PLT_OLD)
6150 htab->got_header_size = 16;
6151 else if (htab->plt_type == PLT_NEW)
6152 htab->got_header_size = 12;
6154 /* Set up .got offsets for local syms, and space for local dynamic
6156 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6158 bfd_signed_vma *local_got;
6159 bfd_signed_vma *end_local_got;
6160 struct plt_entry **local_plt;
6161 struct plt_entry **end_local_plt;
6163 bfd_size_type locsymcount;
6164 Elf_Internal_Shdr *symtab_hdr;
6166 if (!is_ppc_elf (ibfd))
6169 for (s = ibfd->sections; s != NULL; s = s->next)
6171 struct ppc_dyn_relocs *p;
6173 for (p = ((struct ppc_dyn_relocs *)
6174 elf_section_data (s)->local_dynrel);
6178 if (!bfd_is_abs_section (p->sec)
6179 && bfd_is_abs_section (p->sec->output_section))
6181 /* Input section has been discarded, either because
6182 it is a copy of a linkonce section or due to
6183 linker script /DISCARD/, so we'll be discarding
6186 else if (htab->is_vxworks
6187 && strcmp (p->sec->output_section->name,
6190 /* Relocations in vxworks .tls_vars sections are
6191 handled specially by the loader. */
6193 else if (p->count != 0)
6195 asection *sreloc = elf_section_data (p->sec)->sreloc;
6197 sreloc = htab->reliplt;
6198 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6199 if ((p->sec->output_section->flags
6200 & (SEC_READONLY | SEC_ALLOC))
6201 == (SEC_READONLY | SEC_ALLOC))
6202 info->flags |= DF_TEXTREL;
6207 local_got = elf_local_got_refcounts (ibfd);
6211 symtab_hdr = &elf_symtab_hdr (ibfd);
6212 locsymcount = symtab_hdr->sh_info;
6213 end_local_got = local_got + locsymcount;
6214 local_plt = (struct plt_entry **) end_local_got;
6215 end_local_plt = local_plt + locsymcount;
6216 lgot_masks = (char *) end_local_plt;
6218 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6221 unsigned int need = 0;
6222 if ((*lgot_masks & TLS_TLS) != 0)
6224 if ((*lgot_masks & TLS_GD) != 0)
6226 if ((*lgot_masks & TLS_LD) != 0)
6227 htab->tlsld_got.refcount += 1;
6228 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6230 if ((*lgot_masks & TLS_DTPREL) != 0)
6236 *local_got = (bfd_vma) -1;
6239 *local_got = allocate_got (htab, need);
6242 asection *srel = htab->relgot;
6243 if ((*lgot_masks & PLT_IFUNC) != 0)
6244 srel = htab->reliplt;
6245 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6250 *local_got = (bfd_vma) -1;
6252 if (htab->is_vxworks)
6255 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6256 for (; local_plt < end_local_plt; ++local_plt)
6258 struct plt_entry *ent;
6259 bfd_boolean doneone = FALSE;
6260 bfd_vma plt_offset = 0, glink_offset = 0;
6262 for (ent = *local_plt; ent != NULL; ent = ent->next)
6263 if (ent->plt.refcount > 0)
6269 plt_offset = s->size;
6272 ent->plt.offset = plt_offset;
6275 if (!doneone || info->shared)
6277 glink_offset = s->size;
6278 s->size += GLINK_ENTRY_SIZE;
6280 ent->glink_offset = glink_offset;
6284 htab->reliplt->size += sizeof (Elf32_External_Rela);
6289 ent->plt.offset = (bfd_vma) -1;
6293 /* Allocate space for global sym dynamic relocs. */
6294 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6296 if (htab->tlsld_got.refcount > 0)
6298 htab->tlsld_got.offset = allocate_got (htab, 8);
6300 htab->relgot->size += sizeof (Elf32_External_Rela);
6303 htab->tlsld_got.offset = (bfd_vma) -1;
6305 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6307 unsigned int g_o_t = 32768;
6309 /* If we haven't allocated the header, do so now. When we get here,
6310 for old plt/got the got size will be 0 to 32764 (not allocated),
6311 or 32780 to 65536 (header allocated). For new plt/got, the
6312 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6313 if (htab->got->size <= 32768)
6315 g_o_t = htab->got->size;
6316 if (htab->plt_type == PLT_OLD)
6318 htab->got->size += htab->got_header_size;
6321 htab->elf.hgot->root.u.def.value = g_o_t;
6325 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6327 && !(sda->root.type == bfd_link_hash_defined
6328 || sda->root.type == bfd_link_hash_defweak))
6330 sda->root.type = bfd_link_hash_defined;
6331 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6332 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6336 if (htab->glink != NULL
6337 && htab->glink->size != 0
6338 && htab->elf.dynamic_sections_created)
6340 htab->glink_pltresolve = htab->glink->size;
6341 /* Space for the branch table. */
6342 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6343 /* Pad out to align the start of PLTresolve. */
6344 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6346 htab->glink->size += GLINK_PLTRESOLVE;
6348 if (htab->params->emit_stub_syms)
6350 struct elf_link_hash_entry *sh;
6351 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6352 TRUE, FALSE, FALSE);
6355 if (sh->root.type == bfd_link_hash_new)
6357 sh->root.type = bfd_link_hash_defined;
6358 sh->root.u.def.section = htab->glink;
6359 sh->root.u.def.value = htab->glink_pltresolve;
6360 sh->ref_regular = 1;
6361 sh->def_regular = 1;
6362 sh->ref_regular_nonweak = 1;
6363 sh->forced_local = 1;
6366 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6367 TRUE, FALSE, FALSE);
6370 if (sh->root.type == bfd_link_hash_new)
6372 sh->root.type = bfd_link_hash_defined;
6373 sh->root.u.def.section = htab->glink;
6374 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6375 sh->ref_regular = 1;
6376 sh->def_regular = 1;
6377 sh->ref_regular_nonweak = 1;
6378 sh->forced_local = 1;
6384 if (htab->glink != NULL
6385 && htab->glink->size != 0
6386 && htab->glink_eh_frame != NULL
6387 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6388 && _bfd_elf_eh_frame_present (info))
6390 s = htab->glink_eh_frame;
6391 s->size = sizeof (glink_eh_frame_cie) + 20;
6395 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6400 /* We've now determined the sizes of the various dynamic sections.
6401 Allocate memory for them. */
6403 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6405 bfd_boolean strip_section = TRUE;
6407 if ((s->flags & SEC_LINKER_CREATED) == 0)
6413 /* We'd like to strip these sections if they aren't needed, but if
6414 we've exported dynamic symbols from them we must leave them.
6415 It's too late to tell BFD to get rid of the symbols. */
6416 if (htab->elf.hplt != NULL)
6417 strip_section = FALSE;
6418 /* Strip this section if we don't need it; see the
6421 else if (s == htab->iplt
6423 || s == htab->glink_eh_frame
6424 || s == htab->sgotplt
6426 || s == htab->dynbss
6427 || s == htab->dynsbss
6428 || s == htab->sdata[0].section
6429 || s == htab->sdata[1].section)
6431 /* Strip these too. */
6433 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6438 /* Remember whether there are any relocation sections. */
6441 /* We use the reloc_count field as a counter if we need
6442 to copy relocs into the output file. */
6448 /* It's not one of our sections, so don't allocate space. */
6452 if (s->size == 0 && strip_section)
6454 /* If we don't need this section, strip it from the
6455 output file. This is mostly to handle .rela.bss and
6456 .rela.plt. We must create both sections in
6457 create_dynamic_sections, because they must be created
6458 before the linker maps input sections to output
6459 sections. The linker does that before
6460 adjust_dynamic_symbol is called, and it is that
6461 function which decides whether anything needs to go
6462 into these sections. */
6463 s->flags |= SEC_EXCLUDE;
6467 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6470 /* Allocate memory for the section contents. */
6471 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6472 if (s->contents == NULL)
6476 if (htab->elf.dynamic_sections_created)
6478 /* Add some entries to the .dynamic section. We fill in the
6479 values later, in ppc_elf_finish_dynamic_sections, but we
6480 must add the entries now so that we get the correct size for
6481 the .dynamic section. The DT_DEBUG entry is filled in by the
6482 dynamic linker and used by the debugger. */
6483 #define add_dynamic_entry(TAG, VAL) \
6484 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6486 if (info->executable)
6488 if (!add_dynamic_entry (DT_DEBUG, 0))
6492 if (htab->plt != NULL && htab->plt->size != 0)
6494 if (!add_dynamic_entry (DT_PLTGOT, 0)
6495 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6496 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6497 || !add_dynamic_entry (DT_JMPREL, 0))
6501 if (htab->plt_type == PLT_NEW
6502 && htab->glink != NULL
6503 && htab->glink->size != 0)
6505 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6507 if (!htab->params->no_tls_get_addr_opt
6508 && htab->tls_get_addr != NULL
6509 && htab->tls_get_addr->plt.plist != NULL
6510 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6516 if (!add_dynamic_entry (DT_RELA, 0)
6517 || !add_dynamic_entry (DT_RELASZ, 0)
6518 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6522 /* If any dynamic relocs apply to a read-only section, then we
6523 need a DT_TEXTREL entry. */
6524 if ((info->flags & DF_TEXTREL) == 0)
6525 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6528 if ((info->flags & DF_TEXTREL) != 0)
6530 if (!add_dynamic_entry (DT_TEXTREL, 0))
6533 if (htab->is_vxworks
6534 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6537 #undef add_dynamic_entry
6539 if (htab->glink_eh_frame != NULL
6540 && htab->glink_eh_frame->contents != NULL)
6542 unsigned char *p = htab->glink_eh_frame->contents;
6545 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6546 /* CIE length (rewrite in case little-endian). */
6547 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6548 p += sizeof (glink_eh_frame_cie);
6550 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6551 bfd_put_32 (htab->elf.dynobj, val, p);
6554 val = p - htab->glink_eh_frame->contents;
6555 bfd_put_32 (htab->elf.dynobj, val, p);
6557 /* Offset to .glink. Set later. */
6560 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6566 && htab->elf.dynamic_sections_created)
6568 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6570 *p++ = DW_CFA_advance_loc + adv;
6573 *p++ = DW_CFA_advance_loc1;
6576 else if (adv < 65536)
6578 *p++ = DW_CFA_advance_loc2;
6579 bfd_put_16 (htab->elf.dynobj, adv, p);
6584 *p++ = DW_CFA_advance_loc4;
6585 bfd_put_32 (htab->elf.dynobj, adv, p);
6588 *p++ = DW_CFA_register;
6591 *p++ = DW_CFA_advance_loc + 4;
6592 *p++ = DW_CFA_restore_extended;
6595 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6596 == htab->glink_eh_frame->size);
6602 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6605 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6607 if (h->plt.plist != NULL
6609 && (!h->pointer_equality_needed
6610 || !h->ref_regular_nonweak))
6613 return _bfd_elf_hash_symbol (h);
6616 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6618 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6619 used for some functions that are allowed to break the ABI). */
6620 static const int shared_stub_entry[] =
6622 0x7c0802a6, /* mflr 0 */
6623 0x429f0005, /* bcl 20, 31, .Lxxx */
6624 0x7d8802a6, /* mflr 12 */
6625 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6626 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6627 0x7c0803a6, /* mtlr 0 */
6628 0x7d8903a6, /* mtctr 12 */
6629 0x4e800420, /* bctr */
6632 static const int stub_entry[] =
6634 0x3d800000, /* lis 12,xxx@ha */
6635 0x398c0000, /* addi 12,12,xxx@l */
6636 0x7d8903a6, /* mtctr 12 */
6637 0x4e800420, /* bctr */
6640 struct ppc_elf_relax_info
6642 unsigned int workaround_size;
6645 /* This function implements long branch trampolines, and the ppc476
6646 icache bug workaround. Any section needing trampolines or patch
6647 space for the workaround has its size extended so that we can
6648 add trampolines at the end of the section. */
6651 ppc_elf_relax_section (bfd *abfd,
6653 struct bfd_link_info *link_info,
6658 struct one_fixup *next;
6660 /* Final link, can use the symbol offset. For a
6661 relocatable link we use the symbol's index. */
6666 Elf_Internal_Shdr *symtab_hdr;
6667 bfd_byte *contents = NULL;
6668 Elf_Internal_Sym *isymbuf = NULL;
6669 Elf_Internal_Rela *internal_relocs = NULL;
6670 Elf_Internal_Rela *irel, *irelend = NULL;
6671 struct one_fixup *fixups = NULL;
6672 struct ppc_elf_relax_info *relax_info = NULL;
6673 unsigned changes = 0;
6674 bfd_boolean workaround_change;
6675 struct ppc_elf_link_hash_table *htab;
6676 bfd_size_type trampbase, trampoff, newsize;
6678 bfd_boolean maybe_pasted;
6682 /* No need to do anything with non-alloc or non-code sections. */
6683 if ((isec->flags & SEC_ALLOC) == 0
6684 || (isec->flags & SEC_CODE) == 0
6685 || (isec->flags & SEC_LINKER_CREATED) != 0
6689 /* We cannot represent the required PIC relocs in the output, so don't
6690 do anything. The linker doesn't support mixing -shared and -r
6692 if (link_info->relocatable && link_info->shared)
6695 htab = ppc_elf_hash_table (link_info);
6699 isec->size = (isec->size + 3) & -4;
6700 if (isec->rawsize == 0)
6701 isec->rawsize = isec->size;
6702 trampbase = isec->size;
6704 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6705 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6706 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6708 if (htab->params->ppc476_workaround)
6710 if (elf_section_data (isec)->sec_info == NULL)
6712 elf_section_data (isec)->sec_info
6713 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6714 if (elf_section_data (isec)->sec_info == NULL)
6717 relax_info = elf_section_data (isec)->sec_info;
6718 trampbase -= relax_info->workaround_size;
6721 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6722 || strcmp (isec->output_section->name, ".fini") == 0);
6723 /* Space for a branch around any trampolines. */
6724 trampoff = trampbase;
6725 if (maybe_pasted && trampbase == isec->rawsize)
6728 symtab_hdr = &elf_symtab_hdr (abfd);
6730 if (htab->params->branch_trampolines)
6732 /* Get a copy of the native relocations. */
6733 if (isec->reloc_count != 0)
6735 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6736 link_info->keep_memory);
6737 if (internal_relocs == NULL)
6741 got2 = bfd_get_section_by_name (abfd, ".got2");
6743 irelend = internal_relocs + isec->reloc_count;
6744 for (irel = internal_relocs; irel < irelend; irel++)
6746 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6749 struct one_fixup *f;
6750 size_t insn_offset = 0;
6751 bfd_vma max_branch_offset, val;
6754 struct elf_link_hash_entry *h;
6755 struct plt_entry **plist;
6756 unsigned char sym_type;
6761 case R_PPC_LOCAL24PC:
6762 case R_PPC_PLTREL24:
6763 max_branch_offset = 1 << 25;
6767 case R_PPC_REL14_BRTAKEN:
6768 case R_PPC_REL14_BRNTAKEN:
6769 max_branch_offset = 1 << 15;
6776 /* Get the value of the symbol referred to by the reloc. */
6778 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6780 /* A local symbol. */
6781 Elf_Internal_Sym *isym;
6783 /* Read this BFD's local symbols. */
6784 if (isymbuf == NULL)
6786 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6787 if (isymbuf == NULL)
6788 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6789 symtab_hdr->sh_info, 0,
6794 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6795 if (isym->st_shndx == SHN_UNDEF)
6796 tsec = bfd_und_section_ptr;
6797 else if (isym->st_shndx == SHN_ABS)
6798 tsec = bfd_abs_section_ptr;
6799 else if (isym->st_shndx == SHN_COMMON)
6800 tsec = bfd_com_section_ptr;
6802 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6804 toff = isym->st_value;
6805 sym_type = ELF_ST_TYPE (isym->st_info);
6809 /* Global symbol handling. */
6812 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6813 h = elf_sym_hashes (abfd)[indx];
6815 while (h->root.type == bfd_link_hash_indirect
6816 || h->root.type == bfd_link_hash_warning)
6817 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6819 if (h->root.type == bfd_link_hash_defined
6820 || h->root.type == bfd_link_hash_defweak)
6822 tsec = h->root.u.def.section;
6823 toff = h->root.u.def.value;
6825 else if (h->root.type == bfd_link_hash_undefined
6826 || h->root.type == bfd_link_hash_undefweak)
6828 tsec = bfd_und_section_ptr;
6829 toff = link_info->relocatable ? indx : 0;
6834 /* If this branch is to __tls_get_addr then we may later
6835 optimise away the call. We won't be needing a long-
6836 branch stub in that case. */
6837 if (link_info->executable
6838 && !link_info->relocatable
6839 && h == htab->tls_get_addr
6840 && irel != internal_relocs)
6842 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6843 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6844 unsigned int tls_mask = 0;
6846 /* The previous reloc should be one of R_PPC_TLSGD or
6847 R_PPC_TLSLD, or for older object files, a reloc
6848 on the __tls_get_addr arg setup insn. Get tls
6849 mask bits from the symbol on that reloc. */
6850 if (t_symndx < symtab_hdr->sh_info)
6852 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6854 if (local_got_offsets != NULL)
6856 struct plt_entry **local_plt = (struct plt_entry **)
6857 (local_got_offsets + symtab_hdr->sh_info);
6858 char *lgot_masks = (char *)
6859 (local_plt + symtab_hdr->sh_info);
6860 tls_mask = lgot_masks[t_symndx];
6865 struct elf_link_hash_entry *th
6866 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6868 while (th->root.type == bfd_link_hash_indirect
6869 || th->root.type == bfd_link_hash_warning)
6870 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6873 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6876 /* The mask bits tell us if the call will be
6878 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6879 && (t_rtype == R_PPC_TLSGD
6880 || t_rtype == R_PPC_GOT_TLSGD16
6881 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6883 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6884 && (t_rtype == R_PPC_TLSLD
6885 || t_rtype == R_PPC_GOT_TLSLD16
6886 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6893 /* The condition here under which we call find_plt_ent must
6894 match that in relocate_section. If we call find_plt_ent here
6895 but not in relocate_section, or vice versa, then the branch
6896 destination used here may be incorrect. */
6900 /* We know is_branch_reloc (r_type) is true. */
6901 if (h->type == STT_GNU_IFUNC
6902 || r_type == R_PPC_PLTREL24)
6903 plist = &h->plt.plist;
6905 else if (sym_type == STT_GNU_IFUNC
6906 && elf_local_got_offsets (abfd) != NULL)
6908 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6909 struct plt_entry **local_plt = (struct plt_entry **)
6910 (local_got_offsets + symtab_hdr->sh_info);
6911 plist = local_plt + ELF32_R_SYM (irel->r_info);
6916 struct plt_entry *ent;
6918 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6919 addend = irel->r_addend;
6920 ent = find_plt_ent (plist, got2, addend);
6923 if (htab->plt_type == PLT_NEW
6925 || !htab->elf.dynamic_sections_created
6926 || h->dynindx == -1)
6929 toff = ent->glink_offset;
6934 toff = ent->plt.offset;
6939 /* If the branch and target are in the same section, you have
6940 no hope of adding stubs. We'll error out later should the
6945 /* There probably isn't any reason to handle symbols in
6946 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6947 attribute for a code section, and we are only looking at
6948 branches. However, implement it correctly here as a
6949 reference for other target relax_section functions. */
6950 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
6952 /* At this stage in linking, no SEC_MERGE symbol has been
6953 adjusted, so all references to such symbols need to be
6954 passed through _bfd_merged_section_offset. (Later, in
6955 relocate_section, all SEC_MERGE symbols *except* for
6956 section symbols have been adjusted.)
6958 gas may reduce relocations against symbols in SEC_MERGE
6959 sections to a relocation against the section symbol when
6960 the original addend was zero. When the reloc is against
6961 a section symbol we should include the addend in the
6962 offset passed to _bfd_merged_section_offset, since the
6963 location of interest is the original symbol. On the
6964 other hand, an access to "sym+addend" where "sym" is not
6965 a section symbol should not include the addend; Such an
6966 access is presumed to be an offset from "sym"; The
6967 location of interest is just "sym". */
6968 if (sym_type == STT_SECTION)
6969 toff += irel->r_addend;
6972 = _bfd_merged_section_offset (abfd, &tsec,
6973 elf_section_data (tsec)->sec_info,
6976 if (sym_type != STT_SECTION)
6977 toff += irel->r_addend;
6979 /* PLTREL24 addends are special. */
6980 else if (r_type != R_PPC_PLTREL24)
6981 toff += irel->r_addend;
6983 /* Attempted -shared link of non-pic code loses. */
6984 if ((!link_info->relocatable
6985 && tsec == bfd_und_section_ptr)
6986 || tsec->output_section == NULL
6987 || (tsec->owner != NULL
6988 && (tsec->owner->flags & BFD_PLUGIN) != 0))
6991 roff = irel->r_offset;
6993 /* If the branch is in range, no need to do anything. */
6994 if (tsec != bfd_und_section_ptr
6995 && (!link_info->relocatable
6996 /* A relocatable link may have sections moved during
6997 final link, so do not presume they remain in range. */
6998 || tsec->output_section == isec->output_section))
7000 bfd_vma symaddr, reladdr;
7002 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7003 reladdr = isec->output_section->vma + isec->output_offset + roff;
7004 if (symaddr - reladdr + max_branch_offset
7005 < 2 * max_branch_offset)
7009 /* Look for an existing fixup to this address. */
7010 for (f = fixups; f ; f = f->next)
7011 if (f->tsec == tsec && f->toff == toff)
7017 unsigned long stub_rtype;
7019 val = trampoff - roff;
7020 if (val >= max_branch_offset)
7021 /* Oh dear, we can't reach a trampoline. Don't try to add
7022 one. We'll report an error later. */
7025 if (link_info->shared)
7027 size = 4 * ARRAY_SIZE (shared_stub_entry);
7032 size = 4 * ARRAY_SIZE (stub_entry);
7035 stub_rtype = R_PPC_RELAX;
7036 if (tsec == htab->plt
7037 || tsec == htab->glink)
7039 stub_rtype = R_PPC_RELAX_PLT;
7040 if (r_type == R_PPC_PLTREL24)
7041 stub_rtype = R_PPC_RELAX_PLTREL24;
7044 /* Hijack the old relocation. Since we need two
7045 relocations for this use a "composite" reloc. */
7046 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7048 irel->r_offset = trampoff + insn_offset;
7049 if (r_type == R_PPC_PLTREL24
7050 && stub_rtype != R_PPC_RELAX_PLTREL24)
7053 /* Record the fixup so we don't do it again this section. */
7054 f = bfd_malloc (sizeof (*f));
7058 f->trampoff = trampoff;
7066 val = f->trampoff - roff;
7067 if (val >= max_branch_offset)
7070 /* Nop out the reloc, since we're finalizing things here. */
7071 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7074 /* Get the section contents. */
7075 if (contents == NULL)
7077 /* Get cached copy if it exists. */
7078 if (elf_section_data (isec)->this_hdr.contents != NULL)
7079 contents = elf_section_data (isec)->this_hdr.contents;
7080 /* Go get them off disk. */
7081 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7085 /* Fix up the existing branch to hit the trampoline. */
7086 hit_addr = contents + roff;
7090 case R_PPC_LOCAL24PC:
7091 case R_PPC_PLTREL24:
7092 t0 = bfd_get_32 (abfd, hit_addr);
7094 t0 |= val & 0x3fffffc;
7095 bfd_put_32 (abfd, t0, hit_addr);
7099 case R_PPC_REL14_BRTAKEN:
7100 case R_PPC_REL14_BRNTAKEN:
7101 t0 = bfd_get_32 (abfd, hit_addr);
7104 bfd_put_32 (abfd, t0, hit_addr);
7109 while (fixups != NULL)
7111 struct one_fixup *f = fixups;
7112 fixups = fixups->next;
7117 workaround_change = FALSE;
7119 if (htab->params->ppc476_workaround
7120 && (!link_info->relocatable
7121 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7123 bfd_vma addr, end_addr;
7124 unsigned int crossings;
7125 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7127 addr = isec->output_section->vma + isec->output_offset;
7128 end_addr = addr + trampoff - 1;
7130 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7133 /* Keep space aligned, to ensure the patch code itself does
7134 not cross a page. Don't decrease size calculated on a
7135 previous pass as otherwise we might never settle on a layout. */
7136 newsize = 15 - (end_addr & 15);
7137 newsize += crossings * 16;
7138 if (relax_info->workaround_size < newsize)
7140 relax_info->workaround_size = newsize;
7141 workaround_change = TRUE;
7143 /* Ensure relocate_section is called. */
7144 isec->flags |= SEC_RELOC;
7146 newsize = trampoff + relax_info->workaround_size;
7149 if (changes || workaround_change)
7150 isec->size = newsize;
7153 && symtab_hdr->contents != (unsigned char *) isymbuf)
7155 if (! link_info->keep_memory)
7159 /* Cache the symbols for elf_link_input_bfd. */
7160 symtab_hdr->contents = (unsigned char *) isymbuf;
7164 if (contents != NULL
7165 && elf_section_data (isec)->this_hdr.contents != contents)
7167 if (!changes && !link_info->keep_memory)
7171 /* Cache the section contents for elf_link_input_bfd. */
7172 elf_section_data (isec)->this_hdr.contents = contents;
7178 /* Append sufficient NOP relocs so we can write out relocation
7179 information for the trampolines. */
7180 Elf_Internal_Shdr *rel_hdr;
7181 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7182 * sizeof (*new_relocs));
7187 memcpy (new_relocs, internal_relocs,
7188 isec->reloc_count * sizeof (*new_relocs));
7189 for (ix = changes; ix--;)
7191 irel = new_relocs + ix + isec->reloc_count;
7193 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7195 if (internal_relocs != elf_section_data (isec)->relocs)
7196 free (internal_relocs);
7197 elf_section_data (isec)->relocs = new_relocs;
7198 isec->reloc_count += changes;
7199 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7200 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7202 else if (internal_relocs != NULL
7203 && elf_section_data (isec)->relocs != internal_relocs)
7204 free (internal_relocs);
7206 *again = changes != 0 || workaround_change;
7210 while (fixups != NULL)
7212 struct one_fixup *f = fixups;
7213 fixups = fixups->next;
7216 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7218 if (contents != NULL
7219 && elf_section_data (isec)->this_hdr.contents != contents)
7221 if (internal_relocs != NULL
7222 && elf_section_data (isec)->relocs != internal_relocs)
7223 free (internal_relocs);
7227 /* What to do when ld finds relocations against symbols defined in
7228 discarded sections. */
7231 ppc_elf_action_discarded (asection *sec)
7233 if (strcmp (".fixup", sec->name) == 0)
7236 if (strcmp (".got2", sec->name) == 0)
7239 return _bfd_elf_default_action_discarded (sec);
7242 /* Fill in the address for a pointer generated in a linker section. */
7245 elf_finish_pointer_linker_section (bfd *input_bfd,
7246 elf_linker_section_t *lsect,
7247 struct elf_link_hash_entry *h,
7249 const Elf_Internal_Rela *rel)
7251 elf_linker_section_pointers_t *linker_section_ptr;
7253 BFD_ASSERT (lsect != NULL);
7257 /* Handle global symbol. */
7258 struct ppc_elf_link_hash_entry *eh;
7260 eh = (struct ppc_elf_link_hash_entry *) h;
7261 BFD_ASSERT (eh->elf.def_regular);
7262 linker_section_ptr = eh->linker_section_pointer;
7266 /* Handle local symbol. */
7267 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7269 BFD_ASSERT (is_ppc_elf (input_bfd));
7270 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7271 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7274 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7277 BFD_ASSERT (linker_section_ptr != NULL);
7279 /* Offset will always be a multiple of four, so use the bottom bit
7280 as a "written" flag. */
7281 if ((linker_section_ptr->offset & 1) == 0)
7283 bfd_put_32 (lsect->section->owner,
7284 relocation + linker_section_ptr->addend,
7285 lsect->section->contents + linker_section_ptr->offset);
7286 linker_section_ptr->offset += 1;
7289 relocation = (lsect->section->output_section->vma
7290 + lsect->section->output_offset
7291 + linker_section_ptr->offset - 1
7292 - SYM_VAL (lsect->sym));
7296 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7297 lsect->name, (long) relocation, (long) relocation);
7303 #define PPC_LO(v) ((v) & 0xffff)
7304 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7305 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7308 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7309 struct bfd_link_info *info)
7311 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7312 bfd *output_bfd = info->output_bfd;
7315 plt = ((ent->plt.offset & ~1)
7316 + plt_sec->output_section->vma
7317 + plt_sec->output_offset);
7323 if (ent->addend >= 32768)
7325 + ent->sec->output_section->vma
7326 + ent->sec->output_offset);
7327 else if (htab->elf.hgot != NULL)
7328 got = SYM_VAL (htab->elf.hgot);
7332 if (plt + 0x8000 < 0x10000)
7334 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7336 bfd_put_32 (output_bfd, MTCTR_11, p);
7338 bfd_put_32 (output_bfd, BCTR, p);
7340 bfd_put_32 (output_bfd, NOP, p);
7345 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7347 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7349 bfd_put_32 (output_bfd, MTCTR_11, p);
7351 bfd_put_32 (output_bfd, BCTR, p);
7357 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7359 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7361 bfd_put_32 (output_bfd, MTCTR_11, p);
7363 bfd_put_32 (output_bfd, BCTR, p);
7368 /* Return true if symbol is defined statically. */
7371 is_static_defined (struct elf_link_hash_entry *h)
7373 return ((h->root.type == bfd_link_hash_defined
7374 || h->root.type == bfd_link_hash_defweak)
7375 && h->root.u.def.section != NULL
7376 && h->root.u.def.section->output_section != NULL);
7379 /* If INSN is an opcode that may be used with an @tls operand, return
7380 the transformed insn for TLS optimisation, otherwise return 0. If
7381 REG is non-zero only match an insn with RB or RA equal to REG. */
7384 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7388 if ((insn & (0x3f << 26)) != 31 << 26)
7391 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7392 rtra = insn & ((1 << 26) - (1 << 16));
7393 else if (((insn >> 16) & 0x1f) == reg)
7394 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7398 if ((insn & (0x3ff << 1)) == 266 << 1)
7401 else if ((insn & (0x1f << 1)) == 23 << 1
7402 && ((insn & (0x1f << 6)) < 14 << 6
7403 || ((insn & (0x1f << 6)) >= 16 << 6
7404 && (insn & (0x1f << 6)) < 24 << 6)))
7405 /* load and store indexed -> dform. */
7406 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7407 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7408 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7409 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7410 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7412 insn = (58 << 26) | 2;
7419 /* If INSN is an opcode that may be used with an @tprel operand, return
7420 the transformed insn for an undefined weak symbol, ie. with the
7421 thread pointer REG operand removed. Otherwise return 0. */
7424 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7426 if ((insn & (0x1f << 16)) == reg << 16
7427 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7428 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7429 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7430 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7431 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7432 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7433 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7434 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7435 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7436 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7437 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7438 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7439 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7440 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7441 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7442 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7444 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7445 && ((insn & 3) == 0 || (insn & 3) == 3))))
7447 insn &= ~(0x1f << 16);
7449 else if ((insn & (0x1f << 21)) == reg << 21
7450 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7451 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7452 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7454 insn &= ~(0x1f << 21);
7455 insn |= (insn & (0x1f << 16)) << 5;
7456 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7457 insn -= 2 >> 26; /* convert to ori,oris */
7465 is_insn_ds_form (unsigned int insn)
7467 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7468 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7469 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7470 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7474 is_insn_dq_form (unsigned int insn)
7476 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7479 /* The RELOCATE_SECTION function is called by the ELF backend linker
7480 to handle the relocations for a section.
7482 The relocs are always passed as Rela structures; if the section
7483 actually uses Rel structures, the r_addend field will always be
7486 This function is responsible for adjust the section contents as
7487 necessary, and (if using Rela relocs and generating a
7488 relocatable output file) adjusting the reloc addend as
7491 This function does not have to worry about setting the reloc
7492 address or the reloc symbol index.
7494 LOCAL_SYMS is a pointer to the swapped in local symbols.
7496 LOCAL_SECTIONS is an array giving the section in the input file
7497 corresponding to the st_shndx field of each local symbol.
7499 The global hash table entry for the global symbols can be found
7500 via elf_sym_hashes (input_bfd).
7502 When generating relocatable output, this function must handle
7503 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7504 going to be the section symbol corresponding to the output
7505 section, which means that the addend must be adjusted
7509 ppc_elf_relocate_section (bfd *output_bfd,
7510 struct bfd_link_info *info,
7512 asection *input_section,
7514 Elf_Internal_Rela *relocs,
7515 Elf_Internal_Sym *local_syms,
7516 asection **local_sections)
7518 Elf_Internal_Shdr *symtab_hdr;
7519 struct elf_link_hash_entry **sym_hashes;
7520 struct ppc_elf_link_hash_table *htab;
7521 Elf_Internal_Rela *rel;
7522 Elf_Internal_Rela *relend;
7523 Elf_Internal_Rela outrel;
7525 bfd_vma *local_got_offsets;
7526 bfd_boolean ret = TRUE;
7527 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7528 bfd_boolean is_vxworks_tls;
7531 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7532 "%ld relocations%s",
7533 input_bfd, input_section,
7534 (long) input_section->reloc_count,
7535 (info->relocatable) ? " (relocatable)" : "");
7538 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7540 /* Initialize howto table if not already done. */
7541 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7542 ppc_elf_howto_init ();
7544 htab = ppc_elf_hash_table (info);
7545 local_got_offsets = elf_local_got_offsets (input_bfd);
7546 symtab_hdr = &elf_symtab_hdr (input_bfd);
7547 sym_hashes = elf_sym_hashes (input_bfd);
7548 /* We have to handle relocations in vxworks .tls_vars sections
7549 specially, because the dynamic loader is 'weird'. */
7550 is_vxworks_tls = (htab->is_vxworks && info->shared
7551 && !strcmp (input_section->output_section->name,
7554 relend = relocs + input_section->reloc_count;
7555 for (; rel < relend; rel++)
7557 enum elf_ppc_reloc_type r_type;
7559 bfd_reloc_status_type r;
7560 Elf_Internal_Sym *sym;
7562 struct elf_link_hash_entry *h;
7563 const char *sym_name;
7564 reloc_howto_type *howto;
7565 unsigned long r_symndx;
7567 bfd_vma branch_bit, from;
7568 bfd_boolean unresolved_reloc;
7570 unsigned int tls_type, tls_mask, tls_gd;
7571 struct plt_entry **ifunc;
7573 r_type = ELF32_R_TYPE (rel->r_info);
7577 unresolved_reloc = FALSE;
7579 r_symndx = ELF32_R_SYM (rel->r_info);
7581 if (r_symndx < symtab_hdr->sh_info)
7583 sym = local_syms + r_symndx;
7584 sec = local_sections[r_symndx];
7585 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7587 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7591 bfd_boolean ignored;
7593 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7594 r_symndx, symtab_hdr, sym_hashes,
7596 unresolved_reloc, warned, ignored);
7598 sym_name = h->root.root.string;
7601 if (sec != NULL && discarded_section (sec))
7603 /* For relocs against symbols from removed linkonce sections,
7604 or sections discarded by a linker script, we just want the
7605 section contents zeroed. Avoid any special processing. */
7607 if (r_type < R_PPC_max)
7608 howto = ppc_elf_howto_table[r_type];
7609 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
7610 rel, 1, relend, howto, 0, contents);
7613 if (info->relocatable)
7616 && r_type == R_PPC_PLTREL24
7617 && rel->r_addend != 0)
7619 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7620 addend specifies the GOT pointer offset within .got2. */
7621 rel->r_addend += got2->output_offset;
7623 if (r_type != R_PPC_RELAX_PLT
7624 && r_type != R_PPC_RELAX_PLTREL24
7625 && r_type != R_PPC_RELAX)
7629 /* TLS optimizations. Replace instruction sequences and relocs
7630 based on information we collected in tls_optimize. We edit
7631 RELOCS so that --emit-relocs will output something sensible
7632 for the final instruction stream. */
7636 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7637 else if (local_got_offsets != NULL)
7639 struct plt_entry **local_plt;
7642 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7643 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7644 tls_mask = lgot_masks[r_symndx];
7647 /* Ensure reloc mapping code below stays sane. */
7648 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7649 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7650 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7651 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7652 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7653 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7654 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7655 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7662 case R_PPC_GOT_TPREL16:
7663 case R_PPC_GOT_TPREL16_LO:
7664 if ((tls_mask & TLS_TLS) != 0
7665 && (tls_mask & TLS_TPREL) == 0)
7669 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7671 insn |= 0x3c020000; /* addis 0,2,0 */
7672 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7673 r_type = R_PPC_TPREL16_HA;
7674 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7679 if ((tls_mask & TLS_TLS) != 0
7680 && (tls_mask & TLS_TPREL) == 0)
7684 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7685 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7688 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7689 r_type = R_PPC_TPREL16_LO;
7690 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7692 /* Was PPC_TLS which sits on insn boundary, now
7693 PPC_TPREL16_LO which is at low-order half-word. */
7694 rel->r_offset += d_offset;
7698 case R_PPC_GOT_TLSGD16_HI:
7699 case R_PPC_GOT_TLSGD16_HA:
7700 tls_gd = TLS_TPRELGD;
7701 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7705 case R_PPC_GOT_TLSLD16_HI:
7706 case R_PPC_GOT_TLSLD16_HA:
7707 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7710 if ((tls_mask & tls_gd) != 0)
7711 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7712 + R_PPC_GOT_TPREL16);
7715 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7716 rel->r_offset -= d_offset;
7717 r_type = R_PPC_NONE;
7719 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7723 case R_PPC_GOT_TLSGD16:
7724 case R_PPC_GOT_TLSGD16_LO:
7725 tls_gd = TLS_TPRELGD;
7726 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7730 case R_PPC_GOT_TLSLD16:
7731 case R_PPC_GOT_TLSLD16_LO:
7732 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7734 unsigned int insn1, insn2;
7738 offset = (bfd_vma) -1;
7739 /* If not using the newer R_PPC_TLSGD/LD to mark
7740 __tls_get_addr calls, we must trust that the call
7741 stays with its arg setup insns, ie. that the next
7742 reloc is the __tls_get_addr call associated with
7743 the current reloc. Edit both insns. */
7744 if (input_section->has_tls_get_addr_call
7746 && branch_reloc_hash_match (input_bfd, rel + 1,
7747 htab->tls_get_addr))
7748 offset = rel[1].r_offset;
7749 if ((tls_mask & tls_gd) != 0)
7752 insn1 = bfd_get_32 (output_bfd,
7753 contents + rel->r_offset - d_offset);
7754 insn1 &= (1 << 26) - 1;
7755 insn1 |= 32 << 26; /* lwz */
7756 if (offset != (bfd_vma) -1)
7758 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7759 insn2 = 0x7c631214; /* add 3,3,2 */
7760 bfd_put_32 (output_bfd, insn2, contents + offset);
7762 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7763 + R_PPC_GOT_TPREL16);
7764 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7769 insn1 = 0x3c620000; /* addis 3,2,0 */
7772 /* Was an LD reloc. */
7774 r_symndx < symtab_hdr->sh_info;
7776 if (local_sections[r_symndx] == sec)
7778 if (r_symndx >= symtab_hdr->sh_info)
7779 r_symndx = STN_UNDEF;
7780 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7781 if (r_symndx != STN_UNDEF)
7782 rel->r_addend -= (local_syms[r_symndx].st_value
7783 + sec->output_offset
7784 + sec->output_section->vma);
7786 r_type = R_PPC_TPREL16_HA;
7787 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7788 if (offset != (bfd_vma) -1)
7790 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7791 rel[1].r_offset = offset + d_offset;
7792 rel[1].r_addend = rel->r_addend;
7793 insn2 = 0x38630000; /* addi 3,3,0 */
7794 bfd_put_32 (output_bfd, insn2, contents + offset);
7797 bfd_put_32 (output_bfd, insn1,
7798 contents + rel->r_offset - d_offset);
7801 /* We changed the symbol on an LD reloc. Start over
7802 in order to get h, sym, sec etc. right. */
7810 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7813 bfd_vma offset = rel->r_offset;
7815 if ((tls_mask & TLS_TPRELGD) != 0)
7818 r_type = R_PPC_NONE;
7819 insn2 = 0x7c631214; /* add 3,3,2 */
7824 r_type = R_PPC_TPREL16_LO;
7825 rel->r_offset += d_offset;
7826 insn2 = 0x38630000; /* addi 3,3,0 */
7828 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7829 bfd_put_32 (output_bfd, insn2, contents + offset);
7830 /* Zap the reloc on the _tls_get_addr call too. */
7831 BFD_ASSERT (offset == rel[1].r_offset);
7832 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7837 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7842 r_symndx < symtab_hdr->sh_info;
7844 if (local_sections[r_symndx] == sec)
7846 if (r_symndx >= symtab_hdr->sh_info)
7847 r_symndx = STN_UNDEF;
7848 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7849 if (r_symndx != STN_UNDEF)
7850 rel->r_addend -= (local_syms[r_symndx].st_value
7851 + sec->output_offset
7852 + sec->output_section->vma);
7854 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7855 rel->r_offset += d_offset;
7856 insn2 = 0x38630000; /* addi 3,3,0 */
7857 bfd_put_32 (output_bfd, insn2,
7858 contents + rel->r_offset - d_offset);
7859 /* Zap the reloc on the _tls_get_addr call too. */
7860 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7861 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7868 /* Handle other relocations that tweak non-addend part of insn. */
7875 /* Branch taken prediction relocations. */
7876 case R_PPC_ADDR14_BRTAKEN:
7877 case R_PPC_REL14_BRTAKEN:
7878 branch_bit = BRANCH_PREDICT_BIT;
7881 /* Branch not taken prediction relocations. */
7882 case R_PPC_ADDR14_BRNTAKEN:
7883 case R_PPC_REL14_BRNTAKEN:
7887 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7888 insn &= ~BRANCH_PREDICT_BIT;
7891 from = (rel->r_offset
7892 + input_section->output_offset
7893 + input_section->output_section->vma);
7895 /* Invert 'y' bit if not the default. */
7896 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7897 insn ^= BRANCH_PREDICT_BIT;
7899 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7905 if (!htab->is_vxworks)
7907 struct plt_entry *ent;
7911 if (h->type == STT_GNU_IFUNC)
7912 ifunc = &h->plt.plist;
7914 else if (local_got_offsets != NULL
7915 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7917 struct plt_entry **local_plt;
7919 local_plt = (struct plt_entry **) (local_got_offsets
7920 + symtab_hdr->sh_info);
7921 ifunc = local_plt + r_symndx;
7927 || is_branch_reloc (r_type)))
7930 if (r_type == R_PPC_PLTREL24 && info->shared)
7931 addend = rel->r_addend;
7932 ent = find_plt_ent (ifunc, got2, addend);
7936 if (h == NULL && (ent->plt.offset & 1) == 0)
7938 Elf_Internal_Rela rela;
7941 rela.r_offset = (htab->iplt->output_section->vma
7942 + htab->iplt->output_offset
7944 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7945 rela.r_addend = relocation;
7946 loc = htab->reliplt->contents;
7947 loc += (htab->reliplt->reloc_count++
7948 * sizeof (Elf32_External_Rela));
7949 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7951 ent->plt.offset |= 1;
7953 if (h == NULL && (ent->glink_offset & 1) == 0)
7955 unsigned char *p = ((unsigned char *) htab->glink->contents
7956 + ent->glink_offset);
7957 write_glink_stub (ent, htab->iplt, p, info);
7958 ent->glink_offset |= 1;
7961 unresolved_reloc = FALSE;
7962 if (htab->plt_type == PLT_NEW
7963 || !htab->elf.dynamic_sections_created
7965 || h->dynindx == -1)
7966 relocation = (htab->glink->output_section->vma
7967 + htab->glink->output_offset
7968 + (ent->glink_offset & ~1));
7970 relocation = (htab->plt->output_section->vma
7971 + htab->plt->output_offset
7976 addend = rel->r_addend;
7979 if (r_type < R_PPC_max)
7980 howto = ppc_elf_howto_table[r_type];
7984 info->callbacks->einfo
7985 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
7986 input_bfd, (int) r_type, sym_name);
7988 bfd_set_error (bfd_error_bad_value);
7996 case R_PPC_EMB_MRKREF:
7997 case R_PPC_GNU_VTINHERIT:
7998 case R_PPC_GNU_VTENTRY:
8001 /* GOT16 relocations. Like an ADDR16 using the symbol's
8002 address in the GOT as relocation value instead of the
8003 symbol's value itself. Also, create a GOT entry for the
8004 symbol and put the symbol value there. */
8005 case R_PPC_GOT_TLSGD16:
8006 case R_PPC_GOT_TLSGD16_LO:
8007 case R_PPC_GOT_TLSGD16_HI:
8008 case R_PPC_GOT_TLSGD16_HA:
8009 tls_type = TLS_TLS | TLS_GD;
8012 case R_PPC_GOT_TLSLD16:
8013 case R_PPC_GOT_TLSLD16_LO:
8014 case R_PPC_GOT_TLSLD16_HI:
8015 case R_PPC_GOT_TLSLD16_HA:
8016 tls_type = TLS_TLS | TLS_LD;
8019 case R_PPC_GOT_TPREL16:
8020 case R_PPC_GOT_TPREL16_LO:
8021 case R_PPC_GOT_TPREL16_HI:
8022 case R_PPC_GOT_TPREL16_HA:
8023 tls_type = TLS_TLS | TLS_TPREL;
8026 case R_PPC_GOT_DTPREL16:
8027 case R_PPC_GOT_DTPREL16_LO:
8028 case R_PPC_GOT_DTPREL16_HI:
8029 case R_PPC_GOT_DTPREL16_HA:
8030 tls_type = TLS_TLS | TLS_DTPREL;
8034 case R_PPC_GOT16_LO:
8035 case R_PPC_GOT16_HI:
8036 case R_PPC_GOT16_HA:
8040 /* Relocation is to the entry for this symbol in the global
8046 if (htab->got == NULL)
8050 if (tls_type == (TLS_TLS | TLS_LD)
8052 || !h->def_dynamic))
8053 offp = &htab->tlsld_got.offset;
8057 dyn = htab->elf.dynamic_sections_created;
8058 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8060 && SYMBOL_REFERENCES_LOCAL (info, h)))
8061 /* This is actually a static link, or it is a
8062 -Bsymbolic link and the symbol is defined
8063 locally, or the symbol was forced to be local
8064 because of a version file. */
8068 BFD_ASSERT (h->dynindx != -1);
8070 unresolved_reloc = FALSE;
8072 offp = &h->got.offset;
8076 if (local_got_offsets == NULL)
8078 offp = &local_got_offsets[r_symndx];
8081 /* The offset must always be a multiple of 4. We use the
8082 least significant bit to record whether we have already
8083 processed this entry. */
8089 unsigned int tls_m = (tls_mask
8090 & (TLS_LD | TLS_GD | TLS_DTPREL
8091 | TLS_TPREL | TLS_TPRELGD));
8093 if (offp == &htab->tlsld_got.offset)
8099 /* We might have multiple got entries for this sym.
8100 Initialize them all. */
8105 if ((tls_m & TLS_LD) != 0)
8107 tls_ty = TLS_TLS | TLS_LD;
8110 else if ((tls_m & TLS_GD) != 0)
8112 tls_ty = TLS_TLS | TLS_GD;
8115 else if ((tls_m & TLS_DTPREL) != 0)
8117 tls_ty = TLS_TLS | TLS_DTPREL;
8118 tls_m &= ~TLS_DTPREL;
8120 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8122 tls_ty = TLS_TLS | TLS_TPREL;
8126 /* Generate relocs for the dynamic linker. */
8127 if ((info->shared || indx != 0)
8128 && (offp == &htab->tlsld_got.offset
8130 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8131 || h->root.type != bfd_link_hash_undefweak))
8133 asection *rsec = htab->relgot;
8137 rsec = htab->reliplt;
8138 outrel.r_offset = (htab->got->output_section->vma
8139 + htab->got->output_offset
8141 outrel.r_addend = 0;
8142 if (tls_ty & (TLS_LD | TLS_GD))
8144 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8145 if (tls_ty == (TLS_TLS | TLS_GD))
8147 loc = rsec->contents;
8148 loc += (rsec->reloc_count++
8149 * sizeof (Elf32_External_Rela));
8150 bfd_elf32_swap_reloca_out (output_bfd,
8152 outrel.r_offset += 4;
8154 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8157 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8158 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8159 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8160 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8162 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8163 else if (ifunc != NULL)
8164 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8166 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8167 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8169 outrel.r_addend += relocation;
8170 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8171 outrel.r_addend -= htab->elf.tls_sec->vma;
8173 loc = rsec->contents;
8174 loc += (rsec->reloc_count++
8175 * sizeof (Elf32_External_Rela));
8176 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8179 /* Init the .got section contents if we're not
8180 emitting a reloc. */
8183 bfd_vma value = relocation;
8185 if (tls_ty == (TLS_TLS | TLS_LD))
8187 else if (tls_ty != 0)
8189 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8190 if (tls_ty == (TLS_TLS | TLS_TPREL))
8191 value += DTP_OFFSET - TP_OFFSET;
8193 if (tls_ty == (TLS_TLS | TLS_GD))
8195 bfd_put_32 (output_bfd, value,
8196 htab->got->contents + off + 4);
8200 bfd_put_32 (output_bfd, value,
8201 htab->got->contents + off);
8205 if (tls_ty & (TLS_LD | TLS_GD))
8214 if (off >= (bfd_vma) -2)
8217 if ((tls_type & TLS_TLS) != 0)
8219 if (tls_type != (TLS_TLS | TLS_LD))
8221 if ((tls_mask & TLS_LD) != 0
8223 || !h->def_dynamic))
8225 if (tls_type != (TLS_TLS | TLS_GD))
8227 if ((tls_mask & TLS_GD) != 0)
8229 if (tls_type != (TLS_TLS | TLS_DTPREL))
8231 if ((tls_mask & TLS_DTPREL) != 0)
8238 relocation = (htab->got->output_section->vma
8239 + htab->got->output_offset
8241 - SYM_VAL (htab->elf.hgot));
8243 /* Addends on got relocations don't make much sense.
8244 x+off@got is actually x@got+off, and since the got is
8245 generated by a hash table traversal, the value in the
8246 got at entry m+n bears little relation to the entry m. */
8248 info->callbacks->einfo
8249 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8250 input_bfd, input_section, rel->r_offset,
8256 /* Relocations that need no special processing. */
8257 case R_PPC_LOCAL24PC:
8258 /* It makes no sense to point a local relocation
8259 at a symbol not in this object. */
8260 if (unresolved_reloc)
8262 if (! (*info->callbacks->undefined_symbol) (info,
8263 h->root.root.string,
8273 case R_PPC_DTPREL16:
8274 case R_PPC_DTPREL16_LO:
8275 case R_PPC_DTPREL16_HI:
8276 case R_PPC_DTPREL16_HA:
8277 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8280 /* Relocations that may need to be propagated if this is a shared
8283 case R_PPC_TPREL16_LO:
8284 case R_PPC_TPREL16_HI:
8285 case R_PPC_TPREL16_HA:
8287 && h->root.type == bfd_link_hash_undefweak
8288 && h->dynindx == -1)
8290 /* Make this relocation against an undefined weak symbol
8291 resolve to zero. This is really just a tweak, since
8292 code using weak externs ought to check that they are
8293 defined before using them. */
8294 bfd_byte *p = contents + rel->r_offset - d_offset;
8295 unsigned int insn = bfd_get_32 (output_bfd, p);
8296 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8298 bfd_put_32 (output_bfd, insn, p);
8301 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8302 /* The TPREL16 relocs shouldn't really be used in shared
8303 libs as they will result in DT_TEXTREL being set, but
8304 support them anyway. */
8308 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8311 case R_PPC_DTPREL32:
8312 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8315 case R_PPC_DTPMOD32:
8321 case R_PPC_REL16_LO:
8322 case R_PPC_REL16_HI:
8323 case R_PPC_REL16_HA:
8327 if (h == NULL || h == htab->elf.hgot)
8333 case R_PPC_ADDR16_LO:
8334 case R_PPC_ADDR16_HI:
8335 case R_PPC_ADDR16_HA:
8340 case R_PPC_VLE_REL8:
8341 case R_PPC_VLE_REL15:
8342 case R_PPC_VLE_REL24:
8345 case R_PPC_REL14_BRTAKEN:
8346 case R_PPC_REL14_BRNTAKEN:
8347 /* If these relocations are not to a named symbol, they can be
8348 handled right here, no need to bother the dynamic linker. */
8349 if (SYMBOL_CALLS_LOCAL (info, h)
8350 || h == htab->elf.hgot)
8356 case R_PPC_ADDR14_BRTAKEN:
8357 case R_PPC_ADDR14_BRNTAKEN:
8358 if (h != NULL && !info->shared)
8363 if ((input_section->flags & SEC_ALLOC) == 0
8369 && ((h->root.type == bfd_link_hash_undefined
8370 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8371 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8372 || (h->root.type == bfd_link_hash_undefweak
8373 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8374 && (must_be_dyn_reloc (info, r_type)
8375 || !SYMBOL_CALLS_LOCAL (info, h)))
8376 || (ELIMINATE_COPY_RELOCS
8381 && !h->def_regular))
8387 fprintf (stderr, "ppc_elf_relocate_section needs to "
8388 "create relocation for %s\n",
8389 (h && h->root.root.string
8390 ? h->root.root.string : "<unknown>"));
8393 /* When generating a shared object, these relocations
8394 are copied into the output file to be resolved at run
8396 sreloc = elf_section_data (input_section)->sreloc;
8398 sreloc = htab->reliplt;
8403 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8406 if (outrel.r_offset == (bfd_vma) -1
8407 || outrel.r_offset == (bfd_vma) -2)
8408 skip = (int) outrel.r_offset;
8409 outrel.r_offset += (input_section->output_section->vma
8410 + input_section->output_offset);
8413 memset (&outrel, 0, sizeof outrel);
8415 && (h->root.type == bfd_link_hash_undefined
8416 || h->root.type == bfd_link_hash_undefweak))
8417 || !SYMBOL_REFERENCES_LOCAL (info, h))
8419 BFD_ASSERT (h->dynindx != -1);
8420 unresolved_reloc = FALSE;
8421 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8422 outrel.r_addend = rel->r_addend;
8426 outrel.r_addend = relocation + rel->r_addend;
8428 if (r_type != R_PPC_ADDR32)
8434 /* If we get here when building a static
8435 executable, then the libc startup function
8436 responsible for applying indirect function
8437 relocations is going to complain about
8439 If we get here when building a dynamic
8440 executable, it will be because we have
8441 a text relocation. The dynamic loader
8442 will set the text segment writable and
8443 non-executable to apply text relocations.
8444 So we'll segfault when trying to run the
8445 indirection function to resolve the reloc. */
8446 info->callbacks->einfo
8447 (_("%P: %H: relocation %s for indirect "
8448 "function %s unsupported\n"),
8449 input_bfd, input_section, rel->r_offset,
8454 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8456 else if (sec == NULL || sec->owner == NULL)
8458 bfd_set_error (bfd_error_bad_value);
8465 /* We are turning this relocation into one
8466 against a section symbol. It would be
8467 proper to subtract the symbol's value,
8468 osec->vma, from the emitted reloc addend,
8469 but ld.so expects buggy relocs.
8470 FIXME: Why not always use a zero index? */
8471 osec = sec->output_section;
8472 indx = elf_section_data (osec)->dynindx;
8475 osec = htab->elf.text_index_section;
8476 indx = elf_section_data (osec)->dynindx;
8478 BFD_ASSERT (indx != 0);
8481 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8482 indx, osec->name, osec->flags,
8483 h->root.root.string);
8487 outrel.r_info = ELF32_R_INFO (indx, r_type);
8489 else if (ifunc != NULL)
8490 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8492 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8495 loc = sreloc->contents;
8496 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8497 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8502 /* This reloc will be computed at runtime. We clear the memory
8503 so that it contains predictable value. */
8505 && ((input_section->flags & SEC_ALLOC) != 0
8506 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8508 relocation = howto->pc_relative ? outrel.r_offset : 0;
8515 case R_PPC_RELAX_PLT:
8516 case R_PPC_RELAX_PLTREL24:
8519 struct plt_entry *ent;
8520 bfd_vma got2_addend = 0;
8522 if (r_type == R_PPC_RELAX_PLTREL24)
8525 got2_addend = addend;
8528 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8529 if (htab->plt_type == PLT_NEW)
8530 relocation = (htab->glink->output_section->vma
8531 + htab->glink->output_offset
8532 + ent->glink_offset);
8534 relocation = (htab->plt->output_section->vma
8535 + htab->plt->output_offset
8544 size_t insn_offset = rel->r_offset;
8549 relocation -= (input_section->output_section->vma
8550 + input_section->output_offset
8551 + rel->r_offset - 4);
8552 stub = shared_stub_entry;
8553 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8554 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8555 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8557 size = ARRAY_SIZE (shared_stub_entry) - 3;
8562 size = ARRAY_SIZE (stub_entry);
8565 relocation += addend;
8566 if (info->relocatable)
8569 /* First insn is HA, second is LO. */
8571 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8572 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8576 insn |= relocation & 0xffff;
8577 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8585 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8589 /* Rewrite the reloc and convert one of the trailing nop
8590 relocs to describe this relocation. */
8591 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8592 /* The relocs are at the bottom 2 bytes */
8593 rel[0].r_offset += d_offset;
8594 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8595 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8596 rel[1].r_offset += 4;
8597 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8602 /* Indirect .sdata relocation. */
8603 case R_PPC_EMB_SDAI16:
8604 BFD_ASSERT (htab->sdata[0].section != NULL);
8605 if (!is_static_defined (htab->sdata[0].sym))
8607 unresolved_reloc = TRUE;
8611 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8612 h, relocation, rel);
8616 /* Indirect .sdata2 relocation. */
8617 case R_PPC_EMB_SDA2I16:
8618 BFD_ASSERT (htab->sdata[1].section != NULL);
8619 if (!is_static_defined (htab->sdata[1].sym))
8621 unresolved_reloc = TRUE;
8625 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8626 h, relocation, rel);
8630 /* Handle the TOC16 reloc. We want to use the offset within the .got
8631 section, not the actual VMA. This is appropriate when generating
8632 an embedded ELF object, for which the .got section acts like the
8633 AIX .toc section. */
8634 case R_PPC_TOC16: /* phony GOT16 relocations */
8635 if (sec == NULL || sec->output_section == NULL)
8637 unresolved_reloc = TRUE;
8640 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8642 || strcmp (bfd_get_section_name (sec->owner, sec),
8645 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8648 case R_PPC_PLTREL24:
8649 if (h != NULL && ifunc == NULL)
8651 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8652 info->shared ? addend : 0);
8654 || htab->plt == NULL)
8656 /* We didn't make a PLT entry for this symbol. This
8657 happens when statically linking PIC code, or when
8658 using -Bsymbolic. */
8662 /* Relocation is to the entry for this symbol in the
8663 procedure linkage table. */
8664 unresolved_reloc = FALSE;
8665 if (htab->plt_type == PLT_NEW)
8666 relocation = (htab->glink->output_section->vma
8667 + htab->glink->output_offset
8668 + ent->glink_offset);
8670 relocation = (htab->plt->output_section->vma
8671 + htab->plt->output_offset
8676 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8677 addend specifies the GOT pointer offset within .got2.
8678 Don't apply it to the relocation field. */
8682 /* Relocate against _SDA_BASE_. */
8683 case R_PPC_SDAREL16:
8686 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8689 || sec->output_section == NULL
8690 || !is_static_defined (sda))
8692 unresolved_reloc = TRUE;
8695 addend -= SYM_VAL (sda);
8697 name = bfd_get_section_name (output_bfd, sec->output_section);
8698 if (! ((CONST_STRNEQ (name, ".sdata")
8699 && (name[6] == 0 || name[6] == '.'))
8700 || (CONST_STRNEQ (name, ".sbss")
8701 && (name[5] == 0 || name[5] == '.'))))
8703 info->callbacks->einfo
8704 (_("%P: %B: the target (%s) of a %s relocation is "
8705 "in the wrong output section (%s)\n"),
8714 /* Relocate against _SDA2_BASE_. */
8715 case R_PPC_EMB_SDA2REL:
8718 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8721 || sec->output_section == NULL
8722 || !is_static_defined (sda))
8724 unresolved_reloc = TRUE;
8727 addend -= SYM_VAL (sda);
8729 name = bfd_get_section_name (output_bfd, sec->output_section);
8730 if (! (CONST_STRNEQ (name, ".sdata2")
8731 || CONST_STRNEQ (name, ".sbss2")))
8733 info->callbacks->einfo
8734 (_("%P: %B: the target (%s) of a %s relocation is "
8735 "in the wrong output section (%s)\n"),
8744 case R_PPC_VLE_LO16A:
8745 relocation = (relocation + addend) & 0xffff;
8746 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8747 relocation, split16a_type);
8750 case R_PPC_VLE_LO16D:
8751 relocation = (relocation + addend) & 0xffff;
8752 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8753 relocation, split16d_type);
8756 case R_PPC_VLE_HI16A:
8757 relocation = ((relocation + addend) >> 16) & 0xffff;
8758 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8759 relocation, split16a_type);
8762 case R_PPC_VLE_HI16D:
8763 relocation = ((relocation + addend) >> 16) & 0xffff;
8764 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8765 relocation, split16d_type);
8768 case R_PPC_VLE_HA16A:
8770 bfd_vma value = relocation + addend;
8771 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8772 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8773 value, split16a_type);
8777 case R_PPC_VLE_HA16D:
8779 bfd_vma value = relocation + addend;
8780 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8781 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8782 value, split16d_type);
8786 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8787 case R_PPC_EMB_SDA21:
8788 case R_PPC_VLE_SDA21:
8789 case R_PPC_EMB_RELSDA:
8790 case R_PPC_VLE_SDA21_LO:
8794 struct elf_link_hash_entry *sda = NULL;
8796 if (sec == NULL || sec->output_section == NULL)
8798 unresolved_reloc = TRUE;
8802 name = bfd_get_section_name (output_bfd, sec->output_section);
8803 if (((CONST_STRNEQ (name, ".sdata")
8804 && (name[6] == 0 || name[6] == '.'))
8805 || (CONST_STRNEQ (name, ".sbss")
8806 && (name[5] == 0 || name[5] == '.'))))
8809 sda = htab->sdata[0].sym;
8811 else if (CONST_STRNEQ (name, ".sdata2")
8812 || CONST_STRNEQ (name, ".sbss2"))
8815 sda = htab->sdata[1].sym;
8817 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8818 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8824 info->callbacks->einfo
8825 (_("%P: %B: the target (%s) of a %s relocation is "
8826 "in the wrong output section (%s)\n"),
8832 bfd_set_error (bfd_error_bad_value);
8839 if (!is_static_defined (sda))
8841 unresolved_reloc = TRUE;
8844 addend -= SYM_VAL (sda);
8848 && (r_type == R_PPC_VLE_SDA21
8849 || r_type == R_PPC_VLE_SDA21_LO))
8851 /* Use the split20 format. */
8852 bfd_vma insn, bits12to15, bits21to31;
8853 bfd_vma value = (relocation + rel->r_offset) & 0xffff;
8854 /* Propagate sign bit, if necessary. */
8855 insn = (value & 0x8000) ? 0x70107800 : 0x70000000;
8856 bits12to15 = value & 0x700;
8857 bits21to31 = value & 0x7ff;
8860 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8863 else if (r_type == R_PPC_EMB_SDA21
8864 || r_type == R_PPC_VLE_SDA21
8865 || r_type == R_PPC_VLE_SDA21_LO)
8867 bfd_vma insn; /* Fill in register field. */
8869 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8870 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8871 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8876 case R_PPC_VLE_SDAREL_LO16A:
8877 case R_PPC_VLE_SDAREL_LO16D:
8878 case R_PPC_VLE_SDAREL_HI16A:
8879 case R_PPC_VLE_SDAREL_HI16D:
8880 case R_PPC_VLE_SDAREL_HA16A:
8881 case R_PPC_VLE_SDAREL_HA16D:
8886 struct elf_link_hash_entry *sda = NULL;
8888 if (sec == NULL || sec->output_section == NULL)
8890 unresolved_reloc = TRUE;
8894 name = bfd_get_section_name (output_bfd, sec->output_section);
8895 if (((CONST_STRNEQ (name, ".sdata")
8896 && (name[6] == 0 || name[6] == '.'))
8897 || (CONST_STRNEQ (name, ".sbss")
8898 && (name[5] == 0 || name[5] == '.'))))
8901 sda = htab->sdata[0].sym;
8903 else if (CONST_STRNEQ (name, ".sdata2")
8904 || CONST_STRNEQ (name, ".sbss2"))
8907 sda = htab->sdata[1].sym;
8911 (*_bfd_error_handler)
8912 (_("%B: the target (%s) of a %s relocation is "
8913 "in the wrong output section (%s)"),
8919 bfd_set_error (bfd_error_bad_value);
8926 if (!is_static_defined (sda))
8928 unresolved_reloc = TRUE;
8933 value = sda->root.u.def.section->output_section->vma
8934 + sda->root.u.def.section->output_offset;
8936 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8938 value = (value + addend) & 0xffff;
8939 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8940 value, split16a_type);
8942 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8944 value = (value + addend) & 0xffff;
8945 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8946 value, split16d_type);
8948 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8950 value = ((value + addend) >> 16) & 0xffff;
8951 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8952 value, split16a_type);
8954 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8956 value = ((value + addend) >> 16) & 0xffff;
8957 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8958 value, split16d_type);
8960 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
8963 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8964 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8965 value, split16a_type);
8967 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
8970 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8971 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8972 value, split16d_type);
8977 /* Relocate against the beginning of the section. */
8979 case R_PPC_SECTOFF_LO:
8980 case R_PPC_SECTOFF_HI:
8981 case R_PPC_SECTOFF_HA:
8982 if (sec == NULL || sec->output_section == NULL)
8984 unresolved_reloc = TRUE;
8987 addend -= sec->output_section->vma;
8990 /* Negative relocations. */
8991 case R_PPC_EMB_NADDR32:
8992 case R_PPC_EMB_NADDR16:
8993 case R_PPC_EMB_NADDR16_LO:
8994 case R_PPC_EMB_NADDR16_HI:
8995 case R_PPC_EMB_NADDR16_HA:
8996 addend -= 2 * relocation;
9000 case R_PPC_GLOB_DAT:
9001 case R_PPC_JMP_SLOT:
9002 case R_PPC_RELATIVE:
9003 case R_PPC_IRELATIVE:
9005 case R_PPC_PLTREL32:
9006 case R_PPC_PLT16_LO:
9007 case R_PPC_PLT16_HI:
9008 case R_PPC_PLT16_HA:
9010 case R_PPC_EMB_RELSEC16:
9011 case R_PPC_EMB_RELST_LO:
9012 case R_PPC_EMB_RELST_HI:
9013 case R_PPC_EMB_RELST_HA:
9014 case R_PPC_EMB_BIT_FLD:
9015 info->callbacks->einfo
9016 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9021 bfd_set_error (bfd_error_invalid_operation);
9026 /* Do any further special processing. */
9032 case R_PPC_ADDR16_HA:
9033 case R_PPC_REL16_HA:
9034 case R_PPC_SECTOFF_HA:
9035 case R_PPC_TPREL16_HA:
9036 case R_PPC_DTPREL16_HA:
9037 case R_PPC_EMB_NADDR16_HA:
9038 case R_PPC_EMB_RELST_HA:
9039 /* It's just possible that this symbol is a weak symbol
9040 that's not actually defined anywhere. In that case,
9041 'sec' would be NULL, and we should leave the symbol
9042 alone (it will be set to zero elsewhere in the link). */
9047 case R_PPC_PLT16_HA:
9048 case R_PPC_GOT16_HA:
9049 case R_PPC_GOT_TLSGD16_HA:
9050 case R_PPC_GOT_TLSLD16_HA:
9051 case R_PPC_GOT_TPREL16_HA:
9052 case R_PPC_GOT_DTPREL16_HA:
9053 /* Add 0x10000 if sign bit in 0:15 is set.
9054 Bits 0:15 are not used. */
9059 case R_PPC_ADDR16_LO:
9061 case R_PPC_GOT16_LO:
9062 case R_PPC_SDAREL16:
9064 case R_PPC_SECTOFF_LO:
9065 case R_PPC_DTPREL16:
9066 case R_PPC_DTPREL16_LO:
9068 case R_PPC_TPREL16_LO:
9069 case R_PPC_GOT_TLSGD16:
9070 case R_PPC_GOT_TLSGD16_LO:
9071 case R_PPC_GOT_TLSLD16:
9072 case R_PPC_GOT_TLSLD16_LO:
9073 case R_PPC_GOT_DTPREL16:
9074 case R_PPC_GOT_DTPREL16_LO:
9075 case R_PPC_GOT_TPREL16:
9076 case R_PPC_GOT_TPREL16_LO:
9078 /* The 32-bit ABI lacks proper relocations to deal with
9079 certain 64-bit instructions. Prevent damage to bits
9080 that make up part of the insn opcode. */
9081 unsigned int insn, mask, lobit;
9083 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
9085 if (is_insn_ds_form (insn))
9087 else if (is_insn_dq_form (insn))
9091 lobit = mask & (relocation + addend);
9095 info->callbacks->einfo
9096 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9097 input_bfd, input_section, rel->r_offset,
9098 howto->name, sym_name, mask + 1);
9099 bfd_set_error (bfd_error_bad_value);
9102 addend += insn & mask;
9108 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9109 "offset = %ld, addend = %ld\n",
9114 (long) rel->r_offset,
9118 if (unresolved_reloc
9119 && !((input_section->flags & SEC_DEBUGGING) != 0
9121 && _bfd_elf_section_offset (output_bfd, info, input_section,
9122 rel->r_offset) != (bfd_vma) -1)
9124 info->callbacks->einfo
9125 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9126 input_bfd, input_section, rel->r_offset,
9132 r = _bfd_final_link_relocate (howto,
9140 if (r != bfd_reloc_ok)
9142 if (r == bfd_reloc_overflow)
9147 && h->root.type == bfd_link_hash_undefweak
9148 && howto->pc_relative)
9150 /* Assume this is a call protected by other code that
9151 detect the symbol is undefined. If this is the case,
9152 we can safely ignore the overflow. If not, the
9153 program is hosed anyway, and a little warning isn't
9159 if (! (*info->callbacks->reloc_overflow) (info,
9160 (h ? &h->root : NULL),
9171 info->callbacks->einfo
9172 (_("%P: %H: %s reloc against `%s': error %d\n"),
9173 input_bfd, input_section, rel->r_offset,
9174 howto->name, sym_name, (int) r);
9181 fprintf (stderr, "\n");
9184 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9185 && input_section->size != input_section->rawsize
9186 && (strcmp (input_section->output_section->name, ".init") == 0
9187 || strcmp (input_section->output_section->name, ".fini") == 0))
9189 /* Branch around the trampolines. */
9190 unsigned int insn = B + input_section->size - input_section->rawsize;
9191 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9194 if (htab->params->ppc476_workaround
9195 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9196 && (!info->relocatable
9197 || (input_section->output_section->alignment_power
9198 >= htab->params->pagesize_p2)))
9200 struct ppc_elf_relax_info *relax_info;
9201 bfd_vma start_addr, end_addr, addr;
9202 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9204 relax_info = elf_section_data (input_section)->sec_info;
9205 if (relax_info->workaround_size != 0)
9206 memset (contents + input_section->size - relax_info->workaround_size,
9207 0, relax_info->workaround_size);
9209 /* The idea is: Replace the last instruction on a page with a
9210 branch to a patch area. Put the insn there followed by a
9211 branch back to the next page. Complicated a little by
9212 needing to handle moved conditional branches, and by not
9213 wanting to touch data-in-text. */
9215 start_addr = (input_section->output_section->vma
9216 + input_section->output_offset);
9217 end_addr = (start_addr + input_section->size
9218 - relax_info->workaround_size);
9219 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9223 bfd_vma offset = addr - start_addr;
9224 Elf_Internal_Rela *lo, *hi;
9225 bfd_boolean is_data;
9226 bfd_vma patch_off, patch_addr;
9229 /* Do we have a data reloc at this offset? If so, leave
9233 hi = lo + input_section->reloc_count;
9236 rel = lo + (hi - lo) / 2;
9237 if (rel->r_offset < offset)
9239 else if (rel->r_offset > offset)
9243 switch (ELF32_R_TYPE (rel->r_info))
9260 /* Some instructions can be left alone too. In this
9261 category are most insns that unconditionally change
9262 control flow, and isync. Of these, some *must* be left
9263 alone, for example, the "bcl 20, 31, label" used in pic
9264 sequences to give the address of the next insn. twui
9265 and twu apparently are not safe. */
9266 insn = bfd_get_32 (input_bfd, contents + offset);
9268 || (insn & (0x3f << 26)) == (18u << 26) /* b */
9269 || ((insn & (0x3f << 26)) == (16u << 26) /* bc always */
9270 && (insn & (0x14 << 21)) == (0x14 << 21))
9271 || ((insn & (0x3f << 26)) == (19u << 26) /* blr, bctr */
9272 && (insn & (0x14 << 21)) == (0x14 << 21)
9273 && (insn & (0x1ff << 1)) == (16u << 1))
9274 || (insn & (0x3f << 26)) == (17u << 26) /* sc */
9275 || ((insn & (0x3f << 26)) == (19u << 26)
9276 && ((insn & (0x3ff << 1)) == (38u << 1) /* rfmci */
9277 || (insn & (0x3ff << 1)) == (50u << 1) /* rfi */
9278 || (insn & (0x3ff << 1)) == (51u << 1) /* rfci */
9279 || (insn & (0x3ff << 1)) == (82u << 1) /* rfsvc */
9280 || (insn & (0x3ff << 1)) == (150u << 1))) /* isync */)
9283 patch_addr = (start_addr + input_section->size
9284 - relax_info->workaround_size);
9285 patch_addr = (patch_addr + 15) & -16;
9286 patch_off = patch_addr - start_addr;
9287 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9288 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9289 && (insn & 2) == 0 /* relative */)
9291 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9293 delta += offset - patch_off;
9294 if (delta + 0x8000 < 0x10000)
9296 bfd_put_32 (input_bfd,
9297 (insn & ~0xfffc) | (delta & 0xfffc),
9298 contents + patch_off);
9300 bfd_put_32 (input_bfd,
9301 B | ((offset + 4 - patch_off) & 0x3fffffc),
9302 contents + patch_off);
9307 bfd_put_32 (input_bfd,
9308 (insn & ~0xfffc) | 8,
9309 contents + patch_off);
9311 bfd_put_32 (input_bfd,
9312 B | ((offset + 4 - patch_off) & 0x3fffffc),
9313 contents + patch_off);
9315 bfd_put_32 (input_bfd,
9316 B | ((delta - 8) & 0x3fffffc),
9317 contents + patch_off);
9323 bfd_put_32 (input_bfd, insn, contents + patch_off);
9325 bfd_put_32 (input_bfd,
9326 B | ((offset + 4 - patch_off) & 0x3fffffc),
9327 contents + patch_off);
9330 BFD_ASSERT (patch_off <= input_section->size);
9331 relax_info->workaround_size = input_section->size - patch_off;
9338 /* Finish up dynamic symbol handling. We set the contents of various
9339 dynamic sections here. */
9342 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9343 struct bfd_link_info *info,
9344 struct elf_link_hash_entry *h,
9345 Elf_Internal_Sym *sym)
9347 struct ppc_elf_link_hash_table *htab;
9348 struct plt_entry *ent;
9349 bfd_boolean doneone;
9352 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9353 h->root.root.string);
9356 htab = ppc_elf_hash_table (info);
9357 BFD_ASSERT (htab->elf.dynobj != NULL);
9360 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9361 if (ent->plt.offset != (bfd_vma) -1)
9365 Elf_Internal_Rela rela;
9367 bfd_vma reloc_index;
9369 if (htab->plt_type == PLT_NEW
9370 || !htab->elf.dynamic_sections_created
9371 || h->dynindx == -1)
9372 reloc_index = ent->plt.offset / 4;
9375 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9376 / htab->plt_slot_size);
9377 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9378 && htab->plt_type == PLT_OLD)
9379 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9382 /* This symbol has an entry in the procedure linkage table.
9384 if (htab->plt_type == PLT_VXWORKS
9385 && htab->elf.dynamic_sections_created
9386 && h->dynindx != -1)
9389 const bfd_vma *plt_entry;
9391 /* The first three entries in .got.plt are reserved. */
9392 got_offset = (reloc_index + 3) * 4;
9394 /* Use the right PLT. */
9395 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9396 : ppc_elf_vxworks_plt_entry;
9398 /* Fill in the .plt on VxWorks. */
9401 bfd_put_32 (output_bfd,
9402 plt_entry[0] | PPC_HA (got_offset),
9403 htab->plt->contents + ent->plt.offset + 0);
9404 bfd_put_32 (output_bfd,
9405 plt_entry[1] | PPC_LO (got_offset),
9406 htab->plt->contents + ent->plt.offset + 4);
9410 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9412 bfd_put_32 (output_bfd,
9413 plt_entry[0] | PPC_HA (got_loc),
9414 htab->plt->contents + ent->plt.offset + 0);
9415 bfd_put_32 (output_bfd,
9416 plt_entry[1] | PPC_LO (got_loc),
9417 htab->plt->contents + ent->plt.offset + 4);
9420 bfd_put_32 (output_bfd, plt_entry[2],
9421 htab->plt->contents + ent->plt.offset + 8);
9422 bfd_put_32 (output_bfd, plt_entry[3],
9423 htab->plt->contents + ent->plt.offset + 12);
9425 /* This instruction is an immediate load. The value loaded is
9426 the byte offset of the R_PPC_JMP_SLOT relocation from the
9427 start of the .rela.plt section. The value is stored in the
9428 low-order 16 bits of the load instruction. */
9429 /* NOTE: It appears that this is now an index rather than a
9430 prescaled offset. */
9431 bfd_put_32 (output_bfd,
9432 plt_entry[4] | reloc_index,
9433 htab->plt->contents + ent->plt.offset + 16);
9434 /* This instruction is a PC-relative branch whose target is
9435 the start of the PLT section. The address of this branch
9436 instruction is 20 bytes beyond the start of this PLT entry.
9437 The address is encoded in bits 6-29, inclusive. The value
9438 stored is right-shifted by two bits, permitting a 26-bit
9440 bfd_put_32 (output_bfd,
9442 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9443 htab->plt->contents + ent->plt.offset + 20);
9444 bfd_put_32 (output_bfd, plt_entry[6],
9445 htab->plt->contents + ent->plt.offset + 24);
9446 bfd_put_32 (output_bfd, plt_entry[7],
9447 htab->plt->contents + ent->plt.offset + 28);
9449 /* Fill in the GOT entry corresponding to this PLT slot with
9450 the address immediately after the "bctr" instruction
9451 in this PLT entry. */
9452 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9453 + htab->plt->output_offset
9454 + ent->plt.offset + 16),
9455 htab->sgotplt->contents + got_offset);
9459 /* Fill in a couple of entries in .rela.plt.unloaded. */
9460 loc = htab->srelplt2->contents
9461 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9462 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9463 * sizeof (Elf32_External_Rela));
9465 /* Provide the @ha relocation for the first instruction. */
9466 rela.r_offset = (htab->plt->output_section->vma
9467 + htab->plt->output_offset
9468 + ent->plt.offset + 2);
9469 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9471 rela.r_addend = got_offset;
9472 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9473 loc += sizeof (Elf32_External_Rela);
9475 /* Provide the @l relocation for the second instruction. */
9476 rela.r_offset = (htab->plt->output_section->vma
9477 + htab->plt->output_offset
9478 + ent->plt.offset + 6);
9479 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9481 rela.r_addend = got_offset;
9482 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9483 loc += sizeof (Elf32_External_Rela);
9485 /* Provide a relocation for the GOT entry corresponding to this
9486 PLT slot. Point it at the middle of the .plt entry. */
9487 rela.r_offset = (htab->sgotplt->output_section->vma
9488 + htab->sgotplt->output_offset
9490 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9492 rela.r_addend = ent->plt.offset + 16;
9493 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9496 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9497 In particular, the offset for the relocation is not the
9498 address of the PLT entry for this function, as specified
9499 by the ABI. Instead, the offset is set to the address of
9500 the GOT slot for this function. See EABI 4.4.4.1. */
9501 rela.r_offset = (htab->sgotplt->output_section->vma
9502 + htab->sgotplt->output_offset
9508 asection *splt = htab->plt;
9509 if (!htab->elf.dynamic_sections_created
9510 || h->dynindx == -1)
9513 rela.r_offset = (splt->output_section->vma
9514 + splt->output_offset
9516 if (htab->plt_type == PLT_OLD
9517 || !htab->elf.dynamic_sections_created
9518 || h->dynindx == -1)
9520 /* We don't need to fill in the .plt. The ppc dynamic
9521 linker will fill it in. */
9525 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9526 + htab->glink->output_section->vma
9527 + htab->glink->output_offset);
9528 bfd_put_32 (output_bfd, val,
9529 splt->contents + ent->plt.offset);
9533 /* Fill in the entry in the .rela.plt section. */
9535 if (!htab->elf.dynamic_sections_created
9536 || h->dynindx == -1)
9538 BFD_ASSERT (h->type == STT_GNU_IFUNC
9540 && (h->root.type == bfd_link_hash_defined
9541 || h->root.type == bfd_link_hash_defweak));
9542 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9543 rela.r_addend = SYM_VAL (h);
9546 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9548 if (!htab->elf.dynamic_sections_created
9549 || h->dynindx == -1)
9550 loc = (htab->reliplt->contents
9551 + (htab->reliplt->reloc_count++
9552 * sizeof (Elf32_External_Rela)));
9554 loc = (htab->relplt->contents
9555 + reloc_index * sizeof (Elf32_External_Rela));
9556 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9558 if (!h->def_regular)
9560 /* Mark the symbol as undefined, rather than as
9561 defined in the .plt section. Leave the value if
9562 there were any relocations where pointer equality
9563 matters (this is a clue for the dynamic linker, to
9564 make function pointer comparisons work between an
9565 application and shared library), otherwise set it
9567 sym->st_shndx = SHN_UNDEF;
9568 if (!h->pointer_equality_needed)
9570 else if (!h->ref_regular_nonweak)
9572 /* This breaks function pointer comparisons, but
9573 that is better than breaking tests for a NULL
9574 function pointer. */
9578 else if (h->type == STT_GNU_IFUNC
9581 /* Set the value of ifunc symbols in a non-pie
9582 executable to the glink entry. This is to avoid
9583 text relocations. We can't do this for ifunc in
9584 allocate_dynrelocs, as we do for normal dynamic
9585 function symbols with plt entries, because we need
9586 to keep the original value around for the ifunc
9588 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9589 (output_bfd, htab->glink->output_section));
9590 sym->st_value = (ent->glink_offset
9591 + htab->glink->output_offset
9592 + htab->glink->output_section->vma);
9597 if (htab->plt_type == PLT_NEW
9598 || !htab->elf.dynamic_sections_created
9599 || h->dynindx == -1)
9602 asection *splt = htab->plt;
9603 if (!htab->elf.dynamic_sections_created
9604 || h->dynindx == -1)
9607 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9609 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
9611 bfd_put_32 (output_bfd, LWZ_11_3, p);
9613 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9615 bfd_put_32 (output_bfd, MR_0_3, p);
9617 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9619 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9621 bfd_put_32 (output_bfd, BEQLR, p);
9623 bfd_put_32 (output_bfd, MR_3_0, p);
9625 bfd_put_32 (output_bfd, NOP, p);
9629 write_glink_stub (ent, splt, p, info);
9632 /* We only need one non-PIC glink stub. */
9642 Elf_Internal_Rela rela;
9645 /* This symbols needs a copy reloc. Set it up. */
9648 fprintf (stderr, ", copy");
9651 BFD_ASSERT (h->dynindx != -1);
9653 if (ppc_elf_hash_entry (h)->has_sda_refs)
9657 BFD_ASSERT (s != NULL);
9659 rela.r_offset = SYM_VAL (h);
9660 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9662 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9663 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9667 fprintf (stderr, "\n");
9673 static enum elf_reloc_type_class
9674 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9675 const asection *rel_sec,
9676 const Elf_Internal_Rela *rela)
9678 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9680 if (rel_sec == htab->reliplt)
9681 return reloc_class_ifunc;
9683 switch (ELF32_R_TYPE (rela->r_info))
9685 case R_PPC_RELATIVE:
9686 return reloc_class_relative;
9687 case R_PPC_JMP_SLOT:
9688 return reloc_class_plt;
9690 return reloc_class_copy;
9692 return reloc_class_normal;
9696 /* Finish up the dynamic sections. */
9699 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9700 struct bfd_link_info *info)
9704 struct ppc_elf_link_hash_table *htab;
9707 bfd_boolean ret = TRUE;
9710 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9713 htab = ppc_elf_hash_table (info);
9714 dynobj = elf_hash_table (info)->dynobj;
9715 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9716 if (htab->is_vxworks)
9717 splt = bfd_get_linker_section (dynobj, ".plt");
9722 if (htab->elf.hgot != NULL)
9723 got = SYM_VAL (htab->elf.hgot);
9725 if (htab->elf.dynamic_sections_created)
9727 Elf32_External_Dyn *dyncon, *dynconend;
9729 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
9731 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9732 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9733 for (; dyncon < dynconend; dyncon++)
9735 Elf_Internal_Dyn dyn;
9738 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9743 if (htab->is_vxworks)
9747 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9751 dyn.d_un.d_val = htab->relplt->size;
9756 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9760 dyn.d_un.d_ptr = got;
9764 if (htab->is_vxworks)
9767 dyn.d_un.d_ptr -= htab->relplt->size;
9773 if (htab->is_vxworks
9774 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9779 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9783 if (htab->got != NULL)
9785 if (htab->elf.hgot->root.u.def.section == htab->got
9786 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
9788 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
9790 p += htab->elf.hgot->root.u.def.value;
9791 if (htab->plt_type == PLT_OLD)
9793 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9794 so that a function can easily find the address of
9795 _GLOBAL_OFFSET_TABLE_. */
9796 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9797 < htab->elf.hgot->root.u.def.section->size);
9798 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9803 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9804 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9805 < htab->elf.hgot->root.u.def.section->size);
9806 bfd_put_32 (output_bfd, val, p);
9811 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
9812 htab->elf.hgot->root.root.string,
9813 (htab->sgotplt != NULL
9814 ? htab->sgotplt->name : htab->got->name));
9815 bfd_set_error (bfd_error_bad_value);
9819 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
9822 /* Fill in the first entry in the VxWorks procedure linkage table. */
9823 if (splt && splt->size > 0)
9825 /* Use the right PLT. */
9826 const bfd_vma *plt_entry = (info->shared
9827 ? ppc_elf_vxworks_pic_plt0_entry
9828 : ppc_elf_vxworks_plt0_entry);
9832 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9834 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9835 splt->contents + 0);
9836 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9837 splt->contents + 4);
9841 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
9842 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
9844 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
9845 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
9846 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
9847 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
9848 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
9849 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
9853 Elf_Internal_Rela rela;
9856 loc = htab->srelplt2->contents;
9858 /* Output the @ha relocation for the first instruction. */
9859 rela.r_offset = (htab->plt->output_section->vma
9860 + htab->plt->output_offset
9862 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9864 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9865 loc += sizeof (Elf32_External_Rela);
9867 /* Output the @l relocation for the second instruction. */
9868 rela.r_offset = (htab->plt->output_section->vma
9869 + htab->plt->output_offset
9871 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9873 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9874 loc += sizeof (Elf32_External_Rela);
9876 /* Fix up the remaining relocations. They may have the wrong
9877 symbol index for _G_O_T_ or _P_L_T_ depending on the order
9878 in which symbols were output. */
9879 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
9881 Elf_Internal_Rela rel;
9883 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9884 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9885 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9886 loc += sizeof (Elf32_External_Rela);
9888 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9889 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9890 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9891 loc += sizeof (Elf32_External_Rela);
9893 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
9894 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9895 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9896 loc += sizeof (Elf32_External_Rela);
9901 if (htab->glink != NULL
9902 && htab->glink->contents != NULL
9903 && htab->elf.dynamic_sections_created)
9906 unsigned char *endp;
9911 * PIC glink code is the following:
9913 * # ith PLT code stub.
9914 * addis 11,30,(plt+(i-1)*4-got)@ha
9915 * lwz 11,(plt+(i-1)*4-got)@l(11)
9919 * # A table of branches, one for each plt entry.
9920 * # The idea is that the plt call stub loads ctr and r11 with these
9921 * # addresses, so (r11 - res_0) gives the plt index * 4.
9922 * res_0: b PLTresolve
9923 * res_1: b PLTresolve
9925 * # Some number of entries towards the end can be nops
9931 * addis 11,11,(1f-res_0)@ha
9934 * 1: addi 11,11,(1b-res_0)@l
9937 * sub 11,11,12 # r11 = index * 4
9938 * addis 12,12,(got+4-1b)@ha
9939 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
9940 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
9943 * add 11,0,11 # r11 = index * 12 = reloc offset.
9946 static const unsigned int pic_plt_resolve[] =
9967 * Non-PIC glink code is a little simpler.
9969 * # ith PLT code stub.
9970 * lis 11,(plt+(i-1)*4)@ha
9971 * lwz 11,(plt+(i-1)*4)@l(11)
9975 * The branch table is the same, then comes
9979 * addis 11,11,(-res_0)@ha
9980 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
9981 * addi 11,11,(-res_0)@l # r11 = index * 4
9984 * lwz 12,(got+8)@l(12) # got[2] contains the map address
9985 * add 11,0,11 # r11 = index * 12 = reloc offset.
9988 static const unsigned int plt_resolve[] =
10008 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10010 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10013 /* Build the branch table, one for each plt entry (less one),
10014 and perhaps some padding. */
10015 p = htab->glink->contents;
10016 p += htab->glink_pltresolve;
10017 endp = htab->glink->contents;
10018 endp += htab->glink->size - GLINK_PLTRESOLVE;
10019 while (p < endp - 8 * 4)
10021 bfd_put_32 (output_bfd, B + endp - p, p);
10026 bfd_put_32 (output_bfd, NOP, p);
10030 res0 = (htab->glink_pltresolve
10031 + htab->glink->output_section->vma
10032 + htab->glink->output_offset);
10034 /* Last comes the PLTresolve stub. */
10039 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10041 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
10044 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10046 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10047 + htab->glink->output_section->vma
10048 + htab->glink->output_offset);
10050 bfd_put_32 (output_bfd,
10051 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10052 bfd_put_32 (output_bfd,
10053 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10054 bfd_put_32 (output_bfd,
10055 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10056 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10058 bfd_put_32 (output_bfd,
10059 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10060 bfd_put_32 (output_bfd,
10061 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10065 bfd_put_32 (output_bfd,
10066 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10067 bfd_put_32 (output_bfd,
10068 LWZ_12_12 + 4, p + 9*4);
10073 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10075 bfd_put_32 (output_bfd, plt_resolve[i], p);
10078 p -= 4 * ARRAY_SIZE (plt_resolve);
10080 bfd_put_32 (output_bfd,
10081 LIS_12 + PPC_HA (got + 4), p + 0*4);
10082 bfd_put_32 (output_bfd,
10083 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10084 bfd_put_32 (output_bfd,
10085 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10086 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10088 bfd_put_32 (output_bfd,
10089 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10090 bfd_put_32 (output_bfd,
10091 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10095 bfd_put_32 (output_bfd,
10096 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10097 bfd_put_32 (output_bfd,
10098 LWZ_12_12 + 4, p + 6*4);
10103 if (htab->glink_eh_frame != NULL
10104 && htab->glink_eh_frame->contents != NULL)
10106 unsigned char *p = htab->glink_eh_frame->contents;
10109 p += sizeof (glink_eh_frame_cie);
10114 /* Offset to .glink. */
10115 val = (htab->glink->output_section->vma
10116 + htab->glink->output_offset);
10117 val -= (htab->glink_eh_frame->output_section->vma
10118 + htab->glink_eh_frame->output_offset);
10119 val -= p - htab->glink_eh_frame->contents;
10120 bfd_put_32 (htab->elf.dynobj, val, p);
10122 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10123 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10124 htab->glink_eh_frame,
10125 htab->glink_eh_frame->contents))
10132 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
10133 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10134 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
10135 #define TARGET_BIG_NAME "elf32-powerpc"
10136 #define ELF_ARCH bfd_arch_powerpc
10137 #define ELF_TARGET_ID PPC32_ELF_DATA
10138 #define ELF_MACHINE_CODE EM_PPC
10139 #ifdef __QNXTARGET__
10140 #define ELF_MAXPAGESIZE 0x1000
10142 #define ELF_MAXPAGESIZE 0x10000
10144 #define ELF_MINPAGESIZE 0x1000
10145 #define ELF_COMMONPAGESIZE 0x1000
10146 #define elf_info_to_howto ppc_elf_info_to_howto
10148 #ifdef EM_CYGNUS_POWERPC
10149 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10153 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10156 #define elf_backend_plt_not_loaded 1
10157 #define elf_backend_can_gc_sections 1
10158 #define elf_backend_can_refcount 1
10159 #define elf_backend_rela_normal 1
10160 #define elf_backend_caches_rawsize 1
10162 #define bfd_elf32_mkobject ppc_elf_mkobject
10163 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10164 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10165 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10166 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10167 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10168 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10169 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10171 #define elf_backend_object_p ppc_elf_object_p
10172 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10173 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10174 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10175 #define elf_backend_relocate_section ppc_elf_relocate_section
10176 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10177 #define elf_backend_check_relocs ppc_elf_check_relocs
10178 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10179 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10180 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10181 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10182 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10183 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10184 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10185 #define elf_backend_fake_sections ppc_elf_fake_sections
10186 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10187 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10188 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10189 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10190 #define elf_backend_write_core_note ppc_elf_write_core_note
10191 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10192 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10193 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10194 #define elf_backend_write_section ppc_elf_write_section
10195 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10196 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10197 #define elf_backend_action_discarded ppc_elf_action_discarded
10198 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10199 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10200 #define elf_backend_section_processing ppc_elf_section_processing
10202 #include "elf32-target.h"
10204 /* FreeBSD Target */
10206 #undef TARGET_LITTLE_SYM
10207 #undef TARGET_LITTLE_NAME
10209 #undef TARGET_BIG_SYM
10210 #define TARGET_BIG_SYM bfd_elf32_powerpc_freebsd_vec
10211 #undef TARGET_BIG_NAME
10212 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10215 #define ELF_OSABI ELFOSABI_FREEBSD
10218 #define elf32_bed elf32_powerpc_fbsd_bed
10220 #include "elf32-target.h"
10222 /* VxWorks Target */
10224 #undef TARGET_LITTLE_SYM
10225 #undef TARGET_LITTLE_NAME
10227 #undef TARGET_BIG_SYM
10228 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
10229 #undef TARGET_BIG_NAME
10230 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10234 /* VxWorks uses the elf default section flags for .plt. */
10235 static const struct bfd_elf_special_section *
10236 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10238 if (sec->name == NULL)
10241 if (strcmp (sec->name, ".plt") == 0)
10242 return _bfd_elf_get_sec_type_attr (abfd, sec);
10244 return ppc_elf_get_sec_type_attr (abfd, sec);
10247 /* Like ppc_elf_link_hash_table_create, but overrides
10248 appropriately for VxWorks. */
10249 static struct bfd_link_hash_table *
10250 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10252 struct bfd_link_hash_table *ret;
10254 ret = ppc_elf_link_hash_table_create (abfd);
10257 struct ppc_elf_link_hash_table *htab
10258 = (struct ppc_elf_link_hash_table *)ret;
10259 htab->is_vxworks = 1;
10260 htab->plt_type = PLT_VXWORKS;
10261 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10262 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10263 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10268 /* Tweak magic VxWorks symbols as they are loaded. */
10270 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10271 struct bfd_link_info *info,
10272 Elf_Internal_Sym *sym,
10273 const char **namep ATTRIBUTE_UNUSED,
10274 flagword *flagsp ATTRIBUTE_UNUSED,
10278 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10282 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10286 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10288 ppc_elf_final_write_processing(abfd, linker);
10289 elf_vxworks_final_write_processing(abfd, linker);
10292 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10294 #undef elf_backend_want_plt_sym
10295 #define elf_backend_want_plt_sym 1
10296 #undef elf_backend_want_got_plt
10297 #define elf_backend_want_got_plt 1
10298 #undef elf_backend_got_symbol_offset
10299 #define elf_backend_got_symbol_offset 0
10300 #undef elf_backend_plt_not_loaded
10301 #define elf_backend_plt_not_loaded 0
10302 #undef elf_backend_plt_readonly
10303 #define elf_backend_plt_readonly 1
10304 #undef elf_backend_got_header_size
10305 #define elf_backend_got_header_size 12
10307 #undef bfd_elf32_get_synthetic_symtab
10309 #undef bfd_elf32_bfd_link_hash_table_create
10310 #define bfd_elf32_bfd_link_hash_table_create \
10311 ppc_elf_vxworks_link_hash_table_create
10312 #undef elf_backend_add_symbol_hook
10313 #define elf_backend_add_symbol_hook \
10314 ppc_elf_vxworks_add_symbol_hook
10315 #undef elf_backend_link_output_symbol_hook
10316 #define elf_backend_link_output_symbol_hook \
10317 elf_vxworks_link_output_symbol_hook
10318 #undef elf_backend_final_write_processing
10319 #define elf_backend_final_write_processing \
10320 ppc_elf_vxworks_final_write_processing
10321 #undef elf_backend_get_sec_type_attr
10322 #define elf_backend_get_sec_type_attr \
10323 ppc_elf_vxworks_get_sec_type_attr
10324 #undef elf_backend_emit_relocs
10325 #define elf_backend_emit_relocs \
10326 elf_vxworks_emit_relocs
10329 #define elf32_bed ppc_elf_vxworks_bed
10330 #undef elf_backend_post_process_headers
10332 #include "elf32-target.h"
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