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PowerPC64 __tls_get_addr sequence optimization
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252b5132 1/* PowerPC-specific support for 32-bit ELF
2571583a 2 Copyright (C) 1994-2017 Free Software Foundation, Inc.
252b5132
RH
3 Written by Ian Lance Taylor, Cygnus Support.
4
ae9a127f 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
ae9a127f
NC
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
ae9a127f 10 (at your option) any later version.
252b5132 11
ae9a127f
NC
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
252b5132 16
ae9a127f 17 You should have received a copy of the GNU General Public License
fc0bffd6 18 along with this program; if not, write to the
3e110533 19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
53e09e0a 20 Boston, MA 02110-1301, USA. */
252b5132 21
cd123cb7 22
252b5132
RH
23/* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
3db64b00 28#include "sysdep.h"
183e98be 29#include <stdarg.h>
252b5132 30#include "bfd.h"
252b5132
RH
31#include "bfdlink.h"
32#include "libbfd.h"
33#include "elf-bfd.h"
34#include "elf/ppc.h"
7619e7c7 35#include "elf32-ppc.h"
9d8504b1 36#include "elf-vxworks.h"
6177242a 37#include "dwarf2.h"
08dc996f 38#include "opcode/ppc.h"
252b5132 39
b9c361e0
JL
40typedef enum split16_format_type
41{
42 split16a_type = 0,
43 split16d_type
44}
45split16_format_type;
46
f0fe0e16 47/* RELA relocations are used here. */
252b5132 48
252b5132 49static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 51static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 53
70bccea4
AM
54/* Branch prediction bit for branch taken relocs. */
55#define BRANCH_PREDICT_BIT 0x200000
56/* Mask to set RA in memory instructions. */
57#define RA_REGISTER_MASK 0x001f0000
58/* Value to shift register by to insert RA. */
59#define RA_REGISTER_SHIFT 16
252b5132
RH
60
61/* The name of the dynamic interpreter. This is put in the .interp
62 section. */
252b5132
RH
63#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64
d7128ce4 65/* For old-style PLT. */
252b5132
RH
66/* The number of single-slot PLT entries (the rest use two slots). */
67#define PLT_NUM_SINGLE_ENTRIES 8192
68
d7128ce4 69/* For new-style .glink and .plt. */
a6aa5195 70#define GLINK_PLTRESOLVE 16*4
d7128ce4 71#define GLINK_ENTRY_SIZE 4*4
a7f2871e 72#define TLS_GET_ADDR_GLINK_SIZE 12*4
d7128ce4 73
9d8504b1
PB
74/* VxWorks uses its own plt layout, filled in by the static linker. */
75
76/* The standard VxWorks PLT entry. */
77#define VXWORKS_PLT_ENTRY_SIZE 32
78static const bfd_vma ppc_elf_vxworks_plt_entry
79 [VXWORKS_PLT_ENTRY_SIZE / 4] =
80 {
81 0x3d800000, /* lis r12,0 */
82 0x818c0000, /* lwz r12,0(r12) */
83 0x7d8903a6, /* mtctr r12 */
84 0x4e800420, /* bctr */
85 0x39600000, /* li r11,0 */
86 0x48000000, /* b 14 <.PLT0resolve+0x4> */
87 0x60000000, /* nop */
88 0x60000000, /* nop */
89 };
90static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 [VXWORKS_PLT_ENTRY_SIZE / 4] =
92 {
93 0x3d9e0000, /* addis r12,r30,0 */
94 0x818c0000, /* lwz r12,0(r12) */
95 0x7d8903a6, /* mtctr r12 */
96 0x4e800420, /* bctr */
97 0x39600000, /* li r11,0 */
98 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
99 0x60000000, /* nop */
100 0x60000000, /* nop */
101 };
102
103/* The initial VxWorks PLT entry. */
104#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105static const bfd_vma ppc_elf_vxworks_plt0_entry
106 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
107 {
108 0x3d800000, /* lis r12,0 */
109 0x398c0000, /* addi r12,r12,0 */
110 0x800c0008, /* lwz r0,8(r12) */
111 0x7c0903a6, /* mtctr r0 */
112 0x818c0004, /* lwz r12,4(r12) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
116 };
117static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
119 {
120 0x819e0008, /* lwz r12,8(r30) */
121 0x7d8903a6, /* mtctr r12 */
122 0x819e0004, /* lwz r12,4(r30) */
123 0x4e800420, /* bctr */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
128 };
129
130/* For executables, we have some additional relocations in
131 .rela.plt.unloaded, for the kernel loader. */
132
133/* The number of non-JMP_SLOT relocations per PLT0 slot. */
134#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135/* The number of relocations in the PLTResolve slot. */
136#define VXWORKS_PLTRESOLVE_RELOCS 2
de194d85 137/* The number of relocations in the PLTResolve slot when creating
9d8504b1
PB
138 a shared library. */
139#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
140
d7128ce4 141/* Some instructions. */
d7128ce4 142#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM
143#define ADDIS_11_30 0x3d7e0000
144#define ADDIS_12_12 0x3d8c0000
d7128ce4 145#define ADDI_11_11 0x396b0000
d7128ce4 146#define ADD_0_11_11 0x7c0b5a14
a7f2871e 147#define ADD_3_12_2 0x7c6c1214
d7128ce4 148#define ADD_11_0_11 0x7d605a14
a6aa5195 149#define B 0x48000000
da3a2088 150#define BA 0x48000002
a6aa5195 151#define BCL_20_31 0x429f0005
d7128ce4 152#define BCTR 0x4e800420
a7f2871e
AM
153#define BEQLR 0x4d820020
154#define CMPWI_11_0 0x2c0b0000
7e8aeb9a
AM
155#define LIS_11 0x3d600000
156#define LIS_12 0x3d800000
a6aa5195
AM
157#define LWZU_0_12 0x840c0000
158#define LWZ_0_12 0x800c0000
a7f2871e 159#define LWZ_11_3 0x81630000
a6aa5195
AM
160#define LWZ_11_11 0x816b0000
161#define LWZ_11_30 0x817e0000
a7f2871e 162#define LWZ_12_3 0x81830000
a6aa5195 163#define LWZ_12_12 0x818c0000
a7f2871e
AM
164#define MR_0_3 0x7c601b78
165#define MR_3_0 0x7c030378
a6aa5195
AM
166#define MFLR_0 0x7c0802a6
167#define MFLR_12 0x7d8802a6
168#define MTCTR_0 0x7c0903a6
169#define MTCTR_11 0x7d6903a6
170#define MTLR_0 0x7c0803a6
171#define NOP 0x60000000
172#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM
173
174/* Offset of tp and dtp pointers from start of TLS block. */
175#define TP_OFFSET 0x7000
176#define DTP_OFFSET 0x8000
e87d4038
AM
177
178/* The value of a defined global symbol. */
179#define SYM_VAL(SYM) \
180 ((SYM)->root.u.def.section->output_section->vma \
181 + (SYM)->root.u.def.section->output_offset \
182 + (SYM)->root.u.def.value)
7fce784e 183\f
e47cd125 184static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 185
8da6118f 186static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH
187 /* This reloc does nothing. */
188 HOWTO (R_PPC_NONE, /* type */
189 0, /* rightshift */
6346d5ca
AM
190 3, /* size (0 = byte, 1 = short, 2 = long) */
191 0, /* bitsize */
b34976b6 192 FALSE, /* pc_relative */
252b5132 193 0, /* bitpos */
86c95733 194 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
195 bfd_elf_generic_reloc, /* special_function */
196 "R_PPC_NONE", /* name */
b34976b6 197 FALSE, /* partial_inplace */
252b5132
RH
198 0, /* src_mask */
199 0, /* dst_mask */
b34976b6 200 FALSE), /* pcrel_offset */
252b5132
RH
201
202 /* A standard 32 bit relocation. */
203 HOWTO (R_PPC_ADDR32, /* type */
204 0, /* rightshift */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
206 32, /* bitsize */
b34976b6 207 FALSE, /* pc_relative */
252b5132 208 0, /* bitpos */
86c95733 209 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
210 bfd_elf_generic_reloc, /* special_function */
211 "R_PPC_ADDR32", /* name */
b34976b6 212 FALSE, /* partial_inplace */
252b5132
RH
213 0, /* src_mask */
214 0xffffffff, /* dst_mask */
b34976b6 215 FALSE), /* pcrel_offset */
252b5132
RH
216
217 /* An absolute 26 bit branch; the lower two bits must be zero.
218 FIXME: we don't check that, we just clear them. */
219 HOWTO (R_PPC_ADDR24, /* type */
220 0, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 26, /* bitsize */
b34976b6 223 FALSE, /* pc_relative */
252b5132 224 0, /* bitpos */
86c95733 225 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC_ADDR24", /* name */
b34976b6 228 FALSE, /* partial_inplace */
252b5132
RH
229 0, /* src_mask */
230 0x3fffffc, /* dst_mask */
b34976b6 231 FALSE), /* pcrel_offset */
252b5132
RH
232
233 /* A standard 16 bit relocation. */
234 HOWTO (R_PPC_ADDR16, /* type */
235 0, /* rightshift */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
237 16, /* bitsize */
b34976b6 238 FALSE, /* pc_relative */
252b5132
RH
239 0, /* bitpos */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC_ADDR16", /* name */
b34976b6 243 FALSE, /* partial_inplace */
252b5132
RH
244 0, /* src_mask */
245 0xffff, /* dst_mask */
b34976b6 246 FALSE), /* pcrel_offset */
252b5132
RH
247
248 /* A 16 bit relocation without overflow. */
249 HOWTO (R_PPC_ADDR16_LO, /* type */
250 0, /* rightshift */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
252 16, /* bitsize */
b34976b6 253 FALSE, /* pc_relative */
252b5132
RH
254 0, /* bitpos */
255 complain_overflow_dont,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_PPC_ADDR16_LO", /* name */
b34976b6 258 FALSE, /* partial_inplace */
252b5132
RH
259 0, /* src_mask */
260 0xffff, /* dst_mask */
b34976b6 261 FALSE), /* pcrel_offset */
252b5132
RH
262
263 /* The high order 16 bits of an address. */
264 HOWTO (R_PPC_ADDR16_HI, /* type */
265 16, /* rightshift */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
b34976b6 268 FALSE, /* pc_relative */
252b5132
RH
269 0, /* bitpos */
270 complain_overflow_dont, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_PPC_ADDR16_HI", /* name */
b34976b6 273 FALSE, /* partial_inplace */
252b5132
RH
274 0, /* src_mask */
275 0xffff, /* dst_mask */
b34976b6 276 FALSE), /* pcrel_offset */
252b5132
RH
277
278 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 279 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH
280 HOWTO (R_PPC_ADDR16_HA, /* type */
281 16, /* rightshift */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
283 16, /* bitsize */
b34976b6 284 FALSE, /* pc_relative */
252b5132
RH
285 0, /* bitpos */
286 complain_overflow_dont, /* complain_on_overflow */
287 ppc_elf_addr16_ha_reloc, /* special_function */
288 "R_PPC_ADDR16_HA", /* name */
b34976b6 289 FALSE, /* partial_inplace */
252b5132
RH
290 0, /* src_mask */
291 0xffff, /* dst_mask */
b34976b6 292 FALSE), /* pcrel_offset */
252b5132
RH
293
294 /* An absolute 16 bit branch; the lower two bits must be zero.
295 FIXME: we don't check that, we just clear them. */
296 HOWTO (R_PPC_ADDR14, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
b34976b6 300 FALSE, /* pc_relative */
252b5132 301 0, /* bitpos */
86c95733 302 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14", /* name */
b34976b6 305 FALSE, /* partial_inplace */
252b5132
RH
306 0, /* src_mask */
307 0xfffc, /* dst_mask */
b34976b6 308 FALSE), /* pcrel_offset */
252b5132
RH
309
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is expected to be taken. The lower two
8da6118f 312 bits must be zero. */
252b5132
RH
313 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
314 0, /* rightshift */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
316 16, /* bitsize */
b34976b6 317 FALSE, /* pc_relative */
252b5132 318 0, /* bitpos */
86c95733 319 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 322 FALSE, /* partial_inplace */
252b5132
RH
323 0, /* src_mask */
324 0xfffc, /* dst_mask */
b34976b6 325 FALSE), /* pcrel_offset */
252b5132
RH
326
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is not expected to be taken. The lower
329 two bits must be zero. */
330 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
331 0, /* rightshift */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
333 16, /* bitsize */
b34976b6 334 FALSE, /* pc_relative */
252b5132 335 0, /* bitpos */
86c95733 336 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 339 FALSE, /* partial_inplace */
252b5132
RH
340 0, /* src_mask */
341 0xfffc, /* dst_mask */
b34976b6 342 FALSE), /* pcrel_offset */
252b5132 343
8da6118f 344 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH
345 HOWTO (R_PPC_REL24, /* type */
346 0, /* rightshift */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
348 26, /* bitsize */
b34976b6 349 TRUE, /* pc_relative */
252b5132
RH
350 0, /* bitpos */
351 complain_overflow_signed, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC_REL24", /* name */
b34976b6 354 FALSE, /* partial_inplace */
252b5132
RH
355 0, /* src_mask */
356 0x3fffffc, /* dst_mask */
b34976b6 357 TRUE), /* pcrel_offset */
252b5132 358
8da6118f 359 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH
360 HOWTO (R_PPC_REL14, /* type */
361 0, /* rightshift */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
363 16, /* bitsize */
b34976b6 364 TRUE, /* pc_relative */
252b5132
RH
365 0, /* bitpos */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14", /* name */
b34976b6 369 FALSE, /* partial_inplace */
252b5132
RH
370 0, /* src_mask */
371 0xfffc, /* dst_mask */
b34976b6 372 TRUE), /* pcrel_offset */
252b5132 373
8da6118f 374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
375 the branch is expected to be taken. The lower two bits must be
376 zero. */
377 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
b34976b6 381 TRUE, /* pc_relative */
252b5132
RH
382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 386 FALSE, /* partial_inplace */
252b5132
RH
387 0, /* src_mask */
388 0xfffc, /* dst_mask */
b34976b6 389 TRUE), /* pcrel_offset */
252b5132 390
8da6118f 391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
392 the branch is not expected to be taken. The lower two bits must
393 be zero. */
394 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 16, /* bitsize */
b34976b6 398 TRUE, /* pc_relative */
252b5132
RH
399 0, /* bitpos */
400 complain_overflow_signed, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 403 FALSE, /* partial_inplace */
252b5132
RH
404 0, /* src_mask */
405 0xfffc, /* dst_mask */
b34976b6 406 TRUE), /* pcrel_offset */
252b5132
RH
407
408 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
409 symbol. */
410 HOWTO (R_PPC_GOT16, /* type */
411 0, /* rightshift */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
b34976b6 414 FALSE, /* pc_relative */
252b5132
RH
415 0, /* bitpos */
416 complain_overflow_signed, /* complain_on_overflow */
3ce51288 417 ppc_elf_unhandled_reloc, /* special_function */
252b5132 418 "R_PPC_GOT16", /* name */
b34976b6 419 FALSE, /* partial_inplace */
252b5132
RH
420 0, /* src_mask */
421 0xffff, /* dst_mask */
b34976b6 422 FALSE), /* pcrel_offset */
252b5132
RH
423
424 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
425 the symbol. */
426 HOWTO (R_PPC_GOT16_LO, /* type */
427 0, /* rightshift */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
429 16, /* bitsize */
b34976b6 430 FALSE, /* pc_relative */
252b5132
RH
431 0, /* bitpos */
432 complain_overflow_dont, /* complain_on_overflow */
3ce51288 433 ppc_elf_unhandled_reloc, /* special_function */
252b5132 434 "R_PPC_GOT16_LO", /* name */
b34976b6 435 FALSE, /* partial_inplace */
252b5132
RH
436 0, /* src_mask */
437 0xffff, /* dst_mask */
b34976b6 438 FALSE), /* pcrel_offset */
252b5132
RH
439
440 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
441 the symbol. */
442 HOWTO (R_PPC_GOT16_HI, /* type */
443 16, /* rightshift */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
445 16, /* bitsize */
b34976b6 446 FALSE, /* pc_relative */
252b5132 447 0, /* bitpos */
86c95733 448 complain_overflow_dont, /* complain_on_overflow */
3ce51288 449 ppc_elf_unhandled_reloc, /* special_function */
252b5132 450 "R_PPC_GOT16_HI", /* name */
b34976b6 451 FALSE, /* partial_inplace */
252b5132
RH
452 0, /* src_mask */
453 0xffff, /* dst_mask */
b34976b6 454 FALSE), /* pcrel_offset */
252b5132
RH
455
456 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
457 the symbol. */
458 HOWTO (R_PPC_GOT16_HA, /* type */
459 16, /* rightshift */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
461 16, /* bitsize */
b34976b6 462 FALSE, /* pc_relative */
252b5132 463 0, /* bitpos */
86c95733 464 complain_overflow_dont, /* complain_on_overflow */
3ce51288 465 ppc_elf_unhandled_reloc, /* special_function */
252b5132 466 "R_PPC_GOT16_HA", /* name */
b34976b6 467 FALSE, /* partial_inplace */
252b5132
RH
468 0, /* src_mask */
469 0xffff, /* dst_mask */
b34976b6 470 FALSE), /* pcrel_offset */
252b5132
RH
471
472 /* Like R_PPC_REL24, but referring to the procedure linkage table
473 entry for the symbol. */
474 HOWTO (R_PPC_PLTREL24, /* type */
475 0, /* rightshift */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
477 26, /* bitsize */
b34976b6 478 TRUE, /* pc_relative */
252b5132 479 0, /* bitpos */
3ce51288
AM
480 complain_overflow_signed, /* complain_on_overflow */
481 ppc_elf_unhandled_reloc, /* special_function */
252b5132 482 "R_PPC_PLTREL24", /* name */
b34976b6 483 FALSE, /* partial_inplace */
252b5132
RH
484 0, /* src_mask */
485 0x3fffffc, /* dst_mask */
b34976b6 486 TRUE), /* pcrel_offset */
252b5132
RH
487
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC_COPY, /* type */
494 0, /* rightshift */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
496 32, /* bitsize */
b34976b6 497 FALSE, /* pc_relative */
252b5132 498 0, /* bitpos */
86c95733 499 complain_overflow_dont, /* complain_on_overflow */
3ce51288 500 ppc_elf_unhandled_reloc, /* special_function */
252b5132 501 "R_PPC_COPY", /* name */
b34976b6 502 FALSE, /* partial_inplace */
252b5132
RH
503 0, /* src_mask */
504 0, /* dst_mask */
b34976b6 505 FALSE), /* pcrel_offset */
252b5132
RH
506
507 /* Like R_PPC_ADDR32, but used when setting global offset table
508 entries. */
509 HOWTO (R_PPC_GLOB_DAT, /* type */
510 0, /* rightshift */
511 2, /* size (0 = byte, 1 = short, 2 = long) */
512 32, /* bitsize */
b34976b6 513 FALSE, /* pc_relative */
252b5132 514 0, /* bitpos */
86c95733 515 complain_overflow_dont, /* complain_on_overflow */
3ce51288 516 ppc_elf_unhandled_reloc, /* special_function */
252b5132 517 "R_PPC_GLOB_DAT", /* name */
b34976b6 518 FALSE, /* partial_inplace */
252b5132
RH
519 0, /* src_mask */
520 0xffffffff, /* dst_mask */
b34976b6 521 FALSE), /* pcrel_offset */
252b5132
RH
522
523 /* Marks a procedure linkage table entry for a symbol. */
524 HOWTO (R_PPC_JMP_SLOT, /* type */
525 0, /* rightshift */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
527 32, /* bitsize */
b34976b6 528 FALSE, /* pc_relative */
252b5132 529 0, /* bitpos */
86c95733 530 complain_overflow_dont, /* complain_on_overflow */
3ce51288 531 ppc_elf_unhandled_reloc, /* special_function */
252b5132 532 "R_PPC_JMP_SLOT", /* name */
b34976b6 533 FALSE, /* partial_inplace */
252b5132
RH
534 0, /* src_mask */
535 0, /* dst_mask */
b34976b6 536 FALSE), /* pcrel_offset */
252b5132
RH
537
538 /* Used only by the dynamic linker. When the object is run, this
539 longword is set to the load address of the object, plus the
540 addend. */
541 HOWTO (R_PPC_RELATIVE, /* type */
542 0, /* rightshift */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
544 32, /* bitsize */
b34976b6 545 FALSE, /* pc_relative */
252b5132 546 0, /* bitpos */
86c95733 547 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_RELATIVE", /* name */
b34976b6 550 FALSE, /* partial_inplace */
252b5132
RH
551 0, /* src_mask */
552 0xffffffff, /* dst_mask */
b34976b6 553 FALSE), /* pcrel_offset */
252b5132
RH
554
555 /* Like R_PPC_REL24, but uses the value of the symbol within the
556 object rather than the final value. Normally used for
557 _GLOBAL_OFFSET_TABLE_. */
558 HOWTO (R_PPC_LOCAL24PC, /* type */
559 0, /* rightshift */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
561 26, /* bitsize */
b34976b6 562 TRUE, /* pc_relative */
252b5132
RH
563 0, /* bitpos */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC_LOCAL24PC", /* name */
b34976b6 567 FALSE, /* partial_inplace */
252b5132
RH
568 0, /* src_mask */
569 0x3fffffc, /* dst_mask */
b34976b6 570 TRUE), /* pcrel_offset */
252b5132
RH
571
572 /* Like R_PPC_ADDR32, but may be unaligned. */
573 HOWTO (R_PPC_UADDR32, /* type */
574 0, /* rightshift */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
576 32, /* bitsize */
b34976b6 577 FALSE, /* pc_relative */
252b5132 578 0, /* bitpos */
86c95733 579 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC_UADDR32", /* name */
b34976b6 582 FALSE, /* partial_inplace */
252b5132
RH
583 0, /* src_mask */
584 0xffffffff, /* dst_mask */
b34976b6 585 FALSE), /* pcrel_offset */
252b5132
RH
586
587 /* Like R_PPC_ADDR16, but may be unaligned. */
588 HOWTO (R_PPC_UADDR16, /* type */
589 0, /* rightshift */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
591 16, /* bitsize */
b34976b6 592 FALSE, /* pc_relative */
252b5132
RH
593 0, /* bitpos */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC_UADDR16", /* name */
b34976b6 597 FALSE, /* partial_inplace */
252b5132
RH
598 0, /* src_mask */
599 0xffff, /* dst_mask */
b34976b6 600 FALSE), /* pcrel_offset */
252b5132
RH
601
602 /* 32-bit PC relative */
603 HOWTO (R_PPC_REL32, /* type */
604 0, /* rightshift */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
606 32, /* bitsize */
b34976b6 607 TRUE, /* pc_relative */
252b5132 608 0, /* bitpos */
86c95733 609 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC_REL32", /* name */
b34976b6 612 FALSE, /* partial_inplace */
252b5132
RH
613 0, /* src_mask */
614 0xffffffff, /* dst_mask */
b34976b6 615 TRUE), /* pcrel_offset */
252b5132
RH
616
617 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 618 FIXME: not supported. */
252b5132
RH
619 HOWTO (R_PPC_PLT32, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
b34976b6 623 FALSE, /* pc_relative */
252b5132 624 0, /* bitpos */
86c95733 625 complain_overflow_dont, /* complain_on_overflow */
3ce51288 626 ppc_elf_unhandled_reloc, /* special_function */
252b5132 627 "R_PPC_PLT32", /* name */
b34976b6 628 FALSE, /* partial_inplace */
252b5132
RH
629 0, /* src_mask */
630 0, /* dst_mask */
b34976b6 631 FALSE), /* pcrel_offset */
252b5132
RH
632
633 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 634 FIXME: not supported. */
252b5132
RH
635 HOWTO (R_PPC_PLTREL32, /* type */
636 0, /* rightshift */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
638 32, /* bitsize */
b34976b6 639 TRUE, /* pc_relative */
252b5132 640 0, /* bitpos */
86c95733 641 complain_overflow_dont, /* complain_on_overflow */
3ce51288 642 ppc_elf_unhandled_reloc, /* special_function */
252b5132 643 "R_PPC_PLTREL32", /* name */
b34976b6 644 FALSE, /* partial_inplace */
252b5132
RH
645 0, /* src_mask */
646 0, /* dst_mask */
b34976b6 647 TRUE), /* pcrel_offset */
252b5132
RH
648
649 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
650 the symbol. */
651 HOWTO (R_PPC_PLT16_LO, /* type */
652 0, /* rightshift */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
654 16, /* bitsize */
b34976b6 655 FALSE, /* pc_relative */
252b5132
RH
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
3ce51288 658 ppc_elf_unhandled_reloc, /* special_function */
252b5132 659 "R_PPC_PLT16_LO", /* name */
b34976b6 660 FALSE, /* partial_inplace */
252b5132
RH
661 0, /* src_mask */
662 0xffff, /* dst_mask */
b34976b6 663 FALSE), /* pcrel_offset */
252b5132
RH
664
665 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
666 the symbol. */
667 HOWTO (R_PPC_PLT16_HI, /* type */
668 16, /* rightshift */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
670 16, /* bitsize */
b34976b6 671 FALSE, /* pc_relative */
252b5132 672 0, /* bitpos */
86c95733 673 complain_overflow_dont, /* complain_on_overflow */
3ce51288 674 ppc_elf_unhandled_reloc, /* special_function */
252b5132 675 "R_PPC_PLT16_HI", /* name */
b34976b6 676 FALSE, /* partial_inplace */
252b5132
RH
677 0, /* src_mask */
678 0xffff, /* dst_mask */
b34976b6 679 FALSE), /* pcrel_offset */
252b5132
RH
680
681 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
682 the symbol. */
683 HOWTO (R_PPC_PLT16_HA, /* type */
684 16, /* rightshift */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
686 16, /* bitsize */
b34976b6 687 FALSE, /* pc_relative */
252b5132 688 0, /* bitpos */
86c95733 689 complain_overflow_dont, /* complain_on_overflow */
3ce51288 690 ppc_elf_unhandled_reloc, /* special_function */
252b5132 691 "R_PPC_PLT16_HA", /* name */
b34976b6 692 FALSE, /* partial_inplace */
252b5132
RH
693 0, /* src_mask */
694 0xffff, /* dst_mask */
b34976b6 695 FALSE), /* pcrel_offset */
252b5132
RH
696
697 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
698 small data items. */
699 HOWTO (R_PPC_SDAREL16, /* type */
700 0, /* rightshift */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
b34976b6 703 FALSE, /* pc_relative */
252b5132
RH
704 0, /* bitpos */
705 complain_overflow_signed, /* complain_on_overflow */
3ce51288 706 ppc_elf_unhandled_reloc, /* special_function */
252b5132 707 "R_PPC_SDAREL16", /* name */
b34976b6 708 FALSE, /* partial_inplace */
252b5132
RH
709 0, /* src_mask */
710 0xffff, /* dst_mask */
b34976b6 711 FALSE), /* pcrel_offset */
252b5132 712
c061c2d8 713 /* 16-bit section relative relocation. */
252b5132
RH
714 HOWTO (R_PPC_SECTOFF, /* type */
715 0, /* rightshift */
c061c2d8
AM
716 1, /* size (0 = byte, 1 = short, 2 = long) */
717 16, /* bitsize */
b34976b6 718 FALSE, /* pc_relative */
252b5132 719 0, /* bitpos */
86c95733 720 complain_overflow_signed, /* complain_on_overflow */
3ce51288 721 ppc_elf_unhandled_reloc, /* special_function */
252b5132 722 "R_PPC_SECTOFF", /* name */
b34976b6 723 FALSE, /* partial_inplace */
252b5132 724 0, /* src_mask */
c061c2d8 725 0xffff, /* dst_mask */
b34976b6 726 FALSE), /* pcrel_offset */
252b5132 727
c3668558 728 /* 16-bit lower half section relative relocation. */
252b5132
RH
729 HOWTO (R_PPC_SECTOFF_LO, /* type */
730 0, /* rightshift */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
732 16, /* bitsize */
b34976b6 733 FALSE, /* pc_relative */
252b5132
RH
734 0, /* bitpos */
735 complain_overflow_dont, /* complain_on_overflow */
3ce51288 736 ppc_elf_unhandled_reloc, /* special_function */
252b5132 737 "R_PPC_SECTOFF_LO", /* name */
b34976b6 738 FALSE, /* partial_inplace */
252b5132
RH
739 0, /* src_mask */
740 0xffff, /* dst_mask */
b34976b6 741 FALSE), /* pcrel_offset */
252b5132 742
c3668558 743 /* 16-bit upper half section relative relocation. */
252b5132
RH
744 HOWTO (R_PPC_SECTOFF_HI, /* type */
745 16, /* rightshift */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
747 16, /* bitsize */
b34976b6 748 FALSE, /* pc_relative */
252b5132 749 0, /* bitpos */
86c95733 750 complain_overflow_dont, /* complain_on_overflow */
3ce51288 751 ppc_elf_unhandled_reloc, /* special_function */
252b5132 752 "R_PPC_SECTOFF_HI", /* name */
b34976b6 753 FALSE, /* partial_inplace */
252b5132
RH
754 0, /* src_mask */
755 0xffff, /* dst_mask */
b34976b6 756 FALSE), /* pcrel_offset */
252b5132 757
c3668558 758 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH
759 HOWTO (R_PPC_SECTOFF_HA, /* type */
760 16, /* rightshift */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
762 16, /* bitsize */
b34976b6 763 FALSE, /* pc_relative */
252b5132 764 0, /* bitpos */
86c95733 765 complain_overflow_dont, /* complain_on_overflow */
3ce51288 766 ppc_elf_unhandled_reloc, /* special_function */
252b5132 767 "R_PPC_SECTOFF_HA", /* name */
b34976b6 768 FALSE, /* partial_inplace */
252b5132
RH
769 0, /* src_mask */
770 0xffff, /* dst_mask */
b34976b6 771 FALSE), /* pcrel_offset */
252b5132 772
727fc41e 773 /* Marker relocs for TLS. */
7619e7c7 774 HOWTO (R_PPC_TLS,
252b5132
RH
775 0, /* rightshift */
776 2, /* size (0 = byte, 1 = short, 2 = long) */
777 32, /* bitsize */
b34976b6 778 FALSE, /* pc_relative */
252b5132 779 0, /* bitpos */
7619e7c7 780 complain_overflow_dont, /* complain_on_overflow */
252b5132 781 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM
782 "R_PPC_TLS", /* name */
783 FALSE, /* partial_inplace */
784 0, /* src_mask */
785 0, /* dst_mask */
786 FALSE), /* pcrel_offset */
787
727fc41e
AM
788 HOWTO (R_PPC_TLSGD,
789 0, /* rightshift */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
791 32, /* bitsize */
792 FALSE, /* pc_relative */
793 0, /* bitpos */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC_TLSGD", /* name */
797 FALSE, /* partial_inplace */
798 0, /* src_mask */
799 0, /* dst_mask */
800 FALSE), /* pcrel_offset */
801
802 HOWTO (R_PPC_TLSLD,
803 0, /* rightshift */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
805 32, /* bitsize */
806 FALSE, /* pc_relative */
807 0, /* bitpos */
808 complain_overflow_dont, /* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_PPC_TLSLD", /* name */
811 FALSE, /* partial_inplace */
812 0, /* src_mask */
813 0, /* dst_mask */
814 FALSE), /* pcrel_offset */
815
7619e7c7
AM
816 /* Computes the load module index of the load module that contains the
817 definition of its TLS sym. */
818 HOWTO (R_PPC_DTPMOD32,
819 0, /* rightshift */
820 2, /* size (0 = byte, 1 = short, 2 = long) */
821 32, /* bitsize */
822 FALSE, /* pc_relative */
823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPMOD32", /* name */
b34976b6 827 FALSE, /* partial_inplace */
252b5132
RH
828 0, /* src_mask */
829 0xffffffff, /* dst_mask */
b34976b6 830 FALSE), /* pcrel_offset */
252b5132 831
7619e7c7
AM
832 /* Computes a dtv-relative displacement, the difference between the value
833 of sym+add and the base address of the thread-local storage block that
834 contains the definition of sym, minus 0x8000. */
835 HOWTO (R_PPC_DTPREL32,
836 0, /* rightshift */
837 2, /* size (0 = byte, 1 = short, 2 = long) */
838 32, /* bitsize */
839 FALSE, /* pc_relative */
840 0, /* bitpos */
841 complain_overflow_dont, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL32", /* name */
844 FALSE, /* partial_inplace */
845 0, /* src_mask */
846 0xffffffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
848
849 /* A 16 bit dtprel reloc. */
850 HOWTO (R_PPC_DTPREL16,
252b5132
RH
851 0, /* rightshift */
852 1, /* size (0 = byte, 1 = short, 2 = long) */
853 16, /* bitsize */
b34976b6 854 FALSE, /* pc_relative */
252b5132 855 0, /* bitpos */
7619e7c7
AM
856 complain_overflow_signed, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16", /* name */
b34976b6 859 FALSE, /* partial_inplace */
252b5132
RH
860 0, /* src_mask */
861 0xffff, /* dst_mask */
b34976b6 862 FALSE), /* pcrel_offset */
252b5132 863
7619e7c7
AM
864 /* Like DTPREL16, but no overflow. */
865 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH
866 0, /* rightshift */
867 1, /* size (0 = byte, 1 = short, 2 = long) */
868 16, /* bitsize */
b34976b6 869 FALSE, /* pc_relative */
252b5132 870 0, /* bitpos */
7619e7c7
AM
871 complain_overflow_dont, /* complain_on_overflow */
872 ppc_elf_unhandled_reloc, /* special_function */
873 "R_PPC_DTPREL16_LO", /* name */
b34976b6 874 FALSE, /* partial_inplace */
252b5132
RH
875 0, /* src_mask */
876 0xffff, /* dst_mask */
b34976b6 877 FALSE), /* pcrel_offset */
252b5132 878
7619e7c7
AM
879 /* Like DTPREL16_LO, but next higher group of 16 bits. */
880 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH
881 16, /* rightshift */
882 1, /* size (0 = byte, 1 = short, 2 = long) */
883 16, /* bitsize */
b34976b6 884 FALSE, /* pc_relative */
252b5132
RH
885 0, /* bitpos */
886 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
887 ppc_elf_unhandled_reloc, /* special_function */
888 "R_PPC_DTPREL16_HI", /* name */
b34976b6 889 FALSE, /* partial_inplace */
252b5132
RH
890 0, /* src_mask */
891 0xffff, /* dst_mask */
b34976b6 892 FALSE), /* pcrel_offset */
252b5132 893
7619e7c7
AM
894 /* Like DTPREL16_HI, but adjust for low 16 bits. */
895 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH
896 16, /* rightshift */
897 1, /* size (0 = byte, 1 = short, 2 = long) */
898 16, /* bitsize */
b34976b6 899 FALSE, /* pc_relative */
252b5132
RH
900 0, /* bitpos */
901 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
902 ppc_elf_unhandled_reloc, /* special_function */
903 "R_PPC_DTPREL16_HA", /* name */
b34976b6 904 FALSE, /* partial_inplace */
252b5132
RH
905 0, /* src_mask */
906 0xffff, /* dst_mask */
b34976b6 907 FALSE), /* pcrel_offset */
252b5132 908
7619e7c7
AM
909 /* Computes a tp-relative displacement, the difference between the value of
910 sym+add and the value of the thread pointer (r13). */
911 HOWTO (R_PPC_TPREL32,
912 0, /* rightshift */
913 2, /* size (0 = byte, 1 = short, 2 = long) */
914 32, /* bitsize */
915 FALSE, /* pc_relative */
916 0, /* bitpos */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL32", /* name */
920 FALSE, /* partial_inplace */
921 0, /* src_mask */
922 0xffffffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
924
925 /* A 16 bit tprel reloc. */
926 HOWTO (R_PPC_TPREL16,
252b5132
RH
927 0, /* rightshift */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
929 16, /* bitsize */
b34976b6 930 FALSE, /* pc_relative */
252b5132 931 0, /* bitpos */
7619e7c7
AM
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16", /* name */
b34976b6 935 FALSE, /* partial_inplace */
252b5132
RH
936 0, /* src_mask */
937 0xffff, /* dst_mask */
b34976b6 938 FALSE), /* pcrel_offset */
252b5132 939
7619e7c7
AM
940 /* Like TPREL16, but no overflow. */
941 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH
942 0, /* rightshift */
943 1, /* size (0 = byte, 1 = short, 2 = long) */
944 16, /* bitsize */
b34976b6 945 FALSE, /* pc_relative */
252b5132 946 0, /* bitpos */
7619e7c7
AM
947 complain_overflow_dont, /* complain_on_overflow */
948 ppc_elf_unhandled_reloc, /* special_function */
949 "R_PPC_TPREL16_LO", /* name */
b34976b6 950 FALSE, /* partial_inplace */
252b5132
RH
951 0, /* src_mask */
952 0xffff, /* dst_mask */
b34976b6 953 FALSE), /* pcrel_offset */
252b5132 954
7619e7c7
AM
955 /* Like TPREL16_LO, but next higher group of 16 bits. */
956 HOWTO (R_PPC_TPREL16_HI,
957 16, /* rightshift */
958 1, /* size (0 = byte, 1 = short, 2 = long) */
959 16, /* bitsize */
960 FALSE, /* pc_relative */
961 0, /* bitpos */
962 complain_overflow_dont, /* complain_on_overflow */
963 ppc_elf_unhandled_reloc, /* special_function */
964 "R_PPC_TPREL16_HI", /* name */
965 FALSE, /* partial_inplace */
966 0, /* src_mask */
967 0xffff, /* dst_mask */
968 FALSE), /* pcrel_offset */
969
970 /* Like TPREL16_HI, but adjust for low 16 bits. */
971 HOWTO (R_PPC_TPREL16_HA,
972 16, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
975 FALSE, /* pc_relative */
976 0, /* bitpos */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_TPREL16_HA", /* name */
980 FALSE, /* partial_inplace */
981 0, /* src_mask */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
984
985 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
986 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
987 to the first entry. */
988 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH
989 0, /* rightshift */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
991 16, /* bitsize */
b34976b6 992 FALSE, /* pc_relative */
252b5132
RH
993 0, /* bitpos */
994 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 997 FALSE, /* partial_inplace */
252b5132
RH
998 0, /* src_mask */
999 0xffff, /* dst_mask */
b34976b6 1000 FALSE), /* pcrel_offset */
252b5132 1001
7619e7c7
AM
1002 /* Like GOT_TLSGD16, but no overflow. */
1003 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 1004 0, /* rightshift */
7619e7c7 1005 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 1006 16, /* bitsize */
b34976b6 1007 FALSE, /* pc_relative */
252b5132 1008 0, /* bitpos */
7619e7c7
AM
1009 complain_overflow_dont, /* complain_on_overflow */
1010 ppc_elf_unhandled_reloc, /* special_function */
1011 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 1012 FALSE, /* partial_inplace */
252b5132
RH
1013 0, /* src_mask */
1014 0xffff, /* dst_mask */
b34976b6 1015 FALSE), /* pcrel_offset */
252b5132 1016
7619e7c7
AM
1017 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1018 HOWTO (R_PPC_GOT_TLSGD16_HI,
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 16, /* bitsize */
1022 FALSE, /* pc_relative */
1023 0, /* bitpos */
1024 complain_overflow_dont, /* complain_on_overflow */
1025 ppc_elf_unhandled_reloc, /* special_function */
1026 "R_PPC_GOT_TLSGD16_HI", /* name */
1027 FALSE, /* partial_inplace */
1028 0, /* src_mask */
1029 0xffff, /* dst_mask */
1030 FALSE), /* pcrel_offset */
252b5132 1031
7619e7c7
AM
1032 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1033 HOWTO (R_PPC_GOT_TLSGD16_HA,
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 16, /* bitsize */
1037 FALSE, /* pc_relative */
1038 0, /* bitpos */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSGD16_HA", /* name */
1042 FALSE, /* partial_inplace */
1043 0, /* src_mask */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1046
1047 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1048 with values (sym+add)@dtpmod and zero, and computes the offset to the
1049 first entry. */
1050 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH
1051 0, /* rightshift */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1053 16, /* bitsize */
7619e7c7 1054 FALSE, /* pc_relative */
252b5132
RH
1055 0, /* bitpos */
1056 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1059 FALSE, /* partial_inplace */
252b5132
RH
1060 0, /* src_mask */
1061 0xffff, /* dst_mask */
b34976b6 1062 FALSE), /* pcrel_offset */
252b5132 1063
7619e7c7
AM
1064 /* Like GOT_TLSLD16, but no overflow. */
1065 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1066 0, /* rightshift */
7619e7c7
AM
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 16, /* bitsize */
b34976b6 1069 FALSE, /* pc_relative */
252b5132
RH
1070 0, /* bitpos */
1071 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1072 ppc_elf_unhandled_reloc, /* special_function */
1073 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1074 FALSE, /* partial_inplace */
252b5132 1075 0, /* src_mask */
7619e7c7 1076 0xffff, /* dst_mask */
b34976b6 1077 FALSE), /* pcrel_offset */
252b5132 1078
7619e7c7
AM
1079 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1080 HOWTO (R_PPC_GOT_TLSLD16_HI,
1081 16, /* rightshift */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 16, /* bitsize */
b34976b6 1084 FALSE, /* pc_relative */
252b5132
RH
1085 0, /* bitpos */
1086 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1087 ppc_elf_unhandled_reloc, /* special_function */
1088 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1089 FALSE, /* partial_inplace */
252b5132 1090 0, /* src_mask */
7619e7c7 1091 0xffff, /* dst_mask */
b34976b6 1092 FALSE), /* pcrel_offset */
252b5132 1093
7619e7c7
AM
1094 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1095 HOWTO (R_PPC_GOT_TLSLD16_HA,
1096 16, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 ppc_elf_unhandled_reloc, /* special_function */
1103 "R_PPC_GOT_TLSLD16_HA", /* name */
1104 FALSE, /* partial_inplace */
1105 0, /* src_mask */
1106 0xffff, /* dst_mask */
1107 FALSE), /* pcrel_offset */
1108
1109 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1110 the offset to the entry. */
1111 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH
1112 0, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 16, /* bitsize */
b34976b6 1115 FALSE, /* pc_relative */
252b5132
RH
1116 0, /* bitpos */
1117 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1120 FALSE, /* partial_inplace */
252b5132
RH
1121 0, /* src_mask */
1122 0xffff, /* dst_mask */
b34976b6 1123 FALSE), /* pcrel_offset */
252b5132 1124
7619e7c7
AM
1125 /* Like GOT_DTPREL16, but no overflow. */
1126 HOWTO (R_PPC_GOT_DTPREL16_LO,
1127 0, /* rightshift */
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 ppc_elf_unhandled_reloc, /* special_function */
1134 "R_PPC_GOT_DTPREL16_LO", /* name */
1135 FALSE, /* partial_inplace */
1136 0, /* src_mask */
1137 0xffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
252b5132 1139
7619e7c7
AM
1140 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1141 HOWTO (R_PPC_GOT_DTPREL16_HI,
1142 16, /* rightshift */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 16, /* bitsize */
1145 FALSE, /* pc_relative */
1146 0, /* bitpos */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 ppc_elf_unhandled_reloc, /* special_function */
1149 "R_PPC_GOT_DTPREL16_HI", /* name */
1150 FALSE, /* partial_inplace */
1151 0, /* src_mask */
1152 0xffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
252b5132 1154
7619e7c7
AM
1155 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1156 HOWTO (R_PPC_GOT_DTPREL16_HA,
1157 16, /* rightshift */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 16, /* bitsize */
1160 FALSE, /* pc_relative */
1161 0, /* bitpos */
1162 complain_overflow_dont, /* complain_on_overflow */
1163 ppc_elf_unhandled_reloc, /* special_function */
1164 "R_PPC_GOT_DTPREL16_HA", /* name */
1165 FALSE, /* partial_inplace */
1166 0, /* src_mask */
1167 0xffff, /* dst_mask */
1168 FALSE), /* pcrel_offset */
c3668558 1169
7619e7c7
AM
1170 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1171 offset to the entry. */
1172 HOWTO (R_PPC_GOT_TPREL16,
1173 0, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 16, /* bitsize */
1176 FALSE, /* pc_relative */
1177 0, /* bitpos */
1178 complain_overflow_signed, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16", /* name */
1181 FALSE, /* partial_inplace */
1182 0, /* src_mask */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1185
1186 /* Like GOT_TPREL16, but no overflow. */
1187 HOWTO (R_PPC_GOT_TPREL16_LO,
1188 0, /* rightshift */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 16, /* bitsize */
1191 FALSE, /* pc_relative */
1192 0, /* bitpos */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc_elf_unhandled_reloc, /* special_function */
1195 "R_PPC_GOT_TPREL16_LO", /* name */
1196 FALSE, /* partial_inplace */
1197 0, /* src_mask */
1198 0xffff, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1200
1201 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1202 HOWTO (R_PPC_GOT_TPREL16_HI,
1203 16, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 16, /* bitsize */
1206 FALSE, /* pc_relative */
1207 0, /* bitpos */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc_elf_unhandled_reloc, /* special_function */
1210 "R_PPC_GOT_TPREL16_HI", /* name */
1211 FALSE, /* partial_inplace */
1212 0, /* src_mask */
1213 0xffff, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1215
1216 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1217 HOWTO (R_PPC_GOT_TPREL16_HA,
1218 16, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 16, /* bitsize */
1221 FALSE, /* pc_relative */
1222 0, /* bitpos */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc_elf_unhandled_reloc, /* special_function */
1225 "R_PPC_GOT_TPREL16_HA", /* name */
1226 FALSE, /* partial_inplace */
1227 0, /* src_mask */
1228 0xffff, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1230
1231 /* The remaining relocs are from the Embedded ELF ABI, and are not
1232 in the SVR4 ELF ABI. */
1233
1234 /* 32 bit value resulting from the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR32, /* type */
1236 0, /* rightshift */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1238 32, /* bitsize */
1239 FALSE, /* pc_relative */
1240 0, /* bitpos */
86c95733 1241 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1242 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1243 "R_PPC_EMB_NADDR32", /* name */
1244 FALSE, /* partial_inplace */
1245 0, /* src_mask */
1246 0xffffffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1248
1249 /* 16 bit value resulting from the addend minus the symbol. */
1250 HOWTO (R_PPC_EMB_NADDR16, /* type */
1251 0, /* rightshift */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1253 16, /* bitsize */
1254 FALSE, /* pc_relative */
1255 0, /* bitpos */
86c95733 1256 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1257 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1258 "R_PPC_EMB_NADDR16", /* name */
1259 FALSE, /* partial_inplace */
1260 0, /* src_mask */
1261 0xffff, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1263
1264 /* 16 bit value resulting from the addend minus the symbol. */
1265 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1266 0, /* rightshift */
1267 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 16, /* bitsize */
1269 FALSE, /* pc_relative */
1270 0, /* bitpos */
1271 complain_overflow_dont,/* complain_on_overflow */
3ce51288 1272 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1273 "R_PPC_EMB_ADDR16_LO", /* name */
1274 FALSE, /* partial_inplace */
1275 0, /* src_mask */
1276 0xffff, /* dst_mask */
1277 FALSE), /* pcrel_offset */
1278
1279 /* The high order 16 bits of the addend minus the symbol. */
1280 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1287 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1288 "R_PPC_EMB_NADDR16_HI", /* name */
1289 FALSE, /* partial_inplace */
1290 0, /* src_mask */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 /* The high order 16 bits of the result of the addend minus the address,
1295 plus 1 if the contents of the low 16 bits, treated as a signed number,
1296 is negative. */
1297 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1298 16, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 16, /* bitsize */
1301 FALSE, /* pc_relative */
1302 0, /* bitpos */
1303 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1304 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1305 "R_PPC_EMB_NADDR16_HA", /* name */
1306 FALSE, /* partial_inplace */
1307 0, /* src_mask */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1310
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata section, and returning the offset from
1313 _SDA_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDAI16, /* type */
1315 0, /* rightshift */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 16, /* bitsize */
1318 FALSE, /* pc_relative */
1319 0, /* bitpos */
bd6c6e2b 1320 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1321 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1322 "R_PPC_EMB_SDAI16", /* name */
1323 FALSE, /* partial_inplace */
1324 0, /* src_mask */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1327
1328 /* 16 bit value resulting from allocating a 4 byte word to hold an
1329 address in the .sdata2 section, and returning the offset from
1330 _SDA2_BASE_ for that relocation. */
1331 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1332 0, /* rightshift */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 16, /* bitsize */
1335 FALSE, /* pc_relative */
1336 0, /* bitpos */
bd6c6e2b 1337 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1338 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1339 "R_PPC_EMB_SDA2I16", /* name */
1340 FALSE, /* partial_inplace */
1341 0, /* src_mask */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1344
1345 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1346 small data items. */
1347 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1348 0, /* rightshift */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 16, /* bitsize */
1351 FALSE, /* pc_relative */
1352 0, /* bitpos */
1353 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1354 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1355 "R_PPC_EMB_SDA2REL", /* name */
1356 FALSE, /* partial_inplace */
1357 0, /* src_mask */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1362 signed offset from the appropriate base, and filling in the register
1363 field with the appropriate register (0, 2, or 13). */
1364 HOWTO (R_PPC_EMB_SDA21, /* type */
1365 0, /* rightshift */
1366 2, /* size (0 = byte, 1 = short, 2 = long) */
1367 16, /* bitsize */
1368 FALSE, /* pc_relative */
1369 0, /* bitpos */
1370 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1371 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1372 "R_PPC_EMB_SDA21", /* name */
1373 FALSE, /* partial_inplace */
1374 0, /* src_mask */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1377
1378 /* Relocation not handled: R_PPC_EMB_MRKREF */
1379 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1380 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1382 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1383 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1384
1385 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1386 in the 16 bit signed offset from the appropriate base, and filling in the
1387 register field with the appropriate register (0, 2, or 13). */
1388 HOWTO (R_PPC_EMB_RELSDA, /* type */
1389 0, /* rightshift */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1391 16, /* bitsize */
ddfd6795 1392 FALSE, /* pc_relative */
25dbc73a
AM
1393 0, /* bitpos */
1394 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1395 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1396 "R_PPC_EMB_RELSDA", /* name */
1397 FALSE, /* partial_inplace */
1398 0, /* src_mask */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1401
b9c361e0
JL
1402 /* A relative 8 bit branch. */
1403 HOWTO (R_PPC_VLE_REL8, /* type */
1404 1, /* rightshift */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1406 8, /* bitsize */
1407 TRUE, /* pc_relative */
1408 0, /* bitpos */
1409 complain_overflow_signed, /* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 "R_PPC_VLE_REL8", /* name */
1412 FALSE, /* partial_inplace */
1413 0, /* src_mask */
1414 0xff, /* dst_mask */
1415 TRUE), /* pcrel_offset */
68ffbac6 1416
b9c361e0
JL
1417 /* A relative 15 bit branch. */
1418 HOWTO (R_PPC_VLE_REL15, /* type */
1419 1, /* rightshift */
1420 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 15, /* bitsize */
1422 TRUE, /* pc_relative */
1423 1, /* bitpos */
1424 complain_overflow_signed, /* complain_on_overflow */
1425 bfd_elf_generic_reloc, /* special_function */
1426 "R_PPC_VLE_REL15", /* name */
1427 FALSE, /* partial_inplace */
1428 0, /* src_mask */
dfdaec14 1429 0xfffe, /* dst_mask */
b9c361e0
JL
1430 TRUE), /* pcrel_offset */
1431
68ffbac6 1432 /* A relative 24 bit branch. */
b9c361e0
JL
1433 HOWTO (R_PPC_VLE_REL24, /* type */
1434 1, /* rightshift */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 24, /* bitsize */
1437 TRUE, /* pc_relative */
1438 1, /* bitpos */
1439 complain_overflow_signed, /* complain_on_overflow */
1440 bfd_elf_generic_reloc, /* special_function */
1441 "R_PPC_VLE_REL24", /* name */
1442 FALSE, /* partial_inplace */
1443 0, /* src_mask */
1444 0x1fffffe, /* dst_mask */
1445 TRUE), /* pcrel_offset */
1446
1447 /* The 16 LSBS in split16a format. */
1448 HOWTO (R_PPC_VLE_LO16A, /* type */
1449 0, /* rightshift */
1450 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1451 16, /* bitsize */
bdaacd3a 1452 FALSE, /* pc_relative */
b9c361e0 1453 0, /* bitpos */
86c95733 1454 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1455 ppc_elf_unhandled_reloc, /* special_function */
b9c361e0
JL
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE, /* partial_inplace */
1458 0, /* src_mask */
08dc996f 1459 0x1f07ff, /* dst_mask */
b9c361e0
JL
1460 FALSE), /* pcrel_offset */
1461
1462 /* The 16 LSBS in split16d format. */
1463 HOWTO (R_PPC_VLE_LO16D, /* type */
1464 0, /* rightshift */
1465 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1466 16, /* bitsize */
b9c361e0
JL
1467 FALSE, /* pc_relative */
1468 0, /* bitpos */
86c95733 1469 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1470 ppc_elf_unhandled_reloc, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
b9c361e0
JL
1472 FALSE, /* partial_inplace */
1473 0, /* src_mask */
5499c7c7 1474 0x3e007ff, /* dst_mask */
b9c361e0
JL
1475 FALSE), /* pcrel_offset */
1476
1477 /* Bits 16-31 split16a format. */
1478 HOWTO (R_PPC_VLE_HI16A, /* type */
86c95733 1479 16, /* rightshift */
b9c361e0 1480 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1481 16, /* bitsize */
b9c361e0
JL
1482 FALSE, /* pc_relative */
1483 0, /* bitpos */
86c95733 1484 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1485 ppc_elf_unhandled_reloc, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
b9c361e0
JL
1487 FALSE, /* partial_inplace */
1488 0, /* src_mask */
08dc996f 1489 0x1f07ff, /* dst_mask */
b9c361e0
JL
1490 FALSE), /* pcrel_offset */
1491
1492 /* Bits 16-31 split16d format. */
1493 HOWTO (R_PPC_VLE_HI16D, /* type */
86c95733 1494 16, /* rightshift */
b9c361e0 1495 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1496 16, /* bitsize */
b9c361e0
JL
1497 FALSE, /* pc_relative */
1498 0, /* bitpos */
86c95733 1499 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1500 ppc_elf_unhandled_reloc, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
b9c361e0
JL
1502 FALSE, /* partial_inplace */
1503 0, /* src_mask */
5499c7c7 1504 0x3e007ff, /* dst_mask */
b9c361e0
JL
1505 FALSE), /* pcrel_offset */
1506
1507 /* Bits 16-31 (High Adjusted) in split16a format. */
1508 HOWTO (R_PPC_VLE_HA16A, /* type */
86c95733 1509 16, /* rightshift */
b9c361e0 1510 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1511 16, /* bitsize */
b9c361e0
JL
1512 FALSE, /* pc_relative */
1513 0, /* bitpos */
86c95733 1514 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1515 ppc_elf_unhandled_reloc, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
b9c361e0
JL
1517 FALSE, /* partial_inplace */
1518 0, /* src_mask */
08dc996f 1519 0x1f07ff, /* dst_mask */
b9c361e0
JL
1520 FALSE), /* pcrel_offset */
1521
1522 /* Bits 16-31 (High Adjusted) in split16d format. */
1523 HOWTO (R_PPC_VLE_HA16D, /* type */
86c95733 1524 16, /* rightshift */
b9c361e0 1525 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1526 16, /* bitsize */
b9c361e0
JL
1527 FALSE, /* pc_relative */
1528 0, /* bitpos */
86c95733 1529 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1530 ppc_elf_unhandled_reloc, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
b9c361e0
JL
1532 FALSE, /* partial_inplace */
1533 0, /* src_mask */
5499c7c7 1534 0x3e007ff, /* dst_mask */
b9c361e0
JL
1535 FALSE), /* pcrel_offset */
1536
86c95733
AM
1537 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1538 instructions. If the register base is 0 then the linker changes
1539 the e_add16i to an e_li instruction. */
1540 HOWTO (R_PPC_VLE_SDA21, /* type */
b9c361e0
JL
1541 0, /* rightshift */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1543 16, /* bitsize */
b9c361e0
JL
1544 FALSE, /* pc_relative */
1545 0, /* bitpos */
86c95733 1546 complain_overflow_signed, /* complain_on_overflow */
3ce51288
AM
1547 ppc_elf_unhandled_reloc, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
b9c361e0
JL
1549 FALSE, /* partial_inplace */
1550 0, /* src_mask */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1553
86c95733 1554 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
b9c361e0
JL
1555 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1556 0, /* rightshift */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1558 16, /* bitsize */
b9c361e0
JL
1559 FALSE, /* pc_relative */
1560 0, /* bitpos */
86c95733 1561 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1562 ppc_elf_unhandled_reloc, /* special_function */
b9c361e0
JL
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE, /* partial_inplace */
1565 0, /* src_mask */
86c95733 1566 0xffff, /* dst_mask */
b9c361e0
JL
1567 FALSE), /* pcrel_offset */
1568
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1571 0, /* rightshift */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1573 16, /* bitsize */
b9c361e0
JL
1574 FALSE, /* pc_relative */
1575 0, /* bitpos */
3ce51288
AM
1576 complain_overflow_dont, /* complain_on_overflow */
1577 ppc_elf_unhandled_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
b9c361e0
JL
1579 FALSE, /* partial_inplace */
1580 0, /* src_mask */
08dc996f 1581 0x1f07ff, /* dst_mask */
b9c361e0
JL
1582 FALSE), /* pcrel_offset */
1583
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
b9c361e0
JL
1585 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1586 0, /* rightshift */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1588 16, /* bitsize */
b9c361e0
JL
1589 FALSE, /* pc_relative */
1590 0, /* bitpos */
3ce51288
AM
1591 complain_overflow_dont, /* complain_on_overflow */
1592 ppc_elf_unhandled_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
b9c361e0
JL
1594 FALSE, /* partial_inplace */
1595 0, /* src_mask */
5499c7c7 1596 0x3e007ff, /* dst_mask */
b9c361e0
JL
1597 FALSE), /* pcrel_offset */
1598
1599 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
3ce51288 1600 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
86c95733 1601 16, /* rightshift */
b9c361e0 1602 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1603 16, /* bitsize */
b9c361e0
JL
1604 FALSE, /* pc_relative */
1605 0, /* bitpos */
3ce51288
AM
1606 complain_overflow_dont, /* complain_on_overflow */
1607 ppc_elf_unhandled_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
b9c361e0
JL
1609 FALSE, /* partial_inplace */
1610 0, /* src_mask */
08dc996f 1611 0x1f07ff, /* dst_mask */
b9c361e0
JL
1612 FALSE), /* pcrel_offset */
1613
1614 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
3ce51288 1615 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
86c95733 1616 16, /* rightshift */
b9c361e0 1617 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1618 16, /* bitsize */
b9c361e0
JL
1619 FALSE, /* pc_relative */
1620 0, /* bitpos */
3ce51288
AM
1621 complain_overflow_dont, /* complain_on_overflow */
1622 ppc_elf_unhandled_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
b9c361e0
JL
1624 FALSE, /* partial_inplace */
1625 0, /* src_mask */
5499c7c7 1626 0x3e007ff, /* dst_mask */
b9c361e0
JL
1627 FALSE), /* pcrel_offset */
1628
1629 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
3ce51288 1630 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
86c95733 1631 16, /* rightshift */
b9c361e0 1632 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1633 16, /* bitsize */
b9c361e0
JL
1634 FALSE, /* pc_relative */
1635 0, /* bitpos */
3ce51288
AM
1636 complain_overflow_dont, /* complain_on_overflow */
1637 ppc_elf_unhandled_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
b9c361e0
JL
1639 FALSE, /* partial_inplace */
1640 0, /* src_mask */
08dc996f 1641 0x1f07ff, /* dst_mask */
b9c361e0
JL
1642 FALSE), /* pcrel_offset */
1643
1644 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
3ce51288 1645 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
86c95733 1646 16, /* rightshift */
b9c361e0 1647 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1648 16, /* bitsize */
b9c361e0
JL
1649 FALSE, /* pc_relative */
1650 0, /* bitpos */
3ce51288
AM
1651 complain_overflow_dont, /* complain_on_overflow */
1652 ppc_elf_unhandled_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
b9c361e0
JL
1654 FALSE, /* partial_inplace */
1655 0, /* src_mask */
5499c7c7 1656 0x3e007ff, /* dst_mask */
b9c361e0
JL
1657 FALSE), /* pcrel_offset */
1658
e054468f
AM
1659 HOWTO (R_PPC_IRELATIVE, /* type */
1660 0, /* rightshift */
1661 2, /* size (0 = byte, 1 = short, 2 = long) */
1662 32, /* bitsize */
1663 FALSE, /* pc_relative */
1664 0, /* bitpos */
86c95733 1665 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1666 ppc_elf_unhandled_reloc, /* special_function */
e054468f
AM
1667 "R_PPC_IRELATIVE", /* name */
1668 FALSE, /* partial_inplace */
1669 0, /* src_mask */
1670 0xffffffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1672
d7128ce4
AM
1673 /* A 16 bit relative relocation. */
1674 HOWTO (R_PPC_REL16, /* type */
1675 0, /* rightshift */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1677 16, /* bitsize */
1678 TRUE, /* pc_relative */
1679 0, /* bitpos */
86c95733 1680 complain_overflow_signed, /* complain_on_overflow */
d7128ce4
AM
1681 bfd_elf_generic_reloc, /* special_function */
1682 "R_PPC_REL16", /* name */
1683 FALSE, /* partial_inplace */
1684 0, /* src_mask */
1685 0xffff, /* dst_mask */
1686 TRUE), /* pcrel_offset */
1687
1688 /* A 16 bit relative relocation without overflow. */
1689 HOWTO (R_PPC_REL16_LO, /* type */
1690 0, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 16, /* bitsize */
1693 TRUE, /* pc_relative */
1694 0, /* bitpos */
1695 complain_overflow_dont,/* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16_LO", /* name */
1698 FALSE, /* partial_inplace */
1699 0, /* src_mask */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1702
1703 /* The high order 16 bits of a relative address. */
1704 HOWTO (R_PPC_REL16_HI, /* type */
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 16, /* bitsize */
1708 TRUE, /* pc_relative */
1709 0, /* bitpos */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_PPC_REL16_HI", /* name */
1713 FALSE, /* partial_inplace */
1714 0, /* src_mask */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1717
1718 /* The high order 16 bits of a relative address, plus 1 if the contents of
1719 the low 16 bits, treated as a signed number, is negative. */
1720 HOWTO (R_PPC_REL16_HA, /* type */
1721 16, /* rightshift */
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 16, /* bitsize */
1724 TRUE, /* pc_relative */
1725 0, /* bitpos */
1726 complain_overflow_dont, /* complain_on_overflow */
1727 ppc_elf_addr16_ha_reloc, /* special_function */
1728 "R_PPC_REL16_HA", /* name */
1729 FALSE, /* partial_inplace */
1730 0, /* src_mask */
1731 0xffff, /* dst_mask */
1732 TRUE), /* pcrel_offset */
1733
a680de9a
PB
1734 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1735 HOWTO (R_PPC_REL16DX_HA, /* type */
1736 16, /* rightshift */
1737 2, /* size (0 = byte, 1 = short, 2 = long) */
1738 16, /* bitsize */
1739 TRUE, /* pc_relative */
1740 0, /* bitpos */
1741 complain_overflow_signed, /* complain_on_overflow */
1742 ppc_elf_addr16_ha_reloc, /* special_function */
1743 "R_PPC_REL16DX_HA", /* name */
1744 FALSE, /* partial_inplace */
1745 0, /* src_mask */
1746 0x1fffc1, /* dst_mask */
1747 TRUE), /* pcrel_offset */
1748
7ba71655
AM
1749 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1750 HOWTO (R_PPC_16DX_HA, /* type */
1751 16, /* rightshift */
1752 2, /* size (0 = byte, 1 = short, 2 = long) */
1753 16, /* bitsize */
1754 FALSE, /* pc_relative */
1755 0, /* bitpos */
1756 complain_overflow_signed, /* complain_on_overflow */
1757 ppc_elf_addr16_ha_reloc, /* special_function */
1758 "R_PPC_16DX_HA", /* name */
1759 FALSE, /* partial_inplace */
1760 0, /* src_mask */
1761 0x1fffc1, /* dst_mask */
1762 FALSE), /* pcrel_offset */
1763
25dbc73a
AM
1764 /* GNU extension to record C++ vtable hierarchy. */
1765 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1766 0, /* rightshift */
1767 0, /* size (0 = byte, 1 = short, 2 = long) */
1768 0, /* bitsize */
1769 FALSE, /* pc_relative */
1770 0, /* bitpos */
1771 complain_overflow_dont, /* complain_on_overflow */
1772 NULL, /* special_function */
1773 "R_PPC_GNU_VTINHERIT", /* name */
1774 FALSE, /* partial_inplace */
1775 0, /* src_mask */
1776 0, /* dst_mask */
1777 FALSE), /* pcrel_offset */
1778
1779 /* GNU extension to record C++ vtable member usage. */
1780 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1781 0, /* rightshift */
1782 0, /* size (0 = byte, 1 = short, 2 = long) */
1783 0, /* bitsize */
1784 FALSE, /* pc_relative */
1785 0, /* bitpos */
1786 complain_overflow_dont, /* complain_on_overflow */
1787 NULL, /* special_function */
1788 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM
1789 FALSE, /* partial_inplace */
1790 0, /* src_mask */
25dbc73a 1791 0, /* dst_mask */
7619e7c7
AM
1792 FALSE), /* pcrel_offset */
1793
25dbc73a
AM
1794 /* Phony reloc to handle AIX style TOC entries. */
1795 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM
1796 0, /* rightshift */
1797 1, /* size (0 = byte, 1 = short, 2 = long) */
1798 16, /* bitsize */
1799 FALSE, /* pc_relative */
1800 0, /* bitpos */
25dbc73a 1801 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1802 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a 1803 "R_PPC_TOC16", /* name */
7619e7c7
AM
1804 FALSE, /* partial_inplace */
1805 0, /* src_mask */
1806 0xffff, /* dst_mask */
1807 FALSE), /* pcrel_offset */
25dbc73a 1808};
70a38d42
SDJ
1809
1810/* External 32-bit PPC structure for PRPSINFO. This structure is
1811 ABI-defined, thus we choose to use char arrays here in order to
1812 avoid dealing with different types in different architectures.
1813
1814 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1815 most non-PPC architectures use `short int'.
1816
1817 This structure will ultimately be written in the corefile's note
1818 section, as the PRPSINFO. */
1819
1820struct elf_external_ppc_linux_prpsinfo32
1821 {
1822 char pr_state; /* Numeric process state. */
1823 char pr_sname; /* Char for pr_state. */
1824 char pr_zomb; /* Zombie. */
1825 char pr_nice; /* Nice val. */
1826 char pr_flag[4]; /* Flags. */
1827 char pr_uid[4];
1828 char pr_gid[4];
1829 char pr_pid[4];
1830 char pr_ppid[4];
1831 char pr_pgrp[4];
1832 char pr_sid[4];
1833 char pr_fname[16]; /* Filename of executable. */
1834 char pr_psargs[80]; /* Initial part of arg list. */
1835 };
1836
aeb70569
AM
1837/* Helper function to copy an elf_internal_linux_prpsinfo in host
1838 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
70a38d42 1839
aeb70569
AM
1840static inline void
1841swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1842 const struct elf_internal_linux_prpsinfo *from,
1843 struct elf_external_ppc_linux_prpsinfo32 *to)
1844{
1845 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1846 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1847 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1848 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1849 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1850 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1851 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1852 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1853 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1854 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1855 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1856 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1857 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1858}
25dbc73a
AM
1859\f
1860/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1861
1862static void
1863ppc_elf_howto_init (void)
1864{
1865 unsigned int i, type;
1866
1867 for (i = 0;
1868 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1869 i++)
1870 {
1871 type = ppc_elf_howto_raw[i].type;
1872 if (type >= (sizeof (ppc_elf_howto_table)
1873 / sizeof (ppc_elf_howto_table[0])))
1874 abort ();
1875 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1876 }
1877}
1878
1879static reloc_howto_type *
1880ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1881 bfd_reloc_code_real_type code)
1882{
1883 enum elf_ppc_reloc_type r;
1884
1885 /* Initialize howto table if not already done. */
1886 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1887 ppc_elf_howto_init ();
1888
1889 switch (code)
1890 {
1891 default:
1892 return NULL;
1893
1894 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1895 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1896 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1fe532cf 1897 case BFD_RELOC_PPC64_ADDR16_DS:
25dbc73a 1898 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1fe532cf 1899 case BFD_RELOC_PPC64_ADDR16_LO_DS:
25dbc73a
AM
1900 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1901 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1902 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1903 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1904 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1905 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1906 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1907 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1908 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1909 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1fe532cf 1910 case BFD_RELOC_PPC64_GOT16_DS:
25dbc73a 1911 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1fe532cf 1912 case BFD_RELOC_PPC64_GOT16_LO_DS:
25dbc73a
AM
1913 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1914 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1915 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1916 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1917 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1918 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1919 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1920 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1921 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1922 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1fe532cf 1923 case BFD_RELOC_PPC64_PLT16_LO_DS:
25dbc73a
AM
1924 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1925 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1926 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1927 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1fe532cf 1928 case BFD_RELOC_PPC64_SECTOFF_DS:
25dbc73a 1929 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1fe532cf 1930 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
25dbc73a
AM
1931 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1932 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1933 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1934 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1fe532cf 1935 case BFD_RELOC_PPC64_TOC16_DS:
25dbc73a
AM
1936 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1937 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
727fc41e
AM
1938 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1939 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
25dbc73a 1940 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1fe532cf 1941 case BFD_RELOC_PPC64_TPREL16_DS:
25dbc73a 1942 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1fe532cf 1943 case BFD_RELOC_PPC64_TPREL16_LO_DS:
25dbc73a
AM
1944 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1945 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1946 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1947 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1fe532cf 1948 case BFD_RELOC_PPC64_DTPREL16_DS:
25dbc73a 1949 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1fe532cf 1950 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
25dbc73a
AM
1951 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1952 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1953 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1954 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1955 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1956 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1957 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1958 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1959 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1960 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1961 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1962 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1963 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1964 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1965 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1966 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1967 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1968 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1969 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1970 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1971 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1972 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1973 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1974 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1975 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1976 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1977 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1978 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1979 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1980 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1981 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1982 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1983 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1984 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1985 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1986 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
b9c361e0
JL
1987 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1988 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1989 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1990 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1991 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1992 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1993 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1994 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1995 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1996 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1997 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1998 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1999 r = R_PPC_VLE_SDAREL_LO16A;
2000 break;
2001 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
2002 r = R_PPC_VLE_SDAREL_LO16D;
2003 break;
2004 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
2005 r = R_PPC_VLE_SDAREL_HI16A;
2006 break;
2007 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
2008 r = R_PPC_VLE_SDAREL_HI16D;
2009 break;
2010 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
2011 r = R_PPC_VLE_SDAREL_HA16A;
2012 break;
2013 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
2014 r = R_PPC_VLE_SDAREL_HA16D;
2015 break;
d7128ce4
AM
2016 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2017 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2018 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2019 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
7ba71655 2020 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
a680de9a 2021 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
25dbc73a
AM
2022 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2023 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2024 }
2025
2026 return ppc_elf_howto_table[r];
2027};
2028
157090f7
AM
2029static reloc_howto_type *
2030ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2031 const char *r_name)
2032{
2033 unsigned int i;
2034
2035 for (i = 0;
2036 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2037 i++)
2038 if (ppc_elf_howto_raw[i].name != NULL
2039 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2040 return &ppc_elf_howto_raw[i];
2041
2042 return NULL;
2043}
2044
25dbc73a
AM
2045/* Set the howto pointer for a PowerPC ELF reloc. */
2046
2047static void
4aef7643 2048ppc_elf_info_to_howto (bfd *abfd,
25dbc73a
AM
2049 arelent *cache_ptr,
2050 Elf_Internal_Rela *dst)
2051{
cd21f5da
NC
2052 unsigned int r_type;
2053
25dbc73a
AM
2054 /* Initialize howto table if not already done. */
2055 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2056 ppc_elf_howto_init ();
2057
cd21f5da
NC
2058 r_type = ELF32_R_TYPE (dst->r_info);
2059 if (r_type >= R_PPC_max)
2060 {
695344c0 2061 /* xgettext:c-format */
4eca0228
AM
2062 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2063 abfd, r_type);
cd21f5da
NC
2064 bfd_set_error (bfd_error_bad_value);
2065 r_type = R_PPC_NONE;
2066 }
2067 cache_ptr->howto = ppc_elf_howto_table[r_type];
375de94a
AM
2068
2069 /* Just because the above assert didn't trigger doesn't mean that
2070 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2071 if (!cache_ptr->howto)
2072 {
695344c0 2073 /* xgettext:c-format */
4eca0228
AM
2074 _bfd_error_handler (_("%B: invalid relocation type %d"),
2075 abfd, r_type);
375de94a
AM
2076 bfd_set_error (bfd_error_bad_value);
2077
2078 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2079 }
25dbc73a
AM
2080}
2081
d7128ce4 2082/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM
2083
2084static bfd_reloc_status_type
4aef7643 2085ppc_elf_addr16_ha_reloc (bfd *abfd,
25dbc73a
AM
2086 arelent *reloc_entry,
2087 asymbol *symbol,
4aef7643 2088 void *data,
25dbc73a
AM
2089 asection *input_section,
2090 bfd *output_bfd,
2091 char **error_message ATTRIBUTE_UNUSED)
2092{
a680de9a
PB
2093 enum elf_ppc_reloc_type r_type;
2094 long insn;
2095 bfd_size_type octets;
2096 bfd_vma value;
25dbc73a
AM
2097
2098 if (output_bfd != NULL)
2099 {
2100 reloc_entry->address += input_section->output_offset;
2101 return bfd_reloc_ok;
2102 }
2103
a680de9a
PB
2104 reloc_entry->addend += 0x8000;
2105 r_type = reloc_entry->howto->type;
2106 if (r_type != R_PPC_REL16DX_HA)
2107 return bfd_reloc_continue;
2108
2109 value = 0;
2110 if (!bfd_is_com_section (symbol->section))
2111 value = symbol->value;
2112 value += (reloc_entry->addend
2113 + symbol->section->output_offset
2114 + symbol->section->output_section->vma);
2115 value -= (reloc_entry->address
2116 + input_section->output_offset
2117 + input_section->output_section->vma);
2118 value >>= 16;
2119
2120 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2121 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2122 insn &= ~0x1fffc1;
2123 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2124 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2125 return bfd_reloc_ok;
25dbc73a
AM
2126}
2127
2128static bfd_reloc_status_type
2129ppc_elf_unhandled_reloc (bfd *abfd,
2130 arelent *reloc_entry,
2131 asymbol *symbol,
2132 void *data,
2133 asection *input_section,
2134 bfd *output_bfd,
2135 char **error_message)
2136{
2137 /* If this is a relocatable link (output_bfd test tells us), just
2138 call the generic function. Any adjustment will be done at final
2139 link time. */
2140 if (output_bfd != NULL)
2141 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2142 input_section, output_bfd, error_message);
2143
2144 if (error_message != NULL)
2145 {
2146 static char buf[60];
2147 sprintf (buf, _("generic linker can't handle %s"),
2148 reloc_entry->howto->name);
2149 *error_message = buf;
2150 }
2151 return bfd_reloc_dangerous;
2152}
2153\f
2154/* Sections created by the linker. */
2155
2156typedef struct elf_linker_section
2157{
c9a2f333 2158 /* Pointer to the bfd section. */
25dbc73a 2159 asection *section;
c9a2f333
AM
2160 /* Section name. */
2161 const char *name;
2162 /* Associated bss section name. */
2163 const char *bss_name;
2164 /* Associated symbol name. */
2165 const char *sym_name;
046183de
AM
2166 /* Associated symbol. */
2167 struct elf_link_hash_entry *sym;
25dbc73a
AM
2168} elf_linker_section_t;
2169
2170/* Linked list of allocated pointer entries. This hangs off of the
2171 symbol lists, and provides allows us to return different pointers,
2172 based on different addend's. */
2173
2174typedef struct elf_linker_section_pointers
2175{
2176 /* next allocated pointer for this symbol */
2177 struct elf_linker_section_pointers *next;
2178 /* offset of pointer from beginning of section */
2179 bfd_vma offset;
2180 /* addend used */
2181 bfd_vma addend;
2182 /* which linker section this is */
2183 elf_linker_section_t *lsect;
25dbc73a
AM
2184} elf_linker_section_pointers_t;
2185
2186struct ppc_elf_obj_tdata
2187{
2188 struct elf_obj_tdata elf;
2189
2190 /* A mapping from local symbols to offsets into the various linker
2191 sections added. This is index by the symbol index. */
2192 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM
2193
2194 /* Flags used to auto-detect plt type. */
2195 unsigned int makes_plt_call : 1;
2196 unsigned int has_rel16 : 1;
25dbc73a
AM
2197};
2198
2199#define ppc_elf_tdata(bfd) \
2200 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 2201
25dbc73a
AM
2202#define elf_local_ptr_offsets(bfd) \
2203 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 2204
0c8d6e5c
AM
2205#define is_ppc_elf(bfd) \
2206 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2207 && elf_object_id (bfd) == PPC32_ELF_DATA)
0c8d6e5c 2208
25dbc73a 2209/* Override the generic function because we store some extras. */
7619e7c7 2210
25dbc73a
AM
2211static bfd_boolean
2212ppc_elf_mkobject (bfd *abfd)
2213{
0ffa91dd 2214 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
4dfe6ac6 2215 PPC32_ELF_DATA);
25dbc73a 2216}
7619e7c7 2217
14b57c7c
AM
2218/* When defaulting arch/mach, decode apuinfo to find a better match. */
2219
2220bfd_boolean
2221_bfd_elf_ppc_set_arch (bfd *abfd)
2222{
2223 unsigned long mach = 0;
2224 asection *s;
2225 unsigned char *contents;
2226
2227 if (abfd->arch_info->bits_per_word == 32
2228 && bfd_big_endian (abfd))
2229 {
2230
2231 for (s = abfd->sections; s != NULL; s = s->next)
2232 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2233 break;
2234 if (s != NULL)
2235 mach = bfd_mach_ppc_vle;
2236 }
2237
2238 if (mach == 0)
2239 {
2240 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2241 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2242 {
2243 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2244 unsigned int i;
2245
2246 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2247 {
2248 unsigned int val = bfd_get_32 (abfd, contents + i);
2249 switch (val >> 16)
2250 {
2251 case PPC_APUINFO_PMR:
2252 case PPC_APUINFO_RFMCI:
2253 if (mach == 0)
2254 mach = bfd_mach_ppc_titan;
2255 break;
2256
2257 case PPC_APUINFO_ISEL:
2258 case PPC_APUINFO_CACHELCK:
2259 if (mach == bfd_mach_ppc_titan)
2260 mach = bfd_mach_ppc_e500mc;
2261 break;
2262
2263 case PPC_APUINFO_SPE:
2264 case PPC_APUINFO_EFS:
2265 case PPC_APUINFO_BRLOCK:
2266 if (mach != bfd_mach_ppc_vle)
2267 mach = bfd_mach_ppc_e500;
8941017b 2268 break;
14b57c7c
AM
2269
2270 case PPC_APUINFO_VLE:
2271 mach = bfd_mach_ppc_vle;
2272 break;
2273
2274 default:
2275 mach = -1ul;
2276 }
2277 }
2278 free (contents);
2279 }
2280 }
2281
2282 if (mach != 0 && mach != -1ul)
2283 {
2284 const bfd_arch_info_type *arch;
2285
2286 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2287 if (arch->mach == mach)
2288 {
2289 abfd->arch_info = arch;
2290 break;
2291 }
2292 }
2293 return TRUE;
2294}
2295
25dbc73a 2296/* Fix bad default arch selected for a 32 bit input bfd when the
14b57c7c 2297 default is 64 bit. Also select arch based on apuinfo. */
7619e7c7 2298
25dbc73a
AM
2299static bfd_boolean
2300ppc_elf_object_p (bfd *abfd)
2301{
14b57c7c
AM
2302 if (!abfd->arch_info->the_default)
2303 return TRUE;
2304
2305 if (abfd->arch_info->bits_per_word == 64)
25dbc73a
AM
2306 {
2307 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 2308
25dbc73a
AM
2309 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2310 {
2311 /* Relies on arch after 64 bit default being 32 bit default. */
2312 abfd->arch_info = abfd->arch_info->next;
2313 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2314 }
2315 }
14b57c7c 2316 return _bfd_elf_ppc_set_arch (abfd);
25dbc73a 2317}
7619e7c7 2318
25dbc73a 2319/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 2320
25dbc73a
AM
2321static bfd_boolean
2322ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2323{
2324 BFD_ASSERT (!elf_flags_init (abfd)
2325 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 2326
25dbc73a
AM
2327 elf_elfheader (abfd)->e_flags = flags;
2328 elf_flags_init (abfd) = TRUE;
2329 return TRUE;
2330}
2331
25dbc73a 2332/* Support for core dump NOTE sections. */
deaaf2f3 2333
b34976b6 2334static bfd_boolean
25dbc73a 2335ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 2336{
25dbc73a
AM
2337 int offset;
2338 unsigned int size;
252b5132 2339
25dbc73a
AM
2340 switch (note->descsz)
2341 {
2342 default:
2343 return FALSE;
252b5132 2344
25dbc73a
AM
2345 case 268: /* Linux/PPC. */
2346 /* pr_cursig */
228e534f 2347 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 2348
25dbc73a 2349 /* pr_pid */
228e534f 2350 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 2351
25dbc73a
AM
2352 /* pr_reg */
2353 offset = 72;
2354 size = 192;
deaaf2f3 2355
25dbc73a
AM
2356 break;
2357 }
deaaf2f3 2358
25dbc73a
AM
2359 /* Make a ".reg/999" section. */
2360 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2361 size, note->descpos + offset);
2362}
252b5132 2363
25dbc73a
AM
2364static bfd_boolean
2365ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2366{
2367 switch (note->descsz)
deaaf2f3 2368 {
25dbc73a
AM
2369 default:
2370 return FALSE;
deaaf2f3 2371
25dbc73a 2372 case 128: /* Linux/PPC elf_prpsinfo. */
228e534f 2373 elf_tdata (abfd)->core->pid
bc989cdc 2374 = bfd_get_32 (abfd, note->descdata + 16);
228e534f 2375 elf_tdata (abfd)->core->program
25dbc73a 2376 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
228e534f 2377 elf_tdata (abfd)->core->command
25dbc73a
AM
2378 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2379 }
9abc968f 2380
25dbc73a
AM
2381 /* Note that for some reason, a spurious space is tacked
2382 onto the end of the args in some (at least one anyway)
2383 implementations, so strip it off if it exists. */
70bccea4 2384
25dbc73a 2385 {
228e534f 2386 char *command = elf_tdata (abfd)->core->command;
25dbc73a 2387 int n = strlen (command);
70bccea4 2388
25dbc73a
AM
2389 if (0 < n && command[n - 1] == ' ')
2390 command[n - 1] = '\0';
2391 }
deaaf2f3 2392
25dbc73a
AM
2393 return TRUE;
2394}
deaaf2f3 2395
70a38d42 2396char *
aeb70569
AM
2397elfcore_write_ppc_linux_prpsinfo32
2398 (bfd *abfd,
2399 char *buf,
2400 int *bufsiz,
2401 const struct elf_internal_linux_prpsinfo *prpsinfo)
70a38d42
SDJ
2402{
2403 struct elf_external_ppc_linux_prpsinfo32 data;
2404
aeb70569 2405 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
70a38d42
SDJ
2406 return elfcore_write_note (abfd, buf, bufsiz,
2407 "CORE", NT_PRPSINFO, &data, sizeof (data));
2408}
2409
183e98be
AM
2410static char *
2411ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2412{
2413 switch (note_type)
2414 {
2415 default:
2416 return NULL;
2417
2418 case NT_PRPSINFO:
2419 {
2420 char data[128];
2421 va_list ap;
2422
2423 va_start (ap, note_type);
75cd47ed 2424 memset (data, 0, sizeof (data));
183e98be
AM
2425 strncpy (data + 32, va_arg (ap, const char *), 16);
2426 strncpy (data + 48, va_arg (ap, const char *), 80);
2427 va_end (ap);
2428 return elfcore_write_note (abfd, buf, bufsiz,
2429 "CORE", note_type, data, sizeof (data));
2430 }
2431
2432 case NT_PRSTATUS:
2433 {
2434 char data[268];
2435 va_list ap;
2436 long pid;
2437 int cursig;
2438 const void *greg;
2439
2440 va_start (ap, note_type);
2441 memset (data, 0, 72);
2442 pid = va_arg (ap, long);
2443 bfd_put_32 (abfd, pid, data + 24);
2444 cursig = va_arg (ap, int);
2445 bfd_put_16 (abfd, cursig, data + 12);
2446 greg = va_arg (ap, const void *);
2447 memcpy (data + 72, greg, 192);
2448 memset (data + 264, 0, 4);
2449 va_end (ap);
2450 return elfcore_write_note (abfd, buf, bufsiz,
2451 "CORE", note_type, data, sizeof (data));
2452 }
2453 }
2454}
2455
b9c361e0 2456static flagword
68ffbac6 2457ppc_elf_lookup_section_flags (char *flag_name)
b9c361e0
JL
2458{
2459
2460 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2461 return SHF_PPC_VLE;
2462
2463 return 0;
2464}
2465
25dbc73a
AM
2466/* Return address for Ith PLT stub in section PLT, for relocation REL
2467 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 2468
25dbc73a
AM
2469static bfd_vma
2470ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2471 const asection *plt ATTRIBUTE_UNUSED,
2472 const arelent *rel)
2473{
2474 return rel->address;
2475}
deaaf2f3 2476
25dbc73a 2477/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
2478 is called when bfd_section_from_shdr finds a section with an unknown
2479 type. */
deaaf2f3 2480
25dbc73a 2481static bfd_boolean
6dc132d9
L
2482ppc_elf_section_from_shdr (bfd *abfd,
2483 Elf_Internal_Shdr *hdr,
2484 const char *name,
2485 int shindex)
25dbc73a
AM
2486{
2487 asection *newsect;
2488 flagword flags;
d1c6de6f 2489
6dc132d9 2490 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 2491 return FALSE;
deaaf2f3 2492
25dbc73a
AM
2493 newsect = hdr->bfd_section;
2494 flags = bfd_get_section_flags (abfd, newsect);
2495 if (hdr->sh_flags & SHF_EXCLUDE)
2496 flags |= SEC_EXCLUDE;
9abc968f 2497
25dbc73a
AM
2498 if (hdr->sh_type == SHT_ORDERED)
2499 flags |= SEC_SORT_ENTRIES;
d1c6de6f 2500
25dbc73a
AM
2501 bfd_set_section_flags (abfd, newsect, flags);
2502 return TRUE;
2503}
2504
2505/* Set up any other section flags and such that may be necessary. */
2506
2507static bfd_boolean
2508ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2509 Elf_Internal_Shdr *shdr,
2510 asection *asect)
2511{
25dbc73a
AM
2512 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2513 shdr->sh_type = SHT_ORDERED;
2514
2515 return TRUE;
2516}
2517
2518/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2519 need to bump up the number of section headers. */
2520
2521static int
a6b96beb
AM
2522ppc_elf_additional_program_headers (bfd *abfd,
2523 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM
2524{
2525 asection *s;
2526 int ret = 0;
d1c6de6f 2527
25dbc73a
AM
2528 s = bfd_get_section_by_name (abfd, ".sbss2");
2529 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2530 ++ret;
d1c6de6f 2531
25dbc73a
AM
2532 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2533 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2534 ++ret;
deaaf2f3 2535
25dbc73a
AM
2536 return ret;
2537}
deaaf2f3 2538
68ffbac6 2539/* Modify the segment map for VLE executables. */
b9c361e0
JL
2540
2541bfd_boolean
2542ppc_elf_modify_segment_map (bfd *abfd,
2543 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2544{
f7d69005 2545 struct elf_segment_map *m;
b9c361e0
JL
2546
2547 /* At this point in the link, output sections have already been sorted by
2548 LMA and assigned to segments. All that is left to do is to ensure
2549 there is no mixing of VLE & non-VLE sections in a text segment.
2550 If we find that case, we split the segment.
2551 We maintain the original output section order. */
2552
12bd6957 2553 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
b9c361e0 2554 {
f7d69005
AM
2555 struct elf_segment_map *n;
2556 bfd_size_type amt;
2557 unsigned int j, k;
2558 unsigned int p_flags;
2559
2560 if (m->p_type != PT_LOAD || m->count == 0)
b9c361e0
JL
2561 continue;
2562
f7d69005 2563 for (p_flags = PF_R, j = 0; j != m->count; ++j)
b9c361e0 2564 {
f7d69005
AM
2565 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2566 p_flags |= PF_W;
2567 if ((m->sections[j]->flags & SEC_CODE) != 0)
2568 {
2569 p_flags |= PF_X;
2570 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2571 p_flags |= PF_PPC_VLE;
2572 break;
2573 }
2574 }
2575 if (j != m->count)
2576 while (++j != m->count)
2577 {
2578 unsigned int p_flags1 = PF_R;
94caa966 2579
f7d69005
AM
2580 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2581 p_flags1 |= PF_W;
2582 if ((m->sections[j]->flags & SEC_CODE) != 0)
2583 {
2584 p_flags1 |= PF_X;
2585 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2586 p_flags1 |= PF_PPC_VLE;
2587 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2588 break;
2589 }
2590 p_flags |= p_flags1;
2591 }
2592 /* If we're splitting a segment which originally contained rw
2593 sections then those sections might now only be in one of the
2594 two parts. So always set p_flags if splitting, even if we
2595 are being called for objcopy with p_flags_valid set. */
2596 if (j != m->count || !m->p_flags_valid)
2597 {
2598 m->p_flags_valid = 1;
2599 m->p_flags = p_flags;
2600 }
2601 if (j == m->count)
b9c361e0
JL
2602 continue;
2603
f7d69005 2604 /* Sections 0..j-1 stay in this (current) segment,
b9c361e0
JL
2605 the remainder are put in a new segment.
2606 The scan resumes with the new segment. */
2607
b9c361e0
JL
2608 amt = sizeof (struct elf_segment_map);
2609 amt += (m->count - j - 1) * sizeof (asection *);
2610 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2611 if (n == NULL)
954b63d4 2612 return FALSE;
b9c361e0
JL
2613
2614 n->p_type = PT_LOAD;
b9c361e0
JL
2615 n->count = m->count - j;
2616 for (k = 0; k < n->count; ++k)
f7d69005
AM
2617 n->sections[k] = m->sections[j + k];
2618 m->count = j;
2619 m->p_size_valid = 0;
b9c361e0
JL
2620 n->next = m->next;
2621 m->next = n;
b9c361e0
JL
2622 }
2623
2624 return TRUE;
2625}
2626
25dbc73a
AM
2627/* Add extra PPC sections -- Note, for now, make .sbss2 and
2628 .PPC.EMB.sbss0 a normal section, and not a bss section so
2629 that the linker doesn't crater when trying to make more than
2630 2 sections. */
e656e369 2631
b35d266b 2632static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 2633{
14b57c7c
AM
2634 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2635 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2636 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2637 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2638 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2639 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2640 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2641 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2642 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2643 { NULL, 0, 0, 0, 0 }
7f4d3958
L
2644};
2645
551b43fd
AM
2646/* This is what we want for new plt/got. */
2647static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 2648 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM
2649
2650static const struct bfd_elf_special_section *
4aef7643 2651ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
7f4d3958 2652{
b35d266b 2653 const struct bfd_elf_special_section *ssect;
551b43fd
AM
2654
2655 /* See if this is one of the special sections. */
2656 if (sec->name == NULL)
2657 return NULL;
2658
2659 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2660 sec->use_rela_p);
2661 if (ssect != NULL)
2662 {
2663 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2664 ssect = &ppc_alt_plt;
2665 return ssect;
2666 }
2667
2668 return _bfd_elf_get_sec_type_attr (abfd, sec);
2669}
25dbc73a
AM
2670\f
2671/* Very simple linked list structure for recording apuinfo values. */
2672typedef struct apuinfo_list
2673{
2674 struct apuinfo_list *next;
2675 unsigned long value;
2676}
2677apuinfo_list;
e656e369 2678
25dbc73a 2679static apuinfo_list *head;
f2faa800 2680static bfd_boolean apuinfo_set;
deaaf2f3 2681
25dbc73a
AM
2682static void
2683apuinfo_list_init (void)
2684{
2685 head = NULL;
f2faa800 2686 apuinfo_set = FALSE;
25dbc73a 2687}
9abc968f 2688
25dbc73a
AM
2689static void
2690apuinfo_list_add (unsigned long value)
2691{
2692 apuinfo_list *entry = head;
deaaf2f3 2693
25dbc73a
AM
2694 while (entry != NULL)
2695 {
2696 if (entry->value == value)
2697 return;
2698 entry = entry->next;
2699 }
b4a38de6 2700
25dbc73a
AM
2701 entry = bfd_malloc (sizeof (* entry));
2702 if (entry == NULL)
2703 return;
e656e369 2704
25dbc73a
AM
2705 entry->value = value;
2706 entry->next = head;
2707 head = entry;
2708}
9abc968f 2709
25dbc73a
AM
2710static unsigned
2711apuinfo_list_length (void)
2712{
2713 apuinfo_list *entry;
2714 unsigned long count;
9abc968f 2715
25dbc73a
AM
2716 for (entry = head, count = 0;
2717 entry;
2718 entry = entry->next)
2719 ++ count;
e656e369 2720
25dbc73a
AM
2721 return count;
2722}
eea6121a 2723
25dbc73a
AM
2724static inline unsigned long
2725apuinfo_list_element (unsigned long number)
2726{
2727 apuinfo_list * entry;
e656e369 2728
25dbc73a
AM
2729 for (entry = head;
2730 entry && number --;
2731 entry = entry->next)
2732 ;
252b5132 2733
25dbc73a
AM
2734 return entry ? entry->value : 0;
2735}
2736
2737static void
2738apuinfo_list_finish (void)
2739{
2740 apuinfo_list *entry;
2741
2742 for (entry = head; entry;)
252b5132 2743 {
25dbc73a
AM
2744 apuinfo_list *next = entry->next;
2745 free (entry);
2746 entry = next;
2747 }
9abc968f 2748
25dbc73a
AM
2749 head = NULL;
2750}
9abc968f 2751
25dbc73a
AM
2752/* Scan the input BFDs and create a linked list of
2753 the APUinfo values that will need to be emitted. */
9abc968f 2754
25dbc73a
AM
2755static void
2756ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2757{
2758 bfd *ibfd;
2759 asection *asec;
deddc40b
NS
2760 char *buffer = NULL;
2761 bfd_size_type largest_input_size = 0;
25dbc73a 2762 unsigned i;
25dbc73a
AM
2763 unsigned long length;
2764 const char *error_message = NULL;
9abc968f 2765
25dbc73a
AM
2766 if (link_info == NULL)
2767 return;
9abc968f 2768
25dbc73a 2769 apuinfo_list_init ();
252b5132 2770
25dbc73a 2771 /* Read in the input sections contents. */
c72f2fb2 2772 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
252b5132 2773 {
25dbc73a 2774 unsigned long datum;
252b5132 2775
25dbc73a
AM
2776 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2777 if (asec == NULL)
2778 continue;
252b5132 2779
695344c0 2780 /* xgettext:c-format */
deddc40b 2781 error_message = _("corrupt %s section in %B");
25dbc73a 2782 length = asec->size;
deddc40b
NS
2783 if (length < 20)
2784 goto fail;
2785
f2faa800 2786 apuinfo_set = TRUE;
deddc40b 2787 if (largest_input_size < asec->size)
25dbc73a 2788 {
deddc40b
NS
2789 if (buffer)
2790 free (buffer);
2791 largest_input_size = asec->size;
2792 buffer = bfd_malloc (largest_input_size);
2793 if (!buffer)
2794 return;
25dbc73a 2795 }
5b914448 2796
25dbc73a 2797 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
deddc40b 2798 || (bfd_bread (buffer, length, ibfd) != length))
25dbc73a 2799 {
695344c0 2800 /* xgettext:c-format */
25dbc73a
AM
2801 error_message = _("unable to read in %s section from %B");
2802 goto fail;
2803 }
252b5132 2804
25dbc73a
AM
2805 /* Verify the contents of the header. Note - we have to
2806 extract the values this way in order to allow for a
2807 host whose endian-ness is different from the target. */
deddc40b 2808 datum = bfd_get_32 (ibfd, buffer);
25dbc73a
AM
2809 if (datum != sizeof APUINFO_LABEL)
2810 goto fail;
252b5132 2811
deddc40b 2812 datum = bfd_get_32 (ibfd, buffer + 8);
25dbc73a
AM
2813 if (datum != 0x2)
2814 goto fail;
252b5132 2815
deddc40b 2816 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
25dbc73a 2817 goto fail;
252b5132 2818
25dbc73a 2819 /* Get the number of bytes used for apuinfo entries. */
deddc40b 2820 datum = bfd_get_32 (ibfd, buffer + 4);
25dbc73a
AM
2821 if (datum + 20 != length)
2822 goto fail;
2823
25dbc73a
AM
2824 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2825 for (i = 0; i < datum; i += 4)
deddc40b 2826 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
252b5132
RH
2827 }
2828
25dbc73a 2829 error_message = NULL;
252b5132 2830
f2faa800 2831 if (apuinfo_set)
deddc40b 2832 {
f2faa800
NS
2833 /* Compute the size of the output section. */
2834 unsigned num_entries = apuinfo_list_length ();
5b914448 2835
deddc40b
NS
2836 /* Set the output section size, if it exists. */
2837 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
f2faa800 2838
deddc40b
NS
2839 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2840 {
2841 ibfd = abfd;
695344c0 2842 /* xgettext:c-format */
deddc40b
NS
2843 error_message = _("warning: unable to set size of %s section in %B");
2844 }
2845 }
25dbc73a
AM
2846
2847 fail:
deddc40b
NS
2848 if (buffer)
2849 free (buffer);
25dbc73a
AM
2850
2851 if (error_message)
cd9af601 2852 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
25dbc73a 2853}
252b5132 2854
25dbc73a
AM
2855/* Prevent the output section from accumulating the input sections'
2856 contents. We have already stored this in our linked list structure. */
252b5132 2857
25dbc73a
AM
2858static bfd_boolean
2859ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2860 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM
2861 asection *asec,
2862 bfd_byte *contents ATTRIBUTE_UNUSED)
2863{
f2faa800 2864 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
252b5132
RH
2865}
2866
25dbc73a
AM
2867/* Finally we can generate the output section. */
2868
2869static void
2870ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2871{
25dbc73a
AM
2872 bfd_byte *buffer;
2873 asection *asec;
2874 unsigned i;
2875 unsigned num_entries;
2876 bfd_size_type length;
7619e7c7 2877
25dbc73a
AM
2878 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2879 if (asec == NULL)
2880 return;
2881
f2faa800 2882 if (!apuinfo_set)
25dbc73a
AM
2883 return;
2884
2885 length = asec->size;
2886 if (length < 20)
2887 return;
2888
2889 buffer = bfd_malloc (length);
2890 if (buffer == NULL)
7619e7c7 2891 {
4eca0228 2892 _bfd_error_handler
25dbc73a
AM
2893 (_("failed to allocate space for new APUinfo section."));
2894 return;
7619e7c7 2895 }
7619e7c7 2896
25dbc73a
AM
2897 /* Create the apuinfo header. */
2898 num_entries = apuinfo_list_length ();
2899 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2900 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2901 bfd_put_32 (abfd, 0x2, buffer + 8);
2902 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2903
25dbc73a
AM
2904 length = 20;
2905 for (i = 0; i < num_entries; i++)
feee612b 2906 {
25dbc73a
AM
2907 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2908 length += 4;
feee612b 2909 }
feee612b 2910
25dbc73a 2911 if (length != asec->size)
4eca0228 2912 _bfd_error_handler (_("failed to compute new APUinfo section."));
252b5132 2913
25dbc73a 2914 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
4eca0228 2915 _bfd_error_handler (_("failed to install new APUinfo section."));
252b5132 2916
25dbc73a
AM
2917 free (buffer);
2918
2919 apuinfo_list_finish ();
252b5132 2920}
25dbc73a 2921\f
7382d32a 2922static bfd_boolean
c6dd29ce 2923is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
7382d32a 2924{
c6dd29ce 2925 bfd_byte buf[GLINK_ENTRY_SIZE];
7382d32a 2926
c6dd29ce 2927 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
7382d32a
AM
2928 return FALSE;
2929
c6dd29ce
AM
2930 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2931 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2932 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2933 && bfd_get_32 (abfd, buf + 12) == BCTR);
7382d32a
AM
2934}
2935
468392fb
AM
2936static bfd_boolean
2937section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2938{
2939 bfd_vma vma = *(bfd_vma *) ptr;
2940 return ((section->flags & SEC_ALLOC) != 0
2941 && section->vma <= vma
2942 && vma < section->vma + section->size);
2943}
2944
2945static long
2946ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2947 long dynsymcount, asymbol **dynsyms,
2948 asymbol **ret)
2949{
2950 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2951 asection *plt, *relplt, *dynamic, *glink;
2952 bfd_vma glink_vma = 0;
2953 bfd_vma resolv_vma = 0;
2954 bfd_vma stub_vma;
2955 asymbol *s;
2956 arelent *p;
2957 long count, i;
2958 size_t size;
2959 char *names;
2960 bfd_byte buf[4];
2961
2962 *ret = NULL;
2963
2964 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2965 return 0;
2966
2967 if (dynsymcount <= 0)
2968 return 0;
2969
2970 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2971 if (relplt == NULL)
2972 return 0;
2973
2974 plt = bfd_get_section_by_name (abfd, ".plt");
2975 if (plt == NULL)
2976 return 0;
2977
2978 /* Call common code to handle old-style executable PLTs. */
2979 if (elf_section_flags (plt) & SHF_EXECINSTR)
2980 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2981 dynsymcount, dynsyms, ret);
2982
2983 /* If this object was prelinked, the prelinker stored the address
2984 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2985 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2986 if (dynamic != NULL)
2987 {
2988 bfd_byte *dynbuf, *extdyn, *extdynend;
2989 size_t extdynsize;
2990 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2991
2992 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2993 return -1;
2994
2995 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2996 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2997
2998 extdyn = dynbuf;
2999 extdynend = extdyn + dynamic->size;
3000 for (; extdyn < extdynend; extdyn += extdynsize)
3001 {
3002 Elf_Internal_Dyn dyn;
3003 (*swap_dyn_in) (abfd, extdyn, &dyn);
3004
3005 if (dyn.d_tag == DT_NULL)
3006 break;
3007
3008 if (dyn.d_tag == DT_PPC_GOT)
3009 {
3010 unsigned int g_o_t = dyn.d_un.d_val;
3011 asection *got = bfd_get_section_by_name (abfd, ".got");
3012 if (got != NULL
3013 && bfd_get_section_contents (abfd, got, buf,
3014 g_o_t - got->vma + 4, 4))
3015 glink_vma = bfd_get_32 (abfd, buf);
3016 break;
3017 }
3018 }
3019 free (dynbuf);
3020 }
3021
3022 /* Otherwise we read the first plt entry. */
3023 if (glink_vma == 0)
3024 {
3025 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3026 glink_vma = bfd_get_32 (abfd, buf);
3027 }
3028
3029 if (glink_vma == 0)
3030 return 0;
3031
3032 /* The .glink section usually does not survive the final
3033 link; search for the section (usually .text) where the
3034 glink stubs now reside. */
3035 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3036 if (glink == NULL)
3037 return 0;
3038
3039 /* Determine glink PLT resolver by reading the relative branch
3040 from the first glink stub. */
3041 if (bfd_get_section_contents (abfd, glink, buf,
3042 glink_vma - glink->vma, 4))
3043 {
3044 unsigned int insn = bfd_get_32 (abfd, buf);
3045
3046 /* The first glink stub may either branch to the resolver ... */
3047 insn ^= B;
3048 if ((insn & ~0x3fffffc) == 0)
3049 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3050
3051 /* ... or fall through a bunch of NOPs. */
3052 else if ((insn ^ B ^ NOP) == 0)
3053 for (i = 4;
3054 bfd_get_section_contents (abfd, glink, buf,
3055 glink_vma - glink->vma + i, 4);
3056 i += 4)
3057 if (bfd_get_32 (abfd, buf) != NOP)
3058 {
3059 resolv_vma = glink_vma + i;
3060 break;
3061 }
3062 }
3063
7382d32a 3064 count = relplt->size / sizeof (Elf32_External_Rela);
7382d32a
AM
3065 /* If the stubs are those for -shared/-pie then we might have
3066 multiple stubs for each plt entry. If that is the case then
3067 there is no way to associate stubs with their plt entries short
3068 of figuring out the GOT pointer value used in the stub. */
c6dd29ce
AM
3069 if (!is_nonpic_glink_stub (abfd, glink,
3070 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
7382d32a
AM
3071 return 0;
3072
468392fb
AM
3073 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3074 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3075 return -1;
3076
468392fb
AM
3077 size = count * sizeof (asymbol);
3078 p = relplt->relocation;
3079 for (i = 0; i < count; i++, p++)
e054468f
AM
3080 {
3081 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3082 if (p->addend != 0)
3083 size += sizeof ("+0x") - 1 + 8;
3084 }
468392fb
AM
3085
3086 size += sizeof (asymbol) + sizeof ("__glink");
3087
3088 if (resolv_vma)
3089 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3090
3091 s = *ret = bfd_malloc (size);
3092 if (s == NULL)
3093 return -1;
3094
1079403c 3095 stub_vma = glink_vma;
468392fb 3096 names = (char *) (s + count + 1 + (resolv_vma != 0));
1079403c
AM
3097 p = relplt->relocation + count - 1;
3098 for (i = 0; i < count; i++)
468392fb
AM
3099 {
3100 size_t len;
3101
3102 *s = **p->sym_ptr_ptr;
3103 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3104 we are defining a symbol, ensure one of them is set. */
3105 if ((s->flags & BSF_LOCAL) == 0)
3106 s->flags |= BSF_GLOBAL;
6ba2a415 3107 s->flags |= BSF_SYNTHETIC;
468392fb 3108 s->section = glink;
1079403c
AM
3109 stub_vma -= 16;
3110 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3111 stub_vma -= 32;
468392fb
AM
3112 s->value = stub_vma - glink->vma;
3113 s->name = names;
3114 s->udata.p = NULL;
3115 len = strlen ((*p->sym_ptr_ptr)->name);
3116 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3117 names += len;
e054468f
AM
3118 if (p->addend != 0)
3119 {
3120 memcpy (names, "+0x", sizeof ("+0x") - 1);
3121 names += sizeof ("+0x") - 1;
3122 bfd_sprintf_vma (abfd, names, p->addend);
3123 names += strlen (names);
3124 }
468392fb
AM
3125 memcpy (names, "@plt", sizeof ("@plt"));
3126 names += sizeof ("@plt");
3127 ++s;
1079403c 3128 --p;
468392fb
AM
3129 }
3130
3131 /* Add a symbol at the start of the glink branch table. */
86a4952b 3132 memset (s, 0, sizeof *s);
468392fb 3133 s->the_bfd = abfd;
6ba2a415 3134 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3135 s->section = glink;
3136 s->value = glink_vma - glink->vma;
3137 s->name = names;
3138 memcpy (names, "__glink", sizeof ("__glink"));
3139 names += sizeof ("__glink");
3140 s++;
3141 count++;
3142
3143 if (resolv_vma)
3144 {
3145 /* Add a symbol for the glink PLT resolver. */
86a4952b 3146 memset (s, 0, sizeof *s);
468392fb 3147 s->the_bfd = abfd;
6ba2a415 3148 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3149 s->section = glink;
3150 s->value = resolv_vma - glink->vma;
3151 s->name = names;
3152 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3153 names += sizeof ("__glink_PLTresolve");
3154 s++;
3155 count++;
3156 }
3157
3158 return count;
3159}
3160\f
25dbc73a
AM
3161/* The following functions are specific to the ELF linker, while
3162 functions above are used generally. They appear in this file more
3163 or less in the order in which they are called. eg.
3164 ppc_elf_check_relocs is called early in the link process,
3165 ppc_elf_finish_dynamic_sections is one of the last functions
3166 called. */
252b5132 3167
a6aa5195 3168/* Track PLT entries needed for a given symbol. We might need more
a877a2b6 3169 than one glink entry per symbol when generating a pic binary. */
a6aa5195
AM
3170struct plt_entry
3171{
3172 struct plt_entry *next;
3173
3174 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3175 This field stores the offset into .got2 used to initialise the
a877a2b6
AM
3176 GOT pointer reg. It will always be at least 32768. (Current
3177 gcc always uses an offset of 32768, but ld -r will pack .got2
3178 sections together resulting in larger offsets). */
a6aa5195
AM
3179 bfd_vma addend;
3180
3181 /* The .got2 section. */
3182 asection *sec;
3183
3184 /* PLT refcount or offset. */
3185 union
3186 {
3187 bfd_signed_vma refcount;
3188 bfd_vma offset;
3189 } plt;
3190
3191 /* .glink stub offset. */
3192 bfd_vma glink_offset;
3193};
3194
7c8bbca5
AM
3195/* Of those relocs that might be copied as dynamic relocs, this
3196 function selects those that must be copied when linking a shared
3197 library or PIE, even when the symbol is local. */
252b5132 3198
1d483afe
AM
3199static int
3200must_be_dyn_reloc (struct bfd_link_info *info,
3201 enum elf_ppc_reloc_type r_type)
3202{
3203 switch (r_type)
3204 {
3205 default:
7c8bbca5
AM
3206 /* Only relative relocs can be resolved when the object load
3207 address isn't fixed. DTPREL32 is excluded because the
3208 dynamic linker needs to differentiate global dynamic from
3209 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
1d483afe
AM
3210 return 1;
3211
3212 case R_PPC_REL24:
3213 case R_PPC_REL14:
3214 case R_PPC_REL14_BRTAKEN:
3215 case R_PPC_REL14_BRNTAKEN:
3216 case R_PPC_REL32:
3217 return 0;
3218
3219 case R_PPC_TPREL32:
3220 case R_PPC_TPREL16:
3221 case R_PPC_TPREL16_LO:
3222 case R_PPC_TPREL16_HI:
3223 case R_PPC_TPREL16_HA:
7c8bbca5
AM
3224 /* These relocations are relative but in a shared library the
3225 linker doesn't know the thread pointer base. */
3226 return bfd_link_dll (info);
1d483afe
AM
3227 }
3228}
252b5132 3229
21d68fcd
AM
3230/* Whether an undefined weak symbol should resolve to its link-time
3231 value, even in PIC or PIE objects. */
3232#define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
3233 ((H)->root.type == bfd_link_hash_undefweak \
3234 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
3235 || (INFO)->dynamic_undefined_weak == 0))
3236
25dbc73a
AM
3237/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3238 copying dynamic variables from a shared lib into an app's dynbss
3239 section, and instead use a dynamic relocation to point into the
3240 shared lib. */
3241#define ELIMINATE_COPY_RELOCS 1
252b5132 3242
f95f8542
AM
3243/* Used to track dynamic relocations for local symbols. */
3244struct ppc_dyn_relocs
3245{
3246 struct ppc_dyn_relocs *next;
3247
3248 /* The input section of the reloc. */
3249 asection *sec;
3250
3251 /* Total number of relocs copied for the input section. */
3252 unsigned int count : 31;
3253
3254 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3255 unsigned int ifunc : 1;
3256};
3257
25dbc73a 3258/* PPC ELF linker hash entry. */
252b5132 3259
25dbc73a
AM
3260struct ppc_elf_link_hash_entry
3261{
3262 struct elf_link_hash_entry elf;
252b5132 3263
25dbc73a
AM
3264 /* If this symbol is used in the linker created sections, the processor
3265 specific backend uses this field to map the field into the offset
3266 from the beginning of the section. */
3267 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 3268
25dbc73a 3269 /* Track dynamic relocs copied for this symbol. */
6061a67d 3270 struct elf_dyn_relocs *dyn_relocs;
252b5132 3271
25dbc73a
AM
3272 /* Contexts in which symbol is used in the GOT (or TOC).
3273 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3274 corresponding relocs are encountered during check_relocs.
3275 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3276 indicate the corresponding GOT entry type is not needed. */
3277#define TLS_GD 1 /* GD reloc. */
3278#define TLS_LD 2 /* LD reloc. */
3279#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3280#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3281#define TLS_TLS 16 /* Any TLS reloc. */
3282#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
e054468f 3283#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
25dbc73a 3284 char tls_mask;
4dc4a9a5
DJ
3285
3286 /* Nonzero if we have seen a small data relocation referring to this
3287 symbol. */
d3e454b9
AM
3288 unsigned char has_sda_refs : 1;
3289
3290 /* Flag use of given relocations. */
3291 unsigned char has_addr16_ha : 1;
3292 unsigned char has_addr16_lo : 1;
25dbc73a 3293};
252b5132 3294
25dbc73a
AM
3295#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3296
3297/* PPC ELF linker hash table. */
3298
3299struct ppc_elf_link_hash_table
3300{
3301 struct elf_link_hash_table elf;
3302
5446cbdf
AM
3303 /* Various options passed from the linker. */
3304 struct ppc_elf_params *params;
3305
25dbc73a 3306 /* Short-cuts to get to dynamic linker sections. */
d7128ce4 3307 asection *glink;
25dbc73a
AM
3308 asection *dynsbss;
3309 asection *relsbss;
c9a2f333 3310 elf_linker_section_t sdata[2];
25dbc73a 3311 asection *sbss;
6177242a 3312 asection *glink_eh_frame;
25dbc73a 3313
016687f8
AM
3314 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3315 asection *srelplt2;
3316
1d483afe 3317 /* Shortcut to __tls_get_addr. */
25dbc73a 3318 struct elf_link_hash_entry *tls_get_addr;
252b5132 3319
016687f8
AM
3320 /* The bfd that forced an old-style PLT. */
3321 bfd *old_bfd;
5b914448 3322
25dbc73a
AM
3323 /* TLS local dynamic got entry handling. */
3324 union {
3325 bfd_signed_vma refcount;
3326 bfd_vma offset;
3327 } tlsld_got;
252b5132 3328
c6dd29ce 3329 /* Offset of branch table to PltResolve function in glink. */
d7128ce4
AM
3330 bfd_vma glink_pltresolve;
3331
3b36f7e6
AM
3332 /* Size of reserved GOT entries. */
3333 unsigned int got_header_size;
3334 /* Non-zero if allocating the header left a gap. */
3335 unsigned int got_gap;
3336
4a3dc543
RS
3337 /* The type of PLT we have chosen to use. */
3338 enum ppc_elf_plt_type plt_type;
3339
9d8504b1 3340 /* True if the target system is VxWorks. */
016687f8 3341 unsigned int is_vxworks:1;
9d8504b1 3342
82e66161
AM
3343 /* Whether there exist local gnu indirect function resolvers,
3344 referenced by dynamic relocations. */
3345 unsigned int local_ifunc_resolver:1;
3346 unsigned int maybe_local_ifunc_resolver:1;
3347
9d8504b1
PB
3348 /* The size of PLT entries. */
3349 int plt_entry_size;
3350 /* The distance between adjacent PLT slots. */
3351 int plt_slot_size;
3352 /* The size of the first PLT entry. */
3353 int plt_initial_entry_size;
016687f8 3354
87d72d41
AM
3355 /* Small local sym cache. */
3356 struct sym_cache sym_cache;
25dbc73a 3357};
252b5132 3358
94caa966
AM
3359/* Rename some of the generic section flags to better document how they
3360 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3361
3362/* Nonzero if this section has TLS related relocations. */
3363#define has_tls_reloc sec_flg0
3364
3365/* Nonzero if this section has a call to __tls_get_addr. */
3366#define has_tls_get_addr_call sec_flg1
3367
25dbc73a 3368/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 3369
25dbc73a 3370#define ppc_elf_hash_table(p) \
4dfe6ac6
NC
3371 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3372 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
252b5132 3373
25dbc73a 3374/* Create an entry in a PPC ELF linker hash table. */
252b5132 3375
25dbc73a
AM
3376static struct bfd_hash_entry *
3377ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3378 struct bfd_hash_table *table,
3379 const char *string)
252b5132 3380{
25dbc73a
AM
3381 /* Allocate the structure if it has not already been allocated by a
3382 subclass. */
3383 if (entry == NULL)
3384 {
3385 entry = bfd_hash_allocate (table,
3386 sizeof (struct ppc_elf_link_hash_entry));
3387 if (entry == NULL)
3388 return entry;
3389 }
252b5132 3390
25dbc73a
AM
3391 /* Call the allocation method of the superclass. */
3392 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3393 if (entry != NULL)
3394 {
3395 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3396 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3397 ppc_elf_hash_entry (entry)->tls_mask = 0;
5240d94d 3398 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
25dbc73a 3399 }
252b5132 3400
25dbc73a 3401 return entry;
252b5132 3402}
3dab13f6 3403
25dbc73a 3404/* Create a PPC ELF linker hash table. */
3dab13f6 3405
25dbc73a
AM
3406static struct bfd_link_hash_table *
3407ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 3408{
25dbc73a 3409 struct ppc_elf_link_hash_table *ret;
76e7a751 3410 static struct ppc_elf_params default_params
08dc996f 3411 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 };
3dab13f6 3412
25dbc73a
AM
3413 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3414 if (ret == NULL)
3415 return NULL;
3dab13f6 3416
66eb6687
AM
3417 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3418 ppc_elf_link_hash_newfunc,
4dfe6ac6
NC
3419 sizeof (struct ppc_elf_link_hash_entry),
3420 PPC32_ELF_DATA))
3dab13f6 3421 {
25dbc73a
AM
3422 free (ret);
3423 return NULL;
3424 }
58111eb7 3425
a6aa5195
AM
3426 ret->elf.init_plt_refcount.refcount = 0;
3427 ret->elf.init_plt_refcount.glist = NULL;
3428 ret->elf.init_plt_offset.offset = 0;
3429 ret->elf.init_plt_offset.glist = NULL;
3430
db434ba0
AM
3431 ret->params = &default_params;
3432
c9a2f333
AM
3433 ret->sdata[0].name = ".sdata";
3434 ret->sdata[0].sym_name = "_SDA_BASE_";
3435 ret->sdata[0].bss_name = ".sbss";
3436
3437 ret->sdata[1].name = ".sdata2";
3438 ret->sdata[1].sym_name = "_SDA2_BASE_";
3439 ret->sdata[1].bss_name = ".sbss2";
3440
9d8504b1
PB
3441 ret->plt_entry_size = 12;
3442 ret->plt_slot_size = 8;
3443 ret->plt_initial_entry_size = 72;
9d8504b1 3444
25dbc73a
AM
3445 return &ret->elf.root;
3446}
3dab13f6 3447
5446cbdf
AM
3448/* Hook linker params into hash table. */
3449
3450void
3451ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3452{
3453 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3454
3455 if (htab)
3456 htab->params = params;
76e7a751 3457 params->pagesize_p2 = bfd_log2 (params->pagesize);
5446cbdf
AM
3458}
3459
9d8504b1 3460/* Create .got and the related sections. */
3dab13f6 3461
25dbc73a
AM
3462static bfd_boolean
3463ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3464{
3465 struct ppc_elf_link_hash_table *htab;
3dab13f6 3466
25dbc73a
AM
3467 if (!_bfd_elf_create_got_section (abfd, info))
3468 return FALSE;
3dab13f6 3469
25dbc73a 3470 htab = ppc_elf_hash_table (info);
ce558b89 3471 if (!htab->is_vxworks)
9d8504b1
PB
3472 {
3473 /* The powerpc .got has a blrl instruction in it. Mark it
3474 executable. */
ce558b89
AM
3475 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3476 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3477 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
9d8504b1
PB
3478 return FALSE;
3479 }
3dab13f6 3480
25dbc73a
AM
3481 return TRUE;
3482}
3dab13f6 3483
93d1b056
AM
3484/* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3485 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3486 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3487
3488static bfd_boolean
3489ppc_elf_create_linker_section (bfd *abfd,
3490 struct bfd_link_info *info,
3491 flagword flags,
3492 elf_linker_section_t *lsect)
3493{
3494 asection *s;
3495
3496 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3497 | SEC_LINKER_CREATED);
3498
3499 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3500 if (s == NULL)
3501 return FALSE;
3502 lsect->section = s;
3503
3504 /* Define the sym on the first section of this name. */
3505 s = bfd_get_section_by_name (abfd, lsect->name);
3506
3507 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3508 if (lsect->sym == NULL)
3509 return FALSE;
3510 lsect->sym->root.u.def.value = 0x8000;
3511 return TRUE;
3512}
3513
e054468f
AM
3514static bfd_boolean
3515ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3516{
3517 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3518 asection *s;
3519 flagword flags;
3520
3521 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3522 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3523 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3524 htab->glink = s;
3525 if (s == NULL
5446cbdf
AM
3526 || !bfd_set_section_alignment (abfd, s,
3527 htab->params->ppc476_workaround ? 6 : 4))
e054468f
AM
3528 return FALSE;
3529
6177242a
AM
3530 if (!info->no_ld_generated_unwind_info)
3531 {
3532 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3533 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3534 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3535 htab->glink_eh_frame = s;
3536 if (s == NULL
3537 || !bfd_set_section_alignment (abfd, s, 2))
3538 return FALSE;
3539 }
3540
e054468f
AM
3541 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3542 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
ce558b89 3543 htab->elf.iplt = s;
e054468f
AM
3544 if (s == NULL
3545 || !bfd_set_section_alignment (abfd, s, 4))
3546 return FALSE;
3547
3548 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3549 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3550 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
ce558b89 3551 htab->elf.irelplt = s;
e054468f
AM
3552 if (s == NULL
3553 || ! bfd_set_section_alignment (abfd, s, 2))
3554 return FALSE;
93d1b056
AM
3555
3556 if (!ppc_elf_create_linker_section (abfd, info, 0,
3557 &htab->sdata[0]))
3558 return FALSE;
3559
3560 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3561 &htab->sdata[1]))
3562 return FALSE;
3563
e054468f
AM
3564 return TRUE;
3565}
3566
25dbc73a
AM
3567/* We have to create .dynsbss and .rela.sbss here so that they get mapped
3568 to output sections (just like _bfd_elf_create_dynamic_sections has
3569 to create .dynbss and .rela.bss). */
3dab13f6 3570
25dbc73a
AM
3571static bfd_boolean
3572ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3573{
3574 struct ppc_elf_link_hash_table *htab;
3575 asection *s;
3576 flagword flags;
3dab13f6 3577
25dbc73a 3578 htab = ppc_elf_hash_table (info);
3dab13f6 3579
ce558b89 3580 if (htab->elf.sgot == NULL
25dbc73a 3581 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
3582 return FALSE;
3583
25dbc73a
AM
3584 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3585 return FALSE;
3dab13f6 3586
e054468f
AM
3587 if (htab->glink == NULL
3588 && !ppc_elf_create_glink (abfd, info))
d7128ce4 3589 return FALSE;
3dab13f6 3590
14b2f831
AM
3591 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3592 SEC_ALLOC | SEC_LINKER_CREATED);
3b36f7e6 3593 htab->dynsbss = s;
3496cb2a 3594 if (s == NULL)
25dbc73a 3595 return FALSE;
3dab13f6 3596
0e1862bb 3597 if (! bfd_link_pic (info))
25dbc73a 3598 {
e054468f
AM
3599 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3600 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3601 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 3602 htab->relsbss = s;
25dbc73a 3603 if (s == NULL
25dbc73a
AM
3604 || ! bfd_set_section_alignment (abfd, s, 2))
3605 return FALSE;
3606 }
3dab13f6 3607
711de32c
RS
3608 if (htab->is_vxworks
3609 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3610 return FALSE;
9d8504b1 3611
ce558b89 3612 s = htab->elf.splt;
3b36f7e6 3613 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
3614 if (htab->plt_type == PLT_VXWORKS)
3615 /* The VxWorks PLT is a loaded section with contents. */
3616 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
3617 return bfd_set_section_flags (abfd, s, flags);
3618}
3dab13f6 3619
25dbc73a 3620/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 3621
25dbc73a 3622static void
fcfa13d2 3623ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
3624 struct elf_link_hash_entry *dir,
3625 struct elf_link_hash_entry *ind)
3626{
3627 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 3628
25dbc73a
AM
3629 edir = (struct ppc_elf_link_hash_entry *) dir;
3630 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 3631
c79d6685
AM
3632 edir->tls_mask |= eind->tls_mask;
3633 edir->has_sda_refs |= eind->has_sda_refs;
3634
3635 /* If called to transfer flags for a weakdef during processing
3636 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3637 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3638 if (!(ELIMINATE_COPY_RELOCS
3639 && eind->elf.root.type != bfd_link_hash_indirect
3640 && edir->elf.dynamic_adjusted))
3641 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3642
e81830c5
AM
3643 if (edir->elf.versioned != versioned_hidden)
3644 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
c79d6685
AM
3645 edir->elf.ref_regular |= eind->elf.ref_regular;
3646 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3647 edir->elf.needs_plt |= eind->elf.needs_plt;
3648 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3649
25dbc73a
AM
3650 if (eind->dyn_relocs != NULL)
3651 {
3652 if (edir->dyn_relocs != NULL)
3dab13f6 3653 {
6061a67d
AM
3654 struct elf_dyn_relocs **pp;
3655 struct elf_dyn_relocs *p;
3dab13f6 3656
fcfa13d2 3657 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
3658 list. Merge any entries against the same section. */
3659 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 3660 {
6061a67d 3661 struct elf_dyn_relocs *q;
25dbc73a
AM
3662
3663 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3664 if (q->sec == p->sec)
3665 {
3666 q->pc_count += p->pc_count;
3667 q->count += p->count;
3668 *pp = p->next;
3669 break;
3670 }
3671 if (q == NULL)
3672 pp = &p->next;
3dab13f6 3673 }
25dbc73a 3674 *pp = edir->dyn_relocs;
3dab13f6 3675 }
25dbc73a
AM
3676
3677 edir->dyn_relocs = eind->dyn_relocs;
3678 eind->dyn_relocs = NULL;
3dab13f6 3679 }
3dab13f6 3680
68ba6d40
AM
3681 /* If we were called to copy over info for a weak sym, that's all.
3682 You might think dyn_relocs need not be copied over; After all,
3683 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 3684 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM
3685 code in ppc_elf_adjust_dynamic_symbol needs to check for
3686 dyn_relocs in read-only sections, and it does so on what is the
3687 DIR sym here. */
3688 if (eind->elf.root.type != bfd_link_hash_indirect)
3689 return;
3690
a6aa5195
AM
3691 /* Copy over the GOT refcount entries that we may have already seen to
3692 the symbol which just became indirect. */
fcfa13d2
AM
3693 edir->elf.got.refcount += eind->elf.got.refcount;
3694 eind->elf.got.refcount = 0;
a6aa5195
AM
3695
3696 /* And plt entries. */
3697 if (eind->elf.plt.plist != NULL)
3698 {
3699 if (edir->elf.plt.plist != NULL)
3700 {
3701 struct plt_entry **entp;
3702 struct plt_entry *ent;
3703
3704 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3705 {
3706 struct plt_entry *dent;
3707
3708 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3709 if (dent->sec == ent->sec && dent->addend == ent->addend)
3710 {
3711 dent->plt.refcount += ent->plt.refcount;
3712 *entp = ent->next;
3713 break;
3714 }
3715 if (dent == NULL)
3716 entp = &ent->next;
3717 }
3718 *entp = edir->elf.plt.plist;
3719 }
3720
3721 edir->elf.plt.plist = eind->elf.plt.plist;
3722 eind->elf.plt.plist = NULL;
3723 }
3724
fcfa13d2 3725 if (eind->elf.dynindx != -1)
25dbc73a 3726 {
fcfa13d2
AM
3727 if (edir->elf.dynindx != -1)
3728 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3729 edir->elf.dynstr_index);
a6aa5195
AM
3730 edir->elf.dynindx = eind->elf.dynindx;
3731 edir->elf.dynstr_index = eind->elf.dynstr_index;
3732 eind->elf.dynindx = -1;
3733 eind->elf.dynstr_index = 0;
25dbc73a 3734 }
25dbc73a 3735}
3dab13f6 3736
25dbc73a
AM
3737/* Hook called by the linker routine which adds symbols from an object
3738 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3739
25dbc73a
AM
3740static bfd_boolean
3741ppc_elf_add_symbol_hook (bfd *abfd,
3742 struct bfd_link_info *info,
3743 Elf_Internal_Sym *sym,
3744 const char **namep ATTRIBUTE_UNUSED,
3745 flagword *flagsp ATTRIBUTE_UNUSED,
3746 asection **secp,
3747 bfd_vma *valp)
3748{
3749 if (sym->st_shndx == SHN_COMMON
0e1862bb 3750 && !bfd_link_relocatable (info)
0c8d6e5c
AM
3751 && is_ppc_elf (info->output_bfd)
3752 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
3753 {
3754 /* Common symbols less than or equal to -G nn bytes are automatically
3755 put into .sbss. */
3756 struct ppc_elf_link_hash_table *htab;
3dab13f6 3757
25dbc73a
AM
3758 htab = ppc_elf_hash_table (info);
3759 if (htab->sbss == NULL)
3760 {
644285ef 3761 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3762
644285ef
AM
3763 if (!htab->elf.dynobj)
3764 htab->elf.dynobj = abfd;
3765
3496cb2a
L
3766 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3767 ".sbss",
3768 flags);
3769 if (htab->sbss == NULL)
25dbc73a 3770 return FALSE;
3dab13f6 3771 }
3dab13f6 3772
25dbc73a
AM
3773 *secp = htab->sbss;
3774 *valp = sym->st_size;
3775 }
3dab13f6 3776
a43942db 3777 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
f1885d1e
AM
3778 && (abfd->flags & DYNAMIC) == 0
3779 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
a43942db 3780 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
e054468f 3781
25dbc73a 3782 return TRUE;
3dab13f6
AM
3783}
3784\f
25dbc73a
AM
3785/* Find a linker generated pointer with a given addend and type. */
3786
3787static elf_linker_section_pointers_t *
3788elf_find_pointer_linker_section
3789 (elf_linker_section_pointers_t *linker_pointers,
3790 bfd_vma addend,
3791 elf_linker_section_t *lsect)
252b5132 3792{
25dbc73a
AM
3793 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3794 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3795 return linker_pointers;
252b5132 3796
25dbc73a
AM
3797 return NULL;
3798}
3799
3800/* Allocate a pointer to live in a linker created section. */
3801
3802static bfd_boolean
93d1b056
AM
3803elf_allocate_pointer_linker_section (bfd *abfd,
3804 elf_linker_section_t *lsect,
3805 struct elf_link_hash_entry *h,
3806 const Elf_Internal_Rela *rel)
25dbc73a
AM
3807{
3808 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3809 elf_linker_section_pointers_t *linker_section_ptr;
3810 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3811 bfd_size_type amt;
3812
3813 BFD_ASSERT (lsect != NULL);
3814
3815 /* Is this a global symbol? */
3816 if (h != NULL)
3817 {
3818 struct ppc_elf_link_hash_entry *eh;
3819
3820 /* Has this symbol already been allocated? If so, our work is done. */
3821 eh = (struct ppc_elf_link_hash_entry *) h;
3822 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3823 rel->r_addend,
3824 lsect))
3825 return TRUE;
3826
3827 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3828 }
3829 else
3830 {
0c8d6e5c 3831 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3832
25dbc73a
AM
3833 /* Allocation of a pointer to a local symbol. */
3834 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3835
3836 /* Allocate a table to hold the local symbols if first time. */
3837 if (!ptr)
3838 {
0ffa91dd 3839 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3840
3841 amt = num_symbols;
3842 amt *= sizeof (elf_linker_section_pointers_t *);
3843 ptr = bfd_zalloc (abfd, amt);
3844
3845 if (!ptr)
3846 return FALSE;
3847
3848 elf_local_ptr_offsets (abfd) = ptr;
3849 }
3850
3851 /* Has this symbol already been allocated? If so, our work is done. */
3852 if (elf_find_pointer_linker_section (ptr[r_symndx],
3853 rel->r_addend,
3854 lsect))
3855 return TRUE;
252b5132 3856
25dbc73a 3857 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3858 }
41fcb14e 3859
25dbc73a
AM
3860 /* Allocate space for a pointer in the linker section, and allocate
3861 a new pointer record from internal memory. */
3862 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3863 amt = sizeof (elf_linker_section_pointers_t);
3864 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3865
25dbc73a 3866 if (!linker_section_ptr)
7619e7c7 3867 return FALSE;
41fcb14e 3868
25dbc73a
AM
3869 linker_section_ptr->next = *ptr_linker_section_ptr;
3870 linker_section_ptr->addend = rel->r_addend;
3871 linker_section_ptr->lsect = lsect;
25dbc73a 3872 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3873
93d1b056
AM
3874 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3875 return FALSE;
25dbc73a
AM
3876 linker_section_ptr->offset = lsect->section->size;
3877 lsect->section->size += 4;
7619e7c7 3878
25dbc73a
AM
3879#ifdef DEBUG
3880 fprintf (stderr,
3881 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3882 lsect->name, (long) linker_section_ptr->offset,
3883 (long) lsect->section->size);
3884#endif
7619e7c7
AM
3885
3886 return TRUE;
41fcb14e
AM
3887}
3888
e054468f 3889static struct plt_entry **
25dbc73a
AM
3890update_local_sym_info (bfd *abfd,
3891 Elf_Internal_Shdr *symtab_hdr,
3892 unsigned long r_symndx,
3893 int tls_type)
252b5132 3894{
25dbc73a 3895 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
e054468f 3896 struct plt_entry **local_plt;
25dbc73a 3897 char *local_got_tls_masks;
252b5132 3898
25dbc73a 3899 if (local_got_refcounts == NULL)
252b5132 3900 {
25dbc73a
AM
3901 bfd_size_type size = symtab_hdr->sh_info;
3902
e054468f
AM
3903 size *= (sizeof (*local_got_refcounts)
3904 + sizeof (*local_plt)
3905 + sizeof (*local_got_tls_masks));
25dbc73a
AM
3906 local_got_refcounts = bfd_zalloc (abfd, size);
3907 if (local_got_refcounts == NULL)
e054468f 3908 return NULL;
25dbc73a 3909 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3910 }
41fcb14e 3911
e054468f
AM
3912 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3913 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
25dbc73a 3914 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
3915 if (tls_type != PLT_IFUNC)
3916 local_got_refcounts[r_symndx] += 1;
3917 return local_plt + r_symndx;
25dbc73a 3918}
41fcb14e 3919
a6aa5195 3920static bfd_boolean
3ec01793 3921update_plt_info (bfd *abfd, struct plt_entry **plist,
a6aa5195
AM
3922 asection *sec, bfd_vma addend)
3923{
3924 struct plt_entry *ent;
3925
32af9f6e
AM
3926 if (addend < 32768)
3927 sec = NULL;
3ec01793 3928 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3929 if (ent->sec == sec && ent->addend == addend)
3930 break;
3931 if (ent == NULL)
3932 {
3933 bfd_size_type amt = sizeof (*ent);
3934 ent = bfd_alloc (abfd, amt);
3935 if (ent == NULL)
3936 return FALSE;
3ec01793 3937 ent->next = *plist;
a6aa5195
AM
3938 ent->sec = sec;
3939 ent->addend = addend;
3940 ent->plt.refcount = 0;
3ec01793 3941 *plist = ent;
a6aa5195
AM
3942 }
3943 ent->plt.refcount += 1;
3944 return TRUE;
3945}
3946
3947static struct plt_entry *
3ec01793 3948find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
a6aa5195
AM
3949{
3950 struct plt_entry *ent;
3951
3952 if (addend < 32768)
3953 sec = NULL;
3ec01793 3954 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3955 if (ent->sec == sec && ent->addend == addend)
3956 break;
3957 return ent;
3958}
3959
e054468f
AM
3960static bfd_boolean
3961is_branch_reloc (enum elf_ppc_reloc_type r_type)
3962{
3963 return (r_type == R_PPC_PLTREL24
3964 || r_type == R_PPC_LOCAL24PC
3965 || r_type == R_PPC_REL24
3966 || r_type == R_PPC_REL14
3967 || r_type == R_PPC_REL14_BRTAKEN
3968 || r_type == R_PPC_REL14_BRNTAKEN
3969 || r_type == R_PPC_ADDR24
3970 || r_type == R_PPC_ADDR14
3971 || r_type == R_PPC_ADDR14_BRTAKEN
dfdaec14
AJ
3972 || r_type == R_PPC_ADDR14_BRNTAKEN
3973 || r_type == R_PPC_VLE_REL24);
e054468f
AM
3974}
3975
25dbc73a
AM
3976static void
3977bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3978{
4eca0228 3979 _bfd_error_handler
695344c0 3980 /* xgettext:c-format */
25dbc73a
AM
3981 (_("%B: relocation %s cannot be used when making a shared object"),
3982 abfd,
3983 ppc_elf_howto_table[r_type]->name);
3984 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3985}
3986
25dbc73a
AM
3987/* Look through the relocs for a section during the first phase, and
3988 allocate space in the global offset table or procedure linkage
3989 table. */
252b5132 3990
b34976b6 3991static bfd_boolean
25dbc73a
AM
3992ppc_elf_check_relocs (bfd *abfd,
3993 struct bfd_link_info *info,
3994 asection *sec,
3995 const Elf_Internal_Rela *relocs)
252b5132 3996{
7619e7c7 3997 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3998 Elf_Internal_Shdr *symtab_hdr;
3999 struct elf_link_hash_entry **sym_hashes;
4000 const Elf_Internal_Rela *rel;
4001 const Elf_Internal_Rela *rel_end;
a6aa5195 4002 asection *got2, *sreloc;
727fc41e 4003 struct elf_link_hash_entry *tga;
25dbc73a 4004
0e1862bb 4005 if (bfd_link_relocatable (info))
25dbc73a 4006 return TRUE;
252b5132 4007
c87b5a93
AM
4008 /* Don't do anything special with non-loaded, non-alloced sections.
4009 In particular, any relocs in such sections should not affect GOT
4010 and PLT reference counting (ie. we don't allow them to create GOT
4011 or PLT entries), there's no possibility or desire to optimize TLS
4012 relocs, and there's not much point in propagating relocs to shared
4013 libs that the dynamic linker won't relocate. */
4014 if ((sec->flags & SEC_ALLOC) == 0)
4015 return TRUE;
4016
252b5132 4017#ifdef DEBUG
25dbc73a
AM
4018 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4019 sec, abfd);
252b5132
RH
4020#endif
4021
0c8d6e5c 4022 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 4023
25dbc73a
AM
4024 /* Initialize howto table if not already done. */
4025 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4026 ppc_elf_howto_init ();
4027
7619e7c7 4028 htab = ppc_elf_hash_table (info);
25f23106
AM
4029 if (htab->glink == NULL)
4030 {
4031 if (htab->elf.dynobj == NULL)
4032 htab->elf.dynobj = abfd;
4033 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4034 return FALSE;
4035 }
727fc41e
AM
4036 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4037 FALSE, FALSE, TRUE);
0ffa91dd 4038 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 4039 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 4040 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4041 sreloc = NULL;
4042
4043 rel_end = relocs + sec->reloc_count;
4044 for (rel = relocs; rel < rel_end; rel++)
4045 {
4046 unsigned long r_symndx;
4047 enum elf_ppc_reloc_type r_type;
4048 struct elf_link_hash_entry *h;
727fc41e 4049 int tls_type;
cbf95972 4050 struct plt_entry **ifunc;
25dbc73a
AM
4051
4052 r_symndx = ELF32_R_SYM (rel->r_info);
4053 if (r_symndx < symtab_hdr->sh_info)
4054 h = NULL;
4055 else
973a3492
L
4056 {
4057 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4058 while (h->root.type == bfd_link_hash_indirect
4059 || h->root.type == bfd_link_hash_warning)
4060 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM
4061
4062 /* PR15323, ref flags aren't set for references in the same
4063 object. */
bc4e12de 4064 h->root.non_ir_ref_regular = 1;
973a3492 4065 }
25dbc73a
AM
4066
4067 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4068 This shows up in particular in an R_PPC_ADDR32 in the eabi
4069 startup code. */
3b36f7e6 4070 if (h != NULL
ce558b89 4071 && htab->elf.sgot == NULL
3b36f7e6 4072 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 4073 {
3b36f7e6
AM
4074 if (htab->elf.dynobj == NULL)
4075 htab->elf.dynobj = abfd;
4076 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4077 return FALSE;
4078 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 4079 }
252b5132 4080
727fc41e 4081 tls_type = 0;
de972ffa 4082 r_type = ELF32_R_TYPE (rel->r_info);
cbf95972 4083 ifunc = NULL;
06a162cf 4084 if (h == NULL && !htab->is_vxworks)
e054468f 4085 {
06a162cf
AM
4086 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4087 abfd, r_symndx);
4088 if (isym == NULL)
4089 return FALSE;
4090
0bed072f 4091 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
e054468f 4092 {
0bed072f 4093 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
06a162cf
AM
4094 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4095 PLT_IFUNC);
4096 if (ifunc == NULL)
e054468f
AM
4097 return FALSE;
4098
06a162cf
AM
4099 /* STT_GNU_IFUNC symbols must have a PLT entry;
4100 In a non-pie executable even when there are
4101 no plt calls. */
0e1862bb 4102 if (!bfd_link_pic (info)
0bed072f 4103 || is_branch_reloc (r_type))
e054468f 4104 {
0bed072f
AM
4105 bfd_vma addend = 0;
4106 if (r_type == R_PPC_PLTREL24)
4107 {
4108 ppc_elf_tdata (abfd)->makes_plt_call = 1;
0e1862bb 4109 if (bfd_link_pic (info))
0bed072f
AM
4110 addend = rel->r_addend;
4111 }
4112 if (!update_plt_info (abfd, ifunc, got2, addend))
4113 return FALSE;
e054468f
AM
4114 }
4115 }
25f23106
AM
4116 }
4117
de972ffa
AM
4118 if (!htab->is_vxworks
4119 && is_branch_reloc (r_type)
4120 && h != NULL
4121 && h == tga)
25f23106 4122 {
de972ffa
AM
4123 if (rel != relocs
4124 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4125 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4126 /* We have a new-style __tls_get_addr call with a marker
4127 reloc. */
4128 ;
4129 else
4130 /* Mark this section as having an old-style call. */
4131 sec->has_tls_get_addr_call = 1;
e054468f 4132 }
727fc41e 4133
25dbc73a
AM
4134 switch (r_type)
4135 {
727fc41e
AM
4136 case R_PPC_TLSGD:
4137 case R_PPC_TLSLD:
4138 /* These special tls relocs tie a call to __tls_get_addr with
4139 its parameter symbol. */
4140 break;
4141
25dbc73a
AM
4142 case R_PPC_GOT_TLSLD16:
4143 case R_PPC_GOT_TLSLD16_LO:
4144 case R_PPC_GOT_TLSLD16_HI:
4145 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4146 tls_type = TLS_TLS | TLS_LD;
4147 goto dogottls;
252b5132 4148
25dbc73a
AM
4149 case R_PPC_GOT_TLSGD16:
4150 case R_PPC_GOT_TLSGD16_LO:
4151 case R_PPC_GOT_TLSGD16_HI:
4152 case R_PPC_GOT_TLSGD16_HA:
4153 tls_type = TLS_TLS | TLS_GD;
4154 goto dogottls;
4155
4156 case R_PPC_GOT_TPREL16:
4157 case R_PPC_GOT_TPREL16_LO:
4158 case R_PPC_GOT_TPREL16_HI:
4159 case R_PPC_GOT_TPREL16_HA:
7c8bbca5 4160 if (bfd_link_dll (info))
25dbc73a
AM
4161 info->flags |= DF_STATIC_TLS;
4162 tls_type = TLS_TLS | TLS_TPREL;
4163 goto dogottls;
4164
4165 case R_PPC_GOT_DTPREL16:
4166 case R_PPC_GOT_DTPREL16_LO:
4167 case R_PPC_GOT_DTPREL16_HI:
4168 case R_PPC_GOT_DTPREL16_HA:
4169 tls_type = TLS_TLS | TLS_DTPREL;
4170 dogottls:
4171 sec->has_tls_reloc = 1;
1a0670f3 4172 /* Fall through. */
252b5132 4173
25dbc73a
AM
4174 /* GOT16 relocations */
4175 case R_PPC_GOT16:
4176 case R_PPC_GOT16_LO:
4177 case R_PPC_GOT16_HI:
4178 case R_PPC_GOT16_HA:
4179 /* This symbol requires a global offset table entry. */
ce558b89 4180 if (htab->elf.sgot == NULL)
25dbc73a
AM
4181 {
4182 if (htab->elf.dynobj == NULL)
4183 htab->elf.dynobj = abfd;
4184 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4185 return FALSE;
4186 }
4187 if (h != NULL)
4188 {
4189 h->got.refcount += 1;
4190 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4191 }
4192 else
4193 /* This is a global offset table entry for a local symbol. */
4194 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4195 return FALSE;
91e21fb7
AM
4196
4197 /* We may also need a plt entry if the symbol turns out to be
4198 an ifunc. */
0e1862bb 4199 if (h != NULL && !bfd_link_pic (info))
91e21fb7
AM
4200 {
4201 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4202 return FALSE;
4203 }
25dbc73a 4204 break;
252b5132 4205
25dbc73a
AM
4206 /* Indirect .sdata relocation. */
4207 case R_PPC_EMB_SDAI16:
0e1862bb 4208 if (bfd_link_pic (info))
25dbc73a
AM
4209 {
4210 bad_shared_reloc (abfd, r_type);
4211 return FALSE;
4212 }
93d1b056
AM
4213 htab->sdata[0].sym->ref_regular = 1;
4214 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4215 h, rel))
25dbc73a 4216 return FALSE;
046183de
AM
4217 if (h != NULL)
4218 {
4219 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4220 h->non_got_ref = TRUE;
4221 }
25dbc73a 4222 break;
252b5132 4223
25dbc73a
AM
4224 /* Indirect .sdata2 relocation. */
4225 case R_PPC_EMB_SDA2I16:
0e1862bb 4226 if (bfd_link_pic (info))
25dbc73a
AM
4227 {
4228 bad_shared_reloc (abfd, r_type);
4229 return FALSE;
4230 }
93d1b056
AM
4231 htab->sdata[1].sym->ref_regular = 1;
4232 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4233 h, rel))
25dbc73a 4234 return FALSE;
046183de
AM
4235 if (h != NULL)
4236 {
4237 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4238 h->non_got_ref = TRUE;
4239 }
25dbc73a 4240 break;
252b5132 4241
93d1b056
AM
4242 case R_PPC_SDAREL16:
4243 htab->sdata[0].sym->ref_regular = 1;
1a0670f3 4244 /* Fall through. */
93d1b056 4245
b9c361e0
JL
4246 case R_PPC_VLE_SDAREL_LO16A:
4247 case R_PPC_VLE_SDAREL_LO16D:
4248 case R_PPC_VLE_SDAREL_HI16A:
4249 case R_PPC_VLE_SDAREL_HI16D:
4250 case R_PPC_VLE_SDAREL_HA16A:
4251 case R_PPC_VLE_SDAREL_HA16D:
046183de
AM
4252 if (h != NULL)
4253 {
4254 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4255 h->non_got_ref = TRUE;
4256 }
4257 break;
4258
b9c361e0
JL
4259 case R_PPC_VLE_REL8:
4260 case R_PPC_VLE_REL15:
4261 case R_PPC_VLE_REL24:
4262 case R_PPC_VLE_LO16A:
4263 case R_PPC_VLE_LO16D:
4264 case R_PPC_VLE_HI16A:
4265 case R_PPC_VLE_HI16D:
4266 case R_PPC_VLE_HA16A:
4267 case R_PPC_VLE_HA16D:
4268 break;
4269
25dbc73a 4270 case R_PPC_EMB_SDA2REL:
0e1862bb 4271 if (bfd_link_pic (info))
046183de
AM
4272 {
4273 bad_shared_reloc (abfd, r_type);
4274 return FALSE;
4275 }
93d1b056 4276 htab->sdata[1].sym->ref_regular = 1;
046183de
AM
4277 if (h != NULL)
4278 {
4279 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4280 h->non_got_ref = TRUE;
4281 }
4282 break;
4283
b9c361e0
JL
4284 case R_PPC_VLE_SDA21_LO:
4285 case R_PPC_VLE_SDA21:
25dbc73a
AM
4286 case R_PPC_EMB_SDA21:
4287 case R_PPC_EMB_RELSDA:
0e1862bb 4288 if (bfd_link_pic (info))
046183de
AM
4289 {
4290 bad_shared_reloc (abfd, r_type);
4291 return FALSE;
4292 }
046183de
AM
4293 if (h != NULL)
4294 {
4295 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4296 h->non_got_ref = TRUE;
4297 }
4298 break;
4299
25dbc73a
AM
4300 case R_PPC_EMB_NADDR32:
4301 case R_PPC_EMB_NADDR16:
4302 case R_PPC_EMB_NADDR16_LO:
4303 case R_PPC_EMB_NADDR16_HI:
4304 case R_PPC_EMB_NADDR16_HA:
0e1862bb 4305 if (bfd_link_pic (info))
25dbc73a
AM
4306 {
4307 bad_shared_reloc (abfd, r_type);
4308 return FALSE;
4309 }
4dc4a9a5 4310 if (h != NULL)
046183de 4311 h->non_got_ref = TRUE;
25dbc73a 4312 break;
252b5132 4313
25dbc73a 4314 case R_PPC_PLTREL24:
de972ffa 4315 if (h == NULL)
6d78d0b9
AM
4316 break;
4317 /* Fall through */
4318 case R_PPC_PLT32:
25dbc73a
AM
4319 case R_PPC_PLTREL32:
4320 case R_PPC_PLT16_LO:
4321 case R_PPC_PLT16_HI:
4322 case R_PPC_PLT16_HA:
4323#ifdef DEBUG
4324 fprintf (stderr, "Reloc requires a PLT entry\n");
4325#endif
cbf95972 4326 /* This symbol requires a procedure linkage table entry. */
25dbc73a
AM
4327 if (h == NULL)
4328 {
cbf95972
AM
4329 if (ifunc == NULL)
4330 {
4331 /* It does not make sense to have a procedure linkage
4332 table entry for a non-ifunc local symbol. */
4333 info->callbacks->einfo
695344c0 4334 /* xgettext:c-format */
174d0a74 4335 (_("%H: %s reloc against local symbol\n"),
cbf95972
AM
4336 abfd, sec, rel->r_offset,
4337 ppc_elf_howto_table[r_type]->name);
4338 bfd_set_error (bfd_error_bad_value);
4339 return FALSE;
4340 }
25dbc73a 4341 }
a6aa5195
AM
4342 else
4343 {
016687f8 4344 bfd_vma addend = 0;
ee05f2fe 4345
016687f8
AM
4346 if (r_type == R_PPC_PLTREL24)
4347 {
4348 ppc_elf_tdata (abfd)->makes_plt_call = 1;
0e1862bb 4349 if (bfd_link_pic (info))
a877a2b6 4350 addend = rel->r_addend;
016687f8 4351 }
a6aa5195 4352 h->needs_plt = 1;
32af9f6e 4353 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
a6aa5195
AM
4354 return FALSE;
4355 }
25dbc73a 4356 break;
ee05f2fe 4357
25dbc73a
AM
4358 /* The following relocations don't need to propagate the
4359 relocation if linking a shared object since they are
4360 section relative. */
4361 case R_PPC_SECTOFF:
4362 case R_PPC_SECTOFF_LO:
4363 case R_PPC_SECTOFF_HI:
4364 case R_PPC_SECTOFF_HA:
4365 case R_PPC_DTPREL16:
4366 case R_PPC_DTPREL16_LO:
4367 case R_PPC_DTPREL16_HI:
4368 case R_PPC_DTPREL16_HA:
4369 case R_PPC_TOC16:
4370 break;
252b5132 4371
d7128ce4
AM
4372 case R_PPC_REL16:
4373 case R_PPC_REL16_LO:
4374 case R_PPC_REL16_HI:
4375 case R_PPC_REL16_HA:
a680de9a 4376 case R_PPC_REL16DX_HA:
016687f8 4377 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
4378 break;
4379
a6aa5195 4380 /* These are just markers. */
25dbc73a
AM
4381 case R_PPC_TLS:
4382 case R_PPC_EMB_MRKREF:
4383 case R_PPC_NONE:
4384 case R_PPC_max:
32af9f6e
AM
4385 case R_PPC_RELAX:
4386 case R_PPC_RELAX_PLT:
4387 case R_PPC_RELAX_PLTREL24:
7ba71655 4388 case R_PPC_16DX_HA:
25dbc73a 4389 break;
252b5132 4390
25dbc73a
AM
4391 /* These should only appear in dynamic objects. */
4392 case R_PPC_COPY:
4393 case R_PPC_GLOB_DAT:
4394 case R_PPC_JMP_SLOT:
4395 case R_PPC_RELATIVE:
e054468f 4396 case R_PPC_IRELATIVE:
25dbc73a 4397 break;
252b5132 4398
25dbc73a
AM
4399 /* These aren't handled yet. We'll report an error later. */
4400 case R_PPC_ADDR30:
4401 case R_PPC_EMB_RELSEC16:
4402 case R_PPC_EMB_RELST_LO:
4403 case R_PPC_EMB_RELST_HI:
4404 case R_PPC_EMB_RELST_HA:
4405 case R_PPC_EMB_BIT_FLD:
4406 break;
252b5132 4407
25dbc73a
AM
4408 /* This refers only to functions defined in the shared library. */
4409 case R_PPC_LOCAL24PC:
727fc41e 4410 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
4411 {
4412 htab->plt_type = PLT_OLD;
4413 htab->old_bfd = abfd;
4414 }
c7e17e05
AM
4415 if (h != NULL && h->type == STT_GNU_IFUNC)
4416 {
c7e17e05
AM
4417 h->needs_plt = 1;
4418 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4419 return FALSE;
4420 }
25dbc73a 4421 break;
252b5132 4422
25dbc73a
AM
4423 /* This relocation describes the C++ object vtable hierarchy.
4424 Reconstruct it for later use during GC. */
4425 case R_PPC_GNU_VTINHERIT:
4426 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4427 return FALSE;
4428 break;
252b5132 4429
25dbc73a
AM
4430 /* This relocation describes which C++ vtable entries are actually
4431 used. Record for later use during GC. */
4432 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
4433 BFD_ASSERT (h != NULL);
4434 if (h != NULL
4435 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
4436 return FALSE;
4437 break;
252b5132 4438
7c8bbca5 4439 /* We shouldn't really be seeing TPREL32. */
25dbc73a 4440 case R_PPC_TPREL32:
1d483afe
AM
4441 case R_PPC_TPREL16:
4442 case R_PPC_TPREL16_LO:
4443 case R_PPC_TPREL16_HI:
4444 case R_PPC_TPREL16_HA:
7c8bbca5 4445 if (bfd_link_dll (info))
25dbc73a
AM
4446 info->flags |= DF_STATIC_TLS;
4447 goto dodyn;
252b5132 4448
25dbc73a
AM
4449 /* Nor these. */
4450 case R_PPC_DTPMOD32:
4451 case R_PPC_DTPREL32:
4452 goto dodyn;
252b5132 4453
9edfd1af
AM
4454 case R_PPC_REL32:
4455 if (h == NULL
4456 && got2 != NULL
4457 && (sec->flags & SEC_CODE) != 0
0e1862bb 4458 && bfd_link_pic (info)
4a3dc543 4459 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
4460 {
4461 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4462 the start of a function, which assembles to a REL32
4463 reference to .got2. If we detect one of these, then
4464 force the old PLT layout because the linker cannot
4465 reliably deduce the GOT pointer value needed for
4466 PLT call stubs. */
4467 asection *s;
87d72d41 4468 Elf_Internal_Sym *isym;
9edfd1af 4469
87d72d41
AM
4470 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4471 abfd, r_symndx);
4472 if (isym == NULL)
4473 return FALSE;
4474
4475 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
9edfd1af 4476 if (s == got2)
016687f8
AM
4477 {
4478 htab->plt_type = PLT_OLD;
4479 htab->old_bfd = abfd;
4480 }
9edfd1af 4481 }
7123df0e 4482 if (h == NULL || h == htab->elf.hgot)
fd38b44c 4483 break;
625af618
AM
4484 /* fall through */
4485
4486 case R_PPC_ADDR32:
4487 case R_PPC_ADDR16:
4488 case R_PPC_ADDR16_LO:
4489 case R_PPC_ADDR16_HI:
4490 case R_PPC_ADDR16_HA:
4491 case R_PPC_UADDR32:
4492 case R_PPC_UADDR16:
0e1862bb 4493 if (h != NULL && !bfd_link_pic (info))
625af618
AM
4494 {
4495 /* We may need a plt entry if the symbol turns out to be
4496 a function defined in a dynamic object. */
3ec01793 4497 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
625af618
AM
4498 return FALSE;
4499
4500 /* We may need a copy reloc too. */
4501 h->non_got_ref = 1;
4502 h->pointer_equality_needed = 1;
d3e454b9
AM
4503 if (r_type == R_PPC_ADDR16_HA)
4504 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4505 if (r_type == R_PPC_ADDR16_LO)
4506 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
625af618
AM
4507 }
4508 goto dodyn;
9edfd1af 4509
25dbc73a
AM
4510 case R_PPC_REL24:
4511 case R_PPC_REL14:
4512 case R_PPC_REL14_BRTAKEN:
4513 case R_PPC_REL14_BRNTAKEN:
d7128ce4 4514 if (h == NULL)
25dbc73a 4515 break;
7123df0e 4516 if (h == htab->elf.hgot)
d7128ce4 4517 {
7123df0e 4518 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4519 {
4520 htab->plt_type = PLT_OLD;
4521 htab->old_bfd = abfd;
4522 }
d7128ce4
AM
4523 break;
4524 }
25dbc73a 4525 /* fall through */
ee05f2fe 4526
25dbc73a 4527 case R_PPC_ADDR24:
25dbc73a
AM
4528 case R_PPC_ADDR14:
4529 case R_PPC_ADDR14_BRTAKEN:
4530 case R_PPC_ADDR14_BRNTAKEN:
0e1862bb 4531 if (h != NULL && !bfd_link_pic (info))
25dbc73a
AM
4532 {
4533 /* We may need a plt entry if the symbol turns out to be
4534 a function defined in a dynamic object. */
e054468f 4535 h->needs_plt = 1;
de972ffa 4536 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
a6aa5195 4537 return FALSE;
625af618 4538 break;
25dbc73a 4539 }
7619e7c7 4540
25dbc73a
AM
4541 dodyn:
4542 /* If we are creating a shared library, and this is a reloc
4543 against a global symbol, or a non PC relative reloc
4544 against a local symbol, then we need to copy the reloc
4545 into the shared library. However, if we are linking with
4546 -Bsymbolic, we do not need to copy a reloc against a
4547 global symbol which is defined in an object we are
4548 including in the link (i.e., DEF_REGULAR is set). At
4549 this point we have not seen all the input files, so it is
4550 possible that DEF_REGULAR is not set now but will be set
4551 later (it is never cleared). In case of a weak definition,
4552 DEF_REGULAR may be cleared later by a strong definition in
4553 a shared library. We account for that possibility below by
4554 storing information in the dyn_relocs field of the hash
4555 table entry. A similar situation occurs when creating
4556 shared libraries and symbol visibility changes render the
4557 symbol local.
7619e7c7 4558
25dbc73a
AM
4559 If on the other hand, we are creating an executable, we
4560 may need to keep relocations for symbols satisfied by a
4561 dynamic library if we manage to avoid copy relocs for the
4562 symbol. */
0e1862bb 4563 if ((bfd_link_pic (info)
1d483afe 4564 && (must_be_dyn_reloc (info, r_type)
25dbc73a 4565 || (h != NULL
198f1157 4566 && (!SYMBOLIC_BIND (info, h)
25dbc73a
AM
4567 || h->root.type == bfd_link_hash_defweak
4568 || !h->def_regular))))
4569 || (ELIMINATE_COPY_RELOCS
0e1862bb 4570 && !bfd_link_pic (info)
25dbc73a
AM
4571 && h != NULL
4572 && (h->root.type == bfd_link_hash_defweak
de972ffa 4573 || !h->def_regular)))
25dbc73a 4574 {
25dbc73a
AM
4575#ifdef DEBUG
4576 fprintf (stderr,
4577 "ppc_elf_check_relocs needs to "
4578 "create relocation for %s\n",
4579 (h && h->root.root.string
4580 ? h->root.root.string : "<unknown>"));
4581#endif
4582 if (sreloc == NULL)
4583 {
c9a2f333
AM
4584 if (htab->elf.dynobj == NULL)
4585 htab->elf.dynobj = abfd;
83bac4b0
NC
4586
4587 sreloc = _bfd_elf_make_dynamic_reloc_section
4588 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4589
25dbc73a 4590 if (sreloc == NULL)
83bac4b0 4591 return FALSE;
25dbc73a 4592 }
7619e7c7 4593
25dbc73a
AM
4594 /* If this is a global symbol, we count the number of
4595 relocations we need for this symbol. */
4596 if (h != NULL)
4597 {
f95f8542
AM
4598 struct elf_dyn_relocs *p;
4599 struct elf_dyn_relocs **rel_head;
4600
91d6fa6a 4601 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
f95f8542
AM
4602 p = *rel_head;
4603 if (p == NULL || p->sec != sec)
4604 {
4605 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4606 if (p == NULL)
4607 return FALSE;
4608 p->next = *rel_head;
4609 *rel_head = p;
4610 p->sec = sec;
4611 p->count = 0;
4612 p->pc_count = 0;
4613 }
4614 p->count += 1;
4615 if (!must_be_dyn_reloc (info, r_type))
4616 p->pc_count += 1;
25dbc73a
AM
4617 }
4618 else
4619 {
4620 /* Track dynamic relocs needed for local syms too.
4621 We really need local syms available to do this
4622 easily. Oh well. */
f95f8542
AM
4623 struct ppc_dyn_relocs *p;
4624 struct ppc_dyn_relocs **rel_head;
4625 bfd_boolean is_ifunc;
25dbc73a 4626 asection *s;
6edfbbad 4627 void *vpp;
87d72d41 4628 Elf_Internal_Sym *isym;
6edfbbad 4629
87d72d41
AM
4630 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4631 abfd, r_symndx);
4632 if (isym == NULL)
25dbc73a 4633 return FALSE;
7fce784e 4634
87d72d41
AM
4635 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4636 if (s == NULL)
4637 s = sec;
4638
6edfbbad 4639 vpp = &elf_section_data (s)->local_dynrel;
f95f8542
AM
4640 rel_head = (struct ppc_dyn_relocs **) vpp;
4641 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4642 p = *rel_head;
4643 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4644 p = p->next;
4645 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4646 {
4647 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4648 if (p == NULL)
4649 return FALSE;
4650 p->next = *rel_head;
4651 *rel_head = p;
4652 p->sec = sec;
4653 p->ifunc = is_ifunc;
4654 p->count = 0;
4655 }
4656 p->count += 1;
25dbc73a 4657 }
7619e7c7 4658 }
25dbc73a
AM
4659
4660 break;
7619e7c7
AM
4661 }
4662 }
ee05f2fe 4663
25dbc73a
AM
4664 return TRUE;
4665}
4666\f
005d79fd
AM
4667/* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4668 and OBFD, and merge non-conflicting ones. */
4669void
50e03d47 4670_bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
34c8bcba 4671{
50e03d47 4672 bfd *obfd = info->output_bfd;
c6e65352
DJ
4673 obj_attribute *in_attr, *in_attrs;
4674 obj_attribute *out_attr, *out_attrs;
34c8bcba 4675
c6e65352
DJ
4676 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4677 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4678
c6e65352
DJ
4679 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4680 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
005d79fd 4681
c6e65352 4682 if (in_attr->i != out_attr->i)
34c8bcba 4683 {
005d79fd
AM
4684 int in_fp = in_attr->i & 3;
4685 int out_fp = out_attr->i & 3;
4686
4687 if (in_fp == 0)
34c8bcba 4688 ;
005d79fd
AM
4689 else if (out_fp == 0)
4690 {
4691 out_attr->type = 1;
4692 out_attr->i ^= in_fp;
4693 }
4694 else if (out_fp != 2 && in_fp == 2)
34c8bcba 4695 _bfd_error_handler
695344c0 4696 /* xgettext:c-format */
34c8bcba 4697 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
005d79fd
AM
4698 else if (out_fp == 2 && in_fp != 2)
4699 _bfd_error_handler
695344c0 4700 /* xgettext:c-format */
005d79fd
AM
4701 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4702 else if (out_fp == 1 && in_fp == 3)
3c7b9897 4703 _bfd_error_handler
695344c0 4704 /* xgettext:c-format */
005d79fd
AM
4705 (_("Warning: %B uses double-precision hard float, "
4706 "%B uses single-precision hard float"), obfd, ibfd);
4707 else if (out_fp == 3 && in_fp == 1)
3c7b9897 4708 _bfd_error_handler
695344c0 4709 /* xgettext:c-format */
005d79fd
AM
4710 (_("Warning: %B uses double-precision hard float, "
4711 "%B uses single-precision hard float"), ibfd, obfd);
4712
4713 in_fp = in_attr->i & 0xc;
4714 out_fp = out_attr->i & 0xc;
4715 if (in_fp == 0)
4716 ;
4717 else if (out_fp == 0)
4718 {
4719 out_attr->type = 1;
4720 out_attr->i ^= in_fp;
4721 }
4722 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
3c7b9897 4723 _bfd_error_handler
695344c0 4724 /* xgettext:c-format */
005d79fd
AM
4725 (_("Warning: %B uses 64-bit long double, "
4726 "%B uses 128-bit long double"), ibfd, obfd);
4727 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
34c8bcba 4728 _bfd_error_handler
695344c0 4729 /* xgettext:c-format */
005d79fd
AM
4730 (_("Warning: %B uses 64-bit long double, "
4731 "%B uses 128-bit long double"), obfd, ibfd);
4732 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
34c8bcba 4733 _bfd_error_handler
695344c0 4734 /* xgettext:c-format */
005d79fd
AM
4735 (_("Warning: %B uses IBM long double, "
4736 "%B uses IEEE long double"), ibfd, obfd);
4737 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
34c8bcba 4738 _bfd_error_handler
695344c0 4739 /* xgettext:c-format */
005d79fd
AM
4740 (_("Warning: %B uses IBM long double, "
4741 "%B uses IEEE long double"), obfd, ibfd);
c6e65352 4742 }
005d79fd
AM
4743}
4744
4745/* Merge object attributes from IBFD into OBFD. Warn if
4746 there are conflicting attributes. */
4747static bfd_boolean
50e03d47 4748ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
005d79fd 4749{
50e03d47 4750 bfd *obfd;
005d79fd
AM
4751 obj_attribute *in_attr, *in_attrs;
4752 obj_attribute *out_attr, *out_attrs;
4753
50e03d47 4754 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
005d79fd 4755
50e03d47 4756 obfd = info->output_bfd;
005d79fd
AM
4757 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4758 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
c6e65352
DJ
4759
4760 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4761 merge non-conflicting ones. */
4762 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4763 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4764 if (in_attr->i != out_attr->i)
4765 {
005d79fd
AM
4766 int in_vec = in_attr->i & 3;
4767 int out_vec = out_attr->i & 3;
c6e65352 4768
005d79fd
AM
4769 if (in_vec == 0)
4770 ;
4771 else if (out_vec == 0)
c6e65352 4772 {
005d79fd
AM
4773 out_attr->type = 1;
4774 out_attr->i = in_vec;
c6e65352 4775 }
c6e65352
DJ
4776 /* For now, allow generic to transition to AltiVec or SPE
4777 without a warning. If GCC marked files with their stack
4778 alignment and used don't-care markings for files which are
4779 not affected by the vector ABI, we could warn about this
4780 case too. */
005d79fd 4781 else if (in_vec == 1)
c6e65352 4782 ;
005d79fd
AM
4783 else if (out_vec == 1)
4784 {
4785 out_attr->type = 1;
4786 out_attr->i = in_vec;
4787 }
4788 else if (out_vec < in_vec)
c6e65352 4789 _bfd_error_handler
695344c0 4790 /* xgettext:c-format */
005d79fd
AM
4791 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4792 obfd, ibfd);
4793 else if (out_vec > in_vec)
c6e65352 4794 _bfd_error_handler
695344c0 4795 /* xgettext:c-format */
005d79fd
AM
4796 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4797 ibfd, obfd);
34c8bcba
JM
4798 }
4799
f82e0623
NF
4800 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4801 and merge non-conflicting ones. */
4802 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4803 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4804 if (in_attr->i != out_attr->i)
4805 {
005d79fd
AM
4806 int in_struct = in_attr->i & 3;
4807 int out_struct = out_attr->i & 3;
4808
4809 if (in_struct == 0 || in_struct == 3)
f82e0623 4810 ;
005d79fd
AM
4811 else if (out_struct == 0)
4812 {
4813 out_attr->type = 1;
4814 out_attr->i = in_struct;
4815 }
4816 else if (out_struct < in_struct)
4817 _bfd_error_handler
695344c0 4818 /* xgettext:c-format */
005d79fd
AM
4819 (_("Warning: %B uses r3/r4 for small structure returns, "
4820 "%B uses memory"), obfd, ibfd);
4821 else if (out_struct > in_struct)
4822 _bfd_error_handler
695344c0 4823 /* xgettext:c-format */
005d79fd
AM
4824 (_("Warning: %B uses r3/r4 for small structure returns, "
4825 "%B uses memory"), ibfd, obfd);
f82e0623
NF
4826 }
4827
34c8bcba 4828 /* Merge Tag_compatibility attributes and any common GNU ones. */
50e03d47 4829 _bfd_elf_merge_object_attributes (ibfd, info);
34c8bcba
JM
4830
4831 return TRUE;
4832}
4833
8853c3d3
AM
4834/* Merge backend specific data from an object file to the output
4835 object file when linking. */
4836
4837static bfd_boolean
50e03d47 4838ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
8853c3d3 4839{
50e03d47 4840 bfd *obfd = info->output_bfd;
8853c3d3
AM
4841 flagword old_flags;
4842 flagword new_flags;
4843 bfd_boolean error;
4844
0c8d6e5c 4845 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4846 return TRUE;
4847
cc643b88 4848 /* Check if we have the same endianness. */
50e03d47 4849 if (! _bfd_generic_verify_endian_match (ibfd, info))
8853c3d3
AM
4850 return FALSE;
4851
50e03d47 4852 if (!ppc_elf_merge_obj_attributes (ibfd, info))
34c8bcba
JM
4853 return FALSE;
4854
8853c3d3
AM
4855 new_flags = elf_elfheader (ibfd)->e_flags;
4856 old_flags = elf_elfheader (obfd)->e_flags;
4857 if (!elf_flags_init (obfd))
4858 {
4859 /* First call, no flags set. */
4860 elf_flags_init (obfd) = TRUE;
4861 elf_elfheader (obfd)->e_flags = new_flags;
4862 }
4863
4864 /* Compatible flags are ok. */
4865 else if (new_flags == old_flags)
4866 ;
4867
4868 /* Incompatible flags. */
4869 else
4870 {
4871 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4872 to be linked with either. */
4873 error = FALSE;
4874 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4875 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4876 {
4877 error = TRUE;
4eca0228 4878 _bfd_error_handler
8853c3d3
AM
4879 (_("%B: compiled with -mrelocatable and linked with "
4880 "modules compiled normally"), ibfd);
4881 }
4882 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4883 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4884 {
4885 error = TRUE;
4eca0228 4886 _bfd_error_handler
8853c3d3
AM
4887 (_("%B: compiled normally and linked with "
4888 "modules compiled with -mrelocatable"), ibfd);
4889 }
4890
4891 /* The output is -mrelocatable-lib iff both the input files are. */
4892 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4893 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4894
4895 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4896 but each input file is either -mrelocatable or -mrelocatable-lib. */
4897 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4898 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4899 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4900 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4901
4902 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4903 any module uses it. */
4904 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4905
4906 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4907 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4908
4909 /* Warn about any other mismatches. */
4910 if (new_flags != old_flags)
4911 {
4912 error = TRUE;
4eca0228 4913 _bfd_error_handler
695344c0 4914 /* xgettext:c-format */
cd9af601
AM
4915 (_("%B: uses different e_flags (%#x) fields "
4916 "than previous modules (%#x)"),
4917 ibfd, new_flags, old_flags);
8853c3d3
AM
4918 }
4919
4920 if (error)
4921 {
4922 bfd_set_error (bfd_error_bad_value);
4923 return FALSE;
4924 }
4925 }
4926
4927 return TRUE;
4928}
b9c361e0
JL
4929
4930static void
95f0d0d2 4931ppc_elf_vle_split16 (bfd *input_bfd,
08dc996f
AM
4932 asection *input_section,
4933 unsigned long offset,
95f0d0d2 4934 bfd_byte *loc,
86c95733 4935 bfd_vma value,
08dc996f
AM
4936 split16_format_type split16_format,
4937 bfd_boolean fixup)
b9c361e0 4938{
08dc996f 4939 unsigned int insn, opcode, top5;
b9c361e0 4940
95f0d0d2 4941 insn = bfd_get_32 (input_bfd, loc);
673cff9b 4942 opcode = insn & 0xfc00f800;
08dc996f
AM
4943 if (opcode == E_OR2I_INSN
4944 || opcode == E_AND2I_DOT_INSN
4945 || opcode == E_OR2IS_INSN
4946 || opcode == E_LIS_INSN
4947 || opcode == E_AND2IS_DOT_INSN)
4948 {
4949 if (split16_format != split16a_type)
4950 {
4951 if (fixup)
4952 split16_format = split16a_type;
4953 else
4954 _bfd_error_handler
4955 /* xgettext:c-format */
4956 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4957 input_bfd, input_section, offset, opcode);
4958 }
4959 }
4960 else if (opcode == E_ADD2I_DOT_INSN
4961 || opcode == E_ADD2IS_INSN
4962 || opcode == E_CMP16I_INSN
4963 || opcode == E_MULL2I_INSN
4964 || opcode == E_CMPL16I_INSN
4965 || opcode == E_CMPH16I_INSN
4966 || opcode == E_CMPHL16I_INSN)
4967 {
4968 if (split16_format != split16d_type)
4969 {
4970 if (fixup)
4971 split16_format = split16d_type;
4972 else
4973 _bfd_error_handler
4974 /* xgettext:c-format */
4975 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4976 input_bfd, input_section, offset, opcode);
4977 }
4978 }
86c95733 4979 top5 = value & 0xf800;
5499c7c7
AM
4980 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4981 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
b9c361e0 4982 insn |= top5;
86c95733 4983 insn |= value & 0x7ff;
95f0d0d2 4984 bfd_put_32 (input_bfd, insn, loc);
b9c361e0 4985}
8853c3d3 4986\f
d7128ce4
AM
4987/* Choose which PLT scheme to use, and set .plt flags appropriately.
4988 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4989int
4990ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
5446cbdf 4991 struct bfd_link_info *info)
d7128ce4
AM
4992{
4993 struct ppc_elf_link_hash_table *htab;
9d8504b1 4994 flagword flags;
d7128ce4
AM
4995
4996 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4997
4998 if (htab->plt_type == PLT_UNSET)
016687f8 4999 {
b3874e1a
AM
5000 struct elf_link_hash_entry *h;
5001
5446cbdf 5002 if (htab->params->plt_style == PLT_OLD)
016687f8 5003 htab->plt_type = PLT_OLD;
0e1862bb 5004 else if (bfd_link_pic (info)
b3874e1a
AM
5005 && htab->elf.dynamic_sections_created
5006 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
5007 FALSE, FALSE, TRUE)) != NULL
5008 && (h->type == STT_FUNC
5009 || h->needs_plt)
5010 && h->ref_regular
5011 && !(SYMBOL_CALLS_LOCAL (info, h)
21d68fcd 5012 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
b3874e1a
AM
5013 {
5014 /* Profiling of shared libs (and pies) is not supported with
5015 secure plt, because ppc32 does profiling before a
5016 function prologue and a secure plt pic call stubs needs
5017 r30 to be set up. */
5018 htab->plt_type = PLT_OLD;
5019 }
016687f8
AM
5020 else
5021 {
5022 bfd *ibfd;
5446cbdf 5023 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
016687f8
AM
5024
5025 /* Look through the reloc flags left by ppc_elf_check_relocs.
5026 Use the old style bss plt if a file makes plt calls
5027 without using the new relocs, and if ld isn't given
5028 --secure-plt and we never see REL16 relocs. */
5029 if (plt_type == PLT_UNSET)
5030 plt_type = PLT_OLD;
c72f2fb2 5031 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
0c8d6e5c 5032 if (is_ppc_elf (ibfd))
016687f8
AM
5033 {
5034 if (ppc_elf_tdata (ibfd)->has_rel16)
5035 plt_type = PLT_NEW;
5036 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5037 {
5038 plt_type = PLT_OLD;
5039 htab->old_bfd = ibfd;
5040 break;
5041 }
5042 }
5043 htab->plt_type = plt_type;
5044 }
5045 }
5446cbdf 5046 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
b3874e1a
AM
5047 {
5048 if (htab->old_bfd != NULL)
5049 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5050 htab->old_bfd);
5051 else
5052 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5053 }
d7128ce4 5054
4a3dc543 5055 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 5056
4a3dc543 5057 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
5058 {
5059 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5060 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
5061
5062 /* The new PLT is a loaded section. */
ce558b89
AM
5063 if (htab->elf.splt != NULL
5064 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
86b9da88
AM
5065 return -1;
5066
5067 /* The new GOT is not executable. */
ce558b89
AM
5068 if (htab->elf.sgot != NULL
5069 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
86b9da88 5070 return -1;
d7128ce4
AM
5071 }
5072 else
5073 {
5074 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
5075 if (htab->glink != NULL
5076 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5077 return -1;
d7128ce4 5078 }
4a3dc543 5079 return htab->plt_type == PLT_NEW;
d7128ce4
AM
5080}
5081\f
25dbc73a
AM
5082/* Return the section that should be marked against GC for a given
5083 relocation. */
586119b3 5084
25dbc73a
AM
5085static asection *
5086ppc_elf_gc_mark_hook (asection *sec,
07adf181 5087 struct bfd_link_info *info,
25dbc73a
AM
5088 Elf_Internal_Rela *rel,
5089 struct elf_link_hash_entry *h,
5090 Elf_Internal_Sym *sym)
5091{
5092 if (h != NULL)
07adf181
AM
5093 switch (ELF32_R_TYPE (rel->r_info))
5094 {
5095 case R_PPC_GNU_VTINHERIT:
5096 case R_PPC_GNU_VTENTRY:
5097 return NULL;
5098 }
5099
5100 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 5101}
a876ecf9 5102
25dbc73a
AM
5103/* Update the got, plt and dynamic reloc reference counts for the
5104 section being removed. */
5105
5106static bfd_boolean
5107ppc_elf_gc_sweep_hook (bfd *abfd,
5108 struct bfd_link_info *info,
5109 asection *sec,
5110 const Elf_Internal_Rela *relocs)
5111{
5112 struct ppc_elf_link_hash_table *htab;
5113 Elf_Internal_Shdr *symtab_hdr;
5114 struct elf_link_hash_entry **sym_hashes;
5115 bfd_signed_vma *local_got_refcounts;
5116 const Elf_Internal_Rela *rel, *relend;
a6aa5195 5117 asection *got2;
25dbc73a 5118
0e1862bb 5119 if (bfd_link_relocatable (info))
7dda2462
TG
5120 return TRUE;
5121
c87b5a93
AM
5122 if ((sec->flags & SEC_ALLOC) == 0)
5123 return TRUE;
5124
25dbc73a
AM
5125 elf_section_data (sec)->local_dynrel = NULL;
5126
5127 htab = ppc_elf_hash_table (info);
0ffa91dd 5128 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
5129 sym_hashes = elf_sym_hashes (abfd);
5130 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 5131 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
5132
5133 relend = relocs + sec->reloc_count;
5134 for (rel = relocs; rel < relend; rel++)
5135 {
5136 unsigned long r_symndx;
5137 enum elf_ppc_reloc_type r_type;
5138 struct elf_link_hash_entry *h = NULL;
5139
5140 r_symndx = ELF32_R_SYM (rel->r_info);
5141 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 5142 {
6061a67d 5143 struct elf_dyn_relocs **pp, *p;
25dbc73a
AM
5144 struct ppc_elf_link_hash_entry *eh;
5145
5146 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5147 while (h->root.type == bfd_link_hash_indirect
5148 || h->root.type == bfd_link_hash_warning)
5149 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5150 eh = (struct ppc_elf_link_hash_entry *) h;
5151
5152 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5153 if (p->sec == sec)
5154 {
5155 /* Everything must go for SEC. */
5156 *pp = p->next;
5157 break;
5158 }
a876ecf9 5159 }
ee05f2fe 5160
25dbc73a 5161 r_type = ELF32_R_TYPE (rel->r_info);
de972ffa
AM
5162 if (!htab->is_vxworks
5163 && h == NULL
5164 && local_got_refcounts != NULL
0e1862bb 5165 && (!bfd_link_pic (info)
de972ffa 5166 || is_branch_reloc (r_type)))
e054468f 5167 {
de972ffa
AM
5168 struct plt_entry **local_plt = (struct plt_entry **)
5169 (local_got_refcounts + symtab_hdr->sh_info);
5170 char *local_got_tls_masks = (char *)
5171 (local_plt + symtab_hdr->sh_info);
5172 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
e054468f 5173 {
de972ffa 5174 struct plt_entry **ifunc = local_plt + r_symndx;
a877a2b6
AM
5175 bfd_vma addend = 0;
5176 struct plt_entry *ent;
5177
0e1862bb 5178 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
a877a2b6
AM
5179 addend = rel->r_addend;
5180 ent = find_plt_ent (ifunc, got2, addend);
e054468f
AM
5181 if (ent->plt.refcount > 0)
5182 ent->plt.refcount -= 1;
5183 continue;
5184 }
5185 }
5186
25dbc73a 5187 switch (r_type)
ee05f2fe 5188 {
25dbc73a
AM
5189 case R_PPC_GOT_TLSLD16:
5190 case R_PPC_GOT_TLSLD16_LO:
5191 case R_PPC_GOT_TLSLD16_HI:
5192 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
5193 case R_PPC_GOT_TLSGD16:
5194 case R_PPC_GOT_TLSGD16_LO:
5195 case R_PPC_GOT_TLSGD16_HI:
5196 case R_PPC_GOT_TLSGD16_HA:
5197 case R_PPC_GOT_TPREL16:
5198 case R_PPC_GOT_TPREL16_LO:
5199 case R_PPC_GOT_TPREL16_HI:
5200 case R_PPC_GOT_TPREL16_HA:
5201 case R_PPC_GOT_DTPREL16:
5202 case R_PPC_GOT_DTPREL16_LO:
5203 case R_PPC_GOT_DTPREL16_HI:
5204 case R_PPC_GOT_DTPREL16_HA:
5205 case R_PPC_GOT16:
5206 case R_PPC_GOT16_LO:
5207 case R_PPC_GOT16_HI:
5208 case R_PPC_GOT16_HA:
5209 if (h != NULL)
ee05f2fe 5210 {
25dbc73a
AM
5211 if (h->got.refcount > 0)
5212 h->got.refcount--;
0e1862bb 5213 if (!bfd_link_pic (info))
91e21fb7
AM
5214 {
5215 struct plt_entry *ent;
5216
5217 ent = find_plt_ent (&h->plt.plist, NULL, 0);
32af9f6e 5218 if (ent != NULL && ent->plt.refcount > 0)
91e21fb7
AM
5219 ent->plt.refcount -= 1;
5220 }
ee05f2fe 5221 }
25dbc73a
AM
5222 else if (local_got_refcounts != NULL)
5223 {
5224 if (local_got_refcounts[r_symndx] > 0)
5225 local_got_refcounts[r_symndx]--;
5226 }
5227 break;
ee05f2fe 5228
25dbc73a
AM
5229 case R_PPC_REL24:
5230 case R_PPC_REL14:
5231 case R_PPC_REL14_BRTAKEN:
5232 case R_PPC_REL14_BRNTAKEN:
5233 case R_PPC_REL32:
3b36f7e6 5234 if (h == NULL || h == htab->elf.hgot)
25dbc73a 5235 break;
1a0670f3 5236 /* Fall through. */
ee05f2fe 5237
25dbc73a
AM
5238 case R_PPC_ADDR32:
5239 case R_PPC_ADDR24:
5240 case R_PPC_ADDR16:
5241 case R_PPC_ADDR16_LO:
5242 case R_PPC_ADDR16_HI:
5243 case R_PPC_ADDR16_HA:
5244 case R_PPC_ADDR14:
5245 case R_PPC_ADDR14_BRTAKEN:
5246 case R_PPC_ADDR14_BRNTAKEN:
5247 case R_PPC_UADDR32:
5248 case R_PPC_UADDR16:
0e1862bb 5249 if (bfd_link_pic (info))
87538722 5250 break;
1a0670f3 5251 /* Fall through. */
87538722 5252
25dbc73a
AM
5253 case R_PPC_PLT32:
5254 case R_PPC_PLTREL24:
87538722 5255 case R_PPC_PLTREL32:
25dbc73a
AM
5256 case R_PPC_PLT16_LO:
5257 case R_PPC_PLT16_HI:
5258 case R_PPC_PLT16_HA:
5259 if (h != NULL)
5260 {
a877a2b6
AM
5261 bfd_vma addend = 0;
5262 struct plt_entry *ent;
5263
0e1862bb 5264 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
a877a2b6
AM
5265 addend = rel->r_addend;
5266 ent = find_plt_ent (&h->plt.plist, got2, addend);
32af9f6e 5267 if (ent != NULL && ent->plt.refcount > 0)
a6aa5195 5268 ent->plt.refcount -= 1;
25dbc73a
AM
5269 }
5270 break;
ee05f2fe 5271
25dbc73a
AM
5272 default:
5273 break;
5274 }
7fce784e 5275 }
7fce784e
AS
5276 return TRUE;
5277}
25dbc73a 5278\f
3a71aa26
AM
5279/* Set plt output section type, htab->tls_get_addr, and call the
5280 generic ELF tls_setup function. */
7fce784e 5281
25dbc73a 5282asection *
5446cbdf 5283ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 5284{
25dbc73a 5285 struct ppc_elf_link_hash_table *htab;
7fce784e 5286
25dbc73a 5287 htab = ppc_elf_hash_table (info);
a7f2871e
AM
5288 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5289 FALSE, FALSE, TRUE);
f01f1741
AM
5290 if (htab->plt_type != PLT_NEW)
5291 htab->params->no_tls_get_addr_opt = TRUE;
5292
5446cbdf 5293 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM
5294 {
5295 struct elf_link_hash_entry *opt, *tga;
5296 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5297 FALSE, FALSE, TRUE);
5298 if (opt != NULL
5299 && (opt->root.type == bfd_link_hash_defined
5300 || opt->root.type == bfd_link_hash_defweak))
5301 {
5302 /* If glibc supports an optimized __tls_get_addr call stub,
5303 signalled by the presence of __tls_get_addr_opt, and we'll
5304 be calling __tls_get_addr via a plt call stub, then
5305 make __tls_get_addr point to __tls_get_addr_opt. */
5306 tga = htab->tls_get_addr;
5307 if (htab->elf.dynamic_sections_created
5308 && tga != NULL
5309 && (tga->type == STT_FUNC
5310 || tga->needs_plt)
5311 && !(SYMBOL_CALLS_LOCAL (info, tga)
21d68fcd 5312 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
a7f2871e
AM
5313 {
5314 struct plt_entry *ent;
32af9f6e
AM
5315 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5316 if (ent->plt.refcount > 0)
5317 break;
5318 if (ent != NULL)
a7f2871e
AM
5319 {
5320 tga->root.type = bfd_link_hash_indirect;
5321 tga->root.u.i.link = &opt->root;
5322 ppc_elf_copy_indirect_symbol (info, opt, tga);
b531344c 5323 opt->mark = 1;
a7f2871e
AM
5324 if (opt->dynindx != -1)
5325 {
5326 /* Use __tls_get_addr_opt in dynamic relocations. */
5327 opt->dynindx = -1;
5328 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5329 opt->dynstr_index);
5330 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5331 return FALSE;
5332 }
5333 htab->tls_get_addr = opt;
5334 }
5335 }
5336 }
5337 else
5446cbdf 5338 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 5339 }
4a3dc543 5340 if (htab->plt_type == PLT_NEW
ce558b89
AM
5341 && htab->elf.splt != NULL
5342 && htab->elf.splt->output_section != NULL)
d7128ce4 5343 {
ce558b89
AM
5344 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5345 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
d7128ce4
AM
5346 }
5347
25dbc73a 5348 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
5349}
5350
3a71aa26
AM
5351/* Return TRUE iff REL is a branch reloc with a global symbol matching
5352 HASH. */
5353
5354static bfd_boolean
5355branch_reloc_hash_match (const bfd *ibfd,
5356 const Elf_Internal_Rela *rel,
5357 const struct elf_link_hash_entry *hash)
5358{
5359 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5360 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5361 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5362
e054468f 5363 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
3a71aa26
AM
5364 {
5365 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5366 struct elf_link_hash_entry *h;
5367
5368 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5369 while (h->root.type == bfd_link_hash_indirect
5370 || h->root.type == bfd_link_hash_warning)
5371 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5372 if (h == hash)
5373 return TRUE;
5374 }
5375 return FALSE;
5376}
5377
25dbc73a
AM
5378/* Run through all the TLS relocs looking for optimization
5379 opportunities. */
252b5132 5380
25dbc73a
AM
5381bfd_boolean
5382ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5383 struct bfd_link_info *info)
252b5132 5384{
7fce784e 5385 bfd *ibfd;
25dbc73a
AM
5386 asection *sec;
5387 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 5388 int pass;
252b5132 5389
3cbc1e5e 5390 if (!bfd_link_executable (info))
25dbc73a 5391 return TRUE;
252b5132 5392
7619e7c7 5393 htab = ppc_elf_hash_table (info);
663a1470
AM
5394 if (htab == NULL)
5395 return FALSE;
5396
b7fcf6f6
AM
5397 /* Make two passes through the relocs. First time check that tls
5398 relocs involved in setting up a tls_get_addr call are indeed
663a1470
AM
5399 followed by such a call. If they are not, don't do any tls
5400 optimization. On the second pass twiddle tls_mask flags to
5401 notify relocate_section that optimization can be done, and
5402 adjust got and plt refcounts. */
b7fcf6f6 5403 for (pass = 0; pass < 2; ++pass)
c72f2fb2 5404 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
b7fcf6f6
AM
5405 {
5406 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 5407 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
32af9f6e 5408 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
7619e7c7 5409
b7fcf6f6
AM
5410 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5411 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5412 {
5413 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 5414 int expecting_tls_get_addr = 0;
252b5132 5415
b7fcf6f6
AM
5416 /* Read the relocations. */
5417 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5418 info->keep_memory);
5419 if (relstart == NULL)
5420 return FALSE;
7619e7c7 5421
b7fcf6f6
AM
5422 relend = relstart + sec->reloc_count;
5423 for (rel = relstart; rel < relend; rel++)
5424 {
5425 enum elf_ppc_reloc_type r_type;
5426 unsigned long r_symndx;
5427 struct elf_link_hash_entry *h = NULL;
5428 char *tls_mask;
5429 char tls_set, tls_clear;
5430 bfd_boolean is_local;
b7fcf6f6
AM
5431 bfd_signed_vma *got_count;
5432
5433 r_symndx = ELF32_R_SYM (rel->r_info);
5434 if (r_symndx >= symtab_hdr->sh_info)
5435 {
5436 struct elf_link_hash_entry **sym_hashes;
7fce784e 5437
b7fcf6f6
AM
5438 sym_hashes = elf_sym_hashes (ibfd);
5439 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5440 while (h->root.type == bfd_link_hash_indirect
5441 || h->root.type == bfd_link_hash_warning)
5442 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5443 }
7619e7c7 5444
b7fcf6f6
AM
5445 is_local = FALSE;
5446 if (h == NULL
5447 || !h->def_dynamic)
5448 is_local = TRUE;
7619e7c7 5449
b7fcf6f6 5450 r_type = ELF32_R_TYPE (rel->r_info);
663a1470
AM
5451 /* If this section has old-style __tls_get_addr calls
5452 without marker relocs, then check that each
5453 __tls_get_addr call reloc is preceded by a reloc
5454 that conceivably belongs to the __tls_get_addr arg
5455 setup insn. If we don't find matching arg setup
5456 relocs, don't do any tls optimization. */
5457 if (pass == 0
5458 && sec->has_tls_get_addr_call
5459 && h != NULL
5460 && h == htab->tls_get_addr
5461 && !expecting_tls_get_addr
5462 && is_branch_reloc (r_type))
5463 {
25f53a85 5464 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
663a1470
AM
5465 "TLS optimization disabled\n",
5466 ibfd, sec, rel->r_offset);
5467 if (elf_section_data (sec)->relocs != relstart)
5468 free (relstart);
5469 return TRUE;
5470 }
5471
5472 expecting_tls_get_addr = 0;
b7fcf6f6
AM
5473 switch (r_type)
5474 {
5475 case R_PPC_GOT_TLSLD16:
5476 case R_PPC_GOT_TLSLD16_LO:
5477 expecting_tls_get_addr = 1;
1a0670f3 5478 /* Fall through. */
b7fcf6f6
AM
5479
5480 case R_PPC_GOT_TLSLD16_HI:
5481 case R_PPC_GOT_TLSLD16_HA:
5482 /* These relocs should never be against a symbol
5483 defined in a shared lib. Leave them alone if
5484 that turns out to be the case. */
5485 if (!is_local)
5486 continue;
5487
5488 /* LD -> LE */
5489 tls_set = 0;
5490 tls_clear = TLS_LD;
5491 break;
5492
5493 case R_PPC_GOT_TLSGD16:
5494 case R_PPC_GOT_TLSGD16_LO:
5495 expecting_tls_get_addr = 1;
1a0670f3 5496 /* Fall through. */
b7fcf6f6
AM
5497
5498 case R_PPC_GOT_TLSGD16_HI:
5499 case R_PPC_GOT_TLSGD16_HA:
5500 if (is_local)
5501 /* GD -> LE */
5502 tls_set = 0;
5503 else
5504 /* GD -> IE */
5505 tls_set = TLS_TLS | TLS_TPRELGD;
5506 tls_clear = TLS_GD;
5507 break;
5508
5509 case R_PPC_GOT_TPREL16:
5510 case R_PPC_GOT_TPREL16_LO:
5511 case R_PPC_GOT_TPREL16_HI:
5512 case R_PPC_GOT_TPREL16_HA:
5513 if (is_local)
5514 {
5515 /* IE -> LE */
5516 tls_set = 0;
5517 tls_clear = TLS_TPREL;
5518 break;
5519 }
5520 else
5521 continue;
5522
32af9f6e
AM
5523 case R_PPC_TLSGD:
5524 case R_PPC_TLSLD:
5525 expecting_tls_get_addr = 2;
5526 tls_set = 0;
5527 tls_clear = 0;
5528 break;
5529
b7fcf6f6 5530 default:
25dbc73a 5531 continue;
b7fcf6f6 5532 }
25dbc73a 5533
b7fcf6f6
AM
5534 if (pass == 0)
5535 {
727fc41e 5536 if (!expecting_tls_get_addr
32af9f6e
AM
5537 || (expecting_tls_get_addr == 1
5538 && !sec->has_tls_get_addr_call))
b7fcf6f6 5539 continue;
25dbc73a 5540
3a71aa26
AM
5541 if (rel + 1 < relend
5542 && branch_reloc_hash_match (ibfd, rel + 1,
5543 htab->tls_get_addr))
5544 continue;
25dbc73a 5545
b7fcf6f6
AM
5546 /* Uh oh, we didn't find the expected call. We
5547 could just mark this symbol to exclude it
5548 from tls optimization but it's safer to skip
663a1470 5549 the entire optimization. */
25f53a85 5550 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM
5551 "TLS optimization disabled\n"),
5552 ibfd, sec, rel->r_offset);
5553 if (elf_section_data (sec)->relocs != relstart)
5554 free (relstart);
5555 return TRUE;
b7fcf6f6 5556 }
25dbc73a 5557
32af9f6e
AM
5558 if (expecting_tls_get_addr)
5559 {
5560 struct plt_entry *ent;
5561 bfd_vma addend = 0;
5562
0e1862bb 5563 if (bfd_link_pic (info)
32af9f6e
AM
5564 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5565 addend = rel[1].r_addend;
5566 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5567 got2, addend);
5568 if (ent != NULL && ent->plt.refcount > 0)
5569 ent->plt.refcount -= 1;
5570
5571 if (expecting_tls_get_addr == 2)
5572 continue;
5573 }
5574
b7fcf6f6
AM
5575 if (h != NULL)
5576 {
5577 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5578 got_count = &h->got.refcount;
5579 }
5580 else
5581 {
b7fcf6f6 5582 bfd_signed_vma *lgot_refs;
e054468f 5583 struct plt_entry **local_plt;
b7fcf6f6 5584 char *lgot_masks;
25dbc73a 5585
b7fcf6f6
AM
5586 if (locsyms == NULL)
5587 {
5588 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5589 if (locsyms == NULL)
5590 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5591 symtab_hdr->sh_info,
5592 0, NULL, NULL, NULL);
5593 if (locsyms == NULL)
5594 {
5595 if (elf_section_data (sec)->relocs != relstart)
5596 free (relstart);
5597 return FALSE;
5598 }
5599 }
b7fcf6f6
AM
5600 lgot_refs = elf_local_got_refcounts (ibfd);
5601 if (lgot_refs == NULL)
5602 abort ();
e054468f
AM
5603 local_plt = (struct plt_entry **)
5604 (lgot_refs + symtab_hdr->sh_info);
5605 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
b7fcf6f6
AM
5606 tls_mask = &lgot_masks[r_symndx];
5607 got_count = &lgot_refs[r_symndx];
5608 }
25dbc73a 5609
b7fcf6f6
AM
5610 if (tls_set == 0)
5611 {
5612 /* We managed to get rid of a got entry. */
5613 if (*got_count > 0)
5614 *got_count -= 1;
5615 }
25dbc73a 5616
b7fcf6f6
AM
5617 *tls_mask |= tls_set;
5618 *tls_mask &= ~tls_clear;
5619 }
25dbc73a 5620
b7fcf6f6
AM
5621 if (elf_section_data (sec)->relocs != relstart)
5622 free (relstart);
5623 }
5624
5625 if (locsyms != NULL
5626 && (symtab_hdr->contents != (unsigned char *) locsyms))
5627 {
5628 if (!info->keep_memory)
5629 free (locsyms);
5630 else
5631 symtab_hdr->contents = (unsigned char *) locsyms;
5632 }
5633 }
25dbc73a
AM
5634 return TRUE;
5635}
5636\f
625af618
AM
5637/* Return true if we have dynamic relocs that apply to read-only sections. */
5638
5639static bfd_boolean
5640readonly_dynrelocs (struct elf_link_hash_entry *h)
5641{
6061a67d 5642 struct elf_dyn_relocs *p;
625af618
AM
5643
5644 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5645 {
5646 asection *s = p->sec->output_section;
5647
5648 if (s != NULL
5649 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5650 == (SEC_READONLY | SEC_ALLOC)))
5651 return TRUE;
5652 }
5653 return FALSE;
5654}
5655
25dbc73a
AM
5656/* Adjust a symbol defined by a dynamic object and referenced by a
5657 regular object. The current definition is in some section of the
5658 dynamic object, but we're not including those sections. We have to
5659 change the definition to something the rest of the link can
5660 understand. */
7fce784e 5661
25dbc73a
AM
5662static bfd_boolean
5663ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5664 struct elf_link_hash_entry *h)
5665{
5666 struct ppc_elf_link_hash_table *htab;
5667 asection *s;
7fce784e 5668
25dbc73a
AM
5669#ifdef DEBUG
5670 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5671 h->root.root.string);
5672#endif
252b5132 5673
25dbc73a
AM
5674 /* Make sure we know what is going on here. */
5675 htab = ppc_elf_hash_table (info);
5676 BFD_ASSERT (htab->elf.dynobj != NULL
5677 && (h->needs_plt
91e21fb7 5678 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5679 || h->u.weakdef != NULL
5680 || (h->def_dynamic
5681 && h->ref_regular
5682 && !h->def_regular)));
252b5132 5683
25dbc73a
AM
5684 /* Deal with function syms. */
5685 if (h->type == STT_FUNC
e054468f 5686 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5687 || h->needs_plt)
5688 {
5689 /* Clear procedure linkage table information for any symbol that
5690 won't need a .plt entry. */
a6aa5195
AM
5691 struct plt_entry *ent;
5692 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5693 if (ent->plt.refcount > 0)
5694 break;
5695 if (ent == NULL
e054468f
AM
5696 || (h->type != STT_GNU_IFUNC
5697 && (SYMBOL_CALLS_LOCAL (info, h)
21d68fcd 5698 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))))
252b5132 5699 {
25dbc73a 5700 /* A PLT entry is not required/allowed when:
252b5132 5701
25dbc73a
AM
5702 1. We are not using ld.so; because then the PLT entry
5703 can't be set up, so we can't use one. In this case,
5704 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 5705
25dbc73a
AM
5706 2. GC has rendered the entry unused.
5707
5708 3. We know for certain that a call to this symbol
5709 will go to this object, or will remain undefined. */
a6aa5195 5710 h->plt.plist = NULL;
25dbc73a 5711 h->needs_plt = 0;
d1eca1e4 5712 h->pointer_equality_needed = 0;
25dbc73a 5713 }
625af618
AM
5714 else
5715 {
d1eca1e4
AM
5716 /* Taking a function's address in a read/write section
5717 doesn't require us to define the function symbol in the
1009ef28 5718 executable on a plt call stub. A dynamic reloc can
f0158f44
AM
5719 be used instead, giving better runtime performance.
5720 (Calls via that function pointer don't need to bounce
5721 through the plt call stub.) Similarly, use a dynamic
5722 reloc for a weak reference when possible, allowing the
5723 resolution of the symbol to be set at load time rather
5724 than link time. */
5725 if ((h->pointer_equality_needed
5726 || (!h->ref_regular_nonweak && h->non_got_ref))
1009ef28
AM
5727 && !htab->is_vxworks
5728 && !ppc_elf_hash_entry (h)->has_sda_refs
d1eca1e4
AM
5729 && !readonly_dynrelocs (h))
5730 {
5731 h->pointer_equality_needed = 0;
f0158f44
AM
5732 /* After adjust_dynamic_symbol, non_got_ref set in the
5733 non-pic case means that dyn_relocs for this symbol
5734 should be discarded. */
d1eca1e4
AM
5735 h->non_got_ref = 0;
5736 }
625af618 5737 }
d3e454b9 5738 h->protected_def = 0;
25dbc73a 5739 return TRUE;
252b5132 5740 }
25dbc73a 5741 else
a6aa5195 5742 h->plt.plist = NULL;
252b5132 5743
25dbc73a
AM
5744 /* If this is a weak symbol, and there is a real definition, the
5745 processor independent code will have arranged for us to see the
5746 real definition first, and we can just use the same value. */
5747 if (h->u.weakdef != NULL)
252b5132 5748 {
25dbc73a
AM
5749 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5750 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5751 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5752 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5753 if (ELIMINATE_COPY_RELOCS)
5754 h->non_got_ref = h->u.weakdef->non_got_ref;
5755 return TRUE;
5756 }
dc810e39 5757
25dbc73a
AM
5758 /* This is a reference to a symbol defined by a dynamic object which
5759 is not a function. */
252b5132 5760
25dbc73a
AM
5761 /* If we are creating a shared library, we must presume that the
5762 only references to the symbol are via the global offset table.
5763 For such cases we need not do anything here; the relocations will
5764 be handled correctly by relocate_section. */
0e1862bb 5765 if (bfd_link_pic (info))
d3e454b9
AM
5766 {
5767 h->protected_def = 0;
5768 return TRUE;
5769 }
252b5132 5770
25dbc73a
AM
5771 /* If there are no references to this symbol that do not use the
5772 GOT, we don't need to generate a copy reloc. */
5773 if (!h->non_got_ref)
d3e454b9
AM
5774 {
5775 h->protected_def = 0;
5776 return TRUE;
5777 }
5778
5779 /* Protected variables do not work with .dynbss. The copy in
5780 .dynbss won't be used by the shared library with the protected
5781 definition for the variable. Editing to PIC, or text relocations
5782 are preferable to an incorrect program. */
5783 if (h->protected_def)
5784 {
5785 if (ELIMINATE_COPY_RELOCS
5786 && ppc_elf_hash_entry (h)->has_addr16_ha
5787 && ppc_elf_hash_entry (h)->has_addr16_lo
5788 && htab->params->pic_fixup == 0
5789 && info->disable_target_specific_optimizations <= 1)
5790 htab->params->pic_fixup = 1;
5791 h->non_got_ref = 0;
5792 return TRUE;
5793 }
25dbc73a 5794
a127494f
AM
5795 /* If -z nocopyreloc was given, we won't generate them either. */
5796 if (info->nocopyreloc)
5797 {
5798 h->non_got_ref = 0;
5799 return TRUE;
5800 }
5801
cfd2c773
NS
5802 /* If we didn't find any dynamic relocs in read-only sections, then
5803 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5804 We can't do this if there are any small data relocations. This
5805 doesn't work on VxWorks, where we can not have dynamic
5806 relocations (other than copy and jump slot relocations) in an
5807 executable. */
4dc4a9a5 5808 if (ELIMINATE_COPY_RELOCS
cfd2c773 5809 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
5810 && !htab->is_vxworks
5811 && !h->def_regular
5812 && !readonly_dynrelocs (h))
25dbc73a 5813 {
625af618
AM
5814 h->non_got_ref = 0;
5815 return TRUE;
252b5132
RH
5816 }
5817
25dbc73a
AM
5818 /* We must allocate the symbol in our .dynbss section, which will
5819 become part of the .bss section of the executable. There will be
5820 an entry for this symbol in the .dynsym section. The dynamic
5821 object will contain position independent code, so all references
5822 from the dynamic object to this symbol will go through the global
5823 offset table. The dynamic linker will use the .dynsym entry to
5824 determine the address it must put in the global offset table, so
5825 both the dynamic object and the regular object will refer to the
5826 same memory location for the variable.
5827
4dc4a9a5
DJ
5828 Of course, if the symbol is referenced using SDAREL relocs, we
5829 must instead allocate it in .sbss. */
25dbc73a 5830
4dc4a9a5 5831 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a 5832 s = htab->dynsbss;
5474d94f
AM
5833 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5834 s = htab->elf.sdynrelro;
25dbc73a 5835 else
9d19e4fd 5836 s = htab->elf.sdynbss;
25dbc73a
AM
5837 BFD_ASSERT (s != NULL);
5838
5839 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5840 copy the initial value out of the dynamic object and into the
5841 runtime process image. We need to remember the offset into the
5842 .rela.bss section we are going to use. */
1d7e9d18 5843 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
25dbc73a
AM
5844 {
5845 asection *srel;
5846
4dc4a9a5 5847 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a 5848 srel = htab->relsbss;
5474d94f
AM
5849 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5850 srel = htab->elf.sreldynrelro;
25dbc73a 5851 else
9d19e4fd 5852 srel = htab->elf.srelbss;
25dbc73a
AM
5853 BFD_ASSERT (srel != NULL);
5854 srel->size += sizeof (Elf32_External_Rela);
5855 h->needs_copy = 1;
5856 }
7619e7c7 5857
6cabe1ea 5858 return _bfd_elf_adjust_dynamic_copy (info, h, s);
25dbc73a
AM
5859}
5860\f
ac39eb42
AM
5861/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5862 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5863 specifying the addend on the plt relocation. For -fpic code, the sym
5864 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5865 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
5866
5867static bfd_boolean
5868add_stub_sym (struct plt_entry *ent,
5869 struct elf_link_hash_entry *h,
ac39eb42 5870 struct bfd_link_info *info)
0ba07910
AM
5871{
5872 struct elf_link_hash_entry *sh;
5873 size_t len1, len2, len3;
5874 char *name;
ac39eb42
AM
5875 const char *stub;
5876 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5877
0e1862bb 5878 if (bfd_link_pic (info))
ac39eb42
AM
5879 stub = ".plt_pic32.";
5880 else
5881 stub = ".plt_call32.";
0ba07910
AM
5882
5883 len1 = strlen (h->root.root.string);
ac39eb42 5884 len2 = strlen (stub);
0ba07910
AM
5885 len3 = 0;
5886 if (ent->sec)
5887 len3 = strlen (ent->sec->name);
ac39eb42 5888 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
5889 if (name == NULL)
5890 return FALSE;
5891 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5892 if (ent->sec)
5893 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
5894 memcpy (name + 8 + len3, stub, len2);
5895 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
5896 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5897 if (sh == NULL)
5898 return FALSE;
5899 if (sh->root.type == bfd_link_hash_new)
5900 {
5901 sh->root.type = bfd_link_hash_defined;
5902 sh->root.u.def.section = htab->glink;
5903 sh->root.u.def.value = ent->glink_offset;
5904 sh->ref_regular = 1;
5905 sh->def_regular = 1;
5906 sh->ref_regular_nonweak = 1;
5907 sh->forced_local = 1;
5908 sh->non_elf = 0;
2ec55de3 5909 sh->root.linker_def = 1;
0ba07910
AM
5910 }
5911 return TRUE;
5912}
5913
3b36f7e6
AM
5914/* Allocate NEED contiguous space in .got, and return the offset.
5915 Handles allocation of the got header when crossing 32k. */
5916
5917static bfd_vma
5918allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5919{
5920 bfd_vma where;
4a3dc543 5921 unsigned int max_before_header;
3b36f7e6 5922
4a3dc543 5923 if (htab->plt_type == PLT_VXWORKS)
9d8504b1 5924 {
ce558b89
AM
5925 where = htab->elf.sgot->size;
5926 htab->elf.sgot->size += need;
9d8504b1 5927 }
3b36f7e6
AM
5928 else
5929 {
4a3dc543
RS
5930 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5931 if (need <= htab->got_gap)
3b36f7e6 5932 {
4a3dc543
RS
5933 where = max_before_header - htab->got_gap;
5934 htab->got_gap -= need;
5935 }
5936 else
5937 {
ce558b89
AM
5938 if (htab->elf.sgot->size + need > max_before_header
5939 && htab->elf.sgot->size <= max_before_header)
4a3dc543 5940 {
ce558b89
AM
5941 htab->got_gap = max_before_header - htab->elf.sgot->size;
5942 htab->elf.sgot->size = max_before_header + htab->got_header_size;
4a3dc543 5943 }
ce558b89
AM
5944 where = htab->elf.sgot->size;
5945 htab->elf.sgot->size += need;
3b36f7e6 5946 }
3b36f7e6
AM
5947 }
5948 return where;
5949}
5950
46434633 5951/* If H is undefined, make it dynamic if that makes sense. */
f0158f44
AM
5952
5953static bfd_boolean
46434633
AM
5954ensure_undef_dynamic (struct bfd_link_info *info,
5955 struct elf_link_hash_entry *h)
f0158f44
AM
5956{
5957 struct elf_link_hash_table *htab = elf_hash_table (info);
5958
5959 if (htab->dynamic_sections_created
46434633
AM
5960 && ((info->dynamic_undefined_weak != 0
5961 && h->root.type == bfd_link_hash_undefweak)
5962 || h->root.type == bfd_link_hash_undefined)
f0158f44
AM
5963 && h->dynindx == -1
5964 && !h->forced_local
5965 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5966 return bfd_elf_link_record_dynamic_symbol (info, h);
5967 return TRUE;
5968}
5969
25dbc73a 5970/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 5971
b34976b6 5972static bfd_boolean
25dbc73a 5973allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 5974{
25dbc73a
AM
5975 struct bfd_link_info *info = inf;
5976 struct ppc_elf_link_hash_entry *eh;
7619e7c7 5977 struct ppc_elf_link_hash_table *htab;
6061a67d 5978 struct elf_dyn_relocs *p;
f0158f44 5979 bfd_boolean dyn;
252b5132 5980
25dbc73a 5981 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5982 return TRUE;
252b5132 5983
7619e7c7 5984 htab = ppc_elf_hash_table (info);
25dbc73a 5985 eh = (struct ppc_elf_link_hash_entry *) h;
d3e454b9
AM
5986 if (eh->elf.got.refcount > 0
5987 || (ELIMINATE_COPY_RELOCS
5988 && !eh->elf.def_regular
5989 && eh->elf.protected_def
5990 && eh->has_addr16_ha
5991 && eh->has_addr16_lo
5992 && htab->params->pic_fixup > 0))
25dbc73a 5993 {
d6e14abc
AM
5994 unsigned int need;
5995
46434633
AM
5996 /* Make sure this symbol is output as a dynamic symbol. */
5997 if (!ensure_undef_dynamic (info, &eh->elf))
f0158f44 5998 return FALSE;
252b5132 5999
d6e14abc
AM
6000 need = 0;
6001 if ((eh->tls_mask & TLS_TLS) != 0)
25dbc73a 6002 {
d6e14abc 6003 if ((eh->tls_mask & TLS_LD) != 0)
252b5132 6004 {
d6e14abc
AM
6005 if (!eh->elf.def_dynamic)
6006 /* We'll just use htab->tlsld_got.offset. This should
6007 always be the case. It's a little odd if we have
6008 a local dynamic reloc against a non-local symbol. */
6009 htab->tlsld_got.refcount += 1;
6010 else
3b36f7e6 6011 need += 8;
252b5132 6012 }
d6e14abc
AM
6013 if ((eh->tls_mask & TLS_GD) != 0)
6014 need += 8;
6015 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6016 need += 4;
6017 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 6018 need += 4;
d6e14abc
AM
6019 }
6020 else
6021 need += 4;
6022 if (need == 0)
6023 eh->elf.got.offset = (bfd_vma) -1;
6024 else
6025 {
3b36f7e6 6026 eh->elf.got.offset = allocate_got (htab, need);
0e1862bb 6027 if ((bfd_link_pic (info)
f0158f44
AM
6028 || (htab->elf.dynamic_sections_created
6029 && eh->elf.dynindx != -1
6030 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
21d68fcd 6031 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
252b5132 6032 {
ce558b89 6033 asection *rsec = htab->elf.srelgot;
0bed072f
AM
6034
6035 if (eh->elf.type == STT_GNU_IFUNC)
ce558b89 6036 rsec = htab->elf.irelplt;
3b36f7e6
AM
6037 /* All the entries we allocated need relocs.
6038 Except LD only needs one. */
d6e14abc
AM
6039 if ((eh->tls_mask & TLS_LD) != 0
6040 && eh->elf.def_dynamic)
3b36f7e6 6041 need -= 4;
25f23106 6042 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 6043 }
25dbc73a
AM
6044 }
6045 }
6046 else
6047 eh->elf.got.offset = (bfd_vma) -1;
252b5132 6048
954b63d4
AM
6049 /* If no dynamic sections we can't have dynamic relocs, except for
6050 IFUNCs which are handled even in static executables. */
f0158f44
AM
6051 if (!htab->elf.dynamic_sections_created
6052 && h->type != STT_GNU_IFUNC)
6053 eh->dyn_relocs = NULL;
6054
6055 if (eh->dyn_relocs == NULL)
6056 ;
252b5132 6057
25dbc73a
AM
6058 /* In the shared -Bsymbolic case, discard space allocated for
6059 dynamic pc-relative relocs against symbols which turn out to be
6060 defined in regular objects. For the normal shared case, discard
6061 space for relocs that have become local due to symbol visibility
6062 changes. */
f0158f44 6063 else if (bfd_link_pic (info))
25dbc73a 6064 {
954b63d4
AM
6065 /* Discard relocs on undefined symbols that must be local. */
6066 if (h->root.type == bfd_link_hash_undefined
6067 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6068 eh->dyn_relocs = NULL;
6069
6070 /* Also discard relocs on undefined weak syms with non-default
6071 visibility, or when dynamic_undefined_weak says so. */
21d68fcd 6072 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
954b63d4
AM
6073 eh->dyn_relocs = NULL;
6074
25dbc73a 6075 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 6076 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
6077 generated via assembly. We want calls to protected symbols to
6078 resolve directly to the function rather than going via the plt.
6079 If people want function pointer comparisons to work as expected
6080 then they should avoid writing weird assembly. */
954b63d4 6081 else if (SYMBOL_CALLS_LOCAL (info, h))
25dbc73a 6082 {
6061a67d 6083 struct elf_dyn_relocs **pp;
25dbc73a
AM
6084
6085 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 6086 {
25dbc73a
AM
6087 p->count -= p->pc_count;
6088 p->pc_count = 0;
6089 if (p->count == 0)
6090 *pp = p->next;
6091 else
6092 pp = &p->next;
252b5132 6093 }
25dbc73a 6094 }
252b5132 6095
3348747a
NS
6096 if (htab->is_vxworks)
6097 {
6061a67d 6098 struct elf_dyn_relocs **pp;
3348747a
NS
6099
6100 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6101 {
6102 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6103 *pp = p->next;
6104 else
6105 pp = &p->next;
6106 }
6107 }
6108
954b63d4 6109 if (eh->dyn_relocs != NULL)
25dbc73a 6110 {
46434633
AM
6111 /* Make sure this symbol is output as a dynamic symbol. */
6112 if (!ensure_undef_dynamic (info, h))
f0158f44 6113 return FALSE;
25dbc73a
AM
6114 }
6115 }
6116 else if (ELIMINATE_COPY_RELOCS)
6117 {
f0158f44 6118 /* For the non-pic case, discard space for relocs against
25dbc73a
AM
6119 symbols which turn out to need copy relocs or are not
6120 dynamic. */
25dbc73a 6121 if (!h->non_got_ref
d3e454b9
AM
6122 && !h->def_regular
6123 && !(h->protected_def
6124 && eh->has_addr16_ha
6125 && eh->has_addr16_lo
6126 && htab->params->pic_fixup > 0))
25dbc73a 6127 {
46434633
AM
6128 /* Make sure this symbol is output as a dynamic symbol. */
6129 if (!ensure_undef_dynamic (info, h))
f0158f44 6130 return FALSE;
7619e7c7 6131
f0158f44
AM
6132 if (h->dynindx == -1)
6133 eh->dyn_relocs = NULL;
25dbc73a 6134 }
f0158f44
AM
6135 else
6136 eh->dyn_relocs = NULL;
25dbc73a 6137 }
252b5132 6138
f0158f44 6139 /* Allocate space. */
25dbc73a
AM
6140 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6141 {
6142 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6143 if (eh->elf.type == STT_GNU_IFUNC)
ce558b89 6144 sreloc = htab->elf.irelplt;
25dbc73a
AM
6145 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6146 }
252b5132 6147
f0158f44
AM
6148 /* Handle PLT relocs. Done last, after dynindx has settled. */
6149 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6150 if (dyn || h->type == STT_GNU_IFUNC)
6151 {
6152 struct plt_entry *ent;
6153 bfd_boolean doneone = FALSE;
6154 bfd_vma plt_offset = 0, glink_offset = 0;
6155
6156 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6157 if (ent->plt.refcount > 0)
6158 {
6159 asection *s = htab->elf.splt;
6160
6161 if (!dyn)
6162 s = htab->elf.iplt;
6163
6164 if (htab->plt_type == PLT_NEW || !dyn)
6165 {
6166 if (!doneone)
6167 {
6168 plt_offset = s->size;
6169 s->size += 4;
6170 }
6171 ent->plt.offset = plt_offset;
6172
6173 s = htab->glink;
6174 if (!doneone || bfd_link_pic (info))
6175 {
6176 glink_offset = s->size;
6177 s->size += GLINK_ENTRY_SIZE;
6178 if (h == htab->tls_get_addr
6179 && !htab->params->no_tls_get_addr_opt)
6180 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
6181 }
6182 if (!doneone
6183 && !bfd_link_pic (info)
6184 && h->def_dynamic
6185 && !h->def_regular)
6186 {
6187 h->root.u.def.section = s;
6188 h->root.u.def.value = glink_offset;
6189 }
6190 ent->glink_offset = glink_offset;
6191
6192 if (htab->params->emit_stub_syms
6193 && !add_stub_sym (ent, h, info))
6194 return FALSE;
6195 }
6196 else
6197 {
6198 if (!doneone)
6199 {
6200 /* If this is the first .plt entry, make room
6201 for the special first entry. */
6202 if (s->size == 0)
6203 s->size += htab->plt_initial_entry_size;
6204
6205 /* The PowerPC PLT is actually composed of two
6206 parts, the first part is 2 words (for a load
6207 and a jump), and then there is a remaining
6208 word available at the end. */
6209 plt_offset = (htab->plt_initial_entry_size
6210 + (htab->plt_slot_size
6211 * ((s->size
6212 - htab->plt_initial_entry_size)
6213 / htab->plt_entry_size)));
6214
6215 /* If this symbol is not defined in a regular
6216 file, and we are not generating a shared
6217 library, then set the symbol to this location
6218 in the .plt. This is to avoid text
6219 relocations, and is required to make
6220 function pointers compare as equal between
6221 the normal executable and the shared library. */
6222 if (! bfd_link_pic (info)
6223 && h->def_dynamic
6224 && !h->def_regular)
6225 {
6226 h->root.u.def.section = s;
6227 h->root.u.def.value = plt_offset;
6228 }
6229
6230 /* Make room for this entry. */
6231 s->size += htab->plt_entry_size;
6232 /* After the 8192nd entry, room for two entries
6233 is allocated. */
6234 if (htab->plt_type == PLT_OLD
6235 && (s->size - htab->plt_initial_entry_size)
6236 / htab->plt_entry_size
6237 > PLT_NUM_SINGLE_ENTRIES)
6238 s->size += htab->plt_entry_size;
6239 }
6240 ent->plt.offset = plt_offset;
6241 }
6242
6243 /* We also need to make an entry in the .rela.plt section. */
6244 if (!doneone)
6245 {
6246 if (!dyn)
6247 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6248 else
6249 {
6250 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6251
6252 if (htab->plt_type == PLT_VXWORKS)
6253 {
6254 /* Allocate space for the unloaded relocations. */
6255 if (!bfd_link_pic (info)
6256 && htab->elf.dynamic_sections_created)
6257 {
6258 if (ent->plt.offset
6259 == (bfd_vma) htab->plt_initial_entry_size)
6260 {
6261 htab->srelplt2->size
6262 += (sizeof (Elf32_External_Rela)
6263 * VXWORKS_PLTRESOLVE_RELOCS);
6264 }
6265
6266 htab->srelplt2->size
6267 += (sizeof (Elf32_External_Rela)
6268 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6269 }
6270
6271 /* Every PLT entry has an associated GOT entry in
6272 .got.plt. */
6273 htab->elf.sgotplt->size += 4;
6274 }
6275 }
6276 doneone = TRUE;
6277 }
6278 }
6279 else
6280 ent->plt.offset = (bfd_vma) -1;
6281
6282 if (!doneone)
6283 {
6284 h->plt.plist = NULL;
6285 h->needs_plt = 0;
6286 }
6287 }
6288 else
6289 {
6290 h->plt.plist = NULL;
6291 h->needs_plt = 0;
6292 }
6293
25dbc73a
AM
6294 return TRUE;
6295}
7619e7c7 6296
625af618
AM
6297/* Set DF_TEXTREL if we find any dynamic relocs that apply to
6298 read-only sections. */
7619e7c7 6299
25dbc73a 6300static bfd_boolean
625af618 6301maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 6302{
25dbc73a
AM
6303 if (h->root.type == bfd_link_hash_indirect)
6304 return TRUE;
252b5132 6305
625af618 6306 if (readonly_dynrelocs (h))
25dbc73a 6307 {
625af618 6308 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 6309
625af618
AM
6310 /* Not an error, just cut short the traversal. */
6311 return FALSE;
25dbc73a
AM
6312 }
6313 return TRUE;
6314}
6315
6177242a
AM
6316static const unsigned char glink_eh_frame_cie[] =
6317{
6318 0, 0, 0, 16, /* length. */
6319 0, 0, 0, 0, /* id. */
6320 1, /* CIE version. */
6321 'z', 'R', 0, /* Augmentation string. */
6322 4, /* Code alignment. */
6323 0x7c, /* Data alignment. */
6324 65, /* RA reg. */
6325 1, /* Augmentation size. */
6326 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6327 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6328};
6329
25dbc73a
AM
6330/* Set the sizes of the dynamic sections. */
6331
6332static bfd_boolean
93d1b056 6333ppc_elf_size_dynamic_sections (bfd *output_bfd,
25dbc73a
AM
6334 struct bfd_link_info *info)
6335{
6336 struct ppc_elf_link_hash_table *htab;
6337 asection *s;
6338 bfd_boolean relocs;
6339 bfd *ibfd;
7fce784e 6340
252b5132 6341#ifdef DEBUG
25dbc73a 6342 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 6343#endif
252b5132 6344
25dbc73a
AM
6345 htab = ppc_elf_hash_table (info);
6346 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 6347
25dbc73a
AM
6348 if (elf_hash_table (info)->dynamic_sections_created)
6349 {
6350 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 6351 if (bfd_link_executable (info) && !info->nointerp)
25dbc73a 6352 {
3d4d4302 6353 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
25dbc73a
AM
6354 BFD_ASSERT (s != NULL);
6355 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6356 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6357 }
6358 }
252b5132 6359
4a3dc543 6360 if (htab->plt_type == PLT_OLD)
d7128ce4 6361 htab->got_header_size = 16;
4a3dc543 6362 else if (htab->plt_type == PLT_NEW)
d7128ce4 6363 htab->got_header_size = 12;
252b5132 6364
25dbc73a
AM
6365 /* Set up .got offsets for local syms, and space for local dynamic
6366 relocs. */
c72f2fb2 6367 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
25dbc73a
AM
6368 {
6369 bfd_signed_vma *local_got;
6370 bfd_signed_vma *end_local_got;
e054468f
AM
6371 struct plt_entry **local_plt;
6372 struct plt_entry **end_local_plt;
25dbc73a
AM
6373 char *lgot_masks;
6374 bfd_size_type locsymcount;
6375 Elf_Internal_Shdr *symtab_hdr;
7fce784e 6376
0c8d6e5c 6377 if (!is_ppc_elf (ibfd))
25dbc73a 6378 continue;
7fce784e 6379
25dbc73a
AM
6380 for (s = ibfd->sections; s != NULL; s = s->next)
6381 {
f95f8542 6382 struct ppc_dyn_relocs *p;
252b5132 6383
f95f8542 6384 for (p = ((struct ppc_dyn_relocs *)
25dbc73a
AM
6385 elf_section_data (s)->local_dynrel);
6386 p != NULL;
6387 p = p->next)
6388 {
6389 if (!bfd_is_abs_section (p->sec)
6390 && bfd_is_abs_section (p->sec->output_section))
6391 {
6392 /* Input section has been discarded, either because
6393 it is a copy of a linkonce section or due to
6394 linker script /DISCARD/, so we'll be discarding
6395 the relocs too. */
7fce784e 6396 }
3348747a
NS
6397 else if (htab->is_vxworks
6398 && strcmp (p->sec->output_section->name,
6399 ".tls_vars") == 0)
6400 {
6401 /* Relocations in vxworks .tls_vars sections are
6402 handled specially by the loader. */
6403 }
25dbc73a 6404 else if (p->count != 0)
7fce784e 6405 {
25f23106 6406 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6407 if (p->ifunc)
ce558b89 6408 sreloc = htab->elf.irelplt;
25f23106 6409 sreloc->size += p->count * sizeof (Elf32_External_Rela);
25dbc73a
AM
6410 if ((p->sec->output_section->flags
6411 & (SEC_READONLY | SEC_ALLOC))
6412 == (SEC_READONLY | SEC_ALLOC))
6413 info->flags |= DF_TEXTREL;
7fce784e 6414 }
252b5132 6415 }
252b5132 6416 }
252b5132 6417
25dbc73a
AM
6418 local_got = elf_local_got_refcounts (ibfd);
6419 if (!local_got)
6420 continue;
252b5132 6421
0ffa91dd 6422 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
6423 locsymcount = symtab_hdr->sh_info;
6424 end_local_got = local_got + locsymcount;
e054468f
AM
6425 local_plt = (struct plt_entry **) end_local_got;
6426 end_local_plt = local_plt + locsymcount;
6427 lgot_masks = (char *) end_local_plt;
91d6fa6a 6428
25dbc73a
AM
6429 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6430 if (*local_got > 0)
6431 {
d6e14abc
AM
6432 unsigned int need = 0;
6433 if ((*lgot_masks & TLS_TLS) != 0)
25dbc73a 6434 {
d6e14abc
AM
6435 if ((*lgot_masks & TLS_GD) != 0)
6436 need += 8;
6437 if ((*lgot_masks & TLS_LD) != 0)
6438 htab->tlsld_got.refcount += 1;
6439 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6440 need += 4;
6441 if ((*lgot_masks & TLS_DTPREL) != 0)
6442 need += 4;
25dbc73a 6443 }
d6e14abc
AM
6444 else
6445 need += 4;
6446 if (need == 0)
6447 *local_got = (bfd_vma) -1;
25dbc73a
AM
6448 else
6449 {
3b36f7e6 6450 *local_got = allocate_got (htab, need);
0e1862bb 6451 if (bfd_link_pic (info))
0bed072f 6452 {
ce558b89 6453 asection *srel = htab->elf.srelgot;
0bed072f 6454 if ((*lgot_masks & PLT_IFUNC) != 0)
ce558b89 6455 srel = htab->elf.irelplt;
0bed072f
AM
6456 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6457 }
25dbc73a
AM
6458 }
6459 }
6460 else
6461 *local_got = (bfd_vma) -1;
e054468f
AM
6462
6463 if (htab->is_vxworks)
6464 continue;
6465
6466 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6467 for (; local_plt < end_local_plt; ++local_plt)
6468 {
6469 struct plt_entry *ent;
6470 bfd_boolean doneone = FALSE;
6471 bfd_vma plt_offset = 0, glink_offset = 0;
6472
6473 for (ent = *local_plt; ent != NULL; ent = ent->next)
6474 if (ent->plt.refcount > 0)
6475 {
ce558b89 6476 s = htab->elf.iplt;
e054468f
AM
6477
6478 if (!doneone)
6479 {
6480 plt_offset = s->size;
6481 s->size += 4;
6482 }
6483 ent->plt.offset = plt_offset;
6484
6485 s = htab->glink;
0e1862bb 6486 if (!doneone || bfd_link_pic (info))
e054468f
AM
6487 {
6488 glink_offset = s->size;
6489 s->size += GLINK_ENTRY_SIZE;
6490 }
6491 ent->glink_offset = glink_offset;
6492
6493 if (!doneone)
6494 {
ce558b89 6495 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
e054468f
AM
6496 doneone = TRUE;
6497 }
6498 }
6499 else
6500 ent->plt.offset = (bfd_vma) -1;
6501 }
25dbc73a 6502 }
252b5132 6503
b7fcf6f6
AM
6504 /* Allocate space for global sym dynamic relocs. */
6505 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6506
3b36f7e6
AM
6507 if (htab->tlsld_got.refcount > 0)
6508 {
6509 htab->tlsld_got.offset = allocate_got (htab, 8);
0e1862bb 6510 if (bfd_link_pic (info))
ce558b89 6511 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
3b36f7e6
AM
6512 }
6513 else
6514 htab->tlsld_got.offset = (bfd_vma) -1;
6515
ce558b89 6516 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
6517 {
6518 unsigned int g_o_t = 32768;
6519
4d962050
AM
6520 /* If we haven't allocated the header, do so now. When we get here,
6521 for old plt/got the got size will be 0 to 32764 (not allocated),
6522 or 32780 to 65536 (header allocated). For new plt/got, the
6523 corresponding ranges are 0 to 32768 and 32780 to 65536. */
ce558b89 6524 if (htab->elf.sgot->size <= 32768)
3b36f7e6 6525 {
ce558b89 6526 g_o_t = htab->elf.sgot->size;
4a3dc543 6527 if (htab->plt_type == PLT_OLD)
4d962050 6528 g_o_t += 4;
ce558b89 6529 htab->elf.sgot->size += htab->got_header_size;
3b36f7e6 6530 }
3b36f7e6
AM
6531
6532 htab->elf.hgot->root.u.def.value = g_o_t;
6533 }
0e1862bb 6534 if (bfd_link_pic (info))
bd6c6e2b
AM
6535 {
6536 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
93d1b056
AM
6537
6538 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6539 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
bd6c6e2b 6540 }
15bfcc77
AM
6541 if (info->emitrelocations)
6542 {
6543 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6544
6545 if (sda != NULL && sda->ref_regular)
6546 sda->root.u.def.section->flags |= SEC_KEEP;
6547 sda = htab->sdata[1].sym;
6548 if (sda != NULL && sda->ref_regular)
6549 sda->root.u.def.section->flags |= SEC_KEEP;
6550 }
3b36f7e6 6551
e054468f
AM
6552 if (htab->glink != NULL
6553 && htab->glink->size != 0
6554 && htab->elf.dynamic_sections_created)
d7128ce4
AM
6555 {
6556 htab->glink_pltresolve = htab->glink->size;
888a7fc3
AM
6557 /* Space for the branch table. ??? We don't need entries for
6558 non-dynamic symbols in this table. This case can arise with
6559 static ifuncs or forced local ifuncs. */
86b9da88
AM
6560 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6561 /* Pad out to align the start of PLTresolve. */
5446cbdf
AM
6562 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6563 ? 63 : 15);
d7128ce4 6564 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910 6565
5446cbdf 6566 if (htab->params->emit_stub_syms)
0ba07910
AM
6567 {
6568 struct elf_link_hash_entry *sh;
6569 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6570 TRUE, FALSE, FALSE);
6571 if (sh == NULL)
6572 return FALSE;
6573 if (sh->root.type == bfd_link_hash_new)
6574 {
6575 sh->root.type = bfd_link_hash_defined;
6576 sh->root.u.def.section = htab->glink;
6577 sh->root.u.def.value = htab->glink_pltresolve;
6578 sh->ref_regular = 1;
6579 sh->def_regular = 1;
6580 sh->ref_regular_nonweak = 1;
6581 sh->forced_local = 1;
6582 sh->non_elf = 0;
2ec55de3 6583 sh->root.linker_def = 1;
0ba07910
AM
6584 }
6585 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6586 TRUE, FALSE, FALSE);
6587 if (sh == NULL)
6588 return FALSE;
6589 if (sh->root.type == bfd_link_hash_new)
6590 {
6591 sh->root.type = bfd_link_hash_defined;
6592 sh->root.u.def.section = htab->glink;
6593 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6594 sh->ref_regular = 1;
6595 sh->def_regular = 1;
6596 sh->ref_regular_nonweak = 1;
6597 sh->forced_local = 1;
6598 sh->non_elf = 0;
2ec55de3 6599 sh->root.linker_def = 1;
0ba07910
AM
6600 }
6601 }
d7128ce4
AM
6602 }
6603
6177242a
AM
6604 if (htab->glink != NULL
6605 && htab->glink->size != 0
6606 && htab->glink_eh_frame != NULL
9a2a56cc
AM
6607 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6608 && _bfd_elf_eh_frame_present (info))
6177242a
AM
6609 {
6610 s = htab->glink_eh_frame;
6611 s->size = sizeof (glink_eh_frame_cie) + 20;
0e1862bb 6612 if (bfd_link_pic (info))
6177242a
AM
6613 {
6614 s->size += 4;
6615 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6616 s->size += 4;
6617 }
6618 }
6619
25dbc73a
AM
6620 /* We've now determined the sizes of the various dynamic sections.
6621 Allocate memory for them. */
6622 relocs = FALSE;
6623 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 6624 {
9d8504b1
PB
6625 bfd_boolean strip_section = TRUE;
6626
25dbc73a
AM
6627 if ((s->flags & SEC_LINKER_CREATED) == 0)
6628 continue;
252b5132 6629
ce558b89
AM
6630 if (s == htab->elf.splt
6631 || s == htab->elf.sgot)
25dbc73a 6632 {
9d8504b1
PB
6633 /* We'd like to strip these sections if they aren't needed, but if
6634 we've exported dynamic symbols from them we must leave them.
6635 It's too late to tell BFD to get rid of the symbols. */
e054468f 6636 if (htab->elf.hplt != NULL)
9d8504b1 6637 strip_section = FALSE;
25dbc73a
AM
6638 /* Strip this section if we don't need it; see the
6639 comment below. */
6640 }
ce558b89 6641 else if (s == htab->elf.iplt
e054468f 6642 || s == htab->glink
6177242a 6643 || s == htab->glink_eh_frame
ce558b89 6644 || s == htab->elf.sgotplt
e054468f 6645 || s == htab->sbss
9d19e4fd 6646 || s == htab->elf.sdynbss
5474d94f 6647 || s == htab->elf.sdynrelro
15bfcc77 6648 || s == htab->dynsbss)
25dbc73a 6649 {
c9a2f333 6650 /* Strip these too. */
25dbc73a 6651 }
15bfcc77
AM
6652 else if (s == htab->sdata[0].section
6653 || s == htab->sdata[1].section)
6654 {
6655 strip_section = (s->flags & SEC_KEEP) == 0;
6656 }
a0f49396
NC
6657 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6658 ".rela"))
25dbc73a 6659 {
c456f082 6660 if (s->size != 0)
25dbc73a
AM
6661 {
6662 /* Remember whether there are any relocation sections. */
6663 relocs = TRUE;
252b5132 6664
25dbc73a
AM
6665 /* We use the reloc_count field as a counter if we need
6666 to copy relocs into the output file. */
6667 s->reloc_count = 0;
252b5132
RH
6668 }
6669 }
25dbc73a
AM
6670 else
6671 {
6672 /* It's not one of our sections, so don't allocate space. */
6673 continue;
6674 }
252b5132 6675
9d8504b1 6676 if (s->size == 0 && strip_section)
25dbc73a 6677 {
c456f082
AM
6678 /* If we don't need this section, strip it from the
6679 output file. This is mostly to handle .rela.bss and
6680 .rela.plt. We must create both sections in
6681 create_dynamic_sections, because they must be created
6682 before the linker maps input sections to output
6683 sections. The linker does that before
6684 adjust_dynamic_symbol is called, and it is that
6685 function which decides whether anything needs to go
6686 into these sections. */
8423293d 6687 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
6688 continue;
6689 }
7fce784e 6690
d7128ce4 6691 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
6692 continue;
6693
25dbc73a
AM
6694 /* Allocate memory for the section contents. */
6695 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6696 if (s->contents == NULL)
6697 return FALSE;
6698 }
252b5132 6699
25dbc73a 6700 if (htab->elf.dynamic_sections_created)
7619e7c7 6701 {
25dbc73a
AM
6702 /* Add some entries to the .dynamic section. We fill in the
6703 values later, in ppc_elf_finish_dynamic_sections, but we
6704 must add the entries now so that we get the correct size for
6705 the .dynamic section. The DT_DEBUG entry is filled in by the
6706 dynamic linker and used by the debugger. */
6707#define add_dynamic_entry(TAG, VAL) \
6708 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 6709
0e1862bb 6710 if (bfd_link_executable (info))
7619e7c7 6711 {
25dbc73a
AM
6712 if (!add_dynamic_entry (DT_DEBUG, 0))
6713 return FALSE;
7619e7c7
AM
6714 }
6715
ce558b89 6716 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
7619e7c7 6717 {
25dbc73a
AM
6718 if (!add_dynamic_entry (DT_PLTGOT, 0)
6719 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6720 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6721 || !add_dynamic_entry (DT_JMPREL, 0))
6722 return FALSE;
6723 }
7619e7c7 6724
c7e17e05
AM
6725 if (htab->plt_type == PLT_NEW
6726 && htab->glink != NULL
6727 && htab->glink->size != 0)
d7128ce4 6728 {
1fe44d79 6729 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4 6730 return FALSE;
5446cbdf 6731 if (!htab->params->no_tls_get_addr_opt
a7f2871e
AM
6732 && htab->tls_get_addr != NULL
6733 && htab->tls_get_addr->plt.plist != NULL
e8910a83 6734 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
a7f2871e 6735 return FALSE;
d7128ce4
AM
6736 }
6737
25dbc73a
AM
6738 if (relocs)
6739 {
6740 if (!add_dynamic_entry (DT_RELA, 0)
6741 || !add_dynamic_entry (DT_RELASZ, 0)
6742 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6743 return FALSE;
6744 }
7619e7c7 6745
25dbc73a
AM
6746 /* If any dynamic relocs apply to a read-only section, then we
6747 need a DT_TEXTREL entry. */
6748 if ((info->flags & DF_TEXTREL) == 0)
625af618 6749 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 6750 info);
7619e7c7 6751
25dbc73a
AM
6752 if ((info->flags & DF_TEXTREL) != 0)
6753 {
6754 if (!add_dynamic_entry (DT_TEXTREL, 0))
6755 return FALSE;
7619e7c7 6756 }
7a2b07ff
NS
6757 if (htab->is_vxworks
6758 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6759 return FALSE;
6760 }
25dbc73a
AM
6761#undef add_dynamic_entry
6762
7e01508c
AM
6763 if (htab->glink_eh_frame != NULL
6764 && htab->glink_eh_frame->contents != NULL)
6765 {
6766 unsigned char *p = htab->glink_eh_frame->contents;
6767 bfd_vma val;
6768
6769 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6770 /* CIE length (rewrite in case little-endian). */
6771 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6772 p += sizeof (glink_eh_frame_cie);
6773 /* FDE length. */
6774 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6775 bfd_put_32 (htab->elf.dynobj, val, p);
6776 p += 4;
6777 /* CIE pointer. */
6778 val = p - htab->glink_eh_frame->contents;
6779 bfd_put_32 (htab->elf.dynobj, val, p);
6780 p += 4;
6781 /* Offset to .glink. Set later. */
6782 p += 4;
6783 /* .glink size. */
6784 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6785 p += 4;
6786 /* Augmentation. */
6787 p += 1;
6788
0e1862bb 6789 if (bfd_link_pic (info)
7e01508c
AM
6790 && htab->elf.dynamic_sections_created)
6791 {
6792 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6793 if (adv < 64)
6794 *p++ = DW_CFA_advance_loc + adv;
6795 else if (adv < 256)
6796 {
6797 *p++ = DW_CFA_advance_loc1;
6798 *p++ = adv;
6799 }
6800 else if (adv < 65536)
6801 {
6802 *p++ = DW_CFA_advance_loc2;
6803 bfd_put_16 (htab->elf.dynobj, adv, p);
6804 p += 2;
6805 }
6806 else
6807 {
6808 *p++ = DW_CFA_advance_loc4;
6809 bfd_put_32 (htab->elf.dynobj, adv, p);
6810 p += 4;
6811 }
6812 *p++ = DW_CFA_register;
6813 *p++ = 65;
6814 p++;
6815 *p++ = DW_CFA_advance_loc + 4;
6816 *p++ = DW_CFA_restore_extended;
6817 *p++ = 65;
6818 }
6819 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6820 == htab->glink_eh_frame->size);
6821 }
6822
7619e7c7
AM
6823 return TRUE;
6824}
0eb4a168 6825
93d1b056
AM
6826/* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6827 if it looks like nothing is using them. */
6828
6829static void
6830maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6831{
6832 struct elf_link_hash_entry *sda = lsect->sym;
6833
6834 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6835 {
6836 asection *s;
6837
6838 s = bfd_get_section_by_name (output_bfd, lsect->name);
6839 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6840 {
6841 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6842 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6843 {
6844 sda->def_regular = 0;
6845 /* This is somewhat magic. See elf_link_output_extsym. */
6846 sda->ref_dynamic = 1;
6847 sda->forced_local = 0;
6848 }
6849 }
6850 }
6851}
6852
6853void
6854ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6855{
6856 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6857
6858 if (htab != NULL)
6859 {
6860 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6861 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6862 }
6863}
6864
6865
0eb4a168
AM
6866/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6867
6868static bfd_boolean
6869ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6870{
6871 if (h->plt.plist != NULL
6872 && !h->def_regular
6873 && (!h->pointer_equality_needed
6874 || !h->ref_regular_nonweak))
6875 return FALSE;
6876
6877 return _bfd_elf_hash_symbol (h);
6878}
25dbc73a
AM
6879\f
6880#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6881
01017ef8
NS
6882/* Relaxation trampolines. r12 is available for clobbering (r11, is
6883 used for some functions that are allowed to break the ABI). */
25dbc73a
AM
6884static const int shared_stub_entry[] =
6885 {
6886 0x7c0802a6, /* mflr 0 */
6887 0x429f0005, /* bcl 20, 31, .Lxxx */
01017ef8
NS
6888 0x7d8802a6, /* mflr 12 */
6889 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
53291d1f 6890 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
25dbc73a 6891 0x7c0803a6, /* mtlr 0 */
01017ef8 6892 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6893 0x4e800420, /* bctr */
6894 };
6895
6896static const int stub_entry[] =
6897 {
01017ef8
NS
6898 0x3d800000, /* lis 12,xxx@ha */
6899 0x398c0000, /* addi 12,12,xxx@l */
6900 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6901 0x4e800420, /* bctr */
6902 };
6903
5446cbdf
AM
6904struct ppc_elf_relax_info
6905{
6906 unsigned int workaround_size;
d3e454b9 6907 unsigned int picfixup_size;
5446cbdf
AM
6908};
6909
6910/* This function implements long branch trampolines, and the ppc476
6911 icache bug workaround. Any section needing trampolines or patch
6912 space for the workaround has its size extended so that we can
53291d1f 6913 add trampolines at the end of the section. */
5446cbdf 6914
25dbc73a
AM
6915static bfd_boolean
6916ppc_elf_relax_section (bfd *abfd,
6917 asection *isec,
6918 struct bfd_link_info *link_info,
6919 bfd_boolean *again)
6920{
d3e454b9 6921 struct one_branch_fixup
25dbc73a 6922 {
d3e454b9 6923 struct one_branch_fixup *next;
25dbc73a 6924 asection *tsec;
01017ef8
NS
6925 /* Final link, can use the symbol offset. For a
6926 relocatable link we use the symbol's index. */
25dbc73a
AM
6927 bfd_vma toff;
6928 bfd_vma trampoff;
6929 };
7619e7c7 6930
25dbc73a
AM
6931 Elf_Internal_Shdr *symtab_hdr;
6932 bfd_byte *contents = NULL;
6933 Elf_Internal_Sym *isymbuf = NULL;
6934 Elf_Internal_Rela *internal_relocs = NULL;
5446cbdf 6935 Elf_Internal_Rela *irel, *irelend = NULL;
d3e454b9 6936 struct one_branch_fixup *branch_fixups = NULL;
5446cbdf 6937 struct ppc_elf_relax_info *relax_info = NULL;
9bc4e62b 6938 unsigned changes = 0;
5446cbdf 6939 bfd_boolean workaround_change;
d7128ce4 6940 struct ppc_elf_link_hash_table *htab;
d3e454b9 6941 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
a6aa5195 6942 asection *got2;
50248c89 6943 bfd_boolean maybe_pasted;
7619e7c7 6944
25dbc73a 6945 *again = FALSE;
7619e7c7 6946
5446cbdf 6947 /* No need to do anything with non-alloc or non-code sections. */
c87b5a93 6948 if ((isec->flags & SEC_ALLOC) == 0
a8ad78a7 6949 || (isec->flags & SEC_CODE) == 0
5446cbdf
AM
6950 || (isec->flags & SEC_LINKER_CREATED) != 0
6951 || isec->size < 4)
25dbc73a 6952 return TRUE;
7619e7c7 6953
c8a1f254
NS
6954 /* We cannot represent the required PIC relocs in the output, so don't
6955 do anything. The linker doesn't support mixing -shared and -r
6956 anyway. */
0e1862bb 6957 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
795bc6b3 6958 return TRUE;
5b914448 6959
5446cbdf
AM
6960 htab = ppc_elf_hash_table (link_info);
6961 if (htab == NULL)
6962 return TRUE;
6963
6964 isec->size = (isec->size + 3) & -4;
6965 if (isec->rawsize == 0)
6966 isec->rawsize = isec->size;
6967 trampbase = isec->size;
6968
53291d1f
AM
6969 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6970 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6971 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6972
d3e454b9
AM
6973 if (htab->params->ppc476_workaround
6974 || htab->params->pic_fixup > 0)
5446cbdf
AM
6975 {
6976 if (elf_section_data (isec)->sec_info == NULL)
6977 {
5446cbdf
AM
6978 elf_section_data (isec)->sec_info
6979 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6980 if (elf_section_data (isec)->sec_info == NULL)
6981 return FALSE;
6982 }
6983 relax_info = elf_section_data (isec)->sec_info;
6984 trampbase -= relax_info->workaround_size;
6985 }
6986
50248c89
AM
6987 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6988 || strcmp (isec->output_section->name, ".fini") == 0);
25dbc73a 6989 /* Space for a branch around any trampolines. */
5446cbdf
AM
6990 trampoff = trampbase;
6991 if (maybe_pasted && trampbase == isec->rawsize)
50248c89 6992 trampoff += 4;
7619e7c7 6993
0ffa91dd 6994 symtab_hdr = &elf_symtab_hdr (abfd);
d3e454b9
AM
6995 picfixup_size = 0;
6996 if (htab->params->branch_trampolines
6997 || htab->params->pic_fixup > 0)
7619e7c7 6998 {
5446cbdf
AM
6999 /* Get a copy of the native relocations. */
7000 if (isec->reloc_count != 0)
25dbc73a 7001 {
5446cbdf
AM
7002 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
7003 link_info->keep_memory);
7004 if (internal_relocs == NULL)
7005 goto error_return;
25dbc73a 7006 }
7619e7c7 7007
5446cbdf
AM
7008 got2 = bfd_get_section_by_name (abfd, ".got2");
7009
7010 irelend = internal_relocs + isec->reloc_count;
7011 for (irel = internal_relocs; irel < irelend; irel++)
25dbc73a 7012 {
5446cbdf
AM
7013 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
7014 bfd_vma toff, roff;
7015 asection *tsec;
d3e454b9 7016 struct one_branch_fixup *f;
5446cbdf 7017 size_t insn_offset = 0;
d3e454b9 7018 bfd_vma max_branch_offset = 0, val;
5446cbdf
AM
7019 bfd_byte *hit_addr;
7020 unsigned long t0;
7021 struct elf_link_hash_entry *h;
7022 struct plt_entry **plist;
7023 unsigned char sym_type;
7024
7025 switch (r_type)
7026 {
7027 case R_PPC_REL24:
7028 case R_PPC_LOCAL24PC:
7029 case R_PPC_PLTREL24:
7030 max_branch_offset = 1 << 25;
7031 break;
7032
7033 case R_PPC_REL14:
7034 case R_PPC_REL14_BRTAKEN:
7035 case R_PPC_REL14_BRNTAKEN:
7036 max_branch_offset = 1 << 15;
7037 break;
7fce784e 7038
d3e454b9
AM
7039 case R_PPC_ADDR16_HA:
7040 if (htab->params->pic_fixup > 0)
7041 break;
7042 continue;
7043
5446cbdf
AM
7044 default:
7045 continue;
7046 }
7047
7048 /* Get the value of the symbol referred to by the reloc. */
7049 h = NULL;
7050 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
25dbc73a 7051 {
5446cbdf
AM
7052 /* A local symbol. */
7053 Elf_Internal_Sym *isym;
7054
7055 /* Read this BFD's local symbols. */
25dbc73a 7056 if (isymbuf == NULL)
5446cbdf
AM
7057 {
7058 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7059 if (isymbuf == NULL)
7060 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7061 symtab_hdr->sh_info, 0,
7062 NULL, NULL, NULL);
7063 if (isymbuf == 0)
7064 goto error_return;
7065 }
7066 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7067 if (isym->st_shndx == SHN_UNDEF)
7068 tsec = bfd_und_section_ptr;
7069 else if (isym->st_shndx == SHN_ABS)
7070 tsec = bfd_abs_section_ptr;
7071 else if (isym->st_shndx == SHN_COMMON)
7072 tsec = bfd_com_section_ptr;
7073 else
7074 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7075
7076 toff = isym->st_value;
7077 sym_type = ELF_ST_TYPE (isym->st_info);
25dbc73a 7078 }
25dbc73a 7079 else
5446cbdf
AM
7080 {
7081 /* Global symbol handling. */
7082 unsigned long indx;
7fce784e 7083
5446cbdf
AM
7084 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7085 h = elf_sym_hashes (abfd)[indx];
7619e7c7 7086
5446cbdf
AM
7087 while (h->root.type == bfd_link_hash_indirect
7088 || h->root.type == bfd_link_hash_warning)
7089 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 7090
5446cbdf
AM
7091 if (h->root.type == bfd_link_hash_defined
7092 || h->root.type == bfd_link_hash_defweak)
7093 {
7094 tsec = h->root.u.def.section;
7095 toff = h->root.u.def.value;
7096 }
7097 else if (h->root.type == bfd_link_hash_undefined
7098 || h->root.type == bfd_link_hash_undefweak)
7099 {
7100 tsec = bfd_und_section_ptr;
0e1862bb 7101 toff = bfd_link_relocatable (link_info) ? indx : 0;
5446cbdf
AM
7102 }
7103 else
7104 continue;
7105
9f7552cf
AM
7106 /* If this branch is to __tls_get_addr then we may later
7107 optimise away the call. We won't be needing a long-
7108 branch stub in that case. */
0e1862bb 7109 if (bfd_link_executable (link_info)
9f7552cf
AM
7110 && h == htab->tls_get_addr
7111 && irel != internal_relocs)
7112 {
7113 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7114 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7115 unsigned int tls_mask = 0;
7116
7117 /* The previous reloc should be one of R_PPC_TLSGD or
7118 R_PPC_TLSLD, or for older object files, a reloc
7119 on the __tls_get_addr arg setup insn. Get tls
7120 mask bits from the symbol on that reloc. */
7121 if (t_symndx < symtab_hdr->sh_info)
7122 {
7123 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7124
7125 if (local_got_offsets != NULL)
7126 {
7127 struct plt_entry **local_plt = (struct plt_entry **)
7128 (local_got_offsets + symtab_hdr->sh_info);
7129 char *lgot_masks = (char *)
7130 (local_plt + symtab_hdr->sh_info);
7131 tls_mask = lgot_masks[t_symndx];
7132 }
7133 }
7134 else
7135 {
7136 struct elf_link_hash_entry *th
7137 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7138
7139 while (th->root.type == bfd_link_hash_indirect
7140 || th->root.type == bfd_link_hash_warning)
7141 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7142
7143 tls_mask
7144 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7145 }
7146
7147 /* The mask bits tell us if the call will be
7148 optimised away. */
7149 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7150 && (t_rtype == R_PPC_TLSGD
7151 || t_rtype == R_PPC_GOT_TLSGD16
7152 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7153 continue;
7154 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7155 && (t_rtype == R_PPC_TLSLD
7156 || t_rtype == R_PPC_GOT_TLSLD16
7157 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7158 continue;
7159 }
7160
5446cbdf
AM
7161 sym_type = h->type;
7162 }
7619e7c7 7163
d3e454b9
AM
7164 if (r_type == R_PPC_ADDR16_HA)
7165 {
7166 if (h != NULL
7167 && !h->def_regular
7168 && h->protected_def
7169 && ppc_elf_hash_entry (h)->has_addr16_ha
7170 && ppc_elf_hash_entry (h)->has_addr16_lo)
7171 picfixup_size += 12;
7172 continue;
7173 }
7174
5446cbdf
AM
7175 /* The condition here under which we call find_plt_ent must
7176 match that in relocate_section. If we call find_plt_ent here
7177 but not in relocate_section, or vice versa, then the branch
7178 destination used here may be incorrect. */
7179 plist = NULL;
7180 if (h != NULL)
25dbc73a 7181 {
5446cbdf
AM
7182 /* We know is_branch_reloc (r_type) is true. */
7183 if (h->type == STT_GNU_IFUNC
7184 || r_type == R_PPC_PLTREL24)
7185 plist = &h->plt.plist;
25dbc73a 7186 }
5446cbdf
AM
7187 else if (sym_type == STT_GNU_IFUNC
7188 && elf_local_got_offsets (abfd) != NULL)
c8a1f254 7189 {
5446cbdf
AM
7190 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7191 struct plt_entry **local_plt = (struct plt_entry **)
7192 (local_got_offsets + symtab_hdr->sh_info);
7193 plist = local_plt + ELF32_R_SYM (irel->r_info);
c8a1f254 7194 }
5446cbdf 7195 if (plist != NULL)
a9585d22 7196 {
5446cbdf
AM
7197 bfd_vma addend = 0;
7198 struct plt_entry *ent;
7199
0e1862bb 7200 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
5446cbdf
AM
7201 addend = irel->r_addend;
7202 ent = find_plt_ent (plist, got2, addend);
7203 if (ent != NULL)
a9585d22 7204 {
5446cbdf
AM
7205 if (htab->plt_type == PLT_NEW
7206 || h == NULL
7207 || !htab->elf.dynamic_sections_created
7208 || h->dynindx == -1)
7209 {
7210 tsec = htab->glink;
7211 toff = ent->glink_offset;
7212 }
7213 else
7214 {
ce558b89 7215 tsec = htab->elf.splt;
5446cbdf
AM
7216 toff = ent->plt.offset;
7217 }
de972ffa
AM
7218 }
7219 }
de972ffa 7220
5446cbdf
AM
7221 /* If the branch and target are in the same section, you have
7222 no hope of adding stubs. We'll error out later should the
7223 branch overflow. */
7224 if (tsec == isec)
7225 continue;
25dbc73a 7226
5446cbdf
AM
7227 /* There probably isn't any reason to handle symbols in
7228 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7229 attribute for a code section, and we are only looking at
7230 branches. However, implement it correctly here as a
7231 reference for other target relax_section functions. */
7232 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7233 {
7234 /* At this stage in linking, no SEC_MERGE symbol has been
7235 adjusted, so all references to such symbols need to be
7236 passed through _bfd_merged_section_offset. (Later, in
7237 relocate_section, all SEC_MERGE symbols *except* for
7238 section symbols have been adjusted.)
7239
7240 gas may reduce relocations against symbols in SEC_MERGE
7241 sections to a relocation against the section symbol when
7242 the original addend was zero. When the reloc is against
7243 a section symbol we should include the addend in the
7244 offset passed to _bfd_merged_section_offset, since the
7245 location of interest is the original symbol. On the
7246 other hand, an access to "sym+addend" where "sym" is not
7247 a section symbol should not include the addend; Such an
7248 access is presumed to be an offset from "sym"; The
7249 location of interest is just "sym". */
7250 if (sym_type == STT_SECTION)
7251 toff += irel->r_addend;
7252
7253 toff
7254 = _bfd_merged_section_offset (abfd, &tsec,
7255 elf_section_data (tsec)->sec_info,
7256 toff);
7257
7258 if (sym_type != STT_SECTION)
7259 toff += irel->r_addend;
7260 }
7261 /* PLTREL24 addends are special. */
7262 else if (r_type != R_PPC_PLTREL24)
25dbc73a 7263 toff += irel->r_addend;
7619e7c7 7264
5446cbdf 7265 /* Attempted -shared link of non-pic code loses. */
0e1862bb 7266 if ((!bfd_link_relocatable (link_info)
5446cbdf
AM
7267 && tsec == bfd_und_section_ptr)
7268 || tsec->output_section == NULL
7269 || (tsec->owner != NULL
7270 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7271 continue;
7619e7c7 7272
5446cbdf 7273 roff = irel->r_offset;
7de713b9 7274
5446cbdf
AM
7275 /* If the branch is in range, no need to do anything. */
7276 if (tsec != bfd_und_section_ptr
0e1862bb 7277 && (!bfd_link_relocatable (link_info)
5446cbdf
AM
7278 /* A relocatable link may have sections moved during
7279 final link, so do not presume they remain in range. */
7280 || tsec->output_section == isec->output_section))
7281 {
7282 bfd_vma symaddr, reladdr;
7619e7c7 7283
5446cbdf
AM
7284 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7285 reladdr = isec->output_section->vma + isec->output_offset + roff;
7286 if (symaddr - reladdr + max_branch_offset
7287 < 2 * max_branch_offset)
7288 continue;
7289 }
01017ef8 7290
5446cbdf 7291 /* Look for an existing fixup to this address. */
d3e454b9 7292 for (f = branch_fixups; f ; f = f->next)
5446cbdf
AM
7293 if (f->tsec == tsec && f->toff == toff)
7294 break;
252b5132 7295
5446cbdf
AM
7296 if (f == NULL)
7297 {
7298 size_t size;
7299 unsigned long stub_rtype;
25dbc73a 7300
5446cbdf
AM
7301 val = trampoff - roff;
7302 if (val >= max_branch_offset)
7303 /* Oh dear, we can't reach a trampoline. Don't try to add
7304 one. We'll report an error later. */
7305 continue;
252b5132 7306
0e1862bb 7307 if (bfd_link_pic (link_info))
5446cbdf
AM
7308 {
7309 size = 4 * ARRAY_SIZE (shared_stub_entry);
7310 insn_offset = 12;
7311 }
7312 else
7313 {
7314 size = 4 * ARRAY_SIZE (stub_entry);
7315 insn_offset = 0;
7316 }
7317 stub_rtype = R_PPC_RELAX;
ce558b89 7318 if (tsec == htab->elf.splt
5446cbdf
AM
7319 || tsec == htab->glink)
7320 {
7321 stub_rtype = R_PPC_RELAX_PLT;
7322 if (r_type == R_PPC_PLTREL24)
7323 stub_rtype = R_PPC_RELAX_PLTREL24;
7324 }
252b5132 7325
5446cbdf
AM
7326 /* Hijack the old relocation. Since we need two
7327 relocations for this use a "composite" reloc. */
7328 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7329 stub_rtype);
7330 irel->r_offset = trampoff + insn_offset;
7331 if (r_type == R_PPC_PLTREL24
7332 && stub_rtype != R_PPC_RELAX_PLTREL24)
7333 irel->r_addend = 0;
7334
7335 /* Record the fixup so we don't do it again this section. */
7336 f = bfd_malloc (sizeof (*f));
d3e454b9 7337 f->next = branch_fixups;
5446cbdf
AM
7338 f->tsec = tsec;
7339 f->toff = toff;
7340 f->trampoff = trampoff;
d3e454b9 7341 branch_fixups = f;
5446cbdf
AM
7342
7343 trampoff += size;
7344 changes++;
25dbc73a
AM
7345 }
7346 else
7347 {
5446cbdf
AM
7348 val = f->trampoff - roff;
7349 if (val >= max_branch_offset)
7350 continue;
252b5132 7351
5446cbdf
AM
7352 /* Nop out the reloc, since we're finalizing things here. */
7353 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7354 }
252b5132 7355
5446cbdf
AM
7356 /* Get the section contents. */
7357 if (contents == NULL)
25dbc73a 7358 {
5446cbdf
AM
7359 /* Get cached copy if it exists. */
7360 if (elf_section_data (isec)->this_hdr.contents != NULL)
7361 contents = elf_section_data (isec)->this_hdr.contents;
25dbc73a 7362 /* Go get them off disk. */
5446cbdf 7363 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
25dbc73a
AM
7364 goto error_return;
7365 }
252b5132 7366
5446cbdf
AM
7367 /* Fix up the existing branch to hit the trampoline. */
7368 hit_addr = contents + roff;
7369 switch (r_type)
7370 {
7371 case R_PPC_REL24:
7372 case R_PPC_LOCAL24PC:
7373 case R_PPC_PLTREL24:
7374 t0 = bfd_get_32 (abfd, hit_addr);
7375 t0 &= ~0x3fffffc;
7376 t0 |= val & 0x3fffffc;
7377 bfd_put_32 (abfd, t0, hit_addr);
7378 break;
252b5132 7379
5446cbdf
AM
7380 case R_PPC_REL14:
7381 case R_PPC_REL14_BRTAKEN:
7382 case R_PPC_REL14_BRNTAKEN:
7383 t0 = bfd_get_32 (abfd, hit_addr);
7384 t0 &= ~0xfffc;
7385 t0 |= val & 0xfffc;
7386 bfd_put_32 (abfd, t0, hit_addr);
7387 break;
7388 }
25dbc73a 7389 }
252b5132 7390
d3e454b9 7391 while (branch_fixups != NULL)
25dbc73a 7392 {
d3e454b9
AM
7393 struct one_branch_fixup *f = branch_fixups;
7394 branch_fixups = branch_fixups->next;
25dbc73a
AM
7395 free (f);
7396 }
5446cbdf 7397 }
252b5132 7398
5446cbdf
AM
7399 workaround_change = FALSE;
7400 newsize = trampoff;
795bc6b3 7401 if (htab->params->ppc476_workaround
0e1862bb 7402 && (!bfd_link_relocatable (link_info)
795bc6b3 7403 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
5446cbdf
AM
7404 {
7405 bfd_vma addr, end_addr;
7406 unsigned int crossings;
795bc6b3 7407 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf
AM
7408
7409 addr = isec->output_section->vma + isec->output_offset;
6128f9cf 7410 end_addr = addr + trampoff;
5446cbdf 7411 addr &= -pagesize;
795bc6b3 7412 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
5446cbdf
AM
7413 if (crossings != 0)
7414 {
7415 /* Keep space aligned, to ensure the patch code itself does
7416 not cross a page. Don't decrease size calculated on a
7417 previous pass as otherwise we might never settle on a layout. */
1e269e9b 7418 newsize = 15 - ((end_addr - 1) & 15);
5446cbdf
AM
7419 newsize += crossings * 16;
7420 if (relax_info->workaround_size < newsize)
7421 {
7422 relax_info->workaround_size = newsize;
7423 workaround_change = TRUE;
5446cbdf
AM
7424 }
7425 /* Ensure relocate_section is called. */
7426 isec->flags |= SEC_RELOC;
7427 }
7428 newsize = trampoff + relax_info->workaround_size;
7429 }
7430
d3e454b9
AM
7431 if (htab->params->pic_fixup > 0)
7432 {
7433 picfixup_size -= relax_info->picfixup_size;
7434 if (picfixup_size != 0)
7435 relax_info->picfixup_size += picfixup_size;
7436 newsize += relax_info->picfixup_size;
7437 }
7438
7439 if (changes != 0 || picfixup_size != 0 || workaround_change)
5446cbdf
AM
7440 isec->size = newsize;
7441
25dbc73a
AM
7442 if (isymbuf != NULL
7443 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 7444 {
25dbc73a
AM
7445 if (! link_info->keep_memory)
7446 free (isymbuf);
252b5132 7447 else
25dbc73a
AM
7448 {
7449 /* Cache the symbols for elf_link_input_bfd. */
7450 symtab_hdr->contents = (unsigned char *) isymbuf;
7451 }
252b5132
RH
7452 }
7453
25dbc73a
AM
7454 if (contents != NULL
7455 && elf_section_data (isec)->this_hdr.contents != contents)
7456 {
53291d1f 7457 if (!changes && !link_info->keep_memory)
25dbc73a
AM
7458 free (contents);
7459 else
7460 {
7461 /* Cache the section contents for elf_link_input_bfd. */
7462 elf_section_data (isec)->this_hdr.contents = contents;
7463 }
7464 }
252b5132 7465
d3e454b9 7466 changes += picfixup_size;
9bc4e62b 7467 if (changes != 0)
25dbc73a 7468 {
9bc4e62b
NS
7469 /* Append sufficient NOP relocs so we can write out relocation
7470 information for the trampolines. */
d4730f92 7471 Elf_Internal_Shdr *rel_hdr;
9bc4e62b
NS
7472 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7473 * sizeof (*new_relocs));
7474 unsigned ix;
5b914448 7475
9bc4e62b
NS
7476 if (!new_relocs)
7477 goto error_return;
7478 memcpy (new_relocs, internal_relocs,
7479 isec->reloc_count * sizeof (*new_relocs));
7480 for (ix = changes; ix--;)
7481 {
7482 irel = new_relocs + ix + isec->reloc_count;
7483
7484 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7485 }
7486 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 7487 free (internal_relocs);
9bc4e62b
NS
7488 elf_section_data (isec)->relocs = new_relocs;
7489 isec->reloc_count += changes;
d4730f92
BS
7490 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7491 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
25dbc73a 7492 }
5446cbdf
AM
7493 else if (internal_relocs != NULL
7494 && elf_section_data (isec)->relocs != internal_relocs)
9bc4e62b 7495 free (internal_relocs);
252b5132 7496
5446cbdf 7497 *again = changes != 0 || workaround_change;
b34976b6 7498 return TRUE;
25dbc73a
AM
7499
7500 error_return:
d3e454b9 7501 while (branch_fixups != NULL)
5446cbdf 7502 {
d3e454b9
AM
7503 struct one_branch_fixup *f = branch_fixups;
7504 branch_fixups = branch_fixups->next;
5446cbdf
AM
7505 free (f);
7506 }
25dbc73a
AM
7507 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7508 free (isymbuf);
7509 if (contents != NULL
7510 && elf_section_data (isec)->this_hdr.contents != contents)
7511 free (contents);
7512 if (internal_relocs != NULL
7513 && elf_section_data (isec)->relocs != internal_relocs)
7514 free (internal_relocs);
7515 return FALSE;
252b5132 7516}
252b5132 7517\f
8a696751
AM
7518/* What to do when ld finds relocations against symbols defined in
7519 discarded sections. */
7520
7521static unsigned int
7522ppc_elf_action_discarded (asection *sec)
7523{
7524 if (strcmp (".fixup", sec->name) == 0)
7525 return 0;
7526
7527 if (strcmp (".got2", sec->name) == 0)
7528 return 0;
7529
7530 return _bfd_elf_default_action_discarded (sec);
7531}
c9a2f333 7532\f
25dbc73a 7533/* Fill in the address for a pointer generated in a linker section. */
252b5132 7534
25dbc73a 7535static bfd_vma
76750a2f 7536elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
7537 elf_linker_section_t *lsect,
7538 struct elf_link_hash_entry *h,
7539 bfd_vma relocation,
2bb04cf2 7540 const Elf_Internal_Rela *rel)
25dbc73a
AM
7541{
7542 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 7543
25dbc73a 7544 BFD_ASSERT (lsect != NULL);
252b5132 7545
25dbc73a 7546 if (h != NULL)
252b5132 7547 {
25dbc73a
AM
7548 /* Handle global symbol. */
7549 struct ppc_elf_link_hash_entry *eh;
252b5132 7550
25dbc73a 7551 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
7552 BFD_ASSERT (eh->elf.def_regular);
7553 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
7554 }
7555 else
7556 {
7557 /* Handle local symbol. */
7558 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 7559
0c8d6e5c 7560 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 7561 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
7562 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7563 }
252b5132 7564
76750a2f
AM
7565 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7566 rel->r_addend,
7567 lsect);
7568 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 7569
76750a2f
AM
7570 /* Offset will always be a multiple of four, so use the bottom bit
7571 as a "written" flag. */
7572 if ((linker_section_ptr->offset & 1) == 0)
7573 {
7574 bfd_put_32 (lsect->section->owner,
7575 relocation + linker_section_ptr->addend,
7576 lsect->section->contents + linker_section_ptr->offset);
7577 linker_section_ptr->offset += 1;
252b5132
RH
7578 }
7579
bd6c6e2b
AM
7580 relocation = (lsect->section->output_section->vma
7581 + lsect->section->output_offset
76750a2f 7582 + linker_section_ptr->offset - 1
bd6c6e2b 7583 - SYM_VAL (lsect->sym));
252b5132 7584
25dbc73a
AM
7585#ifdef DEBUG
7586 fprintf (stderr,
7587 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7588 lsect->name, (long) relocation, (long) relocation);
7589#endif
252b5132 7590
bd6c6e2b 7591 return relocation;
252b5132 7592}
25dbc73a 7593
e054468f
AM
7594#define PPC_LO(v) ((v) & 0xffff)
7595#define PPC_HI(v) (((v) >> 16) & 0xffff)
7596#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7597
7598static void
a7f2871e 7599write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
e054468f
AM
7600 struct bfd_link_info *info)
7601{
7602 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7603 bfd *output_bfd = info->output_bfd;
7604 bfd_vma plt;
e054468f
AM
7605
7606 plt = ((ent->plt.offset & ~1)
7607 + plt_sec->output_section->vma
7608 + plt_sec->output_offset);
e054468f 7609
0e1862bb 7610 if (bfd_link_pic (info))
e054468f
AM
7611 {
7612 bfd_vma got = 0;
7613
7614 if (ent->addend >= 32768)
7615 got = (ent->addend
7616 + ent->sec->output_section->vma
7617 + ent->sec->output_offset);
7618 else if (htab->elf.hgot != NULL)
7619 got = SYM_VAL (htab->elf.hgot);
7620
7621 plt -= got;
7622
7623 if (plt + 0x8000 < 0x10000)
7624 {
7625 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7626 p += 4;
7627 bfd_put_32 (output_bfd, MTCTR_11, p);
7628 p += 4;
7629 bfd_put_32 (output_bfd, BCTR, p);
7630 p += 4;
da3a2088 7631 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
e054468f
AM
7632 p += 4;
7633 }
7634 else
7635 {
7636 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7637 p += 4;
7638 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7639 p += 4;
7640 bfd_put_32 (output_bfd, MTCTR_11, p);
7641 p += 4;
7642 bfd_put_32 (output_bfd, BCTR, p);
7643 p += 4;
7644 }
7645 }
7646 else
7647 {
7648 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7649 p += 4;
7650 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7651 p += 4;
7652 bfd_put_32 (output_bfd, MTCTR_11, p);
7653 p += 4;
7654 bfd_put_32 (output_bfd, BCTR, p);
7655 p += 4;
7656 }
7657}
7658
bd6c6e2b
AM
7659/* Return true if symbol is defined statically. */
7660
7661static bfd_boolean
7662is_static_defined (struct elf_link_hash_entry *h)
7663{
7664 return ((h->root.type == bfd_link_hash_defined
7665 || h->root.type == bfd_link_hash_defweak)
7666 && h->root.u.def.section != NULL
7667 && h->root.u.def.section->output_section != NULL);
7668}
7669
2d0f3896
AM
7670/* If INSN is an opcode that may be used with an @tls operand, return
7671 the transformed insn for TLS optimisation, otherwise return 0. If
7672 REG is non-zero only match an insn with RB or RA equal to REG. */
7673
7674unsigned int
7675_bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7676{
7677 unsigned int rtra;
7678
7679 if ((insn & (0x3f << 26)) != 31 << 26)
7680 return 0;
7681
7682 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7683 rtra = insn & ((1 << 26) - (1 << 16));
7684 else if (((insn >> 16) & 0x1f) == reg)
7685 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7686 else
7687 return 0;
7688
7689 if ((insn & (0x3ff << 1)) == 266 << 1)
7690 /* add -> addi. */
7691 insn = 14 << 26;
7692 else if ((insn & (0x1f << 1)) == 23 << 1
7693 && ((insn & (0x1f << 6)) < 14 << 6
7694 || ((insn & (0x1f << 6)) >= 16 << 6
7695 && (insn & (0x1f << 6)) < 24 << 6)))
7696 /* load and store indexed -> dform. */
7697 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7698 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7699 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7700 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7701 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7702 /* lwax -> lwa. */
7703 insn = (58 << 26) | 2;
7704 else
7705 return 0;
7706 insn |= rtra;
7707 return insn;
7708}
7709
766bc656
AM
7710/* If INSN is an opcode that may be used with an @tprel operand, return
7711 the transformed insn for an undefined weak symbol, ie. with the
7712 thread pointer REG operand removed. Otherwise return 0. */
7713
7714unsigned int
7715_bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7716{
7717 if ((insn & (0x1f << 16)) == reg << 16
7718 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7719 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7720 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7721 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7722 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7723 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7724 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7725 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7726 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7727 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7728 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7729 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7730 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7731 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7732 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7733 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7734 && (insn & 3) != 1)
7735 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7736 && ((insn & 3) == 0 || (insn & 3) == 3))))
7737 {
7738 insn &= ~(0x1f << 16);
7739 }
7740 else if ((insn & (0x1f << 21)) == reg << 21
7741 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7742 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7743 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7744 {
7745 insn &= ~(0x1f << 21);
7746 insn |= (insn & (0x1f << 16)) << 5;
7747 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7748 insn -= 2 >> 26; /* convert to ori,oris */
7749 }
7750 else
7751 insn = 0;
7752 return insn;
7753}
7754
1fe532cf
AM
7755static bfd_boolean
7756is_insn_ds_form (unsigned int insn)
7757{
7758 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7759 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7760 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7761 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7762}
7763
7764static bfd_boolean
7765is_insn_dq_form (unsigned int insn)
7766{
a680de9a
PB
7767 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7768 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7769 && (insn & 3) == 1));
1fe532cf
AM
7770}
7771
252b5132
RH
7772/* The RELOCATE_SECTION function is called by the ELF backend linker
7773 to handle the relocations for a section.
7774
7775 The relocs are always passed as Rela structures; if the section
7776 actually uses Rel structures, the r_addend field will always be
7777 zero.
7778
7779 This function is responsible for adjust the section contents as
7780 necessary, and (if using Rela relocs and generating a
1049f94e 7781 relocatable output file) adjusting the reloc addend as
252b5132
RH
7782 necessary.
7783
7784 This function does not have to worry about setting the reloc
7785 address or the reloc symbol index.
7786
7787 LOCAL_SYMS is a pointer to the swapped in local symbols.
7788
7789 LOCAL_SECTIONS is an array giving the section in the input file
7790 corresponding to the st_shndx field of each local symbol.
7791
7792 The global hash table entry for the global symbols can be found
7793 via elf_sym_hashes (input_bfd).
7794
1049f94e 7795 When generating relocatable output, this function must handle
252b5132
RH
7796 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7797 going to be the section symbol corresponding to the output
7798 section, which means that the addend must be adjusted
7799 accordingly. */
7800
b34976b6 7801static bfd_boolean
55fd94b0
AM
7802ppc_elf_relocate_section (bfd *output_bfd,
7803 struct bfd_link_info *info,
7804 bfd *input_bfd,
7805 asection *input_section,
7806 bfd_byte *contents,
7807 Elf_Internal_Rela *relocs,
7808 Elf_Internal_Sym *local_syms,
7809 asection **local_sections)
252b5132 7810{
7619e7c7
AM
7811 Elf_Internal_Shdr *symtab_hdr;
7812 struct elf_link_hash_entry **sym_hashes;
7813 struct ppc_elf_link_hash_table *htab;
7814 Elf_Internal_Rela *rel;
c316a17c 7815 Elf_Internal_Rela *wrel;
7619e7c7
AM
7816 Elf_Internal_Rela *relend;
7817 Elf_Internal_Rela outrel;
f95f8542 7818 asection *got2;
252b5132 7819 bfd_vma *local_got_offsets;
b34976b6 7820 bfd_boolean ret = TRUE;
95f0d0d2 7821 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
3348747a 7822 bfd_boolean is_vxworks_tls;
d3e454b9
AM
7823 unsigned int picfixup_size = 0;
7824 struct ppc_elf_relax_info *relax_info = NULL;
b34976b6 7825
252b5132 7826#ifdef DEBUG
d003868e
AM
7827 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7828 "%ld relocations%s",
7829 input_bfd, input_section,
7830 (long) input_section->reloc_count,
0e1862bb 7831 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
252b5132
RH
7832#endif
7833
a6aa5195
AM
7834 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7835
e47cd125 7836 /* Initialize howto table if not already done. */
8da6118f 7837 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
7838 ppc_elf_howto_init ();
7839
7619e7c7 7840 htab = ppc_elf_hash_table (info);
252b5132 7841 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 7842 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 7843 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
7844 /* We have to handle relocations in vxworks .tls_vars sections
7845 specially, because the dynamic loader is 'weird'. */
0e1862bb 7846 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
3348747a
NS
7847 && !strcmp (input_section->output_section->name,
7848 ".tls_vars"));
d3e454b9
AM
7849 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7850 relax_info = elf_section_data (input_section)->sec_info;
c316a17c 7851 rel = wrel = relocs;
7619e7c7 7852 relend = relocs + input_section->reloc_count;
c316a17c 7853 for (; rel < relend; wrel++, rel++)
252b5132 7854 {
7619e7c7
AM
7855 enum elf_ppc_reloc_type r_type;
7856 bfd_vma addend;
7857 bfd_reloc_status_type r;
7858 Elf_Internal_Sym *sym;
7859 asection *sec;
7860 struct elf_link_hash_entry *h;
7861 const char *sym_name;
252b5132
RH
7862 reloc_howto_type *howto;
7863 unsigned long r_symndx;
7864 bfd_vma relocation;
91d6fa6a 7865 bfd_vma branch_bit, from;
7619e7c7
AM
7866 bfd_boolean unresolved_reloc;
7867 bfd_boolean warned;
7868 unsigned int tls_type, tls_mask, tls_gd;
e054468f 7869 struct plt_entry **ifunc;
86c95733 7870 struct reloc_howto_struct alt_howto;
7619e7c7 7871
c316a17c 7872 again:
55fd94b0
AM
7873 r_type = ELF32_R_TYPE (rel->r_info);
7874 sym = NULL;
7875 sec = NULL;
7876 h = NULL;
7619e7c7
AM
7877 unresolved_reloc = FALSE;
7878 warned = FALSE;
252b5132 7879 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 7880
252b5132
RH
7881 if (r_symndx < symtab_hdr->sh_info)
7882 {
7883 sym = local_syms + r_symndx;
7884 sec = local_sections[r_symndx];
26c61ae5 7885 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 7886
8517fae7 7887 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
7888 }
7889 else
7890 {
62d887d4
L
7891 bfd_boolean ignored;
7892
b2a8e766
AM
7893 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7894 r_symndx, symtab_hdr, sym_hashes,
7895 h, sec, relocation,
62d887d4 7896 unresolved_reloc, warned, ignored);
9abc968f 7897
252b5132 7898 sym_name = h->root.root.string;
7619e7c7
AM
7899 }
7900
dbaa2011 7901 if (sec != NULL && discarded_section (sec))
ab96bf03
AM
7902 {
7903 /* For relocs against symbols from removed linkonce sections,
7904 or sections discarded by a linker script, we just want the
7905 section contents zeroed. Avoid any special processing. */
7906 howto = NULL;
7907 if (r_type < R_PPC_max)
7908 howto = ppc_elf_howto_table[r_type];
c316a17c
AM
7909
7910 _bfd_clear_contents (howto, input_bfd, input_section,
7911 contents + rel->r_offset);
7912 wrel->r_offset = rel->r_offset;
7913 wrel->r_info = 0;
7914 wrel->r_addend = 0;
7915
7916 /* For ld -r, remove relocations in debug sections against
7917 sections defined in discarded sections. Not done for
7918 non-debug to preserve relocs in .eh_frame which the
7919 eh_frame editing code expects to be present. */
7920 if (bfd_link_relocatable (info)
7921 && (input_section->flags & SEC_DEBUGGING))
7922 wrel--;
7923
7924 continue;
ab96bf03
AM
7925 }
7926
0e1862bb 7927 if (bfd_link_relocatable (info))
ab96bf03
AM
7928 {
7929 if (got2 != NULL
7930 && r_type == R_PPC_PLTREL24
f75e0e33 7931 && rel->r_addend != 0)
ab96bf03
AM
7932 {
7933 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7934 addend specifies the GOT pointer offset within .got2. */
7935 rel->r_addend += got2->output_offset;
7936 }
53291d1f
AM
7937 if (r_type != R_PPC_RELAX_PLT
7938 && r_type != R_PPC_RELAX_PLTREL24
7939 && r_type != R_PPC_RELAX)
c316a17c 7940 goto copy_reloc;
ab96bf03
AM
7941 }
7942
7619e7c7
AM
7943 /* TLS optimizations. Replace instruction sequences and relocs
7944 based on information we collected in tls_optimize. We edit
7945 RELOCS so that --emit-relocs will output something sensible
7946 for the final instruction stream. */
7947 tls_mask = 0;
7948 tls_gd = 0;
727fc41e
AM
7949 if (h != NULL)
7950 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7951 else if (local_got_offsets != NULL)
7619e7c7 7952 {
e054468f 7953 struct plt_entry **local_plt;
727fc41e 7954 char *lgot_masks;
e054468f
AM
7955 local_plt
7956 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7957 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
727fc41e 7958 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM
7959 }
7960
7961 /* Ensure reloc mapping code below stays sane. */
7962 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7963 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7964 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7965 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7966 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7967 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7968 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7969 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7970 abort ();
7971 switch (r_type)
7972 {
7973 default:
7974 break;
7975
7976 case R_PPC_GOT_TPREL16:
7977 case R_PPC_GOT_TPREL16_LO:
e054468f 7978 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7979 && (tls_mask & TLS_TPREL) == 0)
7980 {
7981 bfd_vma insn;
91d6fa6a 7982
95f0d0d2 7983 insn = bfd_get_32 (input_bfd,
c316a17c 7984 contents + rel->r_offset - d_offset);
7619e7c7
AM
7985 insn &= 31 << 21;
7986 insn |= 0x3c020000; /* addis 0,2,0 */
95f0d0d2 7987 bfd_put_32 (input_bfd, insn,
c316a17c 7988 contents + rel->r_offset - d_offset);
7619e7c7
AM
7989 r_type = R_PPC_TPREL16_HA;
7990 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7991 }
7992 break;
7993
7994 case R_PPC_TLS:
e054468f 7995 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7996 && (tls_mask & TLS_TPREL) == 0)
7997 {
2d0f3896
AM
7998 bfd_vma insn;
7999
95f0d0d2 8000 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
2d0f3896
AM
8001 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
8002 if (insn == 0)
7619e7c7 8003 abort ();
95f0d0d2 8004 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7619e7c7
AM
8005 r_type = R_PPC_TPREL16_LO;
8006 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 8007
7619e7c7 8008 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
8009 PPC_TPREL16_LO which is at low-order half-word. */
8010 rel->r_offset += d_offset;
7619e7c7
AM
8011 }
8012 break;
8013
8014 case R_PPC_GOT_TLSGD16_HI:
8015 case R_PPC_GOT_TLSGD16_HA:
8016 tls_gd = TLS_TPRELGD;
e054468f 8017 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7619e7c7
AM
8018 goto tls_gdld_hi;
8019 break;
8020
8021 case R_PPC_GOT_TLSLD16_HI:
8022 case R_PPC_GOT_TLSLD16_HA:
e054468f 8023 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7
AM
8024 {
8025 tls_gdld_hi:
8026 if ((tls_mask & tls_gd) != 0)
8027 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8028 + R_PPC_GOT_TPREL16);
8029 else
8030 {
4fe5ca5b 8031 rel->r_offset -= d_offset;
95f0d0d2 8032 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7619e7c7
AM
8033 r_type = R_PPC_NONE;
8034 }
8035 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8036 }
8037 break;
8038
8039 case R_PPC_GOT_TLSGD16:
8040 case R_PPC_GOT_TLSGD16_LO:
8041 tls_gd = TLS_TPRELGD;
e054468f 8042 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 8043 goto tls_ldgd_opt;
7619e7c7
AM
8044 break;
8045
8046 case R_PPC_GOT_TLSLD16:
8047 case R_PPC_GOT_TLSLD16_LO:
e054468f 8048 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7 8049 {
3a71aa26 8050 unsigned int insn1, insn2;
b7fcf6f6 8051 bfd_vma offset;
7619e7c7 8052
b7fcf6f6 8053 tls_ldgd_opt:
727fc41e
AM
8054 offset = (bfd_vma) -1;
8055 /* If not using the newer R_PPC_TLSGD/LD to mark
8056 __tls_get_addr calls, we must trust that the call
8057 stays with its arg setup insns, ie. that the next
8058 reloc is the __tls_get_addr call associated with
8059 the current reloc. Edit both insns. */
8060 if (input_section->has_tls_get_addr_call
8061 && rel + 1 < relend
8062 && branch_reloc_hash_match (input_bfd, rel + 1,
8063 htab->tls_get_addr))
8064 offset = rel[1].r_offset;
b86ac8e3
AM
8065 /* We read the low GOT_TLS insn because we need to keep
8066 the destination reg. It may be something other than
8067 the usual r3, and moved to r3 before the call by
8068 intervening code. */
95f0d0d2 8069 insn1 = bfd_get_32 (input_bfd,
b86ac8e3 8070 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
8071 if ((tls_mask & tls_gd) != 0)
8072 {
8073 /* IE */
b86ac8e3 8074 insn1 &= (0x1f << 21) | (0x1f << 16);
b7fcf6f6 8075 insn1 |= 32 << 26; /* lwz */
727fc41e
AM
8076 if (offset != (bfd_vma) -1)
8077 {
f58d5a2d 8078 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e 8079 insn2 = 0x7c631214; /* add 3,3,2 */
95f0d0d2 8080 bfd_put_32 (input_bfd, insn2, contents + offset);
727fc41e 8081 }
b7fcf6f6
AM
8082 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8083 + R_PPC_GOT_TPREL16);
8084 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8085 }
8086 else
8087 {
8088 /* LE */
b86ac8e3
AM
8089 insn1 &= 0x1f << 21;
8090 insn1 |= 0x3c020000; /* addis r,2,0 */
7619e7c7
AM
8091 if (tls_gd == 0)
8092 {
b7fcf6f6 8093 /* Was an LD reloc. */
1d483afe
AM
8094 for (r_symndx = 0;
8095 r_symndx < symtab_hdr->sh_info;
8096 r_symndx++)
8097 if (local_sections[r_symndx] == sec)
8098 break;
8099 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 8100 r_symndx = STN_UNDEF;
b7fcf6f6 8101 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 8102 if (r_symndx != STN_UNDEF)
1d483afe
AM
8103 rel->r_addend -= (local_syms[r_symndx].st_value
8104 + sec->output_offset
8105 + sec->output_section->vma);
7619e7c7 8106 }
b7fcf6f6
AM
8107 r_type = R_PPC_TPREL16_HA;
8108 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM
8109 if (offset != (bfd_vma) -1)
8110 {
8111 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8112 rel[1].r_offset = offset + d_offset;
8113 rel[1].r_addend = rel->r_addend;
8114 insn2 = 0x38630000; /* addi 3,3,0 */
95f0d0d2 8115 bfd_put_32 (input_bfd, insn2, contents + offset);
727fc41e 8116 }
b7fcf6f6 8117 }
95f0d0d2 8118 bfd_put_32 (input_bfd, insn1,
b7fcf6f6 8119 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
8120 if (tls_gd == 0)
8121 {
8122 /* We changed the symbol on an LD reloc. Start over
8123 in order to get h, sym, sec etc. right. */
c316a17c 8124 goto again;
7619e7c7 8125 }
252b5132 8126 }
7619e7c7 8127 break;
727fc41e
AM
8128
8129 case R_PPC_TLSGD:
e054468f 8130 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
727fc41e
AM
8131 {
8132 unsigned int insn2;
8133 bfd_vma offset = rel->r_offset;
8134
8135 if ((tls_mask & TLS_TPRELGD) != 0)
8136 {
8137 /* IE */
8138 r_type = R_PPC_NONE;
8139 insn2 = 0x7c631214; /* add 3,3,2 */
8140 }
8141 else
8142 {
8143 /* LE */
8144 r_type = R_PPC_TPREL16_LO;
8145 rel->r_offset += d_offset;
8146 insn2 = 0x38630000; /* addi 3,3,0 */
8147 }
8148 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
95f0d0d2 8149 bfd_put_32 (input_bfd, insn2, contents + offset);
727fc41e
AM
8150 /* Zap the reloc on the _tls_get_addr call too. */
8151 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 8152 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
8153 }
8154 break;
8155
8156 case R_PPC_TLSLD:
e054468f 8157 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
727fc41e
AM
8158 {
8159 unsigned int insn2;
8160
8161 for (r_symndx = 0;
8162 r_symndx < symtab_hdr->sh_info;
8163 r_symndx++)
8164 if (local_sections[r_symndx] == sec)
8165 break;
8166 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 8167 r_symndx = STN_UNDEF;
727fc41e 8168 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 8169 if (r_symndx != STN_UNDEF)
727fc41e
AM
8170 rel->r_addend -= (local_syms[r_symndx].st_value
8171 + sec->output_offset
8172 + sec->output_section->vma);
8173
8174 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8175 rel->r_offset += d_offset;
8176 insn2 = 0x38630000; /* addi 3,3,0 */
95f0d0d2 8177 bfd_put_32 (input_bfd, insn2,
727fc41e
AM
8178 contents + rel->r_offset - d_offset);
8179 /* Zap the reloc on the _tls_get_addr call too. */
8180 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
f58d5a2d 8181 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
c316a17c 8182 goto again;
727fc41e
AM
8183 }
8184 break;
7619e7c7
AM
8185 }
8186
8187 /* Handle other relocations that tweak non-addend part of insn. */
8188 branch_bit = 0;
8189 switch (r_type)
8190 {
8191 default:
8192 break;
8193
8194 /* Branch taken prediction relocations. */
8195 case R_PPC_ADDR14_BRTAKEN:
8196 case R_PPC_REL14_BRTAKEN:
8197 branch_bit = BRANCH_PREDICT_BIT;
1a0670f3 8198 /* Fall through. */
7619e7c7 8199
4cc11e76 8200 /* Branch not taken prediction relocations. */
7619e7c7
AM
8201 case R_PPC_ADDR14_BRNTAKEN:
8202 case R_PPC_REL14_BRNTAKEN:
91d6fa6a
NC
8203 {
8204 bfd_vma insn;
7619e7c7 8205
95f0d0d2 8206 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
91d6fa6a
NC
8207 insn &= ~BRANCH_PREDICT_BIT;
8208 insn |= branch_bit;
7619e7c7 8209
91d6fa6a
NC
8210 from = (rel->r_offset
8211 + input_section->output_offset
8212 + input_section->output_section->vma);
7619e7c7 8213
91d6fa6a
NC
8214 /* Invert 'y' bit if not the default. */
8215 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8216 insn ^= BRANCH_PREDICT_BIT;
8217
95f0d0d2 8218 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
91d6fa6a
NC
8219 break;
8220 }
252b5132
RH
8221 }
8222
d3e454b9
AM
8223 if (ELIMINATE_COPY_RELOCS
8224 && h != NULL
8225 && !h->def_regular
8226 && h->protected_def
8227 && ppc_elf_hash_entry (h)->has_addr16_ha
8228 && ppc_elf_hash_entry (h)->has_addr16_lo
8229 && htab->params->pic_fixup > 0)
8230 {
8231 /* Convert lis;addi or lis;load/store accessing a protected
8232 variable defined in a shared library to PIC. */
8233 unsigned int insn;
8234
8235 if (r_type == R_PPC_ADDR16_HA)
8236 {
95f0d0d2 8237 insn = bfd_get_32 (input_bfd,
d3e454b9
AM
8238 contents + rel->r_offset - d_offset);
8239 if ((insn & (0x3f << 26)) == (15u << 26)
8240 && (insn & (0x1f << 16)) == 0 /* lis */)
8241 {
8242 bfd_byte *p;
8243 bfd_vma off;
8244 bfd_vma got_addr;
8245
8246 p = (contents + input_section->size
8247 - relax_info->workaround_size
8248 - relax_info->picfixup_size
8249 + picfixup_size);
8250 off = (p - contents) - (rel->r_offset - d_offset);
8251 if (off > 0x1fffffc || (off & 3) != 0)
8252 info->callbacks->einfo
174d0a74 8253 (_("%H: fixup branch overflow\n"),
d3e454b9
AM
8254 input_bfd, input_section, rel->r_offset);
8255
95f0d0d2 8256 bfd_put_32 (input_bfd, B | off,
d3e454b9 8257 contents + rel->r_offset - d_offset);
ce558b89
AM
8258 got_addr = (htab->elf.sgot->output_section->vma
8259 + htab->elf.sgot->output_offset
d3e454b9 8260 + (h->got.offset & ~1));
c316a17c
AM
8261 wrel->r_offset = (p - contents) + d_offset;
8262 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8263 wrel->r_addend = got_addr;
d3e454b9 8264 insn &= ~0xffff;
4aef7643 8265 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
95f0d0d2 8266 bfd_put_32 (input_bfd, insn, p);
d3e454b9
AM
8267
8268 /* Convert lis to lwz, loading address from GOT. */
8269 insn &= ~0xffff;
8270 insn ^= (32u ^ 15u) << 26;
8271 insn |= (insn & (0x1f << 21)) >> 5;
8272 insn |= got_addr & 0xffff;
95f0d0d2 8273 bfd_put_32 (input_bfd, insn, p + 4);
d3e454b9 8274
95f0d0d2 8275 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
d3e454b9
AM
8276 picfixup_size += 12;
8277
8278 /* Use one of the spare relocs, so --emit-relocs
8279 output is reasonable. */
8280 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
c316a17c
AM
8281 wrel++, rel++;
8282 rel->r_offset = wrel[-1].r_offset + 4;
d3e454b9 8283 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
c316a17c 8284 rel->r_addend = wrel[-1].r_addend;
d3e454b9
AM
8285
8286 /* Continue on as if we had a got reloc, to output
8287 dynamic reloc. */
8288 r_type = R_PPC_GOT16_LO;
8289 }
8290 else
2c4d9cbe 8291 _bfd_error_handler
695344c0 8292 /* xgettext:c-format */
e3fbc3da 8293 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
d3e454b9
AM
8294 input_bfd, input_section, rel->r_offset,
8295 "R_PPC_ADDR16_HA", insn);
8296 }
8297 else if (r_type == R_PPC_ADDR16_LO)
8298 {
95f0d0d2 8299 insn = bfd_get_32 (input_bfd,
d3e454b9
AM
8300 contents + rel->r_offset - d_offset);
8301 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8302 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8303 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8304 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8305 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8306 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8307 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8308 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8309 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8310 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8311 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8312 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8313 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8314 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8315 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8316 && (insn & 3) != 1)
8317 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8318 && ((insn & 3) == 0 || (insn & 3) == 3)))
8319 {
8320 /* Arrange to apply the reloc addend, if any. */
8321 relocation = 0;
8322 unresolved_reloc = FALSE;
8323 rel->r_info = ELF32_R_INFO (0, r_type);
8324 }
8325 else
2c4d9cbe 8326 _bfd_error_handler
695344c0 8327 /* xgettext:c-format */
e3fbc3da 8328 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
d3e454b9
AM
8329 input_bfd, input_section, rel->r_offset,
8330 "R_PPC_ADDR16_LO", insn);
8331 }
8332 }
8333
e054468f 8334 ifunc = NULL;
25f23106 8335 if (!htab->is_vxworks)
e054468f 8336 {
de972ffa
AM
8337 struct plt_entry *ent;
8338
e054468f
AM
8339 if (h != NULL)
8340 {
8341 if (h->type == STT_GNU_IFUNC)
8342 ifunc = &h->plt.plist;
8343 }
de972ffa
AM
8344 else if (local_got_offsets != NULL
8345 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
e054468f 8346 {
de972ffa 8347 struct plt_entry **local_plt;
e054468f 8348
de972ffa
AM
8349 local_plt = (struct plt_entry **) (local_got_offsets
8350 + symtab_hdr->sh_info);
8351 ifunc = local_plt + r_symndx;
e054468f 8352 }
e054468f 8353
de972ffa
AM
8354 ent = NULL;
8355 if (ifunc != NULL
0e1862bb 8356 && (!bfd_link_pic (info)
de972ffa
AM
8357 || is_branch_reloc (r_type)))
8358 {
8359 addend = 0;
0e1862bb 8360 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
de972ffa
AM
8361 addend = rel->r_addend;
8362 ent = find_plt_ent (ifunc, got2, addend);
8363 }
8364 if (ent != NULL)
8365 {
888a7fc3
AM
8366 if (bfd_link_pic (info)
8367 && ent->sec != got2
8368 && htab->plt_type != PLT_NEW
8369 && (!htab->elf.dynamic_sections_created
8370 || h == NULL
8371 || h->dynindx == -1))
8372 {
8373 /* Uh oh, we are going to create a pic glink stub
8374 for an ifunc (here for h == NULL and later in
8375 finish_dynamic_symbol for h != NULL), and
8376 apparently are using code compiled with
8377 -mbss-plt. The difficulty is that -mbss-plt code
8378 gives no indication via a magic PLTREL24 addend
8379 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8380 is pointing into a .got2 section (and how far
8381 into .got2). */
8382 info->callbacks->einfo
695344c0 8383 /* xgettext:c-format */
174d0a74 8384 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
888a7fc3
AM
8385 input_bfd, input_section, rel->r_offset, sym_name);
8386 }
e054468f
AM
8387 if (h == NULL && (ent->plt.offset & 1) == 0)
8388 {
8389 Elf_Internal_Rela rela;
8390 bfd_byte *loc;
8391
ce558b89
AM
8392 rela.r_offset = (htab->elf.iplt->output_section->vma
8393 + htab->elf.iplt->output_offset
e054468f
AM
8394 + ent->plt.offset);
8395 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8396 rela.r_addend = relocation;
ce558b89
AM
8397 loc = htab->elf.irelplt->contents;
8398 loc += (htab->elf.irelplt->reloc_count++
25f23106 8399 * sizeof (Elf32_External_Rela));
e054468f 8400 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
82e66161 8401 htab->local_ifunc_resolver = 1;
e054468f
AM
8402
8403 ent->plt.offset |= 1;
8404 }
8405 if (h == NULL && (ent->glink_offset & 1) == 0)
8406 {
a7f2871e
AM
8407 unsigned char *p = ((unsigned char *) htab->glink->contents
8408 + ent->glink_offset);
ce558b89 8409 write_glink_stub (ent, htab->elf.iplt, p, info);
e054468f
AM
8410 ent->glink_offset |= 1;
8411 }
8412
8413 unresolved_reloc = FALSE;
8414 if (htab->plt_type == PLT_NEW
8415 || !htab->elf.dynamic_sections_created
c7e17e05
AM
8416 || h == NULL
8417 || h->dynindx == -1)
e054468f
AM
8418 relocation = (htab->glink->output_section->vma
8419 + htab->glink->output_offset
8420 + (ent->glink_offset & ~1));
8421 else
ce558b89
AM
8422 relocation = (htab->elf.splt->output_section->vma
8423 + htab->elf.splt->output_offset
e054468f
AM
8424 + ent->plt.offset);
8425 }
8426 }
8427
7619e7c7
AM
8428 addend = rel->r_addend;
8429 tls_type = 0;
8430 howto = NULL;
55fd94b0
AM
8431 if (r_type < R_PPC_max)
8432 howto = ppc_elf_howto_table[r_type];
7619e7c7 8433 switch (r_type)
252b5132
RH
8434 {
8435 default:
25f53a85 8436 info->callbacks->einfo
695344c0 8437 /* xgettext:c-format */
8de848d8 8438 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
d003868e 8439 input_bfd, (int) r_type, sym_name);
252b5132
RH
8440
8441 bfd_set_error (bfd_error_bad_value);
b34976b6 8442 ret = FALSE;
c316a17c 8443 goto copy_reloc;
252b5132 8444
7619e7c7
AM
8445 case R_PPC_NONE:
8446 case R_PPC_TLS:
727fc41e
AM
8447 case R_PPC_TLSGD:
8448 case R_PPC_TLSLD:
7619e7c7
AM
8449 case R_PPC_EMB_MRKREF:
8450 case R_PPC_GNU_VTINHERIT:
8451 case R_PPC_GNU_VTENTRY:
c316a17c 8452 goto copy_reloc;
7595d193 8453
7619e7c7
AM
8454 /* GOT16 relocations. Like an ADDR16 using the symbol's
8455 address in the GOT as relocation value instead of the
8456 symbol's value itself. Also, create a GOT entry for the
8457 symbol and put the symbol value there. */
8458 case R_PPC_GOT_TLSGD16:
8459 case R_PPC_GOT_TLSGD16_LO:
8460 case R_PPC_GOT_TLSGD16_HI:
8461 case R_PPC_GOT_TLSGD16_HA:
8462 tls_type = TLS_TLS | TLS_GD;
8463 goto dogot;
8464
8465 case R_PPC_GOT_TLSLD16:
8466 case R_PPC_GOT_TLSLD16_LO:
8467 case R_PPC_GOT_TLSLD16_HI:
8468 case R_PPC_GOT_TLSLD16_HA:
8469 tls_type = TLS_TLS | TLS_LD;
8470 goto dogot;
8471
8472 case R_PPC_GOT_TPREL16:
8473 case R_PPC_GOT_TPREL16_LO:
8474 case R_PPC_GOT_TPREL16_HI:
8475 case R_PPC_GOT_TPREL16_HA:
8476 tls_type = TLS_TLS | TLS_TPREL;
8477 goto dogot;
8478
8479 case R_PPC_GOT_DTPREL16:
8480 case R_PPC_GOT_DTPREL16_LO:
8481 case R_PPC_GOT_DTPREL16_HI:
8482 case R_PPC_GOT_DTPREL16_HA:
8483 tls_type = TLS_TLS | TLS_DTPREL;
8484 goto dogot;
8485
8486 case R_PPC_GOT16:
8487 case R_PPC_GOT16_LO:
8488 case R_PPC_GOT16_HI:
8489 case R_PPC_GOT16_HA:
727fc41e 8490 tls_mask = 0;
7619e7c7
AM
8491 dogot:
8492 {
8493 /* Relocation is to the entry for this symbol in the global
8494 offset table. */
8495 bfd_vma off;
8496 bfd_vma *offp;
8497 unsigned long indx;
8498
ce558b89 8499 if (htab->elf.sgot == NULL)
7619e7c7
AM
8500 abort ();
8501
8502 indx = 0;
8503 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 8504 && (h == NULL
f5385ebf 8505 || !h->def_dynamic))
7619e7c7
AM
8506 offp = &htab->tlsld_got.offset;
8507 else if (h != NULL)
8508 {
f0158f44
AM
8509 if (!htab->elf.dynamic_sections_created
8510 || h->dynindx == -1
8511 || SYMBOL_REFERENCES_LOCAL (info, h)
21d68fcd 8512 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
7619e7c7
AM
8513 /* This is actually a static link, or it is a
8514 -Bsymbolic link and the symbol is defined
8515 locally, or the symbol was forced to be local
8516 because of a version file. */
8517 ;
8518 else
8519 {
8520 indx = h->dynindx;
8521 unresolved_reloc = FALSE;
8522 }
8523 offp = &h->got.offset;
8524 }
8525 else
8526 {
8527 if (local_got_offsets == NULL)
8528 abort ();
8529 offp = &local_got_offsets[r_symndx];
8530 }
8531
8532 /* The offset must always be a multiple of 4. We use the
8533 least significant bit to record whether we have already
8534 processed this entry. */
8535 off = *offp;
8536 if ((off & 1) != 0)
8537 off &= ~1;
8538 else
8539 {
70bccea4
AM
8540 unsigned int tls_m = (tls_mask
8541 & (TLS_LD | TLS_GD | TLS_DTPREL
8542 | TLS_TPREL | TLS_TPRELGD));
8543
8544 if (offp == &htab->tlsld_got.offset)
8545 tls_m = TLS_LD;
8546 else if (h == NULL
f5385ebf 8547 || !h->def_dynamic)
70bccea4
AM
8548 tls_m &= ~TLS_LD;
8549
8550 /* We might have multiple got entries for this sym.
8551 Initialize them all. */
8552 do
7619e7c7 8553 {
70bccea4
AM
8554 int tls_ty = 0;
8555
8556 if ((tls_m & TLS_LD) != 0)
7619e7c7 8557 {
70bccea4
AM
8558 tls_ty = TLS_TLS | TLS_LD;
8559 tls_m &= ~TLS_LD;
8560 }
8561 else if ((tls_m & TLS_GD) != 0)
8562 {
8563 tls_ty = TLS_TLS | TLS_GD;
8564 tls_m &= ~TLS_GD;
8565 }
8566 else if ((tls_m & TLS_DTPREL) != 0)
8567 {
8568 tls_ty = TLS_TLS | TLS_DTPREL;
8569 tls_m &= ~TLS_DTPREL;
8570 }
8571 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8572 {
8573 tls_ty = TLS_TLS | TLS_TPREL;
8574 tls_m = 0;
7619e7c7 8575 }
7619e7c7 8576
70bccea4 8577 /* Generate relocs for the dynamic linker. */
f0158f44
AM
8578 if (indx != 0
8579 || (bfd_link_pic (info)
8580 && (h == NULL
21d68fcd 8581 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
f0158f44 8582 || offp == &htab->tlsld_got.offset)))
7619e7c7 8583 {
ce558b89 8584 asection *rsec = htab->elf.srelgot;
91d6fa6a 8585 bfd_byte * loc;
91e21fb7 8586
0bed072f 8587 if (ifunc != NULL)
82e66161
AM
8588 {
8589 rsec = htab->elf.irelplt;
8590 if (indx == 0)
8591 htab->local_ifunc_resolver = 1;
8592 else if (is_static_defined (h))
8593 htab->maybe_local_ifunc_resolver = 1;
8594 }
ce558b89
AM
8595 outrel.r_offset = (htab->elf.sgot->output_section->vma
8596 + htab->elf.sgot->output_offset
70bccea4 8597 + off);
e515b051 8598 outrel.r_addend = 0;
70bccea4
AM
8599 if (tls_ty & (TLS_LD | TLS_GD))
8600 {
8601 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
8602 if (tls_ty == (TLS_TLS | TLS_GD))
8603 {
25f23106
AM
8604 loc = rsec->contents;
8605 loc += (rsec->reloc_count++
70bccea4
AM
8606 * sizeof (Elf32_External_Rela));
8607 bfd_elf32_swap_reloca_out (output_bfd,
8608 &outrel, loc);
e515b051 8609 outrel.r_offset += 4;
70bccea4
AM
8610 outrel.r_info
8611 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
8612 }
8613 }
8614 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8615 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8616 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8617 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
25f23106 8618 else if (indx != 0)
70bccea4 8619 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
25f23106
AM
8620 else if (ifunc != NULL)
8621 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8622 else
8623 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
d6e14abc 8624 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM
8625 {
8626 outrel.r_addend += relocation;
8627 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
989f9879
AM
8628 {
8629 if (htab->elf.tls_sec == NULL)
8630 outrel.r_addend = 0;
8631 else
8632 outrel.r_addend -= htab->elf.tls_sec->vma;
8633 }
e515b051 8634 }
25f23106
AM
8635 loc = rsec->contents;
8636 loc += (rsec->reloc_count++
70bccea4
AM
8637 * sizeof (Elf32_External_Rela));
8638 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
8639 }
8640
70bccea4
AM
8641 /* Init the .got section contents if we're not
8642 emitting a reloc. */
8643 else
7619e7c7 8644 {
70bccea4
AM
8645 bfd_vma value = relocation;
8646
f0158f44 8647 if (tls_ty != 0)
70bccea4 8648 {
989f9879
AM
8649 if (htab->elf.tls_sec == NULL)
8650 value = 0;
8651 else
8652 {
f0158f44
AM
8653 if (tls_ty & TLS_LD)
8654 value = 0;
8655 else
8656 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
676ee2b5 8657 if (tls_ty & TLS_TPREL)
989f9879
AM
8658 value += DTP_OFFSET - TP_OFFSET;
8659 }
70bccea4 8660
f0158f44 8661 if (tls_ty & (TLS_LD | TLS_GD))
7b609f53 8662 {
95f0d0d2 8663 bfd_put_32 (input_bfd, value,
ce558b89 8664 htab->elf.sgot->contents + off + 4);
676ee2b5 8665 value = 1;
7b609f53 8666 }
70bccea4 8667 }
95f0d0d2 8668 bfd_put_32 (input_bfd, value,
ce558b89 8669 htab->elf.sgot->contents + off);
7619e7c7 8670 }
70bccea4
AM
8671
8672 off += 4;
8673 if (tls_ty & (TLS_LD | TLS_GD))
8674 off += 4;
7619e7c7 8675 }
70bccea4
AM
8676 while (tls_m != 0);
8677
8678 off = *offp;
8679 *offp = off | 1;
7619e7c7
AM
8680 }
8681
8682 if (off >= (bfd_vma) -2)
8683 abort ();
8684
70bccea4
AM
8685 if ((tls_type & TLS_TLS) != 0)
8686 {
8687 if (tls_type != (TLS_TLS | TLS_LD))
8688 {
8689 if ((tls_mask & TLS_LD) != 0
8690 && !(h == NULL
f5385ebf 8691 || !h->def_dynamic))
70bccea4
AM
8692 off += 8;
8693 if (tls_type != (TLS_TLS | TLS_GD))
8694 {
8695 if ((tls_mask & TLS_GD) != 0)
8696 off += 8;
8697 if (tls_type != (TLS_TLS | TLS_DTPREL))
8698 {
8699 if ((tls_mask & TLS_DTPREL) != 0)
8700 off += 4;
8701 }
8702 }
8703 }
8704 }
8705
d3e454b9
AM
8706 /* If here for a picfixup, we're done. */
8707 if (r_type != ELF32_R_TYPE (rel->r_info))
c316a17c 8708 goto copy_reloc;
d3e454b9 8709
ce558b89
AM
8710 relocation = (htab->elf.sgot->output_section->vma
8711 + htab->elf.sgot->output_offset
e87d4038
AM
8712 + off
8713 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
8714
8715 /* Addends on got relocations don't make much sense.
8716 x+off@got is actually x@got+off, and since the got is
8717 generated by a hash table traversal, the value in the
8718 got at entry m+n bears little relation to the entry m. */
8719 if (addend != 0)
25f53a85 8720 info->callbacks->einfo
695344c0 8721 /* xgettext:c-format */
174d0a74 8722 (_("%H: non-zero addend on %s reloc against `%s'\n"),
25f53a85 8723 input_bfd, input_section, rel->r_offset,
7b609f53 8724 howto->name,
7619e7c7
AM
8725 sym_name);
8726 }
86c95733 8727 break;
7619e7c7 8728
86c95733 8729 /* Relocations that need no special processing. */
7619e7c7 8730 case R_PPC_LOCAL24PC:
252b5132
RH
8731 /* It makes no sense to point a local relocation
8732 at a symbol not in this object. */
7b609f53 8733 if (unresolved_reloc)
252b5132 8734 {
1a72702b
AM
8735 (*info->callbacks->undefined_symbol) (info,
8736 h->root.root.string,
8737 input_bfd,
8738 input_section,
8739 rel->r_offset,
8740 TRUE);
c316a17c 8741 goto copy_reloc;
252b5132 8742 }
888a7fc3
AM
8743 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8744 {
8745 /* @local on an ifunc does not really make sense since
8746 the ifunc resolver can take you anywhere. More
8747 seriously, calls to ifuncs must go through a plt call
8748 stub, and for pic the plt call stubs uses r30 to
8749 access the PLT. The problem is that a call that is
8750 local won't have the +32k reloc addend trick marking
8751 -fPIC code, so the linker won't know whether r30 is
8752 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
695344c0 8753 /* xgettext:c-format */
174d0a74 8754 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
888a7fc3
AM
8755 input_bfd, input_section, rel->r_offset,
8756 h->root.root.string);
8757 }
252b5132
RH
8758 break;
8759
7619e7c7
AM
8760 case R_PPC_DTPREL16:
8761 case R_PPC_DTPREL16_LO:
8762 case R_PPC_DTPREL16_HI:
8763 case R_PPC_DTPREL16_HA:
989f9879
AM
8764 if (htab->elf.tls_sec != NULL)
8765 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8766 break;
8767
70bccea4
AM
8768 /* Relocations that may need to be propagated if this is a shared
8769 object. */
7619e7c7
AM
8770 case R_PPC_TPREL16:
8771 case R_PPC_TPREL16_LO:
8772 case R_PPC_TPREL16_HI:
8773 case R_PPC_TPREL16_HA:
766bc656
AM
8774 if (h != NULL
8775 && h->root.type == bfd_link_hash_undefweak
8776 && h->dynindx == -1)
8777 {
8778 /* Make this relocation against an undefined weak symbol
8779 resolve to zero. This is really just a tweak, since
8780 code using weak externs ought to check that they are
8781 defined before using them. */
8782 bfd_byte *p = contents + rel->r_offset - d_offset;
95f0d0d2 8783 unsigned int insn = bfd_get_32 (input_bfd, p);
766bc656
AM
8784 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8785 if (insn != 0)
95f0d0d2 8786 bfd_put_32 (input_bfd, insn, p);
766bc656
AM
8787 break;
8788 }
989f9879
AM
8789 if (htab->elf.tls_sec != NULL)
8790 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7 8791 /* The TPREL16 relocs shouldn't really be used in shared
7c8bbca5
AM
8792 libs or with non-local symbols as that will result in
8793 DT_TEXTREL being set, but support them anyway. */
7619e7c7
AM
8794 goto dodyn;
8795
8796 case R_PPC_TPREL32:
989f9879
AM
8797 if (htab->elf.tls_sec != NULL)
8798 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8799 goto dodyn;
8800
8801 case R_PPC_DTPREL32:
989f9879
AM
8802 if (htab->elf.tls_sec != NULL)
8803 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8804 goto dodyn;
8805
e515b051
AM
8806 case R_PPC_DTPMOD32:
8807 relocation = 1;
8808 addend = 0;
8809 goto dodyn;
8810
d7128ce4
AM
8811 case R_PPC_REL16:
8812 case R_PPC_REL16_LO:
8813 case R_PPC_REL16_HI:
8814 case R_PPC_REL16_HA:
a680de9a 8815 case R_PPC_REL16DX_HA:
d7128ce4
AM
8816 break;
8817
7619e7c7 8818 case R_PPC_REL32:
625af618
AM
8819 if (h == NULL || h == htab->elf.hgot)
8820 break;
8821 /* fall through */
8822
8823 case R_PPC_ADDR32:
8824 case R_PPC_ADDR16:
8825 case R_PPC_ADDR16_LO:
8826 case R_PPC_ADDR16_HI:
8827 case R_PPC_ADDR16_HA:
8828 case R_PPC_UADDR32:
8829 case R_PPC_UADDR16:
8830 goto dodyn;
8831
b9c361e0
JL
8832 case R_PPC_VLE_REL8:
8833 case R_PPC_VLE_REL15:
8834 case R_PPC_VLE_REL24:
625af618 8835 case R_PPC_REL24:
7619e7c7
AM
8836 case R_PPC_REL14:
8837 case R_PPC_REL14_BRTAKEN:
8838 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
8839 /* If these relocations are not to a named symbol, they can be
8840 handled right here, no need to bother the dynamic linker. */
89200bf8 8841 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 8842 || h == htab->elf.hgot)
252b5132 8843 break;
70bccea4 8844 /* fall through */
252b5132 8845
7619e7c7 8846 case R_PPC_ADDR24:
7619e7c7
AM
8847 case R_PPC_ADDR14:
8848 case R_PPC_ADDR14_BRTAKEN:
8849 case R_PPC_ADDR14_BRNTAKEN:
0e1862bb 8850 if (h != NULL && !bfd_link_pic (info))
625af618
AM
8851 break;
8852 /* fall through */
8853
7619e7c7 8854 dodyn:
3348747a
NS
8855 if ((input_section->flags & SEC_ALLOC) == 0
8856 || is_vxworks_tls)
c87b5a93 8857 break;
c87b5a93 8858
0e1862bb 8859 if ((bfd_link_pic (info)
89200bf8
AM
8860 && !(h != NULL
8861 && ((h->root.type == bfd_link_hash_undefined
954b63d4 8862 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
21d68fcd 8863 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
1d483afe 8864 && (must_be_dyn_reloc (info, r_type)
f6c52c13 8865 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe 8866 || (ELIMINATE_COPY_RELOCS
0e1862bb 8867 && !bfd_link_pic (info)
ee05f2fe
AM
8868 && h != NULL
8869 && h->dynindx != -1
f5385ebf 8870 && !h->non_got_ref
d3e454b9
AM
8871 && !h->def_regular
8872 && !(h->protected_def
8873 && ppc_elf_hash_entry (h)->has_addr16_ha
8874 && ppc_elf_hash_entry (h)->has_addr16_lo
8875 && htab->params->pic_fixup > 0)))
252b5132 8876 {
0bb2d96a 8877 int skip;
f95f8542
AM
8878 bfd_byte *loc;
8879 asection *sreloc;
82e66161
AM
8880 long indx = 0;
8881
252b5132 8882#ifdef DEBUG
55fd94b0
AM
8883 fprintf (stderr, "ppc_elf_relocate_section needs to "
8884 "create relocation for %s\n",
70bccea4
AM
8885 (h && h->root.root.string
8886 ? h->root.root.string : "<unknown>"));
252b5132
RH
8887#endif
8888
8889 /* When generating a shared object, these relocations
70bccea4
AM
8890 are copied into the output file to be resolved at run
8891 time. */
0bb2d96a 8892 skip = 0;
5b914448
AM
8893 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8894 input_section,
8895 rel->r_offset);
0bb2d96a
JJ
8896 if (outrel.r_offset == (bfd_vma) -1
8897 || outrel.r_offset == (bfd_vma) -2)
8898 skip = (int) outrel.r_offset;
252b5132
RH
8899 outrel.r_offset += (input_section->output_section->vma
8900 + input_section->output_offset);
8901
8902 if (skip)
8903 memset (&outrel, 0, sizeof outrel);
21d68fcd 8904 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 8905 {
82e66161
AM
8906 indx = h->dynindx;
8907 BFD_ASSERT (indx != -1);
7619e7c7 8908 unresolved_reloc = FALSE;
82e66161 8909 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH
8910 outrel.r_addend = rel->r_addend;
8911 }
8912 else
8913 {
47388f4c
AM
8914 outrel.r_addend = relocation + rel->r_addend;
8915
25f23106 8916 if (r_type != R_PPC_ADDR32)
252b5132 8917 {
25f23106
AM
8918 if (ifunc != NULL)
8919 {
8920 /* If we get here when building a static
8921 executable, then the libc startup function
8922 responsible for applying indirect function
8923 relocations is going to complain about
8924 the reloc type.
8925 If we get here when building a dynamic
8926 executable, it will be because we have
8927 a text relocation. The dynamic loader
8928 will set the text segment writable and
8929 non-executable to apply text relocations.
8930 So we'll segfault when trying to run the
8931 indirection function to resolve the reloc. */
25f53a85 8932 info->callbacks->einfo
695344c0 8933 /* xgettext:c-format */
174d0a74 8934 (_("%H: relocation %s for indirect "
25f53a85
AM
8935 "function %s unsupported\n"),
8936 input_bfd, input_section, rel->r_offset,
25f23106
AM
8937 howto->name,
8938 sym_name);
8939 ret = FALSE;
8940 }
cf35638d 8941 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
89200bf8 8942 ;
252b5132
RH
8943 else if (sec == NULL || sec->owner == NULL)
8944 {
8945 bfd_set_error (bfd_error_bad_value);
89200bf8 8946 ret = FALSE;
252b5132
RH
8947 }
8948 else
8949 {
8950 asection *osec;
8951
47388f4c
AM
8952 /* We are turning this relocation into one
8953 against a section symbol. It would be
8954 proper to subtract the symbol's value,
8955 osec->vma, from the emitted reloc addend,
25f23106
AM
8956 but ld.so expects buggy relocs.
8957 FIXME: Why not always use a zero index? */
252b5132
RH
8958 osec = sec->output_section;
8959 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
8960 if (indx == 0)
8961 {
8962 osec = htab->elf.text_index_section;
8963 indx = elf_section_data (osec)->dynindx;
8964 }
8965 BFD_ASSERT (indx != 0);
252b5132 8966#ifdef DEBUG
74541ad4 8967 if (indx == 0)
e460dd0d 8968 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
8969 indx, osec->name, osec->flags,
8970 h->root.root.string);
252b5132
RH
8971#endif
8972 }
8973
8974 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132 8975 }
25f23106
AM
8976 else if (ifunc != NULL)
8977 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8978 else
8979 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
8980 }
8981
82e66161
AM
8982 sreloc = elf_section_data (input_section)->sreloc;
8983 if (ifunc)
8984 {
8985 sreloc = htab->elf.irelplt;
8986 if (indx == 0)
8987 htab->local_ifunc_resolver = 1;
8988 else if (is_static_defined (h))
8989 htab->maybe_local_ifunc_resolver = 1;
8990 }
8991 if (sreloc == NULL)
8992 return FALSE;
8993
947216bf
AM
8994 loc = sreloc->contents;
8995 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8996 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 8997
2243deae 8998 if (skip == -1)
c316a17c 8999 goto copy_reloc;
2243deae 9000
f0158f44
AM
9001 /* This reloc will be computed at runtime. Clear the memory
9002 so that it contains a predictable value for prelink. */
9003 if (!skip)
2243deae
L
9004 {
9005 relocation = howto->pc_relative ? outrel.r_offset : 0;
9006 addend = 0;
9007 break;
9008 }
252b5132 9009 }
252b5132
RH
9010 break;
9011
32af9f6e
AM
9012 case R_PPC_RELAX_PLT:
9013 case R_PPC_RELAX_PLTREL24:
de972ffa
AM
9014 if (h != NULL)
9015 {
32af9f6e
AM
9016 struct plt_entry *ent;
9017 bfd_vma got2_addend = 0;
9018
9019 if (r_type == R_PPC_RELAX_PLTREL24)
9020 {
0e1862bb 9021 if (bfd_link_pic (info))
32af9f6e
AM
9022 got2_addend = addend;
9023 addend = 0;
9024 }
9025 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
de972ffa
AM
9026 if (htab->plt_type == PLT_NEW)
9027 relocation = (htab->glink->output_section->vma
9028 + htab->glink->output_offset
9029 + ent->glink_offset);
9030 else
ce558b89
AM
9031 relocation = (htab->elf.splt->output_section->vma
9032 + htab->elf.splt->output_offset
de972ffa
AM
9033 + ent->plt.offset);
9034 }
1a0670f3 9035 /* Fall through. */
b4a38de6 9036
32af9f6e 9037 case R_PPC_RELAX:
9abc968f 9038 {
53291d1f
AM
9039 const int *stub;
9040 size_t size;
9041 size_t insn_offset = rel->r_offset;
9042 unsigned int insn;
9abc968f 9043
0e1862bb 9044 if (bfd_link_pic (info))
53291d1f
AM
9045 {
9046 relocation -= (input_section->output_section->vma
9047 + input_section->output_offset
9048 + rel->r_offset - 4);
9049 stub = shared_stub_entry;
95f0d0d2
AM
9050 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
9051 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
9052 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
53291d1f
AM
9053 stub += 3;
9054 size = ARRAY_SIZE (shared_stub_entry) - 3;
9055 }
9056 else
9057 {
9058 stub = stub_entry;
9059 size = ARRAY_SIZE (stub_entry);
9060 }
9abc968f 9061
9abc968f 9062 relocation += addend;
0e1862bb 9063 if (bfd_link_relocatable (info))
53291d1f
AM
9064 relocation = 0;
9065
9066 /* First insn is HA, second is LO. */
9067 insn = *stub++;
9068 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
95f0d0d2 9069 bfd_put_32 (input_bfd, insn, contents + insn_offset);
53291d1f
AM
9070 insn_offset += 4;
9071
9072 insn = *stub++;
9073 insn |= relocation & 0xffff;
95f0d0d2 9074 bfd_put_32 (input_bfd, insn, contents + insn_offset);
53291d1f
AM
9075 insn_offset += 4;
9076 size -= 2;
9077
9078 while (size != 0)
9079 {
9080 insn = *stub++;
9081 --size;
95f0d0d2 9082 bfd_put_32 (input_bfd, insn, contents + insn_offset);
53291d1f
AM
9083 insn_offset += 4;
9084 }
9bc4e62b
NS
9085
9086 /* Rewrite the reloc and convert one of the trailing nop
9087 relocs to describe this relocation. */
9088 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9089 /* The relocs are at the bottom 2 bytes */
c316a17c
AM
9090 wrel->r_offset = rel->r_offset + d_offset;
9091 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9092 wrel->r_addend = rel->r_addend;
9093 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9094 wrel++, rel++;
9095 wrel->r_offset += 4;
9096 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9abc968f 9097 }
8517fae7 9098 continue;
deaaf2f3 9099
70bccea4 9100 /* Indirect .sdata relocation. */
7619e7c7 9101 case R_PPC_EMB_SDAI16:
c9a2f333 9102 BFD_ASSERT (htab->sdata[0].section != NULL);
bd6c6e2b
AM
9103 if (!is_static_defined (htab->sdata[0].sym))
9104 {
9105 unresolved_reloc = TRUE;
9106 break;
9107 }
7619e7c7 9108 relocation
76750a2f
AM
9109 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9110 h, relocation, rel);
bd6c6e2b 9111 addend = 0;
252b5132
RH
9112 break;
9113
70bccea4 9114 /* Indirect .sdata2 relocation. */
7619e7c7 9115 case R_PPC_EMB_SDA2I16:
c9a2f333 9116 BFD_ASSERT (htab->sdata[1].section != NULL);
bd6c6e2b
AM
9117 if (!is_static_defined (htab->sdata[1].sym))
9118 {
9119 unresolved_reloc = TRUE;
9120 break;
9121 }
7619e7c7 9122 relocation
76750a2f
AM
9123 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9124 h, relocation, rel);
bd6c6e2b 9125 addend = 0;
252b5132
RH
9126 break;
9127
70bccea4
AM
9128 /* Handle the TOC16 reloc. We want to use the offset within the .got
9129 section, not the actual VMA. This is appropriate when generating
9130 an embedded ELF object, for which the .got section acts like the
9131 AIX .toc section. */
7619e7c7 9132 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
9133 if (sec == NULL || sec->output_section == NULL)
9134 {
9135 unresolved_reloc = TRUE;
9136 break;
9137 }
a0f49396
NC
9138 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9139 ".got") == 0
9140 || strcmp (bfd_get_section_name (sec->owner, sec),
9141 ".cgot") == 0);
252b5132 9142
3b4f3a11 9143 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
9144 break;
9145
7619e7c7 9146 case R_PPC_PLTREL24:
f75e0e33
AM
9147 if (h != NULL && ifunc == NULL)
9148 {
cbf95972
AM
9149 struct plt_entry *ent;
9150
9151 ent = find_plt_ent (&h->plt.plist, got2,
9152 bfd_link_pic (info) ? addend : 0);
f75e0e33 9153 if (ent == NULL
ce558b89 9154 || htab->elf.splt == NULL)
f75e0e33
AM
9155 {
9156 /* We didn't make a PLT entry for this symbol. This
9157 happens when statically linking PIC code, or when
9158 using -Bsymbolic. */
9159 }
9160 else
9161 {
9162 /* Relocation is to the entry for this symbol in the
9163 procedure linkage table. */
9164 unresolved_reloc = FALSE;
9165 if (htab->plt_type == PLT_NEW)
9166 relocation = (htab->glink->output_section->vma
9167 + htab->glink->output_offset
9168 + ent->glink_offset);
9169 else
ce558b89
AM
9170 relocation = (htab->elf.splt->output_section->vma
9171 + htab->elf.splt->output_offset
f75e0e33
AM
9172 + ent->plt.offset);
9173 }
9174 }
252b5132 9175
f75e0e33
AM
9176 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9177 addend specifies the GOT pointer offset within .got2.
9178 Don't apply it to the relocation field. */
9179 addend = 0;
8da6118f 9180 break;
252b5132 9181
70bccea4 9182 /* Relocate against _SDA_BASE_. */
7619e7c7 9183 case R_PPC_SDAREL16:
252b5132
RH
9184 {
9185 const char *name;
bd6c6e2b 9186 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
252b5132 9187
bd6c6e2b
AM
9188 if (sec == NULL
9189 || sec->output_section == NULL
9190 || !is_static_defined (sda))
3b4f3a11
AM
9191 {
9192 unresolved_reloc = TRUE;
9193 break;
9194 }
bd6c6e2b 9195 addend -= SYM_VAL (sda);
3b4f3a11 9196
a0f49396 9197 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9198 if (!(strcmp (name, ".sdata") == 0
9199 || strcmp (name, ".sbss") == 0))
252b5132 9200 {
25f53a85 9201 info->callbacks->einfo
695344c0 9202 /* xgettext:c-format */
8de848d8 9203 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9204 "in the wrong output section (%s)\n"),
d003868e 9205 input_bfd,
55fd94b0
AM
9206 sym_name,
9207 howto->name,
9208 name);
252b5132 9209 }
252b5132
RH
9210 }
9211 break;
9212
70bccea4 9213 /* Relocate against _SDA2_BASE_. */
7619e7c7 9214 case R_PPC_EMB_SDA2REL:
252b5132
RH
9215 {
9216 const char *name;
bd6c6e2b 9217 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
252b5132 9218
bd6c6e2b
AM
9219 if (sec == NULL
9220 || sec->output_section == NULL
9221 || !is_static_defined (sda))
3b4f3a11
AM
9222 {
9223 unresolved_reloc = TRUE;
9224 break;
9225 }
bd6c6e2b 9226 addend -= SYM_VAL (sda);
3b4f3a11 9227
a0f49396 9228 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9229 if (!(strcmp (name, ".sdata2") == 0
9230 || strcmp (name, ".sbss2") == 0))
252b5132 9231 {
25f53a85 9232 info->callbacks->einfo
695344c0 9233 /* xgettext:c-format */
8de848d8 9234 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9235 "in the wrong output section (%s)\n"),
d003868e 9236 input_bfd,
55fd94b0
AM
9237 sym_name,
9238 howto->name,
9239 name);
252b5132 9240 }
252b5132
RH
9241 }
9242 break;
9243
b9c361e0 9244 case R_PPC_VLE_LO16A:
86c95733 9245 relocation = relocation + addend;
08dc996f
AM
9246 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9247 contents + rel->r_offset, relocation,
9248 split16a_type, htab->params->vle_reloc_fixup);
c316a17c 9249 goto copy_reloc;
b9c361e0
JL
9250
9251 case R_PPC_VLE_LO16D:
86c95733 9252 relocation = relocation + addend;
08dc996f
AM
9253 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9254 contents + rel->r_offset, relocation,
9255 split16d_type, htab->params->vle_reloc_fixup);
c316a17c 9256 goto copy_reloc;
b9c361e0
JL
9257
9258 case R_PPC_VLE_HI16A:
86c95733 9259 relocation = (relocation + addend) >> 16;
08dc996f
AM
9260 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9261 contents + rel->r_offset, relocation,
9262 split16a_type, htab->params->vle_reloc_fixup);
c316a17c 9263 goto copy_reloc;
b9c361e0
JL
9264
9265 case R_PPC_VLE_HI16D:
86c95733 9266 relocation = (relocation + addend) >> 16;
08dc996f
AM
9267 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9268 contents + rel->r_offset, relocation,
9269 split16d_type, htab->params->vle_reloc_fixup);
c316a17c 9270 goto copy_reloc;
b9c361e0
JL
9271
9272 case R_PPC_VLE_HA16A:
86c95733 9273 relocation = (relocation + addend + 0x8000) >> 16;
08dc996f
AM
9274 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9275 contents + rel->r_offset, relocation,
9276 split16a_type, htab->params->vle_reloc_fixup);
c316a17c 9277 goto copy_reloc;
b9c361e0
JL
9278
9279 case R_PPC_VLE_HA16D:
86c95733 9280 relocation = (relocation + addend + 0x8000) >> 16;
08dc996f
AM
9281 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9282 contents + rel->r_offset, relocation,
9283 split16d_type, htab->params->vle_reloc_fixup);
c316a17c 9284 goto copy_reloc;
b9c361e0 9285
70bccea4 9286 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7 9287 case R_PPC_EMB_SDA21:
b9c361e0 9288 case R_PPC_VLE_SDA21:
7619e7c7 9289 case R_PPC_EMB_RELSDA:
b9c361e0 9290 case R_PPC_VLE_SDA21_LO:
252b5132
RH
9291 {
9292 const char *name;
9293 int reg;
86c95733 9294 unsigned int insn;
bd6c6e2b 9295 struct elf_link_hash_entry *sda = NULL;
252b5132 9296
3b4f3a11
AM
9297 if (sec == NULL || sec->output_section == NULL)
9298 {
9299 unresolved_reloc = TRUE;
9300 break;
9301 }
9302
a0f49396 9303 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9304 if (strcmp (name, ".sdata") == 0
9305 || strcmp (name, ".sbss") == 0)
252b5132
RH
9306 {
9307 reg = 13;
bd6c6e2b 9308 sda = htab->sdata[0].sym;
252b5132 9309 }
93d1b056
AM
9310 else if (strcmp (name, ".sdata2") == 0
9311 || strcmp (name, ".sbss2") == 0)
252b5132
RH
9312 {
9313 reg = 2;
bd6c6e2b 9314 sda = htab->sdata[1].sym;
252b5132 9315 }
8da6118f
KH
9316 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9317 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
9318 {
9319 reg = 0;
9320 }
252b5132
RH
9321 else
9322 {
25f53a85 9323 info->callbacks->einfo
695344c0 9324 /* xgettext:c-format */
8de848d8 9325 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9326 "in the wrong output section (%s)\n"),
d003868e 9327 input_bfd,
55fd94b0
AM
9328 sym_name,
9329 howto->name,
9330 name);
252b5132
RH
9331
9332 bfd_set_error (bfd_error_bad_value);
b34976b6 9333 ret = FALSE;
c316a17c 9334 goto copy_reloc;
252b5132
RH
9335 }
9336
bd6c6e2b
AM
9337 if (sda != NULL)
9338 {
9339 if (!is_static_defined (sda))
9340 {
9341 unresolved_reloc = TRUE;
9342 break;
9343 }
9344 addend -= SYM_VAL (sda);
9345 }
9346
95f0d0d2 9347 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
b9c361e0
JL
9348 if (reg == 0
9349 && (r_type == R_PPC_VLE_SDA21
9350 || r_type == R_PPC_VLE_SDA21_LO))
9351 {
86c95733
AM
9352 relocation = relocation + addend;
9353 addend = 0;
9354
9355 /* Force e_li insn, keeping RT from original insn. */
9356 insn &= 0x1f << 21;
9357 insn |= 28u << 26;
9358
9359 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9360 /* Top 4 bits of value to 17..20. */
9361 insn |= (relocation & 0xf0000) >> 5;
9362 /* Next 5 bits of the value to 11..15. */
9363 insn |= (relocation & 0xf800) << 5;
9364 /* And the final 11 bits of the value to bits 21 to 31. */
9365 insn |= relocation & 0x7ff;
9366
95f0d0d2 9367 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
c3301df1
AM
9368
9369 if (r_type == R_PPC_VLE_SDA21
9370 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9371 goto overflow;
c316a17c 9372 goto copy_reloc;
b9c361e0
JL
9373 }
9374 else if (r_type == R_PPC_EMB_SDA21
9375 || r_type == R_PPC_VLE_SDA21
9376 || r_type == R_PPC_VLE_SDA21_LO)
91d6fa6a 9377 {
86c95733 9378 /* Fill in register field. */
252b5132 9379 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
252b5132 9380 }
95f0d0d2 9381 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
252b5132
RH
9382 }
9383 break;
9384
b9c361e0
JL
9385 case R_PPC_VLE_SDAREL_LO16A:
9386 case R_PPC_VLE_SDAREL_LO16D:
9387 case R_PPC_VLE_SDAREL_HI16A:
9388 case R_PPC_VLE_SDAREL_HI16D:
9389 case R_PPC_VLE_SDAREL_HA16A:
9390 case R_PPC_VLE_SDAREL_HA16D:
9391 {
9392 bfd_vma value;
9393 const char *name;
b9c361e0
JL
9394 struct elf_link_hash_entry *sda = NULL;
9395
9396 if (sec == NULL || sec->output_section == NULL)
9397 {
9398 unresolved_reloc = TRUE;
9399 break;
9400 }
9401
a0f49396 9402 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9403 if (strcmp (name, ".sdata") == 0
9404 || strcmp (name, ".sbss") == 0)
5499c7c7 9405 sda = htab->sdata[0].sym;
93d1b056
AM
9406 else if (strcmp (name, ".sdata2") == 0
9407 || strcmp (name, ".sbss2") == 0)
5499c7c7 9408 sda = htab->sdata[1].sym;
b9c361e0
JL
9409 else
9410 {
4eca0228 9411 _bfd_error_handler
695344c0 9412 /* xgettext:c-format */
b9c361e0
JL
9413 (_("%B: the target (%s) of a %s relocation is "
9414 "in the wrong output section (%s)"),
9415 input_bfd,
9416 sym_name,
9417 howto->name,
9418 name);
9419
9420 bfd_set_error (bfd_error_bad_value);
9421 ret = FALSE;
c316a17c 9422 goto copy_reloc;
b9c361e0
JL
9423 }
9424
5499c7c7 9425 if (sda == NULL || !is_static_defined (sda))
b9c361e0 9426 {
5499c7c7
AM
9427 unresolved_reloc = TRUE;
9428 break;
b9c361e0 9429 }
5499c7c7 9430 value = relocation + addend - SYM_VAL (sda);
86c95733
AM
9431
9432 if (r_type == R_PPC_VLE_SDAREL_LO16A)
08dc996f
AM
9433 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9434 contents + rel->r_offset, value,
9435 split16a_type,
9436 htab->params->vle_reloc_fixup);
86c95733 9437 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
08dc996f
AM
9438 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9439 contents + rel->r_offset, value,
9440 split16d_type,
9441 htab->params->vle_reloc_fixup);
86c95733 9442 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
b9c361e0 9443 {
86c95733 9444 value = value >> 16;
08dc996f
AM
9445 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9446 contents + rel->r_offset, value,
9447 split16a_type,
9448 htab->params->vle_reloc_fixup);
b9c361e0 9449 }
86c95733 9450 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
b9c361e0 9451 {
86c95733 9452 value = value >> 16;
08dc996f
AM
9453 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9454 contents + rel->r_offset, value,
9455 split16d_type,
9456 htab->params->vle_reloc_fixup);
b9c361e0 9457 }
86c95733 9458 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
b9c361e0 9459 {
86c95733 9460 value = (value + 0x8000) >> 16;
08dc996f
AM
9461 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9462 contents + rel->r_offset, value,
9463 split16a_type,
9464 htab->params->vle_reloc_fixup);
b9c361e0 9465 }
86c95733 9466 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
b9c361e0 9467 {
86c95733 9468 value = (value + 0x8000) >> 16;
08dc996f
AM
9469 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9470 contents + rel->r_offset, value,
9471 split16d_type,
9472 htab->params->vle_reloc_fixup);
b9c361e0
JL
9473 }
9474 }
c316a17c 9475 goto copy_reloc;
b9c361e0 9476
70bccea4 9477 /* Relocate against the beginning of the section. */
7619e7c7
AM
9478 case R_PPC_SECTOFF:
9479 case R_PPC_SECTOFF_LO:
9480 case R_PPC_SECTOFF_HI:
9481 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
9482 if (sec == NULL || sec->output_section == NULL)
9483 {
9484 unresolved_reloc = TRUE;
9485 break;
9486 }
252b5132 9487 addend -= sec->output_section->vma;
252b5132
RH
9488 break;
9489
70bccea4 9490 /* Negative relocations. */
7619e7c7
AM
9491 case R_PPC_EMB_NADDR32:
9492 case R_PPC_EMB_NADDR16:
9493 case R_PPC_EMB_NADDR16_LO:
9494 case R_PPC_EMB_NADDR16_HI:
9495 case R_PPC_EMB_NADDR16_HA:
8da6118f 9496 addend -= 2 * relocation;
252b5132
RH
9497 break;
9498
7619e7c7
AM
9499 case R_PPC_COPY:
9500 case R_PPC_GLOB_DAT:
9501 case R_PPC_JMP_SLOT:
9502 case R_PPC_RELATIVE:
e054468f 9503 case R_PPC_IRELATIVE:
7619e7c7
AM
9504 case R_PPC_PLT32:
9505 case R_PPC_PLTREL32:
9506 case R_PPC_PLT16_LO:
9507 case R_PPC_PLT16_HI:
9508 case R_PPC_PLT16_HA:
9509 case R_PPC_ADDR30:
9510 case R_PPC_EMB_RELSEC16:
9511 case R_PPC_EMB_RELST_LO:
9512 case R_PPC_EMB_RELST_HI:
9513 case R_PPC_EMB_RELST_HA:
9514 case R_PPC_EMB_BIT_FLD:
25f53a85 9515 info->callbacks->einfo
695344c0 9516 /* xgettext:c-format */
8de848d8 9517 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
d003868e 9518 input_bfd,
7619e7c7
AM
9519 howto->name,
9520 sym_name);
252b5132
RH
9521
9522 bfd_set_error (bfd_error_invalid_operation);
b34976b6 9523 ret = FALSE;
c316a17c 9524 goto copy_reloc;
7619e7c7 9525 }
252b5132 9526
7619e7c7
AM
9527 /* Do any further special processing. */
9528 switch (r_type)
9529 {
9530 default:
9531 break;
9532
9533 case R_PPC_ADDR16_HA:
d7128ce4 9534 case R_PPC_REL16_HA:
a680de9a 9535 case R_PPC_REL16DX_HA:
7619e7c7
AM
9536 case R_PPC_SECTOFF_HA:
9537 case R_PPC_TPREL16_HA:
9538 case R_PPC_DTPREL16_HA:
7619e7c7
AM
9539 case R_PPC_EMB_NADDR16_HA:
9540 case R_PPC_EMB_RELST_HA:
9541 /* It's just possible that this symbol is a weak symbol
7b609f53 9542 that's not actually defined anywhere. In that case,
7619e7c7
AM
9543 'sec' would be NULL, and we should leave the symbol
9544 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
9545 if (sec == NULL)
9546 break;
1a0670f3 9547 /* Fall through. */
5c5f6e17
AM
9548
9549 case R_PPC_PLT16_HA:
9550 case R_PPC_GOT16_HA:
9551 case R_PPC_GOT_TLSGD16_HA:
9552 case R_PPC_GOT_TLSLD16_HA:
9553 case R_PPC_GOT_TPREL16_HA:
9554 case R_PPC_GOT_DTPREL16_HA:
9555 /* Add 0x10000 if sign bit in 0:15 is set.
9556 Bits 0:15 are not used. */
9557 addend += 0x8000;
7619e7c7 9558 break;
1fe532cf
AM
9559
9560 case R_PPC_ADDR16:
9561 case R_PPC_ADDR16_LO:
9562 case R_PPC_GOT16:
9563 case R_PPC_GOT16_LO:
9564 case R_PPC_SDAREL16:
9565 case R_PPC_SECTOFF:
9566 case R_PPC_SECTOFF_LO:
9567 case R_PPC_DTPREL16:
9568 case R_PPC_DTPREL16_LO:
9569 case R_PPC_TPREL16:
9570 case R_PPC_TPREL16_LO:
9571 case R_PPC_GOT_TLSGD16:
9572 case R_PPC_GOT_TLSGD16_LO:
9573 case R_PPC_GOT_TLSLD16:
9574 case R_PPC_GOT_TLSLD16_LO:
9575 case R_PPC_GOT_DTPREL16:
9576 case R_PPC_GOT_DTPREL16_LO:
9577 case R_PPC_GOT_TPREL16:
9578 case R_PPC_GOT_TPREL16_LO:
9579 {
9580 /* The 32-bit ABI lacks proper relocations to deal with
9581 certain 64-bit instructions. Prevent damage to bits
9582 that make up part of the insn opcode. */
9583 unsigned int insn, mask, lobit;
9584
95f0d0d2 9585 insn = bfd_get_32 (input_bfd,
c316a17c 9586 contents + rel->r_offset - d_offset);
1fe532cf
AM
9587 mask = 0;
9588 if (is_insn_ds_form (insn))
9589 mask = 3;
9590 else if (is_insn_dq_form (insn))
9591 mask = 15;
9592 else
9593 break;
a680de9a
PB
9594 relocation += addend;
9595 addend = insn & mask;
9596 lobit = mask & relocation;
1fe532cf
AM
9597 if (lobit != 0)
9598 {
a680de9a 9599 relocation ^= lobit;
1fe532cf 9600 info->callbacks->einfo
695344c0 9601 /* xgettext:c-format */
174d0a74 9602 (_("%H: error: %s against `%s' not a multiple of %u\n"),
1fe532cf
AM
9603 input_bfd, input_section, rel->r_offset,
9604 howto->name, sym_name, mask + 1);
9605 bfd_set_error (bfd_error_bad_value);
9606 ret = FALSE;
9607 }
1fe532cf
AM
9608 }
9609 break;
252b5132
RH
9610 }
9611
252b5132 9612#ifdef DEBUG
55fd94b0
AM
9613 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9614 "offset = %ld, addend = %ld\n",
252b5132 9615 howto->name,
8da6118f 9616 (int) r_type,
252b5132
RH
9617 sym_name,
9618 r_symndx,
7619e7c7 9619 (long) rel->r_offset,
8da6118f 9620 (long) addend);
252b5132
RH
9621#endif
9622
7619e7c7
AM
9623 if (unresolved_reloc
9624 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
9625 && h->def_dynamic)
9626 && _bfd_elf_section_offset (output_bfd, info, input_section,
9627 rel->r_offset) != (bfd_vma) -1)
7619e7c7 9628 {
25f53a85 9629 info->callbacks->einfo
695344c0 9630 /* xgettext:c-format */
174d0a74 9631 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
25f53a85 9632 input_bfd, input_section, rel->r_offset,
7b609f53 9633 howto->name,
7619e7c7
AM
9634 sym_name);
9635 ret = FALSE;
9636 }
9637
86c95733
AM
9638 /* 16-bit fields in insns mostly have signed values, but a
9639 few insns have 16-bit unsigned values. Really, we should
9640 have different reloc types. */
9641 if (howto->complain_on_overflow != complain_overflow_dont
9642 && howto->dst_mask == 0xffff
9643 && (input_section->flags & SEC_CODE) != 0)
9644 {
9645 enum complain_overflow complain = complain_overflow_signed;
9646
9647 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9648 {
9649 unsigned int insn;
9650
9651 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM
9652 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9653 complain = complain_overflow_bitfield;
9654 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9655 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9656 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
86c95733
AM
9657 complain = complain_overflow_unsigned;
9658 }
9659 if (howto->complain_on_overflow != complain)
9660 {
9661 alt_howto = *howto;
9662 alt_howto.complain_on_overflow = complain;
9663 howto = &alt_howto;
9664 }
9665 }
9666
a680de9a
PB
9667 if (r_type == R_PPC_REL16DX_HA)
9668 {
9669 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9670 if (rel->r_offset + 4 > input_section->size)
9671 r = bfd_reloc_outofrange;
9672 else
9673 {
9674 unsigned int insn;
9675
9676 relocation += addend;
9677 relocation -= (rel->r_offset
9678 + input_section->output_offset
9679 + input_section->output_section->vma);
9680 relocation >>= 16;
9681 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9682 insn &= ~0x1fffc1;
9683 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9684 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9685 r = bfd_reloc_ok;
9686 }
9687 }
9688 else
9689 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9690 rel->r_offset, relocation, addend);
252b5132 9691
7619e7c7 9692 if (r != bfd_reloc_ok)
252b5132 9693 {
7619e7c7 9694 if (r == bfd_reloc_overflow)
252b5132 9695 {
c3301df1 9696 overflow:
8131c122
AM
9697 /* On code like "if (foo) foo();" don't report overflow
9698 on a branch to zero when foo is undefined. */
9699 if (!warned
9700 && !(h != NULL
9701 && (h->root.type == bfd_link_hash_undefweak
9702 || h->root.type == bfd_link_hash_undefined)
9703 && is_branch_reloc (r_type)))
1a72702b
AM
9704 info->callbacks->reloc_overflow
9705 (info, (h ? &h->root : NULL), sym_name, howto->name,
9706 rel->r_addend, input_bfd, input_section, rel->r_offset);
dc1bc0c9
RH
9707 }
9708 else
9709 {
25f53a85 9710 info->callbacks->einfo
695344c0 9711 /* xgettext:c-format */
174d0a74 9712 (_("%H: %s reloc against `%s': error %d\n"),
25f53a85
AM
9713 input_bfd, input_section, rel->r_offset,
9714 howto->name, sym_name, (int) r);
7619e7c7 9715 ret = FALSE;
252b5132
RH
9716 }
9717 }
c316a17c
AM
9718 copy_reloc:
9719 if (wrel != rel)
9720 *wrel = *rel;
9721 }
9722
9723 if (wrel != rel)
9724 {
9725 Elf_Internal_Shdr *rel_hdr;
9726 size_t deleted = rel - wrel;
9727
9728 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9729 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9730 if (rel_hdr->sh_size == 0)
9731 {
9732 /* It is too late to remove an empty reloc section. Leave
9733 one NONE reloc.
9734 ??? What is wrong with an empty section??? */
9735 rel_hdr->sh_size = rel_hdr->sh_entsize;
9736 deleted -= 1;
9737 wrel++;
9738 }
9739 relend = wrel;
9740 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9741 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9742 input_section->reloc_count -= deleted;
252b5132
RH
9743 }
9744
252b5132
RH
9745#ifdef DEBUG
9746 fprintf (stderr, "\n");
9747#endif
9748
53291d1f
AM
9749 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9750 && input_section->size != input_section->rawsize
9751 && (strcmp (input_section->output_section->name, ".init") == 0
9752 || strcmp (input_section->output_section->name, ".fini") == 0))
9753 {
9754 /* Branch around the trampolines. */
9755 unsigned int insn = B + input_section->size - input_section->rawsize;
9756 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9757 }
9758
5446cbdf 9759 if (htab->params->ppc476_workaround
795bc6b3 9760 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
0e1862bb 9761 && (!bfd_link_relocatable (info)
795bc6b3
AM
9762 || (input_section->output_section->alignment_power
9763 >= htab->params->pagesize_p2)))
5446cbdf 9764 {
5446cbdf 9765 bfd_vma start_addr, end_addr, addr;
795bc6b3 9766 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf 9767
5446cbdf 9768 if (relax_info->workaround_size != 0)
40fd06d1
AM
9769 {
9770 bfd_byte *p;
9771 unsigned int n;
9772 bfd_byte fill[4];
9773
9774 bfd_put_32 (input_bfd, BA, fill);
9775 p = contents + input_section->size - relax_info->workaround_size;
9776 n = relax_info->workaround_size >> 2;
9777 while (n--)
9778 {
9779 memcpy (p, fill, 4);
9780 p += 4;
9781 }
9782 }
5446cbdf
AM
9783
9784 /* The idea is: Replace the last instruction on a page with a
9785 branch to a patch area. Put the insn there followed by a
9786 branch back to the next page. Complicated a little by
9787 needing to handle moved conditional branches, and by not
9788 wanting to touch data-in-text. */
9789
9790 start_addr = (input_section->output_section->vma
9791 + input_section->output_offset);
9792 end_addr = (start_addr + input_section->size
9793 - relax_info->workaround_size);
9794 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9795 addr < end_addr;
9796 addr += pagesize)
9797 {
9798 bfd_vma offset = addr - start_addr;
9799 Elf_Internal_Rela *lo, *hi;
9800 bfd_boolean is_data;
9801 bfd_vma patch_off, patch_addr;
9802 unsigned int insn;
9803
9804 /* Do we have a data reloc at this offset? If so, leave
9805 the word alone. */
9806 is_data = FALSE;
9807 lo = relocs;
668e22e5
AM
9808 hi = relend;
9809 rel = NULL;
5446cbdf
AM
9810 while (lo < hi)
9811 {
9812 rel = lo + (hi - lo) / 2;
9813 if (rel->r_offset < offset)
9814 lo = rel + 1;
668e22e5 9815 else if (rel->r_offset > offset + 3)
5446cbdf
AM
9816 hi = rel;
9817 else
9818 {
9819 switch (ELF32_R_TYPE (rel->r_info))
9820 {
9821 case R_PPC_ADDR32:
9822 case R_PPC_UADDR32:
9823 case R_PPC_REL32:
9824 case R_PPC_ADDR30:
9825 is_data = TRUE;
9826 break;
9827 default:
9828 break;
9829 }
9830 break;
9831 }
9832 }
9833 if (is_data)
9834 continue;
9835
b4ab4364
AM
9836 /* Some instructions can be left alone too. Unconditional
9837 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9838 avoid the icache failure.
9839
9840 The problem occurs due to prefetch across a page boundary
9841 where stale instructions can be fetched from the next
9842 page, and the mechanism for flushing these bad
9843 instructions fails under certain circumstances. The
9844 unconditional branches:
9845 1) Branch: b, bl, ba, bla,
9846 2) Branch Conditional: bc, bca, bcl, bcla,
9847 3) Branch Conditional to Link Register: bclr, bclrl,
9848 where (2) and (3) have BO=0x14 making them unconditional,
9849 prevent the bad prefetch because the prefetch itself is
9850 affected by these instructions. This happens even if the
9851 instruction is not executed.
9852
9853 A bctr example:
9854 .
9855 . lis 9,new_page@ha
9856 . addi 9,9,new_page@l
9857 . mtctr 9
9858 . bctr
9859 . nop
9860 . nop
9861 . new_page:
9862 .
9863 The bctr is not predicted taken due to ctr not being
9864 ready, so prefetch continues on past the bctr into the
9865 new page which might have stale instructions. If they
9866 fail to be flushed, then they will be executed after the
9867 bctr executes. Either of the following modifications
9868 prevent the bad prefetch from happening in the first
9869 place:
9870 .
1b786873
L
9871 . lis 9,new_page@ha lis 9,new_page@ha
9872 . addi 9,9,new_page@l addi 9,9,new_page@l
9873 . mtctr 9 mtctr 9
9874 . bctr bctr
b4ab4364 9875 . nop b somewhere_else
1b786873
L
9876 . b somewhere_else nop
9877 . new_page: new_page:
b4ab4364 9878 . */
5446cbdf 9879 insn = bfd_get_32 (input_bfd, contents + offset);
b4ab4364
AM
9880 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9881 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9882 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
5446cbdf 9883 || ((insn & (0x3f << 26)) == (19u << 26)
b4ab4364
AM
9884 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9885 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
5446cbdf
AM
9886 continue;
9887
9888 patch_addr = (start_addr + input_section->size
9889 - relax_info->workaround_size);
9890 patch_addr = (patch_addr + 15) & -16;
9891 patch_off = patch_addr - start_addr;
9892 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
668e22e5
AM
9893
9894 if (rel != NULL
9895 && rel->r_offset >= offset
9896 && rel->r_offset < offset + 4)
9897 {
f8b44781
AM
9898 asection *sreloc;
9899
668e22e5
AM
9900 /* If the insn we are patching had a reloc, adjust the
9901 reloc r_offset so that the reloc applies to the moved
9902 location. This matters for -r and --emit-relocs. */
9903 if (rel + 1 != relend)
9904 {
9905 Elf_Internal_Rela tmp = *rel;
9906
9907 /* Keep the relocs sorted by r_offset. */
9908 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9909 relend[-1] = tmp;
9910 }
9911 relend[-1].r_offset += patch_off - offset;
f8b44781
AM
9912
9913 /* Adjust REL16 addends too. */
9914 switch (ELF32_R_TYPE (relend[-1].r_info))
9915 {
9916 case R_PPC_REL16:
9917 case R_PPC_REL16_LO:
9918 case R_PPC_REL16_HI:
9919 case R_PPC_REL16_HA:
9920 relend[-1].r_addend += patch_off - offset;
9921 break;
9922 default:
9923 break;
9924 }
9925
9926 /* If we are building a PIE or shared library with
9927 non-PIC objects, perhaps we had a dynamic reloc too?
9928 If so, the dynamic reloc must move with the insn. */
9929 sreloc = elf_section_data (input_section)->sreloc;
9930 if (sreloc != NULL)
9931 {
1d5c94cb 9932 Elf32_External_Rela *slo, *shi, *srelend;
f8b44781
AM
9933 bfd_vma soffset;
9934
1d5c94cb
AM
9935 slo = (Elf32_External_Rela *) sreloc->contents;
9936 shi = srelend = slo + sreloc->reloc_count;
f8b44781
AM
9937 soffset = (offset + input_section->output_section->vma
9938 + input_section->output_offset);
9939 while (slo < shi)
9940 {
1d5c94cb
AM
9941 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9942 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9943 &outrel);
f8b44781
AM
9944 if (outrel.r_offset < soffset)
9945 slo = srel + 1;
9946 else if (outrel.r_offset > soffset + 3)
9947 shi = srel;
9948 else
9949 {
1d5c94cb 9950 if (srel + 1 != srelend)
f8b44781 9951 {
1d5c94cb
AM
9952 memmove (srel, srel + 1,
9953 (srelend - (srel + 1)) * sizeof (*srel));
9954 srel = srelend - 1;
f8b44781
AM
9955 }
9956 outrel.r_offset += patch_off - offset;
1d5c94cb
AM
9957 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9958 (bfd_byte *) srel);
f8b44781
AM
9959 break;
9960 }
9961 }
9962 }
668e22e5
AM
9963 }
9964 else
9965 rel = NULL;
9966
5446cbdf
AM
9967 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9968 && (insn & 2) == 0 /* relative */)
9969 {
9970 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9971
9972 delta += offset - patch_off;
0e1862bb 9973 if (bfd_link_relocatable (info) && rel != NULL)
668e22e5 9974 delta = 0;
0e1862bb 9975 if (!bfd_link_relocatable (info) && rel != NULL)
668e22e5
AM
9976 {
9977 enum elf_ppc_reloc_type r_type;
9978
9979 r_type = ELF32_R_TYPE (relend[-1].r_info);
9980 if (r_type == R_PPC_REL14_BRTAKEN)
9981 insn |= BRANCH_PREDICT_BIT;
9982 else if (r_type == R_PPC_REL14_BRNTAKEN)
9983 insn &= ~BRANCH_PREDICT_BIT;
9984 else
9985 BFD_ASSERT (r_type == R_PPC_REL14);
9986
9987 if ((r_type == R_PPC_REL14_BRTAKEN
9988 || r_type == R_PPC_REL14_BRNTAKEN)
9989 && delta + 0x8000 < 0x10000
9990 && (bfd_signed_vma) delta < 0)
9991 insn ^= BRANCH_PREDICT_BIT;
9992 }
5446cbdf
AM
9993 if (delta + 0x8000 < 0x10000)
9994 {
9995 bfd_put_32 (input_bfd,
9996 (insn & ~0xfffc) | (delta & 0xfffc),
9997 contents + patch_off);
9998 patch_off += 4;
9999 bfd_put_32 (input_bfd,
10000 B | ((offset + 4 - patch_off) & 0x3fffffc),
10001 contents + patch_off);
10002 patch_off += 4;
10003 }
10004 else
10005 {
668e22e5
AM
10006 if (rel != NULL)
10007 {
10008 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
10009
10010 relend[-1].r_offset += 8;
10011 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
10012 }
5446cbdf
AM
10013 bfd_put_32 (input_bfd,
10014 (insn & ~0xfffc) | 8,
10015 contents + patch_off);
10016 patch_off += 4;
10017 bfd_put_32 (input_bfd,
10018 B | ((offset + 4 - patch_off) & 0x3fffffc),
10019 contents + patch_off);
10020 patch_off += 4;
10021 bfd_put_32 (input_bfd,
10022 B | ((delta - 8) & 0x3fffffc),
10023 contents + patch_off);
10024 patch_off += 4;
10025 }
10026 }
10027 else
10028 {
10029 bfd_put_32 (input_bfd, insn, contents + patch_off);
10030 patch_off += 4;
10031 bfd_put_32 (input_bfd,
10032 B | ((offset + 4 - patch_off) & 0x3fffffc),
10033 contents + patch_off);
10034 patch_off += 4;
10035 }
10036 BFD_ASSERT (patch_off <= input_section->size);
10037 relax_info->workaround_size = input_section->size - patch_off;
10038 }
10039 }
10040
252b5132
RH
10041 return ret;
10042}
252b5132 10043\f
25dbc73a
AM
10044/* Finish up dynamic symbol handling. We set the contents of various
10045 dynamic sections here. */
c5fccbec 10046
b34976b6 10047static bfd_boolean
25dbc73a
AM
10048ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
10049 struct bfd_link_info *info,
10050 struct elf_link_hash_entry *h,
10051 Elf_Internal_Sym *sym)
e1a9cb8e 10052{
25dbc73a 10053 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
10054 struct plt_entry *ent;
10055 bfd_boolean doneone;
e1a9cb8e 10056
25dbc73a
AM
10057#ifdef DEBUG
10058 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
10059 h->root.root.string);
10060#endif
e1a9cb8e 10061
25dbc73a
AM
10062 htab = ppc_elf_hash_table (info);
10063 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 10064
a6aa5195
AM
10065 doneone = FALSE;
10066 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10067 if (ent->plt.offset != (bfd_vma) -1)
10068 {
10069 if (!doneone)
10070 {
10071 Elf_Internal_Rela rela;
10072 bfd_byte *loc;
10073 bfd_vma reloc_index;
e1a9cb8e 10074
e054468f 10075 if (htab->plt_type == PLT_NEW
25f23106
AM
10076 || !htab->elf.dynamic_sections_created
10077 || h->dynindx == -1)
9d8504b1
PB
10078 reloc_index = ent->plt.offset / 4;
10079 else
10080 {
10081 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10082 / htab->plt_slot_size);
10083 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 10084 && htab->plt_type == PLT_OLD)
9d8504b1
PB
10085 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10086 }
10087
a6aa5195
AM
10088 /* This symbol has an entry in the procedure linkage table.
10089 Set it up. */
e054468f 10090 if (htab->plt_type == PLT_VXWORKS
25f23106
AM
10091 && htab->elf.dynamic_sections_created
10092 && h->dynindx != -1)
a6aa5195 10093 {
9d8504b1
PB
10094 bfd_vma got_offset;
10095 const bfd_vma *plt_entry;
5b914448 10096
9d8504b1
PB
10097 /* The first three entries in .got.plt are reserved. */
10098 got_offset = (reloc_index + 3) * 4;
10099
10100 /* Use the right PLT. */
0e1862bb 10101 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9d8504b1
PB
10102 : ppc_elf_vxworks_plt_entry;
10103
10104 /* Fill in the .plt on VxWorks. */
0e1862bb 10105 if (bfd_link_pic (info))
9d8504b1 10106 {
9d8504b1 10107 bfd_put_32 (output_bfd,
e87d4038 10108 plt_entry[0] | PPC_HA (got_offset),
ce558b89 10109 htab->elf.splt->contents + ent->plt.offset + 0);
9d8504b1 10110 bfd_put_32 (output_bfd,
e87d4038 10111 plt_entry[1] | PPC_LO (got_offset),
ce558b89 10112 htab->elf.splt->contents + ent->plt.offset + 4);
9d8504b1
PB
10113 }
10114 else
10115 {
e87d4038 10116 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
10117
10118 bfd_put_32 (output_bfd,
e87d4038 10119 plt_entry[0] | PPC_HA (got_loc),
ce558b89 10120 htab->elf.splt->contents + ent->plt.offset + 0);
9d8504b1 10121 bfd_put_32 (output_bfd,
e87d4038 10122 plt_entry[1] | PPC_LO (got_loc),
ce558b89 10123 htab->elf.splt->contents + ent->plt.offset + 4);
9d8504b1
PB
10124 }
10125
10126 bfd_put_32 (output_bfd, plt_entry[2],
ce558b89 10127 htab->elf.splt->contents + ent->plt.offset + 8);
9d8504b1 10128 bfd_put_32 (output_bfd, plt_entry[3],
ce558b89 10129 htab->elf.splt->contents + ent->plt.offset + 12);
9d8504b1
PB
10130
10131 /* This instruction is an immediate load. The value loaded is
10132 the byte offset of the R_PPC_JMP_SLOT relocation from the
10133 start of the .rela.plt section. The value is stored in the
10134 low-order 16 bits of the load instruction. */
10135 /* NOTE: It appears that this is now an index rather than a
10136 prescaled offset. */
5b914448 10137 bfd_put_32 (output_bfd,
9d8504b1 10138 plt_entry[4] | reloc_index,
ce558b89 10139 htab->elf.splt->contents + ent->plt.offset + 16);
9d8504b1
PB
10140 /* This instruction is a PC-relative branch whose target is
10141 the start of the PLT section. The address of this branch
10142 instruction is 20 bytes beyond the start of this PLT entry.
10143 The address is encoded in bits 6-29, inclusive. The value
10144 stored is right-shifted by two bits, permitting a 26-bit
10145 offset. */
5b914448
AM
10146 bfd_put_32 (output_bfd,
10147 (plt_entry[5]
9d8504b1 10148 | (-(ent->plt.offset + 20) & 0x03fffffc)),
ce558b89 10149 htab->elf.splt->contents + ent->plt.offset + 20);
9d8504b1 10150 bfd_put_32 (output_bfd, plt_entry[6],
ce558b89 10151 htab->elf.splt->contents + ent->plt.offset + 24);
9d8504b1 10152 bfd_put_32 (output_bfd, plt_entry[7],
ce558b89 10153 htab->elf.splt->contents + ent->plt.offset + 28);
9d8504b1
PB
10154
10155 /* Fill in the GOT entry corresponding to this PLT slot with
a8685210 10156 the address immediately after the "bctr" instruction
9d8504b1 10157 in this PLT entry. */
ce558b89
AM
10158 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10159 + htab->elf.splt->output_offset
9d8504b1 10160 + ent->plt.offset + 16),
ce558b89 10161 htab->elf.sgotplt->contents + got_offset);
9d8504b1 10162
0e1862bb 10163 if (!bfd_link_pic (info))
9d8504b1
PB
10164 {
10165 /* Fill in a couple of entries in .rela.plt.unloaded. */
10166 loc = htab->srelplt2->contents
10167 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10168 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10169 * sizeof (Elf32_External_Rela));
10170
10171 /* Provide the @ha relocation for the first instruction. */
ce558b89
AM
10172 rela.r_offset = (htab->elf.splt->output_section->vma
10173 + htab->elf.splt->output_offset
9d8504b1 10174 + ent->plt.offset + 2);
636ce3f5 10175 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
10176 R_PPC_ADDR16_HA);
10177 rela.r_addend = got_offset;
10178 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10179 loc += sizeof (Elf32_External_Rela);
10180
10181 /* Provide the @l relocation for the second instruction. */
ce558b89
AM
10182 rela.r_offset = (htab->elf.splt->output_section->vma
10183 + htab->elf.splt->output_offset
9d8504b1 10184 + ent->plt.offset + 6);
636ce3f5 10185 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
10186 R_PPC_ADDR16_LO);
10187 rela.r_addend = got_offset;
10188 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10189 loc += sizeof (Elf32_External_Rela);
10190
10191 /* Provide a relocation for the GOT entry corresponding to this
10192 PLT slot. Point it at the middle of the .plt entry. */
ce558b89
AM
10193 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10194 + htab->elf.sgotplt->output_offset
9d8504b1 10195 + got_offset);
7325306f 10196 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
10197 R_PPC_ADDR32);
10198 rela.r_addend = ent->plt.offset + 16;
10199 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10200 }
10201
10202 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10203 In particular, the offset for the relocation is not the
10204 address of the PLT entry for this function, as specified
10205 by the ABI. Instead, the offset is set to the address of
10206 the GOT slot for this function. See EABI 4.4.4.1. */
ce558b89
AM
10207 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10208 + htab->elf.sgotplt->output_offset
9d8504b1
PB
10209 + got_offset);
10210
a6aa5195
AM
10211 }
10212 else
10213 {
ce558b89 10214 asection *splt = htab->elf.splt;
25f23106
AM
10215 if (!htab->elf.dynamic_sections_created
10216 || h->dynindx == -1)
ce558b89 10217 splt = htab->elf.iplt;
e054468f
AM
10218
10219 rela.r_offset = (splt->output_section->vma
10220 + splt->output_offset
9d8504b1 10221 + ent->plt.offset);
e054468f 10222 if (htab->plt_type == PLT_OLD
25f23106
AM
10223 || !htab->elf.dynamic_sections_created
10224 || h->dynindx == -1)
9d8504b1
PB
10225 {
10226 /* We don't need to fill in the .plt. The ppc dynamic
10227 linker will fill it in. */
10228 }
10229 else
10230 {
10231 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10232 + htab->glink->output_section->vma
10233 + htab->glink->output_offset);
10234 bfd_put_32 (output_bfd, val,
e054468f 10235 splt->contents + ent->plt.offset);
9d8504b1 10236 }
a6aa5195 10237 }
e1a9cb8e 10238
a6aa5195 10239 /* Fill in the entry in the .rela.plt section. */
a6aa5195 10240 rela.r_addend = 0;
e054468f
AM
10241 if (!htab->elf.dynamic_sections_created
10242 || h->dynindx == -1)
10243 {
10244 BFD_ASSERT (h->type == STT_GNU_IFUNC
10245 && h->def_regular
10246 && (h->root.type == bfd_link_hash_defined
10247 || h->root.type == bfd_link_hash_defweak));
10248 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10249 rela.r_addend = SYM_VAL (h);
10250 }
10251 else
10252 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
e1a9cb8e 10253
25f23106
AM
10254 if (!htab->elf.dynamic_sections_created
10255 || h->dynindx == -1)
82e66161
AM
10256 {
10257 loc = (htab->elf.irelplt->contents
10258 + (htab->elf.irelplt->reloc_count++
10259 * sizeof (Elf32_External_Rela)));
10260 htab->local_ifunc_resolver = 1;
10261 }
e054468f 10262 else
82e66161
AM
10263 {
10264 loc = (htab->elf.srelplt->contents
10265 + reloc_index * sizeof (Elf32_External_Rela));
10266 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10267 htab->maybe_local_ifunc_resolver = 1;
10268 }
a6aa5195 10269 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 10270
a6aa5195
AM
10271 if (!h->def_regular)
10272 {
0eb4a168
AM
10273 /* Mark the symbol as undefined, rather than as
10274 defined in the .plt section. Leave the value if
10275 there were any relocations where pointer equality
10276 matters (this is a clue for the dynamic linker, to
10277 make function pointer comparisons work between an
10278 application and shared library), otherwise set it
10279 to zero. */
a6aa5195 10280 sym->st_shndx = SHN_UNDEF;
0eb4a168 10281 if (!h->pointer_equality_needed)
a6aa5195 10282 sym->st_value = 0;
0eb4a168
AM
10283 else if (!h->ref_regular_nonweak)
10284 {
625af618
AM
10285 /* This breaks function pointer comparisons, but
10286 that is better than breaking tests for a NULL
0eb4a168 10287 function pointer. */
0eb4a168
AM
10288 sym->st_value = 0;
10289 }
a6aa5195 10290 }
de972ffa 10291 else if (h->type == STT_GNU_IFUNC
0e1862bb 10292 && !bfd_link_pic (info))
de972ffa
AM
10293 {
10294 /* Set the value of ifunc symbols in a non-pie
10295 executable to the glink entry. This is to avoid
10296 text relocations. We can't do this for ifunc in
10297 allocate_dynrelocs, as we do for normal dynamic
10298 function symbols with plt entries, because we need
10299 to keep the original value around for the ifunc
10300 relocation. */
10301 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10302 (output_bfd, htab->glink->output_section));
5b914448
AM
10303 sym->st_value = (ent->glink_offset
10304 + htab->glink->output_offset
de972ffa
AM
10305 + htab->glink->output_section->vma);
10306 }
a6aa5195
AM
10307 doneone = TRUE;
10308 }
e1a9cb8e 10309
e054468f 10310 if (htab->plt_type == PLT_NEW
25f23106
AM
10311 || !htab->elf.dynamic_sections_created
10312 || h->dynindx == -1)
a6aa5195 10313 {
a7f2871e 10314 unsigned char *p;
ce558b89 10315 asection *splt = htab->elf.splt;
25f23106
AM
10316 if (!htab->elf.dynamic_sections_created
10317 || h->dynindx == -1)
ce558b89 10318 splt = htab->elf.iplt;
e1a9cb8e 10319
a7f2871e
AM
10320 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10321
5446cbdf 10322 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
a7f2871e
AM
10323 {
10324 bfd_put_32 (output_bfd, LWZ_11_3, p);
10325 p += 4;
10326 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10327 p += 4;
10328 bfd_put_32 (output_bfd, MR_0_3, p);
10329 p += 4;
10330 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10331 p += 4;
10332 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10333 p += 4;
10334 bfd_put_32 (output_bfd, BEQLR, p);
10335 p += 4;
10336 bfd_put_32 (output_bfd, MR_3_0, p);
10337 p += 4;
10338 bfd_put_32 (output_bfd, NOP, p);
10339 p += 4;
10340 }
10341
10342 write_glink_stub (ent, splt, p, info);
e1a9cb8e 10343
0e1862bb 10344 if (!bfd_link_pic (info))
e054468f
AM
10345 /* We only need one non-PIC glink stub. */
10346 break;
a6aa5195
AM
10347 }
10348 else
10349 break;
10350 }
e1a9cb8e 10351
25dbc73a
AM
10352 if (h->needs_copy)
10353 {
10354 asection *s;
10355 Elf_Internal_Rela rela;
10356 bfd_byte *loc;
e1a9cb8e 10357
25dbc73a 10358 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 10359
25dbc73a
AM
10360#ifdef DEBUG
10361 fprintf (stderr, ", copy");
10362#endif
e1a9cb8e 10363
25dbc73a 10364 BFD_ASSERT (h->dynindx != -1);
86bbe32f 10365
4dc4a9a5 10366 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a 10367 s = htab->relsbss;
afbf7e8e 10368 else if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f 10369 s = htab->elf.sreldynrelro;
25dbc73a 10370 else
9d19e4fd 10371 s = htab->elf.srelbss;
25dbc73a 10372 BFD_ASSERT (s != NULL);
e1a9cb8e 10373
e87d4038 10374 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
10375 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10376 rela.r_addend = 0;
10377 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10378 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10379 }
e1a9cb8e 10380
25dbc73a
AM
10381#ifdef DEBUG
10382 fprintf (stderr, "\n");
10383#endif
e1a9cb8e 10384
25dbc73a
AM
10385 return TRUE;
10386}
10387\f
10388static enum elf_reloc_type_class
7e612e98
AM
10389ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10390 const asection *rel_sec,
10391 const Elf_Internal_Rela *rela)
e1a9cb8e 10392{
7e612e98
AM
10393 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10394
ce558b89 10395 if (rel_sec == htab->elf.irelplt)
7e612e98
AM
10396 return reloc_class_ifunc;
10397
25dbc73a
AM
10398 switch (ELF32_R_TYPE (rela->r_info))
10399 {
10400 case R_PPC_RELATIVE:
10401 return reloc_class_relative;
25dbc73a
AM
10402 case R_PPC_JMP_SLOT:
10403 return reloc_class_plt;
10404 case R_PPC_COPY:
10405 return reloc_class_copy;
10406 default:
10407 return reloc_class_normal;
10408 }
e1a9cb8e 10409}
25dbc73a
AM
10410\f
10411/* Finish up the dynamic sections. */
e1a9cb8e 10412
25dbc73a
AM
10413static bfd_boolean
10414ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10415 struct bfd_link_info *info)
e1a9cb8e 10416{
25dbc73a
AM
10417 asection *sdyn;
10418 struct ppc_elf_link_hash_table *htab;
1fe44d79 10419 bfd_vma got;
e87d4038
AM
10420 bfd *dynobj;
10421 bfd_boolean ret = TRUE;
e1a9cb8e 10422
25dbc73a
AM
10423#ifdef DEBUG
10424 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10425#endif
6b0817e5 10426
25dbc73a 10427 htab = ppc_elf_hash_table (info);
ce558b89 10428 dynobj = htab->elf.dynobj;
3d4d4302 10429 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
e1a9cb8e 10430
1fe44d79
AM
10431 got = 0;
10432 if (htab->elf.hgot != NULL)
e87d4038 10433 got = SYM_VAL (htab->elf.hgot);
1fe44d79 10434
25dbc73a 10435 if (htab->elf.dynamic_sections_created)
e1a9cb8e 10436 {
25dbc73a 10437 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 10438
ce558b89 10439 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
86bbe32f 10440
25dbc73a
AM
10441 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10442 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10443 for (; dyncon < dynconend; dyncon++)
10444 {
10445 Elf_Internal_Dyn dyn;
10446 asection *s;
e1a9cb8e 10447
9d8504b1 10448 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 10449
25dbc73a
AM
10450 switch (dyn.d_tag)
10451 {
10452 case DT_PLTGOT:
9d8504b1 10453 if (htab->is_vxworks)
ce558b89 10454 s = htab->elf.sgotplt;
9d8504b1 10455 else
ce558b89 10456 s = htab->elf.splt;
25dbc73a
AM
10457 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10458 break;
86bbe32f 10459
25dbc73a 10460 case DT_PLTRELSZ:
ce558b89 10461 dyn.d_un.d_val = htab->elf.srelplt->size;
25dbc73a 10462 break;
e1a9cb8e 10463
25dbc73a 10464 case DT_JMPREL:
ce558b89 10465 s = htab->elf.srelplt;
25dbc73a
AM
10466 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10467 break;
2f89ff8d 10468
1fe44d79
AM
10469 case DT_PPC_GOT:
10470 dyn.d_un.d_ptr = got;
d7128ce4
AM
10471 break;
10472
82e66161
AM
10473 case DT_TEXTREL:
10474 if (htab->local_ifunc_resolver)
10475 info->callbacks->einfo
10476 (_("%X%P: text relocations and GNU indirect "
10477 "functions will result in a segfault at runtime\n"));
10478 else if (htab->maybe_local_ifunc_resolver)
10479 info->callbacks->einfo
10480 (_("%P: warning: text relocations and GNU indirect "
10481 "functions may result in a segfault at runtime\n"));
10482 continue;
10483
25dbc73a 10484 default:
7a2b07ff
NS
10485 if (htab->is_vxworks
10486 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10487 break;
25dbc73a
AM
10488 continue;
10489 }
4c45e5c9 10490
25dbc73a
AM
10491 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10492 }
10493 }
4c45e5c9 10494
6528b6eb
AM
10495 if (htab->elf.sgot != NULL
10496 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
25dbc73a 10497 {
ce558b89
AM
10498 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10499 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
e87d4038 10500 {
e79f5955 10501 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 10502
e87d4038
AM
10503 p += htab->elf.hgot->root.u.def.value;
10504 if (htab->plt_type == PLT_OLD)
e79f5955
AM
10505 {
10506 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10507 so that a function can easily find the address of
10508 _GLOBAL_OFFSET_TABLE_. */
10509 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10510 < htab->elf.hgot->root.u.def.section->size);
10511 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10512 }
3b36f7e6 10513
e87d4038 10514 if (sdyn != NULL)
e79f5955
AM
10515 {
10516 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10517 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10518 < htab->elf.hgot->root.u.def.section->size);
10519 bfd_put_32 (output_bfd, val, p);
10520 }
e87d4038
AM
10521 }
10522 else
10523 {
695344c0 10524 /* xgettext:c-format */
8de848d8 10525 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
25f53a85 10526 htab->elf.hgot->root.root.string,
ce558b89
AM
10527 (htab->elf.sgotplt != NULL
10528 ? htab->elf.sgotplt->name
10529 : htab->elf.sgot->name));
e87d4038
AM
10530 bfd_set_error (bfd_error_bad_value);
10531 ret = FALSE;
10532 }
25dbc73a 10533
ce558b89 10534 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
25dbc73a
AM
10535 }
10536
9d8504b1 10537 /* Fill in the first entry in the VxWorks procedure linkage table. */
6528b6eb
AM
10538 if (htab->is_vxworks
10539 && htab->elf.splt != NULL
10540 && htab->elf.splt->size != 0
10541 && htab->elf.splt->output_section != bfd_abs_section_ptr)
9d8504b1 10542 {
6528b6eb 10543 asection *splt = htab->elf.splt;
9d8504b1 10544 /* Use the right PLT. */
0e1862bb 10545 const bfd_vma *plt_entry = (bfd_link_pic (info)
5b914448
AM
10546 ? ppc_elf_vxworks_pic_plt0_entry
10547 : ppc_elf_vxworks_plt0_entry);
9d8504b1 10548
0e1862bb 10549 if (!bfd_link_pic (info))
9d8504b1 10550 {
e87d4038 10551 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 10552
e87d4038 10553 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 10554 splt->contents + 0);
e87d4038 10555 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
10556 splt->contents + 4);
10557 }
10558 else
10559 {
10560 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10561 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10562 }
10563 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10564 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10565 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10566 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10567 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10568 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10569
0e1862bb 10570 if (! bfd_link_pic (info))
9d8504b1
PB
10571 {
10572 Elf_Internal_Rela rela;
10573 bfd_byte *loc;
10574
10575 loc = htab->srelplt2->contents;
10576
10577 /* Output the @ha relocation for the first instruction. */
ce558b89
AM
10578 rela.r_offset = (htab->elf.splt->output_section->vma
10579 + htab->elf.splt->output_offset
9d8504b1 10580 + 2);
636ce3f5 10581 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10582 rela.r_addend = 0;
10583 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10584 loc += sizeof (Elf32_External_Rela);
5b914448 10585
9d8504b1 10586 /* Output the @l relocation for the second instruction. */
ce558b89
AM
10587 rela.r_offset = (htab->elf.splt->output_section->vma
10588 + htab->elf.splt->output_offset
9d8504b1 10589 + 6);
636ce3f5 10590 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10591 rela.r_addend = 0;
10592 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10593 loc += sizeof (Elf32_External_Rela);
10594
10595 /* Fix up the remaining relocations. They may have the wrong
10596 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10597 in which symbols were output. */
10598 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10599 {
10600 Elf_Internal_Rela rel;
10601
10602 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10603 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10604 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10605 loc += sizeof (Elf32_External_Rela);
10606
10607 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10608 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10609 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10610 loc += sizeof (Elf32_External_Rela);
10611
10612 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 10613 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
10614 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10615 loc += sizeof (Elf32_External_Rela);
10616 }
10617 }
10618 }
10619
e054468f
AM
10620 if (htab->glink != NULL
10621 && htab->glink->contents != NULL
10622 && htab->elf.dynamic_sections_created)
d7128ce4
AM
10623 {
10624 unsigned char *p;
10625 unsigned char *endp;
a6aa5195 10626 bfd_vma res0;
d7128ce4 10627 unsigned int i;
a6aa5195
AM
10628
10629 /*
10630 * PIC glink code is the following:
10631 *
10632 * # ith PLT code stub.
10633 * addis 11,30,(plt+(i-1)*4-got)@ha
10634 * lwz 11,(plt+(i-1)*4-got)@l(11)
10635 * mtctr 11
10636 * bctr
10637 *
10638 * # A table of branches, one for each plt entry.
176a0d42 10639 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
10640 * # addresses, so (r11 - res_0) gives the plt index * 4.
10641 * res_0: b PLTresolve
10642 * res_1: b PLTresolve
10643 * .
10644 * # Some number of entries towards the end can be nops
10645 * res_n_m3: nop
10646 * res_n_m2: nop
10647 * res_n_m1:
10648 *
10649 * PLTresolve:
10650 * addis 11,11,(1f-res_0)@ha
10651 * mflr 0
10652 * bcl 20,31,1f
10653 * 1: addi 11,11,(1b-res_0)@l
10654 * mflr 12
10655 * mtlr 0
10656 * sub 11,11,12 # r11 = index * 4
10657 * addis 12,12,(got+4-1b)@ha
10658 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10659 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10660 * mtctr 0
10661 * add 0,11,11
10662 * add 11,0,11 # r11 = index * 12 = reloc offset.
10663 * bctr
10664 */
10665 static const unsigned int pic_plt_resolve[] =
10666 {
10667 ADDIS_11_11,
10668 MFLR_0,
10669 BCL_20_31,
10670 ADDI_11_11,
10671 MFLR_12,
10672 MTLR_0,
10673 SUB_11_11_12,
10674 ADDIS_12_12,
10675 LWZ_0_12,
10676 LWZ_12_12,
10677 MTCTR_0,
10678 ADD_0_11_11,
10679 ADD_11_0_11,
10680 BCTR,
10681 NOP,
10682 NOP
10683 };
10684
176a0d42
AM
10685 /*
10686 * Non-PIC glink code is a little simpler.
10687 *
10688 * # ith PLT code stub.
10689 * lis 11,(plt+(i-1)*4)@ha
10690 * lwz 11,(plt+(i-1)*4)@l(11)
10691 * mtctr 11
10692 * bctr
10693 *
10694 * The branch table is the same, then comes
10695 *
10696 * PLTresolve:
10697 * lis 12,(got+4)@ha
10698 * addis 11,11,(-res_0)@ha
10699 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10700 * addi 11,11,(-res_0)@l # r11 = index * 4
10701 * mtctr 0
10702 * add 0,11,11
10703 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10704 * add 11,0,11 # r11 = index * 12 = reloc offset.
10705 * bctr
10706 */
d7128ce4
AM
10707 static const unsigned int plt_resolve[] =
10708 {
a6aa5195
AM
10709 LIS_12,
10710 ADDIS_11_11,
10711 LWZ_0_12,
10712 ADDI_11_11,
d7128ce4 10713 MTCTR_0,
7e8aeb9a 10714 ADD_0_11_11,
a6aa5195 10715 LWZ_12_12,
7e8aeb9a 10716 ADD_11_0_11,
d7128ce4
AM
10717 BCTR,
10718 NOP,
10719 NOP,
a6aa5195
AM
10720 NOP,
10721 NOP,
10722 NOP,
10723 NOP,
d7128ce4
AM
10724 NOP
10725 };
10726
a6aa5195
AM
10727 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10728 abort ();
10729 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
10730 abort ();
10731
a6aa5195 10732 /* Build the branch table, one for each plt entry (less one),
86b9da88 10733 and perhaps some padding. */
a6aa5195
AM
10734 p = htab->glink->contents;
10735 p += htab->glink_pltresolve;
86b9da88
AM
10736 endp = htab->glink->contents;
10737 endp += htab->glink->size - GLINK_PLTRESOLVE;
da3a2088 10738 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
86b9da88
AM
10739 {
10740 bfd_put_32 (output_bfd, B + endp - p, p);
10741 p += 4;
10742 }
10743 while (p < endp)
10744 {
10745 bfd_put_32 (output_bfd, NOP, p);
10746 p += 4;
10747 }
10748
7e8aeb9a 10749 res0 = (htab->glink_pltresolve
86b9da88
AM
10750 + htab->glink->output_section->vma
10751 + htab->glink->output_offset);
10752
da3a2088
AM
10753 if (htab->params->ppc476_workaround)
10754 {
10755 /* Ensure that a call stub at the end of a page doesn't
10756 result in prefetch over the end of the page into the
10757 glink branch table. */
10758 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10759 bfd_vma page_addr;
10760 bfd_vma glink_start = (htab->glink->output_section->vma
10761 + htab->glink->output_offset);
10762
10763 for (page_addr = res0 & -pagesize;
10764 page_addr > glink_start;
10765 page_addr -= pagesize)
10766 {
10767 /* We have a plt call stub that may need fixing. */
10768 bfd_byte *loc;
10769 unsigned int insn;
10770
10771 loc = htab->glink->contents + page_addr - 4 - glink_start;
10772 insn = bfd_get_32 (output_bfd, loc);
10773 if (insn == BCTR)
10774 {
10775 /* By alignment, we know that there must be at least
10776 one other call stub before this one. */
10777 insn = bfd_get_32 (output_bfd, loc - 16);
10778 if (insn == BCTR)
10779 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10780 else
10781 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10782 }
10783 }
10784 }
10785
86b9da88 10786 /* Last comes the PLTresolve stub. */
0e1862bb 10787 if (bfd_link_pic (info))
7e8aeb9a 10788 {
a6aa5195 10789 bfd_vma bcl;
d7128ce4 10790
a6aa5195 10791 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 10792 {
da3a2088
AM
10793 unsigned int insn = pic_plt_resolve[i];
10794
10795 if (htab->params->ppc476_workaround && insn == NOP)
10796 insn = BA + 0;
10797 bfd_put_32 (output_bfd, insn, p);
7e8aeb9a
AM
10798 p += 4;
10799 }
a6aa5195
AM
10800 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10801
10802 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10803 + htab->glink->output_section->vma
10804 + htab->glink->output_offset);
10805
10806 bfd_put_32 (output_bfd,
10807 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10808 bfd_put_32 (output_bfd,
10809 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10810 bfd_put_32 (output_bfd,
10811 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10812 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10813 {
10814 bfd_put_32 (output_bfd,
10815 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10816 bfd_put_32 (output_bfd,
10817 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10818 }
10819 else
10820 {
10821 bfd_put_32 (output_bfd,
10822 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10823 bfd_put_32 (output_bfd,
10824 LWZ_12_12 + 4, p + 9*4);
10825 }
7e8aeb9a
AM
10826 }
10827 else
d7128ce4 10828 {
a6aa5195 10829 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a 10830 {
da3a2088
AM
10831 unsigned int insn = plt_resolve[i];
10832
10833 if (htab->params->ppc476_workaround && insn == NOP)
10834 insn = BA + 0;
10835 bfd_put_32 (output_bfd, insn, p);
7e8aeb9a
AM
10836 p += 4;
10837 }
a6aa5195
AM
10838 p -= 4 * ARRAY_SIZE (plt_resolve);
10839
10840 bfd_put_32 (output_bfd,
10841 LIS_12 + PPC_HA (got + 4), p + 0*4);
10842 bfd_put_32 (output_bfd,
10843 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10844 bfd_put_32 (output_bfd,
10845 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10846 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10847 {
10848 bfd_put_32 (output_bfd,
10849 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10850 bfd_put_32 (output_bfd,
10851 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10852 }
10853 else
10854 {
10855 bfd_put_32 (output_bfd,
10856 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10857 bfd_put_32 (output_bfd,
10858 LWZ_12_12 + 4, p + 6*4);
10859 }
d7128ce4 10860 }
d7128ce4
AM
10861 }
10862
6177242a
AM
10863 if (htab->glink_eh_frame != NULL
10864 && htab->glink_eh_frame->contents != NULL)
10865 {
10866 unsigned char *p = htab->glink_eh_frame->contents;
10867 bfd_vma val;
10868
6177242a
AM
10869 p += sizeof (glink_eh_frame_cie);
10870 /* FDE length. */
6177242a
AM
10871 p += 4;
10872 /* CIE pointer. */
6177242a
AM
10873 p += 4;
10874 /* Offset to .glink. */
10875 val = (htab->glink->output_section->vma
10876 + htab->glink->output_offset);
10877 val -= (htab->glink_eh_frame->output_section->vma
10878 + htab->glink_eh_frame->output_offset);
10879 val -= p - htab->glink_eh_frame->contents;
10880 bfd_put_32 (htab->elf.dynobj, val, p);
6177242a 10881
dbaa2011 10882 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
6177242a
AM
10883 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10884 htab->glink_eh_frame,
10885 htab->glink_eh_frame->contents))
10886 return FALSE;
10887 }
10888
e87d4038 10889 return ret;
25dbc73a 10890}
e1a9cb8e 10891\f
6d00b590 10892#define TARGET_LITTLE_SYM powerpc_elf32_le_vec
252b5132 10893#define TARGET_LITTLE_NAME "elf32-powerpcle"
6d00b590 10894#define TARGET_BIG_SYM powerpc_elf32_vec
252b5132
RH
10895#define TARGET_BIG_NAME "elf32-powerpc"
10896#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 10897#define ELF_TARGET_ID PPC32_ELF_DATA
252b5132 10898#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
10899#ifdef __QNXTARGET__
10900#define ELF_MAXPAGESIZE 0x1000
04c6a44c 10901#define ELF_COMMONPAGESIZE 0x1000
d0facd1b 10902#else
252b5132 10903#define ELF_MAXPAGESIZE 0x10000
04c6a44c 10904#define ELF_COMMONPAGESIZE 0x10000
d0facd1b 10905#endif
b1342370 10906#define ELF_MINPAGESIZE 0x1000
252b5132
RH
10907#define elf_info_to_howto ppc_elf_info_to_howto
10908
10909#ifdef EM_CYGNUS_POWERPC
10910#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10911#endif
10912
10913#ifdef EM_PPC_OLD
10914#define ELF_MACHINE_ALT2 EM_PPC_OLD
10915#endif
10916
10917#define elf_backend_plt_not_loaded 1
5474d94f 10918#define elf_backend_want_dynrelro 1
252b5132 10919#define elf_backend_can_gc_sections 1
51b64d56 10920#define elf_backend_can_refcount 1
b491616a 10921#define elf_backend_rela_normal 1
53291d1f 10922#define elf_backend_caches_rawsize 1
252b5132 10923
43c40ab2 10924#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 10925#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 10926#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 10927#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
b9c361e0 10928#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 10929#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 10930#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 10931#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 10932
feee612b 10933#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
10934#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10935#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10936#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10937#define elf_backend_relocate_section ppc_elf_relocate_section
10938#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10939#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 10940#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
10941#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10942#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10943#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 10944#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
10945#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10946#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10947#define elf_backend_fake_sections ppc_elf_fake_sections
10948#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
954b63d4 10949#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
c5fccbec
DJ
10950#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10951#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 10952#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 10953#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
10954#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10955#define elf_backend_final_write_processing ppc_elf_final_write_processing
10956#define elf_backend_write_section ppc_elf_write_section
551b43fd 10957#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 10958#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 10959#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 10960#define elf_backend_init_index_section _bfd_elf_init_1_index_section
b9c361e0 10961#define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
252b5132
RH
10962
10963#include "elf32-target.h"
9d8504b1 10964
7b8e7dad
AM
10965/* FreeBSD Target */
10966
10967#undef TARGET_LITTLE_SYM
10968#undef TARGET_LITTLE_NAME
10969
10970#undef TARGET_BIG_SYM
6d00b590 10971#define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
7b8e7dad
AM
10972#undef TARGET_BIG_NAME
10973#define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10974
10975#undef ELF_OSABI
10976#define ELF_OSABI ELFOSABI_FREEBSD
10977
10978#undef elf32_bed
10979#define elf32_bed elf32_powerpc_fbsd_bed
10980
10981#include "elf32-target.h"
10982
9d8504b1
PB
10983/* VxWorks Target */
10984
10985#undef TARGET_LITTLE_SYM
10986#undef TARGET_LITTLE_NAME
10987
10988#undef TARGET_BIG_SYM
6d00b590 10989#define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
9d8504b1
PB
10990#undef TARGET_BIG_NAME
10991#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10992
7b8e7dad
AM
10993#undef ELF_OSABI
10994
d5e3d971
PB
10995/* VxWorks uses the elf default section flags for .plt. */
10996static const struct bfd_elf_special_section *
4aef7643 10997ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
9d8504b1 10998{
d5e3d971
PB
10999 if (sec->name == NULL)
11000 return NULL;
11001
11002 if (strcmp (sec->name, ".plt") == 0)
11003 return _bfd_elf_get_sec_type_attr (abfd, sec);
11004
11005 return ppc_elf_get_sec_type_attr (abfd, sec);
11006}
9d8504b1
PB
11007
11008/* Like ppc_elf_link_hash_table_create, but overrides
11009 appropriately for VxWorks. */
11010static struct bfd_link_hash_table *
11011ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
11012{
11013 struct bfd_link_hash_table *ret;
11014
11015 ret = ppc_elf_link_hash_table_create (abfd);
11016 if (ret)
11017 {
11018 struct ppc_elf_link_hash_table *htab
954b63d4 11019 = (struct ppc_elf_link_hash_table *)ret;
9d8504b1 11020 htab->is_vxworks = 1;
4a3dc543 11021 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
11022 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
11023 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
11024 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
11025 }
11026 return ret;
11027}
11028
11029/* Tweak magic VxWorks symbols as they are loaded. */
11030static bfd_boolean
11031ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
11032 struct bfd_link_info *info,
11033 Elf_Internal_Sym *sym,
4aef7643
AM
11034 const char **namep,
11035 flagword *flagsp,
9d8504b1
PB
11036 asection **secp,
11037 bfd_vma *valp)
11038{
4aef7643
AM
11039 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
11040 valp))
9d8504b1
PB
11041 return FALSE;
11042
4aef7643 11043 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
9d8504b1
PB
11044}
11045
9d8504b1
PB
11046static void
11047ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
11048{
4aef7643
AM
11049 ppc_elf_final_write_processing (abfd, linker);
11050 elf_vxworks_final_write_processing (abfd, linker);
9d8504b1
PB
11051}
11052
11053/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
11054 define it. */
11055#undef elf_backend_want_plt_sym
11056#define elf_backend_want_plt_sym 1
11057#undef elf_backend_want_got_plt
11058#define elf_backend_want_got_plt 1
11059#undef elf_backend_got_symbol_offset
11060#define elf_backend_got_symbol_offset 0
11061#undef elf_backend_plt_not_loaded
11062#define elf_backend_plt_not_loaded 0
11063#undef elf_backend_plt_readonly
11064#define elf_backend_plt_readonly 1
11065#undef elf_backend_got_header_size
11066#define elf_backend_got_header_size 12
64f52338
AM
11067#undef elf_backend_dtrel_excludes_plt
11068#define elf_backend_dtrel_excludes_plt 1
9d8504b1 11069
468392fb
AM
11070#undef bfd_elf32_get_synthetic_symtab
11071
9d8504b1
PB
11072#undef bfd_elf32_bfd_link_hash_table_create
11073#define bfd_elf32_bfd_link_hash_table_create \
11074 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
11075#undef elf_backend_add_symbol_hook
11076#define elf_backend_add_symbol_hook \
11077 ppc_elf_vxworks_add_symbol_hook
11078#undef elf_backend_link_output_symbol_hook
11079#define elf_backend_link_output_symbol_hook \
9c72ff84 11080 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
11081#undef elf_backend_final_write_processing
11082#define elf_backend_final_write_processing \
11083 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
11084#undef elf_backend_get_sec_type_attr
11085#define elf_backend_get_sec_type_attr \
11086 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
11087#undef elf_backend_emit_relocs
11088#define elf_backend_emit_relocs \
11089 elf_vxworks_emit_relocs
11090
11091#undef elf32_bed
11092#define elf32_bed ppc_elf_vxworks_bed
e054468f 11093#undef elf_backend_post_process_headers
9d8504b1
PB
11094
11095#include "elf32-target.h"