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 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 TRUE, /* 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_TDATA)
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_pid = 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_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1998 shdr->sh_flags |= SHF_EXCLUDE;
2000 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2001 shdr->sh_type = SHT_ORDERED;
2006 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2007 need to bump up the number of section headers. */
2010 ppc_elf_additional_program_headers (bfd *abfd,
2011 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2016 s = bfd_get_section_by_name (abfd, ".sbss2");
2017 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2020 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2021 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2027 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2028 .PPC.EMB.sbss0 a normal section, and not a bss section so
2029 that the linker doesn't crater when trying to make more than
2032 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2034 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2035 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2036 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2037 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2038 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2039 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2040 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2041 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2042 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2043 { NULL, 0, 0, 0, 0 }
2046 /* This is what we want for new plt/got. */
2047 static struct bfd_elf_special_section ppc_alt_plt =
2048 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2050 static const struct bfd_elf_special_section *
2051 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2053 const struct bfd_elf_special_section *ssect;
2055 /* See if this is one of the special sections. */
2056 if (sec->name == NULL)
2059 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2063 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2064 ssect = &ppc_alt_plt;
2068 return _bfd_elf_get_sec_type_attr (abfd, sec);
2071 /* Very simple linked list structure for recording apuinfo values. */
2072 typedef struct apuinfo_list
2074 struct apuinfo_list *next;
2075 unsigned long value;
2079 static apuinfo_list *head;
2083 apuinfo_list_init (void)
2089 apuinfo_list_add (unsigned long value)
2091 apuinfo_list *entry = head;
2093 while (entry != NULL)
2095 if (entry->value == value)
2097 entry = entry->next;
2100 entry = bfd_malloc (sizeof (* entry));
2104 entry->value = value;
2110 apuinfo_list_length (void)
2112 apuinfo_list *entry;
2113 unsigned long count;
2115 for (entry = head, count = 0;
2117 entry = entry->next)
2123 static inline unsigned long
2124 apuinfo_list_element (unsigned long number)
2126 apuinfo_list * entry;
2130 entry = entry->next)
2133 return entry ? entry->value : 0;
2137 apuinfo_list_finish (void)
2139 apuinfo_list *entry;
2141 for (entry = head; entry;)
2143 apuinfo_list *next = entry->next;
2151 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2152 #define APUINFO_LABEL "APUinfo"
2154 /* Scan the input BFDs and create a linked list of
2155 the APUinfo values that will need to be emitted. */
2158 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2163 unsigned num_input_sections;
2164 bfd_size_type output_section_size;
2166 unsigned num_entries;
2167 unsigned long offset;
2168 unsigned long length;
2169 const char *error_message = NULL;
2171 if (link_info == NULL)
2174 /* Scan the input bfds, looking for apuinfo sections. */
2175 num_input_sections = 0;
2176 output_section_size = 0;
2178 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2180 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2183 ++ num_input_sections;
2184 output_section_size += asec->size;
2188 /* We need at least one input sections
2189 in order to make merging worthwhile. */
2190 if (num_input_sections < 1)
2193 /* Just make sure that the output section exists as well. */
2194 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2198 /* Allocate a buffer for the contents of the input sections. */
2199 buffer = bfd_malloc (output_section_size);
2204 apuinfo_list_init ();
2206 /* Read in the input sections contents. */
2207 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2209 unsigned long datum;
2212 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2216 length = asec->size;
2219 error_message = _("corrupt or empty %s section in %B");
2223 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2224 || (bfd_bread (buffer + offset, length, ibfd) != length))
2226 error_message = _("unable to read in %s section from %B");
2230 /* Process the contents of the section. */
2231 ptr = buffer + offset;
2232 error_message = _("corrupt %s section in %B");
2234 /* Verify the contents of the header. Note - we have to
2235 extract the values this way in order to allow for a
2236 host whose endian-ness is different from the target. */
2237 datum = bfd_get_32 (ibfd, ptr);
2238 if (datum != sizeof APUINFO_LABEL)
2241 datum = bfd_get_32 (ibfd, ptr + 8);
2245 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2248 /* Get the number of bytes used for apuinfo entries. */
2249 datum = bfd_get_32 (ibfd, ptr + 4);
2250 if (datum + 20 != length)
2253 /* Make sure that we do not run off the end of the section. */
2254 if (offset + length > output_section_size)
2257 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2258 for (i = 0; i < datum; i += 4)
2259 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2261 /* Update the offset. */
2265 error_message = NULL;
2267 /* Compute the size of the output section. */
2268 num_entries = apuinfo_list_length ();
2269 output_section_size = 20 + num_entries * 4;
2271 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2273 if (! bfd_set_section_size (abfd, asec, output_section_size))
2275 error_message = _("warning: unable to set size of %s section in %B");
2281 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2284 /* Prevent the output section from accumulating the input sections'
2285 contents. We have already stored this in our linked list structure. */
2288 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2289 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2291 bfd_byte *contents ATTRIBUTE_UNUSED)
2293 return (apuinfo_list_length ()
2294 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2297 /* Finally we can generate the output section. */
2300 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2305 unsigned num_entries;
2306 bfd_size_type length;
2308 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2312 if (apuinfo_list_length () == 0)
2315 length = asec->size;
2319 buffer = bfd_malloc (length);
2322 (*_bfd_error_handler)
2323 (_("failed to allocate space for new APUinfo section."));
2327 /* Create the apuinfo header. */
2328 num_entries = apuinfo_list_length ();
2329 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2330 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2331 bfd_put_32 (abfd, 0x2, buffer + 8);
2332 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2335 for (i = 0; i < num_entries; i++)
2337 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2341 if (length != asec->size)
2342 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2344 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2345 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2349 apuinfo_list_finish ();
2353 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2355 bfd_byte buf[GLINK_ENTRY_SIZE];
2357 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2360 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2361 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2362 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2363 && bfd_get_32 (abfd, buf + 12) == BCTR);
2367 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2369 bfd_vma vma = *(bfd_vma *) ptr;
2370 return ((section->flags & SEC_ALLOC) != 0
2371 && section->vma <= vma
2372 && vma < section->vma + section->size);
2376 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2377 long dynsymcount, asymbol **dynsyms,
2380 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2381 asection *plt, *relplt, *dynamic, *glink;
2382 bfd_vma glink_vma = 0;
2383 bfd_vma resolv_vma = 0;
2394 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2397 if (dynsymcount <= 0)
2400 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2404 plt = bfd_get_section_by_name (abfd, ".plt");
2408 /* Call common code to handle old-style executable PLTs. */
2409 if (elf_section_flags (plt) & SHF_EXECINSTR)
2410 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2411 dynsymcount, dynsyms, ret);
2413 /* If this object was prelinked, the prelinker stored the address
2414 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2415 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2416 if (dynamic != NULL)
2418 bfd_byte *dynbuf, *extdyn, *extdynend;
2420 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2422 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2425 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2426 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2429 extdynend = extdyn + dynamic->size;
2430 for (; extdyn < extdynend; extdyn += extdynsize)
2432 Elf_Internal_Dyn dyn;
2433 (*swap_dyn_in) (abfd, extdyn, &dyn);
2435 if (dyn.d_tag == DT_NULL)
2438 if (dyn.d_tag == DT_PPC_GOT)
2440 unsigned int g_o_t = dyn.d_un.d_val;
2441 asection *got = bfd_get_section_by_name (abfd, ".got");
2443 && bfd_get_section_contents (abfd, got, buf,
2444 g_o_t - got->vma + 4, 4))
2445 glink_vma = bfd_get_32 (abfd, buf);
2452 /* Otherwise we read the first plt entry. */
2455 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2456 glink_vma = bfd_get_32 (abfd, buf);
2462 /* The .glink section usually does not survive the final
2463 link; search for the section (usually .text) where the
2464 glink stubs now reside. */
2465 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2469 /* Determine glink PLT resolver by reading the relative branch
2470 from the first glink stub. */
2471 if (bfd_get_section_contents (abfd, glink, buf,
2472 glink_vma - glink->vma, 4))
2474 unsigned int insn = bfd_get_32 (abfd, buf);
2476 /* The first glink stub may either branch to the resolver ... */
2478 if ((insn & ~0x3fffffc) == 0)
2479 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2481 /* ... or fall through a bunch of NOPs. */
2482 else if ((insn ^ B ^ NOP) == 0)
2484 bfd_get_section_contents (abfd, glink, buf,
2485 glink_vma - glink->vma + i, 4);
2487 if (bfd_get_32 (abfd, buf) != NOP)
2489 resolv_vma = glink_vma + i;
2494 count = relplt->size / sizeof (Elf32_External_Rela);
2495 stub_vma = glink_vma - (bfd_vma) count * 16;
2496 /* If the stubs are those for -shared/-pie then we might have
2497 multiple stubs for each plt entry. If that is the case then
2498 there is no way to associate stubs with their plt entries short
2499 of figuring out the GOT pointer value used in the stub. */
2500 if (!is_nonpic_glink_stub (abfd, glink,
2501 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2504 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2505 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2508 size = count * sizeof (asymbol);
2509 p = relplt->relocation;
2510 for (i = 0; i < count; i++, p++)
2512 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2514 size += sizeof ("+0x") - 1 + 8;
2517 size += sizeof (asymbol) + sizeof ("__glink");
2520 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2522 s = *ret = bfd_malloc (size);
2526 names = (char *) (s + count + 1 + (resolv_vma != 0));
2527 p = relplt->relocation;
2528 for (i = 0; i < count; i++, p++)
2532 *s = **p->sym_ptr_ptr;
2533 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2534 we are defining a symbol, ensure one of them is set. */
2535 if ((s->flags & BSF_LOCAL) == 0)
2536 s->flags |= BSF_GLOBAL;
2537 s->flags |= BSF_SYNTHETIC;
2539 s->value = stub_vma - glink->vma;
2542 len = strlen ((*p->sym_ptr_ptr)->name);
2543 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2547 memcpy (names, "+0x", sizeof ("+0x") - 1);
2548 names += sizeof ("+0x") - 1;
2549 bfd_sprintf_vma (abfd, names, p->addend);
2550 names += strlen (names);
2552 memcpy (names, "@plt", sizeof ("@plt"));
2553 names += sizeof ("@plt");
2558 /* Add a symbol at the start of the glink branch table. */
2559 memset (s, 0, sizeof *s);
2561 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2563 s->value = glink_vma - glink->vma;
2565 memcpy (names, "__glink", sizeof ("__glink"));
2566 names += sizeof ("__glink");
2572 /* Add a symbol for the glink PLT resolver. */
2573 memset (s, 0, sizeof *s);
2575 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2577 s->value = resolv_vma - glink->vma;
2579 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2580 names += sizeof ("__glink_PLTresolve");
2588 /* The following functions are specific to the ELF linker, while
2589 functions above are used generally. They appear in this file more
2590 or less in the order in which they are called. eg.
2591 ppc_elf_check_relocs is called early in the link process,
2592 ppc_elf_finish_dynamic_sections is one of the last functions
2595 /* The PPC linker needs to keep track of the number of relocs that it
2596 decides to copy as dynamic relocs in check_relocs for each symbol.
2597 This is so that it can later discard them if they are found to be
2598 unnecessary. We store the information in a field extending the
2599 regular ELF linker hash table. */
2601 struct ppc_elf_dyn_relocs
2603 struct ppc_elf_dyn_relocs *next;
2605 /* The input section of the reloc. */
2608 /* Total number of relocs copied for the input section. */
2609 bfd_size_type count;
2611 /* Number of pc-relative relocs copied for the input section. */
2612 bfd_size_type pc_count;
2615 /* Track PLT entries needed for a given symbol. We might need more
2616 than one glink entry per symbol when generating a pic binary. */
2619 struct plt_entry *next;
2621 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2622 This field stores the offset into .got2 used to initialise the
2623 GOT pointer reg. It will always be at least 32768. (Current
2624 gcc always uses an offset of 32768, but ld -r will pack .got2
2625 sections together resulting in larger offsets). */
2628 /* The .got2 section. */
2631 /* PLT refcount or offset. */
2634 bfd_signed_vma refcount;
2638 /* .glink stub offset. */
2639 bfd_vma glink_offset;
2642 /* Of those relocs that might be copied as dynamic relocs, this function
2643 selects those that must be copied when linking a shared library,
2644 even when the symbol is local. */
2647 must_be_dyn_reloc (struct bfd_link_info *info,
2648 enum elf_ppc_reloc_type r_type)
2657 case R_PPC_REL14_BRTAKEN:
2658 case R_PPC_REL14_BRNTAKEN:
2664 case R_PPC_TPREL16_LO:
2665 case R_PPC_TPREL16_HI:
2666 case R_PPC_TPREL16_HA:
2667 return !info->executable;
2671 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2672 copying dynamic variables from a shared lib into an app's dynbss
2673 section, and instead use a dynamic relocation to point into the
2675 #define ELIMINATE_COPY_RELOCS 1
2677 /* PPC ELF linker hash entry. */
2679 struct ppc_elf_link_hash_entry
2681 struct elf_link_hash_entry elf;
2683 /* If this symbol is used in the linker created sections, the processor
2684 specific backend uses this field to map the field into the offset
2685 from the beginning of the section. */
2686 elf_linker_section_pointers_t *linker_section_pointer;
2688 /* Track dynamic relocs copied for this symbol. */
2689 struct ppc_elf_dyn_relocs *dyn_relocs;
2691 /* Contexts in which symbol is used in the GOT (or TOC).
2692 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2693 corresponding relocs are encountered during check_relocs.
2694 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2695 indicate the corresponding GOT entry type is not needed. */
2696 #define TLS_GD 1 /* GD reloc. */
2697 #define TLS_LD 2 /* LD reloc. */
2698 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2699 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2700 #define TLS_TLS 16 /* Any TLS reloc. */
2701 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2702 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
2705 /* Nonzero if we have seen a small data relocation referring to this
2707 unsigned char has_sda_refs;
2710 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2712 /* PPC ELF linker hash table. */
2714 struct ppc_elf_link_hash_table
2716 struct elf_link_hash_table elf;
2718 /* Short-cuts to get to dynamic linker sections. */
2730 elf_linker_section_t sdata[2];
2733 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2736 /* The .got.plt section (VxWorks only)*/
2739 /* Shortcut to __tls_get_addr. */
2740 struct elf_link_hash_entry *tls_get_addr;
2742 /* The bfd that forced an old-style PLT. */
2745 /* TLS local dynamic got entry handling. */
2747 bfd_signed_vma refcount;
2751 /* Offset of branch table to PltResolve function in glink. */
2752 bfd_vma glink_pltresolve;
2754 /* Size of reserved GOT entries. */
2755 unsigned int got_header_size;
2756 /* Non-zero if allocating the header left a gap. */
2757 unsigned int got_gap;
2759 /* The type of PLT we have chosen to use. */
2760 enum ppc_elf_plt_type plt_type;
2762 /* Set if we should emit symbols for stubs. */
2763 unsigned int emit_stub_syms:1;
2765 /* Set if __tls_get_addr optimization should not be done. */
2766 unsigned int no_tls_get_addr_opt:1;
2768 /* True if the target system is VxWorks. */
2769 unsigned int is_vxworks:1;
2771 /* The size of PLT entries. */
2773 /* The distance between adjacent PLT slots. */
2775 /* The size of the first PLT entry. */
2776 int plt_initial_entry_size;
2778 /* Small local sym cache. */
2779 struct sym_cache sym_cache;
2782 /* Get the PPC ELF linker hash table from a link_info structure. */
2784 #define ppc_elf_hash_table(p) \
2785 ((struct ppc_elf_link_hash_table *) (p)->hash)
2787 /* Create an entry in a PPC ELF linker hash table. */
2789 static struct bfd_hash_entry *
2790 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2791 struct bfd_hash_table *table,
2794 /* Allocate the structure if it has not already been allocated by a
2798 entry = bfd_hash_allocate (table,
2799 sizeof (struct ppc_elf_link_hash_entry));
2804 /* Call the allocation method of the superclass. */
2805 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2808 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2809 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2810 ppc_elf_hash_entry (entry)->tls_mask = 0;
2816 /* Create a PPC ELF linker hash table. */
2818 static struct bfd_link_hash_table *
2819 ppc_elf_link_hash_table_create (bfd *abfd)
2821 struct ppc_elf_link_hash_table *ret;
2823 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2827 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2828 ppc_elf_link_hash_newfunc,
2829 sizeof (struct ppc_elf_link_hash_entry)))
2835 ret->elf.init_plt_refcount.refcount = 0;
2836 ret->elf.init_plt_refcount.glist = NULL;
2837 ret->elf.init_plt_offset.offset = 0;
2838 ret->elf.init_plt_offset.glist = NULL;
2840 ret->sdata[0].name = ".sdata";
2841 ret->sdata[0].sym_name = "_SDA_BASE_";
2842 ret->sdata[0].bss_name = ".sbss";
2844 ret->sdata[1].name = ".sdata2";
2845 ret->sdata[1].sym_name = "_SDA2_BASE_";
2846 ret->sdata[1].bss_name = ".sbss2";
2848 ret->plt_entry_size = 12;
2849 ret->plt_slot_size = 8;
2850 ret->plt_initial_entry_size = 72;
2852 return &ret->elf.root;
2855 /* Create .got and the related sections. */
2858 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2860 struct ppc_elf_link_hash_table *htab;
2864 if (!_bfd_elf_create_got_section (abfd, info))
2867 htab = ppc_elf_hash_table (info);
2868 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2872 if (htab->is_vxworks)
2874 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2880 /* The powerpc .got has a blrl instruction in it. Mark it
2882 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2883 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2884 if (!bfd_set_section_flags (abfd, s, flags))
2888 htab->relgot = bfd_get_section_by_name (abfd, ".rela.got");
2896 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
2898 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2902 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
2903 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2904 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
2907 || !bfd_set_section_alignment (abfd, s, 4))
2910 flags = SEC_ALLOC | SEC_LINKER_CREATED;
2911 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
2914 || !bfd_set_section_alignment (abfd, s, 4))
2917 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2918 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2919 s = bfd_make_section_with_flags (abfd, ".rela.iplt", flags);
2922 || ! bfd_set_section_alignment (abfd, s, 2))
2927 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2928 to output sections (just like _bfd_elf_create_dynamic_sections has
2929 to create .dynbss and .rela.bss). */
2932 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2934 struct ppc_elf_link_hash_table *htab;
2938 htab = ppc_elf_hash_table (info);
2940 if (htab->got == NULL
2941 && !ppc_elf_create_got (abfd, info))
2944 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2947 if (htab->glink == NULL
2948 && !ppc_elf_create_glink (abfd, info))
2951 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2952 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2953 SEC_ALLOC | SEC_LINKER_CREATED);
2960 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2961 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2962 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2963 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2966 || ! bfd_set_section_alignment (abfd, s, 2))
2970 if (htab->is_vxworks
2971 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2974 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2975 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2979 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2980 if (htab->plt_type == PLT_VXWORKS)
2981 /* The VxWorks PLT is a loaded section with contents. */
2982 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2983 return bfd_set_section_flags (abfd, s, flags);
2986 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2989 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2990 struct elf_link_hash_entry *dir,
2991 struct elf_link_hash_entry *ind)
2993 struct ppc_elf_link_hash_entry *edir, *eind;
2995 edir = (struct ppc_elf_link_hash_entry *) dir;
2996 eind = (struct ppc_elf_link_hash_entry *) ind;
2998 if (eind->dyn_relocs != NULL)
3000 if (edir->dyn_relocs != NULL)
3002 struct ppc_elf_dyn_relocs **pp;
3003 struct ppc_elf_dyn_relocs *p;
3005 /* Add reloc counts against the indirect sym to the direct sym
3006 list. Merge any entries against the same section. */
3007 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3009 struct ppc_elf_dyn_relocs *q;
3011 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3012 if (q->sec == p->sec)
3014 q->pc_count += p->pc_count;
3015 q->count += p->count;
3022 *pp = edir->dyn_relocs;
3025 edir->dyn_relocs = eind->dyn_relocs;
3026 eind->dyn_relocs = NULL;
3029 edir->tls_mask |= eind->tls_mask;
3030 edir->has_sda_refs |= eind->has_sda_refs;
3032 /* If called to transfer flags for a weakdef during processing
3033 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3034 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3035 if (!(ELIMINATE_COPY_RELOCS
3036 && eind->elf.root.type != bfd_link_hash_indirect
3037 && edir->elf.dynamic_adjusted))
3038 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3040 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3041 edir->elf.ref_regular |= eind->elf.ref_regular;
3042 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3043 edir->elf.needs_plt |= eind->elf.needs_plt;
3044 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3046 /* If we were called to copy over info for a weak sym, that's all. */
3047 if (eind->elf.root.type != bfd_link_hash_indirect)
3050 /* Copy over the GOT refcount entries that we may have already seen to
3051 the symbol which just became indirect. */
3052 edir->elf.got.refcount += eind->elf.got.refcount;
3053 eind->elf.got.refcount = 0;
3055 /* And plt entries. */
3056 if (eind->elf.plt.plist != NULL)
3058 if (edir->elf.plt.plist != NULL)
3060 struct plt_entry **entp;
3061 struct plt_entry *ent;
3063 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3065 struct plt_entry *dent;
3067 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3068 if (dent->sec == ent->sec && dent->addend == ent->addend)
3070 dent->plt.refcount += ent->plt.refcount;
3077 *entp = edir->elf.plt.plist;
3080 edir->elf.plt.plist = eind->elf.plt.plist;
3081 eind->elf.plt.plist = NULL;
3084 if (eind->elf.dynindx != -1)
3086 if (edir->elf.dynindx != -1)
3087 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3088 edir->elf.dynstr_index);
3089 edir->elf.dynindx = eind->elf.dynindx;
3090 edir->elf.dynstr_index = eind->elf.dynstr_index;
3091 eind->elf.dynindx = -1;
3092 eind->elf.dynstr_index = 0;
3096 /* Hook called by the linker routine which adds symbols from an object
3097 file. We use it to put .comm items in .sbss, and not .bss. */
3100 ppc_elf_add_symbol_hook (bfd *abfd,
3101 struct bfd_link_info *info,
3102 Elf_Internal_Sym *sym,
3103 const char **namep ATTRIBUTE_UNUSED,
3104 flagword *flagsp ATTRIBUTE_UNUSED,
3108 if (sym->st_shndx == SHN_COMMON
3109 && !info->relocatable
3110 && is_ppc_elf (info->output_bfd)
3111 && sym->st_size <= elf_gp_size (abfd))
3113 /* Common symbols less than or equal to -G nn bytes are automatically
3115 struct ppc_elf_link_hash_table *htab;
3117 htab = ppc_elf_hash_table (info);
3118 if (htab->sbss == NULL)
3120 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3122 if (!htab->elf.dynobj)
3123 htab->elf.dynobj = abfd;
3125 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3128 if (htab->sbss == NULL)
3133 *valp = sym->st_size;
3136 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3137 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
3143 create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3145 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3147 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3149 if (lsect->sym == NULL)
3151 if (lsect->sym->root.type == bfd_link_hash_new)
3152 lsect->sym->non_elf = 0;
3153 lsect->sym->ref_regular = 1;
3154 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3158 /* Create a special linker section. */
3161 ppc_elf_create_linker_section (bfd *abfd,
3162 struct bfd_link_info *info,
3164 elf_linker_section_t *lsect)
3166 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3169 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3170 | SEC_LINKER_CREATED);
3172 /* Record the first bfd that needs the special sections. */
3173 if (!htab->elf.dynobj)
3174 htab->elf.dynobj = abfd;
3176 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3180 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3184 return create_sdata_sym (info, lsect);
3187 /* Find a linker generated pointer with a given addend and type. */
3189 static elf_linker_section_pointers_t *
3190 elf_find_pointer_linker_section
3191 (elf_linker_section_pointers_t *linker_pointers,
3193 elf_linker_section_t *lsect)
3195 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3196 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3197 return linker_pointers;
3202 /* Allocate a pointer to live in a linker created section. */
3205 elf_create_pointer_linker_section (bfd *abfd,
3206 elf_linker_section_t *lsect,
3207 struct elf_link_hash_entry *h,
3208 const Elf_Internal_Rela *rel)
3210 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3211 elf_linker_section_pointers_t *linker_section_ptr;
3212 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3215 BFD_ASSERT (lsect != NULL);
3217 /* Is this a global symbol? */
3220 struct ppc_elf_link_hash_entry *eh;
3222 /* Has this symbol already been allocated? If so, our work is done. */
3223 eh = (struct ppc_elf_link_hash_entry *) h;
3224 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3229 ptr_linker_section_ptr = &eh->linker_section_pointer;
3233 BFD_ASSERT (is_ppc_elf (abfd));
3235 /* Allocation of a pointer to a local symbol. */
3236 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3238 /* Allocate a table to hold the local symbols if first time. */
3241 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3244 amt *= sizeof (elf_linker_section_pointers_t *);
3245 ptr = bfd_zalloc (abfd, amt);
3250 elf_local_ptr_offsets (abfd) = ptr;
3253 /* Has this symbol already been allocated? If so, our work is done. */
3254 if (elf_find_pointer_linker_section (ptr[r_symndx],
3259 ptr_linker_section_ptr = &ptr[r_symndx];
3262 /* Allocate space for a pointer in the linker section, and allocate
3263 a new pointer record from internal memory. */
3264 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3265 amt = sizeof (elf_linker_section_pointers_t);
3266 linker_section_ptr = bfd_alloc (abfd, amt);
3268 if (!linker_section_ptr)
3271 linker_section_ptr->next = *ptr_linker_section_ptr;
3272 linker_section_ptr->addend = rel->r_addend;
3273 linker_section_ptr->lsect = lsect;
3274 *ptr_linker_section_ptr = linker_section_ptr;
3276 linker_section_ptr->offset = lsect->section->size;
3277 lsect->section->size += 4;
3281 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3282 lsect->name, (long) linker_section_ptr->offset,
3283 (long) lsect->section->size);
3289 static struct plt_entry **
3290 update_local_sym_info (bfd *abfd,
3291 Elf_Internal_Shdr *symtab_hdr,
3292 unsigned long r_symndx,
3295 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3296 struct plt_entry **local_plt;
3297 char *local_got_tls_masks;
3299 if (local_got_refcounts == NULL)
3301 bfd_size_type size = symtab_hdr->sh_info;
3303 size *= (sizeof (*local_got_refcounts)
3304 + sizeof (*local_plt)
3305 + sizeof (*local_got_tls_masks));
3306 local_got_refcounts = bfd_zalloc (abfd, size);
3307 if (local_got_refcounts == NULL)
3309 elf_local_got_refcounts (abfd) = local_got_refcounts;
3312 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3313 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3314 local_got_tls_masks[r_symndx] |= tls_type;
3315 if (tls_type != PLT_IFUNC)
3316 local_got_refcounts[r_symndx] += 1;
3317 return local_plt + r_symndx;
3321 update_plt_info (bfd *abfd, struct plt_entry **plist,
3322 asection *sec, bfd_vma addend)
3324 struct plt_entry *ent;
3328 for (ent = *plist; ent != NULL; ent = ent->next)
3329 if (ent->sec == sec && ent->addend == addend)
3333 bfd_size_type amt = sizeof (*ent);
3334 ent = bfd_alloc (abfd, amt);
3339 ent->addend = addend;
3340 ent->plt.refcount = 0;
3343 ent->plt.refcount += 1;
3347 static struct plt_entry *
3348 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3350 struct plt_entry *ent;
3354 for (ent = *plist; ent != NULL; ent = ent->next)
3355 if (ent->sec == sec && ent->addend == addend)
3361 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3363 return (r_type == R_PPC_PLTREL24
3364 || r_type == R_PPC_LOCAL24PC
3365 || r_type == R_PPC_REL24
3366 || r_type == R_PPC_REL14
3367 || r_type == R_PPC_REL14_BRTAKEN
3368 || r_type == R_PPC_REL14_BRNTAKEN
3369 || r_type == R_PPC_ADDR24
3370 || r_type == R_PPC_ADDR14
3371 || r_type == R_PPC_ADDR14_BRTAKEN
3372 || r_type == R_PPC_ADDR14_BRNTAKEN);
3376 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3378 (*_bfd_error_handler)
3379 (_("%B: relocation %s cannot be used when making a shared object"),
3381 ppc_elf_howto_table[r_type]->name);
3382 bfd_set_error (bfd_error_bad_value);
3385 /* Look through the relocs for a section during the first phase, and
3386 allocate space in the global offset table or procedure linkage
3390 ppc_elf_check_relocs (bfd *abfd,
3391 struct bfd_link_info *info,
3393 const Elf_Internal_Rela *relocs)
3395 struct ppc_elf_link_hash_table *htab;
3396 Elf_Internal_Shdr *symtab_hdr;
3397 struct elf_link_hash_entry **sym_hashes;
3398 const Elf_Internal_Rela *rel;
3399 const Elf_Internal_Rela *rel_end;
3400 asection *got2, *sreloc;
3401 struct elf_link_hash_entry *tga;
3403 if (info->relocatable)
3406 /* Don't do anything special with non-loaded, non-alloced sections.
3407 In particular, any relocs in such sections should not affect GOT
3408 and PLT reference counting (ie. we don't allow them to create GOT
3409 or PLT entries), there's no possibility or desire to optimize TLS
3410 relocs, and there's not much point in propagating relocs to shared
3411 libs that the dynamic linker won't relocate. */
3412 if ((sec->flags & SEC_ALLOC) == 0)
3416 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3420 BFD_ASSERT (is_ppc_elf (abfd));
3422 /* Initialize howto table if not already done. */
3423 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3424 ppc_elf_howto_init ();
3426 htab = ppc_elf_hash_table (info);
3427 if (htab->glink == NULL)
3429 if (htab->elf.dynobj == NULL)
3430 htab->elf.dynobj = abfd;
3431 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3434 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3435 FALSE, FALSE, TRUE);
3436 symtab_hdr = &elf_symtab_hdr (abfd);
3437 sym_hashes = elf_sym_hashes (abfd);
3438 got2 = bfd_get_section_by_name (abfd, ".got2");
3441 rel_end = relocs + sec->reloc_count;
3442 for (rel = relocs; rel < rel_end; rel++)
3444 unsigned long r_symndx;
3445 enum elf_ppc_reloc_type r_type;
3446 struct elf_link_hash_entry *h;
3448 struct plt_entry **ifunc;
3450 r_symndx = ELF32_R_SYM (rel->r_info);
3451 if (r_symndx < symtab_hdr->sh_info)
3455 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3456 while (h->root.type == bfd_link_hash_indirect
3457 || h->root.type == bfd_link_hash_warning)
3458 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3461 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3462 This shows up in particular in an R_PPC_ADDR32 in the eabi
3465 && htab->got == NULL
3466 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3468 if (htab->elf.dynobj == NULL)
3469 htab->elf.dynobj = abfd;
3470 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3472 BFD_ASSERT (h == htab->elf.hgot);
3477 r_type = ELF32_R_TYPE (rel->r_info);
3478 if (!htab->is_vxworks)
3482 if (h->type == STT_GNU_IFUNC)
3483 ifunc = &h->plt.plist;
3487 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3492 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3494 || is_branch_reloc (r_type)))
3498 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3503 /* STT_GNU_IFUNC symbols must have a PLT entry;
3504 In a non-pie executable even when there are
3507 if (r_type == R_PPC_PLTREL24)
3509 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3511 addend = rel->r_addend;
3513 if (!update_plt_info (abfd, ifunc, got2, addend))
3519 if (!htab->is_vxworks
3520 && is_branch_reloc (r_type)
3525 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3526 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3527 /* We have a new-style __tls_get_addr call with a marker
3531 /* Mark this section as having an old-style call. */
3532 sec->has_tls_get_addr_call = 1;
3539 /* These special tls relocs tie a call to __tls_get_addr with
3540 its parameter symbol. */
3543 case R_PPC_GOT_TLSLD16:
3544 case R_PPC_GOT_TLSLD16_LO:
3545 case R_PPC_GOT_TLSLD16_HI:
3546 case R_PPC_GOT_TLSLD16_HA:
3547 tls_type = TLS_TLS | TLS_LD;
3550 case R_PPC_GOT_TLSGD16:
3551 case R_PPC_GOT_TLSGD16_LO:
3552 case R_PPC_GOT_TLSGD16_HI:
3553 case R_PPC_GOT_TLSGD16_HA:
3554 tls_type = TLS_TLS | TLS_GD;
3557 case R_PPC_GOT_TPREL16:
3558 case R_PPC_GOT_TPREL16_LO:
3559 case R_PPC_GOT_TPREL16_HI:
3560 case R_PPC_GOT_TPREL16_HA:
3561 if (!info->executable)
3562 info->flags |= DF_STATIC_TLS;
3563 tls_type = TLS_TLS | TLS_TPREL;
3566 case R_PPC_GOT_DTPREL16:
3567 case R_PPC_GOT_DTPREL16_LO:
3568 case R_PPC_GOT_DTPREL16_HI:
3569 case R_PPC_GOT_DTPREL16_HA:
3570 tls_type = TLS_TLS | TLS_DTPREL;
3572 sec->has_tls_reloc = 1;
3575 /* GOT16 relocations */
3577 case R_PPC_GOT16_LO:
3578 case R_PPC_GOT16_HI:
3579 case R_PPC_GOT16_HA:
3580 /* This symbol requires a global offset table entry. */
3581 if (htab->got == NULL)
3583 if (htab->elf.dynobj == NULL)
3584 htab->elf.dynobj = abfd;
3585 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3590 h->got.refcount += 1;
3591 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3594 /* This is a global offset table entry for a local symbol. */
3595 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3598 /* We may also need a plt entry if the symbol turns out to be
3600 if (h != NULL && !info->shared)
3602 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3607 /* Indirect .sdata relocation. */
3608 case R_PPC_EMB_SDAI16:
3611 bad_shared_reloc (abfd, r_type);
3614 if (htab->sdata[0].section == NULL
3615 && !ppc_elf_create_linker_section (abfd, info, 0,
3618 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3623 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3624 h->non_got_ref = TRUE;
3628 /* Indirect .sdata2 relocation. */
3629 case R_PPC_EMB_SDA2I16:
3632 bad_shared_reloc (abfd, r_type);
3635 if (htab->sdata[1].section == NULL
3636 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3639 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3644 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3645 h->non_got_ref = TRUE;
3649 case R_PPC_SDAREL16:
3650 if (htab->sdata[0].sym == NULL
3651 && !create_sdata_sym (info, &htab->sdata[0]))
3655 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3656 h->non_got_ref = TRUE;
3660 case R_PPC_EMB_SDA2REL:
3663 bad_shared_reloc (abfd, r_type);
3666 if (htab->sdata[1].sym == NULL
3667 && !create_sdata_sym (info, &htab->sdata[1]))
3671 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3672 h->non_got_ref = TRUE;
3676 case R_PPC_EMB_SDA21:
3677 case R_PPC_EMB_RELSDA:
3680 bad_shared_reloc (abfd, r_type);
3683 if (htab->sdata[0].sym == NULL
3684 && !create_sdata_sym (info, &htab->sdata[0]))
3686 if (htab->sdata[1].sym == NULL
3687 && !create_sdata_sym (info, &htab->sdata[1]))
3691 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3692 h->non_got_ref = TRUE;
3696 case R_PPC_EMB_NADDR32:
3697 case R_PPC_EMB_NADDR16:
3698 case R_PPC_EMB_NADDR16_LO:
3699 case R_PPC_EMB_NADDR16_HI:
3700 case R_PPC_EMB_NADDR16_HA:
3703 bad_shared_reloc (abfd, r_type);
3707 h->non_got_ref = TRUE;
3710 case R_PPC_PLTREL24:
3715 case R_PPC_PLTREL32:
3716 case R_PPC_PLT16_LO:
3717 case R_PPC_PLT16_HI:
3718 case R_PPC_PLT16_HA:
3720 fprintf (stderr, "Reloc requires a PLT entry\n");
3722 /* This symbol requires a procedure linkage table entry. We
3723 actually build the entry in finish_dynamic_symbol,
3724 because this might be a case of linking PIC code without
3725 linking in any dynamic objects, in which case we don't
3726 need to generate a procedure linkage table after all. */
3730 /* It does not make sense to have a procedure linkage
3731 table entry for a local symbol. */
3732 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3736 (long) rel->r_offset,
3737 ppc_elf_howto_table[r_type]->name);
3738 bfd_set_error (bfd_error_bad_value);
3745 if (r_type == R_PPC_PLTREL24)
3747 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3749 addend = rel->r_addend;
3752 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
3757 /* The following relocations don't need to propagate the
3758 relocation if linking a shared object since they are
3759 section relative. */
3761 case R_PPC_SECTOFF_LO:
3762 case R_PPC_SECTOFF_HI:
3763 case R_PPC_SECTOFF_HA:
3764 case R_PPC_DTPREL16:
3765 case R_PPC_DTPREL16_LO:
3766 case R_PPC_DTPREL16_HI:
3767 case R_PPC_DTPREL16_HA:
3772 case R_PPC_REL16_LO:
3773 case R_PPC_REL16_HI:
3774 case R_PPC_REL16_HA:
3775 ppc_elf_tdata (abfd)->has_rel16 = 1;
3778 /* These are just markers. */
3780 case R_PPC_EMB_MRKREF:
3784 case R_PPC_RELAX_PLT:
3785 case R_PPC_RELAX_PLTREL24:
3788 /* These should only appear in dynamic objects. */
3790 case R_PPC_GLOB_DAT:
3791 case R_PPC_JMP_SLOT:
3792 case R_PPC_RELATIVE:
3793 case R_PPC_IRELATIVE:
3796 /* These aren't handled yet. We'll report an error later. */
3798 case R_PPC_EMB_RELSEC16:
3799 case R_PPC_EMB_RELST_LO:
3800 case R_PPC_EMB_RELST_HI:
3801 case R_PPC_EMB_RELST_HA:
3802 case R_PPC_EMB_BIT_FLD:
3805 /* This refers only to functions defined in the shared library. */
3806 case R_PPC_LOCAL24PC:
3807 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3809 htab->plt_type = PLT_OLD;
3810 htab->old_bfd = abfd;
3814 /* This relocation describes the C++ object vtable hierarchy.
3815 Reconstruct it for later use during GC. */
3816 case R_PPC_GNU_VTINHERIT:
3817 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3821 /* This relocation describes which C++ vtable entries are actually
3822 used. Record for later use during GC. */
3823 case R_PPC_GNU_VTENTRY:
3824 BFD_ASSERT (h != NULL);
3826 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3830 /* We shouldn't really be seeing these. */
3833 case R_PPC_TPREL16_LO:
3834 case R_PPC_TPREL16_HI:
3835 case R_PPC_TPREL16_HA:
3836 if (!info->executable)
3837 info->flags |= DF_STATIC_TLS;
3841 case R_PPC_DTPMOD32:
3842 case R_PPC_DTPREL32:
3848 && (sec->flags & SEC_CODE) != 0
3850 && htab->plt_type == PLT_UNSET)
3852 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3853 the start of a function, which assembles to a REL32
3854 reference to .got2. If we detect one of these, then
3855 force the old PLT layout because the linker cannot
3856 reliably deduce the GOT pointer value needed for
3859 Elf_Internal_Sym *isym;
3861 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3866 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3869 htab->plt_type = PLT_OLD;
3870 htab->old_bfd = abfd;
3873 if (h == NULL || h == htab->elf.hgot)
3879 case R_PPC_ADDR16_LO:
3880 case R_PPC_ADDR16_HI:
3881 case R_PPC_ADDR16_HA:
3884 if (h != NULL && !info->shared)
3886 /* We may need a plt entry if the symbol turns out to be
3887 a function defined in a dynamic object. */
3888 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3891 /* We may need a copy reloc too. */
3893 h->pointer_equality_needed = 1;
3899 case R_PPC_REL14_BRTAKEN:
3900 case R_PPC_REL14_BRNTAKEN:
3903 if (h == htab->elf.hgot)
3905 if (htab->plt_type == PLT_UNSET)
3907 htab->plt_type = PLT_OLD;
3908 htab->old_bfd = abfd;
3916 case R_PPC_ADDR14_BRTAKEN:
3917 case R_PPC_ADDR14_BRNTAKEN:
3918 if (h != NULL && !info->shared)
3920 /* We may need a plt entry if the symbol turns out to be
3921 a function defined in a dynamic object. */
3923 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3929 /* If we are creating a shared library, and this is a reloc
3930 against a global symbol, or a non PC relative reloc
3931 against a local symbol, then we need to copy the reloc
3932 into the shared library. However, if we are linking with
3933 -Bsymbolic, we do not need to copy a reloc against a
3934 global symbol which is defined in an object we are
3935 including in the link (i.e., DEF_REGULAR is set). At
3936 this point we have not seen all the input files, so it is
3937 possible that DEF_REGULAR is not set now but will be set
3938 later (it is never cleared). In case of a weak definition,
3939 DEF_REGULAR may be cleared later by a strong definition in
3940 a shared library. We account for that possibility below by
3941 storing information in the dyn_relocs field of the hash
3942 table entry. A similar situation occurs when creating
3943 shared libraries and symbol visibility changes render the
3946 If on the other hand, we are creating an executable, we
3947 may need to keep relocations for symbols satisfied by a
3948 dynamic library if we manage to avoid copy relocs for the
3951 && (must_be_dyn_reloc (info, r_type)
3953 && (! info->symbolic
3954 || h->root.type == bfd_link_hash_defweak
3955 || !h->def_regular))))
3956 || (ELIMINATE_COPY_RELOCS
3959 && (h->root.type == bfd_link_hash_defweak
3960 || !h->def_regular)))
3962 struct ppc_elf_dyn_relocs *p;
3963 struct ppc_elf_dyn_relocs **rel_head;
3967 "ppc_elf_check_relocs needs to "
3968 "create relocation for %s\n",
3969 (h && h->root.root.string
3970 ? h->root.root.string : "<unknown>"));
3974 if (htab->elf.dynobj == NULL)
3975 htab->elf.dynobj = abfd;
3977 sreloc = _bfd_elf_make_dynamic_reloc_section
3978 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3984 /* If this is a global symbol, we count the number of
3985 relocations we need for this symbol. */
3988 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
3992 /* Track dynamic relocs needed for local syms too.
3993 We really need local syms available to do this
3997 Elf_Internal_Sym *isym;
3999 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4004 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4008 vpp = &elf_section_data (s)->local_dynrel;
4009 rel_head = (struct ppc_elf_dyn_relocs **) vpp;
4013 if (p == NULL || p->sec != sec)
4015 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4018 p->next = *rel_head;
4026 if (!must_be_dyn_reloc (info, r_type))
4038 /* Merge object attributes from IBFD into OBFD. Raise an error if
4039 there are conflicting attributes. */
4041 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4043 obj_attribute *in_attr, *in_attrs;
4044 obj_attribute *out_attr, *out_attrs;
4046 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4048 /* This is the first object. Copy the attributes. */
4049 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4051 /* Use the Tag_null value to indicate the attributes have been
4053 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4058 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4059 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4061 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4062 non-conflicting ones. */
4063 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4064 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4065 if (in_attr->i != out_attr->i)
4068 if (out_attr->i == 0)
4069 out_attr->i = in_attr->i;
4070 else if (in_attr->i == 0)
4072 else if (out_attr->i == 1 && in_attr->i == 2)
4074 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4075 else if (out_attr->i == 1 && in_attr->i == 3)
4077 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4079 else if (out_attr->i == 3 && in_attr->i == 1)
4081 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4083 else if (out_attr->i == 3 && in_attr->i == 2)
4085 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4087 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4089 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4090 else if (in_attr->i > 3)
4092 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4096 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4100 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4101 merge non-conflicting ones. */
4102 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4103 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4104 if (in_attr->i != out_attr->i)
4106 const char *in_abi = NULL, *out_abi = NULL;
4110 case 1: in_abi = "generic"; break;
4111 case 2: in_abi = "AltiVec"; break;
4112 case 3: in_abi = "SPE"; break;
4115 switch (out_attr->i)
4117 case 1: out_abi = "generic"; break;
4118 case 2: out_abi = "AltiVec"; break;
4119 case 3: out_abi = "SPE"; break;
4123 if (out_attr->i == 0)
4124 out_attr->i = in_attr->i;
4125 else if (in_attr->i == 0)
4127 /* For now, allow generic to transition to AltiVec or SPE
4128 without a warning. If GCC marked files with their stack
4129 alignment and used don't-care markings for files which are
4130 not affected by the vector ABI, we could warn about this
4132 else if (out_attr->i == 1)
4133 out_attr->i = in_attr->i;
4134 else if (in_attr->i == 1)
4136 else if (in_abi == NULL)
4138 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4140 else if (out_abi == NULL)
4142 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4146 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4147 ibfd, obfd, in_abi, out_abi);
4150 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4151 and merge non-conflicting ones. */
4152 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4153 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4154 if (in_attr->i != out_attr->i)
4157 if (out_attr->i == 0)
4158 out_attr->i = in_attr->i;
4159 else if (in_attr->i == 0)
4161 else if (out_attr->i == 1 && in_attr->i == 2)
4163 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4164 else if (out_attr->i == 2 && in_attr->i == 1)
4166 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4167 else if (in_attr->i > 2)
4169 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4173 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4177 /* Merge Tag_compatibility attributes and any common GNU ones. */
4178 _bfd_elf_merge_object_attributes (ibfd, obfd);
4183 /* Merge backend specific data from an object file to the output
4184 object file when linking. */
4187 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4193 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4196 /* Check if we have the same endianess. */
4197 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4200 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4203 new_flags = elf_elfheader (ibfd)->e_flags;
4204 old_flags = elf_elfheader (obfd)->e_flags;
4205 if (!elf_flags_init (obfd))
4207 /* First call, no flags set. */
4208 elf_flags_init (obfd) = TRUE;
4209 elf_elfheader (obfd)->e_flags = new_flags;
4212 /* Compatible flags are ok. */
4213 else if (new_flags == old_flags)
4216 /* Incompatible flags. */
4219 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4220 to be linked with either. */
4222 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4223 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4226 (*_bfd_error_handler)
4227 (_("%B: compiled with -mrelocatable and linked with "
4228 "modules compiled normally"), ibfd);
4230 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4231 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4234 (*_bfd_error_handler)
4235 (_("%B: compiled normally and linked with "
4236 "modules compiled with -mrelocatable"), ibfd);
4239 /* The output is -mrelocatable-lib iff both the input files are. */
4240 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4241 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4243 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4244 but each input file is either -mrelocatable or -mrelocatable-lib. */
4245 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4246 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4247 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4248 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4250 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4251 any module uses it. */
4252 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4254 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4255 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4257 /* Warn about any other mismatches. */
4258 if (new_flags != old_flags)
4261 (*_bfd_error_handler)
4262 (_("%B: uses different e_flags (0x%lx) fields "
4263 "than previous modules (0x%lx)"),
4264 ibfd, (long) new_flags, (long) old_flags);
4269 bfd_set_error (bfd_error_bad_value);
4277 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4278 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4280 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4281 struct bfd_link_info *info,
4282 enum ppc_elf_plt_type plt_style,
4285 struct ppc_elf_link_hash_table *htab;
4288 htab = ppc_elf_hash_table (info);
4290 htab->emit_stub_syms = emit_stub_syms;
4292 if (htab->plt_type == PLT_UNSET)
4294 if (plt_style == PLT_OLD)
4295 htab->plt_type = PLT_OLD;
4299 enum ppc_elf_plt_type plt_type = plt_style;
4301 /* Look through the reloc flags left by ppc_elf_check_relocs.
4302 Use the old style bss plt if a file makes plt calls
4303 without using the new relocs, and if ld isn't given
4304 --secure-plt and we never see REL16 relocs. */
4305 if (plt_type == PLT_UNSET)
4307 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4308 if (is_ppc_elf (ibfd))
4310 if (ppc_elf_tdata (ibfd)->has_rel16)
4312 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4315 htab->old_bfd = ibfd;
4319 htab->plt_type = plt_type;
4322 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4323 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
4325 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4327 if (htab->plt_type == PLT_NEW)
4329 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4330 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4332 /* The new PLT is a loaded section. */
4333 if (htab->plt != NULL
4334 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4337 /* The new GOT is not executable. */
4338 if (htab->got != NULL
4339 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4344 /* Stop an unused .glink section from affecting .text alignment. */
4345 if (htab->glink != NULL
4346 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4349 return htab->plt_type == PLT_NEW;
4352 /* Return the section that should be marked against GC for a given
4356 ppc_elf_gc_mark_hook (asection *sec,
4357 struct bfd_link_info *info,
4358 Elf_Internal_Rela *rel,
4359 struct elf_link_hash_entry *h,
4360 Elf_Internal_Sym *sym)
4363 switch (ELF32_R_TYPE (rel->r_info))
4365 case R_PPC_GNU_VTINHERIT:
4366 case R_PPC_GNU_VTENTRY:
4370 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4373 /* Update the got, plt and dynamic reloc reference counts for the
4374 section being removed. */
4377 ppc_elf_gc_sweep_hook (bfd *abfd,
4378 struct bfd_link_info *info,
4380 const Elf_Internal_Rela *relocs)
4382 struct ppc_elf_link_hash_table *htab;
4383 Elf_Internal_Shdr *symtab_hdr;
4384 struct elf_link_hash_entry **sym_hashes;
4385 bfd_signed_vma *local_got_refcounts;
4386 const Elf_Internal_Rela *rel, *relend;
4389 if (info->relocatable)
4392 if ((sec->flags & SEC_ALLOC) == 0)
4395 elf_section_data (sec)->local_dynrel = NULL;
4397 htab = ppc_elf_hash_table (info);
4398 symtab_hdr = &elf_symtab_hdr (abfd);
4399 sym_hashes = elf_sym_hashes (abfd);
4400 local_got_refcounts = elf_local_got_refcounts (abfd);
4401 got2 = bfd_get_section_by_name (abfd, ".got2");
4403 relend = relocs + sec->reloc_count;
4404 for (rel = relocs; rel < relend; rel++)
4406 unsigned long r_symndx;
4407 enum elf_ppc_reloc_type r_type;
4408 struct elf_link_hash_entry *h = NULL;
4410 r_symndx = ELF32_R_SYM (rel->r_info);
4411 if (r_symndx >= symtab_hdr->sh_info)
4413 struct ppc_elf_dyn_relocs **pp, *p;
4414 struct ppc_elf_link_hash_entry *eh;
4416 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4417 while (h->root.type == bfd_link_hash_indirect
4418 || h->root.type == bfd_link_hash_warning)
4419 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4420 eh = (struct ppc_elf_link_hash_entry *) h;
4422 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4425 /* Everything must go for SEC. */
4431 r_type = ELF32_R_TYPE (rel->r_info);
4432 if (!htab->is_vxworks
4434 && local_got_refcounts != NULL
4436 || is_branch_reloc (r_type)))
4438 struct plt_entry **local_plt = (struct plt_entry **)
4439 (local_got_refcounts + symtab_hdr->sh_info);
4440 char *local_got_tls_masks = (char *)
4441 (local_plt + symtab_hdr->sh_info);
4442 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4444 struct plt_entry **ifunc = local_plt + r_symndx;
4446 struct plt_entry *ent;
4448 if (r_type == R_PPC_PLTREL24 && info->shared)
4449 addend = rel->r_addend;
4450 ent = find_plt_ent (ifunc, got2, addend);
4451 if (ent->plt.refcount > 0)
4452 ent->plt.refcount -= 1;
4459 case R_PPC_GOT_TLSLD16:
4460 case R_PPC_GOT_TLSLD16_LO:
4461 case R_PPC_GOT_TLSLD16_HI:
4462 case R_PPC_GOT_TLSLD16_HA:
4463 case R_PPC_GOT_TLSGD16:
4464 case R_PPC_GOT_TLSGD16_LO:
4465 case R_PPC_GOT_TLSGD16_HI:
4466 case R_PPC_GOT_TLSGD16_HA:
4467 case R_PPC_GOT_TPREL16:
4468 case R_PPC_GOT_TPREL16_LO:
4469 case R_PPC_GOT_TPREL16_HI:
4470 case R_PPC_GOT_TPREL16_HA:
4471 case R_PPC_GOT_DTPREL16:
4472 case R_PPC_GOT_DTPREL16_LO:
4473 case R_PPC_GOT_DTPREL16_HI:
4474 case R_PPC_GOT_DTPREL16_HA:
4476 case R_PPC_GOT16_LO:
4477 case R_PPC_GOT16_HI:
4478 case R_PPC_GOT16_HA:
4481 if (h->got.refcount > 0)
4485 struct plt_entry *ent;
4487 ent = find_plt_ent (&h->plt.plist, NULL, 0);
4488 if (ent != NULL && ent->plt.refcount > 0)
4489 ent->plt.refcount -= 1;
4492 else if (local_got_refcounts != NULL)
4494 if (local_got_refcounts[r_symndx] > 0)
4495 local_got_refcounts[r_symndx]--;
4501 case R_PPC_REL14_BRTAKEN:
4502 case R_PPC_REL14_BRNTAKEN:
4504 if (h == NULL || h == htab->elf.hgot)
4511 case R_PPC_ADDR16_LO:
4512 case R_PPC_ADDR16_HI:
4513 case R_PPC_ADDR16_HA:
4515 case R_PPC_ADDR14_BRTAKEN:
4516 case R_PPC_ADDR14_BRNTAKEN:
4523 case R_PPC_PLTREL24:
4524 case R_PPC_PLTREL32:
4525 case R_PPC_PLT16_LO:
4526 case R_PPC_PLT16_HI:
4527 case R_PPC_PLT16_HA:
4531 struct plt_entry *ent;
4533 if (r_type == R_PPC_PLTREL24 && info->shared)
4534 addend = rel->r_addend;
4535 ent = find_plt_ent (&h->plt.plist, got2, addend);
4536 if (ent != NULL && ent->plt.refcount > 0)
4537 ent->plt.refcount -= 1;
4548 /* Set plt output section type, htab->tls_get_addr, and call the
4549 generic ELF tls_setup function. */
4552 ppc_elf_tls_setup (bfd *obfd,
4553 struct bfd_link_info *info,
4554 int no_tls_get_addr_opt)
4556 struct ppc_elf_link_hash_table *htab;
4558 htab = ppc_elf_hash_table (info);
4559 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4560 FALSE, FALSE, TRUE);
4561 if (!no_tls_get_addr_opt)
4563 struct elf_link_hash_entry *opt, *tga;
4564 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
4565 FALSE, FALSE, TRUE);
4567 && (opt->root.type == bfd_link_hash_defined
4568 || opt->root.type == bfd_link_hash_defweak))
4570 /* If glibc supports an optimized __tls_get_addr call stub,
4571 signalled by the presence of __tls_get_addr_opt, and we'll
4572 be calling __tls_get_addr via a plt call stub, then
4573 make __tls_get_addr point to __tls_get_addr_opt. */
4574 tga = htab->tls_get_addr;
4575 if (htab->elf.dynamic_sections_created
4577 && (tga->type == STT_FUNC
4579 && !(SYMBOL_CALLS_LOCAL (info, tga)
4580 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
4581 && tga->root.type == bfd_link_hash_undefweak)))
4583 struct plt_entry *ent;
4584 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
4585 if (ent->plt.refcount > 0)
4589 tga->root.type = bfd_link_hash_indirect;
4590 tga->root.u.i.link = &opt->root;
4591 ppc_elf_copy_indirect_symbol (info, opt, tga);
4592 if (opt->dynindx != -1)
4594 /* Use __tls_get_addr_opt in dynamic relocations. */
4596 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4598 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
4601 htab->tls_get_addr = opt;
4606 no_tls_get_addr_opt = TRUE;
4608 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
4609 if (htab->plt_type == PLT_NEW
4610 && htab->plt != NULL
4611 && htab->plt->output_section != NULL)
4613 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4614 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4617 return _bfd_elf_tls_setup (obfd, info);
4620 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4624 branch_reloc_hash_match (const bfd *ibfd,
4625 const Elf_Internal_Rela *rel,
4626 const struct elf_link_hash_entry *hash)
4628 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4629 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4630 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4632 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
4634 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4635 struct elf_link_hash_entry *h;
4637 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4638 while (h->root.type == bfd_link_hash_indirect
4639 || h->root.type == bfd_link_hash_warning)
4640 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4647 /* Run through all the TLS relocs looking for optimization
4651 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4652 struct bfd_link_info *info)
4656 struct ppc_elf_link_hash_table *htab;
4659 if (info->relocatable || !info->executable)
4662 htab = ppc_elf_hash_table (info);
4663 /* Make two passes through the relocs. First time check that tls
4664 relocs involved in setting up a tls_get_addr call are indeed
4665 followed by such a call. If they are not, exclude them from
4666 the optimizations done on the second pass. */
4667 for (pass = 0; pass < 2; ++pass)
4668 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4670 Elf_Internal_Sym *locsyms = NULL;
4671 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4672 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
4674 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4675 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4677 Elf_Internal_Rela *relstart, *rel, *relend;
4679 /* Read the relocations. */
4680 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4682 if (relstart == NULL)
4685 relend = relstart + sec->reloc_count;
4686 for (rel = relstart; rel < relend; rel++)
4688 enum elf_ppc_reloc_type r_type;
4689 unsigned long r_symndx;
4690 struct elf_link_hash_entry *h = NULL;
4692 char tls_set, tls_clear;
4693 bfd_boolean is_local;
4694 int expecting_tls_get_addr;
4695 bfd_signed_vma *got_count;
4697 r_symndx = ELF32_R_SYM (rel->r_info);
4698 if (r_symndx >= symtab_hdr->sh_info)
4700 struct elf_link_hash_entry **sym_hashes;
4702 sym_hashes = elf_sym_hashes (ibfd);
4703 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4704 while (h->root.type == bfd_link_hash_indirect
4705 || h->root.type == bfd_link_hash_warning)
4706 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4709 expecting_tls_get_addr = 0;
4715 r_type = ELF32_R_TYPE (rel->r_info);
4718 case R_PPC_GOT_TLSLD16:
4719 case R_PPC_GOT_TLSLD16_LO:
4720 expecting_tls_get_addr = 1;
4723 case R_PPC_GOT_TLSLD16_HI:
4724 case R_PPC_GOT_TLSLD16_HA:
4725 /* These relocs should never be against a symbol
4726 defined in a shared lib. Leave them alone if
4727 that turns out to be the case. */
4736 case R_PPC_GOT_TLSGD16:
4737 case R_PPC_GOT_TLSGD16_LO:
4738 expecting_tls_get_addr = 1;
4741 case R_PPC_GOT_TLSGD16_HI:
4742 case R_PPC_GOT_TLSGD16_HA:
4748 tls_set = TLS_TLS | TLS_TPRELGD;
4752 case R_PPC_GOT_TPREL16:
4753 case R_PPC_GOT_TPREL16_LO:
4754 case R_PPC_GOT_TPREL16_HI:
4755 case R_PPC_GOT_TPREL16_HA:
4760 tls_clear = TLS_TPREL;
4768 expecting_tls_get_addr = 2;
4779 if (!expecting_tls_get_addr
4780 || (expecting_tls_get_addr == 1
4781 && !sec->has_tls_get_addr_call))
4784 if (rel + 1 < relend
4785 && branch_reloc_hash_match (ibfd, rel + 1,
4786 htab->tls_get_addr))
4789 /* Uh oh, we didn't find the expected call. We
4790 could just mark this symbol to exclude it
4791 from tls optimization but it's safer to skip
4792 the entire section. */
4793 sec->has_tls_reloc = 0;
4797 if (expecting_tls_get_addr)
4799 struct plt_entry *ent;
4803 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
4804 addend = rel[1].r_addend;
4805 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4807 if (ent != NULL && ent->plt.refcount > 0)
4808 ent->plt.refcount -= 1;
4810 if (expecting_tls_get_addr == 2)
4816 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4817 got_count = &h->got.refcount;
4821 Elf_Internal_Sym *sym;
4822 bfd_signed_vma *lgot_refs;
4823 struct plt_entry **local_plt;
4826 if (locsyms == NULL)
4828 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4829 if (locsyms == NULL)
4830 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4831 symtab_hdr->sh_info,
4832 0, NULL, NULL, NULL);
4833 if (locsyms == NULL)
4835 if (elf_section_data (sec)->relocs != relstart)
4840 sym = locsyms + r_symndx;
4841 lgot_refs = elf_local_got_refcounts (ibfd);
4842 if (lgot_refs == NULL)
4844 local_plt = (struct plt_entry **)
4845 (lgot_refs + symtab_hdr->sh_info);
4846 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
4847 tls_mask = &lgot_masks[r_symndx];
4848 got_count = &lgot_refs[r_symndx];
4853 /* We managed to get rid of a got entry. */
4858 *tls_mask |= tls_set;
4859 *tls_mask &= ~tls_clear;
4862 if (elf_section_data (sec)->relocs != relstart)
4867 && (symtab_hdr->contents != (unsigned char *) locsyms))
4869 if (!info->keep_memory)
4872 symtab_hdr->contents = (unsigned char *) locsyms;
4878 /* Return true if we have dynamic relocs that apply to read-only sections. */
4881 readonly_dynrelocs (struct elf_link_hash_entry *h)
4883 struct ppc_elf_dyn_relocs *p;
4885 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4887 asection *s = p->sec->output_section;
4890 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4891 == (SEC_READONLY | SEC_ALLOC)))
4897 /* Adjust a symbol defined by a dynamic object and referenced by a
4898 regular object. The current definition is in some section of the
4899 dynamic object, but we're not including those sections. We have to
4900 change the definition to something the rest of the link can
4904 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4905 struct elf_link_hash_entry *h)
4907 struct ppc_elf_link_hash_table *htab;
4911 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4912 h->root.root.string);
4915 /* Make sure we know what is going on here. */
4916 htab = ppc_elf_hash_table (info);
4917 BFD_ASSERT (htab->elf.dynobj != NULL
4919 || h->type == STT_GNU_IFUNC
4920 || h->u.weakdef != NULL
4923 && !h->def_regular)));
4925 /* Deal with function syms. */
4926 if (h->type == STT_FUNC
4927 || h->type == STT_GNU_IFUNC
4930 /* Clear procedure linkage table information for any symbol that
4931 won't need a .plt entry. */
4932 struct plt_entry *ent;
4933 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4934 if (ent->plt.refcount > 0)
4937 || (h->type != STT_GNU_IFUNC
4938 && (SYMBOL_CALLS_LOCAL (info, h)
4939 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4940 && h->root.type == bfd_link_hash_undefweak))))
4942 /* A PLT entry is not required/allowed when:
4944 1. We are not using ld.so; because then the PLT entry
4945 can't be set up, so we can't use one. In this case,
4946 ppc_elf_adjust_dynamic_symbol won't even be called.
4948 2. GC has rendered the entry unused.
4950 3. We know for certain that a call to this symbol
4951 will go to this object, or will remain undefined. */
4952 h->plt.plist = NULL;
4957 /* After adjust_dynamic_symbol, non_got_ref set in the
4958 non-shared case means that we have allocated space in
4959 .dynbss for the symbol and thus dyn_relocs for this
4960 symbol should be discarded.
4961 If we get here we know we are making a PLT entry for this
4962 symbol, and in an executable we'd normally resolve
4963 relocations against this symbol to the PLT entry. Allow
4964 dynamic relocs if the reference is weak, and the dynamic
4965 relocs will not cause text relocation. */
4966 if (!h->ref_regular_nonweak
4968 && h->type != STT_GNU_IFUNC
4969 && !htab->is_vxworks
4970 && !ppc_elf_hash_entry (h)->has_sda_refs
4971 && !readonly_dynrelocs (h))
4977 h->plt.plist = NULL;
4979 /* If this is a weak symbol, and there is a real definition, the
4980 processor independent code will have arranged for us to see the
4981 real definition first, and we can just use the same value. */
4982 if (h->u.weakdef != NULL)
4984 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4985 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4986 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4987 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4988 if (ELIMINATE_COPY_RELOCS)
4989 h->non_got_ref = h->u.weakdef->non_got_ref;
4993 /* This is a reference to a symbol defined by a dynamic object which
4994 is not a function. */
4996 /* If we are creating a shared library, we must presume that the
4997 only references to the symbol are via the global offset table.
4998 For such cases we need not do anything here; the relocations will
4999 be handled correctly by relocate_section. */
5003 /* If there are no references to this symbol that do not use the
5004 GOT, we don't need to generate a copy reloc. */
5005 if (!h->non_got_ref)
5008 /* If we didn't find any dynamic relocs in read-only sections, then
5009 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5010 We can't do this if there are any small data relocations. This
5011 doesn't work on VxWorks, where we can not have dynamic
5012 relocations (other than copy and jump slot relocations) in an
5014 if (ELIMINATE_COPY_RELOCS
5015 && !ppc_elf_hash_entry (h)->has_sda_refs
5016 && !htab->is_vxworks
5018 && !readonly_dynrelocs (h))
5026 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5027 h->root.root.string);
5031 /* We must allocate the symbol in our .dynbss section, which will
5032 become part of the .bss section of the executable. There will be
5033 an entry for this symbol in the .dynsym section. The dynamic
5034 object will contain position independent code, so all references
5035 from the dynamic object to this symbol will go through the global
5036 offset table. The dynamic linker will use the .dynsym entry to
5037 determine the address it must put in the global offset table, so
5038 both the dynamic object and the regular object will refer to the
5039 same memory location for the variable.
5041 Of course, if the symbol is referenced using SDAREL relocs, we
5042 must instead allocate it in .sbss. */
5044 if (ppc_elf_hash_entry (h)->has_sda_refs)
5048 BFD_ASSERT (s != NULL);
5050 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5051 copy the initial value out of the dynamic object and into the
5052 runtime process image. We need to remember the offset into the
5053 .rela.bss section we are going to use. */
5054 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5058 if (ppc_elf_hash_entry (h)->has_sda_refs)
5059 srel = htab->relsbss;
5061 srel = htab->relbss;
5062 BFD_ASSERT (srel != NULL);
5063 srel->size += sizeof (Elf32_External_Rela);
5067 return _bfd_elf_adjust_dynamic_copy (h, s);
5070 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5071 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5072 specifying the addend on the plt relocation. For -fpic code, the sym
5073 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5074 xxxxxxxx.got2.plt_pic32.<callee>. */
5077 add_stub_sym (struct plt_entry *ent,
5078 struct elf_link_hash_entry *h,
5079 struct bfd_link_info *info)
5081 struct elf_link_hash_entry *sh;
5082 size_t len1, len2, len3;
5085 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5088 stub = ".plt_pic32.";
5090 stub = ".plt_call32.";
5092 len1 = strlen (h->root.root.string);
5093 len2 = strlen (stub);
5096 len3 = strlen (ent->sec->name);
5097 name = bfd_malloc (len1 + len2 + len3 + 9);
5100 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5102 memcpy (name + 8, ent->sec->name, len3);
5103 memcpy (name + 8 + len3, stub, len2);
5104 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5105 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5108 if (sh->root.type == bfd_link_hash_new)
5110 sh->root.type = bfd_link_hash_defined;
5111 sh->root.u.def.section = htab->glink;
5112 sh->root.u.def.value = ent->glink_offset;
5113 sh->ref_regular = 1;
5114 sh->def_regular = 1;
5115 sh->ref_regular_nonweak = 1;
5116 sh->forced_local = 1;
5122 /* Allocate NEED contiguous space in .got, and return the offset.
5123 Handles allocation of the got header when crossing 32k. */
5126 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5129 unsigned int max_before_header;
5131 if (htab->plt_type == PLT_VXWORKS)
5133 where = htab->got->size;
5134 htab->got->size += need;
5138 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5139 if (need <= htab->got_gap)
5141 where = max_before_header - htab->got_gap;
5142 htab->got_gap -= need;
5146 if (htab->got->size + need > max_before_header
5147 && htab->got->size <= max_before_header)
5149 htab->got_gap = max_before_header - htab->got->size;
5150 htab->got->size = max_before_header + htab->got_header_size;
5152 where = htab->got->size;
5153 htab->got->size += need;
5159 /* Allocate space in associated reloc sections for dynamic relocs. */
5162 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5164 struct bfd_link_info *info = inf;
5165 struct ppc_elf_link_hash_entry *eh;
5166 struct ppc_elf_link_hash_table *htab;
5167 struct ppc_elf_dyn_relocs *p;
5169 if (h->root.type == bfd_link_hash_indirect)
5172 if (h->root.type == bfd_link_hash_warning)
5173 /* When warning symbols are created, they **replace** the "real"
5174 entry in the hash table, thus we never get to see the real
5175 symbol in a hash traversal. So look at it now. */
5176 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5178 htab = ppc_elf_hash_table (info);
5179 if (htab->elf.dynamic_sections_created
5180 || h->type == STT_GNU_IFUNC)
5182 struct plt_entry *ent;
5183 bfd_boolean doneone = FALSE;
5184 bfd_vma plt_offset = 0, glink_offset = 0;
5187 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5188 if (ent->plt.refcount > 0)
5190 /* Make sure this symbol is output as a dynamic symbol. */
5191 if (h->dynindx == -1
5194 && htab->elf.dynamic_sections_created)
5196 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5200 dyn = htab->elf.dynamic_sections_created;
5202 || h->type == STT_GNU_IFUNC
5203 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5205 asection *s = htab->plt;
5206 if (!dyn || h->dynindx == -1)
5209 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5213 plt_offset = s->size;
5216 ent->plt.offset = plt_offset;
5219 if (!doneone || info->shared)
5221 glink_offset = s->size;
5222 s->size += GLINK_ENTRY_SIZE;
5223 if (h == htab->tls_get_addr
5224 && !htab->no_tls_get_addr_opt)
5225 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5232 h->root.u.def.section = s;
5233 h->root.u.def.value = glink_offset;
5235 ent->glink_offset = glink_offset;
5237 if (htab->emit_stub_syms
5238 && !add_stub_sym (ent, h, info))
5245 /* If this is the first .plt entry, make room
5246 for the special first entry. */
5248 s->size += htab->plt_initial_entry_size;
5250 /* The PowerPC PLT is actually composed of two
5251 parts, the first part is 2 words (for a load
5252 and a jump), and then there is a remaining
5253 word available at the end. */
5254 plt_offset = (htab->plt_initial_entry_size
5255 + (htab->plt_slot_size
5257 - htab->plt_initial_entry_size)
5258 / htab->plt_entry_size)));
5260 /* If this symbol is not defined in a regular
5261 file, and we are not generating a shared
5262 library, then set the symbol to this location
5263 in the .plt. This is to avoid text
5264 relocations, and is required to make
5265 function pointers compare as equal between
5266 the normal executable and the shared library. */
5271 h->root.u.def.section = s;
5272 h->root.u.def.value = plt_offset;
5275 /* Make room for this entry. */
5276 s->size += htab->plt_entry_size;
5277 /* After the 8192nd entry, room for two entries
5279 if (htab->plt_type == PLT_OLD
5280 && (s->size - htab->plt_initial_entry_size)
5281 / htab->plt_entry_size
5282 > PLT_NUM_SINGLE_ENTRIES)
5283 s->size += htab->plt_entry_size;
5285 ent->plt.offset = plt_offset;
5288 /* We also need to make an entry in the .rela.plt section. */
5291 if (!htab->elf.dynamic_sections_created
5292 || h->dynindx == -1)
5293 htab->reliplt->size += sizeof (Elf32_External_Rela);
5296 htab->relplt->size += sizeof (Elf32_External_Rela);
5298 if (htab->plt_type == PLT_VXWORKS)
5300 /* Allocate space for the unloaded relocations. */
5302 && htab->elf.dynamic_sections_created)
5305 == (bfd_vma) htab->plt_initial_entry_size)
5307 htab->srelplt2->size
5308 += (sizeof (Elf32_External_Rela)
5309 * VXWORKS_PLTRESOLVE_RELOCS);
5312 htab->srelplt2->size
5313 += (sizeof (Elf32_External_Rela)
5314 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5317 /* Every PLT entry has an associated GOT entry in
5319 htab->sgotplt->size += 4;
5326 ent->plt.offset = (bfd_vma) -1;
5329 ent->plt.offset = (bfd_vma) -1;
5333 h->plt.plist = NULL;
5339 h->plt.plist = NULL;
5343 eh = (struct ppc_elf_link_hash_entry *) h;
5344 if (eh->elf.got.refcount > 0)
5349 /* Make sure this symbol is output as a dynamic symbol. */
5350 if (eh->elf.dynindx == -1
5351 && !eh->elf.forced_local
5352 && eh->elf.type != STT_GNU_IFUNC
5353 && htab->elf.dynamic_sections_created)
5355 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5360 if ((eh->tls_mask & TLS_TLS) != 0)
5362 if ((eh->tls_mask & TLS_LD) != 0)
5364 if (!eh->elf.def_dynamic)
5365 /* We'll just use htab->tlsld_got.offset. This should
5366 always be the case. It's a little odd if we have
5367 a local dynamic reloc against a non-local symbol. */
5368 htab->tlsld_got.refcount += 1;
5372 if ((eh->tls_mask & TLS_GD) != 0)
5374 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5376 if ((eh->tls_mask & TLS_DTPREL) != 0)
5382 eh->elf.got.offset = (bfd_vma) -1;
5385 eh->elf.got.offset = allocate_got (htab, need);
5386 dyn = htab->elf.dynamic_sections_created;
5388 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5389 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5390 || eh->elf.root.type != bfd_link_hash_undefweak))
5392 asection *rsec = htab->relgot;
5393 /* All the entries we allocated need relocs.
5394 Except LD only needs one. */
5395 if ((eh->tls_mask & TLS_LD) != 0
5396 && eh->elf.def_dynamic)
5398 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5403 eh->elf.got.offset = (bfd_vma) -1;
5405 if (eh->dyn_relocs == NULL
5406 || !htab->elf.dynamic_sections_created)
5409 /* In the shared -Bsymbolic case, discard space allocated for
5410 dynamic pc-relative relocs against symbols which turn out to be
5411 defined in regular objects. For the normal shared case, discard
5412 space for relocs that have become local due to symbol visibility
5417 /* Relocs that use pc_count are those that appear on a call insn,
5418 or certain REL relocs (see must_be_dyn_reloc) that can be
5419 generated via assembly. We want calls to protected symbols to
5420 resolve directly to the function rather than going via the plt.
5421 If people want function pointer comparisons to work as expected
5422 then they should avoid writing weird assembly. */
5423 if (SYMBOL_CALLS_LOCAL (info, h))
5425 struct ppc_elf_dyn_relocs **pp;
5427 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5429 p->count -= p->pc_count;
5438 if (htab->is_vxworks)
5440 struct ppc_elf_dyn_relocs **pp;
5442 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5444 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5451 /* Discard relocs on undefined symbols that must be local. */
5452 if (eh->dyn_relocs != NULL
5453 && h->root.type == bfd_link_hash_undefined
5454 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5455 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5456 eh->dyn_relocs = NULL;
5458 /* Also discard relocs on undefined weak syms with non-default
5460 if (eh->dyn_relocs != NULL
5461 && h->root.type == bfd_link_hash_undefweak)
5463 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5464 eh->dyn_relocs = NULL;
5466 /* Make sure undefined weak symbols are output as a dynamic
5468 else if (h->dynindx == -1
5472 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5477 else if (ELIMINATE_COPY_RELOCS)
5479 /* For the non-shared case, discard space for relocs against
5480 symbols which turn out to need copy relocs or are not
5486 /* Make sure this symbol is output as a dynamic symbol.
5487 Undefined weak syms won't yet be marked as dynamic. */
5488 if (h->dynindx == -1
5489 && !h->forced_local)
5491 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5495 /* If that succeeded, we know we'll be keeping all the
5497 if (h->dynindx != -1)
5501 eh->dyn_relocs = NULL;
5506 /* Finally, allocate space. */
5507 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5509 asection *sreloc = elf_section_data (p->sec)->sreloc;
5510 if (!htab->elf.dynamic_sections_created)
5511 sreloc = htab->reliplt;
5512 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5518 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5519 read-only sections. */
5522 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5524 if (h->root.type == bfd_link_hash_indirect)
5527 if (h->root.type == bfd_link_hash_warning)
5528 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5530 if (readonly_dynrelocs (h))
5532 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5534 /* Not an error, just cut short the traversal. */
5540 /* Set the sizes of the dynamic sections. */
5543 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5544 struct bfd_link_info *info)
5546 struct ppc_elf_link_hash_table *htab;
5552 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5555 htab = ppc_elf_hash_table (info);
5556 BFD_ASSERT (htab->elf.dynobj != NULL);
5558 if (elf_hash_table (info)->dynamic_sections_created)
5560 /* Set the contents of the .interp section to the interpreter. */
5561 if (info->executable)
5563 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5564 BFD_ASSERT (s != NULL);
5565 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5566 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5570 if (htab->plt_type == PLT_OLD)
5571 htab->got_header_size = 16;
5572 else if (htab->plt_type == PLT_NEW)
5573 htab->got_header_size = 12;
5575 /* Set up .got offsets for local syms, and space for local dynamic
5577 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5579 bfd_signed_vma *local_got;
5580 bfd_signed_vma *end_local_got;
5581 struct plt_entry **local_plt;
5582 struct plt_entry **end_local_plt;
5584 bfd_size_type locsymcount;
5585 Elf_Internal_Shdr *symtab_hdr;
5587 if (!is_ppc_elf (ibfd))
5590 for (s = ibfd->sections; s != NULL; s = s->next)
5592 struct ppc_elf_dyn_relocs *p;
5594 for (p = ((struct ppc_elf_dyn_relocs *)
5595 elf_section_data (s)->local_dynrel);
5599 if (!bfd_is_abs_section (p->sec)
5600 && bfd_is_abs_section (p->sec->output_section))
5602 /* Input section has been discarded, either because
5603 it is a copy of a linkonce section or due to
5604 linker script /DISCARD/, so we'll be discarding
5607 else if (htab->is_vxworks
5608 && strcmp (p->sec->output_section->name,
5611 /* Relocations in vxworks .tls_vars sections are
5612 handled specially by the loader. */
5614 else if (p->count != 0)
5616 asection *sreloc = elf_section_data (p->sec)->sreloc;
5617 if (!htab->elf.dynamic_sections_created)
5618 sreloc = htab->reliplt;
5619 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5620 if ((p->sec->output_section->flags
5621 & (SEC_READONLY | SEC_ALLOC))
5622 == (SEC_READONLY | SEC_ALLOC))
5623 info->flags |= DF_TEXTREL;
5628 local_got = elf_local_got_refcounts (ibfd);
5632 symtab_hdr = &elf_symtab_hdr (ibfd);
5633 locsymcount = symtab_hdr->sh_info;
5634 end_local_got = local_got + locsymcount;
5635 local_plt = (struct plt_entry **) end_local_got;
5636 end_local_plt = local_plt + locsymcount;
5637 lgot_masks = (char *) end_local_plt;
5639 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5642 unsigned int need = 0;
5643 if ((*lgot_masks & TLS_TLS) != 0)
5645 if ((*lgot_masks & TLS_GD) != 0)
5647 if ((*lgot_masks & TLS_LD) != 0)
5648 htab->tlsld_got.refcount += 1;
5649 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5651 if ((*lgot_masks & TLS_DTPREL) != 0)
5657 *local_got = (bfd_vma) -1;
5660 *local_got = allocate_got (htab, need);
5662 htab->relgot->size += (need
5663 * (sizeof (Elf32_External_Rela) / 4));
5667 *local_got = (bfd_vma) -1;
5669 if (htab->is_vxworks)
5672 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5673 for (; local_plt < end_local_plt; ++local_plt)
5675 struct plt_entry *ent;
5676 bfd_boolean doneone = FALSE;
5677 bfd_vma plt_offset = 0, glink_offset = 0;
5679 for (ent = *local_plt; ent != NULL; ent = ent->next)
5680 if (ent->plt.refcount > 0)
5686 plt_offset = s->size;
5689 ent->plt.offset = plt_offset;
5692 if (!doneone || info->shared)
5694 glink_offset = s->size;
5695 s->size += GLINK_ENTRY_SIZE;
5697 ent->glink_offset = glink_offset;
5701 htab->reliplt->size += sizeof (Elf32_External_Rela);
5706 ent->plt.offset = (bfd_vma) -1;
5710 /* Allocate space for global sym dynamic relocs. */
5711 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5713 if (htab->tlsld_got.refcount > 0)
5715 htab->tlsld_got.offset = allocate_got (htab, 8);
5717 htab->relgot->size += sizeof (Elf32_External_Rela);
5720 htab->tlsld_got.offset = (bfd_vma) -1;
5722 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5724 unsigned int g_o_t = 32768;
5726 /* If we haven't allocated the header, do so now. When we get here,
5727 for old plt/got the got size will be 0 to 32764 (not allocated),
5728 or 32780 to 65536 (header allocated). For new plt/got, the
5729 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5730 if (htab->got->size <= 32768)
5732 g_o_t = htab->got->size;
5733 if (htab->plt_type == PLT_OLD)
5735 htab->got->size += htab->got_header_size;
5738 htab->elf.hgot->root.u.def.value = g_o_t;
5742 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
5744 && !(sda->root.type == bfd_link_hash_defined
5745 || sda->root.type == bfd_link_hash_defweak))
5747 sda->root.type = bfd_link_hash_defined;
5748 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
5749 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
5753 if (htab->glink != NULL
5754 && htab->glink->size != 0
5755 && htab->elf.dynamic_sections_created)
5757 htab->glink_pltresolve = htab->glink->size;
5758 /* Space for the branch table. */
5759 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5760 /* Pad out to align the start of PLTresolve. */
5761 htab->glink->size += -htab->glink->size & 15;
5762 htab->glink->size += GLINK_PLTRESOLVE;
5764 if (htab->emit_stub_syms)
5766 struct elf_link_hash_entry *sh;
5767 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5768 TRUE, FALSE, FALSE);
5771 if (sh->root.type == bfd_link_hash_new)
5773 sh->root.type = bfd_link_hash_defined;
5774 sh->root.u.def.section = htab->glink;
5775 sh->root.u.def.value = htab->glink_pltresolve;
5776 sh->ref_regular = 1;
5777 sh->def_regular = 1;
5778 sh->ref_regular_nonweak = 1;
5779 sh->forced_local = 1;
5782 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5783 TRUE, FALSE, FALSE);
5786 if (sh->root.type == bfd_link_hash_new)
5788 sh->root.type = bfd_link_hash_defined;
5789 sh->root.u.def.section = htab->glink;
5790 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5791 sh->ref_regular = 1;
5792 sh->def_regular = 1;
5793 sh->ref_regular_nonweak = 1;
5794 sh->forced_local = 1;
5800 /* We've now determined the sizes of the various dynamic sections.
5801 Allocate memory for them. */
5803 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5805 bfd_boolean strip_section = TRUE;
5807 if ((s->flags & SEC_LINKER_CREATED) == 0)
5813 /* We'd like to strip these sections if they aren't needed, but if
5814 we've exported dynamic symbols from them we must leave them.
5815 It's too late to tell BFD to get rid of the symbols. */
5816 if (htab->elf.hplt != NULL)
5817 strip_section = FALSE;
5818 /* Strip this section if we don't need it; see the
5821 else if (s == htab->iplt
5823 || s == htab->sgotplt
5825 || s == htab->dynbss
5826 || s == htab->dynsbss
5827 || s == htab->sdata[0].section
5828 || s == htab->sdata[1].section)
5830 /* Strip these too. */
5832 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5836 /* Remember whether there are any relocation sections. */
5839 /* We use the reloc_count field as a counter if we need
5840 to copy relocs into the output file. */
5846 /* It's not one of our sections, so don't allocate space. */
5850 if (s->size == 0 && strip_section)
5852 /* If we don't need this section, strip it from the
5853 output file. This is mostly to handle .rela.bss and
5854 .rela.plt. We must create both sections in
5855 create_dynamic_sections, because they must be created
5856 before the linker maps input sections to output
5857 sections. The linker does that before
5858 adjust_dynamic_symbol is called, and it is that
5859 function which decides whether anything needs to go
5860 into these sections. */
5861 s->flags |= SEC_EXCLUDE;
5865 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5868 /* Allocate memory for the section contents. */
5869 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5870 if (s->contents == NULL)
5874 if (htab->elf.dynamic_sections_created)
5876 /* Add some entries to the .dynamic section. We fill in the
5877 values later, in ppc_elf_finish_dynamic_sections, but we
5878 must add the entries now so that we get the correct size for
5879 the .dynamic section. The DT_DEBUG entry is filled in by the
5880 dynamic linker and used by the debugger. */
5881 #define add_dynamic_entry(TAG, VAL) \
5882 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5884 if (info->executable)
5886 if (!add_dynamic_entry (DT_DEBUG, 0))
5890 if (htab->plt != NULL && htab->plt->size != 0)
5892 if (!add_dynamic_entry (DT_PLTGOT, 0)
5893 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5894 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5895 || !add_dynamic_entry (DT_JMPREL, 0))
5899 if (htab->glink != NULL && htab->glink->size != 0)
5901 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5903 if (!htab->no_tls_get_addr_opt
5904 && htab->tls_get_addr != NULL
5905 && htab->tls_get_addr->plt.plist != NULL
5906 && !add_dynamic_entry (DT_PPC_TLSOPT, 0))
5912 if (!add_dynamic_entry (DT_RELA, 0)
5913 || !add_dynamic_entry (DT_RELASZ, 0)
5914 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5918 /* If any dynamic relocs apply to a read-only section, then we
5919 need a DT_TEXTREL entry. */
5920 if ((info->flags & DF_TEXTREL) == 0)
5921 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5924 if ((info->flags & DF_TEXTREL) != 0)
5926 if (!add_dynamic_entry (DT_TEXTREL, 0))
5929 if (htab->is_vxworks
5930 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5933 #undef add_dynamic_entry
5938 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5941 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5943 if (h->plt.plist != NULL
5945 && (!h->pointer_equality_needed
5946 || !h->ref_regular_nonweak))
5949 return _bfd_elf_hash_symbol (h);
5952 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5954 /* Relaxation trampolines. r12 is available for clobbering (r11, is
5955 used for some functions that are allowed to break the ABI). */
5956 static const int shared_stub_entry[] =
5958 0x7c0802a6, /* mflr 0 */
5959 0x429f0005, /* bcl 20, 31, .Lxxx */
5960 0x7d8802a6, /* mflr 12 */
5961 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
5962 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
5963 0x7c0803a6, /* mtlr 0 */
5964 0x7d8903a6, /* mtctr 12 */
5965 0x4e800420, /* bctr */
5968 static const int stub_entry[] =
5970 0x3d800000, /* lis 12,xxx@ha */
5971 0x398c0000, /* addi 12,12,xxx@l */
5972 0x7d8903a6, /* mtctr 12 */
5973 0x4e800420, /* bctr */
5977 ppc_elf_relax_section (bfd *abfd,
5979 struct bfd_link_info *link_info,
5984 struct one_fixup *next;
5986 /* Final link, can use the symbol offset. For a
5987 relocatable link we use the symbol's index. */
5992 Elf_Internal_Shdr *symtab_hdr;
5993 bfd_byte *contents = NULL;
5994 Elf_Internal_Sym *isymbuf = NULL;
5995 Elf_Internal_Rela *internal_relocs = NULL;
5996 Elf_Internal_Rela *irel, *irelend;
5997 struct one_fixup *fixups = NULL;
5998 unsigned changes = 0;
5999 struct ppc_elf_link_hash_table *htab;
6000 bfd_size_type trampoff;
6005 /* Nothing to do if there are no relocations, and no need to do
6006 anything with non-alloc or non-code sections. */
6007 if ((isec->flags & SEC_ALLOC) == 0
6008 || (isec->flags & SEC_CODE) == 0
6009 || (isec->flags & SEC_RELOC) == 0
6010 || isec->reloc_count == 0)
6013 /* We cannot represent the required PIC relocs in the output, so don't
6014 do anything. The linker doesn't support mixing -shared and -r
6016 if (link_info->relocatable && link_info->shared)
6019 trampoff = (isec->size + 3) & (bfd_vma) -4;
6020 /* Space for a branch around any trampolines. */
6023 symtab_hdr = &elf_symtab_hdr (abfd);
6025 /* Get a copy of the native relocations. */
6026 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6027 link_info->keep_memory);
6028 if (internal_relocs == NULL)
6031 htab = ppc_elf_hash_table (link_info);
6032 got2 = bfd_get_section_by_name (abfd, ".got2");
6034 irelend = internal_relocs + isec->reloc_count;
6035 for (irel = internal_relocs; irel < irelend; irel++)
6037 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6040 struct one_fixup *f;
6041 size_t insn_offset = 0;
6042 bfd_vma max_branch_offset, val;
6045 struct elf_link_hash_entry *h;
6046 struct plt_entry **plist;
6047 unsigned char sym_type;
6052 case R_PPC_LOCAL24PC:
6053 case R_PPC_PLTREL24:
6054 max_branch_offset = 1 << 25;
6058 case R_PPC_REL14_BRTAKEN:
6059 case R_PPC_REL14_BRNTAKEN:
6060 max_branch_offset = 1 << 15;
6067 /* Get the value of the symbol referred to by the reloc. */
6069 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6071 /* A local symbol. */
6072 Elf_Internal_Sym *isym;
6074 /* Read this BFD's local symbols. */
6075 if (isymbuf == NULL)
6077 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6078 if (isymbuf == NULL)
6079 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6080 symtab_hdr->sh_info, 0,
6085 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6086 if (isym->st_shndx == SHN_UNDEF)
6087 tsec = bfd_und_section_ptr;
6088 else if (isym->st_shndx == SHN_ABS)
6089 tsec = bfd_abs_section_ptr;
6090 else if (isym->st_shndx == SHN_COMMON)
6091 tsec = bfd_com_section_ptr;
6093 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6095 toff = isym->st_value;
6096 sym_type = ELF_ST_TYPE (isym->st_info);
6100 /* Global symbol handling. */
6103 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6104 h = elf_sym_hashes (abfd)[indx];
6106 while (h->root.type == bfd_link_hash_indirect
6107 || h->root.type == bfd_link_hash_warning)
6108 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6110 if (h->root.type == bfd_link_hash_defined
6111 || h->root.type == bfd_link_hash_defweak)
6113 tsec = h->root.u.def.section;
6114 toff = h->root.u.def.value;
6116 else if (h->root.type == bfd_link_hash_undefined
6117 || h->root.type == bfd_link_hash_undefweak)
6119 tsec = bfd_und_section_ptr;
6120 toff = link_info->relocatable ? indx : 0;
6128 /* The condition here under which we call find_plt_ent must
6129 match that in relocate_section. If we call find_plt_ent here
6130 but not in relocate_section, or vice versa, then the branch
6131 destination used here may be incorrect. */
6135 /* We know is_branch_reloc (r_type) is true. */
6136 if (h->type == STT_GNU_IFUNC
6137 || r_type == R_PPC_PLTREL24)
6138 plist = &h->plt.plist;
6140 else if (sym_type == STT_GNU_IFUNC
6141 && elf_local_got_offsets (abfd) != NULL)
6143 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6144 struct plt_entry **local_plt = (struct plt_entry **)
6145 (local_got_offsets + symtab_hdr->sh_info);
6146 plist = local_plt + ELF32_R_SYM (irel->r_info);
6151 struct plt_entry *ent;
6153 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6154 addend = irel->r_addend;
6155 ent = find_plt_ent (plist, got2, addend);
6158 if (htab->plt_type == PLT_NEW
6160 || !htab->elf.dynamic_sections_created
6161 || h->dynindx == -1)
6164 toff = ent->glink_offset;
6169 toff = ent->plt.offset;
6174 /* If the branch and target are in the same section, you have
6175 no hope of adding stubs. We'll error out later should the
6180 /* There probably isn't any reason to handle symbols in
6181 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6182 attribute for a code section, and we are only looking at
6183 branches. However, implement it correctly here as a
6184 reference for other target relax_section functions. */
6185 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6187 /* At this stage in linking, no SEC_MERGE symbol has been
6188 adjusted, so all references to such symbols need to be
6189 passed through _bfd_merged_section_offset. (Later, in
6190 relocate_section, all SEC_MERGE symbols *except* for
6191 section symbols have been adjusted.)
6193 gas may reduce relocations against symbols in SEC_MERGE
6194 sections to a relocation against the section symbol when
6195 the original addend was zero. When the reloc is against
6196 a section symbol we should include the addend in the
6197 offset passed to _bfd_merged_section_offset, since the
6198 location of interest is the original symbol. On the
6199 other hand, an access to "sym+addend" where "sym" is not
6200 a section symbol should not include the addend; Such an
6201 access is presumed to be an offset from "sym"; The
6202 location of interest is just "sym". */
6203 if (sym_type == STT_SECTION)
6204 toff += irel->r_addend;
6206 toff = _bfd_merged_section_offset (abfd, &tsec,
6207 elf_section_data (tsec)->sec_info,
6210 if (sym_type != STT_SECTION)
6211 toff += irel->r_addend;
6213 /* PLTREL24 addends are special. */
6214 else if (r_type != R_PPC_PLTREL24)
6215 toff += irel->r_addend;
6217 /* Attempted -shared link of non-pic code loses. */
6218 if (tsec->output_section == NULL)
6221 roff = irel->r_offset;
6223 /* If the branch is in range, no need to do anything. */
6224 if (tsec != bfd_und_section_ptr
6225 && (!link_info->relocatable
6226 /* A relocatable link may have sections moved during
6227 final link, so do not presume they remain in range. */
6228 || tsec->output_section == isec->output_section))
6230 bfd_vma symaddr, reladdr;
6232 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6233 reladdr = isec->output_section->vma + isec->output_offset + roff;
6234 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6238 /* Look for an existing fixup to this address. */
6239 for (f = fixups; f ; f = f->next)
6240 if (f->tsec == tsec && f->toff == toff)
6246 unsigned long stub_rtype;
6248 val = trampoff - roff;
6249 if (val >= max_branch_offset)
6250 /* Oh dear, we can't reach a trampoline. Don't try to add
6251 one. We'll report an error later. */
6254 if (link_info->shared)
6256 size = 4 * ARRAY_SIZE (shared_stub_entry);
6261 size = 4 * ARRAY_SIZE (stub_entry);
6264 stub_rtype = R_PPC_RELAX;
6265 if (tsec == htab->plt
6266 || tsec == htab->glink)
6268 stub_rtype = R_PPC_RELAX_PLT;
6269 if (r_type == R_PPC_PLTREL24)
6270 stub_rtype = R_PPC_RELAX_PLTREL24;
6273 /* Hijack the old relocation. Since we need two
6274 relocations for this use a "composite" reloc. */
6275 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6277 irel->r_offset = trampoff + insn_offset;
6278 if (r_type == R_PPC_PLTREL24
6279 && stub_rtype != R_PPC_RELAX_PLTREL24)
6282 /* Record the fixup so we don't do it again this section. */
6283 f = bfd_malloc (sizeof (*f));
6287 f->trampoff = trampoff;
6295 val = f->trampoff - roff;
6296 if (val >= max_branch_offset)
6299 /* Nop out the reloc, since we're finalizing things here. */
6300 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6303 /* Get the section contents. */
6304 if (contents == NULL)
6306 /* Get cached copy if it exists. */
6307 if (elf_section_data (isec)->this_hdr.contents != NULL)
6308 contents = elf_section_data (isec)->this_hdr.contents;
6311 /* Go get them off disk. */
6312 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6317 /* Fix up the existing branch to hit the trampoline. */
6318 hit_addr = contents + roff;
6322 case R_PPC_LOCAL24PC:
6323 case R_PPC_PLTREL24:
6324 t0 = bfd_get_32 (abfd, hit_addr);
6326 t0 |= val & 0x3fffffc;
6327 bfd_put_32 (abfd, t0, hit_addr);
6331 case R_PPC_REL14_BRTAKEN:
6332 case R_PPC_REL14_BRNTAKEN:
6333 t0 = bfd_get_32 (abfd, hit_addr);
6336 bfd_put_32 (abfd, t0, hit_addr);
6341 /* Write out the trampolines. */
6351 struct one_fixup *f = fixups;
6352 fixups = fixups->next;
6357 contents = bfd_realloc_or_free (contents, trampoff);
6358 if (contents == NULL)
6361 isec->size = (isec->size + 3) & (bfd_vma) -4;
6362 /* Branch around the trampolines. */
6363 val = B + trampoff - isec->size;
6364 dest = contents + isec->size;
6365 isec->size = trampoff;
6366 bfd_put_32 (abfd, val, dest);
6369 if (link_info->shared)
6371 stub = shared_stub_entry;
6372 size = ARRAY_SIZE (shared_stub_entry);
6377 size = ARRAY_SIZE (stub_entry);
6381 while (dest < contents + trampoff)
6383 bfd_put_32 (abfd, stub[i], dest);
6389 BFD_ASSERT (i == 0);
6393 && symtab_hdr->contents != (unsigned char *) isymbuf)
6395 if (! link_info->keep_memory)
6399 /* Cache the symbols for elf_link_input_bfd. */
6400 symtab_hdr->contents = (unsigned char *) isymbuf;
6404 if (contents != NULL
6405 && elf_section_data (isec)->this_hdr.contents != contents)
6407 if (!changes && !link_info->keep_memory)
6411 /* Cache the section contents for elf_link_input_bfd. */
6412 elf_section_data (isec)->this_hdr.contents = contents;
6418 /* Append sufficient NOP relocs so we can write out relocation
6419 information for the trampolines. */
6420 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6421 * sizeof (*new_relocs));
6426 memcpy (new_relocs, internal_relocs,
6427 isec->reloc_count * sizeof (*new_relocs));
6428 for (ix = changes; ix--;)
6430 irel = new_relocs + ix + isec->reloc_count;
6432 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6434 if (internal_relocs != elf_section_data (isec)->relocs)
6435 free (internal_relocs);
6436 elf_section_data (isec)->relocs = new_relocs;
6437 isec->reloc_count += changes;
6438 elf_section_data (isec)->rel_hdr.sh_size
6439 += changes * elf_section_data (isec)->rel_hdr.sh_entsize;
6441 else if (elf_section_data (isec)->relocs != internal_relocs)
6442 free (internal_relocs);
6444 *again = changes != 0;
6445 if (!*again && link_info->relocatable)
6447 /* Convert the internal relax relocs to external form. */
6448 for (irel = internal_relocs; irel < irelend; irel++)
6449 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
6451 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6453 /* Rewrite the reloc and convert one of the trailing nop
6454 relocs to describe this relocation. */
6455 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6456 /* The relocs are at the bottom 2 bytes */
6457 irel[0].r_offset += 2;
6458 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6459 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6460 irel[1].r_offset += 4;
6461 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6469 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6471 if (contents != NULL
6472 && elf_section_data (isec)->this_hdr.contents != contents)
6474 if (internal_relocs != NULL
6475 && elf_section_data (isec)->relocs != internal_relocs)
6476 free (internal_relocs);
6480 /* What to do when ld finds relocations against symbols defined in
6481 discarded sections. */
6484 ppc_elf_action_discarded (asection *sec)
6486 if (strcmp (".fixup", sec->name) == 0)
6489 if (strcmp (".got2", sec->name) == 0)
6492 return _bfd_elf_default_action_discarded (sec);
6495 /* Fill in the address for a pointer generated in a linker section. */
6498 elf_finish_pointer_linker_section (bfd *input_bfd,
6499 elf_linker_section_t *lsect,
6500 struct elf_link_hash_entry *h,
6502 const Elf_Internal_Rela *rel)
6504 elf_linker_section_pointers_t *linker_section_ptr;
6506 BFD_ASSERT (lsect != NULL);
6510 /* Handle global symbol. */
6511 struct ppc_elf_link_hash_entry *eh;
6513 eh = (struct ppc_elf_link_hash_entry *) h;
6514 BFD_ASSERT (eh->elf.def_regular);
6515 linker_section_ptr = eh->linker_section_pointer;
6519 /* Handle local symbol. */
6520 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6522 BFD_ASSERT (is_ppc_elf (input_bfd));
6523 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6524 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6527 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6530 BFD_ASSERT (linker_section_ptr != NULL);
6532 /* Offset will always be a multiple of four, so use the bottom bit
6533 as a "written" flag. */
6534 if ((linker_section_ptr->offset & 1) == 0)
6536 bfd_put_32 (lsect->section->owner,
6537 relocation + linker_section_ptr->addend,
6538 lsect->section->contents + linker_section_ptr->offset);
6539 linker_section_ptr->offset += 1;
6542 relocation = (lsect->section->output_section->vma
6543 + lsect->section->output_offset
6544 + linker_section_ptr->offset - 1
6545 - SYM_VAL (lsect->sym));
6549 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6550 lsect->name, (long) relocation, (long) relocation);
6556 #define PPC_LO(v) ((v) & 0xffff)
6557 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6558 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6561 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
6562 struct bfd_link_info *info)
6564 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6565 bfd *output_bfd = info->output_bfd;
6568 plt = ((ent->plt.offset & ~1)
6569 + plt_sec->output_section->vma
6570 + plt_sec->output_offset);
6576 if (ent->addend >= 32768)
6578 + ent->sec->output_section->vma
6579 + ent->sec->output_offset);
6580 else if (htab->elf.hgot != NULL)
6581 got = SYM_VAL (htab->elf.hgot);
6585 if (plt + 0x8000 < 0x10000)
6587 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6589 bfd_put_32 (output_bfd, MTCTR_11, p);
6591 bfd_put_32 (output_bfd, BCTR, p);
6593 bfd_put_32 (output_bfd, NOP, p);
6598 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6600 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6602 bfd_put_32 (output_bfd, MTCTR_11, p);
6604 bfd_put_32 (output_bfd, BCTR, p);
6610 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6612 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6614 bfd_put_32 (output_bfd, MTCTR_11, p);
6616 bfd_put_32 (output_bfd, BCTR, p);
6621 /* Return true if symbol is defined statically. */
6624 is_static_defined (struct elf_link_hash_entry *h)
6626 return ((h->root.type == bfd_link_hash_defined
6627 || h->root.type == bfd_link_hash_defweak)
6628 && h->root.u.def.section != NULL
6629 && h->root.u.def.section->output_section != NULL);
6632 /* If INSN is an opcode that may be used with an @tls operand, return
6633 the transformed insn for TLS optimisation, otherwise return 0. If
6634 REG is non-zero only match an insn with RB or RA equal to REG. */
6637 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
6641 if ((insn & (0x3f << 26)) != 31 << 26)
6644 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
6645 rtra = insn & ((1 << 26) - (1 << 16));
6646 else if (((insn >> 16) & 0x1f) == reg)
6647 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
6651 if ((insn & (0x3ff << 1)) == 266 << 1)
6654 else if ((insn & (0x1f << 1)) == 23 << 1
6655 && ((insn & (0x1f << 6)) < 14 << 6
6656 || ((insn & (0x1f << 6)) >= 16 << 6
6657 && (insn & (0x1f << 6)) < 24 << 6)))
6658 /* load and store indexed -> dform. */
6659 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
6660 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
6661 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6662 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
6663 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
6665 insn = (58 << 26) | 2;
6672 /* The RELOCATE_SECTION function is called by the ELF backend linker
6673 to handle the relocations for a section.
6675 The relocs are always passed as Rela structures; if the section
6676 actually uses Rel structures, the r_addend field will always be
6679 This function is responsible for adjust the section contents as
6680 necessary, and (if using Rela relocs and generating a
6681 relocatable output file) adjusting the reloc addend as
6684 This function does not have to worry about setting the reloc
6685 address or the reloc symbol index.
6687 LOCAL_SYMS is a pointer to the swapped in local symbols.
6689 LOCAL_SECTIONS is an array giving the section in the input file
6690 corresponding to the st_shndx field of each local symbol.
6692 The global hash table entry for the global symbols can be found
6693 via elf_sym_hashes (input_bfd).
6695 When generating relocatable output, this function must handle
6696 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6697 going to be the section symbol corresponding to the output
6698 section, which means that the addend must be adjusted
6702 ppc_elf_relocate_section (bfd *output_bfd,
6703 struct bfd_link_info *info,
6705 asection *input_section,
6707 Elf_Internal_Rela *relocs,
6708 Elf_Internal_Sym *local_syms,
6709 asection **local_sections)
6711 Elf_Internal_Shdr *symtab_hdr;
6712 struct elf_link_hash_entry **sym_hashes;
6713 struct ppc_elf_link_hash_table *htab;
6714 Elf_Internal_Rela *rel;
6715 Elf_Internal_Rela *relend;
6716 Elf_Internal_Rela outrel;
6717 asection *got2, *sreloc = NULL;
6718 bfd_vma *local_got_offsets;
6719 bfd_boolean ret = TRUE;
6720 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6721 bfd_boolean is_vxworks_tls;
6724 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6725 "%ld relocations%s",
6726 input_bfd, input_section,
6727 (long) input_section->reloc_count,
6728 (info->relocatable) ? " (relocatable)" : "");
6731 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6733 /* Initialize howto table if not already done. */
6734 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6735 ppc_elf_howto_init ();
6737 htab = ppc_elf_hash_table (info);
6738 local_got_offsets = elf_local_got_offsets (input_bfd);
6739 symtab_hdr = &elf_symtab_hdr (input_bfd);
6740 sym_hashes = elf_sym_hashes (input_bfd);
6741 /* We have to handle relocations in vxworks .tls_vars sections
6742 specially, because the dynamic loader is 'weird'. */
6743 is_vxworks_tls = (htab->is_vxworks && info->shared
6744 && !strcmp (input_section->output_section->name,
6747 relend = relocs + input_section->reloc_count;
6748 for (; rel < relend; rel++)
6750 enum elf_ppc_reloc_type r_type;
6752 bfd_reloc_status_type r;
6753 Elf_Internal_Sym *sym;
6755 struct elf_link_hash_entry *h;
6756 const char *sym_name;
6757 reloc_howto_type *howto;
6758 unsigned long r_symndx;
6760 bfd_vma branch_bit, from;
6761 bfd_boolean unresolved_reloc;
6763 unsigned int tls_type, tls_mask, tls_gd;
6764 struct plt_entry **ifunc;
6766 r_type = ELF32_R_TYPE (rel->r_info);
6770 unresolved_reloc = FALSE;
6772 r_symndx = ELF32_R_SYM (rel->r_info);
6774 if (r_symndx < symtab_hdr->sh_info)
6776 sym = local_syms + r_symndx;
6777 sec = local_sections[r_symndx];
6778 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6780 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6784 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6785 r_symndx, symtab_hdr, sym_hashes,
6787 unresolved_reloc, warned);
6789 sym_name = h->root.root.string;
6792 if (sec != NULL && elf_discarded_section (sec))
6794 /* For relocs against symbols from removed linkonce sections,
6795 or sections discarded by a linker script, we just want the
6796 section contents zeroed. Avoid any special processing. */
6798 if (r_type < R_PPC_max)
6799 howto = ppc_elf_howto_table[r_type];
6800 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6806 if (info->relocatable)
6809 && r_type == R_PPC_PLTREL24
6810 && rel->r_addend >= 32768)
6812 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6813 addend specifies the GOT pointer offset within .got2. */
6814 rel->r_addend += got2->output_offset;
6819 /* TLS optimizations. Replace instruction sequences and relocs
6820 based on information we collected in tls_optimize. We edit
6821 RELOCS so that --emit-relocs will output something sensible
6822 for the final instruction stream. */
6826 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6827 else if (local_got_offsets != NULL)
6829 struct plt_entry **local_plt;
6832 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6833 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
6834 tls_mask = lgot_masks[r_symndx];
6837 /* Ensure reloc mapping code below stays sane. */
6838 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6839 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6840 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6841 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6842 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6843 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6844 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6845 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6852 case R_PPC_GOT_TPREL16:
6853 case R_PPC_GOT_TPREL16_LO:
6854 if ((tls_mask & TLS_TLS) != 0
6855 && (tls_mask & TLS_TPREL) == 0)
6859 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6861 insn |= 0x3c020000; /* addis 0,2,0 */
6862 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6863 r_type = R_PPC_TPREL16_HA;
6864 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6869 if ((tls_mask & TLS_TLS) != 0
6870 && (tls_mask & TLS_TPREL) == 0)
6874 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6875 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
6878 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6879 r_type = R_PPC_TPREL16_LO;
6880 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6882 /* Was PPC_TLS which sits on insn boundary, now
6883 PPC_TPREL16_LO which is at low-order half-word. */
6884 rel->r_offset += d_offset;
6888 case R_PPC_GOT_TLSGD16_HI:
6889 case R_PPC_GOT_TLSGD16_HA:
6890 tls_gd = TLS_TPRELGD;
6891 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6895 case R_PPC_GOT_TLSLD16_HI:
6896 case R_PPC_GOT_TLSLD16_HA:
6897 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6900 if ((tls_mask & tls_gd) != 0)
6901 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6902 + R_PPC_GOT_TPREL16);
6905 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6906 rel->r_offset -= d_offset;
6907 r_type = R_PPC_NONE;
6909 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6913 case R_PPC_GOT_TLSGD16:
6914 case R_PPC_GOT_TLSGD16_LO:
6915 tls_gd = TLS_TPRELGD;
6916 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6920 case R_PPC_GOT_TLSLD16:
6921 case R_PPC_GOT_TLSLD16_LO:
6922 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6924 unsigned int insn1, insn2;
6928 offset = (bfd_vma) -1;
6929 /* If not using the newer R_PPC_TLSGD/LD to mark
6930 __tls_get_addr calls, we must trust that the call
6931 stays with its arg setup insns, ie. that the next
6932 reloc is the __tls_get_addr call associated with
6933 the current reloc. Edit both insns. */
6934 if (input_section->has_tls_get_addr_call
6936 && branch_reloc_hash_match (input_bfd, rel + 1,
6937 htab->tls_get_addr))
6938 offset = rel[1].r_offset;
6939 if ((tls_mask & tls_gd) != 0)
6942 insn1 = bfd_get_32 (output_bfd,
6943 contents + rel->r_offset - d_offset);
6944 insn1 &= (1 << 26) - 1;
6945 insn1 |= 32 << 26; /* lwz */
6946 if (offset != (bfd_vma) -1)
6948 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
6949 insn2 = 0x7c631214; /* add 3,3,2 */
6950 bfd_put_32 (output_bfd, insn2, contents + offset);
6952 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6953 + R_PPC_GOT_TPREL16);
6954 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6959 insn1 = 0x3c620000; /* addis 3,2,0 */
6962 /* Was an LD reloc. */
6964 r_symndx < symtab_hdr->sh_info;
6966 if (local_sections[r_symndx] == sec)
6968 if (r_symndx >= symtab_hdr->sh_info)
6970 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6972 rel->r_addend -= (local_syms[r_symndx].st_value
6973 + sec->output_offset
6974 + sec->output_section->vma);
6976 r_type = R_PPC_TPREL16_HA;
6977 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6978 if (offset != (bfd_vma) -1)
6980 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6981 rel[1].r_offset = offset + d_offset;
6982 rel[1].r_addend = rel->r_addend;
6983 insn2 = 0x38630000; /* addi 3,3,0 */
6984 bfd_put_32 (output_bfd, insn2, contents + offset);
6987 bfd_put_32 (output_bfd, insn1,
6988 contents + rel->r_offset - d_offset);
6991 /* We changed the symbol on an LD reloc. Start over
6992 in order to get h, sym, sec etc. right. */
7000 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7003 bfd_vma offset = rel->r_offset;
7005 if ((tls_mask & TLS_TPRELGD) != 0)
7008 r_type = R_PPC_NONE;
7009 insn2 = 0x7c631214; /* add 3,3,2 */
7014 r_type = R_PPC_TPREL16_LO;
7015 rel->r_offset += d_offset;
7016 insn2 = 0x38630000; /* addi 3,3,0 */
7018 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7019 bfd_put_32 (output_bfd, insn2, contents + offset);
7020 /* Zap the reloc on the _tls_get_addr call too. */
7021 BFD_ASSERT (offset == rel[1].r_offset);
7022 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7027 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7032 r_symndx < symtab_hdr->sh_info;
7034 if (local_sections[r_symndx] == sec)
7036 if (r_symndx >= symtab_hdr->sh_info)
7038 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7040 rel->r_addend -= (local_syms[r_symndx].st_value
7041 + sec->output_offset
7042 + sec->output_section->vma);
7044 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7045 rel->r_offset += d_offset;
7046 insn2 = 0x38630000; /* addi 3,3,0 */
7047 bfd_put_32 (output_bfd, insn2,
7048 contents + rel->r_offset - d_offset);
7049 /* Zap the reloc on the _tls_get_addr call too. */
7050 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7051 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7058 /* Handle other relocations that tweak non-addend part of insn. */
7065 /* Branch taken prediction relocations. */
7066 case R_PPC_ADDR14_BRTAKEN:
7067 case R_PPC_REL14_BRTAKEN:
7068 branch_bit = BRANCH_PREDICT_BIT;
7071 /* Branch not taken prediction relocations. */
7072 case R_PPC_ADDR14_BRNTAKEN:
7073 case R_PPC_REL14_BRNTAKEN:
7077 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7078 insn &= ~BRANCH_PREDICT_BIT;
7081 from = (rel->r_offset
7082 + input_section->output_offset
7083 + input_section->output_section->vma);
7085 /* Invert 'y' bit if not the default. */
7086 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7087 insn ^= BRANCH_PREDICT_BIT;
7089 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7095 if (!htab->is_vxworks)
7097 struct plt_entry *ent;
7101 if (h->type == STT_GNU_IFUNC)
7102 ifunc = &h->plt.plist;
7104 else if (local_got_offsets != NULL
7105 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7107 struct plt_entry **local_plt;
7109 local_plt = (struct plt_entry **) (local_got_offsets
7110 + symtab_hdr->sh_info);
7111 ifunc = local_plt + r_symndx;
7117 || is_branch_reloc (r_type)))
7120 if (r_type == R_PPC_PLTREL24 && info->shared)
7121 addend = rel->r_addend;
7122 ent = find_plt_ent (ifunc, got2, addend);
7126 if (h == NULL && (ent->plt.offset & 1) == 0)
7128 Elf_Internal_Rela rela;
7131 rela.r_offset = (htab->iplt->output_section->vma
7132 + htab->iplt->output_offset
7134 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7135 rela.r_addend = relocation;
7136 loc = htab->reliplt->contents;
7137 loc += (htab->reliplt->reloc_count++
7138 * sizeof (Elf32_External_Rela));
7139 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7141 ent->plt.offset |= 1;
7143 if (h == NULL && (ent->glink_offset & 1) == 0)
7145 unsigned char *p = ((unsigned char *) htab->glink->contents
7146 + ent->glink_offset);
7147 write_glink_stub (ent, htab->iplt, p, info);
7148 ent->glink_offset |= 1;
7151 unresolved_reloc = FALSE;
7152 if (htab->plt_type == PLT_NEW
7153 || !htab->elf.dynamic_sections_created
7155 relocation = (htab->glink->output_section->vma
7156 + htab->glink->output_offset
7157 + (ent->glink_offset & ~1));
7159 relocation = (htab->plt->output_section->vma
7160 + htab->plt->output_offset
7165 addend = rel->r_addend;
7168 if (r_type < R_PPC_max)
7169 howto = ppc_elf_howto_table[r_type];
7173 (*_bfd_error_handler)
7174 (_("%B: unknown relocation type %d for symbol %s"),
7175 input_bfd, (int) r_type, sym_name);
7177 bfd_set_error (bfd_error_bad_value);
7185 case R_PPC_EMB_MRKREF:
7186 case R_PPC_GNU_VTINHERIT:
7187 case R_PPC_GNU_VTENTRY:
7190 /* GOT16 relocations. Like an ADDR16 using the symbol's
7191 address in the GOT as relocation value instead of the
7192 symbol's value itself. Also, create a GOT entry for the
7193 symbol and put the symbol value there. */
7194 case R_PPC_GOT_TLSGD16:
7195 case R_PPC_GOT_TLSGD16_LO:
7196 case R_PPC_GOT_TLSGD16_HI:
7197 case R_PPC_GOT_TLSGD16_HA:
7198 tls_type = TLS_TLS | TLS_GD;
7201 case R_PPC_GOT_TLSLD16:
7202 case R_PPC_GOT_TLSLD16_LO:
7203 case R_PPC_GOT_TLSLD16_HI:
7204 case R_PPC_GOT_TLSLD16_HA:
7205 tls_type = TLS_TLS | TLS_LD;
7208 case R_PPC_GOT_TPREL16:
7209 case R_PPC_GOT_TPREL16_LO:
7210 case R_PPC_GOT_TPREL16_HI:
7211 case R_PPC_GOT_TPREL16_HA:
7212 tls_type = TLS_TLS | TLS_TPREL;
7215 case R_PPC_GOT_DTPREL16:
7216 case R_PPC_GOT_DTPREL16_LO:
7217 case R_PPC_GOT_DTPREL16_HI:
7218 case R_PPC_GOT_DTPREL16_HA:
7219 tls_type = TLS_TLS | TLS_DTPREL;
7223 case R_PPC_GOT16_LO:
7224 case R_PPC_GOT16_HI:
7225 case R_PPC_GOT16_HA:
7229 /* Relocation is to the entry for this symbol in the global
7235 if (htab->got == NULL)
7239 if (tls_type == (TLS_TLS | TLS_LD)
7241 || !h->def_dynamic))
7242 offp = &htab->tlsld_got.offset;
7246 dyn = htab->elf.dynamic_sections_created;
7247 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7249 && SYMBOL_REFERENCES_LOCAL (info, h)))
7250 /* This is actually a static link, or it is a
7251 -Bsymbolic link and the symbol is defined
7252 locally, or the symbol was forced to be local
7253 because of a version file. */
7258 unresolved_reloc = FALSE;
7260 offp = &h->got.offset;
7264 if (local_got_offsets == NULL)
7266 offp = &local_got_offsets[r_symndx];
7269 /* The offset must always be a multiple of 4. We use the
7270 least significant bit to record whether we have already
7271 processed this entry. */
7277 unsigned int tls_m = (tls_mask
7278 & (TLS_LD | TLS_GD | TLS_DTPREL
7279 | TLS_TPREL | TLS_TPRELGD));
7281 if (offp == &htab->tlsld_got.offset)
7287 /* We might have multiple got entries for this sym.
7288 Initialize them all. */
7293 if ((tls_m & TLS_LD) != 0)
7295 tls_ty = TLS_TLS | TLS_LD;
7298 else if ((tls_m & TLS_GD) != 0)
7300 tls_ty = TLS_TLS | TLS_GD;
7303 else if ((tls_m & TLS_DTPREL) != 0)
7305 tls_ty = TLS_TLS | TLS_DTPREL;
7306 tls_m &= ~TLS_DTPREL;
7308 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7310 tls_ty = TLS_TLS | TLS_TPREL;
7314 /* Generate relocs for the dynamic linker. */
7315 if ((info->shared || indx != 0)
7316 && (offp == &htab->tlsld_got.offset
7318 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7319 || h->root.type != bfd_link_hash_undefweak))
7321 asection *rsec = htab->relgot;
7324 outrel.r_offset = (htab->got->output_section->vma
7325 + htab->got->output_offset
7327 outrel.r_addend = 0;
7328 if (tls_ty & (TLS_LD | TLS_GD))
7330 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7331 if (tls_ty == (TLS_TLS | TLS_GD))
7333 loc = rsec->contents;
7334 loc += (rsec->reloc_count++
7335 * sizeof (Elf32_External_Rela));
7336 bfd_elf32_swap_reloca_out (output_bfd,
7338 outrel.r_offset += 4;
7340 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7343 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7344 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7345 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7346 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7348 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7349 else if (ifunc != NULL)
7350 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7352 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7353 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7355 outrel.r_addend += relocation;
7356 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7357 outrel.r_addend -= htab->elf.tls_sec->vma;
7359 loc = rsec->contents;
7360 loc += (rsec->reloc_count++
7361 * sizeof (Elf32_External_Rela));
7362 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7365 /* Init the .got section contents if we're not
7366 emitting a reloc. */
7369 bfd_vma value = relocation;
7371 if (tls_ty == (TLS_TLS | TLS_LD))
7373 else if (tls_ty != 0)
7375 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7376 if (tls_ty == (TLS_TLS | TLS_TPREL))
7377 value += DTP_OFFSET - TP_OFFSET;
7379 if (tls_ty == (TLS_TLS | TLS_GD))
7381 bfd_put_32 (output_bfd, value,
7382 htab->got->contents + off + 4);
7386 bfd_put_32 (output_bfd, value,
7387 htab->got->contents + off);
7391 if (tls_ty & (TLS_LD | TLS_GD))
7400 if (off >= (bfd_vma) -2)
7403 if ((tls_type & TLS_TLS) != 0)
7405 if (tls_type != (TLS_TLS | TLS_LD))
7407 if ((tls_mask & TLS_LD) != 0
7409 || !h->def_dynamic))
7411 if (tls_type != (TLS_TLS | TLS_GD))
7413 if ((tls_mask & TLS_GD) != 0)
7415 if (tls_type != (TLS_TLS | TLS_DTPREL))
7417 if ((tls_mask & TLS_DTPREL) != 0)
7424 relocation = (htab->got->output_section->vma
7425 + htab->got->output_offset
7427 - SYM_VAL (htab->elf.hgot));
7429 /* Addends on got relocations don't make much sense.
7430 x+off@got is actually x@got+off, and since the got is
7431 generated by a hash table traversal, the value in the
7432 got at entry m+n bears little relation to the entry m. */
7434 (*_bfd_error_handler)
7435 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
7438 (long) rel->r_offset,
7444 /* Relocations that need no special processing. */
7445 case R_PPC_LOCAL24PC:
7446 /* It makes no sense to point a local relocation
7447 at a symbol not in this object. */
7448 if (unresolved_reloc)
7450 if (! (*info->callbacks->undefined_symbol) (info,
7451 h->root.root.string,
7461 case R_PPC_DTPREL16:
7462 case R_PPC_DTPREL16_LO:
7463 case R_PPC_DTPREL16_HI:
7464 case R_PPC_DTPREL16_HA:
7465 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7468 /* Relocations that may need to be propagated if this is a shared
7471 case R_PPC_TPREL16_LO:
7472 case R_PPC_TPREL16_HI:
7473 case R_PPC_TPREL16_HA:
7474 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7475 /* The TPREL16 relocs shouldn't really be used in shared
7476 libs as they will result in DT_TEXTREL being set, but
7477 support them anyway. */
7481 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7484 case R_PPC_DTPREL32:
7485 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7488 case R_PPC_DTPMOD32:
7494 case R_PPC_REL16_LO:
7495 case R_PPC_REL16_HI:
7496 case R_PPC_REL16_HA:
7500 if (h == NULL || h == htab->elf.hgot)
7506 case R_PPC_ADDR16_LO:
7507 case R_PPC_ADDR16_HI:
7508 case R_PPC_ADDR16_HA:
7515 case R_PPC_REL14_BRTAKEN:
7516 case R_PPC_REL14_BRNTAKEN:
7517 /* If these relocations are not to a named symbol, they can be
7518 handled right here, no need to bother the dynamic linker. */
7519 if (SYMBOL_CALLS_LOCAL (info, h)
7520 || h == htab->elf.hgot)
7526 case R_PPC_ADDR14_BRTAKEN:
7527 case R_PPC_ADDR14_BRNTAKEN:
7528 if (h != NULL && !info->shared)
7533 if ((input_section->flags & SEC_ALLOC) == 0
7539 && ((h->root.type == bfd_link_hash_undefined
7540 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7541 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7542 || (h->root.type == bfd_link_hash_undefweak
7543 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
7544 && (must_be_dyn_reloc (info, r_type)
7545 || !SYMBOL_CALLS_LOCAL (info, h)))
7546 || (ELIMINATE_COPY_RELOCS
7551 && !h->def_regular))
7556 fprintf (stderr, "ppc_elf_relocate_section needs to "
7557 "create relocation for %s\n",
7558 (h && h->root.root.string
7559 ? h->root.root.string : "<unknown>"));
7562 /* When generating a shared object, these relocations
7563 are copied into the output file to be resolved at run
7567 sreloc = elf_section_data (input_section)->sreloc;
7568 if (!htab->elf.dynamic_sections_created)
7569 sreloc = htab->reliplt;
7576 _bfd_elf_section_offset (output_bfd, info, input_section,
7578 if (outrel.r_offset == (bfd_vma) -1
7579 || outrel.r_offset == (bfd_vma) -2)
7580 skip = (int) outrel.r_offset;
7581 outrel.r_offset += (input_section->output_section->vma
7582 + input_section->output_offset);
7585 memset (&outrel, 0, sizeof outrel);
7587 && (h->root.type == bfd_link_hash_undefined
7588 || h->root.type == bfd_link_hash_undefweak))
7589 || !SYMBOL_REFERENCES_LOCAL (info, h))
7591 unresolved_reloc = FALSE;
7592 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7593 outrel.r_addend = rel->r_addend;
7597 outrel.r_addend = relocation + rel->r_addend;
7599 if (r_type != R_PPC_ADDR32)
7605 /* If we get here when building a static
7606 executable, then the libc startup function
7607 responsible for applying indirect function
7608 relocations is going to complain about
7610 If we get here when building a dynamic
7611 executable, it will be because we have
7612 a text relocation. The dynamic loader
7613 will set the text segment writable and
7614 non-executable to apply text relocations.
7615 So we'll segfault when trying to run the
7616 indirection function to resolve the reloc. */
7617 (*_bfd_error_handler)
7618 (_("%B(%A+0x%lx): relocation %s for indirect "
7619 "function %s unsupported"),
7622 (long) rel->r_offset,
7627 else if (r_symndx == 0 || bfd_is_abs_section (sec))
7629 else if (sec == NULL || sec->owner == NULL)
7631 bfd_set_error (bfd_error_bad_value);
7638 /* We are turning this relocation into one
7639 against a section symbol. It would be
7640 proper to subtract the symbol's value,
7641 osec->vma, from the emitted reloc addend,
7642 but ld.so expects buggy relocs.
7643 FIXME: Why not always use a zero index? */
7644 osec = sec->output_section;
7645 indx = elf_section_data (osec)->dynindx;
7648 osec = htab->elf.text_index_section;
7649 indx = elf_section_data (osec)->dynindx;
7651 BFD_ASSERT (indx != 0);
7654 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7655 indx, osec->name, osec->flags,
7656 h->root.root.string);
7660 outrel.r_info = ELF32_R_INFO (indx, r_type);
7662 else if (ifunc != NULL)
7663 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7665 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7668 loc = sreloc->contents;
7669 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7670 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7675 /* This reloc will be computed at runtime. We clear the memory
7676 so that it contains predictable value. */
7678 && ((input_section->flags & SEC_ALLOC) != 0
7679 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7681 relocation = howto->pc_relative ? outrel.r_offset : 0;
7688 case R_PPC_RELAX_PLT:
7689 case R_PPC_RELAX_PLTREL24:
7692 struct plt_entry *ent;
7693 bfd_vma got2_addend = 0;
7695 if (r_type == R_PPC_RELAX_PLTREL24)
7698 got2_addend = addend;
7701 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
7702 if (htab->plt_type == PLT_NEW)
7703 relocation = (htab->glink->output_section->vma
7704 + htab->glink->output_offset
7705 + ent->glink_offset);
7707 relocation = (htab->plt->output_section->vma
7708 + htab->plt->output_offset
7715 relocation -= (input_section->output_section->vma
7716 + input_section->output_offset
7717 + rel->r_offset - 4);
7723 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7724 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7726 /* We're clearing the bits for R_PPC_ADDR16_HA
7727 and R_PPC_ADDR16_LO here. */
7731 /* t0 is HA, t1 is LO */
7732 relocation += addend;
7733 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7734 t1 |= relocation & 0xffff;
7736 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7737 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
7739 /* Rewrite the reloc and convert one of the trailing nop
7740 relocs to describe this relocation. */
7741 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7742 /* The relocs are at the bottom 2 bytes */
7743 rel[0].r_offset += 2;
7744 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7745 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7746 rel[1].r_offset += 4;
7747 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7752 /* Indirect .sdata relocation. */
7753 case R_PPC_EMB_SDAI16:
7754 BFD_ASSERT (htab->sdata[0].section != NULL);
7755 if (!is_static_defined (htab->sdata[0].sym))
7757 unresolved_reloc = TRUE;
7761 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7762 h, relocation, rel);
7766 /* Indirect .sdata2 relocation. */
7767 case R_PPC_EMB_SDA2I16:
7768 BFD_ASSERT (htab->sdata[1].section != NULL);
7769 if (!is_static_defined (htab->sdata[1].sym))
7771 unresolved_reloc = TRUE;
7775 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7776 h, relocation, rel);
7780 /* Handle the TOC16 reloc. We want to use the offset within the .got
7781 section, not the actual VMA. This is appropriate when generating
7782 an embedded ELF object, for which the .got section acts like the
7783 AIX .toc section. */
7784 case R_PPC_TOC16: /* phony GOT16 relocations */
7785 if (sec == NULL || sec->output_section == NULL)
7787 unresolved_reloc = TRUE;
7790 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7791 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7793 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7796 case R_PPC_PLTREL24:
7797 if (h == NULL || ifunc != NULL)
7799 /* Relocation is to the entry for this symbol in the
7800 procedure linkage table. */
7802 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7803 info->shared ? addend : 0);
7806 || htab->plt == NULL)
7808 /* We didn't make a PLT entry for this symbol. This
7809 happens when statically linking PIC code, or when
7810 using -Bsymbolic. */
7814 unresolved_reloc = FALSE;
7815 if (htab->plt_type == PLT_NEW)
7816 relocation = (htab->glink->output_section->vma
7817 + htab->glink->output_offset
7818 + ent->glink_offset);
7820 relocation = (htab->plt->output_section->vma
7821 + htab->plt->output_offset
7826 /* Relocate against _SDA_BASE_. */
7827 case R_PPC_SDAREL16:
7830 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
7833 || sec->output_section == NULL
7834 || !is_static_defined (sda))
7836 unresolved_reloc = TRUE;
7839 addend -= SYM_VAL (sda);
7841 name = bfd_get_section_name (abfd, sec->output_section);
7842 if (! ((CONST_STRNEQ (name, ".sdata")
7843 && (name[6] == 0 || name[6] == '.'))
7844 || (CONST_STRNEQ (name, ".sbss")
7845 && (name[5] == 0 || name[5] == '.'))))
7847 (*_bfd_error_handler)
7848 (_("%B: the target (%s) of a %s relocation is "
7849 "in the wrong output section (%s)"),
7858 /* Relocate against _SDA2_BASE_. */
7859 case R_PPC_EMB_SDA2REL:
7862 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
7865 || sec->output_section == NULL
7866 || !is_static_defined (sda))
7868 unresolved_reloc = TRUE;
7871 addend -= SYM_VAL (sda);
7873 name = bfd_get_section_name (abfd, sec->output_section);
7874 if (! (CONST_STRNEQ (name, ".sdata2")
7875 || CONST_STRNEQ (name, ".sbss2")))
7877 (*_bfd_error_handler)
7878 (_("%B: the target (%s) of a %s relocation is "
7879 "in the wrong output section (%s)"),
7888 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7889 case R_PPC_EMB_SDA21:
7890 case R_PPC_EMB_RELSDA:
7894 struct elf_link_hash_entry *sda = NULL;
7896 if (sec == NULL || sec->output_section == NULL)
7898 unresolved_reloc = TRUE;
7902 name = bfd_get_section_name (abfd, sec->output_section);
7903 if (((CONST_STRNEQ (name, ".sdata")
7904 && (name[6] == 0 || name[6] == '.'))
7905 || (CONST_STRNEQ (name, ".sbss")
7906 && (name[5] == 0 || name[5] == '.'))))
7909 sda = htab->sdata[0].sym;
7911 else if (CONST_STRNEQ (name, ".sdata2")
7912 || CONST_STRNEQ (name, ".sbss2"))
7915 sda = htab->sdata[1].sym;
7917 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7918 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7924 (*_bfd_error_handler)
7925 (_("%B: the target (%s) of a %s relocation is "
7926 "in the wrong output section (%s)"),
7932 bfd_set_error (bfd_error_bad_value);
7939 if (!is_static_defined (sda))
7941 unresolved_reloc = TRUE;
7944 addend -= SYM_VAL (sda);
7947 if (r_type == R_PPC_EMB_SDA21)
7949 bfd_vma insn; /* Fill in register field. */
7951 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7952 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7953 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7958 /* Relocate against the beginning of the section. */
7960 case R_PPC_SECTOFF_LO:
7961 case R_PPC_SECTOFF_HI:
7962 case R_PPC_SECTOFF_HA:
7963 if (sec == NULL || sec->output_section == NULL)
7965 unresolved_reloc = TRUE;
7968 addend -= sec->output_section->vma;
7971 /* Negative relocations. */
7972 case R_PPC_EMB_NADDR32:
7973 case R_PPC_EMB_NADDR16:
7974 case R_PPC_EMB_NADDR16_LO:
7975 case R_PPC_EMB_NADDR16_HI:
7976 case R_PPC_EMB_NADDR16_HA:
7977 addend -= 2 * relocation;
7981 case R_PPC_GLOB_DAT:
7982 case R_PPC_JMP_SLOT:
7983 case R_PPC_RELATIVE:
7984 case R_PPC_IRELATIVE:
7986 case R_PPC_PLTREL32:
7987 case R_PPC_PLT16_LO:
7988 case R_PPC_PLT16_HI:
7989 case R_PPC_PLT16_HA:
7991 case R_PPC_EMB_RELSEC16:
7992 case R_PPC_EMB_RELST_LO:
7993 case R_PPC_EMB_RELST_HI:
7994 case R_PPC_EMB_RELST_HA:
7995 case R_PPC_EMB_BIT_FLD:
7996 (*_bfd_error_handler)
7997 (_("%B: relocation %s is not yet supported for symbol %s."),
8002 bfd_set_error (bfd_error_invalid_operation);
8007 /* Do any further special processing. */
8013 case R_PPC_ADDR16_HA:
8014 case R_PPC_REL16_HA:
8015 case R_PPC_SECTOFF_HA:
8016 case R_PPC_TPREL16_HA:
8017 case R_PPC_DTPREL16_HA:
8018 case R_PPC_EMB_NADDR16_HA:
8019 case R_PPC_EMB_RELST_HA:
8020 /* It's just possible that this symbol is a weak symbol
8021 that's not actually defined anywhere. In that case,
8022 'sec' would be NULL, and we should leave the symbol
8023 alone (it will be set to zero elsewhere in the link). */
8028 case R_PPC_PLT16_HA:
8029 case R_PPC_GOT16_HA:
8030 case R_PPC_GOT_TLSGD16_HA:
8031 case R_PPC_GOT_TLSLD16_HA:
8032 case R_PPC_GOT_TPREL16_HA:
8033 case R_PPC_GOT_DTPREL16_HA:
8034 /* Add 0x10000 if sign bit in 0:15 is set.
8035 Bits 0:15 are not used. */
8041 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8042 "offset = %ld, addend = %ld\n",
8047 (long) rel->r_offset,
8051 if (unresolved_reloc
8052 && !((input_section->flags & SEC_DEBUGGING) != 0
8055 (*_bfd_error_handler)
8056 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
8059 (long) rel->r_offset,
8065 r = _bfd_final_link_relocate (howto,
8073 if (r != bfd_reloc_ok)
8075 if (r == bfd_reloc_overflow)
8080 && h->root.type == bfd_link_hash_undefweak
8081 && howto->pc_relative)
8083 /* Assume this is a call protected by other code that
8084 detect the symbol is undefined. If this is the case,
8085 we can safely ignore the overflow. If not, the
8086 program is hosed anyway, and a little warning isn't
8092 if (! (*info->callbacks->reloc_overflow) (info,
8093 (h ? &h->root : NULL),
8104 (*_bfd_error_handler)
8105 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
8106 input_bfd, input_section,
8107 (long) rel->r_offset, howto->name, sym_name, (int) r);
8114 fprintf (stderr, "\n");
8120 /* Finish up dynamic symbol handling. We set the contents of various
8121 dynamic sections here. */
8124 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
8125 struct bfd_link_info *info,
8126 struct elf_link_hash_entry *h,
8127 Elf_Internal_Sym *sym)
8129 struct ppc_elf_link_hash_table *htab;
8130 struct plt_entry *ent;
8131 bfd_boolean doneone;
8134 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
8135 h->root.root.string);
8138 htab = ppc_elf_hash_table (info);
8139 BFD_ASSERT (htab->elf.dynobj != NULL);
8142 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8143 if (ent->plt.offset != (bfd_vma) -1)
8147 Elf_Internal_Rela rela;
8149 bfd_vma reloc_index;
8151 if (htab->plt_type == PLT_NEW
8152 || !htab->elf.dynamic_sections_created
8153 || h->dynindx == -1)
8154 reloc_index = ent->plt.offset / 4;
8157 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
8158 / htab->plt_slot_size);
8159 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
8160 && htab->plt_type == PLT_OLD)
8161 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
8164 /* This symbol has an entry in the procedure linkage table.
8166 if (htab->plt_type == PLT_VXWORKS
8167 && htab->elf.dynamic_sections_created
8168 && h->dynindx != -1)
8171 const bfd_vma *plt_entry;
8173 /* The first three entries in .got.plt are reserved. */
8174 got_offset = (reloc_index + 3) * 4;
8176 /* Use the right PLT. */
8177 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8178 : ppc_elf_vxworks_plt_entry;
8180 /* Fill in the .plt on VxWorks. */
8183 bfd_put_32 (output_bfd,
8184 plt_entry[0] | PPC_HA (got_offset),
8185 htab->plt->contents + ent->plt.offset + 0);
8186 bfd_put_32 (output_bfd,
8187 plt_entry[1] | PPC_LO (got_offset),
8188 htab->plt->contents + ent->plt.offset + 4);
8192 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
8194 bfd_put_32 (output_bfd,
8195 plt_entry[0] | PPC_HA (got_loc),
8196 htab->plt->contents + ent->plt.offset + 0);
8197 bfd_put_32 (output_bfd,
8198 plt_entry[1] | PPC_LO (got_loc),
8199 htab->plt->contents + ent->plt.offset + 4);
8202 bfd_put_32 (output_bfd, plt_entry[2],
8203 htab->plt->contents + ent->plt.offset + 8);
8204 bfd_put_32 (output_bfd, plt_entry[3],
8205 htab->plt->contents + ent->plt.offset + 12);
8207 /* This instruction is an immediate load. The value loaded is
8208 the byte offset of the R_PPC_JMP_SLOT relocation from the
8209 start of the .rela.plt section. The value is stored in the
8210 low-order 16 bits of the load instruction. */
8211 /* NOTE: It appears that this is now an index rather than a
8212 prescaled offset. */
8213 bfd_put_32 (output_bfd,
8214 plt_entry[4] | reloc_index,
8215 htab->plt->contents + ent->plt.offset + 16);
8216 /* This instruction is a PC-relative branch whose target is
8217 the start of the PLT section. The address of this branch
8218 instruction is 20 bytes beyond the start of this PLT entry.
8219 The address is encoded in bits 6-29, inclusive. The value
8220 stored is right-shifted by two bits, permitting a 26-bit
8222 bfd_put_32 (output_bfd,
8224 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8225 htab->plt->contents + ent->plt.offset + 20);
8226 bfd_put_32 (output_bfd, plt_entry[6],
8227 htab->plt->contents + ent->plt.offset + 24);
8228 bfd_put_32 (output_bfd, plt_entry[7],
8229 htab->plt->contents + ent->plt.offset + 28);
8231 /* Fill in the GOT entry corresponding to this PLT slot with
8232 the address immediately after the the "bctr" instruction
8233 in this PLT entry. */
8234 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8235 + htab->plt->output_offset
8236 + ent->plt.offset + 16),
8237 htab->sgotplt->contents + got_offset);
8241 /* Fill in a couple of entries in .rela.plt.unloaded. */
8242 loc = htab->srelplt2->contents
8243 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8244 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8245 * sizeof (Elf32_External_Rela));
8247 /* Provide the @ha relocation for the first instruction. */
8248 rela.r_offset = (htab->plt->output_section->vma
8249 + htab->plt->output_offset
8250 + ent->plt.offset + 2);
8251 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8253 rela.r_addend = got_offset;
8254 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8255 loc += sizeof (Elf32_External_Rela);
8257 /* Provide the @l relocation for the second instruction. */
8258 rela.r_offset = (htab->plt->output_section->vma
8259 + htab->plt->output_offset
8260 + ent->plt.offset + 6);
8261 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8263 rela.r_addend = got_offset;
8264 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8265 loc += sizeof (Elf32_External_Rela);
8267 /* Provide a relocation for the GOT entry corresponding to this
8268 PLT slot. Point it at the middle of the .plt entry. */
8269 rela.r_offset = (htab->sgotplt->output_section->vma
8270 + htab->sgotplt->output_offset
8272 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
8274 rela.r_addend = ent->plt.offset + 16;
8275 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8278 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8279 In particular, the offset for the relocation is not the
8280 address of the PLT entry for this function, as specified
8281 by the ABI. Instead, the offset is set to the address of
8282 the GOT slot for this function. See EABI 4.4.4.1. */
8283 rela.r_offset = (htab->sgotplt->output_section->vma
8284 + htab->sgotplt->output_offset
8290 asection *splt = htab->plt;
8291 if (!htab->elf.dynamic_sections_created
8292 || h->dynindx == -1)
8295 rela.r_offset = (splt->output_section->vma
8296 + splt->output_offset
8298 if (htab->plt_type == PLT_OLD
8299 || !htab->elf.dynamic_sections_created
8300 || h->dynindx == -1)
8302 /* We don't need to fill in the .plt. The ppc dynamic
8303 linker will fill it in. */
8307 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8308 + htab->glink->output_section->vma
8309 + htab->glink->output_offset);
8310 bfd_put_32 (output_bfd, val,
8311 splt->contents + ent->plt.offset);
8315 /* Fill in the entry in the .rela.plt section. */
8317 if (!htab->elf.dynamic_sections_created
8318 || h->dynindx == -1)
8320 BFD_ASSERT (h->type == STT_GNU_IFUNC
8322 && (h->root.type == bfd_link_hash_defined
8323 || h->root.type == bfd_link_hash_defweak));
8324 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8325 rela.r_addend = SYM_VAL (h);
8328 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
8330 if (!htab->elf.dynamic_sections_created
8331 || h->dynindx == -1)
8332 loc = (htab->reliplt->contents
8333 + (htab->reliplt->reloc_count++
8334 * sizeof (Elf32_External_Rela)));
8336 loc = (htab->relplt->contents
8337 + reloc_index * sizeof (Elf32_External_Rela));
8338 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8340 if (!h->def_regular)
8342 /* Mark the symbol as undefined, rather than as
8343 defined in the .plt section. Leave the value if
8344 there were any relocations where pointer equality
8345 matters (this is a clue for the dynamic linker, to
8346 make function pointer comparisons work between an
8347 application and shared library), otherwise set it
8349 sym->st_shndx = SHN_UNDEF;
8350 if (!h->pointer_equality_needed)
8352 else if (!h->ref_regular_nonweak)
8354 /* This breaks function pointer comparisons, but
8355 that is better than breaking tests for a NULL
8356 function pointer. */
8360 else if (h->type == STT_GNU_IFUNC
8363 /* Set the value of ifunc symbols in a non-pie
8364 executable to the glink entry. This is to avoid
8365 text relocations. We can't do this for ifunc in
8366 allocate_dynrelocs, as we do for normal dynamic
8367 function symbols with plt entries, because we need
8368 to keep the original value around for the ifunc
8370 sym->st_shndx = (_bfd_elf_section_from_bfd_section
8371 (output_bfd, htab->glink->output_section));
8372 sym->st_value = (ent->glink_offset +
8373 htab->glink->output_offset
8374 + htab->glink->output_section->vma);
8379 if (htab->plt_type == PLT_NEW
8380 || !htab->elf.dynamic_sections_created
8381 || h->dynindx == -1)
8384 asection *splt = htab->plt;
8385 if (!htab->elf.dynamic_sections_created
8386 || h->dynindx == -1)
8389 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
8391 if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
8393 bfd_put_32 (output_bfd, LWZ_11_3, p);
8395 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
8397 bfd_put_32 (output_bfd, MR_0_3, p);
8399 bfd_put_32 (output_bfd, CMPWI_11_0, p);
8401 bfd_put_32 (output_bfd, ADD_3_12_2, p);
8403 bfd_put_32 (output_bfd, BEQLR, p);
8405 bfd_put_32 (output_bfd, MR_3_0, p);
8407 bfd_put_32 (output_bfd, NOP, p);
8411 write_glink_stub (ent, splt, p, info);
8414 /* We only need one non-PIC glink stub. */
8424 Elf_Internal_Rela rela;
8427 /* This symbols needs a copy reloc. Set it up. */
8430 fprintf (stderr, ", copy");
8433 BFD_ASSERT (h->dynindx != -1);
8435 if (ppc_elf_hash_entry (h)->has_sda_refs)
8439 BFD_ASSERT (s != NULL);
8441 rela.r_offset = SYM_VAL (h);
8442 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8444 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8445 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8449 fprintf (stderr, "\n");
8452 /* Mark some specially defined symbols as absolute. */
8453 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8454 || (!htab->is_vxworks
8455 && (h == htab->elf.hgot
8456 || strcmp (h->root.root.string,
8457 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
8458 sym->st_shndx = SHN_ABS;
8463 static enum elf_reloc_type_class
8464 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8466 switch (ELF32_R_TYPE (rela->r_info))
8468 case R_PPC_RELATIVE:
8469 return reloc_class_relative;
8472 case R_PPC_JMP_SLOT:
8473 return reloc_class_plt;
8475 return reloc_class_copy;
8477 return reloc_class_normal;
8481 /* Finish up the dynamic sections. */
8484 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8485 struct bfd_link_info *info)
8489 struct ppc_elf_link_hash_table *htab;
8492 bfd_boolean ret = TRUE;
8495 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8498 htab = ppc_elf_hash_table (info);
8499 dynobj = elf_hash_table (info)->dynobj;
8500 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8501 if (htab->is_vxworks)
8502 splt = bfd_get_section_by_name (dynobj, ".plt");
8507 if (htab->elf.hgot != NULL)
8508 got = SYM_VAL (htab->elf.hgot);
8510 if (htab->elf.dynamic_sections_created)
8512 Elf32_External_Dyn *dyncon, *dynconend;
8514 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
8516 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8517 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8518 for (; dyncon < dynconend; dyncon++)
8520 Elf_Internal_Dyn dyn;
8523 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
8528 if (htab->is_vxworks)
8532 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8536 dyn.d_un.d_val = htab->relplt->size;
8541 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8545 dyn.d_un.d_ptr = got;
8549 if (htab->is_vxworks)
8552 dyn.d_un.d_ptr -= htab->relplt->size;
8558 if (htab->is_vxworks
8559 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8564 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8568 if (htab->got != NULL)
8570 if (htab->elf.hgot->root.u.def.section == htab->got
8571 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
8573 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
8575 p += htab->elf.hgot->root.u.def.value;
8576 if (htab->plt_type == PLT_OLD)
8578 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8579 so that a function can easily find the address of
8580 _GLOBAL_OFFSET_TABLE_. */
8581 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8582 < htab->elf.hgot->root.u.def.section->size);
8583 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8588 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8589 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8590 < htab->elf.hgot->root.u.def.section->size);
8591 bfd_put_32 (output_bfd, val, p);
8596 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
8597 htab->elf.hgot->root.root.string,
8598 (htab->sgotplt != NULL
8599 ? htab->sgotplt->name : htab->got->name));
8600 bfd_set_error (bfd_error_bad_value);
8604 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8607 /* Fill in the first entry in the VxWorks procedure linkage table. */
8608 if (splt && splt->size > 0)
8610 /* Use the right PLT. */
8611 static const bfd_vma *plt_entry = NULL;
8612 plt_entry = info->shared ?
8613 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
8617 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
8619 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
8620 splt->contents + 0);
8621 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
8622 splt->contents + 4);
8626 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8627 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8629 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8630 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8631 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8632 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8633 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8634 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8638 Elf_Internal_Rela rela;
8641 loc = htab->srelplt2->contents;
8643 /* Output the @ha relocation for the first instruction. */
8644 rela.r_offset = (htab->plt->output_section->vma
8645 + htab->plt->output_offset
8647 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8649 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8650 loc += sizeof (Elf32_External_Rela);
8652 /* Output the @l relocation for the second instruction. */
8653 rela.r_offset = (htab->plt->output_section->vma
8654 + htab->plt->output_offset
8656 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8658 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8659 loc += sizeof (Elf32_External_Rela);
8661 /* Fix up the remaining relocations. They may have the wrong
8662 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8663 in which symbols were output. */
8664 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8666 Elf_Internal_Rela rel;
8668 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8669 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8670 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8671 loc += sizeof (Elf32_External_Rela);
8673 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8674 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8675 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8676 loc += sizeof (Elf32_External_Rela);
8678 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8679 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
8680 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8681 loc += sizeof (Elf32_External_Rela);
8686 if (htab->glink != NULL
8687 && htab->glink->contents != NULL
8688 && htab->elf.dynamic_sections_created)
8691 unsigned char *endp;
8696 * PIC glink code is the following:
8698 * # ith PLT code stub.
8699 * addis 11,30,(plt+(i-1)*4-got)@ha
8700 * lwz 11,(plt+(i-1)*4-got)@l(11)
8704 * # A table of branches, one for each plt entry.
8705 * # The idea is that the plt call stub loads ctr and r11 with these
8706 * # addresses, so (r11 - res_0) gives the plt index * 4.
8707 * res_0: b PLTresolve
8708 * res_1: b PLTresolve
8710 * # Some number of entries towards the end can be nops
8716 * addis 11,11,(1f-res_0)@ha
8719 * 1: addi 11,11,(1b-res_0)@l
8722 * sub 11,11,12 # r11 = index * 4
8723 * addis 12,12,(got+4-1b)@ha
8724 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8725 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8728 * add 11,0,11 # r11 = index * 12 = reloc offset.
8731 static const unsigned int pic_plt_resolve[] =
8752 * Non-PIC glink code is a little simpler.
8754 * # ith PLT code stub.
8755 * lis 11,(plt+(i-1)*4)@ha
8756 * lwz 11,(plt+(i-1)*4)@l(11)
8760 * The branch table is the same, then comes
8764 * addis 11,11,(-res_0)@ha
8765 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8766 * addi 11,11,(-res_0)@l # r11 = index * 4
8769 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8770 * add 11,0,11 # r11 = index * 12 = reloc offset.
8773 static const unsigned int plt_resolve[] =
8793 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8795 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
8798 /* Build the branch table, one for each plt entry (less one),
8799 and perhaps some padding. */
8800 p = htab->glink->contents;
8801 p += htab->glink_pltresolve;
8802 endp = htab->glink->contents;
8803 endp += htab->glink->size - GLINK_PLTRESOLVE;
8804 while (p < endp - 8 * 4)
8806 bfd_put_32 (output_bfd, B + endp - p, p);
8811 bfd_put_32 (output_bfd, NOP, p);
8815 res0 = (htab->glink_pltresolve
8816 + htab->glink->output_section->vma
8817 + htab->glink->output_offset);
8819 /* Last comes the PLTresolve stub. */
8824 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8826 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8829 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8831 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8832 + htab->glink->output_section->vma
8833 + htab->glink->output_offset);
8835 bfd_put_32 (output_bfd,
8836 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8837 bfd_put_32 (output_bfd,
8838 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8839 bfd_put_32 (output_bfd,
8840 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8841 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8843 bfd_put_32 (output_bfd,
8844 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8845 bfd_put_32 (output_bfd,
8846 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8850 bfd_put_32 (output_bfd,
8851 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8852 bfd_put_32 (output_bfd,
8853 LWZ_12_12 + 4, p + 9*4);
8858 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8860 bfd_put_32 (output_bfd, plt_resolve[i], p);
8863 p -= 4 * ARRAY_SIZE (plt_resolve);
8865 bfd_put_32 (output_bfd,
8866 LIS_12 + PPC_HA (got + 4), p + 0*4);
8867 bfd_put_32 (output_bfd,
8868 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8869 bfd_put_32 (output_bfd,
8870 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8871 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8873 bfd_put_32 (output_bfd,
8874 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8875 bfd_put_32 (output_bfd,
8876 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8880 bfd_put_32 (output_bfd,
8881 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8882 bfd_put_32 (output_bfd,
8883 LWZ_12_12 + 4, p + 6*4);
8891 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8892 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8893 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8894 #define TARGET_BIG_NAME "elf32-powerpc"
8895 #define ELF_ARCH bfd_arch_powerpc
8896 #define ELF_MACHINE_CODE EM_PPC
8897 #ifdef __QNXTARGET__
8898 #define ELF_MAXPAGESIZE 0x1000
8900 #define ELF_MAXPAGESIZE 0x10000
8902 #define ELF_MINPAGESIZE 0x1000
8903 #define ELF_COMMONPAGESIZE 0x1000
8904 #define elf_info_to_howto ppc_elf_info_to_howto
8906 #ifdef EM_CYGNUS_POWERPC
8907 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8911 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8914 #define elf_backend_plt_not_loaded 1
8915 #define elf_backend_can_gc_sections 1
8916 #define elf_backend_can_refcount 1
8917 #define elf_backend_rela_normal 1
8919 #define bfd_elf32_mkobject ppc_elf_mkobject
8920 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8921 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8922 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8923 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8924 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8925 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8926 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8928 #define elf_backend_object_p ppc_elf_object_p
8929 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8930 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8931 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8932 #define elf_backend_relocate_section ppc_elf_relocate_section
8933 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8934 #define elf_backend_check_relocs ppc_elf_check_relocs
8935 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8936 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8937 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8938 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8939 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8940 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8941 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8942 #define elf_backend_fake_sections ppc_elf_fake_sections
8943 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8944 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8945 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8946 #define elf_backend_write_core_note ppc_elf_write_core_note
8947 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8948 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8949 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8950 #define elf_backend_write_section ppc_elf_write_section
8951 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8952 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8953 #define elf_backend_action_discarded ppc_elf_action_discarded
8954 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8955 #define elf_backend_post_process_headers _bfd_elf_set_osabi
8957 #include "elf32-target.h"
8959 /* VxWorks Target */
8961 #undef TARGET_LITTLE_SYM
8962 #undef TARGET_LITTLE_NAME
8964 #undef TARGET_BIG_SYM
8965 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8966 #undef TARGET_BIG_NAME
8967 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8969 /* VxWorks uses the elf default section flags for .plt. */
8970 static const struct bfd_elf_special_section *
8971 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
8973 if (sec->name == NULL)
8976 if (strcmp (sec->name, ".plt") == 0)
8977 return _bfd_elf_get_sec_type_attr (abfd, sec);
8979 return ppc_elf_get_sec_type_attr (abfd, sec);
8982 /* Like ppc_elf_link_hash_table_create, but overrides
8983 appropriately for VxWorks. */
8984 static struct bfd_link_hash_table *
8985 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8987 struct bfd_link_hash_table *ret;
8989 ret = ppc_elf_link_hash_table_create (abfd);
8992 struct ppc_elf_link_hash_table *htab
8993 = (struct ppc_elf_link_hash_table *)ret;
8994 htab->is_vxworks = 1;
8995 htab->plt_type = PLT_VXWORKS;
8996 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8997 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8998 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
9003 /* Tweak magic VxWorks symbols as they are loaded. */
9005 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
9006 struct bfd_link_info *info,
9007 Elf_Internal_Sym *sym,
9008 const char **namep ATTRIBUTE_UNUSED,
9009 flagword *flagsp ATTRIBUTE_UNUSED,
9013 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
9017 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
9021 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
9023 ppc_elf_final_write_processing(abfd, linker);
9024 elf_vxworks_final_write_processing(abfd, linker);
9027 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
9029 #undef elf_backend_want_plt_sym
9030 #define elf_backend_want_plt_sym 1
9031 #undef elf_backend_want_got_plt
9032 #define elf_backend_want_got_plt 1
9033 #undef elf_backend_got_symbol_offset
9034 #define elf_backend_got_symbol_offset 0
9035 #undef elf_backend_plt_not_loaded
9036 #define elf_backend_plt_not_loaded 0
9037 #undef elf_backend_plt_readonly
9038 #define elf_backend_plt_readonly 1
9039 #undef elf_backend_got_header_size
9040 #define elf_backend_got_header_size 12
9042 #undef bfd_elf32_get_synthetic_symtab
9044 #undef bfd_elf32_bfd_link_hash_table_create
9045 #define bfd_elf32_bfd_link_hash_table_create \
9046 ppc_elf_vxworks_link_hash_table_create
9047 #undef elf_backend_add_symbol_hook
9048 #define elf_backend_add_symbol_hook \
9049 ppc_elf_vxworks_add_symbol_hook
9050 #undef elf_backend_link_output_symbol_hook
9051 #define elf_backend_link_output_symbol_hook \
9052 elf_vxworks_link_output_symbol_hook
9053 #undef elf_backend_final_write_processing
9054 #define elf_backend_final_write_processing \
9055 ppc_elf_vxworks_final_write_processing
9056 #undef elf_backend_get_sec_type_attr
9057 #define elf_backend_get_sec_type_attr \
9058 ppc_elf_vxworks_get_sec_type_attr
9059 #undef elf_backend_emit_relocs
9060 #define elf_backend_emit_relocs \
9061 elf_vxworks_emit_relocs
9064 #define elf32_bed ppc_elf_vxworks_bed
9065 #undef elf_backend_post_process_headers
9067 #include "elf32-target.h"
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