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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
b90efa5b 2 Copyright (C) 1994-2015 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"
70a38d42 38#include "elf-linux-psinfo.h"
252b5132 39
b9c361e0
JL
40typedef enum split16_format_type
41{
42 split16a_type = 0,
43 split16d_type
44}
45split16_format_type;
46
f0fe0e16 47/* RELA relocations are used here. */
252b5132 48
252b5132 49static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 51static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 53
70bccea4
AM
54/* Branch prediction bit for branch taken relocs. */
55#define BRANCH_PREDICT_BIT 0x200000
56/* Mask to set RA in memory instructions. */
57#define RA_REGISTER_MASK 0x001f0000
58/* Value to shift register by to insert RA. */
59#define RA_REGISTER_SHIFT 16
252b5132
RH
60
61/* The name of the dynamic interpreter. This is put in the .interp
62 section. */
252b5132
RH
63#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64
d7128ce4 65/* For old-style PLT. */
252b5132
RH
66/* The number of single-slot PLT entries (the rest use two slots). */
67#define PLT_NUM_SINGLE_ENTRIES 8192
68
d7128ce4 69/* For new-style .glink and .plt. */
a6aa5195 70#define GLINK_PLTRESOLVE 16*4
d7128ce4 71#define GLINK_ENTRY_SIZE 4*4
a7f2871e 72#define TLS_GET_ADDR_GLINK_SIZE 12*4
d7128ce4 73
9d8504b1
PB
74/* VxWorks uses its own plt layout, filled in by the static linker. */
75
76/* The standard VxWorks PLT entry. */
77#define VXWORKS_PLT_ENTRY_SIZE 32
78static const bfd_vma ppc_elf_vxworks_plt_entry
79 [VXWORKS_PLT_ENTRY_SIZE / 4] =
80 {
81 0x3d800000, /* lis r12,0 */
82 0x818c0000, /* lwz r12,0(r12) */
83 0x7d8903a6, /* mtctr r12 */
84 0x4e800420, /* bctr */
85 0x39600000, /* li r11,0 */
86 0x48000000, /* b 14 <.PLT0resolve+0x4> */
87 0x60000000, /* nop */
88 0x60000000, /* nop */
89 };
90static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 [VXWORKS_PLT_ENTRY_SIZE / 4] =
92 {
93 0x3d9e0000, /* addis r12,r30,0 */
94 0x818c0000, /* lwz r12,0(r12) */
95 0x7d8903a6, /* mtctr r12 */
96 0x4e800420, /* bctr */
97 0x39600000, /* li r11,0 */
98 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
99 0x60000000, /* nop */
100 0x60000000, /* nop */
101 };
102
103/* The initial VxWorks PLT entry. */
104#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105static const bfd_vma ppc_elf_vxworks_plt0_entry
106 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
107 {
108 0x3d800000, /* lis r12,0 */
109 0x398c0000, /* addi r12,r12,0 */
110 0x800c0008, /* lwz r0,8(r12) */
111 0x7c0903a6, /* mtctr r0 */
112 0x818c0004, /* lwz r12,4(r12) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
116 };
117static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
119 {
120 0x819e0008, /* lwz r12,8(r30) */
121 0x7d8903a6, /* mtctr r12 */
122 0x819e0004, /* lwz r12,4(r30) */
123 0x4e800420, /* bctr */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
128 };
129
130/* For executables, we have some additional relocations in
131 .rela.plt.unloaded, for the kernel loader. */
132
133/* The number of non-JMP_SLOT relocations per PLT0 slot. */
134#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135/* The number of relocations in the PLTResolve slot. */
136#define VXWORKS_PLTRESOLVE_RELOCS 2
137/* The number of relocations in the PLTResolve slot when when creating
138 a shared library. */
139#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
140
d7128ce4 141/* Some instructions. */
d7128ce4 142#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM
143#define ADDIS_11_30 0x3d7e0000
144#define ADDIS_12_12 0x3d8c0000
d7128ce4 145#define ADDI_11_11 0x396b0000
d7128ce4 146#define ADD_0_11_11 0x7c0b5a14
a7f2871e 147#define ADD_3_12_2 0x7c6c1214
d7128ce4 148#define ADD_11_0_11 0x7d605a14
a6aa5195 149#define B 0x48000000
da3a2088 150#define BA 0x48000002
a6aa5195 151#define BCL_20_31 0x429f0005
d7128ce4 152#define BCTR 0x4e800420
a7f2871e
AM
153#define BEQLR 0x4d820020
154#define CMPWI_11_0 0x2c0b0000
7e8aeb9a
AM
155#define LIS_11 0x3d600000
156#define LIS_12 0x3d800000
a6aa5195
AM
157#define LWZU_0_12 0x840c0000
158#define LWZ_0_12 0x800c0000
a7f2871e 159#define LWZ_11_3 0x81630000
a6aa5195
AM
160#define LWZ_11_11 0x816b0000
161#define LWZ_11_30 0x817e0000
a7f2871e 162#define LWZ_12_3 0x81830000
a6aa5195 163#define LWZ_12_12 0x818c0000
a7f2871e
AM
164#define MR_0_3 0x7c601b78
165#define MR_3_0 0x7c030378
a6aa5195
AM
166#define MFLR_0 0x7c0802a6
167#define MFLR_12 0x7d8802a6
168#define MTCTR_0 0x7c0903a6
169#define MTCTR_11 0x7d6903a6
170#define MTLR_0 0x7c0803a6
171#define NOP 0x60000000
172#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM
173
174/* Offset of tp and dtp pointers from start of TLS block. */
175#define TP_OFFSET 0x7000
176#define DTP_OFFSET 0x8000
e87d4038
AM
177
178/* The value of a defined global symbol. */
179#define SYM_VAL(SYM) \
180 ((SYM)->root.u.def.section->output_section->vma \
181 + (SYM)->root.u.def.section->output_offset \
182 + (SYM)->root.u.def.value)
7fce784e 183\f
e47cd125 184static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 185
8da6118f 186static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH
187 /* This reloc does nothing. */
188 HOWTO (R_PPC_NONE, /* type */
189 0, /* rightshift */
6346d5ca
AM
190 3, /* size (0 = byte, 1 = short, 2 = long) */
191 0, /* bitsize */
b34976b6 192 FALSE, /* pc_relative */
252b5132 193 0, /* bitpos */
86c95733 194 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
195 bfd_elf_generic_reloc, /* special_function */
196 "R_PPC_NONE", /* name */
b34976b6 197 FALSE, /* partial_inplace */
252b5132
RH
198 0, /* src_mask */
199 0, /* dst_mask */
b34976b6 200 FALSE), /* pcrel_offset */
252b5132
RH
201
202 /* A standard 32 bit relocation. */
203 HOWTO (R_PPC_ADDR32, /* type */
204 0, /* rightshift */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
206 32, /* bitsize */
b34976b6 207 FALSE, /* pc_relative */
252b5132 208 0, /* bitpos */
86c95733 209 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
210 bfd_elf_generic_reloc, /* special_function */
211 "R_PPC_ADDR32", /* name */
b34976b6 212 FALSE, /* partial_inplace */
252b5132
RH
213 0, /* src_mask */
214 0xffffffff, /* dst_mask */
b34976b6 215 FALSE), /* pcrel_offset */
252b5132
RH
216
217 /* An absolute 26 bit branch; the lower two bits must be zero.
218 FIXME: we don't check that, we just clear them. */
219 HOWTO (R_PPC_ADDR24, /* type */
220 0, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 26, /* bitsize */
b34976b6 223 FALSE, /* pc_relative */
252b5132 224 0, /* bitpos */
86c95733 225 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC_ADDR24", /* name */
b34976b6 228 FALSE, /* partial_inplace */
252b5132
RH
229 0, /* src_mask */
230 0x3fffffc, /* dst_mask */
b34976b6 231 FALSE), /* pcrel_offset */
252b5132
RH
232
233 /* A standard 16 bit relocation. */
234 HOWTO (R_PPC_ADDR16, /* type */
235 0, /* rightshift */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
237 16, /* bitsize */
b34976b6 238 FALSE, /* pc_relative */
252b5132
RH
239 0, /* bitpos */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC_ADDR16", /* name */
b34976b6 243 FALSE, /* partial_inplace */
252b5132
RH
244 0, /* src_mask */
245 0xffff, /* dst_mask */
b34976b6 246 FALSE), /* pcrel_offset */
252b5132
RH
247
248 /* A 16 bit relocation without overflow. */
249 HOWTO (R_PPC_ADDR16_LO, /* type */
250 0, /* rightshift */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
252 16, /* bitsize */
b34976b6 253 FALSE, /* pc_relative */
252b5132
RH
254 0, /* bitpos */
255 complain_overflow_dont,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_PPC_ADDR16_LO", /* name */
b34976b6 258 FALSE, /* partial_inplace */
252b5132
RH
259 0, /* src_mask */
260 0xffff, /* dst_mask */
b34976b6 261 FALSE), /* pcrel_offset */
252b5132
RH
262
263 /* The high order 16 bits of an address. */
264 HOWTO (R_PPC_ADDR16_HI, /* type */
265 16, /* rightshift */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
b34976b6 268 FALSE, /* pc_relative */
252b5132
RH
269 0, /* bitpos */
270 complain_overflow_dont, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_PPC_ADDR16_HI", /* name */
b34976b6 273 FALSE, /* partial_inplace */
252b5132
RH
274 0, /* src_mask */
275 0xffff, /* dst_mask */
b34976b6 276 FALSE), /* pcrel_offset */
252b5132
RH
277
278 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 279 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH
280 HOWTO (R_PPC_ADDR16_HA, /* type */
281 16, /* rightshift */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
283 16, /* bitsize */
b34976b6 284 FALSE, /* pc_relative */
252b5132
RH
285 0, /* bitpos */
286 complain_overflow_dont, /* complain_on_overflow */
287 ppc_elf_addr16_ha_reloc, /* special_function */
288 "R_PPC_ADDR16_HA", /* name */
b34976b6 289 FALSE, /* partial_inplace */
252b5132
RH
290 0, /* src_mask */
291 0xffff, /* dst_mask */
b34976b6 292 FALSE), /* pcrel_offset */
252b5132
RH
293
294 /* An absolute 16 bit branch; the lower two bits must be zero.
295 FIXME: we don't check that, we just clear them. */
296 HOWTO (R_PPC_ADDR14, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
b34976b6 300 FALSE, /* pc_relative */
252b5132 301 0, /* bitpos */
86c95733 302 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14", /* name */
b34976b6 305 FALSE, /* partial_inplace */
252b5132
RH
306 0, /* src_mask */
307 0xfffc, /* dst_mask */
b34976b6 308 FALSE), /* pcrel_offset */
252b5132
RH
309
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is expected to be taken. The lower two
8da6118f 312 bits must be zero. */
252b5132
RH
313 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
314 0, /* rightshift */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
316 16, /* bitsize */
b34976b6 317 FALSE, /* pc_relative */
252b5132 318 0, /* bitpos */
86c95733 319 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 322 FALSE, /* partial_inplace */
252b5132
RH
323 0, /* src_mask */
324 0xfffc, /* dst_mask */
b34976b6 325 FALSE), /* pcrel_offset */
252b5132
RH
326
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is not expected to be taken. The lower
329 two bits must be zero. */
330 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
331 0, /* rightshift */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
333 16, /* bitsize */
b34976b6 334 FALSE, /* pc_relative */
252b5132 335 0, /* bitpos */
86c95733 336 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 339 FALSE, /* partial_inplace */
252b5132
RH
340 0, /* src_mask */
341 0xfffc, /* dst_mask */
b34976b6 342 FALSE), /* pcrel_offset */
252b5132 343
8da6118f 344 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH
345 HOWTO (R_PPC_REL24, /* type */
346 0, /* rightshift */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
348 26, /* bitsize */
b34976b6 349 TRUE, /* pc_relative */
252b5132
RH
350 0, /* bitpos */
351 complain_overflow_signed, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC_REL24", /* name */
b34976b6 354 FALSE, /* partial_inplace */
252b5132
RH
355 0, /* src_mask */
356 0x3fffffc, /* dst_mask */
b34976b6 357 TRUE), /* pcrel_offset */
252b5132 358
8da6118f 359 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH
360 HOWTO (R_PPC_REL14, /* type */
361 0, /* rightshift */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
363 16, /* bitsize */
b34976b6 364 TRUE, /* pc_relative */
252b5132
RH
365 0, /* bitpos */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14", /* name */
b34976b6 369 FALSE, /* partial_inplace */
252b5132
RH
370 0, /* src_mask */
371 0xfffc, /* dst_mask */
b34976b6 372 TRUE), /* pcrel_offset */
252b5132 373
8da6118f 374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
375 the branch is expected to be taken. The lower two bits must be
376 zero. */
377 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
b34976b6 381 TRUE, /* pc_relative */
252b5132
RH
382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 386 FALSE, /* partial_inplace */
252b5132
RH
387 0, /* src_mask */
388 0xfffc, /* dst_mask */
b34976b6 389 TRUE), /* pcrel_offset */
252b5132 390
8da6118f 391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
392 the branch is not expected to be taken. The lower two bits must
393 be zero. */
394 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 16, /* bitsize */
b34976b6 398 TRUE, /* pc_relative */
252b5132
RH
399 0, /* bitpos */
400 complain_overflow_signed, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 403 FALSE, /* partial_inplace */
252b5132
RH
404 0, /* src_mask */
405 0xfffc, /* dst_mask */
b34976b6 406 TRUE), /* pcrel_offset */
252b5132
RH
407
408 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
409 symbol. */
410 HOWTO (R_PPC_GOT16, /* type */
411 0, /* rightshift */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
b34976b6 414 FALSE, /* pc_relative */
252b5132
RH
415 0, /* bitpos */
416 complain_overflow_signed, /* complain_on_overflow */
417 bfd_elf_generic_reloc, /* special_function */
418 "R_PPC_GOT16", /* name */
b34976b6 419 FALSE, /* partial_inplace */
252b5132
RH
420 0, /* src_mask */
421 0xffff, /* dst_mask */
b34976b6 422 FALSE), /* pcrel_offset */
252b5132
RH
423
424 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
425 the symbol. */
426 HOWTO (R_PPC_GOT16_LO, /* type */
427 0, /* rightshift */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
429 16, /* bitsize */
b34976b6 430 FALSE, /* pc_relative */
252b5132
RH
431 0, /* bitpos */
432 complain_overflow_dont, /* complain_on_overflow */
433 bfd_elf_generic_reloc, /* special_function */
434 "R_PPC_GOT16_LO", /* name */
b34976b6 435 FALSE, /* partial_inplace */
252b5132
RH
436 0, /* src_mask */
437 0xffff, /* dst_mask */
b34976b6 438 FALSE), /* pcrel_offset */
252b5132
RH
439
440 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
441 the symbol. */
442 HOWTO (R_PPC_GOT16_HI, /* type */
443 16, /* rightshift */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
445 16, /* bitsize */
b34976b6 446 FALSE, /* pc_relative */
252b5132 447 0, /* bitpos */
86c95733 448 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
449 bfd_elf_generic_reloc, /* special_function */
450 "R_PPC_GOT16_HI", /* name */
b34976b6 451 FALSE, /* partial_inplace */
252b5132
RH
452 0, /* src_mask */
453 0xffff, /* dst_mask */
b34976b6 454 FALSE), /* pcrel_offset */
252b5132
RH
455
456 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
457 the symbol. */
458 HOWTO (R_PPC_GOT16_HA, /* type */
459 16, /* rightshift */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
461 16, /* bitsize */
b34976b6 462 FALSE, /* pc_relative */
252b5132 463 0, /* bitpos */
86c95733 464 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
465 ppc_elf_addr16_ha_reloc, /* special_function */
466 "R_PPC_GOT16_HA", /* name */
b34976b6 467 FALSE, /* partial_inplace */
252b5132
RH
468 0, /* src_mask */
469 0xffff, /* dst_mask */
b34976b6 470 FALSE), /* pcrel_offset */
252b5132
RH
471
472 /* Like R_PPC_REL24, but referring to the procedure linkage table
473 entry for the symbol. */
474 HOWTO (R_PPC_PLTREL24, /* type */
475 0, /* rightshift */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
477 26, /* bitsize */
b34976b6 478 TRUE, /* pc_relative */
252b5132
RH
479 0, /* bitpos */
480 complain_overflow_signed, /* complain_on_overflow */
481 bfd_elf_generic_reloc, /* special_function */
482 "R_PPC_PLTREL24", /* name */
b34976b6 483 FALSE, /* partial_inplace */
252b5132
RH
484 0, /* src_mask */
485 0x3fffffc, /* dst_mask */
b34976b6 486 TRUE), /* pcrel_offset */
252b5132
RH
487
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC_COPY, /* type */
494 0, /* rightshift */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
496 32, /* bitsize */
b34976b6 497 FALSE, /* pc_relative */
252b5132 498 0, /* bitpos */
86c95733 499 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
500 bfd_elf_generic_reloc, /* special_function */
501 "R_PPC_COPY", /* name */
b34976b6 502 FALSE, /* partial_inplace */
252b5132
RH
503 0, /* src_mask */
504 0, /* dst_mask */
b34976b6 505 FALSE), /* pcrel_offset */
252b5132
RH
506
507 /* Like R_PPC_ADDR32, but used when setting global offset table
508 entries. */
509 HOWTO (R_PPC_GLOB_DAT, /* type */
510 0, /* rightshift */
511 2, /* size (0 = byte, 1 = short, 2 = long) */
512 32, /* bitsize */
b34976b6 513 FALSE, /* pc_relative */
252b5132 514 0, /* bitpos */
86c95733 515 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
516 bfd_elf_generic_reloc, /* special_function */
517 "R_PPC_GLOB_DAT", /* name */
b34976b6 518 FALSE, /* partial_inplace */
252b5132
RH
519 0, /* src_mask */
520 0xffffffff, /* dst_mask */
b34976b6 521 FALSE), /* pcrel_offset */
252b5132
RH
522
523 /* Marks a procedure linkage table entry for a symbol. */
524 HOWTO (R_PPC_JMP_SLOT, /* type */
525 0, /* rightshift */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
527 32, /* bitsize */
b34976b6 528 FALSE, /* pc_relative */
252b5132 529 0, /* bitpos */
86c95733 530 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
531 bfd_elf_generic_reloc, /* special_function */
532 "R_PPC_JMP_SLOT", /* name */
b34976b6 533 FALSE, /* partial_inplace */
252b5132
RH
534 0, /* src_mask */
535 0, /* dst_mask */
b34976b6 536 FALSE), /* pcrel_offset */
252b5132
RH
537
538 /* Used only by the dynamic linker. When the object is run, this
539 longword is set to the load address of the object, plus the
540 addend. */
541 HOWTO (R_PPC_RELATIVE, /* type */
542 0, /* rightshift */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
544 32, /* bitsize */
b34976b6 545 FALSE, /* pc_relative */
252b5132 546 0, /* bitpos */
86c95733 547 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_RELATIVE", /* name */
b34976b6 550 FALSE, /* partial_inplace */
252b5132
RH
551 0, /* src_mask */
552 0xffffffff, /* dst_mask */
b34976b6 553 FALSE), /* pcrel_offset */
252b5132
RH
554
555 /* Like R_PPC_REL24, but uses the value of the symbol within the
556 object rather than the final value. Normally used for
557 _GLOBAL_OFFSET_TABLE_. */
558 HOWTO (R_PPC_LOCAL24PC, /* type */
559 0, /* rightshift */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
561 26, /* bitsize */
b34976b6 562 TRUE, /* pc_relative */
252b5132
RH
563 0, /* bitpos */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC_LOCAL24PC", /* name */
b34976b6 567 FALSE, /* partial_inplace */
252b5132
RH
568 0, /* src_mask */
569 0x3fffffc, /* dst_mask */
b34976b6 570 TRUE), /* pcrel_offset */
252b5132
RH
571
572 /* Like R_PPC_ADDR32, but may be unaligned. */
573 HOWTO (R_PPC_UADDR32, /* type */
574 0, /* rightshift */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
576 32, /* bitsize */
b34976b6 577 FALSE, /* pc_relative */
252b5132 578 0, /* bitpos */
86c95733 579 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC_UADDR32", /* name */
b34976b6 582 FALSE, /* partial_inplace */
252b5132
RH
583 0, /* src_mask */
584 0xffffffff, /* dst_mask */
b34976b6 585 FALSE), /* pcrel_offset */
252b5132
RH
586
587 /* Like R_PPC_ADDR16, but may be unaligned. */
588 HOWTO (R_PPC_UADDR16, /* type */
589 0, /* rightshift */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
591 16, /* bitsize */
b34976b6 592 FALSE, /* pc_relative */
252b5132
RH
593 0, /* bitpos */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC_UADDR16", /* name */
b34976b6 597 FALSE, /* partial_inplace */
252b5132
RH
598 0, /* src_mask */
599 0xffff, /* dst_mask */
b34976b6 600 FALSE), /* pcrel_offset */
252b5132
RH
601
602 /* 32-bit PC relative */
603 HOWTO (R_PPC_REL32, /* type */
604 0, /* rightshift */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
606 32, /* bitsize */
b34976b6 607 TRUE, /* pc_relative */
252b5132 608 0, /* bitpos */
86c95733 609 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC_REL32", /* name */
b34976b6 612 FALSE, /* partial_inplace */
252b5132
RH
613 0, /* src_mask */
614 0xffffffff, /* dst_mask */
b34976b6 615 TRUE), /* pcrel_offset */
252b5132
RH
616
617 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 618 FIXME: not supported. */
252b5132
RH
619 HOWTO (R_PPC_PLT32, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
b34976b6 623 FALSE, /* pc_relative */
252b5132 624 0, /* bitpos */
86c95733 625 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
626 bfd_elf_generic_reloc, /* special_function */
627 "R_PPC_PLT32", /* name */
b34976b6 628 FALSE, /* partial_inplace */
252b5132
RH
629 0, /* src_mask */
630 0, /* dst_mask */
b34976b6 631 FALSE), /* pcrel_offset */
252b5132
RH
632
633 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 634 FIXME: not supported. */
252b5132
RH
635 HOWTO (R_PPC_PLTREL32, /* type */
636 0, /* rightshift */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
638 32, /* bitsize */
b34976b6 639 TRUE, /* pc_relative */
252b5132 640 0, /* bitpos */
86c95733 641 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
642 bfd_elf_generic_reloc, /* special_function */
643 "R_PPC_PLTREL32", /* name */
b34976b6 644 FALSE, /* partial_inplace */
252b5132
RH
645 0, /* src_mask */
646 0, /* dst_mask */
b34976b6 647 TRUE), /* pcrel_offset */
252b5132
RH
648
649 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
650 the symbol. */
651 HOWTO (R_PPC_PLT16_LO, /* type */
652 0, /* rightshift */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
654 16, /* bitsize */
b34976b6 655 FALSE, /* pc_relative */
252b5132
RH
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 bfd_elf_generic_reloc, /* special_function */
659 "R_PPC_PLT16_LO", /* name */
b34976b6 660 FALSE, /* partial_inplace */
252b5132
RH
661 0, /* src_mask */
662 0xffff, /* dst_mask */
b34976b6 663 FALSE), /* pcrel_offset */
252b5132
RH
664
665 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
666 the symbol. */
667 HOWTO (R_PPC_PLT16_HI, /* type */
668 16, /* rightshift */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
670 16, /* bitsize */
b34976b6 671 FALSE, /* pc_relative */
252b5132 672 0, /* bitpos */
86c95733 673 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
674 bfd_elf_generic_reloc, /* special_function */
675 "R_PPC_PLT16_HI", /* name */
b34976b6 676 FALSE, /* partial_inplace */
252b5132
RH
677 0, /* src_mask */
678 0xffff, /* dst_mask */
b34976b6 679 FALSE), /* pcrel_offset */
252b5132
RH
680
681 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
682 the symbol. */
683 HOWTO (R_PPC_PLT16_HA, /* type */
684 16, /* rightshift */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
686 16, /* bitsize */
b34976b6 687 FALSE, /* pc_relative */
252b5132 688 0, /* bitpos */
86c95733 689 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
690 ppc_elf_addr16_ha_reloc, /* special_function */
691 "R_PPC_PLT16_HA", /* name */
b34976b6 692 FALSE, /* partial_inplace */
252b5132
RH
693 0, /* src_mask */
694 0xffff, /* dst_mask */
b34976b6 695 FALSE), /* pcrel_offset */
252b5132
RH
696
697 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
698 small data items. */
699 HOWTO (R_PPC_SDAREL16, /* type */
700 0, /* rightshift */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
b34976b6 703 FALSE, /* pc_relative */
252b5132
RH
704 0, /* bitpos */
705 complain_overflow_signed, /* complain_on_overflow */
706 bfd_elf_generic_reloc, /* special_function */
707 "R_PPC_SDAREL16", /* name */
b34976b6 708 FALSE, /* partial_inplace */
252b5132
RH
709 0, /* src_mask */
710 0xffff, /* dst_mask */
b34976b6 711 FALSE), /* pcrel_offset */
252b5132 712
c061c2d8 713 /* 16-bit section relative relocation. */
252b5132
RH
714 HOWTO (R_PPC_SECTOFF, /* type */
715 0, /* rightshift */
c061c2d8
AM
716 1, /* size (0 = byte, 1 = short, 2 = long) */
717 16, /* bitsize */
b34976b6 718 FALSE, /* pc_relative */
252b5132 719 0, /* bitpos */
86c95733 720 complain_overflow_signed, /* complain_on_overflow */
252b5132
RH
721 bfd_elf_generic_reloc, /* special_function */
722 "R_PPC_SECTOFF", /* name */
b34976b6 723 FALSE, /* partial_inplace */
252b5132 724 0, /* src_mask */
c061c2d8 725 0xffff, /* dst_mask */
b34976b6 726 FALSE), /* pcrel_offset */
252b5132 727
c3668558 728 /* 16-bit lower half section relative relocation. */
252b5132
RH
729 HOWTO (R_PPC_SECTOFF_LO, /* type */
730 0, /* rightshift */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
732 16, /* bitsize */
b34976b6 733 FALSE, /* pc_relative */
252b5132
RH
734 0, /* bitpos */
735 complain_overflow_dont, /* complain_on_overflow */
736 bfd_elf_generic_reloc, /* special_function */
737 "R_PPC_SECTOFF_LO", /* name */
b34976b6 738 FALSE, /* partial_inplace */
252b5132
RH
739 0, /* src_mask */
740 0xffff, /* dst_mask */
b34976b6 741 FALSE), /* pcrel_offset */
252b5132 742
c3668558 743 /* 16-bit upper half section relative relocation. */
252b5132
RH
744 HOWTO (R_PPC_SECTOFF_HI, /* type */
745 16, /* rightshift */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
747 16, /* bitsize */
b34976b6 748 FALSE, /* pc_relative */
252b5132 749 0, /* bitpos */
86c95733 750 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
751 bfd_elf_generic_reloc, /* special_function */
752 "R_PPC_SECTOFF_HI", /* name */
b34976b6 753 FALSE, /* partial_inplace */
252b5132
RH
754 0, /* src_mask */
755 0xffff, /* dst_mask */
b34976b6 756 FALSE), /* pcrel_offset */
252b5132 757
c3668558 758 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH
759 HOWTO (R_PPC_SECTOFF_HA, /* type */
760 16, /* rightshift */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
762 16, /* bitsize */
b34976b6 763 FALSE, /* pc_relative */
252b5132 764 0, /* bitpos */
86c95733 765 complain_overflow_dont, /* complain_on_overflow */
252b5132
RH
766 ppc_elf_addr16_ha_reloc, /* special_function */
767 "R_PPC_SECTOFF_HA", /* name */
b34976b6 768 FALSE, /* partial_inplace */
252b5132
RH
769 0, /* src_mask */
770 0xffff, /* dst_mask */
b34976b6 771 FALSE), /* pcrel_offset */
252b5132 772
727fc41e 773 /* Marker relocs for TLS. */
7619e7c7 774 HOWTO (R_PPC_TLS,
252b5132
RH
775 0, /* rightshift */
776 2, /* size (0 = byte, 1 = short, 2 = long) */
777 32, /* bitsize */
b34976b6 778 FALSE, /* pc_relative */
252b5132 779 0, /* bitpos */
7619e7c7 780 complain_overflow_dont, /* complain_on_overflow */
252b5132 781 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM
782 "R_PPC_TLS", /* name */
783 FALSE, /* partial_inplace */
784 0, /* src_mask */
785 0, /* dst_mask */
786 FALSE), /* pcrel_offset */
787
727fc41e
AM
788 HOWTO (R_PPC_TLSGD,
789 0, /* rightshift */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
791 32, /* bitsize */
792 FALSE, /* pc_relative */
793 0, /* bitpos */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC_TLSGD", /* name */
797 FALSE, /* partial_inplace */
798 0, /* src_mask */
799 0, /* dst_mask */
800 FALSE), /* pcrel_offset */
801
802 HOWTO (R_PPC_TLSLD,
803 0, /* rightshift */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
805 32, /* bitsize */
806 FALSE, /* pc_relative */
807 0, /* bitpos */
808 complain_overflow_dont, /* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_PPC_TLSLD", /* name */
811 FALSE, /* partial_inplace */
812 0, /* src_mask */
813 0, /* dst_mask */
814 FALSE), /* pcrel_offset */
815
7619e7c7
AM
816 /* Computes the load module index of the load module that contains the
817 definition of its TLS sym. */
818 HOWTO (R_PPC_DTPMOD32,
819 0, /* rightshift */
820 2, /* size (0 = byte, 1 = short, 2 = long) */
821 32, /* bitsize */
822 FALSE, /* pc_relative */
823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPMOD32", /* name */
b34976b6 827 FALSE, /* partial_inplace */
252b5132
RH
828 0, /* src_mask */
829 0xffffffff, /* dst_mask */
b34976b6 830 FALSE), /* pcrel_offset */
252b5132 831
7619e7c7
AM
832 /* Computes a dtv-relative displacement, the difference between the value
833 of sym+add and the base address of the thread-local storage block that
834 contains the definition of sym, minus 0x8000. */
835 HOWTO (R_PPC_DTPREL32,
836 0, /* rightshift */
837 2, /* size (0 = byte, 1 = short, 2 = long) */
838 32, /* bitsize */
839 FALSE, /* pc_relative */
840 0, /* bitpos */
841 complain_overflow_dont, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL32", /* name */
844 FALSE, /* partial_inplace */
845 0, /* src_mask */
846 0xffffffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
848
849 /* A 16 bit dtprel reloc. */
850 HOWTO (R_PPC_DTPREL16,
252b5132
RH
851 0, /* rightshift */
852 1, /* size (0 = byte, 1 = short, 2 = long) */
853 16, /* bitsize */
b34976b6 854 FALSE, /* pc_relative */
252b5132 855 0, /* bitpos */
7619e7c7
AM
856 complain_overflow_signed, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16", /* name */
b34976b6 859 FALSE, /* partial_inplace */
252b5132
RH
860 0, /* src_mask */
861 0xffff, /* dst_mask */
b34976b6 862 FALSE), /* pcrel_offset */
252b5132 863
7619e7c7
AM
864 /* Like DTPREL16, but no overflow. */
865 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH
866 0, /* rightshift */
867 1, /* size (0 = byte, 1 = short, 2 = long) */
868 16, /* bitsize */
b34976b6 869 FALSE, /* pc_relative */
252b5132 870 0, /* bitpos */
7619e7c7
AM
871 complain_overflow_dont, /* complain_on_overflow */
872 ppc_elf_unhandled_reloc, /* special_function */
873 "R_PPC_DTPREL16_LO", /* name */
b34976b6 874 FALSE, /* partial_inplace */
252b5132
RH
875 0, /* src_mask */
876 0xffff, /* dst_mask */
b34976b6 877 FALSE), /* pcrel_offset */
252b5132 878
7619e7c7
AM
879 /* Like DTPREL16_LO, but next higher group of 16 bits. */
880 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH
881 16, /* rightshift */
882 1, /* size (0 = byte, 1 = short, 2 = long) */
883 16, /* bitsize */
b34976b6 884 FALSE, /* pc_relative */
252b5132
RH
885 0, /* bitpos */
886 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
887 ppc_elf_unhandled_reloc, /* special_function */
888 "R_PPC_DTPREL16_HI", /* name */
b34976b6 889 FALSE, /* partial_inplace */
252b5132
RH
890 0, /* src_mask */
891 0xffff, /* dst_mask */
b34976b6 892 FALSE), /* pcrel_offset */
252b5132 893
7619e7c7
AM
894 /* Like DTPREL16_HI, but adjust for low 16 bits. */
895 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH
896 16, /* rightshift */
897 1, /* size (0 = byte, 1 = short, 2 = long) */
898 16, /* bitsize */
b34976b6 899 FALSE, /* pc_relative */
252b5132
RH
900 0, /* bitpos */
901 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
902 ppc_elf_unhandled_reloc, /* special_function */
903 "R_PPC_DTPREL16_HA", /* name */
b34976b6 904 FALSE, /* partial_inplace */
252b5132
RH
905 0, /* src_mask */
906 0xffff, /* dst_mask */
b34976b6 907 FALSE), /* pcrel_offset */
252b5132 908
7619e7c7
AM
909 /* Computes a tp-relative displacement, the difference between the value of
910 sym+add and the value of the thread pointer (r13). */
911 HOWTO (R_PPC_TPREL32,
912 0, /* rightshift */
913 2, /* size (0 = byte, 1 = short, 2 = long) */
914 32, /* bitsize */
915 FALSE, /* pc_relative */
916 0, /* bitpos */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL32", /* name */
920 FALSE, /* partial_inplace */
921 0, /* src_mask */
922 0xffffffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
924
925 /* A 16 bit tprel reloc. */
926 HOWTO (R_PPC_TPREL16,
252b5132
RH
927 0, /* rightshift */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
929 16, /* bitsize */
b34976b6 930 FALSE, /* pc_relative */
252b5132 931 0, /* bitpos */
7619e7c7
AM
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16", /* name */
b34976b6 935 FALSE, /* partial_inplace */
252b5132
RH
936 0, /* src_mask */
937 0xffff, /* dst_mask */
b34976b6 938 FALSE), /* pcrel_offset */
252b5132 939
7619e7c7
AM
940 /* Like TPREL16, but no overflow. */
941 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH
942 0, /* rightshift */
943 1, /* size (0 = byte, 1 = short, 2 = long) */
944 16, /* bitsize */
b34976b6 945 FALSE, /* pc_relative */
252b5132 946 0, /* bitpos */
7619e7c7
AM
947 complain_overflow_dont, /* complain_on_overflow */
948 ppc_elf_unhandled_reloc, /* special_function */
949 "R_PPC_TPREL16_LO", /* name */
b34976b6 950 FALSE, /* partial_inplace */
252b5132
RH
951 0, /* src_mask */
952 0xffff, /* dst_mask */
b34976b6 953 FALSE), /* pcrel_offset */
252b5132 954
7619e7c7
AM
955 /* Like TPREL16_LO, but next higher group of 16 bits. */
956 HOWTO (R_PPC_TPREL16_HI,
957 16, /* rightshift */
958 1, /* size (0 = byte, 1 = short, 2 = long) */
959 16, /* bitsize */
960 FALSE, /* pc_relative */
961 0, /* bitpos */
962 complain_overflow_dont, /* complain_on_overflow */
963 ppc_elf_unhandled_reloc, /* special_function */
964 "R_PPC_TPREL16_HI", /* name */
965 FALSE, /* partial_inplace */
966 0, /* src_mask */
967 0xffff, /* dst_mask */
968 FALSE), /* pcrel_offset */
969
970 /* Like TPREL16_HI, but adjust for low 16 bits. */
971 HOWTO (R_PPC_TPREL16_HA,
972 16, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
975 FALSE, /* pc_relative */
976 0, /* bitpos */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_TPREL16_HA", /* name */
980 FALSE, /* partial_inplace */
981 0, /* src_mask */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
984
985 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
986 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
987 to the first entry. */
988 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH
989 0, /* rightshift */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
991 16, /* bitsize */
b34976b6 992 FALSE, /* pc_relative */
252b5132
RH
993 0, /* bitpos */
994 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 997 FALSE, /* partial_inplace */
252b5132
RH
998 0, /* src_mask */
999 0xffff, /* dst_mask */
b34976b6 1000 FALSE), /* pcrel_offset */
252b5132 1001
7619e7c7
AM
1002 /* Like GOT_TLSGD16, but no overflow. */
1003 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 1004 0, /* rightshift */
7619e7c7 1005 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 1006 16, /* bitsize */
b34976b6 1007 FALSE, /* pc_relative */
252b5132 1008 0, /* bitpos */
7619e7c7
AM
1009 complain_overflow_dont, /* complain_on_overflow */
1010 ppc_elf_unhandled_reloc, /* special_function */
1011 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 1012 FALSE, /* partial_inplace */
252b5132
RH
1013 0, /* src_mask */
1014 0xffff, /* dst_mask */
b34976b6 1015 FALSE), /* pcrel_offset */
252b5132 1016
7619e7c7
AM
1017 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1018 HOWTO (R_PPC_GOT_TLSGD16_HI,
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 16, /* bitsize */
1022 FALSE, /* pc_relative */
1023 0, /* bitpos */
1024 complain_overflow_dont, /* complain_on_overflow */
1025 ppc_elf_unhandled_reloc, /* special_function */
1026 "R_PPC_GOT_TLSGD16_HI", /* name */
1027 FALSE, /* partial_inplace */
1028 0, /* src_mask */
1029 0xffff, /* dst_mask */
1030 FALSE), /* pcrel_offset */
252b5132 1031
7619e7c7
AM
1032 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1033 HOWTO (R_PPC_GOT_TLSGD16_HA,
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 16, /* bitsize */
1037 FALSE, /* pc_relative */
1038 0, /* bitpos */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSGD16_HA", /* name */
1042 FALSE, /* partial_inplace */
1043 0, /* src_mask */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1046
1047 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1048 with values (sym+add)@dtpmod and zero, and computes the offset to the
1049 first entry. */
1050 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH
1051 0, /* rightshift */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1053 16, /* bitsize */
7619e7c7 1054 FALSE, /* pc_relative */
252b5132
RH
1055 0, /* bitpos */
1056 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1059 FALSE, /* partial_inplace */
252b5132
RH
1060 0, /* src_mask */
1061 0xffff, /* dst_mask */
b34976b6 1062 FALSE), /* pcrel_offset */
252b5132 1063
7619e7c7
AM
1064 /* Like GOT_TLSLD16, but no overflow. */
1065 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1066 0, /* rightshift */
7619e7c7
AM
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 16, /* bitsize */
b34976b6 1069 FALSE, /* pc_relative */
252b5132
RH
1070 0, /* bitpos */
1071 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1072 ppc_elf_unhandled_reloc, /* special_function */
1073 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1074 FALSE, /* partial_inplace */
252b5132 1075 0, /* src_mask */
7619e7c7 1076 0xffff, /* dst_mask */
b34976b6 1077 FALSE), /* pcrel_offset */
252b5132 1078
7619e7c7
AM
1079 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1080 HOWTO (R_PPC_GOT_TLSLD16_HI,
1081 16, /* rightshift */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 16, /* bitsize */
b34976b6 1084 FALSE, /* pc_relative */
252b5132
RH
1085 0, /* bitpos */
1086 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1087 ppc_elf_unhandled_reloc, /* special_function */
1088 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1089 FALSE, /* partial_inplace */
252b5132 1090 0, /* src_mask */
7619e7c7 1091 0xffff, /* dst_mask */
b34976b6 1092 FALSE), /* pcrel_offset */
252b5132 1093
7619e7c7
AM
1094 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1095 HOWTO (R_PPC_GOT_TLSLD16_HA,
1096 16, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 ppc_elf_unhandled_reloc, /* special_function */
1103 "R_PPC_GOT_TLSLD16_HA", /* name */
1104 FALSE, /* partial_inplace */
1105 0, /* src_mask */
1106 0xffff, /* dst_mask */
1107 FALSE), /* pcrel_offset */
1108
1109 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1110 the offset to the entry. */
1111 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH
1112 0, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 16, /* bitsize */
b34976b6 1115 FALSE, /* pc_relative */
252b5132
RH
1116 0, /* bitpos */
1117 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1120 FALSE, /* partial_inplace */
252b5132
RH
1121 0, /* src_mask */
1122 0xffff, /* dst_mask */
b34976b6 1123 FALSE), /* pcrel_offset */
252b5132 1124
7619e7c7
AM
1125 /* Like GOT_DTPREL16, but no overflow. */
1126 HOWTO (R_PPC_GOT_DTPREL16_LO,
1127 0, /* rightshift */
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 ppc_elf_unhandled_reloc, /* special_function */
1134 "R_PPC_GOT_DTPREL16_LO", /* name */
1135 FALSE, /* partial_inplace */
1136 0, /* src_mask */
1137 0xffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
252b5132 1139
7619e7c7
AM
1140 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1141 HOWTO (R_PPC_GOT_DTPREL16_HI,
1142 16, /* rightshift */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 16, /* bitsize */
1145 FALSE, /* pc_relative */
1146 0, /* bitpos */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 ppc_elf_unhandled_reloc, /* special_function */
1149 "R_PPC_GOT_DTPREL16_HI", /* name */
1150 FALSE, /* partial_inplace */
1151 0, /* src_mask */
1152 0xffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
252b5132 1154
7619e7c7
AM
1155 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1156 HOWTO (R_PPC_GOT_DTPREL16_HA,
1157 16, /* rightshift */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 16, /* bitsize */
1160 FALSE, /* pc_relative */
1161 0, /* bitpos */
1162 complain_overflow_dont, /* complain_on_overflow */
1163 ppc_elf_unhandled_reloc, /* special_function */
1164 "R_PPC_GOT_DTPREL16_HA", /* name */
1165 FALSE, /* partial_inplace */
1166 0, /* src_mask */
1167 0xffff, /* dst_mask */
1168 FALSE), /* pcrel_offset */
c3668558 1169
7619e7c7
AM
1170 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1171 offset to the entry. */
1172 HOWTO (R_PPC_GOT_TPREL16,
1173 0, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 16, /* bitsize */
1176 FALSE, /* pc_relative */
1177 0, /* bitpos */
1178 complain_overflow_signed, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16", /* name */
1181 FALSE, /* partial_inplace */
1182 0, /* src_mask */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1185
1186 /* Like GOT_TPREL16, but no overflow. */
1187 HOWTO (R_PPC_GOT_TPREL16_LO,
1188 0, /* rightshift */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 16, /* bitsize */
1191 FALSE, /* pc_relative */
1192 0, /* bitpos */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc_elf_unhandled_reloc, /* special_function */
1195 "R_PPC_GOT_TPREL16_LO", /* name */
1196 FALSE, /* partial_inplace */
1197 0, /* src_mask */
1198 0xffff, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1200
1201 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1202 HOWTO (R_PPC_GOT_TPREL16_HI,
1203 16, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 16, /* bitsize */
1206 FALSE, /* pc_relative */
1207 0, /* bitpos */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc_elf_unhandled_reloc, /* special_function */
1210 "R_PPC_GOT_TPREL16_HI", /* name */
1211 FALSE, /* partial_inplace */
1212 0, /* src_mask */
1213 0xffff, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1215
1216 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1217 HOWTO (R_PPC_GOT_TPREL16_HA,
1218 16, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 16, /* bitsize */
1221 FALSE, /* pc_relative */
1222 0, /* bitpos */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc_elf_unhandled_reloc, /* special_function */
1225 "R_PPC_GOT_TPREL16_HA", /* name */
1226 FALSE, /* partial_inplace */
1227 0, /* src_mask */
1228 0xffff, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1230
1231 /* The remaining relocs are from the Embedded ELF ABI, and are not
1232 in the SVR4 ELF ABI. */
1233
1234 /* 32 bit value resulting from the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR32, /* type */
1236 0, /* rightshift */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1238 32, /* bitsize */
1239 FALSE, /* pc_relative */
1240 0, /* bitpos */
86c95733 1241 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1242 bfd_elf_generic_reloc, /* special_function */
1243 "R_PPC_EMB_NADDR32", /* name */
1244 FALSE, /* partial_inplace */
1245 0, /* src_mask */
1246 0xffffffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1248
1249 /* 16 bit value resulting from the addend minus the symbol. */
1250 HOWTO (R_PPC_EMB_NADDR16, /* type */
1251 0, /* rightshift */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1253 16, /* bitsize */
1254 FALSE, /* pc_relative */
1255 0, /* bitpos */
86c95733 1256 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1257 bfd_elf_generic_reloc, /* special_function */
1258 "R_PPC_EMB_NADDR16", /* name */
1259 FALSE, /* partial_inplace */
1260 0, /* src_mask */
1261 0xffff, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1263
1264 /* 16 bit value resulting from the addend minus the symbol. */
1265 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1266 0, /* rightshift */
1267 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 16, /* bitsize */
1269 FALSE, /* pc_relative */
1270 0, /* bitpos */
1271 complain_overflow_dont,/* complain_on_overflow */
1272 bfd_elf_generic_reloc, /* special_function */
1273 "R_PPC_EMB_ADDR16_LO", /* name */
1274 FALSE, /* partial_inplace */
1275 0, /* src_mask */
1276 0xffff, /* dst_mask */
1277 FALSE), /* pcrel_offset */
1278
1279 /* The high order 16 bits of the addend minus the symbol. */
1280 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 bfd_elf_generic_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HI", /* name */
1289 FALSE, /* partial_inplace */
1290 0, /* src_mask */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 /* The high order 16 bits of the result of the addend minus the address,
1295 plus 1 if the contents of the low 16 bits, treated as a signed number,
1296 is negative. */
1297 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1298 16, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 16, /* bitsize */
1301 FALSE, /* pc_relative */
1302 0, /* bitpos */
1303 complain_overflow_dont, /* complain_on_overflow */
25dbc73a
AM
1304 ppc_elf_addr16_ha_reloc, /* special_function */
1305 "R_PPC_EMB_NADDR16_HA", /* name */
1306 FALSE, /* partial_inplace */
1307 0, /* src_mask */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1310
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata section, and returning the offset from
1313 _SDA_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDAI16, /* type */
1315 0, /* rightshift */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 16, /* bitsize */
1318 FALSE, /* pc_relative */
1319 0, /* bitpos */
bd6c6e2b 1320 complain_overflow_signed, /* complain_on_overflow */
25dbc73a
AM
1321 bfd_elf_generic_reloc, /* special_function */
1322 "R_PPC_EMB_SDAI16", /* name */
1323 FALSE, /* partial_inplace */
1324 0, /* src_mask */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1327
1328 /* 16 bit value resulting from allocating a 4 byte word to hold an
1329 address in the .sdata2 section, and returning the offset from
1330 _SDA2_BASE_ for that relocation. */
1331 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1332 0, /* rightshift */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 16, /* bitsize */
1335 FALSE, /* pc_relative */
1336 0, /* bitpos */
bd6c6e2b 1337 complain_overflow_signed, /* complain_on_overflow */
25dbc73a
AM
1338 bfd_elf_generic_reloc, /* special_function */
1339 "R_PPC_EMB_SDA2I16", /* name */
1340 FALSE, /* partial_inplace */
1341 0, /* src_mask */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1344
1345 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1346 small data items. */
1347 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1348 0, /* rightshift */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 16, /* bitsize */
1351 FALSE, /* pc_relative */
1352 0, /* bitpos */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 bfd_elf_generic_reloc, /* special_function */
1355 "R_PPC_EMB_SDA2REL", /* name */
1356 FALSE, /* partial_inplace */
1357 0, /* src_mask */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1362 signed offset from the appropriate base, and filling in the register
1363 field with the appropriate register (0, 2, or 13). */
1364 HOWTO (R_PPC_EMB_SDA21, /* type */
1365 0, /* rightshift */
1366 2, /* size (0 = byte, 1 = short, 2 = long) */
1367 16, /* bitsize */
1368 FALSE, /* pc_relative */
1369 0, /* bitpos */
1370 complain_overflow_signed, /* complain_on_overflow */
1371 bfd_elf_generic_reloc, /* special_function */
1372 "R_PPC_EMB_SDA21", /* name */
1373 FALSE, /* partial_inplace */
1374 0, /* src_mask */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1377
1378 /* Relocation not handled: R_PPC_EMB_MRKREF */
1379 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1380 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1382 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1383 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1384
1385 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1386 in the 16 bit signed offset from the appropriate base, and filling in the
1387 register field with the appropriate register (0, 2, or 13). */
1388 HOWTO (R_PPC_EMB_RELSDA, /* type */
1389 0, /* rightshift */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1391 16, /* bitsize */
ddfd6795 1392 FALSE, /* pc_relative */
25dbc73a
AM
1393 0, /* bitpos */
1394 complain_overflow_signed, /* complain_on_overflow */
1395 bfd_elf_generic_reloc, /* special_function */
1396 "R_PPC_EMB_RELSDA", /* name */
1397 FALSE, /* partial_inplace */
1398 0, /* src_mask */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1401
b9c361e0
JL
1402 /* A relative 8 bit branch. */
1403 HOWTO (R_PPC_VLE_REL8, /* type */
1404 1, /* rightshift */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1406 8, /* bitsize */
1407 TRUE, /* pc_relative */
1408 0, /* bitpos */
1409 complain_overflow_signed, /* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 "R_PPC_VLE_REL8", /* name */
1412 FALSE, /* partial_inplace */
1413 0, /* src_mask */
1414 0xff, /* dst_mask */
1415 TRUE), /* pcrel_offset */
68ffbac6 1416
b9c361e0
JL
1417 /* A relative 15 bit branch. */
1418 HOWTO (R_PPC_VLE_REL15, /* type */
1419 1, /* rightshift */
1420 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 15, /* bitsize */
1422 TRUE, /* pc_relative */
1423 1, /* bitpos */
1424 complain_overflow_signed, /* complain_on_overflow */
1425 bfd_elf_generic_reloc, /* special_function */
1426 "R_PPC_VLE_REL15", /* name */
1427 FALSE, /* partial_inplace */
1428 0, /* src_mask */
1429 0xfe, /* dst_mask */
1430 TRUE), /* pcrel_offset */
1431
68ffbac6 1432 /* A relative 24 bit branch. */
b9c361e0
JL
1433 HOWTO (R_PPC_VLE_REL24, /* type */
1434 1, /* rightshift */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 24, /* bitsize */
1437 TRUE, /* pc_relative */
1438 1, /* bitpos */
1439 complain_overflow_signed, /* complain_on_overflow */
1440 bfd_elf_generic_reloc, /* special_function */
1441 "R_PPC_VLE_REL24", /* name */
1442 FALSE, /* partial_inplace */
1443 0, /* src_mask */
1444 0x1fffffe, /* dst_mask */
1445 TRUE), /* pcrel_offset */
1446
1447 /* The 16 LSBS in split16a format. */
1448 HOWTO (R_PPC_VLE_LO16A, /* type */
1449 0, /* rightshift */
1450 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1451 16, /* bitsize */
bdaacd3a 1452 FALSE, /* pc_relative */
b9c361e0 1453 0, /* bitpos */
86c95733 1454 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1455 bfd_elf_generic_reloc, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE, /* partial_inplace */
1458 0, /* src_mask */
bdaacd3a 1459 0x1f007ff, /* dst_mask */
b9c361e0
JL
1460 FALSE), /* pcrel_offset */
1461
1462 /* The 16 LSBS in split16d format. */
1463 HOWTO (R_PPC_VLE_LO16D, /* type */
1464 0, /* rightshift */
1465 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1466 16, /* bitsize */
b9c361e0
JL
1467 FALSE, /* pc_relative */
1468 0, /* bitpos */
86c95733 1469 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1470 bfd_elf_generic_reloc, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE, /* partial_inplace */
1473 0, /* src_mask */
1474 0x1f07ff, /* dst_mask */
1475 FALSE), /* pcrel_offset */
1476
1477 /* Bits 16-31 split16a format. */
1478 HOWTO (R_PPC_VLE_HI16A, /* type */
86c95733 1479 16, /* rightshift */
b9c361e0 1480 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1481 16, /* bitsize */
b9c361e0
JL
1482 FALSE, /* pc_relative */
1483 0, /* bitpos */
86c95733 1484 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1485 bfd_elf_generic_reloc, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE, /* partial_inplace */
1488 0, /* src_mask */
bdaacd3a 1489 0x1f007ff, /* dst_mask */
b9c361e0
JL
1490 FALSE), /* pcrel_offset */
1491
1492 /* Bits 16-31 split16d format. */
1493 HOWTO (R_PPC_VLE_HI16D, /* type */
86c95733 1494 16, /* rightshift */
b9c361e0 1495 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1496 16, /* bitsize */
b9c361e0
JL
1497 FALSE, /* pc_relative */
1498 0, /* bitpos */
86c95733 1499 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1500 bfd_elf_generic_reloc, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE, /* partial_inplace */
1503 0, /* src_mask */
1504 0x1f07ff, /* dst_mask */
1505 FALSE), /* pcrel_offset */
1506
1507 /* Bits 16-31 (High Adjusted) in split16a format. */
1508 HOWTO (R_PPC_VLE_HA16A, /* type */
86c95733 1509 16, /* rightshift */
b9c361e0 1510 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1511 16, /* bitsize */
b9c361e0
JL
1512 FALSE, /* pc_relative */
1513 0, /* bitpos */
86c95733 1514 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1515 bfd_elf_generic_reloc, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE, /* partial_inplace */
1518 0, /* src_mask */
bdaacd3a 1519 0x1f007ff, /* dst_mask */
b9c361e0
JL
1520 FALSE), /* pcrel_offset */
1521
1522 /* Bits 16-31 (High Adjusted) in split16d format. */
1523 HOWTO (R_PPC_VLE_HA16D, /* type */
86c95733 1524 16, /* rightshift */
b9c361e0 1525 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1526 16, /* bitsize */
b9c361e0
JL
1527 FALSE, /* pc_relative */
1528 0, /* bitpos */
86c95733 1529 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1530 bfd_elf_generic_reloc, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE, /* partial_inplace */
1533 0, /* src_mask */
1534 0x1f07ff, /* dst_mask */
1535 FALSE), /* pcrel_offset */
1536
86c95733
AM
1537 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1538 instructions. If the register base is 0 then the linker changes
1539 the e_add16i to an e_li instruction. */
1540 HOWTO (R_PPC_VLE_SDA21, /* type */
b9c361e0
JL
1541 0, /* rightshift */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1543 16, /* bitsize */
b9c361e0
JL
1544 FALSE, /* pc_relative */
1545 0, /* bitpos */
86c95733 1546 complain_overflow_signed, /* complain_on_overflow */
b9c361e0
JL
1547 bfd_elf_generic_reloc, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
1549 FALSE, /* partial_inplace */
1550 0, /* src_mask */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1553
86c95733 1554 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
b9c361e0
JL
1555 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1556 0, /* rightshift */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1558 16, /* bitsize */
b9c361e0
JL
1559 FALSE, /* pc_relative */
1560 0, /* bitpos */
86c95733 1561 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1562 bfd_elf_generic_reloc, /* special_function */
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE, /* partial_inplace */
1565 0, /* src_mask */
86c95733 1566 0xffff, /* dst_mask */
b9c361e0
JL
1567 FALSE), /* pcrel_offset */
1568
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1571 0, /* rightshift */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1573 16, /* bitsize */
b9c361e0
JL
1574 FALSE, /* pc_relative */
1575 0, /* bitpos */
86c95733 1576 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1577 bfd_elf_generic_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1580 0, /* src_mask */
bdaacd3a 1581 0x1f007ff, /* dst_mask */
b9c361e0
JL
1582 FALSE), /* pcrel_offset */
1583
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
b9c361e0
JL
1585 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1586 0, /* rightshift */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1588 16, /* bitsize */
b9c361e0
JL
1589 FALSE, /* pc_relative */
1590 0, /* bitpos */
86c95733 1591 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1592 bfd_elf_generic_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE, /* partial_inplace */
1595 0, /* src_mask */
1596 0x1f07ff, /* dst_mask */
1597 FALSE), /* pcrel_offset */
1598
1599 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1600 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
86c95733 1601 16, /* rightshift */
b9c361e0 1602 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1603 16, /* bitsize */
b9c361e0
JL
1604 FALSE, /* pc_relative */
1605 0, /* bitpos */
86c95733 1606 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1607 bfd_elf_generic_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE, /* partial_inplace */
1610 0, /* src_mask */
bdaacd3a 1611 0x1f007ff, /* dst_mask */
b9c361e0
JL
1612 FALSE), /* pcrel_offset */
1613
1614 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1615 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
86c95733 1616 16, /* rightshift */
b9c361e0 1617 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1618 16, /* bitsize */
b9c361e0
JL
1619 FALSE, /* pc_relative */
1620 0, /* bitpos */
86c95733 1621 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1622 bfd_elf_generic_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE, /* partial_inplace */
1625 0, /* src_mask */
1626 0x1f07ff, /* dst_mask */
1627 FALSE), /* pcrel_offset */
1628
1629 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1630 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
86c95733 1631 16, /* rightshift */
b9c361e0 1632 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1633 16, /* bitsize */
b9c361e0
JL
1634 FALSE, /* pc_relative */
1635 0, /* bitpos */
86c95733 1636 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1637 bfd_elf_generic_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE, /* partial_inplace */
1640 0, /* src_mask */
bdaacd3a 1641 0x1f007ff, /* dst_mask */
b9c361e0
JL
1642 FALSE), /* pcrel_offset */
1643
1644 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1645 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
86c95733 1646 16, /* rightshift */
b9c361e0 1647 2, /* size (0 = byte, 1 = short, 2 = long) */
86c95733 1648 16, /* bitsize */
b9c361e0
JL
1649 FALSE, /* pc_relative */
1650 0, /* bitpos */
86c95733 1651 complain_overflow_dont, /* complain_on_overflow */
b9c361e0
JL
1652 bfd_elf_generic_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE, /* partial_inplace */
1655 0, /* src_mask */
1656 0x1f07ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1658
e054468f
AM
1659 HOWTO (R_PPC_IRELATIVE, /* type */
1660 0, /* rightshift */
1661 2, /* size (0 = byte, 1 = short, 2 = long) */
1662 32, /* bitsize */
1663 FALSE, /* pc_relative */
1664 0, /* bitpos */
86c95733 1665 complain_overflow_dont, /* complain_on_overflow */
e054468f
AM
1666 bfd_elf_generic_reloc, /* special_function */
1667 "R_PPC_IRELATIVE", /* name */
1668 FALSE, /* partial_inplace */
1669 0, /* src_mask */
1670 0xffffffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1672
d7128ce4
AM
1673 /* A 16 bit relative relocation. */
1674 HOWTO (R_PPC_REL16, /* type */
1675 0, /* rightshift */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1677 16, /* bitsize */
1678 TRUE, /* pc_relative */
1679 0, /* bitpos */
86c95733 1680 complain_overflow_signed, /* complain_on_overflow */
d7128ce4
AM
1681 bfd_elf_generic_reloc, /* special_function */
1682 "R_PPC_REL16", /* name */
1683 FALSE, /* partial_inplace */
1684 0, /* src_mask */
1685 0xffff, /* dst_mask */
1686 TRUE), /* pcrel_offset */
1687
1688 /* A 16 bit relative relocation without overflow. */
1689 HOWTO (R_PPC_REL16_LO, /* type */
1690 0, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 16, /* bitsize */
1693 TRUE, /* pc_relative */
1694 0, /* bitpos */
1695 complain_overflow_dont,/* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16_LO", /* name */
1698 FALSE, /* partial_inplace */
1699 0, /* src_mask */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1702
1703 /* The high order 16 bits of a relative address. */
1704 HOWTO (R_PPC_REL16_HI, /* type */
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 16, /* bitsize */
1708 TRUE, /* pc_relative */
1709 0, /* bitpos */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_PPC_REL16_HI", /* name */
1713 FALSE, /* partial_inplace */
1714 0, /* src_mask */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1717
1718 /* The high order 16 bits of a relative address, plus 1 if the contents of
1719 the low 16 bits, treated as a signed number, is negative. */
1720 HOWTO (R_PPC_REL16_HA, /* type */
1721 16, /* rightshift */
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 16, /* bitsize */
1724 TRUE, /* pc_relative */
1725 0, /* bitpos */
1726 complain_overflow_dont, /* complain_on_overflow */
1727 ppc_elf_addr16_ha_reloc, /* special_function */
1728 "R_PPC_REL16_HA", /* name */
1729 FALSE, /* partial_inplace */
1730 0, /* src_mask */
1731 0xffff, /* dst_mask */
1732 TRUE), /* pcrel_offset */
1733
25dbc73a
AM
1734 /* GNU extension to record C++ vtable hierarchy. */
1735 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1736 0, /* rightshift */
1737 0, /* size (0 = byte, 1 = short, 2 = long) */
1738 0, /* bitsize */
1739 FALSE, /* pc_relative */
1740 0, /* bitpos */
1741 complain_overflow_dont, /* complain_on_overflow */
1742 NULL, /* special_function */
1743 "R_PPC_GNU_VTINHERIT", /* name */
1744 FALSE, /* partial_inplace */
1745 0, /* src_mask */
1746 0, /* dst_mask */
1747 FALSE), /* pcrel_offset */
1748
1749 /* GNU extension to record C++ vtable member usage. */
1750 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1751 0, /* rightshift */
1752 0, /* size (0 = byte, 1 = short, 2 = long) */
1753 0, /* bitsize */
1754 FALSE, /* pc_relative */
1755 0, /* bitpos */
1756 complain_overflow_dont, /* complain_on_overflow */
1757 NULL, /* special_function */
1758 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM
1759 FALSE, /* partial_inplace */
1760 0, /* src_mask */
25dbc73a 1761 0, /* dst_mask */
7619e7c7
AM
1762 FALSE), /* pcrel_offset */
1763
25dbc73a
AM
1764 /* Phony reloc to handle AIX style TOC entries. */
1765 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM
1766 0, /* rightshift */
1767 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 16, /* bitsize */
1769 FALSE, /* pc_relative */
1770 0, /* bitpos */
25dbc73a 1771 complain_overflow_signed, /* complain_on_overflow */
7619e7c7 1772 bfd_elf_generic_reloc, /* special_function */
25dbc73a 1773 "R_PPC_TOC16", /* name */
7619e7c7
AM
1774 FALSE, /* partial_inplace */
1775 0, /* src_mask */
1776 0xffff, /* dst_mask */
1777 FALSE), /* pcrel_offset */
25dbc73a 1778};
70a38d42
SDJ
1779
1780/* External 32-bit PPC structure for PRPSINFO. This structure is
1781 ABI-defined, thus we choose to use char arrays here in order to
1782 avoid dealing with different types in different architectures.
1783
1784 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1785 most non-PPC architectures use `short int'.
1786
1787 This structure will ultimately be written in the corefile's note
1788 section, as the PRPSINFO. */
1789
1790struct elf_external_ppc_linux_prpsinfo32
1791 {
1792 char pr_state; /* Numeric process state. */
1793 char pr_sname; /* Char for pr_state. */
1794 char pr_zomb; /* Zombie. */
1795 char pr_nice; /* Nice val. */
1796 char pr_flag[4]; /* Flags. */
1797 char pr_uid[4];
1798 char pr_gid[4];
1799 char pr_pid[4];
1800 char pr_ppid[4];
1801 char pr_pgrp[4];
1802 char pr_sid[4];
1803 char pr_fname[16]; /* Filename of executable. */
1804 char pr_psargs[80]; /* Initial part of arg list. */
1805 };
1806
1807/* Helper macro to swap (properly handling endianess) things from the
1808 `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32'
1809 structure.
1810
1811 Note that FROM should be a pointer, and TO should be the explicit type. */
1812
1813#define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \
1814 do \
1815 { \
1816 H_PUT_8 (abfd, from->pr_state, &to.pr_state); \
1817 H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \
1818 H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \
1819 H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \
1820 H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \
1821 H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \
1822 H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \
1823 H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \
1824 H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \
1825 H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \
1826 H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \
1827 strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \
1828 strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \
1829 } while (0)
1830
25dbc73a
AM
1831\f
1832/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1833
1834static void
1835ppc_elf_howto_init (void)
1836{
1837 unsigned int i, type;
1838
1839 for (i = 0;
1840 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1841 i++)
1842 {
1843 type = ppc_elf_howto_raw[i].type;
1844 if (type >= (sizeof (ppc_elf_howto_table)
1845 / sizeof (ppc_elf_howto_table[0])))
1846 abort ();
1847 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1848 }
1849}
1850
1851static reloc_howto_type *
1852ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1853 bfd_reloc_code_real_type code)
1854{
1855 enum elf_ppc_reloc_type r;
1856
1857 /* Initialize howto table if not already done. */
1858 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1859 ppc_elf_howto_init ();
1860
1861 switch (code)
1862 {
1863 default:
1864 return NULL;
1865
1866 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1867 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1868 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1fe532cf 1869 case BFD_RELOC_PPC64_ADDR16_DS:
25dbc73a 1870 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1fe532cf 1871 case BFD_RELOC_PPC64_ADDR16_LO_DS:
25dbc73a
AM
1872 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1873 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1874 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1875 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1876 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1877 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1878 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1879 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1880 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1881 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1fe532cf 1882 case BFD_RELOC_PPC64_GOT16_DS:
25dbc73a 1883 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1fe532cf 1884 case BFD_RELOC_PPC64_GOT16_LO_DS:
25dbc73a
AM
1885 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1886 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1887 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1888 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1889 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1890 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1891 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1892 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1893 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1894 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1fe532cf 1895 case BFD_RELOC_PPC64_PLT16_LO_DS:
25dbc73a
AM
1896 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1897 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1898 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1899 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1fe532cf 1900 case BFD_RELOC_PPC64_SECTOFF_DS:
25dbc73a 1901 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1fe532cf 1902 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
25dbc73a
AM
1903 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1904 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1905 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1906 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1fe532cf 1907 case BFD_RELOC_PPC64_TOC16_DS:
25dbc73a
AM
1908 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1909 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
727fc41e
AM
1910 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1911 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
25dbc73a 1912 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1fe532cf 1913 case BFD_RELOC_PPC64_TPREL16_DS:
25dbc73a 1914 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1fe532cf 1915 case BFD_RELOC_PPC64_TPREL16_LO_DS:
25dbc73a
AM
1916 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1917 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1918 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1919 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1fe532cf 1920 case BFD_RELOC_PPC64_DTPREL16_DS:
25dbc73a 1921 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1fe532cf 1922 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
25dbc73a
AM
1923 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1924 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1925 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1926 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1929 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1930 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1933 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1934 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1937 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1938 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1941 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1942 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1943 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1946 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1947 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1948 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1949 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1950 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1951 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1952 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1953 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1954 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1955 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1956 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1957 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1958 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
b9c361e0
JL
1959 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1960 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1961 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1962 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1963 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1964 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1965 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1966 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1967 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1968 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1969 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1970 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1971 r = R_PPC_VLE_SDAREL_LO16A;
1972 break;
1973 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1974 r = R_PPC_VLE_SDAREL_LO16D;
1975 break;
1976 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1977 r = R_PPC_VLE_SDAREL_HI16A;
1978 break;
1979 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1980 r = R_PPC_VLE_SDAREL_HI16D;
1981 break;
1982 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1983 r = R_PPC_VLE_SDAREL_HA16A;
1984 break;
1985 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1986 r = R_PPC_VLE_SDAREL_HA16D;
1987 break;
d7128ce4
AM
1988 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1989 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1990 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1991 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
25dbc73a
AM
1992 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1993 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1994 }
1995
1996 return ppc_elf_howto_table[r];
1997};
1998
157090f7
AM
1999static reloc_howto_type *
2000ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2001 const char *r_name)
2002{
2003 unsigned int i;
2004
2005 for (i = 0;
2006 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2007 i++)
2008 if (ppc_elf_howto_raw[i].name != NULL
2009 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2010 return &ppc_elf_howto_raw[i];
2011
2012 return NULL;
2013}
2014
25dbc73a
AM
2015/* Set the howto pointer for a PowerPC ELF reloc. */
2016
2017static void
2018ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2019 arelent *cache_ptr,
2020 Elf_Internal_Rela *dst)
2021{
cd21f5da
NC
2022 unsigned int r_type;
2023
25dbc73a
AM
2024 /* Initialize howto table if not already done. */
2025 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2026 ppc_elf_howto_init ();
2027
cd21f5da
NC
2028 r_type = ELF32_R_TYPE (dst->r_info);
2029 if (r_type >= R_PPC_max)
2030 {
64d29018 2031 (*_bfd_error_handler) (_("%B: unrecognised PPC reloc number: %d"),
cd21f5da
NC
2032 abfd, r_type);
2033 bfd_set_error (bfd_error_bad_value);
2034 r_type = R_PPC_NONE;
2035 }
2036 cache_ptr->howto = ppc_elf_howto_table[r_type];
375de94a
AM
2037
2038 /* Just because the above assert didn't trigger doesn't mean that
2039 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2040 if (!cache_ptr->howto)
2041 {
2042 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
cd21f5da 2043 abfd, r_type);
375de94a
AM
2044 bfd_set_error (bfd_error_bad_value);
2045
2046 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2047 }
25dbc73a
AM
2048}
2049
d7128ce4 2050/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM
2051
2052static bfd_reloc_status_type
2053ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2054 arelent *reloc_entry,
2055 asymbol *symbol,
2056 void *data ATTRIBUTE_UNUSED,
2057 asection *input_section,
2058 bfd *output_bfd,
2059 char **error_message ATTRIBUTE_UNUSED)
2060{
2061 bfd_vma relocation;
2062
2063 if (output_bfd != NULL)
2064 {
2065 reloc_entry->address += input_section->output_offset;
2066 return bfd_reloc_ok;
2067 }
2068
25dbc73a
AM
2069 if (bfd_is_com_section (symbol->section))
2070 relocation = 0;
2071 else
2072 relocation = symbol->value;
2073
2074 relocation += symbol->section->output_section->vma;
2075 relocation += symbol->section->output_offset;
2076 relocation += reloc_entry->addend;
d7128ce4
AM
2077 if (reloc_entry->howto->pc_relative)
2078 relocation -= reloc_entry->address;
25dbc73a
AM
2079
2080 reloc_entry->addend += (relocation & 0x8000) << 1;
2081
2082 return bfd_reloc_continue;
2083}
2084
2085static bfd_reloc_status_type
2086ppc_elf_unhandled_reloc (bfd *abfd,
2087 arelent *reloc_entry,
2088 asymbol *symbol,
2089 void *data,
2090 asection *input_section,
2091 bfd *output_bfd,
2092 char **error_message)
2093{
2094 /* If this is a relocatable link (output_bfd test tells us), just
2095 call the generic function. Any adjustment will be done at final
2096 link time. */
2097 if (output_bfd != NULL)
2098 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2099 input_section, output_bfd, error_message);
2100
2101 if (error_message != NULL)
2102 {
2103 static char buf[60];
2104 sprintf (buf, _("generic linker can't handle %s"),
2105 reloc_entry->howto->name);
2106 *error_message = buf;
2107 }
2108 return bfd_reloc_dangerous;
2109}
2110\f
2111/* Sections created by the linker. */
2112
2113typedef struct elf_linker_section
2114{
c9a2f333 2115 /* Pointer to the bfd section. */
25dbc73a 2116 asection *section;
c9a2f333
AM
2117 /* Section name. */
2118 const char *name;
2119 /* Associated bss section name. */
2120 const char *bss_name;
2121 /* Associated symbol name. */
2122 const char *sym_name;
046183de
AM
2123 /* Associated symbol. */
2124 struct elf_link_hash_entry *sym;
25dbc73a
AM
2125} elf_linker_section_t;
2126
2127/* Linked list of allocated pointer entries. This hangs off of the
2128 symbol lists, and provides allows us to return different pointers,
2129 based on different addend's. */
2130
2131typedef struct elf_linker_section_pointers
2132{
2133 /* next allocated pointer for this symbol */
2134 struct elf_linker_section_pointers *next;
2135 /* offset of pointer from beginning of section */
2136 bfd_vma offset;
2137 /* addend used */
2138 bfd_vma addend;
2139 /* which linker section this is */
2140 elf_linker_section_t *lsect;
25dbc73a
AM
2141} elf_linker_section_pointers_t;
2142
2143struct ppc_elf_obj_tdata
2144{
2145 struct elf_obj_tdata elf;
2146
2147 /* A mapping from local symbols to offsets into the various linker
2148 sections added. This is index by the symbol index. */
2149 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM
2150
2151 /* Flags used to auto-detect plt type. */
2152 unsigned int makes_plt_call : 1;
2153 unsigned int has_rel16 : 1;
25dbc73a
AM
2154};
2155
2156#define ppc_elf_tdata(bfd) \
2157 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 2158
25dbc73a
AM
2159#define elf_local_ptr_offsets(bfd) \
2160 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 2161
0c8d6e5c
AM
2162#define is_ppc_elf(bfd) \
2163 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2164 && elf_object_id (bfd) == PPC32_ELF_DATA)
0c8d6e5c 2165
25dbc73a 2166/* Override the generic function because we store some extras. */
7619e7c7 2167
25dbc73a
AM
2168static bfd_boolean
2169ppc_elf_mkobject (bfd *abfd)
2170{
0ffa91dd 2171 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
4dfe6ac6 2172 PPC32_ELF_DATA);
25dbc73a 2173}
7619e7c7 2174
25dbc73a
AM
2175/* Fix bad default arch selected for a 32 bit input bfd when the
2176 default is 64 bit. */
7619e7c7 2177
25dbc73a
AM
2178static bfd_boolean
2179ppc_elf_object_p (bfd *abfd)
2180{
2181 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2182 {
2183 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 2184
25dbc73a
AM
2185 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2186 {
2187 /* Relies on arch after 64 bit default being 32 bit default. */
2188 abfd->arch_info = abfd->arch_info->next;
2189 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2190 }
2191 }
2192 return TRUE;
2193}
7619e7c7 2194
25dbc73a 2195/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 2196
25dbc73a
AM
2197static bfd_boolean
2198ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2199{
2200 BFD_ASSERT (!elf_flags_init (abfd)
2201 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 2202
25dbc73a
AM
2203 elf_elfheader (abfd)->e_flags = flags;
2204 elf_flags_init (abfd) = TRUE;
2205 return TRUE;
2206}
2207
25dbc73a 2208/* Support for core dump NOTE sections. */
deaaf2f3 2209
b34976b6 2210static bfd_boolean
25dbc73a 2211ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 2212{
25dbc73a
AM
2213 int offset;
2214 unsigned int size;
252b5132 2215
25dbc73a
AM
2216 switch (note->descsz)
2217 {
2218 default:
2219 return FALSE;
252b5132 2220
25dbc73a
AM
2221 case 268: /* Linux/PPC. */
2222 /* pr_cursig */
228e534f 2223 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 2224
25dbc73a 2225 /* pr_pid */
228e534f 2226 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 2227
25dbc73a
AM
2228 /* pr_reg */
2229 offset = 72;
2230 size = 192;
deaaf2f3 2231
25dbc73a
AM
2232 break;
2233 }
deaaf2f3 2234
25dbc73a
AM
2235 /* Make a ".reg/999" section. */
2236 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2237 size, note->descpos + offset);
2238}
252b5132 2239
25dbc73a
AM
2240static bfd_boolean
2241ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2242{
2243 switch (note->descsz)
deaaf2f3 2244 {
25dbc73a
AM
2245 default:
2246 return FALSE;
deaaf2f3 2247
25dbc73a 2248 case 128: /* Linux/PPC elf_prpsinfo. */
228e534f 2249 elf_tdata (abfd)->core->pid
bc989cdc 2250 = bfd_get_32 (abfd, note->descdata + 16);
228e534f 2251 elf_tdata (abfd)->core->program
25dbc73a 2252 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
228e534f 2253 elf_tdata (abfd)->core->command
25dbc73a
AM
2254 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2255 }
9abc968f 2256
25dbc73a
AM
2257 /* Note that for some reason, a spurious space is tacked
2258 onto the end of the args in some (at least one anyway)
2259 implementations, so strip it off if it exists. */
70bccea4 2260
25dbc73a 2261 {
228e534f 2262 char *command = elf_tdata (abfd)->core->command;
25dbc73a 2263 int n = strlen (command);
70bccea4 2264
25dbc73a
AM
2265 if (0 < n && command[n - 1] == ' ')
2266 command[n - 1] = '\0';
2267 }
deaaf2f3 2268
25dbc73a
AM
2269 return TRUE;
2270}
deaaf2f3 2271
70a38d42
SDJ
2272char *
2273elfcore_write_ppc_linux_prpsinfo32 (bfd *abfd, char *buf, int *bufsiz,
2274 const struct elf_internal_linux_prpsinfo *prpsinfo)
2275{
2276 struct elf_external_ppc_linux_prpsinfo32 data;
2277
2278 memset (&data, 0, sizeof (data));
2279 PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd, prpsinfo, data);
2280
2281 return elfcore_write_note (abfd, buf, bufsiz,
2282 "CORE", NT_PRPSINFO, &data, sizeof (data));
2283}
2284
183e98be
AM
2285static char *
2286ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2287{
2288 switch (note_type)
2289 {
2290 default:
2291 return NULL;
2292
2293 case NT_PRPSINFO:
2294 {
2295 char data[128];
2296 va_list ap;
2297
2298 va_start (ap, note_type);
75cd47ed 2299 memset (data, 0, sizeof (data));
183e98be
AM
2300 strncpy (data + 32, va_arg (ap, const char *), 16);
2301 strncpy (data + 48, va_arg (ap, const char *), 80);
2302 va_end (ap);
2303 return elfcore_write_note (abfd, buf, bufsiz,
2304 "CORE", note_type, data, sizeof (data));
2305 }
2306
2307 case NT_PRSTATUS:
2308 {
2309 char data[268];
2310 va_list ap;
2311 long pid;
2312 int cursig;
2313 const void *greg;
2314
2315 va_start (ap, note_type);
2316 memset (data, 0, 72);
2317 pid = va_arg (ap, long);
2318 bfd_put_32 (abfd, pid, data + 24);
2319 cursig = va_arg (ap, int);
2320 bfd_put_16 (abfd, cursig, data + 12);
2321 greg = va_arg (ap, const void *);
2322 memcpy (data + 72, greg, 192);
2323 memset (data + 264, 0, 4);
2324 va_end (ap);
2325 return elfcore_write_note (abfd, buf, bufsiz,
2326 "CORE", note_type, data, sizeof (data));
2327 }
2328 }
2329}
2330
b9c361e0 2331static flagword
68ffbac6 2332ppc_elf_lookup_section_flags (char *flag_name)
b9c361e0
JL
2333{
2334
2335 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2336 return SHF_PPC_VLE;
2337
2338 return 0;
2339}
2340
2341/* Add the VLE flag if required. */
2342
2343bfd_boolean
2344ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2345{
2346 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2347 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2348 shdr->sh_flags |= SHF_PPC_VLE;
2349
2350 return TRUE;
2351}
2352
25dbc73a
AM
2353/* Return address for Ith PLT stub in section PLT, for relocation REL
2354 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 2355
25dbc73a
AM
2356static bfd_vma
2357ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2358 const asection *plt ATTRIBUTE_UNUSED,
2359 const arelent *rel)
2360{
2361 return rel->address;
2362}
deaaf2f3 2363
25dbc73a 2364/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
2365 is called when bfd_section_from_shdr finds a section with an unknown
2366 type. */
deaaf2f3 2367
25dbc73a 2368static bfd_boolean
6dc132d9
L
2369ppc_elf_section_from_shdr (bfd *abfd,
2370 Elf_Internal_Shdr *hdr,
2371 const char *name,
2372 int shindex)
25dbc73a
AM
2373{
2374 asection *newsect;
2375 flagword flags;
d1c6de6f 2376
6dc132d9 2377 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 2378 return FALSE;
deaaf2f3 2379
25dbc73a
AM
2380 newsect = hdr->bfd_section;
2381 flags = bfd_get_section_flags (abfd, newsect);
2382 if (hdr->sh_flags & SHF_EXCLUDE)
2383 flags |= SEC_EXCLUDE;
9abc968f 2384
25dbc73a
AM
2385 if (hdr->sh_type == SHT_ORDERED)
2386 flags |= SEC_SORT_ENTRIES;
d1c6de6f 2387
25dbc73a
AM
2388 bfd_set_section_flags (abfd, newsect, flags);
2389 return TRUE;
2390}
2391
2392/* Set up any other section flags and such that may be necessary. */
2393
2394static bfd_boolean
2395ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2396 Elf_Internal_Shdr *shdr,
2397 asection *asect)
2398{
25dbc73a
AM
2399 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2400 shdr->sh_type = SHT_ORDERED;
2401
2402 return TRUE;
2403}
2404
2405/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2406 need to bump up the number of section headers. */
2407
2408static int
a6b96beb
AM
2409ppc_elf_additional_program_headers (bfd *abfd,
2410 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM
2411{
2412 asection *s;
2413 int ret = 0;
d1c6de6f 2414
25dbc73a
AM
2415 s = bfd_get_section_by_name (abfd, ".sbss2");
2416 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2417 ++ret;
d1c6de6f 2418
25dbc73a
AM
2419 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2420 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2421 ++ret;
deaaf2f3 2422
25dbc73a
AM
2423 return ret;
2424}
deaaf2f3 2425
68ffbac6 2426/* Modify the segment map for VLE executables. */
b9c361e0
JL
2427
2428bfd_boolean
2429ppc_elf_modify_segment_map (bfd *abfd,
2430 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2431{
2432 struct elf_segment_map *m, *n;
2433 bfd_size_type amt;
2434 unsigned int j, k;
2435 bfd_boolean sect0_vle, sectj_vle;
2436
2437 /* At this point in the link, output sections have already been sorted by
2438 LMA and assigned to segments. All that is left to do is to ensure
2439 there is no mixing of VLE & non-VLE sections in a text segment.
2440 If we find that case, we split the segment.
2441 We maintain the original output section order. */
2442
12bd6957 2443 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
b9c361e0
JL
2444 {
2445 if (m->count == 0)
2446 continue;
2447
94caa966 2448 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
b9c361e0
JL
2449 for (j = 1; j < m->count; ++j)
2450 {
94caa966
AM
2451 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2452
2453 if (sectj_vle != sect0_vle)
b9c361e0
JL
2454 break;
2455 }
2456 if (j >= m->count)
2457 continue;
2458
b9c361e0
JL
2459 /* sections 0..j-1 stay in this (current) segment,
2460 the remainder are put in a new segment.
2461 The scan resumes with the new segment. */
2462
2463 /* Fix the new segment. */
2464 amt = sizeof (struct elf_segment_map);
2465 amt += (m->count - j - 1) * sizeof (asection *);
2466 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2467 if (n == NULL)
2468 return FALSE;
2469
2470 n->p_type = PT_LOAD;
2471 n->p_flags = PF_X | PF_R;
2472 if (sectj_vle)
2473 n->p_flags |= PF_PPC_VLE;
2474 n->count = m->count - j;
2475 for (k = 0; k < n->count; ++k)
2476 {
2477 n->sections[k] = m->sections[j+k];
2478 m->sections[j+k] = NULL;
2479 }
2480 n->next = m->next;
2481 m->next = n;
2482
2483 /* Fix the current segment */
2484 m->count = j;
2485 }
2486
2487 return TRUE;
2488}
2489
25dbc73a
AM
2490/* Add extra PPC sections -- Note, for now, make .sbss2 and
2491 .PPC.EMB.sbss0 a normal section, and not a bss section so
2492 that the linker doesn't crater when trying to make more than
2493 2 sections. */
e656e369 2494
b35d266b 2495static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 2496{
0112cd26
NC
2497 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2498 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2499 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2500 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2501 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2502 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2503 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2504 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2505 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2506 { NULL, 0, 0, 0, 0 }
7f4d3958
L
2507};
2508
551b43fd
AM
2509/* This is what we want for new plt/got. */
2510static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 2511 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM
2512
2513static const struct bfd_elf_special_section *
2514ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 2515{
b35d266b 2516 const struct bfd_elf_special_section *ssect;
551b43fd
AM
2517
2518 /* See if this is one of the special sections. */
2519 if (sec->name == NULL)
2520 return NULL;
2521
2522 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2523 sec->use_rela_p);
2524 if (ssect != NULL)
2525 {
2526 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2527 ssect = &ppc_alt_plt;
2528 return ssect;
2529 }
2530
2531 return _bfd_elf_get_sec_type_attr (abfd, sec);
2532}
25dbc73a
AM
2533\f
2534/* Very simple linked list structure for recording apuinfo values. */
2535typedef struct apuinfo_list
2536{
2537 struct apuinfo_list *next;
2538 unsigned long value;
2539}
2540apuinfo_list;
e656e369 2541
25dbc73a 2542static apuinfo_list *head;
f2faa800 2543static bfd_boolean apuinfo_set;
deaaf2f3 2544
25dbc73a
AM
2545static void
2546apuinfo_list_init (void)
2547{
2548 head = NULL;
f2faa800 2549 apuinfo_set = FALSE;
25dbc73a 2550}
9abc968f 2551
25dbc73a
AM
2552static void
2553apuinfo_list_add (unsigned long value)
2554{
2555 apuinfo_list *entry = head;
deaaf2f3 2556
25dbc73a
AM
2557 while (entry != NULL)
2558 {
2559 if (entry->value == value)
2560 return;
2561 entry = entry->next;
2562 }
b4a38de6 2563
25dbc73a
AM
2564 entry = bfd_malloc (sizeof (* entry));
2565 if (entry == NULL)
2566 return;
e656e369 2567
25dbc73a
AM
2568 entry->value = value;
2569 entry->next = head;
2570 head = entry;
2571}
9abc968f 2572
25dbc73a
AM
2573static unsigned
2574apuinfo_list_length (void)
2575{
2576 apuinfo_list *entry;
2577 unsigned long count;
9abc968f 2578
25dbc73a
AM
2579 for (entry = head, count = 0;
2580 entry;
2581 entry = entry->next)
2582 ++ count;
e656e369 2583
25dbc73a
AM
2584 return count;
2585}
eea6121a 2586
25dbc73a
AM
2587static inline unsigned long
2588apuinfo_list_element (unsigned long number)
2589{
2590 apuinfo_list * entry;
e656e369 2591
25dbc73a
AM
2592 for (entry = head;
2593 entry && number --;
2594 entry = entry->next)
2595 ;
252b5132 2596
25dbc73a
AM
2597 return entry ? entry->value : 0;
2598}
2599
2600static void
2601apuinfo_list_finish (void)
2602{
2603 apuinfo_list *entry;
2604
2605 for (entry = head; entry;)
252b5132 2606 {
25dbc73a
AM
2607 apuinfo_list *next = entry->next;
2608 free (entry);
2609 entry = next;
2610 }
9abc968f 2611
25dbc73a
AM
2612 head = NULL;
2613}
9abc968f 2614
25dbc73a
AM
2615#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2616#define APUINFO_LABEL "APUinfo"
9abc968f 2617
25dbc73a
AM
2618/* Scan the input BFDs and create a linked list of
2619 the APUinfo values that will need to be emitted. */
9abc968f 2620
25dbc73a
AM
2621static void
2622ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2623{
2624 bfd *ibfd;
2625 asection *asec;
deddc40b
NS
2626 char *buffer = NULL;
2627 bfd_size_type largest_input_size = 0;
25dbc73a 2628 unsigned i;
25dbc73a
AM
2629 unsigned long length;
2630 const char *error_message = NULL;
9abc968f 2631
25dbc73a
AM
2632 if (link_info == NULL)
2633 return;
9abc968f 2634
25dbc73a 2635 apuinfo_list_init ();
252b5132 2636
25dbc73a 2637 /* Read in the input sections contents. */
c72f2fb2 2638 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
252b5132 2639 {
25dbc73a 2640 unsigned long datum;
252b5132 2641
25dbc73a
AM
2642 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2643 if (asec == NULL)
2644 continue;
252b5132 2645
deddc40b 2646 error_message = _("corrupt %s section in %B");
25dbc73a 2647 length = asec->size;
deddc40b
NS
2648 if (length < 20)
2649 goto fail;
2650
f2faa800 2651 apuinfo_set = TRUE;
deddc40b 2652 if (largest_input_size < asec->size)
25dbc73a 2653 {
deddc40b
NS
2654 if (buffer)
2655 free (buffer);
2656 largest_input_size = asec->size;
2657 buffer = bfd_malloc (largest_input_size);
2658 if (!buffer)
2659 return;
25dbc73a 2660 }
5b914448 2661
25dbc73a 2662 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
deddc40b 2663 || (bfd_bread (buffer, length, ibfd) != length))
25dbc73a
AM
2664 {
2665 error_message = _("unable to read in %s section from %B");
2666 goto fail;
2667 }
252b5132 2668
25dbc73a
AM
2669 /* Verify the contents of the header. Note - we have to
2670 extract the values this way in order to allow for a
2671 host whose endian-ness is different from the target. */
deddc40b 2672 datum = bfd_get_32 (ibfd, buffer);
25dbc73a
AM
2673 if (datum != sizeof APUINFO_LABEL)
2674 goto fail;
252b5132 2675
deddc40b 2676 datum = bfd_get_32 (ibfd, buffer + 8);
25dbc73a
AM
2677 if (datum != 0x2)
2678 goto fail;
252b5132 2679
deddc40b 2680 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
25dbc73a 2681 goto fail;
252b5132 2682
25dbc73a 2683 /* Get the number of bytes used for apuinfo entries. */
deddc40b 2684 datum = bfd_get_32 (ibfd, buffer + 4);
25dbc73a
AM
2685 if (datum + 20 != length)
2686 goto fail;
2687
25dbc73a
AM
2688 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2689 for (i = 0; i < datum; i += 4)
deddc40b 2690 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
252b5132
RH
2691 }
2692
25dbc73a 2693 error_message = NULL;
252b5132 2694
f2faa800 2695 if (apuinfo_set)
deddc40b 2696 {
f2faa800
NS
2697 /* Compute the size of the output section. */
2698 unsigned num_entries = apuinfo_list_length ();
5b914448 2699
deddc40b
NS
2700 /* Set the output section size, if it exists. */
2701 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
f2faa800 2702
deddc40b
NS
2703 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2704 {
2705 ibfd = abfd;
2706 error_message = _("warning: unable to set size of %s section in %B");
2707 }
2708 }
25dbc73a
AM
2709
2710 fail:
deddc40b
NS
2711 if (buffer)
2712 free (buffer);
25dbc73a
AM
2713
2714 if (error_message)
2715 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2716}
252b5132 2717
25dbc73a
AM
2718/* Prevent the output section from accumulating the input sections'
2719 contents. We have already stored this in our linked list structure. */
252b5132 2720
25dbc73a
AM
2721static bfd_boolean
2722ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2723 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM
2724 asection *asec,
2725 bfd_byte *contents ATTRIBUTE_UNUSED)
2726{
f2faa800 2727 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
252b5132
RH
2728}
2729
25dbc73a
AM
2730/* Finally we can generate the output section. */
2731
2732static void
2733ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2734{
25dbc73a
AM
2735 bfd_byte *buffer;
2736 asection *asec;
2737 unsigned i;
2738 unsigned num_entries;
2739 bfd_size_type length;
7619e7c7 2740
25dbc73a
AM
2741 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2742 if (asec == NULL)
2743 return;
2744
f2faa800 2745 if (!apuinfo_set)
25dbc73a
AM
2746 return;
2747
2748 length = asec->size;
2749 if (length < 20)
2750 return;
2751
2752 buffer = bfd_malloc (length);
2753 if (buffer == NULL)
7619e7c7 2754 {
25dbc73a
AM
2755 (*_bfd_error_handler)
2756 (_("failed to allocate space for new APUinfo section."));
2757 return;
7619e7c7 2758 }
7619e7c7 2759
25dbc73a
AM
2760 /* Create the apuinfo header. */
2761 num_entries = apuinfo_list_length ();
2762 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2763 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2764 bfd_put_32 (abfd, 0x2, buffer + 8);
2765 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2766
25dbc73a
AM
2767 length = 20;
2768 for (i = 0; i < num_entries; i++)
feee612b 2769 {
25dbc73a
AM
2770 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2771 length += 4;
feee612b 2772 }
feee612b 2773
25dbc73a
AM
2774 if (length != asec->size)
2775 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2776
25dbc73a
AM
2777 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2778 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2779
25dbc73a
AM
2780 free (buffer);
2781
2782 apuinfo_list_finish ();
252b5132 2783}
25dbc73a 2784\f
7382d32a 2785static bfd_boolean
c6dd29ce 2786is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
7382d32a 2787{
c6dd29ce 2788 bfd_byte buf[GLINK_ENTRY_SIZE];
7382d32a 2789
c6dd29ce 2790 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
7382d32a
AM
2791 return FALSE;
2792
c6dd29ce
AM
2793 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2794 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2795 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2796 && bfd_get_32 (abfd, buf + 12) == BCTR);
7382d32a
AM
2797}
2798
468392fb
AM
2799static bfd_boolean
2800section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2801{
2802 bfd_vma vma = *(bfd_vma *) ptr;
2803 return ((section->flags & SEC_ALLOC) != 0
2804 && section->vma <= vma
2805 && vma < section->vma + section->size);
2806}
2807
2808static long
2809ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2810 long dynsymcount, asymbol **dynsyms,
2811 asymbol **ret)
2812{
2813 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2814 asection *plt, *relplt, *dynamic, *glink;
2815 bfd_vma glink_vma = 0;
2816 bfd_vma resolv_vma = 0;
2817 bfd_vma stub_vma;
2818 asymbol *s;
2819 arelent *p;
2820 long count, i;
2821 size_t size;
2822 char *names;
2823 bfd_byte buf[4];
2824
2825 *ret = NULL;
2826
2827 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2828 return 0;
2829
2830 if (dynsymcount <= 0)
2831 return 0;
2832
2833 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2834 if (relplt == NULL)
2835 return 0;
2836
2837 plt = bfd_get_section_by_name (abfd, ".plt");
2838 if (plt == NULL)
2839 return 0;
2840
2841 /* Call common code to handle old-style executable PLTs. */
2842 if (elf_section_flags (plt) & SHF_EXECINSTR)
2843 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2844 dynsymcount, dynsyms, ret);
2845
2846 /* If this object was prelinked, the prelinker stored the address
2847 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2848 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2849 if (dynamic != NULL)
2850 {
2851 bfd_byte *dynbuf, *extdyn, *extdynend;
2852 size_t extdynsize;
2853 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2854
2855 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2856 return -1;
2857
2858 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2859 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2860
2861 extdyn = dynbuf;
2862 extdynend = extdyn + dynamic->size;
2863 for (; extdyn < extdynend; extdyn += extdynsize)
2864 {
2865 Elf_Internal_Dyn dyn;
2866 (*swap_dyn_in) (abfd, extdyn, &dyn);
2867
2868 if (dyn.d_tag == DT_NULL)
2869 break;
2870
2871 if (dyn.d_tag == DT_PPC_GOT)
2872 {
2873 unsigned int g_o_t = dyn.d_un.d_val;
2874 asection *got = bfd_get_section_by_name (abfd, ".got");
2875 if (got != NULL
2876 && bfd_get_section_contents (abfd, got, buf,
2877 g_o_t - got->vma + 4, 4))
2878 glink_vma = bfd_get_32 (abfd, buf);
2879 break;
2880 }
2881 }
2882 free (dynbuf);
2883 }
2884
2885 /* Otherwise we read the first plt entry. */
2886 if (glink_vma == 0)
2887 {
2888 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2889 glink_vma = bfd_get_32 (abfd, buf);
2890 }
2891
2892 if (glink_vma == 0)
2893 return 0;
2894
2895 /* The .glink section usually does not survive the final
2896 link; search for the section (usually .text) where the
2897 glink stubs now reside. */
2898 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2899 if (glink == NULL)
2900 return 0;
2901
2902 /* Determine glink PLT resolver by reading the relative branch
2903 from the first glink stub. */
2904 if (bfd_get_section_contents (abfd, glink, buf,
2905 glink_vma - glink->vma, 4))
2906 {
2907 unsigned int insn = bfd_get_32 (abfd, buf);
2908
2909 /* The first glink stub may either branch to the resolver ... */
2910 insn ^= B;
2911 if ((insn & ~0x3fffffc) == 0)
2912 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2913
2914 /* ... or fall through a bunch of NOPs. */
2915 else if ((insn ^ B ^ NOP) == 0)
2916 for (i = 4;
2917 bfd_get_section_contents (abfd, glink, buf,
2918 glink_vma - glink->vma + i, 4);
2919 i += 4)
2920 if (bfd_get_32 (abfd, buf) != NOP)
2921 {
2922 resolv_vma = glink_vma + i;
2923 break;
2924 }
2925 }
2926
7382d32a 2927 count = relplt->size / sizeof (Elf32_External_Rela);
7382d32a
AM
2928 /* If the stubs are those for -shared/-pie then we might have
2929 multiple stubs for each plt entry. If that is the case then
2930 there is no way to associate stubs with their plt entries short
2931 of figuring out the GOT pointer value used in the stub. */
c6dd29ce
AM
2932 if (!is_nonpic_glink_stub (abfd, glink,
2933 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
7382d32a
AM
2934 return 0;
2935
468392fb
AM
2936 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2937 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2938 return -1;
2939
468392fb
AM
2940 size = count * sizeof (asymbol);
2941 p = relplt->relocation;
2942 for (i = 0; i < count; i++, p++)
e054468f
AM
2943 {
2944 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2945 if (p->addend != 0)
2946 size += sizeof ("+0x") - 1 + 8;
2947 }
468392fb
AM
2948
2949 size += sizeof (asymbol) + sizeof ("__glink");
2950
2951 if (resolv_vma)
2952 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2953
2954 s = *ret = bfd_malloc (size);
2955 if (s == NULL)
2956 return -1;
2957
1079403c 2958 stub_vma = glink_vma;
468392fb 2959 names = (char *) (s + count + 1 + (resolv_vma != 0));
1079403c
AM
2960 p = relplt->relocation + count - 1;
2961 for (i = 0; i < count; i++)
468392fb
AM
2962 {
2963 size_t len;
2964
2965 *s = **p->sym_ptr_ptr;
2966 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2967 we are defining a symbol, ensure one of them is set. */
2968 if ((s->flags & BSF_LOCAL) == 0)
2969 s->flags |= BSF_GLOBAL;
6ba2a415 2970 s->flags |= BSF_SYNTHETIC;
468392fb 2971 s->section = glink;
1079403c
AM
2972 stub_vma -= 16;
2973 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
2974 stub_vma -= 32;
468392fb
AM
2975 s->value = stub_vma - glink->vma;
2976 s->name = names;
2977 s->udata.p = NULL;
2978 len = strlen ((*p->sym_ptr_ptr)->name);
2979 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2980 names += len;
e054468f
AM
2981 if (p->addend != 0)
2982 {
2983 memcpy (names, "+0x", sizeof ("+0x") - 1);
2984 names += sizeof ("+0x") - 1;
2985 bfd_sprintf_vma (abfd, names, p->addend);
2986 names += strlen (names);
2987 }
468392fb
AM
2988 memcpy (names, "@plt", sizeof ("@plt"));
2989 names += sizeof ("@plt");
2990 ++s;
1079403c 2991 --p;
468392fb
AM
2992 }
2993
2994 /* Add a symbol at the start of the glink branch table. */
86a4952b 2995 memset (s, 0, sizeof *s);
468392fb 2996 s->the_bfd = abfd;
6ba2a415 2997 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
2998 s->section = glink;
2999 s->value = glink_vma - glink->vma;
3000 s->name = names;
3001 memcpy (names, "__glink", sizeof ("__glink"));
3002 names += sizeof ("__glink");
3003 s++;
3004 count++;
3005
3006 if (resolv_vma)
3007 {
3008 /* Add a symbol for the glink PLT resolver. */
86a4952b 3009 memset (s, 0, sizeof *s);
468392fb 3010 s->the_bfd = abfd;
6ba2a415 3011 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3012 s->section = glink;
3013 s->value = resolv_vma - glink->vma;
3014 s->name = names;
3015 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3016 names += sizeof ("__glink_PLTresolve");
3017 s++;
3018 count++;
3019 }
3020
3021 return count;
3022}
3023\f
25dbc73a
AM
3024/* The following functions are specific to the ELF linker, while
3025 functions above are used generally. They appear in this file more
3026 or less in the order in which they are called. eg.
3027 ppc_elf_check_relocs is called early in the link process,
3028 ppc_elf_finish_dynamic_sections is one of the last functions
3029 called. */
252b5132 3030
a6aa5195 3031/* Track PLT entries needed for a given symbol. We might need more
a877a2b6 3032 than one glink entry per symbol when generating a pic binary. */
a6aa5195
AM
3033struct plt_entry
3034{
3035 struct plt_entry *next;
3036
3037 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3038 This field stores the offset into .got2 used to initialise the
a877a2b6
AM
3039 GOT pointer reg. It will always be at least 32768. (Current
3040 gcc always uses an offset of 32768, but ld -r will pack .got2
3041 sections together resulting in larger offsets). */
a6aa5195
AM
3042 bfd_vma addend;
3043
3044 /* The .got2 section. */
3045 asection *sec;
3046
3047 /* PLT refcount or offset. */
3048 union
3049 {
3050 bfd_signed_vma refcount;
3051 bfd_vma offset;
3052 } plt;
3053
3054 /* .glink stub offset. */
3055 bfd_vma glink_offset;
3056};
3057
1d483afe 3058/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM
3059 selects those that must be copied when linking a shared library,
3060 even when the symbol is local. */
252b5132 3061
1d483afe
AM
3062static int
3063must_be_dyn_reloc (struct bfd_link_info *info,
3064 enum elf_ppc_reloc_type r_type)
3065{
3066 switch (r_type)
3067 {
3068 default:
3069 return 1;
3070
3071 case R_PPC_REL24:
3072 case R_PPC_REL14:
3073 case R_PPC_REL14_BRTAKEN:
3074 case R_PPC_REL14_BRNTAKEN:
3075 case R_PPC_REL32:
3076 return 0;
3077
3078 case R_PPC_TPREL32:
3079 case R_PPC_TPREL16:
3080 case R_PPC_TPREL16_LO:
3081 case R_PPC_TPREL16_HI:
3082 case R_PPC_TPREL16_HA:
0e1862bb 3083 return !bfd_link_executable (info);
1d483afe
AM
3084 }
3085}
252b5132 3086
25dbc73a
AM
3087/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3088 copying dynamic variables from a shared lib into an app's dynbss
3089 section, and instead use a dynamic relocation to point into the
3090 shared lib. */
3091#define ELIMINATE_COPY_RELOCS 1
252b5132 3092
f95f8542
AM
3093/* Used to track dynamic relocations for local symbols. */
3094struct ppc_dyn_relocs
3095{
3096 struct ppc_dyn_relocs *next;
3097
3098 /* The input section of the reloc. */
3099 asection *sec;
3100
3101 /* Total number of relocs copied for the input section. */
3102 unsigned int count : 31;
3103
3104 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3105 unsigned int ifunc : 1;
3106};
3107
25dbc73a 3108/* PPC ELF linker hash entry. */
252b5132 3109
25dbc73a
AM
3110struct ppc_elf_link_hash_entry
3111{
3112 struct elf_link_hash_entry elf;
252b5132 3113
25dbc73a
AM
3114 /* If this symbol is used in the linker created sections, the processor
3115 specific backend uses this field to map the field into the offset
3116 from the beginning of the section. */
3117 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 3118
25dbc73a 3119 /* Track dynamic relocs copied for this symbol. */
6061a67d 3120 struct elf_dyn_relocs *dyn_relocs;
252b5132 3121
25dbc73a
AM
3122 /* Contexts in which symbol is used in the GOT (or TOC).
3123 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3124 corresponding relocs are encountered during check_relocs.
3125 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3126 indicate the corresponding GOT entry type is not needed. */
3127#define TLS_GD 1 /* GD reloc. */
3128#define TLS_LD 2 /* LD reloc. */
3129#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3130#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3131#define TLS_TLS 16 /* Any TLS reloc. */
3132#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
e054468f 3133#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
25dbc73a 3134 char tls_mask;
4dc4a9a5
DJ
3135
3136 /* Nonzero if we have seen a small data relocation referring to this
3137 symbol. */
d3e454b9
AM
3138 unsigned char has_sda_refs : 1;
3139
3140 /* Flag use of given relocations. */
3141 unsigned char has_addr16_ha : 1;
3142 unsigned char has_addr16_lo : 1;
25dbc73a 3143};
252b5132 3144
25dbc73a
AM
3145#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3146
3147/* PPC ELF linker hash table. */
3148
3149struct ppc_elf_link_hash_table
3150{
3151 struct elf_link_hash_table elf;
3152
5446cbdf
AM
3153 /* Various options passed from the linker. */
3154 struct ppc_elf_params *params;
3155
25dbc73a
AM
3156 /* Short-cuts to get to dynamic linker sections. */
3157 asection *got;
3158 asection *relgot;
d7128ce4 3159 asection *glink;
25dbc73a
AM
3160 asection *plt;
3161 asection *relplt;
e054468f
AM
3162 asection *iplt;
3163 asection *reliplt;
25dbc73a
AM
3164 asection *dynbss;
3165 asection *relbss;
3166 asection *dynsbss;
3167 asection *relsbss;
c9a2f333 3168 elf_linker_section_t sdata[2];
25dbc73a 3169 asection *sbss;
6177242a 3170 asection *glink_eh_frame;
25dbc73a 3171
016687f8
AM
3172 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3173 asection *srelplt2;
3174
3175 /* The .got.plt section (VxWorks only)*/
3176 asection *sgotplt;
3177
1d483afe 3178 /* Shortcut to __tls_get_addr. */
25dbc73a 3179 struct elf_link_hash_entry *tls_get_addr;
252b5132 3180
016687f8
AM
3181 /* The bfd that forced an old-style PLT. */
3182 bfd *old_bfd;
5b914448 3183
25dbc73a
AM
3184 /* TLS local dynamic got entry handling. */
3185 union {
3186 bfd_signed_vma refcount;
3187 bfd_vma offset;
3188 } tlsld_got;
252b5132 3189
c6dd29ce 3190 /* Offset of branch table to PltResolve function in glink. */
d7128ce4
AM
3191 bfd_vma glink_pltresolve;
3192
3b36f7e6
AM
3193 /* Size of reserved GOT entries. */
3194 unsigned int got_header_size;
3195 /* Non-zero if allocating the header left a gap. */
3196 unsigned int got_gap;
3197
4a3dc543
RS
3198 /* The type of PLT we have chosen to use. */
3199 enum ppc_elf_plt_type plt_type;
3200
9d8504b1 3201 /* True if the target system is VxWorks. */
016687f8 3202 unsigned int is_vxworks:1;
9d8504b1
PB
3203
3204 /* The size of PLT entries. */
3205 int plt_entry_size;
3206 /* The distance between adjacent PLT slots. */
3207 int plt_slot_size;
3208 /* The size of the first PLT entry. */
3209 int plt_initial_entry_size;
016687f8 3210
87d72d41
AM
3211 /* Small local sym cache. */
3212 struct sym_cache sym_cache;
25dbc73a 3213};
252b5132 3214
94caa966
AM
3215/* Rename some of the generic section flags to better document how they
3216 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3217
3218/* Nonzero if this section has TLS related relocations. */
3219#define has_tls_reloc sec_flg0
3220
3221/* Nonzero if this section has a call to __tls_get_addr. */
3222#define has_tls_get_addr_call sec_flg1
3223
25dbc73a 3224/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 3225
25dbc73a 3226#define ppc_elf_hash_table(p) \
4dfe6ac6
NC
3227 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3228 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
252b5132 3229
25dbc73a 3230/* Create an entry in a PPC ELF linker hash table. */
252b5132 3231
25dbc73a
AM
3232static struct bfd_hash_entry *
3233ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3234 struct bfd_hash_table *table,
3235 const char *string)
252b5132 3236{
25dbc73a
AM
3237 /* Allocate the structure if it has not already been allocated by a
3238 subclass. */
3239 if (entry == NULL)
3240 {
3241 entry = bfd_hash_allocate (table,
3242 sizeof (struct ppc_elf_link_hash_entry));
3243 if (entry == NULL)
3244 return entry;
3245 }
252b5132 3246
25dbc73a
AM
3247 /* Call the allocation method of the superclass. */
3248 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3249 if (entry != NULL)
3250 {
3251 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3252 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3253 ppc_elf_hash_entry (entry)->tls_mask = 0;
5240d94d 3254 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
25dbc73a 3255 }
252b5132 3256
25dbc73a 3257 return entry;
252b5132 3258}
3dab13f6 3259
25dbc73a 3260/* Create a PPC ELF linker hash table. */
3dab13f6 3261
25dbc73a
AM
3262static struct bfd_link_hash_table *
3263ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 3264{
25dbc73a 3265 struct ppc_elf_link_hash_table *ret;
d3e454b9 3266 static struct ppc_elf_params default_params = { PLT_OLD, 0, 1, 0, 0, 12, 0 };
3dab13f6 3267
25dbc73a
AM
3268 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3269 if (ret == NULL)
3270 return NULL;
3dab13f6 3271
66eb6687
AM
3272 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3273 ppc_elf_link_hash_newfunc,
4dfe6ac6
NC
3274 sizeof (struct ppc_elf_link_hash_entry),
3275 PPC32_ELF_DATA))
3dab13f6 3276 {
25dbc73a
AM
3277 free (ret);
3278 return NULL;
3279 }
58111eb7 3280
a6aa5195
AM
3281 ret->elf.init_plt_refcount.refcount = 0;
3282 ret->elf.init_plt_refcount.glist = NULL;
3283 ret->elf.init_plt_offset.offset = 0;
3284 ret->elf.init_plt_offset.glist = NULL;
3285
db434ba0
AM
3286 ret->params = &default_params;
3287
c9a2f333
AM
3288 ret->sdata[0].name = ".sdata";
3289 ret->sdata[0].sym_name = "_SDA_BASE_";
3290 ret->sdata[0].bss_name = ".sbss";
3291
3292 ret->sdata[1].name = ".sdata2";
3293 ret->sdata[1].sym_name = "_SDA2_BASE_";
3294 ret->sdata[1].bss_name = ".sbss2";
3295
9d8504b1
PB
3296 ret->plt_entry_size = 12;
3297 ret->plt_slot_size = 8;
3298 ret->plt_initial_entry_size = 72;
9d8504b1 3299
25dbc73a
AM
3300 return &ret->elf.root;
3301}
3dab13f6 3302
5446cbdf
AM
3303/* Hook linker params into hash table. */
3304
3305void
3306ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3307{
3308 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3309
3310 if (htab)
3311 htab->params = params;
3312}
3313
9d8504b1 3314/* Create .got and the related sections. */
3dab13f6 3315
25dbc73a
AM
3316static bfd_boolean
3317ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3318{
3319 struct ppc_elf_link_hash_table *htab;
3320 asection *s;
3321 flagword flags;
3dab13f6 3322
25dbc73a
AM
3323 if (!_bfd_elf_create_got_section (abfd, info))
3324 return FALSE;
3dab13f6 3325
25dbc73a 3326 htab = ppc_elf_hash_table (info);
3d4d4302 3327 htab->got = s = bfd_get_linker_section (abfd, ".got");
25dbc73a
AM
3328 if (s == NULL)
3329 abort ();
3dab13f6 3330
9d8504b1
PB
3331 if (htab->is_vxworks)
3332 {
3d4d4302 3333 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
9d8504b1
PB
3334 if (!htab->sgotplt)
3335 abort ();
3336 }
3337 else
3338 {
3339 /* The powerpc .got has a blrl instruction in it. Mark it
3340 executable. */
3341 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3342 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3343 if (!bfd_set_section_flags (abfd, s, flags))
3344 return FALSE;
3345 }
3dab13f6 3346
3d4d4302 3347 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
64e77c6d
L
3348 if (!htab->relgot)
3349 abort ();
3dab13f6 3350
25dbc73a
AM
3351 return TRUE;
3352}
3dab13f6 3353
93d1b056
AM
3354/* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3355 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3356 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3357
3358static bfd_boolean
3359ppc_elf_create_linker_section (bfd *abfd,
3360 struct bfd_link_info *info,
3361 flagword flags,
3362 elf_linker_section_t *lsect)
3363{
3364 asection *s;
3365
3366 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3367 | SEC_LINKER_CREATED);
3368
3369 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3370 if (s == NULL)
3371 return FALSE;
3372 lsect->section = s;
3373
3374 /* Define the sym on the first section of this name. */
3375 s = bfd_get_section_by_name (abfd, lsect->name);
3376
3377 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3378 if (lsect->sym == NULL)
3379 return FALSE;
3380 lsect->sym->root.u.def.value = 0x8000;
3381 return TRUE;
3382}
3383
e054468f
AM
3384static bfd_boolean
3385ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3386{
3387 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3388 asection *s;
3389 flagword flags;
3390
3391 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3392 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3393 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3394 htab->glink = s;
3395 if (s == NULL
5446cbdf
AM
3396 || !bfd_set_section_alignment (abfd, s,
3397 htab->params->ppc476_workaround ? 6 : 4))
e054468f
AM
3398 return FALSE;
3399
6177242a
AM
3400 if (!info->no_ld_generated_unwind_info)
3401 {
3402 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3403 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3404 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3405 htab->glink_eh_frame = s;
3406 if (s == NULL
3407 || !bfd_set_section_alignment (abfd, s, 2))
3408 return FALSE;
3409 }
3410
e054468f
AM
3411 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3412 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3413 htab->iplt = s;
3414 if (s == NULL
3415 || !bfd_set_section_alignment (abfd, s, 4))
3416 return FALSE;
3417
3418 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3419 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3420 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
e054468f
AM
3421 htab->reliplt = s;
3422 if (s == NULL
3423 || ! bfd_set_section_alignment (abfd, s, 2))
3424 return FALSE;
93d1b056
AM
3425
3426 if (!ppc_elf_create_linker_section (abfd, info, 0,
3427 &htab->sdata[0]))
3428 return FALSE;
3429
3430 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3431 &htab->sdata[1]))
3432 return FALSE;
3433
e054468f
AM
3434 return TRUE;
3435}
3436
25dbc73a
AM
3437/* We have to create .dynsbss and .rela.sbss here so that they get mapped
3438 to output sections (just like _bfd_elf_create_dynamic_sections has
3439 to create .dynbss and .rela.bss). */
3dab13f6 3440
25dbc73a
AM
3441static bfd_boolean
3442ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3443{
3444 struct ppc_elf_link_hash_table *htab;
3445 asection *s;
3446 flagword flags;
3dab13f6 3447
25dbc73a 3448 htab = ppc_elf_hash_table (info);
3dab13f6 3449
25dbc73a
AM
3450 if (htab->got == NULL
3451 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
3452 return FALSE;
3453
25dbc73a
AM
3454 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3455 return FALSE;
3dab13f6 3456
e054468f
AM
3457 if (htab->glink == NULL
3458 && !ppc_elf_create_glink (abfd, info))
d7128ce4 3459 return FALSE;
3dab13f6 3460
3d4d4302 3461 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
14b2f831
AM
3462 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3463 SEC_ALLOC | SEC_LINKER_CREATED);
3b36f7e6 3464 htab->dynsbss = s;
3496cb2a 3465 if (s == NULL)
25dbc73a 3466 return FALSE;
3dab13f6 3467
0e1862bb 3468 if (! bfd_link_pic (info))
25dbc73a 3469 {
3d4d4302 3470 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
e054468f
AM
3471 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3472 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3473 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 3474 htab->relsbss = s;
25dbc73a 3475 if (s == NULL
25dbc73a
AM
3476 || ! bfd_set_section_alignment (abfd, s, 2))
3477 return FALSE;
3478 }
3dab13f6 3479
711de32c
RS
3480 if (htab->is_vxworks
3481 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3482 return FALSE;
9d8504b1 3483
3d4d4302
AM
3484 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3485 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
25dbc73a
AM
3486 if (s == NULL)
3487 abort ();
3dab13f6 3488
3b36f7e6 3489 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
3490 if (htab->plt_type == PLT_VXWORKS)
3491 /* The VxWorks PLT is a loaded section with contents. */
3492 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
3493 return bfd_set_section_flags (abfd, s, flags);
3494}
3dab13f6 3495
25dbc73a 3496/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 3497
25dbc73a 3498static void
fcfa13d2 3499ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
3500 struct elf_link_hash_entry *dir,
3501 struct elf_link_hash_entry *ind)
3502{
3503 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 3504
25dbc73a
AM
3505 edir = (struct ppc_elf_link_hash_entry *) dir;
3506 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 3507
c79d6685
AM
3508 edir->tls_mask |= eind->tls_mask;
3509 edir->has_sda_refs |= eind->has_sda_refs;
3510
3511 /* If called to transfer flags for a weakdef during processing
3512 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3513 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3514 if (!(ELIMINATE_COPY_RELOCS
3515 && eind->elf.root.type != bfd_link_hash_indirect
3516 && edir->elf.dynamic_adjusted))
3517 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3518
3519 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3520 edir->elf.ref_regular |= eind->elf.ref_regular;
3521 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3522 edir->elf.needs_plt |= eind->elf.needs_plt;
3523 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3524
25dbc73a
AM
3525 if (eind->dyn_relocs != NULL)
3526 {
3527 if (edir->dyn_relocs != NULL)
3dab13f6 3528 {
6061a67d
AM
3529 struct elf_dyn_relocs **pp;
3530 struct elf_dyn_relocs *p;
3dab13f6 3531
fcfa13d2 3532 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
3533 list. Merge any entries against the same section. */
3534 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 3535 {
6061a67d 3536 struct elf_dyn_relocs *q;
25dbc73a
AM
3537
3538 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3539 if (q->sec == p->sec)
3540 {
3541 q->pc_count += p->pc_count;
3542 q->count += p->count;
3543 *pp = p->next;
3544 break;
3545 }
3546 if (q == NULL)
3547 pp = &p->next;
3dab13f6 3548 }
25dbc73a 3549 *pp = edir->dyn_relocs;
3dab13f6 3550 }
25dbc73a
AM
3551
3552 edir->dyn_relocs = eind->dyn_relocs;
3553 eind->dyn_relocs = NULL;
3dab13f6 3554 }
3dab13f6 3555
68ba6d40
AM
3556 /* If we were called to copy over info for a weak sym, that's all.
3557 You might think dyn_relocs need not be copied over; After all,
3558 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 3559 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM
3560 code in ppc_elf_adjust_dynamic_symbol needs to check for
3561 dyn_relocs in read-only sections, and it does so on what is the
3562 DIR sym here. */
3563 if (eind->elf.root.type != bfd_link_hash_indirect)
3564 return;
3565
a6aa5195
AM
3566 /* Copy over the GOT refcount entries that we may have already seen to
3567 the symbol which just became indirect. */
fcfa13d2
AM
3568 edir->elf.got.refcount += eind->elf.got.refcount;
3569 eind->elf.got.refcount = 0;
a6aa5195
AM
3570
3571 /* And plt entries. */
3572 if (eind->elf.plt.plist != NULL)
3573 {
3574 if (edir->elf.plt.plist != NULL)
3575 {
3576 struct plt_entry **entp;
3577 struct plt_entry *ent;
3578
3579 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3580 {
3581 struct plt_entry *dent;
3582
3583 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3584 if (dent->sec == ent->sec && dent->addend == ent->addend)
3585 {
3586 dent->plt.refcount += ent->plt.refcount;
3587 *entp = ent->next;
3588 break;
3589 }
3590 if (dent == NULL)
3591 entp = &ent->next;
3592 }
3593 *entp = edir->elf.plt.plist;
3594 }
3595
3596 edir->elf.plt.plist = eind->elf.plt.plist;
3597 eind->elf.plt.plist = NULL;
3598 }
3599
fcfa13d2 3600 if (eind->elf.dynindx != -1)
25dbc73a 3601 {
fcfa13d2
AM
3602 if (edir->elf.dynindx != -1)
3603 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3604 edir->elf.dynstr_index);
a6aa5195
AM
3605 edir->elf.dynindx = eind->elf.dynindx;
3606 edir->elf.dynstr_index = eind->elf.dynstr_index;
3607 eind->elf.dynindx = -1;
3608 eind->elf.dynstr_index = 0;
25dbc73a 3609 }
25dbc73a 3610}
3dab13f6 3611
25dbc73a
AM
3612/* Hook called by the linker routine which adds symbols from an object
3613 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3614
25dbc73a
AM
3615static bfd_boolean
3616ppc_elf_add_symbol_hook (bfd *abfd,
3617 struct bfd_link_info *info,
3618 Elf_Internal_Sym *sym,
3619 const char **namep ATTRIBUTE_UNUSED,
3620 flagword *flagsp ATTRIBUTE_UNUSED,
3621 asection **secp,
3622 bfd_vma *valp)
3623{
3624 if (sym->st_shndx == SHN_COMMON
0e1862bb 3625 && !bfd_link_relocatable (info)
0c8d6e5c
AM
3626 && is_ppc_elf (info->output_bfd)
3627 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
3628 {
3629 /* Common symbols less than or equal to -G nn bytes are automatically
3630 put into .sbss. */
3631 struct ppc_elf_link_hash_table *htab;
3dab13f6 3632
25dbc73a
AM
3633 htab = ppc_elf_hash_table (info);
3634 if (htab->sbss == NULL)
3635 {
644285ef 3636 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3637
644285ef
AM
3638 if (!htab->elf.dynobj)
3639 htab->elf.dynobj = abfd;
3640
3496cb2a
L
3641 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3642 ".sbss",
3643 flags);
3644 if (htab->sbss == NULL)
25dbc73a 3645 return FALSE;
3dab13f6 3646 }
3dab13f6 3647
25dbc73a
AM
3648 *secp = htab->sbss;
3649 *valp = sym->st_size;
3650 }
3dab13f6 3651
f1885d1e
AM
3652 if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3653 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
3654 && (abfd->flags & DYNAMIC) == 0
3655 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
13a2df29 3656 elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
e054468f 3657
25dbc73a 3658 return TRUE;
3dab13f6
AM
3659}
3660\f
25dbc73a
AM
3661/* Find a linker generated pointer with a given addend and type. */
3662
3663static elf_linker_section_pointers_t *
3664elf_find_pointer_linker_section
3665 (elf_linker_section_pointers_t *linker_pointers,
3666 bfd_vma addend,
3667 elf_linker_section_t *lsect)
252b5132 3668{
25dbc73a
AM
3669 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3670 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3671 return linker_pointers;
252b5132 3672
25dbc73a
AM
3673 return NULL;
3674}
3675
3676/* Allocate a pointer to live in a linker created section. */
3677
3678static bfd_boolean
93d1b056
AM
3679elf_allocate_pointer_linker_section (bfd *abfd,
3680 elf_linker_section_t *lsect,
3681 struct elf_link_hash_entry *h,
3682 const Elf_Internal_Rela *rel)
25dbc73a
AM
3683{
3684 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3685 elf_linker_section_pointers_t *linker_section_ptr;
3686 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3687 bfd_size_type amt;
3688
3689 BFD_ASSERT (lsect != NULL);
3690
3691 /* Is this a global symbol? */
3692 if (h != NULL)
3693 {
3694 struct ppc_elf_link_hash_entry *eh;
3695
3696 /* Has this symbol already been allocated? If so, our work is done. */
3697 eh = (struct ppc_elf_link_hash_entry *) h;
3698 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3699 rel->r_addend,
3700 lsect))
3701 return TRUE;
3702
3703 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3704 }
3705 else
3706 {
0c8d6e5c 3707 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3708
25dbc73a
AM
3709 /* Allocation of a pointer to a local symbol. */
3710 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3711
3712 /* Allocate a table to hold the local symbols if first time. */
3713 if (!ptr)
3714 {
0ffa91dd 3715 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3716
3717 amt = num_symbols;
3718 amt *= sizeof (elf_linker_section_pointers_t *);
3719 ptr = bfd_zalloc (abfd, amt);
3720
3721 if (!ptr)
3722 return FALSE;
3723
3724 elf_local_ptr_offsets (abfd) = ptr;
3725 }
3726
3727 /* Has this symbol already been allocated? If so, our work is done. */
3728 if (elf_find_pointer_linker_section (ptr[r_symndx],
3729 rel->r_addend,
3730 lsect))
3731 return TRUE;
252b5132 3732
25dbc73a 3733 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3734 }
41fcb14e 3735
25dbc73a
AM
3736 /* Allocate space for a pointer in the linker section, and allocate
3737 a new pointer record from internal memory. */
3738 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3739 amt = sizeof (elf_linker_section_pointers_t);
3740 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3741
25dbc73a 3742 if (!linker_section_ptr)
7619e7c7 3743 return FALSE;
41fcb14e 3744
25dbc73a
AM
3745 linker_section_ptr->next = *ptr_linker_section_ptr;
3746 linker_section_ptr->addend = rel->r_addend;
3747 linker_section_ptr->lsect = lsect;
25dbc73a 3748 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3749
93d1b056
AM
3750 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3751 return FALSE;
25dbc73a
AM
3752 linker_section_ptr->offset = lsect->section->size;
3753 lsect->section->size += 4;
7619e7c7 3754
25dbc73a
AM
3755#ifdef DEBUG
3756 fprintf (stderr,
3757 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3758 lsect->name, (long) linker_section_ptr->offset,
3759 (long) lsect->section->size);
3760#endif
7619e7c7
AM
3761
3762 return TRUE;
41fcb14e
AM
3763}
3764
e054468f 3765static struct plt_entry **
25dbc73a
AM
3766update_local_sym_info (bfd *abfd,
3767 Elf_Internal_Shdr *symtab_hdr,
3768 unsigned long r_symndx,
3769 int tls_type)
252b5132 3770{
25dbc73a 3771 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
e054468f 3772 struct plt_entry **local_plt;
25dbc73a 3773 char *local_got_tls_masks;
252b5132 3774
25dbc73a 3775 if (local_got_refcounts == NULL)
252b5132 3776 {
25dbc73a
AM
3777 bfd_size_type size = symtab_hdr->sh_info;
3778
e054468f
AM
3779 size *= (sizeof (*local_got_refcounts)
3780 + sizeof (*local_plt)
3781 + sizeof (*local_got_tls_masks));
25dbc73a
AM
3782 local_got_refcounts = bfd_zalloc (abfd, size);
3783 if (local_got_refcounts == NULL)
e054468f 3784 return NULL;
25dbc73a 3785 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3786 }
41fcb14e 3787
e054468f
AM
3788 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3789 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
25dbc73a 3790 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
3791 if (tls_type != PLT_IFUNC)
3792 local_got_refcounts[r_symndx] += 1;
3793 return local_plt + r_symndx;
25dbc73a 3794}
41fcb14e 3795
a6aa5195 3796static bfd_boolean
3ec01793 3797update_plt_info (bfd *abfd, struct plt_entry **plist,
a6aa5195
AM
3798 asection *sec, bfd_vma addend)
3799{
3800 struct plt_entry *ent;
3801
32af9f6e
AM
3802 if (addend < 32768)
3803 sec = NULL;
3ec01793 3804 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3805 if (ent->sec == sec && ent->addend == addend)
3806 break;
3807 if (ent == NULL)
3808 {
3809 bfd_size_type amt = sizeof (*ent);
3810 ent = bfd_alloc (abfd, amt);
3811 if (ent == NULL)
3812 return FALSE;
3ec01793 3813 ent->next = *plist;
a6aa5195
AM
3814 ent->sec = sec;
3815 ent->addend = addend;
3816 ent->plt.refcount = 0;
3ec01793 3817 *plist = ent;
a6aa5195
AM
3818 }
3819 ent->plt.refcount += 1;
3820 return TRUE;
3821}
3822
3823static struct plt_entry *
3ec01793 3824find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
a6aa5195
AM
3825{
3826 struct plt_entry *ent;
3827
3828 if (addend < 32768)
3829 sec = NULL;
3ec01793 3830 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3831 if (ent->sec == sec && ent->addend == addend)
3832 break;
3833 return ent;
3834}
3835
e054468f
AM
3836static bfd_boolean
3837is_branch_reloc (enum elf_ppc_reloc_type r_type)
3838{
3839 return (r_type == R_PPC_PLTREL24
3840 || r_type == R_PPC_LOCAL24PC
3841 || r_type == R_PPC_REL24
3842 || r_type == R_PPC_REL14
3843 || r_type == R_PPC_REL14_BRTAKEN
3844 || r_type == R_PPC_REL14_BRNTAKEN
3845 || r_type == R_PPC_ADDR24
3846 || r_type == R_PPC_ADDR14
3847 || r_type == R_PPC_ADDR14_BRTAKEN
3848 || r_type == R_PPC_ADDR14_BRNTAKEN);
3849}
3850
25dbc73a
AM
3851static void
3852bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3853{
3854 (*_bfd_error_handler)
3855 (_("%B: relocation %s cannot be used when making a shared object"),
3856 abfd,
3857 ppc_elf_howto_table[r_type]->name);
3858 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3859}
3860
25dbc73a
AM
3861/* Look through the relocs for a section during the first phase, and
3862 allocate space in the global offset table or procedure linkage
3863 table. */
252b5132 3864
b34976b6 3865static bfd_boolean
25dbc73a
AM
3866ppc_elf_check_relocs (bfd *abfd,
3867 struct bfd_link_info *info,
3868 asection *sec,
3869 const Elf_Internal_Rela *relocs)
252b5132 3870{
7619e7c7 3871 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3872 Elf_Internal_Shdr *symtab_hdr;
3873 struct elf_link_hash_entry **sym_hashes;
3874 const Elf_Internal_Rela *rel;
3875 const Elf_Internal_Rela *rel_end;
a6aa5195 3876 asection *got2, *sreloc;
727fc41e 3877 struct elf_link_hash_entry *tga;
25dbc73a 3878
0e1862bb 3879 if (bfd_link_relocatable (info))
25dbc73a 3880 return TRUE;
252b5132 3881
c87b5a93
AM
3882 /* Don't do anything special with non-loaded, non-alloced sections.
3883 In particular, any relocs in such sections should not affect GOT
3884 and PLT reference counting (ie. we don't allow them to create GOT
3885 or PLT entries), there's no possibility or desire to optimize TLS
3886 relocs, and there's not much point in propagating relocs to shared
3887 libs that the dynamic linker won't relocate. */
3888 if ((sec->flags & SEC_ALLOC) == 0)
3889 return TRUE;
3890
252b5132 3891#ifdef DEBUG
25dbc73a
AM
3892 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3893 sec, abfd);
252b5132
RH
3894#endif
3895
0c8d6e5c 3896 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3897
25dbc73a
AM
3898 /* Initialize howto table if not already done. */
3899 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3900 ppc_elf_howto_init ();
3901
7619e7c7 3902 htab = ppc_elf_hash_table (info);
25f23106
AM
3903 if (htab->glink == NULL)
3904 {
3905 if (htab->elf.dynobj == NULL)
3906 htab->elf.dynobj = abfd;
3907 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3908 return FALSE;
3909 }
727fc41e
AM
3910 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3911 FALSE, FALSE, TRUE);
0ffa91dd 3912 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 3913 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3914 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
3915 sreloc = NULL;
3916
3917 rel_end = relocs + sec->reloc_count;
3918 for (rel = relocs; rel < rel_end; rel++)
3919 {
3920 unsigned long r_symndx;
3921 enum elf_ppc_reloc_type r_type;
3922 struct elf_link_hash_entry *h;
727fc41e 3923 int tls_type;
25dbc73a
AM
3924
3925 r_symndx = ELF32_R_SYM (rel->r_info);
3926 if (r_symndx < symtab_hdr->sh_info)
3927 h = NULL;
3928 else
973a3492
L
3929 {
3930 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3931 while (h->root.type == bfd_link_hash_indirect
3932 || h->root.type == bfd_link_hash_warning)
3933 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM
3934
3935 /* PR15323, ref flags aren't set for references in the same
3936 object. */
3937 h->root.non_ir_ref = 1;
973a3492 3938 }
25dbc73a
AM
3939
3940 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3941 This shows up in particular in an R_PPC_ADDR32 in the eabi
3942 startup code. */
3b36f7e6
AM
3943 if (h != NULL
3944 && htab->got == NULL
3945 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3946 {
3b36f7e6
AM
3947 if (htab->elf.dynobj == NULL)
3948 htab->elf.dynobj = abfd;
3949 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3950 return FALSE;
3951 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3952 }
252b5132 3953
727fc41e 3954 tls_type = 0;
de972ffa 3955 r_type = ELF32_R_TYPE (rel->r_info);
06a162cf 3956 if (h == NULL && !htab->is_vxworks)
e054468f 3957 {
06a162cf
AM
3958 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3959 abfd, r_symndx);
3960 if (isym == NULL)
3961 return FALSE;
3962
0bed072f 3963 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
e054468f 3964 {
06a162cf 3965 struct plt_entry **ifunc;
06a162cf 3966
0bed072f 3967 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
06a162cf
AM
3968 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3969 PLT_IFUNC);
3970 if (ifunc == NULL)
e054468f
AM
3971 return FALSE;
3972
06a162cf
AM
3973 /* STT_GNU_IFUNC symbols must have a PLT entry;
3974 In a non-pie executable even when there are
3975 no plt calls. */
0e1862bb 3976 if (!bfd_link_pic (info)
0bed072f 3977 || is_branch_reloc (r_type))
e054468f 3978 {
0bed072f
AM
3979 bfd_vma addend = 0;
3980 if (r_type == R_PPC_PLTREL24)
3981 {
3982 ppc_elf_tdata (abfd)->makes_plt_call = 1;
0e1862bb 3983 if (bfd_link_pic (info))
0bed072f
AM
3984 addend = rel->r_addend;
3985 }
3986 if (!update_plt_info (abfd, ifunc, got2, addend))
3987 return FALSE;
e054468f
AM
3988 }
3989 }
25f23106
AM
3990 }
3991
de972ffa
AM
3992 if (!htab->is_vxworks
3993 && is_branch_reloc (r_type)
3994 && h != NULL
3995 && h == tga)
25f23106 3996 {
de972ffa
AM
3997 if (rel != relocs
3998 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3999 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4000 /* We have a new-style __tls_get_addr call with a marker
4001 reloc. */
4002 ;
4003 else
4004 /* Mark this section as having an old-style call. */
4005 sec->has_tls_get_addr_call = 1;
e054468f 4006 }
727fc41e 4007
25dbc73a
AM
4008 switch (r_type)
4009 {
727fc41e
AM
4010 case R_PPC_TLSGD:
4011 case R_PPC_TLSLD:
4012 /* These special tls relocs tie a call to __tls_get_addr with
4013 its parameter symbol. */
4014 break;
4015
25dbc73a
AM
4016 case R_PPC_GOT_TLSLD16:
4017 case R_PPC_GOT_TLSLD16_LO:
4018 case R_PPC_GOT_TLSLD16_HI:
4019 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4020 tls_type = TLS_TLS | TLS_LD;
4021 goto dogottls;
252b5132 4022
25dbc73a
AM
4023 case R_PPC_GOT_TLSGD16:
4024 case R_PPC_GOT_TLSGD16_LO:
4025 case R_PPC_GOT_TLSGD16_HI:
4026 case R_PPC_GOT_TLSGD16_HA:
4027 tls_type = TLS_TLS | TLS_GD;
4028 goto dogottls;
4029
4030 case R_PPC_GOT_TPREL16:
4031 case R_PPC_GOT_TPREL16_LO:
4032 case R_PPC_GOT_TPREL16_HI:
4033 case R_PPC_GOT_TPREL16_HA:
0e1862bb 4034 if (bfd_link_pic (info))
25dbc73a
AM
4035 info->flags |= DF_STATIC_TLS;
4036 tls_type = TLS_TLS | TLS_TPREL;
4037 goto dogottls;
4038
4039 case R_PPC_GOT_DTPREL16:
4040 case R_PPC_GOT_DTPREL16_LO:
4041 case R_PPC_GOT_DTPREL16_HI:
4042 case R_PPC_GOT_DTPREL16_HA:
4043 tls_type = TLS_TLS | TLS_DTPREL;
4044 dogottls:
4045 sec->has_tls_reloc = 1;
4046 /* Fall thru */
252b5132 4047
25dbc73a
AM
4048 /* GOT16 relocations */
4049 case R_PPC_GOT16:
4050 case R_PPC_GOT16_LO:
4051 case R_PPC_GOT16_HI:
4052 case R_PPC_GOT16_HA:
4053 /* This symbol requires a global offset table entry. */
4054 if (htab->got == NULL)
4055 {
4056 if (htab->elf.dynobj == NULL)
4057 htab->elf.dynobj = abfd;
4058 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4059 return FALSE;
4060 }
4061 if (h != NULL)
4062 {
4063 h->got.refcount += 1;
4064 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4065 }
4066 else
4067 /* This is a global offset table entry for a local symbol. */
4068 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4069 return FALSE;
91e21fb7
AM
4070
4071 /* We may also need a plt entry if the symbol turns out to be
4072 an ifunc. */
0e1862bb 4073 if (h != NULL && !bfd_link_pic (info))
91e21fb7
AM
4074 {
4075 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4076 return FALSE;
4077 }
25dbc73a 4078 break;
252b5132 4079
25dbc73a
AM
4080 /* Indirect .sdata relocation. */
4081 case R_PPC_EMB_SDAI16:
0e1862bb 4082 if (bfd_link_pic (info))
25dbc73a
AM
4083 {
4084 bad_shared_reloc (abfd, r_type);
4085 return FALSE;
4086 }
93d1b056
AM
4087 htab->sdata[0].sym->ref_regular = 1;
4088 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4089 h, rel))
25dbc73a 4090 return FALSE;
046183de
AM
4091 if (h != NULL)
4092 {
4093 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4094 h->non_got_ref = TRUE;
4095 }
25dbc73a 4096 break;
252b5132 4097
25dbc73a
AM
4098 /* Indirect .sdata2 relocation. */
4099 case R_PPC_EMB_SDA2I16:
0e1862bb 4100 if (bfd_link_pic (info))
25dbc73a
AM
4101 {
4102 bad_shared_reloc (abfd, r_type);
4103 return FALSE;
4104 }
93d1b056
AM
4105 htab->sdata[1].sym->ref_regular = 1;
4106 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4107 h, rel))
25dbc73a 4108 return FALSE;
046183de
AM
4109 if (h != NULL)
4110 {
4111 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4112 h->non_got_ref = TRUE;
4113 }
25dbc73a 4114 break;
252b5132 4115
93d1b056
AM
4116 case R_PPC_SDAREL16:
4117 htab->sdata[0].sym->ref_regular = 1;
4118 /* Fall thru */
4119
b9c361e0
JL
4120 case R_PPC_VLE_SDAREL_LO16A:
4121 case R_PPC_VLE_SDAREL_LO16D:
4122 case R_PPC_VLE_SDAREL_HI16A:
4123 case R_PPC_VLE_SDAREL_HI16D:
4124 case R_PPC_VLE_SDAREL_HA16A:
4125 case R_PPC_VLE_SDAREL_HA16D:
046183de
AM
4126 if (h != NULL)
4127 {
4128 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4129 h->non_got_ref = TRUE;
4130 }
4131 break;
4132
b9c361e0
JL
4133 case R_PPC_VLE_REL8:
4134 case R_PPC_VLE_REL15:
4135 case R_PPC_VLE_REL24:
4136 case R_PPC_VLE_LO16A:
4137 case R_PPC_VLE_LO16D:
4138 case R_PPC_VLE_HI16A:
4139 case R_PPC_VLE_HI16D:
4140 case R_PPC_VLE_HA16A:
4141 case R_PPC_VLE_HA16D:
4142 break;
4143
25dbc73a 4144 case R_PPC_EMB_SDA2REL:
0e1862bb 4145 if (bfd_link_pic (info))
046183de
AM
4146 {
4147 bad_shared_reloc (abfd, r_type);
4148 return FALSE;
4149 }
93d1b056 4150 htab->sdata[1].sym->ref_regular = 1;
046183de
AM
4151 if (h != NULL)
4152 {
4153 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4154 h->non_got_ref = TRUE;
4155 }
4156 break;
4157
b9c361e0
JL
4158 case R_PPC_VLE_SDA21_LO:
4159 case R_PPC_VLE_SDA21:
25dbc73a
AM
4160 case R_PPC_EMB_SDA21:
4161 case R_PPC_EMB_RELSDA:
0e1862bb 4162 if (bfd_link_pic (info))
046183de
AM
4163 {
4164 bad_shared_reloc (abfd, r_type);
4165 return FALSE;
4166 }
046183de
AM
4167 if (h != NULL)
4168 {
4169 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4170 h->non_got_ref = TRUE;
4171 }
4172 break;
4173
25dbc73a
AM
4174 case R_PPC_EMB_NADDR32:
4175 case R_PPC_EMB_NADDR16:
4176 case R_PPC_EMB_NADDR16_LO:
4177 case R_PPC_EMB_NADDR16_HI:
4178 case R_PPC_EMB_NADDR16_HA:
0e1862bb 4179 if (bfd_link_pic (info))
25dbc73a
AM
4180 {
4181 bad_shared_reloc (abfd, r_type);
4182 return FALSE;
4183 }
4dc4a9a5 4184 if (h != NULL)
046183de 4185 h->non_got_ref = TRUE;
25dbc73a 4186 break;
252b5132 4187
25dbc73a 4188 case R_PPC_PLTREL24:
de972ffa 4189 if (h == NULL)
6d78d0b9
AM
4190 break;
4191 /* Fall through */
4192 case R_PPC_PLT32:
25dbc73a
AM
4193 case R_PPC_PLTREL32:
4194 case R_PPC_PLT16_LO:
4195 case R_PPC_PLT16_HI:
4196 case R_PPC_PLT16_HA:
4197#ifdef DEBUG
4198 fprintf (stderr, "Reloc requires a PLT entry\n");
4199#endif
4200 /* This symbol requires a procedure linkage table entry. We
4201 actually build the entry in finish_dynamic_symbol,
4202 because this might be a case of linking PIC code without
4203 linking in any dynamic objects, in which case we don't
4204 need to generate a procedure linkage table after all. */
7619e7c7 4205
25dbc73a
AM
4206 if (h == NULL)
4207 {
4208 /* It does not make sense to have a procedure linkage
4209 table entry for a local symbol. */
8de848d8 4210 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
25f53a85
AM
4211 abfd, sec, rel->r_offset,
4212 ppc_elf_howto_table[r_type]->name);
25dbc73a
AM
4213 bfd_set_error (bfd_error_bad_value);
4214 return FALSE;
4215 }
a6aa5195
AM
4216 else
4217 {
016687f8 4218 bfd_vma addend = 0;
ee05f2fe 4219
016687f8
AM
4220 if (r_type == R_PPC_PLTREL24)
4221 {
4222 ppc_elf_tdata (abfd)->makes_plt_call = 1;
0e1862bb 4223 if (bfd_link_pic (info))
a877a2b6 4224 addend = rel->r_addend;
016687f8 4225 }
a6aa5195 4226 h->needs_plt = 1;
32af9f6e 4227 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
a6aa5195
AM
4228 return FALSE;
4229 }
25dbc73a 4230 break;
ee05f2fe 4231
25dbc73a
AM
4232 /* The following relocations don't need to propagate the
4233 relocation if linking a shared object since they are
4234 section relative. */
4235 case R_PPC_SECTOFF:
4236 case R_PPC_SECTOFF_LO:
4237 case R_PPC_SECTOFF_HI:
4238 case R_PPC_SECTOFF_HA:
4239 case R_PPC_DTPREL16:
4240 case R_PPC_DTPREL16_LO:
4241 case R_PPC_DTPREL16_HI:
4242 case R_PPC_DTPREL16_HA:
4243 case R_PPC_TOC16:
4244 break;
252b5132 4245
d7128ce4
AM
4246 case R_PPC_REL16:
4247 case R_PPC_REL16_LO:
4248 case R_PPC_REL16_HI:
4249 case R_PPC_REL16_HA:
016687f8 4250 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
4251 break;
4252
a6aa5195 4253 /* These are just markers. */
25dbc73a
AM
4254 case R_PPC_TLS:
4255 case R_PPC_EMB_MRKREF:
4256 case R_PPC_NONE:
4257 case R_PPC_max:
32af9f6e
AM
4258 case R_PPC_RELAX:
4259 case R_PPC_RELAX_PLT:
4260 case R_PPC_RELAX_PLTREL24:
25dbc73a 4261 break;
252b5132 4262
25dbc73a
AM
4263 /* These should only appear in dynamic objects. */
4264 case R_PPC_COPY:
4265 case R_PPC_GLOB_DAT:
4266 case R_PPC_JMP_SLOT:
4267 case R_PPC_RELATIVE:
e054468f 4268 case R_PPC_IRELATIVE:
25dbc73a 4269 break;
252b5132 4270
25dbc73a
AM
4271 /* These aren't handled yet. We'll report an error later. */
4272 case R_PPC_ADDR30:
4273 case R_PPC_EMB_RELSEC16:
4274 case R_PPC_EMB_RELST_LO:
4275 case R_PPC_EMB_RELST_HI:
4276 case R_PPC_EMB_RELST_HA:
4277 case R_PPC_EMB_BIT_FLD:
4278 break;
252b5132 4279
25dbc73a
AM
4280 /* This refers only to functions defined in the shared library. */
4281 case R_PPC_LOCAL24PC:
727fc41e 4282 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
4283 {
4284 htab->plt_type = PLT_OLD;
4285 htab->old_bfd = abfd;
4286 }
c7e17e05
AM
4287 if (h != NULL && h->type == STT_GNU_IFUNC)
4288 {
0e1862bb 4289 if (bfd_link_pic (info))
c7e17e05
AM
4290 {
4291 info->callbacks->einfo (_("%P: %H: @local call to ifunc %s\n"),
4292 abfd, sec, rel->r_offset,
4293 h->root.root.string);
4294 bfd_set_error (bfd_error_bad_value);
4295 return FALSE;
4296 }
4297 h->needs_plt = 1;
4298 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4299 return FALSE;
4300 }
25dbc73a 4301 break;
252b5132 4302
25dbc73a
AM
4303 /* This relocation describes the C++ object vtable hierarchy.
4304 Reconstruct it for later use during GC. */
4305 case R_PPC_GNU_VTINHERIT:
4306 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4307 return FALSE;
4308 break;
252b5132 4309
25dbc73a
AM
4310 /* This relocation describes which C++ vtable entries are actually
4311 used. Record for later use during GC. */
4312 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
4313 BFD_ASSERT (h != NULL);
4314 if (h != NULL
4315 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
4316 return FALSE;
4317 break;
252b5132 4318
25dbc73a
AM
4319 /* We shouldn't really be seeing these. */
4320 case R_PPC_TPREL32:
1d483afe
AM
4321 case R_PPC_TPREL16:
4322 case R_PPC_TPREL16_LO:
4323 case R_PPC_TPREL16_HI:
4324 case R_PPC_TPREL16_HA:
0e1862bb 4325 if (bfd_link_pic (info))
25dbc73a
AM
4326 info->flags |= DF_STATIC_TLS;
4327 goto dodyn;
252b5132 4328
25dbc73a
AM
4329 /* Nor these. */
4330 case R_PPC_DTPMOD32:
4331 case R_PPC_DTPREL32:
4332 goto dodyn;
252b5132 4333
9edfd1af
AM
4334 case R_PPC_REL32:
4335 if (h == NULL
4336 && got2 != NULL
4337 && (sec->flags & SEC_CODE) != 0
0e1862bb 4338 && bfd_link_pic (info)
4a3dc543 4339 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
4340 {
4341 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4342 the start of a function, which assembles to a REL32
4343 reference to .got2. If we detect one of these, then
4344 force the old PLT layout because the linker cannot
4345 reliably deduce the GOT pointer value needed for
4346 PLT call stubs. */
4347 asection *s;
87d72d41 4348 Elf_Internal_Sym *isym;
9edfd1af 4349
87d72d41
AM
4350 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4351 abfd, r_symndx);
4352 if (isym == NULL)
4353 return FALSE;
4354
4355 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
9edfd1af 4356 if (s == got2)
016687f8
AM
4357 {
4358 htab->plt_type = PLT_OLD;
4359 htab->old_bfd = abfd;
4360 }
9edfd1af 4361 }
7123df0e 4362 if (h == NULL || h == htab->elf.hgot)
fd38b44c 4363 break;
625af618
AM
4364 /* fall through */
4365
4366 case R_PPC_ADDR32:
4367 case R_PPC_ADDR16:
4368 case R_PPC_ADDR16_LO:
4369 case R_PPC_ADDR16_HI:
4370 case R_PPC_ADDR16_HA:
4371 case R_PPC_UADDR32:
4372 case R_PPC_UADDR16:
0e1862bb 4373 if (h != NULL && !bfd_link_pic (info))
625af618
AM
4374 {
4375 /* We may need a plt entry if the symbol turns out to be
4376 a function defined in a dynamic object. */
3ec01793 4377 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
625af618
AM
4378 return FALSE;
4379
4380 /* We may need a copy reloc too. */
4381 h->non_got_ref = 1;
4382 h->pointer_equality_needed = 1;
d3e454b9
AM
4383 if (r_type == R_PPC_ADDR16_HA)
4384 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4385 if (r_type == R_PPC_ADDR16_LO)
4386 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
625af618
AM
4387 }
4388 goto dodyn;
9edfd1af 4389
25dbc73a
AM
4390 case R_PPC_REL24:
4391 case R_PPC_REL14:
4392 case R_PPC_REL14_BRTAKEN:
4393 case R_PPC_REL14_BRNTAKEN:
d7128ce4 4394 if (h == NULL)
25dbc73a 4395 break;
7123df0e 4396 if (h == htab->elf.hgot)
d7128ce4 4397 {
7123df0e 4398 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4399 {
4400 htab->plt_type = PLT_OLD;
4401 htab->old_bfd = abfd;
4402 }
d7128ce4
AM
4403 break;
4404 }
25dbc73a 4405 /* fall through */
ee05f2fe 4406
25dbc73a 4407 case R_PPC_ADDR24:
25dbc73a
AM
4408 case R_PPC_ADDR14:
4409 case R_PPC_ADDR14_BRTAKEN:
4410 case R_PPC_ADDR14_BRNTAKEN:
0e1862bb 4411 if (h != NULL && !bfd_link_pic (info))
25dbc73a
AM
4412 {
4413 /* We may need a plt entry if the symbol turns out to be
4414 a function defined in a dynamic object. */
e054468f 4415 h->needs_plt = 1;
de972ffa 4416 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
a6aa5195 4417 return FALSE;
625af618 4418 break;
25dbc73a 4419 }
7619e7c7 4420
25dbc73a
AM
4421 dodyn:
4422 /* If we are creating a shared library, and this is a reloc
4423 against a global symbol, or a non PC relative reloc
4424 against a local symbol, then we need to copy the reloc
4425 into the shared library. However, if we are linking with
4426 -Bsymbolic, we do not need to copy a reloc against a
4427 global symbol which is defined in an object we are
4428 including in the link (i.e., DEF_REGULAR is set). At
4429 this point we have not seen all the input files, so it is
4430 possible that DEF_REGULAR is not set now but will be set
4431 later (it is never cleared). In case of a weak definition,
4432 DEF_REGULAR may be cleared later by a strong definition in
4433 a shared library. We account for that possibility below by
4434 storing information in the dyn_relocs field of the hash
4435 table entry. A similar situation occurs when creating
4436 shared libraries and symbol visibility changes render the
4437 symbol local.
7619e7c7 4438
25dbc73a
AM
4439 If on the other hand, we are creating an executable, we
4440 may need to keep relocations for symbols satisfied by a
4441 dynamic library if we manage to avoid copy relocs for the
4442 symbol. */
0e1862bb 4443 if ((bfd_link_pic (info)
1d483afe 4444 && (must_be_dyn_reloc (info, r_type)
25dbc73a 4445 || (h != NULL
198f1157 4446 && (!SYMBOLIC_BIND (info, h)
25dbc73a
AM
4447 || h->root.type == bfd_link_hash_defweak
4448 || !h->def_regular))))
4449 || (ELIMINATE_COPY_RELOCS
0e1862bb 4450 && !bfd_link_pic (info)
25dbc73a
AM
4451 && h != NULL
4452 && (h->root.type == bfd_link_hash_defweak
de972ffa 4453 || !h->def_regular)))
25dbc73a 4454 {
25dbc73a
AM
4455#ifdef DEBUG
4456 fprintf (stderr,
4457 "ppc_elf_check_relocs needs to "
4458 "create relocation for %s\n",
4459 (h && h->root.root.string
4460 ? h->root.root.string : "<unknown>"));
4461#endif
4462 if (sreloc == NULL)
4463 {
c9a2f333
AM
4464 if (htab->elf.dynobj == NULL)
4465 htab->elf.dynobj = abfd;
83bac4b0
NC
4466
4467 sreloc = _bfd_elf_make_dynamic_reloc_section
4468 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4469
25dbc73a 4470 if (sreloc == NULL)
83bac4b0 4471 return FALSE;
25dbc73a 4472 }
7619e7c7 4473
25dbc73a
AM
4474 /* If this is a global symbol, we count the number of
4475 relocations we need for this symbol. */
4476 if (h != NULL)
4477 {
f95f8542
AM
4478 struct elf_dyn_relocs *p;
4479 struct elf_dyn_relocs **rel_head;
4480
91d6fa6a 4481 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
f95f8542
AM
4482 p = *rel_head;
4483 if (p == NULL || p->sec != sec)
4484 {
4485 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4486 if (p == NULL)
4487 return FALSE;
4488 p->next = *rel_head;
4489 *rel_head = p;
4490 p->sec = sec;
4491 p->count = 0;
4492 p->pc_count = 0;
4493 }
4494 p->count += 1;
4495 if (!must_be_dyn_reloc (info, r_type))
4496 p->pc_count += 1;
25dbc73a
AM
4497 }
4498 else
4499 {
4500 /* Track dynamic relocs needed for local syms too.
4501 We really need local syms available to do this
4502 easily. Oh well. */
f95f8542
AM
4503 struct ppc_dyn_relocs *p;
4504 struct ppc_dyn_relocs **rel_head;
4505 bfd_boolean is_ifunc;
25dbc73a 4506 asection *s;
6edfbbad 4507 void *vpp;
87d72d41 4508 Elf_Internal_Sym *isym;
6edfbbad 4509
87d72d41
AM
4510 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4511 abfd, r_symndx);
4512 if (isym == NULL)
25dbc73a 4513 return FALSE;
7fce784e 4514
87d72d41
AM
4515 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4516 if (s == NULL)
4517 s = sec;
4518
6edfbbad 4519 vpp = &elf_section_data (s)->local_dynrel;
f95f8542
AM
4520 rel_head = (struct ppc_dyn_relocs **) vpp;
4521 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4522 p = *rel_head;
4523 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4524 p = p->next;
4525 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4526 {
4527 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4528 if (p == NULL)
4529 return FALSE;
4530 p->next = *rel_head;
4531 *rel_head = p;
4532 p->sec = sec;
4533 p->ifunc = is_ifunc;
4534 p->count = 0;
4535 }
4536 p->count += 1;
25dbc73a 4537 }
7619e7c7 4538 }
25dbc73a
AM
4539
4540 break;
7619e7c7
AM
4541 }
4542 }
ee05f2fe 4543
25dbc73a
AM
4544 return TRUE;
4545}
4546\f
34c8bcba
JM
4547
4548/* Merge object attributes from IBFD into OBFD. Raise an error if
4549 there are conflicting attributes. */
4550static bfd_boolean
4551ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4552{
c6e65352
DJ
4553 obj_attribute *in_attr, *in_attrs;
4554 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM
4555
4556 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4557 {
4558 /* This is the first object. Copy the attributes. */
4559 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4560
4561 /* Use the Tag_null value to indicate the attributes have been
4562 initialized. */
4563 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4564
4565 return TRUE;
4566 }
4567
c6e65352
DJ
4568 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4569 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4570
34c8bcba
JM
4571 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4572 non-conflicting ones. */
c6e65352
DJ
4573 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4574 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4575 if (in_attr->i != out_attr->i)
34c8bcba 4576 {
c6e65352
DJ
4577 out_attr->type = 1;
4578 if (out_attr->i == 0)
4579 out_attr->i = in_attr->i;
4580 else if (in_attr->i == 0)
34c8bcba 4581 ;
c6e65352 4582 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM
4583 _bfd_error_handler
4584 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3c7b9897
AM
4585 else if (out_attr->i == 1 && in_attr->i == 3)
4586 _bfd_error_handler
5b914448 4587 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3c7b9897
AM
4588 obfd, ibfd);
4589 else if (out_attr->i == 3 && in_attr->i == 1)
4590 _bfd_error_handler
5b914448 4591 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3c7b9897
AM
4592 ibfd, obfd);
4593 else if (out_attr->i == 3 && in_attr->i == 2)
4594 _bfd_error_handler
5b914448 4595 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3c7b9897
AM
4596 ibfd, obfd);
4597 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
34c8bcba
JM
4598 _bfd_error_handler
4599 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3c7b9897 4600 else if (in_attr->i > 3)
34c8bcba
JM
4601 _bfd_error_handler
4602 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 4603 in_attr->i);
34c8bcba
JM
4604 else
4605 _bfd_error_handler
4606 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ
4607 out_attr->i);
4608 }
4609
4610 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4611 merge non-conflicting ones. */
4612 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4613 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4614 if (in_attr->i != out_attr->i)
4615 {
4616 const char *in_abi = NULL, *out_abi = NULL;
4617
4618 switch (in_attr->i)
4619 {
4620 case 1: in_abi = "generic"; break;
4621 case 2: in_abi = "AltiVec"; break;
4622 case 3: in_abi = "SPE"; break;
4623 }
4624
4625 switch (out_attr->i)
4626 {
4627 case 1: out_abi = "generic"; break;
4628 case 2: out_abi = "AltiVec"; break;
4629 case 3: out_abi = "SPE"; break;
4630 }
4631
4632 out_attr->type = 1;
4633 if (out_attr->i == 0)
4634 out_attr->i = in_attr->i;
4635 else if (in_attr->i == 0)
4636 ;
4637 /* For now, allow generic to transition to AltiVec or SPE
4638 without a warning. If GCC marked files with their stack
4639 alignment and used don't-care markings for files which are
4640 not affected by the vector ABI, we could warn about this
4641 case too. */
4642 else if (out_attr->i == 1)
4643 out_attr->i = in_attr->i;
4644 else if (in_attr->i == 1)
4645 ;
4646 else if (in_abi == NULL)
4647 _bfd_error_handler
4648 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4649 in_attr->i);
4650 else if (out_abi == NULL)
4651 _bfd_error_handler
4652 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4653 in_attr->i);
4654 else
4655 _bfd_error_handler
4656 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4657 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM
4658 }
4659
f82e0623
NF
4660 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4661 and merge non-conflicting ones. */
4662 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4663 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4664 if (in_attr->i != out_attr->i)
4665 {
4666 out_attr->type = 1;
4667 if (out_attr->i == 0)
4668 out_attr->i = in_attr->i;
4669 else if (in_attr->i == 0)
4670 ;
4671 else if (out_attr->i == 1 && in_attr->i == 2)
4672 _bfd_error_handler
4673 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4674 else if (out_attr->i == 2 && in_attr->i == 1)
4675 _bfd_error_handler
4676 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4677 else if (in_attr->i > 2)
4678 _bfd_error_handler
4679 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4680 in_attr->i);
4681 else
4682 _bfd_error_handler
4683 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4684 out_attr->i);
4685 }
4686
34c8bcba
JM
4687 /* Merge Tag_compatibility attributes and any common GNU ones. */
4688 _bfd_elf_merge_object_attributes (ibfd, obfd);
4689
4690 return TRUE;
4691}
4692
8853c3d3
AM
4693/* Merge backend specific data from an object file to the output
4694 object file when linking. */
4695
4696static bfd_boolean
4697ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4698{
4699 flagword old_flags;
4700 flagword new_flags;
4701 bfd_boolean error;
4702
0c8d6e5c 4703 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4704 return TRUE;
4705
cc643b88 4706 /* Check if we have the same endianness. */
8853c3d3
AM
4707 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4708 return FALSE;
4709
34c8bcba
JM
4710 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4711 return FALSE;
4712
8853c3d3
AM
4713 new_flags = elf_elfheader (ibfd)->e_flags;
4714 old_flags = elf_elfheader (obfd)->e_flags;
4715 if (!elf_flags_init (obfd))
4716 {
4717 /* First call, no flags set. */
4718 elf_flags_init (obfd) = TRUE;
4719 elf_elfheader (obfd)->e_flags = new_flags;
4720 }
4721
4722 /* Compatible flags are ok. */
4723 else if (new_flags == old_flags)
4724 ;
4725
4726 /* Incompatible flags. */
4727 else
4728 {
4729 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4730 to be linked with either. */
4731 error = FALSE;
4732 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4733 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4734 {
4735 error = TRUE;
4736 (*_bfd_error_handler)
4737 (_("%B: compiled with -mrelocatable and linked with "
4738 "modules compiled normally"), ibfd);
4739 }
4740 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4741 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4742 {
4743 error = TRUE;
4744 (*_bfd_error_handler)
4745 (_("%B: compiled normally and linked with "
4746 "modules compiled with -mrelocatable"), ibfd);
4747 }
4748
4749 /* The output is -mrelocatable-lib iff both the input files are. */
4750 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4751 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4752
4753 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4754 but each input file is either -mrelocatable or -mrelocatable-lib. */
4755 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4756 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4757 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4758 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4759
4760 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4761 any module uses it. */
4762 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4763
4764 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4765 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4766
4767 /* Warn about any other mismatches. */
4768 if (new_flags != old_flags)
4769 {
4770 error = TRUE;
4771 (*_bfd_error_handler)
4772 (_("%B: uses different e_flags (0x%lx) fields "
4773 "than previous modules (0x%lx)"),
4774 ibfd, (long) new_flags, (long) old_flags);
4775 }
4776
4777 if (error)
4778 {
4779 bfd_set_error (bfd_error_bad_value);
4780 return FALSE;
4781 }
4782 }
4783
4784 return TRUE;
4785}
b9c361e0
JL
4786
4787static void
86c95733
AM
4788ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4789 bfd_vma value,
4790 split16_format_type split16_format)
b9c361e0
JL
4791
4792{
86c95733 4793 unsigned int insn, top5;
b9c361e0 4794
86c95733
AM
4795 insn = bfd_get_32 (output_bfd, loc);
4796 top5 = value & 0xf800;
4797 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
b9c361e0 4798 insn |= top5;
86c95733
AM
4799 insn |= value & 0x7ff;
4800 bfd_put_32 (output_bfd, insn, loc);
b9c361e0
JL
4801}
4802
8853c3d3 4803\f
d7128ce4
AM
4804/* Choose which PLT scheme to use, and set .plt flags appropriately.
4805 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4806int
4807ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
5446cbdf 4808 struct bfd_link_info *info)
d7128ce4
AM
4809{
4810 struct ppc_elf_link_hash_table *htab;
9d8504b1 4811 flagword flags;
d7128ce4
AM
4812
4813 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4814
4815 if (htab->plt_type == PLT_UNSET)
016687f8 4816 {
b3874e1a
AM
4817 struct elf_link_hash_entry *h;
4818
5446cbdf 4819 if (htab->params->plt_style == PLT_OLD)
016687f8 4820 htab->plt_type = PLT_OLD;
0e1862bb 4821 else if (bfd_link_pic (info)
b3874e1a
AM
4822 && htab->elf.dynamic_sections_created
4823 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4824 FALSE, FALSE, TRUE)) != NULL
4825 && (h->type == STT_FUNC
4826 || h->needs_plt)
4827 && h->ref_regular
4828 && !(SYMBOL_CALLS_LOCAL (info, h)
4829 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4830 && h->root.type == bfd_link_hash_undefweak)))
4831 {
4832 /* Profiling of shared libs (and pies) is not supported with
4833 secure plt, because ppc32 does profiling before a
4834 function prologue and a secure plt pic call stubs needs
4835 r30 to be set up. */
4836 htab->plt_type = PLT_OLD;
4837 }
016687f8
AM
4838 else
4839 {
4840 bfd *ibfd;
5446cbdf 4841 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
016687f8
AM
4842
4843 /* Look through the reloc flags left by ppc_elf_check_relocs.
4844 Use the old style bss plt if a file makes plt calls
4845 without using the new relocs, and if ld isn't given
4846 --secure-plt and we never see REL16 relocs. */
4847 if (plt_type == PLT_UNSET)
4848 plt_type = PLT_OLD;
c72f2fb2 4849 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
0c8d6e5c 4850 if (is_ppc_elf (ibfd))
016687f8
AM
4851 {
4852 if (ppc_elf_tdata (ibfd)->has_rel16)
4853 plt_type = PLT_NEW;
4854 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4855 {
4856 plt_type = PLT_OLD;
4857 htab->old_bfd = ibfd;
4858 break;
4859 }
4860 }
4861 htab->plt_type = plt_type;
4862 }
4863 }
5446cbdf 4864 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
b3874e1a
AM
4865 {
4866 if (htab->old_bfd != NULL)
4867 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4868 htab->old_bfd);
4869 else
4870 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4871 }
d7128ce4 4872
4a3dc543 4873 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4874
4a3dc543 4875 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
4876 {
4877 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4878 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
4879
4880 /* The new PLT is a loaded section. */
4881 if (htab->plt != NULL
4882 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4883 return -1;
4884
4885 /* The new GOT is not executable. */
4886 if (htab->got != NULL
4887 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4888 return -1;
d7128ce4
AM
4889 }
4890 else
4891 {
4892 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
4893 if (htab->glink != NULL
4894 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4895 return -1;
d7128ce4 4896 }
4a3dc543 4897 return htab->plt_type == PLT_NEW;
d7128ce4
AM
4898}
4899\f
25dbc73a
AM
4900/* Return the section that should be marked against GC for a given
4901 relocation. */
586119b3 4902
25dbc73a
AM
4903static asection *
4904ppc_elf_gc_mark_hook (asection *sec,
07adf181 4905 struct bfd_link_info *info,
25dbc73a
AM
4906 Elf_Internal_Rela *rel,
4907 struct elf_link_hash_entry *h,
4908 Elf_Internal_Sym *sym)
4909{
4910 if (h != NULL)
07adf181
AM
4911 switch (ELF32_R_TYPE (rel->r_info))
4912 {
4913 case R_PPC_GNU_VTINHERIT:
4914 case R_PPC_GNU_VTENTRY:
4915 return NULL;
4916 }
4917
4918 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 4919}
a876ecf9 4920
25dbc73a
AM
4921/* Update the got, plt and dynamic reloc reference counts for the
4922 section being removed. */
4923
4924static bfd_boolean
4925ppc_elf_gc_sweep_hook (bfd *abfd,
4926 struct bfd_link_info *info,
4927 asection *sec,
4928 const Elf_Internal_Rela *relocs)
4929{
4930 struct ppc_elf_link_hash_table *htab;
4931 Elf_Internal_Shdr *symtab_hdr;
4932 struct elf_link_hash_entry **sym_hashes;
4933 bfd_signed_vma *local_got_refcounts;
4934 const Elf_Internal_Rela *rel, *relend;
a6aa5195 4935 asection *got2;
25dbc73a 4936
0e1862bb 4937 if (bfd_link_relocatable (info))
7dda2462
TG
4938 return TRUE;
4939
c87b5a93
AM
4940 if ((sec->flags & SEC_ALLOC) == 0)
4941 return TRUE;
4942
25dbc73a
AM
4943 elf_section_data (sec)->local_dynrel = NULL;
4944
4945 htab = ppc_elf_hash_table (info);
0ffa91dd 4946 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
4947 sym_hashes = elf_sym_hashes (abfd);
4948 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 4949 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4950
4951 relend = relocs + sec->reloc_count;
4952 for (rel = relocs; rel < relend; rel++)
4953 {
4954 unsigned long r_symndx;
4955 enum elf_ppc_reloc_type r_type;
4956 struct elf_link_hash_entry *h = NULL;
4957
4958 r_symndx = ELF32_R_SYM (rel->r_info);
4959 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 4960 {
6061a67d 4961 struct elf_dyn_relocs **pp, *p;
25dbc73a
AM
4962 struct ppc_elf_link_hash_entry *eh;
4963
4964 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4965 while (h->root.type == bfd_link_hash_indirect
4966 || h->root.type == bfd_link_hash_warning)
4967 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4968 eh = (struct ppc_elf_link_hash_entry *) h;
4969
4970 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4971 if (p->sec == sec)
4972 {
4973 /* Everything must go for SEC. */
4974 *pp = p->next;
4975 break;
4976 }
a876ecf9 4977 }
ee05f2fe 4978
25dbc73a 4979 r_type = ELF32_R_TYPE (rel->r_info);
de972ffa
AM
4980 if (!htab->is_vxworks
4981 && h == NULL
4982 && local_got_refcounts != NULL
0e1862bb 4983 && (!bfd_link_pic (info)
de972ffa 4984 || is_branch_reloc (r_type)))
e054468f 4985 {
de972ffa
AM
4986 struct plt_entry **local_plt = (struct plt_entry **)
4987 (local_got_refcounts + symtab_hdr->sh_info);
4988 char *local_got_tls_masks = (char *)
4989 (local_plt + symtab_hdr->sh_info);
4990 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
e054468f 4991 {
de972ffa 4992 struct plt_entry **ifunc = local_plt + r_symndx;
a877a2b6
AM
4993 bfd_vma addend = 0;
4994 struct plt_entry *ent;
4995
0e1862bb 4996 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
a877a2b6
AM
4997 addend = rel->r_addend;
4998 ent = find_plt_ent (ifunc, got2, addend);
e054468f
AM
4999 if (ent->plt.refcount > 0)
5000 ent->plt.refcount -= 1;
5001 continue;
5002 }
5003 }
5004
25dbc73a 5005 switch (r_type)
ee05f2fe 5006 {
25dbc73a
AM
5007 case R_PPC_GOT_TLSLD16:
5008 case R_PPC_GOT_TLSLD16_LO:
5009 case R_PPC_GOT_TLSLD16_HI:
5010 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
5011 case R_PPC_GOT_TLSGD16:
5012 case R_PPC_GOT_TLSGD16_LO:
5013 case R_PPC_GOT_TLSGD16_HI:
5014 case R_PPC_GOT_TLSGD16_HA:
5015 case R_PPC_GOT_TPREL16:
5016 case R_PPC_GOT_TPREL16_LO:
5017 case R_PPC_GOT_TPREL16_HI:
5018 case R_PPC_GOT_TPREL16_HA:
5019 case R_PPC_GOT_DTPREL16:
5020 case R_PPC_GOT_DTPREL16_LO:
5021 case R_PPC_GOT_DTPREL16_HI:
5022 case R_PPC_GOT_DTPREL16_HA:
5023 case R_PPC_GOT16:
5024 case R_PPC_GOT16_LO:
5025 case R_PPC_GOT16_HI:
5026 case R_PPC_GOT16_HA:
5027 if (h != NULL)
ee05f2fe 5028 {
25dbc73a
AM
5029 if (h->got.refcount > 0)
5030 h->got.refcount--;
0e1862bb 5031 if (!bfd_link_pic (info))
91e21fb7
AM
5032 {
5033 struct plt_entry *ent;
5034
5035 ent = find_plt_ent (&h->plt.plist, NULL, 0);
32af9f6e 5036 if (ent != NULL && ent->plt.refcount > 0)
91e21fb7
AM
5037 ent->plt.refcount -= 1;
5038 }
ee05f2fe 5039 }
25dbc73a
AM
5040 else if (local_got_refcounts != NULL)
5041 {
5042 if (local_got_refcounts[r_symndx] > 0)
5043 local_got_refcounts[r_symndx]--;
5044 }
5045 break;
ee05f2fe 5046
25dbc73a
AM
5047 case R_PPC_REL24:
5048 case R_PPC_REL14:
5049 case R_PPC_REL14_BRTAKEN:
5050 case R_PPC_REL14_BRNTAKEN:
5051 case R_PPC_REL32:
3b36f7e6 5052 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM
5053 break;
5054 /* Fall thru */
ee05f2fe 5055
25dbc73a
AM
5056 case R_PPC_ADDR32:
5057 case R_PPC_ADDR24:
5058 case R_PPC_ADDR16:
5059 case R_PPC_ADDR16_LO:
5060 case R_PPC_ADDR16_HI:
5061 case R_PPC_ADDR16_HA:
5062 case R_PPC_ADDR14:
5063 case R_PPC_ADDR14_BRTAKEN:
5064 case R_PPC_ADDR14_BRNTAKEN:
5065 case R_PPC_UADDR32:
5066 case R_PPC_UADDR16:
0e1862bb 5067 if (bfd_link_pic (info))
87538722
AM
5068 break;
5069
25dbc73a
AM
5070 case R_PPC_PLT32:
5071 case R_PPC_PLTREL24:
87538722 5072 case R_PPC_PLTREL32:
25dbc73a
AM
5073 case R_PPC_PLT16_LO:
5074 case R_PPC_PLT16_HI:
5075 case R_PPC_PLT16_HA:
5076 if (h != NULL)
5077 {
a877a2b6
AM
5078 bfd_vma addend = 0;
5079 struct plt_entry *ent;
5080
0e1862bb 5081 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
a877a2b6
AM
5082 addend = rel->r_addend;
5083 ent = find_plt_ent (&h->plt.plist, got2, addend);
32af9f6e 5084 if (ent != NULL && ent->plt.refcount > 0)
a6aa5195 5085 ent->plt.refcount -= 1;
25dbc73a
AM
5086 }
5087 break;
ee05f2fe 5088
25dbc73a
AM
5089 default:
5090 break;
5091 }
7fce784e 5092 }
7fce784e
AS
5093 return TRUE;
5094}
25dbc73a 5095\f
3a71aa26
AM
5096/* Set plt output section type, htab->tls_get_addr, and call the
5097 generic ELF tls_setup function. */
7fce784e 5098
25dbc73a 5099asection *
5446cbdf 5100ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 5101{
25dbc73a 5102 struct ppc_elf_link_hash_table *htab;
7fce784e 5103
25dbc73a 5104 htab = ppc_elf_hash_table (info);
a7f2871e
AM
5105 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5106 FALSE, FALSE, TRUE);
f01f1741
AM
5107 if (htab->plt_type != PLT_NEW)
5108 htab->params->no_tls_get_addr_opt = TRUE;
5109
5446cbdf 5110 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM
5111 {
5112 struct elf_link_hash_entry *opt, *tga;
5113 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5114 FALSE, FALSE, TRUE);
5115 if (opt != NULL
5116 && (opt->root.type == bfd_link_hash_defined
5117 || opt->root.type == bfd_link_hash_defweak))
5118 {
5119 /* If glibc supports an optimized __tls_get_addr call stub,
5120 signalled by the presence of __tls_get_addr_opt, and we'll
5121 be calling __tls_get_addr via a plt call stub, then
5122 make __tls_get_addr point to __tls_get_addr_opt. */
5123 tga = htab->tls_get_addr;
5124 if (htab->elf.dynamic_sections_created
5125 && tga != NULL
5126 && (tga->type == STT_FUNC
5127 || tga->needs_plt)
5128 && !(SYMBOL_CALLS_LOCAL (info, tga)
5129 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5130 && tga->root.type == bfd_link_hash_undefweak)))
5131 {
5132 struct plt_entry *ent;
32af9f6e
AM
5133 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5134 if (ent->plt.refcount > 0)
5135 break;
5136 if (ent != NULL)
a7f2871e
AM
5137 {
5138 tga->root.type = bfd_link_hash_indirect;
5139 tga->root.u.i.link = &opt->root;
5140 ppc_elf_copy_indirect_symbol (info, opt, tga);
5141 if (opt->dynindx != -1)
5142 {
5143 /* Use __tls_get_addr_opt in dynamic relocations. */
5144 opt->dynindx = -1;
5145 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5146 opt->dynstr_index);
5147 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5148 return FALSE;
5149 }
5150 htab->tls_get_addr = opt;
5151 }
5152 }
5153 }
5154 else
5446cbdf 5155 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 5156 }
4a3dc543 5157 if (htab->plt_type == PLT_NEW
d7128ce4
AM
5158 && htab->plt != NULL
5159 && htab->plt->output_section != NULL)
5160 {
5161 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5162 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5163 }
5164
25dbc73a 5165 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
5166}
5167
3a71aa26
AM
5168/* Return TRUE iff REL is a branch reloc with a global symbol matching
5169 HASH. */
5170
5171static bfd_boolean
5172branch_reloc_hash_match (const bfd *ibfd,
5173 const Elf_Internal_Rela *rel,
5174 const struct elf_link_hash_entry *hash)
5175{
5176 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5177 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5178 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5179
e054468f 5180 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
3a71aa26
AM
5181 {
5182 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5183 struct elf_link_hash_entry *h;
5184
5185 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5186 while (h->root.type == bfd_link_hash_indirect
5187 || h->root.type == bfd_link_hash_warning)
5188 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5189 if (h == hash)
5190 return TRUE;
5191 }
5192 return FALSE;
5193}
5194
25dbc73a
AM
5195/* Run through all the TLS relocs looking for optimization
5196 opportunities. */
252b5132 5197
25dbc73a
AM
5198bfd_boolean
5199ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5200 struct bfd_link_info *info)
252b5132 5201{
7fce784e 5202 bfd *ibfd;
25dbc73a
AM
5203 asection *sec;
5204 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 5205 int pass;
252b5132 5206
3cbc1e5e 5207 if (!bfd_link_executable (info))
25dbc73a 5208 return TRUE;
252b5132 5209
7619e7c7 5210 htab = ppc_elf_hash_table (info);
663a1470
AM
5211 if (htab == NULL)
5212 return FALSE;
5213
b7fcf6f6
AM
5214 /* Make two passes through the relocs. First time check that tls
5215 relocs involved in setting up a tls_get_addr call are indeed
663a1470
AM
5216 followed by such a call. If they are not, don't do any tls
5217 optimization. On the second pass twiddle tls_mask flags to
5218 notify relocate_section that optimization can be done, and
5219 adjust got and plt refcounts. */
b7fcf6f6 5220 for (pass = 0; pass < 2; ++pass)
c72f2fb2 5221 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
b7fcf6f6
AM
5222 {
5223 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 5224 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
32af9f6e 5225 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
7619e7c7 5226
b7fcf6f6
AM
5227 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5228 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5229 {
5230 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 5231 int expecting_tls_get_addr = 0;
252b5132 5232
b7fcf6f6
AM
5233 /* Read the relocations. */
5234 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5235 info->keep_memory);
5236 if (relstart == NULL)
5237 return FALSE;
7619e7c7 5238
b7fcf6f6
AM
5239 relend = relstart + sec->reloc_count;
5240 for (rel = relstart; rel < relend; rel++)
5241 {
5242 enum elf_ppc_reloc_type r_type;
5243 unsigned long r_symndx;
5244 struct elf_link_hash_entry *h = NULL;
5245 char *tls_mask;
5246 char tls_set, tls_clear;
5247 bfd_boolean is_local;
b7fcf6f6
AM
5248 bfd_signed_vma *got_count;
5249
5250 r_symndx = ELF32_R_SYM (rel->r_info);
5251 if (r_symndx >= symtab_hdr->sh_info)
5252 {
5253 struct elf_link_hash_entry **sym_hashes;
7fce784e 5254
b7fcf6f6
AM
5255 sym_hashes = elf_sym_hashes (ibfd);
5256 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5257 while (h->root.type == bfd_link_hash_indirect
5258 || h->root.type == bfd_link_hash_warning)
5259 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5260 }
7619e7c7 5261
b7fcf6f6
AM
5262 is_local = FALSE;
5263 if (h == NULL
5264 || !h->def_dynamic)
5265 is_local = TRUE;
7619e7c7 5266
b7fcf6f6 5267 r_type = ELF32_R_TYPE (rel->r_info);
663a1470
AM
5268 /* If this section has old-style __tls_get_addr calls
5269 without marker relocs, then check that each
5270 __tls_get_addr call reloc is preceded by a reloc
5271 that conceivably belongs to the __tls_get_addr arg
5272 setup insn. If we don't find matching arg setup
5273 relocs, don't do any tls optimization. */
5274 if (pass == 0
5275 && sec->has_tls_get_addr_call
5276 && h != NULL
5277 && h == htab->tls_get_addr
5278 && !expecting_tls_get_addr
5279 && is_branch_reloc (r_type))
5280 {
25f53a85 5281 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
663a1470
AM
5282 "TLS optimization disabled\n",
5283 ibfd, sec, rel->r_offset);
5284 if (elf_section_data (sec)->relocs != relstart)
5285 free (relstart);
5286 return TRUE;
5287 }
5288
5289 expecting_tls_get_addr = 0;
b7fcf6f6
AM
5290 switch (r_type)
5291 {
5292 case R_PPC_GOT_TLSLD16:
5293 case R_PPC_GOT_TLSLD16_LO:
5294 expecting_tls_get_addr = 1;
5295 /* Fall thru */
5296
5297 case R_PPC_GOT_TLSLD16_HI:
5298 case R_PPC_GOT_TLSLD16_HA:
5299 /* These relocs should never be against a symbol
5300 defined in a shared lib. Leave them alone if
5301 that turns out to be the case. */
5302 if (!is_local)
5303 continue;
5304
5305 /* LD -> LE */
5306 tls_set = 0;
5307 tls_clear = TLS_LD;
5308 break;
5309
5310 case R_PPC_GOT_TLSGD16:
5311 case R_PPC_GOT_TLSGD16_LO:
5312 expecting_tls_get_addr = 1;
5313 /* Fall thru */
5314
5315 case R_PPC_GOT_TLSGD16_HI:
5316 case R_PPC_GOT_TLSGD16_HA:
5317 if (is_local)
5318 /* GD -> LE */
5319 tls_set = 0;
5320 else
5321 /* GD -> IE */
5322 tls_set = TLS_TLS | TLS_TPRELGD;
5323 tls_clear = TLS_GD;
5324 break;
5325
5326 case R_PPC_GOT_TPREL16:
5327 case R_PPC_GOT_TPREL16_LO:
5328 case R_PPC_GOT_TPREL16_HI:
5329 case R_PPC_GOT_TPREL16_HA:
5330 if (is_local)
5331 {
5332 /* IE -> LE */
5333 tls_set = 0;
5334 tls_clear = TLS_TPREL;
5335 break;
5336 }
5337 else
5338 continue;
5339
32af9f6e
AM
5340 case R_PPC_TLSGD:
5341 case R_PPC_TLSLD:
5342 expecting_tls_get_addr = 2;
5343 tls_set = 0;
5344 tls_clear = 0;
5345 break;
5346
b7fcf6f6 5347 default:
25dbc73a 5348 continue;
b7fcf6f6 5349 }
25dbc73a 5350
b7fcf6f6
AM
5351 if (pass == 0)
5352 {
727fc41e 5353 if (!expecting_tls_get_addr
32af9f6e
AM
5354 || (expecting_tls_get_addr == 1
5355 && !sec->has_tls_get_addr_call))
b7fcf6f6 5356 continue;
25dbc73a 5357
3a71aa26
AM
5358 if (rel + 1 < relend
5359 && branch_reloc_hash_match (ibfd, rel + 1,
5360 htab->tls_get_addr))
5361 continue;
25dbc73a 5362
b7fcf6f6
AM
5363 /* Uh oh, we didn't find the expected call. We
5364 could just mark this symbol to exclude it
5365 from tls optimization but it's safer to skip
663a1470 5366 the entire optimization. */
25f53a85 5367 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM
5368 "TLS optimization disabled\n"),
5369 ibfd, sec, rel->r_offset);
5370 if (elf_section_data (sec)->relocs != relstart)
5371 free (relstart);
5372 return TRUE;
b7fcf6f6 5373 }
25dbc73a 5374
32af9f6e
AM
5375 if (expecting_tls_get_addr)
5376 {
5377 struct plt_entry *ent;
5378 bfd_vma addend = 0;
5379
0e1862bb 5380 if (bfd_link_pic (info)
32af9f6e
AM
5381 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5382 addend = rel[1].r_addend;
5383 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5384 got2, addend);
5385 if (ent != NULL && ent->plt.refcount > 0)
5386 ent->plt.refcount -= 1;
5387
5388 if (expecting_tls_get_addr == 2)
5389 continue;
5390 }
5391
b7fcf6f6
AM
5392 if (h != NULL)
5393 {
5394 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5395 got_count = &h->got.refcount;
5396 }
5397 else
5398 {
b7fcf6f6 5399 bfd_signed_vma *lgot_refs;
e054468f 5400 struct plt_entry **local_plt;
b7fcf6f6 5401 char *lgot_masks;
25dbc73a 5402
b7fcf6f6
AM
5403 if (locsyms == NULL)
5404 {
5405 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5406 if (locsyms == NULL)
5407 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5408 symtab_hdr->sh_info,
5409 0, NULL, NULL, NULL);
5410 if (locsyms == NULL)
5411 {
5412 if (elf_section_data (sec)->relocs != relstart)
5413 free (relstart);
5414 return FALSE;
5415 }
5416 }
b7fcf6f6
AM
5417 lgot_refs = elf_local_got_refcounts (ibfd);
5418 if (lgot_refs == NULL)
5419 abort ();
e054468f
AM
5420 local_plt = (struct plt_entry **)
5421 (lgot_refs + symtab_hdr->sh_info);
5422 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
b7fcf6f6
AM
5423 tls_mask = &lgot_masks[r_symndx];
5424 got_count = &lgot_refs[r_symndx];
5425 }
25dbc73a 5426
b7fcf6f6
AM
5427 if (tls_set == 0)
5428 {
5429 /* We managed to get rid of a got entry. */
5430 if (*got_count > 0)
5431 *got_count -= 1;
5432 }
25dbc73a 5433
b7fcf6f6
AM
5434 *tls_mask |= tls_set;
5435 *tls_mask &= ~tls_clear;
5436 }
25dbc73a 5437
b7fcf6f6
AM
5438 if (elf_section_data (sec)->relocs != relstart)
5439 free (relstart);
5440 }
5441
5442 if (locsyms != NULL
5443 && (symtab_hdr->contents != (unsigned char *) locsyms))
5444 {
5445 if (!info->keep_memory)
5446 free (locsyms);
5447 else
5448 symtab_hdr->contents = (unsigned char *) locsyms;
5449 }
5450 }
25dbc73a
AM
5451 return TRUE;
5452}
5453\f
625af618
AM
5454/* Return true if we have dynamic relocs that apply to read-only sections. */
5455
5456static bfd_boolean
5457readonly_dynrelocs (struct elf_link_hash_entry *h)
5458{
6061a67d 5459 struct elf_dyn_relocs *p;
625af618
AM
5460
5461 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5462 {
5463 asection *s = p->sec->output_section;
5464
5465 if (s != NULL
5466 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5467 == (SEC_READONLY | SEC_ALLOC)))
5468 return TRUE;
5469 }
5470 return FALSE;
5471}
5472
25dbc73a
AM
5473/* Adjust a symbol defined by a dynamic object and referenced by a
5474 regular object. The current definition is in some section of the
5475 dynamic object, but we're not including those sections. We have to
5476 change the definition to something the rest of the link can
5477 understand. */
7fce784e 5478
25dbc73a
AM
5479static bfd_boolean
5480ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5481 struct elf_link_hash_entry *h)
5482{
5483 struct ppc_elf_link_hash_table *htab;
5484 asection *s;
7fce784e 5485
25dbc73a
AM
5486#ifdef DEBUG
5487 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5488 h->root.root.string);
5489#endif
252b5132 5490
25dbc73a
AM
5491 /* Make sure we know what is going on here. */
5492 htab = ppc_elf_hash_table (info);
5493 BFD_ASSERT (htab->elf.dynobj != NULL
5494 && (h->needs_plt
91e21fb7 5495 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5496 || h->u.weakdef != NULL
5497 || (h->def_dynamic
5498 && h->ref_regular
5499 && !h->def_regular)));
252b5132 5500
25dbc73a
AM
5501 /* Deal with function syms. */
5502 if (h->type == STT_FUNC
e054468f 5503 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5504 || h->needs_plt)
5505 {
5506 /* Clear procedure linkage table information for any symbol that
5507 won't need a .plt entry. */
a6aa5195
AM
5508 struct plt_entry *ent;
5509 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5510 if (ent->plt.refcount > 0)
5511 break;
5512 if (ent == NULL
e054468f
AM
5513 || (h->type != STT_GNU_IFUNC
5514 && (SYMBOL_CALLS_LOCAL (info, h)
5515 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5516 && h->root.type == bfd_link_hash_undefweak))))
252b5132 5517 {
25dbc73a 5518 /* A PLT entry is not required/allowed when:
252b5132 5519
25dbc73a
AM
5520 1. We are not using ld.so; because then the PLT entry
5521 can't be set up, so we can't use one. In this case,
5522 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 5523
25dbc73a
AM
5524 2. GC has rendered the entry unused.
5525
5526 3. We know for certain that a call to this symbol
5527 will go to this object, or will remain undefined. */
a6aa5195 5528 h->plt.plist = NULL;
25dbc73a 5529 h->needs_plt = 0;
d1eca1e4 5530 h->pointer_equality_needed = 0;
25dbc73a 5531 }
625af618
AM
5532 else
5533 {
d1eca1e4
AM
5534 /* Taking a function's address in a read/write section
5535 doesn't require us to define the function symbol in the
1009ef28 5536 executable on a plt call stub. A dynamic reloc can
d1eca1e4
AM
5537 be used instead. */
5538 if (h->pointer_equality_needed
1009ef28
AM
5539 && h->type != STT_GNU_IFUNC
5540 && !htab->is_vxworks
5541 && !ppc_elf_hash_entry (h)->has_sda_refs
d1eca1e4
AM
5542 && !readonly_dynrelocs (h))
5543 {
5544 h->pointer_equality_needed = 0;
5545 h->non_got_ref = 0;
5546 }
5547
25f23106
AM
5548 /* After adjust_dynamic_symbol, non_got_ref set in the
5549 non-shared case means that we have allocated space in
5550 .dynbss for the symbol and thus dyn_relocs for this
5551 symbol should be discarded.
625af618
AM
5552 If we get here we know we are making a PLT entry for this
5553 symbol, and in an executable we'd normally resolve
5554 relocations against this symbol to the PLT entry. Allow
5555 dynamic relocs if the reference is weak, and the dynamic
5556 relocs will not cause text relocation. */
d1eca1e4
AM
5557 else if (!h->ref_regular_nonweak
5558 && h->non_got_ref
5559 && h->type != STT_GNU_IFUNC
5560 && !htab->is_vxworks
5561 && !ppc_elf_hash_entry (h)->has_sda_refs
5562 && !readonly_dynrelocs (h))
625af618
AM
5563 h->non_got_ref = 0;
5564 }
d3e454b9 5565 h->protected_def = 0;
25dbc73a 5566 return TRUE;
252b5132 5567 }
25dbc73a 5568 else
a6aa5195 5569 h->plt.plist = NULL;
252b5132 5570
25dbc73a
AM
5571 /* If this is a weak symbol, and there is a real definition, the
5572 processor independent code will have arranged for us to see the
5573 real definition first, and we can just use the same value. */
5574 if (h->u.weakdef != NULL)
252b5132 5575 {
25dbc73a
AM
5576 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5577 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5578 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5579 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5580 if (ELIMINATE_COPY_RELOCS)
5581 h->non_got_ref = h->u.weakdef->non_got_ref;
5582 return TRUE;
5583 }
dc810e39 5584
25dbc73a
AM
5585 /* This is a reference to a symbol defined by a dynamic object which
5586 is not a function. */
252b5132 5587
25dbc73a
AM
5588 /* If we are creating a shared library, we must presume that the
5589 only references to the symbol are via the global offset table.
5590 For such cases we need not do anything here; the relocations will
5591 be handled correctly by relocate_section. */
0e1862bb 5592 if (bfd_link_pic (info))
d3e454b9
AM
5593 {
5594 h->protected_def = 0;
5595 return TRUE;
5596 }
252b5132 5597
25dbc73a
AM
5598 /* If there are no references to this symbol that do not use the
5599 GOT, we don't need to generate a copy reloc. */
5600 if (!h->non_got_ref)
d3e454b9
AM
5601 {
5602 h->protected_def = 0;
5603 return TRUE;
5604 }
5605
5606 /* Protected variables do not work with .dynbss. The copy in
5607 .dynbss won't be used by the shared library with the protected
5608 definition for the variable. Editing to PIC, or text relocations
5609 are preferable to an incorrect program. */
5610 if (h->protected_def)
5611 {
5612 if (ELIMINATE_COPY_RELOCS
5613 && ppc_elf_hash_entry (h)->has_addr16_ha
5614 && ppc_elf_hash_entry (h)->has_addr16_lo
5615 && htab->params->pic_fixup == 0
5616 && info->disable_target_specific_optimizations <= 1)
5617 htab->params->pic_fixup = 1;
5618 h->non_got_ref = 0;
5619 return TRUE;
5620 }
25dbc73a 5621
a127494f
AM
5622 /* If -z nocopyreloc was given, we won't generate them either. */
5623 if (info->nocopyreloc)
5624 {
5625 h->non_got_ref = 0;
5626 return TRUE;
5627 }
5628
cfd2c773
NS
5629 /* If we didn't find any dynamic relocs in read-only sections, then
5630 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5631 We can't do this if there are any small data relocations. This
5632 doesn't work on VxWorks, where we can not have dynamic
5633 relocations (other than copy and jump slot relocations) in an
5634 executable. */
4dc4a9a5 5635 if (ELIMINATE_COPY_RELOCS
cfd2c773 5636 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
5637 && !htab->is_vxworks
5638 && !h->def_regular
5639 && !readonly_dynrelocs (h))
25dbc73a 5640 {
625af618
AM
5641 h->non_got_ref = 0;
5642 return TRUE;
252b5132
RH
5643 }
5644
25dbc73a
AM
5645 /* We must allocate the symbol in our .dynbss section, which will
5646 become part of the .bss section of the executable. There will be
5647 an entry for this symbol in the .dynsym section. The dynamic
5648 object will contain position independent code, so all references
5649 from the dynamic object to this symbol will go through the global
5650 offset table. The dynamic linker will use the .dynsym entry to
5651 determine the address it must put in the global offset table, so
5652 both the dynamic object and the regular object will refer to the
5653 same memory location for the variable.
5654
4dc4a9a5
DJ
5655 Of course, if the symbol is referenced using SDAREL relocs, we
5656 must instead allocate it in .sbss. */
25dbc73a 5657
4dc4a9a5 5658 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
5659 s = htab->dynsbss;
5660 else
5661 s = htab->dynbss;
5662 BFD_ASSERT (s != NULL);
5663
5664 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5665 copy the initial value out of the dynamic object and into the
5666 runtime process image. We need to remember the offset into the
5667 .rela.bss section we are going to use. */
1d7e9d18 5668 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
25dbc73a
AM
5669 {
5670 asection *srel;
5671
4dc4a9a5 5672 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
5673 srel = htab->relsbss;
5674 else
5675 srel = htab->relbss;
5676 BFD_ASSERT (srel != NULL);
5677 srel->size += sizeof (Elf32_External_Rela);
5678 h->needs_copy = 1;
5679 }
7619e7c7 5680
6cabe1ea 5681 return _bfd_elf_adjust_dynamic_copy (info, h, s);
25dbc73a
AM
5682}
5683\f
ac39eb42
AM
5684/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5685 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5686 specifying the addend on the plt relocation. For -fpic code, the sym
5687 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5688 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
5689
5690static bfd_boolean
5691add_stub_sym (struct plt_entry *ent,
5692 struct elf_link_hash_entry *h,
ac39eb42 5693 struct bfd_link_info *info)
0ba07910
AM
5694{
5695 struct elf_link_hash_entry *sh;
5696 size_t len1, len2, len3;
5697 char *name;
ac39eb42
AM
5698 const char *stub;
5699 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5700
0e1862bb 5701 if (bfd_link_pic (info))
ac39eb42
AM
5702 stub = ".plt_pic32.";
5703 else
5704 stub = ".plt_call32.";
0ba07910
AM
5705
5706 len1 = strlen (h->root.root.string);
ac39eb42 5707 len2 = strlen (stub);
0ba07910
AM
5708 len3 = 0;
5709 if (ent->sec)
5710 len3 = strlen (ent->sec->name);
ac39eb42 5711 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
5712 if (name == NULL)
5713 return FALSE;
5714 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5715 if (ent->sec)
5716 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
5717 memcpy (name + 8 + len3, stub, len2);
5718 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
5719 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5720 if (sh == NULL)
5721 return FALSE;
5722 if (sh->root.type == bfd_link_hash_new)
5723 {
5724 sh->root.type = bfd_link_hash_defined;
5725 sh->root.u.def.section = htab->glink;
5726 sh->root.u.def.value = ent->glink_offset;
5727 sh->ref_regular = 1;
5728 sh->def_regular = 1;
5729 sh->ref_regular_nonweak = 1;
5730 sh->forced_local = 1;
5731 sh->non_elf = 0;
2ec55de3 5732 sh->root.linker_def = 1;
0ba07910
AM
5733 }
5734 return TRUE;
5735}
5736
3b36f7e6
AM
5737/* Allocate NEED contiguous space in .got, and return the offset.
5738 Handles allocation of the got header when crossing 32k. */
5739
5740static bfd_vma
5741allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5742{
5743 bfd_vma where;
4a3dc543 5744 unsigned int max_before_header;
3b36f7e6 5745
4a3dc543 5746 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
5747 {
5748 where = htab->got->size;
5749 htab->got->size += need;
5750 }
3b36f7e6
AM
5751 else
5752 {
4a3dc543
RS
5753 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5754 if (need <= htab->got_gap)
3b36f7e6 5755 {
4a3dc543
RS
5756 where = max_before_header - htab->got_gap;
5757 htab->got_gap -= need;
5758 }
5759 else
5760 {
5761 if (htab->got->size + need > max_before_header
5762 && htab->got->size <= max_before_header)
5763 {
5764 htab->got_gap = max_before_header - htab->got->size;
5765 htab->got->size = max_before_header + htab->got_header_size;
5766 }
5767 where = htab->got->size;
5768 htab->got->size += need;
3b36f7e6 5769 }
3b36f7e6
AM
5770 }
5771 return where;
5772}
5773
25dbc73a 5774/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 5775
b34976b6 5776static bfd_boolean
25dbc73a 5777allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 5778{
25dbc73a
AM
5779 struct bfd_link_info *info = inf;
5780 struct ppc_elf_link_hash_entry *eh;
7619e7c7 5781 struct ppc_elf_link_hash_table *htab;
6061a67d 5782 struct elf_dyn_relocs *p;
252b5132 5783
25dbc73a 5784 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5785 return TRUE;
252b5132 5786
7619e7c7 5787 htab = ppc_elf_hash_table (info);
e054468f
AM
5788 if (htab->elf.dynamic_sections_created
5789 || h->type == STT_GNU_IFUNC)
252b5132 5790 {
a6aa5195
AM
5791 struct plt_entry *ent;
5792 bfd_boolean doneone = FALSE;
28e99bb6 5793 bfd_vma plt_offset = 0, glink_offset = 0;
e054468f 5794 bfd_boolean dyn;
28e99bb6 5795
a6aa5195
AM
5796 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5797 if (ent->plt.refcount > 0)
5798 {
5799 /* Make sure this symbol is output as a dynamic symbol. */
5800 if (h->dynindx == -1
e054468f
AM
5801 && !h->forced_local
5802 && !h->def_regular
5803 && htab->elf.dynamic_sections_created)
a6aa5195
AM
5804 {
5805 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5806 return FALSE;
5807 }
252b5132 5808
e054468f 5809 dyn = htab->elf.dynamic_sections_created;
0e1862bb 5810 if (bfd_link_pic (info)
e054468f
AM
5811 || h->type == STT_GNU_IFUNC
5812 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
a6aa5195
AM
5813 {
5814 asection *s = htab->plt;
25f23106 5815 if (!dyn || h->dynindx == -1)
e054468f 5816 s = htab->iplt;
7619e7c7 5817
25f23106 5818 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
a6aa5195 5819 {
a6aa5195 5820 if (!doneone)
28e99bb6
AM
5821 {
5822 plt_offset = s->size;
5823 s->size += 4;
5824 }
5825 ent->plt.offset = plt_offset;
d7128ce4 5826
a6aa5195 5827 s = htab->glink;
0e1862bb 5828 if (!doneone || bfd_link_pic (info))
28e99bb6
AM
5829 {
5830 glink_offset = s->size;
5831 s->size += GLINK_ENTRY_SIZE;
a7f2871e 5832 if (h == htab->tls_get_addr
5446cbdf 5833 && !htab->params->no_tls_get_addr_opt)
a7f2871e 5834 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
28e99bb6
AM
5835 }
5836 if (!doneone
0e1862bb 5837 && !bfd_link_pic (info)
625af618 5838 && h->def_dynamic
a6aa5195
AM
5839 && !h->def_regular)
5840 {
5841 h->root.u.def.section = s;
28e99bb6 5842 h->root.u.def.value = glink_offset;
a6aa5195 5843 }
28e99bb6 5844 ent->glink_offset = glink_offset;
0ba07910 5845
5446cbdf 5846 if (htab->params->emit_stub_syms
ac39eb42 5847 && !add_stub_sym (ent, h, info))
0ba07910 5848 return FALSE;
a6aa5195
AM
5849 }
5850 else
5851 {
a6aa5195
AM
5852 if (!doneone)
5853 {
28e99bb6
AM
5854 /* If this is the first .plt entry, make room
5855 for the special first entry. */
5856 if (s->size == 0)
9d8504b1 5857 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
5858
5859 /* The PowerPC PLT is actually composed of two
5860 parts, the first part is 2 words (for a load
5861 and a jump), and then there is a remaining
5862 word available at the end. */
9d8504b1
PB
5863 plt_offset = (htab->plt_initial_entry_size
5864 + (htab->plt_slot_size
5865 * ((s->size
5866 - htab->plt_initial_entry_size)
5867 / htab->plt_entry_size)));
28e99bb6
AM
5868
5869 /* If this symbol is not defined in a regular
5870 file, and we are not generating a shared
5b914448 5871 library, then set the symbol to this location
de972ffa
AM
5872 in the .plt. This is to avoid text
5873 relocations, and is required to make
28e99bb6
AM
5874 function pointers compare as equal between
5875 the normal executable and the shared library. */
0e1862bb 5876 if (! bfd_link_pic (info)
625af618 5877 && h->def_dynamic
28e99bb6
AM
5878 && !h->def_regular)
5879 {
5880 h->root.u.def.section = s;
5881 h->root.u.def.value = plt_offset;
5882 }
5883
9d8504b1
PB
5884 /* Make room for this entry. */
5885 s->size += htab->plt_entry_size;
5886 /* After the 8192nd entry, room for two entries
5887 is allocated. */
4a3dc543 5888 if (htab->plt_type == PLT_OLD
9d8504b1
PB
5889 && (s->size - htab->plt_initial_entry_size)
5890 / htab->plt_entry_size
5891 > PLT_NUM_SINGLE_ENTRIES)
5892 s->size += htab->plt_entry_size;
a6aa5195 5893 }
28e99bb6 5894 ent->plt.offset = plt_offset;
a6aa5195 5895 }
25dbc73a 5896
a6aa5195
AM
5897 /* We also need to make an entry in the .rela.plt section. */
5898 if (!doneone)
5899 {
25f23106
AM
5900 if (!htab->elf.dynamic_sections_created
5901 || h->dynindx == -1)
e054468f
AM
5902 htab->reliplt->size += sizeof (Elf32_External_Rela);
5903 else
9d8504b1 5904 {
e054468f
AM
5905 htab->relplt->size += sizeof (Elf32_External_Rela);
5906
5907 if (htab->plt_type == PLT_VXWORKS)
9d8504b1 5908 {
e054468f 5909 /* Allocate space for the unloaded relocations. */
0e1862bb 5910 if (!bfd_link_pic (info)
e054468f 5911 && htab->elf.dynamic_sections_created)
9d8504b1 5912 {
e054468f
AM
5913 if (ent->plt.offset
5914 == (bfd_vma) htab->plt_initial_entry_size)
5915 {
5916 htab->srelplt2->size
5917 += (sizeof (Elf32_External_Rela)
5918 * VXWORKS_PLTRESOLVE_RELOCS);
5919 }
5920
9d8504b1 5921 htab->srelplt2->size
e054468f
AM
5922 += (sizeof (Elf32_External_Rela)
5923 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
9d8504b1
PB
5924 }
5925
e054468f
AM
5926 /* Every PLT entry has an associated GOT entry in
5927 .got.plt. */
5928 htab->sgotplt->size += 4;
9d8504b1 5929 }
9d8504b1 5930 }
a6aa5195
AM
5931 doneone = TRUE;
5932 }
5933 }
5934 else
5935 ent->plt.offset = (bfd_vma) -1;
a6aa5195 5936 }
2ce859a1
AM
5937 else
5938 ent->plt.offset = (bfd_vma) -1;
5939
5940 if (!doneone)
5941 {
5942 h->plt.plist = NULL;
5943 h->needs_plt = 0;
5944 }
25dbc73a
AM
5945 }
5946 else
5947 {
a6aa5195 5948 h->plt.plist = NULL;
25dbc73a
AM
5949 h->needs_plt = 0;
5950 }
5951
5952 eh = (struct ppc_elf_link_hash_entry *) h;
d3e454b9
AM
5953 if (eh->elf.got.refcount > 0
5954 || (ELIMINATE_COPY_RELOCS
5955 && !eh->elf.def_regular
5956 && eh->elf.protected_def
5957 && eh->has_addr16_ha
5958 && eh->has_addr16_lo
5959 && htab->params->pic_fixup > 0))
25dbc73a 5960 {
d6e14abc
AM
5961 bfd_boolean dyn;
5962 unsigned int need;
5963
25dbc73a
AM
5964 /* Make sure this symbol is output as a dynamic symbol. */
5965 if (eh->elf.dynindx == -1
b099ab9f 5966 && !eh->elf.forced_local
25f23106 5967 && eh->elf.type != STT_GNU_IFUNC
b099ab9f 5968 && htab->elf.dynamic_sections_created)
25dbc73a
AM
5969 {
5970 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 5971 return FALSE;
25dbc73a 5972 }
252b5132 5973
d6e14abc
AM
5974 need = 0;
5975 if ((eh->tls_mask & TLS_TLS) != 0)
25dbc73a 5976 {
d6e14abc 5977 if ((eh->tls_mask & TLS_LD) != 0)
252b5132 5978 {
d6e14abc
AM
5979 if (!eh->elf.def_dynamic)
5980 /* We'll just use htab->tlsld_got.offset. This should
5981 always be the case. It's a little odd if we have
5982 a local dynamic reloc against a non-local symbol. */
5983 htab->tlsld_got.refcount += 1;
5984 else
3b36f7e6 5985 need += 8;
252b5132 5986 }
d6e14abc
AM
5987 if ((eh->tls_mask & TLS_GD) != 0)
5988 need += 8;
5989 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5990 need += 4;
5991 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 5992 need += 4;
d6e14abc
AM
5993 }
5994 else
5995 need += 4;
5996 if (need == 0)
5997 eh->elf.got.offset = (bfd_vma) -1;
5998 else
5999 {
3b36f7e6 6000 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a 6001 dyn = htab->elf.dynamic_sections_created;
0e1862bb 6002 if ((bfd_link_pic (info)
25dbc73a
AM
6003 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6004 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6005 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 6006 {
91e21fb7 6007 asection *rsec = htab->relgot;
0bed072f
AM
6008
6009 if (eh->elf.type == STT_GNU_IFUNC)
6010 rsec = htab->reliplt;
3b36f7e6
AM
6011 /* All the entries we allocated need relocs.
6012 Except LD only needs one. */
d6e14abc
AM
6013 if ((eh->tls_mask & TLS_LD) != 0
6014 && eh->elf.def_dynamic)
3b36f7e6 6015 need -= 4;
25f23106 6016 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 6017 }
25dbc73a
AM
6018 }
6019 }
6020 else
6021 eh->elf.got.offset = (bfd_vma) -1;
252b5132 6022
b099ab9f 6023 if (eh->dyn_relocs == NULL
de972ffa 6024 || !htab->elf.dynamic_sections_created)
25dbc73a 6025 return TRUE;
252b5132 6026
25dbc73a
AM
6027 /* In the shared -Bsymbolic case, discard space allocated for
6028 dynamic pc-relative relocs against symbols which turn out to be
6029 defined in regular objects. For the normal shared case, discard
6030 space for relocs that have become local due to symbol visibility
6031 changes. */
6032
0e1862bb 6033 if (bfd_link_pic (info))
25dbc73a
AM
6034 {
6035 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 6036 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
6037 generated via assembly. We want calls to protected symbols to
6038 resolve directly to the function rather than going via the plt.
6039 If people want function pointer comparisons to work as expected
6040 then they should avoid writing weird assembly. */
6041 if (SYMBOL_CALLS_LOCAL (info, h))
6042 {
6061a67d 6043 struct elf_dyn_relocs **pp;
25dbc73a
AM
6044
6045 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 6046 {
25dbc73a
AM
6047 p->count -= p->pc_count;
6048 p->pc_count = 0;
6049 if (p->count == 0)
6050 *pp = p->next;
6051 else
6052 pp = &p->next;
252b5132 6053 }
25dbc73a 6054 }
252b5132 6055
3348747a
NS
6056 if (htab->is_vxworks)
6057 {
6061a67d 6058 struct elf_dyn_relocs **pp;
3348747a
NS
6059
6060 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6061 {
6062 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6063 *pp = p->next;
6064 else
6065 pp = &p->next;
6066 }
6067 }
6068
89200bf8
AM
6069 /* Discard relocs on undefined symbols that must be local. */
6070 if (eh->dyn_relocs != NULL
6071 && h->root.type == bfd_link_hash_undefined
6072 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6073 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6074 eh->dyn_relocs = NULL;
6075
25dbc73a
AM
6076 /* Also discard relocs on undefined weak syms with non-default
6077 visibility. */
cab87ef9
AM
6078 if (eh->dyn_relocs != NULL
6079 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 6080 {
dfbb6ac9
AM
6081 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6082 eh->dyn_relocs = NULL;
6083
6084 /* Make sure undefined weak symbols are output as a dynamic
6085 symbol in PIEs. */
6086 else if (h->dynindx == -1
e054468f
AM
6087 && !h->forced_local
6088 && !h->def_regular)
dfbb6ac9
AM
6089 {
6090 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6091 return FALSE;
6092 }
25dbc73a
AM
6093 }
6094 }
6095 else if (ELIMINATE_COPY_RELOCS)
6096 {
6097 /* For the non-shared case, discard space for relocs against
6098 symbols which turn out to need copy relocs or are not
6099 dynamic. */
7619e7c7 6100
25dbc73a 6101 if (!h->non_got_ref
d3e454b9
AM
6102 && !h->def_regular
6103 && !(h->protected_def
6104 && eh->has_addr16_ha
6105 && eh->has_addr16_lo
6106 && htab->params->pic_fixup > 0))
25dbc73a
AM
6107 {
6108 /* Make sure this symbol is output as a dynamic symbol.
6109 Undefined weak syms won't yet be marked as dynamic. */
6110 if (h->dynindx == -1
25f23106 6111 && !h->forced_local)
25dbc73a
AM
6112 {
6113 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6114 return FALSE;
6115 }
7619e7c7 6116
25dbc73a
AM
6117 /* If that succeeded, we know we'll be keeping all the
6118 relocs. */
6119 if (h->dynindx != -1)
6120 goto keep;
6121 }
252b5132 6122
25dbc73a 6123 eh->dyn_relocs = NULL;
252b5132 6124
25dbc73a
AM
6125 keep: ;
6126 }
252b5132 6127
25dbc73a
AM
6128 /* Finally, allocate space. */
6129 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6130 {
6131 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6132 if (eh->elf.type == STT_GNU_IFUNC)
25f23106 6133 sreloc = htab->reliplt;
25dbc73a
AM
6134 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6135 }
252b5132 6136
25dbc73a
AM
6137 return TRUE;
6138}
7619e7c7 6139
625af618
AM
6140/* Set DF_TEXTREL if we find any dynamic relocs that apply to
6141 read-only sections. */
7619e7c7 6142
25dbc73a 6143static bfd_boolean
625af618 6144maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 6145{
25dbc73a
AM
6146 if (h->root.type == bfd_link_hash_indirect)
6147 return TRUE;
252b5132 6148
625af618 6149 if (readonly_dynrelocs (h))
25dbc73a 6150 {
625af618 6151 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 6152
625af618
AM
6153 /* Not an error, just cut short the traversal. */
6154 return FALSE;
25dbc73a
AM
6155 }
6156 return TRUE;
6157}
6158
6177242a
AM
6159static const unsigned char glink_eh_frame_cie[] =
6160{
6161 0, 0, 0, 16, /* length. */
6162 0, 0, 0, 0, /* id. */
6163 1, /* CIE version. */
6164 'z', 'R', 0, /* Augmentation string. */
6165 4, /* Code alignment. */
6166 0x7c, /* Data alignment. */
6167 65, /* RA reg. */
6168 1, /* Augmentation size. */
6169 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6170 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6171};
6172
25dbc73a
AM
6173/* Set the sizes of the dynamic sections. */
6174
6175static bfd_boolean
93d1b056 6176ppc_elf_size_dynamic_sections (bfd *output_bfd,
25dbc73a
AM
6177 struct bfd_link_info *info)
6178{
6179 struct ppc_elf_link_hash_table *htab;
6180 asection *s;
6181 bfd_boolean relocs;
6182 bfd *ibfd;
7fce784e 6183
252b5132 6184#ifdef DEBUG
25dbc73a 6185 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 6186#endif
252b5132 6187
25dbc73a
AM
6188 htab = ppc_elf_hash_table (info);
6189 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 6190
25dbc73a
AM
6191 if (elf_hash_table (info)->dynamic_sections_created)
6192 {
6193 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 6194 if (bfd_link_executable (info) && !info->nointerp)
25dbc73a 6195 {
3d4d4302 6196 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
25dbc73a
AM
6197 BFD_ASSERT (s != NULL);
6198 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6199 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6200 }
6201 }
252b5132 6202
4a3dc543 6203 if (htab->plt_type == PLT_OLD)
d7128ce4 6204 htab->got_header_size = 16;
4a3dc543 6205 else if (htab->plt_type == PLT_NEW)
d7128ce4 6206 htab->got_header_size = 12;
252b5132 6207
25dbc73a
AM
6208 /* Set up .got offsets for local syms, and space for local dynamic
6209 relocs. */
c72f2fb2 6210 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
25dbc73a
AM
6211 {
6212 bfd_signed_vma *local_got;
6213 bfd_signed_vma *end_local_got;
e054468f
AM
6214 struct plt_entry **local_plt;
6215 struct plt_entry **end_local_plt;
25dbc73a
AM
6216 char *lgot_masks;
6217 bfd_size_type locsymcount;
6218 Elf_Internal_Shdr *symtab_hdr;
7fce784e 6219
0c8d6e5c 6220 if (!is_ppc_elf (ibfd))
25dbc73a 6221 continue;
7fce784e 6222
25dbc73a
AM
6223 for (s = ibfd->sections; s != NULL; s = s->next)
6224 {
f95f8542 6225 struct ppc_dyn_relocs *p;
252b5132 6226
f95f8542 6227 for (p = ((struct ppc_dyn_relocs *)
25dbc73a
AM
6228 elf_section_data (s)->local_dynrel);
6229 p != NULL;
6230 p = p->next)
6231 {
6232 if (!bfd_is_abs_section (p->sec)
6233 && bfd_is_abs_section (p->sec->output_section))
6234 {
6235 /* Input section has been discarded, either because
6236 it is a copy of a linkonce section or due to
6237 linker script /DISCARD/, so we'll be discarding
6238 the relocs too. */
7fce784e 6239 }
3348747a
NS
6240 else if (htab->is_vxworks
6241 && strcmp (p->sec->output_section->name,
6242 ".tls_vars") == 0)
6243 {
6244 /* Relocations in vxworks .tls_vars sections are
6245 handled specially by the loader. */
6246 }
25dbc73a 6247 else if (p->count != 0)
7fce784e 6248 {
25f23106 6249 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6250 if (p->ifunc)
25f23106
AM
6251 sreloc = htab->reliplt;
6252 sreloc->size += p->count * sizeof (Elf32_External_Rela);
25dbc73a
AM
6253 if ((p->sec->output_section->flags
6254 & (SEC_READONLY | SEC_ALLOC))
6255 == (SEC_READONLY | SEC_ALLOC))
6256 info->flags |= DF_TEXTREL;
7fce784e 6257 }
252b5132 6258 }
252b5132 6259 }
252b5132 6260
25dbc73a
AM
6261 local_got = elf_local_got_refcounts (ibfd);
6262 if (!local_got)
6263 continue;
252b5132 6264
0ffa91dd 6265 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
6266 locsymcount = symtab_hdr->sh_info;
6267 end_local_got = local_got + locsymcount;
e054468f
AM
6268 local_plt = (struct plt_entry **) end_local_got;
6269 end_local_plt = local_plt + locsymcount;
6270 lgot_masks = (char *) end_local_plt;
91d6fa6a 6271
25dbc73a
AM
6272 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6273 if (*local_got > 0)
6274 {
d6e14abc
AM
6275 unsigned int need = 0;
6276 if ((*lgot_masks & TLS_TLS) != 0)
25dbc73a 6277 {
d6e14abc
AM
6278 if ((*lgot_masks & TLS_GD) != 0)
6279 need += 8;
6280 if ((*lgot_masks & TLS_LD) != 0)
6281 htab->tlsld_got.refcount += 1;
6282 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6283 need += 4;
6284 if ((*lgot_masks & TLS_DTPREL) != 0)
6285 need += 4;
25dbc73a 6286 }
d6e14abc
AM
6287 else
6288 need += 4;
6289 if (need == 0)
6290 *local_got = (bfd_vma) -1;
25dbc73a
AM
6291 else
6292 {
3b36f7e6 6293 *local_got = allocate_got (htab, need);
0e1862bb 6294 if (bfd_link_pic (info))
0bed072f
AM
6295 {
6296 asection *srel = htab->relgot;
6297 if ((*lgot_masks & PLT_IFUNC) != 0)
6298 srel = htab->reliplt;
6299 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6300 }
25dbc73a
AM
6301 }
6302 }
6303 else
6304 *local_got = (bfd_vma) -1;
e054468f
AM
6305
6306 if (htab->is_vxworks)
6307 continue;
6308
6309 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6310 for (; local_plt < end_local_plt; ++local_plt)
6311 {
6312 struct plt_entry *ent;
6313 bfd_boolean doneone = FALSE;
6314 bfd_vma plt_offset = 0, glink_offset = 0;
6315
6316 for (ent = *local_plt; ent != NULL; ent = ent->next)
6317 if (ent->plt.refcount > 0)
6318 {
91d6fa6a 6319 s = htab->iplt;
e054468f
AM
6320
6321 if (!doneone)
6322 {
6323 plt_offset = s->size;
6324 s->size += 4;
6325 }
6326 ent->plt.offset = plt_offset;
6327
6328 s = htab->glink;
0e1862bb 6329 if (!doneone || bfd_link_pic (info))
e054468f
AM
6330 {
6331 glink_offset = s->size;
6332 s->size += GLINK_ENTRY_SIZE;
6333 }
6334 ent->glink_offset = glink_offset;
6335
6336 if (!doneone)
6337 {
25f23106 6338 htab->reliplt->size += sizeof (Elf32_External_Rela);
e054468f
AM
6339 doneone = TRUE;
6340 }
6341 }
6342 else
6343 ent->plt.offset = (bfd_vma) -1;
6344 }
25dbc73a 6345 }
252b5132 6346
b7fcf6f6
AM
6347 /* Allocate space for global sym dynamic relocs. */
6348 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6349
3b36f7e6
AM
6350 if (htab->tlsld_got.refcount > 0)
6351 {
6352 htab->tlsld_got.offset = allocate_got (htab, 8);
0e1862bb 6353 if (bfd_link_pic (info))
3b36f7e6
AM
6354 htab->relgot->size += sizeof (Elf32_External_Rela);
6355 }
6356 else
6357 htab->tlsld_got.offset = (bfd_vma) -1;
6358
4a3dc543 6359 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
6360 {
6361 unsigned int g_o_t = 32768;
6362
4d962050
AM
6363 /* If we haven't allocated the header, do so now. When we get here,
6364 for old plt/got the got size will be 0 to 32764 (not allocated),
6365 or 32780 to 65536 (header allocated). For new plt/got, the
6366 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM
6367 if (htab->got->size <= 32768)
6368 {
6369 g_o_t = htab->got->size;
4a3dc543 6370 if (htab->plt_type == PLT_OLD)
4d962050 6371 g_o_t += 4;
3b36f7e6
AM
6372 htab->got->size += htab->got_header_size;
6373 }
3b36f7e6
AM
6374
6375 htab->elf.hgot->root.u.def.value = g_o_t;
6376 }
0e1862bb 6377 if (bfd_link_pic (info))
bd6c6e2b
AM
6378 {
6379 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
93d1b056
AM
6380
6381 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6382 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
bd6c6e2b 6383 }
15bfcc77
AM
6384 if (info->emitrelocations)
6385 {
6386 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6387
6388 if (sda != NULL && sda->ref_regular)
6389 sda->root.u.def.section->flags |= SEC_KEEP;
6390 sda = htab->sdata[1].sym;
6391 if (sda != NULL && sda->ref_regular)
6392 sda->root.u.def.section->flags |= SEC_KEEP;
6393 }
3b36f7e6 6394
e054468f
AM
6395 if (htab->glink != NULL
6396 && htab->glink->size != 0
6397 && htab->elf.dynamic_sections_created)
d7128ce4
AM
6398 {
6399 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM
6400 /* Space for the branch table. */
6401 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6402 /* Pad out to align the start of PLTresolve. */
5446cbdf
AM
6403 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6404 ? 63 : 15);
d7128ce4 6405 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910 6406
5446cbdf 6407 if (htab->params->emit_stub_syms)
0ba07910
AM
6408 {
6409 struct elf_link_hash_entry *sh;
6410 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6411 TRUE, FALSE, FALSE);
6412 if (sh == NULL)
6413 return FALSE;
6414 if (sh->root.type == bfd_link_hash_new)
6415 {
6416 sh->root.type = bfd_link_hash_defined;
6417 sh->root.u.def.section = htab->glink;
6418 sh->root.u.def.value = htab->glink_pltresolve;
6419 sh->ref_regular = 1;
6420 sh->def_regular = 1;
6421 sh->ref_regular_nonweak = 1;
6422 sh->forced_local = 1;
6423 sh->non_elf = 0;
2ec55de3 6424 sh->root.linker_def = 1;
0ba07910
AM
6425 }
6426 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6427 TRUE, FALSE, FALSE);
6428 if (sh == NULL)
6429 return FALSE;
6430 if (sh->root.type == bfd_link_hash_new)
6431 {
6432 sh->root.type = bfd_link_hash_defined;
6433 sh->root.u.def.section = htab->glink;
6434 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6435 sh->ref_regular = 1;
6436 sh->def_regular = 1;
6437 sh->ref_regular_nonweak = 1;
6438 sh->forced_local = 1;
6439 sh->non_elf = 0;
2ec55de3 6440 sh->root.linker_def = 1;
0ba07910
AM
6441 }
6442 }
d7128ce4
AM
6443 }
6444
6177242a
AM
6445 if (htab->glink != NULL
6446 && htab->glink->size != 0
6447 && htab->glink_eh_frame != NULL
9a2a56cc
AM
6448 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6449 && _bfd_elf_eh_frame_present (info))
6177242a
AM
6450 {
6451 s = htab->glink_eh_frame;
6452 s->size = sizeof (glink_eh_frame_cie) + 20;
0e1862bb 6453 if (bfd_link_pic (info))
6177242a
AM
6454 {
6455 s->size += 4;
6456 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6457 s->size += 4;
6458 }
6459 }
6460
25dbc73a
AM
6461 /* We've now determined the sizes of the various dynamic sections.
6462 Allocate memory for them. */
6463 relocs = FALSE;
6464 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 6465 {
9d8504b1
PB
6466 bfd_boolean strip_section = TRUE;
6467
25dbc73a
AM
6468 if ((s->flags & SEC_LINKER_CREATED) == 0)
6469 continue;
252b5132 6470
25dbc73a 6471 if (s == htab->plt
e054468f 6472 || s == htab->got)
25dbc73a 6473 {
9d8504b1
PB
6474 /* We'd like to strip these sections if they aren't needed, but if
6475 we've exported dynamic symbols from them we must leave them.
6476 It's too late to tell BFD to get rid of the symbols. */
e054468f 6477 if (htab->elf.hplt != NULL)
9d8504b1 6478 strip_section = FALSE;
25dbc73a
AM
6479 /* Strip this section if we don't need it; see the
6480 comment below. */
6481 }
e054468f
AM
6482 else if (s == htab->iplt
6483 || s == htab->glink
6177242a 6484 || s == htab->glink_eh_frame
e054468f
AM
6485 || s == htab->sgotplt
6486 || s == htab->sbss
6487 || s == htab->dynbss
15bfcc77 6488 || s == htab->dynsbss)
25dbc73a 6489 {
c9a2f333 6490 /* Strip these too. */
25dbc73a 6491 }
15bfcc77
AM
6492 else if (s == htab->sdata[0].section
6493 || s == htab->sdata[1].section)
6494 {
6495 strip_section = (s->flags & SEC_KEEP) == 0;
6496 }
a0f49396
NC
6497 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6498 ".rela"))
25dbc73a 6499 {
c456f082 6500 if (s->size != 0)
25dbc73a
AM
6501 {
6502 /* Remember whether there are any relocation sections. */
6503 relocs = TRUE;
252b5132 6504
25dbc73a
AM
6505 /* We use the reloc_count field as a counter if we need
6506 to copy relocs into the output file. */
6507 s->reloc_count = 0;
252b5132
RH
6508 }
6509 }
25dbc73a
AM
6510 else
6511 {
6512 /* It's not one of our sections, so don't allocate space. */
6513 continue;
6514 }
252b5132 6515
9d8504b1 6516 if (s->size == 0 && strip_section)
25dbc73a 6517 {
c456f082
AM
6518 /* If we don't need this section, strip it from the
6519 output file. This is mostly to handle .rela.bss and
6520 .rela.plt. We must create both sections in
6521 create_dynamic_sections, because they must be created
6522 before the linker maps input sections to output
6523 sections. The linker does that before
6524 adjust_dynamic_symbol is called, and it is that
6525 function which decides whether anything needs to go
6526 into these sections. */
8423293d 6527 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
6528 continue;
6529 }
7fce784e 6530
d7128ce4 6531 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
6532 continue;
6533
25dbc73a
AM
6534 /* Allocate memory for the section contents. */
6535 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6536 if (s->contents == NULL)
6537 return FALSE;
6538 }
252b5132 6539
25dbc73a 6540 if (htab->elf.dynamic_sections_created)
7619e7c7 6541 {
25dbc73a
AM
6542 /* Add some entries to the .dynamic section. We fill in the
6543 values later, in ppc_elf_finish_dynamic_sections, but we
6544 must add the entries now so that we get the correct size for
6545 the .dynamic section. The DT_DEBUG entry is filled in by the
6546 dynamic linker and used by the debugger. */
6547#define add_dynamic_entry(TAG, VAL) \
6548 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 6549
0e1862bb 6550 if (bfd_link_executable (info))
7619e7c7 6551 {
25dbc73a
AM
6552 if (!add_dynamic_entry (DT_DEBUG, 0))
6553 return FALSE;
7619e7c7
AM
6554 }
6555
25dbc73a 6556 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 6557 {
25dbc73a
AM
6558 if (!add_dynamic_entry (DT_PLTGOT, 0)
6559 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6560 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6561 || !add_dynamic_entry (DT_JMPREL, 0))
6562 return FALSE;
6563 }
7619e7c7 6564
c7e17e05
AM
6565 if (htab->plt_type == PLT_NEW
6566 && htab->glink != NULL
6567 && htab->glink->size != 0)
d7128ce4 6568 {
1fe44d79 6569 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4 6570 return FALSE;
5446cbdf 6571 if (!htab->params->no_tls_get_addr_opt
a7f2871e
AM
6572 && htab->tls_get_addr != NULL
6573 && htab->tls_get_addr->plt.plist != NULL
e8910a83 6574 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
a7f2871e 6575 return FALSE;
d7128ce4
AM
6576 }
6577
25dbc73a
AM
6578 if (relocs)
6579 {
6580 if (!add_dynamic_entry (DT_RELA, 0)
6581 || !add_dynamic_entry (DT_RELASZ, 0)
6582 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6583 return FALSE;
6584 }
7619e7c7 6585
25dbc73a
AM
6586 /* If any dynamic relocs apply to a read-only section, then we
6587 need a DT_TEXTREL entry. */
6588 if ((info->flags & DF_TEXTREL) == 0)
625af618 6589 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 6590 info);
7619e7c7 6591
25dbc73a
AM
6592 if ((info->flags & DF_TEXTREL) != 0)
6593 {
6594 if (!add_dynamic_entry (DT_TEXTREL, 0))
6595 return FALSE;
7619e7c7 6596 }
7a2b07ff
NS
6597 if (htab->is_vxworks
6598 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6599 return FALSE;
6600 }
25dbc73a
AM
6601#undef add_dynamic_entry
6602
7e01508c
AM
6603 if (htab->glink_eh_frame != NULL
6604 && htab->glink_eh_frame->contents != NULL)
6605 {
6606 unsigned char *p = htab->glink_eh_frame->contents;
6607 bfd_vma val;
6608
6609 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6610 /* CIE length (rewrite in case little-endian). */
6611 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6612 p += sizeof (glink_eh_frame_cie);
6613 /* FDE length. */
6614 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6615 bfd_put_32 (htab->elf.dynobj, val, p);
6616 p += 4;
6617 /* CIE pointer. */
6618 val = p - htab->glink_eh_frame->contents;
6619 bfd_put_32 (htab->elf.dynobj, val, p);
6620 p += 4;
6621 /* Offset to .glink. Set later. */
6622 p += 4;
6623 /* .glink size. */
6624 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6625 p += 4;
6626 /* Augmentation. */
6627 p += 1;
6628
0e1862bb 6629 if (bfd_link_pic (info)
7e01508c
AM
6630 && htab->elf.dynamic_sections_created)
6631 {
6632 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6633 if (adv < 64)
6634 *p++ = DW_CFA_advance_loc + adv;
6635 else if (adv < 256)
6636 {
6637 *p++ = DW_CFA_advance_loc1;
6638 *p++ = adv;
6639 }
6640 else if (adv < 65536)
6641 {
6642 *p++ = DW_CFA_advance_loc2;
6643 bfd_put_16 (htab->elf.dynobj, adv, p);
6644 p += 2;
6645 }
6646 else
6647 {
6648 *p++ = DW_CFA_advance_loc4;
6649 bfd_put_32 (htab->elf.dynobj, adv, p);
6650 p += 4;
6651 }
6652 *p++ = DW_CFA_register;
6653 *p++ = 65;
6654 p++;
6655 *p++ = DW_CFA_advance_loc + 4;
6656 *p++ = DW_CFA_restore_extended;
6657 *p++ = 65;
6658 }
6659 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6660 == htab->glink_eh_frame->size);
6661 }
6662
7619e7c7
AM
6663 return TRUE;
6664}
0eb4a168 6665
93d1b056
AM
6666/* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6667 if it looks like nothing is using them. */
6668
6669static void
6670maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6671{
6672 struct elf_link_hash_entry *sda = lsect->sym;
6673
6674 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6675 {
6676 asection *s;
6677
6678 s = bfd_get_section_by_name (output_bfd, lsect->name);
6679 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6680 {
6681 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6682 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6683 {
6684 sda->def_regular = 0;
6685 /* This is somewhat magic. See elf_link_output_extsym. */
6686 sda->ref_dynamic = 1;
6687 sda->forced_local = 0;
6688 }
6689 }
6690 }
6691}
6692
6693void
6694ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6695{
6696 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6697
6698 if (htab != NULL)
6699 {
6700 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6701 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6702 }
6703}
6704
6705
0eb4a168
AM
6706/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6707
6708static bfd_boolean
6709ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6710{
6711 if (h->plt.plist != NULL
6712 && !h->def_regular
6713 && (!h->pointer_equality_needed
6714 || !h->ref_regular_nonweak))
6715 return FALSE;
6716
6717 return _bfd_elf_hash_symbol (h);
6718}
25dbc73a
AM
6719\f
6720#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6721
01017ef8
NS
6722/* Relaxation trampolines. r12 is available for clobbering (r11, is
6723 used for some functions that are allowed to break the ABI). */
25dbc73a
AM
6724static const int shared_stub_entry[] =
6725 {
6726 0x7c0802a6, /* mflr 0 */
6727 0x429f0005, /* bcl 20, 31, .Lxxx */
01017ef8
NS
6728 0x7d8802a6, /* mflr 12 */
6729 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
53291d1f 6730 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
25dbc73a 6731 0x7c0803a6, /* mtlr 0 */
01017ef8 6732 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6733 0x4e800420, /* bctr */
6734 };
6735
6736static const int stub_entry[] =
6737 {
01017ef8
NS
6738 0x3d800000, /* lis 12,xxx@ha */
6739 0x398c0000, /* addi 12,12,xxx@l */
6740 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6741 0x4e800420, /* bctr */
6742 };
6743
5446cbdf
AM
6744struct ppc_elf_relax_info
6745{
6746 unsigned int workaround_size;
d3e454b9 6747 unsigned int picfixup_size;
5446cbdf
AM
6748};
6749
6750/* This function implements long branch trampolines, and the ppc476
6751 icache bug workaround. Any section needing trampolines or patch
6752 space for the workaround has its size extended so that we can
53291d1f 6753 add trampolines at the end of the section. */
5446cbdf 6754
25dbc73a
AM
6755static bfd_boolean
6756ppc_elf_relax_section (bfd *abfd,
6757 asection *isec,
6758 struct bfd_link_info *link_info,
6759 bfd_boolean *again)
6760{
d3e454b9 6761 struct one_branch_fixup
25dbc73a 6762 {
d3e454b9 6763 struct one_branch_fixup *next;
25dbc73a 6764 asection *tsec;
01017ef8
NS
6765 /* Final link, can use the symbol offset. For a
6766 relocatable link we use the symbol's index. */
25dbc73a
AM
6767 bfd_vma toff;
6768 bfd_vma trampoff;
6769 };
7619e7c7 6770
25dbc73a
AM
6771 Elf_Internal_Shdr *symtab_hdr;
6772 bfd_byte *contents = NULL;
6773 Elf_Internal_Sym *isymbuf = NULL;
6774 Elf_Internal_Rela *internal_relocs = NULL;
5446cbdf 6775 Elf_Internal_Rela *irel, *irelend = NULL;
d3e454b9 6776 struct one_branch_fixup *branch_fixups = NULL;
5446cbdf 6777 struct ppc_elf_relax_info *relax_info = NULL;
9bc4e62b 6778 unsigned changes = 0;
5446cbdf 6779 bfd_boolean workaround_change;
d7128ce4 6780 struct ppc_elf_link_hash_table *htab;
d3e454b9 6781 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
a6aa5195 6782 asection *got2;
50248c89 6783 bfd_boolean maybe_pasted;
7619e7c7 6784
25dbc73a 6785 *again = FALSE;
7619e7c7 6786
5446cbdf 6787 /* No need to do anything with non-alloc or non-code sections. */
c87b5a93 6788 if ((isec->flags & SEC_ALLOC) == 0
a8ad78a7 6789 || (isec->flags & SEC_CODE) == 0
5446cbdf
AM
6790 || (isec->flags & SEC_LINKER_CREATED) != 0
6791 || isec->size < 4)
25dbc73a 6792 return TRUE;
7619e7c7 6793
c8a1f254
NS
6794 /* We cannot represent the required PIC relocs in the output, so don't
6795 do anything. The linker doesn't support mixing -shared and -r
6796 anyway. */
0e1862bb 6797 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
795bc6b3 6798 return TRUE;
5b914448 6799
5446cbdf
AM
6800 htab = ppc_elf_hash_table (link_info);
6801 if (htab == NULL)
6802 return TRUE;
6803
6804 isec->size = (isec->size + 3) & -4;
6805 if (isec->rawsize == 0)
6806 isec->rawsize = isec->size;
6807 trampbase = isec->size;
6808
53291d1f
AM
6809 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6810 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6811 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6812
d3e454b9
AM
6813 if (htab->params->ppc476_workaround
6814 || htab->params->pic_fixup > 0)
5446cbdf
AM
6815 {
6816 if (elf_section_data (isec)->sec_info == NULL)
6817 {
5446cbdf
AM
6818 elf_section_data (isec)->sec_info
6819 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6820 if (elf_section_data (isec)->sec_info == NULL)
6821 return FALSE;
6822 }
6823 relax_info = elf_section_data (isec)->sec_info;
6824 trampbase -= relax_info->workaround_size;
6825 }
6826
50248c89
AM
6827 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6828 || strcmp (isec->output_section->name, ".fini") == 0);
25dbc73a 6829 /* Space for a branch around any trampolines. */
5446cbdf
AM
6830 trampoff = trampbase;
6831 if (maybe_pasted && trampbase == isec->rawsize)
50248c89 6832 trampoff += 4;
7619e7c7 6833
0ffa91dd 6834 symtab_hdr = &elf_symtab_hdr (abfd);
d3e454b9
AM
6835 picfixup_size = 0;
6836 if (htab->params->branch_trampolines
6837 || htab->params->pic_fixup > 0)
7619e7c7 6838 {
5446cbdf
AM
6839 /* Get a copy of the native relocations. */
6840 if (isec->reloc_count != 0)
25dbc73a 6841 {
5446cbdf
AM
6842 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6843 link_info->keep_memory);
6844 if (internal_relocs == NULL)
6845 goto error_return;
25dbc73a 6846 }
7619e7c7 6847
5446cbdf
AM
6848 got2 = bfd_get_section_by_name (abfd, ".got2");
6849
6850 irelend = internal_relocs + isec->reloc_count;
6851 for (irel = internal_relocs; irel < irelend; irel++)
25dbc73a 6852 {
5446cbdf
AM
6853 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6854 bfd_vma toff, roff;
6855 asection *tsec;
d3e454b9 6856 struct one_branch_fixup *f;
5446cbdf 6857 size_t insn_offset = 0;
d3e454b9 6858 bfd_vma max_branch_offset = 0, val;
5446cbdf
AM
6859 bfd_byte *hit_addr;
6860 unsigned long t0;
6861 struct elf_link_hash_entry *h;
6862 struct plt_entry **plist;
6863 unsigned char sym_type;
6864
6865 switch (r_type)
6866 {
6867 case R_PPC_REL24:
6868 case R_PPC_LOCAL24PC:
6869 case R_PPC_PLTREL24:
6870 max_branch_offset = 1 << 25;
6871 break;
6872
6873 case R_PPC_REL14:
6874 case R_PPC_REL14_BRTAKEN:
6875 case R_PPC_REL14_BRNTAKEN:
6876 max_branch_offset = 1 << 15;
6877 break;
7fce784e 6878
d3e454b9
AM
6879 case R_PPC_ADDR16_HA:
6880 if (htab->params->pic_fixup > 0)
6881 break;
6882 continue;
6883
5446cbdf
AM
6884 default:
6885 continue;
6886 }
6887
6888 /* Get the value of the symbol referred to by the reloc. */
6889 h = NULL;
6890 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
25dbc73a 6891 {
5446cbdf
AM
6892 /* A local symbol. */
6893 Elf_Internal_Sym *isym;
6894
6895 /* Read this BFD's local symbols. */
25dbc73a 6896 if (isymbuf == NULL)
5446cbdf
AM
6897 {
6898 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6899 if (isymbuf == NULL)
6900 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6901 symtab_hdr->sh_info, 0,
6902 NULL, NULL, NULL);
6903 if (isymbuf == 0)
6904 goto error_return;
6905 }
6906 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6907 if (isym->st_shndx == SHN_UNDEF)
6908 tsec = bfd_und_section_ptr;
6909 else if (isym->st_shndx == SHN_ABS)
6910 tsec = bfd_abs_section_ptr;
6911 else if (isym->st_shndx == SHN_COMMON)
6912 tsec = bfd_com_section_ptr;
6913 else
6914 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6915
6916 toff = isym->st_value;
6917 sym_type = ELF_ST_TYPE (isym->st_info);
25dbc73a 6918 }
25dbc73a 6919 else
5446cbdf
AM
6920 {
6921 /* Global symbol handling. */
6922 unsigned long indx;
7fce784e 6923
5446cbdf
AM
6924 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6925 h = elf_sym_hashes (abfd)[indx];
7619e7c7 6926
5446cbdf
AM
6927 while (h->root.type == bfd_link_hash_indirect
6928 || h->root.type == bfd_link_hash_warning)
6929 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 6930
5446cbdf
AM
6931 if (h->root.type == bfd_link_hash_defined
6932 || h->root.type == bfd_link_hash_defweak)
6933 {
6934 tsec = h->root.u.def.section;
6935 toff = h->root.u.def.value;
6936 }
6937 else if (h->root.type == bfd_link_hash_undefined
6938 || h->root.type == bfd_link_hash_undefweak)
6939 {
6940 tsec = bfd_und_section_ptr;
0e1862bb 6941 toff = bfd_link_relocatable (link_info) ? indx : 0;
5446cbdf
AM
6942 }
6943 else
6944 continue;
6945
9f7552cf
AM
6946 /* If this branch is to __tls_get_addr then we may later
6947 optimise away the call. We won't be needing a long-
6948 branch stub in that case. */
0e1862bb 6949 if (bfd_link_executable (link_info)
9f7552cf
AM
6950 && h == htab->tls_get_addr
6951 && irel != internal_relocs)
6952 {
6953 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6954 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6955 unsigned int tls_mask = 0;
6956
6957 /* The previous reloc should be one of R_PPC_TLSGD or
6958 R_PPC_TLSLD, or for older object files, a reloc
6959 on the __tls_get_addr arg setup insn. Get tls
6960 mask bits from the symbol on that reloc. */
6961 if (t_symndx < symtab_hdr->sh_info)
6962 {
6963 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6964
6965 if (local_got_offsets != NULL)
6966 {
6967 struct plt_entry **local_plt = (struct plt_entry **)
6968 (local_got_offsets + symtab_hdr->sh_info);
6969 char *lgot_masks = (char *)
6970 (local_plt + symtab_hdr->sh_info);
6971 tls_mask = lgot_masks[t_symndx];
6972 }
6973 }
6974 else
6975 {
6976 struct elf_link_hash_entry *th
6977 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6978
6979 while (th->root.type == bfd_link_hash_indirect
6980 || th->root.type == bfd_link_hash_warning)
6981 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6982
6983 tls_mask
6984 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6985 }
6986
6987 /* The mask bits tell us if the call will be
6988 optimised away. */
6989 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6990 && (t_rtype == R_PPC_TLSGD
6991 || t_rtype == R_PPC_GOT_TLSGD16
6992 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6993 continue;
6994 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6995 && (t_rtype == R_PPC_TLSLD
6996 || t_rtype == R_PPC_GOT_TLSLD16
6997 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6998 continue;
6999 }
7000
5446cbdf
AM
7001 sym_type = h->type;
7002 }
7619e7c7 7003
d3e454b9
AM
7004 if (r_type == R_PPC_ADDR16_HA)
7005 {
7006 if (h != NULL
7007 && !h->def_regular
7008 && h->protected_def
7009 && ppc_elf_hash_entry (h)->has_addr16_ha
7010 && ppc_elf_hash_entry (h)->has_addr16_lo)
7011 picfixup_size += 12;
7012 continue;
7013 }
7014
5446cbdf
AM
7015 /* The condition here under which we call find_plt_ent must
7016 match that in relocate_section. If we call find_plt_ent here
7017 but not in relocate_section, or vice versa, then the branch
7018 destination used here may be incorrect. */
7019 plist = NULL;
7020 if (h != NULL)
25dbc73a 7021 {
5446cbdf
AM
7022 /* We know is_branch_reloc (r_type) is true. */
7023 if (h->type == STT_GNU_IFUNC
7024 || r_type == R_PPC_PLTREL24)
7025 plist = &h->plt.plist;
25dbc73a 7026 }
5446cbdf
AM
7027 else if (sym_type == STT_GNU_IFUNC
7028 && elf_local_got_offsets (abfd) != NULL)
c8a1f254 7029 {
5446cbdf
AM
7030 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7031 struct plt_entry **local_plt = (struct plt_entry **)
7032 (local_got_offsets + symtab_hdr->sh_info);
7033 plist = local_plt + ELF32_R_SYM (irel->r_info);
c8a1f254 7034 }
5446cbdf 7035 if (plist != NULL)
a9585d22 7036 {
5446cbdf
AM
7037 bfd_vma addend = 0;
7038 struct plt_entry *ent;
7039
0e1862bb 7040 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
5446cbdf
AM
7041 addend = irel->r_addend;
7042 ent = find_plt_ent (plist, got2, addend);
7043 if (ent != NULL)
a9585d22 7044 {
5446cbdf
AM
7045 if (htab->plt_type == PLT_NEW
7046 || h == NULL
7047 || !htab->elf.dynamic_sections_created
7048 || h->dynindx == -1)
7049 {
7050 tsec = htab->glink;
7051 toff = ent->glink_offset;
7052 }
7053 else
7054 {
7055 tsec = htab->plt;
7056 toff = ent->plt.offset;
7057 }
de972ffa
AM
7058 }
7059 }
de972ffa 7060
5446cbdf
AM
7061 /* If the branch and target are in the same section, you have
7062 no hope of adding stubs. We'll error out later should the
7063 branch overflow. */
7064 if (tsec == isec)
7065 continue;
25dbc73a 7066
5446cbdf
AM
7067 /* There probably isn't any reason to handle symbols in
7068 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7069 attribute for a code section, and we are only looking at
7070 branches. However, implement it correctly here as a
7071 reference for other target relax_section functions. */
7072 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7073 {
7074 /* At this stage in linking, no SEC_MERGE symbol has been
7075 adjusted, so all references to such symbols need to be
7076 passed through _bfd_merged_section_offset. (Later, in
7077 relocate_section, all SEC_MERGE symbols *except* for
7078 section symbols have been adjusted.)
7079
7080 gas may reduce relocations against symbols in SEC_MERGE
7081 sections to a relocation against the section symbol when
7082 the original addend was zero. When the reloc is against
7083 a section symbol we should include the addend in the
7084 offset passed to _bfd_merged_section_offset, since the
7085 location of interest is the original symbol. On the
7086 other hand, an access to "sym+addend" where "sym" is not
7087 a section symbol should not include the addend; Such an
7088 access is presumed to be an offset from "sym"; The
7089 location of interest is just "sym". */
7090 if (sym_type == STT_SECTION)
7091 toff += irel->r_addend;
7092
7093 toff
7094 = _bfd_merged_section_offset (abfd, &tsec,
7095 elf_section_data (tsec)->sec_info,
7096 toff);
7097
7098 if (sym_type != STT_SECTION)
7099 toff += irel->r_addend;
7100 }
7101 /* PLTREL24 addends are special. */
7102 else if (r_type != R_PPC_PLTREL24)
25dbc73a 7103 toff += irel->r_addend;
7619e7c7 7104
5446cbdf 7105 /* Attempted -shared link of non-pic code loses. */
0e1862bb 7106 if ((!bfd_link_relocatable (link_info)
5446cbdf
AM
7107 && tsec == bfd_und_section_ptr)
7108 || tsec->output_section == NULL
7109 || (tsec->owner != NULL
7110 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7111 continue;
7619e7c7 7112
5446cbdf 7113 roff = irel->r_offset;
7de713b9 7114
5446cbdf
AM
7115 /* If the branch is in range, no need to do anything. */
7116 if (tsec != bfd_und_section_ptr
0e1862bb 7117 && (!bfd_link_relocatable (link_info)
5446cbdf
AM
7118 /* A relocatable link may have sections moved during
7119 final link, so do not presume they remain in range. */
7120 || tsec->output_section == isec->output_section))
7121 {
7122 bfd_vma symaddr, reladdr;
7619e7c7 7123
5446cbdf
AM
7124 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7125 reladdr = isec->output_section->vma + isec->output_offset + roff;
7126 if (symaddr - reladdr + max_branch_offset
7127 < 2 * max_branch_offset)
7128 continue;
7129 }
01017ef8 7130
5446cbdf 7131 /* Look for an existing fixup to this address. */
d3e454b9 7132 for (f = branch_fixups; f ; f = f->next)
5446cbdf
AM
7133 if (f->tsec == tsec && f->toff == toff)
7134 break;
252b5132 7135
5446cbdf
AM
7136 if (f == NULL)
7137 {
7138 size_t size;
7139 unsigned long stub_rtype;
25dbc73a 7140
5446cbdf
AM
7141 val = trampoff - roff;
7142 if (val >= max_branch_offset)
7143 /* Oh dear, we can't reach a trampoline. Don't try to add
7144 one. We'll report an error later. */
7145 continue;
252b5132 7146
0e1862bb 7147 if (bfd_link_pic (link_info))
5446cbdf
AM
7148 {
7149 size = 4 * ARRAY_SIZE (shared_stub_entry);
7150 insn_offset = 12;
7151 }
7152 else
7153 {
7154 size = 4 * ARRAY_SIZE (stub_entry);
7155 insn_offset = 0;
7156 }
7157 stub_rtype = R_PPC_RELAX;
7158 if (tsec == htab->plt
7159 || tsec == htab->glink)
7160 {
7161 stub_rtype = R_PPC_RELAX_PLT;
7162 if (r_type == R_PPC_PLTREL24)
7163 stub_rtype = R_PPC_RELAX_PLTREL24;
7164 }
252b5132 7165
5446cbdf
AM
7166 /* Hijack the old relocation. Since we need two
7167 relocations for this use a "composite" reloc. */
7168 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7169 stub_rtype);
7170 irel->r_offset = trampoff + insn_offset;
7171 if (r_type == R_PPC_PLTREL24
7172 && stub_rtype != R_PPC_RELAX_PLTREL24)
7173 irel->r_addend = 0;
7174
7175 /* Record the fixup so we don't do it again this section. */
7176 f = bfd_malloc (sizeof (*f));
d3e454b9 7177 f->next = branch_fixups;
5446cbdf
AM
7178 f->tsec = tsec;
7179 f->toff = toff;
7180 f->trampoff = trampoff;
d3e454b9 7181 branch_fixups = f;
5446cbdf
AM
7182
7183 trampoff += size;
7184 changes++;
25dbc73a
AM
7185 }
7186 else
7187 {
5446cbdf
AM
7188 val = f->trampoff - roff;
7189 if (val >= max_branch_offset)
7190 continue;
252b5132 7191
5446cbdf
AM
7192 /* Nop out the reloc, since we're finalizing things here. */
7193 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7194 }
252b5132 7195
5446cbdf
AM
7196 /* Get the section contents. */
7197 if (contents == NULL)
25dbc73a 7198 {
5446cbdf
AM
7199 /* Get cached copy if it exists. */
7200 if (elf_section_data (isec)->this_hdr.contents != NULL)
7201 contents = elf_section_data (isec)->this_hdr.contents;
25dbc73a 7202 /* Go get them off disk. */
5446cbdf 7203 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
25dbc73a
AM
7204 goto error_return;
7205 }
252b5132 7206
5446cbdf
AM
7207 /* Fix up the existing branch to hit the trampoline. */
7208 hit_addr = contents + roff;
7209 switch (r_type)
7210 {
7211 case R_PPC_REL24:
7212 case R_PPC_LOCAL24PC:
7213 case R_PPC_PLTREL24:
7214 t0 = bfd_get_32 (abfd, hit_addr);
7215 t0 &= ~0x3fffffc;
7216 t0 |= val & 0x3fffffc;
7217 bfd_put_32 (abfd, t0, hit_addr);
7218 break;
252b5132 7219
5446cbdf
AM
7220 case R_PPC_REL14:
7221 case R_PPC_REL14_BRTAKEN:
7222 case R_PPC_REL14_BRNTAKEN:
7223 t0 = bfd_get_32 (abfd, hit_addr);
7224 t0 &= ~0xfffc;
7225 t0 |= val & 0xfffc;
7226 bfd_put_32 (abfd, t0, hit_addr);
7227 break;
7228 }
25dbc73a 7229 }
252b5132 7230
d3e454b9 7231 while (branch_fixups != NULL)
25dbc73a 7232 {
d3e454b9
AM
7233 struct one_branch_fixup *f = branch_fixups;
7234 branch_fixups = branch_fixups->next;
25dbc73a
AM
7235 free (f);
7236 }
5446cbdf 7237 }
252b5132 7238
5446cbdf
AM
7239 workaround_change = FALSE;
7240 newsize = trampoff;
795bc6b3 7241 if (htab->params->ppc476_workaround
0e1862bb 7242 && (!bfd_link_relocatable (link_info)
795bc6b3 7243 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
5446cbdf
AM
7244 {
7245 bfd_vma addr, end_addr;
7246 unsigned int crossings;
795bc6b3 7247 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf
AM
7248
7249 addr = isec->output_section->vma + isec->output_offset;
6128f9cf 7250 end_addr = addr + trampoff;
5446cbdf 7251 addr &= -pagesize;
795bc6b3 7252 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
5446cbdf
AM
7253 if (crossings != 0)
7254 {
7255 /* Keep space aligned, to ensure the patch code itself does
7256 not cross a page. Don't decrease size calculated on a
7257 previous pass as otherwise we might never settle on a layout. */
1e269e9b 7258 newsize = 15 - ((end_addr - 1) & 15);
5446cbdf
AM
7259 newsize += crossings * 16;
7260 if (relax_info->workaround_size < newsize)
7261 {
7262 relax_info->workaround_size = newsize;
7263 workaround_change = TRUE;
5446cbdf
AM
7264 }
7265 /* Ensure relocate_section is called. */
7266 isec->flags |= SEC_RELOC;
7267 }
7268 newsize = trampoff + relax_info->workaround_size;
7269 }
7270
d3e454b9
AM
7271 if (htab->params->pic_fixup > 0)
7272 {
7273 picfixup_size -= relax_info->picfixup_size;
7274 if (picfixup_size != 0)
7275 relax_info->picfixup_size += picfixup_size;
7276 newsize += relax_info->picfixup_size;
7277 }
7278
7279 if (changes != 0 || picfixup_size != 0 || workaround_change)
5446cbdf
AM
7280 isec->size = newsize;
7281
25dbc73a
AM
7282 if (isymbuf != NULL
7283 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 7284 {
25dbc73a
AM
7285 if (! link_info->keep_memory)
7286 free (isymbuf);
252b5132 7287 else
25dbc73a
AM
7288 {
7289 /* Cache the symbols for elf_link_input_bfd. */
7290 symtab_hdr->contents = (unsigned char *) isymbuf;
7291 }
252b5132
RH
7292 }
7293
25dbc73a
AM
7294 if (contents != NULL
7295 && elf_section_data (isec)->this_hdr.contents != contents)
7296 {
53291d1f 7297 if (!changes && !link_info->keep_memory)
25dbc73a
AM
7298 free (contents);
7299 else
7300 {
7301 /* Cache the section contents for elf_link_input_bfd. */
7302 elf_section_data (isec)->this_hdr.contents = contents;
7303 }
7304 }
252b5132 7305
d3e454b9 7306 changes += picfixup_size;
9bc4e62b 7307 if (changes != 0)
25dbc73a 7308 {
9bc4e62b
NS
7309 /* Append sufficient NOP relocs so we can write out relocation
7310 information for the trampolines. */
d4730f92 7311 Elf_Internal_Shdr *rel_hdr;
9bc4e62b
NS
7312 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7313 * sizeof (*new_relocs));
7314 unsigned ix;
5b914448 7315
9bc4e62b
NS
7316 if (!new_relocs)
7317 goto error_return;
7318 memcpy (new_relocs, internal_relocs,
7319 isec->reloc_count * sizeof (*new_relocs));
7320 for (ix = changes; ix--;)
7321 {
7322 irel = new_relocs + ix + isec->reloc_count;
7323
7324 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7325 }
7326 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 7327 free (internal_relocs);
9bc4e62b
NS
7328 elf_section_data (isec)->relocs = new_relocs;
7329 isec->reloc_count += changes;
d4730f92
BS
7330 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7331 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
25dbc73a 7332 }
5446cbdf
AM
7333 else if (internal_relocs != NULL
7334 && elf_section_data (isec)->relocs != internal_relocs)
9bc4e62b 7335 free (internal_relocs);
252b5132 7336
5446cbdf 7337 *again = changes != 0 || workaround_change;
b34976b6 7338 return TRUE;
25dbc73a
AM
7339
7340 error_return:
d3e454b9 7341 while (branch_fixups != NULL)
5446cbdf 7342 {
d3e454b9
AM
7343 struct one_branch_fixup *f = branch_fixups;
7344 branch_fixups = branch_fixups->next;
5446cbdf
AM
7345 free (f);
7346 }
25dbc73a
AM
7347 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7348 free (isymbuf);
7349 if (contents != NULL
7350 && elf_section_data (isec)->this_hdr.contents != contents)
7351 free (contents);
7352 if (internal_relocs != NULL
7353 && elf_section_data (isec)->relocs != internal_relocs)
7354 free (internal_relocs);
7355 return FALSE;
252b5132 7356}
252b5132 7357\f
8a696751
AM
7358/* What to do when ld finds relocations against symbols defined in
7359 discarded sections. */
7360
7361static unsigned int
7362ppc_elf_action_discarded (asection *sec)
7363{
7364 if (strcmp (".fixup", sec->name) == 0)
7365 return 0;
7366
7367 if (strcmp (".got2", sec->name) == 0)
7368 return 0;
7369
7370 return _bfd_elf_default_action_discarded (sec);
7371}
c9a2f333 7372\f
25dbc73a 7373/* Fill in the address for a pointer generated in a linker section. */
252b5132 7374
25dbc73a 7375static bfd_vma
76750a2f 7376elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
7377 elf_linker_section_t *lsect,
7378 struct elf_link_hash_entry *h,
7379 bfd_vma relocation,
2bb04cf2 7380 const Elf_Internal_Rela *rel)
25dbc73a
AM
7381{
7382 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 7383
25dbc73a 7384 BFD_ASSERT (lsect != NULL);
252b5132 7385
25dbc73a 7386 if (h != NULL)
252b5132 7387 {
25dbc73a
AM
7388 /* Handle global symbol. */
7389 struct ppc_elf_link_hash_entry *eh;
252b5132 7390
25dbc73a 7391 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
7392 BFD_ASSERT (eh->elf.def_regular);
7393 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
7394 }
7395 else
7396 {
7397 /* Handle local symbol. */
7398 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 7399
0c8d6e5c 7400 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 7401 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
7402 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7403 }
252b5132 7404
76750a2f
AM
7405 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7406 rel->r_addend,
7407 lsect);
7408 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 7409
76750a2f
AM
7410 /* Offset will always be a multiple of four, so use the bottom bit
7411 as a "written" flag. */
7412 if ((linker_section_ptr->offset & 1) == 0)
7413 {
7414 bfd_put_32 (lsect->section->owner,
7415 relocation + linker_section_ptr->addend,
7416 lsect->section->contents + linker_section_ptr->offset);
7417 linker_section_ptr->offset += 1;
252b5132
RH
7418 }
7419
bd6c6e2b
AM
7420 relocation = (lsect->section->output_section->vma
7421 + lsect->section->output_offset
76750a2f 7422 + linker_section_ptr->offset - 1
bd6c6e2b 7423 - SYM_VAL (lsect->sym));
252b5132 7424
25dbc73a
AM
7425#ifdef DEBUG
7426 fprintf (stderr,
7427 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7428 lsect->name, (long) relocation, (long) relocation);
7429#endif
252b5132 7430
bd6c6e2b 7431 return relocation;
252b5132 7432}
25dbc73a 7433
e054468f
AM
7434#define PPC_LO(v) ((v) & 0xffff)
7435#define PPC_HI(v) (((v) >> 16) & 0xffff)
7436#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7437
7438static void
a7f2871e 7439write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
e054468f
AM
7440 struct bfd_link_info *info)
7441{
7442 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7443 bfd *output_bfd = info->output_bfd;
7444 bfd_vma plt;
e054468f
AM
7445
7446 plt = ((ent->plt.offset & ~1)
7447 + plt_sec->output_section->vma
7448 + plt_sec->output_offset);
e054468f 7449
0e1862bb 7450 if (bfd_link_pic (info))
e054468f
AM
7451 {
7452 bfd_vma got = 0;
7453
7454 if (ent->addend >= 32768)
7455 got = (ent->addend
7456 + ent->sec->output_section->vma
7457 + ent->sec->output_offset);
7458 else if (htab->elf.hgot != NULL)
7459 got = SYM_VAL (htab->elf.hgot);
7460
7461 plt -= got;
7462
7463 if (plt + 0x8000 < 0x10000)
7464 {
7465 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7466 p += 4;
7467 bfd_put_32 (output_bfd, MTCTR_11, p);
7468 p += 4;
7469 bfd_put_32 (output_bfd, BCTR, p);
7470 p += 4;
da3a2088 7471 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
e054468f
AM
7472 p += 4;
7473 }
7474 else
7475 {
7476 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7477 p += 4;
7478 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7479 p += 4;
7480 bfd_put_32 (output_bfd, MTCTR_11, p);
7481 p += 4;
7482 bfd_put_32 (output_bfd, BCTR, p);
7483 p += 4;
7484 }
7485 }
7486 else
7487 {
7488 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7489 p += 4;
7490 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7491 p += 4;
7492 bfd_put_32 (output_bfd, MTCTR_11, p);
7493 p += 4;
7494 bfd_put_32 (output_bfd, BCTR, p);
7495 p += 4;
7496 }
7497}
7498
bd6c6e2b
AM
7499/* Return true if symbol is defined statically. */
7500
7501static bfd_boolean
7502is_static_defined (struct elf_link_hash_entry *h)
7503{
7504 return ((h->root.type == bfd_link_hash_defined
7505 || h->root.type == bfd_link_hash_defweak)
7506 && h->root.u.def.section != NULL
7507 && h->root.u.def.section->output_section != NULL);
7508}
7509
2d0f3896
AM
7510/* If INSN is an opcode that may be used with an @tls operand, return
7511 the transformed insn for TLS optimisation, otherwise return 0. If
7512 REG is non-zero only match an insn with RB or RA equal to REG. */
7513
7514unsigned int
7515_bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7516{
7517 unsigned int rtra;
7518
7519 if ((insn & (0x3f << 26)) != 31 << 26)
7520 return 0;
7521
7522 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7523 rtra = insn & ((1 << 26) - (1 << 16));
7524 else if (((insn >> 16) & 0x1f) == reg)
7525 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7526 else
7527 return 0;
7528
7529 if ((insn & (0x3ff << 1)) == 266 << 1)
7530 /* add -> addi. */
7531 insn = 14 << 26;
7532 else if ((insn & (0x1f << 1)) == 23 << 1
7533 && ((insn & (0x1f << 6)) < 14 << 6
7534 || ((insn & (0x1f << 6)) >= 16 << 6
7535 && (insn & (0x1f << 6)) < 24 << 6)))
7536 /* load and store indexed -> dform. */
7537 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7538 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7539 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7540 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7541 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7542 /* lwax -> lwa. */
7543 insn = (58 << 26) | 2;
7544 else
7545 return 0;
7546 insn |= rtra;
7547 return insn;
7548}
7549
766bc656
AM
7550/* If INSN is an opcode that may be used with an @tprel operand, return
7551 the transformed insn for an undefined weak symbol, ie. with the
7552 thread pointer REG operand removed. Otherwise return 0. */
7553
7554unsigned int
7555_bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7556{
7557 if ((insn & (0x1f << 16)) == reg << 16
7558 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7559 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7560 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7561 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7562 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7563 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7564 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7565 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7566 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7567 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7568 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7569 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7570 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7571 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7572 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7573 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7574 && (insn & 3) != 1)
7575 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7576 && ((insn & 3) == 0 || (insn & 3) == 3))))
7577 {
7578 insn &= ~(0x1f << 16);
7579 }
7580 else if ((insn & (0x1f << 21)) == reg << 21
7581 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7582 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7583 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7584 {
7585 insn &= ~(0x1f << 21);
7586 insn |= (insn & (0x1f << 16)) << 5;
7587 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7588 insn -= 2 >> 26; /* convert to ori,oris */
7589 }
7590 else
7591 insn = 0;
7592 return insn;
7593}
7594
1fe532cf
AM
7595static bfd_boolean
7596is_insn_ds_form (unsigned int insn)
7597{
7598 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7599 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7600 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7601 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7602}
7603
7604static bfd_boolean
7605is_insn_dq_form (unsigned int insn)
7606{
7607 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7608}
7609
252b5132
RH
7610/* The RELOCATE_SECTION function is called by the ELF backend linker
7611 to handle the relocations for a section.
7612
7613 The relocs are always passed as Rela structures; if the section
7614 actually uses Rel structures, the r_addend field will always be
7615 zero.
7616
7617 This function is responsible for adjust the section contents as
7618 necessary, and (if using Rela relocs and generating a
1049f94e 7619 relocatable output file) adjusting the reloc addend as
252b5132
RH
7620 necessary.
7621
7622 This function does not have to worry about setting the reloc
7623 address or the reloc symbol index.
7624
7625 LOCAL_SYMS is a pointer to the swapped in local symbols.
7626
7627 LOCAL_SECTIONS is an array giving the section in the input file
7628 corresponding to the st_shndx field of each local symbol.
7629
7630 The global hash table entry for the global symbols can be found
7631 via elf_sym_hashes (input_bfd).
7632
1049f94e 7633 When generating relocatable output, this function must handle
252b5132
RH
7634 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7635 going to be the section symbol corresponding to the output
7636 section, which means that the addend must be adjusted
7637 accordingly. */
7638
b34976b6 7639static bfd_boolean
55fd94b0
AM
7640ppc_elf_relocate_section (bfd *output_bfd,
7641 struct bfd_link_info *info,
7642 bfd *input_bfd,
7643 asection *input_section,
7644 bfd_byte *contents,
7645 Elf_Internal_Rela *relocs,
7646 Elf_Internal_Sym *local_syms,
7647 asection **local_sections)
252b5132 7648{
7619e7c7
AM
7649 Elf_Internal_Shdr *symtab_hdr;
7650 struct elf_link_hash_entry **sym_hashes;
7651 struct ppc_elf_link_hash_table *htab;
7652 Elf_Internal_Rela *rel;
c316a17c 7653 Elf_Internal_Rela *wrel;
7619e7c7
AM
7654 Elf_Internal_Rela *relend;
7655 Elf_Internal_Rela outrel;
f95f8542 7656 asection *got2;
252b5132 7657 bfd_vma *local_got_offsets;
b34976b6 7658 bfd_boolean ret = TRUE;
4fe5ca5b 7659 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 7660 bfd_boolean is_vxworks_tls;
d3e454b9
AM
7661 unsigned int picfixup_size = 0;
7662 struct ppc_elf_relax_info *relax_info = NULL;
b34976b6 7663
252b5132 7664#ifdef DEBUG
d003868e
AM
7665 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7666 "%ld relocations%s",
7667 input_bfd, input_section,
7668 (long) input_section->reloc_count,
0e1862bb 7669 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
252b5132
RH
7670#endif
7671
a6aa5195
AM
7672 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7673
e47cd125 7674 /* Initialize howto table if not already done. */
8da6118f 7675 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
7676 ppc_elf_howto_init ();
7677
7619e7c7 7678 htab = ppc_elf_hash_table (info);
252b5132 7679 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 7680 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 7681 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
7682 /* We have to handle relocations in vxworks .tls_vars sections
7683 specially, because the dynamic loader is 'weird'. */
0e1862bb 7684 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
3348747a
NS
7685 && !strcmp (input_section->output_section->name,
7686 ".tls_vars"));
d3e454b9
AM
7687 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7688 relax_info = elf_section_data (input_section)->sec_info;
c316a17c 7689 rel = wrel = relocs;
7619e7c7 7690 relend = relocs + input_section->reloc_count;
c316a17c 7691 for (; rel < relend; wrel++, rel++)
252b5132 7692 {
7619e7c7
AM
7693 enum elf_ppc_reloc_type r_type;
7694 bfd_vma addend;
7695 bfd_reloc_status_type r;
7696 Elf_Internal_Sym *sym;
7697 asection *sec;
7698 struct elf_link_hash_entry *h;
7699 const char *sym_name;
252b5132
RH
7700 reloc_howto_type *howto;
7701 unsigned long r_symndx;
7702 bfd_vma relocation;
91d6fa6a 7703 bfd_vma branch_bit, from;
7619e7c7
AM
7704 bfd_boolean unresolved_reloc;
7705 bfd_boolean warned;
7706 unsigned int tls_type, tls_mask, tls_gd;
e054468f 7707 struct plt_entry **ifunc;
86c95733 7708 struct reloc_howto_struct alt_howto;
7619e7c7 7709
c316a17c 7710 again:
55fd94b0
AM
7711 r_type = ELF32_R_TYPE (rel->r_info);
7712 sym = NULL;
7713 sec = NULL;
7714 h = NULL;
7619e7c7
AM
7715 unresolved_reloc = FALSE;
7716 warned = FALSE;
252b5132 7717 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 7718
252b5132
RH
7719 if (r_symndx < symtab_hdr->sh_info)
7720 {
7721 sym = local_syms + r_symndx;
7722 sec = local_sections[r_symndx];
26c61ae5 7723 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 7724
8517fae7 7725 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
7726 }
7727 else
7728 {
62d887d4
L
7729 bfd_boolean ignored;
7730
b2a8e766
AM
7731 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7732 r_symndx, symtab_hdr, sym_hashes,
7733 h, sec, relocation,
62d887d4 7734 unresolved_reloc, warned, ignored);
9abc968f 7735
252b5132 7736 sym_name = h->root.root.string;
7619e7c7
AM
7737 }
7738
dbaa2011 7739 if (sec != NULL && discarded_section (sec))
ab96bf03
AM
7740 {
7741 /* For relocs against symbols from removed linkonce sections,
7742 or sections discarded by a linker script, we just want the
7743 section contents zeroed. Avoid any special processing. */
7744 howto = NULL;
7745 if (r_type < R_PPC_max)
7746 howto = ppc_elf_howto_table[r_type];
c316a17c
AM
7747
7748 _bfd_clear_contents (howto, input_bfd, input_section,
7749 contents + rel->r_offset);
7750 wrel->r_offset = rel->r_offset;
7751 wrel->r_info = 0;
7752 wrel->r_addend = 0;
7753
7754 /* For ld -r, remove relocations in debug sections against
7755 sections defined in discarded sections. Not done for
7756 non-debug to preserve relocs in .eh_frame which the
7757 eh_frame editing code expects to be present. */
7758 if (bfd_link_relocatable (info)
7759 && (input_section->flags & SEC_DEBUGGING))
7760 wrel--;
7761
7762 continue;
ab96bf03
AM
7763 }
7764
0e1862bb 7765 if (bfd_link_relocatable (info))
ab96bf03
AM
7766 {
7767 if (got2 != NULL
7768 && r_type == R_PPC_PLTREL24
f75e0e33 7769 && rel->r_addend != 0)
ab96bf03
AM
7770 {
7771 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7772 addend specifies the GOT pointer offset within .got2. */
7773 rel->r_addend += got2->output_offset;
7774 }
53291d1f
AM
7775 if (r_type != R_PPC_RELAX_PLT
7776 && r_type != R_PPC_RELAX_PLTREL24
7777 && r_type != R_PPC_RELAX)
c316a17c 7778 goto copy_reloc;
ab96bf03
AM
7779 }
7780
7619e7c7
AM
7781 /* TLS optimizations. Replace instruction sequences and relocs
7782 based on information we collected in tls_optimize. We edit
7783 RELOCS so that --emit-relocs will output something sensible
7784 for the final instruction stream. */
7785 tls_mask = 0;
7786 tls_gd = 0;
727fc41e
AM
7787 if (h != NULL)
7788 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7789 else if (local_got_offsets != NULL)
7619e7c7 7790 {
e054468f 7791 struct plt_entry **local_plt;
727fc41e 7792 char *lgot_masks;
e054468f
AM
7793 local_plt
7794 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7795 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
727fc41e 7796 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM
7797 }
7798
7799 /* Ensure reloc mapping code below stays sane. */
7800 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7801 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7802 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7803 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7804 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7805 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7806 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7807 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7808 abort ();
7809 switch (r_type)
7810 {
7811 default:
7812 break;
7813
7814 case R_PPC_GOT_TPREL16:
7815 case R_PPC_GOT_TPREL16_LO:
e054468f 7816 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7817 && (tls_mask & TLS_TPREL) == 0)
7818 {
7819 bfd_vma insn;
91d6fa6a 7820
c316a17c
AM
7821 insn = bfd_get_32 (output_bfd,
7822 contents + rel->r_offset - d_offset);
7619e7c7
AM
7823 insn &= 31 << 21;
7824 insn |= 0x3c020000; /* addis 0,2,0 */
c316a17c
AM
7825 bfd_put_32 (output_bfd, insn,
7826 contents + rel->r_offset - d_offset);
7619e7c7
AM
7827 r_type = R_PPC_TPREL16_HA;
7828 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7829 }
7830 break;
7831
7832 case R_PPC_TLS:
e054468f 7833 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7834 && (tls_mask & TLS_TPREL) == 0)
7835 {
2d0f3896
AM
7836 bfd_vma insn;
7837
7619e7c7 7838 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM
7839 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7840 if (insn == 0)
7619e7c7 7841 abort ();
7619e7c7
AM
7842 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7843 r_type = R_PPC_TPREL16_LO;
7844 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 7845
7619e7c7 7846 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
7847 PPC_TPREL16_LO which is at low-order half-word. */
7848 rel->r_offset += d_offset;
7619e7c7
AM
7849 }
7850 break;
7851
7852 case R_PPC_GOT_TLSGD16_HI:
7853 case R_PPC_GOT_TLSGD16_HA:
7854 tls_gd = TLS_TPRELGD;
e054468f 7855 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7619e7c7
AM
7856 goto tls_gdld_hi;
7857 break;
7858
7859 case R_PPC_GOT_TLSLD16_HI:
7860 case R_PPC_GOT_TLSLD16_HA:
e054468f 7861 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7
AM
7862 {
7863 tls_gdld_hi:
7864 if ((tls_mask & tls_gd) != 0)
7865 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7866 + R_PPC_GOT_TPREL16);
7867 else
7868 {
4fe5ca5b 7869 rel->r_offset -= d_offset;
b86ac8e3 7870 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7619e7c7
AM
7871 r_type = R_PPC_NONE;
7872 }
7873 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7874 }
7875 break;
7876
7877 case R_PPC_GOT_TLSGD16:
7878 case R_PPC_GOT_TLSGD16_LO:
7879 tls_gd = TLS_TPRELGD;
e054468f 7880 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 7881 goto tls_ldgd_opt;
7619e7c7
AM
7882 break;
7883
7884 case R_PPC_GOT_TLSLD16:
7885 case R_PPC_GOT_TLSLD16_LO:
e054468f 7886 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7 7887 {
3a71aa26 7888 unsigned int insn1, insn2;
b7fcf6f6 7889 bfd_vma offset;
7619e7c7 7890
b7fcf6f6 7891 tls_ldgd_opt:
727fc41e
AM
7892 offset = (bfd_vma) -1;
7893 /* If not using the newer R_PPC_TLSGD/LD to mark
7894 __tls_get_addr calls, we must trust that the call
7895 stays with its arg setup insns, ie. that the next
7896 reloc is the __tls_get_addr call associated with
7897 the current reloc. Edit both insns. */
7898 if (input_section->has_tls_get_addr_call
7899 && rel + 1 < relend
7900 && branch_reloc_hash_match (input_bfd, rel + 1,
7901 htab->tls_get_addr))
7902 offset = rel[1].r_offset;
b86ac8e3
AM
7903 /* We read the low GOT_TLS insn because we need to keep
7904 the destination reg. It may be something other than
7905 the usual r3, and moved to r3 before the call by
7906 intervening code. */
7907 insn1 = bfd_get_32 (output_bfd,
7908 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
7909 if ((tls_mask & tls_gd) != 0)
7910 {
7911 /* IE */
b86ac8e3 7912 insn1 &= (0x1f << 21) | (0x1f << 16);
b7fcf6f6 7913 insn1 |= 32 << 26; /* lwz */
727fc41e
AM
7914 if (offset != (bfd_vma) -1)
7915 {
f58d5a2d 7916 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
7917 insn2 = 0x7c631214; /* add 3,3,2 */
7918 bfd_put_32 (output_bfd, insn2, contents + offset);
7919 }
b7fcf6f6
AM
7920 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7921 + R_PPC_GOT_TPREL16);
7922 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7923 }
7924 else
7925 {
7926 /* LE */
b86ac8e3
AM
7927 insn1 &= 0x1f << 21;
7928 insn1 |= 0x3c020000; /* addis r,2,0 */
7619e7c7
AM
7929 if (tls_gd == 0)
7930 {
b7fcf6f6 7931 /* Was an LD reloc. */
1d483afe
AM
7932 for (r_symndx = 0;
7933 r_symndx < symtab_hdr->sh_info;
7934 r_symndx++)
7935 if (local_sections[r_symndx] == sec)
7936 break;
7937 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 7938 r_symndx = STN_UNDEF;
b7fcf6f6 7939 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 7940 if (r_symndx != STN_UNDEF)
1d483afe
AM
7941 rel->r_addend -= (local_syms[r_symndx].st_value
7942 + sec->output_offset
7943 + sec->output_section->vma);
7619e7c7 7944 }
b7fcf6f6
AM
7945 r_type = R_PPC_TPREL16_HA;
7946 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM
7947 if (offset != (bfd_vma) -1)
7948 {
7949 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7950 rel[1].r_offset = offset + d_offset;
7951 rel[1].r_addend = rel->r_addend;
7952 insn2 = 0x38630000; /* addi 3,3,0 */
7953 bfd_put_32 (output_bfd, insn2, contents + offset);
7954 }
b7fcf6f6
AM
7955 }
7956 bfd_put_32 (output_bfd, insn1,
7957 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
7958 if (tls_gd == 0)
7959 {
7960 /* We changed the symbol on an LD reloc. Start over
7961 in order to get h, sym, sec etc. right. */
c316a17c 7962 goto again;
7619e7c7 7963 }
252b5132 7964 }
7619e7c7 7965 break;
727fc41e
AM
7966
7967 case R_PPC_TLSGD:
e054468f 7968 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
727fc41e
AM
7969 {
7970 unsigned int insn2;
7971 bfd_vma offset = rel->r_offset;
7972
7973 if ((tls_mask & TLS_TPRELGD) != 0)
7974 {
7975 /* IE */
7976 r_type = R_PPC_NONE;
7977 insn2 = 0x7c631214; /* add 3,3,2 */
7978 }
7979 else
7980 {
7981 /* LE */
7982 r_type = R_PPC_TPREL16_LO;
7983 rel->r_offset += d_offset;
7984 insn2 = 0x38630000; /* addi 3,3,0 */
7985 }
7986 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7987 bfd_put_32 (output_bfd, insn2, contents + offset);
7988 /* Zap the reloc on the _tls_get_addr call too. */
7989 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 7990 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
7991 }
7992 break;
7993
7994 case R_PPC_TLSLD:
e054468f 7995 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
727fc41e
AM
7996 {
7997 unsigned int insn2;
7998
7999 for (r_symndx = 0;
8000 r_symndx < symtab_hdr->sh_info;
8001 r_symndx++)
8002 if (local_sections[r_symndx] == sec)
8003 break;
8004 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 8005 r_symndx = STN_UNDEF;
727fc41e 8006 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 8007 if (r_symndx != STN_UNDEF)
727fc41e
AM
8008 rel->r_addend -= (local_syms[r_symndx].st_value
8009 + sec->output_offset
8010 + sec->output_section->vma);
8011
8012 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8013 rel->r_offset += d_offset;
8014 insn2 = 0x38630000; /* addi 3,3,0 */
8015 bfd_put_32 (output_bfd, insn2,
8016 contents + rel->r_offset - d_offset);
8017 /* Zap the reloc on the _tls_get_addr call too. */
8018 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
f58d5a2d 8019 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
c316a17c 8020 goto again;
727fc41e
AM
8021 }
8022 break;
7619e7c7
AM
8023 }
8024
8025 /* Handle other relocations that tweak non-addend part of insn. */
8026 branch_bit = 0;
8027 switch (r_type)
8028 {
8029 default:
8030 break;
8031
8032 /* Branch taken prediction relocations. */
8033 case R_PPC_ADDR14_BRTAKEN:
8034 case R_PPC_REL14_BRTAKEN:
8035 branch_bit = BRANCH_PREDICT_BIT;
8036 /* Fall thru */
8037
4cc11e76 8038 /* Branch not taken prediction relocations. */
7619e7c7
AM
8039 case R_PPC_ADDR14_BRNTAKEN:
8040 case R_PPC_REL14_BRNTAKEN:
91d6fa6a
NC
8041 {
8042 bfd_vma insn;
7619e7c7 8043
91d6fa6a
NC
8044 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8045 insn &= ~BRANCH_PREDICT_BIT;
8046 insn |= branch_bit;
7619e7c7 8047
91d6fa6a
NC
8048 from = (rel->r_offset
8049 + input_section->output_offset
8050 + input_section->output_section->vma);
7619e7c7 8051
91d6fa6a
NC
8052 /* Invert 'y' bit if not the default. */
8053 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8054 insn ^= BRANCH_PREDICT_BIT;
8055
8056 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8057 break;
8058 }
252b5132
RH
8059 }
8060
d3e454b9
AM
8061 if (ELIMINATE_COPY_RELOCS
8062 && h != NULL
8063 && !h->def_regular
8064 && h->protected_def
8065 && ppc_elf_hash_entry (h)->has_addr16_ha
8066 && ppc_elf_hash_entry (h)->has_addr16_lo
8067 && htab->params->pic_fixup > 0)
8068 {
8069 /* Convert lis;addi or lis;load/store accessing a protected
8070 variable defined in a shared library to PIC. */
8071 unsigned int insn;
8072
8073 if (r_type == R_PPC_ADDR16_HA)
8074 {
8075 insn = bfd_get_32 (output_bfd,
8076 contents + rel->r_offset - d_offset);
8077 if ((insn & (0x3f << 26)) == (15u << 26)
8078 && (insn & (0x1f << 16)) == 0 /* lis */)
8079 {
8080 bfd_byte *p;
8081 bfd_vma off;
8082 bfd_vma got_addr;
8083
8084 p = (contents + input_section->size
8085 - relax_info->workaround_size
8086 - relax_info->picfixup_size
8087 + picfixup_size);
8088 off = (p - contents) - (rel->r_offset - d_offset);
8089 if (off > 0x1fffffc || (off & 3) != 0)
8090 info->callbacks->einfo
8091 (_("%P: %H: fixup branch overflow\n"),
8092 input_bfd, input_section, rel->r_offset);
8093
8094 bfd_put_32 (output_bfd, B | off,
8095 contents + rel->r_offset - d_offset);
8096 got_addr = (htab->got->output_section->vma
8097 + htab->got->output_offset
8098 + (h->got.offset & ~1));
c316a17c
AM
8099 wrel->r_offset = (p - contents) + d_offset;
8100 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8101 wrel->r_addend = got_addr;
d3e454b9
AM
8102 insn &= ~0xffff;
8103 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8104 bfd_put_32 (output_bfd, insn, p);
8105
8106 /* Convert lis to lwz, loading address from GOT. */
8107 insn &= ~0xffff;
8108 insn ^= (32u ^ 15u) << 26;
8109 insn |= (insn & (0x1f << 21)) >> 5;
8110 insn |= got_addr & 0xffff;
8111 bfd_put_32 (output_bfd, insn, p + 4);
8112
8113 bfd_put_32 (output_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8114 picfixup_size += 12;
8115
8116 /* Use one of the spare relocs, so --emit-relocs
8117 output is reasonable. */
8118 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
c316a17c
AM
8119 wrel++, rel++;
8120 rel->r_offset = wrel[-1].r_offset + 4;
d3e454b9 8121 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
c316a17c 8122 rel->r_addend = wrel[-1].r_addend;
d3e454b9
AM
8123
8124 /* Continue on as if we had a got reloc, to output
8125 dynamic reloc. */
8126 r_type = R_PPC_GOT16_LO;
8127 }
8128 else
8129 info->callbacks->einfo
8130 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8131 input_bfd, input_section, rel->r_offset,
8132 "R_PPC_ADDR16_HA", insn);
8133 }
8134 else if (r_type == R_PPC_ADDR16_LO)
8135 {
8136 insn = bfd_get_32 (output_bfd,
8137 contents + rel->r_offset - d_offset);
8138 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8139 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8140 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8141 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8142 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8143 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8144 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8145 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8146 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8147 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8148 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8149 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8150 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8151 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8152 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8153 && (insn & 3) != 1)
8154 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8155 && ((insn & 3) == 0 || (insn & 3) == 3)))
8156 {
8157 /* Arrange to apply the reloc addend, if any. */
8158 relocation = 0;
8159 unresolved_reloc = FALSE;
8160 rel->r_info = ELF32_R_INFO (0, r_type);
8161 }
8162 else
8163 info->callbacks->einfo
8164 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8165 input_bfd, input_section, rel->r_offset,
8166 "R_PPC_ADDR16_LO", insn);
8167 }
8168 }
8169
e054468f 8170 ifunc = NULL;
25f23106 8171 if (!htab->is_vxworks)
e054468f 8172 {
de972ffa
AM
8173 struct plt_entry *ent;
8174
e054468f
AM
8175 if (h != NULL)
8176 {
8177 if (h->type == STT_GNU_IFUNC)
8178 ifunc = &h->plt.plist;
8179 }
de972ffa
AM
8180 else if (local_got_offsets != NULL
8181 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
e054468f 8182 {
de972ffa 8183 struct plt_entry **local_plt;
e054468f 8184
de972ffa
AM
8185 local_plt = (struct plt_entry **) (local_got_offsets
8186 + symtab_hdr->sh_info);
8187 ifunc = local_plt + r_symndx;
e054468f 8188 }
e054468f 8189
de972ffa
AM
8190 ent = NULL;
8191 if (ifunc != NULL
0e1862bb 8192 && (!bfd_link_pic (info)
de972ffa
AM
8193 || is_branch_reloc (r_type)))
8194 {
8195 addend = 0;
0e1862bb 8196 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
de972ffa
AM
8197 addend = rel->r_addend;
8198 ent = find_plt_ent (ifunc, got2, addend);
8199 }
8200 if (ent != NULL)
8201 {
e054468f
AM
8202 if (h == NULL && (ent->plt.offset & 1) == 0)
8203 {
8204 Elf_Internal_Rela rela;
8205 bfd_byte *loc;
8206
8207 rela.r_offset = (htab->iplt->output_section->vma
8208 + htab->iplt->output_offset
8209 + ent->plt.offset);
8210 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8211 rela.r_addend = relocation;
25f23106
AM
8212 loc = htab->reliplt->contents;
8213 loc += (htab->reliplt->reloc_count++
8214 * sizeof (Elf32_External_Rela));
e054468f
AM
8215 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8216
8217 ent->plt.offset |= 1;
8218 }
8219 if (h == NULL && (ent->glink_offset & 1) == 0)
8220 {
a7f2871e
AM
8221 unsigned char *p = ((unsigned char *) htab->glink->contents
8222 + ent->glink_offset);
8223 write_glink_stub (ent, htab->iplt, p, info);
e054468f
AM
8224 ent->glink_offset |= 1;
8225 }
8226
8227 unresolved_reloc = FALSE;
8228 if (htab->plt_type == PLT_NEW
8229 || !htab->elf.dynamic_sections_created
c7e17e05
AM
8230 || h == NULL
8231 || h->dynindx == -1)
e054468f
AM
8232 relocation = (htab->glink->output_section->vma
8233 + htab->glink->output_offset
8234 + (ent->glink_offset & ~1));
8235 else
8236 relocation = (htab->plt->output_section->vma
8237 + htab->plt->output_offset
8238 + ent->plt.offset);
8239 }
8240 }
8241
7619e7c7
AM
8242 addend = rel->r_addend;
8243 tls_type = 0;
8244 howto = NULL;
55fd94b0
AM
8245 if (r_type < R_PPC_max)
8246 howto = ppc_elf_howto_table[r_type];
7619e7c7 8247 switch (r_type)
252b5132
RH
8248 {
8249 default:
25f53a85 8250 info->callbacks->einfo
8de848d8 8251 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
d003868e 8252 input_bfd, (int) r_type, sym_name);
252b5132
RH
8253
8254 bfd_set_error (bfd_error_bad_value);
b34976b6 8255 ret = FALSE;
c316a17c 8256 goto copy_reloc;
252b5132 8257
7619e7c7
AM
8258 case R_PPC_NONE:
8259 case R_PPC_TLS:
727fc41e
AM
8260 case R_PPC_TLSGD:
8261 case R_PPC_TLSLD:
7619e7c7
AM
8262 case R_PPC_EMB_MRKREF:
8263 case R_PPC_GNU_VTINHERIT:
8264 case R_PPC_GNU_VTENTRY:
c316a17c 8265 goto copy_reloc;
7595d193 8266
7619e7c7
AM
8267 /* GOT16 relocations. Like an ADDR16 using the symbol's
8268 address in the GOT as relocation value instead of the
8269 symbol's value itself. Also, create a GOT entry for the
8270 symbol and put the symbol value there. */
8271 case R_PPC_GOT_TLSGD16:
8272 case R_PPC_GOT_TLSGD16_LO:
8273 case R_PPC_GOT_TLSGD16_HI:
8274 case R_PPC_GOT_TLSGD16_HA:
8275 tls_type = TLS_TLS | TLS_GD;
8276 goto dogot;
8277
8278 case R_PPC_GOT_TLSLD16:
8279 case R_PPC_GOT_TLSLD16_LO:
8280 case R_PPC_GOT_TLSLD16_HI:
8281 case R_PPC_GOT_TLSLD16_HA:
8282 tls_type = TLS_TLS | TLS_LD;
8283 goto dogot;
8284
8285 case R_PPC_GOT_TPREL16:
8286 case R_PPC_GOT_TPREL16_LO:
8287 case R_PPC_GOT_TPREL16_HI:
8288 case R_PPC_GOT_TPREL16_HA:
8289 tls_type = TLS_TLS | TLS_TPREL;
8290 goto dogot;
8291
8292 case R_PPC_GOT_DTPREL16:
8293 case R_PPC_GOT_DTPREL16_LO:
8294 case R_PPC_GOT_DTPREL16_HI:
8295 case R_PPC_GOT_DTPREL16_HA:
8296 tls_type = TLS_TLS | TLS_DTPREL;
8297 goto dogot;
8298
8299 case R_PPC_GOT16:
8300 case R_PPC_GOT16_LO:
8301 case R_PPC_GOT16_HI:
8302 case R_PPC_GOT16_HA:
727fc41e 8303 tls_mask = 0;
7619e7c7
AM
8304 dogot:
8305 {
8306 /* Relocation is to the entry for this symbol in the global
8307 offset table. */
8308 bfd_vma off;
8309 bfd_vma *offp;
8310 unsigned long indx;
8311
8312 if (htab->got == NULL)
8313 abort ();
8314
8315 indx = 0;
8316 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 8317 && (h == NULL
f5385ebf 8318 || !h->def_dynamic))
7619e7c7
AM
8319 offp = &htab->tlsld_got.offset;
8320 else if (h != NULL)
8321 {
8322 bfd_boolean dyn;
8323 dyn = htab->elf.dynamic_sections_created;
0e1862bb
L
8324 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8325 || (bfd_link_pic (info)
7619e7c7
AM
8326 && SYMBOL_REFERENCES_LOCAL (info, h)))
8327 /* This is actually a static link, or it is a
8328 -Bsymbolic link and the symbol is defined
8329 locally, or the symbol was forced to be local
8330 because of a version file. */
8331 ;
8332 else
8333 {
14acf4dc 8334 BFD_ASSERT (h->dynindx != -1);
7619e7c7
AM
8335 indx = h->dynindx;
8336 unresolved_reloc = FALSE;
8337 }
8338 offp = &h->got.offset;
8339 }
8340 else
8341 {
8342 if (local_got_offsets == NULL)
8343 abort ();
8344 offp = &local_got_offsets[r_symndx];
8345 }
8346
8347 /* The offset must always be a multiple of 4. We use the
8348 least significant bit to record whether we have already
8349 processed this entry. */
8350 off = *offp;
8351 if ((off & 1) != 0)
8352 off &= ~1;
8353 else
8354 {
70bccea4
AM
8355 unsigned int tls_m = (tls_mask
8356 & (TLS_LD | TLS_GD | TLS_DTPREL
8357 | TLS_TPREL | TLS_TPRELGD));
8358
8359 if (offp == &htab->tlsld_got.offset)
8360 tls_m = TLS_LD;
8361 else if (h == NULL
f5385ebf 8362 || !h->def_dynamic)
70bccea4
AM
8363 tls_m &= ~TLS_LD;
8364
8365 /* We might have multiple got entries for this sym.
8366 Initialize them all. */
8367 do
7619e7c7 8368 {
70bccea4
AM
8369 int tls_ty = 0;
8370
8371 if ((tls_m & TLS_LD) != 0)
7619e7c7 8372 {
70bccea4
AM
8373 tls_ty = TLS_TLS | TLS_LD;
8374 tls_m &= ~TLS_LD;
8375 }
8376 else if ((tls_m & TLS_GD) != 0)
8377 {
8378 tls_ty = TLS_TLS | TLS_GD;
8379 tls_m &= ~TLS_GD;
8380 }
8381 else if ((tls_m & TLS_DTPREL) != 0)
8382 {
8383 tls_ty = TLS_TLS | TLS_DTPREL;
8384 tls_m &= ~TLS_DTPREL;
8385 }
8386 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8387 {
8388 tls_ty = TLS_TLS | TLS_TPREL;
8389 tls_m = 0;
7619e7c7 8390 }
7619e7c7 8391
70bccea4 8392 /* Generate relocs for the dynamic linker. */
0e1862bb 8393 if ((bfd_link_pic (info) || indx != 0)
d6e14abc
AM
8394 && (offp == &htab->tlsld_got.offset
8395 || h == NULL
4e795f50
AM
8396 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8397 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 8398 {
91e21fb7 8399 asection *rsec = htab->relgot;
91d6fa6a 8400 bfd_byte * loc;
91e21fb7 8401
0bed072f
AM
8402 if (ifunc != NULL)
8403 rsec = htab->reliplt;
70bccea4
AM
8404 outrel.r_offset = (htab->got->output_section->vma
8405 + htab->got->output_offset
8406 + off);
e515b051 8407 outrel.r_addend = 0;
70bccea4
AM
8408 if (tls_ty & (TLS_LD | TLS_GD))
8409 {
8410 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
8411 if (tls_ty == (TLS_TLS | TLS_GD))
8412 {
25f23106
AM
8413 loc = rsec->contents;
8414 loc += (rsec->reloc_count++
70bccea4
AM
8415 * sizeof (Elf32_External_Rela));
8416 bfd_elf32_swap_reloca_out (output_bfd,
8417 &outrel, loc);
e515b051 8418 outrel.r_offset += 4;
70bccea4
AM
8419 outrel.r_info
8420 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
8421 }
8422 }
8423 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8424 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8425 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8426 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
25f23106 8427 else if (indx != 0)
70bccea4 8428 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
25f23106
AM
8429 else if (ifunc != NULL)
8430 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8431 else
8432 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
d6e14abc 8433 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM
8434 {
8435 outrel.r_addend += relocation;
8436 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
989f9879
AM
8437 {
8438 if (htab->elf.tls_sec == NULL)
8439 outrel.r_addend = 0;
8440 else
8441 outrel.r_addend -= htab->elf.tls_sec->vma;
8442 }
e515b051 8443 }
25f23106
AM
8444 loc = rsec->contents;
8445 loc += (rsec->reloc_count++
70bccea4
AM
8446 * sizeof (Elf32_External_Rela));
8447 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
8448 }
8449
70bccea4
AM
8450 /* Init the .got section contents if we're not
8451 emitting a reloc. */
8452 else
7619e7c7 8453 {
70bccea4
AM
8454 bfd_vma value = relocation;
8455
7b609f53
AM
8456 if (tls_ty == (TLS_TLS | TLS_LD))
8457 value = 1;
8458 else if (tls_ty != 0)
70bccea4 8459 {
989f9879
AM
8460 if (htab->elf.tls_sec == NULL)
8461 value = 0;
8462 else
8463 {
8464 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8465 if (tls_ty == (TLS_TLS | TLS_TPREL))
8466 value += DTP_OFFSET - TP_OFFSET;
8467 }
70bccea4 8468
7b609f53
AM
8469 if (tls_ty == (TLS_TLS | TLS_GD))
8470 {
8471 bfd_put_32 (output_bfd, value,
8472 htab->got->contents + off + 4);
8473 value = 1;
8474 }
70bccea4 8475 }
70bccea4
AM
8476 bfd_put_32 (output_bfd, value,
8477 htab->got->contents + off);
7619e7c7 8478 }
70bccea4
AM
8479
8480 off += 4;
8481 if (tls_ty & (TLS_LD | TLS_GD))
8482 off += 4;
7619e7c7 8483 }
70bccea4
AM
8484 while (tls_m != 0);
8485
8486 off = *offp;
8487 *offp = off | 1;
7619e7c7
AM
8488 }
8489
8490 if (off >= (bfd_vma) -2)
8491 abort ();
8492
70bccea4
AM
8493 if ((tls_type & TLS_TLS) != 0)
8494 {
8495 if (tls_type != (TLS_TLS | TLS_LD))
8496 {
8497 if ((tls_mask & TLS_LD) != 0
8498 && !(h == NULL
f5385ebf 8499 || !h->def_dynamic))
70bccea4
AM
8500 off += 8;
8501 if (tls_type != (TLS_TLS | TLS_GD))
8502 {
8503 if ((tls_mask & TLS_GD) != 0)
8504 off += 8;
8505 if (tls_type != (TLS_TLS | TLS_DTPREL))
8506 {
8507 if ((tls_mask & TLS_DTPREL) != 0)
8508 off += 4;
8509 }
8510 }
8511 }
8512 }
8513
d3e454b9
AM
8514 /* If here for a picfixup, we're done. */
8515 if (r_type != ELF32_R_TYPE (rel->r_info))
c316a17c 8516 goto copy_reloc;
d3e454b9 8517
e87d4038
AM
8518 relocation = (htab->got->output_section->vma
8519 + htab->got->output_offset
8520 + off
8521 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
8522
8523 /* Addends on got relocations don't make much sense.
8524 x+off@got is actually x@got+off, and since the got is
8525 generated by a hash table traversal, the value in the
8526 got at entry m+n bears little relation to the entry m. */
8527 if (addend != 0)
25f53a85 8528 info->callbacks->einfo
8de848d8 8529 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
25f53a85 8530 input_bfd, input_section, rel->r_offset,
7b609f53 8531 howto->name,
7619e7c7
AM
8532 sym_name);
8533 }
86c95733 8534 break;
7619e7c7 8535
86c95733 8536 /* Relocations that need no special processing. */
7619e7c7 8537 case R_PPC_LOCAL24PC:
252b5132
RH
8538 /* It makes no sense to point a local relocation
8539 at a symbol not in this object. */
7b609f53 8540 if (unresolved_reloc)
252b5132 8541 {
464e1740
ILT
8542 if (! (*info->callbacks->undefined_symbol) (info,
8543 h->root.root.string,
8544 input_bfd,
8545 input_section,
5cc7c785 8546 rel->r_offset,
b34976b6
AM
8547 TRUE))
8548 return FALSE;
c316a17c 8549 goto copy_reloc;
252b5132
RH
8550 }
8551 break;
8552
7619e7c7
AM
8553 case R_PPC_DTPREL16:
8554 case R_PPC_DTPREL16_LO:
8555 case R_PPC_DTPREL16_HI:
8556 case R_PPC_DTPREL16_HA:
989f9879
AM
8557 if (htab->elf.tls_sec != NULL)
8558 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8559 break;
8560
70bccea4
AM
8561 /* Relocations that may need to be propagated if this is a shared
8562 object. */
7619e7c7
AM
8563 case R_PPC_TPREL16:
8564 case R_PPC_TPREL16_LO:
8565 case R_PPC_TPREL16_HI:
8566 case R_PPC_TPREL16_HA:
766bc656
AM
8567 if (h != NULL
8568 && h->root.type == bfd_link_hash_undefweak
8569 && h->dynindx == -1)
8570 {
8571 /* Make this relocation against an undefined weak symbol
8572 resolve to zero. This is really just a tweak, since
8573 code using weak externs ought to check that they are
8574 defined before using them. */
8575 bfd_byte *p = contents + rel->r_offset - d_offset;
8576 unsigned int insn = bfd_get_32 (output_bfd, p);
8577 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8578 if (insn != 0)
8579 bfd_put_32 (output_bfd, insn, p);
8580 break;
8581 }
989f9879
AM
8582 if (htab->elf.tls_sec != NULL)
8583 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8584 /* The TPREL16 relocs shouldn't really be used in shared
8585 libs as they will result in DT_TEXTREL being set, but
8586 support them anyway. */
8587 goto dodyn;
8588
8589 case R_PPC_TPREL32:
989f9879
AM
8590 if (htab->elf.tls_sec != NULL)
8591 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8592 goto dodyn;
8593
8594 case R_PPC_DTPREL32:
989f9879
AM
8595 if (htab->elf.tls_sec != NULL)
8596 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8597 goto dodyn;
8598
e515b051
AM
8599 case R_PPC_DTPMOD32:
8600 relocation = 1;
8601 addend = 0;
8602 goto dodyn;
8603
d7128ce4
AM
8604 case R_PPC_REL16:
8605 case R_PPC_REL16_LO:
8606 case R_PPC_REL16_HI:
8607 case R_PPC_REL16_HA:
8608 break;
8609
7619e7c7 8610 case R_PPC_REL32:
625af618
AM
8611 if (h == NULL || h == htab->elf.hgot)
8612 break;
8613 /* fall through */
8614
8615 case R_PPC_ADDR32:
8616 case R_PPC_ADDR16:
8617 case R_PPC_ADDR16_LO:
8618 case R_PPC_ADDR16_HI:
8619 case R_PPC_ADDR16_HA:
8620 case R_PPC_UADDR32:
8621 case R_PPC_UADDR16:
8622 goto dodyn;
8623
b9c361e0
JL
8624 case R_PPC_VLE_REL8:
8625 case R_PPC_VLE_REL15:
8626 case R_PPC_VLE_REL24:
625af618 8627 case R_PPC_REL24:
7619e7c7
AM
8628 case R_PPC_REL14:
8629 case R_PPC_REL14_BRTAKEN:
8630 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
8631 /* If these relocations are not to a named symbol, they can be
8632 handled right here, no need to bother the dynamic linker. */
89200bf8 8633 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 8634 || h == htab->elf.hgot)
252b5132 8635 break;
70bccea4 8636 /* fall through */
252b5132 8637
7619e7c7 8638 case R_PPC_ADDR24:
7619e7c7
AM
8639 case R_PPC_ADDR14:
8640 case R_PPC_ADDR14_BRTAKEN:
8641 case R_PPC_ADDR14_BRNTAKEN:
0e1862bb 8642 if (h != NULL && !bfd_link_pic (info))
625af618
AM
8643 break;
8644 /* fall through */
8645
7619e7c7 8646 dodyn:
3348747a
NS
8647 if ((input_section->flags & SEC_ALLOC) == 0
8648 || is_vxworks_tls)
c87b5a93 8649 break;
c87b5a93 8650
0e1862bb 8651 if ((bfd_link_pic (info)
89200bf8
AM
8652 && !(h != NULL
8653 && ((h->root.type == bfd_link_hash_undefined
8654 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8655 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8656 || (h->root.type == bfd_link_hash_undefweak
8657 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 8658 && (must_be_dyn_reloc (info, r_type)
f6c52c13 8659 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe 8660 || (ELIMINATE_COPY_RELOCS
0e1862bb 8661 && !bfd_link_pic (info)
ee05f2fe
AM
8662 && h != NULL
8663 && h->dynindx != -1
f5385ebf 8664 && !h->non_got_ref
d3e454b9
AM
8665 && !h->def_regular
8666 && !(h->protected_def
8667 && ppc_elf_hash_entry (h)->has_addr16_ha
8668 && ppc_elf_hash_entry (h)->has_addr16_lo
8669 && htab->params->pic_fixup > 0)))
252b5132 8670 {
0bb2d96a 8671 int skip;
f95f8542
AM
8672 bfd_byte *loc;
8673 asection *sreloc;
252b5132 8674#ifdef DEBUG
55fd94b0
AM
8675 fprintf (stderr, "ppc_elf_relocate_section needs to "
8676 "create relocation for %s\n",
70bccea4
AM
8677 (h && h->root.root.string
8678 ? h->root.root.string : "<unknown>"));
252b5132
RH
8679#endif
8680
8681 /* When generating a shared object, these relocations
70bccea4
AM
8682 are copied into the output file to be resolved at run
8683 time. */
f95f8542
AM
8684 sreloc = elf_section_data (input_section)->sreloc;
8685 if (ifunc)
8686 sreloc = htab->reliplt;
252b5132 8687 if (sreloc == NULL)
f95f8542 8688 return FALSE;
252b5132 8689
0bb2d96a 8690 skip = 0;
5b914448
AM
8691 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8692 input_section,
8693 rel->r_offset);
0bb2d96a
JJ
8694 if (outrel.r_offset == (bfd_vma) -1
8695 || outrel.r_offset == (bfd_vma) -2)
8696 skip = (int) outrel.r_offset;
252b5132
RH
8697 outrel.r_offset += (input_section->output_section->vma
8698 + input_section->output_offset);
8699
8700 if (skip)
8701 memset (&outrel, 0, sizeof outrel);
89200bf8
AM
8702 else if ((h != NULL
8703 && (h->root.type == bfd_link_hash_undefined
8704 || h->root.type == bfd_link_hash_undefweak))
8705 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 8706 {
14acf4dc 8707 BFD_ASSERT (h->dynindx != -1);
7619e7c7 8708 unresolved_reloc = FALSE;
252b5132
RH
8709 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8710 outrel.r_addend = rel->r_addend;
8711 }
8712 else
8713 {
47388f4c
AM
8714 outrel.r_addend = relocation + rel->r_addend;
8715
25f23106 8716 if (r_type != R_PPC_ADDR32)
252b5132 8717 {
89200bf8 8718 long indx = 0;
252b5132 8719
25f23106
AM
8720 if (ifunc != NULL)
8721 {
8722 /* If we get here when building a static
8723 executable, then the libc startup function
8724 responsible for applying indirect function
8725 relocations is going to complain about
8726 the reloc type.
8727 If we get here when building a dynamic
8728 executable, it will be because we have
8729 a text relocation. The dynamic loader
8730 will set the text segment writable and
8731 non-executable to apply text relocations.
8732 So we'll segfault when trying to run the
8733 indirection function to resolve the reloc. */
25f53a85 8734 info->callbacks->einfo
8de848d8 8735 (_("%P: %H: relocation %s for indirect "
25f53a85
AM
8736 "function %s unsupported\n"),
8737 input_bfd, input_section, rel->r_offset,
25f23106
AM
8738 howto->name,
8739 sym_name);
8740 ret = FALSE;
8741 }
cf35638d 8742 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
89200bf8 8743 ;
252b5132
RH
8744 else if (sec == NULL || sec->owner == NULL)
8745 {
8746 bfd_set_error (bfd_error_bad_value);
89200bf8 8747 ret = FALSE;
252b5132
RH
8748 }
8749 else
8750 {
8751 asection *osec;
8752
47388f4c
AM
8753 /* We are turning this relocation into one
8754 against a section symbol. It would be
8755 proper to subtract the symbol's value,
8756 osec->vma, from the emitted reloc addend,
25f23106
AM
8757 but ld.so expects buggy relocs.
8758 FIXME: Why not always use a zero index? */
252b5132
RH
8759 osec = sec->output_section;
8760 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
8761 if (indx == 0)
8762 {
8763 osec = htab->elf.text_index_section;
8764 indx = elf_section_data (osec)->dynindx;
8765 }
8766 BFD_ASSERT (indx != 0);
252b5132 8767#ifdef DEBUG
74541ad4 8768 if (indx == 0)
e460dd0d 8769 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
8770 indx, osec->name, osec->flags,
8771 h->root.root.string);
252b5132
RH
8772#endif
8773 }
8774
8775 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132 8776 }
25f23106
AM
8777 else if (ifunc != NULL)
8778 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8779 else
8780 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
8781 }
8782
947216bf
AM
8783 loc = sreloc->contents;
8784 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8785 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 8786
2243deae 8787 if (skip == -1)
c316a17c 8788 goto copy_reloc;
2243deae
L
8789
8790 /* This reloc will be computed at runtime. We clear the memory
8791 so that it contains predictable value. */
8792 if (! skip
8793 && ((input_section->flags & SEC_ALLOC) != 0
8794 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8795 {
8796 relocation = howto->pc_relative ? outrel.r_offset : 0;
8797 addend = 0;
8798 break;
8799 }
252b5132 8800 }
252b5132
RH
8801 break;
8802
32af9f6e
AM
8803 case R_PPC_RELAX_PLT:
8804 case R_PPC_RELAX_PLTREL24:
de972ffa
AM
8805 if (h != NULL)
8806 {
32af9f6e
AM
8807 struct plt_entry *ent;
8808 bfd_vma got2_addend = 0;
8809
8810 if (r_type == R_PPC_RELAX_PLTREL24)
8811 {
0e1862bb 8812 if (bfd_link_pic (info))
32af9f6e
AM
8813 got2_addend = addend;
8814 addend = 0;
8815 }
8816 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
de972ffa
AM
8817 if (htab->plt_type == PLT_NEW)
8818 relocation = (htab->glink->output_section->vma
8819 + htab->glink->output_offset
8820 + ent->glink_offset);
8821 else
8822 relocation = (htab->plt->output_section->vma
8823 + htab->plt->output_offset
8824 + ent->plt.offset);
8825 }
b4a38de6
AM
8826 /* Fall thru */
8827
32af9f6e 8828 case R_PPC_RELAX:
9abc968f 8829 {
53291d1f
AM
8830 const int *stub;
8831 size_t size;
8832 size_t insn_offset = rel->r_offset;
8833 unsigned int insn;
9abc968f 8834
0e1862bb 8835 if (bfd_link_pic (info))
53291d1f
AM
8836 {
8837 relocation -= (input_section->output_section->vma
8838 + input_section->output_offset
8839 + rel->r_offset - 4);
8840 stub = shared_stub_entry;
8841 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8842 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8843 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8844 stub += 3;
8845 size = ARRAY_SIZE (shared_stub_entry) - 3;
8846 }
8847 else
8848 {
8849 stub = stub_entry;
8850 size = ARRAY_SIZE (stub_entry);
8851 }
9abc968f 8852
9abc968f 8853 relocation += addend;
0e1862bb 8854 if (bfd_link_relocatable (info))
53291d1f
AM
8855 relocation = 0;
8856
8857 /* First insn is HA, second is LO. */
8858 insn = *stub++;
8859 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8860 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8861 insn_offset += 4;
8862
8863 insn = *stub++;
8864 insn |= relocation & 0xffff;
8865 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8866 insn_offset += 4;
8867 size -= 2;
8868
8869 while (size != 0)
8870 {
8871 insn = *stub++;
8872 --size;
8873 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8874 insn_offset += 4;
8875 }
9bc4e62b
NS
8876
8877 /* Rewrite the reloc and convert one of the trailing nop
8878 relocs to describe this relocation. */
8879 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8880 /* The relocs are at the bottom 2 bytes */
c316a17c
AM
8881 wrel->r_offset = rel->r_offset + d_offset;
8882 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8883 wrel->r_addend = rel->r_addend;
8884 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8885 wrel++, rel++;
8886 wrel->r_offset += 4;
8887 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9abc968f 8888 }
8517fae7 8889 continue;
deaaf2f3 8890
70bccea4 8891 /* Indirect .sdata relocation. */
7619e7c7 8892 case R_PPC_EMB_SDAI16:
c9a2f333 8893 BFD_ASSERT (htab->sdata[0].section != NULL);
bd6c6e2b
AM
8894 if (!is_static_defined (htab->sdata[0].sym))
8895 {
8896 unresolved_reloc = TRUE;
8897 break;
8898 }
7619e7c7 8899 relocation
76750a2f
AM
8900 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8901 h, relocation, rel);
bd6c6e2b 8902 addend = 0;
252b5132
RH
8903 break;
8904
70bccea4 8905 /* Indirect .sdata2 relocation. */
7619e7c7 8906 case R_PPC_EMB_SDA2I16:
c9a2f333 8907 BFD_ASSERT (htab->sdata[1].section != NULL);
bd6c6e2b
AM
8908 if (!is_static_defined (htab->sdata[1].sym))
8909 {
8910 unresolved_reloc = TRUE;
8911 break;
8912 }
7619e7c7 8913 relocation
76750a2f
AM
8914 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8915 h, relocation, rel);
bd6c6e2b 8916 addend = 0;
252b5132
RH
8917 break;
8918
70bccea4
AM
8919 /* Handle the TOC16 reloc. We want to use the offset within the .got
8920 section, not the actual VMA. This is appropriate when generating
8921 an embedded ELF object, for which the .got section acts like the
8922 AIX .toc section. */
7619e7c7 8923 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
8924 if (sec == NULL || sec->output_section == NULL)
8925 {
8926 unresolved_reloc = TRUE;
8927 break;
8928 }
a0f49396
NC
8929 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8930 ".got") == 0
8931 || strcmp (bfd_get_section_name (sec->owner, sec),
8932 ".cgot") == 0);
252b5132 8933
3b4f3a11 8934 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
8935 break;
8936
7619e7c7 8937 case R_PPC_PLTREL24:
f75e0e33
AM
8938 if (h != NULL && ifunc == NULL)
8939 {
8940 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
0e1862bb 8941 bfd_link_pic (info) ? addend : 0);
f75e0e33
AM
8942 if (ent == NULL
8943 || htab->plt == NULL)
8944 {
8945 /* We didn't make a PLT entry for this symbol. This
8946 happens when statically linking PIC code, or when
8947 using -Bsymbolic. */
8948 }
8949 else
8950 {
8951 /* Relocation is to the entry for this symbol in the
8952 procedure linkage table. */
8953 unresolved_reloc = FALSE;
8954 if (htab->plt_type == PLT_NEW)
8955 relocation = (htab->glink->output_section->vma
8956 + htab->glink->output_offset
8957 + ent->glink_offset);
8958 else
8959 relocation = (htab->plt->output_section->vma
8960 + htab->plt->output_offset
8961 + ent->plt.offset);
8962 }
8963 }
252b5132 8964
f75e0e33
AM
8965 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8966 addend specifies the GOT pointer offset within .got2.
8967 Don't apply it to the relocation field. */
8968 addend = 0;
8da6118f 8969 break;
252b5132 8970
70bccea4 8971 /* Relocate against _SDA_BASE_. */
7619e7c7 8972 case R_PPC_SDAREL16:
252b5132
RH
8973 {
8974 const char *name;
bd6c6e2b 8975 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
252b5132 8976
bd6c6e2b
AM
8977 if (sec == NULL
8978 || sec->output_section == NULL
8979 || !is_static_defined (sda))
3b4f3a11
AM
8980 {
8981 unresolved_reloc = TRUE;
8982 break;
8983 }
bd6c6e2b 8984 addend -= SYM_VAL (sda);
3b4f3a11 8985
a0f49396 8986 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
8987 if (!(strcmp (name, ".sdata") == 0
8988 || strcmp (name, ".sbss") == 0))
252b5132 8989 {
25f53a85 8990 info->callbacks->einfo
8de848d8 8991 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 8992 "in the wrong output section (%s)\n"),
d003868e 8993 input_bfd,
55fd94b0
AM
8994 sym_name,
8995 howto->name,
8996 name);
252b5132 8997 }
252b5132
RH
8998 }
8999 break;
9000
70bccea4 9001 /* Relocate against _SDA2_BASE_. */
7619e7c7 9002 case R_PPC_EMB_SDA2REL:
252b5132
RH
9003 {
9004 const char *name;
bd6c6e2b 9005 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
252b5132 9006
bd6c6e2b
AM
9007 if (sec == NULL
9008 || sec->output_section == NULL
9009 || !is_static_defined (sda))
3b4f3a11
AM
9010 {
9011 unresolved_reloc = TRUE;
9012 break;
9013 }
bd6c6e2b 9014 addend -= SYM_VAL (sda);
3b4f3a11 9015
a0f49396 9016 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9017 if (!(strcmp (name, ".sdata2") == 0
9018 || strcmp (name, ".sbss2") == 0))
252b5132 9019 {
25f53a85 9020 info->callbacks->einfo
8de848d8 9021 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9022 "in the wrong output section (%s)\n"),
d003868e 9023 input_bfd,
55fd94b0
AM
9024 sym_name,
9025 howto->name,
9026 name);
252b5132 9027 }
252b5132
RH
9028 }
9029 break;
9030
b9c361e0 9031 case R_PPC_VLE_LO16A:
86c95733
AM
9032 relocation = relocation + addend;
9033 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9034 relocation, split16a_type);
c316a17c 9035 goto copy_reloc;
b9c361e0
JL
9036
9037 case R_PPC_VLE_LO16D:
86c95733
AM
9038 relocation = relocation + addend;
9039 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9040 relocation, split16d_type);
c316a17c 9041 goto copy_reloc;
b9c361e0
JL
9042
9043 case R_PPC_VLE_HI16A:
86c95733
AM
9044 relocation = (relocation + addend) >> 16;
9045 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9046 relocation, split16a_type);
c316a17c 9047 goto copy_reloc;
b9c361e0
JL
9048
9049 case R_PPC_VLE_HI16D:
86c95733
AM
9050 relocation = (relocation + addend) >> 16;
9051 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9052 relocation, split16d_type);
c316a17c 9053 goto copy_reloc;
b9c361e0
JL
9054
9055 case R_PPC_VLE_HA16A:
86c95733
AM
9056 relocation = (relocation + addend + 0x8000) >> 16;
9057 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9058 relocation, split16a_type);
c316a17c 9059 goto copy_reloc;
b9c361e0
JL
9060
9061 case R_PPC_VLE_HA16D:
86c95733
AM
9062 relocation = (relocation + addend + 0x8000) >> 16;
9063 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9064 relocation, split16d_type);
c316a17c 9065 goto copy_reloc;
b9c361e0 9066
70bccea4 9067 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7 9068 case R_PPC_EMB_SDA21:
b9c361e0 9069 case R_PPC_VLE_SDA21:
7619e7c7 9070 case R_PPC_EMB_RELSDA:
b9c361e0 9071 case R_PPC_VLE_SDA21_LO:
252b5132
RH
9072 {
9073 const char *name;
9074 int reg;
86c95733 9075 unsigned int insn;
bd6c6e2b 9076 struct elf_link_hash_entry *sda = NULL;
252b5132 9077
3b4f3a11
AM
9078 if (sec == NULL || sec->output_section == NULL)
9079 {
9080 unresolved_reloc = TRUE;
9081 break;
9082 }
9083
a0f49396 9084 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9085 if (strcmp (name, ".sdata") == 0
9086 || strcmp (name, ".sbss") == 0)
252b5132
RH
9087 {
9088 reg = 13;
bd6c6e2b 9089 sda = htab->sdata[0].sym;
252b5132 9090 }
93d1b056
AM
9091 else if (strcmp (name, ".sdata2") == 0
9092 || strcmp (name, ".sbss2") == 0)
252b5132
RH
9093 {
9094 reg = 2;
bd6c6e2b 9095 sda = htab->sdata[1].sym;
252b5132 9096 }
8da6118f
KH
9097 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9098 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
9099 {
9100 reg = 0;
9101 }
252b5132
RH
9102 else
9103 {
25f53a85 9104 info->callbacks->einfo
8de848d8 9105 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 9106 "in the wrong output section (%s)\n"),
d003868e 9107 input_bfd,
55fd94b0
AM
9108 sym_name,
9109 howto->name,
9110 name);
252b5132
RH
9111
9112 bfd_set_error (bfd_error_bad_value);
b34976b6 9113 ret = FALSE;
c316a17c 9114 goto copy_reloc;
252b5132
RH
9115 }
9116
bd6c6e2b
AM
9117 if (sda != NULL)
9118 {
9119 if (!is_static_defined (sda))
9120 {
9121 unresolved_reloc = TRUE;
9122 break;
9123 }
9124 addend -= SYM_VAL (sda);
9125 }
9126
86c95733 9127 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
b9c361e0
JL
9128 if (reg == 0
9129 && (r_type == R_PPC_VLE_SDA21
9130 || r_type == R_PPC_VLE_SDA21_LO))
9131 {
86c95733
AM
9132 relocation = relocation + addend;
9133 addend = 0;
9134
9135 /* Force e_li insn, keeping RT from original insn. */
9136 insn &= 0x1f << 21;
9137 insn |= 28u << 26;
9138
9139 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9140 /* Top 4 bits of value to 17..20. */
9141 insn |= (relocation & 0xf0000) >> 5;
9142 /* Next 5 bits of the value to 11..15. */
9143 insn |= (relocation & 0xf800) << 5;
9144 /* And the final 11 bits of the value to bits 21 to 31. */
9145 insn |= relocation & 0x7ff;
9146
c3301df1
AM
9147 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9148
9149 if (r_type == R_PPC_VLE_SDA21
9150 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9151 goto overflow;
c316a17c 9152 goto copy_reloc;
b9c361e0
JL
9153 }
9154 else if (r_type == R_PPC_EMB_SDA21
9155 || r_type == R_PPC_VLE_SDA21
9156 || r_type == R_PPC_VLE_SDA21_LO)
91d6fa6a 9157 {
86c95733 9158 /* Fill in register field. */
252b5132 9159 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
252b5132 9160 }
86c95733 9161 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
9162 }
9163 break;
9164
b9c361e0
JL
9165 case R_PPC_VLE_SDAREL_LO16A:
9166 case R_PPC_VLE_SDAREL_LO16D:
9167 case R_PPC_VLE_SDAREL_HI16A:
9168 case R_PPC_VLE_SDAREL_HI16D:
9169 case R_PPC_VLE_SDAREL_HA16A:
9170 case R_PPC_VLE_SDAREL_HA16D:
9171 {
9172 bfd_vma value;
9173 const char *name;
9174 //int reg;
9175 struct elf_link_hash_entry *sda = NULL;
9176
9177 if (sec == NULL || sec->output_section == NULL)
9178 {
9179 unresolved_reloc = TRUE;
9180 break;
9181 }
9182
a0f49396 9183 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
9184 if (strcmp (name, ".sdata") == 0
9185 || strcmp (name, ".sbss") == 0)
b9c361e0
JL
9186 {
9187 //reg = 13;
9188 sda = htab->sdata[0].sym;
9189 }
93d1b056
AM
9190 else if (strcmp (name, ".sdata2") == 0
9191 || strcmp (name, ".sbss2") == 0)
b9c361e0
JL
9192 {
9193 //reg = 2;
9194 sda = htab->sdata[1].sym;
9195 }
9196 else
9197 {
9198 (*_bfd_error_handler)
9199 (_("%B: the target (%s) of a %s relocation is "
9200 "in the wrong output section (%s)"),
9201 input_bfd,
9202 sym_name,
9203 howto->name,
9204 name);
9205
9206 bfd_set_error (bfd_error_bad_value);
9207 ret = FALSE;
c316a17c 9208 goto copy_reloc;
b9c361e0
JL
9209 }
9210
9211 if (sda != NULL)
9212 {
9213 if (!is_static_defined (sda))
9214 {
9215 unresolved_reloc = TRUE;
9216 break;
9217 }
9218 }
9219
86c95733
AM
9220 value = (sda->root.u.def.section->output_section->vma
9221 + sda->root.u.def.section->output_offset
9222 + addend);
9223
9224 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9225 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9226 value, split16a_type);
9227 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9228 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9229 value, split16d_type);
9230 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
b9c361e0 9231 {
86c95733
AM
9232 value = value >> 16;
9233 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9234 value, split16a_type);
b9c361e0 9235 }
86c95733 9236 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
b9c361e0 9237 {
86c95733
AM
9238 value = value >> 16;
9239 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9240 value, split16d_type);
b9c361e0 9241 }
86c95733 9242 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
b9c361e0 9243 {
86c95733
AM
9244 value = (value + 0x8000) >> 16;
9245 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9246 value, split16a_type);
b9c361e0 9247 }
86c95733 9248 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
b9c361e0 9249 {
86c95733
AM
9250 value = (value + 0x8000) >> 16;
9251 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9252 value, split16d_type);
b9c361e0
JL
9253 }
9254 }
c316a17c 9255 goto copy_reloc;
b9c361e0 9256
70bccea4 9257 /* Relocate against the beginning of the section. */
7619e7c7
AM
9258 case R_PPC_SECTOFF:
9259 case R_PPC_SECTOFF_LO:
9260 case R_PPC_SECTOFF_HI:
9261 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
9262 if (sec == NULL || sec->output_section == NULL)
9263 {
9264 unresolved_reloc = TRUE;
9265 break;
9266 }
252b5132 9267 addend -= sec->output_section->vma;
252b5132
RH
9268 break;
9269
70bccea4 9270 /* Negative relocations. */
7619e7c7
AM
9271 case R_PPC_EMB_NADDR32:
9272 case R_PPC_EMB_NADDR16:
9273 case R_PPC_EMB_NADDR16_LO:
9274 case R_PPC_EMB_NADDR16_HI:
9275 case R_PPC_EMB_NADDR16_HA:
8da6118f 9276 addend -= 2 * relocation;
252b5132
RH
9277 break;
9278
7619e7c7
AM
9279 case R_PPC_COPY:
9280 case R_PPC_GLOB_DAT:
9281 case R_PPC_JMP_SLOT:
9282 case R_PPC_RELATIVE:
e054468f 9283 case R_PPC_IRELATIVE:
7619e7c7
AM
9284 case R_PPC_PLT32:
9285 case R_PPC_PLTREL32:
9286 case R_PPC_PLT16_LO:
9287 case R_PPC_PLT16_HI:
9288 case R_PPC_PLT16_HA:
9289 case R_PPC_ADDR30:
9290 case R_PPC_EMB_RELSEC16:
9291 case R_PPC_EMB_RELST_LO:
9292 case R_PPC_EMB_RELST_HI:
9293 case R_PPC_EMB_RELST_HA:
9294 case R_PPC_EMB_BIT_FLD:
25f53a85 9295 info->callbacks->einfo
8de848d8 9296 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
d003868e 9297 input_bfd,
7619e7c7
AM
9298 howto->name,
9299 sym_name);
252b5132
RH
9300
9301 bfd_set_error (bfd_error_invalid_operation);
b34976b6 9302 ret = FALSE;
c316a17c 9303 goto copy_reloc;
7619e7c7 9304 }
252b5132 9305
7619e7c7
AM
9306 /* Do any further special processing. */
9307 switch (r_type)
9308 {
9309 default:
9310 break;
9311
9312 case R_PPC_ADDR16_HA:
d7128ce4 9313 case R_PPC_REL16_HA:
7619e7c7
AM
9314 case R_PPC_SECTOFF_HA:
9315 case R_PPC_TPREL16_HA:
9316 case R_PPC_DTPREL16_HA:
7619e7c7
AM
9317 case R_PPC_EMB_NADDR16_HA:
9318 case R_PPC_EMB_RELST_HA:
9319 /* It's just possible that this symbol is a weak symbol
7b609f53 9320 that's not actually defined anywhere. In that case,
7619e7c7
AM
9321 'sec' would be NULL, and we should leave the symbol
9322 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
9323 if (sec == NULL)
9324 break;
9325 /* Fall thru */
9326
9327 case R_PPC_PLT16_HA:
9328 case R_PPC_GOT16_HA:
9329 case R_PPC_GOT_TLSGD16_HA:
9330 case R_PPC_GOT_TLSLD16_HA:
9331 case R_PPC_GOT_TPREL16_HA:
9332 case R_PPC_GOT_DTPREL16_HA:
9333 /* Add 0x10000 if sign bit in 0:15 is set.
9334 Bits 0:15 are not used. */
9335 addend += 0x8000;
7619e7c7 9336 break;
1fe532cf
AM
9337
9338 case R_PPC_ADDR16:
9339 case R_PPC_ADDR16_LO:
9340 case R_PPC_GOT16:
9341 case R_PPC_GOT16_LO:
9342 case R_PPC_SDAREL16:
9343 case R_PPC_SECTOFF:
9344 case R_PPC_SECTOFF_LO:
9345 case R_PPC_DTPREL16:
9346 case R_PPC_DTPREL16_LO:
9347 case R_PPC_TPREL16:
9348 case R_PPC_TPREL16_LO:
9349 case R_PPC_GOT_TLSGD16:
9350 case R_PPC_GOT_TLSGD16_LO:
9351 case R_PPC_GOT_TLSLD16:
9352 case R_PPC_GOT_TLSLD16_LO:
9353 case R_PPC_GOT_DTPREL16:
9354 case R_PPC_GOT_DTPREL16_LO:
9355 case R_PPC_GOT_TPREL16:
9356 case R_PPC_GOT_TPREL16_LO:
9357 {
9358 /* The 32-bit ABI lacks proper relocations to deal with
9359 certain 64-bit instructions. Prevent damage to bits
9360 that make up part of the insn opcode. */
9361 unsigned int insn, mask, lobit;
9362
c316a17c
AM
9363 insn = bfd_get_32 (output_bfd,
9364 contents + rel->r_offset - d_offset);
1fe532cf
AM
9365 mask = 0;
9366 if (is_insn_ds_form (insn))
9367 mask = 3;
9368 else if (is_insn_dq_form (insn))
9369 mask = 15;
9370 else
9371 break;
9372 lobit = mask & (relocation + addend);
9373 if (lobit != 0)
9374 {
9375 addend -= lobit;
9376 info->callbacks->einfo
9377 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9378 input_bfd, input_section, rel->r_offset,
9379 howto->name, sym_name, mask + 1);
9380 bfd_set_error (bfd_error_bad_value);
9381 ret = FALSE;
9382 }
9383 addend += insn & mask;
9384 }
9385 break;
252b5132
RH
9386 }
9387
252b5132 9388#ifdef DEBUG
55fd94b0
AM
9389 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9390 "offset = %ld, addend = %ld\n",
252b5132 9391 howto->name,
8da6118f 9392 (int) r_type,
252b5132
RH
9393 sym_name,
9394 r_symndx,
7619e7c7 9395 (long) rel->r_offset,
8da6118f 9396 (long) addend);
252b5132
RH
9397#endif
9398
7619e7c7
AM
9399 if (unresolved_reloc
9400 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
9401 && h->def_dynamic)
9402 && _bfd_elf_section_offset (output_bfd, info, input_section,
9403 rel->r_offset) != (bfd_vma) -1)
7619e7c7 9404 {
25f53a85 9405 info->callbacks->einfo
8de848d8 9406 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
25f53a85 9407 input_bfd, input_section, rel->r_offset,
7b609f53 9408 howto->name,
7619e7c7
AM
9409 sym_name);
9410 ret = FALSE;
9411 }
9412
86c95733
AM
9413 /* 16-bit fields in insns mostly have signed values, but a
9414 few insns have 16-bit unsigned values. Really, we should
9415 have different reloc types. */
9416 if (howto->complain_on_overflow != complain_overflow_dont
9417 && howto->dst_mask == 0xffff
9418 && (input_section->flags & SEC_CODE) != 0)
9419 {
9420 enum complain_overflow complain = complain_overflow_signed;
9421
9422 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9423 {
9424 unsigned int insn;
9425
9426 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM
9427 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9428 complain = complain_overflow_bitfield;
9429 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9430 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9431 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
86c95733
AM
9432 complain = complain_overflow_unsigned;
9433 }
9434 if (howto->complain_on_overflow != complain)
9435 {
9436 alt_howto = *howto;
9437 alt_howto.complain_on_overflow = complain;
9438 howto = &alt_howto;
9439 }
9440 }
9441
9442 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9443 rel->r_offset, relocation, addend);
252b5132 9444
7619e7c7 9445 if (r != bfd_reloc_ok)
252b5132 9446 {
7619e7c7 9447 if (r == bfd_reloc_overflow)
252b5132 9448 {
c3301df1 9449 overflow:
8131c122
AM
9450 /* On code like "if (foo) foo();" don't report overflow
9451 on a branch to zero when foo is undefined. */
9452 if (!warned
9453 && !(h != NULL
9454 && (h->root.type == bfd_link_hash_undefweak
9455 || h->root.type == bfd_link_hash_undefined)
9456 && is_branch_reloc (r_type)))
dc1bc0c9 9457 {
8131c122
AM
9458 if (!((*info->callbacks->reloc_overflow)
9459 (info, (h ? &h->root : NULL), sym_name,
9460 howto->name, rel->r_addend,
9461 input_bfd, input_section, rel->r_offset)))
9462 return FALSE;
dc1bc0c9 9463 }
dc1bc0c9
RH
9464 }
9465 else
9466 {
25f53a85 9467 info->callbacks->einfo
8de848d8 9468 (_("%P: %H: %s reloc against `%s': error %d\n"),
25f53a85
AM
9469 input_bfd, input_section, rel->r_offset,
9470 howto->name, sym_name, (int) r);
7619e7c7 9471 ret = FALSE;
252b5132
RH
9472 }
9473 }
c316a17c
AM
9474 copy_reloc:
9475 if (wrel != rel)
9476 *wrel = *rel;
9477 }
9478
9479 if (wrel != rel)
9480 {
9481 Elf_Internal_Shdr *rel_hdr;
9482 size_t deleted = rel - wrel;
9483
9484 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9485 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9486 if (rel_hdr->sh_size == 0)
9487 {
9488 /* It is too late to remove an empty reloc section. Leave
9489 one NONE reloc.
9490 ??? What is wrong with an empty section??? */
9491 rel_hdr->sh_size = rel_hdr->sh_entsize;
9492 deleted -= 1;
9493 wrel++;
9494 }
9495 relend = wrel;
9496 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9497 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9498 input_section->reloc_count -= deleted;
252b5132
RH
9499 }
9500
252b5132
RH
9501#ifdef DEBUG
9502 fprintf (stderr, "\n");
9503#endif
9504
53291d1f
AM
9505 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9506 && input_section->size != input_section->rawsize
9507 && (strcmp (input_section->output_section->name, ".init") == 0
9508 || strcmp (input_section->output_section->name, ".fini") == 0))
9509 {
9510 /* Branch around the trampolines. */
9511 unsigned int insn = B + input_section->size - input_section->rawsize;
9512 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9513 }
9514
5446cbdf 9515 if (htab->params->ppc476_workaround
795bc6b3 9516 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
0e1862bb 9517 && (!bfd_link_relocatable (info)
795bc6b3
AM
9518 || (input_section->output_section->alignment_power
9519 >= htab->params->pagesize_p2)))
5446cbdf 9520 {
5446cbdf 9521 bfd_vma start_addr, end_addr, addr;
795bc6b3 9522 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf 9523
5446cbdf 9524 if (relax_info->workaround_size != 0)
40fd06d1
AM
9525 {
9526 bfd_byte *p;
9527 unsigned int n;
9528 bfd_byte fill[4];
9529
9530 bfd_put_32 (input_bfd, BA, fill);
9531 p = contents + input_section->size - relax_info->workaround_size;
9532 n = relax_info->workaround_size >> 2;
9533 while (n--)
9534 {
9535 memcpy (p, fill, 4);
9536 p += 4;
9537 }
9538 }
5446cbdf
AM
9539
9540 /* The idea is: Replace the last instruction on a page with a
9541 branch to a patch area. Put the insn there followed by a
9542 branch back to the next page. Complicated a little by
9543 needing to handle moved conditional branches, and by not
9544 wanting to touch data-in-text. */
9545
9546 start_addr = (input_section->output_section->vma
9547 + input_section->output_offset);
9548 end_addr = (start_addr + input_section->size
9549 - relax_info->workaround_size);
9550 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9551 addr < end_addr;
9552 addr += pagesize)
9553 {
9554 bfd_vma offset = addr - start_addr;
9555 Elf_Internal_Rela *lo, *hi;
9556 bfd_boolean is_data;
9557 bfd_vma patch_off, patch_addr;
9558 unsigned int insn;
9559
9560 /* Do we have a data reloc at this offset? If so, leave
9561 the word alone. */
9562 is_data = FALSE;
9563 lo = relocs;
668e22e5
AM
9564 hi = relend;
9565 rel = NULL;
5446cbdf
AM
9566 while (lo < hi)
9567 {
9568 rel = lo + (hi - lo) / 2;
9569 if (rel->r_offset < offset)
9570 lo = rel + 1;
668e22e5 9571 else if (rel->r_offset > offset + 3)
5446cbdf
AM
9572 hi = rel;
9573 else
9574 {
9575 switch (ELF32_R_TYPE (rel->r_info))
9576 {
9577 case R_PPC_ADDR32:
9578 case R_PPC_UADDR32:
9579 case R_PPC_REL32:
9580 case R_PPC_ADDR30:
9581 is_data = TRUE;
9582 break;
9583 default:
9584 break;
9585 }
9586 break;
9587 }
9588 }
9589 if (is_data)
9590 continue;
9591
b4ab4364
AM
9592 /* Some instructions can be left alone too. Unconditional
9593 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9594 avoid the icache failure.
9595
9596 The problem occurs due to prefetch across a page boundary
9597 where stale instructions can be fetched from the next
9598 page, and the mechanism for flushing these bad
9599 instructions fails under certain circumstances. The
9600 unconditional branches:
9601 1) Branch: b, bl, ba, bla,
9602 2) Branch Conditional: bc, bca, bcl, bcla,
9603 3) Branch Conditional to Link Register: bclr, bclrl,
9604 where (2) and (3) have BO=0x14 making them unconditional,
9605 prevent the bad prefetch because the prefetch itself is
9606 affected by these instructions. This happens even if the
9607 instruction is not executed.
9608
9609 A bctr example:
9610 .
9611 . lis 9,new_page@ha
9612 . addi 9,9,new_page@l
9613 . mtctr 9
9614 . bctr
9615 . nop
9616 . nop
9617 . new_page:
9618 .
9619 The bctr is not predicted taken due to ctr not being
9620 ready, so prefetch continues on past the bctr into the
9621 new page which might have stale instructions. If they
9622 fail to be flushed, then they will be executed after the
9623 bctr executes. Either of the following modifications
9624 prevent the bad prefetch from happening in the first
9625 place:
9626 .
1b786873
L
9627 . lis 9,new_page@ha lis 9,new_page@ha
9628 . addi 9,9,new_page@l addi 9,9,new_page@l
9629 . mtctr 9 mtctr 9
9630 . bctr bctr
b4ab4364 9631 . nop b somewhere_else
1b786873
L
9632 . b somewhere_else nop
9633 . new_page: new_page:
b4ab4364 9634 . */
5446cbdf 9635 insn = bfd_get_32 (input_bfd, contents + offset);
b4ab4364
AM
9636 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9637 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9638 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
5446cbdf 9639 || ((insn & (0x3f << 26)) == (19u << 26)
b4ab4364
AM
9640 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9641 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
5446cbdf
AM
9642 continue;
9643
9644 patch_addr = (start_addr + input_section->size
9645 - relax_info->workaround_size);
9646 patch_addr = (patch_addr + 15) & -16;
9647 patch_off = patch_addr - start_addr;
9648 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
668e22e5
AM
9649
9650 if (rel != NULL
9651 && rel->r_offset >= offset
9652 && rel->r_offset < offset + 4)
9653 {
f8b44781
AM
9654 asection *sreloc;
9655
668e22e5
AM
9656 /* If the insn we are patching had a reloc, adjust the
9657 reloc r_offset so that the reloc applies to the moved
9658 location. This matters for -r and --emit-relocs. */
9659 if (rel + 1 != relend)
9660 {
9661 Elf_Internal_Rela tmp = *rel;
9662
9663 /* Keep the relocs sorted by r_offset. */
9664 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9665 relend[-1] = tmp;
9666 }
9667 relend[-1].r_offset += patch_off - offset;
f8b44781
AM
9668
9669 /* Adjust REL16 addends too. */
9670 switch (ELF32_R_TYPE (relend[-1].r_info))
9671 {
9672 case R_PPC_REL16:
9673 case R_PPC_REL16_LO:
9674 case R_PPC_REL16_HI:
9675 case R_PPC_REL16_HA:
9676 relend[-1].r_addend += patch_off - offset;
9677 break;
9678 default:
9679 break;
9680 }
9681
9682 /* If we are building a PIE or shared library with
9683 non-PIC objects, perhaps we had a dynamic reloc too?
9684 If so, the dynamic reloc must move with the insn. */
9685 sreloc = elf_section_data (input_section)->sreloc;
9686 if (sreloc != NULL)
9687 {
1d5c94cb 9688 Elf32_External_Rela *slo, *shi, *srelend;
f8b44781
AM
9689 bfd_vma soffset;
9690
1d5c94cb
AM
9691 slo = (Elf32_External_Rela *) sreloc->contents;
9692 shi = srelend = slo + sreloc->reloc_count;
f8b44781
AM
9693 soffset = (offset + input_section->output_section->vma
9694 + input_section->output_offset);
9695 while (slo < shi)
9696 {
1d5c94cb
AM
9697 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9698 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9699 &outrel);
f8b44781
AM
9700 if (outrel.r_offset < soffset)
9701 slo = srel + 1;
9702 else if (outrel.r_offset > soffset + 3)
9703 shi = srel;
9704 else
9705 {
1d5c94cb 9706 if (srel + 1 != srelend)
f8b44781 9707 {
1d5c94cb
AM
9708 memmove (srel, srel + 1,
9709 (srelend - (srel + 1)) * sizeof (*srel));
9710 srel = srelend - 1;
f8b44781
AM
9711 }
9712 outrel.r_offset += patch_off - offset;
1d5c94cb
AM
9713 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9714 (bfd_byte *) srel);
f8b44781
AM
9715 break;
9716 }
9717 }
9718 }
668e22e5
AM
9719 }
9720 else
9721 rel = NULL;
9722
5446cbdf
AM
9723 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9724 && (insn & 2) == 0 /* relative */)
9725 {
9726 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9727
9728 delta += offset - patch_off;
0e1862bb 9729 if (bfd_link_relocatable (info) && rel != NULL)
668e22e5 9730 delta = 0;
0e1862bb 9731 if (!bfd_link_relocatable (info) && rel != NULL)
668e22e5
AM
9732 {
9733 enum elf_ppc_reloc_type r_type;
9734
9735 r_type = ELF32_R_TYPE (relend[-1].r_info);
9736 if (r_type == R_PPC_REL14_BRTAKEN)
9737 insn |= BRANCH_PREDICT_BIT;
9738 else if (r_type == R_PPC_REL14_BRNTAKEN)
9739 insn &= ~BRANCH_PREDICT_BIT;
9740 else
9741 BFD_ASSERT (r_type == R_PPC_REL14);
9742
9743 if ((r_type == R_PPC_REL14_BRTAKEN
9744 || r_type == R_PPC_REL14_BRNTAKEN)
9745 && delta + 0x8000 < 0x10000
9746 && (bfd_signed_vma) delta < 0)
9747 insn ^= BRANCH_PREDICT_BIT;
9748 }
5446cbdf
AM
9749 if (delta + 0x8000 < 0x10000)
9750 {
9751 bfd_put_32 (input_bfd,
9752 (insn & ~0xfffc) | (delta & 0xfffc),
9753 contents + patch_off);
9754 patch_off += 4;
9755 bfd_put_32 (input_bfd,
9756 B | ((offset + 4 - patch_off) & 0x3fffffc),
9757 contents + patch_off);
9758 patch_off += 4;
9759 }
9760 else
9761 {
668e22e5
AM
9762 if (rel != NULL)
9763 {
9764 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9765
9766 relend[-1].r_offset += 8;
9767 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9768 }
5446cbdf
AM
9769 bfd_put_32 (input_bfd,
9770 (insn & ~0xfffc) | 8,
9771 contents + patch_off);
9772 patch_off += 4;
9773 bfd_put_32 (input_bfd,
9774 B | ((offset + 4 - patch_off) & 0x3fffffc),
9775 contents + patch_off);
9776 patch_off += 4;
9777 bfd_put_32 (input_bfd,
9778 B | ((delta - 8) & 0x3fffffc),
9779 contents + patch_off);
9780 patch_off += 4;
9781 }
9782 }
9783 else
9784 {
9785 bfd_put_32 (input_bfd, insn, contents + patch_off);
9786 patch_off += 4;
9787 bfd_put_32 (input_bfd,
9788 B | ((offset + 4 - patch_off) & 0x3fffffc),
9789 contents + patch_off);
9790 patch_off += 4;
9791 }
9792 BFD_ASSERT (patch_off <= input_section->size);
9793 relax_info->workaround_size = input_section->size - patch_off;
9794 }
9795 }
9796
252b5132
RH
9797 return ret;
9798}
252b5132 9799\f
25dbc73a
AM
9800/* Finish up dynamic symbol handling. We set the contents of various
9801 dynamic sections here. */
c5fccbec 9802
b34976b6 9803static bfd_boolean
25dbc73a
AM
9804ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9805 struct bfd_link_info *info,
9806 struct elf_link_hash_entry *h,
9807 Elf_Internal_Sym *sym)
e1a9cb8e 9808{
25dbc73a 9809 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
9810 struct plt_entry *ent;
9811 bfd_boolean doneone;
e1a9cb8e 9812
25dbc73a
AM
9813#ifdef DEBUG
9814 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9815 h->root.root.string);
9816#endif
e1a9cb8e 9817
25dbc73a
AM
9818 htab = ppc_elf_hash_table (info);
9819 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 9820
a6aa5195
AM
9821 doneone = FALSE;
9822 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9823 if (ent->plt.offset != (bfd_vma) -1)
9824 {
9825 if (!doneone)
9826 {
9827 Elf_Internal_Rela rela;
9828 bfd_byte *loc;
9829 bfd_vma reloc_index;
e1a9cb8e 9830
e054468f 9831 if (htab->plt_type == PLT_NEW
25f23106
AM
9832 || !htab->elf.dynamic_sections_created
9833 || h->dynindx == -1)
9d8504b1
PB
9834 reloc_index = ent->plt.offset / 4;
9835 else
9836 {
9837 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9838 / htab->plt_slot_size);
9839 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 9840 && htab->plt_type == PLT_OLD)
9d8504b1
PB
9841 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9842 }
9843
a6aa5195
AM
9844 /* This symbol has an entry in the procedure linkage table.
9845 Set it up. */
e054468f 9846 if (htab->plt_type == PLT_VXWORKS
25f23106
AM
9847 && htab->elf.dynamic_sections_created
9848 && h->dynindx != -1)
a6aa5195 9849 {
9d8504b1
PB
9850 bfd_vma got_offset;
9851 const bfd_vma *plt_entry;
5b914448 9852
9d8504b1
PB
9853 /* The first three entries in .got.plt are reserved. */
9854 got_offset = (reloc_index + 3) * 4;
9855
9856 /* Use the right PLT. */
0e1862bb 9857 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9d8504b1
PB
9858 : ppc_elf_vxworks_plt_entry;
9859
9860 /* Fill in the .plt on VxWorks. */
0e1862bb 9861 if (bfd_link_pic (info))
9d8504b1 9862 {
9d8504b1 9863 bfd_put_32 (output_bfd,
e87d4038 9864 plt_entry[0] | PPC_HA (got_offset),
9d8504b1
PB
9865 htab->plt->contents + ent->plt.offset + 0);
9866 bfd_put_32 (output_bfd,
e87d4038 9867 plt_entry[1] | PPC_LO (got_offset),
9d8504b1
PB
9868 htab->plt->contents + ent->plt.offset + 4);
9869 }
9870 else
9871 {
e87d4038 9872 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
9873
9874 bfd_put_32 (output_bfd,
e87d4038 9875 plt_entry[0] | PPC_HA (got_loc),
9d8504b1
PB
9876 htab->plt->contents + ent->plt.offset + 0);
9877 bfd_put_32 (output_bfd,
e87d4038 9878 plt_entry[1] | PPC_LO (got_loc),
9d8504b1
PB
9879 htab->plt->contents + ent->plt.offset + 4);
9880 }
9881
9882 bfd_put_32 (output_bfd, plt_entry[2],
9883 htab->plt->contents + ent->plt.offset + 8);
9884 bfd_put_32 (output_bfd, plt_entry[3],
9885 htab->plt->contents + ent->plt.offset + 12);
9886
9887 /* This instruction is an immediate load. The value loaded is
9888 the byte offset of the R_PPC_JMP_SLOT relocation from the
9889 start of the .rela.plt section. The value is stored in the
9890 low-order 16 bits of the load instruction. */
9891 /* NOTE: It appears that this is now an index rather than a
9892 prescaled offset. */
5b914448 9893 bfd_put_32 (output_bfd,
9d8504b1
PB
9894 plt_entry[4] | reloc_index,
9895 htab->plt->contents + ent->plt.offset + 16);
9896 /* This instruction is a PC-relative branch whose target is
9897 the start of the PLT section. The address of this branch
9898 instruction is 20 bytes beyond the start of this PLT entry.
9899 The address is encoded in bits 6-29, inclusive. The value
9900 stored is right-shifted by two bits, permitting a 26-bit
9901 offset. */
5b914448
AM
9902 bfd_put_32 (output_bfd,
9903 (plt_entry[5]
9d8504b1
PB
9904 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9905 htab->plt->contents + ent->plt.offset + 20);
9906 bfd_put_32 (output_bfd, plt_entry[6],
9907 htab->plt->contents + ent->plt.offset + 24);
9908 bfd_put_32 (output_bfd, plt_entry[7],
9909 htab->plt->contents + ent->plt.offset + 28);
9910
9911 /* Fill in the GOT entry corresponding to this PLT slot with
a8685210 9912 the address immediately after the "bctr" instruction
9d8504b1
PB
9913 in this PLT entry. */
9914 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9915 + htab->plt->output_offset
9916 + ent->plt.offset + 16),
9917 htab->sgotplt->contents + got_offset);
9918
0e1862bb 9919 if (!bfd_link_pic (info))
9d8504b1
PB
9920 {
9921 /* Fill in a couple of entries in .rela.plt.unloaded. */
9922 loc = htab->srelplt2->contents
9923 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9924 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9925 * sizeof (Elf32_External_Rela));
9926
9927 /* Provide the @ha relocation for the first instruction. */
9928 rela.r_offset = (htab->plt->output_section->vma
9929 + htab->plt->output_offset
9930 + ent->plt.offset + 2);
636ce3f5 9931 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
9932 R_PPC_ADDR16_HA);
9933 rela.r_addend = got_offset;
9934 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9935 loc += sizeof (Elf32_External_Rela);
9936
9937 /* Provide the @l relocation for the second instruction. */
9938 rela.r_offset = (htab->plt->output_section->vma
9939 + htab->plt->output_offset
9940 + ent->plt.offset + 6);
636ce3f5 9941 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
9942 R_PPC_ADDR16_LO);
9943 rela.r_addend = got_offset;
9944 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9945 loc += sizeof (Elf32_External_Rela);
9946
9947 /* Provide a relocation for the GOT entry corresponding to this
9948 PLT slot. Point it at the middle of the .plt entry. */
9949 rela.r_offset = (htab->sgotplt->output_section->vma
9950 + htab->sgotplt->output_offset
9951 + got_offset);
7325306f 9952 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
9953 R_PPC_ADDR32);
9954 rela.r_addend = ent->plt.offset + 16;
9955 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9956 }
9957
9958 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9959 In particular, the offset for the relocation is not the
9960 address of the PLT entry for this function, as specified
9961 by the ABI. Instead, the offset is set to the address of
9962 the GOT slot for this function. See EABI 4.4.4.1. */
9963 rela.r_offset = (htab->sgotplt->output_section->vma
9964 + htab->sgotplt->output_offset
9965 + got_offset);
9966
a6aa5195
AM
9967 }
9968 else
9969 {
e054468f 9970 asection *splt = htab->plt;
25f23106
AM
9971 if (!htab->elf.dynamic_sections_created
9972 || h->dynindx == -1)
e054468f
AM
9973 splt = htab->iplt;
9974
9975 rela.r_offset = (splt->output_section->vma
9976 + splt->output_offset
9d8504b1 9977 + ent->plt.offset);
e054468f 9978 if (htab->plt_type == PLT_OLD
25f23106
AM
9979 || !htab->elf.dynamic_sections_created
9980 || h->dynindx == -1)
9d8504b1
PB
9981 {
9982 /* We don't need to fill in the .plt. The ppc dynamic
9983 linker will fill it in. */
9984 }
9985 else
9986 {
9987 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9988 + htab->glink->output_section->vma
9989 + htab->glink->output_offset);
9990 bfd_put_32 (output_bfd, val,
e054468f 9991 splt->contents + ent->plt.offset);
9d8504b1 9992 }
a6aa5195 9993 }
e1a9cb8e 9994
a6aa5195 9995 /* Fill in the entry in the .rela.plt section. */
a6aa5195 9996 rela.r_addend = 0;
e054468f
AM
9997 if (!htab->elf.dynamic_sections_created
9998 || h->dynindx == -1)
9999 {
10000 BFD_ASSERT (h->type == STT_GNU_IFUNC
10001 && h->def_regular
10002 && (h->root.type == bfd_link_hash_defined
10003 || h->root.type == bfd_link_hash_defweak));
10004 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10005 rela.r_addend = SYM_VAL (h);
10006 }
10007 else
10008 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
e1a9cb8e 10009
25f23106
AM
10010 if (!htab->elf.dynamic_sections_created
10011 || h->dynindx == -1)
10012 loc = (htab->reliplt->contents
10013 + (htab->reliplt->reloc_count++
10014 * sizeof (Elf32_External_Rela)));
e054468f 10015 else
25f23106
AM
10016 loc = (htab->relplt->contents
10017 + reloc_index * sizeof (Elf32_External_Rela));
a6aa5195 10018 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 10019
a6aa5195
AM
10020 if (!h->def_regular)
10021 {
0eb4a168
AM
10022 /* Mark the symbol as undefined, rather than as
10023 defined in the .plt section. Leave the value if
10024 there were any relocations where pointer equality
10025 matters (this is a clue for the dynamic linker, to
10026 make function pointer comparisons work between an
10027 application and shared library), otherwise set it
10028 to zero. */
a6aa5195 10029 sym->st_shndx = SHN_UNDEF;
0eb4a168 10030 if (!h->pointer_equality_needed)
a6aa5195 10031 sym->st_value = 0;
0eb4a168
AM
10032 else if (!h->ref_regular_nonweak)
10033 {
625af618
AM
10034 /* This breaks function pointer comparisons, but
10035 that is better than breaking tests for a NULL
0eb4a168 10036 function pointer. */
0eb4a168
AM
10037 sym->st_value = 0;
10038 }
a6aa5195 10039 }
de972ffa 10040 else if (h->type == STT_GNU_IFUNC
0e1862bb 10041 && !bfd_link_pic (info))
de972ffa
AM
10042 {
10043 /* Set the value of ifunc symbols in a non-pie
10044 executable to the glink entry. This is to avoid
10045 text relocations. We can't do this for ifunc in
10046 allocate_dynrelocs, as we do for normal dynamic
10047 function symbols with plt entries, because we need
10048 to keep the original value around for the ifunc
10049 relocation. */
10050 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10051 (output_bfd, htab->glink->output_section));
5b914448
AM
10052 sym->st_value = (ent->glink_offset
10053 + htab->glink->output_offset
de972ffa
AM
10054 + htab->glink->output_section->vma);
10055 }
a6aa5195
AM
10056 doneone = TRUE;
10057 }
e1a9cb8e 10058
e054468f 10059 if (htab->plt_type == PLT_NEW
25f23106
AM
10060 || !htab->elf.dynamic_sections_created
10061 || h->dynindx == -1)
a6aa5195 10062 {
a7f2871e 10063 unsigned char *p;
e054468f 10064 asection *splt = htab->plt;
25f23106
AM
10065 if (!htab->elf.dynamic_sections_created
10066 || h->dynindx == -1)
e054468f 10067 splt = htab->iplt;
e1a9cb8e 10068
a7f2871e
AM
10069 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10070
5446cbdf 10071 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
a7f2871e
AM
10072 {
10073 bfd_put_32 (output_bfd, LWZ_11_3, p);
10074 p += 4;
10075 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10076 p += 4;
10077 bfd_put_32 (output_bfd, MR_0_3, p);
10078 p += 4;
10079 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10080 p += 4;
10081 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10082 p += 4;
10083 bfd_put_32 (output_bfd, BEQLR, p);
10084 p += 4;
10085 bfd_put_32 (output_bfd, MR_3_0, p);
10086 p += 4;
10087 bfd_put_32 (output_bfd, NOP, p);
10088 p += 4;
10089 }
10090
10091 write_glink_stub (ent, splt, p, info);
e1a9cb8e 10092
0e1862bb 10093 if (!bfd_link_pic (info))
e054468f
AM
10094 /* We only need one non-PIC glink stub. */
10095 break;
a6aa5195
AM
10096 }
10097 else
10098 break;
10099 }
e1a9cb8e 10100
25dbc73a
AM
10101 if (h->needs_copy)
10102 {
10103 asection *s;
10104 Elf_Internal_Rela rela;
10105 bfd_byte *loc;
e1a9cb8e 10106
25dbc73a 10107 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 10108
25dbc73a
AM
10109#ifdef DEBUG
10110 fprintf (stderr, ", copy");
10111#endif
e1a9cb8e 10112
25dbc73a 10113 BFD_ASSERT (h->dynindx != -1);
86bbe32f 10114
4dc4a9a5 10115 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
10116 s = htab->relsbss;
10117 else
10118 s = htab->relbss;
10119 BFD_ASSERT (s != NULL);
e1a9cb8e 10120
e87d4038 10121 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
10122 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10123 rela.r_addend = 0;
10124 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10125 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10126 }
e1a9cb8e 10127
25dbc73a
AM
10128#ifdef DEBUG
10129 fprintf (stderr, "\n");
10130#endif
e1a9cb8e 10131
25dbc73a
AM
10132 return TRUE;
10133}
10134\f
10135static enum elf_reloc_type_class
7e612e98
AM
10136ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10137 const asection *rel_sec,
10138 const Elf_Internal_Rela *rela)
e1a9cb8e 10139{
7e612e98
AM
10140 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10141
10142 if (rel_sec == htab->reliplt)
10143 return reloc_class_ifunc;
10144
25dbc73a
AM
10145 switch (ELF32_R_TYPE (rela->r_info))
10146 {
10147 case R_PPC_RELATIVE:
10148 return reloc_class_relative;
25dbc73a
AM
10149 case R_PPC_JMP_SLOT:
10150 return reloc_class_plt;
10151 case R_PPC_COPY:
10152 return reloc_class_copy;
10153 default:
10154 return reloc_class_normal;
10155 }
e1a9cb8e 10156}
25dbc73a
AM
10157\f
10158/* Finish up the dynamic sections. */
e1a9cb8e 10159
25dbc73a
AM
10160static bfd_boolean
10161ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10162 struct bfd_link_info *info)
e1a9cb8e 10163{
25dbc73a 10164 asection *sdyn;
9d8504b1 10165 asection *splt;
25dbc73a 10166 struct ppc_elf_link_hash_table *htab;
1fe44d79 10167 bfd_vma got;
e87d4038
AM
10168 bfd *dynobj;
10169 bfd_boolean ret = TRUE;
e1a9cb8e 10170
25dbc73a
AM
10171#ifdef DEBUG
10172 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10173#endif
6b0817e5 10174
25dbc73a 10175 htab = ppc_elf_hash_table (info);
9d8504b1 10176 dynobj = elf_hash_table (info)->dynobj;
3d4d4302 10177 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9d8504b1 10178 if (htab->is_vxworks)
3d4d4302 10179 splt = bfd_get_linker_section (dynobj, ".plt");
9d8504b1
PB
10180 else
10181 splt = NULL;
e1a9cb8e 10182
1fe44d79
AM
10183 got = 0;
10184 if (htab->elf.hgot != NULL)
e87d4038 10185 got = SYM_VAL (htab->elf.hgot);
1fe44d79 10186
25dbc73a 10187 if (htab->elf.dynamic_sections_created)
e1a9cb8e 10188 {
25dbc73a 10189 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 10190
25dbc73a 10191 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 10192
25dbc73a
AM
10193 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10194 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10195 for (; dyncon < dynconend; dyncon++)
10196 {
10197 Elf_Internal_Dyn dyn;
10198 asection *s;
e1a9cb8e 10199
9d8504b1 10200 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 10201
25dbc73a
AM
10202 switch (dyn.d_tag)
10203 {
10204 case DT_PLTGOT:
9d8504b1
PB
10205 if (htab->is_vxworks)
10206 s = htab->sgotplt;
10207 else
10208 s = htab->plt;
25dbc73a
AM
10209 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10210 break;
86bbe32f 10211
25dbc73a
AM
10212 case DT_PLTRELSZ:
10213 dyn.d_un.d_val = htab->relplt->size;
10214 break;
e1a9cb8e 10215
25dbc73a
AM
10216 case DT_JMPREL:
10217 s = htab->relplt;
10218 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10219 break;
2f89ff8d 10220
1fe44d79
AM
10221 case DT_PPC_GOT:
10222 dyn.d_un.d_ptr = got;
d7128ce4
AM
10223 break;
10224
9d8504b1
PB
10225 case DT_RELASZ:
10226 if (htab->is_vxworks)
10227 {
10228 if (htab->relplt)
10229 dyn.d_un.d_ptr -= htab->relplt->size;
10230 break;
10231 }
10232 continue;
10233
25dbc73a 10234 default:
7a2b07ff
NS
10235 if (htab->is_vxworks
10236 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10237 break;
25dbc73a
AM
10238 continue;
10239 }
4c45e5c9 10240
25dbc73a
AM
10241 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10242 }
10243 }
4c45e5c9 10244
3b36f7e6 10245 if (htab->got != NULL)
25dbc73a 10246 {
e79f5955
AM
10247 if (htab->elf.hgot->root.u.def.section == htab->got
10248 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
e87d4038 10249 {
e79f5955 10250 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 10251
e87d4038
AM
10252 p += htab->elf.hgot->root.u.def.value;
10253 if (htab->plt_type == PLT_OLD)
e79f5955
AM
10254 {
10255 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10256 so that a function can easily find the address of
10257 _GLOBAL_OFFSET_TABLE_. */
10258 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10259 < htab->elf.hgot->root.u.def.section->size);
10260 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10261 }
3b36f7e6 10262
e87d4038 10263 if (sdyn != NULL)
e79f5955
AM
10264 {
10265 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10266 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10267 < htab->elf.hgot->root.u.def.section->size);
10268 bfd_put_32 (output_bfd, val, p);
10269 }
e87d4038
AM
10270 }
10271 else
10272 {
8de848d8 10273 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
25f53a85
AM
10274 htab->elf.hgot->root.root.string,
10275 (htab->sgotplt != NULL
10276 ? htab->sgotplt->name : htab->got->name));
e87d4038
AM
10277 bfd_set_error (bfd_error_bad_value);
10278 ret = FALSE;
10279 }
25dbc73a
AM
10280
10281 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10282 }
10283
9d8504b1
PB
10284 /* Fill in the first entry in the VxWorks procedure linkage table. */
10285 if (splt && splt->size > 0)
10286 {
10287 /* Use the right PLT. */
0e1862bb 10288 const bfd_vma *plt_entry = (bfd_link_pic (info)
5b914448
AM
10289 ? ppc_elf_vxworks_pic_plt0_entry
10290 : ppc_elf_vxworks_plt0_entry);
9d8504b1 10291
0e1862bb 10292 if (!bfd_link_pic (info))
9d8504b1 10293 {
e87d4038 10294 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 10295
e87d4038 10296 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 10297 splt->contents + 0);
e87d4038 10298 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
10299 splt->contents + 4);
10300 }
10301 else
10302 {
10303 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10304 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10305 }
10306 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10307 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10308 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10309 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10310 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10311 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10312
0e1862bb 10313 if (! bfd_link_pic (info))
9d8504b1
PB
10314 {
10315 Elf_Internal_Rela rela;
10316 bfd_byte *loc;
10317
10318 loc = htab->srelplt2->contents;
10319
10320 /* Output the @ha relocation for the first instruction. */
10321 rela.r_offset = (htab->plt->output_section->vma
10322 + htab->plt->output_offset
10323 + 2);
636ce3f5 10324 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10325 rela.r_addend = 0;
10326 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10327 loc += sizeof (Elf32_External_Rela);
5b914448 10328
9d8504b1
PB
10329 /* Output the @l relocation for the second instruction. */
10330 rela.r_offset = (htab->plt->output_section->vma
10331 + htab->plt->output_offset
10332 + 6);
636ce3f5 10333 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10334 rela.r_addend = 0;
10335 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10336 loc += sizeof (Elf32_External_Rela);
10337
10338 /* Fix up the remaining relocations. They may have the wrong
10339 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10340 in which symbols were output. */
10341 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10342 {
10343 Elf_Internal_Rela rel;
10344
10345 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10346 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10347 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10348 loc += sizeof (Elf32_External_Rela);
10349
10350 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10351 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10352 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10353 loc += sizeof (Elf32_External_Rela);
10354
10355 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 10356 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
10357 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10358 loc += sizeof (Elf32_External_Rela);
10359 }
10360 }
10361 }
10362
e054468f
AM
10363 if (htab->glink != NULL
10364 && htab->glink->contents != NULL
10365 && htab->elf.dynamic_sections_created)
d7128ce4
AM
10366 {
10367 unsigned char *p;
10368 unsigned char *endp;
a6aa5195 10369 bfd_vma res0;
d7128ce4 10370 unsigned int i;
a6aa5195
AM
10371
10372 /*
10373 * PIC glink code is the following:
10374 *
10375 * # ith PLT code stub.
10376 * addis 11,30,(plt+(i-1)*4-got)@ha
10377 * lwz 11,(plt+(i-1)*4-got)@l(11)
10378 * mtctr 11
10379 * bctr
10380 *
10381 * # A table of branches, one for each plt entry.
176a0d42 10382 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
10383 * # addresses, so (r11 - res_0) gives the plt index * 4.
10384 * res_0: b PLTresolve
10385 * res_1: b PLTresolve
10386 * .
10387 * # Some number of entries towards the end can be nops
10388 * res_n_m3: nop
10389 * res_n_m2: nop
10390 * res_n_m1:
10391 *
10392 * PLTresolve:
10393 * addis 11,11,(1f-res_0)@ha
10394 * mflr 0
10395 * bcl 20,31,1f
10396 * 1: addi 11,11,(1b-res_0)@l
10397 * mflr 12
10398 * mtlr 0
10399 * sub 11,11,12 # r11 = index * 4
10400 * addis 12,12,(got+4-1b)@ha
10401 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10402 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10403 * mtctr 0
10404 * add 0,11,11
10405 * add 11,0,11 # r11 = index * 12 = reloc offset.
10406 * bctr
10407 */
10408 static const unsigned int pic_plt_resolve[] =
10409 {
10410 ADDIS_11_11,
10411 MFLR_0,
10412 BCL_20_31,
10413 ADDI_11_11,
10414 MFLR_12,
10415 MTLR_0,
10416 SUB_11_11_12,
10417 ADDIS_12_12,
10418 LWZ_0_12,
10419 LWZ_12_12,
10420 MTCTR_0,
10421 ADD_0_11_11,
10422 ADD_11_0_11,
10423 BCTR,
10424 NOP,
10425 NOP
10426 };
10427
176a0d42
AM
10428 /*
10429 * Non-PIC glink code is a little simpler.
10430 *
10431 * # ith PLT code stub.
10432 * lis 11,(plt+(i-1)*4)@ha
10433 * lwz 11,(plt+(i-1)*4)@l(11)
10434 * mtctr 11
10435 * bctr
10436 *
10437 * The branch table is the same, then comes
10438 *
10439 * PLTresolve:
10440 * lis 12,(got+4)@ha
10441 * addis 11,11,(-res_0)@ha
10442 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10443 * addi 11,11,(-res_0)@l # r11 = index * 4
10444 * mtctr 0
10445 * add 0,11,11
10446 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10447 * add 11,0,11 # r11 = index * 12 = reloc offset.
10448 * bctr
10449 */
d7128ce4
AM
10450 static const unsigned int plt_resolve[] =
10451 {
a6aa5195
AM
10452 LIS_12,
10453 ADDIS_11_11,
10454 LWZ_0_12,
10455 ADDI_11_11,
d7128ce4 10456 MTCTR_0,
7e8aeb9a 10457 ADD_0_11_11,
a6aa5195 10458 LWZ_12_12,
7e8aeb9a 10459 ADD_11_0_11,
d7128ce4
AM
10460 BCTR,
10461 NOP,
10462 NOP,
a6aa5195
AM
10463 NOP,
10464 NOP,
10465 NOP,
10466 NOP,
d7128ce4
AM
10467 NOP
10468 };
10469
a6aa5195
AM
10470 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10471 abort ();
10472 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
10473 abort ();
10474
a6aa5195 10475 /* Build the branch table, one for each plt entry (less one),
86b9da88 10476 and perhaps some padding. */
a6aa5195
AM
10477 p = htab->glink->contents;
10478 p += htab->glink_pltresolve;
86b9da88
AM
10479 endp = htab->glink->contents;
10480 endp += htab->glink->size - GLINK_PLTRESOLVE;
da3a2088 10481 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
86b9da88
AM
10482 {
10483 bfd_put_32 (output_bfd, B + endp - p, p);
10484 p += 4;
10485 }
10486 while (p < endp)
10487 {
10488 bfd_put_32 (output_bfd, NOP, p);
10489 p += 4;
10490 }
10491
7e8aeb9a 10492 res0 = (htab->glink_pltresolve
86b9da88
AM
10493 + htab->glink->output_section->vma
10494 + htab->glink->output_offset);
10495
da3a2088
AM
10496 if (htab->params->ppc476_workaround)
10497 {
10498 /* Ensure that a call stub at the end of a page doesn't
10499 result in prefetch over the end of the page into the
10500 glink branch table. */
10501 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10502 bfd_vma page_addr;
10503 bfd_vma glink_start = (htab->glink->output_section->vma
10504 + htab->glink->output_offset);
10505
10506 for (page_addr = res0 & -pagesize;
10507 page_addr > glink_start;
10508 page_addr -= pagesize)
10509 {
10510 /* We have a plt call stub that may need fixing. */
10511 bfd_byte *loc;
10512 unsigned int insn;
10513
10514 loc = htab->glink->contents + page_addr - 4 - glink_start;
10515 insn = bfd_get_32 (output_bfd, loc);
10516 if (insn == BCTR)
10517 {
10518 /* By alignment, we know that there must be at least
10519 one other call stub before this one. */
10520 insn = bfd_get_32 (output_bfd, loc - 16);
10521 if (insn == BCTR)
10522 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10523 else
10524 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10525 }
10526 }
10527 }
10528
86b9da88 10529 /* Last comes the PLTresolve stub. */
0e1862bb 10530 if (bfd_link_pic (info))
7e8aeb9a 10531 {
a6aa5195 10532 bfd_vma bcl;
d7128ce4 10533
a6aa5195 10534 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 10535 {
da3a2088
AM
10536 unsigned int insn = pic_plt_resolve[i];
10537
10538 if (htab->params->ppc476_workaround && insn == NOP)
10539 insn = BA + 0;
10540 bfd_put_32 (output_bfd, insn, p);
7e8aeb9a
AM
10541 p += 4;
10542 }
a6aa5195
AM
10543 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10544
10545 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10546 + htab->glink->output_section->vma
10547 + htab->glink->output_offset);
10548
10549 bfd_put_32 (output_bfd,
10550 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10551 bfd_put_32 (output_bfd,
10552 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10553 bfd_put_32 (output_bfd,
10554 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10555 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10556 {
10557 bfd_put_32 (output_bfd,
10558 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10559 bfd_put_32 (output_bfd,
10560 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10561 }
10562 else
10563 {
10564 bfd_put_32 (output_bfd,
10565 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10566 bfd_put_32 (output_bfd,
10567 LWZ_12_12 + 4, p + 9*4);
10568 }
7e8aeb9a
AM
10569 }
10570 else
d7128ce4 10571 {
a6aa5195 10572 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a 10573 {
da3a2088
AM
10574 unsigned int insn = plt_resolve[i];
10575
10576 if (htab->params->ppc476_workaround && insn == NOP)
10577 insn = BA + 0;
10578 bfd_put_32 (output_bfd, insn, p);
7e8aeb9a
AM
10579 p += 4;
10580 }
a6aa5195
AM
10581 p -= 4 * ARRAY_SIZE (plt_resolve);
10582
10583 bfd_put_32 (output_bfd,
10584 LIS_12 + PPC_HA (got + 4), p + 0*4);
10585 bfd_put_32 (output_bfd,
10586 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10587 bfd_put_32 (output_bfd,
10588 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10589 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10590 {
10591 bfd_put_32 (output_bfd,
10592 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10593 bfd_put_32 (output_bfd,
10594 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10595 }
10596 else
10597 {
10598 bfd_put_32 (output_bfd,
10599 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10600 bfd_put_32 (output_bfd,
10601 LWZ_12_12 + 4, p + 6*4);
10602 }
d7128ce4 10603 }
d7128ce4
AM
10604 }
10605
6177242a
AM
10606 if (htab->glink_eh_frame != NULL
10607 && htab->glink_eh_frame->contents != NULL)
10608 {
10609 unsigned char *p = htab->glink_eh_frame->contents;
10610 bfd_vma val;
10611
6177242a
AM
10612 p += sizeof (glink_eh_frame_cie);
10613 /* FDE length. */
6177242a
AM
10614 p += 4;
10615 /* CIE pointer. */
6177242a
AM
10616 p += 4;
10617 /* Offset to .glink. */
10618 val = (htab->glink->output_section->vma
10619 + htab->glink->output_offset);
10620 val -= (htab->glink_eh_frame->output_section->vma
10621 + htab->glink_eh_frame->output_offset);
10622 val -= p - htab->glink_eh_frame->contents;
10623 bfd_put_32 (htab->elf.dynobj, val, p);
6177242a 10624
dbaa2011 10625 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
6177242a
AM
10626 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10627 htab->glink_eh_frame,
10628 htab->glink_eh_frame->contents))
10629 return FALSE;
10630 }
10631
e87d4038 10632 return ret;
25dbc73a 10633}
e1a9cb8e 10634\f
6d00b590 10635#define TARGET_LITTLE_SYM powerpc_elf32_le_vec
252b5132 10636#define TARGET_LITTLE_NAME "elf32-powerpcle"
6d00b590 10637#define TARGET_BIG_SYM powerpc_elf32_vec
252b5132
RH
10638#define TARGET_BIG_NAME "elf32-powerpc"
10639#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 10640#define ELF_TARGET_ID PPC32_ELF_DATA
252b5132 10641#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
10642#ifdef __QNXTARGET__
10643#define ELF_MAXPAGESIZE 0x1000
04c6a44c 10644#define ELF_COMMONPAGESIZE 0x1000
d0facd1b 10645#else
252b5132 10646#define ELF_MAXPAGESIZE 0x10000
04c6a44c 10647#define ELF_COMMONPAGESIZE 0x10000
d0facd1b 10648#endif
b1342370 10649#define ELF_MINPAGESIZE 0x1000
252b5132
RH
10650#define elf_info_to_howto ppc_elf_info_to_howto
10651
10652#ifdef EM_CYGNUS_POWERPC
10653#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10654#endif
10655
10656#ifdef EM_PPC_OLD
10657#define ELF_MACHINE_ALT2 EM_PPC_OLD
10658#endif
10659
10660#define elf_backend_plt_not_loaded 1
252b5132 10661#define elf_backend_can_gc_sections 1
51b64d56 10662#define elf_backend_can_refcount 1
b491616a 10663#define elf_backend_rela_normal 1
53291d1f 10664#define elf_backend_caches_rawsize 1
252b5132 10665
43c40ab2 10666#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 10667#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 10668#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 10669#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
b9c361e0 10670#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 10671#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 10672#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 10673#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 10674
feee612b 10675#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
10676#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10677#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10678#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10679#define elf_backend_relocate_section ppc_elf_relocate_section
10680#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10681#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 10682#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
10683#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10684#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10685#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 10686#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
10687#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10688#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10689#define elf_backend_fake_sections ppc_elf_fake_sections
10690#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
b9c361e0 10691#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
c5fccbec
DJ
10692#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10693#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 10694#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 10695#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
10696#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10697#define elf_backend_final_write_processing ppc_elf_final_write_processing
10698#define elf_backend_write_section ppc_elf_write_section
551b43fd 10699#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 10700#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 10701#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 10702#define elf_backend_init_index_section _bfd_elf_init_1_index_section
b9c361e0 10703#define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
b9c361e0 10704#define elf_backend_section_processing ppc_elf_section_processing
252b5132
RH
10705
10706#include "elf32-target.h"
9d8504b1 10707
7b8e7dad
AM
10708/* FreeBSD Target */
10709
10710#undef TARGET_LITTLE_SYM
10711#undef TARGET_LITTLE_NAME
10712
10713#undef TARGET_BIG_SYM
6d00b590 10714#define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
7b8e7dad
AM
10715#undef TARGET_BIG_NAME
10716#define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10717
10718#undef ELF_OSABI
10719#define ELF_OSABI ELFOSABI_FREEBSD
10720
10721#undef elf32_bed
10722#define elf32_bed elf32_powerpc_fbsd_bed
10723
10724#include "elf32-target.h"
10725
9d8504b1
PB
10726/* VxWorks Target */
10727
10728#undef TARGET_LITTLE_SYM
10729#undef TARGET_LITTLE_NAME
10730
10731#undef TARGET_BIG_SYM
6d00b590 10732#define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
9d8504b1
PB
10733#undef TARGET_BIG_NAME
10734#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10735
7b8e7dad
AM
10736#undef ELF_OSABI
10737
d5e3d971
PB
10738/* VxWorks uses the elf default section flags for .plt. */
10739static const struct bfd_elf_special_section *
10740ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 10741{
d5e3d971
PB
10742 if (sec->name == NULL)
10743 return NULL;
10744
10745 if (strcmp (sec->name, ".plt") == 0)
10746 return _bfd_elf_get_sec_type_attr (abfd, sec);
10747
10748 return ppc_elf_get_sec_type_attr (abfd, sec);
10749}
9d8504b1
PB
10750
10751/* Like ppc_elf_link_hash_table_create, but overrides
10752 appropriately for VxWorks. */
10753static struct bfd_link_hash_table *
10754ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10755{
10756 struct bfd_link_hash_table *ret;
10757
10758 ret = ppc_elf_link_hash_table_create (abfd);
10759 if (ret)
10760 {
10761 struct ppc_elf_link_hash_table *htab
10762 = (struct ppc_elf_link_hash_table *)ret;
10763 htab->is_vxworks = 1;
4a3dc543 10764 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
10765 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10766 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10767 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10768 }
10769 return ret;
10770}
10771
10772/* Tweak magic VxWorks symbols as they are loaded. */
10773static bfd_boolean
10774ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10775 struct bfd_link_info *info,
10776 Elf_Internal_Sym *sym,
10777 const char **namep ATTRIBUTE_UNUSED,
10778 flagword *flagsp ATTRIBUTE_UNUSED,
10779 asection **secp,
10780 bfd_vma *valp)
10781{
10782 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10783 valp))
10784 return FALSE;
10785
10786 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10787}
10788
9d8504b1
PB
10789static void
10790ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10791{
10792 ppc_elf_final_write_processing(abfd, linker);
10793 elf_vxworks_final_write_processing(abfd, linker);
10794}
10795
10796/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10797 define it. */
10798#undef elf_backend_want_plt_sym
10799#define elf_backend_want_plt_sym 1
10800#undef elf_backend_want_got_plt
10801#define elf_backend_want_got_plt 1
10802#undef elf_backend_got_symbol_offset
10803#define elf_backend_got_symbol_offset 0
10804#undef elf_backend_plt_not_loaded
10805#define elf_backend_plt_not_loaded 0
10806#undef elf_backend_plt_readonly
10807#define elf_backend_plt_readonly 1
10808#undef elf_backend_got_header_size
10809#define elf_backend_got_header_size 12
10810
468392fb
AM
10811#undef bfd_elf32_get_synthetic_symtab
10812
9d8504b1
PB
10813#undef bfd_elf32_bfd_link_hash_table_create
10814#define bfd_elf32_bfd_link_hash_table_create \
10815 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
10816#undef elf_backend_add_symbol_hook
10817#define elf_backend_add_symbol_hook \
10818 ppc_elf_vxworks_add_symbol_hook
10819#undef elf_backend_link_output_symbol_hook
10820#define elf_backend_link_output_symbol_hook \
9c72ff84 10821 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
10822#undef elf_backend_final_write_processing
10823#define elf_backend_final_write_processing \
10824 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
10825#undef elf_backend_get_sec_type_attr
10826#define elf_backend_get_sec_type_attr \
10827 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
10828#undef elf_backend_emit_relocs
10829#define elf_backend_emit_relocs \
10830 elf_vxworks_emit_relocs
10831
10832#undef elf32_bed
10833#define elf32_bed ppc_elf_vxworks_bed
e054468f 10834#undef elf_backend_post_process_headers
9d8504b1
PB
10835
10836#include "elf32-target.h"
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