ppc apuinfo for spe parsed incorrectly
[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 {
64d29018 2044 (*_bfd_error_handler) (_("%B: unrecognised PPC reloc number: %d"),
cd21f5da
NC
2045 abfd, r_type);
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 {
2055 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
cd21f5da 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
2447/* Add the VLE flag if required. */
2448
2449bfd_boolean
2450ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2451{
2452 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2453 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2454 shdr->sh_flags |= SHF_PPC_VLE;
2455
2456 return TRUE;
2457}
2458
25dbc73a
AM
2459/* Return address for Ith PLT stub in section PLT, for relocation REL
2460 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 2461
25dbc73a
AM
2462static bfd_vma
2463ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2464 const asection *plt ATTRIBUTE_UNUSED,
2465 const arelent *rel)
2466{
2467 return rel->address;
2468}
deaaf2f3 2469
25dbc73a 2470/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
2471 is called when bfd_section_from_shdr finds a section with an unknown
2472 type. */
deaaf2f3 2473
25dbc73a 2474static bfd_boolean
6dc132d9
L
2475ppc_elf_section_from_shdr (bfd *abfd,
2476 Elf_Internal_Shdr *hdr,
2477 const char *name,
2478 int shindex)
25dbc73a
AM
2479{
2480 asection *newsect;
2481 flagword flags;
d1c6de6f 2482
6dc132d9 2483 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 2484 return FALSE;
deaaf2f3 2485
25dbc73a
AM
2486 newsect = hdr->bfd_section;
2487 flags = bfd_get_section_flags (abfd, newsect);
2488 if (hdr->sh_flags & SHF_EXCLUDE)
2489 flags |= SEC_EXCLUDE;
9abc968f 2490
25dbc73a
AM
2491 if (hdr->sh_type == SHT_ORDERED)
2492 flags |= SEC_SORT_ENTRIES;
d1c6de6f 2493
25dbc73a
AM
2494 bfd_set_section_flags (abfd, newsect, flags);
2495 return TRUE;
2496}
2497
2498/* Set up any other section flags and such that may be necessary. */
2499
2500static bfd_boolean
2501ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2502 Elf_Internal_Shdr *shdr,
2503 asection *asect)
2504{
25dbc73a
AM
2505 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2506 shdr->sh_type = SHT_ORDERED;
2507
2508 return TRUE;
2509}
2510
2511/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2512 need to bump up the number of section headers. */
2513
2514static int
a6b96beb
AM
2515ppc_elf_additional_program_headers (bfd *abfd,
2516 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM
2517{
2518 asection *s;
2519 int ret = 0;
d1c6de6f 2520
25dbc73a
AM
2521 s = bfd_get_section_by_name (abfd, ".sbss2");
2522 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2523 ++ret;
d1c6de6f 2524
25dbc73a
AM
2525 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2526 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2527 ++ret;
deaaf2f3 2528
25dbc73a
AM
2529 return ret;
2530}
deaaf2f3 2531
68ffbac6 2532/* Modify the segment map for VLE executables. */
b9c361e0
JL
2533
2534bfd_boolean
2535ppc_elf_modify_segment_map (bfd *abfd,
2536 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2537{
2538 struct elf_segment_map *m, *n;
2539 bfd_size_type amt;
2540 unsigned int j, k;
2541 bfd_boolean sect0_vle, sectj_vle;
2542
2543 /* At this point in the link, output sections have already been sorted by
2544 LMA and assigned to segments. All that is left to do is to ensure
2545 there is no mixing of VLE & non-VLE sections in a text segment.
2546 If we find that case, we split the segment.
2547 We maintain the original output section order. */
2548
12bd6957 2549 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
b9c361e0
JL
2550 {
2551 if (m->count == 0)
2552 continue;
2553
94caa966 2554 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
b9c361e0
JL
2555 for (j = 1; j < m->count; ++j)
2556 {
94caa966
AM
2557 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2558
2559 if (sectj_vle != sect0_vle)
b9c361e0
JL
2560 break;
2561 }
2562 if (j >= m->count)
2563 continue;
2564
b9c361e0
JL
2565 /* sections 0..j-1 stay in this (current) segment,
2566 the remainder are put in a new segment.
2567 The scan resumes with the new segment. */
2568
2569 /* Fix the new segment. */
2570 amt = sizeof (struct elf_segment_map);
2571 amt += (m->count - j - 1) * sizeof (asection *);
2572 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2573 if (n == NULL)
2574 return FALSE;
2575
2576 n->p_type = PT_LOAD;
2577 n->p_flags = PF_X | PF_R;
2578 if (sectj_vle)
2579 n->p_flags |= PF_PPC_VLE;
2580 n->count = m->count - j;
2581 for (k = 0; k < n->count; ++k)
2582 {
2583 n->sections[k] = m->sections[j+k];
2584 m->sections[j+k] = NULL;
2585 }
2586 n->next = m->next;
2587 m->next = n;
2588
2589 /* Fix the current segment */
2590 m->count = j;
2591 }
2592
2593 return TRUE;
2594}
2595
25dbc73a
AM
2596/* Add extra PPC sections -- Note, for now, make .sbss2 and
2597 .PPC.EMB.sbss0 a normal section, and not a bss section so
2598 that the linker doesn't crater when trying to make more than
2599 2 sections. */
e656e369 2600
b35d266b 2601static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 2602{
14b57c7c
AM
2603 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2604 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2605 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2606 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2607 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2608 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2609 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2610 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2611 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2612 { NULL, 0, 0, 0, 0 }
7f4d3958
L
2613};
2614
551b43fd
AM
2615/* This is what we want for new plt/got. */
2616static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 2617 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM
2618
2619static const struct bfd_elf_special_section *
2620ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 2621{
b35d266b 2622 const struct bfd_elf_special_section *ssect;
551b43fd
AM
2623
2624 /* See if this is one of the special sections. */
2625 if (sec->name == NULL)
2626 return NULL;
2627
2628 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2629 sec->use_rela_p);
2630 if (ssect != NULL)
2631 {
2632 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2633 ssect = &ppc_alt_plt;
2634 return ssect;
2635 }
2636
2637 return _bfd_elf_get_sec_type_attr (abfd, sec);
2638}
25dbc73a
AM
2639\f
2640/* Very simple linked list structure for recording apuinfo values. */
2641typedef struct apuinfo_list
2642{
2643 struct apuinfo_list *next;
2644 unsigned long value;
2645}
2646apuinfo_list;
e656e369 2647
25dbc73a 2648static apuinfo_list *head;
f2faa800 2649static bfd_boolean apuinfo_set;
deaaf2f3 2650
25dbc73a
AM
2651static void
2652apuinfo_list_init (void)
2653{
2654 head = NULL;
f2faa800 2655 apuinfo_set = FALSE;
25dbc73a 2656}
9abc968f 2657
25dbc73a
AM
2658static void
2659apuinfo_list_add (unsigned long value)
2660{
2661 apuinfo_list *entry = head;
deaaf2f3 2662
25dbc73a
AM
2663 while (entry != NULL)
2664 {
2665 if (entry->value == value)
2666 return;
2667 entry = entry->next;
2668 }
b4a38de6 2669
25dbc73a
AM
2670 entry = bfd_malloc (sizeof (* entry));
2671 if (entry == NULL)
2672 return;
e656e369 2673
25dbc73a
AM
2674 entry->value = value;
2675 entry->next = head;
2676 head = entry;
2677}
9abc968f 2678
25dbc73a
AM
2679static unsigned
2680apuinfo_list_length (void)
2681{
2682 apuinfo_list *entry;
2683 unsigned long count;
9abc968f 2684
25dbc73a
AM
2685 for (entry = head, count = 0;
2686 entry;
2687 entry = entry->next)
2688 ++ count;
e656e369 2689
25dbc73a
AM
2690 return count;
2691}
eea6121a 2692
25dbc73a
AM
2693static inline unsigned long
2694apuinfo_list_element (unsigned long number)
2695{
2696 apuinfo_list * entry;
e656e369 2697
25dbc73a
AM
2698 for (entry = head;
2699 entry && number --;
2700 entry = entry->next)
2701 ;
252b5132 2702
25dbc73a
AM
2703 return entry ? entry->value : 0;
2704}
2705
2706static void
2707apuinfo_list_finish (void)
2708{
2709 apuinfo_list *entry;
2710
2711 for (entry = head; entry;)
252b5132 2712 {
25dbc73a
AM
2713 apuinfo_list *next = entry->next;
2714 free (entry);
2715 entry = next;
2716 }
9abc968f 2717
25dbc73a
AM
2718 head = NULL;
2719}
9abc968f 2720
25dbc73a
AM
2721/* Scan the input BFDs and create a linked list of
2722 the APUinfo values that will need to be emitted. */
9abc968f 2723
25dbc73a
AM
2724static void
2725ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2726{
2727 bfd *ibfd;
2728 asection *asec;
deddc40b
NS
2729 char *buffer = NULL;
2730 bfd_size_type largest_input_size = 0;
25dbc73a 2731 unsigned i;
25dbc73a
AM
2732 unsigned long length;
2733 const char *error_message = NULL;
9abc968f 2734
25dbc73a
AM
2735 if (link_info == NULL)
2736 return;
9abc968f 2737
25dbc73a 2738 apuinfo_list_init ();
252b5132 2739
25dbc73a 2740 /* Read in the input sections contents. */
c72f2fb2 2741 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
252b5132 2742 {
25dbc73a 2743 unsigned long datum;
252b5132 2744
25dbc73a
AM
2745 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2746 if (asec == NULL)
2747 continue;
252b5132 2748
deddc40b 2749 error_message = _("corrupt %s section in %B");
25dbc73a 2750 length = asec->size;
deddc40b
NS
2751 if (length < 20)
2752 goto fail;
2753
f2faa800 2754 apuinfo_set = TRUE;
deddc40b 2755 if (largest_input_size < asec->size)
25dbc73a 2756 {
deddc40b
NS
2757 if (buffer)
2758 free (buffer);
2759 largest_input_size = asec->size;
2760 buffer = bfd_malloc (largest_input_size);
2761 if (!buffer)
2762 return;
25dbc73a 2763 }
5b914448 2764
25dbc73a 2765 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
deddc40b 2766 || (bfd_bread (buffer, length, ibfd) != length))
25dbc73a
AM
2767 {
2768 error_message = _("unable to read in %s section from %B");
2769 goto fail;
2770 }
252b5132 2771
25dbc73a
AM
2772 /* Verify the contents of the header. Note - we have to
2773 extract the values this way in order to allow for a
2774 host whose endian-ness is different from the target. */
deddc40b 2775 datum = bfd_get_32 (ibfd, buffer);
25dbc73a
AM
2776 if (datum != sizeof APUINFO_LABEL)
2777 goto fail;
252b5132 2778
deddc40b 2779 datum = bfd_get_32 (ibfd, buffer + 8);
25dbc73a
AM
2780 if (datum != 0x2)
2781 goto fail;
252b5132 2782
deddc40b 2783 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
25dbc73a 2784 goto fail;
252b5132 2785
25dbc73a 2786 /* Get the number of bytes used for apuinfo entries. */
deddc40b 2787 datum = bfd_get_32 (ibfd, buffer + 4);
25dbc73a
AM
2788 if (datum + 20 != length)
2789 goto fail;
2790
25dbc73a
AM
2791 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2792 for (i = 0; i < datum; i += 4)
deddc40b 2793 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
252b5132
RH
2794 }
2795
25dbc73a 2796 error_message = NULL;
252b5132 2797
f2faa800 2798 if (apuinfo_set)
deddc40b 2799 {
f2faa800
NS
2800 /* Compute the size of the output section. */
2801 unsigned num_entries = apuinfo_list_length ();
5b914448 2802
deddc40b
NS
2803 /* Set the output section size, if it exists. */
2804 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
f2faa800 2805
deddc40b
NS
2806 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2807 {
2808 ibfd = abfd;
2809 error_message = _("warning: unable to set size of %s section in %B");
2810 }
2811 }
25dbc73a
AM
2812
2813 fail:
deddc40b
NS
2814 if (buffer)
2815 free (buffer);
25dbc73a
AM
2816
2817 if (error_message)
2818 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2819}
252b5132 2820
25dbc73a
AM
2821/* Prevent the output section from accumulating the input sections'
2822 contents. We have already stored this in our linked list structure. */
252b5132 2823
25dbc73a
AM
2824static bfd_boolean
2825ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2826 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM
2827 asection *asec,
2828 bfd_byte *contents ATTRIBUTE_UNUSED)
2829{
f2faa800 2830 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
252b5132
RH
2831}
2832
25dbc73a
AM
2833/* Finally we can generate the output section. */
2834
2835static void
2836ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2837{
25dbc73a
AM
2838 bfd_byte *buffer;
2839 asection *asec;
2840 unsigned i;
2841 unsigned num_entries;
2842 bfd_size_type length;
7619e7c7 2843
25dbc73a
AM
2844 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2845 if (asec == NULL)
2846 return;
2847
f2faa800 2848 if (!apuinfo_set)
25dbc73a
AM
2849 return;
2850
2851 length = asec->size;
2852 if (length < 20)
2853 return;
2854
2855 buffer = bfd_malloc (length);
2856 if (buffer == NULL)
7619e7c7 2857 {
25dbc73a
AM
2858 (*_bfd_error_handler)
2859 (_("failed to allocate space for new APUinfo section."));
2860 return;
7619e7c7 2861 }
7619e7c7 2862
25dbc73a
AM
2863 /* Create the apuinfo header. */
2864 num_entries = apuinfo_list_length ();
2865 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2866 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2867 bfd_put_32 (abfd, 0x2, buffer + 8);
2868 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2869
25dbc73a
AM
2870 length = 20;
2871 for (i = 0; i < num_entries; i++)
feee612b 2872 {
25dbc73a
AM
2873 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2874 length += 4;
feee612b 2875 }
feee612b 2876
25dbc73a
AM
2877 if (length != asec->size)
2878 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2879
25dbc73a
AM
2880 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2881 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2882
25dbc73a
AM
2883 free (buffer);
2884
2885 apuinfo_list_finish ();
252b5132 2886}
25dbc73a 2887\f
7382d32a 2888static bfd_boolean
c6dd29ce 2889is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
7382d32a 2890{
c6dd29ce 2891 bfd_byte buf[GLINK_ENTRY_SIZE];
7382d32a 2892
c6dd29ce 2893 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
7382d32a
AM
2894 return FALSE;
2895
c6dd29ce
AM
2896 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2897 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2898 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2899 && bfd_get_32 (abfd, buf + 12) == BCTR);
7382d32a
AM
2900}
2901
468392fb
AM
2902static bfd_boolean
2903section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2904{
2905 bfd_vma vma = *(bfd_vma *) ptr;
2906 return ((section->flags & SEC_ALLOC) != 0
2907 && section->vma <= vma
2908 && vma < section->vma + section->size);
2909}
2910
2911static long
2912ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2913 long dynsymcount, asymbol **dynsyms,
2914 asymbol **ret)
2915{
2916 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2917 asection *plt, *relplt, *dynamic, *glink;
2918 bfd_vma glink_vma = 0;
2919 bfd_vma resolv_vma = 0;
2920 bfd_vma stub_vma;
2921 asymbol *s;
2922 arelent *p;
2923 long count, i;
2924 size_t size;
2925 char *names;
2926 bfd_byte buf[4];
2927
2928 *ret = NULL;
2929
2930 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2931 return 0;
2932
2933 if (dynsymcount <= 0)
2934 return 0;
2935
2936 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2937 if (relplt == NULL)
2938 return 0;
2939
2940 plt = bfd_get_section_by_name (abfd, ".plt");
2941 if (plt == NULL)
2942 return 0;
2943
2944 /* Call common code to handle old-style executable PLTs. */
2945 if (elf_section_flags (plt) & SHF_EXECINSTR)
2946 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2947 dynsymcount, dynsyms, ret);
2948
2949 /* If this object was prelinked, the prelinker stored the address
2950 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2951 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2952 if (dynamic != NULL)
2953 {
2954 bfd_byte *dynbuf, *extdyn, *extdynend;
2955 size_t extdynsize;
2956 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2957
2958 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2959 return -1;
2960
2961 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2962 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2963
2964 extdyn = dynbuf;
2965 extdynend = extdyn + dynamic->size;
2966 for (; extdyn < extdynend; extdyn += extdynsize)
2967 {
2968 Elf_Internal_Dyn dyn;
2969 (*swap_dyn_in) (abfd, extdyn, &dyn);
2970
2971 if (dyn.d_tag == DT_NULL)
2972 break;
2973
2974 if (dyn.d_tag == DT_PPC_GOT)
2975 {
2976 unsigned int g_o_t = dyn.d_un.d_val;
2977 asection *got = bfd_get_section_by_name (abfd, ".got");
2978 if (got != NULL
2979 && bfd_get_section_contents (abfd, got, buf,
2980 g_o_t - got->vma + 4, 4))
2981 glink_vma = bfd_get_32 (abfd, buf);
2982 break;
2983 }
2984 }
2985 free (dynbuf);
2986 }
2987
2988 /* Otherwise we read the first plt entry. */
2989 if (glink_vma == 0)
2990 {
2991 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2992 glink_vma = bfd_get_32 (abfd, buf);
2993 }
2994
2995 if (glink_vma == 0)
2996 return 0;
2997
2998 /* The .glink section usually does not survive the final
2999 link; search for the section (usually .text) where the
3000 glink stubs now reside. */
3001 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3002 if (glink == NULL)
3003 return 0;
3004
3005 /* Determine glink PLT resolver by reading the relative branch
3006 from the first glink stub. */
3007 if (bfd_get_section_contents (abfd, glink, buf,
3008 glink_vma - glink->vma, 4))
3009 {
3010 unsigned int insn = bfd_get_32 (abfd, buf);
3011
3012 /* The first glink stub may either branch to the resolver ... */
3013 insn ^= B;
3014 if ((insn & ~0x3fffffc) == 0)
3015 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3016
3017 /* ... or fall through a bunch of NOPs. */
3018 else if ((insn ^ B ^ NOP) == 0)
3019 for (i = 4;
3020 bfd_get_section_contents (abfd, glink, buf,
3021 glink_vma - glink->vma + i, 4);
3022 i += 4)
3023 if (bfd_get_32 (abfd, buf) != NOP)
3024 {
3025 resolv_vma = glink_vma + i;
3026 break;
3027 }
3028 }
3029
7382d32a 3030 count = relplt->size / sizeof (Elf32_External_Rela);
7382d32a
AM
3031 /* If the stubs are those for -shared/-pie then we might have
3032 multiple stubs for each plt entry. If that is the case then
3033 there is no way to associate stubs with their plt entries short
3034 of figuring out the GOT pointer value used in the stub. */
c6dd29ce
AM
3035 if (!is_nonpic_glink_stub (abfd, glink,
3036 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
7382d32a
AM
3037 return 0;
3038
468392fb
AM
3039 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3040 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3041 return -1;
3042
468392fb
AM
3043 size = count * sizeof (asymbol);
3044 p = relplt->relocation;
3045 for (i = 0; i < count; i++, p++)
e054468f
AM
3046 {
3047 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3048 if (p->addend != 0)
3049 size += sizeof ("+0x") - 1 + 8;
3050 }
468392fb
AM
3051
3052 size += sizeof (asymbol) + sizeof ("__glink");
3053
3054 if (resolv_vma)
3055 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3056
3057 s = *ret = bfd_malloc (size);
3058 if (s == NULL)
3059 return -1;
3060
1079403c 3061 stub_vma = glink_vma;
468392fb 3062 names = (char *) (s + count + 1 + (resolv_vma != 0));
1079403c
AM
3063 p = relplt->relocation + count - 1;
3064 for (i = 0; i < count; i++)
468392fb
AM
3065 {
3066 size_t len;
3067
3068 *s = **p->sym_ptr_ptr;
3069 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3070 we are defining a symbol, ensure one of them is set. */
3071 if ((s->flags & BSF_LOCAL) == 0)
3072 s->flags |= BSF_GLOBAL;
6ba2a415 3073 s->flags |= BSF_SYNTHETIC;
468392fb 3074 s->section = glink;
1079403c
AM
3075 stub_vma -= 16;
3076 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3077 stub_vma -= 32;
468392fb
AM
3078 s->value = stub_vma - glink->vma;
3079 s->name = names;
3080 s->udata.p = NULL;
3081 len = strlen ((*p->sym_ptr_ptr)->name);
3082 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3083 names += len;
e054468f
AM
3084 if (p->addend != 0)
3085 {
3086 memcpy (names, "+0x", sizeof ("+0x") - 1);
3087 names += sizeof ("+0x") - 1;
3088 bfd_sprintf_vma (abfd, names, p->addend);
3089 names += strlen (names);
3090 }
468392fb
AM
3091 memcpy (names, "@plt", sizeof ("@plt"));
3092 names += sizeof ("@plt");
3093 ++s;
1079403c 3094 --p;
468392fb
AM
3095 }
3096
3097 /* Add a symbol at the start of the glink branch table. */
86a4952b 3098 memset (s, 0, sizeof *s);
468392fb 3099 s->the_bfd = abfd;
6ba2a415 3100 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3101 s->section = glink;
3102 s->value = glink_vma - glink->vma;
3103 s->name = names;
3104 memcpy (names, "__glink", sizeof ("__glink"));
3105 names += sizeof ("__glink");
3106 s++;
3107 count++;
3108
3109 if (resolv_vma)
3110 {
3111 /* Add a symbol for the glink PLT resolver. */
86a4952b 3112 memset (s, 0, sizeof *s);
468392fb 3113 s->the_bfd = abfd;
6ba2a415 3114 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3115 s->section = glink;
3116 s->value = resolv_vma - glink->vma;
3117 s->name = names;
3118 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3119 names += sizeof ("__glink_PLTresolve");
3120 s++;
3121 count++;
3122 }
3123
3124 return count;
3125}
3126\f
25dbc73a
AM
3127/* The following functions are specific to the ELF linker, while
3128 functions above are used generally. They appear in this file more
3129 or less in the order in which they are called. eg.
3130 ppc_elf_check_relocs is called early in the link process,
3131 ppc_elf_finish_dynamic_sections is one of the last functions
3132 called. */
252b5132 3133
a6aa5195 3134/* Track PLT entries needed for a given symbol. We might need more
a877a2b6 3135 than one glink entry per symbol when generating a pic binary. */
a6aa5195
AM
3136struct plt_entry
3137{
3138 struct plt_entry *next;
3139
3140 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3141 This field stores the offset into .got2 used to initialise the
a877a2b6
AM
3142 GOT pointer reg. It will always be at least 32768. (Current
3143 gcc always uses an offset of 32768, but ld -r will pack .got2
3144 sections together resulting in larger offsets). */
a6aa5195
AM
3145 bfd_vma addend;
3146
3147 /* The .got2 section. */
3148 asection *sec;
3149
3150 /* PLT refcount or offset. */
3151 union
3152 {
3153 bfd_signed_vma refcount;
3154 bfd_vma offset;
3155 } plt;
3156
3157 /* .glink stub offset. */
3158 bfd_vma glink_offset;
3159};
3160
1d483afe 3161/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM
3162 selects those that must be copied when linking a shared library,
3163 even when the symbol is local. */
252b5132 3164
1d483afe
AM
3165static int
3166must_be_dyn_reloc (struct bfd_link_info *info,
3167 enum elf_ppc_reloc_type r_type)
3168{
3169 switch (r_type)
3170 {
3171 default:
3172 return 1;
3173
3174 case R_PPC_REL24:
3175 case R_PPC_REL14:
3176 case R_PPC_REL14_BRTAKEN:
3177 case R_PPC_REL14_BRNTAKEN:
3178 case R_PPC_REL32:
3179 return 0;
3180
3181 case R_PPC_TPREL32:
3182 case R_PPC_TPREL16:
3183 case R_PPC_TPREL16_LO:
3184 case R_PPC_TPREL16_HI:
3185 case R_PPC_TPREL16_HA:
0e1862bb 3186 return !bfd_link_executable (info);
1d483afe
AM
3187 }
3188}
252b5132 3189
25dbc73a
AM
3190/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3191 copying dynamic variables from a shared lib into an app's dynbss
3192 section, and instead use a dynamic relocation to point into the
3193 shared lib. */
3194#define ELIMINATE_COPY_RELOCS 1
252b5132 3195
f95f8542
AM
3196/* Used to track dynamic relocations for local symbols. */
3197struct ppc_dyn_relocs
3198{
3199 struct ppc_dyn_relocs *next;
3200
3201 /* The input section of the reloc. */
3202 asection *sec;
3203
3204 /* Total number of relocs copied for the input section. */
3205 unsigned int count : 31;
3206
3207 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3208 unsigned int ifunc : 1;
3209};
3210
25dbc73a 3211/* PPC ELF linker hash entry. */
252b5132 3212
25dbc73a
AM
3213struct ppc_elf_link_hash_entry
3214{
3215 struct elf_link_hash_entry elf;
252b5132 3216
25dbc73a
AM
3217 /* If this symbol is used in the linker created sections, the processor
3218 specific backend uses this field to map the field into the offset
3219 from the beginning of the section. */
3220 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 3221
25dbc73a 3222 /* Track dynamic relocs copied for this symbol. */
6061a67d 3223 struct elf_dyn_relocs *dyn_relocs;
252b5132 3224
25dbc73a
AM
3225 /* Contexts in which symbol is used in the GOT (or TOC).
3226 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3227 corresponding relocs are encountered during check_relocs.
3228 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3229 indicate the corresponding GOT entry type is not needed. */
3230#define TLS_GD 1 /* GD reloc. */
3231#define TLS_LD 2 /* LD reloc. */
3232#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3233#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3234#define TLS_TLS 16 /* Any TLS reloc. */
3235#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
e054468f 3236#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
25dbc73a 3237 char tls_mask;
4dc4a9a5
DJ
3238
3239 /* Nonzero if we have seen a small data relocation referring to this
3240 symbol. */
d3e454b9
AM
3241 unsigned char has_sda_refs : 1;
3242
3243 /* Flag use of given relocations. */
3244 unsigned char has_addr16_ha : 1;
3245 unsigned char has_addr16_lo : 1;
25dbc73a 3246};
252b5132 3247
25dbc73a
AM
3248#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3249
3250/* PPC ELF linker hash table. */
3251
3252struct ppc_elf_link_hash_table
3253{
3254 struct elf_link_hash_table elf;
3255
5446cbdf
AM
3256 /* Various options passed from the linker. */
3257 struct ppc_elf_params *params;
3258
25dbc73a
AM
3259 /* Short-cuts to get to dynamic linker sections. */
3260 asection *got;
3261 asection *relgot;
d7128ce4 3262 asection *glink;
25dbc73a
AM
3263 asection *plt;
3264 asection *relplt;
e054468f
AM
3265 asection *iplt;
3266 asection *reliplt;
25dbc73a
AM
3267 asection *dynbss;
3268 asection *relbss;
3269 asection *dynsbss;
3270 asection *relsbss;
c9a2f333 3271 elf_linker_section_t sdata[2];
25dbc73a 3272 asection *sbss;
6177242a 3273 asection *glink_eh_frame;
25dbc73a 3274
016687f8
AM
3275 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3276 asection *srelplt2;
3277
3278 /* The .got.plt section (VxWorks only)*/
3279 asection *sgotplt;
3280
1d483afe 3281 /* Shortcut to __tls_get_addr. */
25dbc73a 3282 struct elf_link_hash_entry *tls_get_addr;
252b5132 3283
016687f8
AM
3284 /* The bfd that forced an old-style PLT. */
3285 bfd *old_bfd;
5b914448 3286
25dbc73a
AM
3287 /* TLS local dynamic got entry handling. */
3288 union {
3289 bfd_signed_vma refcount;
3290 bfd_vma offset;
3291 } tlsld_got;
252b5132 3292
c6dd29ce 3293 /* Offset of branch table to PltResolve function in glink. */
d7128ce4
AM
3294 bfd_vma glink_pltresolve;
3295
3b36f7e6
AM
3296 /* Size of reserved GOT entries. */
3297 unsigned int got_header_size;
3298 /* Non-zero if allocating the header left a gap. */
3299 unsigned int got_gap;
3300
4a3dc543
RS
3301 /* The type of PLT we have chosen to use. */
3302 enum ppc_elf_plt_type plt_type;
3303
9d8504b1 3304 /* True if the target system is VxWorks. */
016687f8 3305 unsigned int is_vxworks:1;
9d8504b1
PB
3306
3307 /* The size of PLT entries. */
3308 int plt_entry_size;
3309 /* The distance between adjacent PLT slots. */
3310 int plt_slot_size;
3311 /* The size of the first PLT entry. */
3312 int plt_initial_entry_size;
016687f8 3313
87d72d41
AM
3314 /* Small local sym cache. */
3315 struct sym_cache sym_cache;
25dbc73a 3316};
252b5132 3317
94caa966
AM
3318/* Rename some of the generic section flags to better document how they
3319 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3320
3321/* Nonzero if this section has TLS related relocations. */
3322#define has_tls_reloc sec_flg0
3323
3324/* Nonzero if this section has a call to __tls_get_addr. */
3325#define has_tls_get_addr_call sec_flg1
3326
25dbc73a 3327/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 3328
25dbc73a 3329#define ppc_elf_hash_table(p) \
4dfe6ac6
NC
3330 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3331 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
252b5132 3332
25dbc73a 3333/* Create an entry in a PPC ELF linker hash table. */
252b5132 3334
25dbc73a
AM
3335static struct bfd_hash_entry *
3336ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3337 struct bfd_hash_table *table,
3338 const char *string)
252b5132 3339{
25dbc73a
AM
3340 /* Allocate the structure if it has not already been allocated by a
3341 subclass. */
3342 if (entry == NULL)
3343 {
3344 entry = bfd_hash_allocate (table,
3345 sizeof (struct ppc_elf_link_hash_entry));
3346 if (entry == NULL)
3347 return entry;
3348 }
252b5132 3349
25dbc73a
AM
3350 /* Call the allocation method of the superclass. */
3351 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3352 if (entry != NULL)
3353 {
3354 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3355 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3356 ppc_elf_hash_entry (entry)->tls_mask = 0;
5240d94d 3357 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
25dbc73a 3358 }
252b5132 3359
25dbc73a 3360 return entry;
252b5132 3361}
3dab13f6 3362
25dbc73a 3363/* Create a PPC ELF linker hash table. */
3dab13f6 3364
25dbc73a
AM
3365static struct bfd_link_hash_table *
3366ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 3367{
25dbc73a 3368 struct ppc_elf_link_hash_table *ret;
76e7a751
AM
3369 static struct ppc_elf_params default_params
3370 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0 };
3dab13f6 3371
25dbc73a
AM
3372 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3373 if (ret == NULL)
3374 return NULL;
3dab13f6 3375
66eb6687
AM
3376 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3377 ppc_elf_link_hash_newfunc,
4dfe6ac6
NC
3378 sizeof (struct ppc_elf_link_hash_entry),
3379 PPC32_ELF_DATA))
3dab13f6 3380 {
25dbc73a
AM
3381 free (ret);
3382 return NULL;
3383 }
58111eb7 3384
a6aa5195
AM
3385 ret->elf.init_plt_refcount.refcount = 0;
3386 ret->elf.init_plt_refcount.glist = NULL;
3387 ret->elf.init_plt_offset.offset = 0;
3388 ret->elf.init_plt_offset.glist = NULL;
3389
db434ba0
AM
3390 ret->params = &default_params;
3391
c9a2f333
AM
3392 ret->sdata[0].name = ".sdata";
3393 ret->sdata[0].sym_name = "_SDA_BASE_";
3394 ret->sdata[0].bss_name = ".sbss";
3395
3396 ret->sdata[1].name = ".sdata2";
3397 ret->sdata[1].sym_name = "_SDA2_BASE_";
3398 ret->sdata[1].bss_name = ".sbss2";
3399
9d8504b1
PB
3400 ret->plt_entry_size = 12;
3401 ret->plt_slot_size = 8;
3402 ret->plt_initial_entry_size = 72;
9d8504b1 3403
25dbc73a
AM
3404 return &ret->elf.root;
3405}
3dab13f6 3406
5446cbdf
AM
3407/* Hook linker params into hash table. */
3408
3409void
3410ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3411{
3412 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3413
3414 if (htab)
3415 htab->params = params;
76e7a751 3416 params->pagesize_p2 = bfd_log2 (params->pagesize);
5446cbdf
AM
3417}
3418
9d8504b1 3419/* Create .got and the related sections. */
3dab13f6 3420
25dbc73a
AM
3421static bfd_boolean
3422ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3423{
3424 struct ppc_elf_link_hash_table *htab;
3425 asection *s;
3426 flagword flags;
3dab13f6 3427
25dbc73a
AM
3428 if (!_bfd_elf_create_got_section (abfd, info))
3429 return FALSE;
3dab13f6 3430
25dbc73a 3431 htab = ppc_elf_hash_table (info);
3d4d4302 3432 htab->got = s = bfd_get_linker_section (abfd, ".got");
25dbc73a
AM
3433 if (s == NULL)
3434 abort ();
3dab13f6 3435
9d8504b1
PB
3436 if (htab->is_vxworks)
3437 {
3d4d4302 3438 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
9d8504b1
PB
3439 if (!htab->sgotplt)
3440 abort ();
3441 }
3442 else
3443 {
3444 /* The powerpc .got has a blrl instruction in it. Mark it
3445 executable. */
3446 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3447 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3448 if (!bfd_set_section_flags (abfd, s, flags))
3449 return FALSE;
3450 }
3dab13f6 3451
3d4d4302 3452 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
64e77c6d
L
3453 if (!htab->relgot)
3454 abort ();
3dab13f6 3455
25dbc73a
AM
3456 return TRUE;
3457}
3dab13f6 3458
93d1b056
AM
3459/* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3460 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3461 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3462
3463static bfd_boolean
3464ppc_elf_create_linker_section (bfd *abfd,
3465 struct bfd_link_info *info,
3466 flagword flags,
3467 elf_linker_section_t *lsect)
3468{
3469 asection *s;
3470
3471 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3472 | SEC_LINKER_CREATED);
3473
3474 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3475 if (s == NULL)
3476 return FALSE;
3477 lsect->section = s;
3478
3479 /* Define the sym on the first section of this name. */
3480 s = bfd_get_section_by_name (abfd, lsect->name);
3481
3482 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3483 if (lsect->sym == NULL)
3484 return FALSE;
3485 lsect->sym->root.u.def.value = 0x8000;
3486 return TRUE;
3487}
3488
e054468f
AM
3489static bfd_boolean
3490ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3491{
3492 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3493 asection *s;
3494 flagword flags;
3495
3496 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3497 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3498 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3499 htab->glink = s;
3500 if (s == NULL
5446cbdf
AM
3501 || !bfd_set_section_alignment (abfd, s,
3502 htab->params->ppc476_workaround ? 6 : 4))
e054468f
AM
3503 return FALSE;
3504
6177242a
AM
3505 if (!info->no_ld_generated_unwind_info)
3506 {
3507 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3508 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3509 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3510 htab->glink_eh_frame = s;
3511 if (s == NULL
3512 || !bfd_set_section_alignment (abfd, s, 2))
3513 return FALSE;
3514 }
3515
e054468f
AM
3516 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3517 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3518 htab->iplt = s;
3519 if (s == NULL
3520 || !bfd_set_section_alignment (abfd, s, 4))
3521 return FALSE;
3522
3523 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3524 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3525 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
e054468f
AM
3526 htab->reliplt = s;
3527 if (s == NULL
3528 || ! bfd_set_section_alignment (abfd, s, 2))
3529 return FALSE;
93d1b056
AM
3530
3531 if (!ppc_elf_create_linker_section (abfd, info, 0,
3532 &htab->sdata[0]))
3533 return FALSE;
3534
3535 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3536 &htab->sdata[1]))
3537 return FALSE;
3538
e054468f
AM
3539 return TRUE;
3540}
3541
25dbc73a
AM
3542/* We have to create .dynsbss and .rela.sbss here so that they get mapped
3543 to output sections (just like _bfd_elf_create_dynamic_sections has
3544 to create .dynbss and .rela.bss). */
3dab13f6 3545
25dbc73a
AM
3546static bfd_boolean
3547ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3548{
3549 struct ppc_elf_link_hash_table *htab;
3550 asection *s;
3551 flagword flags;
3dab13f6 3552
25dbc73a 3553 htab = ppc_elf_hash_table (info);
3dab13f6 3554
25dbc73a
AM
3555 if (htab->got == NULL
3556 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
3557 return FALSE;
3558
25dbc73a
AM
3559 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3560 return FALSE;
3dab13f6 3561
e054468f
AM
3562 if (htab->glink == NULL
3563 && !ppc_elf_create_glink (abfd, info))
d7128ce4 3564 return FALSE;
3dab13f6 3565
3d4d4302 3566 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
14b2f831
AM
3567 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3568 SEC_ALLOC | SEC_LINKER_CREATED);
3b36f7e6 3569 htab->dynsbss = s;
3496cb2a 3570 if (s == NULL)
25dbc73a 3571 return FALSE;
3dab13f6 3572
0e1862bb 3573 if (! bfd_link_pic (info))
25dbc73a 3574 {
3d4d4302 3575 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
e054468f
AM
3576 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3577 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3578 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 3579 htab->relsbss = s;
25dbc73a 3580 if (s == NULL
25dbc73a
AM
3581 || ! bfd_set_section_alignment (abfd, s, 2))
3582 return FALSE;
3583 }
3dab13f6 3584
711de32c
RS
3585 if (htab->is_vxworks
3586 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3587 return FALSE;
9d8504b1 3588
3d4d4302
AM
3589 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3590 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
25dbc73a
AM
3591 if (s == NULL)
3592 abort ();
3dab13f6 3593
3b36f7e6 3594 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
3595 if (htab->plt_type == PLT_VXWORKS)
3596 /* The VxWorks PLT is a loaded section with contents. */
3597 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
3598 return bfd_set_section_flags (abfd, s, flags);
3599}
3dab13f6 3600
25dbc73a 3601/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 3602
25dbc73a 3603static void
fcfa13d2 3604ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
3605 struct elf_link_hash_entry *dir,
3606 struct elf_link_hash_entry *ind)
3607{
3608 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 3609
25dbc73a
AM
3610 edir = (struct ppc_elf_link_hash_entry *) dir;
3611 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 3612
c79d6685
AM
3613 edir->tls_mask |= eind->tls_mask;
3614 edir->has_sda_refs |= eind->has_sda_refs;
3615
3616 /* If called to transfer flags for a weakdef during processing
3617 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3618 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3619 if (!(ELIMINATE_COPY_RELOCS
3620 && eind->elf.root.type != bfd_link_hash_indirect
3621 && edir->elf.dynamic_adjusted))
3622 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3623
3624 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3625 edir->elf.ref_regular |= eind->elf.ref_regular;
3626 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3627 edir->elf.needs_plt |= eind->elf.needs_plt;
3628 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3629
25dbc73a
AM
3630 if (eind->dyn_relocs != NULL)
3631 {
3632 if (edir->dyn_relocs != NULL)
3dab13f6 3633 {
6061a67d
AM
3634 struct elf_dyn_relocs **pp;
3635 struct elf_dyn_relocs *p;
3dab13f6 3636
fcfa13d2 3637 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
3638 list. Merge any entries against the same section. */
3639 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 3640 {
6061a67d 3641 struct elf_dyn_relocs *q;
25dbc73a
AM
3642
3643 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3644 if (q->sec == p->sec)
3645 {
3646 q->pc_count += p->pc_count;
3647 q->count += p->count;
3648 *pp = p->next;
3649 break;
3650 }
3651 if (q == NULL)
3652 pp = &p->next;
3dab13f6 3653 }
25dbc73a 3654 *pp = edir->dyn_relocs;
3dab13f6 3655 }
25dbc73a
AM
3656
3657 edir->dyn_relocs = eind->dyn_relocs;
3658 eind->dyn_relocs = NULL;
3dab13f6 3659 }
3dab13f6 3660
68ba6d40
AM
3661 /* If we were called to copy over info for a weak sym, that's all.
3662 You might think dyn_relocs need not be copied over; After all,
3663 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 3664 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM
3665 code in ppc_elf_adjust_dynamic_symbol needs to check for
3666 dyn_relocs in read-only sections, and it does so on what is the
3667 DIR sym here. */
3668 if (eind->elf.root.type != bfd_link_hash_indirect)
3669 return;
3670
a6aa5195
AM
3671 /* Copy over the GOT refcount entries that we may have already seen to
3672 the symbol which just became indirect. */
fcfa13d2
AM
3673 edir->elf.got.refcount += eind->elf.got.refcount;
3674 eind->elf.got.refcount = 0;
a6aa5195
AM
3675
3676 /* And plt entries. */
3677 if (eind->elf.plt.plist != NULL)
3678 {
3679 if (edir->elf.plt.plist != NULL)
3680 {
3681 struct plt_entry **entp;
3682 struct plt_entry *ent;
3683
3684 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3685 {
3686 struct plt_entry *dent;
3687
3688 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3689 if (dent->sec == ent->sec && dent->addend == ent->addend)
3690 {
3691 dent->plt.refcount += ent->plt.refcount;
3692 *entp = ent->next;
3693 break;
3694 }
3695 if (dent == NULL)
3696 entp = &ent->next;
3697 }
3698 *entp = edir->elf.plt.plist;
3699 }
3700
3701 edir->elf.plt.plist = eind->elf.plt.plist;
3702 eind->elf.plt.plist = NULL;
3703 }
3704
fcfa13d2 3705 if (eind->elf.dynindx != -1)
25dbc73a 3706 {
fcfa13d2
AM
3707 if (edir->elf.dynindx != -1)
3708 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3709 edir->elf.dynstr_index);
a6aa5195
AM
3710 edir->elf.dynindx = eind->elf.dynindx;
3711 edir->elf.dynstr_index = eind->elf.dynstr_index;
3712 eind->elf.dynindx = -1;
3713 eind->elf.dynstr_index = 0;
25dbc73a 3714 }
25dbc73a 3715}
3dab13f6 3716
25dbc73a
AM
3717/* Hook called by the linker routine which adds symbols from an object
3718 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3719
25dbc73a
AM
3720static bfd_boolean
3721ppc_elf_add_symbol_hook (bfd *abfd,
3722 struct bfd_link_info *info,
3723 Elf_Internal_Sym *sym,
3724 const char **namep ATTRIBUTE_UNUSED,
3725 flagword *flagsp ATTRIBUTE_UNUSED,
3726 asection **secp,
3727 bfd_vma *valp)
3728{
3729 if (sym->st_shndx == SHN_COMMON
0e1862bb 3730 && !bfd_link_relocatable (info)
0c8d6e5c
AM
3731 && is_ppc_elf (info->output_bfd)
3732 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
3733 {
3734 /* Common symbols less than or equal to -G nn bytes are automatically
3735 put into .sbss. */
3736 struct ppc_elf_link_hash_table *htab;
3dab13f6 3737
25dbc73a
AM
3738 htab = ppc_elf_hash_table (info);
3739 if (htab->sbss == NULL)
3740 {
644285ef 3741 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3742
644285ef
AM
3743 if (!htab->elf.dynobj)
3744 htab->elf.dynobj = abfd;
3745
3496cb2a
L
3746 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3747 ".sbss",
3748 flags);
3749 if (htab->sbss == NULL)
25dbc73a 3750 return FALSE;
3dab13f6 3751 }
3dab13f6 3752
25dbc73a
AM
3753 *secp = htab->sbss;
3754 *valp = sym->st_size;
3755 }
3dab13f6 3756
a43942db 3757 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
f1885d1e
AM
3758 && (abfd->flags & DYNAMIC) == 0
3759 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
a43942db 3760 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
e054468f 3761
25dbc73a 3762 return TRUE;
3dab13f6
AM
3763}
3764\f
25dbc73a
AM
3765/* Find a linker generated pointer with a given addend and type. */
3766
3767static elf_linker_section_pointers_t *
3768elf_find_pointer_linker_section
3769 (elf_linker_section_pointers_t *linker_pointers,
3770 bfd_vma addend,
3771 elf_linker_section_t *lsect)
252b5132 3772{
25dbc73a
AM
3773 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3774 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3775 return linker_pointers;
252b5132 3776
25dbc73a
AM
3777 return NULL;
3778}
3779
3780/* Allocate a pointer to live in a linker created section. */
3781
3782static bfd_boolean
93d1b056
AM
3783elf_allocate_pointer_linker_section (bfd *abfd,
3784 elf_linker_section_t *lsect,
3785 struct elf_link_hash_entry *h,
3786 const Elf_Internal_Rela *rel)
25dbc73a
AM
3787{
3788 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3789 elf_linker_section_pointers_t *linker_section_ptr;
3790 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3791 bfd_size_type amt;
3792
3793 BFD_ASSERT (lsect != NULL);
3794
3795 /* Is this a global symbol? */
3796 if (h != NULL)
3797 {
3798 struct ppc_elf_link_hash_entry *eh;
3799
3800 /* Has this symbol already been allocated? If so, our work is done. */
3801 eh = (struct ppc_elf_link_hash_entry *) h;
3802 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3803 rel->r_addend,
3804 lsect))
3805 return TRUE;
3806
3807 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3808 }
3809 else
3810 {
0c8d6e5c 3811 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3812
25dbc73a
AM
3813 /* Allocation of a pointer to a local symbol. */
3814 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3815
3816 /* Allocate a table to hold the local symbols if first time. */
3817 if (!ptr)
3818 {
0ffa91dd 3819 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3820
3821 amt = num_symbols;
3822 amt *= sizeof (elf_linker_section_pointers_t *);
3823 ptr = bfd_zalloc (abfd, amt);
3824
3825 if (!ptr)
3826 return FALSE;
3827
3828 elf_local_ptr_offsets (abfd) = ptr;
3829 }
3830
3831 /* Has this symbol already been allocated? If so, our work is done. */
3832 if (elf_find_pointer_linker_section (ptr[r_symndx],
3833 rel->r_addend,
3834 lsect))
3835 return TRUE;
252b5132 3836
25dbc73a 3837 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3838 }
41fcb14e 3839
25dbc73a
AM
3840 /* Allocate space for a pointer in the linker section, and allocate
3841 a new pointer record from internal memory. */
3842 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3843 amt = sizeof (elf_linker_section_pointers_t);
3844 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3845
25dbc73a 3846 if (!linker_section_ptr)
7619e7c7 3847 return FALSE;
41fcb14e 3848
25dbc73a
AM
3849 linker_section_ptr->next = *ptr_linker_section_ptr;
3850 linker_section_ptr->addend = rel->r_addend;
3851 linker_section_ptr->lsect = lsect;
25dbc73a 3852 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3853
93d1b056
AM
3854 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3855 return FALSE;
25dbc73a
AM
3856 linker_section_ptr->offset = lsect->section->size;
3857 lsect->section->size += 4;
7619e7c7 3858
25dbc73a
AM
3859#ifdef DEBUG
3860 fprintf (stderr,
3861 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3862 lsect->name, (long) linker_section_ptr->offset,
3863 (long) lsect->section->size);
3864#endif
7619e7c7
AM
3865
3866 return TRUE;
41fcb14e
AM
3867}
3868
e054468f 3869static struct plt_entry **
25dbc73a
AM
3870update_local_sym_info (bfd *abfd,
3871 Elf_Internal_Shdr *symtab_hdr,
3872 unsigned long r_symndx,
3873 int tls_type)
252b5132 3874{
25dbc73a 3875 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
e054468f 3876 struct plt_entry **local_plt;
25dbc73a 3877 char *local_got_tls_masks;
252b5132 3878
25dbc73a 3879 if (local_got_refcounts == NULL)
252b5132 3880 {
25dbc73a
AM
3881 bfd_size_type size = symtab_hdr->sh_info;
3882
e054468f
AM
3883 size *= (sizeof (*local_got_refcounts)
3884 + sizeof (*local_plt)
3885 + sizeof (*local_got_tls_masks));
25dbc73a
AM
3886 local_got_refcounts = bfd_zalloc (abfd, size);
3887 if (local_got_refcounts == NULL)
e054468f 3888 return NULL;
25dbc73a 3889 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3890 }
41fcb14e 3891
e054468f
AM
3892 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3893 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
25dbc73a 3894 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
3895 if (tls_type != PLT_IFUNC)
3896 local_got_refcounts[r_symndx] += 1;
3897 return local_plt + r_symndx;
25dbc73a 3898}
41fcb14e 3899
a6aa5195 3900static bfd_boolean
3ec01793 3901update_plt_info (bfd *abfd, struct plt_entry **plist,
a6aa5195
AM
3902 asection *sec, bfd_vma addend)
3903{
3904 struct plt_entry *ent;
3905
32af9f6e
AM
3906 if (addend < 32768)
3907 sec = NULL;
3ec01793 3908 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3909 if (ent->sec == sec && ent->addend == addend)
3910 break;
3911 if (ent == NULL)
3912 {
3913 bfd_size_type amt = sizeof (*ent);
3914 ent = bfd_alloc (abfd, amt);
3915 if (ent == NULL)
3916 return FALSE;
3ec01793 3917 ent->next = *plist;
a6aa5195
AM
3918 ent->sec = sec;
3919 ent->addend = addend;
3920 ent->plt.refcount = 0;
3ec01793 3921 *plist = ent;
a6aa5195
AM
3922 }
3923 ent->plt.refcount += 1;
3924 return TRUE;
3925}
3926
3927static struct plt_entry *
3ec01793 3928find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
a6aa5195
AM
3929{
3930 struct plt_entry *ent;
3931
3932 if (addend < 32768)
3933 sec = NULL;
3ec01793 3934 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3935 if (ent->sec == sec && ent->addend == addend)
3936 break;
3937 return ent;
3938}
3939
e054468f
AM
3940static bfd_boolean
3941is_branch_reloc (enum elf_ppc_reloc_type r_type)
3942{
3943 return (r_type == R_PPC_PLTREL24
3944 || r_type == R_PPC_LOCAL24PC
3945 || r_type == R_PPC_REL24
3946 || r_type == R_PPC_REL14
3947 || r_type == R_PPC_REL14_BRTAKEN
3948 || r_type == R_PPC_REL14_BRNTAKEN
3949 || r_type == R_PPC_ADDR24
3950 || r_type == R_PPC_ADDR14
3951 || r_type == R_PPC_ADDR14_BRTAKEN
dfdaec14
AJ
3952 || r_type == R_PPC_ADDR14_BRNTAKEN
3953 || r_type == R_PPC_VLE_REL24);
e054468f
AM
3954}
3955
25dbc73a
AM
3956static void
3957bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3958{
3959 (*_bfd_error_handler)
3960 (_("%B: relocation %s cannot be used when making a shared object"),
3961 abfd,
3962 ppc_elf_howto_table[r_type]->name);
3963 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3964}
3965
25dbc73a
AM
3966/* Look through the relocs for a section during the first phase, and
3967 allocate space in the global offset table or procedure linkage
3968 table. */
252b5132 3969
b34976b6 3970static bfd_boolean
25dbc73a
AM
3971ppc_elf_check_relocs (bfd *abfd,
3972 struct bfd_link_info *info,
3973 asection *sec,
3974 const Elf_Internal_Rela *relocs)
252b5132 3975{
7619e7c7 3976 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3977 Elf_Internal_Shdr *symtab_hdr;
3978 struct elf_link_hash_entry **sym_hashes;
3979 const Elf_Internal_Rela *rel;
3980 const Elf_Internal_Rela *rel_end;
a6aa5195 3981 asection *got2, *sreloc;
727fc41e 3982 struct elf_link_hash_entry *tga;
25dbc73a 3983
0e1862bb 3984 if (bfd_link_relocatable (info))
25dbc73a 3985 return TRUE;
252b5132 3986
c87b5a93
AM
3987 /* Don't do anything special with non-loaded, non-alloced sections.
3988 In particular, any relocs in such sections should not affect GOT
3989 and PLT reference counting (ie. we don't allow them to create GOT
3990 or PLT entries), there's no possibility or desire to optimize TLS
3991 relocs, and there's not much point in propagating relocs to shared
3992 libs that the dynamic linker won't relocate. */
3993 if ((sec->flags & SEC_ALLOC) == 0)
3994 return TRUE;
3995
252b5132 3996#ifdef DEBUG
25dbc73a
AM
3997 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3998 sec, abfd);
252b5132
RH
3999#endif
4000
0c8d6e5c 4001 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 4002
25dbc73a
AM
4003 /* Initialize howto table if not already done. */
4004 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4005 ppc_elf_howto_init ();
4006
7619e7c7 4007 htab = ppc_elf_hash_table (info);
25f23106
AM
4008 if (htab->glink == NULL)
4009 {
4010 if (htab->elf.dynobj == NULL)
4011 htab->elf.dynobj = abfd;
4012 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4013 return FALSE;
4014 }
727fc41e
AM
4015 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4016 FALSE, FALSE, TRUE);
0ffa91dd 4017 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 4018 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 4019 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4020 sreloc = NULL;
4021
4022 rel_end = relocs + sec->reloc_count;
4023 for (rel = relocs; rel < rel_end; rel++)
4024 {
4025 unsigned long r_symndx;
4026 enum elf_ppc_reloc_type r_type;
4027 struct elf_link_hash_entry *h;
727fc41e 4028 int tls_type;
cbf95972 4029 struct plt_entry **ifunc;
25dbc73a
AM
4030
4031 r_symndx = ELF32_R_SYM (rel->r_info);
4032 if (r_symndx < symtab_hdr->sh_info)
4033 h = NULL;
4034 else
973a3492
L
4035 {
4036 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4037 while (h->root.type == bfd_link_hash_indirect
4038 || h->root.type == bfd_link_hash_warning)
4039 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM
4040
4041 /* PR15323, ref flags aren't set for references in the same
4042 object. */
4043 h->root.non_ir_ref = 1;
973a3492 4044 }
25dbc73a
AM
4045
4046 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4047 This shows up in particular in an R_PPC_ADDR32 in the eabi
4048 startup code. */
3b36f7e6
AM
4049 if (h != NULL
4050 && htab->got == NULL
4051 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 4052 {
3b36f7e6
AM
4053 if (htab->elf.dynobj == NULL)
4054 htab->elf.dynobj = abfd;
4055 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4056 return FALSE;
4057 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 4058 }
252b5132 4059
727fc41e 4060 tls_type = 0;
de972ffa 4061 r_type = ELF32_R_TYPE (rel->r_info);
cbf95972 4062 ifunc = NULL;
06a162cf 4063 if (h == NULL && !htab->is_vxworks)
e054468f 4064 {
06a162cf
AM
4065 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4066 abfd, r_symndx);
4067 if (isym == NULL)
4068 return FALSE;
4069
0bed072f 4070 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
e054468f 4071 {
0bed072f 4072 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
06a162cf
AM
4073 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4074 PLT_IFUNC);
4075 if (ifunc == NULL)
e054468f
AM
4076 return FALSE;
4077
06a162cf
AM
4078 /* STT_GNU_IFUNC symbols must have a PLT entry;
4079 In a non-pie executable even when there are
4080 no plt calls. */
0e1862bb 4081 if (!bfd_link_pic (info)
0bed072f 4082 || is_branch_reloc (r_type))
e054468f 4083 {
0bed072f
AM
4084 bfd_vma addend = 0;
4085 if (r_type == R_PPC_PLTREL24)
4086 {
4087 ppc_elf_tdata (abfd)->makes_plt_call = 1;
0e1862bb 4088 if (bfd_link_pic (info))
0bed072f
AM
4089 addend = rel->r_addend;
4090 }
4091 if (!update_plt_info (abfd, ifunc, got2, addend))
4092 return FALSE;
e054468f
AM
4093 }
4094 }
25f23106
AM
4095 }
4096
de972ffa
AM
4097 if (!htab->is_vxworks
4098 && is_branch_reloc (r_type)
4099 && h != NULL
4100 && h == tga)
25f23106 4101 {
de972ffa
AM
4102 if (rel != relocs
4103 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4104 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4105 /* We have a new-style __tls_get_addr call with a marker
4106 reloc. */
4107 ;
4108 else
4109 /* Mark this section as having an old-style call. */
4110 sec->has_tls_get_addr_call = 1;
e054468f 4111 }
727fc41e 4112
25dbc73a
AM
4113 switch (r_type)
4114 {
727fc41e
AM
4115 case R_PPC_TLSGD:
4116 case R_PPC_TLSLD:
4117 /* These special tls relocs tie a call to __tls_get_addr with
4118 its parameter symbol. */
4119 break;
4120
25dbc73a
AM
4121 case R_PPC_GOT_TLSLD16:
4122 case R_PPC_GOT_TLSLD16_LO:
4123 case R_PPC_GOT_TLSLD16_HI:
4124 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4125 tls_type = TLS_TLS | TLS_LD;
4126 goto dogottls;
252b5132 4127
25dbc73a
AM
4128 case R_PPC_GOT_TLSGD16:
4129 case R_PPC_GOT_TLSGD16_LO:
4130 case R_PPC_GOT_TLSGD16_HI:
4131 case R_PPC_GOT_TLSGD16_HA:
4132 tls_type = TLS_TLS | TLS_GD;
4133 goto dogottls;
4134
4135 case R_PPC_GOT_TPREL16:
4136 case R_PPC_GOT_TPREL16_LO:
4137 case R_PPC_GOT_TPREL16_HI:
4138 case R_PPC_GOT_TPREL16_HA:
0e1862bb 4139 if (bfd_link_pic (info))
25dbc73a
AM
4140 info->flags |= DF_STATIC_TLS;
4141 tls_type = TLS_TLS | TLS_TPREL;
4142 goto dogottls;
4143
4144 case R_PPC_GOT_DTPREL16:
4145 case R_PPC_GOT_DTPREL16_LO:
4146 case R_PPC_GOT_DTPREL16_HI:
4147 case R_PPC_GOT_DTPREL16_HA:
4148 tls_type = TLS_TLS | TLS_DTPREL;
4149 dogottls:
4150 sec->has_tls_reloc = 1;
4151 /* Fall thru */
252b5132 4152
25dbc73a
AM
4153 /* GOT16 relocations */
4154 case R_PPC_GOT16:
4155 case R_PPC_GOT16_LO:
4156 case R_PPC_GOT16_HI:
4157 case R_PPC_GOT16_HA:
4158 /* This symbol requires a global offset table entry. */
4159 if (htab->got == NULL)
4160 {
4161 if (htab->elf.dynobj == NULL)
4162 htab->elf.dynobj = abfd;
4163 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4164 return FALSE;
4165 }
4166 if (h != NULL)
4167 {
4168 h->got.refcount += 1;
4169 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4170 }
4171 else
4172 /* This is a global offset table entry for a local symbol. */
4173 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4174 return FALSE;
91e21fb7
AM
4175
4176 /* We may also need a plt entry if the symbol turns out to be
4177 an ifunc. */
0e1862bb 4178 if (h != NULL && !bfd_link_pic (info))
91e21fb7
AM
4179 {
4180 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4181 return FALSE;
4182 }
25dbc73a 4183 break;
252b5132 4184
25dbc73a
AM
4185 /* Indirect .sdata relocation. */
4186 case R_PPC_EMB_SDAI16:
0e1862bb 4187 if (bfd_link_pic (info))
25dbc73a
AM
4188 {
4189 bad_shared_reloc (abfd, r_type);
4190 return FALSE;
4191 }
93d1b056
AM
4192 htab->sdata[0].sym->ref_regular = 1;
4193 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4194 h, rel))
25dbc73a 4195 return FALSE;
046183de
AM
4196 if (h != NULL)
4197 {
4198 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4199 h->non_got_ref = TRUE;
4200 }
25dbc73a 4201 break;
252b5132 4202
25dbc73a
AM
4203 /* Indirect .sdata2 relocation. */
4204 case R_PPC_EMB_SDA2I16:
0e1862bb 4205 if (bfd_link_pic (info))
25dbc73a
AM
4206 {
4207 bad_shared_reloc (abfd, r_type);
4208 return FALSE;
4209 }
93d1b056
AM
4210 htab->sdata[1].sym->ref_regular = 1;
4211 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4212 h, rel))
25dbc73a 4213 return FALSE;
046183de
AM
4214 if (h != NULL)
4215 {
4216 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4217 h->non_got_ref = TRUE;
4218 }
25dbc73a 4219 break;
252b5132 4220
93d1b056
AM
4221 case R_PPC_SDAREL16:
4222 htab->sdata[0].sym->ref_regular = 1;
4223 /* Fall thru */
4224
b9c361e0
JL
4225 case R_PPC_VLE_SDAREL_LO16A:
4226 case R_PPC_VLE_SDAREL_LO16D:
4227 case R_PPC_VLE_SDAREL_HI16A:
4228 case R_PPC_VLE_SDAREL_HI16D:
4229 case R_PPC_VLE_SDAREL_HA16A:
4230 case R_PPC_VLE_SDAREL_HA16D:
046183de
AM
4231 if (h != NULL)
4232 {
4233 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4234 h->non_got_ref = TRUE;
4235 }
4236 break;
4237
b9c361e0
JL
4238 case R_PPC_VLE_REL8:
4239 case R_PPC_VLE_REL15:
4240 case R_PPC_VLE_REL24:
4241 case R_PPC_VLE_LO16A:
4242 case R_PPC_VLE_LO16D:
4243 case R_PPC_VLE_HI16A:
4244 case R_PPC_VLE_HI16D:
4245 case R_PPC_VLE_HA16A:
4246 case R_PPC_VLE_HA16D:
4247 break;
4248
25dbc73a 4249 case R_PPC_EMB_SDA2REL:
0e1862bb 4250 if (bfd_link_pic (info))
046183de
AM
4251 {
4252 bad_shared_reloc (abfd, r_type);
4253 return FALSE;
4254 }
93d1b056 4255 htab->sdata[1].sym->ref_regular = 1;
046183de
AM
4256 if (h != NULL)
4257 {
4258 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4259 h->non_got_ref = TRUE;
4260 }
4261 break;
4262
b9c361e0
JL
4263 case R_PPC_VLE_SDA21_LO:
4264 case R_PPC_VLE_SDA21:
25dbc73a
AM
4265 case R_PPC_EMB_SDA21:
4266 case R_PPC_EMB_RELSDA:
0e1862bb 4267 if (bfd_link_pic (info))
046183de
AM
4268 {
4269 bad_shared_reloc (abfd, r_type);
4270 return FALSE;
4271 }
046183de
AM
4272 if (h != NULL)
4273 {
4274 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4275 h->non_got_ref = TRUE;
4276 }
4277 break;
4278
25dbc73a
AM
4279 case R_PPC_EMB_NADDR32:
4280 case R_PPC_EMB_NADDR16:
4281 case R_PPC_EMB_NADDR16_LO:
4282 case R_PPC_EMB_NADDR16_HI:
4283 case R_PPC_EMB_NADDR16_HA:
0e1862bb 4284 if (bfd_link_pic (info))
25dbc73a
AM
4285 {
4286 bad_shared_reloc (abfd, r_type);
4287 return FALSE;
4288 }
4dc4a9a5 4289 if (h != NULL)
046183de 4290 h->non_got_ref = TRUE;
25dbc73a 4291 break;
252b5132 4292
25dbc73a 4293 case R_PPC_PLTREL24:
de972ffa 4294 if (h == NULL)
6d78d0b9
AM
4295 break;
4296 /* Fall through */
4297 case R_PPC_PLT32:
25dbc73a
AM
4298 case R_PPC_PLTREL32:
4299 case R_PPC_PLT16_LO:
4300 case R_PPC_PLT16_HI:
4301 case R_PPC_PLT16_HA:
4302#ifdef DEBUG
4303 fprintf (stderr, "Reloc requires a PLT entry\n");
4304#endif
cbf95972 4305 /* This symbol requires a procedure linkage table entry. */
25dbc73a
AM
4306 if (h == NULL)
4307 {
cbf95972
AM
4308 if (ifunc == NULL)
4309 {
4310 /* It does not make sense to have a procedure linkage
4311 table entry for a non-ifunc local symbol. */
4312 info->callbacks->einfo
4313 (_("%P: %H: %s reloc against local symbol\n"),
4314 abfd, sec, rel->r_offset,
4315 ppc_elf_howto_table[r_type]->name);
4316 bfd_set_error (bfd_error_bad_value);
4317 return FALSE;
4318 }
25dbc73a 4319 }
a6aa5195
AM
4320 else
4321 {
016687f8 4322 bfd_vma addend = 0;
ee05f2fe 4323
016687f8
AM
4324 if (r_type == R_PPC_PLTREL24)
4325 {
4326 ppc_elf_tdata (abfd)->makes_plt_call = 1;
0e1862bb 4327 if (bfd_link_pic (info))
a877a2b6 4328 addend = rel->r_addend;
016687f8 4329 }
a6aa5195 4330 h->needs_plt = 1;
32af9f6e 4331 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
a6aa5195
AM
4332 return FALSE;
4333 }
25dbc73a 4334 break;
ee05f2fe 4335
25dbc73a
AM
4336 /* The following relocations don't need to propagate the
4337 relocation if linking a shared object since they are
4338 section relative. */
4339 case R_PPC_SECTOFF:
4340 case R_PPC_SECTOFF_LO:
4341 case R_PPC_SECTOFF_HI:
4342 case R_PPC_SECTOFF_HA:
4343 case R_PPC_DTPREL16:
4344 case R_PPC_DTPREL16_LO:
4345 case R_PPC_DTPREL16_HI:
4346 case R_PPC_DTPREL16_HA:
4347 case R_PPC_TOC16:
4348 break;
252b5132 4349
d7128ce4
AM
4350 case R_PPC_REL16:
4351 case R_PPC_REL16_LO:
4352 case R_PPC_REL16_HI:
4353 case R_PPC_REL16_HA:
a680de9a 4354 case R_PPC_REL16DX_HA:
016687f8 4355 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
4356 break;
4357
a6aa5195 4358 /* These are just markers. */
25dbc73a
AM
4359 case R_PPC_TLS:
4360 case R_PPC_EMB_MRKREF:
4361 case R_PPC_NONE:
4362 case R_PPC_max:
32af9f6e
AM
4363 case R_PPC_RELAX:
4364 case R_PPC_RELAX_PLT:
4365 case R_PPC_RELAX_PLTREL24:
25dbc73a 4366 break;
252b5132 4367
25dbc73a
AM
4368 /* These should only appear in dynamic objects. */
4369 case R_PPC_COPY:
4370 case R_PPC_GLOB_DAT:
4371 case R_PPC_JMP_SLOT:
4372 case R_PPC_RELATIVE:
e054468f 4373 case R_PPC_IRELATIVE:
25dbc73a 4374 break;
252b5132 4375
25dbc73a
AM
4376 /* These aren't handled yet. We'll report an error later. */
4377 case R_PPC_ADDR30:
4378 case R_PPC_EMB_RELSEC16:
4379 case R_PPC_EMB_RELST_LO:
4380 case R_PPC_EMB_RELST_HI:
4381 case R_PPC_EMB_RELST_HA:
4382 case R_PPC_EMB_BIT_FLD:
4383 break;
252b5132 4384
25dbc73a
AM
4385 /* This refers only to functions defined in the shared library. */
4386 case R_PPC_LOCAL24PC:
727fc41e 4387 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
4388 {
4389 htab->plt_type = PLT_OLD;
4390 htab->old_bfd = abfd;
4391 }
c7e17e05
AM
4392 if (h != NULL && h->type == STT_GNU_IFUNC)
4393 {
c7e17e05
AM
4394 h->needs_plt = 1;
4395 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4396 return FALSE;
4397 }
25dbc73a 4398 break;
252b5132 4399
25dbc73a
AM
4400 /* This relocation describes the C++ object vtable hierarchy.
4401 Reconstruct it for later use during GC. */
4402 case R_PPC_GNU_VTINHERIT:
4403 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4404 return FALSE;
4405 break;
252b5132 4406
25dbc73a
AM
4407 /* This relocation describes which C++ vtable entries are actually
4408 used. Record for later use during GC. */
4409 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
4410 BFD_ASSERT (h != NULL);
4411 if (h != NULL
4412 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
4413 return FALSE;
4414 break;
252b5132 4415
25dbc73a
AM
4416 /* We shouldn't really be seeing these. */
4417 case R_PPC_TPREL32:
1d483afe
AM
4418 case R_PPC_TPREL16:
4419 case R_PPC_TPREL16_LO:
4420 case R_PPC_TPREL16_HI:
4421 case R_PPC_TPREL16_HA:
0e1862bb 4422 if (bfd_link_pic (info))
25dbc73a
AM
4423 info->flags |= DF_STATIC_TLS;
4424 goto dodyn;
252b5132 4425
25dbc73a
AM
4426 /* Nor these. */
4427 case R_PPC_DTPMOD32:
4428 case R_PPC_DTPREL32:
4429 goto dodyn;
252b5132 4430
9edfd1af
AM
4431 case R_PPC_REL32:
4432 if (h == NULL
4433 && got2 != NULL
4434 && (sec->flags & SEC_CODE) != 0
0e1862bb 4435 && bfd_link_pic (info)
4a3dc543 4436 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
4437 {
4438 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4439 the start of a function, which assembles to a REL32
4440 reference to .got2. If we detect one of these, then
4441 force the old PLT layout because the linker cannot
4442 reliably deduce the GOT pointer value needed for
4443 PLT call stubs. */
4444 asection *s;
87d72d41 4445 Elf_Internal_Sym *isym;
9edfd1af 4446
87d72d41
AM
4447 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4448 abfd, r_symndx);
4449 if (isym == NULL)
4450 return FALSE;
4451
4452 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
9edfd1af 4453 if (s == got2)
016687f8
AM
4454 {
4455 htab->plt_type = PLT_OLD;
4456 htab->old_bfd = abfd;
4457 }
9edfd1af 4458 }
7123df0e 4459 if (h == NULL || h == htab->elf.hgot)
fd38b44c 4460 break;
625af618
AM
4461 /* fall through */
4462
4463 case R_PPC_ADDR32:
4464 case R_PPC_ADDR16:
4465 case R_PPC_ADDR16_LO:
4466 case R_PPC_ADDR16_HI:
4467 case R_PPC_ADDR16_HA:
4468 case R_PPC_UADDR32:
4469 case R_PPC_UADDR16:
0e1862bb 4470 if (h != NULL && !bfd_link_pic (info))
625af618
AM
4471 {
4472 /* We may need a plt entry if the symbol turns out to be
4473 a function defined in a dynamic object. */
3ec01793 4474 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
625af618
AM
4475 return FALSE;
4476
4477 /* We may need a copy reloc too. */
4478 h->non_got_ref = 1;
4479 h->pointer_equality_needed = 1;
d3e454b9
AM
4480 if (r_type == R_PPC_ADDR16_HA)
4481 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4482 if (r_type == R_PPC_ADDR16_LO)
4483 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
625af618
AM
4484 }
4485 goto dodyn;
9edfd1af 4486
25dbc73a
AM
4487 case R_PPC_REL24:
4488 case R_PPC_REL14:
4489 case R_PPC_REL14_BRTAKEN:
4490 case R_PPC_REL14_BRNTAKEN:
d7128ce4 4491 if (h == NULL)
25dbc73a 4492 break;
7123df0e 4493 if (h == htab->elf.hgot)
d7128ce4 4494 {
7123df0e 4495 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4496 {
4497 htab->plt_type = PLT_OLD;
4498 htab->old_bfd = abfd;
4499 }
d7128ce4
AM
4500 break;
4501 }
25dbc73a 4502 /* fall through */
ee05f2fe 4503
25dbc73a 4504 case R_PPC_ADDR24:
25dbc73a
AM
4505 case R_PPC_ADDR14:
4506 case R_PPC_ADDR14_BRTAKEN:
4507 case R_PPC_ADDR14_BRNTAKEN:
0e1862bb 4508 if (h != NULL && !bfd_link_pic (info))
25dbc73a
AM
4509 {
4510 /* We may need a plt entry if the symbol turns out to be
4511 a function defined in a dynamic object. */
e054468f 4512 h->needs_plt = 1;
de972ffa 4513 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
a6aa5195 4514 return FALSE;
625af618 4515 break;
25dbc73a 4516 }
7619e7c7 4517
25dbc73a
AM
4518 dodyn:
4519 /* If we are creating a shared library, and this is a reloc
4520 against a global symbol, or a non PC relative reloc
4521 against a local symbol, then we need to copy the reloc
4522 into the shared library. However, if we are linking with
4523 -Bsymbolic, we do not need to copy a reloc against a
4524 global symbol which is defined in an object we are
4525 including in the link (i.e., DEF_REGULAR is set). At
4526 this point we have not seen all the input files, so it is
4527 possible that DEF_REGULAR is not set now but will be set
4528 later (it is never cleared). In case of a weak definition,
4529 DEF_REGULAR may be cleared later by a strong definition in
4530 a shared library. We account for that possibility below by
4531 storing information in the dyn_relocs field of the hash
4532 table entry. A similar situation occurs when creating
4533 shared libraries and symbol visibility changes render the
4534 symbol local.
7619e7c7 4535
25dbc73a
AM
4536 If on the other hand, we are creating an executable, we
4537 may need to keep relocations for symbols satisfied by a
4538 dynamic library if we manage to avoid copy relocs for the
4539 symbol. */
0e1862bb 4540 if ((bfd_link_pic (info)
1d483afe 4541 && (must_be_dyn_reloc (info, r_type)
25dbc73a 4542 || (h != NULL
198f1157 4543 && (!SYMBOLIC_BIND (info, h)
25dbc73a
AM
4544 || h->root.type == bfd_link_hash_defweak
4545 || !h->def_regular))))
4546 || (ELIMINATE_COPY_RELOCS
0e1862bb 4547 && !bfd_link_pic (info)
25dbc73a
AM
4548 && h != NULL
4549 && (h->root.type == bfd_link_hash_defweak
de972ffa 4550 || !h->def_regular)))
25dbc73a 4551 {
25dbc73a
AM
4552#ifdef DEBUG
4553 fprintf (stderr,
4554 "ppc_elf_check_relocs needs to "
4555 "create relocation for %s\n",
4556 (h && h->root.root.string
4557 ? h->root.root.string : "<unknown>"));
4558#endif
4559 if (sreloc == NULL)
4560 {
c9a2f333
AM
4561 if (htab->elf.dynobj == NULL)
4562 htab->elf.dynobj = abfd;
83bac4b0
NC
4563
4564 sreloc = _bfd_elf_make_dynamic_reloc_section
4565 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4566
25dbc73a 4567 if (sreloc == NULL)
83bac4b0 4568 return FALSE;
25dbc73a 4569 }
7619e7c7 4570
25dbc73a
AM
4571 /* If this is a global symbol, we count the number of
4572 relocations we need for this symbol. */
4573 if (h != NULL)
4574 {
f95f8542
AM
4575 struct elf_dyn_relocs *p;
4576 struct elf_dyn_relocs **rel_head;
4577
91d6fa6a 4578 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
f95f8542
AM
4579 p = *rel_head;
4580 if (p == NULL || p->sec != sec)
4581 {
4582 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4583 if (p == NULL)
4584 return FALSE;
4585 p->next = *rel_head;
4586 *rel_head = p;
4587 p->sec = sec;
4588 p->count = 0;
4589 p->pc_count = 0;
4590 }
4591 p->count += 1;
4592 if (!must_be_dyn_reloc (info, r_type))
4593 p->pc_count += 1;
25dbc73a
AM
4594 }
4595 else
4596 {
4597 /* Track dynamic relocs needed for local syms too.
4598 We really need local syms available to do this
4599 easily. Oh well. */
f95f8542
AM
4600 struct ppc_dyn_relocs *p;
4601 struct ppc_dyn_relocs **rel_head;
4602 bfd_boolean is_ifunc;
25dbc73a 4603 asection *s;
6edfbbad 4604 void *vpp;
87d72d41 4605 Elf_Internal_Sym *isym;
6edfbbad 4606
87d72d41
AM
4607 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4608 abfd, r_symndx);
4609 if (isym == NULL)
25dbc73a 4610 return FALSE;
7fce784e 4611
87d72d41
AM
4612 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4613 if (s == NULL)
4614 s = sec;
4615
6edfbbad 4616 vpp = &elf_section_data (s)->local_dynrel;
f95f8542
AM
4617 rel_head = (struct ppc_dyn_relocs **) vpp;
4618 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4619 p = *rel_head;
4620 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4621 p = p->next;
4622 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4623 {
4624 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4625 if (p == NULL)
4626 return FALSE;
4627 p->next = *rel_head;
4628 *rel_head = p;
4629 p->sec = sec;
4630 p->ifunc = is_ifunc;
4631 p->count = 0;
4632 }
4633 p->count += 1;
25dbc73a 4634 }
7619e7c7 4635 }
25dbc73a
AM
4636
4637 break;
7619e7c7
AM
4638 }
4639 }
ee05f2fe 4640
25dbc73a
AM
4641 return TRUE;
4642}
4643\f
34c8bcba
JM
4644
4645/* Merge object attributes from IBFD into OBFD. Raise an error if
4646 there are conflicting attributes. */
4647static bfd_boolean
4648ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4649{
c6e65352
DJ
4650 obj_attribute *in_attr, *in_attrs;
4651 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM
4652
4653 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4654 {
4655 /* This is the first object. Copy the attributes. */
4656 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4657
4658 /* Use the Tag_null value to indicate the attributes have been
4659 initialized. */
4660 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4661
4662 return TRUE;
4663 }
4664
c6e65352
DJ
4665 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4666 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4667
34c8bcba
JM
4668 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4669 non-conflicting ones. */
c6e65352
DJ
4670 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4671 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4672 if (in_attr->i != out_attr->i)
34c8bcba 4673 {
c6e65352
DJ
4674 out_attr->type = 1;
4675 if (out_attr->i == 0)
4676 out_attr->i = in_attr->i;
4677 else if (in_attr->i == 0)
34c8bcba 4678 ;
c6e65352 4679 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM
4680 _bfd_error_handler
4681 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3c7b9897
AM
4682 else if (out_attr->i == 1 && in_attr->i == 3)
4683 _bfd_error_handler
5b914448 4684 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3c7b9897
AM
4685 obfd, ibfd);
4686 else if (out_attr->i == 3 && in_attr->i == 1)
4687 _bfd_error_handler
5b914448 4688 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3c7b9897
AM
4689 ibfd, obfd);
4690 else if (out_attr->i == 3 && in_attr->i == 2)
4691 _bfd_error_handler
5b914448 4692 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3c7b9897
AM
4693 ibfd, obfd);
4694 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
34c8bcba
JM
4695 _bfd_error_handler
4696 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3c7b9897 4697 else if (in_attr->i > 3)
34c8bcba
JM
4698 _bfd_error_handler
4699 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 4700 in_attr->i);
34c8bcba
JM
4701 else
4702 _bfd_error_handler
4703 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ
4704 out_attr->i);
4705 }
4706
4707 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4708 merge non-conflicting ones. */
4709 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4710 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4711 if (in_attr->i != out_attr->i)
4712 {
4713 const char *in_abi = NULL, *out_abi = NULL;
4714
4715 switch (in_attr->i)
4716 {
4717 case 1: in_abi = "generic"; break;
4718 case 2: in_abi = "AltiVec"; break;
4719 case 3: in_abi = "SPE"; break;
4720 }
4721
4722 switch (out_attr->i)
4723 {
4724 case 1: out_abi = "generic"; break;
4725 case 2: out_abi = "AltiVec"; break;
4726 case 3: out_abi = "SPE"; break;
4727 }
4728
4729 out_attr->type = 1;
4730 if (out_attr->i == 0)
4731 out_attr->i = in_attr->i;
4732 else if (in_attr->i == 0)
4733 ;
4734 /* For now, allow generic to transition to AltiVec or SPE
4735 without a warning. If GCC marked files with their stack
4736 alignment and used don't-care markings for files which are
4737 not affected by the vector ABI, we could warn about this
4738 case too. */
4739 else if (out_attr->i == 1)
4740 out_attr->i = in_attr->i;
4741 else if (in_attr->i == 1)
4742 ;
4743 else if (in_abi == NULL)
4744 _bfd_error_handler
4745 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4746 in_attr->i);
4747 else if (out_abi == NULL)
4748 _bfd_error_handler
4749 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4750 in_attr->i);
4751 else
4752 _bfd_error_handler
4753 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4754 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM
4755 }
4756
f82e0623
NF
4757 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4758 and merge non-conflicting ones. */
4759 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4760 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4761 if (in_attr->i != out_attr->i)
4762 {
4763 out_attr->type = 1;
4764 if (out_attr->i == 0)
4765 out_attr->i = in_attr->i;
4766 else if (in_attr->i == 0)
4767 ;
4768 else if (out_attr->i == 1 && in_attr->i == 2)
4769 _bfd_error_handler
4770 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4771 else if (out_attr->i == 2 && in_attr->i == 1)
4772 _bfd_error_handler
4773 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4774 else if (in_attr->i > 2)
4775 _bfd_error_handler
4776 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4777 in_attr->i);
4778 else
4779 _bfd_error_handler
4780 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4781 out_attr->i);
4782 }
4783
34c8bcba
JM
4784 /* Merge Tag_compatibility attributes and any common GNU ones. */
4785 _bfd_elf_merge_object_attributes (ibfd, obfd);
4786
4787 return TRUE;
4788}
4789
8853c3d3
AM
4790/* Merge backend specific data from an object file to the output
4791 object file when linking. */
4792
4793static bfd_boolean
4794ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4795{
4796 flagword old_flags;
4797 flagword new_flags;
4798 bfd_boolean error;
4799
0c8d6e5c 4800 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4801 return TRUE;
4802
cc643b88 4803 /* Check if we have the same endianness. */
8853c3d3
AM
4804 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4805 return FALSE;
4806
34c8bcba
JM
4807 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4808 return FALSE;
4809
8853c3d3
AM
4810 new_flags = elf_elfheader (ibfd)->e_flags;
4811 old_flags = elf_elfheader (obfd)->e_flags;
4812 if (!elf_flags_init (obfd))
4813 {
4814 /* First call, no flags set. */
4815 elf_flags_init (obfd) = TRUE;
4816 elf_elfheader (obfd)->e_flags = new_flags;
4817 }
4818
4819 /* Compatible flags are ok. */
4820 else if (new_flags == old_flags)
4821 ;
4822
4823 /* Incompatible flags. */
4824 else
4825 {
4826 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4827 to be linked with either. */
4828 error = FALSE;
4829 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4830 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4831 {
4832 error = TRUE;
4833 (*_bfd_error_handler)
4834 (_("%B: compiled with -mrelocatable and linked with "
4835 "modules compiled normally"), ibfd);
4836 }
4837 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4838 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4839 {
4840 error = TRUE;
4841 (*_bfd_error_handler)
4842 (_("%B: compiled normally and linked with "
4843 "modules compiled with -mrelocatable"), ibfd);
4844 }
4845
4846 /* The output is -mrelocatable-lib iff both the input files are. */
4847 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4848 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4849
4850 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4851 but each input file is either -mrelocatable or -mrelocatable-lib. */
4852 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4853 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4854 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4855 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4856
4857 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4858 any module uses it. */
4859 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4860
4861 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4862 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4863
4864 /* Warn about any other mismatches. */
4865 if (new_flags != old_flags)
4866 {
4867 error = TRUE;
4868 (*_bfd_error_handler)
4869 (_("%B: uses different e_flags (0x%lx) fields "
4870 "than previous modules (0x%lx)"),
4871 ibfd, (long) new_flags, (long) old_flags);
4872 }
4873
4874 if (error)
4875 {
4876 bfd_set_error (bfd_error_bad_value);
4877 return FALSE;
4878 }
4879 }
4880
4881 return TRUE;
4882}
b9c361e0
JL
4883
4884static void
86c95733
AM
4885ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4886 bfd_vma value,
4887 split16_format_type split16_format)
b9c361e0
JL
4888
4889{
86c95733 4890 unsigned int insn, top5;
b9c361e0 4891
86c95733
AM
4892 insn = bfd_get_32 (output_bfd, loc);
4893 top5 = value & 0xf800;
4894 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
dfdaec14 4895 insn &= (split16_format == split16a_type ? ~0x1f007ff : ~0x1f07ff);
b9c361e0 4896 insn |= top5;
86c95733
AM
4897 insn |= value & 0x7ff;
4898 bfd_put_32 (output_bfd, insn, loc);
b9c361e0
JL
4899}
4900
8853c3d3 4901\f
d7128ce4
AM
4902/* Choose which PLT scheme to use, and set .plt flags appropriately.
4903 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4904int
4905ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
5446cbdf 4906 struct bfd_link_info *info)
d7128ce4
AM
4907{
4908 struct ppc_elf_link_hash_table *htab;
9d8504b1 4909 flagword flags;
d7128ce4
AM
4910
4911 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4912
4913 if (htab->plt_type == PLT_UNSET)
016687f8 4914 {
b3874e1a
AM
4915 struct elf_link_hash_entry *h;
4916
5446cbdf 4917 if (htab->params->plt_style == PLT_OLD)
016687f8 4918 htab->plt_type = PLT_OLD;
0e1862bb 4919 else if (bfd_link_pic (info)
b3874e1a
AM
4920 && htab->elf.dynamic_sections_created
4921 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4922 FALSE, FALSE, TRUE)) != NULL
4923 && (h->type == STT_FUNC
4924 || h->needs_plt)
4925 && h->ref_regular
4926 && !(SYMBOL_CALLS_LOCAL (info, h)
4927 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4928 && h->root.type == bfd_link_hash_undefweak)))
4929 {
4930 /* Profiling of shared libs (and pies) is not supported with
4931 secure plt, because ppc32 does profiling before a
4932 function prologue and a secure plt pic call stubs needs
4933 r30 to be set up. */
4934 htab->plt_type = PLT_OLD;
4935 }
016687f8
AM
4936 else
4937 {
4938 bfd *ibfd;
5446cbdf 4939 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
016687f8
AM
4940
4941 /* Look through the reloc flags left by ppc_elf_check_relocs.
4942 Use the old style bss plt if a file makes plt calls
4943 without using the new relocs, and if ld isn't given
4944 --secure-plt and we never see REL16 relocs. */
4945 if (plt_type == PLT_UNSET)
4946 plt_type = PLT_OLD;
c72f2fb2 4947 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
0c8d6e5c 4948 if (is_ppc_elf (ibfd))
016687f8
AM
4949 {
4950 if (ppc_elf_tdata (ibfd)->has_rel16)
4951 plt_type = PLT_NEW;
4952 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4953 {
4954 plt_type = PLT_OLD;
4955 htab->old_bfd = ibfd;
4956 break;
4957 }
4958 }
4959 htab->plt_type = plt_type;
4960 }
4961 }
5446cbdf 4962 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
b3874e1a
AM
4963 {
4964 if (htab->old_bfd != NULL)
4965 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4966 htab->old_bfd);
4967 else
4968 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4969 }
d7128ce4 4970
4a3dc543 4971 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4972
4a3dc543 4973 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
4974 {
4975 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4976 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
4977
4978 /* The new PLT is a loaded section. */
4979 if (htab->plt != NULL
4980 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4981 return -1;
4982
4983 /* The new GOT is not executable. */
4984 if (htab->got != NULL
4985 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4986 return -1;
d7128ce4
AM
4987 }
4988 else
4989 {
4990 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
4991 if (htab->glink != NULL
4992 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4993 return -1;
d7128ce4 4994 }
4a3dc543 4995 return htab->plt_type == PLT_NEW;
d7128ce4
AM
4996}
4997\f
25dbc73a
AM
4998/* Return the section that should be marked against GC for a given
4999 relocation. */
586119b3 5000
25dbc73a
AM
5001static asection *
5002ppc_elf_gc_mark_hook (asection *sec,
07adf181 5003 struct bfd_link_info *info,
25dbc73a
AM
5004 Elf_Internal_Rela *rel,
5005 struct elf_link_hash_entry *h,
5006 Elf_Internal_Sym *sym)
5007{
5008 if (h != NULL)
07adf181
AM
5009 switch (ELF32_R_TYPE (rel->r_info))
5010 {
5011 case R_PPC_GNU_VTINHERIT:
5012 case R_PPC_GNU_VTENTRY:
5013 return NULL;
5014 }
5015
5016 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 5017}
a876ecf9 5018
25dbc73a
AM
5019/* Update the got, plt and dynamic reloc reference counts for the
5020 section being removed. */
5021
5022static bfd_boolean
5023ppc_elf_gc_sweep_hook (bfd *abfd,
5024 struct bfd_link_info *info,
5025 asection *sec,
5026 const Elf_Internal_Rela *relocs)
5027{
5028 struct ppc_elf_link_hash_table *htab;
5029 Elf_Internal_Shdr *symtab_hdr;
5030 struct elf_link_hash_entry **sym_hashes;
5031 bfd_signed_vma *local_got_refcounts;
5032 const Elf_Internal_Rela *rel, *relend;
a6aa5195 5033 asection *got2;
25dbc73a 5034
0e1862bb 5035 if (bfd_link_relocatable (info))
7dda2462
TG
5036 return TRUE;
5037
c87b5a93
AM
5038 if ((sec->flags & SEC_ALLOC) == 0)
5039 return TRUE;
5040
25dbc73a
AM
5041 elf_section_data (sec)->local_dynrel = NULL;
5042
5043 htab = ppc_elf_hash_table (info);
0ffa91dd 5044 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
5045 sym_hashes = elf_sym_hashes (abfd);
5046 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 5047 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
5048
5049 relend = relocs + sec->reloc_count;
5050 for (rel = relocs; rel < relend; rel++)
5051 {
5052 unsigned long r_symndx;
5053 enum elf_ppc_reloc_type r_type;
5054 struct elf_link_hash_entry *h = NULL;
5055
5056 r_symndx = ELF32_R_SYM (rel->r_info);
5057 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 5058 {
6061a67d 5059 struct elf_dyn_relocs **pp, *p;
25dbc73a
AM
5060 struct ppc_elf_link_hash_entry *eh;
5061
5062 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5063 while (h->root.type == bfd_link_hash_indirect
5064 || h->root.type == bfd_link_hash_warning)
5065 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5066 eh = (struct ppc_elf_link_hash_entry *) h;
5067
5068 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5069 if (p->sec == sec)
5070 {
5071 /* Everything must go for SEC. */
5072 *pp = p->next;
5073 break;
5074 }
a876ecf9 5075 }
ee05f2fe 5076
25dbc73a 5077 r_type = ELF32_R_TYPE (rel->r_info);
de972ffa
AM
5078 if (!htab->is_vxworks
5079 && h == NULL
5080 && local_got_refcounts != NULL
0e1862bb 5081 && (!bfd_link_pic (info)
de972ffa 5082 || is_branch_reloc (r_type)))
e054468f 5083 {
de972ffa
AM
5084 struct plt_entry **local_plt = (struct plt_entry **)
5085 (local_got_refcounts + symtab_hdr->sh_info);
5086 char *local_got_tls_masks = (char *)
5087 (local_plt + symtab_hdr->sh_info);
5088 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
e054468f 5089 {
de972ffa 5090 struct plt_entry **ifunc = local_plt + r_symndx;
a877a2b6
AM
5091 bfd_vma addend = 0;
5092 struct plt_entry *ent;
5093
0e1862bb 5094 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
a877a2b6
AM
5095 addend = rel->r_addend;
5096 ent = find_plt_ent (ifunc, got2, addend);
e054468f
AM
5097 if (ent->plt.refcount > 0)
5098 ent->plt.refcount -= 1;
5099 continue;
5100 }
5101 }
5102
25dbc73a 5103 switch (r_type)
ee05f2fe 5104 {
25dbc73a
AM
5105 case R_PPC_GOT_TLSLD16:
5106 case R_PPC_GOT_TLSLD16_LO:
5107 case R_PPC_GOT_TLSLD16_HI:
5108 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
5109 case R_PPC_GOT_TLSGD16:
5110 case R_PPC_GOT_TLSGD16_LO:
5111 case R_PPC_GOT_TLSGD16_HI:
5112 case R_PPC_GOT_TLSGD16_HA:
5113 case R_PPC_GOT_TPREL16:
5114 case R_PPC_GOT_TPREL16_LO:
5115 case R_PPC_GOT_TPREL16_HI:
5116 case R_PPC_GOT_TPREL16_HA:
5117 case R_PPC_GOT_DTPREL16:
5118 case R_PPC_GOT_DTPREL16_LO:
5119 case R_PPC_GOT_DTPREL16_HI:
5120 case R_PPC_GOT_DTPREL16_HA:
5121 case R_PPC_GOT16:
5122 case R_PPC_GOT16_LO:
5123 case R_PPC_GOT16_HI:
5124 case R_PPC_GOT16_HA:
5125 if (h != NULL)
ee05f2fe 5126 {
25dbc73a
AM
5127 if (h->got.refcount > 0)
5128 h->got.refcount--;
0e1862bb 5129 if (!bfd_link_pic (info))
91e21fb7
AM
5130 {
5131 struct plt_entry *ent;
5132
5133 ent = find_plt_ent (&h->plt.plist, NULL, 0);
32af9f6e 5134 if (ent != NULL && ent->plt.refcount > 0)
91e21fb7
AM
5135 ent->plt.refcount -= 1;
5136 }
ee05f2fe 5137 }
25dbc73a
AM
5138 else if (local_got_refcounts != NULL)
5139 {
5140 if (local_got_refcounts[r_symndx] > 0)
5141 local_got_refcounts[r_symndx]--;
5142 }
5143 break;
ee05f2fe 5144
25dbc73a
AM
5145 case R_PPC_REL24:
5146 case R_PPC_REL14:
5147 case R_PPC_REL14_BRTAKEN:
5148 case R_PPC_REL14_BRNTAKEN:
5149 case R_PPC_REL32:
3b36f7e6 5150 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM
5151 break;
5152 /* Fall thru */
ee05f2fe 5153
25dbc73a
AM
5154 case R_PPC_ADDR32:
5155 case R_PPC_ADDR24:
5156 case R_PPC_ADDR16:
5157 case R_PPC_ADDR16_LO:
5158 case R_PPC_ADDR16_HI:
5159 case R_PPC_ADDR16_HA:
5160 case R_PPC_ADDR14:
5161 case R_PPC_ADDR14_BRTAKEN:
5162 case R_PPC_ADDR14_BRNTAKEN:
5163 case R_PPC_UADDR32:
5164 case R_PPC_UADDR16:
0e1862bb 5165 if (bfd_link_pic (info))
87538722
AM
5166 break;
5167
25dbc73a
AM
5168 case R_PPC_PLT32:
5169 case R_PPC_PLTREL24:
87538722 5170 case R_PPC_PLTREL32:
25dbc73a
AM
5171 case R_PPC_PLT16_LO:
5172 case R_PPC_PLT16_HI:
5173 case R_PPC_PLT16_HA:
5174 if (h != NULL)
5175 {
a877a2b6
AM
5176 bfd_vma addend = 0;
5177 struct plt_entry *ent;
5178
0e1862bb 5179 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
a877a2b6
AM
5180 addend = rel->r_addend;
5181 ent = find_plt_ent (&h->plt.plist, got2, addend);
32af9f6e 5182 if (ent != NULL && ent->plt.refcount > 0)
a6aa5195 5183 ent->plt.refcount -= 1;
25dbc73a
AM
5184 }
5185 break;
ee05f2fe 5186
25dbc73a
AM
5187 default:
5188 break;
5189 }
7fce784e 5190 }
7fce784e
AS
5191 return TRUE;
5192}
25dbc73a 5193\f
3a71aa26
AM
5194/* Set plt output section type, htab->tls_get_addr, and call the
5195 generic ELF tls_setup function. */
7fce784e 5196
25dbc73a 5197asection *
5446cbdf 5198ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 5199{
25dbc73a 5200 struct ppc_elf_link_hash_table *htab;
7fce784e 5201
25dbc73a 5202 htab = ppc_elf_hash_table (info);
a7f2871e
AM
5203 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5204 FALSE, FALSE, TRUE);
f01f1741
AM
5205 if (htab->plt_type != PLT_NEW)
5206 htab->params->no_tls_get_addr_opt = TRUE;
5207
5446cbdf 5208 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM
5209 {
5210 struct elf_link_hash_entry *opt, *tga;
5211 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5212 FALSE, FALSE, TRUE);
5213 if (opt != NULL
5214 && (opt->root.type == bfd_link_hash_defined
5215 || opt->root.type == bfd_link_hash_defweak))
5216 {
5217 /* If glibc supports an optimized __tls_get_addr call stub,
5218 signalled by the presence of __tls_get_addr_opt, and we'll
5219 be calling __tls_get_addr via a plt call stub, then
5220 make __tls_get_addr point to __tls_get_addr_opt. */
5221 tga = htab->tls_get_addr;
5222 if (htab->elf.dynamic_sections_created
5223 && tga != NULL
5224 && (tga->type == STT_FUNC
5225 || tga->needs_plt)
5226 && !(SYMBOL_CALLS_LOCAL (info, tga)
5227 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5228 && tga->root.type == bfd_link_hash_undefweak)))
5229 {
5230 struct plt_entry *ent;
32af9f6e
AM
5231 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5232 if (ent->plt.refcount > 0)
5233 break;
5234 if (ent != NULL)
a7f2871e
AM
5235 {
5236 tga->root.type = bfd_link_hash_indirect;
5237 tga->root.u.i.link = &opt->root;
5238 ppc_elf_copy_indirect_symbol (info, opt, tga);
3bd43ebc 5239 opt->forced_local = 0;
a7f2871e
AM
5240 if (opt->dynindx != -1)
5241 {
5242 /* Use __tls_get_addr_opt in dynamic relocations. */
5243 opt->dynindx = -1;
5244 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5245 opt->dynstr_index);
5246 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5247 return FALSE;
5248 }
5249 htab->tls_get_addr = opt;
5250 }
5251 }
5252 }
5253 else
5446cbdf 5254 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 5255 }
4a3dc543 5256 if (htab->plt_type == PLT_NEW
d7128ce4
AM
5257 && htab->plt != NULL
5258 && htab->plt->output_section != NULL)
5259 {
5260 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5261 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5262 }
5263
25dbc73a 5264 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
5265}
5266
3a71aa26
AM
5267/* Return TRUE iff REL is a branch reloc with a global symbol matching
5268 HASH. */
5269
5270static bfd_boolean
5271branch_reloc_hash_match (const bfd *ibfd,
5272 const Elf_Internal_Rela *rel,
5273 const struct elf_link_hash_entry *hash)
5274{
5275 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5276 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5277 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5278
e054468f 5279 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
3a71aa26
AM
5280 {
5281 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5282 struct elf_link_hash_entry *h;
5283
5284 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5285 while (h->root.type == bfd_link_hash_indirect
5286 || h->root.type == bfd_link_hash_warning)
5287 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5288 if (h == hash)
5289 return TRUE;
5290 }
5291 return FALSE;
5292}
5293
25dbc73a
AM
5294/* Run through all the TLS relocs looking for optimization
5295 opportunities. */
252b5132 5296
25dbc73a
AM
5297bfd_boolean
5298ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5299 struct bfd_link_info *info)
252b5132 5300{
7fce784e 5301 bfd *ibfd;
25dbc73a
AM
5302 asection *sec;
5303 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 5304 int pass;
252b5132 5305
3cbc1e5e 5306 if (!bfd_link_executable (info))
25dbc73a 5307 return TRUE;
252b5132 5308
7619e7c7 5309 htab = ppc_elf_hash_table (info);
663a1470
AM
5310 if (htab == NULL)
5311 return FALSE;
5312
b7fcf6f6
AM
5313 /* Make two passes through the relocs. First time check that tls
5314 relocs involved in setting up a tls_get_addr call are indeed
663a1470
AM
5315 followed by such a call. If they are not, don't do any tls
5316 optimization. On the second pass twiddle tls_mask flags to
5317 notify relocate_section that optimization can be done, and
5318 adjust got and plt refcounts. */
b7fcf6f6 5319 for (pass = 0; pass < 2; ++pass)
c72f2fb2 5320 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
b7fcf6f6
AM
5321 {
5322 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 5323 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
32af9f6e 5324 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
7619e7c7 5325
b7fcf6f6
AM
5326 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5327 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5328 {
5329 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 5330 int expecting_tls_get_addr = 0;
252b5132 5331
b7fcf6f6
AM
5332 /* Read the relocations. */
5333 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5334 info->keep_memory);
5335 if (relstart == NULL)
5336 return FALSE;
7619e7c7 5337
b7fcf6f6
AM
5338 relend = relstart + sec->reloc_count;
5339 for (rel = relstart; rel < relend; rel++)
5340 {
5341 enum elf_ppc_reloc_type r_type;
5342 unsigned long r_symndx;
5343 struct elf_link_hash_entry *h = NULL;
5344 char *tls_mask;
5345 char tls_set, tls_clear;
5346 bfd_boolean is_local;
b7fcf6f6
AM
5347 bfd_signed_vma *got_count;
5348
5349 r_symndx = ELF32_R_SYM (rel->r_info);
5350 if (r_symndx >= symtab_hdr->sh_info)
5351 {
5352 struct elf_link_hash_entry **sym_hashes;
7fce784e 5353
b7fcf6f6
AM
5354 sym_hashes = elf_sym_hashes (ibfd);
5355 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5356 while (h->root.type == bfd_link_hash_indirect
5357 || h->root.type == bfd_link_hash_warning)
5358 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5359 }
7619e7c7 5360
b7fcf6f6
AM
5361 is_local = FALSE;
5362 if (h == NULL
5363 || !h->def_dynamic)
5364 is_local = TRUE;
7619e7c7 5365
b7fcf6f6 5366 r_type = ELF32_R_TYPE (rel->r_info);
663a1470
AM
5367 /* If this section has old-style __tls_get_addr calls
5368 without marker relocs, then check that each
5369 __tls_get_addr call reloc is preceded by a reloc
5370 that conceivably belongs to the __tls_get_addr arg
5371 setup insn. If we don't find matching arg setup
5372 relocs, don't do any tls optimization. */
5373 if (pass == 0
5374 && sec->has_tls_get_addr_call
5375 && h != NULL
5376 && h == htab->tls_get_addr
5377 && !expecting_tls_get_addr
5378 && is_branch_reloc (r_type))
5379 {
25f53a85 5380 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
663a1470
AM
5381 "TLS optimization disabled\n",
5382 ibfd, sec, rel->r_offset);
5383 if (elf_section_data (sec)->relocs != relstart)
5384 free (relstart);
5385 return TRUE;
5386 }
5387
5388 expecting_tls_get_addr = 0;
b7fcf6f6
AM
5389 switch (r_type)
5390 {
5391 case R_PPC_GOT_TLSLD16:
5392 case R_PPC_GOT_TLSLD16_LO:
5393 expecting_tls_get_addr = 1;
5394 /* Fall thru */
5395
5396 case R_PPC_GOT_TLSLD16_HI:
5397 case R_PPC_GOT_TLSLD16_HA:
5398 /* These relocs should never be against a symbol
5399 defined in a shared lib. Leave them alone if
5400 that turns out to be the case. */
5401 if (!is_local)
5402 continue;
5403
5404 /* LD -> LE */
5405 tls_set = 0;
5406 tls_clear = TLS_LD;
5407 break;
5408
5409 case R_PPC_GOT_TLSGD16:
5410 case R_PPC_GOT_TLSGD16_LO:
5411 expecting_tls_get_addr = 1;
5412 /* Fall thru */
5413
5414 case R_PPC_GOT_TLSGD16_HI:
5415 case R_PPC_GOT_TLSGD16_HA:
5416 if (is_local)
5417 /* GD -> LE */
5418 tls_set = 0;
5419 else
5420 /* GD -> IE */
5421 tls_set = TLS_TLS | TLS_TPRELGD;
5422 tls_clear = TLS_GD;
5423 break;
5424
5425 case R_PPC_GOT_TPREL16:
5426 case R_PPC_GOT_TPREL16_LO:
5427 case R_PPC_GOT_TPREL16_HI:
5428 case R_PPC_GOT_TPREL16_HA:
5429 if (is_local)
5430 {
5431 /* IE -> LE */
5432 tls_set = 0;
5433 tls_clear = TLS_TPREL;
5434 break;
5435 }
5436 else
5437 continue;
5438
32af9f6e
AM
5439 case R_PPC_TLSGD:
5440 case R_PPC_TLSLD:
5441 expecting_tls_get_addr = 2;
5442 tls_set = 0;
5443 tls_clear = 0;
5444 break;
5445
b7fcf6f6 5446 default:
25dbc73a 5447 continue;
b7fcf6f6 5448 }
25dbc73a 5449
b7fcf6f6
AM
5450 if (pass == 0)
5451 {
727fc41e 5452 if (!expecting_tls_get_addr
32af9f6e
AM
5453 || (expecting_tls_get_addr == 1
5454 && !sec->has_tls_get_addr_call))
b7fcf6f6 5455 continue;
25dbc73a 5456
3a71aa26
AM
5457 if (rel + 1 < relend
5458 && branch_reloc_hash_match (ibfd, rel + 1,
5459 htab->tls_get_addr))
5460 continue;
25dbc73a 5461
b7fcf6f6
AM
5462 /* Uh oh, we didn't find the expected call. We
5463 could just mark this symbol to exclude it
5464 from tls optimization but it's safer to skip
663a1470 5465 the entire optimization. */
25f53a85 5466 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM
5467 "TLS optimization disabled\n"),
5468 ibfd, sec, rel->r_offset);
5469 if (elf_section_data (sec)->relocs != relstart)
5470 free (relstart);
5471 return TRUE;
b7fcf6f6 5472 }
25dbc73a 5473
32af9f6e
AM
5474 if (expecting_tls_get_addr)
5475 {
5476 struct plt_entry *ent;
5477 bfd_vma addend = 0;
5478
0e1862bb 5479 if (bfd_link_pic (info)
32af9f6e
AM
5480 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5481 addend = rel[1].r_addend;
5482 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5483 got2, addend);
5484 if (ent != NULL && ent->plt.refcount > 0)
5485 ent->plt.refcount -= 1;
5486
5487 if (expecting_tls_get_addr == 2)
5488 continue;
5489 }
5490
b7fcf6f6
AM
5491 if (h != NULL)
5492 {
5493 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5494 got_count = &h->got.refcount;
5495 }
5496 else
5497 {
b7fcf6f6 5498 bfd_signed_vma *lgot_refs;
e054468f 5499 struct plt_entry **local_plt;
b7fcf6f6 5500 char *lgot_masks;
25dbc73a 5501
b7fcf6f6
AM
5502 if (locsyms == NULL)
5503 {
5504 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5505 if (locsyms == NULL)
5506 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5507 symtab_hdr->sh_info,
5508 0, NULL, NULL, NULL);
5509 if (locsyms == NULL)
5510 {
5511 if (elf_section_data (sec)->relocs != relstart)
5512 free (relstart);
5513 return FALSE;
5514 }
5515 }
b7fcf6f6
AM
5516 lgot_refs = elf_local_got_refcounts (ibfd);
5517 if (lgot_refs == NULL)
5518 abort ();
e054468f
AM
5519 local_plt = (struct plt_entry **)
5520 (lgot_refs + symtab_hdr->sh_info);
5521 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
b7fcf6f6
AM
5522 tls_mask = &lgot_masks[r_symndx];
5523 got_count = &lgot_refs[r_symndx];
5524 }
25dbc73a 5525
b7fcf6f6
AM
5526 if (tls_set == 0)
5527 {
5528 /* We managed to get rid of a got entry. */
5529 if (*got_count > 0)
5530 *got_count -= 1;
5531 }
25dbc73a 5532
b7fcf6f6
AM
5533 *tls_mask |= tls_set;
5534 *tls_mask &= ~tls_clear;
5535 }
25dbc73a 5536
b7fcf6f6
AM
5537 if (elf_section_data (sec)->relocs != relstart)
5538 free (relstart);
5539 }
5540
5541 if (locsyms != NULL
5542 && (symtab_hdr->contents != (unsigned char *) locsyms))
5543 {
5544 if (!info->keep_memory)
5545 free (locsyms);
5546 else
5547 symtab_hdr->contents = (unsigned char *) locsyms;
5548 }
5549 }
25dbc73a
AM
5550 return TRUE;
5551}
5552\f
625af618
AM
5553/* Return true if we have dynamic relocs that apply to read-only sections. */
5554
5555static bfd_boolean
5556readonly_dynrelocs (struct elf_link_hash_entry *h)
5557{
6061a67d 5558 struct elf_dyn_relocs *p;
625af618
AM
5559
5560 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5561 {
5562 asection *s = p->sec->output_section;
5563
5564 if (s != NULL
5565 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5566 == (SEC_READONLY | SEC_ALLOC)))
5567 return TRUE;
5568 }
5569 return FALSE;
5570}
5571
25dbc73a
AM
5572/* Adjust a symbol defined by a dynamic object and referenced by a
5573 regular object. The current definition is in some section of the
5574 dynamic object, but we're not including those sections. We have to
5575 change the definition to something the rest of the link can
5576 understand. */
7fce784e 5577
25dbc73a
AM
5578static bfd_boolean
5579ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5580 struct elf_link_hash_entry *h)
5581{
5582 struct ppc_elf_link_hash_table *htab;
5583 asection *s;
7fce784e 5584
25dbc73a
AM
5585#ifdef DEBUG
5586 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5587 h->root.root.string);
5588#endif
252b5132 5589
25dbc73a
AM
5590 /* Make sure we know what is going on here. */
5591 htab = ppc_elf_hash_table (info);
5592 BFD_ASSERT (htab->elf.dynobj != NULL
5593 && (h->needs_plt
91e21fb7 5594 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5595 || h->u.weakdef != NULL
5596 || (h->def_dynamic
5597 && h->ref_regular
5598 && !h->def_regular)));
252b5132 5599
25dbc73a
AM
5600 /* Deal with function syms. */
5601 if (h->type == STT_FUNC
e054468f 5602 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5603 || h->needs_plt)
5604 {
5605 /* Clear procedure linkage table information for any symbol that
5606 won't need a .plt entry. */
a6aa5195
AM
5607 struct plt_entry *ent;
5608 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5609 if (ent->plt.refcount > 0)
5610 break;
5611 if (ent == NULL
e054468f
AM
5612 || (h->type != STT_GNU_IFUNC
5613 && (SYMBOL_CALLS_LOCAL (info, h)
5614 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5615 && h->root.type == bfd_link_hash_undefweak))))
252b5132 5616 {
25dbc73a 5617 /* A PLT entry is not required/allowed when:
252b5132 5618
25dbc73a
AM
5619 1. We are not using ld.so; because then the PLT entry
5620 can't be set up, so we can't use one. In this case,
5621 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 5622
25dbc73a
AM
5623 2. GC has rendered the entry unused.
5624
5625 3. We know for certain that a call to this symbol
5626 will go to this object, or will remain undefined. */
a6aa5195 5627 h->plt.plist = NULL;
25dbc73a 5628 h->needs_plt = 0;
d1eca1e4 5629 h->pointer_equality_needed = 0;
25dbc73a 5630 }
625af618
AM
5631 else
5632 {
d1eca1e4
AM
5633 /* Taking a function's address in a read/write section
5634 doesn't require us to define the function symbol in the
1009ef28 5635 executable on a plt call stub. A dynamic reloc can
d1eca1e4
AM
5636 be used instead. */
5637 if (h->pointer_equality_needed
1009ef28
AM
5638 && h->type != STT_GNU_IFUNC
5639 && !htab->is_vxworks
5640 && !ppc_elf_hash_entry (h)->has_sda_refs
d1eca1e4
AM
5641 && !readonly_dynrelocs (h))
5642 {
5643 h->pointer_equality_needed = 0;
5644 h->non_got_ref = 0;
5645 }
5646
25f23106
AM
5647 /* After adjust_dynamic_symbol, non_got_ref set in the
5648 non-shared case means that we have allocated space in
5649 .dynbss for the symbol and thus dyn_relocs for this
5650 symbol should be discarded.
625af618
AM
5651 If we get here we know we are making a PLT entry for this
5652 symbol, and in an executable we'd normally resolve
5653 relocations against this symbol to the PLT entry. Allow
5654 dynamic relocs if the reference is weak, and the dynamic
5655 relocs will not cause text relocation. */
d1eca1e4
AM
5656 else if (!h->ref_regular_nonweak
5657 && h->non_got_ref
5658 && h->type != STT_GNU_IFUNC
5659 && !htab->is_vxworks
5660 && !ppc_elf_hash_entry (h)->has_sda_refs
5661 && !readonly_dynrelocs (h))
625af618
AM
5662 h->non_got_ref = 0;
5663 }
d3e454b9 5664 h->protected_def = 0;
25dbc73a 5665 return TRUE;
252b5132 5666 }
25dbc73a 5667 else
a6aa5195 5668 h->plt.plist = NULL;
252b5132 5669
25dbc73a
AM
5670 /* If this is a weak symbol, and there is a real definition, the
5671 processor independent code will have arranged for us to see the
5672 real definition first, and we can just use the same value. */
5673 if (h->u.weakdef != NULL)
252b5132 5674 {
25dbc73a
AM
5675 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5676 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5677 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5678 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5679 if (ELIMINATE_COPY_RELOCS)
5680 h->non_got_ref = h->u.weakdef->non_got_ref;
5681 return TRUE;
5682 }
dc810e39 5683
25dbc73a
AM
5684 /* This is a reference to a symbol defined by a dynamic object which
5685 is not a function. */
252b5132 5686
25dbc73a
AM
5687 /* If we are creating a shared library, we must presume that the
5688 only references to the symbol are via the global offset table.
5689 For such cases we need not do anything here; the relocations will
5690 be handled correctly by relocate_section. */
0e1862bb 5691 if (bfd_link_pic (info))
d3e454b9
AM
5692 {
5693 h->protected_def = 0;
5694 return TRUE;
5695 }
252b5132 5696
25dbc73a
AM
5697 /* If there are no references to this symbol that do not use the
5698 GOT, we don't need to generate a copy reloc. */
5699 if (!h->non_got_ref)
d3e454b9
AM
5700 {
5701 h->protected_def = 0;
5702 return TRUE;
5703 }
5704
5705 /* Protected variables do not work with .dynbss. The copy in
5706 .dynbss won't be used by the shared library with the protected
5707 definition for the variable. Editing to PIC, or text relocations
5708 are preferable to an incorrect program. */
5709 if (h->protected_def)
5710 {
5711 if (ELIMINATE_COPY_RELOCS
5712 && ppc_elf_hash_entry (h)->has_addr16_ha
5713 && ppc_elf_hash_entry (h)->has_addr16_lo
5714 && htab->params->pic_fixup == 0
5715 && info->disable_target_specific_optimizations <= 1)
5716 htab->params->pic_fixup = 1;
5717 h->non_got_ref = 0;
5718 return TRUE;
5719 }
25dbc73a 5720
a127494f
AM
5721 /* If -z nocopyreloc was given, we won't generate them either. */
5722 if (info->nocopyreloc)
5723 {
5724 h->non_got_ref = 0;
5725 return TRUE;
5726 }
5727
cfd2c773
NS
5728 /* If we didn't find any dynamic relocs in read-only sections, then
5729 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5730 We can't do this if there are any small data relocations. This
5731 doesn't work on VxWorks, where we can not have dynamic
5732 relocations (other than copy and jump slot relocations) in an
5733 executable. */
4dc4a9a5 5734 if (ELIMINATE_COPY_RELOCS
cfd2c773 5735 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
5736 && !htab->is_vxworks
5737 && !h->def_regular
5738 && !readonly_dynrelocs (h))
25dbc73a 5739 {
625af618
AM
5740 h->non_got_ref = 0;
5741 return TRUE;
252b5132
RH
5742 }
5743
25dbc73a
AM
5744 /* We must allocate the symbol in our .dynbss section, which will
5745 become part of the .bss section of the executable. There will be
5746 an entry for this symbol in the .dynsym section. The dynamic
5747 object will contain position independent code, so all references
5748 from the dynamic object to this symbol will go through the global
5749 offset table. The dynamic linker will use the .dynsym entry to
5750 determine the address it must put in the global offset table, so
5751 both the dynamic object and the regular object will refer to the
5752 same memory location for the variable.
5753
4dc4a9a5
DJ
5754 Of course, if the symbol is referenced using SDAREL relocs, we
5755 must instead allocate it in .sbss. */
25dbc73a 5756
4dc4a9a5 5757 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
5758 s = htab->dynsbss;
5759 else
5760 s = htab->dynbss;
5761 BFD_ASSERT (s != NULL);
5762
5763 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5764 copy the initial value out of the dynamic object and into the
5765 runtime process image. We need to remember the offset into the
5766 .rela.bss section we are going to use. */
1d7e9d18 5767 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
25dbc73a
AM
5768 {
5769 asection *srel;
5770
4dc4a9a5 5771 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
5772 srel = htab->relsbss;
5773 else
5774 srel = htab->relbss;
5775 BFD_ASSERT (srel != NULL);
5776 srel->size += sizeof (Elf32_External_Rela);
5777 h->needs_copy = 1;
5778 }
7619e7c7 5779
6cabe1ea 5780 return _bfd_elf_adjust_dynamic_copy (info, h, s);
25dbc73a
AM
5781}
5782\f
ac39eb42
AM
5783/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5784 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5785 specifying the addend on the plt relocation. For -fpic code, the sym
5786 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5787 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
5788
5789static bfd_boolean
5790add_stub_sym (struct plt_entry *ent,
5791 struct elf_link_hash_entry *h,
ac39eb42 5792 struct bfd_link_info *info)
0ba07910
AM
5793{
5794 struct elf_link_hash_entry *sh;
5795 size_t len1, len2, len3;
5796 char *name;
ac39eb42
AM
5797 const char *stub;
5798 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5799
0e1862bb 5800 if (bfd_link_pic (info))
ac39eb42
AM
5801 stub = ".plt_pic32.";
5802 else
5803 stub = ".plt_call32.";
0ba07910
AM
5804
5805 len1 = strlen (h->root.root.string);
ac39eb42 5806 len2 = strlen (stub);
0ba07910
AM
5807 len3 = 0;
5808 if (ent->sec)
5809 len3 = strlen (ent->sec->name);
ac39eb42 5810 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
5811 if (name == NULL)
5812 return FALSE;
5813 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5814 if (ent->sec)
5815 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
5816 memcpy (name + 8 + len3, stub, len2);
5817 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
5818 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5819 if (sh == NULL)
5820 return FALSE;
5821 if (sh->root.type == bfd_link_hash_new)
5822 {
5823 sh->root.type = bfd_link_hash_defined;
5824 sh->root.u.def.section = htab->glink;
5825 sh->root.u.def.value = ent->glink_offset;
5826 sh->ref_regular = 1;
5827 sh->def_regular = 1;
5828 sh->ref_regular_nonweak = 1;
5829 sh->forced_local = 1;
5830 sh->non_elf = 0;
2ec55de3 5831 sh->root.linker_def = 1;
0ba07910
AM
5832 }
5833 return TRUE;
5834}
5835
3b36f7e6
AM
5836/* Allocate NEED contiguous space in .got, and return the offset.
5837 Handles allocation of the got header when crossing 32k. */
5838
5839static bfd_vma
5840allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5841{
5842 bfd_vma where;
4a3dc543 5843 unsigned int max_before_header;
3b36f7e6 5844
4a3dc543 5845 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
5846 {
5847 where = htab->got->size;
5848 htab->got->size += need;
5849 }
3b36f7e6
AM
5850 else
5851 {
4a3dc543
RS
5852 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5853 if (need <= htab->got_gap)
3b36f7e6 5854 {
4a3dc543
RS
5855 where = max_before_header - htab->got_gap;
5856 htab->got_gap -= need;
5857 }
5858 else
5859 {
5860 if (htab->got->size + need > max_before_header
5861 && htab->got->size <= max_before_header)
5862 {
5863 htab->got_gap = max_before_header - htab->got->size;
5864 htab->got->size = max_before_header + htab->got_header_size;
5865 }
5866 where = htab->got->size;
5867 htab->got->size += need;
3b36f7e6 5868 }
3b36f7e6
AM
5869 }
5870 return where;
5871}
5872
25dbc73a 5873/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 5874
b34976b6 5875static bfd_boolean
25dbc73a 5876allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 5877{
25dbc73a
AM
5878 struct bfd_link_info *info = inf;
5879 struct ppc_elf_link_hash_entry *eh;
7619e7c7 5880 struct ppc_elf_link_hash_table *htab;
6061a67d 5881 struct elf_dyn_relocs *p;
252b5132 5882
25dbc73a 5883 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5884 return TRUE;
252b5132 5885
7619e7c7 5886 htab = ppc_elf_hash_table (info);
e054468f
AM
5887 if (htab->elf.dynamic_sections_created
5888 || h->type == STT_GNU_IFUNC)
252b5132 5889 {
a6aa5195
AM
5890 struct plt_entry *ent;
5891 bfd_boolean doneone = FALSE;
28e99bb6 5892 bfd_vma plt_offset = 0, glink_offset = 0;
e054468f 5893 bfd_boolean dyn;
28e99bb6 5894
a6aa5195
AM
5895 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5896 if (ent->plt.refcount > 0)
5897 {
5898 /* Make sure this symbol is output as a dynamic symbol. */
5899 if (h->dynindx == -1
e054468f
AM
5900 && !h->forced_local
5901 && !h->def_regular
5902 && htab->elf.dynamic_sections_created)
a6aa5195
AM
5903 {
5904 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5905 return FALSE;
5906 }
252b5132 5907
e054468f 5908 dyn = htab->elf.dynamic_sections_created;
0e1862bb 5909 if (bfd_link_pic (info)
e054468f
AM
5910 || h->type == STT_GNU_IFUNC
5911 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
a6aa5195
AM
5912 {
5913 asection *s = htab->plt;
25f23106 5914 if (!dyn || h->dynindx == -1)
e054468f 5915 s = htab->iplt;
7619e7c7 5916
25f23106 5917 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
a6aa5195 5918 {
a6aa5195 5919 if (!doneone)
28e99bb6
AM
5920 {
5921 plt_offset = s->size;
5922 s->size += 4;
5923 }
5924 ent->plt.offset = plt_offset;
d7128ce4 5925
a6aa5195 5926 s = htab->glink;
0e1862bb 5927 if (!doneone || bfd_link_pic (info))
28e99bb6
AM
5928 {
5929 glink_offset = s->size;
5930 s->size += GLINK_ENTRY_SIZE;
a7f2871e 5931 if (h == htab->tls_get_addr
5446cbdf 5932 && !htab->params->no_tls_get_addr_opt)
a7f2871e 5933 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
28e99bb6
AM
5934 }
5935 if (!doneone
0e1862bb 5936 && !bfd_link_pic (info)
625af618 5937 && h->def_dynamic
a6aa5195
AM
5938 && !h->def_regular)
5939 {
5940 h->root.u.def.section = s;
28e99bb6 5941 h->root.u.def.value = glink_offset;
a6aa5195 5942 }
28e99bb6 5943 ent->glink_offset = glink_offset;
0ba07910 5944
5446cbdf 5945 if (htab->params->emit_stub_syms
ac39eb42 5946 && !add_stub_sym (ent, h, info))
0ba07910 5947 return FALSE;
a6aa5195
AM
5948 }
5949 else
5950 {
a6aa5195
AM
5951 if (!doneone)
5952 {
28e99bb6
AM
5953 /* If this is the first .plt entry, make room
5954 for the special first entry. */
5955 if (s->size == 0)
9d8504b1 5956 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
5957
5958 /* The PowerPC PLT is actually composed of two
5959 parts, the first part is 2 words (for a load
5960 and a jump), and then there is a remaining
5961 word available at the end. */
9d8504b1
PB
5962 plt_offset = (htab->plt_initial_entry_size
5963 + (htab->plt_slot_size
5964 * ((s->size
5965 - htab->plt_initial_entry_size)
5966 / htab->plt_entry_size)));
28e99bb6
AM
5967
5968 /* If this symbol is not defined in a regular
5969 file, and we are not generating a shared
5b914448 5970 library, then set the symbol to this location
de972ffa
AM
5971 in the .plt. This is to avoid text
5972 relocations, and is required to make
28e99bb6
AM
5973 function pointers compare as equal between
5974 the normal executable and the shared library. */
0e1862bb 5975 if (! bfd_link_pic (info)
625af618 5976 && h->def_dynamic
28e99bb6
AM
5977 && !h->def_regular)
5978 {
5979 h->root.u.def.section = s;
5980 h->root.u.def.value = plt_offset;
5981 }
5982
9d8504b1
PB
5983 /* Make room for this entry. */
5984 s->size += htab->plt_entry_size;
5985 /* After the 8192nd entry, room for two entries
5986 is allocated. */
4a3dc543 5987 if (htab->plt_type == PLT_OLD
9d8504b1
PB
5988 && (s->size - htab->plt_initial_entry_size)
5989 / htab->plt_entry_size
5990 > PLT_NUM_SINGLE_ENTRIES)
5991 s->size += htab->plt_entry_size;
a6aa5195 5992 }
28e99bb6 5993 ent->plt.offset = plt_offset;
a6aa5195 5994 }
25dbc73a 5995
a6aa5195
AM
5996 /* We also need to make an entry in the .rela.plt section. */
5997 if (!doneone)
5998 {
25f23106
AM
5999 if (!htab->elf.dynamic_sections_created
6000 || h->dynindx == -1)
e054468f
AM
6001 htab->reliplt->size += sizeof (Elf32_External_Rela);
6002 else
9d8504b1 6003 {
e054468f
AM
6004 htab->relplt->size += sizeof (Elf32_External_Rela);
6005
6006 if (htab->plt_type == PLT_VXWORKS)
9d8504b1 6007 {
e054468f 6008 /* Allocate space for the unloaded relocations. */
0e1862bb 6009 if (!bfd_link_pic (info)
e054468f 6010 && htab->elf.dynamic_sections_created)
9d8504b1 6011 {
e054468f
AM
6012 if (ent->plt.offset
6013 == (bfd_vma) htab->plt_initial_entry_size)
6014 {
6015 htab->srelplt2->size
6016 += (sizeof (Elf32_External_Rela)
6017 * VXWORKS_PLTRESOLVE_RELOCS);
6018 }
6019
9d8504b1 6020 htab->srelplt2->size
e054468f
AM
6021 += (sizeof (Elf32_External_Rela)
6022 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
9d8504b1
PB
6023 }
6024
e054468f
AM
6025 /* Every PLT entry has an associated GOT entry in
6026 .got.plt. */
6027 htab->sgotplt->size += 4;
9d8504b1 6028 }
9d8504b1 6029 }
a6aa5195
AM
6030 doneone = TRUE;
6031 }
6032 }
6033 else
6034 ent->plt.offset = (bfd_vma) -1;
a6aa5195 6035 }
2ce859a1
AM
6036 else
6037 ent->plt.offset = (bfd_vma) -1;
6038
6039 if (!doneone)
6040 {
6041 h->plt.plist = NULL;
6042 h->needs_plt = 0;
6043 }
25dbc73a
AM
6044 }
6045 else
6046 {
a6aa5195 6047 h->plt.plist = NULL;
25dbc73a
AM
6048 h->needs_plt = 0;
6049 }
6050
6051 eh = (struct ppc_elf_link_hash_entry *) h;
d3e454b9
AM
6052 if (eh->elf.got.refcount > 0
6053 || (ELIMINATE_COPY_RELOCS
6054 && !eh->elf.def_regular
6055 && eh->elf.protected_def
6056 && eh->has_addr16_ha
6057 && eh->has_addr16_lo
6058 && htab->params->pic_fixup > 0))
25dbc73a 6059 {
d6e14abc
AM
6060 bfd_boolean dyn;
6061 unsigned int need;
6062
25dbc73a
AM
6063 /* Make sure this symbol is output as a dynamic symbol. */
6064 if (eh->elf.dynindx == -1
b099ab9f 6065 && !eh->elf.forced_local
25f23106 6066 && eh->elf.type != STT_GNU_IFUNC
b099ab9f 6067 && htab->elf.dynamic_sections_created)
25dbc73a
AM
6068 {
6069 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 6070 return FALSE;
25dbc73a 6071 }
252b5132 6072
d6e14abc
AM
6073 need = 0;
6074 if ((eh->tls_mask & TLS_TLS) != 0)
25dbc73a 6075 {
d6e14abc 6076 if ((eh->tls_mask & TLS_LD) != 0)
252b5132 6077 {
d6e14abc
AM
6078 if (!eh->elf.def_dynamic)
6079 /* We'll just use htab->tlsld_got.offset. This should
6080 always be the case. It's a little odd if we have
6081 a local dynamic reloc against a non-local symbol. */
6082 htab->tlsld_got.refcount += 1;
6083 else
3b36f7e6 6084 need += 8;
252b5132 6085 }
d6e14abc
AM
6086 if ((eh->tls_mask & TLS_GD) != 0)
6087 need += 8;
6088 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6089 need += 4;
6090 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 6091 need += 4;
d6e14abc
AM
6092 }
6093 else
6094 need += 4;
6095 if (need == 0)
6096 eh->elf.got.offset = (bfd_vma) -1;
6097 else
6098 {
3b36f7e6 6099 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a 6100 dyn = htab->elf.dynamic_sections_created;
0e1862bb 6101 if ((bfd_link_pic (info)
25dbc73a
AM
6102 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6103 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6104 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 6105 {
91e21fb7 6106 asection *rsec = htab->relgot;
0bed072f
AM
6107
6108 if (eh->elf.type == STT_GNU_IFUNC)
6109 rsec = htab->reliplt;
3b36f7e6
AM
6110 /* All the entries we allocated need relocs.
6111 Except LD only needs one. */
d6e14abc
AM
6112 if ((eh->tls_mask & TLS_LD) != 0
6113 && eh->elf.def_dynamic)
3b36f7e6 6114 need -= 4;
25f23106 6115 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 6116 }
25dbc73a
AM
6117 }
6118 }
6119 else
6120 eh->elf.got.offset = (bfd_vma) -1;
252b5132 6121
b099ab9f 6122 if (eh->dyn_relocs == NULL
de972ffa 6123 || !htab->elf.dynamic_sections_created)
25dbc73a 6124 return TRUE;
252b5132 6125
25dbc73a
AM
6126 /* In the shared -Bsymbolic case, discard space allocated for
6127 dynamic pc-relative relocs against symbols which turn out to be
6128 defined in regular objects. For the normal shared case, discard
6129 space for relocs that have become local due to symbol visibility
6130 changes. */
6131
0e1862bb 6132 if (bfd_link_pic (info))
25dbc73a
AM
6133 {
6134 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 6135 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
6136 generated via assembly. We want calls to protected symbols to
6137 resolve directly to the function rather than going via the plt.
6138 If people want function pointer comparisons to work as expected
6139 then they should avoid writing weird assembly. */
6140 if (SYMBOL_CALLS_LOCAL (info, h))
6141 {
6061a67d 6142 struct elf_dyn_relocs **pp;
25dbc73a
AM
6143
6144 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 6145 {
25dbc73a
AM
6146 p->count -= p->pc_count;
6147 p->pc_count = 0;
6148 if (p->count == 0)
6149 *pp = p->next;
6150 else
6151 pp = &p->next;
252b5132 6152 }
25dbc73a 6153 }
252b5132 6154
3348747a
NS
6155 if (htab->is_vxworks)
6156 {
6061a67d 6157 struct elf_dyn_relocs **pp;
3348747a
NS
6158
6159 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6160 {
6161 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6162 *pp = p->next;
6163 else
6164 pp = &p->next;
6165 }
6166 }
6167
89200bf8
AM
6168 /* Discard relocs on undefined symbols that must be local. */
6169 if (eh->dyn_relocs != NULL
6170 && h->root.type == bfd_link_hash_undefined
6171 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6172 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6173 eh->dyn_relocs = NULL;
6174
25dbc73a
AM
6175 /* Also discard relocs on undefined weak syms with non-default
6176 visibility. */
cab87ef9
AM
6177 if (eh->dyn_relocs != NULL
6178 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 6179 {
dfbb6ac9
AM
6180 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6181 eh->dyn_relocs = NULL;
6182
6183 /* Make sure undefined weak symbols are output as a dynamic
6184 symbol in PIEs. */
6185 else if (h->dynindx == -1
e054468f
AM
6186 && !h->forced_local
6187 && !h->def_regular)
dfbb6ac9
AM
6188 {
6189 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6190 return FALSE;
6191 }
25dbc73a
AM
6192 }
6193 }
6194 else if (ELIMINATE_COPY_RELOCS)
6195 {
6196 /* For the non-shared case, discard space for relocs against
6197 symbols which turn out to need copy relocs or are not
6198 dynamic. */
7619e7c7 6199
25dbc73a 6200 if (!h->non_got_ref
d3e454b9
AM
6201 && !h->def_regular
6202 && !(h->protected_def
6203 && eh->has_addr16_ha
6204 && eh->has_addr16_lo
6205 && htab->params->pic_fixup > 0))
25dbc73a
AM
6206 {
6207 /* Make sure this symbol is output as a dynamic symbol.
6208 Undefined weak syms won't yet be marked as dynamic. */
6209 if (h->dynindx == -1
25f23106 6210 && !h->forced_local)
25dbc73a
AM
6211 {
6212 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6213 return FALSE;
6214 }
7619e7c7 6215
25dbc73a
AM
6216 /* If that succeeded, we know we'll be keeping all the
6217 relocs. */
6218 if (h->dynindx != -1)
6219 goto keep;
6220 }
252b5132 6221
25dbc73a 6222 eh->dyn_relocs = NULL;
252b5132 6223
25dbc73a
AM
6224 keep: ;
6225 }
252b5132 6226
25dbc73a
AM
6227 /* Finally, allocate space. */
6228 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6229 {
6230 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6231 if (eh->elf.type == STT_GNU_IFUNC)
25f23106 6232 sreloc = htab->reliplt;
25dbc73a
AM
6233 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6234 }
252b5132 6235
25dbc73a
AM
6236 return TRUE;
6237}
7619e7c7 6238
625af618
AM
6239/* Set DF_TEXTREL if we find any dynamic relocs that apply to
6240 read-only sections. */
7619e7c7 6241
25dbc73a 6242static bfd_boolean
625af618 6243maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 6244{
25dbc73a
AM
6245 if (h->root.type == bfd_link_hash_indirect)
6246 return TRUE;
252b5132 6247
625af618 6248 if (readonly_dynrelocs (h))
25dbc73a 6249 {
625af618 6250 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 6251
625af618
AM
6252 /* Not an error, just cut short the traversal. */
6253 return FALSE;
25dbc73a
AM
6254 }
6255 return TRUE;
6256}
6257
6177242a
AM
6258static const unsigned char glink_eh_frame_cie[] =
6259{
6260 0, 0, 0, 16, /* length. */
6261 0, 0, 0, 0, /* id. */
6262 1, /* CIE version. */
6263 'z', 'R', 0, /* Augmentation string. */
6264 4, /* Code alignment. */
6265 0x7c, /* Data alignment. */
6266 65, /* RA reg. */
6267 1, /* Augmentation size. */
6268 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6269 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6270};
6271
25dbc73a
AM
6272/* Set the sizes of the dynamic sections. */
6273
6274static bfd_boolean
93d1b056 6275ppc_elf_size_dynamic_sections (bfd *output_bfd,
25dbc73a
AM
6276 struct bfd_link_info *info)
6277{
6278 struct ppc_elf_link_hash_table *htab;
6279 asection *s;
6280 bfd_boolean relocs;
6281 bfd *ibfd;
7fce784e 6282
252b5132 6283#ifdef DEBUG
25dbc73a 6284 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 6285#endif
252b5132 6286
25dbc73a
AM
6287 htab = ppc_elf_hash_table (info);
6288 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 6289
25dbc73a
AM
6290 if (elf_hash_table (info)->dynamic_sections_created)
6291 {
6292 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 6293 if (bfd_link_executable (info) && !info->nointerp)
25dbc73a 6294 {
3d4d4302 6295 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
25dbc73a
AM
6296 BFD_ASSERT (s != NULL);
6297 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6298 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6299 }
6300 }
252b5132 6301
4a3dc543 6302 if (htab->plt_type == PLT_OLD)
d7128ce4 6303 htab->got_header_size = 16;
4a3dc543 6304 else if (htab->plt_type == PLT_NEW)
d7128ce4 6305 htab->got_header_size = 12;
252b5132 6306
25dbc73a
AM
6307 /* Set up .got offsets for local syms, and space for local dynamic
6308 relocs. */
c72f2fb2 6309 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
25dbc73a
AM
6310 {
6311 bfd_signed_vma *local_got;
6312 bfd_signed_vma *end_local_got;
e054468f
AM
6313 struct plt_entry **local_plt;
6314 struct plt_entry **end_local_plt;
25dbc73a
AM
6315 char *lgot_masks;
6316 bfd_size_type locsymcount;
6317 Elf_Internal_Shdr *symtab_hdr;
7fce784e 6318
0c8d6e5c 6319 if (!is_ppc_elf (ibfd))
25dbc73a 6320 continue;
7fce784e 6321
25dbc73a
AM
6322 for (s = ibfd->sections; s != NULL; s = s->next)
6323 {
f95f8542 6324 struct ppc_dyn_relocs *p;
252b5132 6325
f95f8542 6326 for (p = ((struct ppc_dyn_relocs *)
25dbc73a
AM
6327 elf_section_data (s)->local_dynrel);
6328 p != NULL;
6329 p = p->next)
6330 {
6331 if (!bfd_is_abs_section (p->sec)
6332 && bfd_is_abs_section (p->sec->output_section))
6333 {
6334 /* Input section has been discarded, either because
6335 it is a copy of a linkonce section or due to
6336 linker script /DISCARD/, so we'll be discarding
6337 the relocs too. */
7fce784e 6338 }
3348747a
NS
6339 else if (htab->is_vxworks
6340 && strcmp (p->sec->output_section->name,
6341 ".tls_vars") == 0)
6342 {
6343 /* Relocations in vxworks .tls_vars sections are
6344 handled specially by the loader. */
6345 }
25dbc73a 6346 else if (p->count != 0)
7fce784e 6347 {
25f23106 6348 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6349 if (p->ifunc)
25f23106
AM
6350 sreloc = htab->reliplt;
6351 sreloc->size += p->count * sizeof (Elf32_External_Rela);
25dbc73a
AM
6352 if ((p->sec->output_section->flags
6353 & (SEC_READONLY | SEC_ALLOC))
6354 == (SEC_READONLY | SEC_ALLOC))
6355 info->flags |= DF_TEXTREL;
7fce784e 6356 }
252b5132 6357 }
252b5132 6358 }
252b5132 6359
25dbc73a
AM
6360 local_got = elf_local_got_refcounts (ibfd);
6361 if (!local_got)
6362 continue;
252b5132 6363
0ffa91dd 6364 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
6365 locsymcount = symtab_hdr->sh_info;
6366 end_local_got = local_got + locsymcount;
e054468f
AM
6367 local_plt = (struct plt_entry **) end_local_got;
6368 end_local_plt = local_plt + locsymcount;
6369 lgot_masks = (char *) end_local_plt;
91d6fa6a 6370
25dbc73a
AM
6371 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6372 if (*local_got > 0)
6373 {
d6e14abc
AM
6374 unsigned int need = 0;
6375 if ((*lgot_masks & TLS_TLS) != 0)
25dbc73a 6376 {
d6e14abc
AM
6377 if ((*lgot_masks & TLS_GD) != 0)
6378 need += 8;
6379 if ((*lgot_masks & TLS_LD) != 0)
6380 htab->tlsld_got.refcount += 1;
6381 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6382 need += 4;
6383 if ((*lgot_masks & TLS_DTPREL) != 0)
6384 need += 4;
25dbc73a 6385 }
d6e14abc
AM
6386 else
6387 need += 4;
6388 if (need == 0)
6389 *local_got = (bfd_vma) -1;
25dbc73a
AM
6390 else
6391 {
3b36f7e6 6392 *local_got = allocate_got (htab, need);
0e1862bb 6393 if (bfd_link_pic (info))
0bed072f
AM
6394 {
6395 asection *srel = htab->relgot;
6396 if ((*lgot_masks & PLT_IFUNC) != 0)
6397 srel = htab->reliplt;
6398 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6399 }
25dbc73a
AM
6400 }
6401 }
6402 else
6403 *local_got = (bfd_vma) -1;
e054468f
AM
6404
6405 if (htab->is_vxworks)
6406 continue;
6407
6408 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6409 for (; local_plt < end_local_plt; ++local_plt)
6410 {
6411 struct plt_entry *ent;
6412 bfd_boolean doneone = FALSE;
6413 bfd_vma plt_offset = 0, glink_offset = 0;
6414
6415 for (ent = *local_plt; ent != NULL; ent = ent->next)
6416 if (ent->plt.refcount > 0)
6417 {
91d6fa6a 6418 s = htab->iplt;
e054468f
AM
6419
6420 if (!doneone)
6421 {
6422 plt_offset = s->size;
6423 s->size += 4;
6424 }
6425 ent->plt.offset = plt_offset;
6426
6427 s = htab->glink;
0e1862bb 6428 if (!doneone || bfd_link_pic (info))
e054468f
AM
6429 {
6430 glink_offset = s->size;
6431 s->size += GLINK_ENTRY_SIZE;
6432 }
6433 ent->glink_offset = glink_offset;
6434
6435 if (!doneone)
6436 {
25f23106 6437 htab->reliplt->size += sizeof (Elf32_External_Rela);
e054468f
AM
6438 doneone = TRUE;
6439 }
6440 }
6441 else
6442 ent->plt.offset = (bfd_vma) -1;
6443 }
25dbc73a 6444 }
252b5132 6445
b7fcf6f6
AM
6446 /* Allocate space for global sym dynamic relocs. */
6447 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6448
3b36f7e6
AM
6449 if (htab->tlsld_got.refcount > 0)
6450 {
6451 htab->tlsld_got.offset = allocate_got (htab, 8);
0e1862bb 6452 if (bfd_link_pic (info))
3b36f7e6
AM
6453 htab->relgot->size += sizeof (Elf32_External_Rela);
6454 }
6455 else
6456 htab->tlsld_got.offset = (bfd_vma) -1;
6457
4a3dc543 6458 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
6459 {
6460 unsigned int g_o_t = 32768;
6461
4d962050
AM
6462 /* If we haven't allocated the header, do so now. When we get here,
6463 for old plt/got the got size will be 0 to 32764 (not allocated),
6464 or 32780 to 65536 (header allocated). For new plt/got, the
6465 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM
6466 if (htab->got->size <= 32768)
6467 {
6468 g_o_t = htab->got->size;
4a3dc543 6469 if (htab->plt_type == PLT_OLD)
4d962050 6470 g_o_t += 4;
3b36f7e6
AM
6471 htab->got->size += htab->got_header_size;
6472 }
3b36f7e6
AM
6473
6474 htab->elf.hgot->root.u.def.value = g_o_t;
6475 }
0e1862bb 6476 if (bfd_link_pic (info))
bd6c6e2b
AM
6477 {
6478 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
93d1b056
AM
6479
6480 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6481 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
bd6c6e2b 6482 }
15bfcc77
AM
6483 if (info->emitrelocations)
6484 {
6485 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6486
6487 if (sda != NULL && sda->ref_regular)
6488 sda->root.u.def.section->flags |= SEC_KEEP;
6489 sda = htab->sdata[1].sym;
6490 if (sda != NULL && sda->ref_regular)
6491 sda->root.u.def.section->flags |= SEC_KEEP;
6492 }
3b36f7e6 6493
e054468f
AM
6494 if (htab->glink != NULL
6495 && htab->glink->size != 0
6496 && htab->elf.dynamic_sections_created)
d7128ce4
AM
6497 {
6498 htab->glink_pltresolve = htab->glink->size;
888a7fc3
AM
6499 /* Space for the branch table. ??? We don't need entries for
6500 non-dynamic symbols in this table. This case can arise with
6501 static ifuncs or forced local ifuncs. */
86b9da88
AM
6502 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6503 /* Pad out to align the start of PLTresolve. */
5446cbdf
AM
6504 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6505 ? 63 : 15);
d7128ce4 6506 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910 6507
5446cbdf 6508 if (htab->params->emit_stub_syms)
0ba07910
AM
6509 {
6510 struct elf_link_hash_entry *sh;
6511 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6512 TRUE, FALSE, FALSE);
6513 if (sh == NULL)
6514 return FALSE;
6515 if (sh->root.type == bfd_link_hash_new)
6516 {
6517 sh->root.type = bfd_link_hash_defined;
6518 sh->root.u.def.section = htab->glink;
6519 sh->root.u.def.value = htab->glink_pltresolve;
6520 sh->ref_regular = 1;
6521 sh->def_regular = 1;
6522 sh->ref_regular_nonweak = 1;
6523 sh->forced_local = 1;
6524 sh->non_elf = 0;
2ec55de3 6525 sh->root.linker_def = 1;
0ba07910
AM
6526 }
6527 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6528 TRUE, FALSE, FALSE);
6529 if (sh == NULL)
6530 return FALSE;
6531 if (sh->root.type == bfd_link_hash_new)
6532 {
6533 sh->root.type = bfd_link_hash_defined;
6534 sh->root.u.def.section = htab->glink;
6535 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6536 sh->ref_regular = 1;
6537 sh->def_regular = 1;
6538 sh->ref_regular_nonweak = 1;
6539 sh->forced_local = 1;
6540 sh->non_elf = 0;
2ec55de3 6541 sh->root.linker_def = 1;
0ba07910
AM
6542 }
6543 }
d7128ce4
AM
6544 }
6545
6177242a
AM
6546 if (htab->glink != NULL
6547 && htab->glink->size != 0
6548 && htab->glink_eh_frame != NULL
9a2a56cc
AM
6549 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6550 && _bfd_elf_eh_frame_present (info))
6177242a
AM
6551 {
6552 s = htab->glink_eh_frame;
6553 s->size = sizeof (glink_eh_frame_cie) + 20;
0e1862bb 6554 if (bfd_link_pic (info))
6177242a
AM
6555 {
6556 s->size += 4;
6557 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6558 s->size += 4;
6559 }
6560 }
6561
25dbc73a
AM
6562 /* We've now determined the sizes of the various dynamic sections.
6563 Allocate memory for them. */
6564 relocs = FALSE;
6565 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 6566 {
9d8504b1
PB
6567 bfd_boolean strip_section = TRUE;
6568
25dbc73a
AM
6569 if ((s->flags & SEC_LINKER_CREATED) == 0)
6570 continue;
252b5132 6571
25dbc73a 6572 if (s == htab->plt
e054468f 6573 || s == htab->got)
25dbc73a 6574 {
9d8504b1
PB
6575 /* We'd like to strip these sections if they aren't needed, but if
6576 we've exported dynamic symbols from them we must leave them.
6577 It's too late to tell BFD to get rid of the symbols. */
e054468f 6578 if (htab->elf.hplt != NULL)
9d8504b1 6579 strip_section = FALSE;
25dbc73a
AM
6580 /* Strip this section if we don't need it; see the
6581 comment below. */
6582 }
e054468f
AM
6583 else if (s == htab->iplt
6584 || s == htab->glink
6177242a 6585 || s == htab->glink_eh_frame
e054468f
AM
6586 || s == htab->sgotplt
6587 || s == htab->sbss
6588 || s == htab->dynbss
15bfcc77 6589 || s == htab->dynsbss)
25dbc73a 6590 {
c9a2f333 6591 /* Strip these too. */
25dbc73a 6592 }
15bfcc77
AM
6593 else if (s == htab->sdata[0].section
6594 || s == htab->sdata[1].section)
6595 {
6596 strip_section = (s->flags & SEC_KEEP) == 0;
6597 }
a0f49396
NC
6598 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6599 ".rela"))
25dbc73a 6600 {
c456f082 6601 if (s->size != 0)
25dbc73a
AM
6602 {
6603 /* Remember whether there are any relocation sections. */
6604 relocs = TRUE;
252b5132 6605
25dbc73a
AM
6606 /* We use the reloc_count field as a counter if we need
6607 to copy relocs into the output file. */
6608 s->reloc_count = 0;
252b5132
RH
6609 }
6610 }
25dbc73a
AM
6611 else
6612 {
6613 /* It's not one of our sections, so don't allocate space. */
6614 continue;
6615 }
252b5132 6616
9d8504b1 6617 if (s->size == 0 && strip_section)
25dbc73a 6618 {
c456f082
AM
6619 /* If we don't need this section, strip it from the
6620 output file. This is mostly to handle .rela.bss and
6621 .rela.plt. We must create both sections in
6622 create_dynamic_sections, because they must be created
6623 before the linker maps input sections to output
6624 sections. The linker does that before
6625 adjust_dynamic_symbol is called, and it is that
6626 function which decides whether anything needs to go
6627 into these sections. */
8423293d 6628 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
6629 continue;
6630 }
7fce784e 6631
d7128ce4 6632 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
6633 continue;
6634
25dbc73a
AM
6635 /* Allocate memory for the section contents. */
6636 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6637 if (s->contents == NULL)
6638 return FALSE;
6639 }
252b5132 6640
25dbc73a 6641 if (htab->elf.dynamic_sections_created)
7619e7c7 6642 {
25dbc73a
AM
6643 /* Add some entries to the .dynamic section. We fill in the
6644 values later, in ppc_elf_finish_dynamic_sections, but we
6645 must add the entries now so that we get the correct size for
6646 the .dynamic section. The DT_DEBUG entry is filled in by the
6647 dynamic linker and used by the debugger. */
6648#define add_dynamic_entry(TAG, VAL) \
6649 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 6650
0e1862bb 6651 if (bfd_link_executable (info))
7619e7c7 6652 {
25dbc73a
AM
6653 if (!add_dynamic_entry (DT_DEBUG, 0))
6654 return FALSE;
7619e7c7
AM
6655 }
6656
25dbc73a 6657 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 6658 {
25dbc73a
AM
6659 if (!add_dynamic_entry (DT_PLTGOT, 0)
6660 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6661 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6662 || !add_dynamic_entry (DT_JMPREL, 0))
6663 return FALSE;
6664 }
7619e7c7 6665
c7e17e05
AM
6666 if (htab->plt_type == PLT_NEW
6667 && htab->glink != NULL
6668 && htab->glink->size != 0)
d7128ce4 6669 {
1fe44d79 6670 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4 6671 return FALSE;
5446cbdf 6672 if (!htab->params->no_tls_get_addr_opt
a7f2871e
AM
6673 && htab->tls_get_addr != NULL
6674 && htab->tls_get_addr->plt.plist != NULL
e8910a83 6675 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
a7f2871e 6676 return FALSE;
d7128ce4
AM
6677 }
6678
25dbc73a
AM
6679 if (relocs)
6680 {
6681 if (!add_dynamic_entry (DT_RELA, 0)
6682 || !add_dynamic_entry (DT_RELASZ, 0)
6683 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6684 return FALSE;
6685 }
7619e7c7 6686
25dbc73a
AM
6687 /* If any dynamic relocs apply to a read-only section, then we
6688 need a DT_TEXTREL entry. */
6689 if ((info->flags & DF_TEXTREL) == 0)
625af618 6690 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 6691 info);
7619e7c7 6692
25dbc73a
AM
6693 if ((info->flags & DF_TEXTREL) != 0)
6694 {
6695 if (!add_dynamic_entry (DT_TEXTREL, 0))
6696 return FALSE;
7619e7c7 6697 }
7a2b07ff
NS
6698 if (htab->is_vxworks
6699 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6700 return FALSE;
6701 }
25dbc73a
AM
6702#undef add_dynamic_entry
6703
7e01508c
AM
6704 if (htab->glink_eh_frame != NULL
6705 && htab->glink_eh_frame->contents != NULL)
6706 {
6707 unsigned char *p = htab->glink_eh_frame->contents;
6708 bfd_vma val;
6709
6710 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6711 /* CIE length (rewrite in case little-endian). */
6712 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6713 p += sizeof (glink_eh_frame_cie);
6714 /* FDE length. */
6715 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6716 bfd_put_32 (htab->elf.dynobj, val, p);
6717 p += 4;
6718 /* CIE pointer. */
6719 val = p - htab->glink_eh_frame->contents;
6720 bfd_put_32 (htab->elf.dynobj, val, p);
6721 p += 4;
6722 /* Offset to .glink. Set later. */
6723 p += 4;
6724 /* .glink size. */
6725 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6726 p += 4;
6727 /* Augmentation. */
6728 p += 1;
6729
0e1862bb 6730 if (bfd_link_pic (info)
7e01508c
AM
6731 && htab->elf.dynamic_sections_created)
6732 {
6733 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6734 if (adv < 64)
6735 *p++ = DW_CFA_advance_loc + adv;
6736 else if (adv < 256)
6737 {
6738 *p++ = DW_CFA_advance_loc1;
6739 *p++ = adv;
6740 }
6741 else if (adv < 65536)
6742 {
6743 *p++ = DW_CFA_advance_loc2;
6744 bfd_put_16 (htab->elf.dynobj, adv, p);
6745 p += 2;
6746 }
6747 else
6748 {
6749 *p++ = DW_CFA_advance_loc4;
6750 bfd_put_32 (htab->elf.dynobj, adv, p);
6751 p += 4;
6752 }
6753 *p++ = DW_CFA_register;
6754 *p++ = 65;
6755 p++;
6756 *p++ = DW_CFA_advance_loc + 4;
6757 *p++ = DW_CFA_restore_extended;
6758 *p++ = 65;
6759 }
6760 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6761 == htab->glink_eh_frame->size);
6762 }
6763
7619e7c7
AM
6764 return TRUE;
6765}
0eb4a168 6766
93d1b056
AM
6767/* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6768 if it looks like nothing is using them. */
6769
6770static void
6771maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6772{
6773 struct elf_link_hash_entry *sda = lsect->sym;
6774
6775 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6776 {
6777 asection *s;
6778
6779 s = bfd_get_section_by_name (output_bfd, lsect->name);
6780 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6781 {
6782 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6783 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6784 {
6785 sda->def_regular = 0;
6786 /* This is somewhat magic. See elf_link_output_extsym. */
6787 sda->ref_dynamic = 1;
6788 sda->forced_local = 0;
6789 }
6790 }
6791 }
6792}
6793
6794void
6795ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6796{
6797 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6798
6799 if (htab != NULL)
6800 {
6801 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6802 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6803 }
6804}
6805
6806
0eb4a168
AM
6807/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6808
6809static bfd_boolean
6810ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6811{
6812 if (h->plt.plist != NULL
6813 && !h->def_regular
6814 && (!h->pointer_equality_needed
6815 || !h->ref_regular_nonweak))
6816 return FALSE;
6817
6818 return _bfd_elf_hash_symbol (h);
6819}
25dbc73a
AM
6820\f
6821#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6822
01017ef8
NS
6823/* Relaxation trampolines. r12 is available for clobbering (r11, is
6824 used for some functions that are allowed to break the ABI). */
25dbc73a
AM
6825static const int shared_stub_entry[] =
6826 {
6827 0x7c0802a6, /* mflr 0 */
6828 0x429f0005, /* bcl 20, 31, .Lxxx */
01017ef8
NS
6829 0x7d8802a6, /* mflr 12 */
6830 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
53291d1f 6831 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
25dbc73a 6832 0x7c0803a6, /* mtlr 0 */
01017ef8 6833 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6834 0x4e800420, /* bctr */
6835 };
6836
6837static const int stub_entry[] =
6838 {
01017ef8
NS
6839 0x3d800000, /* lis 12,xxx@ha */
6840 0x398c0000, /* addi 12,12,xxx@l */
6841 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6842 0x4e800420, /* bctr */
6843 };
6844
5446cbdf
AM
6845struct ppc_elf_relax_info
6846{
6847 unsigned int workaround_size;
d3e454b9 6848 unsigned int picfixup_size;
5446cbdf
AM
6849};
6850
6851/* This function implements long branch trampolines, and the ppc476
6852 icache bug workaround. Any section needing trampolines or patch
6853 space for the workaround has its size extended so that we can
53291d1f 6854 add trampolines at the end of the section. */
5446cbdf 6855
25dbc73a
AM
6856static bfd_boolean
6857ppc_elf_relax_section (bfd *abfd,
6858 asection *isec,
6859 struct bfd_link_info *link_info,
6860 bfd_boolean *again)
6861{
d3e454b9 6862 struct one_branch_fixup
25dbc73a 6863 {
d3e454b9 6864 struct one_branch_fixup *next;
25dbc73a 6865 asection *tsec;
01017ef8
NS
6866 /* Final link, can use the symbol offset. For a
6867 relocatable link we use the symbol's index. */
25dbc73a
AM
6868 bfd_vma toff;
6869 bfd_vma trampoff;
6870 };
7619e7c7 6871
25dbc73a
AM
6872 Elf_Internal_Shdr *symtab_hdr;
6873 bfd_byte *contents = NULL;
6874 Elf_Internal_Sym *isymbuf = NULL;
6875 Elf_Internal_Rela *internal_relocs = NULL;
5446cbdf 6876 Elf_Internal_Rela *irel, *irelend = NULL;
d3e454b9 6877 struct one_branch_fixup *branch_fixups = NULL;
5446cbdf 6878 struct ppc_elf_relax_info *relax_info = NULL;
9bc4e62b 6879 unsigned changes = 0;
5446cbdf 6880 bfd_boolean workaround_change;
d7128ce4 6881 struct ppc_elf_link_hash_table *htab;
d3e454b9 6882 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
a6aa5195 6883 asection *got2;
50248c89 6884 bfd_boolean maybe_pasted;
7619e7c7 6885
25dbc73a 6886 *again = FALSE;
7619e7c7 6887
5446cbdf 6888 /* No need to do anything with non-alloc or non-code sections. */
c87b5a93 6889 if ((isec->flags & SEC_ALLOC) == 0
a8ad78a7 6890 || (isec->flags & SEC_CODE) == 0
5446cbdf
AM
6891 || (isec->flags & SEC_LINKER_CREATED) != 0
6892 || isec->size < 4)
25dbc73a 6893 return TRUE;
7619e7c7 6894
c8a1f254
NS
6895 /* We cannot represent the required PIC relocs in the output, so don't
6896 do anything. The linker doesn't support mixing -shared and -r
6897 anyway. */
0e1862bb 6898 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
795bc6b3 6899 return TRUE;
5b914448 6900
5446cbdf
AM
6901 htab = ppc_elf_hash_table (link_info);
6902 if (htab == NULL)
6903 return TRUE;
6904
6905 isec->size = (isec->size + 3) & -4;
6906 if (isec->rawsize == 0)
6907 isec->rawsize = isec->size;
6908 trampbase = isec->size;
6909
53291d1f
AM
6910 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6911 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6912 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6913
d3e454b9
AM
6914 if (htab->params->ppc476_workaround
6915 || htab->params->pic_fixup > 0)
5446cbdf
AM
6916 {
6917 if (elf_section_data (isec)->sec_info == NULL)
6918 {
5446cbdf
AM
6919 elf_section_data (isec)->sec_info
6920 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6921 if (elf_section_data (isec)->sec_info == NULL)
6922 return FALSE;
6923 }
6924 relax_info = elf_section_data (isec)->sec_info;
6925 trampbase -= relax_info->workaround_size;
6926 }
6927
50248c89
AM
6928 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6929 || strcmp (isec->output_section->name, ".fini") == 0);
25dbc73a 6930 /* Space for a branch around any trampolines. */
5446cbdf
AM
6931 trampoff = trampbase;
6932 if (maybe_pasted && trampbase == isec->rawsize)
50248c89 6933 trampoff += 4;
7619e7c7 6934
0ffa91dd 6935 symtab_hdr = &elf_symtab_hdr (abfd);
d3e454b9
AM
6936 picfixup_size = 0;
6937 if (htab->params->branch_trampolines
6938 || htab->params->pic_fixup > 0)
7619e7c7 6939 {
5446cbdf
AM
6940 /* Get a copy of the native relocations. */
6941 if (isec->reloc_count != 0)
25dbc73a 6942 {
5446cbdf
AM
6943 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6944 link_info->keep_memory);
6945 if (internal_relocs == NULL)
6946 goto error_return;
25dbc73a 6947 }
7619e7c7 6948
5446cbdf
AM
6949 got2 = bfd_get_section_by_name (abfd, ".got2");
6950
6951 irelend = internal_relocs + isec->reloc_count;
6952 for (irel = internal_relocs; irel < irelend; irel++)
25dbc73a 6953 {
5446cbdf
AM
6954 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6955 bfd_vma toff, roff;
6956 asection *tsec;
d3e454b9 6957 struct one_branch_fixup *f;
5446cbdf 6958 size_t insn_offset = 0;
d3e454b9 6959 bfd_vma max_branch_offset = 0, val;
5446cbdf
AM
6960 bfd_byte *hit_addr;
6961 unsigned long t0;
6962 struct elf_link_hash_entry *h;
6963 struct plt_entry **plist;
6964 unsigned char sym_type;
6965
6966 switch (r_type)
6967 {
6968 case R_PPC_REL24:
6969 case R_PPC_LOCAL24PC:
6970 case R_PPC_PLTREL24:
6971 max_branch_offset = 1 << 25;
6972 break;
6973
6974 case R_PPC_REL14:
6975 case R_PPC_REL14_BRTAKEN:
6976 case R_PPC_REL14_BRNTAKEN:
6977 max_branch_offset = 1 << 15;
6978 break;
7fce784e 6979
d3e454b9
AM
6980 case R_PPC_ADDR16_HA:
6981 if (htab->params->pic_fixup > 0)
6982 break;
6983 continue;
6984
5446cbdf
AM
6985 default:
6986 continue;
6987 }
6988
6989 /* Get the value of the symbol referred to by the reloc. */
6990 h = NULL;
6991 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
25dbc73a 6992 {
5446cbdf
AM
6993 /* A local symbol. */
6994 Elf_Internal_Sym *isym;
6995
6996 /* Read this BFD's local symbols. */
25dbc73a 6997 if (isymbuf == NULL)
5446cbdf
AM
6998 {
6999 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7000 if (isymbuf == NULL)
7001 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7002 symtab_hdr->sh_info, 0,
7003 NULL, NULL, NULL);
7004 if (isymbuf == 0)
7005 goto error_return;
7006 }
7007 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7008 if (isym->st_shndx == SHN_UNDEF)
7009 tsec = bfd_und_section_ptr;
7010 else if (isym->st_shndx == SHN_ABS)
7011 tsec = bfd_abs_section_ptr;
7012 else if (isym->st_shndx == SHN_COMMON)
7013 tsec = bfd_com_section_ptr;
7014 else
7015 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7016
7017 toff = isym->st_value;
7018 sym_type = ELF_ST_TYPE (isym->st_info);
25dbc73a 7019 }
25dbc73a 7020 else
5446cbdf
AM
7021 {
7022 /* Global symbol handling. */
7023 unsigned long indx;
7fce784e 7024
5446cbdf
AM
7025 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7026 h = elf_sym_hashes (abfd)[indx];
7619e7c7 7027
5446cbdf
AM
7028 while (h->root.type == bfd_link_hash_indirect
7029 || h->root.type == bfd_link_hash_warning)
7030 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 7031
5446cbdf
AM
7032 if (h->root.type == bfd_link_hash_defined
7033 || h->root.type == bfd_link_hash_defweak)
7034 {
7035 tsec = h->root.u.def.section;
7036 toff = h->root.u.def.value;
7037 }
7038 else if (h->root.type == bfd_link_hash_undefined
7039 || h->root.type == bfd_link_hash_undefweak)
7040 {
7041 tsec = bfd_und_section_ptr;
0e1862bb 7042 toff = bfd_link_relocatable (link_info) ? indx : 0;
5446cbdf
AM
7043 }
7044 else
7045 continue;
7046
9f7552cf
AM
7047 /* If this branch is to __tls_get_addr then we may later
7048 optimise away the call. We won't be needing a long-
7049 branch stub in that case. */
0e1862bb 7050 if (bfd_link_executable (link_info)
9f7552cf
AM
7051 && h == htab->tls_get_addr
7052 && irel != internal_relocs)
7053 {
7054 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7055 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7056 unsigned int tls_mask = 0;
7057
7058 /* The previous reloc should be one of R_PPC_TLSGD or
7059 R_PPC_TLSLD, or for older object files, a reloc
7060 on the __tls_get_addr arg setup insn. Get tls
7061 mask bits from the symbol on that reloc. */
7062 if (t_symndx < symtab_hdr->sh_info)
7063 {
7064 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7065
7066 if (local_got_offsets != NULL)
7067 {
7068 struct plt_entry **local_plt = (struct plt_entry **)
7069 (local_got_offsets + symtab_hdr->sh_info);
7070 char *lgot_masks = (char *)
7071 (local_plt + symtab_hdr->sh_info);
7072 tls_mask = lgot_masks[t_symndx];
7073 }
7074 }
7075 else
7076 {
7077 struct elf_link_hash_entry *th
7078 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7079
7080 while (th->root.type == bfd_link_hash_indirect
7081 || th->root.type == bfd_link_hash_warning)
7082 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7083
7084 tls_mask
7085 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7086 }
7087
7088 /* The mask bits tell us if the call will be
7089 optimised away. */
7090 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7091 && (t_rtype == R_PPC_TLSGD
7092 || t_rtype == R_PPC_GOT_TLSGD16
7093 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7094 continue;
7095 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7096 && (t_rtype == R_PPC_TLSLD
7097 || t_rtype == R_PPC_GOT_TLSLD16
7098 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7099 continue;
7100 }
7101
5446cbdf
AM
7102 sym_type = h->type;
7103 }
7619e7c7 7104
d3e454b9
AM
7105 if (r_type == R_PPC_ADDR16_HA)
7106 {
7107 if (h != NULL
7108 && !h->def_regular
7109 && h->protected_def
7110 && ppc_elf_hash_entry (h)->has_addr16_ha
7111 && ppc_elf_hash_entry (h)->has_addr16_lo)
7112 picfixup_size += 12;
7113 continue;
7114 }
7115
5446cbdf
AM
7116 /* The condition here under which we call find_plt_ent must
7117 match that in relocate_section. If we call find_plt_ent here
7118 but not in relocate_section, or vice versa, then the branch
7119 destination used here may be incorrect. */
7120 plist = NULL;
7121 if (h != NULL)
25dbc73a 7122 {
5446cbdf
AM
7123 /* We know is_branch_reloc (r_type) is true. */
7124 if (h->type == STT_GNU_IFUNC
7125 || r_type == R_PPC_PLTREL24)
7126 plist = &h->plt.plist;
25dbc73a 7127 }
5446cbdf
AM
7128 else if (sym_type == STT_GNU_IFUNC
7129 && elf_local_got_offsets (abfd) != NULL)
c8a1f254 7130 {
5446cbdf
AM
7131 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7132 struct plt_entry **local_plt = (struct plt_entry **)
7133 (local_got_offsets + symtab_hdr->sh_info);
7134 plist = local_plt + ELF32_R_SYM (irel->r_info);
c8a1f254 7135 }
5446cbdf 7136 if (plist != NULL)
a9585d22 7137 {
5446cbdf
AM
7138 bfd_vma addend = 0;
7139 struct plt_entry *ent;
7140
0e1862bb 7141 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
5446cbdf
AM
7142 addend = irel->r_addend;
7143 ent = find_plt_ent (plist, got2, addend);
7144 if (ent != NULL)
a9585d22 7145 {
5446cbdf
AM
7146 if (htab->plt_type == PLT_NEW
7147 || h == NULL
7148 || !htab->elf.dynamic_sections_created
7149 || h->dynindx == -1)
7150 {
7151 tsec = htab->glink;
7152 toff = ent->glink_offset;
7153 }
7154 else
7155 {
7156 tsec = htab->plt;
7157 toff = ent->plt.offset;
7158 }
de972ffa
AM
7159 }
7160 }
de972ffa 7161
5446cbdf
AM
7162 /* If the branch and target are in the same section, you have
7163 no hope of adding stubs. We'll error out later should the
7164 branch overflow. */
7165 if (tsec == isec)
7166 continue;
25dbc73a 7167
5446cbdf
AM
7168 /* There probably isn't any reason to handle symbols in
7169 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7170 attribute for a code section, and we are only looking at
7171 branches. However, implement it correctly here as a
7172 reference for other target relax_section functions. */
7173 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7174 {
7175 /* At this stage in linking, no SEC_MERGE symbol has been
7176 adjusted, so all references to such symbols need to be
7177 passed through _bfd_merged_section_offset. (Later, in
7178 relocate_section, all SEC_MERGE symbols *except* for
7179 section symbols have been adjusted.)
7180
7181 gas may reduce relocations against symbols in SEC_MERGE
7182 sections to a relocation against the section symbol when
7183 the original addend was zero. When the reloc is against
7184 a section symbol we should include the addend in the
7185 offset passed to _bfd_merged_section_offset, since the
7186 location of interest is the original symbol. On the
7187 other hand, an access to "sym+addend" where "sym" is not
7188 a section symbol should not include the addend; Such an
7189 access is presumed to be an offset from "sym"; The
7190 location of interest is just "sym". */
7191 if (sym_type == STT_SECTION)
7192 toff += irel->r_addend;
7193
7194 toff
7195 = _bfd_merged_section_offset (abfd, &tsec,
7196 elf_section_data (tsec)->sec_info,
7197 toff);
7198
7199 if (sym_type != STT_SECTION)
7200 toff += irel->r_addend;
7201 }
7202 /* PLTREL24 addends are special. */
7203 else if (r_type != R_PPC_PLTREL24)
25dbc73a 7204 toff += irel->r_addend;
7619e7c7 7205
5446cbdf 7206 /* Attempted -shared link of non-pic code loses. */
0e1862bb 7207 if ((!bfd_link_relocatable (link_info)
5446cbdf
AM
7208 && tsec == bfd_und_section_ptr)
7209 || tsec->output_section == NULL
7210 || (tsec->owner != NULL
7211 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7212 continue;
7619e7c7 7213
5446cbdf 7214 roff = irel->r_offset;
7de713b9 7215
5446cbdf
AM
7216 /* If the branch is in range, no need to do anything. */
7217 if (tsec != bfd_und_section_ptr
0e1862bb 7218 && (!bfd_link_relocatable (link_info)
5446cbdf
AM
7219 /* A relocatable link may have sections moved during
7220 final link, so do not presume they remain in range. */
7221 || tsec->output_section == isec->output_section))
7222 {
7223 bfd_vma symaddr, reladdr;
7619e7c7 7224
5446cbdf
AM
7225 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7226 reladdr = isec->output_section->vma + isec->output_offset + roff;
7227 if (symaddr - reladdr + max_branch_offset
7228 < 2 * max_branch_offset)
7229 continue;
7230 }
01017ef8 7231
5446cbdf 7232 /* Look for an existing fixup to this address. */
d3e454b9 7233 for (f = branch_fixups; f ; f = f->next)
5446cbdf
AM
7234 if (f->tsec == tsec && f->toff == toff)
7235 break;
252b5132 7236
5446cbdf
AM
7237 if (f == NULL)
7238 {
7239 size_t size;
7240 unsigned long stub_rtype;
25dbc73a 7241
5446cbdf
AM
7242 val = trampoff - roff;
7243 if (val >= max_branch_offset)
7244 /* Oh dear, we can't reach a trampoline. Don't try to add
7245 one. We'll report an error later. */
7246 continue;
252b5132 7247
0e1862bb 7248 if (bfd_link_pic (link_info))
5446cbdf
AM
7249 {
7250 size = 4 * ARRAY_SIZE (shared_stub_entry);
7251 insn_offset = 12;
7252 }
7253 else
7254 {
7255 size = 4 * ARRAY_SIZE (stub_entry);
7256 insn_offset = 0;
7257 }
7258 stub_rtype = R_PPC_RELAX;
7259 if (tsec == htab->plt
7260 || tsec == htab->glink)
7261 {
7262 stub_rtype = R_PPC_RELAX_PLT;
7263 if (r_type == R_PPC_PLTREL24)
7264 stub_rtype = R_PPC_RELAX_PLTREL24;
7265 }
252b5132 7266
5446cbdf
AM
7267 /* Hijack the old relocation. Since we need two
7268 relocations for this use a "composite" reloc. */
7269 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7270 stub_rtype);
7271 irel->r_offset = trampoff + insn_offset;
7272 if (r_type == R_PPC_PLTREL24
7273 && stub_rtype != R_PPC_RELAX_PLTREL24)
7274 irel->r_addend = 0;
7275
7276 /* Record the fixup so we don't do it again this section. */
7277 f = bfd_malloc (sizeof (*f));
d3e454b9 7278 f->next = branch_fixups;
5446cbdf
AM
7279 f->tsec = tsec;
7280 f->toff = toff;
7281 f->trampoff = trampoff;
d3e454b9 7282 branch_fixups = f;
5446cbdf
AM
7283
7284 trampoff += size;
7285 changes++;
25dbc73a
AM
7286 }
7287 else
7288 {
5446cbdf
AM
7289 val = f->trampoff - roff;
7290 if (val >= max_branch_offset)
7291 continue;
252b5132 7292
5446cbdf
AM
7293 /* Nop out the reloc, since we're finalizing things here. */
7294 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7295 }
252b5132 7296
5446cbdf
AM
7297 /* Get the section contents. */
7298 if (contents == NULL)
25dbc73a 7299 {
5446cbdf
AM
7300 /* Get cached copy if it exists. */
7301 if (elf_section_data (isec)->this_hdr.contents != NULL)
7302 contents = elf_section_data (isec)->this_hdr.contents;
25dbc73a 7303 /* Go get them off disk. */
5446cbdf 7304 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
25dbc73a
AM
7305 goto error_return;
7306 }
252b5132 7307
5446cbdf
AM
7308 /* Fix up the existing branch to hit the trampoline. */
7309 hit_addr = contents + roff;
7310 switch (r_type)
7311 {
7312 case R_PPC_REL24:
7313 case R_PPC_LOCAL24PC:
7314 case R_PPC_PLTREL24:
7315 t0 = bfd_get_32 (abfd, hit_addr);
7316 t0 &= ~0x3fffffc;
7317 t0 |= val & 0x3fffffc;
7318 bfd_put_32 (abfd, t0, hit_addr);
7319 break;
252b5132 7320
5446cbdf
AM
7321 case R_PPC_REL14:
7322 case R_PPC_REL14_BRTAKEN:
7323 case R_PPC_REL14_BRNTAKEN:
7324 t0 = bfd_get_32 (abfd, hit_addr);
7325 t0 &= ~0xfffc;
7326 t0 |= val & 0xfffc;
7327 bfd_put_32 (abfd, t0, hit_addr);
7328 break;
7329 }
25dbc73a 7330 }
252b5132 7331
d3e454b9 7332 while (branch_fixups != NULL)
25dbc73a 7333 {
d3e454b9
AM
7334 struct one_branch_fixup *f = branch_fixups;
7335 branch_fixups = branch_fixups->next;
25dbc73a
AM
7336 free (f);
7337 }
5446cbdf 7338 }
252b5132 7339
5446cbdf
AM
7340 workaround_change = FALSE;
7341 newsize = trampoff;
795bc6b3 7342 if (htab->params->ppc476_workaround
0e1862bb 7343 && (!bfd_link_relocatable (link_info)
795bc6b3 7344 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
5446cbdf
AM
7345 {
7346 bfd_vma addr, end_addr;
7347 unsigned int crossings;
795bc6b3 7348 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf
AM
7349
7350 addr = isec->output_section->vma + isec->output_offset;
6128f9cf 7351 end_addr = addr + trampoff;
5446cbdf 7352 addr &= -pagesize;
795bc6b3 7353 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
5446cbdf
AM
7354 if (crossings != 0)
7355 {
7356 /* Keep space aligned, to ensure the patch code itself does
7357 not cross a page. Don't decrease size calculated on a
7358 previous pass as otherwise we might never settle on a layout. */
1e269e9b 7359 newsize = 15 - ((end_addr - 1) & 15);
5446cbdf
AM
7360 newsize += crossings * 16;
7361 if (relax_info->workaround_size < newsize)
7362 {
7363 relax_info->workaround_size = newsize;
7364 workaround_change = TRUE;
5446cbdf
AM
7365 }
7366 /* Ensure relocate_section is called. */
7367 isec->flags |= SEC_RELOC;
7368 }
7369 newsize = trampoff + relax_info->workaround_size;
7370 }
7371
d3e454b9
AM
7372 if (htab->params->pic_fixup > 0)
7373 {
7374 picfixup_size -= relax_info->picfixup_size;
7375 if (picfixup_size != 0)
7376 relax_info->picfixup_size += picfixup_size;
7377 newsize += relax_info->picfixup_size;
7378 }
7379
7380 if (changes != 0 || picfixup_size != 0 || workaround_change)
5446cbdf
AM
7381 isec->size = newsize;
7382
25dbc73a
AM
7383 if (isymbuf != NULL
7384 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 7385 {
25dbc73a
AM
7386 if (! link_info->keep_memory)
7387 free (isymbuf);
252b5132 7388 else
25dbc73a
AM
7389 {
7390 /* Cache the symbols for elf_link_input_bfd. */
7391 symtab_hdr->contents = (unsigned char *) isymbuf;
7392 }
252b5132
RH
7393 }
7394
25dbc73a
AM
7395 if (contents != NULL
7396 && elf_section_data (isec)->this_hdr.contents != contents)
7397 {
53291d1f 7398 if (!changes && !link_info->keep_memory)
25dbc73a
AM
7399 free (contents);
7400 else
7401 {
7402 /* Cache the section contents for elf_link_input_bfd. */
7403 elf_section_data (isec)->this_hdr.contents = contents;
7404 }
7405 }
252b5132 7406
d3e454b9 7407 changes += picfixup_size;
9bc4e62b 7408 if (changes != 0)
25dbc73a 7409 {
9bc4e62b
NS
7410 /* Append sufficient NOP relocs so we can write out relocation
7411 information for the trampolines. */
d4730f92 7412 Elf_Internal_Shdr *rel_hdr;
9bc4e62b
NS
7413 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7414 * sizeof (*new_relocs));
7415 unsigned ix;
5b914448 7416
9bc4e62b
NS
7417 if (!new_relocs)
7418 goto error_return;
7419 memcpy (new_relocs, internal_relocs,
7420 isec->reloc_count * sizeof (*new_relocs));
7421 for (ix = changes; ix--;)
7422 {
7423 irel = new_relocs + ix + isec->reloc_count;
7424
7425 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7426 }
7427 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 7428 free (internal_relocs);
9bc4e62b
NS
7429 elf_section_data (isec)->relocs = new_relocs;
7430 isec->reloc_count += changes;
d4730f92
BS
7431 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7432 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
25dbc73a 7433 }
5446cbdf
AM
7434 else if (internal_relocs != NULL
7435 && elf_section_data (isec)->relocs != internal_relocs)
9bc4e62b 7436 free (internal_relocs);
252b5132 7437
5446cbdf 7438 *again = changes != 0 || workaround_change;
b34976b6 7439 return TRUE;
25dbc73a
AM
7440
7441 error_return:
d3e454b9 7442 while (branch_fixups != NULL)
5446cbdf 7443 {
d3e454b9
AM
7444 struct one_branch_fixup *f = branch_fixups;
7445 branch_fixups = branch_fixups->next;
5446cbdf
AM
7446 free (f);
7447 }
25dbc73a
AM
7448 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7449 free (isymbuf);
7450 if (contents != NULL
7451 && elf_section_data (isec)->this_hdr.contents != contents)
7452 free (contents);
7453 if (internal_relocs != NULL
7454 && elf_section_data (isec)->relocs != internal_relocs)
7455 free (internal_relocs);
7456 return FALSE;
252b5132 7457}
252b5132 7458\f
8a696751
AM
7459/* What to do when ld finds relocations against symbols defined in
7460 discarded sections. */
7461
7462static unsigned int
7463ppc_elf_action_discarded (asection *sec)
7464{
7465 if (strcmp (".fixup", sec->name) == 0)
7466 return 0;
7467
7468 if (strcmp (".got2", sec->name) == 0)
7469 return 0;
7470
7471 return _bfd_elf_default_action_discarded (sec);
7472}
c9a2f333 7473\f
25dbc73a 7474/* Fill in the address for a pointer generated in a linker section. */
252b5132 7475
25dbc73a 7476static bfd_vma
76750a2f 7477elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
7478 elf_linker_section_t *lsect,
7479 struct elf_link_hash_entry *h,
7480 bfd_vma relocation,
2bb04cf2 7481 const Elf_Internal_Rela *rel)
25dbc73a
AM
7482{
7483 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 7484
25dbc73a 7485 BFD_ASSERT (lsect != NULL);
252b5132 7486
25dbc73a 7487 if (h != NULL)
252b5132 7488 {
25dbc73a
AM
7489 /* Handle global symbol. */
7490 struct ppc_elf_link_hash_entry *eh;
252b5132 7491
25dbc73a 7492 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
7493 BFD_ASSERT (eh->elf.def_regular);
7494 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
7495 }
7496 else
7497 {
7498 /* Handle local symbol. */
7499 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 7500
0c8d6e5c 7501 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 7502 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
7503 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7504 }
252b5132 7505
76750a2f
AM
7506 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7507 rel->r_addend,
7508 lsect);
7509 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 7510
76750a2f
AM
7511 /* Offset will always be a multiple of four, so use the bottom bit
7512 as a "written" flag. */
7513 if ((linker_section_ptr->offset & 1) == 0)
7514 {
7515 bfd_put_32 (lsect->section->owner,
7516 relocation + linker_section_ptr->addend,
7517 lsect->section->contents + linker_section_ptr->offset);
7518 linker_section_ptr->offset += 1;
252b5132
RH
7519 }
7520
bd6c6e2b
AM
7521 relocation = (lsect->section->output_section->vma
7522 + lsect->section->output_offset
76750a2f 7523 + linker_section_ptr->offset - 1
bd6c6e2b 7524 - SYM_VAL (lsect->sym));
252b5132 7525
25dbc73a
AM
7526#ifdef DEBUG
7527 fprintf (stderr,
7528 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7529 lsect->name, (long) relocation, (long) relocation);
7530#endif
252b5132 7531
bd6c6e2b 7532 return relocation;
252b5132 7533}
25dbc73a 7534
e054468f
AM
7535#define PPC_LO(v) ((v) & 0xffff)
7536#define PPC_HI(v) (((v) >> 16) & 0xffff)
7537#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7538
7539static void
a7f2871e 7540write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
e054468f
AM
7541 struct bfd_link_info *info)
7542{
7543 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7544 bfd *output_bfd = info->output_bfd;
7545 bfd_vma plt;
e054468f
AM
7546
7547 plt = ((ent->plt.offset & ~1)
7548 + plt_sec->output_section->vma
7549 + plt_sec->output_offset);
e054468f 7550
0e1862bb 7551 if (bfd_link_pic (info))
e054468f
AM
7552 {
7553 bfd_vma got = 0;
7554
7555 if (ent->addend >= 32768)
7556 got = (ent->addend
7557 + ent->sec->output_section->vma
7558 + ent->sec->output_offset);
7559 else if (htab->elf.hgot != NULL)
7560 got = SYM_VAL (htab->elf.hgot);
7561
7562 plt -= got;
7563
7564 if (plt + 0x8000 < 0x10000)
7565 {
7566 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7567 p += 4;
7568 bfd_put_32 (output_bfd, MTCTR_11, p);
7569 p += 4;
7570 bfd_put_32 (output_bfd, BCTR, p);
7571 p += 4;
da3a2088 7572 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
e054468f
AM
7573 p += 4;
7574 }
7575 else
7576 {
7577 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7578 p += 4;
7579 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7580 p += 4;
7581 bfd_put_32 (output_bfd, MTCTR_11, p);
7582 p += 4;
7583 bfd_put_32 (output_bfd, BCTR, p);
7584 p += 4;
7585 }
7586 }
7587 else
7588 {
7589 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7590 p += 4;
7591 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7592 p += 4;
7593 bfd_put_32 (output_bfd, MTCTR_11, p);
7594 p += 4;
7595 bfd_put_32 (output_bfd, BCTR, p);
7596 p += 4;
7597 }
7598}
7599
bd6c6e2b
AM
7600/* Return true if symbol is defined statically. */
7601
7602static bfd_boolean
7603is_static_defined (struct elf_link_hash_entry *h)
7604{
7605 return ((h->root.type == bfd_link_hash_defined
7606 || h->root.type == bfd_link_hash_defweak)
7607 && h->root.u.def.section != NULL
7608 && h->root.u.def.section->output_section != NULL);
7609}
7610
2d0f3896
AM
7611/* If INSN is an opcode that may be used with an @tls operand, return
7612 the transformed insn for TLS optimisation, otherwise return 0. If
7613 REG is non-zero only match an insn with RB or RA equal to REG. */
7614
7615unsigned int
7616_bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7617{
7618 unsigned int rtra;
7619
7620 if ((insn & (0x3f << 26)) != 31 << 26)
7621 return 0;
7622
7623 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7624 rtra = insn & ((1 << 26) - (1 << 16));
7625 else if (((insn >> 16) & 0x1f) == reg)
7626 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7627 else
7628 return 0;
7629
7630 if ((insn & (0x3ff << 1)) == 266 << 1)
7631 /* add -> addi. */
7632 insn = 14 << 26;
7633 else if ((insn & (0x1f << 1)) == 23 << 1
7634 && ((insn & (0x1f << 6)) < 14 << 6
7635 || ((insn & (0x1f << 6)) >= 16 << 6
7636 && (insn & (0x1f << 6)) < 24 << 6)))
7637 /* load and store indexed -> dform. */
7638 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7639 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7640 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7641 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7642 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7643 /* lwax -> lwa. */
7644 insn = (58 << 26) | 2;
7645 else
7646 return 0;
7647 insn |= rtra;
7648 return insn;
7649}
7650
766bc656
AM
7651/* If INSN is an opcode that may be used with an @tprel operand, return
7652 the transformed insn for an undefined weak symbol, ie. with the
7653 thread pointer REG operand removed. Otherwise return 0. */
7654
7655unsigned int
7656_bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7657{
7658 if ((insn & (0x1f << 16)) == reg << 16
7659 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7660 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7661 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7662 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7663 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7664 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7665 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7666 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7667 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7668 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7669 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7670 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7671 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7672 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7673 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7674 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7675 && (insn & 3) != 1)
7676 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7677 && ((insn & 3) == 0 || (insn & 3) == 3))))
7678 {
7679 insn &= ~(0x1f << 16);
7680 }
7681 else if ((insn & (0x1f << 21)) == reg << 21
7682 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7683 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7684 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7685 {
7686 insn &= ~(0x1f << 21);
7687 insn |= (insn & (0x1f << 16)) << 5;
7688 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7689 insn -= 2 >> 26; /* convert to ori,oris */
7690 }
7691 else
7692 insn = 0;
7693 return insn;
7694}
7695
1fe532cf
AM
7696static bfd_boolean
7697is_insn_ds_form (unsigned int insn)
7698{
7699 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7700 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7701 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7702 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7703}
7704
7705static bfd_boolean
7706is_insn_dq_form (unsigned int insn)
7707{
a680de9a
PB
7708 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7709 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7710 && (insn & 3) == 1));
1fe532cf
AM
7711}
7712
252b5132
RH
7713/* The RELOCATE_SECTION function is called by the ELF backend linker
7714 to handle the relocations for a section.
7715
7716 The relocs are always passed as Rela structures; if the section
7717 actually uses Rel structures, the r_addend field will always be
7718 zero.
7719
7720 This function is responsible for adjust the section contents as
7721 necessary, and (if using Rela relocs and generating a
1049f94e 7722 relocatable output file) adjusting the reloc addend as
252b5132
RH
7723 necessary.
7724
7725 This function does not have to worry about setting the reloc
7726 address or the reloc symbol index.
7727
7728 LOCAL_SYMS is a pointer to the swapped in local symbols.
7729
7730 LOCAL_SECTIONS is an array giving the section in the input file
7731 corresponding to the st_shndx field of each local symbol.
7732
7733 The global hash table entry for the global symbols can be found
7734 via elf_sym_hashes (input_bfd).
7735
1049f94e 7736 When generating relocatable output, this function must handle
252b5132
RH
7737 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7738 going to be the section symbol corresponding to the output
7739 section, which means that the addend must be adjusted
7740 accordingly. */
7741
b34976b6 7742static bfd_boolean
55fd94b0
AM
7743ppc_elf_relocate_section (bfd *output_bfd,
7744 struct bfd_link_info *info,
7745 bfd *input_bfd,
7746 asection *input_section,
7747 bfd_byte *contents,
7748 Elf_Internal_Rela *relocs,
7749 Elf_Internal_Sym *local_syms,
7750 asection **local_sections)
252b5132 7751{
7619e7c7
AM
7752 Elf_Internal_Shdr *symtab_hdr;
7753 struct elf_link_hash_entry **sym_hashes;
7754 struct ppc_elf_link_hash_table *htab;
7755 Elf_Internal_Rela *rel;
c316a17c 7756 Elf_Internal_Rela *wrel;
7619e7c7
AM
7757 Elf_Internal_Rela *relend;
7758 Elf_Internal_Rela outrel;
f95f8542 7759 asection *got2;
252b5132 7760 bfd_vma *local_got_offsets;
b34976b6 7761 bfd_boolean ret = TRUE;
4fe5ca5b 7762 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 7763 bfd_boolean is_vxworks_tls;
d3e454b9
AM
7764 unsigned int picfixup_size = 0;
7765 struct ppc_elf_relax_info *relax_info = NULL;
b34976b6 7766
252b5132 7767#ifdef DEBUG
d003868e
AM
7768 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7769 "%ld relocations%s",
7770 input_bfd, input_section,
7771 (long) input_section->reloc_count,
0e1862bb 7772 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
252b5132
RH
7773#endif
7774
a6aa5195
AM
7775 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7776
e47cd125 7777 /* Initialize howto table if not already done. */
8da6118f 7778 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
7779 ppc_elf_howto_init ();
7780
7619e7c7 7781 htab = ppc_elf_hash_table (info);
252b5132 7782 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 7783 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 7784 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
7785 /* We have to handle relocations in vxworks .tls_vars sections
7786 specially, because the dynamic loader is 'weird'. */
0e1862bb 7787 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
3348747a
NS
7788 && !strcmp (input_section->output_section->name,
7789 ".tls_vars"));
d3e454b9
AM
7790 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7791 relax_info = elf_section_data (input_section)->sec_info;
c316a17c 7792 rel = wrel = relocs;
7619e7c7 7793 relend = relocs + input_section->reloc_count;
c316a17c 7794 for (; rel < relend; wrel++, rel++)
252b5132 7795 {
7619e7c7
AM
7796 enum elf_ppc_reloc_type r_type;
7797 bfd_vma addend;
7798 bfd_reloc_status_type r;
7799 Elf_Internal_Sym *sym;
7800 asection *sec;
7801 struct elf_link_hash_entry *h;
7802 const char *sym_name;
252b5132
RH
7803 reloc_howto_type *howto;
7804 unsigned long r_symndx;
7805 bfd_vma relocation;
91d6fa6a 7806 bfd_vma branch_bit, from;
7619e7c7
AM
7807 bfd_boolean unresolved_reloc;
7808 bfd_boolean warned;
7809 unsigned int tls_type, tls_mask, tls_gd;
e054468f 7810 struct plt_entry **ifunc;
86c95733 7811 struct reloc_howto_struct alt_howto;
7619e7c7 7812
c316a17c 7813 again:
55fd94b0
AM
7814 r_type = ELF32_R_TYPE (rel->r_info);
7815 sym = NULL;
7816 sec = NULL;
7817 h = NULL;
7619e7c7
AM
7818 unresolved_reloc = FALSE;
7819 warned = FALSE;
252b5132 7820 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 7821
252b5132
RH
7822 if (r_symndx < symtab_hdr->sh_info)
7823 {
7824 sym = local_syms + r_symndx;
7825 sec = local_sections[r_symndx];
26c61ae5 7826 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 7827
8517fae7 7828 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
7829 }
7830 else
7831 {
62d887d4
L
7832 bfd_boolean ignored;
7833
b2a8e766
AM
7834 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7835 r_symndx, symtab_hdr, sym_hashes,
7836 h, sec, relocation,
62d887d4 7837 unresolved_reloc, warned, ignored);
9abc968f 7838
252b5132 7839 sym_name = h->root.root.string;
7619e7c7
AM
7840 }
7841
dbaa2011 7842 if (sec != NULL && discarded_section (sec))
ab96bf03
AM
7843 {
7844 /* For relocs against symbols from removed linkonce sections,
7845 or sections discarded by a linker script, we just want the
7846 section contents zeroed. Avoid any special processing. */
7847 howto = NULL;
7848 if (r_type < R_PPC_max)
7849 howto = ppc_elf_howto_table[r_type];
c316a17c
AM
7850
7851 _bfd_clear_contents (howto, input_bfd, input_section,
7852 contents + rel->r_offset);
7853 wrel->r_offset = rel->r_offset;
7854 wrel->r_info = 0;
7855 wrel->r_addend = 0;
7856
7857 /* For ld -r, remove relocations in debug sections against
7858 sections defined in discarded sections. Not done for
7859 non-debug to preserve relocs in .eh_frame which the
7860 eh_frame editing code expects to be present. */
7861 if (bfd_link_relocatable (info)
7862 && (input_section->flags & SEC_DEBUGGING))
7863 wrel--;
7864
7865 continue;
ab96bf03
AM
7866 }
7867
0e1862bb 7868 if (bfd_link_relocatable (info))
ab96bf03
AM
7869 {
7870 if (got2 != NULL
7871 && r_type == R_PPC_PLTREL24
f75e0e33 7872 && rel->r_addend != 0)
ab96bf03
AM
7873 {
7874 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7875 addend specifies the GOT pointer offset within .got2. */
7876 rel->r_addend += got2->output_offset;
7877 }
53291d1f
AM
7878 if (r_type != R_PPC_RELAX_PLT
7879 && r_type != R_PPC_RELAX_PLTREL24
7880 && r_type != R_PPC_RELAX)
c316a17c 7881 goto copy_reloc;
ab96bf03
AM
7882 }
7883
7619e7c7
AM
7884 /* TLS optimizations. Replace instruction sequences and relocs
7885 based on information we collected in tls_optimize. We edit
7886 RELOCS so that --emit-relocs will output something sensible
7887 for the final instruction stream. */
7888 tls_mask = 0;
7889 tls_gd = 0;
727fc41e
AM
7890 if (h != NULL)
7891 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7892 else if (local_got_offsets != NULL)
7619e7c7 7893 {
e054468f 7894 struct plt_entry **local_plt;
727fc41e 7895 char *lgot_masks;
e054468f
AM
7896 local_plt
7897 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7898 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
727fc41e 7899 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM
7900 }
7901
7902 /* Ensure reloc mapping code below stays sane. */
7903 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7904 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7905 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7906 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7907 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7908 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7909 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7910 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7911 abort ();
7912 switch (r_type)
7913 {
7914 default:
7915 break;
7916
7917 case R_PPC_GOT_TPREL16:
7918 case R_PPC_GOT_TPREL16_LO:
e054468f 7919 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7920 && (tls_mask & TLS_TPREL) == 0)
7921 {
7922 bfd_vma insn;
91d6fa6a 7923
c316a17c
AM
7924 insn = bfd_get_32 (output_bfd,
7925 contents + rel->r_offset - d_offset);
7619e7c7
AM
7926 insn &= 31 << 21;
7927 insn |= 0x3c020000; /* addis 0,2,0 */
c316a17c
AM
7928 bfd_put_32 (output_bfd, insn,
7929 contents + rel->r_offset - d_offset);
7619e7c7
AM
7930 r_type = R_PPC_TPREL16_HA;
7931 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7932 }
7933 break;
7934
7935 case R_PPC_TLS:
e054468f 7936 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7937 && (tls_mask & TLS_TPREL) == 0)
7938 {
2d0f3896
AM
7939 bfd_vma insn;
7940
7619e7c7 7941 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM
7942 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7943 if (insn == 0)
7619e7c7 7944 abort ();
7619e7c7
AM
7945 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7946 r_type = R_PPC_TPREL16_LO;
7947 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 7948
7619e7c7 7949 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
7950 PPC_TPREL16_LO which is at low-order half-word. */
7951 rel->r_offset += d_offset;
7619e7c7
AM
7952 }
7953 break;
7954
7955 case R_PPC_GOT_TLSGD16_HI:
7956 case R_PPC_GOT_TLSGD16_HA:
7957 tls_gd = TLS_TPRELGD;
e054468f 7958 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7619e7c7
AM
7959 goto tls_gdld_hi;
7960 break;
7961
7962 case R_PPC_GOT_TLSLD16_HI:
7963 case R_PPC_GOT_TLSLD16_HA:
e054468f 7964 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7
AM
7965 {
7966 tls_gdld_hi:
7967 if ((tls_mask & tls_gd) != 0)
7968 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7969 + R_PPC_GOT_TPREL16);
7970 else
7971 {
4fe5ca5b 7972 rel->r_offset -= d_offset;
b86ac8e3 7973 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7619e7c7
AM
7974 r_type = R_PPC_NONE;
7975 }
7976 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7977 }
7978 break;
7979
7980 case R_PPC_GOT_TLSGD16:
7981 case R_PPC_GOT_TLSGD16_LO:
7982 tls_gd = TLS_TPRELGD;
e054468f 7983 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 7984 goto tls_ldgd_opt;
7619e7c7
AM
7985 break;
7986
7987 case R_PPC_GOT_TLSLD16:
7988 case R_PPC_GOT_TLSLD16_LO:
e054468f 7989 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7 7990 {
3a71aa26 7991 unsigned int insn1, insn2;
b7fcf6f6 7992 bfd_vma offset;
7619e7c7 7993
b7fcf6f6 7994 tls_ldgd_opt:
727fc41e
AM
7995 offset = (bfd_vma) -1;
7996 /* If not using the newer R_PPC_TLSGD/LD to mark
7997 __tls_get_addr calls, we must trust that the call
7998 stays with its arg setup insns, ie. that the next
7999 reloc is the __tls_get_addr call associated with
8000 the current reloc. Edit both insns. */
8001 if (input_section->has_tls_get_addr_call
8002 && rel + 1 < relend
8003 && branch_reloc_hash_match (input_bfd, rel + 1,
8004 htab->tls_get_addr))
8005 offset = rel[1].r_offset;
b86ac8e3
AM
8006 /* We read the low GOT_TLS insn because we need to keep
8007 the destination reg. It may be something other than
8008 the usual r3, and moved to r3 before the call by
8009 intervening code. */
8010 insn1 = bfd_get_32 (output_bfd,
8011 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
8012 if ((tls_mask & tls_gd) != 0)
8013 {
8014 /* IE */
b86ac8e3 8015 insn1 &= (0x1f << 21) | (0x1f << 16);
b7fcf6f6 8016 insn1 |= 32 << 26; /* lwz */
727fc41e
AM
8017 if (offset != (bfd_vma) -1)
8018 {
f58d5a2d 8019 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
8020 insn2 = 0x7c631214; /* add 3,3,2 */
8021 bfd_put_32 (output_bfd, insn2, contents + offset);
8022 }
b7fcf6f6
AM
8023 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8024 + R_PPC_GOT_TPREL16);
8025 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8026 }
8027 else
8028 {
8029 /* LE */
b86ac8e3
AM
8030 insn1 &= 0x1f << 21;
8031 insn1 |= 0x3c020000; /* addis r,2,0 */
7619e7c7
AM
8032 if (tls_gd == 0)
8033 {
b7fcf6f6 8034 /* Was an LD reloc. */
1d483afe
AM
8035 for (r_symndx = 0;
8036 r_symndx < symtab_hdr->sh_info;
8037 r_symndx++)
8038 if (local_sections[r_symndx] == sec)
8039 break;
8040 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 8041 r_symndx = STN_UNDEF;
b7fcf6f6 8042 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 8043 if (r_symndx != STN_UNDEF)
1d483afe
AM
8044 rel->r_addend -= (local_syms[r_symndx].st_value
8045 + sec->output_offset
8046 + sec->output_section->vma);
7619e7c7 8047 }
b7fcf6f6
AM
8048 r_type = R_PPC_TPREL16_HA;
8049 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM
8050 if (offset != (bfd_vma) -1)
8051 {
8052 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8053 rel[1].r_offset = offset + d_offset;
8054 rel[1].r_addend = rel->r_addend;
8055 insn2 = 0x38630000; /* addi 3,3,0 */
8056 bfd_put_32 (output_bfd, insn2, contents + offset);
8057 }
b7fcf6f6
AM
8058 }
8059 bfd_put_32 (output_bfd, insn1,
8060 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
8061 if (tls_gd == 0)
8062 {
8063 /* We changed the symbol on an LD reloc. Start over
8064 in order to get h, sym, sec etc. right. */
c316a17c 8065 goto again;
7619e7c7 8066 }
252b5132 8067 }
7619e7c7 8068 break;
727fc41e
AM
8069
8070 case R_PPC_TLSGD:
e054468f 8071 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
727fc41e
AM
8072 {
8073 unsigned int insn2;
8074 bfd_vma offset = rel->r_offset;
8075
8076 if ((tls_mask & TLS_TPRELGD) != 0)
8077 {
8078 /* IE */
8079 r_type = R_PPC_NONE;
8080 insn2 = 0x7c631214; /* add 3,3,2 */
8081 }
8082 else
8083 {
8084 /* LE */
8085 r_type = R_PPC_TPREL16_LO;
8086 rel->r_offset += d_offset;
8087 insn2 = 0x38630000; /* addi 3,3,0 */
8088 }
8089 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8090 bfd_put_32 (output_bfd, insn2, contents + offset);
8091 /* Zap the reloc on the _tls_get_addr call too. */
8092 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 8093 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
8094 }
8095 break;
8096
8097 case R_PPC_TLSLD:
e054468f 8098 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
727fc41e
AM
8099 {
8100 unsigned int insn2;
8101
8102 for (r_symndx = 0;
8103 r_symndx < symtab_hdr->sh_info;
8104 r_symndx++)
8105 if (local_sections[r_symndx] == sec)
8106 break;
8107 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 8108 r_symndx = STN_UNDEF;
727fc41e 8109 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 8110 if (r_symndx != STN_UNDEF)
727fc41e
AM
8111 rel->r_addend -= (local_syms[r_symndx].st_value
8112 + sec->output_offset
8113 + sec->output_section->vma);
8114
8115 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8116 rel->r_offset += d_offset;
8117 insn2 = 0x38630000; /* addi 3,3,0 */
8118 bfd_put_32 (output_bfd, insn2,
8119 contents + rel->r_offset - d_offset);
8120 /* Zap the reloc on the _tls_get_addr call too. */
8121 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
f58d5a2d 8122 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
c316a17c 8123 goto again;
727fc41e
AM
8124 }
8125 break;
7619e7c7
AM
8126 }
8127
8128 /* Handle other relocations that tweak non-addend part of insn. */
8129 branch_bit = 0;
8130 switch (r_type)
8131 {
8132 default:
8133 break;
8134
8135 /* Branch taken prediction relocations. */
8136 case R_PPC_ADDR14_BRTAKEN:
8137 case R_PPC_REL14_BRTAKEN:
8138 branch_bit = BRANCH_PREDICT_BIT;
8139 /* Fall thru */
8140
4cc11e76 8141 /* Branch not taken prediction relocations. */
7619e7c7
AM
8142 case R_PPC_ADDR14_BRNTAKEN:
8143 case R_PPC_REL14_BRNTAKEN:
91d6fa6a
NC
8144 {
8145 bfd_vma insn;
7619e7c7 8146
91d6fa6a
NC
8147 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8148 insn &= ~BRANCH_PREDICT_BIT;
8149 insn |= branch_bit;
7619e7c7 8150
91d6fa6a
NC
8151 from = (rel->r_offset
8152 + input_section->output_offset
8153 + input_section->output_section->vma);
7619e7c7 8154
91d6fa6a
NC
8155 /* Invert 'y' bit if not the default. */
8156 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8157 insn ^= BRANCH_PREDICT_BIT;
8158
8159 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8160 break;
8161 }
252b5132
RH
8162 }
8163
d3e454b9
AM
8164 if (ELIMINATE_COPY_RELOCS
8165 && h != NULL
8166 && !h->def_regular
8167 && h->protected_def
8168 && ppc_elf_hash_entry (h)->has_addr16_ha
8169 && ppc_elf_hash_entry (h)->has_addr16_lo
8170 && htab->params->pic_fixup > 0)
8171 {
8172 /* Convert lis;addi or lis;load/store accessing a protected
8173 variable defined in a shared library to PIC. */
8174 unsigned int insn;
8175
8176 if (r_type == R_PPC_ADDR16_HA)
8177 {
8178 insn = bfd_get_32 (output_bfd,
8179 contents + rel->r_offset - d_offset);
8180 if ((insn & (0x3f << 26)) == (15u << 26)
8181 && (insn & (0x1f << 16)) == 0 /* lis */)
8182 {
8183 bfd_byte *p;
8184 bfd_vma off;
8185 bfd_vma got_addr;
8186
8187 p = (contents + input_section->size
8188 - relax_info->workaround_size
8189 - relax_info->picfixup_size
8190 + picfixup_size);
8191 off = (p - contents) - (rel->r_offset - d_offset);
8192 if (off > 0x1fffffc || (off & 3) != 0)
8193 info->callbacks->einfo
8194 (_("%P: %H: fixup branch overflow\n"),
8195 input_bfd, input_section, rel->r_offset);
8196
8197 bfd_put_32 (output_bfd, B | off,
8198 contents + rel->r_offset - d_offset);
8199 got_addr = (htab->got->output_section->vma
8200 + htab->got->output_offset
8201 + (h->got.offset & ~1));
c316a17c
AM
8202 wrel->r_offset = (p - contents) + d_offset;
8203 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8204 wrel->r_addend = got_addr;
d3e454b9
AM
8205 insn &= ~0xffff;
8206 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8207 bfd_put_32 (output_bfd, insn, p);
8208
8209 /* Convert lis to lwz, loading address from GOT. */
8210 insn &= ~0xffff;
8211 insn ^= (32u ^ 15u) << 26;
8212 insn |= (insn & (0x1f << 21)) >> 5;
8213 insn |= got_addr & 0xffff;
8214 bfd_put_32 (output_bfd, insn, p + 4);
8215
8216 bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8217 picfixup_size += 12;
8218
8219 /* Use one of the spare relocs, so --emit-relocs
8220 output is reasonable. */
8221 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
c316a17c
AM
8222 wrel++, rel++;
8223 rel->r_offset = wrel[-1].r_offset + 4;
d3e454b9 8224 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
c316a17c 8225 rel->r_addend = wrel[-1].r_addend;
d3e454b9
AM
8226
8227 /* Continue on as if we had a got reloc, to output
8228 dynamic reloc. */
8229 r_type = R_PPC_GOT16_LO;
8230 }
8231 else
8232 info->callbacks->einfo
8233 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8234 input_bfd, input_section, rel->r_offset,
8235 "R_PPC_ADDR16_HA", insn);
8236 }
8237 else if (r_type == R_PPC_ADDR16_LO)
8238 {
8239 insn = bfd_get_32 (output_bfd,
8240 contents + rel->r_offset - d_offset);
8241 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8242 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8243 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8244 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8245 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8246 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8247 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8248 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8249 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8250 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8251 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8252 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8253 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8254 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8255 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8256 && (insn & 3) != 1)
8257 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8258 && ((insn & 3) == 0 || (insn & 3) == 3)))
8259 {
8260 /* Arrange to apply the reloc addend, if any. */
8261 relocation = 0;
8262 unresolved_reloc = FALSE;
8263 rel->r_info = ELF32_R_INFO (0, r_type);
8264 }
8265 else
8266 info->callbacks->einfo
8267 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8268 input_bfd, input_section, rel->r_offset,
8269 "R_PPC_ADDR16_LO", insn);
8270 }
8271 }
8272
e054468f 8273 ifunc = NULL;
25f23106 8274 if (!htab->is_vxworks)
e054468f 8275 {
de972ffa
AM
8276 struct plt_entry *ent;
8277
e054468f
AM
8278 if (h != NULL)
8279 {
8280 if (h->type == STT_GNU_IFUNC)
8281 ifunc = &h->plt.plist;
8282 }
de972ffa
AM
8283 else if (local_got_offsets != NULL
8284 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
e054468f 8285 {
de972ffa 8286 struct plt_entry **local_plt;
e054468f 8287
de972ffa
AM
8288 local_plt = (struct plt_entry **) (local_got_offsets
8289 + symtab_hdr->sh_info);
8290 ifunc = local_plt + r_symndx;
e054468f 8291 }
e054468f 8292
de972ffa
AM
8293 ent = NULL;
8294 if (ifunc != NULL
0e1862bb 8295 && (!bfd_link_pic (info)
de972ffa
AM
8296 || is_branch_reloc (r_type)))
8297 {
8298 addend = 0;
0e1862bb 8299 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
de972ffa
AM
8300 addend = rel->r_addend;
8301 ent = find_plt_ent (ifunc, got2, addend);
8302 }
8303 if (ent != NULL)
8304 {
888a7fc3
AM
8305 if (bfd_link_pic (info)
8306 && ent->sec != got2
8307 && htab->plt_type != PLT_NEW
8308 && (!htab->elf.dynamic_sections_created
8309 || h == NULL
8310 || h->dynindx == -1))
8311 {
8312 /* Uh oh, we are going to create a pic glink stub
8313 for an ifunc (here for h == NULL and later in
8314 finish_dynamic_symbol for h != NULL), and
8315 apparently are using code compiled with
8316 -mbss-plt. The difficulty is that -mbss-plt code
8317 gives no indication via a magic PLTREL24 addend
8318 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8319 is pointing into a .got2 section (and how far
8320 into .got2). */
8321 info->callbacks->einfo
8322 (_("%X%P: %H: unsupported bss-plt -fPIC ifunc %s\n"),
8323 input_bfd, input_section, rel->r_offset, sym_name);
8324 }
e054468f
AM
8325 if (h == NULL && (ent->plt.offset & 1) == 0)
8326 {
8327 Elf_Internal_Rela rela;
8328 bfd_byte *loc;
8329
8330 rela.r_offset = (htab->iplt->output_section->vma
8331 + htab->iplt->output_offset
8332 + ent->plt.offset);
8333 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8334 rela.r_addend = relocation;
25f23106
AM
8335 loc = htab->reliplt->contents;
8336 loc += (htab->reliplt->reloc_count++
8337 * sizeof (Elf32_External_Rela));
e054468f
AM
8338 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8339
8340 ent->plt.offset |= 1;
8341 }
8342 if (h == NULL && (ent->glink_offset & 1) == 0)
8343 {
a7f2871e
AM
8344 unsigned char *p = ((unsigned char *) htab->glink->contents
8345 + ent->glink_offset);
8346 write_glink_stub (ent, htab->iplt, p, info);
e054468f
AM
8347 ent->glink_offset |= 1;
8348 }
8349
8350 unresolved_reloc = FALSE;
8351 if (htab->plt_type == PLT_NEW
8352 || !htab->elf.dynamic_sections_created
c7e17e05
AM
8353 || h == NULL
8354 || h->dynindx == -1)
e054468f
AM
8355 relocation = (htab->glink->output_section->vma
8356 + htab->glink->output_offset
8357 + (ent->glink_offset & ~1));
8358 else
8359 relocation = (htab->plt->output_section->vma
8360 + htab->plt->output_offset
8361 + ent->plt.offset);
8362 }
8363 }
8364
7619e7c7
AM
8365 addend = rel->r_addend;
8366 tls_type = 0;
8367 howto = NULL;
55fd94b0
AM
8368 if (r_type < R_PPC_max)
8369 howto = ppc_elf_howto_table[r_type];
7619e7c7 8370 switch (r_type)
252b5132
RH
8371 {
8372 default:
25f53a85 8373 info->callbacks->einfo
8de848d8 8374 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
d003868e 8375 input_bfd, (int) r_type, sym_name);
252b5132
RH
8376
8377 bfd_set_error (bfd_error_bad_value);
b34976b6 8378 ret = FALSE;
c316a17c 8379 goto copy_reloc;
252b5132 8380
7619e7c7
AM
8381 case R_PPC_NONE:
8382 case R_PPC_TLS:
727fc41e
AM
8383 case R_PPC_TLSGD:
8384 case R_PPC_TLSLD:
7619e7c7
AM
8385 case R_PPC_EMB_MRKREF:
8386 case R_PPC_GNU_VTINHERIT:
8387 case R_PPC_GNU_VTENTRY:
c316a17c 8388 goto copy_reloc;
7595d193 8389
7619e7c7
AM
8390 /* GOT16 relocations. Like an ADDR16 using the symbol's
8391 address in the GOT as relocation value instead of the
8392 symbol's value itself. Also, create a GOT entry for the
8393 symbol and put the symbol value there. */
8394 case R_PPC_GOT_TLSGD16:
8395 case R_PPC_GOT_TLSGD16_LO:
8396 case R_PPC_GOT_TLSGD16_HI:
8397 case R_PPC_GOT_TLSGD16_HA:
8398 tls_type = TLS_TLS | TLS_GD;
8399 goto dogot;
8400
8401 case R_PPC_GOT_TLSLD16:
8402 case R_PPC_GOT_TLSLD16_LO:
8403 case R_PPC_GOT_TLSLD16_HI:
8404 case R_PPC_GOT_TLSLD16_HA:
8405 tls_type = TLS_TLS | TLS_LD;
8406 goto dogot;
8407
8408 case R_PPC_GOT_TPREL16:
8409 case R_PPC_GOT_TPREL16_LO:
8410 case R_PPC_GOT_TPREL16_HI:
8411 case R_PPC_GOT_TPREL16_HA:
8412 tls_type = TLS_TLS | TLS_TPREL;
8413 goto dogot;
8414
8415 case R_PPC_GOT_DTPREL16:
8416 case R_PPC_GOT_DTPREL16_LO:
8417 case R_PPC_GOT_DTPREL16_HI:
8418 case R_PPC_GOT_DTPREL16_HA:
8419 tls_type = TLS_TLS | TLS_DTPREL;
8420 goto dogot;
8421
8422 case R_PPC_GOT16:
8423 case R_PPC_GOT16_LO:
8424 case R_PPC_GOT16_HI:
8425 case R_PPC_GOT16_HA:
727fc41e 8426 tls_mask = 0;
7619e7c7
AM
8427 dogot:
8428 {
8429 /* Relocation is to the entry for this symbol in the global
8430 offset table. */
8431 bfd_vma off;
8432 bfd_vma *offp;
8433 unsigned long indx;
8434
8435 if (htab->got == NULL)
8436 abort ();
8437
8438 indx = 0;
8439 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 8440 && (h == NULL
f5385ebf 8441 || !h->def_dynamic))
7619e7c7
AM
8442 offp = &htab->tlsld_got.offset;
8443 else if (h != NULL)
8444 {
8445 bfd_boolean dyn;
8446 dyn = htab->elf.dynamic_sections_created;
0e1862bb
L
8447 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8448 || (bfd_link_pic (info)
7619e7c7
AM
8449 && SYMBOL_REFERENCES_LOCAL (info, h)))
8450 /* This is actually a static link, or it is a
8451 -Bsymbolic link and the symbol is defined
8452 locally, or the symbol was forced to be local
8453 because of a version file. */
8454 ;
8455 else
8456 {
14acf4dc 8457 BFD_ASSERT (h->dynindx != -1);
7619e7c7
AM
8458 indx = h->dynindx;
8459 unresolved_reloc = FALSE;
8460 }
8461 offp = &h->got.offset;
8462 }
8463 else
8464 {
8465 if (local_got_offsets == NULL)
8466 abort ();
8467 offp = &local_got_offsets[r_symndx];
8468 }
8469
8470 /* The offset must always be a multiple of 4. We use the
8471 least significant bit to record whether we have already
8472 processed this entry. */
8473 off = *offp;
8474 if ((off & 1) != 0)
8475 off &= ~1;
8476 else
8477 {
70bccea4
AM
8478 unsigned int tls_m = (tls_mask
8479 & (TLS_LD | TLS_GD | TLS_DTPREL
8480 | TLS_TPREL | TLS_TPRELGD));
8481
8482 if (offp == &htab->tlsld_got.offset)
8483 tls_m = TLS_LD;
8484 else if (h == NULL
f5385ebf 8485 || !h->def_dynamic)
70bccea4
AM
8486 tls_m &= ~TLS_LD;
8487
8488 /* We might have multiple got entries for this sym.
8489 Initialize them all. */
8490 do
7619e7c7 8491 {
70bccea4
AM
8492 int tls_ty = 0;
8493
8494 if ((tls_m & TLS_LD) != 0)
7619e7c7 8495 {
70bccea4
AM
8496 tls_ty = TLS_TLS | TLS_LD;
8497 tls_m &= ~TLS_LD;
8498 }
8499 else if ((tls_m & TLS_GD) != 0)
8500 {
8501 tls_ty = TLS_TLS | TLS_GD;
8502 tls_m &= ~TLS_GD;
8503 }
8504 else if ((tls_m & TLS_DTPREL) != 0)
8505 {
8506 tls_ty = TLS_TLS | TLS_DTPREL;
8507 tls_m &= ~TLS_DTPREL;
8508 }
8509 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8510 {
8511 tls_ty = TLS_TLS | TLS_TPREL;
8512 tls_m = 0;
7619e7c7 8513 }
7619e7c7 8514
70bccea4 8515 /* Generate relocs for the dynamic linker. */
0e1862bb 8516 if ((bfd_link_pic (info) || indx != 0)
d6e14abc
AM
8517 && (offp == &htab->tlsld_got.offset
8518 || h == NULL
4e795f50
AM
8519 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8520 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 8521 {
91e21fb7 8522 asection *rsec = htab->relgot;
91d6fa6a 8523 bfd_byte * loc;
91e21fb7 8524
0bed072f
AM
8525 if (ifunc != NULL)
8526 rsec = htab->reliplt;
70bccea4
AM
8527 outrel.r_offset = (htab->got->output_section->vma
8528 + htab->got->output_offset
8529 + off);
e515b051 8530 outrel.r_addend = 0;
70bccea4
AM
8531 if (tls_ty & (TLS_LD | TLS_GD))
8532 {
8533 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
8534 if (tls_ty == (TLS_TLS | TLS_GD))
8535 {
25f23106
AM
8536 loc = rsec->contents;
8537 loc += (rsec->reloc_count++
70bccea4
AM
8538 * sizeof (Elf32_External_Rela));
8539 bfd_elf32_swap_reloca_out (output_bfd,
8540 &outrel, loc);
e515b051 8541 outrel.r_offset += 4;
70bccea4
AM
8542 outrel.r_info
8543 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
8544 }
8545 }
8546 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8547 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8548 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8549 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
25f23106 8550 else if (indx != 0)
70bccea4 8551 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
25f23106
AM
8552 else if (ifunc != NULL)
8553 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8554 else
8555 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
d6e14abc 8556 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM
8557 {
8558 outrel.r_addend += relocation;
8559 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
989f9879
AM
8560 {
8561 if (htab->elf.tls_sec == NULL)
8562 outrel.r_addend = 0;
8563 else
8564 outrel.r_addend -= htab->elf.tls_sec->vma;
8565 }
e515b051 8566 }
25f23106
AM
8567 loc = rsec->contents;
8568 loc += (rsec->reloc_count++
70bccea4
AM
8569 * sizeof (Elf32_External_Rela));
8570 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
8571 }
8572
70bccea4
AM
8573 /* Init the .got section contents if we're not
8574 emitting a reloc. */
8575 else
7619e7c7 8576 {
70bccea4
AM
8577 bfd_vma value = relocation;
8578
7b609f53
AM
8579 if (tls_ty == (TLS_TLS | TLS_LD))
8580 value = 1;
8581 else if (tls_ty != 0)
70bccea4 8582 {
989f9879
AM
8583 if (htab->elf.tls_sec == NULL)
8584 value = 0;
8585 else
8586 {
8587 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8588 if (tls_ty == (TLS_TLS | TLS_TPREL))
8589 value += DTP_OFFSET - TP_OFFSET;
8590 }
70bccea4 8591
7b609f53
AM
8592 if (tls_ty == (TLS_TLS | TLS_GD))
8593 {
8594 bfd_put_32 (output_bfd, value,
8595 htab->got->contents + off + 4);
8596 value = 1;
8597 }
70bccea4 8598 }
70bccea4
AM
8599 bfd_put_32 (output_bfd, value,
8600 htab->got->contents + off);
7619e7c7 8601 }
70bccea4
AM
8602
8603 off += 4;
8604 if (tls_ty & (TLS_LD | TLS_GD))
8605 off += 4;
7619e7c7 8606 }
70bccea4
AM
8607 while (tls_m != 0);
8608
8609 off = *offp;
8610 *offp = off | 1;
7619e7c7
AM
8611 }
8612
8613 if (off >= (bfd_vma) -2)
8614 abort ();
8615
70bccea4
AM
8616 if ((tls_type & TLS_TLS) != 0)
8617 {
8618 if (tls_type != (TLS_TLS | TLS_LD))
8619 {
8620 if ((tls_mask & TLS_LD) != 0
8621 && !(h == NULL
f5385ebf 8622 || !h->def_dynamic))
70bccea4
AM
8623 off += 8;
8624 if (tls_type != (TLS_TLS | TLS_GD))
8625 {
8626 if ((tls_mask & TLS_GD) != 0)
8627 off += 8;
8628 if (tls_type != (TLS_TLS | TLS_DTPREL))
8629 {
8630 if ((tls_mask & TLS_DTPREL) != 0)
8631 off += 4;
8632 }
8633 }
8634 }
8635 }
8636
d3e454b9
AM
8637 /* If here for a picfixup, we're done. */
8638 if (r_type != ELF32_R_TYPE (rel->r_info))
c316a17c 8639 goto copy_reloc;
d3e454b9 8640
e87d4038
AM
8641 relocation = (htab->got->output_section->vma
8642 + htab->got->output_offset
8643 + off
8644 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
8645
8646 /* Addends on got relocations don't make much sense.
8647 x+off@got is actually x@got+off, and since the got is
8648 generated by a hash table traversal, the value in the
8649 got at entry m+n bears little relation to the entry m. */
8650 if (addend != 0)
25f53a85 8651 info->callbacks->einfo
8de848d8 8652 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
25f53a85 8653 input_bfd, input_section, rel->r_offset,
7b609f53 8654 howto->name,
7619e7c7
AM
8655 sym_name);
8656 }
86c95733 8657 break;
7619e7c7 8658
86c95733 8659 /* Relocations that need no special processing. */
7619e7c7 8660 case R_PPC_LOCAL24PC:
252b5132
RH
8661 /* It makes no sense to point a local relocation
8662 at a symbol not in this object. */
7b609f53 8663 if (unresolved_reloc)
252b5132 8664 {
1a72702b
AM
8665 (*info->callbacks->undefined_symbol) (info,
8666 h->root.root.string,
8667 input_bfd,
8668 input_section,
8669 rel->r_offset,
8670 TRUE);
c316a17c 8671 goto copy_reloc;
252b5132 8672 }
888a7fc3
AM
8673 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8674 {
8675 /* @local on an ifunc does not really make sense since
8676 the ifunc resolver can take you anywhere. More
8677 seriously, calls to ifuncs must go through a plt call
8678 stub, and for pic the plt call stubs uses r30 to
8679 access the PLT. The problem is that a call that is
8680 local won't have the +32k reloc addend trick marking
8681 -fPIC code, so the linker won't know whether r30 is
8682 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8683 info->callbacks->einfo (_("%X%P: %H: @local call to ifunc %s\n"),
8684 input_bfd, input_section, rel->r_offset,
8685 h->root.root.string);
8686 }
252b5132
RH
8687 break;
8688
7619e7c7
AM
8689 case R_PPC_DTPREL16:
8690 case R_PPC_DTPREL16_LO:
8691 case R_PPC_DTPREL16_HI:
8692 case R_PPC_DTPREL16_HA:
989f9879
AM
8693 if (htab->elf.tls_sec != NULL)
8694 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8695 break;
8696
70bccea4
AM
8697 /* Relocations that may need to be propagated if this is a shared
8698 object. */
7619e7c7
AM
8699 case R_PPC_TPREL16:
8700 case R_PPC_TPREL16_LO:
8701 case R_PPC_TPREL16_HI:
8702 case R_PPC_TPREL16_HA:
766bc656
AM
8703 if (h != NULL
8704 && h->root.type == bfd_link_hash_undefweak
8705 && h->dynindx == -1)
8706 {
8707 /* Make this relocation against an undefined weak symbol
8708 resolve to zero. This is really just a tweak, since
8709 code using weak externs ought to check that they are
8710 defined before using them. */
8711 bfd_byte *p = contents + rel->r_offset - d_offset;
8712 unsigned int insn = bfd_get_32 (output_bfd, p);
8713 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8714 if (insn != 0)
8715 bfd_put_32 (output_bfd, insn, p);
8716 break;
8717 }
989f9879
AM
8718 if (htab->elf.tls_sec != NULL)
8719 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8720 /* The TPREL16 relocs shouldn't really be used in shared
8721 libs as they will result in DT_TEXTREL being set, but
8722 support them anyway. */
8723 goto dodyn;
8724
8725 case R_PPC_TPREL32:
989f9879
AM
8726 if (htab->elf.tls_sec != NULL)
8727 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8728 goto dodyn;
8729
8730 case R_PPC_DTPREL32:
989f9879
AM
8731 if (htab->elf.tls_sec != NULL)
8732 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8733 goto dodyn;
8734
e515b051
AM
8735 case R_PPC_DTPMOD32:
8736 relocation = 1;
8737 addend = 0;
8738 goto dodyn;
8739
d7128ce4
AM
8740 case R_PPC_REL16:
8741 case R_PPC_REL16_LO:
8742 case R_PPC_REL16_HI:
8743 case R_PPC_REL16_HA:
a680de9a 8744 case R_PPC_REL16DX_HA:
d7128ce4
AM
8745 break;
8746
7619e7c7 8747 case R_PPC_REL32:
625af618
AM
8748 if (h == NULL || h == htab->elf.hgot)
8749 break;
8750 /* fall through */
8751
8752 case R_PPC_ADDR32:
8753 case R_PPC_ADDR16:
8754 case R_PPC_ADDR16_LO:
8755 case R_PPC_ADDR16_HI:
8756 case R_PPC_ADDR16_HA:
8757 case R_PPC_UADDR32:
8758 case R_PPC_UADDR16:
8759 goto dodyn;
8760
b9c361e0
JL
8761 case R_PPC_VLE_REL8:
8762 case R_PPC_VLE_REL15:
8763 case R_PPC_VLE_REL24:
625af618 8764 case R_PPC_REL24:
7619e7c7
AM
8765 case R_PPC_REL14:
8766 case R_PPC_REL14_BRTAKEN:
8767 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
8768 /* If these relocations are not to a named symbol, they can be
8769 handled right here, no need to bother the dynamic linker. */
89200bf8 8770 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 8771 || h == htab->elf.hgot)
252b5132 8772 break;
70bccea4 8773 /* fall through */
252b5132 8774
7619e7c7 8775 case R_PPC_ADDR24:
7619e7c7
AM
8776 case R_PPC_ADDR14:
8777 case R_PPC_ADDR14_BRTAKEN:
8778 case R_PPC_ADDR14_BRNTAKEN:
0e1862bb 8779 if (h != NULL && !bfd_link_pic (info))
625af618
AM
8780 break;
8781 /* fall through */
8782
7619e7c7 8783 dodyn:
3348747a
NS
8784 if ((input_section->flags & SEC_ALLOC) == 0
8785 || is_vxworks_tls)
c87b5a93 8786 break;
c87b5a93 8787
0e1862bb 8788 if ((bfd_link_pic (info)
89200bf8
AM
8789 && !(h != NULL
8790 && ((h->root.type == bfd_link_hash_undefined
8791 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8792 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8793 || (h->root.type == bfd_link_hash_undefweak
8794 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 8795 && (must_be_dyn_reloc (info, r_type)
f6c52c13 8796 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe 8797 || (ELIMINATE_COPY_RELOCS
0e1862bb 8798 && !bfd_link_pic (info)
ee05f2fe
AM
8799 && h != NULL
8800 && h->dynindx != -1
f5385ebf 8801 && !h->non_got_ref
d3e454b9
AM
8802 && !h->def_regular
8803 && !(h->protected_def
8804 && ppc_elf_hash_entry (h)->has_addr16_ha
8805 && ppc_elf_hash_entry (h)->has_addr16_lo
8806 && htab->params->pic_fixup > 0)))
252b5132 8807 {
0bb2d96a 8808 int skip;
f95f8542
AM
8809 bfd_byte *loc;
8810 asection *sreloc;
252b5132 8811#ifdef DEBUG
55fd94b0
AM
8812 fprintf (stderr, "ppc_elf_relocate_section needs to "
8813 "create relocation for %s\n",
70bccea4
AM
8814 (h && h->root.root.string
8815 ? h->root.root.string : "<unknown>"));
252b5132
RH
8816#endif
8817
8818 /* When generating a shared object, these relocations
70bccea4
AM
8819 are copied into the output file to be resolved at run
8820 time. */
f95f8542
AM
8821 sreloc = elf_section_data (input_section)->sreloc;
8822 if (ifunc)
8823 sreloc = htab->reliplt;
252b5132 8824 if (sreloc == NULL)
f95f8542 8825 return FALSE;
252b5132 8826
0bb2d96a 8827 skip = 0;
5b914448
AM
8828 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8829 input_section,
8830 rel->r_offset);
0bb2d96a
JJ
8831 if (outrel.r_offset == (bfd_vma) -1
8832 || outrel.r_offset == (bfd_vma) -2)
8833 skip = (int) outrel.r_offset;
252b5132
RH
8834 outrel.r_offset += (input_section->output_section->vma
8835 + input_section->output_offset);
8836
8837 if (skip)
8838 memset (&outrel, 0, sizeof outrel);
89200bf8
AM
8839 else if ((h != NULL
8840 && (h->root.type == bfd_link_hash_undefined
8841 || h->root.type == bfd_link_hash_undefweak))
8842 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 8843 {
14acf4dc 8844 BFD_ASSERT (h->dynindx != -1);
7619e7c7 8845 unresolved_reloc = FALSE;
252b5132
RH
8846 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8847 outrel.r_addend = rel->r_addend;
8848 }
8849 else
8850 {
47388f4c
AM
8851 outrel.r_addend = relocation + rel->r_addend;
8852
25f23106 8853 if (r_type != R_PPC_ADDR32)
252b5132 8854 {
89200bf8 8855 long indx = 0;
252b5132 8856
25f23106
AM
8857 if (ifunc != NULL)
8858 {
8859 /* If we get here when building a static
8860 executable, then the libc startup function
8861 responsible for applying indirect function
8862 relocations is going to complain about
8863 the reloc type.
8864 If we get here when building a dynamic
8865 executable, it will be because we have
8866 a text relocation. The dynamic loader
8867 will set the text segment writable and
8868 non-executable to apply text relocations.
8869 So we'll segfault when trying to run the
8870 indirection function to resolve the reloc. */
25f53a85 8871 info->callbacks->einfo
8de848d8 8872 (_("%P: %H: relocation %s for indirect "
25f53a85
AM
8873 "function %s unsupported\n"),
8874 input_bfd, input_section, rel->r_offset,
25f23106
AM
8875 howto->name,
8876 sym_name);
8877 ret = FALSE;
8878 }
cf35638d 8879 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
89200bf8 8880 ;
252b5132
RH
8881 else if (sec == NULL || sec->owner == NULL)
8882 {
8883 bfd_set_error (bfd_error_bad_value);
89200bf8 8884 ret = FALSE;
252b5132
RH
8885 }
8886 else
8887 {
8888 asection *osec;
8889
47388f4c
AM
8890 /* We are turning this relocation into one
8891 against a section symbol. It would be
8892 proper to subtract the symbol's value,
8893 osec->vma, from the emitted reloc addend,
25f23106
AM
8894 but ld.so expects buggy relocs.
8895 FIXME: Why not always use a zero index? */
252b5132
RH
8896 osec = sec->output_section;
8897 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
8898 if (indx == 0)
8899 {
8900 osec = htab->elf.text_index_section;
8901 indx = elf_section_data (osec)->dynindx;
8902 }
8903 BFD_ASSERT (indx != 0);
252b5132 8904#ifdef DEBUG
74541ad4 8905 if (indx == 0)
e460dd0d 8906 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
8907 indx, osec->name, osec->flags,
8908 h->root.root.string);
252b5132
RH
8909#endif
8910 }
8911
8912 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132 8913 }
25f23106
AM
8914 else if (ifunc != NULL)
8915 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8916 else
8917 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
8918 }
8919
947216bf
AM
8920 loc = sreloc->contents;
8921 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8922 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 8923
2243deae 8924 if (skip == -1)
c316a17c 8925 goto copy_reloc;
2243deae
L
8926
8927 /* This reloc will be computed at runtime. We clear the memory
8928 so that it contains predictable value. */
8929 if (! skip
8930 && ((input_section->flags & SEC_ALLOC) != 0
8931 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8932 {
8933 relocation = howto->pc_relative ? outrel.r_offset : 0;
8934 addend = 0;
8935 break;
8936 }
252b5132 8937 }
252b5132
RH
8938 break;
8939
32af9f6e
AM
8940 case R_PPC_RELAX_PLT:
8941 case R_PPC_RELAX_PLTREL24:
de972ffa
AM
8942 if (h != NULL)
8943 {
32af9f6e
AM
8944 struct plt_entry *ent;
8945 bfd_vma got2_addend = 0;
8946
8947 if (r_type == R_PPC_RELAX_PLTREL24)
8948 {
0e1862bb 8949 if (bfd_link_pic (info))
32af9f6e
AM
8950 got2_addend = addend;
8951 addend = 0;
8952 }
8953 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
de972ffa
AM
8954 if (htab->plt_type == PLT_NEW)
8955 relocation = (htab->glink->output_section->vma
8956 + htab->glink->output_offset
8957 + ent->glink_offset);
8958 else
8959 relocation = (htab->plt->output_section->vma
8960 + htab->plt->output_offset
8961 + ent->plt.offset);
8962 }
b4a38de6
AM
8963 /* Fall thru */
8964
32af9f6e 8965 case R_PPC_RELAX:
9abc968f 8966 {
53291d1f
AM
8967 const int *stub;
8968 size_t size;
8969 size_t insn_offset = rel->r_offset;
8970 unsigned int insn;
9abc968f 8971
0e1862bb 8972 if (bfd_link_pic (info))
53291d1f
AM
8973 {
8974 relocation -= (input_section->output_section->vma
8975 + input_section->output_offset
8976 + rel->r_offset - 4);
8977 stub = shared_stub_entry;
8978 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8979 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8980 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8981 stub += 3;
8982 size = ARRAY_SIZE (shared_stub_entry) - 3;
8983 }
8984 else
8985 {
8986 stub = stub_entry;
8987 size = ARRAY_SIZE (stub_entry);
8988 }
9abc968f 8989
9abc968f 8990 relocation += addend;
0e1862bb 8991 if (bfd_link_relocatable (info))
53291d1f
AM
8992 relocation = 0;
8993
8994 /* First insn is HA, second is LO. */
8995 insn = *stub++;
8996 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8997 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8998 insn_offset += 4;
8999
9000 insn = *stub++;
9001 insn |= relocation & 0xffff;
9002 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9003 insn_offset += 4;
9004 size -= 2;
9005
9006 while (size != 0)
9007 {
9008 insn = *stub++;
9009 --size;
9010 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9011 insn_offset += 4;
9012 }
9bc4e62b
NS
9013
9014 /* Rewrite the reloc and convert one of the trailing nop
9015 relocs to describe this relocation. */
9016 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9017 /* The relocs are at the bottom 2 bytes */
c316a17c
AM
9018 wrel->r_offset = rel->r_offset + d_offset;
9019 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9020 wrel->r_addend = rel->r_addend;
9021 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9022 wrel++, rel++;
9023 wrel->r_offset += 4;
9024 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9abc968f 9025 }
8517fae7 9026 continue;
deaaf2f3 9027
70bccea4 9028 /* Indirect .sdata relocation. */
7619e7c7 9029 case R_PPC_EMB_SDAI16:
c9a2f333 9030 BFD_ASSERT (htab->sdata[0].section != NULL);
bd6c6e2b
AM
9031 if (!is_static_defined (htab->sdata[0].sym))
9032 {
9033 unresolved_reloc = TRUE;
9034 break;
9035 }
7619e7c7 9036 relocation
76750a2f
AM
9037 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9038 h, relocation, rel);
bd6c6e2b 9039 addend = 0;
252b5132
RH
9040 break;
9041
70bccea4 9042 /* Indirect .sdata2 relocation. */
7619e7c7 9043 case R_PPC_EMB_SDA2I16:
c9a2f333 9044 BFD_ASSERT (htab->sdata[1].section != NULL);
bd6c6e2b
AM
9045 if (!is_static_defined (htab->sdata[1].sym))
9046 {
9047 unresolved_reloc = TRUE;
9048 break;
9049 }
7619e7c7 9050 relocation
76750a2f
AM
9051 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9052 h, relocation, rel);
bd6c6e2b 9053 addend = 0;
252b5132
RH
9054 break;
9055
70bccea4
AM
9056 /* Handle the TOC16 reloc. We want to use the offset within the .got
9057 section, not the actual VMA. This is appropriate when generating
9058 an embedded ELF object, for which the .got section acts like the
9059 AIX .toc section. */
7619e7c7 9060 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
9061 if (sec == NULL || sec->output_section == NULL)
9062 {
9063 unresolved_reloc = TRUE;
9064 break;
9065 }
a0f49396
NC
9066 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9067 ".got") == 0
9068 || strcmp (bfd_get_section_name (sec->owner, sec),
9069 ".cgot") == 0);
252b5132 9070
3b4f3a11 9071 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
9072 break;
9073
7619e7c7 9074 case R_PPC_PLTREL24:
f75e0e33
AM
9075 if (h != NULL && ifunc == NULL)
9076 {
cbf95972
AM
9077 struct plt_entry *ent;
9078
9079 ent = find_plt_ent (&h->plt.plist, got2,
9080 bfd_link_pic (info) ? addend : 0);
f75e0e33
AM
9081 if (ent == NULL
9082 || htab->plt == NULL)
9083 {
9084 /* We didn't make a PLT entry for this symbol. This
9085 happens when statically linking PIC code, or when
9086 using -Bsymbolic. */
9087 }
9088 else
9089 {
9090 /* Relocation is to the entry for this symbol in the
9091 procedure linkage table. */
9092 unresolved_reloc = FALSE;
9093 if (htab->plt_type == PLT_NEW)
9094 relocation = (htab->glink->output_section->vma
9095 + htab->glink->output_offset
9096 + ent->glink_offset);
9097 else
9098 relocation = (htab->plt->output_section->vma
9099 + htab->plt->output_offset
9100 + ent->plt.offset);
9101 }
9102 }
252b5132 9103
f75e0e33
AM
9104 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9105 addend specifies the GOT pointer offset within .got2.
9106 Don't apply it to the relocation field. */
9107 addend = 0;
8da6118f 9108 break;
252b5132 9109
70bccea4 9110 /* Relocate against _SDA_BASE_. */
7619e7c7 9111 case R_PPC_SDAREL16:
252b5132
RH
9112 {
9113 const char *name;
bd6c6e2b 9114 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
252b5132 9115
bd6c6e2b
AM
9116 if (sec == NULL
9117 || sec->output_section == NULL
9118 || !is_static_defined (sda))
3b4f3a11
AM
9119 {
9120 unresolved_reloc = TRUE;
9121 break;
9122 }
bd6c6e2b 9123 addend -= SYM_VAL (sda);
3b4f3a11 9124
a0f49396 9125 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9126 if (!(strcmp (name, ".sdata") == 0
9127 || strcmp (name, ".sbss") == 0))
252b5132 9128 {
25f53a85 9129 info->callbacks->einfo
8de848d8 9130 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9131 "in the wrong output section (%s)\n"),
d003868e 9132 input_bfd,
55fd94b0
AM
9133 sym_name,
9134 howto->name,
9135 name);
252b5132 9136 }
252b5132
RH
9137 }
9138 break;
9139
70bccea4 9140 /* Relocate against _SDA2_BASE_. */
7619e7c7 9141 case R_PPC_EMB_SDA2REL:
252b5132
RH
9142 {
9143 const char *name;
bd6c6e2b 9144 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
252b5132 9145
bd6c6e2b
AM
9146 if (sec == NULL
9147 || sec->output_section == NULL
9148 || !is_static_defined (sda))
3b4f3a11
AM
9149 {
9150 unresolved_reloc = TRUE;
9151 break;
9152 }
bd6c6e2b 9153 addend -= SYM_VAL (sda);
3b4f3a11 9154
a0f49396 9155 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9156 if (!(strcmp (name, ".sdata2") == 0
9157 || strcmp (name, ".sbss2") == 0))
252b5132 9158 {
25f53a85 9159 info->callbacks->einfo
8de848d8 9160 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9161 "in the wrong output section (%s)\n"),
d003868e 9162 input_bfd,
55fd94b0
AM
9163 sym_name,
9164 howto->name,
9165 name);
252b5132 9166 }
252b5132
RH
9167 }
9168 break;
9169
b9c361e0 9170 case R_PPC_VLE_LO16A:
86c95733
AM
9171 relocation = relocation + addend;
9172 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9173 relocation, split16a_type);
c316a17c 9174 goto copy_reloc;
b9c361e0
JL
9175
9176 case R_PPC_VLE_LO16D:
86c95733
AM
9177 relocation = relocation + addend;
9178 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9179 relocation, split16d_type);
c316a17c 9180 goto copy_reloc;
b9c361e0
JL
9181
9182 case R_PPC_VLE_HI16A:
86c95733
AM
9183 relocation = (relocation + addend) >> 16;
9184 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9185 relocation, split16a_type);
c316a17c 9186 goto copy_reloc;
b9c361e0
JL
9187
9188 case R_PPC_VLE_HI16D:
86c95733
AM
9189 relocation = (relocation + addend) >> 16;
9190 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9191 relocation, split16d_type);
c316a17c 9192 goto copy_reloc;
b9c361e0
JL
9193
9194 case R_PPC_VLE_HA16A:
86c95733
AM
9195 relocation = (relocation + addend + 0x8000) >> 16;
9196 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9197 relocation, split16a_type);
c316a17c 9198 goto copy_reloc;
b9c361e0
JL
9199
9200 case R_PPC_VLE_HA16D:
86c95733
AM
9201 relocation = (relocation + addend + 0x8000) >> 16;
9202 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9203 relocation, split16d_type);
c316a17c 9204 goto copy_reloc;
b9c361e0 9205
70bccea4 9206 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7 9207 case R_PPC_EMB_SDA21:
b9c361e0 9208 case R_PPC_VLE_SDA21:
7619e7c7 9209 case R_PPC_EMB_RELSDA:
b9c361e0 9210 case R_PPC_VLE_SDA21_LO:
252b5132
RH
9211 {
9212 const char *name;
9213 int reg;
86c95733 9214 unsigned int insn;
bd6c6e2b 9215 struct elf_link_hash_entry *sda = NULL;
252b5132 9216
3b4f3a11
AM
9217 if (sec == NULL || sec->output_section == NULL)
9218 {
9219 unresolved_reloc = TRUE;
9220 break;
9221 }
9222
a0f49396 9223 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9224 if (strcmp (name, ".sdata") == 0
9225 || strcmp (name, ".sbss") == 0)
252b5132
RH
9226 {
9227 reg = 13;
bd6c6e2b 9228 sda = htab->sdata[0].sym;
252b5132 9229 }
93d1b056
AM
9230 else if (strcmp (name, ".sdata2") == 0
9231 || strcmp (name, ".sbss2") == 0)
252b5132
RH
9232 {
9233 reg = 2;
bd6c6e2b 9234 sda = htab->sdata[1].sym;
252b5132 9235 }
8da6118f
KH
9236 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9237 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
9238 {
9239 reg = 0;
9240 }
252b5132
RH
9241 else
9242 {
25f53a85 9243 info->callbacks->einfo
8de848d8 9244 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9245 "in the wrong output section (%s)\n"),
d003868e 9246 input_bfd,
55fd94b0
AM
9247 sym_name,
9248 howto->name,
9249 name);
252b5132
RH
9250
9251 bfd_set_error (bfd_error_bad_value);
b34976b6 9252 ret = FALSE;
c316a17c 9253 goto copy_reloc;
252b5132
RH
9254 }
9255
bd6c6e2b
AM
9256 if (sda != NULL)
9257 {
9258 if (!is_static_defined (sda))
9259 {
9260 unresolved_reloc = TRUE;
9261 break;
9262 }
9263 addend -= SYM_VAL (sda);
9264 }
9265
86c95733 9266 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
b9c361e0
JL
9267 if (reg == 0
9268 && (r_type == R_PPC_VLE_SDA21
9269 || r_type == R_PPC_VLE_SDA21_LO))
9270 {
86c95733
AM
9271 relocation = relocation + addend;
9272 addend = 0;
9273
9274 /* Force e_li insn, keeping RT from original insn. */
9275 insn &= 0x1f << 21;
9276 insn |= 28u << 26;
9277
9278 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9279 /* Top 4 bits of value to 17..20. */
9280 insn |= (relocation & 0xf0000) >> 5;
9281 /* Next 5 bits of the value to 11..15. */
9282 insn |= (relocation & 0xf800) << 5;
9283 /* And the final 11 bits of the value to bits 21 to 31. */
9284 insn |= relocation & 0x7ff;
9285
c3301df1
AM
9286 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9287
9288 if (r_type == R_PPC_VLE_SDA21
9289 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9290 goto overflow;
c316a17c 9291 goto copy_reloc;
b9c361e0
JL
9292 }
9293 else if (r_type == R_PPC_EMB_SDA21
9294 || r_type == R_PPC_VLE_SDA21
9295 || r_type == R_PPC_VLE_SDA21_LO)
91d6fa6a 9296 {
86c95733 9297 /* Fill in register field. */
252b5132 9298 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
252b5132 9299 }
86c95733 9300 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
9301 }
9302 break;
9303
b9c361e0
JL
9304 case R_PPC_VLE_SDAREL_LO16A:
9305 case R_PPC_VLE_SDAREL_LO16D:
9306 case R_PPC_VLE_SDAREL_HI16A:
9307 case R_PPC_VLE_SDAREL_HI16D:
9308 case R_PPC_VLE_SDAREL_HA16A:
9309 case R_PPC_VLE_SDAREL_HA16D:
9310 {
9311 bfd_vma value;
9312 const char *name;
9313 //int reg;
9314 struct elf_link_hash_entry *sda = NULL;
9315
9316 if (sec == NULL || sec->output_section == NULL)
9317 {
9318 unresolved_reloc = TRUE;
9319 break;
9320 }
9321
a0f49396 9322 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9323 if (strcmp (name, ".sdata") == 0
9324 || strcmp (name, ".sbss") == 0)
b9c361e0
JL
9325 {
9326 //reg = 13;
9327 sda = htab->sdata[0].sym;
9328 }
93d1b056
AM
9329 else if (strcmp (name, ".sdata2") == 0
9330 || strcmp (name, ".sbss2") == 0)
b9c361e0
JL
9331 {
9332 //reg = 2;
9333 sda = htab->sdata[1].sym;
9334 }
9335 else
9336 {
9337 (*_bfd_error_handler)
9338 (_("%B: the target (%s) of a %s relocation is "
9339 "in the wrong output section (%s)"),
9340 input_bfd,
9341 sym_name,
9342 howto->name,
9343 name);
9344
9345 bfd_set_error (bfd_error_bad_value);
9346 ret = FALSE;
c316a17c 9347 goto copy_reloc;
b9c361e0
JL
9348 }
9349
9350 if (sda != NULL)
9351 {
9352 if (!is_static_defined (sda))
9353 {
9354 unresolved_reloc = TRUE;
9355 break;
9356 }
9357 }
9358
86c95733
AM
9359 value = (sda->root.u.def.section->output_section->vma
9360 + sda->root.u.def.section->output_offset
9361 + addend);
9362
9363 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9364 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9365 value, split16a_type);
9366 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9367 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9368 value, split16d_type);
9369 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
b9c361e0 9370 {
86c95733
AM
9371 value = value >> 16;
9372 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9373 value, split16a_type);
b9c361e0 9374 }
86c95733 9375 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
b9c361e0 9376 {
86c95733
AM
9377 value = value >> 16;
9378 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9379 value, split16d_type);
b9c361e0 9380 }
86c95733 9381 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
b9c361e0 9382 {
86c95733
AM
9383 value = (value + 0x8000) >> 16;
9384 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9385 value, split16a_type);
b9c361e0 9386 }
86c95733 9387 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
b9c361e0 9388 {
86c95733
AM
9389 value = (value + 0x8000) >> 16;
9390 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9391 value, split16d_type);
b9c361e0
JL
9392 }
9393 }
c316a17c 9394 goto copy_reloc;
b9c361e0 9395
70bccea4 9396 /* Relocate against the beginning of the section. */
7619e7c7
AM
9397 case R_PPC_SECTOFF:
9398 case R_PPC_SECTOFF_LO:
9399 case R_PPC_SECTOFF_HI:
9400 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
9401 if (sec == NULL || sec->output_section == NULL)
9402 {
9403 unresolved_reloc = TRUE;
9404 break;
9405 }
252b5132 9406 addend -= sec->output_section->vma;
252b5132
RH
9407 break;
9408
70bccea4 9409 /* Negative relocations. */
7619e7c7
AM
9410 case R_PPC_EMB_NADDR32:
9411 case R_PPC_EMB_NADDR16:
9412 case R_PPC_EMB_NADDR16_LO:
9413 case R_PPC_EMB_NADDR16_HI:
9414 case R_PPC_EMB_NADDR16_HA:
8da6118f 9415 addend -= 2 * relocation;
252b5132
RH
9416 break;
9417
7619e7c7
AM
9418 case R_PPC_COPY:
9419 case R_PPC_GLOB_DAT:
9420 case R_PPC_JMP_SLOT:
9421 case R_PPC_RELATIVE:
e054468f 9422 case R_PPC_IRELATIVE:
7619e7c7
AM
9423 case R_PPC_PLT32:
9424 case R_PPC_PLTREL32:
9425 case R_PPC_PLT16_LO:
9426 case R_PPC_PLT16_HI:
9427 case R_PPC_PLT16_HA:
9428 case R_PPC_ADDR30:
9429 case R_PPC_EMB_RELSEC16:
9430 case R_PPC_EMB_RELST_LO:
9431 case R_PPC_EMB_RELST_HI:
9432 case R_PPC_EMB_RELST_HA:
9433 case R_PPC_EMB_BIT_FLD:
25f53a85 9434 info->callbacks->einfo
8de848d8 9435 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
d003868e 9436 input_bfd,
7619e7c7
AM
9437 howto->name,
9438 sym_name);
252b5132
RH
9439
9440 bfd_set_error (bfd_error_invalid_operation);
b34976b6 9441 ret = FALSE;
c316a17c 9442 goto copy_reloc;
7619e7c7 9443 }
252b5132 9444
7619e7c7
AM
9445 /* Do any further special processing. */
9446 switch (r_type)
9447 {
9448 default:
9449 break;
9450
9451 case R_PPC_ADDR16_HA:
d7128ce4 9452 case R_PPC_REL16_HA:
a680de9a 9453 case R_PPC_REL16DX_HA:
7619e7c7
AM
9454 case R_PPC_SECTOFF_HA:
9455 case R_PPC_TPREL16_HA:
9456 case R_PPC_DTPREL16_HA:
7619e7c7
AM
9457 case R_PPC_EMB_NADDR16_HA:
9458 case R_PPC_EMB_RELST_HA:
9459 /* It's just possible that this symbol is a weak symbol
7b609f53 9460 that's not actually defined anywhere. In that case,
7619e7c7
AM
9461 'sec' would be NULL, and we should leave the symbol
9462 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
9463 if (sec == NULL)
9464 break;
9465 /* Fall thru */
9466
9467 case R_PPC_PLT16_HA:
9468 case R_PPC_GOT16_HA:
9469 case R_PPC_GOT_TLSGD16_HA:
9470 case R_PPC_GOT_TLSLD16_HA:
9471 case R_PPC_GOT_TPREL16_HA:
9472 case R_PPC_GOT_DTPREL16_HA:
9473 /* Add 0x10000 if sign bit in 0:15 is set.
9474 Bits 0:15 are not used. */
9475 addend += 0x8000;
7619e7c7 9476 break;
1fe532cf
AM
9477
9478 case R_PPC_ADDR16:
9479 case R_PPC_ADDR16_LO:
9480 case R_PPC_GOT16:
9481 case R_PPC_GOT16_LO:
9482 case R_PPC_SDAREL16:
9483 case R_PPC_SECTOFF:
9484 case R_PPC_SECTOFF_LO:
9485 case R_PPC_DTPREL16:
9486 case R_PPC_DTPREL16_LO:
9487 case R_PPC_TPREL16:
9488 case R_PPC_TPREL16_LO:
9489 case R_PPC_GOT_TLSGD16:
9490 case R_PPC_GOT_TLSGD16_LO:
9491 case R_PPC_GOT_TLSLD16:
9492 case R_PPC_GOT_TLSLD16_LO:
9493 case R_PPC_GOT_DTPREL16:
9494 case R_PPC_GOT_DTPREL16_LO:
9495 case R_PPC_GOT_TPREL16:
9496 case R_PPC_GOT_TPREL16_LO:
9497 {
9498 /* The 32-bit ABI lacks proper relocations to deal with
9499 certain 64-bit instructions. Prevent damage to bits
9500 that make up part of the insn opcode. */
9501 unsigned int insn, mask, lobit;
9502
c316a17c
AM
9503 insn = bfd_get_32 (output_bfd,
9504 contents + rel->r_offset - d_offset);
1fe532cf
AM
9505 mask = 0;
9506 if (is_insn_ds_form (insn))
9507 mask = 3;
9508 else if (is_insn_dq_form (insn))
9509 mask = 15;
9510 else
9511 break;
a680de9a
PB
9512 relocation += addend;
9513 addend = insn & mask;
9514 lobit = mask & relocation;
1fe532cf
AM
9515 if (lobit != 0)
9516 {
a680de9a 9517 relocation ^= lobit;
1fe532cf
AM
9518 info->callbacks->einfo
9519 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9520 input_bfd, input_section, rel->r_offset,
9521 howto->name, sym_name, mask + 1);
9522 bfd_set_error (bfd_error_bad_value);
9523 ret = FALSE;
9524 }
1fe532cf
AM
9525 }
9526 break;
252b5132
RH
9527 }
9528
252b5132 9529#ifdef DEBUG
55fd94b0
AM
9530 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9531 "offset = %ld, addend = %ld\n",
252b5132 9532 howto->name,
8da6118f 9533 (int) r_type,
252b5132
RH
9534 sym_name,
9535 r_symndx,
7619e7c7 9536 (long) rel->r_offset,
8da6118f 9537 (long) addend);
252b5132
RH
9538#endif
9539
7619e7c7
AM
9540 if (unresolved_reloc
9541 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
9542 && h->def_dynamic)
9543 && _bfd_elf_section_offset (output_bfd, info, input_section,
9544 rel->r_offset) != (bfd_vma) -1)
7619e7c7 9545 {
25f53a85 9546 info->callbacks->einfo
8de848d8 9547 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
25f53a85 9548 input_bfd, input_section, rel->r_offset,
7b609f53 9549 howto->name,
7619e7c7
AM
9550 sym_name);
9551 ret = FALSE;
9552 }
9553
86c95733
AM
9554 /* 16-bit fields in insns mostly have signed values, but a
9555 few insns have 16-bit unsigned values. Really, we should
9556 have different reloc types. */
9557 if (howto->complain_on_overflow != complain_overflow_dont
9558 && howto->dst_mask == 0xffff
9559 && (input_section->flags & SEC_CODE) != 0)
9560 {
9561 enum complain_overflow complain = complain_overflow_signed;
9562
9563 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9564 {
9565 unsigned int insn;
9566
9567 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM
9568 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9569 complain = complain_overflow_bitfield;
9570 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9571 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9572 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
86c95733
AM
9573 complain = complain_overflow_unsigned;
9574 }
9575 if (howto->complain_on_overflow != complain)
9576 {
9577 alt_howto = *howto;
9578 alt_howto.complain_on_overflow = complain;
9579 howto = &alt_howto;
9580 }
9581 }
9582
a680de9a
PB
9583 if (r_type == R_PPC_REL16DX_HA)
9584 {
9585 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9586 if (rel->r_offset + 4 > input_section->size)
9587 r = bfd_reloc_outofrange;
9588 else
9589 {
9590 unsigned int insn;
9591
9592 relocation += addend;
9593 relocation -= (rel->r_offset
9594 + input_section->output_offset
9595 + input_section->output_section->vma);
9596 relocation >>= 16;
9597 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9598 insn &= ~0x1fffc1;
9599 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9600 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9601 r = bfd_reloc_ok;
9602 }
9603 }
9604 else
9605 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9606 rel->r_offset, relocation, addend);
252b5132 9607
7619e7c7 9608 if (r != bfd_reloc_ok)
252b5132 9609 {
7619e7c7 9610 if (r == bfd_reloc_overflow)
252b5132 9611 {
c3301df1 9612 overflow:
8131c122
AM
9613 /* On code like "if (foo) foo();" don't report overflow
9614 on a branch to zero when foo is undefined. */
9615 if (!warned
9616 && !(h != NULL
9617 && (h->root.type == bfd_link_hash_undefweak
9618 || h->root.type == bfd_link_hash_undefined)
9619 && is_branch_reloc (r_type)))
1a72702b
AM
9620 info->callbacks->reloc_overflow
9621 (info, (h ? &h->root : NULL), sym_name, howto->name,
9622 rel->r_addend, input_bfd, input_section, rel->r_offset);
dc1bc0c9
RH
9623 }
9624 else
9625 {
25f53a85 9626 info->callbacks->einfo
8de848d8 9627 (_("%P: %H: %s reloc against `%s': error %d\n"),
25f53a85
AM
9628 input_bfd, input_section, rel->r_offset,
9629 howto->name, sym_name, (int) r);
7619e7c7 9630 ret = FALSE;
252b5132
RH
9631 }
9632 }
c316a17c
AM
9633 copy_reloc:
9634 if (wrel != rel)
9635 *wrel = *rel;
9636 }
9637
9638 if (wrel != rel)
9639 {
9640 Elf_Internal_Shdr *rel_hdr;
9641 size_t deleted = rel - wrel;
9642
9643 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9644 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9645 if (rel_hdr->sh_size == 0)
9646 {
9647 /* It is too late to remove an empty reloc section. Leave
9648 one NONE reloc.
9649 ??? What is wrong with an empty section??? */
9650 rel_hdr->sh_size = rel_hdr->sh_entsize;
9651 deleted -= 1;
9652 wrel++;
9653 }
9654 relend = wrel;
9655 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9656 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9657 input_section->reloc_count -= deleted;
252b5132
RH
9658 }
9659
252b5132
RH
9660#ifdef DEBUG
9661 fprintf (stderr, "\n");
9662#endif
9663
53291d1f
AM
9664 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9665 && input_section->size != input_section->rawsize
9666 && (strcmp (input_section->output_section->name, ".init") == 0
9667 || strcmp (input_section->output_section->name, ".fini") == 0))
9668 {
9669 /* Branch around the trampolines. */
9670 unsigned int insn = B + input_section->size - input_section->rawsize;
9671 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9672 }
9673
5446cbdf 9674 if (htab->params->ppc476_workaround
795bc6b3 9675 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
0e1862bb 9676 && (!bfd_link_relocatable (info)
795bc6b3
AM
9677 || (input_section->output_section->alignment_power
9678 >= htab->params->pagesize_p2)))
5446cbdf 9679 {
5446cbdf 9680 bfd_vma start_addr, end_addr, addr;
795bc6b3 9681 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf 9682
5446cbdf 9683 if (relax_info->workaround_size != 0)
40fd06d1
AM
9684 {
9685 bfd_byte *p;
9686 unsigned int n;
9687 bfd_byte fill[4];
9688
9689 bfd_put_32 (input_bfd, BA, fill);
9690 p = contents + input_section->size - relax_info->workaround_size;
9691 n = relax_info->workaround_size >> 2;
9692 while (n--)
9693 {
9694 memcpy (p, fill, 4);
9695 p += 4;
9696 }
9697 }
5446cbdf
AM
9698
9699 /* The idea is: Replace the last instruction on a page with a
9700 branch to a patch area. Put the insn there followed by a
9701 branch back to the next page. Complicated a little by
9702 needing to handle moved conditional branches, and by not
9703 wanting to touch data-in-text. */
9704
9705 start_addr = (input_section->output_section->vma
9706 + input_section->output_offset);
9707 end_addr = (start_addr + input_section->size
9708 - relax_info->workaround_size);
9709 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9710 addr < end_addr;
9711 addr += pagesize)
9712 {
9713 bfd_vma offset = addr - start_addr;
9714 Elf_Internal_Rela *lo, *hi;
9715 bfd_boolean is_data;
9716 bfd_vma patch_off, patch_addr;
9717 unsigned int insn;
9718
9719 /* Do we have a data reloc at this offset? If so, leave
9720 the word alone. */
9721 is_data = FALSE;
9722 lo = relocs;
668e22e5
AM
9723 hi = relend;
9724 rel = NULL;
5446cbdf
AM
9725 while (lo < hi)
9726 {
9727 rel = lo + (hi - lo) / 2;
9728 if (rel->r_offset < offset)
9729 lo = rel + 1;
668e22e5 9730 else if (rel->r_offset > offset + 3)
5446cbdf
AM
9731 hi = rel;
9732 else
9733 {
9734 switch (ELF32_R_TYPE (rel->r_info))
9735 {
9736 case R_PPC_ADDR32:
9737 case R_PPC_UADDR32:
9738 case R_PPC_REL32:
9739 case R_PPC_ADDR30:
9740 is_data = TRUE;
9741 break;
9742 default:
9743 break;
9744 }
9745 break;
9746 }
9747 }
9748 if (is_data)
9749 continue;
9750
b4ab4364
AM
9751 /* Some instructions can be left alone too. Unconditional
9752 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9753 avoid the icache failure.
9754
9755 The problem occurs due to prefetch across a page boundary
9756 where stale instructions can be fetched from the next
9757 page, and the mechanism for flushing these bad
9758 instructions fails under certain circumstances. The
9759 unconditional branches:
9760 1) Branch: b, bl, ba, bla,
9761 2) Branch Conditional: bc, bca, bcl, bcla,
9762 3) Branch Conditional to Link Register: bclr, bclrl,
9763 where (2) and (3) have BO=0x14 making them unconditional,
9764 prevent the bad prefetch because the prefetch itself is
9765 affected by these instructions. This happens even if the
9766 instruction is not executed.
9767
9768 A bctr example:
9769 .
9770 . lis 9,new_page@ha
9771 . addi 9,9,new_page@l
9772 . mtctr 9
9773 . bctr
9774 . nop
9775 . nop
9776 . new_page:
9777 .
9778 The bctr is not predicted taken due to ctr not being
9779 ready, so prefetch continues on past the bctr into the
9780 new page which might have stale instructions. If they
9781 fail to be flushed, then they will be executed after the
9782 bctr executes. Either of the following modifications
9783 prevent the bad prefetch from happening in the first
9784 place:
9785 .
1b786873
L
9786 . lis 9,new_page@ha lis 9,new_page@ha
9787 . addi 9,9,new_page@l addi 9,9,new_page@l
9788 . mtctr 9 mtctr 9
9789 . bctr bctr
b4ab4364 9790 . nop b somewhere_else
1b786873
L
9791 . b somewhere_else nop
9792 . new_page: new_page:
b4ab4364 9793 . */
5446cbdf 9794 insn = bfd_get_32 (input_bfd, contents + offset);
b4ab4364
AM
9795 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9796 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9797 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
5446cbdf 9798 || ((insn & (0x3f << 26)) == (19u << 26)
b4ab4364
AM
9799 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9800 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
5446cbdf
AM
9801 continue;
9802
9803 patch_addr = (start_addr + input_section->size
9804 - relax_info->workaround_size);
9805 patch_addr = (patch_addr + 15) & -16;
9806 patch_off = patch_addr - start_addr;
9807 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
668e22e5
AM
9808
9809 if (rel != NULL
9810 && rel->r_offset >= offset
9811 && rel->r_offset < offset + 4)
9812 {
f8b44781
AM
9813 asection *sreloc;
9814
668e22e5
AM
9815 /* If the insn we are patching had a reloc, adjust the
9816 reloc r_offset so that the reloc applies to the moved
9817 location. This matters for -r and --emit-relocs. */
9818 if (rel + 1 != relend)
9819 {
9820 Elf_Internal_Rela tmp = *rel;
9821
9822 /* Keep the relocs sorted by r_offset. */
9823 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9824 relend[-1] = tmp;
9825 }
9826 relend[-1].r_offset += patch_off - offset;
f8b44781
AM
9827
9828 /* Adjust REL16 addends too. */
9829 switch (ELF32_R_TYPE (relend[-1].r_info))
9830 {
9831 case R_PPC_REL16:
9832 case R_PPC_REL16_LO:
9833 case R_PPC_REL16_HI:
9834 case R_PPC_REL16_HA:
9835 relend[-1].r_addend += patch_off - offset;
9836 break;
9837 default:
9838 break;
9839 }
9840
9841 /* If we are building a PIE or shared library with
9842 non-PIC objects, perhaps we had a dynamic reloc too?
9843 If so, the dynamic reloc must move with the insn. */
9844 sreloc = elf_section_data (input_section)->sreloc;
9845 if (sreloc != NULL)
9846 {
1d5c94cb 9847 Elf32_External_Rela *slo, *shi, *srelend;
f8b44781
AM
9848 bfd_vma soffset;
9849
1d5c94cb
AM
9850 slo = (Elf32_External_Rela *) sreloc->contents;
9851 shi = srelend = slo + sreloc->reloc_count;
f8b44781
AM
9852 soffset = (offset + input_section->output_section->vma
9853 + input_section->output_offset);
9854 while (slo < shi)
9855 {
1d5c94cb
AM
9856 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9857 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9858 &outrel);
f8b44781
AM
9859 if (outrel.r_offset < soffset)
9860 slo = srel + 1;
9861 else if (outrel.r_offset > soffset + 3)
9862 shi = srel;
9863 else
9864 {
1d5c94cb 9865 if (srel + 1 != srelend)
f8b44781 9866 {
1d5c94cb
AM
9867 memmove (srel, srel + 1,
9868 (srelend - (srel + 1)) * sizeof (*srel));
9869 srel = srelend - 1;
f8b44781
AM
9870 }
9871 outrel.r_offset += patch_off - offset;
1d5c94cb
AM
9872 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9873 (bfd_byte *) srel);
f8b44781
AM
9874 break;
9875 }
9876 }
9877 }
668e22e5
AM
9878 }
9879 else
9880 rel = NULL;
9881
5446cbdf
AM
9882 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9883 && (insn & 2) == 0 /* relative */)
9884 {
9885 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9886
9887 delta += offset - patch_off;
0e1862bb 9888 if (bfd_link_relocatable (info) && rel != NULL)
668e22e5 9889 delta = 0;
0e1862bb 9890 if (!bfd_link_relocatable (info) && rel != NULL)
668e22e5
AM
9891 {
9892 enum elf_ppc_reloc_type r_type;
9893
9894 r_type = ELF32_R_TYPE (relend[-1].r_info);
9895 if (r_type == R_PPC_REL14_BRTAKEN)
9896 insn |= BRANCH_PREDICT_BIT;
9897 else if (r_type == R_PPC_REL14_BRNTAKEN)
9898 insn &= ~BRANCH_PREDICT_BIT;
9899 else
9900 BFD_ASSERT (r_type == R_PPC_REL14);
9901
9902 if ((r_type == R_PPC_REL14_BRTAKEN
9903 || r_type == R_PPC_REL14_BRNTAKEN)
9904 && delta + 0x8000 < 0x10000
9905 && (bfd_signed_vma) delta < 0)
9906 insn ^= BRANCH_PREDICT_BIT;
9907 }
5446cbdf
AM
9908 if (delta + 0x8000 < 0x10000)
9909 {
9910 bfd_put_32 (input_bfd,
9911 (insn & ~0xfffc) | (delta & 0xfffc),
9912 contents + patch_off);
9913 patch_off += 4;
9914 bfd_put_32 (input_bfd,
9915 B | ((offset + 4 - patch_off) & 0x3fffffc),
9916 contents + patch_off);
9917 patch_off += 4;
9918 }
9919 else
9920 {
668e22e5
AM
9921 if (rel != NULL)
9922 {
9923 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9924
9925 relend[-1].r_offset += 8;
9926 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9927 }
5446cbdf
AM
9928 bfd_put_32 (input_bfd,
9929 (insn & ~0xfffc) | 8,
9930 contents + patch_off);
9931 patch_off += 4;
9932 bfd_put_32 (input_bfd,
9933 B | ((offset + 4 - patch_off) & 0x3fffffc),
9934 contents + patch_off);
9935 patch_off += 4;
9936 bfd_put_32 (input_bfd,
9937 B | ((delta - 8) & 0x3fffffc),
9938 contents + patch_off);
9939 patch_off += 4;
9940 }
9941 }
9942 else
9943 {
9944 bfd_put_32 (input_bfd, insn, contents + patch_off);
9945 patch_off += 4;
9946 bfd_put_32 (input_bfd,
9947 B | ((offset + 4 - patch_off) & 0x3fffffc),
9948 contents + patch_off);
9949 patch_off += 4;
9950 }
9951 BFD_ASSERT (patch_off <= input_section->size);
9952 relax_info->workaround_size = input_section->size - patch_off;
9953 }
9954 }
9955
252b5132
RH
9956 return ret;
9957}
252b5132 9958\f
25dbc73a
AM
9959/* Finish up dynamic symbol handling. We set the contents of various
9960 dynamic sections here. */
c5fccbec 9961
b34976b6 9962static bfd_boolean
25dbc73a
AM
9963ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9964 struct bfd_link_info *info,
9965 struct elf_link_hash_entry *h,
9966 Elf_Internal_Sym *sym)
e1a9cb8e 9967{
25dbc73a 9968 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
9969 struct plt_entry *ent;
9970 bfd_boolean doneone;
e1a9cb8e 9971
25dbc73a
AM
9972#ifdef DEBUG
9973 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9974 h->root.root.string);
9975#endif
e1a9cb8e 9976
25dbc73a
AM
9977 htab = ppc_elf_hash_table (info);
9978 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 9979
a6aa5195
AM
9980 doneone = FALSE;
9981 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9982 if (ent->plt.offset != (bfd_vma) -1)
9983 {
9984 if (!doneone)
9985 {
9986 Elf_Internal_Rela rela;
9987 bfd_byte *loc;
9988 bfd_vma reloc_index;
e1a9cb8e 9989
e054468f 9990 if (htab->plt_type == PLT_NEW
25f23106
AM
9991 || !htab->elf.dynamic_sections_created
9992 || h->dynindx == -1)
9d8504b1
PB
9993 reloc_index = ent->plt.offset / 4;
9994 else
9995 {
9996 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9997 / htab->plt_slot_size);
9998 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 9999 && htab->plt_type == PLT_OLD)
9d8504b1
PB
10000 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10001 }
10002
a6aa5195
AM
10003 /* This symbol has an entry in the procedure linkage table.
10004 Set it up. */
e054468f 10005 if (htab->plt_type == PLT_VXWORKS
25f23106
AM
10006 && htab->elf.dynamic_sections_created
10007 && h->dynindx != -1)
a6aa5195 10008 {
9d8504b1
PB
10009 bfd_vma got_offset;
10010 const bfd_vma *plt_entry;
5b914448 10011
9d8504b1
PB
10012 /* The first three entries in .got.plt are reserved. */
10013 got_offset = (reloc_index + 3) * 4;
10014
10015 /* Use the right PLT. */
0e1862bb 10016 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9d8504b1
PB
10017 : ppc_elf_vxworks_plt_entry;
10018
10019 /* Fill in the .plt on VxWorks. */
0e1862bb 10020 if (bfd_link_pic (info))
9d8504b1 10021 {
9d8504b1 10022 bfd_put_32 (output_bfd,
e87d4038 10023 plt_entry[0] | PPC_HA (got_offset),
9d8504b1
PB
10024 htab->plt->contents + ent->plt.offset + 0);
10025 bfd_put_32 (output_bfd,
e87d4038 10026 plt_entry[1] | PPC_LO (got_offset),
9d8504b1
PB
10027 htab->plt->contents + ent->plt.offset + 4);
10028 }
10029 else
10030 {
e87d4038 10031 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
10032
10033 bfd_put_32 (output_bfd,
e87d4038 10034 plt_entry[0] | PPC_HA (got_loc),
9d8504b1
PB
10035 htab->plt->contents + ent->plt.offset + 0);
10036 bfd_put_32 (output_bfd,
e87d4038 10037 plt_entry[1] | PPC_LO (got_loc),
9d8504b1
PB
10038 htab->plt->contents + ent->plt.offset + 4);
10039 }
10040
10041 bfd_put_32 (output_bfd, plt_entry[2],
10042 htab->plt->contents + ent->plt.offset + 8);
10043 bfd_put_32 (output_bfd, plt_entry[3],
10044 htab->plt->contents + ent->plt.offset + 12);
10045
10046 /* This instruction is an immediate load. The value loaded is
10047 the byte offset of the R_PPC_JMP_SLOT relocation from the
10048 start of the .rela.plt section. The value is stored in the
10049 low-order 16 bits of the load instruction. */
10050 /* NOTE: It appears that this is now an index rather than a
10051 prescaled offset. */
5b914448 10052 bfd_put_32 (output_bfd,
9d8504b1
PB
10053 plt_entry[4] | reloc_index,
10054 htab->plt->contents + ent->plt.offset + 16);
10055 /* This instruction is a PC-relative branch whose target is
10056 the start of the PLT section. The address of this branch
10057 instruction is 20 bytes beyond the start of this PLT entry.
10058 The address is encoded in bits 6-29, inclusive. The value
10059 stored is right-shifted by two bits, permitting a 26-bit
10060 offset. */
5b914448
AM
10061 bfd_put_32 (output_bfd,
10062 (plt_entry[5]
9d8504b1
PB
10063 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10064 htab->plt->contents + ent->plt.offset + 20);
10065 bfd_put_32 (output_bfd, plt_entry[6],
10066 htab->plt->contents + ent->plt.offset + 24);
10067 bfd_put_32 (output_bfd, plt_entry[7],
10068 htab->plt->contents + ent->plt.offset + 28);
10069
10070 /* Fill in the GOT entry corresponding to this PLT slot with
a8685210 10071 the address immediately after the "bctr" instruction
9d8504b1
PB
10072 in this PLT entry. */
10073 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
10074 + htab->plt->output_offset
10075 + ent->plt.offset + 16),
10076 htab->sgotplt->contents + got_offset);
10077
0e1862bb 10078 if (!bfd_link_pic (info))
9d8504b1
PB
10079 {
10080 /* Fill in a couple of entries in .rela.plt.unloaded. */
10081 loc = htab->srelplt2->contents
10082 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10083 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10084 * sizeof (Elf32_External_Rela));
10085
10086 /* Provide the @ha relocation for the first instruction. */
10087 rela.r_offset = (htab->plt->output_section->vma
10088 + htab->plt->output_offset
10089 + ent->plt.offset + 2);
636ce3f5 10090 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
10091 R_PPC_ADDR16_HA);
10092 rela.r_addend = got_offset;
10093 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10094 loc += sizeof (Elf32_External_Rela);
10095
10096 /* Provide the @l relocation for the second instruction. */
10097 rela.r_offset = (htab->plt->output_section->vma
10098 + htab->plt->output_offset
10099 + ent->plt.offset + 6);
636ce3f5 10100 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
10101 R_PPC_ADDR16_LO);
10102 rela.r_addend = got_offset;
10103 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10104 loc += sizeof (Elf32_External_Rela);
10105
10106 /* Provide a relocation for the GOT entry corresponding to this
10107 PLT slot. Point it at the middle of the .plt entry. */
10108 rela.r_offset = (htab->sgotplt->output_section->vma
10109 + htab->sgotplt->output_offset
10110 + got_offset);
7325306f 10111 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
10112 R_PPC_ADDR32);
10113 rela.r_addend = ent->plt.offset + 16;
10114 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10115 }
10116
10117 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10118 In particular, the offset for the relocation is not the
10119 address of the PLT entry for this function, as specified
10120 by the ABI. Instead, the offset is set to the address of
10121 the GOT slot for this function. See EABI 4.4.4.1. */
10122 rela.r_offset = (htab->sgotplt->output_section->vma
10123 + htab->sgotplt->output_offset
10124 + got_offset);
10125
a6aa5195
AM
10126 }
10127 else
10128 {
e054468f 10129 asection *splt = htab->plt;
25f23106
AM
10130 if (!htab->elf.dynamic_sections_created
10131 || h->dynindx == -1)
e054468f
AM
10132 splt = htab->iplt;
10133
10134 rela.r_offset = (splt->output_section->vma
10135 + splt->output_offset
9d8504b1 10136 + ent->plt.offset);
e054468f 10137 if (htab->plt_type == PLT_OLD
25f23106
AM
10138 || !htab->elf.dynamic_sections_created
10139 || h->dynindx == -1)
9d8504b1
PB
10140 {
10141 /* We don't need to fill in the .plt. The ppc dynamic
10142 linker will fill it in. */
10143 }
10144 else
10145 {
10146 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10147 + htab->glink->output_section->vma
10148 + htab->glink->output_offset);
10149 bfd_put_32 (output_bfd, val,
e054468f 10150 splt->contents + ent->plt.offset);
9d8504b1 10151 }
a6aa5195 10152 }
e1a9cb8e 10153
a6aa5195 10154 /* Fill in the entry in the .rela.plt section. */
a6aa5195 10155 rela.r_addend = 0;
e054468f
AM
10156 if (!htab->elf.dynamic_sections_created
10157 || h->dynindx == -1)
10158 {
10159 BFD_ASSERT (h->type == STT_GNU_IFUNC
10160 && h->def_regular
10161 && (h->root.type == bfd_link_hash_defined
10162 || h->root.type == bfd_link_hash_defweak));
10163 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10164 rela.r_addend = SYM_VAL (h);
10165 }
10166 else
10167 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
e1a9cb8e 10168
25f23106
AM
10169 if (!htab->elf.dynamic_sections_created
10170 || h->dynindx == -1)
10171 loc = (htab->reliplt->contents
10172 + (htab->reliplt->reloc_count++
10173 * sizeof (Elf32_External_Rela)));
e054468f 10174 else
25f23106
AM
10175 loc = (htab->relplt->contents
10176 + reloc_index * sizeof (Elf32_External_Rela));
a6aa5195 10177 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 10178
a6aa5195
AM
10179 if (!h->def_regular)
10180 {
0eb4a168
AM
10181 /* Mark the symbol as undefined, rather than as
10182 defined in the .plt section. Leave the value if
10183 there were any relocations where pointer equality
10184 matters (this is a clue for the dynamic linker, to
10185 make function pointer comparisons work between an
10186 application and shared library), otherwise set it
10187 to zero. */
a6aa5195 10188 sym->st_shndx = SHN_UNDEF;
0eb4a168 10189 if (!h->pointer_equality_needed)
a6aa5195 10190 sym->st_value = 0;
0eb4a168
AM
10191 else if (!h->ref_regular_nonweak)
10192 {
625af618
AM
10193 /* This breaks function pointer comparisons, but
10194 that is better than breaking tests for a NULL
0eb4a168 10195 function pointer. */
0eb4a168
AM
10196 sym->st_value = 0;
10197 }
a6aa5195 10198 }
de972ffa 10199 else if (h->type == STT_GNU_IFUNC
0e1862bb 10200 && !bfd_link_pic (info))
de972ffa
AM
10201 {
10202 /* Set the value of ifunc symbols in a non-pie
10203 executable to the glink entry. This is to avoid
10204 text relocations. We can't do this for ifunc in
10205 allocate_dynrelocs, as we do for normal dynamic
10206 function symbols with plt entries, because we need
10207 to keep the original value around for the ifunc
10208 relocation. */
10209 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10210 (output_bfd, htab->glink->output_section));
5b914448
AM
10211 sym->st_value = (ent->glink_offset
10212 + htab->glink->output_offset
de972ffa
AM
10213 + htab->glink->output_section->vma);
10214 }
a6aa5195
AM
10215 doneone = TRUE;
10216 }
e1a9cb8e 10217
e054468f 10218 if (htab->plt_type == PLT_NEW
25f23106
AM
10219 || !htab->elf.dynamic_sections_created
10220 || h->dynindx == -1)
a6aa5195 10221 {
a7f2871e 10222 unsigned char *p;
e054468f 10223 asection *splt = htab->plt;
25f23106
AM
10224 if (!htab->elf.dynamic_sections_created
10225 || h->dynindx == -1)
e054468f 10226 splt = htab->iplt;
e1a9cb8e 10227
a7f2871e
AM
10228 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10229
5446cbdf 10230 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
a7f2871e
AM
10231 {
10232 bfd_put_32 (output_bfd, LWZ_11_3, p);
10233 p += 4;
10234 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10235 p += 4;
10236 bfd_put_32 (output_bfd, MR_0_3, p);
10237 p += 4;
10238 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10239 p += 4;
10240 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10241 p += 4;
10242 bfd_put_32 (output_bfd, BEQLR, p);
10243 p += 4;
10244 bfd_put_32 (output_bfd, MR_3_0, p);
10245 p += 4;
10246 bfd_put_32 (output_bfd, NOP, p);
10247 p += 4;
10248 }
10249
10250 write_glink_stub (ent, splt, p, info);
e1a9cb8e 10251
0e1862bb 10252 if (!bfd_link_pic (info))
e054468f
AM
10253 /* We only need one non-PIC glink stub. */
10254 break;
a6aa5195
AM
10255 }
10256 else
10257 break;
10258 }
e1a9cb8e 10259
25dbc73a
AM
10260 if (h->needs_copy)
10261 {
10262 asection *s;
10263 Elf_Internal_Rela rela;
10264 bfd_byte *loc;
e1a9cb8e 10265
25dbc73a 10266 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 10267
25dbc73a
AM
10268#ifdef DEBUG
10269 fprintf (stderr, ", copy");
10270#endif
e1a9cb8e 10271
25dbc73a 10272 BFD_ASSERT (h->dynindx != -1);
86bbe32f 10273
4dc4a9a5 10274 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
10275 s = htab->relsbss;
10276 else
10277 s = htab->relbss;
10278 BFD_ASSERT (s != NULL);
e1a9cb8e 10279
e87d4038 10280 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
10281 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10282 rela.r_addend = 0;
10283 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10284 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10285 }
e1a9cb8e 10286
25dbc73a
AM
10287#ifdef DEBUG
10288 fprintf (stderr, "\n");
10289#endif
e1a9cb8e 10290
25dbc73a
AM
10291 return TRUE;
10292}
10293\f
10294static enum elf_reloc_type_class
7e612e98
AM
10295ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10296 const asection *rel_sec,
10297 const Elf_Internal_Rela *rela)
e1a9cb8e 10298{
7e612e98
AM
10299 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10300
10301 if (rel_sec == htab->reliplt)
10302 return reloc_class_ifunc;
10303
25dbc73a
AM
10304 switch (ELF32_R_TYPE (rela->r_info))
10305 {
10306 case R_PPC_RELATIVE:
10307 return reloc_class_relative;
25dbc73a
AM
10308 case R_PPC_JMP_SLOT:
10309 return reloc_class_plt;
10310 case R_PPC_COPY:
10311 return reloc_class_copy;
10312 default:
10313 return reloc_class_normal;
10314 }
e1a9cb8e 10315}
25dbc73a
AM
10316\f
10317/* Finish up the dynamic sections. */
e1a9cb8e 10318
25dbc73a
AM
10319static bfd_boolean
10320ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10321 struct bfd_link_info *info)
e1a9cb8e 10322{
25dbc73a 10323 asection *sdyn;
9d8504b1 10324 asection *splt;
25dbc73a 10325 struct ppc_elf_link_hash_table *htab;
1fe44d79 10326 bfd_vma got;
e87d4038
AM
10327 bfd *dynobj;
10328 bfd_boolean ret = TRUE;
e1a9cb8e 10329
25dbc73a
AM
10330#ifdef DEBUG
10331 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10332#endif
6b0817e5 10333
25dbc73a 10334 htab = ppc_elf_hash_table (info);
9d8504b1 10335 dynobj = elf_hash_table (info)->dynobj;
3d4d4302 10336 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9d8504b1 10337 if (htab->is_vxworks)
3d4d4302 10338 splt = bfd_get_linker_section (dynobj, ".plt");
9d8504b1
PB
10339 else
10340 splt = NULL;
e1a9cb8e 10341
1fe44d79
AM
10342 got = 0;
10343 if (htab->elf.hgot != NULL)
e87d4038 10344 got = SYM_VAL (htab->elf.hgot);
1fe44d79 10345
25dbc73a 10346 if (htab->elf.dynamic_sections_created)
e1a9cb8e 10347 {
25dbc73a 10348 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 10349
25dbc73a 10350 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 10351
25dbc73a
AM
10352 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10353 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10354 for (; dyncon < dynconend; dyncon++)
10355 {
10356 Elf_Internal_Dyn dyn;
10357 asection *s;
e1a9cb8e 10358
9d8504b1 10359 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 10360
25dbc73a
AM
10361 switch (dyn.d_tag)
10362 {
10363 case DT_PLTGOT:
9d8504b1
PB
10364 if (htab->is_vxworks)
10365 s = htab->sgotplt;
10366 else
10367 s = htab->plt;
25dbc73a
AM
10368 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10369 break;
86bbe32f 10370
25dbc73a
AM
10371 case DT_PLTRELSZ:
10372 dyn.d_un.d_val = htab->relplt->size;
10373 break;
e1a9cb8e 10374
25dbc73a
AM
10375 case DT_JMPREL:
10376 s = htab->relplt;
10377 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10378 break;
2f89ff8d 10379
1fe44d79
AM
10380 case DT_PPC_GOT:
10381 dyn.d_un.d_ptr = got;
d7128ce4
AM
10382 break;
10383
9d8504b1
PB
10384 case DT_RELASZ:
10385 if (htab->is_vxworks)
10386 {
10387 if (htab->relplt)
10388 dyn.d_un.d_ptr -= htab->relplt->size;
10389 break;
10390 }
10391 continue;
10392
25dbc73a 10393 default:
7a2b07ff
NS
10394 if (htab->is_vxworks
10395 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10396 break;
25dbc73a
AM
10397 continue;
10398 }
4c45e5c9 10399
25dbc73a
AM
10400 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10401 }
10402 }
4c45e5c9 10403
3b36f7e6 10404 if (htab->got != NULL)
25dbc73a 10405 {
e79f5955
AM
10406 if (htab->elf.hgot->root.u.def.section == htab->got
10407 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
e87d4038 10408 {
e79f5955 10409 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 10410
e87d4038
AM
10411 p += htab->elf.hgot->root.u.def.value;
10412 if (htab->plt_type == PLT_OLD)
e79f5955
AM
10413 {
10414 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10415 so that a function can easily find the address of
10416 _GLOBAL_OFFSET_TABLE_. */
10417 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10418 < htab->elf.hgot->root.u.def.section->size);
10419 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10420 }
3b36f7e6 10421
e87d4038 10422 if (sdyn != NULL)
e79f5955
AM
10423 {
10424 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10425 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10426 < htab->elf.hgot->root.u.def.section->size);
10427 bfd_put_32 (output_bfd, val, p);
10428 }
e87d4038
AM
10429 }
10430 else
10431 {
8de848d8 10432 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
25f53a85
AM
10433 htab->elf.hgot->root.root.string,
10434 (htab->sgotplt != NULL
10435 ? htab->sgotplt->name : htab->got->name));
e87d4038
AM
10436 bfd_set_error (bfd_error_bad_value);
10437 ret = FALSE;
10438 }
25dbc73a
AM
10439
10440 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10441 }
10442
9d8504b1
PB
10443 /* Fill in the first entry in the VxWorks procedure linkage table. */
10444 if (splt && splt->size > 0)
10445 {
10446 /* Use the right PLT. */
0e1862bb 10447 const bfd_vma *plt_entry = (bfd_link_pic (info)
5b914448
AM
10448 ? ppc_elf_vxworks_pic_plt0_entry
10449 : ppc_elf_vxworks_plt0_entry);
9d8504b1 10450
0e1862bb 10451 if (!bfd_link_pic (info))
9d8504b1 10452 {
e87d4038 10453 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 10454
e87d4038 10455 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 10456 splt->contents + 0);
e87d4038 10457 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
10458 splt->contents + 4);
10459 }
10460 else
10461 {
10462 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10463 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10464 }
10465 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10466 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10467 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10468 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10469 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10470 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10471
0e1862bb 10472 if (! bfd_link_pic (info))
9d8504b1
PB
10473 {
10474 Elf_Internal_Rela rela;
10475 bfd_byte *loc;
10476
10477 loc = htab->srelplt2->contents;
10478
10479 /* Output the @ha relocation for the first instruction. */
10480 rela.r_offset = (htab->plt->output_section->vma
10481 + htab->plt->output_offset
10482 + 2);
636ce3f5 10483 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10484 rela.r_addend = 0;
10485 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10486 loc += sizeof (Elf32_External_Rela);
5b914448 10487
9d8504b1
PB
10488 /* Output the @l relocation for the second instruction. */
10489 rela.r_offset = (htab->plt->output_section->vma
10490 + htab->plt->output_offset
10491 + 6);
636ce3f5 10492 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10493 rela.r_addend = 0;
10494 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10495 loc += sizeof (Elf32_External_Rela);
10496
10497 /* Fix up the remaining relocations. They may have the wrong
10498 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10499 in which symbols were output. */
10500 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10501 {
10502 Elf_Internal_Rela rel;
10503
10504 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10505 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10506 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10507 loc += sizeof (Elf32_External_Rela);
10508
10509 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10510 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10511 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10512 loc += sizeof (Elf32_External_Rela);
10513
10514 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 10515 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
10516 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10517 loc += sizeof (Elf32_External_Rela);
10518 }
10519 }
10520 }
10521
e054468f
AM
10522 if (htab->glink != NULL
10523 && htab->glink->contents != NULL
10524 && htab->elf.dynamic_sections_created)
d7128ce4
AM
10525 {
10526 unsigned char *p;
10527 unsigned char *endp;
a6aa5195 10528 bfd_vma res0;
d7128ce4 10529 unsigned int i;
a6aa5195
AM
10530
10531 /*
10532 * PIC glink code is the following:
10533 *
10534 * # ith PLT code stub.
10535 * addis 11,30,(plt+(i-1)*4-got)@ha
10536 * lwz 11,(plt+(i-1)*4-got)@l(11)
10537 * mtctr 11
10538 * bctr
10539 *
10540 * # A table of branches, one for each plt entry.
176a0d42 10541 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
10542 * # addresses, so (r11 - res_0) gives the plt index * 4.
10543 * res_0: b PLTresolve
10544 * res_1: b PLTresolve
10545 * .
10546 * # Some number of entries towards the end can be nops
10547 * res_n_m3: nop
10548 * res_n_m2: nop
10549 * res_n_m1:
10550 *
10551 * PLTresolve:
10552 * addis 11,11,(1f-res_0)@ha
10553 * mflr 0
10554 * bcl 20,31,1f
10555 * 1: addi 11,11,(1b-res_0)@l
10556 * mflr 12
10557 * mtlr 0
10558 * sub 11,11,12 # r11 = index * 4
10559 * addis 12,12,(got+4-1b)@ha
10560 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10561 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10562 * mtctr 0
10563 * add 0,11,11
10564 * add 11,0,11 # r11 = index * 12 = reloc offset.
10565 * bctr
10566 */
10567 static const unsigned int pic_plt_resolve[] =
10568 {
10569 ADDIS_11_11,
10570 MFLR_0,
10571 BCL_20_31,
10572 ADDI_11_11,
10573 MFLR_12,
10574 MTLR_0,
10575 SUB_11_11_12,
10576 ADDIS_12_12,
10577 LWZ_0_12,
10578 LWZ_12_12,
10579 MTCTR_0,
10580 ADD_0_11_11,
10581 ADD_11_0_11,
10582 BCTR,
10583 NOP,
10584 NOP
10585 };
10586
176a0d42
AM
10587 /*
10588 * Non-PIC glink code is a little simpler.
10589 *
10590 * # ith PLT code stub.
10591 * lis 11,(plt+(i-1)*4)@ha
10592 * lwz 11,(plt+(i-1)*4)@l(11)
10593 * mtctr 11
10594 * bctr
10595 *
10596 * The branch table is the same, then comes
10597 *
10598 * PLTresolve:
10599 * lis 12,(got+4)@ha
10600 * addis 11,11,(-res_0)@ha
10601 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10602 * addi 11,11,(-res_0)@l # r11 = index * 4
10603 * mtctr 0
10604 * add 0,11,11
10605 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10606 * add 11,0,11 # r11 = index * 12 = reloc offset.
10607 * bctr
10608 */
d7128ce4
AM
10609 static const unsigned int plt_resolve[] =
10610 {
a6aa5195
AM
10611 LIS_12,
10612 ADDIS_11_11,
10613 LWZ_0_12,
10614 ADDI_11_11,
d7128ce4 10615 MTCTR_0,
7e8aeb9a 10616 ADD_0_11_11,
a6aa5195 10617 LWZ_12_12,
7e8aeb9a 10618 ADD_11_0_11,
d7128ce4
AM
10619 BCTR,
10620 NOP,
10621 NOP,
a6aa5195
AM
10622 NOP,
10623 NOP,
10624 NOP,
10625 NOP,
d7128ce4
AM
10626 NOP
10627 };
10628
a6aa5195
AM
10629 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10630 abort ();
10631 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
10632 abort ();
10633
a6aa5195 10634 /* Build the branch table, one for each plt entry (less one),
86b9da88 10635 and perhaps some padding. */
a6aa5195
AM
10636 p = htab->glink->contents;
10637 p += htab->glink_pltresolve;
86b9da88
AM
10638 endp = htab->glink->contents;
10639 endp += htab->glink->size - GLINK_PLTRESOLVE;
da3a2088 10640 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
86b9da88
AM
10641 {
10642 bfd_put_32 (output_bfd, B + endp - p, p);
10643 p += 4;
10644 }
10645 while (p < endp)
10646 {
10647 bfd_put_32 (output_bfd, NOP, p);
10648 p += 4;
10649 }
10650
7e8aeb9a 10651 res0 = (htab->glink_pltresolve
86b9da88
AM
10652 + htab->glink->output_section->vma
10653 + htab->glink->output_offset);
10654
da3a2088
AM
10655 if (htab->params->ppc476_workaround)
10656 {
10657 /* Ensure that a call stub at the end of a page doesn't
10658 result in prefetch over the end of the page into the
10659 glink branch table. */
10660 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10661 bfd_vma page_addr;
10662 bfd_vma glink_start = (htab->glink->output_section->vma
10663 + htab->glink->output_offset);
10664
10665 for (page_addr = res0 & -pagesize;
10666 page_addr > glink_start;
10667 page_addr -= pagesize)
10668 {
10669 /* We have a plt call stub that may need fixing. */
10670 bfd_byte *loc;
10671 unsigned int insn;
10672
10673 loc = htab->glink->contents + page_addr - 4 - glink_start;
10674 insn = bfd_get_32 (output_bfd, loc);
10675 if (insn == BCTR)
10676 {
10677 /* By alignment, we know that there must be at least
10678 one other call stub before this one. */
10679 insn = bfd_get_32 (output_bfd, loc - 16);
10680 if (insn == BCTR)
10681 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10682 else
10683 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10684 }
10685 }
10686 }
10687
86b9da88 10688 /* Last comes the PLTresolve stub. */
0e1862bb 10689 if (bfd_link_pic (info))
7e8aeb9a 10690 {
a6aa5195 10691 bfd_vma bcl;
d7128ce4 10692
a6aa5195 10693 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 10694 {
da3a2088
AM
10695 unsigned int insn = pic_plt_resolve[i];
10696
10697 if (htab->params->ppc476_workaround && insn == NOP)
10698 insn = BA + 0;
10699 bfd_put_32 (output_bfd, insn, p);
7e8aeb9a
AM
10700 p += 4;
10701 }
a6aa5195
AM
10702 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10703
10704 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10705 + htab->glink->output_section->vma
10706 + htab->glink->output_offset);
10707
10708 bfd_put_32 (output_bfd,
10709 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10710 bfd_put_32 (output_bfd,
10711 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10712 bfd_put_32 (output_bfd,
10713 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10714 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10715 {
10716 bfd_put_32 (output_bfd,
10717 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10718 bfd_put_32 (output_bfd,
10719 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10720 }
10721 else
10722 {
10723 bfd_put_32 (output_bfd,
10724 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10725 bfd_put_32 (output_bfd,
10726 LWZ_12_12 + 4, p + 9*4);
10727 }
7e8aeb9a
AM
10728 }
10729 else
d7128ce4 10730 {
a6aa5195 10731 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a 10732 {
da3a2088
AM
10733 unsigned int insn = plt_resolve[i];
10734
10735 if (htab->params->ppc476_workaround && insn == NOP)
10736 insn = BA + 0;
10737 bfd_put_32 (output_bfd, insn, p);
7e8aeb9a
AM
10738 p += 4;
10739 }
a6aa5195
AM
10740 p -= 4 * ARRAY_SIZE (plt_resolve);
10741
10742 bfd_put_32 (output_bfd,
10743 LIS_12 + PPC_HA (got + 4), p + 0*4);
10744 bfd_put_32 (output_bfd,
10745 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10746 bfd_put_32 (output_bfd,
10747 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10748 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10749 {
10750 bfd_put_32 (output_bfd,
10751 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10752 bfd_put_32 (output_bfd,
10753 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10754 }
10755 else
10756 {
10757 bfd_put_32 (output_bfd,
10758 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10759 bfd_put_32 (output_bfd,
10760 LWZ_12_12 + 4, p + 6*4);
10761 }
d7128ce4 10762 }
d7128ce4
AM
10763 }
10764
6177242a
AM
10765 if (htab->glink_eh_frame != NULL
10766 && htab->glink_eh_frame->contents != NULL)
10767 {
10768 unsigned char *p = htab->glink_eh_frame->contents;
10769 bfd_vma val;
10770
6177242a
AM
10771 p += sizeof (glink_eh_frame_cie);
10772 /* FDE length. */
6177242a
AM
10773 p += 4;
10774 /* CIE pointer. */
6177242a
AM
10775 p += 4;
10776 /* Offset to .glink. */
10777 val = (htab->glink->output_section->vma
10778 + htab->glink->output_offset);
10779 val -= (htab->glink_eh_frame->output_section->vma
10780 + htab->glink_eh_frame->output_offset);
10781 val -= p - htab->glink_eh_frame->contents;
10782 bfd_put_32 (htab->elf.dynobj, val, p);
6177242a 10783
dbaa2011 10784 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
6177242a
AM
10785 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10786 htab->glink_eh_frame,
10787 htab->glink_eh_frame->contents))
10788 return FALSE;
10789 }
10790
e87d4038 10791 return ret;
25dbc73a 10792}
e1a9cb8e 10793\f
6d00b590 10794#define TARGET_LITTLE_SYM powerpc_elf32_le_vec
252b5132 10795#define TARGET_LITTLE_NAME "elf32-powerpcle"
6d00b590 10796#define TARGET_BIG_SYM powerpc_elf32_vec
252b5132
RH
10797#define TARGET_BIG_NAME "elf32-powerpc"
10798#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 10799#define ELF_TARGET_ID PPC32_ELF_DATA
252b5132 10800#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
10801#ifdef __QNXTARGET__
10802#define ELF_MAXPAGESIZE 0x1000
04c6a44c 10803#define ELF_COMMONPAGESIZE 0x1000
d0facd1b 10804#else
252b5132 10805#define ELF_MAXPAGESIZE 0x10000
04c6a44c 10806#define ELF_COMMONPAGESIZE 0x10000
d0facd1b 10807#endif
b1342370 10808#define ELF_MINPAGESIZE 0x1000
252b5132
RH
10809#define elf_info_to_howto ppc_elf_info_to_howto
10810
10811#ifdef EM_CYGNUS_POWERPC
10812#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10813#endif
10814
10815#ifdef EM_PPC_OLD
10816#define ELF_MACHINE_ALT2 EM_PPC_OLD
10817#endif
10818
10819#define elf_backend_plt_not_loaded 1
252b5132 10820#define elf_backend_can_gc_sections 1
51b64d56 10821#define elf_backend_can_refcount 1
b491616a 10822#define elf_backend_rela_normal 1
53291d1f 10823#define elf_backend_caches_rawsize 1
252b5132 10824
43c40ab2 10825#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 10826#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 10827#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 10828#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
b9c361e0 10829#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 10830#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 10831#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 10832#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 10833
feee612b 10834#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
10835#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10836#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10837#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10838#define elf_backend_relocate_section ppc_elf_relocate_section
10839#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10840#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 10841#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
10842#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10843#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10844#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 10845#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
10846#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10847#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10848#define elf_backend_fake_sections ppc_elf_fake_sections
10849#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
b9c361e0 10850#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
c5fccbec
DJ
10851#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10852#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 10853#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 10854#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
10855#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10856#define elf_backend_final_write_processing ppc_elf_final_write_processing
10857#define elf_backend_write_section ppc_elf_write_section
551b43fd 10858#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 10859#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 10860#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 10861#define elf_backend_init_index_section _bfd_elf_init_1_index_section
b9c361e0 10862#define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
b9c361e0 10863#define elf_backend_section_processing ppc_elf_section_processing
252b5132
RH
10864
10865#include "elf32-target.h"
9d8504b1 10866
7b8e7dad
AM
10867/* FreeBSD Target */
10868
10869#undef TARGET_LITTLE_SYM
10870#undef TARGET_LITTLE_NAME
10871
10872#undef TARGET_BIG_SYM
6d00b590 10873#define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
7b8e7dad
AM
10874#undef TARGET_BIG_NAME
10875#define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10876
10877#undef ELF_OSABI
10878#define ELF_OSABI ELFOSABI_FREEBSD
10879
10880#undef elf32_bed
10881#define elf32_bed elf32_powerpc_fbsd_bed
10882
10883#include "elf32-target.h"
10884
9d8504b1
PB
10885/* VxWorks 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_vxworks_vec
9d8504b1
PB
10892#undef TARGET_BIG_NAME
10893#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10894
7b8e7dad
AM
10895#undef ELF_OSABI
10896
d5e3d971
PB
10897/* VxWorks uses the elf default section flags for .plt. */
10898static const struct bfd_elf_special_section *
10899ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 10900{
d5e3d971
PB
10901 if (sec->name == NULL)
10902 return NULL;
10903
10904 if (strcmp (sec->name, ".plt") == 0)
10905 return _bfd_elf_get_sec_type_attr (abfd, sec);
10906
10907 return ppc_elf_get_sec_type_attr (abfd, sec);
10908}
9d8504b1
PB
10909
10910/* Like ppc_elf_link_hash_table_create, but overrides
10911 appropriately for VxWorks. */
10912static struct bfd_link_hash_table *
10913ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10914{
10915 struct bfd_link_hash_table *ret;
10916
10917 ret = ppc_elf_link_hash_table_create (abfd);
10918 if (ret)
10919 {
10920 struct ppc_elf_link_hash_table *htab
10921 = (struct ppc_elf_link_hash_table *)ret;
10922 htab->is_vxworks = 1;
4a3dc543 10923 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
10924 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10925 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10926 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10927 }
10928 return ret;
10929}
10930
10931/* Tweak magic VxWorks symbols as they are loaded. */
10932static bfd_boolean
10933ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10934 struct bfd_link_info *info,
10935 Elf_Internal_Sym *sym,
10936 const char **namep ATTRIBUTE_UNUSED,
10937 flagword *flagsp ATTRIBUTE_UNUSED,
10938 asection **secp,
10939 bfd_vma *valp)
10940{
10941 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10942 valp))
10943 return FALSE;
10944
10945 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10946}
10947
9d8504b1
PB
10948static void
10949ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10950{
10951 ppc_elf_final_write_processing(abfd, linker);
10952 elf_vxworks_final_write_processing(abfd, linker);
10953}
10954
10955/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10956 define it. */
10957#undef elf_backend_want_plt_sym
10958#define elf_backend_want_plt_sym 1
10959#undef elf_backend_want_got_plt
10960#define elf_backend_want_got_plt 1
10961#undef elf_backend_got_symbol_offset
10962#define elf_backend_got_symbol_offset 0
10963#undef elf_backend_plt_not_loaded
10964#define elf_backend_plt_not_loaded 0
10965#undef elf_backend_plt_readonly
10966#define elf_backend_plt_readonly 1
10967#undef elf_backend_got_header_size
10968#define elf_backend_got_header_size 12
10969
468392fb
AM
10970#undef bfd_elf32_get_synthetic_symtab
10971
9d8504b1
PB
10972#undef bfd_elf32_bfd_link_hash_table_create
10973#define bfd_elf32_bfd_link_hash_table_create \
10974 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
10975#undef elf_backend_add_symbol_hook
10976#define elf_backend_add_symbol_hook \
10977 ppc_elf_vxworks_add_symbol_hook
10978#undef elf_backend_link_output_symbol_hook
10979#define elf_backend_link_output_symbol_hook \
9c72ff84 10980 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
10981#undef elf_backend_final_write_processing
10982#define elf_backend_final_write_processing \
10983 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
10984#undef elf_backend_get_sec_type_attr
10985#define elf_backend_get_sec_type_attr \
10986 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
10987#undef elf_backend_emit_relocs
10988#define elf_backend_emit_relocs \
10989 elf_vxworks_emit_relocs
10990
10991#undef elf32_bed
10992#define elf32_bed ppc_elf_vxworks_bed
e054468f 10993#undef elf_backend_post_process_headers
9d8504b1
PB
10994
10995#include "elf32-target.h"
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