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;
3326 for (ent = *plist; ent != NULL; ent = ent->next)
3327 if (ent->sec == sec && ent->addend == addend)
3331 bfd_size_type amt = sizeof (*ent);
3332 ent = bfd_alloc (abfd, amt);
3337 ent->addend = addend;
3338 ent->plt.refcount = 0;
3341 ent->plt.refcount += 1;
3345 static struct plt_entry *
3346 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3348 struct plt_entry *ent;
3352 for (ent = *plist; ent != NULL; ent = ent->next)
3353 if (ent->sec == sec && ent->addend == addend)
3359 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3361 return (r_type == R_PPC_PLTREL24
3362 || r_type == R_PPC_LOCAL24PC
3363 || r_type == R_PPC_REL24
3364 || r_type == R_PPC_REL14
3365 || r_type == R_PPC_REL14_BRTAKEN
3366 || r_type == R_PPC_REL14_BRNTAKEN
3367 || r_type == R_PPC_ADDR24
3368 || r_type == R_PPC_ADDR14
3369 || r_type == R_PPC_ADDR14_BRTAKEN
3370 || r_type == R_PPC_ADDR14_BRNTAKEN);
3374 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3376 (*_bfd_error_handler)
3377 (_("%B: relocation %s cannot be used when making a shared object"),
3379 ppc_elf_howto_table[r_type]->name);
3380 bfd_set_error (bfd_error_bad_value);
3383 /* Look through the relocs for a section during the first phase, and
3384 allocate space in the global offset table or procedure linkage
3388 ppc_elf_check_relocs (bfd *abfd,
3389 struct bfd_link_info *info,
3391 const Elf_Internal_Rela *relocs)
3393 struct ppc_elf_link_hash_table *htab;
3394 Elf_Internal_Shdr *symtab_hdr;
3395 struct elf_link_hash_entry **sym_hashes;
3396 const Elf_Internal_Rela *rel;
3397 const Elf_Internal_Rela *rel_end;
3398 asection *got2, *sreloc;
3399 struct elf_link_hash_entry *tga;
3401 if (info->relocatable)
3404 /* Don't do anything special with non-loaded, non-alloced sections.
3405 In particular, any relocs in such sections should not affect GOT
3406 and PLT reference counting (ie. we don't allow them to create GOT
3407 or PLT entries), there's no possibility or desire to optimize TLS
3408 relocs, and there's not much point in propagating relocs to shared
3409 libs that the dynamic linker won't relocate. */
3410 if ((sec->flags & SEC_ALLOC) == 0)
3414 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3418 BFD_ASSERT (is_ppc_elf (abfd));
3420 /* Initialize howto table if not already done. */
3421 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3422 ppc_elf_howto_init ();
3424 htab = ppc_elf_hash_table (info);
3425 if (htab->glink == NULL)
3427 if (htab->elf.dynobj == NULL)
3428 htab->elf.dynobj = abfd;
3429 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3432 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3433 FALSE, FALSE, TRUE);
3434 symtab_hdr = &elf_symtab_hdr (abfd);
3435 sym_hashes = elf_sym_hashes (abfd);
3436 got2 = bfd_get_section_by_name (abfd, ".got2");
3439 rel_end = relocs + sec->reloc_count;
3440 for (rel = relocs; rel < rel_end; rel++)
3442 unsigned long r_symndx;
3443 enum elf_ppc_reloc_type r_type;
3444 struct elf_link_hash_entry *h;
3446 struct plt_entry **ifunc;
3448 r_symndx = ELF32_R_SYM (rel->r_info);
3449 if (r_symndx < symtab_hdr->sh_info)
3453 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3454 while (h->root.type == bfd_link_hash_indirect
3455 || h->root.type == bfd_link_hash_warning)
3456 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3459 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3460 This shows up in particular in an R_PPC_ADDR32 in the eabi
3463 && htab->got == NULL
3464 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3466 if (htab->elf.dynobj == NULL)
3467 htab->elf.dynobj = abfd;
3468 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3470 BFD_ASSERT (h == htab->elf.hgot);
3475 r_type = ELF32_R_TYPE (rel->r_info);
3476 if (!htab->is_vxworks)
3480 if (h->type == STT_GNU_IFUNC)
3481 ifunc = &h->plt.plist;
3485 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3490 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3492 || is_branch_reloc (r_type)))
3496 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3501 /* STT_GNU_IFUNC symbols must have a PLT entry;
3502 In a non-pie executable even when there are
3505 if (r_type == R_PPC_PLTREL24)
3507 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3509 addend = rel->r_addend;
3511 if (!update_plt_info (abfd, ifunc,
3512 addend < 32768 ? NULL : got2, addend))
3518 if (!htab->is_vxworks
3519 && is_branch_reloc (r_type)
3524 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3525 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3526 /* We have a new-style __tls_get_addr call with a marker
3530 /* Mark this section as having an old-style call. */
3531 sec->has_tls_get_addr_call = 1;
3538 /* These special tls relocs tie a call to __tls_get_addr with
3539 its parameter symbol. */
3542 case R_PPC_GOT_TLSLD16:
3543 case R_PPC_GOT_TLSLD16_LO:
3544 case R_PPC_GOT_TLSLD16_HI:
3545 case R_PPC_GOT_TLSLD16_HA:
3546 tls_type = TLS_TLS | TLS_LD;
3549 case R_PPC_GOT_TLSGD16:
3550 case R_PPC_GOT_TLSGD16_LO:
3551 case R_PPC_GOT_TLSGD16_HI:
3552 case R_PPC_GOT_TLSGD16_HA:
3553 tls_type = TLS_TLS | TLS_GD;
3556 case R_PPC_GOT_TPREL16:
3557 case R_PPC_GOT_TPREL16_LO:
3558 case R_PPC_GOT_TPREL16_HI:
3559 case R_PPC_GOT_TPREL16_HA:
3560 if (!info->executable)
3561 info->flags |= DF_STATIC_TLS;
3562 tls_type = TLS_TLS | TLS_TPREL;
3565 case R_PPC_GOT_DTPREL16:
3566 case R_PPC_GOT_DTPREL16_LO:
3567 case R_PPC_GOT_DTPREL16_HI:
3568 case R_PPC_GOT_DTPREL16_HA:
3569 tls_type = TLS_TLS | TLS_DTPREL;
3571 sec->has_tls_reloc = 1;
3574 /* GOT16 relocations */
3576 case R_PPC_GOT16_LO:
3577 case R_PPC_GOT16_HI:
3578 case R_PPC_GOT16_HA:
3579 /* This symbol requires a global offset table entry. */
3580 if (htab->got == NULL)
3582 if (htab->elf.dynobj == NULL)
3583 htab->elf.dynobj = abfd;
3584 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3589 h->got.refcount += 1;
3590 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3593 /* This is a global offset table entry for a local symbol. */
3594 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3597 /* We may also need a plt entry if the symbol turns out to be
3599 if (h != NULL && !info->shared)
3601 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3606 /* Indirect .sdata relocation. */
3607 case R_PPC_EMB_SDAI16:
3610 bad_shared_reloc (abfd, r_type);
3613 if (htab->sdata[0].section == NULL
3614 && !ppc_elf_create_linker_section (abfd, info, 0,
3617 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3622 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3623 h->non_got_ref = TRUE;
3627 /* Indirect .sdata2 relocation. */
3628 case R_PPC_EMB_SDA2I16:
3631 bad_shared_reloc (abfd, r_type);
3634 if (htab->sdata[1].section == NULL
3635 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3638 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3643 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3644 h->non_got_ref = TRUE;
3648 case R_PPC_SDAREL16:
3649 if (htab->sdata[0].sym == NULL
3650 && !create_sdata_sym (info, &htab->sdata[0]))
3654 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3655 h->non_got_ref = TRUE;
3659 case R_PPC_EMB_SDA2REL:
3662 bad_shared_reloc (abfd, r_type);
3665 if (htab->sdata[1].sym == NULL
3666 && !create_sdata_sym (info, &htab->sdata[1]))
3670 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3671 h->non_got_ref = TRUE;
3675 case R_PPC_EMB_SDA21:
3676 case R_PPC_EMB_RELSDA:
3679 bad_shared_reloc (abfd, r_type);
3682 if (htab->sdata[0].sym == NULL
3683 && !create_sdata_sym (info, &htab->sdata[0]))
3685 if (htab->sdata[1].sym == NULL
3686 && !create_sdata_sym (info, &htab->sdata[1]))
3690 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3691 h->non_got_ref = TRUE;
3695 case R_PPC_EMB_NADDR32:
3696 case R_PPC_EMB_NADDR16:
3697 case R_PPC_EMB_NADDR16_LO:
3698 case R_PPC_EMB_NADDR16_HI:
3699 case R_PPC_EMB_NADDR16_HA:
3702 bad_shared_reloc (abfd, r_type);
3706 h->non_got_ref = TRUE;
3709 case R_PPC_PLTREL24:
3714 case R_PPC_PLTREL32:
3715 case R_PPC_PLT16_LO:
3716 case R_PPC_PLT16_HI:
3717 case R_PPC_PLT16_HA:
3719 fprintf (stderr, "Reloc requires a PLT entry\n");
3721 /* This symbol requires a procedure linkage table entry. We
3722 actually build the entry in finish_dynamic_symbol,
3723 because this might be a case of linking PIC code without
3724 linking in any dynamic objects, in which case we don't
3725 need to generate a procedure linkage table after all. */
3729 /* It does not make sense to have a procedure linkage
3730 table entry for a local symbol. */
3731 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3735 (long) rel->r_offset,
3736 ppc_elf_howto_table[r_type]->name);
3737 bfd_set_error (bfd_error_bad_value);
3744 if (r_type == R_PPC_PLTREL24)
3746 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3748 addend = rel->r_addend;
3751 if (!update_plt_info (abfd, &h->plt.plist,
3752 addend < 32768 ? NULL : 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_RELAX32PC:
3785 case R_PPC_RELAX32_PLT:
3786 case R_PPC_RELAX32PC_PLT:
3789 /* These should only appear in dynamic objects. */
3791 case R_PPC_GLOB_DAT:
3792 case R_PPC_JMP_SLOT:
3793 case R_PPC_RELATIVE:
3794 case R_PPC_IRELATIVE:
3797 /* These aren't handled yet. We'll report an error later. */
3799 case R_PPC_EMB_RELSEC16:
3800 case R_PPC_EMB_RELST_LO:
3801 case R_PPC_EMB_RELST_HI:
3802 case R_PPC_EMB_RELST_HA:
3803 case R_PPC_EMB_BIT_FLD:
3806 /* This refers only to functions defined in the shared library. */
3807 case R_PPC_LOCAL24PC:
3808 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3810 htab->plt_type = PLT_OLD;
3811 htab->old_bfd = abfd;
3815 /* This relocation describes the C++ object vtable hierarchy.
3816 Reconstruct it for later use during GC. */
3817 case R_PPC_GNU_VTINHERIT:
3818 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3822 /* This relocation describes which C++ vtable entries are actually
3823 used. Record for later use during GC. */
3824 case R_PPC_GNU_VTENTRY:
3825 BFD_ASSERT (h != NULL);
3827 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3831 /* We shouldn't really be seeing these. */
3834 case R_PPC_TPREL16_LO:
3835 case R_PPC_TPREL16_HI:
3836 case R_PPC_TPREL16_HA:
3837 if (!info->executable)
3838 info->flags |= DF_STATIC_TLS;
3842 case R_PPC_DTPMOD32:
3843 case R_PPC_DTPREL32:
3849 && (sec->flags & SEC_CODE) != 0
3851 && htab->plt_type == PLT_UNSET)
3853 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3854 the start of a function, which assembles to a REL32
3855 reference to .got2. If we detect one of these, then
3856 force the old PLT layout because the linker cannot
3857 reliably deduce the GOT pointer value needed for
3860 Elf_Internal_Sym *isym;
3862 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3867 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3870 htab->plt_type = PLT_OLD;
3871 htab->old_bfd = abfd;
3874 if (h == NULL || h == htab->elf.hgot)
3880 case R_PPC_ADDR16_LO:
3881 case R_PPC_ADDR16_HI:
3882 case R_PPC_ADDR16_HA:
3885 if (h != NULL && !info->shared)
3887 /* We may need a plt entry if the symbol turns out to be
3888 a function defined in a dynamic object. */
3889 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3892 /* We may need a copy reloc too. */
3894 h->pointer_equality_needed = 1;
3900 case R_PPC_REL14_BRTAKEN:
3901 case R_PPC_REL14_BRNTAKEN:
3904 if (h == htab->elf.hgot)
3906 if (htab->plt_type == PLT_UNSET)
3908 htab->plt_type = PLT_OLD;
3909 htab->old_bfd = abfd;
3917 case R_PPC_ADDR14_BRTAKEN:
3918 case R_PPC_ADDR14_BRNTAKEN:
3919 if (h != NULL && !info->shared)
3921 /* We may need a plt entry if the symbol turns out to be
3922 a function defined in a dynamic object. */
3924 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3930 /* If we are creating a shared library, and this is a reloc
3931 against a global symbol, or a non PC relative reloc
3932 against a local symbol, then we need to copy the reloc
3933 into the shared library. However, if we are linking with
3934 -Bsymbolic, we do not need to copy a reloc against a
3935 global symbol which is defined in an object we are
3936 including in the link (i.e., DEF_REGULAR is set). At
3937 this point we have not seen all the input files, so it is
3938 possible that DEF_REGULAR is not set now but will be set
3939 later (it is never cleared). In case of a weak definition,
3940 DEF_REGULAR may be cleared later by a strong definition in
3941 a shared library. We account for that possibility below by
3942 storing information in the dyn_relocs field of the hash
3943 table entry. A similar situation occurs when creating
3944 shared libraries and symbol visibility changes render the
3947 If on the other hand, we are creating an executable, we
3948 may need to keep relocations for symbols satisfied by a
3949 dynamic library if we manage to avoid copy relocs for the
3952 && (must_be_dyn_reloc (info, r_type)
3954 && (! info->symbolic
3955 || h->root.type == bfd_link_hash_defweak
3956 || !h->def_regular))))
3957 || (ELIMINATE_COPY_RELOCS
3960 && (h->root.type == bfd_link_hash_defweak
3961 || !h->def_regular)))
3963 struct ppc_elf_dyn_relocs *p;
3964 struct ppc_elf_dyn_relocs **rel_head;
3968 "ppc_elf_check_relocs needs to "
3969 "create relocation for %s\n",
3970 (h && h->root.root.string
3971 ? h->root.root.string : "<unknown>"));
3975 if (htab->elf.dynobj == NULL)
3976 htab->elf.dynobj = abfd;
3978 sreloc = _bfd_elf_make_dynamic_reloc_section
3979 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3985 /* If this is a global symbol, we count the number of
3986 relocations we need for this symbol. */
3989 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
3993 /* Track dynamic relocs needed for local syms too.
3994 We really need local syms available to do this
3998 Elf_Internal_Sym *isym;
4000 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4005 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4009 vpp = &elf_section_data (s)->local_dynrel;
4010 rel_head = (struct ppc_elf_dyn_relocs **) vpp;
4014 if (p == NULL || p->sec != sec)
4016 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4019 p->next = *rel_head;
4027 if (!must_be_dyn_reloc (info, r_type))
4039 /* Merge object attributes from IBFD into OBFD. Raise an error if
4040 there are conflicting attributes. */
4042 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4044 obj_attribute *in_attr, *in_attrs;
4045 obj_attribute *out_attr, *out_attrs;
4047 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4049 /* This is the first object. Copy the attributes. */
4050 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4052 /* Use the Tag_null value to indicate the attributes have been
4054 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4059 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4060 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4062 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4063 non-conflicting ones. */
4064 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4065 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4066 if (in_attr->i != out_attr->i)
4069 if (out_attr->i == 0)
4070 out_attr->i = in_attr->i;
4071 else if (in_attr->i == 0)
4073 else if (out_attr->i == 1 && in_attr->i == 2)
4075 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4076 else if (out_attr->i == 1 && in_attr->i == 3)
4078 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4080 else if (out_attr->i == 3 && in_attr->i == 1)
4082 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4084 else if (out_attr->i == 3 && in_attr->i == 2)
4086 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4088 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4090 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4091 else if (in_attr->i > 3)
4093 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4097 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4101 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4102 merge non-conflicting ones. */
4103 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4104 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4105 if (in_attr->i != out_attr->i)
4107 const char *in_abi = NULL, *out_abi = NULL;
4111 case 1: in_abi = "generic"; break;
4112 case 2: in_abi = "AltiVec"; break;
4113 case 3: in_abi = "SPE"; break;
4116 switch (out_attr->i)
4118 case 1: out_abi = "generic"; break;
4119 case 2: out_abi = "AltiVec"; break;
4120 case 3: out_abi = "SPE"; break;
4124 if (out_attr->i == 0)
4125 out_attr->i = in_attr->i;
4126 else if (in_attr->i == 0)
4128 /* For now, allow generic to transition to AltiVec or SPE
4129 without a warning. If GCC marked files with their stack
4130 alignment and used don't-care markings for files which are
4131 not affected by the vector ABI, we could warn about this
4133 else if (out_attr->i == 1)
4134 out_attr->i = in_attr->i;
4135 else if (in_attr->i == 1)
4137 else if (in_abi == NULL)
4139 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4141 else if (out_abi == NULL)
4143 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4147 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4148 ibfd, obfd, in_abi, out_abi);
4151 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4152 and merge non-conflicting ones. */
4153 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4154 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4155 if (in_attr->i != out_attr->i)
4158 if (out_attr->i == 0)
4159 out_attr->i = in_attr->i;
4160 else if (in_attr->i == 0)
4162 else if (out_attr->i == 1 && in_attr->i == 2)
4164 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4165 else if (out_attr->i == 2 && in_attr->i == 1)
4167 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4168 else if (in_attr->i > 2)
4170 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4174 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4178 /* Merge Tag_compatibility attributes and any common GNU ones. */
4179 _bfd_elf_merge_object_attributes (ibfd, obfd);
4184 /* Merge backend specific data from an object file to the output
4185 object file when linking. */
4188 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4194 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4197 /* Check if we have the same endianess. */
4198 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4201 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4204 new_flags = elf_elfheader (ibfd)->e_flags;
4205 old_flags = elf_elfheader (obfd)->e_flags;
4206 if (!elf_flags_init (obfd))
4208 /* First call, no flags set. */
4209 elf_flags_init (obfd) = TRUE;
4210 elf_elfheader (obfd)->e_flags = new_flags;
4213 /* Compatible flags are ok. */
4214 else if (new_flags == old_flags)
4217 /* Incompatible flags. */
4220 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4221 to be linked with either. */
4223 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4224 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4227 (*_bfd_error_handler)
4228 (_("%B: compiled with -mrelocatable and linked with "
4229 "modules compiled normally"), ibfd);
4231 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4232 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4235 (*_bfd_error_handler)
4236 (_("%B: compiled normally and linked with "
4237 "modules compiled with -mrelocatable"), ibfd);
4240 /* The output is -mrelocatable-lib iff both the input files are. */
4241 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4242 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4244 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4245 but each input file is either -mrelocatable or -mrelocatable-lib. */
4246 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4247 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4248 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4249 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4251 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4252 any module uses it. */
4253 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4255 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4256 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4258 /* Warn about any other mismatches. */
4259 if (new_flags != old_flags)
4262 (*_bfd_error_handler)
4263 (_("%B: uses different e_flags (0x%lx) fields "
4264 "than previous modules (0x%lx)"),
4265 ibfd, (long) new_flags, (long) old_flags);
4270 bfd_set_error (bfd_error_bad_value);
4278 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4279 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4281 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4282 struct bfd_link_info *info,
4283 enum ppc_elf_plt_type plt_style,
4286 struct ppc_elf_link_hash_table *htab;
4289 htab = ppc_elf_hash_table (info);
4291 htab->emit_stub_syms = emit_stub_syms;
4293 if (htab->plt_type == PLT_UNSET)
4295 if (plt_style == PLT_OLD)
4296 htab->plt_type = PLT_OLD;
4300 enum ppc_elf_plt_type plt_type = plt_style;
4302 /* Look through the reloc flags left by ppc_elf_check_relocs.
4303 Use the old style bss plt if a file makes plt calls
4304 without using the new relocs, and if ld isn't given
4305 --secure-plt and we never see REL16 relocs. */
4306 if (plt_type == PLT_UNSET)
4308 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4309 if (is_ppc_elf (ibfd))
4311 if (ppc_elf_tdata (ibfd)->has_rel16)
4313 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4316 htab->old_bfd = ibfd;
4320 htab->plt_type = plt_type;
4323 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4324 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
4326 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4328 if (htab->plt_type == PLT_NEW)
4330 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4331 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4333 /* The new PLT is a loaded section. */
4334 if (htab->plt != NULL
4335 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4338 /* The new GOT is not executable. */
4339 if (htab->got != NULL
4340 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4345 /* Stop an unused .glink section from affecting .text alignment. */
4346 if (htab->glink != NULL
4347 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4350 return htab->plt_type == PLT_NEW;
4353 /* Return the section that should be marked against GC for a given
4357 ppc_elf_gc_mark_hook (asection *sec,
4358 struct bfd_link_info *info,
4359 Elf_Internal_Rela *rel,
4360 struct elf_link_hash_entry *h,
4361 Elf_Internal_Sym *sym)
4364 switch (ELF32_R_TYPE (rel->r_info))
4366 case R_PPC_GNU_VTINHERIT:
4367 case R_PPC_GNU_VTENTRY:
4371 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4374 /* Update the got, plt and dynamic reloc reference counts for the
4375 section being removed. */
4378 ppc_elf_gc_sweep_hook (bfd *abfd,
4379 struct bfd_link_info *info,
4381 const Elf_Internal_Rela *relocs)
4383 struct ppc_elf_link_hash_table *htab;
4384 Elf_Internal_Shdr *symtab_hdr;
4385 struct elf_link_hash_entry **sym_hashes;
4386 bfd_signed_vma *local_got_refcounts;
4387 const Elf_Internal_Rela *rel, *relend;
4390 if (info->relocatable)
4393 if ((sec->flags & SEC_ALLOC) == 0)
4396 elf_section_data (sec)->local_dynrel = NULL;
4398 htab = ppc_elf_hash_table (info);
4399 symtab_hdr = &elf_symtab_hdr (abfd);
4400 sym_hashes = elf_sym_hashes (abfd);
4401 local_got_refcounts = elf_local_got_refcounts (abfd);
4402 got2 = bfd_get_section_by_name (abfd, ".got2");
4404 relend = relocs + sec->reloc_count;
4405 for (rel = relocs; rel < relend; rel++)
4407 unsigned long r_symndx;
4408 enum elf_ppc_reloc_type r_type;
4409 struct elf_link_hash_entry *h = NULL;
4411 r_symndx = ELF32_R_SYM (rel->r_info);
4412 if (r_symndx >= symtab_hdr->sh_info)
4414 struct ppc_elf_dyn_relocs **pp, *p;
4415 struct ppc_elf_link_hash_entry *eh;
4417 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4418 while (h->root.type == bfd_link_hash_indirect
4419 || h->root.type == bfd_link_hash_warning)
4420 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4421 eh = (struct ppc_elf_link_hash_entry *) h;
4423 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4426 /* Everything must go for SEC. */
4432 r_type = ELF32_R_TYPE (rel->r_info);
4433 if (!htab->is_vxworks
4435 && local_got_refcounts != NULL
4437 || is_branch_reloc (r_type)))
4439 struct plt_entry **local_plt = (struct plt_entry **)
4440 (local_got_refcounts + symtab_hdr->sh_info);
4441 char *local_got_tls_masks = (char *)
4442 (local_plt + symtab_hdr->sh_info);
4443 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4445 struct plt_entry **ifunc = local_plt + r_symndx;
4447 struct plt_entry *ent;
4449 if (r_type == R_PPC_PLTREL24 && info->shared)
4450 addend = rel->r_addend;
4451 ent = find_plt_ent (ifunc, got2, addend);
4452 if (ent->plt.refcount > 0)
4453 ent->plt.refcount -= 1;
4460 case R_PPC_GOT_TLSLD16:
4461 case R_PPC_GOT_TLSLD16_LO:
4462 case R_PPC_GOT_TLSLD16_HI:
4463 case R_PPC_GOT_TLSLD16_HA:
4464 case R_PPC_GOT_TLSGD16:
4465 case R_PPC_GOT_TLSGD16_LO:
4466 case R_PPC_GOT_TLSGD16_HI:
4467 case R_PPC_GOT_TLSGD16_HA:
4468 case R_PPC_GOT_TPREL16:
4469 case R_PPC_GOT_TPREL16_LO:
4470 case R_PPC_GOT_TPREL16_HI:
4471 case R_PPC_GOT_TPREL16_HA:
4472 case R_PPC_GOT_DTPREL16:
4473 case R_PPC_GOT_DTPREL16_LO:
4474 case R_PPC_GOT_DTPREL16_HI:
4475 case R_PPC_GOT_DTPREL16_HA:
4477 case R_PPC_GOT16_LO:
4478 case R_PPC_GOT16_HI:
4479 case R_PPC_GOT16_HA:
4482 if (h->got.refcount > 0)
4486 struct plt_entry *ent;
4488 ent = find_plt_ent (&h->plt.plist, NULL, 0);
4489 if (ent->plt.refcount > 0)
4490 ent->plt.refcount -= 1;
4493 else if (local_got_refcounts != NULL)
4495 if (local_got_refcounts[r_symndx] > 0)
4496 local_got_refcounts[r_symndx]--;
4502 case R_PPC_REL14_BRTAKEN:
4503 case R_PPC_REL14_BRNTAKEN:
4505 if (h == NULL || h == htab->elf.hgot)
4512 case R_PPC_ADDR16_LO:
4513 case R_PPC_ADDR16_HI:
4514 case R_PPC_ADDR16_HA:
4516 case R_PPC_ADDR14_BRTAKEN:
4517 case R_PPC_ADDR14_BRNTAKEN:
4524 case R_PPC_PLTREL24:
4525 case R_PPC_PLTREL32:
4526 case R_PPC_PLT16_LO:
4527 case R_PPC_PLT16_HI:
4528 case R_PPC_PLT16_HA:
4532 struct plt_entry *ent;
4534 if (r_type == R_PPC_PLTREL24 && info->shared)
4535 addend = rel->r_addend;
4536 ent = find_plt_ent (&h->plt.plist, got2, addend);
4537 if (ent->plt.refcount > 0)
4538 ent->plt.refcount -= 1;
4549 /* Set plt output section type, htab->tls_get_addr, and call the
4550 generic ELF tls_setup function. */
4553 ppc_elf_tls_setup (bfd *obfd,
4554 struct bfd_link_info *info,
4555 int no_tls_get_addr_opt)
4557 struct ppc_elf_link_hash_table *htab;
4559 htab = ppc_elf_hash_table (info);
4560 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4561 FALSE, FALSE, TRUE);
4562 if (!no_tls_get_addr_opt)
4564 struct elf_link_hash_entry *opt, *tga;
4565 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
4566 FALSE, FALSE, TRUE);
4568 && (opt->root.type == bfd_link_hash_defined
4569 || opt->root.type == bfd_link_hash_defweak))
4571 /* If glibc supports an optimized __tls_get_addr call stub,
4572 signalled by the presence of __tls_get_addr_opt, and we'll
4573 be calling __tls_get_addr via a plt call stub, then
4574 make __tls_get_addr point to __tls_get_addr_opt. */
4575 tga = htab->tls_get_addr;
4576 if (htab->elf.dynamic_sections_created
4578 && (tga->type == STT_FUNC
4580 && !(SYMBOL_CALLS_LOCAL (info, tga)
4581 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
4582 && tga->root.type == bfd_link_hash_undefweak)))
4584 struct plt_entry *ent;
4585 ent = find_plt_ent (&tga->plt.plist, NULL, 0);
4587 && 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);
4673 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4674 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4676 Elf_Internal_Rela *relstart, *rel, *relend;
4678 /* Read the relocations. */
4679 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4681 if (relstart == NULL)
4684 relend = relstart + sec->reloc_count;
4685 for (rel = relstart; rel < relend; rel++)
4687 enum elf_ppc_reloc_type r_type;
4688 unsigned long r_symndx;
4689 struct elf_link_hash_entry *h = NULL;
4691 char tls_set, tls_clear;
4692 bfd_boolean is_local;
4693 int expecting_tls_get_addr;
4694 bfd_signed_vma *got_count;
4696 r_symndx = ELF32_R_SYM (rel->r_info);
4697 if (r_symndx >= symtab_hdr->sh_info)
4699 struct elf_link_hash_entry **sym_hashes;
4701 sym_hashes = elf_sym_hashes (ibfd);
4702 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4703 while (h->root.type == bfd_link_hash_indirect
4704 || h->root.type == bfd_link_hash_warning)
4705 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4708 expecting_tls_get_addr = 0;
4714 r_type = ELF32_R_TYPE (rel->r_info);
4717 case R_PPC_GOT_TLSLD16:
4718 case R_PPC_GOT_TLSLD16_LO:
4719 expecting_tls_get_addr = 1;
4722 case R_PPC_GOT_TLSLD16_HI:
4723 case R_PPC_GOT_TLSLD16_HA:
4724 /* These relocs should never be against a symbol
4725 defined in a shared lib. Leave them alone if
4726 that turns out to be the case. */
4735 case R_PPC_GOT_TLSGD16:
4736 case R_PPC_GOT_TLSGD16_LO:
4737 expecting_tls_get_addr = 1;
4740 case R_PPC_GOT_TLSGD16_HI:
4741 case R_PPC_GOT_TLSGD16_HA:
4747 tls_set = TLS_TLS | TLS_TPRELGD;
4751 case R_PPC_GOT_TPREL16:
4752 case R_PPC_GOT_TPREL16_LO:
4753 case R_PPC_GOT_TPREL16_HI:
4754 case R_PPC_GOT_TPREL16_HA:
4759 tls_clear = TLS_TPREL;
4771 if (!expecting_tls_get_addr
4772 || !sec->has_tls_get_addr_call)
4775 if (rel + 1 < relend
4776 && branch_reloc_hash_match (ibfd, rel + 1,
4777 htab->tls_get_addr))
4780 /* Uh oh, we didn't find the expected call. We
4781 could just mark this symbol to exclude it
4782 from tls optimization but it's safer to skip
4783 the entire section. */
4784 sec->has_tls_reloc = 0;
4790 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4791 got_count = &h->got.refcount;
4795 Elf_Internal_Sym *sym;
4796 bfd_signed_vma *lgot_refs;
4797 struct plt_entry **local_plt;
4800 if (locsyms == NULL)
4802 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4803 if (locsyms == NULL)
4804 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4805 symtab_hdr->sh_info,
4806 0, NULL, NULL, NULL);
4807 if (locsyms == NULL)
4809 if (elf_section_data (sec)->relocs != relstart)
4814 sym = locsyms + r_symndx;
4815 lgot_refs = elf_local_got_refcounts (ibfd);
4816 if (lgot_refs == NULL)
4818 local_plt = (struct plt_entry **)
4819 (lgot_refs + symtab_hdr->sh_info);
4820 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
4821 tls_mask = &lgot_masks[r_symndx];
4822 got_count = &lgot_refs[r_symndx];
4827 /* We managed to get rid of a got entry. */
4832 if (expecting_tls_get_addr)
4834 struct plt_entry *ent;
4836 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4838 if (ent != NULL && ent->plt.refcount > 0)
4839 ent->plt.refcount -= 1;
4842 *tls_mask |= tls_set;
4843 *tls_mask &= ~tls_clear;
4846 if (elf_section_data (sec)->relocs != relstart)
4851 && (symtab_hdr->contents != (unsigned char *) locsyms))
4853 if (!info->keep_memory)
4856 symtab_hdr->contents = (unsigned char *) locsyms;
4862 /* Return true if we have dynamic relocs that apply to read-only sections. */
4865 readonly_dynrelocs (struct elf_link_hash_entry *h)
4867 struct ppc_elf_dyn_relocs *p;
4869 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4871 asection *s = p->sec->output_section;
4874 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4875 == (SEC_READONLY | SEC_ALLOC)))
4881 /* Adjust a symbol defined by a dynamic object and referenced by a
4882 regular object. The current definition is in some section of the
4883 dynamic object, but we're not including those sections. We have to
4884 change the definition to something the rest of the link can
4888 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4889 struct elf_link_hash_entry *h)
4891 struct ppc_elf_link_hash_table *htab;
4895 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4896 h->root.root.string);
4899 /* Make sure we know what is going on here. */
4900 htab = ppc_elf_hash_table (info);
4901 BFD_ASSERT (htab->elf.dynobj != NULL
4903 || h->type == STT_GNU_IFUNC
4904 || h->u.weakdef != NULL
4907 && !h->def_regular)));
4909 /* Deal with function syms. */
4910 if (h->type == STT_FUNC
4911 || h->type == STT_GNU_IFUNC
4914 /* Clear procedure linkage table information for any symbol that
4915 won't need a .plt entry. */
4916 struct plt_entry *ent;
4917 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4918 if (ent->plt.refcount > 0)
4921 || (h->type != STT_GNU_IFUNC
4922 && (SYMBOL_CALLS_LOCAL (info, h)
4923 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4924 && h->root.type == bfd_link_hash_undefweak))))
4926 /* A PLT entry is not required/allowed when:
4928 1. We are not using ld.so; because then the PLT entry
4929 can't be set up, so we can't use one. In this case,
4930 ppc_elf_adjust_dynamic_symbol won't even be called.
4932 2. GC has rendered the entry unused.
4934 3. We know for certain that a call to this symbol
4935 will go to this object, or will remain undefined. */
4936 h->plt.plist = NULL;
4941 /* After adjust_dynamic_symbol, non_got_ref set in the
4942 non-shared case means that we have allocated space in
4943 .dynbss for the symbol and thus dyn_relocs for this
4944 symbol should be discarded.
4945 If we get here we know we are making a PLT entry for this
4946 symbol, and in an executable we'd normally resolve
4947 relocations against this symbol to the PLT entry. Allow
4948 dynamic relocs if the reference is weak, and the dynamic
4949 relocs will not cause text relocation. */
4950 if (!h->ref_regular_nonweak
4952 && h->type != STT_GNU_IFUNC
4953 && !htab->is_vxworks
4954 && !ppc_elf_hash_entry (h)->has_sda_refs
4955 && !readonly_dynrelocs (h))
4961 h->plt.plist = NULL;
4963 /* If this is a weak symbol, and there is a real definition, the
4964 processor independent code will have arranged for us to see the
4965 real definition first, and we can just use the same value. */
4966 if (h->u.weakdef != NULL)
4968 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4969 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4970 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4971 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4972 if (ELIMINATE_COPY_RELOCS)
4973 h->non_got_ref = h->u.weakdef->non_got_ref;
4977 /* This is a reference to a symbol defined by a dynamic object which
4978 is not a function. */
4980 /* If we are creating a shared library, we must presume that the
4981 only references to the symbol are via the global offset table.
4982 For such cases we need not do anything here; the relocations will
4983 be handled correctly by relocate_section. */
4987 /* If there are no references to this symbol that do not use the
4988 GOT, we don't need to generate a copy reloc. */
4989 if (!h->non_got_ref)
4992 /* If we didn't find any dynamic relocs in read-only sections, then
4993 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4994 We can't do this if there are any small data relocations. This
4995 doesn't work on VxWorks, where we can not have dynamic
4996 relocations (other than copy and jump slot relocations) in an
4998 if (ELIMINATE_COPY_RELOCS
4999 && !ppc_elf_hash_entry (h)->has_sda_refs
5000 && !htab->is_vxworks
5002 && !readonly_dynrelocs (h))
5010 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5011 h->root.root.string);
5015 /* We must allocate the symbol in our .dynbss section, which will
5016 become part of the .bss section of the executable. There will be
5017 an entry for this symbol in the .dynsym section. The dynamic
5018 object will contain position independent code, so all references
5019 from the dynamic object to this symbol will go through the global
5020 offset table. The dynamic linker will use the .dynsym entry to
5021 determine the address it must put in the global offset table, so
5022 both the dynamic object and the regular object will refer to the
5023 same memory location for the variable.
5025 Of course, if the symbol is referenced using SDAREL relocs, we
5026 must instead allocate it in .sbss. */
5028 if (ppc_elf_hash_entry (h)->has_sda_refs)
5032 BFD_ASSERT (s != NULL);
5034 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5035 copy the initial value out of the dynamic object and into the
5036 runtime process image. We need to remember the offset into the
5037 .rela.bss section we are going to use. */
5038 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5042 if (ppc_elf_hash_entry (h)->has_sda_refs)
5043 srel = htab->relsbss;
5045 srel = htab->relbss;
5046 BFD_ASSERT (srel != NULL);
5047 srel->size += sizeof (Elf32_External_Rela);
5051 return _bfd_elf_adjust_dynamic_copy (h, s);
5054 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5055 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5056 specifying the addend on the plt relocation. For -fpic code, the sym
5057 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5058 xxxxxxxx.got2.plt_pic32.<callee>. */
5061 add_stub_sym (struct plt_entry *ent,
5062 struct elf_link_hash_entry *h,
5063 struct bfd_link_info *info)
5065 struct elf_link_hash_entry *sh;
5066 size_t len1, len2, len3;
5069 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5072 stub = ".plt_pic32.";
5074 stub = ".plt_call32.";
5076 len1 = strlen (h->root.root.string);
5077 len2 = strlen (stub);
5080 len3 = strlen (ent->sec->name);
5081 name = bfd_malloc (len1 + len2 + len3 + 9);
5084 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5086 memcpy (name + 8, ent->sec->name, len3);
5087 memcpy (name + 8 + len3, stub, len2);
5088 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5089 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5092 if (sh->root.type == bfd_link_hash_new)
5094 sh->root.type = bfd_link_hash_defined;
5095 sh->root.u.def.section = htab->glink;
5096 sh->root.u.def.value = ent->glink_offset;
5097 sh->ref_regular = 1;
5098 sh->def_regular = 1;
5099 sh->ref_regular_nonweak = 1;
5100 sh->forced_local = 1;
5106 /* Allocate NEED contiguous space in .got, and return the offset.
5107 Handles allocation of the got header when crossing 32k. */
5110 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5113 unsigned int max_before_header;
5115 if (htab->plt_type == PLT_VXWORKS)
5117 where = htab->got->size;
5118 htab->got->size += need;
5122 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5123 if (need <= htab->got_gap)
5125 where = max_before_header - htab->got_gap;
5126 htab->got_gap -= need;
5130 if (htab->got->size + need > max_before_header
5131 && htab->got->size <= max_before_header)
5133 htab->got_gap = max_before_header - htab->got->size;
5134 htab->got->size = max_before_header + htab->got_header_size;
5136 where = htab->got->size;
5137 htab->got->size += need;
5143 /* Allocate space in associated reloc sections for dynamic relocs. */
5146 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5148 struct bfd_link_info *info = inf;
5149 struct ppc_elf_link_hash_entry *eh;
5150 struct ppc_elf_link_hash_table *htab;
5151 struct ppc_elf_dyn_relocs *p;
5153 if (h->root.type == bfd_link_hash_indirect)
5156 if (h->root.type == bfd_link_hash_warning)
5157 /* When warning symbols are created, they **replace** the "real"
5158 entry in the hash table, thus we never get to see the real
5159 symbol in a hash traversal. So look at it now. */
5160 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5162 htab = ppc_elf_hash_table (info);
5163 if (htab->elf.dynamic_sections_created
5164 || h->type == STT_GNU_IFUNC)
5166 struct plt_entry *ent;
5167 bfd_boolean doneone = FALSE;
5168 bfd_vma plt_offset = 0, glink_offset = 0;
5171 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5172 if (ent->plt.refcount > 0)
5174 /* Make sure this symbol is output as a dynamic symbol. */
5175 if (h->dynindx == -1
5178 && htab->elf.dynamic_sections_created)
5180 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5184 dyn = htab->elf.dynamic_sections_created;
5186 || h->type == STT_GNU_IFUNC
5187 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5189 asection *s = htab->plt;
5190 if (!dyn || h->dynindx == -1)
5193 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5197 plt_offset = s->size;
5200 ent->plt.offset = plt_offset;
5203 if (!doneone || info->shared)
5205 glink_offset = s->size;
5206 s->size += GLINK_ENTRY_SIZE;
5207 if (h == htab->tls_get_addr
5208 && !htab->no_tls_get_addr_opt)
5209 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5216 h->root.u.def.section = s;
5217 h->root.u.def.value = glink_offset;
5219 ent->glink_offset = glink_offset;
5221 if (htab->emit_stub_syms
5222 && !add_stub_sym (ent, h, info))
5229 /* If this is the first .plt entry, make room
5230 for the special first entry. */
5232 s->size += htab->plt_initial_entry_size;
5234 /* The PowerPC PLT is actually composed of two
5235 parts, the first part is 2 words (for a load
5236 and a jump), and then there is a remaining
5237 word available at the end. */
5238 plt_offset = (htab->plt_initial_entry_size
5239 + (htab->plt_slot_size
5241 - htab->plt_initial_entry_size)
5242 / htab->plt_entry_size)));
5244 /* If this symbol is not defined in a regular
5245 file, and we are not generating a shared
5246 library, then set the symbol to this location
5247 in the .plt. This is to avoid text
5248 relocations, and is required to make
5249 function pointers compare as equal between
5250 the normal executable and the shared library. */
5255 h->root.u.def.section = s;
5256 h->root.u.def.value = plt_offset;
5259 /* Make room for this entry. */
5260 s->size += htab->plt_entry_size;
5261 /* After the 8192nd entry, room for two entries
5263 if (htab->plt_type == PLT_OLD
5264 && (s->size - htab->plt_initial_entry_size)
5265 / htab->plt_entry_size
5266 > PLT_NUM_SINGLE_ENTRIES)
5267 s->size += htab->plt_entry_size;
5269 ent->plt.offset = plt_offset;
5272 /* We also need to make an entry in the .rela.plt section. */
5275 if (!htab->elf.dynamic_sections_created
5276 || h->dynindx == -1)
5277 htab->reliplt->size += sizeof (Elf32_External_Rela);
5280 htab->relplt->size += sizeof (Elf32_External_Rela);
5282 if (htab->plt_type == PLT_VXWORKS)
5284 /* Allocate space for the unloaded relocations. */
5286 && htab->elf.dynamic_sections_created)
5289 == (bfd_vma) htab->plt_initial_entry_size)
5291 htab->srelplt2->size
5292 += (sizeof (Elf32_External_Rela)
5293 * VXWORKS_PLTRESOLVE_RELOCS);
5296 htab->srelplt2->size
5297 += (sizeof (Elf32_External_Rela)
5298 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5301 /* Every PLT entry has an associated GOT entry in
5303 htab->sgotplt->size += 4;
5310 ent->plt.offset = (bfd_vma) -1;
5313 ent->plt.offset = (bfd_vma) -1;
5317 h->plt.plist = NULL;
5323 h->plt.plist = NULL;
5327 eh = (struct ppc_elf_link_hash_entry *) h;
5328 if (eh->elf.got.refcount > 0)
5333 /* Make sure this symbol is output as a dynamic symbol. */
5334 if (eh->elf.dynindx == -1
5335 && !eh->elf.forced_local
5336 && eh->elf.type != STT_GNU_IFUNC
5337 && htab->elf.dynamic_sections_created)
5339 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5344 if ((eh->tls_mask & TLS_TLS) != 0)
5346 if ((eh->tls_mask & TLS_LD) != 0)
5348 if (!eh->elf.def_dynamic)
5349 /* We'll just use htab->tlsld_got.offset. This should
5350 always be the case. It's a little odd if we have
5351 a local dynamic reloc against a non-local symbol. */
5352 htab->tlsld_got.refcount += 1;
5356 if ((eh->tls_mask & TLS_GD) != 0)
5358 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5360 if ((eh->tls_mask & TLS_DTPREL) != 0)
5366 eh->elf.got.offset = (bfd_vma) -1;
5369 eh->elf.got.offset = allocate_got (htab, need);
5370 dyn = htab->elf.dynamic_sections_created;
5372 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5373 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5374 || eh->elf.root.type != bfd_link_hash_undefweak))
5376 asection *rsec = htab->relgot;
5377 /* All the entries we allocated need relocs.
5378 Except LD only needs one. */
5379 if ((eh->tls_mask & TLS_LD) != 0
5380 && eh->elf.def_dynamic)
5382 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5387 eh->elf.got.offset = (bfd_vma) -1;
5389 if (eh->dyn_relocs == NULL
5390 || !htab->elf.dynamic_sections_created)
5393 /* In the shared -Bsymbolic case, discard space allocated for
5394 dynamic pc-relative relocs against symbols which turn out to be
5395 defined in regular objects. For the normal shared case, discard
5396 space for relocs that have become local due to symbol visibility
5401 /* Relocs that use pc_count are those that appear on a call insn,
5402 or certain REL relocs (see must_be_dyn_reloc) that can be
5403 generated via assembly. We want calls to protected symbols to
5404 resolve directly to the function rather than going via the plt.
5405 If people want function pointer comparisons to work as expected
5406 then they should avoid writing weird assembly. */
5407 if (SYMBOL_CALLS_LOCAL (info, h))
5409 struct ppc_elf_dyn_relocs **pp;
5411 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5413 p->count -= p->pc_count;
5422 if (htab->is_vxworks)
5424 struct ppc_elf_dyn_relocs **pp;
5426 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5428 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5435 /* Discard relocs on undefined symbols that must be local. */
5436 if (eh->dyn_relocs != NULL
5437 && h->root.type == bfd_link_hash_undefined
5438 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5439 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5440 eh->dyn_relocs = NULL;
5442 /* Also discard relocs on undefined weak syms with non-default
5444 if (eh->dyn_relocs != NULL
5445 && h->root.type == bfd_link_hash_undefweak)
5447 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5448 eh->dyn_relocs = NULL;
5450 /* Make sure undefined weak symbols are output as a dynamic
5452 else if (h->dynindx == -1
5456 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5461 else if (ELIMINATE_COPY_RELOCS)
5463 /* For the non-shared case, discard space for relocs against
5464 symbols which turn out to need copy relocs or are not
5470 /* Make sure this symbol is output as a dynamic symbol.
5471 Undefined weak syms won't yet be marked as dynamic. */
5472 if (h->dynindx == -1
5473 && !h->forced_local)
5475 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5479 /* If that succeeded, we know we'll be keeping all the
5481 if (h->dynindx != -1)
5485 eh->dyn_relocs = NULL;
5490 /* Finally, allocate space. */
5491 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5493 asection *sreloc = elf_section_data (p->sec)->sreloc;
5494 if (!htab->elf.dynamic_sections_created)
5495 sreloc = htab->reliplt;
5496 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5502 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5503 read-only sections. */
5506 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5508 if (h->root.type == bfd_link_hash_indirect)
5511 if (h->root.type == bfd_link_hash_warning)
5512 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5514 if (readonly_dynrelocs (h))
5516 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5518 /* Not an error, just cut short the traversal. */
5524 /* Set the sizes of the dynamic sections. */
5527 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5528 struct bfd_link_info *info)
5530 struct ppc_elf_link_hash_table *htab;
5536 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5539 htab = ppc_elf_hash_table (info);
5540 BFD_ASSERT (htab->elf.dynobj != NULL);
5542 if (elf_hash_table (info)->dynamic_sections_created)
5544 /* Set the contents of the .interp section to the interpreter. */
5545 if (info->executable)
5547 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5548 BFD_ASSERT (s != NULL);
5549 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5550 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5554 if (htab->plt_type == PLT_OLD)
5555 htab->got_header_size = 16;
5556 else if (htab->plt_type == PLT_NEW)
5557 htab->got_header_size = 12;
5559 /* Set up .got offsets for local syms, and space for local dynamic
5561 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5563 bfd_signed_vma *local_got;
5564 bfd_signed_vma *end_local_got;
5565 struct plt_entry **local_plt;
5566 struct plt_entry **end_local_plt;
5568 bfd_size_type locsymcount;
5569 Elf_Internal_Shdr *symtab_hdr;
5571 if (!is_ppc_elf (ibfd))
5574 for (s = ibfd->sections; s != NULL; s = s->next)
5576 struct ppc_elf_dyn_relocs *p;
5578 for (p = ((struct ppc_elf_dyn_relocs *)
5579 elf_section_data (s)->local_dynrel);
5583 if (!bfd_is_abs_section (p->sec)
5584 && bfd_is_abs_section (p->sec->output_section))
5586 /* Input section has been discarded, either because
5587 it is a copy of a linkonce section or due to
5588 linker script /DISCARD/, so we'll be discarding
5591 else if (htab->is_vxworks
5592 && strcmp (p->sec->output_section->name,
5595 /* Relocations in vxworks .tls_vars sections are
5596 handled specially by the loader. */
5598 else if (p->count != 0)
5600 asection *sreloc = elf_section_data (p->sec)->sreloc;
5601 if (!htab->elf.dynamic_sections_created)
5602 sreloc = htab->reliplt;
5603 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5604 if ((p->sec->output_section->flags
5605 & (SEC_READONLY | SEC_ALLOC))
5606 == (SEC_READONLY | SEC_ALLOC))
5607 info->flags |= DF_TEXTREL;
5612 local_got = elf_local_got_refcounts (ibfd);
5616 symtab_hdr = &elf_symtab_hdr (ibfd);
5617 locsymcount = symtab_hdr->sh_info;
5618 end_local_got = local_got + locsymcount;
5619 local_plt = (struct plt_entry **) end_local_got;
5620 end_local_plt = local_plt + locsymcount;
5621 lgot_masks = (char *) end_local_plt;
5623 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5626 unsigned int need = 0;
5627 if ((*lgot_masks & TLS_TLS) != 0)
5629 if ((*lgot_masks & TLS_GD) != 0)
5631 if ((*lgot_masks & TLS_LD) != 0)
5632 htab->tlsld_got.refcount += 1;
5633 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5635 if ((*lgot_masks & TLS_DTPREL) != 0)
5641 *local_got = (bfd_vma) -1;
5644 *local_got = allocate_got (htab, need);
5646 htab->relgot->size += (need
5647 * (sizeof (Elf32_External_Rela) / 4));
5651 *local_got = (bfd_vma) -1;
5653 if (htab->is_vxworks)
5656 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5657 for (; local_plt < end_local_plt; ++local_plt)
5659 struct plt_entry *ent;
5660 bfd_boolean doneone = FALSE;
5661 bfd_vma plt_offset = 0, glink_offset = 0;
5663 for (ent = *local_plt; ent != NULL; ent = ent->next)
5664 if (ent->plt.refcount > 0)
5670 plt_offset = s->size;
5673 ent->plt.offset = plt_offset;
5676 if (!doneone || info->shared)
5678 glink_offset = s->size;
5679 s->size += GLINK_ENTRY_SIZE;
5681 ent->glink_offset = glink_offset;
5685 htab->reliplt->size += sizeof (Elf32_External_Rela);
5690 ent->plt.offset = (bfd_vma) -1;
5694 /* Allocate space for global sym dynamic relocs. */
5695 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5697 if (htab->tlsld_got.refcount > 0)
5699 htab->tlsld_got.offset = allocate_got (htab, 8);
5701 htab->relgot->size += sizeof (Elf32_External_Rela);
5704 htab->tlsld_got.offset = (bfd_vma) -1;
5706 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5708 unsigned int g_o_t = 32768;
5710 /* If we haven't allocated the header, do so now. When we get here,
5711 for old plt/got the got size will be 0 to 32764 (not allocated),
5712 or 32780 to 65536 (header allocated). For new plt/got, the
5713 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5714 if (htab->got->size <= 32768)
5716 g_o_t = htab->got->size;
5717 if (htab->plt_type == PLT_OLD)
5719 htab->got->size += htab->got_header_size;
5722 htab->elf.hgot->root.u.def.value = g_o_t;
5726 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
5728 && !(sda->root.type == bfd_link_hash_defined
5729 || sda->root.type == bfd_link_hash_defweak))
5731 sda->root.type = bfd_link_hash_defined;
5732 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
5733 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
5737 if (htab->glink != NULL
5738 && htab->glink->size != 0
5739 && htab->elf.dynamic_sections_created)
5741 htab->glink_pltresolve = htab->glink->size;
5742 /* Space for the branch table. */
5743 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5744 /* Pad out to align the start of PLTresolve. */
5745 htab->glink->size += -htab->glink->size & 15;
5746 htab->glink->size += GLINK_PLTRESOLVE;
5748 if (htab->emit_stub_syms)
5750 struct elf_link_hash_entry *sh;
5751 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5752 TRUE, FALSE, FALSE);
5755 if (sh->root.type == bfd_link_hash_new)
5757 sh->root.type = bfd_link_hash_defined;
5758 sh->root.u.def.section = htab->glink;
5759 sh->root.u.def.value = htab->glink_pltresolve;
5760 sh->ref_regular = 1;
5761 sh->def_regular = 1;
5762 sh->ref_regular_nonweak = 1;
5763 sh->forced_local = 1;
5766 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5767 TRUE, FALSE, FALSE);
5770 if (sh->root.type == bfd_link_hash_new)
5772 sh->root.type = bfd_link_hash_defined;
5773 sh->root.u.def.section = htab->glink;
5774 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5775 sh->ref_regular = 1;
5776 sh->def_regular = 1;
5777 sh->ref_regular_nonweak = 1;
5778 sh->forced_local = 1;
5784 /* We've now determined the sizes of the various dynamic sections.
5785 Allocate memory for them. */
5787 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5789 bfd_boolean strip_section = TRUE;
5791 if ((s->flags & SEC_LINKER_CREATED) == 0)
5797 /* We'd like to strip these sections if they aren't needed, but if
5798 we've exported dynamic symbols from them we must leave them.
5799 It's too late to tell BFD to get rid of the symbols. */
5800 if (htab->elf.hplt != NULL)
5801 strip_section = FALSE;
5802 /* Strip this section if we don't need it; see the
5805 else if (s == htab->iplt
5807 || s == htab->sgotplt
5809 || s == htab->dynbss
5810 || s == htab->dynsbss
5811 || s == htab->sdata[0].section
5812 || s == htab->sdata[1].section)
5814 /* Strip these too. */
5816 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5820 /* Remember whether there are any relocation sections. */
5823 /* We use the reloc_count field as a counter if we need
5824 to copy relocs into the output file. */
5830 /* It's not one of our sections, so don't allocate space. */
5834 if (s->size == 0 && strip_section)
5836 /* If we don't need this section, strip it from the
5837 output file. This is mostly to handle .rela.bss and
5838 .rela.plt. We must create both sections in
5839 create_dynamic_sections, because they must be created
5840 before the linker maps input sections to output
5841 sections. The linker does that before
5842 adjust_dynamic_symbol is called, and it is that
5843 function which decides whether anything needs to go
5844 into these sections. */
5845 s->flags |= SEC_EXCLUDE;
5849 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5852 /* Allocate memory for the section contents. */
5853 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5854 if (s->contents == NULL)
5858 if (htab->elf.dynamic_sections_created)
5860 /* Add some entries to the .dynamic section. We fill in the
5861 values later, in ppc_elf_finish_dynamic_sections, but we
5862 must add the entries now so that we get the correct size for
5863 the .dynamic section. The DT_DEBUG entry is filled in by the
5864 dynamic linker and used by the debugger. */
5865 #define add_dynamic_entry(TAG, VAL) \
5866 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5868 if (info->executable)
5870 if (!add_dynamic_entry (DT_DEBUG, 0))
5874 if (htab->plt != NULL && htab->plt->size != 0)
5876 if (!add_dynamic_entry (DT_PLTGOT, 0)
5877 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5878 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5879 || !add_dynamic_entry (DT_JMPREL, 0))
5883 if (htab->glink != NULL && htab->glink->size != 0)
5885 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5887 if (!htab->no_tls_get_addr_opt
5888 && htab->tls_get_addr != NULL
5889 && htab->tls_get_addr->plt.plist != NULL
5890 && !add_dynamic_entry (DT_PPC_TLSOPT, 0))
5896 if (!add_dynamic_entry (DT_RELA, 0)
5897 || !add_dynamic_entry (DT_RELASZ, 0)
5898 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5902 /* If any dynamic relocs apply to a read-only section, then we
5903 need a DT_TEXTREL entry. */
5904 if ((info->flags & DF_TEXTREL) == 0)
5905 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5908 if ((info->flags & DF_TEXTREL) != 0)
5910 if (!add_dynamic_entry (DT_TEXTREL, 0))
5913 if (htab->is_vxworks
5914 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5917 #undef add_dynamic_entry
5922 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5925 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5927 if (h->plt.plist != NULL
5929 && (!h->pointer_equality_needed
5930 || !h->ref_regular_nonweak))
5933 return _bfd_elf_hash_symbol (h);
5936 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5938 /* Relaxation trampolines. r12 is available for clobbering (r11, is
5939 used for some functions that are allowed to break the ABI). */
5940 static const int shared_stub_entry[] =
5942 0x7c0802a6, /* mflr 0 */
5943 0x429f0005, /* bcl 20, 31, .Lxxx */
5944 0x7d8802a6, /* mflr 12 */
5945 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
5946 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
5947 0x7c0803a6, /* mtlr 0 */
5948 0x7d8903a6, /* mtctr 12 */
5949 0x4e800420, /* bctr */
5952 static const int stub_entry[] =
5954 0x3d800000, /* lis 12,xxx@ha */
5955 0x398c0000, /* addi 12,12,xxx@l */
5956 0x7d8903a6, /* mtctr 12 */
5957 0x4e800420, /* bctr */
5961 ppc_elf_relax_section (bfd *abfd,
5963 struct bfd_link_info *link_info,
5968 struct one_fixup *next;
5970 /* Final link, can use the symbol offset. For a
5971 relocatable link we use the symbol's index. */
5976 Elf_Internal_Shdr *symtab_hdr;
5977 bfd_byte *contents = NULL;
5978 Elf_Internal_Sym *isymbuf = NULL;
5979 Elf_Internal_Rela *internal_relocs = NULL;
5980 Elf_Internal_Rela *irel, *irelend;
5981 struct one_fixup *fixups = NULL;
5982 unsigned changes = 0;
5983 struct ppc_elf_link_hash_table *htab;
5984 bfd_size_type trampoff;
5989 /* Nothing to do if there are no relocations, and no need to do
5990 anything with non-alloc or non-code sections. */
5991 if ((isec->flags & SEC_ALLOC) == 0
5992 || (isec->flags & SEC_CODE) == 0
5993 || (isec->flags & SEC_RELOC) == 0
5994 || isec->reloc_count == 0)
5997 /* We cannot represent the required PIC relocs in the output, so don't
5998 do anything. The linker doesn't support mixing -shared and -r
6000 if (link_info->relocatable && link_info->shared)
6003 trampoff = (isec->size + 3) & (bfd_vma) -4;
6004 /* Space for a branch around any trampolines. */
6007 symtab_hdr = &elf_symtab_hdr (abfd);
6009 /* Get a copy of the native relocations. */
6010 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6011 link_info->keep_memory);
6012 if (internal_relocs == NULL)
6015 htab = ppc_elf_hash_table (link_info);
6016 got2 = bfd_get_section_by_name (abfd, ".got2");
6018 irelend = internal_relocs + isec->reloc_count;
6019 for (irel = internal_relocs; irel < irelend; irel++)
6021 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6024 struct one_fixup *f;
6025 size_t insn_offset = 0;
6026 bfd_vma max_branch_offset, val;
6029 struct elf_link_hash_entry *h;
6030 struct plt_entry **plist;
6031 unsigned char sym_type;
6036 case R_PPC_LOCAL24PC:
6037 case R_PPC_PLTREL24:
6038 max_branch_offset = 1 << 25;
6042 case R_PPC_REL14_BRTAKEN:
6043 case R_PPC_REL14_BRNTAKEN:
6044 max_branch_offset = 1 << 15;
6051 /* Get the value of the symbol referred to by the reloc. */
6053 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6055 /* A local symbol. */
6056 Elf_Internal_Sym *isym;
6058 /* Read this BFD's local symbols. */
6059 if (isymbuf == NULL)
6061 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6062 if (isymbuf == NULL)
6063 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6064 symtab_hdr->sh_info, 0,
6069 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6070 if (isym->st_shndx == SHN_UNDEF)
6071 tsec = bfd_und_section_ptr;
6072 else if (isym->st_shndx == SHN_ABS)
6073 tsec = bfd_abs_section_ptr;
6074 else if (isym->st_shndx == SHN_COMMON)
6075 tsec = bfd_com_section_ptr;
6077 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6079 toff = isym->st_value;
6080 sym_type = ELF_ST_TYPE (isym->st_info);
6084 /* Global symbol handling. */
6087 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6088 h = elf_sym_hashes (abfd)[indx];
6090 while (h->root.type == bfd_link_hash_indirect
6091 || h->root.type == bfd_link_hash_warning)
6092 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6094 if (h->root.type == bfd_link_hash_defined
6095 || h->root.type == bfd_link_hash_defweak)
6097 tsec = h->root.u.def.section;
6098 toff = h->root.u.def.value;
6100 else if (h->root.type == bfd_link_hash_undefined
6101 || h->root.type == bfd_link_hash_undefweak)
6103 tsec = bfd_und_section_ptr;
6104 toff = link_info->relocatable ? indx : 0;
6112 /* The condition here under which we call find_plt_ent must
6113 match that in relocate_section. If we call find_plt_ent here
6114 but not in relocate_section, or vice versa, then the branch
6115 destination used here may be incorrect. */
6119 /* We know is_branch_reloc (r_type) is true. */
6120 if (h->type == STT_GNU_IFUNC
6121 || r_type == R_PPC_PLTREL24)
6122 plist = &h->plt.plist;
6124 else if (sym_type == STT_GNU_IFUNC
6125 && elf_local_got_offsets (abfd) != NULL)
6127 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6128 struct plt_entry **local_plt = (struct plt_entry **)
6129 (local_got_offsets + symtab_hdr->sh_info);
6130 plist = local_plt + ELF32_R_SYM (irel->r_info);
6135 struct plt_entry *ent;
6137 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6138 addend = irel->r_addend;
6139 ent = find_plt_ent (plist, got2, addend);
6142 if (htab->plt_type == PLT_NEW
6144 || !htab->elf.dynamic_sections_created
6145 || h->dynindx == -1)
6148 toff = ent->glink_offset;
6153 toff = ent->plt.offset;
6158 /* If the branch and target are in the same section, you have
6159 no hope of adding stubs. We'll error out later should the
6164 /* There probably isn't any reason to handle symbols in
6165 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6166 attribute for a code section, and we are only looking at
6167 branches. However, implement it correctly here as a
6168 reference for other target relax_section functions. */
6169 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6171 /* At this stage in linking, no SEC_MERGE symbol has been
6172 adjusted, so all references to such symbols need to be
6173 passed through _bfd_merged_section_offset. (Later, in
6174 relocate_section, all SEC_MERGE symbols *except* for
6175 section symbols have been adjusted.)
6177 gas may reduce relocations against symbols in SEC_MERGE
6178 sections to a relocation against the section symbol when
6179 the original addend was zero. When the reloc is against
6180 a section symbol we should include the addend in the
6181 offset passed to _bfd_merged_section_offset, since the
6182 location of interest is the original symbol. On the
6183 other hand, an access to "sym+addend" where "sym" is not
6184 a section symbol should not include the addend; Such an
6185 access is presumed to be an offset from "sym"; The
6186 location of interest is just "sym". */
6187 if (sym_type == STT_SECTION)
6188 toff += irel->r_addend;
6190 toff = _bfd_merged_section_offset (abfd, &tsec,
6191 elf_section_data (tsec)->sec_info,
6194 if (sym_type != STT_SECTION)
6195 toff += irel->r_addend;
6197 /* PLTREL24 addends are special. */
6198 else if (r_type != R_PPC_PLTREL24)
6199 toff += irel->r_addend;
6201 /* Attempted -shared link of non-pic code loses. */
6202 if (tsec->output_section == NULL)
6205 roff = irel->r_offset;
6207 /* If the branch is in range, no need to do anything. */
6208 if (tsec != bfd_und_section_ptr
6209 && (!link_info->relocatable
6210 /* A relocatable link may have sections moved during
6211 final link, so do not presume they remain in range. */
6212 || tsec->output_section == isec->output_section))
6214 bfd_vma symaddr, reladdr;
6216 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6217 reladdr = isec->output_section->vma + isec->output_offset + roff;
6218 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6222 /* Look for an existing fixup to this address. */
6223 for (f = fixups; f ; f = f->next)
6224 if (f->tsec == tsec && f->toff == toff)
6230 unsigned long stub_rtype;
6232 val = trampoff - roff;
6233 if (val >= max_branch_offset)
6234 /* Oh dear, we can't reach a trampoline. Don't try to add
6235 one. We'll report an error later. */
6238 if (link_info->shared)
6240 size = 4 * ARRAY_SIZE (shared_stub_entry);
6242 stub_rtype = R_PPC_RELAX32PC;
6246 size = 4 * ARRAY_SIZE (stub_entry);
6248 stub_rtype = R_PPC_RELAX32;
6251 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
6252 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
6254 if (tsec == htab->plt
6255 || tsec == htab->glink)
6256 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
6258 /* Hijack the old relocation. Since we need two
6259 relocations for this use a "composite" reloc. */
6260 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6262 irel->r_offset = trampoff + insn_offset;
6263 if (r_type == R_PPC_PLTREL24)
6266 /* Record the fixup so we don't do it again this section. */
6267 f = bfd_malloc (sizeof (*f));
6271 f->trampoff = trampoff;
6279 val = f->trampoff - roff;
6280 if (val >= max_branch_offset)
6283 /* Nop out the reloc, since we're finalizing things here. */
6284 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6287 /* Get the section contents. */
6288 if (contents == NULL)
6290 /* Get cached copy if it exists. */
6291 if (elf_section_data (isec)->this_hdr.contents != NULL)
6292 contents = elf_section_data (isec)->this_hdr.contents;
6295 /* Go get them off disk. */
6296 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6301 /* Fix up the existing branch to hit the trampoline. */
6302 hit_addr = contents + roff;
6306 case R_PPC_LOCAL24PC:
6307 case R_PPC_PLTREL24:
6308 t0 = bfd_get_32 (abfd, hit_addr);
6310 t0 |= val & 0x3fffffc;
6311 bfd_put_32 (abfd, t0, hit_addr);
6315 case R_PPC_REL14_BRTAKEN:
6316 case R_PPC_REL14_BRNTAKEN:
6317 t0 = bfd_get_32 (abfd, hit_addr);
6320 bfd_put_32 (abfd, t0, hit_addr);
6325 /* Write out the trampolines. */
6335 struct one_fixup *f = fixups;
6336 fixups = fixups->next;
6341 contents = bfd_realloc_or_free (contents, trampoff);
6342 if (contents == NULL)
6345 isec->size = (isec->size + 3) & (bfd_vma) -4;
6346 /* Branch around the trampolines. */
6347 val = B + trampoff - isec->size;
6348 dest = contents + isec->size;
6349 isec->size = trampoff;
6350 bfd_put_32 (abfd, val, dest);
6353 if (link_info->shared)
6355 stub = shared_stub_entry;
6356 size = ARRAY_SIZE (shared_stub_entry);
6361 size = ARRAY_SIZE (stub_entry);
6365 while (dest < contents + trampoff)
6367 bfd_put_32 (abfd, stub[i], dest);
6373 BFD_ASSERT (i == 0);
6377 && symtab_hdr->contents != (unsigned char *) isymbuf)
6379 if (! link_info->keep_memory)
6383 /* Cache the symbols for elf_link_input_bfd. */
6384 symtab_hdr->contents = (unsigned char *) isymbuf;
6388 if (contents != NULL
6389 && elf_section_data (isec)->this_hdr.contents != contents)
6391 if (!changes && !link_info->keep_memory)
6395 /* Cache the section contents for elf_link_input_bfd. */
6396 elf_section_data (isec)->this_hdr.contents = contents;
6402 /* Append sufficient NOP relocs so we can write out relocation
6403 information for the trampolines. */
6404 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6405 * sizeof (*new_relocs));
6410 memcpy (new_relocs, internal_relocs,
6411 isec->reloc_count * sizeof (*new_relocs));
6412 for (ix = changes; ix--;)
6414 irel = new_relocs + ix + isec->reloc_count;
6416 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6418 if (internal_relocs != elf_section_data (isec)->relocs)
6419 free (internal_relocs);
6420 elf_section_data (isec)->relocs = new_relocs;
6421 isec->reloc_count += changes;
6422 elf_section_data (isec)->rel_hdr.sh_size
6423 += changes * elf_section_data (isec)->rel_hdr.sh_entsize;
6425 else if (elf_section_data (isec)->relocs != internal_relocs)
6426 free (internal_relocs);
6428 *again = changes != 0;
6429 if (!*again && link_info->relocatable)
6431 /* Convert the internal relax relocs to external form. */
6432 for (irel = internal_relocs; irel < irelend; irel++)
6433 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX32)
6435 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6437 /* Rewrite the reloc and convert one of the trailing nop
6438 relocs to describe this relocation. */
6439 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6440 /* The relocs are at the bottom 2 bytes */
6441 irel[0].r_offset += 2;
6442 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6443 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6444 irel[1].r_offset += 4;
6445 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6453 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6455 if (contents != NULL
6456 && elf_section_data (isec)->this_hdr.contents != contents)
6458 if (internal_relocs != NULL
6459 && elf_section_data (isec)->relocs != internal_relocs)
6460 free (internal_relocs);
6464 /* What to do when ld finds relocations against symbols defined in
6465 discarded sections. */
6468 ppc_elf_action_discarded (asection *sec)
6470 if (strcmp (".fixup", sec->name) == 0)
6473 if (strcmp (".got2", sec->name) == 0)
6476 return _bfd_elf_default_action_discarded (sec);
6479 /* Fill in the address for a pointer generated in a linker section. */
6482 elf_finish_pointer_linker_section (bfd *input_bfd,
6483 elf_linker_section_t *lsect,
6484 struct elf_link_hash_entry *h,
6486 const Elf_Internal_Rela *rel)
6488 elf_linker_section_pointers_t *linker_section_ptr;
6490 BFD_ASSERT (lsect != NULL);
6494 /* Handle global symbol. */
6495 struct ppc_elf_link_hash_entry *eh;
6497 eh = (struct ppc_elf_link_hash_entry *) h;
6498 BFD_ASSERT (eh->elf.def_regular);
6499 linker_section_ptr = eh->linker_section_pointer;
6503 /* Handle local symbol. */
6504 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6506 BFD_ASSERT (is_ppc_elf (input_bfd));
6507 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6508 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6511 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6514 BFD_ASSERT (linker_section_ptr != NULL);
6516 /* Offset will always be a multiple of four, so use the bottom bit
6517 as a "written" flag. */
6518 if ((linker_section_ptr->offset & 1) == 0)
6520 bfd_put_32 (lsect->section->owner,
6521 relocation + linker_section_ptr->addend,
6522 lsect->section->contents + linker_section_ptr->offset);
6523 linker_section_ptr->offset += 1;
6526 relocation = (lsect->section->output_section->vma
6527 + lsect->section->output_offset
6528 + linker_section_ptr->offset - 1
6529 - SYM_VAL (lsect->sym));
6533 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6534 lsect->name, (long) relocation, (long) relocation);
6540 #define PPC_LO(v) ((v) & 0xffff)
6541 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6542 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6545 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
6546 struct bfd_link_info *info)
6548 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6549 bfd *output_bfd = info->output_bfd;
6552 plt = ((ent->plt.offset & ~1)
6553 + plt_sec->output_section->vma
6554 + plt_sec->output_offset);
6560 if (ent->addend >= 32768)
6562 + ent->sec->output_section->vma
6563 + ent->sec->output_offset);
6564 else if (htab->elf.hgot != NULL)
6565 got = SYM_VAL (htab->elf.hgot);
6569 if (plt + 0x8000 < 0x10000)
6571 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6573 bfd_put_32 (output_bfd, MTCTR_11, p);
6575 bfd_put_32 (output_bfd, BCTR, p);
6577 bfd_put_32 (output_bfd, NOP, p);
6582 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6584 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6586 bfd_put_32 (output_bfd, MTCTR_11, p);
6588 bfd_put_32 (output_bfd, BCTR, p);
6594 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6596 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6598 bfd_put_32 (output_bfd, MTCTR_11, p);
6600 bfd_put_32 (output_bfd, BCTR, p);
6605 /* Return true if symbol is defined statically. */
6608 is_static_defined (struct elf_link_hash_entry *h)
6610 return ((h->root.type == bfd_link_hash_defined
6611 || h->root.type == bfd_link_hash_defweak)
6612 && h->root.u.def.section != NULL
6613 && h->root.u.def.section->output_section != NULL);
6616 /* If INSN is an opcode that may be used with an @tls operand, return
6617 the transformed insn for TLS optimisation, otherwise return 0. If
6618 REG is non-zero only match an insn with RB or RA equal to REG. */
6621 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
6625 if ((insn & (0x3f << 26)) != 31 << 26)
6628 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
6629 rtra = insn & ((1 << 26) - (1 << 16));
6630 else if (((insn >> 16) & 0x1f) == reg)
6631 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
6635 if ((insn & (0x3ff << 1)) == 266 << 1)
6638 else if ((insn & (0x1f << 1)) == 23 << 1
6639 && ((insn & (0x1f << 6)) < 14 << 6
6640 || ((insn & (0x1f << 6)) >= 16 << 6
6641 && (insn & (0x1f << 6)) < 24 << 6)))
6642 /* load and store indexed -> dform. */
6643 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
6644 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
6645 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6646 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
6647 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
6649 insn = (58 << 26) | 2;
6656 /* The RELOCATE_SECTION function is called by the ELF backend linker
6657 to handle the relocations for a section.
6659 The relocs are always passed as Rela structures; if the section
6660 actually uses Rel structures, the r_addend field will always be
6663 This function is responsible for adjust the section contents as
6664 necessary, and (if using Rela relocs and generating a
6665 relocatable output file) adjusting the reloc addend as
6668 This function does not have to worry about setting the reloc
6669 address or the reloc symbol index.
6671 LOCAL_SYMS is a pointer to the swapped in local symbols.
6673 LOCAL_SECTIONS is an array giving the section in the input file
6674 corresponding to the st_shndx field of each local symbol.
6676 The global hash table entry for the global symbols can be found
6677 via elf_sym_hashes (input_bfd).
6679 When generating relocatable output, this function must handle
6680 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6681 going to be the section symbol corresponding to the output
6682 section, which means that the addend must be adjusted
6686 ppc_elf_relocate_section (bfd *output_bfd,
6687 struct bfd_link_info *info,
6689 asection *input_section,
6691 Elf_Internal_Rela *relocs,
6692 Elf_Internal_Sym *local_syms,
6693 asection **local_sections)
6695 Elf_Internal_Shdr *symtab_hdr;
6696 struct elf_link_hash_entry **sym_hashes;
6697 struct ppc_elf_link_hash_table *htab;
6698 Elf_Internal_Rela *rel;
6699 Elf_Internal_Rela *relend;
6700 Elf_Internal_Rela outrel;
6701 asection *got2, *sreloc = NULL;
6702 bfd_vma *local_got_offsets;
6703 bfd_boolean ret = TRUE;
6704 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6705 bfd_boolean is_vxworks_tls;
6708 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6709 "%ld relocations%s",
6710 input_bfd, input_section,
6711 (long) input_section->reloc_count,
6712 (info->relocatable) ? " (relocatable)" : "");
6715 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6717 /* Initialize howto table if not already done. */
6718 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6719 ppc_elf_howto_init ();
6721 htab = ppc_elf_hash_table (info);
6722 local_got_offsets = elf_local_got_offsets (input_bfd);
6723 symtab_hdr = &elf_symtab_hdr (input_bfd);
6724 sym_hashes = elf_sym_hashes (input_bfd);
6725 /* We have to handle relocations in vxworks .tls_vars sections
6726 specially, because the dynamic loader is 'weird'. */
6727 is_vxworks_tls = (htab->is_vxworks && info->shared
6728 && !strcmp (input_section->output_section->name,
6731 relend = relocs + input_section->reloc_count;
6732 for (; rel < relend; rel++)
6734 enum elf_ppc_reloc_type r_type;
6736 bfd_reloc_status_type r;
6737 Elf_Internal_Sym *sym;
6739 struct elf_link_hash_entry *h;
6740 const char *sym_name;
6741 reloc_howto_type *howto;
6742 unsigned long r_symndx;
6744 bfd_vma branch_bit, from;
6745 bfd_boolean unresolved_reloc;
6747 unsigned int tls_type, tls_mask, tls_gd;
6748 struct plt_entry **ifunc;
6750 r_type = ELF32_R_TYPE (rel->r_info);
6754 unresolved_reloc = FALSE;
6756 r_symndx = ELF32_R_SYM (rel->r_info);
6758 if (r_symndx < symtab_hdr->sh_info)
6760 sym = local_syms + r_symndx;
6761 sec = local_sections[r_symndx];
6762 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6764 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6768 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6769 r_symndx, symtab_hdr, sym_hashes,
6771 unresolved_reloc, warned);
6773 sym_name = h->root.root.string;
6776 if (sec != NULL && elf_discarded_section (sec))
6778 /* For relocs against symbols from removed linkonce sections,
6779 or sections discarded by a linker script, we just want the
6780 section contents zeroed. Avoid any special processing. */
6782 if (r_type < R_PPC_max)
6783 howto = ppc_elf_howto_table[r_type];
6784 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6790 if (info->relocatable)
6793 && r_type == R_PPC_PLTREL24
6794 && rel->r_addend >= 32768)
6796 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6797 addend specifies the GOT pointer offset within .got2. */
6798 rel->r_addend += got2->output_offset;
6803 /* TLS optimizations. Replace instruction sequences and relocs
6804 based on information we collected in tls_optimize. We edit
6805 RELOCS so that --emit-relocs will output something sensible
6806 for the final instruction stream. */
6810 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6811 else if (local_got_offsets != NULL)
6813 struct plt_entry **local_plt;
6816 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6817 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
6818 tls_mask = lgot_masks[r_symndx];
6821 /* Ensure reloc mapping code below stays sane. */
6822 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6823 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6824 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6825 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6826 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6827 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6828 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6829 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6836 case R_PPC_GOT_TPREL16:
6837 case R_PPC_GOT_TPREL16_LO:
6838 if ((tls_mask & TLS_TLS) != 0
6839 && (tls_mask & TLS_TPREL) == 0)
6843 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6845 insn |= 0x3c020000; /* addis 0,2,0 */
6846 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6847 r_type = R_PPC_TPREL16_HA;
6848 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6853 if ((tls_mask & TLS_TLS) != 0
6854 && (tls_mask & TLS_TPREL) == 0)
6858 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6859 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
6862 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6863 r_type = R_PPC_TPREL16_LO;
6864 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6866 /* Was PPC_TLS which sits on insn boundary, now
6867 PPC_TPREL16_LO which is at low-order half-word. */
6868 rel->r_offset += d_offset;
6872 case R_PPC_GOT_TLSGD16_HI:
6873 case R_PPC_GOT_TLSGD16_HA:
6874 tls_gd = TLS_TPRELGD;
6875 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6879 case R_PPC_GOT_TLSLD16_HI:
6880 case R_PPC_GOT_TLSLD16_HA:
6881 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6884 if ((tls_mask & tls_gd) != 0)
6885 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6886 + R_PPC_GOT_TPREL16);
6889 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6890 rel->r_offset -= d_offset;
6891 r_type = R_PPC_NONE;
6893 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6897 case R_PPC_GOT_TLSGD16:
6898 case R_PPC_GOT_TLSGD16_LO:
6899 tls_gd = TLS_TPRELGD;
6900 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6904 case R_PPC_GOT_TLSLD16:
6905 case R_PPC_GOT_TLSLD16_LO:
6906 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6908 unsigned int insn1, insn2;
6912 offset = (bfd_vma) -1;
6913 /* If not using the newer R_PPC_TLSGD/LD to mark
6914 __tls_get_addr calls, we must trust that the call
6915 stays with its arg setup insns, ie. that the next
6916 reloc is the __tls_get_addr call associated with
6917 the current reloc. Edit both insns. */
6918 if (input_section->has_tls_get_addr_call
6920 && branch_reloc_hash_match (input_bfd, rel + 1,
6921 htab->tls_get_addr))
6922 offset = rel[1].r_offset;
6923 if ((tls_mask & tls_gd) != 0)
6926 insn1 = bfd_get_32 (output_bfd,
6927 contents + rel->r_offset - d_offset);
6928 insn1 &= (1 << 26) - 1;
6929 insn1 |= 32 << 26; /* lwz */
6930 if (offset != (bfd_vma) -1)
6932 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
6933 insn2 = 0x7c631214; /* add 3,3,2 */
6934 bfd_put_32 (output_bfd, insn2, contents + offset);
6936 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6937 + R_PPC_GOT_TPREL16);
6938 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6943 insn1 = 0x3c620000; /* addis 3,2,0 */
6946 /* Was an LD reloc. */
6948 r_symndx < symtab_hdr->sh_info;
6950 if (local_sections[r_symndx] == sec)
6952 if (r_symndx >= symtab_hdr->sh_info)
6954 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6956 rel->r_addend -= (local_syms[r_symndx].st_value
6957 + sec->output_offset
6958 + sec->output_section->vma);
6960 r_type = R_PPC_TPREL16_HA;
6961 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6962 if (offset != (bfd_vma) -1)
6964 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6965 rel[1].r_offset = offset + d_offset;
6966 rel[1].r_addend = rel->r_addend;
6967 insn2 = 0x38630000; /* addi 3,3,0 */
6968 bfd_put_32 (output_bfd, insn2, contents + offset);
6971 bfd_put_32 (output_bfd, insn1,
6972 contents + rel->r_offset - d_offset);
6975 /* We changed the symbol on an LD reloc. Start over
6976 in order to get h, sym, sec etc. right. */
6984 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6987 bfd_vma offset = rel->r_offset;
6989 if ((tls_mask & TLS_TPRELGD) != 0)
6992 r_type = R_PPC_NONE;
6993 insn2 = 0x7c631214; /* add 3,3,2 */
6998 r_type = R_PPC_TPREL16_LO;
6999 rel->r_offset += d_offset;
7000 insn2 = 0x38630000; /* addi 3,3,0 */
7002 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7003 bfd_put_32 (output_bfd, insn2, contents + offset);
7004 /* Zap the reloc on the _tls_get_addr call too. */
7005 BFD_ASSERT (offset == rel[1].r_offset);
7006 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7011 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7016 r_symndx < symtab_hdr->sh_info;
7018 if (local_sections[r_symndx] == sec)
7020 if (r_symndx >= symtab_hdr->sh_info)
7022 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7024 rel->r_addend -= (local_syms[r_symndx].st_value
7025 + sec->output_offset
7026 + sec->output_section->vma);
7028 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7029 rel->r_offset += d_offset;
7030 insn2 = 0x38630000; /* addi 3,3,0 */
7031 bfd_put_32 (output_bfd, insn2,
7032 contents + rel->r_offset - d_offset);
7033 /* Zap the reloc on the _tls_get_addr call too. */
7034 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7035 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7042 /* Handle other relocations that tweak non-addend part of insn. */
7049 /* Branch taken prediction relocations. */
7050 case R_PPC_ADDR14_BRTAKEN:
7051 case R_PPC_REL14_BRTAKEN:
7052 branch_bit = BRANCH_PREDICT_BIT;
7055 /* Branch not taken prediction relocations. */
7056 case R_PPC_ADDR14_BRNTAKEN:
7057 case R_PPC_REL14_BRNTAKEN:
7061 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7062 insn &= ~BRANCH_PREDICT_BIT;
7065 from = (rel->r_offset
7066 + input_section->output_offset
7067 + input_section->output_section->vma);
7069 /* Invert 'y' bit if not the default. */
7070 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7071 insn ^= BRANCH_PREDICT_BIT;
7073 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7079 if (!htab->is_vxworks)
7081 struct plt_entry *ent;
7085 if (h->type == STT_GNU_IFUNC)
7086 ifunc = &h->plt.plist;
7088 else if (local_got_offsets != NULL
7089 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7091 struct plt_entry **local_plt;
7093 local_plt = (struct plt_entry **) (local_got_offsets
7094 + symtab_hdr->sh_info);
7095 ifunc = local_plt + r_symndx;
7101 || is_branch_reloc (r_type)))
7104 if (r_type == R_PPC_PLTREL24 && info->shared)
7105 addend = rel->r_addend;
7106 ent = find_plt_ent (ifunc, got2, addend);
7110 if (h == NULL && (ent->plt.offset & 1) == 0)
7112 Elf_Internal_Rela rela;
7115 rela.r_offset = (htab->iplt->output_section->vma
7116 + htab->iplt->output_offset
7118 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7119 rela.r_addend = relocation;
7120 loc = htab->reliplt->contents;
7121 loc += (htab->reliplt->reloc_count++
7122 * sizeof (Elf32_External_Rela));
7123 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7125 ent->plt.offset |= 1;
7127 if (h == NULL && (ent->glink_offset & 1) == 0)
7129 unsigned char *p = ((unsigned char *) htab->glink->contents
7130 + ent->glink_offset);
7131 write_glink_stub (ent, htab->iplt, p, info);
7132 ent->glink_offset |= 1;
7135 unresolved_reloc = FALSE;
7136 if (htab->plt_type == PLT_NEW
7137 || !htab->elf.dynamic_sections_created
7139 relocation = (htab->glink->output_section->vma
7140 + htab->glink->output_offset
7141 + (ent->glink_offset & ~1));
7143 relocation = (htab->plt->output_section->vma
7144 + htab->plt->output_offset
7149 addend = rel->r_addend;
7152 if (r_type < R_PPC_max)
7153 howto = ppc_elf_howto_table[r_type];
7157 (*_bfd_error_handler)
7158 (_("%B: unknown relocation type %d for symbol %s"),
7159 input_bfd, (int) r_type, sym_name);
7161 bfd_set_error (bfd_error_bad_value);
7169 case R_PPC_EMB_MRKREF:
7170 case R_PPC_GNU_VTINHERIT:
7171 case R_PPC_GNU_VTENTRY:
7174 /* GOT16 relocations. Like an ADDR16 using the symbol's
7175 address in the GOT as relocation value instead of the
7176 symbol's value itself. Also, create a GOT entry for the
7177 symbol and put the symbol value there. */
7178 case R_PPC_GOT_TLSGD16:
7179 case R_PPC_GOT_TLSGD16_LO:
7180 case R_PPC_GOT_TLSGD16_HI:
7181 case R_PPC_GOT_TLSGD16_HA:
7182 tls_type = TLS_TLS | TLS_GD;
7185 case R_PPC_GOT_TLSLD16:
7186 case R_PPC_GOT_TLSLD16_LO:
7187 case R_PPC_GOT_TLSLD16_HI:
7188 case R_PPC_GOT_TLSLD16_HA:
7189 tls_type = TLS_TLS | TLS_LD;
7192 case R_PPC_GOT_TPREL16:
7193 case R_PPC_GOT_TPREL16_LO:
7194 case R_PPC_GOT_TPREL16_HI:
7195 case R_PPC_GOT_TPREL16_HA:
7196 tls_type = TLS_TLS | TLS_TPREL;
7199 case R_PPC_GOT_DTPREL16:
7200 case R_PPC_GOT_DTPREL16_LO:
7201 case R_PPC_GOT_DTPREL16_HI:
7202 case R_PPC_GOT_DTPREL16_HA:
7203 tls_type = TLS_TLS | TLS_DTPREL;
7207 case R_PPC_GOT16_LO:
7208 case R_PPC_GOT16_HI:
7209 case R_PPC_GOT16_HA:
7213 /* Relocation is to the entry for this symbol in the global
7219 if (htab->got == NULL)
7223 if (tls_type == (TLS_TLS | TLS_LD)
7225 || !h->def_dynamic))
7226 offp = &htab->tlsld_got.offset;
7230 dyn = htab->elf.dynamic_sections_created;
7231 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7233 && SYMBOL_REFERENCES_LOCAL (info, h)))
7234 /* This is actually a static link, or it is a
7235 -Bsymbolic link and the symbol is defined
7236 locally, or the symbol was forced to be local
7237 because of a version file. */
7242 unresolved_reloc = FALSE;
7244 offp = &h->got.offset;
7248 if (local_got_offsets == NULL)
7250 offp = &local_got_offsets[r_symndx];
7253 /* The offset must always be a multiple of 4. We use the
7254 least significant bit to record whether we have already
7255 processed this entry. */
7261 unsigned int tls_m = (tls_mask
7262 & (TLS_LD | TLS_GD | TLS_DTPREL
7263 | TLS_TPREL | TLS_TPRELGD));
7265 if (offp == &htab->tlsld_got.offset)
7271 /* We might have multiple got entries for this sym.
7272 Initialize them all. */
7277 if ((tls_m & TLS_LD) != 0)
7279 tls_ty = TLS_TLS | TLS_LD;
7282 else if ((tls_m & TLS_GD) != 0)
7284 tls_ty = TLS_TLS | TLS_GD;
7287 else if ((tls_m & TLS_DTPREL) != 0)
7289 tls_ty = TLS_TLS | TLS_DTPREL;
7290 tls_m &= ~TLS_DTPREL;
7292 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7294 tls_ty = TLS_TLS | TLS_TPREL;
7298 /* Generate relocs for the dynamic linker. */
7299 if ((info->shared || indx != 0)
7300 && (offp == &htab->tlsld_got.offset
7302 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7303 || h->root.type != bfd_link_hash_undefweak))
7305 asection *rsec = htab->relgot;
7308 outrel.r_offset = (htab->got->output_section->vma
7309 + htab->got->output_offset
7311 outrel.r_addend = 0;
7312 if (tls_ty & (TLS_LD | TLS_GD))
7314 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7315 if (tls_ty == (TLS_TLS | TLS_GD))
7317 loc = rsec->contents;
7318 loc += (rsec->reloc_count++
7319 * sizeof (Elf32_External_Rela));
7320 bfd_elf32_swap_reloca_out (output_bfd,
7322 outrel.r_offset += 4;
7324 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7327 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7328 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7329 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7330 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7332 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7333 else if (ifunc != NULL)
7334 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7336 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7337 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7339 outrel.r_addend += relocation;
7340 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7341 outrel.r_addend -= htab->elf.tls_sec->vma;
7343 loc = rsec->contents;
7344 loc += (rsec->reloc_count++
7345 * sizeof (Elf32_External_Rela));
7346 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7349 /* Init the .got section contents if we're not
7350 emitting a reloc. */
7353 bfd_vma value = relocation;
7355 if (tls_ty == (TLS_TLS | TLS_LD))
7357 else if (tls_ty != 0)
7359 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7360 if (tls_ty == (TLS_TLS | TLS_TPREL))
7361 value += DTP_OFFSET - TP_OFFSET;
7363 if (tls_ty == (TLS_TLS | TLS_GD))
7365 bfd_put_32 (output_bfd, value,
7366 htab->got->contents + off + 4);
7370 bfd_put_32 (output_bfd, value,
7371 htab->got->contents + off);
7375 if (tls_ty & (TLS_LD | TLS_GD))
7384 if (off >= (bfd_vma) -2)
7387 if ((tls_type & TLS_TLS) != 0)
7389 if (tls_type != (TLS_TLS | TLS_LD))
7391 if ((tls_mask & TLS_LD) != 0
7393 || !h->def_dynamic))
7395 if (tls_type != (TLS_TLS | TLS_GD))
7397 if ((tls_mask & TLS_GD) != 0)
7399 if (tls_type != (TLS_TLS | TLS_DTPREL))
7401 if ((tls_mask & TLS_DTPREL) != 0)
7408 relocation = (htab->got->output_section->vma
7409 + htab->got->output_offset
7411 - SYM_VAL (htab->elf.hgot));
7413 /* Addends on got relocations don't make much sense.
7414 x+off@got is actually x@got+off, and since the got is
7415 generated by a hash table traversal, the value in the
7416 got at entry m+n bears little relation to the entry m. */
7418 (*_bfd_error_handler)
7419 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
7422 (long) rel->r_offset,
7428 /* Relocations that need no special processing. */
7429 case R_PPC_LOCAL24PC:
7430 /* It makes no sense to point a local relocation
7431 at a symbol not in this object. */
7432 if (unresolved_reloc)
7434 if (! (*info->callbacks->undefined_symbol) (info,
7435 h->root.root.string,
7445 case R_PPC_DTPREL16:
7446 case R_PPC_DTPREL16_LO:
7447 case R_PPC_DTPREL16_HI:
7448 case R_PPC_DTPREL16_HA:
7449 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7452 /* Relocations that may need to be propagated if this is a shared
7455 case R_PPC_TPREL16_LO:
7456 case R_PPC_TPREL16_HI:
7457 case R_PPC_TPREL16_HA:
7458 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7459 /* The TPREL16 relocs shouldn't really be used in shared
7460 libs as they will result in DT_TEXTREL being set, but
7461 support them anyway. */
7465 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7468 case R_PPC_DTPREL32:
7469 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7472 case R_PPC_DTPMOD32:
7478 case R_PPC_REL16_LO:
7479 case R_PPC_REL16_HI:
7480 case R_PPC_REL16_HA:
7484 if (h == NULL || h == htab->elf.hgot)
7490 case R_PPC_ADDR16_LO:
7491 case R_PPC_ADDR16_HI:
7492 case R_PPC_ADDR16_HA:
7499 case R_PPC_REL14_BRTAKEN:
7500 case R_PPC_REL14_BRNTAKEN:
7501 /* If these relocations are not to a named symbol, they can be
7502 handled right here, no need to bother the dynamic linker. */
7503 if (SYMBOL_CALLS_LOCAL (info, h)
7504 || h == htab->elf.hgot)
7510 case R_PPC_ADDR14_BRTAKEN:
7511 case R_PPC_ADDR14_BRNTAKEN:
7512 if (h != NULL && !info->shared)
7517 if ((input_section->flags & SEC_ALLOC) == 0
7523 && ((h->root.type == bfd_link_hash_undefined
7524 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7525 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7526 || (h->root.type == bfd_link_hash_undefweak
7527 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
7528 && (must_be_dyn_reloc (info, r_type)
7529 || !SYMBOL_CALLS_LOCAL (info, h)))
7530 || (ELIMINATE_COPY_RELOCS
7535 && !h->def_regular))
7540 fprintf (stderr, "ppc_elf_relocate_section needs to "
7541 "create relocation for %s\n",
7542 (h && h->root.root.string
7543 ? h->root.root.string : "<unknown>"));
7546 /* When generating a shared object, these relocations
7547 are copied into the output file to be resolved at run
7551 sreloc = elf_section_data (input_section)->sreloc;
7552 if (!htab->elf.dynamic_sections_created)
7553 sreloc = htab->reliplt;
7560 _bfd_elf_section_offset (output_bfd, info, input_section,
7562 if (outrel.r_offset == (bfd_vma) -1
7563 || outrel.r_offset == (bfd_vma) -2)
7564 skip = (int) outrel.r_offset;
7565 outrel.r_offset += (input_section->output_section->vma
7566 + input_section->output_offset);
7569 memset (&outrel, 0, sizeof outrel);
7571 && (h->root.type == bfd_link_hash_undefined
7572 || h->root.type == bfd_link_hash_undefweak))
7573 || !SYMBOL_REFERENCES_LOCAL (info, h))
7575 unresolved_reloc = FALSE;
7576 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7577 outrel.r_addend = rel->r_addend;
7581 outrel.r_addend = relocation + rel->r_addend;
7583 if (r_type != R_PPC_ADDR32)
7589 /* If we get here when building a static
7590 executable, then the libc startup function
7591 responsible for applying indirect function
7592 relocations is going to complain about
7594 If we get here when building a dynamic
7595 executable, it will be because we have
7596 a text relocation. The dynamic loader
7597 will set the text segment writable and
7598 non-executable to apply text relocations.
7599 So we'll segfault when trying to run the
7600 indirection function to resolve the reloc. */
7601 (*_bfd_error_handler)
7602 (_("%B(%A+0x%lx): relocation %s for indirect "
7603 "function %s unsupported"),
7606 (long) rel->r_offset,
7611 else if (r_symndx == 0 || bfd_is_abs_section (sec))
7613 else if (sec == NULL || sec->owner == NULL)
7615 bfd_set_error (bfd_error_bad_value);
7622 /* We are turning this relocation into one
7623 against a section symbol. It would be
7624 proper to subtract the symbol's value,
7625 osec->vma, from the emitted reloc addend,
7626 but ld.so expects buggy relocs.
7627 FIXME: Why not always use a zero index? */
7628 osec = sec->output_section;
7629 indx = elf_section_data (osec)->dynindx;
7632 osec = htab->elf.text_index_section;
7633 indx = elf_section_data (osec)->dynindx;
7635 BFD_ASSERT (indx != 0);
7638 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7639 indx, osec->name, osec->flags,
7640 h->root.root.string);
7644 outrel.r_info = ELF32_R_INFO (indx, r_type);
7646 else if (ifunc != NULL)
7647 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7649 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7652 loc = sreloc->contents;
7653 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7654 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7659 /* This reloc will be computed at runtime. We clear the memory
7660 so that it contains predictable value. */
7662 && ((input_section->flags & SEC_ALLOC) != 0
7663 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7665 relocation = howto->pc_relative ? outrel.r_offset : 0;
7672 case R_PPC_RELAX32PC_PLT:
7673 case R_PPC_RELAX32_PLT:
7676 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7677 info->shared ? addend : 0);
7678 if (htab->plt_type == PLT_NEW)
7679 relocation = (htab->glink->output_section->vma
7680 + htab->glink->output_offset
7681 + ent->glink_offset);
7683 relocation = (htab->plt->output_section->vma
7684 + htab->plt->output_offset
7687 if (r_type == R_PPC_RELAX32_PLT)
7691 case R_PPC_RELAX32PC:
7692 relocation -= (input_section->output_section->vma
7693 + input_section->output_offset
7694 + rel->r_offset - 4);
7703 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7704 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7706 /* We're clearing the bits for R_PPC_ADDR16_HA
7707 and R_PPC_ADDR16_LO here. */
7711 /* t0 is HA, t1 is LO */
7712 relocation += addend;
7713 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7714 t1 |= relocation & 0xffff;
7716 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7717 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
7719 /* Rewrite the reloc and convert one of the trailing nop
7720 relocs to describe this relocation. */
7721 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7722 /* The relocs are at the bottom 2 bytes */
7723 rel[0].r_offset += 2;
7724 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7725 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7726 rel[1].r_offset += 4;
7727 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7732 /* Indirect .sdata relocation. */
7733 case R_PPC_EMB_SDAI16:
7734 BFD_ASSERT (htab->sdata[0].section != NULL);
7735 if (!is_static_defined (htab->sdata[0].sym))
7737 unresolved_reloc = TRUE;
7741 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7742 h, relocation, rel);
7746 /* Indirect .sdata2 relocation. */
7747 case R_PPC_EMB_SDA2I16:
7748 BFD_ASSERT (htab->sdata[1].section != NULL);
7749 if (!is_static_defined (htab->sdata[1].sym))
7751 unresolved_reloc = TRUE;
7755 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7756 h, relocation, rel);
7760 /* Handle the TOC16 reloc. We want to use the offset within the .got
7761 section, not the actual VMA. This is appropriate when generating
7762 an embedded ELF object, for which the .got section acts like the
7763 AIX .toc section. */
7764 case R_PPC_TOC16: /* phony GOT16 relocations */
7765 if (sec == NULL || sec->output_section == NULL)
7767 unresolved_reloc = TRUE;
7770 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7771 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7773 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7776 case R_PPC_PLTREL24:
7777 if (h == NULL || ifunc != NULL)
7779 /* Relocation is to the entry for this symbol in the
7780 procedure linkage table. */
7782 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7783 info->shared ? addend : 0);
7786 || htab->plt == NULL)
7788 /* We didn't make a PLT entry for this symbol. This
7789 happens when statically linking PIC code, or when
7790 using -Bsymbolic. */
7794 unresolved_reloc = FALSE;
7795 if (htab->plt_type == PLT_NEW)
7796 relocation = (htab->glink->output_section->vma
7797 + htab->glink->output_offset
7798 + ent->glink_offset);
7800 relocation = (htab->plt->output_section->vma
7801 + htab->plt->output_offset
7806 /* Relocate against _SDA_BASE_. */
7807 case R_PPC_SDAREL16:
7810 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
7813 || sec->output_section == NULL
7814 || !is_static_defined (sda))
7816 unresolved_reloc = TRUE;
7819 addend -= SYM_VAL (sda);
7821 name = bfd_get_section_name (abfd, sec->output_section);
7822 if (! ((CONST_STRNEQ (name, ".sdata")
7823 && (name[6] == 0 || name[6] == '.'))
7824 || (CONST_STRNEQ (name, ".sbss")
7825 && (name[5] == 0 || name[5] == '.'))))
7827 (*_bfd_error_handler)
7828 (_("%B: the target (%s) of a %s relocation is "
7829 "in the wrong output section (%s)"),
7838 /* Relocate against _SDA2_BASE_. */
7839 case R_PPC_EMB_SDA2REL:
7842 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
7845 || sec->output_section == NULL
7846 || !is_static_defined (sda))
7848 unresolved_reloc = TRUE;
7851 addend -= SYM_VAL (sda);
7853 name = bfd_get_section_name (abfd, sec->output_section);
7854 if (! (CONST_STRNEQ (name, ".sdata2")
7855 || CONST_STRNEQ (name, ".sbss2")))
7857 (*_bfd_error_handler)
7858 (_("%B: the target (%s) of a %s relocation is "
7859 "in the wrong output section (%s)"),
7868 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7869 case R_PPC_EMB_SDA21:
7870 case R_PPC_EMB_RELSDA:
7874 struct elf_link_hash_entry *sda = NULL;
7876 if (sec == NULL || sec->output_section == NULL)
7878 unresolved_reloc = TRUE;
7882 name = bfd_get_section_name (abfd, sec->output_section);
7883 if (((CONST_STRNEQ (name, ".sdata")
7884 && (name[6] == 0 || name[6] == '.'))
7885 || (CONST_STRNEQ (name, ".sbss")
7886 && (name[5] == 0 || name[5] == '.'))))
7889 sda = htab->sdata[0].sym;
7891 else if (CONST_STRNEQ (name, ".sdata2")
7892 || CONST_STRNEQ (name, ".sbss2"))
7895 sda = htab->sdata[1].sym;
7897 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7898 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7904 (*_bfd_error_handler)
7905 (_("%B: the target (%s) of a %s relocation is "
7906 "in the wrong output section (%s)"),
7912 bfd_set_error (bfd_error_bad_value);
7919 if (!is_static_defined (sda))
7921 unresolved_reloc = TRUE;
7924 addend -= SYM_VAL (sda);
7927 if (r_type == R_PPC_EMB_SDA21)
7929 bfd_vma insn; /* Fill in register field. */
7931 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7932 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7933 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7938 /* Relocate against the beginning of the section. */
7940 case R_PPC_SECTOFF_LO:
7941 case R_PPC_SECTOFF_HI:
7942 case R_PPC_SECTOFF_HA:
7943 if (sec == NULL || sec->output_section == NULL)
7945 unresolved_reloc = TRUE;
7948 addend -= sec->output_section->vma;
7951 /* Negative relocations. */
7952 case R_PPC_EMB_NADDR32:
7953 case R_PPC_EMB_NADDR16:
7954 case R_PPC_EMB_NADDR16_LO:
7955 case R_PPC_EMB_NADDR16_HI:
7956 case R_PPC_EMB_NADDR16_HA:
7957 addend -= 2 * relocation;
7961 case R_PPC_GLOB_DAT:
7962 case R_PPC_JMP_SLOT:
7963 case R_PPC_RELATIVE:
7964 case R_PPC_IRELATIVE:
7966 case R_PPC_PLTREL32:
7967 case R_PPC_PLT16_LO:
7968 case R_PPC_PLT16_HI:
7969 case R_PPC_PLT16_HA:
7971 case R_PPC_EMB_RELSEC16:
7972 case R_PPC_EMB_RELST_LO:
7973 case R_PPC_EMB_RELST_HI:
7974 case R_PPC_EMB_RELST_HA:
7975 case R_PPC_EMB_BIT_FLD:
7976 (*_bfd_error_handler)
7977 (_("%B: relocation %s is not yet supported for symbol %s."),
7982 bfd_set_error (bfd_error_invalid_operation);
7987 /* Do any further special processing. */
7993 case R_PPC_ADDR16_HA:
7994 case R_PPC_REL16_HA:
7995 case R_PPC_SECTOFF_HA:
7996 case R_PPC_TPREL16_HA:
7997 case R_PPC_DTPREL16_HA:
7998 case R_PPC_EMB_NADDR16_HA:
7999 case R_PPC_EMB_RELST_HA:
8000 /* It's just possible that this symbol is a weak symbol
8001 that's not actually defined anywhere. In that case,
8002 'sec' would be NULL, and we should leave the symbol
8003 alone (it will be set to zero elsewhere in the link). */
8008 case R_PPC_PLT16_HA:
8009 case R_PPC_GOT16_HA:
8010 case R_PPC_GOT_TLSGD16_HA:
8011 case R_PPC_GOT_TLSLD16_HA:
8012 case R_PPC_GOT_TPREL16_HA:
8013 case R_PPC_GOT_DTPREL16_HA:
8014 /* Add 0x10000 if sign bit in 0:15 is set.
8015 Bits 0:15 are not used. */
8021 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8022 "offset = %ld, addend = %ld\n",
8027 (long) rel->r_offset,
8031 if (unresolved_reloc
8032 && !((input_section->flags & SEC_DEBUGGING) != 0
8035 (*_bfd_error_handler)
8036 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
8039 (long) rel->r_offset,
8045 r = _bfd_final_link_relocate (howto,
8053 if (r != bfd_reloc_ok)
8055 if (r == bfd_reloc_overflow)
8060 && h->root.type == bfd_link_hash_undefweak
8061 && howto->pc_relative)
8063 /* Assume this is a call protected by other code that
8064 detect the symbol is undefined. If this is the case,
8065 we can safely ignore the overflow. If not, the
8066 program is hosed anyway, and a little warning isn't
8072 if (! (*info->callbacks->reloc_overflow) (info,
8073 (h ? &h->root : NULL),
8084 (*_bfd_error_handler)
8085 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
8086 input_bfd, input_section,
8087 (long) rel->r_offset, howto->name, sym_name, (int) r);
8094 fprintf (stderr, "\n");
8100 /* Finish up dynamic symbol handling. We set the contents of various
8101 dynamic sections here. */
8104 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
8105 struct bfd_link_info *info,
8106 struct elf_link_hash_entry *h,
8107 Elf_Internal_Sym *sym)
8109 struct ppc_elf_link_hash_table *htab;
8110 struct plt_entry *ent;
8111 bfd_boolean doneone;
8114 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
8115 h->root.root.string);
8118 htab = ppc_elf_hash_table (info);
8119 BFD_ASSERT (htab->elf.dynobj != NULL);
8122 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8123 if (ent->plt.offset != (bfd_vma) -1)
8127 Elf_Internal_Rela rela;
8129 bfd_vma reloc_index;
8131 if (htab->plt_type == PLT_NEW
8132 || !htab->elf.dynamic_sections_created
8133 || h->dynindx == -1)
8134 reloc_index = ent->plt.offset / 4;
8137 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
8138 / htab->plt_slot_size);
8139 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
8140 && htab->plt_type == PLT_OLD)
8141 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
8144 /* This symbol has an entry in the procedure linkage table.
8146 if (htab->plt_type == PLT_VXWORKS
8147 && htab->elf.dynamic_sections_created
8148 && h->dynindx != -1)
8151 const bfd_vma *plt_entry;
8153 /* The first three entries in .got.plt are reserved. */
8154 got_offset = (reloc_index + 3) * 4;
8156 /* Use the right PLT. */
8157 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8158 : ppc_elf_vxworks_plt_entry;
8160 /* Fill in the .plt on VxWorks. */
8163 bfd_put_32 (output_bfd,
8164 plt_entry[0] | PPC_HA (got_offset),
8165 htab->plt->contents + ent->plt.offset + 0);
8166 bfd_put_32 (output_bfd,
8167 plt_entry[1] | PPC_LO (got_offset),
8168 htab->plt->contents + ent->plt.offset + 4);
8172 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
8174 bfd_put_32 (output_bfd,
8175 plt_entry[0] | PPC_HA (got_loc),
8176 htab->plt->contents + ent->plt.offset + 0);
8177 bfd_put_32 (output_bfd,
8178 plt_entry[1] | PPC_LO (got_loc),
8179 htab->plt->contents + ent->plt.offset + 4);
8182 bfd_put_32 (output_bfd, plt_entry[2],
8183 htab->plt->contents + ent->plt.offset + 8);
8184 bfd_put_32 (output_bfd, plt_entry[3],
8185 htab->plt->contents + ent->plt.offset + 12);
8187 /* This instruction is an immediate load. The value loaded is
8188 the byte offset of the R_PPC_JMP_SLOT relocation from the
8189 start of the .rela.plt section. The value is stored in the
8190 low-order 16 bits of the load instruction. */
8191 /* NOTE: It appears that this is now an index rather than a
8192 prescaled offset. */
8193 bfd_put_32 (output_bfd,
8194 plt_entry[4] | reloc_index,
8195 htab->plt->contents + ent->plt.offset + 16);
8196 /* This instruction is a PC-relative branch whose target is
8197 the start of the PLT section. The address of this branch
8198 instruction is 20 bytes beyond the start of this PLT entry.
8199 The address is encoded in bits 6-29, inclusive. The value
8200 stored is right-shifted by two bits, permitting a 26-bit
8202 bfd_put_32 (output_bfd,
8204 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8205 htab->plt->contents + ent->plt.offset + 20);
8206 bfd_put_32 (output_bfd, plt_entry[6],
8207 htab->plt->contents + ent->plt.offset + 24);
8208 bfd_put_32 (output_bfd, plt_entry[7],
8209 htab->plt->contents + ent->plt.offset + 28);
8211 /* Fill in the GOT entry corresponding to this PLT slot with
8212 the address immediately after the the "bctr" instruction
8213 in this PLT entry. */
8214 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8215 + htab->plt->output_offset
8216 + ent->plt.offset + 16),
8217 htab->sgotplt->contents + got_offset);
8221 /* Fill in a couple of entries in .rela.plt.unloaded. */
8222 loc = htab->srelplt2->contents
8223 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8224 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8225 * sizeof (Elf32_External_Rela));
8227 /* Provide the @ha relocation for the first instruction. */
8228 rela.r_offset = (htab->plt->output_section->vma
8229 + htab->plt->output_offset
8230 + ent->plt.offset + 2);
8231 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8233 rela.r_addend = got_offset;
8234 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8235 loc += sizeof (Elf32_External_Rela);
8237 /* Provide the @l relocation for the second instruction. */
8238 rela.r_offset = (htab->plt->output_section->vma
8239 + htab->plt->output_offset
8240 + ent->plt.offset + 6);
8241 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8243 rela.r_addend = got_offset;
8244 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8245 loc += sizeof (Elf32_External_Rela);
8247 /* Provide a relocation for the GOT entry corresponding to this
8248 PLT slot. Point it at the middle of the .plt entry. */
8249 rela.r_offset = (htab->sgotplt->output_section->vma
8250 + htab->sgotplt->output_offset
8252 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
8254 rela.r_addend = ent->plt.offset + 16;
8255 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8258 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8259 In particular, the offset for the relocation is not the
8260 address of the PLT entry for this function, as specified
8261 by the ABI. Instead, the offset is set to the address of
8262 the GOT slot for this function. See EABI 4.4.4.1. */
8263 rela.r_offset = (htab->sgotplt->output_section->vma
8264 + htab->sgotplt->output_offset
8270 asection *splt = htab->plt;
8271 if (!htab->elf.dynamic_sections_created
8272 || h->dynindx == -1)
8275 rela.r_offset = (splt->output_section->vma
8276 + splt->output_offset
8278 if (htab->plt_type == PLT_OLD
8279 || !htab->elf.dynamic_sections_created
8280 || h->dynindx == -1)
8282 /* We don't need to fill in the .plt. The ppc dynamic
8283 linker will fill it in. */
8287 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8288 + htab->glink->output_section->vma
8289 + htab->glink->output_offset);
8290 bfd_put_32 (output_bfd, val,
8291 splt->contents + ent->plt.offset);
8295 /* Fill in the entry in the .rela.plt section. */
8297 if (!htab->elf.dynamic_sections_created
8298 || h->dynindx == -1)
8300 BFD_ASSERT (h->type == STT_GNU_IFUNC
8302 && (h->root.type == bfd_link_hash_defined
8303 || h->root.type == bfd_link_hash_defweak));
8304 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8305 rela.r_addend = SYM_VAL (h);
8308 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
8310 if (!htab->elf.dynamic_sections_created
8311 || h->dynindx == -1)
8312 loc = (htab->reliplt->contents
8313 + (htab->reliplt->reloc_count++
8314 * sizeof (Elf32_External_Rela)));
8316 loc = (htab->relplt->contents
8317 + reloc_index * sizeof (Elf32_External_Rela));
8318 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8320 if (!h->def_regular)
8322 /* Mark the symbol as undefined, rather than as
8323 defined in the .plt section. Leave the value if
8324 there were any relocations where pointer equality
8325 matters (this is a clue for the dynamic linker, to
8326 make function pointer comparisons work between an
8327 application and shared library), otherwise set it
8329 sym->st_shndx = SHN_UNDEF;
8330 if (!h->pointer_equality_needed)
8332 else if (!h->ref_regular_nonweak)
8334 /* This breaks function pointer comparisons, but
8335 that is better than breaking tests for a NULL
8336 function pointer. */
8340 else if (h->type == STT_GNU_IFUNC
8343 /* Set the value of ifunc symbols in a non-pie
8344 executable to the glink entry. This is to avoid
8345 text relocations. We can't do this for ifunc in
8346 allocate_dynrelocs, as we do for normal dynamic
8347 function symbols with plt entries, because we need
8348 to keep the original value around for the ifunc
8350 sym->st_shndx = (_bfd_elf_section_from_bfd_section
8351 (output_bfd, htab->glink->output_section));
8352 sym->st_value = (ent->glink_offset +
8353 htab->glink->output_offset
8354 + htab->glink->output_section->vma);
8359 if (htab->plt_type == PLT_NEW
8360 || !htab->elf.dynamic_sections_created
8361 || h->dynindx == -1)
8364 asection *splt = htab->plt;
8365 if (!htab->elf.dynamic_sections_created
8366 || h->dynindx == -1)
8369 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
8371 if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
8373 bfd_put_32 (output_bfd, LWZ_11_3, p);
8375 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
8377 bfd_put_32 (output_bfd, MR_0_3, p);
8379 bfd_put_32 (output_bfd, CMPWI_11_0, p);
8381 bfd_put_32 (output_bfd, ADD_3_12_2, p);
8383 bfd_put_32 (output_bfd, BEQLR, p);
8385 bfd_put_32 (output_bfd, MR_3_0, p);
8387 bfd_put_32 (output_bfd, NOP, p);
8391 write_glink_stub (ent, splt, p, info);
8394 /* We only need one non-PIC glink stub. */
8404 Elf_Internal_Rela rela;
8407 /* This symbols needs a copy reloc. Set it up. */
8410 fprintf (stderr, ", copy");
8413 BFD_ASSERT (h->dynindx != -1);
8415 if (ppc_elf_hash_entry (h)->has_sda_refs)
8419 BFD_ASSERT (s != NULL);
8421 rela.r_offset = SYM_VAL (h);
8422 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8424 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8425 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8429 fprintf (stderr, "\n");
8432 /* Mark some specially defined symbols as absolute. */
8433 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8434 || (!htab->is_vxworks
8435 && (h == htab->elf.hgot
8436 || strcmp (h->root.root.string,
8437 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
8438 sym->st_shndx = SHN_ABS;
8443 static enum elf_reloc_type_class
8444 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8446 switch (ELF32_R_TYPE (rela->r_info))
8448 case R_PPC_RELATIVE:
8449 return reloc_class_relative;
8452 case R_PPC_JMP_SLOT:
8453 return reloc_class_plt;
8455 return reloc_class_copy;
8457 return reloc_class_normal;
8461 /* Finish up the dynamic sections. */
8464 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8465 struct bfd_link_info *info)
8469 struct ppc_elf_link_hash_table *htab;
8472 bfd_boolean ret = TRUE;
8475 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8478 htab = ppc_elf_hash_table (info);
8479 dynobj = elf_hash_table (info)->dynobj;
8480 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8481 if (htab->is_vxworks)
8482 splt = bfd_get_section_by_name (dynobj, ".plt");
8487 if (htab->elf.hgot != NULL)
8488 got = SYM_VAL (htab->elf.hgot);
8490 if (htab->elf.dynamic_sections_created)
8492 Elf32_External_Dyn *dyncon, *dynconend;
8494 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
8496 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8497 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8498 for (; dyncon < dynconend; dyncon++)
8500 Elf_Internal_Dyn dyn;
8503 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
8508 if (htab->is_vxworks)
8512 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8516 dyn.d_un.d_val = htab->relplt->size;
8521 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8525 dyn.d_un.d_ptr = got;
8529 if (htab->is_vxworks)
8532 dyn.d_un.d_ptr -= htab->relplt->size;
8538 if (htab->is_vxworks
8539 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8544 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8548 if (htab->got != NULL)
8550 if (htab->elf.hgot->root.u.def.section == htab->got
8551 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
8553 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
8555 p += htab->elf.hgot->root.u.def.value;
8556 if (htab->plt_type == PLT_OLD)
8558 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8559 so that a function can easily find the address of
8560 _GLOBAL_OFFSET_TABLE_. */
8561 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8562 < htab->elf.hgot->root.u.def.section->size);
8563 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8568 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8569 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8570 < htab->elf.hgot->root.u.def.section->size);
8571 bfd_put_32 (output_bfd, val, p);
8576 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
8577 htab->elf.hgot->root.root.string,
8578 (htab->sgotplt != NULL
8579 ? htab->sgotplt->name : htab->got->name));
8580 bfd_set_error (bfd_error_bad_value);
8584 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8587 /* Fill in the first entry in the VxWorks procedure linkage table. */
8588 if (splt && splt->size > 0)
8590 /* Use the right PLT. */
8591 static const bfd_vma *plt_entry = NULL;
8592 plt_entry = info->shared ?
8593 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
8597 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
8599 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
8600 splt->contents + 0);
8601 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
8602 splt->contents + 4);
8606 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8607 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8609 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8610 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8611 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8612 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8613 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8614 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8618 Elf_Internal_Rela rela;
8621 loc = htab->srelplt2->contents;
8623 /* Output the @ha relocation for the first instruction. */
8624 rela.r_offset = (htab->plt->output_section->vma
8625 + htab->plt->output_offset
8627 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8629 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8630 loc += sizeof (Elf32_External_Rela);
8632 /* Output the @l relocation for the second instruction. */
8633 rela.r_offset = (htab->plt->output_section->vma
8634 + htab->plt->output_offset
8636 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8638 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8639 loc += sizeof (Elf32_External_Rela);
8641 /* Fix up the remaining relocations. They may have the wrong
8642 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8643 in which symbols were output. */
8644 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8646 Elf_Internal_Rela rel;
8648 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8649 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8650 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8651 loc += sizeof (Elf32_External_Rela);
8653 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8654 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8655 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8656 loc += sizeof (Elf32_External_Rela);
8658 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8659 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
8660 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8661 loc += sizeof (Elf32_External_Rela);
8666 if (htab->glink != NULL
8667 && htab->glink->contents != NULL
8668 && htab->elf.dynamic_sections_created)
8671 unsigned char *endp;
8676 * PIC glink code is the following:
8678 * # ith PLT code stub.
8679 * addis 11,30,(plt+(i-1)*4-got)@ha
8680 * lwz 11,(plt+(i-1)*4-got)@l(11)
8684 * # A table of branches, one for each plt entry.
8685 * # The idea is that the plt call stub loads ctr and r11 with these
8686 * # addresses, so (r11 - res_0) gives the plt index * 4.
8687 * res_0: b PLTresolve
8688 * res_1: b PLTresolve
8690 * # Some number of entries towards the end can be nops
8696 * addis 11,11,(1f-res_0)@ha
8699 * 1: addi 11,11,(1b-res_0)@l
8702 * sub 11,11,12 # r11 = index * 4
8703 * addis 12,12,(got+4-1b)@ha
8704 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8705 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8708 * add 11,0,11 # r11 = index * 12 = reloc offset.
8711 static const unsigned int pic_plt_resolve[] =
8732 * Non-PIC glink code is a little simpler.
8734 * # ith PLT code stub.
8735 * lis 11,(plt+(i-1)*4)@ha
8736 * lwz 11,(plt+(i-1)*4)@l(11)
8740 * The branch table is the same, then comes
8744 * addis 11,11,(-res_0)@ha
8745 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8746 * addi 11,11,(-res_0)@l # r11 = index * 4
8749 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8750 * add 11,0,11 # r11 = index * 12 = reloc offset.
8753 static const unsigned int plt_resolve[] =
8773 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8775 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
8778 /* Build the branch table, one for each plt entry (less one),
8779 and perhaps some padding. */
8780 p = htab->glink->contents;
8781 p += htab->glink_pltresolve;
8782 endp = htab->glink->contents;
8783 endp += htab->glink->size - GLINK_PLTRESOLVE;
8784 while (p < endp - 8 * 4)
8786 bfd_put_32 (output_bfd, B + endp - p, p);
8791 bfd_put_32 (output_bfd, NOP, p);
8795 res0 = (htab->glink_pltresolve
8796 + htab->glink->output_section->vma
8797 + htab->glink->output_offset);
8799 /* Last comes the PLTresolve stub. */
8804 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8806 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8809 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8811 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8812 + htab->glink->output_section->vma
8813 + htab->glink->output_offset);
8815 bfd_put_32 (output_bfd,
8816 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8817 bfd_put_32 (output_bfd,
8818 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8819 bfd_put_32 (output_bfd,
8820 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8821 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8823 bfd_put_32 (output_bfd,
8824 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8825 bfd_put_32 (output_bfd,
8826 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8830 bfd_put_32 (output_bfd,
8831 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8832 bfd_put_32 (output_bfd,
8833 LWZ_12_12 + 4, p + 9*4);
8838 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8840 bfd_put_32 (output_bfd, plt_resolve[i], p);
8843 p -= 4 * ARRAY_SIZE (plt_resolve);
8845 bfd_put_32 (output_bfd,
8846 LIS_12 + PPC_HA (got + 4), p + 0*4);
8847 bfd_put_32 (output_bfd,
8848 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8849 bfd_put_32 (output_bfd,
8850 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8851 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8853 bfd_put_32 (output_bfd,
8854 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8855 bfd_put_32 (output_bfd,
8856 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8860 bfd_put_32 (output_bfd,
8861 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8862 bfd_put_32 (output_bfd,
8863 LWZ_12_12 + 4, p + 6*4);
8871 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8872 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8873 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8874 #define TARGET_BIG_NAME "elf32-powerpc"
8875 #define ELF_ARCH bfd_arch_powerpc
8876 #define ELF_MACHINE_CODE EM_PPC
8877 #ifdef __QNXTARGET__
8878 #define ELF_MAXPAGESIZE 0x1000
8880 #define ELF_MAXPAGESIZE 0x10000
8882 #define ELF_MINPAGESIZE 0x1000
8883 #define ELF_COMMONPAGESIZE 0x1000
8884 #define elf_info_to_howto ppc_elf_info_to_howto
8886 #ifdef EM_CYGNUS_POWERPC
8887 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8891 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8894 #define elf_backend_plt_not_loaded 1
8895 #define elf_backend_can_gc_sections 1
8896 #define elf_backend_can_refcount 1
8897 #define elf_backend_rela_normal 1
8899 #define bfd_elf32_mkobject ppc_elf_mkobject
8900 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8901 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8902 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8903 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8904 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8905 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8906 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8908 #define elf_backend_object_p ppc_elf_object_p
8909 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8910 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8911 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8912 #define elf_backend_relocate_section ppc_elf_relocate_section
8913 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8914 #define elf_backend_check_relocs ppc_elf_check_relocs
8915 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8916 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8917 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8918 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8919 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8920 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8921 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8922 #define elf_backend_fake_sections ppc_elf_fake_sections
8923 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8924 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8925 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8926 #define elf_backend_write_core_note ppc_elf_write_core_note
8927 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8928 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8929 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8930 #define elf_backend_write_section ppc_elf_write_section
8931 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8932 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8933 #define elf_backend_action_discarded ppc_elf_action_discarded
8934 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8935 #define elf_backend_post_process_headers _bfd_elf_set_osabi
8937 #include "elf32-target.h"
8939 /* VxWorks Target */
8941 #undef TARGET_LITTLE_SYM
8942 #undef TARGET_LITTLE_NAME
8944 #undef TARGET_BIG_SYM
8945 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8946 #undef TARGET_BIG_NAME
8947 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8949 /* VxWorks uses the elf default section flags for .plt. */
8950 static const struct bfd_elf_special_section *
8951 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
8953 if (sec->name == NULL)
8956 if (strcmp (sec->name, ".plt") == 0)
8957 return _bfd_elf_get_sec_type_attr (abfd, sec);
8959 return ppc_elf_get_sec_type_attr (abfd, sec);
8962 /* Like ppc_elf_link_hash_table_create, but overrides
8963 appropriately for VxWorks. */
8964 static struct bfd_link_hash_table *
8965 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8967 struct bfd_link_hash_table *ret;
8969 ret = ppc_elf_link_hash_table_create (abfd);
8972 struct ppc_elf_link_hash_table *htab
8973 = (struct ppc_elf_link_hash_table *)ret;
8974 htab->is_vxworks = 1;
8975 htab->plt_type = PLT_VXWORKS;
8976 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8977 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8978 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8983 /* Tweak magic VxWorks symbols as they are loaded. */
8985 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8986 struct bfd_link_info *info,
8987 Elf_Internal_Sym *sym,
8988 const char **namep ATTRIBUTE_UNUSED,
8989 flagword *flagsp ATTRIBUTE_UNUSED,
8993 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8997 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
9001 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
9003 ppc_elf_final_write_processing(abfd, linker);
9004 elf_vxworks_final_write_processing(abfd, linker);
9007 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
9009 #undef elf_backend_want_plt_sym
9010 #define elf_backend_want_plt_sym 1
9011 #undef elf_backend_want_got_plt
9012 #define elf_backend_want_got_plt 1
9013 #undef elf_backend_got_symbol_offset
9014 #define elf_backend_got_symbol_offset 0
9015 #undef elf_backend_plt_not_loaded
9016 #define elf_backend_plt_not_loaded 0
9017 #undef elf_backend_plt_readonly
9018 #define elf_backend_plt_readonly 1
9019 #undef elf_backend_got_header_size
9020 #define elf_backend_got_header_size 12
9022 #undef bfd_elf32_get_synthetic_symtab
9024 #undef bfd_elf32_bfd_link_hash_table_create
9025 #define bfd_elf32_bfd_link_hash_table_create \
9026 ppc_elf_vxworks_link_hash_table_create
9027 #undef elf_backend_add_symbol_hook
9028 #define elf_backend_add_symbol_hook \
9029 ppc_elf_vxworks_add_symbol_hook
9030 #undef elf_backend_link_output_symbol_hook
9031 #define elf_backend_link_output_symbol_hook \
9032 elf_vxworks_link_output_symbol_hook
9033 #undef elf_backend_final_write_processing
9034 #define elf_backend_final_write_processing \
9035 ppc_elf_vxworks_final_write_processing
9036 #undef elf_backend_get_sec_type_attr
9037 #define elf_backend_get_sec_type_attr \
9038 ppc_elf_vxworks_get_sec_type_attr
9039 #undef elf_backend_emit_relocs
9040 #define elf_backend_emit_relocs \
9041 elf_vxworks_emit_relocs
9044 #define elf32_bed ppc_elf_vxworks_bed
9045 #undef elf_backend_post_process_headers
9047 #include "elf32-target.h"
projects / platform / upstream / binutils.git / blob