Make tls_mask unsigned in elf32-ppc.c
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
CommitLineData
252b5132 1/* PowerPC-specific support for 32-bit ELF
219d1afa 2 Copyright (C) 1994-2018 Free Software Foundation, Inc.
252b5132
RH
3 Written by Ian Lance Taylor, Cygnus Support.
4
ae9a127f 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
ae9a127f
NC
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
ae9a127f 10 (at your option) any later version.
252b5132 11
ae9a127f
NC
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
252b5132 16
ae9a127f 17 You should have received a copy of the GNU General Public License
fc0bffd6 18 along with this program; if not, write to the
3e110533 19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
53e09e0a 20 Boston, MA 02110-1301, USA. */
252b5132 21
cd123cb7 22
252b5132
RH
23/* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
3db64b00 28#include "sysdep.h"
183e98be 29#include <stdarg.h>
252b5132 30#include "bfd.h"
252b5132
RH
31#include "bfdlink.h"
32#include "libbfd.h"
33#include "elf-bfd.h"
34#include "elf/ppc.h"
7619e7c7 35#include "elf32-ppc.h"
9d8504b1 36#include "elf-vxworks.h"
6177242a 37#include "dwarf2.h"
08dc996f 38#include "opcode/ppc.h"
252b5132 39
b9c361e0
JL
40typedef enum split16_format_type
41{
42 split16a_type = 0,
43 split16d_type
44}
45split16_format_type;
46
f0fe0e16 47/* RELA relocations are used here. */
252b5132 48
252b5132 49static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 51static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 53
70bccea4
AM
54/* Branch prediction bit for branch taken relocs. */
55#define BRANCH_PREDICT_BIT 0x200000
56/* Mask to set RA in memory instructions. */
57#define RA_REGISTER_MASK 0x001f0000
58/* Value to shift register by to insert RA. */
59#define RA_REGISTER_SHIFT 16
252b5132
RH
60
61/* The name of the dynamic interpreter. This is put in the .interp
62 section. */
252b5132
RH
63#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64
d7128ce4 65/* For old-style PLT. */
252b5132
RH
66/* The number of single-slot PLT entries (the rest use two slots). */
67#define PLT_NUM_SINGLE_ENTRIES 8192
68
d7128ce4 69/* For new-style .glink and .plt. */
a6aa5195 70#define GLINK_PLTRESOLVE 16*4
9e390558 71#define GLINK_ENTRY_SIZE(htab, h) \
407aa07c 72 ((4*4 \
9e390558
AM
73 + (h != NULL \
74 && h == htab->tls_get_addr \
75 && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \
76 + (1u << htab->params->plt_stub_align) - 1) \
77 & -(1u << htab->params->plt_stub_align))
d7128ce4 78
9d8504b1
PB
79/* VxWorks uses its own plt layout, filled in by the static linker. */
80
81/* The standard VxWorks PLT entry. */
82#define VXWORKS_PLT_ENTRY_SIZE 32
83static const bfd_vma ppc_elf_vxworks_plt_entry
84 [VXWORKS_PLT_ENTRY_SIZE / 4] =
85 {
07d6d2b8
AM
86 0x3d800000, /* lis r12,0 */
87 0x818c0000, /* lwz r12,0(r12) */
88 0x7d8903a6, /* mtctr r12 */
89 0x4e800420, /* bctr */
90 0x39600000, /* li r11,0 */
91 0x48000000, /* b 14 <.PLT0resolve+0x4> */
92 0x60000000, /* nop */
93 0x60000000, /* nop */
9d8504b1
PB
94 };
95static const bfd_vma ppc_elf_vxworks_pic_plt_entry
96 [VXWORKS_PLT_ENTRY_SIZE / 4] =
97 {
98 0x3d9e0000, /* addis r12,r30,0 */
99 0x818c0000, /* lwz r12,0(r12) */
100 0x7d8903a6, /* mtctr r12 */
101 0x4e800420, /* bctr */
102 0x39600000, /* li r11,0 */
103 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
104 0x60000000, /* nop */
105 0x60000000, /* nop */
106 };
107
108/* The initial VxWorks PLT entry. */
109#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
110static const bfd_vma ppc_elf_vxworks_plt0_entry
111 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
112 {
07d6d2b8
AM
113 0x3d800000, /* lis r12,0 */
114 0x398c0000, /* addi r12,r12,0 */
115 0x800c0008, /* lwz r0,8(r12) */
116 0x7c0903a6, /* mtctr r0 */
117 0x818c0004, /* lwz r12,4(r12) */
118 0x4e800420, /* bctr */
119 0x60000000, /* nop */
120 0x60000000, /* nop */
9d8504b1
PB
121 };
122static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
123 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
124 {
125 0x819e0008, /* lwz r12,8(r30) */
07d6d2b8 126 0x7d8903a6, /* mtctr r12 */
9d8504b1 127 0x819e0004, /* lwz r12,4(r30) */
07d6d2b8
AM
128 0x4e800420, /* bctr */
129 0x60000000, /* nop */
130 0x60000000, /* nop */
131 0x60000000, /* nop */
132 0x60000000, /* nop */
9d8504b1
PB
133 };
134
135/* For executables, we have some additional relocations in
136 .rela.plt.unloaded, for the kernel loader. */
137
138/* The number of non-JMP_SLOT relocations per PLT0 slot. */
139#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
140/* The number of relocations in the PLTResolve slot. */
141#define VXWORKS_PLTRESOLVE_RELOCS 2
de194d85 142/* The number of relocations in the PLTResolve slot when creating
9d8504b1
PB
143 a shared library. */
144#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
145
d7128ce4 146/* Some instructions. */
d7128ce4 147#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM
148#define ADDIS_11_30 0x3d7e0000
149#define ADDIS_12_12 0x3d8c0000
d7128ce4 150#define ADDI_11_11 0x396b0000
d7128ce4 151#define ADD_0_11_11 0x7c0b5a14
a7f2871e 152#define ADD_3_12_2 0x7c6c1214
d7128ce4 153#define ADD_11_0_11 0x7d605a14
a6aa5195 154#define B 0x48000000
da3a2088 155#define BA 0x48000002
a6aa5195 156#define BCL_20_31 0x429f0005
d7128ce4 157#define BCTR 0x4e800420
a7f2871e
AM
158#define BEQLR 0x4d820020
159#define CMPWI_11_0 0x2c0b0000
7e8aeb9a
AM
160#define LIS_11 0x3d600000
161#define LIS_12 0x3d800000
a6aa5195
AM
162#define LWZU_0_12 0x840c0000
163#define LWZ_0_12 0x800c0000
a7f2871e 164#define LWZ_11_3 0x81630000
a6aa5195
AM
165#define LWZ_11_11 0x816b0000
166#define LWZ_11_30 0x817e0000
a7f2871e 167#define LWZ_12_3 0x81830000
a6aa5195 168#define LWZ_12_12 0x818c0000
a7f2871e
AM
169#define MR_0_3 0x7c601b78
170#define MR_3_0 0x7c030378
a6aa5195
AM
171#define MFLR_0 0x7c0802a6
172#define MFLR_12 0x7d8802a6
173#define MTCTR_0 0x7c0903a6
174#define MTCTR_11 0x7d6903a6
175#define MTLR_0 0x7c0803a6
176#define NOP 0x60000000
177#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM
178
179/* Offset of tp and dtp pointers from start of TLS block. */
180#define TP_OFFSET 0x7000
181#define DTP_OFFSET 0x8000
e87d4038
AM
182
183/* The value of a defined global symbol. */
184#define SYM_VAL(SYM) \
185 ((SYM)->root.u.def.section->output_section->vma \
186 + (SYM)->root.u.def.section->output_offset \
187 + (SYM)->root.u.def.value)
7fce784e 188\f
e47cd125 189static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 190
8da6118f 191static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH
192 /* This reloc does nothing. */
193 HOWTO (R_PPC_NONE, /* type */
194 0, /* rightshift */
6346d5ca
AM
195 3, /* size (0 = byte, 1 = short, 2 = long) */
196 0, /* bitsize */
b34976b6 197 FALSE, /* pc_relative */
252b5132 198 0, /* bitpos */
86c95733 199 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
200 bfd_elf_generic_reloc, /* special_function */
201 "R_PPC_NONE", /* name */
b34976b6 202 FALSE, /* partial_inplace */
252b5132
RH
203 0, /* src_mask */
204 0, /* dst_mask */
b34976b6 205 FALSE), /* pcrel_offset */
252b5132
RH
206
207 /* A standard 32 bit relocation. */
208 HOWTO (R_PPC_ADDR32, /* type */
209 0, /* rightshift */
210 2, /* size (0 = byte, 1 = short, 2 = long) */
211 32, /* bitsize */
b34976b6 212 FALSE, /* pc_relative */
252b5132 213 0, /* bitpos */
86c95733 214 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
215 bfd_elf_generic_reloc, /* special_function */
216 "R_PPC_ADDR32", /* name */
b34976b6 217 FALSE, /* partial_inplace */
252b5132
RH
218 0, /* src_mask */
219 0xffffffff, /* dst_mask */
b34976b6 220 FALSE), /* pcrel_offset */
252b5132
RH
221
222 /* An absolute 26 bit branch; the lower two bits must be zero.
223 FIXME: we don't check that, we just clear them. */
224 HOWTO (R_PPC_ADDR24, /* type */
225 0, /* rightshift */
226 2, /* size (0 = byte, 1 = short, 2 = long) */
227 26, /* bitsize */
b34976b6 228 FALSE, /* pc_relative */
252b5132 229 0, /* bitpos */
86c95733 230 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
231 bfd_elf_generic_reloc, /* special_function */
232 "R_PPC_ADDR24", /* name */
b34976b6 233 FALSE, /* partial_inplace */
252b5132
RH
234 0, /* src_mask */
235 0x3fffffc, /* dst_mask */
b34976b6 236 FALSE), /* pcrel_offset */
252b5132
RH
237
238 /* A standard 16 bit relocation. */
239 HOWTO (R_PPC_ADDR16, /* type */
240 0, /* rightshift */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
242 16, /* bitsize */
b34976b6 243 FALSE, /* pc_relative */
252b5132
RH
244 0, /* bitpos */
245 complain_overflow_bitfield, /* complain_on_overflow */
246 bfd_elf_generic_reloc, /* special_function */
247 "R_PPC_ADDR16", /* name */
b34976b6 248 FALSE, /* partial_inplace */
252b5132
RH
249 0, /* src_mask */
250 0xffff, /* dst_mask */
b34976b6 251 FALSE), /* pcrel_offset */
252b5132
RH
252
253 /* A 16 bit relocation without overflow. */
254 HOWTO (R_PPC_ADDR16_LO, /* type */
255 0, /* rightshift */
256 1, /* size (0 = byte, 1 = short, 2 = long) */
257 16, /* bitsize */
b34976b6 258 FALSE, /* pc_relative */
252b5132
RH
259 0, /* bitpos */
260 complain_overflow_dont,/* complain_on_overflow */
261 bfd_elf_generic_reloc, /* special_function */
262 "R_PPC_ADDR16_LO", /* name */
b34976b6 263 FALSE, /* partial_inplace */
252b5132
RH
264 0, /* src_mask */
265 0xffff, /* dst_mask */
b34976b6 266 FALSE), /* pcrel_offset */
252b5132
RH
267
268 /* The high order 16 bits of an address. */
269 HOWTO (R_PPC_ADDR16_HI, /* type */
270 16, /* rightshift */
271 1, /* size (0 = byte, 1 = short, 2 = long) */
272 16, /* bitsize */
b34976b6 273 FALSE, /* pc_relative */
252b5132
RH
274 0, /* bitpos */
275 complain_overflow_dont, /* complain_on_overflow */
276 bfd_elf_generic_reloc, /* special_function */
277 "R_PPC_ADDR16_HI", /* name */
b34976b6 278 FALSE, /* partial_inplace */
252b5132
RH
279 0, /* src_mask */
280 0xffff, /* dst_mask */
b34976b6 281 FALSE), /* pcrel_offset */
252b5132
RH
282
283 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 284 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH
285 HOWTO (R_PPC_ADDR16_HA, /* type */
286 16, /* rightshift */
287 1, /* size (0 = byte, 1 = short, 2 = long) */
288 16, /* bitsize */
b34976b6 289 FALSE, /* pc_relative */
252b5132
RH
290 0, /* bitpos */
291 complain_overflow_dont, /* complain_on_overflow */
292 ppc_elf_addr16_ha_reloc, /* special_function */
293 "R_PPC_ADDR16_HA", /* name */
b34976b6 294 FALSE, /* partial_inplace */
252b5132
RH
295 0, /* src_mask */
296 0xffff, /* dst_mask */
b34976b6 297 FALSE), /* pcrel_offset */
252b5132
RH
298
299 /* An absolute 16 bit branch; the lower two bits must be zero.
300 FIXME: we don't check that, we just clear them. */
301 HOWTO (R_PPC_ADDR14, /* type */
302 0, /* rightshift */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
304 16, /* bitsize */
b34976b6 305 FALSE, /* pc_relative */
252b5132 306 0, /* bitpos */
86c95733 307 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
308 bfd_elf_generic_reloc, /* special_function */
309 "R_PPC_ADDR14", /* name */
b34976b6 310 FALSE, /* partial_inplace */
252b5132
RH
311 0, /* src_mask */
312 0xfffc, /* dst_mask */
b34976b6 313 FALSE), /* pcrel_offset */
252b5132
RH
314
315 /* An absolute 16 bit branch, for which bit 10 should be set to
316 indicate that the branch is expected to be taken. The lower two
8da6118f 317 bits must be zero. */
252b5132
RH
318 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
319 0, /* rightshift */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
321 16, /* bitsize */
b34976b6 322 FALSE, /* pc_relative */
252b5132 323 0, /* bitpos */
86c95733 324 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
325 bfd_elf_generic_reloc, /* special_function */
326 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 327 FALSE, /* partial_inplace */
252b5132
RH
328 0, /* src_mask */
329 0xfffc, /* dst_mask */
b34976b6 330 FALSE), /* pcrel_offset */
252b5132
RH
331
332 /* An absolute 16 bit branch, for which bit 10 should be set to
333 indicate that the branch is not expected to be taken. The lower
334 two bits must be zero. */
335 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
336 0, /* rightshift */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
338 16, /* bitsize */
b34976b6 339 FALSE, /* pc_relative */
252b5132 340 0, /* bitpos */
86c95733 341 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 344 FALSE, /* partial_inplace */
252b5132
RH
345 0, /* src_mask */
346 0xfffc, /* dst_mask */
b34976b6 347 FALSE), /* pcrel_offset */
252b5132 348
8da6118f 349 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH
350 HOWTO (R_PPC_REL24, /* type */
351 0, /* rightshift */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
353 26, /* bitsize */
b34976b6 354 TRUE, /* pc_relative */
252b5132
RH
355 0, /* bitpos */
356 complain_overflow_signed, /* complain_on_overflow */
357 bfd_elf_generic_reloc, /* special_function */
358 "R_PPC_REL24", /* name */
b34976b6 359 FALSE, /* partial_inplace */
252b5132
RH
360 0, /* src_mask */
361 0x3fffffc, /* dst_mask */
b34976b6 362 TRUE), /* pcrel_offset */
252b5132 363
8da6118f 364 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH
365 HOWTO (R_PPC_REL14, /* type */
366 0, /* rightshift */
367 2, /* size (0 = byte, 1 = short, 2 = long) */
368 16, /* bitsize */
b34976b6 369 TRUE, /* pc_relative */
252b5132
RH
370 0, /* bitpos */
371 complain_overflow_signed, /* complain_on_overflow */
372 bfd_elf_generic_reloc, /* special_function */
373 "R_PPC_REL14", /* name */
b34976b6 374 FALSE, /* partial_inplace */
252b5132
RH
375 0, /* src_mask */
376 0xfffc, /* dst_mask */
b34976b6 377 TRUE), /* pcrel_offset */
252b5132 378
8da6118f 379 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
380 the branch is expected to be taken. The lower two bits must be
381 zero. */
382 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
383 0, /* rightshift */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
385 16, /* bitsize */
b34976b6 386 TRUE, /* pc_relative */
252b5132
RH
387 0, /* bitpos */
388 complain_overflow_signed, /* complain_on_overflow */
389 bfd_elf_generic_reloc, /* special_function */
390 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 391 FALSE, /* partial_inplace */
252b5132
RH
392 0, /* src_mask */
393 0xfffc, /* dst_mask */
b34976b6 394 TRUE), /* pcrel_offset */
252b5132 395
8da6118f 396 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
397 the branch is not expected to be taken. The lower two bits must
398 be zero. */
399 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
400 0, /* rightshift */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
402 16, /* bitsize */
b34976b6 403 TRUE, /* pc_relative */
252b5132
RH
404 0, /* bitpos */
405 complain_overflow_signed, /* complain_on_overflow */
406 bfd_elf_generic_reloc, /* special_function */
407 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 408 FALSE, /* partial_inplace */
252b5132
RH
409 0, /* src_mask */
410 0xfffc, /* dst_mask */
b34976b6 411 TRUE), /* pcrel_offset */
252b5132
RH
412
413 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
414 symbol. */
415 HOWTO (R_PPC_GOT16, /* type */
416 0, /* rightshift */
417 1, /* size (0 = byte, 1 = short, 2 = long) */
418 16, /* bitsize */
b34976b6 419 FALSE, /* pc_relative */
252b5132
RH
420 0, /* bitpos */
421 complain_overflow_signed, /* complain_on_overflow */
3ce51288 422 ppc_elf_unhandled_reloc, /* special_function */
252b5132 423 "R_PPC_GOT16", /* name */
b34976b6 424 FALSE, /* partial_inplace */
252b5132
RH
425 0, /* src_mask */
426 0xffff, /* dst_mask */
b34976b6 427 FALSE), /* pcrel_offset */
252b5132
RH
428
429 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
430 the symbol. */
431 HOWTO (R_PPC_GOT16_LO, /* type */
432 0, /* rightshift */
433 1, /* size (0 = byte, 1 = short, 2 = long) */
434 16, /* bitsize */
b34976b6 435 FALSE, /* pc_relative */
252b5132
RH
436 0, /* bitpos */
437 complain_overflow_dont, /* complain_on_overflow */
3ce51288 438 ppc_elf_unhandled_reloc, /* special_function */
252b5132 439 "R_PPC_GOT16_LO", /* name */
b34976b6 440 FALSE, /* partial_inplace */
252b5132
RH
441 0, /* src_mask */
442 0xffff, /* dst_mask */
b34976b6 443 FALSE), /* pcrel_offset */
252b5132
RH
444
445 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
446 the symbol. */
447 HOWTO (R_PPC_GOT16_HI, /* type */
448 16, /* rightshift */
449 1, /* size (0 = byte, 1 = short, 2 = long) */
450 16, /* bitsize */
b34976b6 451 FALSE, /* pc_relative */
252b5132 452 0, /* bitpos */
86c95733 453 complain_overflow_dont, /* complain_on_overflow */
3ce51288 454 ppc_elf_unhandled_reloc, /* special_function */
252b5132 455 "R_PPC_GOT16_HI", /* name */
b34976b6 456 FALSE, /* partial_inplace */
252b5132
RH
457 0, /* src_mask */
458 0xffff, /* dst_mask */
b34976b6 459 FALSE), /* pcrel_offset */
252b5132
RH
460
461 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
462 the symbol. */
463 HOWTO (R_PPC_GOT16_HA, /* type */
464 16, /* rightshift */
465 1, /* size (0 = byte, 1 = short, 2 = long) */
466 16, /* bitsize */
b34976b6 467 FALSE, /* pc_relative */
252b5132 468 0, /* bitpos */
86c95733 469 complain_overflow_dont, /* complain_on_overflow */
3ce51288 470 ppc_elf_unhandled_reloc, /* special_function */
252b5132 471 "R_PPC_GOT16_HA", /* name */
b34976b6 472 FALSE, /* partial_inplace */
252b5132
RH
473 0, /* src_mask */
474 0xffff, /* dst_mask */
b34976b6 475 FALSE), /* pcrel_offset */
252b5132
RH
476
477 /* Like R_PPC_REL24, but referring to the procedure linkage table
478 entry for the symbol. */
479 HOWTO (R_PPC_PLTREL24, /* type */
480 0, /* rightshift */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
482 26, /* bitsize */
b34976b6 483 TRUE, /* pc_relative */
252b5132 484 0, /* bitpos */
3ce51288
AM
485 complain_overflow_signed, /* complain_on_overflow */
486 ppc_elf_unhandled_reloc, /* special_function */
252b5132 487 "R_PPC_PLTREL24", /* name */
b34976b6 488 FALSE, /* partial_inplace */
252b5132
RH
489 0, /* src_mask */
490 0x3fffffc, /* dst_mask */
b34976b6 491 TRUE), /* pcrel_offset */
252b5132
RH
492
493 /* This is used only by the dynamic linker. The symbol should exist
494 both in the object being run and in some shared library. The
495 dynamic linker copies the data addressed by the symbol from the
496 shared library into the object, because the object being
497 run has to have the data at some particular address. */
498 HOWTO (R_PPC_COPY, /* type */
499 0, /* rightshift */
500 2, /* size (0 = byte, 1 = short, 2 = long) */
501 32, /* bitsize */
b34976b6 502 FALSE, /* pc_relative */
252b5132 503 0, /* bitpos */
86c95733 504 complain_overflow_dont, /* complain_on_overflow */
3ce51288 505 ppc_elf_unhandled_reloc, /* special_function */
252b5132 506 "R_PPC_COPY", /* name */
b34976b6 507 FALSE, /* partial_inplace */
252b5132
RH
508 0, /* src_mask */
509 0, /* dst_mask */
b34976b6 510 FALSE), /* pcrel_offset */
252b5132
RH
511
512 /* Like R_PPC_ADDR32, but used when setting global offset table
513 entries. */
514 HOWTO (R_PPC_GLOB_DAT, /* type */
515 0, /* rightshift */
516 2, /* size (0 = byte, 1 = short, 2 = long) */
517 32, /* bitsize */
b34976b6 518 FALSE, /* pc_relative */
252b5132 519 0, /* bitpos */
86c95733 520 complain_overflow_dont, /* complain_on_overflow */
3ce51288 521 ppc_elf_unhandled_reloc, /* special_function */
252b5132 522 "R_PPC_GLOB_DAT", /* name */
b34976b6 523 FALSE, /* partial_inplace */
252b5132
RH
524 0, /* src_mask */
525 0xffffffff, /* dst_mask */
b34976b6 526 FALSE), /* pcrel_offset */
252b5132
RH
527
528 /* Marks a procedure linkage table entry for a symbol. */
529 HOWTO (R_PPC_JMP_SLOT, /* type */
530 0, /* rightshift */
531 2, /* size (0 = byte, 1 = short, 2 = long) */
532 32, /* bitsize */
b34976b6 533 FALSE, /* pc_relative */
252b5132 534 0, /* bitpos */
86c95733 535 complain_overflow_dont, /* complain_on_overflow */
3ce51288 536 ppc_elf_unhandled_reloc, /* special_function */
252b5132 537 "R_PPC_JMP_SLOT", /* name */
b34976b6 538 FALSE, /* partial_inplace */
252b5132
RH
539 0, /* src_mask */
540 0, /* dst_mask */
b34976b6 541 FALSE), /* pcrel_offset */
252b5132
RH
542
543 /* Used only by the dynamic linker. When the object is run, this
544 longword is set to the load address of the object, plus the
545 addend. */
546 HOWTO (R_PPC_RELATIVE, /* type */
547 0, /* rightshift */
548 2, /* size (0 = byte, 1 = short, 2 = long) */
549 32, /* bitsize */
b34976b6 550 FALSE, /* pc_relative */
252b5132 551 0, /* bitpos */
86c95733 552 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
553 bfd_elf_generic_reloc, /* special_function */
554 "R_PPC_RELATIVE", /* name */
b34976b6 555 FALSE, /* partial_inplace */
252b5132
RH
556 0, /* src_mask */
557 0xffffffff, /* dst_mask */
b34976b6 558 FALSE), /* pcrel_offset */
252b5132
RH
559
560 /* Like R_PPC_REL24, but uses the value of the symbol within the
561 object rather than the final value. Normally used for
562 _GLOBAL_OFFSET_TABLE_. */
563 HOWTO (R_PPC_LOCAL24PC, /* type */
564 0, /* rightshift */
565 2, /* size (0 = byte, 1 = short, 2 = long) */
566 26, /* bitsize */
b34976b6 567 TRUE, /* pc_relative */
252b5132
RH
568 0, /* bitpos */
569 complain_overflow_signed, /* complain_on_overflow */
570 bfd_elf_generic_reloc, /* special_function */
571 "R_PPC_LOCAL24PC", /* name */
b34976b6 572 FALSE, /* partial_inplace */
252b5132
RH
573 0, /* src_mask */
574 0x3fffffc, /* dst_mask */
b34976b6 575 TRUE), /* pcrel_offset */
252b5132
RH
576
577 /* Like R_PPC_ADDR32, but may be unaligned. */
578 HOWTO (R_PPC_UADDR32, /* type */
579 0, /* rightshift */
580 2, /* size (0 = byte, 1 = short, 2 = long) */
581 32, /* bitsize */
b34976b6 582 FALSE, /* pc_relative */
252b5132 583 0, /* bitpos */
86c95733 584 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
585 bfd_elf_generic_reloc, /* special_function */
586 "R_PPC_UADDR32", /* name */
b34976b6 587 FALSE, /* partial_inplace */
252b5132
RH
588 0, /* src_mask */
589 0xffffffff, /* dst_mask */
b34976b6 590 FALSE), /* pcrel_offset */
252b5132
RH
591
592 /* Like R_PPC_ADDR16, but may be unaligned. */
593 HOWTO (R_PPC_UADDR16, /* type */
594 0, /* rightshift */
595 1, /* size (0 = byte, 1 = short, 2 = long) */
596 16, /* bitsize */
b34976b6 597 FALSE, /* pc_relative */
252b5132
RH
598 0, /* bitpos */
599 complain_overflow_bitfield, /* complain_on_overflow */
600 bfd_elf_generic_reloc, /* special_function */
601 "R_PPC_UADDR16", /* name */
b34976b6 602 FALSE, /* partial_inplace */
252b5132
RH
603 0, /* src_mask */
604 0xffff, /* dst_mask */
b34976b6 605 FALSE), /* pcrel_offset */
252b5132
RH
606
607 /* 32-bit PC relative */
608 HOWTO (R_PPC_REL32, /* type */
609 0, /* rightshift */
610 2, /* size (0 = byte, 1 = short, 2 = long) */
611 32, /* bitsize */
b34976b6 612 TRUE, /* pc_relative */
252b5132 613 0, /* bitpos */
86c95733 614 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
615 bfd_elf_generic_reloc, /* special_function */
616 "R_PPC_REL32", /* name */
b34976b6 617 FALSE, /* partial_inplace */
252b5132
RH
618 0, /* src_mask */
619 0xffffffff, /* dst_mask */
b34976b6 620 TRUE), /* pcrel_offset */
252b5132
RH
621
622 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 623 FIXME: not supported. */
252b5132
RH
624 HOWTO (R_PPC_PLT32, /* type */
625 0, /* rightshift */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
627 32, /* bitsize */
b34976b6 628 FALSE, /* pc_relative */
252b5132 629 0, /* bitpos */
86c95733 630 complain_overflow_dont, /* complain_on_overflow */
3ce51288 631 ppc_elf_unhandled_reloc, /* special_function */
252b5132 632 "R_PPC_PLT32", /* name */
b34976b6 633 FALSE, /* partial_inplace */
252b5132
RH
634 0, /* src_mask */
635 0, /* dst_mask */
b34976b6 636 FALSE), /* pcrel_offset */
252b5132
RH
637
638 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 639 FIXME: not supported. */
252b5132
RH
640 HOWTO (R_PPC_PLTREL32, /* type */
641 0, /* rightshift */
642 2, /* size (0 = byte, 1 = short, 2 = long) */
643 32, /* bitsize */
b34976b6 644 TRUE, /* pc_relative */
252b5132 645 0, /* bitpos */
86c95733 646 complain_overflow_dont, /* complain_on_overflow */
3ce51288 647 ppc_elf_unhandled_reloc, /* special_function */
252b5132 648 "R_PPC_PLTREL32", /* name */
b34976b6 649 FALSE, /* partial_inplace */
252b5132
RH
650 0, /* src_mask */
651 0, /* dst_mask */
b34976b6 652 TRUE), /* pcrel_offset */
252b5132
RH
653
654 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
655 the symbol. */
656 HOWTO (R_PPC_PLT16_LO, /* type */
657 0, /* rightshift */
658 1, /* size (0 = byte, 1 = short, 2 = long) */
659 16, /* bitsize */
b34976b6 660 FALSE, /* pc_relative */
252b5132
RH
661 0, /* bitpos */
662 complain_overflow_dont, /* complain_on_overflow */
3ce51288 663 ppc_elf_unhandled_reloc, /* special_function */
252b5132 664 "R_PPC_PLT16_LO", /* name */
b34976b6 665 FALSE, /* partial_inplace */
252b5132
RH
666 0, /* src_mask */
667 0xffff, /* dst_mask */
b34976b6 668 FALSE), /* pcrel_offset */
252b5132
RH
669
670 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
671 the symbol. */
672 HOWTO (R_PPC_PLT16_HI, /* type */
673 16, /* rightshift */
674 1, /* size (0 = byte, 1 = short, 2 = long) */
675 16, /* bitsize */
b34976b6 676 FALSE, /* pc_relative */
252b5132 677 0, /* bitpos */
86c95733 678 complain_overflow_dont, /* complain_on_overflow */
3ce51288 679 ppc_elf_unhandled_reloc, /* special_function */
252b5132 680 "R_PPC_PLT16_HI", /* name */
b34976b6 681 FALSE, /* partial_inplace */
252b5132
RH
682 0, /* src_mask */
683 0xffff, /* dst_mask */
b34976b6 684 FALSE), /* pcrel_offset */
252b5132
RH
685
686 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
687 the symbol. */
688 HOWTO (R_PPC_PLT16_HA, /* type */
689 16, /* rightshift */
690 1, /* size (0 = byte, 1 = short, 2 = long) */
691 16, /* bitsize */
b34976b6 692 FALSE, /* pc_relative */
252b5132 693 0, /* bitpos */
86c95733 694 complain_overflow_dont, /* complain_on_overflow */
3ce51288 695 ppc_elf_unhandled_reloc, /* special_function */
252b5132 696 "R_PPC_PLT16_HA", /* name */
b34976b6 697 FALSE, /* partial_inplace */
252b5132
RH
698 0, /* src_mask */
699 0xffff, /* dst_mask */
b34976b6 700 FALSE), /* pcrel_offset */
252b5132
RH
701
702 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
703 small data items. */
704 HOWTO (R_PPC_SDAREL16, /* type */
705 0, /* rightshift */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
707 16, /* bitsize */
b34976b6 708 FALSE, /* pc_relative */
252b5132
RH
709 0, /* bitpos */
710 complain_overflow_signed, /* complain_on_overflow */
3ce51288 711 ppc_elf_unhandled_reloc, /* special_function */
252b5132 712 "R_PPC_SDAREL16", /* name */
b34976b6 713 FALSE, /* partial_inplace */
252b5132
RH
714 0, /* src_mask */
715 0xffff, /* dst_mask */
b34976b6 716 FALSE), /* pcrel_offset */
252b5132 717
c061c2d8 718 /* 16-bit section relative relocation. */
252b5132
RH
719 HOWTO (R_PPC_SECTOFF, /* type */
720 0, /* rightshift */
c061c2d8
AM
721 1, /* size (0 = byte, 1 = short, 2 = long) */
722 16, /* bitsize */
b34976b6 723 FALSE, /* pc_relative */
252b5132 724 0, /* bitpos */
86c95733 725 complain_overflow_signed, /* complain_on_overflow */
3ce51288 726 ppc_elf_unhandled_reloc, /* special_function */
252b5132 727 "R_PPC_SECTOFF", /* name */
b34976b6 728 FALSE, /* partial_inplace */
252b5132 729 0, /* src_mask */
c061c2d8 730 0xffff, /* dst_mask */
b34976b6 731 FALSE), /* pcrel_offset */
252b5132 732
c3668558 733 /* 16-bit lower half section relative relocation. */
252b5132
RH
734 HOWTO (R_PPC_SECTOFF_LO, /* type */
735 0, /* rightshift */
736 1, /* size (0 = byte, 1 = short, 2 = long) */
737 16, /* bitsize */
b34976b6 738 FALSE, /* pc_relative */
252b5132
RH
739 0, /* bitpos */
740 complain_overflow_dont, /* complain_on_overflow */
3ce51288 741 ppc_elf_unhandled_reloc, /* special_function */
252b5132 742 "R_PPC_SECTOFF_LO", /* name */
b34976b6 743 FALSE, /* partial_inplace */
252b5132
RH
744 0, /* src_mask */
745 0xffff, /* dst_mask */
b34976b6 746 FALSE), /* pcrel_offset */
252b5132 747
c3668558 748 /* 16-bit upper half section relative relocation. */
252b5132
RH
749 HOWTO (R_PPC_SECTOFF_HI, /* type */
750 16, /* rightshift */
751 1, /* size (0 = byte, 1 = short, 2 = long) */
752 16, /* bitsize */
b34976b6 753 FALSE, /* pc_relative */
252b5132 754 0, /* bitpos */
86c95733 755 complain_overflow_dont, /* complain_on_overflow */
3ce51288 756 ppc_elf_unhandled_reloc, /* special_function */
252b5132 757 "R_PPC_SECTOFF_HI", /* name */
b34976b6 758 FALSE, /* partial_inplace */
252b5132
RH
759 0, /* src_mask */
760 0xffff, /* dst_mask */
b34976b6 761 FALSE), /* pcrel_offset */
252b5132 762
c3668558 763 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH
764 HOWTO (R_PPC_SECTOFF_HA, /* type */
765 16, /* rightshift */
766 1, /* size (0 = byte, 1 = short, 2 = long) */
767 16, /* bitsize */
b34976b6 768 FALSE, /* pc_relative */
252b5132 769 0, /* bitpos */
86c95733 770 complain_overflow_dont, /* complain_on_overflow */
3ce51288 771 ppc_elf_unhandled_reloc, /* special_function */
252b5132 772 "R_PPC_SECTOFF_HA", /* name */
b34976b6 773 FALSE, /* partial_inplace */
252b5132
RH
774 0, /* src_mask */
775 0xffff, /* dst_mask */
b34976b6 776 FALSE), /* pcrel_offset */
252b5132 777
727fc41e 778 /* Marker relocs for TLS. */
7619e7c7 779 HOWTO (R_PPC_TLS,
252b5132
RH
780 0, /* rightshift */
781 2, /* size (0 = byte, 1 = short, 2 = long) */
782 32, /* bitsize */
b34976b6 783 FALSE, /* pc_relative */
252b5132 784 0, /* bitpos */
7619e7c7 785 complain_overflow_dont, /* complain_on_overflow */
252b5132 786 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM
787 "R_PPC_TLS", /* name */
788 FALSE, /* partial_inplace */
789 0, /* src_mask */
790 0, /* dst_mask */
791 FALSE), /* pcrel_offset */
792
727fc41e
AM
793 HOWTO (R_PPC_TLSGD,
794 0, /* rightshift */
795 2, /* size (0 = byte, 1 = short, 2 = long) */
796 32, /* bitsize */
797 FALSE, /* pc_relative */
798 0, /* bitpos */
799 complain_overflow_dont, /* complain_on_overflow */
800 bfd_elf_generic_reloc, /* special_function */
801 "R_PPC_TLSGD", /* name */
802 FALSE, /* partial_inplace */
803 0, /* src_mask */
804 0, /* dst_mask */
805 FALSE), /* pcrel_offset */
806
807 HOWTO (R_PPC_TLSLD,
808 0, /* rightshift */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
810 32, /* bitsize */
811 FALSE, /* pc_relative */
812 0, /* bitpos */
813 complain_overflow_dont, /* complain_on_overflow */
814 bfd_elf_generic_reloc, /* special_function */
815 "R_PPC_TLSLD", /* name */
816 FALSE, /* partial_inplace */
817 0, /* src_mask */
818 0, /* dst_mask */
819 FALSE), /* pcrel_offset */
820
7619e7c7
AM
821 /* Computes the load module index of the load module that contains the
822 definition of its TLS sym. */
823 HOWTO (R_PPC_DTPMOD32,
824 0, /* rightshift */
825 2, /* size (0 = byte, 1 = short, 2 = long) */
826 32, /* bitsize */
827 FALSE, /* pc_relative */
828 0, /* bitpos */
829 complain_overflow_dont, /* complain_on_overflow */
830 ppc_elf_unhandled_reloc, /* special_function */
831 "R_PPC_DTPMOD32", /* name */
b34976b6 832 FALSE, /* partial_inplace */
252b5132
RH
833 0, /* src_mask */
834 0xffffffff, /* dst_mask */
b34976b6 835 FALSE), /* pcrel_offset */
252b5132 836
7619e7c7
AM
837 /* Computes a dtv-relative displacement, the difference between the value
838 of sym+add and the base address of the thread-local storage block that
839 contains the definition of sym, minus 0x8000. */
840 HOWTO (R_PPC_DTPREL32,
841 0, /* rightshift */
842 2, /* size (0 = byte, 1 = short, 2 = long) */
843 32, /* bitsize */
844 FALSE, /* pc_relative */
845 0, /* bitpos */
846 complain_overflow_dont, /* complain_on_overflow */
847 ppc_elf_unhandled_reloc, /* special_function */
848 "R_PPC_DTPREL32", /* name */
849 FALSE, /* partial_inplace */
850 0, /* src_mask */
851 0xffffffff, /* dst_mask */
852 FALSE), /* pcrel_offset */
853
854 /* A 16 bit dtprel reloc. */
855 HOWTO (R_PPC_DTPREL16,
252b5132
RH
856 0, /* rightshift */
857 1, /* size (0 = byte, 1 = short, 2 = long) */
858 16, /* bitsize */
b34976b6 859 FALSE, /* pc_relative */
252b5132 860 0, /* bitpos */
7619e7c7
AM
861 complain_overflow_signed, /* complain_on_overflow */
862 ppc_elf_unhandled_reloc, /* special_function */
863 "R_PPC_DTPREL16", /* name */
b34976b6 864 FALSE, /* partial_inplace */
252b5132
RH
865 0, /* src_mask */
866 0xffff, /* dst_mask */
b34976b6 867 FALSE), /* pcrel_offset */
252b5132 868
7619e7c7
AM
869 /* Like DTPREL16, but no overflow. */
870 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH
871 0, /* rightshift */
872 1, /* size (0 = byte, 1 = short, 2 = long) */
873 16, /* bitsize */
b34976b6 874 FALSE, /* pc_relative */
252b5132 875 0, /* bitpos */
7619e7c7
AM
876 complain_overflow_dont, /* complain_on_overflow */
877 ppc_elf_unhandled_reloc, /* special_function */
878 "R_PPC_DTPREL16_LO", /* name */
b34976b6 879 FALSE, /* partial_inplace */
252b5132
RH
880 0, /* src_mask */
881 0xffff, /* dst_mask */
b34976b6 882 FALSE), /* pcrel_offset */
252b5132 883
7619e7c7
AM
884 /* Like DTPREL16_LO, but next higher group of 16 bits. */
885 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH
886 16, /* rightshift */
887 1, /* size (0 = byte, 1 = short, 2 = long) */
888 16, /* bitsize */
b34976b6 889 FALSE, /* pc_relative */
252b5132
RH
890 0, /* bitpos */
891 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
892 ppc_elf_unhandled_reloc, /* special_function */
893 "R_PPC_DTPREL16_HI", /* name */
b34976b6 894 FALSE, /* partial_inplace */
252b5132
RH
895 0, /* src_mask */
896 0xffff, /* dst_mask */
b34976b6 897 FALSE), /* pcrel_offset */
252b5132 898
7619e7c7
AM
899 /* Like DTPREL16_HI, but adjust for low 16 bits. */
900 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH
901 16, /* rightshift */
902 1, /* size (0 = byte, 1 = short, 2 = long) */
903 16, /* bitsize */
b34976b6 904 FALSE, /* pc_relative */
252b5132
RH
905 0, /* bitpos */
906 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
907 ppc_elf_unhandled_reloc, /* special_function */
908 "R_PPC_DTPREL16_HA", /* name */
b34976b6 909 FALSE, /* partial_inplace */
252b5132
RH
910 0, /* src_mask */
911 0xffff, /* dst_mask */
b34976b6 912 FALSE), /* pcrel_offset */
252b5132 913
7619e7c7
AM
914 /* Computes a tp-relative displacement, the difference between the value of
915 sym+add and the value of the thread pointer (r13). */
916 HOWTO (R_PPC_TPREL32,
917 0, /* rightshift */
918 2, /* size (0 = byte, 1 = short, 2 = long) */
919 32, /* bitsize */
920 FALSE, /* pc_relative */
921 0, /* bitpos */
922 complain_overflow_dont, /* complain_on_overflow */
923 ppc_elf_unhandled_reloc, /* special_function */
924 "R_PPC_TPREL32", /* name */
925 FALSE, /* partial_inplace */
926 0, /* src_mask */
927 0xffffffff, /* dst_mask */
928 FALSE), /* pcrel_offset */
929
930 /* A 16 bit tprel reloc. */
931 HOWTO (R_PPC_TPREL16,
252b5132
RH
932 0, /* rightshift */
933 1, /* size (0 = byte, 1 = short, 2 = long) */
934 16, /* bitsize */
b34976b6 935 FALSE, /* pc_relative */
252b5132 936 0, /* bitpos */
7619e7c7
AM
937 complain_overflow_signed, /* complain_on_overflow */
938 ppc_elf_unhandled_reloc, /* special_function */
939 "R_PPC_TPREL16", /* name */
b34976b6 940 FALSE, /* partial_inplace */
252b5132
RH
941 0, /* src_mask */
942 0xffff, /* dst_mask */
b34976b6 943 FALSE), /* pcrel_offset */
252b5132 944
7619e7c7
AM
945 /* Like TPREL16, but no overflow. */
946 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH
947 0, /* rightshift */
948 1, /* size (0 = byte, 1 = short, 2 = long) */
949 16, /* bitsize */
b34976b6 950 FALSE, /* pc_relative */
252b5132 951 0, /* bitpos */
7619e7c7
AM
952 complain_overflow_dont, /* complain_on_overflow */
953 ppc_elf_unhandled_reloc, /* special_function */
954 "R_PPC_TPREL16_LO", /* name */
b34976b6 955 FALSE, /* partial_inplace */
252b5132
RH
956 0, /* src_mask */
957 0xffff, /* dst_mask */
b34976b6 958 FALSE), /* pcrel_offset */
252b5132 959
7619e7c7
AM
960 /* Like TPREL16_LO, but next higher group of 16 bits. */
961 HOWTO (R_PPC_TPREL16_HI,
962 16, /* rightshift */
963 1, /* size (0 = byte, 1 = short, 2 = long) */
964 16, /* bitsize */
965 FALSE, /* pc_relative */
966 0, /* bitpos */
967 complain_overflow_dont, /* complain_on_overflow */
968 ppc_elf_unhandled_reloc, /* special_function */
969 "R_PPC_TPREL16_HI", /* name */
970 FALSE, /* partial_inplace */
971 0, /* src_mask */
972 0xffff, /* dst_mask */
973 FALSE), /* pcrel_offset */
974
975 /* Like TPREL16_HI, but adjust for low 16 bits. */
976 HOWTO (R_PPC_TPREL16_HA,
977 16, /* rightshift */
978 1, /* size (0 = byte, 1 = short, 2 = long) */
979 16, /* bitsize */
980 FALSE, /* pc_relative */
981 0, /* bitpos */
982 complain_overflow_dont, /* complain_on_overflow */
983 ppc_elf_unhandled_reloc, /* special_function */
984 "R_PPC_TPREL16_HA", /* name */
985 FALSE, /* partial_inplace */
986 0, /* src_mask */
987 0xffff, /* dst_mask */
988 FALSE), /* pcrel_offset */
989
990 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
991 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
992 to the first entry. */
993 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH
994 0, /* rightshift */
995 1, /* size (0 = byte, 1 = short, 2 = long) */
996 16, /* bitsize */
b34976b6 997 FALSE, /* pc_relative */
252b5132
RH
998 0, /* bitpos */
999 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1000 ppc_elf_unhandled_reloc, /* special_function */
1001 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 1002 FALSE, /* partial_inplace */
252b5132
RH
1003 0, /* src_mask */
1004 0xffff, /* dst_mask */
b34976b6 1005 FALSE), /* pcrel_offset */
252b5132 1006
7619e7c7
AM
1007 /* Like GOT_TLSGD16, but no overflow. */
1008 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 1009 0, /* rightshift */
7619e7c7 1010 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 1011 16, /* bitsize */
b34976b6 1012 FALSE, /* pc_relative */
252b5132 1013 0, /* bitpos */
7619e7c7
AM
1014 complain_overflow_dont, /* complain_on_overflow */
1015 ppc_elf_unhandled_reloc, /* special_function */
1016 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 1017 FALSE, /* partial_inplace */
252b5132
RH
1018 0, /* src_mask */
1019 0xffff, /* dst_mask */
b34976b6 1020 FALSE), /* pcrel_offset */
252b5132 1021
7619e7c7
AM
1022 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1023 HOWTO (R_PPC_GOT_TLSGD16_HI,
1024 16, /* rightshift */
1025 1, /* size (0 = byte, 1 = short, 2 = long) */
1026 16, /* bitsize */
1027 FALSE, /* pc_relative */
1028 0, /* bitpos */
1029 complain_overflow_dont, /* complain_on_overflow */
1030 ppc_elf_unhandled_reloc, /* special_function */
1031 "R_PPC_GOT_TLSGD16_HI", /* name */
1032 FALSE, /* partial_inplace */
1033 0, /* src_mask */
1034 0xffff, /* dst_mask */
1035 FALSE), /* pcrel_offset */
252b5132 1036
7619e7c7
AM
1037 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1038 HOWTO (R_PPC_GOT_TLSGD16_HA,
1039 16, /* rightshift */
1040 1, /* size (0 = byte, 1 = short, 2 = long) */
1041 16, /* bitsize */
1042 FALSE, /* pc_relative */
1043 0, /* bitpos */
1044 complain_overflow_dont, /* complain_on_overflow */
1045 ppc_elf_unhandled_reloc, /* special_function */
1046 "R_PPC_GOT_TLSGD16_HA", /* name */
1047 FALSE, /* partial_inplace */
1048 0, /* src_mask */
1049 0xffff, /* dst_mask */
1050 FALSE), /* pcrel_offset */
1051
1052 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1053 with values (sym+add)@dtpmod and zero, and computes the offset to the
1054 first entry. */
1055 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH
1056 0, /* rightshift */
1057 1, /* size (0 = byte, 1 = short, 2 = long) */
1058 16, /* bitsize */
7619e7c7 1059 FALSE, /* pc_relative */
252b5132
RH
1060 0, /* bitpos */
1061 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1062 ppc_elf_unhandled_reloc, /* special_function */
1063 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1064 FALSE, /* partial_inplace */
252b5132
RH
1065 0, /* src_mask */
1066 0xffff, /* dst_mask */
b34976b6 1067 FALSE), /* pcrel_offset */
252b5132 1068
7619e7c7
AM
1069 /* Like GOT_TLSLD16, but no overflow. */
1070 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1071 0, /* rightshift */
7619e7c7
AM
1072 1, /* size (0 = byte, 1 = short, 2 = long) */
1073 16, /* bitsize */
b34976b6 1074 FALSE, /* pc_relative */
252b5132
RH
1075 0, /* bitpos */
1076 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1077 ppc_elf_unhandled_reloc, /* special_function */
1078 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1079 FALSE, /* partial_inplace */
252b5132 1080 0, /* src_mask */
7619e7c7 1081 0xffff, /* dst_mask */
b34976b6 1082 FALSE), /* pcrel_offset */
252b5132 1083
7619e7c7
AM
1084 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1085 HOWTO (R_PPC_GOT_TLSLD16_HI,
1086 16, /* rightshift */
1087 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 16, /* bitsize */
b34976b6 1089 FALSE, /* pc_relative */
252b5132
RH
1090 0, /* bitpos */
1091 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1092 ppc_elf_unhandled_reloc, /* special_function */
1093 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1094 FALSE, /* partial_inplace */
252b5132 1095 0, /* src_mask */
7619e7c7 1096 0xffff, /* dst_mask */
b34976b6 1097 FALSE), /* pcrel_offset */
252b5132 1098
7619e7c7
AM
1099 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1100 HOWTO (R_PPC_GOT_TLSLD16_HA,
1101 16, /* rightshift */
1102 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 16, /* bitsize */
1104 FALSE, /* pc_relative */
1105 0, /* bitpos */
1106 complain_overflow_dont, /* complain_on_overflow */
1107 ppc_elf_unhandled_reloc, /* special_function */
1108 "R_PPC_GOT_TLSLD16_HA", /* name */
1109 FALSE, /* partial_inplace */
1110 0, /* src_mask */
1111 0xffff, /* dst_mask */
1112 FALSE), /* pcrel_offset */
1113
1114 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1115 the offset to the entry. */
1116 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH
1117 0, /* rightshift */
1118 1, /* size (0 = byte, 1 = short, 2 = long) */
1119 16, /* bitsize */
b34976b6 1120 FALSE, /* pc_relative */
252b5132
RH
1121 0, /* bitpos */
1122 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1123 ppc_elf_unhandled_reloc, /* special_function */
1124 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1125 FALSE, /* partial_inplace */
252b5132
RH
1126 0, /* src_mask */
1127 0xffff, /* dst_mask */
b34976b6 1128 FALSE), /* pcrel_offset */
252b5132 1129
7619e7c7
AM
1130 /* Like GOT_DTPREL16, but no overflow. */
1131 HOWTO (R_PPC_GOT_DTPREL16_LO,
1132 0, /* rightshift */
1133 1, /* size (0 = byte, 1 = short, 2 = long) */
1134 16, /* bitsize */
1135 FALSE, /* pc_relative */
1136 0, /* bitpos */
1137 complain_overflow_dont, /* complain_on_overflow */
1138 ppc_elf_unhandled_reloc, /* special_function */
1139 "R_PPC_GOT_DTPREL16_LO", /* name */
1140 FALSE, /* partial_inplace */
1141 0, /* src_mask */
1142 0xffff, /* dst_mask */
1143 FALSE), /* pcrel_offset */
252b5132 1144
7619e7c7
AM
1145 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1146 HOWTO (R_PPC_GOT_DTPREL16_HI,
1147 16, /* rightshift */
1148 1, /* size (0 = byte, 1 = short, 2 = long) */
1149 16, /* bitsize */
1150 FALSE, /* pc_relative */
1151 0, /* bitpos */
1152 complain_overflow_dont, /* complain_on_overflow */
1153 ppc_elf_unhandled_reloc, /* special_function */
1154 "R_PPC_GOT_DTPREL16_HI", /* name */
1155 FALSE, /* partial_inplace */
1156 0, /* src_mask */
1157 0xffff, /* dst_mask */
1158 FALSE), /* pcrel_offset */
252b5132 1159
7619e7c7
AM
1160 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1161 HOWTO (R_PPC_GOT_DTPREL16_HA,
1162 16, /* rightshift */
1163 1, /* size (0 = byte, 1 = short, 2 = long) */
1164 16, /* bitsize */
1165 FALSE, /* pc_relative */
1166 0, /* bitpos */
1167 complain_overflow_dont, /* complain_on_overflow */
1168 ppc_elf_unhandled_reloc, /* special_function */
1169 "R_PPC_GOT_DTPREL16_HA", /* name */
1170 FALSE, /* partial_inplace */
1171 0, /* src_mask */
1172 0xffff, /* dst_mask */
1173 FALSE), /* pcrel_offset */
c3668558 1174
7619e7c7
AM
1175 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1176 offset to the entry. */
1177 HOWTO (R_PPC_GOT_TPREL16,
1178 0, /* rightshift */
1179 1, /* size (0 = byte, 1 = short, 2 = long) */
1180 16, /* bitsize */
1181 FALSE, /* pc_relative */
1182 0, /* bitpos */
1183 complain_overflow_signed, /* complain_on_overflow */
1184 ppc_elf_unhandled_reloc, /* special_function */
1185 "R_PPC_GOT_TPREL16", /* name */
1186 FALSE, /* partial_inplace */
1187 0, /* src_mask */
1188 0xffff, /* dst_mask */
1189 FALSE), /* pcrel_offset */
1190
1191 /* Like GOT_TPREL16, but no overflow. */
1192 HOWTO (R_PPC_GOT_TPREL16_LO,
1193 0, /* rightshift */
1194 1, /* size (0 = byte, 1 = short, 2 = long) */
1195 16, /* bitsize */
1196 FALSE, /* pc_relative */
1197 0, /* bitpos */
1198 complain_overflow_dont, /* complain_on_overflow */
1199 ppc_elf_unhandled_reloc, /* special_function */
1200 "R_PPC_GOT_TPREL16_LO", /* name */
1201 FALSE, /* partial_inplace */
1202 0, /* src_mask */
1203 0xffff, /* dst_mask */
1204 FALSE), /* pcrel_offset */
1205
1206 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1207 HOWTO (R_PPC_GOT_TPREL16_HI,
1208 16, /* rightshift */
1209 1, /* size (0 = byte, 1 = short, 2 = long) */
1210 16, /* bitsize */
1211 FALSE, /* pc_relative */
1212 0, /* bitpos */
1213 complain_overflow_dont, /* complain_on_overflow */
1214 ppc_elf_unhandled_reloc, /* special_function */
1215 "R_PPC_GOT_TPREL16_HI", /* name */
1216 FALSE, /* partial_inplace */
1217 0, /* src_mask */
1218 0xffff, /* dst_mask */
1219 FALSE), /* pcrel_offset */
1220
1221 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1222 HOWTO (R_PPC_GOT_TPREL16_HA,
1223 16, /* rightshift */
1224 1, /* size (0 = byte, 1 = short, 2 = long) */
1225 16, /* bitsize */
1226 FALSE, /* pc_relative */
1227 0, /* bitpos */
1228 complain_overflow_dont, /* complain_on_overflow */
1229 ppc_elf_unhandled_reloc, /* special_function */
1230 "R_PPC_GOT_TPREL16_HA", /* name */
1231 FALSE, /* partial_inplace */
1232 0, /* src_mask */
1233 0xffff, /* dst_mask */
1234 FALSE), /* pcrel_offset */
1235
1236 /* The remaining relocs are from the Embedded ELF ABI, and are not
1237 in the SVR4 ELF ABI. */
1238
1239 /* 32 bit value resulting from the addend minus the symbol. */
1240 HOWTO (R_PPC_EMB_NADDR32, /* type */
1241 0, /* rightshift */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1243 32, /* bitsize */
1244 FALSE, /* pc_relative */
1245 0, /* bitpos */
86c95733 1246 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1247 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1248 "R_PPC_EMB_NADDR32", /* name */
1249 FALSE, /* partial_inplace */
1250 0, /* src_mask */
1251 0xffffffff, /* dst_mask */
1252 FALSE), /* pcrel_offset */
1253
1254 /* 16 bit value resulting from the addend minus the symbol. */
1255 HOWTO (R_PPC_EMB_NADDR16, /* type */
1256 0, /* rightshift */
1257 1, /* size (0 = byte, 1 = short, 2 = long) */
1258 16, /* bitsize */
1259 FALSE, /* pc_relative */
1260 0, /* bitpos */
86c95733 1261 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1262 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1263 "R_PPC_EMB_NADDR16", /* name */
1264 FALSE, /* partial_inplace */
1265 0, /* src_mask */
1266 0xffff, /* dst_mask */
1267 FALSE), /* pcrel_offset */
1268
1269 /* 16 bit value resulting from the addend minus the symbol. */
1270 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1271 0, /* rightshift */
1272 1, /* size (0 = byte, 1 = short, 2 = long) */
1273 16, /* bitsize */
1274 FALSE, /* pc_relative */
1275 0, /* bitpos */
1276 complain_overflow_dont,/* complain_on_overflow */
3ce51288 1277 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1278 "R_PPC_EMB_ADDR16_LO", /* name */
1279 FALSE, /* partial_inplace */
1280 0, /* src_mask */
1281 0xffff, /* dst_mask */
1282 FALSE), /* pcrel_offset */
1283
1284 /* The high order 16 bits of the addend minus the symbol. */
1285 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1286 16, /* rightshift */
1287 1, /* size (0 = byte, 1 = short, 2 = long) */
1288 16, /* bitsize */
1289 FALSE, /* pc_relative */
1290 0, /* bitpos */
1291 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1292 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1293 "R_PPC_EMB_NADDR16_HI", /* name */
1294 FALSE, /* partial_inplace */
1295 0, /* src_mask */
1296 0xffff, /* dst_mask */
1297 FALSE), /* pcrel_offset */
1298
1299 /* The high order 16 bits of the result of the addend minus the address,
1300 plus 1 if the contents of the low 16 bits, treated as a signed number,
1301 is negative. */
1302 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1303 16, /* rightshift */
1304 1, /* size (0 = byte, 1 = short, 2 = long) */
1305 16, /* bitsize */
1306 FALSE, /* pc_relative */
1307 0, /* bitpos */
1308 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1309 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1310 "R_PPC_EMB_NADDR16_HA", /* name */
1311 FALSE, /* partial_inplace */
1312 0, /* src_mask */
1313 0xffff, /* dst_mask */
1314 FALSE), /* pcrel_offset */
1315
1316 /* 16 bit value resulting from allocating a 4 byte word to hold an
1317 address in the .sdata section, and returning the offset from
1318 _SDA_BASE_ for that relocation. */
1319 HOWTO (R_PPC_EMB_SDAI16, /* type */
1320 0, /* rightshift */
1321 1, /* size (0 = byte, 1 = short, 2 = long) */
1322 16, /* bitsize */
1323 FALSE, /* pc_relative */
1324 0, /* bitpos */
bd6c6e2b 1325 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1326 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1327 "R_PPC_EMB_SDAI16", /* name */
1328 FALSE, /* partial_inplace */
1329 0, /* src_mask */
1330 0xffff, /* dst_mask */
1331 FALSE), /* pcrel_offset */
1332
1333 /* 16 bit value resulting from allocating a 4 byte word to hold an
1334 address in the .sdata2 section, and returning the offset from
1335 _SDA2_BASE_ for that relocation. */
1336 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1337 0, /* rightshift */
1338 1, /* size (0 = byte, 1 = short, 2 = long) */
1339 16, /* bitsize */
1340 FALSE, /* pc_relative */
1341 0, /* bitpos */
bd6c6e2b 1342 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1343 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1344 "R_PPC_EMB_SDA2I16", /* name */
1345 FALSE, /* partial_inplace */
1346 0, /* src_mask */
1347 0xffff, /* dst_mask */
1348 FALSE), /* pcrel_offset */
1349
1350 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1351 small data items. */
1352 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1353 0, /* rightshift */
1354 1, /* size (0 = byte, 1 = short, 2 = long) */
1355 16, /* bitsize */
1356 FALSE, /* pc_relative */
1357 0, /* bitpos */
1358 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1359 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1360 "R_PPC_EMB_SDA2REL", /* name */
1361 FALSE, /* partial_inplace */
1362 0, /* src_mask */
1363 0xffff, /* dst_mask */
1364 FALSE), /* pcrel_offset */
1365
1366 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1367 signed offset from the appropriate base, and filling in the register
1368 field with the appropriate register (0, 2, or 13). */
1369 HOWTO (R_PPC_EMB_SDA21, /* type */
1370 0, /* rightshift */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1372 16, /* bitsize */
1373 FALSE, /* pc_relative */
1374 0, /* bitpos */
1375 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1376 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1377 "R_PPC_EMB_SDA21", /* name */
1378 FALSE, /* partial_inplace */
1379 0, /* src_mask */
1380 0xffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1382
1383 /* Relocation not handled: R_PPC_EMB_MRKREF */
1384 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1385 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1386 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1387 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1388 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1389
1390 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1391 in the 16 bit signed offset from the appropriate base, and filling in the
1392 register field with the appropriate register (0, 2, or 13). */
1393 HOWTO (R_PPC_EMB_RELSDA, /* type */
1394 0, /* rightshift */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1396 16, /* bitsize */
ddfd6795 1397 FALSE, /* pc_relative */
25dbc73a
AM
1398 0, /* bitpos */
1399 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1400 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1401 "R_PPC_EMB_RELSDA", /* name */
1402 FALSE, /* partial_inplace */
1403 0, /* src_mask */
1404 0xffff, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1406
b9c361e0
JL
1407 /* A relative 8 bit branch. */
1408 HOWTO (R_PPC_VLE_REL8, /* type */
1409 1, /* rightshift */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1411 8, /* bitsize */
1412 TRUE, /* pc_relative */
1413 0, /* bitpos */
1414 complain_overflow_signed, /* complain_on_overflow */
1415 bfd_elf_generic_reloc, /* special_function */
1416 "R_PPC_VLE_REL8", /* name */
1417 FALSE, /* partial_inplace */
1418 0, /* src_mask */
1419 0xff, /* dst_mask */
1420 TRUE), /* pcrel_offset */
68ffbac6 1421
b9c361e0
JL
1422 /* A relative 15 bit branch. */
1423 HOWTO (R_PPC_VLE_REL15, /* type */
1424 1, /* rightshift */
1425 2, /* size (0 = byte, 1 = short, 2 = long) */
1426 15, /* bitsize */
1427 TRUE, /* pc_relative */
1428 1, /* bitpos */
1429 complain_overflow_signed, /* complain_on_overflow */
1430 bfd_elf_generic_reloc, /* special_function */
1431 "R_PPC_VLE_REL15", /* name */
1432 FALSE, /* partial_inplace */
1433 0, /* src_mask */
dfdaec14 1434 0xfffe, /* dst_mask */
b9c361e0
JL
1435 TRUE), /* pcrel_offset */
1436
68ffbac6 1437 /* A relative 24 bit branch. */
b9c361e0
JL
1438 HOWTO (R_PPC_VLE_REL24, /* type */
1439 1, /* rightshift */
1440 2, /* size (0 = byte, 1 = short, 2 = long) */
1441 24, /* bitsize */
1442 TRUE, /* pc_relative */
1443 1, /* bitpos */
1444 complain_overflow_signed, /* complain_on_overflow */
1445 bfd_elf_generic_reloc, /* special_function */
1446 "R_PPC_VLE_REL24", /* name */
1447 FALSE, /* partial_inplace */
1448 0, /* src_mask */
1449 0x1fffffe, /* dst_mask */
1450 TRUE), /* pcrel_offset */
1451
1452 /* The 16 LSBS in split16a format. */
1453 HOWTO (R_PPC_VLE_LO16A, /* type */
1454 0, /* rightshift */
1455 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1456 16, /* bitsize */
bdaacd3a 1457 FALSE, /* pc_relative */
b9c361e0 1458 0, /* bitpos */
86c95733 1459 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1460 ppc_elf_unhandled_reloc, /* special_function */
b9c361e0
JL
1461 "R_PPC_VLE_LO16A", /* name */
1462 FALSE, /* partial_inplace */
1463 0, /* src_mask */
08dc996f 1464 0x1f07ff, /* dst_mask */
b9c361e0
JL
1465 FALSE), /* pcrel_offset */
1466
1467 /* The 16 LSBS in split16d format. */
1468 HOWTO (R_PPC_VLE_LO16D, /* type */
1469 0, /* rightshift */
1470 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1471 16, /* bitsize */
b9c361e0
JL
1472 FALSE, /* pc_relative */
1473 0, /* bitpos */
86c95733 1474 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1475 ppc_elf_unhandled_reloc, /* special_function */
1476 "R_PPC_VLE_LO16D", /* name */
b9c361e0
JL
1477 FALSE, /* partial_inplace */
1478 0, /* src_mask */
5499c7c7 1479 0x3e007ff, /* dst_mask */
b9c361e0
JL
1480 FALSE), /* pcrel_offset */
1481
1482 /* Bits 16-31 split16a format. */
1483 HOWTO (R_PPC_VLE_HI16A, /* type */
86c95733 1484 16, /* rightshift */
b9c361e0 1485 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1486 16, /* bitsize */
b9c361e0
JL
1487 FALSE, /* pc_relative */
1488 0, /* bitpos */
86c95733 1489 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1490 ppc_elf_unhandled_reloc, /* special_function */
1491 "R_PPC_VLE_HI16A", /* name */
b9c361e0
JL
1492 FALSE, /* partial_inplace */
1493 0, /* src_mask */
08dc996f 1494 0x1f07ff, /* dst_mask */
b9c361e0
JL
1495 FALSE), /* pcrel_offset */
1496
1497 /* Bits 16-31 split16d format. */
1498 HOWTO (R_PPC_VLE_HI16D, /* type */
86c95733 1499 16, /* rightshift */
b9c361e0 1500 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1501 16, /* bitsize */
b9c361e0
JL
1502 FALSE, /* pc_relative */
1503 0, /* bitpos */
86c95733 1504 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1505 ppc_elf_unhandled_reloc, /* special_function */
1506 "R_PPC_VLE_HI16D", /* name */
b9c361e0
JL
1507 FALSE, /* partial_inplace */
1508 0, /* src_mask */
5499c7c7 1509 0x3e007ff, /* dst_mask */
b9c361e0
JL
1510 FALSE), /* pcrel_offset */
1511
1512 /* Bits 16-31 (High Adjusted) in split16a format. */
1513 HOWTO (R_PPC_VLE_HA16A, /* type */
86c95733 1514 16, /* rightshift */
b9c361e0 1515 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1516 16, /* bitsize */
b9c361e0
JL
1517 FALSE, /* pc_relative */
1518 0, /* bitpos */
86c95733 1519 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1520 ppc_elf_unhandled_reloc, /* special_function */
1521 "R_PPC_VLE_HA16A", /* name */
b9c361e0
JL
1522 FALSE, /* partial_inplace */
1523 0, /* src_mask */
08dc996f 1524 0x1f07ff, /* dst_mask */
b9c361e0
JL
1525 FALSE), /* pcrel_offset */
1526
1527 /* Bits 16-31 (High Adjusted) in split16d format. */
1528 HOWTO (R_PPC_VLE_HA16D, /* type */
86c95733 1529 16, /* rightshift */
b9c361e0 1530 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1531 16, /* bitsize */
b9c361e0
JL
1532 FALSE, /* pc_relative */
1533 0, /* bitpos */
86c95733 1534 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1535 ppc_elf_unhandled_reloc, /* special_function */
1536 "R_PPC_VLE_HA16D", /* name */
b9c361e0
JL
1537 FALSE, /* partial_inplace */
1538 0, /* src_mask */
5499c7c7 1539 0x3e007ff, /* dst_mask */
b9c361e0
JL
1540 FALSE), /* pcrel_offset */
1541
86c95733
AM
1542 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1543 instructions. If the register base is 0 then the linker changes
1544 the e_add16i to an e_li instruction. */
1545 HOWTO (R_PPC_VLE_SDA21, /* type */
b9c361e0
JL
1546 0, /* rightshift */
1547 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1548 16, /* bitsize */
b9c361e0
JL
1549 FALSE, /* pc_relative */
1550 0, /* bitpos */
86c95733 1551 complain_overflow_signed, /* complain_on_overflow */
3ce51288
AM
1552 ppc_elf_unhandled_reloc, /* special_function */
1553 "R_PPC_VLE_SDA21", /* name */
b9c361e0
JL
1554 FALSE, /* partial_inplace */
1555 0, /* src_mask */
1556 0xffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1558
86c95733 1559 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
b9c361e0
JL
1560 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1561 0, /* rightshift */
1562 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1563 16, /* bitsize */
b9c361e0
JL
1564 FALSE, /* pc_relative */
1565 0, /* bitpos */
86c95733 1566 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1567 ppc_elf_unhandled_reloc, /* special_function */
b9c361e0
JL
1568 "R_PPC_VLE_SDA21_LO", /* name */
1569 FALSE, /* partial_inplace */
1570 0, /* src_mask */
86c95733 1571 0xffff, /* dst_mask */
b9c361e0
JL
1572 FALSE), /* pcrel_offset */
1573
1574 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1575 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1576 0, /* rightshift */
1577 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1578 16, /* bitsize */
b9c361e0
JL
1579 FALSE, /* pc_relative */
1580 0, /* bitpos */
3ce51288
AM
1581 complain_overflow_dont, /* complain_on_overflow */
1582 ppc_elf_unhandled_reloc, /* special_function */
1583 "R_PPC_VLE_SDAREL_LO16A", /* name */
b9c361e0
JL
1584 FALSE, /* partial_inplace */
1585 0, /* src_mask */
08dc996f 1586 0x1f07ff, /* dst_mask */
b9c361e0
JL
1587 FALSE), /* pcrel_offset */
1588
1589 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
b9c361e0
JL
1590 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1591 0, /* rightshift */
1592 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1593 16, /* bitsize */
b9c361e0
JL
1594 FALSE, /* pc_relative */
1595 0, /* bitpos */
3ce51288
AM
1596 complain_overflow_dont, /* complain_on_overflow */
1597 ppc_elf_unhandled_reloc, /* special_function */
1598 "R_PPC_VLE_SDAREL_LO16D", /* name */
b9c361e0
JL
1599 FALSE, /* partial_inplace */
1600 0, /* src_mask */
5499c7c7 1601 0x3e007ff, /* dst_mask */
b9c361e0
JL
1602 FALSE), /* pcrel_offset */
1603
1604 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
3ce51288 1605 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
86c95733 1606 16, /* rightshift */
b9c361e0 1607 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1608 16, /* bitsize */
b9c361e0
JL
1609 FALSE, /* pc_relative */
1610 0, /* bitpos */
3ce51288
AM
1611 complain_overflow_dont, /* complain_on_overflow */
1612 ppc_elf_unhandled_reloc, /* special_function */
1613 "R_PPC_VLE_SDAREL_HI16A", /* name */
b9c361e0
JL
1614 FALSE, /* partial_inplace */
1615 0, /* src_mask */
08dc996f 1616 0x1f07ff, /* dst_mask */
b9c361e0
JL
1617 FALSE), /* pcrel_offset */
1618
1619 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
3ce51288 1620 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
86c95733 1621 16, /* rightshift */
b9c361e0 1622 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1623 16, /* bitsize */
b9c361e0
JL
1624 FALSE, /* pc_relative */
1625 0, /* bitpos */
3ce51288
AM
1626 complain_overflow_dont, /* complain_on_overflow */
1627 ppc_elf_unhandled_reloc, /* special_function */
1628 "R_PPC_VLE_SDAREL_HI16D", /* name */
b9c361e0
JL
1629 FALSE, /* partial_inplace */
1630 0, /* src_mask */
5499c7c7 1631 0x3e007ff, /* dst_mask */
b9c361e0
JL
1632 FALSE), /* pcrel_offset */
1633
1634 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
3ce51288 1635 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
86c95733 1636 16, /* rightshift */
b9c361e0 1637 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1638 16, /* bitsize */
b9c361e0
JL
1639 FALSE, /* pc_relative */
1640 0, /* bitpos */
3ce51288
AM
1641 complain_overflow_dont, /* complain_on_overflow */
1642 ppc_elf_unhandled_reloc, /* special_function */
1643 "R_PPC_VLE_SDAREL_HA16A", /* name */
b9c361e0
JL
1644 FALSE, /* partial_inplace */
1645 0, /* src_mask */
08dc996f 1646 0x1f07ff, /* dst_mask */
b9c361e0
JL
1647 FALSE), /* pcrel_offset */
1648
1649 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
3ce51288 1650 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
86c95733 1651 16, /* rightshift */
b9c361e0 1652 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1653 16, /* bitsize */
b9c361e0
JL
1654 FALSE, /* pc_relative */
1655 0, /* bitpos */
3ce51288
AM
1656 complain_overflow_dont, /* complain_on_overflow */
1657 ppc_elf_unhandled_reloc, /* special_function */
1658 "R_PPC_VLE_SDAREL_HA16D", /* name */
b9c361e0
JL
1659 FALSE, /* partial_inplace */
1660 0, /* src_mask */
5499c7c7 1661 0x3e007ff, /* dst_mask */
b9c361e0
JL
1662 FALSE), /* pcrel_offset */
1663
83eef883
AFB
1664 /* e_li split20 format. */
1665 HOWTO (R_PPC_VLE_ADDR20, /* type */
1666 16, /* rightshift */
1667 2, /* size (0 = byte, 1 = short, 2 = long) */
1668 20, /* bitsize */
1669 FALSE, /* pc_relative */
1670 0, /* bitpos */
1671 complain_overflow_dont, /* complain_on_overflow */
1672 bfd_elf_generic_reloc, /* special_function */
1673 "R_PPC_VLE_ADDR20", /* name */
1674 FALSE, /* partial_inplace */
1675 0, /* src_mask */
1676 0x1f07ff, /* dst_mask */
1677 FALSE), /* pcrel_offset */
1678
e054468f
AM
1679 HOWTO (R_PPC_IRELATIVE, /* type */
1680 0, /* rightshift */
1681 2, /* size (0 = byte, 1 = short, 2 = long) */
1682 32, /* bitsize */
1683 FALSE, /* pc_relative */
1684 0, /* bitpos */
86c95733 1685 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1686 ppc_elf_unhandled_reloc, /* special_function */
e054468f
AM
1687 "R_PPC_IRELATIVE", /* name */
1688 FALSE, /* partial_inplace */
1689 0, /* src_mask */
1690 0xffffffff, /* dst_mask */
1691 FALSE), /* pcrel_offset */
1692
d7128ce4
AM
1693 /* A 16 bit relative relocation. */
1694 HOWTO (R_PPC_REL16, /* type */
1695 0, /* rightshift */
1696 1, /* size (0 = byte, 1 = short, 2 = long) */
1697 16, /* bitsize */
1698 TRUE, /* pc_relative */
1699 0, /* bitpos */
86c95733 1700 complain_overflow_signed, /* complain_on_overflow */
d7128ce4
AM
1701 bfd_elf_generic_reloc, /* special_function */
1702 "R_PPC_REL16", /* name */
1703 FALSE, /* partial_inplace */
1704 0, /* src_mask */
1705 0xffff, /* dst_mask */
1706 TRUE), /* pcrel_offset */
1707
1708 /* A 16 bit relative relocation without overflow. */
1709 HOWTO (R_PPC_REL16_LO, /* type */
1710 0, /* rightshift */
1711 1, /* size (0 = byte, 1 = short, 2 = long) */
1712 16, /* bitsize */
1713 TRUE, /* pc_relative */
1714 0, /* bitpos */
1715 complain_overflow_dont,/* complain_on_overflow */
1716 bfd_elf_generic_reloc, /* special_function */
1717 "R_PPC_REL16_LO", /* name */
1718 FALSE, /* partial_inplace */
1719 0, /* src_mask */
1720 0xffff, /* dst_mask */
1721 TRUE), /* pcrel_offset */
1722
1723 /* The high order 16 bits of a relative address. */
1724 HOWTO (R_PPC_REL16_HI, /* type */
1725 16, /* rightshift */
1726 1, /* size (0 = byte, 1 = short, 2 = long) */
1727 16, /* bitsize */
1728 TRUE, /* pc_relative */
1729 0, /* bitpos */
1730 complain_overflow_dont, /* complain_on_overflow */
1731 bfd_elf_generic_reloc, /* special_function */
1732 "R_PPC_REL16_HI", /* name */
1733 FALSE, /* partial_inplace */
1734 0, /* src_mask */
1735 0xffff, /* dst_mask */
1736 TRUE), /* pcrel_offset */
1737
1738 /* The high order 16 bits of a relative address, plus 1 if the contents of
1739 the low 16 bits, treated as a signed number, is negative. */
1740 HOWTO (R_PPC_REL16_HA, /* type */
1741 16, /* rightshift */
1742 1, /* size (0 = byte, 1 = short, 2 = long) */
1743 16, /* bitsize */
1744 TRUE, /* pc_relative */
1745 0, /* bitpos */
1746 complain_overflow_dont, /* complain_on_overflow */
1747 ppc_elf_addr16_ha_reloc, /* special_function */
1748 "R_PPC_REL16_HA", /* name */
1749 FALSE, /* partial_inplace */
1750 0, /* src_mask */
1751 0xffff, /* dst_mask */
1752 TRUE), /* pcrel_offset */
1753
a680de9a
PB
1754 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1755 HOWTO (R_PPC_REL16DX_HA, /* type */
1756 16, /* rightshift */
1757 2, /* size (0 = byte, 1 = short, 2 = long) */
1758 16, /* bitsize */
1759 TRUE, /* pc_relative */
1760 0, /* bitpos */
1761 complain_overflow_signed, /* complain_on_overflow */
1762 ppc_elf_addr16_ha_reloc, /* special_function */
1763 "R_PPC_REL16DX_HA", /* name */
1764 FALSE, /* partial_inplace */
1765 0, /* src_mask */
1766 0x1fffc1, /* dst_mask */
1767 TRUE), /* pcrel_offset */
1768
7ba71655
AM
1769 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1770 HOWTO (R_PPC_16DX_HA, /* type */
1771 16, /* rightshift */
1772 2, /* size (0 = byte, 1 = short, 2 = long) */
1773 16, /* bitsize */
1774 FALSE, /* pc_relative */
1775 0, /* bitpos */
1776 complain_overflow_signed, /* complain_on_overflow */
1777 ppc_elf_addr16_ha_reloc, /* special_function */
1778 "R_PPC_16DX_HA", /* name */
1779 FALSE, /* partial_inplace */
1780 0, /* src_mask */
1781 0x1fffc1, /* dst_mask */
1782 FALSE), /* pcrel_offset */
1783
25dbc73a
AM
1784 /* GNU extension to record C++ vtable hierarchy. */
1785 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1786 0, /* rightshift */
1787 0, /* size (0 = byte, 1 = short, 2 = long) */
1788 0, /* bitsize */
1789 FALSE, /* pc_relative */
1790 0, /* bitpos */
1791 complain_overflow_dont, /* complain_on_overflow */
1792 NULL, /* special_function */
1793 "R_PPC_GNU_VTINHERIT", /* name */
1794 FALSE, /* partial_inplace */
1795 0, /* src_mask */
1796 0, /* dst_mask */
1797 FALSE), /* pcrel_offset */
1798
1799 /* GNU extension to record C++ vtable member usage. */
1800 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1801 0, /* rightshift */
1802 0, /* size (0 = byte, 1 = short, 2 = long) */
1803 0, /* bitsize */
1804 FALSE, /* pc_relative */
1805 0, /* bitpos */
1806 complain_overflow_dont, /* complain_on_overflow */
1807 NULL, /* special_function */
1808 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM
1809 FALSE, /* partial_inplace */
1810 0, /* src_mask */
25dbc73a 1811 0, /* dst_mask */
7619e7c7
AM
1812 FALSE), /* pcrel_offset */
1813
25dbc73a
AM
1814 /* Phony reloc to handle AIX style TOC entries. */
1815 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM
1816 0, /* rightshift */
1817 1, /* size (0 = byte, 1 = short, 2 = long) */
1818 16, /* bitsize */
1819 FALSE, /* pc_relative */
1820 0, /* bitpos */
25dbc73a 1821 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1822 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a 1823 "R_PPC_TOC16", /* name */
7619e7c7
AM
1824 FALSE, /* partial_inplace */
1825 0, /* src_mask */
1826 0xffff, /* dst_mask */
1827 FALSE), /* pcrel_offset */
25dbc73a
AM
1828};
1829\f
1830/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1831
1832static void
1833ppc_elf_howto_init (void)
1834{
1835 unsigned int i, type;
1836
1837 for (i = 0;
1838 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1839 i++)
1840 {
1841 type = ppc_elf_howto_raw[i].type;
1842 if (type >= (sizeof (ppc_elf_howto_table)
1843 / sizeof (ppc_elf_howto_table[0])))
1844 abort ();
1845 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1846 }
1847}
1848
1849static reloc_howto_type *
1850ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1851 bfd_reloc_code_real_type code)
1852{
1853 enum elf_ppc_reloc_type r;
1854
1855 /* Initialize howto table if not already done. */
1856 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1857 ppc_elf_howto_init ();
1858
1859 switch (code)
1860 {
1861 default:
1862 return NULL;
1863
1864 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1865 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1866 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1fe532cf 1867 case BFD_RELOC_PPC64_ADDR16_DS:
25dbc73a 1868 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1fe532cf 1869 case BFD_RELOC_PPC64_ADDR16_LO_DS:
25dbc73a
AM
1870 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1871 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1872 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1873 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1874 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1875 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1876 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1877 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1878 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1879 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1fe532cf 1880 case BFD_RELOC_PPC64_GOT16_DS:
25dbc73a 1881 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1fe532cf 1882 case BFD_RELOC_PPC64_GOT16_LO_DS:
25dbc73a
AM
1883 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1884 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1885 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1886 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1887 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1888 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1889 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1890 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1891 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1892 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1fe532cf 1893 case BFD_RELOC_PPC64_PLT16_LO_DS:
25dbc73a
AM
1894 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1895 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1896 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1897 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1fe532cf 1898 case BFD_RELOC_PPC64_SECTOFF_DS:
25dbc73a 1899 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1fe532cf 1900 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
25dbc73a
AM
1901 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1902 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1903 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1904 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1fe532cf 1905 case BFD_RELOC_PPC64_TOC16_DS:
25dbc73a
AM
1906 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1907 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
727fc41e
AM
1908 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1909 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
25dbc73a 1910 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1fe532cf 1911 case BFD_RELOC_PPC64_TPREL16_DS:
25dbc73a 1912 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1fe532cf 1913 case BFD_RELOC_PPC64_TPREL16_LO_DS:
25dbc73a
AM
1914 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1915 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1916 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1917 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1fe532cf 1918 case BFD_RELOC_PPC64_DTPREL16_DS:
25dbc73a 1919 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1fe532cf 1920 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
25dbc73a
AM
1921 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1922 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1923 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1924 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1925 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1926 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1929 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1930 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1933 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1934 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1937 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1938 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1941 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1942 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1943 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1946 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1947 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1948 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1949 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1950 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1951 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1952 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1953 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1954 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1955 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1956 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
b9c361e0
JL
1957 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1958 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1959 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1960 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1961 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1962 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1963 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1964 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1965 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1966 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1967 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1968 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1969 r = R_PPC_VLE_SDAREL_LO16A;
1970 break;
1971 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1972 r = R_PPC_VLE_SDAREL_LO16D;
1973 break;
1974 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1975 r = R_PPC_VLE_SDAREL_HI16A;
1976 break;
1977 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1978 r = R_PPC_VLE_SDAREL_HI16D;
1979 break;
1980 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1981 r = R_PPC_VLE_SDAREL_HA16A;
1982 break;
1983 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1984 r = R_PPC_VLE_SDAREL_HA16D;
1985 break;
d7128ce4
AM
1986 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1987 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1988 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1989 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
7ba71655 1990 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
a680de9a 1991 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
25dbc73a
AM
1992 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1993 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1994 }
1995
1996 return ppc_elf_howto_table[r];
1997};
1998
157090f7
AM
1999static reloc_howto_type *
2000ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2001 const char *r_name)
2002{
2003 unsigned int i;
2004
2005 for (i = 0;
2006 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2007 i++)
2008 if (ppc_elf_howto_raw[i].name != NULL
2009 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2010 return &ppc_elf_howto_raw[i];
2011
2012 return NULL;
2013}
2014
25dbc73a
AM
2015/* Set the howto pointer for a PowerPC ELF reloc. */
2016
f3185997 2017static bfd_boolean
4aef7643 2018ppc_elf_info_to_howto (bfd *abfd,
25dbc73a
AM
2019 arelent *cache_ptr,
2020 Elf_Internal_Rela *dst)
2021{
cd21f5da
NC
2022 unsigned int r_type;
2023
25dbc73a
AM
2024 /* Initialize howto table if not already done. */
2025 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2026 ppc_elf_howto_init ();
2027
cd21f5da
NC
2028 r_type = ELF32_R_TYPE (dst->r_info);
2029 if (r_type >= R_PPC_max)
2030 {
695344c0 2031 /* xgettext:c-format */
0aa13fee 2032 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
4eca0228 2033 abfd, r_type);
cd21f5da 2034 bfd_set_error (bfd_error_bad_value);
f3185997 2035 return FALSE;
cd21f5da 2036 }
f3185997 2037
cd21f5da 2038 cache_ptr->howto = ppc_elf_howto_table[r_type];
375de94a
AM
2039
2040 /* Just because the above assert didn't trigger doesn't mean that
2041 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
f3185997 2042 if (cache_ptr->howto == NULL)
375de94a 2043 {
695344c0 2044 /* xgettext:c-format */
0aa13fee 2045 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
4eca0228 2046 abfd, r_type);
375de94a
AM
2047 bfd_set_error (bfd_error_bad_value);
2048
f3185997 2049 return FALSE;
375de94a 2050 }
f3185997
NC
2051
2052 return TRUE;
25dbc73a
AM
2053}
2054
d7128ce4 2055/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM
2056
2057static bfd_reloc_status_type
4aef7643 2058ppc_elf_addr16_ha_reloc (bfd *abfd,
25dbc73a
AM
2059 arelent *reloc_entry,
2060 asymbol *symbol,
4aef7643 2061 void *data,
25dbc73a
AM
2062 asection *input_section,
2063 bfd *output_bfd,
2064 char **error_message ATTRIBUTE_UNUSED)
2065{
a680de9a
PB
2066 enum elf_ppc_reloc_type r_type;
2067 long insn;
2068 bfd_size_type octets;
2069 bfd_vma value;
25dbc73a
AM
2070
2071 if (output_bfd != NULL)
2072 {
2073 reloc_entry->address += input_section->output_offset;
2074 return bfd_reloc_ok;
2075 }
2076
a680de9a
PB
2077 reloc_entry->addend += 0x8000;
2078 r_type = reloc_entry->howto->type;
2079 if (r_type != R_PPC_REL16DX_HA)
2080 return bfd_reloc_continue;
2081
2082 value = 0;
2083 if (!bfd_is_com_section (symbol->section))
2084 value = symbol->value;
2085 value += (reloc_entry->addend
2086 + symbol->section->output_offset
2087 + symbol->section->output_section->vma);
2088 value -= (reloc_entry->address
2089 + input_section->output_offset
2090 + input_section->output_section->vma);
2091 value >>= 16;
2092
2093 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2094 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2095 insn &= ~0x1fffc1;
2096 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2097 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2098 return bfd_reloc_ok;
25dbc73a
AM
2099}
2100
2101static bfd_reloc_status_type
2102ppc_elf_unhandled_reloc (bfd *abfd,
2103 arelent *reloc_entry,
2104 asymbol *symbol,
2105 void *data,
2106 asection *input_section,
2107 bfd *output_bfd,
2108 char **error_message)
2109{
2110 /* If this is a relocatable link (output_bfd test tells us), just
2111 call the generic function. Any adjustment will be done at final
2112 link time. */
2113 if (output_bfd != NULL)
2114 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2115 input_section, output_bfd, error_message);
2116
2117 if (error_message != NULL)
2118 {
2119 static char buf[60];
2120 sprintf (buf, _("generic linker can't handle %s"),
2121 reloc_entry->howto->name);
2122 *error_message = buf;
2123 }
2124 return bfd_reloc_dangerous;
2125}
2126\f
2127/* Sections created by the linker. */
2128
2129typedef struct elf_linker_section
2130{
c9a2f333 2131 /* Pointer to the bfd section. */
25dbc73a 2132 asection *section;
c9a2f333
AM
2133 /* Section name. */
2134 const char *name;
2135 /* Associated bss section name. */
2136 const char *bss_name;
2137 /* Associated symbol name. */
2138 const char *sym_name;
046183de
AM
2139 /* Associated symbol. */
2140 struct elf_link_hash_entry *sym;
25dbc73a
AM
2141} elf_linker_section_t;
2142
2143/* Linked list of allocated pointer entries. This hangs off of the
2144 symbol lists, and provides allows us to return different pointers,
2145 based on different addend's. */
2146
2147typedef struct elf_linker_section_pointers
2148{
2149 /* next allocated pointer for this symbol */
2150 struct elf_linker_section_pointers *next;
2151 /* offset of pointer from beginning of section */
2152 bfd_vma offset;
2153 /* addend used */
2154 bfd_vma addend;
2155 /* which linker section this is */
2156 elf_linker_section_t *lsect;
25dbc73a
AM
2157} elf_linker_section_pointers_t;
2158
2159struct ppc_elf_obj_tdata
2160{
2161 struct elf_obj_tdata elf;
2162
2163 /* A mapping from local symbols to offsets into the various linker
2164 sections added. This is index by the symbol index. */
2165 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM
2166
2167 /* Flags used to auto-detect plt type. */
2168 unsigned int makes_plt_call : 1;
2169 unsigned int has_rel16 : 1;
25dbc73a
AM
2170};
2171
2172#define ppc_elf_tdata(bfd) \
2173 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 2174
25dbc73a
AM
2175#define elf_local_ptr_offsets(bfd) \
2176 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 2177
0c8d6e5c
AM
2178#define is_ppc_elf(bfd) \
2179 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2180 && elf_object_id (bfd) == PPC32_ELF_DATA)
0c8d6e5c 2181
25dbc73a 2182/* Override the generic function because we store some extras. */
7619e7c7 2183
25dbc73a
AM
2184static bfd_boolean
2185ppc_elf_mkobject (bfd *abfd)
2186{
0ffa91dd 2187 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
4dfe6ac6 2188 PPC32_ELF_DATA);
25dbc73a 2189}
7619e7c7 2190
14b57c7c
AM
2191/* When defaulting arch/mach, decode apuinfo to find a better match. */
2192
2193bfd_boolean
2194_bfd_elf_ppc_set_arch (bfd *abfd)
2195{
2196 unsigned long mach = 0;
2197 asection *s;
2198 unsigned char *contents;
2199
2200 if (abfd->arch_info->bits_per_word == 32
2201 && bfd_big_endian (abfd))
2202 {
2203
2204 for (s = abfd->sections; s != NULL; s = s->next)
2205 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2206 break;
2207 if (s != NULL)
2208 mach = bfd_mach_ppc_vle;
2209 }
2210
2211 if (mach == 0)
2212 {
2213 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2214 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2215 {
2216 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2217 unsigned int i;
2218
2219 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2220 {
2221 unsigned int val = bfd_get_32 (abfd, contents + i);
2222 switch (val >> 16)
2223 {
2224 case PPC_APUINFO_PMR:
2225 case PPC_APUINFO_RFMCI:
2226 if (mach == 0)
2227 mach = bfd_mach_ppc_titan;
2228 break;
2229
2230 case PPC_APUINFO_ISEL:
2231 case PPC_APUINFO_CACHELCK:
2232 if (mach == bfd_mach_ppc_titan)
2233 mach = bfd_mach_ppc_e500mc;
2234 break;
2235
2236 case PPC_APUINFO_SPE:
2237 case PPC_APUINFO_EFS:
2238 case PPC_APUINFO_BRLOCK:
2239 if (mach != bfd_mach_ppc_vle)
2240 mach = bfd_mach_ppc_e500;
8941017b 2241 break;
14b57c7c
AM
2242
2243 case PPC_APUINFO_VLE:
2244 mach = bfd_mach_ppc_vle;
2245 break;
2246
2247 default:
2248 mach = -1ul;
2249 }
2250 }
2251 free (contents);
2252 }
2253 }
2254
2255 if (mach != 0 && mach != -1ul)
2256 {
2257 const bfd_arch_info_type *arch;
2258
2259 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2260 if (arch->mach == mach)
2261 {
2262 abfd->arch_info = arch;
2263 break;
2264 }
2265 }
2266 return TRUE;
2267}
2268
25dbc73a 2269/* Fix bad default arch selected for a 32 bit input bfd when the
14b57c7c 2270 default is 64 bit. Also select arch based on apuinfo. */
7619e7c7 2271
25dbc73a
AM
2272static bfd_boolean
2273ppc_elf_object_p (bfd *abfd)
2274{
14b57c7c
AM
2275 if (!abfd->arch_info->the_default)
2276 return TRUE;
2277
2278 if (abfd->arch_info->bits_per_word == 64)
25dbc73a
AM
2279 {
2280 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 2281
25dbc73a
AM
2282 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2283 {
2284 /* Relies on arch after 64 bit default being 32 bit default. */
2285 abfd->arch_info = abfd->arch_info->next;
2286 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2287 }
2288 }
14b57c7c 2289 return _bfd_elf_ppc_set_arch (abfd);
25dbc73a 2290}
7619e7c7 2291
25dbc73a 2292/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 2293
25dbc73a
AM
2294static bfd_boolean
2295ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2296{
2297 BFD_ASSERT (!elf_flags_init (abfd)
2298 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 2299
25dbc73a
AM
2300 elf_elfheader (abfd)->e_flags = flags;
2301 elf_flags_init (abfd) = TRUE;
2302 return TRUE;
2303}
2304
25dbc73a 2305/* Support for core dump NOTE sections. */
deaaf2f3 2306
b34976b6 2307static bfd_boolean
25dbc73a 2308ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 2309{
25dbc73a
AM
2310 int offset;
2311 unsigned int size;
252b5132 2312
25dbc73a
AM
2313 switch (note->descsz)
2314 {
2315 default:
2316 return FALSE;
252b5132 2317
25dbc73a
AM
2318 case 268: /* Linux/PPC. */
2319 /* pr_cursig */
228e534f 2320 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 2321
25dbc73a 2322 /* pr_pid */
228e534f 2323 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 2324
25dbc73a
AM
2325 /* pr_reg */
2326 offset = 72;
2327 size = 192;
deaaf2f3 2328
25dbc73a
AM
2329 break;
2330 }
deaaf2f3 2331
25dbc73a
AM
2332 /* Make a ".reg/999" section. */
2333 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2334 size, note->descpos + offset);
2335}
252b5132 2336
25dbc73a
AM
2337static bfd_boolean
2338ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2339{
2340 switch (note->descsz)
deaaf2f3 2341 {
25dbc73a
AM
2342 default:
2343 return FALSE;
deaaf2f3 2344
25dbc73a 2345 case 128: /* Linux/PPC elf_prpsinfo. */
228e534f 2346 elf_tdata (abfd)->core->pid
bc989cdc 2347 = bfd_get_32 (abfd, note->descdata + 16);
228e534f 2348 elf_tdata (abfd)->core->program
25dbc73a 2349 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
228e534f 2350 elf_tdata (abfd)->core->command
25dbc73a
AM
2351 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2352 }
9abc968f 2353
25dbc73a
AM
2354 /* Note that for some reason, a spurious space is tacked
2355 onto the end of the args in some (at least one anyway)
2356 implementations, so strip it off if it exists. */
70bccea4 2357
25dbc73a 2358 {
228e534f 2359 char *command = elf_tdata (abfd)->core->command;
25dbc73a 2360 int n = strlen (command);
70bccea4 2361
25dbc73a
AM
2362 if (0 < n && command[n - 1] == ' ')
2363 command[n - 1] = '\0';
2364 }
deaaf2f3 2365
25dbc73a
AM
2366 return TRUE;
2367}
deaaf2f3 2368
183e98be
AM
2369static char *
2370ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2371{
2372 switch (note_type)
2373 {
2374 default:
2375 return NULL;
2376
2377 case NT_PRPSINFO:
2378 {
2379 char data[128];
2380 va_list ap;
2381
2382 va_start (ap, note_type);
75cd47ed 2383 memset (data, 0, sizeof (data));
183e98be
AM
2384 strncpy (data + 32, va_arg (ap, const char *), 16);
2385 strncpy (data + 48, va_arg (ap, const char *), 80);
2386 va_end (ap);
2387 return elfcore_write_note (abfd, buf, bufsiz,
2388 "CORE", note_type, data, sizeof (data));
2389 }
2390
2391 case NT_PRSTATUS:
2392 {
2393 char data[268];
2394 va_list ap;
2395 long pid;
2396 int cursig;
2397 const void *greg;
2398
2399 va_start (ap, note_type);
2400 memset (data, 0, 72);
2401 pid = va_arg (ap, long);
2402 bfd_put_32 (abfd, pid, data + 24);
2403 cursig = va_arg (ap, int);
2404 bfd_put_16 (abfd, cursig, data + 12);
2405 greg = va_arg (ap, const void *);
2406 memcpy (data + 72, greg, 192);
2407 memset (data + 264, 0, 4);
2408 va_end (ap);
2409 return elfcore_write_note (abfd, buf, bufsiz,
2410 "CORE", note_type, data, sizeof (data));
2411 }
2412 }
2413}
2414
b9c361e0 2415static flagword
68ffbac6 2416ppc_elf_lookup_section_flags (char *flag_name)
b9c361e0
JL
2417{
2418
2419 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2420 return SHF_PPC_VLE;
2421
2422 return 0;
2423}
2424
25dbc73a
AM
2425/* Return address for Ith PLT stub in section PLT, for relocation REL
2426 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 2427
25dbc73a
AM
2428static bfd_vma
2429ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2430 const asection *plt ATTRIBUTE_UNUSED,
2431 const arelent *rel)
2432{
2433 return rel->address;
2434}
deaaf2f3 2435
25dbc73a 2436/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
2437 is called when bfd_section_from_shdr finds a section with an unknown
2438 type. */
deaaf2f3 2439
25dbc73a 2440static bfd_boolean
6dc132d9
L
2441ppc_elf_section_from_shdr (bfd *abfd,
2442 Elf_Internal_Shdr *hdr,
2443 const char *name,
2444 int shindex)
25dbc73a
AM
2445{
2446 asection *newsect;
2447 flagword flags;
d1c6de6f 2448
6dc132d9 2449 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 2450 return FALSE;
deaaf2f3 2451
25dbc73a
AM
2452 newsect = hdr->bfd_section;
2453 flags = bfd_get_section_flags (abfd, newsect);
2454 if (hdr->sh_flags & SHF_EXCLUDE)
2455 flags |= SEC_EXCLUDE;
9abc968f 2456
25dbc73a
AM
2457 if (hdr->sh_type == SHT_ORDERED)
2458 flags |= SEC_SORT_ENTRIES;
d1c6de6f 2459
25dbc73a
AM
2460 bfd_set_section_flags (abfd, newsect, flags);
2461 return TRUE;
2462}
2463
2464/* Set up any other section flags and such that may be necessary. */
2465
2466static bfd_boolean
2467ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2468 Elf_Internal_Shdr *shdr,
2469 asection *asect)
2470{
25dbc73a
AM
2471 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2472 shdr->sh_type = SHT_ORDERED;
2473
2474 return TRUE;
2475}
2476
2477/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2478 need to bump up the number of section headers. */
2479
2480static int
a6b96beb
AM
2481ppc_elf_additional_program_headers (bfd *abfd,
2482 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM
2483{
2484 asection *s;
2485 int ret = 0;
d1c6de6f 2486
25dbc73a
AM
2487 s = bfd_get_section_by_name (abfd, ".sbss2");
2488 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2489 ++ret;
d1c6de6f 2490
25dbc73a
AM
2491 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2492 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2493 ++ret;
deaaf2f3 2494
25dbc73a
AM
2495 return ret;
2496}
deaaf2f3 2497
68ffbac6 2498/* Modify the segment map for VLE executables. */
b9c361e0
JL
2499
2500bfd_boolean
2501ppc_elf_modify_segment_map (bfd *abfd,
2502 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2503{
f7d69005 2504 struct elf_segment_map *m;
b9c361e0
JL
2505
2506 /* At this point in the link, output sections have already been sorted by
2507 LMA and assigned to segments. All that is left to do is to ensure
2508 there is no mixing of VLE & non-VLE sections in a text segment.
2509 If we find that case, we split the segment.
2510 We maintain the original output section order. */
2511
12bd6957 2512 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
b9c361e0 2513 {
f7d69005
AM
2514 struct elf_segment_map *n;
2515 bfd_size_type amt;
2516 unsigned int j, k;
2517 unsigned int p_flags;
2518
2519 if (m->p_type != PT_LOAD || m->count == 0)
b9c361e0
JL
2520 continue;
2521
f7d69005 2522 for (p_flags = PF_R, j = 0; j != m->count; ++j)
b9c361e0 2523 {
f7d69005
AM
2524 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2525 p_flags |= PF_W;
2526 if ((m->sections[j]->flags & SEC_CODE) != 0)
2527 {
2528 p_flags |= PF_X;
2529 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2530 p_flags |= PF_PPC_VLE;
2531 break;
2532 }
2533 }
2534 if (j != m->count)
2535 while (++j != m->count)
2536 {
2537 unsigned int p_flags1 = PF_R;
94caa966 2538
f7d69005
AM
2539 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2540 p_flags1 |= PF_W;
2541 if ((m->sections[j]->flags & SEC_CODE) != 0)
2542 {
2543 p_flags1 |= PF_X;
2544 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2545 p_flags1 |= PF_PPC_VLE;
2546 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2547 break;
2548 }
2549 p_flags |= p_flags1;
2550 }
2551 /* If we're splitting a segment which originally contained rw
2552 sections then those sections might now only be in one of the
2553 two parts. So always set p_flags if splitting, even if we
2554 are being called for objcopy with p_flags_valid set. */
2555 if (j != m->count || !m->p_flags_valid)
2556 {
2557 m->p_flags_valid = 1;
2558 m->p_flags = p_flags;
2559 }
2560 if (j == m->count)
b9c361e0
JL
2561 continue;
2562
f7d69005 2563 /* Sections 0..j-1 stay in this (current) segment,
b9c361e0
JL
2564 the remainder are put in a new segment.
2565 The scan resumes with the new segment. */
2566
b9c361e0
JL
2567 amt = sizeof (struct elf_segment_map);
2568 amt += (m->count - j - 1) * sizeof (asection *);
2569 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2570 if (n == NULL)
954b63d4 2571 return FALSE;
b9c361e0
JL
2572
2573 n->p_type = PT_LOAD;
b9c361e0
JL
2574 n->count = m->count - j;
2575 for (k = 0; k < n->count; ++k)
f7d69005
AM
2576 n->sections[k] = m->sections[j + k];
2577 m->count = j;
2578 m->p_size_valid = 0;
b9c361e0
JL
2579 n->next = m->next;
2580 m->next = n;
b9c361e0
JL
2581 }
2582
2583 return TRUE;
2584}
2585
25dbc73a
AM
2586/* Add extra PPC sections -- Note, for now, make .sbss2 and
2587 .PPC.EMB.sbss0 a normal section, and not a bss section so
2588 that the linker doesn't crater when trying to make more than
2589 2 sections. */
e656e369 2590
b35d266b 2591static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 2592{
14b57c7c
AM
2593 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2594 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2595 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2596 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2597 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2598 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2599 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2600 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2601 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2602 { NULL, 0, 0, 0, 0 }
7f4d3958
L
2603};
2604
551b43fd
AM
2605/* This is what we want for new plt/got. */
2606static struct bfd_elf_special_section ppc_alt_plt =
07d6d2b8 2607 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM
2608
2609static const struct bfd_elf_special_section *
4aef7643 2610ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
7f4d3958 2611{
b35d266b 2612 const struct bfd_elf_special_section *ssect;
551b43fd
AM
2613
2614 /* See if this is one of the special sections. */
2615 if (sec->name == NULL)
2616 return NULL;
2617
2618 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2619 sec->use_rela_p);
2620 if (ssect != NULL)
2621 {
2622 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2623 ssect = &ppc_alt_plt;
2624 return ssect;
2625 }
2626
2627 return _bfd_elf_get_sec_type_attr (abfd, sec);
2628}
25dbc73a
AM
2629\f
2630/* Very simple linked list structure for recording apuinfo values. */
2631typedef struct apuinfo_list
2632{
2633 struct apuinfo_list *next;
2634 unsigned long value;
2635}
2636apuinfo_list;
e656e369 2637
25dbc73a 2638static apuinfo_list *head;
f2faa800 2639static bfd_boolean apuinfo_set;
deaaf2f3 2640
25dbc73a
AM
2641static void
2642apuinfo_list_init (void)
2643{
2644 head = NULL;
f2faa800 2645 apuinfo_set = FALSE;
25dbc73a 2646}
9abc968f 2647
25dbc73a
AM
2648static void
2649apuinfo_list_add (unsigned long value)
2650{
2651 apuinfo_list *entry = head;
deaaf2f3 2652
25dbc73a
AM
2653 while (entry != NULL)
2654 {
2655 if (entry->value == value)
2656 return;
2657 entry = entry->next;
2658 }
b4a38de6 2659
25dbc73a
AM
2660 entry = bfd_malloc (sizeof (* entry));
2661 if (entry == NULL)
2662 return;
e656e369 2663
25dbc73a
AM
2664 entry->value = value;
2665 entry->next = head;
2666 head = entry;
2667}
9abc968f 2668
25dbc73a
AM
2669static unsigned
2670apuinfo_list_length (void)
2671{
2672 apuinfo_list *entry;
2673 unsigned long count;
9abc968f 2674
25dbc73a
AM
2675 for (entry = head, count = 0;
2676 entry;
2677 entry = entry->next)
2678 ++ count;
e656e369 2679
25dbc73a
AM
2680 return count;
2681}
eea6121a 2682
25dbc73a
AM
2683static inline unsigned long
2684apuinfo_list_element (unsigned long number)
2685{
2686 apuinfo_list * entry;
e656e369 2687
25dbc73a
AM
2688 for (entry = head;
2689 entry && number --;
2690 entry = entry->next)
2691 ;
252b5132 2692
25dbc73a
AM
2693 return entry ? entry->value : 0;
2694}
2695
2696static void
2697apuinfo_list_finish (void)
2698{
2699 apuinfo_list *entry;
2700
2701 for (entry = head; entry;)
252b5132 2702 {
25dbc73a
AM
2703 apuinfo_list *next = entry->next;
2704 free (entry);
2705 entry = next;
2706 }
9abc968f 2707
25dbc73a
AM
2708 head = NULL;
2709}
9abc968f 2710
25dbc73a
AM
2711/* Scan the input BFDs and create a linked list of
2712 the APUinfo values that will need to be emitted. */
9abc968f 2713
25dbc73a
AM
2714static void
2715ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2716{
2717 bfd *ibfd;
2718 asection *asec;
deddc40b
NS
2719 char *buffer = NULL;
2720 bfd_size_type largest_input_size = 0;
25dbc73a 2721 unsigned i;
25dbc73a
AM
2722 unsigned long length;
2723 const char *error_message = NULL;
9abc968f 2724
25dbc73a
AM
2725 if (link_info == NULL)
2726 return;
9abc968f 2727
25dbc73a 2728 apuinfo_list_init ();
252b5132 2729
25dbc73a 2730 /* Read in the input sections contents. */
c72f2fb2 2731 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
252b5132 2732 {
25dbc73a 2733 unsigned long datum;
252b5132 2734
25dbc73a
AM
2735 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2736 if (asec == NULL)
2737 continue;
252b5132 2738
695344c0 2739 /* xgettext:c-format */
871b3ab2 2740 error_message = _("corrupt %s section in %pB");
25dbc73a 2741 length = asec->size;
deddc40b
NS
2742 if (length < 20)
2743 goto fail;
2744
f2faa800 2745 apuinfo_set = TRUE;
deddc40b 2746 if (largest_input_size < asec->size)
25dbc73a 2747 {
deddc40b
NS
2748 if (buffer)
2749 free (buffer);
2750 largest_input_size = asec->size;
2751 buffer = bfd_malloc (largest_input_size);
2752 if (!buffer)
2753 return;
25dbc73a 2754 }
5b914448 2755
25dbc73a 2756 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
deddc40b 2757 || (bfd_bread (buffer, length, ibfd) != length))
25dbc73a 2758 {
695344c0 2759 /* xgettext:c-format */
871b3ab2 2760 error_message = _("unable to read in %s section from %pB");
25dbc73a
AM
2761 goto fail;
2762 }
252b5132 2763
25dbc73a
AM
2764 /* Verify the contents of the header. Note - we have to
2765 extract the values this way in order to allow for a
2766 host whose endian-ness is different from the target. */
deddc40b 2767 datum = bfd_get_32 (ibfd, buffer);
25dbc73a
AM
2768 if (datum != sizeof APUINFO_LABEL)
2769 goto fail;
252b5132 2770
deddc40b 2771 datum = bfd_get_32 (ibfd, buffer + 8);
25dbc73a
AM
2772 if (datum != 0x2)
2773 goto fail;
252b5132 2774
deddc40b 2775 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
25dbc73a 2776 goto fail;
252b5132 2777
25dbc73a 2778 /* Get the number of bytes used for apuinfo entries. */
deddc40b 2779 datum = bfd_get_32 (ibfd, buffer + 4);
25dbc73a
AM
2780 if (datum + 20 != length)
2781 goto fail;
2782
25dbc73a
AM
2783 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2784 for (i = 0; i < datum; i += 4)
deddc40b 2785 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
252b5132
RH
2786 }
2787
25dbc73a 2788 error_message = NULL;
252b5132 2789
f2faa800 2790 if (apuinfo_set)
deddc40b 2791 {
f2faa800
NS
2792 /* Compute the size of the output section. */
2793 unsigned num_entries = apuinfo_list_length ();
5b914448 2794
deddc40b
NS
2795 /* Set the output section size, if it exists. */
2796 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
f2faa800 2797
deddc40b
NS
2798 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2799 {
2800 ibfd = abfd;
695344c0 2801 /* xgettext:c-format */
871b3ab2 2802 error_message = _("warning: unable to set size of %s section in %pB");
deddc40b
NS
2803 }
2804 }
25dbc73a
AM
2805
2806 fail:
deddc40b
NS
2807 if (buffer)
2808 free (buffer);
25dbc73a
AM
2809
2810 if (error_message)
cd9af601 2811 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
25dbc73a 2812}
252b5132 2813
25dbc73a
AM
2814/* Prevent the output section from accumulating the input sections'
2815 contents. We have already stored this in our linked list structure. */
252b5132 2816
25dbc73a
AM
2817static bfd_boolean
2818ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2819 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM
2820 asection *asec,
2821 bfd_byte *contents ATTRIBUTE_UNUSED)
2822{
f2faa800 2823 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
252b5132
RH
2824}
2825
25dbc73a
AM
2826/* Finally we can generate the output section. */
2827
2828static void
2829ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2830{
25dbc73a
AM
2831 bfd_byte *buffer;
2832 asection *asec;
2833 unsigned i;
2834 unsigned num_entries;
2835 bfd_size_type length;
7619e7c7 2836
25dbc73a
AM
2837 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2838 if (asec == NULL)
2839 return;
2840
f2faa800 2841 if (!apuinfo_set)
25dbc73a
AM
2842 return;
2843
2844 length = asec->size;
2845 if (length < 20)
2846 return;
2847
2848 buffer = bfd_malloc (length);
2849 if (buffer == NULL)
7619e7c7 2850 {
4eca0228 2851 _bfd_error_handler
cf97bcb0 2852 (_("failed to allocate space for new APUinfo section"));
25dbc73a 2853 return;
7619e7c7 2854 }
7619e7c7 2855
25dbc73a
AM
2856 /* Create the apuinfo header. */
2857 num_entries = apuinfo_list_length ();
2858 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2859 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2860 bfd_put_32 (abfd, 0x2, buffer + 8);
2861 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2862
25dbc73a
AM
2863 length = 20;
2864 for (i = 0; i < num_entries; i++)
feee612b 2865 {
25dbc73a
AM
2866 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2867 length += 4;
feee612b 2868 }
feee612b 2869
25dbc73a 2870 if (length != asec->size)
cf97bcb0 2871 _bfd_error_handler (_("failed to compute new APUinfo section"));
252b5132 2872
25dbc73a 2873 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
cf97bcb0 2874 _bfd_error_handler (_("failed to install new APUinfo section"));
252b5132 2875
25dbc73a
AM
2876 free (buffer);
2877
2878 apuinfo_list_finish ();
252b5132 2879}
25dbc73a 2880\f
7382d32a 2881static bfd_boolean
c6dd29ce 2882is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
7382d32a 2883{
407aa07c 2884 bfd_byte buf[4 * 4];
7382d32a 2885
9e390558 2886 if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf))
7382d32a
AM
2887 return FALSE;
2888
c6dd29ce
AM
2889 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2890 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
407aa07c
AM
2891 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2892 && bfd_get_32 (abfd, buf + 12) == BCTR);
7382d32a
AM
2893}
2894
468392fb
AM
2895static bfd_boolean
2896section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2897{
2898 bfd_vma vma = *(bfd_vma *) ptr;
2899 return ((section->flags & SEC_ALLOC) != 0
2900 && section->vma <= vma
2901 && vma < section->vma + section->size);
2902}
2903
2904static long
2905ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2906 long dynsymcount, asymbol **dynsyms,
2907 asymbol **ret)
2908{
2909 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2910 asection *plt, *relplt, *dynamic, *glink;
2911 bfd_vma glink_vma = 0;
2912 bfd_vma resolv_vma = 0;
9e390558 2913 bfd_vma stub_off;
468392fb
AM
2914 asymbol *s;
2915 arelent *p;
9e390558 2916 long count, i, stub_delta;
468392fb
AM
2917 size_t size;
2918 char *names;
2919 bfd_byte buf[4];
2920
2921 *ret = NULL;
2922
2923 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2924 return 0;
2925
2926 if (dynsymcount <= 0)
2927 return 0;
2928
2929 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2930 if (relplt == NULL)
2931 return 0;
2932
2933 plt = bfd_get_section_by_name (abfd, ".plt");
2934 if (plt == NULL)
2935 return 0;
2936
2937 /* Call common code to handle old-style executable PLTs. */
2938 if (elf_section_flags (plt) & SHF_EXECINSTR)
2939 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2940 dynsymcount, dynsyms, ret);
2941
2942 /* If this object was prelinked, the prelinker stored the address
2943 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2944 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2945 if (dynamic != NULL)
2946 {
2947 bfd_byte *dynbuf, *extdyn, *extdynend;
2948 size_t extdynsize;
2949 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2950
2951 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2952 return -1;
2953
2954 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2955 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2956
2957 extdyn = dynbuf;
2958 extdynend = extdyn + dynamic->size;
2959 for (; extdyn < extdynend; extdyn += extdynsize)
2960 {
2961 Elf_Internal_Dyn dyn;
2962 (*swap_dyn_in) (abfd, extdyn, &dyn);
2963
2964 if (dyn.d_tag == DT_NULL)
2965 break;
2966
2967 if (dyn.d_tag == DT_PPC_GOT)
2968 {
2969 unsigned int g_o_t = dyn.d_un.d_val;
2970 asection *got = bfd_get_section_by_name (abfd, ".got");
2971 if (got != NULL
2972 && bfd_get_section_contents (abfd, got, buf,
2973 g_o_t - got->vma + 4, 4))
2974 glink_vma = bfd_get_32 (abfd, buf);
2975 break;
2976 }
2977 }
2978 free (dynbuf);
2979 }
2980
2981 /* Otherwise we read the first plt entry. */
2982 if (glink_vma == 0)
2983 {
2984 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2985 glink_vma = bfd_get_32 (abfd, buf);
2986 }
2987
2988 if (glink_vma == 0)
2989 return 0;
2990
2991 /* The .glink section usually does not survive the final
2992 link; search for the section (usually .text) where the
2993 glink stubs now reside. */
2994 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2995 if (glink == NULL)
2996 return 0;
2997
2998 /* Determine glink PLT resolver by reading the relative branch
2999 from the first glink stub. */
3000 if (bfd_get_section_contents (abfd, glink, buf,
3001 glink_vma - glink->vma, 4))
3002 {
3003 unsigned int insn = bfd_get_32 (abfd, buf);
3004
3005 /* The first glink stub may either branch to the resolver ... */
3006 insn ^= B;
3007 if ((insn & ~0x3fffffc) == 0)
3008 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3009
3010 /* ... or fall through a bunch of NOPs. */
3011 else if ((insn ^ B ^ NOP) == 0)
3012 for (i = 4;
3013 bfd_get_section_contents (abfd, glink, buf,
3014 glink_vma - glink->vma + i, 4);
3015 i += 4)
3016 if (bfd_get_32 (abfd, buf) != NOP)
3017 {
3018 resolv_vma = glink_vma + i;
3019 break;
3020 }
3021 }
3022
7382d32a 3023 count = relplt->size / sizeof (Elf32_External_Rela);
7382d32a
AM
3024 /* If the stubs are those for -shared/-pie then we might have
3025 multiple stubs for each plt entry. If that is the case then
3026 there is no way to associate stubs with their plt entries short
9e390558
AM
3027 of figuring out the GOT pointer value used in the stub.
3028 The offsets tested here need to cover all possible values of
3029 GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
3030 stub_off = glink_vma - glink->vma;
3031 for (stub_delta = 16; stub_delta <= 32; stub_delta += 8)
3032 if (is_nonpic_glink_stub (abfd, glink, stub_off - stub_delta))
3033 break;
3034 if (stub_delta > 32)
7382d32a
AM
3035 return 0;
3036
468392fb
AM
3037 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3038 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3039 return -1;
3040
468392fb
AM
3041 size = count * sizeof (asymbol);
3042 p = relplt->relocation;
3043 for (i = 0; i < count; i++, p++)
e054468f
AM
3044 {
3045 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3046 if (p->addend != 0)
3047 size += sizeof ("+0x") - 1 + 8;
3048 }
468392fb
AM
3049
3050 size += sizeof (asymbol) + sizeof ("__glink");
3051
3052 if (resolv_vma)
3053 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3054
3055 s = *ret = bfd_malloc (size);
3056 if (s == NULL)
3057 return -1;
3058
9e390558 3059 stub_off = glink_vma - glink->vma;
468392fb 3060 names = (char *) (s + count + 1 + (resolv_vma != 0));
1079403c
AM
3061 p = relplt->relocation + count - 1;
3062 for (i = 0; i < count; i++)
468392fb
AM
3063 {
3064 size_t len;
3065
9e390558
AM
3066 stub_off -= stub_delta;
3067 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3068 stub_off -= 32;
468392fb
AM
3069 *s = **p->sym_ptr_ptr;
3070 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3071 we are defining a symbol, ensure one of them is set. */
3072 if ((s->flags & BSF_LOCAL) == 0)
3073 s->flags |= BSF_GLOBAL;
6ba2a415 3074 s->flags |= BSF_SYNTHETIC;
468392fb 3075 s->section = glink;
9e390558 3076 s->value = stub_off;
468392fb
AM
3077 s->name = names;
3078 s->udata.p = NULL;
3079 len = strlen ((*p->sym_ptr_ptr)->name);
3080 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3081 names += len;
e054468f
AM
3082 if (p->addend != 0)
3083 {
3084 memcpy (names, "+0x", sizeof ("+0x") - 1);
3085 names += sizeof ("+0x") - 1;
3086 bfd_sprintf_vma (abfd, names, p->addend);
3087 names += strlen (names);
3088 }
468392fb
AM
3089 memcpy (names, "@plt", sizeof ("@plt"));
3090 names += sizeof ("@plt");
3091 ++s;
1079403c 3092 --p;
468392fb
AM
3093 }
3094
3095 /* Add a symbol at the start of the glink branch table. */
86a4952b 3096 memset (s, 0, sizeof *s);
468392fb 3097 s->the_bfd = abfd;
6ba2a415 3098 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3099 s->section = glink;
3100 s->value = glink_vma - glink->vma;
3101 s->name = names;
3102 memcpy (names, "__glink", sizeof ("__glink"));
3103 names += sizeof ("__glink");
3104 s++;
3105 count++;
3106
3107 if (resolv_vma)
3108 {
3109 /* Add a symbol for the glink PLT resolver. */
86a4952b 3110 memset (s, 0, sizeof *s);
468392fb 3111 s->the_bfd = abfd;
6ba2a415 3112 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3113 s->section = glink;
3114 s->value = resolv_vma - glink->vma;
3115 s->name = names;
3116 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3117 names += sizeof ("__glink_PLTresolve");
3118 s++;
3119 count++;
3120 }
3121
3122 return count;
3123}
3124\f
25dbc73a
AM
3125/* The following functions are specific to the ELF linker, while
3126 functions above are used generally. They appear in this file more
3127 or less in the order in which they are called. eg.
3128 ppc_elf_check_relocs is called early in the link process,
3129 ppc_elf_finish_dynamic_sections is one of the last functions
3130 called. */
252b5132 3131
a6aa5195 3132/* Track PLT entries needed for a given symbol. We might need more
a877a2b6 3133 than one glink entry per symbol when generating a pic binary. */
a6aa5195
AM
3134struct plt_entry
3135{
3136 struct plt_entry *next;
3137
3138 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3139 This field stores the offset into .got2 used to initialise the
a877a2b6
AM
3140 GOT pointer reg. It will always be at least 32768. (Current
3141 gcc always uses an offset of 32768, but ld -r will pack .got2
3142 sections together resulting in larger offsets). */
a6aa5195
AM
3143 bfd_vma addend;
3144
3145 /* The .got2 section. */
3146 asection *sec;
3147
3148 /* PLT refcount or offset. */
3149 union
3150 {
3151 bfd_signed_vma refcount;
3152 bfd_vma offset;
3153 } plt;
3154
3155 /* .glink stub offset. */
3156 bfd_vma glink_offset;
3157};
3158
7c8bbca5
AM
3159/* Of those relocs that might be copied as dynamic relocs, this
3160 function selects those that must be copied when linking a shared
3161 library or PIE, even when the symbol is local. */
252b5132 3162
1d483afe
AM
3163static int
3164must_be_dyn_reloc (struct bfd_link_info *info,
3165 enum elf_ppc_reloc_type r_type)
3166{
3167 switch (r_type)
3168 {
3169 default:
7c8bbca5
AM
3170 /* Only relative relocs can be resolved when the object load
3171 address isn't fixed. DTPREL32 is excluded because the
3172 dynamic linker needs to differentiate global dynamic from
3173 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
1d483afe
AM
3174 return 1;
3175
3176 case R_PPC_REL24:
3177 case R_PPC_REL14:
3178 case R_PPC_REL14_BRTAKEN:
3179 case R_PPC_REL14_BRNTAKEN:
3180 case R_PPC_REL32:
3181 return 0;
3182
3183 case R_PPC_TPREL32:
3184 case R_PPC_TPREL16:
3185 case R_PPC_TPREL16_LO:
3186 case R_PPC_TPREL16_HI:
3187 case R_PPC_TPREL16_HA:
7c8bbca5
AM
3188 /* These relocations are relative but in a shared library the
3189 linker doesn't know the thread pointer base. */
3190 return bfd_link_dll (info);
1d483afe
AM
3191 }
3192}
252b5132 3193
25dbc73a
AM
3194/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3195 copying dynamic variables from a shared lib into an app's dynbss
3196 section, and instead use a dynamic relocation to point into the
3197 shared lib. */
3198#define ELIMINATE_COPY_RELOCS 1
252b5132 3199
f95f8542
AM
3200/* Used to track dynamic relocations for local symbols. */
3201struct ppc_dyn_relocs
3202{
3203 struct ppc_dyn_relocs *next;
3204
3205 /* The input section of the reloc. */
3206 asection *sec;
3207
3208 /* Total number of relocs copied for the input section. */
3209 unsigned int count : 31;
3210
3211 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3212 unsigned int ifunc : 1;
3213};
3214
25dbc73a 3215/* PPC ELF linker hash entry. */
252b5132 3216
25dbc73a
AM
3217struct ppc_elf_link_hash_entry
3218{
3219 struct elf_link_hash_entry elf;
252b5132 3220
25dbc73a
AM
3221 /* If this symbol is used in the linker created sections, the processor
3222 specific backend uses this field to map the field into the offset
3223 from the beginning of the section. */
3224 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 3225
25dbc73a 3226 /* Track dynamic relocs copied for this symbol. */
6061a67d 3227 struct elf_dyn_relocs *dyn_relocs;
252b5132 3228
25dbc73a
AM
3229 /* Contexts in which symbol is used in the GOT (or TOC).
3230 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3231 corresponding relocs are encountered during check_relocs.
3232 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3233 indicate the corresponding GOT entry type is not needed. */
3234#define TLS_GD 1 /* GD reloc. */
3235#define TLS_LD 2 /* LD reloc. */
3236#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3237#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3238#define TLS_TLS 16 /* Any TLS reloc. */
3239#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
e054468f 3240#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
bac3c8c5 3241 unsigned char tls_mask;
4dc4a9a5
DJ
3242
3243 /* Nonzero if we have seen a small data relocation referring to this
3244 symbol. */
d3e454b9
AM
3245 unsigned char has_sda_refs : 1;
3246
3247 /* Flag use of given relocations. */
3248 unsigned char has_addr16_ha : 1;
3249 unsigned char has_addr16_lo : 1;
25dbc73a 3250};
252b5132 3251
25dbc73a
AM
3252#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3253
3254/* PPC ELF linker hash table. */
3255
3256struct ppc_elf_link_hash_table
3257{
3258 struct elf_link_hash_table elf;
3259
5446cbdf
AM
3260 /* Various options passed from the linker. */
3261 struct ppc_elf_params *params;
3262
25dbc73a 3263 /* Short-cuts to get to dynamic linker sections. */
d7128ce4 3264 asection *glink;
25dbc73a
AM
3265 asection *dynsbss;
3266 asection *relsbss;
c9a2f333 3267 elf_linker_section_t sdata[2];
25dbc73a 3268 asection *sbss;
6177242a 3269 asection *glink_eh_frame;
25dbc73a 3270
016687f8
AM
3271 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3272 asection *srelplt2;
3273
1d483afe 3274 /* Shortcut to __tls_get_addr. */
25dbc73a 3275 struct elf_link_hash_entry *tls_get_addr;
252b5132 3276
016687f8
AM
3277 /* The bfd that forced an old-style PLT. */
3278 bfd *old_bfd;
5b914448 3279
25dbc73a
AM
3280 /* TLS local dynamic got entry handling. */
3281 union {
3282 bfd_signed_vma refcount;
3283 bfd_vma offset;
3284 } tlsld_got;
252b5132 3285
c6dd29ce 3286 /* Offset of branch table to PltResolve function in glink. */
d7128ce4
AM
3287 bfd_vma glink_pltresolve;
3288
3b36f7e6
AM
3289 /* Size of reserved GOT entries. */
3290 unsigned int got_header_size;
3291 /* Non-zero if allocating the header left a gap. */
3292 unsigned int got_gap;
3293
4a3dc543
RS
3294 /* The type of PLT we have chosen to use. */
3295 enum ppc_elf_plt_type plt_type;
3296
9d8504b1 3297 /* True if the target system is VxWorks. */
016687f8 3298 unsigned int is_vxworks:1;
9d8504b1 3299
82e66161
AM
3300 /* Whether there exist local gnu indirect function resolvers,
3301 referenced by dynamic relocations. */
3302 unsigned int local_ifunc_resolver:1;
3303 unsigned int maybe_local_ifunc_resolver:1;
3304
9a23f96e
AM
3305 /* Set if tls optimization is enabled. */
3306 unsigned int do_tls_opt:1;
3307
9d8504b1
PB
3308 /* The size of PLT entries. */
3309 int plt_entry_size;
3310 /* The distance between adjacent PLT slots. */
3311 int plt_slot_size;
3312 /* The size of the first PLT entry. */
3313 int plt_initial_entry_size;
016687f8 3314
87d72d41
AM
3315 /* Small local sym cache. */
3316 struct sym_cache sym_cache;
25dbc73a 3317};
252b5132 3318
94caa966
AM
3319/* Rename some of the generic section flags to better document how they
3320 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3321
3322/* Nonzero if this section has TLS related relocations. */
3323#define has_tls_reloc sec_flg0
3324
3325/* Nonzero if this section has a call to __tls_get_addr. */
3326#define has_tls_get_addr_call sec_flg1
3327
25dbc73a 3328/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 3329
25dbc73a 3330#define ppc_elf_hash_table(p) \
4dfe6ac6
NC
3331 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3332 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
252b5132 3333
25dbc73a 3334/* Create an entry in a PPC ELF linker hash table. */
252b5132 3335
25dbc73a
AM
3336static struct bfd_hash_entry *
3337ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3338 struct bfd_hash_table *table,
3339 const char *string)
252b5132 3340{
25dbc73a
AM
3341 /* Allocate the structure if it has not already been allocated by a
3342 subclass. */
3343 if (entry == NULL)
3344 {
3345 entry = bfd_hash_allocate (table,
3346 sizeof (struct ppc_elf_link_hash_entry));
3347 if (entry == NULL)
3348 return entry;
3349 }
252b5132 3350
25dbc73a
AM
3351 /* Call the allocation method of the superclass. */
3352 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3353 if (entry != NULL)
3354 {
3355 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3356 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3357 ppc_elf_hash_entry (entry)->tls_mask = 0;
5240d94d 3358 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
25dbc73a 3359 }
252b5132 3360
25dbc73a 3361 return entry;
252b5132 3362}
3dab13f6 3363
25dbc73a 3364/* Create a PPC ELF linker hash table. */
3dab13f6 3365
25dbc73a
AM
3366static struct bfd_link_hash_table *
3367ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 3368{
25dbc73a 3369 struct ppc_elf_link_hash_table *ret;
76e7a751 3370 static struct ppc_elf_params default_params
407aa07c 3371 = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
3dab13f6 3372
25dbc73a
AM
3373 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3374 if (ret == NULL)
3375 return NULL;
3dab13f6 3376
66eb6687
AM
3377 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3378 ppc_elf_link_hash_newfunc,
4dfe6ac6
NC
3379 sizeof (struct ppc_elf_link_hash_entry),
3380 PPC32_ELF_DATA))
3dab13f6 3381 {
25dbc73a
AM
3382 free (ret);
3383 return NULL;
3384 }
58111eb7 3385
a6aa5195
AM
3386 ret->elf.init_plt_refcount.refcount = 0;
3387 ret->elf.init_plt_refcount.glist = NULL;
3388 ret->elf.init_plt_offset.offset = 0;
3389 ret->elf.init_plt_offset.glist = NULL;
3390
db434ba0
AM
3391 ret->params = &default_params;
3392
c9a2f333
AM
3393 ret->sdata[0].name = ".sdata";
3394 ret->sdata[0].sym_name = "_SDA_BASE_";
3395 ret->sdata[0].bss_name = ".sbss";
3396
3397 ret->sdata[1].name = ".sdata2";
3398 ret->sdata[1].sym_name = "_SDA2_BASE_";
3399 ret->sdata[1].bss_name = ".sbss2";
3400
9d8504b1
PB
3401 ret->plt_entry_size = 12;
3402 ret->plt_slot_size = 8;
3403 ret->plt_initial_entry_size = 72;
9d8504b1 3404
25dbc73a
AM
3405 return &ret->elf.root;
3406}
3dab13f6 3407
5446cbdf
AM
3408/* Hook linker params into hash table. */
3409
3410void
3411ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3412{
3413 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3414
3415 if (htab)
3416 htab->params = params;
76e7a751 3417 params->pagesize_p2 = bfd_log2 (params->pagesize);
5446cbdf
AM
3418}
3419
9d8504b1 3420/* Create .got and the related sections. */
3dab13f6 3421
25dbc73a
AM
3422static bfd_boolean
3423ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3424{
3425 struct ppc_elf_link_hash_table *htab;
3dab13f6 3426
25dbc73a
AM
3427 if (!_bfd_elf_create_got_section (abfd, info))
3428 return FALSE;
3dab13f6 3429
25dbc73a 3430 htab = ppc_elf_hash_table (info);
ce558b89 3431 if (!htab->is_vxworks)
9d8504b1
PB
3432 {
3433 /* The powerpc .got has a blrl instruction in it. Mark it
3434 executable. */
ce558b89
AM
3435 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3436 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3437 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
9d8504b1
PB
3438 return FALSE;
3439 }
3dab13f6 3440
25dbc73a
AM
3441 return TRUE;
3442}
3dab13f6 3443
93d1b056
AM
3444/* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3445 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3446 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3447
3448static bfd_boolean
3449ppc_elf_create_linker_section (bfd *abfd,
3450 struct bfd_link_info *info,
3451 flagword flags,
3452 elf_linker_section_t *lsect)
3453{
3454 asection *s;
3455
3456 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3457 | SEC_LINKER_CREATED);
3458
3459 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3460 if (s == NULL)
3461 return FALSE;
3462 lsect->section = s;
3463
3464 /* Define the sym on the first section of this name. */
3465 s = bfd_get_section_by_name (abfd, lsect->name);
3466
3467 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3468 if (lsect->sym == NULL)
3469 return FALSE;
3470 lsect->sym->root.u.def.value = 0x8000;
3471 return TRUE;
3472}
3473
e054468f
AM
3474static bfd_boolean
3475ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3476{
3477 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3478 asection *s;
3479 flagword flags;
691d2e9a 3480 int p2align;
e054468f
AM
3481
3482 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3483 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3484 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3485 htab->glink = s;
691d2e9a
AM
3486 p2align = htab->params->ppc476_workaround ? 6 : 4;
3487 if (p2align < htab->params->plt_stub_align)
3488 p2align = htab->params->plt_stub_align;
e054468f 3489 if (s == NULL
691d2e9a 3490 || !bfd_set_section_alignment (abfd, s, p2align))
e054468f
AM
3491 return FALSE;
3492
6177242a
AM
3493 if (!info->no_ld_generated_unwind_info)
3494 {
3495 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3496 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3497 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3498 htab->glink_eh_frame = s;
3499 if (s == NULL
3500 || !bfd_set_section_alignment (abfd, s, 2))
3501 return FALSE;
3502 }
3503
e054468f
AM
3504 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3505 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
ce558b89 3506 htab->elf.iplt = s;
e054468f
AM
3507 if (s == NULL
3508 || !bfd_set_section_alignment (abfd, s, 4))
3509 return FALSE;
3510
3511 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3512 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3513 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
ce558b89 3514 htab->elf.irelplt = s;
e054468f
AM
3515 if (s == NULL
3516 || ! bfd_set_section_alignment (abfd, s, 2))
3517 return FALSE;
93d1b056
AM
3518
3519 if (!ppc_elf_create_linker_section (abfd, info, 0,
3520 &htab->sdata[0]))
3521 return FALSE;
3522
3523 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3524 &htab->sdata[1]))
3525 return FALSE;
3526
e054468f
AM
3527 return TRUE;
3528}
3529
25dbc73a
AM
3530/* We have to create .dynsbss and .rela.sbss here so that they get mapped
3531 to output sections (just like _bfd_elf_create_dynamic_sections has
3532 to create .dynbss and .rela.bss). */
3dab13f6 3533
25dbc73a
AM
3534static bfd_boolean
3535ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3536{
3537 struct ppc_elf_link_hash_table *htab;
3538 asection *s;
3539 flagword flags;
3dab13f6 3540
25dbc73a 3541 htab = ppc_elf_hash_table (info);
3dab13f6 3542
ce558b89 3543 if (htab->elf.sgot == NULL
25dbc73a 3544 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
3545 return FALSE;
3546
25dbc73a
AM
3547 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3548 return FALSE;
3dab13f6 3549
e054468f
AM
3550 if (htab->glink == NULL
3551 && !ppc_elf_create_glink (abfd, info))
d7128ce4 3552 return FALSE;
3dab13f6 3553
14b2f831
AM
3554 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3555 SEC_ALLOC | SEC_LINKER_CREATED);
3b36f7e6 3556 htab->dynsbss = s;
3496cb2a 3557 if (s == NULL)
25dbc73a 3558 return FALSE;
3dab13f6 3559
0e1862bb 3560 if (! bfd_link_pic (info))
25dbc73a 3561 {
e054468f
AM
3562 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3563 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3564 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 3565 htab->relsbss = s;
25dbc73a 3566 if (s == NULL
25dbc73a
AM
3567 || ! bfd_set_section_alignment (abfd, s, 2))
3568 return FALSE;
3569 }
3dab13f6 3570
711de32c
RS
3571 if (htab->is_vxworks
3572 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3573 return FALSE;
9d8504b1 3574
ce558b89 3575 s = htab->elf.splt;
3b36f7e6 3576 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
3577 if (htab->plt_type == PLT_VXWORKS)
3578 /* The VxWorks PLT is a loaded section with contents. */
3579 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
3580 return bfd_set_section_flags (abfd, s, flags);
3581}
3dab13f6 3582
25dbc73a 3583/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 3584
25dbc73a 3585static void
fcfa13d2 3586ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
3587 struct elf_link_hash_entry *dir,
3588 struct elf_link_hash_entry *ind)
3589{
3590 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 3591
25dbc73a
AM
3592 edir = (struct ppc_elf_link_hash_entry *) dir;
3593 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 3594
c79d6685
AM
3595 edir->tls_mask |= eind->tls_mask;
3596 edir->has_sda_refs |= eind->has_sda_refs;
3597
e81830c5
AM
3598 if (edir->elf.versioned != versioned_hidden)
3599 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
c79d6685
AM
3600 edir->elf.ref_regular |= eind->elf.ref_regular;
3601 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4a7e5234 3602 edir->elf.non_got_ref |= eind->elf.non_got_ref;
c79d6685
AM
3603 edir->elf.needs_plt |= eind->elf.needs_plt;
3604 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3605
287c7eaf
AM
3606 /* If we were called to copy over info for a weak sym, that's all. */
3607 if (eind->elf.root.type != bfd_link_hash_indirect)
3608 return;
3609
25dbc73a
AM
3610 if (eind->dyn_relocs != NULL)
3611 {
3612 if (edir->dyn_relocs != NULL)
3dab13f6 3613 {
6061a67d
AM
3614 struct elf_dyn_relocs **pp;
3615 struct elf_dyn_relocs *p;
3dab13f6 3616
fcfa13d2 3617 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
3618 list. Merge any entries against the same section. */
3619 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 3620 {
6061a67d 3621 struct elf_dyn_relocs *q;
25dbc73a
AM
3622
3623 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3624 if (q->sec == p->sec)
3625 {
3626 q->pc_count += p->pc_count;
3627 q->count += p->count;
3628 *pp = p->next;
3629 break;
3630 }
3631 if (q == NULL)
3632 pp = &p->next;
3dab13f6 3633 }
25dbc73a 3634 *pp = edir->dyn_relocs;
3dab13f6 3635 }
25dbc73a
AM
3636
3637 edir->dyn_relocs = eind->dyn_relocs;
3638 eind->dyn_relocs = NULL;
3dab13f6 3639 }
3dab13f6 3640
a6aa5195
AM
3641 /* Copy over the GOT refcount entries that we may have already seen to
3642 the symbol which just became indirect. */
fcfa13d2
AM
3643 edir->elf.got.refcount += eind->elf.got.refcount;
3644 eind->elf.got.refcount = 0;
a6aa5195
AM
3645
3646 /* And plt entries. */
3647 if (eind->elf.plt.plist != NULL)
3648 {
3649 if (edir->elf.plt.plist != NULL)
3650 {
3651 struct plt_entry **entp;
3652 struct plt_entry *ent;
3653
3654 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3655 {
3656 struct plt_entry *dent;
3657
3658 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3659 if (dent->sec == ent->sec && dent->addend == ent->addend)
3660 {
3661 dent->plt.refcount += ent->plt.refcount;
3662 *entp = ent->next;
3663 break;
3664 }
3665 if (dent == NULL)
3666 entp = &ent->next;
3667 }
3668 *entp = edir->elf.plt.plist;
3669 }
3670
3671 edir->elf.plt.plist = eind->elf.plt.plist;
3672 eind->elf.plt.plist = NULL;
3673 }
3674
fcfa13d2 3675 if (eind->elf.dynindx != -1)
25dbc73a 3676 {
fcfa13d2
AM
3677 if (edir->elf.dynindx != -1)
3678 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3679 edir->elf.dynstr_index);
a6aa5195
AM
3680 edir->elf.dynindx = eind->elf.dynindx;
3681 edir->elf.dynstr_index = eind->elf.dynstr_index;
3682 eind->elf.dynindx = -1;
3683 eind->elf.dynstr_index = 0;
25dbc73a 3684 }
25dbc73a 3685}
3dab13f6 3686
25dbc73a
AM
3687/* Hook called by the linker routine which adds symbols from an object
3688 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3689
25dbc73a
AM
3690static bfd_boolean
3691ppc_elf_add_symbol_hook (bfd *abfd,
3692 struct bfd_link_info *info,
3693 Elf_Internal_Sym *sym,
3694 const char **namep ATTRIBUTE_UNUSED,
3695 flagword *flagsp ATTRIBUTE_UNUSED,
3696 asection **secp,
3697 bfd_vma *valp)
3698{
3699 if (sym->st_shndx == SHN_COMMON
0e1862bb 3700 && !bfd_link_relocatable (info)
0c8d6e5c
AM
3701 && is_ppc_elf (info->output_bfd)
3702 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
3703 {
3704 /* Common symbols less than or equal to -G nn bytes are automatically
3705 put into .sbss. */
3706 struct ppc_elf_link_hash_table *htab;
3dab13f6 3707
25dbc73a
AM
3708 htab = ppc_elf_hash_table (info);
3709 if (htab->sbss == NULL)
3710 {
644285ef 3711 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3712
644285ef
AM
3713 if (!htab->elf.dynobj)
3714 htab->elf.dynobj = abfd;
3715
3496cb2a
L
3716 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3717 ".sbss",
3718 flags);
3719 if (htab->sbss == NULL)
25dbc73a 3720 return FALSE;
3dab13f6 3721 }
3dab13f6 3722
25dbc73a
AM
3723 *secp = htab->sbss;
3724 *valp = sym->st_size;
3725 }
3dab13f6 3726
a43942db 3727 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
f1885d1e
AM
3728 && (abfd->flags & DYNAMIC) == 0
3729 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
a43942db 3730 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
e054468f 3731
25dbc73a 3732 return TRUE;
3dab13f6
AM
3733}
3734\f
25dbc73a
AM
3735/* Find a linker generated pointer with a given addend and type. */
3736
3737static elf_linker_section_pointers_t *
3738elf_find_pointer_linker_section
3739 (elf_linker_section_pointers_t *linker_pointers,
3740 bfd_vma addend,
3741 elf_linker_section_t *lsect)
252b5132 3742{
25dbc73a
AM
3743 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3744 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3745 return linker_pointers;
252b5132 3746
25dbc73a
AM
3747 return NULL;
3748}
3749
3750/* Allocate a pointer to live in a linker created section. */
3751
3752static bfd_boolean
93d1b056
AM
3753elf_allocate_pointer_linker_section (bfd *abfd,
3754 elf_linker_section_t *lsect,
3755 struct elf_link_hash_entry *h,
3756 const Elf_Internal_Rela *rel)
25dbc73a
AM
3757{
3758 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3759 elf_linker_section_pointers_t *linker_section_ptr;
3760 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3761 bfd_size_type amt;
3762
3763 BFD_ASSERT (lsect != NULL);
3764
3765 /* Is this a global symbol? */
3766 if (h != NULL)
3767 {
3768 struct ppc_elf_link_hash_entry *eh;
3769
3770 /* Has this symbol already been allocated? If so, our work is done. */
3771 eh = (struct ppc_elf_link_hash_entry *) h;
3772 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3773 rel->r_addend,
3774 lsect))
3775 return TRUE;
3776
3777 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3778 }
3779 else
3780 {
0c8d6e5c 3781 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3782
25dbc73a
AM
3783 /* Allocation of a pointer to a local symbol. */
3784 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3785
3786 /* Allocate a table to hold the local symbols if first time. */
3787 if (!ptr)
3788 {
0ffa91dd 3789 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3790
3791 amt = num_symbols;
3792 amt *= sizeof (elf_linker_section_pointers_t *);
3793 ptr = bfd_zalloc (abfd, amt);
3794
3795 if (!ptr)
3796 return FALSE;
3797
3798 elf_local_ptr_offsets (abfd) = ptr;
3799 }
3800
3801 /* Has this symbol already been allocated? If so, our work is done. */
3802 if (elf_find_pointer_linker_section (ptr[r_symndx],
3803 rel->r_addend,
3804 lsect))
3805 return TRUE;
252b5132 3806
25dbc73a 3807 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3808 }
41fcb14e 3809
25dbc73a
AM
3810 /* Allocate space for a pointer in the linker section, and allocate
3811 a new pointer record from internal memory. */
3812 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3813 amt = sizeof (elf_linker_section_pointers_t);
3814 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3815
25dbc73a 3816 if (!linker_section_ptr)
7619e7c7 3817 return FALSE;
41fcb14e 3818
25dbc73a
AM
3819 linker_section_ptr->next = *ptr_linker_section_ptr;
3820 linker_section_ptr->addend = rel->r_addend;
3821 linker_section_ptr->lsect = lsect;
25dbc73a 3822 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3823
93d1b056
AM
3824 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3825 return FALSE;
25dbc73a
AM
3826 linker_section_ptr->offset = lsect->section->size;
3827 lsect->section->size += 4;
7619e7c7 3828
25dbc73a
AM
3829#ifdef DEBUG
3830 fprintf (stderr,
3831 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3832 lsect->name, (long) linker_section_ptr->offset,
3833 (long) lsect->section->size);
3834#endif
7619e7c7
AM
3835
3836 return TRUE;
41fcb14e
AM
3837}
3838
e054468f 3839static struct plt_entry **
25dbc73a
AM
3840update_local_sym_info (bfd *abfd,
3841 Elf_Internal_Shdr *symtab_hdr,
3842 unsigned long r_symndx,
3843 int tls_type)
252b5132 3844{
25dbc73a 3845 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
e054468f 3846 struct plt_entry **local_plt;
bac3c8c5 3847 unsigned char *local_got_tls_masks;
252b5132 3848
25dbc73a 3849 if (local_got_refcounts == NULL)
252b5132 3850 {
25dbc73a
AM
3851 bfd_size_type size = symtab_hdr->sh_info;
3852
e054468f
AM
3853 size *= (sizeof (*local_got_refcounts)
3854 + sizeof (*local_plt)
3855 + sizeof (*local_got_tls_masks));
25dbc73a
AM
3856 local_got_refcounts = bfd_zalloc (abfd, size);
3857 if (local_got_refcounts == NULL)
e054468f 3858 return NULL;
25dbc73a 3859 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3860 }
41fcb14e 3861
e054468f 3862 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
bac3c8c5 3863 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
25dbc73a 3864 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
3865 if (tls_type != PLT_IFUNC)
3866 local_got_refcounts[r_symndx] += 1;
3867 return local_plt + r_symndx;
25dbc73a 3868}
41fcb14e 3869
a6aa5195 3870static bfd_boolean
3ec01793 3871update_plt_info (bfd *abfd, struct plt_entry **plist,
a6aa5195
AM
3872 asection *sec, bfd_vma addend)
3873{
3874 struct plt_entry *ent;
3875
32af9f6e
AM
3876 if (addend < 32768)
3877 sec = NULL;
3ec01793 3878 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3879 if (ent->sec == sec && ent->addend == addend)
3880 break;
3881 if (ent == NULL)
3882 {
3883 bfd_size_type amt = sizeof (*ent);
3884 ent = bfd_alloc (abfd, amt);
3885 if (ent == NULL)
3886 return FALSE;
3ec01793 3887 ent->next = *plist;
a6aa5195
AM
3888 ent->sec = sec;
3889 ent->addend = addend;
3890 ent->plt.refcount = 0;
3ec01793 3891 *plist = ent;
a6aa5195
AM
3892 }
3893 ent->plt.refcount += 1;
3894 return TRUE;
3895}
3896
3897static struct plt_entry *
3ec01793 3898find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
a6aa5195
AM
3899{
3900 struct plt_entry *ent;
3901
3902 if (addend < 32768)
3903 sec = NULL;
3ec01793 3904 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3905 if (ent->sec == sec && ent->addend == addend)
3906 break;
3907 return ent;
3908}
3909
e054468f
AM
3910static bfd_boolean
3911is_branch_reloc (enum elf_ppc_reloc_type r_type)
3912{
3913 return (r_type == R_PPC_PLTREL24
3914 || r_type == R_PPC_LOCAL24PC
3915 || r_type == R_PPC_REL24
3916 || r_type == R_PPC_REL14
3917 || r_type == R_PPC_REL14_BRTAKEN
3918 || r_type == R_PPC_REL14_BRNTAKEN
3919 || r_type == R_PPC_ADDR24
3920 || r_type == R_PPC_ADDR14
3921 || r_type == R_PPC_ADDR14_BRTAKEN
dfdaec14
AJ
3922 || r_type == R_PPC_ADDR14_BRNTAKEN
3923 || r_type == R_PPC_VLE_REL24);
e054468f
AM
3924}
3925
25dbc73a
AM
3926static void
3927bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3928{
4eca0228 3929 _bfd_error_handler
695344c0 3930 /* xgettext:c-format */
871b3ab2 3931 (_("%pB: relocation %s cannot be used when making a shared object"),
25dbc73a
AM
3932 abfd,
3933 ppc_elf_howto_table[r_type]->name);
3934 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3935}
3936
25dbc73a
AM
3937/* Look through the relocs for a section during the first phase, and
3938 allocate space in the global offset table or procedure linkage
3939 table. */
252b5132 3940
b34976b6 3941static bfd_boolean
25dbc73a
AM
3942ppc_elf_check_relocs (bfd *abfd,
3943 struct bfd_link_info *info,
3944 asection *sec,
3945 const Elf_Internal_Rela *relocs)
252b5132 3946{
7619e7c7 3947 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3948 Elf_Internal_Shdr *symtab_hdr;
3949 struct elf_link_hash_entry **sym_hashes;
3950 const Elf_Internal_Rela *rel;
3951 const Elf_Internal_Rela *rel_end;
a6aa5195 3952 asection *got2, *sreloc;
727fc41e 3953 struct elf_link_hash_entry *tga;
25dbc73a 3954
0e1862bb 3955 if (bfd_link_relocatable (info))
25dbc73a 3956 return TRUE;
252b5132 3957
c87b5a93
AM
3958 /* Don't do anything special with non-loaded, non-alloced sections.
3959 In particular, any relocs in such sections should not affect GOT
3960 and PLT reference counting (ie. we don't allow them to create GOT
3961 or PLT entries), there's no possibility or desire to optimize TLS
3962 relocs, and there's not much point in propagating relocs to shared
3963 libs that the dynamic linker won't relocate. */
3964 if ((sec->flags & SEC_ALLOC) == 0)
3965 return TRUE;
3966
252b5132 3967#ifdef DEBUG
871b3ab2 3968 _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
25dbc73a 3969 sec, abfd);
252b5132
RH
3970#endif
3971
0c8d6e5c 3972 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3973
25dbc73a
AM
3974 /* Initialize howto table if not already done. */
3975 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3976 ppc_elf_howto_init ();
3977
7619e7c7 3978 htab = ppc_elf_hash_table (info);
25f23106
AM
3979 if (htab->glink == NULL)
3980 {
3981 if (htab->elf.dynobj == NULL)
3982 htab->elf.dynobj = abfd;
3983 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3984 return FALSE;
3985 }
727fc41e
AM
3986 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3987 FALSE, FALSE, TRUE);
0ffa91dd 3988 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 3989 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3990 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
3991 sreloc = NULL;
3992
3993 rel_end = relocs + sec->reloc_count;
3994 for (rel = relocs; rel < rel_end; rel++)
3995 {
3996 unsigned long r_symndx;
3997 enum elf_ppc_reloc_type r_type;
3998 struct elf_link_hash_entry *h;
727fc41e 3999 int tls_type;
cbf95972 4000 struct plt_entry **ifunc;
25dbc73a
AM
4001
4002 r_symndx = ELF32_R_SYM (rel->r_info);
4003 if (r_symndx < symtab_hdr->sh_info)
4004 h = NULL;
4005 else
973a3492
L
4006 {
4007 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4008 while (h->root.type == bfd_link_hash_indirect
4009 || h->root.type == bfd_link_hash_warning)
4010 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4011 }
25dbc73a
AM
4012
4013 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4014 This shows up in particular in an R_PPC_ADDR32 in the eabi
4015 startup code. */
3b36f7e6 4016 if (h != NULL
ce558b89 4017 && htab->elf.sgot == NULL
3b36f7e6 4018 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 4019 {
3b36f7e6
AM
4020 if (htab->elf.dynobj == NULL)
4021 htab->elf.dynobj = abfd;
4022 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4023 return FALSE;
4024 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 4025 }
252b5132 4026
727fc41e 4027 tls_type = 0;
de972ffa 4028 r_type = ELF32_R_TYPE (rel->r_info);
cbf95972 4029 ifunc = NULL;
06a162cf 4030 if (h == NULL && !htab->is_vxworks)
e054468f 4031 {
06a162cf
AM
4032 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4033 abfd, r_symndx);
4034 if (isym == NULL)
4035 return FALSE;
4036
0bed072f 4037 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
e054468f 4038 {
0bed072f 4039 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
06a162cf
AM
4040 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4041 PLT_IFUNC);
4042 if (ifunc == NULL)
e054468f
AM
4043 return FALSE;
4044
06a162cf
AM
4045 /* STT_GNU_IFUNC symbols must have a PLT entry;
4046 In a non-pie executable even when there are
4047 no plt calls. */
0e1862bb 4048 if (!bfd_link_pic (info)
0bed072f 4049 || is_branch_reloc (r_type))
e054468f 4050 {
0bed072f
AM
4051 bfd_vma addend = 0;
4052 if (r_type == R_PPC_PLTREL24)
4053 {
4054 ppc_elf_tdata (abfd)->makes_plt_call = 1;
0e1862bb 4055 if (bfd_link_pic (info))
0bed072f
AM
4056 addend = rel->r_addend;
4057 }
4058 if (!update_plt_info (abfd, ifunc, got2, addend))
4059 return FALSE;
e054468f
AM
4060 }
4061 }
25f23106
AM
4062 }
4063
de972ffa
AM
4064 if (!htab->is_vxworks
4065 && is_branch_reloc (r_type)
4066 && h != NULL
4067 && h == tga)
25f23106 4068 {
de972ffa
AM
4069 if (rel != relocs
4070 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4071 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4072 /* We have a new-style __tls_get_addr call with a marker
4073 reloc. */
4074 ;
4075 else
4076 /* Mark this section as having an old-style call. */
4077 sec->has_tls_get_addr_call = 1;
e054468f 4078 }
727fc41e 4079
25dbc73a
AM
4080 switch (r_type)
4081 {
727fc41e
AM
4082 case R_PPC_TLSGD:
4083 case R_PPC_TLSLD:
4084 /* These special tls relocs tie a call to __tls_get_addr with
4085 its parameter symbol. */
4086 break;
4087
25dbc73a
AM
4088 case R_PPC_GOT_TLSLD16:
4089 case R_PPC_GOT_TLSLD16_LO:
4090 case R_PPC_GOT_TLSLD16_HI:
4091 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4092 tls_type = TLS_TLS | TLS_LD;
4093 goto dogottls;
252b5132 4094
25dbc73a
AM
4095 case R_PPC_GOT_TLSGD16:
4096 case R_PPC_GOT_TLSGD16_LO:
4097 case R_PPC_GOT_TLSGD16_HI:
4098 case R_PPC_GOT_TLSGD16_HA:
4099 tls_type = TLS_TLS | TLS_GD;
4100 goto dogottls;
4101
4102 case R_PPC_GOT_TPREL16:
4103 case R_PPC_GOT_TPREL16_LO:
4104 case R_PPC_GOT_TPREL16_HI:
4105 case R_PPC_GOT_TPREL16_HA:
7c8bbca5 4106 if (bfd_link_dll (info))
25dbc73a
AM
4107 info->flags |= DF_STATIC_TLS;
4108 tls_type = TLS_TLS | TLS_TPREL;
4109 goto dogottls;
4110
4111 case R_PPC_GOT_DTPREL16:
4112 case R_PPC_GOT_DTPREL16_LO:
4113 case R_PPC_GOT_DTPREL16_HI:
4114 case R_PPC_GOT_DTPREL16_HA:
4115 tls_type = TLS_TLS | TLS_DTPREL;
4116 dogottls:
4117 sec->has_tls_reloc = 1;
1a0670f3 4118 /* Fall through. */
252b5132 4119
25dbc73a
AM
4120 /* GOT16 relocations */
4121 case R_PPC_GOT16:
4122 case R_PPC_GOT16_LO:
4123 case R_PPC_GOT16_HI:
4124 case R_PPC_GOT16_HA:
4125 /* This symbol requires a global offset table entry. */
ce558b89 4126 if (htab->elf.sgot == NULL)
25dbc73a
AM
4127 {
4128 if (htab->elf.dynobj == NULL)
4129 htab->elf.dynobj = abfd;
4130 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4131 return FALSE;
4132 }
4133 if (h != NULL)
4134 {
4135 h->got.refcount += 1;
4136 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4137 }
4138 else
4139 /* This is a global offset table entry for a local symbol. */
4140 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4141 return FALSE;
91e21fb7
AM
4142
4143 /* We may also need a plt entry if the symbol turns out to be
4144 an ifunc. */
0e1862bb 4145 if (h != NULL && !bfd_link_pic (info))
91e21fb7
AM
4146 {
4147 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4148 return FALSE;
4149 }
25dbc73a 4150 break;
252b5132 4151
25dbc73a
AM
4152 /* Indirect .sdata relocation. */
4153 case R_PPC_EMB_SDAI16:
0e1862bb 4154 if (bfd_link_pic (info))
25dbc73a
AM
4155 {
4156 bad_shared_reloc (abfd, r_type);
4157 return FALSE;
4158 }
93d1b056
AM
4159 htab->sdata[0].sym->ref_regular = 1;
4160 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4161 h, rel))
25dbc73a 4162 return FALSE;
046183de
AM
4163 if (h != NULL)
4164 {
4165 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4166 h->non_got_ref = TRUE;
4167 }
25dbc73a 4168 break;
252b5132 4169
25dbc73a
AM
4170 /* Indirect .sdata2 relocation. */
4171 case R_PPC_EMB_SDA2I16:
0e1862bb 4172 if (bfd_link_pic (info))
25dbc73a
AM
4173 {
4174 bad_shared_reloc (abfd, r_type);
4175 return FALSE;
4176 }
93d1b056
AM
4177 htab->sdata[1].sym->ref_regular = 1;
4178 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4179 h, rel))
25dbc73a 4180 return FALSE;
046183de
AM
4181 if (h != NULL)
4182 {
4183 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4184 h->non_got_ref = TRUE;
4185 }
25dbc73a 4186 break;
252b5132 4187
93d1b056
AM
4188 case R_PPC_SDAREL16:
4189 htab->sdata[0].sym->ref_regular = 1;
1a0670f3 4190 /* Fall through. */
93d1b056 4191
b9c361e0
JL
4192 case R_PPC_VLE_SDAREL_LO16A:
4193 case R_PPC_VLE_SDAREL_LO16D:
4194 case R_PPC_VLE_SDAREL_HI16A:
4195 case R_PPC_VLE_SDAREL_HI16D:
4196 case R_PPC_VLE_SDAREL_HA16A:
4197 case R_PPC_VLE_SDAREL_HA16D:
046183de
AM
4198 if (h != NULL)
4199 {
4200 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4201 h->non_got_ref = TRUE;
4202 }
4203 break;
4204
b9c361e0
JL
4205 case R_PPC_VLE_REL8:
4206 case R_PPC_VLE_REL15:
4207 case R_PPC_VLE_REL24:
4208 case R_PPC_VLE_LO16A:
4209 case R_PPC_VLE_LO16D:
4210 case R_PPC_VLE_HI16A:
4211 case R_PPC_VLE_HI16D:
4212 case R_PPC_VLE_HA16A:
4213 case R_PPC_VLE_HA16D:
83eef883 4214 case R_PPC_VLE_ADDR20:
b9c361e0
JL
4215 break;
4216
25dbc73a 4217 case R_PPC_EMB_SDA2REL:
0e1862bb 4218 if (bfd_link_pic (info))
046183de
AM
4219 {
4220 bad_shared_reloc (abfd, r_type);
4221 return FALSE;
4222 }
93d1b056 4223 htab->sdata[1].sym->ref_regular = 1;
046183de
AM
4224 if (h != NULL)
4225 {
4226 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4227 h->non_got_ref = TRUE;
4228 }
4229 break;
4230
b9c361e0
JL
4231 case R_PPC_VLE_SDA21_LO:
4232 case R_PPC_VLE_SDA21:
25dbc73a
AM
4233 case R_PPC_EMB_SDA21:
4234 case R_PPC_EMB_RELSDA:
0e1862bb 4235 if (bfd_link_pic (info))
046183de
AM
4236 {
4237 bad_shared_reloc (abfd, r_type);
4238 return FALSE;
4239 }
046183de
AM
4240 if (h != NULL)
4241 {
4242 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4243 h->non_got_ref = TRUE;
4244 }
4245 break;
4246
25dbc73a
AM
4247 case R_PPC_EMB_NADDR32:
4248 case R_PPC_EMB_NADDR16:
4249 case R_PPC_EMB_NADDR16_LO:
4250 case R_PPC_EMB_NADDR16_HI:
4251 case R_PPC_EMB_NADDR16_HA:
0e1862bb 4252 if (bfd_link_pic (info))
25dbc73a
AM
4253 {
4254 bad_shared_reloc (abfd, r_type);
4255 return FALSE;
4256 }
4dc4a9a5 4257 if (h != NULL)
046183de 4258 h->non_got_ref = TRUE;
25dbc73a 4259 break;
252b5132 4260
25dbc73a 4261 case R_PPC_PLTREL24:
de972ffa 4262 if (h == NULL)
6d78d0b9
AM
4263 break;
4264 /* Fall through */
4265 case R_PPC_PLT32:
25dbc73a
AM
4266 case R_PPC_PLTREL32:
4267 case R_PPC_PLT16_LO:
4268 case R_PPC_PLT16_HI:
4269 case R_PPC_PLT16_HA:
4270#ifdef DEBUG
4271 fprintf (stderr, "Reloc requires a PLT entry\n");
4272#endif
cbf95972 4273 /* This symbol requires a procedure linkage table entry. */
25dbc73a
AM
4274 if (h == NULL)
4275 {
cbf95972
AM
4276 if (ifunc == NULL)
4277 {
4278 /* It does not make sense to have a procedure linkage
4279 table entry for a non-ifunc local symbol. */
4280 info->callbacks->einfo
695344c0 4281 /* xgettext:c-format */
174d0a74 4282 (_("%H: %s reloc against local symbol\n"),
cbf95972
AM
4283 abfd, sec, rel->r_offset,
4284 ppc_elf_howto_table[r_type]->name);
4285 bfd_set_error (bfd_error_bad_value);
4286 return FALSE;
4287 }
25dbc73a 4288 }
a6aa5195
AM
4289 else
4290 {
016687f8 4291 bfd_vma addend = 0;
ee05f2fe 4292
016687f8
AM
4293 if (r_type == R_PPC_PLTREL24)
4294 {
4295 ppc_elf_tdata (abfd)->makes_plt_call = 1;
0e1862bb 4296 if (bfd_link_pic (info))
a877a2b6 4297 addend = rel->r_addend;
016687f8 4298 }
a6aa5195 4299 h->needs_plt = 1;
32af9f6e 4300 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
a6aa5195
AM
4301 return FALSE;
4302 }
25dbc73a 4303 break;
ee05f2fe 4304
25dbc73a
AM
4305 /* The following relocations don't need to propagate the
4306 relocation if linking a shared object since they are
4307 section relative. */
4308 case R_PPC_SECTOFF:
4309 case R_PPC_SECTOFF_LO:
4310 case R_PPC_SECTOFF_HI:
4311 case R_PPC_SECTOFF_HA:
4312 case R_PPC_DTPREL16:
4313 case R_PPC_DTPREL16_LO:
4314 case R_PPC_DTPREL16_HI:
4315 case R_PPC_DTPREL16_HA:
4316 case R_PPC_TOC16:
4317 break;
252b5132 4318
d7128ce4
AM
4319 case R_PPC_REL16:
4320 case R_PPC_REL16_LO:
4321 case R_PPC_REL16_HI:
4322 case R_PPC_REL16_HA:
a680de9a 4323 case R_PPC_REL16DX_HA:
016687f8 4324 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
4325 break;
4326
a6aa5195 4327 /* These are just markers. */
25dbc73a
AM
4328 case R_PPC_TLS:
4329 case R_PPC_EMB_MRKREF:
4330 case R_PPC_NONE:
4331 case R_PPC_max:
32af9f6e
AM
4332 case R_PPC_RELAX:
4333 case R_PPC_RELAX_PLT:
4334 case R_PPC_RELAX_PLTREL24:
7ba71655 4335 case R_PPC_16DX_HA:
25dbc73a 4336 break;
252b5132 4337
25dbc73a
AM
4338 /* These should only appear in dynamic objects. */
4339 case R_PPC_COPY:
4340 case R_PPC_GLOB_DAT:
4341 case R_PPC_JMP_SLOT:
4342 case R_PPC_RELATIVE:
e054468f 4343 case R_PPC_IRELATIVE:
25dbc73a 4344 break;
252b5132 4345
25dbc73a
AM
4346 /* These aren't handled yet. We'll report an error later. */
4347 case R_PPC_ADDR30:
4348 case R_PPC_EMB_RELSEC16:
4349 case R_PPC_EMB_RELST_LO:
4350 case R_PPC_EMB_RELST_HI:
4351 case R_PPC_EMB_RELST_HA:
4352 case R_PPC_EMB_BIT_FLD:
4353 break;
252b5132 4354
25dbc73a
AM
4355 /* This refers only to functions defined in the shared library. */
4356 case R_PPC_LOCAL24PC:
727fc41e 4357 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
4358 {
4359 htab->plt_type = PLT_OLD;
4360 htab->old_bfd = abfd;
4361 }
c7e17e05
AM
4362 if (h != NULL && h->type == STT_GNU_IFUNC)
4363 {
c7e17e05
AM
4364 h->needs_plt = 1;
4365 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4366 return FALSE;
4367 }
25dbc73a 4368 break;
252b5132 4369
25dbc73a
AM
4370 /* This relocation describes the C++ object vtable hierarchy.
4371 Reconstruct it for later use during GC. */
4372 case R_PPC_GNU_VTINHERIT:
4373 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4374 return FALSE;
4375 break;
252b5132 4376
25dbc73a
AM
4377 /* This relocation describes which C++ vtable entries are actually
4378 used. Record for later use during GC. */
4379 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
4380 BFD_ASSERT (h != NULL);
4381 if (h != NULL
4382 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
4383 return FALSE;
4384 break;
252b5132 4385
7c8bbca5 4386 /* We shouldn't really be seeing TPREL32. */
25dbc73a 4387 case R_PPC_TPREL32:
1d483afe
AM
4388 case R_PPC_TPREL16:
4389 case R_PPC_TPREL16_LO:
4390 case R_PPC_TPREL16_HI:
4391 case R_PPC_TPREL16_HA:
7c8bbca5 4392 if (bfd_link_dll (info))
25dbc73a
AM
4393 info->flags |= DF_STATIC_TLS;
4394 goto dodyn;
252b5132 4395
25dbc73a
AM
4396 /* Nor these. */
4397 case R_PPC_DTPMOD32:
4398 case R_PPC_DTPREL32:
4399 goto dodyn;
252b5132 4400
9edfd1af
AM
4401 case R_PPC_REL32:
4402 if (h == NULL
4403 && got2 != NULL
4404 && (sec->flags & SEC_CODE) != 0
0e1862bb 4405 && bfd_link_pic (info)
4a3dc543 4406 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
4407 {
4408 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4409 the start of a function, which assembles to a REL32
4410 reference to .got2. If we detect one of these, then
4411 force the old PLT layout because the linker cannot
4412 reliably deduce the GOT pointer value needed for
4413 PLT call stubs. */
4414 asection *s;
87d72d41 4415 Elf_Internal_Sym *isym;
9edfd1af 4416
87d72d41
AM
4417 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4418 abfd, r_symndx);
4419 if (isym == NULL)
4420 return FALSE;
4421
4422 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
9edfd1af 4423 if (s == got2)
016687f8
AM
4424 {
4425 htab->plt_type = PLT_OLD;
4426 htab->old_bfd = abfd;
4427 }
9edfd1af 4428 }
7123df0e 4429 if (h == NULL || h == htab->elf.hgot)
fd38b44c 4430 break;
625af618
AM
4431 /* fall through */
4432
4433 case R_PPC_ADDR32:
4434 case R_PPC_ADDR16:
4435 case R_PPC_ADDR16_LO:
4436 case R_PPC_ADDR16_HI:
4437 case R_PPC_ADDR16_HA:
4438 case R_PPC_UADDR32:
4439 case R_PPC_UADDR16:
0e1862bb 4440 if (h != NULL && !bfd_link_pic (info))
625af618
AM
4441 {
4442 /* We may need a plt entry if the symbol turns out to be
4443 a function defined in a dynamic object. */
3ec01793 4444 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
625af618
AM
4445 return FALSE;
4446
4447 /* We may need a copy reloc too. */
4448 h->non_got_ref = 1;
4449 h->pointer_equality_needed = 1;
d3e454b9
AM
4450 if (r_type == R_PPC_ADDR16_HA)
4451 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4452 if (r_type == R_PPC_ADDR16_LO)
4453 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
625af618
AM
4454 }
4455 goto dodyn;
9edfd1af 4456
25dbc73a
AM
4457 case R_PPC_REL24:
4458 case R_PPC_REL14:
4459 case R_PPC_REL14_BRTAKEN:
4460 case R_PPC_REL14_BRNTAKEN:
d7128ce4 4461 if (h == NULL)
25dbc73a 4462 break;
7123df0e 4463 if (h == htab->elf.hgot)
d7128ce4 4464 {
7123df0e 4465 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4466 {
4467 htab->plt_type = PLT_OLD;
4468 htab->old_bfd = abfd;
4469 }
d7128ce4
AM
4470 break;
4471 }
25dbc73a 4472 /* fall through */
ee05f2fe 4473
25dbc73a 4474 case R_PPC_ADDR24:
25dbc73a
AM
4475 case R_PPC_ADDR14:
4476 case R_PPC_ADDR14_BRTAKEN:
4477 case R_PPC_ADDR14_BRNTAKEN:
0e1862bb 4478 if (h != NULL && !bfd_link_pic (info))
25dbc73a
AM
4479 {
4480 /* We may need a plt entry if the symbol turns out to be
4481 a function defined in a dynamic object. */
e054468f 4482 h->needs_plt = 1;
de972ffa 4483 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
a6aa5195 4484 return FALSE;
625af618 4485 break;
25dbc73a 4486 }
7619e7c7 4487
25dbc73a
AM
4488 dodyn:
4489 /* If we are creating a shared library, and this is a reloc
4490 against a global symbol, or a non PC relative reloc
4491 against a local symbol, then we need to copy the reloc
4492 into the shared library. However, if we are linking with
4493 -Bsymbolic, we do not need to copy a reloc against a
4494 global symbol which is defined in an object we are
4495 including in the link (i.e., DEF_REGULAR is set). At
4496 this point we have not seen all the input files, so it is
4497 possible that DEF_REGULAR is not set now but will be set
4498 later (it is never cleared). In case of a weak definition,
4499 DEF_REGULAR may be cleared later by a strong definition in
4500 a shared library. We account for that possibility below by
4501 storing information in the dyn_relocs field of the hash
4502 table entry. A similar situation occurs when creating
4503 shared libraries and symbol visibility changes render the
4504 symbol local.
7619e7c7 4505
25dbc73a
AM
4506 If on the other hand, we are creating an executable, we
4507 may need to keep relocations for symbols satisfied by a
4508 dynamic library if we manage to avoid copy relocs for the
4509 symbol. */
0e1862bb 4510 if ((bfd_link_pic (info)
1d483afe 4511 && (must_be_dyn_reloc (info, r_type)
25dbc73a 4512 || (h != NULL
198f1157 4513 && (!SYMBOLIC_BIND (info, h)
25dbc73a
AM
4514 || h->root.type == bfd_link_hash_defweak
4515 || !h->def_regular))))
4516 || (ELIMINATE_COPY_RELOCS
0e1862bb 4517 && !bfd_link_pic (info)
25dbc73a
AM
4518 && h != NULL
4519 && (h->root.type == bfd_link_hash_defweak
de972ffa 4520 || !h->def_regular)))
25dbc73a 4521 {
25dbc73a
AM
4522#ifdef DEBUG
4523 fprintf (stderr,
4524 "ppc_elf_check_relocs needs to "
4525 "create relocation for %s\n",
4526 (h && h->root.root.string
4527 ? h->root.root.string : "<unknown>"));
4528#endif
4529 if (sreloc == NULL)
4530 {
c9a2f333
AM
4531 if (htab->elf.dynobj == NULL)
4532 htab->elf.dynobj = abfd;
83bac4b0
NC
4533
4534 sreloc = _bfd_elf_make_dynamic_reloc_section
4535 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4536
25dbc73a 4537 if (sreloc == NULL)
83bac4b0 4538 return FALSE;
25dbc73a 4539 }
7619e7c7 4540
25dbc73a
AM
4541 /* If this is a global symbol, we count the number of
4542 relocations we need for this symbol. */
4543 if (h != NULL)
4544 {
f95f8542
AM
4545 struct elf_dyn_relocs *p;
4546 struct elf_dyn_relocs **rel_head;
4547
91d6fa6a 4548 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
f95f8542
AM
4549 p = *rel_head;
4550 if (p == NULL || p->sec != sec)
4551 {
4552 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4553 if (p == NULL)
4554 return FALSE;
4555 p->next = *rel_head;
4556 *rel_head = p;
4557 p->sec = sec;
4558 p->count = 0;
4559 p->pc_count = 0;
4560 }
4561 p->count += 1;
4562 if (!must_be_dyn_reloc (info, r_type))
4563 p->pc_count += 1;
25dbc73a
AM
4564 }
4565 else
4566 {
4567 /* Track dynamic relocs needed for local syms too.
4568 We really need local syms available to do this
4569 easily. Oh well. */
f95f8542
AM
4570 struct ppc_dyn_relocs *p;
4571 struct ppc_dyn_relocs **rel_head;
4572 bfd_boolean is_ifunc;
25dbc73a 4573 asection *s;
6edfbbad 4574 void *vpp;
87d72d41 4575 Elf_Internal_Sym *isym;
6edfbbad 4576
87d72d41
AM
4577 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4578 abfd, r_symndx);
4579 if (isym == NULL)
25dbc73a 4580 return FALSE;
7fce784e 4581
87d72d41
AM
4582 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4583 if (s == NULL)
4584 s = sec;
4585
6edfbbad 4586 vpp = &elf_section_data (s)->local_dynrel;
f95f8542
AM
4587 rel_head = (struct ppc_dyn_relocs **) vpp;
4588 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4589 p = *rel_head;
4590 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4591 p = p->next;
4592 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4593 {
4594 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4595 if (p == NULL)
4596 return FALSE;
4597 p->next = *rel_head;
4598 *rel_head = p;
4599 p->sec = sec;
4600 p->ifunc = is_ifunc;
4601 p->count = 0;
4602 }
4603 p->count += 1;
25dbc73a 4604 }
7619e7c7 4605 }
25dbc73a
AM
4606
4607 break;
7619e7c7
AM
4608 }
4609 }
ee05f2fe 4610
25dbc73a
AM
4611 return TRUE;
4612}
4613\f
005d79fd
AM
4614/* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4615 and OBFD, and merge non-conflicting ones. */
4616void
50e03d47 4617_bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
34c8bcba 4618{
50e03d47 4619 bfd *obfd = info->output_bfd;
c6e65352
DJ
4620 obj_attribute *in_attr, *in_attrs;
4621 obj_attribute *out_attr, *out_attrs;
34c8bcba 4622
c6e65352
DJ
4623 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4624 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4625
c6e65352
DJ
4626 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4627 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
005d79fd 4628
c6e65352 4629 if (in_attr->i != out_attr->i)
34c8bcba 4630 {
005d79fd
AM
4631 int in_fp = in_attr->i & 3;
4632 int out_fp = out_attr->i & 3;
4633
4634 if (in_fp == 0)
34c8bcba 4635 ;
005d79fd
AM
4636 else if (out_fp == 0)
4637 {
4638 out_attr->type = 1;
4639 out_attr->i ^= in_fp;
4640 }
4641 else if (out_fp != 2 && in_fp == 2)
34c8bcba 4642 _bfd_error_handler
695344c0 4643 /* xgettext:c-format */
cf97bcb0 4644 (_("warning: %pB uses hard float, %pB uses soft float"), obfd, ibfd);
005d79fd
AM
4645 else if (out_fp == 2 && in_fp != 2)
4646 _bfd_error_handler
695344c0 4647 /* xgettext:c-format */
cf97bcb0 4648 (_("warning: %pB uses hard float, %pB uses soft float"), ibfd, obfd);
005d79fd 4649 else if (out_fp == 1 && in_fp == 3)
3c7b9897 4650 _bfd_error_handler
695344c0 4651 /* xgettext:c-format */
cf97bcb0 4652 (_("warning: %pB uses double-precision hard float, "
871b3ab2 4653 "%pB uses single-precision hard float"), obfd, ibfd);
005d79fd 4654 else if (out_fp == 3 && in_fp == 1)
3c7b9897 4655 _bfd_error_handler
695344c0 4656 /* xgettext:c-format */
cf97bcb0 4657 (_("warning: %pB uses double-precision hard float, "
871b3ab2 4658 "%pB uses single-precision hard float"), ibfd, obfd);
005d79fd
AM
4659
4660 in_fp = in_attr->i & 0xc;
4661 out_fp = out_attr->i & 0xc;
4662 if (in_fp == 0)
4663 ;
4664 else if (out_fp == 0)
4665 {
4666 out_attr->type = 1;
4667 out_attr->i ^= in_fp;
4668 }
4669 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
3c7b9897 4670 _bfd_error_handler
695344c0 4671 /* xgettext:c-format */
cf97bcb0 4672 (_("warning: %pB uses 64-bit long double, "
871b3ab2 4673 "%pB uses 128-bit long double"), ibfd, obfd);
005d79fd 4674 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
34c8bcba 4675 _bfd_error_handler
695344c0 4676 /* xgettext:c-format */
cf97bcb0 4677 (_("warning: %pB uses 64-bit long double, "
871b3ab2 4678 "%pB uses 128-bit long double"), obfd, ibfd);
005d79fd 4679 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
34c8bcba 4680 _bfd_error_handler
695344c0 4681 /* xgettext:c-format */
cf97bcb0 4682 (_("warning: %pB uses IBM long double, "
871b3ab2 4683 "%pB uses IEEE long double"), ibfd, obfd);
005d79fd 4684 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
34c8bcba 4685 _bfd_error_handler
695344c0 4686 /* xgettext:c-format */
cf97bcb0 4687 (_("warning: %pB uses IBM long double, "
871b3ab2 4688 "%pB uses IEEE long double"), obfd, ibfd);
c6e65352 4689 }
005d79fd
AM
4690}
4691
4692/* Merge object attributes from IBFD into OBFD. Warn if
4693 there are conflicting attributes. */
4694static bfd_boolean
50e03d47 4695ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
005d79fd 4696{
50e03d47 4697 bfd *obfd;
005d79fd
AM
4698 obj_attribute *in_attr, *in_attrs;
4699 obj_attribute *out_attr, *out_attrs;
4700
50e03d47 4701 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
005d79fd 4702
50e03d47 4703 obfd = info->output_bfd;
005d79fd
AM
4704 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4705 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
c6e65352
DJ
4706
4707 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4708 merge non-conflicting ones. */
4709 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4710 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4711 if (in_attr->i != out_attr->i)
4712 {
005d79fd
AM
4713 int in_vec = in_attr->i & 3;
4714 int out_vec = out_attr->i & 3;
c6e65352 4715
005d79fd
AM
4716 if (in_vec == 0)
4717 ;
4718 else if (out_vec == 0)
c6e65352 4719 {
005d79fd
AM
4720 out_attr->type = 1;
4721 out_attr->i = in_vec;
c6e65352 4722 }
c6e65352
DJ
4723 /* For now, allow generic to transition to AltiVec or SPE
4724 without a warning. If GCC marked files with their stack
4725 alignment and used don't-care markings for files which are
4726 not affected by the vector ABI, we could warn about this
4727 case too. */
005d79fd 4728 else if (in_vec == 1)
c6e65352 4729 ;
005d79fd
AM
4730 else if (out_vec == 1)
4731 {
4732 out_attr->type = 1;
4733 out_attr->i = in_vec;
4734 }
4735 else if (out_vec < in_vec)
c6e65352 4736 _bfd_error_handler
695344c0 4737 /* xgettext:c-format */
cf97bcb0 4738 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
005d79fd
AM
4739 obfd, ibfd);
4740 else if (out_vec > in_vec)
c6e65352 4741 _bfd_error_handler
695344c0 4742 /* xgettext:c-format */
cf97bcb0 4743 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
005d79fd 4744 ibfd, obfd);
34c8bcba
JM
4745 }
4746
f82e0623
NF
4747 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4748 and merge non-conflicting ones. */
4749 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4750 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4751 if (in_attr->i != out_attr->i)
4752 {
005d79fd
AM
4753 int in_struct = in_attr->i & 3;
4754 int out_struct = out_attr->i & 3;
4755
4756 if (in_struct == 0 || in_struct == 3)
f82e0623 4757 ;
005d79fd
AM
4758 else if (out_struct == 0)
4759 {
4760 out_attr->type = 1;
4761 out_attr->i = in_struct;
4762 }
4763 else if (out_struct < in_struct)
4764 _bfd_error_handler
695344c0 4765 /* xgettext:c-format */
cf97bcb0 4766 (_("warning: %pB uses r3/r4 for small structure returns, "
871b3ab2 4767 "%pB uses memory"), obfd, ibfd);
005d79fd
AM
4768 else if (out_struct > in_struct)
4769 _bfd_error_handler
695344c0 4770 /* xgettext:c-format */
cf97bcb0 4771 (_("warning: %pB uses r3/r4 for small structure returns, "
871b3ab2 4772 "%pB uses memory"), ibfd, obfd);
f82e0623
NF
4773 }
4774
34c8bcba 4775 /* Merge Tag_compatibility attributes and any common GNU ones. */
50e03d47 4776 _bfd_elf_merge_object_attributes (ibfd, info);
34c8bcba
JM
4777
4778 return TRUE;
4779}
4780
8853c3d3
AM
4781/* Merge backend specific data from an object file to the output
4782 object file when linking. */
4783
4784static bfd_boolean
50e03d47 4785ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
8853c3d3 4786{
50e03d47 4787 bfd *obfd = info->output_bfd;
8853c3d3
AM
4788 flagword old_flags;
4789 flagword new_flags;
4790 bfd_boolean error;
4791
0c8d6e5c 4792 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4793 return TRUE;
4794
cc643b88 4795 /* Check if we have the same endianness. */
50e03d47 4796 if (! _bfd_generic_verify_endian_match (ibfd, info))
8853c3d3
AM
4797 return FALSE;
4798
50e03d47 4799 if (!ppc_elf_merge_obj_attributes (ibfd, info))
34c8bcba
JM
4800 return FALSE;
4801
8853c3d3
AM
4802 new_flags = elf_elfheader (ibfd)->e_flags;
4803 old_flags = elf_elfheader (obfd)->e_flags;
4804 if (!elf_flags_init (obfd))
4805 {
4806 /* First call, no flags set. */
4807 elf_flags_init (obfd) = TRUE;
4808 elf_elfheader (obfd)->e_flags = new_flags;
4809 }
4810
4811 /* Compatible flags are ok. */
4812 else if (new_flags == old_flags)
4813 ;
4814
4815 /* Incompatible flags. */
4816 else
4817 {
4818 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4819 to be linked with either. */
4820 error = FALSE;
4821 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4822 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4823 {
4824 error = TRUE;
4eca0228 4825 _bfd_error_handler
871b3ab2 4826 (_("%pB: compiled with -mrelocatable and linked with "
8853c3d3
AM
4827 "modules compiled normally"), ibfd);
4828 }
4829 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4830 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4831 {
4832 error = TRUE;
4eca0228 4833 _bfd_error_handler
871b3ab2 4834 (_("%pB: compiled normally and linked with "
8853c3d3
AM
4835 "modules compiled with -mrelocatable"), ibfd);
4836 }
4837
4838 /* The output is -mrelocatable-lib iff both the input files are. */
4839 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4840 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4841
4842 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4843 but each input file is either -mrelocatable or -mrelocatable-lib. */
4844 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4845 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4846 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4847 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4848
4849 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4850 any module uses it. */
4851 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4852
4853 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4854 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4855
4856 /* Warn about any other mismatches. */
4857 if (new_flags != old_flags)
4858 {
4859 error = TRUE;
4eca0228 4860 _bfd_error_handler
695344c0 4861 /* xgettext:c-format */
871b3ab2 4862 (_("%pB: uses different e_flags (%#x) fields "
cd9af601
AM
4863 "than previous modules (%#x)"),
4864 ibfd, new_flags, old_flags);
8853c3d3
AM
4865 }
4866
4867 if (error)
4868 {
4869 bfd_set_error (bfd_error_bad_value);
4870 return FALSE;
4871 }
4872 }
4873
4874 return TRUE;
4875}
b9c361e0
JL
4876
4877static void
95f0d0d2 4878ppc_elf_vle_split16 (bfd *input_bfd,
08dc996f
AM
4879 asection *input_section,
4880 unsigned long offset,
95f0d0d2 4881 bfd_byte *loc,
86c95733 4882 bfd_vma value,
08dc996f
AM
4883 split16_format_type split16_format,
4884 bfd_boolean fixup)
b9c361e0 4885{
08dc996f 4886 unsigned int insn, opcode, top5;
b9c361e0 4887
95f0d0d2 4888 insn = bfd_get_32 (input_bfd, loc);
673cff9b 4889 opcode = insn & 0xfc00f800;
08dc996f
AM
4890 if (opcode == E_OR2I_INSN
4891 || opcode == E_AND2I_DOT_INSN
4892 || opcode == E_OR2IS_INSN
4893 || opcode == E_LIS_INSN
4894 || opcode == E_AND2IS_DOT_INSN)
4895 {
4896 if (split16_format != split16a_type)
4897 {
4898 if (fixup)
4899 split16_format = split16a_type;
4900 else
4901 _bfd_error_handler
4902 /* xgettext:c-format */
871b3ab2 4903 (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
08dc996f
AM
4904 input_bfd, input_section, offset, opcode);
4905 }
4906 }
4907 else if (opcode == E_ADD2I_DOT_INSN
4908 || opcode == E_ADD2IS_INSN
4909 || opcode == E_CMP16I_INSN
4910 || opcode == E_MULL2I_INSN
4911 || opcode == E_CMPL16I_INSN
4912 || opcode == E_CMPH16I_INSN
4913 || opcode == E_CMPHL16I_INSN)
4914 {
4915 if (split16_format != split16d_type)
4916 {
4917 if (fixup)
4918 split16_format = split16d_type;
4919 else
4920 _bfd_error_handler
4921 /* xgettext:c-format */
871b3ab2 4922 (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
08dc996f
AM
4923 input_bfd, input_section, offset, opcode);
4924 }
4925 }
86c95733 4926 top5 = value & 0xf800;
5499c7c7
AM
4927 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4928 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
b9c361e0 4929 insn |= top5;
86c95733 4930 insn |= value & 0x7ff;
95f0d0d2 4931 bfd_put_32 (input_bfd, insn, loc);
b9c361e0 4932}
83eef883
AFB
4933
4934static void
4935ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
4936{
4937 unsigned int insn;
4938
4939 insn = bfd_get_32 (output_bfd, loc);
4940 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4941 /* Top 4 bits of value to 17..20. */
4942 insn |= (value & 0xf0000) >> 5;
4943 /* Next 5 bits of the value to 11..15. */
4944 insn |= (value & 0xf800) << 5;
4945 /* And the final 11 bits of the value to bits 21 to 31. */
4946 insn |= value & 0x7ff;
4947 bfd_put_32 (output_bfd, insn, loc);
4948}
4949
8853c3d3 4950\f
d7128ce4
AM
4951/* Choose which PLT scheme to use, and set .plt flags appropriately.
4952 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4953int
4954ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
5446cbdf 4955 struct bfd_link_info *info)
d7128ce4
AM
4956{
4957 struct ppc_elf_link_hash_table *htab;
9d8504b1 4958 flagword flags;
d7128ce4
AM
4959
4960 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4961
4962 if (htab->plt_type == PLT_UNSET)
016687f8 4963 {
b3874e1a
AM
4964 struct elf_link_hash_entry *h;
4965
5446cbdf 4966 if (htab->params->plt_style == PLT_OLD)
016687f8 4967 htab->plt_type = PLT_OLD;
0e1862bb 4968 else if (bfd_link_pic (info)
b3874e1a
AM
4969 && htab->elf.dynamic_sections_created
4970 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4971 FALSE, FALSE, TRUE)) != NULL
4972 && (h->type == STT_FUNC
4973 || h->needs_plt)
4974 && h->ref_regular
4975 && !(SYMBOL_CALLS_LOCAL (info, h)
21d68fcd 4976 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
b3874e1a
AM
4977 {
4978 /* Profiling of shared libs (and pies) is not supported with
4979 secure plt, because ppc32 does profiling before a
4980 function prologue and a secure plt pic call stubs needs
4981 r30 to be set up. */
4982 htab->plt_type = PLT_OLD;
4983 }
016687f8
AM
4984 else
4985 {
4986 bfd *ibfd;
5446cbdf 4987 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
016687f8
AM
4988
4989 /* Look through the reloc flags left by ppc_elf_check_relocs.
4990 Use the old style bss plt if a file makes plt calls
4991 without using the new relocs, and if ld isn't given
4992 --secure-plt and we never see REL16 relocs. */
4993 if (plt_type == PLT_UNSET)
4994 plt_type = PLT_OLD;
c72f2fb2 4995 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
0c8d6e5c 4996 if (is_ppc_elf (ibfd))
016687f8
AM
4997 {
4998 if (ppc_elf_tdata (ibfd)->has_rel16)
4999 plt_type = PLT_NEW;
5000 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5001 {
5002 plt_type = PLT_OLD;
5003 htab->old_bfd = ibfd;
5004 break;
5005 }
5006 }
5007 htab->plt_type = plt_type;
5008 }
5009 }
5446cbdf 5010 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
b3874e1a
AM
5011 {
5012 if (htab->old_bfd != NULL)
cf97bcb0 5013 _bfd_error_handler (_("bss-plt forced due to %pB"), htab->old_bfd);
b3874e1a 5014 else
cf97bcb0 5015 _bfd_error_handler (_("bss-plt forced by profiling"));
b3874e1a 5016 }
d7128ce4 5017
4a3dc543 5018 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 5019
4a3dc543 5020 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
5021 {
5022 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5023 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
5024
5025 /* The new PLT is a loaded section. */
ce558b89
AM
5026 if (htab->elf.splt != NULL
5027 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
86b9da88
AM
5028 return -1;
5029
5030 /* The new GOT is not executable. */
ce558b89
AM
5031 if (htab->elf.sgot != NULL
5032 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
86b9da88 5033 return -1;
d7128ce4
AM
5034 }
5035 else
5036 {
5037 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
5038 if (htab->glink != NULL
5039 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5040 return -1;
d7128ce4 5041 }
4a3dc543 5042 return htab->plt_type == PLT_NEW;
d7128ce4
AM
5043}
5044\f
25dbc73a
AM
5045/* Return the section that should be marked against GC for a given
5046 relocation. */
586119b3 5047
25dbc73a
AM
5048static asection *
5049ppc_elf_gc_mark_hook (asection *sec,
07adf181 5050 struct bfd_link_info *info,
25dbc73a
AM
5051 Elf_Internal_Rela *rel,
5052 struct elf_link_hash_entry *h,
5053 Elf_Internal_Sym *sym)
5054{
5055 if (h != NULL)
07adf181
AM
5056 switch (ELF32_R_TYPE (rel->r_info))
5057 {
5058 case R_PPC_GNU_VTINHERIT:
5059 case R_PPC_GNU_VTENTRY:
5060 return NULL;
5061 }
5062
5063 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 5064}
25dbc73a 5065\f
3a71aa26
AM
5066/* Set plt output section type, htab->tls_get_addr, and call the
5067 generic ELF tls_setup function. */
7fce784e 5068
25dbc73a 5069asection *
5446cbdf 5070ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 5071{
25dbc73a 5072 struct ppc_elf_link_hash_table *htab;
7fce784e 5073
25dbc73a 5074 htab = ppc_elf_hash_table (info);
a7f2871e
AM
5075 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5076 FALSE, FALSE, TRUE);
f01f1741
AM
5077 if (htab->plt_type != PLT_NEW)
5078 htab->params->no_tls_get_addr_opt = TRUE;
5079
5446cbdf 5080 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM
5081 {
5082 struct elf_link_hash_entry *opt, *tga;
5083 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5084 FALSE, FALSE, TRUE);
5085 if (opt != NULL
5086 && (opt->root.type == bfd_link_hash_defined
5087 || opt->root.type == bfd_link_hash_defweak))
5088 {
5089 /* If glibc supports an optimized __tls_get_addr call stub,
5090 signalled by the presence of __tls_get_addr_opt, and we'll
5091 be calling __tls_get_addr via a plt call stub, then
5092 make __tls_get_addr point to __tls_get_addr_opt. */
5093 tga = htab->tls_get_addr;
5094 if (htab->elf.dynamic_sections_created
5095 && tga != NULL
5096 && (tga->type == STT_FUNC
5097 || tga->needs_plt)
5098 && !(SYMBOL_CALLS_LOCAL (info, tga)
21d68fcd 5099 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
a7f2871e
AM
5100 {
5101 struct plt_entry *ent;
32af9f6e
AM
5102 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5103 if (ent->plt.refcount > 0)
5104 break;
5105 if (ent != NULL)
a7f2871e
AM
5106 {
5107 tga->root.type = bfd_link_hash_indirect;
5108 tga->root.u.i.link = &opt->root;
5109 ppc_elf_copy_indirect_symbol (info, opt, tga);
b531344c 5110 opt->mark = 1;
a7f2871e
AM
5111 if (opt->dynindx != -1)
5112 {
5113 /* Use __tls_get_addr_opt in dynamic relocations. */
5114 opt->dynindx = -1;
5115 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5116 opt->dynstr_index);
5117 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5118 return FALSE;
5119 }
5120 htab->tls_get_addr = opt;
5121 }
5122 }
5123 }
5124 else
5446cbdf 5125 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 5126 }
4a3dc543 5127 if (htab->plt_type == PLT_NEW
ce558b89
AM
5128 && htab->elf.splt != NULL
5129 && htab->elf.splt->output_section != NULL)
d7128ce4 5130 {
ce558b89
AM
5131 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5132 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
d7128ce4
AM
5133 }
5134
25dbc73a 5135 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
5136}
5137
3a71aa26
AM
5138/* Return TRUE iff REL is a branch reloc with a global symbol matching
5139 HASH. */
5140
5141static bfd_boolean
5142branch_reloc_hash_match (const bfd *ibfd,
5143 const Elf_Internal_Rela *rel,
5144 const struct elf_link_hash_entry *hash)
5145{
5146 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5147 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5148 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5149
e054468f 5150 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
3a71aa26
AM
5151 {
5152 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5153 struct elf_link_hash_entry *h;
5154
5155 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5156 while (h->root.type == bfd_link_hash_indirect
5157 || h->root.type == bfd_link_hash_warning)
5158 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5159 if (h == hash)
5160 return TRUE;
5161 }
5162 return FALSE;
5163}
5164
25dbc73a
AM
5165/* Run through all the TLS relocs looking for optimization
5166 opportunities. */
252b5132 5167
25dbc73a
AM
5168bfd_boolean
5169ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5170 struct bfd_link_info *info)
252b5132 5171{
7fce784e 5172 bfd *ibfd;
25dbc73a
AM
5173 asection *sec;
5174 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 5175 int pass;
252b5132 5176
3cbc1e5e 5177 if (!bfd_link_executable (info))
25dbc73a 5178 return TRUE;
252b5132 5179
7619e7c7 5180 htab = ppc_elf_hash_table (info);
663a1470
AM
5181 if (htab == NULL)
5182 return FALSE;
5183
b7fcf6f6
AM
5184 /* Make two passes through the relocs. First time check that tls
5185 relocs involved in setting up a tls_get_addr call are indeed
663a1470
AM
5186 followed by such a call. If they are not, don't do any tls
5187 optimization. On the second pass twiddle tls_mask flags to
5188 notify relocate_section that optimization can be done, and
5189 adjust got and plt refcounts. */
b7fcf6f6 5190 for (pass = 0; pass < 2; ++pass)
c72f2fb2 5191 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
b7fcf6f6
AM
5192 {
5193 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 5194 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
32af9f6e 5195 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
7619e7c7 5196
b7fcf6f6
AM
5197 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5198 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5199 {
5200 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 5201 int expecting_tls_get_addr = 0;
252b5132 5202
b7fcf6f6
AM
5203 /* Read the relocations. */
5204 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5205 info->keep_memory);
5206 if (relstart == NULL)
5207 return FALSE;
7619e7c7 5208
b7fcf6f6
AM
5209 relend = relstart + sec->reloc_count;
5210 for (rel = relstart; rel < relend; rel++)
5211 {
5212 enum elf_ppc_reloc_type r_type;
5213 unsigned long r_symndx;
5214 struct elf_link_hash_entry *h = NULL;
bac3c8c5 5215 unsigned char *tls_mask;
b7fcf6f6
AM
5216 char tls_set, tls_clear;
5217 bfd_boolean is_local;
b7fcf6f6
AM
5218 bfd_signed_vma *got_count;
5219
5220 r_symndx = ELF32_R_SYM (rel->r_info);
5221 if (r_symndx >= symtab_hdr->sh_info)
5222 {
5223 struct elf_link_hash_entry **sym_hashes;
7fce784e 5224
b7fcf6f6
AM
5225 sym_hashes = elf_sym_hashes (ibfd);
5226 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5227 while (h->root.type == bfd_link_hash_indirect
5228 || h->root.type == bfd_link_hash_warning)
5229 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5230 }
7619e7c7 5231
b7fcf6f6
AM
5232 is_local = FALSE;
5233 if (h == NULL
5234 || !h->def_dynamic)
5235 is_local = TRUE;
7619e7c7 5236
b7fcf6f6 5237 r_type = ELF32_R_TYPE (rel->r_info);
663a1470
AM
5238 /* If this section has old-style __tls_get_addr calls
5239 without marker relocs, then check that each
5240 __tls_get_addr call reloc is preceded by a reloc
5241 that conceivably belongs to the __tls_get_addr arg
5242 setup insn. If we don't find matching arg setup
5243 relocs, don't do any tls optimization. */
5244 if (pass == 0
5245 && sec->has_tls_get_addr_call
5246 && h != NULL
5247 && h == htab->tls_get_addr
5248 && !expecting_tls_get_addr
5249 && is_branch_reloc (r_type))
5250 {
25f53a85 5251 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
663a1470
AM
5252 "TLS optimization disabled\n",
5253 ibfd, sec, rel->r_offset);
5254 if (elf_section_data (sec)->relocs != relstart)
5255 free (relstart);
5256 return TRUE;
5257 }
5258
5259 expecting_tls_get_addr = 0;
b7fcf6f6
AM
5260 switch (r_type)
5261 {
5262 case R_PPC_GOT_TLSLD16:
5263 case R_PPC_GOT_TLSLD16_LO:
5264 expecting_tls_get_addr = 1;
1a0670f3 5265 /* Fall through. */
b7fcf6f6
AM
5266
5267 case R_PPC_GOT_TLSLD16_HI:
5268 case R_PPC_GOT_TLSLD16_HA:
5269 /* These relocs should never be against a symbol
5270 defined in a shared lib. Leave them alone if
5271 that turns out to be the case. */
5272 if (!is_local)
5273 continue;
5274
5275 /* LD -> LE */
5276 tls_set = 0;
5277 tls_clear = TLS_LD;
5278 break;
5279
5280 case R_PPC_GOT_TLSGD16:
5281 case R_PPC_GOT_TLSGD16_LO:
5282 expecting_tls_get_addr = 1;
1a0670f3 5283 /* Fall through. */
b7fcf6f6
AM
5284
5285 case R_PPC_GOT_TLSGD16_HI:
5286 case R_PPC_GOT_TLSGD16_HA:
5287 if (is_local)
5288 /* GD -> LE */
5289 tls_set = 0;
5290 else
5291 /* GD -> IE */
5292 tls_set = TLS_TLS | TLS_TPRELGD;
5293 tls_clear = TLS_GD;
5294 break;
5295
5296 case R_PPC_GOT_TPREL16:
5297 case R_PPC_GOT_TPREL16_LO:
5298 case R_PPC_GOT_TPREL16_HI:
5299 case R_PPC_GOT_TPREL16_HA:
5300 if (is_local)
5301 {
5302 /* IE -> LE */
5303 tls_set = 0;
5304 tls_clear = TLS_TPREL;
5305 break;
5306 }
5307 else
5308 continue;
5309
32af9f6e
AM
5310 case R_PPC_TLSGD:
5311 case R_PPC_TLSLD:
5312 expecting_tls_get_addr = 2;
5313 tls_set = 0;
5314 tls_clear = 0;
5315 break;
5316
b7fcf6f6 5317 default:
25dbc73a 5318 continue;
b7fcf6f6 5319 }
25dbc73a 5320
b7fcf6f6
AM
5321 if (pass == 0)
5322 {
727fc41e 5323 if (!expecting_tls_get_addr
32af9f6e
AM
5324 || (expecting_tls_get_addr == 1
5325 && !sec->has_tls_get_addr_call))
b7fcf6f6 5326 continue;
25dbc73a 5327
3a71aa26
AM
5328 if (rel + 1 < relend
5329 && branch_reloc_hash_match (ibfd, rel + 1,
5330 htab->tls_get_addr))
5331 continue;
25dbc73a 5332
b7fcf6f6
AM
5333 /* Uh oh, we didn't find the expected call. We
5334 could just mark this symbol to exclude it
5335 from tls optimization but it's safer to skip
663a1470 5336 the entire optimization. */
25f53a85 5337 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM
5338 "TLS optimization disabled\n"),
5339 ibfd, sec, rel->r_offset);
5340 if (elf_section_data (sec)->relocs != relstart)
5341 free (relstart);
5342 return TRUE;
b7fcf6f6 5343 }
25dbc73a 5344
32af9f6e
AM
5345 if (expecting_tls_get_addr)
5346 {
5347 struct plt_entry *ent;
5348 bfd_vma addend = 0;
5349
0e1862bb 5350 if (bfd_link_pic (info)
32af9f6e
AM
5351 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5352 addend = rel[1].r_addend;
5353 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5354 got2, addend);
5355 if (ent != NULL && ent->plt.refcount > 0)
5356 ent->plt.refcount -= 1;
5357
5358 if (expecting_tls_get_addr == 2)
5359 continue;
5360 }
5361
b7fcf6f6
AM
5362 if (h != NULL)
5363 {
5364 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5365 got_count = &h->got.refcount;
5366 }
5367 else
5368 {
b7fcf6f6 5369 bfd_signed_vma *lgot_refs;
e054468f 5370 struct plt_entry **local_plt;
bac3c8c5 5371 unsigned char *lgot_masks;
25dbc73a 5372
b7fcf6f6
AM
5373 if (locsyms == NULL)
5374 {
5375 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5376 if (locsyms == NULL)
5377 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5378 symtab_hdr->sh_info,
5379 0, NULL, NULL, NULL);
5380 if (locsyms == NULL)
5381 {
5382 if (elf_section_data (sec)->relocs != relstart)
5383 free (relstart);
5384 return FALSE;
5385 }
5386 }
b7fcf6f6
AM
5387 lgot_refs = elf_local_got_refcounts (ibfd);
5388 if (lgot_refs == NULL)
5389 abort ();
e054468f
AM
5390 local_plt = (struct plt_entry **)
5391 (lgot_refs + symtab_hdr->sh_info);
bac3c8c5
AM
5392 lgot_masks = (unsigned char *)
5393 (local_plt + symtab_hdr->sh_info);
b7fcf6f6
AM
5394 tls_mask = &lgot_masks[r_symndx];
5395 got_count = &lgot_refs[r_symndx];
5396 }
25dbc73a 5397
b7fcf6f6
AM
5398 if (tls_set == 0)
5399 {
5400 /* We managed to get rid of a got entry. */
5401 if (*got_count > 0)
5402 *got_count -= 1;
5403 }
25dbc73a 5404
b7fcf6f6
AM
5405 *tls_mask |= tls_set;
5406 *tls_mask &= ~tls_clear;
5407 }
25dbc73a 5408
b7fcf6f6
AM
5409 if (elf_section_data (sec)->relocs != relstart)
5410 free (relstart);
5411 }
5412
5413 if (locsyms != NULL
5414 && (symtab_hdr->contents != (unsigned char *) locsyms))
5415 {
5416 if (!info->keep_memory)
5417 free (locsyms);
5418 else
5419 symtab_hdr->contents = (unsigned char *) locsyms;
5420 }
5421 }
9a23f96e 5422 htab->do_tls_opt = 1;
25dbc73a
AM
5423 return TRUE;
5424}
5425\f
98bbb1b8 5426/* Find dynamic relocs for H that apply to read-only sections. */
625af618 5427
98bbb1b8
AM
5428static asection *
5429readonly_dynrelocs (struct elf_link_hash_entry *h)
625af618 5430{
6061a67d 5431 struct elf_dyn_relocs *p;
625af618
AM
5432
5433 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5434 {
5435 asection *s = p->sec->output_section;
5436
98bbb1b8
AM
5437 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5438 return p->sec;
625af618 5439 }
98bbb1b8 5440 return NULL;
625af618
AM
5441}
5442
287c7eaf
AM
5443/* Return true if we have dynamic relocs against H or any of its weak
5444 aliases, that apply to read-only sections. Cannot be used after
5445 size_dynamic_sections. */
5446
5447static bfd_boolean
5448alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
5449{
5450 struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
5451 do
5452 {
5453 if (readonly_dynrelocs (&eh->elf))
5454 return TRUE;
5455 eh = ppc_elf_hash_entry (eh->elf.u.alias);
5456 } while (eh != NULL && &eh->elf != h);
5457
5458 return FALSE;
5459}
5460
5461/* Return whether H has pc-relative dynamic relocs. */
5462
5463static bfd_boolean
5464pc_dynrelocs (struct elf_link_hash_entry *h)
5465{
5466 struct elf_dyn_relocs *p;
5467
5468 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5469 if (p->pc_count != 0)
5470 return TRUE;
5471 return FALSE;
5472}
5473
25dbc73a
AM
5474/* Adjust a symbol defined by a dynamic object and referenced by a
5475 regular object. The current definition is in some section of the
5476 dynamic object, but we're not including those sections. We have to
5477 change the definition to something the rest of the link can
5478 understand. */
7fce784e 5479
25dbc73a
AM
5480static bfd_boolean
5481ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5482 struct elf_link_hash_entry *h)
5483{
5484 struct ppc_elf_link_hash_table *htab;
5485 asection *s;
7fce784e 5486
25dbc73a
AM
5487#ifdef DEBUG
5488 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5489 h->root.root.string);
5490#endif
252b5132 5491
25dbc73a
AM
5492 /* Make sure we know what is going on here. */
5493 htab = ppc_elf_hash_table (info);
5494 BFD_ASSERT (htab->elf.dynobj != NULL
5495 && (h->needs_plt
91e21fb7 5496 || h->type == STT_GNU_IFUNC
60d67dc8 5497 || h->is_weakalias
25dbc73a
AM
5498 || (h->def_dynamic
5499 && h->ref_regular
5500 && !h->def_regular)));
252b5132 5501
25dbc73a
AM
5502 /* Deal with function syms. */
5503 if (h->type == STT_FUNC
e054468f 5504 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5505 || h->needs_plt)
5506 {
529fe20e
AM
5507 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
5508 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
287c7eaf
AM
5509 /* Discard dyn_relocs when non-pic if we've decided that a
5510 function symbol is local. */
5511 if (!bfd_link_pic (info) && local)
5512 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
529fe20e 5513
25dbc73a
AM
5514 /* Clear procedure linkage table information for any symbol that
5515 won't need a .plt entry. */
a6aa5195
AM
5516 struct plt_entry *ent;
5517 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5518 if (ent->plt.refcount > 0)
5519 break;
5520 if (ent == NULL
529fe20e 5521 || (h->type != STT_GNU_IFUNC && local))
252b5132 5522 {
25dbc73a 5523 /* A PLT entry is not required/allowed when:
252b5132 5524
25dbc73a
AM
5525 1. We are not using ld.so; because then the PLT entry
5526 can't be set up, so we can't use one. In this case,
5527 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 5528
25dbc73a
AM
5529 2. GC has rendered the entry unused.
5530
5531 3. We know for certain that a call to this symbol
5532 will go to this object, or will remain undefined. */
a6aa5195 5533 h->plt.plist = NULL;
25dbc73a 5534 h->needs_plt = 0;
d1eca1e4 5535 h->pointer_equality_needed = 0;
25dbc73a 5536 }
625af618
AM
5537 else
5538 {
d1eca1e4
AM
5539 /* Taking a function's address in a read/write section
5540 doesn't require us to define the function symbol in the
1009ef28 5541 executable on a plt call stub. A dynamic reloc can
f0158f44
AM
5542 be used instead, giving better runtime performance.
5543 (Calls via that function pointer don't need to bounce
5544 through the plt call stub.) Similarly, use a dynamic
5545 reloc for a weak reference when possible, allowing the
5546 resolution of the symbol to be set at load time rather
5547 than link time. */
5548 if ((h->pointer_equality_needed
3988aed5
AM
5549 || (h->non_got_ref
5550 && !h->ref_regular_nonweak
5551 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
1009ef28
AM
5552 && !htab->is_vxworks
5553 && !ppc_elf_hash_entry (h)->has_sda_refs
98bbb1b8 5554 && !readonly_dynrelocs (h))
d1eca1e4
AM
5555 {
5556 h->pointer_equality_needed = 0;
3988aed5
AM
5557 /* If we haven't seen a branch reloc then we don't need
5558 a plt entry. */
5559 if (!h->needs_plt)
5560 h->plt.plist = NULL;
d1eca1e4 5561 }
287c7eaf 5562 else if (!bfd_link_pic (info))
529fe20e
AM
5563 /* We are going to be defining the function symbol on the
5564 plt stub, so no dyn_relocs needed when non-pic. */
287c7eaf 5565 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
625af618 5566 }
d3e454b9 5567 h->protected_def = 0;
3988aed5 5568 /* Function symbols can't have copy relocs. */
25dbc73a 5569 return TRUE;
252b5132 5570 }
25dbc73a 5571 else
a6aa5195 5572 h->plt.plist = NULL;
252b5132 5573
25dbc73a
AM
5574 /* If this is a weak symbol, and there is a real definition, the
5575 processor independent code will have arranged for us to see the
5576 real definition first, and we can just use the same value. */
60d67dc8 5577 if (h->is_weakalias)
252b5132 5578 {
60d67dc8
AM
5579 struct elf_link_hash_entry *def = weakdef (h);
5580 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
5581 h->root.u.def.section = def->root.u.def.section;
5582 h->root.u.def.value = def->root.u.def.value;
4a7e5234
AM
5583 if (def->root.u.def.section == htab->elf.sdynbss
5584 || def->root.u.def.section == htab->elf.sdynrelro
5585 || def->root.u.def.section == htab->dynsbss)
5586 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
25dbc73a
AM
5587 return TRUE;
5588 }
dc810e39 5589
25dbc73a
AM
5590 /* This is a reference to a symbol defined by a dynamic object which
5591 is not a function. */
252b5132 5592
25dbc73a
AM
5593 /* If we are creating a shared library, we must presume that the
5594 only references to the symbol are via the global offset table.
5595 For such cases we need not do anything here; the relocations will
5596 be handled correctly by relocate_section. */
0e1862bb 5597 if (bfd_link_pic (info))
d3e454b9
AM
5598 {
5599 h->protected_def = 0;
5600 return TRUE;
5601 }
252b5132 5602
25dbc73a
AM
5603 /* If there are no references to this symbol that do not use the
5604 GOT, we don't need to generate a copy reloc. */
5605 if (!h->non_got_ref)
d3e454b9
AM
5606 {
5607 h->protected_def = 0;
5608 return TRUE;
5609 }
5610
5611 /* Protected variables do not work with .dynbss. The copy in
5612 .dynbss won't be used by the shared library with the protected
5613 definition for the variable. Editing to PIC, or text relocations
5614 are preferable to an incorrect program. */
5615 if (h->protected_def)
5616 {
5617 if (ELIMINATE_COPY_RELOCS
5618 && ppc_elf_hash_entry (h)->has_addr16_ha
5619 && ppc_elf_hash_entry (h)->has_addr16_lo
5620 && htab->params->pic_fixup == 0
5621 && info->disable_target_specific_optimizations <= 1)
5622 htab->params->pic_fixup = 1;
d3e454b9
AM
5623 return TRUE;
5624 }
25dbc73a 5625
a127494f
AM
5626 /* If -z nocopyreloc was given, we won't generate them either. */
5627 if (info->nocopyreloc)
529fe20e 5628 return TRUE;
a127494f 5629
dce2246a 5630 /* If we don't find any dynamic relocs in read-only sections, then
cfd2c773
NS
5631 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5632 We can't do this if there are any small data relocations. This
5633 doesn't work on VxWorks, where we can not have dynamic
5634 relocations (other than copy and jump slot relocations) in an
5635 executable. */
4dc4a9a5 5636 if (ELIMINATE_COPY_RELOCS
cfd2c773 5637 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
5638 && !htab->is_vxworks
5639 && !h->def_regular
287c7eaf 5640 && !alias_readonly_dynrelocs (h))
529fe20e 5641 return TRUE;
252b5132 5642
25dbc73a
AM
5643 /* We must allocate the symbol in our .dynbss section, which will
5644 become part of the .bss section of the executable. There will be
5645 an entry for this symbol in the .dynsym section. The dynamic
5646 object will contain position independent code, so all references
5647 from the dynamic object to this symbol will go through the global
5648 offset table. The dynamic linker will use the .dynsym entry to
5649 determine the address it must put in the global offset table, so
5650 both the dynamic object and the regular object will refer to the
5651 same memory location for the variable.
5652
4dc4a9a5
DJ
5653 Of course, if the symbol is referenced using SDAREL relocs, we
5654 must instead allocate it in .sbss. */
4dc4a9a5 5655 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a 5656 s = htab->dynsbss;
5474d94f
AM
5657 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5658 s = htab->elf.sdynrelro;
25dbc73a 5659 else
9d19e4fd 5660 s = htab->elf.sdynbss;
25dbc73a
AM
5661 BFD_ASSERT (s != NULL);
5662
1d7e9d18 5663 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
25dbc73a
AM
5664 {
5665 asection *srel;
5666
4a7e5234
AM
5667 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5668 linker to copy the initial value out of the dynamic object
5669 and into the runtime process image. */
4dc4a9a5 5670 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a 5671 srel = htab->relsbss;
5474d94f
AM
5672 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5673 srel = htab->elf.sreldynrelro;
25dbc73a 5674 else
9d19e4fd 5675 srel = htab->elf.srelbss;
25dbc73a
AM
5676 BFD_ASSERT (srel != NULL);
5677 srel->size += sizeof (Elf32_External_Rela);
5678 h->needs_copy = 1;
5679 }
7619e7c7 5680
529fe20e 5681 /* We no longer want dyn_relocs. */
287c7eaf 5682 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
6cabe1ea 5683 return _bfd_elf_adjust_dynamic_copy (info, h, s);
25dbc73a
AM
5684}
5685\f
ac39eb42
AM
5686/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5687 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5688 specifying the addend on the plt relocation. For -fpic code, the sym
5689 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5690 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
5691
5692static bfd_boolean
5693add_stub_sym (struct plt_entry *ent,
5694 struct elf_link_hash_entry *h,
ac39eb42 5695 struct bfd_link_info *info)
0ba07910
AM
5696{
5697 struct elf_link_hash_entry *sh;
5698 size_t len1, len2, len3;
5699 char *name;
ac39eb42
AM
5700 const char *stub;
5701 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5702
0e1862bb 5703 if (bfd_link_pic (info))
ac39eb42
AM
5704 stub = ".plt_pic32.";
5705 else
5706 stub = ".plt_call32.";
0ba07910
AM
5707
5708 len1 = strlen (h->root.root.string);
ac39eb42 5709 len2 = strlen (stub);
0ba07910
AM
5710 len3 = 0;
5711 if (ent->sec)
5712 len3 = strlen (ent->sec->name);
ac39eb42 5713 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
5714 if (name == NULL)
5715 return FALSE;
5716 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5717 if (ent->sec)
5718 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
5719 memcpy (name + 8 + len3, stub, len2);
5720 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
5721 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5722 if (sh == NULL)
5723 return FALSE;
5724 if (sh->root.type == bfd_link_hash_new)
5725 {
5726 sh->root.type = bfd_link_hash_defined;
5727 sh->root.u.def.section = htab->glink;
5728 sh->root.u.def.value = ent->glink_offset;
5729 sh->ref_regular = 1;
5730 sh->def_regular = 1;
5731 sh->ref_regular_nonweak = 1;
5732 sh->forced_local = 1;
5733 sh->non_elf = 0;
2ec55de3 5734 sh->root.linker_def = 1;
0ba07910
AM
5735 }
5736 return TRUE;
5737}
5738
3b36f7e6
AM
5739/* Allocate NEED contiguous space in .got, and return the offset.
5740 Handles allocation of the got header when crossing 32k. */
5741
5742static bfd_vma
5743allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5744{
5745 bfd_vma where;
4a3dc543 5746 unsigned int max_before_header;
3b36f7e6 5747
4a3dc543 5748 if (htab->plt_type == PLT_VXWORKS)
9d8504b1 5749 {
ce558b89
AM
5750 where = htab->elf.sgot->size;
5751 htab->elf.sgot->size += need;
9d8504b1 5752 }
3b36f7e6
AM
5753 else
5754 {
4a3dc543
RS
5755 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5756 if (need <= htab->got_gap)
3b36f7e6 5757 {
4a3dc543
RS
5758 where = max_before_header - htab->got_gap;
5759 htab->got_gap -= need;
5760 }
5761 else
5762 {
ce558b89
AM
5763 if (htab->elf.sgot->size + need > max_before_header
5764 && htab->elf.sgot->size <= max_before_header)
4a3dc543 5765 {
ce558b89
AM
5766 htab->got_gap = max_before_header - htab->elf.sgot->size;
5767 htab->elf.sgot->size = max_before_header + htab->got_header_size;
4a3dc543 5768 }
ce558b89
AM
5769 where = htab->elf.sgot->size;
5770 htab->elf.sgot->size += need;
3b36f7e6 5771 }
3b36f7e6
AM
5772 }
5773 return where;
5774}
5775
f15d0b54
AM
5776/* Calculate size of GOT entries for symbol given its TLS_MASK.
5777 TLS_LD is excluded because those go in a special GOT slot. */
5778
5779static inline unsigned int
5780got_entries_needed (int tls_mask)
5781{
5782 unsigned int need;
5783 if ((tls_mask & TLS_TLS) == 0)
5784 need = 4;
5785 else
5786 {
5787 need = 0;
5788 if ((tls_mask & TLS_GD) != 0)
5789 need += 8;
5790 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5791 need += 4;
5792 if ((tls_mask & TLS_DTPREL) != 0)
5793 need += 4;
5794 }
5795 return need;
5796}
5797
5798/* Calculate size of relocs needed for symbol given its TLS_MASK and
5799 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5800 link time. */
5801
5802static inline unsigned int
5803got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
5804{
5805 /* All the entries we allocated need relocs.
5806 Except IE in executable with a local symbol. We could also omit
5807 the DTPREL reloc on the second word of a GD entry under the same
5808 condition as that for IE, but ld.so needs to differentiate
5809 LD and GD entries. */
5810 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0 && known)
5811 need -= 4;
5812 return need * sizeof (Elf32_External_Rela) / 4;
5813}
5814
46434633 5815/* If H is undefined, make it dynamic if that makes sense. */
f0158f44
AM
5816
5817static bfd_boolean
46434633
AM
5818ensure_undef_dynamic (struct bfd_link_info *info,
5819 struct elf_link_hash_entry *h)
f0158f44
AM
5820{
5821 struct elf_link_hash_table *htab = elf_hash_table (info);
5822
5823 if (htab->dynamic_sections_created
46434633
AM
5824 && ((info->dynamic_undefined_weak != 0
5825 && h->root.type == bfd_link_hash_undefweak)
5826 || h->root.type == bfd_link_hash_undefined)
f0158f44
AM
5827 && h->dynindx == -1
5828 && !h->forced_local
5829 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5830 return bfd_elf_link_record_dynamic_symbol (info, h);
5831 return TRUE;
5832}
5833
25dbc73a 5834/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 5835
b34976b6 5836static bfd_boolean
25dbc73a 5837allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 5838{
25dbc73a
AM
5839 struct bfd_link_info *info = inf;
5840 struct ppc_elf_link_hash_entry *eh;
7619e7c7 5841 struct ppc_elf_link_hash_table *htab;
6061a67d 5842 struct elf_dyn_relocs *p;
f0158f44 5843 bfd_boolean dyn;
252b5132 5844
25dbc73a 5845 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5846 return TRUE;
252b5132 5847
7619e7c7 5848 htab = ppc_elf_hash_table (info);
25dbc73a 5849 eh = (struct ppc_elf_link_hash_entry *) h;
d3e454b9
AM
5850 if (eh->elf.got.refcount > 0
5851 || (ELIMINATE_COPY_RELOCS
5852 && !eh->elf.def_regular
5853 && eh->elf.protected_def
5854 && eh->has_addr16_ha
5855 && eh->has_addr16_lo
5856 && htab->params->pic_fixup > 0))
25dbc73a 5857 {
d6e14abc
AM
5858 unsigned int need;
5859
46434633
AM
5860 /* Make sure this symbol is output as a dynamic symbol. */
5861 if (!ensure_undef_dynamic (info, &eh->elf))
f0158f44 5862 return FALSE;
252b5132 5863
d6e14abc 5864 need = 0;
f15d0b54 5865 if ((eh->tls_mask & TLS_LD) != 0)
25dbc73a 5866 {
f15d0b54
AM
5867 if (!eh->elf.def_dynamic)
5868 /* We'll just use htab->tlsld_got.offset. This should
5869 always be the case. It's a little odd if we have
5870 a local dynamic reloc against a non-local symbol. */
5871 htab->tlsld_got.refcount += 1;
5872 else
d6e14abc 5873 need += 8;
d6e14abc 5874 }
f15d0b54 5875 need += got_entries_needed (eh->tls_mask);
d6e14abc
AM
5876 if (need == 0)
5877 eh->elf.got.offset = (bfd_vma) -1;
5878 else
5879 {
3b36f7e6 5880 eh->elf.got.offset = allocate_got (htab, need);
0e1862bb 5881 if ((bfd_link_pic (info)
f0158f44
AM
5882 || (htab->elf.dynamic_sections_created
5883 && eh->elf.dynindx != -1
5884 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
21d68fcd 5885 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
252b5132 5886 {
f15d0b54
AM
5887 asection *rsec;
5888 bfd_boolean tprel_known = (bfd_link_executable (info)
5889 && SYMBOL_REFERENCES_LOCAL (info,
5890 &eh->elf));
5891
5892 need = got_relocs_needed (eh->tls_mask, need, tprel_known);
5893 if ((eh->tls_mask & TLS_LD) != 0 && eh->elf.def_dynamic)
5894 need -= sizeof (Elf32_External_Rela);
5895 rsec = htab->elf.srelgot;
0bed072f 5896 if (eh->elf.type == STT_GNU_IFUNC)
ce558b89 5897 rsec = htab->elf.irelplt;
f15d0b54 5898 rsec->size += need;
252b5132 5899 }
25dbc73a
AM
5900 }
5901 }
5902 else
5903 eh->elf.got.offset = (bfd_vma) -1;
252b5132 5904
954b63d4
AM
5905 /* If no dynamic sections we can't have dynamic relocs, except for
5906 IFUNCs which are handled even in static executables. */
f0158f44
AM
5907 if (!htab->elf.dynamic_sections_created
5908 && h->type != STT_GNU_IFUNC)
5909 eh->dyn_relocs = NULL;
5910
529fe20e
AM
5911 /* Discard relocs on undefined symbols that must be local. */
5912 else if (h->root.type == bfd_link_hash_undefined
5913 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5914 eh->dyn_relocs = NULL;
5915
5916 /* Also discard relocs on undefined weak syms with non-default
5917 visibility, or when dynamic_undefined_weak says so. */
5918 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5919 eh->dyn_relocs = NULL;
5920
f0158f44 5921 if (eh->dyn_relocs == NULL)
287c7eaf 5922 ;
252b5132 5923
25dbc73a
AM
5924 /* In the shared -Bsymbolic case, discard space allocated for
5925 dynamic pc-relative relocs against symbols which turn out to be
5926 defined in regular objects. For the normal shared case, discard
5927 space for relocs that have become local due to symbol visibility
5928 changes. */
f0158f44 5929 else if (bfd_link_pic (info))
25dbc73a
AM
5930 {
5931 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 5932 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
5933 generated via assembly. We want calls to protected symbols to
5934 resolve directly to the function rather than going via the plt.
5935 If people want function pointer comparisons to work as expected
5936 then they should avoid writing weird assembly. */
529fe20e 5937 if (SYMBOL_CALLS_LOCAL (info, h))
25dbc73a 5938 {
6061a67d 5939 struct elf_dyn_relocs **pp;
25dbc73a
AM
5940
5941 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 5942 {
25dbc73a
AM
5943 p->count -= p->pc_count;
5944 p->pc_count = 0;
5945 if (p->count == 0)
5946 *pp = p->next;
5947 else
5948 pp = &p->next;
252b5132 5949 }
25dbc73a 5950 }
252b5132 5951
3348747a
NS
5952 if (htab->is_vxworks)
5953 {
6061a67d 5954 struct elf_dyn_relocs **pp;
3348747a
NS
5955
5956 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5957 {
5958 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5959 *pp = p->next;
5960 else
5961 pp = &p->next;
5962 }
5963 }
5964
954b63d4 5965 if (eh->dyn_relocs != NULL)
25dbc73a 5966 {
46434633
AM
5967 /* Make sure this symbol is output as a dynamic symbol. */
5968 if (!ensure_undef_dynamic (info, h))
f0158f44 5969 return FALSE;
25dbc73a
AM
5970 }
5971 }
5972 else if (ELIMINATE_COPY_RELOCS)
5973 {
f0158f44 5974 /* For the non-pic case, discard space for relocs against
25dbc73a
AM
5975 symbols which turn out to need copy relocs or are not
5976 dynamic. */
529fe20e 5977 if (h->dynamic_adjusted
d3e454b9 5978 && !h->def_regular
529fe20e 5979 && !ELF_COMMON_DEF_P (h)
d3e454b9
AM
5980 && !(h->protected_def
5981 && eh->has_addr16_ha
5982 && eh->has_addr16_lo
5983 && htab->params->pic_fixup > 0))
25dbc73a 5984 {
46434633
AM
5985 /* Make sure this symbol is output as a dynamic symbol. */
5986 if (!ensure_undef_dynamic (info, h))
f0158f44 5987 return FALSE;
7619e7c7 5988
f0158f44 5989 if (h->dynindx == -1)
287c7eaf 5990 eh->dyn_relocs = NULL;
25dbc73a 5991 }
f0158f44 5992 else
287c7eaf 5993 eh->dyn_relocs = NULL;
25dbc73a 5994 }
252b5132 5995
f0158f44 5996 /* Allocate space. */
25dbc73a
AM
5997 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5998 {
5999 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6000 if (eh->elf.type == STT_GNU_IFUNC)
ce558b89 6001 sreloc = htab->elf.irelplt;
25dbc73a
AM
6002 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6003 }
252b5132 6004
f0158f44
AM
6005 /* Handle PLT relocs. Done last, after dynindx has settled. */
6006 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6007 if (dyn || h->type == STT_GNU_IFUNC)
6008 {
6009 struct plt_entry *ent;
6010 bfd_boolean doneone = FALSE;
6011 bfd_vma plt_offset = 0, glink_offset = 0;
6012
6013 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6014 if (ent->plt.refcount > 0)
6015 {
6016 asection *s = htab->elf.splt;
6017
6018 if (!dyn)
6019 s = htab->elf.iplt;
6020
6021 if (htab->plt_type == PLT_NEW || !dyn)
6022 {
6023 if (!doneone)
6024 {
6025 plt_offset = s->size;
6026 s->size += 4;
6027 }
6028 ent->plt.offset = plt_offset;
6029
6030 s = htab->glink;
6031 if (!doneone || bfd_link_pic (info))
6032 {
6033 glink_offset = s->size;
9e390558 6034 s->size += GLINK_ENTRY_SIZE (htab, h);
f0158f44
AM
6035 }
6036 if (!doneone
6037 && !bfd_link_pic (info)
6038 && h->def_dynamic
6039 && !h->def_regular)
6040 {
6041 h->root.u.def.section = s;
6042 h->root.u.def.value = glink_offset;
6043 }
6044 ent->glink_offset = glink_offset;
6045
6046 if (htab->params->emit_stub_syms
6047 && !add_stub_sym (ent, h, info))
6048 return FALSE;
6049 }
6050 else
6051 {
6052 if (!doneone)
6053 {
6054 /* If this is the first .plt entry, make room
6055 for the special first entry. */
6056 if (s->size == 0)
6057 s->size += htab->plt_initial_entry_size;
6058
6059 /* The PowerPC PLT is actually composed of two
6060 parts, the first part is 2 words (for a load
6061 and a jump), and then there is a remaining
6062 word available at the end. */
6063 plt_offset = (htab->plt_initial_entry_size
6064 + (htab->plt_slot_size
6065 * ((s->size
6066 - htab->plt_initial_entry_size)
6067 / htab->plt_entry_size)));
6068
6069 /* If this symbol is not defined in a regular
6070 file, and we are not generating a shared
6071 library, then set the symbol to this location
6072 in the .plt. This is to avoid text
6073 relocations, and is required to make
6074 function pointers compare as equal between
6075 the normal executable and the shared library. */
6076 if (! bfd_link_pic (info)
6077 && h->def_dynamic
6078 && !h->def_regular)
6079 {
6080 h->root.u.def.section = s;
6081 h->root.u.def.value = plt_offset;
6082 }
6083
6084 /* Make room for this entry. */
6085 s->size += htab->plt_entry_size;
6086 /* After the 8192nd entry, room for two entries
6087 is allocated. */
6088 if (htab->plt_type == PLT_OLD
6089 && (s->size - htab->plt_initial_entry_size)
6090 / htab->plt_entry_size
6091 > PLT_NUM_SINGLE_ENTRIES)
6092 s->size += htab->plt_entry_size;
6093 }
6094 ent->plt.offset = plt_offset;
6095 }
6096
6097 /* We also need to make an entry in the .rela.plt section. */
6098 if (!doneone)
6099 {
6100 if (!dyn)
6101 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6102 else
6103 {
6104 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6105
6106 if (htab->plt_type == PLT_VXWORKS)
6107 {
6108 /* Allocate space for the unloaded relocations. */
6109 if (!bfd_link_pic (info)
6110 && htab->elf.dynamic_sections_created)
6111 {
6112 if (ent->plt.offset
6113 == (bfd_vma) htab->plt_initial_entry_size)
6114 {
6115 htab->srelplt2->size
6116 += (sizeof (Elf32_External_Rela)
6117 * VXWORKS_PLTRESOLVE_RELOCS);
6118 }
6119
6120 htab->srelplt2->size
6121 += (sizeof (Elf32_External_Rela)
6122 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6123 }
6124
6125 /* Every PLT entry has an associated GOT entry in
6126 .got.plt. */
6127 htab->elf.sgotplt->size += 4;
6128 }
6129 }
6130 doneone = TRUE;
6131 }
6132 }
6133 else
6134 ent->plt.offset = (bfd_vma) -1;
6135
6136 if (!doneone)
6137 {
6138 h->plt.plist = NULL;
6139 h->needs_plt = 0;
6140 }
6141 }
6142 else
6143 {
6144 h->plt.plist = NULL;
6145 h->needs_plt = 0;
6146 }
6147
25dbc73a
AM
6148 return TRUE;
6149}
7619e7c7 6150
625af618
AM
6151/* Set DF_TEXTREL if we find any dynamic relocs that apply to
6152 read-only sections. */
7619e7c7 6153
25dbc73a 6154static bfd_boolean
0caf6c82 6155maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
25dbc73a 6156{
98bbb1b8 6157 asection *sec;
0caf6c82 6158
25dbc73a
AM
6159 if (h->root.type == bfd_link_hash_indirect)
6160 return TRUE;
252b5132 6161
98bbb1b8
AM
6162 sec = readonly_dynrelocs (h);
6163 if (sec != NULL)
25dbc73a 6164 {
98bbb1b8
AM
6165 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
6166
0caf6c82 6167 info->flags |= DF_TEXTREL;
98bbb1b8 6168 info->callbacks->minfo
c1c8c1ef 6169 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
63c1f59d 6170 sec->owner, h->root.root.string, sec);
ee05f2fe 6171
625af618
AM
6172 /* Not an error, just cut short the traversal. */
6173 return FALSE;
25dbc73a
AM
6174 }
6175 return TRUE;
6176}
6177
6177242a
AM
6178static const unsigned char glink_eh_frame_cie[] =
6179{
6180 0, 0, 0, 16, /* length. */
6181 0, 0, 0, 0, /* id. */
6182 1, /* CIE version. */
6183 'z', 'R', 0, /* Augmentation string. */
6184 4, /* Code alignment. */
6185 0x7c, /* Data alignment. */
6186 65, /* RA reg. */
6187 1, /* Augmentation size. */
6188 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6189 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6190};
6191
25dbc73a
AM
6192/* Set the sizes of the dynamic sections. */
6193
6194static bfd_boolean
93d1b056 6195ppc_elf_size_dynamic_sections (bfd *output_bfd,
25dbc73a
AM
6196 struct bfd_link_info *info)
6197{
6198 struct ppc_elf_link_hash_table *htab;
6199 asection *s;
6200 bfd_boolean relocs;
6201 bfd *ibfd;
7fce784e 6202
252b5132 6203#ifdef DEBUG
25dbc73a 6204 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 6205#endif
252b5132 6206
25dbc73a
AM
6207 htab = ppc_elf_hash_table (info);
6208 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 6209
25dbc73a
AM
6210 if (elf_hash_table (info)->dynamic_sections_created)
6211 {
6212 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 6213 if (bfd_link_executable (info) && !info->nointerp)
25dbc73a 6214 {
3d4d4302 6215 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
25dbc73a
AM
6216 BFD_ASSERT (s != NULL);
6217 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6218 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6219 }
6220 }
252b5132 6221
4a3dc543 6222 if (htab->plt_type == PLT_OLD)
d7128ce4 6223 htab->got_header_size = 16;
4a3dc543 6224 else if (htab->plt_type == PLT_NEW)
d7128ce4 6225 htab->got_header_size = 12;
252b5132 6226
25dbc73a
AM
6227 /* Set up .got offsets for local syms, and space for local dynamic
6228 relocs. */
c72f2fb2 6229 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
25dbc73a
AM
6230 {
6231 bfd_signed_vma *local_got;
6232 bfd_signed_vma *end_local_got;
e054468f
AM
6233 struct plt_entry **local_plt;
6234 struct plt_entry **end_local_plt;
25dbc73a
AM
6235 char *lgot_masks;
6236 bfd_size_type locsymcount;
6237 Elf_Internal_Shdr *symtab_hdr;
7fce784e 6238
0c8d6e5c 6239 if (!is_ppc_elf (ibfd))
25dbc73a 6240 continue;
7fce784e 6241
25dbc73a
AM
6242 for (s = ibfd->sections; s != NULL; s = s->next)
6243 {
f95f8542 6244 struct ppc_dyn_relocs *p;
252b5132 6245
f95f8542 6246 for (p = ((struct ppc_dyn_relocs *)
25dbc73a
AM
6247 elf_section_data (s)->local_dynrel);
6248 p != NULL;
6249 p = p->next)
6250 {
6251 if (!bfd_is_abs_section (p->sec)
6252 && bfd_is_abs_section (p->sec->output_section))
6253 {
6254 /* Input section has been discarded, either because
6255 it is a copy of a linkonce section or due to
6256 linker script /DISCARD/, so we'll be discarding
6257 the relocs too. */
7fce784e 6258 }
3348747a
NS
6259 else if (htab->is_vxworks
6260 && strcmp (p->sec->output_section->name,
6261 ".tls_vars") == 0)
6262 {
6263 /* Relocations in vxworks .tls_vars sections are
6264 handled specially by the loader. */
6265 }
25dbc73a 6266 else if (p->count != 0)
7fce784e 6267 {
25f23106 6268 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6269 if (p->ifunc)
ce558b89 6270 sreloc = htab->elf.irelplt;
25f23106 6271 sreloc->size += p->count * sizeof (Elf32_External_Rela);
25dbc73a
AM
6272 if ((p->sec->output_section->flags
6273 & (SEC_READONLY | SEC_ALLOC))
6274 == (SEC_READONLY | SEC_ALLOC))
0caf6c82
L
6275 {
6276 info->flags |= DF_TEXTREL;
871b3ab2 6277 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
0caf6c82
L
6278 p->sec->owner, p->sec);
6279 }
7fce784e 6280 }
252b5132 6281 }
252b5132 6282 }
252b5132 6283
25dbc73a
AM
6284 local_got = elf_local_got_refcounts (ibfd);
6285 if (!local_got)
6286 continue;
252b5132 6287
0ffa91dd 6288 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
6289 locsymcount = symtab_hdr->sh_info;
6290 end_local_got = local_got + locsymcount;
e054468f
AM
6291 local_plt = (struct plt_entry **) end_local_got;
6292 end_local_plt = local_plt + locsymcount;
6293 lgot_masks = (char *) end_local_plt;
91d6fa6a 6294
25dbc73a
AM
6295 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6296 if (*local_got > 0)
6297 {
f15d0b54
AM
6298 unsigned int need;
6299 if ((*lgot_masks & TLS_LD) != 0)
6300 htab->tlsld_got.refcount += 1;
6301 need = got_entries_needed (*lgot_masks);
d6e14abc
AM
6302 if (need == 0)
6303 *local_got = (bfd_vma) -1;
25dbc73a
AM
6304 else
6305 {
3b36f7e6 6306 *local_got = allocate_got (htab, need);
0e1862bb 6307 if (bfd_link_pic (info))
0bed072f 6308 {
f15d0b54
AM
6309 asection *srel;
6310 bfd_boolean tprel_known = bfd_link_executable (info);
6311
6312 need = got_relocs_needed (*lgot_masks, need, tprel_known);
6313 srel = htab->elf.srelgot;
0bed072f 6314 if ((*lgot_masks & PLT_IFUNC) != 0)
ce558b89 6315 srel = htab->elf.irelplt;
f15d0b54 6316 srel->size += need;
0bed072f 6317 }
25dbc73a
AM
6318 }
6319 }
6320 else
6321 *local_got = (bfd_vma) -1;
e054468f
AM
6322
6323 if (htab->is_vxworks)
6324 continue;
6325
6326 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6327 for (; local_plt < end_local_plt; ++local_plt)
6328 {
6329 struct plt_entry *ent;
6330 bfd_boolean doneone = FALSE;
6331 bfd_vma plt_offset = 0, glink_offset = 0;
6332
6333 for (ent = *local_plt; ent != NULL; ent = ent->next)
6334 if (ent->plt.refcount > 0)
6335 {
ce558b89 6336 s = htab->elf.iplt;
e054468f
AM
6337
6338 if (!doneone)
6339 {
6340 plt_offset = s->size;
6341 s->size += 4;
6342 }
6343 ent->plt.offset = plt_offset;
6344
6345 s = htab->glink;
0e1862bb 6346 if (!doneone || bfd_link_pic (info))
e054468f
AM
6347 {
6348 glink_offset = s->size;
9e390558 6349 s->size += GLINK_ENTRY_SIZE (htab, NULL);
e054468f
AM
6350 }
6351 ent->glink_offset = glink_offset;
6352
6353 if (!doneone)
6354 {
ce558b89 6355 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
e054468f
AM
6356 doneone = TRUE;
6357 }
6358 }
6359 else
6360 ent->plt.offset = (bfd_vma) -1;
6361 }
25dbc73a 6362 }
252b5132 6363
b7fcf6f6
AM
6364 /* Allocate space for global sym dynamic relocs. */
6365 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6366
3b36f7e6
AM
6367 if (htab->tlsld_got.refcount > 0)
6368 {
6369 htab->tlsld_got.offset = allocate_got (htab, 8);
0e1862bb 6370 if (bfd_link_pic (info))
ce558b89 6371 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
3b36f7e6
AM
6372 }
6373 else
6374 htab->tlsld_got.offset = (bfd_vma) -1;
6375
ce558b89 6376 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
6377 {
6378 unsigned int g_o_t = 32768;
6379
4d962050
AM
6380 /* If we haven't allocated the header, do so now. When we get here,
6381 for old plt/got the got size will be 0 to 32764 (not allocated),
6382 or 32780 to 65536 (header allocated). For new plt/got, the
6383 corresponding ranges are 0 to 32768 and 32780 to 65536. */
ce558b89 6384 if (htab->elf.sgot->size <= 32768)
3b36f7e6 6385 {
ce558b89 6386 g_o_t = htab->elf.sgot->size;
4a3dc543 6387 if (htab->plt_type == PLT_OLD)
4d962050 6388 g_o_t += 4;
ce558b89 6389 htab->elf.sgot->size += htab->got_header_size;
3b36f7e6 6390 }
3b36f7e6
AM
6391
6392 htab->elf.hgot->root.u.def.value = g_o_t;
6393 }
0e1862bb 6394 if (bfd_link_pic (info))
bd6c6e2b
AM
6395 {
6396 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
93d1b056
AM
6397
6398 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6399 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
bd6c6e2b 6400 }
15bfcc77
AM
6401 if (info->emitrelocations)
6402 {
6403 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6404
6405 if (sda != NULL && sda->ref_regular)
6406 sda->root.u.def.section->flags |= SEC_KEEP;
6407 sda = htab->sdata[1].sym;
6408 if (sda != NULL && sda->ref_regular)
6409 sda->root.u.def.section->flags |= SEC_KEEP;
6410 }
3b36f7e6 6411
e054468f
AM
6412 if (htab->glink != NULL
6413 && htab->glink->size != 0
6414 && htab->elf.dynamic_sections_created)
d7128ce4
AM
6415 {
6416 htab->glink_pltresolve = htab->glink->size;
9e390558
AM
6417 /* Space for the branch table. */
6418 htab->glink->size
6419 += htab->elf.srelplt->size / (sizeof (Elf32_External_Rela) / 4) - 4;
86b9da88 6420 /* Pad out to align the start of PLTresolve. */
5446cbdf
AM
6421 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6422 ? 63 : 15);
d7128ce4 6423 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910 6424
5446cbdf 6425 if (htab->params->emit_stub_syms)
0ba07910
AM
6426 {
6427 struct elf_link_hash_entry *sh;
6428 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6429 TRUE, FALSE, FALSE);
6430 if (sh == NULL)
6431 return FALSE;
6432 if (sh->root.type == bfd_link_hash_new)
6433 {
6434 sh->root.type = bfd_link_hash_defined;
6435 sh->root.u.def.section = htab->glink;
6436 sh->root.u.def.value = htab->glink_pltresolve;
6437 sh->ref_regular = 1;
6438 sh->def_regular = 1;
6439 sh->ref_regular_nonweak = 1;
6440 sh->forced_local = 1;
6441 sh->non_elf = 0;
2ec55de3 6442 sh->root.linker_def = 1;
0ba07910
AM
6443 }
6444 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6445 TRUE, FALSE, FALSE);
6446 if (sh == NULL)
6447 return FALSE;
6448 if (sh->root.type == bfd_link_hash_new)
6449 {
6450 sh->root.type = bfd_link_hash_defined;
6451 sh->root.u.def.section = htab->glink;
6452 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6453 sh->ref_regular = 1;
6454 sh->def_regular = 1;
6455 sh->ref_regular_nonweak = 1;
6456 sh->forced_local = 1;
6457 sh->non_elf = 0;
2ec55de3 6458 sh->root.linker_def = 1;
0ba07910
AM
6459 }
6460 }
d7128ce4
AM
6461 }
6462
6177242a
AM
6463 if (htab->glink != NULL
6464 && htab->glink->size != 0
6465 && htab->glink_eh_frame != NULL
9a2a56cc
AM
6466 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6467 && _bfd_elf_eh_frame_present (info))
6177242a
AM
6468 {
6469 s = htab->glink_eh_frame;
6470 s->size = sizeof (glink_eh_frame_cie) + 20;
0e1862bb 6471 if (bfd_link_pic (info))
6177242a
AM
6472 {
6473 s->size += 4;
6474 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6475 s->size += 4;
6476 }
6477 }
6478
25dbc73a
AM
6479 /* We've now determined the sizes of the various dynamic sections.
6480 Allocate memory for them. */
6481 relocs = FALSE;
6482 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 6483 {
9d8504b1
PB
6484 bfd_boolean strip_section = TRUE;
6485
25dbc73a
AM
6486 if ((s->flags & SEC_LINKER_CREATED) == 0)
6487 continue;
252b5132 6488
ce558b89
AM
6489 if (s == htab->elf.splt
6490 || s == htab->elf.sgot)
25dbc73a 6491 {
9d8504b1
PB
6492 /* We'd like to strip these sections if they aren't needed, but if
6493 we've exported dynamic symbols from them we must leave them.
6494 It's too late to tell BFD to get rid of the symbols. */
e054468f 6495 if (htab->elf.hplt != NULL)
9d8504b1 6496 strip_section = FALSE;
25dbc73a
AM
6497 /* Strip this section if we don't need it; see the
6498 comment below. */
6499 }
ce558b89 6500 else if (s == htab->elf.iplt
e054468f 6501 || s == htab->glink
6177242a 6502 || s == htab->glink_eh_frame
ce558b89 6503 || s == htab->elf.sgotplt
e054468f 6504 || s == htab->sbss
9d19e4fd 6505 || s == htab->elf.sdynbss
5474d94f 6506 || s == htab->elf.sdynrelro
15bfcc77 6507 || s == htab->dynsbss)
25dbc73a 6508 {
c9a2f333 6509 /* Strip these too. */
25dbc73a 6510 }
15bfcc77
AM
6511 else if (s == htab->sdata[0].section
6512 || s == htab->sdata[1].section)
6513 {
6514 strip_section = (s->flags & SEC_KEEP) == 0;
6515 }
a0f49396
NC
6516 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6517 ".rela"))
25dbc73a 6518 {
c456f082 6519 if (s->size != 0)
25dbc73a
AM
6520 {
6521 /* Remember whether there are any relocation sections. */
6522 relocs = TRUE;
252b5132 6523
25dbc73a
AM
6524 /* We use the reloc_count field as a counter if we need
6525 to copy relocs into the output file. */
6526 s->reloc_count = 0;
252b5132
RH
6527 }
6528 }
25dbc73a
AM
6529 else
6530 {
6531 /* It's not one of our sections, so don't allocate space. */
6532 continue;
6533 }
252b5132 6534
9d8504b1 6535 if (s->size == 0 && strip_section)
25dbc73a 6536 {
c456f082
AM
6537 /* If we don't need this section, strip it from the
6538 output file. This is mostly to handle .rela.bss and
6539 .rela.plt. We must create both sections in
6540 create_dynamic_sections, because they must be created
6541 before the linker maps input sections to output
6542 sections. The linker does that before
6543 adjust_dynamic_symbol is called, and it is that
6544 function which decides whether anything needs to go
6545 into these sections. */
8423293d 6546 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
6547 continue;
6548 }
7fce784e 6549
d7128ce4 6550 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
6551 continue;
6552
25dbc73a
AM
6553 /* Allocate memory for the section contents. */
6554 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6555 if (s->contents == NULL)
6556 return FALSE;
6557 }
252b5132 6558
25dbc73a 6559 if (htab->elf.dynamic_sections_created)
7619e7c7 6560 {
25dbc73a
AM
6561 /* Add some entries to the .dynamic section. We fill in the
6562 values later, in ppc_elf_finish_dynamic_sections, but we
6563 must add the entries now so that we get the correct size for
6564 the .dynamic section. The DT_DEBUG entry is filled in by the
6565 dynamic linker and used by the debugger. */
6566#define add_dynamic_entry(TAG, VAL) \
6567 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 6568
0e1862bb 6569 if (bfd_link_executable (info))
7619e7c7 6570 {
25dbc73a
AM
6571 if (!add_dynamic_entry (DT_DEBUG, 0))
6572 return FALSE;
7619e7c7
AM
6573 }
6574
ce558b89 6575 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
7619e7c7 6576 {
25dbc73a
AM
6577 if (!add_dynamic_entry (DT_PLTGOT, 0)
6578 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6579 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6580 || !add_dynamic_entry (DT_JMPREL, 0))
6581 return FALSE;
6582 }
7619e7c7 6583
c7e17e05
AM
6584 if (htab->plt_type == PLT_NEW
6585 && htab->glink != NULL
6586 && htab->glink->size != 0)
d7128ce4 6587 {
1fe44d79 6588 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4 6589 return FALSE;
5446cbdf 6590 if (!htab->params->no_tls_get_addr_opt
a7f2871e
AM
6591 && htab->tls_get_addr != NULL
6592 && htab->tls_get_addr->plt.plist != NULL
e8910a83 6593 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
a7f2871e 6594 return FALSE;
d7128ce4
AM
6595 }
6596
25dbc73a
AM
6597 if (relocs)
6598 {
6599 if (!add_dynamic_entry (DT_RELA, 0)
6600 || !add_dynamic_entry (DT_RELASZ, 0)
6601 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6602 return FALSE;
6603 }
7619e7c7 6604
25dbc73a
AM
6605 /* If any dynamic relocs apply to a read-only section, then we
6606 need a DT_TEXTREL entry. */
6607 if ((info->flags & DF_TEXTREL) == 0)
625af618 6608 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 6609 info);
7619e7c7 6610
25dbc73a
AM
6611 if ((info->flags & DF_TEXTREL) != 0)
6612 {
6613 if (!add_dynamic_entry (DT_TEXTREL, 0))
6614 return FALSE;
7619e7c7 6615 }
7a2b07ff
NS
6616 if (htab->is_vxworks
6617 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6618 return FALSE;
6619 }
25dbc73a
AM
6620#undef add_dynamic_entry
6621
7e01508c
AM
6622 if (htab->glink_eh_frame != NULL
6623 && htab->glink_eh_frame->contents != NULL)
6624 {
6625 unsigned char *p = htab->glink_eh_frame->contents;
6626 bfd_vma val;
6627
6628 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6629 /* CIE length (rewrite in case little-endian). */
6630 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6631 p += sizeof (glink_eh_frame_cie);
6632 /* FDE length. */
6633 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6634 bfd_put_32 (htab->elf.dynobj, val, p);
6635 p += 4;
6636 /* CIE pointer. */
6637 val = p - htab->glink_eh_frame->contents;
6638 bfd_put_32 (htab->elf.dynobj, val, p);
6639 p += 4;
6640 /* Offset to .glink. Set later. */
6641 p += 4;
6642 /* .glink size. */
6643 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6644 p += 4;
6645 /* Augmentation. */
6646 p += 1;
6647
0e1862bb 6648 if (bfd_link_pic (info)
7e01508c
AM
6649 && htab->elf.dynamic_sections_created)
6650 {
6651 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6652 if (adv < 64)
6653 *p++ = DW_CFA_advance_loc + adv;
6654 else if (adv < 256)
6655 {
6656 *p++ = DW_CFA_advance_loc1;
6657 *p++ = adv;
6658 }
6659 else if (adv < 65536)
6660 {
6661 *p++ = DW_CFA_advance_loc2;
6662 bfd_put_16 (htab->elf.dynobj, adv, p);
6663 p += 2;
6664 }
6665 else
6666 {
6667 *p++ = DW_CFA_advance_loc4;
6668 bfd_put_32 (htab->elf.dynobj, adv, p);
6669 p += 4;
6670 }
6671 *p++ = DW_CFA_register;
6672 *p++ = 65;
6673 p++;
6674 *p++ = DW_CFA_advance_loc + 4;
6675 *p++ = DW_CFA_restore_extended;
6676 *p++ = 65;
6677 }
6678 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6679 == htab->glink_eh_frame->size);
6680 }
6681
7619e7c7
AM
6682 return TRUE;
6683}
0eb4a168 6684
93d1b056
AM
6685/* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6686 if it looks like nothing is using them. */
6687
6688static void
6689maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6690{
6691 struct elf_link_hash_entry *sda = lsect->sym;
6692
6693 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6694 {
6695 asection *s;
6696
6697 s = bfd_get_section_by_name (output_bfd, lsect->name);
6698 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6699 {
6700 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6701 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6702 {
6703 sda->def_regular = 0;
6704 /* This is somewhat magic. See elf_link_output_extsym. */
6705 sda->ref_dynamic = 1;
6706 sda->forced_local = 0;
6707 }
6708 }
6709 }
6710}
6711
6712void
6713ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6714{
6715 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6716
6717 if (htab != NULL)
6718 {
6719 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6720 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6721 }
6722}
6723
6724
0eb4a168
AM
6725/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6726
6727static bfd_boolean
6728ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6729{
6730 if (h->plt.plist != NULL
6731 && !h->def_regular
6732 && (!h->pointer_equality_needed
6733 || !h->ref_regular_nonweak))
6734 return FALSE;
6735
6736 return _bfd_elf_hash_symbol (h);
6737}
25dbc73a
AM
6738\f
6739#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6740
01017ef8
NS
6741/* Relaxation trampolines. r12 is available for clobbering (r11, is
6742 used for some functions that are allowed to break the ABI). */
25dbc73a
AM
6743static const int shared_stub_entry[] =
6744 {
6745 0x7c0802a6, /* mflr 0 */
6746 0x429f0005, /* bcl 20, 31, .Lxxx */
01017ef8
NS
6747 0x7d8802a6, /* mflr 12 */
6748 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
53291d1f 6749 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
25dbc73a 6750 0x7c0803a6, /* mtlr 0 */
01017ef8 6751 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6752 0x4e800420, /* bctr */
6753 };
6754
6755static const int stub_entry[] =
6756 {
01017ef8
NS
6757 0x3d800000, /* lis 12,xxx@ha */
6758 0x398c0000, /* addi 12,12,xxx@l */
6759 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6760 0x4e800420, /* bctr */
6761 };
6762
5446cbdf
AM
6763struct ppc_elf_relax_info
6764{
6765 unsigned int workaround_size;
d3e454b9 6766 unsigned int picfixup_size;
5446cbdf
AM
6767};
6768
6769/* This function implements long branch trampolines, and the ppc476
6770 icache bug workaround. Any section needing trampolines or patch
6771 space for the workaround has its size extended so that we can
53291d1f 6772 add trampolines at the end of the section. */
5446cbdf 6773
25dbc73a
AM
6774static bfd_boolean
6775ppc_elf_relax_section (bfd *abfd,
6776 asection *isec,
6777 struct bfd_link_info *link_info,
6778 bfd_boolean *again)
6779{
d3e454b9 6780 struct one_branch_fixup
25dbc73a 6781 {
d3e454b9 6782 struct one_branch_fixup *next;
25dbc73a 6783 asection *tsec;
01017ef8
NS
6784 /* Final link, can use the symbol offset. For a
6785 relocatable link we use the symbol's index. */
25dbc73a
AM
6786 bfd_vma toff;
6787 bfd_vma trampoff;
6788 };
7619e7c7 6789
25dbc73a
AM
6790 Elf_Internal_Shdr *symtab_hdr;
6791 bfd_byte *contents = NULL;
6792 Elf_Internal_Sym *isymbuf = NULL;
6793 Elf_Internal_Rela *internal_relocs = NULL;
5446cbdf 6794 Elf_Internal_Rela *irel, *irelend = NULL;
d3e454b9 6795 struct one_branch_fixup *branch_fixups = NULL;
5446cbdf 6796 struct ppc_elf_relax_info *relax_info = NULL;
9bc4e62b 6797 unsigned changes = 0;
5446cbdf 6798 bfd_boolean workaround_change;
d7128ce4 6799 struct ppc_elf_link_hash_table *htab;
d3e454b9 6800 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
a6aa5195 6801 asection *got2;
50248c89 6802 bfd_boolean maybe_pasted;
7619e7c7 6803
25dbc73a 6804 *again = FALSE;
7619e7c7 6805
5446cbdf 6806 /* No need to do anything with non-alloc or non-code sections. */
c87b5a93 6807 if ((isec->flags & SEC_ALLOC) == 0
a8ad78a7 6808 || (isec->flags & SEC_CODE) == 0
5446cbdf
AM
6809 || (isec->flags & SEC_LINKER_CREATED) != 0
6810 || isec->size < 4)
25dbc73a 6811 return TRUE;
7619e7c7 6812
c8a1f254
NS
6813 /* We cannot represent the required PIC relocs in the output, so don't
6814 do anything. The linker doesn't support mixing -shared and -r
6815 anyway. */
0e1862bb 6816 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
795bc6b3 6817 return TRUE;
5b914448 6818
5446cbdf
AM
6819 htab = ppc_elf_hash_table (link_info);
6820 if (htab == NULL)
6821 return TRUE;
6822
6823 isec->size = (isec->size + 3) & -4;
6824 if (isec->rawsize == 0)
6825 isec->rawsize = isec->size;
6826 trampbase = isec->size;
6827
53291d1f
AM
6828 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6829 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6830 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6831
d3e454b9
AM
6832 if (htab->params->ppc476_workaround
6833 || htab->params->pic_fixup > 0)
5446cbdf
AM
6834 {
6835 if (elf_section_data (isec)->sec_info == NULL)
6836 {
5446cbdf
AM
6837 elf_section_data (isec)->sec_info
6838 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6839 if (elf_section_data (isec)->sec_info == NULL)
6840 return FALSE;
6841 }
6842 relax_info = elf_section_data (isec)->sec_info;
6843 trampbase -= relax_info->workaround_size;
6844 }
6845
50248c89
AM
6846 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6847 || strcmp (isec->output_section->name, ".fini") == 0);
25dbc73a 6848 /* Space for a branch around any trampolines. */
5446cbdf
AM
6849 trampoff = trampbase;
6850 if (maybe_pasted && trampbase == isec->rawsize)
50248c89 6851 trampoff += 4;
7619e7c7 6852
0ffa91dd 6853 symtab_hdr = &elf_symtab_hdr (abfd);
d3e454b9
AM
6854 picfixup_size = 0;
6855 if (htab->params->branch_trampolines
6856 || htab->params->pic_fixup > 0)
7619e7c7 6857 {
5446cbdf
AM
6858 /* Get a copy of the native relocations. */
6859 if (isec->reloc_count != 0)
25dbc73a 6860 {
5446cbdf
AM
6861 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6862 link_info->keep_memory);
6863 if (internal_relocs == NULL)
6864 goto error_return;
25dbc73a 6865 }
7619e7c7 6866
5446cbdf
AM
6867 got2 = bfd_get_section_by_name (abfd, ".got2");
6868
6869 irelend = internal_relocs + isec->reloc_count;
6870 for (irel = internal_relocs; irel < irelend; irel++)
25dbc73a 6871 {
5446cbdf
AM
6872 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6873 bfd_vma toff, roff;
6874 asection *tsec;
d3e454b9 6875 struct one_branch_fixup *f;
5446cbdf 6876 size_t insn_offset = 0;
d3e454b9 6877 bfd_vma max_branch_offset = 0, val;
5446cbdf
AM
6878 bfd_byte *hit_addr;
6879 unsigned long t0;
6880 struct elf_link_hash_entry *h;
6881 struct plt_entry **plist;
6882 unsigned char sym_type;
6883
6884 switch (r_type)
6885 {
6886 case R_PPC_REL24:
6887 case R_PPC_LOCAL24PC:
6888 case R_PPC_PLTREL24:
6889 max_branch_offset = 1 << 25;
6890 break;
6891
6892 case R_PPC_REL14:
6893 case R_PPC_REL14_BRTAKEN:
6894 case R_PPC_REL14_BRNTAKEN:
6895 max_branch_offset = 1 << 15;
6896 break;
7fce784e 6897
d3e454b9
AM
6898 case R_PPC_ADDR16_HA:
6899 if (htab->params->pic_fixup > 0)
6900 break;
6901 continue;
6902
5446cbdf
AM
6903 default:
6904 continue;
6905 }
6906
6907 /* Get the value of the symbol referred to by the reloc. */
6908 h = NULL;
6909 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
25dbc73a 6910 {
5446cbdf
AM
6911 /* A local symbol. */
6912 Elf_Internal_Sym *isym;
6913
6914 /* Read this BFD's local symbols. */
25dbc73a 6915 if (isymbuf == NULL)
5446cbdf
AM
6916 {
6917 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6918 if (isymbuf == NULL)
6919 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6920 symtab_hdr->sh_info, 0,
6921 NULL, NULL, NULL);
6922 if (isymbuf == 0)
6923 goto error_return;
6924 }
6925 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6926 if (isym->st_shndx == SHN_UNDEF)
6927 tsec = bfd_und_section_ptr;
6928 else if (isym->st_shndx == SHN_ABS)
6929 tsec = bfd_abs_section_ptr;
6930 else if (isym->st_shndx == SHN_COMMON)
6931 tsec = bfd_com_section_ptr;
6932 else
6933 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6934
6935 toff = isym->st_value;
6936 sym_type = ELF_ST_TYPE (isym->st_info);
25dbc73a 6937 }
25dbc73a 6938 else
5446cbdf
AM
6939 {
6940 /* Global symbol handling. */
6941 unsigned long indx;
7fce784e 6942
5446cbdf
AM
6943 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6944 h = elf_sym_hashes (abfd)[indx];
7619e7c7 6945
5446cbdf
AM
6946 while (h->root.type == bfd_link_hash_indirect
6947 || h->root.type == bfd_link_hash_warning)
6948 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 6949
5446cbdf
AM
6950 if (h->root.type == bfd_link_hash_defined
6951 || h->root.type == bfd_link_hash_defweak)
6952 {
6953 tsec = h->root.u.def.section;
6954 toff = h->root.u.def.value;
6955 }
6956 else if (h->root.type == bfd_link_hash_undefined
6957 || h->root.type == bfd_link_hash_undefweak)
6958 {
6959 tsec = bfd_und_section_ptr;
0e1862bb 6960 toff = bfd_link_relocatable (link_info) ? indx : 0;
5446cbdf
AM
6961 }
6962 else
6963 continue;
6964
9f7552cf
AM
6965 /* If this branch is to __tls_get_addr then we may later
6966 optimise away the call. We won't be needing a long-
6967 branch stub in that case. */
0e1862bb 6968 if (bfd_link_executable (link_info)
9f7552cf
AM
6969 && h == htab->tls_get_addr
6970 && irel != internal_relocs)
6971 {
6972 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6973 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6974 unsigned int tls_mask = 0;
6975
6976 /* The previous reloc should be one of R_PPC_TLSGD or
6977 R_PPC_TLSLD, or for older object files, a reloc
6978 on the __tls_get_addr arg setup insn. Get tls
6979 mask bits from the symbol on that reloc. */
6980 if (t_symndx < symtab_hdr->sh_info)
6981 {
6982 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6983
6984 if (local_got_offsets != NULL)
6985 {
6986 struct plt_entry **local_plt = (struct plt_entry **)
6987 (local_got_offsets + symtab_hdr->sh_info);
6988 char *lgot_masks = (char *)
6989 (local_plt + symtab_hdr->sh_info);
6990 tls_mask = lgot_masks[t_symndx];
6991 }
6992 }
6993 else
6994 {
6995 struct elf_link_hash_entry *th
6996 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6997
6998 while (th->root.type == bfd_link_hash_indirect
6999 || th->root.type == bfd_link_hash_warning)
7000 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7001
7002 tls_mask
7003 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7004 }
7005
7006 /* The mask bits tell us if the call will be
7007 optimised away. */
7008 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7009 && (t_rtype == R_PPC_TLSGD
7010 || t_rtype == R_PPC_GOT_TLSGD16
7011 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7012 continue;
7013 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7014 && (t_rtype == R_PPC_TLSLD
7015 || t_rtype == R_PPC_GOT_TLSLD16
7016 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7017 continue;
7018 }
7019
5446cbdf
AM
7020 sym_type = h->type;
7021 }
7619e7c7 7022
d3e454b9
AM
7023 if (r_type == R_PPC_ADDR16_HA)
7024 {
7025 if (h != NULL
7026 && !h->def_regular
7027 && h->protected_def
7028 && ppc_elf_hash_entry (h)->has_addr16_ha
7029 && ppc_elf_hash_entry (h)->has_addr16_lo)
7030 picfixup_size += 12;
7031 continue;
7032 }
7033
5446cbdf
AM
7034 /* The condition here under which we call find_plt_ent must
7035 match that in relocate_section. If we call find_plt_ent here
7036 but not in relocate_section, or vice versa, then the branch
7037 destination used here may be incorrect. */
7038 plist = NULL;
7039 if (h != NULL)
25dbc73a 7040 {
5446cbdf
AM
7041 /* We know is_branch_reloc (r_type) is true. */
7042 if (h->type == STT_GNU_IFUNC
7043 || r_type == R_PPC_PLTREL24)
7044 plist = &h->plt.plist;
25dbc73a 7045 }
5446cbdf
AM
7046 else if (sym_type == STT_GNU_IFUNC
7047 && elf_local_got_offsets (abfd) != NULL)
c8a1f254 7048 {
5446cbdf
AM
7049 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7050 struct plt_entry **local_plt = (struct plt_entry **)
7051 (local_got_offsets + symtab_hdr->sh_info);
7052 plist = local_plt + ELF32_R_SYM (irel->r_info);
c8a1f254 7053 }
5446cbdf 7054 if (plist != NULL)
a9585d22 7055 {
5446cbdf
AM
7056 bfd_vma addend = 0;
7057 struct plt_entry *ent;
7058
0e1862bb 7059 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
5446cbdf
AM
7060 addend = irel->r_addend;
7061 ent = find_plt_ent (plist, got2, addend);
7062 if (ent != NULL)
a9585d22 7063 {
5446cbdf
AM
7064 if (htab->plt_type == PLT_NEW
7065 || h == NULL
7066 || !htab->elf.dynamic_sections_created
7067 || h->dynindx == -1)
7068 {
7069 tsec = htab->glink;
7070 toff = ent->glink_offset;
7071 }
7072 else
7073 {
ce558b89 7074 tsec = htab->elf.splt;
5446cbdf
AM
7075 toff = ent->plt.offset;
7076 }
de972ffa
AM
7077 }
7078 }
de972ffa 7079
5446cbdf
AM
7080 /* If the branch and target are in the same section, you have
7081 no hope of adding stubs. We'll error out later should the
7082 branch overflow. */
7083 if (tsec == isec)
7084 continue;
25dbc73a 7085
5446cbdf
AM
7086 /* There probably isn't any reason to handle symbols in
7087 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7088 attribute for a code section, and we are only looking at
7089 branches. However, implement it correctly here as a
7090 reference for other target relax_section functions. */
7091 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7092 {
7093 /* At this stage in linking, no SEC_MERGE symbol has been
7094 adjusted, so all references to such symbols need to be
7095 passed through _bfd_merged_section_offset. (Later, in
7096 relocate_section, all SEC_MERGE symbols *except* for
7097 section symbols have been adjusted.)
7098
7099 gas may reduce relocations against symbols in SEC_MERGE
7100 sections to a relocation against the section symbol when
7101 the original addend was zero. When the reloc is against
7102 a section symbol we should include the addend in the
7103 offset passed to _bfd_merged_section_offset, since the
7104 location of interest is the original symbol. On the
7105 other hand, an access to "sym+addend" where "sym" is not
7106 a section symbol should not include the addend; Such an
7107 access is presumed to be an offset from "sym"; The
7108 location of interest is just "sym". */
7109 if (sym_type == STT_SECTION)
7110 toff += irel->r_addend;
7111
7112 toff
7113 = _bfd_merged_section_offset (abfd, &tsec,
7114 elf_section_data (tsec)->sec_info,
7115 toff);
7116
7117 if (sym_type != STT_SECTION)
7118 toff += irel->r_addend;
7119 }
7120 /* PLTREL24 addends are special. */
7121 else if (r_type != R_PPC_PLTREL24)
25dbc73a 7122 toff += irel->r_addend;
7619e7c7 7123
5446cbdf 7124 /* Attempted -shared link of non-pic code loses. */
0e1862bb 7125 if ((!bfd_link_relocatable (link_info)
5446cbdf
AM
7126 && tsec == bfd_und_section_ptr)
7127 || tsec->output_section == NULL
7128 || (tsec->owner != NULL
7129 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7130 continue;
7619e7c7 7131
5446cbdf 7132 roff = irel->r_offset;
7de713b9 7133
5446cbdf
AM
7134 /* If the branch is in range, no need to do anything. */
7135 if (tsec != bfd_und_section_ptr
0e1862bb 7136 && (!bfd_link_relocatable (link_info)
5446cbdf
AM
7137 /* A relocatable link may have sections moved during
7138 final link, so do not presume they remain in range. */
7139 || tsec->output_section == isec->output_section))
7140 {
7141 bfd_vma symaddr, reladdr;
7619e7c7 7142
5446cbdf
AM
7143 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7144 reladdr = isec->output_section->vma + isec->output_offset + roff;
7145 if (symaddr - reladdr + max_branch_offset
7146 < 2 * max_branch_offset)
7147 continue;
7148 }
01017ef8 7149
5446cbdf 7150 /* Look for an existing fixup to this address. */
d3e454b9 7151 for (f = branch_fixups; f ; f = f->next)
5446cbdf
AM
7152 if (f->tsec == tsec && f->toff == toff)
7153 break;
252b5132 7154
5446cbdf
AM
7155 if (f == NULL)
7156 {
7157 size_t size;
7158 unsigned long stub_rtype;
25dbc73a 7159
5446cbdf
AM
7160 val = trampoff - roff;
7161 if (val >= max_branch_offset)
7162 /* Oh dear, we can't reach a trampoline. Don't try to add
7163 one. We'll report an error later. */
7164 continue;
252b5132 7165
0e1862bb 7166 if (bfd_link_pic (link_info))
5446cbdf
AM
7167 {
7168 size = 4 * ARRAY_SIZE (shared_stub_entry);
7169 insn_offset = 12;
7170 }
7171 else
7172 {
7173 size = 4 * ARRAY_SIZE (stub_entry);
7174 insn_offset = 0;
7175 }
7176 stub_rtype = R_PPC_RELAX;
ce558b89 7177 if (tsec == htab->elf.splt
5446cbdf
AM
7178 || tsec == htab->glink)
7179 {
7180 stub_rtype = R_PPC_RELAX_PLT;
7181 if (r_type == R_PPC_PLTREL24)
7182 stub_rtype = R_PPC_RELAX_PLTREL24;
7183 }
252b5132 7184
5446cbdf
AM
7185 /* Hijack the old relocation. Since we need two
7186 relocations for this use a "composite" reloc. */
7187 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7188 stub_rtype);
7189 irel->r_offset = trampoff + insn_offset;
7190 if (r_type == R_PPC_PLTREL24
7191 && stub_rtype != R_PPC_RELAX_PLTREL24)
7192 irel->r_addend = 0;
7193
7194 /* Record the fixup so we don't do it again this section. */
7195 f = bfd_malloc (sizeof (*f));
d3e454b9 7196 f->next = branch_fixups;
5446cbdf
AM
7197 f->tsec = tsec;
7198 f->toff = toff;
7199 f->trampoff = trampoff;
d3e454b9 7200 branch_fixups = f;
5446cbdf
AM
7201
7202 trampoff += size;
7203 changes++;
25dbc73a
AM
7204 }
7205 else
7206 {
5446cbdf
AM
7207 val = f->trampoff - roff;
7208 if (val >= max_branch_offset)
7209 continue;
252b5132 7210
5446cbdf
AM
7211 /* Nop out the reloc, since we're finalizing things here. */
7212 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7213 }
252b5132 7214
5446cbdf
AM
7215 /* Get the section contents. */
7216 if (contents == NULL)
25dbc73a 7217 {
5446cbdf
AM
7218 /* Get cached copy if it exists. */
7219 if (elf_section_data (isec)->this_hdr.contents != NULL)
7220 contents = elf_section_data (isec)->this_hdr.contents;
25dbc73a 7221 /* Go get them off disk. */
5446cbdf 7222 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
25dbc73a
AM
7223 goto error_return;
7224 }
252b5132 7225
5446cbdf
AM
7226 /* Fix up the existing branch to hit the trampoline. */
7227 hit_addr = contents + roff;
7228 switch (r_type)
7229 {
7230 case R_PPC_REL24:
7231 case R_PPC_LOCAL24PC:
7232 case R_PPC_PLTREL24:
7233 t0 = bfd_get_32 (abfd, hit_addr);
7234 t0 &= ~0x3fffffc;
7235 t0 |= val & 0x3fffffc;
7236 bfd_put_32 (abfd, t0, hit_addr);
7237 break;
252b5132 7238
5446cbdf
AM
7239 case R_PPC_REL14:
7240 case R_PPC_REL14_BRTAKEN:
7241 case R_PPC_REL14_BRNTAKEN:
7242 t0 = bfd_get_32 (abfd, hit_addr);
7243 t0 &= ~0xfffc;
7244 t0 |= val & 0xfffc;
7245 bfd_put_32 (abfd, t0, hit_addr);
7246 break;
7247 }
25dbc73a 7248 }
252b5132 7249
d3e454b9 7250 while (branch_fixups != NULL)
25dbc73a 7251 {
d3e454b9
AM
7252 struct one_branch_fixup *f = branch_fixups;
7253 branch_fixups = branch_fixups->next;
25dbc73a
AM
7254 free (f);
7255 }
5446cbdf 7256 }
252b5132 7257
5446cbdf
AM
7258 workaround_change = FALSE;
7259 newsize = trampoff;
795bc6b3 7260 if (htab->params->ppc476_workaround
0e1862bb 7261 && (!bfd_link_relocatable (link_info)
795bc6b3 7262 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
5446cbdf
AM
7263 {
7264 bfd_vma addr, end_addr;
7265 unsigned int crossings;
795bc6b3 7266 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf
AM
7267
7268 addr = isec->output_section->vma + isec->output_offset;
6128f9cf 7269 end_addr = addr + trampoff;
5446cbdf 7270 addr &= -pagesize;
795bc6b3 7271 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
5446cbdf
AM
7272 if (crossings != 0)
7273 {
7274 /* Keep space aligned, to ensure the patch code itself does
7275 not cross a page. Don't decrease size calculated on a
7276 previous pass as otherwise we might never settle on a layout. */
1e269e9b 7277 newsize = 15 - ((end_addr - 1) & 15);
5446cbdf
AM
7278 newsize += crossings * 16;
7279 if (relax_info->workaround_size < newsize)
7280 {
7281 relax_info->workaround_size = newsize;
7282 workaround_change = TRUE;
5446cbdf
AM
7283 }
7284 /* Ensure relocate_section is called. */
7285 isec->flags |= SEC_RELOC;
7286 }
7287 newsize = trampoff + relax_info->workaround_size;
7288 }
7289
d3e454b9
AM
7290 if (htab->params->pic_fixup > 0)
7291 {
7292 picfixup_size -= relax_info->picfixup_size;
7293 if (picfixup_size != 0)
7294 relax_info->picfixup_size += picfixup_size;
7295 newsize += relax_info->picfixup_size;
7296 }
7297
7298 if (changes != 0 || picfixup_size != 0 || workaround_change)
5446cbdf
AM
7299 isec->size = newsize;
7300
25dbc73a
AM
7301 if (isymbuf != NULL
7302 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 7303 {
25dbc73a
AM
7304 if (! link_info->keep_memory)
7305 free (isymbuf);
252b5132 7306 else
25dbc73a
AM
7307 {
7308 /* Cache the symbols for elf_link_input_bfd. */
7309 symtab_hdr->contents = (unsigned char *) isymbuf;
7310 }
252b5132
RH
7311 }
7312
25dbc73a
AM
7313 if (contents != NULL
7314 && elf_section_data (isec)->this_hdr.contents != contents)
7315 {
53291d1f 7316 if (!changes && !link_info->keep_memory)
25dbc73a
AM
7317 free (contents);
7318 else
7319 {
7320 /* Cache the section contents for elf_link_input_bfd. */
7321 elf_section_data (isec)->this_hdr.contents = contents;
7322 }
7323 }
252b5132 7324
d3e454b9 7325 changes += picfixup_size;
9bc4e62b 7326 if (changes != 0)
25dbc73a 7327 {
9bc4e62b
NS
7328 /* Append sufficient NOP relocs so we can write out relocation
7329 information for the trampolines. */
d4730f92 7330 Elf_Internal_Shdr *rel_hdr;
9bc4e62b
NS
7331 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7332 * sizeof (*new_relocs));
7333 unsigned ix;
5b914448 7334
9bc4e62b
NS
7335 if (!new_relocs)
7336 goto error_return;
7337 memcpy (new_relocs, internal_relocs,
7338 isec->reloc_count * sizeof (*new_relocs));
7339 for (ix = changes; ix--;)
7340 {
7341 irel = new_relocs + ix + isec->reloc_count;
7342
7343 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7344 }
7345 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 7346 free (internal_relocs);
9bc4e62b
NS
7347 elf_section_data (isec)->relocs = new_relocs;
7348 isec->reloc_count += changes;
d4730f92
BS
7349 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7350 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
25dbc73a 7351 }
5446cbdf
AM
7352 else if (internal_relocs != NULL
7353 && elf_section_data (isec)->relocs != internal_relocs)
9bc4e62b 7354 free (internal_relocs);
252b5132 7355
5446cbdf 7356 *again = changes != 0 || workaround_change;
b34976b6 7357 return TRUE;
25dbc73a
AM
7358
7359 error_return:
d3e454b9 7360 while (branch_fixups != NULL)
5446cbdf 7361 {
d3e454b9
AM
7362 struct one_branch_fixup *f = branch_fixups;
7363 branch_fixups = branch_fixups->next;
5446cbdf
AM
7364 free (f);
7365 }
25dbc73a
AM
7366 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7367 free (isymbuf);
7368 if (contents != NULL
7369 && elf_section_data (isec)->this_hdr.contents != contents)
7370 free (contents);
7371 if (internal_relocs != NULL
7372 && elf_section_data (isec)->relocs != internal_relocs)
7373 free (internal_relocs);
7374 return FALSE;
252b5132 7375}
252b5132 7376\f
8a696751
AM
7377/* What to do when ld finds relocations against symbols defined in
7378 discarded sections. */
7379
7380static unsigned int
7381ppc_elf_action_discarded (asection *sec)
7382{
7383 if (strcmp (".fixup", sec->name) == 0)
7384 return 0;
7385
7386 if (strcmp (".got2", sec->name) == 0)
7387 return 0;
7388
7389 return _bfd_elf_default_action_discarded (sec);
7390}
c9a2f333 7391\f
25dbc73a 7392/* Fill in the address for a pointer generated in a linker section. */
252b5132 7393
25dbc73a 7394static bfd_vma
76750a2f 7395elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
7396 elf_linker_section_t *lsect,
7397 struct elf_link_hash_entry *h,
7398 bfd_vma relocation,
2bb04cf2 7399 const Elf_Internal_Rela *rel)
25dbc73a
AM
7400{
7401 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 7402
25dbc73a 7403 BFD_ASSERT (lsect != NULL);
252b5132 7404
25dbc73a 7405 if (h != NULL)
252b5132 7406 {
25dbc73a
AM
7407 /* Handle global symbol. */
7408 struct ppc_elf_link_hash_entry *eh;
252b5132 7409
25dbc73a 7410 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
7411 BFD_ASSERT (eh->elf.def_regular);
7412 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
7413 }
7414 else
7415 {
7416 /* Handle local symbol. */
7417 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 7418
0c8d6e5c 7419 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 7420 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
7421 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7422 }
252b5132 7423
76750a2f
AM
7424 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7425 rel->r_addend,
7426 lsect);
7427 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 7428
76750a2f
AM
7429 /* Offset will always be a multiple of four, so use the bottom bit
7430 as a "written" flag. */
7431 if ((linker_section_ptr->offset & 1) == 0)
7432 {
7433 bfd_put_32 (lsect->section->owner,
7434 relocation + linker_section_ptr->addend,
7435 lsect->section->contents + linker_section_ptr->offset);
7436 linker_section_ptr->offset += 1;
252b5132
RH
7437 }
7438
bd6c6e2b
AM
7439 relocation = (lsect->section->output_section->vma
7440 + lsect->section->output_offset
76750a2f 7441 + linker_section_ptr->offset - 1
bd6c6e2b 7442 - SYM_VAL (lsect->sym));
252b5132 7443
25dbc73a
AM
7444#ifdef DEBUG
7445 fprintf (stderr,
7446 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7447 lsect->name, (long) relocation, (long) relocation);
7448#endif
252b5132 7449
bd6c6e2b 7450 return relocation;
252b5132 7451}
25dbc73a 7452
e054468f
AM
7453#define PPC_LO(v) ((v) & 0xffff)
7454#define PPC_HI(v) (((v) >> 16) & 0xffff)
7455#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7456
7457static void
9e390558
AM
7458write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
7459 asection *plt_sec, unsigned char *p,
e054468f
AM
7460 struct bfd_link_info *info)
7461{
7462 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7463 bfd *output_bfd = info->output_bfd;
7464 bfd_vma plt;
9e390558
AM
7465 unsigned char *end = p + GLINK_ENTRY_SIZE (htab, h);
7466
7467 if (h != NULL
7468 && h == htab->tls_get_addr
7469 && !htab->params->no_tls_get_addr_opt)
7470 {
7471 bfd_put_32 (output_bfd, LWZ_11_3, p);
7472 p += 4;
7473 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
7474 p += 4;
7475 bfd_put_32 (output_bfd, MR_0_3, p);
7476 p += 4;
7477 bfd_put_32 (output_bfd, CMPWI_11_0, p);
7478 p += 4;
7479 bfd_put_32 (output_bfd, ADD_3_12_2, p);
7480 p += 4;
7481 bfd_put_32 (output_bfd, BEQLR, p);
7482 p += 4;
7483 bfd_put_32 (output_bfd, MR_3_0, p);
7484 p += 4;
7485 bfd_put_32 (output_bfd, NOP, p);
7486 p += 4;
7487 }
e054468f
AM
7488
7489 plt = ((ent->plt.offset & ~1)
7490 + plt_sec->output_section->vma
7491 + plt_sec->output_offset);
e054468f 7492
0e1862bb 7493 if (bfd_link_pic (info))
e054468f
AM
7494 {
7495 bfd_vma got = 0;
7496
7497 if (ent->addend >= 32768)
7498 got = (ent->addend
7499 + ent->sec->output_section->vma
7500 + ent->sec->output_offset);
7501 else if (htab->elf.hgot != NULL)
7502 got = SYM_VAL (htab->elf.hgot);
7503
7504 plt -= got;
7505
7506 if (plt + 0x8000 < 0x10000)
9e390558 7507 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
e054468f
AM
7508 else
7509 {
7510 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7511 p += 4;
7512 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
e054468f
AM
7513 }
7514 }
7515 else
7516 {
7517 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7518 p += 4;
7519 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
9e390558
AM
7520 }
7521 p += 4;
7522 bfd_put_32 (output_bfd, MTCTR_11, p);
7523 p += 4;
407aa07c
AM
7524 bfd_put_32 (output_bfd, BCTR, p);
7525 p += 4;
9e390558
AM
7526 while (p < end)
7527 {
7528 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
e054468f
AM
7529 p += 4;
7530 }
7531}
7532
bd6c6e2b
AM
7533/* Return true if symbol is defined statically. */
7534
7535static bfd_boolean
7536is_static_defined (struct elf_link_hash_entry *h)
7537{
7538 return ((h->root.type == bfd_link_hash_defined
7539 || h->root.type == bfd_link_hash_defweak)
7540 && h->root.u.def.section != NULL
7541 && h->root.u.def.section->output_section != NULL);
7542}
7543
2d0f3896
AM
7544/* If INSN is an opcode that may be used with an @tls operand, return
7545 the transformed insn for TLS optimisation, otherwise return 0. If
7546 REG is non-zero only match an insn with RB or RA equal to REG. */
7547
7548unsigned int
7549_bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7550{
7551 unsigned int rtra;
7552
7553 if ((insn & (0x3f << 26)) != 31 << 26)
7554 return 0;
7555
7556 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7557 rtra = insn & ((1 << 26) - (1 << 16));
7558 else if (((insn >> 16) & 0x1f) == reg)
7559 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7560 else
7561 return 0;
7562
7563 if ((insn & (0x3ff << 1)) == 266 << 1)
7564 /* add -> addi. */
7565 insn = 14 << 26;
7566 else if ((insn & (0x1f << 1)) == 23 << 1
7567 && ((insn & (0x1f << 6)) < 14 << 6
7568 || ((insn & (0x1f << 6)) >= 16 << 6
7569 && (insn & (0x1f << 6)) < 24 << 6)))
7570 /* load and store indexed -> dform. */
7571 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7572 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7573 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7574 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7575 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7576 /* lwax -> lwa. */
7577 insn = (58 << 26) | 2;
7578 else
7579 return 0;
7580 insn |= rtra;
7581 return insn;
7582}
7583
766bc656
AM
7584/* If INSN is an opcode that may be used with an @tprel operand, return
7585 the transformed insn for an undefined weak symbol, ie. with the
7586 thread pointer REG operand removed. Otherwise return 0. */
7587
7588unsigned int
7589_bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7590{
7591 if ((insn & (0x1f << 16)) == reg << 16
7592 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7593 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7594 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7595 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7596 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7597 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7598 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7599 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7600 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7601 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7602 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7603 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7604 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7605 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7606 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7607 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7608 && (insn & 3) != 1)
7609 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7610 && ((insn & 3) == 0 || (insn & 3) == 3))))
7611 {
7612 insn &= ~(0x1f << 16);
7613 }
7614 else if ((insn & (0x1f << 21)) == reg << 21
7615 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7616 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7617 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7618 {
7619 insn &= ~(0x1f << 21);
7620 insn |= (insn & (0x1f << 16)) << 5;
7621 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7622 insn -= 2 >> 26; /* convert to ori,oris */
7623 }
7624 else
7625 insn = 0;
7626 return insn;
7627}
7628
1fe532cf
AM
7629static bfd_boolean
7630is_insn_ds_form (unsigned int insn)
7631{
7632 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7633 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7634 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7635 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7636}
7637
7638static bfd_boolean
7639is_insn_dq_form (unsigned int insn)
7640{
a680de9a
PB
7641 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7642 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7643 && (insn & 3) == 1));
1fe532cf
AM
7644}
7645
252b5132
RH
7646/* The RELOCATE_SECTION function is called by the ELF backend linker
7647 to handle the relocations for a section.
7648
7649 The relocs are always passed as Rela structures; if the section
7650 actually uses Rel structures, the r_addend field will always be
7651 zero.
7652
7653 This function is responsible for adjust the section contents as
7654 necessary, and (if using Rela relocs and generating a
1049f94e 7655 relocatable output file) adjusting the reloc addend as
252b5132
RH
7656 necessary.
7657
7658 This function does not have to worry about setting the reloc
7659 address or the reloc symbol index.
7660
7661 LOCAL_SYMS is a pointer to the swapped in local symbols.
7662
7663 LOCAL_SECTIONS is an array giving the section in the input file
7664 corresponding to the st_shndx field of each local symbol.
7665
7666 The global hash table entry for the global symbols can be found
7667 via elf_sym_hashes (input_bfd).
7668
1049f94e 7669 When generating relocatable output, this function must handle
252b5132
RH
7670 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7671 going to be the section symbol corresponding to the output
7672 section, which means that the addend must be adjusted
7673 accordingly. */
7674
b34976b6 7675static bfd_boolean
55fd94b0
AM
7676ppc_elf_relocate_section (bfd *output_bfd,
7677 struct bfd_link_info *info,
7678 bfd *input_bfd,
7679 asection *input_section,
7680 bfd_byte *contents,
7681 Elf_Internal_Rela *relocs,
7682 Elf_Internal_Sym *local_syms,
7683 asection **local_sections)
252b5132 7684{
7619e7c7
AM
7685 Elf_Internal_Shdr *symtab_hdr;
7686 struct elf_link_hash_entry **sym_hashes;
7687 struct ppc_elf_link_hash_table *htab;
7688 Elf_Internal_Rela *rel;
c316a17c 7689 Elf_Internal_Rela *wrel;
7619e7c7
AM
7690 Elf_Internal_Rela *relend;
7691 Elf_Internal_Rela outrel;
f95f8542 7692 asection *got2;
252b5132 7693 bfd_vma *local_got_offsets;
b34976b6 7694 bfd_boolean ret = TRUE;
95f0d0d2 7695 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
3348747a 7696 bfd_boolean is_vxworks_tls;
d3e454b9
AM
7697 unsigned int picfixup_size = 0;
7698 struct ppc_elf_relax_info *relax_info = NULL;
b34976b6 7699
252b5132 7700#ifdef DEBUG
871b3ab2 7701 _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
d003868e
AM
7702 "%ld relocations%s",
7703 input_bfd, input_section,
7704 (long) input_section->reloc_count,
0e1862bb 7705 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
252b5132
RH
7706#endif
7707
a6aa5195
AM
7708 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7709
e47cd125 7710 /* Initialize howto table if not already done. */
8da6118f 7711 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
7712 ppc_elf_howto_init ();
7713
7619e7c7 7714 htab = ppc_elf_hash_table (info);
252b5132 7715 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 7716 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 7717 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
7718 /* We have to handle relocations in vxworks .tls_vars sections
7719 specially, because the dynamic loader is 'weird'. */
0e1862bb 7720 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
3348747a
NS
7721 && !strcmp (input_section->output_section->name,
7722 ".tls_vars"));
d3e454b9
AM
7723 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7724 relax_info = elf_section_data (input_section)->sec_info;
c316a17c 7725 rel = wrel = relocs;
7619e7c7 7726 relend = relocs + input_section->reloc_count;
c316a17c 7727 for (; rel < relend; wrel++, rel++)
252b5132 7728 {
7619e7c7
AM
7729 enum elf_ppc_reloc_type r_type;
7730 bfd_vma addend;
7731 bfd_reloc_status_type r;
7732 Elf_Internal_Sym *sym;
7733 asection *sec;
7734 struct elf_link_hash_entry *h;
7735 const char *sym_name;
252b5132
RH
7736 reloc_howto_type *howto;
7737 unsigned long r_symndx;
7738 bfd_vma relocation;
91d6fa6a 7739 bfd_vma branch_bit, from;
7619e7c7
AM
7740 bfd_boolean unresolved_reloc;
7741 bfd_boolean warned;
7742 unsigned int tls_type, tls_mask, tls_gd;
e054468f 7743 struct plt_entry **ifunc;
86c95733 7744 struct reloc_howto_struct alt_howto;
7619e7c7 7745
c316a17c 7746 again:
55fd94b0
AM
7747 r_type = ELF32_R_TYPE (rel->r_info);
7748 sym = NULL;
7749 sec = NULL;
7750 h = NULL;
7619e7c7
AM
7751 unresolved_reloc = FALSE;
7752 warned = FALSE;
252b5132 7753 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 7754
252b5132
RH
7755 if (r_symndx < symtab_hdr->sh_info)
7756 {
7757 sym = local_syms + r_symndx;
7758 sec = local_sections[r_symndx];
26c61ae5 7759 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 7760
8517fae7 7761 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
7762 }
7763 else
7764 {
62d887d4
L
7765 bfd_boolean ignored;
7766
b2a8e766
AM
7767 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7768 r_symndx, symtab_hdr, sym_hashes,
7769 h, sec, relocation,
62d887d4 7770 unresolved_reloc, warned, ignored);
9abc968f 7771
252b5132 7772 sym_name = h->root.root.string;
7619e7c7
AM
7773 }
7774
dbaa2011 7775 if (sec != NULL && discarded_section (sec))
ab96bf03
AM
7776 {
7777 /* For relocs against symbols from removed linkonce sections,
7778 or sections discarded by a linker script, we just want the
7779 section contents zeroed. Avoid any special processing. */
7780 howto = NULL;
7781 if (r_type < R_PPC_max)
7782 howto = ppc_elf_howto_table[r_type];
c316a17c
AM
7783
7784 _bfd_clear_contents (howto, input_bfd, input_section,
7785 contents + rel->r_offset);
7786 wrel->r_offset = rel->r_offset;
7787 wrel->r_info = 0;
7788 wrel->r_addend = 0;
7789
7790 /* For ld -r, remove relocations in debug sections against
dcd2b8a0 7791 symbols defined in discarded sections. Not done for
c316a17c
AM
7792 non-debug to preserve relocs in .eh_frame which the
7793 eh_frame editing code expects to be present. */
7794 if (bfd_link_relocatable (info)
7795 && (input_section->flags & SEC_DEBUGGING))
7796 wrel--;
7797
7798 continue;
ab96bf03
AM
7799 }
7800
0e1862bb 7801 if (bfd_link_relocatable (info))
ab96bf03
AM
7802 {
7803 if (got2 != NULL
7804 && r_type == R_PPC_PLTREL24
f75e0e33 7805 && rel->r_addend != 0)
ab96bf03
AM
7806 {
7807 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7808 addend specifies the GOT pointer offset within .got2. */
7809 rel->r_addend += got2->output_offset;
7810 }
53291d1f
AM
7811 if (r_type != R_PPC_RELAX_PLT
7812 && r_type != R_PPC_RELAX_PLTREL24
7813 && r_type != R_PPC_RELAX)
c316a17c 7814 goto copy_reloc;
ab96bf03
AM
7815 }
7816
7619e7c7
AM
7817 /* TLS optimizations. Replace instruction sequences and relocs
7818 based on information we collected in tls_optimize. We edit
7819 RELOCS so that --emit-relocs will output something sensible
7820 for the final instruction stream. */
7821 tls_mask = 0;
7822 tls_gd = 0;
727fc41e
AM
7823 if (h != NULL)
7824 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7825 else if (local_got_offsets != NULL)
7619e7c7 7826 {
e054468f 7827 struct plt_entry **local_plt;
727fc41e 7828 char *lgot_masks;
e054468f
AM
7829 local_plt
7830 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7831 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
727fc41e 7832 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM
7833 }
7834
7835 /* Ensure reloc mapping code below stays sane. */
7836 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7837 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7838 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7839 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7840 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7841 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7842 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7843 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7844 abort ();
7845 switch (r_type)
7846 {
7847 default:
7848 break;
7849
7850 case R_PPC_GOT_TPREL16:
7851 case R_PPC_GOT_TPREL16_LO:
e054468f 7852 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7853 && (tls_mask & TLS_TPREL) == 0)
7854 {
7855 bfd_vma insn;
91d6fa6a 7856
95f0d0d2 7857 insn = bfd_get_32 (input_bfd,
c316a17c 7858 contents + rel->r_offset - d_offset);
7619e7c7
AM
7859 insn &= 31 << 21;
7860 insn |= 0x3c020000; /* addis 0,2,0 */
95f0d0d2 7861 bfd_put_32 (input_bfd, insn,
c316a17c 7862 contents + rel->r_offset - d_offset);
7619e7c7
AM
7863 r_type = R_PPC_TPREL16_HA;
7864 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7865 }
7866 break;
7867
7868 case R_PPC_TLS:
e054468f 7869 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7870 && (tls_mask & TLS_TPREL) == 0)
7871 {
2d0f3896
AM
7872 bfd_vma insn;
7873
95f0d0d2 7874 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2d0f3896
AM
7875 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7876 if (insn == 0)
7619e7c7 7877 abort ();
95f0d0d2 7878 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7619e7c7
AM
7879 r_type = R_PPC_TPREL16_LO;
7880 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 7881
7619e7c7 7882 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
7883 PPC_TPREL16_LO which is at low-order half-word. */
7884 rel->r_offset += d_offset;
7619e7c7
AM
7885 }
7886 break;
7887
7888 case R_PPC_GOT_TLSGD16_HI:
7889 case R_PPC_GOT_TLSGD16_HA:
7890 tls_gd = TLS_TPRELGD;
e054468f 7891 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7619e7c7
AM
7892 goto tls_gdld_hi;
7893 break;
7894
7895 case R_PPC_GOT_TLSLD16_HI:
7896 case R_PPC_GOT_TLSLD16_HA:
e054468f 7897 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7
AM
7898 {
7899 tls_gdld_hi:
7900 if ((tls_mask & tls_gd) != 0)
7901 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7902 + R_PPC_GOT_TPREL16);
7903 else
7904 {
4fe5ca5b 7905 rel->r_offset -= d_offset;
95f0d0d2 7906 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7619e7c7
AM
7907 r_type = R_PPC_NONE;
7908 }
7909 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7910 }
7911 break;
7912
7913 case R_PPC_GOT_TLSGD16:
7914 case R_PPC_GOT_TLSGD16_LO:
7915 tls_gd = TLS_TPRELGD;
e054468f 7916 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 7917 goto tls_ldgd_opt;
7619e7c7
AM
7918 break;
7919
7920 case R_PPC_GOT_TLSLD16:
7921 case R_PPC_GOT_TLSLD16_LO:
e054468f 7922 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7 7923 {
3a71aa26 7924 unsigned int insn1, insn2;
b7fcf6f6 7925 bfd_vma offset;
7619e7c7 7926
b7fcf6f6 7927 tls_ldgd_opt:
727fc41e
AM
7928 offset = (bfd_vma) -1;
7929 /* If not using the newer R_PPC_TLSGD/LD to mark
7930 __tls_get_addr calls, we must trust that the call
7931 stays with its arg setup insns, ie. that the next
7932 reloc is the __tls_get_addr call associated with
7933 the current reloc. Edit both insns. */
7934 if (input_section->has_tls_get_addr_call
7935 && rel + 1 < relend
7936 && branch_reloc_hash_match (input_bfd, rel + 1,
7937 htab->tls_get_addr))
7938 offset = rel[1].r_offset;
b86ac8e3
AM
7939 /* We read the low GOT_TLS insn because we need to keep
7940 the destination reg. It may be something other than
7941 the usual r3, and moved to r3 before the call by
7942 intervening code. */
95f0d0d2 7943 insn1 = bfd_get_32 (input_bfd,
b86ac8e3 7944 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
7945 if ((tls_mask & tls_gd) != 0)
7946 {
7947 /* IE */
b86ac8e3 7948 insn1 &= (0x1f << 21) | (0x1f << 16);
b7fcf6f6 7949 insn1 |= 32 << 26; /* lwz */
727fc41e
AM
7950 if (offset != (bfd_vma) -1)
7951 {
f58d5a2d 7952 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e 7953 insn2 = 0x7c631214; /* add 3,3,2 */
95f0d0d2 7954 bfd_put_32 (input_bfd, insn2, contents + offset);
727fc41e 7955 }
b7fcf6f6
AM
7956 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7957 + R_PPC_GOT_TPREL16);
7958 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7959 }
7960 else
7961 {
7962 /* LE */
b86ac8e3
AM
7963 insn1 &= 0x1f << 21;
7964 insn1 |= 0x3c020000; /* addis r,2,0 */
7619e7c7
AM
7965 if (tls_gd == 0)
7966 {
b7fcf6f6 7967 /* Was an LD reloc. */
1d483afe
AM
7968 for (r_symndx = 0;
7969 r_symndx < symtab_hdr->sh_info;
7970 r_symndx++)
7971 if (local_sections[r_symndx] == sec)
7972 break;
7973 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 7974 r_symndx = STN_UNDEF;
b7fcf6f6 7975 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 7976 if (r_symndx != STN_UNDEF)
1d483afe
AM
7977 rel->r_addend -= (local_syms[r_symndx].st_value
7978 + sec->output_offset
7979 + sec->output_section->vma);
7619e7c7 7980 }
b7fcf6f6
AM
7981 r_type = R_PPC_TPREL16_HA;
7982 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM
7983 if (offset != (bfd_vma) -1)
7984 {
7985 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7986 rel[1].r_offset = offset + d_offset;
7987 rel[1].r_addend = rel->r_addend;
7988 insn2 = 0x38630000; /* addi 3,3,0 */
95f0d0d2 7989 bfd_put_32 (input_bfd, insn2, contents + offset);
727fc41e 7990 }
b7fcf6f6 7991 }
95f0d0d2 7992 bfd_put_32 (input_bfd, insn1,
b7fcf6f6 7993 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
7994 if (tls_gd == 0)
7995 {
7996 /* We changed the symbol on an LD reloc. Start over
7997 in order to get h, sym, sec etc. right. */
c316a17c 7998 goto again;
7619e7c7 7999 }
252b5132 8000 }
7619e7c7 8001 break;
727fc41e
AM
8002
8003 case R_PPC_TLSGD:
675e2809
AM
8004 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
8005 && rel + 1 < relend)
727fc41e
AM
8006 {
8007 unsigned int insn2;
8008 bfd_vma offset = rel->r_offset;
8009
8010 if ((tls_mask & TLS_TPRELGD) != 0)
8011 {
8012 /* IE */
8013 r_type = R_PPC_NONE;
8014 insn2 = 0x7c631214; /* add 3,3,2 */
8015 }
8016 else
8017 {
8018 /* LE */
8019 r_type = R_PPC_TPREL16_LO;
8020 rel->r_offset += d_offset;
8021 insn2 = 0x38630000; /* addi 3,3,0 */
8022 }
8023 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
95f0d0d2 8024 bfd_put_32 (input_bfd, insn2, contents + offset);
727fc41e
AM
8025 /* Zap the reloc on the _tls_get_addr call too. */
8026 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 8027 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
8028 }
8029 break;
8030
8031 case R_PPC_TLSLD:
675e2809
AM
8032 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
8033 && rel + 1 < relend)
727fc41e
AM
8034 {
8035 unsigned int insn2;
8036
8037 for (r_symndx = 0;
8038 r_symndx < symtab_hdr->sh_info;
8039 r_symndx++)
8040 if (local_sections[r_symndx] == sec)
8041 break;
8042 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 8043 r_symndx = STN_UNDEF;
727fc41e 8044 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 8045 if (r_symndx != STN_UNDEF)
727fc41e
AM
8046 rel->r_addend -= (local_syms[r_symndx].st_value
8047 + sec->output_offset
8048 + sec->output_section->vma);
8049
8050 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8051 rel->r_offset += d_offset;
8052 insn2 = 0x38630000; /* addi 3,3,0 */
95f0d0d2 8053 bfd_put_32 (input_bfd, insn2,
727fc41e
AM
8054 contents + rel->r_offset - d_offset);
8055 /* Zap the reloc on the _tls_get_addr call too. */
8056 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
f58d5a2d 8057 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
c316a17c 8058 goto again;
727fc41e
AM
8059 }
8060 break;
7619e7c7
AM
8061 }
8062
8063 /* Handle other relocations that tweak non-addend part of insn. */
8064 branch_bit = 0;
8065 switch (r_type)
8066 {
8067 default:
8068 break;
8069
8070 /* Branch taken prediction relocations. */
8071 case R_PPC_ADDR14_BRTAKEN:
8072 case R_PPC_REL14_BRTAKEN:
8073 branch_bit = BRANCH_PREDICT_BIT;
1a0670f3 8074 /* Fall through. */
7619e7c7 8075
4cc11e76 8076 /* Branch not taken prediction relocations. */
7619e7c7
AM
8077 case R_PPC_ADDR14_BRNTAKEN:
8078 case R_PPC_REL14_BRNTAKEN:
91d6fa6a
NC
8079 {
8080 bfd_vma insn;
7619e7c7 8081
95f0d0d2 8082 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
91d6fa6a
NC
8083 insn &= ~BRANCH_PREDICT_BIT;
8084 insn |= branch_bit;
7619e7c7 8085
91d6fa6a
NC
8086 from = (rel->r_offset
8087 + input_section->output_offset
8088 + input_section->output_section->vma);
7619e7c7 8089
91d6fa6a
NC
8090 /* Invert 'y' bit if not the default. */
8091 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8092 insn ^= BRANCH_PREDICT_BIT;
8093
95f0d0d2 8094 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
91d6fa6a
NC
8095 break;
8096 }
252b5132
RH
8097 }
8098
d3e454b9
AM
8099 if (ELIMINATE_COPY_RELOCS
8100 && h != NULL
8101 && !h->def_regular
8102 && h->protected_def
8103 && ppc_elf_hash_entry (h)->has_addr16_ha
8104 && ppc_elf_hash_entry (h)->has_addr16_lo
8105 && htab->params->pic_fixup > 0)
8106 {
8107 /* Convert lis;addi or lis;load/store accessing a protected
8108 variable defined in a shared library to PIC. */
8109 unsigned int insn;
8110
8111 if (r_type == R_PPC_ADDR16_HA)
8112 {
95f0d0d2 8113 insn = bfd_get_32 (input_bfd,
d3e454b9
AM
8114 contents + rel->r_offset - d_offset);
8115 if ((insn & (0x3f << 26)) == (15u << 26)
8116 && (insn & (0x1f << 16)) == 0 /* lis */)
8117 {
8118 bfd_byte *p;
8119 bfd_vma off;
8120 bfd_vma got_addr;
8121
8122 p = (contents + input_section->size
8123 - relax_info->workaround_size
8124 - relax_info->picfixup_size
8125 + picfixup_size);
8126 off = (p - contents) - (rel->r_offset - d_offset);
8127 if (off > 0x1fffffc || (off & 3) != 0)
8128 info->callbacks->einfo
174d0a74 8129 (_("%H: fixup branch overflow\n"),
d3e454b9
AM
8130 input_bfd, input_section, rel->r_offset);
8131
95f0d0d2 8132 bfd_put_32 (input_bfd, B | off,
d3e454b9 8133 contents + rel->r_offset - d_offset);
ce558b89
AM
8134 got_addr = (htab->elf.sgot->output_section->vma
8135 + htab->elf.sgot->output_offset
d3e454b9 8136 + (h->got.offset & ~1));
c316a17c
AM
8137 wrel->r_offset = (p - contents) + d_offset;
8138 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8139 wrel->r_addend = got_addr;
d3e454b9 8140 insn &= ~0xffff;
4aef7643 8141 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
95f0d0d2 8142 bfd_put_32 (input_bfd, insn, p);
d3e454b9
AM
8143
8144 /* Convert lis to lwz, loading address from GOT. */
8145 insn &= ~0xffff;
8146 insn ^= (32u ^ 15u) << 26;
8147 insn |= (insn & (0x1f << 21)) >> 5;
8148 insn |= got_addr & 0xffff;
95f0d0d2 8149 bfd_put_32 (input_bfd, insn, p + 4);
d3e454b9 8150
95f0d0d2 8151 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
d3e454b9
AM
8152 picfixup_size += 12;
8153
8154 /* Use one of the spare relocs, so --emit-relocs
8155 output is reasonable. */
8156 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
c316a17c
AM
8157 wrel++, rel++;
8158 rel->r_offset = wrel[-1].r_offset + 4;
d3e454b9 8159 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
c316a17c 8160 rel->r_addend = wrel[-1].r_addend;
d3e454b9
AM
8161
8162 /* Continue on as if we had a got reloc, to output
8163 dynamic reloc. */
8164 r_type = R_PPC_GOT16_LO;
8165 }
8166 else
2c4d9cbe 8167 _bfd_error_handler
695344c0 8168 /* xgettext:c-format */
2dcf00ce
AM
8169 (_("%pB(%pA+%#" PRIx64 "): error: "
8170 "%s with unexpected instruction %#x"),
8171 input_bfd, input_section, (uint64_t) rel->r_offset,
d3e454b9
AM
8172 "R_PPC_ADDR16_HA", insn);
8173 }
8174 else if (r_type == R_PPC_ADDR16_LO)
8175 {
95f0d0d2 8176 insn = bfd_get_32 (input_bfd,
d3e454b9
AM
8177 contents + rel->r_offset - d_offset);
8178 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8179 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8180 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8181 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8182 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8183 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8184 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8185 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8186 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8187 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8188 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8189 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8190 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8191 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8192 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8193 && (insn & 3) != 1)
8194 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8195 && ((insn & 3) == 0 || (insn & 3) == 3)))
8196 {
8197 /* Arrange to apply the reloc addend, if any. */
8198 relocation = 0;
8199 unresolved_reloc = FALSE;
8200 rel->r_info = ELF32_R_INFO (0, r_type);
8201 }
8202 else
2c4d9cbe 8203 _bfd_error_handler
695344c0 8204 /* xgettext:c-format */
2dcf00ce
AM
8205 (_("%pB(%pA+%#" PRIx64 "): error: "
8206 "%s with unexpected instruction %#x"),
8207 input_bfd, input_section, (uint64_t) rel->r_offset,
d3e454b9
AM
8208 "R_PPC_ADDR16_LO", insn);
8209 }
8210 }
8211
e054468f 8212 ifunc = NULL;
25f23106 8213 if (!htab->is_vxworks)
e054468f 8214 {
de972ffa
AM
8215 struct plt_entry *ent;
8216
e054468f
AM
8217 if (h != NULL)
8218 {
8219 if (h->type == STT_GNU_IFUNC)
8220 ifunc = &h->plt.plist;
8221 }
de972ffa
AM
8222 else if (local_got_offsets != NULL
8223 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
e054468f 8224 {
de972ffa 8225 struct plt_entry **local_plt;
e054468f 8226
de972ffa
AM
8227 local_plt = (struct plt_entry **) (local_got_offsets
8228 + symtab_hdr->sh_info);
8229 ifunc = local_plt + r_symndx;
e054468f 8230 }
e054468f 8231
de972ffa
AM
8232 ent = NULL;
8233 if (ifunc != NULL
0e1862bb 8234 && (!bfd_link_pic (info)
de972ffa
AM
8235 || is_branch_reloc (r_type)))
8236 {
8237 addend = 0;
0e1862bb 8238 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
de972ffa
AM
8239 addend = rel->r_addend;
8240 ent = find_plt_ent (ifunc, got2, addend);
8241 }
8242 if (ent != NULL)
8243 {
888a7fc3
AM
8244 if (bfd_link_pic (info)
8245 && ent->sec != got2
8246 && htab->plt_type != PLT_NEW
8247 && (!htab->elf.dynamic_sections_created
8248 || h == NULL
8249 || h->dynindx == -1))
8250 {
8251 /* Uh oh, we are going to create a pic glink stub
8252 for an ifunc (here for h == NULL and later in
8253 finish_dynamic_symbol for h != NULL), and
8254 apparently are using code compiled with
8255 -mbss-plt. The difficulty is that -mbss-plt code
8256 gives no indication via a magic PLTREL24 addend
8257 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8258 is pointing into a .got2 section (and how far
8259 into .got2). */
8260 info->callbacks->einfo
695344c0 8261 /* xgettext:c-format */
174d0a74 8262 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
888a7fc3
AM
8263 input_bfd, input_section, rel->r_offset, sym_name);
8264 }
e054468f
AM
8265 if (h == NULL && (ent->plt.offset & 1) == 0)
8266 {
8267 Elf_Internal_Rela rela;
8268 bfd_byte *loc;
8269
ce558b89
AM
8270 rela.r_offset = (htab->elf.iplt->output_section->vma
8271 + htab->elf.iplt->output_offset
e054468f
AM
8272 + ent->plt.offset);
8273 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8274 rela.r_addend = relocation;
ce558b89
AM
8275 loc = htab->elf.irelplt->contents;
8276 loc += (htab->elf.irelplt->reloc_count++
25f23106 8277 * sizeof (Elf32_External_Rela));
e054468f 8278 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
82e66161 8279 htab->local_ifunc_resolver = 1;
e054468f
AM
8280
8281 ent->plt.offset |= 1;
8282 }
8283 if (h == NULL && (ent->glink_offset & 1) == 0)
8284 {
a7f2871e
AM
8285 unsigned char *p = ((unsigned char *) htab->glink->contents
8286 + ent->glink_offset);
9e390558
AM
8287
8288 write_glink_stub (NULL, ent, htab->elf.iplt, p, info);
e054468f
AM
8289 ent->glink_offset |= 1;
8290 }
8291
8292 unresolved_reloc = FALSE;
8293 if (htab->plt_type == PLT_NEW
8294 || !htab->elf.dynamic_sections_created
c7e17e05
AM
8295 || h == NULL
8296 || h->dynindx == -1)
e054468f
AM
8297 relocation = (htab->glink->output_section->vma
8298 + htab->glink->output_offset
8299 + (ent->glink_offset & ~1));
8300 else
ce558b89
AM
8301 relocation = (htab->elf.splt->output_section->vma
8302 + htab->elf.splt->output_offset
e054468f
AM
8303 + ent->plt.offset);
8304 }
8305 }
8306
7619e7c7 8307 addend = rel->r_addend;
7619e7c7 8308 howto = NULL;
55fd94b0
AM
8309 if (r_type < R_PPC_max)
8310 howto = ppc_elf_howto_table[r_type];
9a23f96e
AM
8311
8312 switch (r_type)
8313 {
8314 default:
8315 break;
8316
8317 case R_PPC_TPREL16_HA:
8318 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8319 {
8320 bfd_byte *p = contents + (rel->r_offset & ~3);
8321 unsigned int insn = bfd_get_32 (input_bfd, p);
8322 if ((insn & ((0x3f << 26) | 0x1f << 16))
8323 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8324 /* xgettext:c-format */
8325 info->callbacks->minfo
8326 (_("%H: warning: %s unexpected insn %#x.\n"),
8327 input_bfd, input_section, rel->r_offset, howto->name, insn);
8328 else
8329 bfd_put_32 (input_bfd, NOP, p);
8330 }
8331 break;
8332
8333 case R_PPC_TPREL16_LO:
8334 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8335 {
8336 bfd_byte *p = contents + (rel->r_offset & ~3);
8337 unsigned int insn = bfd_get_32 (input_bfd, p);
8338 insn &= ~(0x1f << 16);
8339 insn |= 2 << 16;
8340 bfd_put_32 (input_bfd, insn, p);
8341 }
8342 break;
8343 }
8344
8345 tls_type = 0;
7619e7c7 8346 switch (r_type)
252b5132
RH
8347 {
8348 default:
cf97bcb0
AM
8349 /* xgettext:c-format */
8350 _bfd_error_handler (_("%pB: %s unsupported"),
8351 input_bfd, howto->name);
252b5132
RH
8352
8353 bfd_set_error (bfd_error_bad_value);
b34976b6 8354 ret = FALSE;
c316a17c 8355 goto copy_reloc;
252b5132 8356
7619e7c7
AM
8357 case R_PPC_NONE:
8358 case R_PPC_TLS:
727fc41e
AM
8359 case R_PPC_TLSGD:
8360 case R_PPC_TLSLD:
7619e7c7
AM
8361 case R_PPC_EMB_MRKREF:
8362 case R_PPC_GNU_VTINHERIT:
8363 case R_PPC_GNU_VTENTRY:
c316a17c 8364 goto copy_reloc;
7595d193 8365
7619e7c7
AM
8366 /* GOT16 relocations. Like an ADDR16 using the symbol's
8367 address in the GOT as relocation value instead of the
8368 symbol's value itself. Also, create a GOT entry for the
8369 symbol and put the symbol value there. */
8370 case R_PPC_GOT_TLSGD16:
8371 case R_PPC_GOT_TLSGD16_LO:
8372 case R_PPC_GOT_TLSGD16_HI:
8373 case R_PPC_GOT_TLSGD16_HA:
8374 tls_type = TLS_TLS | TLS_GD;
8375 goto dogot;
8376
8377 case R_PPC_GOT_TLSLD16:
8378 case R_PPC_GOT_TLSLD16_LO:
8379 case R_PPC_GOT_TLSLD16_HI:
8380 case R_PPC_GOT_TLSLD16_HA:
8381 tls_type = TLS_TLS | TLS_LD;
8382 goto dogot;
8383
8384 case R_PPC_GOT_TPREL16:
8385 case R_PPC_GOT_TPREL16_LO:
8386 case R_PPC_GOT_TPREL16_HI:
8387 case R_PPC_GOT_TPREL16_HA:
8388 tls_type = TLS_TLS | TLS_TPREL;
8389 goto dogot;
8390
8391 case R_PPC_GOT_DTPREL16:
8392 case R_PPC_GOT_DTPREL16_LO:
8393 case R_PPC_GOT_DTPREL16_HI:
8394 case R_PPC_GOT_DTPREL16_HA:
8395 tls_type = TLS_TLS | TLS_DTPREL;
8396 goto dogot;
8397
8398 case R_PPC_GOT16:
8399 case R_PPC_GOT16_LO:
8400 case R_PPC_GOT16_HI:
8401 case R_PPC_GOT16_HA:
727fc41e 8402 tls_mask = 0;
7619e7c7
AM
8403 dogot:
8404 {
8405 /* Relocation is to the entry for this symbol in the global
8406 offset table. */
8407 bfd_vma off;
8408 bfd_vma *offp;
8409 unsigned long indx;
8410
ce558b89 8411 if (htab->elf.sgot == NULL)
7619e7c7
AM
8412 abort ();
8413
8414 indx = 0;
8415 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 8416 && (h == NULL
f5385ebf 8417 || !h->def_dynamic))
7619e7c7
AM
8418 offp = &htab->tlsld_got.offset;
8419 else if (h != NULL)
8420 {
f0158f44
AM
8421 if (!htab->elf.dynamic_sections_created
8422 || h->dynindx == -1
8423 || SYMBOL_REFERENCES_LOCAL (info, h)
21d68fcd 8424 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
7619e7c7
AM
8425 /* This is actually a static link, or it is a
8426 -Bsymbolic link and the symbol is defined
8427 locally, or the symbol was forced to be local
8428 because of a version file. */
8429 ;
8430 else
8431 {
8432 indx = h->dynindx;
8433 unresolved_reloc = FALSE;
8434 }
8435 offp = &h->got.offset;
8436 }
8437 else
8438 {
8439 if (local_got_offsets == NULL)
8440 abort ();
8441 offp = &local_got_offsets[r_symndx];
8442 }
8443
8444 /* The offset must always be a multiple of 4. We use the
8445 least significant bit to record whether we have already
8446 processed this entry. */
8447 off = *offp;
8448 if ((off & 1) != 0)
8449 off &= ~1;
8450 else
8451 {
70bccea4
AM
8452 unsigned int tls_m = (tls_mask
8453 & (TLS_LD | TLS_GD | TLS_DTPREL
8454 | TLS_TPREL | TLS_TPRELGD));
8455
8456 if (offp == &htab->tlsld_got.offset)
8457 tls_m = TLS_LD;
8458 else if (h == NULL
f5385ebf 8459 || !h->def_dynamic)
70bccea4
AM
8460 tls_m &= ~TLS_LD;
8461
8462 /* We might have multiple got entries for this sym.
8463 Initialize them all. */
8464 do
7619e7c7 8465 {
70bccea4
AM
8466 int tls_ty = 0;
8467
8468 if ((tls_m & TLS_LD) != 0)
7619e7c7 8469 {
70bccea4
AM
8470 tls_ty = TLS_TLS | TLS_LD;
8471 tls_m &= ~TLS_LD;
8472 }
8473 else if ((tls_m & TLS_GD) != 0)
8474 {
8475 tls_ty = TLS_TLS | TLS_GD;
8476 tls_m &= ~TLS_GD;
8477 }
8478 else if ((tls_m & TLS_DTPREL) != 0)
8479 {
8480 tls_ty = TLS_TLS | TLS_DTPREL;
8481 tls_m &= ~TLS_DTPREL;
8482 }
8483 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8484 {
8485 tls_ty = TLS_TLS | TLS_TPREL;
8486 tls_m = 0;
7619e7c7 8487 }
7619e7c7 8488
70bccea4 8489 /* Generate relocs for the dynamic linker. */
f0158f44
AM
8490 if (indx != 0
8491 || (bfd_link_pic (info)
8492 && (h == NULL
21d68fcd 8493 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
f15d0b54
AM
8494 || offp == &htab->tlsld_got.offset)
8495 && !(tls_ty == (TLS_TLS | TLS_TPREL)
8496 && bfd_link_executable (info)
8497 && SYMBOL_REFERENCES_LOCAL (info, h))))
7619e7c7 8498 {
ce558b89 8499 asection *rsec = htab->elf.srelgot;
91d6fa6a 8500 bfd_byte * loc;
91e21fb7 8501
0bed072f 8502 if (ifunc != NULL)
82e66161
AM
8503 {
8504 rsec = htab->elf.irelplt;
8505 if (indx == 0)
8506 htab->local_ifunc_resolver = 1;
8507 else if (is_static_defined (h))
8508 htab->maybe_local_ifunc_resolver = 1;
8509 }
ce558b89
AM
8510 outrel.r_offset = (htab->elf.sgot->output_section->vma
8511 + htab->elf.sgot->output_offset
70bccea4 8512 + off);
e515b051 8513 outrel.r_addend = 0;
70bccea4
AM
8514 if (tls_ty & (TLS_LD | TLS_GD))
8515 {
8516 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
8517 if (tls_ty == (TLS_TLS | TLS_GD))
8518 {
25f23106
AM
8519 loc = rsec->contents;
8520 loc += (rsec->reloc_count++
70bccea4
AM
8521 * sizeof (Elf32_External_Rela));
8522 bfd_elf32_swap_reloca_out (output_bfd,
8523 &outrel, loc);
e515b051 8524 outrel.r_offset += 4;
70bccea4
AM
8525 outrel.r_info
8526 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
8527 }
8528 }
8529 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8530 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8531 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8532 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
25f23106 8533 else if (indx != 0)
70bccea4 8534 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
25f23106
AM
8535 else if (ifunc != NULL)
8536 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8537 else
8538 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
d6e14abc 8539 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM
8540 {
8541 outrel.r_addend += relocation;
8542 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
989f9879
AM
8543 {
8544 if (htab->elf.tls_sec == NULL)
8545 outrel.r_addend = 0;
8546 else
8547 outrel.r_addend -= htab->elf.tls_sec->vma;
8548 }
e515b051 8549 }
25f23106
AM
8550 loc = rsec->contents;
8551 loc += (rsec->reloc_count++
70bccea4
AM
8552 * sizeof (Elf32_External_Rela));
8553 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
8554 }
8555
70bccea4
AM
8556 /* Init the .got section contents if we're not
8557 emitting a reloc. */
8558 else
7619e7c7 8559 {
70bccea4
AM
8560 bfd_vma value = relocation;
8561
f0158f44 8562 if (tls_ty != 0)
70bccea4 8563 {
989f9879
AM
8564 if (htab->elf.tls_sec == NULL)
8565 value = 0;
8566 else
8567 {
f0158f44
AM
8568 if (tls_ty & TLS_LD)
8569 value = 0;
8570 else
8571 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
676ee2b5 8572 if (tls_ty & TLS_TPREL)
989f9879
AM
8573 value += DTP_OFFSET - TP_OFFSET;
8574 }
70bccea4 8575
f0158f44 8576 if (tls_ty & (TLS_LD | TLS_GD))
7b609f53 8577 {
95f0d0d2 8578 bfd_put_32 (input_bfd, value,
ce558b89 8579 htab->elf.sgot->contents + off + 4);
676ee2b5 8580 value = 1;
7b609f53 8581 }
70bccea4 8582 }
95f0d0d2 8583 bfd_put_32 (input_bfd, value,
ce558b89 8584 htab->elf.sgot->contents + off);
7619e7c7 8585 }
70bccea4
AM
8586
8587 off += 4;
8588 if (tls_ty & (TLS_LD | TLS_GD))
8589 off += 4;
7619e7c7 8590 }
70bccea4
AM
8591 while (tls_m != 0);
8592
8593 off = *offp;
8594 *offp = off | 1;
7619e7c7
AM
8595 }
8596
8597 if (off >= (bfd_vma) -2)
8598 abort ();
8599
70bccea4
AM
8600 if ((tls_type & TLS_TLS) != 0)
8601 {
8602 if (tls_type != (TLS_TLS | TLS_LD))
8603 {
8604 if ((tls_mask & TLS_LD) != 0
8605 && !(h == NULL
f5385ebf 8606 || !h->def_dynamic))
70bccea4
AM
8607 off += 8;
8608 if (tls_type != (TLS_TLS | TLS_GD))
8609 {
8610 if ((tls_mask & TLS_GD) != 0)
8611 off += 8;
8612 if (tls_type != (TLS_TLS | TLS_DTPREL))
8613 {
8614 if ((tls_mask & TLS_DTPREL) != 0)
8615 off += 4;
8616 }
8617 }
8618 }
8619 }
8620
d3e454b9
AM
8621 /* If here for a picfixup, we're done. */
8622 if (r_type != ELF32_R_TYPE (rel->r_info))
c316a17c 8623 goto copy_reloc;
d3e454b9 8624
ce558b89
AM
8625 relocation = (htab->elf.sgot->output_section->vma
8626 + htab->elf.sgot->output_offset
e87d4038
AM
8627 + off
8628 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
8629
8630 /* Addends on got relocations don't make much sense.
8631 x+off@got is actually x@got+off, and since the got is
8632 generated by a hash table traversal, the value in the
8633 got at entry m+n bears little relation to the entry m. */
8634 if (addend != 0)
25f53a85 8635 info->callbacks->einfo
695344c0 8636 /* xgettext:c-format */
174d0a74 8637 (_("%H: non-zero addend on %s reloc against `%s'\n"),
25f53a85 8638 input_bfd, input_section, rel->r_offset,
7b609f53 8639 howto->name,
7619e7c7
AM
8640 sym_name);
8641 }
86c95733 8642 break;
7619e7c7 8643
86c95733 8644 /* Relocations that need no special processing. */
7619e7c7 8645 case R_PPC_LOCAL24PC:
252b5132
RH
8646 /* It makes no sense to point a local relocation
8647 at a symbol not in this object. */
7b609f53 8648 if (unresolved_reloc)
252b5132 8649 {
1a72702b
AM
8650 (*info->callbacks->undefined_symbol) (info,
8651 h->root.root.string,
8652 input_bfd,
8653 input_section,
8654 rel->r_offset,
8655 TRUE);
c316a17c 8656 goto copy_reloc;
252b5132 8657 }
888a7fc3
AM
8658 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8659 {
8660 /* @local on an ifunc does not really make sense since
8661 the ifunc resolver can take you anywhere. More
8662 seriously, calls to ifuncs must go through a plt call
8663 stub, and for pic the plt call stubs uses r30 to
8664 access the PLT. The problem is that a call that is
8665 local won't have the +32k reloc addend trick marking
8666 -fPIC code, so the linker won't know whether r30 is
8667 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
695344c0 8668 /* xgettext:c-format */
174d0a74 8669 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
888a7fc3
AM
8670 input_bfd, input_section, rel->r_offset,
8671 h->root.root.string);
8672 }
252b5132
RH
8673 break;
8674
7619e7c7
AM
8675 case R_PPC_DTPREL16:
8676 case R_PPC_DTPREL16_LO:
8677 case R_PPC_DTPREL16_HI:
8678 case R_PPC_DTPREL16_HA:
989f9879
AM
8679 if (htab->elf.tls_sec != NULL)
8680 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8681 break;
8682
70bccea4
AM
8683 /* Relocations that may need to be propagated if this is a shared
8684 object. */
7619e7c7
AM
8685 case R_PPC_TPREL16:
8686 case R_PPC_TPREL16_LO:
8687 case R_PPC_TPREL16_HI:
8688 case R_PPC_TPREL16_HA:
766bc656
AM
8689 if (h != NULL
8690 && h->root.type == bfd_link_hash_undefweak
8691 && h->dynindx == -1)
8692 {
8693 /* Make this relocation against an undefined weak symbol
8694 resolve to zero. This is really just a tweak, since
8695 code using weak externs ought to check that they are
8696 defined before using them. */
8697 bfd_byte *p = contents + rel->r_offset - d_offset;
95f0d0d2 8698 unsigned int insn = bfd_get_32 (input_bfd, p);
766bc656
AM
8699 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8700 if (insn != 0)
95f0d0d2 8701 bfd_put_32 (input_bfd, insn, p);
766bc656
AM
8702 break;
8703 }
989f9879
AM
8704 if (htab->elf.tls_sec != NULL)
8705 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7 8706 /* The TPREL16 relocs shouldn't really be used in shared
7c8bbca5
AM
8707 libs or with non-local symbols as that will result in
8708 DT_TEXTREL being set, but support them anyway. */
7619e7c7
AM
8709 goto dodyn;
8710
8711 case R_PPC_TPREL32:
989f9879
AM
8712 if (htab->elf.tls_sec != NULL)
8713 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8714 goto dodyn;
8715
8716 case R_PPC_DTPREL32:
989f9879
AM
8717 if (htab->elf.tls_sec != NULL)
8718 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8719 goto dodyn;
8720
e515b051
AM
8721 case R_PPC_DTPMOD32:
8722 relocation = 1;
8723 addend = 0;
8724 goto dodyn;
8725
d7128ce4
AM
8726 case R_PPC_REL16:
8727 case R_PPC_REL16_LO:
8728 case R_PPC_REL16_HI:
8729 case R_PPC_REL16_HA:
a680de9a 8730 case R_PPC_REL16DX_HA:
d7128ce4
AM
8731 break;
8732
7619e7c7 8733 case R_PPC_REL32:
625af618
AM
8734 if (h == NULL || h == htab->elf.hgot)
8735 break;
8736 /* fall through */
8737
8738 case R_PPC_ADDR32:
8739 case R_PPC_ADDR16:
8740 case R_PPC_ADDR16_LO:
8741 case R_PPC_ADDR16_HI:
8742 case R_PPC_ADDR16_HA:
8743 case R_PPC_UADDR32:
8744 case R_PPC_UADDR16:
8745 goto dodyn;
8746
b9c361e0
JL
8747 case R_PPC_VLE_REL8:
8748 case R_PPC_VLE_REL15:
8749 case R_PPC_VLE_REL24:
625af618 8750 case R_PPC_REL24:
7619e7c7
AM
8751 case R_PPC_REL14:
8752 case R_PPC_REL14_BRTAKEN:
8753 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
8754 /* If these relocations are not to a named symbol, they can be
8755 handled right here, no need to bother the dynamic linker. */
89200bf8 8756 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 8757 || h == htab->elf.hgot)
252b5132 8758 break;
70bccea4 8759 /* fall through */
252b5132 8760
7619e7c7 8761 case R_PPC_ADDR24:
7619e7c7
AM
8762 case R_PPC_ADDR14:
8763 case R_PPC_ADDR14_BRTAKEN:
8764 case R_PPC_ADDR14_BRNTAKEN:
0e1862bb 8765 if (h != NULL && !bfd_link_pic (info))
625af618
AM
8766 break;
8767 /* fall through */
8768
7619e7c7 8769 dodyn:
3348747a
NS
8770 if ((input_section->flags & SEC_ALLOC) == 0
8771 || is_vxworks_tls)
c87b5a93 8772 break;
c87b5a93 8773
287c7eaf
AM
8774 if (bfd_link_pic (info)
8775 ? ((h == NULL
8776 || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
8777 && ((h != NULL && pc_dynrelocs (h))
8778 || must_be_dyn_reloc (info, r_type)))
8779 : (h != NULL
8780 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
252b5132 8781 {
0bb2d96a 8782 int skip;
f95f8542
AM
8783 bfd_byte *loc;
8784 asection *sreloc;
82e66161
AM
8785 long indx = 0;
8786
252b5132 8787#ifdef DEBUG
55fd94b0
AM
8788 fprintf (stderr, "ppc_elf_relocate_section needs to "
8789 "create relocation for %s\n",
70bccea4
AM
8790 (h && h->root.root.string
8791 ? h->root.root.string : "<unknown>"));
252b5132
RH
8792#endif
8793
8794 /* When generating a shared object, these relocations
70bccea4
AM
8795 are copied into the output file to be resolved at run
8796 time. */
0bb2d96a 8797 skip = 0;
5b914448
AM
8798 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8799 input_section,
8800 rel->r_offset);
0bb2d96a
JJ
8801 if (outrel.r_offset == (bfd_vma) -1
8802 || outrel.r_offset == (bfd_vma) -2)
8803 skip = (int) outrel.r_offset;
252b5132
RH
8804 outrel.r_offset += (input_section->output_section->vma
8805 + input_section->output_offset);
8806
8807 if (skip)
8808 memset (&outrel, 0, sizeof outrel);
21d68fcd 8809 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 8810 {
82e66161
AM
8811 indx = h->dynindx;
8812 BFD_ASSERT (indx != -1);
7619e7c7 8813 unresolved_reloc = FALSE;
82e66161 8814 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH
8815 outrel.r_addend = rel->r_addend;
8816 }
8817 else
8818 {
47388f4c
AM
8819 outrel.r_addend = relocation + rel->r_addend;
8820
25f23106 8821 if (r_type != R_PPC_ADDR32)
252b5132 8822 {
25f23106
AM
8823 if (ifunc != NULL)
8824 {
8825 /* If we get here when building a static
8826 executable, then the libc startup function
8827 responsible for applying indirect function
8828 relocations is going to complain about
8829 the reloc type.
8830 If we get here when building a dynamic
8831 executable, it will be because we have
8832 a text relocation. The dynamic loader
8833 will set the text segment writable and
8834 non-executable to apply text relocations.
8835 So we'll segfault when trying to run the
8836 indirection function to resolve the reloc. */
25f53a85 8837 info->callbacks->einfo
695344c0 8838 /* xgettext:c-format */
174d0a74 8839 (_("%H: relocation %s for indirect "
25f53a85
AM
8840 "function %s unsupported\n"),
8841 input_bfd, input_section, rel->r_offset,
25f23106
AM
8842 howto->name,
8843 sym_name);
8844 ret = FALSE;
8845 }
cf35638d 8846 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
89200bf8 8847 ;
252b5132
RH
8848 else if (sec == NULL || sec->owner == NULL)
8849 {
8850 bfd_set_error (bfd_error_bad_value);
89200bf8 8851 ret = FALSE;
252b5132
RH
8852 }
8853 else
8854 {
8855 asection *osec;
8856
47388f4c
AM
8857 /* We are turning this relocation into one
8858 against a section symbol. It would be
8859 proper to subtract the symbol's value,
8860 osec->vma, from the emitted reloc addend,
25f23106
AM
8861 but ld.so expects buggy relocs.
8862 FIXME: Why not always use a zero index? */
252b5132
RH
8863 osec = sec->output_section;
8864 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
8865 if (indx == 0)
8866 {
8867 osec = htab->elf.text_index_section;
8868 indx = elf_section_data (osec)->dynindx;
8869 }
8870 BFD_ASSERT (indx != 0);
252b5132 8871#ifdef DEBUG
74541ad4 8872 if (indx == 0)
e460dd0d 8873 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
8874 indx, osec->name, osec->flags,
8875 h->root.root.string);
252b5132
RH
8876#endif
8877 }
8878
8879 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132 8880 }
25f23106
AM
8881 else if (ifunc != NULL)
8882 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8883 else
8884 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
8885 }
8886
82e66161
AM
8887 sreloc = elf_section_data (input_section)->sreloc;
8888 if (ifunc)
8889 {
8890 sreloc = htab->elf.irelplt;
8891 if (indx == 0)
8892 htab->local_ifunc_resolver = 1;
8893 else if (is_static_defined (h))
8894 htab->maybe_local_ifunc_resolver = 1;
8895 }
8896 if (sreloc == NULL)
8897 return FALSE;
8898
947216bf
AM
8899 loc = sreloc->contents;
8900 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8901 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 8902
2243deae 8903 if (skip == -1)
c316a17c 8904 goto copy_reloc;
2243deae 8905
f0158f44
AM
8906 /* This reloc will be computed at runtime. Clear the memory
8907 so that it contains a predictable value for prelink. */
8908 if (!skip)
2243deae
L
8909 {
8910 relocation = howto->pc_relative ? outrel.r_offset : 0;
8911 addend = 0;
8912 break;
8913 }
252b5132 8914 }
252b5132
RH
8915 break;
8916
32af9f6e
AM
8917 case R_PPC_RELAX_PLT:
8918 case R_PPC_RELAX_PLTREL24:
de972ffa
AM
8919 if (h != NULL)
8920 {
32af9f6e
AM
8921 struct plt_entry *ent;
8922 bfd_vma got2_addend = 0;
8923
8924 if (r_type == R_PPC_RELAX_PLTREL24)
8925 {
0e1862bb 8926 if (bfd_link_pic (info))
32af9f6e
AM
8927 got2_addend = addend;
8928 addend = 0;
8929 }
8930 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
de972ffa
AM
8931 if (htab->plt_type == PLT_NEW)
8932 relocation = (htab->glink->output_section->vma
8933 + htab->glink->output_offset
8934 + ent->glink_offset);
8935 else
ce558b89
AM
8936 relocation = (htab->elf.splt->output_section->vma
8937 + htab->elf.splt->output_offset
de972ffa
AM
8938 + ent->plt.offset);
8939 }
1a0670f3 8940 /* Fall through. */
b4a38de6 8941
32af9f6e 8942 case R_PPC_RELAX:
9abc968f 8943 {
53291d1f
AM
8944 const int *stub;
8945 size_t size;
8946 size_t insn_offset = rel->r_offset;
8947 unsigned int insn;
9abc968f 8948
0e1862bb 8949 if (bfd_link_pic (info))
53291d1f
AM
8950 {
8951 relocation -= (input_section->output_section->vma
8952 + input_section->output_offset
8953 + rel->r_offset - 4);
8954 stub = shared_stub_entry;
95f0d0d2
AM
8955 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8956 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8957 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
53291d1f
AM
8958 stub += 3;
8959 size = ARRAY_SIZE (shared_stub_entry) - 3;
8960 }
8961 else
8962 {
8963 stub = stub_entry;
8964 size = ARRAY_SIZE (stub_entry);
8965 }
9abc968f 8966
9abc968f 8967 relocation += addend;
0e1862bb 8968 if (bfd_link_relocatable (info))
53291d1f
AM
8969 relocation = 0;
8970
8971 /* First insn is HA, second is LO. */
8972 insn = *stub++;
8973 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
95f0d0d2 8974 bfd_put_32 (input_bfd, insn, contents + insn_offset);
53291d1f
AM
8975 insn_offset += 4;
8976
8977 insn = *stub++;
8978 insn |= relocation & 0xffff;
95f0d0d2 8979 bfd_put_32 (input_bfd, insn, contents + insn_offset);
53291d1f
AM
8980 insn_offset += 4;
8981 size -= 2;
8982
8983 while (size != 0)
8984 {
8985 insn = *stub++;
8986 --size;
95f0d0d2 8987 bfd_put_32 (input_bfd, insn, contents + insn_offset);
53291d1f
AM
8988 insn_offset += 4;
8989 }
9bc4e62b
NS
8990
8991 /* Rewrite the reloc and convert one of the trailing nop
8992 relocs to describe this relocation. */
8993 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8994 /* The relocs are at the bottom 2 bytes */
c316a17c
AM
8995 wrel->r_offset = rel->r_offset + d_offset;
8996 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8997 wrel->r_addend = rel->r_addend;
8998 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8999 wrel++, rel++;
9000 wrel->r_offset += 4;
9001 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9abc968f 9002 }
8517fae7 9003 continue;
deaaf2f3 9004
70bccea4 9005 /* Indirect .sdata relocation. */
7619e7c7 9006 case R_PPC_EMB_SDAI16:
c9a2f333 9007 BFD_ASSERT (htab->sdata[0].section != NULL);
bd6c6e2b
AM
9008 if (!is_static_defined (htab->sdata[0].sym))
9009 {
9010 unresolved_reloc = TRUE;
9011 break;
9012 }
7619e7c7 9013 relocation
76750a2f
AM
9014 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9015 h, relocation, rel);
bd6c6e2b 9016 addend = 0;
252b5132
RH
9017 break;
9018
70bccea4 9019 /* Indirect .sdata2 relocation. */
7619e7c7 9020 case R_PPC_EMB_SDA2I16:
c9a2f333 9021 BFD_ASSERT (htab->sdata[1].section != NULL);
bd6c6e2b
AM
9022 if (!is_static_defined (htab->sdata[1].sym))
9023 {
9024 unresolved_reloc = TRUE;
9025 break;
9026 }
7619e7c7 9027 relocation
76750a2f
AM
9028 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9029 h, relocation, rel);
bd6c6e2b 9030 addend = 0;
252b5132
RH
9031 break;
9032
70bccea4
AM
9033 /* Handle the TOC16 reloc. We want to use the offset within the .got
9034 section, not the actual VMA. This is appropriate when generating
9035 an embedded ELF object, for which the .got section acts like the
9036 AIX .toc section. */
7619e7c7 9037 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
9038 if (sec == NULL || sec->output_section == NULL)
9039 {
9040 unresolved_reloc = TRUE;
9041 break;
9042 }
a0f49396
NC
9043 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9044 ".got") == 0
9045 || strcmp (bfd_get_section_name (sec->owner, sec),
9046 ".cgot") == 0);
252b5132 9047
3b4f3a11 9048 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
9049 break;
9050
7619e7c7 9051 case R_PPC_PLTREL24:
f75e0e33
AM
9052 if (h != NULL && ifunc == NULL)
9053 {
cbf95972
AM
9054 struct plt_entry *ent;
9055
9056 ent = find_plt_ent (&h->plt.plist, got2,
9057 bfd_link_pic (info) ? addend : 0);
f75e0e33 9058 if (ent == NULL
ce558b89 9059 || htab->elf.splt == NULL)
f75e0e33
AM
9060 {
9061 /* We didn't make a PLT entry for this symbol. This
9062 happens when statically linking PIC code, or when
9063 using -Bsymbolic. */
9064 }
9065 else
9066 {
9067 /* Relocation is to the entry for this symbol in the
9068 procedure linkage table. */
9069 unresolved_reloc = FALSE;
9070 if (htab->plt_type == PLT_NEW)
9071 relocation = (htab->glink->output_section->vma
9072 + htab->glink->output_offset
9073 + ent->glink_offset);
9074 else
ce558b89
AM
9075 relocation = (htab->elf.splt->output_section->vma
9076 + htab->elf.splt->output_offset
f75e0e33
AM
9077 + ent->plt.offset);
9078 }
9079 }
252b5132 9080
f75e0e33
AM
9081 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9082 addend specifies the GOT pointer offset within .got2.
9083 Don't apply it to the relocation field. */
9084 addend = 0;
8da6118f 9085 break;
252b5132 9086
70bccea4 9087 /* Relocate against _SDA_BASE_. */
7619e7c7 9088 case R_PPC_SDAREL16:
252b5132
RH
9089 {
9090 const char *name;
bd6c6e2b 9091 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
252b5132 9092
bd6c6e2b
AM
9093 if (sec == NULL
9094 || sec->output_section == NULL
9095 || !is_static_defined (sda))
3b4f3a11
AM
9096 {
9097 unresolved_reloc = TRUE;
9098 break;
9099 }
bd6c6e2b 9100 addend -= SYM_VAL (sda);
3b4f3a11 9101
a0f49396 9102 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9103 if (!(strcmp (name, ".sdata") == 0
9104 || strcmp (name, ".sbss") == 0))
252b5132 9105 {
cf97bcb0 9106 _bfd_error_handler
695344c0 9107 /* xgettext:c-format */
cf97bcb0
AM
9108 (_("%pB: the target (%s) of a %s relocation is "
9109 "in the wrong output section (%s)"),
d003868e 9110 input_bfd,
55fd94b0
AM
9111 sym_name,
9112 howto->name,
9113 name);
252b5132 9114 }
252b5132
RH
9115 }
9116 break;
9117
70bccea4 9118 /* Relocate against _SDA2_BASE_. */
7619e7c7 9119 case R_PPC_EMB_SDA2REL:
252b5132
RH
9120 {
9121 const char *name;
bd6c6e2b 9122 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
252b5132 9123
bd6c6e2b
AM
9124 if (sec == NULL
9125 || sec->output_section == NULL
9126 || !is_static_defined (sda))
3b4f3a11
AM
9127 {
9128 unresolved_reloc = TRUE;
9129 break;
9130 }
bd6c6e2b 9131 addend -= SYM_VAL (sda);
3b4f3a11 9132
a0f49396 9133 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9134 if (!(strcmp (name, ".sdata2") == 0
9135 || strcmp (name, ".sbss2") == 0))
252b5132 9136 {
cf97bcb0 9137 _bfd_error_handler
695344c0 9138 /* xgettext:c-format */
cf97bcb0
AM
9139 (_("%pB: the target (%s) of a %s relocation is "
9140 "in the wrong output section (%s)"),
d003868e 9141 input_bfd,
55fd94b0
AM
9142 sym_name,
9143 howto->name,
9144 name);
252b5132 9145 }
252b5132
RH
9146 }
9147 break;
9148
b9c361e0 9149 case R_PPC_VLE_LO16A:
86c95733 9150 relocation = relocation + addend;
08dc996f
AM
9151 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9152 contents + rel->r_offset, relocation,
9153 split16a_type, htab->params->vle_reloc_fixup);
c316a17c 9154 goto copy_reloc;
b9c361e0
JL
9155
9156 case R_PPC_VLE_LO16D:
86c95733 9157 relocation = relocation + addend;
08dc996f
AM
9158 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9159 contents + rel->r_offset, relocation,
9160 split16d_type, htab->params->vle_reloc_fixup);
c316a17c 9161 goto copy_reloc;
b9c361e0
JL
9162
9163 case R_PPC_VLE_HI16A:
86c95733 9164 relocation = (relocation + addend) >> 16;
08dc996f
AM
9165 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9166 contents + rel->r_offset, relocation,
9167 split16a_type, htab->params->vle_reloc_fixup);
c316a17c 9168 goto copy_reloc;
b9c361e0
JL
9169
9170 case R_PPC_VLE_HI16D:
86c95733 9171 relocation = (relocation + addend) >> 16;
08dc996f
AM
9172 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9173 contents + rel->r_offset, relocation,
9174 split16d_type, htab->params->vle_reloc_fixup);
c316a17c 9175 goto copy_reloc;
b9c361e0
JL
9176
9177 case R_PPC_VLE_HA16A:
86c95733 9178 relocation = (relocation + addend + 0x8000) >> 16;
08dc996f
AM
9179 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9180 contents + rel->r_offset, relocation,
9181 split16a_type, htab->params->vle_reloc_fixup);
c316a17c 9182 goto copy_reloc;
b9c361e0
JL
9183
9184 case R_PPC_VLE_HA16D:
86c95733 9185 relocation = (relocation + addend + 0x8000) >> 16;
08dc996f
AM
9186 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9187 contents + rel->r_offset, relocation,
9188 split16d_type, htab->params->vle_reloc_fixup);
c316a17c 9189 goto copy_reloc;
b9c361e0 9190
70bccea4 9191 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7 9192 case R_PPC_EMB_SDA21:
b9c361e0 9193 case R_PPC_VLE_SDA21:
7619e7c7 9194 case R_PPC_EMB_RELSDA:
b9c361e0 9195 case R_PPC_VLE_SDA21_LO:
252b5132
RH
9196 {
9197 const char *name;
9198 int reg;
86c95733 9199 unsigned int insn;
bd6c6e2b 9200 struct elf_link_hash_entry *sda = NULL;
252b5132 9201
3b4f3a11
AM
9202 if (sec == NULL || sec->output_section == NULL)
9203 {
9204 unresolved_reloc = TRUE;
9205 break;
9206 }
9207
a0f49396 9208 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9209 if (strcmp (name, ".sdata") == 0
9210 || strcmp (name, ".sbss") == 0)
252b5132
RH
9211 {
9212 reg = 13;
bd6c6e2b 9213 sda = htab->sdata[0].sym;
252b5132 9214 }
93d1b056
AM
9215 else if (strcmp (name, ".sdata2") == 0
9216 || strcmp (name, ".sbss2") == 0)
252b5132
RH
9217 {
9218 reg = 2;
bd6c6e2b 9219 sda = htab->sdata[1].sym;
252b5132 9220 }
8da6118f
KH
9221 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9222 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
9223 {
9224 reg = 0;
9225 }
252b5132
RH
9226 else
9227 {
cf97bcb0 9228 _bfd_error_handler
695344c0 9229 /* xgettext:c-format */
cf97bcb0
AM
9230 (_("%pB: the target (%s) of a %s relocation is "
9231 "in the wrong output section (%s)"),
d003868e 9232 input_bfd,
55fd94b0
AM
9233 sym_name,
9234 howto->name,
9235 name);
252b5132
RH
9236
9237 bfd_set_error (bfd_error_bad_value);
b34976b6 9238 ret = FALSE;
c316a17c 9239 goto copy_reloc;
252b5132
RH
9240 }
9241
bd6c6e2b
AM
9242 if (sda != NULL)
9243 {
9244 if (!is_static_defined (sda))
9245 {
9246 unresolved_reloc = TRUE;
9247 break;
9248 }
9249 addend -= SYM_VAL (sda);
9250 }
9251
95f0d0d2 9252 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
b9c361e0
JL
9253 if (reg == 0
9254 && (r_type == R_PPC_VLE_SDA21
9255 || r_type == R_PPC_VLE_SDA21_LO))
9256 {
86c95733
AM
9257 relocation = relocation + addend;
9258 addend = 0;
9259
9260 /* Force e_li insn, keeping RT from original insn. */
9261 insn &= 0x1f << 21;
9262 insn |= 28u << 26;
9263
9264 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9265 /* Top 4 bits of value to 17..20. */
9266 insn |= (relocation & 0xf0000) >> 5;
9267 /* Next 5 bits of the value to 11..15. */
9268 insn |= (relocation & 0xf800) << 5;
9269 /* And the final 11 bits of the value to bits 21 to 31. */
9270 insn |= relocation & 0x7ff;
9271
95f0d0d2 9272 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
c3301df1
AM
9273
9274 if (r_type == R_PPC_VLE_SDA21
9275 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9276 goto overflow;
c316a17c 9277 goto copy_reloc;
b9c361e0
JL
9278 }
9279 else if (r_type == R_PPC_EMB_SDA21
9280 || r_type == R_PPC_VLE_SDA21
9281 || r_type == R_PPC_VLE_SDA21_LO)
91d6fa6a 9282 {
86c95733 9283 /* Fill in register field. */
252b5132 9284 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
252b5132 9285 }
95f0d0d2 9286 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
252b5132
RH
9287 }
9288 break;
9289
b9c361e0
JL
9290 case R_PPC_VLE_SDAREL_LO16A:
9291 case R_PPC_VLE_SDAREL_LO16D:
9292 case R_PPC_VLE_SDAREL_HI16A:
9293 case R_PPC_VLE_SDAREL_HI16D:
9294 case R_PPC_VLE_SDAREL_HA16A:
9295 case R_PPC_VLE_SDAREL_HA16D:
9296 {
9297 bfd_vma value;
9298 const char *name;
b9c361e0
JL
9299 struct elf_link_hash_entry *sda = NULL;
9300
9301 if (sec == NULL || sec->output_section == NULL)
9302 {
9303 unresolved_reloc = TRUE;
9304 break;
9305 }
9306
a0f49396 9307 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9308 if (strcmp (name, ".sdata") == 0
9309 || strcmp (name, ".sbss") == 0)
5499c7c7 9310 sda = htab->sdata[0].sym;
93d1b056
AM
9311 else if (strcmp (name, ".sdata2") == 0
9312 || strcmp (name, ".sbss2") == 0)
5499c7c7 9313 sda = htab->sdata[1].sym;
b9c361e0
JL
9314 else
9315 {
4eca0228 9316 _bfd_error_handler
695344c0 9317 /* xgettext:c-format */
871b3ab2 9318 (_("%pB: the target (%s) of a %s relocation is "
b9c361e0
JL
9319 "in the wrong output section (%s)"),
9320 input_bfd,
9321 sym_name,
9322 howto->name,
9323 name);
9324
9325 bfd_set_error (bfd_error_bad_value);
9326 ret = FALSE;
c316a17c 9327 goto copy_reloc;
b9c361e0
JL
9328 }
9329
5499c7c7 9330 if (sda == NULL || !is_static_defined (sda))
b9c361e0 9331 {
5499c7c7
AM
9332 unresolved_reloc = TRUE;
9333 break;
b9c361e0 9334 }
5499c7c7 9335 value = relocation + addend - SYM_VAL (sda);
86c95733
AM
9336
9337 if (r_type == R_PPC_VLE_SDAREL_LO16A)
08dc996f
AM
9338 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9339 contents + rel->r_offset, value,
9340 split16a_type,
9341 htab->params->vle_reloc_fixup);
86c95733 9342 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
08dc996f
AM
9343 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9344 contents + rel->r_offset, value,
9345 split16d_type,
9346 htab->params->vle_reloc_fixup);
86c95733 9347 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
b9c361e0 9348 {
86c95733 9349 value = value >> 16;
08dc996f
AM
9350 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9351 contents + rel->r_offset, value,
9352 split16a_type,
9353 htab->params->vle_reloc_fixup);
b9c361e0 9354 }
86c95733 9355 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
b9c361e0 9356 {
86c95733 9357 value = value >> 16;
08dc996f
AM
9358 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9359 contents + rel->r_offset, value,
9360 split16d_type,
9361 htab->params->vle_reloc_fixup);
b9c361e0 9362 }
86c95733 9363 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
b9c361e0 9364 {
86c95733 9365 value = (value + 0x8000) >> 16;
08dc996f
AM
9366 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9367 contents + rel->r_offset, value,
9368 split16a_type,
9369 htab->params->vle_reloc_fixup);
b9c361e0 9370 }
86c95733 9371 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
b9c361e0 9372 {
86c95733 9373 value = (value + 0x8000) >> 16;
08dc996f
AM
9374 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9375 contents + rel->r_offset, value,
9376 split16d_type,
9377 htab->params->vle_reloc_fixup);
b9c361e0
JL
9378 }
9379 }
c316a17c 9380 goto copy_reloc;
b9c361e0 9381
83eef883
AFB
9382 case R_PPC_VLE_ADDR20:
9383 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9384 continue;
9385
70bccea4 9386 /* Relocate against the beginning of the section. */
7619e7c7
AM
9387 case R_PPC_SECTOFF:
9388 case R_PPC_SECTOFF_LO:
9389 case R_PPC_SECTOFF_HI:
9390 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
9391 if (sec == NULL || sec->output_section == NULL)
9392 {
9393 unresolved_reloc = TRUE;
9394 break;
9395 }
252b5132 9396 addend -= sec->output_section->vma;
252b5132
RH
9397 break;
9398
70bccea4 9399 /* Negative relocations. */
7619e7c7
AM
9400 case R_PPC_EMB_NADDR32:
9401 case R_PPC_EMB_NADDR16:
9402 case R_PPC_EMB_NADDR16_LO:
9403 case R_PPC_EMB_NADDR16_HI:
9404 case R_PPC_EMB_NADDR16_HA:
8da6118f 9405 addend -= 2 * relocation;
252b5132
RH
9406 break;
9407
7619e7c7
AM
9408 case R_PPC_COPY:
9409 case R_PPC_GLOB_DAT:
9410 case R_PPC_JMP_SLOT:
9411 case R_PPC_RELATIVE:
e054468f 9412 case R_PPC_IRELATIVE:
7619e7c7
AM
9413 case R_PPC_PLT32:
9414 case R_PPC_PLTREL32:
9415 case R_PPC_PLT16_LO:
9416 case R_PPC_PLT16_HI:
9417 case R_PPC_PLT16_HA:
9418 case R_PPC_ADDR30:
9419 case R_PPC_EMB_RELSEC16:
9420 case R_PPC_EMB_RELST_LO:
9421 case R_PPC_EMB_RELST_HI:
9422 case R_PPC_EMB_RELST_HA:
9423 case R_PPC_EMB_BIT_FLD:
cf97bcb0
AM
9424 /* xgettext:c-format */
9425 _bfd_error_handler (_("%pB: %s unsupported"),
9426 input_bfd, howto->name);
252b5132
RH
9427
9428 bfd_set_error (bfd_error_invalid_operation);
b34976b6 9429 ret = FALSE;
c316a17c 9430 goto copy_reloc;
7619e7c7 9431 }
252b5132 9432
7619e7c7
AM
9433 /* Do any further special processing. */
9434 switch (r_type)
9435 {
9436 default:
9437 break;
9438
9439 case R_PPC_ADDR16_HA:
d7128ce4 9440 case R_PPC_REL16_HA:
a680de9a 9441 case R_PPC_REL16DX_HA:
7619e7c7
AM
9442 case R_PPC_SECTOFF_HA:
9443 case R_PPC_TPREL16_HA:
9444 case R_PPC_DTPREL16_HA:
7619e7c7
AM
9445 case R_PPC_EMB_NADDR16_HA:
9446 case R_PPC_EMB_RELST_HA:
9447 /* It's just possible that this symbol is a weak symbol
7b609f53 9448 that's not actually defined anywhere. In that case,
7619e7c7
AM
9449 'sec' would be NULL, and we should leave the symbol
9450 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
9451 if (sec == NULL)
9452 break;
1a0670f3 9453 /* Fall through. */
5c5f6e17
AM
9454
9455 case R_PPC_PLT16_HA:
9456 case R_PPC_GOT16_HA:
9457 case R_PPC_GOT_TLSGD16_HA:
9458 case R_PPC_GOT_TLSLD16_HA:
9459 case R_PPC_GOT_TPREL16_HA:
9460 case R_PPC_GOT_DTPREL16_HA:
9461 /* Add 0x10000 if sign bit in 0:15 is set.
9462 Bits 0:15 are not used. */
9463 addend += 0x8000;
7619e7c7 9464 break;
1fe532cf
AM
9465
9466 case R_PPC_ADDR16:
9467 case R_PPC_ADDR16_LO:
9468 case R_PPC_GOT16:
9469 case R_PPC_GOT16_LO:
9470 case R_PPC_SDAREL16:
9471 case R_PPC_SECTOFF:
9472 case R_PPC_SECTOFF_LO:
9473 case R_PPC_DTPREL16:
9474 case R_PPC_DTPREL16_LO:
9475 case R_PPC_TPREL16:
9476 case R_PPC_TPREL16_LO:
9477 case R_PPC_GOT_TLSGD16:
9478 case R_PPC_GOT_TLSGD16_LO:
9479 case R_PPC_GOT_TLSLD16:
9480 case R_PPC_GOT_TLSLD16_LO:
9481 case R_PPC_GOT_DTPREL16:
9482 case R_PPC_GOT_DTPREL16_LO:
9483 case R_PPC_GOT_TPREL16:
9484 case R_PPC_GOT_TPREL16_LO:
9485 {
9486 /* The 32-bit ABI lacks proper relocations to deal with
9487 certain 64-bit instructions. Prevent damage to bits
9488 that make up part of the insn opcode. */
9489 unsigned int insn, mask, lobit;
9490
95f0d0d2 9491 insn = bfd_get_32 (input_bfd,
c316a17c 9492 contents + rel->r_offset - d_offset);
1fe532cf
AM
9493 mask = 0;
9494 if (is_insn_ds_form (insn))
9495 mask = 3;
9496 else if (is_insn_dq_form (insn))
9497 mask = 15;
9498 else
9499 break;
a680de9a
PB
9500 relocation += addend;
9501 addend = insn & mask;
9502 lobit = mask & relocation;
1fe532cf
AM
9503 if (lobit != 0)
9504 {
a680de9a 9505 relocation ^= lobit;
1fe532cf 9506 info->callbacks->einfo
695344c0 9507 /* xgettext:c-format */
174d0a74 9508 (_("%H: error: %s against `%s' not a multiple of %u\n"),
1fe532cf
AM
9509 input_bfd, input_section, rel->r_offset,
9510 howto->name, sym_name, mask + 1);
9511 bfd_set_error (bfd_error_bad_value);
9512 ret = FALSE;
9513 }
1fe532cf
AM
9514 }
9515 break;
252b5132
RH
9516 }
9517
252b5132 9518#ifdef DEBUG
55fd94b0
AM
9519 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9520 "offset = %ld, addend = %ld\n",
252b5132 9521 howto->name,
8da6118f 9522 (int) r_type,
252b5132
RH
9523 sym_name,
9524 r_symndx,
7619e7c7 9525 (long) rel->r_offset,
8da6118f 9526 (long) addend);
252b5132
RH
9527#endif
9528
7619e7c7
AM
9529 if (unresolved_reloc
9530 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
9531 && h->def_dynamic)
9532 && _bfd_elf_section_offset (output_bfd, info, input_section,
9533 rel->r_offset) != (bfd_vma) -1)
7619e7c7 9534 {
25f53a85 9535 info->callbacks->einfo
695344c0 9536 /* xgettext:c-format */
174d0a74 9537 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
25f53a85 9538 input_bfd, input_section, rel->r_offset,
7b609f53 9539 howto->name,
7619e7c7
AM
9540 sym_name);
9541 ret = FALSE;
9542 }
9543
86c95733
AM
9544 /* 16-bit fields in insns mostly have signed values, but a
9545 few insns have 16-bit unsigned values. Really, we should
9546 have different reloc types. */
9547 if (howto->complain_on_overflow != complain_overflow_dont
9548 && howto->dst_mask == 0xffff
9549 && (input_section->flags & SEC_CODE) != 0)
9550 {
9551 enum complain_overflow complain = complain_overflow_signed;
9552
9553 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9554 {
9555 unsigned int insn;
9556
9557 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM
9558 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9559 complain = complain_overflow_bitfield;
9560 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9561 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9562 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
86c95733
AM
9563 complain = complain_overflow_unsigned;
9564 }
9565 if (howto->complain_on_overflow != complain)
9566 {
9567 alt_howto = *howto;
9568 alt_howto.complain_on_overflow = complain;
9569 howto = &alt_howto;
9570 }
9571 }
9572
a680de9a
PB
9573 if (r_type == R_PPC_REL16DX_HA)
9574 {
9575 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9576 if (rel->r_offset + 4 > input_section->size)
9577 r = bfd_reloc_outofrange;
9578 else
9579 {
9580 unsigned int insn;
9581
9582 relocation += addend;
9583 relocation -= (rel->r_offset
9584 + input_section->output_offset
9585 + input_section->output_section->vma);
9586 relocation >>= 16;
9587 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9588 insn &= ~0x1fffc1;
9589 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9590 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9591 r = bfd_reloc_ok;
9592 }
9593 }
9594 else
9595 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9596 rel->r_offset, relocation, addend);
252b5132 9597
7619e7c7 9598 if (r != bfd_reloc_ok)
252b5132 9599 {
7619e7c7 9600 if (r == bfd_reloc_overflow)
252b5132 9601 {
c3301df1 9602 overflow:
8131c122
AM
9603 /* On code like "if (foo) foo();" don't report overflow
9604 on a branch to zero when foo is undefined. */
9605 if (!warned
9606 && !(h != NULL
9607 && (h->root.type == bfd_link_hash_undefweak
9608 || h->root.type == bfd_link_hash_undefined)
9609 && is_branch_reloc (r_type)))
1a72702b
AM
9610 info->callbacks->reloc_overflow
9611 (info, (h ? &h->root : NULL), sym_name, howto->name,
9612 rel->r_addend, input_bfd, input_section, rel->r_offset);
dc1bc0c9
RH
9613 }
9614 else
9615 {
25f53a85 9616 info->callbacks->einfo
695344c0 9617 /* xgettext:c-format */
174d0a74 9618 (_("%H: %s reloc against `%s': error %d\n"),
25f53a85
AM
9619 input_bfd, input_section, rel->r_offset,
9620 howto->name, sym_name, (int) r);
7619e7c7 9621 ret = FALSE;
252b5132
RH
9622 }
9623 }
c316a17c
AM
9624 copy_reloc:
9625 if (wrel != rel)
9626 *wrel = *rel;
9627 }
9628
9629 if (wrel != rel)
9630 {
9631 Elf_Internal_Shdr *rel_hdr;
9632 size_t deleted = rel - wrel;
9633
9634 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9635 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9636 if (rel_hdr->sh_size == 0)
9637 {
9638 /* It is too late to remove an empty reloc section. Leave
9639 one NONE reloc.
9640 ??? What is wrong with an empty section??? */
9641 rel_hdr->sh_size = rel_hdr->sh_entsize;
9642 deleted -= 1;
9643 wrel++;
9644 }
9645 relend = wrel;
9646 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9647 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9648 input_section->reloc_count -= deleted;
252b5132
RH
9649 }
9650
252b5132
RH
9651#ifdef DEBUG
9652 fprintf (stderr, "\n");
9653#endif
9654
53291d1f
AM
9655 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9656 && input_section->size != input_section->rawsize
9657 && (strcmp (input_section->output_section->name, ".init") == 0
9658 || strcmp (input_section->output_section->name, ".fini") == 0))
9659 {
9660 /* Branch around the trampolines. */
9661 unsigned int insn = B + input_section->size - input_section->rawsize;
9662 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9663 }
9664
5446cbdf 9665 if (htab->params->ppc476_workaround
795bc6b3 9666 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
0e1862bb 9667 && (!bfd_link_relocatable (info)
795bc6b3
AM
9668 || (input_section->output_section->alignment_power
9669 >= htab->params->pagesize_p2)))
5446cbdf 9670 {
5446cbdf 9671 bfd_vma start_addr, end_addr, addr;
795bc6b3 9672 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf 9673
5446cbdf 9674 if (relax_info->workaround_size != 0)
40fd06d1
AM
9675 {
9676 bfd_byte *p;
9677 unsigned int n;
9678 bfd_byte fill[4];
9679
9680 bfd_put_32 (input_bfd, BA, fill);
9681 p = contents + input_section->size - relax_info->workaround_size;
9682 n = relax_info->workaround_size >> 2;
9683 while (n--)
9684 {
9685 memcpy (p, fill, 4);
9686 p += 4;
9687 }
9688 }
5446cbdf
AM
9689
9690 /* The idea is: Replace the last instruction on a page with a
9691 branch to a patch area. Put the insn there followed by a
9692 branch back to the next page. Complicated a little by
9693 needing to handle moved conditional branches, and by not
9694 wanting to touch data-in-text. */
9695
9696 start_addr = (input_section->output_section->vma
9697 + input_section->output_offset);
9698 end_addr = (start_addr + input_section->size
9699 - relax_info->workaround_size);
9700 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9701 addr < end_addr;
9702 addr += pagesize)
9703 {
9704 bfd_vma offset = addr - start_addr;
9705 Elf_Internal_Rela *lo, *hi;
9706 bfd_boolean is_data;
9707 bfd_vma patch_off, patch_addr;
9708 unsigned int insn;
9709
9710 /* Do we have a data reloc at this offset? If so, leave
9711 the word alone. */
9712 is_data = FALSE;
9713 lo = relocs;
668e22e5
AM
9714 hi = relend;
9715 rel = NULL;
5446cbdf
AM
9716 while (lo < hi)
9717 {
9718 rel = lo + (hi - lo) / 2;
9719 if (rel->r_offset < offset)
9720 lo = rel + 1;
668e22e5 9721 else if (rel->r_offset > offset + 3)
5446cbdf
AM
9722 hi = rel;
9723 else
9724 {
9725 switch (ELF32_R_TYPE (rel->r_info))
9726 {
9727 case R_PPC_ADDR32:
9728 case R_PPC_UADDR32:
9729 case R_PPC_REL32:
9730 case R_PPC_ADDR30:
9731 is_data = TRUE;
9732 break;
9733 default:
9734 break;
9735 }
9736 break;
9737 }
9738 }
9739 if (is_data)
9740 continue;
9741
b4ab4364
AM
9742 /* Some instructions can be left alone too. Unconditional
9743 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9744 avoid the icache failure.
9745
9746 The problem occurs due to prefetch across a page boundary
9747 where stale instructions can be fetched from the next
9748 page, and the mechanism for flushing these bad
9749 instructions fails under certain circumstances. The
9750 unconditional branches:
9751 1) Branch: b, bl, ba, bla,
9752 2) Branch Conditional: bc, bca, bcl, bcla,
9753 3) Branch Conditional to Link Register: bclr, bclrl,
9754 where (2) and (3) have BO=0x14 making them unconditional,
9755 prevent the bad prefetch because the prefetch itself is
9756 affected by these instructions. This happens even if the
9757 instruction is not executed.
9758
9759 A bctr example:
9760 .
9761 . lis 9,new_page@ha
9762 . addi 9,9,new_page@l
9763 . mtctr 9
9764 . bctr
9765 . nop
9766 . nop
9767 . new_page:
9768 .
9769 The bctr is not predicted taken due to ctr not being
9770 ready, so prefetch continues on past the bctr into the
9771 new page which might have stale instructions. If they
9772 fail to be flushed, then they will be executed after the
9773 bctr executes. Either of the following modifications
9774 prevent the bad prefetch from happening in the first
9775 place:
9776 .
1b786873
L
9777 . lis 9,new_page@ha lis 9,new_page@ha
9778 . addi 9,9,new_page@l addi 9,9,new_page@l
9779 . mtctr 9 mtctr 9
9780 . bctr bctr
b4ab4364 9781 . nop b somewhere_else
1b786873
L
9782 . b somewhere_else nop
9783 . new_page: new_page:
b4ab4364 9784 . */
5446cbdf 9785 insn = bfd_get_32 (input_bfd, contents + offset);
07d6d2b8
AM
9786 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9787 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9788 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
5446cbdf 9789 || ((insn & (0x3f << 26)) == (19u << 26)
b4ab4364 9790 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
07d6d2b8 9791 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
5446cbdf
AM
9792 continue;
9793
9794 patch_addr = (start_addr + input_section->size
9795 - relax_info->workaround_size);
9796 patch_addr = (patch_addr + 15) & -16;
9797 patch_off = patch_addr - start_addr;
9798 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
668e22e5
AM
9799
9800 if (rel != NULL
9801 && rel->r_offset >= offset
9802 && rel->r_offset < offset + 4)
9803 {
f8b44781
AM
9804 asection *sreloc;
9805
668e22e5
AM
9806 /* If the insn we are patching had a reloc, adjust the
9807 reloc r_offset so that the reloc applies to the moved
9808 location. This matters for -r and --emit-relocs. */
9809 if (rel + 1 != relend)
9810 {
9811 Elf_Internal_Rela tmp = *rel;
9812
9813 /* Keep the relocs sorted by r_offset. */
9814 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9815 relend[-1] = tmp;
9816 }
9817 relend[-1].r_offset += patch_off - offset;
f8b44781
AM
9818
9819 /* Adjust REL16 addends too. */
9820 switch (ELF32_R_TYPE (relend[-1].r_info))
9821 {
9822 case R_PPC_REL16:
9823 case R_PPC_REL16_LO:
9824 case R_PPC_REL16_HI:
9825 case R_PPC_REL16_HA:
9826 relend[-1].r_addend += patch_off - offset;
9827 break;
9828 default:
9829 break;
9830 }
9831
9832 /* If we are building a PIE or shared library with
9833 non-PIC objects, perhaps we had a dynamic reloc too?
9834 If so, the dynamic reloc must move with the insn. */
9835 sreloc = elf_section_data (input_section)->sreloc;
9836 if (sreloc != NULL)
9837 {
1d5c94cb 9838 Elf32_External_Rela *slo, *shi, *srelend;
f8b44781
AM
9839 bfd_vma soffset;
9840
1d5c94cb
AM
9841 slo = (Elf32_External_Rela *) sreloc->contents;
9842 shi = srelend = slo + sreloc->reloc_count;
f8b44781
AM
9843 soffset = (offset + input_section->output_section->vma
9844 + input_section->output_offset);
9845 while (slo < shi)
9846 {
1d5c94cb
AM
9847 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9848 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9849 &outrel);
f8b44781
AM
9850 if (outrel.r_offset < soffset)
9851 slo = srel + 1;
9852 else if (outrel.r_offset > soffset + 3)
9853 shi = srel;
9854 else
9855 {
1d5c94cb 9856 if (srel + 1 != srelend)
f8b44781 9857 {
1d5c94cb
AM
9858 memmove (srel, srel + 1,
9859 (srelend - (srel + 1)) * sizeof (*srel));
9860 srel = srelend - 1;
f8b44781
AM
9861 }
9862 outrel.r_offset += patch_off - offset;
1d5c94cb
AM
9863 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9864 (bfd_byte *) srel);
f8b44781
AM
9865 break;
9866 }
9867 }
9868 }
668e22e5
AM
9869 }
9870 else
9871 rel = NULL;
9872
5446cbdf
AM
9873 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9874 && (insn & 2) == 0 /* relative */)
9875 {
9876 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9877
9878 delta += offset - patch_off;
0e1862bb 9879 if (bfd_link_relocatable (info) && rel != NULL)
668e22e5 9880 delta = 0;
0e1862bb 9881 if (!bfd_link_relocatable (info) && rel != NULL)
668e22e5
AM
9882 {
9883 enum elf_ppc_reloc_type r_type;
9884
9885 r_type = ELF32_R_TYPE (relend[-1].r_info);
9886 if (r_type == R_PPC_REL14_BRTAKEN)
9887 insn |= BRANCH_PREDICT_BIT;
9888 else if (r_type == R_PPC_REL14_BRNTAKEN)
9889 insn &= ~BRANCH_PREDICT_BIT;
9890 else
9891 BFD_ASSERT (r_type == R_PPC_REL14);
9892
9893 if ((r_type == R_PPC_REL14_BRTAKEN
9894 || r_type == R_PPC_REL14_BRNTAKEN)
9895 && delta + 0x8000 < 0x10000
9896 && (bfd_signed_vma) delta < 0)
9897 insn ^= BRANCH_PREDICT_BIT;
9898 }
5446cbdf
AM
9899 if (delta + 0x8000 < 0x10000)
9900 {
9901 bfd_put_32 (input_bfd,
9902 (insn & ~0xfffc) | (delta & 0xfffc),
9903 contents + patch_off);
9904 patch_off += 4;
9905 bfd_put_32 (input_bfd,
9906 B | ((offset + 4 - patch_off) & 0x3fffffc),
9907 contents + patch_off);
9908 patch_off += 4;
9909 }
9910 else
9911 {
668e22e5
AM
9912 if (rel != NULL)
9913 {
9914 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9915
9916 relend[-1].r_offset += 8;
9917 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9918 }
5446cbdf
AM
9919 bfd_put_32 (input_bfd,
9920 (insn & ~0xfffc) | 8,
9921 contents + patch_off);
9922 patch_off += 4;
9923 bfd_put_32 (input_bfd,
9924 B | ((offset + 4 - patch_off) & 0x3fffffc),
9925 contents + patch_off);
9926 patch_off += 4;
9927 bfd_put_32 (input_bfd,
9928 B | ((delta - 8) & 0x3fffffc),
9929 contents + patch_off);
9930 patch_off += 4;
9931 }
9932 }
9933 else
9934 {
9935 bfd_put_32 (input_bfd, insn, contents + patch_off);
9936 patch_off += 4;
9937 bfd_put_32 (input_bfd,
9938 B | ((offset + 4 - patch_off) & 0x3fffffc),
9939 contents + patch_off);
9940 patch_off += 4;
9941 }
9942 BFD_ASSERT (patch_off <= input_section->size);
9943 relax_info->workaround_size = input_section->size - patch_off;
9944 }
9945 }
9946
252b5132
RH
9947 return ret;
9948}
252b5132 9949\f
25dbc73a
AM
9950/* Finish up dynamic symbol handling. We set the contents of various
9951 dynamic sections here. */
c5fccbec 9952
b34976b6 9953static bfd_boolean
25dbc73a
AM
9954ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9955 struct bfd_link_info *info,
9956 struct elf_link_hash_entry *h,
9957 Elf_Internal_Sym *sym)
e1a9cb8e 9958{
25dbc73a 9959 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
9960 struct plt_entry *ent;
9961 bfd_boolean doneone;
e1a9cb8e 9962
25dbc73a
AM
9963#ifdef DEBUG
9964 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9965 h->root.root.string);
9966#endif
e1a9cb8e 9967
25dbc73a
AM
9968 htab = ppc_elf_hash_table (info);
9969 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 9970
a6aa5195
AM
9971 doneone = FALSE;
9972 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9973 if (ent->plt.offset != (bfd_vma) -1)
9974 {
9975 if (!doneone)
9976 {
9977 Elf_Internal_Rela rela;
9978 bfd_byte *loc;
9979 bfd_vma reloc_index;
e1a9cb8e 9980
e054468f 9981 if (htab->plt_type == PLT_NEW
25f23106
AM
9982 || !htab->elf.dynamic_sections_created
9983 || h->dynindx == -1)
9d8504b1
PB
9984 reloc_index = ent->plt.offset / 4;
9985 else
9986 {
9987 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9988 / htab->plt_slot_size);
9989 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 9990 && htab->plt_type == PLT_OLD)
9d8504b1
PB
9991 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9992 }
9993
a6aa5195
AM
9994 /* This symbol has an entry in the procedure linkage table.
9995 Set it up. */
e054468f 9996 if (htab->plt_type == PLT_VXWORKS
25f23106
AM
9997 && htab->elf.dynamic_sections_created
9998 && h->dynindx != -1)
a6aa5195 9999 {
9d8504b1
PB
10000 bfd_vma got_offset;
10001 const bfd_vma *plt_entry;
5b914448 10002
9d8504b1
PB
10003 /* The first three entries in .got.plt are reserved. */
10004 got_offset = (reloc_index + 3) * 4;
10005
10006 /* Use the right PLT. */
0e1862bb 10007 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9d8504b1
PB
10008 : ppc_elf_vxworks_plt_entry;
10009
10010 /* Fill in the .plt on VxWorks. */
0e1862bb 10011 if (bfd_link_pic (info))
9d8504b1 10012 {
9d8504b1 10013 bfd_put_32 (output_bfd,
e87d4038 10014 plt_entry[0] | PPC_HA (got_offset),
ce558b89 10015 htab->elf.splt->contents + ent->plt.offset + 0);
9d8504b1 10016 bfd_put_32 (output_bfd,
e87d4038 10017 plt_entry[1] | PPC_LO (got_offset),
ce558b89 10018 htab->elf.splt->contents + ent->plt.offset + 4);
9d8504b1
PB
10019 }
10020 else
10021 {
e87d4038 10022 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
10023
10024 bfd_put_32 (output_bfd,
e87d4038 10025 plt_entry[0] | PPC_HA (got_loc),
ce558b89 10026 htab->elf.splt->contents + ent->plt.offset + 0);
9d8504b1 10027 bfd_put_32 (output_bfd,
e87d4038 10028 plt_entry[1] | PPC_LO (got_loc),
ce558b89 10029 htab->elf.splt->contents + ent->plt.offset + 4);
9d8504b1
PB
10030 }
10031
10032 bfd_put_32 (output_bfd, plt_entry[2],
ce558b89 10033 htab->elf.splt->contents + ent->plt.offset + 8);
9d8504b1 10034 bfd_put_32 (output_bfd, plt_entry[3],
ce558b89 10035 htab->elf.splt->contents + ent->plt.offset + 12);
9d8504b1
PB
10036
10037 /* This instruction is an immediate load. The value loaded is
10038 the byte offset of the R_PPC_JMP_SLOT relocation from the
10039 start of the .rela.plt section. The value is stored in the
10040 low-order 16 bits of the load instruction. */
10041 /* NOTE: It appears that this is now an index rather than a
10042 prescaled offset. */
5b914448 10043 bfd_put_32 (output_bfd,
9d8504b1 10044 plt_entry[4] | reloc_index,
ce558b89 10045 htab->elf.splt->contents + ent->plt.offset + 16);
9d8504b1
PB
10046 /* This instruction is a PC-relative branch whose target is
10047 the start of the PLT section. The address of this branch
10048 instruction is 20 bytes beyond the start of this PLT entry.
10049 The address is encoded in bits 6-29, inclusive. The value
10050 stored is right-shifted by two bits, permitting a 26-bit
10051 offset. */
5b914448
AM
10052 bfd_put_32 (output_bfd,
10053 (plt_entry[5]
9d8504b1 10054 | (-(ent->plt.offset + 20) & 0x03fffffc)),
ce558b89 10055 htab->elf.splt->contents + ent->plt.offset + 20);
9d8504b1 10056 bfd_put_32 (output_bfd, plt_entry[6],
ce558b89 10057 htab->elf.splt->contents + ent->plt.offset + 24);
9d8504b1 10058 bfd_put_32 (output_bfd, plt_entry[7],
ce558b89 10059 htab->elf.splt->contents + ent->plt.offset + 28);
9d8504b1
PB
10060
10061 /* Fill in the GOT entry corresponding to this PLT slot with
a8685210 10062 the address immediately after the "bctr" instruction
9d8504b1 10063 in this PLT entry. */
ce558b89
AM
10064 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10065 + htab->elf.splt->output_offset
9d8504b1 10066 + ent->plt.offset + 16),
ce558b89 10067 htab->elf.sgotplt->contents + got_offset);
9d8504b1 10068
0e1862bb 10069 if (!bfd_link_pic (info))
9d8504b1
PB
10070 {
10071 /* Fill in a couple of entries in .rela.plt.unloaded. */
10072 loc = htab->srelplt2->contents
10073 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10074 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10075 * sizeof (Elf32_External_Rela));
10076
10077 /* Provide the @ha relocation for the first instruction. */
ce558b89
AM
10078 rela.r_offset = (htab->elf.splt->output_section->vma
10079 + htab->elf.splt->output_offset
9d8504b1 10080 + ent->plt.offset + 2);
636ce3f5 10081 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
10082 R_PPC_ADDR16_HA);
10083 rela.r_addend = got_offset;
10084 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10085 loc += sizeof (Elf32_External_Rela);
10086
10087 /* Provide the @l relocation for the second instruction. */
ce558b89
AM
10088 rela.r_offset = (htab->elf.splt->output_section->vma
10089 + htab->elf.splt->output_offset
9d8504b1 10090 + ent->plt.offset + 6);
636ce3f5 10091 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
10092 R_PPC_ADDR16_LO);
10093 rela.r_addend = got_offset;
10094 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10095 loc += sizeof (Elf32_External_Rela);
10096
10097 /* Provide a relocation for the GOT entry corresponding to this
10098 PLT slot. Point it at the middle of the .plt entry. */
ce558b89
AM
10099 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10100 + htab->elf.sgotplt->output_offset
9d8504b1 10101 + got_offset);
7325306f 10102 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
10103 R_PPC_ADDR32);
10104 rela.r_addend = ent->plt.offset + 16;
10105 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10106 }
10107
10108 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10109 In particular, the offset for the relocation is not the
10110 address of the PLT entry for this function, as specified
10111 by the ABI. Instead, the offset is set to the address of
10112 the GOT slot for this function. See EABI 4.4.4.1. */
ce558b89
AM
10113 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10114 + htab->elf.sgotplt->output_offset
9d8504b1
PB
10115 + got_offset);
10116
a6aa5195
AM
10117 }
10118 else
10119 {
ce558b89 10120 asection *splt = htab->elf.splt;
25f23106
AM
10121 if (!htab->elf.dynamic_sections_created
10122 || h->dynindx == -1)
ce558b89 10123 splt = htab->elf.iplt;
e054468f
AM
10124
10125 rela.r_offset = (splt->output_section->vma
10126 + splt->output_offset
9d8504b1 10127 + ent->plt.offset);
e054468f 10128 if (htab->plt_type == PLT_OLD
25f23106
AM
10129 || !htab->elf.dynamic_sections_created
10130 || h->dynindx == -1)
9d8504b1
PB
10131 {
10132 /* We don't need to fill in the .plt. The ppc dynamic
10133 linker will fill it in. */
10134 }
10135 else
10136 {
10137 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10138 + htab->glink->output_section->vma
10139 + htab->glink->output_offset);
10140 bfd_put_32 (output_bfd, val,
e054468f 10141 splt->contents + ent->plt.offset);
9d8504b1 10142 }
a6aa5195 10143 }
e1a9cb8e 10144
a6aa5195 10145 /* Fill in the entry in the .rela.plt section. */
a6aa5195 10146 rela.r_addend = 0;
e054468f
AM
10147 if (!htab->elf.dynamic_sections_created
10148 || h->dynindx == -1)
10149 {
10150 BFD_ASSERT (h->type == STT_GNU_IFUNC
10151 && h->def_regular
10152 && (h->root.type == bfd_link_hash_defined
10153 || h->root.type == bfd_link_hash_defweak));
10154 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10155 rela.r_addend = SYM_VAL (h);
10156 }
10157 else
10158 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
e1a9cb8e 10159
25f23106
AM
10160 if (!htab->elf.dynamic_sections_created
10161 || h->dynindx == -1)
82e66161
AM
10162 {
10163 loc = (htab->elf.irelplt->contents
10164 + (htab->elf.irelplt->reloc_count++
10165 * sizeof (Elf32_External_Rela)));
10166 htab->local_ifunc_resolver = 1;
10167 }
e054468f 10168 else
82e66161
AM
10169 {
10170 loc = (htab->elf.srelplt->contents
10171 + reloc_index * sizeof (Elf32_External_Rela));
10172 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10173 htab->maybe_local_ifunc_resolver = 1;
10174 }
a6aa5195 10175 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 10176
a6aa5195
AM
10177 if (!h->def_regular)
10178 {
0eb4a168
AM
10179 /* Mark the symbol as undefined, rather than as
10180 defined in the .plt section. Leave the value if
10181 there were any relocations where pointer equality
10182 matters (this is a clue for the dynamic linker, to
10183 make function pointer comparisons work between an
10184 application and shared library), otherwise set it
10185 to zero. */
a6aa5195 10186 sym->st_shndx = SHN_UNDEF;
0eb4a168 10187 if (!h->pointer_equality_needed)
a6aa5195 10188 sym->st_value = 0;
0eb4a168
AM
10189 else if (!h->ref_regular_nonweak)
10190 {
625af618
AM
10191 /* This breaks function pointer comparisons, but
10192 that is better than breaking tests for a NULL
0eb4a168 10193 function pointer. */
0eb4a168
AM
10194 sym->st_value = 0;
10195 }
a6aa5195 10196 }
de972ffa 10197 else if (h->type == STT_GNU_IFUNC
0e1862bb 10198 && !bfd_link_pic (info))
de972ffa
AM
10199 {
10200 /* Set the value of ifunc symbols in a non-pie
10201 executable to the glink entry. This is to avoid
10202 text relocations. We can't do this for ifunc in
10203 allocate_dynrelocs, as we do for normal dynamic
10204 function symbols with plt entries, because we need
10205 to keep the original value around for the ifunc
10206 relocation. */
10207 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10208 (output_bfd, htab->glink->output_section));
5b914448
AM
10209 sym->st_value = (ent->glink_offset
10210 + htab->glink->output_offset
de972ffa
AM
10211 + htab->glink->output_section->vma);
10212 }
a6aa5195
AM
10213 doneone = TRUE;
10214 }
e1a9cb8e 10215
e054468f 10216 if (htab->plt_type == PLT_NEW
25f23106
AM
10217 || !htab->elf.dynamic_sections_created
10218 || h->dynindx == -1)
a6aa5195 10219 {
a7f2871e 10220 unsigned char *p;
ce558b89 10221 asection *splt = htab->elf.splt;
9e390558 10222
25f23106
AM
10223 if (!htab->elf.dynamic_sections_created
10224 || h->dynindx == -1)
ce558b89 10225 splt = htab->elf.iplt;
e1a9cb8e 10226
a7f2871e 10227 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9e390558 10228 write_glink_stub (h, ent, splt, p, info);
e1a9cb8e 10229
0e1862bb 10230 if (!bfd_link_pic (info))
e054468f
AM
10231 /* We only need one non-PIC glink stub. */
10232 break;
a6aa5195
AM
10233 }
10234 else
10235 break;
10236 }
e1a9cb8e 10237
25dbc73a
AM
10238 if (h->needs_copy)
10239 {
10240 asection *s;
10241 Elf_Internal_Rela rela;
10242 bfd_byte *loc;
e1a9cb8e 10243
25dbc73a 10244 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 10245
25dbc73a
AM
10246#ifdef DEBUG
10247 fprintf (stderr, ", copy");
10248#endif
e1a9cb8e 10249
25dbc73a 10250 BFD_ASSERT (h->dynindx != -1);
86bbe32f 10251
4dc4a9a5 10252 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a 10253 s = htab->relsbss;
afbf7e8e 10254 else if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f 10255 s = htab->elf.sreldynrelro;
25dbc73a 10256 else
9d19e4fd 10257 s = htab->elf.srelbss;
25dbc73a 10258 BFD_ASSERT (s != NULL);
e1a9cb8e 10259
e87d4038 10260 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
10261 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10262 rela.r_addend = 0;
10263 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10264 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10265 }
e1a9cb8e 10266
25dbc73a
AM
10267#ifdef DEBUG
10268 fprintf (stderr, "\n");
10269#endif
e1a9cb8e 10270
25dbc73a
AM
10271 return TRUE;
10272}
10273\f
10274static enum elf_reloc_type_class
7e612e98
AM
10275ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10276 const asection *rel_sec,
10277 const Elf_Internal_Rela *rela)
e1a9cb8e 10278{
7e612e98
AM
10279 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10280
ce558b89 10281 if (rel_sec == htab->elf.irelplt)
7e612e98
AM
10282 return reloc_class_ifunc;
10283
25dbc73a
AM
10284 switch (ELF32_R_TYPE (rela->r_info))
10285 {
10286 case R_PPC_RELATIVE:
10287 return reloc_class_relative;
25dbc73a
AM
10288 case R_PPC_JMP_SLOT:
10289 return reloc_class_plt;
10290 case R_PPC_COPY:
10291 return reloc_class_copy;
10292 default:
10293 return reloc_class_normal;
10294 }
e1a9cb8e 10295}
25dbc73a
AM
10296\f
10297/* Finish up the dynamic sections. */
e1a9cb8e 10298
25dbc73a
AM
10299static bfd_boolean
10300ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10301 struct bfd_link_info *info)
e1a9cb8e 10302{
25dbc73a
AM
10303 asection *sdyn;
10304 struct ppc_elf_link_hash_table *htab;
1fe44d79 10305 bfd_vma got;
e87d4038
AM
10306 bfd *dynobj;
10307 bfd_boolean ret = TRUE;
e1a9cb8e 10308
25dbc73a
AM
10309#ifdef DEBUG
10310 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10311#endif
6b0817e5 10312
25dbc73a 10313 htab = ppc_elf_hash_table (info);
ce558b89 10314 dynobj = htab->elf.dynobj;
3d4d4302 10315 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
e1a9cb8e 10316
1fe44d79
AM
10317 got = 0;
10318 if (htab->elf.hgot != NULL)
e87d4038 10319 got = SYM_VAL (htab->elf.hgot);
1fe44d79 10320
25dbc73a 10321 if (htab->elf.dynamic_sections_created)
e1a9cb8e 10322 {
25dbc73a 10323 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 10324
ce558b89 10325 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
86bbe32f 10326
25dbc73a
AM
10327 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10328 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10329 for (; dyncon < dynconend; dyncon++)
10330 {
10331 Elf_Internal_Dyn dyn;
10332 asection *s;
e1a9cb8e 10333
9d8504b1 10334 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 10335
25dbc73a
AM
10336 switch (dyn.d_tag)
10337 {
10338 case DT_PLTGOT:
9d8504b1 10339 if (htab->is_vxworks)
ce558b89 10340 s = htab->elf.sgotplt;
9d8504b1 10341 else
ce558b89 10342 s = htab->elf.splt;
25dbc73a
AM
10343 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10344 break;
86bbe32f 10345
25dbc73a 10346 case DT_PLTRELSZ:
ce558b89 10347 dyn.d_un.d_val = htab->elf.srelplt->size;
25dbc73a 10348 break;
e1a9cb8e 10349
25dbc73a 10350 case DT_JMPREL:
ce558b89 10351 s = htab->elf.srelplt;
25dbc73a
AM
10352 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10353 break;
2f89ff8d 10354
1fe44d79
AM
10355 case DT_PPC_GOT:
10356 dyn.d_un.d_ptr = got;
d7128ce4
AM
10357 break;
10358
82e66161
AM
10359 case DT_TEXTREL:
10360 if (htab->local_ifunc_resolver)
10361 info->callbacks->einfo
10362 (_("%X%P: text relocations and GNU indirect "
10363 "functions will result in a segfault at runtime\n"));
10364 else if (htab->maybe_local_ifunc_resolver)
10365 info->callbacks->einfo
10366 (_("%P: warning: text relocations and GNU indirect "
10367 "functions may result in a segfault at runtime\n"));
10368 continue;
10369
25dbc73a 10370 default:
7a2b07ff
NS
10371 if (htab->is_vxworks
10372 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10373 break;
25dbc73a
AM
10374 continue;
10375 }
4c45e5c9 10376
25dbc73a
AM
10377 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10378 }
10379 }
4c45e5c9 10380
6528b6eb
AM
10381 if (htab->elf.sgot != NULL
10382 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
25dbc73a 10383 {
ce558b89
AM
10384 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10385 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
e87d4038 10386 {
e79f5955 10387 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 10388
e87d4038
AM
10389 p += htab->elf.hgot->root.u.def.value;
10390 if (htab->plt_type == PLT_OLD)
e79f5955
AM
10391 {
10392 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10393 so that a function can easily find the address of
10394 _GLOBAL_OFFSET_TABLE_. */
10395 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10396 < htab->elf.hgot->root.u.def.section->size);
10397 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10398 }
3b36f7e6 10399
e87d4038 10400 if (sdyn != NULL)
e79f5955
AM
10401 {
10402 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10403 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10404 < htab->elf.hgot->root.u.def.section->size);
10405 bfd_put_32 (output_bfd, val, p);
10406 }
e87d4038
AM
10407 }
10408 else
10409 {
695344c0 10410 /* xgettext:c-format */
cf97bcb0
AM
10411 _bfd_error_handler (_("%s not defined in linker created %pA"),
10412 htab->elf.hgot->root.root.string,
10413 (htab->elf.sgotplt != NULL
10414 ? htab->elf.sgotplt : htab->elf.sgot));
e87d4038
AM
10415 bfd_set_error (bfd_error_bad_value);
10416 ret = FALSE;
10417 }
25dbc73a 10418
ce558b89 10419 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
25dbc73a
AM
10420 }
10421
9d8504b1 10422 /* Fill in the first entry in the VxWorks procedure linkage table. */
6528b6eb
AM
10423 if (htab->is_vxworks
10424 && htab->elf.splt != NULL
10425 && htab->elf.splt->size != 0
10426 && htab->elf.splt->output_section != bfd_abs_section_ptr)
9d8504b1 10427 {
6528b6eb 10428 asection *splt = htab->elf.splt;
9d8504b1 10429 /* Use the right PLT. */
0e1862bb 10430 const bfd_vma *plt_entry = (bfd_link_pic (info)
5b914448
AM
10431 ? ppc_elf_vxworks_pic_plt0_entry
10432 : ppc_elf_vxworks_plt0_entry);
9d8504b1 10433
0e1862bb 10434 if (!bfd_link_pic (info))
9d8504b1 10435 {
e87d4038 10436 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 10437
e87d4038 10438 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 10439 splt->contents + 0);
e87d4038 10440 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
10441 splt->contents + 4);
10442 }
10443 else
10444 {
10445 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10446 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10447 }
10448 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10449 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10450 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10451 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10452 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10453 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10454
0e1862bb 10455 if (! bfd_link_pic (info))
9d8504b1
PB
10456 {
10457 Elf_Internal_Rela rela;
10458 bfd_byte *loc;
10459
10460 loc = htab->srelplt2->contents;
10461
10462 /* Output the @ha relocation for the first instruction. */
ce558b89
AM
10463 rela.r_offset = (htab->elf.splt->output_section->vma
10464 + htab->elf.splt->output_offset
9d8504b1 10465 + 2);
636ce3f5 10466 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10467 rela.r_addend = 0;
10468 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10469 loc += sizeof (Elf32_External_Rela);
5b914448 10470
9d8504b1 10471 /* Output the @l relocation for the second instruction. */
ce558b89
AM
10472 rela.r_offset = (htab->elf.splt->output_section->vma
10473 + htab->elf.splt->output_offset
9d8504b1 10474 + 6);
636ce3f5 10475 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10476 rela.r_addend = 0;
10477 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10478 loc += sizeof (Elf32_External_Rela);
10479
10480 /* Fix up the remaining relocations. They may have the wrong
10481 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10482 in which symbols were output. */
10483 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10484 {
10485 Elf_Internal_Rela rel;
10486
10487 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10488 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10489 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10490 loc += sizeof (Elf32_External_Rela);
10491
10492 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10493 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10494 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10495 loc += sizeof (Elf32_External_Rela);
10496
10497 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 10498 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
10499 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10500 loc += sizeof (Elf32_External_Rela);
10501 }
10502 }
10503 }
10504
e054468f
AM
10505 if (htab->glink != NULL
10506 && htab->glink->contents != NULL
10507 && htab->elf.dynamic_sections_created)
d7128ce4
AM
10508 {
10509 unsigned char *p;
10510 unsigned char *endp;
a6aa5195 10511 bfd_vma res0;
a6aa5195
AM
10512
10513 /*
10514 * PIC glink code is the following:
10515 *
10516 * # ith PLT code stub.
10517 * addis 11,30,(plt+(i-1)*4-got)@ha
10518 * lwz 11,(plt+(i-1)*4-got)@l(11)
10519 * mtctr 11
10520 * bctr
10521 *
10522 * # A table of branches, one for each plt entry.
176a0d42 10523 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
10524 * # addresses, so (r11 - res_0) gives the plt index * 4.
10525 * res_0: b PLTresolve
10526 * res_1: b PLTresolve
10527 * .
10528 * # Some number of entries towards the end can be nops
10529 * res_n_m3: nop
10530 * res_n_m2: nop
10531 * res_n_m1:
10532 *
10533 * PLTresolve:
10534 * addis 11,11,(1f-res_0)@ha
10535 * mflr 0
10536 * bcl 20,31,1f
10537 * 1: addi 11,11,(1b-res_0)@l
10538 * mflr 12
10539 * mtlr 0
07d6d2b8 10540 * sub 11,11,12 # r11 = index * 4
a6aa5195 10541 * addis 12,12,(got+4-1b)@ha
07d6d2b8
AM
10542 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10543 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
a6aa5195
AM
10544 * mtctr 0
10545 * add 0,11,11
07d6d2b8 10546 * add 11,0,11 # r11 = index * 12 = reloc offset.
a6aa5195 10547 * bctr
9e390558 10548 *
176a0d42
AM
10549 * Non-PIC glink code is a little simpler.
10550 *
10551 * # ith PLT code stub.
10552 * lis 11,(plt+(i-1)*4)@ha
10553 * lwz 11,(plt+(i-1)*4)@l(11)
10554 * mtctr 11
10555 * bctr
10556 *
10557 * The branch table is the same, then comes
10558 *
10559 * PLTresolve:
10560 * lis 12,(got+4)@ha
10561 * addis 11,11,(-res_0)@ha
07d6d2b8
AM
10562 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10563 * addi 11,11,(-res_0)@l # r11 = index * 4
176a0d42
AM
10564 * mtctr 0
10565 * add 0,11,11
07d6d2b8
AM
10566 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10567 * add 11,0,11 # r11 = index * 12 = reloc offset.
176a0d42
AM
10568 * bctr
10569 */
7e8aeb9a 10570
a6aa5195 10571 /* Build the branch table, one for each plt entry (less one),
86b9da88 10572 and perhaps some padding. */
a6aa5195
AM
10573 p = htab->glink->contents;
10574 p += htab->glink_pltresolve;
86b9da88
AM
10575 endp = htab->glink->contents;
10576 endp += htab->glink->size - GLINK_PLTRESOLVE;
da3a2088 10577 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
86b9da88
AM
10578 {
10579 bfd_put_32 (output_bfd, B + endp - p, p);
10580 p += 4;
10581 }
10582 while (p < endp)
10583 {
10584 bfd_put_32 (output_bfd, NOP, p);
10585 p += 4;
10586 }
10587
7e8aeb9a 10588 res0 = (htab->glink_pltresolve
86b9da88
AM
10589 + htab->glink->output_section->vma
10590 + htab->glink->output_offset);
10591
da3a2088
AM
10592 if (htab->params->ppc476_workaround)
10593 {
10594 /* Ensure that a call stub at the end of a page doesn't
10595 result in prefetch over the end of the page into the
10596 glink branch table. */
10597 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10598 bfd_vma page_addr;
10599 bfd_vma glink_start = (htab->glink->output_section->vma
10600 + htab->glink->output_offset);
10601
10602 for (page_addr = res0 & -pagesize;
10603 page_addr > glink_start;
10604 page_addr -= pagesize)
10605 {
10606 /* We have a plt call stub that may need fixing. */
10607 bfd_byte *loc;
10608 unsigned int insn;
10609
10610 loc = htab->glink->contents + page_addr - 4 - glink_start;
10611 insn = bfd_get_32 (output_bfd, loc);
10612 if (insn == BCTR)
10613 {
10614 /* By alignment, we know that there must be at least
10615 one other call stub before this one. */
10616 insn = bfd_get_32 (output_bfd, loc - 16);
10617 if (insn == BCTR)
10618 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10619 else
10620 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10621 }
10622 }
10623 }
10624
86b9da88 10625 /* Last comes the PLTresolve stub. */
9e390558 10626 endp = p + GLINK_PLTRESOLVE;
0e1862bb 10627 if (bfd_link_pic (info))
7e8aeb9a 10628 {
a6aa5195 10629 bfd_vma bcl;
d7128ce4 10630
a6aa5195
AM
10631 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10632 + htab->glink->output_section->vma
10633 + htab->glink->output_offset);
10634
9e390558
AM
10635 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (bcl - res0), p);
10636 p += 4;
10637 bfd_put_32 (output_bfd, MFLR_0, p);
10638 p += 4;
10639 bfd_put_32 (output_bfd, BCL_20_31, p);
10640 p += 4;
10641 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (bcl - res0), p);
10642 p += 4;
10643 bfd_put_32 (output_bfd, MFLR_12, p);
10644 p += 4;
10645 bfd_put_32 (output_bfd, MTLR_0, p);
10646 p += 4;
10647 bfd_put_32 (output_bfd, SUB_11_11_12, p);
10648 p += 4;
10649 bfd_put_32 (output_bfd, ADDIS_12_12 + PPC_HA (got + 4 - bcl), p);
10650 p += 4;
a6aa5195
AM
10651 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10652 {
9e390558
AM
10653 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4 - bcl), p);
10654 p += 4;
10655 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8 - bcl), p);
10656 p += 4;
a6aa5195
AM
10657 }
10658 else
10659 {
9e390558
AM
10660 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4 - bcl), p);
10661 p += 4;
10662 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10663 p += 4;
a6aa5195 10664 }
9e390558
AM
10665 bfd_put_32 (output_bfd, MTCTR_0, p);
10666 p += 4;
10667 bfd_put_32 (output_bfd, ADD_0_11_11, p);
7e8aeb9a
AM
10668 }
10669 else
d7128ce4 10670 {
9e390558
AM
10671 bfd_put_32 (output_bfd, LIS_12 + PPC_HA (got + 4), p);
10672 p += 4;
10673 bfd_put_32 (output_bfd, ADDIS_11_11 + PPC_HA (-res0), p);
10674 p += 4;
a6aa5195 10675 if (PPC_HA (got + 4) == PPC_HA (got + 8))
9e390558 10676 bfd_put_32 (output_bfd, LWZ_0_12 + PPC_LO (got + 4), p);
a6aa5195 10677 else
9e390558
AM
10678 bfd_put_32 (output_bfd, LWZU_0_12 + PPC_LO (got + 4), p);
10679 p += 4;
10680 bfd_put_32 (output_bfd, ADDI_11_11 + PPC_LO (-res0), p);
10681 p += 4;
10682 bfd_put_32 (output_bfd, MTCTR_0, p);
10683 p += 4;
10684 bfd_put_32 (output_bfd, ADD_0_11_11, p);
10685 p += 4;
10686 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10687 bfd_put_32 (output_bfd, LWZ_12_12 + PPC_LO (got + 8), p);
10688 else
10689 bfd_put_32 (output_bfd, LWZ_12_12 + 4, p);
10690 }
10691 p += 4;
10692 bfd_put_32 (output_bfd, ADD_11_0_11, p);
10693 p += 4;
407aa07c
AM
10694 bfd_put_32 (output_bfd, BCTR, p);
10695 p += 4;
9e390558
AM
10696 while (p < endp)
10697 {
10698 bfd_put_32 (output_bfd,
10699 htab->params->ppc476_workaround ? BA : NOP, p);
10700 p += 4;
d7128ce4 10701 }
9e390558 10702 BFD_ASSERT (p == endp);
d7128ce4
AM
10703 }
10704
6177242a
AM
10705 if (htab->glink_eh_frame != NULL
10706 && htab->glink_eh_frame->contents != NULL)
10707 {
10708 unsigned char *p = htab->glink_eh_frame->contents;
10709 bfd_vma val;
10710
6177242a
AM
10711 p += sizeof (glink_eh_frame_cie);
10712 /* FDE length. */
6177242a
AM
10713 p += 4;
10714 /* CIE pointer. */
6177242a
AM
10715 p += 4;
10716 /* Offset to .glink. */
10717 val = (htab->glink->output_section->vma
10718 + htab->glink->output_offset);
10719 val -= (htab->glink_eh_frame->output_section->vma
10720 + htab->glink_eh_frame->output_offset);
10721 val -= p - htab->glink_eh_frame->contents;
10722 bfd_put_32 (htab->elf.dynobj, val, p);
6177242a 10723
dbaa2011 10724 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
6177242a
AM
10725 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10726 htab->glink_eh_frame,
10727 htab->glink_eh_frame->contents))
10728 return FALSE;
10729 }
10730
e87d4038 10731 return ret;
25dbc73a 10732}
e1a9cb8e 10733\f
6d00b590 10734#define TARGET_LITTLE_SYM powerpc_elf32_le_vec
252b5132 10735#define TARGET_LITTLE_NAME "elf32-powerpcle"
6d00b590 10736#define TARGET_BIG_SYM powerpc_elf32_vec
252b5132
RH
10737#define TARGET_BIG_NAME "elf32-powerpc"
10738#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 10739#define ELF_TARGET_ID PPC32_ELF_DATA
252b5132 10740#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
10741#ifdef __QNXTARGET__
10742#define ELF_MAXPAGESIZE 0x1000
04c6a44c 10743#define ELF_COMMONPAGESIZE 0x1000
d0facd1b 10744#else
252b5132 10745#define ELF_MAXPAGESIZE 0x10000
04c6a44c 10746#define ELF_COMMONPAGESIZE 0x10000
d0facd1b 10747#endif
b1342370 10748#define ELF_MINPAGESIZE 0x1000
252b5132
RH
10749#define elf_info_to_howto ppc_elf_info_to_howto
10750
10751#ifdef EM_CYGNUS_POWERPC
10752#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10753#endif
10754
10755#ifdef EM_PPC_OLD
10756#define ELF_MACHINE_ALT2 EM_PPC_OLD
10757#endif
10758
10759#define elf_backend_plt_not_loaded 1
5474d94f 10760#define elf_backend_want_dynrelro 1
252b5132 10761#define elf_backend_can_gc_sections 1
51b64d56 10762#define elf_backend_can_refcount 1
b491616a 10763#define elf_backend_rela_normal 1
53291d1f 10764#define elf_backend_caches_rawsize 1
252b5132 10765
43c40ab2 10766#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 10767#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 10768#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 10769#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
b9c361e0 10770#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 10771#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 10772#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 10773#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 10774
feee612b 10775#define elf_backend_object_p ppc_elf_object_p
252b5132 10776#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
252b5132
RH
10777#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10778#define elf_backend_relocate_section ppc_elf_relocate_section
10779#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10780#define elf_backend_check_relocs ppc_elf_check_relocs
c0e331c7 10781#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
7fce784e 10782#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
10783#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10784#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10785#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 10786#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
10787#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10788#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10789#define elf_backend_fake_sections ppc_elf_fake_sections
10790#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
954b63d4 10791#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
c5fccbec
DJ
10792#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10793#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 10794#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 10795#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
10796#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10797#define elf_backend_final_write_processing ppc_elf_final_write_processing
10798#define elf_backend_write_section ppc_elf_write_section
551b43fd 10799#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 10800#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 10801#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 10802#define elf_backend_init_index_section _bfd_elf_init_1_index_section
b9c361e0 10803#define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
252b5132
RH
10804
10805#include "elf32-target.h"
9d8504b1 10806
7b8e7dad
AM
10807/* FreeBSD Target */
10808
10809#undef TARGET_LITTLE_SYM
10810#undef TARGET_LITTLE_NAME
10811
10812#undef TARGET_BIG_SYM
6d00b590 10813#define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
7b8e7dad
AM
10814#undef TARGET_BIG_NAME
10815#define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10816
10817#undef ELF_OSABI
10818#define ELF_OSABI ELFOSABI_FREEBSD
10819
10820#undef elf32_bed
10821#define elf32_bed elf32_powerpc_fbsd_bed
10822
10823#include "elf32-target.h"
10824
9d8504b1
PB
10825/* VxWorks Target */
10826
10827#undef TARGET_LITTLE_SYM
10828#undef TARGET_LITTLE_NAME
10829
10830#undef TARGET_BIG_SYM
6d00b590 10831#define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
9d8504b1
PB
10832#undef TARGET_BIG_NAME
10833#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10834
7b8e7dad
AM
10835#undef ELF_OSABI
10836
d5e3d971
PB
10837/* VxWorks uses the elf default section flags for .plt. */
10838static const struct bfd_elf_special_section *
4aef7643 10839ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
9d8504b1 10840{
d5e3d971
PB
10841 if (sec->name == NULL)
10842 return NULL;
10843
10844 if (strcmp (sec->name, ".plt") == 0)
10845 return _bfd_elf_get_sec_type_attr (abfd, sec);
10846
10847 return ppc_elf_get_sec_type_attr (abfd, sec);
10848}
9d8504b1
PB
10849
10850/* Like ppc_elf_link_hash_table_create, but overrides
10851 appropriately for VxWorks. */
10852static struct bfd_link_hash_table *
10853ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10854{
10855 struct bfd_link_hash_table *ret;
10856
10857 ret = ppc_elf_link_hash_table_create (abfd);
10858 if (ret)
10859 {
10860 struct ppc_elf_link_hash_table *htab
954b63d4 10861 = (struct ppc_elf_link_hash_table *)ret;
9d8504b1 10862 htab->is_vxworks = 1;
4a3dc543 10863 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
10864 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10865 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10866 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10867 }
10868 return ret;
10869}
10870
10871/* Tweak magic VxWorks symbols as they are loaded. */
10872static bfd_boolean
10873ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10874 struct bfd_link_info *info,
10875 Elf_Internal_Sym *sym,
4aef7643
AM
10876 const char **namep,
10877 flagword *flagsp,
9d8504b1
PB
10878 asection **secp,
10879 bfd_vma *valp)
10880{
4aef7643
AM
10881 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10882 valp))
9d8504b1
PB
10883 return FALSE;
10884
4aef7643 10885 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
9d8504b1
PB
10886}
10887
9d8504b1
PB
10888static void
10889ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10890{
4aef7643
AM
10891 ppc_elf_final_write_processing (abfd, linker);
10892 elf_vxworks_final_write_processing (abfd, linker);
9d8504b1
PB
10893}
10894
10895/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10896 define it. */
10897#undef elf_backend_want_plt_sym
10898#define elf_backend_want_plt_sym 1
10899#undef elf_backend_want_got_plt
10900#define elf_backend_want_got_plt 1
10901#undef elf_backend_got_symbol_offset
10902#define elf_backend_got_symbol_offset 0
10903#undef elf_backend_plt_not_loaded
10904#define elf_backend_plt_not_loaded 0
10905#undef elf_backend_plt_readonly
10906#define elf_backend_plt_readonly 1
10907#undef elf_backend_got_header_size
10908#define elf_backend_got_header_size 12
64f52338
AM
10909#undef elf_backend_dtrel_excludes_plt
10910#define elf_backend_dtrel_excludes_plt 1
9d8504b1 10911
468392fb
AM
10912#undef bfd_elf32_get_synthetic_symtab
10913
9d8504b1
PB
10914#undef bfd_elf32_bfd_link_hash_table_create
10915#define bfd_elf32_bfd_link_hash_table_create \
10916 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
10917#undef elf_backend_add_symbol_hook
10918#define elf_backend_add_symbol_hook \
10919 ppc_elf_vxworks_add_symbol_hook
10920#undef elf_backend_link_output_symbol_hook
10921#define elf_backend_link_output_symbol_hook \
9c72ff84 10922 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
10923#undef elf_backend_final_write_processing
10924#define elf_backend_final_write_processing \
10925 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
10926#undef elf_backend_get_sec_type_attr
10927#define elf_backend_get_sec_type_attr \
10928 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
10929#undef elf_backend_emit_relocs
10930#define elf_backend_emit_relocs \
10931 elf_vxworks_emit_relocs
10932
10933#undef elf32_bed
10934#define elf32_bed ppc_elf_vxworks_bed
e054468f 10935#undef elf_backend_post_process_headers
9d8504b1
PB
10936
10937#include "elf32-target.h"
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