1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the
20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
24 /* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
36 #include "elf32-ppc.h"
37 #include "elf-vxworks.h"
39 /* RELA relocations are used here. */
41 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc_elf_unhandled_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 /* Branch prediction bit for branch taken relocs. */
47 #define BRANCH_PREDICT_BIT 0x200000
48 /* Mask to set RA in memory instructions. */
49 #define RA_REGISTER_MASK 0x001f0000
50 /* Value to shift register by to insert RA. */
51 #define RA_REGISTER_SHIFT 16
53 /* The name of the dynamic interpreter. This is put in the .interp
55 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
57 /* For old-style PLT. */
58 /* The number of single-slot PLT entries (the rest use two slots). */
59 #define PLT_NUM_SINGLE_ENTRIES 8192
61 /* For new-style .glink and .plt. */
62 #define GLINK_PLTRESOLVE 16*4
63 #define GLINK_ENTRY_SIZE 4*4
64 #define TLS_GET_ADDR_GLINK_SIZE 12*4
66 /* VxWorks uses its own plt layout, filled in by the static linker. */
68 /* The standard VxWorks PLT entry. */
69 #define VXWORKS_PLT_ENTRY_SIZE 32
70 static const bfd_vma ppc_elf_vxworks_plt_entry
71 [VXWORKS_PLT_ENTRY_SIZE / 4] =
73 0x3d800000, /* lis r12,0 */
74 0x818c0000, /* lwz r12,0(r12) */
75 0x7d8903a6, /* mtctr r12 */
76 0x4e800420, /* bctr */
77 0x39600000, /* li r11,0 */
78 0x48000000, /* b 14 <.PLT0resolve+0x4> */
82 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
83 [VXWORKS_PLT_ENTRY_SIZE / 4] =
85 0x3d9e0000, /* addis r12,r30,0 */
86 0x818c0000, /* lwz r12,0(r12) */
87 0x7d8903a6, /* mtctr r12 */
88 0x4e800420, /* bctr */
89 0x39600000, /* li r11,0 */
90 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
95 /* The initial VxWorks PLT entry. */
96 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
97 static const bfd_vma ppc_elf_vxworks_plt0_entry
98 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
100 0x3d800000, /* lis r12,0 */
101 0x398c0000, /* addi r12,r12,0 */
102 0x800c0008, /* lwz r0,8(r12) */
103 0x7c0903a6, /* mtctr r0 */
104 0x818c0004, /* lwz r12,4(r12) */
105 0x4e800420, /* bctr */
106 0x60000000, /* nop */
107 0x60000000, /* nop */
109 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
110 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
112 0x819e0008, /* lwz r12,8(r30) */
113 0x7d8903a6, /* mtctr r12 */
114 0x819e0004, /* lwz r12,4(r30) */
115 0x4e800420, /* bctr */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
119 0x60000000, /* nop */
122 /* For executables, we have some additional relocations in
123 .rela.plt.unloaded, for the kernel loader. */
125 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
126 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
127 /* The number of relocations in the PLTResolve slot. */
128 #define VXWORKS_PLTRESOLVE_RELOCS 2
129 /* The number of relocations in the PLTResolve slot when when creating
131 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
133 /* Some instructions. */
134 #define ADDIS_11_11 0x3d6b0000
135 #define ADDIS_11_30 0x3d7e0000
136 #define ADDIS_12_12 0x3d8c0000
137 #define ADDI_11_11 0x396b0000
138 #define ADD_0_11_11 0x7c0b5a14
139 #define ADD_3_12_2 0x7c6c1214
140 #define ADD_11_0_11 0x7d605a14
142 #define BCL_20_31 0x429f0005
143 #define BCTR 0x4e800420
144 #define BEQLR 0x4d820020
145 #define CMPWI_11_0 0x2c0b0000
146 #define LIS_11 0x3d600000
147 #define LIS_12 0x3d800000
148 #define LWZU_0_12 0x840c0000
149 #define LWZ_0_12 0x800c0000
150 #define LWZ_11_3 0x81630000
151 #define LWZ_11_11 0x816b0000
152 #define LWZ_11_30 0x817e0000
153 #define LWZ_12_3 0x81830000
154 #define LWZ_12_12 0x818c0000
155 #define MR_0_3 0x7c601b78
156 #define MR_3_0 0x7c030378
157 #define MFLR_0 0x7c0802a6
158 #define MFLR_12 0x7d8802a6
159 #define MTCTR_0 0x7c0903a6
160 #define MTCTR_11 0x7d6903a6
161 #define MTLR_0 0x7c0803a6
162 #define NOP 0x60000000
163 #define SUB_11_11_12 0x7d6c5850
165 /* Offset of tp and dtp pointers from start of TLS block. */
166 #define TP_OFFSET 0x7000
167 #define DTP_OFFSET 0x8000
169 /* The value of a defined global symbol. */
170 #define SYM_VAL(SYM) \
171 ((SYM)->root.u.def.section->output_section->vma \
172 + (SYM)->root.u.def.section->output_offset \
173 + (SYM)->root.u.def.value)
175 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
177 static reloc_howto_type ppc_elf_howto_raw[] = {
178 /* This reloc does nothing. */
179 HOWTO (R_PPC_NONE, /* type */
181 2, /* size (0 = byte, 1 = short, 2 = long) */
183 FALSE, /* pc_relative */
185 complain_overflow_bitfield, /* complain_on_overflow */
186 bfd_elf_generic_reloc, /* special_function */
187 "R_PPC_NONE", /* name */
188 FALSE, /* partial_inplace */
191 FALSE), /* pcrel_offset */
193 /* A standard 32 bit relocation. */
194 HOWTO (R_PPC_ADDR32, /* type */
196 2, /* size (0 = byte, 1 = short, 2 = long) */
198 FALSE, /* pc_relative */
200 complain_overflow_bitfield, /* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_PPC_ADDR32", /* name */
203 FALSE, /* partial_inplace */
205 0xffffffff, /* dst_mask */
206 FALSE), /* pcrel_offset */
208 /* An absolute 26 bit branch; the lower two bits must be zero.
209 FIXME: we don't check that, we just clear them. */
210 HOWTO (R_PPC_ADDR24, /* type */
212 2, /* size (0 = byte, 1 = short, 2 = long) */
214 FALSE, /* pc_relative */
216 complain_overflow_bitfield, /* complain_on_overflow */
217 bfd_elf_generic_reloc, /* special_function */
218 "R_PPC_ADDR24", /* name */
219 FALSE, /* partial_inplace */
221 0x3fffffc, /* dst_mask */
222 FALSE), /* pcrel_offset */
224 /* A standard 16 bit relocation. */
225 HOWTO (R_PPC_ADDR16, /* type */
227 1, /* size (0 = byte, 1 = short, 2 = long) */
229 FALSE, /* pc_relative */
231 complain_overflow_bitfield, /* complain_on_overflow */
232 bfd_elf_generic_reloc, /* special_function */
233 "R_PPC_ADDR16", /* name */
234 FALSE, /* partial_inplace */
236 0xffff, /* dst_mask */
237 FALSE), /* pcrel_offset */
239 /* A 16 bit relocation without overflow. */
240 HOWTO (R_PPC_ADDR16_LO, /* type */
242 1, /* size (0 = byte, 1 = short, 2 = long) */
244 FALSE, /* pc_relative */
246 complain_overflow_dont,/* complain_on_overflow */
247 bfd_elf_generic_reloc, /* special_function */
248 "R_PPC_ADDR16_LO", /* name */
249 FALSE, /* partial_inplace */
251 0xffff, /* dst_mask */
252 FALSE), /* pcrel_offset */
254 /* The high order 16 bits of an address. */
255 HOWTO (R_PPC_ADDR16_HI, /* type */
257 1, /* size (0 = byte, 1 = short, 2 = long) */
259 FALSE, /* pc_relative */
261 complain_overflow_dont, /* complain_on_overflow */
262 bfd_elf_generic_reloc, /* special_function */
263 "R_PPC_ADDR16_HI", /* name */
264 FALSE, /* partial_inplace */
266 0xffff, /* dst_mask */
267 FALSE), /* pcrel_offset */
269 /* The high order 16 bits of an address, plus 1 if the contents of
270 the low 16 bits, treated as a signed number, is negative. */
271 HOWTO (R_PPC_ADDR16_HA, /* type */
273 1, /* size (0 = byte, 1 = short, 2 = long) */
275 FALSE, /* pc_relative */
277 complain_overflow_dont, /* complain_on_overflow */
278 ppc_elf_addr16_ha_reloc, /* special_function */
279 "R_PPC_ADDR16_HA", /* name */
280 FALSE, /* partial_inplace */
282 0xffff, /* dst_mask */
283 FALSE), /* pcrel_offset */
285 /* An absolute 16 bit branch; the lower two bits must be zero.
286 FIXME: we don't check that, we just clear them. */
287 HOWTO (R_PPC_ADDR14, /* type */
289 2, /* size (0 = byte, 1 = short, 2 = long) */
291 FALSE, /* pc_relative */
293 complain_overflow_bitfield, /* complain_on_overflow */
294 bfd_elf_generic_reloc, /* special_function */
295 "R_PPC_ADDR14", /* name */
296 FALSE, /* partial_inplace */
298 0xfffc, /* dst_mask */
299 FALSE), /* pcrel_offset */
301 /* An absolute 16 bit branch, for which bit 10 should be set to
302 indicate that the branch is expected to be taken. The lower two
303 bits must be zero. */
304 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
306 2, /* size (0 = byte, 1 = short, 2 = long) */
308 FALSE, /* pc_relative */
310 complain_overflow_bitfield, /* complain_on_overflow */
311 bfd_elf_generic_reloc, /* special_function */
312 "R_PPC_ADDR14_BRTAKEN",/* name */
313 FALSE, /* partial_inplace */
315 0xfffc, /* dst_mask */
316 FALSE), /* pcrel_offset */
318 /* An absolute 16 bit branch, for which bit 10 should be set to
319 indicate that the branch is not expected to be taken. The lower
320 two bits must be zero. */
321 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
323 2, /* size (0 = byte, 1 = short, 2 = long) */
325 FALSE, /* pc_relative */
327 complain_overflow_bitfield, /* complain_on_overflow */
328 bfd_elf_generic_reloc, /* special_function */
329 "R_PPC_ADDR14_BRNTAKEN",/* name */
330 FALSE, /* partial_inplace */
332 0xfffc, /* dst_mask */
333 FALSE), /* pcrel_offset */
335 /* A relative 26 bit branch; the lower two bits must be zero. */
336 HOWTO (R_PPC_REL24, /* type */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
340 TRUE, /* pc_relative */
342 complain_overflow_signed, /* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_PPC_REL24", /* name */
345 FALSE, /* partial_inplace */
347 0x3fffffc, /* dst_mask */
348 TRUE), /* pcrel_offset */
350 /* A relative 16 bit branch; the lower two bits must be zero. */
351 HOWTO (R_PPC_REL14, /* type */
353 2, /* size (0 = byte, 1 = short, 2 = long) */
355 TRUE, /* pc_relative */
357 complain_overflow_signed, /* complain_on_overflow */
358 bfd_elf_generic_reloc, /* special_function */
359 "R_PPC_REL14", /* name */
360 FALSE, /* partial_inplace */
362 0xfffc, /* dst_mask */
363 TRUE), /* pcrel_offset */
365 /* A relative 16 bit branch. Bit 10 should be set to indicate that
366 the branch is expected to be taken. The lower two bits must be
368 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
372 TRUE, /* pc_relative */
374 complain_overflow_signed, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_PPC_REL14_BRTAKEN", /* name */
377 FALSE, /* partial_inplace */
379 0xfffc, /* dst_mask */
380 TRUE), /* pcrel_offset */
382 /* A relative 16 bit branch. Bit 10 should be set to indicate that
383 the branch is not expected to be taken. The lower two bits must
385 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
387 2, /* size (0 = byte, 1 = short, 2 = long) */
389 TRUE, /* pc_relative */
391 complain_overflow_signed, /* complain_on_overflow */
392 bfd_elf_generic_reloc, /* special_function */
393 "R_PPC_REL14_BRNTAKEN",/* name */
394 FALSE, /* partial_inplace */
396 0xfffc, /* dst_mask */
397 TRUE), /* pcrel_offset */
399 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
401 HOWTO (R_PPC_GOT16, /* type */
403 1, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE, /* pc_relative */
407 complain_overflow_signed, /* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_PPC_GOT16", /* name */
410 FALSE, /* partial_inplace */
412 0xffff, /* dst_mask */
413 FALSE), /* pcrel_offset */
415 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
417 HOWTO (R_PPC_GOT16_LO, /* type */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
421 FALSE, /* pc_relative */
423 complain_overflow_dont, /* complain_on_overflow */
424 bfd_elf_generic_reloc, /* special_function */
425 "R_PPC_GOT16_LO", /* name */
426 FALSE, /* partial_inplace */
428 0xffff, /* dst_mask */
429 FALSE), /* pcrel_offset */
431 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
433 HOWTO (R_PPC_GOT16_HI, /* type */
435 1, /* size (0 = byte, 1 = short, 2 = long) */
437 FALSE, /* pc_relative */
439 complain_overflow_bitfield, /* complain_on_overflow */
440 bfd_elf_generic_reloc, /* special_function */
441 "R_PPC_GOT16_HI", /* name */
442 FALSE, /* partial_inplace */
444 0xffff, /* dst_mask */
445 FALSE), /* pcrel_offset */
447 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
449 HOWTO (R_PPC_GOT16_HA, /* type */
451 1, /* size (0 = byte, 1 = short, 2 = long) */
453 FALSE, /* pc_relative */
455 complain_overflow_bitfield, /* complain_on_overflow */
456 ppc_elf_addr16_ha_reloc, /* special_function */
457 "R_PPC_GOT16_HA", /* name */
458 FALSE, /* partial_inplace */
460 0xffff, /* dst_mask */
461 FALSE), /* pcrel_offset */
463 /* Like R_PPC_REL24, but referring to the procedure linkage table
464 entry for the symbol. */
465 HOWTO (R_PPC_PLTREL24, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 TRUE, /* pc_relative */
471 complain_overflow_signed, /* complain_on_overflow */
472 bfd_elf_generic_reloc, /* special_function */
473 "R_PPC_PLTREL24", /* name */
474 FALSE, /* partial_inplace */
476 0x3fffffc, /* dst_mask */
477 TRUE), /* pcrel_offset */
479 /* This is used only by the dynamic linker. The symbol should exist
480 both in the object being run and in some shared library. The
481 dynamic linker copies the data addressed by the symbol from the
482 shared library into the object, because the object being
483 run has to have the data at some particular address. */
484 HOWTO (R_PPC_COPY, /* type */
486 2, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE, /* pc_relative */
490 complain_overflow_bitfield, /* complain_on_overflow */
491 bfd_elf_generic_reloc, /* special_function */
492 "R_PPC_COPY", /* name */
493 FALSE, /* partial_inplace */
496 FALSE), /* pcrel_offset */
498 /* Like R_PPC_ADDR32, but used when setting global offset table
500 HOWTO (R_PPC_GLOB_DAT, /* type */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE, /* pc_relative */
506 complain_overflow_bitfield, /* complain_on_overflow */
507 bfd_elf_generic_reloc, /* special_function */
508 "R_PPC_GLOB_DAT", /* name */
509 FALSE, /* partial_inplace */
511 0xffffffff, /* dst_mask */
512 FALSE), /* pcrel_offset */
514 /* Marks a procedure linkage table entry for a symbol. */
515 HOWTO (R_PPC_JMP_SLOT, /* type */
517 2, /* size (0 = byte, 1 = short, 2 = long) */
519 FALSE, /* pc_relative */
521 complain_overflow_bitfield, /* complain_on_overflow */
522 bfd_elf_generic_reloc, /* special_function */
523 "R_PPC_JMP_SLOT", /* name */
524 FALSE, /* partial_inplace */
527 FALSE), /* pcrel_offset */
529 /* Used only by the dynamic linker. When the object is run, this
530 longword is set to the load address of the object, plus the
532 HOWTO (R_PPC_RELATIVE, /* type */
534 2, /* size (0 = byte, 1 = short, 2 = long) */
536 FALSE, /* pc_relative */
538 complain_overflow_bitfield, /* complain_on_overflow */
539 bfd_elf_generic_reloc, /* special_function */
540 "R_PPC_RELATIVE", /* name */
541 FALSE, /* partial_inplace */
543 0xffffffff, /* dst_mask */
544 FALSE), /* pcrel_offset */
546 /* Like R_PPC_REL24, but uses the value of the symbol within the
547 object rather than the final value. Normally used for
548 _GLOBAL_OFFSET_TABLE_. */
549 HOWTO (R_PPC_LOCAL24PC, /* type */
551 2, /* size (0 = byte, 1 = short, 2 = long) */
553 TRUE, /* pc_relative */
555 complain_overflow_signed, /* complain_on_overflow */
556 bfd_elf_generic_reloc, /* special_function */
557 "R_PPC_LOCAL24PC", /* name */
558 FALSE, /* partial_inplace */
560 0x3fffffc, /* dst_mask */
561 TRUE), /* pcrel_offset */
563 /* Like R_PPC_ADDR32, but may be unaligned. */
564 HOWTO (R_PPC_UADDR32, /* type */
566 2, /* size (0 = byte, 1 = short, 2 = long) */
568 FALSE, /* pc_relative */
570 complain_overflow_bitfield, /* complain_on_overflow */
571 bfd_elf_generic_reloc, /* special_function */
572 "R_PPC_UADDR32", /* name */
573 FALSE, /* partial_inplace */
575 0xffffffff, /* dst_mask */
576 FALSE), /* pcrel_offset */
578 /* Like R_PPC_ADDR16, but may be unaligned. */
579 HOWTO (R_PPC_UADDR16, /* type */
581 1, /* size (0 = byte, 1 = short, 2 = long) */
583 FALSE, /* pc_relative */
585 complain_overflow_bitfield, /* complain_on_overflow */
586 bfd_elf_generic_reloc, /* special_function */
587 "R_PPC_UADDR16", /* name */
588 FALSE, /* partial_inplace */
590 0xffff, /* dst_mask */
591 FALSE), /* pcrel_offset */
593 /* 32-bit PC relative */
594 HOWTO (R_PPC_REL32, /* type */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
598 TRUE, /* pc_relative */
600 complain_overflow_bitfield, /* complain_on_overflow */
601 bfd_elf_generic_reloc, /* special_function */
602 "R_PPC_REL32", /* name */
603 FALSE, /* partial_inplace */
605 0xffffffff, /* dst_mask */
606 TRUE), /* pcrel_offset */
608 /* 32-bit relocation to the symbol's procedure linkage table.
609 FIXME: not supported. */
610 HOWTO (R_PPC_PLT32, /* type */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
614 FALSE, /* pc_relative */
616 complain_overflow_bitfield, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_PPC_PLT32", /* name */
619 FALSE, /* partial_inplace */
622 FALSE), /* pcrel_offset */
624 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
625 FIXME: not supported. */
626 HOWTO (R_PPC_PLTREL32, /* type */
628 2, /* size (0 = byte, 1 = short, 2 = long) */
630 TRUE, /* pc_relative */
632 complain_overflow_bitfield, /* complain_on_overflow */
633 bfd_elf_generic_reloc, /* special_function */
634 "R_PPC_PLTREL32", /* name */
635 FALSE, /* partial_inplace */
638 TRUE), /* pcrel_offset */
640 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
642 HOWTO (R_PPC_PLT16_LO, /* type */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
646 FALSE, /* pc_relative */
648 complain_overflow_dont, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC_PLT16_LO", /* name */
651 FALSE, /* partial_inplace */
653 0xffff, /* dst_mask */
654 FALSE), /* pcrel_offset */
656 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
658 HOWTO (R_PPC_PLT16_HI, /* type */
660 1, /* size (0 = byte, 1 = short, 2 = long) */
662 FALSE, /* pc_relative */
664 complain_overflow_bitfield, /* complain_on_overflow */
665 bfd_elf_generic_reloc, /* special_function */
666 "R_PPC_PLT16_HI", /* name */
667 FALSE, /* partial_inplace */
669 0xffff, /* dst_mask */
670 FALSE), /* pcrel_offset */
672 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
674 HOWTO (R_PPC_PLT16_HA, /* type */
676 1, /* size (0 = byte, 1 = short, 2 = long) */
678 FALSE, /* pc_relative */
680 complain_overflow_bitfield, /* complain_on_overflow */
681 ppc_elf_addr16_ha_reloc, /* special_function */
682 "R_PPC_PLT16_HA", /* name */
683 FALSE, /* partial_inplace */
685 0xffff, /* dst_mask */
686 FALSE), /* pcrel_offset */
688 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
690 HOWTO (R_PPC_SDAREL16, /* type */
692 1, /* size (0 = byte, 1 = short, 2 = long) */
694 FALSE, /* pc_relative */
696 complain_overflow_signed, /* complain_on_overflow */
697 bfd_elf_generic_reloc, /* special_function */
698 "R_PPC_SDAREL16", /* name */
699 FALSE, /* partial_inplace */
701 0xffff, /* dst_mask */
702 FALSE), /* pcrel_offset */
704 /* 16-bit section relative relocation. */
705 HOWTO (R_PPC_SECTOFF, /* type */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
709 FALSE, /* pc_relative */
711 complain_overflow_bitfield, /* complain_on_overflow */
712 bfd_elf_generic_reloc, /* special_function */
713 "R_PPC_SECTOFF", /* name */
714 FALSE, /* partial_inplace */
716 0xffff, /* dst_mask */
717 FALSE), /* pcrel_offset */
719 /* 16-bit lower half section relative relocation. */
720 HOWTO (R_PPC_SECTOFF_LO, /* type */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
724 FALSE, /* pc_relative */
726 complain_overflow_dont, /* complain_on_overflow */
727 bfd_elf_generic_reloc, /* special_function */
728 "R_PPC_SECTOFF_LO", /* name */
729 FALSE, /* partial_inplace */
731 0xffff, /* dst_mask */
732 FALSE), /* pcrel_offset */
734 /* 16-bit upper half section relative relocation. */
735 HOWTO (R_PPC_SECTOFF_HI, /* type */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
739 FALSE, /* pc_relative */
741 complain_overflow_bitfield, /* complain_on_overflow */
742 bfd_elf_generic_reloc, /* special_function */
743 "R_PPC_SECTOFF_HI", /* name */
744 FALSE, /* partial_inplace */
746 0xffff, /* dst_mask */
747 FALSE), /* pcrel_offset */
749 /* 16-bit upper half adjusted section relative relocation. */
750 HOWTO (R_PPC_SECTOFF_HA, /* type */
752 1, /* size (0 = byte, 1 = short, 2 = long) */
754 FALSE, /* pc_relative */
756 complain_overflow_bitfield, /* complain_on_overflow */
757 ppc_elf_addr16_ha_reloc, /* special_function */
758 "R_PPC_SECTOFF_HA", /* name */
759 FALSE, /* partial_inplace */
761 0xffff, /* dst_mask */
762 FALSE), /* pcrel_offset */
764 /* Marker relocs for TLS. */
767 2, /* size (0 = byte, 1 = short, 2 = long) */
769 FALSE, /* pc_relative */
771 complain_overflow_dont, /* complain_on_overflow */
772 bfd_elf_generic_reloc, /* special_function */
773 "R_PPC_TLS", /* name */
774 FALSE, /* partial_inplace */
777 FALSE), /* pcrel_offset */
781 2, /* size (0 = byte, 1 = short, 2 = long) */
783 FALSE, /* pc_relative */
785 complain_overflow_dont, /* complain_on_overflow */
786 bfd_elf_generic_reloc, /* special_function */
787 "R_PPC_TLSGD", /* name */
788 FALSE, /* partial_inplace */
791 FALSE), /* pcrel_offset */
795 2, /* size (0 = byte, 1 = short, 2 = long) */
797 FALSE, /* pc_relative */
799 complain_overflow_dont, /* complain_on_overflow */
800 bfd_elf_generic_reloc, /* special_function */
801 "R_PPC_TLSLD", /* name */
802 FALSE, /* partial_inplace */
805 FALSE), /* pcrel_offset */
807 /* Computes the load module index of the load module that contains the
808 definition of its TLS sym. */
809 HOWTO (R_PPC_DTPMOD32,
811 2, /* size (0 = byte, 1 = short, 2 = long) */
813 FALSE, /* pc_relative */
815 complain_overflow_dont, /* complain_on_overflow */
816 ppc_elf_unhandled_reloc, /* special_function */
817 "R_PPC_DTPMOD32", /* name */
818 FALSE, /* partial_inplace */
820 0xffffffff, /* dst_mask */
821 FALSE), /* pcrel_offset */
823 /* Computes a dtv-relative displacement, the difference between the value
824 of sym+add and the base address of the thread-local storage block that
825 contains the definition of sym, minus 0x8000. */
826 HOWTO (R_PPC_DTPREL32,
828 2, /* size (0 = byte, 1 = short, 2 = long) */
830 FALSE, /* pc_relative */
832 complain_overflow_dont, /* complain_on_overflow */
833 ppc_elf_unhandled_reloc, /* special_function */
834 "R_PPC_DTPREL32", /* name */
835 FALSE, /* partial_inplace */
837 0xffffffff, /* dst_mask */
838 FALSE), /* pcrel_offset */
840 /* A 16 bit dtprel reloc. */
841 HOWTO (R_PPC_DTPREL16,
843 1, /* size (0 = byte, 1 = short, 2 = long) */
845 FALSE, /* pc_relative */
847 complain_overflow_signed, /* complain_on_overflow */
848 ppc_elf_unhandled_reloc, /* special_function */
849 "R_PPC_DTPREL16", /* name */
850 FALSE, /* partial_inplace */
852 0xffff, /* dst_mask */
853 FALSE), /* pcrel_offset */
855 /* Like DTPREL16, but no overflow. */
856 HOWTO (R_PPC_DTPREL16_LO,
858 1, /* size (0 = byte, 1 = short, 2 = long) */
860 FALSE, /* pc_relative */
862 complain_overflow_dont, /* complain_on_overflow */
863 ppc_elf_unhandled_reloc, /* special_function */
864 "R_PPC_DTPREL16_LO", /* name */
865 FALSE, /* partial_inplace */
867 0xffff, /* dst_mask */
868 FALSE), /* pcrel_offset */
870 /* Like DTPREL16_LO, but next higher group of 16 bits. */
871 HOWTO (R_PPC_DTPREL16_HI,
873 1, /* size (0 = byte, 1 = short, 2 = long) */
875 FALSE, /* pc_relative */
877 complain_overflow_dont, /* complain_on_overflow */
878 ppc_elf_unhandled_reloc, /* special_function */
879 "R_PPC_DTPREL16_HI", /* name */
880 FALSE, /* partial_inplace */
882 0xffff, /* dst_mask */
883 FALSE), /* pcrel_offset */
885 /* Like DTPREL16_HI, but adjust for low 16 bits. */
886 HOWTO (R_PPC_DTPREL16_HA,
888 1, /* size (0 = byte, 1 = short, 2 = long) */
890 FALSE, /* pc_relative */
892 complain_overflow_dont, /* complain_on_overflow */
893 ppc_elf_unhandled_reloc, /* special_function */
894 "R_PPC_DTPREL16_HA", /* name */
895 FALSE, /* partial_inplace */
897 0xffff, /* dst_mask */
898 FALSE), /* pcrel_offset */
900 /* Computes a tp-relative displacement, the difference between the value of
901 sym+add and the value of the thread pointer (r13). */
902 HOWTO (R_PPC_TPREL32,
904 2, /* size (0 = byte, 1 = short, 2 = long) */
906 FALSE, /* pc_relative */
908 complain_overflow_dont, /* complain_on_overflow */
909 ppc_elf_unhandled_reloc, /* special_function */
910 "R_PPC_TPREL32", /* name */
911 FALSE, /* partial_inplace */
913 0xffffffff, /* dst_mask */
914 FALSE), /* pcrel_offset */
916 /* A 16 bit tprel reloc. */
917 HOWTO (R_PPC_TPREL16,
919 1, /* size (0 = byte, 1 = short, 2 = long) */
921 FALSE, /* pc_relative */
923 complain_overflow_signed, /* complain_on_overflow */
924 ppc_elf_unhandled_reloc, /* special_function */
925 "R_PPC_TPREL16", /* name */
926 FALSE, /* partial_inplace */
928 0xffff, /* dst_mask */
929 FALSE), /* pcrel_offset */
931 /* Like TPREL16, but no overflow. */
932 HOWTO (R_PPC_TPREL16_LO,
934 1, /* size (0 = byte, 1 = short, 2 = long) */
936 FALSE, /* pc_relative */
938 complain_overflow_dont, /* complain_on_overflow */
939 ppc_elf_unhandled_reloc, /* special_function */
940 "R_PPC_TPREL16_LO", /* name */
941 FALSE, /* partial_inplace */
943 0xffff, /* dst_mask */
944 FALSE), /* pcrel_offset */
946 /* Like TPREL16_LO, but next higher group of 16 bits. */
947 HOWTO (R_PPC_TPREL16_HI,
949 1, /* size (0 = byte, 1 = short, 2 = long) */
951 FALSE, /* pc_relative */
953 complain_overflow_dont, /* complain_on_overflow */
954 ppc_elf_unhandled_reloc, /* special_function */
955 "R_PPC_TPREL16_HI", /* name */
956 FALSE, /* partial_inplace */
958 0xffff, /* dst_mask */
959 FALSE), /* pcrel_offset */
961 /* Like TPREL16_HI, but adjust for low 16 bits. */
962 HOWTO (R_PPC_TPREL16_HA,
964 1, /* size (0 = byte, 1 = short, 2 = long) */
966 FALSE, /* pc_relative */
968 complain_overflow_dont, /* complain_on_overflow */
969 ppc_elf_unhandled_reloc, /* special_function */
970 "R_PPC_TPREL16_HA", /* name */
971 FALSE, /* partial_inplace */
973 0xffff, /* dst_mask */
974 FALSE), /* pcrel_offset */
976 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
977 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
978 to the first entry. */
979 HOWTO (R_PPC_GOT_TLSGD16,
981 1, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE, /* pc_relative */
985 complain_overflow_signed, /* complain_on_overflow */
986 ppc_elf_unhandled_reloc, /* special_function */
987 "R_PPC_GOT_TLSGD16", /* name */
988 FALSE, /* partial_inplace */
990 0xffff, /* dst_mask */
991 FALSE), /* pcrel_offset */
993 /* Like GOT_TLSGD16, but no overflow. */
994 HOWTO (R_PPC_GOT_TLSGD16_LO,
996 1, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE, /* pc_relative */
1000 complain_overflow_dont, /* complain_on_overflow */
1001 ppc_elf_unhandled_reloc, /* special_function */
1002 "R_PPC_GOT_TLSGD16_LO", /* name */
1003 FALSE, /* partial_inplace */
1005 0xffff, /* dst_mask */
1006 FALSE), /* pcrel_offset */
1008 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1009 HOWTO (R_PPC_GOT_TLSGD16_HI,
1010 16, /* rightshift */
1011 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 FALSE, /* pc_relative */
1015 complain_overflow_dont, /* complain_on_overflow */
1016 ppc_elf_unhandled_reloc, /* special_function */
1017 "R_PPC_GOT_TLSGD16_HI", /* name */
1018 FALSE, /* partial_inplace */
1020 0xffff, /* dst_mask */
1021 FALSE), /* pcrel_offset */
1023 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1024 HOWTO (R_PPC_GOT_TLSGD16_HA,
1025 16, /* rightshift */
1026 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 FALSE, /* pc_relative */
1030 complain_overflow_dont, /* complain_on_overflow */
1031 ppc_elf_unhandled_reloc, /* special_function */
1032 "R_PPC_GOT_TLSGD16_HA", /* name */
1033 FALSE, /* partial_inplace */
1035 0xffff, /* dst_mask */
1036 FALSE), /* pcrel_offset */
1038 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1039 with values (sym+add)@dtpmod and zero, and computes the offset to the
1041 HOWTO (R_PPC_GOT_TLSLD16,
1043 1, /* size (0 = byte, 1 = short, 2 = long) */
1045 FALSE, /* pc_relative */
1047 complain_overflow_signed, /* complain_on_overflow */
1048 ppc_elf_unhandled_reloc, /* special_function */
1049 "R_PPC_GOT_TLSLD16", /* name */
1050 FALSE, /* partial_inplace */
1052 0xffff, /* dst_mask */
1053 FALSE), /* pcrel_offset */
1055 /* Like GOT_TLSLD16, but no overflow. */
1056 HOWTO (R_PPC_GOT_TLSLD16_LO,
1058 1, /* size (0 = byte, 1 = short, 2 = long) */
1060 FALSE, /* pc_relative */
1062 complain_overflow_dont, /* complain_on_overflow */
1063 ppc_elf_unhandled_reloc, /* special_function */
1064 "R_PPC_GOT_TLSLD16_LO", /* name */
1065 FALSE, /* partial_inplace */
1067 0xffff, /* dst_mask */
1068 FALSE), /* pcrel_offset */
1070 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1071 HOWTO (R_PPC_GOT_TLSLD16_HI,
1072 16, /* rightshift */
1073 1, /* size (0 = byte, 1 = short, 2 = long) */
1075 FALSE, /* pc_relative */
1077 complain_overflow_dont, /* complain_on_overflow */
1078 ppc_elf_unhandled_reloc, /* special_function */
1079 "R_PPC_GOT_TLSLD16_HI", /* name */
1080 FALSE, /* partial_inplace */
1082 0xffff, /* dst_mask */
1083 FALSE), /* pcrel_offset */
1085 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1086 HOWTO (R_PPC_GOT_TLSLD16_HA,
1087 16, /* rightshift */
1088 1, /* size (0 = byte, 1 = short, 2 = long) */
1090 FALSE, /* pc_relative */
1092 complain_overflow_dont, /* complain_on_overflow */
1093 ppc_elf_unhandled_reloc, /* special_function */
1094 "R_PPC_GOT_TLSLD16_HA", /* name */
1095 FALSE, /* partial_inplace */
1097 0xffff, /* dst_mask */
1098 FALSE), /* pcrel_offset */
1100 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1101 the offset to the entry. */
1102 HOWTO (R_PPC_GOT_DTPREL16,
1104 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 FALSE, /* pc_relative */
1108 complain_overflow_signed, /* complain_on_overflow */
1109 ppc_elf_unhandled_reloc, /* special_function */
1110 "R_PPC_GOT_DTPREL16", /* name */
1111 FALSE, /* partial_inplace */
1113 0xffff, /* dst_mask */
1114 FALSE), /* pcrel_offset */
1116 /* Like GOT_DTPREL16, but no overflow. */
1117 HOWTO (R_PPC_GOT_DTPREL16_LO,
1119 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 FALSE, /* pc_relative */
1123 complain_overflow_dont, /* complain_on_overflow */
1124 ppc_elf_unhandled_reloc, /* special_function */
1125 "R_PPC_GOT_DTPREL16_LO", /* name */
1126 FALSE, /* partial_inplace */
1128 0xffff, /* dst_mask */
1129 FALSE), /* pcrel_offset */
1131 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1132 HOWTO (R_PPC_GOT_DTPREL16_HI,
1133 16, /* rightshift */
1134 1, /* size (0 = byte, 1 = short, 2 = long) */
1136 FALSE, /* pc_relative */
1138 complain_overflow_dont, /* complain_on_overflow */
1139 ppc_elf_unhandled_reloc, /* special_function */
1140 "R_PPC_GOT_DTPREL16_HI", /* name */
1141 FALSE, /* partial_inplace */
1143 0xffff, /* dst_mask */
1144 FALSE), /* pcrel_offset */
1146 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1147 HOWTO (R_PPC_GOT_DTPREL16_HA,
1148 16, /* rightshift */
1149 1, /* size (0 = byte, 1 = short, 2 = long) */
1151 FALSE, /* pc_relative */
1153 complain_overflow_dont, /* complain_on_overflow */
1154 ppc_elf_unhandled_reloc, /* special_function */
1155 "R_PPC_GOT_DTPREL16_HA", /* name */
1156 FALSE, /* partial_inplace */
1158 0xffff, /* dst_mask */
1159 FALSE), /* pcrel_offset */
1161 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1162 offset to the entry. */
1163 HOWTO (R_PPC_GOT_TPREL16,
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE, /* pc_relative */
1169 complain_overflow_signed, /* complain_on_overflow */
1170 ppc_elf_unhandled_reloc, /* special_function */
1171 "R_PPC_GOT_TPREL16", /* name */
1172 FALSE, /* partial_inplace */
1174 0xffff, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1177 /* Like GOT_TPREL16, but no overflow. */
1178 HOWTO (R_PPC_GOT_TPREL16_LO,
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE, /* pc_relative */
1184 complain_overflow_dont, /* complain_on_overflow */
1185 ppc_elf_unhandled_reloc, /* special_function */
1186 "R_PPC_GOT_TPREL16_LO", /* name */
1187 FALSE, /* partial_inplace */
1189 0xffff, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1192 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1193 HOWTO (R_PPC_GOT_TPREL16_HI,
1194 16, /* rightshift */
1195 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 FALSE, /* pc_relative */
1199 complain_overflow_dont, /* complain_on_overflow */
1200 ppc_elf_unhandled_reloc, /* special_function */
1201 "R_PPC_GOT_TPREL16_HI", /* name */
1202 FALSE, /* partial_inplace */
1204 0xffff, /* dst_mask */
1205 FALSE), /* pcrel_offset */
1207 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1208 HOWTO (R_PPC_GOT_TPREL16_HA,
1209 16, /* rightshift */
1210 1, /* size (0 = byte, 1 = short, 2 = long) */
1212 FALSE, /* pc_relative */
1214 complain_overflow_dont, /* complain_on_overflow */
1215 ppc_elf_unhandled_reloc, /* special_function */
1216 "R_PPC_GOT_TPREL16_HA", /* name */
1217 FALSE, /* partial_inplace */
1219 0xffff, /* dst_mask */
1220 FALSE), /* pcrel_offset */
1222 /* The remaining relocs are from the Embedded ELF ABI, and are not
1223 in the SVR4 ELF ABI. */
1225 /* 32 bit value resulting from the addend minus the symbol. */
1226 HOWTO (R_PPC_EMB_NADDR32, /* type */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 FALSE, /* pc_relative */
1232 complain_overflow_bitfield, /* complain_on_overflow */
1233 bfd_elf_generic_reloc, /* special_function */
1234 "R_PPC_EMB_NADDR32", /* name */
1235 FALSE, /* partial_inplace */
1237 0xffffffff, /* dst_mask */
1238 FALSE), /* pcrel_offset */
1240 /* 16 bit value resulting from the addend minus the symbol. */
1241 HOWTO (R_PPC_EMB_NADDR16, /* type */
1243 1, /* size (0 = byte, 1 = short, 2 = long) */
1245 FALSE, /* pc_relative */
1247 complain_overflow_bitfield, /* complain_on_overflow */
1248 bfd_elf_generic_reloc, /* special_function */
1249 "R_PPC_EMB_NADDR16", /* name */
1250 FALSE, /* partial_inplace */
1252 0xffff, /* dst_mask */
1253 FALSE), /* pcrel_offset */
1255 /* 16 bit value resulting from the addend minus the symbol. */
1256 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1258 1, /* size (0 = byte, 1 = short, 2 = long) */
1260 FALSE, /* pc_relative */
1262 complain_overflow_dont,/* complain_on_overflow */
1263 bfd_elf_generic_reloc, /* special_function */
1264 "R_PPC_EMB_ADDR16_LO", /* name */
1265 FALSE, /* partial_inplace */
1267 0xffff, /* dst_mask */
1268 FALSE), /* pcrel_offset */
1270 /* The high order 16 bits of the addend minus the symbol. */
1271 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1272 16, /* rightshift */
1273 1, /* size (0 = byte, 1 = short, 2 = long) */
1275 FALSE, /* pc_relative */
1277 complain_overflow_dont, /* complain_on_overflow */
1278 bfd_elf_generic_reloc, /* special_function */
1279 "R_PPC_EMB_NADDR16_HI", /* name */
1280 FALSE, /* partial_inplace */
1282 0xffff, /* dst_mask */
1283 FALSE), /* pcrel_offset */
1285 /* The high order 16 bits of the result of the addend minus the address,
1286 plus 1 if the contents of the low 16 bits, treated as a signed number,
1288 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1289 16, /* rightshift */
1290 1, /* size (0 = byte, 1 = short, 2 = long) */
1292 FALSE, /* pc_relative */
1294 complain_overflow_dont, /* complain_on_overflow */
1295 ppc_elf_addr16_ha_reloc, /* special_function */
1296 "R_PPC_EMB_NADDR16_HA", /* name */
1297 FALSE, /* partial_inplace */
1299 0xffff, /* dst_mask */
1300 FALSE), /* pcrel_offset */
1302 /* 16 bit value resulting from allocating a 4 byte word to hold an
1303 address in the .sdata section, and returning the offset from
1304 _SDA_BASE_ for that relocation. */
1305 HOWTO (R_PPC_EMB_SDAI16, /* type */
1307 1, /* size (0 = byte, 1 = short, 2 = long) */
1309 FALSE, /* pc_relative */
1311 complain_overflow_signed, /* complain_on_overflow */
1312 bfd_elf_generic_reloc, /* special_function */
1313 "R_PPC_EMB_SDAI16", /* name */
1314 FALSE, /* partial_inplace */
1316 0xffff, /* dst_mask */
1317 FALSE), /* pcrel_offset */
1319 /* 16 bit value resulting from allocating a 4 byte word to hold an
1320 address in the .sdata2 section, and returning the offset from
1321 _SDA2_BASE_ for that relocation. */
1322 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1324 1, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE, /* pc_relative */
1328 complain_overflow_signed, /* complain_on_overflow */
1329 bfd_elf_generic_reloc, /* special_function */
1330 "R_PPC_EMB_SDA2I16", /* name */
1331 FALSE, /* partial_inplace */
1333 0xffff, /* dst_mask */
1334 FALSE), /* pcrel_offset */
1336 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1337 small data items. */
1338 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1340 1, /* size (0 = byte, 1 = short, 2 = long) */
1342 FALSE, /* pc_relative */
1344 complain_overflow_signed, /* complain_on_overflow */
1345 bfd_elf_generic_reloc, /* special_function */
1346 "R_PPC_EMB_SDA2REL", /* name */
1347 FALSE, /* partial_inplace */
1349 0xffff, /* dst_mask */
1350 FALSE), /* pcrel_offset */
1352 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1353 signed offset from the appropriate base, and filling in the register
1354 field with the appropriate register (0, 2, or 13). */
1355 HOWTO (R_PPC_EMB_SDA21, /* type */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1359 FALSE, /* pc_relative */
1361 complain_overflow_signed, /* complain_on_overflow */
1362 bfd_elf_generic_reloc, /* special_function */
1363 "R_PPC_EMB_SDA21", /* name */
1364 FALSE, /* partial_inplace */
1366 0xffff, /* dst_mask */
1367 FALSE), /* pcrel_offset */
1369 /* Relocation not handled: R_PPC_EMB_MRKREF */
1370 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1371 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1372 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1373 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1374 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1376 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1377 in the 16 bit signed offset from the appropriate base, and filling in the
1378 register field with the appropriate register (0, 2, or 13). */
1379 HOWTO (R_PPC_EMB_RELSDA, /* type */
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 FALSE, /* pc_relative */
1385 complain_overflow_signed, /* complain_on_overflow */
1386 bfd_elf_generic_reloc, /* special_function */
1387 "R_PPC_EMB_RELSDA", /* name */
1388 FALSE, /* partial_inplace */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1393 HOWTO (R_PPC_IRELATIVE, /* type */
1395 2, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE, /* pc_relative */
1399 complain_overflow_bitfield, /* complain_on_overflow */
1400 bfd_elf_generic_reloc, /* special_function */
1401 "R_PPC_IRELATIVE", /* name */
1402 FALSE, /* partial_inplace */
1404 0xffffffff, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1407 /* A 16 bit relative relocation. */
1408 HOWTO (R_PPC_REL16, /* type */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 TRUE, /* pc_relative */
1414 complain_overflow_bitfield, /* complain_on_overflow */
1415 bfd_elf_generic_reloc, /* special_function */
1416 "R_PPC_REL16", /* name */
1417 FALSE, /* partial_inplace */
1419 0xffff, /* dst_mask */
1420 TRUE), /* pcrel_offset */
1422 /* A 16 bit relative relocation without overflow. */
1423 HOWTO (R_PPC_REL16_LO, /* type */
1425 1, /* size (0 = byte, 1 = short, 2 = long) */
1427 TRUE, /* pc_relative */
1429 complain_overflow_dont,/* complain_on_overflow */
1430 bfd_elf_generic_reloc, /* special_function */
1431 "R_PPC_REL16_LO", /* name */
1432 FALSE, /* partial_inplace */
1434 0xffff, /* dst_mask */
1435 TRUE), /* pcrel_offset */
1437 /* The high order 16 bits of a relative address. */
1438 HOWTO (R_PPC_REL16_HI, /* type */
1439 16, /* rightshift */
1440 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 TRUE, /* pc_relative */
1444 complain_overflow_dont, /* complain_on_overflow */
1445 bfd_elf_generic_reloc, /* special_function */
1446 "R_PPC_REL16_HI", /* name */
1447 FALSE, /* partial_inplace */
1449 0xffff, /* dst_mask */
1450 TRUE), /* pcrel_offset */
1452 /* The high order 16 bits of a relative address, plus 1 if the contents of
1453 the low 16 bits, treated as a signed number, is negative. */
1454 HOWTO (R_PPC_REL16_HA, /* type */
1455 16, /* rightshift */
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1458 TRUE, /* pc_relative */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 ppc_elf_addr16_ha_reloc, /* special_function */
1462 "R_PPC_REL16_HA", /* name */
1463 FALSE, /* partial_inplace */
1465 0xffff, /* dst_mask */
1466 TRUE), /* pcrel_offset */
1468 /* GNU extension to record C++ vtable hierarchy. */
1469 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1471 0, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE, /* pc_relative */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 NULL, /* special_function */
1477 "R_PPC_GNU_VTINHERIT", /* name */
1478 FALSE, /* partial_inplace */
1481 FALSE), /* pcrel_offset */
1483 /* GNU extension to record C++ vtable member usage. */
1484 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1486 0, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE, /* pc_relative */
1490 complain_overflow_dont, /* complain_on_overflow */
1491 NULL, /* special_function */
1492 "R_PPC_GNU_VTENTRY", /* name */
1493 FALSE, /* partial_inplace */
1496 FALSE), /* pcrel_offset */
1498 /* Phony reloc to handle AIX style TOC entries. */
1499 HOWTO (R_PPC_TOC16, /* type */
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE, /* pc_relative */
1505 complain_overflow_signed, /* complain_on_overflow */
1506 bfd_elf_generic_reloc, /* special_function */
1507 "R_PPC_TOC16", /* name */
1508 FALSE, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1514 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1517 ppc_elf_howto_init (void)
1519 unsigned int i, type;
1522 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1525 type = ppc_elf_howto_raw[i].type;
1526 if (type >= (sizeof (ppc_elf_howto_table)
1527 / sizeof (ppc_elf_howto_table[0])))
1529 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1533 static reloc_howto_type *
1534 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1535 bfd_reloc_code_real_type code)
1537 enum elf_ppc_reloc_type r;
1539 /* Initialize howto table if not already done. */
1540 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1541 ppc_elf_howto_init ();
1548 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1549 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1550 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1551 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1552 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1553 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1554 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1555 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1556 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1557 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1558 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1559 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1560 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1561 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1562 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1563 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1564 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1565 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1566 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1567 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1568 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1569 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1570 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1571 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1572 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1573 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1574 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1575 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1576 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1577 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1578 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1579 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1580 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1581 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1582 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1583 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1584 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1585 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1586 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1587 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1588 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1589 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1590 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1591 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1592 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1593 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1594 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1595 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1596 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1597 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1598 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1599 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1600 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1601 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1602 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1603 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1604 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1605 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1606 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1607 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1608 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1609 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1610 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1611 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1612 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1613 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1614 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1615 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1616 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1617 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1618 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1619 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1620 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1621 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1622 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1623 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1624 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1625 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1626 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1627 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1628 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1629 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1630 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1631 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1632 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1633 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1634 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1637 return ppc_elf_howto_table[r];
1640 static reloc_howto_type *
1641 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1647 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1649 if (ppc_elf_howto_raw[i].name != NULL
1650 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1651 return &ppc_elf_howto_raw[i];
1656 /* Set the howto pointer for a PowerPC ELF reloc. */
1659 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1661 Elf_Internal_Rela *dst)
1663 /* Initialize howto table if not already done. */
1664 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1665 ppc_elf_howto_init ();
1667 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1668 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1670 /* Just because the above assert didn't trigger doesn't mean that
1671 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1672 if (!cache_ptr->howto)
1674 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1675 abfd, ELF32_R_TYPE (dst->r_info));
1676 bfd_set_error (bfd_error_bad_value);
1678 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1682 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1684 static bfd_reloc_status_type
1685 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1686 arelent *reloc_entry,
1688 void *data ATTRIBUTE_UNUSED,
1689 asection *input_section,
1691 char **error_message ATTRIBUTE_UNUSED)
1695 if (output_bfd != NULL)
1697 reloc_entry->address += input_section->output_offset;
1698 return bfd_reloc_ok;
1701 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1702 return bfd_reloc_outofrange;
1704 if (bfd_is_com_section (symbol->section))
1707 relocation = symbol->value;
1709 relocation += symbol->section->output_section->vma;
1710 relocation += symbol->section->output_offset;
1711 relocation += reloc_entry->addend;
1712 if (reloc_entry->howto->pc_relative)
1713 relocation -= reloc_entry->address;
1715 reloc_entry->addend += (relocation & 0x8000) << 1;
1717 return bfd_reloc_continue;
1720 static bfd_reloc_status_type
1721 ppc_elf_unhandled_reloc (bfd *abfd,
1722 arelent *reloc_entry,
1725 asection *input_section,
1727 char **error_message)
1729 /* If this is a relocatable link (output_bfd test tells us), just
1730 call the generic function. Any adjustment will be done at final
1732 if (output_bfd != NULL)
1733 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1734 input_section, output_bfd, error_message);
1736 if (error_message != NULL)
1738 static char buf[60];
1739 sprintf (buf, _("generic linker can't handle %s"),
1740 reloc_entry->howto->name);
1741 *error_message = buf;
1743 return bfd_reloc_dangerous;
1746 /* Sections created by the linker. */
1748 typedef struct elf_linker_section
1750 /* Pointer to the bfd section. */
1754 /* Associated bss section name. */
1755 const char *bss_name;
1756 /* Associated symbol name. */
1757 const char *sym_name;
1758 /* Associated symbol. */
1759 struct elf_link_hash_entry *sym;
1760 } elf_linker_section_t;
1762 /* Linked list of allocated pointer entries. This hangs off of the
1763 symbol lists, and provides allows us to return different pointers,
1764 based on different addend's. */
1766 typedef struct elf_linker_section_pointers
1768 /* next allocated pointer for this symbol */
1769 struct elf_linker_section_pointers *next;
1770 /* offset of pointer from beginning of section */
1774 /* which linker section this is */
1775 elf_linker_section_t *lsect;
1776 } elf_linker_section_pointers_t;
1778 struct ppc_elf_obj_tdata
1780 struct elf_obj_tdata elf;
1782 /* A mapping from local symbols to offsets into the various linker
1783 sections added. This is index by the symbol index. */
1784 elf_linker_section_pointers_t **linker_section_pointers;
1786 /* Flags used to auto-detect plt type. */
1787 unsigned int makes_plt_call : 1;
1788 unsigned int has_rel16 : 1;
1791 #define ppc_elf_tdata(bfd) \
1792 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1794 #define elf_local_ptr_offsets(bfd) \
1795 (ppc_elf_tdata (bfd)->linker_section_pointers)
1797 #define is_ppc_elf(bfd) \
1798 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1799 && elf_object_id (bfd) == PPC32_ELF_DATA)
1801 /* Override the generic function because we store some extras. */
1804 ppc_elf_mkobject (bfd *abfd)
1806 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1810 /* Fix bad default arch selected for a 32 bit input bfd when the
1811 default is 64 bit. */
1814 ppc_elf_object_p (bfd *abfd)
1816 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1818 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1820 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1822 /* Relies on arch after 64 bit default being 32 bit default. */
1823 abfd->arch_info = abfd->arch_info->next;
1824 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1830 /* Function to set whether a module needs the -mrelocatable bit set. */
1833 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1835 BFD_ASSERT (!elf_flags_init (abfd)
1836 || elf_elfheader (abfd)->e_flags == flags);
1838 elf_elfheader (abfd)->e_flags = flags;
1839 elf_flags_init (abfd) = TRUE;
1843 /* Support for core dump NOTE sections. */
1846 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1851 switch (note->descsz)
1856 case 268: /* Linux/PPC. */
1858 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1861 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
1870 /* Make a ".reg/999" section. */
1871 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1872 size, note->descpos + offset);
1876 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1878 switch (note->descsz)
1883 case 128: /* Linux/PPC elf_prpsinfo. */
1884 elf_tdata (abfd)->core_program
1885 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1886 elf_tdata (abfd)->core_command
1887 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1890 /* Note that for some reason, a spurious space is tacked
1891 onto the end of the args in some (at least one anyway)
1892 implementations, so strip it off if it exists. */
1895 char *command = elf_tdata (abfd)->core_command;
1896 int n = strlen (command);
1898 if (0 < n && command[n - 1] == ' ')
1899 command[n - 1] = '\0';
1906 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1918 va_start (ap, note_type);
1919 memset (data, 0, 32);
1920 strncpy (data + 32, va_arg (ap, const char *), 16);
1921 strncpy (data + 48, va_arg (ap, const char *), 80);
1923 return elfcore_write_note (abfd, buf, bufsiz,
1924 "CORE", note_type, data, sizeof (data));
1935 va_start (ap, note_type);
1936 memset (data, 0, 72);
1937 pid = va_arg (ap, long);
1938 bfd_put_32 (abfd, pid, data + 24);
1939 cursig = va_arg (ap, int);
1940 bfd_put_16 (abfd, cursig, data + 12);
1941 greg = va_arg (ap, const void *);
1942 memcpy (data + 72, greg, 192);
1943 memset (data + 264, 0, 4);
1945 return elfcore_write_note (abfd, buf, bufsiz,
1946 "CORE", note_type, data, sizeof (data));
1951 /* Return address for Ith PLT stub in section PLT, for relocation REL
1952 or (bfd_vma) -1 if it should not be included. */
1955 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1956 const asection *plt ATTRIBUTE_UNUSED,
1959 return rel->address;
1962 /* Handle a PowerPC specific section when reading an object file. This
1963 is called when bfd_section_from_shdr finds a section with an unknown
1967 ppc_elf_section_from_shdr (bfd *abfd,
1968 Elf_Internal_Shdr *hdr,
1975 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1978 newsect = hdr->bfd_section;
1979 flags = bfd_get_section_flags (abfd, newsect);
1980 if (hdr->sh_flags & SHF_EXCLUDE)
1981 flags |= SEC_EXCLUDE;
1983 if (hdr->sh_type == SHT_ORDERED)
1984 flags |= SEC_SORT_ENTRIES;
1986 bfd_set_section_flags (abfd, newsect, flags);
1990 /* Set up any other section flags and such that may be necessary. */
1993 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1994 Elf_Internal_Shdr *shdr,
1997 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1998 shdr->sh_type = SHT_ORDERED;
2003 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2004 need to bump up the number of section headers. */
2007 ppc_elf_additional_program_headers (bfd *abfd,
2008 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2013 s = bfd_get_section_by_name (abfd, ".sbss2");
2014 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2017 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2018 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2024 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2025 .PPC.EMB.sbss0 a normal section, and not a bss section so
2026 that the linker doesn't crater when trying to make more than
2029 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2031 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2032 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2033 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2034 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2035 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2036 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2037 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2038 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2039 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2040 { NULL, 0, 0, 0, 0 }
2043 /* This is what we want for new plt/got. */
2044 static struct bfd_elf_special_section ppc_alt_plt =
2045 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2047 static const struct bfd_elf_special_section *
2048 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2050 const struct bfd_elf_special_section *ssect;
2052 /* See if this is one of the special sections. */
2053 if (sec->name == NULL)
2056 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2060 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2061 ssect = &ppc_alt_plt;
2065 return _bfd_elf_get_sec_type_attr (abfd, sec);
2068 /* Very simple linked list structure for recording apuinfo values. */
2069 typedef struct apuinfo_list
2071 struct apuinfo_list *next;
2072 unsigned long value;
2076 static apuinfo_list *head;
2077 static bfd_boolean apuinfo_set;
2080 apuinfo_list_init (void)
2083 apuinfo_set = FALSE;
2087 apuinfo_list_add (unsigned long value)
2089 apuinfo_list *entry = head;
2091 while (entry != NULL)
2093 if (entry->value == value)
2095 entry = entry->next;
2098 entry = bfd_malloc (sizeof (* entry));
2102 entry->value = value;
2108 apuinfo_list_length (void)
2110 apuinfo_list *entry;
2111 unsigned long count;
2113 for (entry = head, count = 0;
2115 entry = entry->next)
2121 static inline unsigned long
2122 apuinfo_list_element (unsigned long number)
2124 apuinfo_list * entry;
2128 entry = entry->next)
2131 return entry ? entry->value : 0;
2135 apuinfo_list_finish (void)
2137 apuinfo_list *entry;
2139 for (entry = head; entry;)
2141 apuinfo_list *next = entry->next;
2149 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2150 #define APUINFO_LABEL "APUinfo"
2152 /* Scan the input BFDs and create a linked list of
2153 the APUinfo values that will need to be emitted. */
2156 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2160 char *buffer = NULL;
2161 bfd_size_type largest_input_size = 0;
2163 unsigned long length;
2164 const char *error_message = NULL;
2166 if (link_info == NULL)
2169 apuinfo_list_init ();
2171 /* Read in the input sections contents. */
2172 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2174 unsigned long datum;
2176 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2180 error_message = _("corrupt %s section in %B");
2181 length = asec->size;
2186 if (largest_input_size < asec->size)
2190 largest_input_size = asec->size;
2191 buffer = bfd_malloc (largest_input_size);
2196 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2197 || (bfd_bread (buffer, length, ibfd) != length))
2199 error_message = _("unable to read in %s section from %B");
2203 /* Verify the contents of the header. Note - we have to
2204 extract the values this way in order to allow for a
2205 host whose endian-ness is different from the target. */
2206 datum = bfd_get_32 (ibfd, buffer);
2207 if (datum != sizeof APUINFO_LABEL)
2210 datum = bfd_get_32 (ibfd, buffer + 8);
2214 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2217 /* Get the number of bytes used for apuinfo entries. */
2218 datum = bfd_get_32 (ibfd, buffer + 4);
2219 if (datum + 20 != length)
2222 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2223 for (i = 0; i < datum; i += 4)
2224 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2227 error_message = NULL;
2231 /* Compute the size of the output section. */
2232 unsigned num_entries = apuinfo_list_length ();
2234 /* Set the output section size, if it exists. */
2235 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2237 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2240 error_message = _("warning: unable to set size of %s section in %B");
2249 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2252 /* Prevent the output section from accumulating the input sections'
2253 contents. We have already stored this in our linked list structure. */
2256 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2257 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2259 bfd_byte *contents ATTRIBUTE_UNUSED)
2261 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2264 /* Finally we can generate the output section. */
2267 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2272 unsigned num_entries;
2273 bfd_size_type length;
2275 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2282 length = asec->size;
2286 buffer = bfd_malloc (length);
2289 (*_bfd_error_handler)
2290 (_("failed to allocate space for new APUinfo section."));
2294 /* Create the apuinfo header. */
2295 num_entries = apuinfo_list_length ();
2296 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2297 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2298 bfd_put_32 (abfd, 0x2, buffer + 8);
2299 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2302 for (i = 0; i < num_entries; i++)
2304 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2308 if (length != asec->size)
2309 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2311 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2312 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2316 apuinfo_list_finish ();
2320 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2322 bfd_byte buf[GLINK_ENTRY_SIZE];
2324 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2327 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2328 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2329 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2330 && bfd_get_32 (abfd, buf + 12) == BCTR);
2334 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2336 bfd_vma vma = *(bfd_vma *) ptr;
2337 return ((section->flags & SEC_ALLOC) != 0
2338 && section->vma <= vma
2339 && vma < section->vma + section->size);
2343 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2344 long dynsymcount, asymbol **dynsyms,
2347 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2348 asection *plt, *relplt, *dynamic, *glink;
2349 bfd_vma glink_vma = 0;
2350 bfd_vma resolv_vma = 0;
2361 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2364 if (dynsymcount <= 0)
2367 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2371 plt = bfd_get_section_by_name (abfd, ".plt");
2375 /* Call common code to handle old-style executable PLTs. */
2376 if (elf_section_flags (plt) & SHF_EXECINSTR)
2377 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2378 dynsymcount, dynsyms, ret);
2380 /* If this object was prelinked, the prelinker stored the address
2381 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2382 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2383 if (dynamic != NULL)
2385 bfd_byte *dynbuf, *extdyn, *extdynend;
2387 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2389 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2392 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2393 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2396 extdynend = extdyn + dynamic->size;
2397 for (; extdyn < extdynend; extdyn += extdynsize)
2399 Elf_Internal_Dyn dyn;
2400 (*swap_dyn_in) (abfd, extdyn, &dyn);
2402 if (dyn.d_tag == DT_NULL)
2405 if (dyn.d_tag == DT_PPC_GOT)
2407 unsigned int g_o_t = dyn.d_un.d_val;
2408 asection *got = bfd_get_section_by_name (abfd, ".got");
2410 && bfd_get_section_contents (abfd, got, buf,
2411 g_o_t - got->vma + 4, 4))
2412 glink_vma = bfd_get_32 (abfd, buf);
2419 /* Otherwise we read the first plt entry. */
2422 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2423 glink_vma = bfd_get_32 (abfd, buf);
2429 /* The .glink section usually does not survive the final
2430 link; search for the section (usually .text) where the
2431 glink stubs now reside. */
2432 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2436 /* Determine glink PLT resolver by reading the relative branch
2437 from the first glink stub. */
2438 if (bfd_get_section_contents (abfd, glink, buf,
2439 glink_vma - glink->vma, 4))
2441 unsigned int insn = bfd_get_32 (abfd, buf);
2443 /* The first glink stub may either branch to the resolver ... */
2445 if ((insn & ~0x3fffffc) == 0)
2446 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2448 /* ... or fall through a bunch of NOPs. */
2449 else if ((insn ^ B ^ NOP) == 0)
2451 bfd_get_section_contents (abfd, glink, buf,
2452 glink_vma - glink->vma + i, 4);
2454 if (bfd_get_32 (abfd, buf) != NOP)
2456 resolv_vma = glink_vma + i;
2461 count = relplt->size / sizeof (Elf32_External_Rela);
2462 stub_vma = glink_vma - (bfd_vma) count * 16;
2463 /* If the stubs are those for -shared/-pie then we might have
2464 multiple stubs for each plt entry. If that is the case then
2465 there is no way to associate stubs with their plt entries short
2466 of figuring out the GOT pointer value used in the stub. */
2467 if (!is_nonpic_glink_stub (abfd, glink,
2468 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2471 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2472 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2475 size = count * sizeof (asymbol);
2476 p = relplt->relocation;
2477 for (i = 0; i < count; i++, p++)
2479 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2481 size += sizeof ("+0x") - 1 + 8;
2484 size += sizeof (asymbol) + sizeof ("__glink");
2487 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2489 s = *ret = bfd_malloc (size);
2493 names = (char *) (s + count + 1 + (resolv_vma != 0));
2494 p = relplt->relocation;
2495 for (i = 0; i < count; i++, p++)
2499 *s = **p->sym_ptr_ptr;
2500 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2501 we are defining a symbol, ensure one of them is set. */
2502 if ((s->flags & BSF_LOCAL) == 0)
2503 s->flags |= BSF_GLOBAL;
2504 s->flags |= BSF_SYNTHETIC;
2506 s->value = stub_vma - glink->vma;
2509 len = strlen ((*p->sym_ptr_ptr)->name);
2510 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2514 memcpy (names, "+0x", sizeof ("+0x") - 1);
2515 names += sizeof ("+0x") - 1;
2516 bfd_sprintf_vma (abfd, names, p->addend);
2517 names += strlen (names);
2519 memcpy (names, "@plt", sizeof ("@plt"));
2520 names += sizeof ("@plt");
2525 /* Add a symbol at the start of the glink branch table. */
2526 memset (s, 0, sizeof *s);
2528 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2530 s->value = glink_vma - glink->vma;
2532 memcpy (names, "__glink", sizeof ("__glink"));
2533 names += sizeof ("__glink");
2539 /* Add a symbol for the glink PLT resolver. */
2540 memset (s, 0, sizeof *s);
2542 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2544 s->value = resolv_vma - glink->vma;
2546 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2547 names += sizeof ("__glink_PLTresolve");
2555 /* The following functions are specific to the ELF linker, while
2556 functions above are used generally. They appear in this file more
2557 or less in the order in which they are called. eg.
2558 ppc_elf_check_relocs is called early in the link process,
2559 ppc_elf_finish_dynamic_sections is one of the last functions
2562 /* The PPC linker needs to keep track of the number of relocs that it
2563 decides to copy as dynamic relocs in check_relocs for each symbol.
2564 This is so that it can later discard them if they are found to be
2565 unnecessary. We store the information in a field extending the
2566 regular ELF linker hash table. */
2568 struct ppc_elf_dyn_relocs
2570 struct ppc_elf_dyn_relocs *next;
2572 /* The input section of the reloc. */
2575 /* Total number of relocs copied for the input section. */
2576 bfd_size_type count;
2578 /* Number of pc-relative relocs copied for the input section. */
2579 bfd_size_type pc_count;
2582 /* Track PLT entries needed for a given symbol. We might need more
2583 than one glink entry per symbol when generating a pic binary. */
2586 struct plt_entry *next;
2588 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2589 This field stores the offset into .got2 used to initialise the
2590 GOT pointer reg. It will always be at least 32768. (Current
2591 gcc always uses an offset of 32768, but ld -r will pack .got2
2592 sections together resulting in larger offsets). */
2595 /* The .got2 section. */
2598 /* PLT refcount or offset. */
2601 bfd_signed_vma refcount;
2605 /* .glink stub offset. */
2606 bfd_vma glink_offset;
2609 /* Of those relocs that might be copied as dynamic relocs, this function
2610 selects those that must be copied when linking a shared library,
2611 even when the symbol is local. */
2614 must_be_dyn_reloc (struct bfd_link_info *info,
2615 enum elf_ppc_reloc_type r_type)
2624 case R_PPC_REL14_BRTAKEN:
2625 case R_PPC_REL14_BRNTAKEN:
2631 case R_PPC_TPREL16_LO:
2632 case R_PPC_TPREL16_HI:
2633 case R_PPC_TPREL16_HA:
2634 return !info->executable;
2638 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2639 copying dynamic variables from a shared lib into an app's dynbss
2640 section, and instead use a dynamic relocation to point into the
2642 #define ELIMINATE_COPY_RELOCS 1
2644 /* PPC ELF linker hash entry. */
2646 struct ppc_elf_link_hash_entry
2648 struct elf_link_hash_entry elf;
2650 /* If this symbol is used in the linker created sections, the processor
2651 specific backend uses this field to map the field into the offset
2652 from the beginning of the section. */
2653 elf_linker_section_pointers_t *linker_section_pointer;
2655 /* Track dynamic relocs copied for this symbol. */
2656 struct ppc_elf_dyn_relocs *dyn_relocs;
2658 /* Contexts in which symbol is used in the GOT (or TOC).
2659 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2660 corresponding relocs are encountered during check_relocs.
2661 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2662 indicate the corresponding GOT entry type is not needed. */
2663 #define TLS_GD 1 /* GD reloc. */
2664 #define TLS_LD 2 /* LD reloc. */
2665 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2666 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2667 #define TLS_TLS 16 /* Any TLS reloc. */
2668 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2669 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
2672 /* Nonzero if we have seen a small data relocation referring to this
2674 unsigned char has_sda_refs;
2677 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2679 /* PPC ELF linker hash table. */
2681 struct ppc_elf_link_hash_table
2683 struct elf_link_hash_table elf;
2685 /* Short-cuts to get to dynamic linker sections. */
2697 elf_linker_section_t sdata[2];
2700 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2703 /* The .got.plt section (VxWorks only)*/
2706 /* Shortcut to __tls_get_addr. */
2707 struct elf_link_hash_entry *tls_get_addr;
2709 /* The bfd that forced an old-style PLT. */
2712 /* TLS local dynamic got entry handling. */
2714 bfd_signed_vma refcount;
2718 /* Offset of branch table to PltResolve function in glink. */
2719 bfd_vma glink_pltresolve;
2721 /* Size of reserved GOT entries. */
2722 unsigned int got_header_size;
2723 /* Non-zero if allocating the header left a gap. */
2724 unsigned int got_gap;
2726 /* The type of PLT we have chosen to use. */
2727 enum ppc_elf_plt_type plt_type;
2729 /* Set if we should emit symbols for stubs. */
2730 unsigned int emit_stub_syms:1;
2732 /* Set if __tls_get_addr optimization should not be done. */
2733 unsigned int no_tls_get_addr_opt:1;
2735 /* True if the target system is VxWorks. */
2736 unsigned int is_vxworks:1;
2738 /* The size of PLT entries. */
2740 /* The distance between adjacent PLT slots. */
2742 /* The size of the first PLT entry. */
2743 int plt_initial_entry_size;
2745 /* Small local sym cache. */
2746 struct sym_cache sym_cache;
2749 /* Rename some of the generic section flags to better document how they
2752 /* Nonzero if this section has TLS related relocations. */
2753 #define has_tls_reloc sec_flg0
2755 /* Nonzero if this section has a call to __tls_get_addr. */
2756 #define has_tls_get_addr_call sec_flg1
2758 /* Get the PPC ELF linker hash table from a link_info structure. */
2760 #define ppc_elf_hash_table(p) \
2761 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
2762 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
2764 /* Create an entry in a PPC ELF linker hash table. */
2766 static struct bfd_hash_entry *
2767 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2768 struct bfd_hash_table *table,
2771 /* Allocate the structure if it has not already been allocated by a
2775 entry = bfd_hash_allocate (table,
2776 sizeof (struct ppc_elf_link_hash_entry));
2781 /* Call the allocation method of the superclass. */
2782 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2785 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2786 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2787 ppc_elf_hash_entry (entry)->tls_mask = 0;
2788 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
2794 /* Create a PPC ELF linker hash table. */
2796 static struct bfd_link_hash_table *
2797 ppc_elf_link_hash_table_create (bfd *abfd)
2799 struct ppc_elf_link_hash_table *ret;
2801 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2805 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2806 ppc_elf_link_hash_newfunc,
2807 sizeof (struct ppc_elf_link_hash_entry),
2814 ret->elf.init_plt_refcount.refcount = 0;
2815 ret->elf.init_plt_refcount.glist = NULL;
2816 ret->elf.init_plt_offset.offset = 0;
2817 ret->elf.init_plt_offset.glist = NULL;
2819 ret->sdata[0].name = ".sdata";
2820 ret->sdata[0].sym_name = "_SDA_BASE_";
2821 ret->sdata[0].bss_name = ".sbss";
2823 ret->sdata[1].name = ".sdata2";
2824 ret->sdata[1].sym_name = "_SDA2_BASE_";
2825 ret->sdata[1].bss_name = ".sbss2";
2827 ret->plt_entry_size = 12;
2828 ret->plt_slot_size = 8;
2829 ret->plt_initial_entry_size = 72;
2831 return &ret->elf.root;
2834 /* Create .got and the related sections. */
2837 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2839 struct ppc_elf_link_hash_table *htab;
2843 if (!_bfd_elf_create_got_section (abfd, info))
2846 htab = ppc_elf_hash_table (info);
2847 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2851 if (htab->is_vxworks)
2853 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2859 /* The powerpc .got has a blrl instruction in it. Mark it
2861 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2862 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2863 if (!bfd_set_section_flags (abfd, s, flags))
2867 htab->relgot = bfd_get_section_by_name (abfd, ".rela.got");
2875 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
2877 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2881 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
2882 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2883 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
2886 || !bfd_set_section_alignment (abfd, s, 4))
2889 flags = SEC_ALLOC | SEC_LINKER_CREATED;
2890 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
2893 || !bfd_set_section_alignment (abfd, s, 4))
2896 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2897 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2898 s = bfd_make_section_with_flags (abfd, ".rela.iplt", flags);
2901 || ! bfd_set_section_alignment (abfd, s, 2))
2906 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2907 to output sections (just like _bfd_elf_create_dynamic_sections has
2908 to create .dynbss and .rela.bss). */
2911 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2913 struct ppc_elf_link_hash_table *htab;
2917 htab = ppc_elf_hash_table (info);
2919 if (htab->got == NULL
2920 && !ppc_elf_create_got (abfd, info))
2923 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2926 if (htab->glink == NULL
2927 && !ppc_elf_create_glink (abfd, info))
2930 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2931 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2932 SEC_ALLOC | SEC_LINKER_CREATED);
2939 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2940 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2941 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2942 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2945 || ! bfd_set_section_alignment (abfd, s, 2))
2949 if (htab->is_vxworks
2950 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2953 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2954 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2958 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2959 if (htab->plt_type == PLT_VXWORKS)
2960 /* The VxWorks PLT is a loaded section with contents. */
2961 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2962 return bfd_set_section_flags (abfd, s, flags);
2965 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2968 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2969 struct elf_link_hash_entry *dir,
2970 struct elf_link_hash_entry *ind)
2972 struct ppc_elf_link_hash_entry *edir, *eind;
2974 edir = (struct ppc_elf_link_hash_entry *) dir;
2975 eind = (struct ppc_elf_link_hash_entry *) ind;
2977 if (eind->dyn_relocs != NULL)
2979 if (edir->dyn_relocs != NULL)
2981 struct ppc_elf_dyn_relocs **pp;
2982 struct ppc_elf_dyn_relocs *p;
2984 /* Add reloc counts against the indirect sym to the direct sym
2985 list. Merge any entries against the same section. */
2986 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2988 struct ppc_elf_dyn_relocs *q;
2990 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2991 if (q->sec == p->sec)
2993 q->pc_count += p->pc_count;
2994 q->count += p->count;
3001 *pp = edir->dyn_relocs;
3004 edir->dyn_relocs = eind->dyn_relocs;
3005 eind->dyn_relocs = NULL;
3008 edir->tls_mask |= eind->tls_mask;
3009 edir->has_sda_refs |= eind->has_sda_refs;
3011 /* If called to transfer flags for a weakdef during processing
3012 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3013 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3014 if (!(ELIMINATE_COPY_RELOCS
3015 && eind->elf.root.type != bfd_link_hash_indirect
3016 && edir->elf.dynamic_adjusted))
3017 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3019 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3020 edir->elf.ref_regular |= eind->elf.ref_regular;
3021 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3022 edir->elf.needs_plt |= eind->elf.needs_plt;
3023 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3025 /* If we were called to copy over info for a weak sym, that's all. */
3026 if (eind->elf.root.type != bfd_link_hash_indirect)
3029 /* Copy over the GOT refcount entries that we may have already seen to
3030 the symbol which just became indirect. */
3031 edir->elf.got.refcount += eind->elf.got.refcount;
3032 eind->elf.got.refcount = 0;
3034 /* And plt entries. */
3035 if (eind->elf.plt.plist != NULL)
3037 if (edir->elf.plt.plist != NULL)
3039 struct plt_entry **entp;
3040 struct plt_entry *ent;
3042 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3044 struct plt_entry *dent;
3046 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3047 if (dent->sec == ent->sec && dent->addend == ent->addend)
3049 dent->plt.refcount += ent->plt.refcount;
3056 *entp = edir->elf.plt.plist;
3059 edir->elf.plt.plist = eind->elf.plt.plist;
3060 eind->elf.plt.plist = NULL;
3063 if (eind->elf.dynindx != -1)
3065 if (edir->elf.dynindx != -1)
3066 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3067 edir->elf.dynstr_index);
3068 edir->elf.dynindx = eind->elf.dynindx;
3069 edir->elf.dynstr_index = eind->elf.dynstr_index;
3070 eind->elf.dynindx = -1;
3071 eind->elf.dynstr_index = 0;
3075 /* Hook called by the linker routine which adds symbols from an object
3076 file. We use it to put .comm items in .sbss, and not .bss. */
3079 ppc_elf_add_symbol_hook (bfd *abfd,
3080 struct bfd_link_info *info,
3081 Elf_Internal_Sym *sym,
3082 const char **namep ATTRIBUTE_UNUSED,
3083 flagword *flagsp ATTRIBUTE_UNUSED,
3087 if (sym->st_shndx == SHN_COMMON
3088 && !info->relocatable
3089 && is_ppc_elf (info->output_bfd)
3090 && sym->st_size <= elf_gp_size (abfd))
3092 /* Common symbols less than or equal to -G nn bytes are automatically
3094 struct ppc_elf_link_hash_table *htab;
3096 htab = ppc_elf_hash_table (info);
3097 if (htab->sbss == NULL)
3099 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3101 if (!htab->elf.dynobj)
3102 htab->elf.dynobj = abfd;
3104 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3107 if (htab->sbss == NULL)
3112 *valp = sym->st_size;
3115 if ((abfd->flags & DYNAMIC) == 0
3116 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3117 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
3123 create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3125 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3127 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3129 if (lsect->sym == NULL)
3131 if (lsect->sym->root.type == bfd_link_hash_new)
3132 lsect->sym->non_elf = 0;
3133 lsect->sym->ref_regular = 1;
3134 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3138 /* Create a special linker section. */
3141 ppc_elf_create_linker_section (bfd *abfd,
3142 struct bfd_link_info *info,
3144 elf_linker_section_t *lsect)
3146 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3149 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3150 | SEC_LINKER_CREATED);
3152 /* Record the first bfd that needs the special sections. */
3153 if (!htab->elf.dynobj)
3154 htab->elf.dynobj = abfd;
3156 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3160 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3164 return create_sdata_sym (info, lsect);
3167 /* Find a linker generated pointer with a given addend and type. */
3169 static elf_linker_section_pointers_t *
3170 elf_find_pointer_linker_section
3171 (elf_linker_section_pointers_t *linker_pointers,
3173 elf_linker_section_t *lsect)
3175 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3176 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3177 return linker_pointers;
3182 /* Allocate a pointer to live in a linker created section. */
3185 elf_create_pointer_linker_section (bfd *abfd,
3186 elf_linker_section_t *lsect,
3187 struct elf_link_hash_entry *h,
3188 const Elf_Internal_Rela *rel)
3190 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3191 elf_linker_section_pointers_t *linker_section_ptr;
3192 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3195 BFD_ASSERT (lsect != NULL);
3197 /* Is this a global symbol? */
3200 struct ppc_elf_link_hash_entry *eh;
3202 /* Has this symbol already been allocated? If so, our work is done. */
3203 eh = (struct ppc_elf_link_hash_entry *) h;
3204 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3209 ptr_linker_section_ptr = &eh->linker_section_pointer;
3213 BFD_ASSERT (is_ppc_elf (abfd));
3215 /* Allocation of a pointer to a local symbol. */
3216 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3218 /* Allocate a table to hold the local symbols if first time. */
3221 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3224 amt *= sizeof (elf_linker_section_pointers_t *);
3225 ptr = bfd_zalloc (abfd, amt);
3230 elf_local_ptr_offsets (abfd) = ptr;
3233 /* Has this symbol already been allocated? If so, our work is done. */
3234 if (elf_find_pointer_linker_section (ptr[r_symndx],
3239 ptr_linker_section_ptr = &ptr[r_symndx];
3242 /* Allocate space for a pointer in the linker section, and allocate
3243 a new pointer record from internal memory. */
3244 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3245 amt = sizeof (elf_linker_section_pointers_t);
3246 linker_section_ptr = bfd_alloc (abfd, amt);
3248 if (!linker_section_ptr)
3251 linker_section_ptr->next = *ptr_linker_section_ptr;
3252 linker_section_ptr->addend = rel->r_addend;
3253 linker_section_ptr->lsect = lsect;
3254 *ptr_linker_section_ptr = linker_section_ptr;
3256 linker_section_ptr->offset = lsect->section->size;
3257 lsect->section->size += 4;
3261 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3262 lsect->name, (long) linker_section_ptr->offset,
3263 (long) lsect->section->size);
3269 static struct plt_entry **
3270 update_local_sym_info (bfd *abfd,
3271 Elf_Internal_Shdr *symtab_hdr,
3272 unsigned long r_symndx,
3275 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3276 struct plt_entry **local_plt;
3277 char *local_got_tls_masks;
3279 if (local_got_refcounts == NULL)
3281 bfd_size_type size = symtab_hdr->sh_info;
3283 size *= (sizeof (*local_got_refcounts)
3284 + sizeof (*local_plt)
3285 + sizeof (*local_got_tls_masks));
3286 local_got_refcounts = bfd_zalloc (abfd, size);
3287 if (local_got_refcounts == NULL)
3289 elf_local_got_refcounts (abfd) = local_got_refcounts;
3292 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3293 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3294 local_got_tls_masks[r_symndx] |= tls_type;
3295 if (tls_type != PLT_IFUNC)
3296 local_got_refcounts[r_symndx] += 1;
3297 return local_plt + r_symndx;
3301 update_plt_info (bfd *abfd, struct plt_entry **plist,
3302 asection *sec, bfd_vma addend)
3304 struct plt_entry *ent;
3308 for (ent = *plist; ent != NULL; ent = ent->next)
3309 if (ent->sec == sec && ent->addend == addend)
3313 bfd_size_type amt = sizeof (*ent);
3314 ent = bfd_alloc (abfd, amt);
3319 ent->addend = addend;
3320 ent->plt.refcount = 0;
3323 ent->plt.refcount += 1;
3327 static struct plt_entry *
3328 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3330 struct plt_entry *ent;
3334 for (ent = *plist; ent != NULL; ent = ent->next)
3335 if (ent->sec == sec && ent->addend == addend)
3341 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3343 return (r_type == R_PPC_PLTREL24
3344 || r_type == R_PPC_LOCAL24PC
3345 || r_type == R_PPC_REL24
3346 || r_type == R_PPC_REL14
3347 || r_type == R_PPC_REL14_BRTAKEN
3348 || r_type == R_PPC_REL14_BRNTAKEN
3349 || r_type == R_PPC_ADDR24
3350 || r_type == R_PPC_ADDR14
3351 || r_type == R_PPC_ADDR14_BRTAKEN
3352 || r_type == R_PPC_ADDR14_BRNTAKEN);
3356 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3358 (*_bfd_error_handler)
3359 (_("%B: relocation %s cannot be used when making a shared object"),
3361 ppc_elf_howto_table[r_type]->name);
3362 bfd_set_error (bfd_error_bad_value);
3365 /* Look through the relocs for a section during the first phase, and
3366 allocate space in the global offset table or procedure linkage
3370 ppc_elf_check_relocs (bfd *abfd,
3371 struct bfd_link_info *info,
3373 const Elf_Internal_Rela *relocs)
3375 struct ppc_elf_link_hash_table *htab;
3376 Elf_Internal_Shdr *symtab_hdr;
3377 struct elf_link_hash_entry **sym_hashes;
3378 const Elf_Internal_Rela *rel;
3379 const Elf_Internal_Rela *rel_end;
3380 asection *got2, *sreloc;
3381 struct elf_link_hash_entry *tga;
3383 if (info->relocatable)
3386 /* Don't do anything special with non-loaded, non-alloced sections.
3387 In particular, any relocs in such sections should not affect GOT
3388 and PLT reference counting (ie. we don't allow them to create GOT
3389 or PLT entries), there's no possibility or desire to optimize TLS
3390 relocs, and there's not much point in propagating relocs to shared
3391 libs that the dynamic linker won't relocate. */
3392 if ((sec->flags & SEC_ALLOC) == 0)
3396 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3400 BFD_ASSERT (is_ppc_elf (abfd));
3402 /* Initialize howto table if not already done. */
3403 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3404 ppc_elf_howto_init ();
3406 htab = ppc_elf_hash_table (info);
3407 if (htab->glink == NULL)
3409 if (htab->elf.dynobj == NULL)
3410 htab->elf.dynobj = abfd;
3411 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3414 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3415 FALSE, FALSE, TRUE);
3416 symtab_hdr = &elf_symtab_hdr (abfd);
3417 sym_hashes = elf_sym_hashes (abfd);
3418 got2 = bfd_get_section_by_name (abfd, ".got2");
3421 rel_end = relocs + sec->reloc_count;
3422 for (rel = relocs; rel < rel_end; rel++)
3424 unsigned long r_symndx;
3425 enum elf_ppc_reloc_type r_type;
3426 struct elf_link_hash_entry *h;
3429 r_symndx = ELF32_R_SYM (rel->r_info);
3430 if (r_symndx < symtab_hdr->sh_info)
3434 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3435 while (h->root.type == bfd_link_hash_indirect
3436 || h->root.type == bfd_link_hash_warning)
3437 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3440 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3441 This shows up in particular in an R_PPC_ADDR32 in the eabi
3444 && htab->got == NULL
3445 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3447 if (htab->elf.dynobj == NULL)
3448 htab->elf.dynobj = abfd;
3449 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3451 BFD_ASSERT (h == htab->elf.hgot);
3455 r_type = ELF32_R_TYPE (rel->r_info);
3456 if (h == NULL && !htab->is_vxworks)
3458 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3463 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3465 || is_branch_reloc (r_type)))
3467 struct plt_entry **ifunc;
3470 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3475 /* STT_GNU_IFUNC symbols must have a PLT entry;
3476 In a non-pie executable even when there are
3479 if (r_type == R_PPC_PLTREL24)
3481 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3483 addend = rel->r_addend;
3485 if (!update_plt_info (abfd, ifunc, got2, addend))
3490 if (!htab->is_vxworks
3491 && is_branch_reloc (r_type)
3496 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3497 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3498 /* We have a new-style __tls_get_addr call with a marker
3502 /* Mark this section as having an old-style call. */
3503 sec->has_tls_get_addr_call = 1;
3510 /* These special tls relocs tie a call to __tls_get_addr with
3511 its parameter symbol. */
3514 case R_PPC_GOT_TLSLD16:
3515 case R_PPC_GOT_TLSLD16_LO:
3516 case R_PPC_GOT_TLSLD16_HI:
3517 case R_PPC_GOT_TLSLD16_HA:
3518 tls_type = TLS_TLS | TLS_LD;
3521 case R_PPC_GOT_TLSGD16:
3522 case R_PPC_GOT_TLSGD16_LO:
3523 case R_PPC_GOT_TLSGD16_HI:
3524 case R_PPC_GOT_TLSGD16_HA:
3525 tls_type = TLS_TLS | TLS_GD;
3528 case R_PPC_GOT_TPREL16:
3529 case R_PPC_GOT_TPREL16_LO:
3530 case R_PPC_GOT_TPREL16_HI:
3531 case R_PPC_GOT_TPREL16_HA:
3532 if (!info->executable)
3533 info->flags |= DF_STATIC_TLS;
3534 tls_type = TLS_TLS | TLS_TPREL;
3537 case R_PPC_GOT_DTPREL16:
3538 case R_PPC_GOT_DTPREL16_LO:
3539 case R_PPC_GOT_DTPREL16_HI:
3540 case R_PPC_GOT_DTPREL16_HA:
3541 tls_type = TLS_TLS | TLS_DTPREL;
3543 sec->has_tls_reloc = 1;
3546 /* GOT16 relocations */
3548 case R_PPC_GOT16_LO:
3549 case R_PPC_GOT16_HI:
3550 case R_PPC_GOT16_HA:
3551 /* This symbol requires a global offset table entry. */
3552 if (htab->got == NULL)
3554 if (htab->elf.dynobj == NULL)
3555 htab->elf.dynobj = abfd;
3556 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3561 h->got.refcount += 1;
3562 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3565 /* This is a global offset table entry for a local symbol. */
3566 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3569 /* We may also need a plt entry if the symbol turns out to be
3571 if (h != NULL && !info->shared)
3573 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3578 /* Indirect .sdata relocation. */
3579 case R_PPC_EMB_SDAI16:
3582 bad_shared_reloc (abfd, r_type);
3585 if (htab->sdata[0].section == NULL
3586 && !ppc_elf_create_linker_section (abfd, info, 0,
3589 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3594 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3595 h->non_got_ref = TRUE;
3599 /* Indirect .sdata2 relocation. */
3600 case R_PPC_EMB_SDA2I16:
3603 bad_shared_reloc (abfd, r_type);
3606 if (htab->sdata[1].section == NULL
3607 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3610 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3615 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3616 h->non_got_ref = TRUE;
3620 case R_PPC_SDAREL16:
3621 if (htab->sdata[0].sym == NULL
3622 && !create_sdata_sym (info, &htab->sdata[0]))
3626 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3627 h->non_got_ref = TRUE;
3631 case R_PPC_EMB_SDA2REL:
3634 bad_shared_reloc (abfd, r_type);
3637 if (htab->sdata[1].sym == NULL
3638 && !create_sdata_sym (info, &htab->sdata[1]))
3642 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3643 h->non_got_ref = TRUE;
3647 case R_PPC_EMB_SDA21:
3648 case R_PPC_EMB_RELSDA:
3651 bad_shared_reloc (abfd, r_type);
3654 if (htab->sdata[0].sym == NULL
3655 && !create_sdata_sym (info, &htab->sdata[0]))
3657 if (htab->sdata[1].sym == NULL
3658 && !create_sdata_sym (info, &htab->sdata[1]))
3662 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3663 h->non_got_ref = TRUE;
3667 case R_PPC_EMB_NADDR32:
3668 case R_PPC_EMB_NADDR16:
3669 case R_PPC_EMB_NADDR16_LO:
3670 case R_PPC_EMB_NADDR16_HI:
3671 case R_PPC_EMB_NADDR16_HA:
3674 bad_shared_reloc (abfd, r_type);
3678 h->non_got_ref = TRUE;
3681 case R_PPC_PLTREL24:
3686 case R_PPC_PLTREL32:
3687 case R_PPC_PLT16_LO:
3688 case R_PPC_PLT16_HI:
3689 case R_PPC_PLT16_HA:
3691 fprintf (stderr, "Reloc requires a PLT entry\n");
3693 /* This symbol requires a procedure linkage table entry. We
3694 actually build the entry in finish_dynamic_symbol,
3695 because this might be a case of linking PIC code without
3696 linking in any dynamic objects, in which case we don't
3697 need to generate a procedure linkage table after all. */
3701 /* It does not make sense to have a procedure linkage
3702 table entry for a local symbol. */
3703 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3707 (long) rel->r_offset,
3708 ppc_elf_howto_table[r_type]->name);
3709 bfd_set_error (bfd_error_bad_value);
3716 if (r_type == R_PPC_PLTREL24)
3718 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3720 addend = rel->r_addend;
3723 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
3728 /* The following relocations don't need to propagate the
3729 relocation if linking a shared object since they are
3730 section relative. */
3732 case R_PPC_SECTOFF_LO:
3733 case R_PPC_SECTOFF_HI:
3734 case R_PPC_SECTOFF_HA:
3735 case R_PPC_DTPREL16:
3736 case R_PPC_DTPREL16_LO:
3737 case R_PPC_DTPREL16_HI:
3738 case R_PPC_DTPREL16_HA:
3743 case R_PPC_REL16_LO:
3744 case R_PPC_REL16_HI:
3745 case R_PPC_REL16_HA:
3746 ppc_elf_tdata (abfd)->has_rel16 = 1;
3749 /* These are just markers. */
3751 case R_PPC_EMB_MRKREF:
3755 case R_PPC_RELAX_PLT:
3756 case R_PPC_RELAX_PLTREL24:
3759 /* These should only appear in dynamic objects. */
3761 case R_PPC_GLOB_DAT:
3762 case R_PPC_JMP_SLOT:
3763 case R_PPC_RELATIVE:
3764 case R_PPC_IRELATIVE:
3767 /* These aren't handled yet. We'll report an error later. */
3769 case R_PPC_EMB_RELSEC16:
3770 case R_PPC_EMB_RELST_LO:
3771 case R_PPC_EMB_RELST_HI:
3772 case R_PPC_EMB_RELST_HA:
3773 case R_PPC_EMB_BIT_FLD:
3776 /* This refers only to functions defined in the shared library. */
3777 case R_PPC_LOCAL24PC:
3778 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3780 htab->plt_type = PLT_OLD;
3781 htab->old_bfd = abfd;
3785 /* This relocation describes the C++ object vtable hierarchy.
3786 Reconstruct it for later use during GC. */
3787 case R_PPC_GNU_VTINHERIT:
3788 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3792 /* This relocation describes which C++ vtable entries are actually
3793 used. Record for later use during GC. */
3794 case R_PPC_GNU_VTENTRY:
3795 BFD_ASSERT (h != NULL);
3797 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3801 /* We shouldn't really be seeing these. */
3804 case R_PPC_TPREL16_LO:
3805 case R_PPC_TPREL16_HI:
3806 case R_PPC_TPREL16_HA:
3807 if (!info->executable)
3808 info->flags |= DF_STATIC_TLS;
3812 case R_PPC_DTPMOD32:
3813 case R_PPC_DTPREL32:
3819 && (sec->flags & SEC_CODE) != 0
3821 && htab->plt_type == PLT_UNSET)
3823 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3824 the start of a function, which assembles to a REL32
3825 reference to .got2. If we detect one of these, then
3826 force the old PLT layout because the linker cannot
3827 reliably deduce the GOT pointer value needed for
3830 Elf_Internal_Sym *isym;
3832 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3837 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3840 htab->plt_type = PLT_OLD;
3841 htab->old_bfd = abfd;
3844 if (h == NULL || h == htab->elf.hgot)
3850 case R_PPC_ADDR16_LO:
3851 case R_PPC_ADDR16_HI:
3852 case R_PPC_ADDR16_HA:
3855 if (h != NULL && !info->shared)
3857 /* We may need a plt entry if the symbol turns out to be
3858 a function defined in a dynamic object. */
3859 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3862 /* We may need a copy reloc too. */
3864 h->pointer_equality_needed = 1;
3870 case R_PPC_REL14_BRTAKEN:
3871 case R_PPC_REL14_BRNTAKEN:
3874 if (h == htab->elf.hgot)
3876 if (htab->plt_type == PLT_UNSET)
3878 htab->plt_type = PLT_OLD;
3879 htab->old_bfd = abfd;
3887 case R_PPC_ADDR14_BRTAKEN:
3888 case R_PPC_ADDR14_BRNTAKEN:
3889 if (h != NULL && !info->shared)
3891 /* We may need a plt entry if the symbol turns out to be
3892 a function defined in a dynamic object. */
3894 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3900 /* If we are creating a shared library, and this is a reloc
3901 against a global symbol, or a non PC relative reloc
3902 against a local symbol, then we need to copy the reloc
3903 into the shared library. However, if we are linking with
3904 -Bsymbolic, we do not need to copy a reloc against a
3905 global symbol which is defined in an object we are
3906 including in the link (i.e., DEF_REGULAR is set). At
3907 this point we have not seen all the input files, so it is
3908 possible that DEF_REGULAR is not set now but will be set
3909 later (it is never cleared). In case of a weak definition,
3910 DEF_REGULAR may be cleared later by a strong definition in
3911 a shared library. We account for that possibility below by
3912 storing information in the dyn_relocs field of the hash
3913 table entry. A similar situation occurs when creating
3914 shared libraries and symbol visibility changes render the
3917 If on the other hand, we are creating an executable, we
3918 may need to keep relocations for symbols satisfied by a
3919 dynamic library if we manage to avoid copy relocs for the
3922 && (must_be_dyn_reloc (info, r_type)
3924 && (! info->symbolic
3925 || h->root.type == bfd_link_hash_defweak
3926 || !h->def_regular))))
3927 || (ELIMINATE_COPY_RELOCS
3930 && (h->root.type == bfd_link_hash_defweak
3931 || !h->def_regular)))
3933 struct ppc_elf_dyn_relocs *p;
3934 struct ppc_elf_dyn_relocs **rel_head;
3938 "ppc_elf_check_relocs needs to "
3939 "create relocation for %s\n",
3940 (h && h->root.root.string
3941 ? h->root.root.string : "<unknown>"));
3945 if (htab->elf.dynobj == NULL)
3946 htab->elf.dynobj = abfd;
3948 sreloc = _bfd_elf_make_dynamic_reloc_section
3949 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3955 /* If this is a global symbol, we count the number of
3956 relocations we need for this symbol. */
3959 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
3963 /* Track dynamic relocs needed for local syms too.
3964 We really need local syms available to do this
3968 Elf_Internal_Sym *isym;
3970 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3975 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3979 vpp = &elf_section_data (s)->local_dynrel;
3980 rel_head = (struct ppc_elf_dyn_relocs **) vpp;
3984 if (p == NULL || p->sec != sec)
3986 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3989 p->next = *rel_head;
3997 if (!must_be_dyn_reloc (info, r_type))
4009 /* Merge object attributes from IBFD into OBFD. Raise an error if
4010 there are conflicting attributes. */
4012 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4014 obj_attribute *in_attr, *in_attrs;
4015 obj_attribute *out_attr, *out_attrs;
4017 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4019 /* This is the first object. Copy the attributes. */
4020 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4022 /* Use the Tag_null value to indicate the attributes have been
4024 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4029 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4030 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4032 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4033 non-conflicting ones. */
4034 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4035 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4036 if (in_attr->i != out_attr->i)
4039 if (out_attr->i == 0)
4040 out_attr->i = in_attr->i;
4041 else if (in_attr->i == 0)
4043 else if (out_attr->i == 1 && in_attr->i == 2)
4045 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4046 else if (out_attr->i == 1 && in_attr->i == 3)
4048 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4050 else if (out_attr->i == 3 && in_attr->i == 1)
4052 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4054 else if (out_attr->i == 3 && in_attr->i == 2)
4056 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4058 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4060 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4061 else if (in_attr->i > 3)
4063 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4067 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4071 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4072 merge non-conflicting ones. */
4073 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4074 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4075 if (in_attr->i != out_attr->i)
4077 const char *in_abi = NULL, *out_abi = NULL;
4081 case 1: in_abi = "generic"; break;
4082 case 2: in_abi = "AltiVec"; break;
4083 case 3: in_abi = "SPE"; break;
4086 switch (out_attr->i)
4088 case 1: out_abi = "generic"; break;
4089 case 2: out_abi = "AltiVec"; break;
4090 case 3: out_abi = "SPE"; break;
4094 if (out_attr->i == 0)
4095 out_attr->i = in_attr->i;
4096 else if (in_attr->i == 0)
4098 /* For now, allow generic to transition to AltiVec or SPE
4099 without a warning. If GCC marked files with their stack
4100 alignment and used don't-care markings for files which are
4101 not affected by the vector ABI, we could warn about this
4103 else if (out_attr->i == 1)
4104 out_attr->i = in_attr->i;
4105 else if (in_attr->i == 1)
4107 else if (in_abi == NULL)
4109 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4111 else if (out_abi == NULL)
4113 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4117 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4118 ibfd, obfd, in_abi, out_abi);
4121 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4122 and merge non-conflicting ones. */
4123 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4124 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4125 if (in_attr->i != out_attr->i)
4128 if (out_attr->i == 0)
4129 out_attr->i = in_attr->i;
4130 else if (in_attr->i == 0)
4132 else if (out_attr->i == 1 && in_attr->i == 2)
4134 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4135 else if (out_attr->i == 2 && in_attr->i == 1)
4137 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4138 else if (in_attr->i > 2)
4140 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4144 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4148 /* Merge Tag_compatibility attributes and any common GNU ones. */
4149 _bfd_elf_merge_object_attributes (ibfd, obfd);
4154 /* Merge backend specific data from an object file to the output
4155 object file when linking. */
4158 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4164 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4167 /* Check if we have the same endianess. */
4168 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4171 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4174 new_flags = elf_elfheader (ibfd)->e_flags;
4175 old_flags = elf_elfheader (obfd)->e_flags;
4176 if (!elf_flags_init (obfd))
4178 /* First call, no flags set. */
4179 elf_flags_init (obfd) = TRUE;
4180 elf_elfheader (obfd)->e_flags = new_flags;
4183 /* Compatible flags are ok. */
4184 else if (new_flags == old_flags)
4187 /* Incompatible flags. */
4190 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4191 to be linked with either. */
4193 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4194 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4197 (*_bfd_error_handler)
4198 (_("%B: compiled with -mrelocatable and linked with "
4199 "modules compiled normally"), ibfd);
4201 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4202 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4205 (*_bfd_error_handler)
4206 (_("%B: compiled normally and linked with "
4207 "modules compiled with -mrelocatable"), ibfd);
4210 /* The output is -mrelocatable-lib iff both the input files are. */
4211 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4212 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4214 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4215 but each input file is either -mrelocatable or -mrelocatable-lib. */
4216 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4217 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4218 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4219 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4221 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4222 any module uses it. */
4223 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4225 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4226 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4228 /* Warn about any other mismatches. */
4229 if (new_flags != old_flags)
4232 (*_bfd_error_handler)
4233 (_("%B: uses different e_flags (0x%lx) fields "
4234 "than previous modules (0x%lx)"),
4235 ibfd, (long) new_flags, (long) old_flags);
4240 bfd_set_error (bfd_error_bad_value);
4248 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4249 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4251 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4252 struct bfd_link_info *info,
4253 enum ppc_elf_plt_type plt_style,
4256 struct ppc_elf_link_hash_table *htab;
4259 htab = ppc_elf_hash_table (info);
4261 htab->emit_stub_syms = emit_stub_syms;
4263 if (htab->plt_type == PLT_UNSET)
4265 if (plt_style == PLT_OLD)
4266 htab->plt_type = PLT_OLD;
4270 enum ppc_elf_plt_type plt_type = plt_style;
4272 /* Look through the reloc flags left by ppc_elf_check_relocs.
4273 Use the old style bss plt if a file makes plt calls
4274 without using the new relocs, and if ld isn't given
4275 --secure-plt and we never see REL16 relocs. */
4276 if (plt_type == PLT_UNSET)
4278 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4279 if (is_ppc_elf (ibfd))
4281 if (ppc_elf_tdata (ibfd)->has_rel16)
4283 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4286 htab->old_bfd = ibfd;
4290 htab->plt_type = plt_type;
4293 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4294 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
4296 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4298 if (htab->plt_type == PLT_NEW)
4300 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4301 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4303 /* The new PLT is a loaded section. */
4304 if (htab->plt != NULL
4305 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4308 /* The new GOT is not executable. */
4309 if (htab->got != NULL
4310 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4315 /* Stop an unused .glink section from affecting .text alignment. */
4316 if (htab->glink != NULL
4317 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4320 return htab->plt_type == PLT_NEW;
4323 /* Return the section that should be marked against GC for a given
4327 ppc_elf_gc_mark_hook (asection *sec,
4328 struct bfd_link_info *info,
4329 Elf_Internal_Rela *rel,
4330 struct elf_link_hash_entry *h,
4331 Elf_Internal_Sym *sym)
4334 switch (ELF32_R_TYPE (rel->r_info))
4336 case R_PPC_GNU_VTINHERIT:
4337 case R_PPC_GNU_VTENTRY:
4341 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4344 /* Update the got, plt and dynamic reloc reference counts for the
4345 section being removed. */
4348 ppc_elf_gc_sweep_hook (bfd *abfd,
4349 struct bfd_link_info *info,
4351 const Elf_Internal_Rela *relocs)
4353 struct ppc_elf_link_hash_table *htab;
4354 Elf_Internal_Shdr *symtab_hdr;
4355 struct elf_link_hash_entry **sym_hashes;
4356 bfd_signed_vma *local_got_refcounts;
4357 const Elf_Internal_Rela *rel, *relend;
4360 if (info->relocatable)
4363 if ((sec->flags & SEC_ALLOC) == 0)
4366 elf_section_data (sec)->local_dynrel = NULL;
4368 htab = ppc_elf_hash_table (info);
4369 symtab_hdr = &elf_symtab_hdr (abfd);
4370 sym_hashes = elf_sym_hashes (abfd);
4371 local_got_refcounts = elf_local_got_refcounts (abfd);
4372 got2 = bfd_get_section_by_name (abfd, ".got2");
4374 relend = relocs + sec->reloc_count;
4375 for (rel = relocs; rel < relend; rel++)
4377 unsigned long r_symndx;
4378 enum elf_ppc_reloc_type r_type;
4379 struct elf_link_hash_entry *h = NULL;
4381 r_symndx = ELF32_R_SYM (rel->r_info);
4382 if (r_symndx >= symtab_hdr->sh_info)
4384 struct ppc_elf_dyn_relocs **pp, *p;
4385 struct ppc_elf_link_hash_entry *eh;
4387 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4388 while (h->root.type == bfd_link_hash_indirect
4389 || h->root.type == bfd_link_hash_warning)
4390 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4391 eh = (struct ppc_elf_link_hash_entry *) h;
4393 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4396 /* Everything must go for SEC. */
4402 r_type = ELF32_R_TYPE (rel->r_info);
4403 if (!htab->is_vxworks
4405 && local_got_refcounts != NULL
4407 || is_branch_reloc (r_type)))
4409 struct plt_entry **local_plt = (struct plt_entry **)
4410 (local_got_refcounts + symtab_hdr->sh_info);
4411 char *local_got_tls_masks = (char *)
4412 (local_plt + symtab_hdr->sh_info);
4413 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4415 struct plt_entry **ifunc = local_plt + r_symndx;
4417 struct plt_entry *ent;
4419 if (r_type == R_PPC_PLTREL24 && info->shared)
4420 addend = rel->r_addend;
4421 ent = find_plt_ent (ifunc, got2, addend);
4422 if (ent->plt.refcount > 0)
4423 ent->plt.refcount -= 1;
4430 case R_PPC_GOT_TLSLD16:
4431 case R_PPC_GOT_TLSLD16_LO:
4432 case R_PPC_GOT_TLSLD16_HI:
4433 case R_PPC_GOT_TLSLD16_HA:
4434 case R_PPC_GOT_TLSGD16:
4435 case R_PPC_GOT_TLSGD16_LO:
4436 case R_PPC_GOT_TLSGD16_HI:
4437 case R_PPC_GOT_TLSGD16_HA:
4438 case R_PPC_GOT_TPREL16:
4439 case R_PPC_GOT_TPREL16_LO:
4440 case R_PPC_GOT_TPREL16_HI:
4441 case R_PPC_GOT_TPREL16_HA:
4442 case R_PPC_GOT_DTPREL16:
4443 case R_PPC_GOT_DTPREL16_LO:
4444 case R_PPC_GOT_DTPREL16_HI:
4445 case R_PPC_GOT_DTPREL16_HA:
4447 case R_PPC_GOT16_LO:
4448 case R_PPC_GOT16_HI:
4449 case R_PPC_GOT16_HA:
4452 if (h->got.refcount > 0)
4456 struct plt_entry *ent;
4458 ent = find_plt_ent (&h->plt.plist, NULL, 0);
4459 if (ent != NULL && ent->plt.refcount > 0)
4460 ent->plt.refcount -= 1;
4463 else if (local_got_refcounts != NULL)
4465 if (local_got_refcounts[r_symndx] > 0)
4466 local_got_refcounts[r_symndx]--;
4472 case R_PPC_REL14_BRTAKEN:
4473 case R_PPC_REL14_BRNTAKEN:
4475 if (h == NULL || h == htab->elf.hgot)
4482 case R_PPC_ADDR16_LO:
4483 case R_PPC_ADDR16_HI:
4484 case R_PPC_ADDR16_HA:
4486 case R_PPC_ADDR14_BRTAKEN:
4487 case R_PPC_ADDR14_BRNTAKEN:
4494 case R_PPC_PLTREL24:
4495 case R_PPC_PLTREL32:
4496 case R_PPC_PLT16_LO:
4497 case R_PPC_PLT16_HI:
4498 case R_PPC_PLT16_HA:
4502 struct plt_entry *ent;
4504 if (r_type == R_PPC_PLTREL24 && info->shared)
4505 addend = rel->r_addend;
4506 ent = find_plt_ent (&h->plt.plist, got2, addend);
4507 if (ent != NULL && ent->plt.refcount > 0)
4508 ent->plt.refcount -= 1;
4519 /* Set plt output section type, htab->tls_get_addr, and call the
4520 generic ELF tls_setup function. */
4523 ppc_elf_tls_setup (bfd *obfd,
4524 struct bfd_link_info *info,
4525 int no_tls_get_addr_opt)
4527 struct ppc_elf_link_hash_table *htab;
4529 htab = ppc_elf_hash_table (info);
4530 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4531 FALSE, FALSE, TRUE);
4532 if (!no_tls_get_addr_opt)
4534 struct elf_link_hash_entry *opt, *tga;
4535 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
4536 FALSE, FALSE, TRUE);
4538 && (opt->root.type == bfd_link_hash_defined
4539 || opt->root.type == bfd_link_hash_defweak))
4541 /* If glibc supports an optimized __tls_get_addr call stub,
4542 signalled by the presence of __tls_get_addr_opt, and we'll
4543 be calling __tls_get_addr via a plt call stub, then
4544 make __tls_get_addr point to __tls_get_addr_opt. */
4545 tga = htab->tls_get_addr;
4546 if (htab->elf.dynamic_sections_created
4548 && (tga->type == STT_FUNC
4550 && !(SYMBOL_CALLS_LOCAL (info, tga)
4551 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
4552 && tga->root.type == bfd_link_hash_undefweak)))
4554 struct plt_entry *ent;
4555 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
4556 if (ent->plt.refcount > 0)
4560 tga->root.type = bfd_link_hash_indirect;
4561 tga->root.u.i.link = &opt->root;
4562 ppc_elf_copy_indirect_symbol (info, opt, tga);
4563 if (opt->dynindx != -1)
4565 /* Use __tls_get_addr_opt in dynamic relocations. */
4567 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4569 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
4572 htab->tls_get_addr = opt;
4577 no_tls_get_addr_opt = TRUE;
4579 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
4580 if (htab->plt_type == PLT_NEW
4581 && htab->plt != NULL
4582 && htab->plt->output_section != NULL)
4584 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4585 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4588 return _bfd_elf_tls_setup (obfd, info);
4591 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4595 branch_reloc_hash_match (const bfd *ibfd,
4596 const Elf_Internal_Rela *rel,
4597 const struct elf_link_hash_entry *hash)
4599 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4600 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4601 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4603 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
4605 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4606 struct elf_link_hash_entry *h;
4608 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4609 while (h->root.type == bfd_link_hash_indirect
4610 || h->root.type == bfd_link_hash_warning)
4611 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4618 /* Run through all the TLS relocs looking for optimization
4622 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4623 struct bfd_link_info *info)
4627 struct ppc_elf_link_hash_table *htab;
4630 if (info->relocatable || !info->executable)
4633 htab = ppc_elf_hash_table (info);
4634 /* Make two passes through the relocs. First time check that tls
4635 relocs involved in setting up a tls_get_addr call are indeed
4636 followed by such a call. If they are not, exclude them from
4637 the optimizations done on the second pass. */
4638 for (pass = 0; pass < 2; ++pass)
4639 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4641 Elf_Internal_Sym *locsyms = NULL;
4642 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4643 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
4645 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4646 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4648 Elf_Internal_Rela *relstart, *rel, *relend;
4650 /* Read the relocations. */
4651 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4653 if (relstart == NULL)
4656 relend = relstart + sec->reloc_count;
4657 for (rel = relstart; rel < relend; rel++)
4659 enum elf_ppc_reloc_type r_type;
4660 unsigned long r_symndx;
4661 struct elf_link_hash_entry *h = NULL;
4663 char tls_set, tls_clear;
4664 bfd_boolean is_local;
4665 int expecting_tls_get_addr;
4666 bfd_signed_vma *got_count;
4668 r_symndx = ELF32_R_SYM (rel->r_info);
4669 if (r_symndx >= symtab_hdr->sh_info)
4671 struct elf_link_hash_entry **sym_hashes;
4673 sym_hashes = elf_sym_hashes (ibfd);
4674 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4675 while (h->root.type == bfd_link_hash_indirect
4676 || h->root.type == bfd_link_hash_warning)
4677 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4680 expecting_tls_get_addr = 0;
4686 r_type = ELF32_R_TYPE (rel->r_info);
4689 case R_PPC_GOT_TLSLD16:
4690 case R_PPC_GOT_TLSLD16_LO:
4691 expecting_tls_get_addr = 1;
4694 case R_PPC_GOT_TLSLD16_HI:
4695 case R_PPC_GOT_TLSLD16_HA:
4696 /* These relocs should never be against a symbol
4697 defined in a shared lib. Leave them alone if
4698 that turns out to be the case. */
4707 case R_PPC_GOT_TLSGD16:
4708 case R_PPC_GOT_TLSGD16_LO:
4709 expecting_tls_get_addr = 1;
4712 case R_PPC_GOT_TLSGD16_HI:
4713 case R_PPC_GOT_TLSGD16_HA:
4719 tls_set = TLS_TLS | TLS_TPRELGD;
4723 case R_PPC_GOT_TPREL16:
4724 case R_PPC_GOT_TPREL16_LO:
4725 case R_PPC_GOT_TPREL16_HI:
4726 case R_PPC_GOT_TPREL16_HA:
4731 tls_clear = TLS_TPREL;
4739 expecting_tls_get_addr = 2;
4750 if (!expecting_tls_get_addr
4751 || (expecting_tls_get_addr == 1
4752 && !sec->has_tls_get_addr_call))
4755 if (rel + 1 < relend
4756 && branch_reloc_hash_match (ibfd, rel + 1,
4757 htab->tls_get_addr))
4760 /* Uh oh, we didn't find the expected call. We
4761 could just mark this symbol to exclude it
4762 from tls optimization but it's safer to skip
4763 the entire section. */
4764 sec->has_tls_reloc = 0;
4768 if (expecting_tls_get_addr)
4770 struct plt_entry *ent;
4774 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
4775 addend = rel[1].r_addend;
4776 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4778 if (ent != NULL && ent->plt.refcount > 0)
4779 ent->plt.refcount -= 1;
4781 if (expecting_tls_get_addr == 2)
4787 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4788 got_count = &h->got.refcount;
4792 bfd_signed_vma *lgot_refs;
4793 struct plt_entry **local_plt;
4796 if (locsyms == NULL)
4798 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4799 if (locsyms == NULL)
4800 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4801 symtab_hdr->sh_info,
4802 0, NULL, NULL, NULL);
4803 if (locsyms == NULL)
4805 if (elf_section_data (sec)->relocs != relstart)
4810 lgot_refs = elf_local_got_refcounts (ibfd);
4811 if (lgot_refs == NULL)
4813 local_plt = (struct plt_entry **)
4814 (lgot_refs + symtab_hdr->sh_info);
4815 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
4816 tls_mask = &lgot_masks[r_symndx];
4817 got_count = &lgot_refs[r_symndx];
4822 /* We managed to get rid of a got entry. */
4827 *tls_mask |= tls_set;
4828 *tls_mask &= ~tls_clear;
4831 if (elf_section_data (sec)->relocs != relstart)
4836 && (symtab_hdr->contents != (unsigned char *) locsyms))
4838 if (!info->keep_memory)
4841 symtab_hdr->contents = (unsigned char *) locsyms;
4847 /* Return true if we have dynamic relocs that apply to read-only sections. */
4850 readonly_dynrelocs (struct elf_link_hash_entry *h)
4852 struct ppc_elf_dyn_relocs *p;
4854 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4856 asection *s = p->sec->output_section;
4859 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4860 == (SEC_READONLY | SEC_ALLOC)))
4866 /* Adjust a symbol defined by a dynamic object and referenced by a
4867 regular object. The current definition is in some section of the
4868 dynamic object, but we're not including those sections. We have to
4869 change the definition to something the rest of the link can
4873 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4874 struct elf_link_hash_entry *h)
4876 struct ppc_elf_link_hash_table *htab;
4880 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4881 h->root.root.string);
4884 /* Make sure we know what is going on here. */
4885 htab = ppc_elf_hash_table (info);
4886 BFD_ASSERT (htab->elf.dynobj != NULL
4888 || h->type == STT_GNU_IFUNC
4889 || h->u.weakdef != NULL
4892 && !h->def_regular)));
4894 /* Deal with function syms. */
4895 if (h->type == STT_FUNC
4896 || h->type == STT_GNU_IFUNC
4899 /* Clear procedure linkage table information for any symbol that
4900 won't need a .plt entry. */
4901 struct plt_entry *ent;
4902 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4903 if (ent->plt.refcount > 0)
4906 || (h->type != STT_GNU_IFUNC
4907 && (SYMBOL_CALLS_LOCAL (info, h)
4908 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4909 && h->root.type == bfd_link_hash_undefweak))))
4911 /* A PLT entry is not required/allowed when:
4913 1. We are not using ld.so; because then the PLT entry
4914 can't be set up, so we can't use one. In this case,
4915 ppc_elf_adjust_dynamic_symbol won't even be called.
4917 2. GC has rendered the entry unused.
4919 3. We know for certain that a call to this symbol
4920 will go to this object, or will remain undefined. */
4921 h->plt.plist = NULL;
4926 /* After adjust_dynamic_symbol, non_got_ref set in the
4927 non-shared case means that we have allocated space in
4928 .dynbss for the symbol and thus dyn_relocs for this
4929 symbol should be discarded.
4930 If we get here we know we are making a PLT entry for this
4931 symbol, and in an executable we'd normally resolve
4932 relocations against this symbol to the PLT entry. Allow
4933 dynamic relocs if the reference is weak, and the dynamic
4934 relocs will not cause text relocation. */
4935 if (!h->ref_regular_nonweak
4937 && h->type != STT_GNU_IFUNC
4938 && !htab->is_vxworks
4939 && !ppc_elf_hash_entry (h)->has_sda_refs
4940 && !readonly_dynrelocs (h))
4946 h->plt.plist = NULL;
4948 /* If this is a weak symbol, and there is a real definition, the
4949 processor independent code will have arranged for us to see the
4950 real definition first, and we can just use the same value. */
4951 if (h->u.weakdef != NULL)
4953 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4954 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4955 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4956 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4957 if (ELIMINATE_COPY_RELOCS)
4958 h->non_got_ref = h->u.weakdef->non_got_ref;
4962 /* This is a reference to a symbol defined by a dynamic object which
4963 is not a function. */
4965 /* If we are creating a shared library, we must presume that the
4966 only references to the symbol are via the global offset table.
4967 For such cases we need not do anything here; the relocations will
4968 be handled correctly by relocate_section. */
4972 /* If there are no references to this symbol that do not use the
4973 GOT, we don't need to generate a copy reloc. */
4974 if (!h->non_got_ref)
4977 /* If we didn't find any dynamic relocs in read-only sections, then
4978 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4979 We can't do this if there are any small data relocations. This
4980 doesn't work on VxWorks, where we can not have dynamic
4981 relocations (other than copy and jump slot relocations) in an
4983 if (ELIMINATE_COPY_RELOCS
4984 && !ppc_elf_hash_entry (h)->has_sda_refs
4985 && !htab->is_vxworks
4987 && !readonly_dynrelocs (h))
4995 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4996 h->root.root.string);
5000 /* We must allocate the symbol in our .dynbss section, which will
5001 become part of the .bss section of the executable. There will be
5002 an entry for this symbol in the .dynsym section. The dynamic
5003 object will contain position independent code, so all references
5004 from the dynamic object to this symbol will go through the global
5005 offset table. The dynamic linker will use the .dynsym entry to
5006 determine the address it must put in the global offset table, so
5007 both the dynamic object and the regular object will refer to the
5008 same memory location for the variable.
5010 Of course, if the symbol is referenced using SDAREL relocs, we
5011 must instead allocate it in .sbss. */
5013 if (ppc_elf_hash_entry (h)->has_sda_refs)
5017 BFD_ASSERT (s != NULL);
5019 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5020 copy the initial value out of the dynamic object and into the
5021 runtime process image. We need to remember the offset into the
5022 .rela.bss section we are going to use. */
5023 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5027 if (ppc_elf_hash_entry (h)->has_sda_refs)
5028 srel = htab->relsbss;
5030 srel = htab->relbss;
5031 BFD_ASSERT (srel != NULL);
5032 srel->size += sizeof (Elf32_External_Rela);
5036 return _bfd_elf_adjust_dynamic_copy (h, s);
5039 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5040 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5041 specifying the addend on the plt relocation. For -fpic code, the sym
5042 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5043 xxxxxxxx.got2.plt_pic32.<callee>. */
5046 add_stub_sym (struct plt_entry *ent,
5047 struct elf_link_hash_entry *h,
5048 struct bfd_link_info *info)
5050 struct elf_link_hash_entry *sh;
5051 size_t len1, len2, len3;
5054 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5057 stub = ".plt_pic32.";
5059 stub = ".plt_call32.";
5061 len1 = strlen (h->root.root.string);
5062 len2 = strlen (stub);
5065 len3 = strlen (ent->sec->name);
5066 name = bfd_malloc (len1 + len2 + len3 + 9);
5069 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5071 memcpy (name + 8, ent->sec->name, len3);
5072 memcpy (name + 8 + len3, stub, len2);
5073 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5074 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5077 if (sh->root.type == bfd_link_hash_new)
5079 sh->root.type = bfd_link_hash_defined;
5080 sh->root.u.def.section = htab->glink;
5081 sh->root.u.def.value = ent->glink_offset;
5082 sh->ref_regular = 1;
5083 sh->def_regular = 1;
5084 sh->ref_regular_nonweak = 1;
5085 sh->forced_local = 1;
5091 /* Allocate NEED contiguous space in .got, and return the offset.
5092 Handles allocation of the got header when crossing 32k. */
5095 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5098 unsigned int max_before_header;
5100 if (htab->plt_type == PLT_VXWORKS)
5102 where = htab->got->size;
5103 htab->got->size += need;
5107 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5108 if (need <= htab->got_gap)
5110 where = max_before_header - htab->got_gap;
5111 htab->got_gap -= need;
5115 if (htab->got->size + need > max_before_header
5116 && htab->got->size <= max_before_header)
5118 htab->got_gap = max_before_header - htab->got->size;
5119 htab->got->size = max_before_header + htab->got_header_size;
5121 where = htab->got->size;
5122 htab->got->size += need;
5128 /* Allocate space in associated reloc sections for dynamic relocs. */
5131 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5133 struct bfd_link_info *info = inf;
5134 struct ppc_elf_link_hash_entry *eh;
5135 struct ppc_elf_link_hash_table *htab;
5136 struct ppc_elf_dyn_relocs *p;
5138 if (h->root.type == bfd_link_hash_indirect)
5141 if (h->root.type == bfd_link_hash_warning)
5142 /* When warning symbols are created, they **replace** the "real"
5143 entry in the hash table, thus we never get to see the real
5144 symbol in a hash traversal. So look at it now. */
5145 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5147 htab = ppc_elf_hash_table (info);
5148 if (htab->elf.dynamic_sections_created
5149 || h->type == STT_GNU_IFUNC)
5151 struct plt_entry *ent;
5152 bfd_boolean doneone = FALSE;
5153 bfd_vma plt_offset = 0, glink_offset = 0;
5156 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5157 if (ent->plt.refcount > 0)
5159 /* Make sure this symbol is output as a dynamic symbol. */
5160 if (h->dynindx == -1
5163 && htab->elf.dynamic_sections_created)
5165 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5169 dyn = htab->elf.dynamic_sections_created;
5171 || h->type == STT_GNU_IFUNC
5172 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5174 asection *s = htab->plt;
5175 if (!dyn || h->dynindx == -1)
5178 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5182 plt_offset = s->size;
5185 ent->plt.offset = plt_offset;
5188 if (!doneone || info->shared)
5190 glink_offset = s->size;
5191 s->size += GLINK_ENTRY_SIZE;
5192 if (h == htab->tls_get_addr
5193 && !htab->no_tls_get_addr_opt)
5194 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5201 h->root.u.def.section = s;
5202 h->root.u.def.value = glink_offset;
5204 ent->glink_offset = glink_offset;
5206 if (htab->emit_stub_syms
5207 && !add_stub_sym (ent, h, info))
5214 /* If this is the first .plt entry, make room
5215 for the special first entry. */
5217 s->size += htab->plt_initial_entry_size;
5219 /* The PowerPC PLT is actually composed of two
5220 parts, the first part is 2 words (for a load
5221 and a jump), and then there is a remaining
5222 word available at the end. */
5223 plt_offset = (htab->plt_initial_entry_size
5224 + (htab->plt_slot_size
5226 - htab->plt_initial_entry_size)
5227 / htab->plt_entry_size)));
5229 /* If this symbol is not defined in a regular
5230 file, and we are not generating a shared
5231 library, then set the symbol to this location
5232 in the .plt. This is to avoid text
5233 relocations, and is required to make
5234 function pointers compare as equal between
5235 the normal executable and the shared library. */
5240 h->root.u.def.section = s;
5241 h->root.u.def.value = plt_offset;
5244 /* Make room for this entry. */
5245 s->size += htab->plt_entry_size;
5246 /* After the 8192nd entry, room for two entries
5248 if (htab->plt_type == PLT_OLD
5249 && (s->size - htab->plt_initial_entry_size)
5250 / htab->plt_entry_size
5251 > PLT_NUM_SINGLE_ENTRIES)
5252 s->size += htab->plt_entry_size;
5254 ent->plt.offset = plt_offset;
5257 /* We also need to make an entry in the .rela.plt section. */
5260 if (!htab->elf.dynamic_sections_created
5261 || h->dynindx == -1)
5262 htab->reliplt->size += sizeof (Elf32_External_Rela);
5265 htab->relplt->size += sizeof (Elf32_External_Rela);
5267 if (htab->plt_type == PLT_VXWORKS)
5269 /* Allocate space for the unloaded relocations. */
5271 && htab->elf.dynamic_sections_created)
5274 == (bfd_vma) htab->plt_initial_entry_size)
5276 htab->srelplt2->size
5277 += (sizeof (Elf32_External_Rela)
5278 * VXWORKS_PLTRESOLVE_RELOCS);
5281 htab->srelplt2->size
5282 += (sizeof (Elf32_External_Rela)
5283 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5286 /* Every PLT entry has an associated GOT entry in
5288 htab->sgotplt->size += 4;
5295 ent->plt.offset = (bfd_vma) -1;
5298 ent->plt.offset = (bfd_vma) -1;
5302 h->plt.plist = NULL;
5308 h->plt.plist = NULL;
5312 eh = (struct ppc_elf_link_hash_entry *) h;
5313 if (eh->elf.got.refcount > 0)
5318 /* Make sure this symbol is output as a dynamic symbol. */
5319 if (eh->elf.dynindx == -1
5320 && !eh->elf.forced_local
5321 && eh->elf.type != STT_GNU_IFUNC
5322 && htab->elf.dynamic_sections_created)
5324 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5329 if ((eh->tls_mask & TLS_TLS) != 0)
5331 if ((eh->tls_mask & TLS_LD) != 0)
5333 if (!eh->elf.def_dynamic)
5334 /* We'll just use htab->tlsld_got.offset. This should
5335 always be the case. It's a little odd if we have
5336 a local dynamic reloc against a non-local symbol. */
5337 htab->tlsld_got.refcount += 1;
5341 if ((eh->tls_mask & TLS_GD) != 0)
5343 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5345 if ((eh->tls_mask & TLS_DTPREL) != 0)
5351 eh->elf.got.offset = (bfd_vma) -1;
5354 eh->elf.got.offset = allocate_got (htab, need);
5355 dyn = htab->elf.dynamic_sections_created;
5357 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5358 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5359 || eh->elf.root.type != bfd_link_hash_undefweak))
5361 asection *rsec = htab->relgot;
5362 /* All the entries we allocated need relocs.
5363 Except LD only needs one. */
5364 if ((eh->tls_mask & TLS_LD) != 0
5365 && eh->elf.def_dynamic)
5367 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5372 eh->elf.got.offset = (bfd_vma) -1;
5374 if (eh->dyn_relocs == NULL
5375 || !htab->elf.dynamic_sections_created)
5378 /* In the shared -Bsymbolic case, discard space allocated for
5379 dynamic pc-relative relocs against symbols which turn out to be
5380 defined in regular objects. For the normal shared case, discard
5381 space for relocs that have become local due to symbol visibility
5386 /* Relocs that use pc_count are those that appear on a call insn,
5387 or certain REL relocs (see must_be_dyn_reloc) that can be
5388 generated via assembly. We want calls to protected symbols to
5389 resolve directly to the function rather than going via the plt.
5390 If people want function pointer comparisons to work as expected
5391 then they should avoid writing weird assembly. */
5392 if (SYMBOL_CALLS_LOCAL (info, h))
5394 struct ppc_elf_dyn_relocs **pp;
5396 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5398 p->count -= p->pc_count;
5407 if (htab->is_vxworks)
5409 struct ppc_elf_dyn_relocs **pp;
5411 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5413 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5420 /* Discard relocs on undefined symbols that must be local. */
5421 if (eh->dyn_relocs != NULL
5422 && h->root.type == bfd_link_hash_undefined
5423 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5424 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5425 eh->dyn_relocs = NULL;
5427 /* Also discard relocs on undefined weak syms with non-default
5429 if (eh->dyn_relocs != NULL
5430 && h->root.type == bfd_link_hash_undefweak)
5432 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5433 eh->dyn_relocs = NULL;
5435 /* Make sure undefined weak symbols are output as a dynamic
5437 else if (h->dynindx == -1
5441 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5446 else if (ELIMINATE_COPY_RELOCS)
5448 /* For the non-shared case, discard space for relocs against
5449 symbols which turn out to need copy relocs or are not
5455 /* Make sure this symbol is output as a dynamic symbol.
5456 Undefined weak syms won't yet be marked as dynamic. */
5457 if (h->dynindx == -1
5458 && !h->forced_local)
5460 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5464 /* If that succeeded, we know we'll be keeping all the
5466 if (h->dynindx != -1)
5470 eh->dyn_relocs = NULL;
5475 /* Finally, allocate space. */
5476 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5478 asection *sreloc = elf_section_data (p->sec)->sreloc;
5479 if (!htab->elf.dynamic_sections_created)
5480 sreloc = htab->reliplt;
5481 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5487 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5488 read-only sections. */
5491 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5493 if (h->root.type == bfd_link_hash_indirect)
5496 if (h->root.type == bfd_link_hash_warning)
5497 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5499 if (readonly_dynrelocs (h))
5501 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5503 /* Not an error, just cut short the traversal. */
5509 /* Set the sizes of the dynamic sections. */
5512 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5513 struct bfd_link_info *info)
5515 struct ppc_elf_link_hash_table *htab;
5521 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5524 htab = ppc_elf_hash_table (info);
5525 BFD_ASSERT (htab->elf.dynobj != NULL);
5527 if (elf_hash_table (info)->dynamic_sections_created)
5529 /* Set the contents of the .interp section to the interpreter. */
5530 if (info->executable)
5532 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5533 BFD_ASSERT (s != NULL);
5534 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5535 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5539 if (htab->plt_type == PLT_OLD)
5540 htab->got_header_size = 16;
5541 else if (htab->plt_type == PLT_NEW)
5542 htab->got_header_size = 12;
5544 /* Set up .got offsets for local syms, and space for local dynamic
5546 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5548 bfd_signed_vma *local_got;
5549 bfd_signed_vma *end_local_got;
5550 struct plt_entry **local_plt;
5551 struct plt_entry **end_local_plt;
5553 bfd_size_type locsymcount;
5554 Elf_Internal_Shdr *symtab_hdr;
5556 if (!is_ppc_elf (ibfd))
5559 for (s = ibfd->sections; s != NULL; s = s->next)
5561 struct ppc_elf_dyn_relocs *p;
5563 for (p = ((struct ppc_elf_dyn_relocs *)
5564 elf_section_data (s)->local_dynrel);
5568 if (!bfd_is_abs_section (p->sec)
5569 && bfd_is_abs_section (p->sec->output_section))
5571 /* Input section has been discarded, either because
5572 it is a copy of a linkonce section or due to
5573 linker script /DISCARD/, so we'll be discarding
5576 else if (htab->is_vxworks
5577 && strcmp (p->sec->output_section->name,
5580 /* Relocations in vxworks .tls_vars sections are
5581 handled specially by the loader. */
5583 else if (p->count != 0)
5585 asection *sreloc = elf_section_data (p->sec)->sreloc;
5586 if (!htab->elf.dynamic_sections_created)
5587 sreloc = htab->reliplt;
5588 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5589 if ((p->sec->output_section->flags
5590 & (SEC_READONLY | SEC_ALLOC))
5591 == (SEC_READONLY | SEC_ALLOC))
5592 info->flags |= DF_TEXTREL;
5597 local_got = elf_local_got_refcounts (ibfd);
5601 symtab_hdr = &elf_symtab_hdr (ibfd);
5602 locsymcount = symtab_hdr->sh_info;
5603 end_local_got = local_got + locsymcount;
5604 local_plt = (struct plt_entry **) end_local_got;
5605 end_local_plt = local_plt + locsymcount;
5606 lgot_masks = (char *) end_local_plt;
5608 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5611 unsigned int need = 0;
5612 if ((*lgot_masks & TLS_TLS) != 0)
5614 if ((*lgot_masks & TLS_GD) != 0)
5616 if ((*lgot_masks & TLS_LD) != 0)
5617 htab->tlsld_got.refcount += 1;
5618 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5620 if ((*lgot_masks & TLS_DTPREL) != 0)
5626 *local_got = (bfd_vma) -1;
5629 *local_got = allocate_got (htab, need);
5631 htab->relgot->size += (need
5632 * (sizeof (Elf32_External_Rela) / 4));
5636 *local_got = (bfd_vma) -1;
5638 if (htab->is_vxworks)
5641 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5642 for (; local_plt < end_local_plt; ++local_plt)
5644 struct plt_entry *ent;
5645 bfd_boolean doneone = FALSE;
5646 bfd_vma plt_offset = 0, glink_offset = 0;
5648 for (ent = *local_plt; ent != NULL; ent = ent->next)
5649 if (ent->plt.refcount > 0)
5655 plt_offset = s->size;
5658 ent->plt.offset = plt_offset;
5661 if (!doneone || info->shared)
5663 glink_offset = s->size;
5664 s->size += GLINK_ENTRY_SIZE;
5666 ent->glink_offset = glink_offset;
5670 htab->reliplt->size += sizeof (Elf32_External_Rela);
5675 ent->plt.offset = (bfd_vma) -1;
5679 /* Allocate space for global sym dynamic relocs. */
5680 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5682 if (htab->tlsld_got.refcount > 0)
5684 htab->tlsld_got.offset = allocate_got (htab, 8);
5686 htab->relgot->size += sizeof (Elf32_External_Rela);
5689 htab->tlsld_got.offset = (bfd_vma) -1;
5691 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5693 unsigned int g_o_t = 32768;
5695 /* If we haven't allocated the header, do so now. When we get here,
5696 for old plt/got the got size will be 0 to 32764 (not allocated),
5697 or 32780 to 65536 (header allocated). For new plt/got, the
5698 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5699 if (htab->got->size <= 32768)
5701 g_o_t = htab->got->size;
5702 if (htab->plt_type == PLT_OLD)
5704 htab->got->size += htab->got_header_size;
5707 htab->elf.hgot->root.u.def.value = g_o_t;
5711 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
5713 && !(sda->root.type == bfd_link_hash_defined
5714 || sda->root.type == bfd_link_hash_defweak))
5716 sda->root.type = bfd_link_hash_defined;
5717 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
5718 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
5722 if (htab->glink != NULL
5723 && htab->glink->size != 0
5724 && htab->elf.dynamic_sections_created)
5726 htab->glink_pltresolve = htab->glink->size;
5727 /* Space for the branch table. */
5728 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5729 /* Pad out to align the start of PLTresolve. */
5730 htab->glink->size += -htab->glink->size & 15;
5731 htab->glink->size += GLINK_PLTRESOLVE;
5733 if (htab->emit_stub_syms)
5735 struct elf_link_hash_entry *sh;
5736 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5737 TRUE, FALSE, FALSE);
5740 if (sh->root.type == bfd_link_hash_new)
5742 sh->root.type = bfd_link_hash_defined;
5743 sh->root.u.def.section = htab->glink;
5744 sh->root.u.def.value = htab->glink_pltresolve;
5745 sh->ref_regular = 1;
5746 sh->def_regular = 1;
5747 sh->ref_regular_nonweak = 1;
5748 sh->forced_local = 1;
5751 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5752 TRUE, FALSE, FALSE);
5755 if (sh->root.type == bfd_link_hash_new)
5757 sh->root.type = bfd_link_hash_defined;
5758 sh->root.u.def.section = htab->glink;
5759 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5760 sh->ref_regular = 1;
5761 sh->def_regular = 1;
5762 sh->ref_regular_nonweak = 1;
5763 sh->forced_local = 1;
5769 /* We've now determined the sizes of the various dynamic sections.
5770 Allocate memory for them. */
5772 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5774 bfd_boolean strip_section = TRUE;
5776 if ((s->flags & SEC_LINKER_CREATED) == 0)
5782 /* We'd like to strip these sections if they aren't needed, but if
5783 we've exported dynamic symbols from them we must leave them.
5784 It's too late to tell BFD to get rid of the symbols. */
5785 if (htab->elf.hplt != NULL)
5786 strip_section = FALSE;
5787 /* Strip this section if we don't need it; see the
5790 else if (s == htab->iplt
5792 || s == htab->sgotplt
5794 || s == htab->dynbss
5795 || s == htab->dynsbss
5796 || s == htab->sdata[0].section
5797 || s == htab->sdata[1].section)
5799 /* Strip these too. */
5801 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5805 /* Remember whether there are any relocation sections. */
5808 /* We use the reloc_count field as a counter if we need
5809 to copy relocs into the output file. */
5815 /* It's not one of our sections, so don't allocate space. */
5819 if (s->size == 0 && strip_section)
5821 /* If we don't need this section, strip it from the
5822 output file. This is mostly to handle .rela.bss and
5823 .rela.plt. We must create both sections in
5824 create_dynamic_sections, because they must be created
5825 before the linker maps input sections to output
5826 sections. The linker does that before
5827 adjust_dynamic_symbol is called, and it is that
5828 function which decides whether anything needs to go
5829 into these sections. */
5830 s->flags |= SEC_EXCLUDE;
5834 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5837 /* Allocate memory for the section contents. */
5838 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5839 if (s->contents == NULL)
5843 if (htab->elf.dynamic_sections_created)
5845 /* Add some entries to the .dynamic section. We fill in the
5846 values later, in ppc_elf_finish_dynamic_sections, but we
5847 must add the entries now so that we get the correct size for
5848 the .dynamic section. The DT_DEBUG entry is filled in by the
5849 dynamic linker and used by the debugger. */
5850 #define add_dynamic_entry(TAG, VAL) \
5851 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5853 if (info->executable)
5855 if (!add_dynamic_entry (DT_DEBUG, 0))
5859 if (htab->plt != NULL && htab->plt->size != 0)
5861 if (!add_dynamic_entry (DT_PLTGOT, 0)
5862 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5863 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5864 || !add_dynamic_entry (DT_JMPREL, 0))
5868 if (htab->glink != NULL && htab->glink->size != 0)
5870 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5872 if (!htab->no_tls_get_addr_opt
5873 && htab->tls_get_addr != NULL
5874 && htab->tls_get_addr->plt.plist != NULL
5875 && !add_dynamic_entry (DT_PPC_TLSOPT, 0))
5881 if (!add_dynamic_entry (DT_RELA, 0)
5882 || !add_dynamic_entry (DT_RELASZ, 0)
5883 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5887 /* If any dynamic relocs apply to a read-only section, then we
5888 need a DT_TEXTREL entry. */
5889 if ((info->flags & DF_TEXTREL) == 0)
5890 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5893 if ((info->flags & DF_TEXTREL) != 0)
5895 if (!add_dynamic_entry (DT_TEXTREL, 0))
5898 if (htab->is_vxworks
5899 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5902 #undef add_dynamic_entry
5907 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5910 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5912 if (h->plt.plist != NULL
5914 && (!h->pointer_equality_needed
5915 || !h->ref_regular_nonweak))
5918 return _bfd_elf_hash_symbol (h);
5921 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5923 /* Relaxation trampolines. r12 is available for clobbering (r11, is
5924 used for some functions that are allowed to break the ABI). */
5925 static const int shared_stub_entry[] =
5927 0x7c0802a6, /* mflr 0 */
5928 0x429f0005, /* bcl 20, 31, .Lxxx */
5929 0x7d8802a6, /* mflr 12 */
5930 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
5931 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
5932 0x7c0803a6, /* mtlr 0 */
5933 0x7d8903a6, /* mtctr 12 */
5934 0x4e800420, /* bctr */
5937 static const int stub_entry[] =
5939 0x3d800000, /* lis 12,xxx@ha */
5940 0x398c0000, /* addi 12,12,xxx@l */
5941 0x7d8903a6, /* mtctr 12 */
5942 0x4e800420, /* bctr */
5946 ppc_elf_relax_section (bfd *abfd,
5948 struct bfd_link_info *link_info,
5953 struct one_fixup *next;
5955 /* Final link, can use the symbol offset. For a
5956 relocatable link we use the symbol's index. */
5961 Elf_Internal_Shdr *symtab_hdr;
5962 bfd_byte *contents = NULL;
5963 Elf_Internal_Sym *isymbuf = NULL;
5964 Elf_Internal_Rela *internal_relocs = NULL;
5965 Elf_Internal_Rela *irel, *irelend;
5966 struct one_fixup *fixups = NULL;
5967 unsigned changes = 0;
5968 struct ppc_elf_link_hash_table *htab;
5969 bfd_size_type trampoff;
5971 bfd_boolean maybe_pasted;
5975 /* Nothing to do if there are no relocations, and no need to do
5976 anything with non-alloc or non-code sections. */
5977 if ((isec->flags & SEC_ALLOC) == 0
5978 || (isec->flags & SEC_CODE) == 0
5979 || (isec->flags & SEC_RELOC) == 0
5980 || isec->reloc_count == 0)
5983 /* We cannot represent the required PIC relocs in the output, so don't
5984 do anything. The linker doesn't support mixing -shared and -r
5986 if (link_info->relocatable && link_info->shared)
5989 trampoff = (isec->size + 3) & (bfd_vma) -4;
5990 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
5991 || strcmp (isec->output_section->name, ".fini") == 0);
5992 /* Space for a branch around any trampolines. */
5996 symtab_hdr = &elf_symtab_hdr (abfd);
5998 /* Get a copy of the native relocations. */
5999 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6000 link_info->keep_memory);
6001 if (internal_relocs == NULL)
6004 htab = ppc_elf_hash_table (link_info);
6005 got2 = bfd_get_section_by_name (abfd, ".got2");
6007 irelend = internal_relocs + isec->reloc_count;
6008 for (irel = internal_relocs; irel < irelend; irel++)
6010 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6013 struct one_fixup *f;
6014 size_t insn_offset = 0;
6015 bfd_vma max_branch_offset, val;
6018 struct elf_link_hash_entry *h;
6019 struct plt_entry **plist;
6020 unsigned char sym_type;
6025 case R_PPC_LOCAL24PC:
6026 case R_PPC_PLTREL24:
6027 max_branch_offset = 1 << 25;
6031 case R_PPC_REL14_BRTAKEN:
6032 case R_PPC_REL14_BRNTAKEN:
6033 max_branch_offset = 1 << 15;
6040 /* Get the value of the symbol referred to by the reloc. */
6042 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6044 /* A local symbol. */
6045 Elf_Internal_Sym *isym;
6047 /* Read this BFD's local symbols. */
6048 if (isymbuf == NULL)
6050 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6051 if (isymbuf == NULL)
6052 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6053 symtab_hdr->sh_info, 0,
6058 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6059 if (isym->st_shndx == SHN_UNDEF)
6060 tsec = bfd_und_section_ptr;
6061 else if (isym->st_shndx == SHN_ABS)
6062 tsec = bfd_abs_section_ptr;
6063 else if (isym->st_shndx == SHN_COMMON)
6064 tsec = bfd_com_section_ptr;
6066 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6068 toff = isym->st_value;
6069 sym_type = ELF_ST_TYPE (isym->st_info);
6073 /* Global symbol handling. */
6076 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6077 h = elf_sym_hashes (abfd)[indx];
6079 while (h->root.type == bfd_link_hash_indirect
6080 || h->root.type == bfd_link_hash_warning)
6081 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6083 if (h->root.type == bfd_link_hash_defined
6084 || h->root.type == bfd_link_hash_defweak)
6086 tsec = h->root.u.def.section;
6087 toff = h->root.u.def.value;
6089 else if (h->root.type == bfd_link_hash_undefined
6090 || h->root.type == bfd_link_hash_undefweak)
6092 tsec = bfd_und_section_ptr;
6093 toff = link_info->relocatable ? indx : 0;
6101 /* The condition here under which we call find_plt_ent must
6102 match that in relocate_section. If we call find_plt_ent here
6103 but not in relocate_section, or vice versa, then the branch
6104 destination used here may be incorrect. */
6108 /* We know is_branch_reloc (r_type) is true. */
6109 if (h->type == STT_GNU_IFUNC
6110 || r_type == R_PPC_PLTREL24)
6111 plist = &h->plt.plist;
6113 else if (sym_type == STT_GNU_IFUNC
6114 && elf_local_got_offsets (abfd) != NULL)
6116 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6117 struct plt_entry **local_plt = (struct plt_entry **)
6118 (local_got_offsets + symtab_hdr->sh_info);
6119 plist = local_plt + ELF32_R_SYM (irel->r_info);
6124 struct plt_entry *ent;
6126 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6127 addend = irel->r_addend;
6128 ent = find_plt_ent (plist, got2, addend);
6131 if (htab->plt_type == PLT_NEW
6133 || !htab->elf.dynamic_sections_created
6134 || h->dynindx == -1)
6137 toff = ent->glink_offset;
6142 toff = ent->plt.offset;
6147 /* If the branch and target are in the same section, you have
6148 no hope of adding stubs. We'll error out later should the
6153 /* There probably isn't any reason to handle symbols in
6154 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6155 attribute for a code section, and we are only looking at
6156 branches. However, implement it correctly here as a
6157 reference for other target relax_section functions. */
6158 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6160 /* At this stage in linking, no SEC_MERGE symbol has been
6161 adjusted, so all references to such symbols need to be
6162 passed through _bfd_merged_section_offset. (Later, in
6163 relocate_section, all SEC_MERGE symbols *except* for
6164 section symbols have been adjusted.)
6166 gas may reduce relocations against symbols in SEC_MERGE
6167 sections to a relocation against the section symbol when
6168 the original addend was zero. When the reloc is against
6169 a section symbol we should include the addend in the
6170 offset passed to _bfd_merged_section_offset, since the
6171 location of interest is the original symbol. On the
6172 other hand, an access to "sym+addend" where "sym" is not
6173 a section symbol should not include the addend; Such an
6174 access is presumed to be an offset from "sym"; The
6175 location of interest is just "sym". */
6176 if (sym_type == STT_SECTION)
6177 toff += irel->r_addend;
6179 toff = _bfd_merged_section_offset (abfd, &tsec,
6180 elf_section_data (tsec)->sec_info,
6183 if (sym_type != STT_SECTION)
6184 toff += irel->r_addend;
6186 /* PLTREL24 addends are special. */
6187 else if (r_type != R_PPC_PLTREL24)
6188 toff += irel->r_addend;
6190 /* Attempted -shared link of non-pic code loses. */
6191 if (tsec->output_section == NULL)
6194 roff = irel->r_offset;
6196 /* If the branch is in range, no need to do anything. */
6197 if (tsec != bfd_und_section_ptr
6198 && (!link_info->relocatable
6199 /* A relocatable link may have sections moved during
6200 final link, so do not presume they remain in range. */
6201 || tsec->output_section == isec->output_section))
6203 bfd_vma symaddr, reladdr;
6205 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6206 reladdr = isec->output_section->vma + isec->output_offset + roff;
6207 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6211 /* Look for an existing fixup to this address. */
6212 for (f = fixups; f ; f = f->next)
6213 if (f->tsec == tsec && f->toff == toff)
6219 unsigned long stub_rtype;
6221 val = trampoff - roff;
6222 if (val >= max_branch_offset)
6223 /* Oh dear, we can't reach a trampoline. Don't try to add
6224 one. We'll report an error later. */
6227 if (link_info->shared)
6229 size = 4 * ARRAY_SIZE (shared_stub_entry);
6234 size = 4 * ARRAY_SIZE (stub_entry);
6237 stub_rtype = R_PPC_RELAX;
6238 if (tsec == htab->plt
6239 || tsec == htab->glink)
6241 stub_rtype = R_PPC_RELAX_PLT;
6242 if (r_type == R_PPC_PLTREL24)
6243 stub_rtype = R_PPC_RELAX_PLTREL24;
6246 /* Hijack the old relocation. Since we need two
6247 relocations for this use a "composite" reloc. */
6248 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6250 irel->r_offset = trampoff + insn_offset;
6251 if (r_type == R_PPC_PLTREL24
6252 && stub_rtype != R_PPC_RELAX_PLTREL24)
6255 /* Record the fixup so we don't do it again this section. */
6256 f = bfd_malloc (sizeof (*f));
6260 f->trampoff = trampoff;
6268 val = f->trampoff - roff;
6269 if (val >= max_branch_offset)
6272 /* Nop out the reloc, since we're finalizing things here. */
6273 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6276 /* Get the section contents. */
6277 if (contents == NULL)
6279 /* Get cached copy if it exists. */
6280 if (elf_section_data (isec)->this_hdr.contents != NULL)
6281 contents = elf_section_data (isec)->this_hdr.contents;
6284 /* Go get them off disk. */
6285 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6290 /* Fix up the existing branch to hit the trampoline. */
6291 hit_addr = contents + roff;
6295 case R_PPC_LOCAL24PC:
6296 case R_PPC_PLTREL24:
6297 t0 = bfd_get_32 (abfd, hit_addr);
6299 t0 |= val & 0x3fffffc;
6300 bfd_put_32 (abfd, t0, hit_addr);
6304 case R_PPC_REL14_BRTAKEN:
6305 case R_PPC_REL14_BRNTAKEN:
6306 t0 = bfd_get_32 (abfd, hit_addr);
6309 bfd_put_32 (abfd, t0, hit_addr);
6314 /* Write out the trampolines. */
6323 struct one_fixup *f = fixups;
6324 fixups = fixups->next;
6329 contents = bfd_realloc_or_free (contents, trampoff);
6330 if (contents == NULL)
6333 isec->size = (isec->size + 3) & (bfd_vma) -4;
6334 dest = contents + isec->size;
6335 /* Branch around the trampolines. */
6338 bfd_vma val = B + trampoff - isec->size;
6339 bfd_put_32 (abfd, val, dest);
6342 isec->size = trampoff;
6344 if (link_info->shared)
6346 stub = shared_stub_entry;
6347 size = ARRAY_SIZE (shared_stub_entry);
6352 size = ARRAY_SIZE (stub_entry);
6356 while (dest < contents + trampoff)
6358 bfd_put_32 (abfd, stub[i], dest);
6364 BFD_ASSERT (i == 0);
6368 && symtab_hdr->contents != (unsigned char *) isymbuf)
6370 if (! link_info->keep_memory)
6374 /* Cache the symbols for elf_link_input_bfd. */
6375 symtab_hdr->contents = (unsigned char *) isymbuf;
6379 if (contents != NULL
6380 && elf_section_data (isec)->this_hdr.contents != contents)
6382 if (!changes && !link_info->keep_memory)
6386 /* Cache the section contents for elf_link_input_bfd. */
6387 elf_section_data (isec)->this_hdr.contents = contents;
6393 /* Append sufficient NOP relocs so we can write out relocation
6394 information for the trampolines. */
6395 Elf_Internal_Shdr *rel_hdr;
6396 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6397 * sizeof (*new_relocs));
6402 memcpy (new_relocs, internal_relocs,
6403 isec->reloc_count * sizeof (*new_relocs));
6404 for (ix = changes; ix--;)
6406 irel = new_relocs + ix + isec->reloc_count;
6408 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6410 if (internal_relocs != elf_section_data (isec)->relocs)
6411 free (internal_relocs);
6412 elf_section_data (isec)->relocs = new_relocs;
6413 isec->reloc_count += changes;
6414 rel_hdr = _bfd_elf_single_rel_hdr (isec);
6415 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
6417 else if (elf_section_data (isec)->relocs != internal_relocs)
6418 free (internal_relocs);
6420 *again = changes != 0;
6421 if (!*again && link_info->relocatable)
6423 /* Convert the internal relax relocs to external form. */
6424 for (irel = internal_relocs; irel < irelend; irel++)
6425 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
6427 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6429 /* Rewrite the reloc and convert one of the trailing nop
6430 relocs to describe this relocation. */
6431 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6432 /* The relocs are at the bottom 2 bytes */
6433 irel[0].r_offset += 2;
6434 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6435 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6436 irel[1].r_offset += 4;
6437 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6445 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6447 if (contents != NULL
6448 && elf_section_data (isec)->this_hdr.contents != contents)
6450 if (internal_relocs != NULL
6451 && elf_section_data (isec)->relocs != internal_relocs)
6452 free (internal_relocs);
6456 /* What to do when ld finds relocations against symbols defined in
6457 discarded sections. */
6460 ppc_elf_action_discarded (asection *sec)
6462 if (strcmp (".fixup", sec->name) == 0)
6465 if (strcmp (".got2", sec->name) == 0)
6468 return _bfd_elf_default_action_discarded (sec);
6471 /* Fill in the address for a pointer generated in a linker section. */
6474 elf_finish_pointer_linker_section (bfd *input_bfd,
6475 elf_linker_section_t *lsect,
6476 struct elf_link_hash_entry *h,
6478 const Elf_Internal_Rela *rel)
6480 elf_linker_section_pointers_t *linker_section_ptr;
6482 BFD_ASSERT (lsect != NULL);
6486 /* Handle global symbol. */
6487 struct ppc_elf_link_hash_entry *eh;
6489 eh = (struct ppc_elf_link_hash_entry *) h;
6490 BFD_ASSERT (eh->elf.def_regular);
6491 linker_section_ptr = eh->linker_section_pointer;
6495 /* Handle local symbol. */
6496 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6498 BFD_ASSERT (is_ppc_elf (input_bfd));
6499 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6500 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6503 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6506 BFD_ASSERT (linker_section_ptr != NULL);
6508 /* Offset will always be a multiple of four, so use the bottom bit
6509 as a "written" flag. */
6510 if ((linker_section_ptr->offset & 1) == 0)
6512 bfd_put_32 (lsect->section->owner,
6513 relocation + linker_section_ptr->addend,
6514 lsect->section->contents + linker_section_ptr->offset);
6515 linker_section_ptr->offset += 1;
6518 relocation = (lsect->section->output_section->vma
6519 + lsect->section->output_offset
6520 + linker_section_ptr->offset - 1
6521 - SYM_VAL (lsect->sym));
6525 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6526 lsect->name, (long) relocation, (long) relocation);
6532 #define PPC_LO(v) ((v) & 0xffff)
6533 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6534 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6537 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
6538 struct bfd_link_info *info)
6540 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6541 bfd *output_bfd = info->output_bfd;
6544 plt = ((ent->plt.offset & ~1)
6545 + plt_sec->output_section->vma
6546 + plt_sec->output_offset);
6552 if (ent->addend >= 32768)
6554 + ent->sec->output_section->vma
6555 + ent->sec->output_offset);
6556 else if (htab->elf.hgot != NULL)
6557 got = SYM_VAL (htab->elf.hgot);
6561 if (plt + 0x8000 < 0x10000)
6563 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6565 bfd_put_32 (output_bfd, MTCTR_11, p);
6567 bfd_put_32 (output_bfd, BCTR, p);
6569 bfd_put_32 (output_bfd, NOP, p);
6574 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6576 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6578 bfd_put_32 (output_bfd, MTCTR_11, p);
6580 bfd_put_32 (output_bfd, BCTR, p);
6586 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6588 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6590 bfd_put_32 (output_bfd, MTCTR_11, p);
6592 bfd_put_32 (output_bfd, BCTR, p);
6597 /* Return true if symbol is defined statically. */
6600 is_static_defined (struct elf_link_hash_entry *h)
6602 return ((h->root.type == bfd_link_hash_defined
6603 || h->root.type == bfd_link_hash_defweak)
6604 && h->root.u.def.section != NULL
6605 && h->root.u.def.section->output_section != NULL);
6608 /* If INSN is an opcode that may be used with an @tls operand, return
6609 the transformed insn for TLS optimisation, otherwise return 0. If
6610 REG is non-zero only match an insn with RB or RA equal to REG. */
6613 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
6617 if ((insn & (0x3f << 26)) != 31 << 26)
6620 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
6621 rtra = insn & ((1 << 26) - (1 << 16));
6622 else if (((insn >> 16) & 0x1f) == reg)
6623 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
6627 if ((insn & (0x3ff << 1)) == 266 << 1)
6630 else if ((insn & (0x1f << 1)) == 23 << 1
6631 && ((insn & (0x1f << 6)) < 14 << 6
6632 || ((insn & (0x1f << 6)) >= 16 << 6
6633 && (insn & (0x1f << 6)) < 24 << 6)))
6634 /* load and store indexed -> dform. */
6635 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
6636 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
6637 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6638 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
6639 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
6641 insn = (58 << 26) | 2;
6648 /* If INSN is an opcode that may be used with an @tprel operand, return
6649 the transformed insn for an undefined weak symbol, ie. with the
6650 thread pointer REG operand removed. Otherwise return 0. */
6653 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
6655 if ((insn & (0x1f << 16)) == reg << 16
6656 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
6657 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
6658 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
6659 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
6660 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
6661 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
6662 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
6663 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
6664 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
6665 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
6666 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
6667 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
6668 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
6669 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
6670 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
6671 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
6673 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
6674 && ((insn & 3) == 0 || (insn & 3) == 3))))
6676 insn &= ~(0x1f << 16);
6678 else if ((insn & (0x1f << 21)) == reg << 21
6679 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
6680 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
6681 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
6683 insn &= ~(0x1f << 21);
6684 insn |= (insn & (0x1f << 16)) << 5;
6685 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
6686 insn -= 2 >> 26; /* convert to ori,oris */
6693 /* The RELOCATE_SECTION function is called by the ELF backend linker
6694 to handle the relocations for a section.
6696 The relocs are always passed as Rela structures; if the section
6697 actually uses Rel structures, the r_addend field will always be
6700 This function is responsible for adjust the section contents as
6701 necessary, and (if using Rela relocs and generating a
6702 relocatable output file) adjusting the reloc addend as
6705 This function does not have to worry about setting the reloc
6706 address or the reloc symbol index.
6708 LOCAL_SYMS is a pointer to the swapped in local symbols.
6710 LOCAL_SECTIONS is an array giving the section in the input file
6711 corresponding to the st_shndx field of each local symbol.
6713 The global hash table entry for the global symbols can be found
6714 via elf_sym_hashes (input_bfd).
6716 When generating relocatable output, this function must handle
6717 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6718 going to be the section symbol corresponding to the output
6719 section, which means that the addend must be adjusted
6723 ppc_elf_relocate_section (bfd *output_bfd,
6724 struct bfd_link_info *info,
6726 asection *input_section,
6728 Elf_Internal_Rela *relocs,
6729 Elf_Internal_Sym *local_syms,
6730 asection **local_sections)
6732 Elf_Internal_Shdr *symtab_hdr;
6733 struct elf_link_hash_entry **sym_hashes;
6734 struct ppc_elf_link_hash_table *htab;
6735 Elf_Internal_Rela *rel;
6736 Elf_Internal_Rela *relend;
6737 Elf_Internal_Rela outrel;
6738 asection *got2, *sreloc = NULL;
6739 bfd_vma *local_got_offsets;
6740 bfd_boolean ret = TRUE;
6741 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6742 bfd_boolean is_vxworks_tls;
6745 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6746 "%ld relocations%s",
6747 input_bfd, input_section,
6748 (long) input_section->reloc_count,
6749 (info->relocatable) ? " (relocatable)" : "");
6752 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6754 /* Initialize howto table if not already done. */
6755 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6756 ppc_elf_howto_init ();
6758 htab = ppc_elf_hash_table (info);
6759 local_got_offsets = elf_local_got_offsets (input_bfd);
6760 symtab_hdr = &elf_symtab_hdr (input_bfd);
6761 sym_hashes = elf_sym_hashes (input_bfd);
6762 /* We have to handle relocations in vxworks .tls_vars sections
6763 specially, because the dynamic loader is 'weird'. */
6764 is_vxworks_tls = (htab->is_vxworks && info->shared
6765 && !strcmp (input_section->output_section->name,
6768 relend = relocs + input_section->reloc_count;
6769 for (; rel < relend; rel++)
6771 enum elf_ppc_reloc_type r_type;
6773 bfd_reloc_status_type r;
6774 Elf_Internal_Sym *sym;
6776 struct elf_link_hash_entry *h;
6777 const char *sym_name;
6778 reloc_howto_type *howto;
6779 unsigned long r_symndx;
6781 bfd_vma branch_bit, from;
6782 bfd_boolean unresolved_reloc;
6784 unsigned int tls_type, tls_mask, tls_gd;
6785 struct plt_entry **ifunc;
6787 r_type = ELF32_R_TYPE (rel->r_info);
6791 unresolved_reloc = FALSE;
6793 r_symndx = ELF32_R_SYM (rel->r_info);
6795 if (r_symndx < symtab_hdr->sh_info)
6797 sym = local_syms + r_symndx;
6798 sec = local_sections[r_symndx];
6799 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6801 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6805 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6806 r_symndx, symtab_hdr, sym_hashes,
6808 unresolved_reloc, warned);
6810 sym_name = h->root.root.string;
6813 if (sec != NULL && elf_discarded_section (sec))
6815 /* For relocs against symbols from removed linkonce sections,
6816 or sections discarded by a linker script, we just want the
6817 section contents zeroed. Avoid any special processing. */
6819 if (r_type < R_PPC_max)
6820 howto = ppc_elf_howto_table[r_type];
6821 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6822 rel, relend, howto, contents);
6825 if (info->relocatable)
6828 && r_type == R_PPC_PLTREL24
6829 && rel->r_addend >= 32768)
6831 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6832 addend specifies the GOT pointer offset within .got2. */
6833 rel->r_addend += got2->output_offset;
6838 /* TLS optimizations. Replace instruction sequences and relocs
6839 based on information we collected in tls_optimize. We edit
6840 RELOCS so that --emit-relocs will output something sensible
6841 for the final instruction stream. */
6845 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6846 else if (local_got_offsets != NULL)
6848 struct plt_entry **local_plt;
6851 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6852 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
6853 tls_mask = lgot_masks[r_symndx];
6856 /* Ensure reloc mapping code below stays sane. */
6857 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6858 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6859 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6860 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6861 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6862 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6863 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6864 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6871 case R_PPC_GOT_TPREL16:
6872 case R_PPC_GOT_TPREL16_LO:
6873 if ((tls_mask & TLS_TLS) != 0
6874 && (tls_mask & TLS_TPREL) == 0)
6878 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6880 insn |= 0x3c020000; /* addis 0,2,0 */
6881 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6882 r_type = R_PPC_TPREL16_HA;
6883 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6888 if ((tls_mask & TLS_TLS) != 0
6889 && (tls_mask & TLS_TPREL) == 0)
6893 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6894 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
6897 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6898 r_type = R_PPC_TPREL16_LO;
6899 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6901 /* Was PPC_TLS which sits on insn boundary, now
6902 PPC_TPREL16_LO which is at low-order half-word. */
6903 rel->r_offset += d_offset;
6907 case R_PPC_GOT_TLSGD16_HI:
6908 case R_PPC_GOT_TLSGD16_HA:
6909 tls_gd = TLS_TPRELGD;
6910 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6914 case R_PPC_GOT_TLSLD16_HI:
6915 case R_PPC_GOT_TLSLD16_HA:
6916 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6919 if ((tls_mask & tls_gd) != 0)
6920 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6921 + R_PPC_GOT_TPREL16);
6924 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6925 rel->r_offset -= d_offset;
6926 r_type = R_PPC_NONE;
6928 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6932 case R_PPC_GOT_TLSGD16:
6933 case R_PPC_GOT_TLSGD16_LO:
6934 tls_gd = TLS_TPRELGD;
6935 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6939 case R_PPC_GOT_TLSLD16:
6940 case R_PPC_GOT_TLSLD16_LO:
6941 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6943 unsigned int insn1, insn2;
6947 offset = (bfd_vma) -1;
6948 /* If not using the newer R_PPC_TLSGD/LD to mark
6949 __tls_get_addr calls, we must trust that the call
6950 stays with its arg setup insns, ie. that the next
6951 reloc is the __tls_get_addr call associated with
6952 the current reloc. Edit both insns. */
6953 if (input_section->has_tls_get_addr_call
6955 && branch_reloc_hash_match (input_bfd, rel + 1,
6956 htab->tls_get_addr))
6957 offset = rel[1].r_offset;
6958 if ((tls_mask & tls_gd) != 0)
6961 insn1 = bfd_get_32 (output_bfd,
6962 contents + rel->r_offset - d_offset);
6963 insn1 &= (1 << 26) - 1;
6964 insn1 |= 32 << 26; /* lwz */
6965 if (offset != (bfd_vma) -1)
6967 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
6968 insn2 = 0x7c631214; /* add 3,3,2 */
6969 bfd_put_32 (output_bfd, insn2, contents + offset);
6971 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6972 + R_PPC_GOT_TPREL16);
6973 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6978 insn1 = 0x3c620000; /* addis 3,2,0 */
6981 /* Was an LD reloc. */
6983 r_symndx < symtab_hdr->sh_info;
6985 if (local_sections[r_symndx] == sec)
6987 if (r_symndx >= symtab_hdr->sh_info)
6988 r_symndx = STN_UNDEF;
6989 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6990 if (r_symndx != STN_UNDEF)
6991 rel->r_addend -= (local_syms[r_symndx].st_value
6992 + sec->output_offset
6993 + sec->output_section->vma);
6995 r_type = R_PPC_TPREL16_HA;
6996 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6997 if (offset != (bfd_vma) -1)
6999 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7000 rel[1].r_offset = offset + d_offset;
7001 rel[1].r_addend = rel->r_addend;
7002 insn2 = 0x38630000; /* addi 3,3,0 */
7003 bfd_put_32 (output_bfd, insn2, contents + offset);
7006 bfd_put_32 (output_bfd, insn1,
7007 contents + rel->r_offset - d_offset);
7010 /* We changed the symbol on an LD reloc. Start over
7011 in order to get h, sym, sec etc. right. */
7019 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7022 bfd_vma offset = rel->r_offset;
7024 if ((tls_mask & TLS_TPRELGD) != 0)
7027 r_type = R_PPC_NONE;
7028 insn2 = 0x7c631214; /* add 3,3,2 */
7033 r_type = R_PPC_TPREL16_LO;
7034 rel->r_offset += d_offset;
7035 insn2 = 0x38630000; /* addi 3,3,0 */
7037 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7038 bfd_put_32 (output_bfd, insn2, contents + offset);
7039 /* Zap the reloc on the _tls_get_addr call too. */
7040 BFD_ASSERT (offset == rel[1].r_offset);
7041 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7046 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7051 r_symndx < symtab_hdr->sh_info;
7053 if (local_sections[r_symndx] == sec)
7055 if (r_symndx >= symtab_hdr->sh_info)
7056 r_symndx = STN_UNDEF;
7057 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7058 if (r_symndx != STN_UNDEF)
7059 rel->r_addend -= (local_syms[r_symndx].st_value
7060 + sec->output_offset
7061 + sec->output_section->vma);
7063 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7064 rel->r_offset += d_offset;
7065 insn2 = 0x38630000; /* addi 3,3,0 */
7066 bfd_put_32 (output_bfd, insn2,
7067 contents + rel->r_offset - d_offset);
7068 /* Zap the reloc on the _tls_get_addr call too. */
7069 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7070 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7077 /* Handle other relocations that tweak non-addend part of insn. */
7084 /* Branch taken prediction relocations. */
7085 case R_PPC_ADDR14_BRTAKEN:
7086 case R_PPC_REL14_BRTAKEN:
7087 branch_bit = BRANCH_PREDICT_BIT;
7090 /* Branch not taken prediction relocations. */
7091 case R_PPC_ADDR14_BRNTAKEN:
7092 case R_PPC_REL14_BRNTAKEN:
7096 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7097 insn &= ~BRANCH_PREDICT_BIT;
7100 from = (rel->r_offset
7101 + input_section->output_offset
7102 + input_section->output_section->vma);
7104 /* Invert 'y' bit if not the default. */
7105 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7106 insn ^= BRANCH_PREDICT_BIT;
7108 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7114 if (!htab->is_vxworks)
7116 struct plt_entry *ent;
7120 if (h->type == STT_GNU_IFUNC)
7121 ifunc = &h->plt.plist;
7123 else if (local_got_offsets != NULL
7124 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7126 struct plt_entry **local_plt;
7128 local_plt = (struct plt_entry **) (local_got_offsets
7129 + symtab_hdr->sh_info);
7130 ifunc = local_plt + r_symndx;
7136 || is_branch_reloc (r_type)))
7139 if (r_type == R_PPC_PLTREL24 && info->shared)
7140 addend = rel->r_addend;
7141 ent = find_plt_ent (ifunc, got2, addend);
7145 if (h == NULL && (ent->plt.offset & 1) == 0)
7147 Elf_Internal_Rela rela;
7150 rela.r_offset = (htab->iplt->output_section->vma
7151 + htab->iplt->output_offset
7153 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7154 rela.r_addend = relocation;
7155 loc = htab->reliplt->contents;
7156 loc += (htab->reliplt->reloc_count++
7157 * sizeof (Elf32_External_Rela));
7158 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7160 ent->plt.offset |= 1;
7162 if (h == NULL && (ent->glink_offset & 1) == 0)
7164 unsigned char *p = ((unsigned char *) htab->glink->contents
7165 + ent->glink_offset);
7166 write_glink_stub (ent, htab->iplt, p, info);
7167 ent->glink_offset |= 1;
7170 unresolved_reloc = FALSE;
7171 if (htab->plt_type == PLT_NEW
7172 || !htab->elf.dynamic_sections_created
7174 relocation = (htab->glink->output_section->vma
7175 + htab->glink->output_offset
7176 + (ent->glink_offset & ~1));
7178 relocation = (htab->plt->output_section->vma
7179 + htab->plt->output_offset
7184 addend = rel->r_addend;
7187 if (r_type < R_PPC_max)
7188 howto = ppc_elf_howto_table[r_type];
7192 (*_bfd_error_handler)
7193 (_("%B: unknown relocation type %d for symbol %s"),
7194 input_bfd, (int) r_type, sym_name);
7196 bfd_set_error (bfd_error_bad_value);
7204 case R_PPC_EMB_MRKREF:
7205 case R_PPC_GNU_VTINHERIT:
7206 case R_PPC_GNU_VTENTRY:
7209 /* GOT16 relocations. Like an ADDR16 using the symbol's
7210 address in the GOT as relocation value instead of the
7211 symbol's value itself. Also, create a GOT entry for the
7212 symbol and put the symbol value there. */
7213 case R_PPC_GOT_TLSGD16:
7214 case R_PPC_GOT_TLSGD16_LO:
7215 case R_PPC_GOT_TLSGD16_HI:
7216 case R_PPC_GOT_TLSGD16_HA:
7217 tls_type = TLS_TLS | TLS_GD;
7220 case R_PPC_GOT_TLSLD16:
7221 case R_PPC_GOT_TLSLD16_LO:
7222 case R_PPC_GOT_TLSLD16_HI:
7223 case R_PPC_GOT_TLSLD16_HA:
7224 tls_type = TLS_TLS | TLS_LD;
7227 case R_PPC_GOT_TPREL16:
7228 case R_PPC_GOT_TPREL16_LO:
7229 case R_PPC_GOT_TPREL16_HI:
7230 case R_PPC_GOT_TPREL16_HA:
7231 tls_type = TLS_TLS | TLS_TPREL;
7234 case R_PPC_GOT_DTPREL16:
7235 case R_PPC_GOT_DTPREL16_LO:
7236 case R_PPC_GOT_DTPREL16_HI:
7237 case R_PPC_GOT_DTPREL16_HA:
7238 tls_type = TLS_TLS | TLS_DTPREL;
7242 case R_PPC_GOT16_LO:
7243 case R_PPC_GOT16_HI:
7244 case R_PPC_GOT16_HA:
7248 /* Relocation is to the entry for this symbol in the global
7254 if (htab->got == NULL)
7258 if (tls_type == (TLS_TLS | TLS_LD)
7260 || !h->def_dynamic))
7261 offp = &htab->tlsld_got.offset;
7265 dyn = htab->elf.dynamic_sections_created;
7266 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7268 && SYMBOL_REFERENCES_LOCAL (info, h)))
7269 /* This is actually a static link, or it is a
7270 -Bsymbolic link and the symbol is defined
7271 locally, or the symbol was forced to be local
7272 because of a version file. */
7277 unresolved_reloc = FALSE;
7279 offp = &h->got.offset;
7283 if (local_got_offsets == NULL)
7285 offp = &local_got_offsets[r_symndx];
7288 /* The offset must always be a multiple of 4. We use the
7289 least significant bit to record whether we have already
7290 processed this entry. */
7296 unsigned int tls_m = (tls_mask
7297 & (TLS_LD | TLS_GD | TLS_DTPREL
7298 | TLS_TPREL | TLS_TPRELGD));
7300 if (offp == &htab->tlsld_got.offset)
7306 /* We might have multiple got entries for this sym.
7307 Initialize them all. */
7312 if ((tls_m & TLS_LD) != 0)
7314 tls_ty = TLS_TLS | TLS_LD;
7317 else if ((tls_m & TLS_GD) != 0)
7319 tls_ty = TLS_TLS | TLS_GD;
7322 else if ((tls_m & TLS_DTPREL) != 0)
7324 tls_ty = TLS_TLS | TLS_DTPREL;
7325 tls_m &= ~TLS_DTPREL;
7327 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7329 tls_ty = TLS_TLS | TLS_TPREL;
7333 /* Generate relocs for the dynamic linker. */
7334 if ((info->shared || indx != 0)
7335 && (offp == &htab->tlsld_got.offset
7337 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7338 || h->root.type != bfd_link_hash_undefweak))
7340 asection *rsec = htab->relgot;
7343 outrel.r_offset = (htab->got->output_section->vma
7344 + htab->got->output_offset
7346 outrel.r_addend = 0;
7347 if (tls_ty & (TLS_LD | TLS_GD))
7349 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7350 if (tls_ty == (TLS_TLS | TLS_GD))
7352 loc = rsec->contents;
7353 loc += (rsec->reloc_count++
7354 * sizeof (Elf32_External_Rela));
7355 bfd_elf32_swap_reloca_out (output_bfd,
7357 outrel.r_offset += 4;
7359 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7362 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7363 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7364 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7365 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7367 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7368 else if (ifunc != NULL)
7369 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7371 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7372 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7374 outrel.r_addend += relocation;
7375 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7376 outrel.r_addend -= htab->elf.tls_sec->vma;
7378 loc = rsec->contents;
7379 loc += (rsec->reloc_count++
7380 * sizeof (Elf32_External_Rela));
7381 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7384 /* Init the .got section contents if we're not
7385 emitting a reloc. */
7388 bfd_vma value = relocation;
7390 if (tls_ty == (TLS_TLS | TLS_LD))
7392 else if (tls_ty != 0)
7394 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7395 if (tls_ty == (TLS_TLS | TLS_TPREL))
7396 value += DTP_OFFSET - TP_OFFSET;
7398 if (tls_ty == (TLS_TLS | TLS_GD))
7400 bfd_put_32 (output_bfd, value,
7401 htab->got->contents + off + 4);
7405 bfd_put_32 (output_bfd, value,
7406 htab->got->contents + off);
7410 if (tls_ty & (TLS_LD | TLS_GD))
7419 if (off >= (bfd_vma) -2)
7422 if ((tls_type & TLS_TLS) != 0)
7424 if (tls_type != (TLS_TLS | TLS_LD))
7426 if ((tls_mask & TLS_LD) != 0
7428 || !h->def_dynamic))
7430 if (tls_type != (TLS_TLS | TLS_GD))
7432 if ((tls_mask & TLS_GD) != 0)
7434 if (tls_type != (TLS_TLS | TLS_DTPREL))
7436 if ((tls_mask & TLS_DTPREL) != 0)
7443 relocation = (htab->got->output_section->vma
7444 + htab->got->output_offset
7446 - SYM_VAL (htab->elf.hgot));
7448 /* Addends on got relocations don't make much sense.
7449 x+off@got is actually x@got+off, and since the got is
7450 generated by a hash table traversal, the value in the
7451 got at entry m+n bears little relation to the entry m. */
7453 (*_bfd_error_handler)
7454 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
7457 (long) rel->r_offset,
7463 /* Relocations that need no special processing. */
7464 case R_PPC_LOCAL24PC:
7465 /* It makes no sense to point a local relocation
7466 at a symbol not in this object. */
7467 if (unresolved_reloc)
7469 if (! (*info->callbacks->undefined_symbol) (info,
7470 h->root.root.string,
7480 case R_PPC_DTPREL16:
7481 case R_PPC_DTPREL16_LO:
7482 case R_PPC_DTPREL16_HI:
7483 case R_PPC_DTPREL16_HA:
7484 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7487 /* Relocations that may need to be propagated if this is a shared
7490 case R_PPC_TPREL16_LO:
7491 case R_PPC_TPREL16_HI:
7492 case R_PPC_TPREL16_HA:
7494 && h->root.type == bfd_link_hash_undefweak
7495 && h->dynindx == -1)
7497 /* Make this relocation against an undefined weak symbol
7498 resolve to zero. This is really just a tweak, since
7499 code using weak externs ought to check that they are
7500 defined before using them. */
7501 bfd_byte *p = contents + rel->r_offset - d_offset;
7502 unsigned int insn = bfd_get_32 (output_bfd, p);
7503 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
7505 bfd_put_32 (output_bfd, insn, p);
7508 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7509 /* The TPREL16 relocs shouldn't really be used in shared
7510 libs as they will result in DT_TEXTREL being set, but
7511 support them anyway. */
7515 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7518 case R_PPC_DTPREL32:
7519 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7522 case R_PPC_DTPMOD32:
7528 case R_PPC_REL16_LO:
7529 case R_PPC_REL16_HI:
7530 case R_PPC_REL16_HA:
7534 if (h == NULL || h == htab->elf.hgot)
7540 case R_PPC_ADDR16_LO:
7541 case R_PPC_ADDR16_HI:
7542 case R_PPC_ADDR16_HA:
7549 case R_PPC_REL14_BRTAKEN:
7550 case R_PPC_REL14_BRNTAKEN:
7551 /* If these relocations are not to a named symbol, they can be
7552 handled right here, no need to bother the dynamic linker. */
7553 if (SYMBOL_CALLS_LOCAL (info, h)
7554 || h == htab->elf.hgot)
7560 case R_PPC_ADDR14_BRTAKEN:
7561 case R_PPC_ADDR14_BRNTAKEN:
7562 if (h != NULL && !info->shared)
7567 if ((input_section->flags & SEC_ALLOC) == 0
7573 && ((h->root.type == bfd_link_hash_undefined
7574 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7575 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7576 || (h->root.type == bfd_link_hash_undefweak
7577 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
7578 && (must_be_dyn_reloc (info, r_type)
7579 || !SYMBOL_CALLS_LOCAL (info, h)))
7580 || (ELIMINATE_COPY_RELOCS
7585 && !h->def_regular))
7590 fprintf (stderr, "ppc_elf_relocate_section needs to "
7591 "create relocation for %s\n",
7592 (h && h->root.root.string
7593 ? h->root.root.string : "<unknown>"));
7596 /* When generating a shared object, these relocations
7597 are copied into the output file to be resolved at run
7601 sreloc = elf_section_data (input_section)->sreloc;
7602 if (!htab->elf.dynamic_sections_created)
7603 sreloc = htab->reliplt;
7609 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
7612 if (outrel.r_offset == (bfd_vma) -1
7613 || outrel.r_offset == (bfd_vma) -2)
7614 skip = (int) outrel.r_offset;
7615 outrel.r_offset += (input_section->output_section->vma
7616 + input_section->output_offset);
7619 memset (&outrel, 0, sizeof outrel);
7621 && (h->root.type == bfd_link_hash_undefined
7622 || h->root.type == bfd_link_hash_undefweak))
7623 || !SYMBOL_REFERENCES_LOCAL (info, h))
7625 unresolved_reloc = FALSE;
7626 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7627 outrel.r_addend = rel->r_addend;
7631 outrel.r_addend = relocation + rel->r_addend;
7633 if (r_type != R_PPC_ADDR32)
7639 /* If we get here when building a static
7640 executable, then the libc startup function
7641 responsible for applying indirect function
7642 relocations is going to complain about
7644 If we get here when building a dynamic
7645 executable, it will be because we have
7646 a text relocation. The dynamic loader
7647 will set the text segment writable and
7648 non-executable to apply text relocations.
7649 So we'll segfault when trying to run the
7650 indirection function to resolve the reloc. */
7651 (*_bfd_error_handler)
7652 (_("%B(%A+0x%lx): relocation %s for indirect "
7653 "function %s unsupported"),
7656 (long) rel->r_offset,
7661 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
7663 else if (sec == NULL || sec->owner == NULL)
7665 bfd_set_error (bfd_error_bad_value);
7672 /* We are turning this relocation into one
7673 against a section symbol. It would be
7674 proper to subtract the symbol's value,
7675 osec->vma, from the emitted reloc addend,
7676 but ld.so expects buggy relocs.
7677 FIXME: Why not always use a zero index? */
7678 osec = sec->output_section;
7679 indx = elf_section_data (osec)->dynindx;
7682 osec = htab->elf.text_index_section;
7683 indx = elf_section_data (osec)->dynindx;
7685 BFD_ASSERT (indx != 0);
7688 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7689 indx, osec->name, osec->flags,
7690 h->root.root.string);
7694 outrel.r_info = ELF32_R_INFO (indx, r_type);
7696 else if (ifunc != NULL)
7697 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7699 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7702 loc = sreloc->contents;
7703 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7704 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7709 /* This reloc will be computed at runtime. We clear the memory
7710 so that it contains predictable value. */
7712 && ((input_section->flags & SEC_ALLOC) != 0
7713 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7715 relocation = howto->pc_relative ? outrel.r_offset : 0;
7722 case R_PPC_RELAX_PLT:
7723 case R_PPC_RELAX_PLTREL24:
7726 struct plt_entry *ent;
7727 bfd_vma got2_addend = 0;
7729 if (r_type == R_PPC_RELAX_PLTREL24)
7732 got2_addend = addend;
7735 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
7736 if (htab->plt_type == PLT_NEW)
7737 relocation = (htab->glink->output_section->vma
7738 + htab->glink->output_offset
7739 + ent->glink_offset);
7741 relocation = (htab->plt->output_section->vma
7742 + htab->plt->output_offset
7749 relocation -= (input_section->output_section->vma
7750 + input_section->output_offset
7751 + rel->r_offset - 4);
7757 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7758 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7760 /* We're clearing the bits for R_PPC_ADDR16_HA
7761 and R_PPC_ADDR16_LO here. */
7765 /* t0 is HA, t1 is LO */
7766 relocation += addend;
7767 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7768 t1 |= relocation & 0xffff;
7770 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7771 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
7773 /* Rewrite the reloc and convert one of the trailing nop
7774 relocs to describe this relocation. */
7775 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7776 /* The relocs are at the bottom 2 bytes */
7777 rel[0].r_offset += 2;
7778 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7779 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7780 rel[1].r_offset += 4;
7781 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7786 /* Indirect .sdata relocation. */
7787 case R_PPC_EMB_SDAI16:
7788 BFD_ASSERT (htab->sdata[0].section != NULL);
7789 if (!is_static_defined (htab->sdata[0].sym))
7791 unresolved_reloc = TRUE;
7795 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7796 h, relocation, rel);
7800 /* Indirect .sdata2 relocation. */
7801 case R_PPC_EMB_SDA2I16:
7802 BFD_ASSERT (htab->sdata[1].section != NULL);
7803 if (!is_static_defined (htab->sdata[1].sym))
7805 unresolved_reloc = TRUE;
7809 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7810 h, relocation, rel);
7814 /* Handle the TOC16 reloc. We want to use the offset within the .got
7815 section, not the actual VMA. This is appropriate when generating
7816 an embedded ELF object, for which the .got section acts like the
7817 AIX .toc section. */
7818 case R_PPC_TOC16: /* phony GOT16 relocations */
7819 if (sec == NULL || sec->output_section == NULL)
7821 unresolved_reloc = TRUE;
7824 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7825 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7827 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7830 case R_PPC_PLTREL24:
7831 if (h == NULL || ifunc != NULL)
7833 /* Relocation is to the entry for this symbol in the
7834 procedure linkage table. */
7836 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7837 info->shared ? addend : 0);
7840 || htab->plt == NULL)
7842 /* We didn't make a PLT entry for this symbol. This
7843 happens when statically linking PIC code, or when
7844 using -Bsymbolic. */
7848 unresolved_reloc = FALSE;
7849 if (htab->plt_type == PLT_NEW)
7850 relocation = (htab->glink->output_section->vma
7851 + htab->glink->output_offset
7852 + ent->glink_offset);
7854 relocation = (htab->plt->output_section->vma
7855 + htab->plt->output_offset
7860 /* Relocate against _SDA_BASE_. */
7861 case R_PPC_SDAREL16:
7864 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
7867 || sec->output_section == NULL
7868 || !is_static_defined (sda))
7870 unresolved_reloc = TRUE;
7873 addend -= SYM_VAL (sda);
7875 name = bfd_get_section_name (abfd, sec->output_section);
7876 if (! ((CONST_STRNEQ (name, ".sdata")
7877 && (name[6] == 0 || name[6] == '.'))
7878 || (CONST_STRNEQ (name, ".sbss")
7879 && (name[5] == 0 || name[5] == '.'))))
7881 (*_bfd_error_handler)
7882 (_("%B: the target (%s) of a %s relocation is "
7883 "in the wrong output section (%s)"),
7892 /* Relocate against _SDA2_BASE_. */
7893 case R_PPC_EMB_SDA2REL:
7896 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
7899 || sec->output_section == NULL
7900 || !is_static_defined (sda))
7902 unresolved_reloc = TRUE;
7905 addend -= SYM_VAL (sda);
7907 name = bfd_get_section_name (abfd, sec->output_section);
7908 if (! (CONST_STRNEQ (name, ".sdata2")
7909 || CONST_STRNEQ (name, ".sbss2")))
7911 (*_bfd_error_handler)
7912 (_("%B: the target (%s) of a %s relocation is "
7913 "in the wrong output section (%s)"),
7922 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7923 case R_PPC_EMB_SDA21:
7924 case R_PPC_EMB_RELSDA:
7928 struct elf_link_hash_entry *sda = NULL;
7930 if (sec == NULL || sec->output_section == NULL)
7932 unresolved_reloc = TRUE;
7936 name = bfd_get_section_name (abfd, sec->output_section);
7937 if (((CONST_STRNEQ (name, ".sdata")
7938 && (name[6] == 0 || name[6] == '.'))
7939 || (CONST_STRNEQ (name, ".sbss")
7940 && (name[5] == 0 || name[5] == '.'))))
7943 sda = htab->sdata[0].sym;
7945 else if (CONST_STRNEQ (name, ".sdata2")
7946 || CONST_STRNEQ (name, ".sbss2"))
7949 sda = htab->sdata[1].sym;
7951 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7952 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7958 (*_bfd_error_handler)
7959 (_("%B: the target (%s) of a %s relocation is "
7960 "in the wrong output section (%s)"),
7966 bfd_set_error (bfd_error_bad_value);
7973 if (!is_static_defined (sda))
7975 unresolved_reloc = TRUE;
7978 addend -= SYM_VAL (sda);
7981 if (r_type == R_PPC_EMB_SDA21)
7983 bfd_vma insn; /* Fill in register field. */
7985 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7986 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7987 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7992 /* Relocate against the beginning of the section. */
7994 case R_PPC_SECTOFF_LO:
7995 case R_PPC_SECTOFF_HI:
7996 case R_PPC_SECTOFF_HA:
7997 if (sec == NULL || sec->output_section == NULL)
7999 unresolved_reloc = TRUE;
8002 addend -= sec->output_section->vma;
8005 /* Negative relocations. */
8006 case R_PPC_EMB_NADDR32:
8007 case R_PPC_EMB_NADDR16:
8008 case R_PPC_EMB_NADDR16_LO:
8009 case R_PPC_EMB_NADDR16_HI:
8010 case R_PPC_EMB_NADDR16_HA:
8011 addend -= 2 * relocation;
8015 case R_PPC_GLOB_DAT:
8016 case R_PPC_JMP_SLOT:
8017 case R_PPC_RELATIVE:
8018 case R_PPC_IRELATIVE:
8020 case R_PPC_PLTREL32:
8021 case R_PPC_PLT16_LO:
8022 case R_PPC_PLT16_HI:
8023 case R_PPC_PLT16_HA:
8025 case R_PPC_EMB_RELSEC16:
8026 case R_PPC_EMB_RELST_LO:
8027 case R_PPC_EMB_RELST_HI:
8028 case R_PPC_EMB_RELST_HA:
8029 case R_PPC_EMB_BIT_FLD:
8030 (*_bfd_error_handler)
8031 (_("%B: relocation %s is not yet supported for symbol %s."),
8036 bfd_set_error (bfd_error_invalid_operation);
8041 /* Do any further special processing. */
8047 case R_PPC_ADDR16_HA:
8048 case R_PPC_REL16_HA:
8049 case R_PPC_SECTOFF_HA:
8050 case R_PPC_TPREL16_HA:
8051 case R_PPC_DTPREL16_HA:
8052 case R_PPC_EMB_NADDR16_HA:
8053 case R_PPC_EMB_RELST_HA:
8054 /* It's just possible that this symbol is a weak symbol
8055 that's not actually defined anywhere. In that case,
8056 'sec' would be NULL, and we should leave the symbol
8057 alone (it will be set to zero elsewhere in the link). */
8062 case R_PPC_PLT16_HA:
8063 case R_PPC_GOT16_HA:
8064 case R_PPC_GOT_TLSGD16_HA:
8065 case R_PPC_GOT_TLSLD16_HA:
8066 case R_PPC_GOT_TPREL16_HA:
8067 case R_PPC_GOT_DTPREL16_HA:
8068 /* Add 0x10000 if sign bit in 0:15 is set.
8069 Bits 0:15 are not used. */
8075 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8076 "offset = %ld, addend = %ld\n",
8081 (long) rel->r_offset,
8085 if (unresolved_reloc
8086 && !((input_section->flags & SEC_DEBUGGING) != 0
8089 (*_bfd_error_handler)
8090 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
8093 (long) rel->r_offset,
8099 r = _bfd_final_link_relocate (howto,
8107 if (r != bfd_reloc_ok)
8109 if (r == bfd_reloc_overflow)
8114 && h->root.type == bfd_link_hash_undefweak
8115 && howto->pc_relative)
8117 /* Assume this is a call protected by other code that
8118 detect the symbol is undefined. If this is the case,
8119 we can safely ignore the overflow. If not, the
8120 program is hosed anyway, and a little warning isn't
8126 if (! (*info->callbacks->reloc_overflow) (info,
8127 (h ? &h->root : NULL),
8138 (*_bfd_error_handler)
8139 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
8140 input_bfd, input_section,
8141 (long) rel->r_offset, howto->name, sym_name, (int) r);
8148 fprintf (stderr, "\n");
8154 /* Finish up dynamic symbol handling. We set the contents of various
8155 dynamic sections here. */
8158 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
8159 struct bfd_link_info *info,
8160 struct elf_link_hash_entry *h,
8161 Elf_Internal_Sym *sym)
8163 struct ppc_elf_link_hash_table *htab;
8164 struct plt_entry *ent;
8165 bfd_boolean doneone;
8168 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
8169 h->root.root.string);
8172 htab = ppc_elf_hash_table (info);
8173 BFD_ASSERT (htab->elf.dynobj != NULL);
8176 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8177 if (ent->plt.offset != (bfd_vma) -1)
8181 Elf_Internal_Rela rela;
8183 bfd_vma reloc_index;
8185 if (htab->plt_type == PLT_NEW
8186 || !htab->elf.dynamic_sections_created
8187 || h->dynindx == -1)
8188 reloc_index = ent->plt.offset / 4;
8191 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
8192 / htab->plt_slot_size);
8193 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
8194 && htab->plt_type == PLT_OLD)
8195 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
8198 /* This symbol has an entry in the procedure linkage table.
8200 if (htab->plt_type == PLT_VXWORKS
8201 && htab->elf.dynamic_sections_created
8202 && h->dynindx != -1)
8205 const bfd_vma *plt_entry;
8207 /* The first three entries in .got.plt are reserved. */
8208 got_offset = (reloc_index + 3) * 4;
8210 /* Use the right PLT. */
8211 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8212 : ppc_elf_vxworks_plt_entry;
8214 /* Fill in the .plt on VxWorks. */
8217 bfd_put_32 (output_bfd,
8218 plt_entry[0] | PPC_HA (got_offset),
8219 htab->plt->contents + ent->plt.offset + 0);
8220 bfd_put_32 (output_bfd,
8221 plt_entry[1] | PPC_LO (got_offset),
8222 htab->plt->contents + ent->plt.offset + 4);
8226 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
8228 bfd_put_32 (output_bfd,
8229 plt_entry[0] | PPC_HA (got_loc),
8230 htab->plt->contents + ent->plt.offset + 0);
8231 bfd_put_32 (output_bfd,
8232 plt_entry[1] | PPC_LO (got_loc),
8233 htab->plt->contents + ent->plt.offset + 4);
8236 bfd_put_32 (output_bfd, plt_entry[2],
8237 htab->plt->contents + ent->plt.offset + 8);
8238 bfd_put_32 (output_bfd, plt_entry[3],
8239 htab->plt->contents + ent->plt.offset + 12);
8241 /* This instruction is an immediate load. The value loaded is
8242 the byte offset of the R_PPC_JMP_SLOT relocation from the
8243 start of the .rela.plt section. The value is stored in the
8244 low-order 16 bits of the load instruction. */
8245 /* NOTE: It appears that this is now an index rather than a
8246 prescaled offset. */
8247 bfd_put_32 (output_bfd,
8248 plt_entry[4] | reloc_index,
8249 htab->plt->contents + ent->plt.offset + 16);
8250 /* This instruction is a PC-relative branch whose target is
8251 the start of the PLT section. The address of this branch
8252 instruction is 20 bytes beyond the start of this PLT entry.
8253 The address is encoded in bits 6-29, inclusive. The value
8254 stored is right-shifted by two bits, permitting a 26-bit
8256 bfd_put_32 (output_bfd,
8258 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8259 htab->plt->contents + ent->plt.offset + 20);
8260 bfd_put_32 (output_bfd, plt_entry[6],
8261 htab->plt->contents + ent->plt.offset + 24);
8262 bfd_put_32 (output_bfd, plt_entry[7],
8263 htab->plt->contents + ent->plt.offset + 28);
8265 /* Fill in the GOT entry corresponding to this PLT slot with
8266 the address immediately after the the "bctr" instruction
8267 in this PLT entry. */
8268 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8269 + htab->plt->output_offset
8270 + ent->plt.offset + 16),
8271 htab->sgotplt->contents + got_offset);
8275 /* Fill in a couple of entries in .rela.plt.unloaded. */
8276 loc = htab->srelplt2->contents
8277 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8278 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8279 * sizeof (Elf32_External_Rela));
8281 /* Provide the @ha relocation for the first instruction. */
8282 rela.r_offset = (htab->plt->output_section->vma
8283 + htab->plt->output_offset
8284 + ent->plt.offset + 2);
8285 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8287 rela.r_addend = got_offset;
8288 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8289 loc += sizeof (Elf32_External_Rela);
8291 /* Provide the @l relocation for the second instruction. */
8292 rela.r_offset = (htab->plt->output_section->vma
8293 + htab->plt->output_offset
8294 + ent->plt.offset + 6);
8295 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8297 rela.r_addend = got_offset;
8298 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8299 loc += sizeof (Elf32_External_Rela);
8301 /* Provide a relocation for the GOT entry corresponding to this
8302 PLT slot. Point it at the middle of the .plt entry. */
8303 rela.r_offset = (htab->sgotplt->output_section->vma
8304 + htab->sgotplt->output_offset
8306 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
8308 rela.r_addend = ent->plt.offset + 16;
8309 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8312 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8313 In particular, the offset for the relocation is not the
8314 address of the PLT entry for this function, as specified
8315 by the ABI. Instead, the offset is set to the address of
8316 the GOT slot for this function. See EABI 4.4.4.1. */
8317 rela.r_offset = (htab->sgotplt->output_section->vma
8318 + htab->sgotplt->output_offset
8324 asection *splt = htab->plt;
8325 if (!htab->elf.dynamic_sections_created
8326 || h->dynindx == -1)
8329 rela.r_offset = (splt->output_section->vma
8330 + splt->output_offset
8332 if (htab->plt_type == PLT_OLD
8333 || !htab->elf.dynamic_sections_created
8334 || h->dynindx == -1)
8336 /* We don't need to fill in the .plt. The ppc dynamic
8337 linker will fill it in. */
8341 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8342 + htab->glink->output_section->vma
8343 + htab->glink->output_offset);
8344 bfd_put_32 (output_bfd, val,
8345 splt->contents + ent->plt.offset);
8349 /* Fill in the entry in the .rela.plt section. */
8351 if (!htab->elf.dynamic_sections_created
8352 || h->dynindx == -1)
8354 BFD_ASSERT (h->type == STT_GNU_IFUNC
8356 && (h->root.type == bfd_link_hash_defined
8357 || h->root.type == bfd_link_hash_defweak));
8358 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8359 rela.r_addend = SYM_VAL (h);
8362 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
8364 if (!htab->elf.dynamic_sections_created
8365 || h->dynindx == -1)
8366 loc = (htab->reliplt->contents
8367 + (htab->reliplt->reloc_count++
8368 * sizeof (Elf32_External_Rela)));
8370 loc = (htab->relplt->contents
8371 + reloc_index * sizeof (Elf32_External_Rela));
8372 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8374 if (!h->def_regular)
8376 /* Mark the symbol as undefined, rather than as
8377 defined in the .plt section. Leave the value if
8378 there were any relocations where pointer equality
8379 matters (this is a clue for the dynamic linker, to
8380 make function pointer comparisons work between an
8381 application and shared library), otherwise set it
8383 sym->st_shndx = SHN_UNDEF;
8384 if (!h->pointer_equality_needed)
8386 else if (!h->ref_regular_nonweak)
8388 /* This breaks function pointer comparisons, but
8389 that is better than breaking tests for a NULL
8390 function pointer. */
8394 else if (h->type == STT_GNU_IFUNC
8397 /* Set the value of ifunc symbols in a non-pie
8398 executable to the glink entry. This is to avoid
8399 text relocations. We can't do this for ifunc in
8400 allocate_dynrelocs, as we do for normal dynamic
8401 function symbols with plt entries, because we need
8402 to keep the original value around for the ifunc
8404 sym->st_shndx = (_bfd_elf_section_from_bfd_section
8405 (output_bfd, htab->glink->output_section));
8406 sym->st_value = (ent->glink_offset
8407 + htab->glink->output_offset
8408 + htab->glink->output_section->vma);
8413 if (htab->plt_type == PLT_NEW
8414 || !htab->elf.dynamic_sections_created
8415 || h->dynindx == -1)
8418 asection *splt = htab->plt;
8419 if (!htab->elf.dynamic_sections_created
8420 || h->dynindx == -1)
8423 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
8425 if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
8427 bfd_put_32 (output_bfd, LWZ_11_3, p);
8429 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
8431 bfd_put_32 (output_bfd, MR_0_3, p);
8433 bfd_put_32 (output_bfd, CMPWI_11_0, p);
8435 bfd_put_32 (output_bfd, ADD_3_12_2, p);
8437 bfd_put_32 (output_bfd, BEQLR, p);
8439 bfd_put_32 (output_bfd, MR_3_0, p);
8441 bfd_put_32 (output_bfd, NOP, p);
8445 write_glink_stub (ent, splt, p, info);
8448 /* We only need one non-PIC glink stub. */
8458 Elf_Internal_Rela rela;
8461 /* This symbols needs a copy reloc. Set it up. */
8464 fprintf (stderr, ", copy");
8467 BFD_ASSERT (h->dynindx != -1);
8469 if (ppc_elf_hash_entry (h)->has_sda_refs)
8473 BFD_ASSERT (s != NULL);
8475 rela.r_offset = SYM_VAL (h);
8476 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8478 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8479 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8483 fprintf (stderr, "\n");
8486 /* Mark some specially defined symbols as absolute. */
8487 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8488 || (!htab->is_vxworks
8489 && (h == htab->elf.hgot
8490 || strcmp (h->root.root.string,
8491 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
8492 sym->st_shndx = SHN_ABS;
8497 static enum elf_reloc_type_class
8498 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8500 switch (ELF32_R_TYPE (rela->r_info))
8502 case R_PPC_RELATIVE:
8503 return reloc_class_relative;
8506 case R_PPC_JMP_SLOT:
8507 return reloc_class_plt;
8509 return reloc_class_copy;
8511 return reloc_class_normal;
8515 /* Finish up the dynamic sections. */
8518 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8519 struct bfd_link_info *info)
8523 struct ppc_elf_link_hash_table *htab;
8526 bfd_boolean ret = TRUE;
8529 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8532 htab = ppc_elf_hash_table (info);
8533 dynobj = elf_hash_table (info)->dynobj;
8534 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8535 if (htab->is_vxworks)
8536 splt = bfd_get_section_by_name (dynobj, ".plt");
8541 if (htab->elf.hgot != NULL)
8542 got = SYM_VAL (htab->elf.hgot);
8544 if (htab->elf.dynamic_sections_created)
8546 Elf32_External_Dyn *dyncon, *dynconend;
8548 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
8550 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8551 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8552 for (; dyncon < dynconend; dyncon++)
8554 Elf_Internal_Dyn dyn;
8557 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
8562 if (htab->is_vxworks)
8566 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8570 dyn.d_un.d_val = htab->relplt->size;
8575 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8579 dyn.d_un.d_ptr = got;
8583 if (htab->is_vxworks)
8586 dyn.d_un.d_ptr -= htab->relplt->size;
8592 if (htab->is_vxworks
8593 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8598 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8602 if (htab->got != NULL)
8604 if (htab->elf.hgot->root.u.def.section == htab->got
8605 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
8607 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
8609 p += htab->elf.hgot->root.u.def.value;
8610 if (htab->plt_type == PLT_OLD)
8612 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8613 so that a function can easily find the address of
8614 _GLOBAL_OFFSET_TABLE_. */
8615 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8616 < htab->elf.hgot->root.u.def.section->size);
8617 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8622 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8623 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8624 < htab->elf.hgot->root.u.def.section->size);
8625 bfd_put_32 (output_bfd, val, p);
8630 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
8631 htab->elf.hgot->root.root.string,
8632 (htab->sgotplt != NULL
8633 ? htab->sgotplt->name : htab->got->name));
8634 bfd_set_error (bfd_error_bad_value);
8638 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8641 /* Fill in the first entry in the VxWorks procedure linkage table. */
8642 if (splt && splt->size > 0)
8644 /* Use the right PLT. */
8645 const bfd_vma *plt_entry = (info->shared
8646 ? ppc_elf_vxworks_pic_plt0_entry
8647 : ppc_elf_vxworks_plt0_entry);
8651 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
8653 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
8654 splt->contents + 0);
8655 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
8656 splt->contents + 4);
8660 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8661 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8663 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8664 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8665 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8666 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8667 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8668 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8672 Elf_Internal_Rela rela;
8675 loc = htab->srelplt2->contents;
8677 /* Output the @ha relocation for the first instruction. */
8678 rela.r_offset = (htab->plt->output_section->vma
8679 + htab->plt->output_offset
8681 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8683 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8684 loc += sizeof (Elf32_External_Rela);
8686 /* Output the @l relocation for the second instruction. */
8687 rela.r_offset = (htab->plt->output_section->vma
8688 + htab->plt->output_offset
8690 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8692 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8693 loc += sizeof (Elf32_External_Rela);
8695 /* Fix up the remaining relocations. They may have the wrong
8696 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8697 in which symbols were output. */
8698 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8700 Elf_Internal_Rela rel;
8702 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8703 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8704 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8705 loc += sizeof (Elf32_External_Rela);
8707 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8708 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8709 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8710 loc += sizeof (Elf32_External_Rela);
8712 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8713 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
8714 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8715 loc += sizeof (Elf32_External_Rela);
8720 if (htab->glink != NULL
8721 && htab->glink->contents != NULL
8722 && htab->elf.dynamic_sections_created)
8725 unsigned char *endp;
8730 * PIC glink code is the following:
8732 * # ith PLT code stub.
8733 * addis 11,30,(plt+(i-1)*4-got)@ha
8734 * lwz 11,(plt+(i-1)*4-got)@l(11)
8738 * # A table of branches, one for each plt entry.
8739 * # The idea is that the plt call stub loads ctr and r11 with these
8740 * # addresses, so (r11 - res_0) gives the plt index * 4.
8741 * res_0: b PLTresolve
8742 * res_1: b PLTresolve
8744 * # Some number of entries towards the end can be nops
8750 * addis 11,11,(1f-res_0)@ha
8753 * 1: addi 11,11,(1b-res_0)@l
8756 * sub 11,11,12 # r11 = index * 4
8757 * addis 12,12,(got+4-1b)@ha
8758 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8759 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8762 * add 11,0,11 # r11 = index * 12 = reloc offset.
8765 static const unsigned int pic_plt_resolve[] =
8786 * Non-PIC glink code is a little simpler.
8788 * # ith PLT code stub.
8789 * lis 11,(plt+(i-1)*4)@ha
8790 * lwz 11,(plt+(i-1)*4)@l(11)
8794 * The branch table is the same, then comes
8798 * addis 11,11,(-res_0)@ha
8799 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8800 * addi 11,11,(-res_0)@l # r11 = index * 4
8803 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8804 * add 11,0,11 # r11 = index * 12 = reloc offset.
8807 static const unsigned int plt_resolve[] =
8827 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8829 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
8832 /* Build the branch table, one for each plt entry (less one),
8833 and perhaps some padding. */
8834 p = htab->glink->contents;
8835 p += htab->glink_pltresolve;
8836 endp = htab->glink->contents;
8837 endp += htab->glink->size - GLINK_PLTRESOLVE;
8838 while (p < endp - 8 * 4)
8840 bfd_put_32 (output_bfd, B + endp - p, p);
8845 bfd_put_32 (output_bfd, NOP, p);
8849 res0 = (htab->glink_pltresolve
8850 + htab->glink->output_section->vma
8851 + htab->glink->output_offset);
8853 /* Last comes the PLTresolve stub. */
8858 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8860 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8863 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8865 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8866 + htab->glink->output_section->vma
8867 + htab->glink->output_offset);
8869 bfd_put_32 (output_bfd,
8870 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8871 bfd_put_32 (output_bfd,
8872 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8873 bfd_put_32 (output_bfd,
8874 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8875 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8877 bfd_put_32 (output_bfd,
8878 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8879 bfd_put_32 (output_bfd,
8880 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8884 bfd_put_32 (output_bfd,
8885 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8886 bfd_put_32 (output_bfd,
8887 LWZ_12_12 + 4, p + 9*4);
8892 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8894 bfd_put_32 (output_bfd, plt_resolve[i], p);
8897 p -= 4 * ARRAY_SIZE (plt_resolve);
8899 bfd_put_32 (output_bfd,
8900 LIS_12 + PPC_HA (got + 4), p + 0*4);
8901 bfd_put_32 (output_bfd,
8902 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8903 bfd_put_32 (output_bfd,
8904 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8905 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8907 bfd_put_32 (output_bfd,
8908 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8909 bfd_put_32 (output_bfd,
8910 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8914 bfd_put_32 (output_bfd,
8915 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8916 bfd_put_32 (output_bfd,
8917 LWZ_12_12 + 4, p + 6*4);
8925 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8926 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8927 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8928 #define TARGET_BIG_NAME "elf32-powerpc"
8929 #define ELF_ARCH bfd_arch_powerpc
8930 #define ELF_TARGET_ID PPC32_ELF_DATA
8931 #define ELF_MACHINE_CODE EM_PPC
8932 #ifdef __QNXTARGET__
8933 #define ELF_MAXPAGESIZE 0x1000
8935 #define ELF_MAXPAGESIZE 0x10000
8937 #define ELF_MINPAGESIZE 0x1000
8938 #define ELF_COMMONPAGESIZE 0x1000
8939 #define elf_info_to_howto ppc_elf_info_to_howto
8941 #ifdef EM_CYGNUS_POWERPC
8942 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8946 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8949 #define elf_backend_plt_not_loaded 1
8950 #define elf_backend_can_gc_sections 1
8951 #define elf_backend_can_refcount 1
8952 #define elf_backend_rela_normal 1
8954 #define bfd_elf32_mkobject ppc_elf_mkobject
8955 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8956 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8957 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8958 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8959 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8960 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8961 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8963 #define elf_backend_object_p ppc_elf_object_p
8964 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8965 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8966 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8967 #define elf_backend_relocate_section ppc_elf_relocate_section
8968 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8969 #define elf_backend_check_relocs ppc_elf_check_relocs
8970 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8971 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8972 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8973 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8974 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8975 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8976 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8977 #define elf_backend_fake_sections ppc_elf_fake_sections
8978 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8979 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8980 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8981 #define elf_backend_write_core_note ppc_elf_write_core_note
8982 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8983 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8984 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8985 #define elf_backend_write_section ppc_elf_write_section
8986 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8987 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8988 #define elf_backend_action_discarded ppc_elf_action_discarded
8989 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8990 #define elf_backend_post_process_headers _bfd_elf_set_osabi
8992 #include "elf32-target.h"
8994 /* VxWorks Target */
8996 #undef TARGET_LITTLE_SYM
8997 #undef TARGET_LITTLE_NAME
8999 #undef TARGET_BIG_SYM
9000 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
9001 #undef TARGET_BIG_NAME
9002 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
9004 /* VxWorks uses the elf default section flags for .plt. */
9005 static const struct bfd_elf_special_section *
9006 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9008 if (sec->name == NULL)
9011 if (strcmp (sec->name, ".plt") == 0)
9012 return _bfd_elf_get_sec_type_attr (abfd, sec);
9014 return ppc_elf_get_sec_type_attr (abfd, sec);
9017 /* Like ppc_elf_link_hash_table_create, but overrides
9018 appropriately for VxWorks. */
9019 static struct bfd_link_hash_table *
9020 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
9022 struct bfd_link_hash_table *ret;
9024 ret = ppc_elf_link_hash_table_create (abfd);
9027 struct ppc_elf_link_hash_table *htab
9028 = (struct ppc_elf_link_hash_table *)ret;
9029 htab->is_vxworks = 1;
9030 htab->plt_type = PLT_VXWORKS;
9031 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
9032 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
9033 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
9038 /* Tweak magic VxWorks symbols as they are loaded. */
9040 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
9041 struct bfd_link_info *info,
9042 Elf_Internal_Sym *sym,
9043 const char **namep ATTRIBUTE_UNUSED,
9044 flagword *flagsp ATTRIBUTE_UNUSED,
9048 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
9052 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
9056 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
9058 ppc_elf_final_write_processing(abfd, linker);
9059 elf_vxworks_final_write_processing(abfd, linker);
9062 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
9064 #undef elf_backend_want_plt_sym
9065 #define elf_backend_want_plt_sym 1
9066 #undef elf_backend_want_got_plt
9067 #define elf_backend_want_got_plt 1
9068 #undef elf_backend_got_symbol_offset
9069 #define elf_backend_got_symbol_offset 0
9070 #undef elf_backend_plt_not_loaded
9071 #define elf_backend_plt_not_loaded 0
9072 #undef elf_backend_plt_readonly
9073 #define elf_backend_plt_readonly 1
9074 #undef elf_backend_got_header_size
9075 #define elf_backend_got_header_size 12
9077 #undef bfd_elf32_get_synthetic_symtab
9079 #undef bfd_elf32_bfd_link_hash_table_create
9080 #define bfd_elf32_bfd_link_hash_table_create \
9081 ppc_elf_vxworks_link_hash_table_create
9082 #undef elf_backend_add_symbol_hook
9083 #define elf_backend_add_symbol_hook \
9084 ppc_elf_vxworks_add_symbol_hook
9085 #undef elf_backend_link_output_symbol_hook
9086 #define elf_backend_link_output_symbol_hook \
9087 elf_vxworks_link_output_symbol_hook
9088 #undef elf_backend_final_write_processing
9089 #define elf_backend_final_write_processing \
9090 ppc_elf_vxworks_final_write_processing
9091 #undef elf_backend_get_sec_type_attr
9092 #define elf_backend_get_sec_type_attr \
9093 ppc_elf_vxworks_get_sec_type_attr
9094 #undef elf_backend_emit_relocs
9095 #define elf_backend_emit_relocs \
9096 elf_vxworks_emit_relocs
9099 #define elf32_bed ppc_elf_vxworks_bed
9100 #undef elf_backend_post_process_headers
9102 #include "elf32-target.h"
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