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[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
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252b5132 1/* PowerPC-specific support for 32-bit ELF
6f2750fe 2 Copyright (C) 1994-2016 Free Software Foundation, Inc.
252b5132
RH
3 Written by Ian Lance Taylor, Cygnus Support.
4
ae9a127f 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
ae9a127f
NC
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
ae9a127f 10 (at your option) any later version.
252b5132 11
ae9a127f
NC
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
252b5132 16
ae9a127f 17 You should have received a copy of the GNU General Public License
fc0bffd6 18 along with this program; if not, write to the
3e110533 19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
53e09e0a 20 Boston, MA 02110-1301, USA. */
252b5132 21
cd123cb7 22
252b5132
RH
23/* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
3db64b00 28#include "sysdep.h"
183e98be 29#include <stdarg.h>
252b5132 30#include "bfd.h"
252b5132
RH
31#include "bfdlink.h"
32#include "libbfd.h"
33#include "elf-bfd.h"
34#include "elf/ppc.h"
7619e7c7 35#include "elf32-ppc.h"
9d8504b1 36#include "elf-vxworks.h"
6177242a 37#include "dwarf2.h"
252b5132 38
b9c361e0
JL
39typedef enum split16_format_type
40{
41 split16a_type = 0,
42 split16d_type
43}
44split16_format_type;
45
f0fe0e16 46/* RELA relocations are used here. */
252b5132 47
252b5132 48static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 50static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 52
70bccea4
AM
53/* Branch prediction bit for branch taken relocs. */
54#define BRANCH_PREDICT_BIT 0x200000
55/* Mask to set RA in memory instructions. */
56#define RA_REGISTER_MASK 0x001f0000
57/* Value to shift register by to insert RA. */
58#define RA_REGISTER_SHIFT 16
252b5132
RH
59
60/* The name of the dynamic interpreter. This is put in the .interp
61 section. */
252b5132
RH
62#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
63
d7128ce4 64/* For old-style PLT. */
252b5132
RH
65/* The number of single-slot PLT entries (the rest use two slots). */
66#define PLT_NUM_SINGLE_ENTRIES 8192
67
d7128ce4 68/* For new-style .glink and .plt. */
a6aa5195 69#define GLINK_PLTRESOLVE 16*4
d7128ce4 70#define GLINK_ENTRY_SIZE 4*4
a7f2871e 71#define TLS_GET_ADDR_GLINK_SIZE 12*4
d7128ce4 72
9d8504b1
PB
73/* VxWorks uses its own plt layout, filled in by the static linker. */
74
75/* The standard VxWorks PLT entry. */
76#define VXWORKS_PLT_ENTRY_SIZE 32
77static const bfd_vma ppc_elf_vxworks_plt_entry
78 [VXWORKS_PLT_ENTRY_SIZE / 4] =
79 {
80 0x3d800000, /* lis r12,0 */
81 0x818c0000, /* lwz r12,0(r12) */
82 0x7d8903a6, /* mtctr r12 */
83 0x4e800420, /* bctr */
84 0x39600000, /* li r11,0 */
85 0x48000000, /* b 14 <.PLT0resolve+0x4> */
86 0x60000000, /* nop */
87 0x60000000, /* nop */
88 };
89static const bfd_vma ppc_elf_vxworks_pic_plt_entry
90 [VXWORKS_PLT_ENTRY_SIZE / 4] =
91 {
92 0x3d9e0000, /* addis r12,r30,0 */
93 0x818c0000, /* lwz r12,0(r12) */
94 0x7d8903a6, /* mtctr r12 */
95 0x4e800420, /* bctr */
96 0x39600000, /* li r11,0 */
97 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
98 0x60000000, /* nop */
99 0x60000000, /* nop */
100 };
101
102/* The initial VxWorks PLT entry. */
103#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
104static const bfd_vma ppc_elf_vxworks_plt0_entry
105 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
106 {
107 0x3d800000, /* lis r12,0 */
108 0x398c0000, /* addi r12,r12,0 */
109 0x800c0008, /* lwz r0,8(r12) */
110 0x7c0903a6, /* mtctr r0 */
111 0x818c0004, /* lwz r12,4(r12) */
112 0x4e800420, /* bctr */
113 0x60000000, /* nop */
114 0x60000000, /* nop */
115 };
116static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
117 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
118 {
119 0x819e0008, /* lwz r12,8(r30) */
120 0x7d8903a6, /* mtctr r12 */
121 0x819e0004, /* lwz r12,4(r30) */
122 0x4e800420, /* bctr */
123 0x60000000, /* nop */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 };
128
129/* For executables, we have some additional relocations in
130 .rela.plt.unloaded, for the kernel loader. */
131
132/* The number of non-JMP_SLOT relocations per PLT0 slot. */
133#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
134/* The number of relocations in the PLTResolve slot. */
135#define VXWORKS_PLTRESOLVE_RELOCS 2
136/* The number of relocations in the PLTResolve slot when when creating
137 a shared library. */
138#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
139
d7128ce4 140/* Some instructions. */
d7128ce4 141#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM
142#define ADDIS_11_30 0x3d7e0000
143#define ADDIS_12_12 0x3d8c0000
d7128ce4 144#define ADDI_11_11 0x396b0000
d7128ce4 145#define ADD_0_11_11 0x7c0b5a14
a7f2871e 146#define ADD_3_12_2 0x7c6c1214
d7128ce4 147#define ADD_11_0_11 0x7d605a14
a6aa5195 148#define B 0x48000000
da3a2088 149#define BA 0x48000002
a6aa5195 150#define BCL_20_31 0x429f0005
d7128ce4 151#define BCTR 0x4e800420
a7f2871e
AM
152#define BEQLR 0x4d820020
153#define CMPWI_11_0 0x2c0b0000
7e8aeb9a
AM
154#define LIS_11 0x3d600000
155#define LIS_12 0x3d800000
a6aa5195
AM
156#define LWZU_0_12 0x840c0000
157#define LWZ_0_12 0x800c0000
a7f2871e 158#define LWZ_11_3 0x81630000
a6aa5195
AM
159#define LWZ_11_11 0x816b0000
160#define LWZ_11_30 0x817e0000
a7f2871e 161#define LWZ_12_3 0x81830000
a6aa5195 162#define LWZ_12_12 0x818c0000
a7f2871e
AM
163#define MR_0_3 0x7c601b78
164#define MR_3_0 0x7c030378
a6aa5195
AM
165#define MFLR_0 0x7c0802a6
166#define MFLR_12 0x7d8802a6
167#define MTCTR_0 0x7c0903a6
168#define MTCTR_11 0x7d6903a6
169#define MTLR_0 0x7c0803a6
170#define NOP 0x60000000
171#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM
172
173/* Offset of tp and dtp pointers from start of TLS block. */
174#define TP_OFFSET 0x7000
175#define DTP_OFFSET 0x8000
e87d4038
AM
176
177/* The value of a defined global symbol. */
178#define SYM_VAL(SYM) \
179 ((SYM)->root.u.def.section->output_section->vma \
180 + (SYM)->root.u.def.section->output_offset \
181 + (SYM)->root.u.def.value)
7fce784e 182\f
e47cd125 183static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 184
8da6118f 185static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH
186 /* This reloc does nothing. */
187 HOWTO (R_PPC_NONE, /* type */
188 0, /* rightshift */
6346d5ca
AM
189 3, /* size (0 = byte, 1 = short, 2 = long) */
190 0, /* bitsize */
b34976b6 191 FALSE, /* pc_relative */
252b5132 192 0, /* bitpos */
86c95733 193 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
194 bfd_elf_generic_reloc, /* special_function */
195 "R_PPC_NONE", /* name */
b34976b6 196 FALSE, /* partial_inplace */
252b5132
RH
197 0, /* src_mask */
198 0, /* dst_mask */
b34976b6 199 FALSE), /* pcrel_offset */
252b5132
RH
200
201 /* A standard 32 bit relocation. */
202 HOWTO (R_PPC_ADDR32, /* type */
203 0, /* rightshift */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
205 32, /* bitsize */
b34976b6 206 FALSE, /* pc_relative */
252b5132 207 0, /* bitpos */
86c95733 208 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
209 bfd_elf_generic_reloc, /* special_function */
210 "R_PPC_ADDR32", /* name */
b34976b6 211 FALSE, /* partial_inplace */
252b5132
RH
212 0, /* src_mask */
213 0xffffffff, /* dst_mask */
b34976b6 214 FALSE), /* pcrel_offset */
252b5132
RH
215
216 /* An absolute 26 bit branch; the lower two bits must be zero.
217 FIXME: we don't check that, we just clear them. */
218 HOWTO (R_PPC_ADDR24, /* type */
219 0, /* rightshift */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
221 26, /* bitsize */
b34976b6 222 FALSE, /* pc_relative */
252b5132 223 0, /* bitpos */
86c95733 224 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
225 bfd_elf_generic_reloc, /* special_function */
226 "R_PPC_ADDR24", /* name */
b34976b6 227 FALSE, /* partial_inplace */
252b5132
RH
228 0, /* src_mask */
229 0x3fffffc, /* dst_mask */
b34976b6 230 FALSE), /* pcrel_offset */
252b5132
RH
231
232 /* A standard 16 bit relocation. */
233 HOWTO (R_PPC_ADDR16, /* type */
234 0, /* rightshift */
235 1, /* size (0 = byte, 1 = short, 2 = long) */
236 16, /* bitsize */
b34976b6 237 FALSE, /* pc_relative */
252b5132
RH
238 0, /* bitpos */
239 complain_overflow_bitfield, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_PPC_ADDR16", /* name */
b34976b6 242 FALSE, /* partial_inplace */
252b5132
RH
243 0, /* src_mask */
244 0xffff, /* dst_mask */
b34976b6 245 FALSE), /* pcrel_offset */
252b5132
RH
246
247 /* A 16 bit relocation without overflow. */
248 HOWTO (R_PPC_ADDR16_LO, /* type */
249 0, /* rightshift */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
251 16, /* bitsize */
b34976b6 252 FALSE, /* pc_relative */
252b5132
RH
253 0, /* bitpos */
254 complain_overflow_dont,/* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_PPC_ADDR16_LO", /* name */
b34976b6 257 FALSE, /* partial_inplace */
252b5132
RH
258 0, /* src_mask */
259 0xffff, /* dst_mask */
b34976b6 260 FALSE), /* pcrel_offset */
252b5132
RH
261
262 /* The high order 16 bits of an address. */
263 HOWTO (R_PPC_ADDR16_HI, /* type */
264 16, /* rightshift */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
266 16, /* bitsize */
b34976b6 267 FALSE, /* pc_relative */
252b5132
RH
268 0, /* bitpos */
269 complain_overflow_dont, /* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_PPC_ADDR16_HI", /* name */
b34976b6 272 FALSE, /* partial_inplace */
252b5132
RH
273 0, /* src_mask */
274 0xffff, /* dst_mask */
b34976b6 275 FALSE), /* pcrel_offset */
252b5132
RH
276
277 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 278 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH
279 HOWTO (R_PPC_ADDR16_HA, /* type */
280 16, /* rightshift */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
b34976b6 283 FALSE, /* pc_relative */
252b5132
RH
284 0, /* bitpos */
285 complain_overflow_dont, /* complain_on_overflow */
286 ppc_elf_addr16_ha_reloc, /* special_function */
287 "R_PPC_ADDR16_HA", /* name */
b34976b6 288 FALSE, /* partial_inplace */
252b5132
RH
289 0, /* src_mask */
290 0xffff, /* dst_mask */
b34976b6 291 FALSE), /* pcrel_offset */
252b5132
RH
292
293 /* An absolute 16 bit branch; the lower two bits must be zero.
294 FIXME: we don't check that, we just clear them. */
295 HOWTO (R_PPC_ADDR14, /* type */
296 0, /* rightshift */
297 2, /* size (0 = byte, 1 = short, 2 = long) */
298 16, /* bitsize */
b34976b6 299 FALSE, /* pc_relative */
252b5132 300 0, /* bitpos */
86c95733 301 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
302 bfd_elf_generic_reloc, /* special_function */
303 "R_PPC_ADDR14", /* name */
b34976b6 304 FALSE, /* partial_inplace */
252b5132
RH
305 0, /* src_mask */
306 0xfffc, /* dst_mask */
b34976b6 307 FALSE), /* pcrel_offset */
252b5132
RH
308
309 /* An absolute 16 bit branch, for which bit 10 should be set to
310 indicate that the branch is expected to be taken. The lower two
8da6118f 311 bits must be zero. */
252b5132
RH
312 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
313 0, /* rightshift */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
315 16, /* bitsize */
b34976b6 316 FALSE, /* pc_relative */
252b5132 317 0, /* bitpos */
86c95733 318 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
319 bfd_elf_generic_reloc, /* special_function */
320 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 321 FALSE, /* partial_inplace */
252b5132
RH
322 0, /* src_mask */
323 0xfffc, /* dst_mask */
b34976b6 324 FALSE), /* pcrel_offset */
252b5132
RH
325
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is not expected to be taken. The lower
328 two bits must be zero. */
329 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
330 0, /* rightshift */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
332 16, /* bitsize */
b34976b6 333 FALSE, /* pc_relative */
252b5132 334 0, /* bitpos */
86c95733 335 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
336 bfd_elf_generic_reloc, /* special_function */
337 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 338 FALSE, /* partial_inplace */
252b5132
RH
339 0, /* src_mask */
340 0xfffc, /* dst_mask */
b34976b6 341 FALSE), /* pcrel_offset */
252b5132 342
8da6118f 343 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH
344 HOWTO (R_PPC_REL24, /* type */
345 0, /* rightshift */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
347 26, /* bitsize */
b34976b6 348 TRUE, /* pc_relative */
252b5132
RH
349 0, /* bitpos */
350 complain_overflow_signed, /* complain_on_overflow */
351 bfd_elf_generic_reloc, /* special_function */
352 "R_PPC_REL24", /* name */
b34976b6 353 FALSE, /* partial_inplace */
252b5132
RH
354 0, /* src_mask */
355 0x3fffffc, /* dst_mask */
b34976b6 356 TRUE), /* pcrel_offset */
252b5132 357
8da6118f 358 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH
359 HOWTO (R_PPC_REL14, /* type */
360 0, /* rightshift */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
362 16, /* bitsize */
b34976b6 363 TRUE, /* pc_relative */
252b5132
RH
364 0, /* bitpos */
365 complain_overflow_signed, /* complain_on_overflow */
366 bfd_elf_generic_reloc, /* special_function */
367 "R_PPC_REL14", /* name */
b34976b6 368 FALSE, /* partial_inplace */
252b5132
RH
369 0, /* src_mask */
370 0xfffc, /* dst_mask */
b34976b6 371 TRUE), /* pcrel_offset */
252b5132 372
8da6118f 373 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
374 the branch is expected to be taken. The lower two bits must be
375 zero. */
376 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
377 0, /* rightshift */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
379 16, /* bitsize */
b34976b6 380 TRUE, /* pc_relative */
252b5132
RH
381 0, /* bitpos */
382 complain_overflow_signed, /* complain_on_overflow */
383 bfd_elf_generic_reloc, /* special_function */
384 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 385 FALSE, /* partial_inplace */
252b5132
RH
386 0, /* src_mask */
387 0xfffc, /* dst_mask */
b34976b6 388 TRUE), /* pcrel_offset */
252b5132 389
8da6118f 390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
391 the branch is not expected to be taken. The lower two bits must
392 be zero. */
393 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
394 0, /* rightshift */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
b34976b6 397 TRUE, /* pc_relative */
252b5132
RH
398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 402 FALSE, /* partial_inplace */
252b5132
RH
403 0, /* src_mask */
404 0xfffc, /* dst_mask */
b34976b6 405 TRUE), /* pcrel_offset */
252b5132
RH
406
407 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
408 symbol. */
409 HOWTO (R_PPC_GOT16, /* type */
410 0, /* rightshift */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
412 16, /* bitsize */
b34976b6 413 FALSE, /* pc_relative */
252b5132
RH
414 0, /* bitpos */
415 complain_overflow_signed, /* complain_on_overflow */
3ce51288 416 ppc_elf_unhandled_reloc, /* special_function */
252b5132 417 "R_PPC_GOT16", /* name */
b34976b6 418 FALSE, /* partial_inplace */
252b5132
RH
419 0, /* src_mask */
420 0xffff, /* dst_mask */
b34976b6 421 FALSE), /* pcrel_offset */
252b5132
RH
422
423 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
424 the symbol. */
425 HOWTO (R_PPC_GOT16_LO, /* type */
426 0, /* rightshift */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
428 16, /* bitsize */
b34976b6 429 FALSE, /* pc_relative */
252b5132
RH
430 0, /* bitpos */
431 complain_overflow_dont, /* complain_on_overflow */
3ce51288 432 ppc_elf_unhandled_reloc, /* special_function */
252b5132 433 "R_PPC_GOT16_LO", /* name */
b34976b6 434 FALSE, /* partial_inplace */
252b5132
RH
435 0, /* src_mask */
436 0xffff, /* dst_mask */
b34976b6 437 FALSE), /* pcrel_offset */
252b5132
RH
438
439 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
440 the symbol. */
441 HOWTO (R_PPC_GOT16_HI, /* type */
442 16, /* rightshift */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
444 16, /* bitsize */
b34976b6 445 FALSE, /* pc_relative */
252b5132 446 0, /* bitpos */
86c95733 447 complain_overflow_dont, /* complain_on_overflow */
3ce51288 448 ppc_elf_unhandled_reloc, /* special_function */
252b5132 449 "R_PPC_GOT16_HI", /* name */
b34976b6 450 FALSE, /* partial_inplace */
252b5132
RH
451 0, /* src_mask */
452 0xffff, /* dst_mask */
b34976b6 453 FALSE), /* pcrel_offset */
252b5132
RH
454
455 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
456 the symbol. */
457 HOWTO (R_PPC_GOT16_HA, /* type */
458 16, /* rightshift */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
b34976b6 461 FALSE, /* pc_relative */
252b5132 462 0, /* bitpos */
86c95733 463 complain_overflow_dont, /* complain_on_overflow */
3ce51288 464 ppc_elf_unhandled_reloc, /* special_function */
252b5132 465 "R_PPC_GOT16_HA", /* name */
b34976b6 466 FALSE, /* partial_inplace */
252b5132
RH
467 0, /* src_mask */
468 0xffff, /* dst_mask */
b34976b6 469 FALSE), /* pcrel_offset */
252b5132
RH
470
471 /* Like R_PPC_REL24, but referring to the procedure linkage table
472 entry for the symbol. */
473 HOWTO (R_PPC_PLTREL24, /* type */
474 0, /* rightshift */
475 2, /* size (0 = byte, 1 = short, 2 = long) */
476 26, /* bitsize */
b34976b6 477 TRUE, /* pc_relative */
252b5132 478 0, /* bitpos */
3ce51288
AM
479 complain_overflow_signed, /* complain_on_overflow */
480 ppc_elf_unhandled_reloc, /* special_function */
252b5132 481 "R_PPC_PLTREL24", /* name */
b34976b6 482 FALSE, /* partial_inplace */
252b5132
RH
483 0, /* src_mask */
484 0x3fffffc, /* dst_mask */
b34976b6 485 TRUE), /* pcrel_offset */
252b5132
RH
486
487 /* This is used only by the dynamic linker. The symbol should exist
488 both in the object being run and in some shared library. The
489 dynamic linker copies the data addressed by the symbol from the
490 shared library into the object, because the object being
491 run has to have the data at some particular address. */
492 HOWTO (R_PPC_COPY, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 32, /* bitsize */
b34976b6 496 FALSE, /* pc_relative */
252b5132 497 0, /* bitpos */
86c95733 498 complain_overflow_dont, /* complain_on_overflow */
3ce51288 499 ppc_elf_unhandled_reloc, /* special_function */
252b5132 500 "R_PPC_COPY", /* name */
b34976b6 501 FALSE, /* partial_inplace */
252b5132
RH
502 0, /* src_mask */
503 0, /* dst_mask */
b34976b6 504 FALSE), /* pcrel_offset */
252b5132
RH
505
506 /* Like R_PPC_ADDR32, but used when setting global offset table
507 entries. */
508 HOWTO (R_PPC_GLOB_DAT, /* type */
509 0, /* rightshift */
510 2, /* size (0 = byte, 1 = short, 2 = long) */
511 32, /* bitsize */
b34976b6 512 FALSE, /* pc_relative */
252b5132 513 0, /* bitpos */
86c95733 514 complain_overflow_dont, /* complain_on_overflow */
3ce51288 515 ppc_elf_unhandled_reloc, /* special_function */
252b5132 516 "R_PPC_GLOB_DAT", /* name */
b34976b6 517 FALSE, /* partial_inplace */
252b5132
RH
518 0, /* src_mask */
519 0xffffffff, /* dst_mask */
b34976b6 520 FALSE), /* pcrel_offset */
252b5132
RH
521
522 /* Marks a procedure linkage table entry for a symbol. */
523 HOWTO (R_PPC_JMP_SLOT, /* type */
524 0, /* rightshift */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
526 32, /* bitsize */
b34976b6 527 FALSE, /* pc_relative */
252b5132 528 0, /* bitpos */
86c95733 529 complain_overflow_dont, /* complain_on_overflow */
3ce51288 530 ppc_elf_unhandled_reloc, /* special_function */
252b5132 531 "R_PPC_JMP_SLOT", /* name */
b34976b6 532 FALSE, /* partial_inplace */
252b5132
RH
533 0, /* src_mask */
534 0, /* dst_mask */
b34976b6 535 FALSE), /* pcrel_offset */
252b5132
RH
536
537 /* Used only by the dynamic linker. When the object is run, this
538 longword is set to the load address of the object, plus the
539 addend. */
540 HOWTO (R_PPC_RELATIVE, /* type */
541 0, /* rightshift */
542 2, /* size (0 = byte, 1 = short, 2 = long) */
543 32, /* bitsize */
b34976b6 544 FALSE, /* pc_relative */
252b5132 545 0, /* bitpos */
86c95733 546 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
547 bfd_elf_generic_reloc, /* special_function */
548 "R_PPC_RELATIVE", /* name */
b34976b6 549 FALSE, /* partial_inplace */
252b5132
RH
550 0, /* src_mask */
551 0xffffffff, /* dst_mask */
b34976b6 552 FALSE), /* pcrel_offset */
252b5132
RH
553
554 /* Like R_PPC_REL24, but uses the value of the symbol within the
555 object rather than the final value. Normally used for
556 _GLOBAL_OFFSET_TABLE_. */
557 HOWTO (R_PPC_LOCAL24PC, /* type */
558 0, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 26, /* bitsize */
b34976b6 561 TRUE, /* pc_relative */
252b5132
RH
562 0, /* bitpos */
563 complain_overflow_signed, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC_LOCAL24PC", /* name */
b34976b6 566 FALSE, /* partial_inplace */
252b5132
RH
567 0, /* src_mask */
568 0x3fffffc, /* dst_mask */
b34976b6 569 TRUE), /* pcrel_offset */
252b5132
RH
570
571 /* Like R_PPC_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC_UADDR32, /* type */
573 0, /* rightshift */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
575 32, /* bitsize */
b34976b6 576 FALSE, /* pc_relative */
252b5132 577 0, /* bitpos */
86c95733 578 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC_UADDR32", /* name */
b34976b6 581 FALSE, /* partial_inplace */
252b5132
RH
582 0, /* src_mask */
583 0xffffffff, /* dst_mask */
b34976b6 584 FALSE), /* pcrel_offset */
252b5132
RH
585
586 /* Like R_PPC_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC_UADDR16, /* type */
588 0, /* rightshift */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
590 16, /* bitsize */
b34976b6 591 FALSE, /* pc_relative */
252b5132
RH
592 0, /* bitpos */
593 complain_overflow_bitfield, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC_UADDR16", /* name */
b34976b6 596 FALSE, /* partial_inplace */
252b5132
RH
597 0, /* src_mask */
598 0xffff, /* dst_mask */
b34976b6 599 FALSE), /* pcrel_offset */
252b5132
RH
600
601 /* 32-bit PC relative */
602 HOWTO (R_PPC_REL32, /* type */
603 0, /* rightshift */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
605 32, /* bitsize */
b34976b6 606 TRUE, /* pc_relative */
252b5132 607 0, /* bitpos */
86c95733 608 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_REL32", /* name */
b34976b6 611 FALSE, /* partial_inplace */
252b5132
RH
612 0, /* src_mask */
613 0xffffffff, /* dst_mask */
b34976b6 614 TRUE), /* pcrel_offset */
252b5132
RH
615
616 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 617 FIXME: not supported. */
252b5132
RH
618 HOWTO (R_PPC_PLT32, /* type */
619 0, /* rightshift */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
621 32, /* bitsize */
b34976b6 622 FALSE, /* pc_relative */
252b5132 623 0, /* bitpos */
86c95733 624 complain_overflow_dont, /* complain_on_overflow */
3ce51288 625 ppc_elf_unhandled_reloc, /* special_function */
252b5132 626 "R_PPC_PLT32", /* name */
b34976b6 627 FALSE, /* partial_inplace */
252b5132
RH
628 0, /* src_mask */
629 0, /* dst_mask */
b34976b6 630 FALSE), /* pcrel_offset */
252b5132
RH
631
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 633 FIXME: not supported. */
252b5132
RH
634 HOWTO (R_PPC_PLTREL32, /* type */
635 0, /* rightshift */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
637 32, /* bitsize */
b34976b6 638 TRUE, /* pc_relative */
252b5132 639 0, /* bitpos */
86c95733 640 complain_overflow_dont, /* complain_on_overflow */
3ce51288 641 ppc_elf_unhandled_reloc, /* special_function */
252b5132 642 "R_PPC_PLTREL32", /* name */
b34976b6 643 FALSE, /* partial_inplace */
252b5132
RH
644 0, /* src_mask */
645 0, /* dst_mask */
b34976b6 646 TRUE), /* pcrel_offset */
252b5132
RH
647
648 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
649 the symbol. */
650 HOWTO (R_PPC_PLT16_LO, /* type */
651 0, /* rightshift */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
653 16, /* bitsize */
b34976b6 654 FALSE, /* pc_relative */
252b5132
RH
655 0, /* bitpos */
656 complain_overflow_dont, /* complain_on_overflow */
3ce51288 657 ppc_elf_unhandled_reloc, /* special_function */
252b5132 658 "R_PPC_PLT16_LO", /* name */
b34976b6 659 FALSE, /* partial_inplace */
252b5132
RH
660 0, /* src_mask */
661 0xffff, /* dst_mask */
b34976b6 662 FALSE), /* pcrel_offset */
252b5132
RH
663
664 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
665 the symbol. */
666 HOWTO (R_PPC_PLT16_HI, /* type */
667 16, /* rightshift */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
669 16, /* bitsize */
b34976b6 670 FALSE, /* pc_relative */
252b5132 671 0, /* bitpos */
86c95733 672 complain_overflow_dont, /* complain_on_overflow */
3ce51288 673 ppc_elf_unhandled_reloc, /* special_function */
252b5132 674 "R_PPC_PLT16_HI", /* name */
b34976b6 675 FALSE, /* partial_inplace */
252b5132
RH
676 0, /* src_mask */
677 0xffff, /* dst_mask */
b34976b6 678 FALSE), /* pcrel_offset */
252b5132
RH
679
680 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
681 the symbol. */
682 HOWTO (R_PPC_PLT16_HA, /* type */
683 16, /* rightshift */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
b34976b6 686 FALSE, /* pc_relative */
252b5132 687 0, /* bitpos */
86c95733 688 complain_overflow_dont, /* complain_on_overflow */
3ce51288 689 ppc_elf_unhandled_reloc, /* special_function */
252b5132 690 "R_PPC_PLT16_HA", /* name */
b34976b6 691 FALSE, /* partial_inplace */
252b5132
RH
692 0, /* src_mask */
693 0xffff, /* dst_mask */
b34976b6 694 FALSE), /* pcrel_offset */
252b5132
RH
695
696 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
697 small data items. */
698 HOWTO (R_PPC_SDAREL16, /* type */
699 0, /* rightshift */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
701 16, /* bitsize */
b34976b6 702 FALSE, /* pc_relative */
252b5132
RH
703 0, /* bitpos */
704 complain_overflow_signed, /* complain_on_overflow */
3ce51288 705 ppc_elf_unhandled_reloc, /* special_function */
252b5132 706 "R_PPC_SDAREL16", /* name */
b34976b6 707 FALSE, /* partial_inplace */
252b5132
RH
708 0, /* src_mask */
709 0xffff, /* dst_mask */
b34976b6 710 FALSE), /* pcrel_offset */
252b5132 711
c061c2d8 712 /* 16-bit section relative relocation. */
252b5132
RH
713 HOWTO (R_PPC_SECTOFF, /* type */
714 0, /* rightshift */
c061c2d8
AM
715 1, /* size (0 = byte, 1 = short, 2 = long) */
716 16, /* bitsize */
b34976b6 717 FALSE, /* pc_relative */
252b5132 718 0, /* bitpos */
86c95733 719 complain_overflow_signed, /* complain_on_overflow */
3ce51288 720 ppc_elf_unhandled_reloc, /* special_function */
252b5132 721 "R_PPC_SECTOFF", /* name */
b34976b6 722 FALSE, /* partial_inplace */
252b5132 723 0, /* src_mask */
c061c2d8 724 0xffff, /* dst_mask */
b34976b6 725 FALSE), /* pcrel_offset */
252b5132 726
c3668558 727 /* 16-bit lower half section relative relocation. */
252b5132
RH
728 HOWTO (R_PPC_SECTOFF_LO, /* type */
729 0, /* rightshift */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
731 16, /* bitsize */
b34976b6 732 FALSE, /* pc_relative */
252b5132
RH
733 0, /* bitpos */
734 complain_overflow_dont, /* complain_on_overflow */
3ce51288 735 ppc_elf_unhandled_reloc, /* special_function */
252b5132 736 "R_PPC_SECTOFF_LO", /* name */
b34976b6 737 FALSE, /* partial_inplace */
252b5132
RH
738 0, /* src_mask */
739 0xffff, /* dst_mask */
b34976b6 740 FALSE), /* pcrel_offset */
252b5132 741
c3668558 742 /* 16-bit upper half section relative relocation. */
252b5132
RH
743 HOWTO (R_PPC_SECTOFF_HI, /* type */
744 16, /* rightshift */
745 1, /* size (0 = byte, 1 = short, 2 = long) */
746 16, /* bitsize */
b34976b6 747 FALSE, /* pc_relative */
252b5132 748 0, /* bitpos */
86c95733 749 complain_overflow_dont, /* complain_on_overflow */
3ce51288 750 ppc_elf_unhandled_reloc, /* special_function */
252b5132 751 "R_PPC_SECTOFF_HI", /* name */
b34976b6 752 FALSE, /* partial_inplace */
252b5132
RH
753 0, /* src_mask */
754 0xffff, /* dst_mask */
b34976b6 755 FALSE), /* pcrel_offset */
252b5132 756
c3668558 757 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH
758 HOWTO (R_PPC_SECTOFF_HA, /* type */
759 16, /* rightshift */
760 1, /* size (0 = byte, 1 = short, 2 = long) */
761 16, /* bitsize */
b34976b6 762 FALSE, /* pc_relative */
252b5132 763 0, /* bitpos */
86c95733 764 complain_overflow_dont, /* complain_on_overflow */
3ce51288 765 ppc_elf_unhandled_reloc, /* special_function */
252b5132 766 "R_PPC_SECTOFF_HA", /* name */
b34976b6 767 FALSE, /* partial_inplace */
252b5132
RH
768 0, /* src_mask */
769 0xffff, /* dst_mask */
b34976b6 770 FALSE), /* pcrel_offset */
252b5132 771
727fc41e 772 /* Marker relocs for TLS. */
7619e7c7 773 HOWTO (R_PPC_TLS,
252b5132
RH
774 0, /* rightshift */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
776 32, /* bitsize */
b34976b6 777 FALSE, /* pc_relative */
252b5132 778 0, /* bitpos */
7619e7c7 779 complain_overflow_dont, /* complain_on_overflow */
252b5132 780 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM
781 "R_PPC_TLS", /* name */
782 FALSE, /* partial_inplace */
783 0, /* src_mask */
784 0, /* dst_mask */
785 FALSE), /* pcrel_offset */
786
727fc41e
AM
787 HOWTO (R_PPC_TLSGD,
788 0, /* rightshift */
789 2, /* size (0 = byte, 1 = short, 2 = long) */
790 32, /* bitsize */
791 FALSE, /* pc_relative */
792 0, /* bitpos */
793 complain_overflow_dont, /* complain_on_overflow */
794 bfd_elf_generic_reloc, /* special_function */
795 "R_PPC_TLSGD", /* name */
796 FALSE, /* partial_inplace */
797 0, /* src_mask */
798 0, /* dst_mask */
799 FALSE), /* pcrel_offset */
800
801 HOWTO (R_PPC_TLSLD,
802 0, /* rightshift */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
804 32, /* bitsize */
805 FALSE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_dont, /* complain_on_overflow */
808 bfd_elf_generic_reloc, /* special_function */
809 "R_PPC_TLSLD", /* name */
810 FALSE, /* partial_inplace */
811 0, /* src_mask */
812 0, /* dst_mask */
813 FALSE), /* pcrel_offset */
814
7619e7c7
AM
815 /* Computes the load module index of the load module that contains the
816 definition of its TLS sym. */
817 HOWTO (R_PPC_DTPMOD32,
818 0, /* rightshift */
819 2, /* size (0 = byte, 1 = short, 2 = long) */
820 32, /* bitsize */
821 FALSE, /* pc_relative */
822 0, /* bitpos */
823 complain_overflow_dont, /* complain_on_overflow */
824 ppc_elf_unhandled_reloc, /* special_function */
825 "R_PPC_DTPMOD32", /* name */
b34976b6 826 FALSE, /* partial_inplace */
252b5132
RH
827 0, /* src_mask */
828 0xffffffff, /* dst_mask */
b34976b6 829 FALSE), /* pcrel_offset */
252b5132 830
7619e7c7
AM
831 /* Computes a dtv-relative displacement, the difference between the value
832 of sym+add and the base address of the thread-local storage block that
833 contains the definition of sym, minus 0x8000. */
834 HOWTO (R_PPC_DTPREL32,
835 0, /* rightshift */
836 2, /* size (0 = byte, 1 = short, 2 = long) */
837 32, /* bitsize */
838 FALSE, /* pc_relative */
839 0, /* bitpos */
840 complain_overflow_dont, /* complain_on_overflow */
841 ppc_elf_unhandled_reloc, /* special_function */
842 "R_PPC_DTPREL32", /* name */
843 FALSE, /* partial_inplace */
844 0, /* src_mask */
845 0xffffffff, /* dst_mask */
846 FALSE), /* pcrel_offset */
847
848 /* A 16 bit dtprel reloc. */
849 HOWTO (R_PPC_DTPREL16,
252b5132
RH
850 0, /* rightshift */
851 1, /* size (0 = byte, 1 = short, 2 = long) */
852 16, /* bitsize */
b34976b6 853 FALSE, /* pc_relative */
252b5132 854 0, /* bitpos */
7619e7c7
AM
855 complain_overflow_signed, /* complain_on_overflow */
856 ppc_elf_unhandled_reloc, /* special_function */
857 "R_PPC_DTPREL16", /* name */
b34976b6 858 FALSE, /* partial_inplace */
252b5132
RH
859 0, /* src_mask */
860 0xffff, /* dst_mask */
b34976b6 861 FALSE), /* pcrel_offset */
252b5132 862
7619e7c7
AM
863 /* Like DTPREL16, but no overflow. */
864 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH
865 0, /* rightshift */
866 1, /* size (0 = byte, 1 = short, 2 = long) */
867 16, /* bitsize */
b34976b6 868 FALSE, /* pc_relative */
252b5132 869 0, /* bitpos */
7619e7c7
AM
870 complain_overflow_dont, /* complain_on_overflow */
871 ppc_elf_unhandled_reloc, /* special_function */
872 "R_PPC_DTPREL16_LO", /* name */
b34976b6 873 FALSE, /* partial_inplace */
252b5132
RH
874 0, /* src_mask */
875 0xffff, /* dst_mask */
b34976b6 876 FALSE), /* pcrel_offset */
252b5132 877
7619e7c7
AM
878 /* Like DTPREL16_LO, but next higher group of 16 bits. */
879 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH
880 16, /* rightshift */
881 1, /* size (0 = byte, 1 = short, 2 = long) */
882 16, /* bitsize */
b34976b6 883 FALSE, /* pc_relative */
252b5132
RH
884 0, /* bitpos */
885 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
886 ppc_elf_unhandled_reloc, /* special_function */
887 "R_PPC_DTPREL16_HI", /* name */
b34976b6 888 FALSE, /* partial_inplace */
252b5132
RH
889 0, /* src_mask */
890 0xffff, /* dst_mask */
b34976b6 891 FALSE), /* pcrel_offset */
252b5132 892
7619e7c7
AM
893 /* Like DTPREL16_HI, but adjust for low 16 bits. */
894 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH
895 16, /* rightshift */
896 1, /* size (0 = byte, 1 = short, 2 = long) */
897 16, /* bitsize */
b34976b6 898 FALSE, /* pc_relative */
252b5132
RH
899 0, /* bitpos */
900 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
901 ppc_elf_unhandled_reloc, /* special_function */
902 "R_PPC_DTPREL16_HA", /* name */
b34976b6 903 FALSE, /* partial_inplace */
252b5132
RH
904 0, /* src_mask */
905 0xffff, /* dst_mask */
b34976b6 906 FALSE), /* pcrel_offset */
252b5132 907
7619e7c7
AM
908 /* Computes a tp-relative displacement, the difference between the value of
909 sym+add and the value of the thread pointer (r13). */
910 HOWTO (R_PPC_TPREL32,
911 0, /* rightshift */
912 2, /* size (0 = byte, 1 = short, 2 = long) */
913 32, /* bitsize */
914 FALSE, /* pc_relative */
915 0, /* bitpos */
916 complain_overflow_dont, /* complain_on_overflow */
917 ppc_elf_unhandled_reloc, /* special_function */
918 "R_PPC_TPREL32", /* name */
919 FALSE, /* partial_inplace */
920 0, /* src_mask */
921 0xffffffff, /* dst_mask */
922 FALSE), /* pcrel_offset */
923
924 /* A 16 bit tprel reloc. */
925 HOWTO (R_PPC_TPREL16,
252b5132
RH
926 0, /* rightshift */
927 1, /* size (0 = byte, 1 = short, 2 = long) */
928 16, /* bitsize */
b34976b6 929 FALSE, /* pc_relative */
252b5132 930 0, /* bitpos */
7619e7c7
AM
931 complain_overflow_signed, /* complain_on_overflow */
932 ppc_elf_unhandled_reloc, /* special_function */
933 "R_PPC_TPREL16", /* name */
b34976b6 934 FALSE, /* partial_inplace */
252b5132
RH
935 0, /* src_mask */
936 0xffff, /* dst_mask */
b34976b6 937 FALSE), /* pcrel_offset */
252b5132 938
7619e7c7
AM
939 /* Like TPREL16, but no overflow. */
940 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH
941 0, /* rightshift */
942 1, /* size (0 = byte, 1 = short, 2 = long) */
943 16, /* bitsize */
b34976b6 944 FALSE, /* pc_relative */
252b5132 945 0, /* bitpos */
7619e7c7
AM
946 complain_overflow_dont, /* complain_on_overflow */
947 ppc_elf_unhandled_reloc, /* special_function */
948 "R_PPC_TPREL16_LO", /* name */
b34976b6 949 FALSE, /* partial_inplace */
252b5132
RH
950 0, /* src_mask */
951 0xffff, /* dst_mask */
b34976b6 952 FALSE), /* pcrel_offset */
252b5132 953
7619e7c7
AM
954 /* Like TPREL16_LO, but next higher group of 16 bits. */
955 HOWTO (R_PPC_TPREL16_HI,
956 16, /* rightshift */
957 1, /* size (0 = byte, 1 = short, 2 = long) */
958 16, /* bitsize */
959 FALSE, /* pc_relative */
960 0, /* bitpos */
961 complain_overflow_dont, /* complain_on_overflow */
962 ppc_elf_unhandled_reloc, /* special_function */
963 "R_PPC_TPREL16_HI", /* name */
964 FALSE, /* partial_inplace */
965 0, /* src_mask */
966 0xffff, /* dst_mask */
967 FALSE), /* pcrel_offset */
968
969 /* Like TPREL16_HI, but adjust for low 16 bits. */
970 HOWTO (R_PPC_TPREL16_HA,
971 16, /* rightshift */
972 1, /* size (0 = byte, 1 = short, 2 = long) */
973 16, /* bitsize */
974 FALSE, /* pc_relative */
975 0, /* bitpos */
976 complain_overflow_dont, /* complain_on_overflow */
977 ppc_elf_unhandled_reloc, /* special_function */
978 "R_PPC_TPREL16_HA", /* name */
979 FALSE, /* partial_inplace */
980 0, /* src_mask */
981 0xffff, /* dst_mask */
982 FALSE), /* pcrel_offset */
983
984 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
985 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
986 to the first entry. */
987 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH
988 0, /* rightshift */
989 1, /* size (0 = byte, 1 = short, 2 = long) */
990 16, /* bitsize */
b34976b6 991 FALSE, /* pc_relative */
252b5132
RH
992 0, /* bitpos */
993 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
994 ppc_elf_unhandled_reloc, /* special_function */
995 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 996 FALSE, /* partial_inplace */
252b5132
RH
997 0, /* src_mask */
998 0xffff, /* dst_mask */
b34976b6 999 FALSE), /* pcrel_offset */
252b5132 1000
7619e7c7
AM
1001 /* Like GOT_TLSGD16, but no overflow. */
1002 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 1003 0, /* rightshift */
7619e7c7 1004 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 1005 16, /* bitsize */
b34976b6 1006 FALSE, /* pc_relative */
252b5132 1007 0, /* bitpos */
7619e7c7
AM
1008 complain_overflow_dont, /* complain_on_overflow */
1009 ppc_elf_unhandled_reloc, /* special_function */
1010 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 1011 FALSE, /* partial_inplace */
252b5132
RH
1012 0, /* src_mask */
1013 0xffff, /* dst_mask */
b34976b6 1014 FALSE), /* pcrel_offset */
252b5132 1015
7619e7c7
AM
1016 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1017 HOWTO (R_PPC_GOT_TLSGD16_HI,
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1020 16, /* bitsize */
1021 FALSE, /* pc_relative */
1022 0, /* bitpos */
1023 complain_overflow_dont, /* complain_on_overflow */
1024 ppc_elf_unhandled_reloc, /* special_function */
1025 "R_PPC_GOT_TLSGD16_HI", /* name */
1026 FALSE, /* partial_inplace */
1027 0, /* src_mask */
1028 0xffff, /* dst_mask */
1029 FALSE), /* pcrel_offset */
252b5132 1030
7619e7c7
AM
1031 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1032 HOWTO (R_PPC_GOT_TLSGD16_HA,
1033 16, /* rightshift */
1034 1, /* size (0 = byte, 1 = short, 2 = long) */
1035 16, /* bitsize */
1036 FALSE, /* pc_relative */
1037 0, /* bitpos */
1038 complain_overflow_dont, /* complain_on_overflow */
1039 ppc_elf_unhandled_reloc, /* special_function */
1040 "R_PPC_GOT_TLSGD16_HA", /* name */
1041 FALSE, /* partial_inplace */
1042 0, /* src_mask */
1043 0xffff, /* dst_mask */
1044 FALSE), /* pcrel_offset */
1045
1046 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1047 with values (sym+add)@dtpmod and zero, and computes the offset to the
1048 first entry. */
1049 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH
1050 0, /* rightshift */
1051 1, /* size (0 = byte, 1 = short, 2 = long) */
1052 16, /* bitsize */
7619e7c7 1053 FALSE, /* pc_relative */
252b5132
RH
1054 0, /* bitpos */
1055 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1056 ppc_elf_unhandled_reloc, /* special_function */
1057 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1058 FALSE, /* partial_inplace */
252b5132
RH
1059 0, /* src_mask */
1060 0xffff, /* dst_mask */
b34976b6 1061 FALSE), /* pcrel_offset */
252b5132 1062
7619e7c7
AM
1063 /* Like GOT_TLSLD16, but no overflow. */
1064 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1065 0, /* rightshift */
7619e7c7
AM
1066 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 16, /* bitsize */
b34976b6 1068 FALSE, /* pc_relative */
252b5132
RH
1069 0, /* bitpos */
1070 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1071 ppc_elf_unhandled_reloc, /* special_function */
1072 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1073 FALSE, /* partial_inplace */
252b5132 1074 0, /* src_mask */
7619e7c7 1075 0xffff, /* dst_mask */
b34976b6 1076 FALSE), /* pcrel_offset */
252b5132 1077
7619e7c7
AM
1078 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1079 HOWTO (R_PPC_GOT_TLSLD16_HI,
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 16, /* bitsize */
b34976b6 1083 FALSE, /* pc_relative */
252b5132
RH
1084 0, /* bitpos */
1085 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1086 ppc_elf_unhandled_reloc, /* special_function */
1087 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1088 FALSE, /* partial_inplace */
252b5132 1089 0, /* src_mask */
7619e7c7 1090 0xffff, /* dst_mask */
b34976b6 1091 FALSE), /* pcrel_offset */
252b5132 1092
7619e7c7
AM
1093 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1094 HOWTO (R_PPC_GOT_TLSLD16_HA,
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1097 16, /* bitsize */
1098 FALSE, /* pc_relative */
1099 0, /* bitpos */
1100 complain_overflow_dont, /* complain_on_overflow */
1101 ppc_elf_unhandled_reloc, /* special_function */
1102 "R_PPC_GOT_TLSLD16_HA", /* name */
1103 FALSE, /* partial_inplace */
1104 0, /* src_mask */
1105 0xffff, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1107
1108 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1109 the offset to the entry. */
1110 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH
1111 0, /* rightshift */
1112 1, /* size (0 = byte, 1 = short, 2 = long) */
1113 16, /* bitsize */
b34976b6 1114 FALSE, /* pc_relative */
252b5132
RH
1115 0, /* bitpos */
1116 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1117 ppc_elf_unhandled_reloc, /* special_function */
1118 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1119 FALSE, /* partial_inplace */
252b5132
RH
1120 0, /* src_mask */
1121 0xffff, /* dst_mask */
b34976b6 1122 FALSE), /* pcrel_offset */
252b5132 1123
7619e7c7
AM
1124 /* Like GOT_DTPREL16, but no overflow. */
1125 HOWTO (R_PPC_GOT_DTPREL16_LO,
1126 0, /* rightshift */
1127 1, /* size (0 = byte, 1 = short, 2 = long) */
1128 16, /* bitsize */
1129 FALSE, /* pc_relative */
1130 0, /* bitpos */
1131 complain_overflow_dont, /* complain_on_overflow */
1132 ppc_elf_unhandled_reloc, /* special_function */
1133 "R_PPC_GOT_DTPREL16_LO", /* name */
1134 FALSE, /* partial_inplace */
1135 0, /* src_mask */
1136 0xffff, /* dst_mask */
1137 FALSE), /* pcrel_offset */
252b5132 1138
7619e7c7
AM
1139 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1140 HOWTO (R_PPC_GOT_DTPREL16_HI,
1141 16, /* rightshift */
1142 1, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 ppc_elf_unhandled_reloc, /* special_function */
1148 "R_PPC_GOT_DTPREL16_HI", /* name */
1149 FALSE, /* partial_inplace */
1150 0, /* src_mask */
1151 0xffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
252b5132 1153
7619e7c7
AM
1154 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1155 HOWTO (R_PPC_GOT_DTPREL16_HA,
1156 16, /* rightshift */
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1158 16, /* bitsize */
1159 FALSE, /* pc_relative */
1160 0, /* bitpos */
1161 complain_overflow_dont, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc, /* special_function */
1163 "R_PPC_GOT_DTPREL16_HA", /* name */
1164 FALSE, /* partial_inplace */
1165 0, /* src_mask */
1166 0xffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
c3668558 1168
7619e7c7
AM
1169 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1170 offset to the entry. */
1171 HOWTO (R_PPC_GOT_TPREL16,
1172 0, /* rightshift */
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1174 16, /* bitsize */
1175 FALSE, /* pc_relative */
1176 0, /* bitpos */
1177 complain_overflow_signed, /* complain_on_overflow */
1178 ppc_elf_unhandled_reloc, /* special_function */
1179 "R_PPC_GOT_TPREL16", /* name */
1180 FALSE, /* partial_inplace */
1181 0, /* src_mask */
1182 0xffff, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1184
1185 /* Like GOT_TPREL16, but no overflow. */
1186 HOWTO (R_PPC_GOT_TPREL16_LO,
1187 0, /* rightshift */
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1189 16, /* bitsize */
1190 FALSE, /* pc_relative */
1191 0, /* bitpos */
1192 complain_overflow_dont, /* complain_on_overflow */
1193 ppc_elf_unhandled_reloc, /* special_function */
1194 "R_PPC_GOT_TPREL16_LO", /* name */
1195 FALSE, /* partial_inplace */
1196 0, /* src_mask */
1197 0xffff, /* dst_mask */
1198 FALSE), /* pcrel_offset */
1199
1200 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1201 HOWTO (R_PPC_GOT_TPREL16_HI,
1202 16, /* rightshift */
1203 1, /* size (0 = byte, 1 = short, 2 = long) */
1204 16, /* bitsize */
1205 FALSE, /* pc_relative */
1206 0, /* bitpos */
1207 complain_overflow_dont, /* complain_on_overflow */
1208 ppc_elf_unhandled_reloc, /* special_function */
1209 "R_PPC_GOT_TPREL16_HI", /* name */
1210 FALSE, /* partial_inplace */
1211 0, /* src_mask */
1212 0xffff, /* dst_mask */
1213 FALSE), /* pcrel_offset */
1214
1215 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1216 HOWTO (R_PPC_GOT_TPREL16_HA,
1217 16, /* rightshift */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1219 16, /* bitsize */
1220 FALSE, /* pc_relative */
1221 0, /* bitpos */
1222 complain_overflow_dont, /* complain_on_overflow */
1223 ppc_elf_unhandled_reloc, /* special_function */
1224 "R_PPC_GOT_TPREL16_HA", /* name */
1225 FALSE, /* partial_inplace */
1226 0, /* src_mask */
1227 0xffff, /* dst_mask */
1228 FALSE), /* pcrel_offset */
1229
1230 /* The remaining relocs are from the Embedded ELF ABI, and are not
1231 in the SVR4 ELF ABI. */
1232
1233 /* 32 bit value resulting from the addend minus the symbol. */
1234 HOWTO (R_PPC_EMB_NADDR32, /* type */
1235 0, /* rightshift */
1236 2, /* size (0 = byte, 1 = short, 2 = long) */
1237 32, /* bitsize */
1238 FALSE, /* pc_relative */
1239 0, /* bitpos */
86c95733 1240 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1241 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1242 "R_PPC_EMB_NADDR32", /* name */
1243 FALSE, /* partial_inplace */
1244 0, /* src_mask */
1245 0xffffffff, /* dst_mask */
1246 FALSE), /* pcrel_offset */
1247
1248 /* 16 bit value resulting from the addend minus the symbol. */
1249 HOWTO (R_PPC_EMB_NADDR16, /* type */
1250 0, /* rightshift */
1251 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 16, /* bitsize */
1253 FALSE, /* pc_relative */
1254 0, /* bitpos */
86c95733 1255 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1256 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1257 "R_PPC_EMB_NADDR16", /* name */
1258 FALSE, /* partial_inplace */
1259 0, /* src_mask */
1260 0xffff, /* dst_mask */
1261 FALSE), /* pcrel_offset */
1262
1263 /* 16 bit value resulting from the addend minus the symbol. */
1264 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1265 0, /* rightshift */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 16, /* bitsize */
1268 FALSE, /* pc_relative */
1269 0, /* bitpos */
1270 complain_overflow_dont,/* complain_on_overflow */
3ce51288 1271 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1272 "R_PPC_EMB_ADDR16_LO", /* name */
1273 FALSE, /* partial_inplace */
1274 0, /* src_mask */
1275 0xffff, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1277
1278 /* The high order 16 bits of the addend minus the symbol. */
1279 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1280 16, /* rightshift */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1282 16, /* bitsize */
1283 FALSE, /* pc_relative */
1284 0, /* bitpos */
1285 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1286 ppc_elf_unhandled_reloc, /* special_function */
7619e7c7
AM
1287 "R_PPC_EMB_NADDR16_HI", /* name */
1288 FALSE, /* partial_inplace */
1289 0, /* src_mask */
1290 0xffff, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1292
1293 /* The high order 16 bits of the result of the addend minus the address,
1294 plus 1 if the contents of the low 16 bits, treated as a signed number,
1295 is negative. */
1296 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1297 16, /* rightshift */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1299 16, /* bitsize */
1300 FALSE, /* pc_relative */
1301 0, /* bitpos */
1302 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1303 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1304 "R_PPC_EMB_NADDR16_HA", /* name */
1305 FALSE, /* partial_inplace */
1306 0, /* src_mask */
1307 0xffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1309
1310 /* 16 bit value resulting from allocating a 4 byte word to hold an
1311 address in the .sdata section, and returning the offset from
1312 _SDA_BASE_ for that relocation. */
1313 HOWTO (R_PPC_EMB_SDAI16, /* type */
1314 0, /* rightshift */
1315 1, /* size (0 = byte, 1 = short, 2 = long) */
1316 16, /* bitsize */
1317 FALSE, /* pc_relative */
1318 0, /* bitpos */
bd6c6e2b 1319 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1320 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1321 "R_PPC_EMB_SDAI16", /* name */
1322 FALSE, /* partial_inplace */
1323 0, /* src_mask */
1324 0xffff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1326
1327 /* 16 bit value resulting from allocating a 4 byte word to hold an
1328 address in the .sdata2 section, and returning the offset from
1329 _SDA2_BASE_ for that relocation. */
1330 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1331 0, /* rightshift */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1333 16, /* bitsize */
1334 FALSE, /* pc_relative */
1335 0, /* bitpos */
bd6c6e2b 1336 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1337 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1338 "R_PPC_EMB_SDA2I16", /* name */
1339 FALSE, /* partial_inplace */
1340 0, /* src_mask */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1343
1344 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1345 small data items. */
1346 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1347 0, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1349 16, /* bitsize */
1350 FALSE, /* pc_relative */
1351 0, /* bitpos */
1352 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1353 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1354 "R_PPC_EMB_SDA2REL", /* name */
1355 FALSE, /* partial_inplace */
1356 0, /* src_mask */
1357 0xffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1359
1360 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1361 signed offset from the appropriate base, and filling in the register
1362 field with the appropriate register (0, 2, or 13). */
1363 HOWTO (R_PPC_EMB_SDA21, /* type */
1364 0, /* rightshift */
1365 2, /* size (0 = byte, 1 = short, 2 = long) */
1366 16, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1370 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1371 "R_PPC_EMB_SDA21", /* name */
1372 FALSE, /* partial_inplace */
1373 0, /* src_mask */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376
1377 /* Relocation not handled: R_PPC_EMB_MRKREF */
1378 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1379 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1380 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1382 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1383
1384 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1385 in the 16 bit signed offset from the appropriate base, and filling in the
1386 register field with the appropriate register (0, 2, or 13). */
1387 HOWTO (R_PPC_EMB_RELSDA, /* type */
1388 0, /* rightshift */
1389 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 16, /* bitsize */
ddfd6795 1391 FALSE, /* pc_relative */
25dbc73a
AM
1392 0, /* bitpos */
1393 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1394 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a
AM
1395 "R_PPC_EMB_RELSDA", /* name */
1396 FALSE, /* partial_inplace */
1397 0, /* src_mask */
1398 0xffff, /* dst_mask */
1399 FALSE), /* pcrel_offset */
1400
b9c361e0
JL
1401 /* A relative 8 bit branch. */
1402 HOWTO (R_PPC_VLE_REL8, /* type */
1403 1, /* rightshift */
1404 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 8, /* bitsize */
1406 TRUE, /* pc_relative */
1407 0, /* bitpos */
1408 complain_overflow_signed, /* complain_on_overflow */
1409 bfd_elf_generic_reloc, /* special_function */
1410 "R_PPC_VLE_REL8", /* name */
1411 FALSE, /* partial_inplace */
1412 0, /* src_mask */
1413 0xff, /* dst_mask */
1414 TRUE), /* pcrel_offset */
68ffbac6 1415
b9c361e0
JL
1416 /* A relative 15 bit branch. */
1417 HOWTO (R_PPC_VLE_REL15, /* type */
1418 1, /* rightshift */
1419 2, /* size (0 = byte, 1 = short, 2 = long) */
1420 15, /* bitsize */
1421 TRUE, /* pc_relative */
1422 1, /* bitpos */
1423 complain_overflow_signed, /* complain_on_overflow */
1424 bfd_elf_generic_reloc, /* special_function */
1425 "R_PPC_VLE_REL15", /* name */
1426 FALSE, /* partial_inplace */
1427 0, /* src_mask */
dfdaec14 1428 0xfffe, /* dst_mask */
b9c361e0
JL
1429 TRUE), /* pcrel_offset */
1430
68ffbac6 1431 /* A relative 24 bit branch. */
b9c361e0
JL
1432 HOWTO (R_PPC_VLE_REL24, /* type */
1433 1, /* rightshift */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1435 24, /* bitsize */
1436 TRUE, /* pc_relative */
1437 1, /* bitpos */
1438 complain_overflow_signed, /* complain_on_overflow */
1439 bfd_elf_generic_reloc, /* special_function */
1440 "R_PPC_VLE_REL24", /* name */
1441 FALSE, /* partial_inplace */
1442 0, /* src_mask */
1443 0x1fffffe, /* dst_mask */
1444 TRUE), /* pcrel_offset */
1445
1446 /* The 16 LSBS in split16a format. */
1447 HOWTO (R_PPC_VLE_LO16A, /* type */
1448 0, /* rightshift */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1450 16, /* bitsize */
bdaacd3a 1451 FALSE, /* pc_relative */
b9c361e0 1452 0, /* bitpos */
86c95733 1453 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1454 ppc_elf_unhandled_reloc, /* special_function */
b9c361e0
JL
1455 "R_PPC_VLE_LO16A", /* name */
1456 FALSE, /* partial_inplace */
1457 0, /* src_mask */
bdaacd3a 1458 0x1f007ff, /* dst_mask */
b9c361e0
JL
1459 FALSE), /* pcrel_offset */
1460
1461 /* The 16 LSBS in split16d format. */
1462 HOWTO (R_PPC_VLE_LO16D, /* type */
1463 0, /* rightshift */
1464 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1465 16, /* bitsize */
b9c361e0
JL
1466 FALSE, /* pc_relative */
1467 0, /* bitpos */
86c95733 1468 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1469 ppc_elf_unhandled_reloc, /* special_function */
1470 "R_PPC_VLE_LO16D", /* name */
b9c361e0
JL
1471 FALSE, /* partial_inplace */
1472 0, /* src_mask */
1473 0x1f07ff, /* dst_mask */
1474 FALSE), /* pcrel_offset */
1475
1476 /* Bits 16-31 split16a format. */
1477 HOWTO (R_PPC_VLE_HI16A, /* type */
86c95733 1478 16, /* rightshift */
b9c361e0 1479 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1480 16, /* bitsize */
b9c361e0
JL
1481 FALSE, /* pc_relative */
1482 0, /* bitpos */
86c95733 1483 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1484 ppc_elf_unhandled_reloc, /* special_function */
1485 "R_PPC_VLE_HI16A", /* name */
b9c361e0
JL
1486 FALSE, /* partial_inplace */
1487 0, /* src_mask */
bdaacd3a 1488 0x1f007ff, /* dst_mask */
b9c361e0
JL
1489 FALSE), /* pcrel_offset */
1490
1491 /* Bits 16-31 split16d format. */
1492 HOWTO (R_PPC_VLE_HI16D, /* type */
86c95733 1493 16, /* rightshift */
b9c361e0 1494 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1495 16, /* bitsize */
b9c361e0
JL
1496 FALSE, /* pc_relative */
1497 0, /* bitpos */
86c95733 1498 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1499 ppc_elf_unhandled_reloc, /* special_function */
1500 "R_PPC_VLE_HI16D", /* name */
b9c361e0
JL
1501 FALSE, /* partial_inplace */
1502 0, /* src_mask */
1503 0x1f07ff, /* dst_mask */
1504 FALSE), /* pcrel_offset */
1505
1506 /* Bits 16-31 (High Adjusted) in split16a format. */
1507 HOWTO (R_PPC_VLE_HA16A, /* type */
86c95733 1508 16, /* rightshift */
b9c361e0 1509 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1510 16, /* bitsize */
b9c361e0
JL
1511 FALSE, /* pc_relative */
1512 0, /* bitpos */
86c95733 1513 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1514 ppc_elf_unhandled_reloc, /* special_function */
1515 "R_PPC_VLE_HA16A", /* name */
b9c361e0
JL
1516 FALSE, /* partial_inplace */
1517 0, /* src_mask */
bdaacd3a 1518 0x1f007ff, /* dst_mask */
b9c361e0
JL
1519 FALSE), /* pcrel_offset */
1520
1521 /* Bits 16-31 (High Adjusted) in split16d format. */
1522 HOWTO (R_PPC_VLE_HA16D, /* type */
86c95733 1523 16, /* rightshift */
b9c361e0 1524 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1525 16, /* bitsize */
b9c361e0
JL
1526 FALSE, /* pc_relative */
1527 0, /* bitpos */
86c95733 1528 complain_overflow_dont, /* complain_on_overflow */
3ce51288
AM
1529 ppc_elf_unhandled_reloc, /* special_function */
1530 "R_PPC_VLE_HA16D", /* name */
b9c361e0
JL
1531 FALSE, /* partial_inplace */
1532 0, /* src_mask */
1533 0x1f07ff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1535
86c95733
AM
1536 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1537 instructions. If the register base is 0 then the linker changes
1538 the e_add16i to an e_li instruction. */
1539 HOWTO (R_PPC_VLE_SDA21, /* type */
b9c361e0
JL
1540 0, /* rightshift */
1541 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1542 16, /* bitsize */
b9c361e0
JL
1543 FALSE, /* pc_relative */
1544 0, /* bitpos */
86c95733 1545 complain_overflow_signed, /* complain_on_overflow */
3ce51288
AM
1546 ppc_elf_unhandled_reloc, /* special_function */
1547 "R_PPC_VLE_SDA21", /* name */
b9c361e0
JL
1548 FALSE, /* partial_inplace */
1549 0, /* src_mask */
1550 0xffff, /* dst_mask */
1551 FALSE), /* pcrel_offset */
1552
86c95733 1553 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
b9c361e0
JL
1554 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1555 0, /* rightshift */
1556 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1557 16, /* bitsize */
b9c361e0
JL
1558 FALSE, /* pc_relative */
1559 0, /* bitpos */
86c95733 1560 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1561 ppc_elf_unhandled_reloc, /* special_function */
b9c361e0
JL
1562 "R_PPC_VLE_SDA21_LO", /* name */
1563 FALSE, /* partial_inplace */
1564 0, /* src_mask */
86c95733 1565 0xffff, /* dst_mask */
b9c361e0
JL
1566 FALSE), /* pcrel_offset */
1567
1568 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1569 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1570 0, /* rightshift */
1571 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1572 16, /* bitsize */
b9c361e0
JL
1573 FALSE, /* pc_relative */
1574 0, /* bitpos */
3ce51288
AM
1575 complain_overflow_dont, /* complain_on_overflow */
1576 ppc_elf_unhandled_reloc, /* special_function */
1577 "R_PPC_VLE_SDAREL_LO16A", /* name */
b9c361e0
JL
1578 FALSE, /* partial_inplace */
1579 0, /* src_mask */
bdaacd3a 1580 0x1f007ff, /* dst_mask */
b9c361e0
JL
1581 FALSE), /* pcrel_offset */
1582
1583 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
b9c361e0
JL
1584 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1585 0, /* rightshift */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1587 16, /* bitsize */
b9c361e0
JL
1588 FALSE, /* pc_relative */
1589 0, /* bitpos */
3ce51288
AM
1590 complain_overflow_dont, /* complain_on_overflow */
1591 ppc_elf_unhandled_reloc, /* special_function */
1592 "R_PPC_VLE_SDAREL_LO16D", /* name */
b9c361e0
JL
1593 FALSE, /* partial_inplace */
1594 0, /* src_mask */
1595 0x1f07ff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1597
1598 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
3ce51288 1599 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
86c95733 1600 16, /* rightshift */
b9c361e0 1601 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1602 16, /* bitsize */
b9c361e0
JL
1603 FALSE, /* pc_relative */
1604 0, /* bitpos */
3ce51288
AM
1605 complain_overflow_dont, /* complain_on_overflow */
1606 ppc_elf_unhandled_reloc, /* special_function */
1607 "R_PPC_VLE_SDAREL_HI16A", /* name */
b9c361e0
JL
1608 FALSE, /* partial_inplace */
1609 0, /* src_mask */
bdaacd3a 1610 0x1f007ff, /* dst_mask */
b9c361e0
JL
1611 FALSE), /* pcrel_offset */
1612
1613 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
3ce51288 1614 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
86c95733 1615 16, /* rightshift */
b9c361e0 1616 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1617 16, /* bitsize */
b9c361e0
JL
1618 FALSE, /* pc_relative */
1619 0, /* bitpos */
3ce51288
AM
1620 complain_overflow_dont, /* complain_on_overflow */
1621 ppc_elf_unhandled_reloc, /* special_function */
1622 "R_PPC_VLE_SDAREL_HI16D", /* name */
b9c361e0
JL
1623 FALSE, /* partial_inplace */
1624 0, /* src_mask */
1625 0x1f07ff, /* dst_mask */
1626 FALSE), /* pcrel_offset */
1627
1628 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
3ce51288 1629 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
86c95733 1630 16, /* rightshift */
b9c361e0 1631 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1632 16, /* bitsize */
b9c361e0
JL
1633 FALSE, /* pc_relative */
1634 0, /* bitpos */
3ce51288
AM
1635 complain_overflow_dont, /* complain_on_overflow */
1636 ppc_elf_unhandled_reloc, /* special_function */
1637 "R_PPC_VLE_SDAREL_HA16A", /* name */
b9c361e0
JL
1638 FALSE, /* partial_inplace */
1639 0, /* src_mask */
bdaacd3a 1640 0x1f007ff, /* dst_mask */
b9c361e0
JL
1641 FALSE), /* pcrel_offset */
1642
1643 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
3ce51288 1644 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
86c95733 1645 16, /* rightshift */
b9c361e0 1646 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1647 16, /* bitsize */
b9c361e0
JL
1648 FALSE, /* pc_relative */
1649 0, /* bitpos */
3ce51288
AM
1650 complain_overflow_dont, /* complain_on_overflow */
1651 ppc_elf_unhandled_reloc, /* special_function */
1652 "R_PPC_VLE_SDAREL_HA16D", /* name */
b9c361e0
JL
1653 FALSE, /* partial_inplace */
1654 0, /* src_mask */
1655 0x1f07ff, /* dst_mask */
1656 FALSE), /* pcrel_offset */
1657
e054468f
AM
1658 HOWTO (R_PPC_IRELATIVE, /* type */
1659 0, /* rightshift */
1660 2, /* size (0 = byte, 1 = short, 2 = long) */
1661 32, /* bitsize */
1662 FALSE, /* pc_relative */
1663 0, /* bitpos */
86c95733 1664 complain_overflow_dont, /* complain_on_overflow */
3ce51288 1665 ppc_elf_unhandled_reloc, /* special_function */
e054468f
AM
1666 "R_PPC_IRELATIVE", /* name */
1667 FALSE, /* partial_inplace */
1668 0, /* src_mask */
1669 0xffffffff, /* dst_mask */
1670 FALSE), /* pcrel_offset */
1671
d7128ce4
AM
1672 /* A 16 bit relative relocation. */
1673 HOWTO (R_PPC_REL16, /* type */
1674 0, /* rightshift */
1675 1, /* size (0 = byte, 1 = short, 2 = long) */
1676 16, /* bitsize */
1677 TRUE, /* pc_relative */
1678 0, /* bitpos */
86c95733 1679 complain_overflow_signed, /* complain_on_overflow */
d7128ce4
AM
1680 bfd_elf_generic_reloc, /* special_function */
1681 "R_PPC_REL16", /* name */
1682 FALSE, /* partial_inplace */
1683 0, /* src_mask */
1684 0xffff, /* dst_mask */
1685 TRUE), /* pcrel_offset */
1686
1687 /* A 16 bit relative relocation without overflow. */
1688 HOWTO (R_PPC_REL16_LO, /* type */
1689 0, /* rightshift */
1690 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 16, /* bitsize */
1692 TRUE, /* pc_relative */
1693 0, /* bitpos */
1694 complain_overflow_dont,/* complain_on_overflow */
1695 bfd_elf_generic_reloc, /* special_function */
1696 "R_PPC_REL16_LO", /* name */
1697 FALSE, /* partial_inplace */
1698 0, /* src_mask */
1699 0xffff, /* dst_mask */
1700 TRUE), /* pcrel_offset */
1701
1702 /* The high order 16 bits of a relative address. */
1703 HOWTO (R_PPC_REL16_HI, /* type */
1704 16, /* rightshift */
1705 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 16, /* bitsize */
1707 TRUE, /* pc_relative */
1708 0, /* bitpos */
1709 complain_overflow_dont, /* complain_on_overflow */
1710 bfd_elf_generic_reloc, /* special_function */
1711 "R_PPC_REL16_HI", /* name */
1712 FALSE, /* partial_inplace */
1713 0, /* src_mask */
1714 0xffff, /* dst_mask */
1715 TRUE), /* pcrel_offset */
1716
1717 /* The high order 16 bits of a relative address, plus 1 if the contents of
1718 the low 16 bits, treated as a signed number, is negative. */
1719 HOWTO (R_PPC_REL16_HA, /* type */
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1722 16, /* bitsize */
1723 TRUE, /* pc_relative */
1724 0, /* bitpos */
1725 complain_overflow_dont, /* complain_on_overflow */
1726 ppc_elf_addr16_ha_reloc, /* special_function */
1727 "R_PPC_REL16_HA", /* name */
1728 FALSE, /* partial_inplace */
1729 0, /* src_mask */
1730 0xffff, /* dst_mask */
1731 TRUE), /* pcrel_offset */
1732
a680de9a
PB
1733 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1734 HOWTO (R_PPC_REL16DX_HA, /* type */
1735 16, /* rightshift */
1736 2, /* size (0 = byte, 1 = short, 2 = long) */
1737 16, /* bitsize */
1738 TRUE, /* pc_relative */
1739 0, /* bitpos */
1740 complain_overflow_signed, /* complain_on_overflow */
1741 ppc_elf_addr16_ha_reloc, /* special_function */
1742 "R_PPC_REL16DX_HA", /* name */
1743 FALSE, /* partial_inplace */
1744 0, /* src_mask */
1745 0x1fffc1, /* dst_mask */
1746 TRUE), /* pcrel_offset */
1747
25dbc73a
AM
1748 /* GNU extension to record C++ vtable hierarchy. */
1749 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1750 0, /* rightshift */
1751 0, /* size (0 = byte, 1 = short, 2 = long) */
1752 0, /* bitsize */
1753 FALSE, /* pc_relative */
1754 0, /* bitpos */
1755 complain_overflow_dont, /* complain_on_overflow */
1756 NULL, /* special_function */
1757 "R_PPC_GNU_VTINHERIT", /* name */
1758 FALSE, /* partial_inplace */
1759 0, /* src_mask */
1760 0, /* dst_mask */
1761 FALSE), /* pcrel_offset */
1762
1763 /* GNU extension to record C++ vtable member usage. */
1764 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1765 0, /* rightshift */
1766 0, /* size (0 = byte, 1 = short, 2 = long) */
1767 0, /* bitsize */
1768 FALSE, /* pc_relative */
1769 0, /* bitpos */
1770 complain_overflow_dont, /* complain_on_overflow */
1771 NULL, /* special_function */
1772 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM
1773 FALSE, /* partial_inplace */
1774 0, /* src_mask */
25dbc73a 1775 0, /* dst_mask */
7619e7c7
AM
1776 FALSE), /* pcrel_offset */
1777
25dbc73a
AM
1778 /* Phony reloc to handle AIX style TOC entries. */
1779 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM
1780 0, /* rightshift */
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1782 16, /* bitsize */
1783 FALSE, /* pc_relative */
1784 0, /* bitpos */
25dbc73a 1785 complain_overflow_signed, /* complain_on_overflow */
3ce51288 1786 ppc_elf_unhandled_reloc, /* special_function */
25dbc73a 1787 "R_PPC_TOC16", /* name */
7619e7c7
AM
1788 FALSE, /* partial_inplace */
1789 0, /* src_mask */
1790 0xffff, /* dst_mask */
1791 FALSE), /* pcrel_offset */
25dbc73a 1792};
70a38d42
SDJ
1793
1794/* External 32-bit PPC structure for PRPSINFO. This structure is
1795 ABI-defined, thus we choose to use char arrays here in order to
1796 avoid dealing with different types in different architectures.
1797
1798 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1799 most non-PPC architectures use `short int'.
1800
1801 This structure will ultimately be written in the corefile's note
1802 section, as the PRPSINFO. */
1803
1804struct elf_external_ppc_linux_prpsinfo32
1805 {
1806 char pr_state; /* Numeric process state. */
1807 char pr_sname; /* Char for pr_state. */
1808 char pr_zomb; /* Zombie. */
1809 char pr_nice; /* Nice val. */
1810 char pr_flag[4]; /* Flags. */
1811 char pr_uid[4];
1812 char pr_gid[4];
1813 char pr_pid[4];
1814 char pr_ppid[4];
1815 char pr_pgrp[4];
1816 char pr_sid[4];
1817 char pr_fname[16]; /* Filename of executable. */
1818 char pr_psargs[80]; /* Initial part of arg list. */
1819 };
1820
aeb70569
AM
1821/* Helper function to copy an elf_internal_linux_prpsinfo in host
1822 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
70a38d42 1823
aeb70569
AM
1824static inline void
1825swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1826 const struct elf_internal_linux_prpsinfo *from,
1827 struct elf_external_ppc_linux_prpsinfo32 *to)
1828{
1829 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1830 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1831 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1832 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1833 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1834 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1835 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1836 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1837 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1838 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1839 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1840 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1841 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1842}
25dbc73a
AM
1843\f
1844/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1845
1846static void
1847ppc_elf_howto_init (void)
1848{
1849 unsigned int i, type;
1850
1851 for (i = 0;
1852 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1853 i++)
1854 {
1855 type = ppc_elf_howto_raw[i].type;
1856 if (type >= (sizeof (ppc_elf_howto_table)
1857 / sizeof (ppc_elf_howto_table[0])))
1858 abort ();
1859 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1860 }
1861}
1862
1863static reloc_howto_type *
1864ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1865 bfd_reloc_code_real_type code)
1866{
1867 enum elf_ppc_reloc_type r;
1868
1869 /* Initialize howto table if not already done. */
1870 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1871 ppc_elf_howto_init ();
1872
1873 switch (code)
1874 {
1875 default:
1876 return NULL;
1877
1878 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1879 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1880 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1fe532cf 1881 case BFD_RELOC_PPC64_ADDR16_DS:
25dbc73a 1882 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1fe532cf 1883 case BFD_RELOC_PPC64_ADDR16_LO_DS:
25dbc73a
AM
1884 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1885 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1886 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1887 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1888 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1889 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1890 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1891 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1892 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1893 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1fe532cf 1894 case BFD_RELOC_PPC64_GOT16_DS:
25dbc73a 1895 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1fe532cf 1896 case BFD_RELOC_PPC64_GOT16_LO_DS:
25dbc73a
AM
1897 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1898 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1899 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1900 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1901 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1902 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1903 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1904 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1905 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1906 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1fe532cf 1907 case BFD_RELOC_PPC64_PLT16_LO_DS:
25dbc73a
AM
1908 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1909 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1910 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1911 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1fe532cf 1912 case BFD_RELOC_PPC64_SECTOFF_DS:
25dbc73a 1913 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1fe532cf 1914 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
25dbc73a
AM
1915 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1916 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1917 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1918 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1fe532cf 1919 case BFD_RELOC_PPC64_TOC16_DS:
25dbc73a
AM
1920 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1921 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
727fc41e
AM
1922 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1923 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
25dbc73a 1924 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1fe532cf 1925 case BFD_RELOC_PPC64_TPREL16_DS:
25dbc73a 1926 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1fe532cf 1927 case BFD_RELOC_PPC64_TPREL16_LO_DS:
25dbc73a
AM
1928 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1929 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1930 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1931 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1fe532cf 1932 case BFD_RELOC_PPC64_DTPREL16_DS:
25dbc73a 1933 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1fe532cf 1934 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
25dbc73a
AM
1935 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1936 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1937 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1938 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1939 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1940 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1941 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1942 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1943 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1944 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1945 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1946 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1947 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1948 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1949 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1950 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1951 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1952 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1953 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1954 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1955 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1956 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1957 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1958 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1959 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1960 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1961 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1962 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1963 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1964 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1965 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1966 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1967 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1968 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1969 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1970 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
b9c361e0
JL
1971 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1972 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1973 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1974 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1975 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1976 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1977 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1978 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1979 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1980 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1981 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1982 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1983 r = R_PPC_VLE_SDAREL_LO16A;
1984 break;
1985 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1986 r = R_PPC_VLE_SDAREL_LO16D;
1987 break;
1988 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1989 r = R_PPC_VLE_SDAREL_HI16A;
1990 break;
1991 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1992 r = R_PPC_VLE_SDAREL_HI16D;
1993 break;
1994 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1995 r = R_PPC_VLE_SDAREL_HA16A;
1996 break;
1997 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1998 r = R_PPC_VLE_SDAREL_HA16D;
1999 break;
d7128ce4
AM
2000 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2001 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2002 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2003 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
a680de9a 2004 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
25dbc73a
AM
2005 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2006 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2007 }
2008
2009 return ppc_elf_howto_table[r];
2010};
2011
157090f7
AM
2012static reloc_howto_type *
2013ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2014 const char *r_name)
2015{
2016 unsigned int i;
2017
2018 for (i = 0;
2019 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2020 i++)
2021 if (ppc_elf_howto_raw[i].name != NULL
2022 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2023 return &ppc_elf_howto_raw[i];
2024
2025 return NULL;
2026}
2027
25dbc73a
AM
2028/* Set the howto pointer for a PowerPC ELF reloc. */
2029
2030static void
2031ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2032 arelent *cache_ptr,
2033 Elf_Internal_Rela *dst)
2034{
cd21f5da
NC
2035 unsigned int r_type;
2036
25dbc73a
AM
2037 /* Initialize howto table if not already done. */
2038 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2039 ppc_elf_howto_init ();
2040
cd21f5da
NC
2041 r_type = ELF32_R_TYPE (dst->r_info);
2042 if (r_type >= R_PPC_max)
2043 {
64d29018 2044 (*_bfd_error_handler) (_("%B: unrecognised PPC reloc number: %d"),
cd21f5da
NC
2045 abfd, r_type);
2046 bfd_set_error (bfd_error_bad_value);
2047 r_type = R_PPC_NONE;
2048 }
2049 cache_ptr->howto = ppc_elf_howto_table[r_type];
375de94a
AM
2050
2051 /* Just because the above assert didn't trigger doesn't mean that
2052 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2053 if (!cache_ptr->howto)
2054 {
2055 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
cd21f5da 2056 abfd, r_type);
375de94a
AM
2057 bfd_set_error (bfd_error_bad_value);
2058
2059 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2060 }
25dbc73a
AM
2061}
2062
d7128ce4 2063/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM
2064
2065static bfd_reloc_status_type
2066ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2067 arelent *reloc_entry,
2068 asymbol *symbol,
2069 void *data ATTRIBUTE_UNUSED,
2070 asection *input_section,
2071 bfd *output_bfd,
2072 char **error_message ATTRIBUTE_UNUSED)
2073{
a680de9a
PB
2074 enum elf_ppc_reloc_type r_type;
2075 long insn;
2076 bfd_size_type octets;
2077 bfd_vma value;
25dbc73a
AM
2078
2079 if (output_bfd != NULL)
2080 {
2081 reloc_entry->address += input_section->output_offset;
2082 return bfd_reloc_ok;
2083 }
2084
a680de9a
PB
2085 reloc_entry->addend += 0x8000;
2086 r_type = reloc_entry->howto->type;
2087 if (r_type != R_PPC_REL16DX_HA)
2088 return bfd_reloc_continue;
2089
2090 value = 0;
2091 if (!bfd_is_com_section (symbol->section))
2092 value = symbol->value;
2093 value += (reloc_entry->addend
2094 + symbol->section->output_offset
2095 + symbol->section->output_section->vma);
2096 value -= (reloc_entry->address
2097 + input_section->output_offset
2098 + input_section->output_section->vma);
2099 value >>= 16;
2100
2101 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2102 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2103 insn &= ~0x1fffc1;
2104 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2105 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2106 return bfd_reloc_ok;
25dbc73a
AM
2107}
2108
2109static bfd_reloc_status_type
2110ppc_elf_unhandled_reloc (bfd *abfd,
2111 arelent *reloc_entry,
2112 asymbol *symbol,
2113 void *data,
2114 asection *input_section,
2115 bfd *output_bfd,
2116 char **error_message)
2117{
2118 /* If this is a relocatable link (output_bfd test tells us), just
2119 call the generic function. Any adjustment will be done at final
2120 link time. */
2121 if (output_bfd != NULL)
2122 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2123 input_section, output_bfd, error_message);
2124
2125 if (error_message != NULL)
2126 {
2127 static char buf[60];
2128 sprintf (buf, _("generic linker can't handle %s"),
2129 reloc_entry->howto->name);
2130 *error_message = buf;
2131 }
2132 return bfd_reloc_dangerous;
2133}
2134\f
2135/* Sections created by the linker. */
2136
2137typedef struct elf_linker_section
2138{
c9a2f333 2139 /* Pointer to the bfd section. */
25dbc73a 2140 asection *section;
c9a2f333
AM
2141 /* Section name. */
2142 const char *name;
2143 /* Associated bss section name. */
2144 const char *bss_name;
2145 /* Associated symbol name. */
2146 const char *sym_name;
046183de
AM
2147 /* Associated symbol. */
2148 struct elf_link_hash_entry *sym;
25dbc73a
AM
2149} elf_linker_section_t;
2150
2151/* Linked list of allocated pointer entries. This hangs off of the
2152 symbol lists, and provides allows us to return different pointers,
2153 based on different addend's. */
2154
2155typedef struct elf_linker_section_pointers
2156{
2157 /* next allocated pointer for this symbol */
2158 struct elf_linker_section_pointers *next;
2159 /* offset of pointer from beginning of section */
2160 bfd_vma offset;
2161 /* addend used */
2162 bfd_vma addend;
2163 /* which linker section this is */
2164 elf_linker_section_t *lsect;
25dbc73a
AM
2165} elf_linker_section_pointers_t;
2166
2167struct ppc_elf_obj_tdata
2168{
2169 struct elf_obj_tdata elf;
2170
2171 /* A mapping from local symbols to offsets into the various linker
2172 sections added. This is index by the symbol index. */
2173 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM
2174
2175 /* Flags used to auto-detect plt type. */
2176 unsigned int makes_plt_call : 1;
2177 unsigned int has_rel16 : 1;
25dbc73a
AM
2178};
2179
2180#define ppc_elf_tdata(bfd) \
2181 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 2182
25dbc73a
AM
2183#define elf_local_ptr_offsets(bfd) \
2184 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 2185
0c8d6e5c
AM
2186#define is_ppc_elf(bfd) \
2187 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2188 && elf_object_id (bfd) == PPC32_ELF_DATA)
0c8d6e5c 2189
25dbc73a 2190/* Override the generic function because we store some extras. */
7619e7c7 2191
25dbc73a
AM
2192static bfd_boolean
2193ppc_elf_mkobject (bfd *abfd)
2194{
0ffa91dd 2195 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
4dfe6ac6 2196 PPC32_ELF_DATA);
25dbc73a 2197}
7619e7c7 2198
14b57c7c
AM
2199/* When defaulting arch/mach, decode apuinfo to find a better match. */
2200
2201bfd_boolean
2202_bfd_elf_ppc_set_arch (bfd *abfd)
2203{
2204 unsigned long mach = 0;
2205 asection *s;
2206 unsigned char *contents;
2207
2208 if (abfd->arch_info->bits_per_word == 32
2209 && bfd_big_endian (abfd))
2210 {
2211
2212 for (s = abfd->sections; s != NULL; s = s->next)
2213 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2214 break;
2215 if (s != NULL)
2216 mach = bfd_mach_ppc_vle;
2217 }
2218
2219 if (mach == 0)
2220 {
2221 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2222 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2223 {
2224 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2225 unsigned int i;
2226
2227 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2228 {
2229 unsigned int val = bfd_get_32 (abfd, contents + i);
2230 switch (val >> 16)
2231 {
2232 case PPC_APUINFO_PMR:
2233 case PPC_APUINFO_RFMCI:
2234 if (mach == 0)
2235 mach = bfd_mach_ppc_titan;
2236 break;
2237
2238 case PPC_APUINFO_ISEL:
2239 case PPC_APUINFO_CACHELCK:
2240 if (mach == bfd_mach_ppc_titan)
2241 mach = bfd_mach_ppc_e500mc;
2242 break;
2243
2244 case PPC_APUINFO_SPE:
2245 case PPC_APUINFO_EFS:
2246 case PPC_APUINFO_BRLOCK:
2247 if (mach != bfd_mach_ppc_vle)
2248 mach = bfd_mach_ppc_e500;
2249
2250 case PPC_APUINFO_VLE:
2251 mach = bfd_mach_ppc_vle;
2252 break;
2253
2254 default:
2255 mach = -1ul;
2256 }
2257 }
2258 free (contents);
2259 }
2260 }
2261
2262 if (mach != 0 && mach != -1ul)
2263 {
2264 const bfd_arch_info_type *arch;
2265
2266 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2267 if (arch->mach == mach)
2268 {
2269 abfd->arch_info = arch;
2270 break;
2271 }
2272 }
2273 return TRUE;
2274}
2275
25dbc73a 2276/* Fix bad default arch selected for a 32 bit input bfd when the
14b57c7c 2277 default is 64 bit. Also select arch based on apuinfo. */
7619e7c7 2278
25dbc73a
AM
2279static bfd_boolean
2280ppc_elf_object_p (bfd *abfd)
2281{
14b57c7c
AM
2282 if (!abfd->arch_info->the_default)
2283 return TRUE;
2284
2285 if (abfd->arch_info->bits_per_word == 64)
25dbc73a
AM
2286 {
2287 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 2288
25dbc73a
AM
2289 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2290 {
2291 /* Relies on arch after 64 bit default being 32 bit default. */
2292 abfd->arch_info = abfd->arch_info->next;
2293 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2294 }
2295 }
14b57c7c 2296 return _bfd_elf_ppc_set_arch (abfd);
25dbc73a 2297}
7619e7c7 2298
25dbc73a 2299/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 2300
25dbc73a
AM
2301static bfd_boolean
2302ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2303{
2304 BFD_ASSERT (!elf_flags_init (abfd)
2305 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 2306
25dbc73a
AM
2307 elf_elfheader (abfd)->e_flags = flags;
2308 elf_flags_init (abfd) = TRUE;
2309 return TRUE;
2310}
2311
25dbc73a 2312/* Support for core dump NOTE sections. */
deaaf2f3 2313
b34976b6 2314static bfd_boolean
25dbc73a 2315ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 2316{
25dbc73a
AM
2317 int offset;
2318 unsigned int size;
252b5132 2319
25dbc73a
AM
2320 switch (note->descsz)
2321 {
2322 default:
2323 return FALSE;
252b5132 2324
25dbc73a
AM
2325 case 268: /* Linux/PPC. */
2326 /* pr_cursig */
228e534f 2327 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 2328
25dbc73a 2329 /* pr_pid */
228e534f 2330 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 2331
25dbc73a
AM
2332 /* pr_reg */
2333 offset = 72;
2334 size = 192;
deaaf2f3 2335
25dbc73a
AM
2336 break;
2337 }
deaaf2f3 2338
25dbc73a
AM
2339 /* Make a ".reg/999" section. */
2340 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2341 size, note->descpos + offset);
2342}
252b5132 2343
25dbc73a
AM
2344static bfd_boolean
2345ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2346{
2347 switch (note->descsz)
deaaf2f3 2348 {
25dbc73a
AM
2349 default:
2350 return FALSE;
deaaf2f3 2351
25dbc73a 2352 case 128: /* Linux/PPC elf_prpsinfo. */
228e534f 2353 elf_tdata (abfd)->core->pid
bc989cdc 2354 = bfd_get_32 (abfd, note->descdata + 16);
228e534f 2355 elf_tdata (abfd)->core->program
25dbc73a 2356 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
228e534f 2357 elf_tdata (abfd)->core->command
25dbc73a
AM
2358 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2359 }
9abc968f 2360
25dbc73a
AM
2361 /* Note that for some reason, a spurious space is tacked
2362 onto the end of the args in some (at least one anyway)
2363 implementations, so strip it off if it exists. */
70bccea4 2364
25dbc73a 2365 {
228e534f 2366 char *command = elf_tdata (abfd)->core->command;
25dbc73a 2367 int n = strlen (command);
70bccea4 2368
25dbc73a
AM
2369 if (0 < n && command[n - 1] == ' ')
2370 command[n - 1] = '\0';
2371 }
deaaf2f3 2372
25dbc73a
AM
2373 return TRUE;
2374}
deaaf2f3 2375
70a38d42 2376char *
aeb70569
AM
2377elfcore_write_ppc_linux_prpsinfo32
2378 (bfd *abfd,
2379 char *buf,
2380 int *bufsiz,
2381 const struct elf_internal_linux_prpsinfo *prpsinfo)
70a38d42
SDJ
2382{
2383 struct elf_external_ppc_linux_prpsinfo32 data;
2384
aeb70569 2385 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
70a38d42
SDJ
2386 return elfcore_write_note (abfd, buf, bufsiz,
2387 "CORE", NT_PRPSINFO, &data, sizeof (data));
2388}
2389
183e98be
AM
2390static char *
2391ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2392{
2393 switch (note_type)
2394 {
2395 default:
2396 return NULL;
2397
2398 case NT_PRPSINFO:
2399 {
2400 char data[128];
2401 va_list ap;
2402
2403 va_start (ap, note_type);
75cd47ed 2404 memset (data, 0, sizeof (data));
183e98be
AM
2405 strncpy (data + 32, va_arg (ap, const char *), 16);
2406 strncpy (data + 48, va_arg (ap, const char *), 80);
2407 va_end (ap);
2408 return elfcore_write_note (abfd, buf, bufsiz,
2409 "CORE", note_type, data, sizeof (data));
2410 }
2411
2412 case NT_PRSTATUS:
2413 {
2414 char data[268];
2415 va_list ap;
2416 long pid;
2417 int cursig;
2418 const void *greg;
2419
2420 va_start (ap, note_type);
2421 memset (data, 0, 72);
2422 pid = va_arg (ap, long);
2423 bfd_put_32 (abfd, pid, data + 24);
2424 cursig = va_arg (ap, int);
2425 bfd_put_16 (abfd, cursig, data + 12);
2426 greg = va_arg (ap, const void *);
2427 memcpy (data + 72, greg, 192);
2428 memset (data + 264, 0, 4);
2429 va_end (ap);
2430 return elfcore_write_note (abfd, buf, bufsiz,
2431 "CORE", note_type, data, sizeof (data));
2432 }
2433 }
2434}
2435
b9c361e0 2436static flagword
68ffbac6 2437ppc_elf_lookup_section_flags (char *flag_name)
b9c361e0
JL
2438{
2439
2440 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2441 return SHF_PPC_VLE;
2442
2443 return 0;
2444}
2445
2446/* Add the VLE flag if required. */
2447
2448bfd_boolean
2449ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2450{
2451 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2452 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2453 shdr->sh_flags |= SHF_PPC_VLE;
2454
2455 return TRUE;
2456}
2457
25dbc73a
AM
2458/* Return address for Ith PLT stub in section PLT, for relocation REL
2459 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 2460
25dbc73a
AM
2461static bfd_vma
2462ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2463 const asection *plt ATTRIBUTE_UNUSED,
2464 const arelent *rel)
2465{
2466 return rel->address;
2467}
deaaf2f3 2468
25dbc73a 2469/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
2470 is called when bfd_section_from_shdr finds a section with an unknown
2471 type. */
deaaf2f3 2472
25dbc73a 2473static bfd_boolean
6dc132d9
L
2474ppc_elf_section_from_shdr (bfd *abfd,
2475 Elf_Internal_Shdr *hdr,
2476 const char *name,
2477 int shindex)
25dbc73a
AM
2478{
2479 asection *newsect;
2480 flagword flags;
d1c6de6f 2481
6dc132d9 2482 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 2483 return FALSE;
deaaf2f3 2484
25dbc73a
AM
2485 newsect = hdr->bfd_section;
2486 flags = bfd_get_section_flags (abfd, newsect);
2487 if (hdr->sh_flags & SHF_EXCLUDE)
2488 flags |= SEC_EXCLUDE;
9abc968f 2489
25dbc73a
AM
2490 if (hdr->sh_type == SHT_ORDERED)
2491 flags |= SEC_SORT_ENTRIES;
d1c6de6f 2492
25dbc73a
AM
2493 bfd_set_section_flags (abfd, newsect, flags);
2494 return TRUE;
2495}
2496
2497/* Set up any other section flags and such that may be necessary. */
2498
2499static bfd_boolean
2500ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2501 Elf_Internal_Shdr *shdr,
2502 asection *asect)
2503{
25dbc73a
AM
2504 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2505 shdr->sh_type = SHT_ORDERED;
2506
2507 return TRUE;
2508}
2509
2510/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2511 need to bump up the number of section headers. */
2512
2513static int
a6b96beb
AM
2514ppc_elf_additional_program_headers (bfd *abfd,
2515 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM
2516{
2517 asection *s;
2518 int ret = 0;
d1c6de6f 2519
25dbc73a
AM
2520 s = bfd_get_section_by_name (abfd, ".sbss2");
2521 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2522 ++ret;
d1c6de6f 2523
25dbc73a
AM
2524 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2525 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2526 ++ret;
deaaf2f3 2527
25dbc73a
AM
2528 return ret;
2529}
deaaf2f3 2530
68ffbac6 2531/* Modify the segment map for VLE executables. */
b9c361e0
JL
2532
2533bfd_boolean
2534ppc_elf_modify_segment_map (bfd *abfd,
2535 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2536{
2537 struct elf_segment_map *m, *n;
2538 bfd_size_type amt;
2539 unsigned int j, k;
2540 bfd_boolean sect0_vle, sectj_vle;
2541
2542 /* At this point in the link, output sections have already been sorted by
2543 LMA and assigned to segments. All that is left to do is to ensure
2544 there is no mixing of VLE & non-VLE sections in a text segment.
2545 If we find that case, we split the segment.
2546 We maintain the original output section order. */
2547
12bd6957 2548 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
b9c361e0
JL
2549 {
2550 if (m->count == 0)
2551 continue;
2552
94caa966 2553 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
b9c361e0
JL
2554 for (j = 1; j < m->count; ++j)
2555 {
94caa966
AM
2556 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2557
2558 if (sectj_vle != sect0_vle)
b9c361e0
JL
2559 break;
2560 }
2561 if (j >= m->count)
2562 continue;
2563
b9c361e0
JL
2564 /* sections 0..j-1 stay in this (current) segment,
2565 the remainder are put in a new segment.
2566 The scan resumes with the new segment. */
2567
2568 /* Fix the new segment. */
2569 amt = sizeof (struct elf_segment_map);
2570 amt += (m->count - j - 1) * sizeof (asection *);
2571 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2572 if (n == NULL)
2573 return FALSE;
2574
2575 n->p_type = PT_LOAD;
2576 n->p_flags = PF_X | PF_R;
2577 if (sectj_vle)
2578 n->p_flags |= PF_PPC_VLE;
2579 n->count = m->count - j;
2580 for (k = 0; k < n->count; ++k)
2581 {
2582 n->sections[k] = m->sections[j+k];
2583 m->sections[j+k] = NULL;
2584 }
2585 n->next = m->next;
2586 m->next = n;
2587
2588 /* Fix the current segment */
2589 m->count = j;
2590 }
2591
2592 return TRUE;
2593}
2594
25dbc73a
AM
2595/* Add extra PPC sections -- Note, for now, make .sbss2 and
2596 .PPC.EMB.sbss0 a normal section, and not a bss section so
2597 that the linker doesn't crater when trying to make more than
2598 2 sections. */
e656e369 2599
b35d266b 2600static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 2601{
14b57c7c
AM
2602 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2603 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2604 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2605 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2606 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2607 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2608 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2609 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2610 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2611 { NULL, 0, 0, 0, 0 }
7f4d3958
L
2612};
2613
551b43fd
AM
2614/* This is what we want for new plt/got. */
2615static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 2616 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM
2617
2618static const struct bfd_elf_special_section *
2619ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 2620{
b35d266b 2621 const struct bfd_elf_special_section *ssect;
551b43fd
AM
2622
2623 /* See if this is one of the special sections. */
2624 if (sec->name == NULL)
2625 return NULL;
2626
2627 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2628 sec->use_rela_p);
2629 if (ssect != NULL)
2630 {
2631 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2632 ssect = &ppc_alt_plt;
2633 return ssect;
2634 }
2635
2636 return _bfd_elf_get_sec_type_attr (abfd, sec);
2637}
25dbc73a
AM
2638\f
2639/* Very simple linked list structure for recording apuinfo values. */
2640typedef struct apuinfo_list
2641{
2642 struct apuinfo_list *next;
2643 unsigned long value;
2644}
2645apuinfo_list;
e656e369 2646
25dbc73a 2647static apuinfo_list *head;
f2faa800 2648static bfd_boolean apuinfo_set;
deaaf2f3 2649
25dbc73a
AM
2650static void
2651apuinfo_list_init (void)
2652{
2653 head = NULL;
f2faa800 2654 apuinfo_set = FALSE;
25dbc73a 2655}
9abc968f 2656
25dbc73a
AM
2657static void
2658apuinfo_list_add (unsigned long value)
2659{
2660 apuinfo_list *entry = head;
deaaf2f3 2661
25dbc73a
AM
2662 while (entry != NULL)
2663 {
2664 if (entry->value == value)
2665 return;
2666 entry = entry->next;
2667 }
b4a38de6 2668
25dbc73a
AM
2669 entry = bfd_malloc (sizeof (* entry));
2670 if (entry == NULL)
2671 return;
e656e369 2672
25dbc73a
AM
2673 entry->value = value;
2674 entry->next = head;
2675 head = entry;
2676}
9abc968f 2677
25dbc73a
AM
2678static unsigned
2679apuinfo_list_length (void)
2680{
2681 apuinfo_list *entry;
2682 unsigned long count;
9abc968f 2683
25dbc73a
AM
2684 for (entry = head, count = 0;
2685 entry;
2686 entry = entry->next)
2687 ++ count;
e656e369 2688
25dbc73a
AM
2689 return count;
2690}
eea6121a 2691
25dbc73a
AM
2692static inline unsigned long
2693apuinfo_list_element (unsigned long number)
2694{
2695 apuinfo_list * entry;
e656e369 2696
25dbc73a
AM
2697 for (entry = head;
2698 entry && number --;
2699 entry = entry->next)
2700 ;
252b5132 2701
25dbc73a
AM
2702 return entry ? entry->value : 0;
2703}
2704
2705static void
2706apuinfo_list_finish (void)
2707{
2708 apuinfo_list *entry;
2709
2710 for (entry = head; entry;)
252b5132 2711 {
25dbc73a
AM
2712 apuinfo_list *next = entry->next;
2713 free (entry);
2714 entry = next;
2715 }
9abc968f 2716
25dbc73a
AM
2717 head = NULL;
2718}
9abc968f 2719
25dbc73a
AM
2720/* Scan the input BFDs and create a linked list of
2721 the APUinfo values that will need to be emitted. */
9abc968f 2722
25dbc73a
AM
2723static void
2724ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2725{
2726 bfd *ibfd;
2727 asection *asec;
deddc40b
NS
2728 char *buffer = NULL;
2729 bfd_size_type largest_input_size = 0;
25dbc73a 2730 unsigned i;
25dbc73a
AM
2731 unsigned long length;
2732 const char *error_message = NULL;
9abc968f 2733
25dbc73a
AM
2734 if (link_info == NULL)
2735 return;
9abc968f 2736
25dbc73a 2737 apuinfo_list_init ();
252b5132 2738
25dbc73a 2739 /* Read in the input sections contents. */
c72f2fb2 2740 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
252b5132 2741 {
25dbc73a 2742 unsigned long datum;
252b5132 2743
25dbc73a
AM
2744 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2745 if (asec == NULL)
2746 continue;
252b5132 2747
deddc40b 2748 error_message = _("corrupt %s section in %B");
25dbc73a 2749 length = asec->size;
deddc40b
NS
2750 if (length < 20)
2751 goto fail;
2752
f2faa800 2753 apuinfo_set = TRUE;
deddc40b 2754 if (largest_input_size < asec->size)
25dbc73a 2755 {
deddc40b
NS
2756 if (buffer)
2757 free (buffer);
2758 largest_input_size = asec->size;
2759 buffer = bfd_malloc (largest_input_size);
2760 if (!buffer)
2761 return;
25dbc73a 2762 }
5b914448 2763
25dbc73a 2764 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
deddc40b 2765 || (bfd_bread (buffer, length, ibfd) != length))
25dbc73a
AM
2766 {
2767 error_message = _("unable to read in %s section from %B");
2768 goto fail;
2769 }
252b5132 2770
25dbc73a
AM
2771 /* Verify the contents of the header. Note - we have to
2772 extract the values this way in order to allow for a
2773 host whose endian-ness is different from the target. */
deddc40b 2774 datum = bfd_get_32 (ibfd, buffer);
25dbc73a
AM
2775 if (datum != sizeof APUINFO_LABEL)
2776 goto fail;
252b5132 2777
deddc40b 2778 datum = bfd_get_32 (ibfd, buffer + 8);
25dbc73a
AM
2779 if (datum != 0x2)
2780 goto fail;
252b5132 2781
deddc40b 2782 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
25dbc73a 2783 goto fail;
252b5132 2784
25dbc73a 2785 /* Get the number of bytes used for apuinfo entries. */
deddc40b 2786 datum = bfd_get_32 (ibfd, buffer + 4);
25dbc73a
AM
2787 if (datum + 20 != length)
2788 goto fail;
2789
25dbc73a
AM
2790 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2791 for (i = 0; i < datum; i += 4)
deddc40b 2792 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
252b5132
RH
2793 }
2794
25dbc73a 2795 error_message = NULL;
252b5132 2796
f2faa800 2797 if (apuinfo_set)
deddc40b 2798 {
f2faa800
NS
2799 /* Compute the size of the output section. */
2800 unsigned num_entries = apuinfo_list_length ();
5b914448 2801
deddc40b
NS
2802 /* Set the output section size, if it exists. */
2803 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
f2faa800 2804
deddc40b
NS
2805 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2806 {
2807 ibfd = abfd;
2808 error_message = _("warning: unable to set size of %s section in %B");
2809 }
2810 }
25dbc73a
AM
2811
2812 fail:
deddc40b
NS
2813 if (buffer)
2814 free (buffer);
25dbc73a
AM
2815
2816 if (error_message)
2817 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2818}
252b5132 2819
25dbc73a
AM
2820/* Prevent the output section from accumulating the input sections'
2821 contents. We have already stored this in our linked list structure. */
252b5132 2822
25dbc73a
AM
2823static bfd_boolean
2824ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2825 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM
2826 asection *asec,
2827 bfd_byte *contents ATTRIBUTE_UNUSED)
2828{
f2faa800 2829 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
252b5132
RH
2830}
2831
25dbc73a
AM
2832/* Finally we can generate the output section. */
2833
2834static void
2835ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2836{
25dbc73a
AM
2837 bfd_byte *buffer;
2838 asection *asec;
2839 unsigned i;
2840 unsigned num_entries;
2841 bfd_size_type length;
7619e7c7 2842
25dbc73a
AM
2843 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2844 if (asec == NULL)
2845 return;
2846
f2faa800 2847 if (!apuinfo_set)
25dbc73a
AM
2848 return;
2849
2850 length = asec->size;
2851 if (length < 20)
2852 return;
2853
2854 buffer = bfd_malloc (length);
2855 if (buffer == NULL)
7619e7c7 2856 {
25dbc73a
AM
2857 (*_bfd_error_handler)
2858 (_("failed to allocate space for new APUinfo section."));
2859 return;
7619e7c7 2860 }
7619e7c7 2861
25dbc73a
AM
2862 /* Create the apuinfo header. */
2863 num_entries = apuinfo_list_length ();
2864 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2865 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2866 bfd_put_32 (abfd, 0x2, buffer + 8);
2867 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2868
25dbc73a
AM
2869 length = 20;
2870 for (i = 0; i < num_entries; i++)
feee612b 2871 {
25dbc73a
AM
2872 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2873 length += 4;
feee612b 2874 }
feee612b 2875
25dbc73a
AM
2876 if (length != asec->size)
2877 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2878
25dbc73a
AM
2879 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2880 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2881
25dbc73a
AM
2882 free (buffer);
2883
2884 apuinfo_list_finish ();
252b5132 2885}
25dbc73a 2886\f
7382d32a 2887static bfd_boolean
c6dd29ce 2888is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
7382d32a 2889{
c6dd29ce 2890 bfd_byte buf[GLINK_ENTRY_SIZE];
7382d32a 2891
c6dd29ce 2892 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
7382d32a
AM
2893 return FALSE;
2894
c6dd29ce
AM
2895 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2896 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2897 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2898 && bfd_get_32 (abfd, buf + 12) == BCTR);
7382d32a
AM
2899}
2900
468392fb
AM
2901static bfd_boolean
2902section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2903{
2904 bfd_vma vma = *(bfd_vma *) ptr;
2905 return ((section->flags & SEC_ALLOC) != 0
2906 && section->vma <= vma
2907 && vma < section->vma + section->size);
2908}
2909
2910static long
2911ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2912 long dynsymcount, asymbol **dynsyms,
2913 asymbol **ret)
2914{
2915 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2916 asection *plt, *relplt, *dynamic, *glink;
2917 bfd_vma glink_vma = 0;
2918 bfd_vma resolv_vma = 0;
2919 bfd_vma stub_vma;
2920 asymbol *s;
2921 arelent *p;
2922 long count, i;
2923 size_t size;
2924 char *names;
2925 bfd_byte buf[4];
2926
2927 *ret = NULL;
2928
2929 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2930 return 0;
2931
2932 if (dynsymcount <= 0)
2933 return 0;
2934
2935 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2936 if (relplt == NULL)
2937 return 0;
2938
2939 plt = bfd_get_section_by_name (abfd, ".plt");
2940 if (plt == NULL)
2941 return 0;
2942
2943 /* Call common code to handle old-style executable PLTs. */
2944 if (elf_section_flags (plt) & SHF_EXECINSTR)
2945 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2946 dynsymcount, dynsyms, ret);
2947
2948 /* If this object was prelinked, the prelinker stored the address
2949 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2950 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2951 if (dynamic != NULL)
2952 {
2953 bfd_byte *dynbuf, *extdyn, *extdynend;
2954 size_t extdynsize;
2955 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2956
2957 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2958 return -1;
2959
2960 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2961 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2962
2963 extdyn = dynbuf;
2964 extdynend = extdyn + dynamic->size;
2965 for (; extdyn < extdynend; extdyn += extdynsize)
2966 {
2967 Elf_Internal_Dyn dyn;
2968 (*swap_dyn_in) (abfd, extdyn, &dyn);
2969
2970 if (dyn.d_tag == DT_NULL)
2971 break;
2972
2973 if (dyn.d_tag == DT_PPC_GOT)
2974 {
2975 unsigned int g_o_t = dyn.d_un.d_val;
2976 asection *got = bfd_get_section_by_name (abfd, ".got");
2977 if (got != NULL
2978 && bfd_get_section_contents (abfd, got, buf,
2979 g_o_t - got->vma + 4, 4))
2980 glink_vma = bfd_get_32 (abfd, buf);
2981 break;
2982 }
2983 }
2984 free (dynbuf);
2985 }
2986
2987 /* Otherwise we read the first plt entry. */
2988 if (glink_vma == 0)
2989 {
2990 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2991 glink_vma = bfd_get_32 (abfd, buf);
2992 }
2993
2994 if (glink_vma == 0)
2995 return 0;
2996
2997 /* The .glink section usually does not survive the final
2998 link; search for the section (usually .text) where the
2999 glink stubs now reside. */
3000 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3001 if (glink == NULL)
3002 return 0;
3003
3004 /* Determine glink PLT resolver by reading the relative branch
3005 from the first glink stub. */
3006 if (bfd_get_section_contents (abfd, glink, buf,
3007 glink_vma - glink->vma, 4))
3008 {
3009 unsigned int insn = bfd_get_32 (abfd, buf);
3010
3011 /* The first glink stub may either branch to the resolver ... */
3012 insn ^= B;
3013 if ((insn & ~0x3fffffc) == 0)
3014 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3015
3016 /* ... or fall through a bunch of NOPs. */
3017 else if ((insn ^ B ^ NOP) == 0)
3018 for (i = 4;
3019 bfd_get_section_contents (abfd, glink, buf,
3020 glink_vma - glink->vma + i, 4);
3021 i += 4)
3022 if (bfd_get_32 (abfd, buf) != NOP)
3023 {
3024 resolv_vma = glink_vma + i;
3025 break;
3026 }
3027 }
3028
7382d32a 3029 count = relplt->size / sizeof (Elf32_External_Rela);
7382d32a
AM
3030 /* If the stubs are those for -shared/-pie then we might have
3031 multiple stubs for each plt entry. If that is the case then
3032 there is no way to associate stubs with their plt entries short
3033 of figuring out the GOT pointer value used in the stub. */
c6dd29ce
AM
3034 if (!is_nonpic_glink_stub (abfd, glink,
3035 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
7382d32a
AM
3036 return 0;
3037
468392fb
AM
3038 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3039 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3040 return -1;
3041
468392fb
AM
3042 size = count * sizeof (asymbol);
3043 p = relplt->relocation;
3044 for (i = 0; i < count; i++, p++)
e054468f
AM
3045 {
3046 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3047 if (p->addend != 0)
3048 size += sizeof ("+0x") - 1 + 8;
3049 }
468392fb
AM
3050
3051 size += sizeof (asymbol) + sizeof ("__glink");
3052
3053 if (resolv_vma)
3054 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3055
3056 s = *ret = bfd_malloc (size);
3057 if (s == NULL)
3058 return -1;
3059
1079403c 3060 stub_vma = glink_vma;
468392fb 3061 names = (char *) (s + count + 1 + (resolv_vma != 0));
1079403c
AM
3062 p = relplt->relocation + count - 1;
3063 for (i = 0; i < count; i++)
468392fb
AM
3064 {
3065 size_t len;
3066
3067 *s = **p->sym_ptr_ptr;
3068 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3069 we are defining a symbol, ensure one of them is set. */
3070 if ((s->flags & BSF_LOCAL) == 0)
3071 s->flags |= BSF_GLOBAL;
6ba2a415 3072 s->flags |= BSF_SYNTHETIC;
468392fb 3073 s->section = glink;
1079403c
AM
3074 stub_vma -= 16;
3075 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3076 stub_vma -= 32;
468392fb
AM
3077 s->value = stub_vma - glink->vma;
3078 s->name = names;
3079 s->udata.p = NULL;
3080 len = strlen ((*p->sym_ptr_ptr)->name);
3081 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3082 names += len;
e054468f
AM
3083 if (p->addend != 0)
3084 {
3085 memcpy (names, "+0x", sizeof ("+0x") - 1);
3086 names += sizeof ("+0x") - 1;
3087 bfd_sprintf_vma (abfd, names, p->addend);
3088 names += strlen (names);
3089 }
468392fb
AM
3090 memcpy (names, "@plt", sizeof ("@plt"));
3091 names += sizeof ("@plt");
3092 ++s;
1079403c 3093 --p;
468392fb
AM
3094 }
3095
3096 /* Add a symbol at the start of the glink branch table. */
86a4952b 3097 memset (s, 0, sizeof *s);
468392fb 3098 s->the_bfd = abfd;
6ba2a415 3099 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3100 s->section = glink;
3101 s->value = glink_vma - glink->vma;
3102 s->name = names;
3103 memcpy (names, "__glink", sizeof ("__glink"));
3104 names += sizeof ("__glink");
3105 s++;
3106 count++;
3107
3108 if (resolv_vma)
3109 {
3110 /* Add a symbol for the glink PLT resolver. */
86a4952b 3111 memset (s, 0, sizeof *s);
468392fb 3112 s->the_bfd = abfd;
6ba2a415 3113 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3114 s->section = glink;
3115 s->value = resolv_vma - glink->vma;
3116 s->name = names;
3117 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3118 names += sizeof ("__glink_PLTresolve");
3119 s++;
3120 count++;
3121 }
3122
3123 return count;
3124}
3125\f
25dbc73a
AM
3126/* The following functions are specific to the ELF linker, while
3127 functions above are used generally. They appear in this file more
3128 or less in the order in which they are called. eg.
3129 ppc_elf_check_relocs is called early in the link process,
3130 ppc_elf_finish_dynamic_sections is one of the last functions
3131 called. */
252b5132 3132
a6aa5195 3133/* Track PLT entries needed for a given symbol. We might need more
a877a2b6 3134 than one glink entry per symbol when generating a pic binary. */
a6aa5195
AM
3135struct plt_entry
3136{
3137 struct plt_entry *next;
3138
3139 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3140 This field stores the offset into .got2 used to initialise the
a877a2b6
AM
3141 GOT pointer reg. It will always be at least 32768. (Current
3142 gcc always uses an offset of 32768, but ld -r will pack .got2
3143 sections together resulting in larger offsets). */
a6aa5195
AM
3144 bfd_vma addend;
3145
3146 /* The .got2 section. */
3147 asection *sec;
3148
3149 /* PLT refcount or offset. */
3150 union
3151 {
3152 bfd_signed_vma refcount;
3153 bfd_vma offset;
3154 } plt;
3155
3156 /* .glink stub offset. */
3157 bfd_vma glink_offset;
3158};
3159
1d483afe 3160/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM
3161 selects those that must be copied when linking a shared library,
3162 even when the symbol is local. */
252b5132 3163
1d483afe
AM
3164static int
3165must_be_dyn_reloc (struct bfd_link_info *info,
3166 enum elf_ppc_reloc_type r_type)
3167{
3168 switch (r_type)
3169 {
3170 default:
3171 return 1;
3172
3173 case R_PPC_REL24:
3174 case R_PPC_REL14:
3175 case R_PPC_REL14_BRTAKEN:
3176 case R_PPC_REL14_BRNTAKEN:
3177 case R_PPC_REL32:
3178 return 0;
3179
3180 case R_PPC_TPREL32:
3181 case R_PPC_TPREL16:
3182 case R_PPC_TPREL16_LO:
3183 case R_PPC_TPREL16_HI:
3184 case R_PPC_TPREL16_HA:
0e1862bb 3185 return !bfd_link_executable (info);
1d483afe
AM
3186 }
3187}
252b5132 3188
25dbc73a
AM
3189/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3190 copying dynamic variables from a shared lib into an app's dynbss
3191 section, and instead use a dynamic relocation to point into the
3192 shared lib. */
3193#define ELIMINATE_COPY_RELOCS 1
252b5132 3194
f95f8542
AM
3195/* Used to track dynamic relocations for local symbols. */
3196struct ppc_dyn_relocs
3197{
3198 struct ppc_dyn_relocs *next;
3199
3200 /* The input section of the reloc. */
3201 asection *sec;
3202
3203 /* Total number of relocs copied for the input section. */
3204 unsigned int count : 31;
3205
3206 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3207 unsigned int ifunc : 1;
3208};
3209
25dbc73a 3210/* PPC ELF linker hash entry. */
252b5132 3211
25dbc73a
AM
3212struct ppc_elf_link_hash_entry
3213{
3214 struct elf_link_hash_entry elf;
252b5132 3215
25dbc73a
AM
3216 /* If this symbol is used in the linker created sections, the processor
3217 specific backend uses this field to map the field into the offset
3218 from the beginning of the section. */
3219 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 3220
25dbc73a 3221 /* Track dynamic relocs copied for this symbol. */
6061a67d 3222 struct elf_dyn_relocs *dyn_relocs;
252b5132 3223
25dbc73a
AM
3224 /* Contexts in which symbol is used in the GOT (or TOC).
3225 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3226 corresponding relocs are encountered during check_relocs.
3227 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3228 indicate the corresponding GOT entry type is not needed. */
3229#define TLS_GD 1 /* GD reloc. */
3230#define TLS_LD 2 /* LD reloc. */
3231#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3232#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3233#define TLS_TLS 16 /* Any TLS reloc. */
3234#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
e054468f 3235#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
25dbc73a 3236 char tls_mask;
4dc4a9a5
DJ
3237
3238 /* Nonzero if we have seen a small data relocation referring to this
3239 symbol. */
d3e454b9
AM
3240 unsigned char has_sda_refs : 1;
3241
3242 /* Flag use of given relocations. */
3243 unsigned char has_addr16_ha : 1;
3244 unsigned char has_addr16_lo : 1;
25dbc73a 3245};
252b5132 3246
25dbc73a
AM
3247#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3248
3249/* PPC ELF linker hash table. */
3250
3251struct ppc_elf_link_hash_table
3252{
3253 struct elf_link_hash_table elf;
3254
5446cbdf
AM
3255 /* Various options passed from the linker. */
3256 struct ppc_elf_params *params;
3257
25dbc73a
AM
3258 /* Short-cuts to get to dynamic linker sections. */
3259 asection *got;
3260 asection *relgot;
d7128ce4 3261 asection *glink;
25dbc73a
AM
3262 asection *plt;
3263 asection *relplt;
e054468f
AM
3264 asection *iplt;
3265 asection *reliplt;
25dbc73a
AM
3266 asection *dynbss;
3267 asection *relbss;
3268 asection *dynsbss;
3269 asection *relsbss;
c9a2f333 3270 elf_linker_section_t sdata[2];
25dbc73a 3271 asection *sbss;
6177242a 3272 asection *glink_eh_frame;
25dbc73a 3273
016687f8
AM
3274 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3275 asection *srelplt2;
3276
3277 /* The .got.plt section (VxWorks only)*/
3278 asection *sgotplt;
3279
1d483afe 3280 /* Shortcut to __tls_get_addr. */
25dbc73a 3281 struct elf_link_hash_entry *tls_get_addr;
252b5132 3282
016687f8
AM
3283 /* The bfd that forced an old-style PLT. */
3284 bfd *old_bfd;
5b914448 3285
25dbc73a
AM
3286 /* TLS local dynamic got entry handling. */
3287 union {
3288 bfd_signed_vma refcount;
3289 bfd_vma offset;
3290 } tlsld_got;
252b5132 3291
c6dd29ce 3292 /* Offset of branch table to PltResolve function in glink. */
d7128ce4
AM
3293 bfd_vma glink_pltresolve;
3294
3b36f7e6
AM
3295 /* Size of reserved GOT entries. */
3296 unsigned int got_header_size;
3297 /* Non-zero if allocating the header left a gap. */
3298 unsigned int got_gap;
3299
4a3dc543
RS
3300 /* The type of PLT we have chosen to use. */
3301 enum ppc_elf_plt_type plt_type;
3302
9d8504b1 3303 /* True if the target system is VxWorks. */
016687f8 3304 unsigned int is_vxworks:1;
9d8504b1
PB
3305
3306 /* The size of PLT entries. */
3307 int plt_entry_size;
3308 /* The distance between adjacent PLT slots. */
3309 int plt_slot_size;
3310 /* The size of the first PLT entry. */
3311 int plt_initial_entry_size;
016687f8 3312
87d72d41
AM
3313 /* Small local sym cache. */
3314 struct sym_cache sym_cache;
25dbc73a 3315};
252b5132 3316
94caa966
AM
3317/* Rename some of the generic section flags to better document how they
3318 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3319
3320/* Nonzero if this section has TLS related relocations. */
3321#define has_tls_reloc sec_flg0
3322
3323/* Nonzero if this section has a call to __tls_get_addr. */
3324#define has_tls_get_addr_call sec_flg1
3325
25dbc73a 3326/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 3327
25dbc73a 3328#define ppc_elf_hash_table(p) \
4dfe6ac6
NC
3329 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3330 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
252b5132 3331
25dbc73a 3332/* Create an entry in a PPC ELF linker hash table. */
252b5132 3333
25dbc73a
AM
3334static struct bfd_hash_entry *
3335ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3336 struct bfd_hash_table *table,
3337 const char *string)
252b5132 3338{
25dbc73a
AM
3339 /* Allocate the structure if it has not already been allocated by a
3340 subclass. */
3341 if (entry == NULL)
3342 {
3343 entry = bfd_hash_allocate (table,
3344 sizeof (struct ppc_elf_link_hash_entry));
3345 if (entry == NULL)
3346 return entry;
3347 }
252b5132 3348
25dbc73a
AM
3349 /* Call the allocation method of the superclass. */
3350 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3351 if (entry != NULL)
3352 {
3353 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3354 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3355 ppc_elf_hash_entry (entry)->tls_mask = 0;
5240d94d 3356 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
25dbc73a 3357 }
252b5132 3358
25dbc73a 3359 return entry;
252b5132 3360}
3dab13f6 3361
25dbc73a 3362/* Create a PPC ELF linker hash table. */
3dab13f6 3363
25dbc73a
AM
3364static struct bfd_link_hash_table *
3365ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 3366{
25dbc73a 3367 struct ppc_elf_link_hash_table *ret;
76e7a751
AM
3368 static struct ppc_elf_params default_params
3369 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0 };
3dab13f6 3370
25dbc73a
AM
3371 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3372 if (ret == NULL)
3373 return NULL;
3dab13f6 3374
66eb6687
AM
3375 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3376 ppc_elf_link_hash_newfunc,
4dfe6ac6
NC
3377 sizeof (struct ppc_elf_link_hash_entry),
3378 PPC32_ELF_DATA))
3dab13f6 3379 {
25dbc73a
AM
3380 free (ret);
3381 return NULL;
3382 }
58111eb7 3383
a6aa5195
AM
3384 ret->elf.init_plt_refcount.refcount = 0;
3385 ret->elf.init_plt_refcount.glist = NULL;
3386 ret->elf.init_plt_offset.offset = 0;
3387 ret->elf.init_plt_offset.glist = NULL;
3388
db434ba0
AM
3389 ret->params = &default_params;
3390
c9a2f333
AM
3391 ret->sdata[0].name = ".sdata";
3392 ret->sdata[0].sym_name = "_SDA_BASE_";
3393 ret->sdata[0].bss_name = ".sbss";
3394
3395 ret->sdata[1].name = ".sdata2";
3396 ret->sdata[1].sym_name = "_SDA2_BASE_";
3397 ret->sdata[1].bss_name = ".sbss2";
3398
9d8504b1
PB
3399 ret->plt_entry_size = 12;
3400 ret->plt_slot_size = 8;
3401 ret->plt_initial_entry_size = 72;
9d8504b1 3402
25dbc73a
AM
3403 return &ret->elf.root;
3404}
3dab13f6 3405
5446cbdf
AM
3406/* Hook linker params into hash table. */
3407
3408void
3409ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3410{
3411 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3412
3413 if (htab)
3414 htab->params = params;
76e7a751 3415 params->pagesize_p2 = bfd_log2 (params->pagesize);
5446cbdf
AM
3416}
3417
9d8504b1 3418/* Create .got and the related sections. */
3dab13f6 3419
25dbc73a
AM
3420static bfd_boolean
3421ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3422{
3423 struct ppc_elf_link_hash_table *htab;
3424 asection *s;
3425 flagword flags;
3dab13f6 3426
25dbc73a
AM
3427 if (!_bfd_elf_create_got_section (abfd, info))
3428 return FALSE;
3dab13f6 3429
25dbc73a 3430 htab = ppc_elf_hash_table (info);
3d4d4302 3431 htab->got = s = bfd_get_linker_section (abfd, ".got");
25dbc73a
AM
3432 if (s == NULL)
3433 abort ();
3dab13f6 3434
9d8504b1
PB
3435 if (htab->is_vxworks)
3436 {
3d4d4302 3437 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
9d8504b1
PB
3438 if (!htab->sgotplt)
3439 abort ();
3440 }
3441 else
3442 {
3443 /* The powerpc .got has a blrl instruction in it. Mark it
3444 executable. */
3445 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3446 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3447 if (!bfd_set_section_flags (abfd, s, flags))
3448 return FALSE;
3449 }
3dab13f6 3450
3d4d4302 3451 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
64e77c6d
L
3452 if (!htab->relgot)
3453 abort ();
3dab13f6 3454
25dbc73a
AM
3455 return TRUE;
3456}
3dab13f6 3457
93d1b056
AM
3458/* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3459 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3460 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3461
3462static bfd_boolean
3463ppc_elf_create_linker_section (bfd *abfd,
3464 struct bfd_link_info *info,
3465 flagword flags,
3466 elf_linker_section_t *lsect)
3467{
3468 asection *s;
3469
3470 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3471 | SEC_LINKER_CREATED);
3472
3473 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3474 if (s == NULL)
3475 return FALSE;
3476 lsect->section = s;
3477
3478 /* Define the sym on the first section of this name. */
3479 s = bfd_get_section_by_name (abfd, lsect->name);
3480
3481 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3482 if (lsect->sym == NULL)
3483 return FALSE;
3484 lsect->sym->root.u.def.value = 0x8000;
3485 return TRUE;
3486}
3487
e054468f
AM
3488static bfd_boolean
3489ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3490{
3491 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3492 asection *s;
3493 flagword flags;
3494
3495 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3496 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3497 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3498 htab->glink = s;
3499 if (s == NULL
5446cbdf
AM
3500 || !bfd_set_section_alignment (abfd, s,
3501 htab->params->ppc476_workaround ? 6 : 4))
e054468f
AM
3502 return FALSE;
3503
6177242a
AM
3504 if (!info->no_ld_generated_unwind_info)
3505 {
3506 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3507 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3508 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3509 htab->glink_eh_frame = s;
3510 if (s == NULL
3511 || !bfd_set_section_alignment (abfd, s, 2))
3512 return FALSE;
3513 }
3514
e054468f
AM
3515 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3516 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3517 htab->iplt = s;
3518 if (s == NULL
3519 || !bfd_set_section_alignment (abfd, s, 4))
3520 return FALSE;
3521
3522 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3523 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3524 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
e054468f
AM
3525 htab->reliplt = s;
3526 if (s == NULL
3527 || ! bfd_set_section_alignment (abfd, s, 2))
3528 return FALSE;
93d1b056
AM
3529
3530 if (!ppc_elf_create_linker_section (abfd, info, 0,
3531 &htab->sdata[0]))
3532 return FALSE;
3533
3534 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3535 &htab->sdata[1]))
3536 return FALSE;
3537
e054468f
AM
3538 return TRUE;
3539}
3540
25dbc73a
AM
3541/* We have to create .dynsbss and .rela.sbss here so that they get mapped
3542 to output sections (just like _bfd_elf_create_dynamic_sections has
3543 to create .dynbss and .rela.bss). */
3dab13f6 3544
25dbc73a
AM
3545static bfd_boolean
3546ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3547{
3548 struct ppc_elf_link_hash_table *htab;
3549 asection *s;
3550 flagword flags;
3dab13f6 3551
25dbc73a 3552 htab = ppc_elf_hash_table (info);
3dab13f6 3553
25dbc73a
AM
3554 if (htab->got == NULL
3555 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
3556 return FALSE;
3557
25dbc73a
AM
3558 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3559 return FALSE;
3dab13f6 3560
e054468f
AM
3561 if (htab->glink == NULL
3562 && !ppc_elf_create_glink (abfd, info))
d7128ce4 3563 return FALSE;
3dab13f6 3564
3d4d4302 3565 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
14b2f831
AM
3566 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3567 SEC_ALLOC | SEC_LINKER_CREATED);
3b36f7e6 3568 htab->dynsbss = s;
3496cb2a 3569 if (s == NULL)
25dbc73a 3570 return FALSE;
3dab13f6 3571
0e1862bb 3572 if (! bfd_link_pic (info))
25dbc73a 3573 {
3d4d4302 3574 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
e054468f
AM
3575 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3576 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3577 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 3578 htab->relsbss = s;
25dbc73a 3579 if (s == NULL
25dbc73a
AM
3580 || ! bfd_set_section_alignment (abfd, s, 2))
3581 return FALSE;
3582 }
3dab13f6 3583
711de32c
RS
3584 if (htab->is_vxworks
3585 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3586 return FALSE;
9d8504b1 3587
3d4d4302
AM
3588 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3589 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
25dbc73a
AM
3590 if (s == NULL)
3591 abort ();
3dab13f6 3592
3b36f7e6 3593 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
3594 if (htab->plt_type == PLT_VXWORKS)
3595 /* The VxWorks PLT is a loaded section with contents. */
3596 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
3597 return bfd_set_section_flags (abfd, s, flags);
3598}
3dab13f6 3599
25dbc73a 3600/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 3601
25dbc73a 3602static void
fcfa13d2 3603ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
3604 struct elf_link_hash_entry *dir,
3605 struct elf_link_hash_entry *ind)
3606{
3607 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 3608
25dbc73a
AM
3609 edir = (struct ppc_elf_link_hash_entry *) dir;
3610 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 3611
c79d6685
AM
3612 edir->tls_mask |= eind->tls_mask;
3613 edir->has_sda_refs |= eind->has_sda_refs;
3614
3615 /* If called to transfer flags for a weakdef during processing
3616 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3617 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3618 if (!(ELIMINATE_COPY_RELOCS
3619 && eind->elf.root.type != bfd_link_hash_indirect
3620 && edir->elf.dynamic_adjusted))
3621 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3622
3623 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3624 edir->elf.ref_regular |= eind->elf.ref_regular;
3625 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3626 edir->elf.needs_plt |= eind->elf.needs_plt;
3627 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3628
25dbc73a
AM
3629 if (eind->dyn_relocs != NULL)
3630 {
3631 if (edir->dyn_relocs != NULL)
3dab13f6 3632 {
6061a67d
AM
3633 struct elf_dyn_relocs **pp;
3634 struct elf_dyn_relocs *p;
3dab13f6 3635
fcfa13d2 3636 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
3637 list. Merge any entries against the same section. */
3638 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 3639 {
6061a67d 3640 struct elf_dyn_relocs *q;
25dbc73a
AM
3641
3642 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3643 if (q->sec == p->sec)
3644 {
3645 q->pc_count += p->pc_count;
3646 q->count += p->count;
3647 *pp = p->next;
3648 break;
3649 }
3650 if (q == NULL)
3651 pp = &p->next;
3dab13f6 3652 }
25dbc73a 3653 *pp = edir->dyn_relocs;
3dab13f6 3654 }
25dbc73a
AM
3655
3656 edir->dyn_relocs = eind->dyn_relocs;
3657 eind->dyn_relocs = NULL;
3dab13f6 3658 }
3dab13f6 3659
68ba6d40
AM
3660 /* If we were called to copy over info for a weak sym, that's all.
3661 You might think dyn_relocs need not be copied over; After all,
3662 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 3663 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM
3664 code in ppc_elf_adjust_dynamic_symbol needs to check for
3665 dyn_relocs in read-only sections, and it does so on what is the
3666 DIR sym here. */
3667 if (eind->elf.root.type != bfd_link_hash_indirect)
3668 return;
3669
a6aa5195
AM
3670 /* Copy over the GOT refcount entries that we may have already seen to
3671 the symbol which just became indirect. */
fcfa13d2
AM
3672 edir->elf.got.refcount += eind->elf.got.refcount;
3673 eind->elf.got.refcount = 0;
a6aa5195
AM
3674
3675 /* And plt entries. */
3676 if (eind->elf.plt.plist != NULL)
3677 {
3678 if (edir->elf.plt.plist != NULL)
3679 {
3680 struct plt_entry **entp;
3681 struct plt_entry *ent;
3682
3683 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3684 {
3685 struct plt_entry *dent;
3686
3687 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3688 if (dent->sec == ent->sec && dent->addend == ent->addend)
3689 {
3690 dent->plt.refcount += ent->plt.refcount;
3691 *entp = ent->next;
3692 break;
3693 }
3694 if (dent == NULL)
3695 entp = &ent->next;
3696 }
3697 *entp = edir->elf.plt.plist;
3698 }
3699
3700 edir->elf.plt.plist = eind->elf.plt.plist;
3701 eind->elf.plt.plist = NULL;
3702 }
3703
fcfa13d2 3704 if (eind->elf.dynindx != -1)
25dbc73a 3705 {
fcfa13d2
AM
3706 if (edir->elf.dynindx != -1)
3707 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3708 edir->elf.dynstr_index);
a6aa5195
AM
3709 edir->elf.dynindx = eind->elf.dynindx;
3710 edir->elf.dynstr_index = eind->elf.dynstr_index;
3711 eind->elf.dynindx = -1;
3712 eind->elf.dynstr_index = 0;
25dbc73a 3713 }
25dbc73a 3714}
3dab13f6 3715
25dbc73a
AM
3716/* Hook called by the linker routine which adds symbols from an object
3717 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3718
25dbc73a
AM
3719static bfd_boolean
3720ppc_elf_add_symbol_hook (bfd *abfd,
3721 struct bfd_link_info *info,
3722 Elf_Internal_Sym *sym,
3723 const char **namep ATTRIBUTE_UNUSED,
3724 flagword *flagsp ATTRIBUTE_UNUSED,
3725 asection **secp,
3726 bfd_vma *valp)
3727{
3728 if (sym->st_shndx == SHN_COMMON
0e1862bb 3729 && !bfd_link_relocatable (info)
0c8d6e5c
AM
3730 && is_ppc_elf (info->output_bfd)
3731 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
3732 {
3733 /* Common symbols less than or equal to -G nn bytes are automatically
3734 put into .sbss. */
3735 struct ppc_elf_link_hash_table *htab;
3dab13f6 3736
25dbc73a
AM
3737 htab = ppc_elf_hash_table (info);
3738 if (htab->sbss == NULL)
3739 {
644285ef 3740 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3741
644285ef
AM
3742 if (!htab->elf.dynobj)
3743 htab->elf.dynobj = abfd;
3744
3496cb2a
L
3745 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3746 ".sbss",
3747 flags);
3748 if (htab->sbss == NULL)
25dbc73a 3749 return FALSE;
3dab13f6 3750 }
3dab13f6 3751
25dbc73a
AM
3752 *secp = htab->sbss;
3753 *valp = sym->st_size;
3754 }
3dab13f6 3755
a43942db 3756 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
f1885d1e
AM
3757 && (abfd->flags & DYNAMIC) == 0
3758 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
a43942db 3759 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
e054468f 3760
25dbc73a 3761 return TRUE;
3dab13f6
AM
3762}
3763\f
25dbc73a
AM
3764/* Find a linker generated pointer with a given addend and type. */
3765
3766static elf_linker_section_pointers_t *
3767elf_find_pointer_linker_section
3768 (elf_linker_section_pointers_t *linker_pointers,
3769 bfd_vma addend,
3770 elf_linker_section_t *lsect)
252b5132 3771{
25dbc73a
AM
3772 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3773 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3774 return linker_pointers;
252b5132 3775
25dbc73a
AM
3776 return NULL;
3777}
3778
3779/* Allocate a pointer to live in a linker created section. */
3780
3781static bfd_boolean
93d1b056
AM
3782elf_allocate_pointer_linker_section (bfd *abfd,
3783 elf_linker_section_t *lsect,
3784 struct elf_link_hash_entry *h,
3785 const Elf_Internal_Rela *rel)
25dbc73a
AM
3786{
3787 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3788 elf_linker_section_pointers_t *linker_section_ptr;
3789 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3790 bfd_size_type amt;
3791
3792 BFD_ASSERT (lsect != NULL);
3793
3794 /* Is this a global symbol? */
3795 if (h != NULL)
3796 {
3797 struct ppc_elf_link_hash_entry *eh;
3798
3799 /* Has this symbol already been allocated? If so, our work is done. */
3800 eh = (struct ppc_elf_link_hash_entry *) h;
3801 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3802 rel->r_addend,
3803 lsect))
3804 return TRUE;
3805
3806 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3807 }
3808 else
3809 {
0c8d6e5c 3810 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3811
25dbc73a
AM
3812 /* Allocation of a pointer to a local symbol. */
3813 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3814
3815 /* Allocate a table to hold the local symbols if first time. */
3816 if (!ptr)
3817 {
0ffa91dd 3818 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3819
3820 amt = num_symbols;
3821 amt *= sizeof (elf_linker_section_pointers_t *);
3822 ptr = bfd_zalloc (abfd, amt);
3823
3824 if (!ptr)
3825 return FALSE;
3826
3827 elf_local_ptr_offsets (abfd) = ptr;
3828 }
3829
3830 /* Has this symbol already been allocated? If so, our work is done. */
3831 if (elf_find_pointer_linker_section (ptr[r_symndx],
3832 rel->r_addend,
3833 lsect))
3834 return TRUE;
252b5132 3835
25dbc73a 3836 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3837 }
41fcb14e 3838
25dbc73a
AM
3839 /* Allocate space for a pointer in the linker section, and allocate
3840 a new pointer record from internal memory. */
3841 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3842 amt = sizeof (elf_linker_section_pointers_t);
3843 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3844
25dbc73a 3845 if (!linker_section_ptr)
7619e7c7 3846 return FALSE;
41fcb14e 3847
25dbc73a
AM
3848 linker_section_ptr->next = *ptr_linker_section_ptr;
3849 linker_section_ptr->addend = rel->r_addend;
3850 linker_section_ptr->lsect = lsect;
25dbc73a 3851 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3852
93d1b056
AM
3853 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3854 return FALSE;
25dbc73a
AM
3855 linker_section_ptr->offset = lsect->section->size;
3856 lsect->section->size += 4;
7619e7c7 3857
25dbc73a
AM
3858#ifdef DEBUG
3859 fprintf (stderr,
3860 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3861 lsect->name, (long) linker_section_ptr->offset,
3862 (long) lsect->section->size);
3863#endif
7619e7c7
AM
3864
3865 return TRUE;
41fcb14e
AM
3866}
3867
e054468f 3868static struct plt_entry **
25dbc73a
AM
3869update_local_sym_info (bfd *abfd,
3870 Elf_Internal_Shdr *symtab_hdr,
3871 unsigned long r_symndx,
3872 int tls_type)
252b5132 3873{
25dbc73a 3874 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
e054468f 3875 struct plt_entry **local_plt;
25dbc73a 3876 char *local_got_tls_masks;
252b5132 3877
25dbc73a 3878 if (local_got_refcounts == NULL)
252b5132 3879 {
25dbc73a
AM
3880 bfd_size_type size = symtab_hdr->sh_info;
3881
e054468f
AM
3882 size *= (sizeof (*local_got_refcounts)
3883 + sizeof (*local_plt)
3884 + sizeof (*local_got_tls_masks));
25dbc73a
AM
3885 local_got_refcounts = bfd_zalloc (abfd, size);
3886 if (local_got_refcounts == NULL)
e054468f 3887 return NULL;
25dbc73a 3888 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3889 }
41fcb14e 3890
e054468f
AM
3891 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3892 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
25dbc73a 3893 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
3894 if (tls_type != PLT_IFUNC)
3895 local_got_refcounts[r_symndx] += 1;
3896 return local_plt + r_symndx;
25dbc73a 3897}
41fcb14e 3898
a6aa5195 3899static bfd_boolean
3ec01793 3900update_plt_info (bfd *abfd, struct plt_entry **plist,
a6aa5195
AM
3901 asection *sec, bfd_vma addend)
3902{
3903 struct plt_entry *ent;
3904
32af9f6e
AM
3905 if (addend < 32768)
3906 sec = NULL;
3ec01793 3907 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3908 if (ent->sec == sec && ent->addend == addend)
3909 break;
3910 if (ent == NULL)
3911 {
3912 bfd_size_type amt = sizeof (*ent);
3913 ent = bfd_alloc (abfd, amt);
3914 if (ent == NULL)
3915 return FALSE;
3ec01793 3916 ent->next = *plist;
a6aa5195
AM
3917 ent->sec = sec;
3918 ent->addend = addend;
3919 ent->plt.refcount = 0;
3ec01793 3920 *plist = ent;
a6aa5195
AM
3921 }
3922 ent->plt.refcount += 1;
3923 return TRUE;
3924}
3925
3926static struct plt_entry *
3ec01793 3927find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
a6aa5195
AM
3928{
3929 struct plt_entry *ent;
3930
3931 if (addend < 32768)
3932 sec = NULL;
3ec01793 3933 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3934 if (ent->sec == sec && ent->addend == addend)
3935 break;
3936 return ent;
3937}
3938
e054468f
AM
3939static bfd_boolean
3940is_branch_reloc (enum elf_ppc_reloc_type r_type)
3941{
3942 return (r_type == R_PPC_PLTREL24
3943 || r_type == R_PPC_LOCAL24PC
3944 || r_type == R_PPC_REL24
3945 || r_type == R_PPC_REL14
3946 || r_type == R_PPC_REL14_BRTAKEN
3947 || r_type == R_PPC_REL14_BRNTAKEN
3948 || r_type == R_PPC_ADDR24
3949 || r_type == R_PPC_ADDR14
3950 || r_type == R_PPC_ADDR14_BRTAKEN
dfdaec14
AJ
3951 || r_type == R_PPC_ADDR14_BRNTAKEN
3952 || r_type == R_PPC_VLE_REL24);
e054468f
AM
3953}
3954
25dbc73a
AM
3955static void
3956bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3957{
3958 (*_bfd_error_handler)
3959 (_("%B: relocation %s cannot be used when making a shared object"),
3960 abfd,
3961 ppc_elf_howto_table[r_type]->name);
3962 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3963}
3964
25dbc73a
AM
3965/* Look through the relocs for a section during the first phase, and
3966 allocate space in the global offset table or procedure linkage
3967 table. */
252b5132 3968
b34976b6 3969static bfd_boolean
25dbc73a
AM
3970ppc_elf_check_relocs (bfd *abfd,
3971 struct bfd_link_info *info,
3972 asection *sec,
3973 const Elf_Internal_Rela *relocs)
252b5132 3974{
7619e7c7 3975 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3976 Elf_Internal_Shdr *symtab_hdr;
3977 struct elf_link_hash_entry **sym_hashes;
3978 const Elf_Internal_Rela *rel;
3979 const Elf_Internal_Rela *rel_end;
a6aa5195 3980 asection *got2, *sreloc;
727fc41e 3981 struct elf_link_hash_entry *tga;
25dbc73a 3982
0e1862bb 3983 if (bfd_link_relocatable (info))
25dbc73a 3984 return TRUE;
252b5132 3985
c87b5a93
AM
3986 /* Don't do anything special with non-loaded, non-alloced sections.
3987 In particular, any relocs in such sections should not affect GOT
3988 and PLT reference counting (ie. we don't allow them to create GOT
3989 or PLT entries), there's no possibility or desire to optimize TLS
3990 relocs, and there's not much point in propagating relocs to shared
3991 libs that the dynamic linker won't relocate. */
3992 if ((sec->flags & SEC_ALLOC) == 0)
3993 return TRUE;
3994
252b5132 3995#ifdef DEBUG
25dbc73a
AM
3996 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3997 sec, abfd);
252b5132
RH
3998#endif
3999
0c8d6e5c 4000 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 4001
25dbc73a
AM
4002 /* Initialize howto table if not already done. */
4003 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4004 ppc_elf_howto_init ();
4005
7619e7c7 4006 htab = ppc_elf_hash_table (info);
25f23106
AM
4007 if (htab->glink == NULL)
4008 {
4009 if (htab->elf.dynobj == NULL)
4010 htab->elf.dynobj = abfd;
4011 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4012 return FALSE;
4013 }
727fc41e
AM
4014 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4015 FALSE, FALSE, TRUE);
0ffa91dd 4016 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 4017 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 4018 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4019 sreloc = NULL;
4020
4021 rel_end = relocs + sec->reloc_count;
4022 for (rel = relocs; rel < rel_end; rel++)
4023 {
4024 unsigned long r_symndx;
4025 enum elf_ppc_reloc_type r_type;
4026 struct elf_link_hash_entry *h;
727fc41e 4027 int tls_type;
cbf95972 4028 struct plt_entry **ifunc;
25dbc73a
AM
4029
4030 r_symndx = ELF32_R_SYM (rel->r_info);
4031 if (r_symndx < symtab_hdr->sh_info)
4032 h = NULL;
4033 else
973a3492
L
4034 {
4035 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4036 while (h->root.type == bfd_link_hash_indirect
4037 || h->root.type == bfd_link_hash_warning)
4038 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM
4039
4040 /* PR15323, ref flags aren't set for references in the same
4041 object. */
4042 h->root.non_ir_ref = 1;
973a3492 4043 }
25dbc73a
AM
4044
4045 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4046 This shows up in particular in an R_PPC_ADDR32 in the eabi
4047 startup code. */
3b36f7e6
AM
4048 if (h != NULL
4049 && htab->got == NULL
4050 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 4051 {
3b36f7e6
AM
4052 if (htab->elf.dynobj == NULL)
4053 htab->elf.dynobj = abfd;
4054 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4055 return FALSE;
4056 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 4057 }
252b5132 4058
727fc41e 4059 tls_type = 0;
de972ffa 4060 r_type = ELF32_R_TYPE (rel->r_info);
cbf95972 4061 ifunc = NULL;
06a162cf 4062 if (h == NULL && !htab->is_vxworks)
e054468f 4063 {
06a162cf
AM
4064 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4065 abfd, r_symndx);
4066 if (isym == NULL)
4067 return FALSE;
4068
0bed072f 4069 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
e054468f 4070 {
0bed072f 4071 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
06a162cf
AM
4072 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4073 PLT_IFUNC);
4074 if (ifunc == NULL)
e054468f
AM
4075 return FALSE;
4076
06a162cf
AM
4077 /* STT_GNU_IFUNC symbols must have a PLT entry;
4078 In a non-pie executable even when there are
4079 no plt calls. */
0e1862bb 4080 if (!bfd_link_pic (info)
0bed072f 4081 || is_branch_reloc (r_type))
e054468f 4082 {
0bed072f
AM
4083 bfd_vma addend = 0;
4084 if (r_type == R_PPC_PLTREL24)
4085 {
4086 ppc_elf_tdata (abfd)->makes_plt_call = 1;
0e1862bb 4087 if (bfd_link_pic (info))
0bed072f
AM
4088 addend = rel->r_addend;
4089 }
4090 if (!update_plt_info (abfd, ifunc, got2, addend))
4091 return FALSE;
e054468f
AM
4092 }
4093 }
25f23106
AM
4094 }
4095
de972ffa
AM
4096 if (!htab->is_vxworks
4097 && is_branch_reloc (r_type)
4098 && h != NULL
4099 && h == tga)
25f23106 4100 {
de972ffa
AM
4101 if (rel != relocs
4102 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4103 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4104 /* We have a new-style __tls_get_addr call with a marker
4105 reloc. */
4106 ;
4107 else
4108 /* Mark this section as having an old-style call. */
4109 sec->has_tls_get_addr_call = 1;
e054468f 4110 }
727fc41e 4111
25dbc73a
AM
4112 switch (r_type)
4113 {
727fc41e
AM
4114 case R_PPC_TLSGD:
4115 case R_PPC_TLSLD:
4116 /* These special tls relocs tie a call to __tls_get_addr with
4117 its parameter symbol. */
4118 break;
4119
25dbc73a
AM
4120 case R_PPC_GOT_TLSLD16:
4121 case R_PPC_GOT_TLSLD16_LO:
4122 case R_PPC_GOT_TLSLD16_HI:
4123 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4124 tls_type = TLS_TLS | TLS_LD;
4125 goto dogottls;
252b5132 4126
25dbc73a
AM
4127 case R_PPC_GOT_TLSGD16:
4128 case R_PPC_GOT_TLSGD16_LO:
4129 case R_PPC_GOT_TLSGD16_HI:
4130 case R_PPC_GOT_TLSGD16_HA:
4131 tls_type = TLS_TLS | TLS_GD;
4132 goto dogottls;
4133
4134 case R_PPC_GOT_TPREL16:
4135 case R_PPC_GOT_TPREL16_LO:
4136 case R_PPC_GOT_TPREL16_HI:
4137 case R_PPC_GOT_TPREL16_HA:
0e1862bb 4138 if (bfd_link_pic (info))
25dbc73a
AM
4139 info->flags |= DF_STATIC_TLS;
4140 tls_type = TLS_TLS | TLS_TPREL;
4141 goto dogottls;
4142
4143 case R_PPC_GOT_DTPREL16:
4144 case R_PPC_GOT_DTPREL16_LO:
4145 case R_PPC_GOT_DTPREL16_HI:
4146 case R_PPC_GOT_DTPREL16_HA:
4147 tls_type = TLS_TLS | TLS_DTPREL;
4148 dogottls:
4149 sec->has_tls_reloc = 1;
4150 /* Fall thru */
252b5132 4151
25dbc73a
AM
4152 /* GOT16 relocations */
4153 case R_PPC_GOT16:
4154 case R_PPC_GOT16_LO:
4155 case R_PPC_GOT16_HI:
4156 case R_PPC_GOT16_HA:
4157 /* This symbol requires a global offset table entry. */
4158 if (htab->got == NULL)
4159 {
4160 if (htab->elf.dynobj == NULL)
4161 htab->elf.dynobj = abfd;
4162 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4163 return FALSE;
4164 }
4165 if (h != NULL)
4166 {
4167 h->got.refcount += 1;
4168 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4169 }
4170 else
4171 /* This is a global offset table entry for a local symbol. */
4172 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4173 return FALSE;
91e21fb7
AM
4174
4175 /* We may also need a plt entry if the symbol turns out to be
4176 an ifunc. */
0e1862bb 4177 if (h != NULL && !bfd_link_pic (info))
91e21fb7
AM
4178 {
4179 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4180 return FALSE;
4181 }
25dbc73a 4182 break;
252b5132 4183
25dbc73a
AM
4184 /* Indirect .sdata relocation. */
4185 case R_PPC_EMB_SDAI16:
0e1862bb 4186 if (bfd_link_pic (info))
25dbc73a
AM
4187 {
4188 bad_shared_reloc (abfd, r_type);
4189 return FALSE;
4190 }
93d1b056
AM
4191 htab->sdata[0].sym->ref_regular = 1;
4192 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4193 h, rel))
25dbc73a 4194 return FALSE;
046183de
AM
4195 if (h != NULL)
4196 {
4197 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4198 h->non_got_ref = TRUE;
4199 }
25dbc73a 4200 break;
252b5132 4201
25dbc73a
AM
4202 /* Indirect .sdata2 relocation. */
4203 case R_PPC_EMB_SDA2I16:
0e1862bb 4204 if (bfd_link_pic (info))
25dbc73a
AM
4205 {
4206 bad_shared_reloc (abfd, r_type);
4207 return FALSE;
4208 }
93d1b056
AM
4209 htab->sdata[1].sym->ref_regular = 1;
4210 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4211 h, rel))
25dbc73a 4212 return FALSE;
046183de
AM
4213 if (h != NULL)
4214 {
4215 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4216 h->non_got_ref = TRUE;
4217 }
25dbc73a 4218 break;
252b5132 4219
93d1b056
AM
4220 case R_PPC_SDAREL16:
4221 htab->sdata[0].sym->ref_regular = 1;
4222 /* Fall thru */
4223
b9c361e0
JL
4224 case R_PPC_VLE_SDAREL_LO16A:
4225 case R_PPC_VLE_SDAREL_LO16D:
4226 case R_PPC_VLE_SDAREL_HI16A:
4227 case R_PPC_VLE_SDAREL_HI16D:
4228 case R_PPC_VLE_SDAREL_HA16A:
4229 case R_PPC_VLE_SDAREL_HA16D:
046183de
AM
4230 if (h != NULL)
4231 {
4232 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4233 h->non_got_ref = TRUE;
4234 }
4235 break;
4236
b9c361e0
JL
4237 case R_PPC_VLE_REL8:
4238 case R_PPC_VLE_REL15:
4239 case R_PPC_VLE_REL24:
4240 case R_PPC_VLE_LO16A:
4241 case R_PPC_VLE_LO16D:
4242 case R_PPC_VLE_HI16A:
4243 case R_PPC_VLE_HI16D:
4244 case R_PPC_VLE_HA16A:
4245 case R_PPC_VLE_HA16D:
4246 break;
4247
25dbc73a 4248 case R_PPC_EMB_SDA2REL:
0e1862bb 4249 if (bfd_link_pic (info))
046183de
AM
4250 {
4251 bad_shared_reloc (abfd, r_type);
4252 return FALSE;
4253 }
93d1b056 4254 htab->sdata[1].sym->ref_regular = 1;
046183de
AM
4255 if (h != NULL)
4256 {
4257 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4258 h->non_got_ref = TRUE;
4259 }
4260 break;
4261
b9c361e0
JL
4262 case R_PPC_VLE_SDA21_LO:
4263 case R_PPC_VLE_SDA21:
25dbc73a
AM
4264 case R_PPC_EMB_SDA21:
4265 case R_PPC_EMB_RELSDA:
0e1862bb 4266 if (bfd_link_pic (info))
046183de
AM
4267 {
4268 bad_shared_reloc (abfd, r_type);
4269 return FALSE;
4270 }
046183de
AM
4271 if (h != NULL)
4272 {
4273 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4274 h->non_got_ref = TRUE;
4275 }
4276 break;
4277
25dbc73a
AM
4278 case R_PPC_EMB_NADDR32:
4279 case R_PPC_EMB_NADDR16:
4280 case R_PPC_EMB_NADDR16_LO:
4281 case R_PPC_EMB_NADDR16_HI:
4282 case R_PPC_EMB_NADDR16_HA:
0e1862bb 4283 if (bfd_link_pic (info))
25dbc73a
AM
4284 {
4285 bad_shared_reloc (abfd, r_type);
4286 return FALSE;
4287 }
4dc4a9a5 4288 if (h != NULL)
046183de 4289 h->non_got_ref = TRUE;
25dbc73a 4290 break;
252b5132 4291
25dbc73a 4292 case R_PPC_PLTREL24:
de972ffa 4293 if (h == NULL)
6d78d0b9
AM
4294 break;
4295 /* Fall through */
4296 case R_PPC_PLT32:
25dbc73a
AM
4297 case R_PPC_PLTREL32:
4298 case R_PPC_PLT16_LO:
4299 case R_PPC_PLT16_HI:
4300 case R_PPC_PLT16_HA:
4301#ifdef DEBUG
4302 fprintf (stderr, "Reloc requires a PLT entry\n");
4303#endif
cbf95972 4304 /* This symbol requires a procedure linkage table entry. */
25dbc73a
AM
4305 if (h == NULL)
4306 {
cbf95972
AM
4307 if (ifunc == NULL)
4308 {
4309 /* It does not make sense to have a procedure linkage
4310 table entry for a non-ifunc local symbol. */
4311 info->callbacks->einfo
4312 (_("%P: %H: %s reloc against local symbol\n"),
4313 abfd, sec, rel->r_offset,
4314 ppc_elf_howto_table[r_type]->name);
4315 bfd_set_error (bfd_error_bad_value);
4316 return FALSE;
4317 }
25dbc73a 4318 }
a6aa5195
AM
4319 else
4320 {
016687f8 4321 bfd_vma addend = 0;
ee05f2fe 4322
016687f8
AM
4323 if (r_type == R_PPC_PLTREL24)
4324 {
4325 ppc_elf_tdata (abfd)->makes_plt_call = 1;
0e1862bb 4326 if (bfd_link_pic (info))
a877a2b6 4327 addend = rel->r_addend;
016687f8 4328 }
a6aa5195 4329 h->needs_plt = 1;
32af9f6e 4330 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
a6aa5195
AM
4331 return FALSE;
4332 }
25dbc73a 4333 break;
ee05f2fe 4334
25dbc73a
AM
4335 /* The following relocations don't need to propagate the
4336 relocation if linking a shared object since they are
4337 section relative. */
4338 case R_PPC_SECTOFF:
4339 case R_PPC_SECTOFF_LO:
4340 case R_PPC_SECTOFF_HI:
4341 case R_PPC_SECTOFF_HA:
4342 case R_PPC_DTPREL16:
4343 case R_PPC_DTPREL16_LO:
4344 case R_PPC_DTPREL16_HI:
4345 case R_PPC_DTPREL16_HA:
4346 case R_PPC_TOC16:
4347 break;
252b5132 4348
d7128ce4
AM
4349 case R_PPC_REL16:
4350 case R_PPC_REL16_LO:
4351 case R_PPC_REL16_HI:
4352 case R_PPC_REL16_HA:
a680de9a 4353 case R_PPC_REL16DX_HA:
016687f8 4354 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
4355 break;
4356
a6aa5195 4357 /* These are just markers. */
25dbc73a
AM
4358 case R_PPC_TLS:
4359 case R_PPC_EMB_MRKREF:
4360 case R_PPC_NONE:
4361 case R_PPC_max:
32af9f6e
AM
4362 case R_PPC_RELAX:
4363 case R_PPC_RELAX_PLT:
4364 case R_PPC_RELAX_PLTREL24:
25dbc73a 4365 break;
252b5132 4366
25dbc73a
AM
4367 /* These should only appear in dynamic objects. */
4368 case R_PPC_COPY:
4369 case R_PPC_GLOB_DAT:
4370 case R_PPC_JMP_SLOT:
4371 case R_PPC_RELATIVE:
e054468f 4372 case R_PPC_IRELATIVE:
25dbc73a 4373 break;
252b5132 4374
25dbc73a
AM
4375 /* These aren't handled yet. We'll report an error later. */
4376 case R_PPC_ADDR30:
4377 case R_PPC_EMB_RELSEC16:
4378 case R_PPC_EMB_RELST_LO:
4379 case R_PPC_EMB_RELST_HI:
4380 case R_PPC_EMB_RELST_HA:
4381 case R_PPC_EMB_BIT_FLD:
4382 break;
252b5132 4383
25dbc73a
AM
4384 /* This refers only to functions defined in the shared library. */
4385 case R_PPC_LOCAL24PC:
727fc41e 4386 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
4387 {
4388 htab->plt_type = PLT_OLD;
4389 htab->old_bfd = abfd;
4390 }
c7e17e05
AM
4391 if (h != NULL && h->type == STT_GNU_IFUNC)
4392 {
c7e17e05
AM
4393 h->needs_plt = 1;
4394 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4395 return FALSE;
4396 }
25dbc73a 4397 break;
252b5132 4398
25dbc73a
AM
4399 /* This relocation describes the C++ object vtable hierarchy.
4400 Reconstruct it for later use during GC. */
4401 case R_PPC_GNU_VTINHERIT:
4402 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4403 return FALSE;
4404 break;
252b5132 4405
25dbc73a
AM
4406 /* This relocation describes which C++ vtable entries are actually
4407 used. Record for later use during GC. */
4408 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
4409 BFD_ASSERT (h != NULL);
4410 if (h != NULL
4411 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
4412 return FALSE;
4413 break;
252b5132 4414
25dbc73a
AM
4415 /* We shouldn't really be seeing these. */
4416 case R_PPC_TPREL32:
1d483afe
AM
4417 case R_PPC_TPREL16:
4418 case R_PPC_TPREL16_LO:
4419 case R_PPC_TPREL16_HI:
4420 case R_PPC_TPREL16_HA:
0e1862bb 4421 if (bfd_link_pic (info))
25dbc73a
AM
4422 info->flags |= DF_STATIC_TLS;
4423 goto dodyn;
252b5132 4424
25dbc73a
AM
4425 /* Nor these. */
4426 case R_PPC_DTPMOD32:
4427 case R_PPC_DTPREL32:
4428 goto dodyn;
252b5132 4429
9edfd1af
AM
4430 case R_PPC_REL32:
4431 if (h == NULL
4432 && got2 != NULL
4433 && (sec->flags & SEC_CODE) != 0
0e1862bb 4434 && bfd_link_pic (info)
4a3dc543 4435 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
4436 {
4437 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4438 the start of a function, which assembles to a REL32
4439 reference to .got2. If we detect one of these, then
4440 force the old PLT layout because the linker cannot
4441 reliably deduce the GOT pointer value needed for
4442 PLT call stubs. */
4443 asection *s;
87d72d41 4444 Elf_Internal_Sym *isym;
9edfd1af 4445
87d72d41
AM
4446 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4447 abfd, r_symndx);
4448 if (isym == NULL)
4449 return FALSE;
4450
4451 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
9edfd1af 4452 if (s == got2)
016687f8
AM
4453 {
4454 htab->plt_type = PLT_OLD;
4455 htab->old_bfd = abfd;
4456 }
9edfd1af 4457 }
7123df0e 4458 if (h == NULL || h == htab->elf.hgot)
fd38b44c 4459 break;
625af618
AM
4460 /* fall through */
4461
4462 case R_PPC_ADDR32:
4463 case R_PPC_ADDR16:
4464 case R_PPC_ADDR16_LO:
4465 case R_PPC_ADDR16_HI:
4466 case R_PPC_ADDR16_HA:
4467 case R_PPC_UADDR32:
4468 case R_PPC_UADDR16:
0e1862bb 4469 if (h != NULL && !bfd_link_pic (info))
625af618
AM
4470 {
4471 /* We may need a plt entry if the symbol turns out to be
4472 a function defined in a dynamic object. */
3ec01793 4473 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
625af618
AM
4474 return FALSE;
4475
4476 /* We may need a copy reloc too. */
4477 h->non_got_ref = 1;
4478 h->pointer_equality_needed = 1;
d3e454b9
AM
4479 if (r_type == R_PPC_ADDR16_HA)
4480 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4481 if (r_type == R_PPC_ADDR16_LO)
4482 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
625af618
AM
4483 }
4484 goto dodyn;
9edfd1af 4485
25dbc73a
AM
4486 case R_PPC_REL24:
4487 case R_PPC_REL14:
4488 case R_PPC_REL14_BRTAKEN:
4489 case R_PPC_REL14_BRNTAKEN:
d7128ce4 4490 if (h == NULL)
25dbc73a 4491 break;
7123df0e 4492 if (h == htab->elf.hgot)
d7128ce4 4493 {
7123df0e 4494 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4495 {
4496 htab->plt_type = PLT_OLD;
4497 htab->old_bfd = abfd;
4498 }
d7128ce4
AM
4499 break;
4500 }
25dbc73a 4501 /* fall through */
ee05f2fe 4502
25dbc73a 4503 case R_PPC_ADDR24:
25dbc73a
AM
4504 case R_PPC_ADDR14:
4505 case R_PPC_ADDR14_BRTAKEN:
4506 case R_PPC_ADDR14_BRNTAKEN:
0e1862bb 4507 if (h != NULL && !bfd_link_pic (info))
25dbc73a
AM
4508 {
4509 /* We may need a plt entry if the symbol turns out to be
4510 a function defined in a dynamic object. */
e054468f 4511 h->needs_plt = 1;
de972ffa 4512 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
a6aa5195 4513 return FALSE;
625af618 4514 break;
25dbc73a 4515 }
7619e7c7 4516
25dbc73a
AM
4517 dodyn:
4518 /* If we are creating a shared library, and this is a reloc
4519 against a global symbol, or a non PC relative reloc
4520 against a local symbol, then we need to copy the reloc
4521 into the shared library. However, if we are linking with
4522 -Bsymbolic, we do not need to copy a reloc against a
4523 global symbol which is defined in an object we are
4524 including in the link (i.e., DEF_REGULAR is set). At
4525 this point we have not seen all the input files, so it is
4526 possible that DEF_REGULAR is not set now but will be set
4527 later (it is never cleared). In case of a weak definition,
4528 DEF_REGULAR may be cleared later by a strong definition in
4529 a shared library. We account for that possibility below by
4530 storing information in the dyn_relocs field of the hash
4531 table entry. A similar situation occurs when creating
4532 shared libraries and symbol visibility changes render the
4533 symbol local.
7619e7c7 4534
25dbc73a
AM
4535 If on the other hand, we are creating an executable, we
4536 may need to keep relocations for symbols satisfied by a
4537 dynamic library if we manage to avoid copy relocs for the
4538 symbol. */
0e1862bb 4539 if ((bfd_link_pic (info)
1d483afe 4540 && (must_be_dyn_reloc (info, r_type)
25dbc73a 4541 || (h != NULL
198f1157 4542 && (!SYMBOLIC_BIND (info, h)
25dbc73a
AM
4543 || h->root.type == bfd_link_hash_defweak
4544 || !h->def_regular))))
4545 || (ELIMINATE_COPY_RELOCS
0e1862bb 4546 && !bfd_link_pic (info)
25dbc73a
AM
4547 && h != NULL
4548 && (h->root.type == bfd_link_hash_defweak
de972ffa 4549 || !h->def_regular)))
25dbc73a 4550 {
25dbc73a
AM
4551#ifdef DEBUG
4552 fprintf (stderr,
4553 "ppc_elf_check_relocs needs to "
4554 "create relocation for %s\n",
4555 (h && h->root.root.string
4556 ? h->root.root.string : "<unknown>"));
4557#endif
4558 if (sreloc == NULL)
4559 {
c9a2f333
AM
4560 if (htab->elf.dynobj == NULL)
4561 htab->elf.dynobj = abfd;
83bac4b0
NC
4562
4563 sreloc = _bfd_elf_make_dynamic_reloc_section
4564 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4565
25dbc73a 4566 if (sreloc == NULL)
83bac4b0 4567 return FALSE;
25dbc73a 4568 }
7619e7c7 4569
25dbc73a
AM
4570 /* If this is a global symbol, we count the number of
4571 relocations we need for this symbol. */
4572 if (h != NULL)
4573 {
f95f8542
AM
4574 struct elf_dyn_relocs *p;
4575 struct elf_dyn_relocs **rel_head;
4576
91d6fa6a 4577 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
f95f8542
AM
4578 p = *rel_head;
4579 if (p == NULL || p->sec != sec)
4580 {
4581 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4582 if (p == NULL)
4583 return FALSE;
4584 p->next = *rel_head;
4585 *rel_head = p;
4586 p->sec = sec;
4587 p->count = 0;
4588 p->pc_count = 0;
4589 }
4590 p->count += 1;
4591 if (!must_be_dyn_reloc (info, r_type))
4592 p->pc_count += 1;
25dbc73a
AM
4593 }
4594 else
4595 {
4596 /* Track dynamic relocs needed for local syms too.
4597 We really need local syms available to do this
4598 easily. Oh well. */
f95f8542
AM
4599 struct ppc_dyn_relocs *p;
4600 struct ppc_dyn_relocs **rel_head;
4601 bfd_boolean is_ifunc;
25dbc73a 4602 asection *s;
6edfbbad 4603 void *vpp;
87d72d41 4604 Elf_Internal_Sym *isym;
6edfbbad 4605
87d72d41
AM
4606 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4607 abfd, r_symndx);
4608 if (isym == NULL)
25dbc73a 4609 return FALSE;
7fce784e 4610
87d72d41
AM
4611 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4612 if (s == NULL)
4613 s = sec;
4614
6edfbbad 4615 vpp = &elf_section_data (s)->local_dynrel;
f95f8542
AM
4616 rel_head = (struct ppc_dyn_relocs **) vpp;
4617 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4618 p = *rel_head;
4619 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4620 p = p->next;
4621 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4622 {
4623 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4624 if (p == NULL)
4625 return FALSE;
4626 p->next = *rel_head;
4627 *rel_head = p;
4628 p->sec = sec;
4629 p->ifunc = is_ifunc;
4630 p->count = 0;
4631 }
4632 p->count += 1;
25dbc73a 4633 }
7619e7c7 4634 }
25dbc73a
AM
4635
4636 break;
7619e7c7
AM
4637 }
4638 }
ee05f2fe 4639
25dbc73a
AM
4640 return TRUE;
4641}
4642\f
34c8bcba
JM
4643
4644/* Merge object attributes from IBFD into OBFD. Raise an error if
4645 there are conflicting attributes. */
4646static bfd_boolean
4647ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4648{
c6e65352
DJ
4649 obj_attribute *in_attr, *in_attrs;
4650 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM
4651
4652 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4653 {
4654 /* This is the first object. Copy the attributes. */
4655 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4656
4657 /* Use the Tag_null value to indicate the attributes have been
4658 initialized. */
4659 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4660
4661 return TRUE;
4662 }
4663
c6e65352
DJ
4664 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4665 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4666
34c8bcba
JM
4667 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4668 non-conflicting ones. */
c6e65352
DJ
4669 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4670 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4671 if (in_attr->i != out_attr->i)
34c8bcba 4672 {
c6e65352
DJ
4673 out_attr->type = 1;
4674 if (out_attr->i == 0)
4675 out_attr->i = in_attr->i;
4676 else if (in_attr->i == 0)
34c8bcba 4677 ;
c6e65352 4678 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM
4679 _bfd_error_handler
4680 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3c7b9897
AM
4681 else if (out_attr->i == 1 && in_attr->i == 3)
4682 _bfd_error_handler
5b914448 4683 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3c7b9897
AM
4684 obfd, ibfd);
4685 else if (out_attr->i == 3 && in_attr->i == 1)
4686 _bfd_error_handler
5b914448 4687 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3c7b9897
AM
4688 ibfd, obfd);
4689 else if (out_attr->i == 3 && in_attr->i == 2)
4690 _bfd_error_handler
5b914448 4691 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3c7b9897
AM
4692 ibfd, obfd);
4693 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
34c8bcba
JM
4694 _bfd_error_handler
4695 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3c7b9897 4696 else if (in_attr->i > 3)
34c8bcba
JM
4697 _bfd_error_handler
4698 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 4699 in_attr->i);
34c8bcba
JM
4700 else
4701 _bfd_error_handler
4702 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ
4703 out_attr->i);
4704 }
4705
4706 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4707 merge non-conflicting ones. */
4708 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4709 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4710 if (in_attr->i != out_attr->i)
4711 {
4712 const char *in_abi = NULL, *out_abi = NULL;
4713
4714 switch (in_attr->i)
4715 {
4716 case 1: in_abi = "generic"; break;
4717 case 2: in_abi = "AltiVec"; break;
4718 case 3: in_abi = "SPE"; break;
4719 }
4720
4721 switch (out_attr->i)
4722 {
4723 case 1: out_abi = "generic"; break;
4724 case 2: out_abi = "AltiVec"; break;
4725 case 3: out_abi = "SPE"; break;
4726 }
4727
4728 out_attr->type = 1;
4729 if (out_attr->i == 0)
4730 out_attr->i = in_attr->i;
4731 else if (in_attr->i == 0)
4732 ;
4733 /* For now, allow generic to transition to AltiVec or SPE
4734 without a warning. If GCC marked files with their stack
4735 alignment and used don't-care markings for files which are
4736 not affected by the vector ABI, we could warn about this
4737 case too. */
4738 else if (out_attr->i == 1)
4739 out_attr->i = in_attr->i;
4740 else if (in_attr->i == 1)
4741 ;
4742 else if (in_abi == NULL)
4743 _bfd_error_handler
4744 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4745 in_attr->i);
4746 else if (out_abi == NULL)
4747 _bfd_error_handler
4748 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4749 in_attr->i);
4750 else
4751 _bfd_error_handler
4752 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4753 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM
4754 }
4755
f82e0623
NF
4756 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4757 and merge non-conflicting ones. */
4758 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4759 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4760 if (in_attr->i != out_attr->i)
4761 {
4762 out_attr->type = 1;
4763 if (out_attr->i == 0)
4764 out_attr->i = in_attr->i;
4765 else if (in_attr->i == 0)
4766 ;
4767 else if (out_attr->i == 1 && in_attr->i == 2)
4768 _bfd_error_handler
4769 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4770 else if (out_attr->i == 2 && in_attr->i == 1)
4771 _bfd_error_handler
4772 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4773 else if (in_attr->i > 2)
4774 _bfd_error_handler
4775 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4776 in_attr->i);
4777 else
4778 _bfd_error_handler
4779 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4780 out_attr->i);
4781 }
4782
34c8bcba
JM
4783 /* Merge Tag_compatibility attributes and any common GNU ones. */
4784 _bfd_elf_merge_object_attributes (ibfd, obfd);
4785
4786 return TRUE;
4787}
4788
8853c3d3
AM
4789/* Merge backend specific data from an object file to the output
4790 object file when linking. */
4791
4792static bfd_boolean
4793ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4794{
4795 flagword old_flags;
4796 flagword new_flags;
4797 bfd_boolean error;
4798
0c8d6e5c 4799 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4800 return TRUE;
4801
cc643b88 4802 /* Check if we have the same endianness. */
8853c3d3
AM
4803 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4804 return FALSE;
4805
34c8bcba
JM
4806 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4807 return FALSE;
4808
8853c3d3
AM
4809 new_flags = elf_elfheader (ibfd)->e_flags;
4810 old_flags = elf_elfheader (obfd)->e_flags;
4811 if (!elf_flags_init (obfd))
4812 {
4813 /* First call, no flags set. */
4814 elf_flags_init (obfd) = TRUE;
4815 elf_elfheader (obfd)->e_flags = new_flags;
4816 }
4817
4818 /* Compatible flags are ok. */
4819 else if (new_flags == old_flags)
4820 ;
4821
4822 /* Incompatible flags. */
4823 else
4824 {
4825 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4826 to be linked with either. */
4827 error = FALSE;
4828 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4829 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4830 {
4831 error = TRUE;
4832 (*_bfd_error_handler)
4833 (_("%B: compiled with -mrelocatable and linked with "
4834 "modules compiled normally"), ibfd);
4835 }
4836 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4837 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4838 {
4839 error = TRUE;
4840 (*_bfd_error_handler)
4841 (_("%B: compiled normally and linked with "
4842 "modules compiled with -mrelocatable"), ibfd);
4843 }
4844
4845 /* The output is -mrelocatable-lib iff both the input files are. */
4846 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4847 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4848
4849 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4850 but each input file is either -mrelocatable or -mrelocatable-lib. */
4851 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4852 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4853 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4854 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4855
4856 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4857 any module uses it. */
4858 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4859
4860 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4861 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4862
4863 /* Warn about any other mismatches. */
4864 if (new_flags != old_flags)
4865 {
4866 error = TRUE;
4867 (*_bfd_error_handler)
4868 (_("%B: uses different e_flags (0x%lx) fields "
4869 "than previous modules (0x%lx)"),
4870 ibfd, (long) new_flags, (long) old_flags);
4871 }
4872
4873 if (error)
4874 {
4875 bfd_set_error (bfd_error_bad_value);
4876 return FALSE;
4877 }
4878 }
4879
4880 return TRUE;
4881}
b9c361e0
JL
4882
4883static void
86c95733
AM
4884ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4885 bfd_vma value,
4886 split16_format_type split16_format)
b9c361e0
JL
4887
4888{
86c95733 4889 unsigned int insn, top5;
b9c361e0 4890
86c95733
AM
4891 insn = bfd_get_32 (output_bfd, loc);
4892 top5 = value & 0xf800;
4893 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
dfdaec14 4894 insn &= (split16_format == split16a_type ? ~0x1f007ff : ~0x1f07ff);
b9c361e0 4895 insn |= top5;
86c95733
AM
4896 insn |= value & 0x7ff;
4897 bfd_put_32 (output_bfd, insn, loc);
b9c361e0
JL
4898}
4899
8853c3d3 4900\f
d7128ce4
AM
4901/* Choose which PLT scheme to use, and set .plt flags appropriately.
4902 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4903int
4904ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
5446cbdf 4905 struct bfd_link_info *info)
d7128ce4
AM
4906{
4907 struct ppc_elf_link_hash_table *htab;
9d8504b1 4908 flagword flags;
d7128ce4
AM
4909
4910 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4911
4912 if (htab->plt_type == PLT_UNSET)
016687f8 4913 {
b3874e1a
AM
4914 struct elf_link_hash_entry *h;
4915
5446cbdf 4916 if (htab->params->plt_style == PLT_OLD)
016687f8 4917 htab->plt_type = PLT_OLD;
0e1862bb 4918 else if (bfd_link_pic (info)
b3874e1a
AM
4919 && htab->elf.dynamic_sections_created
4920 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4921 FALSE, FALSE, TRUE)) != NULL
4922 && (h->type == STT_FUNC
4923 || h->needs_plt)
4924 && h->ref_regular
4925 && !(SYMBOL_CALLS_LOCAL (info, h)
4926 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4927 && h->root.type == bfd_link_hash_undefweak)))
4928 {
4929 /* Profiling of shared libs (and pies) is not supported with
4930 secure plt, because ppc32 does profiling before a
4931 function prologue and a secure plt pic call stubs needs
4932 r30 to be set up. */
4933 htab->plt_type = PLT_OLD;
4934 }
016687f8
AM
4935 else
4936 {
4937 bfd *ibfd;
5446cbdf 4938 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
016687f8
AM
4939
4940 /* Look through the reloc flags left by ppc_elf_check_relocs.
4941 Use the old style bss plt if a file makes plt calls
4942 without using the new relocs, and if ld isn't given
4943 --secure-plt and we never see REL16 relocs. */
4944 if (plt_type == PLT_UNSET)
4945 plt_type = PLT_OLD;
c72f2fb2 4946 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
0c8d6e5c 4947 if (is_ppc_elf (ibfd))
016687f8
AM
4948 {
4949 if (ppc_elf_tdata (ibfd)->has_rel16)
4950 plt_type = PLT_NEW;
4951 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4952 {
4953 plt_type = PLT_OLD;
4954 htab->old_bfd = ibfd;
4955 break;
4956 }
4957 }
4958 htab->plt_type = plt_type;
4959 }
4960 }
5446cbdf 4961 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
b3874e1a
AM
4962 {
4963 if (htab->old_bfd != NULL)
4964 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4965 htab->old_bfd);
4966 else
4967 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4968 }
d7128ce4 4969
4a3dc543 4970 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4971
4a3dc543 4972 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
4973 {
4974 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4975 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
4976
4977 /* The new PLT is a loaded section. */
4978 if (htab->plt != NULL
4979 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4980 return -1;
4981
4982 /* The new GOT is not executable. */
4983 if (htab->got != NULL
4984 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4985 return -1;
d7128ce4
AM
4986 }
4987 else
4988 {
4989 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
4990 if (htab->glink != NULL
4991 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4992 return -1;
d7128ce4 4993 }
4a3dc543 4994 return htab->plt_type == PLT_NEW;
d7128ce4
AM
4995}
4996\f
25dbc73a
AM
4997/* Return the section that should be marked against GC for a given
4998 relocation. */
586119b3 4999
25dbc73a
AM
5000static asection *
5001ppc_elf_gc_mark_hook (asection *sec,
07adf181 5002 struct bfd_link_info *info,
25dbc73a
AM
5003 Elf_Internal_Rela *rel,
5004 struct elf_link_hash_entry *h,
5005 Elf_Internal_Sym *sym)
5006{
5007 if (h != NULL)
07adf181
AM
5008 switch (ELF32_R_TYPE (rel->r_info))
5009 {
5010 case R_PPC_GNU_VTINHERIT:
5011 case R_PPC_GNU_VTENTRY:
5012 return NULL;
5013 }
5014
5015 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 5016}
a876ecf9 5017
25dbc73a
AM
5018/* Update the got, plt and dynamic reloc reference counts for the
5019 section being removed. */
5020
5021static bfd_boolean
5022ppc_elf_gc_sweep_hook (bfd *abfd,
5023 struct bfd_link_info *info,
5024 asection *sec,
5025 const Elf_Internal_Rela *relocs)
5026{
5027 struct ppc_elf_link_hash_table *htab;
5028 Elf_Internal_Shdr *symtab_hdr;
5029 struct elf_link_hash_entry **sym_hashes;
5030 bfd_signed_vma *local_got_refcounts;
5031 const Elf_Internal_Rela *rel, *relend;
a6aa5195 5032 asection *got2;
25dbc73a 5033
0e1862bb 5034 if (bfd_link_relocatable (info))
7dda2462
TG
5035 return TRUE;
5036
c87b5a93
AM
5037 if ((sec->flags & SEC_ALLOC) == 0)
5038 return TRUE;
5039
25dbc73a
AM
5040 elf_section_data (sec)->local_dynrel = NULL;
5041
5042 htab = ppc_elf_hash_table (info);
0ffa91dd 5043 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
5044 sym_hashes = elf_sym_hashes (abfd);
5045 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 5046 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
5047
5048 relend = relocs + sec->reloc_count;
5049 for (rel = relocs; rel < relend; rel++)
5050 {
5051 unsigned long r_symndx;
5052 enum elf_ppc_reloc_type r_type;
5053 struct elf_link_hash_entry *h = NULL;
5054
5055 r_symndx = ELF32_R_SYM (rel->r_info);
5056 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 5057 {
6061a67d 5058 struct elf_dyn_relocs **pp, *p;
25dbc73a
AM
5059 struct ppc_elf_link_hash_entry *eh;
5060
5061 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5062 while (h->root.type == bfd_link_hash_indirect
5063 || h->root.type == bfd_link_hash_warning)
5064 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5065 eh = (struct ppc_elf_link_hash_entry *) h;
5066
5067 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5068 if (p->sec == sec)
5069 {
5070 /* Everything must go for SEC. */
5071 *pp = p->next;
5072 break;
5073 }
a876ecf9 5074 }
ee05f2fe 5075
25dbc73a 5076 r_type = ELF32_R_TYPE (rel->r_info);
de972ffa
AM
5077 if (!htab->is_vxworks
5078 && h == NULL
5079 && local_got_refcounts != NULL
0e1862bb 5080 && (!bfd_link_pic (info)
de972ffa 5081 || is_branch_reloc (r_type)))
e054468f 5082 {
de972ffa
AM
5083 struct plt_entry **local_plt = (struct plt_entry **)
5084 (local_got_refcounts + symtab_hdr->sh_info);
5085 char *local_got_tls_masks = (char *)
5086 (local_plt + symtab_hdr->sh_info);
5087 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
e054468f 5088 {
de972ffa 5089 struct plt_entry **ifunc = local_plt + r_symndx;
a877a2b6
AM
5090 bfd_vma addend = 0;
5091 struct plt_entry *ent;
5092
0e1862bb 5093 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
a877a2b6
AM
5094 addend = rel->r_addend;
5095 ent = find_plt_ent (ifunc, got2, addend);
e054468f
AM
5096 if (ent->plt.refcount > 0)
5097 ent->plt.refcount -= 1;
5098 continue;
5099 }
5100 }
5101
25dbc73a 5102 switch (r_type)
ee05f2fe 5103 {
25dbc73a
AM
5104 case R_PPC_GOT_TLSLD16:
5105 case R_PPC_GOT_TLSLD16_LO:
5106 case R_PPC_GOT_TLSLD16_HI:
5107 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
5108 case R_PPC_GOT_TLSGD16:
5109 case R_PPC_GOT_TLSGD16_LO:
5110 case R_PPC_GOT_TLSGD16_HI:
5111 case R_PPC_GOT_TLSGD16_HA:
5112 case R_PPC_GOT_TPREL16:
5113 case R_PPC_GOT_TPREL16_LO:
5114 case R_PPC_GOT_TPREL16_HI:
5115 case R_PPC_GOT_TPREL16_HA:
5116 case R_PPC_GOT_DTPREL16:
5117 case R_PPC_GOT_DTPREL16_LO:
5118 case R_PPC_GOT_DTPREL16_HI:
5119 case R_PPC_GOT_DTPREL16_HA:
5120 case R_PPC_GOT16:
5121 case R_PPC_GOT16_LO:
5122 case R_PPC_GOT16_HI:
5123 case R_PPC_GOT16_HA:
5124 if (h != NULL)
ee05f2fe 5125 {
25dbc73a
AM
5126 if (h->got.refcount > 0)
5127 h->got.refcount--;
0e1862bb 5128 if (!bfd_link_pic (info))
91e21fb7
AM
5129 {
5130 struct plt_entry *ent;
5131
5132 ent = find_plt_ent (&h->plt.plist, NULL, 0);
32af9f6e 5133 if (ent != NULL && ent->plt.refcount > 0)
91e21fb7
AM
5134 ent->plt.refcount -= 1;
5135 }
ee05f2fe 5136 }
25dbc73a
AM
5137 else if (local_got_refcounts != NULL)
5138 {
5139 if (local_got_refcounts[r_symndx] > 0)
5140 local_got_refcounts[r_symndx]--;
5141 }
5142 break;
ee05f2fe 5143
25dbc73a
AM
5144 case R_PPC_REL24:
5145 case R_PPC_REL14:
5146 case R_PPC_REL14_BRTAKEN:
5147 case R_PPC_REL14_BRNTAKEN:
5148 case R_PPC_REL32:
3b36f7e6 5149 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM
5150 break;
5151 /* Fall thru */
ee05f2fe 5152
25dbc73a
AM
5153 case R_PPC_ADDR32:
5154 case R_PPC_ADDR24:
5155 case R_PPC_ADDR16:
5156 case R_PPC_ADDR16_LO:
5157 case R_PPC_ADDR16_HI:
5158 case R_PPC_ADDR16_HA:
5159 case R_PPC_ADDR14:
5160 case R_PPC_ADDR14_BRTAKEN:
5161 case R_PPC_ADDR14_BRNTAKEN:
5162 case R_PPC_UADDR32:
5163 case R_PPC_UADDR16:
0e1862bb 5164 if (bfd_link_pic (info))
87538722
AM
5165 break;
5166
25dbc73a
AM
5167 case R_PPC_PLT32:
5168 case R_PPC_PLTREL24:
87538722 5169 case R_PPC_PLTREL32:
25dbc73a
AM
5170 case R_PPC_PLT16_LO:
5171 case R_PPC_PLT16_HI:
5172 case R_PPC_PLT16_HA:
5173 if (h != NULL)
5174 {
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 (&h->plt.plist, got2, addend);
32af9f6e 5181 if (ent != NULL && ent->plt.refcount > 0)
a6aa5195 5182 ent->plt.refcount -= 1;
25dbc73a
AM
5183 }
5184 break;
ee05f2fe 5185
25dbc73a
AM
5186 default:
5187 break;
5188 }
7fce784e 5189 }
7fce784e
AS
5190 return TRUE;
5191}
25dbc73a 5192\f
3a71aa26
AM
5193/* Set plt output section type, htab->tls_get_addr, and call the
5194 generic ELF tls_setup function. */
7fce784e 5195
25dbc73a 5196asection *
5446cbdf 5197ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 5198{
25dbc73a 5199 struct ppc_elf_link_hash_table *htab;
7fce784e 5200
25dbc73a 5201 htab = ppc_elf_hash_table (info);
a7f2871e
AM
5202 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5203 FALSE, FALSE, TRUE);
f01f1741
AM
5204 if (htab->plt_type != PLT_NEW)
5205 htab->params->no_tls_get_addr_opt = TRUE;
5206
5446cbdf 5207 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM
5208 {
5209 struct elf_link_hash_entry *opt, *tga;
5210 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5211 FALSE, FALSE, TRUE);
5212 if (opt != NULL
5213 && (opt->root.type == bfd_link_hash_defined
5214 || opt->root.type == bfd_link_hash_defweak))
5215 {
5216 /* If glibc supports an optimized __tls_get_addr call stub,
5217 signalled by the presence of __tls_get_addr_opt, and we'll
5218 be calling __tls_get_addr via a plt call stub, then
5219 make __tls_get_addr point to __tls_get_addr_opt. */
5220 tga = htab->tls_get_addr;
5221 if (htab->elf.dynamic_sections_created
5222 && tga != NULL
5223 && (tga->type == STT_FUNC
5224 || tga->needs_plt)
5225 && !(SYMBOL_CALLS_LOCAL (info, tga)
5226 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5227 && tga->root.type == bfd_link_hash_undefweak)))
5228 {
5229 struct plt_entry *ent;
32af9f6e
AM
5230 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5231 if (ent->plt.refcount > 0)
5232 break;
5233 if (ent != NULL)
a7f2871e
AM
5234 {
5235 tga->root.type = bfd_link_hash_indirect;
5236 tga->root.u.i.link = &opt->root;
5237 ppc_elf_copy_indirect_symbol (info, opt, tga);
3bd43ebc 5238 opt->forced_local = 0;
a7f2871e
AM
5239 if (opt->dynindx != -1)
5240 {
5241 /* Use __tls_get_addr_opt in dynamic relocations. */
5242 opt->dynindx = -1;
5243 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5244 opt->dynstr_index);
5245 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5246 return FALSE;
5247 }
5248 htab->tls_get_addr = opt;
5249 }
5250 }
5251 }
5252 else
5446cbdf 5253 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 5254 }
4a3dc543 5255 if (htab->plt_type == PLT_NEW
d7128ce4
AM
5256 && htab->plt != NULL
5257 && htab->plt->output_section != NULL)
5258 {
5259 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5260 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5261 }
5262
25dbc73a 5263 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
5264}
5265
3a71aa26
AM
5266/* Return TRUE iff REL is a branch reloc with a global symbol matching
5267 HASH. */
5268
5269static bfd_boolean
5270branch_reloc_hash_match (const bfd *ibfd,
5271 const Elf_Internal_Rela *rel,
5272 const struct elf_link_hash_entry *hash)
5273{
5274 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5275 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5276 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5277
e054468f 5278 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
3a71aa26
AM
5279 {
5280 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5281 struct elf_link_hash_entry *h;
5282
5283 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5284 while (h->root.type == bfd_link_hash_indirect
5285 || h->root.type == bfd_link_hash_warning)
5286 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5287 if (h == hash)
5288 return TRUE;
5289 }
5290 return FALSE;
5291}
5292
25dbc73a
AM
5293/* Run through all the TLS relocs looking for optimization
5294 opportunities. */
252b5132 5295
25dbc73a
AM
5296bfd_boolean
5297ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5298 struct bfd_link_info *info)
252b5132 5299{
7fce784e 5300 bfd *ibfd;
25dbc73a
AM
5301 asection *sec;
5302 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 5303 int pass;
252b5132 5304
3cbc1e5e 5305 if (!bfd_link_executable (info))
25dbc73a 5306 return TRUE;
252b5132 5307
7619e7c7 5308 htab = ppc_elf_hash_table (info);
663a1470
AM
5309 if (htab == NULL)
5310 return FALSE;
5311
b7fcf6f6
AM
5312 /* Make two passes through the relocs. First time check that tls
5313 relocs involved in setting up a tls_get_addr call are indeed
663a1470
AM
5314 followed by such a call. If they are not, don't do any tls
5315 optimization. On the second pass twiddle tls_mask flags to
5316 notify relocate_section that optimization can be done, and
5317 adjust got and plt refcounts. */
b7fcf6f6 5318 for (pass = 0; pass < 2; ++pass)
c72f2fb2 5319 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
b7fcf6f6
AM
5320 {
5321 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 5322 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
32af9f6e 5323 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
7619e7c7 5324
b7fcf6f6
AM
5325 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5326 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5327 {
5328 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 5329 int expecting_tls_get_addr = 0;
252b5132 5330
b7fcf6f6
AM
5331 /* Read the relocations. */
5332 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5333 info->keep_memory);
5334 if (relstart == NULL)
5335 return FALSE;
7619e7c7 5336
b7fcf6f6
AM
5337 relend = relstart + sec->reloc_count;
5338 for (rel = relstart; rel < relend; rel++)
5339 {
5340 enum elf_ppc_reloc_type r_type;
5341 unsigned long r_symndx;
5342 struct elf_link_hash_entry *h = NULL;
5343 char *tls_mask;
5344 char tls_set, tls_clear;
5345 bfd_boolean is_local;
b7fcf6f6
AM
5346 bfd_signed_vma *got_count;
5347
5348 r_symndx = ELF32_R_SYM (rel->r_info);
5349 if (r_symndx >= symtab_hdr->sh_info)
5350 {
5351 struct elf_link_hash_entry **sym_hashes;
7fce784e 5352
b7fcf6f6
AM
5353 sym_hashes = elf_sym_hashes (ibfd);
5354 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5355 while (h->root.type == bfd_link_hash_indirect
5356 || h->root.type == bfd_link_hash_warning)
5357 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5358 }
7619e7c7 5359
b7fcf6f6
AM
5360 is_local = FALSE;
5361 if (h == NULL
5362 || !h->def_dynamic)
5363 is_local = TRUE;
7619e7c7 5364
b7fcf6f6 5365 r_type = ELF32_R_TYPE (rel->r_info);
663a1470
AM
5366 /* If this section has old-style __tls_get_addr calls
5367 without marker relocs, then check that each
5368 __tls_get_addr call reloc is preceded by a reloc
5369 that conceivably belongs to the __tls_get_addr arg
5370 setup insn. If we don't find matching arg setup
5371 relocs, don't do any tls optimization. */
5372 if (pass == 0
5373 && sec->has_tls_get_addr_call
5374 && h != NULL
5375 && h == htab->tls_get_addr
5376 && !expecting_tls_get_addr
5377 && is_branch_reloc (r_type))
5378 {
25f53a85 5379 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
663a1470
AM
5380 "TLS optimization disabled\n",
5381 ibfd, sec, rel->r_offset);
5382 if (elf_section_data (sec)->relocs != relstart)
5383 free (relstart);
5384 return TRUE;
5385 }
5386
5387 expecting_tls_get_addr = 0;
b7fcf6f6
AM
5388 switch (r_type)
5389 {
5390 case R_PPC_GOT_TLSLD16:
5391 case R_PPC_GOT_TLSLD16_LO:
5392 expecting_tls_get_addr = 1;
5393 /* Fall thru */
5394
5395 case R_PPC_GOT_TLSLD16_HI:
5396 case R_PPC_GOT_TLSLD16_HA:
5397 /* These relocs should never be against a symbol
5398 defined in a shared lib. Leave them alone if
5399 that turns out to be the case. */
5400 if (!is_local)
5401 continue;
5402
5403 /* LD -> LE */
5404 tls_set = 0;
5405 tls_clear = TLS_LD;
5406 break;
5407
5408 case R_PPC_GOT_TLSGD16:
5409 case R_PPC_GOT_TLSGD16_LO:
5410 expecting_tls_get_addr = 1;
5411 /* Fall thru */
5412
5413 case R_PPC_GOT_TLSGD16_HI:
5414 case R_PPC_GOT_TLSGD16_HA:
5415 if (is_local)
5416 /* GD -> LE */
5417 tls_set = 0;
5418 else
5419 /* GD -> IE */
5420 tls_set = TLS_TLS | TLS_TPRELGD;
5421 tls_clear = TLS_GD;
5422 break;
5423
5424 case R_PPC_GOT_TPREL16:
5425 case R_PPC_GOT_TPREL16_LO:
5426 case R_PPC_GOT_TPREL16_HI:
5427 case R_PPC_GOT_TPREL16_HA:
5428 if (is_local)
5429 {
5430 /* IE -> LE */
5431 tls_set = 0;
5432 tls_clear = TLS_TPREL;
5433 break;
5434 }
5435 else
5436 continue;
5437
32af9f6e
AM
5438 case R_PPC_TLSGD:
5439 case R_PPC_TLSLD:
5440 expecting_tls_get_addr = 2;
5441 tls_set = 0;
5442 tls_clear = 0;
5443 break;
5444
b7fcf6f6 5445 default:
25dbc73a 5446 continue;
b7fcf6f6 5447 }
25dbc73a 5448
b7fcf6f6
AM
5449 if (pass == 0)
5450 {
727fc41e 5451 if (!expecting_tls_get_addr
32af9f6e
AM
5452 || (expecting_tls_get_addr == 1
5453 && !sec->has_tls_get_addr_call))
b7fcf6f6 5454 continue;
25dbc73a 5455
3a71aa26
AM
5456 if (rel + 1 < relend
5457 && branch_reloc_hash_match (ibfd, rel + 1,
5458 htab->tls_get_addr))
5459 continue;
25dbc73a 5460
b7fcf6f6
AM
5461 /* Uh oh, we didn't find the expected call. We
5462 could just mark this symbol to exclude it
5463 from tls optimization but it's safer to skip
663a1470 5464 the entire optimization. */
25f53a85 5465 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM
5466 "TLS optimization disabled\n"),
5467 ibfd, sec, rel->r_offset);
5468 if (elf_section_data (sec)->relocs != relstart)
5469 free (relstart);
5470 return TRUE;
b7fcf6f6 5471 }
25dbc73a 5472
32af9f6e
AM
5473 if (expecting_tls_get_addr)
5474 {
5475 struct plt_entry *ent;
5476 bfd_vma addend = 0;
5477
0e1862bb 5478 if (bfd_link_pic (info)
32af9f6e
AM
5479 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5480 addend = rel[1].r_addend;
5481 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5482 got2, addend);
5483 if (ent != NULL && ent->plt.refcount > 0)
5484 ent->plt.refcount -= 1;
5485
5486 if (expecting_tls_get_addr == 2)
5487 continue;
5488 }
5489
b7fcf6f6
AM
5490 if (h != NULL)
5491 {
5492 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5493 got_count = &h->got.refcount;
5494 }
5495 else
5496 {
b7fcf6f6 5497 bfd_signed_vma *lgot_refs;
e054468f 5498 struct plt_entry **local_plt;
b7fcf6f6 5499 char *lgot_masks;
25dbc73a 5500
b7fcf6f6
AM
5501 if (locsyms == NULL)
5502 {
5503 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5504 if (locsyms == NULL)
5505 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5506 symtab_hdr->sh_info,
5507 0, NULL, NULL, NULL);
5508 if (locsyms == NULL)
5509 {
5510 if (elf_section_data (sec)->relocs != relstart)
5511 free (relstart);
5512 return FALSE;
5513 }
5514 }
b7fcf6f6
AM
5515 lgot_refs = elf_local_got_refcounts (ibfd);
5516 if (lgot_refs == NULL)
5517 abort ();
e054468f
AM
5518 local_plt = (struct plt_entry **)
5519 (lgot_refs + symtab_hdr->sh_info);
5520 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
b7fcf6f6
AM
5521 tls_mask = &lgot_masks[r_symndx];
5522 got_count = &lgot_refs[r_symndx];
5523 }
25dbc73a 5524
b7fcf6f6
AM
5525 if (tls_set == 0)
5526 {
5527 /* We managed to get rid of a got entry. */
5528 if (*got_count > 0)
5529 *got_count -= 1;
5530 }
25dbc73a 5531
b7fcf6f6
AM
5532 *tls_mask |= tls_set;
5533 *tls_mask &= ~tls_clear;
5534 }
25dbc73a 5535
b7fcf6f6
AM
5536 if (elf_section_data (sec)->relocs != relstart)
5537 free (relstart);
5538 }
5539
5540 if (locsyms != NULL
5541 && (symtab_hdr->contents != (unsigned char *) locsyms))
5542 {
5543 if (!info->keep_memory)
5544 free (locsyms);
5545 else
5546 symtab_hdr->contents = (unsigned char *) locsyms;
5547 }
5548 }
25dbc73a
AM
5549 return TRUE;
5550}
5551\f
625af618
AM
5552/* Return true if we have dynamic relocs that apply to read-only sections. */
5553
5554static bfd_boolean
5555readonly_dynrelocs (struct elf_link_hash_entry *h)
5556{
6061a67d 5557 struct elf_dyn_relocs *p;
625af618
AM
5558
5559 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5560 {
5561 asection *s = p->sec->output_section;
5562
5563 if (s != NULL
5564 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5565 == (SEC_READONLY | SEC_ALLOC)))
5566 return TRUE;
5567 }
5568 return FALSE;
5569}
5570
25dbc73a
AM
5571/* Adjust a symbol defined by a dynamic object and referenced by a
5572 regular object. The current definition is in some section of the
5573 dynamic object, but we're not including those sections. We have to
5574 change the definition to something the rest of the link can
5575 understand. */
7fce784e 5576
25dbc73a
AM
5577static bfd_boolean
5578ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5579 struct elf_link_hash_entry *h)
5580{
5581 struct ppc_elf_link_hash_table *htab;
5582 asection *s;
7fce784e 5583
25dbc73a
AM
5584#ifdef DEBUG
5585 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5586 h->root.root.string);
5587#endif
252b5132 5588
25dbc73a
AM
5589 /* Make sure we know what is going on here. */
5590 htab = ppc_elf_hash_table (info);
5591 BFD_ASSERT (htab->elf.dynobj != NULL
5592 && (h->needs_plt
91e21fb7 5593 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5594 || h->u.weakdef != NULL
5595 || (h->def_dynamic
5596 && h->ref_regular
5597 && !h->def_regular)));
252b5132 5598
25dbc73a
AM
5599 /* Deal with function syms. */
5600 if (h->type == STT_FUNC
e054468f 5601 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5602 || h->needs_plt)
5603 {
5604 /* Clear procedure linkage table information for any symbol that
5605 won't need a .plt entry. */
a6aa5195
AM
5606 struct plt_entry *ent;
5607 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5608 if (ent->plt.refcount > 0)
5609 break;
5610 if (ent == NULL
e054468f
AM
5611 || (h->type != STT_GNU_IFUNC
5612 && (SYMBOL_CALLS_LOCAL (info, h)
5613 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5614 && h->root.type == bfd_link_hash_undefweak))))
252b5132 5615 {
25dbc73a 5616 /* A PLT entry is not required/allowed when:
252b5132 5617
25dbc73a
AM
5618 1. We are not using ld.so; because then the PLT entry
5619 can't be set up, so we can't use one. In this case,
5620 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 5621
25dbc73a
AM
5622 2. GC has rendered the entry unused.
5623
5624 3. We know for certain that a call to this symbol
5625 will go to this object, or will remain undefined. */
a6aa5195 5626 h->plt.plist = NULL;
25dbc73a 5627 h->needs_plt = 0;
d1eca1e4 5628 h->pointer_equality_needed = 0;
25dbc73a 5629 }
625af618
AM
5630 else
5631 {
d1eca1e4
AM
5632 /* Taking a function's address in a read/write section
5633 doesn't require us to define the function symbol in the
1009ef28 5634 executable on a plt call stub. A dynamic reloc can
d1eca1e4
AM
5635 be used instead. */
5636 if (h->pointer_equality_needed
1009ef28
AM
5637 && h->type != STT_GNU_IFUNC
5638 && !htab->is_vxworks
5639 && !ppc_elf_hash_entry (h)->has_sda_refs
d1eca1e4
AM
5640 && !readonly_dynrelocs (h))
5641 {
5642 h->pointer_equality_needed = 0;
5643 h->non_got_ref = 0;
5644 }
5645
25f23106
AM
5646 /* After adjust_dynamic_symbol, non_got_ref set in the
5647 non-shared case means that we have allocated space in
5648 .dynbss for the symbol and thus dyn_relocs for this
5649 symbol should be discarded.
625af618
AM
5650 If we get here we know we are making a PLT entry for this
5651 symbol, and in an executable we'd normally resolve
5652 relocations against this symbol to the PLT entry. Allow
5653 dynamic relocs if the reference is weak, and the dynamic
5654 relocs will not cause text relocation. */
d1eca1e4
AM
5655 else if (!h->ref_regular_nonweak
5656 && h->non_got_ref
5657 && h->type != STT_GNU_IFUNC
5658 && !htab->is_vxworks
5659 && !ppc_elf_hash_entry (h)->has_sda_refs
5660 && !readonly_dynrelocs (h))
625af618
AM
5661 h->non_got_ref = 0;
5662 }
d3e454b9 5663 h->protected_def = 0;
25dbc73a 5664 return TRUE;
252b5132 5665 }
25dbc73a 5666 else
a6aa5195 5667 h->plt.plist = NULL;
252b5132 5668
25dbc73a
AM
5669 /* If this is a weak symbol, and there is a real definition, the
5670 processor independent code will have arranged for us to see the
5671 real definition first, and we can just use the same value. */
5672 if (h->u.weakdef != NULL)
252b5132 5673 {
25dbc73a
AM
5674 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5675 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5676 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5677 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5678 if (ELIMINATE_COPY_RELOCS)
5679 h->non_got_ref = h->u.weakdef->non_got_ref;
5680 return TRUE;
5681 }
dc810e39 5682
25dbc73a
AM
5683 /* This is a reference to a symbol defined by a dynamic object which
5684 is not a function. */
252b5132 5685
25dbc73a
AM
5686 /* If we are creating a shared library, we must presume that the
5687 only references to the symbol are via the global offset table.
5688 For such cases we need not do anything here; the relocations will
5689 be handled correctly by relocate_section. */
0e1862bb 5690 if (bfd_link_pic (info))
d3e454b9
AM
5691 {
5692 h->protected_def = 0;
5693 return TRUE;
5694 }
252b5132 5695
25dbc73a
AM
5696 /* If there are no references to this symbol that do not use the
5697 GOT, we don't need to generate a copy reloc. */
5698 if (!h->non_got_ref)
d3e454b9
AM
5699 {
5700 h->protected_def = 0;
5701 return TRUE;
5702 }
5703
5704 /* Protected variables do not work with .dynbss. The copy in
5705 .dynbss won't be used by the shared library with the protected
5706 definition for the variable. Editing to PIC, or text relocations
5707 are preferable to an incorrect program. */
5708 if (h->protected_def)
5709 {
5710 if (ELIMINATE_COPY_RELOCS
5711 && ppc_elf_hash_entry (h)->has_addr16_ha
5712 && ppc_elf_hash_entry (h)->has_addr16_lo
5713 && htab->params->pic_fixup == 0
5714 && info->disable_target_specific_optimizations <= 1)
5715 htab->params->pic_fixup = 1;
5716 h->non_got_ref = 0;
5717 return TRUE;
5718 }
25dbc73a 5719
a127494f
AM
5720 /* If -z nocopyreloc was given, we won't generate them either. */
5721 if (info->nocopyreloc)
5722 {
5723 h->non_got_ref = 0;
5724 return TRUE;
5725 }
5726
cfd2c773
NS
5727 /* If we didn't find any dynamic relocs in read-only sections, then
5728 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5729 We can't do this if there are any small data relocations. This
5730 doesn't work on VxWorks, where we can not have dynamic
5731 relocations (other than copy and jump slot relocations) in an
5732 executable. */
4dc4a9a5 5733 if (ELIMINATE_COPY_RELOCS
cfd2c773 5734 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
5735 && !htab->is_vxworks
5736 && !h->def_regular
5737 && !readonly_dynrelocs (h))
25dbc73a 5738 {
625af618
AM
5739 h->non_got_ref = 0;
5740 return TRUE;
252b5132
RH
5741 }
5742
25dbc73a
AM
5743 /* We must allocate the symbol in our .dynbss section, which will
5744 become part of the .bss section of the executable. There will be
5745 an entry for this symbol in the .dynsym section. The dynamic
5746 object will contain position independent code, so all references
5747 from the dynamic object to this symbol will go through the global
5748 offset table. The dynamic linker will use the .dynsym entry to
5749 determine the address it must put in the global offset table, so
5750 both the dynamic object and the regular object will refer to the
5751 same memory location for the variable.
5752
4dc4a9a5
DJ
5753 Of course, if the symbol is referenced using SDAREL relocs, we
5754 must instead allocate it in .sbss. */
25dbc73a 5755
4dc4a9a5 5756 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
5757 s = htab->dynsbss;
5758 else
5759 s = htab->dynbss;
5760 BFD_ASSERT (s != NULL);
5761
5762 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5763 copy the initial value out of the dynamic object and into the
5764 runtime process image. We need to remember the offset into the
5765 .rela.bss section we are going to use. */
1d7e9d18 5766 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
25dbc73a
AM
5767 {
5768 asection *srel;
5769
4dc4a9a5 5770 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
5771 srel = htab->relsbss;
5772 else
5773 srel = htab->relbss;
5774 BFD_ASSERT (srel != NULL);
5775 srel->size += sizeof (Elf32_External_Rela);
5776 h->needs_copy = 1;
5777 }
7619e7c7 5778
6cabe1ea 5779 return _bfd_elf_adjust_dynamic_copy (info, h, s);
25dbc73a
AM
5780}
5781\f
ac39eb42
AM
5782/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5783 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5784 specifying the addend on the plt relocation. For -fpic code, the sym
5785 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5786 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
5787
5788static bfd_boolean
5789add_stub_sym (struct plt_entry *ent,
5790 struct elf_link_hash_entry *h,
ac39eb42 5791 struct bfd_link_info *info)
0ba07910
AM
5792{
5793 struct elf_link_hash_entry *sh;
5794 size_t len1, len2, len3;
5795 char *name;
ac39eb42
AM
5796 const char *stub;
5797 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5798
0e1862bb 5799 if (bfd_link_pic (info))
ac39eb42
AM
5800 stub = ".plt_pic32.";
5801 else
5802 stub = ".plt_call32.";
0ba07910
AM
5803
5804 len1 = strlen (h->root.root.string);
ac39eb42 5805 len2 = strlen (stub);
0ba07910
AM
5806 len3 = 0;
5807 if (ent->sec)
5808 len3 = strlen (ent->sec->name);
ac39eb42 5809 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
5810 if (name == NULL)
5811 return FALSE;
5812 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5813 if (ent->sec)
5814 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
5815 memcpy (name + 8 + len3, stub, len2);
5816 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
5817 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5818 if (sh == NULL)
5819 return FALSE;
5820 if (sh->root.type == bfd_link_hash_new)
5821 {
5822 sh->root.type = bfd_link_hash_defined;
5823 sh->root.u.def.section = htab->glink;
5824 sh->root.u.def.value = ent->glink_offset;
5825 sh->ref_regular = 1;
5826 sh->def_regular = 1;
5827 sh->ref_regular_nonweak = 1;
5828 sh->forced_local = 1;
5829 sh->non_elf = 0;
2ec55de3 5830 sh->root.linker_def = 1;
0ba07910
AM
5831 }
5832 return TRUE;
5833}
5834
3b36f7e6
AM
5835/* Allocate NEED contiguous space in .got, and return the offset.
5836 Handles allocation of the got header when crossing 32k. */
5837
5838static bfd_vma
5839allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5840{
5841 bfd_vma where;
4a3dc543 5842 unsigned int max_before_header;
3b36f7e6 5843
4a3dc543 5844 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
5845 {
5846 where = htab->got->size;
5847 htab->got->size += need;
5848 }
3b36f7e6
AM
5849 else
5850 {
4a3dc543
RS
5851 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5852 if (need <= htab->got_gap)
3b36f7e6 5853 {
4a3dc543
RS
5854 where = max_before_header - htab->got_gap;
5855 htab->got_gap -= need;
5856 }
5857 else
5858 {
5859 if (htab->got->size + need > max_before_header
5860 && htab->got->size <= max_before_header)
5861 {
5862 htab->got_gap = max_before_header - htab->got->size;
5863 htab->got->size = max_before_header + htab->got_header_size;
5864 }
5865 where = htab->got->size;
5866 htab->got->size += need;
3b36f7e6 5867 }
3b36f7e6
AM
5868 }
5869 return where;
5870}
5871
25dbc73a 5872/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 5873
b34976b6 5874static bfd_boolean
25dbc73a 5875allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 5876{
25dbc73a
AM
5877 struct bfd_link_info *info = inf;
5878 struct ppc_elf_link_hash_entry *eh;
7619e7c7 5879 struct ppc_elf_link_hash_table *htab;
6061a67d 5880 struct elf_dyn_relocs *p;
252b5132 5881
25dbc73a 5882 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5883 return TRUE;
252b5132 5884
7619e7c7 5885 htab = ppc_elf_hash_table (info);
e054468f
AM
5886 if (htab->elf.dynamic_sections_created
5887 || h->type == STT_GNU_IFUNC)
252b5132 5888 {
a6aa5195
AM
5889 struct plt_entry *ent;
5890 bfd_boolean doneone = FALSE;
28e99bb6 5891 bfd_vma plt_offset = 0, glink_offset = 0;
e054468f 5892 bfd_boolean dyn;
28e99bb6 5893
a6aa5195
AM
5894 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5895 if (ent->plt.refcount > 0)
5896 {
5897 /* Make sure this symbol is output as a dynamic symbol. */
5898 if (h->dynindx == -1
e054468f
AM
5899 && !h->forced_local
5900 && !h->def_regular
5901 && htab->elf.dynamic_sections_created)
a6aa5195
AM
5902 {
5903 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5904 return FALSE;
5905 }
252b5132 5906
e054468f 5907 dyn = htab->elf.dynamic_sections_created;
0e1862bb 5908 if (bfd_link_pic (info)
e054468f
AM
5909 || h->type == STT_GNU_IFUNC
5910 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
a6aa5195
AM
5911 {
5912 asection *s = htab->plt;
25f23106 5913 if (!dyn || h->dynindx == -1)
e054468f 5914 s = htab->iplt;
7619e7c7 5915
25f23106 5916 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
a6aa5195 5917 {
a6aa5195 5918 if (!doneone)
28e99bb6
AM
5919 {
5920 plt_offset = s->size;
5921 s->size += 4;
5922 }
5923 ent->plt.offset = plt_offset;
d7128ce4 5924
a6aa5195 5925 s = htab->glink;
0e1862bb 5926 if (!doneone || bfd_link_pic (info))
28e99bb6
AM
5927 {
5928 glink_offset = s->size;
5929 s->size += GLINK_ENTRY_SIZE;
a7f2871e 5930 if (h == htab->tls_get_addr
5446cbdf 5931 && !htab->params->no_tls_get_addr_opt)
a7f2871e 5932 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
28e99bb6
AM
5933 }
5934 if (!doneone
0e1862bb 5935 && !bfd_link_pic (info)
625af618 5936 && h->def_dynamic
a6aa5195
AM
5937 && !h->def_regular)
5938 {
5939 h->root.u.def.section = s;
28e99bb6 5940 h->root.u.def.value = glink_offset;
a6aa5195 5941 }
28e99bb6 5942 ent->glink_offset = glink_offset;
0ba07910 5943
5446cbdf 5944 if (htab->params->emit_stub_syms
ac39eb42 5945 && !add_stub_sym (ent, h, info))
0ba07910 5946 return FALSE;
a6aa5195
AM
5947 }
5948 else
5949 {
a6aa5195
AM
5950 if (!doneone)
5951 {
28e99bb6
AM
5952 /* If this is the first .plt entry, make room
5953 for the special first entry. */
5954 if (s->size == 0)
9d8504b1 5955 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
5956
5957 /* The PowerPC PLT is actually composed of two
5958 parts, the first part is 2 words (for a load
5959 and a jump), and then there is a remaining
5960 word available at the end. */
9d8504b1
PB
5961 plt_offset = (htab->plt_initial_entry_size
5962 + (htab->plt_slot_size
5963 * ((s->size
5964 - htab->plt_initial_entry_size)
5965 / htab->plt_entry_size)));
28e99bb6
AM
5966
5967 /* If this symbol is not defined in a regular
5968 file, and we are not generating a shared
5b914448 5969 library, then set the symbol to this location
de972ffa
AM
5970 in the .plt. This is to avoid text
5971 relocations, and is required to make
28e99bb6
AM
5972 function pointers compare as equal between
5973 the normal executable and the shared library. */
0e1862bb 5974 if (! bfd_link_pic (info)
625af618 5975 && h->def_dynamic
28e99bb6
AM
5976 && !h->def_regular)
5977 {
5978 h->root.u.def.section = s;
5979 h->root.u.def.value = plt_offset;
5980 }
5981
9d8504b1
PB
5982 /* Make room for this entry. */
5983 s->size += htab->plt_entry_size;
5984 /* After the 8192nd entry, room for two entries
5985 is allocated. */
4a3dc543 5986 if (htab->plt_type == PLT_OLD
9d8504b1
PB
5987 && (s->size - htab->plt_initial_entry_size)
5988 / htab->plt_entry_size
5989 > PLT_NUM_SINGLE_ENTRIES)
5990 s->size += htab->plt_entry_size;
a6aa5195 5991 }
28e99bb6 5992 ent->plt.offset = plt_offset;
a6aa5195 5993 }
25dbc73a 5994
a6aa5195
AM
5995 /* We also need to make an entry in the .rela.plt section. */
5996 if (!doneone)
5997 {
25f23106
AM
5998 if (!htab->elf.dynamic_sections_created
5999 || h->dynindx == -1)
e054468f
AM
6000 htab->reliplt->size += sizeof (Elf32_External_Rela);
6001 else
9d8504b1 6002 {
e054468f
AM
6003 htab->relplt->size += sizeof (Elf32_External_Rela);
6004
6005 if (htab->plt_type == PLT_VXWORKS)
9d8504b1 6006 {
e054468f 6007 /* Allocate space for the unloaded relocations. */
0e1862bb 6008 if (!bfd_link_pic (info)
e054468f 6009 && htab->elf.dynamic_sections_created)
9d8504b1 6010 {
e054468f
AM
6011 if (ent->plt.offset
6012 == (bfd_vma) htab->plt_initial_entry_size)
6013 {
6014 htab->srelplt2->size
6015 += (sizeof (Elf32_External_Rela)
6016 * VXWORKS_PLTRESOLVE_RELOCS);
6017 }
6018
9d8504b1 6019 htab->srelplt2->size
e054468f
AM
6020 += (sizeof (Elf32_External_Rela)
6021 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
9d8504b1
PB
6022 }
6023
e054468f
AM
6024 /* Every PLT entry has an associated GOT entry in
6025 .got.plt. */
6026 htab->sgotplt->size += 4;
9d8504b1 6027 }
9d8504b1 6028 }
a6aa5195
AM
6029 doneone = TRUE;
6030 }
6031 }
6032 else
6033 ent->plt.offset = (bfd_vma) -1;
a6aa5195 6034 }
2ce859a1
AM
6035 else
6036 ent->plt.offset = (bfd_vma) -1;
6037
6038 if (!doneone)
6039 {
6040 h->plt.plist = NULL;
6041 h->needs_plt = 0;
6042 }
25dbc73a
AM
6043 }
6044 else
6045 {
a6aa5195 6046 h->plt.plist = NULL;
25dbc73a
AM
6047 h->needs_plt = 0;
6048 }
6049
6050 eh = (struct ppc_elf_link_hash_entry *) h;
d3e454b9
AM
6051 if (eh->elf.got.refcount > 0
6052 || (ELIMINATE_COPY_RELOCS
6053 && !eh->elf.def_regular
6054 && eh->elf.protected_def
6055 && eh->has_addr16_ha
6056 && eh->has_addr16_lo
6057 && htab->params->pic_fixup > 0))
25dbc73a 6058 {
d6e14abc
AM
6059 bfd_boolean dyn;
6060 unsigned int need;
6061
25dbc73a
AM
6062 /* Make sure this symbol is output as a dynamic symbol. */
6063 if (eh->elf.dynindx == -1
b099ab9f 6064 && !eh->elf.forced_local
25f23106 6065 && eh->elf.type != STT_GNU_IFUNC
b099ab9f 6066 && htab->elf.dynamic_sections_created)
25dbc73a
AM
6067 {
6068 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 6069 return FALSE;
25dbc73a 6070 }
252b5132 6071
d6e14abc
AM
6072 need = 0;
6073 if ((eh->tls_mask & TLS_TLS) != 0)
25dbc73a 6074 {
d6e14abc 6075 if ((eh->tls_mask & TLS_LD) != 0)
252b5132 6076 {
d6e14abc
AM
6077 if (!eh->elf.def_dynamic)
6078 /* We'll just use htab->tlsld_got.offset. This should
6079 always be the case. It's a little odd if we have
6080 a local dynamic reloc against a non-local symbol. */
6081 htab->tlsld_got.refcount += 1;
6082 else
3b36f7e6 6083 need += 8;
252b5132 6084 }
d6e14abc
AM
6085 if ((eh->tls_mask & TLS_GD) != 0)
6086 need += 8;
6087 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6088 need += 4;
6089 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 6090 need += 4;
d6e14abc
AM
6091 }
6092 else
6093 need += 4;
6094 if (need == 0)
6095 eh->elf.got.offset = (bfd_vma) -1;
6096 else
6097 {
3b36f7e6 6098 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a 6099 dyn = htab->elf.dynamic_sections_created;
0e1862bb 6100 if ((bfd_link_pic (info)
25dbc73a
AM
6101 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6102 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6103 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 6104 {
91e21fb7 6105 asection *rsec = htab->relgot;
0bed072f
AM
6106
6107 if (eh->elf.type == STT_GNU_IFUNC)
6108 rsec = htab->reliplt;
3b36f7e6
AM
6109 /* All the entries we allocated need relocs.
6110 Except LD only needs one. */
d6e14abc
AM
6111 if ((eh->tls_mask & TLS_LD) != 0
6112 && eh->elf.def_dynamic)
3b36f7e6 6113 need -= 4;
25f23106 6114 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 6115 }
25dbc73a
AM
6116 }
6117 }
6118 else
6119 eh->elf.got.offset = (bfd_vma) -1;
252b5132 6120
b099ab9f 6121 if (eh->dyn_relocs == NULL
de972ffa 6122 || !htab->elf.dynamic_sections_created)
25dbc73a 6123 return TRUE;
252b5132 6124
25dbc73a
AM
6125 /* In the shared -Bsymbolic case, discard space allocated for
6126 dynamic pc-relative relocs against symbols which turn out to be
6127 defined in regular objects. For the normal shared case, discard
6128 space for relocs that have become local due to symbol visibility
6129 changes. */
6130
0e1862bb 6131 if (bfd_link_pic (info))
25dbc73a
AM
6132 {
6133 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 6134 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
6135 generated via assembly. We want calls to protected symbols to
6136 resolve directly to the function rather than going via the plt.
6137 If people want function pointer comparisons to work as expected
6138 then they should avoid writing weird assembly. */
6139 if (SYMBOL_CALLS_LOCAL (info, h))
6140 {
6061a67d 6141 struct elf_dyn_relocs **pp;
25dbc73a
AM
6142
6143 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 6144 {
25dbc73a
AM
6145 p->count -= p->pc_count;
6146 p->pc_count = 0;
6147 if (p->count == 0)
6148 *pp = p->next;
6149 else
6150 pp = &p->next;
252b5132 6151 }
25dbc73a 6152 }
252b5132 6153
3348747a
NS
6154 if (htab->is_vxworks)
6155 {
6061a67d 6156 struct elf_dyn_relocs **pp;
3348747a
NS
6157
6158 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6159 {
6160 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6161 *pp = p->next;
6162 else
6163 pp = &p->next;
6164 }
6165 }
6166
89200bf8
AM
6167 /* Discard relocs on undefined symbols that must be local. */
6168 if (eh->dyn_relocs != NULL
6169 && h->root.type == bfd_link_hash_undefined
6170 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6171 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6172 eh->dyn_relocs = NULL;
6173
25dbc73a
AM
6174 /* Also discard relocs on undefined weak syms with non-default
6175 visibility. */
cab87ef9
AM
6176 if (eh->dyn_relocs != NULL
6177 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 6178 {
dfbb6ac9
AM
6179 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6180 eh->dyn_relocs = NULL;
6181
6182 /* Make sure undefined weak symbols are output as a dynamic
6183 symbol in PIEs. */
6184 else if (h->dynindx == -1
e054468f
AM
6185 && !h->forced_local
6186 && !h->def_regular)
dfbb6ac9
AM
6187 {
6188 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6189 return FALSE;
6190 }
25dbc73a
AM
6191 }
6192 }
6193 else if (ELIMINATE_COPY_RELOCS)
6194 {
6195 /* For the non-shared case, discard space for relocs against
6196 symbols which turn out to need copy relocs or are not
6197 dynamic. */
7619e7c7 6198
25dbc73a 6199 if (!h->non_got_ref
d3e454b9
AM
6200 && !h->def_regular
6201 && !(h->protected_def
6202 && eh->has_addr16_ha
6203 && eh->has_addr16_lo
6204 && htab->params->pic_fixup > 0))
25dbc73a
AM
6205 {
6206 /* Make sure this symbol is output as a dynamic symbol.
6207 Undefined weak syms won't yet be marked as dynamic. */
6208 if (h->dynindx == -1
25f23106 6209 && !h->forced_local)
25dbc73a
AM
6210 {
6211 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6212 return FALSE;
6213 }
7619e7c7 6214
25dbc73a
AM
6215 /* If that succeeded, we know we'll be keeping all the
6216 relocs. */
6217 if (h->dynindx != -1)
6218 goto keep;
6219 }
252b5132 6220
25dbc73a 6221 eh->dyn_relocs = NULL;
252b5132 6222
25dbc73a
AM
6223 keep: ;
6224 }
252b5132 6225
25dbc73a
AM
6226 /* Finally, allocate space. */
6227 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6228 {
6229 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6230 if (eh->elf.type == STT_GNU_IFUNC)
25f23106 6231 sreloc = htab->reliplt;
25dbc73a
AM
6232 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6233 }
252b5132 6234
25dbc73a
AM
6235 return TRUE;
6236}
7619e7c7 6237
625af618
AM
6238/* Set DF_TEXTREL if we find any dynamic relocs that apply to
6239 read-only sections. */
7619e7c7 6240
25dbc73a 6241static bfd_boolean
625af618 6242maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 6243{
25dbc73a
AM
6244 if (h->root.type == bfd_link_hash_indirect)
6245 return TRUE;
252b5132 6246
625af618 6247 if (readonly_dynrelocs (h))
25dbc73a 6248 {
625af618 6249 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 6250
625af618
AM
6251 /* Not an error, just cut short the traversal. */
6252 return FALSE;
25dbc73a
AM
6253 }
6254 return TRUE;
6255}
6256
6177242a
AM
6257static const unsigned char glink_eh_frame_cie[] =
6258{
6259 0, 0, 0, 16, /* length. */
6260 0, 0, 0, 0, /* id. */
6261 1, /* CIE version. */
6262 'z', 'R', 0, /* Augmentation string. */
6263 4, /* Code alignment. */
6264 0x7c, /* Data alignment. */
6265 65, /* RA reg. */
6266 1, /* Augmentation size. */
6267 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6268 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6269};
6270
25dbc73a
AM
6271/* Set the sizes of the dynamic sections. */
6272
6273static bfd_boolean
93d1b056 6274ppc_elf_size_dynamic_sections (bfd *output_bfd,
25dbc73a
AM
6275 struct bfd_link_info *info)
6276{
6277 struct ppc_elf_link_hash_table *htab;
6278 asection *s;
6279 bfd_boolean relocs;
6280 bfd *ibfd;
7fce784e 6281
252b5132 6282#ifdef DEBUG
25dbc73a 6283 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 6284#endif
252b5132 6285
25dbc73a
AM
6286 htab = ppc_elf_hash_table (info);
6287 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 6288
25dbc73a
AM
6289 if (elf_hash_table (info)->dynamic_sections_created)
6290 {
6291 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 6292 if (bfd_link_executable (info) && !info->nointerp)
25dbc73a 6293 {
3d4d4302 6294 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
25dbc73a
AM
6295 BFD_ASSERT (s != NULL);
6296 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6297 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6298 }
6299 }
252b5132 6300
4a3dc543 6301 if (htab->plt_type == PLT_OLD)
d7128ce4 6302 htab->got_header_size = 16;
4a3dc543 6303 else if (htab->plt_type == PLT_NEW)
d7128ce4 6304 htab->got_header_size = 12;
252b5132 6305
25dbc73a
AM
6306 /* Set up .got offsets for local syms, and space for local dynamic
6307 relocs. */
c72f2fb2 6308 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
25dbc73a
AM
6309 {
6310 bfd_signed_vma *local_got;
6311 bfd_signed_vma *end_local_got;
e054468f
AM
6312 struct plt_entry **local_plt;
6313 struct plt_entry **end_local_plt;
25dbc73a
AM
6314 char *lgot_masks;
6315 bfd_size_type locsymcount;
6316 Elf_Internal_Shdr *symtab_hdr;
7fce784e 6317
0c8d6e5c 6318 if (!is_ppc_elf (ibfd))
25dbc73a 6319 continue;
7fce784e 6320
25dbc73a
AM
6321 for (s = ibfd->sections; s != NULL; s = s->next)
6322 {
f95f8542 6323 struct ppc_dyn_relocs *p;
252b5132 6324
f95f8542 6325 for (p = ((struct ppc_dyn_relocs *)
25dbc73a
AM
6326 elf_section_data (s)->local_dynrel);
6327 p != NULL;
6328 p = p->next)
6329 {
6330 if (!bfd_is_abs_section (p->sec)
6331 && bfd_is_abs_section (p->sec->output_section))
6332 {
6333 /* Input section has been discarded, either because
6334 it is a copy of a linkonce section or due to
6335 linker script /DISCARD/, so we'll be discarding
6336 the relocs too. */
7fce784e 6337 }
3348747a
NS
6338 else if (htab->is_vxworks
6339 && strcmp (p->sec->output_section->name,
6340 ".tls_vars") == 0)
6341 {
6342 /* Relocations in vxworks .tls_vars sections are
6343 handled specially by the loader. */
6344 }
25dbc73a 6345 else if (p->count != 0)
7fce784e 6346 {
25f23106 6347 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6348 if (p->ifunc)
25f23106
AM
6349 sreloc = htab->reliplt;
6350 sreloc->size += p->count * sizeof (Elf32_External_Rela);
25dbc73a
AM
6351 if ((p->sec->output_section->flags
6352 & (SEC_READONLY | SEC_ALLOC))
6353 == (SEC_READONLY | SEC_ALLOC))
6354 info->flags |= DF_TEXTREL;
7fce784e 6355 }
252b5132 6356 }
252b5132 6357 }
252b5132 6358
25dbc73a
AM
6359 local_got = elf_local_got_refcounts (ibfd);
6360 if (!local_got)
6361 continue;
252b5132 6362
0ffa91dd 6363 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
6364 locsymcount = symtab_hdr->sh_info;
6365 end_local_got = local_got + locsymcount;
e054468f
AM
6366 local_plt = (struct plt_entry **) end_local_got;
6367 end_local_plt = local_plt + locsymcount;
6368 lgot_masks = (char *) end_local_plt;
91d6fa6a 6369
25dbc73a
AM
6370 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6371 if (*local_got > 0)
6372 {
d6e14abc
AM
6373 unsigned int need = 0;
6374 if ((*lgot_masks & TLS_TLS) != 0)
25dbc73a 6375 {
d6e14abc
AM
6376 if ((*lgot_masks & TLS_GD) != 0)
6377 need += 8;
6378 if ((*lgot_masks & TLS_LD) != 0)
6379 htab->tlsld_got.refcount += 1;
6380 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6381 need += 4;
6382 if ((*lgot_masks & TLS_DTPREL) != 0)
6383 need += 4;
25dbc73a 6384 }
d6e14abc
AM
6385 else
6386 need += 4;
6387 if (need == 0)
6388 *local_got = (bfd_vma) -1;
25dbc73a
AM
6389 else
6390 {
3b36f7e6 6391 *local_got = allocate_got (htab, need);
0e1862bb 6392 if (bfd_link_pic (info))
0bed072f
AM
6393 {
6394 asection *srel = htab->relgot;
6395 if ((*lgot_masks & PLT_IFUNC) != 0)
6396 srel = htab->reliplt;
6397 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6398 }
25dbc73a
AM
6399 }
6400 }
6401 else
6402 *local_got = (bfd_vma) -1;
e054468f
AM
6403
6404 if (htab->is_vxworks)
6405 continue;
6406
6407 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6408 for (; local_plt < end_local_plt; ++local_plt)
6409 {
6410 struct plt_entry *ent;
6411 bfd_boolean doneone = FALSE;
6412 bfd_vma plt_offset = 0, glink_offset = 0;
6413
6414 for (ent = *local_plt; ent != NULL; ent = ent->next)
6415 if (ent->plt.refcount > 0)
6416 {
91d6fa6a 6417 s = htab->iplt;
e054468f
AM
6418
6419 if (!doneone)
6420 {
6421 plt_offset = s->size;
6422 s->size += 4;
6423 }
6424 ent->plt.offset = plt_offset;
6425
6426 s = htab->glink;
0e1862bb 6427 if (!doneone || bfd_link_pic (info))
e054468f
AM
6428 {
6429 glink_offset = s->size;
6430 s->size += GLINK_ENTRY_SIZE;
6431 }
6432 ent->glink_offset = glink_offset;
6433
6434 if (!doneone)
6435 {
25f23106 6436 htab->reliplt->size += sizeof (Elf32_External_Rela);
e054468f
AM
6437 doneone = TRUE;
6438 }
6439 }
6440 else
6441 ent->plt.offset = (bfd_vma) -1;
6442 }
25dbc73a 6443 }
252b5132 6444
b7fcf6f6
AM
6445 /* Allocate space for global sym dynamic relocs. */
6446 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6447
3b36f7e6
AM
6448 if (htab->tlsld_got.refcount > 0)
6449 {
6450 htab->tlsld_got.offset = allocate_got (htab, 8);
0e1862bb 6451 if (bfd_link_pic (info))
3b36f7e6
AM
6452 htab->relgot->size += sizeof (Elf32_External_Rela);
6453 }
6454 else
6455 htab->tlsld_got.offset = (bfd_vma) -1;
6456
4a3dc543 6457 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
6458 {
6459 unsigned int g_o_t = 32768;
6460
4d962050
AM
6461 /* If we haven't allocated the header, do so now. When we get here,
6462 for old plt/got the got size will be 0 to 32764 (not allocated),
6463 or 32780 to 65536 (header allocated). For new plt/got, the
6464 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM
6465 if (htab->got->size <= 32768)
6466 {
6467 g_o_t = htab->got->size;
4a3dc543 6468 if (htab->plt_type == PLT_OLD)
4d962050 6469 g_o_t += 4;
3b36f7e6
AM
6470 htab->got->size += htab->got_header_size;
6471 }
3b36f7e6
AM
6472
6473 htab->elf.hgot->root.u.def.value = g_o_t;
6474 }
0e1862bb 6475 if (bfd_link_pic (info))
bd6c6e2b
AM
6476 {
6477 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
93d1b056
AM
6478
6479 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6480 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
bd6c6e2b 6481 }
15bfcc77
AM
6482 if (info->emitrelocations)
6483 {
6484 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6485
6486 if (sda != NULL && sda->ref_regular)
6487 sda->root.u.def.section->flags |= SEC_KEEP;
6488 sda = htab->sdata[1].sym;
6489 if (sda != NULL && sda->ref_regular)
6490 sda->root.u.def.section->flags |= SEC_KEEP;
6491 }
3b36f7e6 6492
e054468f
AM
6493 if (htab->glink != NULL
6494 && htab->glink->size != 0
6495 && htab->elf.dynamic_sections_created)
d7128ce4
AM
6496 {
6497 htab->glink_pltresolve = htab->glink->size;
888a7fc3
AM
6498 /* Space for the branch table. ??? We don't need entries for
6499 non-dynamic symbols in this table. This case can arise with
6500 static ifuncs or forced local ifuncs. */
86b9da88
AM
6501 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6502 /* Pad out to align the start of PLTresolve. */
5446cbdf
AM
6503 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6504 ? 63 : 15);
d7128ce4 6505 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910 6506
5446cbdf 6507 if (htab->params->emit_stub_syms)
0ba07910
AM
6508 {
6509 struct elf_link_hash_entry *sh;
6510 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6511 TRUE, FALSE, FALSE);
6512 if (sh == NULL)
6513 return FALSE;
6514 if (sh->root.type == bfd_link_hash_new)
6515 {
6516 sh->root.type = bfd_link_hash_defined;
6517 sh->root.u.def.section = htab->glink;
6518 sh->root.u.def.value = htab->glink_pltresolve;
6519 sh->ref_regular = 1;
6520 sh->def_regular = 1;
6521 sh->ref_regular_nonweak = 1;
6522 sh->forced_local = 1;
6523 sh->non_elf = 0;
2ec55de3 6524 sh->root.linker_def = 1;
0ba07910
AM
6525 }
6526 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6527 TRUE, FALSE, FALSE);
6528 if (sh == NULL)
6529 return FALSE;
6530 if (sh->root.type == bfd_link_hash_new)
6531 {
6532 sh->root.type = bfd_link_hash_defined;
6533 sh->root.u.def.section = htab->glink;
6534 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6535 sh->ref_regular = 1;
6536 sh->def_regular = 1;
6537 sh->ref_regular_nonweak = 1;
6538 sh->forced_local = 1;
6539 sh->non_elf = 0;
2ec55de3 6540 sh->root.linker_def = 1;
0ba07910
AM
6541 }
6542 }
d7128ce4
AM
6543 }
6544
6177242a
AM
6545 if (htab->glink != NULL
6546 && htab->glink->size != 0
6547 && htab->glink_eh_frame != NULL
9a2a56cc
AM
6548 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6549 && _bfd_elf_eh_frame_present (info))
6177242a
AM
6550 {
6551 s = htab->glink_eh_frame;
6552 s->size = sizeof (glink_eh_frame_cie) + 20;
0e1862bb 6553 if (bfd_link_pic (info))
6177242a
AM
6554 {
6555 s->size += 4;
6556 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6557 s->size += 4;
6558 }
6559 }
6560
25dbc73a
AM
6561 /* We've now determined the sizes of the various dynamic sections.
6562 Allocate memory for them. */
6563 relocs = FALSE;
6564 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 6565 {
9d8504b1
PB
6566 bfd_boolean strip_section = TRUE;
6567
25dbc73a
AM
6568 if ((s->flags & SEC_LINKER_CREATED) == 0)
6569 continue;
252b5132 6570
25dbc73a 6571 if (s == htab->plt
e054468f 6572 || s == htab->got)
25dbc73a 6573 {
9d8504b1
PB
6574 /* We'd like to strip these sections if they aren't needed, but if
6575 we've exported dynamic symbols from them we must leave them.
6576 It's too late to tell BFD to get rid of the symbols. */
e054468f 6577 if (htab->elf.hplt != NULL)
9d8504b1 6578 strip_section = FALSE;
25dbc73a
AM
6579 /* Strip this section if we don't need it; see the
6580 comment below. */
6581 }
e054468f
AM
6582 else if (s == htab->iplt
6583 || s == htab->glink
6177242a 6584 || s == htab->glink_eh_frame
e054468f
AM
6585 || s == htab->sgotplt
6586 || s == htab->sbss
6587 || s == htab->dynbss
15bfcc77 6588 || s == htab->dynsbss)
25dbc73a 6589 {
c9a2f333 6590 /* Strip these too. */
25dbc73a 6591 }
15bfcc77
AM
6592 else if (s == htab->sdata[0].section
6593 || s == htab->sdata[1].section)
6594 {
6595 strip_section = (s->flags & SEC_KEEP) == 0;
6596 }
a0f49396
NC
6597 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6598 ".rela"))
25dbc73a 6599 {
c456f082 6600 if (s->size != 0)
25dbc73a
AM
6601 {
6602 /* Remember whether there are any relocation sections. */
6603 relocs = TRUE;
252b5132 6604
25dbc73a
AM
6605 /* We use the reloc_count field as a counter if we need
6606 to copy relocs into the output file. */
6607 s->reloc_count = 0;
252b5132
RH
6608 }
6609 }
25dbc73a
AM
6610 else
6611 {
6612 /* It's not one of our sections, so don't allocate space. */
6613 continue;
6614 }
252b5132 6615
9d8504b1 6616 if (s->size == 0 && strip_section)
25dbc73a 6617 {
c456f082
AM
6618 /* If we don't need this section, strip it from the
6619 output file. This is mostly to handle .rela.bss and
6620 .rela.plt. We must create both sections in
6621 create_dynamic_sections, because they must be created
6622 before the linker maps input sections to output
6623 sections. The linker does that before
6624 adjust_dynamic_symbol is called, and it is that
6625 function which decides whether anything needs to go
6626 into these sections. */
8423293d 6627 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
6628 continue;
6629 }
7fce784e 6630
d7128ce4 6631 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
6632 continue;
6633
25dbc73a
AM
6634 /* Allocate memory for the section contents. */
6635 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6636 if (s->contents == NULL)
6637 return FALSE;
6638 }
252b5132 6639
25dbc73a 6640 if (htab->elf.dynamic_sections_created)
7619e7c7 6641 {
25dbc73a
AM
6642 /* Add some entries to the .dynamic section. We fill in the
6643 values later, in ppc_elf_finish_dynamic_sections, but we
6644 must add the entries now so that we get the correct size for
6645 the .dynamic section. The DT_DEBUG entry is filled in by the
6646 dynamic linker and used by the debugger. */
6647#define add_dynamic_entry(TAG, VAL) \
6648 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 6649
0e1862bb 6650 if (bfd_link_executable (info))
7619e7c7 6651 {
25dbc73a
AM
6652 if (!add_dynamic_entry (DT_DEBUG, 0))
6653 return FALSE;
7619e7c7
AM
6654 }
6655
25dbc73a 6656 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 6657 {
25dbc73a
AM
6658 if (!add_dynamic_entry (DT_PLTGOT, 0)
6659 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6660 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6661 || !add_dynamic_entry (DT_JMPREL, 0))
6662 return FALSE;
6663 }
7619e7c7 6664
c7e17e05
AM
6665 if (htab->plt_type == PLT_NEW
6666 && htab->glink != NULL
6667 && htab->glink->size != 0)
d7128ce4 6668 {
1fe44d79 6669 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4 6670 return FALSE;
5446cbdf 6671 if (!htab->params->no_tls_get_addr_opt
a7f2871e
AM
6672 && htab->tls_get_addr != NULL
6673 && htab->tls_get_addr->plt.plist != NULL
e8910a83 6674 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
a7f2871e 6675 return FALSE;
d7128ce4
AM
6676 }
6677
25dbc73a
AM
6678 if (relocs)
6679 {
6680 if (!add_dynamic_entry (DT_RELA, 0)
6681 || !add_dynamic_entry (DT_RELASZ, 0)
6682 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6683 return FALSE;
6684 }
7619e7c7 6685
25dbc73a
AM
6686 /* If any dynamic relocs apply to a read-only section, then we
6687 need a DT_TEXTREL entry. */
6688 if ((info->flags & DF_TEXTREL) == 0)
625af618 6689 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 6690 info);
7619e7c7 6691
25dbc73a
AM
6692 if ((info->flags & DF_TEXTREL) != 0)
6693 {
6694 if (!add_dynamic_entry (DT_TEXTREL, 0))
6695 return FALSE;
7619e7c7 6696 }
7a2b07ff
NS
6697 if (htab->is_vxworks
6698 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6699 return FALSE;
6700 }
25dbc73a
AM
6701#undef add_dynamic_entry
6702
7e01508c
AM
6703 if (htab->glink_eh_frame != NULL
6704 && htab->glink_eh_frame->contents != NULL)
6705 {
6706 unsigned char *p = htab->glink_eh_frame->contents;
6707 bfd_vma val;
6708
6709 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6710 /* CIE length (rewrite in case little-endian). */
6711 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6712 p += sizeof (glink_eh_frame_cie);
6713 /* FDE length. */
6714 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6715 bfd_put_32 (htab->elf.dynobj, val, p);
6716 p += 4;
6717 /* CIE pointer. */
6718 val = p - htab->glink_eh_frame->contents;
6719 bfd_put_32 (htab->elf.dynobj, val, p);
6720 p += 4;
6721 /* Offset to .glink. Set later. */
6722 p += 4;
6723 /* .glink size. */
6724 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6725 p += 4;
6726 /* Augmentation. */
6727 p += 1;
6728
0e1862bb 6729 if (bfd_link_pic (info)
7e01508c
AM
6730 && htab->elf.dynamic_sections_created)
6731 {
6732 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6733 if (adv < 64)
6734 *p++ = DW_CFA_advance_loc + adv;
6735 else if (adv < 256)
6736 {
6737 *p++ = DW_CFA_advance_loc1;
6738 *p++ = adv;
6739 }
6740 else if (adv < 65536)
6741 {
6742 *p++ = DW_CFA_advance_loc2;
6743 bfd_put_16 (htab->elf.dynobj, adv, p);
6744 p += 2;
6745 }
6746 else
6747 {
6748 *p++ = DW_CFA_advance_loc4;
6749 bfd_put_32 (htab->elf.dynobj, adv, p);
6750 p += 4;
6751 }
6752 *p++ = DW_CFA_register;
6753 *p++ = 65;
6754 p++;
6755 *p++ = DW_CFA_advance_loc + 4;
6756 *p++ = DW_CFA_restore_extended;
6757 *p++ = 65;
6758 }
6759 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6760 == htab->glink_eh_frame->size);
6761 }
6762
7619e7c7
AM
6763 return TRUE;
6764}
0eb4a168 6765
93d1b056
AM
6766/* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6767 if it looks like nothing is using them. */
6768
6769static void
6770maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6771{
6772 struct elf_link_hash_entry *sda = lsect->sym;
6773
6774 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6775 {
6776 asection *s;
6777
6778 s = bfd_get_section_by_name (output_bfd, lsect->name);
6779 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6780 {
6781 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6782 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6783 {
6784 sda->def_regular = 0;
6785 /* This is somewhat magic. See elf_link_output_extsym. */
6786 sda->ref_dynamic = 1;
6787 sda->forced_local = 0;
6788 }
6789 }
6790 }
6791}
6792
6793void
6794ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6795{
6796 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6797
6798 if (htab != NULL)
6799 {
6800 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6801 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6802 }
6803}
6804
6805
0eb4a168
AM
6806/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6807
6808static bfd_boolean
6809ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6810{
6811 if (h->plt.plist != NULL
6812 && !h->def_regular
6813 && (!h->pointer_equality_needed
6814 || !h->ref_regular_nonweak))
6815 return FALSE;
6816
6817 return _bfd_elf_hash_symbol (h);
6818}
25dbc73a
AM
6819\f
6820#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6821
01017ef8
NS
6822/* Relaxation trampolines. r12 is available for clobbering (r11, is
6823 used for some functions that are allowed to break the ABI). */
25dbc73a
AM
6824static const int shared_stub_entry[] =
6825 {
6826 0x7c0802a6, /* mflr 0 */
6827 0x429f0005, /* bcl 20, 31, .Lxxx */
01017ef8
NS
6828 0x7d8802a6, /* mflr 12 */
6829 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
53291d1f 6830 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
25dbc73a 6831 0x7c0803a6, /* mtlr 0 */
01017ef8 6832 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6833 0x4e800420, /* bctr */
6834 };
6835
6836static const int stub_entry[] =
6837 {
01017ef8
NS
6838 0x3d800000, /* lis 12,xxx@ha */
6839 0x398c0000, /* addi 12,12,xxx@l */
6840 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6841 0x4e800420, /* bctr */
6842 };
6843
5446cbdf
AM
6844struct ppc_elf_relax_info
6845{
6846 unsigned int workaround_size;
d3e454b9 6847 unsigned int picfixup_size;
5446cbdf
AM
6848};
6849
6850/* This function implements long branch trampolines, and the ppc476
6851 icache bug workaround. Any section needing trampolines or patch
6852 space for the workaround has its size extended so that we can
53291d1f 6853 add trampolines at the end of the section. */
5446cbdf 6854
25dbc73a
AM
6855static bfd_boolean
6856ppc_elf_relax_section (bfd *abfd,
6857 asection *isec,
6858 struct bfd_link_info *link_info,
6859 bfd_boolean *again)
6860{
d3e454b9 6861 struct one_branch_fixup
25dbc73a 6862 {
d3e454b9 6863 struct one_branch_fixup *next;
25dbc73a 6864 asection *tsec;
01017ef8
NS
6865 /* Final link, can use the symbol offset. For a
6866 relocatable link we use the symbol's index. */
25dbc73a
AM
6867 bfd_vma toff;
6868 bfd_vma trampoff;
6869 };
7619e7c7 6870
25dbc73a
AM
6871 Elf_Internal_Shdr *symtab_hdr;
6872 bfd_byte *contents = NULL;
6873 Elf_Internal_Sym *isymbuf = NULL;
6874 Elf_Internal_Rela *internal_relocs = NULL;
5446cbdf 6875 Elf_Internal_Rela *irel, *irelend = NULL;
d3e454b9 6876 struct one_branch_fixup *branch_fixups = NULL;
5446cbdf 6877 struct ppc_elf_relax_info *relax_info = NULL;
9bc4e62b 6878 unsigned changes = 0;
5446cbdf 6879 bfd_boolean workaround_change;
d7128ce4 6880 struct ppc_elf_link_hash_table *htab;
d3e454b9 6881 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
a6aa5195 6882 asection *got2;
50248c89 6883 bfd_boolean maybe_pasted;
7619e7c7 6884
25dbc73a 6885 *again = FALSE;
7619e7c7 6886
5446cbdf 6887 /* No need to do anything with non-alloc or non-code sections. */
c87b5a93 6888 if ((isec->flags & SEC_ALLOC) == 0
a8ad78a7 6889 || (isec->flags & SEC_CODE) == 0
5446cbdf
AM
6890 || (isec->flags & SEC_LINKER_CREATED) != 0
6891 || isec->size < 4)
25dbc73a 6892 return TRUE;
7619e7c7 6893
c8a1f254
NS
6894 /* We cannot represent the required PIC relocs in the output, so don't
6895 do anything. The linker doesn't support mixing -shared and -r
6896 anyway. */
0e1862bb 6897 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
795bc6b3 6898 return TRUE;
5b914448 6899
5446cbdf
AM
6900 htab = ppc_elf_hash_table (link_info);
6901 if (htab == NULL)
6902 return TRUE;
6903
6904 isec->size = (isec->size + 3) & -4;
6905 if (isec->rawsize == 0)
6906 isec->rawsize = isec->size;
6907 trampbase = isec->size;
6908
53291d1f
AM
6909 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6910 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6911 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6912
d3e454b9
AM
6913 if (htab->params->ppc476_workaround
6914 || htab->params->pic_fixup > 0)
5446cbdf
AM
6915 {
6916 if (elf_section_data (isec)->sec_info == NULL)
6917 {
5446cbdf
AM
6918 elf_section_data (isec)->sec_info
6919 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6920 if (elf_section_data (isec)->sec_info == NULL)
6921 return FALSE;
6922 }
6923 relax_info = elf_section_data (isec)->sec_info;
6924 trampbase -= relax_info->workaround_size;
6925 }
6926
50248c89
AM
6927 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6928 || strcmp (isec->output_section->name, ".fini") == 0);
25dbc73a 6929 /* Space for a branch around any trampolines. */
5446cbdf
AM
6930 trampoff = trampbase;
6931 if (maybe_pasted && trampbase == isec->rawsize)
50248c89 6932 trampoff += 4;
7619e7c7 6933
0ffa91dd 6934 symtab_hdr = &elf_symtab_hdr (abfd);
d3e454b9
AM
6935 picfixup_size = 0;
6936 if (htab->params->branch_trampolines
6937 || htab->params->pic_fixup > 0)
7619e7c7 6938 {
5446cbdf
AM
6939 /* Get a copy of the native relocations. */
6940 if (isec->reloc_count != 0)
25dbc73a 6941 {
5446cbdf
AM
6942 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6943 link_info->keep_memory);
6944 if (internal_relocs == NULL)
6945 goto error_return;
25dbc73a 6946 }
7619e7c7 6947
5446cbdf
AM
6948 got2 = bfd_get_section_by_name (abfd, ".got2");
6949
6950 irelend = internal_relocs + isec->reloc_count;
6951 for (irel = internal_relocs; irel < irelend; irel++)
25dbc73a 6952 {
5446cbdf
AM
6953 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6954 bfd_vma toff, roff;
6955 asection *tsec;
d3e454b9 6956 struct one_branch_fixup *f;
5446cbdf 6957 size_t insn_offset = 0;
d3e454b9 6958 bfd_vma max_branch_offset = 0, val;
5446cbdf
AM
6959 bfd_byte *hit_addr;
6960 unsigned long t0;
6961 struct elf_link_hash_entry *h;
6962 struct plt_entry **plist;
6963 unsigned char sym_type;
6964
6965 switch (r_type)
6966 {
6967 case R_PPC_REL24:
6968 case R_PPC_LOCAL24PC:
6969 case R_PPC_PLTREL24:
6970 max_branch_offset = 1 << 25;
6971 break;
6972
6973 case R_PPC_REL14:
6974 case R_PPC_REL14_BRTAKEN:
6975 case R_PPC_REL14_BRNTAKEN:
6976 max_branch_offset = 1 << 15;
6977 break;
7fce784e 6978
d3e454b9
AM
6979 case R_PPC_ADDR16_HA:
6980 if (htab->params->pic_fixup > 0)
6981 break;
6982 continue;
6983
5446cbdf
AM
6984 default:
6985 continue;
6986 }
6987
6988 /* Get the value of the symbol referred to by the reloc. */
6989 h = NULL;
6990 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
25dbc73a 6991 {
5446cbdf
AM
6992 /* A local symbol. */
6993 Elf_Internal_Sym *isym;
6994
6995 /* Read this BFD's local symbols. */
25dbc73a 6996 if (isymbuf == NULL)
5446cbdf
AM
6997 {
6998 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6999 if (isymbuf == NULL)
7000 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7001 symtab_hdr->sh_info, 0,
7002 NULL, NULL, NULL);
7003 if (isymbuf == 0)
7004 goto error_return;
7005 }
7006 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7007 if (isym->st_shndx == SHN_UNDEF)
7008 tsec = bfd_und_section_ptr;
7009 else if (isym->st_shndx == SHN_ABS)
7010 tsec = bfd_abs_section_ptr;
7011 else if (isym->st_shndx == SHN_COMMON)
7012 tsec = bfd_com_section_ptr;
7013 else
7014 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7015
7016 toff = isym->st_value;
7017 sym_type = ELF_ST_TYPE (isym->st_info);
25dbc73a 7018 }
25dbc73a 7019 else
5446cbdf
AM
7020 {
7021 /* Global symbol handling. */
7022 unsigned long indx;
7fce784e 7023
5446cbdf
AM
7024 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7025 h = elf_sym_hashes (abfd)[indx];
7619e7c7 7026
5446cbdf
AM
7027 while (h->root.type == bfd_link_hash_indirect
7028 || h->root.type == bfd_link_hash_warning)
7029 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 7030
5446cbdf
AM
7031 if (h->root.type == bfd_link_hash_defined
7032 || h->root.type == bfd_link_hash_defweak)
7033 {
7034 tsec = h->root.u.def.section;
7035 toff = h->root.u.def.value;
7036 }
7037 else if (h->root.type == bfd_link_hash_undefined
7038 || h->root.type == bfd_link_hash_undefweak)
7039 {
7040 tsec = bfd_und_section_ptr;
0e1862bb 7041 toff = bfd_link_relocatable (link_info) ? indx : 0;
5446cbdf
AM
7042 }
7043 else
7044 continue;
7045
9f7552cf
AM
7046 /* If this branch is to __tls_get_addr then we may later
7047 optimise away the call. We won't be needing a long-
7048 branch stub in that case. */
0e1862bb 7049 if (bfd_link_executable (link_info)
9f7552cf
AM
7050 && h == htab->tls_get_addr
7051 && irel != internal_relocs)
7052 {
7053 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7054 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7055 unsigned int tls_mask = 0;
7056
7057 /* The previous reloc should be one of R_PPC_TLSGD or
7058 R_PPC_TLSLD, or for older object files, a reloc
7059 on the __tls_get_addr arg setup insn. Get tls
7060 mask bits from the symbol on that reloc. */
7061 if (t_symndx < symtab_hdr->sh_info)
7062 {
7063 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7064
7065 if (local_got_offsets != NULL)
7066 {
7067 struct plt_entry **local_plt = (struct plt_entry **)
7068 (local_got_offsets + symtab_hdr->sh_info);
7069 char *lgot_masks = (char *)
7070 (local_plt + symtab_hdr->sh_info);
7071 tls_mask = lgot_masks[t_symndx];
7072 }
7073 }
7074 else
7075 {
7076 struct elf_link_hash_entry *th
7077 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7078
7079 while (th->root.type == bfd_link_hash_indirect
7080 || th->root.type == bfd_link_hash_warning)
7081 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7082
7083 tls_mask
7084 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7085 }
7086
7087 /* The mask bits tell us if the call will be
7088 optimised away. */
7089 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7090 && (t_rtype == R_PPC_TLSGD
7091 || t_rtype == R_PPC_GOT_TLSGD16
7092 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7093 continue;
7094 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7095 && (t_rtype == R_PPC_TLSLD
7096 || t_rtype == R_PPC_GOT_TLSLD16
7097 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7098 continue;
7099 }
7100
5446cbdf
AM
7101 sym_type = h->type;
7102 }
7619e7c7 7103
d3e454b9
AM
7104 if (r_type == R_PPC_ADDR16_HA)
7105 {
7106 if (h != NULL
7107 && !h->def_regular
7108 && h->protected_def
7109 && ppc_elf_hash_entry (h)->has_addr16_ha
7110 && ppc_elf_hash_entry (h)->has_addr16_lo)
7111 picfixup_size += 12;
7112 continue;
7113 }
7114
5446cbdf
AM
7115 /* The condition here under which we call find_plt_ent must
7116 match that in relocate_section. If we call find_plt_ent here
7117 but not in relocate_section, or vice versa, then the branch
7118 destination used here may be incorrect. */
7119 plist = NULL;
7120 if (h != NULL)
25dbc73a 7121 {
5446cbdf
AM
7122 /* We know is_branch_reloc (r_type) is true. */
7123 if (h->type == STT_GNU_IFUNC
7124 || r_type == R_PPC_PLTREL24)
7125 plist = &h->plt.plist;
25dbc73a 7126 }
5446cbdf
AM
7127 else if (sym_type == STT_GNU_IFUNC
7128 && elf_local_got_offsets (abfd) != NULL)
c8a1f254 7129 {
5446cbdf
AM
7130 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7131 struct plt_entry **local_plt = (struct plt_entry **)
7132 (local_got_offsets + symtab_hdr->sh_info);
7133 plist = local_plt + ELF32_R_SYM (irel->r_info);
c8a1f254 7134 }
5446cbdf 7135 if (plist != NULL)
a9585d22 7136 {
5446cbdf
AM
7137 bfd_vma addend = 0;
7138 struct plt_entry *ent;
7139
0e1862bb 7140 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
5446cbdf
AM
7141 addend = irel->r_addend;
7142 ent = find_plt_ent (plist, got2, addend);
7143 if (ent != NULL)
a9585d22 7144 {
5446cbdf
AM
7145 if (htab->plt_type == PLT_NEW
7146 || h == NULL
7147 || !htab->elf.dynamic_sections_created
7148 || h->dynindx == -1)
7149 {
7150 tsec = htab->glink;
7151 toff = ent->glink_offset;
7152 }
7153 else
7154 {
7155 tsec = htab->plt;
7156 toff = ent->plt.offset;
7157 }
de972ffa
AM
7158 }
7159 }
de972ffa 7160
5446cbdf
AM
7161 /* If the branch and target are in the same section, you have
7162 no hope of adding stubs. We'll error out later should the
7163 branch overflow. */
7164 if (tsec == isec)
7165 continue;
25dbc73a 7166
5446cbdf
AM
7167 /* There probably isn't any reason to handle symbols in
7168 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7169 attribute for a code section, and we are only looking at
7170 branches. However, implement it correctly here as a
7171 reference for other target relax_section functions. */
7172 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7173 {
7174 /* At this stage in linking, no SEC_MERGE symbol has been
7175 adjusted, so all references to such symbols need to be
7176 passed through _bfd_merged_section_offset. (Later, in
7177 relocate_section, all SEC_MERGE symbols *except* for
7178 section symbols have been adjusted.)
7179
7180 gas may reduce relocations against symbols in SEC_MERGE
7181 sections to a relocation against the section symbol when
7182 the original addend was zero. When the reloc is against
7183 a section symbol we should include the addend in the
7184 offset passed to _bfd_merged_section_offset, since the
7185 location of interest is the original symbol. On the
7186 other hand, an access to "sym+addend" where "sym" is not
7187 a section symbol should not include the addend; Such an
7188 access is presumed to be an offset from "sym"; The
7189 location of interest is just "sym". */
7190 if (sym_type == STT_SECTION)
7191 toff += irel->r_addend;
7192
7193 toff
7194 = _bfd_merged_section_offset (abfd, &tsec,
7195 elf_section_data (tsec)->sec_info,
7196 toff);
7197
7198 if (sym_type != STT_SECTION)
7199 toff += irel->r_addend;
7200 }
7201 /* PLTREL24 addends are special. */
7202 else if (r_type != R_PPC_PLTREL24)
25dbc73a 7203 toff += irel->r_addend;
7619e7c7 7204
5446cbdf 7205 /* Attempted -shared link of non-pic code loses. */
0e1862bb 7206 if ((!bfd_link_relocatable (link_info)
5446cbdf
AM
7207 && tsec == bfd_und_section_ptr)
7208 || tsec->output_section == NULL
7209 || (tsec->owner != NULL
7210 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7211 continue;
7619e7c7 7212
5446cbdf 7213 roff = irel->r_offset;
7de713b9 7214
5446cbdf
AM
7215 /* If the branch is in range, no need to do anything. */
7216 if (tsec != bfd_und_section_ptr
0e1862bb 7217 && (!bfd_link_relocatable (link_info)
5446cbdf
AM
7218 /* A relocatable link may have sections moved during
7219 final link, so do not presume they remain in range. */
7220 || tsec->output_section == isec->output_section))
7221 {
7222 bfd_vma symaddr, reladdr;
7619e7c7 7223
5446cbdf
AM
7224 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7225 reladdr = isec->output_section->vma + isec->output_offset + roff;
7226 if (symaddr - reladdr + max_branch_offset
7227 < 2 * max_branch_offset)
7228 continue;
7229 }
01017ef8 7230
5446cbdf 7231 /* Look for an existing fixup to this address. */
d3e454b9 7232 for (f = branch_fixups; f ; f = f->next)
5446cbdf
AM
7233 if (f->tsec == tsec && f->toff == toff)
7234 break;
252b5132 7235
5446cbdf
AM
7236 if (f == NULL)
7237 {
7238 size_t size;
7239 unsigned long stub_rtype;
25dbc73a 7240
5446cbdf
AM
7241 val = trampoff - roff;
7242 if (val >= max_branch_offset)
7243 /* Oh dear, we can't reach a trampoline. Don't try to add
7244 one. We'll report an error later. */
7245 continue;
252b5132 7246
0e1862bb 7247 if (bfd_link_pic (link_info))
5446cbdf
AM
7248 {
7249 size = 4 * ARRAY_SIZE (shared_stub_entry);
7250 insn_offset = 12;
7251 }
7252 else
7253 {
7254 size = 4 * ARRAY_SIZE (stub_entry);
7255 insn_offset = 0;
7256 }
7257 stub_rtype = R_PPC_RELAX;
7258 if (tsec == htab->plt
7259 || tsec == htab->glink)
7260 {
7261 stub_rtype = R_PPC_RELAX_PLT;
7262 if (r_type == R_PPC_PLTREL24)
7263 stub_rtype = R_PPC_RELAX_PLTREL24;
7264 }
252b5132 7265
5446cbdf
AM
7266 /* Hijack the old relocation. Since we need two
7267 relocations for this use a "composite" reloc. */
7268 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7269 stub_rtype);
7270 irel->r_offset = trampoff + insn_offset;
7271 if (r_type == R_PPC_PLTREL24
7272 && stub_rtype != R_PPC_RELAX_PLTREL24)
7273 irel->r_addend = 0;
7274
7275 /* Record the fixup so we don't do it again this section. */
7276 f = bfd_malloc (sizeof (*f));
d3e454b9 7277 f->next = branch_fixups;
5446cbdf
AM
7278 f->tsec = tsec;
7279 f->toff = toff;
7280 f->trampoff = trampoff;
d3e454b9 7281 branch_fixups = f;
5446cbdf
AM
7282
7283 trampoff += size;
7284 changes++;
25dbc73a
AM
7285 }
7286 else
7287 {
5446cbdf
AM
7288 val = f->trampoff - roff;
7289 if (val >= max_branch_offset)
7290 continue;
252b5132 7291
5446cbdf
AM
7292 /* Nop out the reloc, since we're finalizing things here. */
7293 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7294 }
252b5132 7295
5446cbdf
AM
7296 /* Get the section contents. */
7297 if (contents == NULL)
25dbc73a 7298 {
5446cbdf
AM
7299 /* Get cached copy if it exists. */
7300 if (elf_section_data (isec)->this_hdr.contents != NULL)
7301 contents = elf_section_data (isec)->this_hdr.contents;
25dbc73a 7302 /* Go get them off disk. */
5446cbdf 7303 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
25dbc73a
AM
7304 goto error_return;
7305 }
252b5132 7306
5446cbdf
AM
7307 /* Fix up the existing branch to hit the trampoline. */
7308 hit_addr = contents + roff;
7309 switch (r_type)
7310 {
7311 case R_PPC_REL24:
7312 case R_PPC_LOCAL24PC:
7313 case R_PPC_PLTREL24:
7314 t0 = bfd_get_32 (abfd, hit_addr);
7315 t0 &= ~0x3fffffc;
7316 t0 |= val & 0x3fffffc;
7317 bfd_put_32 (abfd, t0, hit_addr);
7318 break;
252b5132 7319
5446cbdf
AM
7320 case R_PPC_REL14:
7321 case R_PPC_REL14_BRTAKEN:
7322 case R_PPC_REL14_BRNTAKEN:
7323 t0 = bfd_get_32 (abfd, hit_addr);
7324 t0 &= ~0xfffc;
7325 t0 |= val & 0xfffc;
7326 bfd_put_32 (abfd, t0, hit_addr);
7327 break;
7328 }
25dbc73a 7329 }
252b5132 7330
d3e454b9 7331 while (branch_fixups != NULL)
25dbc73a 7332 {
d3e454b9
AM
7333 struct one_branch_fixup *f = branch_fixups;
7334 branch_fixups = branch_fixups->next;
25dbc73a
AM
7335 free (f);
7336 }
5446cbdf 7337 }
252b5132 7338
5446cbdf
AM
7339 workaround_change = FALSE;
7340 newsize = trampoff;
795bc6b3 7341 if (htab->params->ppc476_workaround
0e1862bb 7342 && (!bfd_link_relocatable (link_info)
795bc6b3 7343 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
5446cbdf
AM
7344 {
7345 bfd_vma addr, end_addr;
7346 unsigned int crossings;
795bc6b3 7347 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf
AM
7348
7349 addr = isec->output_section->vma + isec->output_offset;
6128f9cf 7350 end_addr = addr + trampoff;
5446cbdf 7351 addr &= -pagesize;
795bc6b3 7352 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
5446cbdf
AM
7353 if (crossings != 0)
7354 {
7355 /* Keep space aligned, to ensure the patch code itself does
7356 not cross a page. Don't decrease size calculated on a
7357 previous pass as otherwise we might never settle on a layout. */
1e269e9b 7358 newsize = 15 - ((end_addr - 1) & 15);
5446cbdf
AM
7359 newsize += crossings * 16;
7360 if (relax_info->workaround_size < newsize)
7361 {
7362 relax_info->workaround_size = newsize;
7363 workaround_change = TRUE;
5446cbdf
AM
7364 }
7365 /* Ensure relocate_section is called. */
7366 isec->flags |= SEC_RELOC;
7367 }
7368 newsize = trampoff + relax_info->workaround_size;
7369 }
7370
d3e454b9
AM
7371 if (htab->params->pic_fixup > 0)
7372 {
7373 picfixup_size -= relax_info->picfixup_size;
7374 if (picfixup_size != 0)
7375 relax_info->picfixup_size += picfixup_size;
7376 newsize += relax_info->picfixup_size;
7377 }
7378
7379 if (changes != 0 || picfixup_size != 0 || workaround_change)
5446cbdf
AM
7380 isec->size = newsize;
7381
25dbc73a
AM
7382 if (isymbuf != NULL
7383 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 7384 {
25dbc73a
AM
7385 if (! link_info->keep_memory)
7386 free (isymbuf);
252b5132 7387 else
25dbc73a
AM
7388 {
7389 /* Cache the symbols for elf_link_input_bfd. */
7390 symtab_hdr->contents = (unsigned char *) isymbuf;
7391 }
252b5132
RH
7392 }
7393
25dbc73a
AM
7394 if (contents != NULL
7395 && elf_section_data (isec)->this_hdr.contents != contents)
7396 {
53291d1f 7397 if (!changes && !link_info->keep_memory)
25dbc73a
AM
7398 free (contents);
7399 else
7400 {
7401 /* Cache the section contents for elf_link_input_bfd. */
7402 elf_section_data (isec)->this_hdr.contents = contents;
7403 }
7404 }
252b5132 7405
d3e454b9 7406 changes += picfixup_size;
9bc4e62b 7407 if (changes != 0)
25dbc73a 7408 {
9bc4e62b
NS
7409 /* Append sufficient NOP relocs so we can write out relocation
7410 information for the trampolines. */
d4730f92 7411 Elf_Internal_Shdr *rel_hdr;
9bc4e62b
NS
7412 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7413 * sizeof (*new_relocs));
7414 unsigned ix;
5b914448 7415
9bc4e62b
NS
7416 if (!new_relocs)
7417 goto error_return;
7418 memcpy (new_relocs, internal_relocs,
7419 isec->reloc_count * sizeof (*new_relocs));
7420 for (ix = changes; ix--;)
7421 {
7422 irel = new_relocs + ix + isec->reloc_count;
7423
7424 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7425 }
7426 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 7427 free (internal_relocs);
9bc4e62b
NS
7428 elf_section_data (isec)->relocs = new_relocs;
7429 isec->reloc_count += changes;
d4730f92
BS
7430 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7431 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
25dbc73a 7432 }
5446cbdf
AM
7433 else if (internal_relocs != NULL
7434 && elf_section_data (isec)->relocs != internal_relocs)
9bc4e62b 7435 free (internal_relocs);
252b5132 7436
5446cbdf 7437 *again = changes != 0 || workaround_change;
b34976b6 7438 return TRUE;
25dbc73a
AM
7439
7440 error_return:
d3e454b9 7441 while (branch_fixups != NULL)
5446cbdf 7442 {
d3e454b9
AM
7443 struct one_branch_fixup *f = branch_fixups;
7444 branch_fixups = branch_fixups->next;
5446cbdf
AM
7445 free (f);
7446 }
25dbc73a
AM
7447 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7448 free (isymbuf);
7449 if (contents != NULL
7450 && elf_section_data (isec)->this_hdr.contents != contents)
7451 free (contents);
7452 if (internal_relocs != NULL
7453 && elf_section_data (isec)->relocs != internal_relocs)
7454 free (internal_relocs);
7455 return FALSE;
252b5132 7456}
252b5132 7457\f
8a696751
AM
7458/* What to do when ld finds relocations against symbols defined in
7459 discarded sections. */
7460
7461static unsigned int
7462ppc_elf_action_discarded (asection *sec)
7463{
7464 if (strcmp (".fixup", sec->name) == 0)
7465 return 0;
7466
7467 if (strcmp (".got2", sec->name) == 0)
7468 return 0;
7469
7470 return _bfd_elf_default_action_discarded (sec);
7471}
c9a2f333 7472\f
25dbc73a 7473/* Fill in the address for a pointer generated in a linker section. */
252b5132 7474
25dbc73a 7475static bfd_vma
76750a2f 7476elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
7477 elf_linker_section_t *lsect,
7478 struct elf_link_hash_entry *h,
7479 bfd_vma relocation,
2bb04cf2 7480 const Elf_Internal_Rela *rel)
25dbc73a
AM
7481{
7482 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 7483
25dbc73a 7484 BFD_ASSERT (lsect != NULL);
252b5132 7485
25dbc73a 7486 if (h != NULL)
252b5132 7487 {
25dbc73a
AM
7488 /* Handle global symbol. */
7489 struct ppc_elf_link_hash_entry *eh;
252b5132 7490
25dbc73a 7491 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
7492 BFD_ASSERT (eh->elf.def_regular);
7493 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
7494 }
7495 else
7496 {
7497 /* Handle local symbol. */
7498 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 7499
0c8d6e5c 7500 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 7501 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
7502 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7503 }
252b5132 7504
76750a2f
AM
7505 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7506 rel->r_addend,
7507 lsect);
7508 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 7509
76750a2f
AM
7510 /* Offset will always be a multiple of four, so use the bottom bit
7511 as a "written" flag. */
7512 if ((linker_section_ptr->offset & 1) == 0)
7513 {
7514 bfd_put_32 (lsect->section->owner,
7515 relocation + linker_section_ptr->addend,
7516 lsect->section->contents + linker_section_ptr->offset);
7517 linker_section_ptr->offset += 1;
252b5132
RH
7518 }
7519
bd6c6e2b
AM
7520 relocation = (lsect->section->output_section->vma
7521 + lsect->section->output_offset
76750a2f 7522 + linker_section_ptr->offset - 1
bd6c6e2b 7523 - SYM_VAL (lsect->sym));
252b5132 7524
25dbc73a
AM
7525#ifdef DEBUG
7526 fprintf (stderr,
7527 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7528 lsect->name, (long) relocation, (long) relocation);
7529#endif
252b5132 7530
bd6c6e2b 7531 return relocation;
252b5132 7532}
25dbc73a 7533
e054468f
AM
7534#define PPC_LO(v) ((v) & 0xffff)
7535#define PPC_HI(v) (((v) >> 16) & 0xffff)
7536#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7537
7538static void
a7f2871e 7539write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
e054468f
AM
7540 struct bfd_link_info *info)
7541{
7542 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7543 bfd *output_bfd = info->output_bfd;
7544 bfd_vma plt;
e054468f
AM
7545
7546 plt = ((ent->plt.offset & ~1)
7547 + plt_sec->output_section->vma
7548 + plt_sec->output_offset);
e054468f 7549
0e1862bb 7550 if (bfd_link_pic (info))
e054468f
AM
7551 {
7552 bfd_vma got = 0;
7553
7554 if (ent->addend >= 32768)
7555 got = (ent->addend
7556 + ent->sec->output_section->vma
7557 + ent->sec->output_offset);
7558 else if (htab->elf.hgot != NULL)
7559 got = SYM_VAL (htab->elf.hgot);
7560
7561 plt -= got;
7562
7563 if (plt + 0x8000 < 0x10000)
7564 {
7565 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7566 p += 4;
7567 bfd_put_32 (output_bfd, MTCTR_11, p);
7568 p += 4;
7569 bfd_put_32 (output_bfd, BCTR, p);
7570 p += 4;
da3a2088 7571 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
e054468f
AM
7572 p += 4;
7573 }
7574 else
7575 {
7576 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7577 p += 4;
7578 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7579 p += 4;
7580 bfd_put_32 (output_bfd, MTCTR_11, p);
7581 p += 4;
7582 bfd_put_32 (output_bfd, BCTR, p);
7583 p += 4;
7584 }
7585 }
7586 else
7587 {
7588 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7589 p += 4;
7590 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7591 p += 4;
7592 bfd_put_32 (output_bfd, MTCTR_11, p);
7593 p += 4;
7594 bfd_put_32 (output_bfd, BCTR, p);
7595 p += 4;
7596 }
7597}
7598
bd6c6e2b
AM
7599/* Return true if symbol is defined statically. */
7600
7601static bfd_boolean
7602is_static_defined (struct elf_link_hash_entry *h)
7603{
7604 return ((h->root.type == bfd_link_hash_defined
7605 || h->root.type == bfd_link_hash_defweak)
7606 && h->root.u.def.section != NULL
7607 && h->root.u.def.section->output_section != NULL);
7608}
7609
2d0f3896
AM
7610/* If INSN is an opcode that may be used with an @tls operand, return
7611 the transformed insn for TLS optimisation, otherwise return 0. If
7612 REG is non-zero only match an insn with RB or RA equal to REG. */
7613
7614unsigned int
7615_bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7616{
7617 unsigned int rtra;
7618
7619 if ((insn & (0x3f << 26)) != 31 << 26)
7620 return 0;
7621
7622 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7623 rtra = insn & ((1 << 26) - (1 << 16));
7624 else if (((insn >> 16) & 0x1f) == reg)
7625 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7626 else
7627 return 0;
7628
7629 if ((insn & (0x3ff << 1)) == 266 << 1)
7630 /* add -> addi. */
7631 insn = 14 << 26;
7632 else if ((insn & (0x1f << 1)) == 23 << 1
7633 && ((insn & (0x1f << 6)) < 14 << 6
7634 || ((insn & (0x1f << 6)) >= 16 << 6
7635 && (insn & (0x1f << 6)) < 24 << 6)))
7636 /* load and store indexed -> dform. */
7637 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7638 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7639 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7640 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7641 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7642 /* lwax -> lwa. */
7643 insn = (58 << 26) | 2;
7644 else
7645 return 0;
7646 insn |= rtra;
7647 return insn;
7648}
7649
766bc656
AM
7650/* If INSN is an opcode that may be used with an @tprel operand, return
7651 the transformed insn for an undefined weak symbol, ie. with the
7652 thread pointer REG operand removed. Otherwise return 0. */
7653
7654unsigned int
7655_bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7656{
7657 if ((insn & (0x1f << 16)) == reg << 16
7658 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7659 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7660 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7661 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7662 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7663 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7664 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7665 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7666 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7667 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7668 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7669 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7670 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7671 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7672 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7673 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7674 && (insn & 3) != 1)
7675 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7676 && ((insn & 3) == 0 || (insn & 3) == 3))))
7677 {
7678 insn &= ~(0x1f << 16);
7679 }
7680 else if ((insn & (0x1f << 21)) == reg << 21
7681 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7682 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7683 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7684 {
7685 insn &= ~(0x1f << 21);
7686 insn |= (insn & (0x1f << 16)) << 5;
7687 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7688 insn -= 2 >> 26; /* convert to ori,oris */
7689 }
7690 else
7691 insn = 0;
7692 return insn;
7693}
7694
1fe532cf
AM
7695static bfd_boolean
7696is_insn_ds_form (unsigned int insn)
7697{
7698 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7699 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7700 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7701 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7702}
7703
7704static bfd_boolean
7705is_insn_dq_form (unsigned int insn)
7706{
a680de9a
PB
7707 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7708 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7709 && (insn & 3) == 1));
1fe532cf
AM
7710}
7711
252b5132
RH
7712/* The RELOCATE_SECTION function is called by the ELF backend linker
7713 to handle the relocations for a section.
7714
7715 The relocs are always passed as Rela structures; if the section
7716 actually uses Rel structures, the r_addend field will always be
7717 zero.
7718
7719 This function is responsible for adjust the section contents as
7720 necessary, and (if using Rela relocs and generating a
1049f94e 7721 relocatable output file) adjusting the reloc addend as
252b5132
RH
7722 necessary.
7723
7724 This function does not have to worry about setting the reloc
7725 address or the reloc symbol index.
7726
7727 LOCAL_SYMS is a pointer to the swapped in local symbols.
7728
7729 LOCAL_SECTIONS is an array giving the section in the input file
7730 corresponding to the st_shndx field of each local symbol.
7731
7732 The global hash table entry for the global symbols can be found
7733 via elf_sym_hashes (input_bfd).
7734
1049f94e 7735 When generating relocatable output, this function must handle
252b5132
RH
7736 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7737 going to be the section symbol corresponding to the output
7738 section, which means that the addend must be adjusted
7739 accordingly. */
7740
b34976b6 7741static bfd_boolean
55fd94b0
AM
7742ppc_elf_relocate_section (bfd *output_bfd,
7743 struct bfd_link_info *info,
7744 bfd *input_bfd,
7745 asection *input_section,
7746 bfd_byte *contents,
7747 Elf_Internal_Rela *relocs,
7748 Elf_Internal_Sym *local_syms,
7749 asection **local_sections)
252b5132 7750{
7619e7c7
AM
7751 Elf_Internal_Shdr *symtab_hdr;
7752 struct elf_link_hash_entry **sym_hashes;
7753 struct ppc_elf_link_hash_table *htab;
7754 Elf_Internal_Rela *rel;
c316a17c 7755 Elf_Internal_Rela *wrel;
7619e7c7
AM
7756 Elf_Internal_Rela *relend;
7757 Elf_Internal_Rela outrel;
f95f8542 7758 asection *got2;
252b5132 7759 bfd_vma *local_got_offsets;
b34976b6 7760 bfd_boolean ret = TRUE;
4fe5ca5b 7761 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 7762 bfd_boolean is_vxworks_tls;
d3e454b9
AM
7763 unsigned int picfixup_size = 0;
7764 struct ppc_elf_relax_info *relax_info = NULL;
b34976b6 7765
252b5132 7766#ifdef DEBUG
d003868e
AM
7767 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7768 "%ld relocations%s",
7769 input_bfd, input_section,
7770 (long) input_section->reloc_count,
0e1862bb 7771 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
252b5132
RH
7772#endif
7773
a6aa5195
AM
7774 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7775
e47cd125 7776 /* Initialize howto table if not already done. */
8da6118f 7777 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
7778 ppc_elf_howto_init ();
7779
7619e7c7 7780 htab = ppc_elf_hash_table (info);
252b5132 7781 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 7782 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 7783 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
7784 /* We have to handle relocations in vxworks .tls_vars sections
7785 specially, because the dynamic loader is 'weird'. */
0e1862bb 7786 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
3348747a
NS
7787 && !strcmp (input_section->output_section->name,
7788 ".tls_vars"));
d3e454b9
AM
7789 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7790 relax_info = elf_section_data (input_section)->sec_info;
c316a17c 7791 rel = wrel = relocs;
7619e7c7 7792 relend = relocs + input_section->reloc_count;
c316a17c 7793 for (; rel < relend; wrel++, rel++)
252b5132 7794 {
7619e7c7
AM
7795 enum elf_ppc_reloc_type r_type;
7796 bfd_vma addend;
7797 bfd_reloc_status_type r;
7798 Elf_Internal_Sym *sym;
7799 asection *sec;
7800 struct elf_link_hash_entry *h;
7801 const char *sym_name;
252b5132
RH
7802 reloc_howto_type *howto;
7803 unsigned long r_symndx;
7804 bfd_vma relocation;
91d6fa6a 7805 bfd_vma branch_bit, from;
7619e7c7
AM
7806 bfd_boolean unresolved_reloc;
7807 bfd_boolean warned;
7808 unsigned int tls_type, tls_mask, tls_gd;
e054468f 7809 struct plt_entry **ifunc;
86c95733 7810 struct reloc_howto_struct alt_howto;
7619e7c7 7811
c316a17c 7812 again:
55fd94b0
AM
7813 r_type = ELF32_R_TYPE (rel->r_info);
7814 sym = NULL;
7815 sec = NULL;
7816 h = NULL;
7619e7c7
AM
7817 unresolved_reloc = FALSE;
7818 warned = FALSE;
252b5132 7819 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 7820
252b5132
RH
7821 if (r_symndx < symtab_hdr->sh_info)
7822 {
7823 sym = local_syms + r_symndx;
7824 sec = local_sections[r_symndx];
26c61ae5 7825 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 7826
8517fae7 7827 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
7828 }
7829 else
7830 {
62d887d4
L
7831 bfd_boolean ignored;
7832
b2a8e766
AM
7833 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7834 r_symndx, symtab_hdr, sym_hashes,
7835 h, sec, relocation,
62d887d4 7836 unresolved_reloc, warned, ignored);
9abc968f 7837
252b5132 7838 sym_name = h->root.root.string;
7619e7c7
AM
7839 }
7840
dbaa2011 7841 if (sec != NULL && discarded_section (sec))
ab96bf03
AM
7842 {
7843 /* For relocs against symbols from removed linkonce sections,
7844 or sections discarded by a linker script, we just want the
7845 section contents zeroed. Avoid any special processing. */
7846 howto = NULL;
7847 if (r_type < R_PPC_max)
7848 howto = ppc_elf_howto_table[r_type];
c316a17c
AM
7849
7850 _bfd_clear_contents (howto, input_bfd, input_section,
7851 contents + rel->r_offset);
7852 wrel->r_offset = rel->r_offset;
7853 wrel->r_info = 0;
7854 wrel->r_addend = 0;
7855
7856 /* For ld -r, remove relocations in debug sections against
7857 sections defined in discarded sections. Not done for
7858 non-debug to preserve relocs in .eh_frame which the
7859 eh_frame editing code expects to be present. */
7860 if (bfd_link_relocatable (info)
7861 && (input_section->flags & SEC_DEBUGGING))
7862 wrel--;
7863
7864 continue;
ab96bf03
AM
7865 }
7866
0e1862bb 7867 if (bfd_link_relocatable (info))
ab96bf03
AM
7868 {
7869 if (got2 != NULL
7870 && r_type == R_PPC_PLTREL24
f75e0e33 7871 && rel->r_addend != 0)
ab96bf03
AM
7872 {
7873 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7874 addend specifies the GOT pointer offset within .got2. */
7875 rel->r_addend += got2->output_offset;
7876 }
53291d1f
AM
7877 if (r_type != R_PPC_RELAX_PLT
7878 && r_type != R_PPC_RELAX_PLTREL24
7879 && r_type != R_PPC_RELAX)
c316a17c 7880 goto copy_reloc;
ab96bf03
AM
7881 }
7882
7619e7c7
AM
7883 /* TLS optimizations. Replace instruction sequences and relocs
7884 based on information we collected in tls_optimize. We edit
7885 RELOCS so that --emit-relocs will output something sensible
7886 for the final instruction stream. */
7887 tls_mask = 0;
7888 tls_gd = 0;
727fc41e
AM
7889 if (h != NULL)
7890 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7891 else if (local_got_offsets != NULL)
7619e7c7 7892 {
e054468f 7893 struct plt_entry **local_plt;
727fc41e 7894 char *lgot_masks;
e054468f
AM
7895 local_plt
7896 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7897 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
727fc41e 7898 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM
7899 }
7900
7901 /* Ensure reloc mapping code below stays sane. */
7902 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7903 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7904 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7905 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7906 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7907 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7908 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7909 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7910 abort ();
7911 switch (r_type)
7912 {
7913 default:
7914 break;
7915
7916 case R_PPC_GOT_TPREL16:
7917 case R_PPC_GOT_TPREL16_LO:
e054468f 7918 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7919 && (tls_mask & TLS_TPREL) == 0)
7920 {
7921 bfd_vma insn;
91d6fa6a 7922
c316a17c
AM
7923 insn = bfd_get_32 (output_bfd,
7924 contents + rel->r_offset - d_offset);
7619e7c7
AM
7925 insn &= 31 << 21;
7926 insn |= 0x3c020000; /* addis 0,2,0 */
c316a17c
AM
7927 bfd_put_32 (output_bfd, insn,
7928 contents + rel->r_offset - d_offset);
7619e7c7
AM
7929 r_type = R_PPC_TPREL16_HA;
7930 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7931 }
7932 break;
7933
7934 case R_PPC_TLS:
e054468f 7935 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7936 && (tls_mask & TLS_TPREL) == 0)
7937 {
2d0f3896
AM
7938 bfd_vma insn;
7939
7619e7c7 7940 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM
7941 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7942 if (insn == 0)
7619e7c7 7943 abort ();
7619e7c7
AM
7944 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7945 r_type = R_PPC_TPREL16_LO;
7946 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 7947
7619e7c7 7948 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
7949 PPC_TPREL16_LO which is at low-order half-word. */
7950 rel->r_offset += d_offset;
7619e7c7
AM
7951 }
7952 break;
7953
7954 case R_PPC_GOT_TLSGD16_HI:
7955 case R_PPC_GOT_TLSGD16_HA:
7956 tls_gd = TLS_TPRELGD;
e054468f 7957 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7619e7c7
AM
7958 goto tls_gdld_hi;
7959 break;
7960
7961 case R_PPC_GOT_TLSLD16_HI:
7962 case R_PPC_GOT_TLSLD16_HA:
e054468f 7963 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7
AM
7964 {
7965 tls_gdld_hi:
7966 if ((tls_mask & tls_gd) != 0)
7967 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7968 + R_PPC_GOT_TPREL16);
7969 else
7970 {
4fe5ca5b 7971 rel->r_offset -= d_offset;
b86ac8e3 7972 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7619e7c7
AM
7973 r_type = R_PPC_NONE;
7974 }
7975 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7976 }
7977 break;
7978
7979 case R_PPC_GOT_TLSGD16:
7980 case R_PPC_GOT_TLSGD16_LO:
7981 tls_gd = TLS_TPRELGD;
e054468f 7982 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 7983 goto tls_ldgd_opt;
7619e7c7
AM
7984 break;
7985
7986 case R_PPC_GOT_TLSLD16:
7987 case R_PPC_GOT_TLSLD16_LO:
e054468f 7988 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7 7989 {
3a71aa26 7990 unsigned int insn1, insn2;
b7fcf6f6 7991 bfd_vma offset;
7619e7c7 7992
b7fcf6f6 7993 tls_ldgd_opt:
727fc41e
AM
7994 offset = (bfd_vma) -1;
7995 /* If not using the newer R_PPC_TLSGD/LD to mark
7996 __tls_get_addr calls, we must trust that the call
7997 stays with its arg setup insns, ie. that the next
7998 reloc is the __tls_get_addr call associated with
7999 the current reloc. Edit both insns. */
8000 if (input_section->has_tls_get_addr_call
8001 && rel + 1 < relend
8002 && branch_reloc_hash_match (input_bfd, rel + 1,
8003 htab->tls_get_addr))
8004 offset = rel[1].r_offset;
b86ac8e3
AM
8005 /* We read the low GOT_TLS insn because we need to keep
8006 the destination reg. It may be something other than
8007 the usual r3, and moved to r3 before the call by
8008 intervening code. */
8009 insn1 = bfd_get_32 (output_bfd,
8010 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
8011 if ((tls_mask & tls_gd) != 0)
8012 {
8013 /* IE */
b86ac8e3 8014 insn1 &= (0x1f << 21) | (0x1f << 16);
b7fcf6f6 8015 insn1 |= 32 << 26; /* lwz */
727fc41e
AM
8016 if (offset != (bfd_vma) -1)
8017 {
f58d5a2d 8018 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
8019 insn2 = 0x7c631214; /* add 3,3,2 */
8020 bfd_put_32 (output_bfd, insn2, contents + offset);
8021 }
b7fcf6f6
AM
8022 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8023 + R_PPC_GOT_TPREL16);
8024 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8025 }
8026 else
8027 {
8028 /* LE */
b86ac8e3
AM
8029 insn1 &= 0x1f << 21;
8030 insn1 |= 0x3c020000; /* addis r,2,0 */
7619e7c7
AM
8031 if (tls_gd == 0)
8032 {
b7fcf6f6 8033 /* Was an LD reloc. */
1d483afe
AM
8034 for (r_symndx = 0;
8035 r_symndx < symtab_hdr->sh_info;
8036 r_symndx++)
8037 if (local_sections[r_symndx] == sec)
8038 break;
8039 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 8040 r_symndx = STN_UNDEF;
b7fcf6f6 8041 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 8042 if (r_symndx != STN_UNDEF)
1d483afe
AM
8043 rel->r_addend -= (local_syms[r_symndx].st_value
8044 + sec->output_offset
8045 + sec->output_section->vma);
7619e7c7 8046 }
b7fcf6f6
AM
8047 r_type = R_PPC_TPREL16_HA;
8048 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM
8049 if (offset != (bfd_vma) -1)
8050 {
8051 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8052 rel[1].r_offset = offset + d_offset;
8053 rel[1].r_addend = rel->r_addend;
8054 insn2 = 0x38630000; /* addi 3,3,0 */
8055 bfd_put_32 (output_bfd, insn2, contents + offset);
8056 }
b7fcf6f6
AM
8057 }
8058 bfd_put_32 (output_bfd, insn1,
8059 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
8060 if (tls_gd == 0)
8061 {
8062 /* We changed the symbol on an LD reloc. Start over
8063 in order to get h, sym, sec etc. right. */
c316a17c 8064 goto again;
7619e7c7 8065 }
252b5132 8066 }
7619e7c7 8067 break;
727fc41e
AM
8068
8069 case R_PPC_TLSGD:
e054468f 8070 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
727fc41e
AM
8071 {
8072 unsigned int insn2;
8073 bfd_vma offset = rel->r_offset;
8074
8075 if ((tls_mask & TLS_TPRELGD) != 0)
8076 {
8077 /* IE */
8078 r_type = R_PPC_NONE;
8079 insn2 = 0x7c631214; /* add 3,3,2 */
8080 }
8081 else
8082 {
8083 /* LE */
8084 r_type = R_PPC_TPREL16_LO;
8085 rel->r_offset += d_offset;
8086 insn2 = 0x38630000; /* addi 3,3,0 */
8087 }
8088 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8089 bfd_put_32 (output_bfd, insn2, contents + offset);
8090 /* Zap the reloc on the _tls_get_addr call too. */
8091 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 8092 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
8093 }
8094 break;
8095
8096 case R_PPC_TLSLD:
e054468f 8097 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
727fc41e
AM
8098 {
8099 unsigned int insn2;
8100
8101 for (r_symndx = 0;
8102 r_symndx < symtab_hdr->sh_info;
8103 r_symndx++)
8104 if (local_sections[r_symndx] == sec)
8105 break;
8106 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 8107 r_symndx = STN_UNDEF;
727fc41e 8108 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 8109 if (r_symndx != STN_UNDEF)
727fc41e
AM
8110 rel->r_addend -= (local_syms[r_symndx].st_value
8111 + sec->output_offset
8112 + sec->output_section->vma);
8113
8114 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8115 rel->r_offset += d_offset;
8116 insn2 = 0x38630000; /* addi 3,3,0 */
8117 bfd_put_32 (output_bfd, insn2,
8118 contents + rel->r_offset - d_offset);
8119 /* Zap the reloc on the _tls_get_addr call too. */
8120 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
f58d5a2d 8121 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
c316a17c 8122 goto again;
727fc41e
AM
8123 }
8124 break;
7619e7c7
AM
8125 }
8126
8127 /* Handle other relocations that tweak non-addend part of insn. */
8128 branch_bit = 0;
8129 switch (r_type)
8130 {
8131 default:
8132 break;
8133
8134 /* Branch taken prediction relocations. */
8135 case R_PPC_ADDR14_BRTAKEN:
8136 case R_PPC_REL14_BRTAKEN:
8137 branch_bit = BRANCH_PREDICT_BIT;
8138 /* Fall thru */
8139
4cc11e76 8140 /* Branch not taken prediction relocations. */
7619e7c7
AM
8141 case R_PPC_ADDR14_BRNTAKEN:
8142 case R_PPC_REL14_BRNTAKEN:
91d6fa6a
NC
8143 {
8144 bfd_vma insn;
7619e7c7 8145
91d6fa6a
NC
8146 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8147 insn &= ~BRANCH_PREDICT_BIT;
8148 insn |= branch_bit;
7619e7c7 8149
91d6fa6a
NC
8150 from = (rel->r_offset
8151 + input_section->output_offset
8152 + input_section->output_section->vma);
7619e7c7 8153
91d6fa6a
NC
8154 /* Invert 'y' bit if not the default. */
8155 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8156 insn ^= BRANCH_PREDICT_BIT;
8157
8158 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8159 break;
8160 }
252b5132
RH
8161 }
8162
d3e454b9
AM
8163 if (ELIMINATE_COPY_RELOCS
8164 && h != NULL
8165 && !h->def_regular
8166 && h->protected_def
8167 && ppc_elf_hash_entry (h)->has_addr16_ha
8168 && ppc_elf_hash_entry (h)->has_addr16_lo
8169 && htab->params->pic_fixup > 0)
8170 {
8171 /* Convert lis;addi or lis;load/store accessing a protected
8172 variable defined in a shared library to PIC. */
8173 unsigned int insn;
8174
8175 if (r_type == R_PPC_ADDR16_HA)
8176 {
8177 insn = bfd_get_32 (output_bfd,
8178 contents + rel->r_offset - d_offset);
8179 if ((insn & (0x3f << 26)) == (15u << 26)
8180 && (insn & (0x1f << 16)) == 0 /* lis */)
8181 {
8182 bfd_byte *p;
8183 bfd_vma off;
8184 bfd_vma got_addr;
8185
8186 p = (contents + input_section->size
8187 - relax_info->workaround_size
8188 - relax_info->picfixup_size
8189 + picfixup_size);
8190 off = (p - contents) - (rel->r_offset - d_offset);
8191 if (off > 0x1fffffc || (off & 3) != 0)
8192 info->callbacks->einfo
8193 (_("%P: %H: fixup branch overflow\n"),
8194 input_bfd, input_section, rel->r_offset);
8195
8196 bfd_put_32 (output_bfd, B | off,
8197 contents + rel->r_offset - d_offset);
8198 got_addr = (htab->got->output_section->vma
8199 + htab->got->output_offset
8200 + (h->got.offset & ~1));
c316a17c
AM
8201 wrel->r_offset = (p - contents) + d_offset;
8202 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8203 wrel->r_addend = got_addr;
d3e454b9
AM
8204 insn &= ~0xffff;
8205 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8206 bfd_put_32 (output_bfd, insn, p);
8207
8208 /* Convert lis to lwz, loading address from GOT. */
8209 insn &= ~0xffff;
8210 insn ^= (32u ^ 15u) << 26;
8211 insn |= (insn & (0x1f << 21)) >> 5;
8212 insn |= got_addr & 0xffff;
8213 bfd_put_32 (output_bfd, insn, p + 4);
8214
8215 bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8216 picfixup_size += 12;
8217
8218 /* Use one of the spare relocs, so --emit-relocs
8219 output is reasonable. */
8220 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
c316a17c
AM
8221 wrel++, rel++;
8222 rel->r_offset = wrel[-1].r_offset + 4;
d3e454b9 8223 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
c316a17c 8224 rel->r_addend = wrel[-1].r_addend;
d3e454b9
AM
8225
8226 /* Continue on as if we had a got reloc, to output
8227 dynamic reloc. */
8228 r_type = R_PPC_GOT16_LO;
8229 }
8230 else
8231 info->callbacks->einfo
8232 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8233 input_bfd, input_section, rel->r_offset,
8234 "R_PPC_ADDR16_HA", insn);
8235 }
8236 else if (r_type == R_PPC_ADDR16_LO)
8237 {
8238 insn = bfd_get_32 (output_bfd,
8239 contents + rel->r_offset - d_offset);
8240 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8241 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8242 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8243 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8244 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8245 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8246 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8247 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8248 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8249 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8250 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8251 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8252 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8253 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8254 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8255 && (insn & 3) != 1)
8256 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8257 && ((insn & 3) == 0 || (insn & 3) == 3)))
8258 {
8259 /* Arrange to apply the reloc addend, if any. */
8260 relocation = 0;
8261 unresolved_reloc = FALSE;
8262 rel->r_info = ELF32_R_INFO (0, r_type);
8263 }
8264 else
8265 info->callbacks->einfo
8266 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8267 input_bfd, input_section, rel->r_offset,
8268 "R_PPC_ADDR16_LO", insn);
8269 }
8270 }
8271
e054468f 8272 ifunc = NULL;
25f23106 8273 if (!htab->is_vxworks)
e054468f 8274 {
de972ffa
AM
8275 struct plt_entry *ent;
8276
e054468f
AM
8277 if (h != NULL)
8278 {
8279 if (h->type == STT_GNU_IFUNC)
8280 ifunc = &h->plt.plist;
8281 }
de972ffa
AM
8282 else if (local_got_offsets != NULL
8283 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
e054468f 8284 {
de972ffa 8285 struct plt_entry **local_plt;
e054468f 8286
de972ffa
AM
8287 local_plt = (struct plt_entry **) (local_got_offsets
8288 + symtab_hdr->sh_info);
8289 ifunc = local_plt + r_symndx;
e054468f 8290 }
e054468f 8291
de972ffa
AM
8292 ent = NULL;
8293 if (ifunc != NULL
0e1862bb 8294 && (!bfd_link_pic (info)
de972ffa
AM
8295 || is_branch_reloc (r_type)))
8296 {
8297 addend = 0;
0e1862bb 8298 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
de972ffa
AM
8299 addend = rel->r_addend;
8300 ent = find_plt_ent (ifunc, got2, addend);
8301 }
8302 if (ent != NULL)
8303 {
888a7fc3
AM
8304 if (bfd_link_pic (info)
8305 && ent->sec != got2
8306 && htab->plt_type != PLT_NEW
8307 && (!htab->elf.dynamic_sections_created
8308 || h == NULL
8309 || h->dynindx == -1))
8310 {
8311 /* Uh oh, we are going to create a pic glink stub
8312 for an ifunc (here for h == NULL and later in
8313 finish_dynamic_symbol for h != NULL), and
8314 apparently are using code compiled with
8315 -mbss-plt. The difficulty is that -mbss-plt code
8316 gives no indication via a magic PLTREL24 addend
8317 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8318 is pointing into a .got2 section (and how far
8319 into .got2). */
8320 info->callbacks->einfo
8321 (_("%X%P: %H: unsupported bss-plt -fPIC ifunc %s\n"),
8322 input_bfd, input_section, rel->r_offset, sym_name);
8323 }
e054468f
AM
8324 if (h == NULL && (ent->plt.offset & 1) == 0)
8325 {
8326 Elf_Internal_Rela rela;
8327 bfd_byte *loc;
8328
8329 rela.r_offset = (htab->iplt->output_section->vma
8330 + htab->iplt->output_offset
8331 + ent->plt.offset);
8332 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8333 rela.r_addend = relocation;
25f23106
AM
8334 loc = htab->reliplt->contents;
8335 loc += (htab->reliplt->reloc_count++
8336 * sizeof (Elf32_External_Rela));
e054468f
AM
8337 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8338
8339 ent->plt.offset |= 1;
8340 }
8341 if (h == NULL && (ent->glink_offset & 1) == 0)
8342 {
a7f2871e
AM
8343 unsigned char *p = ((unsigned char *) htab->glink->contents
8344 + ent->glink_offset);
8345 write_glink_stub (ent, htab->iplt, p, info);
e054468f
AM
8346 ent->glink_offset |= 1;
8347 }
8348
8349 unresolved_reloc = FALSE;
8350 if (htab->plt_type == PLT_NEW
8351 || !htab->elf.dynamic_sections_created
c7e17e05
AM
8352 || h == NULL
8353 || h->dynindx == -1)
e054468f
AM
8354 relocation = (htab->glink->output_section->vma
8355 + htab->glink->output_offset
8356 + (ent->glink_offset & ~1));
8357 else
8358 relocation = (htab->plt->output_section->vma
8359 + htab->plt->output_offset
8360 + ent->plt.offset);
8361 }
8362 }
8363
7619e7c7
AM
8364 addend = rel->r_addend;
8365 tls_type = 0;
8366 howto = NULL;
55fd94b0
AM
8367 if (r_type < R_PPC_max)
8368 howto = ppc_elf_howto_table[r_type];
7619e7c7 8369 switch (r_type)
252b5132
RH
8370 {
8371 default:
25f53a85 8372 info->callbacks->einfo
8de848d8 8373 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
d003868e 8374 input_bfd, (int) r_type, sym_name);
252b5132
RH
8375
8376 bfd_set_error (bfd_error_bad_value);
b34976b6 8377 ret = FALSE;
c316a17c 8378 goto copy_reloc;
252b5132 8379
7619e7c7
AM
8380 case R_PPC_NONE:
8381 case R_PPC_TLS:
727fc41e
AM
8382 case R_PPC_TLSGD:
8383 case R_PPC_TLSLD:
7619e7c7
AM
8384 case R_PPC_EMB_MRKREF:
8385 case R_PPC_GNU_VTINHERIT:
8386 case R_PPC_GNU_VTENTRY:
c316a17c 8387 goto copy_reloc;
7595d193 8388
7619e7c7
AM
8389 /* GOT16 relocations. Like an ADDR16 using the symbol's
8390 address in the GOT as relocation value instead of the
8391 symbol's value itself. Also, create a GOT entry for the
8392 symbol and put the symbol value there. */
8393 case R_PPC_GOT_TLSGD16:
8394 case R_PPC_GOT_TLSGD16_LO:
8395 case R_PPC_GOT_TLSGD16_HI:
8396 case R_PPC_GOT_TLSGD16_HA:
8397 tls_type = TLS_TLS | TLS_GD;
8398 goto dogot;
8399
8400 case R_PPC_GOT_TLSLD16:
8401 case R_PPC_GOT_TLSLD16_LO:
8402 case R_PPC_GOT_TLSLD16_HI:
8403 case R_PPC_GOT_TLSLD16_HA:
8404 tls_type = TLS_TLS | TLS_LD;
8405 goto dogot;
8406
8407 case R_PPC_GOT_TPREL16:
8408 case R_PPC_GOT_TPREL16_LO:
8409 case R_PPC_GOT_TPREL16_HI:
8410 case R_PPC_GOT_TPREL16_HA:
8411 tls_type = TLS_TLS | TLS_TPREL;
8412 goto dogot;
8413
8414 case R_PPC_GOT_DTPREL16:
8415 case R_PPC_GOT_DTPREL16_LO:
8416 case R_PPC_GOT_DTPREL16_HI:
8417 case R_PPC_GOT_DTPREL16_HA:
8418 tls_type = TLS_TLS | TLS_DTPREL;
8419 goto dogot;
8420
8421 case R_PPC_GOT16:
8422 case R_PPC_GOT16_LO:
8423 case R_PPC_GOT16_HI:
8424 case R_PPC_GOT16_HA:
727fc41e 8425 tls_mask = 0;
7619e7c7
AM
8426 dogot:
8427 {
8428 /* Relocation is to the entry for this symbol in the global
8429 offset table. */
8430 bfd_vma off;
8431 bfd_vma *offp;
8432 unsigned long indx;
8433
8434 if (htab->got == NULL)
8435 abort ();
8436
8437 indx = 0;
8438 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 8439 && (h == NULL
f5385ebf 8440 || !h->def_dynamic))
7619e7c7
AM
8441 offp = &htab->tlsld_got.offset;
8442 else if (h != NULL)
8443 {
8444 bfd_boolean dyn;
8445 dyn = htab->elf.dynamic_sections_created;
0e1862bb
L
8446 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8447 || (bfd_link_pic (info)
7619e7c7
AM
8448 && SYMBOL_REFERENCES_LOCAL (info, h)))
8449 /* This is actually a static link, or it is a
8450 -Bsymbolic link and the symbol is defined
8451 locally, or the symbol was forced to be local
8452 because of a version file. */
8453 ;
8454 else
8455 {
14acf4dc 8456 BFD_ASSERT (h->dynindx != -1);
7619e7c7
AM
8457 indx = h->dynindx;
8458 unresolved_reloc = FALSE;
8459 }
8460 offp = &h->got.offset;
8461 }
8462 else
8463 {
8464 if (local_got_offsets == NULL)
8465 abort ();
8466 offp = &local_got_offsets[r_symndx];
8467 }
8468
8469 /* The offset must always be a multiple of 4. We use the
8470 least significant bit to record whether we have already
8471 processed this entry. */
8472 off = *offp;
8473 if ((off & 1) != 0)
8474 off &= ~1;
8475 else
8476 {
70bccea4
AM
8477 unsigned int tls_m = (tls_mask
8478 & (TLS_LD | TLS_GD | TLS_DTPREL
8479 | TLS_TPREL | TLS_TPRELGD));
8480
8481 if (offp == &htab->tlsld_got.offset)
8482 tls_m = TLS_LD;
8483 else if (h == NULL
f5385ebf 8484 || !h->def_dynamic)
70bccea4
AM
8485 tls_m &= ~TLS_LD;
8486
8487 /* We might have multiple got entries for this sym.
8488 Initialize them all. */
8489 do
7619e7c7 8490 {
70bccea4
AM
8491 int tls_ty = 0;
8492
8493 if ((tls_m & TLS_LD) != 0)
7619e7c7 8494 {
70bccea4
AM
8495 tls_ty = TLS_TLS | TLS_LD;
8496 tls_m &= ~TLS_LD;
8497 }
8498 else if ((tls_m & TLS_GD) != 0)
8499 {
8500 tls_ty = TLS_TLS | TLS_GD;
8501 tls_m &= ~TLS_GD;
8502 }
8503 else if ((tls_m & TLS_DTPREL) != 0)
8504 {
8505 tls_ty = TLS_TLS | TLS_DTPREL;
8506 tls_m &= ~TLS_DTPREL;
8507 }
8508 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8509 {
8510 tls_ty = TLS_TLS | TLS_TPREL;
8511 tls_m = 0;
7619e7c7 8512 }
7619e7c7 8513
70bccea4 8514 /* Generate relocs for the dynamic linker. */
0e1862bb 8515 if ((bfd_link_pic (info) || indx != 0)
d6e14abc
AM
8516 && (offp == &htab->tlsld_got.offset
8517 || h == NULL
4e795f50
AM
8518 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8519 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 8520 {
91e21fb7 8521 asection *rsec = htab->relgot;
91d6fa6a 8522 bfd_byte * loc;
91e21fb7 8523
0bed072f
AM
8524 if (ifunc != NULL)
8525 rsec = htab->reliplt;
70bccea4
AM
8526 outrel.r_offset = (htab->got->output_section->vma
8527 + htab->got->output_offset
8528 + off);
e515b051 8529 outrel.r_addend = 0;
70bccea4
AM
8530 if (tls_ty & (TLS_LD | TLS_GD))
8531 {
8532 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
8533 if (tls_ty == (TLS_TLS | TLS_GD))
8534 {
25f23106
AM
8535 loc = rsec->contents;
8536 loc += (rsec->reloc_count++
70bccea4
AM
8537 * sizeof (Elf32_External_Rela));
8538 bfd_elf32_swap_reloca_out (output_bfd,
8539 &outrel, loc);
e515b051 8540 outrel.r_offset += 4;
70bccea4
AM
8541 outrel.r_info
8542 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
8543 }
8544 }
8545 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8546 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8547 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8548 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
25f23106 8549 else if (indx != 0)
70bccea4 8550 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
25f23106
AM
8551 else if (ifunc != NULL)
8552 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8553 else
8554 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
d6e14abc 8555 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM
8556 {
8557 outrel.r_addend += relocation;
8558 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
989f9879
AM
8559 {
8560 if (htab->elf.tls_sec == NULL)
8561 outrel.r_addend = 0;
8562 else
8563 outrel.r_addend -= htab->elf.tls_sec->vma;
8564 }
e515b051 8565 }
25f23106
AM
8566 loc = rsec->contents;
8567 loc += (rsec->reloc_count++
70bccea4
AM
8568 * sizeof (Elf32_External_Rela));
8569 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
8570 }
8571
70bccea4
AM
8572 /* Init the .got section contents if we're not
8573 emitting a reloc. */
8574 else
7619e7c7 8575 {
70bccea4
AM
8576 bfd_vma value = relocation;
8577
7b609f53
AM
8578 if (tls_ty == (TLS_TLS | TLS_LD))
8579 value = 1;
8580 else if (tls_ty != 0)
70bccea4 8581 {
989f9879
AM
8582 if (htab->elf.tls_sec == NULL)
8583 value = 0;
8584 else
8585 {
8586 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8587 if (tls_ty == (TLS_TLS | TLS_TPREL))
8588 value += DTP_OFFSET - TP_OFFSET;
8589 }
70bccea4 8590
7b609f53
AM
8591 if (tls_ty == (TLS_TLS | TLS_GD))
8592 {
8593 bfd_put_32 (output_bfd, value,
8594 htab->got->contents + off + 4);
8595 value = 1;
8596 }
70bccea4 8597 }
70bccea4
AM
8598 bfd_put_32 (output_bfd, value,
8599 htab->got->contents + off);
7619e7c7 8600 }
70bccea4
AM
8601
8602 off += 4;
8603 if (tls_ty & (TLS_LD | TLS_GD))
8604 off += 4;
7619e7c7 8605 }
70bccea4
AM
8606 while (tls_m != 0);
8607
8608 off = *offp;
8609 *offp = off | 1;
7619e7c7
AM
8610 }
8611
8612 if (off >= (bfd_vma) -2)
8613 abort ();
8614
70bccea4
AM
8615 if ((tls_type & TLS_TLS) != 0)
8616 {
8617 if (tls_type != (TLS_TLS | TLS_LD))
8618 {
8619 if ((tls_mask & TLS_LD) != 0
8620 && !(h == NULL
f5385ebf 8621 || !h->def_dynamic))
70bccea4
AM
8622 off += 8;
8623 if (tls_type != (TLS_TLS | TLS_GD))
8624 {
8625 if ((tls_mask & TLS_GD) != 0)
8626 off += 8;
8627 if (tls_type != (TLS_TLS | TLS_DTPREL))
8628 {
8629 if ((tls_mask & TLS_DTPREL) != 0)
8630 off += 4;
8631 }
8632 }
8633 }
8634 }
8635
d3e454b9
AM
8636 /* If here for a picfixup, we're done. */
8637 if (r_type != ELF32_R_TYPE (rel->r_info))
c316a17c 8638 goto copy_reloc;
d3e454b9 8639
e87d4038
AM
8640 relocation = (htab->got->output_section->vma
8641 + htab->got->output_offset
8642 + off
8643 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
8644
8645 /* Addends on got relocations don't make much sense.
8646 x+off@got is actually x@got+off, and since the got is
8647 generated by a hash table traversal, the value in the
8648 got at entry m+n bears little relation to the entry m. */
8649 if (addend != 0)
25f53a85 8650 info->callbacks->einfo
8de848d8 8651 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
25f53a85 8652 input_bfd, input_section, rel->r_offset,
7b609f53 8653 howto->name,
7619e7c7
AM
8654 sym_name);
8655 }
86c95733 8656 break;
7619e7c7 8657
86c95733 8658 /* Relocations that need no special processing. */
7619e7c7 8659 case R_PPC_LOCAL24PC:
252b5132
RH
8660 /* It makes no sense to point a local relocation
8661 at a symbol not in this object. */
7b609f53 8662 if (unresolved_reloc)
252b5132 8663 {
1a72702b
AM
8664 (*info->callbacks->undefined_symbol) (info,
8665 h->root.root.string,
8666 input_bfd,
8667 input_section,
8668 rel->r_offset,
8669 TRUE);
c316a17c 8670 goto copy_reloc;
252b5132 8671 }
888a7fc3
AM
8672 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8673 {
8674 /* @local on an ifunc does not really make sense since
8675 the ifunc resolver can take you anywhere. More
8676 seriously, calls to ifuncs must go through a plt call
8677 stub, and for pic the plt call stubs uses r30 to
8678 access the PLT. The problem is that a call that is
8679 local won't have the +32k reloc addend trick marking
8680 -fPIC code, so the linker won't know whether r30 is
8681 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8682 info->callbacks->einfo (_("%X%P: %H: @local call to ifunc %s\n"),
8683 input_bfd, input_section, rel->r_offset,
8684 h->root.root.string);
8685 }
252b5132
RH
8686 break;
8687
7619e7c7
AM
8688 case R_PPC_DTPREL16:
8689 case R_PPC_DTPREL16_LO:
8690 case R_PPC_DTPREL16_HI:
8691 case R_PPC_DTPREL16_HA:
989f9879
AM
8692 if (htab->elf.tls_sec != NULL)
8693 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8694 break;
8695
70bccea4
AM
8696 /* Relocations that may need to be propagated if this is a shared
8697 object. */
7619e7c7
AM
8698 case R_PPC_TPREL16:
8699 case R_PPC_TPREL16_LO:
8700 case R_PPC_TPREL16_HI:
8701 case R_PPC_TPREL16_HA:
766bc656
AM
8702 if (h != NULL
8703 && h->root.type == bfd_link_hash_undefweak
8704 && h->dynindx == -1)
8705 {
8706 /* Make this relocation against an undefined weak symbol
8707 resolve to zero. This is really just a tweak, since
8708 code using weak externs ought to check that they are
8709 defined before using them. */
8710 bfd_byte *p = contents + rel->r_offset - d_offset;
8711 unsigned int insn = bfd_get_32 (output_bfd, p);
8712 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8713 if (insn != 0)
8714 bfd_put_32 (output_bfd, insn, p);
8715 break;
8716 }
989f9879
AM
8717 if (htab->elf.tls_sec != NULL)
8718 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8719 /* The TPREL16 relocs shouldn't really be used in shared
8720 libs as they will result in DT_TEXTREL being set, but
8721 support them anyway. */
8722 goto dodyn;
8723
8724 case R_PPC_TPREL32:
989f9879
AM
8725 if (htab->elf.tls_sec != NULL)
8726 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8727 goto dodyn;
8728
8729 case R_PPC_DTPREL32:
989f9879
AM
8730 if (htab->elf.tls_sec != NULL)
8731 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8732 goto dodyn;
8733
e515b051
AM
8734 case R_PPC_DTPMOD32:
8735 relocation = 1;
8736 addend = 0;
8737 goto dodyn;
8738
d7128ce4
AM
8739 case R_PPC_REL16:
8740 case R_PPC_REL16_LO:
8741 case R_PPC_REL16_HI:
8742 case R_PPC_REL16_HA:
a680de9a 8743 case R_PPC_REL16DX_HA:
d7128ce4
AM
8744 break;
8745
7619e7c7 8746 case R_PPC_REL32:
625af618
AM
8747 if (h == NULL || h == htab->elf.hgot)
8748 break;
8749 /* fall through */
8750
8751 case R_PPC_ADDR32:
8752 case R_PPC_ADDR16:
8753 case R_PPC_ADDR16_LO:
8754 case R_PPC_ADDR16_HI:
8755 case R_PPC_ADDR16_HA:
8756 case R_PPC_UADDR32:
8757 case R_PPC_UADDR16:
8758 goto dodyn;
8759
b9c361e0
JL
8760 case R_PPC_VLE_REL8:
8761 case R_PPC_VLE_REL15:
8762 case R_PPC_VLE_REL24:
625af618 8763 case R_PPC_REL24:
7619e7c7
AM
8764 case R_PPC_REL14:
8765 case R_PPC_REL14_BRTAKEN:
8766 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
8767 /* If these relocations are not to a named symbol, they can be
8768 handled right here, no need to bother the dynamic linker. */
89200bf8 8769 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 8770 || h == htab->elf.hgot)
252b5132 8771 break;
70bccea4 8772 /* fall through */
252b5132 8773
7619e7c7 8774 case R_PPC_ADDR24:
7619e7c7
AM
8775 case R_PPC_ADDR14:
8776 case R_PPC_ADDR14_BRTAKEN:
8777 case R_PPC_ADDR14_BRNTAKEN:
0e1862bb 8778 if (h != NULL && !bfd_link_pic (info))
625af618
AM
8779 break;
8780 /* fall through */
8781
7619e7c7 8782 dodyn:
3348747a
NS
8783 if ((input_section->flags & SEC_ALLOC) == 0
8784 || is_vxworks_tls)
c87b5a93 8785 break;
c87b5a93 8786
0e1862bb 8787 if ((bfd_link_pic (info)
89200bf8
AM
8788 && !(h != NULL
8789 && ((h->root.type == bfd_link_hash_undefined
8790 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8791 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8792 || (h->root.type == bfd_link_hash_undefweak
8793 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 8794 && (must_be_dyn_reloc (info, r_type)
f6c52c13 8795 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe 8796 || (ELIMINATE_COPY_RELOCS
0e1862bb 8797 && !bfd_link_pic (info)
ee05f2fe
AM
8798 && h != NULL
8799 && h->dynindx != -1
f5385ebf 8800 && !h->non_got_ref
d3e454b9
AM
8801 && !h->def_regular
8802 && !(h->protected_def
8803 && ppc_elf_hash_entry (h)->has_addr16_ha
8804 && ppc_elf_hash_entry (h)->has_addr16_lo
8805 && htab->params->pic_fixup > 0)))
252b5132 8806 {
0bb2d96a 8807 int skip;
f95f8542
AM
8808 bfd_byte *loc;
8809 asection *sreloc;
252b5132 8810#ifdef DEBUG
55fd94b0
AM
8811 fprintf (stderr, "ppc_elf_relocate_section needs to "
8812 "create relocation for %s\n",
70bccea4
AM
8813 (h && h->root.root.string
8814 ? h->root.root.string : "<unknown>"));
252b5132
RH
8815#endif
8816
8817 /* When generating a shared object, these relocations
70bccea4
AM
8818 are copied into the output file to be resolved at run
8819 time. */
f95f8542
AM
8820 sreloc = elf_section_data (input_section)->sreloc;
8821 if (ifunc)
8822 sreloc = htab->reliplt;
252b5132 8823 if (sreloc == NULL)
f95f8542 8824 return FALSE;
252b5132 8825
0bb2d96a 8826 skip = 0;
5b914448
AM
8827 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8828 input_section,
8829 rel->r_offset);
0bb2d96a
JJ
8830 if (outrel.r_offset == (bfd_vma) -1
8831 || outrel.r_offset == (bfd_vma) -2)
8832 skip = (int) outrel.r_offset;
252b5132
RH
8833 outrel.r_offset += (input_section->output_section->vma
8834 + input_section->output_offset);
8835
8836 if (skip)
8837 memset (&outrel, 0, sizeof outrel);
89200bf8
AM
8838 else if ((h != NULL
8839 && (h->root.type == bfd_link_hash_undefined
8840 || h->root.type == bfd_link_hash_undefweak))
8841 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 8842 {
14acf4dc 8843 BFD_ASSERT (h->dynindx != -1);
7619e7c7 8844 unresolved_reloc = FALSE;
252b5132
RH
8845 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8846 outrel.r_addend = rel->r_addend;
8847 }
8848 else
8849 {
47388f4c
AM
8850 outrel.r_addend = relocation + rel->r_addend;
8851
25f23106 8852 if (r_type != R_PPC_ADDR32)
252b5132 8853 {
89200bf8 8854 long indx = 0;
252b5132 8855
25f23106
AM
8856 if (ifunc != NULL)
8857 {
8858 /* If we get here when building a static
8859 executable, then the libc startup function
8860 responsible for applying indirect function
8861 relocations is going to complain about
8862 the reloc type.
8863 If we get here when building a dynamic
8864 executable, it will be because we have
8865 a text relocation. The dynamic loader
8866 will set the text segment writable and
8867 non-executable to apply text relocations.
8868 So we'll segfault when trying to run the
8869 indirection function to resolve the reloc. */
25f53a85 8870 info->callbacks->einfo
8de848d8 8871 (_("%P: %H: relocation %s for indirect "
25f53a85
AM
8872 "function %s unsupported\n"),
8873 input_bfd, input_section, rel->r_offset,
25f23106
AM
8874 howto->name,
8875 sym_name);
8876 ret = FALSE;
8877 }
cf35638d 8878 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
89200bf8 8879 ;
252b5132
RH
8880 else if (sec == NULL || sec->owner == NULL)
8881 {
8882 bfd_set_error (bfd_error_bad_value);
89200bf8 8883 ret = FALSE;
252b5132
RH
8884 }
8885 else
8886 {
8887 asection *osec;
8888
47388f4c
AM
8889 /* We are turning this relocation into one
8890 against a section symbol. It would be
8891 proper to subtract the symbol's value,
8892 osec->vma, from the emitted reloc addend,
25f23106
AM
8893 but ld.so expects buggy relocs.
8894 FIXME: Why not always use a zero index? */
252b5132
RH
8895 osec = sec->output_section;
8896 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
8897 if (indx == 0)
8898 {
8899 osec = htab->elf.text_index_section;
8900 indx = elf_section_data (osec)->dynindx;
8901 }
8902 BFD_ASSERT (indx != 0);
252b5132 8903#ifdef DEBUG
74541ad4 8904 if (indx == 0)
e460dd0d 8905 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
8906 indx, osec->name, osec->flags,
8907 h->root.root.string);
252b5132
RH
8908#endif
8909 }
8910
8911 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132 8912 }
25f23106
AM
8913 else if (ifunc != NULL)
8914 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8915 else
8916 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
8917 }
8918
947216bf
AM
8919 loc = sreloc->contents;
8920 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8921 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 8922
2243deae 8923 if (skip == -1)
c316a17c 8924 goto copy_reloc;
2243deae
L
8925
8926 /* This reloc will be computed at runtime. We clear the memory
8927 so that it contains predictable value. */
8928 if (! skip
8929 && ((input_section->flags & SEC_ALLOC) != 0
8930 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8931 {
8932 relocation = howto->pc_relative ? outrel.r_offset : 0;
8933 addend = 0;
8934 break;
8935 }
252b5132 8936 }
252b5132
RH
8937 break;
8938
32af9f6e
AM
8939 case R_PPC_RELAX_PLT:
8940 case R_PPC_RELAX_PLTREL24:
de972ffa
AM
8941 if (h != NULL)
8942 {
32af9f6e
AM
8943 struct plt_entry *ent;
8944 bfd_vma got2_addend = 0;
8945
8946 if (r_type == R_PPC_RELAX_PLTREL24)
8947 {
0e1862bb 8948 if (bfd_link_pic (info))
32af9f6e
AM
8949 got2_addend = addend;
8950 addend = 0;
8951 }
8952 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
de972ffa
AM
8953 if (htab->plt_type == PLT_NEW)
8954 relocation = (htab->glink->output_section->vma
8955 + htab->glink->output_offset
8956 + ent->glink_offset);
8957 else
8958 relocation = (htab->plt->output_section->vma
8959 + htab->plt->output_offset
8960 + ent->plt.offset);
8961 }
b4a38de6
AM
8962 /* Fall thru */
8963
32af9f6e 8964 case R_PPC_RELAX:
9abc968f 8965 {
53291d1f
AM
8966 const int *stub;
8967 size_t size;
8968 size_t insn_offset = rel->r_offset;
8969 unsigned int insn;
9abc968f 8970
0e1862bb 8971 if (bfd_link_pic (info))
53291d1f
AM
8972 {
8973 relocation -= (input_section->output_section->vma
8974 + input_section->output_offset
8975 + rel->r_offset - 4);
8976 stub = shared_stub_entry;
8977 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8978 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8979 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8980 stub += 3;
8981 size = ARRAY_SIZE (shared_stub_entry) - 3;
8982 }
8983 else
8984 {
8985 stub = stub_entry;
8986 size = ARRAY_SIZE (stub_entry);
8987 }
9abc968f 8988
9abc968f 8989 relocation += addend;
0e1862bb 8990 if (bfd_link_relocatable (info))
53291d1f
AM
8991 relocation = 0;
8992
8993 /* First insn is HA, second is LO. */
8994 insn = *stub++;
8995 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8996 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8997 insn_offset += 4;
8998
8999 insn = *stub++;
9000 insn |= relocation & 0xffff;
9001 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9002 insn_offset += 4;
9003 size -= 2;
9004
9005 while (size != 0)
9006 {
9007 insn = *stub++;
9008 --size;
9009 bfd_put_32 (output_bfd, insn, contents + insn_offset);
9010 insn_offset += 4;
9011 }
9bc4e62b
NS
9012
9013 /* Rewrite the reloc and convert one of the trailing nop
9014 relocs to describe this relocation. */
9015 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9016 /* The relocs are at the bottom 2 bytes */
c316a17c
AM
9017 wrel->r_offset = rel->r_offset + d_offset;
9018 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9019 wrel->r_addend = rel->r_addend;
9020 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9021 wrel++, rel++;
9022 wrel->r_offset += 4;
9023 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9abc968f 9024 }
8517fae7 9025 continue;
deaaf2f3 9026
70bccea4 9027 /* Indirect .sdata relocation. */
7619e7c7 9028 case R_PPC_EMB_SDAI16:
c9a2f333 9029 BFD_ASSERT (htab->sdata[0].section != NULL);
bd6c6e2b
AM
9030 if (!is_static_defined (htab->sdata[0].sym))
9031 {
9032 unresolved_reloc = TRUE;
9033 break;
9034 }
7619e7c7 9035 relocation
76750a2f
AM
9036 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9037 h, relocation, rel);
bd6c6e2b 9038 addend = 0;
252b5132
RH
9039 break;
9040
70bccea4 9041 /* Indirect .sdata2 relocation. */
7619e7c7 9042 case R_PPC_EMB_SDA2I16:
c9a2f333 9043 BFD_ASSERT (htab->sdata[1].section != NULL);
bd6c6e2b
AM
9044 if (!is_static_defined (htab->sdata[1].sym))
9045 {
9046 unresolved_reloc = TRUE;
9047 break;
9048 }
7619e7c7 9049 relocation
76750a2f
AM
9050 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9051 h, relocation, rel);
bd6c6e2b 9052 addend = 0;
252b5132
RH
9053 break;
9054
70bccea4
AM
9055 /* Handle the TOC16 reloc. We want to use the offset within the .got
9056 section, not the actual VMA. This is appropriate when generating
9057 an embedded ELF object, for which the .got section acts like the
9058 AIX .toc section. */
7619e7c7 9059 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
9060 if (sec == NULL || sec->output_section == NULL)
9061 {
9062 unresolved_reloc = TRUE;
9063 break;
9064 }
a0f49396
NC
9065 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9066 ".got") == 0
9067 || strcmp (bfd_get_section_name (sec->owner, sec),
9068 ".cgot") == 0);
252b5132 9069
3b4f3a11 9070 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
9071 break;
9072
7619e7c7 9073 case R_PPC_PLTREL24:
f75e0e33
AM
9074 if (h != NULL && ifunc == NULL)
9075 {
cbf95972
AM
9076 struct plt_entry *ent;
9077
9078 ent = find_plt_ent (&h->plt.plist, got2,
9079 bfd_link_pic (info) ? addend : 0);
f75e0e33
AM
9080 if (ent == NULL
9081 || htab->plt == NULL)
9082 {
9083 /* We didn't make a PLT entry for this symbol. This
9084 happens when statically linking PIC code, or when
9085 using -Bsymbolic. */
9086 }
9087 else
9088 {
9089 /* Relocation is to the entry for this symbol in the
9090 procedure linkage table. */
9091 unresolved_reloc = FALSE;
9092 if (htab->plt_type == PLT_NEW)
9093 relocation = (htab->glink->output_section->vma
9094 + htab->glink->output_offset
9095 + ent->glink_offset);
9096 else
9097 relocation = (htab->plt->output_section->vma
9098 + htab->plt->output_offset
9099 + ent->plt.offset);
9100 }
9101 }
252b5132 9102
f75e0e33
AM
9103 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9104 addend specifies the GOT pointer offset within .got2.
9105 Don't apply it to the relocation field. */
9106 addend = 0;
8da6118f 9107 break;
252b5132 9108
70bccea4 9109 /* Relocate against _SDA_BASE_. */
7619e7c7 9110 case R_PPC_SDAREL16:
252b5132
RH
9111 {
9112 const char *name;
bd6c6e2b 9113 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
252b5132 9114
bd6c6e2b
AM
9115 if (sec == NULL
9116 || sec->output_section == NULL
9117 || !is_static_defined (sda))
3b4f3a11
AM
9118 {
9119 unresolved_reloc = TRUE;
9120 break;
9121 }
bd6c6e2b 9122 addend -= SYM_VAL (sda);
3b4f3a11 9123
a0f49396 9124 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9125 if (!(strcmp (name, ".sdata") == 0
9126 || strcmp (name, ".sbss") == 0))
252b5132 9127 {
25f53a85 9128 info->callbacks->einfo
8de848d8 9129 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9130 "in the wrong output section (%s)\n"),
d003868e 9131 input_bfd,
55fd94b0
AM
9132 sym_name,
9133 howto->name,
9134 name);
252b5132 9135 }
252b5132
RH
9136 }
9137 break;
9138
70bccea4 9139 /* Relocate against _SDA2_BASE_. */
7619e7c7 9140 case R_PPC_EMB_SDA2REL:
252b5132
RH
9141 {
9142 const char *name;
bd6c6e2b 9143 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
252b5132 9144
bd6c6e2b
AM
9145 if (sec == NULL
9146 || sec->output_section == NULL
9147 || !is_static_defined (sda))
3b4f3a11
AM
9148 {
9149 unresolved_reloc = TRUE;
9150 break;
9151 }
bd6c6e2b 9152 addend -= SYM_VAL (sda);
3b4f3a11 9153
a0f49396 9154 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9155 if (!(strcmp (name, ".sdata2") == 0
9156 || strcmp (name, ".sbss2") == 0))
252b5132 9157 {
25f53a85 9158 info->callbacks->einfo
8de848d8 9159 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9160 "in the wrong output section (%s)\n"),
d003868e 9161 input_bfd,
55fd94b0
AM
9162 sym_name,
9163 howto->name,
9164 name);
252b5132 9165 }
252b5132
RH
9166 }
9167 break;
9168
b9c361e0 9169 case R_PPC_VLE_LO16A:
86c95733
AM
9170 relocation = relocation + addend;
9171 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9172 relocation, split16a_type);
c316a17c 9173 goto copy_reloc;
b9c361e0
JL
9174
9175 case R_PPC_VLE_LO16D:
86c95733
AM
9176 relocation = relocation + addend;
9177 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9178 relocation, split16d_type);
c316a17c 9179 goto copy_reloc;
b9c361e0
JL
9180
9181 case R_PPC_VLE_HI16A:
86c95733
AM
9182 relocation = (relocation + addend) >> 16;
9183 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9184 relocation, split16a_type);
c316a17c 9185 goto copy_reloc;
b9c361e0
JL
9186
9187 case R_PPC_VLE_HI16D:
86c95733
AM
9188 relocation = (relocation + addend) >> 16;
9189 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9190 relocation, split16d_type);
c316a17c 9191 goto copy_reloc;
b9c361e0
JL
9192
9193 case R_PPC_VLE_HA16A:
86c95733
AM
9194 relocation = (relocation + addend + 0x8000) >> 16;
9195 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9196 relocation, split16a_type);
c316a17c 9197 goto copy_reloc;
b9c361e0
JL
9198
9199 case R_PPC_VLE_HA16D:
86c95733
AM
9200 relocation = (relocation + addend + 0x8000) >> 16;
9201 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9202 relocation, split16d_type);
c316a17c 9203 goto copy_reloc;
b9c361e0 9204
70bccea4 9205 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7 9206 case R_PPC_EMB_SDA21:
b9c361e0 9207 case R_PPC_VLE_SDA21:
7619e7c7 9208 case R_PPC_EMB_RELSDA:
b9c361e0 9209 case R_PPC_VLE_SDA21_LO:
252b5132
RH
9210 {
9211 const char *name;
9212 int reg;
86c95733 9213 unsigned int insn;
bd6c6e2b 9214 struct elf_link_hash_entry *sda = NULL;
252b5132 9215
3b4f3a11
AM
9216 if (sec == NULL || sec->output_section == NULL)
9217 {
9218 unresolved_reloc = TRUE;
9219 break;
9220 }
9221
a0f49396 9222 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9223 if (strcmp (name, ".sdata") == 0
9224 || strcmp (name, ".sbss") == 0)
252b5132
RH
9225 {
9226 reg = 13;
bd6c6e2b 9227 sda = htab->sdata[0].sym;
252b5132 9228 }
93d1b056
AM
9229 else if (strcmp (name, ".sdata2") == 0
9230 || strcmp (name, ".sbss2") == 0)
252b5132
RH
9231 {
9232 reg = 2;
bd6c6e2b 9233 sda = htab->sdata[1].sym;
252b5132 9234 }
8da6118f
KH
9235 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9236 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
9237 {
9238 reg = 0;
9239 }
252b5132
RH
9240 else
9241 {
25f53a85 9242 info->callbacks->einfo
8de848d8 9243 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9244 "in the wrong output section (%s)\n"),
d003868e 9245 input_bfd,
55fd94b0
AM
9246 sym_name,
9247 howto->name,
9248 name);
252b5132
RH
9249
9250 bfd_set_error (bfd_error_bad_value);
b34976b6 9251 ret = FALSE;
c316a17c 9252 goto copy_reloc;
252b5132
RH
9253 }
9254
bd6c6e2b
AM
9255 if (sda != NULL)
9256 {
9257 if (!is_static_defined (sda))
9258 {
9259 unresolved_reloc = TRUE;
9260 break;
9261 }
9262 addend -= SYM_VAL (sda);
9263 }
9264
86c95733 9265 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
b9c361e0
JL
9266 if (reg == 0
9267 && (r_type == R_PPC_VLE_SDA21
9268 || r_type == R_PPC_VLE_SDA21_LO))
9269 {
86c95733
AM
9270 relocation = relocation + addend;
9271 addend = 0;
9272
9273 /* Force e_li insn, keeping RT from original insn. */
9274 insn &= 0x1f << 21;
9275 insn |= 28u << 26;
9276
9277 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9278 /* Top 4 bits of value to 17..20. */
9279 insn |= (relocation & 0xf0000) >> 5;
9280 /* Next 5 bits of the value to 11..15. */
9281 insn |= (relocation & 0xf800) << 5;
9282 /* And the final 11 bits of the value to bits 21 to 31. */
9283 insn |= relocation & 0x7ff;
9284
c3301df1
AM
9285 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9286
9287 if (r_type == R_PPC_VLE_SDA21
9288 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9289 goto overflow;
c316a17c 9290 goto copy_reloc;
b9c361e0
JL
9291 }
9292 else if (r_type == R_PPC_EMB_SDA21
9293 || r_type == R_PPC_VLE_SDA21
9294 || r_type == R_PPC_VLE_SDA21_LO)
91d6fa6a 9295 {
86c95733 9296 /* Fill in register field. */
252b5132 9297 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
252b5132 9298 }
86c95733 9299 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
9300 }
9301 break;
9302
b9c361e0
JL
9303 case R_PPC_VLE_SDAREL_LO16A:
9304 case R_PPC_VLE_SDAREL_LO16D:
9305 case R_PPC_VLE_SDAREL_HI16A:
9306 case R_PPC_VLE_SDAREL_HI16D:
9307 case R_PPC_VLE_SDAREL_HA16A:
9308 case R_PPC_VLE_SDAREL_HA16D:
9309 {
9310 bfd_vma value;
9311 const char *name;
9312 //int reg;
9313 struct elf_link_hash_entry *sda = NULL;
9314
9315 if (sec == NULL || sec->output_section == NULL)
9316 {
9317 unresolved_reloc = TRUE;
9318 break;
9319 }
9320
a0f49396 9321 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9322 if (strcmp (name, ".sdata") == 0
9323 || strcmp (name, ".sbss") == 0)
b9c361e0
JL
9324 {
9325 //reg = 13;
9326 sda = htab->sdata[0].sym;
9327 }
93d1b056
AM
9328 else if (strcmp (name, ".sdata2") == 0
9329 || strcmp (name, ".sbss2") == 0)
b9c361e0
JL
9330 {
9331 //reg = 2;
9332 sda = htab->sdata[1].sym;
9333 }
9334 else
9335 {
9336 (*_bfd_error_handler)
9337 (_("%B: the target (%s) of a %s relocation is "
9338 "in the wrong output section (%s)"),
9339 input_bfd,
9340 sym_name,
9341 howto->name,
9342 name);
9343
9344 bfd_set_error (bfd_error_bad_value);
9345 ret = FALSE;
c316a17c 9346 goto copy_reloc;
b9c361e0
JL
9347 }
9348
9349 if (sda != NULL)
9350 {
9351 if (!is_static_defined (sda))
9352 {
9353 unresolved_reloc = TRUE;
9354 break;
9355 }
9356 }
9357
86c95733
AM
9358 value = (sda->root.u.def.section->output_section->vma
9359 + sda->root.u.def.section->output_offset
9360 + addend);
9361
9362 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9363 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9364 value, split16a_type);
9365 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9366 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9367 value, split16d_type);
9368 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
b9c361e0 9369 {
86c95733
AM
9370 value = value >> 16;
9371 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9372 value, split16a_type);
b9c361e0 9373 }
86c95733 9374 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
b9c361e0 9375 {
86c95733
AM
9376 value = value >> 16;
9377 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9378 value, split16d_type);
b9c361e0 9379 }
86c95733 9380 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
b9c361e0 9381 {
86c95733
AM
9382 value = (value + 0x8000) >> 16;
9383 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9384 value, split16a_type);
b9c361e0 9385 }
86c95733 9386 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
b9c361e0 9387 {
86c95733
AM
9388 value = (value + 0x8000) >> 16;
9389 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9390 value, split16d_type);
b9c361e0
JL
9391 }
9392 }
c316a17c 9393 goto copy_reloc;
b9c361e0 9394
70bccea4 9395 /* Relocate against the beginning of the section. */
7619e7c7
AM
9396 case R_PPC_SECTOFF:
9397 case R_PPC_SECTOFF_LO:
9398 case R_PPC_SECTOFF_HI:
9399 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
9400 if (sec == NULL || sec->output_section == NULL)
9401 {
9402 unresolved_reloc = TRUE;
9403 break;
9404 }
252b5132 9405 addend -= sec->output_section->vma;
252b5132
RH
9406 break;
9407
70bccea4 9408 /* Negative relocations. */
7619e7c7
AM
9409 case R_PPC_EMB_NADDR32:
9410 case R_PPC_EMB_NADDR16:
9411 case R_PPC_EMB_NADDR16_LO:
9412 case R_PPC_EMB_NADDR16_HI:
9413 case R_PPC_EMB_NADDR16_HA:
8da6118f 9414 addend -= 2 * relocation;
252b5132
RH
9415 break;
9416
7619e7c7
AM
9417 case R_PPC_COPY:
9418 case R_PPC_GLOB_DAT:
9419 case R_PPC_JMP_SLOT:
9420 case R_PPC_RELATIVE:
e054468f 9421 case R_PPC_IRELATIVE:
7619e7c7
AM
9422 case R_PPC_PLT32:
9423 case R_PPC_PLTREL32:
9424 case R_PPC_PLT16_LO:
9425 case R_PPC_PLT16_HI:
9426 case R_PPC_PLT16_HA:
9427 case R_PPC_ADDR30:
9428 case R_PPC_EMB_RELSEC16:
9429 case R_PPC_EMB_RELST_LO:
9430 case R_PPC_EMB_RELST_HI:
9431 case R_PPC_EMB_RELST_HA:
9432 case R_PPC_EMB_BIT_FLD:
25f53a85 9433 info->callbacks->einfo
8de848d8 9434 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
d003868e 9435 input_bfd,
7619e7c7
AM
9436 howto->name,
9437 sym_name);
252b5132
RH
9438
9439 bfd_set_error (bfd_error_invalid_operation);
b34976b6 9440 ret = FALSE;
c316a17c 9441 goto copy_reloc;
7619e7c7 9442 }
252b5132 9443
7619e7c7
AM
9444 /* Do any further special processing. */
9445 switch (r_type)
9446 {
9447 default:
9448 break;
9449
9450 case R_PPC_ADDR16_HA:
d7128ce4 9451 case R_PPC_REL16_HA:
a680de9a 9452 case R_PPC_REL16DX_HA:
7619e7c7
AM
9453 case R_PPC_SECTOFF_HA:
9454 case R_PPC_TPREL16_HA:
9455 case R_PPC_DTPREL16_HA:
7619e7c7
AM
9456 case R_PPC_EMB_NADDR16_HA:
9457 case R_PPC_EMB_RELST_HA:
9458 /* It's just possible that this symbol is a weak symbol
7b609f53 9459 that's not actually defined anywhere. In that case,
7619e7c7
AM
9460 'sec' would be NULL, and we should leave the symbol
9461 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
9462 if (sec == NULL)
9463 break;
9464 /* Fall thru */
9465
9466 case R_PPC_PLT16_HA:
9467 case R_PPC_GOT16_HA:
9468 case R_PPC_GOT_TLSGD16_HA:
9469 case R_PPC_GOT_TLSLD16_HA:
9470 case R_PPC_GOT_TPREL16_HA:
9471 case R_PPC_GOT_DTPREL16_HA:
9472 /* Add 0x10000 if sign bit in 0:15 is set.
9473 Bits 0:15 are not used. */
9474 addend += 0x8000;
7619e7c7 9475 break;
1fe532cf
AM
9476
9477 case R_PPC_ADDR16:
9478 case R_PPC_ADDR16_LO:
9479 case R_PPC_GOT16:
9480 case R_PPC_GOT16_LO:
9481 case R_PPC_SDAREL16:
9482 case R_PPC_SECTOFF:
9483 case R_PPC_SECTOFF_LO:
9484 case R_PPC_DTPREL16:
9485 case R_PPC_DTPREL16_LO:
9486 case R_PPC_TPREL16:
9487 case R_PPC_TPREL16_LO:
9488 case R_PPC_GOT_TLSGD16:
9489 case R_PPC_GOT_TLSGD16_LO:
9490 case R_PPC_GOT_TLSLD16:
9491 case R_PPC_GOT_TLSLD16_LO:
9492 case R_PPC_GOT_DTPREL16:
9493 case R_PPC_GOT_DTPREL16_LO:
9494 case R_PPC_GOT_TPREL16:
9495 case R_PPC_GOT_TPREL16_LO:
9496 {
9497 /* The 32-bit ABI lacks proper relocations to deal with
9498 certain 64-bit instructions. Prevent damage to bits
9499 that make up part of the insn opcode. */
9500 unsigned int insn, mask, lobit;
9501
c316a17c
AM
9502 insn = bfd_get_32 (output_bfd,
9503 contents + rel->r_offset - d_offset);
1fe532cf
AM
9504 mask = 0;
9505 if (is_insn_ds_form (insn))
9506 mask = 3;
9507 else if (is_insn_dq_form (insn))
9508 mask = 15;
9509 else
9510 break;
a680de9a
PB
9511 relocation += addend;
9512 addend = insn & mask;
9513 lobit = mask & relocation;
1fe532cf
AM
9514 if (lobit != 0)
9515 {
a680de9a 9516 relocation ^= lobit;
1fe532cf
AM
9517 info->callbacks->einfo
9518 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9519 input_bfd, input_section, rel->r_offset,
9520 howto->name, sym_name, mask + 1);
9521 bfd_set_error (bfd_error_bad_value);
9522 ret = FALSE;
9523 }
1fe532cf
AM
9524 }
9525 break;
252b5132
RH
9526 }
9527
252b5132 9528#ifdef DEBUG
55fd94b0
AM
9529 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9530 "offset = %ld, addend = %ld\n",
252b5132 9531 howto->name,
8da6118f 9532 (int) r_type,
252b5132
RH
9533 sym_name,
9534 r_symndx,
7619e7c7 9535 (long) rel->r_offset,
8da6118f 9536 (long) addend);
252b5132
RH
9537#endif
9538
7619e7c7
AM
9539 if (unresolved_reloc
9540 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
9541 && h->def_dynamic)
9542 && _bfd_elf_section_offset (output_bfd, info, input_section,
9543 rel->r_offset) != (bfd_vma) -1)
7619e7c7 9544 {
25f53a85 9545 info->callbacks->einfo
8de848d8 9546 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
25f53a85 9547 input_bfd, input_section, rel->r_offset,
7b609f53 9548 howto->name,
7619e7c7
AM
9549 sym_name);
9550 ret = FALSE;
9551 }
9552
86c95733
AM
9553 /* 16-bit fields in insns mostly have signed values, but a
9554 few insns have 16-bit unsigned values. Really, we should
9555 have different reloc types. */
9556 if (howto->complain_on_overflow != complain_overflow_dont
9557 && howto->dst_mask == 0xffff
9558 && (input_section->flags & SEC_CODE) != 0)
9559 {
9560 enum complain_overflow complain = complain_overflow_signed;
9561
9562 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9563 {
9564 unsigned int insn;
9565
9566 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM
9567 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9568 complain = complain_overflow_bitfield;
9569 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9570 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9571 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
86c95733
AM
9572 complain = complain_overflow_unsigned;
9573 }
9574 if (howto->complain_on_overflow != complain)
9575 {
9576 alt_howto = *howto;
9577 alt_howto.complain_on_overflow = complain;
9578 howto = &alt_howto;
9579 }
9580 }
9581
a680de9a
PB
9582 if (r_type == R_PPC_REL16DX_HA)
9583 {
9584 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9585 if (rel->r_offset + 4 > input_section->size)
9586 r = bfd_reloc_outofrange;
9587 else
9588 {
9589 unsigned int insn;
9590
9591 relocation += addend;
9592 relocation -= (rel->r_offset
9593 + input_section->output_offset
9594 + input_section->output_section->vma);
9595 relocation >>= 16;
9596 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9597 insn &= ~0x1fffc1;
9598 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9599 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9600 r = bfd_reloc_ok;
9601 }
9602 }
9603 else
9604 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9605 rel->r_offset, relocation, addend);
252b5132 9606
7619e7c7 9607 if (r != bfd_reloc_ok)
252b5132 9608 {
7619e7c7 9609 if (r == bfd_reloc_overflow)
252b5132 9610 {
c3301df1 9611 overflow:
8131c122
AM
9612 /* On code like "if (foo) foo();" don't report overflow
9613 on a branch to zero when foo is undefined. */
9614 if (!warned
9615 && !(h != NULL
9616 && (h->root.type == bfd_link_hash_undefweak
9617 || h->root.type == bfd_link_hash_undefined)
9618 && is_branch_reloc (r_type)))
1a72702b
AM
9619 info->callbacks->reloc_overflow
9620 (info, (h ? &h->root : NULL), sym_name, howto->name,
9621 rel->r_addend, input_bfd, input_section, rel->r_offset);
dc1bc0c9
RH
9622 }
9623 else
9624 {
25f53a85 9625 info->callbacks->einfo
8de848d8 9626 (_("%P: %H: %s reloc against `%s': error %d\n"),
25f53a85
AM
9627 input_bfd, input_section, rel->r_offset,
9628 howto->name, sym_name, (int) r);
7619e7c7 9629 ret = FALSE;
252b5132
RH
9630 }
9631 }
c316a17c
AM
9632 copy_reloc:
9633 if (wrel != rel)
9634 *wrel = *rel;
9635 }
9636
9637 if (wrel != rel)
9638 {
9639 Elf_Internal_Shdr *rel_hdr;
9640 size_t deleted = rel - wrel;
9641
9642 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9643 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9644 if (rel_hdr->sh_size == 0)
9645 {
9646 /* It is too late to remove an empty reloc section. Leave
9647 one NONE reloc.
9648 ??? What is wrong with an empty section??? */
9649 rel_hdr->sh_size = rel_hdr->sh_entsize;
9650 deleted -= 1;
9651 wrel++;
9652 }
9653 relend = wrel;
9654 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9655 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9656 input_section->reloc_count -= deleted;
252b5132
RH
9657 }
9658
252b5132
RH
9659#ifdef DEBUG
9660 fprintf (stderr, "\n");
9661#endif
9662
53291d1f
AM
9663 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9664 && input_section->size != input_section->rawsize
9665 && (strcmp (input_section->output_section->name, ".init") == 0
9666 || strcmp (input_section->output_section->name, ".fini") == 0))
9667 {
9668 /* Branch around the trampolines. */
9669 unsigned int insn = B + input_section->size - input_section->rawsize;
9670 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9671 }
9672
5446cbdf 9673 if (htab->params->ppc476_workaround
795bc6b3 9674 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
0e1862bb 9675 && (!bfd_link_relocatable (info)
795bc6b3
AM
9676 || (input_section->output_section->alignment_power
9677 >= htab->params->pagesize_p2)))
5446cbdf 9678 {
5446cbdf 9679 bfd_vma start_addr, end_addr, addr;
795bc6b3 9680 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf 9681
5446cbdf 9682 if (relax_info->workaround_size != 0)
40fd06d1
AM
9683 {
9684 bfd_byte *p;
9685 unsigned int n;
9686 bfd_byte fill[4];
9687
9688 bfd_put_32 (input_bfd, BA, fill);
9689 p = contents + input_section->size - relax_info->workaround_size;
9690 n = relax_info->workaround_size >> 2;
9691 while (n--)
9692 {
9693 memcpy (p, fill, 4);
9694 p += 4;
9695 }
9696 }
5446cbdf
AM
9697
9698 /* The idea is: Replace the last instruction on a page with a
9699 branch to a patch area. Put the insn there followed by a
9700 branch back to the next page. Complicated a little by
9701 needing to handle moved conditional branches, and by not
9702 wanting to touch data-in-text. */
9703
9704 start_addr = (input_section->output_section->vma
9705 + input_section->output_offset);
9706 end_addr = (start_addr + input_section->size
9707 - relax_info->workaround_size);
9708 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9709 addr < end_addr;
9710 addr += pagesize)
9711 {
9712 bfd_vma offset = addr - start_addr;
9713 Elf_Internal_Rela *lo, *hi;
9714 bfd_boolean is_data;
9715 bfd_vma patch_off, patch_addr;
9716 unsigned int insn;
9717
9718 /* Do we have a data reloc at this offset? If so, leave
9719 the word alone. */
9720 is_data = FALSE;
9721 lo = relocs;
668e22e5
AM
9722 hi = relend;
9723 rel = NULL;
5446cbdf
AM
9724 while (lo < hi)
9725 {
9726 rel = lo + (hi - lo) / 2;
9727 if (rel->r_offset < offset)
9728 lo = rel + 1;
668e22e5 9729 else if (rel->r_offset > offset + 3)
5446cbdf
AM
9730 hi = rel;
9731 else
9732 {
9733 switch (ELF32_R_TYPE (rel->r_info))
9734 {
9735 case R_PPC_ADDR32:
9736 case R_PPC_UADDR32:
9737 case R_PPC_REL32:
9738 case R_PPC_ADDR30:
9739 is_data = TRUE;
9740 break;
9741 default:
9742 break;
9743 }
9744 break;
9745 }
9746 }
9747 if (is_data)
9748 continue;
9749
b4ab4364
AM
9750 /* Some instructions can be left alone too. Unconditional
9751 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9752 avoid the icache failure.
9753
9754 The problem occurs due to prefetch across a page boundary
9755 where stale instructions can be fetched from the next
9756 page, and the mechanism for flushing these bad
9757 instructions fails under certain circumstances. The
9758 unconditional branches:
9759 1) Branch: b, bl, ba, bla,
9760 2) Branch Conditional: bc, bca, bcl, bcla,
9761 3) Branch Conditional to Link Register: bclr, bclrl,
9762 where (2) and (3) have BO=0x14 making them unconditional,
9763 prevent the bad prefetch because the prefetch itself is
9764 affected by these instructions. This happens even if the
9765 instruction is not executed.
9766
9767 A bctr example:
9768 .
9769 . lis 9,new_page@ha
9770 . addi 9,9,new_page@l
9771 . mtctr 9
9772 . bctr
9773 . nop
9774 . nop
9775 . new_page:
9776 .
9777 The bctr is not predicted taken due to ctr not being
9778 ready, so prefetch continues on past the bctr into the
9779 new page which might have stale instructions. If they
9780 fail to be flushed, then they will be executed after the
9781 bctr executes. Either of the following modifications
9782 prevent the bad prefetch from happening in the first
9783 place:
9784 .
1b786873
L
9785 . lis 9,new_page@ha lis 9,new_page@ha
9786 . addi 9,9,new_page@l addi 9,9,new_page@l
9787 . mtctr 9 mtctr 9
9788 . bctr bctr
b4ab4364 9789 . nop b somewhere_else
1b786873
L
9790 . b somewhere_else nop
9791 . new_page: new_page:
b4ab4364 9792 . */
5446cbdf 9793 insn = bfd_get_32 (input_bfd, contents + offset);
b4ab4364
AM
9794 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9795 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9796 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
5446cbdf 9797 || ((insn & (0x3f << 26)) == (19u << 26)
b4ab4364
AM
9798 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9799 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
5446cbdf
AM
9800 continue;
9801
9802 patch_addr = (start_addr + input_section->size
9803 - relax_info->workaround_size);
9804 patch_addr = (patch_addr + 15) & -16;
9805 patch_off = patch_addr - start_addr;
9806 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
668e22e5
AM
9807
9808 if (rel != NULL
9809 && rel->r_offset >= offset
9810 && rel->r_offset < offset + 4)
9811 {
f8b44781
AM
9812 asection *sreloc;
9813
668e22e5
AM
9814 /* If the insn we are patching had a reloc, adjust the
9815 reloc r_offset so that the reloc applies to the moved
9816 location. This matters for -r and --emit-relocs. */
9817 if (rel + 1 != relend)
9818 {
9819 Elf_Internal_Rela tmp = *rel;
9820
9821 /* Keep the relocs sorted by r_offset. */
9822 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9823 relend[-1] = tmp;
9824 }
9825 relend[-1].r_offset += patch_off - offset;
f8b44781
AM
9826
9827 /* Adjust REL16 addends too. */
9828 switch (ELF32_R_TYPE (relend[-1].r_info))
9829 {
9830 case R_PPC_REL16:
9831 case R_PPC_REL16_LO:
9832 case R_PPC_REL16_HI:
9833 case R_PPC_REL16_HA:
9834 relend[-1].r_addend += patch_off - offset;
9835 break;
9836 default:
9837 break;
9838 }
9839
9840 /* If we are building a PIE or shared library with
9841 non-PIC objects, perhaps we had a dynamic reloc too?
9842 If so, the dynamic reloc must move with the insn. */
9843 sreloc = elf_section_data (input_section)->sreloc;
9844 if (sreloc != NULL)
9845 {
1d5c94cb 9846 Elf32_External_Rela *slo, *shi, *srelend;
f8b44781
AM
9847 bfd_vma soffset;
9848
1d5c94cb
AM
9849 slo = (Elf32_External_Rela *) sreloc->contents;
9850 shi = srelend = slo + sreloc->reloc_count;
f8b44781
AM
9851 soffset = (offset + input_section->output_section->vma
9852 + input_section->output_offset);
9853 while (slo < shi)
9854 {
1d5c94cb
AM
9855 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9856 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9857 &outrel);
f8b44781
AM
9858 if (outrel.r_offset < soffset)
9859 slo = srel + 1;
9860 else if (outrel.r_offset > soffset + 3)
9861 shi = srel;
9862 else
9863 {
1d5c94cb 9864 if (srel + 1 != srelend)
f8b44781 9865 {
1d5c94cb
AM
9866 memmove (srel, srel + 1,
9867 (srelend - (srel + 1)) * sizeof (*srel));
9868 srel = srelend - 1;
f8b44781
AM
9869 }
9870 outrel.r_offset += patch_off - offset;
1d5c94cb
AM
9871 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9872 (bfd_byte *) srel);
f8b44781
AM
9873 break;
9874 }
9875 }
9876 }
668e22e5
AM
9877 }
9878 else
9879 rel = NULL;
9880
5446cbdf
AM
9881 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9882 && (insn & 2) == 0 /* relative */)
9883 {
9884 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9885
9886 delta += offset - patch_off;
0e1862bb 9887 if (bfd_link_relocatable (info) && rel != NULL)
668e22e5 9888 delta = 0;
0e1862bb 9889 if (!bfd_link_relocatable (info) && rel != NULL)
668e22e5
AM
9890 {
9891 enum elf_ppc_reloc_type r_type;
9892
9893 r_type = ELF32_R_TYPE (relend[-1].r_info);
9894 if (r_type == R_PPC_REL14_BRTAKEN)
9895 insn |= BRANCH_PREDICT_BIT;
9896 else if (r_type == R_PPC_REL14_BRNTAKEN)
9897 insn &= ~BRANCH_PREDICT_BIT;
9898 else
9899 BFD_ASSERT (r_type == R_PPC_REL14);
9900
9901 if ((r_type == R_PPC_REL14_BRTAKEN
9902 || r_type == R_PPC_REL14_BRNTAKEN)
9903 && delta + 0x8000 < 0x10000
9904 && (bfd_signed_vma) delta < 0)
9905 insn ^= BRANCH_PREDICT_BIT;
9906 }
5446cbdf
AM
9907 if (delta + 0x8000 < 0x10000)
9908 {
9909 bfd_put_32 (input_bfd,
9910 (insn & ~0xfffc) | (delta & 0xfffc),
9911 contents + patch_off);
9912 patch_off += 4;
9913 bfd_put_32 (input_bfd,
9914 B | ((offset + 4 - patch_off) & 0x3fffffc),
9915 contents + patch_off);
9916 patch_off += 4;
9917 }
9918 else
9919 {
668e22e5
AM
9920 if (rel != NULL)
9921 {
9922 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9923
9924 relend[-1].r_offset += 8;
9925 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9926 }
5446cbdf
AM
9927 bfd_put_32 (input_bfd,
9928 (insn & ~0xfffc) | 8,
9929 contents + patch_off);
9930 patch_off += 4;
9931 bfd_put_32 (input_bfd,
9932 B | ((offset + 4 - patch_off) & 0x3fffffc),
9933 contents + patch_off);
9934 patch_off += 4;
9935 bfd_put_32 (input_bfd,
9936 B | ((delta - 8) & 0x3fffffc),
9937 contents + patch_off);
9938 patch_off += 4;
9939 }
9940 }
9941 else
9942 {
9943 bfd_put_32 (input_bfd, insn, contents + patch_off);
9944 patch_off += 4;
9945 bfd_put_32 (input_bfd,
9946 B | ((offset + 4 - patch_off) & 0x3fffffc),
9947 contents + patch_off);
9948 patch_off += 4;
9949 }
9950 BFD_ASSERT (patch_off <= input_section->size);
9951 relax_info->workaround_size = input_section->size - patch_off;
9952 }
9953 }
9954
252b5132
RH
9955 return ret;
9956}
252b5132 9957\f
25dbc73a
AM
9958/* Finish up dynamic symbol handling. We set the contents of various
9959 dynamic sections here. */
c5fccbec 9960
b34976b6 9961static bfd_boolean
25dbc73a
AM
9962ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9963 struct bfd_link_info *info,
9964 struct elf_link_hash_entry *h,
9965 Elf_Internal_Sym *sym)
e1a9cb8e 9966{
25dbc73a 9967 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
9968 struct plt_entry *ent;
9969 bfd_boolean doneone;
e1a9cb8e 9970
25dbc73a
AM
9971#ifdef DEBUG
9972 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9973 h->root.root.string);
9974#endif
e1a9cb8e 9975
25dbc73a
AM
9976 htab = ppc_elf_hash_table (info);
9977 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 9978
a6aa5195
AM
9979 doneone = FALSE;
9980 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9981 if (ent->plt.offset != (bfd_vma) -1)
9982 {
9983 if (!doneone)
9984 {
9985 Elf_Internal_Rela rela;
9986 bfd_byte *loc;
9987 bfd_vma reloc_index;
e1a9cb8e 9988
e054468f 9989 if (htab->plt_type == PLT_NEW
25f23106
AM
9990 || !htab->elf.dynamic_sections_created
9991 || h->dynindx == -1)
9d8504b1
PB
9992 reloc_index = ent->plt.offset / 4;
9993 else
9994 {
9995 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9996 / htab->plt_slot_size);
9997 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 9998 && htab->plt_type == PLT_OLD)
9d8504b1
PB
9999 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10000 }
10001
a6aa5195
AM
10002 /* This symbol has an entry in the procedure linkage table.
10003 Set it up. */
e054468f 10004 if (htab->plt_type == PLT_VXWORKS
25f23106
AM
10005 && htab->elf.dynamic_sections_created
10006 && h->dynindx != -1)
a6aa5195 10007 {
9d8504b1
PB
10008 bfd_vma got_offset;
10009 const bfd_vma *plt_entry;
5b914448 10010
9d8504b1
PB
10011 /* The first three entries in .got.plt are reserved. */
10012 got_offset = (reloc_index + 3) * 4;
10013
10014 /* Use the right PLT. */
0e1862bb 10015 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9d8504b1
PB
10016 : ppc_elf_vxworks_plt_entry;
10017
10018 /* Fill in the .plt on VxWorks. */
0e1862bb 10019 if (bfd_link_pic (info))
9d8504b1 10020 {
9d8504b1 10021 bfd_put_32 (output_bfd,
e87d4038 10022 plt_entry[0] | PPC_HA (got_offset),
9d8504b1
PB
10023 htab->plt->contents + ent->plt.offset + 0);
10024 bfd_put_32 (output_bfd,
e87d4038 10025 plt_entry[1] | PPC_LO (got_offset),
9d8504b1
PB
10026 htab->plt->contents + ent->plt.offset + 4);
10027 }
10028 else
10029 {
e87d4038 10030 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
10031
10032 bfd_put_32 (output_bfd,
e87d4038 10033 plt_entry[0] | PPC_HA (got_loc),
9d8504b1
PB
10034 htab->plt->contents + ent->plt.offset + 0);
10035 bfd_put_32 (output_bfd,
e87d4038 10036 plt_entry[1] | PPC_LO (got_loc),
9d8504b1
PB
10037 htab->plt->contents + ent->plt.offset + 4);
10038 }
10039
10040 bfd_put_32 (output_bfd, plt_entry[2],
10041 htab->plt->contents + ent->plt.offset + 8);
10042 bfd_put_32 (output_bfd, plt_entry[3],
10043 htab->plt->contents + ent->plt.offset + 12);
10044
10045 /* This instruction is an immediate load. The value loaded is
10046 the byte offset of the R_PPC_JMP_SLOT relocation from the
10047 start of the .rela.plt section. The value is stored in the
10048 low-order 16 bits of the load instruction. */
10049 /* NOTE: It appears that this is now an index rather than a
10050 prescaled offset. */
5b914448 10051 bfd_put_32 (output_bfd,
9d8504b1
PB
10052 plt_entry[4] | reloc_index,
10053 htab->plt->contents + ent->plt.offset + 16);
10054 /* This instruction is a PC-relative branch whose target is
10055 the start of the PLT section. The address of this branch
10056 instruction is 20 bytes beyond the start of this PLT entry.
10057 The address is encoded in bits 6-29, inclusive. The value
10058 stored is right-shifted by two bits, permitting a 26-bit
10059 offset. */
5b914448
AM
10060 bfd_put_32 (output_bfd,
10061 (plt_entry[5]
9d8504b1
PB
10062 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10063 htab->plt->contents + ent->plt.offset + 20);
10064 bfd_put_32 (output_bfd, plt_entry[6],
10065 htab->plt->contents + ent->plt.offset + 24);
10066 bfd_put_32 (output_bfd, plt_entry[7],
10067 htab->plt->contents + ent->plt.offset + 28);
10068
10069 /* Fill in the GOT entry corresponding to this PLT slot with
a8685210 10070 the address immediately after the "bctr" instruction
9d8504b1
PB
10071 in this PLT entry. */
10072 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
10073 + htab->plt->output_offset
10074 + ent->plt.offset + 16),
10075 htab->sgotplt->contents + got_offset);
10076
0e1862bb 10077 if (!bfd_link_pic (info))
9d8504b1
PB
10078 {
10079 /* Fill in a couple of entries in .rela.plt.unloaded. */
10080 loc = htab->srelplt2->contents
10081 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10082 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10083 * sizeof (Elf32_External_Rela));
10084
10085 /* Provide the @ha relocation for the first instruction. */
10086 rela.r_offset = (htab->plt->output_section->vma
10087 + htab->plt->output_offset
10088 + ent->plt.offset + 2);
636ce3f5 10089 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
10090 R_PPC_ADDR16_HA);
10091 rela.r_addend = got_offset;
10092 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10093 loc += sizeof (Elf32_External_Rela);
10094
10095 /* Provide the @l relocation for the second instruction. */
10096 rela.r_offset = (htab->plt->output_section->vma
10097 + htab->plt->output_offset
10098 + ent->plt.offset + 6);
636ce3f5 10099 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
10100 R_PPC_ADDR16_LO);
10101 rela.r_addend = got_offset;
10102 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10103 loc += sizeof (Elf32_External_Rela);
10104
10105 /* Provide a relocation for the GOT entry corresponding to this
10106 PLT slot. Point it at the middle of the .plt entry. */
10107 rela.r_offset = (htab->sgotplt->output_section->vma
10108 + htab->sgotplt->output_offset
10109 + got_offset);
7325306f 10110 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
10111 R_PPC_ADDR32);
10112 rela.r_addend = ent->plt.offset + 16;
10113 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10114 }
10115
10116 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10117 In particular, the offset for the relocation is not the
10118 address of the PLT entry for this function, as specified
10119 by the ABI. Instead, the offset is set to the address of
10120 the GOT slot for this function. See EABI 4.4.4.1. */
10121 rela.r_offset = (htab->sgotplt->output_section->vma
10122 + htab->sgotplt->output_offset
10123 + got_offset);
10124
a6aa5195
AM
10125 }
10126 else
10127 {
e054468f 10128 asection *splt = htab->plt;
25f23106
AM
10129 if (!htab->elf.dynamic_sections_created
10130 || h->dynindx == -1)
e054468f
AM
10131 splt = htab->iplt;
10132
10133 rela.r_offset = (splt->output_section->vma
10134 + splt->output_offset
9d8504b1 10135 + ent->plt.offset);
e054468f 10136 if (htab->plt_type == PLT_OLD
25f23106
AM
10137 || !htab->elf.dynamic_sections_created
10138 || h->dynindx == -1)
9d8504b1
PB
10139 {
10140 /* We don't need to fill in the .plt. The ppc dynamic
10141 linker will fill it in. */
10142 }
10143 else
10144 {
10145 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10146 + htab->glink->output_section->vma
10147 + htab->glink->output_offset);
10148 bfd_put_32 (output_bfd, val,
e054468f 10149 splt->contents + ent->plt.offset);
9d8504b1 10150 }
a6aa5195 10151 }
e1a9cb8e 10152
a6aa5195 10153 /* Fill in the entry in the .rela.plt section. */
a6aa5195 10154 rela.r_addend = 0;
e054468f
AM
10155 if (!htab->elf.dynamic_sections_created
10156 || h->dynindx == -1)
10157 {
10158 BFD_ASSERT (h->type == STT_GNU_IFUNC
10159 && h->def_regular
10160 && (h->root.type == bfd_link_hash_defined
10161 || h->root.type == bfd_link_hash_defweak));
10162 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10163 rela.r_addend = SYM_VAL (h);
10164 }
10165 else
10166 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
e1a9cb8e 10167
25f23106
AM
10168 if (!htab->elf.dynamic_sections_created
10169 || h->dynindx == -1)
10170 loc = (htab->reliplt->contents
10171 + (htab->reliplt->reloc_count++
10172 * sizeof (Elf32_External_Rela)));
e054468f 10173 else
25f23106
AM
10174 loc = (htab->relplt->contents
10175 + reloc_index * sizeof (Elf32_External_Rela));
a6aa5195 10176 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 10177
a6aa5195
AM
10178 if (!h->def_regular)
10179 {
0eb4a168
AM
10180 /* Mark the symbol as undefined, rather than as
10181 defined in the .plt section. Leave the value if
10182 there were any relocations where pointer equality
10183 matters (this is a clue for the dynamic linker, to
10184 make function pointer comparisons work between an
10185 application and shared library), otherwise set it
10186 to zero. */
a6aa5195 10187 sym->st_shndx = SHN_UNDEF;
0eb4a168 10188 if (!h->pointer_equality_needed)
a6aa5195 10189 sym->st_value = 0;
0eb4a168
AM
10190 else if (!h->ref_regular_nonweak)
10191 {
625af618
AM
10192 /* This breaks function pointer comparisons, but
10193 that is better than breaking tests for a NULL
0eb4a168 10194 function pointer. */
0eb4a168
AM
10195 sym->st_value = 0;
10196 }
a6aa5195 10197 }
de972ffa 10198 else if (h->type == STT_GNU_IFUNC
0e1862bb 10199 && !bfd_link_pic (info))
de972ffa
AM
10200 {
10201 /* Set the value of ifunc symbols in a non-pie
10202 executable to the glink entry. This is to avoid
10203 text relocations. We can't do this for ifunc in
10204 allocate_dynrelocs, as we do for normal dynamic
10205 function symbols with plt entries, because we need
10206 to keep the original value around for the ifunc
10207 relocation. */
10208 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10209 (output_bfd, htab->glink->output_section));
5b914448
AM
10210 sym->st_value = (ent->glink_offset
10211 + htab->glink->output_offset
de972ffa
AM
10212 + htab->glink->output_section->vma);
10213 }
a6aa5195
AM
10214 doneone = TRUE;
10215 }
e1a9cb8e 10216
e054468f 10217 if (htab->plt_type == PLT_NEW
25f23106
AM
10218 || !htab->elf.dynamic_sections_created
10219 || h->dynindx == -1)
a6aa5195 10220 {
a7f2871e 10221 unsigned char *p;
e054468f 10222 asection *splt = htab->plt;
25f23106
AM
10223 if (!htab->elf.dynamic_sections_created
10224 || h->dynindx == -1)
e054468f 10225 splt = htab->iplt;
e1a9cb8e 10226
a7f2871e
AM
10227 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10228
5446cbdf 10229 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
a7f2871e
AM
10230 {
10231 bfd_put_32 (output_bfd, LWZ_11_3, p);
10232 p += 4;
10233 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10234 p += 4;
10235 bfd_put_32 (output_bfd, MR_0_3, p);
10236 p += 4;
10237 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10238 p += 4;
10239 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10240 p += 4;
10241 bfd_put_32 (output_bfd, BEQLR, p);
10242 p += 4;
10243 bfd_put_32 (output_bfd, MR_3_0, p);
10244 p += 4;
10245 bfd_put_32 (output_bfd, NOP, p);
10246 p += 4;
10247 }
10248
10249 write_glink_stub (ent, splt, p, info);
e1a9cb8e 10250
0e1862bb 10251 if (!bfd_link_pic (info))
e054468f
AM
10252 /* We only need one non-PIC glink stub. */
10253 break;
a6aa5195
AM
10254 }
10255 else
10256 break;
10257 }
e1a9cb8e 10258
25dbc73a
AM
10259 if (h->needs_copy)
10260 {
10261 asection *s;
10262 Elf_Internal_Rela rela;
10263 bfd_byte *loc;
e1a9cb8e 10264
25dbc73a 10265 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 10266
25dbc73a
AM
10267#ifdef DEBUG
10268 fprintf (stderr, ", copy");
10269#endif
e1a9cb8e 10270
25dbc73a 10271 BFD_ASSERT (h->dynindx != -1);
86bbe32f 10272
4dc4a9a5 10273 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
10274 s = htab->relsbss;
10275 else
10276 s = htab->relbss;
10277 BFD_ASSERT (s != NULL);
e1a9cb8e 10278
e87d4038 10279 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
10280 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10281 rela.r_addend = 0;
10282 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10283 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10284 }
e1a9cb8e 10285
25dbc73a
AM
10286#ifdef DEBUG
10287 fprintf (stderr, "\n");
10288#endif
e1a9cb8e 10289
25dbc73a
AM
10290 return TRUE;
10291}
10292\f
10293static enum elf_reloc_type_class
7e612e98
AM
10294ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10295 const asection *rel_sec,
10296 const Elf_Internal_Rela *rela)
e1a9cb8e 10297{
7e612e98
AM
10298 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10299
10300 if (rel_sec == htab->reliplt)
10301 return reloc_class_ifunc;
10302
25dbc73a
AM
10303 switch (ELF32_R_TYPE (rela->r_info))
10304 {
10305 case R_PPC_RELATIVE:
10306 return reloc_class_relative;
25dbc73a
AM
10307 case R_PPC_JMP_SLOT:
10308 return reloc_class_plt;
10309 case R_PPC_COPY:
10310 return reloc_class_copy;
10311 default:
10312 return reloc_class_normal;
10313 }
e1a9cb8e 10314}
25dbc73a
AM
10315\f
10316/* Finish up the dynamic sections. */
e1a9cb8e 10317
25dbc73a
AM
10318static bfd_boolean
10319ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10320 struct bfd_link_info *info)
e1a9cb8e 10321{
25dbc73a 10322 asection *sdyn;
9d8504b1 10323 asection *splt;
25dbc73a 10324 struct ppc_elf_link_hash_table *htab;
1fe44d79 10325 bfd_vma got;
e87d4038
AM
10326 bfd *dynobj;
10327 bfd_boolean ret = TRUE;
e1a9cb8e 10328
25dbc73a
AM
10329#ifdef DEBUG
10330 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10331#endif
6b0817e5 10332
25dbc73a 10333 htab = ppc_elf_hash_table (info);
9d8504b1 10334 dynobj = elf_hash_table (info)->dynobj;
3d4d4302 10335 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9d8504b1 10336 if (htab->is_vxworks)
3d4d4302 10337 splt = bfd_get_linker_section (dynobj, ".plt");
9d8504b1
PB
10338 else
10339 splt = NULL;
e1a9cb8e 10340
1fe44d79
AM
10341 got = 0;
10342 if (htab->elf.hgot != NULL)
e87d4038 10343 got = SYM_VAL (htab->elf.hgot);
1fe44d79 10344
25dbc73a 10345 if (htab->elf.dynamic_sections_created)
e1a9cb8e 10346 {
25dbc73a 10347 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 10348
25dbc73a 10349 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 10350
25dbc73a
AM
10351 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10352 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10353 for (; dyncon < dynconend; dyncon++)
10354 {
10355 Elf_Internal_Dyn dyn;
10356 asection *s;
e1a9cb8e 10357
9d8504b1 10358 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 10359
25dbc73a
AM
10360 switch (dyn.d_tag)
10361 {
10362 case DT_PLTGOT:
9d8504b1
PB
10363 if (htab->is_vxworks)
10364 s = htab->sgotplt;
10365 else
10366 s = htab->plt;
25dbc73a
AM
10367 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10368 break;
86bbe32f 10369
25dbc73a
AM
10370 case DT_PLTRELSZ:
10371 dyn.d_un.d_val = htab->relplt->size;
10372 break;
e1a9cb8e 10373
25dbc73a
AM
10374 case DT_JMPREL:
10375 s = htab->relplt;
10376 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10377 break;
2f89ff8d 10378
1fe44d79
AM
10379 case DT_PPC_GOT:
10380 dyn.d_un.d_ptr = got;
d7128ce4
AM
10381 break;
10382
9d8504b1
PB
10383 case DT_RELASZ:
10384 if (htab->is_vxworks)
10385 {
10386 if (htab->relplt)
10387 dyn.d_un.d_ptr -= htab->relplt->size;
10388 break;
10389 }
10390 continue;
10391
25dbc73a 10392 default:
7a2b07ff
NS
10393 if (htab->is_vxworks
10394 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10395 break;
25dbc73a
AM
10396 continue;
10397 }
4c45e5c9 10398
25dbc73a
AM
10399 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10400 }
10401 }
4c45e5c9 10402
3b36f7e6 10403 if (htab->got != NULL)
25dbc73a 10404 {
e79f5955
AM
10405 if (htab->elf.hgot->root.u.def.section == htab->got
10406 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
e87d4038 10407 {
e79f5955 10408 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 10409
e87d4038
AM
10410 p += htab->elf.hgot->root.u.def.value;
10411 if (htab->plt_type == PLT_OLD)
e79f5955
AM
10412 {
10413 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10414 so that a function can easily find the address of
10415 _GLOBAL_OFFSET_TABLE_. */
10416 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10417 < htab->elf.hgot->root.u.def.section->size);
10418 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10419 }
3b36f7e6 10420
e87d4038 10421 if (sdyn != NULL)
e79f5955
AM
10422 {
10423 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10424 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10425 < htab->elf.hgot->root.u.def.section->size);
10426 bfd_put_32 (output_bfd, val, p);
10427 }
e87d4038
AM
10428 }
10429 else
10430 {
8de848d8 10431 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
25f53a85
AM
10432 htab->elf.hgot->root.root.string,
10433 (htab->sgotplt != NULL
10434 ? htab->sgotplt->name : htab->got->name));
e87d4038
AM
10435 bfd_set_error (bfd_error_bad_value);
10436 ret = FALSE;
10437 }
25dbc73a
AM
10438
10439 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10440 }
10441
9d8504b1
PB
10442 /* Fill in the first entry in the VxWorks procedure linkage table. */
10443 if (splt && splt->size > 0)
10444 {
10445 /* Use the right PLT. */
0e1862bb 10446 const bfd_vma *plt_entry = (bfd_link_pic (info)
5b914448
AM
10447 ? ppc_elf_vxworks_pic_plt0_entry
10448 : ppc_elf_vxworks_plt0_entry);
9d8504b1 10449
0e1862bb 10450 if (!bfd_link_pic (info))
9d8504b1 10451 {
e87d4038 10452 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 10453
e87d4038 10454 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 10455 splt->contents + 0);
e87d4038 10456 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
10457 splt->contents + 4);
10458 }
10459 else
10460 {
10461 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10462 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10463 }
10464 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10465 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10466 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10467 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10468 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10469 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10470
0e1862bb 10471 if (! bfd_link_pic (info))
9d8504b1
PB
10472 {
10473 Elf_Internal_Rela rela;
10474 bfd_byte *loc;
10475
10476 loc = htab->srelplt2->contents;
10477
10478 /* Output the @ha relocation for the first instruction. */
10479 rela.r_offset = (htab->plt->output_section->vma
10480 + htab->plt->output_offset
10481 + 2);
636ce3f5 10482 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10483 rela.r_addend = 0;
10484 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10485 loc += sizeof (Elf32_External_Rela);
5b914448 10486
9d8504b1
PB
10487 /* Output the @l relocation for the second instruction. */
10488 rela.r_offset = (htab->plt->output_section->vma
10489 + htab->plt->output_offset
10490 + 6);
636ce3f5 10491 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10492 rela.r_addend = 0;
10493 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10494 loc += sizeof (Elf32_External_Rela);
10495
10496 /* Fix up the remaining relocations. They may have the wrong
10497 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10498 in which symbols were output. */
10499 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10500 {
10501 Elf_Internal_Rela rel;
10502
10503 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10504 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10505 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10506 loc += sizeof (Elf32_External_Rela);
10507
10508 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10509 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10510 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10511 loc += sizeof (Elf32_External_Rela);
10512
10513 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 10514 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
10515 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10516 loc += sizeof (Elf32_External_Rela);
10517 }
10518 }
10519 }
10520
e054468f
AM
10521 if (htab->glink != NULL
10522 && htab->glink->contents != NULL
10523 && htab->elf.dynamic_sections_created)
d7128ce4
AM
10524 {
10525 unsigned char *p;
10526 unsigned char *endp;
a6aa5195 10527 bfd_vma res0;
d7128ce4 10528 unsigned int i;
a6aa5195
AM
10529
10530 /*
10531 * PIC glink code is the following:
10532 *
10533 * # ith PLT code stub.
10534 * addis 11,30,(plt+(i-1)*4-got)@ha
10535 * lwz 11,(plt+(i-1)*4-got)@l(11)
10536 * mtctr 11
10537 * bctr
10538 *
10539 * # A table of branches, one for each plt entry.
176a0d42 10540 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
10541 * # addresses, so (r11 - res_0) gives the plt index * 4.
10542 * res_0: b PLTresolve
10543 * res_1: b PLTresolve
10544 * .
10545 * # Some number of entries towards the end can be nops
10546 * res_n_m3: nop
10547 * res_n_m2: nop
10548 * res_n_m1:
10549 *
10550 * PLTresolve:
10551 * addis 11,11,(1f-res_0)@ha
10552 * mflr 0
10553 * bcl 20,31,1f
10554 * 1: addi 11,11,(1b-res_0)@l
10555 * mflr 12
10556 * mtlr 0
10557 * sub 11,11,12 # r11 = index * 4
10558 * addis 12,12,(got+4-1b)@ha
10559 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10560 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10561 * mtctr 0
10562 * add 0,11,11
10563 * add 11,0,11 # r11 = index * 12 = reloc offset.
10564 * bctr
10565 */
10566 static const unsigned int pic_plt_resolve[] =
10567 {
10568 ADDIS_11_11,
10569 MFLR_0,
10570 BCL_20_31,
10571 ADDI_11_11,
10572 MFLR_12,
10573 MTLR_0,
10574 SUB_11_11_12,
10575 ADDIS_12_12,
10576 LWZ_0_12,
10577 LWZ_12_12,
10578 MTCTR_0,
10579 ADD_0_11_11,
10580 ADD_11_0_11,
10581 BCTR,
10582 NOP,
10583 NOP
10584 };
10585
176a0d42
AM
10586 /*
10587 * Non-PIC glink code is a little simpler.
10588 *
10589 * # ith PLT code stub.
10590 * lis 11,(plt+(i-1)*4)@ha
10591 * lwz 11,(plt+(i-1)*4)@l(11)
10592 * mtctr 11
10593 * bctr
10594 *
10595 * The branch table is the same, then comes
10596 *
10597 * PLTresolve:
10598 * lis 12,(got+4)@ha
10599 * addis 11,11,(-res_0)@ha
10600 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10601 * addi 11,11,(-res_0)@l # r11 = index * 4
10602 * mtctr 0
10603 * add 0,11,11
10604 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10605 * add 11,0,11 # r11 = index * 12 = reloc offset.
10606 * bctr
10607 */
d7128ce4
AM
10608 static const unsigned int plt_resolve[] =
10609 {
a6aa5195
AM
10610 LIS_12,
10611 ADDIS_11_11,
10612 LWZ_0_12,
10613 ADDI_11_11,
d7128ce4 10614 MTCTR_0,
7e8aeb9a 10615 ADD_0_11_11,
a6aa5195 10616 LWZ_12_12,
7e8aeb9a 10617 ADD_11_0_11,
d7128ce4
AM
10618 BCTR,
10619 NOP,
10620 NOP,
a6aa5195
AM
10621 NOP,
10622 NOP,
10623 NOP,
10624 NOP,
d7128ce4
AM
10625 NOP
10626 };
10627
a6aa5195
AM
10628 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10629 abort ();
10630 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
10631 abort ();
10632
a6aa5195 10633 /* Build the branch table, one for each plt entry (less one),
86b9da88 10634 and perhaps some padding. */
a6aa5195
AM
10635 p = htab->glink->contents;
10636 p += htab->glink_pltresolve;
86b9da88
AM
10637 endp = htab->glink->contents;
10638 endp += htab->glink->size - GLINK_PLTRESOLVE;
da3a2088 10639 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
86b9da88
AM
10640 {
10641 bfd_put_32 (output_bfd, B + endp - p, p);
10642 p += 4;
10643 }
10644 while (p < endp)
10645 {
10646 bfd_put_32 (output_bfd, NOP, p);
10647 p += 4;
10648 }
10649
7e8aeb9a 10650 res0 = (htab->glink_pltresolve
86b9da88
AM
10651 + htab->glink->output_section->vma
10652 + htab->glink->output_offset);
10653
da3a2088
AM
10654 if (htab->params->ppc476_workaround)
10655 {
10656 /* Ensure that a call stub at the end of a page doesn't
10657 result in prefetch over the end of the page into the
10658 glink branch table. */
10659 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10660 bfd_vma page_addr;
10661 bfd_vma glink_start = (htab->glink->output_section->vma
10662 + htab->glink->output_offset);
10663
10664 for (page_addr = res0 & -pagesize;
10665 page_addr > glink_start;
10666 page_addr -= pagesize)
10667 {
10668 /* We have a plt call stub that may need fixing. */
10669 bfd_byte *loc;
10670 unsigned int insn;
10671
10672 loc = htab->glink->contents + page_addr - 4 - glink_start;
10673 insn = bfd_get_32 (output_bfd, loc);
10674 if (insn == BCTR)
10675 {
10676 /* By alignment, we know that there must be at least
10677 one other call stub before this one. */
10678 insn = bfd_get_32 (output_bfd, loc - 16);
10679 if (insn == BCTR)
10680 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10681 else
10682 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10683 }
10684 }
10685 }
10686
86b9da88 10687 /* Last comes the PLTresolve stub. */
0e1862bb 10688 if (bfd_link_pic (info))
7e8aeb9a 10689 {
a6aa5195 10690 bfd_vma bcl;
d7128ce4 10691
a6aa5195 10692 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 10693 {
da3a2088
AM
10694 unsigned int insn = pic_plt_resolve[i];
10695
10696 if (htab->params->ppc476_workaround && insn == NOP)
10697 insn = BA + 0;
10698 bfd_put_32 (output_bfd, insn, p);
7e8aeb9a
AM
10699 p += 4;
10700 }
a6aa5195
AM
10701 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10702
10703 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10704 + htab->glink->output_section->vma
10705 + htab->glink->output_offset);
10706
10707 bfd_put_32 (output_bfd,
10708 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10709 bfd_put_32 (output_bfd,
10710 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10711 bfd_put_32 (output_bfd,
10712 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10713 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10714 {
10715 bfd_put_32 (output_bfd,
10716 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10717 bfd_put_32 (output_bfd,
10718 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10719 }
10720 else
10721 {
10722 bfd_put_32 (output_bfd,
10723 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10724 bfd_put_32 (output_bfd,
10725 LWZ_12_12 + 4, p + 9*4);
10726 }
7e8aeb9a
AM
10727 }
10728 else
d7128ce4 10729 {
a6aa5195 10730 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a 10731 {
da3a2088
AM
10732 unsigned int insn = plt_resolve[i];
10733
10734 if (htab->params->ppc476_workaround && insn == NOP)
10735 insn = BA + 0;
10736 bfd_put_32 (output_bfd, insn, p);
7e8aeb9a
AM
10737 p += 4;
10738 }
a6aa5195
AM
10739 p -= 4 * ARRAY_SIZE (plt_resolve);
10740
10741 bfd_put_32 (output_bfd,
10742 LIS_12 + PPC_HA (got + 4), p + 0*4);
10743 bfd_put_32 (output_bfd,
10744 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10745 bfd_put_32 (output_bfd,
10746 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10747 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10748 {
10749 bfd_put_32 (output_bfd,
10750 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10751 bfd_put_32 (output_bfd,
10752 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10753 }
10754 else
10755 {
10756 bfd_put_32 (output_bfd,
10757 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10758 bfd_put_32 (output_bfd,
10759 LWZ_12_12 + 4, p + 6*4);
10760 }
d7128ce4 10761 }
d7128ce4
AM
10762 }
10763
6177242a
AM
10764 if (htab->glink_eh_frame != NULL
10765 && htab->glink_eh_frame->contents != NULL)
10766 {
10767 unsigned char *p = htab->glink_eh_frame->contents;
10768 bfd_vma val;
10769
6177242a
AM
10770 p += sizeof (glink_eh_frame_cie);
10771 /* FDE length. */
6177242a
AM
10772 p += 4;
10773 /* CIE pointer. */
6177242a
AM
10774 p += 4;
10775 /* Offset to .glink. */
10776 val = (htab->glink->output_section->vma
10777 + htab->glink->output_offset);
10778 val -= (htab->glink_eh_frame->output_section->vma
10779 + htab->glink_eh_frame->output_offset);
10780 val -= p - htab->glink_eh_frame->contents;
10781 bfd_put_32 (htab->elf.dynobj, val, p);
6177242a 10782
dbaa2011 10783 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
6177242a
AM
10784 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10785 htab->glink_eh_frame,
10786 htab->glink_eh_frame->contents))
10787 return FALSE;
10788 }
10789
e87d4038 10790 return ret;
25dbc73a 10791}
e1a9cb8e 10792\f
6d00b590 10793#define TARGET_LITTLE_SYM powerpc_elf32_le_vec
252b5132 10794#define TARGET_LITTLE_NAME "elf32-powerpcle"
6d00b590 10795#define TARGET_BIG_SYM powerpc_elf32_vec
252b5132
RH
10796#define TARGET_BIG_NAME "elf32-powerpc"
10797#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 10798#define ELF_TARGET_ID PPC32_ELF_DATA
252b5132 10799#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
10800#ifdef __QNXTARGET__
10801#define ELF_MAXPAGESIZE 0x1000
04c6a44c 10802#define ELF_COMMONPAGESIZE 0x1000
d0facd1b 10803#else
252b5132 10804#define ELF_MAXPAGESIZE 0x10000
04c6a44c 10805#define ELF_COMMONPAGESIZE 0x10000
d0facd1b 10806#endif
b1342370 10807#define ELF_MINPAGESIZE 0x1000
252b5132
RH
10808#define elf_info_to_howto ppc_elf_info_to_howto
10809
10810#ifdef EM_CYGNUS_POWERPC
10811#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10812#endif
10813
10814#ifdef EM_PPC_OLD
10815#define ELF_MACHINE_ALT2 EM_PPC_OLD
10816#endif
10817
10818#define elf_backend_plt_not_loaded 1
252b5132 10819#define elf_backend_can_gc_sections 1
51b64d56 10820#define elf_backend_can_refcount 1
b491616a 10821#define elf_backend_rela_normal 1
53291d1f 10822#define elf_backend_caches_rawsize 1
252b5132 10823
43c40ab2 10824#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 10825#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 10826#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 10827#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
b9c361e0 10828#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 10829#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 10830#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 10831#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 10832
feee612b 10833#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
10834#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10835#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10836#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10837#define elf_backend_relocate_section ppc_elf_relocate_section
10838#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10839#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 10840#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
10841#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10842#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10843#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 10844#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
10845#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10846#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10847#define elf_backend_fake_sections ppc_elf_fake_sections
10848#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
b9c361e0 10849#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
c5fccbec
DJ
10850#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10851#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 10852#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 10853#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
10854#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10855#define elf_backend_final_write_processing ppc_elf_final_write_processing
10856#define elf_backend_write_section ppc_elf_write_section
551b43fd 10857#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 10858#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 10859#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 10860#define elf_backend_init_index_section _bfd_elf_init_1_index_section
b9c361e0 10861#define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
b9c361e0 10862#define elf_backend_section_processing ppc_elf_section_processing
252b5132
RH
10863
10864#include "elf32-target.h"
9d8504b1 10865
7b8e7dad
AM
10866/* FreeBSD Target */
10867
10868#undef TARGET_LITTLE_SYM
10869#undef TARGET_LITTLE_NAME
10870
10871#undef TARGET_BIG_SYM
6d00b590 10872#define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
7b8e7dad
AM
10873#undef TARGET_BIG_NAME
10874#define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10875
10876#undef ELF_OSABI
10877#define ELF_OSABI ELFOSABI_FREEBSD
10878
10879#undef elf32_bed
10880#define elf32_bed elf32_powerpc_fbsd_bed
10881
10882#include "elf32-target.h"
10883
9d8504b1
PB
10884/* VxWorks Target */
10885
10886#undef TARGET_LITTLE_SYM
10887#undef TARGET_LITTLE_NAME
10888
10889#undef TARGET_BIG_SYM
6d00b590 10890#define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
9d8504b1
PB
10891#undef TARGET_BIG_NAME
10892#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10893
7b8e7dad
AM
10894#undef ELF_OSABI
10895
d5e3d971
PB
10896/* VxWorks uses the elf default section flags for .plt. */
10897static const struct bfd_elf_special_section *
10898ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 10899{
d5e3d971
PB
10900 if (sec->name == NULL)
10901 return NULL;
10902
10903 if (strcmp (sec->name, ".plt") == 0)
10904 return _bfd_elf_get_sec_type_attr (abfd, sec);
10905
10906 return ppc_elf_get_sec_type_attr (abfd, sec);
10907}
9d8504b1
PB
10908
10909/* Like ppc_elf_link_hash_table_create, but overrides
10910 appropriately for VxWorks. */
10911static struct bfd_link_hash_table *
10912ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10913{
10914 struct bfd_link_hash_table *ret;
10915
10916 ret = ppc_elf_link_hash_table_create (abfd);
10917 if (ret)
10918 {
10919 struct ppc_elf_link_hash_table *htab
10920 = (struct ppc_elf_link_hash_table *)ret;
10921 htab->is_vxworks = 1;
4a3dc543 10922 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
10923 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10924 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10925 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10926 }
10927 return ret;
10928}
10929
10930/* Tweak magic VxWorks symbols as they are loaded. */
10931static bfd_boolean
10932ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10933 struct bfd_link_info *info,
10934 Elf_Internal_Sym *sym,
10935 const char **namep ATTRIBUTE_UNUSED,
10936 flagword *flagsp ATTRIBUTE_UNUSED,
10937 asection **secp,
10938 bfd_vma *valp)
10939{
10940 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10941 valp))
10942 return FALSE;
10943
10944 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10945}
10946
9d8504b1
PB
10947static void
10948ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10949{
10950 ppc_elf_final_write_processing(abfd, linker);
10951 elf_vxworks_final_write_processing(abfd, linker);
10952}
10953
10954/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10955 define it. */
10956#undef elf_backend_want_plt_sym
10957#define elf_backend_want_plt_sym 1
10958#undef elf_backend_want_got_plt
10959#define elf_backend_want_got_plt 1
10960#undef elf_backend_got_symbol_offset
10961#define elf_backend_got_symbol_offset 0
10962#undef elf_backend_plt_not_loaded
10963#define elf_backend_plt_not_loaded 0
10964#undef elf_backend_plt_readonly
10965#define elf_backend_plt_readonly 1
10966#undef elf_backend_got_header_size
10967#define elf_backend_got_header_size 12
10968
468392fb
AM
10969#undef bfd_elf32_get_synthetic_symtab
10970
9d8504b1
PB
10971#undef bfd_elf32_bfd_link_hash_table_create
10972#define bfd_elf32_bfd_link_hash_table_create \
10973 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
10974#undef elf_backend_add_symbol_hook
10975#define elf_backend_add_symbol_hook \
10976 ppc_elf_vxworks_add_symbol_hook
10977#undef elf_backend_link_output_symbol_hook
10978#define elf_backend_link_output_symbol_hook \
9c72ff84 10979 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
10980#undef elf_backend_final_write_processing
10981#define elf_backend_final_write_processing \
10982 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
10983#undef elf_backend_get_sec_type_attr
10984#define elf_backend_get_sec_type_attr \
10985 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
10986#undef elf_backend_emit_relocs
10987#define elf_backend_emit_relocs \
10988 elf_vxworks_emit_relocs
10989
10990#undef elf32_bed
10991#define elf32_bed ppc_elf_vxworks_bed
e054468f 10992#undef elf_backend_post_process_headers
9d8504b1
PB
10993
10994#include "elf32-target.h"
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