1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the
20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
24 /* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
36 #include "elf32-ppc.h"
37 #include "elf-vxworks.h"
39 /* RELA relocations are used here. */
41 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc_elf_unhandled_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 /* Branch prediction bit for branch taken relocs. */
47 #define BRANCH_PREDICT_BIT 0x200000
48 /* Mask to set RA in memory instructions. */
49 #define RA_REGISTER_MASK 0x001f0000
50 /* Value to shift register by to insert RA. */
51 #define RA_REGISTER_SHIFT 16
53 /* The name of the dynamic interpreter. This is put in the .interp
55 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
57 /* For old-style PLT. */
58 /* The number of single-slot PLT entries (the rest use two slots). */
59 #define PLT_NUM_SINGLE_ENTRIES 8192
61 /* For new-style .glink and .plt. */
62 #define GLINK_PLTRESOLVE 16*4
63 #define GLINK_ENTRY_SIZE 4*4
64 #define TLS_GET_ADDR_GLINK_SIZE 12*4
66 /* VxWorks uses its own plt layout, filled in by the static linker. */
68 /* The standard VxWorks PLT entry. */
69 #define VXWORKS_PLT_ENTRY_SIZE 32
70 static const bfd_vma ppc_elf_vxworks_plt_entry
71 [VXWORKS_PLT_ENTRY_SIZE / 4] =
73 0x3d800000, /* lis r12,0 */
74 0x818c0000, /* lwz r12,0(r12) */
75 0x7d8903a6, /* mtctr r12 */
76 0x4e800420, /* bctr */
77 0x39600000, /* li r11,0 */
78 0x48000000, /* b 14 <.PLT0resolve+0x4> */
82 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
83 [VXWORKS_PLT_ENTRY_SIZE / 4] =
85 0x3d9e0000, /* addis r12,r30,0 */
86 0x818c0000, /* lwz r12,0(r12) */
87 0x7d8903a6, /* mtctr r12 */
88 0x4e800420, /* bctr */
89 0x39600000, /* li r11,0 */
90 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
95 /* The initial VxWorks PLT entry. */
96 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
97 static const bfd_vma ppc_elf_vxworks_plt0_entry
98 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
100 0x3d800000, /* lis r12,0 */
101 0x398c0000, /* addi r12,r12,0 */
102 0x800c0008, /* lwz r0,8(r12) */
103 0x7c0903a6, /* mtctr r0 */
104 0x818c0004, /* lwz r12,4(r12) */
105 0x4e800420, /* bctr */
106 0x60000000, /* nop */
107 0x60000000, /* nop */
109 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
110 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
112 0x819e0008, /* lwz r12,8(r30) */
113 0x7d8903a6, /* mtctr r12 */
114 0x819e0004, /* lwz r12,4(r30) */
115 0x4e800420, /* bctr */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
119 0x60000000, /* nop */
122 /* For executables, we have some additional relocations in
123 .rela.plt.unloaded, for the kernel loader. */
125 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
126 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
127 /* The number of relocations in the PLTResolve slot. */
128 #define VXWORKS_PLTRESOLVE_RELOCS 2
129 /* The number of relocations in the PLTResolve slot when when creating
131 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
133 /* Some instructions. */
134 #define ADDIS_11_11 0x3d6b0000
135 #define ADDIS_11_30 0x3d7e0000
136 #define ADDIS_12_12 0x3d8c0000
137 #define ADDI_11_11 0x396b0000
138 #define ADD_0_11_11 0x7c0b5a14
139 #define ADD_3_12_2 0x7c6c1214
140 #define ADD_11_0_11 0x7d605a14
142 #define BCL_20_31 0x429f0005
143 #define BCTR 0x4e800420
144 #define BEQLR 0x4d820020
145 #define CMPWI_11_0 0x2c0b0000
146 #define LIS_11 0x3d600000
147 #define LIS_12 0x3d800000
148 #define LWZU_0_12 0x840c0000
149 #define LWZ_0_12 0x800c0000
150 #define LWZ_11_3 0x81630000
151 #define LWZ_11_11 0x816b0000
152 #define LWZ_11_30 0x817e0000
153 #define LWZ_12_3 0x81830000
154 #define LWZ_12_12 0x818c0000
155 #define MR_0_3 0x7c601b78
156 #define MR_3_0 0x7c030378
157 #define MFLR_0 0x7c0802a6
158 #define MFLR_12 0x7d8802a6
159 #define MTCTR_0 0x7c0903a6
160 #define MTCTR_11 0x7d6903a6
161 #define MTLR_0 0x7c0803a6
162 #define NOP 0x60000000
163 #define SUB_11_11_12 0x7d6c5850
165 /* Offset of tp and dtp pointers from start of TLS block. */
166 #define TP_OFFSET 0x7000
167 #define DTP_OFFSET 0x8000
169 /* The value of a defined global symbol. */
170 #define SYM_VAL(SYM) \
171 ((SYM)->root.u.def.section->output_section->vma \
172 + (SYM)->root.u.def.section->output_offset \
173 + (SYM)->root.u.def.value)
175 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
177 static reloc_howto_type ppc_elf_howto_raw[] = {
178 /* This reloc does nothing. */
179 HOWTO (R_PPC_NONE, /* type */
181 2, /* size (0 = byte, 1 = short, 2 = long) */
183 FALSE, /* pc_relative */
185 complain_overflow_bitfield, /* complain_on_overflow */
186 bfd_elf_generic_reloc, /* special_function */
187 "R_PPC_NONE", /* name */
188 FALSE, /* partial_inplace */
191 FALSE), /* pcrel_offset */
193 /* A standard 32 bit relocation. */
194 HOWTO (R_PPC_ADDR32, /* type */
196 2, /* size (0 = byte, 1 = short, 2 = long) */
198 FALSE, /* pc_relative */
200 complain_overflow_bitfield, /* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_PPC_ADDR32", /* name */
203 FALSE, /* partial_inplace */
205 0xffffffff, /* dst_mask */
206 FALSE), /* pcrel_offset */
208 /* An absolute 26 bit branch; the lower two bits must be zero.
209 FIXME: we don't check that, we just clear them. */
210 HOWTO (R_PPC_ADDR24, /* type */
212 2, /* size (0 = byte, 1 = short, 2 = long) */
214 FALSE, /* pc_relative */
216 complain_overflow_bitfield, /* complain_on_overflow */
217 bfd_elf_generic_reloc, /* special_function */
218 "R_PPC_ADDR24", /* name */
219 FALSE, /* partial_inplace */
221 0x3fffffc, /* dst_mask */
222 FALSE), /* pcrel_offset */
224 /* A standard 16 bit relocation. */
225 HOWTO (R_PPC_ADDR16, /* type */
227 1, /* size (0 = byte, 1 = short, 2 = long) */
229 FALSE, /* pc_relative */
231 complain_overflow_bitfield, /* complain_on_overflow */
232 bfd_elf_generic_reloc, /* special_function */
233 "R_PPC_ADDR16", /* name */
234 FALSE, /* partial_inplace */
236 0xffff, /* dst_mask */
237 FALSE), /* pcrel_offset */
239 /* A 16 bit relocation without overflow. */
240 HOWTO (R_PPC_ADDR16_LO, /* type */
242 1, /* size (0 = byte, 1 = short, 2 = long) */
244 FALSE, /* pc_relative */
246 complain_overflow_dont,/* complain_on_overflow */
247 bfd_elf_generic_reloc, /* special_function */
248 "R_PPC_ADDR16_LO", /* name */
249 FALSE, /* partial_inplace */
251 0xffff, /* dst_mask */
252 FALSE), /* pcrel_offset */
254 /* The high order 16 bits of an address. */
255 HOWTO (R_PPC_ADDR16_HI, /* type */
257 1, /* size (0 = byte, 1 = short, 2 = long) */
259 FALSE, /* pc_relative */
261 complain_overflow_dont, /* complain_on_overflow */
262 bfd_elf_generic_reloc, /* special_function */
263 "R_PPC_ADDR16_HI", /* name */
264 FALSE, /* partial_inplace */
266 0xffff, /* dst_mask */
267 FALSE), /* pcrel_offset */
269 /* The high order 16 bits of an address, plus 1 if the contents of
270 the low 16 bits, treated as a signed number, is negative. */
271 HOWTO (R_PPC_ADDR16_HA, /* type */
273 1, /* size (0 = byte, 1 = short, 2 = long) */
275 FALSE, /* pc_relative */
277 complain_overflow_dont, /* complain_on_overflow */
278 ppc_elf_addr16_ha_reloc, /* special_function */
279 "R_PPC_ADDR16_HA", /* name */
280 FALSE, /* partial_inplace */
282 0xffff, /* dst_mask */
283 FALSE), /* pcrel_offset */
285 /* An absolute 16 bit branch; the lower two bits must be zero.
286 FIXME: we don't check that, we just clear them. */
287 HOWTO (R_PPC_ADDR14, /* type */
289 2, /* size (0 = byte, 1 = short, 2 = long) */
291 FALSE, /* pc_relative */
293 complain_overflow_bitfield, /* complain_on_overflow */
294 bfd_elf_generic_reloc, /* special_function */
295 "R_PPC_ADDR14", /* name */
296 FALSE, /* partial_inplace */
298 0xfffc, /* dst_mask */
299 FALSE), /* pcrel_offset */
301 /* An absolute 16 bit branch, for which bit 10 should be set to
302 indicate that the branch is expected to be taken. The lower two
303 bits must be zero. */
304 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
306 2, /* size (0 = byte, 1 = short, 2 = long) */
308 FALSE, /* pc_relative */
310 complain_overflow_bitfield, /* complain_on_overflow */
311 bfd_elf_generic_reloc, /* special_function */
312 "R_PPC_ADDR14_BRTAKEN",/* name */
313 FALSE, /* partial_inplace */
315 0xfffc, /* dst_mask */
316 FALSE), /* pcrel_offset */
318 /* An absolute 16 bit branch, for which bit 10 should be set to
319 indicate that the branch is not expected to be taken. The lower
320 two bits must be zero. */
321 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
323 2, /* size (0 = byte, 1 = short, 2 = long) */
325 FALSE, /* pc_relative */
327 complain_overflow_bitfield, /* complain_on_overflow */
328 bfd_elf_generic_reloc, /* special_function */
329 "R_PPC_ADDR14_BRNTAKEN",/* name */
330 FALSE, /* partial_inplace */
332 0xfffc, /* dst_mask */
333 FALSE), /* pcrel_offset */
335 /* A relative 26 bit branch; the lower two bits must be zero. */
336 HOWTO (R_PPC_REL24, /* type */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
340 TRUE, /* pc_relative */
342 complain_overflow_signed, /* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_PPC_REL24", /* name */
345 FALSE, /* partial_inplace */
347 0x3fffffc, /* dst_mask */
348 TRUE), /* pcrel_offset */
350 /* A relative 16 bit branch; the lower two bits must be zero. */
351 HOWTO (R_PPC_REL14, /* type */
353 2, /* size (0 = byte, 1 = short, 2 = long) */
355 TRUE, /* pc_relative */
357 complain_overflow_signed, /* complain_on_overflow */
358 bfd_elf_generic_reloc, /* special_function */
359 "R_PPC_REL14", /* name */
360 FALSE, /* partial_inplace */
362 0xfffc, /* dst_mask */
363 TRUE), /* pcrel_offset */
365 /* A relative 16 bit branch. Bit 10 should be set to indicate that
366 the branch is expected to be taken. The lower two bits must be
368 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
372 TRUE, /* pc_relative */
374 complain_overflow_signed, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_PPC_REL14_BRTAKEN", /* name */
377 FALSE, /* partial_inplace */
379 0xfffc, /* dst_mask */
380 TRUE), /* pcrel_offset */
382 /* A relative 16 bit branch. Bit 10 should be set to indicate that
383 the branch is not expected to be taken. The lower two bits must
385 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
387 2, /* size (0 = byte, 1 = short, 2 = long) */
389 TRUE, /* pc_relative */
391 complain_overflow_signed, /* complain_on_overflow */
392 bfd_elf_generic_reloc, /* special_function */
393 "R_PPC_REL14_BRNTAKEN",/* name */
394 FALSE, /* partial_inplace */
396 0xfffc, /* dst_mask */
397 TRUE), /* pcrel_offset */
399 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
401 HOWTO (R_PPC_GOT16, /* type */
403 1, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE, /* pc_relative */
407 complain_overflow_signed, /* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_PPC_GOT16", /* name */
410 FALSE, /* partial_inplace */
412 0xffff, /* dst_mask */
413 FALSE), /* pcrel_offset */
415 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
417 HOWTO (R_PPC_GOT16_LO, /* type */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
421 FALSE, /* pc_relative */
423 complain_overflow_dont, /* complain_on_overflow */
424 bfd_elf_generic_reloc, /* special_function */
425 "R_PPC_GOT16_LO", /* name */
426 FALSE, /* partial_inplace */
428 0xffff, /* dst_mask */
429 FALSE), /* pcrel_offset */
431 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
433 HOWTO (R_PPC_GOT16_HI, /* type */
435 1, /* size (0 = byte, 1 = short, 2 = long) */
437 FALSE, /* pc_relative */
439 complain_overflow_bitfield, /* complain_on_overflow */
440 bfd_elf_generic_reloc, /* special_function */
441 "R_PPC_GOT16_HI", /* name */
442 FALSE, /* partial_inplace */
444 0xffff, /* dst_mask */
445 FALSE), /* pcrel_offset */
447 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
449 HOWTO (R_PPC_GOT16_HA, /* type */
451 1, /* size (0 = byte, 1 = short, 2 = long) */
453 FALSE, /* pc_relative */
455 complain_overflow_bitfield, /* complain_on_overflow */
456 ppc_elf_addr16_ha_reloc, /* special_function */
457 "R_PPC_GOT16_HA", /* name */
458 FALSE, /* partial_inplace */
460 0xffff, /* dst_mask */
461 FALSE), /* pcrel_offset */
463 /* Like R_PPC_REL24, but referring to the procedure linkage table
464 entry for the symbol. */
465 HOWTO (R_PPC_PLTREL24, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 TRUE, /* pc_relative */
471 complain_overflow_signed, /* complain_on_overflow */
472 bfd_elf_generic_reloc, /* special_function */
473 "R_PPC_PLTREL24", /* name */
474 FALSE, /* partial_inplace */
476 0x3fffffc, /* dst_mask */
477 TRUE), /* pcrel_offset */
479 /* This is used only by the dynamic linker. The symbol should exist
480 both in the object being run and in some shared library. The
481 dynamic linker copies the data addressed by the symbol from the
482 shared library into the object, because the object being
483 run has to have the data at some particular address. */
484 HOWTO (R_PPC_COPY, /* type */
486 2, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_bitfield, /* complain_on_overflow */
491 bfd_elf_generic_reloc, /* special_function */
492 "R_PPC_COPY", /* name */
493 FALSE, /* partial_inplace */
496 FALSE), /* pcrel_offset */
498 /* Like R_PPC_ADDR32, but used when setting global offset table
500 HOWTO (R_PPC_GLOB_DAT, /* type */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_bitfield, /* complain_on_overflow */
507 bfd_elf_generic_reloc, /* special_function */
508 "R_PPC_GLOB_DAT", /* name */
509 FALSE, /* partial_inplace */
511 0xffffffff, /* dst_mask */
512 FALSE), /* pcrel_offset */
514 /* Marks a procedure linkage table entry for a symbol. */
515 HOWTO (R_PPC_JMP_SLOT, /* type */
517 2, /* size (0 = byte, 1 = short, 2 = long) */
519 FALSE, /* pc_relative */
521 complain_overflow_bitfield, /* complain_on_overflow */
522 bfd_elf_generic_reloc, /* special_function */
523 "R_PPC_JMP_SLOT", /* name */
524 FALSE, /* partial_inplace */
527 FALSE), /* pcrel_offset */
529 /* Used only by the dynamic linker. When the object is run, this
530 longword is set to the load address of the object, plus the
532 HOWTO (R_PPC_RELATIVE, /* type */
534 2, /* size (0 = byte, 1 = short, 2 = long) */
536 FALSE, /* pc_relative */
538 complain_overflow_bitfield, /* complain_on_overflow */
539 bfd_elf_generic_reloc, /* special_function */
540 "R_PPC_RELATIVE", /* name */
541 FALSE, /* partial_inplace */
543 0xffffffff, /* dst_mask */
544 FALSE), /* pcrel_offset */
546 /* Like R_PPC_REL24, but uses the value of the symbol within the
547 object rather than the final value. Normally used for
548 _GLOBAL_OFFSET_TABLE_. */
549 HOWTO (R_PPC_LOCAL24PC, /* type */
551 2, /* size (0 = byte, 1 = short, 2 = long) */
553 TRUE, /* pc_relative */
555 complain_overflow_signed, /* complain_on_overflow */
556 bfd_elf_generic_reloc, /* special_function */
557 "R_PPC_LOCAL24PC", /* name */
558 FALSE, /* partial_inplace */
560 0x3fffffc, /* dst_mask */
561 TRUE), /* pcrel_offset */
563 /* Like R_PPC_ADDR32, but may be unaligned. */
564 HOWTO (R_PPC_UADDR32, /* type */
566 2, /* size (0 = byte, 1 = short, 2 = long) */
568 FALSE, /* pc_relative */
570 complain_overflow_bitfield, /* complain_on_overflow */
571 bfd_elf_generic_reloc, /* special_function */
572 "R_PPC_UADDR32", /* name */
573 FALSE, /* partial_inplace */
575 0xffffffff, /* dst_mask */
576 FALSE), /* pcrel_offset */
578 /* Like R_PPC_ADDR16, but may be unaligned. */
579 HOWTO (R_PPC_UADDR16, /* type */
581 1, /* size (0 = byte, 1 = short, 2 = long) */
583 FALSE, /* pc_relative */
585 complain_overflow_bitfield, /* complain_on_overflow */
586 bfd_elf_generic_reloc, /* special_function */
587 "R_PPC_UADDR16", /* name */
588 FALSE, /* partial_inplace */
590 0xffff, /* dst_mask */
591 FALSE), /* pcrel_offset */
593 /* 32-bit PC relative */
594 HOWTO (R_PPC_REL32, /* type */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
598 TRUE, /* pc_relative */
600 complain_overflow_bitfield, /* complain_on_overflow */
601 bfd_elf_generic_reloc, /* special_function */
602 "R_PPC_REL32", /* name */
603 FALSE, /* partial_inplace */
605 0xffffffff, /* dst_mask */
606 TRUE), /* pcrel_offset */
608 /* 32-bit relocation to the symbol's procedure linkage table.
609 FIXME: not supported. */
610 HOWTO (R_PPC_PLT32, /* type */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
614 FALSE, /* pc_relative */
616 complain_overflow_bitfield, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_PPC_PLT32", /* name */
619 FALSE, /* partial_inplace */
622 FALSE), /* pcrel_offset */
624 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
625 FIXME: not supported. */
626 HOWTO (R_PPC_PLTREL32, /* type */
628 2, /* size (0 = byte, 1 = short, 2 = long) */
630 TRUE, /* pc_relative */
632 complain_overflow_bitfield, /* complain_on_overflow */
633 bfd_elf_generic_reloc, /* special_function */
634 "R_PPC_PLTREL32", /* name */
635 FALSE, /* partial_inplace */
638 TRUE), /* pcrel_offset */
640 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
642 HOWTO (R_PPC_PLT16_LO, /* type */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
646 FALSE, /* pc_relative */
648 complain_overflow_dont, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC_PLT16_LO", /* name */
651 FALSE, /* partial_inplace */
653 0xffff, /* dst_mask */
654 FALSE), /* pcrel_offset */
656 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
658 HOWTO (R_PPC_PLT16_HI, /* type */
660 1, /* size (0 = byte, 1 = short, 2 = long) */
662 FALSE, /* pc_relative */
664 complain_overflow_bitfield, /* complain_on_overflow */
665 bfd_elf_generic_reloc, /* special_function */
666 "R_PPC_PLT16_HI", /* name */
667 FALSE, /* partial_inplace */
669 0xffff, /* dst_mask */
670 FALSE), /* pcrel_offset */
672 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
674 HOWTO (R_PPC_PLT16_HA, /* type */
676 1, /* size (0 = byte, 1 = short, 2 = long) */
678 FALSE, /* pc_relative */
680 complain_overflow_bitfield, /* complain_on_overflow */
681 ppc_elf_addr16_ha_reloc, /* special_function */
682 "R_PPC_PLT16_HA", /* name */
683 FALSE, /* partial_inplace */
685 0xffff, /* dst_mask */
686 FALSE), /* pcrel_offset */
688 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
690 HOWTO (R_PPC_SDAREL16, /* type */
692 1, /* size (0 = byte, 1 = short, 2 = long) */
694 FALSE, /* pc_relative */
696 complain_overflow_signed, /* complain_on_overflow */
697 bfd_elf_generic_reloc, /* special_function */
698 "R_PPC_SDAREL16", /* name */
699 FALSE, /* partial_inplace */
701 0xffff, /* dst_mask */
702 FALSE), /* pcrel_offset */
704 /* 16-bit section relative relocation. */
705 HOWTO (R_PPC_SECTOFF, /* type */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
709 FALSE, /* pc_relative */
711 complain_overflow_bitfield, /* complain_on_overflow */
712 bfd_elf_generic_reloc, /* special_function */
713 "R_PPC_SECTOFF", /* name */
714 FALSE, /* partial_inplace */
716 0xffff, /* dst_mask */
717 FALSE), /* pcrel_offset */
719 /* 16-bit lower half section relative relocation. */
720 HOWTO (R_PPC_SECTOFF_LO, /* type */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
724 FALSE, /* pc_relative */
726 complain_overflow_dont, /* complain_on_overflow */
727 bfd_elf_generic_reloc, /* special_function */
728 "R_PPC_SECTOFF_LO", /* name */
729 FALSE, /* partial_inplace */
731 0xffff, /* dst_mask */
732 FALSE), /* pcrel_offset */
734 /* 16-bit upper half section relative relocation. */
735 HOWTO (R_PPC_SECTOFF_HI, /* type */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
739 FALSE, /* pc_relative */
741 complain_overflow_bitfield, /* complain_on_overflow */
742 bfd_elf_generic_reloc, /* special_function */
743 "R_PPC_SECTOFF_HI", /* name */
744 FALSE, /* partial_inplace */
746 0xffff, /* dst_mask */
747 FALSE), /* pcrel_offset */
749 /* 16-bit upper half adjusted section relative relocation. */
750 HOWTO (R_PPC_SECTOFF_HA, /* type */
752 1, /* size (0 = byte, 1 = short, 2 = long) */
754 FALSE, /* pc_relative */
756 complain_overflow_bitfield, /* complain_on_overflow */
757 ppc_elf_addr16_ha_reloc, /* special_function */
758 "R_PPC_SECTOFF_HA", /* name */
759 FALSE, /* partial_inplace */
761 0xffff, /* dst_mask */
762 FALSE), /* pcrel_offset */
764 /* Marker relocs for TLS. */
767 2, /* size (0 = byte, 1 = short, 2 = long) */
769 FALSE, /* pc_relative */
771 complain_overflow_dont, /* complain_on_overflow */
772 bfd_elf_generic_reloc, /* special_function */
773 "R_PPC_TLS", /* name */
774 FALSE, /* partial_inplace */
777 FALSE), /* pcrel_offset */
781 2, /* size (0 = byte, 1 = short, 2 = long) */
783 FALSE, /* pc_relative */
785 complain_overflow_dont, /* complain_on_overflow */
786 bfd_elf_generic_reloc, /* special_function */
787 "R_PPC_TLSGD", /* name */
788 FALSE, /* partial_inplace */
791 FALSE), /* pcrel_offset */
795 2, /* size (0 = byte, 1 = short, 2 = long) */
797 FALSE, /* pc_relative */
799 complain_overflow_dont, /* complain_on_overflow */
800 bfd_elf_generic_reloc, /* special_function */
801 "R_PPC_TLSLD", /* name */
802 FALSE, /* partial_inplace */
805 FALSE), /* pcrel_offset */
807 /* Computes the load module index of the load module that contains the
808 definition of its TLS sym. */
809 HOWTO (R_PPC_DTPMOD32,
811 2, /* size (0 = byte, 1 = short, 2 = long) */
813 FALSE, /* pc_relative */
815 complain_overflow_dont, /* complain_on_overflow */
816 ppc_elf_unhandled_reloc, /* special_function */
817 "R_PPC_DTPMOD32", /* name */
818 FALSE, /* partial_inplace */
820 0xffffffff, /* dst_mask */
821 FALSE), /* pcrel_offset */
823 /* Computes a dtv-relative displacement, the difference between the value
824 of sym+add and the base address of the thread-local storage block that
825 contains the definition of sym, minus 0x8000. */
826 HOWTO (R_PPC_DTPREL32,
828 2, /* size (0 = byte, 1 = short, 2 = long) */
830 FALSE, /* pc_relative */
832 complain_overflow_dont, /* complain_on_overflow */
833 ppc_elf_unhandled_reloc, /* special_function */
834 "R_PPC_DTPREL32", /* name */
835 FALSE, /* partial_inplace */
837 0xffffffff, /* dst_mask */
838 FALSE), /* pcrel_offset */
840 /* A 16 bit dtprel reloc. */
841 HOWTO (R_PPC_DTPREL16,
843 1, /* size (0 = byte, 1 = short, 2 = long) */
845 FALSE, /* pc_relative */
847 complain_overflow_signed, /* complain_on_overflow */
848 ppc_elf_unhandled_reloc, /* special_function */
849 "R_PPC_DTPREL16", /* name */
850 FALSE, /* partial_inplace */
852 0xffff, /* dst_mask */
853 FALSE), /* pcrel_offset */
855 /* Like DTPREL16, but no overflow. */
856 HOWTO (R_PPC_DTPREL16_LO,
858 1, /* size (0 = byte, 1 = short, 2 = long) */
860 FALSE, /* pc_relative */
862 complain_overflow_dont, /* complain_on_overflow */
863 ppc_elf_unhandled_reloc, /* special_function */
864 "R_PPC_DTPREL16_LO", /* name */
865 FALSE, /* partial_inplace */
867 0xffff, /* dst_mask */
868 FALSE), /* pcrel_offset */
870 /* Like DTPREL16_LO, but next higher group of 16 bits. */
871 HOWTO (R_PPC_DTPREL16_HI,
873 1, /* size (0 = byte, 1 = short, 2 = long) */
875 FALSE, /* pc_relative */
877 complain_overflow_dont, /* complain_on_overflow */
878 ppc_elf_unhandled_reloc, /* special_function */
879 "R_PPC_DTPREL16_HI", /* name */
880 FALSE, /* partial_inplace */
882 0xffff, /* dst_mask */
883 FALSE), /* pcrel_offset */
885 /* Like DTPREL16_HI, but adjust for low 16 bits. */
886 HOWTO (R_PPC_DTPREL16_HA,
888 1, /* size (0 = byte, 1 = short, 2 = long) */
890 FALSE, /* pc_relative */
892 complain_overflow_dont, /* complain_on_overflow */
893 ppc_elf_unhandled_reloc, /* special_function */
894 "R_PPC_DTPREL16_HA", /* name */
895 FALSE, /* partial_inplace */
897 0xffff, /* dst_mask */
898 FALSE), /* pcrel_offset */
900 /* Computes a tp-relative displacement, the difference between the value of
901 sym+add and the value of the thread pointer (r13). */
902 HOWTO (R_PPC_TPREL32,
904 2, /* size (0 = byte, 1 = short, 2 = long) */
906 FALSE, /* pc_relative */
908 complain_overflow_dont, /* complain_on_overflow */
909 ppc_elf_unhandled_reloc, /* special_function */
910 "R_PPC_TPREL32", /* name */
911 FALSE, /* partial_inplace */
913 0xffffffff, /* dst_mask */
914 FALSE), /* pcrel_offset */
916 /* A 16 bit tprel reloc. */
917 HOWTO (R_PPC_TPREL16,
919 1, /* size (0 = byte, 1 = short, 2 = long) */
921 FALSE, /* pc_relative */
923 complain_overflow_signed, /* complain_on_overflow */
924 ppc_elf_unhandled_reloc, /* special_function */
925 "R_PPC_TPREL16", /* name */
926 FALSE, /* partial_inplace */
928 0xffff, /* dst_mask */
929 FALSE), /* pcrel_offset */
931 /* Like TPREL16, but no overflow. */
932 HOWTO (R_PPC_TPREL16_LO,
934 1, /* size (0 = byte, 1 = short, 2 = long) */
936 FALSE, /* pc_relative */
938 complain_overflow_dont, /* complain_on_overflow */
939 ppc_elf_unhandled_reloc, /* special_function */
940 "R_PPC_TPREL16_LO", /* name */
941 FALSE, /* partial_inplace */
943 0xffff, /* dst_mask */
944 FALSE), /* pcrel_offset */
946 /* Like TPREL16_LO, but next higher group of 16 bits. */
947 HOWTO (R_PPC_TPREL16_HI,
949 1, /* size (0 = byte, 1 = short, 2 = long) */
951 FALSE, /* pc_relative */
953 complain_overflow_dont, /* complain_on_overflow */
954 ppc_elf_unhandled_reloc, /* special_function */
955 "R_PPC_TPREL16_HI", /* name */
956 FALSE, /* partial_inplace */
958 0xffff, /* dst_mask */
959 FALSE), /* pcrel_offset */
961 /* Like TPREL16_HI, but adjust for low 16 bits. */
962 HOWTO (R_PPC_TPREL16_HA,
964 1, /* size (0 = byte, 1 = short, 2 = long) */
966 FALSE, /* pc_relative */
968 complain_overflow_dont, /* complain_on_overflow */
969 ppc_elf_unhandled_reloc, /* special_function */
970 "R_PPC_TPREL16_HA", /* name */
971 FALSE, /* partial_inplace */
973 0xffff, /* dst_mask */
974 FALSE), /* pcrel_offset */
976 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
977 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
978 to the first entry. */
979 HOWTO (R_PPC_GOT_TLSGD16,
981 1, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE, /* pc_relative */
985 complain_overflow_signed, /* complain_on_overflow */
986 ppc_elf_unhandled_reloc, /* special_function */
987 "R_PPC_GOT_TLSGD16", /* name */
988 FALSE, /* partial_inplace */
990 0xffff, /* dst_mask */
991 FALSE), /* pcrel_offset */
993 /* Like GOT_TLSGD16, but no overflow. */
994 HOWTO (R_PPC_GOT_TLSGD16_LO,
996 1, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE, /* pc_relative */
1000 complain_overflow_dont, /* complain_on_overflow */
1001 ppc_elf_unhandled_reloc, /* special_function */
1002 "R_PPC_GOT_TLSGD16_LO", /* name */
1003 FALSE, /* partial_inplace */
1005 0xffff, /* dst_mask */
1006 FALSE), /* pcrel_offset */
1008 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1009 HOWTO (R_PPC_GOT_TLSGD16_HI,
1010 16, /* rightshift */
1011 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 FALSE, /* pc_relative */
1015 complain_overflow_dont, /* complain_on_overflow */
1016 ppc_elf_unhandled_reloc, /* special_function */
1017 "R_PPC_GOT_TLSGD16_HI", /* name */
1018 FALSE, /* partial_inplace */
1020 0xffff, /* dst_mask */
1021 FALSE), /* pcrel_offset */
1023 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1024 HOWTO (R_PPC_GOT_TLSGD16_HA,
1025 16, /* rightshift */
1026 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 FALSE, /* pc_relative */
1030 complain_overflow_dont, /* complain_on_overflow */
1031 ppc_elf_unhandled_reloc, /* special_function */
1032 "R_PPC_GOT_TLSGD16_HA", /* name */
1033 FALSE, /* partial_inplace */
1035 0xffff, /* dst_mask */
1036 FALSE), /* pcrel_offset */
1038 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1039 with values (sym+add)@dtpmod and zero, and computes the offset to the
1041 HOWTO (R_PPC_GOT_TLSLD16,
1043 1, /* size (0 = byte, 1 = short, 2 = long) */
1045 FALSE, /* pc_relative */
1047 complain_overflow_signed, /* complain_on_overflow */
1048 ppc_elf_unhandled_reloc, /* special_function */
1049 "R_PPC_GOT_TLSLD16", /* name */
1050 FALSE, /* partial_inplace */
1052 0xffff, /* dst_mask */
1053 FALSE), /* pcrel_offset */
1055 /* Like GOT_TLSLD16, but no overflow. */
1056 HOWTO (R_PPC_GOT_TLSLD16_LO,
1058 1, /* size (0 = byte, 1 = short, 2 = long) */
1060 FALSE, /* pc_relative */
1062 complain_overflow_dont, /* complain_on_overflow */
1063 ppc_elf_unhandled_reloc, /* special_function */
1064 "R_PPC_GOT_TLSLD16_LO", /* name */
1065 FALSE, /* partial_inplace */
1067 0xffff, /* dst_mask */
1068 FALSE), /* pcrel_offset */
1070 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1071 HOWTO (R_PPC_GOT_TLSLD16_HI,
1072 16, /* rightshift */
1073 1, /* size (0 = byte, 1 = short, 2 = long) */
1075 FALSE, /* pc_relative */
1077 complain_overflow_dont, /* complain_on_overflow */
1078 ppc_elf_unhandled_reloc, /* special_function */
1079 "R_PPC_GOT_TLSLD16_HI", /* name */
1080 FALSE, /* partial_inplace */
1082 0xffff, /* dst_mask */
1083 FALSE), /* pcrel_offset */
1085 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1086 HOWTO (R_PPC_GOT_TLSLD16_HA,
1087 16, /* rightshift */
1088 1, /* size (0 = byte, 1 = short, 2 = long) */
1090 FALSE, /* pc_relative */
1092 complain_overflow_dont, /* complain_on_overflow */
1093 ppc_elf_unhandled_reloc, /* special_function */
1094 "R_PPC_GOT_TLSLD16_HA", /* name */
1095 FALSE, /* partial_inplace */
1097 0xffff, /* dst_mask */
1098 FALSE), /* pcrel_offset */
1100 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1101 the offset to the entry. */
1102 HOWTO (R_PPC_GOT_DTPREL16,
1104 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 FALSE, /* pc_relative */
1108 complain_overflow_signed, /* complain_on_overflow */
1109 ppc_elf_unhandled_reloc, /* special_function */
1110 "R_PPC_GOT_DTPREL16", /* name */
1111 FALSE, /* partial_inplace */
1113 0xffff, /* dst_mask */
1114 FALSE), /* pcrel_offset */
1116 /* Like GOT_DTPREL16, but no overflow. */
1117 HOWTO (R_PPC_GOT_DTPREL16_LO,
1119 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 FALSE, /* pc_relative */
1123 complain_overflow_dont, /* complain_on_overflow */
1124 ppc_elf_unhandled_reloc, /* special_function */
1125 "R_PPC_GOT_DTPREL16_LO", /* name */
1126 FALSE, /* partial_inplace */
1128 0xffff, /* dst_mask */
1129 FALSE), /* pcrel_offset */
1131 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1132 HOWTO (R_PPC_GOT_DTPREL16_HI,
1133 16, /* rightshift */
1134 1, /* size (0 = byte, 1 = short, 2 = long) */
1136 FALSE, /* pc_relative */
1138 complain_overflow_dont, /* complain_on_overflow */
1139 ppc_elf_unhandled_reloc, /* special_function */
1140 "R_PPC_GOT_DTPREL16_HI", /* name */
1141 FALSE, /* partial_inplace */
1143 0xffff, /* dst_mask */
1144 FALSE), /* pcrel_offset */
1146 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1147 HOWTO (R_PPC_GOT_DTPREL16_HA,
1148 16, /* rightshift */
1149 1, /* size (0 = byte, 1 = short, 2 = long) */
1151 FALSE, /* pc_relative */
1153 complain_overflow_dont, /* complain_on_overflow */
1154 ppc_elf_unhandled_reloc, /* special_function */
1155 "R_PPC_GOT_DTPREL16_HA", /* name */
1156 FALSE, /* partial_inplace */
1158 0xffff, /* dst_mask */
1159 FALSE), /* pcrel_offset */
1161 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1162 offset to the entry. */
1163 HOWTO (R_PPC_GOT_TPREL16,
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE, /* pc_relative */
1169 complain_overflow_signed, /* complain_on_overflow */
1170 ppc_elf_unhandled_reloc, /* special_function */
1171 "R_PPC_GOT_TPREL16", /* name */
1172 FALSE, /* partial_inplace */
1174 0xffff, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1177 /* Like GOT_TPREL16, but no overflow. */
1178 HOWTO (R_PPC_GOT_TPREL16_LO,
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE, /* pc_relative */
1184 complain_overflow_dont, /* complain_on_overflow */
1185 ppc_elf_unhandled_reloc, /* special_function */
1186 "R_PPC_GOT_TPREL16_LO", /* name */
1187 FALSE, /* partial_inplace */
1189 0xffff, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1192 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1193 HOWTO (R_PPC_GOT_TPREL16_HI,
1194 16, /* rightshift */
1195 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 FALSE, /* pc_relative */
1199 complain_overflow_dont, /* complain_on_overflow */
1200 ppc_elf_unhandled_reloc, /* special_function */
1201 "R_PPC_GOT_TPREL16_HI", /* name */
1202 FALSE, /* partial_inplace */
1204 0xffff, /* dst_mask */
1205 FALSE), /* pcrel_offset */
1207 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1208 HOWTO (R_PPC_GOT_TPREL16_HA,
1209 16, /* rightshift */
1210 1, /* size (0 = byte, 1 = short, 2 = long) */
1212 FALSE, /* pc_relative */
1214 complain_overflow_dont, /* complain_on_overflow */
1215 ppc_elf_unhandled_reloc, /* special_function */
1216 "R_PPC_GOT_TPREL16_HA", /* name */
1217 FALSE, /* partial_inplace */
1219 0xffff, /* dst_mask */
1220 FALSE), /* pcrel_offset */
1222 /* The remaining relocs are from the Embedded ELF ABI, and are not
1223 in the SVR4 ELF ABI. */
1225 /* 32 bit value resulting from the addend minus the symbol. */
1226 HOWTO (R_PPC_EMB_NADDR32, /* type */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 FALSE, /* pc_relative */
1232 complain_overflow_bitfield, /* complain_on_overflow */
1233 bfd_elf_generic_reloc, /* special_function */
1234 "R_PPC_EMB_NADDR32", /* name */
1235 FALSE, /* partial_inplace */
1237 0xffffffff, /* dst_mask */
1238 FALSE), /* pcrel_offset */
1240 /* 16 bit value resulting from the addend minus the symbol. */
1241 HOWTO (R_PPC_EMB_NADDR16, /* type */
1243 1, /* size (0 = byte, 1 = short, 2 = long) */
1245 FALSE, /* pc_relative */
1247 complain_overflow_bitfield, /* complain_on_overflow */
1248 bfd_elf_generic_reloc, /* special_function */
1249 "R_PPC_EMB_NADDR16", /* name */
1250 FALSE, /* partial_inplace */
1252 0xffff, /* dst_mask */
1253 FALSE), /* pcrel_offset */
1255 /* 16 bit value resulting from the addend minus the symbol. */
1256 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1258 1, /* size (0 = byte, 1 = short, 2 = long) */
1260 FALSE, /* pc_relative */
1262 complain_overflow_dont,/* complain_on_overflow */
1263 bfd_elf_generic_reloc, /* special_function */
1264 "R_PPC_EMB_ADDR16_LO", /* name */
1265 FALSE, /* partial_inplace */
1267 0xffff, /* dst_mask */
1268 FALSE), /* pcrel_offset */
1270 /* The high order 16 bits of the addend minus the symbol. */
1271 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1272 16, /* rightshift */
1273 1, /* size (0 = byte, 1 = short, 2 = long) */
1275 FALSE, /* pc_relative */
1277 complain_overflow_dont, /* complain_on_overflow */
1278 bfd_elf_generic_reloc, /* special_function */
1279 "R_PPC_EMB_NADDR16_HI", /* name */
1280 FALSE, /* partial_inplace */
1282 0xffff, /* dst_mask */
1283 FALSE), /* pcrel_offset */
1285 /* The high order 16 bits of the result of the addend minus the address,
1286 plus 1 if the contents of the low 16 bits, treated as a signed number,
1288 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1289 16, /* rightshift */
1290 1, /* size (0 = byte, 1 = short, 2 = long) */
1292 FALSE, /* pc_relative */
1294 complain_overflow_dont, /* complain_on_overflow */
1295 ppc_elf_addr16_ha_reloc, /* special_function */
1296 "R_PPC_EMB_NADDR16_HA", /* name */
1297 FALSE, /* partial_inplace */
1299 0xffff, /* dst_mask */
1300 FALSE), /* pcrel_offset */
1302 /* 16 bit value resulting from allocating a 4 byte word to hold an
1303 address in the .sdata section, and returning the offset from
1304 _SDA_BASE_ for that relocation. */
1305 HOWTO (R_PPC_EMB_SDAI16, /* type */
1307 1, /* size (0 = byte, 1 = short, 2 = long) */
1309 FALSE, /* pc_relative */
1311 complain_overflow_signed, /* complain_on_overflow */
1312 bfd_elf_generic_reloc, /* special_function */
1313 "R_PPC_EMB_SDAI16", /* name */
1314 FALSE, /* partial_inplace */
1316 0xffff, /* dst_mask */
1317 FALSE), /* pcrel_offset */
1319 /* 16 bit value resulting from allocating a 4 byte word to hold an
1320 address in the .sdata2 section, and returning the offset from
1321 _SDA2_BASE_ for that relocation. */
1322 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1324 1, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE, /* pc_relative */
1328 complain_overflow_signed, /* complain_on_overflow */
1329 bfd_elf_generic_reloc, /* special_function */
1330 "R_PPC_EMB_SDA2I16", /* name */
1331 FALSE, /* partial_inplace */
1333 0xffff, /* dst_mask */
1334 FALSE), /* pcrel_offset */
1336 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1337 small data items. */
1338 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1340 1, /* size (0 = byte, 1 = short, 2 = long) */
1342 FALSE, /* pc_relative */
1344 complain_overflow_signed, /* complain_on_overflow */
1345 bfd_elf_generic_reloc, /* special_function */
1346 "R_PPC_EMB_SDA2REL", /* name */
1347 FALSE, /* partial_inplace */
1349 0xffff, /* dst_mask */
1350 FALSE), /* pcrel_offset */
1352 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1353 signed offset from the appropriate base, and filling in the register
1354 field with the appropriate register (0, 2, or 13). */
1355 HOWTO (R_PPC_EMB_SDA21, /* type */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1359 FALSE, /* pc_relative */
1361 complain_overflow_signed, /* complain_on_overflow */
1362 bfd_elf_generic_reloc, /* special_function */
1363 "R_PPC_EMB_SDA21", /* name */
1364 FALSE, /* partial_inplace */
1366 0xffff, /* dst_mask */
1367 FALSE), /* pcrel_offset */
1369 /* Relocation not handled: R_PPC_EMB_MRKREF */
1370 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1371 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1372 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1373 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1374 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1376 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1377 in the 16 bit signed offset from the appropriate base, and filling in the
1378 register field with the appropriate register (0, 2, or 13). */
1379 HOWTO (R_PPC_EMB_RELSDA, /* type */
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 FALSE, /* pc_relative */
1385 complain_overflow_signed, /* complain_on_overflow */
1386 bfd_elf_generic_reloc, /* special_function */
1387 "R_PPC_EMB_RELSDA", /* name */
1388 FALSE, /* partial_inplace */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1393 HOWTO (R_PPC_IRELATIVE, /* type */
1395 2, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE, /* pc_relative */
1399 complain_overflow_bitfield, /* complain_on_overflow */
1400 bfd_elf_generic_reloc, /* special_function */
1401 "R_PPC_IRELATIVE", /* name */
1402 FALSE, /* partial_inplace */
1404 0xffffffff, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1407 /* A 16 bit relative relocation. */
1408 HOWTO (R_PPC_REL16, /* type */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 TRUE, /* pc_relative */
1414 complain_overflow_bitfield, /* complain_on_overflow */
1415 bfd_elf_generic_reloc, /* special_function */
1416 "R_PPC_REL16", /* name */
1417 FALSE, /* partial_inplace */
1419 0xffff, /* dst_mask */
1420 TRUE), /* pcrel_offset */
1422 /* A 16 bit relative relocation without overflow. */
1423 HOWTO (R_PPC_REL16_LO, /* type */
1425 1, /* size (0 = byte, 1 = short, 2 = long) */
1427 TRUE, /* pc_relative */
1429 complain_overflow_dont,/* complain_on_overflow */
1430 bfd_elf_generic_reloc, /* special_function */
1431 "R_PPC_REL16_LO", /* name */
1432 FALSE, /* partial_inplace */
1434 0xffff, /* dst_mask */
1435 TRUE), /* pcrel_offset */
1437 /* The high order 16 bits of a relative address. */
1438 HOWTO (R_PPC_REL16_HI, /* type */
1439 16, /* rightshift */
1440 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 TRUE, /* pc_relative */
1444 complain_overflow_dont, /* complain_on_overflow */
1445 bfd_elf_generic_reloc, /* special_function */
1446 "R_PPC_REL16_HI", /* name */
1447 FALSE, /* partial_inplace */
1449 0xffff, /* dst_mask */
1450 TRUE), /* pcrel_offset */
1452 /* The high order 16 bits of a relative address, plus 1 if the contents of
1453 the low 16 bits, treated as a signed number, is negative. */
1454 HOWTO (R_PPC_REL16_HA, /* type */
1455 16, /* rightshift */
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1458 TRUE, /* pc_relative */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 ppc_elf_addr16_ha_reloc, /* special_function */
1462 "R_PPC_REL16_HA", /* name */
1463 FALSE, /* partial_inplace */
1465 0xffff, /* dst_mask */
1466 TRUE), /* pcrel_offset */
1468 /* GNU extension to record C++ vtable hierarchy. */
1469 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1471 0, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE, /* pc_relative */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 NULL, /* special_function */
1477 "R_PPC_GNU_VTINHERIT", /* name */
1478 FALSE, /* partial_inplace */
1481 FALSE), /* pcrel_offset */
1483 /* GNU extension to record C++ vtable member usage. */
1484 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1486 0, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE, /* pc_relative */
1490 complain_overflow_dont, /* complain_on_overflow */
1491 NULL, /* special_function */
1492 "R_PPC_GNU_VTENTRY", /* name */
1493 FALSE, /* partial_inplace */
1496 FALSE), /* pcrel_offset */
1498 /* Phony reloc to handle AIX style TOC entries. */
1499 HOWTO (R_PPC_TOC16, /* type */
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE, /* pc_relative */
1505 complain_overflow_signed, /* complain_on_overflow */
1506 bfd_elf_generic_reloc, /* special_function */
1507 "R_PPC_TOC16", /* name */
1508 FALSE, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1514 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1517 ppc_elf_howto_init (void)
1519 unsigned int i, type;
1522 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1525 type = ppc_elf_howto_raw[i].type;
1526 if (type >= (sizeof (ppc_elf_howto_table)
1527 / sizeof (ppc_elf_howto_table[0])))
1529 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1533 static reloc_howto_type *
1534 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1535 bfd_reloc_code_real_type code)
1537 enum elf_ppc_reloc_type r;
1539 /* Initialize howto table if not already done. */
1540 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1541 ppc_elf_howto_init ();
1548 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1549 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1550 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1551 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1552 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1553 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1554 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1555 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1556 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1557 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1558 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1559 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1560 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1561 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1562 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1563 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1564 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1565 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1566 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1567 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1568 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1569 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1570 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1571 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1572 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1573 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1574 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1575 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1576 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1577 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1578 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1579 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1580 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1581 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1582 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1583 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1584 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1585 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1586 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1587 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1588 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1589 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1590 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1591 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1592 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1593 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1594 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1595 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1596 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1597 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1598 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1599 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1600 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1601 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1602 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1603 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1604 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1605 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1606 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1607 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1608 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1609 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1610 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1611 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1612 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1613 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1614 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1615 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1616 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1617 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1618 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1619 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1620 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1621 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1622 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1623 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1624 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1625 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1626 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1627 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1628 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1629 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1630 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1631 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1632 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1633 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1634 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1637 return ppc_elf_howto_table[r];
1640 static reloc_howto_type *
1641 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1647 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1649 if (ppc_elf_howto_raw[i].name != NULL
1650 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1651 return &ppc_elf_howto_raw[i];
1656 /* Set the howto pointer for a PowerPC ELF reloc. */
1659 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1661 Elf_Internal_Rela *dst)
1663 /* Initialize howto table if not already done. */
1664 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1665 ppc_elf_howto_init ();
1667 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1668 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1670 /* Just because the above assert didn't trigger doesn't mean that
1671 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1672 if (!cache_ptr->howto)
1674 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1675 abfd, ELF32_R_TYPE (dst->r_info));
1676 bfd_set_error (bfd_error_bad_value);
1678 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1682 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1684 static bfd_reloc_status_type
1685 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1686 arelent *reloc_entry,
1688 void *data ATTRIBUTE_UNUSED,
1689 asection *input_section,
1691 char **error_message ATTRIBUTE_UNUSED)
1695 if (output_bfd != NULL)
1697 reloc_entry->address += input_section->output_offset;
1698 return bfd_reloc_ok;
1701 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1702 return bfd_reloc_outofrange;
1704 if (bfd_is_com_section (symbol->section))
1707 relocation = symbol->value;
1709 relocation += symbol->section->output_section->vma;
1710 relocation += symbol->section->output_offset;
1711 relocation += reloc_entry->addend;
1712 if (reloc_entry->howto->pc_relative)
1713 relocation -= reloc_entry->address;
1715 reloc_entry->addend += (relocation & 0x8000) << 1;
1717 return bfd_reloc_continue;
1720 static bfd_reloc_status_type
1721 ppc_elf_unhandled_reloc (bfd *abfd,
1722 arelent *reloc_entry,
1725 asection *input_section,
1727 char **error_message)
1729 /* If this is a relocatable link (output_bfd test tells us), just
1730 call the generic function. Any adjustment will be done at final
1732 if (output_bfd != NULL)
1733 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1734 input_section, output_bfd, error_message);
1736 if (error_message != NULL)
1738 static char buf[60];
1739 sprintf (buf, _("generic linker can't handle %s"),
1740 reloc_entry->howto->name);
1741 *error_message = buf;
1743 return bfd_reloc_dangerous;
1746 /* Sections created by the linker. */
1748 typedef struct elf_linker_section
1750 /* Pointer to the bfd section. */
1754 /* Associated bss section name. */
1755 const char *bss_name;
1756 /* Associated symbol name. */
1757 const char *sym_name;
1758 /* Associated symbol. */
1759 struct elf_link_hash_entry *sym;
1760 } elf_linker_section_t;
1762 /* Linked list of allocated pointer entries. This hangs off of the
1763 symbol lists, and provides allows us to return different pointers,
1764 based on different addend's. */
1766 typedef struct elf_linker_section_pointers
1768 /* next allocated pointer for this symbol */
1769 struct elf_linker_section_pointers *next;
1770 /* offset of pointer from beginning of section */
1774 /* which linker section this is */
1775 elf_linker_section_t *lsect;
1776 } elf_linker_section_pointers_t;
1778 struct ppc_elf_obj_tdata
1780 struct elf_obj_tdata elf;
1782 /* A mapping from local symbols to offsets into the various linker
1783 sections added. This is index by the symbol index. */
1784 elf_linker_section_pointers_t **linker_section_pointers;
1786 /* Flags used to auto-detect plt type. */
1787 unsigned int makes_plt_call : 1;
1788 unsigned int has_rel16 : 1;
1791 #define ppc_elf_tdata(bfd) \
1792 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1794 #define elf_local_ptr_offsets(bfd) \
1795 (ppc_elf_tdata (bfd)->linker_section_pointers)
1797 #define is_ppc_elf(bfd) \
1798 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1799 && elf_object_id (bfd) == PPC32_ELF_DATA)
1801 /* Override the generic function because we store some extras. */
1804 ppc_elf_mkobject (bfd *abfd)
1806 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1810 /* Fix bad default arch selected for a 32 bit input bfd when the
1811 default is 64 bit. */
1814 ppc_elf_object_p (bfd *abfd)
1816 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1818 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1820 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1822 /* Relies on arch after 64 bit default being 32 bit default. */
1823 abfd->arch_info = abfd->arch_info->next;
1824 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1830 /* Function to set whether a module needs the -mrelocatable bit set. */
1833 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1835 BFD_ASSERT (!elf_flags_init (abfd)
1836 || elf_elfheader (abfd)->e_flags == flags);
1838 elf_elfheader (abfd)->e_flags = flags;
1839 elf_flags_init (abfd) = TRUE;
1843 /* Support for core dump NOTE sections. */
1846 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1851 switch (note->descsz)
1856 case 268: /* Linux/PPC. */
1858 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1861 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
1870 /* Make a ".reg/999" section. */
1871 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1872 size, note->descpos + offset);
1876 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1878 switch (note->descsz)
1883 case 128: /* Linux/PPC elf_prpsinfo. */
1884 elf_tdata (abfd)->core_program
1885 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1886 elf_tdata (abfd)->core_command
1887 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1890 /* Note that for some reason, a spurious space is tacked
1891 onto the end of the args in some (at least one anyway)
1892 implementations, so strip it off if it exists. */
1895 char *command = elf_tdata (abfd)->core_command;
1896 int n = strlen (command);
1898 if (0 < n && command[n - 1] == ' ')
1899 command[n - 1] = '\0';
1906 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1918 va_start (ap, note_type);
1919 memset (data, 0, 32);
1920 strncpy (data + 32, va_arg (ap, const char *), 16);
1921 strncpy (data + 48, va_arg (ap, const char *), 80);
1923 return elfcore_write_note (abfd, buf, bufsiz,
1924 "CORE", note_type, data, sizeof (data));
1935 va_start (ap, note_type);
1936 memset (data, 0, 72);
1937 pid = va_arg (ap, long);
1938 bfd_put_32 (abfd, pid, data + 24);
1939 cursig = va_arg (ap, int);
1940 bfd_put_16 (abfd, cursig, data + 12);
1941 greg = va_arg (ap, const void *);
1942 memcpy (data + 72, greg, 192);
1943 memset (data + 264, 0, 4);
1945 return elfcore_write_note (abfd, buf, bufsiz,
1946 "CORE", note_type, data, sizeof (data));
1951 /* Return address for Ith PLT stub in section PLT, for relocation REL
1952 or (bfd_vma) -1 if it should not be included. */
1955 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1956 const asection *plt ATTRIBUTE_UNUSED,
1959 return rel->address;
1962 /* Handle a PowerPC specific section when reading an object file. This
1963 is called when bfd_section_from_shdr finds a section with an unknown
1967 ppc_elf_section_from_shdr (bfd *abfd,
1968 Elf_Internal_Shdr *hdr,
1975 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1978 newsect = hdr->bfd_section;
1979 flags = bfd_get_section_flags (abfd, newsect);
1980 if (hdr->sh_flags & SHF_EXCLUDE)
1981 flags |= SEC_EXCLUDE;
1983 if (hdr->sh_type == SHT_ORDERED)
1984 flags |= SEC_SORT_ENTRIES;
1986 bfd_set_section_flags (abfd, newsect, flags);
1990 /* Set up any other section flags and such that may be necessary. */
1993 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1994 Elf_Internal_Shdr *shdr,
1997 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1998 shdr->sh_type = SHT_ORDERED;
2003 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2004 need to bump up the number of section headers. */
2007 ppc_elf_additional_program_headers (bfd *abfd,
2008 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2013 s = bfd_get_section_by_name (abfd, ".sbss2");
2014 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2017 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2018 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2024 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2025 .PPC.EMB.sbss0 a normal section, and not a bss section so
2026 that the linker doesn't crater when trying to make more than
2029 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2031 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2032 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2033 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2034 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2035 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2036 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2037 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2038 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2039 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2040 { NULL, 0, 0, 0, 0 }
2043 /* This is what we want for new plt/got. */
2044 static struct bfd_elf_special_section ppc_alt_plt =
2045 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2047 static const struct bfd_elf_special_section *
2048 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2050 const struct bfd_elf_special_section *ssect;
2052 /* See if this is one of the special sections. */
2053 if (sec->name == NULL)
2056 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2060 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2061 ssect = &ppc_alt_plt;
2065 return _bfd_elf_get_sec_type_attr (abfd, sec);
2068 /* Very simple linked list structure for recording apuinfo values. */
2069 typedef struct apuinfo_list
2071 struct apuinfo_list *next;
2072 unsigned long value;
2076 static apuinfo_list *head;
2077 static bfd_boolean apuinfo_set;
2080 apuinfo_list_init (void)
2083 apuinfo_set = FALSE;
2087 apuinfo_list_add (unsigned long value)
2089 apuinfo_list *entry = head;
2091 while (entry != NULL)
2093 if (entry->value == value)
2095 entry = entry->next;
2098 entry = bfd_malloc (sizeof (* entry));
2102 entry->value = value;
2108 apuinfo_list_length (void)
2110 apuinfo_list *entry;
2111 unsigned long count;
2113 for (entry = head, count = 0;
2115 entry = entry->next)
2121 static inline unsigned long
2122 apuinfo_list_element (unsigned long number)
2124 apuinfo_list * entry;
2128 entry = entry->next)
2131 return entry ? entry->value : 0;
2135 apuinfo_list_finish (void)
2137 apuinfo_list *entry;
2139 for (entry = head; entry;)
2141 apuinfo_list *next = entry->next;
2149 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2150 #define APUINFO_LABEL "APUinfo"
2152 /* Scan the input BFDs and create a linked list of
2153 the APUinfo values that will need to be emitted. */
2156 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2160 char *buffer = NULL;
2161 bfd_size_type largest_input_size = 0;
2163 unsigned long length;
2164 const char *error_message = NULL;
2166 if (link_info == NULL)
2169 apuinfo_list_init ();
2171 /* Read in the input sections contents. */
2172 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2174 unsigned long datum;
2176 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2180 error_message = _("corrupt %s section in %B");
2181 length = asec->size;
2186 if (largest_input_size < asec->size)
2190 largest_input_size = asec->size;
2191 buffer = bfd_malloc (largest_input_size);
2196 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2197 || (bfd_bread (buffer, length, ibfd) != length))
2199 error_message = _("unable to read in %s section from %B");
2203 /* Verify the contents of the header. Note - we have to
2204 extract the values this way in order to allow for a
2205 host whose endian-ness is different from the target. */
2206 datum = bfd_get_32 (ibfd, buffer);
2207 if (datum != sizeof APUINFO_LABEL)
2210 datum = bfd_get_32 (ibfd, buffer + 8);
2214 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2217 /* Get the number of bytes used for apuinfo entries. */
2218 datum = bfd_get_32 (ibfd, buffer + 4);
2219 if (datum + 20 != length)
2222 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2223 for (i = 0; i < datum; i += 4)
2224 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2227 error_message = NULL;
2231 /* Compute the size of the output section. */
2232 unsigned num_entries = apuinfo_list_length ();
2234 /* Set the output section size, if it exists. */
2235 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2237 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2240 error_message = _("warning: unable to set size of %s section in %B");
2249 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2252 /* Prevent the output section from accumulating the input sections'
2253 contents. We have already stored this in our linked list structure. */
2256 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2257 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2259 bfd_byte *contents ATTRIBUTE_UNUSED)
2261 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2264 /* Finally we can generate the output section. */
2267 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2272 unsigned num_entries;
2273 bfd_size_type length;
2275 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2282 length = asec->size;
2286 buffer = bfd_malloc (length);
2289 (*_bfd_error_handler)
2290 (_("failed to allocate space for new APUinfo section."));
2294 /* Create the apuinfo header. */
2295 num_entries = apuinfo_list_length ();
2296 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2297 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2298 bfd_put_32 (abfd, 0x2, buffer + 8);
2299 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2302 for (i = 0; i < num_entries; i++)
2304 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2308 if (length != asec->size)
2309 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2311 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2312 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2316 apuinfo_list_finish ();
2320 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2322 bfd_byte buf[GLINK_ENTRY_SIZE];
2324 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2327 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2328 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2329 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2330 && bfd_get_32 (abfd, buf + 12) == BCTR);
2334 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2336 bfd_vma vma = *(bfd_vma *) ptr;
2337 return ((section->flags & SEC_ALLOC) != 0
2338 && section->vma <= vma
2339 && vma < section->vma + section->size);
2343 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2344 long dynsymcount, asymbol **dynsyms,
2347 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2348 asection *plt, *relplt, *dynamic, *glink;
2349 bfd_vma glink_vma = 0;
2350 bfd_vma resolv_vma = 0;
2361 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2364 if (dynsymcount <= 0)
2367 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2371 plt = bfd_get_section_by_name (abfd, ".plt");
2375 /* Call common code to handle old-style executable PLTs. */
2376 if (elf_section_flags (plt) & SHF_EXECINSTR)
2377 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2378 dynsymcount, dynsyms, ret);
2380 /* If this object was prelinked, the prelinker stored the address
2381 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2382 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2383 if (dynamic != NULL)
2385 bfd_byte *dynbuf, *extdyn, *extdynend;
2387 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2389 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2392 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2393 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2396 extdynend = extdyn + dynamic->size;
2397 for (; extdyn < extdynend; extdyn += extdynsize)
2399 Elf_Internal_Dyn dyn;
2400 (*swap_dyn_in) (abfd, extdyn, &dyn);
2402 if (dyn.d_tag == DT_NULL)
2405 if (dyn.d_tag == DT_PPC_GOT)
2407 unsigned int g_o_t = dyn.d_un.d_val;
2408 asection *got = bfd_get_section_by_name (abfd, ".got");
2410 && bfd_get_section_contents (abfd, got, buf,
2411 g_o_t - got->vma + 4, 4))
2412 glink_vma = bfd_get_32 (abfd, buf);
2419 /* Otherwise we read the first plt entry. */
2422 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2423 glink_vma = bfd_get_32 (abfd, buf);
2429 /* The .glink section usually does not survive the final
2430 link; search for the section (usually .text) where the
2431 glink stubs now reside. */
2432 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2436 /* Determine glink PLT resolver by reading the relative branch
2437 from the first glink stub. */
2438 if (bfd_get_section_contents (abfd, glink, buf,
2439 glink_vma - glink->vma, 4))
2441 unsigned int insn = bfd_get_32 (abfd, buf);
2443 /* The first glink stub may either branch to the resolver ... */
2445 if ((insn & ~0x3fffffc) == 0)
2446 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2448 /* ... or fall through a bunch of NOPs. */
2449 else if ((insn ^ B ^ NOP) == 0)
2451 bfd_get_section_contents (abfd, glink, buf,
2452 glink_vma - glink->vma + i, 4);
2454 if (bfd_get_32 (abfd, buf) != NOP)
2456 resolv_vma = glink_vma + i;
2461 count = relplt->size / sizeof (Elf32_External_Rela);
2462 stub_vma = glink_vma - (bfd_vma) count * 16;
2463 /* If the stubs are those for -shared/-pie then we might have
2464 multiple stubs for each plt entry. If that is the case then
2465 there is no way to associate stubs with their plt entries short
2466 of figuring out the GOT pointer value used in the stub. */
2467 if (!is_nonpic_glink_stub (abfd, glink,
2468 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2471 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2472 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2475 size = count * sizeof (asymbol);
2476 p = relplt->relocation;
2477 for (i = 0; i < count; i++, p++)
2479 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2481 size += sizeof ("+0x") - 1 + 8;
2484 size += sizeof (asymbol) + sizeof ("__glink");
2487 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2489 s = *ret = bfd_malloc (size);
2493 names = (char *) (s + count + 1 + (resolv_vma != 0));
2494 p = relplt->relocation;
2495 for (i = 0; i < count; i++, p++)
2499 *s = **p->sym_ptr_ptr;
2500 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2501 we are defining a symbol, ensure one of them is set. */
2502 if ((s->flags & BSF_LOCAL) == 0)
2503 s->flags |= BSF_GLOBAL;
2504 s->flags |= BSF_SYNTHETIC;
2506 s->value = stub_vma - glink->vma;
2509 len = strlen ((*p->sym_ptr_ptr)->name);
2510 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2514 memcpy (names, "+0x", sizeof ("+0x") - 1);
2515 names += sizeof ("+0x") - 1;
2516 bfd_sprintf_vma (abfd, names, p->addend);
2517 names += strlen (names);
2519 memcpy (names, "@plt", sizeof ("@plt"));
2520 names += sizeof ("@plt");
2525 /* Add a symbol at the start of the glink branch table. */
2526 memset (s, 0, sizeof *s);
2528 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2530 s->value = glink_vma - glink->vma;
2532 memcpy (names, "__glink", sizeof ("__glink"));
2533 names += sizeof ("__glink");
2539 /* Add a symbol for the glink PLT resolver. */
2540 memset (s, 0, sizeof *s);
2542 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2544 s->value = resolv_vma - glink->vma;
2546 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2547 names += sizeof ("__glink_PLTresolve");
2555 /* The following functions are specific to the ELF linker, while
2556 functions above are used generally. They appear in this file more
2557 or less in the order in which they are called. eg.
2558 ppc_elf_check_relocs is called early in the link process,
2559 ppc_elf_finish_dynamic_sections is one of the last functions
2562 /* The PPC linker needs to keep track of the number of relocs that it
2563 decides to copy as dynamic relocs in check_relocs for each symbol.
2564 This is so that it can later discard them if they are found to be
2565 unnecessary. We store the information in a field extending the
2566 regular ELF linker hash table. */
2568 struct ppc_elf_dyn_relocs
2570 struct ppc_elf_dyn_relocs *next;
2572 /* The input section of the reloc. */
2575 /* Total number of relocs copied for the input section. */
2576 bfd_size_type count;
2578 /* Number of pc-relative relocs copied for the input section. */
2579 bfd_size_type pc_count;
2582 /* Track PLT entries needed for a given symbol. We might need more
2583 than one glink entry per symbol when generating a pic binary. */
2586 struct plt_entry *next;
2588 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2589 This field stores the offset into .got2 used to initialise the
2590 GOT pointer reg. It will always be at least 32768. (Current
2591 gcc always uses an offset of 32768, but ld -r will pack .got2
2592 sections together resulting in larger offsets). */
2595 /* The .got2 section. */
2598 /* PLT refcount or offset. */
2601 bfd_signed_vma refcount;
2605 /* .glink stub offset. */
2606 bfd_vma glink_offset;
2609 /* Of those relocs that might be copied as dynamic relocs, this function
2610 selects those that must be copied when linking a shared library,
2611 even when the symbol is local. */
2614 must_be_dyn_reloc (struct bfd_link_info *info,
2615 enum elf_ppc_reloc_type r_type)
2624 case R_PPC_REL14_BRTAKEN:
2625 case R_PPC_REL14_BRNTAKEN:
2631 case R_PPC_TPREL16_LO:
2632 case R_PPC_TPREL16_HI:
2633 case R_PPC_TPREL16_HA:
2634 return !info->executable;
2638 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2639 copying dynamic variables from a shared lib into an app's dynbss
2640 section, and instead use a dynamic relocation to point into the
2642 #define ELIMINATE_COPY_RELOCS 1
2644 /* PPC ELF linker hash entry. */
2646 struct ppc_elf_link_hash_entry
2648 struct elf_link_hash_entry elf;
2650 /* If this symbol is used in the linker created sections, the processor
2651 specific backend uses this field to map the field into the offset
2652 from the beginning of the section. */
2653 elf_linker_section_pointers_t *linker_section_pointer;
2655 /* Track dynamic relocs copied for this symbol. */
2656 struct ppc_elf_dyn_relocs *dyn_relocs;
2658 /* Contexts in which symbol is used in the GOT (or TOC).
2659 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2660 corresponding relocs are encountered during check_relocs.
2661 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2662 indicate the corresponding GOT entry type is not needed. */
2663 #define TLS_GD 1 /* GD reloc. */
2664 #define TLS_LD 2 /* LD reloc. */
2665 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2666 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2667 #define TLS_TLS 16 /* Any TLS reloc. */
2668 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2669 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
2672 /* Nonzero if we have seen a small data relocation referring to this
2674 unsigned char has_sda_refs;
2677 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2679 /* PPC ELF linker hash table. */
2681 struct ppc_elf_link_hash_table
2683 struct elf_link_hash_table elf;
2685 /* Short-cuts to get to dynamic linker sections. */
2697 elf_linker_section_t sdata[2];
2700 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2703 /* The .got.plt section (VxWorks only)*/
2706 /* Shortcut to __tls_get_addr. */
2707 struct elf_link_hash_entry *tls_get_addr;
2709 /* The bfd that forced an old-style PLT. */
2712 /* TLS local dynamic got entry handling. */
2714 bfd_signed_vma refcount;
2718 /* Offset of branch table to PltResolve function in glink. */
2719 bfd_vma glink_pltresolve;
2721 /* Size of reserved GOT entries. */
2722 unsigned int got_header_size;
2723 /* Non-zero if allocating the header left a gap. */
2724 unsigned int got_gap;
2726 /* The type of PLT we have chosen to use. */
2727 enum ppc_elf_plt_type plt_type;
2729 /* Set if we should emit symbols for stubs. */
2730 unsigned int emit_stub_syms:1;
2732 /* Set if __tls_get_addr optimization should not be done. */
2733 unsigned int no_tls_get_addr_opt:1;
2735 /* True if the target system is VxWorks. */
2736 unsigned int is_vxworks:1;
2738 /* The size of PLT entries. */
2740 /* The distance between adjacent PLT slots. */
2742 /* The size of the first PLT entry. */
2743 int plt_initial_entry_size;
2745 /* Small local sym cache. */
2746 struct sym_cache sym_cache;
2749 /* Rename some of the generic section flags to better document how they
2752 /* Nonzero if this section has TLS related relocations. */
2753 #define has_tls_reloc sec_flg0
2755 /* Nonzero if this section has a call to __tls_get_addr. */
2756 #define has_tls_get_addr_call sec_flg1
2758 /* Get the PPC ELF linker hash table from a link_info structure. */
2760 #define ppc_elf_hash_table(p) \
2761 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2762 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
2764 /* Create an entry in a PPC ELF linker hash table. */
2766 static struct bfd_hash_entry *
2767 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2768 struct bfd_hash_table *table,
2771 /* Allocate the structure if it has not already been allocated by a
2775 entry = bfd_hash_allocate (table,
2776 sizeof (struct ppc_elf_link_hash_entry));
2781 /* Call the allocation method of the superclass. */
2782 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2785 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2786 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2787 ppc_elf_hash_entry (entry)->tls_mask = 0;
2793 /* Create a PPC ELF linker hash table. */
2795 static struct bfd_link_hash_table *
2796 ppc_elf_link_hash_table_create (bfd *abfd)
2798 struct ppc_elf_link_hash_table *ret;
2800 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2804 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2805 ppc_elf_link_hash_newfunc,
2806 sizeof (struct ppc_elf_link_hash_entry),
2813 ret->elf.init_plt_refcount.refcount = 0;
2814 ret->elf.init_plt_refcount.glist = NULL;
2815 ret->elf.init_plt_offset.offset = 0;
2816 ret->elf.init_plt_offset.glist = NULL;
2818 ret->sdata[0].name = ".sdata";
2819 ret->sdata[0].sym_name = "_SDA_BASE_";
2820 ret->sdata[0].bss_name = ".sbss";
2822 ret->sdata[1].name = ".sdata2";
2823 ret->sdata[1].sym_name = "_SDA2_BASE_";
2824 ret->sdata[1].bss_name = ".sbss2";
2826 ret->plt_entry_size = 12;
2827 ret->plt_slot_size = 8;
2828 ret->plt_initial_entry_size = 72;
2830 return &ret->elf.root;
2833 /* Create .got and the related sections. */
2836 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2838 struct ppc_elf_link_hash_table *htab;
2842 if (!_bfd_elf_create_got_section (abfd, info))
2845 htab = ppc_elf_hash_table (info);
2846 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2850 if (htab->is_vxworks)
2852 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2858 /* The powerpc .got has a blrl instruction in it. Mark it
2860 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2861 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2862 if (!bfd_set_section_flags (abfd, s, flags))
2866 htab->relgot = bfd_get_section_by_name (abfd, ".rela.got");
2874 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
2876 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2880 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
2881 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2882 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
2885 || !bfd_set_section_alignment (abfd, s, 4))
2888 flags = SEC_ALLOC | SEC_LINKER_CREATED;
2889 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
2892 || !bfd_set_section_alignment (abfd, s, 4))
2895 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2896 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2897 s = bfd_make_section_with_flags (abfd, ".rela.iplt", flags);
2900 || ! bfd_set_section_alignment (abfd, s, 2))
2905 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2906 to output sections (just like _bfd_elf_create_dynamic_sections has
2907 to create .dynbss and .rela.bss). */
2910 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2912 struct ppc_elf_link_hash_table *htab;
2916 htab = ppc_elf_hash_table (info);
2918 if (htab->got == NULL
2919 && !ppc_elf_create_got (abfd, info))
2922 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2925 if (htab->glink == NULL
2926 && !ppc_elf_create_glink (abfd, info))
2929 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2930 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2931 SEC_ALLOC | SEC_LINKER_CREATED);
2938 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2939 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2940 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2941 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2944 || ! bfd_set_section_alignment (abfd, s, 2))
2948 if (htab->is_vxworks
2949 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2952 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2953 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2957 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2958 if (htab->plt_type == PLT_VXWORKS)
2959 /* The VxWorks PLT is a loaded section with contents. */
2960 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2961 return bfd_set_section_flags (abfd, s, flags);
2964 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2967 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2968 struct elf_link_hash_entry *dir,
2969 struct elf_link_hash_entry *ind)
2971 struct ppc_elf_link_hash_entry *edir, *eind;
2973 edir = (struct ppc_elf_link_hash_entry *) dir;
2974 eind = (struct ppc_elf_link_hash_entry *) ind;
2976 if (eind->dyn_relocs != NULL)
2978 if (edir->dyn_relocs != NULL)
2980 struct ppc_elf_dyn_relocs **pp;
2981 struct ppc_elf_dyn_relocs *p;
2983 /* Add reloc counts against the indirect sym to the direct sym
2984 list. Merge any entries against the same section. */
2985 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2987 struct ppc_elf_dyn_relocs *q;
2989 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2990 if (q->sec == p->sec)
2992 q->pc_count += p->pc_count;
2993 q->count += p->count;
3000 *pp = edir->dyn_relocs;
3003 edir->dyn_relocs = eind->dyn_relocs;
3004 eind->dyn_relocs = NULL;
3007 edir->tls_mask |= eind->tls_mask;
3008 edir->has_sda_refs |= eind->has_sda_refs;
3010 /* If called to transfer flags for a weakdef during processing
3011 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3012 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3013 if (!(ELIMINATE_COPY_RELOCS
3014 && eind->elf.root.type != bfd_link_hash_indirect
3015 && edir->elf.dynamic_adjusted))
3016 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3018 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3019 edir->elf.ref_regular |= eind->elf.ref_regular;
3020 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3021 edir->elf.needs_plt |= eind->elf.needs_plt;
3022 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3024 /* If we were called to copy over info for a weak sym, that's all. */
3025 if (eind->elf.root.type != bfd_link_hash_indirect)
3028 /* Copy over the GOT refcount entries that we may have already seen to
3029 the symbol which just became indirect. */
3030 edir->elf.got.refcount += eind->elf.got.refcount;
3031 eind->elf.got.refcount = 0;
3033 /* And plt entries. */
3034 if (eind->elf.plt.plist != NULL)
3036 if (edir->elf.plt.plist != NULL)
3038 struct plt_entry **entp;
3039 struct plt_entry *ent;
3041 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3043 struct plt_entry *dent;
3045 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3046 if (dent->sec == ent->sec && dent->addend == ent->addend)
3048 dent->plt.refcount += ent->plt.refcount;
3055 *entp = edir->elf.plt.plist;
3058 edir->elf.plt.plist = eind->elf.plt.plist;
3059 eind->elf.plt.plist = NULL;
3062 if (eind->elf.dynindx != -1)
3064 if (edir->elf.dynindx != -1)
3065 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3066 edir->elf.dynstr_index);
3067 edir->elf.dynindx = eind->elf.dynindx;
3068 edir->elf.dynstr_index = eind->elf.dynstr_index;
3069 eind->elf.dynindx = -1;
3070 eind->elf.dynstr_index = 0;
3074 /* Hook called by the linker routine which adds symbols from an object
3075 file. We use it to put .comm items in .sbss, and not .bss. */
3078 ppc_elf_add_symbol_hook (bfd *abfd,
3079 struct bfd_link_info *info,
3080 Elf_Internal_Sym *sym,
3081 const char **namep ATTRIBUTE_UNUSED,
3082 flagword *flagsp ATTRIBUTE_UNUSED,
3086 if (sym->st_shndx == SHN_COMMON
3087 && !info->relocatable
3088 && is_ppc_elf (info->output_bfd)
3089 && sym->st_size <= elf_gp_size (abfd))
3091 /* Common symbols less than or equal to -G nn bytes are automatically
3093 struct ppc_elf_link_hash_table *htab;
3095 htab = ppc_elf_hash_table (info);
3096 if (htab->sbss == NULL)
3098 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3100 if (!htab->elf.dynobj)
3101 htab->elf.dynobj = abfd;
3103 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3106 if (htab->sbss == NULL)
3111 *valp = sym->st_size;
3114 if ((abfd->flags & DYNAMIC) == 0
3115 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3116 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
3122 create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3124 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3126 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3128 if (lsect->sym == NULL)
3130 if (lsect->sym->root.type == bfd_link_hash_new)
3131 lsect->sym->non_elf = 0;
3132 lsect->sym->ref_regular = 1;
3133 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3137 /* Create a special linker section. */
3140 ppc_elf_create_linker_section (bfd *abfd,
3141 struct bfd_link_info *info,
3143 elf_linker_section_t *lsect)
3145 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3148 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3149 | SEC_LINKER_CREATED);
3151 /* Record the first bfd that needs the special sections. */
3152 if (!htab->elf.dynobj)
3153 htab->elf.dynobj = abfd;
3155 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3159 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3163 return create_sdata_sym (info, lsect);
3166 /* Find a linker generated pointer with a given addend and type. */
3168 static elf_linker_section_pointers_t *
3169 elf_find_pointer_linker_section
3170 (elf_linker_section_pointers_t *linker_pointers,
3172 elf_linker_section_t *lsect)
3174 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3175 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3176 return linker_pointers;
3181 /* Allocate a pointer to live in a linker created section. */
3184 elf_create_pointer_linker_section (bfd *abfd,
3185 elf_linker_section_t *lsect,
3186 struct elf_link_hash_entry *h,
3187 const Elf_Internal_Rela *rel)
3189 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3190 elf_linker_section_pointers_t *linker_section_ptr;
3191 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3194 BFD_ASSERT (lsect != NULL);
3196 /* Is this a global symbol? */
3199 struct ppc_elf_link_hash_entry *eh;
3201 /* Has this symbol already been allocated? If so, our work is done. */
3202 eh = (struct ppc_elf_link_hash_entry *) h;
3203 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3208 ptr_linker_section_ptr = &eh->linker_section_pointer;
3212 BFD_ASSERT (is_ppc_elf (abfd));
3214 /* Allocation of a pointer to a local symbol. */
3215 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3217 /* Allocate a table to hold the local symbols if first time. */
3220 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3223 amt *= sizeof (elf_linker_section_pointers_t *);
3224 ptr = bfd_zalloc (abfd, amt);
3229 elf_local_ptr_offsets (abfd) = ptr;
3232 /* Has this symbol already been allocated? If so, our work is done. */
3233 if (elf_find_pointer_linker_section (ptr[r_symndx],
3238 ptr_linker_section_ptr = &ptr[r_symndx];
3241 /* Allocate space for a pointer in the linker section, and allocate
3242 a new pointer record from internal memory. */
3243 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3244 amt = sizeof (elf_linker_section_pointers_t);
3245 linker_section_ptr = bfd_alloc (abfd, amt);
3247 if (!linker_section_ptr)
3250 linker_section_ptr->next = *ptr_linker_section_ptr;
3251 linker_section_ptr->addend = rel->r_addend;
3252 linker_section_ptr->lsect = lsect;
3253 *ptr_linker_section_ptr = linker_section_ptr;
3255 linker_section_ptr->offset = lsect->section->size;
3256 lsect->section->size += 4;
3260 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3261 lsect->name, (long) linker_section_ptr->offset,
3262 (long) lsect->section->size);
3268 static struct plt_entry **
3269 update_local_sym_info (bfd *abfd,
3270 Elf_Internal_Shdr *symtab_hdr,
3271 unsigned long r_symndx,
3274 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3275 struct plt_entry **local_plt;
3276 char *local_got_tls_masks;
3278 if (local_got_refcounts == NULL)
3280 bfd_size_type size = symtab_hdr->sh_info;
3282 size *= (sizeof (*local_got_refcounts)
3283 + sizeof (*local_plt)
3284 + sizeof (*local_got_tls_masks));
3285 local_got_refcounts = bfd_zalloc (abfd, size);
3286 if (local_got_refcounts == NULL)
3288 elf_local_got_refcounts (abfd) = local_got_refcounts;
3291 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3292 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3293 local_got_tls_masks[r_symndx] |= tls_type;
3294 if (tls_type != PLT_IFUNC)
3295 local_got_refcounts[r_symndx] += 1;
3296 return local_plt + r_symndx;
3300 update_plt_info (bfd *abfd, struct plt_entry **plist,
3301 asection *sec, bfd_vma addend)
3303 struct plt_entry *ent;
3307 for (ent = *plist; ent != NULL; ent = ent->next)
3308 if (ent->sec == sec && ent->addend == addend)
3312 bfd_size_type amt = sizeof (*ent);
3313 ent = bfd_alloc (abfd, amt);
3318 ent->addend = addend;
3319 ent->plt.refcount = 0;
3322 ent->plt.refcount += 1;
3326 static struct plt_entry *
3327 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3329 struct plt_entry *ent;
3333 for (ent = *plist; ent != NULL; ent = ent->next)
3334 if (ent->sec == sec && ent->addend == addend)
3340 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3342 return (r_type == R_PPC_PLTREL24
3343 || r_type == R_PPC_LOCAL24PC
3344 || r_type == R_PPC_REL24
3345 || r_type == R_PPC_REL14
3346 || r_type == R_PPC_REL14_BRTAKEN
3347 || r_type == R_PPC_REL14_BRNTAKEN
3348 || r_type == R_PPC_ADDR24
3349 || r_type == R_PPC_ADDR14
3350 || r_type == R_PPC_ADDR14_BRTAKEN
3351 || r_type == R_PPC_ADDR14_BRNTAKEN);
3355 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3357 (*_bfd_error_handler)
3358 (_("%B: relocation %s cannot be used when making a shared object"),
3360 ppc_elf_howto_table[r_type]->name);
3361 bfd_set_error (bfd_error_bad_value);
3364 /* Look through the relocs for a section during the first phase, and
3365 allocate space in the global offset table or procedure linkage
3369 ppc_elf_check_relocs (bfd *abfd,
3370 struct bfd_link_info *info,
3372 const Elf_Internal_Rela *relocs)
3374 struct ppc_elf_link_hash_table *htab;
3375 Elf_Internal_Shdr *symtab_hdr;
3376 struct elf_link_hash_entry **sym_hashes;
3377 const Elf_Internal_Rela *rel;
3378 const Elf_Internal_Rela *rel_end;
3379 asection *got2, *sreloc;
3380 struct elf_link_hash_entry *tga;
3382 if (info->relocatable)
3385 /* Don't do anything special with non-loaded, non-alloced sections.
3386 In particular, any relocs in such sections should not affect GOT
3387 and PLT reference counting (ie. we don't allow them to create GOT
3388 or PLT entries), there's no possibility or desire to optimize TLS
3389 relocs, and there's not much point in propagating relocs to shared
3390 libs that the dynamic linker won't relocate. */
3391 if ((sec->flags & SEC_ALLOC) == 0)
3395 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3399 BFD_ASSERT (is_ppc_elf (abfd));
3401 /* Initialize howto table if not already done. */
3402 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3403 ppc_elf_howto_init ();
3405 htab = ppc_elf_hash_table (info);
3406 if (htab->glink == NULL)
3408 if (htab->elf.dynobj == NULL)
3409 htab->elf.dynobj = abfd;
3410 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3413 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3414 FALSE, FALSE, TRUE);
3415 symtab_hdr = &elf_symtab_hdr (abfd);
3416 sym_hashes = elf_sym_hashes (abfd);
3417 got2 = bfd_get_section_by_name (abfd, ".got2");
3420 rel_end = relocs + sec->reloc_count;
3421 for (rel = relocs; rel < rel_end; rel++)
3423 unsigned long r_symndx;
3424 enum elf_ppc_reloc_type r_type;
3425 struct elf_link_hash_entry *h;
3428 r_symndx = ELF32_R_SYM (rel->r_info);
3429 if (r_symndx < symtab_hdr->sh_info)
3433 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3434 while (h->root.type == bfd_link_hash_indirect
3435 || h->root.type == bfd_link_hash_warning)
3436 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3439 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3440 This shows up in particular in an R_PPC_ADDR32 in the eabi
3443 && htab->got == NULL
3444 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3446 if (htab->elf.dynobj == NULL)
3447 htab->elf.dynobj = abfd;
3448 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3450 BFD_ASSERT (h == htab->elf.hgot);
3454 r_type = ELF32_R_TYPE (rel->r_info);
3455 if (h == NULL && !htab->is_vxworks)
3457 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3462 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3464 || is_branch_reloc (r_type)))
3466 struct plt_entry **ifunc;
3469 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3474 /* STT_GNU_IFUNC symbols must have a PLT entry;
3475 In a non-pie executable even when there are
3478 if (r_type == R_PPC_PLTREL24)
3480 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3482 addend = rel->r_addend;
3484 if (!update_plt_info (abfd, ifunc, got2, addend))
3489 if (!htab->is_vxworks
3490 && is_branch_reloc (r_type)
3495 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3496 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3497 /* We have a new-style __tls_get_addr call with a marker
3501 /* Mark this section as having an old-style call. */
3502 sec->has_tls_get_addr_call = 1;
3509 /* These special tls relocs tie a call to __tls_get_addr with
3510 its parameter symbol. */
3513 case R_PPC_GOT_TLSLD16:
3514 case R_PPC_GOT_TLSLD16_LO:
3515 case R_PPC_GOT_TLSLD16_HI:
3516 case R_PPC_GOT_TLSLD16_HA:
3517 tls_type = TLS_TLS | TLS_LD;
3520 case R_PPC_GOT_TLSGD16:
3521 case R_PPC_GOT_TLSGD16_LO:
3522 case R_PPC_GOT_TLSGD16_HI:
3523 case R_PPC_GOT_TLSGD16_HA:
3524 tls_type = TLS_TLS | TLS_GD;
3527 case R_PPC_GOT_TPREL16:
3528 case R_PPC_GOT_TPREL16_LO:
3529 case R_PPC_GOT_TPREL16_HI:
3530 case R_PPC_GOT_TPREL16_HA:
3531 if (!info->executable)
3532 info->flags |= DF_STATIC_TLS;
3533 tls_type = TLS_TLS | TLS_TPREL;
3536 case R_PPC_GOT_DTPREL16:
3537 case R_PPC_GOT_DTPREL16_LO:
3538 case R_PPC_GOT_DTPREL16_HI:
3539 case R_PPC_GOT_DTPREL16_HA:
3540 tls_type = TLS_TLS | TLS_DTPREL;
3542 sec->has_tls_reloc = 1;
3545 /* GOT16 relocations */
3547 case R_PPC_GOT16_LO:
3548 case R_PPC_GOT16_HI:
3549 case R_PPC_GOT16_HA:
3550 /* This symbol requires a global offset table entry. */
3551 if (htab->got == NULL)
3553 if (htab->elf.dynobj == NULL)
3554 htab->elf.dynobj = abfd;
3555 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3560 h->got.refcount += 1;
3561 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3564 /* This is a global offset table entry for a local symbol. */
3565 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3568 /* We may also need a plt entry if the symbol turns out to be
3570 if (h != NULL && !info->shared)
3572 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3577 /* Indirect .sdata relocation. */
3578 case R_PPC_EMB_SDAI16:
3581 bad_shared_reloc (abfd, r_type);
3584 if (htab->sdata[0].section == NULL
3585 && !ppc_elf_create_linker_section (abfd, info, 0,
3588 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3593 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3594 h->non_got_ref = TRUE;
3598 /* Indirect .sdata2 relocation. */
3599 case R_PPC_EMB_SDA2I16:
3602 bad_shared_reloc (abfd, r_type);
3605 if (htab->sdata[1].section == NULL
3606 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3609 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3614 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3615 h->non_got_ref = TRUE;
3619 case R_PPC_SDAREL16:
3620 if (htab->sdata[0].sym == NULL
3621 && !create_sdata_sym (info, &htab->sdata[0]))
3625 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3626 h->non_got_ref = TRUE;
3630 case R_PPC_EMB_SDA2REL:
3633 bad_shared_reloc (abfd, r_type);
3636 if (htab->sdata[1].sym == NULL
3637 && !create_sdata_sym (info, &htab->sdata[1]))
3641 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3642 h->non_got_ref = TRUE;
3646 case R_PPC_EMB_SDA21:
3647 case R_PPC_EMB_RELSDA:
3650 bad_shared_reloc (abfd, r_type);
3653 if (htab->sdata[0].sym == NULL
3654 && !create_sdata_sym (info, &htab->sdata[0]))
3656 if (htab->sdata[1].sym == NULL
3657 && !create_sdata_sym (info, &htab->sdata[1]))
3661 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3662 h->non_got_ref = TRUE;
3666 case R_PPC_EMB_NADDR32:
3667 case R_PPC_EMB_NADDR16:
3668 case R_PPC_EMB_NADDR16_LO:
3669 case R_PPC_EMB_NADDR16_HI:
3670 case R_PPC_EMB_NADDR16_HA:
3673 bad_shared_reloc (abfd, r_type);
3677 h->non_got_ref = TRUE;
3680 case R_PPC_PLTREL24:
3685 case R_PPC_PLTREL32:
3686 case R_PPC_PLT16_LO:
3687 case R_PPC_PLT16_HI:
3688 case R_PPC_PLT16_HA:
3690 fprintf (stderr, "Reloc requires a PLT entry\n");
3692 /* This symbol requires a procedure linkage table entry. We
3693 actually build the entry in finish_dynamic_symbol,
3694 because this might be a case of linking PIC code without
3695 linking in any dynamic objects, in which case we don't
3696 need to generate a procedure linkage table after all. */
3700 /* It does not make sense to have a procedure linkage
3701 table entry for a local symbol. */
3702 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3706 (long) rel->r_offset,
3707 ppc_elf_howto_table[r_type]->name);
3708 bfd_set_error (bfd_error_bad_value);
3715 if (r_type == R_PPC_PLTREL24)
3717 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3719 addend = rel->r_addend;
3722 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
3727 /* The following relocations don't need to propagate the
3728 relocation if linking a shared object since they are
3729 section relative. */
3731 case R_PPC_SECTOFF_LO:
3732 case R_PPC_SECTOFF_HI:
3733 case R_PPC_SECTOFF_HA:
3734 case R_PPC_DTPREL16:
3735 case R_PPC_DTPREL16_LO:
3736 case R_PPC_DTPREL16_HI:
3737 case R_PPC_DTPREL16_HA:
3742 case R_PPC_REL16_LO:
3743 case R_PPC_REL16_HI:
3744 case R_PPC_REL16_HA:
3745 ppc_elf_tdata (abfd)->has_rel16 = 1;
3748 /* These are just markers. */
3750 case R_PPC_EMB_MRKREF:
3754 case R_PPC_RELAX_PLT:
3755 case R_PPC_RELAX_PLTREL24:
3758 /* These should only appear in dynamic objects. */
3760 case R_PPC_GLOB_DAT:
3761 case R_PPC_JMP_SLOT:
3762 case R_PPC_RELATIVE:
3763 case R_PPC_IRELATIVE:
3766 /* These aren't handled yet. We'll report an error later. */
3768 case R_PPC_EMB_RELSEC16:
3769 case R_PPC_EMB_RELST_LO:
3770 case R_PPC_EMB_RELST_HI:
3771 case R_PPC_EMB_RELST_HA:
3772 case R_PPC_EMB_BIT_FLD:
3775 /* This refers only to functions defined in the shared library. */
3776 case R_PPC_LOCAL24PC:
3777 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3779 htab->plt_type = PLT_OLD;
3780 htab->old_bfd = abfd;
3784 /* This relocation describes the C++ object vtable hierarchy.
3785 Reconstruct it for later use during GC. */
3786 case R_PPC_GNU_VTINHERIT:
3787 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3791 /* This relocation describes which C++ vtable entries are actually
3792 used. Record for later use during GC. */
3793 case R_PPC_GNU_VTENTRY:
3794 BFD_ASSERT (h != NULL);
3796 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3800 /* We shouldn't really be seeing these. */
3803 case R_PPC_TPREL16_LO:
3804 case R_PPC_TPREL16_HI:
3805 case R_PPC_TPREL16_HA:
3806 if (!info->executable)
3807 info->flags |= DF_STATIC_TLS;
3811 case R_PPC_DTPMOD32:
3812 case R_PPC_DTPREL32:
3818 && (sec->flags & SEC_CODE) != 0
3820 && htab->plt_type == PLT_UNSET)
3822 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3823 the start of a function, which assembles to a REL32
3824 reference to .got2. If we detect one of these, then
3825 force the old PLT layout because the linker cannot
3826 reliably deduce the GOT pointer value needed for
3829 Elf_Internal_Sym *isym;
3831 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3836 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3839 htab->plt_type = PLT_OLD;
3840 htab->old_bfd = abfd;
3843 if (h == NULL || h == htab->elf.hgot)
3849 case R_PPC_ADDR16_LO:
3850 case R_PPC_ADDR16_HI:
3851 case R_PPC_ADDR16_HA:
3854 if (h != NULL && !info->shared)
3856 /* We may need a plt entry if the symbol turns out to be
3857 a function defined in a dynamic object. */
3858 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3861 /* We may need a copy reloc too. */
3863 h->pointer_equality_needed = 1;
3869 case R_PPC_REL14_BRTAKEN:
3870 case R_PPC_REL14_BRNTAKEN:
3873 if (h == htab->elf.hgot)
3875 if (htab->plt_type == PLT_UNSET)
3877 htab->plt_type = PLT_OLD;
3878 htab->old_bfd = abfd;
3886 case R_PPC_ADDR14_BRTAKEN:
3887 case R_PPC_ADDR14_BRNTAKEN:
3888 if (h != NULL && !info->shared)
3890 /* We may need a plt entry if the symbol turns out to be
3891 a function defined in a dynamic object. */
3893 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3899 /* If we are creating a shared library, and this is a reloc
3900 against a global symbol, or a non PC relative reloc
3901 against a local symbol, then we need to copy the reloc
3902 into the shared library. However, if we are linking with
3903 -Bsymbolic, we do not need to copy a reloc against a
3904 global symbol which is defined in an object we are
3905 including in the link (i.e., DEF_REGULAR is set). At
3906 this point we have not seen all the input files, so it is
3907 possible that DEF_REGULAR is not set now but will be set
3908 later (it is never cleared). In case of a weak definition,
3909 DEF_REGULAR may be cleared later by a strong definition in
3910 a shared library. We account for that possibility below by
3911 storing information in the dyn_relocs field of the hash
3912 table entry. A similar situation occurs when creating
3913 shared libraries and symbol visibility changes render the
3916 If on the other hand, we are creating an executable, we
3917 may need to keep relocations for symbols satisfied by a
3918 dynamic library if we manage to avoid copy relocs for the
3921 && (must_be_dyn_reloc (info, r_type)
3923 && (! info->symbolic
3924 || h->root.type == bfd_link_hash_defweak
3925 || !h->def_regular))))
3926 || (ELIMINATE_COPY_RELOCS
3929 && (h->root.type == bfd_link_hash_defweak
3930 || !h->def_regular)))
3932 struct ppc_elf_dyn_relocs *p;
3933 struct ppc_elf_dyn_relocs **rel_head;
3937 "ppc_elf_check_relocs needs to "
3938 "create relocation for %s\n",
3939 (h && h->root.root.string
3940 ? h->root.root.string : "<unknown>"));
3944 if (htab->elf.dynobj == NULL)
3945 htab->elf.dynobj = abfd;
3947 sreloc = _bfd_elf_make_dynamic_reloc_section
3948 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3954 /* If this is a global symbol, we count the number of
3955 relocations we need for this symbol. */
3958 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
3962 /* Track dynamic relocs needed for local syms too.
3963 We really need local syms available to do this
3967 Elf_Internal_Sym *isym;
3969 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3974 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3978 vpp = &elf_section_data (s)->local_dynrel;
3979 rel_head = (struct ppc_elf_dyn_relocs **) vpp;
3983 if (p == NULL || p->sec != sec)
3985 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3988 p->next = *rel_head;
3996 if (!must_be_dyn_reloc (info, r_type))
4008 /* Merge object attributes from IBFD into OBFD. Raise an error if
4009 there are conflicting attributes. */
4011 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4013 obj_attribute *in_attr, *in_attrs;
4014 obj_attribute *out_attr, *out_attrs;
4016 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4018 /* This is the first object. Copy the attributes. */
4019 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4021 /* Use the Tag_null value to indicate the attributes have been
4023 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4028 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4029 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4031 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4032 non-conflicting ones. */
4033 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4034 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4035 if (in_attr->i != out_attr->i)
4038 if (out_attr->i == 0)
4039 out_attr->i = in_attr->i;
4040 else if (in_attr->i == 0)
4042 else if (out_attr->i == 1 && in_attr->i == 2)
4044 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4045 else if (out_attr->i == 1 && in_attr->i == 3)
4047 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4049 else if (out_attr->i == 3 && in_attr->i == 1)
4051 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4053 else if (out_attr->i == 3 && in_attr->i == 2)
4055 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4057 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4059 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4060 else if (in_attr->i > 3)
4062 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4066 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4070 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4071 merge non-conflicting ones. */
4072 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4073 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4074 if (in_attr->i != out_attr->i)
4076 const char *in_abi = NULL, *out_abi = NULL;
4080 case 1: in_abi = "generic"; break;
4081 case 2: in_abi = "AltiVec"; break;
4082 case 3: in_abi = "SPE"; break;
4085 switch (out_attr->i)
4087 case 1: out_abi = "generic"; break;
4088 case 2: out_abi = "AltiVec"; break;
4089 case 3: out_abi = "SPE"; break;
4093 if (out_attr->i == 0)
4094 out_attr->i = in_attr->i;
4095 else if (in_attr->i == 0)
4097 /* For now, allow generic to transition to AltiVec or SPE
4098 without a warning. If GCC marked files with their stack
4099 alignment and used don't-care markings for files which are
4100 not affected by the vector ABI, we could warn about this
4102 else if (out_attr->i == 1)
4103 out_attr->i = in_attr->i;
4104 else if (in_attr->i == 1)
4106 else if (in_abi == NULL)
4108 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4110 else if (out_abi == NULL)
4112 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4116 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4117 ibfd, obfd, in_abi, out_abi);
4120 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4121 and merge non-conflicting ones. */
4122 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4123 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4124 if (in_attr->i != out_attr->i)
4127 if (out_attr->i == 0)
4128 out_attr->i = in_attr->i;
4129 else if (in_attr->i == 0)
4131 else if (out_attr->i == 1 && in_attr->i == 2)
4133 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4134 else if (out_attr->i == 2 && in_attr->i == 1)
4136 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4137 else if (in_attr->i > 2)
4139 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4143 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4147 /* Merge Tag_compatibility attributes and any common GNU ones. */
4148 _bfd_elf_merge_object_attributes (ibfd, obfd);
4153 /* Merge backend specific data from an object file to the output
4154 object file when linking. */
4157 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4163 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4166 /* Check if we have the same endianess. */
4167 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4170 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4173 new_flags = elf_elfheader (ibfd)->e_flags;
4174 old_flags = elf_elfheader (obfd)->e_flags;
4175 if (!elf_flags_init (obfd))
4177 /* First call, no flags set. */
4178 elf_flags_init (obfd) = TRUE;
4179 elf_elfheader (obfd)->e_flags = new_flags;
4182 /* Compatible flags are ok. */
4183 else if (new_flags == old_flags)
4186 /* Incompatible flags. */
4189 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4190 to be linked with either. */
4192 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4193 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4196 (*_bfd_error_handler)
4197 (_("%B: compiled with -mrelocatable and linked with "
4198 "modules compiled normally"), ibfd);
4200 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4201 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4204 (*_bfd_error_handler)
4205 (_("%B: compiled normally and linked with "
4206 "modules compiled with -mrelocatable"), ibfd);
4209 /* The output is -mrelocatable-lib iff both the input files are. */
4210 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4211 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4213 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4214 but each input file is either -mrelocatable or -mrelocatable-lib. */
4215 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4216 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4217 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4218 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4220 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4221 any module uses it. */
4222 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4224 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4225 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4227 /* Warn about any other mismatches. */
4228 if (new_flags != old_flags)
4231 (*_bfd_error_handler)
4232 (_("%B: uses different e_flags (0x%lx) fields "
4233 "than previous modules (0x%lx)"),
4234 ibfd, (long) new_flags, (long) old_flags);
4239 bfd_set_error (bfd_error_bad_value);
4247 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4248 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4250 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4251 struct bfd_link_info *info,
4252 enum ppc_elf_plt_type plt_style,
4255 struct ppc_elf_link_hash_table *htab;
4258 htab = ppc_elf_hash_table (info);
4260 htab->emit_stub_syms = emit_stub_syms;
4262 if (htab->plt_type == PLT_UNSET)
4264 if (plt_style == PLT_OLD)
4265 htab->plt_type = PLT_OLD;
4269 enum ppc_elf_plt_type plt_type = plt_style;
4271 /* Look through the reloc flags left by ppc_elf_check_relocs.
4272 Use the old style bss plt if a file makes plt calls
4273 without using the new relocs, and if ld isn't given
4274 --secure-plt and we never see REL16 relocs. */
4275 if (plt_type == PLT_UNSET)
4277 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4278 if (is_ppc_elf (ibfd))
4280 if (ppc_elf_tdata (ibfd)->has_rel16)
4282 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4285 htab->old_bfd = ibfd;
4289 htab->plt_type = plt_type;
4292 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4293 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
4295 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4297 if (htab->plt_type == PLT_NEW)
4299 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4300 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4302 /* The new PLT is a loaded section. */
4303 if (htab->plt != NULL
4304 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4307 /* The new GOT is not executable. */
4308 if (htab->got != NULL
4309 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4314 /* Stop an unused .glink section from affecting .text alignment. */
4315 if (htab->glink != NULL
4316 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4319 return htab->plt_type == PLT_NEW;
4322 /* Return the section that should be marked against GC for a given
4326 ppc_elf_gc_mark_hook (asection *sec,
4327 struct bfd_link_info *info,
4328 Elf_Internal_Rela *rel,
4329 struct elf_link_hash_entry *h,
4330 Elf_Internal_Sym *sym)
4333 switch (ELF32_R_TYPE (rel->r_info))
4335 case R_PPC_GNU_VTINHERIT:
4336 case R_PPC_GNU_VTENTRY:
4340 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4343 /* Update the got, plt and dynamic reloc reference counts for the
4344 section being removed. */
4347 ppc_elf_gc_sweep_hook (bfd *abfd,
4348 struct bfd_link_info *info,
4350 const Elf_Internal_Rela *relocs)
4352 struct ppc_elf_link_hash_table *htab;
4353 Elf_Internal_Shdr *symtab_hdr;
4354 struct elf_link_hash_entry **sym_hashes;
4355 bfd_signed_vma *local_got_refcounts;
4356 const Elf_Internal_Rela *rel, *relend;
4359 if (info->relocatable)
4362 if ((sec->flags & SEC_ALLOC) == 0)
4365 elf_section_data (sec)->local_dynrel = NULL;
4367 htab = ppc_elf_hash_table (info);
4368 symtab_hdr = &elf_symtab_hdr (abfd);
4369 sym_hashes = elf_sym_hashes (abfd);
4370 local_got_refcounts = elf_local_got_refcounts (abfd);
4371 got2 = bfd_get_section_by_name (abfd, ".got2");
4373 relend = relocs + sec->reloc_count;
4374 for (rel = relocs; rel < relend; rel++)
4376 unsigned long r_symndx;
4377 enum elf_ppc_reloc_type r_type;
4378 struct elf_link_hash_entry *h = NULL;
4380 r_symndx = ELF32_R_SYM (rel->r_info);
4381 if (r_symndx >= symtab_hdr->sh_info)
4383 struct ppc_elf_dyn_relocs **pp, *p;
4384 struct ppc_elf_link_hash_entry *eh;
4386 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4387 while (h->root.type == bfd_link_hash_indirect
4388 || h->root.type == bfd_link_hash_warning)
4389 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4390 eh = (struct ppc_elf_link_hash_entry *) h;
4392 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4395 /* Everything must go for SEC. */
4401 r_type = ELF32_R_TYPE (rel->r_info);
4402 if (!htab->is_vxworks
4404 && local_got_refcounts != NULL
4406 || is_branch_reloc (r_type)))
4408 struct plt_entry **local_plt = (struct plt_entry **)
4409 (local_got_refcounts + symtab_hdr->sh_info);
4410 char *local_got_tls_masks = (char *)
4411 (local_plt + symtab_hdr->sh_info);
4412 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4414 struct plt_entry **ifunc = local_plt + r_symndx;
4416 struct plt_entry *ent;
4418 if (r_type == R_PPC_PLTREL24 && info->shared)
4419 addend = rel->r_addend;
4420 ent = find_plt_ent (ifunc, got2, addend);
4421 if (ent->plt.refcount > 0)
4422 ent->plt.refcount -= 1;
4429 case R_PPC_GOT_TLSLD16:
4430 case R_PPC_GOT_TLSLD16_LO:
4431 case R_PPC_GOT_TLSLD16_HI:
4432 case R_PPC_GOT_TLSLD16_HA:
4433 case R_PPC_GOT_TLSGD16:
4434 case R_PPC_GOT_TLSGD16_LO:
4435 case R_PPC_GOT_TLSGD16_HI:
4436 case R_PPC_GOT_TLSGD16_HA:
4437 case R_PPC_GOT_TPREL16:
4438 case R_PPC_GOT_TPREL16_LO:
4439 case R_PPC_GOT_TPREL16_HI:
4440 case R_PPC_GOT_TPREL16_HA:
4441 case R_PPC_GOT_DTPREL16:
4442 case R_PPC_GOT_DTPREL16_LO:
4443 case R_PPC_GOT_DTPREL16_HI:
4444 case R_PPC_GOT_DTPREL16_HA:
4446 case R_PPC_GOT16_LO:
4447 case R_PPC_GOT16_HI:
4448 case R_PPC_GOT16_HA:
4451 if (h->got.refcount > 0)
4455 struct plt_entry *ent;
4457 ent = find_plt_ent (&h->plt.plist, NULL, 0);
4458 if (ent != NULL && ent->plt.refcount > 0)
4459 ent->plt.refcount -= 1;
4462 else if (local_got_refcounts != NULL)
4464 if (local_got_refcounts[r_symndx] > 0)
4465 local_got_refcounts[r_symndx]--;
4471 case R_PPC_REL14_BRTAKEN:
4472 case R_PPC_REL14_BRNTAKEN:
4474 if (h == NULL || h == htab->elf.hgot)
4481 case R_PPC_ADDR16_LO:
4482 case R_PPC_ADDR16_HI:
4483 case R_PPC_ADDR16_HA:
4485 case R_PPC_ADDR14_BRTAKEN:
4486 case R_PPC_ADDR14_BRNTAKEN:
4493 case R_PPC_PLTREL24:
4494 case R_PPC_PLTREL32:
4495 case R_PPC_PLT16_LO:
4496 case R_PPC_PLT16_HI:
4497 case R_PPC_PLT16_HA:
4501 struct plt_entry *ent;
4503 if (r_type == R_PPC_PLTREL24 && info->shared)
4504 addend = rel->r_addend;
4505 ent = find_plt_ent (&h->plt.plist, got2, addend);
4506 if (ent != NULL && ent->plt.refcount > 0)
4507 ent->plt.refcount -= 1;
4518 /* Set plt output section type, htab->tls_get_addr, and call the
4519 generic ELF tls_setup function. */
4522 ppc_elf_tls_setup (bfd *obfd,
4523 struct bfd_link_info *info,
4524 int no_tls_get_addr_opt)
4526 struct ppc_elf_link_hash_table *htab;
4528 htab = ppc_elf_hash_table (info);
4529 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4530 FALSE, FALSE, TRUE);
4531 if (!no_tls_get_addr_opt)
4533 struct elf_link_hash_entry *opt, *tga;
4534 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
4535 FALSE, FALSE, TRUE);
4537 && (opt->root.type == bfd_link_hash_defined
4538 || opt->root.type == bfd_link_hash_defweak))
4540 /* If glibc supports an optimized __tls_get_addr call stub,
4541 signalled by the presence of __tls_get_addr_opt, and we'll
4542 be calling __tls_get_addr via a plt call stub, then
4543 make __tls_get_addr point to __tls_get_addr_opt. */
4544 tga = htab->tls_get_addr;
4545 if (htab->elf.dynamic_sections_created
4547 && (tga->type == STT_FUNC
4549 && !(SYMBOL_CALLS_LOCAL (info, tga)
4550 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
4551 && tga->root.type == bfd_link_hash_undefweak)))
4553 struct plt_entry *ent;
4554 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
4555 if (ent->plt.refcount > 0)
4559 tga->root.type = bfd_link_hash_indirect;
4560 tga->root.u.i.link = &opt->root;
4561 ppc_elf_copy_indirect_symbol (info, opt, tga);
4562 if (opt->dynindx != -1)
4564 /* Use __tls_get_addr_opt in dynamic relocations. */
4566 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4568 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
4571 htab->tls_get_addr = opt;
4576 no_tls_get_addr_opt = TRUE;
4578 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
4579 if (htab->plt_type == PLT_NEW
4580 && htab->plt != NULL
4581 && htab->plt->output_section != NULL)
4583 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4584 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4587 return _bfd_elf_tls_setup (obfd, info);
4590 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4594 branch_reloc_hash_match (const bfd *ibfd,
4595 const Elf_Internal_Rela *rel,
4596 const struct elf_link_hash_entry *hash)
4598 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4599 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4600 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4602 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
4604 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4605 struct elf_link_hash_entry *h;
4607 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4608 while (h->root.type == bfd_link_hash_indirect
4609 || h->root.type == bfd_link_hash_warning)
4610 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4617 /* Run through all the TLS relocs looking for optimization
4621 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4622 struct bfd_link_info *info)
4626 struct ppc_elf_link_hash_table *htab;
4629 if (info->relocatable || !info->executable)
4632 htab = ppc_elf_hash_table (info);
4633 /* Make two passes through the relocs. First time check that tls
4634 relocs involved in setting up a tls_get_addr call are indeed
4635 followed by such a call. If they are not, exclude them from
4636 the optimizations done on the second pass. */
4637 for (pass = 0; pass < 2; ++pass)
4638 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4640 Elf_Internal_Sym *locsyms = NULL;
4641 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4642 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
4644 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4645 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4647 Elf_Internal_Rela *relstart, *rel, *relend;
4649 /* Read the relocations. */
4650 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4652 if (relstart == NULL)
4655 relend = relstart + sec->reloc_count;
4656 for (rel = relstart; rel < relend; rel++)
4658 enum elf_ppc_reloc_type r_type;
4659 unsigned long r_symndx;
4660 struct elf_link_hash_entry *h = NULL;
4662 char tls_set, tls_clear;
4663 bfd_boolean is_local;
4664 int expecting_tls_get_addr;
4665 bfd_signed_vma *got_count;
4667 r_symndx = ELF32_R_SYM (rel->r_info);
4668 if (r_symndx >= symtab_hdr->sh_info)
4670 struct elf_link_hash_entry **sym_hashes;
4672 sym_hashes = elf_sym_hashes (ibfd);
4673 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4674 while (h->root.type == bfd_link_hash_indirect
4675 || h->root.type == bfd_link_hash_warning)
4676 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4679 expecting_tls_get_addr = 0;
4685 r_type = ELF32_R_TYPE (rel->r_info);
4688 case R_PPC_GOT_TLSLD16:
4689 case R_PPC_GOT_TLSLD16_LO:
4690 expecting_tls_get_addr = 1;
4693 case R_PPC_GOT_TLSLD16_HI:
4694 case R_PPC_GOT_TLSLD16_HA:
4695 /* These relocs should never be against a symbol
4696 defined in a shared lib. Leave them alone if
4697 that turns out to be the case. */
4706 case R_PPC_GOT_TLSGD16:
4707 case R_PPC_GOT_TLSGD16_LO:
4708 expecting_tls_get_addr = 1;
4711 case R_PPC_GOT_TLSGD16_HI:
4712 case R_PPC_GOT_TLSGD16_HA:
4718 tls_set = TLS_TLS | TLS_TPRELGD;
4722 case R_PPC_GOT_TPREL16:
4723 case R_PPC_GOT_TPREL16_LO:
4724 case R_PPC_GOT_TPREL16_HI:
4725 case R_PPC_GOT_TPREL16_HA:
4730 tls_clear = TLS_TPREL;
4738 expecting_tls_get_addr = 2;
4749 if (!expecting_tls_get_addr
4750 || (expecting_tls_get_addr == 1
4751 && !sec->has_tls_get_addr_call))
4754 if (rel + 1 < relend
4755 && branch_reloc_hash_match (ibfd, rel + 1,
4756 htab->tls_get_addr))
4759 /* Uh oh, we didn't find the expected call. We
4760 could just mark this symbol to exclude it
4761 from tls optimization but it's safer to skip
4762 the entire section. */
4763 sec->has_tls_reloc = 0;
4767 if (expecting_tls_get_addr)
4769 struct plt_entry *ent;
4773 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
4774 addend = rel[1].r_addend;
4775 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4777 if (ent != NULL && ent->plt.refcount > 0)
4778 ent->plt.refcount -= 1;
4780 if (expecting_tls_get_addr == 2)
4786 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4787 got_count = &h->got.refcount;
4791 bfd_signed_vma *lgot_refs;
4792 struct plt_entry **local_plt;
4795 if (locsyms == NULL)
4797 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4798 if (locsyms == NULL)
4799 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4800 symtab_hdr->sh_info,
4801 0, NULL, NULL, NULL);
4802 if (locsyms == NULL)
4804 if (elf_section_data (sec)->relocs != relstart)
4809 lgot_refs = elf_local_got_refcounts (ibfd);
4810 if (lgot_refs == NULL)
4812 local_plt = (struct plt_entry **)
4813 (lgot_refs + symtab_hdr->sh_info);
4814 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
4815 tls_mask = &lgot_masks[r_symndx];
4816 got_count = &lgot_refs[r_symndx];
4821 /* We managed to get rid of a got entry. */
4826 *tls_mask |= tls_set;
4827 *tls_mask &= ~tls_clear;
4830 if (elf_section_data (sec)->relocs != relstart)
4835 && (symtab_hdr->contents != (unsigned char *) locsyms))
4837 if (!info->keep_memory)
4840 symtab_hdr->contents = (unsigned char *) locsyms;
4846 /* Return true if we have dynamic relocs that apply to read-only sections. */
4849 readonly_dynrelocs (struct elf_link_hash_entry *h)
4851 struct ppc_elf_dyn_relocs *p;
4853 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4855 asection *s = p->sec->output_section;
4858 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4859 == (SEC_READONLY | SEC_ALLOC)))
4865 /* Adjust a symbol defined by a dynamic object and referenced by a
4866 regular object. The current definition is in some section of the
4867 dynamic object, but we're not including those sections. We have to
4868 change the definition to something the rest of the link can
4872 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4873 struct elf_link_hash_entry *h)
4875 struct ppc_elf_link_hash_table *htab;
4879 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4880 h->root.root.string);
4883 /* Make sure we know what is going on here. */
4884 htab = ppc_elf_hash_table (info);
4885 BFD_ASSERT (htab->elf.dynobj != NULL
4887 || h->type == STT_GNU_IFUNC
4888 || h->u.weakdef != NULL
4891 && !h->def_regular)));
4893 /* Deal with function syms. */
4894 if (h->type == STT_FUNC
4895 || h->type == STT_GNU_IFUNC
4898 /* Clear procedure linkage table information for any symbol that
4899 won't need a .plt entry. */
4900 struct plt_entry *ent;
4901 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4902 if (ent->plt.refcount > 0)
4905 || (h->type != STT_GNU_IFUNC
4906 && (SYMBOL_CALLS_LOCAL (info, h)
4907 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4908 && h->root.type == bfd_link_hash_undefweak))))
4910 /* A PLT entry is not required/allowed when:
4912 1. We are not using ld.so; because then the PLT entry
4913 can't be set up, so we can't use one. In this case,
4914 ppc_elf_adjust_dynamic_symbol won't even be called.
4916 2. GC has rendered the entry unused.
4918 3. We know for certain that a call to this symbol
4919 will go to this object, or will remain undefined. */
4920 h->plt.plist = NULL;
4925 /* After adjust_dynamic_symbol, non_got_ref set in the
4926 non-shared case means that we have allocated space in
4927 .dynbss for the symbol and thus dyn_relocs for this
4928 symbol should be discarded.
4929 If we get here we know we are making a PLT entry for this
4930 symbol, and in an executable we'd normally resolve
4931 relocations against this symbol to the PLT entry. Allow
4932 dynamic relocs if the reference is weak, and the dynamic
4933 relocs will not cause text relocation. */
4934 if (!h->ref_regular_nonweak
4936 && h->type != STT_GNU_IFUNC
4937 && !htab->is_vxworks
4938 && !ppc_elf_hash_entry (h)->has_sda_refs
4939 && !readonly_dynrelocs (h))
4945 h->plt.plist = NULL;
4947 /* If this is a weak symbol, and there is a real definition, the
4948 processor independent code will have arranged for us to see the
4949 real definition first, and we can just use the same value. */
4950 if (h->u.weakdef != NULL)
4952 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4953 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4954 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4955 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4956 if (ELIMINATE_COPY_RELOCS)
4957 h->non_got_ref = h->u.weakdef->non_got_ref;
4961 /* This is a reference to a symbol defined by a dynamic object which
4962 is not a function. */
4964 /* If we are creating a shared library, we must presume that the
4965 only references to the symbol are via the global offset table.
4966 For such cases we need not do anything here; the relocations will
4967 be handled correctly by relocate_section. */
4971 /* If there are no references to this symbol that do not use the
4972 GOT, we don't need to generate a copy reloc. */
4973 if (!h->non_got_ref)
4976 /* If we didn't find any dynamic relocs in read-only sections, then
4977 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4978 We can't do this if there are any small data relocations. This
4979 doesn't work on VxWorks, where we can not have dynamic
4980 relocations (other than copy and jump slot relocations) in an
4982 if (ELIMINATE_COPY_RELOCS
4983 && !ppc_elf_hash_entry (h)->has_sda_refs
4984 && !htab->is_vxworks
4986 && !readonly_dynrelocs (h))
4994 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4995 h->root.root.string);
4999 /* We must allocate the symbol in our .dynbss section, which will
5000 become part of the .bss section of the executable. There will be
5001 an entry for this symbol in the .dynsym section. The dynamic
5002 object will contain position independent code, so all references
5003 from the dynamic object to this symbol will go through the global
5004 offset table. The dynamic linker will use the .dynsym entry to
5005 determine the address it must put in the global offset table, so
5006 both the dynamic object and the regular object will refer to the
5007 same memory location for the variable.
5009 Of course, if the symbol is referenced using SDAREL relocs, we
5010 must instead allocate it in .sbss. */
5012 if (ppc_elf_hash_entry (h)->has_sda_refs)
5016 BFD_ASSERT (s != NULL);
5018 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5019 copy the initial value out of the dynamic object and into the
5020 runtime process image. We need to remember the offset into the
5021 .rela.bss section we are going to use. */
5022 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5026 if (ppc_elf_hash_entry (h)->has_sda_refs)
5027 srel = htab->relsbss;
5029 srel = htab->relbss;
5030 BFD_ASSERT (srel != NULL);
5031 srel->size += sizeof (Elf32_External_Rela);
5035 return _bfd_elf_adjust_dynamic_copy (h, s);
5038 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5039 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5040 specifying the addend on the plt relocation. For -fpic code, the sym
5041 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5042 xxxxxxxx.got2.plt_pic32.<callee>. */
5045 add_stub_sym (struct plt_entry *ent,
5046 struct elf_link_hash_entry *h,
5047 struct bfd_link_info *info)
5049 struct elf_link_hash_entry *sh;
5050 size_t len1, len2, len3;
5053 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5056 stub = ".plt_pic32.";
5058 stub = ".plt_call32.";
5060 len1 = strlen (h->root.root.string);
5061 len2 = strlen (stub);
5064 len3 = strlen (ent->sec->name);
5065 name = bfd_malloc (len1 + len2 + len3 + 9);
5068 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5070 memcpy (name + 8, ent->sec->name, len3);
5071 memcpy (name + 8 + len3, stub, len2);
5072 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5073 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5076 if (sh->root.type == bfd_link_hash_new)
5078 sh->root.type = bfd_link_hash_defined;
5079 sh->root.u.def.section = htab->glink;
5080 sh->root.u.def.value = ent->glink_offset;
5081 sh->ref_regular = 1;
5082 sh->def_regular = 1;
5083 sh->ref_regular_nonweak = 1;
5084 sh->forced_local = 1;
5090 /* Allocate NEED contiguous space in .got, and return the offset.
5091 Handles allocation of the got header when crossing 32k. */
5094 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5097 unsigned int max_before_header;
5099 if (htab->plt_type == PLT_VXWORKS)
5101 where = htab->got->size;
5102 htab->got->size += need;
5106 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5107 if (need <= htab->got_gap)
5109 where = max_before_header - htab->got_gap;
5110 htab->got_gap -= need;
5114 if (htab->got->size + need > max_before_header
5115 && htab->got->size <= max_before_header)
5117 htab->got_gap = max_before_header - htab->got->size;
5118 htab->got->size = max_before_header + htab->got_header_size;
5120 where = htab->got->size;
5121 htab->got->size += need;
5127 /* Allocate space in associated reloc sections for dynamic relocs. */
5130 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5132 struct bfd_link_info *info = inf;
5133 struct ppc_elf_link_hash_entry *eh;
5134 struct ppc_elf_link_hash_table *htab;
5135 struct ppc_elf_dyn_relocs *p;
5137 if (h->root.type == bfd_link_hash_indirect)
5140 if (h->root.type == bfd_link_hash_warning)
5141 /* When warning symbols are created, they **replace** the "real"
5142 entry in the hash table, thus we never get to see the real
5143 symbol in a hash traversal. So look at it now. */
5144 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5146 htab = ppc_elf_hash_table (info);
5147 if (htab->elf.dynamic_sections_created
5148 || h->type == STT_GNU_IFUNC)
5150 struct plt_entry *ent;
5151 bfd_boolean doneone = FALSE;
5152 bfd_vma plt_offset = 0, glink_offset = 0;
5155 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5156 if (ent->plt.refcount > 0)
5158 /* Make sure this symbol is output as a dynamic symbol. */
5159 if (h->dynindx == -1
5162 && htab->elf.dynamic_sections_created)
5164 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5168 dyn = htab->elf.dynamic_sections_created;
5170 || h->type == STT_GNU_IFUNC
5171 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5173 asection *s = htab->plt;
5174 if (!dyn || h->dynindx == -1)
5177 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5181 plt_offset = s->size;
5184 ent->plt.offset = plt_offset;
5187 if (!doneone || info->shared)
5189 glink_offset = s->size;
5190 s->size += GLINK_ENTRY_SIZE;
5191 if (h == htab->tls_get_addr
5192 && !htab->no_tls_get_addr_opt)
5193 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5200 h->root.u.def.section = s;
5201 h->root.u.def.value = glink_offset;
5203 ent->glink_offset = glink_offset;
5205 if (htab->emit_stub_syms
5206 && !add_stub_sym (ent, h, info))
5213 /* If this is the first .plt entry, make room
5214 for the special first entry. */
5216 s->size += htab->plt_initial_entry_size;
5218 /* The PowerPC PLT is actually composed of two
5219 parts, the first part is 2 words (for a load
5220 and a jump), and then there is a remaining
5221 word available at the end. */
5222 plt_offset = (htab->plt_initial_entry_size
5223 + (htab->plt_slot_size
5225 - htab->plt_initial_entry_size)
5226 / htab->plt_entry_size)));
5228 /* If this symbol is not defined in a regular
5229 file, and we are not generating a shared
5230 library, then set the symbol to this location
5231 in the .plt. This is to avoid text
5232 relocations, and is required to make
5233 function pointers compare as equal between
5234 the normal executable and the shared library. */
5239 h->root.u.def.section = s;
5240 h->root.u.def.value = plt_offset;
5243 /* Make room for this entry. */
5244 s->size += htab->plt_entry_size;
5245 /* After the 8192nd entry, room for two entries
5247 if (htab->plt_type == PLT_OLD
5248 && (s->size - htab->plt_initial_entry_size)
5249 / htab->plt_entry_size
5250 > PLT_NUM_SINGLE_ENTRIES)
5251 s->size += htab->plt_entry_size;
5253 ent->plt.offset = plt_offset;
5256 /* We also need to make an entry in the .rela.plt section. */
5259 if (!htab->elf.dynamic_sections_created
5260 || h->dynindx == -1)
5261 htab->reliplt->size += sizeof (Elf32_External_Rela);
5264 htab->relplt->size += sizeof (Elf32_External_Rela);
5266 if (htab->plt_type == PLT_VXWORKS)
5268 /* Allocate space for the unloaded relocations. */
5270 && htab->elf.dynamic_sections_created)
5273 == (bfd_vma) htab->plt_initial_entry_size)
5275 htab->srelplt2->size
5276 += (sizeof (Elf32_External_Rela)
5277 * VXWORKS_PLTRESOLVE_RELOCS);
5280 htab->srelplt2->size
5281 += (sizeof (Elf32_External_Rela)
5282 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5285 /* Every PLT entry has an associated GOT entry in
5287 htab->sgotplt->size += 4;
5294 ent->plt.offset = (bfd_vma) -1;
5297 ent->plt.offset = (bfd_vma) -1;
5301 h->plt.plist = NULL;
5307 h->plt.plist = NULL;
5311 eh = (struct ppc_elf_link_hash_entry *) h;
5312 if (eh->elf.got.refcount > 0)
5317 /* Make sure this symbol is output as a dynamic symbol. */
5318 if (eh->elf.dynindx == -1
5319 && !eh->elf.forced_local
5320 && eh->elf.type != STT_GNU_IFUNC
5321 && htab->elf.dynamic_sections_created)
5323 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5328 if ((eh->tls_mask & TLS_TLS) != 0)
5330 if ((eh->tls_mask & TLS_LD) != 0)
5332 if (!eh->elf.def_dynamic)
5333 /* We'll just use htab->tlsld_got.offset. This should
5334 always be the case. It's a little odd if we have
5335 a local dynamic reloc against a non-local symbol. */
5336 htab->tlsld_got.refcount += 1;
5340 if ((eh->tls_mask & TLS_GD) != 0)
5342 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5344 if ((eh->tls_mask & TLS_DTPREL) != 0)
5350 eh->elf.got.offset = (bfd_vma) -1;
5353 eh->elf.got.offset = allocate_got (htab, need);
5354 dyn = htab->elf.dynamic_sections_created;
5356 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5357 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5358 || eh->elf.root.type != bfd_link_hash_undefweak))
5360 asection *rsec = htab->relgot;
5361 /* All the entries we allocated need relocs.
5362 Except LD only needs one. */
5363 if ((eh->tls_mask & TLS_LD) != 0
5364 && eh->elf.def_dynamic)
5366 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5371 eh->elf.got.offset = (bfd_vma) -1;
5373 if (eh->dyn_relocs == NULL
5374 || !htab->elf.dynamic_sections_created)
5377 /* In the shared -Bsymbolic case, discard space allocated for
5378 dynamic pc-relative relocs against symbols which turn out to be
5379 defined in regular objects. For the normal shared case, discard
5380 space for relocs that have become local due to symbol visibility
5385 /* Relocs that use pc_count are those that appear on a call insn,
5386 or certain REL relocs (see must_be_dyn_reloc) that can be
5387 generated via assembly. We want calls to protected symbols to
5388 resolve directly to the function rather than going via the plt.
5389 If people want function pointer comparisons to work as expected
5390 then they should avoid writing weird assembly. */
5391 if (SYMBOL_CALLS_LOCAL (info, h))
5393 struct ppc_elf_dyn_relocs **pp;
5395 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5397 p->count -= p->pc_count;
5406 if (htab->is_vxworks)
5408 struct ppc_elf_dyn_relocs **pp;
5410 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5412 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5419 /* Discard relocs on undefined symbols that must be local. */
5420 if (eh->dyn_relocs != NULL
5421 && h->root.type == bfd_link_hash_undefined
5422 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5423 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5424 eh->dyn_relocs = NULL;
5426 /* Also discard relocs on undefined weak syms with non-default
5428 if (eh->dyn_relocs != NULL
5429 && h->root.type == bfd_link_hash_undefweak)
5431 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5432 eh->dyn_relocs = NULL;
5434 /* Make sure undefined weak symbols are output as a dynamic
5436 else if (h->dynindx == -1
5440 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5445 else if (ELIMINATE_COPY_RELOCS)
5447 /* For the non-shared case, discard space for relocs against
5448 symbols which turn out to need copy relocs or are not
5454 /* Make sure this symbol is output as a dynamic symbol.
5455 Undefined weak syms won't yet be marked as dynamic. */
5456 if (h->dynindx == -1
5457 && !h->forced_local)
5459 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5463 /* If that succeeded, we know we'll be keeping all the
5465 if (h->dynindx != -1)
5469 eh->dyn_relocs = NULL;
5474 /* Finally, allocate space. */
5475 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5477 asection *sreloc = elf_section_data (p->sec)->sreloc;
5478 if (!htab->elf.dynamic_sections_created)
5479 sreloc = htab->reliplt;
5480 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5486 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5487 read-only sections. */
5490 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5492 if (h->root.type == bfd_link_hash_indirect)
5495 if (h->root.type == bfd_link_hash_warning)
5496 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5498 if (readonly_dynrelocs (h))
5500 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5502 /* Not an error, just cut short the traversal. */
5508 /* Set the sizes of the dynamic sections. */
5511 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5512 struct bfd_link_info *info)
5514 struct ppc_elf_link_hash_table *htab;
5520 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5523 htab = ppc_elf_hash_table (info);
5524 BFD_ASSERT (htab->elf.dynobj != NULL);
5526 if (elf_hash_table (info)->dynamic_sections_created)
5528 /* Set the contents of the .interp section to the interpreter. */
5529 if (info->executable)
5531 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5532 BFD_ASSERT (s != NULL);
5533 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5534 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5538 if (htab->plt_type == PLT_OLD)
5539 htab->got_header_size = 16;
5540 else if (htab->plt_type == PLT_NEW)
5541 htab->got_header_size = 12;
5543 /* Set up .got offsets for local syms, and space for local dynamic
5545 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5547 bfd_signed_vma *local_got;
5548 bfd_signed_vma *end_local_got;
5549 struct plt_entry **local_plt;
5550 struct plt_entry **end_local_plt;
5552 bfd_size_type locsymcount;
5553 Elf_Internal_Shdr *symtab_hdr;
5555 if (!is_ppc_elf (ibfd))
5558 for (s = ibfd->sections; s != NULL; s = s->next)
5560 struct ppc_elf_dyn_relocs *p;
5562 for (p = ((struct ppc_elf_dyn_relocs *)
5563 elf_section_data (s)->local_dynrel);
5567 if (!bfd_is_abs_section (p->sec)
5568 && bfd_is_abs_section (p->sec->output_section))
5570 /* Input section has been discarded, either because
5571 it is a copy of a linkonce section or due to
5572 linker script /DISCARD/, so we'll be discarding
5575 else if (htab->is_vxworks
5576 && strcmp (p->sec->output_section->name,
5579 /* Relocations in vxworks .tls_vars sections are
5580 handled specially by the loader. */
5582 else if (p->count != 0)
5584 asection *sreloc = elf_section_data (p->sec)->sreloc;
5585 if (!htab->elf.dynamic_sections_created)
5586 sreloc = htab->reliplt;
5587 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5588 if ((p->sec->output_section->flags
5589 & (SEC_READONLY | SEC_ALLOC))
5590 == (SEC_READONLY | SEC_ALLOC))
5591 info->flags |= DF_TEXTREL;
5596 local_got = elf_local_got_refcounts (ibfd);
5600 symtab_hdr = &elf_symtab_hdr (ibfd);
5601 locsymcount = symtab_hdr->sh_info;
5602 end_local_got = local_got + locsymcount;
5603 local_plt = (struct plt_entry **) end_local_got;
5604 end_local_plt = local_plt + locsymcount;
5605 lgot_masks = (char *) end_local_plt;
5607 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5610 unsigned int need = 0;
5611 if ((*lgot_masks & TLS_TLS) != 0)
5613 if ((*lgot_masks & TLS_GD) != 0)
5615 if ((*lgot_masks & TLS_LD) != 0)
5616 htab->tlsld_got.refcount += 1;
5617 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5619 if ((*lgot_masks & TLS_DTPREL) != 0)
5625 *local_got = (bfd_vma) -1;
5628 *local_got = allocate_got (htab, need);
5630 htab->relgot->size += (need
5631 * (sizeof (Elf32_External_Rela) / 4));
5635 *local_got = (bfd_vma) -1;
5637 if (htab->is_vxworks)
5640 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5641 for (; local_plt < end_local_plt; ++local_plt)
5643 struct plt_entry *ent;
5644 bfd_boolean doneone = FALSE;
5645 bfd_vma plt_offset = 0, glink_offset = 0;
5647 for (ent = *local_plt; ent != NULL; ent = ent->next)
5648 if (ent->plt.refcount > 0)
5654 plt_offset = s->size;
5657 ent->plt.offset = plt_offset;
5660 if (!doneone || info->shared)
5662 glink_offset = s->size;
5663 s->size += GLINK_ENTRY_SIZE;
5665 ent->glink_offset = glink_offset;
5669 htab->reliplt->size += sizeof (Elf32_External_Rela);
5674 ent->plt.offset = (bfd_vma) -1;
5678 /* Allocate space for global sym dynamic relocs. */
5679 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5681 if (htab->tlsld_got.refcount > 0)
5683 htab->tlsld_got.offset = allocate_got (htab, 8);
5685 htab->relgot->size += sizeof (Elf32_External_Rela);
5688 htab->tlsld_got.offset = (bfd_vma) -1;
5690 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5692 unsigned int g_o_t = 32768;
5694 /* If we haven't allocated the header, do so now. When we get here,
5695 for old plt/got the got size will be 0 to 32764 (not allocated),
5696 or 32780 to 65536 (header allocated). For new plt/got, the
5697 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5698 if (htab->got->size <= 32768)
5700 g_o_t = htab->got->size;
5701 if (htab->plt_type == PLT_OLD)
5703 htab->got->size += htab->got_header_size;
5706 htab->elf.hgot->root.u.def.value = g_o_t;
5710 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
5712 && !(sda->root.type == bfd_link_hash_defined
5713 || sda->root.type == bfd_link_hash_defweak))
5715 sda->root.type = bfd_link_hash_defined;
5716 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
5717 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
5721 if (htab->glink != NULL
5722 && htab->glink->size != 0
5723 && htab->elf.dynamic_sections_created)
5725 htab->glink_pltresolve = htab->glink->size;
5726 /* Space for the branch table. */
5727 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5728 /* Pad out to align the start of PLTresolve. */
5729 htab->glink->size += -htab->glink->size & 15;
5730 htab->glink->size += GLINK_PLTRESOLVE;
5732 if (htab->emit_stub_syms)
5734 struct elf_link_hash_entry *sh;
5735 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5736 TRUE, FALSE, FALSE);
5739 if (sh->root.type == bfd_link_hash_new)
5741 sh->root.type = bfd_link_hash_defined;
5742 sh->root.u.def.section = htab->glink;
5743 sh->root.u.def.value = htab->glink_pltresolve;
5744 sh->ref_regular = 1;
5745 sh->def_regular = 1;
5746 sh->ref_regular_nonweak = 1;
5747 sh->forced_local = 1;
5750 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5751 TRUE, FALSE, FALSE);
5754 if (sh->root.type == bfd_link_hash_new)
5756 sh->root.type = bfd_link_hash_defined;
5757 sh->root.u.def.section = htab->glink;
5758 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5759 sh->ref_regular = 1;
5760 sh->def_regular = 1;
5761 sh->ref_regular_nonweak = 1;
5762 sh->forced_local = 1;
5768 /* We've now determined the sizes of the various dynamic sections.
5769 Allocate memory for them. */
5771 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5773 bfd_boolean strip_section = TRUE;
5775 if ((s->flags & SEC_LINKER_CREATED) == 0)
5781 /* We'd like to strip these sections if they aren't needed, but if
5782 we've exported dynamic symbols from them we must leave them.
5783 It's too late to tell BFD to get rid of the symbols. */
5784 if (htab->elf.hplt != NULL)
5785 strip_section = FALSE;
5786 /* Strip this section if we don't need it; see the
5789 else if (s == htab->iplt
5791 || s == htab->sgotplt
5793 || s == htab->dynbss
5794 || s == htab->dynsbss
5795 || s == htab->sdata[0].section
5796 || s == htab->sdata[1].section)
5798 /* Strip these too. */
5800 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5804 /* Remember whether there are any relocation sections. */
5807 /* We use the reloc_count field as a counter if we need
5808 to copy relocs into the output file. */
5814 /* It's not one of our sections, so don't allocate space. */
5818 if (s->size == 0 && strip_section)
5820 /* If we don't need this section, strip it from the
5821 output file. This is mostly to handle .rela.bss and
5822 .rela.plt. We must create both sections in
5823 create_dynamic_sections, because they must be created
5824 before the linker maps input sections to output
5825 sections. The linker does that before
5826 adjust_dynamic_symbol is called, and it is that
5827 function which decides whether anything needs to go
5828 into these sections. */
5829 s->flags |= SEC_EXCLUDE;
5833 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5836 /* Allocate memory for the section contents. */
5837 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5838 if (s->contents == NULL)
5842 if (htab->elf.dynamic_sections_created)
5844 /* Add some entries to the .dynamic section. We fill in the
5845 values later, in ppc_elf_finish_dynamic_sections, but we
5846 must add the entries now so that we get the correct size for
5847 the .dynamic section. The DT_DEBUG entry is filled in by the
5848 dynamic linker and used by the debugger. */
5849 #define add_dynamic_entry(TAG, VAL) \
5850 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5852 if (info->executable)
5854 if (!add_dynamic_entry (DT_DEBUG, 0))
5858 if (htab->plt != NULL && htab->plt->size != 0)
5860 if (!add_dynamic_entry (DT_PLTGOT, 0)
5861 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5862 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5863 || !add_dynamic_entry (DT_JMPREL, 0))
5867 if (htab->glink != NULL && htab->glink->size != 0)
5869 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5871 if (!htab->no_tls_get_addr_opt
5872 && htab->tls_get_addr != NULL
5873 && htab->tls_get_addr->plt.plist != NULL
5874 && !add_dynamic_entry (DT_PPC_TLSOPT, 0))
5880 if (!add_dynamic_entry (DT_RELA, 0)
5881 || !add_dynamic_entry (DT_RELASZ, 0)
5882 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5886 /* If any dynamic relocs apply to a read-only section, then we
5887 need a DT_TEXTREL entry. */
5888 if ((info->flags & DF_TEXTREL) == 0)
5889 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5892 if ((info->flags & DF_TEXTREL) != 0)
5894 if (!add_dynamic_entry (DT_TEXTREL, 0))
5897 if (htab->is_vxworks
5898 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5901 #undef add_dynamic_entry
5906 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5909 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5911 if (h->plt.plist != NULL
5913 && (!h->pointer_equality_needed
5914 || !h->ref_regular_nonweak))
5917 return _bfd_elf_hash_symbol (h);
5920 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5922 /* Relaxation trampolines. r12 is available for clobbering (r11, is
5923 used for some functions that are allowed to break the ABI). */
5924 static const int shared_stub_entry[] =
5926 0x7c0802a6, /* mflr 0 */
5927 0x429f0005, /* bcl 20, 31, .Lxxx */
5928 0x7d8802a6, /* mflr 12 */
5929 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
5930 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
5931 0x7c0803a6, /* mtlr 0 */
5932 0x7d8903a6, /* mtctr 12 */
5933 0x4e800420, /* bctr */
5936 static const int stub_entry[] =
5938 0x3d800000, /* lis 12,xxx@ha */
5939 0x398c0000, /* addi 12,12,xxx@l */
5940 0x7d8903a6, /* mtctr 12 */
5941 0x4e800420, /* bctr */
5945 ppc_elf_relax_section (bfd *abfd,
5947 struct bfd_link_info *link_info,
5952 struct one_fixup *next;
5954 /* Final link, can use the symbol offset. For a
5955 relocatable link we use the symbol's index. */
5960 Elf_Internal_Shdr *symtab_hdr;
5961 bfd_byte *contents = NULL;
5962 Elf_Internal_Sym *isymbuf = NULL;
5963 Elf_Internal_Rela *internal_relocs = NULL;
5964 Elf_Internal_Rela *irel, *irelend;
5965 struct one_fixup *fixups = NULL;
5966 unsigned changes = 0;
5967 struct ppc_elf_link_hash_table *htab;
5968 bfd_size_type trampoff;
5970 bfd_boolean maybe_pasted;
5974 /* Nothing to do if there are no relocations, and no need to do
5975 anything with non-alloc or non-code sections. */
5976 if ((isec->flags & SEC_ALLOC) == 0
5977 || (isec->flags & SEC_CODE) == 0
5978 || (isec->flags & SEC_RELOC) == 0
5979 || isec->reloc_count == 0)
5982 /* We cannot represent the required PIC relocs in the output, so don't
5983 do anything. The linker doesn't support mixing -shared and -r
5985 if (link_info->relocatable && link_info->shared)
5988 trampoff = (isec->size + 3) & (bfd_vma) -4;
5989 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
5990 || strcmp (isec->output_section->name, ".fini") == 0);
5991 /* Space for a branch around any trampolines. */
5995 symtab_hdr = &elf_symtab_hdr (abfd);
5997 /* Get a copy of the native relocations. */
5998 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5999 link_info->keep_memory);
6000 if (internal_relocs == NULL)
6003 htab = ppc_elf_hash_table (link_info);
6004 got2 = bfd_get_section_by_name (abfd, ".got2");
6006 irelend = internal_relocs + isec->reloc_count;
6007 for (irel = internal_relocs; irel < irelend; irel++)
6009 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6012 struct one_fixup *f;
6013 size_t insn_offset = 0;
6014 bfd_vma max_branch_offset, val;
6017 struct elf_link_hash_entry *h;
6018 struct plt_entry **plist;
6019 unsigned char sym_type;
6024 case R_PPC_LOCAL24PC:
6025 case R_PPC_PLTREL24:
6026 max_branch_offset = 1 << 25;
6030 case R_PPC_REL14_BRTAKEN:
6031 case R_PPC_REL14_BRNTAKEN:
6032 max_branch_offset = 1 << 15;
6039 /* Get the value of the symbol referred to by the reloc. */
6041 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6043 /* A local symbol. */
6044 Elf_Internal_Sym *isym;
6046 /* Read this BFD's local symbols. */
6047 if (isymbuf == NULL)
6049 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6050 if (isymbuf == NULL)
6051 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6052 symtab_hdr->sh_info, 0,
6057 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6058 if (isym->st_shndx == SHN_UNDEF)
6059 tsec = bfd_und_section_ptr;
6060 else if (isym->st_shndx == SHN_ABS)
6061 tsec = bfd_abs_section_ptr;
6062 else if (isym->st_shndx == SHN_COMMON)
6063 tsec = bfd_com_section_ptr;
6065 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6067 toff = isym->st_value;
6068 sym_type = ELF_ST_TYPE (isym->st_info);
6072 /* Global symbol handling. */
6075 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6076 h = elf_sym_hashes (abfd)[indx];
6078 while (h->root.type == bfd_link_hash_indirect
6079 || h->root.type == bfd_link_hash_warning)
6080 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6082 if (h->root.type == bfd_link_hash_defined
6083 || h->root.type == bfd_link_hash_defweak)
6085 tsec = h->root.u.def.section;
6086 toff = h->root.u.def.value;
6088 else if (h->root.type == bfd_link_hash_undefined
6089 || h->root.type == bfd_link_hash_undefweak)
6091 tsec = bfd_und_section_ptr;
6092 toff = link_info->relocatable ? indx : 0;
6100 /* The condition here under which we call find_plt_ent must
6101 match that in relocate_section. If we call find_plt_ent here
6102 but not in relocate_section, or vice versa, then the branch
6103 destination used here may be incorrect. */
6107 /* We know is_branch_reloc (r_type) is true. */
6108 if (h->type == STT_GNU_IFUNC
6109 || r_type == R_PPC_PLTREL24)
6110 plist = &h->plt.plist;
6112 else if (sym_type == STT_GNU_IFUNC
6113 && elf_local_got_offsets (abfd) != NULL)
6115 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6116 struct plt_entry **local_plt = (struct plt_entry **)
6117 (local_got_offsets + symtab_hdr->sh_info);
6118 plist = local_plt + ELF32_R_SYM (irel->r_info);
6123 struct plt_entry *ent;
6125 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6126 addend = irel->r_addend;
6127 ent = find_plt_ent (plist, got2, addend);
6130 if (htab->plt_type == PLT_NEW
6132 || !htab->elf.dynamic_sections_created
6133 || h->dynindx == -1)
6136 toff = ent->glink_offset;
6141 toff = ent->plt.offset;
6146 /* If the branch and target are in the same section, you have
6147 no hope of adding stubs. We'll error out later should the
6152 /* There probably isn't any reason to handle symbols in
6153 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6154 attribute for a code section, and we are only looking at
6155 branches. However, implement it correctly here as a
6156 reference for other target relax_section functions. */
6157 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6159 /* At this stage in linking, no SEC_MERGE symbol has been
6160 adjusted, so all references to such symbols need to be
6161 passed through _bfd_merged_section_offset. (Later, in
6162 relocate_section, all SEC_MERGE symbols *except* for
6163 section symbols have been adjusted.)
6165 gas may reduce relocations against symbols in SEC_MERGE
6166 sections to a relocation against the section symbol when
6167 the original addend was zero. When the reloc is against
6168 a section symbol we should include the addend in the
6169 offset passed to _bfd_merged_section_offset, since the
6170 location of interest is the original symbol. On the
6171 other hand, an access to "sym+addend" where "sym" is not
6172 a section symbol should not include the addend; Such an
6173 access is presumed to be an offset from "sym"; The
6174 location of interest is just "sym". */
6175 if (sym_type == STT_SECTION)
6176 toff += irel->r_addend;
6178 toff = _bfd_merged_section_offset (abfd, &tsec,
6179 elf_section_data (tsec)->sec_info,
6182 if (sym_type != STT_SECTION)
6183 toff += irel->r_addend;
6185 /* PLTREL24 addends are special. */
6186 else if (r_type != R_PPC_PLTREL24)
6187 toff += irel->r_addend;
6189 /* Attempted -shared link of non-pic code loses. */
6190 if (tsec->output_section == NULL)
6193 roff = irel->r_offset;
6195 /* If the branch is in range, no need to do anything. */
6196 if (tsec != bfd_und_section_ptr
6197 && (!link_info->relocatable
6198 /* A relocatable link may have sections moved during
6199 final link, so do not presume they remain in range. */
6200 || tsec->output_section == isec->output_section))
6202 bfd_vma symaddr, reladdr;
6204 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6205 reladdr = isec->output_section->vma + isec->output_offset + roff;
6206 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6210 /* Look for an existing fixup to this address. */
6211 for (f = fixups; f ; f = f->next)
6212 if (f->tsec == tsec && f->toff == toff)
6218 unsigned long stub_rtype;
6220 val = trampoff - roff;
6221 if (val >= max_branch_offset)
6222 /* Oh dear, we can't reach a trampoline. Don't try to add
6223 one. We'll report an error later. */
6226 if (link_info->shared)
6228 size = 4 * ARRAY_SIZE (shared_stub_entry);
6233 size = 4 * ARRAY_SIZE (stub_entry);
6236 stub_rtype = R_PPC_RELAX;
6237 if (tsec == htab->plt
6238 || tsec == htab->glink)
6240 stub_rtype = R_PPC_RELAX_PLT;
6241 if (r_type == R_PPC_PLTREL24)
6242 stub_rtype = R_PPC_RELAX_PLTREL24;
6245 /* Hijack the old relocation. Since we need two
6246 relocations for this use a "composite" reloc. */
6247 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6249 irel->r_offset = trampoff + insn_offset;
6250 if (r_type == R_PPC_PLTREL24
6251 && stub_rtype != R_PPC_RELAX_PLTREL24)
6254 /* Record the fixup so we don't do it again this section. */
6255 f = bfd_malloc (sizeof (*f));
6259 f->trampoff = trampoff;
6267 val = f->trampoff - roff;
6268 if (val >= max_branch_offset)
6271 /* Nop out the reloc, since we're finalizing things here. */
6272 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6275 /* Get the section contents. */
6276 if (contents == NULL)
6278 /* Get cached copy if it exists. */
6279 if (elf_section_data (isec)->this_hdr.contents != NULL)
6280 contents = elf_section_data (isec)->this_hdr.contents;
6283 /* Go get them off disk. */
6284 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6289 /* Fix up the existing branch to hit the trampoline. */
6290 hit_addr = contents + roff;
6294 case R_PPC_LOCAL24PC:
6295 case R_PPC_PLTREL24:
6296 t0 = bfd_get_32 (abfd, hit_addr);
6298 t0 |= val & 0x3fffffc;
6299 bfd_put_32 (abfd, t0, hit_addr);
6303 case R_PPC_REL14_BRTAKEN:
6304 case R_PPC_REL14_BRNTAKEN:
6305 t0 = bfd_get_32 (abfd, hit_addr);
6308 bfd_put_32 (abfd, t0, hit_addr);
6313 /* Write out the trampolines. */
6322 struct one_fixup *f = fixups;
6323 fixups = fixups->next;
6328 contents = bfd_realloc_or_free (contents, trampoff);
6329 if (contents == NULL)
6332 isec->size = (isec->size + 3) & (bfd_vma) -4;
6333 dest = contents + isec->size;
6334 /* Branch around the trampolines. */
6337 bfd_vma val = B + trampoff - isec->size;
6338 bfd_put_32 (abfd, val, dest);
6341 isec->size = trampoff;
6343 if (link_info->shared)
6345 stub = shared_stub_entry;
6346 size = ARRAY_SIZE (shared_stub_entry);
6351 size = ARRAY_SIZE (stub_entry);
6355 while (dest < contents + trampoff)
6357 bfd_put_32 (abfd, stub[i], dest);
6363 BFD_ASSERT (i == 0);
6367 && symtab_hdr->contents != (unsigned char *) isymbuf)
6369 if (! link_info->keep_memory)
6373 /* Cache the symbols for elf_link_input_bfd. */
6374 symtab_hdr->contents = (unsigned char *) isymbuf;
6378 if (contents != NULL
6379 && elf_section_data (isec)->this_hdr.contents != contents)
6381 if (!changes && !link_info->keep_memory)
6385 /* Cache the section contents for elf_link_input_bfd. */
6386 elf_section_data (isec)->this_hdr.contents = contents;
6392 /* Append sufficient NOP relocs so we can write out relocation
6393 information for the trampolines. */
6394 Elf_Internal_Shdr *rel_hdr;
6395 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6396 * sizeof (*new_relocs));
6401 memcpy (new_relocs, internal_relocs,
6402 isec->reloc_count * sizeof (*new_relocs));
6403 for (ix = changes; ix--;)
6405 irel = new_relocs + ix + isec->reloc_count;
6407 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6409 if (internal_relocs != elf_section_data (isec)->relocs)
6410 free (internal_relocs);
6411 elf_section_data (isec)->relocs = new_relocs;
6412 isec->reloc_count += changes;
6413 rel_hdr = _bfd_elf_single_rel_hdr (isec);
6414 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
6416 else if (elf_section_data (isec)->relocs != internal_relocs)
6417 free (internal_relocs);
6419 *again = changes != 0;
6420 if (!*again && link_info->relocatable)
6422 /* Convert the internal relax relocs to external form. */
6423 for (irel = internal_relocs; irel < irelend; irel++)
6424 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
6426 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6428 /* Rewrite the reloc and convert one of the trailing nop
6429 relocs to describe this relocation. */
6430 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6431 /* The relocs are at the bottom 2 bytes */
6432 irel[0].r_offset += 2;
6433 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6434 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6435 irel[1].r_offset += 4;
6436 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6444 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6446 if (contents != NULL
6447 && elf_section_data (isec)->this_hdr.contents != contents)
6449 if (internal_relocs != NULL
6450 && elf_section_data (isec)->relocs != internal_relocs)
6451 free (internal_relocs);
6455 /* What to do when ld finds relocations against symbols defined in
6456 discarded sections. */
6459 ppc_elf_action_discarded (asection *sec)
6461 if (strcmp (".fixup", sec->name) == 0)
6464 if (strcmp (".got2", sec->name) == 0)
6467 return _bfd_elf_default_action_discarded (sec);
6470 /* Fill in the address for a pointer generated in a linker section. */
6473 elf_finish_pointer_linker_section (bfd *input_bfd,
6474 elf_linker_section_t *lsect,
6475 struct elf_link_hash_entry *h,
6477 const Elf_Internal_Rela *rel)
6479 elf_linker_section_pointers_t *linker_section_ptr;
6481 BFD_ASSERT (lsect != NULL);
6485 /* Handle global symbol. */
6486 struct ppc_elf_link_hash_entry *eh;
6488 eh = (struct ppc_elf_link_hash_entry *) h;
6489 BFD_ASSERT (eh->elf.def_regular);
6490 linker_section_ptr = eh->linker_section_pointer;
6494 /* Handle local symbol. */
6495 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6497 BFD_ASSERT (is_ppc_elf (input_bfd));
6498 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6499 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6502 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6505 BFD_ASSERT (linker_section_ptr != NULL);
6507 /* Offset will always be a multiple of four, so use the bottom bit
6508 as a "written" flag. */
6509 if ((linker_section_ptr->offset & 1) == 0)
6511 bfd_put_32 (lsect->section->owner,
6512 relocation + linker_section_ptr->addend,
6513 lsect->section->contents + linker_section_ptr->offset);
6514 linker_section_ptr->offset += 1;
6517 relocation = (lsect->section->output_section->vma
6518 + lsect->section->output_offset
6519 + linker_section_ptr->offset - 1
6520 - SYM_VAL (lsect->sym));
6524 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6525 lsect->name, (long) relocation, (long) relocation);
6531 #define PPC_LO(v) ((v) & 0xffff)
6532 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6533 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6536 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
6537 struct bfd_link_info *info)
6539 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6540 bfd *output_bfd = info->output_bfd;
6543 plt = ((ent->plt.offset & ~1)
6544 + plt_sec->output_section->vma
6545 + plt_sec->output_offset);
6551 if (ent->addend >= 32768)
6553 + ent->sec->output_section->vma
6554 + ent->sec->output_offset);
6555 else if (htab->elf.hgot != NULL)
6556 got = SYM_VAL (htab->elf.hgot);
6560 if (plt + 0x8000 < 0x10000)
6562 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6564 bfd_put_32 (output_bfd, MTCTR_11, p);
6566 bfd_put_32 (output_bfd, BCTR, p);
6568 bfd_put_32 (output_bfd, NOP, p);
6573 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6575 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6577 bfd_put_32 (output_bfd, MTCTR_11, p);
6579 bfd_put_32 (output_bfd, BCTR, p);
6585 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6587 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6589 bfd_put_32 (output_bfd, MTCTR_11, p);
6591 bfd_put_32 (output_bfd, BCTR, p);
6596 /* Return true if symbol is defined statically. */
6599 is_static_defined (struct elf_link_hash_entry *h)
6601 return ((h->root.type == bfd_link_hash_defined
6602 || h->root.type == bfd_link_hash_defweak)
6603 && h->root.u.def.section != NULL
6604 && h->root.u.def.section->output_section != NULL);
6607 /* If INSN is an opcode that may be used with an @tls operand, return
6608 the transformed insn for TLS optimisation, otherwise return 0. If
6609 REG is non-zero only match an insn with RB or RA equal to REG. */
6612 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
6616 if ((insn & (0x3f << 26)) != 31 << 26)
6619 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
6620 rtra = insn & ((1 << 26) - (1 << 16));
6621 else if (((insn >> 16) & 0x1f) == reg)
6622 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
6626 if ((insn & (0x3ff << 1)) == 266 << 1)
6629 else if ((insn & (0x1f << 1)) == 23 << 1
6630 && ((insn & (0x1f << 6)) < 14 << 6
6631 || ((insn & (0x1f << 6)) >= 16 << 6
6632 && (insn & (0x1f << 6)) < 24 << 6)))
6633 /* load and store indexed -> dform. */
6634 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
6635 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
6636 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6637 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
6638 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
6640 insn = (58 << 26) | 2;
6647 /* If INSN is an opcode that may be used with an @tprel operand, return
6648 the transformed insn for an undefined weak symbol, ie. with the
6649 thread pointer REG operand removed. Otherwise return 0. */
6652 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
6654 if ((insn & (0x1f << 16)) == reg << 16
6655 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
6656 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
6657 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
6658 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
6659 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
6660 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
6661 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
6662 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
6663 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
6664 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
6665 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
6666 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
6667 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
6668 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
6669 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
6670 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
6672 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
6673 && ((insn & 3) == 0 || (insn & 3) == 3))))
6675 insn &= ~(0x1f << 16);
6677 else if ((insn & (0x1f << 21)) == reg << 21
6678 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
6679 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
6680 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
6682 insn &= ~(0x1f << 21);
6683 insn |= (insn & (0x1f << 16)) << 5;
6684 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
6685 insn -= 2 >> 26; /* convert to ori,oris */
6692 /* The RELOCATE_SECTION function is called by the ELF backend linker
6693 to handle the relocations for a section.
6695 The relocs are always passed as Rela structures; if the section
6696 actually uses Rel structures, the r_addend field will always be
6699 This function is responsible for adjust the section contents as
6700 necessary, and (if using Rela relocs and generating a
6701 relocatable output file) adjusting the reloc addend as
6704 This function does not have to worry about setting the reloc
6705 address or the reloc symbol index.
6707 LOCAL_SYMS is a pointer to the swapped in local symbols.
6709 LOCAL_SECTIONS is an array giving the section in the input file
6710 corresponding to the st_shndx field of each local symbol.
6712 The global hash table entry for the global symbols can be found
6713 via elf_sym_hashes (input_bfd).
6715 When generating relocatable output, this function must handle
6716 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6717 going to be the section symbol corresponding to the output
6718 section, which means that the addend must be adjusted
6722 ppc_elf_relocate_section (bfd *output_bfd,
6723 struct bfd_link_info *info,
6725 asection *input_section,
6727 Elf_Internal_Rela *relocs,
6728 Elf_Internal_Sym *local_syms,
6729 asection **local_sections)
6731 Elf_Internal_Shdr *symtab_hdr;
6732 struct elf_link_hash_entry **sym_hashes;
6733 struct ppc_elf_link_hash_table *htab;
6734 Elf_Internal_Rela *rel;
6735 Elf_Internal_Rela *relend;
6736 Elf_Internal_Rela outrel;
6737 asection *got2, *sreloc = NULL;
6738 bfd_vma *local_got_offsets;
6739 bfd_boolean ret = TRUE;
6740 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6741 bfd_boolean is_vxworks_tls;
6744 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6745 "%ld relocations%s",
6746 input_bfd, input_section,
6747 (long) input_section->reloc_count,
6748 (info->relocatable) ? " (relocatable)" : "");
6751 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6753 /* Initialize howto table if not already done. */
6754 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6755 ppc_elf_howto_init ();
6757 htab = ppc_elf_hash_table (info);
6758 local_got_offsets = elf_local_got_offsets (input_bfd);
6759 symtab_hdr = &elf_symtab_hdr (input_bfd);
6760 sym_hashes = elf_sym_hashes (input_bfd);
6761 /* We have to handle relocations in vxworks .tls_vars sections
6762 specially, because the dynamic loader is 'weird'. */
6763 is_vxworks_tls = (htab->is_vxworks && info->shared
6764 && !strcmp (input_section->output_section->name,
6767 relend = relocs + input_section->reloc_count;
6768 for (; rel < relend; rel++)
6770 enum elf_ppc_reloc_type r_type;
6772 bfd_reloc_status_type r;
6773 Elf_Internal_Sym *sym;
6775 struct elf_link_hash_entry *h;
6776 const char *sym_name;
6777 reloc_howto_type *howto;
6778 unsigned long r_symndx;
6780 bfd_vma branch_bit, from;
6781 bfd_boolean unresolved_reloc;
6783 unsigned int tls_type, tls_mask, tls_gd;
6784 struct plt_entry **ifunc;
6786 r_type = ELF32_R_TYPE (rel->r_info);
6790 unresolved_reloc = FALSE;
6792 r_symndx = ELF32_R_SYM (rel->r_info);
6794 if (r_symndx < symtab_hdr->sh_info)
6796 sym = local_syms + r_symndx;
6797 sec = local_sections[r_symndx];
6798 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6800 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6804 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6805 r_symndx, symtab_hdr, sym_hashes,
6807 unresolved_reloc, warned);
6809 sym_name = h->root.root.string;
6812 if (sec != NULL && elf_discarded_section (sec))
6814 /* For relocs against symbols from removed linkonce sections,
6815 or sections discarded by a linker script, we just want the
6816 section contents zeroed. Avoid any special processing. */
6818 if (r_type < R_PPC_max)
6819 howto = ppc_elf_howto_table[r_type];
6820 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6821 rel, relend, howto, contents);
6824 if (info->relocatable)
6827 && r_type == R_PPC_PLTREL24
6828 && rel->r_addend >= 32768)
6830 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6831 addend specifies the GOT pointer offset within .got2. */
6832 rel->r_addend += got2->output_offset;
6837 /* TLS optimizations. Replace instruction sequences and relocs
6838 based on information we collected in tls_optimize. We edit
6839 RELOCS so that --emit-relocs will output something sensible
6840 for the final instruction stream. */
6844 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6845 else if (local_got_offsets != NULL)
6847 struct plt_entry **local_plt;
6850 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6851 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
6852 tls_mask = lgot_masks[r_symndx];
6855 /* Ensure reloc mapping code below stays sane. */
6856 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6857 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6858 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6859 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6860 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6861 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6862 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6863 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6870 case R_PPC_GOT_TPREL16:
6871 case R_PPC_GOT_TPREL16_LO:
6872 if ((tls_mask & TLS_TLS) != 0
6873 && (tls_mask & TLS_TPREL) == 0)
6877 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6879 insn |= 0x3c020000; /* addis 0,2,0 */
6880 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6881 r_type = R_PPC_TPREL16_HA;
6882 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6887 if ((tls_mask & TLS_TLS) != 0
6888 && (tls_mask & TLS_TPREL) == 0)
6892 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6893 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
6896 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6897 r_type = R_PPC_TPREL16_LO;
6898 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6900 /* Was PPC_TLS which sits on insn boundary, now
6901 PPC_TPREL16_LO which is at low-order half-word. */
6902 rel->r_offset += d_offset;
6906 case R_PPC_GOT_TLSGD16_HI:
6907 case R_PPC_GOT_TLSGD16_HA:
6908 tls_gd = TLS_TPRELGD;
6909 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6913 case R_PPC_GOT_TLSLD16_HI:
6914 case R_PPC_GOT_TLSLD16_HA:
6915 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6918 if ((tls_mask & tls_gd) != 0)
6919 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6920 + R_PPC_GOT_TPREL16);
6923 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6924 rel->r_offset -= d_offset;
6925 r_type = R_PPC_NONE;
6927 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6931 case R_PPC_GOT_TLSGD16:
6932 case R_PPC_GOT_TLSGD16_LO:
6933 tls_gd = TLS_TPRELGD;
6934 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6938 case R_PPC_GOT_TLSLD16:
6939 case R_PPC_GOT_TLSLD16_LO:
6940 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6942 unsigned int insn1, insn2;
6946 offset = (bfd_vma) -1;
6947 /* If not using the newer R_PPC_TLSGD/LD to mark
6948 __tls_get_addr calls, we must trust that the call
6949 stays with its arg setup insns, ie. that the next
6950 reloc is the __tls_get_addr call associated with
6951 the current reloc. Edit both insns. */
6952 if (input_section->has_tls_get_addr_call
6954 && branch_reloc_hash_match (input_bfd, rel + 1,
6955 htab->tls_get_addr))
6956 offset = rel[1].r_offset;
6957 if ((tls_mask & tls_gd) != 0)
6960 insn1 = bfd_get_32 (output_bfd,
6961 contents + rel->r_offset - d_offset);
6962 insn1 &= (1 << 26) - 1;
6963 insn1 |= 32 << 26; /* lwz */
6964 if (offset != (bfd_vma) -1)
6966 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
6967 insn2 = 0x7c631214; /* add 3,3,2 */
6968 bfd_put_32 (output_bfd, insn2, contents + offset);
6970 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6971 + R_PPC_GOT_TPREL16);
6972 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6977 insn1 = 0x3c620000; /* addis 3,2,0 */
6980 /* Was an LD reloc. */
6982 r_symndx < symtab_hdr->sh_info;
6984 if (local_sections[r_symndx] == sec)
6986 if (r_symndx >= symtab_hdr->sh_info)
6987 r_symndx = STN_UNDEF;
6988 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6989 if (r_symndx != STN_UNDEF)
6990 rel->r_addend -= (local_syms[r_symndx].st_value
6991 + sec->output_offset
6992 + sec->output_section->vma);
6994 r_type = R_PPC_TPREL16_HA;
6995 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6996 if (offset != (bfd_vma) -1)
6998 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6999 rel[1].r_offset = offset + d_offset;
7000 rel[1].r_addend = rel->r_addend;
7001 insn2 = 0x38630000; /* addi 3,3,0 */
7002 bfd_put_32 (output_bfd, insn2, contents + offset);
7005 bfd_put_32 (output_bfd, insn1,
7006 contents + rel->r_offset - d_offset);
7009 /* We changed the symbol on an LD reloc. Start over
7010 in order to get h, sym, sec etc. right. */
7018 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7021 bfd_vma offset = rel->r_offset;
7023 if ((tls_mask & TLS_TPRELGD) != 0)
7026 r_type = R_PPC_NONE;
7027 insn2 = 0x7c631214; /* add 3,3,2 */
7032 r_type = R_PPC_TPREL16_LO;
7033 rel->r_offset += d_offset;
7034 insn2 = 0x38630000; /* addi 3,3,0 */
7036 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7037 bfd_put_32 (output_bfd, insn2, contents + offset);
7038 /* Zap the reloc on the _tls_get_addr call too. */
7039 BFD_ASSERT (offset == rel[1].r_offset);
7040 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7045 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7050 r_symndx < symtab_hdr->sh_info;
7052 if (local_sections[r_symndx] == sec)
7054 if (r_symndx >= symtab_hdr->sh_info)
7055 r_symndx = STN_UNDEF;
7056 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7057 if (r_symndx != STN_UNDEF)
7058 rel->r_addend -= (local_syms[r_symndx].st_value
7059 + sec->output_offset
7060 + sec->output_section->vma);
7062 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7063 rel->r_offset += d_offset;
7064 insn2 = 0x38630000; /* addi 3,3,0 */
7065 bfd_put_32 (output_bfd, insn2,
7066 contents + rel->r_offset - d_offset);
7067 /* Zap the reloc on the _tls_get_addr call too. */
7068 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7069 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7076 /* Handle other relocations that tweak non-addend part of insn. */
7083 /* Branch taken prediction relocations. */
7084 case R_PPC_ADDR14_BRTAKEN:
7085 case R_PPC_REL14_BRTAKEN:
7086 branch_bit = BRANCH_PREDICT_BIT;
7089 /* Branch not taken prediction relocations. */
7090 case R_PPC_ADDR14_BRNTAKEN:
7091 case R_PPC_REL14_BRNTAKEN:
7095 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7096 insn &= ~BRANCH_PREDICT_BIT;
7099 from = (rel->r_offset
7100 + input_section->output_offset
7101 + input_section->output_section->vma);
7103 /* Invert 'y' bit if not the default. */
7104 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7105 insn ^= BRANCH_PREDICT_BIT;
7107 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7113 if (!htab->is_vxworks)
7115 struct plt_entry *ent;
7119 if (h->type == STT_GNU_IFUNC)
7120 ifunc = &h->plt.plist;
7122 else if (local_got_offsets != NULL
7123 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7125 struct plt_entry **local_plt;
7127 local_plt = (struct plt_entry **) (local_got_offsets
7128 + symtab_hdr->sh_info);
7129 ifunc = local_plt + r_symndx;
7135 || is_branch_reloc (r_type)))
7138 if (r_type == R_PPC_PLTREL24 && info->shared)
7139 addend = rel->r_addend;
7140 ent = find_plt_ent (ifunc, got2, addend);
7144 if (h == NULL && (ent->plt.offset & 1) == 0)
7146 Elf_Internal_Rela rela;
7149 rela.r_offset = (htab->iplt->output_section->vma
7150 + htab->iplt->output_offset
7152 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7153 rela.r_addend = relocation;
7154 loc = htab->reliplt->contents;
7155 loc += (htab->reliplt->reloc_count++
7156 * sizeof (Elf32_External_Rela));
7157 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7159 ent->plt.offset |= 1;
7161 if (h == NULL && (ent->glink_offset & 1) == 0)
7163 unsigned char *p = ((unsigned char *) htab->glink->contents
7164 + ent->glink_offset);
7165 write_glink_stub (ent, htab->iplt, p, info);
7166 ent->glink_offset |= 1;
7169 unresolved_reloc = FALSE;
7170 if (htab->plt_type == PLT_NEW
7171 || !htab->elf.dynamic_sections_created
7173 relocation = (htab->glink->output_section->vma
7174 + htab->glink->output_offset
7175 + (ent->glink_offset & ~1));
7177 relocation = (htab->plt->output_section->vma
7178 + htab->plt->output_offset
7183 addend = rel->r_addend;
7186 if (r_type < R_PPC_max)
7187 howto = ppc_elf_howto_table[r_type];
7191 (*_bfd_error_handler)
7192 (_("%B: unknown relocation type %d for symbol %s"),
7193 input_bfd, (int) r_type, sym_name);
7195 bfd_set_error (bfd_error_bad_value);
7203 case R_PPC_EMB_MRKREF:
7204 case R_PPC_GNU_VTINHERIT:
7205 case R_PPC_GNU_VTENTRY:
7208 /* GOT16 relocations. Like an ADDR16 using the symbol's
7209 address in the GOT as relocation value instead of the
7210 symbol's value itself. Also, create a GOT entry for the
7211 symbol and put the symbol value there. */
7212 case R_PPC_GOT_TLSGD16:
7213 case R_PPC_GOT_TLSGD16_LO:
7214 case R_PPC_GOT_TLSGD16_HI:
7215 case R_PPC_GOT_TLSGD16_HA:
7216 tls_type = TLS_TLS | TLS_GD;
7219 case R_PPC_GOT_TLSLD16:
7220 case R_PPC_GOT_TLSLD16_LO:
7221 case R_PPC_GOT_TLSLD16_HI:
7222 case R_PPC_GOT_TLSLD16_HA:
7223 tls_type = TLS_TLS | TLS_LD;
7226 case R_PPC_GOT_TPREL16:
7227 case R_PPC_GOT_TPREL16_LO:
7228 case R_PPC_GOT_TPREL16_HI:
7229 case R_PPC_GOT_TPREL16_HA:
7230 tls_type = TLS_TLS | TLS_TPREL;
7233 case R_PPC_GOT_DTPREL16:
7234 case R_PPC_GOT_DTPREL16_LO:
7235 case R_PPC_GOT_DTPREL16_HI:
7236 case R_PPC_GOT_DTPREL16_HA:
7237 tls_type = TLS_TLS | TLS_DTPREL;
7241 case R_PPC_GOT16_LO:
7242 case R_PPC_GOT16_HI:
7243 case R_PPC_GOT16_HA:
7247 /* Relocation is to the entry for this symbol in the global
7253 if (htab->got == NULL)
7257 if (tls_type == (TLS_TLS | TLS_LD)
7259 || !h->def_dynamic))
7260 offp = &htab->tlsld_got.offset;
7264 dyn = htab->elf.dynamic_sections_created;
7265 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7267 && SYMBOL_REFERENCES_LOCAL (info, h)))
7268 /* This is actually a static link, or it is a
7269 -Bsymbolic link and the symbol is defined
7270 locally, or the symbol was forced to be local
7271 because of a version file. */
7276 unresolved_reloc = FALSE;
7278 offp = &h->got.offset;
7282 if (local_got_offsets == NULL)
7284 offp = &local_got_offsets[r_symndx];
7287 /* The offset must always be a multiple of 4. We use the
7288 least significant bit to record whether we have already
7289 processed this entry. */
7295 unsigned int tls_m = (tls_mask
7296 & (TLS_LD | TLS_GD | TLS_DTPREL
7297 | TLS_TPREL | TLS_TPRELGD));
7299 if (offp == &htab->tlsld_got.offset)
7305 /* We might have multiple got entries for this sym.
7306 Initialize them all. */
7311 if ((tls_m & TLS_LD) != 0)
7313 tls_ty = TLS_TLS | TLS_LD;
7316 else if ((tls_m & TLS_GD) != 0)
7318 tls_ty = TLS_TLS | TLS_GD;
7321 else if ((tls_m & TLS_DTPREL) != 0)
7323 tls_ty = TLS_TLS | TLS_DTPREL;
7324 tls_m &= ~TLS_DTPREL;
7326 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7328 tls_ty = TLS_TLS | TLS_TPREL;
7332 /* Generate relocs for the dynamic linker. */
7333 if ((info->shared || indx != 0)
7334 && (offp == &htab->tlsld_got.offset
7336 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7337 || h->root.type != bfd_link_hash_undefweak))
7339 asection *rsec = htab->relgot;
7342 outrel.r_offset = (htab->got->output_section->vma
7343 + htab->got->output_offset
7345 outrel.r_addend = 0;
7346 if (tls_ty & (TLS_LD | TLS_GD))
7348 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7349 if (tls_ty == (TLS_TLS | TLS_GD))
7351 loc = rsec->contents;
7352 loc += (rsec->reloc_count++
7353 * sizeof (Elf32_External_Rela));
7354 bfd_elf32_swap_reloca_out (output_bfd,
7356 outrel.r_offset += 4;
7358 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7361 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7362 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7363 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7364 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7366 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7367 else if (ifunc != NULL)
7368 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7370 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7371 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7373 outrel.r_addend += relocation;
7374 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7375 outrel.r_addend -= htab->elf.tls_sec->vma;
7377 loc = rsec->contents;
7378 loc += (rsec->reloc_count++
7379 * sizeof (Elf32_External_Rela));
7380 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7383 /* Init the .got section contents if we're not
7384 emitting a reloc. */
7387 bfd_vma value = relocation;
7389 if (tls_ty == (TLS_TLS | TLS_LD))
7391 else if (tls_ty != 0)
7393 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7394 if (tls_ty == (TLS_TLS | TLS_TPREL))
7395 value += DTP_OFFSET - TP_OFFSET;
7397 if (tls_ty == (TLS_TLS | TLS_GD))
7399 bfd_put_32 (output_bfd, value,
7400 htab->got->contents + off + 4);
7404 bfd_put_32 (output_bfd, value,
7405 htab->got->contents + off);
7409 if (tls_ty & (TLS_LD | TLS_GD))
7418 if (off >= (bfd_vma) -2)
7421 if ((tls_type & TLS_TLS) != 0)
7423 if (tls_type != (TLS_TLS | TLS_LD))
7425 if ((tls_mask & TLS_LD) != 0
7427 || !h->def_dynamic))
7429 if (tls_type != (TLS_TLS | TLS_GD))
7431 if ((tls_mask & TLS_GD) != 0)
7433 if (tls_type != (TLS_TLS | TLS_DTPREL))
7435 if ((tls_mask & TLS_DTPREL) != 0)
7442 relocation = (htab->got->output_section->vma
7443 + htab->got->output_offset
7445 - SYM_VAL (htab->elf.hgot));
7447 /* Addends on got relocations don't make much sense.
7448 x+off@got is actually x@got+off, and since the got is
7449 generated by a hash table traversal, the value in the
7450 got at entry m+n bears little relation to the entry m. */
7452 (*_bfd_error_handler)
7453 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
7456 (long) rel->r_offset,
7462 /* Relocations that need no special processing. */
7463 case R_PPC_LOCAL24PC:
7464 /* It makes no sense to point a local relocation
7465 at a symbol not in this object. */
7466 if (unresolved_reloc)
7468 if (! (*info->callbacks->undefined_symbol) (info,
7469 h->root.root.string,
7479 case R_PPC_DTPREL16:
7480 case R_PPC_DTPREL16_LO:
7481 case R_PPC_DTPREL16_HI:
7482 case R_PPC_DTPREL16_HA:
7483 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7486 /* Relocations that may need to be propagated if this is a shared
7489 case R_PPC_TPREL16_LO:
7490 case R_PPC_TPREL16_HI:
7491 case R_PPC_TPREL16_HA:
7493 && h->root.type == bfd_link_hash_undefweak
7494 && h->dynindx == -1)
7496 /* Make this relocation against an undefined weak symbol
7497 resolve to zero. This is really just a tweak, since
7498 code using weak externs ought to check that they are
7499 defined before using them. */
7500 bfd_byte *p = contents + rel->r_offset - d_offset;
7501 unsigned int insn = bfd_get_32 (output_bfd, p);
7502 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
7504 bfd_put_32 (output_bfd, insn, p);
7507 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7508 /* The TPREL16 relocs shouldn't really be used in shared
7509 libs as they will result in DT_TEXTREL being set, but
7510 support them anyway. */
7514 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7517 case R_PPC_DTPREL32:
7518 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7521 case R_PPC_DTPMOD32:
7527 case R_PPC_REL16_LO:
7528 case R_PPC_REL16_HI:
7529 case R_PPC_REL16_HA:
7533 if (h == NULL || h == htab->elf.hgot)
7539 case R_PPC_ADDR16_LO:
7540 case R_PPC_ADDR16_HI:
7541 case R_PPC_ADDR16_HA:
7548 case R_PPC_REL14_BRTAKEN:
7549 case R_PPC_REL14_BRNTAKEN:
7550 /* If these relocations are not to a named symbol, they can be
7551 handled right here, no need to bother the dynamic linker. */
7552 if (SYMBOL_CALLS_LOCAL (info, h)
7553 || h == htab->elf.hgot)
7559 case R_PPC_ADDR14_BRTAKEN:
7560 case R_PPC_ADDR14_BRNTAKEN:
7561 if (h != NULL && !info->shared)
7566 if ((input_section->flags & SEC_ALLOC) == 0
7572 && ((h->root.type == bfd_link_hash_undefined
7573 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7574 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7575 || (h->root.type == bfd_link_hash_undefweak
7576 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
7577 && (must_be_dyn_reloc (info, r_type)
7578 || !SYMBOL_CALLS_LOCAL (info, h)))
7579 || (ELIMINATE_COPY_RELOCS
7584 && !h->def_regular))
7589 fprintf (stderr, "ppc_elf_relocate_section needs to "
7590 "create relocation for %s\n",
7591 (h && h->root.root.string
7592 ? h->root.root.string : "<unknown>"));
7595 /* When generating a shared object, these relocations
7596 are copied into the output file to be resolved at run
7600 sreloc = elf_section_data (input_section)->sreloc;
7601 if (!htab->elf.dynamic_sections_created)
7602 sreloc = htab->reliplt;
7608 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
7611 if (outrel.r_offset == (bfd_vma) -1
7612 || outrel.r_offset == (bfd_vma) -2)
7613 skip = (int) outrel.r_offset;
7614 outrel.r_offset += (input_section->output_section->vma
7615 + input_section->output_offset);
7618 memset (&outrel, 0, sizeof outrel);
7620 && (h->root.type == bfd_link_hash_undefined
7621 || h->root.type == bfd_link_hash_undefweak))
7622 || !SYMBOL_REFERENCES_LOCAL (info, h))
7624 unresolved_reloc = FALSE;
7625 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7626 outrel.r_addend = rel->r_addend;
7630 outrel.r_addend = relocation + rel->r_addend;
7632 if (r_type != R_PPC_ADDR32)
7638 /* If we get here when building a static
7639 executable, then the libc startup function
7640 responsible for applying indirect function
7641 relocations is going to complain about
7643 If we get here when building a dynamic
7644 executable, it will be because we have
7645 a text relocation. The dynamic loader
7646 will set the text segment writable and
7647 non-executable to apply text relocations.
7648 So we'll segfault when trying to run the
7649 indirection function to resolve the reloc. */
7650 (*_bfd_error_handler)
7651 (_("%B(%A+0x%lx): relocation %s for indirect "
7652 "function %s unsupported"),
7655 (long) rel->r_offset,
7660 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
7662 else if (sec == NULL || sec->owner == NULL)
7664 bfd_set_error (bfd_error_bad_value);
7671 /* We are turning this relocation into one
7672 against a section symbol. It would be
7673 proper to subtract the symbol's value,
7674 osec->vma, from the emitted reloc addend,
7675 but ld.so expects buggy relocs.
7676 FIXME: Why not always use a zero index? */
7677 osec = sec->output_section;
7678 indx = elf_section_data (osec)->dynindx;
7681 osec = htab->elf.text_index_section;
7682 indx = elf_section_data (osec)->dynindx;
7684 BFD_ASSERT (indx != 0);
7687 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7688 indx, osec->name, osec->flags,
7689 h->root.root.string);
7693 outrel.r_info = ELF32_R_INFO (indx, r_type);
7695 else if (ifunc != NULL)
7696 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7698 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7701 loc = sreloc->contents;
7702 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7703 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7708 /* This reloc will be computed at runtime. We clear the memory
7709 so that it contains predictable value. */
7711 && ((input_section->flags & SEC_ALLOC) != 0
7712 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7714 relocation = howto->pc_relative ? outrel.r_offset : 0;
7721 case R_PPC_RELAX_PLT:
7722 case R_PPC_RELAX_PLTREL24:
7725 struct plt_entry *ent;
7726 bfd_vma got2_addend = 0;
7728 if (r_type == R_PPC_RELAX_PLTREL24)
7731 got2_addend = addend;
7734 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
7735 if (htab->plt_type == PLT_NEW)
7736 relocation = (htab->glink->output_section->vma
7737 + htab->glink->output_offset
7738 + ent->glink_offset);
7740 relocation = (htab->plt->output_section->vma
7741 + htab->plt->output_offset
7748 relocation -= (input_section->output_section->vma
7749 + input_section->output_offset
7750 + rel->r_offset - 4);
7756 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7757 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7759 /* We're clearing the bits for R_PPC_ADDR16_HA
7760 and R_PPC_ADDR16_LO here. */
7764 /* t0 is HA, t1 is LO */
7765 relocation += addend;
7766 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7767 t1 |= relocation & 0xffff;
7769 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7770 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
7772 /* Rewrite the reloc and convert one of the trailing nop
7773 relocs to describe this relocation. */
7774 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7775 /* The relocs are at the bottom 2 bytes */
7776 rel[0].r_offset += 2;
7777 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7778 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7779 rel[1].r_offset += 4;
7780 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7785 /* Indirect .sdata relocation. */
7786 case R_PPC_EMB_SDAI16:
7787 BFD_ASSERT (htab->sdata[0].section != NULL);
7788 if (!is_static_defined (htab->sdata[0].sym))
7790 unresolved_reloc = TRUE;
7794 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7795 h, relocation, rel);
7799 /* Indirect .sdata2 relocation. */
7800 case R_PPC_EMB_SDA2I16:
7801 BFD_ASSERT (htab->sdata[1].section != NULL);
7802 if (!is_static_defined (htab->sdata[1].sym))
7804 unresolved_reloc = TRUE;
7808 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7809 h, relocation, rel);
7813 /* Handle the TOC16 reloc. We want to use the offset within the .got
7814 section, not the actual VMA. This is appropriate when generating
7815 an embedded ELF object, for which the .got section acts like the
7816 AIX .toc section. */
7817 case R_PPC_TOC16: /* phony GOT16 relocations */
7818 if (sec == NULL || sec->output_section == NULL)
7820 unresolved_reloc = TRUE;
7823 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7824 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7826 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7829 case R_PPC_PLTREL24:
7830 if (h == NULL || ifunc != NULL)
7832 /* Relocation is to the entry for this symbol in the
7833 procedure linkage table. */
7835 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7836 info->shared ? addend : 0);
7839 || htab->plt == NULL)
7841 /* We didn't make a PLT entry for this symbol. This
7842 happens when statically linking PIC code, or when
7843 using -Bsymbolic. */
7847 unresolved_reloc = FALSE;
7848 if (htab->plt_type == PLT_NEW)
7849 relocation = (htab->glink->output_section->vma
7850 + htab->glink->output_offset
7851 + ent->glink_offset);
7853 relocation = (htab->plt->output_section->vma
7854 + htab->plt->output_offset
7859 /* Relocate against _SDA_BASE_. */
7860 case R_PPC_SDAREL16:
7863 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
7866 || sec->output_section == NULL
7867 || !is_static_defined (sda))
7869 unresolved_reloc = TRUE;
7872 addend -= SYM_VAL (sda);
7874 name = bfd_get_section_name (abfd, sec->output_section);
7875 if (! ((CONST_STRNEQ (name, ".sdata")
7876 && (name[6] == 0 || name[6] == '.'))
7877 || (CONST_STRNEQ (name, ".sbss")
7878 && (name[5] == 0 || name[5] == '.'))))
7880 (*_bfd_error_handler)
7881 (_("%B: the target (%s) of a %s relocation is "
7882 "in the wrong output section (%s)"),
7891 /* Relocate against _SDA2_BASE_. */
7892 case R_PPC_EMB_SDA2REL:
7895 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
7898 || sec->output_section == NULL
7899 || !is_static_defined (sda))
7901 unresolved_reloc = TRUE;
7904 addend -= SYM_VAL (sda);
7906 name = bfd_get_section_name (abfd, sec->output_section);
7907 if (! (CONST_STRNEQ (name, ".sdata2")
7908 || CONST_STRNEQ (name, ".sbss2")))
7910 (*_bfd_error_handler)
7911 (_("%B: the target (%s) of a %s relocation is "
7912 "in the wrong output section (%s)"),
7921 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7922 case R_PPC_EMB_SDA21:
7923 case R_PPC_EMB_RELSDA:
7927 struct elf_link_hash_entry *sda = NULL;
7929 if (sec == NULL || sec->output_section == NULL)
7931 unresolved_reloc = TRUE;
7935 name = bfd_get_section_name (abfd, sec->output_section);
7936 if (((CONST_STRNEQ (name, ".sdata")
7937 && (name[6] == 0 || name[6] == '.'))
7938 || (CONST_STRNEQ (name, ".sbss")
7939 && (name[5] == 0 || name[5] == '.'))))
7942 sda = htab->sdata[0].sym;
7944 else if (CONST_STRNEQ (name, ".sdata2")
7945 || CONST_STRNEQ (name, ".sbss2"))
7948 sda = htab->sdata[1].sym;
7950 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7951 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7957 (*_bfd_error_handler)
7958 (_("%B: the target (%s) of a %s relocation is "
7959 "in the wrong output section (%s)"),
7965 bfd_set_error (bfd_error_bad_value);
7972 if (!is_static_defined (sda))
7974 unresolved_reloc = TRUE;
7977 addend -= SYM_VAL (sda);
7980 if (r_type == R_PPC_EMB_SDA21)
7982 bfd_vma insn; /* Fill in register field. */
7984 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7985 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7986 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7991 /* Relocate against the beginning of the section. */
7993 case R_PPC_SECTOFF_LO:
7994 case R_PPC_SECTOFF_HI:
7995 case R_PPC_SECTOFF_HA:
7996 if (sec == NULL || sec->output_section == NULL)
7998 unresolved_reloc = TRUE;
8001 addend -= sec->output_section->vma;
8004 /* Negative relocations. */
8005 case R_PPC_EMB_NADDR32:
8006 case R_PPC_EMB_NADDR16:
8007 case R_PPC_EMB_NADDR16_LO:
8008 case R_PPC_EMB_NADDR16_HI:
8009 case R_PPC_EMB_NADDR16_HA:
8010 addend -= 2 * relocation;
8014 case R_PPC_GLOB_DAT:
8015 case R_PPC_JMP_SLOT:
8016 case R_PPC_RELATIVE:
8017 case R_PPC_IRELATIVE:
8019 case R_PPC_PLTREL32:
8020 case R_PPC_PLT16_LO:
8021 case R_PPC_PLT16_HI:
8022 case R_PPC_PLT16_HA:
8024 case R_PPC_EMB_RELSEC16:
8025 case R_PPC_EMB_RELST_LO:
8026 case R_PPC_EMB_RELST_HI:
8027 case R_PPC_EMB_RELST_HA:
8028 case R_PPC_EMB_BIT_FLD:
8029 (*_bfd_error_handler)
8030 (_("%B: relocation %s is not yet supported for symbol %s."),
8035 bfd_set_error (bfd_error_invalid_operation);
8040 /* Do any further special processing. */
8046 case R_PPC_ADDR16_HA:
8047 case R_PPC_REL16_HA:
8048 case R_PPC_SECTOFF_HA:
8049 case R_PPC_TPREL16_HA:
8050 case R_PPC_DTPREL16_HA:
8051 case R_PPC_EMB_NADDR16_HA:
8052 case R_PPC_EMB_RELST_HA:
8053 /* It's just possible that this symbol is a weak symbol
8054 that's not actually defined anywhere. In that case,
8055 'sec' would be NULL, and we should leave the symbol
8056 alone (it will be set to zero elsewhere in the link). */
8061 case R_PPC_PLT16_HA:
8062 case R_PPC_GOT16_HA:
8063 case R_PPC_GOT_TLSGD16_HA:
8064 case R_PPC_GOT_TLSLD16_HA:
8065 case R_PPC_GOT_TPREL16_HA:
8066 case R_PPC_GOT_DTPREL16_HA:
8067 /* Add 0x10000 if sign bit in 0:15 is set.
8068 Bits 0:15 are not used. */
8074 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8075 "offset = %ld, addend = %ld\n",
8080 (long) rel->r_offset,
8084 if (unresolved_reloc
8085 && !((input_section->flags & SEC_DEBUGGING) != 0
8088 (*_bfd_error_handler)
8089 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
8092 (long) rel->r_offset,
8098 r = _bfd_final_link_relocate (howto,
8106 if (r != bfd_reloc_ok)
8108 if (r == bfd_reloc_overflow)
8113 && h->root.type == bfd_link_hash_undefweak
8114 && howto->pc_relative)
8116 /* Assume this is a call protected by other code that
8117 detect the symbol is undefined. If this is the case,
8118 we can safely ignore the overflow. If not, the
8119 program is hosed anyway, and a little warning isn't
8125 if (! (*info->callbacks->reloc_overflow) (info,
8126 (h ? &h->root : NULL),
8137 (*_bfd_error_handler)
8138 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
8139 input_bfd, input_section,
8140 (long) rel->r_offset, howto->name, sym_name, (int) r);
8147 fprintf (stderr, "\n");
8153 /* Finish up dynamic symbol handling. We set the contents of various
8154 dynamic sections here. */
8157 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
8158 struct bfd_link_info *info,
8159 struct elf_link_hash_entry *h,
8160 Elf_Internal_Sym *sym)
8162 struct ppc_elf_link_hash_table *htab;
8163 struct plt_entry *ent;
8164 bfd_boolean doneone;
8167 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
8168 h->root.root.string);
8171 htab = ppc_elf_hash_table (info);
8172 BFD_ASSERT (htab->elf.dynobj != NULL);
8175 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8176 if (ent->plt.offset != (bfd_vma) -1)
8180 Elf_Internal_Rela rela;
8182 bfd_vma reloc_index;
8184 if (htab->plt_type == PLT_NEW
8185 || !htab->elf.dynamic_sections_created
8186 || h->dynindx == -1)
8187 reloc_index = ent->plt.offset / 4;
8190 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
8191 / htab->plt_slot_size);
8192 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
8193 && htab->plt_type == PLT_OLD)
8194 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
8197 /* This symbol has an entry in the procedure linkage table.
8199 if (htab->plt_type == PLT_VXWORKS
8200 && htab->elf.dynamic_sections_created
8201 && h->dynindx != -1)
8204 const bfd_vma *plt_entry;
8206 /* The first three entries in .got.plt are reserved. */
8207 got_offset = (reloc_index + 3) * 4;
8209 /* Use the right PLT. */
8210 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8211 : ppc_elf_vxworks_plt_entry;
8213 /* Fill in the .plt on VxWorks. */
8216 bfd_put_32 (output_bfd,
8217 plt_entry[0] | PPC_HA (got_offset),
8218 htab->plt->contents + ent->plt.offset + 0);
8219 bfd_put_32 (output_bfd,
8220 plt_entry[1] | PPC_LO (got_offset),
8221 htab->plt->contents + ent->plt.offset + 4);
8225 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
8227 bfd_put_32 (output_bfd,
8228 plt_entry[0] | PPC_HA (got_loc),
8229 htab->plt->contents + ent->plt.offset + 0);
8230 bfd_put_32 (output_bfd,
8231 plt_entry[1] | PPC_LO (got_loc),
8232 htab->plt->contents + ent->plt.offset + 4);
8235 bfd_put_32 (output_bfd, plt_entry[2],
8236 htab->plt->contents + ent->plt.offset + 8);
8237 bfd_put_32 (output_bfd, plt_entry[3],
8238 htab->plt->contents + ent->plt.offset + 12);
8240 /* This instruction is an immediate load. The value loaded is
8241 the byte offset of the R_PPC_JMP_SLOT relocation from the
8242 start of the .rela.plt section. The value is stored in the
8243 low-order 16 bits of the load instruction. */
8244 /* NOTE: It appears that this is now an index rather than a
8245 prescaled offset. */
8246 bfd_put_32 (output_bfd,
8247 plt_entry[4] | reloc_index,
8248 htab->plt->contents + ent->plt.offset + 16);
8249 /* This instruction is a PC-relative branch whose target is
8250 the start of the PLT section. The address of this branch
8251 instruction is 20 bytes beyond the start of this PLT entry.
8252 The address is encoded in bits 6-29, inclusive. The value
8253 stored is right-shifted by two bits, permitting a 26-bit
8255 bfd_put_32 (output_bfd,
8257 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8258 htab->plt->contents + ent->plt.offset + 20);
8259 bfd_put_32 (output_bfd, plt_entry[6],
8260 htab->plt->contents + ent->plt.offset + 24);
8261 bfd_put_32 (output_bfd, plt_entry[7],
8262 htab->plt->contents + ent->plt.offset + 28);
8264 /* Fill in the GOT entry corresponding to this PLT slot with
8265 the address immediately after the the "bctr" instruction
8266 in this PLT entry. */
8267 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8268 + htab->plt->output_offset
8269 + ent->plt.offset + 16),
8270 htab->sgotplt->contents + got_offset);
8274 /* Fill in a couple of entries in .rela.plt.unloaded. */
8275 loc = htab->srelplt2->contents
8276 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8277 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8278 * sizeof (Elf32_External_Rela));
8280 /* Provide the @ha relocation for the first instruction. */
8281 rela.r_offset = (htab->plt->output_section->vma
8282 + htab->plt->output_offset
8283 + ent->plt.offset + 2);
8284 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8286 rela.r_addend = got_offset;
8287 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8288 loc += sizeof (Elf32_External_Rela);
8290 /* Provide the @l relocation for the second instruction. */
8291 rela.r_offset = (htab->plt->output_section->vma
8292 + htab->plt->output_offset
8293 + ent->plt.offset + 6);
8294 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8296 rela.r_addend = got_offset;
8297 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8298 loc += sizeof (Elf32_External_Rela);
8300 /* Provide a relocation for the GOT entry corresponding to this
8301 PLT slot. Point it at the middle of the .plt entry. */
8302 rela.r_offset = (htab->sgotplt->output_section->vma
8303 + htab->sgotplt->output_offset
8305 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
8307 rela.r_addend = ent->plt.offset + 16;
8308 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8311 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8312 In particular, the offset for the relocation is not the
8313 address of the PLT entry for this function, as specified
8314 by the ABI. Instead, the offset is set to the address of
8315 the GOT slot for this function. See EABI 4.4.4.1. */
8316 rela.r_offset = (htab->sgotplt->output_section->vma
8317 + htab->sgotplt->output_offset
8323 asection *splt = htab->plt;
8324 if (!htab->elf.dynamic_sections_created
8325 || h->dynindx == -1)
8328 rela.r_offset = (splt->output_section->vma
8329 + splt->output_offset
8331 if (htab->plt_type == PLT_OLD
8332 || !htab->elf.dynamic_sections_created
8333 || h->dynindx == -1)
8335 /* We don't need to fill in the .plt. The ppc dynamic
8336 linker will fill it in. */
8340 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8341 + htab->glink->output_section->vma
8342 + htab->glink->output_offset);
8343 bfd_put_32 (output_bfd, val,
8344 splt->contents + ent->plt.offset);
8348 /* Fill in the entry in the .rela.plt section. */
8350 if (!htab->elf.dynamic_sections_created
8351 || h->dynindx == -1)
8353 BFD_ASSERT (h->type == STT_GNU_IFUNC
8355 && (h->root.type == bfd_link_hash_defined
8356 || h->root.type == bfd_link_hash_defweak));
8357 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8358 rela.r_addend = SYM_VAL (h);
8361 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
8363 if (!htab->elf.dynamic_sections_created
8364 || h->dynindx == -1)
8365 loc = (htab->reliplt->contents
8366 + (htab->reliplt->reloc_count++
8367 * sizeof (Elf32_External_Rela)));
8369 loc = (htab->relplt->contents
8370 + reloc_index * sizeof (Elf32_External_Rela));
8371 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8373 if (!h->def_regular)
8375 /* Mark the symbol as undefined, rather than as
8376 defined in the .plt section. Leave the value if
8377 there were any relocations where pointer equality
8378 matters (this is a clue for the dynamic linker, to
8379 make function pointer comparisons work between an
8380 application and shared library), otherwise set it
8382 sym->st_shndx = SHN_UNDEF;
8383 if (!h->pointer_equality_needed)
8385 else if (!h->ref_regular_nonweak)
8387 /* This breaks function pointer comparisons, but
8388 that is better than breaking tests for a NULL
8389 function pointer. */
8393 else if (h->type == STT_GNU_IFUNC
8396 /* Set the value of ifunc symbols in a non-pie
8397 executable to the glink entry. This is to avoid
8398 text relocations. We can't do this for ifunc in
8399 allocate_dynrelocs, as we do for normal dynamic
8400 function symbols with plt entries, because we need
8401 to keep the original value around for the ifunc
8403 sym->st_shndx = (_bfd_elf_section_from_bfd_section
8404 (output_bfd, htab->glink->output_section));
8405 sym->st_value = (ent->glink_offset
8406 + htab->glink->output_offset
8407 + htab->glink->output_section->vma);
8412 if (htab->plt_type == PLT_NEW
8413 || !htab->elf.dynamic_sections_created
8414 || h->dynindx == -1)
8417 asection *splt = htab->plt;
8418 if (!htab->elf.dynamic_sections_created
8419 || h->dynindx == -1)
8422 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
8424 if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
8426 bfd_put_32 (output_bfd, LWZ_11_3, p);
8428 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
8430 bfd_put_32 (output_bfd, MR_0_3, p);
8432 bfd_put_32 (output_bfd, CMPWI_11_0, p);
8434 bfd_put_32 (output_bfd, ADD_3_12_2, p);
8436 bfd_put_32 (output_bfd, BEQLR, p);
8438 bfd_put_32 (output_bfd, MR_3_0, p);
8440 bfd_put_32 (output_bfd, NOP, p);
8444 write_glink_stub (ent, splt, p, info);
8447 /* We only need one non-PIC glink stub. */
8457 Elf_Internal_Rela rela;
8460 /* This symbols needs a copy reloc. Set it up. */
8463 fprintf (stderr, ", copy");
8466 BFD_ASSERT (h->dynindx != -1);
8468 if (ppc_elf_hash_entry (h)->has_sda_refs)
8472 BFD_ASSERT (s != NULL);
8474 rela.r_offset = SYM_VAL (h);
8475 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8477 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8478 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8482 fprintf (stderr, "\n");
8485 /* Mark some specially defined symbols as absolute. */
8486 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8487 || (!htab->is_vxworks
8488 && (h == htab->elf.hgot
8489 || strcmp (h->root.root.string,
8490 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
8491 sym->st_shndx = SHN_ABS;
8496 static enum elf_reloc_type_class
8497 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8499 switch (ELF32_R_TYPE (rela->r_info))
8501 case R_PPC_RELATIVE:
8502 return reloc_class_relative;
8505 case R_PPC_JMP_SLOT:
8506 return reloc_class_plt;
8508 return reloc_class_copy;
8510 return reloc_class_normal;
8514 /* Finish up the dynamic sections. */
8517 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8518 struct bfd_link_info *info)
8522 struct ppc_elf_link_hash_table *htab;
8525 bfd_boolean ret = TRUE;
8528 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8531 htab = ppc_elf_hash_table (info);
8532 dynobj = elf_hash_table (info)->dynobj;
8533 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8534 if (htab->is_vxworks)
8535 splt = bfd_get_section_by_name (dynobj, ".plt");
8540 if (htab->elf.hgot != NULL)
8541 got = SYM_VAL (htab->elf.hgot);
8543 if (htab->elf.dynamic_sections_created)
8545 Elf32_External_Dyn *dyncon, *dynconend;
8547 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
8549 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8550 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8551 for (; dyncon < dynconend; dyncon++)
8553 Elf_Internal_Dyn dyn;
8556 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
8561 if (htab->is_vxworks)
8565 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8569 dyn.d_un.d_val = htab->relplt->size;
8574 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8578 dyn.d_un.d_ptr = got;
8582 if (htab->is_vxworks)
8585 dyn.d_un.d_ptr -= htab->relplt->size;
8591 if (htab->is_vxworks
8592 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8597 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8601 if (htab->got != NULL)
8603 if (htab->elf.hgot->root.u.def.section == htab->got
8604 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
8606 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
8608 p += htab->elf.hgot->root.u.def.value;
8609 if (htab->plt_type == PLT_OLD)
8611 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8612 so that a function can easily find the address of
8613 _GLOBAL_OFFSET_TABLE_. */
8614 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8615 < htab->elf.hgot->root.u.def.section->size);
8616 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8621 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8622 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8623 < htab->elf.hgot->root.u.def.section->size);
8624 bfd_put_32 (output_bfd, val, p);
8629 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
8630 htab->elf.hgot->root.root.string,
8631 (htab->sgotplt != NULL
8632 ? htab->sgotplt->name : htab->got->name));
8633 bfd_set_error (bfd_error_bad_value);
8637 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8640 /* Fill in the first entry in the VxWorks procedure linkage table. */
8641 if (splt && splt->size > 0)
8643 /* Use the right PLT. */
8644 const bfd_vma *plt_entry = (info->shared
8645 ? ppc_elf_vxworks_pic_plt0_entry
8646 : ppc_elf_vxworks_plt0_entry);
8650 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
8652 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
8653 splt->contents + 0);
8654 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
8655 splt->contents + 4);
8659 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8660 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8662 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8663 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8664 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8665 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8666 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8667 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8671 Elf_Internal_Rela rela;
8674 loc = htab->srelplt2->contents;
8676 /* Output the @ha relocation for the first instruction. */
8677 rela.r_offset = (htab->plt->output_section->vma
8678 + htab->plt->output_offset
8680 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8682 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8683 loc += sizeof (Elf32_External_Rela);
8685 /* Output the @l relocation for the second instruction. */
8686 rela.r_offset = (htab->plt->output_section->vma
8687 + htab->plt->output_offset
8689 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8691 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8692 loc += sizeof (Elf32_External_Rela);
8694 /* Fix up the remaining relocations. They may have the wrong
8695 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8696 in which symbols were output. */
8697 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8699 Elf_Internal_Rela rel;
8701 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8702 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8703 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8704 loc += sizeof (Elf32_External_Rela);
8706 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8707 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8708 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8709 loc += sizeof (Elf32_External_Rela);
8711 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8712 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
8713 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8714 loc += sizeof (Elf32_External_Rela);
8719 if (htab->glink != NULL
8720 && htab->glink->contents != NULL
8721 && htab->elf.dynamic_sections_created)
8724 unsigned char *endp;
8729 * PIC glink code is the following:
8731 * # ith PLT code stub.
8732 * addis 11,30,(plt+(i-1)*4-got)@ha
8733 * lwz 11,(plt+(i-1)*4-got)@l(11)
8737 * # A table of branches, one for each plt entry.
8738 * # The idea is that the plt call stub loads ctr and r11 with these
8739 * # addresses, so (r11 - res_0) gives the plt index * 4.
8740 * res_0: b PLTresolve
8741 * res_1: b PLTresolve
8743 * # Some number of entries towards the end can be nops
8749 * addis 11,11,(1f-res_0)@ha
8752 * 1: addi 11,11,(1b-res_0)@l
8755 * sub 11,11,12 # r11 = index * 4
8756 * addis 12,12,(got+4-1b)@ha
8757 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8758 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8761 * add 11,0,11 # r11 = index * 12 = reloc offset.
8764 static const unsigned int pic_plt_resolve[] =
8785 * Non-PIC glink code is a little simpler.
8787 * # ith PLT code stub.
8788 * lis 11,(plt+(i-1)*4)@ha
8789 * lwz 11,(plt+(i-1)*4)@l(11)
8793 * The branch table is the same, then comes
8797 * addis 11,11,(-res_0)@ha
8798 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8799 * addi 11,11,(-res_0)@l # r11 = index * 4
8802 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8803 * add 11,0,11 # r11 = index * 12 = reloc offset.
8806 static const unsigned int plt_resolve[] =
8826 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8828 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
8831 /* Build the branch table, one for each plt entry (less one),
8832 and perhaps some padding. */
8833 p = htab->glink->contents;
8834 p += htab->glink_pltresolve;
8835 endp = htab->glink->contents;
8836 endp += htab->glink->size - GLINK_PLTRESOLVE;
8837 while (p < endp - 8 * 4)
8839 bfd_put_32 (output_bfd, B + endp - p, p);
8844 bfd_put_32 (output_bfd, NOP, p);
8848 res0 = (htab->glink_pltresolve
8849 + htab->glink->output_section->vma
8850 + htab->glink->output_offset);
8852 /* Last comes the PLTresolve stub. */
8857 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8859 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8862 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8864 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8865 + htab->glink->output_section->vma
8866 + htab->glink->output_offset);
8868 bfd_put_32 (output_bfd,
8869 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8870 bfd_put_32 (output_bfd,
8871 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8872 bfd_put_32 (output_bfd,
8873 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8874 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8876 bfd_put_32 (output_bfd,
8877 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8878 bfd_put_32 (output_bfd,
8879 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8883 bfd_put_32 (output_bfd,
8884 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8885 bfd_put_32 (output_bfd,
8886 LWZ_12_12 + 4, p + 9*4);
8891 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8893 bfd_put_32 (output_bfd, plt_resolve[i], p);
8896 p -= 4 * ARRAY_SIZE (plt_resolve);
8898 bfd_put_32 (output_bfd,
8899 LIS_12 + PPC_HA (got + 4), p + 0*4);
8900 bfd_put_32 (output_bfd,
8901 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8902 bfd_put_32 (output_bfd,
8903 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8904 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8906 bfd_put_32 (output_bfd,
8907 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8908 bfd_put_32 (output_bfd,
8909 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8913 bfd_put_32 (output_bfd,
8914 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8915 bfd_put_32 (output_bfd,
8916 LWZ_12_12 + 4, p + 6*4);
8924 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8925 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8926 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8927 #define TARGET_BIG_NAME "elf32-powerpc"
8928 #define ELF_ARCH bfd_arch_powerpc
8929 #define ELF_TARGET_ID PPC32_ELF_DATA
8930 #define ELF_MACHINE_CODE EM_PPC
8931 #ifdef __QNXTARGET__
8932 #define ELF_MAXPAGESIZE 0x1000
8934 #define ELF_MAXPAGESIZE 0x10000
8936 #define ELF_MINPAGESIZE 0x1000
8937 #define ELF_COMMONPAGESIZE 0x1000
8938 #define elf_info_to_howto ppc_elf_info_to_howto
8940 #ifdef EM_CYGNUS_POWERPC
8941 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8945 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8948 #define elf_backend_plt_not_loaded 1
8949 #define elf_backend_can_gc_sections 1
8950 #define elf_backend_can_refcount 1
8951 #define elf_backend_rela_normal 1
8953 #define bfd_elf32_mkobject ppc_elf_mkobject
8954 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8955 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8956 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8957 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8958 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8959 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8960 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8962 #define elf_backend_object_p ppc_elf_object_p
8963 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8964 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8965 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8966 #define elf_backend_relocate_section ppc_elf_relocate_section
8967 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8968 #define elf_backend_check_relocs ppc_elf_check_relocs
8969 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8970 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8971 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8972 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8973 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8974 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8975 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8976 #define elf_backend_fake_sections ppc_elf_fake_sections
8977 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8978 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8979 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8980 #define elf_backend_write_core_note ppc_elf_write_core_note
8981 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8982 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8983 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8984 #define elf_backend_write_section ppc_elf_write_section
8985 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8986 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8987 #define elf_backend_action_discarded ppc_elf_action_discarded
8988 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8989 #define elf_backend_post_process_headers _bfd_elf_set_osabi
8991 #include "elf32-target.h"
8993 /* VxWorks Target */
8995 #undef TARGET_LITTLE_SYM
8996 #undef TARGET_LITTLE_NAME
8998 #undef TARGET_BIG_SYM
8999 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
9000 #undef TARGET_BIG_NAME
9001 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
9003 /* VxWorks uses the elf default section flags for .plt. */
9004 static const struct bfd_elf_special_section *
9005 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9007 if (sec->name == NULL)
9010 if (strcmp (sec->name, ".plt") == 0)
9011 return _bfd_elf_get_sec_type_attr (abfd, sec);
9013 return ppc_elf_get_sec_type_attr (abfd, sec);
9016 /* Like ppc_elf_link_hash_table_create, but overrides
9017 appropriately for VxWorks. */
9018 static struct bfd_link_hash_table *
9019 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
9021 struct bfd_link_hash_table *ret;
9023 ret = ppc_elf_link_hash_table_create (abfd);
9026 struct ppc_elf_link_hash_table *htab
9027 = (struct ppc_elf_link_hash_table *)ret;
9028 htab->is_vxworks = 1;
9029 htab->plt_type = PLT_VXWORKS;
9030 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
9031 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
9032 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
9037 /* Tweak magic VxWorks symbols as they are loaded. */
9039 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
9040 struct bfd_link_info *info,
9041 Elf_Internal_Sym *sym,
9042 const char **namep ATTRIBUTE_UNUSED,
9043 flagword *flagsp ATTRIBUTE_UNUSED,
9047 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
9051 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
9055 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
9057 ppc_elf_final_write_processing(abfd, linker);
9058 elf_vxworks_final_write_processing(abfd, linker);
9061 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
9063 #undef elf_backend_want_plt_sym
9064 #define elf_backend_want_plt_sym 1
9065 #undef elf_backend_want_got_plt
9066 #define elf_backend_want_got_plt 1
9067 #undef elf_backend_got_symbol_offset
9068 #define elf_backend_got_symbol_offset 0
9069 #undef elf_backend_plt_not_loaded
9070 #define elf_backend_plt_not_loaded 0
9071 #undef elf_backend_plt_readonly
9072 #define elf_backend_plt_readonly 1
9073 #undef elf_backend_got_header_size
9074 #define elf_backend_got_header_size 12
9076 #undef bfd_elf32_get_synthetic_symtab
9078 #undef bfd_elf32_bfd_link_hash_table_create
9079 #define bfd_elf32_bfd_link_hash_table_create \
9080 ppc_elf_vxworks_link_hash_table_create
9081 #undef elf_backend_add_symbol_hook
9082 #define elf_backend_add_symbol_hook \
9083 ppc_elf_vxworks_add_symbol_hook
9084 #undef elf_backend_link_output_symbol_hook
9085 #define elf_backend_link_output_symbol_hook \
9086 elf_vxworks_link_output_symbol_hook
9087 #undef elf_backend_final_write_processing
9088 #define elf_backend_final_write_processing \
9089 ppc_elf_vxworks_final_write_processing
9090 #undef elf_backend_get_sec_type_attr
9091 #define elf_backend_get_sec_type_attr \
9092 ppc_elf_vxworks_get_sec_type_attr
9093 #undef elf_backend_emit_relocs
9094 #define elf_backend_emit_relocs \
9095 elf_vxworks_emit_relocs
9098 #define elf32_bed ppc_elf_vxworks_bed
9099 #undef elf_backend_post_process_headers
9101 #include "elf32-target.h"
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