bfd_merge_private_bfd_data tidy
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
CommitLineData
252b5132 1/* PowerPC-specific support for 32-bit ELF
6f2750fe 2 Copyright (C) 1994-2016 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"
252b5132 38
b9c361e0
JL
39typedef enum split16_format_type
40{
41 split16a_type = 0,
42 split16d_type
43}
44split16_format_type;
45
f0fe0e16 46/* RELA relocations are used here. */
252b5132 47
252b5132 48static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 50static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 52
70bccea4
AM
53/* Branch prediction bit for branch taken relocs. */
54#define BRANCH_PREDICT_BIT 0x200000
55/* Mask to set RA in memory instructions. */
56#define RA_REGISTER_MASK 0x001f0000
57/* Value to shift register by to insert RA. */
58#define RA_REGISTER_SHIFT 16
252b5132
RH
59
60/* The name of the dynamic interpreter. This is put in the .interp
61 section. */
252b5132
RH
62#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
63
d7128ce4 64/* For old-style PLT. */
252b5132
RH
65/* The number of single-slot PLT entries (the rest use two slots). */
66#define PLT_NUM_SINGLE_ENTRIES 8192
67
d7128ce4 68/* For new-style .glink and .plt. */
a6aa5195 69#define GLINK_PLTRESOLVE 16*4
d7128ce4 70#define GLINK_ENTRY_SIZE 4*4
a7f2871e 71#define TLS_GET_ADDR_GLINK_SIZE 12*4
d7128ce4 72
9d8504b1
PB
73/* VxWorks uses its own plt layout, filled in by the static linker. */
74
75/* The standard VxWorks PLT entry. */
76#define VXWORKS_PLT_ENTRY_SIZE 32
77static const bfd_vma ppc_elf_vxworks_plt_entry
78 [VXWORKS_PLT_ENTRY_SIZE / 4] =
79 {
80 0x3d800000, /* lis r12,0 */
81 0x818c0000, /* lwz r12,0(r12) */
82 0x7d8903a6, /* mtctr r12 */
83 0x4e800420, /* bctr */
84 0x39600000, /* li r11,0 */
85 0x48000000, /* b 14 <.PLT0resolve+0x4> */
86 0x60000000, /* nop */
87 0x60000000, /* nop */
88 };
89static const bfd_vma ppc_elf_vxworks_pic_plt_entry
90 [VXWORKS_PLT_ENTRY_SIZE / 4] =
91 {
92 0x3d9e0000, /* addis r12,r30,0 */
93 0x818c0000, /* lwz r12,0(r12) */
94 0x7d8903a6, /* mtctr r12 */
95 0x4e800420, /* bctr */
96 0x39600000, /* li r11,0 */
97 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
98 0x60000000, /* nop */
99 0x60000000, /* nop */
100 };
101
102/* The initial VxWorks PLT entry. */
103#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
104static const bfd_vma ppc_elf_vxworks_plt0_entry
105 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
106 {
107 0x3d800000, /* lis r12,0 */
108 0x398c0000, /* addi r12,r12,0 */
109 0x800c0008, /* lwz r0,8(r12) */
110 0x7c0903a6, /* mtctr r0 */
111 0x818c0004, /* lwz r12,4(r12) */
112 0x4e800420, /* bctr */
113 0x60000000, /* nop */
114 0x60000000, /* nop */
115 };
116static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
117 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
118 {
119 0x819e0008, /* lwz r12,8(r30) */
120 0x7d8903a6, /* mtctr r12 */
121 0x819e0004, /* lwz r12,4(r30) */
122 0x4e800420, /* bctr */
123 0x60000000, /* nop */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 };
128
129/* For executables, we have some additional relocations in
130 .rela.plt.unloaded, for the kernel loader. */
131
132/* The number of non-JMP_SLOT relocations per PLT0 slot. */
133#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
134/* The number of relocations in the PLTResolve slot. */
135#define VXWORKS_PLTRESOLVE_RELOCS 2
136/* The number of relocations in the PLTResolve slot when when creating
137 a shared library. */
138#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
139
d7128ce4 140/* Some instructions. */
d7128ce4 141#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM
142#define ADDIS_11_30 0x3d7e0000
143#define ADDIS_12_12 0x3d8c0000
d7128ce4 144#define ADDI_11_11 0x396b0000
d7128ce4 145#define ADD_0_11_11 0x7c0b5a14
a7f2871e 146#define ADD_3_12_2 0x7c6c1214
d7128ce4 147#define ADD_11_0_11 0x7d605a14
a6aa5195 148#define B 0x48000000
da3a2088 149#define BA 0x48000002
a6aa5195 150#define BCL_20_31 0x429f0005
d7128ce4 151#define BCTR 0x4e800420
a7f2871e
AM
152#define BEQLR 0x4d820020
153#define CMPWI_11_0 0x2c0b0000
7e8aeb9a
AM
154#define LIS_11 0x3d600000
155#define LIS_12 0x3d800000
a6aa5195
AM
156#define LWZU_0_12 0x840c0000
157#define LWZ_0_12 0x800c0000
a7f2871e 158#define LWZ_11_3 0x81630000
a6aa5195
AM
159#define LWZ_11_11 0x816b0000
160#define LWZ_11_30 0x817e0000
a7f2871e 161#define LWZ_12_3 0x81830000
a6aa5195 162#define LWZ_12_12 0x818c0000
a7f2871e
AM
163#define MR_0_3 0x7c601b78
164#define MR_3_0 0x7c030378
a6aa5195
AM
165#define MFLR_0 0x7c0802a6
166#define MFLR_12 0x7d8802a6
167#define MTCTR_0 0x7c0903a6
168#define MTCTR_11 0x7d6903a6
169#define MTLR_0 0x7c0803a6
170#define NOP 0x60000000
171#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM
172
173/* Offset of tp and dtp pointers from start of TLS block. */
174#define TP_OFFSET 0x7000
175#define DTP_OFFSET 0x8000
e87d4038
AM
176
177/* The value of a defined global symbol. */
178#define SYM_VAL(SYM) \
179 ((SYM)->root.u.def.section->output_section->vma \
180 + (SYM)->root.u.def.section->output_offset \
181 + (SYM)->root.u.def.value)
7fce784e 182\f
e47cd125 183static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 184
8da6118f 185static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH
186 /* This reloc does nothing. */
187 HOWTO (R_PPC_NONE, /* type */
188 0, /* rightshift */
6346d5ca
AM
189 3, /* size (0 = byte, 1 = short, 2 = long) */
190 0, /* bitsize */
b34976b6 191 FALSE, /* pc_relative */
252b5132 192 0, /* bitpos */
86c95733 193 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
194 bfd_elf_generic_reloc, /* special_function */
195 "R_PPC_NONE", /* name */
b34976b6 196 FALSE, /* partial_inplace */
252b5132
RH
197 0, /* src_mask */
198 0, /* dst_mask */
b34976b6 199 FALSE), /* pcrel_offset */
252b5132
RH
200
201 /* A standard 32 bit relocation. */
202 HOWTO (R_PPC_ADDR32, /* type */
203 0, /* rightshift */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
205 32, /* bitsize */
b34976b6 206 FALSE, /* pc_relative */
252b5132 207 0, /* bitpos */
86c95733 208 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
209 bfd_elf_generic_reloc, /* special_function */
210 "R_PPC_ADDR32", /* name */
b34976b6 211 FALSE, /* partial_inplace */
252b5132
RH
212 0, /* src_mask */
213 0xffffffff, /* dst_mask */
b34976b6 214 FALSE), /* pcrel_offset */
252b5132
RH
215
216 /* An absolute 26 bit branch; the lower two bits must be zero.
217 FIXME: we don't check that, we just clear them. */
218 HOWTO (R_PPC_ADDR24, /* type */
219 0, /* rightshift */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
221 26, /* bitsize */
b34976b6 222 FALSE, /* pc_relative */
252b5132 223 0, /* bitpos */
86c95733 224 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
225 bfd_elf_generic_reloc, /* special_function */
226 "R_PPC_ADDR24", /* name */
b34976b6 227 FALSE, /* partial_inplace */
252b5132
RH
228 0, /* src_mask */
229 0x3fffffc, /* dst_mask */
b34976b6 230 FALSE), /* pcrel_offset */
252b5132
RH
231
232 /* A standard 16 bit relocation. */
233 HOWTO (R_PPC_ADDR16, /* type */
234 0, /* rightshift */
235 1, /* size (0 = byte, 1 = short, 2 = long) */
236 16, /* bitsize */
b34976b6 237 FALSE, /* pc_relative */
252b5132
RH
238 0, /* bitpos */
239 complain_overflow_bitfield, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_PPC_ADDR16", /* name */
b34976b6 242 FALSE, /* partial_inplace */
252b5132
RH
243 0, /* src_mask */
244 0xffff, /* dst_mask */
b34976b6 245 FALSE), /* pcrel_offset */
252b5132
RH
246
247 /* A 16 bit relocation without overflow. */
248 HOWTO (R_PPC_ADDR16_LO, /* type */
249 0, /* rightshift */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
251 16, /* bitsize */
b34976b6 252 FALSE, /* pc_relative */
252b5132
RH
253 0, /* bitpos */
254 complain_overflow_dont,/* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_PPC_ADDR16_LO", /* name */
b34976b6 257 FALSE, /* partial_inplace */
252b5132
RH
258 0, /* src_mask */
259 0xffff, /* dst_mask */
b34976b6 260 FALSE), /* pcrel_offset */
252b5132
RH
261
262 /* The high order 16 bits of an address. */
263 HOWTO (R_PPC_ADDR16_HI, /* type */
264 16, /* rightshift */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
266 16, /* bitsize */
b34976b6 267 FALSE, /* pc_relative */
252b5132
RH
268 0, /* bitpos */
269 complain_overflow_dont, /* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_PPC_ADDR16_HI", /* name */
b34976b6 272 FALSE, /* partial_inplace */
252b5132
RH
273 0, /* src_mask */
274 0xffff, /* dst_mask */
b34976b6 275 FALSE), /* pcrel_offset */
252b5132
RH
276
277 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 278 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH
279 HOWTO (R_PPC_ADDR16_HA, /* type */
280 16, /* rightshift */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
b34976b6 283 FALSE, /* pc_relative */
252b5132
RH
284 0, /* bitpos */
285 complain_overflow_dont, /* complain_on_overflow */
286 ppc_elf_addr16_ha_reloc, /* special_function */
287 "R_PPC_ADDR16_HA", /* name */
b34976b6 288 FALSE, /* partial_inplace */
252b5132
RH
289 0, /* src_mask */
290 0xffff, /* dst_mask */
b34976b6 291 FALSE), /* pcrel_offset */
252b5132
RH
292
293 /* An absolute 16 bit branch; the lower two bits must be zero.
294 FIXME: we don't check that, we just clear them. */
295 HOWTO (R_PPC_ADDR14, /* type */
296 0, /* rightshift */
297 2, /* size (0 = byte, 1 = short, 2 = long) */
298 16, /* bitsize */
b34976b6 299 FALSE, /* pc_relative */
252b5132 300 0, /* bitpos */
86c95733 301 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
302 bfd_elf_generic_reloc, /* special_function */
303 "R_PPC_ADDR14", /* name */
b34976b6 304 FALSE, /* partial_inplace */
252b5132
RH
305 0, /* src_mask */
306 0xfffc, /* dst_mask */
b34976b6 307 FALSE), /* pcrel_offset */
252b5132
RH
308
309 /* An absolute 16 bit branch, for which bit 10 should be set to
310 indicate that the branch is expected to be taken. The lower two
8da6118f 311 bits must be zero. */
252b5132
RH
312 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
313 0, /* rightshift */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
315 16, /* bitsize */
b34976b6 316 FALSE, /* pc_relative */
252b5132 317 0, /* bitpos */
86c95733 318 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
319 bfd_elf_generic_reloc, /* special_function */
320 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 321 FALSE, /* partial_inplace */
252b5132
RH
322 0, /* src_mask */
323 0xfffc, /* dst_mask */
b34976b6 324 FALSE), /* pcrel_offset */
252b5132
RH
325
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is not expected to be taken. The lower
328 two bits must be zero. */
329 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
330 0, /* rightshift */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
332 16, /* bitsize */
b34976b6 333 FALSE, /* pc_relative */
252b5132 334 0, /* bitpos */
86c95733 335 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
336 bfd_elf_generic_reloc, /* special_function */
337 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 338 FALSE, /* partial_inplace */
252b5132
RH
339 0, /* src_mask */
340 0xfffc, /* dst_mask */
b34976b6 341 FALSE), /* pcrel_offset */
252b5132 342
8da6118f 343 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH
344 HOWTO (R_PPC_REL24, /* type */
345 0, /* rightshift */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
347 26, /* bitsize */
b34976b6 348 TRUE, /* pc_relative */
252b5132
RH
349 0, /* bitpos */
350 complain_overflow_signed, /* complain_on_overflow */
351 bfd_elf_generic_reloc, /* special_function */
352 "R_PPC_REL24", /* name */
b34976b6 353 FALSE, /* partial_inplace */
252b5132
RH
354 0, /* src_mask */
355 0x3fffffc, /* dst_mask */
b34976b6 356 TRUE), /* pcrel_offset */
252b5132 357
8da6118f 358 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH
359 HOWTO (R_PPC_REL14, /* type */
360 0, /* rightshift */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
362 16, /* bitsize */
b34976b6 363 TRUE, /* pc_relative */
252b5132
RH
364 0, /* bitpos */
365 complain_overflow_signed, /* complain_on_overflow */
366 bfd_elf_generic_reloc, /* special_function */
367 "R_PPC_REL14", /* name */
b34976b6 368 FALSE, /* partial_inplace */
252b5132
RH
369 0, /* src_mask */
370 0xfffc, /* dst_mask */
b34976b6 371 TRUE), /* pcrel_offset */
252b5132 372
8da6118f 373 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
374 the branch is expected to be taken. The lower two bits must be
375 zero. */
376 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
377 0, /* rightshift */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
379 16, /* bitsize */
b34976b6 380 TRUE, /* pc_relative */
252b5132
RH
381 0, /* bitpos */
382 complain_overflow_signed, /* complain_on_overflow */
383 bfd_elf_generic_reloc, /* special_function */
384 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 385 FALSE, /* partial_inplace */
252b5132
RH
386 0, /* src_mask */
387 0xfffc, /* dst_mask */
b34976b6 388 TRUE), /* pcrel_offset */
252b5132 389
8da6118f 390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
391 the branch is not expected to be taken. The lower two bits must
392 be zero. */
393 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
394 0, /* rightshift */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
b34976b6 397 TRUE, /* pc_relative */
252b5132
RH
398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 402 FALSE, /* partial_inplace */
252b5132
RH
403 0, /* src_mask */
404 0xfffc, /* dst_mask */
b34976b6 405 TRUE), /* pcrel_offset */
252b5132
RH
406
407 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
408 symbol. */
409 HOWTO (R_PPC_GOT16, /* type */
410 0, /* rightshift */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
412 16, /* bitsize */
b34976b6 413 FALSE, /* pc_relative */
252b5132
RH
414 0, /* bitpos */
415 complain_overflow_signed, /* complain_on_overflow */
3ce51288 416 ppc_elf_unhandled_reloc, /* special_function */
252b5132 417 "R_PPC_GOT16", /* name */
b34976b6 418 FALSE, /* partial_inplace */
252b5132
RH
419 0, /* src_mask */
420 0xffff, /* dst_mask */
b34976b6 421 FALSE), /* pcrel_offset */
252b5132
RH
422
423 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
424 the symbol. */
425 HOWTO (R_PPC_GOT16_LO, /* type */
426 0, /* rightshift */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
428 16, /* bitsize */
b34976b6 429 FALSE, /* pc_relative */
252b5132
RH
430 0, /* bitpos */
431 complain_overflow_dont, /* complain_on_overflow */
3ce51288 432 ppc_elf_unhandled_reloc, /* special_function */
252b5132 433 "R_PPC_GOT16_LO", /* name */
b34976b6 434 FALSE, /* partial_inplace */
252b5132
RH
435 0, /* src_mask */
436 0xffff, /* dst_mask */
b34976b6 437 FALSE), /* pcrel_offset */
252b5132
RH
438
439 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
440 the symbol. */
441 HOWTO (R_PPC_GOT16_HI, /* type */
442 16, /* rightshift */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
444 16, /* bitsize */
b34976b6 445 FALSE, /* pc_relative */
252b5132 446 0, /* bitpos */
86c95733 447 complain_overflow_dont, /* complain_on_overflow */
3ce51288 448 ppc_elf_unhandled_reloc, /* special_function */
252b5132 449 "R_PPC_GOT16_HI", /* name */
b34976b6 450 FALSE, /* partial_inplace */
252b5132
RH
451 0, /* src_mask */
452 0xffff, /* dst_mask */
b34976b6 453 FALSE), /* pcrel_offset */
252b5132
RH
454
455 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
456 the symbol. */
457 HOWTO (R_PPC_GOT16_HA, /* type */
458 16, /* rightshift */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
b34976b6 461 FALSE, /* pc_relative */
252b5132 462 0, /* bitpos */
86c95733 463 complain_overflow_dont, /* complain_on_overflow */
3ce51288 464 ppc_elf_unhandled_reloc, /* special_function */
252b5132 465 "R_PPC_GOT16_HA", /* name */
b34976b6 466 FALSE, /* partial_inplace */
252b5132
RH
467 0, /* src_mask */
468 0xffff, /* dst_mask */
b34976b6 469 FALSE), /* pcrel_offset */
252b5132
RH
470
471 /* Like R_PPC_REL24, but referring to the procedure linkage table
472 entry for the symbol. */
473 HOWTO (R_PPC_PLTREL24, /* type */
474 0, /* rightshift */
475 2, /* size (0 = byte, 1 = short, 2 = long) */
476 26, /* bitsize */
b34976b6 477 TRUE, /* pc_relative */
252b5132 478 0, /* bitpos */
3ce51288
AM
479 complain_overflow_signed, /* complain_on_overflow */
480 ppc_elf_unhandled_reloc, /* special_function */
252b5132 481 "R_PPC_PLTREL24", /* name */
b34976b6 482 FALSE, /* partial_inplace */
252b5132
RH
483 0, /* src_mask */
484 0x3fffffc, /* dst_mask */
b34976b6 485 TRUE), /* pcrel_offset */
252b5132
RH
486
487 /* This is used only by the dynamic linker. The symbol should exist
488 both in the object being run and in some shared library. The
489 dynamic linker copies the data addressed by the symbol from the
490 shared library into the object, because the object being
491 run has to have the data at some particular address. */
492 HOWTO (R_PPC_COPY, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 32, /* bitsize */
b34976b6 496 FALSE, /* pc_relative */
252b5132 497 0, /* bitpos */
86c95733 498 complain_overflow_dont, /* complain_on_overflow */
3ce51288 499 ppc_elf_unhandled_reloc, /* special_function */
252b5132 500 "R_PPC_COPY", /* name */
b34976b6 501 FALSE, /* partial_inplace */
252b5132
RH
502 0, /* src_mask */
503 0, /* dst_mask */
b34976b6 504 FALSE), /* pcrel_offset */
252b5132
RH
505
506 /* Like R_PPC_ADDR32, but used when setting global offset table
507 entries. */
508 HOWTO (R_PPC_GLOB_DAT, /* type */
509 0, /* rightshift */
510 2, /* size (0 = byte, 1 = short, 2 = long) */
511 32, /* bitsize */
b34976b6 512 FALSE, /* pc_relative */
252b5132 513 0, /* bitpos */
86c95733 514 complain_overflow_dont, /* complain_on_overflow */
3ce51288 515 ppc_elf_unhandled_reloc, /* special_function */
252b5132 516 "R_PPC_GLOB_DAT", /* name */
b34976b6 517 FALSE, /* partial_inplace */
252b5132
RH
518 0, /* src_mask */
519 0xffffffff, /* dst_mask */
b34976b6 520 FALSE), /* pcrel_offset */
252b5132
RH
521
522 /* Marks a procedure linkage table entry for a symbol. */
523 HOWTO (R_PPC_JMP_SLOT, /* type */
524 0, /* rightshift */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
526 32, /* bitsize */
b34976b6 527 FALSE, /* pc_relative */
252b5132 528 0, /* bitpos */
86c95733 529 complain_overflow_dont, /* complain_on_overflow */
3ce51288 530 ppc_elf_unhandled_reloc, /* special_function */
252b5132 531 "R_PPC_JMP_SLOT", /* name */
b34976b6 532 FALSE, /* partial_inplace */
252b5132
RH
533 0, /* src_mask */
534 0, /* dst_mask */
b34976b6 535 FALSE), /* pcrel_offset */
252b5132
RH
536
537 /* Used only by the dynamic linker. When the object is run, this
538 longword is set to the load address of the object, plus the
539 addend. */
540 HOWTO (R_PPC_RELATIVE, /* type */
541 0, /* rightshift */
542 2, /* size (0 = byte, 1 = short, 2 = long) */
543 32, /* bitsize */
b34976b6 544 FALSE, /* pc_relative */
252b5132 545 0, /* bitpos */
86c95733 546 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
547 bfd_elf_generic_reloc, /* special_function */
548 "R_PPC_RELATIVE", /* name */
b34976b6 549 FALSE, /* partial_inplace */
252b5132
RH
550 0, /* src_mask */
551 0xffffffff, /* dst_mask */
b34976b6 552 FALSE), /* pcrel_offset */
252b5132
RH
553
554 /* Like R_PPC_REL24, but uses the value of the symbol within the
555 object rather than the final value. Normally used for
556 _GLOBAL_OFFSET_TABLE_. */
557 HOWTO (R_PPC_LOCAL24PC, /* type */
558 0, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 26, /* bitsize */
b34976b6 561 TRUE, /* pc_relative */
252b5132
RH
562 0, /* bitpos */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC_LOCAL24PC", /* name */
b34976b6 566 FALSE, /* partial_inplace */
252b5132
RH
567 0, /* src_mask */
568 0x3fffffc, /* dst_mask */
b34976b6 569 TRUE), /* pcrel_offset */
252b5132
RH
570
571 /* Like R_PPC_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC_UADDR32, /* type */
573 0, /* rightshift */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
575 32, /* bitsize */
b34976b6 576 FALSE, /* pc_relative */
252b5132 577 0, /* bitpos */
86c95733 578 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC_UADDR32", /* name */
b34976b6 581 FALSE, /* partial_inplace */
252b5132
RH
582 0, /* src_mask */
583 0xffffffff, /* dst_mask */
b34976b6 584 FALSE), /* pcrel_offset */
252b5132
RH
585
586 /* Like R_PPC_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC_UADDR16, /* type */
588 0, /* rightshift */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
590 16, /* bitsize */
b34976b6 591 FALSE, /* pc_relative */
252b5132
RH
592 0, /* bitpos */
593 complain_overflow_bitfield, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC_UADDR16", /* name */
b34976b6 596 FALSE, /* partial_inplace */
252b5132
RH
597 0, /* src_mask */
598 0xffff, /* dst_mask */
b34976b6 599 FALSE), /* pcrel_offset */
252b5132
RH
600
601 /* 32-bit PC relative */
602 HOWTO (R_PPC_REL32, /* type */
603 0, /* rightshift */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
605 32, /* bitsize */
b34976b6 606 TRUE, /* pc_relative */
252b5132 607 0, /* bitpos */
86c95733 608 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_REL32", /* name */
b34976b6 611 FALSE, /* partial_inplace */
252b5132
RH
612 0, /* src_mask */
613 0xffffffff, /* dst_mask */
b34976b6 614 TRUE), /* pcrel_offset */
252b5132
RH
615
616 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 617 FIXME: not supported. */
252b5132
RH
618 HOWTO (R_PPC_PLT32, /* type */
619 0, /* rightshift */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
621 32, /* bitsize */
b34976b6 622 FALSE, /* pc_relative */
252b5132 623 0, /* bitpos */
86c95733 624 complain_overflow_dont, /* complain_on_overflow */
3ce51288 625 ppc_elf_unhandled_reloc, /* special_function */
252b5132 626 "R_PPC_PLT32", /* name */
b34976b6 627 FALSE, /* partial_inplace */
252b5132
RH
628 0, /* src_mask */
629 0, /* dst_mask */
b34976b6 630 FALSE), /* pcrel_offset */
252b5132
RH
631
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 633 FIXME: not supported. */
252b5132
RH
634 HOWTO (R_PPC_PLTREL32, /* type */
635 0, /* rightshift */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
637 32, /* bitsize */
b34976b6 638 TRUE, /* pc_relative */
252b5132 639 0, /* bitpos */
86c95733 640 complain_overflow_dont, /* complain_on_overflow */
3ce51288 641 ppc_elf_unhandled_reloc, /* special_function */
252b5132 642 "R_PPC_PLTREL32", /* name */
b34976b6 643 FALSE, /* partial_inplace */
252b5132
RH
644 0, /* src_mask */
645 0, /* dst_mask */
b34976b6 646 TRUE), /* pcrel_offset */
252b5132
RH
647
648 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
649 the symbol. */
650 HOWTO (R_PPC_PLT16_LO, /* type */
651 0, /* rightshift */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
653 16, /* bitsize */
b34976b6 654 FALSE, /* pc_relative */
252b5132
RH
655 0, /* bitpos */
656 complain_overflow_dont, /* complain_on_overflow */
3ce51288 657 ppc_elf_unhandled_reloc, /* special_function */
252b5132 658 "R_PPC_PLT16_LO", /* name */
b34976b6 659 FALSE, /* partial_inplace */
252b5132
RH
660 0, /* src_mask */
661 0xffff, /* dst_mask */
b34976b6 662 FALSE), /* pcrel_offset */
252b5132
RH
663
664 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
665 the symbol. */
666 HOWTO (R_PPC_PLT16_HI, /* type */
667 16, /* rightshift */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
669 16, /* bitsize */
b34976b6 670 FALSE, /* pc_relative */
252b5132 671 0, /* bitpos */
86c95733 672 complain_overflow_dont, /* complain_on_overflow */
3ce51288 673 ppc_elf_unhandled_reloc, /* special_function */
252b5132 674 "R_PPC_PLT16_HI", /* name */
b34976b6 675 FALSE, /* partial_inplace */
252b5132
RH
676 0, /* src_mask */
677 0xffff, /* dst_mask */
b34976b6 678 FALSE), /* pcrel_offset */
252b5132
RH
679
680 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
681 the symbol. */
682 HOWTO (R_PPC_PLT16_HA, /* type */
683 16, /* rightshift */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
b34976b6 686 FALSE, /* pc_relative */
252b5132 687 0, /* bitpos */
86c95733 688 complain_overflow_dont, /* complain_on_overflow */
3ce51288 689 ppc_elf_unhandled_reloc, /* special_function */
252b5132 690 "R_PPC_PLT16_HA", /* name */
b34976b6 691 FALSE, /* partial_inplace */
252b5132
RH
692 0, /* src_mask */
693 0xffff, /* dst_mask */
b34976b6 694 FALSE), /* pcrel_offset */
252b5132
RH
695
696 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
697 small data items. */
698 HOWTO (R_PPC_SDAREL16, /* type */
699 0, /* rightshift */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
701 16, /* bitsize */
b34976b6 702 FALSE, /* pc_relative */
252b5132
RH
703 0, /* bitpos */
704 complain_overflow_signed, /* complain_on_overflow */
3ce51288 705 ppc_elf_unhandled_reloc, /* special_function */
252b5132 706 "R_PPC_SDAREL16", /* name */
b34976b6 707 FALSE, /* partial_inplace */
252b5132
RH
708 0, /* src_mask */
709 0xffff, /* dst_mask */
b34976b6 710 FALSE), /* pcrel_offset */
252b5132 711
c061c2d8 712 /* 16-bit section relative relocation. */
252b5132
RH
713 HOWTO (R_PPC_SECTOFF, /* type */
714 0, /* rightshift */
c061c2d8
AM
715 1, /* size (0 = byte, 1 = short, 2 = long) */
716 16, /* bitsize */
b34976b6 717 FALSE, /* pc_relative */
252b5132 718 0, /* bitpos */
86c95733 719 complain_overflow_signed, /* complain_on_overflow */
3ce51288 720 ppc_elf_unhandled_reloc, /* special_function */
252b5132 721 "R_PPC_SECTOFF", /* name */
b34976b6 722 FALSE, /* partial_inplace */
252b5132 723 0, /* src_mask */
c061c2d8 724 0xffff, /* dst_mask */
b34976b6 725 FALSE), /* pcrel_offset */
252b5132 726
c3668558 727 /* 16-bit lower half section relative relocation. */
252b5132
RH
728 HOWTO (R_PPC_SECTOFF_LO, /* type */
729 0, /* rightshift */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
731 16, /* bitsize */
b34976b6 732 FALSE, /* pc_relative */
252b5132
RH
733 0, /* bitpos */
734 complain_overflow_dont, /* complain_on_overflow */
3ce51288 735 ppc_elf_unhandled_reloc, /* special_function */
252b5132 736 "R_PPC_SECTOFF_LO", /* name */
b34976b6 737 FALSE, /* partial_inplace */
252b5132
RH
738 0, /* src_mask */
739 0xffff, /* dst_mask */
b34976b6 740 FALSE), /* pcrel_offset */
252b5132 741
c3668558 742 /* 16-bit upper half section relative relocation. */
252b5132
RH
743 HOWTO (R_PPC_SECTOFF_HI, /* type */
744 16, /* rightshift */
745 1, /* size (0 = byte, 1 = short, 2 = long) */
746 16, /* bitsize */
b34976b6 747 FALSE, /* pc_relative */
252b5132 748 0, /* bitpos */
86c95733 749 complain_overflow_dont, /* complain_on_overflow */
3ce51288 750 ppc_elf_unhandled_reloc, /* special_function */
252b5132 751 "R_PPC_SECTOFF_HI", /* name */
b34976b6 752 FALSE, /* partial_inplace */
252b5132
RH
753 0, /* src_mask */
754 0xffff, /* dst_mask */
b34976b6 755 FALSE), /* pcrel_offset */
252b5132 756
c3668558 757 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH
758 HOWTO (R_PPC_SECTOFF_HA, /* type */
759 16, /* rightshift */
760 1, /* size (0 = byte, 1 = short, 2 = long) */
761 16, /* bitsize */
b34976b6 762 FALSE, /* pc_relative */
252b5132 763 0, /* bitpos */
86c95733 764 complain_overflow_dont, /* complain_on_overflow */
3ce51288 765 ppc_elf_unhandled_reloc, /* special_function */
252b5132 766 "R_PPC_SECTOFF_HA", /* name */
b34976b6 767 FALSE, /* partial_inplace */
252b5132
RH
768 0, /* src_mask */
769 0xffff, /* dst_mask */
b34976b6 770 FALSE), /* pcrel_offset */
252b5132 771
727fc41e 772 /* Marker relocs for TLS. */
7619e7c7 773 HOWTO (R_PPC_TLS,
252b5132
RH
774 0, /* rightshift */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
776 32, /* bitsize */
b34976b6 777 FALSE, /* pc_relative */
252b5132 778 0, /* bitpos */
7619e7c7 779 complain_overflow_dont, /* complain_on_overflow */
252b5132 780 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM
781 "R_PPC_TLS", /* name */
782 FALSE, /* partial_inplace */
783 0, /* src_mask */
784 0, /* dst_mask */
785 FALSE), /* pcrel_offset */
786
727fc41e
AM
787 HOWTO (R_PPC_TLSGD,
788 0, /* rightshift */
789 2, /* size (0 = byte, 1 = short, 2 = long) */
790 32, /* bitsize */
791 FALSE, /* pc_relative */
792 0, /* bitpos */
793 complain_overflow_dont, /* complain_on_overflow */
794 bfd_elf_generic_reloc, /* special_function */
795 "R_PPC_TLSGD", /* name */
796 FALSE, /* partial_inplace */
797 0, /* src_mask */
798 0, /* dst_mask */
799 FALSE), /* pcrel_offset */
800
801 HOWTO (R_PPC_TLSLD,
802 0, /* rightshift */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
804 32, /* bitsize */
805 FALSE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_dont, /* complain_on_overflow */
808 bfd_elf_generic_reloc, /* special_function */
809 "R_PPC_TLSLD", /* name */
810 FALSE, /* partial_inplace */
811 0, /* src_mask */
812 0, /* dst_mask */
813 FALSE), /* pcrel_offset */
814
7619e7c7
AM
815 /* Computes the load module index of the load module that contains the
816 definition of its TLS sym. */
817 HOWTO (R_PPC_DTPMOD32,
818 0, /* rightshift */
819 2, /* size (0 = byte, 1 = short, 2 = long) */
820 32, /* bitsize */
821 FALSE, /* pc_relative */
822 0, /* bitpos */
823 complain_overflow_dont, /* complain_on_overflow */
824 ppc_elf_unhandled_reloc, /* special_function */
825 "R_PPC_DTPMOD32", /* name */
b34976b6 826 FALSE, /* partial_inplace */
252b5132
RH
827 0, /* src_mask */
828 0xffffffff, /* dst_mask */
b34976b6 829 FALSE), /* pcrel_offset */
252b5132 830
7619e7c7
AM
831 /* Computes a dtv-relative displacement, the difference between the value
832 of sym+add and the base address of the thread-local storage block that
833 contains the definition of sym, minus 0x8000. */
834 HOWTO (R_PPC_DTPREL32,
835 0, /* rightshift */
836 2, /* size (0 = byte, 1 = short, 2 = long) */
837 32, /* bitsize */
838 FALSE, /* pc_relative */
839 0, /* bitpos */
840 complain_overflow_dont, /* complain_on_overflow */
841 ppc_elf_unhandled_reloc, /* special_function */
842 "R_PPC_DTPREL32", /* name */
843 FALSE, /* partial_inplace */
844 0, /* src_mask */
845 0xffffffff, /* dst_mask */
846 FALSE), /* pcrel_offset */
847
848 /* A 16 bit dtprel reloc. */
849 HOWTO (R_PPC_DTPREL16,
252b5132
RH
850 0, /* rightshift */
851 1, /* size (0 = byte, 1 = short, 2 = long) */
852 16, /* bitsize */
b34976b6 853 FALSE, /* pc_relative */
252b5132 854 0, /* bitpos */
7619e7c7
AM
855 complain_overflow_signed, /* complain_on_overflow */
856 ppc_elf_unhandled_reloc, /* special_function */
857 "R_PPC_DTPREL16", /* name */
b34976b6 858 FALSE, /* partial_inplace */
252b5132
RH
859 0, /* src_mask */
860 0xffff, /* dst_mask */
b34976b6 861 FALSE), /* pcrel_offset */
252b5132 862
7619e7c7
AM
863 /* Like DTPREL16, but no overflow. */
864 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH
865 0, /* rightshift */
866 1, /* size (0 = byte, 1 = short, 2 = long) */
867 16, /* bitsize */
b34976b6 868 FALSE, /* pc_relative */
252b5132 869 0, /* bitpos */
7619e7c7
AM
870 complain_overflow_dont, /* complain_on_overflow */
871 ppc_elf_unhandled_reloc, /* special_function */
872 "R_PPC_DTPREL16_LO", /* name */
b34976b6 873 FALSE, /* partial_inplace */
252b5132
RH
874 0, /* src_mask */
875 0xffff, /* dst_mask */
b34976b6 876 FALSE), /* pcrel_offset */
252b5132 877
7619e7c7
AM
878 /* Like DTPREL16_LO, but next higher group of 16 bits. */
879 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH
880 16, /* rightshift */
881 1, /* size (0 = byte, 1 = short, 2 = long) */
882 16, /* bitsize */
b34976b6 883 FALSE, /* pc_relative */
252b5132
RH
884 0, /* bitpos */
885 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
886 ppc_elf_unhandled_reloc, /* special_function */
887 "R_PPC_DTPREL16_HI", /* name */
b34976b6 888 FALSE, /* partial_inplace */
252b5132
RH
889 0, /* src_mask */
890 0xffff, /* dst_mask */
b34976b6 891 FALSE), /* pcrel_offset */
252b5132 892
7619e7c7
AM
893 /* Like DTPREL16_HI, but adjust for low 16 bits. */
894 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH
895 16, /* rightshift */
896 1, /* size (0 = byte, 1 = short, 2 = long) */
897 16, /* bitsize */
b34976b6 898 FALSE, /* pc_relative */
252b5132
RH
899 0, /* bitpos */
900 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
901 ppc_elf_unhandled_reloc, /* special_function */
902 "R_PPC_DTPREL16_HA", /* name */
b34976b6 903 FALSE, /* partial_inplace */
252b5132
RH
904 0, /* src_mask */
905 0xffff, /* dst_mask */
b34976b6 906 FALSE), /* pcrel_offset */
252b5132 907
7619e7c7
AM
908 /* Computes a tp-relative displacement, the difference between the value of
909 sym+add and the value of the thread pointer (r13). */
910 HOWTO (R_PPC_TPREL32,
911 0, /* rightshift */
912 2, /* size (0 = byte, 1 = short, 2 = long) */
913 32, /* bitsize */
914 FALSE, /* pc_relative */
915 0, /* bitpos */
916 complain_overflow_dont, /* complain_on_overflow */
917 ppc_elf_unhandled_reloc, /* special_function */
918 "R_PPC_TPREL32", /* name */
919 FALSE, /* partial_inplace */
920 0, /* src_mask */
921 0xffffffff, /* dst_mask */
922 FALSE), /* pcrel_offset */
923
924 /* A 16 bit tprel reloc. */
925 HOWTO (R_PPC_TPREL16,
252b5132
RH
926 0, /* rightshift */
927 1, /* size (0 = byte, 1 = short, 2 = long) */
928 16, /* bitsize */
b34976b6 929 FALSE, /* pc_relative */
252b5132 930 0, /* bitpos */
7619e7c7
AM
931 complain_overflow_signed, /* complain_on_overflow */
932 ppc_elf_unhandled_reloc, /* special_function */
933 "R_PPC_TPREL16", /* name */
b34976b6 934 FALSE, /* partial_inplace */
252b5132
RH
935 0, /* src_mask */
936 0xffff, /* dst_mask */
b34976b6 937 FALSE), /* pcrel_offset */
252b5132 938
7619e7c7
AM
939 /* Like TPREL16, but no overflow. */
940 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH
941 0, /* rightshift */
942 1, /* size (0 = byte, 1 = short, 2 = long) */
943 16, /* bitsize */
b34976b6 944 FALSE, /* pc_relative */
252b5132 945 0, /* bitpos */
7619e7c7
AM
946 complain_overflow_dont, /* complain_on_overflow */
947 ppc_elf_unhandled_reloc, /* special_function */
948 "R_PPC_TPREL16_LO", /* name */
b34976b6 949 FALSE, /* partial_inplace */
252b5132
RH
950 0, /* src_mask */
951 0xffff, /* dst_mask */
b34976b6 952 FALSE), /* pcrel_offset */
252b5132 953
7619e7c7
AM
954 /* Like TPREL16_LO, but next higher group of 16 bits. */
955 HOWTO (R_PPC_TPREL16_HI,
956 16, /* rightshift */
957 1, /* size (0 = byte, 1 = short, 2 = long) */
958 16, /* bitsize */
959 FALSE, /* pc_relative */
960 0, /* bitpos */
961 complain_overflow_dont, /* complain_on_overflow */
962 ppc_elf_unhandled_reloc, /* special_function */
963 "R_PPC_TPREL16_HI", /* name */
964 FALSE, /* partial_inplace */
965 0, /* src_mask */
966 0xffff, /* dst_mask */
967 FALSE), /* pcrel_offset */
968
969 /* Like TPREL16_HI, but adjust for low 16 bits. */
970 HOWTO (R_PPC_TPREL16_HA,
971 16, /* rightshift */
972 1, /* size (0 = byte, 1 = short, 2 = long) */
973 16, /* bitsize */
974 FALSE, /* pc_relative */
975 0, /* bitpos */
976 complain_overflow_dont, /* complain_on_overflow */
977 ppc_elf_unhandled_reloc, /* special_function */
978 "R_PPC_TPREL16_HA", /* name */
979 FALSE, /* partial_inplace */
980 0, /* src_mask */
981 0xffff, /* dst_mask */
982 FALSE), /* pcrel_offset */
983
984 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
985 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
986 to the first entry. */
987 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH
988 0, /* rightshift */
989 1, /* size (0 = byte, 1 = short, 2 = long) */
990 16, /* bitsize */
b34976b6 991 FALSE, /* pc_relative */
252b5132
RH
992 0, /* bitpos */
993 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
994 ppc_elf_unhandled_reloc, /* special_function */
995 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 996 FALSE, /* partial_inplace */
252b5132
RH
997 0, /* src_mask */
998 0xffff, /* dst_mask */
b34976b6 999 FALSE), /* pcrel_offset */
252b5132 1000
7619e7c7
AM
1001 /* Like GOT_TLSGD16, but no overflow. */
1002 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 1003 0, /* rightshift */
7619e7c7 1004 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 1005 16, /* bitsize */
b34976b6 1006 FALSE, /* pc_relative */
252b5132 1007 0, /* bitpos */
7619e7c7
AM
1008 complain_overflow_dont, /* complain_on_overflow */
1009 ppc_elf_unhandled_reloc, /* special_function */
1010 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 1011 FALSE, /* partial_inplace */
252b5132
RH
1012 0, /* src_mask */
1013 0xffff, /* dst_mask */
b34976b6 1014 FALSE), /* pcrel_offset */
252b5132 1015
7619e7c7
AM
1016 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1017 HOWTO (R_PPC_GOT_TLSGD16_HI,
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1020 16, /* bitsize */
1021 FALSE, /* pc_relative */
1022 0, /* bitpos */
1023 complain_overflow_dont, /* complain_on_overflow */
1024 ppc_elf_unhandled_reloc, /* special_function */
1025 "R_PPC_GOT_TLSGD16_HI", /* name */
1026 FALSE, /* partial_inplace */
1027 0, /* src_mask */
1028 0xffff, /* dst_mask */
1029 FALSE), /* pcrel_offset */
252b5132 1030
7619e7c7
AM
1031 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1032 HOWTO (R_PPC_GOT_TLSGD16_HA,
1033 16, /* rightshift */
1034 1, /* size (0 = byte, 1 = short, 2 = long) */
1035 16, /* bitsize */
1036 FALSE, /* pc_relative */
1037 0, /* bitpos */
1038 complain_overflow_dont, /* complain_on_overflow */
1039 ppc_elf_unhandled_reloc, /* special_function */
1040 "R_PPC_GOT_TLSGD16_HA", /* name */
1041 FALSE, /* partial_inplace */
1042 0, /* src_mask */
1043 0xffff, /* dst_mask */
1044 FALSE), /* pcrel_offset */
1045
1046 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1047 with values (sym+add)@dtpmod and zero, and computes the offset to the
1048 first entry. */
1049 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH
1050 0, /* rightshift */
1051 1, /* size (0 = byte, 1 = short, 2 = long) */
1052 16, /* bitsize */
7619e7c7 1053 FALSE, /* pc_relative */
252b5132
RH
1054 0, /* bitpos */
1055 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1056 ppc_elf_unhandled_reloc, /* special_function */
1057 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1058 FALSE, /* partial_inplace */
252b5132
RH
1059 0, /* src_mask */
1060 0xffff, /* dst_mask */
b34976b6 1061 FALSE), /* pcrel_offset */
252b5132 1062
7619e7c7
AM
1063 /* Like GOT_TLSLD16, but no overflow. */
1064 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1065 0, /* rightshift */
7619e7c7
AM
1066 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 16, /* bitsize */
b34976b6 1068 FALSE, /* pc_relative */
252b5132
RH
1069 0, /* bitpos */
1070 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1071 ppc_elf_unhandled_reloc, /* special_function */
1072 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1073 FALSE, /* partial_inplace */
252b5132 1074 0, /* src_mask */
7619e7c7 1075 0xffff, /* dst_mask */
b34976b6 1076 FALSE), /* pcrel_offset */
252b5132 1077
7619e7c7
AM
1078 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1079 HOWTO (R_PPC_GOT_TLSLD16_HI,
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 16, /* bitsize */
b34976b6 1083 FALSE, /* pc_relative */
252b5132
RH
1084 0, /* bitpos */
1085 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1086 ppc_elf_unhandled_reloc, /* special_function */
1087 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1088 FALSE, /* partial_inplace */
252b5132 1089 0, /* src_mask */
7619e7c7 1090 0xffff, /* dst_mask */
b34976b6 1091 FALSE), /* pcrel_offset */
252b5132 1092
7619e7c7
AM
1093 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1094 HOWTO (R_PPC_GOT_TLSLD16_HA,
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1097 16, /* bitsize */
1098 FALSE, /* pc_relative */
1099 0, /* bitpos */
1100 complain_overflow_dont, /* complain_on_overflow */
1101 ppc_elf_unhandled_reloc, /* special_function */
1102 "R_PPC_GOT_TLSLD16_HA", /* name */
1103 FALSE, /* partial_inplace */
1104 0, /* src_mask */
1105 0xffff, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1107
1108 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1109 the offset to the entry. */
1110 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH
1111 0, /* rightshift */
1112 1, /* size (0 = byte, 1 = short, 2 = long) */
1113 16, /* bitsize */
b34976b6 1114 FALSE, /* pc_relative */
252b5132
RH
1115 0, /* bitpos */
1116 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1117 ppc_elf_unhandled_reloc, /* special_function */
1118 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1119 FALSE, /* partial_inplace */
252b5132
RH
1120 0, /* src_mask */
1121 0xffff, /* dst_mask */
b34976b6 1122 FALSE), /* pcrel_offset */
252b5132 1123
7619e7c7
AM
1124 /* Like GOT_DTPREL16, but no overflow. */
1125 HOWTO (R_PPC_GOT_DTPREL16_LO,
1126 0, /* rightshift */
1127 1, /* size (0 = byte, 1 = short, 2 = long) */
1128 16, /* bitsize */
1129 FALSE, /* pc_relative */
1130 0, /* bitpos */
1131 complain_overflow_dont, /* complain_on_overflow */
1132 ppc_elf_unhandled_reloc, /* special_function */
1133 "R_PPC_GOT_DTPREL16_LO", /* name */
1134 FALSE, /* partial_inplace */
1135 0, /* src_mask */
1136 0xffff, /* dst_mask */
1137 FALSE), /* pcrel_offset */
252b5132 1138
7619e7c7
AM
1139 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1140 HOWTO (R_PPC_GOT_DTPREL16_HI,
1141 16, /* rightshift */
1142 1, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 ppc_elf_unhandled_reloc, /* special_function */
1148 "R_PPC_GOT_DTPREL16_HI", /* name */
1149 FALSE, /* partial_inplace */
1150 0, /* src_mask */
1151 0xffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
252b5132 1153
7619e7c7
AM
1154 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1155 HOWTO (R_PPC_GOT_DTPREL16_HA,
1156 16, /* rightshift */
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1158 16, /* bitsize */
1159 FALSE, /* pc_relative */
1160 0, /* bitpos */
1161 complain_overflow_dont, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc, /* special_function */
1163 "R_PPC_GOT_DTPREL16_HA", /* name */
1164 FALSE, /* partial_inplace */
1165 0, /* src_mask */
1166 0xffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
c3668558 1168
7619e7c7
AM
1169 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1170 offset to the entry. */
1171 HOWTO (R_PPC_GOT_TPREL16,
1172 0, /* rightshift */
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1174 16, /* bitsize */
1175 FALSE, /* pc_relative */
1176 0, /* bitpos */
1177 complain_overflow_signed, /* complain_on_overflow */
1178 ppc_elf_unhandled_reloc, /* special_function */
1179 "R_PPC_GOT_TPREL16", /* name */
1180 FALSE, /* partial_inplace */
1181 0, /* src_mask */
1182 0xffff, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1184
1185 /* Like GOT_TPREL16, but no overflow. */
1186 HOWTO (R_PPC_GOT_TPREL16_LO,
1187 0, /* rightshift */
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1189 16, /* bitsize */
1190 FALSE, /* pc_relative */
1191 0, /* bitpos */
1192 complain_overflow_dont, /* complain_on_overflow */
1193 ppc_elf_unhandled_reloc, /* special_function */
1194 "R_PPC_GOT_TPREL16_LO", /* name */
1195 FALSE, /* partial_inplace */
1196 0, /* src_mask */
1197 0xffff, /* dst_mask */
1198 FALSE), /* pcrel_offset */
1199
1200 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1201 HOWTO (R_PPC_GOT_TPREL16_HI,
1202 16, /* rightshift */
1203 1, /* size (0 = byte, 1 = short, 2 = long) */
1204 16, /* bitsize */
1205 FALSE, /* pc_relative */
1206 0, /* bitpos */
1207 complain_overflow_dont, /* complain_on_overflow */
1208 ppc_elf_unhandled_reloc, /* special_function */
1209 "R_PPC_GOT_TPREL16_HI", /* name */
1210 FALSE, /* partial_inplace */
1211 0, /* src_mask */
1212 0xffff, /* dst_mask */
1213 FALSE), /* pcrel_offset */
1214
1215 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1216 HOWTO (R_PPC_GOT_TPREL16_HA,
1217 16, /* rightshift */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1219 16, /* bitsize */
1220 FALSE, /* pc_relative */
1221 0, /* bitpos */
1222 complain_overflow_dont, /* complain_on_overflow */
1223 ppc_elf_unhandled_reloc, /* special_function */
1224 "R_PPC_GOT_TPREL16_HA", /* name */
1225 FALSE, /* partial_inplace */
1226 0, /* src_mask */
1227 0xffff, /* dst_mask */
1228 FALSE), /* pcrel_offset */
1229
1230 /* The remaining relocs are from the Embedded ELF ABI, and are not
1231 in the SVR4 ELF ABI. */
1232
1233 /* 32 bit value resulting from the addend minus the symbol. */
1234 HOWTO (R_PPC_EMB_NADDR32, /* type */
1235 0, /* rightshift */
1236 2, /* size (0 = byte, 1 = short, 2 = long) */
1237 32, /* bitsize */
1238 FALSE, /* pc_relative */
1239 0, /* bitpos */
86c95733 1240 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1241 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1242 "R_PPC_EMB_NADDR32", /* name */
1243 FALSE, /* partial_inplace */
1244 0, /* src_mask */
1245 0xffffffff, /* dst_mask */
1246 FALSE), /* pcrel_offset */
1247
1248 /* 16 bit value resulting from the addend minus the symbol. */
1249 HOWTO (R_PPC_EMB_NADDR16, /* type */
1250 0, /* rightshift */
1251 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 16, /* bitsize */
1253 FALSE, /* pc_relative */
1254 0, /* bitpos */
86c95733 1255 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1256 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1257 "R_PPC_EMB_NADDR16", /* name */
1258 FALSE, /* partial_inplace */
1259 0, /* src_mask */
1260 0xffff, /* dst_mask */
1261 FALSE), /* pcrel_offset */
1262
1263 /* 16 bit value resulting from the addend minus the symbol. */
1264 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1265 0, /* rightshift */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 16, /* bitsize */
1268 FALSE, /* pc_relative */
1269 0, /* bitpos */
1270 complain_overflow_dont,/* complain_on_overflow */
3ce51288 1271 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1272 "R_PPC_EMB_ADDR16_LO", /* name */
1273 FALSE, /* partial_inplace */
1274 0, /* src_mask */
1275 0xffff, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1277
1278 /* The high order 16 bits of the addend minus the symbol. */
1279 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1280 16, /* rightshift */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1282 16, /* bitsize */
1283 FALSE, /* pc_relative */
1284 0, /* bitpos */
1285 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1286 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1287 "R_PPC_EMB_NADDR16_HI", /* name */
1288 FALSE, /* partial_inplace */
1289 0, /* src_mask */
1290 0xffff, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1292
1293 /* The high order 16 bits of the result of the addend minus the address,
1294 plus 1 if the contents of the low 16 bits, treated as a signed number,
1295 is negative. */
1296 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1297 16, /* rightshift */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1299 16, /* bitsize */
1300 FALSE, /* pc_relative */
1301 0, /* bitpos */
1302 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1303 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1304 "R_PPC_EMB_NADDR16_HA", /* name */
1305 FALSE, /* partial_inplace */
1306 0, /* src_mask */
1307 0xffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1309
1310 /* 16 bit value resulting from allocating a 4 byte word to hold an
1311 address in the .sdata section, and returning the offset from
1312 _SDA_BASE_ for that relocation. */
1313 HOWTO (R_PPC_EMB_SDAI16, /* type */
1314 0, /* rightshift */
1315 1, /* size (0 = byte, 1 = short, 2 = long) */
1316 16, /* bitsize */
1317 FALSE, /* pc_relative */
1318 0, /* bitpos */
bd6c6e2b 1319 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1320 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1321 "R_PPC_EMB_SDAI16", /* name */
1322 FALSE, /* partial_inplace */
1323 0, /* src_mask */
1324 0xffff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1326
1327 /* 16 bit value resulting from allocating a 4 byte word to hold an
1328 address in the .sdata2 section, and returning the offset from
1329 _SDA2_BASE_ for that relocation. */
1330 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1331 0, /* rightshift */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1333 16, /* bitsize */
1334 FALSE, /* pc_relative */
1335 0, /* bitpos */
bd6c6e2b 1336 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1337 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1338 "R_PPC_EMB_SDA2I16", /* name */
1339 FALSE, /* partial_inplace */
1340 0, /* src_mask */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1343
1344 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1345 small data items. */
1346 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1347 0, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1349 16, /* bitsize */
1350 FALSE, /* pc_relative */
1351 0, /* bitpos */
1352 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1353 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1354 "R_PPC_EMB_SDA2REL", /* name */
1355 FALSE, /* partial_inplace */
1356 0, /* src_mask */
1357 0xffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1359
1360 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1361 signed offset from the appropriate base, and filling in the register
1362 field with the appropriate register (0, 2, or 13). */
1363 HOWTO (R_PPC_EMB_SDA21, /* type */
1364 0, /* rightshift */
1365 2, /* size (0 = byte, 1 = short, 2 = long) */
1366 16, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1370 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1371 "R_PPC_EMB_SDA21", /* name */
1372 FALSE, /* partial_inplace */
1373 0, /* src_mask */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376
1377 /* Relocation not handled: R_PPC_EMB_MRKREF */
1378 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1379 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1380 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1382 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1383
1384 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1385 in the 16 bit signed offset from the appropriate base, and filling in the
1386 register field with the appropriate register (0, 2, or 13). */
1387 HOWTO (R_PPC_EMB_RELSDA, /* type */
1388 0, /* rightshift */
1389 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 16, /* bitsize */
ddfd6795 1391 FALSE, /* pc_relative */
25dbc73a
AM
1392 0, /* bitpos */
1393 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1394 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1395 "R_PPC_EMB_RELSDA", /* name */
1396 FALSE, /* partial_inplace */
1397 0, /* src_mask */
1398 0xffff, /* dst_mask */
1399 FALSE), /* pcrel_offset */
1400
b9c361e0
JL
1401 /* A relative 8 bit branch. */
1402 HOWTO (R_PPC_VLE_REL8, /* type */
1403 1, /* rightshift */
1404 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 8, /* bitsize */
1406 TRUE, /* pc_relative */
1407 0, /* bitpos */
1408 complain_overflow_signed, /* complain_on_overflow */
1409 bfd_elf_generic_reloc, /* special_function */
1410 "R_PPC_VLE_REL8", /* name */
1411 FALSE, /* partial_inplace */
1412 0, /* src_mask */
1413 0xff, /* dst_mask */
1414 TRUE), /* pcrel_offset */
68ffbac6 1415
b9c361e0
JL
1416 /* A relative 15 bit branch. */
1417 HOWTO (R_PPC_VLE_REL15, /* type */
1418 1, /* rightshift */
1419 2, /* size (0 = byte, 1 = short, 2 = long) */
1420 15, /* bitsize */
1421 TRUE, /* pc_relative */
1422 1, /* bitpos */
1423 complain_overflow_signed, /* complain_on_overflow */
1424 bfd_elf_generic_reloc, /* special_function */
1425 "R_PPC_VLE_REL15", /* name */
1426 FALSE, /* partial_inplace */
1427 0, /* src_mask */
dfdaec14 1428 0xfffe, /* dst_mask */
b9c361e0
JL
1429 TRUE), /* pcrel_offset */
1430
68ffbac6 1431 /* A relative 24 bit branch. */
b9c361e0
JL
1432 HOWTO (R_PPC_VLE_REL24, /* type */
1433 1, /* rightshift */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1435 24, /* bitsize */
1436 TRUE, /* pc_relative */
1437 1, /* bitpos */
1438 complain_overflow_signed, /* complain_on_overflow */
1439 bfd_elf_generic_reloc, /* special_function */
1440 "R_PPC_VLE_REL24", /* name */
1441 FALSE, /* partial_inplace */
1442 0, /* src_mask */
1443 0x1fffffe, /* dst_mask */
1444 TRUE), /* pcrel_offset */
1445
1446 /* The 16 LSBS in split16a format. */
1447 HOWTO (R_PPC_VLE_LO16A, /* type */
1448 0, /* rightshift */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1450 16, /* bitsize */
bdaacd3a 1451 FALSE, /* pc_relative */
b9c361e0 1452 0, /* bitpos */
86c95733 1453 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1454 ppc_elf_unhandled_reloc, /* special_function */
b9c361e0
JL
1455 "R_PPC_VLE_LO16A", /* name */
1456 FALSE, /* partial_inplace */
1457 0, /* src_mask */
bdaacd3a 1458 0x1f007ff, /* dst_mask */
b9c361e0
JL
1459 FALSE), /* pcrel_offset */
1460
1461 /* The 16 LSBS in split16d format. */
1462 HOWTO (R_PPC_VLE_LO16D, /* type */
1463 0, /* rightshift */
1464 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1465 16, /* bitsize */
b9c361e0
JL
1466 FALSE, /* pc_relative */
1467 0, /* bitpos */
86c95733 1468 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1469 ppc_elf_unhandled_reloc, /* special_function */
1470 "R_PPC_VLE_LO16D", /* name */
b9c361e0
JL
1471 FALSE, /* partial_inplace */
1472 0, /* src_mask */
1473 0x1f07ff, /* dst_mask */
1474 FALSE), /* pcrel_offset */
1475
1476 /* Bits 16-31 split16a format. */
1477 HOWTO (R_PPC_VLE_HI16A, /* type */
86c95733 1478 16, /* rightshift */
b9c361e0 1479 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1480 16, /* bitsize */
b9c361e0
JL
1481 FALSE, /* pc_relative */
1482 0, /* bitpos */
86c95733 1483 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1484 ppc_elf_unhandled_reloc, /* special_function */
1485 "R_PPC_VLE_HI16A", /* name */
b9c361e0
JL
1486 FALSE, /* partial_inplace */
1487 0, /* src_mask */
bdaacd3a 1488 0x1f007ff, /* dst_mask */
b9c361e0
JL
1489 FALSE), /* pcrel_offset */
1490
1491 /* Bits 16-31 split16d format. */
1492 HOWTO (R_PPC_VLE_HI16D, /* type */
86c95733 1493 16, /* rightshift */
b9c361e0 1494 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1495 16, /* bitsize */
b9c361e0
JL
1496 FALSE, /* pc_relative */
1497 0, /* bitpos */
86c95733 1498 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1499 ppc_elf_unhandled_reloc, /* special_function */
1500 "R_PPC_VLE_HI16D", /* name */
b9c361e0
JL
1501 FALSE, /* partial_inplace */
1502 0, /* src_mask */
1503 0x1f07ff, /* dst_mask */
1504 FALSE), /* pcrel_offset */
1505
1506 /* Bits 16-31 (High Adjusted) in split16a format. */
1507 HOWTO (R_PPC_VLE_HA16A, /* type */
86c95733 1508 16, /* rightshift */
b9c361e0 1509 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1510 16, /* bitsize */
b9c361e0
JL
1511 FALSE, /* pc_relative */
1512 0, /* bitpos */
86c95733 1513 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1514 ppc_elf_unhandled_reloc, /* special_function */
1515 "R_PPC_VLE_HA16A", /* name */
b9c361e0
JL
1516 FALSE, /* partial_inplace */
1517 0, /* src_mask */
bdaacd3a 1518 0x1f007ff, /* dst_mask */
b9c361e0
JL
1519 FALSE), /* pcrel_offset */
1520
1521 /* Bits 16-31 (High Adjusted) in split16d format. */
1522 HOWTO (R_PPC_VLE_HA16D, /* type */
86c95733 1523 16, /* rightshift */
b9c361e0 1524 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1525 16, /* bitsize */
b9c361e0
JL
1526 FALSE, /* pc_relative */
1527 0, /* bitpos */
86c95733 1528 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1529 ppc_elf_unhandled_reloc, /* special_function */
1530 "R_PPC_VLE_HA16D", /* name */
b9c361e0
JL
1531 FALSE, /* partial_inplace */
1532 0, /* src_mask */
1533 0x1f07ff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1535
86c95733
AM
1536 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1537 instructions. If the register base is 0 then the linker changes
1538 the e_add16i to an e_li instruction. */
1539 HOWTO (R_PPC_VLE_SDA21, /* type */
b9c361e0
JL
1540 0, /* rightshift */
1541 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1542 16, /* bitsize */
b9c361e0
JL
1543 FALSE, /* pc_relative */
1544 0, /* bitpos */
86c95733 1545 complain_overflow_signed, /* complain_on_overflow */
3ce51288
AM
1546 ppc_elf_unhandled_reloc, /* special_function */
1547 "R_PPC_VLE_SDA21", /* name */
b9c361e0
JL
1548 FALSE, /* partial_inplace */
1549 0, /* src_mask */
1550 0xffff, /* dst_mask */
1551 FALSE), /* pcrel_offset */
1552
86c95733 1553 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
b9c361e0
JL
1554 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1555 0, /* rightshift */
1556 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1557 16, /* bitsize */
b9c361e0
JL
1558 FALSE, /* pc_relative */
1559 0, /* bitpos */
86c95733 1560 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1561 ppc_elf_unhandled_reloc, /* special_function */
b9c361e0
JL
1562 "R_PPC_VLE_SDA21_LO", /* name */
1563 FALSE, /* partial_inplace */
1564 0, /* src_mask */
86c95733 1565 0xffff, /* dst_mask */
b9c361e0
JL
1566 FALSE), /* pcrel_offset */
1567
1568 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1569 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1570 0, /* rightshift */
1571 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1572 16, /* bitsize */
b9c361e0
JL
1573 FALSE, /* pc_relative */
1574 0, /* bitpos */
3ce51288
AM
1575 complain_overflow_dont, /* complain_on_overflow */
1576 ppc_elf_unhandled_reloc, /* special_function */
1577 "R_PPC_VLE_SDAREL_LO16A", /* name */
b9c361e0
JL
1578 FALSE, /* partial_inplace */
1579 0, /* src_mask */
bdaacd3a 1580 0x1f007ff, /* dst_mask */
b9c361e0
JL
1581 FALSE), /* pcrel_offset */
1582
1583 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
b9c361e0
JL
1584 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1585 0, /* rightshift */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1587 16, /* bitsize */
b9c361e0
JL
1588 FALSE, /* pc_relative */
1589 0, /* bitpos */
3ce51288
AM
1590 complain_overflow_dont, /* complain_on_overflow */
1591 ppc_elf_unhandled_reloc, /* special_function */
1592 "R_PPC_VLE_SDAREL_LO16D", /* name */
b9c361e0
JL
1593 FALSE, /* partial_inplace */
1594 0, /* src_mask */
1595 0x1f07ff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1597
1598 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
3ce51288 1599 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
86c95733 1600 16, /* rightshift */
b9c361e0 1601 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1602 16, /* bitsize */
b9c361e0
JL
1603 FALSE, /* pc_relative */
1604 0, /* bitpos */
3ce51288
AM
1605 complain_overflow_dont, /* complain_on_overflow */
1606 ppc_elf_unhandled_reloc, /* special_function */
1607 "R_PPC_VLE_SDAREL_HI16A", /* name */
b9c361e0
JL
1608 FALSE, /* partial_inplace */
1609 0, /* src_mask */
bdaacd3a 1610 0x1f007ff, /* dst_mask */
b9c361e0
JL
1611 FALSE), /* pcrel_offset */
1612
1613 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
3ce51288 1614 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
86c95733 1615 16, /* rightshift */
b9c361e0 1616 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1617 16, /* bitsize */
b9c361e0
JL
1618 FALSE, /* pc_relative */
1619 0, /* bitpos */
3ce51288
AM
1620 complain_overflow_dont, /* complain_on_overflow */
1621 ppc_elf_unhandled_reloc, /* special_function */
1622 "R_PPC_VLE_SDAREL_HI16D", /* name */
b9c361e0
JL
1623 FALSE, /* partial_inplace */
1624 0, /* src_mask */
1625 0x1f07ff, /* dst_mask */
1626 FALSE), /* pcrel_offset */
1627
1628 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
3ce51288 1629 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
86c95733 1630 16, /* rightshift */
b9c361e0 1631 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1632 16, /* bitsize */
b9c361e0
JL
1633 FALSE, /* pc_relative */
1634 0, /* bitpos */
3ce51288
AM
1635 complain_overflow_dont, /* complain_on_overflow */
1636 ppc_elf_unhandled_reloc, /* special_function */
1637 "R_PPC_VLE_SDAREL_HA16A", /* name */
b9c361e0
JL
1638 FALSE, /* partial_inplace */
1639 0, /* src_mask */
bdaacd3a 1640 0x1f007ff, /* dst_mask */
b9c361e0
JL
1641 FALSE), /* pcrel_offset */
1642
1643 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
3ce51288 1644 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
86c95733 1645 16, /* rightshift */
b9c361e0 1646 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1647 16, /* bitsize */
b9c361e0
JL
1648 FALSE, /* pc_relative */
1649 0, /* bitpos */
3ce51288
AM
1650 complain_overflow_dont, /* complain_on_overflow */
1651 ppc_elf_unhandled_reloc, /* special_function */
1652 "R_PPC_VLE_SDAREL_HA16D", /* name */
b9c361e0
JL
1653 FALSE, /* partial_inplace */
1654 0, /* src_mask */
1655 0x1f07ff, /* dst_mask */
1656 FALSE), /* pcrel_offset */
1657
e054468f
AM
1658 HOWTO (R_PPC_IRELATIVE, /* type */
1659 0, /* rightshift */
1660 2, /* size (0 = byte, 1 = short, 2 = long) */
1661 32, /* bitsize */
1662 FALSE, /* pc_relative */
1663 0, /* bitpos */
86c95733 1664 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1665 ppc_elf_unhandled_reloc, /* special_function */
e054468f
AM
1666 "R_PPC_IRELATIVE", /* name */
1667 FALSE, /* partial_inplace */
1668 0, /* src_mask */
1669 0xffffffff, /* dst_mask */
1670 FALSE), /* pcrel_offset */
1671
d7128ce4
AM
1672 /* A 16 bit relative relocation. */
1673 HOWTO (R_PPC_REL16, /* type */
1674 0, /* rightshift */
1675 1, /* size (0 = byte, 1 = short, 2 = long) */
1676 16, /* bitsize */
1677 TRUE, /* pc_relative */
1678 0, /* bitpos */
86c95733 1679 complain_overflow_signed, /* complain_on_overflow */
d7128ce4
AM
1680 bfd_elf_generic_reloc, /* special_function */
1681 "R_PPC_REL16", /* name */
1682 FALSE, /* partial_inplace */
1683 0, /* src_mask */
1684 0xffff, /* dst_mask */
1685 TRUE), /* pcrel_offset */
1686
1687 /* A 16 bit relative relocation without overflow. */
1688 HOWTO (R_PPC_REL16_LO, /* type */
1689 0, /* rightshift */
1690 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 16, /* bitsize */
1692 TRUE, /* pc_relative */
1693 0, /* bitpos */
1694 complain_overflow_dont,/* complain_on_overflow */
1695 bfd_elf_generic_reloc, /* special_function */
1696 "R_PPC_REL16_LO", /* name */
1697 FALSE, /* partial_inplace */
1698 0, /* src_mask */
1699 0xffff, /* dst_mask */
1700 TRUE), /* pcrel_offset */
1701
1702 /* The high order 16 bits of a relative address. */
1703 HOWTO (R_PPC_REL16_HI, /* type */
1704 16, /* rightshift */
1705 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 16, /* bitsize */
1707 TRUE, /* pc_relative */
1708 0, /* bitpos */
1709 complain_overflow_dont, /* complain_on_overflow */
1710 bfd_elf_generic_reloc, /* special_function */
1711 "R_PPC_REL16_HI", /* name */
1712 FALSE, /* partial_inplace */
1713 0, /* src_mask */
1714 0xffff, /* dst_mask */
1715 TRUE), /* pcrel_offset */
1716
1717 /* The high order 16 bits of a relative address, plus 1 if the contents of
1718 the low 16 bits, treated as a signed number, is negative. */
1719 HOWTO (R_PPC_REL16_HA, /* type */
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1722 16, /* bitsize */
1723 TRUE, /* pc_relative */
1724 0, /* bitpos */
1725 complain_overflow_dont, /* complain_on_overflow */
1726 ppc_elf_addr16_ha_reloc, /* special_function */
1727 "R_PPC_REL16_HA", /* name */
1728 FALSE, /* partial_inplace */
1729 0, /* src_mask */
1730 0xffff, /* dst_mask */
1731 TRUE), /* pcrel_offset */
1732
a680de9a
PB
1733 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1734 HOWTO (R_PPC_REL16DX_HA, /* type */
1735 16, /* rightshift */
1736 2, /* size (0 = byte, 1 = short, 2 = long) */
1737 16, /* bitsize */
1738 TRUE, /* pc_relative */
1739 0, /* bitpos */
1740 complain_overflow_signed, /* complain_on_overflow */
1741 ppc_elf_addr16_ha_reloc, /* special_function */
1742 "R_PPC_REL16DX_HA", /* name */
1743 FALSE, /* partial_inplace */
1744 0, /* src_mask */
1745 0x1fffc1, /* dst_mask */
1746 TRUE), /* pcrel_offset */
1747
25dbc73a
AM
1748 /* GNU extension to record C++ vtable hierarchy. */
1749 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1750 0, /* rightshift */
1751 0, /* size (0 = byte, 1 = short, 2 = long) */
1752 0, /* bitsize */
1753 FALSE, /* pc_relative */
1754 0, /* bitpos */
1755 complain_overflow_dont, /* complain_on_overflow */
1756 NULL, /* special_function */
1757 "R_PPC_GNU_VTINHERIT", /* name */
1758 FALSE, /* partial_inplace */
1759 0, /* src_mask */
1760 0, /* dst_mask */
1761 FALSE), /* pcrel_offset */
1762
1763 /* GNU extension to record C++ vtable member usage. */
1764 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1765 0, /* rightshift */
1766 0, /* size (0 = byte, 1 = short, 2 = long) */
1767 0, /* bitsize */
1768 FALSE, /* pc_relative */
1769 0, /* bitpos */
1770 complain_overflow_dont, /* complain_on_overflow */
1771 NULL, /* special_function */
1772 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM
1773 FALSE, /* partial_inplace */
1774 0, /* src_mask */
25dbc73a 1775 0, /* dst_mask */
7619e7c7
AM
1776 FALSE), /* pcrel_offset */
1777
25dbc73a
AM
1778 /* Phony reloc to handle AIX style TOC entries. */
1779 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM
1780 0, /* rightshift */
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1782 16, /* bitsize */
1783 FALSE, /* pc_relative */
1784 0, /* bitpos */
25dbc73a 1785 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1786 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a 1787 "R_PPC_TOC16", /* name */
7619e7c7
AM
1788 FALSE, /* partial_inplace */
1789 0, /* src_mask */
1790 0xffff, /* dst_mask */
1791 FALSE), /* pcrel_offset */
25dbc73a 1792};
70a38d42
SDJ
1793
1794/* External 32-bit PPC structure for PRPSINFO. This structure is
1795 ABI-defined, thus we choose to use char arrays here in order to
1796 avoid dealing with different types in different architectures.
1797
1798 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1799 most non-PPC architectures use `short int'.
1800
1801 This structure will ultimately be written in the corefile's note
1802 section, as the PRPSINFO. */
1803
1804struct elf_external_ppc_linux_prpsinfo32
1805 {
1806 char pr_state; /* Numeric process state. */
1807 char pr_sname; /* Char for pr_state. */
1808 char pr_zomb; /* Zombie. */
1809 char pr_nice; /* Nice val. */
1810 char pr_flag[4]; /* Flags. */
1811 char pr_uid[4];
1812 char pr_gid[4];
1813 char pr_pid[4];
1814 char pr_ppid[4];
1815 char pr_pgrp[4];
1816 char pr_sid[4];
1817 char pr_fname[16]; /* Filename of executable. */
1818 char pr_psargs[80]; /* Initial part of arg list. */
1819 };
1820
aeb70569
AM
1821/* Helper function to copy an elf_internal_linux_prpsinfo in host
1822 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
70a38d42 1823
aeb70569
AM
1824static inline void
1825swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1826 const struct elf_internal_linux_prpsinfo *from,
1827 struct elf_external_ppc_linux_prpsinfo32 *to)
1828{
1829 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1830 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1831 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1832 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1833 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1834 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1835 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1836 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1837 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1838 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1839 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1840 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1841 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1842}
25dbc73a
AM
1843\f
1844/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1845
1846static void
1847ppc_elf_howto_init (void)
1848{
1849 unsigned int i, type;
1850
1851 for (i = 0;
1852 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1853 i++)
1854 {
1855 type = ppc_elf_howto_raw[i].type;
1856 if (type >= (sizeof (ppc_elf_howto_table)
1857 / sizeof (ppc_elf_howto_table[0])))
1858 abort ();
1859 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1860 }
1861}
1862
1863static reloc_howto_type *
1864ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1865 bfd_reloc_code_real_type code)
1866{
1867 enum elf_ppc_reloc_type r;
1868
1869 /* Initialize howto table if not already done. */
1870 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1871 ppc_elf_howto_init ();
1872
1873 switch (code)
1874 {
1875 default:
1876 return NULL;
1877
1878 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1879 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1880 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1fe532cf 1881 case BFD_RELOC_PPC64_ADDR16_DS:
25dbc73a 1882 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1fe532cf 1883 case BFD_RELOC_PPC64_ADDR16_LO_DS:
25dbc73a
AM
1884 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1885 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1886 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1887 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1888 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1889 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1890 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1891 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1892 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1893 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1fe532cf 1894 case BFD_RELOC_PPC64_GOT16_DS:
25dbc73a 1895 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1fe532cf 1896 case BFD_RELOC_PPC64_GOT16_LO_DS:
25dbc73a
AM
1897 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1898 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1899 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1900 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1901 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1902 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1903 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1904 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1905 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1906 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1fe532cf 1907 case BFD_RELOC_PPC64_PLT16_LO_DS:
25dbc73a
AM
1908 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1909 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1910 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1911 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1fe532cf 1912 case BFD_RELOC_PPC64_SECTOFF_DS:
25dbc73a 1913 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1fe532cf 1914 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
25dbc73a
AM
1915 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1916 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1917 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1918 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1fe532cf 1919 case BFD_RELOC_PPC64_TOC16_DS:
25dbc73a
AM
1920 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1921 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
727fc41e
AM
1922 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1923 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
25dbc73a 1924 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1fe532cf 1925 case BFD_RELOC_PPC64_TPREL16_DS:
25dbc73a 1926 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1fe532cf 1927 case BFD_RELOC_PPC64_TPREL16_LO_DS:
25dbc73a
AM
1928 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1929 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1930 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1931 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1fe532cf 1932 case BFD_RELOC_PPC64_DTPREL16_DS:
25dbc73a 1933 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1fe532cf 1934 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
25dbc73a
AM
1935 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1936 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1937 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1938 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1939 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1940 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1941 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1942 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1943 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1944 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1945 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1946 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1947 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1948 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1949 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1950 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1951 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1952 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1953 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1954 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1955 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1956 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1957 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1958 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1959 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1960 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1961 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1962 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1963 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1964 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1965 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1966 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1967 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1968 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1969 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1970 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
b9c361e0
JL
1971 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1972 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1973 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1974 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1975 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1976 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1977 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1978 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1979 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1980 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1981 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1982 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1983 r = R_PPC_VLE_SDAREL_LO16A;
1984 break;
1985 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1986 r = R_PPC_VLE_SDAREL_LO16D;
1987 break;
1988 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1989 r = R_PPC_VLE_SDAREL_HI16A;
1990 break;
1991 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1992 r = R_PPC_VLE_SDAREL_HI16D;
1993 break;
1994 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1995 r = R_PPC_VLE_SDAREL_HA16A;
1996 break;
1997 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1998 r = R_PPC_VLE_SDAREL_HA16D;
1999 break;
d7128ce4
AM
2000 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2001 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2002 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2003 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
a680de9a 2004 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
25dbc73a
AM
2005 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2006 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2007 }
2008
2009 return ppc_elf_howto_table[r];
2010};
2011
157090f7
AM
2012static reloc_howto_type *
2013ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2014 const char *r_name)
2015{
2016 unsigned int i;
2017
2018 for (i = 0;
2019 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2020 i++)
2021 if (ppc_elf_howto_raw[i].name != NULL
2022 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2023 return &ppc_elf_howto_raw[i];
2024
2025 return NULL;
2026}
2027
25dbc73a
AM
2028/* Set the howto pointer for a PowerPC ELF reloc. */
2029
2030static void
2031ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2032 arelent *cache_ptr,
2033 Elf_Internal_Rela *dst)
2034{
cd21f5da
NC
2035 unsigned int r_type;
2036
25dbc73a
AM
2037 /* Initialize howto table if not already done. */
2038 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2039 ppc_elf_howto_init ();
2040
cd21f5da
NC
2041 r_type = ELF32_R_TYPE (dst->r_info);
2042 if (r_type >= R_PPC_max)
2043 {
4eca0228
AM
2044 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2045 abfd, r_type);
cd21f5da
NC
2046 bfd_set_error (bfd_error_bad_value);
2047 r_type = R_PPC_NONE;
2048 }
2049 cache_ptr->howto = ppc_elf_howto_table[r_type];
375de94a
AM
2050
2051 /* Just because the above assert didn't trigger doesn't mean that
2052 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2053 if (!cache_ptr->howto)
2054 {
4eca0228
AM
2055 _bfd_error_handler (_("%B: invalid relocation type %d"),
2056 abfd, r_type);
375de94a
AM
2057 bfd_set_error (bfd_error_bad_value);
2058
2059 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2060 }
25dbc73a
AM
2061}
2062
d7128ce4 2063/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM
2064
2065static bfd_reloc_status_type
2066ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2067 arelent *reloc_entry,
2068 asymbol *symbol,
2069 void *data ATTRIBUTE_UNUSED,
2070 asection *input_section,
2071 bfd *output_bfd,
2072 char **error_message ATTRIBUTE_UNUSED)
2073{
a680de9a
PB
2074 enum elf_ppc_reloc_type r_type;
2075 long insn;
2076 bfd_size_type octets;
2077 bfd_vma value;
25dbc73a
AM
2078
2079 if (output_bfd != NULL)
2080 {
2081 reloc_entry->address += input_section->output_offset;
2082 return bfd_reloc_ok;
2083 }
2084
a680de9a
PB
2085 reloc_entry->addend += 0x8000;
2086 r_type = reloc_entry->howto->type;
2087 if (r_type != R_PPC_REL16DX_HA)
2088 return bfd_reloc_continue;
2089
2090 value = 0;
2091 if (!bfd_is_com_section (symbol->section))
2092 value = symbol->value;
2093 value += (reloc_entry->addend
2094 + symbol->section->output_offset
2095 + symbol->section->output_section->vma);
2096 value -= (reloc_entry->address
2097 + input_section->output_offset
2098 + input_section->output_section->vma);
2099 value >>= 16;
2100
2101 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2102 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2103 insn &= ~0x1fffc1;
2104 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2105 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2106 return bfd_reloc_ok;
25dbc73a
AM
2107}
2108
2109static bfd_reloc_status_type
2110ppc_elf_unhandled_reloc (bfd *abfd,
2111 arelent *reloc_entry,
2112 asymbol *symbol,
2113 void *data,
2114 asection *input_section,
2115 bfd *output_bfd,
2116 char **error_message)
2117{
2118 /* If this is a relocatable link (output_bfd test tells us), just
2119 call the generic function. Any adjustment will be done at final
2120 link time. */
2121 if (output_bfd != NULL)
2122 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2123 input_section, output_bfd, error_message);
2124
2125 if (error_message != NULL)
2126 {
2127 static char buf[60];
2128 sprintf (buf, _("generic linker can't handle %s"),
2129 reloc_entry->howto->name);
2130 *error_message = buf;
2131 }
2132 return bfd_reloc_dangerous;
2133}
2134\f
2135/* Sections created by the linker. */
2136
2137typedef struct elf_linker_section
2138{
c9a2f333 2139 /* Pointer to the bfd section. */
25dbc73a 2140 asection *section;
c9a2f333
AM
2141 /* Section name. */
2142 const char *name;
2143 /* Associated bss section name. */
2144 const char *bss_name;
2145 /* Associated symbol name. */
2146 const char *sym_name;
046183de
AM
2147 /* Associated symbol. */
2148 struct elf_link_hash_entry *sym;
25dbc73a
AM
2149} elf_linker_section_t;
2150
2151/* Linked list of allocated pointer entries. This hangs off of the
2152 symbol lists, and provides allows us to return different pointers,
2153 based on different addend's. */
2154
2155typedef struct elf_linker_section_pointers
2156{
2157 /* next allocated pointer for this symbol */
2158 struct elf_linker_section_pointers *next;
2159 /* offset of pointer from beginning of section */
2160 bfd_vma offset;
2161 /* addend used */
2162 bfd_vma addend;
2163 /* which linker section this is */
2164 elf_linker_section_t *lsect;
25dbc73a
AM
2165} elf_linker_section_pointers_t;
2166
2167struct ppc_elf_obj_tdata
2168{
2169 struct elf_obj_tdata elf;
2170
2171 /* A mapping from local symbols to offsets into the various linker
2172 sections added. This is index by the symbol index. */
2173 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM
2174
2175 /* Flags used to auto-detect plt type. */
2176 unsigned int makes_plt_call : 1;
2177 unsigned int has_rel16 : 1;
25dbc73a
AM
2178};
2179
2180#define ppc_elf_tdata(bfd) \
2181 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 2182
25dbc73a
AM
2183#define elf_local_ptr_offsets(bfd) \
2184 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 2185
0c8d6e5c
AM
2186#define is_ppc_elf(bfd) \
2187 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2188 && elf_object_id (bfd) == PPC32_ELF_DATA)
0c8d6e5c 2189
25dbc73a 2190/* Override the generic function because we store some extras. */
7619e7c7 2191
25dbc73a
AM
2192static bfd_boolean
2193ppc_elf_mkobject (bfd *abfd)
2194{
0ffa91dd 2195 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
4dfe6ac6 2196 PPC32_ELF_DATA);
25dbc73a 2197}
7619e7c7 2198
14b57c7c
AM
2199/* When defaulting arch/mach, decode apuinfo to find a better match. */
2200
2201bfd_boolean
2202_bfd_elf_ppc_set_arch (bfd *abfd)
2203{
2204 unsigned long mach = 0;
2205 asection *s;
2206 unsigned char *contents;
2207
2208 if (abfd->arch_info->bits_per_word == 32
2209 && bfd_big_endian (abfd))
2210 {
2211
2212 for (s = abfd->sections; s != NULL; s = s->next)
2213 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2214 break;
2215 if (s != NULL)
2216 mach = bfd_mach_ppc_vle;
2217 }
2218
2219 if (mach == 0)
2220 {
2221 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2222 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2223 {
2224 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2225 unsigned int i;
2226
2227 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2228 {
2229 unsigned int val = bfd_get_32 (abfd, contents + i);
2230 switch (val >> 16)
2231 {
2232 case PPC_APUINFO_PMR:
2233 case PPC_APUINFO_RFMCI:
2234 if (mach == 0)
2235 mach = bfd_mach_ppc_titan;
2236 break;
2237
2238 case PPC_APUINFO_ISEL:
2239 case PPC_APUINFO_CACHELCK:
2240 if (mach == bfd_mach_ppc_titan)
2241 mach = bfd_mach_ppc_e500mc;
2242 break;
2243
2244 case PPC_APUINFO_SPE:
2245 case PPC_APUINFO_EFS:
2246 case PPC_APUINFO_BRLOCK:
2247 if (mach != bfd_mach_ppc_vle)
2248 mach = bfd_mach_ppc_e500;
8941017b 2249 break;
14b57c7c
AM
2250
2251 case PPC_APUINFO_VLE:
2252 mach = bfd_mach_ppc_vle;
2253 break;
2254
2255 default:
2256 mach = -1ul;
2257 }
2258 }
2259 free (contents);
2260 }
2261 }
2262
2263 if (mach != 0 && mach != -1ul)
2264 {
2265 const bfd_arch_info_type *arch;
2266
2267 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2268 if (arch->mach == mach)
2269 {
2270 abfd->arch_info = arch;
2271 break;
2272 }
2273 }
2274 return TRUE;
2275}
2276
25dbc73a 2277/* Fix bad default arch selected for a 32 bit input bfd when the
14b57c7c 2278 default is 64 bit. Also select arch based on apuinfo. */
7619e7c7 2279
25dbc73a
AM
2280static bfd_boolean
2281ppc_elf_object_p (bfd *abfd)
2282{
14b57c7c
AM
2283 if (!abfd->arch_info->the_default)
2284 return TRUE;
2285
2286 if (abfd->arch_info->bits_per_word == 64)
25dbc73a
AM
2287 {
2288 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 2289
25dbc73a
AM
2290 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2291 {
2292 /* Relies on arch after 64 bit default being 32 bit default. */
2293 abfd->arch_info = abfd->arch_info->next;
2294 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2295 }
2296 }
14b57c7c 2297 return _bfd_elf_ppc_set_arch (abfd);
25dbc73a 2298}
7619e7c7 2299
25dbc73a 2300/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 2301
25dbc73a
AM
2302static bfd_boolean
2303ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2304{
2305 BFD_ASSERT (!elf_flags_init (abfd)
2306 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 2307
25dbc73a
AM
2308 elf_elfheader (abfd)->e_flags = flags;
2309 elf_flags_init (abfd) = TRUE;
2310 return TRUE;
2311}
2312
25dbc73a 2313/* Support for core dump NOTE sections. */
deaaf2f3 2314
b34976b6 2315static bfd_boolean
25dbc73a 2316ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 2317{
25dbc73a
AM
2318 int offset;
2319 unsigned int size;
252b5132 2320
25dbc73a
AM
2321 switch (note->descsz)
2322 {
2323 default:
2324 return FALSE;
252b5132 2325
25dbc73a
AM
2326 case 268: /* Linux/PPC. */
2327 /* pr_cursig */
228e534f 2328 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 2329
25dbc73a 2330 /* pr_pid */
228e534f 2331 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 2332
25dbc73a
AM
2333 /* pr_reg */
2334 offset = 72;
2335 size = 192;
deaaf2f3 2336
25dbc73a
AM
2337 break;
2338 }
deaaf2f3 2339
25dbc73a
AM
2340 /* Make a ".reg/999" section. */
2341 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2342 size, note->descpos + offset);
2343}
252b5132 2344
25dbc73a
AM
2345static bfd_boolean
2346ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2347{
2348 switch (note->descsz)
deaaf2f3 2349 {
25dbc73a
AM
2350 default:
2351 return FALSE;
deaaf2f3 2352
25dbc73a 2353 case 128: /* Linux/PPC elf_prpsinfo. */
228e534f 2354 elf_tdata (abfd)->core->pid
bc989cdc 2355 = bfd_get_32 (abfd, note->descdata + 16);
228e534f 2356 elf_tdata (abfd)->core->program
25dbc73a 2357 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
228e534f 2358 elf_tdata (abfd)->core->command
25dbc73a
AM
2359 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2360 }
9abc968f 2361
25dbc73a
AM
2362 /* Note that for some reason, a spurious space is tacked
2363 onto the end of the args in some (at least one anyway)
2364 implementations, so strip it off if it exists. */
70bccea4 2365
25dbc73a 2366 {
228e534f 2367 char *command = elf_tdata (abfd)->core->command;
25dbc73a 2368 int n = strlen (command);
70bccea4 2369
25dbc73a
AM
2370 if (0 < n && command[n - 1] == ' ')
2371 command[n - 1] = '\0';
2372 }
deaaf2f3 2373
25dbc73a
AM
2374 return TRUE;
2375}
deaaf2f3 2376
70a38d42 2377char *
aeb70569
AM
2378elfcore_write_ppc_linux_prpsinfo32
2379 (bfd *abfd,
2380 char *buf,
2381 int *bufsiz,
2382 const struct elf_internal_linux_prpsinfo *prpsinfo)
70a38d42
SDJ
2383{
2384 struct elf_external_ppc_linux_prpsinfo32 data;
2385
aeb70569 2386 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
70a38d42
SDJ
2387 return elfcore_write_note (abfd, buf, bufsiz,
2388 "CORE", NT_PRPSINFO, &data, sizeof (data));
2389}
2390
183e98be
AM
2391static char *
2392ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2393{
2394 switch (note_type)
2395 {
2396 default:
2397 return NULL;
2398
2399 case NT_PRPSINFO:
2400 {
2401 char data[128];
2402 va_list ap;
2403
2404 va_start (ap, note_type);
75cd47ed 2405 memset (data, 0, sizeof (data));
183e98be
AM
2406 strncpy (data + 32, va_arg (ap, const char *), 16);
2407 strncpy (data + 48, va_arg (ap, const char *), 80);
2408 va_end (ap);
2409 return elfcore_write_note (abfd, buf, bufsiz,
2410 "CORE", note_type, data, sizeof (data));
2411 }
2412
2413 case NT_PRSTATUS:
2414 {
2415 char data[268];
2416 va_list ap;
2417 long pid;
2418 int cursig;
2419 const void *greg;
2420
2421 va_start (ap, note_type);
2422 memset (data, 0, 72);
2423 pid = va_arg (ap, long);
2424 bfd_put_32 (abfd, pid, data + 24);
2425 cursig = va_arg (ap, int);
2426 bfd_put_16 (abfd, cursig, data + 12);
2427 greg = va_arg (ap, const void *);
2428 memcpy (data + 72, greg, 192);
2429 memset (data + 264, 0, 4);
2430 va_end (ap);
2431 return elfcore_write_note (abfd, buf, bufsiz,
2432 "CORE", note_type, data, sizeof (data));
2433 }
2434 }
2435}
2436
b9c361e0 2437static flagword
68ffbac6 2438ppc_elf_lookup_section_flags (char *flag_name)
b9c361e0
JL
2439{
2440
2441 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2442 return SHF_PPC_VLE;
2443
2444 return 0;
2445}
2446
25dbc73a
AM
2447/* Return address for Ith PLT stub in section PLT, for relocation REL
2448 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 2449
25dbc73a
AM
2450static bfd_vma
2451ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2452 const asection *plt ATTRIBUTE_UNUSED,
2453 const arelent *rel)
2454{
2455 return rel->address;
2456}
deaaf2f3 2457
25dbc73a 2458/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
2459 is called when bfd_section_from_shdr finds a section with an unknown
2460 type. */
deaaf2f3 2461
25dbc73a 2462static bfd_boolean
6dc132d9
L
2463ppc_elf_section_from_shdr (bfd *abfd,
2464 Elf_Internal_Shdr *hdr,
2465 const char *name,
2466 int shindex)
25dbc73a
AM
2467{
2468 asection *newsect;
2469 flagword flags;
d1c6de6f 2470
6dc132d9 2471 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 2472 return FALSE;
deaaf2f3 2473
25dbc73a
AM
2474 newsect = hdr->bfd_section;
2475 flags = bfd_get_section_flags (abfd, newsect);
2476 if (hdr->sh_flags & SHF_EXCLUDE)
2477 flags |= SEC_EXCLUDE;
9abc968f 2478
25dbc73a
AM
2479 if (hdr->sh_type == SHT_ORDERED)
2480 flags |= SEC_SORT_ENTRIES;
d1c6de6f 2481
25dbc73a
AM
2482 bfd_set_section_flags (abfd, newsect, flags);
2483 return TRUE;
2484}
2485
2486/* Set up any other section flags and such that may be necessary. */
2487
2488static bfd_boolean
2489ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2490 Elf_Internal_Shdr *shdr,
2491 asection *asect)
2492{
25dbc73a
AM
2493 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2494 shdr->sh_type = SHT_ORDERED;
2495
2496 return TRUE;
2497}
2498
2499/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2500 need to bump up the number of section headers. */
2501
2502static int
a6b96beb
AM
2503ppc_elf_additional_program_headers (bfd *abfd,
2504 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM
2505{
2506 asection *s;
2507 int ret = 0;
d1c6de6f 2508
25dbc73a
AM
2509 s = bfd_get_section_by_name (abfd, ".sbss2");
2510 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2511 ++ret;
d1c6de6f 2512
25dbc73a
AM
2513 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2514 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2515 ++ret;
deaaf2f3 2516
25dbc73a
AM
2517 return ret;
2518}
deaaf2f3 2519
68ffbac6 2520/* Modify the segment map for VLE executables. */
b9c361e0
JL
2521
2522bfd_boolean
2523ppc_elf_modify_segment_map (bfd *abfd,
2524 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2525{
f7d69005 2526 struct elf_segment_map *m;
b9c361e0
JL
2527
2528 /* At this point in the link, output sections have already been sorted by
2529 LMA and assigned to segments. All that is left to do is to ensure
2530 there is no mixing of VLE & non-VLE sections in a text segment.
2531 If we find that case, we split the segment.
2532 We maintain the original output section order. */
2533
12bd6957 2534 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
b9c361e0 2535 {
f7d69005
AM
2536 struct elf_segment_map *n;
2537 bfd_size_type amt;
2538 unsigned int j, k;
2539 unsigned int p_flags;
2540
2541 if (m->p_type != PT_LOAD || m->count == 0)
b9c361e0
JL
2542 continue;
2543
f7d69005 2544 for (p_flags = PF_R, j = 0; j != m->count; ++j)
b9c361e0 2545 {
f7d69005
AM
2546 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2547 p_flags |= PF_W;
2548 if ((m->sections[j]->flags & SEC_CODE) != 0)
2549 {
2550 p_flags |= PF_X;
2551 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2552 p_flags |= PF_PPC_VLE;
2553 break;
2554 }
2555 }
2556 if (j != m->count)
2557 while (++j != m->count)
2558 {
2559 unsigned int p_flags1 = PF_R;
94caa966 2560
f7d69005
AM
2561 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2562 p_flags1 |= PF_W;
2563 if ((m->sections[j]->flags & SEC_CODE) != 0)
2564 {
2565 p_flags1 |= PF_X;
2566 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2567 p_flags1 |= PF_PPC_VLE;
2568 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2569 break;
2570 }
2571 p_flags |= p_flags1;
2572 }
2573 /* If we're splitting a segment which originally contained rw
2574 sections then those sections might now only be in one of the
2575 two parts. So always set p_flags if splitting, even if we
2576 are being called for objcopy with p_flags_valid set. */
2577 if (j != m->count || !m->p_flags_valid)
2578 {
2579 m->p_flags_valid = 1;
2580 m->p_flags = p_flags;
2581 }
2582 if (j == m->count)
b9c361e0
JL
2583 continue;
2584
f7d69005 2585 /* Sections 0..j-1 stay in this (current) segment,
b9c361e0
JL
2586 the remainder are put in a new segment.
2587 The scan resumes with the new segment. */
2588
b9c361e0
JL
2589 amt = sizeof (struct elf_segment_map);
2590 amt += (m->count - j - 1) * sizeof (asection *);
2591 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2592 if (n == NULL)
2593 return FALSE;
2594
2595 n->p_type = PT_LOAD;
b9c361e0
JL
2596 n->count = m->count - j;
2597 for (k = 0; k < n->count; ++k)
f7d69005
AM
2598 n->sections[k] = m->sections[j + k];
2599 m->count = j;
2600 m->p_size_valid = 0;
b9c361e0
JL
2601 n->next = m->next;
2602 m->next = n;
b9c361e0
JL
2603 }
2604
2605 return TRUE;
2606}
2607
25dbc73a
AM
2608/* Add extra PPC sections -- Note, for now, make .sbss2 and
2609 .PPC.EMB.sbss0 a normal section, and not a bss section so
2610 that the linker doesn't crater when trying to make more than
2611 2 sections. */
e656e369 2612
b35d266b 2613static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 2614{
14b57c7c
AM
2615 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2616 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2617 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2618 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2619 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2620 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2621 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2622 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2623 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2624 { NULL, 0, 0, 0, 0 }
7f4d3958
L
2625};
2626
551b43fd
AM
2627/* This is what we want for new plt/got. */
2628static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 2629 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM
2630
2631static const struct bfd_elf_special_section *
2632ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 2633{
b35d266b 2634 const struct bfd_elf_special_section *ssect;
551b43fd
AM
2635
2636 /* See if this is one of the special sections. */
2637 if (sec->name == NULL)
2638 return NULL;
2639
2640 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2641 sec->use_rela_p);
2642 if (ssect != NULL)
2643 {
2644 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2645 ssect = &ppc_alt_plt;
2646 return ssect;
2647 }
2648
2649 return _bfd_elf_get_sec_type_attr (abfd, sec);
2650}
25dbc73a
AM
2651\f
2652/* Very simple linked list structure for recording apuinfo values. */
2653typedef struct apuinfo_list
2654{
2655 struct apuinfo_list *next;
2656 unsigned long value;
2657}
2658apuinfo_list;
e656e369 2659
25dbc73a 2660static apuinfo_list *head;
f2faa800 2661static bfd_boolean apuinfo_set;
deaaf2f3 2662
25dbc73a
AM
2663static void
2664apuinfo_list_init (void)
2665{
2666 head = NULL;
f2faa800 2667 apuinfo_set = FALSE;
25dbc73a 2668}
9abc968f 2669
25dbc73a
AM
2670static void
2671apuinfo_list_add (unsigned long value)
2672{
2673 apuinfo_list *entry = head;
deaaf2f3 2674
25dbc73a
AM
2675 while (entry != NULL)
2676 {
2677 if (entry->value == value)
2678 return;
2679 entry = entry->next;
2680 }
b4a38de6 2681
25dbc73a
AM
2682 entry = bfd_malloc (sizeof (* entry));
2683 if (entry == NULL)
2684 return;
e656e369 2685
25dbc73a
AM
2686 entry->value = value;
2687 entry->next = head;
2688 head = entry;
2689}
9abc968f 2690
25dbc73a
AM
2691static unsigned
2692apuinfo_list_length (void)
2693{
2694 apuinfo_list *entry;
2695 unsigned long count;
9abc968f 2696
25dbc73a
AM
2697 for (entry = head, count = 0;
2698 entry;
2699 entry = entry->next)
2700 ++ count;
e656e369 2701
25dbc73a
AM
2702 return count;
2703}
eea6121a 2704
25dbc73a
AM
2705static inline unsigned long
2706apuinfo_list_element (unsigned long number)
2707{
2708 apuinfo_list * entry;
e656e369 2709
25dbc73a
AM
2710 for (entry = head;
2711 entry && number --;
2712 entry = entry->next)
2713 ;
252b5132 2714
25dbc73a
AM
2715 return entry ? entry->value : 0;
2716}
2717
2718static void
2719apuinfo_list_finish (void)
2720{
2721 apuinfo_list *entry;
2722
2723 for (entry = head; entry;)
252b5132 2724 {
25dbc73a
AM
2725 apuinfo_list *next = entry->next;
2726 free (entry);
2727 entry = next;
2728 }
9abc968f 2729
25dbc73a
AM
2730 head = NULL;
2731}
9abc968f 2732
25dbc73a
AM
2733/* Scan the input BFDs and create a linked list of
2734 the APUinfo values that will need to be emitted. */
9abc968f 2735
25dbc73a
AM
2736static void
2737ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2738{
2739 bfd *ibfd;
2740 asection *asec;
deddc40b
NS
2741 char *buffer = NULL;
2742 bfd_size_type largest_input_size = 0;
25dbc73a 2743 unsigned i;
25dbc73a
AM
2744 unsigned long length;
2745 const char *error_message = NULL;
9abc968f 2746
25dbc73a
AM
2747 if (link_info == NULL)
2748 return;
9abc968f 2749
25dbc73a 2750 apuinfo_list_init ();
252b5132 2751
25dbc73a 2752 /* Read in the input sections contents. */
c72f2fb2 2753 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
252b5132 2754 {
25dbc73a 2755 unsigned long datum;
252b5132 2756
25dbc73a
AM
2757 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2758 if (asec == NULL)
2759 continue;
252b5132 2760
deddc40b 2761 error_message = _("corrupt %s section in %B");
25dbc73a 2762 length = asec->size;
deddc40b
NS
2763 if (length < 20)
2764 goto fail;
2765
f2faa800 2766 apuinfo_set = TRUE;
deddc40b 2767 if (largest_input_size < asec->size)
25dbc73a 2768 {
deddc40b
NS
2769 if (buffer)
2770 free (buffer);
2771 largest_input_size = asec->size;
2772 buffer = bfd_malloc (largest_input_size);
2773 if (!buffer)
2774 return;
25dbc73a 2775 }
5b914448 2776
25dbc73a 2777 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
deddc40b 2778 || (bfd_bread (buffer, length, ibfd) != length))
25dbc73a
AM
2779 {
2780 error_message = _("unable to read in %s section from %B");
2781 goto fail;
2782 }
252b5132 2783
25dbc73a
AM
2784 /* Verify the contents of the header. Note - we have to
2785 extract the values this way in order to allow for a
2786 host whose endian-ness is different from the target. */
deddc40b 2787 datum = bfd_get_32 (ibfd, buffer);
25dbc73a
AM
2788 if (datum != sizeof APUINFO_LABEL)
2789 goto fail;
252b5132 2790
deddc40b 2791 datum = bfd_get_32 (ibfd, buffer + 8);
25dbc73a
AM
2792 if (datum != 0x2)
2793 goto fail;
252b5132 2794
deddc40b 2795 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
25dbc73a 2796 goto fail;
252b5132 2797
25dbc73a 2798 /* Get the number of bytes used for apuinfo entries. */
deddc40b 2799 datum = bfd_get_32 (ibfd, buffer + 4);
25dbc73a
AM
2800 if (datum + 20 != length)
2801 goto fail;
2802
25dbc73a
AM
2803 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2804 for (i = 0; i < datum; i += 4)
deddc40b 2805 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
252b5132
RH
2806 }
2807
25dbc73a 2808 error_message = NULL;
252b5132 2809
f2faa800 2810 if (apuinfo_set)
deddc40b 2811 {
f2faa800
NS
2812 /* Compute the size of the output section. */
2813 unsigned num_entries = apuinfo_list_length ();
5b914448 2814
deddc40b
NS
2815 /* Set the output section size, if it exists. */
2816 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
f2faa800 2817
deddc40b
NS
2818 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2819 {
2820 ibfd = abfd;
2821 error_message = _("warning: unable to set size of %s section in %B");
2822 }
2823 }
25dbc73a
AM
2824
2825 fail:
deddc40b
NS
2826 if (buffer)
2827 free (buffer);
25dbc73a
AM
2828
2829 if (error_message)
4eca0228 2830 _bfd_error_handler (error_message, ibfd, APUINFO_SECTION_NAME);
25dbc73a 2831}
252b5132 2832
25dbc73a
AM
2833/* Prevent the output section from accumulating the input sections'
2834 contents. We have already stored this in our linked list structure. */
252b5132 2835
25dbc73a
AM
2836static bfd_boolean
2837ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2838 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM
2839 asection *asec,
2840 bfd_byte *contents ATTRIBUTE_UNUSED)
2841{
f2faa800 2842 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
252b5132
RH
2843}
2844
25dbc73a
AM
2845/* Finally we can generate the output section. */
2846
2847static void
2848ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2849{
25dbc73a
AM
2850 bfd_byte *buffer;
2851 asection *asec;
2852 unsigned i;
2853 unsigned num_entries;
2854 bfd_size_type length;
7619e7c7 2855
25dbc73a
AM
2856 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2857 if (asec == NULL)
2858 return;
2859
f2faa800 2860 if (!apuinfo_set)
25dbc73a
AM
2861 return;
2862
2863 length = asec->size;
2864 if (length < 20)
2865 return;
2866
2867 buffer = bfd_malloc (length);
2868 if (buffer == NULL)
7619e7c7 2869 {
4eca0228 2870 _bfd_error_handler
25dbc73a
AM
2871 (_("failed to allocate space for new APUinfo section."));
2872 return;
7619e7c7 2873 }
7619e7c7 2874
25dbc73a
AM
2875 /* Create the apuinfo header. */
2876 num_entries = apuinfo_list_length ();
2877 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2878 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2879 bfd_put_32 (abfd, 0x2, buffer + 8);
2880 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2881
25dbc73a
AM
2882 length = 20;
2883 for (i = 0; i < num_entries; i++)
feee612b 2884 {
25dbc73a
AM
2885 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2886 length += 4;
feee612b 2887 }
feee612b 2888
25dbc73a 2889 if (length != asec->size)
4eca0228 2890 _bfd_error_handler (_("failed to compute new APUinfo section."));
252b5132 2891
25dbc73a 2892 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
4eca0228 2893 _bfd_error_handler (_("failed to install new APUinfo section."));
252b5132 2894
25dbc73a
AM
2895 free (buffer);
2896
2897 apuinfo_list_finish ();
252b5132 2898}
25dbc73a 2899\f
7382d32a 2900static bfd_boolean
c6dd29ce 2901is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
7382d32a 2902{
c6dd29ce 2903 bfd_byte buf[GLINK_ENTRY_SIZE];
7382d32a 2904
c6dd29ce 2905 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
7382d32a
AM
2906 return FALSE;
2907
c6dd29ce
AM
2908 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2909 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2910 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2911 && bfd_get_32 (abfd, buf + 12) == BCTR);
7382d32a
AM
2912}
2913
468392fb
AM
2914static bfd_boolean
2915section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2916{
2917 bfd_vma vma = *(bfd_vma *) ptr;
2918 return ((section->flags & SEC_ALLOC) != 0
2919 && section->vma <= vma
2920 && vma < section->vma + section->size);
2921}
2922
2923static long
2924ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2925 long dynsymcount, asymbol **dynsyms,
2926 asymbol **ret)
2927{
2928 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2929 asection *plt, *relplt, *dynamic, *glink;
2930 bfd_vma glink_vma = 0;
2931 bfd_vma resolv_vma = 0;
2932 bfd_vma stub_vma;
2933 asymbol *s;
2934 arelent *p;
2935 long count, i;
2936 size_t size;
2937 char *names;
2938 bfd_byte buf[4];
2939
2940 *ret = NULL;
2941
2942 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2943 return 0;
2944
2945 if (dynsymcount <= 0)
2946 return 0;
2947
2948 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2949 if (relplt == NULL)
2950 return 0;
2951
2952 plt = bfd_get_section_by_name (abfd, ".plt");
2953 if (plt == NULL)
2954 return 0;
2955
2956 /* Call common code to handle old-style executable PLTs. */
2957 if (elf_section_flags (plt) & SHF_EXECINSTR)
2958 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2959 dynsymcount, dynsyms, ret);
2960
2961 /* If this object was prelinked, the prelinker stored the address
2962 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2963 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2964 if (dynamic != NULL)
2965 {
2966 bfd_byte *dynbuf, *extdyn, *extdynend;
2967 size_t extdynsize;
2968 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2969
2970 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2971 return -1;
2972
2973 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2974 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2975
2976 extdyn = dynbuf;
2977 extdynend = extdyn + dynamic->size;
2978 for (; extdyn < extdynend; extdyn += extdynsize)
2979 {
2980 Elf_Internal_Dyn dyn;
2981 (*swap_dyn_in) (abfd, extdyn, &dyn);
2982
2983 if (dyn.d_tag == DT_NULL)
2984 break;
2985
2986 if (dyn.d_tag == DT_PPC_GOT)
2987 {
2988 unsigned int g_o_t = dyn.d_un.d_val;
2989 asection *got = bfd_get_section_by_name (abfd, ".got");
2990 if (got != NULL
2991 && bfd_get_section_contents (abfd, got, buf,
2992 g_o_t - got->vma + 4, 4))
2993 glink_vma = bfd_get_32 (abfd, buf);
2994 break;
2995 }
2996 }
2997 free (dynbuf);
2998 }
2999
3000 /* Otherwise we read the first plt entry. */
3001 if (glink_vma == 0)
3002 {
3003 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3004 glink_vma = bfd_get_32 (abfd, buf);
3005 }
3006
3007 if (glink_vma == 0)
3008 return 0;
3009
3010 /* The .glink section usually does not survive the final
3011 link; search for the section (usually .text) where the
3012 glink stubs now reside. */
3013 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3014 if (glink == NULL)
3015 return 0;
3016
3017 /* Determine glink PLT resolver by reading the relative branch
3018 from the first glink stub. */
3019 if (bfd_get_section_contents (abfd, glink, buf,
3020 glink_vma - glink->vma, 4))
3021 {
3022 unsigned int insn = bfd_get_32 (abfd, buf);
3023
3024 /* The first glink stub may either branch to the resolver ... */
3025 insn ^= B;
3026 if ((insn & ~0x3fffffc) == 0)
3027 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3028
3029 /* ... or fall through a bunch of NOPs. */
3030 else if ((insn ^ B ^ NOP) == 0)
3031 for (i = 4;
3032 bfd_get_section_contents (abfd, glink, buf,
3033 glink_vma - glink->vma + i, 4);
3034 i += 4)
3035 if (bfd_get_32 (abfd, buf) != NOP)
3036 {
3037 resolv_vma = glink_vma + i;
3038 break;
3039 }
3040 }
3041
7382d32a 3042 count = relplt->size / sizeof (Elf32_External_Rela);
7382d32a
AM
3043 /* If the stubs are those for -shared/-pie then we might have
3044 multiple stubs for each plt entry. If that is the case then
3045 there is no way to associate stubs with their plt entries short
3046 of figuring out the GOT pointer value used in the stub. */
c6dd29ce
AM
3047 if (!is_nonpic_glink_stub (abfd, glink,
3048 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
7382d32a
AM
3049 return 0;
3050
468392fb
AM
3051 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3052 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3053 return -1;
3054
468392fb
AM
3055 size = count * sizeof (asymbol);
3056 p = relplt->relocation;
3057 for (i = 0; i < count; i++, p++)
e054468f
AM
3058 {
3059 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3060 if (p->addend != 0)
3061 size += sizeof ("+0x") - 1 + 8;
3062 }
468392fb
AM
3063
3064 size += sizeof (asymbol) + sizeof ("__glink");
3065
3066 if (resolv_vma)
3067 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3068
3069 s = *ret = bfd_malloc (size);
3070 if (s == NULL)
3071 return -1;
3072
1079403c 3073 stub_vma = glink_vma;
468392fb 3074 names = (char *) (s + count + 1 + (resolv_vma != 0));
1079403c
AM
3075 p = relplt->relocation + count - 1;
3076 for (i = 0; i < count; i++)
468392fb
AM
3077 {
3078 size_t len;
3079
3080 *s = **p->sym_ptr_ptr;
3081 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3082 we are defining a symbol, ensure one of them is set. */
3083 if ((s->flags & BSF_LOCAL) == 0)
3084 s->flags |= BSF_GLOBAL;
6ba2a415 3085 s->flags |= BSF_SYNTHETIC;
468392fb 3086 s->section = glink;
1079403c
AM
3087 stub_vma -= 16;
3088 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3089 stub_vma -= 32;
468392fb
AM
3090 s->value = stub_vma - glink->vma;
3091 s->name = names;
3092 s->udata.p = NULL;
3093 len = strlen ((*p->sym_ptr_ptr)->name);
3094 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3095 names += len;
e054468f
AM
3096 if (p->addend != 0)
3097 {
3098 memcpy (names, "+0x", sizeof ("+0x") - 1);
3099 names += sizeof ("+0x") - 1;
3100 bfd_sprintf_vma (abfd, names, p->addend);
3101 names += strlen (names);
3102 }
468392fb
AM
3103 memcpy (names, "@plt", sizeof ("@plt"));
3104 names += sizeof ("@plt");
3105 ++s;
1079403c 3106 --p;
468392fb
AM
3107 }
3108
3109 /* Add a symbol at the start of the glink branch table. */
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 = glink_vma - glink->vma;
3115 s->name = names;
3116 memcpy (names, "__glink", sizeof ("__glink"));
3117 names += sizeof ("__glink");
3118 s++;
3119 count++;
3120
3121 if (resolv_vma)
3122 {
3123 /* Add a symbol for the glink PLT resolver. */
86a4952b 3124 memset (s, 0, sizeof *s);
468392fb 3125 s->the_bfd = abfd;
6ba2a415 3126 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3127 s->section = glink;
3128 s->value = resolv_vma - glink->vma;
3129 s->name = names;
3130 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3131 names += sizeof ("__glink_PLTresolve");
3132 s++;
3133 count++;
3134 }
3135
3136 return count;
3137}
3138\f
25dbc73a
AM
3139/* The following functions are specific to the ELF linker, while
3140 functions above are used generally. They appear in this file more
3141 or less in the order in which they are called. eg.
3142 ppc_elf_check_relocs is called early in the link process,
3143 ppc_elf_finish_dynamic_sections is one of the last functions
3144 called. */
252b5132 3145
a6aa5195 3146/* Track PLT entries needed for a given symbol. We might need more
a877a2b6 3147 than one glink entry per symbol when generating a pic binary. */
a6aa5195
AM
3148struct plt_entry
3149{
3150 struct plt_entry *next;
3151
3152 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3153 This field stores the offset into .got2 used to initialise the
a877a2b6
AM
3154 GOT pointer reg. It will always be at least 32768. (Current
3155 gcc always uses an offset of 32768, but ld -r will pack .got2
3156 sections together resulting in larger offsets). */
a6aa5195
AM
3157 bfd_vma addend;
3158
3159 /* The .got2 section. */
3160 asection *sec;
3161
3162 /* PLT refcount or offset. */
3163 union
3164 {
3165 bfd_signed_vma refcount;
3166 bfd_vma offset;
3167 } plt;
3168
3169 /* .glink stub offset. */
3170 bfd_vma glink_offset;
3171};
3172
1d483afe 3173/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM
3174 selects those that must be copied when linking a shared library,
3175 even when the symbol is local. */
252b5132 3176
1d483afe
AM
3177static int
3178must_be_dyn_reloc (struct bfd_link_info *info,
3179 enum elf_ppc_reloc_type r_type)
3180{
3181 switch (r_type)
3182 {
3183 default:
3184 return 1;
3185
3186 case R_PPC_REL24:
3187 case R_PPC_REL14:
3188 case R_PPC_REL14_BRTAKEN:
3189 case R_PPC_REL14_BRNTAKEN:
3190 case R_PPC_REL32:
3191 return 0;
3192
3193 case R_PPC_TPREL32:
3194 case R_PPC_TPREL16:
3195 case R_PPC_TPREL16_LO:
3196 case R_PPC_TPREL16_HI:
3197 case R_PPC_TPREL16_HA:
0e1862bb 3198 return !bfd_link_executable (info);
1d483afe
AM
3199 }
3200}
252b5132 3201
25dbc73a
AM
3202/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3203 copying dynamic variables from a shared lib into an app's dynbss
3204 section, and instead use a dynamic relocation to point into the
3205 shared lib. */
3206#define ELIMINATE_COPY_RELOCS 1
252b5132 3207
f95f8542
AM
3208/* Used to track dynamic relocations for local symbols. */
3209struct ppc_dyn_relocs
3210{
3211 struct ppc_dyn_relocs *next;
3212
3213 /* The input section of the reloc. */
3214 asection *sec;
3215
3216 /* Total number of relocs copied for the input section. */
3217 unsigned int count : 31;
3218
3219 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3220 unsigned int ifunc : 1;
3221};
3222
25dbc73a 3223/* PPC ELF linker hash entry. */
252b5132 3224
25dbc73a
AM
3225struct ppc_elf_link_hash_entry
3226{
3227 struct elf_link_hash_entry elf;
252b5132 3228
25dbc73a
AM
3229 /* If this symbol is used in the linker created sections, the processor
3230 specific backend uses this field to map the field into the offset
3231 from the beginning of the section. */
3232 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 3233
25dbc73a 3234 /* Track dynamic relocs copied for this symbol. */
6061a67d 3235 struct elf_dyn_relocs *dyn_relocs;
252b5132 3236
25dbc73a
AM
3237 /* Contexts in which symbol is used in the GOT (or TOC).
3238 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3239 corresponding relocs are encountered during check_relocs.
3240 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3241 indicate the corresponding GOT entry type is not needed. */
3242#define TLS_GD 1 /* GD reloc. */
3243#define TLS_LD 2 /* LD reloc. */
3244#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3245#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3246#define TLS_TLS 16 /* Any TLS reloc. */
3247#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
e054468f 3248#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
25dbc73a 3249 char tls_mask;
4dc4a9a5
DJ
3250
3251 /* Nonzero if we have seen a small data relocation referring to this
3252 symbol. */
d3e454b9
AM
3253 unsigned char has_sda_refs : 1;
3254
3255 /* Flag use of given relocations. */
3256 unsigned char has_addr16_ha : 1;
3257 unsigned char has_addr16_lo : 1;
25dbc73a 3258};
252b5132 3259
25dbc73a
AM
3260#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3261
3262/* PPC ELF linker hash table. */
3263
3264struct ppc_elf_link_hash_table
3265{
3266 struct elf_link_hash_table elf;
3267
5446cbdf
AM
3268 /* Various options passed from the linker. */
3269 struct ppc_elf_params *params;
3270
25dbc73a
AM
3271 /* Short-cuts to get to dynamic linker sections. */
3272 asection *got;
3273 asection *relgot;
d7128ce4 3274 asection *glink;
25dbc73a
AM
3275 asection *plt;
3276 asection *relplt;
e054468f
AM
3277 asection *iplt;
3278 asection *reliplt;
25dbc73a
AM
3279 asection *dynbss;
3280 asection *relbss;
3281 asection *dynsbss;
3282 asection *relsbss;
c9a2f333 3283 elf_linker_section_t sdata[2];
25dbc73a 3284 asection *sbss;
6177242a 3285 asection *glink_eh_frame;
25dbc73a 3286
016687f8
AM
3287 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3288 asection *srelplt2;
3289
3290 /* The .got.plt section (VxWorks only)*/
3291 asection *sgotplt;
3292
1d483afe 3293 /* Shortcut to __tls_get_addr. */
25dbc73a 3294 struct elf_link_hash_entry *tls_get_addr;
252b5132 3295
016687f8
AM
3296 /* The bfd that forced an old-style PLT. */
3297 bfd *old_bfd;
5b914448 3298
25dbc73a
AM
3299 /* TLS local dynamic got entry handling. */
3300 union {
3301 bfd_signed_vma refcount;
3302 bfd_vma offset;
3303 } tlsld_got;
252b5132 3304
c6dd29ce 3305 /* Offset of branch table to PltResolve function in glink. */
d7128ce4
AM
3306 bfd_vma glink_pltresolve;
3307
3b36f7e6
AM
3308 /* Size of reserved GOT entries. */
3309 unsigned int got_header_size;
3310 /* Non-zero if allocating the header left a gap. */
3311 unsigned int got_gap;
3312
4a3dc543
RS
3313 /* The type of PLT we have chosen to use. */
3314 enum ppc_elf_plt_type plt_type;
3315
9d8504b1 3316 /* True if the target system is VxWorks. */
016687f8 3317 unsigned int is_vxworks:1;
9d8504b1
PB
3318
3319 /* The size of PLT entries. */
3320 int plt_entry_size;
3321 /* The distance between adjacent PLT slots. */
3322 int plt_slot_size;
3323 /* The size of the first PLT entry. */
3324 int plt_initial_entry_size;
016687f8 3325
87d72d41
AM
3326 /* Small local sym cache. */
3327 struct sym_cache sym_cache;
25dbc73a 3328};
252b5132 3329
94caa966
AM
3330/* Rename some of the generic section flags to better document how they
3331 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3332
3333/* Nonzero if this section has TLS related relocations. */
3334#define has_tls_reloc sec_flg0
3335
3336/* Nonzero if this section has a call to __tls_get_addr. */
3337#define has_tls_get_addr_call sec_flg1
3338
25dbc73a 3339/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 3340
25dbc73a 3341#define ppc_elf_hash_table(p) \
4dfe6ac6
NC
3342 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3343 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
252b5132 3344
25dbc73a 3345/* Create an entry in a PPC ELF linker hash table. */
252b5132 3346
25dbc73a
AM
3347static struct bfd_hash_entry *
3348ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3349 struct bfd_hash_table *table,
3350 const char *string)
252b5132 3351{
25dbc73a
AM
3352 /* Allocate the structure if it has not already been allocated by a
3353 subclass. */
3354 if (entry == NULL)
3355 {
3356 entry = bfd_hash_allocate (table,
3357 sizeof (struct ppc_elf_link_hash_entry));
3358 if (entry == NULL)
3359 return entry;
3360 }
252b5132 3361
25dbc73a
AM
3362 /* Call the allocation method of the superclass. */
3363 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3364 if (entry != NULL)
3365 {
3366 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3367 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3368 ppc_elf_hash_entry (entry)->tls_mask = 0;
5240d94d 3369 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
25dbc73a 3370 }
252b5132 3371
25dbc73a 3372 return entry;
252b5132 3373}
3dab13f6 3374
25dbc73a 3375/* Create a PPC ELF linker hash table. */
3dab13f6 3376
25dbc73a
AM
3377static struct bfd_link_hash_table *
3378ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 3379{
25dbc73a 3380 struct ppc_elf_link_hash_table *ret;
76e7a751
AM
3381 static struct ppc_elf_params default_params
3382 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0 };
3dab13f6 3383
25dbc73a
AM
3384 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3385 if (ret == NULL)
3386 return NULL;
3dab13f6 3387
66eb6687
AM
3388 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3389 ppc_elf_link_hash_newfunc,
4dfe6ac6
NC
3390 sizeof (struct ppc_elf_link_hash_entry),
3391 PPC32_ELF_DATA))
3dab13f6 3392 {
25dbc73a
AM
3393 free (ret);
3394 return NULL;
3395 }
58111eb7 3396
a6aa5195
AM
3397 ret->elf.init_plt_refcount.refcount = 0;
3398 ret->elf.init_plt_refcount.glist = NULL;
3399 ret->elf.init_plt_offset.offset = 0;
3400 ret->elf.init_plt_offset.glist = NULL;
3401
db434ba0
AM
3402 ret->params = &default_params;
3403
c9a2f333
AM
3404 ret->sdata[0].name = ".sdata";
3405 ret->sdata[0].sym_name = "_SDA_BASE_";
3406 ret->sdata[0].bss_name = ".sbss";
3407
3408 ret->sdata[1].name = ".sdata2";
3409 ret->sdata[1].sym_name = "_SDA2_BASE_";
3410 ret->sdata[1].bss_name = ".sbss2";
3411
9d8504b1
PB
3412 ret->plt_entry_size = 12;
3413 ret->plt_slot_size = 8;
3414 ret->plt_initial_entry_size = 72;
9d8504b1 3415
25dbc73a
AM
3416 return &ret->elf.root;
3417}
3dab13f6 3418
5446cbdf
AM
3419/* Hook linker params into hash table. */
3420
3421void
3422ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3423{
3424 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3425
3426 if (htab)
3427 htab->params = params;
76e7a751 3428 params->pagesize_p2 = bfd_log2 (params->pagesize);
5446cbdf
AM
3429}
3430
9d8504b1 3431/* Create .got and the related sections. */
3dab13f6 3432
25dbc73a
AM
3433static bfd_boolean
3434ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3435{
3436 struct ppc_elf_link_hash_table *htab;
3437 asection *s;
3438 flagword flags;
3dab13f6 3439
25dbc73a
AM
3440 if (!_bfd_elf_create_got_section (abfd, info))
3441 return FALSE;
3dab13f6 3442
25dbc73a 3443 htab = ppc_elf_hash_table (info);
3d4d4302 3444 htab->got = s = bfd_get_linker_section (abfd, ".got");
25dbc73a
AM
3445 if (s == NULL)
3446 abort ();
3dab13f6 3447
9d8504b1
PB
3448 if (htab->is_vxworks)
3449 {
3d4d4302 3450 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
9d8504b1
PB
3451 if (!htab->sgotplt)
3452 abort ();
3453 }
3454 else
3455 {
3456 /* The powerpc .got has a blrl instruction in it. Mark it
3457 executable. */
3458 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3459 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3460 if (!bfd_set_section_flags (abfd, s, flags))
3461 return FALSE;
3462 }
3dab13f6 3463
3d4d4302 3464 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
64e77c6d
L
3465 if (!htab->relgot)
3466 abort ();
3dab13f6 3467
25dbc73a
AM
3468 return TRUE;
3469}
3dab13f6 3470
93d1b056
AM
3471/* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3472 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3473 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3474
3475static bfd_boolean
3476ppc_elf_create_linker_section (bfd *abfd,
3477 struct bfd_link_info *info,
3478 flagword flags,
3479 elf_linker_section_t *lsect)
3480{
3481 asection *s;
3482
3483 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3484 | SEC_LINKER_CREATED);
3485
3486 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3487 if (s == NULL)
3488 return FALSE;
3489 lsect->section = s;
3490
3491 /* Define the sym on the first section of this name. */
3492 s = bfd_get_section_by_name (abfd, lsect->name);
3493
3494 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3495 if (lsect->sym == NULL)
3496 return FALSE;
3497 lsect->sym->root.u.def.value = 0x8000;
3498 return TRUE;
3499}
3500
e054468f
AM
3501static bfd_boolean
3502ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3503{
3504 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3505 asection *s;
3506 flagword flags;
3507
3508 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3509 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3510 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3511 htab->glink = s;
3512 if (s == NULL
5446cbdf
AM
3513 || !bfd_set_section_alignment (abfd, s,
3514 htab->params->ppc476_workaround ? 6 : 4))
e054468f
AM
3515 return FALSE;
3516
6177242a
AM
3517 if (!info->no_ld_generated_unwind_info)
3518 {
3519 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3520 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3521 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3522 htab->glink_eh_frame = s;
3523 if (s == NULL
3524 || !bfd_set_section_alignment (abfd, s, 2))
3525 return FALSE;
3526 }
3527
e054468f
AM
3528 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3529 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3530 htab->iplt = s;
3531 if (s == NULL
3532 || !bfd_set_section_alignment (abfd, s, 4))
3533 return FALSE;
3534
3535 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3536 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3537 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
e054468f
AM
3538 htab->reliplt = s;
3539 if (s == NULL
3540 || ! bfd_set_section_alignment (abfd, s, 2))
3541 return FALSE;
93d1b056
AM
3542
3543 if (!ppc_elf_create_linker_section (abfd, info, 0,
3544 &htab->sdata[0]))
3545 return FALSE;
3546
3547 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3548 &htab->sdata[1]))
3549 return FALSE;
3550
e054468f
AM
3551 return TRUE;
3552}
3553
25dbc73a
AM
3554/* We have to create .dynsbss and .rela.sbss here so that they get mapped
3555 to output sections (just like _bfd_elf_create_dynamic_sections has
3556 to create .dynbss and .rela.bss). */
3dab13f6 3557
25dbc73a
AM
3558static bfd_boolean
3559ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3560{
3561 struct ppc_elf_link_hash_table *htab;
3562 asection *s;
3563 flagword flags;
3dab13f6 3564
25dbc73a 3565 htab = ppc_elf_hash_table (info);
3dab13f6 3566
25dbc73a
AM
3567 if (htab->got == NULL
3568 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
3569 return FALSE;
3570
25dbc73a
AM
3571 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3572 return FALSE;
3dab13f6 3573
e054468f
AM
3574 if (htab->glink == NULL
3575 && !ppc_elf_create_glink (abfd, info))
d7128ce4 3576 return FALSE;
3dab13f6 3577
3d4d4302 3578 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
14b2f831
AM
3579 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3580 SEC_ALLOC | SEC_LINKER_CREATED);
3b36f7e6 3581 htab->dynsbss = s;
3496cb2a 3582 if (s == NULL)
25dbc73a 3583 return FALSE;
3dab13f6 3584
0e1862bb 3585 if (! bfd_link_pic (info))
25dbc73a 3586 {
3d4d4302 3587 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
e054468f
AM
3588 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3589 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3590 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 3591 htab->relsbss = s;
25dbc73a 3592 if (s == NULL
25dbc73a
AM
3593 || ! bfd_set_section_alignment (abfd, s, 2))
3594 return FALSE;
3595 }
3dab13f6 3596
711de32c
RS
3597 if (htab->is_vxworks
3598 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3599 return FALSE;
9d8504b1 3600
3d4d4302
AM
3601 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3602 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
25dbc73a
AM
3603 if (s == NULL)
3604 abort ();
3dab13f6 3605
3b36f7e6 3606 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
3607 if (htab->plt_type == PLT_VXWORKS)
3608 /* The VxWorks PLT is a loaded section with contents. */
3609 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
3610 return bfd_set_section_flags (abfd, s, flags);
3611}
3dab13f6 3612
25dbc73a 3613/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 3614
25dbc73a 3615static void
fcfa13d2 3616ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
3617 struct elf_link_hash_entry *dir,
3618 struct elf_link_hash_entry *ind)
3619{
3620 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 3621
25dbc73a
AM
3622 edir = (struct ppc_elf_link_hash_entry *) dir;
3623 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 3624
c79d6685
AM
3625 edir->tls_mask |= eind->tls_mask;
3626 edir->has_sda_refs |= eind->has_sda_refs;
3627
3628 /* If called to transfer flags for a weakdef during processing
3629 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3630 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3631 if (!(ELIMINATE_COPY_RELOCS
3632 && eind->elf.root.type != bfd_link_hash_indirect
3633 && edir->elf.dynamic_adjusted))
3634 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3635
3636 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3637 edir->elf.ref_regular |= eind->elf.ref_regular;
3638 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3639 edir->elf.needs_plt |= eind->elf.needs_plt;
3640 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3641
25dbc73a
AM
3642 if (eind->dyn_relocs != NULL)
3643 {
3644 if (edir->dyn_relocs != NULL)
3dab13f6 3645 {
6061a67d
AM
3646 struct elf_dyn_relocs **pp;
3647 struct elf_dyn_relocs *p;
3dab13f6 3648
fcfa13d2 3649 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
3650 list. Merge any entries against the same section. */
3651 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 3652 {
6061a67d 3653 struct elf_dyn_relocs *q;
25dbc73a
AM
3654
3655 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3656 if (q->sec == p->sec)
3657 {
3658 q->pc_count += p->pc_count;
3659 q->count += p->count;
3660 *pp = p->next;
3661 break;
3662 }
3663 if (q == NULL)
3664 pp = &p->next;
3dab13f6 3665 }
25dbc73a 3666 *pp = edir->dyn_relocs;
3dab13f6 3667 }
25dbc73a
AM
3668
3669 edir->dyn_relocs = eind->dyn_relocs;
3670 eind->dyn_relocs = NULL;
3dab13f6 3671 }
3dab13f6 3672
68ba6d40
AM
3673 /* If we were called to copy over info for a weak sym, that's all.
3674 You might think dyn_relocs need not be copied over; After all,
3675 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 3676 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM
3677 code in ppc_elf_adjust_dynamic_symbol needs to check for
3678 dyn_relocs in read-only sections, and it does so on what is the
3679 DIR sym here. */
3680 if (eind->elf.root.type != bfd_link_hash_indirect)
3681 return;
3682
a6aa5195
AM
3683 /* Copy over the GOT refcount entries that we may have already seen to
3684 the symbol which just became indirect. */
fcfa13d2
AM
3685 edir->elf.got.refcount += eind->elf.got.refcount;
3686 eind->elf.got.refcount = 0;
a6aa5195
AM
3687
3688 /* And plt entries. */
3689 if (eind->elf.plt.plist != NULL)
3690 {
3691 if (edir->elf.plt.plist != NULL)
3692 {
3693 struct plt_entry **entp;
3694 struct plt_entry *ent;
3695
3696 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3697 {
3698 struct plt_entry *dent;
3699
3700 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3701 if (dent->sec == ent->sec && dent->addend == ent->addend)
3702 {
3703 dent->plt.refcount += ent->plt.refcount;
3704 *entp = ent->next;
3705 break;
3706 }
3707 if (dent == NULL)
3708 entp = &ent->next;
3709 }
3710 *entp = edir->elf.plt.plist;
3711 }
3712
3713 edir->elf.plt.plist = eind->elf.plt.plist;
3714 eind->elf.plt.plist = NULL;
3715 }
3716
fcfa13d2 3717 if (eind->elf.dynindx != -1)
25dbc73a 3718 {
fcfa13d2
AM
3719 if (edir->elf.dynindx != -1)
3720 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3721 edir->elf.dynstr_index);
a6aa5195
AM
3722 edir->elf.dynindx = eind->elf.dynindx;
3723 edir->elf.dynstr_index = eind->elf.dynstr_index;
3724 eind->elf.dynindx = -1;
3725 eind->elf.dynstr_index = 0;
25dbc73a 3726 }
25dbc73a 3727}
3dab13f6 3728
25dbc73a
AM
3729/* Hook called by the linker routine which adds symbols from an object
3730 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3731
25dbc73a
AM
3732static bfd_boolean
3733ppc_elf_add_symbol_hook (bfd *abfd,
3734 struct bfd_link_info *info,
3735 Elf_Internal_Sym *sym,
3736 const char **namep ATTRIBUTE_UNUSED,
3737 flagword *flagsp ATTRIBUTE_UNUSED,
3738 asection **secp,
3739 bfd_vma *valp)
3740{
3741 if (sym->st_shndx == SHN_COMMON
0e1862bb 3742 && !bfd_link_relocatable (info)
0c8d6e5c
AM
3743 && is_ppc_elf (info->output_bfd)
3744 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
3745 {
3746 /* Common symbols less than or equal to -G nn bytes are automatically
3747 put into .sbss. */
3748 struct ppc_elf_link_hash_table *htab;
3dab13f6 3749
25dbc73a
AM
3750 htab = ppc_elf_hash_table (info);
3751 if (htab->sbss == NULL)
3752 {
644285ef 3753 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3754
644285ef
AM
3755 if (!htab->elf.dynobj)
3756 htab->elf.dynobj = abfd;
3757
3496cb2a
L
3758 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3759 ".sbss",
3760 flags);
3761 if (htab->sbss == NULL)
25dbc73a 3762 return FALSE;
3dab13f6 3763 }
3dab13f6 3764
25dbc73a
AM
3765 *secp = htab->sbss;
3766 *valp = sym->st_size;
3767 }
3dab13f6 3768
a43942db 3769 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
f1885d1e
AM
3770 && (abfd->flags & DYNAMIC) == 0
3771 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
a43942db 3772 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
e054468f 3773
25dbc73a 3774 return TRUE;
3dab13f6
AM
3775}
3776\f
25dbc73a
AM
3777/* Find a linker generated pointer with a given addend and type. */
3778
3779static elf_linker_section_pointers_t *
3780elf_find_pointer_linker_section
3781 (elf_linker_section_pointers_t *linker_pointers,
3782 bfd_vma addend,
3783 elf_linker_section_t *lsect)
252b5132 3784{
25dbc73a
AM
3785 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3786 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3787 return linker_pointers;
252b5132 3788
25dbc73a
AM
3789 return NULL;
3790}
3791
3792/* Allocate a pointer to live in a linker created section. */
3793
3794static bfd_boolean
93d1b056
AM
3795elf_allocate_pointer_linker_section (bfd *abfd,
3796 elf_linker_section_t *lsect,
3797 struct elf_link_hash_entry *h,
3798 const Elf_Internal_Rela *rel)
25dbc73a
AM
3799{
3800 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3801 elf_linker_section_pointers_t *linker_section_ptr;
3802 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3803 bfd_size_type amt;
3804
3805 BFD_ASSERT (lsect != NULL);
3806
3807 /* Is this a global symbol? */
3808 if (h != NULL)
3809 {
3810 struct ppc_elf_link_hash_entry *eh;
3811
3812 /* Has this symbol already been allocated? If so, our work is done. */
3813 eh = (struct ppc_elf_link_hash_entry *) h;
3814 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3815 rel->r_addend,
3816 lsect))
3817 return TRUE;
3818
3819 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3820 }
3821 else
3822 {
0c8d6e5c 3823 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3824
25dbc73a
AM
3825 /* Allocation of a pointer to a local symbol. */
3826 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3827
3828 /* Allocate a table to hold the local symbols if first time. */
3829 if (!ptr)
3830 {
0ffa91dd 3831 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3832
3833 amt = num_symbols;
3834 amt *= sizeof (elf_linker_section_pointers_t *);
3835 ptr = bfd_zalloc (abfd, amt);
3836
3837 if (!ptr)
3838 return FALSE;
3839
3840 elf_local_ptr_offsets (abfd) = ptr;
3841 }
3842
3843 /* Has this symbol already been allocated? If so, our work is done. */
3844 if (elf_find_pointer_linker_section (ptr[r_symndx],
3845 rel->r_addend,
3846 lsect))
3847 return TRUE;
252b5132 3848
25dbc73a 3849 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3850 }
41fcb14e 3851
25dbc73a
AM
3852 /* Allocate space for a pointer in the linker section, and allocate
3853 a new pointer record from internal memory. */
3854 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3855 amt = sizeof (elf_linker_section_pointers_t);
3856 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3857
25dbc73a 3858 if (!linker_section_ptr)
7619e7c7 3859 return FALSE;
41fcb14e 3860
25dbc73a
AM
3861 linker_section_ptr->next = *ptr_linker_section_ptr;
3862 linker_section_ptr->addend = rel->r_addend;
3863 linker_section_ptr->lsect = lsect;
25dbc73a 3864 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3865
93d1b056
AM
3866 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3867 return FALSE;
25dbc73a
AM
3868 linker_section_ptr->offset = lsect->section->size;
3869 lsect->section->size += 4;
7619e7c7 3870
25dbc73a
AM
3871#ifdef DEBUG
3872 fprintf (stderr,
3873 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3874 lsect->name, (long) linker_section_ptr->offset,
3875 (long) lsect->section->size);
3876#endif
7619e7c7
AM
3877
3878 return TRUE;
41fcb14e
AM
3879}
3880
e054468f 3881static struct plt_entry **
25dbc73a
AM
3882update_local_sym_info (bfd *abfd,
3883 Elf_Internal_Shdr *symtab_hdr,
3884 unsigned long r_symndx,
3885 int tls_type)
252b5132 3886{
25dbc73a 3887 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
e054468f 3888 struct plt_entry **local_plt;
25dbc73a 3889 char *local_got_tls_masks;
252b5132 3890
25dbc73a 3891 if (local_got_refcounts == NULL)
252b5132 3892 {
25dbc73a
AM
3893 bfd_size_type size = symtab_hdr->sh_info;
3894
e054468f
AM
3895 size *= (sizeof (*local_got_refcounts)
3896 + sizeof (*local_plt)
3897 + sizeof (*local_got_tls_masks));
25dbc73a
AM
3898 local_got_refcounts = bfd_zalloc (abfd, size);
3899 if (local_got_refcounts == NULL)
e054468f 3900 return NULL;
25dbc73a 3901 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3902 }
41fcb14e 3903
e054468f
AM
3904 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3905 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
25dbc73a 3906 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
3907 if (tls_type != PLT_IFUNC)
3908 local_got_refcounts[r_symndx] += 1;
3909 return local_plt + r_symndx;
25dbc73a 3910}
41fcb14e 3911
a6aa5195 3912static bfd_boolean
3ec01793 3913update_plt_info (bfd *abfd, struct plt_entry **plist,
a6aa5195
AM
3914 asection *sec, bfd_vma addend)
3915{
3916 struct plt_entry *ent;
3917
32af9f6e
AM
3918 if (addend < 32768)
3919 sec = NULL;
3ec01793 3920 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3921 if (ent->sec == sec && ent->addend == addend)
3922 break;
3923 if (ent == NULL)
3924 {
3925 bfd_size_type amt = sizeof (*ent);
3926 ent = bfd_alloc (abfd, amt);
3927 if (ent == NULL)
3928 return FALSE;
3ec01793 3929 ent->next = *plist;
a6aa5195
AM
3930 ent->sec = sec;
3931 ent->addend = addend;
3932 ent->plt.refcount = 0;
3ec01793 3933 *plist = ent;
a6aa5195
AM
3934 }
3935 ent->plt.refcount += 1;
3936 return TRUE;
3937}
3938
3939static struct plt_entry *
3ec01793 3940find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
a6aa5195
AM
3941{
3942 struct plt_entry *ent;
3943
3944 if (addend < 32768)
3945 sec = NULL;
3ec01793 3946 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3947 if (ent->sec == sec && ent->addend == addend)
3948 break;
3949 return ent;
3950}
3951
e054468f
AM
3952static bfd_boolean
3953is_branch_reloc (enum elf_ppc_reloc_type r_type)
3954{
3955 return (r_type == R_PPC_PLTREL24
3956 || r_type == R_PPC_LOCAL24PC
3957 || r_type == R_PPC_REL24
3958 || r_type == R_PPC_REL14
3959 || r_type == R_PPC_REL14_BRTAKEN
3960 || r_type == R_PPC_REL14_BRNTAKEN
3961 || r_type == R_PPC_ADDR24
3962 || r_type == R_PPC_ADDR14
3963 || r_type == R_PPC_ADDR14_BRTAKEN
dfdaec14
AJ
3964 || r_type == R_PPC_ADDR14_BRNTAKEN
3965 || r_type == R_PPC_VLE_REL24);
e054468f
AM
3966}
3967
25dbc73a
AM
3968static void
3969bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3970{
4eca0228 3971 _bfd_error_handler
25dbc73a
AM
3972 (_("%B: relocation %s cannot be used when making a shared object"),
3973 abfd,
3974 ppc_elf_howto_table[r_type]->name);
3975 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3976}
3977
25dbc73a
AM
3978/* Look through the relocs for a section during the first phase, and
3979 allocate space in the global offset table or procedure linkage
3980 table. */
252b5132 3981
b34976b6 3982static bfd_boolean
25dbc73a
AM
3983ppc_elf_check_relocs (bfd *abfd,
3984 struct bfd_link_info *info,
3985 asection *sec,
3986 const Elf_Internal_Rela *relocs)
252b5132 3987{
7619e7c7 3988 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3989 Elf_Internal_Shdr *symtab_hdr;
3990 struct elf_link_hash_entry **sym_hashes;
3991 const Elf_Internal_Rela *rel;
3992 const Elf_Internal_Rela *rel_end;
a6aa5195 3993 asection *got2, *sreloc;
727fc41e 3994 struct elf_link_hash_entry *tga;
25dbc73a 3995
0e1862bb 3996 if (bfd_link_relocatable (info))
25dbc73a 3997 return TRUE;
252b5132 3998
c87b5a93
AM
3999 /* Don't do anything special with non-loaded, non-alloced sections.
4000 In particular, any relocs in such sections should not affect GOT
4001 and PLT reference counting (ie. we don't allow them to create GOT
4002 or PLT entries), there's no possibility or desire to optimize TLS
4003 relocs, and there's not much point in propagating relocs to shared
4004 libs that the dynamic linker won't relocate. */
4005 if ((sec->flags & SEC_ALLOC) == 0)
4006 return TRUE;
4007
252b5132 4008#ifdef DEBUG
25dbc73a
AM
4009 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4010 sec, abfd);
252b5132
RH
4011#endif
4012
0c8d6e5c 4013 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 4014
25dbc73a
AM
4015 /* Initialize howto table if not already done. */
4016 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4017 ppc_elf_howto_init ();
4018
7619e7c7 4019 htab = ppc_elf_hash_table (info);
25f23106
AM
4020 if (htab->glink == NULL)
4021 {
4022 if (htab->elf.dynobj == NULL)
4023 htab->elf.dynobj = abfd;
4024 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4025 return FALSE;
4026 }
727fc41e
AM
4027 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4028 FALSE, FALSE, TRUE);
0ffa91dd 4029 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 4030 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 4031 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4032 sreloc = NULL;
4033
4034 rel_end = relocs + sec->reloc_count;
4035 for (rel = relocs; rel < rel_end; rel++)
4036 {
4037 unsigned long r_symndx;
4038 enum elf_ppc_reloc_type r_type;
4039 struct elf_link_hash_entry *h;
727fc41e 4040 int tls_type;
cbf95972 4041 struct plt_entry **ifunc;
25dbc73a
AM
4042
4043 r_symndx = ELF32_R_SYM (rel->r_info);
4044 if (r_symndx < symtab_hdr->sh_info)
4045 h = NULL;
4046 else
973a3492
L
4047 {
4048 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4049 while (h->root.type == bfd_link_hash_indirect
4050 || h->root.type == bfd_link_hash_warning)
4051 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM
4052
4053 /* PR15323, ref flags aren't set for references in the same
4054 object. */
4055 h->root.non_ir_ref = 1;
973a3492 4056 }
25dbc73a
AM
4057
4058 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4059 This shows up in particular in an R_PPC_ADDR32 in the eabi
4060 startup code. */
3b36f7e6
AM
4061 if (h != NULL
4062 && htab->got == NULL
4063 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 4064 {
3b36f7e6
AM
4065 if (htab->elf.dynobj == NULL)
4066 htab->elf.dynobj = abfd;
4067 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4068 return FALSE;
4069 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 4070 }
252b5132 4071
727fc41e 4072 tls_type = 0;
de972ffa 4073 r_type = ELF32_R_TYPE (rel->r_info);
cbf95972 4074 ifunc = NULL;
06a162cf 4075 if (h == NULL && !htab->is_vxworks)
e054468f 4076 {
06a162cf
AM
4077 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4078 abfd, r_symndx);
4079 if (isym == NULL)
4080 return FALSE;
4081
0bed072f 4082 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
e054468f 4083 {
0bed072f 4084 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
06a162cf
AM
4085 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4086 PLT_IFUNC);
4087 if (ifunc == NULL)
e054468f
AM
4088 return FALSE;
4089
06a162cf
AM
4090 /* STT_GNU_IFUNC symbols must have a PLT entry;
4091 In a non-pie executable even when there are
4092 no plt calls. */
0e1862bb 4093 if (!bfd_link_pic (info)
0bed072f 4094 || is_branch_reloc (r_type))
e054468f 4095 {
0bed072f
AM
4096 bfd_vma addend = 0;
4097 if (r_type == R_PPC_PLTREL24)
4098 {
4099 ppc_elf_tdata (abfd)->makes_plt_call = 1;
0e1862bb 4100 if (bfd_link_pic (info))
0bed072f
AM
4101 addend = rel->r_addend;
4102 }
4103 if (!update_plt_info (abfd, ifunc, got2, addend))
4104 return FALSE;
e054468f
AM
4105 }
4106 }
25f23106
AM
4107 }
4108
de972ffa
AM
4109 if (!htab->is_vxworks
4110 && is_branch_reloc (r_type)
4111 && h != NULL
4112 && h == tga)
25f23106 4113 {
de972ffa
AM
4114 if (rel != relocs
4115 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4116 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4117 /* We have a new-style __tls_get_addr call with a marker
4118 reloc. */
4119 ;
4120 else
4121 /* Mark this section as having an old-style call. */
4122 sec->has_tls_get_addr_call = 1;
e054468f 4123 }
727fc41e 4124
25dbc73a
AM
4125 switch (r_type)
4126 {
727fc41e
AM
4127 case R_PPC_TLSGD:
4128 case R_PPC_TLSLD:
4129 /* These special tls relocs tie a call to __tls_get_addr with
4130 its parameter symbol. */
4131 break;
4132
25dbc73a
AM
4133 case R_PPC_GOT_TLSLD16:
4134 case R_PPC_GOT_TLSLD16_LO:
4135 case R_PPC_GOT_TLSLD16_HI:
4136 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4137 tls_type = TLS_TLS | TLS_LD;
4138 goto dogottls;
252b5132 4139
25dbc73a
AM
4140 case R_PPC_GOT_TLSGD16:
4141 case R_PPC_GOT_TLSGD16_LO:
4142 case R_PPC_GOT_TLSGD16_HI:
4143 case R_PPC_GOT_TLSGD16_HA:
4144 tls_type = TLS_TLS | TLS_GD;
4145 goto dogottls;
4146
4147 case R_PPC_GOT_TPREL16:
4148 case R_PPC_GOT_TPREL16_LO:
4149 case R_PPC_GOT_TPREL16_HI:
4150 case R_PPC_GOT_TPREL16_HA:
0e1862bb 4151 if (bfd_link_pic (info))
25dbc73a
AM
4152 info->flags |= DF_STATIC_TLS;
4153 tls_type = TLS_TLS | TLS_TPREL;
4154 goto dogottls;
4155
4156 case R_PPC_GOT_DTPREL16:
4157 case R_PPC_GOT_DTPREL16_LO:
4158 case R_PPC_GOT_DTPREL16_HI:
4159 case R_PPC_GOT_DTPREL16_HA:
4160 tls_type = TLS_TLS | TLS_DTPREL;
4161 dogottls:
4162 sec->has_tls_reloc = 1;
1a0670f3 4163 /* Fall through. */
252b5132 4164
25dbc73a
AM
4165 /* GOT16 relocations */
4166 case R_PPC_GOT16:
4167 case R_PPC_GOT16_LO:
4168 case R_PPC_GOT16_HI:
4169 case R_PPC_GOT16_HA:
4170 /* This symbol requires a global offset table entry. */
4171 if (htab->got == NULL)
4172 {
4173 if (htab->elf.dynobj == NULL)
4174 htab->elf.dynobj = abfd;
4175 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4176 return FALSE;
4177 }
4178 if (h != NULL)
4179 {
4180 h->got.refcount += 1;
4181 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4182 }
4183 else
4184 /* This is a global offset table entry for a local symbol. */
4185 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4186 return FALSE;
91e21fb7
AM
4187
4188 /* We may also need a plt entry if the symbol turns out to be
4189 an ifunc. */
0e1862bb 4190 if (h != NULL && !bfd_link_pic (info))
91e21fb7
AM
4191 {
4192 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4193 return FALSE;
4194 }
25dbc73a 4195 break;
252b5132 4196
25dbc73a
AM
4197 /* Indirect .sdata relocation. */
4198 case R_PPC_EMB_SDAI16:
0e1862bb 4199 if (bfd_link_pic (info))
25dbc73a
AM
4200 {
4201 bad_shared_reloc (abfd, r_type);
4202 return FALSE;
4203 }
93d1b056
AM
4204 htab->sdata[0].sym->ref_regular = 1;
4205 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4206 h, rel))
25dbc73a 4207 return FALSE;
046183de
AM
4208 if (h != NULL)
4209 {
4210 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4211 h->non_got_ref = TRUE;
4212 }
25dbc73a 4213 break;
252b5132 4214
25dbc73a
AM
4215 /* Indirect .sdata2 relocation. */
4216 case R_PPC_EMB_SDA2I16:
0e1862bb 4217 if (bfd_link_pic (info))
25dbc73a
AM
4218 {
4219 bad_shared_reloc (abfd, r_type);
4220 return FALSE;
4221 }
93d1b056
AM
4222 htab->sdata[1].sym->ref_regular = 1;
4223 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4224 h, rel))
25dbc73a 4225 return FALSE;
046183de
AM
4226 if (h != NULL)
4227 {
4228 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4229 h->non_got_ref = TRUE;
4230 }
25dbc73a 4231 break;
252b5132 4232
93d1b056
AM
4233 case R_PPC_SDAREL16:
4234 htab->sdata[0].sym->ref_regular = 1;
1a0670f3 4235 /* Fall through. */
93d1b056 4236
b9c361e0
JL
4237 case R_PPC_VLE_SDAREL_LO16A:
4238 case R_PPC_VLE_SDAREL_LO16D:
4239 case R_PPC_VLE_SDAREL_HI16A:
4240 case R_PPC_VLE_SDAREL_HI16D:
4241 case R_PPC_VLE_SDAREL_HA16A:
4242 case R_PPC_VLE_SDAREL_HA16D:
046183de
AM
4243 if (h != NULL)
4244 {
4245 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4246 h->non_got_ref = TRUE;
4247 }
4248 break;
4249
b9c361e0
JL
4250 case R_PPC_VLE_REL8:
4251 case R_PPC_VLE_REL15:
4252 case R_PPC_VLE_REL24:
4253 case R_PPC_VLE_LO16A:
4254 case R_PPC_VLE_LO16D:
4255 case R_PPC_VLE_HI16A:
4256 case R_PPC_VLE_HI16D:
4257 case R_PPC_VLE_HA16A:
4258 case R_PPC_VLE_HA16D:
4259 break;
4260
25dbc73a 4261 case R_PPC_EMB_SDA2REL:
0e1862bb 4262 if (bfd_link_pic (info))
046183de
AM
4263 {
4264 bad_shared_reloc (abfd, r_type);
4265 return FALSE;
4266 }
93d1b056 4267 htab->sdata[1].sym->ref_regular = 1;
046183de
AM
4268 if (h != NULL)
4269 {
4270 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4271 h->non_got_ref = TRUE;
4272 }
4273 break;
4274
b9c361e0
JL
4275 case R_PPC_VLE_SDA21_LO:
4276 case R_PPC_VLE_SDA21:
25dbc73a
AM
4277 case R_PPC_EMB_SDA21:
4278 case R_PPC_EMB_RELSDA:
0e1862bb 4279 if (bfd_link_pic (info))
046183de
AM
4280 {
4281 bad_shared_reloc (abfd, r_type);
4282 return FALSE;
4283 }
046183de
AM
4284 if (h != NULL)
4285 {
4286 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4287 h->non_got_ref = TRUE;
4288 }
4289 break;
4290
25dbc73a
AM
4291 case R_PPC_EMB_NADDR32:
4292 case R_PPC_EMB_NADDR16:
4293 case R_PPC_EMB_NADDR16_LO:
4294 case R_PPC_EMB_NADDR16_HI:
4295 case R_PPC_EMB_NADDR16_HA:
0e1862bb 4296 if (bfd_link_pic (info))
25dbc73a
AM
4297 {
4298 bad_shared_reloc (abfd, r_type);
4299 return FALSE;
4300 }
4dc4a9a5 4301 if (h != NULL)
046183de 4302 h->non_got_ref = TRUE;
25dbc73a 4303 break;
252b5132 4304
25dbc73a 4305 case R_PPC_PLTREL24:
de972ffa 4306 if (h == NULL)
6d78d0b9
AM
4307 break;
4308 /* Fall through */
4309 case R_PPC_PLT32:
25dbc73a
AM
4310 case R_PPC_PLTREL32:
4311 case R_PPC_PLT16_LO:
4312 case R_PPC_PLT16_HI:
4313 case R_PPC_PLT16_HA:
4314#ifdef DEBUG
4315 fprintf (stderr, "Reloc requires a PLT entry\n");
4316#endif
cbf95972 4317 /* This symbol requires a procedure linkage table entry. */
25dbc73a
AM
4318 if (h == NULL)
4319 {
cbf95972
AM
4320 if (ifunc == NULL)
4321 {
4322 /* It does not make sense to have a procedure linkage
4323 table entry for a non-ifunc local symbol. */
4324 info->callbacks->einfo
4325 (_("%P: %H: %s reloc against local symbol\n"),
4326 abfd, sec, rel->r_offset,
4327 ppc_elf_howto_table[r_type]->name);
4328 bfd_set_error (bfd_error_bad_value);
4329 return FALSE;
4330 }
25dbc73a 4331 }
a6aa5195
AM
4332 else
4333 {
016687f8 4334 bfd_vma addend = 0;
ee05f2fe 4335
016687f8
AM
4336 if (r_type == R_PPC_PLTREL24)
4337 {
4338 ppc_elf_tdata (abfd)->makes_plt_call = 1;
0e1862bb 4339 if (bfd_link_pic (info))
a877a2b6 4340 addend = rel->r_addend;
016687f8 4341 }
a6aa5195 4342 h->needs_plt = 1;
32af9f6e 4343 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
a6aa5195
AM
4344 return FALSE;
4345 }
25dbc73a 4346 break;
ee05f2fe 4347
25dbc73a
AM
4348 /* The following relocations don't need to propagate the
4349 relocation if linking a shared object since they are
4350 section relative. */
4351 case R_PPC_SECTOFF:
4352 case R_PPC_SECTOFF_LO:
4353 case R_PPC_SECTOFF_HI:
4354 case R_PPC_SECTOFF_HA:
4355 case R_PPC_DTPREL16:
4356 case R_PPC_DTPREL16_LO:
4357 case R_PPC_DTPREL16_HI:
4358 case R_PPC_DTPREL16_HA:
4359 case R_PPC_TOC16:
4360 break;
252b5132 4361
d7128ce4
AM
4362 case R_PPC_REL16:
4363 case R_PPC_REL16_LO:
4364 case R_PPC_REL16_HI:
4365 case R_PPC_REL16_HA:
a680de9a 4366 case R_PPC_REL16DX_HA:
016687f8 4367 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
4368 break;
4369
a6aa5195 4370 /* These are just markers. */
25dbc73a
AM
4371 case R_PPC_TLS:
4372 case R_PPC_EMB_MRKREF:
4373 case R_PPC_NONE:
4374 case R_PPC_max:
32af9f6e
AM
4375 case R_PPC_RELAX:
4376 case R_PPC_RELAX_PLT:
4377 case R_PPC_RELAX_PLTREL24:
25dbc73a 4378 break;
252b5132 4379
25dbc73a
AM
4380 /* These should only appear in dynamic objects. */
4381 case R_PPC_COPY:
4382 case R_PPC_GLOB_DAT:
4383 case R_PPC_JMP_SLOT:
4384 case R_PPC_RELATIVE:
e054468f 4385 case R_PPC_IRELATIVE:
25dbc73a 4386 break;
252b5132 4387
25dbc73a
AM
4388 /* These aren't handled yet. We'll report an error later. */
4389 case R_PPC_ADDR30:
4390 case R_PPC_EMB_RELSEC16:
4391 case R_PPC_EMB_RELST_LO:
4392 case R_PPC_EMB_RELST_HI:
4393 case R_PPC_EMB_RELST_HA:
4394 case R_PPC_EMB_BIT_FLD:
4395 break;
252b5132 4396
25dbc73a
AM
4397 /* This refers only to functions defined in the shared library. */
4398 case R_PPC_LOCAL24PC:
727fc41e 4399 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
4400 {
4401 htab->plt_type = PLT_OLD;
4402 htab->old_bfd = abfd;
4403 }
c7e17e05
AM
4404 if (h != NULL && h->type == STT_GNU_IFUNC)
4405 {
c7e17e05
AM
4406 h->needs_plt = 1;
4407 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4408 return FALSE;
4409 }
25dbc73a 4410 break;
252b5132 4411
25dbc73a
AM
4412 /* This relocation describes the C++ object vtable hierarchy.
4413 Reconstruct it for later use during GC. */
4414 case R_PPC_GNU_VTINHERIT:
4415 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4416 return FALSE;
4417 break;
252b5132 4418
25dbc73a
AM
4419 /* This relocation describes which C++ vtable entries are actually
4420 used. Record for later use during GC. */
4421 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
4422 BFD_ASSERT (h != NULL);
4423 if (h != NULL
4424 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
4425 return FALSE;
4426 break;
252b5132 4427
25dbc73a
AM
4428 /* We shouldn't really be seeing these. */
4429 case R_PPC_TPREL32:
1d483afe
AM
4430 case R_PPC_TPREL16:
4431 case R_PPC_TPREL16_LO:
4432 case R_PPC_TPREL16_HI:
4433 case R_PPC_TPREL16_HA:
0e1862bb 4434 if (bfd_link_pic (info))
25dbc73a
AM
4435 info->flags |= DF_STATIC_TLS;
4436 goto dodyn;
252b5132 4437
25dbc73a
AM
4438 /* Nor these. */
4439 case R_PPC_DTPMOD32:
4440 case R_PPC_DTPREL32:
4441 goto dodyn;
252b5132 4442
9edfd1af
AM
4443 case R_PPC_REL32:
4444 if (h == NULL
4445 && got2 != NULL
4446 && (sec->flags & SEC_CODE) != 0
0e1862bb 4447 && bfd_link_pic (info)
4a3dc543 4448 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
4449 {
4450 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4451 the start of a function, which assembles to a REL32
4452 reference to .got2. If we detect one of these, then
4453 force the old PLT layout because the linker cannot
4454 reliably deduce the GOT pointer value needed for
4455 PLT call stubs. */
4456 asection *s;
87d72d41 4457 Elf_Internal_Sym *isym;
9edfd1af 4458
87d72d41
AM
4459 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4460 abfd, r_symndx);
4461 if (isym == NULL)
4462 return FALSE;
4463
4464 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
9edfd1af 4465 if (s == got2)
016687f8
AM
4466 {
4467 htab->plt_type = PLT_OLD;
4468 htab->old_bfd = abfd;
4469 }
9edfd1af 4470 }
7123df0e 4471 if (h == NULL || h == htab->elf.hgot)
fd38b44c 4472 break;
625af618
AM
4473 /* fall through */
4474
4475 case R_PPC_ADDR32:
4476 case R_PPC_ADDR16:
4477 case R_PPC_ADDR16_LO:
4478 case R_PPC_ADDR16_HI:
4479 case R_PPC_ADDR16_HA:
4480 case R_PPC_UADDR32:
4481 case R_PPC_UADDR16:
0e1862bb 4482 if (h != NULL && !bfd_link_pic (info))
625af618
AM
4483 {
4484 /* We may need a plt entry if the symbol turns out to be
4485 a function defined in a dynamic object. */
3ec01793 4486 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
625af618
AM
4487 return FALSE;
4488
4489 /* We may need a copy reloc too. */
4490 h->non_got_ref = 1;
4491 h->pointer_equality_needed = 1;
d3e454b9
AM
4492 if (r_type == R_PPC_ADDR16_HA)
4493 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4494 if (r_type == R_PPC_ADDR16_LO)
4495 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
625af618
AM
4496 }
4497 goto dodyn;
9edfd1af 4498
25dbc73a
AM
4499 case R_PPC_REL24:
4500 case R_PPC_REL14:
4501 case R_PPC_REL14_BRTAKEN:
4502 case R_PPC_REL14_BRNTAKEN:
d7128ce4 4503 if (h == NULL)
25dbc73a 4504 break;
7123df0e 4505 if (h == htab->elf.hgot)
d7128ce4 4506 {
7123df0e 4507 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4508 {
4509 htab->plt_type = PLT_OLD;
4510 htab->old_bfd = abfd;
4511 }
d7128ce4
AM
4512 break;
4513 }
25dbc73a 4514 /* fall through */
ee05f2fe 4515
25dbc73a 4516 case R_PPC_ADDR24:
25dbc73a
AM
4517 case R_PPC_ADDR14:
4518 case R_PPC_ADDR14_BRTAKEN:
4519 case R_PPC_ADDR14_BRNTAKEN:
0e1862bb 4520 if (h != NULL && !bfd_link_pic (info))
25dbc73a
AM
4521 {
4522 /* We may need a plt entry if the symbol turns out to be
4523 a function defined in a dynamic object. */
e054468f 4524 h->needs_plt = 1;
de972ffa 4525 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
a6aa5195 4526 return FALSE;
625af618 4527 break;
25dbc73a 4528 }
7619e7c7 4529
25dbc73a
AM
4530 dodyn:
4531 /* If we are creating a shared library, and this is a reloc
4532 against a global symbol, or a non PC relative reloc
4533 against a local symbol, then we need to copy the reloc
4534 into the shared library. However, if we are linking with
4535 -Bsymbolic, we do not need to copy a reloc against a
4536 global symbol which is defined in an object we are
4537 including in the link (i.e., DEF_REGULAR is set). At
4538 this point we have not seen all the input files, so it is
4539 possible that DEF_REGULAR is not set now but will be set
4540 later (it is never cleared). In case of a weak definition,
4541 DEF_REGULAR may be cleared later by a strong definition in
4542 a shared library. We account for that possibility below by
4543 storing information in the dyn_relocs field of the hash
4544 table entry. A similar situation occurs when creating
4545 shared libraries and symbol visibility changes render the
4546 symbol local.
7619e7c7 4547
25dbc73a
AM
4548 If on the other hand, we are creating an executable, we
4549 may need to keep relocations for symbols satisfied by a
4550 dynamic library if we manage to avoid copy relocs for the
4551 symbol. */
0e1862bb 4552 if ((bfd_link_pic (info)
1d483afe 4553 && (must_be_dyn_reloc (info, r_type)
25dbc73a 4554 || (h != NULL
198f1157 4555 && (!SYMBOLIC_BIND (info, h)
25dbc73a
AM
4556 || h->root.type == bfd_link_hash_defweak
4557 || !h->def_regular))))
4558 || (ELIMINATE_COPY_RELOCS
0e1862bb 4559 && !bfd_link_pic (info)
25dbc73a
AM
4560 && h != NULL
4561 && (h->root.type == bfd_link_hash_defweak
de972ffa 4562 || !h->def_regular)))
25dbc73a 4563 {
25dbc73a
AM
4564#ifdef DEBUG
4565 fprintf (stderr,
4566 "ppc_elf_check_relocs needs to "
4567 "create relocation for %s\n",
4568 (h && h->root.root.string
4569 ? h->root.root.string : "<unknown>"));
4570#endif
4571 if (sreloc == NULL)
4572 {
c9a2f333
AM
4573 if (htab->elf.dynobj == NULL)
4574 htab->elf.dynobj = abfd;
83bac4b0
NC
4575
4576 sreloc = _bfd_elf_make_dynamic_reloc_section
4577 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4578
25dbc73a 4579 if (sreloc == NULL)
83bac4b0 4580 return FALSE;
25dbc73a 4581 }
7619e7c7 4582
25dbc73a
AM
4583 /* If this is a global symbol, we count the number of
4584 relocations we need for this symbol. */
4585 if (h != NULL)
4586 {
f95f8542
AM
4587 struct elf_dyn_relocs *p;
4588 struct elf_dyn_relocs **rel_head;
4589
91d6fa6a 4590 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
f95f8542
AM
4591 p = *rel_head;
4592 if (p == NULL || p->sec != sec)
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->count = 0;
4601 p->pc_count = 0;
4602 }
4603 p->count += 1;
4604 if (!must_be_dyn_reloc (info, r_type))
4605 p->pc_count += 1;
25dbc73a
AM
4606 }
4607 else
4608 {
4609 /* Track dynamic relocs needed for local syms too.
4610 We really need local syms available to do this
4611 easily. Oh well. */
f95f8542
AM
4612 struct ppc_dyn_relocs *p;
4613 struct ppc_dyn_relocs **rel_head;
4614 bfd_boolean is_ifunc;
25dbc73a 4615 asection *s;
6edfbbad 4616 void *vpp;
87d72d41 4617 Elf_Internal_Sym *isym;
6edfbbad 4618
87d72d41
AM
4619 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4620 abfd, r_symndx);
4621 if (isym == NULL)
25dbc73a 4622 return FALSE;
7fce784e 4623
87d72d41
AM
4624 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4625 if (s == NULL)
4626 s = sec;
4627
6edfbbad 4628 vpp = &elf_section_data (s)->local_dynrel;
f95f8542
AM
4629 rel_head = (struct ppc_dyn_relocs **) vpp;
4630 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4631 p = *rel_head;
4632 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4633 p = p->next;
4634 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4635 {
4636 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4637 if (p == NULL)
4638 return FALSE;
4639 p->next = *rel_head;
4640 *rel_head = p;
4641 p->sec = sec;
4642 p->ifunc = is_ifunc;
4643 p->count = 0;
4644 }
4645 p->count += 1;
25dbc73a 4646 }
7619e7c7 4647 }
25dbc73a
AM
4648
4649 break;
7619e7c7
AM
4650 }
4651 }
ee05f2fe 4652
25dbc73a
AM
4653 return TRUE;
4654}
4655\f
005d79fd
AM
4656/* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4657 and OBFD, and merge non-conflicting ones. */
4658void
4659_bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, bfd *obfd)
34c8bcba 4660{
c6e65352
DJ
4661 obj_attribute *in_attr, *in_attrs;
4662 obj_attribute *out_attr, *out_attrs;
34c8bcba 4663
c6e65352
DJ
4664 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4665 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4666
c6e65352
DJ
4667 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4668 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
005d79fd 4669
c6e65352 4670 if (in_attr->i != out_attr->i)
34c8bcba 4671 {
005d79fd
AM
4672 int in_fp = in_attr->i & 3;
4673 int out_fp = out_attr->i & 3;
4674
4675 if (in_fp == 0)
34c8bcba 4676 ;
005d79fd
AM
4677 else if (out_fp == 0)
4678 {
4679 out_attr->type = 1;
4680 out_attr->i ^= in_fp;
4681 }
4682 else if (out_fp != 2 && in_fp == 2)
34c8bcba
JM
4683 _bfd_error_handler
4684 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
005d79fd
AM
4685 else if (out_fp == 2 && in_fp != 2)
4686 _bfd_error_handler
4687 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4688 else if (out_fp == 1 && in_fp == 3)
3c7b9897 4689 _bfd_error_handler
005d79fd
AM
4690 (_("Warning: %B uses double-precision hard float, "
4691 "%B uses single-precision hard float"), obfd, ibfd);
4692 else if (out_fp == 3 && in_fp == 1)
3c7b9897 4693 _bfd_error_handler
005d79fd
AM
4694 (_("Warning: %B uses double-precision hard float, "
4695 "%B uses single-precision hard float"), ibfd, obfd);
4696
4697 in_fp = in_attr->i & 0xc;
4698 out_fp = out_attr->i & 0xc;
4699 if (in_fp == 0)
4700 ;
4701 else if (out_fp == 0)
4702 {
4703 out_attr->type = 1;
4704 out_attr->i ^= in_fp;
4705 }
4706 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
3c7b9897 4707 _bfd_error_handler
005d79fd
AM
4708 (_("Warning: %B uses 64-bit long double, "
4709 "%B uses 128-bit long double"), ibfd, obfd);
4710 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
34c8bcba 4711 _bfd_error_handler
005d79fd
AM
4712 (_("Warning: %B uses 64-bit long double, "
4713 "%B uses 128-bit long double"), obfd, ibfd);
4714 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
34c8bcba 4715 _bfd_error_handler
005d79fd
AM
4716 (_("Warning: %B uses IBM long double, "
4717 "%B uses IEEE long double"), ibfd, obfd);
4718 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
34c8bcba 4719 _bfd_error_handler
005d79fd
AM
4720 (_("Warning: %B uses IBM long double, "
4721 "%B uses IEEE long double"), obfd, ibfd);
c6e65352 4722 }
005d79fd
AM
4723}
4724
4725/* Merge object attributes from IBFD into OBFD. Warn if
4726 there are conflicting attributes. */
4727static bfd_boolean
4728ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4729{
4730 obj_attribute *in_attr, *in_attrs;
4731 obj_attribute *out_attr, *out_attrs;
4732
4733 _bfd_elf_ppc_merge_fp_attributes (ibfd, obfd);
4734
4735 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4736 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
c6e65352
DJ
4737
4738 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4739 merge non-conflicting ones. */
4740 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4741 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4742 if (in_attr->i != out_attr->i)
4743 {
005d79fd
AM
4744 int in_vec = in_attr->i & 3;
4745 int out_vec = out_attr->i & 3;
c6e65352 4746
005d79fd
AM
4747 if (in_vec == 0)
4748 ;
4749 else if (out_vec == 0)
c6e65352 4750 {
005d79fd
AM
4751 out_attr->type = 1;
4752 out_attr->i = in_vec;
c6e65352 4753 }
c6e65352
DJ
4754 /* For now, allow generic to transition to AltiVec or SPE
4755 without a warning. If GCC marked files with their stack
4756 alignment and used don't-care markings for files which are
4757 not affected by the vector ABI, we could warn about this
4758 case too. */
005d79fd 4759 else if (in_vec == 1)
c6e65352 4760 ;
005d79fd
AM
4761 else if (out_vec == 1)
4762 {
4763 out_attr->type = 1;
4764 out_attr->i = in_vec;
4765 }
4766 else if (out_vec < in_vec)
c6e65352 4767 _bfd_error_handler
005d79fd
AM
4768 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4769 obfd, ibfd);
4770 else if (out_vec > in_vec)
c6e65352 4771 _bfd_error_handler
005d79fd
AM
4772 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4773 ibfd, obfd);
34c8bcba
JM
4774 }
4775
f82e0623
NF
4776 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4777 and merge non-conflicting ones. */
4778 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4779 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4780 if (in_attr->i != out_attr->i)
4781 {
005d79fd
AM
4782 int in_struct = in_attr->i & 3;
4783 int out_struct = out_attr->i & 3;
4784
4785 if (in_struct == 0 || in_struct == 3)
f82e0623 4786 ;
005d79fd
AM
4787 else if (out_struct == 0)
4788 {
4789 out_attr->type = 1;
4790 out_attr->i = in_struct;
4791 }
4792 else if (out_struct < in_struct)
4793 _bfd_error_handler
4794 (_("Warning: %B uses r3/r4 for small structure returns, "
4795 "%B uses memory"), obfd, ibfd);
4796 else if (out_struct > in_struct)
4797 _bfd_error_handler
4798 (_("Warning: %B uses r3/r4 for small structure returns, "
4799 "%B uses memory"), ibfd, obfd);
f82e0623
NF
4800 }
4801
34c8bcba
JM
4802 /* Merge Tag_compatibility attributes and any common GNU ones. */
4803 _bfd_elf_merge_object_attributes (ibfd, obfd);
4804
4805 return TRUE;
4806}
4807
8853c3d3
AM
4808/* Merge backend specific data from an object file to the output
4809 object file when linking. */
4810
4811static bfd_boolean
4812ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4813{
4814 flagword old_flags;
4815 flagword new_flags;
4816 bfd_boolean error;
4817
0c8d6e5c 4818 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4819 return TRUE;
4820
cc643b88 4821 /* Check if we have the same endianness. */
8853c3d3
AM
4822 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4823 return FALSE;
4824
34c8bcba
JM
4825 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4826 return FALSE;
4827
8853c3d3
AM
4828 new_flags = elf_elfheader (ibfd)->e_flags;
4829 old_flags = elf_elfheader (obfd)->e_flags;
4830 if (!elf_flags_init (obfd))
4831 {
4832 /* First call, no flags set. */
4833 elf_flags_init (obfd) = TRUE;
4834 elf_elfheader (obfd)->e_flags = new_flags;
4835 }
4836
4837 /* Compatible flags are ok. */
4838 else if (new_flags == old_flags)
4839 ;
4840
4841 /* Incompatible flags. */
4842 else
4843 {
4844 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4845 to be linked with either. */
4846 error = FALSE;
4847 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4848 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4849 {
4850 error = TRUE;
4eca0228 4851 _bfd_error_handler
8853c3d3
AM
4852 (_("%B: compiled with -mrelocatable and linked with "
4853 "modules compiled normally"), ibfd);
4854 }
4855 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4856 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4857 {
4858 error = TRUE;
4eca0228 4859 _bfd_error_handler
8853c3d3
AM
4860 (_("%B: compiled normally and linked with "
4861 "modules compiled with -mrelocatable"), ibfd);
4862 }
4863
4864 /* The output is -mrelocatable-lib iff both the input files are. */
4865 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4866 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4867
4868 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4869 but each input file is either -mrelocatable or -mrelocatable-lib. */
4870 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4871 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4872 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4873 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4874
4875 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4876 any module uses it. */
4877 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4878
4879 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4880 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4881
4882 /* Warn about any other mismatches. */
4883 if (new_flags != old_flags)
4884 {
4885 error = TRUE;
4eca0228 4886 _bfd_error_handler
8853c3d3
AM
4887 (_("%B: uses different e_flags (0x%lx) fields "
4888 "than previous modules (0x%lx)"),
4889 ibfd, (long) new_flags, (long) old_flags);
4890 }
4891
4892 if (error)
4893 {
4894 bfd_set_error (bfd_error_bad_value);
4895 return FALSE;
4896 }
4897 }
4898
4899 return TRUE;
4900}
b9c361e0
JL
4901
4902static void
86c95733
AM
4903ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4904 bfd_vma value,
4905 split16_format_type split16_format)
b9c361e0
JL
4906
4907{
86c95733 4908 unsigned int insn, top5;
b9c361e0 4909
86c95733
AM
4910 insn = bfd_get_32 (output_bfd, loc);
4911 top5 = value & 0xf800;
4912 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
dfdaec14 4913 insn &= (split16_format == split16a_type ? ~0x1f007ff : ~0x1f07ff);
b9c361e0 4914 insn |= top5;
86c95733
AM
4915 insn |= value & 0x7ff;
4916 bfd_put_32 (output_bfd, insn, loc);
b9c361e0
JL
4917}
4918
8853c3d3 4919\f
d7128ce4
AM
4920/* Choose which PLT scheme to use, and set .plt flags appropriately.
4921 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4922int
4923ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
5446cbdf 4924 struct bfd_link_info *info)
d7128ce4
AM
4925{
4926 struct ppc_elf_link_hash_table *htab;
9d8504b1 4927 flagword flags;
d7128ce4
AM
4928
4929 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4930
4931 if (htab->plt_type == PLT_UNSET)
016687f8 4932 {
b3874e1a
AM
4933 struct elf_link_hash_entry *h;
4934
5446cbdf 4935 if (htab->params->plt_style == PLT_OLD)
016687f8 4936 htab->plt_type = PLT_OLD;
0e1862bb 4937 else if (bfd_link_pic (info)
b3874e1a
AM
4938 && htab->elf.dynamic_sections_created
4939 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4940 FALSE, FALSE, TRUE)) != NULL
4941 && (h->type == STT_FUNC
4942 || h->needs_plt)
4943 && h->ref_regular
4944 && !(SYMBOL_CALLS_LOCAL (info, h)
4945 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4946 && h->root.type == bfd_link_hash_undefweak)))
4947 {
4948 /* Profiling of shared libs (and pies) is not supported with
4949 secure plt, because ppc32 does profiling before a
4950 function prologue and a secure plt pic call stubs needs
4951 r30 to be set up. */
4952 htab->plt_type = PLT_OLD;
4953 }
016687f8
AM
4954 else
4955 {
4956 bfd *ibfd;
5446cbdf 4957 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
016687f8
AM
4958
4959 /* Look through the reloc flags left by ppc_elf_check_relocs.
4960 Use the old style bss plt if a file makes plt calls
4961 without using the new relocs, and if ld isn't given
4962 --secure-plt and we never see REL16 relocs. */
4963 if (plt_type == PLT_UNSET)
4964 plt_type = PLT_OLD;
c72f2fb2 4965 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
0c8d6e5c 4966 if (is_ppc_elf (ibfd))
016687f8
AM
4967 {
4968 if (ppc_elf_tdata (ibfd)->has_rel16)
4969 plt_type = PLT_NEW;
4970 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4971 {
4972 plt_type = PLT_OLD;
4973 htab->old_bfd = ibfd;
4974 break;
4975 }
4976 }
4977 htab->plt_type = plt_type;
4978 }
4979 }
5446cbdf 4980 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
b3874e1a
AM
4981 {
4982 if (htab->old_bfd != NULL)
4983 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4984 htab->old_bfd);
4985 else
4986 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4987 }
d7128ce4 4988
4a3dc543 4989 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4990
4a3dc543 4991 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
4992 {
4993 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4994 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
4995
4996 /* The new PLT is a loaded section. */
4997 if (htab->plt != NULL
4998 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4999 return -1;
5000
5001 /* The new GOT is not executable. */
5002 if (htab->got != NULL
5003 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
5004 return -1;
d7128ce4
AM
5005 }
5006 else
5007 {
5008 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
5009 if (htab->glink != NULL
5010 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5011 return -1;
d7128ce4 5012 }
4a3dc543 5013 return htab->plt_type == PLT_NEW;
d7128ce4
AM
5014}
5015\f
25dbc73a
AM
5016/* Return the section that should be marked against GC for a given
5017 relocation. */
586119b3 5018
25dbc73a
AM
5019static asection *
5020ppc_elf_gc_mark_hook (asection *sec,
07adf181 5021 struct bfd_link_info *info,
25dbc73a
AM
5022 Elf_Internal_Rela *rel,
5023 struct elf_link_hash_entry *h,
5024 Elf_Internal_Sym *sym)
5025{
5026 if (h != NULL)
07adf181
AM
5027 switch (ELF32_R_TYPE (rel->r_info))
5028 {
5029 case R_PPC_GNU_VTINHERIT:
5030 case R_PPC_GNU_VTENTRY:
5031 return NULL;
5032 }
5033
5034 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 5035}
a876ecf9 5036
25dbc73a
AM
5037/* Update the got, plt and dynamic reloc reference counts for the
5038 section being removed. */
5039
5040static bfd_boolean
5041ppc_elf_gc_sweep_hook (bfd *abfd,
5042 struct bfd_link_info *info,
5043 asection *sec,
5044 const Elf_Internal_Rela *relocs)
5045{
5046 struct ppc_elf_link_hash_table *htab;
5047 Elf_Internal_Shdr *symtab_hdr;
5048 struct elf_link_hash_entry **sym_hashes;
5049 bfd_signed_vma *local_got_refcounts;
5050 const Elf_Internal_Rela *rel, *relend;
a6aa5195 5051 asection *got2;
25dbc73a 5052
0e1862bb 5053 if (bfd_link_relocatable (info))
7dda2462
TG
5054 return TRUE;
5055
c87b5a93
AM
5056 if ((sec->flags & SEC_ALLOC) == 0)
5057 return TRUE;
5058
25dbc73a
AM
5059 elf_section_data (sec)->local_dynrel = NULL;
5060
5061 htab = ppc_elf_hash_table (info);
0ffa91dd 5062 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
5063 sym_hashes = elf_sym_hashes (abfd);
5064 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 5065 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
5066
5067 relend = relocs + sec->reloc_count;
5068 for (rel = relocs; rel < relend; rel++)
5069 {
5070 unsigned long r_symndx;
5071 enum elf_ppc_reloc_type r_type;
5072 struct elf_link_hash_entry *h = NULL;
5073
5074 r_symndx = ELF32_R_SYM (rel->r_info);
5075 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 5076 {
6061a67d 5077 struct elf_dyn_relocs **pp, *p;
25dbc73a
AM
5078 struct ppc_elf_link_hash_entry *eh;
5079
5080 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5081 while (h->root.type == bfd_link_hash_indirect
5082 || h->root.type == bfd_link_hash_warning)
5083 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5084 eh = (struct ppc_elf_link_hash_entry *) h;
5085
5086 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5087 if (p->sec == sec)
5088 {
5089 /* Everything must go for SEC. */
5090 *pp = p->next;
5091 break;
5092 }
a876ecf9 5093 }
ee05f2fe 5094
25dbc73a 5095 r_type = ELF32_R_TYPE (rel->r_info);
de972ffa
AM
5096 if (!htab->is_vxworks
5097 && h == NULL
5098 && local_got_refcounts != NULL
0e1862bb 5099 && (!bfd_link_pic (info)
de972ffa 5100 || is_branch_reloc (r_type)))
e054468f 5101 {
de972ffa
AM
5102 struct plt_entry **local_plt = (struct plt_entry **)
5103 (local_got_refcounts + symtab_hdr->sh_info);
5104 char *local_got_tls_masks = (char *)
5105 (local_plt + symtab_hdr->sh_info);
5106 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
e054468f 5107 {
de972ffa 5108 struct plt_entry **ifunc = local_plt + r_symndx;
a877a2b6
AM
5109 bfd_vma addend = 0;
5110 struct plt_entry *ent;
5111
0e1862bb 5112 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
a877a2b6
AM
5113 addend = rel->r_addend;
5114 ent = find_plt_ent (ifunc, got2, addend);
e054468f
AM
5115 if (ent->plt.refcount > 0)
5116 ent->plt.refcount -= 1;
5117 continue;
5118 }
5119 }
5120
25dbc73a 5121 switch (r_type)
ee05f2fe 5122 {
25dbc73a
AM
5123 case R_PPC_GOT_TLSLD16:
5124 case R_PPC_GOT_TLSLD16_LO:
5125 case R_PPC_GOT_TLSLD16_HI:
5126 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
5127 case R_PPC_GOT_TLSGD16:
5128 case R_PPC_GOT_TLSGD16_LO:
5129 case R_PPC_GOT_TLSGD16_HI:
5130 case R_PPC_GOT_TLSGD16_HA:
5131 case R_PPC_GOT_TPREL16:
5132 case R_PPC_GOT_TPREL16_LO:
5133 case R_PPC_GOT_TPREL16_HI:
5134 case R_PPC_GOT_TPREL16_HA:
5135 case R_PPC_GOT_DTPREL16:
5136 case R_PPC_GOT_DTPREL16_LO:
5137 case R_PPC_GOT_DTPREL16_HI:
5138 case R_PPC_GOT_DTPREL16_HA:
5139 case R_PPC_GOT16:
5140 case R_PPC_GOT16_LO:
5141 case R_PPC_GOT16_HI:
5142 case R_PPC_GOT16_HA:
5143 if (h != NULL)
ee05f2fe 5144 {
25dbc73a
AM
5145 if (h->got.refcount > 0)
5146 h->got.refcount--;
0e1862bb 5147 if (!bfd_link_pic (info))
91e21fb7
AM
5148 {
5149 struct plt_entry *ent;
5150
5151 ent = find_plt_ent (&h->plt.plist, NULL, 0);
32af9f6e 5152 if (ent != NULL && ent->plt.refcount > 0)
91e21fb7
AM
5153 ent->plt.refcount -= 1;
5154 }
ee05f2fe 5155 }
25dbc73a
AM
5156 else if (local_got_refcounts != NULL)
5157 {
5158 if (local_got_refcounts[r_symndx] > 0)
5159 local_got_refcounts[r_symndx]--;
5160 }
5161 break;
ee05f2fe 5162
25dbc73a
AM
5163 case R_PPC_REL24:
5164 case R_PPC_REL14:
5165 case R_PPC_REL14_BRTAKEN:
5166 case R_PPC_REL14_BRNTAKEN:
5167 case R_PPC_REL32:
3b36f7e6 5168 if (h == NULL || h == htab->elf.hgot)
25dbc73a 5169 break;
1a0670f3 5170 /* Fall through. */
ee05f2fe 5171
25dbc73a
AM
5172 case R_PPC_ADDR32:
5173 case R_PPC_ADDR24:
5174 case R_PPC_ADDR16:
5175 case R_PPC_ADDR16_LO:
5176 case R_PPC_ADDR16_HI:
5177 case R_PPC_ADDR16_HA:
5178 case R_PPC_ADDR14:
5179 case R_PPC_ADDR14_BRTAKEN:
5180 case R_PPC_ADDR14_BRNTAKEN:
5181 case R_PPC_UADDR32:
5182 case R_PPC_UADDR16:
0e1862bb 5183 if (bfd_link_pic (info))
87538722 5184 break;
1a0670f3 5185 /* Fall through. */
87538722 5186
25dbc73a
AM
5187 case R_PPC_PLT32:
5188 case R_PPC_PLTREL24:
87538722 5189 case R_PPC_PLTREL32:
25dbc73a
AM
5190 case R_PPC_PLT16_LO:
5191 case R_PPC_PLT16_HI:
5192 case R_PPC_PLT16_HA:
5193 if (h != NULL)
5194 {
a877a2b6
AM
5195 bfd_vma addend = 0;
5196 struct plt_entry *ent;
5197
0e1862bb 5198 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
a877a2b6
AM
5199 addend = rel->r_addend;
5200 ent = find_plt_ent (&h->plt.plist, got2, addend);
32af9f6e 5201 if (ent != NULL && ent->plt.refcount > 0)
a6aa5195 5202 ent->plt.refcount -= 1;
25dbc73a
AM
5203 }
5204 break;
ee05f2fe 5205
25dbc73a
AM
5206 default:
5207 break;
5208 }
7fce784e 5209 }
7fce784e
AS
5210 return TRUE;
5211}
25dbc73a 5212\f
3a71aa26
AM
5213/* Set plt output section type, htab->tls_get_addr, and call the
5214 generic ELF tls_setup function. */
7fce784e 5215
25dbc73a 5216asection *
5446cbdf 5217ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 5218{
25dbc73a 5219 struct ppc_elf_link_hash_table *htab;
7fce784e 5220
25dbc73a 5221 htab = ppc_elf_hash_table (info);
a7f2871e
AM
5222 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5223 FALSE, FALSE, TRUE);
f01f1741
AM
5224 if (htab->plt_type != PLT_NEW)
5225 htab->params->no_tls_get_addr_opt = TRUE;
5226
5446cbdf 5227 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM
5228 {
5229 struct elf_link_hash_entry *opt, *tga;
5230 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5231 FALSE, FALSE, TRUE);
5232 if (opt != NULL
5233 && (opt->root.type == bfd_link_hash_defined
5234 || opt->root.type == bfd_link_hash_defweak))
5235 {
5236 /* If glibc supports an optimized __tls_get_addr call stub,
5237 signalled by the presence of __tls_get_addr_opt, and we'll
5238 be calling __tls_get_addr via a plt call stub, then
5239 make __tls_get_addr point to __tls_get_addr_opt. */
5240 tga = htab->tls_get_addr;
5241 if (htab->elf.dynamic_sections_created
5242 && tga != NULL
5243 && (tga->type == STT_FUNC
5244 || tga->needs_plt)
5245 && !(SYMBOL_CALLS_LOCAL (info, tga)
5246 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5247 && tga->root.type == bfd_link_hash_undefweak)))
5248 {
5249 struct plt_entry *ent;
32af9f6e
AM
5250 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5251 if (ent->plt.refcount > 0)
5252 break;
5253 if (ent != NULL)
a7f2871e
AM
5254 {
5255 tga->root.type = bfd_link_hash_indirect;
5256 tga->root.u.i.link = &opt->root;
5257 ppc_elf_copy_indirect_symbol (info, opt, tga);
3bd43ebc 5258 opt->forced_local = 0;
a7f2871e
AM
5259 if (opt->dynindx != -1)
5260 {
5261 /* Use __tls_get_addr_opt in dynamic relocations. */
5262 opt->dynindx = -1;
5263 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5264 opt->dynstr_index);
5265 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5266 return FALSE;
5267 }
5268 htab->tls_get_addr = opt;
5269 }
5270 }
5271 }
5272 else
5446cbdf 5273 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 5274 }
4a3dc543 5275 if (htab->plt_type == PLT_NEW
d7128ce4
AM
5276 && htab->plt != NULL
5277 && htab->plt->output_section != NULL)
5278 {
5279 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5280 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5281 }
5282
25dbc73a 5283 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
5284}
5285
3a71aa26
AM
5286/* Return TRUE iff REL is a branch reloc with a global symbol matching
5287 HASH. */
5288
5289static bfd_boolean
5290branch_reloc_hash_match (const bfd *ibfd,
5291 const Elf_Internal_Rela *rel,
5292 const struct elf_link_hash_entry *hash)
5293{
5294 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5295 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5296 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5297
e054468f 5298 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
3a71aa26
AM
5299 {
5300 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5301 struct elf_link_hash_entry *h;
5302
5303 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5304 while (h->root.type == bfd_link_hash_indirect
5305 || h->root.type == bfd_link_hash_warning)
5306 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5307 if (h == hash)
5308 return TRUE;
5309 }
5310 return FALSE;
5311}
5312
25dbc73a
AM
5313/* Run through all the TLS relocs looking for optimization
5314 opportunities. */
252b5132 5315
25dbc73a
AM
5316bfd_boolean
5317ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5318 struct bfd_link_info *info)
252b5132 5319{
7fce784e 5320 bfd *ibfd;
25dbc73a
AM
5321 asection *sec;
5322 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 5323 int pass;
252b5132 5324
3cbc1e5e 5325 if (!bfd_link_executable (info))
25dbc73a 5326 return TRUE;
252b5132 5327
7619e7c7 5328 htab = ppc_elf_hash_table (info);
663a1470
AM
5329 if (htab == NULL)
5330 return FALSE;
5331
b7fcf6f6
AM
5332 /* Make two passes through the relocs. First time check that tls
5333 relocs involved in setting up a tls_get_addr call are indeed
663a1470
AM
5334 followed by such a call. If they are not, don't do any tls
5335 optimization. On the second pass twiddle tls_mask flags to
5336 notify relocate_section that optimization can be done, and
5337 adjust got and plt refcounts. */
b7fcf6f6 5338 for (pass = 0; pass < 2; ++pass)
c72f2fb2 5339 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
b7fcf6f6
AM
5340 {
5341 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 5342 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
32af9f6e 5343 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
7619e7c7 5344
b7fcf6f6
AM
5345 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5346 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5347 {
5348 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 5349 int expecting_tls_get_addr = 0;
252b5132 5350
b7fcf6f6
AM
5351 /* Read the relocations. */
5352 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5353 info->keep_memory);
5354 if (relstart == NULL)
5355 return FALSE;
7619e7c7 5356
b7fcf6f6
AM
5357 relend = relstart + sec->reloc_count;
5358 for (rel = relstart; rel < relend; rel++)
5359 {
5360 enum elf_ppc_reloc_type r_type;
5361 unsigned long r_symndx;
5362 struct elf_link_hash_entry *h = NULL;
5363 char *tls_mask;
5364 char tls_set, tls_clear;
5365 bfd_boolean is_local;
b7fcf6f6
AM
5366 bfd_signed_vma *got_count;
5367
5368 r_symndx = ELF32_R_SYM (rel->r_info);
5369 if (r_symndx >= symtab_hdr->sh_info)
5370 {
5371 struct elf_link_hash_entry **sym_hashes;
7fce784e 5372
b7fcf6f6
AM
5373 sym_hashes = elf_sym_hashes (ibfd);
5374 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5375 while (h->root.type == bfd_link_hash_indirect
5376 || h->root.type == bfd_link_hash_warning)
5377 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5378 }
7619e7c7 5379
b7fcf6f6
AM
5380 is_local = FALSE;
5381 if (h == NULL
5382 || !h->def_dynamic)
5383 is_local = TRUE;
7619e7c7 5384
b7fcf6f6 5385 r_type = ELF32_R_TYPE (rel->r_info);
663a1470
AM
5386 /* If this section has old-style __tls_get_addr calls
5387 without marker relocs, then check that each
5388 __tls_get_addr call reloc is preceded by a reloc
5389 that conceivably belongs to the __tls_get_addr arg
5390 setup insn. If we don't find matching arg setup
5391 relocs, don't do any tls optimization. */
5392 if (pass == 0
5393 && sec->has_tls_get_addr_call
5394 && h != NULL
5395 && h == htab->tls_get_addr
5396 && !expecting_tls_get_addr
5397 && is_branch_reloc (r_type))
5398 {
25f53a85 5399 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
663a1470
AM
5400 "TLS optimization disabled\n",
5401 ibfd, sec, rel->r_offset);
5402 if (elf_section_data (sec)->relocs != relstart)
5403 free (relstart);
5404 return TRUE;
5405 }
5406
5407 expecting_tls_get_addr = 0;
b7fcf6f6
AM
5408 switch (r_type)
5409 {
5410 case R_PPC_GOT_TLSLD16:
5411 case R_PPC_GOT_TLSLD16_LO:
5412 expecting_tls_get_addr = 1;
1a0670f3 5413 /* Fall through. */
b7fcf6f6
AM
5414
5415 case R_PPC_GOT_TLSLD16_HI:
5416 case R_PPC_GOT_TLSLD16_HA:
5417 /* These relocs should never be against a symbol
5418 defined in a shared lib. Leave them alone if
5419 that turns out to be the case. */
5420 if (!is_local)
5421 continue;
5422
5423 /* LD -> LE */
5424 tls_set = 0;
5425 tls_clear = TLS_LD;
5426 break;
5427
5428 case R_PPC_GOT_TLSGD16:
5429 case R_PPC_GOT_TLSGD16_LO:
5430 expecting_tls_get_addr = 1;
1a0670f3 5431 /* Fall through. */
b7fcf6f6
AM
5432
5433 case R_PPC_GOT_TLSGD16_HI:
5434 case R_PPC_GOT_TLSGD16_HA:
5435 if (is_local)
5436 /* GD -> LE */
5437 tls_set = 0;
5438 else
5439 /* GD -> IE */
5440 tls_set = TLS_TLS | TLS_TPRELGD;
5441 tls_clear = TLS_GD;
5442 break;
5443
5444 case R_PPC_GOT_TPREL16:
5445 case R_PPC_GOT_TPREL16_LO:
5446 case R_PPC_GOT_TPREL16_HI:
5447 case R_PPC_GOT_TPREL16_HA:
5448 if (is_local)
5449 {
5450 /* IE -> LE */
5451 tls_set = 0;
5452 tls_clear = TLS_TPREL;
5453 break;
5454 }
5455 else
5456 continue;
5457
32af9f6e
AM
5458 case R_PPC_TLSGD:
5459 case R_PPC_TLSLD:
5460 expecting_tls_get_addr = 2;
5461 tls_set = 0;
5462 tls_clear = 0;
5463 break;
5464
b7fcf6f6 5465 default:
25dbc73a 5466 continue;
b7fcf6f6 5467 }
25dbc73a 5468
b7fcf6f6
AM
5469 if (pass == 0)
5470 {
727fc41e 5471 if (!expecting_tls_get_addr
32af9f6e
AM
5472 || (expecting_tls_get_addr == 1
5473 && !sec->has_tls_get_addr_call))
b7fcf6f6 5474 continue;
25dbc73a 5475
3a71aa26
AM
5476 if (rel + 1 < relend
5477 && branch_reloc_hash_match (ibfd, rel + 1,
5478 htab->tls_get_addr))
5479 continue;
25dbc73a 5480
b7fcf6f6
AM
5481 /* Uh oh, we didn't find the expected call. We
5482 could just mark this symbol to exclude it
5483 from tls optimization but it's safer to skip
663a1470 5484 the entire optimization. */
25f53a85 5485 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM
5486 "TLS optimization disabled\n"),
5487 ibfd, sec, rel->r_offset);
5488 if (elf_section_data (sec)->relocs != relstart)
5489 free (relstart);
5490 return TRUE;
b7fcf6f6 5491 }
25dbc73a 5492
32af9f6e
AM
5493 if (expecting_tls_get_addr)
5494 {
5495 struct plt_entry *ent;
5496 bfd_vma addend = 0;
5497
0e1862bb 5498 if (bfd_link_pic (info)
32af9f6e
AM
5499 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5500 addend = rel[1].r_addend;
5501 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5502 got2, addend);
5503 if (ent != NULL && ent->plt.refcount > 0)
5504 ent->plt.refcount -= 1;
5505
5506 if (expecting_tls_get_addr == 2)
5507 continue;
5508 }
5509
b7fcf6f6
AM
5510 if (h != NULL)
5511 {
5512 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5513 got_count = &h->got.refcount;
5514 }
5515 else
5516 {
b7fcf6f6 5517 bfd_signed_vma *lgot_refs;
e054468f 5518 struct plt_entry **local_plt;
b7fcf6f6 5519 char *lgot_masks;
25dbc73a 5520
b7fcf6f6
AM
5521 if (locsyms == NULL)
5522 {
5523 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5524 if (locsyms == NULL)
5525 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5526 symtab_hdr->sh_info,
5527 0, NULL, NULL, NULL);
5528 if (locsyms == NULL)
5529 {
5530 if (elf_section_data (sec)->relocs != relstart)
5531 free (relstart);
5532 return FALSE;
5533 }
5534 }
b7fcf6f6
AM
5535 lgot_refs = elf_local_got_refcounts (ibfd);
5536 if (lgot_refs == NULL)
5537 abort ();
e054468f
AM
5538 local_plt = (struct plt_entry **)
5539 (lgot_refs + symtab_hdr->sh_info);
5540 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
b7fcf6f6
AM
5541 tls_mask = &lgot_masks[r_symndx];
5542 got_count = &lgot_refs[r_symndx];
5543 }
25dbc73a 5544
b7fcf6f6
AM
5545 if (tls_set == 0)
5546 {
5547 /* We managed to get rid of a got entry. */
5548 if (*got_count > 0)
5549 *got_count -= 1;
5550 }
25dbc73a 5551
b7fcf6f6
AM
5552 *tls_mask |= tls_set;
5553 *tls_mask &= ~tls_clear;
5554 }
25dbc73a 5555
b7fcf6f6
AM
5556 if (elf_section_data (sec)->relocs != relstart)
5557 free (relstart);
5558 }
5559
5560 if (locsyms != NULL
5561 && (symtab_hdr->contents != (unsigned char *) locsyms))
5562 {
5563 if (!info->keep_memory)
5564 free (locsyms);
5565 else
5566 symtab_hdr->contents = (unsigned char *) locsyms;
5567 }
5568 }
25dbc73a
AM
5569 return TRUE;
5570}
5571\f
625af618
AM
5572/* Return true if we have dynamic relocs that apply to read-only sections. */
5573
5574static bfd_boolean
5575readonly_dynrelocs (struct elf_link_hash_entry *h)
5576{
6061a67d 5577 struct elf_dyn_relocs *p;
625af618
AM
5578
5579 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5580 {
5581 asection *s = p->sec->output_section;
5582
5583 if (s != NULL
5584 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5585 == (SEC_READONLY | SEC_ALLOC)))
5586 return TRUE;
5587 }
5588 return FALSE;
5589}
5590
25dbc73a
AM
5591/* Adjust a symbol defined by a dynamic object and referenced by a
5592 regular object. The current definition is in some section of the
5593 dynamic object, but we're not including those sections. We have to
5594 change the definition to something the rest of the link can
5595 understand. */
7fce784e 5596
25dbc73a
AM
5597static bfd_boolean
5598ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5599 struct elf_link_hash_entry *h)
5600{
5601 struct ppc_elf_link_hash_table *htab;
5602 asection *s;
7fce784e 5603
25dbc73a
AM
5604#ifdef DEBUG
5605 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5606 h->root.root.string);
5607#endif
252b5132 5608
25dbc73a
AM
5609 /* Make sure we know what is going on here. */
5610 htab = ppc_elf_hash_table (info);
5611 BFD_ASSERT (htab->elf.dynobj != NULL
5612 && (h->needs_plt
91e21fb7 5613 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5614 || h->u.weakdef != NULL
5615 || (h->def_dynamic
5616 && h->ref_regular
5617 && !h->def_regular)));
252b5132 5618
25dbc73a
AM
5619 /* Deal with function syms. */
5620 if (h->type == STT_FUNC
e054468f 5621 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5622 || h->needs_plt)
5623 {
5624 /* Clear procedure linkage table information for any symbol that
5625 won't need a .plt entry. */
a6aa5195
AM
5626 struct plt_entry *ent;
5627 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5628 if (ent->plt.refcount > 0)
5629 break;
5630 if (ent == NULL
e054468f
AM
5631 || (h->type != STT_GNU_IFUNC
5632 && (SYMBOL_CALLS_LOCAL (info, h)
5633 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5634 && h->root.type == bfd_link_hash_undefweak))))
252b5132 5635 {
25dbc73a 5636 /* A PLT entry is not required/allowed when:
252b5132 5637
25dbc73a
AM
5638 1. We are not using ld.so; because then the PLT entry
5639 can't be set up, so we can't use one. In this case,
5640 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 5641
25dbc73a
AM
5642 2. GC has rendered the entry unused.
5643
5644 3. We know for certain that a call to this symbol
5645 will go to this object, or will remain undefined. */
a6aa5195 5646 h->plt.plist = NULL;
25dbc73a 5647 h->needs_plt = 0;
d1eca1e4 5648 h->pointer_equality_needed = 0;
25dbc73a 5649 }
625af618
AM
5650 else
5651 {
d1eca1e4
AM
5652 /* Taking a function's address in a read/write section
5653 doesn't require us to define the function symbol in the
1009ef28 5654 executable on a plt call stub. A dynamic reloc can
d1eca1e4
AM
5655 be used instead. */
5656 if (h->pointer_equality_needed
1009ef28
AM
5657 && h->type != STT_GNU_IFUNC
5658 && !htab->is_vxworks
5659 && !ppc_elf_hash_entry (h)->has_sda_refs
d1eca1e4
AM
5660 && !readonly_dynrelocs (h))
5661 {
5662 h->pointer_equality_needed = 0;
5663 h->non_got_ref = 0;
5664 }
5665
25f23106
AM
5666 /* After adjust_dynamic_symbol, non_got_ref set in the
5667 non-shared case means that we have allocated space in
5668 .dynbss for the symbol and thus dyn_relocs for this
5669 symbol should be discarded.
625af618
AM
5670 If we get here we know we are making a PLT entry for this
5671 symbol, and in an executable we'd normally resolve
5672 relocations against this symbol to the PLT entry. Allow
5673 dynamic relocs if the reference is weak, and the dynamic
5674 relocs will not cause text relocation. */
d1eca1e4
AM
5675 else if (!h->ref_regular_nonweak
5676 && h->non_got_ref
5677 && h->type != STT_GNU_IFUNC
5678 && !htab->is_vxworks
5679 && !ppc_elf_hash_entry (h)->has_sda_refs
5680 && !readonly_dynrelocs (h))
625af618
AM
5681 h->non_got_ref = 0;
5682 }
d3e454b9 5683 h->protected_def = 0;
25dbc73a 5684 return TRUE;
252b5132 5685 }
25dbc73a 5686 else
a6aa5195 5687 h->plt.plist = NULL;
252b5132 5688
25dbc73a
AM
5689 /* If this is a weak symbol, and there is a real definition, the
5690 processor independent code will have arranged for us to see the
5691 real definition first, and we can just use the same value. */
5692 if (h->u.weakdef != NULL)
252b5132 5693 {
25dbc73a
AM
5694 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5695 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5696 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5697 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5698 if (ELIMINATE_COPY_RELOCS)
5699 h->non_got_ref = h->u.weakdef->non_got_ref;
5700 return TRUE;
5701 }
dc810e39 5702
25dbc73a
AM
5703 /* This is a reference to a symbol defined by a dynamic object which
5704 is not a function. */
252b5132 5705
25dbc73a
AM
5706 /* If we are creating a shared library, we must presume that the
5707 only references to the symbol are via the global offset table.
5708 For such cases we need not do anything here; the relocations will
5709 be handled correctly by relocate_section. */
0e1862bb 5710 if (bfd_link_pic (info))
d3e454b9
AM
5711 {
5712 h->protected_def = 0;
5713 return TRUE;
5714 }
252b5132 5715
25dbc73a
AM
5716 /* If there are no references to this symbol that do not use the
5717 GOT, we don't need to generate a copy reloc. */
5718 if (!h->non_got_ref)
d3e454b9
AM
5719 {
5720 h->protected_def = 0;
5721 return TRUE;
5722 }
5723
5724 /* Protected variables do not work with .dynbss. The copy in
5725 .dynbss won't be used by the shared library with the protected
5726 definition for the variable. Editing to PIC, or text relocations
5727 are preferable to an incorrect program. */
5728 if (h->protected_def)
5729 {
5730 if (ELIMINATE_COPY_RELOCS
5731 && ppc_elf_hash_entry (h)->has_addr16_ha
5732 && ppc_elf_hash_entry (h)->has_addr16_lo
5733 && htab->params->pic_fixup == 0
5734 && info->disable_target_specific_optimizations <= 1)
5735 htab->params->pic_fixup = 1;
5736 h->non_got_ref = 0;
5737 return TRUE;
5738 }
25dbc73a 5739
a127494f
AM
5740 /* If -z nocopyreloc was given, we won't generate them either. */
5741 if (info->nocopyreloc)
5742 {
5743 h->non_got_ref = 0;
5744 return TRUE;
5745 }
5746
cfd2c773
NS
5747 /* If we didn't find any dynamic relocs in read-only sections, then
5748 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5749 We can't do this if there are any small data relocations. This
5750 doesn't work on VxWorks, where we can not have dynamic
5751 relocations (other than copy and jump slot relocations) in an
5752 executable. */
4dc4a9a5 5753 if (ELIMINATE_COPY_RELOCS
cfd2c773 5754 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
5755 && !htab->is_vxworks
5756 && !h->def_regular
5757 && !readonly_dynrelocs (h))
25dbc73a 5758 {
625af618
AM
5759 h->non_got_ref = 0;
5760 return TRUE;
252b5132
RH
5761 }
5762
25dbc73a
AM
5763 /* We must allocate the symbol in our .dynbss section, which will
5764 become part of the .bss section of the executable. There will be
5765 an entry for this symbol in the .dynsym section. The dynamic
5766 object will contain position independent code, so all references
5767 from the dynamic object to this symbol will go through the global
5768 offset table. The dynamic linker will use the .dynsym entry to
5769 determine the address it must put in the global offset table, so
5770 both the dynamic object and the regular object will refer to the
5771 same memory location for the variable.
5772
4dc4a9a5
DJ
5773 Of course, if the symbol is referenced using SDAREL relocs, we
5774 must instead allocate it in .sbss. */
25dbc73a 5775
4dc4a9a5 5776 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
5777 s = htab->dynsbss;
5778 else
5779 s = htab->dynbss;
5780 BFD_ASSERT (s != NULL);
5781
5782 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5783 copy the initial value out of the dynamic object and into the
5784 runtime process image. We need to remember the offset into the
5785 .rela.bss section we are going to use. */
1d7e9d18 5786 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
25dbc73a
AM
5787 {
5788 asection *srel;
5789
4dc4a9a5 5790 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
5791 srel = htab->relsbss;
5792 else
5793 srel = htab->relbss;
5794 BFD_ASSERT (srel != NULL);
5795 srel->size += sizeof (Elf32_External_Rela);
5796 h->needs_copy = 1;
5797 }
7619e7c7 5798
6cabe1ea 5799 return _bfd_elf_adjust_dynamic_copy (info, h, s);
25dbc73a
AM
5800}
5801\f
ac39eb42
AM
5802/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5803 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5804 specifying the addend on the plt relocation. For -fpic code, the sym
5805 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5806 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
5807
5808static bfd_boolean
5809add_stub_sym (struct plt_entry *ent,
5810 struct elf_link_hash_entry *h,
ac39eb42 5811 struct bfd_link_info *info)
0ba07910
AM
5812{
5813 struct elf_link_hash_entry *sh;
5814 size_t len1, len2, len3;
5815 char *name;
ac39eb42
AM
5816 const char *stub;
5817 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5818
0e1862bb 5819 if (bfd_link_pic (info))
ac39eb42
AM
5820 stub = ".plt_pic32.";
5821 else
5822 stub = ".plt_call32.";
0ba07910
AM
5823
5824 len1 = strlen (h->root.root.string);
ac39eb42 5825 len2 = strlen (stub);
0ba07910
AM
5826 len3 = 0;
5827 if (ent->sec)
5828 len3 = strlen (ent->sec->name);
ac39eb42 5829 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
5830 if (name == NULL)
5831 return FALSE;
5832 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5833 if (ent->sec)
5834 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
5835 memcpy (name + 8 + len3, stub, len2);
5836 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
5837 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5838 if (sh == NULL)
5839 return FALSE;
5840 if (sh->root.type == bfd_link_hash_new)
5841 {
5842 sh->root.type = bfd_link_hash_defined;
5843 sh->root.u.def.section = htab->glink;
5844 sh->root.u.def.value = ent->glink_offset;
5845 sh->ref_regular = 1;
5846 sh->def_regular = 1;
5847 sh->ref_regular_nonweak = 1;
5848 sh->forced_local = 1;
5849 sh->non_elf = 0;
2ec55de3 5850 sh->root.linker_def = 1;
0ba07910
AM
5851 }
5852 return TRUE;
5853}
5854
3b36f7e6
AM
5855/* Allocate NEED contiguous space in .got, and return the offset.
5856 Handles allocation of the got header when crossing 32k. */
5857
5858static bfd_vma
5859allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5860{
5861 bfd_vma where;
4a3dc543 5862 unsigned int max_before_header;
3b36f7e6 5863
4a3dc543 5864 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
5865 {
5866 where = htab->got->size;
5867 htab->got->size += need;
5868 }
3b36f7e6
AM
5869 else
5870 {
4a3dc543
RS
5871 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5872 if (need <= htab->got_gap)
3b36f7e6 5873 {
4a3dc543
RS
5874 where = max_before_header - htab->got_gap;
5875 htab->got_gap -= need;
5876 }
5877 else
5878 {
5879 if (htab->got->size + need > max_before_header
5880 && htab->got->size <= max_before_header)
5881 {
5882 htab->got_gap = max_before_header - htab->got->size;
5883 htab->got->size = max_before_header + htab->got_header_size;
5884 }
5885 where = htab->got->size;
5886 htab->got->size += need;
3b36f7e6 5887 }
3b36f7e6
AM
5888 }
5889 return where;
5890}
5891
25dbc73a 5892/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 5893
b34976b6 5894static bfd_boolean
25dbc73a 5895allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 5896{
25dbc73a
AM
5897 struct bfd_link_info *info = inf;
5898 struct ppc_elf_link_hash_entry *eh;
7619e7c7 5899 struct ppc_elf_link_hash_table *htab;
6061a67d 5900 struct elf_dyn_relocs *p;
252b5132 5901
25dbc73a 5902 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5903 return TRUE;
252b5132 5904
7619e7c7 5905 htab = ppc_elf_hash_table (info);
e054468f
AM
5906 if (htab->elf.dynamic_sections_created
5907 || h->type == STT_GNU_IFUNC)
252b5132 5908 {
a6aa5195
AM
5909 struct plt_entry *ent;
5910 bfd_boolean doneone = FALSE;
28e99bb6 5911 bfd_vma plt_offset = 0, glink_offset = 0;
e054468f 5912 bfd_boolean dyn;
28e99bb6 5913
a6aa5195
AM
5914 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5915 if (ent->plt.refcount > 0)
5916 {
5917 /* Make sure this symbol is output as a dynamic symbol. */
5918 if (h->dynindx == -1
e054468f
AM
5919 && !h->forced_local
5920 && !h->def_regular
5921 && htab->elf.dynamic_sections_created)
a6aa5195
AM
5922 {
5923 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5924 return FALSE;
5925 }
252b5132 5926
e054468f 5927 dyn = htab->elf.dynamic_sections_created;
0e1862bb 5928 if (bfd_link_pic (info)
e054468f
AM
5929 || h->type == STT_GNU_IFUNC
5930 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
a6aa5195
AM
5931 {
5932 asection *s = htab->plt;
25f23106 5933 if (!dyn || h->dynindx == -1)
e054468f 5934 s = htab->iplt;
7619e7c7 5935
25f23106 5936 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
a6aa5195 5937 {
a6aa5195 5938 if (!doneone)
28e99bb6
AM
5939 {
5940 plt_offset = s->size;
5941 s->size += 4;
5942 }
5943 ent->plt.offset = plt_offset;
d7128ce4 5944
a6aa5195 5945 s = htab->glink;
0e1862bb 5946 if (!doneone || bfd_link_pic (info))
28e99bb6
AM
5947 {
5948 glink_offset = s->size;
5949 s->size += GLINK_ENTRY_SIZE;
a7f2871e 5950 if (h == htab->tls_get_addr
5446cbdf 5951 && !htab->params->no_tls_get_addr_opt)
a7f2871e 5952 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
28e99bb6
AM
5953 }
5954 if (!doneone
0e1862bb 5955 && !bfd_link_pic (info)
625af618 5956 && h->def_dynamic
a6aa5195
AM
5957 && !h->def_regular)
5958 {
5959 h->root.u.def.section = s;
28e99bb6 5960 h->root.u.def.value = glink_offset;
a6aa5195 5961 }
28e99bb6 5962 ent->glink_offset = glink_offset;
0ba07910 5963
5446cbdf 5964 if (htab->params->emit_stub_syms
ac39eb42 5965 && !add_stub_sym (ent, h, info))
0ba07910 5966 return FALSE;
a6aa5195
AM
5967 }
5968 else
5969 {
a6aa5195
AM
5970 if (!doneone)
5971 {
28e99bb6
AM
5972 /* If this is the first .plt entry, make room
5973 for the special first entry. */
5974 if (s->size == 0)
9d8504b1 5975 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
5976
5977 /* The PowerPC PLT is actually composed of two
5978 parts, the first part is 2 words (for a load
5979 and a jump), and then there is a remaining
5980 word available at the end. */
9d8504b1
PB
5981 plt_offset = (htab->plt_initial_entry_size
5982 + (htab->plt_slot_size
5983 * ((s->size
5984 - htab->plt_initial_entry_size)
5985 / htab->plt_entry_size)));
28e99bb6
AM
5986
5987 /* If this symbol is not defined in a regular
5988 file, and we are not generating a shared
5b914448 5989 library, then set the symbol to this location
de972ffa
AM
5990 in the .plt. This is to avoid text
5991 relocations, and is required to make
28e99bb6
AM
5992 function pointers compare as equal between
5993 the normal executable and the shared library. */
0e1862bb 5994 if (! bfd_link_pic (info)
625af618 5995 && h->def_dynamic
28e99bb6
AM
5996 && !h->def_regular)
5997 {
5998 h->root.u.def.section = s;
5999 h->root.u.def.value = plt_offset;
6000 }
6001
9d8504b1
PB
6002 /* Make room for this entry. */
6003 s->size += htab->plt_entry_size;
6004 /* After the 8192nd entry, room for two entries
6005 is allocated. */
4a3dc543 6006 if (htab->plt_type == PLT_OLD
9d8504b1
PB
6007 && (s->size - htab->plt_initial_entry_size)
6008 / htab->plt_entry_size
6009 > PLT_NUM_SINGLE_ENTRIES)
6010 s->size += htab->plt_entry_size;
a6aa5195 6011 }
28e99bb6 6012 ent->plt.offset = plt_offset;
a6aa5195 6013 }
25dbc73a 6014
a6aa5195
AM
6015 /* We also need to make an entry in the .rela.plt section. */
6016 if (!doneone)
6017 {
25f23106
AM
6018 if (!htab->elf.dynamic_sections_created
6019 || h->dynindx == -1)
e054468f
AM
6020 htab->reliplt->size += sizeof (Elf32_External_Rela);
6021 else
9d8504b1 6022 {
e054468f
AM
6023 htab->relplt->size += sizeof (Elf32_External_Rela);
6024
6025 if (htab->plt_type == PLT_VXWORKS)
9d8504b1 6026 {
e054468f 6027 /* Allocate space for the unloaded relocations. */
0e1862bb 6028 if (!bfd_link_pic (info)
e054468f 6029 && htab->elf.dynamic_sections_created)
9d8504b1 6030 {
e054468f
AM
6031 if (ent->plt.offset
6032 == (bfd_vma) htab->plt_initial_entry_size)
6033 {
6034 htab->srelplt2->size
6035 += (sizeof (Elf32_External_Rela)
6036 * VXWORKS_PLTRESOLVE_RELOCS);
6037 }
6038
9d8504b1 6039 htab->srelplt2->size
e054468f
AM
6040 += (sizeof (Elf32_External_Rela)
6041 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
9d8504b1
PB
6042 }
6043
e054468f
AM
6044 /* Every PLT entry has an associated GOT entry in
6045 .got.plt. */
6046 htab->sgotplt->size += 4;
9d8504b1 6047 }
9d8504b1 6048 }
a6aa5195
AM
6049 doneone = TRUE;
6050 }
6051 }
6052 else
6053 ent->plt.offset = (bfd_vma) -1;
a6aa5195 6054 }
2ce859a1
AM
6055 else
6056 ent->plt.offset = (bfd_vma) -1;
6057
6058 if (!doneone)
6059 {
6060 h->plt.plist = NULL;
6061 h->needs_plt = 0;
6062 }
25dbc73a
AM
6063 }
6064 else
6065 {
a6aa5195 6066 h->plt.plist = NULL;
25dbc73a
AM
6067 h->needs_plt = 0;
6068 }
6069
6070 eh = (struct ppc_elf_link_hash_entry *) h;
d3e454b9
AM
6071 if (eh->elf.got.refcount > 0
6072 || (ELIMINATE_COPY_RELOCS
6073 && !eh->elf.def_regular
6074 && eh->elf.protected_def
6075 && eh->has_addr16_ha
6076 && eh->has_addr16_lo
6077 && htab->params->pic_fixup > 0))
25dbc73a 6078 {
d6e14abc
AM
6079 bfd_boolean dyn;
6080 unsigned int need;
6081
25dbc73a
AM
6082 /* Make sure this symbol is output as a dynamic symbol. */
6083 if (eh->elf.dynindx == -1
b099ab9f 6084 && !eh->elf.forced_local
25f23106 6085 && eh->elf.type != STT_GNU_IFUNC
b099ab9f 6086 && htab->elf.dynamic_sections_created)
25dbc73a
AM
6087 {
6088 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 6089 return FALSE;
25dbc73a 6090 }
252b5132 6091
d6e14abc
AM
6092 need = 0;
6093 if ((eh->tls_mask & TLS_TLS) != 0)
25dbc73a 6094 {
d6e14abc 6095 if ((eh->tls_mask & TLS_LD) != 0)
252b5132 6096 {
d6e14abc
AM
6097 if (!eh->elf.def_dynamic)
6098 /* We'll just use htab->tlsld_got.offset. This should
6099 always be the case. It's a little odd if we have
6100 a local dynamic reloc against a non-local symbol. */
6101 htab->tlsld_got.refcount += 1;
6102 else
3b36f7e6 6103 need += 8;
252b5132 6104 }
d6e14abc
AM
6105 if ((eh->tls_mask & TLS_GD) != 0)
6106 need += 8;
6107 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6108 need += 4;
6109 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 6110 need += 4;
d6e14abc
AM
6111 }
6112 else
6113 need += 4;
6114 if (need == 0)
6115 eh->elf.got.offset = (bfd_vma) -1;
6116 else
6117 {
3b36f7e6 6118 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a 6119 dyn = htab->elf.dynamic_sections_created;
0e1862bb 6120 if ((bfd_link_pic (info)
25dbc73a
AM
6121 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6122 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6123 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 6124 {
91e21fb7 6125 asection *rsec = htab->relgot;
0bed072f
AM
6126
6127 if (eh->elf.type == STT_GNU_IFUNC)
6128 rsec = htab->reliplt;
3b36f7e6
AM
6129 /* All the entries we allocated need relocs.
6130 Except LD only needs one. */
d6e14abc
AM
6131 if ((eh->tls_mask & TLS_LD) != 0
6132 && eh->elf.def_dynamic)
3b36f7e6 6133 need -= 4;
25f23106 6134 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 6135 }
25dbc73a
AM
6136 }
6137 }
6138 else
6139 eh->elf.got.offset = (bfd_vma) -1;
252b5132 6140
b099ab9f 6141 if (eh->dyn_relocs == NULL
de972ffa 6142 || !htab->elf.dynamic_sections_created)
25dbc73a 6143 return TRUE;
252b5132 6144
25dbc73a
AM
6145 /* In the shared -Bsymbolic case, discard space allocated for
6146 dynamic pc-relative relocs against symbols which turn out to be
6147 defined in regular objects. For the normal shared case, discard
6148 space for relocs that have become local due to symbol visibility
6149 changes. */
6150
0e1862bb 6151 if (bfd_link_pic (info))
25dbc73a
AM
6152 {
6153 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 6154 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
6155 generated via assembly. We want calls to protected symbols to
6156 resolve directly to the function rather than going via the plt.
6157 If people want function pointer comparisons to work as expected
6158 then they should avoid writing weird assembly. */
6159 if (SYMBOL_CALLS_LOCAL (info, h))
6160 {
6061a67d 6161 struct elf_dyn_relocs **pp;
25dbc73a
AM
6162
6163 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 6164 {
25dbc73a
AM
6165 p->count -= p->pc_count;
6166 p->pc_count = 0;
6167 if (p->count == 0)
6168 *pp = p->next;
6169 else
6170 pp = &p->next;
252b5132 6171 }
25dbc73a 6172 }
252b5132 6173
3348747a
NS
6174 if (htab->is_vxworks)
6175 {
6061a67d 6176 struct elf_dyn_relocs **pp;
3348747a
NS
6177
6178 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6179 {
6180 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6181 *pp = p->next;
6182 else
6183 pp = &p->next;
6184 }
6185 }
6186
89200bf8
AM
6187 /* Discard relocs on undefined symbols that must be local. */
6188 if (eh->dyn_relocs != NULL
6189 && h->root.type == bfd_link_hash_undefined
6190 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6191 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6192 eh->dyn_relocs = NULL;
6193
25dbc73a
AM
6194 /* Also discard relocs on undefined weak syms with non-default
6195 visibility. */
cab87ef9
AM
6196 if (eh->dyn_relocs != NULL
6197 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 6198 {
dfbb6ac9
AM
6199 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6200 eh->dyn_relocs = NULL;
6201
6202 /* Make sure undefined weak symbols are output as a dynamic
6203 symbol in PIEs. */
6204 else if (h->dynindx == -1
e054468f
AM
6205 && !h->forced_local
6206 && !h->def_regular)
dfbb6ac9
AM
6207 {
6208 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6209 return FALSE;
6210 }
25dbc73a
AM
6211 }
6212 }
6213 else if (ELIMINATE_COPY_RELOCS)
6214 {
6215 /* For the non-shared case, discard space for relocs against
6216 symbols which turn out to need copy relocs or are not
6217 dynamic. */
7619e7c7 6218
25dbc73a 6219 if (!h->non_got_ref
d3e454b9
AM
6220 && !h->def_regular
6221 && !(h->protected_def
6222 && eh->has_addr16_ha
6223 && eh->has_addr16_lo
6224 && htab->params->pic_fixup > 0))
25dbc73a
AM
6225 {
6226 /* Make sure this symbol is output as a dynamic symbol.
6227 Undefined weak syms won't yet be marked as dynamic. */
6228 if (h->dynindx == -1
25f23106 6229 && !h->forced_local)
25dbc73a
AM
6230 {
6231 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6232 return FALSE;
6233 }
7619e7c7 6234
25dbc73a
AM
6235 /* If that succeeded, we know we'll be keeping all the
6236 relocs. */
6237 if (h->dynindx != -1)
6238 goto keep;
6239 }
252b5132 6240
25dbc73a 6241 eh->dyn_relocs = NULL;
252b5132 6242
25dbc73a
AM
6243 keep: ;
6244 }
252b5132 6245
25dbc73a
AM
6246 /* Finally, allocate space. */
6247 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6248 {
6249 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6250 if (eh->elf.type == STT_GNU_IFUNC)
25f23106 6251 sreloc = htab->reliplt;
25dbc73a
AM
6252 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6253 }
252b5132 6254
25dbc73a
AM
6255 return TRUE;
6256}
7619e7c7 6257
625af618
AM
6258/* Set DF_TEXTREL if we find any dynamic relocs that apply to
6259 read-only sections. */
7619e7c7 6260
25dbc73a 6261static bfd_boolean
625af618 6262maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 6263{
25dbc73a
AM
6264 if (h->root.type == bfd_link_hash_indirect)
6265 return TRUE;
252b5132 6266
625af618 6267 if (readonly_dynrelocs (h))
25dbc73a 6268 {
625af618 6269 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 6270
625af618
AM
6271 /* Not an error, just cut short the traversal. */
6272 return FALSE;
25dbc73a
AM
6273 }
6274 return TRUE;
6275}
6276
6177242a
AM
6277static const unsigned char glink_eh_frame_cie[] =
6278{
6279 0, 0, 0, 16, /* length. */
6280 0, 0, 0, 0, /* id. */
6281 1, /* CIE version. */
6282 'z', 'R', 0, /* Augmentation string. */
6283 4, /* Code alignment. */
6284 0x7c, /* Data alignment. */
6285 65, /* RA reg. */
6286 1, /* Augmentation size. */
6287 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6288 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6289};
6290
25dbc73a
AM
6291/* Set the sizes of the dynamic sections. */
6292
6293static bfd_boolean
93d1b056 6294ppc_elf_size_dynamic_sections (bfd *output_bfd,
25dbc73a
AM
6295 struct bfd_link_info *info)
6296{
6297 struct ppc_elf_link_hash_table *htab;
6298 asection *s;
6299 bfd_boolean relocs;
6300 bfd *ibfd;
7fce784e 6301
252b5132 6302#ifdef DEBUG
25dbc73a 6303 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 6304#endif
252b5132 6305
25dbc73a
AM
6306 htab = ppc_elf_hash_table (info);
6307 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 6308
25dbc73a
AM
6309 if (elf_hash_table (info)->dynamic_sections_created)
6310 {
6311 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 6312 if (bfd_link_executable (info) && !info->nointerp)
25dbc73a 6313 {
3d4d4302 6314 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
25dbc73a
AM
6315 BFD_ASSERT (s != NULL);
6316 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6317 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6318 }
6319 }
252b5132 6320
4a3dc543 6321 if (htab->plt_type == PLT_OLD)
d7128ce4 6322 htab->got_header_size = 16;
4a3dc543 6323 else if (htab->plt_type == PLT_NEW)
d7128ce4 6324 htab->got_header_size = 12;
252b5132 6325
25dbc73a
AM
6326 /* Set up .got offsets for local syms, and space for local dynamic
6327 relocs. */
c72f2fb2 6328 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
25dbc73a
AM
6329 {
6330 bfd_signed_vma *local_got;
6331 bfd_signed_vma *end_local_got;
e054468f
AM
6332 struct plt_entry **local_plt;
6333 struct plt_entry **end_local_plt;
25dbc73a
AM
6334 char *lgot_masks;
6335 bfd_size_type locsymcount;
6336 Elf_Internal_Shdr *symtab_hdr;
7fce784e 6337
0c8d6e5c 6338 if (!is_ppc_elf (ibfd))
25dbc73a 6339 continue;
7fce784e 6340
25dbc73a
AM
6341 for (s = ibfd->sections; s != NULL; s = s->next)
6342 {
f95f8542 6343 struct ppc_dyn_relocs *p;
252b5132 6344
f95f8542 6345 for (p = ((struct ppc_dyn_relocs *)
25dbc73a
AM
6346 elf_section_data (s)->local_dynrel);
6347 p != NULL;
6348 p = p->next)
6349 {
6350 if (!bfd_is_abs_section (p->sec)
6351 && bfd_is_abs_section (p->sec->output_section))
6352 {
6353 /* Input section has been discarded, either because
6354 it is a copy of a linkonce section or due to
6355 linker script /DISCARD/, so we'll be discarding
6356 the relocs too. */
7fce784e 6357 }
3348747a
NS
6358 else if (htab->is_vxworks
6359 && strcmp (p->sec->output_section->name,
6360 ".tls_vars") == 0)
6361 {
6362 /* Relocations in vxworks .tls_vars sections are
6363 handled specially by the loader. */
6364 }
25dbc73a 6365 else if (p->count != 0)
7fce784e 6366 {
25f23106 6367 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6368 if (p->ifunc)
25f23106
AM
6369 sreloc = htab->reliplt;
6370 sreloc->size += p->count * sizeof (Elf32_External_Rela);
25dbc73a
AM
6371 if ((p->sec->output_section->flags
6372 & (SEC_READONLY | SEC_ALLOC))
6373 == (SEC_READONLY | SEC_ALLOC))
6374 info->flags |= DF_TEXTREL;
7fce784e 6375 }
252b5132 6376 }
252b5132 6377 }
252b5132 6378
25dbc73a
AM
6379 local_got = elf_local_got_refcounts (ibfd);
6380 if (!local_got)
6381 continue;
252b5132 6382
0ffa91dd 6383 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
6384 locsymcount = symtab_hdr->sh_info;
6385 end_local_got = local_got + locsymcount;
e054468f
AM
6386 local_plt = (struct plt_entry **) end_local_got;
6387 end_local_plt = local_plt + locsymcount;
6388 lgot_masks = (char *) end_local_plt;
91d6fa6a 6389
25dbc73a
AM
6390 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6391 if (*local_got > 0)
6392 {
d6e14abc
AM
6393 unsigned int need = 0;
6394 if ((*lgot_masks & TLS_TLS) != 0)
25dbc73a 6395 {
d6e14abc
AM
6396 if ((*lgot_masks & TLS_GD) != 0)
6397 need += 8;
6398 if ((*lgot_masks & TLS_LD) != 0)
6399 htab->tlsld_got.refcount += 1;
6400 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6401 need += 4;
6402 if ((*lgot_masks & TLS_DTPREL) != 0)
6403 need += 4;
25dbc73a 6404 }
d6e14abc
AM
6405 else
6406 need += 4;
6407 if (need == 0)
6408 *local_got = (bfd_vma) -1;
25dbc73a
AM
6409 else
6410 {
3b36f7e6 6411 *local_got = allocate_got (htab, need);
0e1862bb 6412 if (bfd_link_pic (info))
0bed072f
AM
6413 {
6414 asection *srel = htab->relgot;
6415 if ((*lgot_masks & PLT_IFUNC) != 0)
6416 srel = htab->reliplt;
6417 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6418 }
25dbc73a
AM
6419 }
6420 }
6421 else
6422 *local_got = (bfd_vma) -1;
e054468f
AM
6423
6424 if (htab->is_vxworks)
6425 continue;
6426
6427 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6428 for (; local_plt < end_local_plt; ++local_plt)
6429 {
6430 struct plt_entry *ent;
6431 bfd_boolean doneone = FALSE;
6432 bfd_vma plt_offset = 0, glink_offset = 0;
6433
6434 for (ent = *local_plt; ent != NULL; ent = ent->next)
6435 if (ent->plt.refcount > 0)
6436 {
91d6fa6a 6437 s = htab->iplt;
e054468f
AM
6438
6439 if (!doneone)
6440 {
6441 plt_offset = s->size;
6442 s->size += 4;
6443 }
6444 ent->plt.offset = plt_offset;
6445
6446 s = htab->glink;
0e1862bb 6447 if (!doneone || bfd_link_pic (info))
e054468f
AM
6448 {
6449 glink_offset = s->size;
6450 s->size += GLINK_ENTRY_SIZE;
6451 }
6452 ent->glink_offset = glink_offset;
6453
6454 if (!doneone)
6455 {
25f23106 6456 htab->reliplt->size += sizeof (Elf32_External_Rela);
e054468f
AM
6457 doneone = TRUE;
6458 }
6459 }
6460 else
6461 ent->plt.offset = (bfd_vma) -1;
6462 }
25dbc73a 6463 }
252b5132 6464
b7fcf6f6
AM
6465 /* Allocate space for global sym dynamic relocs. */
6466 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6467
3b36f7e6
AM
6468 if (htab->tlsld_got.refcount > 0)
6469 {
6470 htab->tlsld_got.offset = allocate_got (htab, 8);
0e1862bb 6471 if (bfd_link_pic (info))
3b36f7e6
AM
6472 htab->relgot->size += sizeof (Elf32_External_Rela);
6473 }
6474 else
6475 htab->tlsld_got.offset = (bfd_vma) -1;
6476
4a3dc543 6477 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
6478 {
6479 unsigned int g_o_t = 32768;
6480
4d962050
AM
6481 /* If we haven't allocated the header, do so now. When we get here,
6482 for old plt/got the got size will be 0 to 32764 (not allocated),
6483 or 32780 to 65536 (header allocated). For new plt/got, the
6484 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM
6485 if (htab->got->size <= 32768)
6486 {
6487 g_o_t = htab->got->size;
4a3dc543 6488 if (htab->plt_type == PLT_OLD)
4d962050 6489 g_o_t += 4;
3b36f7e6
AM
6490 htab->got->size += htab->got_header_size;
6491 }
3b36f7e6
AM
6492
6493 htab->elf.hgot->root.u.def.value = g_o_t;
6494 }
0e1862bb 6495 if (bfd_link_pic (info))
bd6c6e2b
AM
6496 {
6497 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
93d1b056
AM
6498
6499 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6500 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
bd6c6e2b 6501 }
15bfcc77
AM
6502 if (info->emitrelocations)
6503 {
6504 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6505
6506 if (sda != NULL && sda->ref_regular)
6507 sda->root.u.def.section->flags |= SEC_KEEP;
6508 sda = htab->sdata[1].sym;
6509 if (sda != NULL && sda->ref_regular)
6510 sda->root.u.def.section->flags |= SEC_KEEP;
6511 }
3b36f7e6 6512
e054468f
AM
6513 if (htab->glink != NULL
6514 && htab->glink->size != 0
6515 && htab->elf.dynamic_sections_created)
d7128ce4
AM
6516 {
6517 htab->glink_pltresolve = htab->glink->size;
888a7fc3
AM
6518 /* Space for the branch table. ??? We don't need entries for
6519 non-dynamic symbols in this table. This case can arise with
6520 static ifuncs or forced local ifuncs. */
86b9da88
AM
6521 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6522 /* Pad out to align the start of PLTresolve. */
5446cbdf
AM
6523 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6524 ? 63 : 15);
d7128ce4 6525 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910 6526
5446cbdf 6527 if (htab->params->emit_stub_syms)
0ba07910
AM
6528 {
6529 struct elf_link_hash_entry *sh;
6530 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6531 TRUE, FALSE, FALSE);
6532 if (sh == NULL)
6533 return FALSE;
6534 if (sh->root.type == bfd_link_hash_new)
6535 {
6536 sh->root.type = bfd_link_hash_defined;
6537 sh->root.u.def.section = htab->glink;
6538 sh->root.u.def.value = htab->glink_pltresolve;
6539 sh->ref_regular = 1;
6540 sh->def_regular = 1;
6541 sh->ref_regular_nonweak = 1;
6542 sh->forced_local = 1;
6543 sh->non_elf = 0;
2ec55de3 6544 sh->root.linker_def = 1;
0ba07910
AM
6545 }
6546 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6547 TRUE, FALSE, FALSE);
6548 if (sh == NULL)
6549 return FALSE;
6550 if (sh->root.type == bfd_link_hash_new)
6551 {
6552 sh->root.type = bfd_link_hash_defined;
6553 sh->root.u.def.section = htab->glink;
6554 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6555 sh->ref_regular = 1;
6556 sh->def_regular = 1;
6557 sh->ref_regular_nonweak = 1;
6558 sh->forced_local = 1;
6559 sh->non_elf = 0;
2ec55de3 6560 sh->root.linker_def = 1;
0ba07910
AM
6561 }
6562 }
d7128ce4
AM
6563 }
6564
6177242a
AM
6565 if (htab->glink != NULL
6566 && htab->glink->size != 0
6567 && htab->glink_eh_frame != NULL
9a2a56cc
AM
6568 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6569 && _bfd_elf_eh_frame_present (info))
6177242a
AM
6570 {
6571 s = htab->glink_eh_frame;
6572 s->size = sizeof (glink_eh_frame_cie) + 20;
0e1862bb 6573 if (bfd_link_pic (info))
6177242a
AM
6574 {
6575 s->size += 4;
6576 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6577 s->size += 4;
6578 }
6579 }
6580
25dbc73a
AM
6581 /* We've now determined the sizes of the various dynamic sections.
6582 Allocate memory for them. */
6583 relocs = FALSE;
6584 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 6585 {
9d8504b1
PB
6586 bfd_boolean strip_section = TRUE;
6587
25dbc73a
AM
6588 if ((s->flags & SEC_LINKER_CREATED) == 0)
6589 continue;
252b5132 6590
25dbc73a 6591 if (s == htab->plt
e054468f 6592 || s == htab->got)
25dbc73a 6593 {
9d8504b1
PB
6594 /* We'd like to strip these sections if they aren't needed, but if
6595 we've exported dynamic symbols from them we must leave them.
6596 It's too late to tell BFD to get rid of the symbols. */
e054468f 6597 if (htab->elf.hplt != NULL)
9d8504b1 6598 strip_section = FALSE;
25dbc73a
AM
6599 /* Strip this section if we don't need it; see the
6600 comment below. */
6601 }
e054468f
AM
6602 else if (s == htab->iplt
6603 || s == htab->glink
6177242a 6604 || s == htab->glink_eh_frame
e054468f
AM
6605 || s == htab->sgotplt
6606 || s == htab->sbss
6607 || s == htab->dynbss
15bfcc77 6608 || s == htab->dynsbss)
25dbc73a 6609 {
c9a2f333 6610 /* Strip these too. */
25dbc73a 6611 }
15bfcc77
AM
6612 else if (s == htab->sdata[0].section
6613 || s == htab->sdata[1].section)
6614 {
6615 strip_section = (s->flags & SEC_KEEP) == 0;
6616 }
a0f49396
NC
6617 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6618 ".rela"))
25dbc73a 6619 {
c456f082 6620 if (s->size != 0)
25dbc73a
AM
6621 {
6622 /* Remember whether there are any relocation sections. */
6623 relocs = TRUE;
252b5132 6624
25dbc73a
AM
6625 /* We use the reloc_count field as a counter if we need
6626 to copy relocs into the output file. */
6627 s->reloc_count = 0;
252b5132
RH
6628 }
6629 }
25dbc73a
AM
6630 else
6631 {
6632 /* It's not one of our sections, so don't allocate space. */
6633 continue;
6634 }
252b5132 6635
9d8504b1 6636 if (s->size == 0 && strip_section)
25dbc73a 6637 {
c456f082
AM
6638 /* If we don't need this section, strip it from the
6639 output file. This is mostly to handle .rela.bss and
6640 .rela.plt. We must create both sections in
6641 create_dynamic_sections, because they must be created
6642 before the linker maps input sections to output
6643 sections. The linker does that before
6644 adjust_dynamic_symbol is called, and it is that
6645 function which decides whether anything needs to go
6646 into these sections. */
8423293d 6647 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
6648 continue;
6649 }
7fce784e 6650
d7128ce4 6651 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
6652 continue;
6653
25dbc73a
AM
6654 /* Allocate memory for the section contents. */
6655 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6656 if (s->contents == NULL)
6657 return FALSE;
6658 }
252b5132 6659
25dbc73a 6660 if (htab->elf.dynamic_sections_created)
7619e7c7 6661 {
25dbc73a
AM
6662 /* Add some entries to the .dynamic section. We fill in the
6663 values later, in ppc_elf_finish_dynamic_sections, but we
6664 must add the entries now so that we get the correct size for
6665 the .dynamic section. The DT_DEBUG entry is filled in by the
6666 dynamic linker and used by the debugger. */
6667#define add_dynamic_entry(TAG, VAL) \
6668 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 6669
0e1862bb 6670 if (bfd_link_executable (info))
7619e7c7 6671 {
25dbc73a
AM
6672 if (!add_dynamic_entry (DT_DEBUG, 0))
6673 return FALSE;
7619e7c7
AM
6674 }
6675
25dbc73a 6676 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 6677 {
25dbc73a
AM
6678 if (!add_dynamic_entry (DT_PLTGOT, 0)
6679 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6680 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6681 || !add_dynamic_entry (DT_JMPREL, 0))
6682 return FALSE;
6683 }
7619e7c7 6684
c7e17e05
AM
6685 if (htab->plt_type == PLT_NEW
6686 && htab->glink != NULL
6687 && htab->glink->size != 0)
d7128ce4 6688 {
1fe44d79 6689 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4 6690 return FALSE;
5446cbdf 6691 if (!htab->params->no_tls_get_addr_opt
a7f2871e
AM
6692 && htab->tls_get_addr != NULL
6693 && htab->tls_get_addr->plt.plist != NULL
e8910a83 6694 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
a7f2871e 6695 return FALSE;
d7128ce4
AM
6696 }
6697
25dbc73a
AM
6698 if (relocs)
6699 {
6700 if (!add_dynamic_entry (DT_RELA, 0)
6701 || !add_dynamic_entry (DT_RELASZ, 0)
6702 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6703 return FALSE;
6704 }
7619e7c7 6705
25dbc73a
AM
6706 /* If any dynamic relocs apply to a read-only section, then we
6707 need a DT_TEXTREL entry. */
6708 if ((info->flags & DF_TEXTREL) == 0)
625af618 6709 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 6710 info);
7619e7c7 6711
25dbc73a
AM
6712 if ((info->flags & DF_TEXTREL) != 0)
6713 {
6714 if (!add_dynamic_entry (DT_TEXTREL, 0))
6715 return FALSE;
7619e7c7 6716 }
7a2b07ff
NS
6717 if (htab->is_vxworks
6718 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6719 return FALSE;
6720 }
25dbc73a
AM
6721#undef add_dynamic_entry
6722
7e01508c
AM
6723 if (htab->glink_eh_frame != NULL
6724 && htab->glink_eh_frame->contents != NULL)
6725 {
6726 unsigned char *p = htab->glink_eh_frame->contents;
6727 bfd_vma val;
6728
6729 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6730 /* CIE length (rewrite in case little-endian). */
6731 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6732 p += sizeof (glink_eh_frame_cie);
6733 /* FDE length. */
6734 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6735 bfd_put_32 (htab->elf.dynobj, val, p);
6736 p += 4;
6737 /* CIE pointer. */
6738 val = p - htab->glink_eh_frame->contents;
6739 bfd_put_32 (htab->elf.dynobj, val, p);
6740 p += 4;
6741 /* Offset to .glink. Set later. */
6742 p += 4;
6743 /* .glink size. */
6744 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6745 p += 4;
6746 /* Augmentation. */
6747 p += 1;
6748
0e1862bb 6749 if (bfd_link_pic (info)
7e01508c
AM
6750 && htab->elf.dynamic_sections_created)
6751 {
6752 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6753 if (adv < 64)
6754 *p++ = DW_CFA_advance_loc + adv;
6755 else if (adv < 256)
6756 {
6757 *p++ = DW_CFA_advance_loc1;
6758 *p++ = adv;
6759 }
6760 else if (adv < 65536)
6761 {
6762 *p++ = DW_CFA_advance_loc2;
6763 bfd_put_16 (htab->elf.dynobj, adv, p);
6764 p += 2;
6765 }
6766 else
6767 {
6768 *p++ = DW_CFA_advance_loc4;
6769 bfd_put_32 (htab->elf.dynobj, adv, p);
6770 p += 4;
6771 }
6772 *p++ = DW_CFA_register;
6773 *p++ = 65;
6774 p++;
6775 *p++ = DW_CFA_advance_loc + 4;
6776 *p++ = DW_CFA_restore_extended;
6777 *p++ = 65;
6778 }
6779 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6780 == htab->glink_eh_frame->size);
6781 }
6782
7619e7c7
AM
6783 return TRUE;
6784}
0eb4a168 6785
93d1b056
AM
6786/* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6787 if it looks like nothing is using them. */
6788
6789static void
6790maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6791{
6792 struct elf_link_hash_entry *sda = lsect->sym;
6793
6794 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6795 {
6796 asection *s;
6797
6798 s = bfd_get_section_by_name (output_bfd, lsect->name);
6799 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6800 {
6801 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6802 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6803 {
6804 sda->def_regular = 0;
6805 /* This is somewhat magic. See elf_link_output_extsym. */
6806 sda->ref_dynamic = 1;
6807 sda->forced_local = 0;
6808 }
6809 }
6810 }
6811}
6812
6813void
6814ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6815{
6816 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6817
6818 if (htab != NULL)
6819 {
6820 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6821 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6822 }
6823}
6824
6825
0eb4a168
AM
6826/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6827
6828static bfd_boolean
6829ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6830{
6831 if (h->plt.plist != NULL
6832 && !h->def_regular
6833 && (!h->pointer_equality_needed
6834 || !h->ref_regular_nonweak))
6835 return FALSE;
6836
6837 return _bfd_elf_hash_symbol (h);
6838}
25dbc73a
AM
6839\f
6840#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6841
01017ef8
NS
6842/* Relaxation trampolines. r12 is available for clobbering (r11, is
6843 used for some functions that are allowed to break the ABI). */
25dbc73a
AM
6844static const int shared_stub_entry[] =
6845 {
6846 0x7c0802a6, /* mflr 0 */
6847 0x429f0005, /* bcl 20, 31, .Lxxx */
01017ef8
NS
6848 0x7d8802a6, /* mflr 12 */
6849 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
53291d1f 6850 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
25dbc73a 6851 0x7c0803a6, /* mtlr 0 */
01017ef8 6852 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6853 0x4e800420, /* bctr */
6854 };
6855
6856static const int stub_entry[] =
6857 {
01017ef8
NS
6858 0x3d800000, /* lis 12,xxx@ha */
6859 0x398c0000, /* addi 12,12,xxx@l */
6860 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6861 0x4e800420, /* bctr */
6862 };
6863
5446cbdf
AM
6864struct ppc_elf_relax_info
6865{
6866 unsigned int workaround_size;
d3e454b9 6867 unsigned int picfixup_size;
5446cbdf
AM
6868};
6869
6870/* This function implements long branch trampolines, and the ppc476
6871 icache bug workaround. Any section needing trampolines or patch
6872 space for the workaround has its size extended so that we can
53291d1f 6873 add trampolines at the end of the section. */
5446cbdf 6874
25dbc73a
AM
6875static bfd_boolean
6876ppc_elf_relax_section (bfd *abfd,
6877 asection *isec,
6878 struct bfd_link_info *link_info,
6879 bfd_boolean *again)
6880{
d3e454b9 6881 struct one_branch_fixup
25dbc73a 6882 {
d3e454b9 6883 struct one_branch_fixup *next;
25dbc73a 6884 asection *tsec;
01017ef8
NS
6885 /* Final link, can use the symbol offset. For a
6886 relocatable link we use the symbol's index. */
25dbc73a
AM
6887 bfd_vma toff;
6888 bfd_vma trampoff;
6889 };
7619e7c7 6890
25dbc73a
AM
6891 Elf_Internal_Shdr *symtab_hdr;
6892 bfd_byte *contents = NULL;
6893 Elf_Internal_Sym *isymbuf = NULL;
6894 Elf_Internal_Rela *internal_relocs = NULL;
5446cbdf 6895 Elf_Internal_Rela *irel, *irelend = NULL;
d3e454b9 6896 struct one_branch_fixup *branch_fixups = NULL;
5446cbdf 6897 struct ppc_elf_relax_info *relax_info = NULL;
9bc4e62b 6898 unsigned changes = 0;
5446cbdf 6899 bfd_boolean workaround_change;
d7128ce4 6900 struct ppc_elf_link_hash_table *htab;
d3e454b9 6901 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
a6aa5195 6902 asection *got2;
50248c89 6903 bfd_boolean maybe_pasted;
7619e7c7 6904
25dbc73a 6905 *again = FALSE;
7619e7c7 6906
5446cbdf 6907 /* No need to do anything with non-alloc or non-code sections. */
c87b5a93 6908 if ((isec->flags & SEC_ALLOC) == 0
a8ad78a7 6909 || (isec->flags & SEC_CODE) == 0
5446cbdf
AM
6910 || (isec->flags & SEC_LINKER_CREATED) != 0
6911 || isec->size < 4)
25dbc73a 6912 return TRUE;
7619e7c7 6913
c8a1f254
NS
6914 /* We cannot represent the required PIC relocs in the output, so don't
6915 do anything. The linker doesn't support mixing -shared and -r
6916 anyway. */
0e1862bb 6917 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
795bc6b3 6918 return TRUE;
5b914448 6919
5446cbdf
AM
6920 htab = ppc_elf_hash_table (link_info);
6921 if (htab == NULL)
6922 return TRUE;
6923
6924 isec->size = (isec->size + 3) & -4;
6925 if (isec->rawsize == 0)
6926 isec->rawsize = isec->size;
6927 trampbase = isec->size;
6928
53291d1f
AM
6929 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6930 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6931 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6932
d3e454b9
AM
6933 if (htab->params->ppc476_workaround
6934 || htab->params->pic_fixup > 0)
5446cbdf
AM
6935 {
6936 if (elf_section_data (isec)->sec_info == NULL)
6937 {
5446cbdf
AM
6938 elf_section_data (isec)->sec_info
6939 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6940 if (elf_section_data (isec)->sec_info == NULL)
6941 return FALSE;
6942 }
6943 relax_info = elf_section_data (isec)->sec_info;
6944 trampbase -= relax_info->workaround_size;
6945 }
6946
50248c89
AM
6947 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6948 || strcmp (isec->output_section->name, ".fini") == 0);
25dbc73a 6949 /* Space for a branch around any trampolines. */
5446cbdf
AM
6950 trampoff = trampbase;
6951 if (maybe_pasted && trampbase == isec->rawsize)
50248c89 6952 trampoff += 4;
7619e7c7 6953
0ffa91dd 6954 symtab_hdr = &elf_symtab_hdr (abfd);
d3e454b9
AM
6955 picfixup_size = 0;
6956 if (htab->params->branch_trampolines
6957 || htab->params->pic_fixup > 0)
7619e7c7 6958 {
5446cbdf
AM
6959 /* Get a copy of the native relocations. */
6960 if (isec->reloc_count != 0)
25dbc73a 6961 {
5446cbdf
AM
6962 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6963 link_info->keep_memory);
6964 if (internal_relocs == NULL)
6965 goto error_return;
25dbc73a 6966 }
7619e7c7 6967
5446cbdf
AM
6968 got2 = bfd_get_section_by_name (abfd, ".got2");
6969
6970 irelend = internal_relocs + isec->reloc_count;
6971 for (irel = internal_relocs; irel < irelend; irel++)
25dbc73a 6972 {
5446cbdf
AM
6973 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6974 bfd_vma toff, roff;
6975 asection *tsec;
d3e454b9 6976 struct one_branch_fixup *f;
5446cbdf 6977 size_t insn_offset = 0;
d3e454b9 6978 bfd_vma max_branch_offset = 0, val;
5446cbdf
AM
6979 bfd_byte *hit_addr;
6980 unsigned long t0;
6981 struct elf_link_hash_entry *h;
6982 struct plt_entry **plist;
6983 unsigned char sym_type;
6984
6985 switch (r_type)
6986 {
6987 case R_PPC_REL24:
6988 case R_PPC_LOCAL24PC:
6989 case R_PPC_PLTREL24:
6990 max_branch_offset = 1 << 25;
6991 break;
6992
6993 case R_PPC_REL14:
6994 case R_PPC_REL14_BRTAKEN:
6995 case R_PPC_REL14_BRNTAKEN:
6996 max_branch_offset = 1 << 15;
6997 break;
7fce784e 6998
d3e454b9
AM
6999 case R_PPC_ADDR16_HA:
7000 if (htab->params->pic_fixup > 0)
7001 break;
7002 continue;
7003
5446cbdf
AM
7004 default:
7005 continue;
7006 }
7007
7008 /* Get the value of the symbol referred to by the reloc. */
7009 h = NULL;
7010 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
25dbc73a 7011 {
5446cbdf
AM
7012 /* A local symbol. */
7013 Elf_Internal_Sym *isym;
7014
7015 /* Read this BFD's local symbols. */
25dbc73a 7016 if (isymbuf == NULL)
5446cbdf
AM
7017 {
7018 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7019 if (isymbuf == NULL)
7020 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7021 symtab_hdr->sh_info, 0,
7022 NULL, NULL, NULL);
7023 if (isymbuf == 0)
7024 goto error_return;
7025 }
7026 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7027 if (isym->st_shndx == SHN_UNDEF)
7028 tsec = bfd_und_section_ptr;
7029 else if (isym->st_shndx == SHN_ABS)
7030 tsec = bfd_abs_section_ptr;
7031 else if (isym->st_shndx == SHN_COMMON)
7032 tsec = bfd_com_section_ptr;
7033 else
7034 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7035
7036 toff = isym->st_value;
7037 sym_type = ELF_ST_TYPE (isym->st_info);
25dbc73a 7038 }
25dbc73a 7039 else
5446cbdf
AM
7040 {
7041 /* Global symbol handling. */
7042 unsigned long indx;
7fce784e 7043
5446cbdf
AM
7044 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7045 h = elf_sym_hashes (abfd)[indx];
7619e7c7 7046
5446cbdf
AM
7047 while (h->root.type == bfd_link_hash_indirect
7048 || h->root.type == bfd_link_hash_warning)
7049 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 7050
5446cbdf
AM
7051 if (h->root.type == bfd_link_hash_defined
7052 || h->root.type == bfd_link_hash_defweak)
7053 {
7054 tsec = h->root.u.def.section;
7055 toff = h->root.u.def.value;
7056 }
7057 else if (h->root.type == bfd_link_hash_undefined
7058 || h->root.type == bfd_link_hash_undefweak)
7059 {
7060 tsec = bfd_und_section_ptr;
0e1862bb 7061 toff = bfd_link_relocatable (link_info) ? indx : 0;
5446cbdf
AM
7062 }
7063 else
7064 continue;
7065
9f7552cf
AM
7066 /* If this branch is to __tls_get_addr then we may later
7067 optimise away the call. We won't be needing a long-
7068 branch stub in that case. */
0e1862bb 7069 if (bfd_link_executable (link_info)
9f7552cf
AM
7070 && h == htab->tls_get_addr
7071 && irel != internal_relocs)
7072 {
7073 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7074 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7075 unsigned int tls_mask = 0;
7076
7077 /* The previous reloc should be one of R_PPC_TLSGD or
7078 R_PPC_TLSLD, or for older object files, a reloc
7079 on the __tls_get_addr arg setup insn. Get tls
7080 mask bits from the symbol on that reloc. */
7081 if (t_symndx < symtab_hdr->sh_info)
7082 {
7083 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7084
7085 if (local_got_offsets != NULL)
7086 {
7087 struct plt_entry **local_plt = (struct plt_entry **)
7088 (local_got_offsets + symtab_hdr->sh_info);
7089 char *lgot_masks = (char *)
7090 (local_plt + symtab_hdr->sh_info);
7091 tls_mask = lgot_masks[t_symndx];
7092 }
7093 }
7094 else
7095 {
7096 struct elf_link_hash_entry *th
7097 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7098
7099 while (th->root.type == bfd_link_hash_indirect
7100 || th->root.type == bfd_link_hash_warning)
7101 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7102
7103 tls_mask
7104 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7105 }
7106
7107 /* The mask bits tell us if the call will be
7108 optimised away. */
7109 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7110 && (t_rtype == R_PPC_TLSGD
7111 || t_rtype == R_PPC_GOT_TLSGD16
7112 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7113 continue;
7114 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7115 && (t_rtype == R_PPC_TLSLD
7116 || t_rtype == R_PPC_GOT_TLSLD16
7117 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7118 continue;
7119 }
7120
5446cbdf
AM
7121 sym_type = h->type;
7122 }
7619e7c7 7123
d3e454b9
AM
7124 if (r_type == R_PPC_ADDR16_HA)
7125 {
7126 if (h != NULL
7127 && !h->def_regular
7128 && h->protected_def
7129 && ppc_elf_hash_entry (h)->has_addr16_ha
7130 && ppc_elf_hash_entry (h)->has_addr16_lo)
7131 picfixup_size += 12;
7132 continue;
7133 }
7134
5446cbdf
AM
7135 /* The condition here under which we call find_plt_ent must
7136 match that in relocate_section. If we call find_plt_ent here
7137 but not in relocate_section, or vice versa, then the branch
7138 destination used here may be incorrect. */
7139 plist = NULL;
7140 if (h != NULL)
25dbc73a 7141 {
5446cbdf
AM
7142 /* We know is_branch_reloc (r_type) is true. */
7143 if (h->type == STT_GNU_IFUNC
7144 || r_type == R_PPC_PLTREL24)
7145 plist = &h->plt.plist;
25dbc73a 7146 }
5446cbdf
AM
7147 else if (sym_type == STT_GNU_IFUNC
7148 && elf_local_got_offsets (abfd) != NULL)
c8a1f254 7149 {
5446cbdf
AM
7150 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7151 struct plt_entry **local_plt = (struct plt_entry **)
7152 (local_got_offsets + symtab_hdr->sh_info);
7153 plist = local_plt + ELF32_R_SYM (irel->r_info);
c8a1f254 7154 }
5446cbdf 7155 if (plist != NULL)
a9585d22 7156 {
5446cbdf
AM
7157 bfd_vma addend = 0;
7158 struct plt_entry *ent;
7159
0e1862bb 7160 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
5446cbdf
AM
7161 addend = irel->r_addend;
7162 ent = find_plt_ent (plist, got2, addend);
7163 if (ent != NULL)
a9585d22 7164 {
5446cbdf
AM
7165 if (htab->plt_type == PLT_NEW
7166 || h == NULL
7167 || !htab->elf.dynamic_sections_created
7168 || h->dynindx == -1)
7169 {
7170 tsec = htab->glink;
7171 toff = ent->glink_offset;
7172 }
7173 else
7174 {
7175 tsec = htab->plt;
7176 toff = ent->plt.offset;
7177 }
de972ffa
AM
7178 }
7179 }
de972ffa 7180
5446cbdf
AM
7181 /* If the branch and target are in the same section, you have
7182 no hope of adding stubs. We'll error out later should the
7183 branch overflow. */
7184 if (tsec == isec)
7185 continue;
25dbc73a 7186
5446cbdf
AM
7187 /* There probably isn't any reason to handle symbols in
7188 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7189 attribute for a code section, and we are only looking at
7190 branches. However, implement it correctly here as a
7191 reference for other target relax_section functions. */
7192 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7193 {
7194 /* At this stage in linking, no SEC_MERGE symbol has been
7195 adjusted, so all references to such symbols need to be
7196 passed through _bfd_merged_section_offset. (Later, in
7197 relocate_section, all SEC_MERGE symbols *except* for
7198 section symbols have been adjusted.)
7199
7200 gas may reduce relocations against symbols in SEC_MERGE
7201 sections to a relocation against the section symbol when
7202 the original addend was zero. When the reloc is against
7203 a section symbol we should include the addend in the
7204 offset passed to _bfd_merged_section_offset, since the
7205 location of interest is the original symbol. On the
7206 other hand, an access to "sym+addend" where "sym" is not
7207 a section symbol should not include the addend; Such an
7208 access is presumed to be an offset from "sym"; The
7209 location of interest is just "sym". */
7210 if (sym_type == STT_SECTION)
7211 toff += irel->r_addend;
7212
7213 toff
7214 = _bfd_merged_section_offset (abfd, &tsec,
7215 elf_section_data (tsec)->sec_info,
7216 toff);
7217
7218 if (sym_type != STT_SECTION)
7219 toff += irel->r_addend;
7220 }
7221 /* PLTREL24 addends are special. */
7222 else if (r_type != R_PPC_PLTREL24)
25dbc73a 7223 toff += irel->r_addend;
7619e7c7 7224
5446cbdf 7225 /* Attempted -shared link of non-pic code loses. */
0e1862bb 7226 if ((!bfd_link_relocatable (link_info)
5446cbdf
AM
7227 && tsec == bfd_und_section_ptr)
7228 || tsec->output_section == NULL
7229 || (tsec->owner != NULL
7230 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7231 continue;
7619e7c7 7232
5446cbdf 7233 roff = irel->r_offset;
7de713b9 7234
5446cbdf
AM
7235 /* If the branch is in range, no need to do anything. */
7236 if (tsec != bfd_und_section_ptr
0e1862bb 7237 && (!bfd_link_relocatable (link_info)
5446cbdf
AM
7238 /* A relocatable link may have sections moved during
7239 final link, so do not presume they remain in range. */
7240 || tsec->output_section == isec->output_section))
7241 {
7242 bfd_vma symaddr, reladdr;
7619e7c7 7243
5446cbdf
AM
7244 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7245 reladdr = isec->output_section->vma + isec->output_offset + roff;
7246 if (symaddr - reladdr + max_branch_offset
7247 < 2 * max_branch_offset)
7248 continue;
7249 }
01017ef8 7250
5446cbdf 7251 /* Look for an existing fixup to this address. */
d3e454b9 7252 for (f = branch_fixups; f ; f = f->next)
5446cbdf
AM
7253 if (f->tsec == tsec && f->toff == toff)
7254 break;
252b5132 7255
5446cbdf
AM
7256 if (f == NULL)
7257 {
7258 size_t size;
7259 unsigned long stub_rtype;
25dbc73a 7260
5446cbdf
AM
7261 val = trampoff - roff;
7262 if (val >= max_branch_offset)
7263 /* Oh dear, we can't reach a trampoline. Don't try to add
7264 one. We'll report an error later. */
7265 continue;
252b5132 7266
0e1862bb 7267 if (bfd_link_pic (link_info))
5446cbdf
AM
7268 {
7269 size = 4 * ARRAY_SIZE (shared_stub_entry);
7270 insn_offset = 12;
7271 }
7272 else
7273 {
7274 size = 4 * ARRAY_SIZE (stub_entry);
7275 insn_offset = 0;
7276 }
7277 stub_rtype = R_PPC_RELAX;
7278 if (tsec == htab->plt
7279 || tsec == htab->glink)
7280 {
7281 stub_rtype = R_PPC_RELAX_PLT;
7282 if (r_type == R_PPC_PLTREL24)
7283 stub_rtype = R_PPC_RELAX_PLTREL24;
7284 }
252b5132 7285
5446cbdf
AM
7286 /* Hijack the old relocation. Since we need two
7287 relocations for this use a "composite" reloc. */
7288 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7289 stub_rtype);
7290 irel->r_offset = trampoff + insn_offset;
7291 if (r_type == R_PPC_PLTREL24
7292 && stub_rtype != R_PPC_RELAX_PLTREL24)
7293 irel->r_addend = 0;
7294
7295 /* Record the fixup so we don't do it again this section. */
7296 f = bfd_malloc (sizeof (*f));
d3e454b9 7297 f->next = branch_fixups;
5446cbdf
AM
7298 f->tsec = tsec;
7299 f->toff = toff;
7300 f->trampoff = trampoff;
d3e454b9 7301 branch_fixups = f;
5446cbdf
AM
7302
7303 trampoff += size;
7304 changes++;
25dbc73a
AM
7305 }
7306 else
7307 {
5446cbdf
AM
7308 val = f->trampoff - roff;
7309 if (val >= max_branch_offset)
7310 continue;
252b5132 7311
5446cbdf
AM
7312 /* Nop out the reloc, since we're finalizing things here. */
7313 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7314 }
252b5132 7315
5446cbdf
AM
7316 /* Get the section contents. */
7317 if (contents == NULL)
25dbc73a 7318 {
5446cbdf
AM
7319 /* Get cached copy if it exists. */
7320 if (elf_section_data (isec)->this_hdr.contents != NULL)
7321 contents = elf_section_data (isec)->this_hdr.contents;
25dbc73a 7322 /* Go get them off disk. */
5446cbdf 7323 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
25dbc73a
AM
7324 goto error_return;
7325 }
252b5132 7326
5446cbdf
AM
7327 /* Fix up the existing branch to hit the trampoline. */
7328 hit_addr = contents + roff;
7329 switch (r_type)
7330 {
7331 case R_PPC_REL24:
7332 case R_PPC_LOCAL24PC:
7333 case R_PPC_PLTREL24:
7334 t0 = bfd_get_32 (abfd, hit_addr);
7335 t0 &= ~0x3fffffc;
7336 t0 |= val & 0x3fffffc;
7337 bfd_put_32 (abfd, t0, hit_addr);
7338 break;
252b5132 7339
5446cbdf
AM
7340 case R_PPC_REL14:
7341 case R_PPC_REL14_BRTAKEN:
7342 case R_PPC_REL14_BRNTAKEN:
7343 t0 = bfd_get_32 (abfd, hit_addr);
7344 t0 &= ~0xfffc;
7345 t0 |= val & 0xfffc;
7346 bfd_put_32 (abfd, t0, hit_addr);
7347 break;
7348 }
25dbc73a 7349 }
252b5132 7350
d3e454b9 7351 while (branch_fixups != NULL)
25dbc73a 7352 {
d3e454b9
AM
7353 struct one_branch_fixup *f = branch_fixups;
7354 branch_fixups = branch_fixups->next;
25dbc73a
AM
7355 free (f);
7356 }
5446cbdf 7357 }
252b5132 7358
5446cbdf
AM
7359 workaround_change = FALSE;
7360 newsize = trampoff;
795bc6b3 7361 if (htab->params->ppc476_workaround
0e1862bb 7362 && (!bfd_link_relocatable (link_info)
795bc6b3 7363 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
5446cbdf
AM
7364 {
7365 bfd_vma addr, end_addr;
7366 unsigned int crossings;
795bc6b3 7367 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf
AM
7368
7369 addr = isec->output_section->vma + isec->output_offset;
6128f9cf 7370 end_addr = addr + trampoff;
5446cbdf 7371 addr &= -pagesize;
795bc6b3 7372 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
5446cbdf
AM
7373 if (crossings != 0)
7374 {
7375 /* Keep space aligned, to ensure the patch code itself does
7376 not cross a page. Don't decrease size calculated on a
7377 previous pass as otherwise we might never settle on a layout. */
1e269e9b 7378 newsize = 15 - ((end_addr - 1) & 15);
5446cbdf
AM
7379 newsize += crossings * 16;
7380 if (relax_info->workaround_size < newsize)
7381 {
7382 relax_info->workaround_size = newsize;
7383 workaround_change = TRUE;
5446cbdf
AM
7384 }
7385 /* Ensure relocate_section is called. */
7386 isec->flags |= SEC_RELOC;
7387 }
7388 newsize = trampoff + relax_info->workaround_size;
7389 }
7390
d3e454b9
AM
7391 if (htab->params->pic_fixup > 0)
7392 {
7393 picfixup_size -= relax_info->picfixup_size;
7394 if (picfixup_size != 0)
7395 relax_info->picfixup_size += picfixup_size;
7396 newsize += relax_info->picfixup_size;
7397 }
7398
7399 if (changes != 0 || picfixup_size != 0 || workaround_change)
5446cbdf
AM
7400 isec->size = newsize;
7401
25dbc73a
AM
7402 if (isymbuf != NULL
7403 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 7404 {
25dbc73a
AM
7405 if (! link_info->keep_memory)
7406 free (isymbuf);
252b5132 7407 else
25dbc73a
AM
7408 {
7409 /* Cache the symbols for elf_link_input_bfd. */
7410 symtab_hdr->contents = (unsigned char *) isymbuf;
7411 }
252b5132
RH
7412 }
7413
25dbc73a
AM
7414 if (contents != NULL
7415 && elf_section_data (isec)->this_hdr.contents != contents)
7416 {
53291d1f 7417 if (!changes && !link_info->keep_memory)
25dbc73a
AM
7418 free (contents);
7419 else
7420 {
7421 /* Cache the section contents for elf_link_input_bfd. */
7422 elf_section_data (isec)->this_hdr.contents = contents;
7423 }
7424 }
252b5132 7425
d3e454b9 7426 changes += picfixup_size;
9bc4e62b 7427 if (changes != 0)
25dbc73a 7428 {
9bc4e62b
NS
7429 /* Append sufficient NOP relocs so we can write out relocation
7430 information for the trampolines. */
d4730f92 7431 Elf_Internal_Shdr *rel_hdr;
9bc4e62b
NS
7432 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7433 * sizeof (*new_relocs));
7434 unsigned ix;
5b914448 7435
9bc4e62b
NS
7436 if (!new_relocs)
7437 goto error_return;
7438 memcpy (new_relocs, internal_relocs,
7439 isec->reloc_count * sizeof (*new_relocs));
7440 for (ix = changes; ix--;)
7441 {
7442 irel = new_relocs + ix + isec->reloc_count;
7443
7444 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7445 }
7446 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 7447 free (internal_relocs);
9bc4e62b
NS
7448 elf_section_data (isec)->relocs = new_relocs;
7449 isec->reloc_count += changes;
d4730f92
BS
7450 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7451 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
25dbc73a 7452 }
5446cbdf
AM
7453 else if (internal_relocs != NULL
7454 && elf_section_data (isec)->relocs != internal_relocs)
9bc4e62b 7455 free (internal_relocs);
252b5132 7456
5446cbdf 7457 *again = changes != 0 || workaround_change;
b34976b6 7458 return TRUE;
25dbc73a
AM
7459
7460 error_return:
d3e454b9 7461 while (branch_fixups != NULL)
5446cbdf 7462 {
d3e454b9
AM
7463 struct one_branch_fixup *f = branch_fixups;
7464 branch_fixups = branch_fixups->next;
5446cbdf
AM
7465 free (f);
7466 }
25dbc73a
AM
7467 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7468 free (isymbuf);
7469 if (contents != NULL
7470 && elf_section_data (isec)->this_hdr.contents != contents)
7471 free (contents);
7472 if (internal_relocs != NULL
7473 && elf_section_data (isec)->relocs != internal_relocs)
7474 free (internal_relocs);
7475 return FALSE;
252b5132 7476}
252b5132 7477\f
8a696751
AM
7478/* What to do when ld finds relocations against symbols defined in
7479 discarded sections. */
7480
7481static unsigned int
7482ppc_elf_action_discarded (asection *sec)
7483{
7484 if (strcmp (".fixup", sec->name) == 0)
7485 return 0;
7486
7487 if (strcmp (".got2", sec->name) == 0)
7488 return 0;
7489
7490 return _bfd_elf_default_action_discarded (sec);
7491}
c9a2f333 7492\f
25dbc73a 7493/* Fill in the address for a pointer generated in a linker section. */
252b5132 7494
25dbc73a 7495static bfd_vma
76750a2f 7496elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
7497 elf_linker_section_t *lsect,
7498 struct elf_link_hash_entry *h,
7499 bfd_vma relocation,
2bb04cf2 7500 const Elf_Internal_Rela *rel)
25dbc73a
AM
7501{
7502 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 7503
25dbc73a 7504 BFD_ASSERT (lsect != NULL);
252b5132 7505
25dbc73a 7506 if (h != NULL)
252b5132 7507 {
25dbc73a
AM
7508 /* Handle global symbol. */
7509 struct ppc_elf_link_hash_entry *eh;
252b5132 7510
25dbc73a 7511 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
7512 BFD_ASSERT (eh->elf.def_regular);
7513 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
7514 }
7515 else
7516 {
7517 /* Handle local symbol. */
7518 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 7519
0c8d6e5c 7520 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 7521 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
7522 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7523 }
252b5132 7524
76750a2f
AM
7525 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7526 rel->r_addend,
7527 lsect);
7528 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 7529
76750a2f
AM
7530 /* Offset will always be a multiple of four, so use the bottom bit
7531 as a "written" flag. */
7532 if ((linker_section_ptr->offset & 1) == 0)
7533 {
7534 bfd_put_32 (lsect->section->owner,
7535 relocation + linker_section_ptr->addend,
7536 lsect->section->contents + linker_section_ptr->offset);
7537 linker_section_ptr->offset += 1;
252b5132
RH
7538 }
7539
bd6c6e2b
AM
7540 relocation = (lsect->section->output_section->vma
7541 + lsect->section->output_offset
76750a2f 7542 + linker_section_ptr->offset - 1
bd6c6e2b 7543 - SYM_VAL (lsect->sym));
252b5132 7544
25dbc73a
AM
7545#ifdef DEBUG
7546 fprintf (stderr,
7547 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7548 lsect->name, (long) relocation, (long) relocation);
7549#endif
252b5132 7550
bd6c6e2b 7551 return relocation;
252b5132 7552}
25dbc73a 7553
e054468f
AM
7554#define PPC_LO(v) ((v) & 0xffff)
7555#define PPC_HI(v) (((v) >> 16) & 0xffff)
7556#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7557
7558static void
a7f2871e 7559write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
e054468f
AM
7560 struct bfd_link_info *info)
7561{
7562 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7563 bfd *output_bfd = info->output_bfd;
7564 bfd_vma plt;
e054468f
AM
7565
7566 plt = ((ent->plt.offset & ~1)
7567 + plt_sec->output_section->vma
7568 + plt_sec->output_offset);
e054468f 7569
0e1862bb 7570 if (bfd_link_pic (info))
e054468f
AM
7571 {
7572 bfd_vma got = 0;
7573
7574 if (ent->addend >= 32768)
7575 got = (ent->addend
7576 + ent->sec->output_section->vma
7577 + ent->sec->output_offset);
7578 else if (htab->elf.hgot != NULL)
7579 got = SYM_VAL (htab->elf.hgot);
7580
7581 plt -= got;
7582
7583 if (plt + 0x8000 < 0x10000)
7584 {
7585 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7586 p += 4;
7587 bfd_put_32 (output_bfd, MTCTR_11, p);
7588 p += 4;
7589 bfd_put_32 (output_bfd, BCTR, p);
7590 p += 4;
da3a2088 7591 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
e054468f
AM
7592 p += 4;
7593 }
7594 else
7595 {
7596 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7597 p += 4;
7598 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7599 p += 4;
7600 bfd_put_32 (output_bfd, MTCTR_11, p);
7601 p += 4;
7602 bfd_put_32 (output_bfd, BCTR, p);
7603 p += 4;
7604 }
7605 }
7606 else
7607 {
7608 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7609 p += 4;
7610 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7611 p += 4;
7612 bfd_put_32 (output_bfd, MTCTR_11, p);
7613 p += 4;
7614 bfd_put_32 (output_bfd, BCTR, p);
7615 p += 4;
7616 }
7617}
7618
bd6c6e2b
AM
7619/* Return true if symbol is defined statically. */
7620
7621static bfd_boolean
7622is_static_defined (struct elf_link_hash_entry *h)
7623{
7624 return ((h->root.type == bfd_link_hash_defined
7625 || h->root.type == bfd_link_hash_defweak)
7626 && h->root.u.def.section != NULL
7627 && h->root.u.def.section->output_section != NULL);
7628}
7629
2d0f3896
AM
7630/* If INSN is an opcode that may be used with an @tls operand, return
7631 the transformed insn for TLS optimisation, otherwise return 0. If
7632 REG is non-zero only match an insn with RB or RA equal to REG. */
7633
7634unsigned int
7635_bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7636{
7637 unsigned int rtra;
7638
7639 if ((insn & (0x3f << 26)) != 31 << 26)
7640 return 0;
7641
7642 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7643 rtra = insn & ((1 << 26) - (1 << 16));
7644 else if (((insn >> 16) & 0x1f) == reg)
7645 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7646 else
7647 return 0;
7648
7649 if ((insn & (0x3ff << 1)) == 266 << 1)
7650 /* add -> addi. */
7651 insn = 14 << 26;
7652 else if ((insn & (0x1f << 1)) == 23 << 1
7653 && ((insn & (0x1f << 6)) < 14 << 6
7654 || ((insn & (0x1f << 6)) >= 16 << 6
7655 && (insn & (0x1f << 6)) < 24 << 6)))
7656 /* load and store indexed -> dform. */
7657 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7658 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7659 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7660 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7661 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7662 /* lwax -> lwa. */
7663 insn = (58 << 26) | 2;
7664 else
7665 return 0;
7666 insn |= rtra;
7667 return insn;
7668}
7669
766bc656
AM
7670/* If INSN is an opcode that may be used with an @tprel operand, return
7671 the transformed insn for an undefined weak symbol, ie. with the
7672 thread pointer REG operand removed. Otherwise return 0. */
7673
7674unsigned int
7675_bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7676{
7677 if ((insn & (0x1f << 16)) == reg << 16
7678 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7679 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7680 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7681 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7682 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7683 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7684 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7685 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7686 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7687 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7688 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7689 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7690 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7691 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7692 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7693 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7694 && (insn & 3) != 1)
7695 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7696 && ((insn & 3) == 0 || (insn & 3) == 3))))
7697 {
7698 insn &= ~(0x1f << 16);
7699 }
7700 else if ((insn & (0x1f << 21)) == reg << 21
7701 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7702 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7703 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7704 {
7705 insn &= ~(0x1f << 21);
7706 insn |= (insn & (0x1f << 16)) << 5;
7707 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7708 insn -= 2 >> 26; /* convert to ori,oris */
7709 }
7710 else
7711 insn = 0;
7712 return insn;
7713}
7714
1fe532cf
AM
7715static bfd_boolean
7716is_insn_ds_form (unsigned int insn)
7717{
7718 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7719 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7720 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7721 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7722}
7723
7724static bfd_boolean
7725is_insn_dq_form (unsigned int insn)
7726{
a680de9a
PB
7727 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7728 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7729 && (insn & 3) == 1));
1fe532cf
AM
7730}
7731
252b5132
RH
7732/* The RELOCATE_SECTION function is called by the ELF backend linker
7733 to handle the relocations for a section.
7734
7735 The relocs are always passed as Rela structures; if the section
7736 actually uses Rel structures, the r_addend field will always be
7737 zero.
7738
7739 This function is responsible for adjust the section contents as
7740 necessary, and (if using Rela relocs and generating a
1049f94e 7741 relocatable output file) adjusting the reloc addend as
252b5132
RH
7742 necessary.
7743
7744 This function does not have to worry about setting the reloc
7745 address or the reloc symbol index.
7746
7747 LOCAL_SYMS is a pointer to the swapped in local symbols.
7748
7749 LOCAL_SECTIONS is an array giving the section in the input file
7750 corresponding to the st_shndx field of each local symbol.
7751
7752 The global hash table entry for the global symbols can be found
7753 via elf_sym_hashes (input_bfd).
7754
1049f94e 7755 When generating relocatable output, this function must handle
252b5132
RH
7756 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7757 going to be the section symbol corresponding to the output
7758 section, which means that the addend must be adjusted
7759 accordingly. */
7760
b34976b6 7761static bfd_boolean
55fd94b0
AM
7762ppc_elf_relocate_section (bfd *output_bfd,
7763 struct bfd_link_info *info,
7764 bfd *input_bfd,
7765 asection *input_section,
7766 bfd_byte *contents,
7767 Elf_Internal_Rela *relocs,
7768 Elf_Internal_Sym *local_syms,
7769 asection **local_sections)
252b5132 7770{
7619e7c7
AM
7771 Elf_Internal_Shdr *symtab_hdr;
7772 struct elf_link_hash_entry **sym_hashes;
7773 struct ppc_elf_link_hash_table *htab;
7774 Elf_Internal_Rela *rel;
c316a17c 7775 Elf_Internal_Rela *wrel;
7619e7c7
AM
7776 Elf_Internal_Rela *relend;
7777 Elf_Internal_Rela outrel;
f95f8542 7778 asection *got2;
252b5132 7779 bfd_vma *local_got_offsets;
b34976b6 7780 bfd_boolean ret = TRUE;
4fe5ca5b 7781 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 7782 bfd_boolean is_vxworks_tls;
d3e454b9
AM
7783 unsigned int picfixup_size = 0;
7784 struct ppc_elf_relax_info *relax_info = NULL;
b34976b6 7785
252b5132 7786#ifdef DEBUG
d003868e
AM
7787 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7788 "%ld relocations%s",
7789 input_bfd, input_section,
7790 (long) input_section->reloc_count,
0e1862bb 7791 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
252b5132
RH
7792#endif
7793
a6aa5195
AM
7794 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7795
e47cd125 7796 /* Initialize howto table if not already done. */
8da6118f 7797 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
7798 ppc_elf_howto_init ();
7799
7619e7c7 7800 htab = ppc_elf_hash_table (info);
252b5132 7801 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 7802 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 7803 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
7804 /* We have to handle relocations in vxworks .tls_vars sections
7805 specially, because the dynamic loader is 'weird'. */
0e1862bb 7806 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
3348747a
NS
7807 && !strcmp (input_section->output_section->name,
7808 ".tls_vars"));
d3e454b9
AM
7809 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7810 relax_info = elf_section_data (input_section)->sec_info;
c316a17c 7811 rel = wrel = relocs;
7619e7c7 7812 relend = relocs + input_section->reloc_count;
c316a17c 7813 for (; rel < relend; wrel++, rel++)
252b5132 7814 {
7619e7c7
AM
7815 enum elf_ppc_reloc_type r_type;
7816 bfd_vma addend;
7817 bfd_reloc_status_type r;
7818 Elf_Internal_Sym *sym;
7819 asection *sec;
7820 struct elf_link_hash_entry *h;
7821 const char *sym_name;
252b5132
RH
7822 reloc_howto_type *howto;
7823 unsigned long r_symndx;
7824 bfd_vma relocation;
91d6fa6a 7825 bfd_vma branch_bit, from;
7619e7c7
AM
7826 bfd_boolean unresolved_reloc;
7827 bfd_boolean warned;
7828 unsigned int tls_type, tls_mask, tls_gd;
e054468f 7829 struct plt_entry **ifunc;
86c95733 7830 struct reloc_howto_struct alt_howto;
7619e7c7 7831
c316a17c 7832 again:
55fd94b0
AM
7833 r_type = ELF32_R_TYPE (rel->r_info);
7834 sym = NULL;
7835 sec = NULL;
7836 h = NULL;
7619e7c7
AM
7837 unresolved_reloc = FALSE;
7838 warned = FALSE;
252b5132 7839 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 7840
252b5132
RH
7841 if (r_symndx < symtab_hdr->sh_info)
7842 {
7843 sym = local_syms + r_symndx;
7844 sec = local_sections[r_symndx];
26c61ae5 7845 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 7846
8517fae7 7847 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
7848 }
7849 else
7850 {
62d887d4
L
7851 bfd_boolean ignored;
7852
b2a8e766
AM
7853 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7854 r_symndx, symtab_hdr, sym_hashes,
7855 h, sec, relocation,
62d887d4 7856 unresolved_reloc, warned, ignored);
9abc968f 7857
252b5132 7858 sym_name = h->root.root.string;
7619e7c7
AM
7859 }
7860
dbaa2011 7861 if (sec != NULL && discarded_section (sec))
ab96bf03
AM
7862 {
7863 /* For relocs against symbols from removed linkonce sections,
7864 or sections discarded by a linker script, we just want the
7865 section contents zeroed. Avoid any special processing. */
7866 howto = NULL;
7867 if (r_type < R_PPC_max)
7868 howto = ppc_elf_howto_table[r_type];
c316a17c
AM
7869
7870 _bfd_clear_contents (howto, input_bfd, input_section,
7871 contents + rel->r_offset);
7872 wrel->r_offset = rel->r_offset;
7873 wrel->r_info = 0;
7874 wrel->r_addend = 0;
7875
7876 /* For ld -r, remove relocations in debug sections against
7877 sections defined in discarded sections. Not done for
7878 non-debug to preserve relocs in .eh_frame which the
7879 eh_frame editing code expects to be present. */
7880 if (bfd_link_relocatable (info)
7881 && (input_section->flags & SEC_DEBUGGING))
7882 wrel--;
7883
7884 continue;
ab96bf03
AM
7885 }
7886
0e1862bb 7887 if (bfd_link_relocatable (info))
ab96bf03
AM
7888 {
7889 if (got2 != NULL
7890 && r_type == R_PPC_PLTREL24
f75e0e33 7891 && rel->r_addend != 0)
ab96bf03
AM
7892 {
7893 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7894 addend specifies the GOT pointer offset within .got2. */
7895 rel->r_addend += got2->output_offset;
7896 }
53291d1f
AM
7897 if (r_type != R_PPC_RELAX_PLT
7898 && r_type != R_PPC_RELAX_PLTREL24
7899 && r_type != R_PPC_RELAX)
c316a17c 7900 goto copy_reloc;
ab96bf03
AM
7901 }
7902
7619e7c7
AM
7903 /* TLS optimizations. Replace instruction sequences and relocs
7904 based on information we collected in tls_optimize. We edit
7905 RELOCS so that --emit-relocs will output something sensible
7906 for the final instruction stream. */
7907 tls_mask = 0;
7908 tls_gd = 0;
727fc41e
AM
7909 if (h != NULL)
7910 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7911 else if (local_got_offsets != NULL)
7619e7c7 7912 {
e054468f 7913 struct plt_entry **local_plt;
727fc41e 7914 char *lgot_masks;
e054468f
AM
7915 local_plt
7916 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7917 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
727fc41e 7918 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM
7919 }
7920
7921 /* Ensure reloc mapping code below stays sane. */
7922 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7923 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7924 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7925 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7926 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7927 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7928 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7929 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7930 abort ();
7931 switch (r_type)
7932 {
7933 default:
7934 break;
7935
7936 case R_PPC_GOT_TPREL16:
7937 case R_PPC_GOT_TPREL16_LO:
e054468f 7938 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7939 && (tls_mask & TLS_TPREL) == 0)
7940 {
7941 bfd_vma insn;
91d6fa6a 7942
c316a17c
AM
7943 insn = bfd_get_32 (output_bfd,
7944 contents + rel->r_offset - d_offset);
7619e7c7
AM
7945 insn &= 31 << 21;
7946 insn |= 0x3c020000; /* addis 0,2,0 */
c316a17c
AM
7947 bfd_put_32 (output_bfd, insn,
7948 contents + rel->r_offset - d_offset);
7619e7c7
AM
7949 r_type = R_PPC_TPREL16_HA;
7950 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7951 }
7952 break;
7953
7954 case R_PPC_TLS:
e054468f 7955 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7956 && (tls_mask & TLS_TPREL) == 0)
7957 {
2d0f3896
AM
7958 bfd_vma insn;
7959
7619e7c7 7960 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM
7961 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7962 if (insn == 0)
7619e7c7 7963 abort ();
7619e7c7
AM
7964 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7965 r_type = R_PPC_TPREL16_LO;
7966 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 7967
7619e7c7 7968 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
7969 PPC_TPREL16_LO which is at low-order half-word. */
7970 rel->r_offset += d_offset;
7619e7c7
AM
7971 }
7972 break;
7973
7974 case R_PPC_GOT_TLSGD16_HI:
7975 case R_PPC_GOT_TLSGD16_HA:
7976 tls_gd = TLS_TPRELGD;
e054468f 7977 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7619e7c7
AM
7978 goto tls_gdld_hi;
7979 break;
7980
7981 case R_PPC_GOT_TLSLD16_HI:
7982 case R_PPC_GOT_TLSLD16_HA:
e054468f 7983 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7
AM
7984 {
7985 tls_gdld_hi:
7986 if ((tls_mask & tls_gd) != 0)
7987 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7988 + R_PPC_GOT_TPREL16);
7989 else
7990 {
4fe5ca5b 7991 rel->r_offset -= d_offset;
b86ac8e3 7992 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7619e7c7
AM
7993 r_type = R_PPC_NONE;
7994 }
7995 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7996 }
7997 break;
7998
7999 case R_PPC_GOT_TLSGD16:
8000 case R_PPC_GOT_TLSGD16_LO:
8001 tls_gd = TLS_TPRELGD;
e054468f 8002 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 8003 goto tls_ldgd_opt;
7619e7c7
AM
8004 break;
8005
8006 case R_PPC_GOT_TLSLD16:
8007 case R_PPC_GOT_TLSLD16_LO:
e054468f 8008 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7 8009 {
3a71aa26 8010 unsigned int insn1, insn2;
b7fcf6f6 8011 bfd_vma offset;
7619e7c7 8012
b7fcf6f6 8013 tls_ldgd_opt:
727fc41e
AM
8014 offset = (bfd_vma) -1;
8015 /* If not using the newer R_PPC_TLSGD/LD to mark
8016 __tls_get_addr calls, we must trust that the call
8017 stays with its arg setup insns, ie. that the next
8018 reloc is the __tls_get_addr call associated with
8019 the current reloc. Edit both insns. */
8020 if (input_section->has_tls_get_addr_call
8021 && rel + 1 < relend
8022 && branch_reloc_hash_match (input_bfd, rel + 1,
8023 htab->tls_get_addr))
8024 offset = rel[1].r_offset;
b86ac8e3
AM
8025 /* We read the low GOT_TLS insn because we need to keep
8026 the destination reg. It may be something other than
8027 the usual r3, and moved to r3 before the call by
8028 intervening code. */
8029 insn1 = bfd_get_32 (output_bfd,
8030 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
8031 if ((tls_mask & tls_gd) != 0)
8032 {
8033 /* IE */
b86ac8e3 8034 insn1 &= (0x1f << 21) | (0x1f << 16);
b7fcf6f6 8035 insn1 |= 32 << 26; /* lwz */
727fc41e
AM
8036 if (offset != (bfd_vma) -1)
8037 {
f58d5a2d 8038 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
8039 insn2 = 0x7c631214; /* add 3,3,2 */
8040 bfd_put_32 (output_bfd, insn2, contents + offset);
8041 }
b7fcf6f6
AM
8042 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8043 + R_PPC_GOT_TPREL16);
8044 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8045 }
8046 else
8047 {
8048 /* LE */
b86ac8e3
AM
8049 insn1 &= 0x1f << 21;
8050 insn1 |= 0x3c020000; /* addis r,2,0 */
7619e7c7
AM
8051 if (tls_gd == 0)
8052 {
b7fcf6f6 8053 /* Was an LD reloc. */
1d483afe
AM
8054 for (r_symndx = 0;
8055 r_symndx < symtab_hdr->sh_info;
8056 r_symndx++)
8057 if (local_sections[r_symndx] == sec)
8058 break;
8059 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 8060 r_symndx = STN_UNDEF;
b7fcf6f6 8061 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 8062 if (r_symndx != STN_UNDEF)
1d483afe
AM
8063 rel->r_addend -= (local_syms[r_symndx].st_value
8064 + sec->output_offset
8065 + sec->output_section->vma);
7619e7c7 8066 }
b7fcf6f6
AM
8067 r_type = R_PPC_TPREL16_HA;
8068 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM
8069 if (offset != (bfd_vma) -1)
8070 {
8071 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8072 rel[1].r_offset = offset + d_offset;
8073 rel[1].r_addend = rel->r_addend;
8074 insn2 = 0x38630000; /* addi 3,3,0 */
8075 bfd_put_32 (output_bfd, insn2, contents + offset);
8076 }
b7fcf6f6
AM
8077 }
8078 bfd_put_32 (output_bfd, insn1,
8079 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
8080 if (tls_gd == 0)
8081 {
8082 /* We changed the symbol on an LD reloc. Start over
8083 in order to get h, sym, sec etc. right. */
c316a17c 8084 goto again;
7619e7c7 8085 }
252b5132 8086 }
7619e7c7 8087 break;
727fc41e
AM
8088
8089 case R_PPC_TLSGD:
e054468f 8090 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
727fc41e
AM
8091 {
8092 unsigned int insn2;
8093 bfd_vma offset = rel->r_offset;
8094
8095 if ((tls_mask & TLS_TPRELGD) != 0)
8096 {
8097 /* IE */
8098 r_type = R_PPC_NONE;
8099 insn2 = 0x7c631214; /* add 3,3,2 */
8100 }
8101 else
8102 {
8103 /* LE */
8104 r_type = R_PPC_TPREL16_LO;
8105 rel->r_offset += d_offset;
8106 insn2 = 0x38630000; /* addi 3,3,0 */
8107 }
8108 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8109 bfd_put_32 (output_bfd, insn2, contents + offset);
8110 /* Zap the reloc on the _tls_get_addr call too. */
8111 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 8112 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
8113 }
8114 break;
8115
8116 case R_PPC_TLSLD:
e054468f 8117 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
727fc41e
AM
8118 {
8119 unsigned int insn2;
8120
8121 for (r_symndx = 0;
8122 r_symndx < symtab_hdr->sh_info;
8123 r_symndx++)
8124 if (local_sections[r_symndx] == sec)
8125 break;
8126 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 8127 r_symndx = STN_UNDEF;
727fc41e 8128 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 8129 if (r_symndx != STN_UNDEF)
727fc41e
AM
8130 rel->r_addend -= (local_syms[r_symndx].st_value
8131 + sec->output_offset
8132 + sec->output_section->vma);
8133
8134 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8135 rel->r_offset += d_offset;
8136 insn2 = 0x38630000; /* addi 3,3,0 */
8137 bfd_put_32 (output_bfd, insn2,
8138 contents + rel->r_offset - d_offset);
8139 /* Zap the reloc on the _tls_get_addr call too. */
8140 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
f58d5a2d 8141 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
c316a17c 8142 goto again;
727fc41e
AM
8143 }
8144 break;
7619e7c7
AM
8145 }
8146
8147 /* Handle other relocations that tweak non-addend part of insn. */
8148 branch_bit = 0;
8149 switch (r_type)
8150 {
8151 default:
8152 break;
8153
8154 /* Branch taken prediction relocations. */
8155 case R_PPC_ADDR14_BRTAKEN:
8156 case R_PPC_REL14_BRTAKEN:
8157 branch_bit = BRANCH_PREDICT_BIT;
1a0670f3 8158 /* Fall through. */
7619e7c7 8159
4cc11e76 8160 /* Branch not taken prediction relocations. */
7619e7c7
AM
8161 case R_PPC_ADDR14_BRNTAKEN:
8162 case R_PPC_REL14_BRNTAKEN:
91d6fa6a
NC
8163 {
8164 bfd_vma insn;
7619e7c7 8165
91d6fa6a
NC
8166 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8167 insn &= ~BRANCH_PREDICT_BIT;
8168 insn |= branch_bit;
7619e7c7 8169
91d6fa6a
NC
8170 from = (rel->r_offset
8171 + input_section->output_offset
8172 + input_section->output_section->vma);
7619e7c7 8173
91d6fa6a
NC
8174 /* Invert 'y' bit if not the default. */
8175 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8176 insn ^= BRANCH_PREDICT_BIT;
8177
8178 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8179 break;
8180 }
252b5132
RH
8181 }
8182
d3e454b9
AM
8183 if (ELIMINATE_COPY_RELOCS
8184 && h != NULL
8185 && !h->def_regular
8186 && h->protected_def
8187 && ppc_elf_hash_entry (h)->has_addr16_ha
8188 && ppc_elf_hash_entry (h)->has_addr16_lo
8189 && htab->params->pic_fixup > 0)
8190 {
8191 /* Convert lis;addi or lis;load/store accessing a protected
8192 variable defined in a shared library to PIC. */
8193 unsigned int insn;
8194
8195 if (r_type == R_PPC_ADDR16_HA)
8196 {
8197 insn = bfd_get_32 (output_bfd,
8198 contents + rel->r_offset - d_offset);
8199 if ((insn & (0x3f << 26)) == (15u << 26)
8200 && (insn & (0x1f << 16)) == 0 /* lis */)
8201 {
8202 bfd_byte *p;
8203 bfd_vma off;
8204 bfd_vma got_addr;
8205
8206 p = (contents + input_section->size
8207 - relax_info->workaround_size
8208 - relax_info->picfixup_size
8209 + picfixup_size);
8210 off = (p - contents) - (rel->r_offset - d_offset);
8211 if (off > 0x1fffffc || (off & 3) != 0)
8212 info->callbacks->einfo
8213 (_("%P: %H: fixup branch overflow\n"),
8214 input_bfd, input_section, rel->r_offset);
8215
8216 bfd_put_32 (output_bfd, B | off,
8217 contents + rel->r_offset - d_offset);
8218 got_addr = (htab->got->output_section->vma
8219 + htab->got->output_offset
8220 + (h->got.offset & ~1));
c316a17c
AM
8221 wrel->r_offset = (p - contents) + d_offset;
8222 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8223 wrel->r_addend = got_addr;
d3e454b9
AM
8224 insn &= ~0xffff;
8225 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8226 bfd_put_32 (output_bfd, insn, p);
8227
8228 /* Convert lis to lwz, loading address from GOT. */
8229 insn &= ~0xffff;
8230 insn ^= (32u ^ 15u) << 26;
8231 insn |= (insn & (0x1f << 21)) >> 5;
8232 insn |= got_addr & 0xffff;
8233 bfd_put_32 (output_bfd, insn, p + 4);
8234
8235 bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8236 picfixup_size += 12;
8237
8238 /* Use one of the spare relocs, so --emit-relocs
8239 output is reasonable. */
8240 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
c316a17c
AM
8241 wrel++, rel++;
8242 rel->r_offset = wrel[-1].r_offset + 4;
d3e454b9 8243 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
c316a17c 8244 rel->r_addend = wrel[-1].r_addend;
d3e454b9
AM
8245
8246 /* Continue on as if we had a got reloc, to output
8247 dynamic reloc. */
8248 r_type = R_PPC_GOT16_LO;
8249 }
8250 else
8251 info->callbacks->einfo
8252 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8253 input_bfd, input_section, rel->r_offset,
8254 "R_PPC_ADDR16_HA", insn);
8255 }
8256 else if (r_type == R_PPC_ADDR16_LO)
8257 {
8258 insn = bfd_get_32 (output_bfd,
8259 contents + rel->r_offset - d_offset);
8260 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8261 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8262 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8263 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8264 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8265 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8266 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8267 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8268 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8269 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8270 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8271 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8272 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8273 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8274 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8275 && (insn & 3) != 1)
8276 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8277 && ((insn & 3) == 0 || (insn & 3) == 3)))
8278 {
8279 /* Arrange to apply the reloc addend, if any. */
8280 relocation = 0;
8281 unresolved_reloc = FALSE;
8282 rel->r_info = ELF32_R_INFO (0, r_type);
8283 }
8284 else
8285 info->callbacks->einfo
8286 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8287 input_bfd, input_section, rel->r_offset,
8288 "R_PPC_ADDR16_LO", insn);
8289 }
8290 }
8291
e054468f 8292 ifunc = NULL;
25f23106 8293 if (!htab->is_vxworks)
e054468f 8294 {
de972ffa
AM
8295 struct plt_entry *ent;
8296
e054468f
AM
8297 if (h != NULL)
8298 {
8299 if (h->type == STT_GNU_IFUNC)
8300 ifunc = &h->plt.plist;
8301 }
de972ffa
AM
8302 else if (local_got_offsets != NULL
8303 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
e054468f 8304 {
de972ffa 8305 struct plt_entry **local_plt;
e054468f 8306
de972ffa
AM
8307 local_plt = (struct plt_entry **) (local_got_offsets
8308 + symtab_hdr->sh_info);
8309 ifunc = local_plt + r_symndx;
e054468f 8310 }
e054468f 8311
de972ffa
AM
8312 ent = NULL;
8313 if (ifunc != NULL
0e1862bb 8314 && (!bfd_link_pic (info)
de972ffa
AM
8315 || is_branch_reloc (r_type)))
8316 {
8317 addend = 0;
0e1862bb 8318 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
de972ffa
AM
8319 addend = rel->r_addend;
8320 ent = find_plt_ent (ifunc, got2, addend);
8321 }
8322 if (ent != NULL)
8323 {
888a7fc3
AM
8324 if (bfd_link_pic (info)
8325 && ent->sec != got2
8326 && htab->plt_type != PLT_NEW
8327 && (!htab->elf.dynamic_sections_created
8328 || h == NULL
8329 || h->dynindx == -1))
8330 {
8331 /* Uh oh, we are going to create a pic glink stub
8332 for an ifunc (here for h == NULL and later in
8333 finish_dynamic_symbol for h != NULL), and
8334 apparently are using code compiled with
8335 -mbss-plt. The difficulty is that -mbss-plt code
8336 gives no indication via a magic PLTREL24 addend
8337 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8338 is pointing into a .got2 section (and how far
8339 into .got2). */
8340 info->callbacks->einfo
8341 (_("%X%P: %H: unsupported bss-plt -fPIC ifunc %s\n"),
8342 input_bfd, input_section, rel->r_offset, sym_name);
8343 }
e054468f
AM
8344 if (h == NULL && (ent->plt.offset & 1) == 0)
8345 {
8346 Elf_Internal_Rela rela;
8347 bfd_byte *loc;
8348
8349 rela.r_offset = (htab->iplt->output_section->vma
8350 + htab->iplt->output_offset
8351 + ent->plt.offset);
8352 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8353 rela.r_addend = relocation;
25f23106
AM
8354 loc = htab->reliplt->contents;
8355 loc += (htab->reliplt->reloc_count++
8356 * sizeof (Elf32_External_Rela));
e054468f
AM
8357 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8358
8359 ent->plt.offset |= 1;
8360 }
8361 if (h == NULL && (ent->glink_offset & 1) == 0)
8362 {
a7f2871e
AM
8363 unsigned char *p = ((unsigned char *) htab->glink->contents
8364 + ent->glink_offset);
8365 write_glink_stub (ent, htab->iplt, p, info);
e054468f
AM
8366 ent->glink_offset |= 1;
8367 }
8368
8369 unresolved_reloc = FALSE;
8370 if (htab->plt_type == PLT_NEW
8371 || !htab->elf.dynamic_sections_created
c7e17e05
AM
8372 || h == NULL
8373 || h->dynindx == -1)
e054468f
AM
8374 relocation = (htab->glink->output_section->vma
8375 + htab->glink->output_offset
8376 + (ent->glink_offset & ~1));
8377 else
8378 relocation = (htab->plt->output_section->vma
8379 + htab->plt->output_offset
8380 + ent->plt.offset);
8381 }
8382 }
8383
7619e7c7
AM
8384 addend = rel->r_addend;
8385 tls_type = 0;
8386 howto = NULL;
55fd94b0
AM
8387 if (r_type < R_PPC_max)
8388 howto = ppc_elf_howto_table[r_type];
7619e7c7 8389 switch (r_type)
252b5132
RH
8390 {
8391 default:
25f53a85 8392 info->callbacks->einfo
8de848d8 8393 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
d003868e 8394 input_bfd, (int) r_type, sym_name);
252b5132
RH
8395
8396 bfd_set_error (bfd_error_bad_value);
b34976b6 8397 ret = FALSE;
c316a17c 8398 goto copy_reloc;
252b5132 8399
7619e7c7
AM
8400 case R_PPC_NONE:
8401 case R_PPC_TLS:
727fc41e
AM
8402 case R_PPC_TLSGD:
8403 case R_PPC_TLSLD:
7619e7c7
AM
8404 case R_PPC_EMB_MRKREF:
8405 case R_PPC_GNU_VTINHERIT:
8406 case R_PPC_GNU_VTENTRY:
c316a17c 8407 goto copy_reloc;
7595d193 8408
7619e7c7
AM
8409 /* GOT16 relocations. Like an ADDR16 using the symbol's
8410 address in the GOT as relocation value instead of the
8411 symbol's value itself. Also, create a GOT entry for the
8412 symbol and put the symbol value there. */
8413 case R_PPC_GOT_TLSGD16:
8414 case R_PPC_GOT_TLSGD16_LO:
8415 case R_PPC_GOT_TLSGD16_HI:
8416 case R_PPC_GOT_TLSGD16_HA:
8417 tls_type = TLS_TLS | TLS_GD;
8418 goto dogot;
8419
8420 case R_PPC_GOT_TLSLD16:
8421 case R_PPC_GOT_TLSLD16_LO:
8422 case R_PPC_GOT_TLSLD16_HI:
8423 case R_PPC_GOT_TLSLD16_HA:
8424 tls_type = TLS_TLS | TLS_LD;
8425 goto dogot;
8426
8427 case R_PPC_GOT_TPREL16:
8428 case R_PPC_GOT_TPREL16_LO:
8429 case R_PPC_GOT_TPREL16_HI:
8430 case R_PPC_GOT_TPREL16_HA:
8431 tls_type = TLS_TLS | TLS_TPREL;
8432 goto dogot;
8433
8434 case R_PPC_GOT_DTPREL16:
8435 case R_PPC_GOT_DTPREL16_LO:
8436 case R_PPC_GOT_DTPREL16_HI:
8437 case R_PPC_GOT_DTPREL16_HA:
8438 tls_type = TLS_TLS | TLS_DTPREL;
8439 goto dogot;
8440
8441 case R_PPC_GOT16:
8442 case R_PPC_GOT16_LO:
8443 case R_PPC_GOT16_HI:
8444 case R_PPC_GOT16_HA:
727fc41e 8445 tls_mask = 0;
7619e7c7
AM
8446 dogot:
8447 {
8448 /* Relocation is to the entry for this symbol in the global
8449 offset table. */
8450 bfd_vma off;
8451 bfd_vma *offp;
8452 unsigned long indx;
8453
8454 if (htab->got == NULL)
8455 abort ();
8456
8457 indx = 0;
8458 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 8459 && (h == NULL
f5385ebf 8460 || !h->def_dynamic))
7619e7c7
AM
8461 offp = &htab->tlsld_got.offset;
8462 else if (h != NULL)
8463 {
8464 bfd_boolean dyn;
8465 dyn = htab->elf.dynamic_sections_created;
0e1862bb
L
8466 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8467 || (bfd_link_pic (info)
7619e7c7
AM
8468 && SYMBOL_REFERENCES_LOCAL (info, h)))
8469 /* This is actually a static link, or it is a
8470 -Bsymbolic link and the symbol is defined
8471 locally, or the symbol was forced to be local
8472 because of a version file. */
8473 ;
8474 else
8475 {
14acf4dc 8476 BFD_ASSERT (h->dynindx != -1);
7619e7c7
AM
8477 indx = h->dynindx;
8478 unresolved_reloc = FALSE;
8479 }
8480 offp = &h->got.offset;
8481 }
8482 else
8483 {
8484 if (local_got_offsets == NULL)
8485 abort ();
8486 offp = &local_got_offsets[r_symndx];
8487 }
8488
8489 /* The offset must always be a multiple of 4. We use the
8490 least significant bit to record whether we have already
8491 processed this entry. */
8492 off = *offp;
8493 if ((off & 1) != 0)
8494 off &= ~1;
8495 else
8496 {
70bccea4
AM
8497 unsigned int tls_m = (tls_mask
8498 & (TLS_LD | TLS_GD | TLS_DTPREL
8499 | TLS_TPREL | TLS_TPRELGD));
8500
8501 if (offp == &htab->tlsld_got.offset)
8502 tls_m = TLS_LD;
8503 else if (h == NULL
f5385ebf 8504 || !h->def_dynamic)
70bccea4
AM
8505 tls_m &= ~TLS_LD;
8506
8507 /* We might have multiple got entries for this sym.
8508 Initialize them all. */
8509 do
7619e7c7 8510 {
70bccea4
AM
8511 int tls_ty = 0;
8512
8513 if ((tls_m & TLS_LD) != 0)
7619e7c7 8514 {
70bccea4
AM
8515 tls_ty = TLS_TLS | TLS_LD;
8516 tls_m &= ~TLS_LD;
8517 }
8518 else if ((tls_m & TLS_GD) != 0)
8519 {
8520 tls_ty = TLS_TLS | TLS_GD;
8521 tls_m &= ~TLS_GD;
8522 }
8523 else if ((tls_m & TLS_DTPREL) != 0)
8524 {
8525 tls_ty = TLS_TLS | TLS_DTPREL;
8526 tls_m &= ~TLS_DTPREL;
8527 }
8528 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8529 {
8530 tls_ty = TLS_TLS | TLS_TPREL;
8531 tls_m = 0;
7619e7c7 8532 }
7619e7c7 8533
70bccea4 8534 /* Generate relocs for the dynamic linker. */
0e1862bb 8535 if ((bfd_link_pic (info) || indx != 0)
d6e14abc
AM
8536 && (offp == &htab->tlsld_got.offset
8537 || h == NULL
4e795f50
AM
8538 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8539 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 8540 {
91e21fb7 8541 asection *rsec = htab->relgot;
91d6fa6a 8542 bfd_byte * loc;
91e21fb7 8543
0bed072f
AM
8544 if (ifunc != NULL)
8545 rsec = htab->reliplt;
70bccea4
AM
8546 outrel.r_offset = (htab->got->output_section->vma
8547 + htab->got->output_offset
8548 + off);
e515b051 8549 outrel.r_addend = 0;
70bccea4
AM
8550 if (tls_ty & (TLS_LD | TLS_GD))
8551 {
8552 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
8553 if (tls_ty == (TLS_TLS | TLS_GD))
8554 {
25f23106
AM
8555 loc = rsec->contents;
8556 loc += (rsec->reloc_count++
70bccea4
AM
8557 * sizeof (Elf32_External_Rela));
8558 bfd_elf32_swap_reloca_out (output_bfd,
8559 &outrel, loc);
e515b051 8560 outrel.r_offset += 4;
70bccea4
AM
8561 outrel.r_info
8562 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
8563 }
8564 }
8565 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8566 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8567 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8568 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
25f23106 8569 else if (indx != 0)
70bccea4 8570 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
25f23106
AM
8571 else if (ifunc != NULL)
8572 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8573 else
8574 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
d6e14abc 8575 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM
8576 {
8577 outrel.r_addend += relocation;
8578 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
989f9879
AM
8579 {
8580 if (htab->elf.tls_sec == NULL)
8581 outrel.r_addend = 0;
8582 else
8583 outrel.r_addend -= htab->elf.tls_sec->vma;
8584 }
e515b051 8585 }
25f23106
AM
8586 loc = rsec->contents;
8587 loc += (rsec->reloc_count++
70bccea4
AM
8588 * sizeof (Elf32_External_Rela));
8589 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
8590 }
8591
70bccea4
AM
8592 /* Init the .got section contents if we're not
8593 emitting a reloc. */
8594 else
7619e7c7 8595 {
70bccea4
AM
8596 bfd_vma value = relocation;
8597
7b609f53
AM
8598 if (tls_ty == (TLS_TLS | TLS_LD))
8599 value = 1;
8600 else if (tls_ty != 0)
70bccea4 8601 {
989f9879
AM
8602 if (htab->elf.tls_sec == NULL)
8603 value = 0;
8604 else
8605 {
8606 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8607 if (tls_ty == (TLS_TLS | TLS_TPREL))
8608 value += DTP_OFFSET - TP_OFFSET;
8609 }
70bccea4 8610
7b609f53
AM
8611 if (tls_ty == (TLS_TLS | TLS_GD))
8612 {
8613 bfd_put_32 (output_bfd, value,
8614 htab->got->contents + off + 4);
8615 value = 1;
8616 }
70bccea4 8617 }
70bccea4
AM
8618 bfd_put_32 (output_bfd, value,
8619 htab->got->contents + off);
7619e7c7 8620 }
70bccea4
AM
8621
8622 off += 4;
8623 if (tls_ty & (TLS_LD | TLS_GD))
8624 off += 4;
7619e7c7 8625 }
70bccea4
AM
8626 while (tls_m != 0);
8627
8628 off = *offp;
8629 *offp = off | 1;
7619e7c7
AM
8630 }
8631
8632 if (off >= (bfd_vma) -2)
8633 abort ();
8634
70bccea4
AM
8635 if ((tls_type & TLS_TLS) != 0)
8636 {
8637 if (tls_type != (TLS_TLS | TLS_LD))
8638 {
8639 if ((tls_mask & TLS_LD) != 0
8640 && !(h == NULL
f5385ebf 8641 || !h->def_dynamic))
70bccea4
AM
8642 off += 8;
8643 if (tls_type != (TLS_TLS | TLS_GD))
8644 {
8645 if ((tls_mask & TLS_GD) != 0)
8646 off += 8;
8647 if (tls_type != (TLS_TLS | TLS_DTPREL))
8648 {
8649 if ((tls_mask & TLS_DTPREL) != 0)
8650 off += 4;
8651 }
8652 }
8653 }
8654 }
8655
d3e454b9
AM
8656 /* If here for a picfixup, we're done. */
8657 if (r_type != ELF32_R_TYPE (rel->r_info))
c316a17c 8658 goto copy_reloc;
d3e454b9 8659
e87d4038
AM
8660 relocation = (htab->got->output_section->vma
8661 + htab->got->output_offset
8662 + off
8663 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
8664
8665 /* Addends on got relocations don't make much sense.
8666 x+off@got is actually x@got+off, and since the got is
8667 generated by a hash table traversal, the value in the
8668 got at entry m+n bears little relation to the entry m. */
8669 if (addend != 0)
25f53a85 8670 info->callbacks->einfo
8de848d8 8671 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
25f53a85 8672 input_bfd, input_section, rel->r_offset,
7b609f53 8673 howto->name,
7619e7c7
AM
8674 sym_name);
8675 }
86c95733 8676 break;
7619e7c7 8677
86c95733 8678 /* Relocations that need no special processing. */
7619e7c7 8679 case R_PPC_LOCAL24PC:
252b5132
RH
8680 /* It makes no sense to point a local relocation
8681 at a symbol not in this object. */
7b609f53 8682 if (unresolved_reloc)
252b5132 8683 {
1a72702b
AM
8684 (*info->callbacks->undefined_symbol) (info,
8685 h->root.root.string,
8686 input_bfd,
8687 input_section,
8688 rel->r_offset,
8689 TRUE);
c316a17c 8690 goto copy_reloc;
252b5132 8691 }
888a7fc3
AM
8692 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8693 {
8694 /* @local on an ifunc does not really make sense since
8695 the ifunc resolver can take you anywhere. More
8696 seriously, calls to ifuncs must go through a plt call
8697 stub, and for pic the plt call stubs uses r30 to
8698 access the PLT. The problem is that a call that is
8699 local won't have the +32k reloc addend trick marking
8700 -fPIC code, so the linker won't know whether r30 is
8701 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8702 info->callbacks->einfo (_("%X%P: %H: @local call to ifunc %s\n"),
8703 input_bfd, input_section, rel->r_offset,
8704 h->root.root.string);
8705 }
252b5132
RH
8706 break;
8707
7619e7c7
AM
8708 case R_PPC_DTPREL16:
8709 case R_PPC_DTPREL16_LO:
8710 case R_PPC_DTPREL16_HI:
8711 case R_PPC_DTPREL16_HA:
989f9879
AM
8712 if (htab->elf.tls_sec != NULL)
8713 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8714 break;
8715
70bccea4
AM
8716 /* Relocations that may need to be propagated if this is a shared
8717 object. */
7619e7c7
AM
8718 case R_PPC_TPREL16:
8719 case R_PPC_TPREL16_LO:
8720 case R_PPC_TPREL16_HI:
8721 case R_PPC_TPREL16_HA:
766bc656
AM
8722 if (h != NULL
8723 && h->root.type == bfd_link_hash_undefweak
8724 && h->dynindx == -1)
8725 {
8726 /* Make this relocation against an undefined weak symbol
8727 resolve to zero. This is really just a tweak, since
8728 code using weak externs ought to check that they are
8729 defined before using them. */
8730 bfd_byte *p = contents + rel->r_offset - d_offset;
8731 unsigned int insn = bfd_get_32 (output_bfd, p);
8732 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8733 if (insn != 0)
8734 bfd_put_32 (output_bfd, insn, p);
8735 break;
8736 }
989f9879
AM
8737 if (htab->elf.tls_sec != NULL)
8738 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8739 /* The TPREL16 relocs shouldn't really be used in shared
8740 libs as they will result in DT_TEXTREL being set, but
8741 support them anyway. */
8742 goto dodyn;
8743
8744 case R_PPC_TPREL32:
989f9879
AM
8745 if (htab->elf.tls_sec != NULL)
8746 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8747 goto dodyn;
8748
8749 case R_PPC_DTPREL32:
989f9879
AM
8750 if (htab->elf.tls_sec != NULL)
8751 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8752 goto dodyn;
8753
e515b051
AM
8754 case R_PPC_DTPMOD32:
8755 relocation = 1;
8756 addend = 0;
8757 goto dodyn;
8758
d7128ce4
AM
8759 case R_PPC_REL16:
8760 case R_PPC_REL16_LO:
8761 case R_PPC_REL16_HI:
8762 case R_PPC_REL16_HA:
a680de9a 8763 case R_PPC_REL16DX_HA:
d7128ce4
AM
8764 break;
8765
7619e7c7 8766 case R_PPC_REL32:
625af618
AM
8767 if (h == NULL || h == htab->elf.hgot)
8768 break;
8769 /* fall through */
8770
8771 case R_PPC_ADDR32:
8772 case R_PPC_ADDR16:
8773 case R_PPC_ADDR16_LO:
8774 case R_PPC_ADDR16_HI:
8775 case R_PPC_ADDR16_HA:
8776 case R_PPC_UADDR32:
8777 case R_PPC_UADDR16:
8778 goto dodyn;
8779
b9c361e0
JL
8780 case R_PPC_VLE_REL8:
8781 case R_PPC_VLE_REL15:
8782 case R_PPC_VLE_REL24:
625af618 8783 case R_PPC_REL24:
7619e7c7
AM
8784 case R_PPC_REL14:
8785 case R_PPC_REL14_BRTAKEN:
8786 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
8787 /* If these relocations are not to a named symbol, they can be
8788 handled right here, no need to bother the dynamic linker. */
89200bf8 8789 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 8790 || h == htab->elf.hgot)
252b5132 8791 break;
70bccea4 8792 /* fall through */
252b5132 8793
7619e7c7 8794 case R_PPC_ADDR24:
7619e7c7
AM
8795 case R_PPC_ADDR14:
8796 case R_PPC_ADDR14_BRTAKEN:
8797 case R_PPC_ADDR14_BRNTAKEN:
0e1862bb 8798 if (h != NULL && !bfd_link_pic (info))
625af618
AM
8799 break;
8800 /* fall through */
8801
7619e7c7 8802 dodyn:
3348747a
NS
8803 if ((input_section->flags & SEC_ALLOC) == 0
8804 || is_vxworks_tls)
c87b5a93 8805 break;
c87b5a93 8806
0e1862bb 8807 if ((bfd_link_pic (info)
89200bf8
AM
8808 && !(h != NULL
8809 && ((h->root.type == bfd_link_hash_undefined
8810 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8811 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8812 || (h->root.type == bfd_link_hash_undefweak
8813 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 8814 && (must_be_dyn_reloc (info, r_type)
f6c52c13 8815 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe 8816 || (ELIMINATE_COPY_RELOCS
0e1862bb 8817 && !bfd_link_pic (info)
ee05f2fe
AM
8818 && h != NULL
8819 && h->dynindx != -1
f5385ebf 8820 && !h->non_got_ref
d3e454b9
AM
8821 && !h->def_regular
8822 && !(h->protected_def
8823 && ppc_elf_hash_entry (h)->has_addr16_ha
8824 && ppc_elf_hash_entry (h)->has_addr16_lo
8825 && htab->params->pic_fixup > 0)))
252b5132 8826 {
0bb2d96a 8827 int skip;
f95f8542
AM
8828 bfd_byte *loc;
8829 asection *sreloc;
252b5132 8830#ifdef DEBUG
55fd94b0
AM
8831 fprintf (stderr, "ppc_elf_relocate_section needs to "
8832 "create relocation for %s\n",
70bccea4
AM
8833 (h && h->root.root.string
8834 ? h->root.root.string : "<unknown>"));
252b5132
RH
8835#endif
8836
8837 /* When generating a shared object, these relocations
70bccea4
AM
8838 are copied into the output file to be resolved at run
8839 time. */
f95f8542
AM
8840 sreloc = elf_section_data (input_section)->sreloc;
8841 if (ifunc)
8842 sreloc = htab->reliplt;
252b5132 8843 if (sreloc == NULL)
f95f8542 8844 return FALSE;
252b5132 8845
0bb2d96a 8846 skip = 0;
5b914448
AM
8847 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8848 input_section,
8849 rel->r_offset);
0bb2d96a
JJ
8850 if (outrel.r_offset == (bfd_vma) -1
8851 || outrel.r_offset == (bfd_vma) -2)
8852 skip = (int) outrel.r_offset;
252b5132
RH
8853 outrel.r_offset += (input_section->output_section->vma
8854 + input_section->output_offset);
8855
8856 if (skip)
8857 memset (&outrel, 0, sizeof outrel);
89200bf8
AM
8858 else if ((h != NULL
8859 && (h->root.type == bfd_link_hash_undefined
8860 || h->root.type == bfd_link_hash_undefweak))
8861 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 8862 {
14acf4dc 8863 BFD_ASSERT (h->dynindx != -1);
7619e7c7 8864 unresolved_reloc = FALSE;
252b5132
RH
8865 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8866 outrel.r_addend = rel->r_addend;
8867 }
8868 else
8869 {
47388f4c
AM
8870 outrel.r_addend = relocation + rel->r_addend;
8871
25f23106 8872 if (r_type != R_PPC_ADDR32)
252b5132 8873 {
89200bf8 8874 long indx = 0;
252b5132 8875
25f23106
AM
8876 if (ifunc != NULL)
8877 {
8878 /* If we get here when building a static
8879 executable, then the libc startup function
8880 responsible for applying indirect function
8881 relocations is going to complain about
8882 the reloc type.
8883 If we get here when building a dynamic
8884 executable, it will be because we have
8885 a text relocation. The dynamic loader
8886 will set the text segment writable and
8887 non-executable to apply text relocations.
8888 So we'll segfault when trying to run the
8889 indirection function to resolve the reloc. */
25f53a85 8890 info->callbacks->einfo
8de848d8 8891 (_("%P: %H: relocation %s for indirect "
25f53a85
AM
8892 "function %s unsupported\n"),
8893 input_bfd, input_section, rel->r_offset,
25f23106
AM
8894 howto->name,
8895 sym_name);
8896 ret = FALSE;
8897 }
cf35638d 8898 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
89200bf8 8899 ;
252b5132
RH
8900 else if (sec == NULL || sec->owner == NULL)
8901 {
8902 bfd_set_error (bfd_error_bad_value);
89200bf8 8903 ret = FALSE;
252b5132
RH
8904 }
8905 else
8906 {
8907 asection *osec;
8908
47388f4c
AM
8909 /* We are turning this relocation into one
8910 against a section symbol. It would be
8911 proper to subtract the symbol's value,
8912 osec->vma, from the emitted reloc addend,
25f23106
AM
8913 but ld.so expects buggy relocs.
8914 FIXME: Why not always use a zero index? */
252b5132
RH
8915 osec = sec->output_section;
8916 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
8917 if (indx == 0)
8918 {
8919 osec = htab->elf.text_index_section;
8920 indx = elf_section_data (osec)->dynindx;
8921 }
8922 BFD_ASSERT (indx != 0);
252b5132 8923#ifdef DEBUG
74541ad4 8924 if (indx == 0)
e460dd0d 8925 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
8926 indx, osec->name, osec->flags,
8927 h->root.root.string);
252b5132
RH
8928#endif
8929 }
8930
8931 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132 8932 }
25f23106
AM
8933 else if (ifunc != NULL)
8934 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8935 else
8936 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
8937 }
8938
947216bf
AM
8939 loc = sreloc->contents;
8940 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8941 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 8942
2243deae 8943 if (skip == -1)
c316a17c 8944 goto copy_reloc;
2243deae
L
8945
8946 /* This reloc will be computed at runtime. We clear the memory
8947 so that it contains predictable value. */
8948 if (! skip
8949 && ((input_section->flags & SEC_ALLOC) != 0
8950 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8951 {
8952 relocation = howto->pc_relative ? outrel.r_offset : 0;
8953 addend = 0;
8954 break;
8955 }
252b5132 8956 }
252b5132
RH
8957 break;
8958
32af9f6e
AM
8959 case R_PPC_RELAX_PLT:
8960 case R_PPC_RELAX_PLTREL24:
de972ffa
AM
8961 if (h != NULL)
8962 {
32af9f6e
AM
8963 struct plt_entry *ent;
8964 bfd_vma got2_addend = 0;
8965
8966 if (r_type == R_PPC_RELAX_PLTREL24)
8967 {
0e1862bb 8968 if (bfd_link_pic (info))
32af9f6e
AM
8969 got2_addend = addend;
8970 addend = 0;
8971 }
8972 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
de972ffa
AM
8973 if (htab->plt_type == PLT_NEW)
8974 relocation = (htab->glink->output_section->vma
8975 + htab->glink->output_offset
8976 + ent->glink_offset);
8977 else
8978 relocation = (htab->plt->output_section->vma
8979 + htab->plt->output_offset
8980 + ent->plt.offset);
8981 }
1a0670f3 8982 /* Fall through. */
b4a38de6 8983
32af9f6e 8984 case R_PPC_RELAX:
9abc968f 8985 {
53291d1f
AM
8986 const int *stub;
8987 size_t size;
8988 size_t insn_offset = rel->r_offset;
8989 unsigned int insn;
9abc968f 8990
0e1862bb 8991 if (bfd_link_pic (info))
53291d1f
AM
8992 {
8993 relocation -= (input_section->output_section->vma
8994 + input_section->output_offset
8995 + rel->r_offset - 4);
8996 stub = shared_stub_entry;
8997 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8998 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8999 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
9000 stub += 3;
9001 size = ARRAY_SIZE (shared_stub_entry) - 3;
9002 }
9003 else
9004 {
9005 stub = stub_entry;
9006 size = ARRAY_SIZE (stub_entry);
9007 }
9abc968f 9008
9abc968f 9009 relocation += addend;
0e1862bb 9010 if (bfd_link_relocatable (info))
53291d1f
AM
9011 relocation = 0;
9012
9013 /* First insn is HA, second is LO. */
9014 insn = *stub++;
9015 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9016 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9017 insn_offset += 4;
9018
9019 insn = *stub++;
9020 insn |= relocation & 0xffff;
9021 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9022 insn_offset += 4;
9023 size -= 2;
9024
9025 while (size != 0)
9026 {
9027 insn = *stub++;
9028 --size;
9029 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9030 insn_offset += 4;
9031 }
9bc4e62b
NS
9032
9033 /* Rewrite the reloc and convert one of the trailing nop
9034 relocs to describe this relocation. */
9035 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9036 /* The relocs are at the bottom 2 bytes */
c316a17c
AM
9037 wrel->r_offset = rel->r_offset + d_offset;
9038 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9039 wrel->r_addend = rel->r_addend;
9040 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9041 wrel++, rel++;
9042 wrel->r_offset += 4;
9043 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9abc968f 9044 }
8517fae7 9045 continue;
deaaf2f3 9046
70bccea4 9047 /* Indirect .sdata relocation. */
7619e7c7 9048 case R_PPC_EMB_SDAI16:
c9a2f333 9049 BFD_ASSERT (htab->sdata[0].section != NULL);
bd6c6e2b
AM
9050 if (!is_static_defined (htab->sdata[0].sym))
9051 {
9052 unresolved_reloc = TRUE;
9053 break;
9054 }
7619e7c7 9055 relocation
76750a2f
AM
9056 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9057 h, relocation, rel);
bd6c6e2b 9058 addend = 0;
252b5132
RH
9059 break;
9060
70bccea4 9061 /* Indirect .sdata2 relocation. */
7619e7c7 9062 case R_PPC_EMB_SDA2I16:
c9a2f333 9063 BFD_ASSERT (htab->sdata[1].section != NULL);
bd6c6e2b
AM
9064 if (!is_static_defined (htab->sdata[1].sym))
9065 {
9066 unresolved_reloc = TRUE;
9067 break;
9068 }
7619e7c7 9069 relocation
76750a2f
AM
9070 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9071 h, relocation, rel);
bd6c6e2b 9072 addend = 0;
252b5132
RH
9073 break;
9074
70bccea4
AM
9075 /* Handle the TOC16 reloc. We want to use the offset within the .got
9076 section, not the actual VMA. This is appropriate when generating
9077 an embedded ELF object, for which the .got section acts like the
9078 AIX .toc section. */
7619e7c7 9079 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
9080 if (sec == NULL || sec->output_section == NULL)
9081 {
9082 unresolved_reloc = TRUE;
9083 break;
9084 }
a0f49396
NC
9085 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9086 ".got") == 0
9087 || strcmp (bfd_get_section_name (sec->owner, sec),
9088 ".cgot") == 0);
252b5132 9089
3b4f3a11 9090 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
9091 break;
9092
7619e7c7 9093 case R_PPC_PLTREL24:
f75e0e33
AM
9094 if (h != NULL && ifunc == NULL)
9095 {
cbf95972
AM
9096 struct plt_entry *ent;
9097
9098 ent = find_plt_ent (&h->plt.plist, got2,
9099 bfd_link_pic (info) ? addend : 0);
f75e0e33
AM
9100 if (ent == NULL
9101 || htab->plt == NULL)
9102 {
9103 /* We didn't make a PLT entry for this symbol. This
9104 happens when statically linking PIC code, or when
9105 using -Bsymbolic. */
9106 }
9107 else
9108 {
9109 /* Relocation is to the entry for this symbol in the
9110 procedure linkage table. */
9111 unresolved_reloc = FALSE;
9112 if (htab->plt_type == PLT_NEW)
9113 relocation = (htab->glink->output_section->vma
9114 + htab->glink->output_offset
9115 + ent->glink_offset);
9116 else
9117 relocation = (htab->plt->output_section->vma
9118 + htab->plt->output_offset
9119 + ent->plt.offset);
9120 }
9121 }
252b5132 9122
f75e0e33
AM
9123 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9124 addend specifies the GOT pointer offset within .got2.
9125 Don't apply it to the relocation field. */
9126 addend = 0;
8da6118f 9127 break;
252b5132 9128
70bccea4 9129 /* Relocate against _SDA_BASE_. */
7619e7c7 9130 case R_PPC_SDAREL16:
252b5132
RH
9131 {
9132 const char *name;
bd6c6e2b 9133 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
252b5132 9134
bd6c6e2b
AM
9135 if (sec == NULL
9136 || sec->output_section == NULL
9137 || !is_static_defined (sda))
3b4f3a11
AM
9138 {
9139 unresolved_reloc = TRUE;
9140 break;
9141 }
bd6c6e2b 9142 addend -= SYM_VAL (sda);
3b4f3a11 9143
a0f49396 9144 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9145 if (!(strcmp (name, ".sdata") == 0
9146 || strcmp (name, ".sbss") == 0))
252b5132 9147 {
25f53a85 9148 info->callbacks->einfo
8de848d8 9149 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9150 "in the wrong output section (%s)\n"),
d003868e 9151 input_bfd,
55fd94b0
AM
9152 sym_name,
9153 howto->name,
9154 name);
252b5132 9155 }
252b5132
RH
9156 }
9157 break;
9158
70bccea4 9159 /* Relocate against _SDA2_BASE_. */
7619e7c7 9160 case R_PPC_EMB_SDA2REL:
252b5132
RH
9161 {
9162 const char *name;
bd6c6e2b 9163 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
252b5132 9164
bd6c6e2b
AM
9165 if (sec == NULL
9166 || sec->output_section == NULL
9167 || !is_static_defined (sda))
3b4f3a11
AM
9168 {
9169 unresolved_reloc = TRUE;
9170 break;
9171 }
bd6c6e2b 9172 addend -= SYM_VAL (sda);
3b4f3a11 9173
a0f49396 9174 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9175 if (!(strcmp (name, ".sdata2") == 0
9176 || strcmp (name, ".sbss2") == 0))
252b5132 9177 {
25f53a85 9178 info->callbacks->einfo
8de848d8 9179 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9180 "in the wrong output section (%s)\n"),
d003868e 9181 input_bfd,
55fd94b0
AM
9182 sym_name,
9183 howto->name,
9184 name);
252b5132 9185 }
252b5132
RH
9186 }
9187 break;
9188
b9c361e0 9189 case R_PPC_VLE_LO16A:
86c95733
AM
9190 relocation = relocation + addend;
9191 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9192 relocation, split16a_type);
c316a17c 9193 goto copy_reloc;
b9c361e0
JL
9194
9195 case R_PPC_VLE_LO16D:
86c95733
AM
9196 relocation = relocation + addend;
9197 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9198 relocation, split16d_type);
c316a17c 9199 goto copy_reloc;
b9c361e0
JL
9200
9201 case R_PPC_VLE_HI16A:
86c95733
AM
9202 relocation = (relocation + addend) >> 16;
9203 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9204 relocation, split16a_type);
c316a17c 9205 goto copy_reloc;
b9c361e0
JL
9206
9207 case R_PPC_VLE_HI16D:
86c95733
AM
9208 relocation = (relocation + addend) >> 16;
9209 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9210 relocation, split16d_type);
c316a17c 9211 goto copy_reloc;
b9c361e0
JL
9212
9213 case R_PPC_VLE_HA16A:
86c95733
AM
9214 relocation = (relocation + addend + 0x8000) >> 16;
9215 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9216 relocation, split16a_type);
c316a17c 9217 goto copy_reloc;
b9c361e0
JL
9218
9219 case R_PPC_VLE_HA16D:
86c95733
AM
9220 relocation = (relocation + addend + 0x8000) >> 16;
9221 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9222 relocation, split16d_type);
c316a17c 9223 goto copy_reloc;
b9c361e0 9224
70bccea4 9225 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7 9226 case R_PPC_EMB_SDA21:
b9c361e0 9227 case R_PPC_VLE_SDA21:
7619e7c7 9228 case R_PPC_EMB_RELSDA:
b9c361e0 9229 case R_PPC_VLE_SDA21_LO:
252b5132
RH
9230 {
9231 const char *name;
9232 int reg;
86c95733 9233 unsigned int insn;
bd6c6e2b 9234 struct elf_link_hash_entry *sda = NULL;
252b5132 9235
3b4f3a11
AM
9236 if (sec == NULL || sec->output_section == NULL)
9237 {
9238 unresolved_reloc = TRUE;
9239 break;
9240 }
9241
a0f49396 9242 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9243 if (strcmp (name, ".sdata") == 0
9244 || strcmp (name, ".sbss") == 0)
252b5132
RH
9245 {
9246 reg = 13;
bd6c6e2b 9247 sda = htab->sdata[0].sym;
252b5132 9248 }
93d1b056
AM
9249 else if (strcmp (name, ".sdata2") == 0
9250 || strcmp (name, ".sbss2") == 0)
252b5132
RH
9251 {
9252 reg = 2;
bd6c6e2b 9253 sda = htab->sdata[1].sym;
252b5132 9254 }
8da6118f
KH
9255 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9256 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
9257 {
9258 reg = 0;
9259 }
252b5132
RH
9260 else
9261 {
25f53a85 9262 info->callbacks->einfo
8de848d8 9263 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9264 "in the wrong output section (%s)\n"),
d003868e 9265 input_bfd,
55fd94b0
AM
9266 sym_name,
9267 howto->name,
9268 name);
252b5132
RH
9269
9270 bfd_set_error (bfd_error_bad_value);
b34976b6 9271 ret = FALSE;
c316a17c 9272 goto copy_reloc;
252b5132
RH
9273 }
9274
bd6c6e2b
AM
9275 if (sda != NULL)
9276 {
9277 if (!is_static_defined (sda))
9278 {
9279 unresolved_reloc = TRUE;
9280 break;
9281 }
9282 addend -= SYM_VAL (sda);
9283 }
9284
86c95733 9285 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
b9c361e0
JL
9286 if (reg == 0
9287 && (r_type == R_PPC_VLE_SDA21
9288 || r_type == R_PPC_VLE_SDA21_LO))
9289 {
86c95733
AM
9290 relocation = relocation + addend;
9291 addend = 0;
9292
9293 /* Force e_li insn, keeping RT from original insn. */
9294 insn &= 0x1f << 21;
9295 insn |= 28u << 26;
9296
9297 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9298 /* Top 4 bits of value to 17..20. */
9299 insn |= (relocation & 0xf0000) >> 5;
9300 /* Next 5 bits of the value to 11..15. */
9301 insn |= (relocation & 0xf800) << 5;
9302 /* And the final 11 bits of the value to bits 21 to 31. */
9303 insn |= relocation & 0x7ff;
9304
c3301df1
AM
9305 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9306
9307 if (r_type == R_PPC_VLE_SDA21
9308 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9309 goto overflow;
c316a17c 9310 goto copy_reloc;
b9c361e0
JL
9311 }
9312 else if (r_type == R_PPC_EMB_SDA21
9313 || r_type == R_PPC_VLE_SDA21
9314 || r_type == R_PPC_VLE_SDA21_LO)
91d6fa6a 9315 {
86c95733 9316 /* Fill in register field. */
252b5132 9317 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
252b5132 9318 }
86c95733 9319 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
9320 }
9321 break;
9322
b9c361e0
JL
9323 case R_PPC_VLE_SDAREL_LO16A:
9324 case R_PPC_VLE_SDAREL_LO16D:
9325 case R_PPC_VLE_SDAREL_HI16A:
9326 case R_PPC_VLE_SDAREL_HI16D:
9327 case R_PPC_VLE_SDAREL_HA16A:
9328 case R_PPC_VLE_SDAREL_HA16D:
9329 {
9330 bfd_vma value;
9331 const char *name;
9332 //int reg;
9333 struct elf_link_hash_entry *sda = NULL;
9334
9335 if (sec == NULL || sec->output_section == NULL)
9336 {
9337 unresolved_reloc = TRUE;
9338 break;
9339 }
9340
a0f49396 9341 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9342 if (strcmp (name, ".sdata") == 0
9343 || strcmp (name, ".sbss") == 0)
b9c361e0
JL
9344 {
9345 //reg = 13;
9346 sda = htab->sdata[0].sym;
9347 }
93d1b056
AM
9348 else if (strcmp (name, ".sdata2") == 0
9349 || strcmp (name, ".sbss2") == 0)
b9c361e0
JL
9350 {
9351 //reg = 2;
9352 sda = htab->sdata[1].sym;
9353 }
9354 else
9355 {
4eca0228 9356 _bfd_error_handler
b9c361e0
JL
9357 (_("%B: the target (%s) of a %s relocation is "
9358 "in the wrong output section (%s)"),
9359 input_bfd,
9360 sym_name,
9361 howto->name,
9362 name);
9363
9364 bfd_set_error (bfd_error_bad_value);
9365 ret = FALSE;
c316a17c 9366 goto copy_reloc;
b9c361e0
JL
9367 }
9368
9369 if (sda != NULL)
9370 {
9371 if (!is_static_defined (sda))
9372 {
9373 unresolved_reloc = TRUE;
9374 break;
9375 }
9376 }
9377
86c95733
AM
9378 value = (sda->root.u.def.section->output_section->vma
9379 + sda->root.u.def.section->output_offset
9380 + addend);
9381
9382 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9383 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9384 value, split16a_type);
9385 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9386 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9387 value, split16d_type);
9388 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
b9c361e0 9389 {
86c95733
AM
9390 value = value >> 16;
9391 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9392 value, split16a_type);
b9c361e0 9393 }
86c95733 9394 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
b9c361e0 9395 {
86c95733
AM
9396 value = value >> 16;
9397 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9398 value, split16d_type);
b9c361e0 9399 }
86c95733 9400 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
b9c361e0 9401 {
86c95733
AM
9402 value = (value + 0x8000) >> 16;
9403 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9404 value, split16a_type);
b9c361e0 9405 }
86c95733 9406 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
b9c361e0 9407 {
86c95733
AM
9408 value = (value + 0x8000) >> 16;
9409 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9410 value, split16d_type);
b9c361e0
JL
9411 }
9412 }
c316a17c 9413 goto copy_reloc;
b9c361e0 9414
70bccea4 9415 /* Relocate against the beginning of the section. */
7619e7c7
AM
9416 case R_PPC_SECTOFF:
9417 case R_PPC_SECTOFF_LO:
9418 case R_PPC_SECTOFF_HI:
9419 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
9420 if (sec == NULL || sec->output_section == NULL)
9421 {
9422 unresolved_reloc = TRUE;
9423 break;
9424 }
252b5132 9425 addend -= sec->output_section->vma;
252b5132
RH
9426 break;
9427
70bccea4 9428 /* Negative relocations. */
7619e7c7
AM
9429 case R_PPC_EMB_NADDR32:
9430 case R_PPC_EMB_NADDR16:
9431 case R_PPC_EMB_NADDR16_LO:
9432 case R_PPC_EMB_NADDR16_HI:
9433 case R_PPC_EMB_NADDR16_HA:
8da6118f 9434 addend -= 2 * relocation;
252b5132
RH
9435 break;
9436
7619e7c7
AM
9437 case R_PPC_COPY:
9438 case R_PPC_GLOB_DAT:
9439 case R_PPC_JMP_SLOT:
9440 case R_PPC_RELATIVE:
e054468f 9441 case R_PPC_IRELATIVE:
7619e7c7
AM
9442 case R_PPC_PLT32:
9443 case R_PPC_PLTREL32:
9444 case R_PPC_PLT16_LO:
9445 case R_PPC_PLT16_HI:
9446 case R_PPC_PLT16_HA:
9447 case R_PPC_ADDR30:
9448 case R_PPC_EMB_RELSEC16:
9449 case R_PPC_EMB_RELST_LO:
9450 case R_PPC_EMB_RELST_HI:
9451 case R_PPC_EMB_RELST_HA:
9452 case R_PPC_EMB_BIT_FLD:
25f53a85 9453 info->callbacks->einfo
8de848d8 9454 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
d003868e 9455 input_bfd,
7619e7c7
AM
9456 howto->name,
9457 sym_name);
252b5132
RH
9458
9459 bfd_set_error (bfd_error_invalid_operation);
b34976b6 9460 ret = FALSE;
c316a17c 9461 goto copy_reloc;
7619e7c7 9462 }
252b5132 9463
7619e7c7
AM
9464 /* Do any further special processing. */
9465 switch (r_type)
9466 {
9467 default:
9468 break;
9469
9470 case R_PPC_ADDR16_HA:
d7128ce4 9471 case R_PPC_REL16_HA:
a680de9a 9472 case R_PPC_REL16DX_HA:
7619e7c7
AM
9473 case R_PPC_SECTOFF_HA:
9474 case R_PPC_TPREL16_HA:
9475 case R_PPC_DTPREL16_HA:
7619e7c7
AM
9476 case R_PPC_EMB_NADDR16_HA:
9477 case R_PPC_EMB_RELST_HA:
9478 /* It's just possible that this symbol is a weak symbol
7b609f53 9479 that's not actually defined anywhere. In that case,
7619e7c7
AM
9480 'sec' would be NULL, and we should leave the symbol
9481 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
9482 if (sec == NULL)
9483 break;
1a0670f3 9484 /* Fall through. */
5c5f6e17
AM
9485
9486 case R_PPC_PLT16_HA:
9487 case R_PPC_GOT16_HA:
9488 case R_PPC_GOT_TLSGD16_HA:
9489 case R_PPC_GOT_TLSLD16_HA:
9490 case R_PPC_GOT_TPREL16_HA:
9491 case R_PPC_GOT_DTPREL16_HA:
9492 /* Add 0x10000 if sign bit in 0:15 is set.
9493 Bits 0:15 are not used. */
9494 addend += 0x8000;
7619e7c7 9495 break;
1fe532cf
AM
9496
9497 case R_PPC_ADDR16:
9498 case R_PPC_ADDR16_LO:
9499 case R_PPC_GOT16:
9500 case R_PPC_GOT16_LO:
9501 case R_PPC_SDAREL16:
9502 case R_PPC_SECTOFF:
9503 case R_PPC_SECTOFF_LO:
9504 case R_PPC_DTPREL16:
9505 case R_PPC_DTPREL16_LO:
9506 case R_PPC_TPREL16:
9507 case R_PPC_TPREL16_LO:
9508 case R_PPC_GOT_TLSGD16:
9509 case R_PPC_GOT_TLSGD16_LO:
9510 case R_PPC_GOT_TLSLD16:
9511 case R_PPC_GOT_TLSLD16_LO:
9512 case R_PPC_GOT_DTPREL16:
9513 case R_PPC_GOT_DTPREL16_LO:
9514 case R_PPC_GOT_TPREL16:
9515 case R_PPC_GOT_TPREL16_LO:
9516 {
9517 /* The 32-bit ABI lacks proper relocations to deal with
9518 certain 64-bit instructions. Prevent damage to bits
9519 that make up part of the insn opcode. */
9520 unsigned int insn, mask, lobit;
9521
c316a17c
AM
9522 insn = bfd_get_32 (output_bfd,
9523 contents + rel->r_offset - d_offset);
1fe532cf
AM
9524 mask = 0;
9525 if (is_insn_ds_form (insn))
9526 mask = 3;
9527 else if (is_insn_dq_form (insn))
9528 mask = 15;
9529 else
9530 break;
a680de9a
PB
9531 relocation += addend;
9532 addend = insn & mask;
9533 lobit = mask & relocation;
1fe532cf
AM
9534 if (lobit != 0)
9535 {
a680de9a 9536 relocation ^= lobit;
1fe532cf
AM
9537 info->callbacks->einfo
9538 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9539 input_bfd, input_section, rel->r_offset,
9540 howto->name, sym_name, mask + 1);
9541 bfd_set_error (bfd_error_bad_value);
9542 ret = FALSE;
9543 }
1fe532cf
AM
9544 }
9545 break;
252b5132
RH
9546 }
9547
252b5132 9548#ifdef DEBUG
55fd94b0
AM
9549 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9550 "offset = %ld, addend = %ld\n",
252b5132 9551 howto->name,
8da6118f 9552 (int) r_type,
252b5132
RH
9553 sym_name,
9554 r_symndx,
7619e7c7 9555 (long) rel->r_offset,
8da6118f 9556 (long) addend);
252b5132
RH
9557#endif
9558
7619e7c7
AM
9559 if (unresolved_reloc
9560 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
9561 && h->def_dynamic)
9562 && _bfd_elf_section_offset (output_bfd, info, input_section,
9563 rel->r_offset) != (bfd_vma) -1)
7619e7c7 9564 {
25f53a85 9565 info->callbacks->einfo
8de848d8 9566 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
25f53a85 9567 input_bfd, input_section, rel->r_offset,
7b609f53 9568 howto->name,
7619e7c7
AM
9569 sym_name);
9570 ret = FALSE;
9571 }
9572
86c95733
AM
9573 /* 16-bit fields in insns mostly have signed values, but a
9574 few insns have 16-bit unsigned values. Really, we should
9575 have different reloc types. */
9576 if (howto->complain_on_overflow != complain_overflow_dont
9577 && howto->dst_mask == 0xffff
9578 && (input_section->flags & SEC_CODE) != 0)
9579 {
9580 enum complain_overflow complain = complain_overflow_signed;
9581
9582 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9583 {
9584 unsigned int insn;
9585
9586 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM
9587 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9588 complain = complain_overflow_bitfield;
9589 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9590 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9591 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
86c95733
AM
9592 complain = complain_overflow_unsigned;
9593 }
9594 if (howto->complain_on_overflow != complain)
9595 {
9596 alt_howto = *howto;
9597 alt_howto.complain_on_overflow = complain;
9598 howto = &alt_howto;
9599 }
9600 }
9601
a680de9a
PB
9602 if (r_type == R_PPC_REL16DX_HA)
9603 {
9604 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9605 if (rel->r_offset + 4 > input_section->size)
9606 r = bfd_reloc_outofrange;
9607 else
9608 {
9609 unsigned int insn;
9610
9611 relocation += addend;
9612 relocation -= (rel->r_offset
9613 + input_section->output_offset
9614 + input_section->output_section->vma);
9615 relocation >>= 16;
9616 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9617 insn &= ~0x1fffc1;
9618 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9619 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9620 r = bfd_reloc_ok;
9621 }
9622 }
9623 else
9624 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9625 rel->r_offset, relocation, addend);
252b5132 9626
7619e7c7 9627 if (r != bfd_reloc_ok)
252b5132 9628 {
7619e7c7 9629 if (r == bfd_reloc_overflow)
252b5132 9630 {
c3301df1 9631 overflow:
8131c122
AM
9632 /* On code like "if (foo) foo();" don't report overflow
9633 on a branch to zero when foo is undefined. */
9634 if (!warned
9635 && !(h != NULL
9636 && (h->root.type == bfd_link_hash_undefweak
9637 || h->root.type == bfd_link_hash_undefined)
9638 && is_branch_reloc (r_type)))
1a72702b
AM
9639 info->callbacks->reloc_overflow
9640 (info, (h ? &h->root : NULL), sym_name, howto->name,
9641 rel->r_addend, input_bfd, input_section, rel->r_offset);
dc1bc0c9
RH
9642 }
9643 else
9644 {
25f53a85 9645 info->callbacks->einfo
8de848d8 9646 (_("%P: %H: %s reloc against `%s': error %d\n"),
25f53a85
AM
9647 input_bfd, input_section, rel->r_offset,
9648 howto->name, sym_name, (int) r);
7619e7c7 9649 ret = FALSE;
252b5132
RH
9650 }
9651 }
c316a17c
AM
9652 copy_reloc:
9653 if (wrel != rel)
9654 *wrel = *rel;
9655 }
9656
9657 if (wrel != rel)
9658 {
9659 Elf_Internal_Shdr *rel_hdr;
9660 size_t deleted = rel - wrel;
9661
9662 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9663 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9664 if (rel_hdr->sh_size == 0)
9665 {
9666 /* It is too late to remove an empty reloc section. Leave
9667 one NONE reloc.
9668 ??? What is wrong with an empty section??? */
9669 rel_hdr->sh_size = rel_hdr->sh_entsize;
9670 deleted -= 1;
9671 wrel++;
9672 }
9673 relend = wrel;
9674 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9675 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9676 input_section->reloc_count -= deleted;
252b5132
RH
9677 }
9678
252b5132
RH
9679#ifdef DEBUG
9680 fprintf (stderr, "\n");
9681#endif
9682
53291d1f
AM
9683 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9684 && input_section->size != input_section->rawsize
9685 && (strcmp (input_section->output_section->name, ".init") == 0
9686 || strcmp (input_section->output_section->name, ".fini") == 0))
9687 {
9688 /* Branch around the trampolines. */
9689 unsigned int insn = B + input_section->size - input_section->rawsize;
9690 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9691 }
9692
5446cbdf 9693 if (htab->params->ppc476_workaround
795bc6b3 9694 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
0e1862bb 9695 && (!bfd_link_relocatable (info)
795bc6b3
AM
9696 || (input_section->output_section->alignment_power
9697 >= htab->params->pagesize_p2)))
5446cbdf 9698 {
5446cbdf 9699 bfd_vma start_addr, end_addr, addr;
795bc6b3 9700 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf 9701
5446cbdf 9702 if (relax_info->workaround_size != 0)
40fd06d1
AM
9703 {
9704 bfd_byte *p;
9705 unsigned int n;
9706 bfd_byte fill[4];
9707
9708 bfd_put_32 (input_bfd, BA, fill);
9709 p = contents + input_section->size - relax_info->workaround_size;
9710 n = relax_info->workaround_size >> 2;
9711 while (n--)
9712 {
9713 memcpy (p, fill, 4);
9714 p += 4;
9715 }
9716 }
5446cbdf
AM
9717
9718 /* The idea is: Replace the last instruction on a page with a
9719 branch to a patch area. Put the insn there followed by a
9720 branch back to the next page. Complicated a little by
9721 needing to handle moved conditional branches, and by not
9722 wanting to touch data-in-text. */
9723
9724 start_addr = (input_section->output_section->vma
9725 + input_section->output_offset);
9726 end_addr = (start_addr + input_section->size
9727 - relax_info->workaround_size);
9728 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9729 addr < end_addr;
9730 addr += pagesize)
9731 {
9732 bfd_vma offset = addr - start_addr;
9733 Elf_Internal_Rela *lo, *hi;
9734 bfd_boolean is_data;
9735 bfd_vma patch_off, patch_addr;
9736 unsigned int insn;
9737
9738 /* Do we have a data reloc at this offset? If so, leave
9739 the word alone. */
9740 is_data = FALSE;
9741 lo = relocs;
668e22e5
AM
9742 hi = relend;
9743 rel = NULL;
5446cbdf
AM
9744 while (lo < hi)
9745 {
9746 rel = lo + (hi - lo) / 2;
9747 if (rel->r_offset < offset)
9748 lo = rel + 1;
668e22e5 9749 else if (rel->r_offset > offset + 3)
5446cbdf
AM
9750 hi = rel;
9751 else
9752 {
9753 switch (ELF32_R_TYPE (rel->r_info))
9754 {
9755 case R_PPC_ADDR32:
9756 case R_PPC_UADDR32:
9757 case R_PPC_REL32:
9758 case R_PPC_ADDR30:
9759 is_data = TRUE;
9760 break;
9761 default:
9762 break;
9763 }
9764 break;
9765 }
9766 }
9767 if (is_data)
9768 continue;
9769
b4ab4364
AM
9770 /* Some instructions can be left alone too. Unconditional
9771 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9772 avoid the icache failure.
9773
9774 The problem occurs due to prefetch across a page boundary
9775 where stale instructions can be fetched from the next
9776 page, and the mechanism for flushing these bad
9777 instructions fails under certain circumstances. The
9778 unconditional branches:
9779 1) Branch: b, bl, ba, bla,
9780 2) Branch Conditional: bc, bca, bcl, bcla,
9781 3) Branch Conditional to Link Register: bclr, bclrl,
9782 where (2) and (3) have BO=0x14 making them unconditional,
9783 prevent the bad prefetch because the prefetch itself is
9784 affected by these instructions. This happens even if the
9785 instruction is not executed.
9786
9787 A bctr example:
9788 .
9789 . lis 9,new_page@ha
9790 . addi 9,9,new_page@l
9791 . mtctr 9
9792 . bctr
9793 . nop
9794 . nop
9795 . new_page:
9796 .
9797 The bctr is not predicted taken due to ctr not being
9798 ready, so prefetch continues on past the bctr into the
9799 new page which might have stale instructions. If they
9800 fail to be flushed, then they will be executed after the
9801 bctr executes. Either of the following modifications
9802 prevent the bad prefetch from happening in the first
9803 place:
9804 .
1b786873
L
9805 . lis 9,new_page@ha lis 9,new_page@ha
9806 . addi 9,9,new_page@l addi 9,9,new_page@l
9807 . mtctr 9 mtctr 9
9808 . bctr bctr
b4ab4364 9809 . nop b somewhere_else
1b786873
L
9810 . b somewhere_else nop
9811 . new_page: new_page:
b4ab4364 9812 . */
5446cbdf 9813 insn = bfd_get_32 (input_bfd, contents + offset);
b4ab4364
AM
9814 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9815 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9816 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
5446cbdf 9817 || ((insn & (0x3f << 26)) == (19u << 26)
b4ab4364
AM
9818 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9819 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
5446cbdf
AM
9820 continue;
9821
9822 patch_addr = (start_addr + input_section->size
9823 - relax_info->workaround_size);
9824 patch_addr = (patch_addr + 15) & -16;
9825 patch_off = patch_addr - start_addr;
9826 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
668e22e5
AM
9827
9828 if (rel != NULL
9829 && rel->r_offset >= offset
9830 && rel->r_offset < offset + 4)
9831 {
f8b44781
AM
9832 asection *sreloc;
9833
668e22e5
AM
9834 /* If the insn we are patching had a reloc, adjust the
9835 reloc r_offset so that the reloc applies to the moved
9836 location. This matters for -r and --emit-relocs. */
9837 if (rel + 1 != relend)
9838 {
9839 Elf_Internal_Rela tmp = *rel;
9840
9841 /* Keep the relocs sorted by r_offset. */
9842 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9843 relend[-1] = tmp;
9844 }
9845 relend[-1].r_offset += patch_off - offset;
f8b44781
AM
9846
9847 /* Adjust REL16 addends too. */
9848 switch (ELF32_R_TYPE (relend[-1].r_info))
9849 {
9850 case R_PPC_REL16:
9851 case R_PPC_REL16_LO:
9852 case R_PPC_REL16_HI:
9853 case R_PPC_REL16_HA:
9854 relend[-1].r_addend += patch_off - offset;
9855 break;
9856 default:
9857 break;
9858 }
9859
9860 /* If we are building a PIE or shared library with
9861 non-PIC objects, perhaps we had a dynamic reloc too?
9862 If so, the dynamic reloc must move with the insn. */
9863 sreloc = elf_section_data (input_section)->sreloc;
9864 if (sreloc != NULL)
9865 {
1d5c94cb 9866 Elf32_External_Rela *slo, *shi, *srelend;
f8b44781
AM
9867 bfd_vma soffset;
9868
1d5c94cb
AM
9869 slo = (Elf32_External_Rela *) sreloc->contents;
9870 shi = srelend = slo + sreloc->reloc_count;
f8b44781
AM
9871 soffset = (offset + input_section->output_section->vma
9872 + input_section->output_offset);
9873 while (slo < shi)
9874 {
1d5c94cb
AM
9875 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9876 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9877 &outrel);
f8b44781
AM
9878 if (outrel.r_offset < soffset)
9879 slo = srel + 1;
9880 else if (outrel.r_offset > soffset + 3)
9881 shi = srel;
9882 else
9883 {
1d5c94cb 9884 if (srel + 1 != srelend)
f8b44781 9885 {
1d5c94cb
AM
9886 memmove (srel, srel + 1,
9887 (srelend - (srel + 1)) * sizeof (*srel));
9888 srel = srelend - 1;
f8b44781
AM
9889 }
9890 outrel.r_offset += patch_off - offset;
1d5c94cb
AM
9891 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9892 (bfd_byte *) srel);
f8b44781
AM
9893 break;
9894 }
9895 }
9896 }
668e22e5
AM
9897 }
9898 else
9899 rel = NULL;
9900
5446cbdf
AM
9901 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9902 && (insn & 2) == 0 /* relative */)
9903 {
9904 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9905
9906 delta += offset - patch_off;
0e1862bb 9907 if (bfd_link_relocatable (info) && rel != NULL)
668e22e5 9908 delta = 0;
0e1862bb 9909 if (!bfd_link_relocatable (info) && rel != NULL)
668e22e5
AM
9910 {
9911 enum elf_ppc_reloc_type r_type;
9912
9913 r_type = ELF32_R_TYPE (relend[-1].r_info);
9914 if (r_type == R_PPC_REL14_BRTAKEN)
9915 insn |= BRANCH_PREDICT_BIT;
9916 else if (r_type == R_PPC_REL14_BRNTAKEN)
9917 insn &= ~BRANCH_PREDICT_BIT;
9918 else
9919 BFD_ASSERT (r_type == R_PPC_REL14);
9920
9921 if ((r_type == R_PPC_REL14_BRTAKEN
9922 || r_type == R_PPC_REL14_BRNTAKEN)
9923 && delta + 0x8000 < 0x10000
9924 && (bfd_signed_vma) delta < 0)
9925 insn ^= BRANCH_PREDICT_BIT;
9926 }
5446cbdf
AM
9927 if (delta + 0x8000 < 0x10000)
9928 {
9929 bfd_put_32 (input_bfd,
9930 (insn & ~0xfffc) | (delta & 0xfffc),
9931 contents + patch_off);
9932 patch_off += 4;
9933 bfd_put_32 (input_bfd,
9934 B | ((offset + 4 - patch_off) & 0x3fffffc),
9935 contents + patch_off);
9936 patch_off += 4;
9937 }
9938 else
9939 {
668e22e5
AM
9940 if (rel != NULL)
9941 {
9942 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9943
9944 relend[-1].r_offset += 8;
9945 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9946 }
5446cbdf
AM
9947 bfd_put_32 (input_bfd,
9948 (insn & ~0xfffc) | 8,
9949 contents + patch_off);
9950 patch_off += 4;
9951 bfd_put_32 (input_bfd,
9952 B | ((offset + 4 - patch_off) & 0x3fffffc),
9953 contents + patch_off);
9954 patch_off += 4;
9955 bfd_put_32 (input_bfd,
9956 B | ((delta - 8) & 0x3fffffc),
9957 contents + patch_off);
9958 patch_off += 4;
9959 }
9960 }
9961 else
9962 {
9963 bfd_put_32 (input_bfd, insn, contents + patch_off);
9964 patch_off += 4;
9965 bfd_put_32 (input_bfd,
9966 B | ((offset + 4 - patch_off) & 0x3fffffc),
9967 contents + patch_off);
9968 patch_off += 4;
9969 }
9970 BFD_ASSERT (patch_off <= input_section->size);
9971 relax_info->workaround_size = input_section->size - patch_off;
9972 }
9973 }
9974
252b5132
RH
9975 return ret;
9976}
252b5132 9977\f
25dbc73a
AM
9978/* Finish up dynamic symbol handling. We set the contents of various
9979 dynamic sections here. */
c5fccbec 9980
b34976b6 9981static bfd_boolean
25dbc73a
AM
9982ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9983 struct bfd_link_info *info,
9984 struct elf_link_hash_entry *h,
9985 Elf_Internal_Sym *sym)
e1a9cb8e 9986{
25dbc73a 9987 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
9988 struct plt_entry *ent;
9989 bfd_boolean doneone;
e1a9cb8e 9990
25dbc73a
AM
9991#ifdef DEBUG
9992 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9993 h->root.root.string);
9994#endif
e1a9cb8e 9995
25dbc73a
AM
9996 htab = ppc_elf_hash_table (info);
9997 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 9998
a6aa5195
AM
9999 doneone = FALSE;
10000 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10001 if (ent->plt.offset != (bfd_vma) -1)
10002 {
10003 if (!doneone)
10004 {
10005 Elf_Internal_Rela rela;
10006 bfd_byte *loc;
10007 bfd_vma reloc_index;
e1a9cb8e 10008
e054468f 10009 if (htab->plt_type == PLT_NEW
25f23106
AM
10010 || !htab->elf.dynamic_sections_created
10011 || h->dynindx == -1)
9d8504b1
PB
10012 reloc_index = ent->plt.offset / 4;
10013 else
10014 {
10015 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10016 / htab->plt_slot_size);
10017 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 10018 && htab->plt_type == PLT_OLD)
9d8504b1
PB
10019 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10020 }
10021
a6aa5195
AM
10022 /* This symbol has an entry in the procedure linkage table.
10023 Set it up. */
e054468f 10024 if (htab->plt_type == PLT_VXWORKS
25f23106
AM
10025 && htab->elf.dynamic_sections_created
10026 && h->dynindx != -1)
a6aa5195 10027 {
9d8504b1
PB
10028 bfd_vma got_offset;
10029 const bfd_vma *plt_entry;
5b914448 10030
9d8504b1
PB
10031 /* The first three entries in .got.plt are reserved. */
10032 got_offset = (reloc_index + 3) * 4;
10033
10034 /* Use the right PLT. */
0e1862bb 10035 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9d8504b1
PB
10036 : ppc_elf_vxworks_plt_entry;
10037
10038 /* Fill in the .plt on VxWorks. */
0e1862bb 10039 if (bfd_link_pic (info))
9d8504b1 10040 {
9d8504b1 10041 bfd_put_32 (output_bfd,
e87d4038 10042 plt_entry[0] | PPC_HA (got_offset),
9d8504b1
PB
10043 htab->plt->contents + ent->plt.offset + 0);
10044 bfd_put_32 (output_bfd,
e87d4038 10045 plt_entry[1] | PPC_LO (got_offset),
9d8504b1
PB
10046 htab->plt->contents + ent->plt.offset + 4);
10047 }
10048 else
10049 {
e87d4038 10050 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
10051
10052 bfd_put_32 (output_bfd,
e87d4038 10053 plt_entry[0] | PPC_HA (got_loc),
9d8504b1
PB
10054 htab->plt->contents + ent->plt.offset + 0);
10055 bfd_put_32 (output_bfd,
e87d4038 10056 plt_entry[1] | PPC_LO (got_loc),
9d8504b1
PB
10057 htab->plt->contents + ent->plt.offset + 4);
10058 }
10059
10060 bfd_put_32 (output_bfd, plt_entry[2],
10061 htab->plt->contents + ent->plt.offset + 8);
10062 bfd_put_32 (output_bfd, plt_entry[3],
10063 htab->plt->contents + ent->plt.offset + 12);
10064
10065 /* This instruction is an immediate load. The value loaded is
10066 the byte offset of the R_PPC_JMP_SLOT relocation from the
10067 start of the .rela.plt section. The value is stored in the
10068 low-order 16 bits of the load instruction. */
10069 /* NOTE: It appears that this is now an index rather than a
10070 prescaled offset. */
5b914448 10071 bfd_put_32 (output_bfd,
9d8504b1
PB
10072 plt_entry[4] | reloc_index,
10073 htab->plt->contents + ent->plt.offset + 16);
10074 /* This instruction is a PC-relative branch whose target is
10075 the start of the PLT section. The address of this branch
10076 instruction is 20 bytes beyond the start of this PLT entry.
10077 The address is encoded in bits 6-29, inclusive. The value
10078 stored is right-shifted by two bits, permitting a 26-bit
10079 offset. */
5b914448
AM
10080 bfd_put_32 (output_bfd,
10081 (plt_entry[5]
9d8504b1
PB
10082 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10083 htab->plt->contents + ent->plt.offset + 20);
10084 bfd_put_32 (output_bfd, plt_entry[6],
10085 htab->plt->contents + ent->plt.offset + 24);
10086 bfd_put_32 (output_bfd, plt_entry[7],
10087 htab->plt->contents + ent->plt.offset + 28);
10088
10089 /* Fill in the GOT entry corresponding to this PLT slot with
a8685210 10090 the address immediately after the "bctr" instruction
9d8504b1
PB
10091 in this PLT entry. */
10092 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
10093 + htab->plt->output_offset
10094 + ent->plt.offset + 16),
10095 htab->sgotplt->contents + got_offset);
10096
0e1862bb 10097 if (!bfd_link_pic (info))
9d8504b1
PB
10098 {
10099 /* Fill in a couple of entries in .rela.plt.unloaded. */
10100 loc = htab->srelplt2->contents
10101 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10102 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10103 * sizeof (Elf32_External_Rela));
10104
10105 /* Provide the @ha relocation for the first instruction. */
10106 rela.r_offset = (htab->plt->output_section->vma
10107 + htab->plt->output_offset
10108 + ent->plt.offset + 2);
636ce3f5 10109 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
10110 R_PPC_ADDR16_HA);
10111 rela.r_addend = got_offset;
10112 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10113 loc += sizeof (Elf32_External_Rela);
10114
10115 /* Provide the @l relocation for the second instruction. */
10116 rela.r_offset = (htab->plt->output_section->vma
10117 + htab->plt->output_offset
10118 + ent->plt.offset + 6);
636ce3f5 10119 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
10120 R_PPC_ADDR16_LO);
10121 rela.r_addend = got_offset;
10122 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10123 loc += sizeof (Elf32_External_Rela);
10124
10125 /* Provide a relocation for the GOT entry corresponding to this
10126 PLT slot. Point it at the middle of the .plt entry. */
10127 rela.r_offset = (htab->sgotplt->output_section->vma
10128 + htab->sgotplt->output_offset
10129 + got_offset);
7325306f 10130 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
10131 R_PPC_ADDR32);
10132 rela.r_addend = ent->plt.offset + 16;
10133 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10134 }
10135
10136 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10137 In particular, the offset for the relocation is not the
10138 address of the PLT entry for this function, as specified
10139 by the ABI. Instead, the offset is set to the address of
10140 the GOT slot for this function. See EABI 4.4.4.1. */
10141 rela.r_offset = (htab->sgotplt->output_section->vma
10142 + htab->sgotplt->output_offset
10143 + got_offset);
10144
a6aa5195
AM
10145 }
10146 else
10147 {
e054468f 10148 asection *splt = htab->plt;
25f23106
AM
10149 if (!htab->elf.dynamic_sections_created
10150 || h->dynindx == -1)
e054468f
AM
10151 splt = htab->iplt;
10152
10153 rela.r_offset = (splt->output_section->vma
10154 + splt->output_offset
9d8504b1 10155 + ent->plt.offset);
e054468f 10156 if (htab->plt_type == PLT_OLD
25f23106
AM
10157 || !htab->elf.dynamic_sections_created
10158 || h->dynindx == -1)
9d8504b1
PB
10159 {
10160 /* We don't need to fill in the .plt. The ppc dynamic
10161 linker will fill it in. */
10162 }
10163 else
10164 {
10165 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10166 + htab->glink->output_section->vma
10167 + htab->glink->output_offset);
10168 bfd_put_32 (output_bfd, val,
e054468f 10169 splt->contents + ent->plt.offset);
9d8504b1 10170 }
a6aa5195 10171 }
e1a9cb8e 10172
a6aa5195 10173 /* Fill in the entry in the .rela.plt section. */
a6aa5195 10174 rela.r_addend = 0;
e054468f
AM
10175 if (!htab->elf.dynamic_sections_created
10176 || h->dynindx == -1)
10177 {
10178 BFD_ASSERT (h->type == STT_GNU_IFUNC
10179 && h->def_regular
10180 && (h->root.type == bfd_link_hash_defined
10181 || h->root.type == bfd_link_hash_defweak));
10182 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10183 rela.r_addend = SYM_VAL (h);
10184 }
10185 else
10186 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
e1a9cb8e 10187
25f23106
AM
10188 if (!htab->elf.dynamic_sections_created
10189 || h->dynindx == -1)
10190 loc = (htab->reliplt->contents
10191 + (htab->reliplt->reloc_count++
10192 * sizeof (Elf32_External_Rela)));
e054468f 10193 else
25f23106
AM
10194 loc = (htab->relplt->contents
10195 + reloc_index * sizeof (Elf32_External_Rela));
a6aa5195 10196 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 10197
a6aa5195
AM
10198 if (!h->def_regular)
10199 {
0eb4a168
AM
10200 /* Mark the symbol as undefined, rather than as
10201 defined in the .plt section. Leave the value if
10202 there were any relocations where pointer equality
10203 matters (this is a clue for the dynamic linker, to
10204 make function pointer comparisons work between an
10205 application and shared library), otherwise set it
10206 to zero. */
a6aa5195 10207 sym->st_shndx = SHN_UNDEF;
0eb4a168 10208 if (!h->pointer_equality_needed)
a6aa5195 10209 sym->st_value = 0;
0eb4a168
AM
10210 else if (!h->ref_regular_nonweak)
10211 {
625af618
AM
10212 /* This breaks function pointer comparisons, but
10213 that is better than breaking tests for a NULL
0eb4a168 10214 function pointer. */
0eb4a168
AM
10215 sym->st_value = 0;
10216 }
a6aa5195 10217 }
de972ffa 10218 else if (h->type == STT_GNU_IFUNC
0e1862bb 10219 && !bfd_link_pic (info))
de972ffa
AM
10220 {
10221 /* Set the value of ifunc symbols in a non-pie
10222 executable to the glink entry. This is to avoid
10223 text relocations. We can't do this for ifunc in
10224 allocate_dynrelocs, as we do for normal dynamic
10225 function symbols with plt entries, because we need
10226 to keep the original value around for the ifunc
10227 relocation. */
10228 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10229 (output_bfd, htab->glink->output_section));
5b914448
AM
10230 sym->st_value = (ent->glink_offset
10231 + htab->glink->output_offset
de972ffa
AM
10232 + htab->glink->output_section->vma);
10233 }
a6aa5195
AM
10234 doneone = TRUE;
10235 }
e1a9cb8e 10236
e054468f 10237 if (htab->plt_type == PLT_NEW
25f23106
AM
10238 || !htab->elf.dynamic_sections_created
10239 || h->dynindx == -1)
a6aa5195 10240 {
a7f2871e 10241 unsigned char *p;
e054468f 10242 asection *splt = htab->plt;
25f23106
AM
10243 if (!htab->elf.dynamic_sections_created
10244 || h->dynindx == -1)
e054468f 10245 splt = htab->iplt;
e1a9cb8e 10246
a7f2871e
AM
10247 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10248
5446cbdf 10249 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
a7f2871e
AM
10250 {
10251 bfd_put_32 (output_bfd, LWZ_11_3, p);
10252 p += 4;
10253 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10254 p += 4;
10255 bfd_put_32 (output_bfd, MR_0_3, p);
10256 p += 4;
10257 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10258 p += 4;
10259 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10260 p += 4;
10261 bfd_put_32 (output_bfd, BEQLR, p);
10262 p += 4;
10263 bfd_put_32 (output_bfd, MR_3_0, p);
10264 p += 4;
10265 bfd_put_32 (output_bfd, NOP, p);
10266 p += 4;
10267 }
10268
10269 write_glink_stub (ent, splt, p, info);
e1a9cb8e 10270
0e1862bb 10271 if (!bfd_link_pic (info))
e054468f
AM
10272 /* We only need one non-PIC glink stub. */
10273 break;
a6aa5195
AM
10274 }
10275 else
10276 break;
10277 }
e1a9cb8e 10278
25dbc73a
AM
10279 if (h->needs_copy)
10280 {
10281 asection *s;
10282 Elf_Internal_Rela rela;
10283 bfd_byte *loc;
e1a9cb8e 10284
25dbc73a 10285 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 10286
25dbc73a
AM
10287#ifdef DEBUG
10288 fprintf (stderr, ", copy");
10289#endif
e1a9cb8e 10290
25dbc73a 10291 BFD_ASSERT (h->dynindx != -1);
86bbe32f 10292
4dc4a9a5 10293 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
10294 s = htab->relsbss;
10295 else
10296 s = htab->relbss;
10297 BFD_ASSERT (s != NULL);
e1a9cb8e 10298
e87d4038 10299 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
10300 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10301 rela.r_addend = 0;
10302 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10303 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10304 }
e1a9cb8e 10305
25dbc73a
AM
10306#ifdef DEBUG
10307 fprintf (stderr, "\n");
10308#endif
e1a9cb8e 10309
25dbc73a
AM
10310 return TRUE;
10311}
10312\f
10313static enum elf_reloc_type_class
7e612e98
AM
10314ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10315 const asection *rel_sec,
10316 const Elf_Internal_Rela *rela)
e1a9cb8e 10317{
7e612e98
AM
10318 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10319
10320 if (rel_sec == htab->reliplt)
10321 return reloc_class_ifunc;
10322
25dbc73a
AM
10323 switch (ELF32_R_TYPE (rela->r_info))
10324 {
10325 case R_PPC_RELATIVE:
10326 return reloc_class_relative;
25dbc73a
AM
10327 case R_PPC_JMP_SLOT:
10328 return reloc_class_plt;
10329 case R_PPC_COPY:
10330 return reloc_class_copy;
10331 default:
10332 return reloc_class_normal;
10333 }
e1a9cb8e 10334}
25dbc73a
AM
10335\f
10336/* Finish up the dynamic sections. */
e1a9cb8e 10337
25dbc73a
AM
10338static bfd_boolean
10339ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10340 struct bfd_link_info *info)
e1a9cb8e 10341{
25dbc73a 10342 asection *sdyn;
9d8504b1 10343 asection *splt;
25dbc73a 10344 struct ppc_elf_link_hash_table *htab;
1fe44d79 10345 bfd_vma got;
e87d4038
AM
10346 bfd *dynobj;
10347 bfd_boolean ret = TRUE;
e1a9cb8e 10348
25dbc73a
AM
10349#ifdef DEBUG
10350 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10351#endif
6b0817e5 10352
25dbc73a 10353 htab = ppc_elf_hash_table (info);
9d8504b1 10354 dynobj = elf_hash_table (info)->dynobj;
3d4d4302 10355 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9d8504b1 10356 if (htab->is_vxworks)
3d4d4302 10357 splt = bfd_get_linker_section (dynobj, ".plt");
9d8504b1
PB
10358 else
10359 splt = NULL;
e1a9cb8e 10360
1fe44d79
AM
10361 got = 0;
10362 if (htab->elf.hgot != NULL)
e87d4038 10363 got = SYM_VAL (htab->elf.hgot);
1fe44d79 10364
25dbc73a 10365 if (htab->elf.dynamic_sections_created)
e1a9cb8e 10366 {
25dbc73a 10367 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 10368
25dbc73a 10369 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 10370
25dbc73a
AM
10371 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10372 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10373 for (; dyncon < dynconend; dyncon++)
10374 {
10375 Elf_Internal_Dyn dyn;
10376 asection *s;
e1a9cb8e 10377
9d8504b1 10378 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 10379
25dbc73a
AM
10380 switch (dyn.d_tag)
10381 {
10382 case DT_PLTGOT:
9d8504b1
PB
10383 if (htab->is_vxworks)
10384 s = htab->sgotplt;
10385 else
10386 s = htab->plt;
25dbc73a
AM
10387 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10388 break;
86bbe32f 10389
25dbc73a
AM
10390 case DT_PLTRELSZ:
10391 dyn.d_un.d_val = htab->relplt->size;
10392 break;
e1a9cb8e 10393
25dbc73a
AM
10394 case DT_JMPREL:
10395 s = htab->relplt;
10396 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10397 break;
2f89ff8d 10398
1fe44d79
AM
10399 case DT_PPC_GOT:
10400 dyn.d_un.d_ptr = got;
d7128ce4
AM
10401 break;
10402
9d8504b1
PB
10403 case DT_RELASZ:
10404 if (htab->is_vxworks)
10405 {
10406 if (htab->relplt)
10407 dyn.d_un.d_ptr -= htab->relplt->size;
10408 break;
10409 }
10410 continue;
10411
25dbc73a 10412 default:
7a2b07ff
NS
10413 if (htab->is_vxworks
10414 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10415 break;
25dbc73a
AM
10416 continue;
10417 }
4c45e5c9 10418
25dbc73a
AM
10419 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10420 }
10421 }
4c45e5c9 10422
3b36f7e6 10423 if (htab->got != NULL)
25dbc73a 10424 {
e79f5955
AM
10425 if (htab->elf.hgot->root.u.def.section == htab->got
10426 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
e87d4038 10427 {
e79f5955 10428 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 10429
e87d4038
AM
10430 p += htab->elf.hgot->root.u.def.value;
10431 if (htab->plt_type == PLT_OLD)
e79f5955
AM
10432 {
10433 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10434 so that a function can easily find the address of
10435 _GLOBAL_OFFSET_TABLE_. */
10436 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10437 < htab->elf.hgot->root.u.def.section->size);
10438 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10439 }
3b36f7e6 10440
e87d4038 10441 if (sdyn != NULL)
e79f5955
AM
10442 {
10443 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10444 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10445 < htab->elf.hgot->root.u.def.section->size);
10446 bfd_put_32 (output_bfd, val, p);
10447 }
e87d4038
AM
10448 }
10449 else
10450 {
8de848d8 10451 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
25f53a85
AM
10452 htab->elf.hgot->root.root.string,
10453 (htab->sgotplt != NULL
10454 ? htab->sgotplt->name : htab->got->name));
e87d4038
AM
10455 bfd_set_error (bfd_error_bad_value);
10456 ret = FALSE;
10457 }
25dbc73a
AM
10458
10459 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10460 }
10461
9d8504b1
PB
10462 /* Fill in the first entry in the VxWorks procedure linkage table. */
10463 if (splt && splt->size > 0)
10464 {
10465 /* Use the right PLT. */
0e1862bb 10466 const bfd_vma *plt_entry = (bfd_link_pic (info)
5b914448
AM
10467 ? ppc_elf_vxworks_pic_plt0_entry
10468 : ppc_elf_vxworks_plt0_entry);
9d8504b1 10469
0e1862bb 10470 if (!bfd_link_pic (info))
9d8504b1 10471 {
e87d4038 10472 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 10473
e87d4038 10474 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 10475 splt->contents + 0);
e87d4038 10476 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
10477 splt->contents + 4);
10478 }
10479 else
10480 {
10481 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10482 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10483 }
10484 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10485 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10486 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10487 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10488 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10489 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10490
0e1862bb 10491 if (! bfd_link_pic (info))
9d8504b1
PB
10492 {
10493 Elf_Internal_Rela rela;
10494 bfd_byte *loc;
10495
10496 loc = htab->srelplt2->contents;
10497
10498 /* Output the @ha relocation for the first instruction. */
10499 rela.r_offset = (htab->plt->output_section->vma
10500 + htab->plt->output_offset
10501 + 2);
636ce3f5 10502 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10503 rela.r_addend = 0;
10504 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10505 loc += sizeof (Elf32_External_Rela);
5b914448 10506
9d8504b1
PB
10507 /* Output the @l relocation for the second instruction. */
10508 rela.r_offset = (htab->plt->output_section->vma
10509 + htab->plt->output_offset
10510 + 6);
636ce3f5 10511 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10512 rela.r_addend = 0;
10513 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10514 loc += sizeof (Elf32_External_Rela);
10515
10516 /* Fix up the remaining relocations. They may have the wrong
10517 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10518 in which symbols were output. */
10519 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10520 {
10521 Elf_Internal_Rela rel;
10522
10523 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10524 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10525 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10526 loc += sizeof (Elf32_External_Rela);
10527
10528 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10529 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10530 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10531 loc += sizeof (Elf32_External_Rela);
10532
10533 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 10534 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
10535 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10536 loc += sizeof (Elf32_External_Rela);
10537 }
10538 }
10539 }
10540
e054468f
AM
10541 if (htab->glink != NULL
10542 && htab->glink->contents != NULL
10543 && htab->elf.dynamic_sections_created)
d7128ce4
AM
10544 {
10545 unsigned char *p;
10546 unsigned char *endp;
a6aa5195 10547 bfd_vma res0;
d7128ce4 10548 unsigned int i;
a6aa5195
AM
10549
10550 /*
10551 * PIC glink code is the following:
10552 *
10553 * # ith PLT code stub.
10554 * addis 11,30,(plt+(i-1)*4-got)@ha
10555 * lwz 11,(plt+(i-1)*4-got)@l(11)
10556 * mtctr 11
10557 * bctr
10558 *
10559 * # A table of branches, one for each plt entry.
176a0d42 10560 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
10561 * # addresses, so (r11 - res_0) gives the plt index * 4.
10562 * res_0: b PLTresolve
10563 * res_1: b PLTresolve
10564 * .
10565 * # Some number of entries towards the end can be nops
10566 * res_n_m3: nop
10567 * res_n_m2: nop
10568 * res_n_m1:
10569 *
10570 * PLTresolve:
10571 * addis 11,11,(1f-res_0)@ha
10572 * mflr 0
10573 * bcl 20,31,1f
10574 * 1: addi 11,11,(1b-res_0)@l
10575 * mflr 12
10576 * mtlr 0
10577 * sub 11,11,12 # r11 = index * 4
10578 * addis 12,12,(got+4-1b)@ha
10579 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10580 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10581 * mtctr 0
10582 * add 0,11,11
10583 * add 11,0,11 # r11 = index * 12 = reloc offset.
10584 * bctr
10585 */
10586 static const unsigned int pic_plt_resolve[] =
10587 {
10588 ADDIS_11_11,
10589 MFLR_0,
10590 BCL_20_31,
10591 ADDI_11_11,
10592 MFLR_12,
10593 MTLR_0,
10594 SUB_11_11_12,
10595 ADDIS_12_12,
10596 LWZ_0_12,
10597 LWZ_12_12,
10598 MTCTR_0,
10599 ADD_0_11_11,
10600 ADD_11_0_11,
10601 BCTR,
10602 NOP,
10603 NOP
10604 };
10605
176a0d42
AM
10606 /*
10607 * Non-PIC glink code is a little simpler.
10608 *
10609 * # ith PLT code stub.
10610 * lis 11,(plt+(i-1)*4)@ha
10611 * lwz 11,(plt+(i-1)*4)@l(11)
10612 * mtctr 11
10613 * bctr
10614 *
10615 * The branch table is the same, then comes
10616 *
10617 * PLTresolve:
10618 * lis 12,(got+4)@ha
10619 * addis 11,11,(-res_0)@ha
10620 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10621 * addi 11,11,(-res_0)@l # r11 = index * 4
10622 * mtctr 0
10623 * add 0,11,11
10624 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10625 * add 11,0,11 # r11 = index * 12 = reloc offset.
10626 * bctr
10627 */
d7128ce4
AM
10628 static const unsigned int plt_resolve[] =
10629 {
a6aa5195
AM
10630 LIS_12,
10631 ADDIS_11_11,
10632 LWZ_0_12,
10633 ADDI_11_11,
d7128ce4 10634 MTCTR_0,
7e8aeb9a 10635 ADD_0_11_11,
a6aa5195 10636 LWZ_12_12,
7e8aeb9a 10637 ADD_11_0_11,
d7128ce4
AM
10638 BCTR,
10639 NOP,
10640 NOP,
a6aa5195
AM
10641 NOP,
10642 NOP,
10643 NOP,
10644 NOP,
d7128ce4
AM
10645 NOP
10646 };
10647
a6aa5195
AM
10648 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10649 abort ();
10650 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
10651 abort ();
10652
a6aa5195 10653 /* Build the branch table, one for each plt entry (less one),
86b9da88 10654 and perhaps some padding. */
a6aa5195
AM
10655 p = htab->glink->contents;
10656 p += htab->glink_pltresolve;
86b9da88
AM
10657 endp = htab->glink->contents;
10658 endp += htab->glink->size - GLINK_PLTRESOLVE;
da3a2088 10659 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
86b9da88
AM
10660 {
10661 bfd_put_32 (output_bfd, B + endp - p, p);
10662 p += 4;
10663 }
10664 while (p < endp)
10665 {
10666 bfd_put_32 (output_bfd, NOP, p);
10667 p += 4;
10668 }
10669
7e8aeb9a 10670 res0 = (htab->glink_pltresolve
86b9da88
AM
10671 + htab->glink->output_section->vma
10672 + htab->glink->output_offset);
10673
da3a2088
AM
10674 if (htab->params->ppc476_workaround)
10675 {
10676 /* Ensure that a call stub at the end of a page doesn't
10677 result in prefetch over the end of the page into the
10678 glink branch table. */
10679 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10680 bfd_vma page_addr;
10681 bfd_vma glink_start = (htab->glink->output_section->vma
10682 + htab->glink->output_offset);
10683
10684 for (page_addr = res0 & -pagesize;
10685 page_addr > glink_start;
10686 page_addr -= pagesize)
10687 {
10688 /* We have a plt call stub that may need fixing. */
10689 bfd_byte *loc;
10690 unsigned int insn;
10691
10692 loc = htab->glink->contents + page_addr - 4 - glink_start;
10693 insn = bfd_get_32 (output_bfd, loc);
10694 if (insn == BCTR)
10695 {
10696 /* By alignment, we know that there must be at least
10697 one other call stub before this one. */
10698 insn = bfd_get_32 (output_bfd, loc - 16);
10699 if (insn == BCTR)
10700 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10701 else
10702 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10703 }
10704 }
10705 }
10706
86b9da88 10707 /* Last comes the PLTresolve stub. */
0e1862bb 10708 if (bfd_link_pic (info))
7e8aeb9a 10709 {
a6aa5195 10710 bfd_vma bcl;
d7128ce4 10711
a6aa5195 10712 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 10713 {
da3a2088
AM
10714 unsigned int insn = pic_plt_resolve[i];
10715
10716 if (htab->params->ppc476_workaround && insn == NOP)
10717 insn = BA + 0;
10718 bfd_put_32 (output_bfd, insn, p);
7e8aeb9a
AM
10719 p += 4;
10720 }
a6aa5195
AM
10721 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10722
10723 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10724 + htab->glink->output_section->vma
10725 + htab->glink->output_offset);
10726
10727 bfd_put_32 (output_bfd,
10728 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10729 bfd_put_32 (output_bfd,
10730 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10731 bfd_put_32 (output_bfd,
10732 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10733 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10734 {
10735 bfd_put_32 (output_bfd,
10736 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10737 bfd_put_32 (output_bfd,
10738 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10739 }
10740 else
10741 {
10742 bfd_put_32 (output_bfd,
10743 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10744 bfd_put_32 (output_bfd,
10745 LWZ_12_12 + 4, p + 9*4);
10746 }
7e8aeb9a
AM
10747 }
10748 else
d7128ce4 10749 {
a6aa5195 10750 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a 10751 {
da3a2088
AM
10752 unsigned int insn = plt_resolve[i];
10753
10754 if (htab->params->ppc476_workaround && insn == NOP)
10755 insn = BA + 0;
10756 bfd_put_32 (output_bfd, insn, p);
7e8aeb9a
AM
10757 p += 4;
10758 }
a6aa5195
AM
10759 p -= 4 * ARRAY_SIZE (plt_resolve);
10760
10761 bfd_put_32 (output_bfd,
10762 LIS_12 + PPC_HA (got + 4), p + 0*4);
10763 bfd_put_32 (output_bfd,
10764 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10765 bfd_put_32 (output_bfd,
10766 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10767 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10768 {
10769 bfd_put_32 (output_bfd,
10770 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10771 bfd_put_32 (output_bfd,
10772 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10773 }
10774 else
10775 {
10776 bfd_put_32 (output_bfd,
10777 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10778 bfd_put_32 (output_bfd,
10779 LWZ_12_12 + 4, p + 6*4);
10780 }
d7128ce4 10781 }
d7128ce4
AM
10782 }
10783
6177242a
AM
10784 if (htab->glink_eh_frame != NULL
10785 && htab->glink_eh_frame->contents != NULL)
10786 {
10787 unsigned char *p = htab->glink_eh_frame->contents;
10788 bfd_vma val;
10789
6177242a
AM
10790 p += sizeof (glink_eh_frame_cie);
10791 /* FDE length. */
6177242a
AM
10792 p += 4;
10793 /* CIE pointer. */
6177242a
AM
10794 p += 4;
10795 /* Offset to .glink. */
10796 val = (htab->glink->output_section->vma
10797 + htab->glink->output_offset);
10798 val -= (htab->glink_eh_frame->output_section->vma
10799 + htab->glink_eh_frame->output_offset);
10800 val -= p - htab->glink_eh_frame->contents;
10801 bfd_put_32 (htab->elf.dynobj, val, p);
6177242a 10802
dbaa2011 10803 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
6177242a
AM
10804 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10805 htab->glink_eh_frame,
10806 htab->glink_eh_frame->contents))
10807 return FALSE;
10808 }
10809
e87d4038 10810 return ret;
25dbc73a 10811}
e1a9cb8e 10812\f
6d00b590 10813#define TARGET_LITTLE_SYM powerpc_elf32_le_vec
252b5132 10814#define TARGET_LITTLE_NAME "elf32-powerpcle"
6d00b590 10815#define TARGET_BIG_SYM powerpc_elf32_vec
252b5132
RH
10816#define TARGET_BIG_NAME "elf32-powerpc"
10817#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 10818#define ELF_TARGET_ID PPC32_ELF_DATA
252b5132 10819#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
10820#ifdef __QNXTARGET__
10821#define ELF_MAXPAGESIZE 0x1000
04c6a44c 10822#define ELF_COMMONPAGESIZE 0x1000
d0facd1b 10823#else
252b5132 10824#define ELF_MAXPAGESIZE 0x10000
04c6a44c 10825#define ELF_COMMONPAGESIZE 0x10000
d0facd1b 10826#endif
b1342370 10827#define ELF_MINPAGESIZE 0x1000
252b5132
RH
10828#define elf_info_to_howto ppc_elf_info_to_howto
10829
10830#ifdef EM_CYGNUS_POWERPC
10831#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10832#endif
10833
10834#ifdef EM_PPC_OLD
10835#define ELF_MACHINE_ALT2 EM_PPC_OLD
10836#endif
10837
10838#define elf_backend_plt_not_loaded 1
252b5132 10839#define elf_backend_can_gc_sections 1
51b64d56 10840#define elf_backend_can_refcount 1
b491616a 10841#define elf_backend_rela_normal 1
53291d1f 10842#define elf_backend_caches_rawsize 1
252b5132 10843
43c40ab2 10844#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 10845#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 10846#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 10847#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
b9c361e0 10848#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 10849#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 10850#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 10851#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 10852
feee612b 10853#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
10854#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10855#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10856#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10857#define elf_backend_relocate_section ppc_elf_relocate_section
10858#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10859#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 10860#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
10861#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10862#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10863#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 10864#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
10865#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10866#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10867#define elf_backend_fake_sections ppc_elf_fake_sections
10868#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
b9c361e0 10869#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
c5fccbec
DJ
10870#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10871#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 10872#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 10873#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
10874#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10875#define elf_backend_final_write_processing ppc_elf_final_write_processing
10876#define elf_backend_write_section ppc_elf_write_section
551b43fd 10877#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 10878#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 10879#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 10880#define elf_backend_init_index_section _bfd_elf_init_1_index_section
b9c361e0 10881#define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
252b5132
RH
10882
10883#include "elf32-target.h"
9d8504b1 10884
7b8e7dad
AM
10885/* FreeBSD Target */
10886
10887#undef TARGET_LITTLE_SYM
10888#undef TARGET_LITTLE_NAME
10889
10890#undef TARGET_BIG_SYM
6d00b590 10891#define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
7b8e7dad
AM
10892#undef TARGET_BIG_NAME
10893#define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10894
10895#undef ELF_OSABI
10896#define ELF_OSABI ELFOSABI_FREEBSD
10897
10898#undef elf32_bed
10899#define elf32_bed elf32_powerpc_fbsd_bed
10900
10901#include "elf32-target.h"
10902
9d8504b1
PB
10903/* VxWorks Target */
10904
10905#undef TARGET_LITTLE_SYM
10906#undef TARGET_LITTLE_NAME
10907
10908#undef TARGET_BIG_SYM
6d00b590 10909#define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
9d8504b1
PB
10910#undef TARGET_BIG_NAME
10911#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10912
7b8e7dad
AM
10913#undef ELF_OSABI
10914
d5e3d971
PB
10915/* VxWorks uses the elf default section flags for .plt. */
10916static const struct bfd_elf_special_section *
10917ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 10918{
d5e3d971
PB
10919 if (sec->name == NULL)
10920 return NULL;
10921
10922 if (strcmp (sec->name, ".plt") == 0)
10923 return _bfd_elf_get_sec_type_attr (abfd, sec);
10924
10925 return ppc_elf_get_sec_type_attr (abfd, sec);
10926}
9d8504b1
PB
10927
10928/* Like ppc_elf_link_hash_table_create, but overrides
10929 appropriately for VxWorks. */
10930static struct bfd_link_hash_table *
10931ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10932{
10933 struct bfd_link_hash_table *ret;
10934
10935 ret = ppc_elf_link_hash_table_create (abfd);
10936 if (ret)
10937 {
10938 struct ppc_elf_link_hash_table *htab
10939 = (struct ppc_elf_link_hash_table *)ret;
10940 htab->is_vxworks = 1;
4a3dc543 10941 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
10942 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10943 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10944 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10945 }
10946 return ret;
10947}
10948
10949/* Tweak magic VxWorks symbols as they are loaded. */
10950static bfd_boolean
10951ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10952 struct bfd_link_info *info,
10953 Elf_Internal_Sym *sym,
10954 const char **namep ATTRIBUTE_UNUSED,
10955 flagword *flagsp ATTRIBUTE_UNUSED,
10956 asection **secp,
10957 bfd_vma *valp)
10958{
10959 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10960 valp))
10961 return FALSE;
10962
10963 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10964}
10965
9d8504b1
PB
10966static void
10967ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10968{
10969 ppc_elf_final_write_processing(abfd, linker);
10970 elf_vxworks_final_write_processing(abfd, linker);
10971}
10972
10973/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10974 define it. */
10975#undef elf_backend_want_plt_sym
10976#define elf_backend_want_plt_sym 1
10977#undef elf_backend_want_got_plt
10978#define elf_backend_want_got_plt 1
10979#undef elf_backend_got_symbol_offset
10980#define elf_backend_got_symbol_offset 0
10981#undef elf_backend_plt_not_loaded
10982#define elf_backend_plt_not_loaded 0
10983#undef elf_backend_plt_readonly
10984#define elf_backend_plt_readonly 1
10985#undef elf_backend_got_header_size
10986#define elf_backend_got_header_size 12
10987
468392fb
AM
10988#undef bfd_elf32_get_synthetic_symtab
10989
9d8504b1
PB
10990#undef bfd_elf32_bfd_link_hash_table_create
10991#define bfd_elf32_bfd_link_hash_table_create \
10992 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
10993#undef elf_backend_add_symbol_hook
10994#define elf_backend_add_symbol_hook \
10995 ppc_elf_vxworks_add_symbol_hook
10996#undef elf_backend_link_output_symbol_hook
10997#define elf_backend_link_output_symbol_hook \
9c72ff84 10998 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
10999#undef elf_backend_final_write_processing
11000#define elf_backend_final_write_processing \
11001 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
11002#undef elf_backend_get_sec_type_attr
11003#define elf_backend_get_sec_type_attr \
11004 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
11005#undef elf_backend_emit_relocs
11006#define elf_backend_emit_relocs \
11007 elf_vxworks_emit_relocs
11008
11009#undef elf32_bed
11010#define elf32_bed ppc_elf_vxworks_bed
e054468f 11011#undef elf_backend_post_process_headers
9d8504b1
PB
11012
11013#include "elf32-target.h"
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