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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 {
2031 (*_bfd_error_handler) (_("%A: unrecognised PPC reloc number: %d"),
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
AM
2927 count = relplt->size / sizeof (Elf32_External_Rela);
2928 stub_vma = glink_vma - (bfd_vma) count * 16;
2929 /* If the stubs are those for -shared/-pie then we might have
2930 multiple stubs for each plt entry. If that is the case then
2931 there is no way to associate stubs with their plt entries short
2932 of figuring out the GOT pointer value used in the stub. */
c6dd29ce
AM
2933 if (!is_nonpic_glink_stub (abfd, glink,
2934 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
7382d32a
AM
2935 return 0;
2936
468392fb
AM
2937 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2938 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2939 return -1;
2940
468392fb
AM
2941 size = count * sizeof (asymbol);
2942 p = relplt->relocation;
2943 for (i = 0; i < count; i++, p++)
e054468f
AM
2944 {
2945 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2946 if (p->addend != 0)
2947 size += sizeof ("+0x") - 1 + 8;
2948 }
468392fb
AM
2949
2950 size += sizeof (asymbol) + sizeof ("__glink");
2951
2952 if (resolv_vma)
2953 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2954
2955 s = *ret = bfd_malloc (size);
2956 if (s == NULL)
2957 return -1;
2958
2959 names = (char *) (s + count + 1 + (resolv_vma != 0));
2960 p = relplt->relocation;
2961 for (i = 0; i < count; i++, p++)
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
AM
2971 s->section = glink;
2972 s->value = stub_vma - glink->vma;
2973 s->name = names;
2974 s->udata.p = NULL;
2975 len = strlen ((*p->sym_ptr_ptr)->name);
2976 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2977 names += len;
e054468f
AM
2978 if (p->addend != 0)
2979 {
2980 memcpy (names, "+0x", sizeof ("+0x") - 1);
2981 names += sizeof ("+0x") - 1;
2982 bfd_sprintf_vma (abfd, names, p->addend);
2983 names += strlen (names);
2984 }
468392fb
AM
2985 memcpy (names, "@plt", sizeof ("@plt"));
2986 names += sizeof ("@plt");
2987 ++s;
2988 stub_vma += 16;
2989 }
2990
2991 /* Add a symbol at the start of the glink branch table. */
86a4952b 2992 memset (s, 0, sizeof *s);
468392fb 2993 s->the_bfd = abfd;
6ba2a415 2994 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
2995 s->section = glink;
2996 s->value = glink_vma - glink->vma;
2997 s->name = names;
2998 memcpy (names, "__glink", sizeof ("__glink"));
2999 names += sizeof ("__glink");
3000 s++;
3001 count++;
3002
3003 if (resolv_vma)
3004 {
3005 /* Add a symbol for the glink PLT resolver. */
86a4952b 3006 memset (s, 0, sizeof *s);
468392fb 3007 s->the_bfd = abfd;
6ba2a415 3008 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3009 s->section = glink;
3010 s->value = resolv_vma - glink->vma;
3011 s->name = names;
3012 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3013 names += sizeof ("__glink_PLTresolve");
3014 s++;
3015 count++;
3016 }
3017
3018 return count;
3019}
3020\f
25dbc73a
AM
3021/* The following functions are specific to the ELF linker, while
3022 functions above are used generally. They appear in this file more
3023 or less in the order in which they are called. eg.
3024 ppc_elf_check_relocs is called early in the link process,
3025 ppc_elf_finish_dynamic_sections is one of the last functions
3026 called. */
252b5132 3027
a6aa5195 3028/* Track PLT entries needed for a given symbol. We might need more
a877a2b6 3029 than one glink entry per symbol when generating a pic binary. */
a6aa5195
AM
3030struct plt_entry
3031{
3032 struct plt_entry *next;
3033
3034 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3035 This field stores the offset into .got2 used to initialise the
a877a2b6
AM
3036 GOT pointer reg. It will always be at least 32768. (Current
3037 gcc always uses an offset of 32768, but ld -r will pack .got2
3038 sections together resulting in larger offsets). */
a6aa5195
AM
3039 bfd_vma addend;
3040
3041 /* The .got2 section. */
3042 asection *sec;
3043
3044 /* PLT refcount or offset. */
3045 union
3046 {
3047 bfd_signed_vma refcount;
3048 bfd_vma offset;
3049 } plt;
3050
3051 /* .glink stub offset. */
3052 bfd_vma glink_offset;
3053};
3054
1d483afe 3055/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM
3056 selects those that must be copied when linking a shared library,
3057 even when the symbol is local. */
252b5132 3058
1d483afe
AM
3059static int
3060must_be_dyn_reloc (struct bfd_link_info *info,
3061 enum elf_ppc_reloc_type r_type)
3062{
3063 switch (r_type)
3064 {
3065 default:
3066 return 1;
3067
3068 case R_PPC_REL24:
3069 case R_PPC_REL14:
3070 case R_PPC_REL14_BRTAKEN:
3071 case R_PPC_REL14_BRNTAKEN:
3072 case R_PPC_REL32:
3073 return 0;
3074
3075 case R_PPC_TPREL32:
3076 case R_PPC_TPREL16:
3077 case R_PPC_TPREL16_LO:
3078 case R_PPC_TPREL16_HI:
3079 case R_PPC_TPREL16_HA:
3080 return !info->executable;
3081 }
3082}
252b5132 3083
25dbc73a
AM
3084/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3085 copying dynamic variables from a shared lib into an app's dynbss
3086 section, and instead use a dynamic relocation to point into the
3087 shared lib. */
3088#define ELIMINATE_COPY_RELOCS 1
252b5132 3089
f95f8542
AM
3090/* Used to track dynamic relocations for local symbols. */
3091struct ppc_dyn_relocs
3092{
3093 struct ppc_dyn_relocs *next;
3094
3095 /* The input section of the reloc. */
3096 asection *sec;
3097
3098 /* Total number of relocs copied for the input section. */
3099 unsigned int count : 31;
3100
3101 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3102 unsigned int ifunc : 1;
3103};
3104
25dbc73a 3105/* PPC ELF linker hash entry. */
252b5132 3106
25dbc73a
AM
3107struct ppc_elf_link_hash_entry
3108{
3109 struct elf_link_hash_entry elf;
252b5132 3110
25dbc73a
AM
3111 /* If this symbol is used in the linker created sections, the processor
3112 specific backend uses this field to map the field into the offset
3113 from the beginning of the section. */
3114 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 3115
25dbc73a 3116 /* Track dynamic relocs copied for this symbol. */
6061a67d 3117 struct elf_dyn_relocs *dyn_relocs;
252b5132 3118
25dbc73a
AM
3119 /* Contexts in which symbol is used in the GOT (or TOC).
3120 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3121 corresponding relocs are encountered during check_relocs.
3122 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3123 indicate the corresponding GOT entry type is not needed. */
3124#define TLS_GD 1 /* GD reloc. */
3125#define TLS_LD 2 /* LD reloc. */
3126#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3127#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3128#define TLS_TLS 16 /* Any TLS reloc. */
3129#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
e054468f 3130#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
25dbc73a 3131 char tls_mask;
4dc4a9a5
DJ
3132
3133 /* Nonzero if we have seen a small data relocation referring to this
3134 symbol. */
3135 unsigned char has_sda_refs;
25dbc73a 3136};
252b5132 3137
25dbc73a
AM
3138#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3139
3140/* PPC ELF linker hash table. */
3141
3142struct ppc_elf_link_hash_table
3143{
3144 struct elf_link_hash_table elf;
3145
5446cbdf
AM
3146 /* Various options passed from the linker. */
3147 struct ppc_elf_params *params;
3148
25dbc73a
AM
3149 /* Short-cuts to get to dynamic linker sections. */
3150 asection *got;
3151 asection *relgot;
d7128ce4 3152 asection *glink;
25dbc73a
AM
3153 asection *plt;
3154 asection *relplt;
e054468f
AM
3155 asection *iplt;
3156 asection *reliplt;
25dbc73a
AM
3157 asection *dynbss;
3158 asection *relbss;
3159 asection *dynsbss;
3160 asection *relsbss;
c9a2f333 3161 elf_linker_section_t sdata[2];
25dbc73a 3162 asection *sbss;
6177242a 3163 asection *glink_eh_frame;
25dbc73a 3164
016687f8
AM
3165 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3166 asection *srelplt2;
3167
3168 /* The .got.plt section (VxWorks only)*/
3169 asection *sgotplt;
3170
1d483afe 3171 /* Shortcut to __tls_get_addr. */
25dbc73a 3172 struct elf_link_hash_entry *tls_get_addr;
252b5132 3173
016687f8
AM
3174 /* The bfd that forced an old-style PLT. */
3175 bfd *old_bfd;
5b914448 3176
25dbc73a
AM
3177 /* TLS local dynamic got entry handling. */
3178 union {
3179 bfd_signed_vma refcount;
3180 bfd_vma offset;
3181 } tlsld_got;
252b5132 3182
c6dd29ce 3183 /* Offset of branch table to PltResolve function in glink. */
d7128ce4
AM
3184 bfd_vma glink_pltresolve;
3185
3b36f7e6
AM
3186 /* Size of reserved GOT entries. */
3187 unsigned int got_header_size;
3188 /* Non-zero if allocating the header left a gap. */
3189 unsigned int got_gap;
3190
4a3dc543
RS
3191 /* The type of PLT we have chosen to use. */
3192 enum ppc_elf_plt_type plt_type;
3193
9d8504b1 3194 /* True if the target system is VxWorks. */
016687f8 3195 unsigned int is_vxworks:1;
9d8504b1
PB
3196
3197 /* The size of PLT entries. */
3198 int plt_entry_size;
3199 /* The distance between adjacent PLT slots. */
3200 int plt_slot_size;
3201 /* The size of the first PLT entry. */
3202 int plt_initial_entry_size;
016687f8 3203
87d72d41
AM
3204 /* Small local sym cache. */
3205 struct sym_cache sym_cache;
25dbc73a 3206};
252b5132 3207
94caa966
AM
3208/* Rename some of the generic section flags to better document how they
3209 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3210
3211/* Nonzero if this section has TLS related relocations. */
3212#define has_tls_reloc sec_flg0
3213
3214/* Nonzero if this section has a call to __tls_get_addr. */
3215#define has_tls_get_addr_call sec_flg1
3216
25dbc73a 3217/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 3218
25dbc73a 3219#define ppc_elf_hash_table(p) \
4dfe6ac6
NC
3220 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3221 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
252b5132 3222
25dbc73a 3223/* Create an entry in a PPC ELF linker hash table. */
252b5132 3224
25dbc73a
AM
3225static struct bfd_hash_entry *
3226ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3227 struct bfd_hash_table *table,
3228 const char *string)
252b5132 3229{
25dbc73a
AM
3230 /* Allocate the structure if it has not already been allocated by a
3231 subclass. */
3232 if (entry == NULL)
3233 {
3234 entry = bfd_hash_allocate (table,
3235 sizeof (struct ppc_elf_link_hash_entry));
3236 if (entry == NULL)
3237 return entry;
3238 }
252b5132 3239
25dbc73a
AM
3240 /* Call the allocation method of the superclass. */
3241 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3242 if (entry != NULL)
3243 {
3244 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3245 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3246 ppc_elf_hash_entry (entry)->tls_mask = 0;
5240d94d 3247 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
25dbc73a 3248 }
252b5132 3249
25dbc73a 3250 return entry;
252b5132 3251}
3dab13f6 3252
25dbc73a 3253/* Create a PPC ELF linker hash table. */
3dab13f6 3254
25dbc73a
AM
3255static struct bfd_link_hash_table *
3256ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 3257{
25dbc73a 3258 struct ppc_elf_link_hash_table *ret;
da3a2088 3259 static struct ppc_elf_params default_params = { PLT_OLD, 0, 1, 0, 0, 12 };
3dab13f6 3260
25dbc73a
AM
3261 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3262 if (ret == NULL)
3263 return NULL;
3dab13f6 3264
66eb6687
AM
3265 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3266 ppc_elf_link_hash_newfunc,
4dfe6ac6
NC
3267 sizeof (struct ppc_elf_link_hash_entry),
3268 PPC32_ELF_DATA))
3dab13f6 3269 {
25dbc73a
AM
3270 free (ret);
3271 return NULL;
3272 }
58111eb7 3273
a6aa5195
AM
3274 ret->elf.init_plt_refcount.refcount = 0;
3275 ret->elf.init_plt_refcount.glist = NULL;
3276 ret->elf.init_plt_offset.offset = 0;
3277 ret->elf.init_plt_offset.glist = NULL;
3278
db434ba0
AM
3279 ret->params = &default_params;
3280
c9a2f333
AM
3281 ret->sdata[0].name = ".sdata";
3282 ret->sdata[0].sym_name = "_SDA_BASE_";
3283 ret->sdata[0].bss_name = ".sbss";
3284
3285 ret->sdata[1].name = ".sdata2";
3286 ret->sdata[1].sym_name = "_SDA2_BASE_";
3287 ret->sdata[1].bss_name = ".sbss2";
3288
9d8504b1
PB
3289 ret->plt_entry_size = 12;
3290 ret->plt_slot_size = 8;
3291 ret->plt_initial_entry_size = 72;
9d8504b1 3292
25dbc73a
AM
3293 return &ret->elf.root;
3294}
3dab13f6 3295
5446cbdf
AM
3296/* Hook linker params into hash table. */
3297
3298void
3299ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3300{
3301 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3302
3303 if (htab)
3304 htab->params = params;
3305}
3306
9d8504b1 3307/* Create .got and the related sections. */
3dab13f6 3308
25dbc73a
AM
3309static bfd_boolean
3310ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3311{
3312 struct ppc_elf_link_hash_table *htab;
3313 asection *s;
3314 flagword flags;
3dab13f6 3315
25dbc73a
AM
3316 if (!_bfd_elf_create_got_section (abfd, info))
3317 return FALSE;
3dab13f6 3318
25dbc73a 3319 htab = ppc_elf_hash_table (info);
3d4d4302 3320 htab->got = s = bfd_get_linker_section (abfd, ".got");
25dbc73a
AM
3321 if (s == NULL)
3322 abort ();
3dab13f6 3323
9d8504b1
PB
3324 if (htab->is_vxworks)
3325 {
3d4d4302 3326 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
9d8504b1
PB
3327 if (!htab->sgotplt)
3328 abort ();
3329 }
3330 else
3331 {
3332 /* The powerpc .got has a blrl instruction in it. Mark it
3333 executable. */
3334 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3335 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3336 if (!bfd_set_section_flags (abfd, s, flags))
3337 return FALSE;
3338 }
3dab13f6 3339
3d4d4302 3340 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
64e77c6d
L
3341 if (!htab->relgot)
3342 abort ();
3dab13f6 3343
25dbc73a
AM
3344 return TRUE;
3345}
3dab13f6 3346
93d1b056
AM
3347/* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3348 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3349 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3350
3351static bfd_boolean
3352ppc_elf_create_linker_section (bfd *abfd,
3353 struct bfd_link_info *info,
3354 flagword flags,
3355 elf_linker_section_t *lsect)
3356{
3357 asection *s;
3358
3359 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3360 | SEC_LINKER_CREATED);
3361
3362 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3363 if (s == NULL)
3364 return FALSE;
3365 lsect->section = s;
3366
3367 /* Define the sym on the first section of this name. */
3368 s = bfd_get_section_by_name (abfd, lsect->name);
3369
3370 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3371 if (lsect->sym == NULL)
3372 return FALSE;
3373 lsect->sym->root.u.def.value = 0x8000;
3374 return TRUE;
3375}
3376
e054468f
AM
3377static bfd_boolean
3378ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3379{
3380 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3381 asection *s;
3382 flagword flags;
3383
3384 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3385 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3386 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3387 htab->glink = s;
3388 if (s == NULL
5446cbdf
AM
3389 || !bfd_set_section_alignment (abfd, s,
3390 htab->params->ppc476_workaround ? 6 : 4))
e054468f
AM
3391 return FALSE;
3392
6177242a
AM
3393 if (!info->no_ld_generated_unwind_info)
3394 {
3395 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3396 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3397 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3398 htab->glink_eh_frame = s;
3399 if (s == NULL
3400 || !bfd_set_section_alignment (abfd, s, 2))
3401 return FALSE;
3402 }
3403
e054468f
AM
3404 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3405 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3406 htab->iplt = s;
3407 if (s == NULL
3408 || !bfd_set_section_alignment (abfd, s, 4))
3409 return FALSE;
3410
3411 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3412 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3413 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
e054468f
AM
3414 htab->reliplt = s;
3415 if (s == NULL
3416 || ! bfd_set_section_alignment (abfd, s, 2))
3417 return FALSE;
93d1b056
AM
3418
3419 if (!ppc_elf_create_linker_section (abfd, info, 0,
3420 &htab->sdata[0]))
3421 return FALSE;
3422
3423 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3424 &htab->sdata[1]))
3425 return FALSE;
3426
e054468f
AM
3427 return TRUE;
3428}
3429
25dbc73a
AM
3430/* We have to create .dynsbss and .rela.sbss here so that they get mapped
3431 to output sections (just like _bfd_elf_create_dynamic_sections has
3432 to create .dynbss and .rela.bss). */
3dab13f6 3433
25dbc73a
AM
3434static bfd_boolean
3435ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3436{
3437 struct ppc_elf_link_hash_table *htab;
3438 asection *s;
3439 flagword flags;
3dab13f6 3440
25dbc73a 3441 htab = ppc_elf_hash_table (info);
3dab13f6 3442
25dbc73a
AM
3443 if (htab->got == NULL
3444 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
3445 return FALSE;
3446
25dbc73a
AM
3447 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3448 return FALSE;
3dab13f6 3449
e054468f
AM
3450 if (htab->glink == NULL
3451 && !ppc_elf_create_glink (abfd, info))
d7128ce4 3452 return FALSE;
3dab13f6 3453
3d4d4302 3454 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
14b2f831
AM
3455 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3456 SEC_ALLOC | SEC_LINKER_CREATED);
3b36f7e6 3457 htab->dynsbss = s;
3496cb2a 3458 if (s == NULL)
25dbc73a 3459 return FALSE;
3dab13f6 3460
25dbc73a
AM
3461 if (! info->shared)
3462 {
3d4d4302 3463 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
e054468f
AM
3464 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3465 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3466 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 3467 htab->relsbss = s;
25dbc73a 3468 if (s == NULL
25dbc73a
AM
3469 || ! bfd_set_section_alignment (abfd, s, 2))
3470 return FALSE;
3471 }
3dab13f6 3472
711de32c
RS
3473 if (htab->is_vxworks
3474 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3475 return FALSE;
9d8504b1 3476
3d4d4302
AM
3477 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3478 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
25dbc73a
AM
3479 if (s == NULL)
3480 abort ();
3dab13f6 3481
3b36f7e6 3482 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
3483 if (htab->plt_type == PLT_VXWORKS)
3484 /* The VxWorks PLT is a loaded section with contents. */
3485 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
3486 return bfd_set_section_flags (abfd, s, flags);
3487}
3dab13f6 3488
25dbc73a 3489/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 3490
25dbc73a 3491static void
fcfa13d2 3492ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
3493 struct elf_link_hash_entry *dir,
3494 struct elf_link_hash_entry *ind)
3495{
3496 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 3497
25dbc73a
AM
3498 edir = (struct ppc_elf_link_hash_entry *) dir;
3499 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 3500
c79d6685
AM
3501 edir->tls_mask |= eind->tls_mask;
3502 edir->has_sda_refs |= eind->has_sda_refs;
3503
3504 /* If called to transfer flags for a weakdef during processing
3505 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3506 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3507 if (!(ELIMINATE_COPY_RELOCS
3508 && eind->elf.root.type != bfd_link_hash_indirect
3509 && edir->elf.dynamic_adjusted))
3510 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3511
3512 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3513 edir->elf.ref_regular |= eind->elf.ref_regular;
3514 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3515 edir->elf.needs_plt |= eind->elf.needs_plt;
3516 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3517
25dbc73a
AM
3518 if (eind->dyn_relocs != NULL)
3519 {
3520 if (edir->dyn_relocs != NULL)
3dab13f6 3521 {
6061a67d
AM
3522 struct elf_dyn_relocs **pp;
3523 struct elf_dyn_relocs *p;
3dab13f6 3524
fcfa13d2 3525 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
3526 list. Merge any entries against the same section. */
3527 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 3528 {
6061a67d 3529 struct elf_dyn_relocs *q;
25dbc73a
AM
3530
3531 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3532 if (q->sec == p->sec)
3533 {
3534 q->pc_count += p->pc_count;
3535 q->count += p->count;
3536 *pp = p->next;
3537 break;
3538 }
3539 if (q == NULL)
3540 pp = &p->next;
3dab13f6 3541 }
25dbc73a 3542 *pp = edir->dyn_relocs;
3dab13f6 3543 }
25dbc73a
AM
3544
3545 edir->dyn_relocs = eind->dyn_relocs;
3546 eind->dyn_relocs = NULL;
3dab13f6 3547 }
3dab13f6 3548
68ba6d40
AM
3549 /* If we were called to copy over info for a weak sym, that's all.
3550 You might think dyn_relocs need not be copied over; After all,
3551 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 3552 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM
3553 code in ppc_elf_adjust_dynamic_symbol needs to check for
3554 dyn_relocs in read-only sections, and it does so on what is the
3555 DIR sym here. */
3556 if (eind->elf.root.type != bfd_link_hash_indirect)
3557 return;
3558
a6aa5195
AM
3559 /* Copy over the GOT refcount entries that we may have already seen to
3560 the symbol which just became indirect. */
fcfa13d2
AM
3561 edir->elf.got.refcount += eind->elf.got.refcount;
3562 eind->elf.got.refcount = 0;
a6aa5195
AM
3563
3564 /* And plt entries. */
3565 if (eind->elf.plt.plist != NULL)
3566 {
3567 if (edir->elf.plt.plist != NULL)
3568 {
3569 struct plt_entry **entp;
3570 struct plt_entry *ent;
3571
3572 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3573 {
3574 struct plt_entry *dent;
3575
3576 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3577 if (dent->sec == ent->sec && dent->addend == ent->addend)
3578 {
3579 dent->plt.refcount += ent->plt.refcount;
3580 *entp = ent->next;
3581 break;
3582 }
3583 if (dent == NULL)
3584 entp = &ent->next;
3585 }
3586 *entp = edir->elf.plt.plist;
3587 }
3588
3589 edir->elf.plt.plist = eind->elf.plt.plist;
3590 eind->elf.plt.plist = NULL;
3591 }
3592
fcfa13d2 3593 if (eind->elf.dynindx != -1)
25dbc73a 3594 {
fcfa13d2
AM
3595 if (edir->elf.dynindx != -1)
3596 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3597 edir->elf.dynstr_index);
a6aa5195
AM
3598 edir->elf.dynindx = eind->elf.dynindx;
3599 edir->elf.dynstr_index = eind->elf.dynstr_index;
3600 eind->elf.dynindx = -1;
3601 eind->elf.dynstr_index = 0;
25dbc73a 3602 }
25dbc73a 3603}
3dab13f6 3604
25dbc73a
AM
3605/* Hook called by the linker routine which adds symbols from an object
3606 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3607
25dbc73a
AM
3608static bfd_boolean
3609ppc_elf_add_symbol_hook (bfd *abfd,
3610 struct bfd_link_info *info,
3611 Elf_Internal_Sym *sym,
3612 const char **namep ATTRIBUTE_UNUSED,
3613 flagword *flagsp ATTRIBUTE_UNUSED,
3614 asection **secp,
3615 bfd_vma *valp)
3616{
3617 if (sym->st_shndx == SHN_COMMON
3618 && !info->relocatable
0c8d6e5c
AM
3619 && is_ppc_elf (info->output_bfd)
3620 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
3621 {
3622 /* Common symbols less than or equal to -G nn bytes are automatically
3623 put into .sbss. */
3624 struct ppc_elf_link_hash_table *htab;
3dab13f6 3625
25dbc73a
AM
3626 htab = ppc_elf_hash_table (info);
3627 if (htab->sbss == NULL)
3628 {
644285ef 3629 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3630
644285ef
AM
3631 if (!htab->elf.dynobj)
3632 htab->elf.dynobj = abfd;
3633
3496cb2a
L
3634 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3635 ".sbss",
3636 flags);
3637 if (htab->sbss == NULL)
25dbc73a 3638 return FALSE;
3dab13f6 3639 }
3dab13f6 3640
25dbc73a
AM
3641 *secp = htab->sbss;
3642 *valp = sym->st_size;
3643 }
3dab13f6 3644
f1885d1e
AM
3645 if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3646 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
3647 && (abfd->flags & DYNAMIC) == 0
3648 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
f64b2e8d 3649 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
e054468f 3650
25dbc73a 3651 return TRUE;
3dab13f6
AM
3652}
3653\f
25dbc73a
AM
3654/* Find a linker generated pointer with a given addend and type. */
3655
3656static elf_linker_section_pointers_t *
3657elf_find_pointer_linker_section
3658 (elf_linker_section_pointers_t *linker_pointers,
3659 bfd_vma addend,
3660 elf_linker_section_t *lsect)
252b5132 3661{
25dbc73a
AM
3662 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3663 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3664 return linker_pointers;
252b5132 3665
25dbc73a
AM
3666 return NULL;
3667}
3668
3669/* Allocate a pointer to live in a linker created section. */
3670
3671static bfd_boolean
93d1b056
AM
3672elf_allocate_pointer_linker_section (bfd *abfd,
3673 elf_linker_section_t *lsect,
3674 struct elf_link_hash_entry *h,
3675 const Elf_Internal_Rela *rel)
25dbc73a
AM
3676{
3677 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3678 elf_linker_section_pointers_t *linker_section_ptr;
3679 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3680 bfd_size_type amt;
3681
3682 BFD_ASSERT (lsect != NULL);
3683
3684 /* Is this a global symbol? */
3685 if (h != NULL)
3686 {
3687 struct ppc_elf_link_hash_entry *eh;
3688
3689 /* Has this symbol already been allocated? If so, our work is done. */
3690 eh = (struct ppc_elf_link_hash_entry *) h;
3691 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3692 rel->r_addend,
3693 lsect))
3694 return TRUE;
3695
3696 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3697 }
3698 else
3699 {
0c8d6e5c 3700 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3701
25dbc73a
AM
3702 /* Allocation of a pointer to a local symbol. */
3703 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3704
3705 /* Allocate a table to hold the local symbols if first time. */
3706 if (!ptr)
3707 {
0ffa91dd 3708 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3709
3710 amt = num_symbols;
3711 amt *= sizeof (elf_linker_section_pointers_t *);
3712 ptr = bfd_zalloc (abfd, amt);
3713
3714 if (!ptr)
3715 return FALSE;
3716
3717 elf_local_ptr_offsets (abfd) = ptr;
3718 }
3719
3720 /* Has this symbol already been allocated? If so, our work is done. */
3721 if (elf_find_pointer_linker_section (ptr[r_symndx],
3722 rel->r_addend,
3723 lsect))
3724 return TRUE;
252b5132 3725
25dbc73a 3726 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3727 }
41fcb14e 3728
25dbc73a
AM
3729 /* Allocate space for a pointer in the linker section, and allocate
3730 a new pointer record from internal memory. */
3731 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3732 amt = sizeof (elf_linker_section_pointers_t);
3733 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3734
25dbc73a 3735 if (!linker_section_ptr)
7619e7c7 3736 return FALSE;
41fcb14e 3737
25dbc73a
AM
3738 linker_section_ptr->next = *ptr_linker_section_ptr;
3739 linker_section_ptr->addend = rel->r_addend;
3740 linker_section_ptr->lsect = lsect;
25dbc73a 3741 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3742
93d1b056
AM
3743 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3744 return FALSE;
25dbc73a
AM
3745 linker_section_ptr->offset = lsect->section->size;
3746 lsect->section->size += 4;
7619e7c7 3747
25dbc73a
AM
3748#ifdef DEBUG
3749 fprintf (stderr,
3750 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3751 lsect->name, (long) linker_section_ptr->offset,
3752 (long) lsect->section->size);
3753#endif
7619e7c7
AM
3754
3755 return TRUE;
41fcb14e
AM
3756}
3757
e054468f 3758static struct plt_entry **
25dbc73a
AM
3759update_local_sym_info (bfd *abfd,
3760 Elf_Internal_Shdr *symtab_hdr,
3761 unsigned long r_symndx,
3762 int tls_type)
252b5132 3763{
25dbc73a 3764 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
e054468f 3765 struct plt_entry **local_plt;
25dbc73a 3766 char *local_got_tls_masks;
252b5132 3767
25dbc73a 3768 if (local_got_refcounts == NULL)
252b5132 3769 {
25dbc73a
AM
3770 bfd_size_type size = symtab_hdr->sh_info;
3771
e054468f
AM
3772 size *= (sizeof (*local_got_refcounts)
3773 + sizeof (*local_plt)
3774 + sizeof (*local_got_tls_masks));
25dbc73a
AM
3775 local_got_refcounts = bfd_zalloc (abfd, size);
3776 if (local_got_refcounts == NULL)
e054468f 3777 return NULL;
25dbc73a 3778 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3779 }
41fcb14e 3780
e054468f
AM
3781 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3782 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
25dbc73a 3783 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
3784 if (tls_type != PLT_IFUNC)
3785 local_got_refcounts[r_symndx] += 1;
3786 return local_plt + r_symndx;
25dbc73a 3787}
41fcb14e 3788
a6aa5195 3789static bfd_boolean
3ec01793 3790update_plt_info (bfd *abfd, struct plt_entry **plist,
a6aa5195
AM
3791 asection *sec, bfd_vma addend)
3792{
3793 struct plt_entry *ent;
3794
32af9f6e
AM
3795 if (addend < 32768)
3796 sec = NULL;
3ec01793 3797 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3798 if (ent->sec == sec && ent->addend == addend)
3799 break;
3800 if (ent == NULL)
3801 {
3802 bfd_size_type amt = sizeof (*ent);
3803 ent = bfd_alloc (abfd, amt);
3804 if (ent == NULL)
3805 return FALSE;
3ec01793 3806 ent->next = *plist;
a6aa5195
AM
3807 ent->sec = sec;
3808 ent->addend = addend;
3809 ent->plt.refcount = 0;
3ec01793 3810 *plist = ent;
a6aa5195
AM
3811 }
3812 ent->plt.refcount += 1;
3813 return TRUE;
3814}
3815
3816static struct plt_entry *
3ec01793 3817find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
a6aa5195
AM
3818{
3819 struct plt_entry *ent;
3820
3821 if (addend < 32768)
3822 sec = NULL;
3ec01793 3823 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3824 if (ent->sec == sec && ent->addend == addend)
3825 break;
3826 return ent;
3827}
3828
e054468f
AM
3829static bfd_boolean
3830is_branch_reloc (enum elf_ppc_reloc_type r_type)
3831{
3832 return (r_type == R_PPC_PLTREL24
3833 || r_type == R_PPC_LOCAL24PC
3834 || r_type == R_PPC_REL24
3835 || r_type == R_PPC_REL14
3836 || r_type == R_PPC_REL14_BRTAKEN
3837 || r_type == R_PPC_REL14_BRNTAKEN
3838 || r_type == R_PPC_ADDR24
3839 || r_type == R_PPC_ADDR14
3840 || r_type == R_PPC_ADDR14_BRTAKEN
3841 || r_type == R_PPC_ADDR14_BRNTAKEN);
3842}
3843
25dbc73a
AM
3844static void
3845bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3846{
3847 (*_bfd_error_handler)
3848 (_("%B: relocation %s cannot be used when making a shared object"),
3849 abfd,
3850 ppc_elf_howto_table[r_type]->name);
3851 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3852}
3853
25dbc73a
AM
3854/* Look through the relocs for a section during the first phase, and
3855 allocate space in the global offset table or procedure linkage
3856 table. */
252b5132 3857
b34976b6 3858static bfd_boolean
25dbc73a
AM
3859ppc_elf_check_relocs (bfd *abfd,
3860 struct bfd_link_info *info,
3861 asection *sec,
3862 const Elf_Internal_Rela *relocs)
252b5132 3863{
7619e7c7 3864 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3865 Elf_Internal_Shdr *symtab_hdr;
3866 struct elf_link_hash_entry **sym_hashes;
3867 const Elf_Internal_Rela *rel;
3868 const Elf_Internal_Rela *rel_end;
a6aa5195 3869 asection *got2, *sreloc;
727fc41e 3870 struct elf_link_hash_entry *tga;
25dbc73a
AM
3871
3872 if (info->relocatable)
3873 return TRUE;
252b5132 3874
c87b5a93
AM
3875 /* Don't do anything special with non-loaded, non-alloced sections.
3876 In particular, any relocs in such sections should not affect GOT
3877 and PLT reference counting (ie. we don't allow them to create GOT
3878 or PLT entries), there's no possibility or desire to optimize TLS
3879 relocs, and there's not much point in propagating relocs to shared
3880 libs that the dynamic linker won't relocate. */
3881 if ((sec->flags & SEC_ALLOC) == 0)
3882 return TRUE;
3883
252b5132 3884#ifdef DEBUG
25dbc73a
AM
3885 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3886 sec, abfd);
252b5132
RH
3887#endif
3888
0c8d6e5c 3889 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3890
25dbc73a
AM
3891 /* Initialize howto table if not already done. */
3892 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3893 ppc_elf_howto_init ();
3894
7619e7c7 3895 htab = ppc_elf_hash_table (info);
25f23106
AM
3896 if (htab->glink == NULL)
3897 {
3898 if (htab->elf.dynobj == NULL)
3899 htab->elf.dynobj = abfd;
3900 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3901 return FALSE;
3902 }
727fc41e
AM
3903 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3904 FALSE, FALSE, TRUE);
0ffa91dd 3905 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 3906 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3907 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
3908 sreloc = NULL;
3909
3910 rel_end = relocs + sec->reloc_count;
3911 for (rel = relocs; rel < rel_end; rel++)
3912 {
3913 unsigned long r_symndx;
3914 enum elf_ppc_reloc_type r_type;
3915 struct elf_link_hash_entry *h;
727fc41e 3916 int tls_type;
25dbc73a
AM
3917
3918 r_symndx = ELF32_R_SYM (rel->r_info);
3919 if (r_symndx < symtab_hdr->sh_info)
3920 h = NULL;
3921 else
973a3492
L
3922 {
3923 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3924 while (h->root.type == bfd_link_hash_indirect
3925 || h->root.type == bfd_link_hash_warning)
3926 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM
3927
3928 /* PR15323, ref flags aren't set for references in the same
3929 object. */
3930 h->root.non_ir_ref = 1;
973a3492 3931 }
25dbc73a
AM
3932
3933 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3934 This shows up in particular in an R_PPC_ADDR32 in the eabi
3935 startup code. */
3b36f7e6
AM
3936 if (h != NULL
3937 && htab->got == NULL
3938 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3939 {
3b36f7e6
AM
3940 if (htab->elf.dynobj == NULL)
3941 htab->elf.dynobj = abfd;
3942 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3943 return FALSE;
3944 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3945 }
252b5132 3946
727fc41e 3947 tls_type = 0;
de972ffa 3948 r_type = ELF32_R_TYPE (rel->r_info);
06a162cf 3949 if (h == NULL && !htab->is_vxworks)
e054468f 3950 {
06a162cf
AM
3951 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3952 abfd, r_symndx);
3953 if (isym == NULL)
3954 return FALSE;
3955
0bed072f 3956 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
e054468f 3957 {
06a162cf 3958 struct plt_entry **ifunc;
06a162cf 3959
0bed072f 3960 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
06a162cf
AM
3961 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3962 PLT_IFUNC);
3963 if (ifunc == NULL)
e054468f
AM
3964 return FALSE;
3965
06a162cf
AM
3966 /* STT_GNU_IFUNC symbols must have a PLT entry;
3967 In a non-pie executable even when there are
3968 no plt calls. */
0bed072f
AM
3969 if (!info->shared
3970 || is_branch_reloc (r_type))
e054468f 3971 {
0bed072f
AM
3972 bfd_vma addend = 0;
3973 if (r_type == R_PPC_PLTREL24)
3974 {
3975 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3976 if (info->shared)
3977 addend = rel->r_addend;
3978 }
3979 if (!update_plt_info (abfd, ifunc, got2, addend))
3980 return FALSE;
e054468f
AM
3981 }
3982 }
25f23106
AM
3983 }
3984
de972ffa
AM
3985 if (!htab->is_vxworks
3986 && is_branch_reloc (r_type)
3987 && h != NULL
3988 && h == tga)
25f23106 3989 {
de972ffa
AM
3990 if (rel != relocs
3991 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3992 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3993 /* We have a new-style __tls_get_addr call with a marker
3994 reloc. */
3995 ;
3996 else
3997 /* Mark this section as having an old-style call. */
3998 sec->has_tls_get_addr_call = 1;
e054468f 3999 }
727fc41e 4000
25dbc73a
AM
4001 switch (r_type)
4002 {
727fc41e
AM
4003 case R_PPC_TLSGD:
4004 case R_PPC_TLSLD:
4005 /* These special tls relocs tie a call to __tls_get_addr with
4006 its parameter symbol. */
4007 break;
4008
25dbc73a
AM
4009 case R_PPC_GOT_TLSLD16:
4010 case R_PPC_GOT_TLSLD16_LO:
4011 case R_PPC_GOT_TLSLD16_HI:
4012 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4013 tls_type = TLS_TLS | TLS_LD;
4014 goto dogottls;
252b5132 4015
25dbc73a
AM
4016 case R_PPC_GOT_TLSGD16:
4017 case R_PPC_GOT_TLSGD16_LO:
4018 case R_PPC_GOT_TLSGD16_HI:
4019 case R_PPC_GOT_TLSGD16_HA:
4020 tls_type = TLS_TLS | TLS_GD;
4021 goto dogottls;
4022
4023 case R_PPC_GOT_TPREL16:
4024 case R_PPC_GOT_TPREL16_LO:
4025 case R_PPC_GOT_TPREL16_HI:
4026 case R_PPC_GOT_TPREL16_HA:
afb93314 4027 if (info->shared)
25dbc73a
AM
4028 info->flags |= DF_STATIC_TLS;
4029 tls_type = TLS_TLS | TLS_TPREL;
4030 goto dogottls;
4031
4032 case R_PPC_GOT_DTPREL16:
4033 case R_PPC_GOT_DTPREL16_LO:
4034 case R_PPC_GOT_DTPREL16_HI:
4035 case R_PPC_GOT_DTPREL16_HA:
4036 tls_type = TLS_TLS | TLS_DTPREL;
4037 dogottls:
4038 sec->has_tls_reloc = 1;
4039 /* Fall thru */
252b5132 4040
25dbc73a
AM
4041 /* GOT16 relocations */
4042 case R_PPC_GOT16:
4043 case R_PPC_GOT16_LO:
4044 case R_PPC_GOT16_HI:
4045 case R_PPC_GOT16_HA:
4046 /* This symbol requires a global offset table entry. */
4047 if (htab->got == NULL)
4048 {
4049 if (htab->elf.dynobj == NULL)
4050 htab->elf.dynobj = abfd;
4051 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4052 return FALSE;
4053 }
4054 if (h != NULL)
4055 {
4056 h->got.refcount += 1;
4057 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4058 }
4059 else
4060 /* This is a global offset table entry for a local symbol. */
4061 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4062 return FALSE;
91e21fb7
AM
4063
4064 /* We may also need a plt entry if the symbol turns out to be
4065 an ifunc. */
4066 if (h != NULL && !info->shared)
4067 {
4068 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4069 return FALSE;
4070 }
25dbc73a 4071 break;
252b5132 4072
25dbc73a
AM
4073 /* Indirect .sdata relocation. */
4074 case R_PPC_EMB_SDAI16:
4075 if (info->shared)
4076 {
4077 bad_shared_reloc (abfd, r_type);
4078 return FALSE;
4079 }
93d1b056
AM
4080 htab->sdata[0].sym->ref_regular = 1;
4081 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4082 h, rel))
25dbc73a 4083 return FALSE;
046183de
AM
4084 if (h != NULL)
4085 {
4086 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4087 h->non_got_ref = TRUE;
4088 }
25dbc73a 4089 break;
252b5132 4090
25dbc73a
AM
4091 /* Indirect .sdata2 relocation. */
4092 case R_PPC_EMB_SDA2I16:
4093 if (info->shared)
4094 {
4095 bad_shared_reloc (abfd, r_type);
4096 return FALSE;
4097 }
93d1b056
AM
4098 htab->sdata[1].sym->ref_regular = 1;
4099 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4100 h, rel))
25dbc73a 4101 return FALSE;
046183de
AM
4102 if (h != NULL)
4103 {
4104 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4105 h->non_got_ref = TRUE;
4106 }
25dbc73a 4107 break;
252b5132 4108
93d1b056
AM
4109 case R_PPC_SDAREL16:
4110 htab->sdata[0].sym->ref_regular = 1;
4111 /* Fall thru */
4112
b9c361e0
JL
4113 case R_PPC_VLE_SDAREL_LO16A:
4114 case R_PPC_VLE_SDAREL_LO16D:
4115 case R_PPC_VLE_SDAREL_HI16A:
4116 case R_PPC_VLE_SDAREL_HI16D:
4117 case R_PPC_VLE_SDAREL_HA16A:
4118 case R_PPC_VLE_SDAREL_HA16D:
046183de
AM
4119 if (h != NULL)
4120 {
4121 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4122 h->non_got_ref = TRUE;
4123 }
4124 break;
4125
b9c361e0
JL
4126 case R_PPC_VLE_REL8:
4127 case R_PPC_VLE_REL15:
4128 case R_PPC_VLE_REL24:
4129 case R_PPC_VLE_LO16A:
4130 case R_PPC_VLE_LO16D:
4131 case R_PPC_VLE_HI16A:
4132 case R_PPC_VLE_HI16D:
4133 case R_PPC_VLE_HA16A:
4134 case R_PPC_VLE_HA16D:
4135 break;
4136
25dbc73a 4137 case R_PPC_EMB_SDA2REL:
046183de
AM
4138 if (info->shared)
4139 {
4140 bad_shared_reloc (abfd, r_type);
4141 return FALSE;
4142 }
93d1b056 4143 htab->sdata[1].sym->ref_regular = 1;
046183de
AM
4144 if (h != NULL)
4145 {
4146 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4147 h->non_got_ref = TRUE;
4148 }
4149 break;
4150
b9c361e0
JL
4151 case R_PPC_VLE_SDA21_LO:
4152 case R_PPC_VLE_SDA21:
25dbc73a
AM
4153 case R_PPC_EMB_SDA21:
4154 case R_PPC_EMB_RELSDA:
046183de
AM
4155 if (info->shared)
4156 {
4157 bad_shared_reloc (abfd, r_type);
4158 return FALSE;
4159 }
046183de
AM
4160 if (h != NULL)
4161 {
4162 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4163 h->non_got_ref = TRUE;
4164 }
4165 break;
4166
25dbc73a
AM
4167 case R_PPC_EMB_NADDR32:
4168 case R_PPC_EMB_NADDR16:
4169 case R_PPC_EMB_NADDR16_LO:
4170 case R_PPC_EMB_NADDR16_HI:
4171 case R_PPC_EMB_NADDR16_HA:
4172 if (info->shared)
4173 {
4174 bad_shared_reloc (abfd, r_type);
4175 return FALSE;
4176 }
4dc4a9a5 4177 if (h != NULL)
046183de 4178 h->non_got_ref = TRUE;
25dbc73a 4179 break;
252b5132 4180
25dbc73a 4181 case R_PPC_PLTREL24:
de972ffa 4182 if (h == NULL)
6d78d0b9
AM
4183 break;
4184 /* Fall through */
4185 case R_PPC_PLT32:
25dbc73a
AM
4186 case R_PPC_PLTREL32:
4187 case R_PPC_PLT16_LO:
4188 case R_PPC_PLT16_HI:
4189 case R_PPC_PLT16_HA:
4190#ifdef DEBUG
4191 fprintf (stderr, "Reloc requires a PLT entry\n");
4192#endif
4193 /* This symbol requires a procedure linkage table entry. We
4194 actually build the entry in finish_dynamic_symbol,
4195 because this might be a case of linking PIC code without
4196 linking in any dynamic objects, in which case we don't
4197 need to generate a procedure linkage table after all. */
7619e7c7 4198
25dbc73a
AM
4199 if (h == NULL)
4200 {
4201 /* It does not make sense to have a procedure linkage
4202 table entry for a local symbol. */
8de848d8 4203 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
25f53a85
AM
4204 abfd, sec, rel->r_offset,
4205 ppc_elf_howto_table[r_type]->name);
25dbc73a
AM
4206 bfd_set_error (bfd_error_bad_value);
4207 return FALSE;
4208 }
a6aa5195
AM
4209 else
4210 {
016687f8 4211 bfd_vma addend = 0;
ee05f2fe 4212
016687f8
AM
4213 if (r_type == R_PPC_PLTREL24)
4214 {
4215 ppc_elf_tdata (abfd)->makes_plt_call = 1;
a877a2b6
AM
4216 if (info->shared)
4217 addend = rel->r_addend;
016687f8 4218 }
a6aa5195 4219 h->needs_plt = 1;
32af9f6e 4220 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
a6aa5195
AM
4221 return FALSE;
4222 }
25dbc73a 4223 break;
ee05f2fe 4224
25dbc73a
AM
4225 /* The following relocations don't need to propagate the
4226 relocation if linking a shared object since they are
4227 section relative. */
4228 case R_PPC_SECTOFF:
4229 case R_PPC_SECTOFF_LO:
4230 case R_PPC_SECTOFF_HI:
4231 case R_PPC_SECTOFF_HA:
4232 case R_PPC_DTPREL16:
4233 case R_PPC_DTPREL16_LO:
4234 case R_PPC_DTPREL16_HI:
4235 case R_PPC_DTPREL16_HA:
4236 case R_PPC_TOC16:
4237 break;
252b5132 4238
d7128ce4
AM
4239 case R_PPC_REL16:
4240 case R_PPC_REL16_LO:
4241 case R_PPC_REL16_HI:
4242 case R_PPC_REL16_HA:
016687f8 4243 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
4244 break;
4245
a6aa5195 4246 /* These are just markers. */
25dbc73a
AM
4247 case R_PPC_TLS:
4248 case R_PPC_EMB_MRKREF:
4249 case R_PPC_NONE:
4250 case R_PPC_max:
32af9f6e
AM
4251 case R_PPC_RELAX:
4252 case R_PPC_RELAX_PLT:
4253 case R_PPC_RELAX_PLTREL24:
25dbc73a 4254 break;
252b5132 4255
25dbc73a
AM
4256 /* These should only appear in dynamic objects. */
4257 case R_PPC_COPY:
4258 case R_PPC_GLOB_DAT:
4259 case R_PPC_JMP_SLOT:
4260 case R_PPC_RELATIVE:
e054468f 4261 case R_PPC_IRELATIVE:
25dbc73a 4262 break;
252b5132 4263
25dbc73a
AM
4264 /* These aren't handled yet. We'll report an error later. */
4265 case R_PPC_ADDR30:
4266 case R_PPC_EMB_RELSEC16:
4267 case R_PPC_EMB_RELST_LO:
4268 case R_PPC_EMB_RELST_HI:
4269 case R_PPC_EMB_RELST_HA:
4270 case R_PPC_EMB_BIT_FLD:
4271 break;
252b5132 4272
25dbc73a
AM
4273 /* This refers only to functions defined in the shared library. */
4274 case R_PPC_LOCAL24PC:
727fc41e 4275 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
4276 {
4277 htab->plt_type = PLT_OLD;
4278 htab->old_bfd = abfd;
4279 }
c7e17e05
AM
4280 if (h != NULL && h->type == STT_GNU_IFUNC)
4281 {
4282 if (info->shared)
4283 {
4284 info->callbacks->einfo (_("%P: %H: @local call to ifunc %s\n"),
4285 abfd, sec, rel->r_offset,
4286 h->root.root.string);
4287 bfd_set_error (bfd_error_bad_value);
4288 return FALSE;
4289 }
4290 h->needs_plt = 1;
4291 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4292 return FALSE;
4293 }
25dbc73a 4294 break;
252b5132 4295
25dbc73a
AM
4296 /* This relocation describes the C++ object vtable hierarchy.
4297 Reconstruct it for later use during GC. */
4298 case R_PPC_GNU_VTINHERIT:
4299 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4300 return FALSE;
4301 break;
252b5132 4302
25dbc73a
AM
4303 /* This relocation describes which C++ vtable entries are actually
4304 used. Record for later use during GC. */
4305 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
4306 BFD_ASSERT (h != NULL);
4307 if (h != NULL
4308 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
4309 return FALSE;
4310 break;
252b5132 4311
25dbc73a
AM
4312 /* We shouldn't really be seeing these. */
4313 case R_PPC_TPREL32:
1d483afe
AM
4314 case R_PPC_TPREL16:
4315 case R_PPC_TPREL16_LO:
4316 case R_PPC_TPREL16_HI:
4317 case R_PPC_TPREL16_HA:
afb93314 4318 if (info->shared)
25dbc73a
AM
4319 info->flags |= DF_STATIC_TLS;
4320 goto dodyn;
252b5132 4321
25dbc73a
AM
4322 /* Nor these. */
4323 case R_PPC_DTPMOD32:
4324 case R_PPC_DTPREL32:
4325 goto dodyn;
252b5132 4326
9edfd1af
AM
4327 case R_PPC_REL32:
4328 if (h == NULL
4329 && got2 != NULL
4330 && (sec->flags & SEC_CODE) != 0
a877a2b6 4331 && info->shared
4a3dc543 4332 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
4333 {
4334 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4335 the start of a function, which assembles to a REL32
4336 reference to .got2. If we detect one of these, then
4337 force the old PLT layout because the linker cannot
4338 reliably deduce the GOT pointer value needed for
4339 PLT call stubs. */
4340 asection *s;
87d72d41 4341 Elf_Internal_Sym *isym;
9edfd1af 4342
87d72d41
AM
4343 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4344 abfd, r_symndx);
4345 if (isym == NULL)
4346 return FALSE;
4347
4348 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
9edfd1af 4349 if (s == got2)
016687f8
AM
4350 {
4351 htab->plt_type = PLT_OLD;
4352 htab->old_bfd = abfd;
4353 }
9edfd1af 4354 }
7123df0e 4355 if (h == NULL || h == htab->elf.hgot)
fd38b44c 4356 break;
625af618
AM
4357 /* fall through */
4358
4359 case R_PPC_ADDR32:
4360 case R_PPC_ADDR16:
4361 case R_PPC_ADDR16_LO:
4362 case R_PPC_ADDR16_HI:
4363 case R_PPC_ADDR16_HA:
4364 case R_PPC_UADDR32:
4365 case R_PPC_UADDR16:
4366 if (h != NULL && !info->shared)
4367 {
4368 /* We may need a plt entry if the symbol turns out to be
4369 a function defined in a dynamic object. */
3ec01793 4370 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
625af618
AM
4371 return FALSE;
4372
4373 /* We may need a copy reloc too. */
4374 h->non_got_ref = 1;
4375 h->pointer_equality_needed = 1;
4376 }
4377 goto dodyn;
9edfd1af 4378
25dbc73a
AM
4379 case R_PPC_REL24:
4380 case R_PPC_REL14:
4381 case R_PPC_REL14_BRTAKEN:
4382 case R_PPC_REL14_BRNTAKEN:
d7128ce4 4383 if (h == NULL)
25dbc73a 4384 break;
7123df0e 4385 if (h == htab->elf.hgot)
d7128ce4 4386 {
7123df0e 4387 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4388 {
4389 htab->plt_type = PLT_OLD;
4390 htab->old_bfd = abfd;
4391 }
d7128ce4
AM
4392 break;
4393 }
25dbc73a 4394 /* fall through */
ee05f2fe 4395
25dbc73a 4396 case R_PPC_ADDR24:
25dbc73a
AM
4397 case R_PPC_ADDR14:
4398 case R_PPC_ADDR14_BRTAKEN:
4399 case R_PPC_ADDR14_BRNTAKEN:
25dbc73a
AM
4400 if (h != NULL && !info->shared)
4401 {
4402 /* We may need a plt entry if the symbol turns out to be
4403 a function defined in a dynamic object. */
e054468f 4404 h->needs_plt = 1;
de972ffa 4405 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
a6aa5195 4406 return FALSE;
625af618 4407 break;
25dbc73a 4408 }
7619e7c7 4409
25dbc73a
AM
4410 dodyn:
4411 /* If we are creating a shared library, and this is a reloc
4412 against a global symbol, or a non PC relative reloc
4413 against a local symbol, then we need to copy the reloc
4414 into the shared library. However, if we are linking with
4415 -Bsymbolic, we do not need to copy a reloc against a
4416 global symbol which is defined in an object we are
4417 including in the link (i.e., DEF_REGULAR is set). At
4418 this point we have not seen all the input files, so it is
4419 possible that DEF_REGULAR is not set now but will be set
4420 later (it is never cleared). In case of a weak definition,
4421 DEF_REGULAR may be cleared later by a strong definition in
4422 a shared library. We account for that possibility below by
4423 storing information in the dyn_relocs field of the hash
4424 table entry. A similar situation occurs when creating
4425 shared libraries and symbol visibility changes render the
4426 symbol local.
7619e7c7 4427
25dbc73a
AM
4428 If on the other hand, we are creating an executable, we
4429 may need to keep relocations for symbols satisfied by a
4430 dynamic library if we manage to avoid copy relocs for the
4431 symbol. */
4432 if ((info->shared
1d483afe 4433 && (must_be_dyn_reloc (info, r_type)
25dbc73a 4434 || (h != NULL
198f1157 4435 && (!SYMBOLIC_BIND (info, h)
25dbc73a
AM
4436 || h->root.type == bfd_link_hash_defweak
4437 || !h->def_regular))))
4438 || (ELIMINATE_COPY_RELOCS
4439 && !info->shared
25dbc73a
AM
4440 && h != NULL
4441 && (h->root.type == bfd_link_hash_defweak
de972ffa 4442 || !h->def_regular)))
25dbc73a 4443 {
25dbc73a
AM
4444#ifdef DEBUG
4445 fprintf (stderr,
4446 "ppc_elf_check_relocs needs to "
4447 "create relocation for %s\n",
4448 (h && h->root.root.string
4449 ? h->root.root.string : "<unknown>"));
4450#endif
4451 if (sreloc == NULL)
4452 {
c9a2f333
AM
4453 if (htab->elf.dynobj == NULL)
4454 htab->elf.dynobj = abfd;
83bac4b0
NC
4455
4456 sreloc = _bfd_elf_make_dynamic_reloc_section
4457 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4458
25dbc73a 4459 if (sreloc == NULL)
83bac4b0 4460 return FALSE;
25dbc73a 4461 }
7619e7c7 4462
25dbc73a
AM
4463 /* If this is a global symbol, we count the number of
4464 relocations we need for this symbol. */
4465 if (h != NULL)
4466 {
f95f8542
AM
4467 struct elf_dyn_relocs *p;
4468 struct elf_dyn_relocs **rel_head;
4469
91d6fa6a 4470 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
f95f8542
AM
4471 p = *rel_head;
4472 if (p == NULL || p->sec != sec)
4473 {
4474 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4475 if (p == NULL)
4476 return FALSE;
4477 p->next = *rel_head;
4478 *rel_head = p;
4479 p->sec = sec;
4480 p->count = 0;
4481 p->pc_count = 0;
4482 }
4483 p->count += 1;
4484 if (!must_be_dyn_reloc (info, r_type))
4485 p->pc_count += 1;
25dbc73a
AM
4486 }
4487 else
4488 {
4489 /* Track dynamic relocs needed for local syms too.
4490 We really need local syms available to do this
4491 easily. Oh well. */
f95f8542
AM
4492 struct ppc_dyn_relocs *p;
4493 struct ppc_dyn_relocs **rel_head;
4494 bfd_boolean is_ifunc;
25dbc73a 4495 asection *s;
6edfbbad 4496 void *vpp;
87d72d41 4497 Elf_Internal_Sym *isym;
6edfbbad 4498
87d72d41
AM
4499 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4500 abfd, r_symndx);
4501 if (isym == NULL)
25dbc73a 4502 return FALSE;
7fce784e 4503
87d72d41
AM
4504 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4505 if (s == NULL)
4506 s = sec;
4507
6edfbbad 4508 vpp = &elf_section_data (s)->local_dynrel;
f95f8542
AM
4509 rel_head = (struct ppc_dyn_relocs **) vpp;
4510 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4511 p = *rel_head;
4512 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4513 p = p->next;
4514 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4515 {
4516 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4517 if (p == NULL)
4518 return FALSE;
4519 p->next = *rel_head;
4520 *rel_head = p;
4521 p->sec = sec;
4522 p->ifunc = is_ifunc;
4523 p->count = 0;
4524 }
4525 p->count += 1;
25dbc73a 4526 }
7619e7c7 4527 }
25dbc73a
AM
4528
4529 break;
7619e7c7
AM
4530 }
4531 }
ee05f2fe 4532
25dbc73a
AM
4533 return TRUE;
4534}
4535\f
34c8bcba
JM
4536
4537/* Merge object attributes from IBFD into OBFD. Raise an error if
4538 there are conflicting attributes. */
4539static bfd_boolean
4540ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4541{
c6e65352
DJ
4542 obj_attribute *in_attr, *in_attrs;
4543 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM
4544
4545 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4546 {
4547 /* This is the first object. Copy the attributes. */
4548 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4549
4550 /* Use the Tag_null value to indicate the attributes have been
4551 initialized. */
4552 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4553
4554 return TRUE;
4555 }
4556
c6e65352
DJ
4557 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4558 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4559
34c8bcba
JM
4560 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4561 non-conflicting ones. */
c6e65352
DJ
4562 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4563 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4564 if (in_attr->i != out_attr->i)
34c8bcba 4565 {
c6e65352
DJ
4566 out_attr->type = 1;
4567 if (out_attr->i == 0)
4568 out_attr->i = in_attr->i;
4569 else if (in_attr->i == 0)
34c8bcba 4570 ;
c6e65352 4571 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM
4572 _bfd_error_handler
4573 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3c7b9897
AM
4574 else if (out_attr->i == 1 && in_attr->i == 3)
4575 _bfd_error_handler
5b914448 4576 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3c7b9897
AM
4577 obfd, ibfd);
4578 else if (out_attr->i == 3 && in_attr->i == 1)
4579 _bfd_error_handler
5b914448 4580 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3c7b9897
AM
4581 ibfd, obfd);
4582 else if (out_attr->i == 3 && in_attr->i == 2)
4583 _bfd_error_handler
5b914448 4584 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3c7b9897
AM
4585 ibfd, obfd);
4586 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
34c8bcba
JM
4587 _bfd_error_handler
4588 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3c7b9897 4589 else if (in_attr->i > 3)
34c8bcba
JM
4590 _bfd_error_handler
4591 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 4592 in_attr->i);
34c8bcba
JM
4593 else
4594 _bfd_error_handler
4595 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ
4596 out_attr->i);
4597 }
4598
4599 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4600 merge non-conflicting ones. */
4601 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4602 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4603 if (in_attr->i != out_attr->i)
4604 {
4605 const char *in_abi = NULL, *out_abi = NULL;
4606
4607 switch (in_attr->i)
4608 {
4609 case 1: in_abi = "generic"; break;
4610 case 2: in_abi = "AltiVec"; break;
4611 case 3: in_abi = "SPE"; break;
4612 }
4613
4614 switch (out_attr->i)
4615 {
4616 case 1: out_abi = "generic"; break;
4617 case 2: out_abi = "AltiVec"; break;
4618 case 3: out_abi = "SPE"; break;
4619 }
4620
4621 out_attr->type = 1;
4622 if (out_attr->i == 0)
4623 out_attr->i = in_attr->i;
4624 else if (in_attr->i == 0)
4625 ;
4626 /* For now, allow generic to transition to AltiVec or SPE
4627 without a warning. If GCC marked files with their stack
4628 alignment and used don't-care markings for files which are
4629 not affected by the vector ABI, we could warn about this
4630 case too. */
4631 else if (out_attr->i == 1)
4632 out_attr->i = in_attr->i;
4633 else if (in_attr->i == 1)
4634 ;
4635 else if (in_abi == NULL)
4636 _bfd_error_handler
4637 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4638 in_attr->i);
4639 else if (out_abi == NULL)
4640 _bfd_error_handler
4641 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4642 in_attr->i);
4643 else
4644 _bfd_error_handler
4645 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4646 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM
4647 }
4648
f82e0623
NF
4649 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4650 and merge non-conflicting ones. */
4651 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4652 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4653 if (in_attr->i != out_attr->i)
4654 {
4655 out_attr->type = 1;
4656 if (out_attr->i == 0)
4657 out_attr->i = in_attr->i;
4658 else if (in_attr->i == 0)
4659 ;
4660 else if (out_attr->i == 1 && in_attr->i == 2)
4661 _bfd_error_handler
4662 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4663 else if (out_attr->i == 2 && in_attr->i == 1)
4664 _bfd_error_handler
4665 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4666 else if (in_attr->i > 2)
4667 _bfd_error_handler
4668 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4669 in_attr->i);
4670 else
4671 _bfd_error_handler
4672 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4673 out_attr->i);
4674 }
4675
34c8bcba
JM
4676 /* Merge Tag_compatibility attributes and any common GNU ones. */
4677 _bfd_elf_merge_object_attributes (ibfd, obfd);
4678
4679 return TRUE;
4680}
4681
8853c3d3
AM
4682/* Merge backend specific data from an object file to the output
4683 object file when linking. */
4684
4685static bfd_boolean
4686ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4687{
4688 flagword old_flags;
4689 flagword new_flags;
4690 bfd_boolean error;
4691
0c8d6e5c 4692 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4693 return TRUE;
4694
cc643b88 4695 /* Check if we have the same endianness. */
8853c3d3
AM
4696 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4697 return FALSE;
4698
34c8bcba
JM
4699 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4700 return FALSE;
4701
8853c3d3
AM
4702 new_flags = elf_elfheader (ibfd)->e_flags;
4703 old_flags = elf_elfheader (obfd)->e_flags;
4704 if (!elf_flags_init (obfd))
4705 {
4706 /* First call, no flags set. */
4707 elf_flags_init (obfd) = TRUE;
4708 elf_elfheader (obfd)->e_flags = new_flags;
4709 }
4710
4711 /* Compatible flags are ok. */
4712 else if (new_flags == old_flags)
4713 ;
4714
4715 /* Incompatible flags. */
4716 else
4717 {
4718 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4719 to be linked with either. */
4720 error = FALSE;
4721 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4722 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4723 {
4724 error = TRUE;
4725 (*_bfd_error_handler)
4726 (_("%B: compiled with -mrelocatable and linked with "
4727 "modules compiled normally"), ibfd);
4728 }
4729 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4730 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4731 {
4732 error = TRUE;
4733 (*_bfd_error_handler)
4734 (_("%B: compiled normally and linked with "
4735 "modules compiled with -mrelocatable"), ibfd);
4736 }
4737
4738 /* The output is -mrelocatable-lib iff both the input files are. */
4739 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4740 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4741
4742 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4743 but each input file is either -mrelocatable or -mrelocatable-lib. */
4744 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4745 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4746 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4747 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4748
4749 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4750 any module uses it. */
4751 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4752
4753 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4754 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4755
4756 /* Warn about any other mismatches. */
4757 if (new_flags != old_flags)
4758 {
4759 error = TRUE;
4760 (*_bfd_error_handler)
4761 (_("%B: uses different e_flags (0x%lx) fields "
4762 "than previous modules (0x%lx)"),
4763 ibfd, (long) new_flags, (long) old_flags);
4764 }
4765
4766 if (error)
4767 {
4768 bfd_set_error (bfd_error_bad_value);
4769 return FALSE;
4770 }
4771 }
4772
4773 return TRUE;
4774}
b9c361e0
JL
4775
4776static void
86c95733
AM
4777ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4778 bfd_vma value,
4779 split16_format_type split16_format)
b9c361e0
JL
4780
4781{
86c95733 4782 unsigned int insn, top5;
b9c361e0 4783
86c95733
AM
4784 insn = bfd_get_32 (output_bfd, loc);
4785 top5 = value & 0xf800;
4786 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
b9c361e0 4787 insn |= top5;
86c95733
AM
4788 insn |= value & 0x7ff;
4789 bfd_put_32 (output_bfd, insn, loc);
b9c361e0
JL
4790}
4791
8853c3d3 4792\f
d7128ce4
AM
4793/* Choose which PLT scheme to use, and set .plt flags appropriately.
4794 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4795int
4796ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
5446cbdf 4797 struct bfd_link_info *info)
d7128ce4
AM
4798{
4799 struct ppc_elf_link_hash_table *htab;
9d8504b1 4800 flagword flags;
d7128ce4
AM
4801
4802 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4803
4804 if (htab->plt_type == PLT_UNSET)
016687f8 4805 {
b3874e1a
AM
4806 struct elf_link_hash_entry *h;
4807
5446cbdf 4808 if (htab->params->plt_style == PLT_OLD)
016687f8 4809 htab->plt_type = PLT_OLD;
b3874e1a
AM
4810 else if (info->shared
4811 && htab->elf.dynamic_sections_created
4812 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4813 FALSE, FALSE, TRUE)) != NULL
4814 && (h->type == STT_FUNC
4815 || h->needs_plt)
4816 && h->ref_regular
4817 && !(SYMBOL_CALLS_LOCAL (info, h)
4818 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4819 && h->root.type == bfd_link_hash_undefweak)))
4820 {
4821 /* Profiling of shared libs (and pies) is not supported with
4822 secure plt, because ppc32 does profiling before a
4823 function prologue and a secure plt pic call stubs needs
4824 r30 to be set up. */
4825 htab->plt_type = PLT_OLD;
4826 }
016687f8
AM
4827 else
4828 {
4829 bfd *ibfd;
5446cbdf 4830 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
016687f8
AM
4831
4832 /* Look through the reloc flags left by ppc_elf_check_relocs.
4833 Use the old style bss plt if a file makes plt calls
4834 without using the new relocs, and if ld isn't given
4835 --secure-plt and we never see REL16 relocs. */
4836 if (plt_type == PLT_UNSET)
4837 plt_type = PLT_OLD;
c72f2fb2 4838 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
0c8d6e5c 4839 if (is_ppc_elf (ibfd))
016687f8
AM
4840 {
4841 if (ppc_elf_tdata (ibfd)->has_rel16)
4842 plt_type = PLT_NEW;
4843 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4844 {
4845 plt_type = PLT_OLD;
4846 htab->old_bfd = ibfd;
4847 break;
4848 }
4849 }
4850 htab->plt_type = plt_type;
4851 }
4852 }
5446cbdf 4853 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
b3874e1a
AM
4854 {
4855 if (htab->old_bfd != NULL)
4856 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4857 htab->old_bfd);
4858 else
4859 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4860 }
d7128ce4 4861
4a3dc543 4862 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4863
4a3dc543 4864 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
4865 {
4866 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4867 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
4868
4869 /* The new PLT is a loaded section. */
4870 if (htab->plt != NULL
4871 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4872 return -1;
4873
4874 /* The new GOT is not executable. */
4875 if (htab->got != NULL
4876 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4877 return -1;
d7128ce4
AM
4878 }
4879 else
4880 {
4881 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
4882 if (htab->glink != NULL
4883 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4884 return -1;
d7128ce4 4885 }
4a3dc543 4886 return htab->plt_type == PLT_NEW;
d7128ce4
AM
4887}
4888\f
25dbc73a
AM
4889/* Return the section that should be marked against GC for a given
4890 relocation. */
586119b3 4891
25dbc73a
AM
4892static asection *
4893ppc_elf_gc_mark_hook (asection *sec,
07adf181 4894 struct bfd_link_info *info,
25dbc73a
AM
4895 Elf_Internal_Rela *rel,
4896 struct elf_link_hash_entry *h,
4897 Elf_Internal_Sym *sym)
4898{
4899 if (h != NULL)
07adf181
AM
4900 switch (ELF32_R_TYPE (rel->r_info))
4901 {
4902 case R_PPC_GNU_VTINHERIT:
4903 case R_PPC_GNU_VTENTRY:
4904 return NULL;
4905 }
4906
4907 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 4908}
a876ecf9 4909
25dbc73a
AM
4910/* Update the got, plt and dynamic reloc reference counts for the
4911 section being removed. */
4912
4913static bfd_boolean
4914ppc_elf_gc_sweep_hook (bfd *abfd,
4915 struct bfd_link_info *info,
4916 asection *sec,
4917 const Elf_Internal_Rela *relocs)
4918{
4919 struct ppc_elf_link_hash_table *htab;
4920 Elf_Internal_Shdr *symtab_hdr;
4921 struct elf_link_hash_entry **sym_hashes;
4922 bfd_signed_vma *local_got_refcounts;
4923 const Elf_Internal_Rela *rel, *relend;
a6aa5195 4924 asection *got2;
25dbc73a 4925
7dda2462
TG
4926 if (info->relocatable)
4927 return TRUE;
4928
c87b5a93
AM
4929 if ((sec->flags & SEC_ALLOC) == 0)
4930 return TRUE;
4931
25dbc73a
AM
4932 elf_section_data (sec)->local_dynrel = NULL;
4933
4934 htab = ppc_elf_hash_table (info);
0ffa91dd 4935 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
4936 sym_hashes = elf_sym_hashes (abfd);
4937 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 4938 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4939
4940 relend = relocs + sec->reloc_count;
4941 for (rel = relocs; rel < relend; rel++)
4942 {
4943 unsigned long r_symndx;
4944 enum elf_ppc_reloc_type r_type;
4945 struct elf_link_hash_entry *h = NULL;
4946
4947 r_symndx = ELF32_R_SYM (rel->r_info);
4948 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 4949 {
6061a67d 4950 struct elf_dyn_relocs **pp, *p;
25dbc73a
AM
4951 struct ppc_elf_link_hash_entry *eh;
4952
4953 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4954 while (h->root.type == bfd_link_hash_indirect
4955 || h->root.type == bfd_link_hash_warning)
4956 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4957 eh = (struct ppc_elf_link_hash_entry *) h;
4958
4959 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4960 if (p->sec == sec)
4961 {
4962 /* Everything must go for SEC. */
4963 *pp = p->next;
4964 break;
4965 }
a876ecf9 4966 }
ee05f2fe 4967
25dbc73a 4968 r_type = ELF32_R_TYPE (rel->r_info);
de972ffa
AM
4969 if (!htab->is_vxworks
4970 && h == NULL
4971 && local_got_refcounts != NULL
4972 && (!info->shared
4973 || is_branch_reloc (r_type)))
e054468f 4974 {
de972ffa
AM
4975 struct plt_entry **local_plt = (struct plt_entry **)
4976 (local_got_refcounts + symtab_hdr->sh_info);
4977 char *local_got_tls_masks = (char *)
4978 (local_plt + symtab_hdr->sh_info);
4979 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
e054468f 4980 {
de972ffa 4981 struct plt_entry **ifunc = local_plt + r_symndx;
a877a2b6
AM
4982 bfd_vma addend = 0;
4983 struct plt_entry *ent;
4984
4985 if (r_type == R_PPC_PLTREL24 && info->shared)
4986 addend = rel->r_addend;
4987 ent = find_plt_ent (ifunc, got2, addend);
e054468f
AM
4988 if (ent->plt.refcount > 0)
4989 ent->plt.refcount -= 1;
4990 continue;
4991 }
4992 }
4993
25dbc73a 4994 switch (r_type)
ee05f2fe 4995 {
25dbc73a
AM
4996 case R_PPC_GOT_TLSLD16:
4997 case R_PPC_GOT_TLSLD16_LO:
4998 case R_PPC_GOT_TLSLD16_HI:
4999 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
5000 case R_PPC_GOT_TLSGD16:
5001 case R_PPC_GOT_TLSGD16_LO:
5002 case R_PPC_GOT_TLSGD16_HI:
5003 case R_PPC_GOT_TLSGD16_HA:
5004 case R_PPC_GOT_TPREL16:
5005 case R_PPC_GOT_TPREL16_LO:
5006 case R_PPC_GOT_TPREL16_HI:
5007 case R_PPC_GOT_TPREL16_HA:
5008 case R_PPC_GOT_DTPREL16:
5009 case R_PPC_GOT_DTPREL16_LO:
5010 case R_PPC_GOT_DTPREL16_HI:
5011 case R_PPC_GOT_DTPREL16_HA:
5012 case R_PPC_GOT16:
5013 case R_PPC_GOT16_LO:
5014 case R_PPC_GOT16_HI:
5015 case R_PPC_GOT16_HA:
5016 if (h != NULL)
ee05f2fe 5017 {
25dbc73a
AM
5018 if (h->got.refcount > 0)
5019 h->got.refcount--;
91e21fb7
AM
5020 if (!info->shared)
5021 {
5022 struct plt_entry *ent;
5023
5024 ent = find_plt_ent (&h->plt.plist, NULL, 0);
32af9f6e 5025 if (ent != NULL && ent->plt.refcount > 0)
91e21fb7
AM
5026 ent->plt.refcount -= 1;
5027 }
ee05f2fe 5028 }
25dbc73a
AM
5029 else if (local_got_refcounts != NULL)
5030 {
5031 if (local_got_refcounts[r_symndx] > 0)
5032 local_got_refcounts[r_symndx]--;
5033 }
5034 break;
ee05f2fe 5035
25dbc73a
AM
5036 case R_PPC_REL24:
5037 case R_PPC_REL14:
5038 case R_PPC_REL14_BRTAKEN:
5039 case R_PPC_REL14_BRNTAKEN:
5040 case R_PPC_REL32:
3b36f7e6 5041 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM
5042 break;
5043 /* Fall thru */
ee05f2fe 5044
25dbc73a
AM
5045 case R_PPC_ADDR32:
5046 case R_PPC_ADDR24:
5047 case R_PPC_ADDR16:
5048 case R_PPC_ADDR16_LO:
5049 case R_PPC_ADDR16_HI:
5050 case R_PPC_ADDR16_HA:
5051 case R_PPC_ADDR14:
5052 case R_PPC_ADDR14_BRTAKEN:
5053 case R_PPC_ADDR14_BRNTAKEN:
5054 case R_PPC_UADDR32:
5055 case R_PPC_UADDR16:
87538722
AM
5056 if (info->shared)
5057 break;
5058
25dbc73a
AM
5059 case R_PPC_PLT32:
5060 case R_PPC_PLTREL24:
87538722 5061 case R_PPC_PLTREL32:
25dbc73a
AM
5062 case R_PPC_PLT16_LO:
5063 case R_PPC_PLT16_HI:
5064 case R_PPC_PLT16_HA:
5065 if (h != NULL)
5066 {
a877a2b6
AM
5067 bfd_vma addend = 0;
5068 struct plt_entry *ent;
5069
5070 if (r_type == R_PPC_PLTREL24 && info->shared)
5071 addend = rel->r_addend;
5072 ent = find_plt_ent (&h->plt.plist, got2, addend);
32af9f6e 5073 if (ent != NULL && ent->plt.refcount > 0)
a6aa5195 5074 ent->plt.refcount -= 1;
25dbc73a
AM
5075 }
5076 break;
ee05f2fe 5077
25dbc73a
AM
5078 default:
5079 break;
5080 }
7fce784e 5081 }
7fce784e
AS
5082 return TRUE;
5083}
25dbc73a 5084\f
3a71aa26
AM
5085/* Set plt output section type, htab->tls_get_addr, and call the
5086 generic ELF tls_setup function. */
7fce784e 5087
25dbc73a 5088asection *
5446cbdf 5089ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 5090{
25dbc73a 5091 struct ppc_elf_link_hash_table *htab;
7fce784e 5092
25dbc73a 5093 htab = ppc_elf_hash_table (info);
a7f2871e
AM
5094 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5095 FALSE, FALSE, TRUE);
5446cbdf 5096 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM
5097 {
5098 struct elf_link_hash_entry *opt, *tga;
5099 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5100 FALSE, FALSE, TRUE);
5101 if (opt != NULL
5102 && (opt->root.type == bfd_link_hash_defined
5103 || opt->root.type == bfd_link_hash_defweak))
5104 {
5105 /* If glibc supports an optimized __tls_get_addr call stub,
5106 signalled by the presence of __tls_get_addr_opt, and we'll
5107 be calling __tls_get_addr via a plt call stub, then
5108 make __tls_get_addr point to __tls_get_addr_opt. */
5109 tga = htab->tls_get_addr;
5110 if (htab->elf.dynamic_sections_created
5111 && tga != NULL
5112 && (tga->type == STT_FUNC
5113 || tga->needs_plt)
5114 && !(SYMBOL_CALLS_LOCAL (info, tga)
5115 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5116 && tga->root.type == bfd_link_hash_undefweak)))
5117 {
5118 struct plt_entry *ent;
32af9f6e
AM
5119 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5120 if (ent->plt.refcount > 0)
5121 break;
5122 if (ent != NULL)
a7f2871e
AM
5123 {
5124 tga->root.type = bfd_link_hash_indirect;
5125 tga->root.u.i.link = &opt->root;
5126 ppc_elf_copy_indirect_symbol (info, opt, tga);
5127 if (opt->dynindx != -1)
5128 {
5129 /* Use __tls_get_addr_opt in dynamic relocations. */
5130 opt->dynindx = -1;
5131 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5132 opt->dynstr_index);
5133 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5134 return FALSE;
5135 }
5136 htab->tls_get_addr = opt;
5137 }
5138 }
5139 }
5140 else
5446cbdf 5141 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 5142 }
4a3dc543 5143 if (htab->plt_type == PLT_NEW
d7128ce4
AM
5144 && htab->plt != NULL
5145 && htab->plt->output_section != NULL)
5146 {
5147 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5148 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5149 }
5150
25dbc73a 5151 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
5152}
5153
3a71aa26
AM
5154/* Return TRUE iff REL is a branch reloc with a global symbol matching
5155 HASH. */
5156
5157static bfd_boolean
5158branch_reloc_hash_match (const bfd *ibfd,
5159 const Elf_Internal_Rela *rel,
5160 const struct elf_link_hash_entry *hash)
5161{
5162 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5163 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5164 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5165
e054468f 5166 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
3a71aa26
AM
5167 {
5168 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5169 struct elf_link_hash_entry *h;
5170
5171 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5172 while (h->root.type == bfd_link_hash_indirect
5173 || h->root.type == bfd_link_hash_warning)
5174 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5175 if (h == hash)
5176 return TRUE;
5177 }
5178 return FALSE;
5179}
5180
25dbc73a
AM
5181/* Run through all the TLS relocs looking for optimization
5182 opportunities. */
252b5132 5183
25dbc73a
AM
5184bfd_boolean
5185ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5186 struct bfd_link_info *info)
252b5132 5187{
7fce784e 5188 bfd *ibfd;
25dbc73a
AM
5189 asection *sec;
5190 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 5191 int pass;
252b5132 5192
1d483afe 5193 if (info->relocatable || !info->executable)
25dbc73a 5194 return TRUE;
252b5132 5195
7619e7c7 5196 htab = ppc_elf_hash_table (info);
663a1470
AM
5197 if (htab == NULL)
5198 return FALSE;
5199
b7fcf6f6
AM
5200 /* Make two passes through the relocs. First time check that tls
5201 relocs involved in setting up a tls_get_addr call are indeed
663a1470
AM
5202 followed by such a call. If they are not, don't do any tls
5203 optimization. On the second pass twiddle tls_mask flags to
5204 notify relocate_section that optimization can be done, and
5205 adjust got and plt refcounts. */
b7fcf6f6 5206 for (pass = 0; pass < 2; ++pass)
c72f2fb2 5207 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
b7fcf6f6
AM
5208 {
5209 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 5210 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
32af9f6e 5211 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
7619e7c7 5212
b7fcf6f6
AM
5213 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5214 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5215 {
5216 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 5217 int expecting_tls_get_addr = 0;
252b5132 5218
b7fcf6f6
AM
5219 /* Read the relocations. */
5220 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5221 info->keep_memory);
5222 if (relstart == NULL)
5223 return FALSE;
7619e7c7 5224
b7fcf6f6
AM
5225 relend = relstart + sec->reloc_count;
5226 for (rel = relstart; rel < relend; rel++)
5227 {
5228 enum elf_ppc_reloc_type r_type;
5229 unsigned long r_symndx;
5230 struct elf_link_hash_entry *h = NULL;
5231 char *tls_mask;
5232 char tls_set, tls_clear;
5233 bfd_boolean is_local;
b7fcf6f6
AM
5234 bfd_signed_vma *got_count;
5235
5236 r_symndx = ELF32_R_SYM (rel->r_info);
5237 if (r_symndx >= symtab_hdr->sh_info)
5238 {
5239 struct elf_link_hash_entry **sym_hashes;
7fce784e 5240
b7fcf6f6
AM
5241 sym_hashes = elf_sym_hashes (ibfd);
5242 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5243 while (h->root.type == bfd_link_hash_indirect
5244 || h->root.type == bfd_link_hash_warning)
5245 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5246 }
7619e7c7 5247
b7fcf6f6
AM
5248 is_local = FALSE;
5249 if (h == NULL
5250 || !h->def_dynamic)
5251 is_local = TRUE;
7619e7c7 5252
b7fcf6f6 5253 r_type = ELF32_R_TYPE (rel->r_info);
663a1470
AM
5254 /* If this section has old-style __tls_get_addr calls
5255 without marker relocs, then check that each
5256 __tls_get_addr call reloc is preceded by a reloc
5257 that conceivably belongs to the __tls_get_addr arg
5258 setup insn. If we don't find matching arg setup
5259 relocs, don't do any tls optimization. */
5260 if (pass == 0
5261 && sec->has_tls_get_addr_call
5262 && h != NULL
5263 && h == htab->tls_get_addr
5264 && !expecting_tls_get_addr
5265 && is_branch_reloc (r_type))
5266 {
25f53a85 5267 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
663a1470
AM
5268 "TLS optimization disabled\n",
5269 ibfd, sec, rel->r_offset);
5270 if (elf_section_data (sec)->relocs != relstart)
5271 free (relstart);
5272 return TRUE;
5273 }
5274
5275 expecting_tls_get_addr = 0;
b7fcf6f6
AM
5276 switch (r_type)
5277 {
5278 case R_PPC_GOT_TLSLD16:
5279 case R_PPC_GOT_TLSLD16_LO:
5280 expecting_tls_get_addr = 1;
5281 /* Fall thru */
5282
5283 case R_PPC_GOT_TLSLD16_HI:
5284 case R_PPC_GOT_TLSLD16_HA:
5285 /* These relocs should never be against a symbol
5286 defined in a shared lib. Leave them alone if
5287 that turns out to be the case. */
5288 if (!is_local)
5289 continue;
5290
5291 /* LD -> LE */
5292 tls_set = 0;
5293 tls_clear = TLS_LD;
5294 break;
5295
5296 case R_PPC_GOT_TLSGD16:
5297 case R_PPC_GOT_TLSGD16_LO:
5298 expecting_tls_get_addr = 1;
5299 /* Fall thru */
5300
5301 case R_PPC_GOT_TLSGD16_HI:
5302 case R_PPC_GOT_TLSGD16_HA:
5303 if (is_local)
5304 /* GD -> LE */
5305 tls_set = 0;
5306 else
5307 /* GD -> IE */
5308 tls_set = TLS_TLS | TLS_TPRELGD;
5309 tls_clear = TLS_GD;
5310 break;
5311
5312 case R_PPC_GOT_TPREL16:
5313 case R_PPC_GOT_TPREL16_LO:
5314 case R_PPC_GOT_TPREL16_HI:
5315 case R_PPC_GOT_TPREL16_HA:
5316 if (is_local)
5317 {
5318 /* IE -> LE */
5319 tls_set = 0;
5320 tls_clear = TLS_TPREL;
5321 break;
5322 }
5323 else
5324 continue;
5325
32af9f6e
AM
5326 case R_PPC_TLSGD:
5327 case R_PPC_TLSLD:
5328 expecting_tls_get_addr = 2;
5329 tls_set = 0;
5330 tls_clear = 0;
5331 break;
5332
b7fcf6f6 5333 default:
25dbc73a 5334 continue;
b7fcf6f6 5335 }
25dbc73a 5336
b7fcf6f6
AM
5337 if (pass == 0)
5338 {
727fc41e 5339 if (!expecting_tls_get_addr
32af9f6e
AM
5340 || (expecting_tls_get_addr == 1
5341 && !sec->has_tls_get_addr_call))
b7fcf6f6 5342 continue;
25dbc73a 5343
3a71aa26
AM
5344 if (rel + 1 < relend
5345 && branch_reloc_hash_match (ibfd, rel + 1,
5346 htab->tls_get_addr))
5347 continue;
25dbc73a 5348
b7fcf6f6
AM
5349 /* Uh oh, we didn't find the expected call. We
5350 could just mark this symbol to exclude it
5351 from tls optimization but it's safer to skip
663a1470 5352 the entire optimization. */
25f53a85 5353 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM
5354 "TLS optimization disabled\n"),
5355 ibfd, sec, rel->r_offset);
5356 if (elf_section_data (sec)->relocs != relstart)
5357 free (relstart);
5358 return TRUE;
b7fcf6f6 5359 }
25dbc73a 5360
32af9f6e
AM
5361 if (expecting_tls_get_addr)
5362 {
5363 struct plt_entry *ent;
5364 bfd_vma addend = 0;
5365
5366 if (info->shared
5367 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5368 addend = rel[1].r_addend;
5369 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5370 got2, addend);
5371 if (ent != NULL && ent->plt.refcount > 0)
5372 ent->plt.refcount -= 1;
5373
5374 if (expecting_tls_get_addr == 2)
5375 continue;
5376 }
5377
b7fcf6f6
AM
5378 if (h != NULL)
5379 {
5380 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5381 got_count = &h->got.refcount;
5382 }
5383 else
5384 {
b7fcf6f6 5385 bfd_signed_vma *lgot_refs;
e054468f 5386 struct plt_entry **local_plt;
b7fcf6f6 5387 char *lgot_masks;
25dbc73a 5388
b7fcf6f6
AM
5389 if (locsyms == NULL)
5390 {
5391 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5392 if (locsyms == NULL)
5393 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5394 symtab_hdr->sh_info,
5395 0, NULL, NULL, NULL);
5396 if (locsyms == NULL)
5397 {
5398 if (elf_section_data (sec)->relocs != relstart)
5399 free (relstart);
5400 return FALSE;
5401 }
5402 }
b7fcf6f6
AM
5403 lgot_refs = elf_local_got_refcounts (ibfd);
5404 if (lgot_refs == NULL)
5405 abort ();
e054468f
AM
5406 local_plt = (struct plt_entry **)
5407 (lgot_refs + symtab_hdr->sh_info);
5408 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
b7fcf6f6
AM
5409 tls_mask = &lgot_masks[r_symndx];
5410 got_count = &lgot_refs[r_symndx];
5411 }
25dbc73a 5412
b7fcf6f6
AM
5413 if (tls_set == 0)
5414 {
5415 /* We managed to get rid of a got entry. */
5416 if (*got_count > 0)
5417 *got_count -= 1;
5418 }
25dbc73a 5419
b7fcf6f6
AM
5420 *tls_mask |= tls_set;
5421 *tls_mask &= ~tls_clear;
5422 }
25dbc73a 5423
b7fcf6f6
AM
5424 if (elf_section_data (sec)->relocs != relstart)
5425 free (relstart);
5426 }
5427
5428 if (locsyms != NULL
5429 && (symtab_hdr->contents != (unsigned char *) locsyms))
5430 {
5431 if (!info->keep_memory)
5432 free (locsyms);
5433 else
5434 symtab_hdr->contents = (unsigned char *) locsyms;
5435 }
5436 }
25dbc73a
AM
5437 return TRUE;
5438}
5439\f
625af618
AM
5440/* Return true if we have dynamic relocs that apply to read-only sections. */
5441
5442static bfd_boolean
5443readonly_dynrelocs (struct elf_link_hash_entry *h)
5444{
6061a67d 5445 struct elf_dyn_relocs *p;
625af618
AM
5446
5447 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5448 {
5449 asection *s = p->sec->output_section;
5450
5451 if (s != NULL
5452 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5453 == (SEC_READONLY | SEC_ALLOC)))
5454 return TRUE;
5455 }
5456 return FALSE;
5457}
5458
25dbc73a
AM
5459/* Adjust a symbol defined by a dynamic object and referenced by a
5460 regular object. The current definition is in some section of the
5461 dynamic object, but we're not including those sections. We have to
5462 change the definition to something the rest of the link can
5463 understand. */
7fce784e 5464
25dbc73a
AM
5465static bfd_boolean
5466ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5467 struct elf_link_hash_entry *h)
5468{
5469 struct ppc_elf_link_hash_table *htab;
5470 asection *s;
7fce784e 5471
25dbc73a
AM
5472#ifdef DEBUG
5473 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5474 h->root.root.string);
5475#endif
252b5132 5476
25dbc73a
AM
5477 /* Make sure we know what is going on here. */
5478 htab = ppc_elf_hash_table (info);
5479 BFD_ASSERT (htab->elf.dynobj != NULL
5480 && (h->needs_plt
91e21fb7 5481 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5482 || h->u.weakdef != NULL
5483 || (h->def_dynamic
5484 && h->ref_regular
5485 && !h->def_regular)));
252b5132 5486
25dbc73a
AM
5487 /* Deal with function syms. */
5488 if (h->type == STT_FUNC
e054468f 5489 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5490 || h->needs_plt)
5491 {
5492 /* Clear procedure linkage table information for any symbol that
5493 won't need a .plt entry. */
a6aa5195
AM
5494 struct plt_entry *ent;
5495 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5496 if (ent->plt.refcount > 0)
5497 break;
5498 if (ent == NULL
e054468f
AM
5499 || (h->type != STT_GNU_IFUNC
5500 && (SYMBOL_CALLS_LOCAL (info, h)
5501 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5502 && h->root.type == bfd_link_hash_undefweak))))
252b5132 5503 {
25dbc73a 5504 /* A PLT entry is not required/allowed when:
252b5132 5505
25dbc73a
AM
5506 1. We are not using ld.so; because then the PLT entry
5507 can't be set up, so we can't use one. In this case,
5508 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 5509
25dbc73a
AM
5510 2. GC has rendered the entry unused.
5511
5512 3. We know for certain that a call to this symbol
5513 will go to this object, or will remain undefined. */
a6aa5195 5514 h->plt.plist = NULL;
25dbc73a 5515 h->needs_plt = 0;
d1eca1e4 5516 h->pointer_equality_needed = 0;
25dbc73a 5517 }
625af618
AM
5518 else
5519 {
d1eca1e4
AM
5520 /* Taking a function's address in a read/write section
5521 doesn't require us to define the function symbol in the
1009ef28 5522 executable on a plt call stub. A dynamic reloc can
d1eca1e4
AM
5523 be used instead. */
5524 if (h->pointer_equality_needed
1009ef28
AM
5525 && h->type != STT_GNU_IFUNC
5526 && !htab->is_vxworks
5527 && !ppc_elf_hash_entry (h)->has_sda_refs
d1eca1e4
AM
5528 && !readonly_dynrelocs (h))
5529 {
5530 h->pointer_equality_needed = 0;
5531 h->non_got_ref = 0;
5532 }
5533
25f23106
AM
5534 /* After adjust_dynamic_symbol, non_got_ref set in the
5535 non-shared case means that we have allocated space in
5536 .dynbss for the symbol and thus dyn_relocs for this
5537 symbol should be discarded.
625af618
AM
5538 If we get here we know we are making a PLT entry for this
5539 symbol, and in an executable we'd normally resolve
5540 relocations against this symbol to the PLT entry. Allow
5541 dynamic relocs if the reference is weak, and the dynamic
5542 relocs will not cause text relocation. */
d1eca1e4
AM
5543 else if (!h->ref_regular_nonweak
5544 && h->non_got_ref
5545 && h->type != STT_GNU_IFUNC
5546 && !htab->is_vxworks
5547 && !ppc_elf_hash_entry (h)->has_sda_refs
5548 && !readonly_dynrelocs (h))
625af618
AM
5549 h->non_got_ref = 0;
5550 }
25dbc73a 5551 return TRUE;
252b5132 5552 }
25dbc73a 5553 else
a6aa5195 5554 h->plt.plist = NULL;
252b5132 5555
25dbc73a
AM
5556 /* If this is a weak symbol, and there is a real definition, the
5557 processor independent code will have arranged for us to see the
5558 real definition first, and we can just use the same value. */
5559 if (h->u.weakdef != NULL)
252b5132 5560 {
25dbc73a
AM
5561 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5562 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5563 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5564 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5565 if (ELIMINATE_COPY_RELOCS)
5566 h->non_got_ref = h->u.weakdef->non_got_ref;
5567 return TRUE;
5568 }
dc810e39 5569
25dbc73a
AM
5570 /* This is a reference to a symbol defined by a dynamic object which
5571 is not a function. */
252b5132 5572
25dbc73a
AM
5573 /* If we are creating a shared library, we must presume that the
5574 only references to the symbol are via the global offset table.
5575 For such cases we need not do anything here; the relocations will
5576 be handled correctly by relocate_section. */
5577 if (info->shared)
5578 return TRUE;
252b5132 5579
25dbc73a
AM
5580 /* If there are no references to this symbol that do not use the
5581 GOT, we don't need to generate a copy reloc. */
5582 if (!h->non_got_ref)
5583 return TRUE;
5584
cfd2c773
NS
5585 /* If we didn't find any dynamic relocs in read-only sections, then
5586 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5587 We can't do this if there are any small data relocations. This
5588 doesn't work on VxWorks, where we can not have dynamic
5589 relocations (other than copy and jump slot relocations) in an
5590 executable. */
4dc4a9a5 5591 if (ELIMINATE_COPY_RELOCS
cfd2c773 5592 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
5593 && !htab->is_vxworks
5594 && !h->def_regular
5595 && !readonly_dynrelocs (h))
25dbc73a 5596 {
625af618
AM
5597 h->non_got_ref = 0;
5598 return TRUE;
252b5132
RH
5599 }
5600
25dbc73a
AM
5601 /* We must allocate the symbol in our .dynbss section, which will
5602 become part of the .bss section of the executable. There will be
5603 an entry for this symbol in the .dynsym section. The dynamic
5604 object will contain position independent code, so all references
5605 from the dynamic object to this symbol will go through the global
5606 offset table. The dynamic linker will use the .dynsym entry to
5607 determine the address it must put in the global offset table, so
5608 both the dynamic object and the regular object will refer to the
5609 same memory location for the variable.
5610
4dc4a9a5
DJ
5611 Of course, if the symbol is referenced using SDAREL relocs, we
5612 must instead allocate it in .sbss. */
25dbc73a 5613
4dc4a9a5 5614 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
5615 s = htab->dynsbss;
5616 else
5617 s = htab->dynbss;
5618 BFD_ASSERT (s != NULL);
5619
5620 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5621 copy the initial value out of the dynamic object and into the
5622 runtime process image. We need to remember the offset into the
5623 .rela.bss section we are going to use. */
1d7e9d18 5624 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
25dbc73a
AM
5625 {
5626 asection *srel;
5627
4dc4a9a5 5628 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
5629 srel = htab->relsbss;
5630 else
5631 srel = htab->relbss;
5632 BFD_ASSERT (srel != NULL);
5633 srel->size += sizeof (Elf32_External_Rela);
5634 h->needs_copy = 1;
5635 }
7619e7c7 5636
6cabe1ea 5637 return _bfd_elf_adjust_dynamic_copy (info, h, s);
25dbc73a
AM
5638}
5639\f
ac39eb42
AM
5640/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5641 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5642 specifying the addend on the plt relocation. For -fpic code, the sym
5643 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5644 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
5645
5646static bfd_boolean
5647add_stub_sym (struct plt_entry *ent,
5648 struct elf_link_hash_entry *h,
ac39eb42 5649 struct bfd_link_info *info)
0ba07910
AM
5650{
5651 struct elf_link_hash_entry *sh;
5652 size_t len1, len2, len3;
5653 char *name;
ac39eb42
AM
5654 const char *stub;
5655 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5656
a877a2b6 5657 if (info->shared)
ac39eb42
AM
5658 stub = ".plt_pic32.";
5659 else
5660 stub = ".plt_call32.";
0ba07910
AM
5661
5662 len1 = strlen (h->root.root.string);
ac39eb42 5663 len2 = strlen (stub);
0ba07910
AM
5664 len3 = 0;
5665 if (ent->sec)
5666 len3 = strlen (ent->sec->name);
ac39eb42 5667 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
5668 if (name == NULL)
5669 return FALSE;
5670 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5671 if (ent->sec)
5672 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
5673 memcpy (name + 8 + len3, stub, len2);
5674 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
5675 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5676 if (sh == NULL)
5677 return FALSE;
5678 if (sh->root.type == bfd_link_hash_new)
5679 {
5680 sh->root.type = bfd_link_hash_defined;
5681 sh->root.u.def.section = htab->glink;
5682 sh->root.u.def.value = ent->glink_offset;
5683 sh->ref_regular = 1;
5684 sh->def_regular = 1;
5685 sh->ref_regular_nonweak = 1;
5686 sh->forced_local = 1;
5687 sh->non_elf = 0;
5688 }
5689 return TRUE;
5690}
5691
3b36f7e6
AM
5692/* Allocate NEED contiguous space in .got, and return the offset.
5693 Handles allocation of the got header when crossing 32k. */
5694
5695static bfd_vma
5696allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5697{
5698 bfd_vma where;
4a3dc543 5699 unsigned int max_before_header;
3b36f7e6 5700
4a3dc543 5701 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
5702 {
5703 where = htab->got->size;
5704 htab->got->size += need;
5705 }
3b36f7e6
AM
5706 else
5707 {
4a3dc543
RS
5708 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5709 if (need <= htab->got_gap)
3b36f7e6 5710 {
4a3dc543
RS
5711 where = max_before_header - htab->got_gap;
5712 htab->got_gap -= need;
5713 }
5714 else
5715 {
5716 if (htab->got->size + need > max_before_header
5717 && htab->got->size <= max_before_header)
5718 {
5719 htab->got_gap = max_before_header - htab->got->size;
5720 htab->got->size = max_before_header + htab->got_header_size;
5721 }
5722 where = htab->got->size;
5723 htab->got->size += need;
3b36f7e6 5724 }
3b36f7e6
AM
5725 }
5726 return where;
5727}
5728
25dbc73a 5729/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 5730
b34976b6 5731static bfd_boolean
25dbc73a 5732allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 5733{
25dbc73a
AM
5734 struct bfd_link_info *info = inf;
5735 struct ppc_elf_link_hash_entry *eh;
7619e7c7 5736 struct ppc_elf_link_hash_table *htab;
6061a67d 5737 struct elf_dyn_relocs *p;
252b5132 5738
25dbc73a 5739 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5740 return TRUE;
252b5132 5741
7619e7c7 5742 htab = ppc_elf_hash_table (info);
e054468f
AM
5743 if (htab->elf.dynamic_sections_created
5744 || h->type == STT_GNU_IFUNC)
252b5132 5745 {
a6aa5195
AM
5746 struct plt_entry *ent;
5747 bfd_boolean doneone = FALSE;
28e99bb6 5748 bfd_vma plt_offset = 0, glink_offset = 0;
e054468f 5749 bfd_boolean dyn;
28e99bb6 5750
a6aa5195
AM
5751 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5752 if (ent->plt.refcount > 0)
5753 {
5754 /* Make sure this symbol is output as a dynamic symbol. */
5755 if (h->dynindx == -1
e054468f
AM
5756 && !h->forced_local
5757 && !h->def_regular
5758 && htab->elf.dynamic_sections_created)
a6aa5195
AM
5759 {
5760 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5761 return FALSE;
5762 }
252b5132 5763
e054468f 5764 dyn = htab->elf.dynamic_sections_created;
a6aa5195 5765 if (info->shared
e054468f
AM
5766 || h->type == STT_GNU_IFUNC
5767 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
a6aa5195
AM
5768 {
5769 asection *s = htab->plt;
25f23106 5770 if (!dyn || h->dynindx == -1)
e054468f 5771 s = htab->iplt;
7619e7c7 5772
25f23106 5773 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
a6aa5195 5774 {
a6aa5195 5775 if (!doneone)
28e99bb6
AM
5776 {
5777 plt_offset = s->size;
5778 s->size += 4;
5779 }
5780 ent->plt.offset = plt_offset;
d7128ce4 5781
a6aa5195 5782 s = htab->glink;
a877a2b6 5783 if (!doneone || info->shared)
28e99bb6
AM
5784 {
5785 glink_offset = s->size;
5786 s->size += GLINK_ENTRY_SIZE;
a7f2871e 5787 if (h == htab->tls_get_addr
5446cbdf 5788 && !htab->params->no_tls_get_addr_opt)
a7f2871e 5789 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
28e99bb6
AM
5790 }
5791 if (!doneone
5792 && !info->shared
625af618 5793 && h->def_dynamic
a6aa5195
AM
5794 && !h->def_regular)
5795 {
5796 h->root.u.def.section = s;
28e99bb6 5797 h->root.u.def.value = glink_offset;
a6aa5195 5798 }
28e99bb6 5799 ent->glink_offset = glink_offset;
0ba07910 5800
5446cbdf 5801 if (htab->params->emit_stub_syms
ac39eb42 5802 && !add_stub_sym (ent, h, info))
0ba07910 5803 return FALSE;
a6aa5195
AM
5804 }
5805 else
5806 {
a6aa5195
AM
5807 if (!doneone)
5808 {
28e99bb6
AM
5809 /* If this is the first .plt entry, make room
5810 for the special first entry. */
5811 if (s->size == 0)
9d8504b1 5812 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
5813
5814 /* The PowerPC PLT is actually composed of two
5815 parts, the first part is 2 words (for a load
5816 and a jump), and then there is a remaining
5817 word available at the end. */
9d8504b1
PB
5818 plt_offset = (htab->plt_initial_entry_size
5819 + (htab->plt_slot_size
5820 * ((s->size
5821 - htab->plt_initial_entry_size)
5822 / htab->plt_entry_size)));
28e99bb6
AM
5823
5824 /* If this symbol is not defined in a regular
5825 file, and we are not generating a shared
5b914448 5826 library, then set the symbol to this location
de972ffa
AM
5827 in the .plt. This is to avoid text
5828 relocations, and is required to make
28e99bb6
AM
5829 function pointers compare as equal between
5830 the normal executable and the shared library. */
5831 if (! info->shared
625af618 5832 && h->def_dynamic
28e99bb6
AM
5833 && !h->def_regular)
5834 {
5835 h->root.u.def.section = s;
5836 h->root.u.def.value = plt_offset;
5837 }
5838
9d8504b1
PB
5839 /* Make room for this entry. */
5840 s->size += htab->plt_entry_size;
5841 /* After the 8192nd entry, room for two entries
5842 is allocated. */
4a3dc543 5843 if (htab->plt_type == PLT_OLD
9d8504b1
PB
5844 && (s->size - htab->plt_initial_entry_size)
5845 / htab->plt_entry_size
5846 > PLT_NUM_SINGLE_ENTRIES)
5847 s->size += htab->plt_entry_size;
a6aa5195 5848 }
28e99bb6 5849 ent->plt.offset = plt_offset;
a6aa5195 5850 }
25dbc73a 5851
a6aa5195
AM
5852 /* We also need to make an entry in the .rela.plt section. */
5853 if (!doneone)
5854 {
25f23106
AM
5855 if (!htab->elf.dynamic_sections_created
5856 || h->dynindx == -1)
e054468f
AM
5857 htab->reliplt->size += sizeof (Elf32_External_Rela);
5858 else
9d8504b1 5859 {
e054468f
AM
5860 htab->relplt->size += sizeof (Elf32_External_Rela);
5861
5862 if (htab->plt_type == PLT_VXWORKS)
9d8504b1 5863 {
e054468f
AM
5864 /* Allocate space for the unloaded relocations. */
5865 if (!info->shared
5866 && htab->elf.dynamic_sections_created)
9d8504b1 5867 {
e054468f
AM
5868 if (ent->plt.offset
5869 == (bfd_vma) htab->plt_initial_entry_size)
5870 {
5871 htab->srelplt2->size
5872 += (sizeof (Elf32_External_Rela)
5873 * VXWORKS_PLTRESOLVE_RELOCS);
5874 }
5875
9d8504b1 5876 htab->srelplt2->size
e054468f
AM
5877 += (sizeof (Elf32_External_Rela)
5878 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
9d8504b1
PB
5879 }
5880
e054468f
AM
5881 /* Every PLT entry has an associated GOT entry in
5882 .got.plt. */
5883 htab->sgotplt->size += 4;
9d8504b1 5884 }
9d8504b1 5885 }
a6aa5195
AM
5886 doneone = TRUE;
5887 }
5888 }
5889 else
5890 ent->plt.offset = (bfd_vma) -1;
a6aa5195 5891 }
2ce859a1
AM
5892 else
5893 ent->plt.offset = (bfd_vma) -1;
5894
5895 if (!doneone)
5896 {
5897 h->plt.plist = NULL;
5898 h->needs_plt = 0;
5899 }
25dbc73a
AM
5900 }
5901 else
5902 {
a6aa5195 5903 h->plt.plist = NULL;
25dbc73a
AM
5904 h->needs_plt = 0;
5905 }
5906
5907 eh = (struct ppc_elf_link_hash_entry *) h;
5908 if (eh->elf.got.refcount > 0)
5909 {
d6e14abc
AM
5910 bfd_boolean dyn;
5911 unsigned int need;
5912
25dbc73a
AM
5913 /* Make sure this symbol is output as a dynamic symbol. */
5914 if (eh->elf.dynindx == -1
b099ab9f 5915 && !eh->elf.forced_local
25f23106 5916 && eh->elf.type != STT_GNU_IFUNC
b099ab9f 5917 && htab->elf.dynamic_sections_created)
25dbc73a
AM
5918 {
5919 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 5920 return FALSE;
25dbc73a 5921 }
252b5132 5922
d6e14abc
AM
5923 need = 0;
5924 if ((eh->tls_mask & TLS_TLS) != 0)
25dbc73a 5925 {
d6e14abc 5926 if ((eh->tls_mask & TLS_LD) != 0)
252b5132 5927 {
d6e14abc
AM
5928 if (!eh->elf.def_dynamic)
5929 /* We'll just use htab->tlsld_got.offset. This should
5930 always be the case. It's a little odd if we have
5931 a local dynamic reloc against a non-local symbol. */
5932 htab->tlsld_got.refcount += 1;
5933 else
3b36f7e6 5934 need += 8;
252b5132 5935 }
d6e14abc
AM
5936 if ((eh->tls_mask & TLS_GD) != 0)
5937 need += 8;
5938 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5939 need += 4;
5940 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 5941 need += 4;
d6e14abc
AM
5942 }
5943 else
5944 need += 4;
5945 if (need == 0)
5946 eh->elf.got.offset = (bfd_vma) -1;
5947 else
5948 {
3b36f7e6 5949 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM
5950 dyn = htab->elf.dynamic_sections_created;
5951 if ((info->shared
5952 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5953 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5954 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 5955 {
91e21fb7 5956 asection *rsec = htab->relgot;
0bed072f
AM
5957
5958 if (eh->elf.type == STT_GNU_IFUNC)
5959 rsec = htab->reliplt;
3b36f7e6
AM
5960 /* All the entries we allocated need relocs.
5961 Except LD only needs one. */
d6e14abc
AM
5962 if ((eh->tls_mask & TLS_LD) != 0
5963 && eh->elf.def_dynamic)
3b36f7e6 5964 need -= 4;
25f23106 5965 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 5966 }
25dbc73a
AM
5967 }
5968 }
5969 else
5970 eh->elf.got.offset = (bfd_vma) -1;
252b5132 5971
b099ab9f 5972 if (eh->dyn_relocs == NULL
de972ffa 5973 || !htab->elf.dynamic_sections_created)
25dbc73a 5974 return TRUE;
252b5132 5975
25dbc73a
AM
5976 /* In the shared -Bsymbolic case, discard space allocated for
5977 dynamic pc-relative relocs against symbols which turn out to be
5978 defined in regular objects. For the normal shared case, discard
5979 space for relocs that have become local due to symbol visibility
5980 changes. */
5981
5982 if (info->shared)
5983 {
5984 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 5985 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
5986 generated via assembly. We want calls to protected symbols to
5987 resolve directly to the function rather than going via the plt.
5988 If people want function pointer comparisons to work as expected
5989 then they should avoid writing weird assembly. */
5990 if (SYMBOL_CALLS_LOCAL (info, h))
5991 {
6061a67d 5992 struct elf_dyn_relocs **pp;
25dbc73a
AM
5993
5994 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 5995 {
25dbc73a
AM
5996 p->count -= p->pc_count;
5997 p->pc_count = 0;
5998 if (p->count == 0)
5999 *pp = p->next;
6000 else
6001 pp = &p->next;
252b5132 6002 }
25dbc73a 6003 }
252b5132 6004
3348747a
NS
6005 if (htab->is_vxworks)
6006 {
6061a67d 6007 struct elf_dyn_relocs **pp;
3348747a
NS
6008
6009 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6010 {
6011 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6012 *pp = p->next;
6013 else
6014 pp = &p->next;
6015 }
6016 }
6017
89200bf8
AM
6018 /* Discard relocs on undefined symbols that must be local. */
6019 if (eh->dyn_relocs != NULL
6020 && h->root.type == bfd_link_hash_undefined
6021 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6022 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6023 eh->dyn_relocs = NULL;
6024
25dbc73a
AM
6025 /* Also discard relocs on undefined weak syms with non-default
6026 visibility. */
cab87ef9
AM
6027 if (eh->dyn_relocs != NULL
6028 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 6029 {
dfbb6ac9
AM
6030 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6031 eh->dyn_relocs = NULL;
6032
6033 /* Make sure undefined weak symbols are output as a dynamic
6034 symbol in PIEs. */
6035 else if (h->dynindx == -1
e054468f
AM
6036 && !h->forced_local
6037 && !h->def_regular)
dfbb6ac9
AM
6038 {
6039 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6040 return FALSE;
6041 }
25dbc73a
AM
6042 }
6043 }
6044 else if (ELIMINATE_COPY_RELOCS)
6045 {
6046 /* For the non-shared case, discard space for relocs against
6047 symbols which turn out to need copy relocs or are not
6048 dynamic. */
7619e7c7 6049
25dbc73a 6050 if (!h->non_got_ref
25dbc73a
AM
6051 && !h->def_regular)
6052 {
6053 /* Make sure this symbol is output as a dynamic symbol.
6054 Undefined weak syms won't yet be marked as dynamic. */
6055 if (h->dynindx == -1
25f23106 6056 && !h->forced_local)
25dbc73a
AM
6057 {
6058 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6059 return FALSE;
6060 }
7619e7c7 6061
25dbc73a
AM
6062 /* If that succeeded, we know we'll be keeping all the
6063 relocs. */
6064 if (h->dynindx != -1)
6065 goto keep;
6066 }
252b5132 6067
25dbc73a 6068 eh->dyn_relocs = NULL;
252b5132 6069
25dbc73a
AM
6070 keep: ;
6071 }
252b5132 6072
25dbc73a
AM
6073 /* Finally, allocate space. */
6074 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6075 {
6076 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6077 if (eh->elf.type == STT_GNU_IFUNC)
25f23106 6078 sreloc = htab->reliplt;
25dbc73a
AM
6079 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6080 }
252b5132 6081
25dbc73a
AM
6082 return TRUE;
6083}
7619e7c7 6084
625af618
AM
6085/* Set DF_TEXTREL if we find any dynamic relocs that apply to
6086 read-only sections. */
7619e7c7 6087
25dbc73a 6088static bfd_boolean
625af618 6089maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 6090{
25dbc73a
AM
6091 if (h->root.type == bfd_link_hash_indirect)
6092 return TRUE;
252b5132 6093
625af618 6094 if (readonly_dynrelocs (h))
25dbc73a 6095 {
625af618 6096 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 6097
625af618
AM
6098 /* Not an error, just cut short the traversal. */
6099 return FALSE;
25dbc73a
AM
6100 }
6101 return TRUE;
6102}
6103
6177242a
AM
6104static const unsigned char glink_eh_frame_cie[] =
6105{
6106 0, 0, 0, 16, /* length. */
6107 0, 0, 0, 0, /* id. */
6108 1, /* CIE version. */
6109 'z', 'R', 0, /* Augmentation string. */
6110 4, /* Code alignment. */
6111 0x7c, /* Data alignment. */
6112 65, /* RA reg. */
6113 1, /* Augmentation size. */
6114 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6115 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6116};
6117
25dbc73a
AM
6118/* Set the sizes of the dynamic sections. */
6119
6120static bfd_boolean
93d1b056 6121ppc_elf_size_dynamic_sections (bfd *output_bfd,
25dbc73a
AM
6122 struct bfd_link_info *info)
6123{
6124 struct ppc_elf_link_hash_table *htab;
6125 asection *s;
6126 bfd_boolean relocs;
6127 bfd *ibfd;
7fce784e 6128
252b5132 6129#ifdef DEBUG
25dbc73a 6130 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 6131#endif
252b5132 6132
25dbc73a
AM
6133 htab = ppc_elf_hash_table (info);
6134 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 6135
25dbc73a
AM
6136 if (elf_hash_table (info)->dynamic_sections_created)
6137 {
6138 /* Set the contents of the .interp section to the interpreter. */
6139 if (info->executable)
6140 {
3d4d4302 6141 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
25dbc73a
AM
6142 BFD_ASSERT (s != NULL);
6143 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6144 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6145 }
6146 }
252b5132 6147
4a3dc543 6148 if (htab->plt_type == PLT_OLD)
d7128ce4 6149 htab->got_header_size = 16;
4a3dc543 6150 else if (htab->plt_type == PLT_NEW)
d7128ce4 6151 htab->got_header_size = 12;
252b5132 6152
25dbc73a
AM
6153 /* Set up .got offsets for local syms, and space for local dynamic
6154 relocs. */
c72f2fb2 6155 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
25dbc73a
AM
6156 {
6157 bfd_signed_vma *local_got;
6158 bfd_signed_vma *end_local_got;
e054468f
AM
6159 struct plt_entry **local_plt;
6160 struct plt_entry **end_local_plt;
25dbc73a
AM
6161 char *lgot_masks;
6162 bfd_size_type locsymcount;
6163 Elf_Internal_Shdr *symtab_hdr;
7fce784e 6164
0c8d6e5c 6165 if (!is_ppc_elf (ibfd))
25dbc73a 6166 continue;
7fce784e 6167
25dbc73a
AM
6168 for (s = ibfd->sections; s != NULL; s = s->next)
6169 {
f95f8542 6170 struct ppc_dyn_relocs *p;
252b5132 6171
f95f8542 6172 for (p = ((struct ppc_dyn_relocs *)
25dbc73a
AM
6173 elf_section_data (s)->local_dynrel);
6174 p != NULL;
6175 p = p->next)
6176 {
6177 if (!bfd_is_abs_section (p->sec)
6178 && bfd_is_abs_section (p->sec->output_section))
6179 {
6180 /* Input section has been discarded, either because
6181 it is a copy of a linkonce section or due to
6182 linker script /DISCARD/, so we'll be discarding
6183 the relocs too. */
7fce784e 6184 }
3348747a
NS
6185 else if (htab->is_vxworks
6186 && strcmp (p->sec->output_section->name,
6187 ".tls_vars") == 0)
6188 {
6189 /* Relocations in vxworks .tls_vars sections are
6190 handled specially by the loader. */
6191 }
25dbc73a 6192 else if (p->count != 0)
7fce784e 6193 {
25f23106 6194 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6195 if (p->ifunc)
25f23106
AM
6196 sreloc = htab->reliplt;
6197 sreloc->size += p->count * sizeof (Elf32_External_Rela);
25dbc73a
AM
6198 if ((p->sec->output_section->flags
6199 & (SEC_READONLY | SEC_ALLOC))
6200 == (SEC_READONLY | SEC_ALLOC))
6201 info->flags |= DF_TEXTREL;
7fce784e 6202 }
252b5132 6203 }
252b5132 6204 }
252b5132 6205
25dbc73a
AM
6206 local_got = elf_local_got_refcounts (ibfd);
6207 if (!local_got)
6208 continue;
252b5132 6209
0ffa91dd 6210 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
6211 locsymcount = symtab_hdr->sh_info;
6212 end_local_got = local_got + locsymcount;
e054468f
AM
6213 local_plt = (struct plt_entry **) end_local_got;
6214 end_local_plt = local_plt + locsymcount;
6215 lgot_masks = (char *) end_local_plt;
91d6fa6a 6216
25dbc73a
AM
6217 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6218 if (*local_got > 0)
6219 {
d6e14abc
AM
6220 unsigned int need = 0;
6221 if ((*lgot_masks & TLS_TLS) != 0)
25dbc73a 6222 {
d6e14abc
AM
6223 if ((*lgot_masks & TLS_GD) != 0)
6224 need += 8;
6225 if ((*lgot_masks & TLS_LD) != 0)
6226 htab->tlsld_got.refcount += 1;
6227 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6228 need += 4;
6229 if ((*lgot_masks & TLS_DTPREL) != 0)
6230 need += 4;
25dbc73a 6231 }
d6e14abc
AM
6232 else
6233 need += 4;
6234 if (need == 0)
6235 *local_got = (bfd_vma) -1;
25dbc73a
AM
6236 else
6237 {
3b36f7e6 6238 *local_got = allocate_got (htab, need);
25dbc73a 6239 if (info->shared)
0bed072f
AM
6240 {
6241 asection *srel = htab->relgot;
6242 if ((*lgot_masks & PLT_IFUNC) != 0)
6243 srel = htab->reliplt;
6244 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6245 }
25dbc73a
AM
6246 }
6247 }
6248 else
6249 *local_got = (bfd_vma) -1;
e054468f
AM
6250
6251 if (htab->is_vxworks)
6252 continue;
6253
6254 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6255 for (; local_plt < end_local_plt; ++local_plt)
6256 {
6257 struct plt_entry *ent;
6258 bfd_boolean doneone = FALSE;
6259 bfd_vma plt_offset = 0, glink_offset = 0;
6260
6261 for (ent = *local_plt; ent != NULL; ent = ent->next)
6262 if (ent->plt.refcount > 0)
6263 {
91d6fa6a 6264 s = htab->iplt;
e054468f
AM
6265
6266 if (!doneone)
6267 {
6268 plt_offset = s->size;
6269 s->size += 4;
6270 }
6271 ent->plt.offset = plt_offset;
6272
6273 s = htab->glink;
a877a2b6 6274 if (!doneone || info->shared)
e054468f
AM
6275 {
6276 glink_offset = s->size;
6277 s->size += GLINK_ENTRY_SIZE;
6278 }
6279 ent->glink_offset = glink_offset;
6280
6281 if (!doneone)
6282 {
25f23106 6283 htab->reliplt->size += sizeof (Elf32_External_Rela);
e054468f
AM
6284 doneone = TRUE;
6285 }
6286 }
6287 else
6288 ent->plt.offset = (bfd_vma) -1;
6289 }
25dbc73a 6290 }
252b5132 6291
b7fcf6f6
AM
6292 /* Allocate space for global sym dynamic relocs. */
6293 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6294
3b36f7e6
AM
6295 if (htab->tlsld_got.refcount > 0)
6296 {
6297 htab->tlsld_got.offset = allocate_got (htab, 8);
6298 if (info->shared)
6299 htab->relgot->size += sizeof (Elf32_External_Rela);
6300 }
6301 else
6302 htab->tlsld_got.offset = (bfd_vma) -1;
6303
4a3dc543 6304 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
6305 {
6306 unsigned int g_o_t = 32768;
6307
4d962050
AM
6308 /* If we haven't allocated the header, do so now. When we get here,
6309 for old plt/got the got size will be 0 to 32764 (not allocated),
6310 or 32780 to 65536 (header allocated). For new plt/got, the
6311 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM
6312 if (htab->got->size <= 32768)
6313 {
6314 g_o_t = htab->got->size;
4a3dc543 6315 if (htab->plt_type == PLT_OLD)
4d962050 6316 g_o_t += 4;
3b36f7e6
AM
6317 htab->got->size += htab->got_header_size;
6318 }
3b36f7e6
AM
6319
6320 htab->elf.hgot->root.u.def.value = g_o_t;
6321 }
bd6c6e2b
AM
6322 if (info->shared)
6323 {
6324 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
93d1b056
AM
6325
6326 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6327 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
bd6c6e2b 6328 }
15bfcc77
AM
6329 if (info->emitrelocations)
6330 {
6331 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6332
6333 if (sda != NULL && sda->ref_regular)
6334 sda->root.u.def.section->flags |= SEC_KEEP;
6335 sda = htab->sdata[1].sym;
6336 if (sda != NULL && sda->ref_regular)
6337 sda->root.u.def.section->flags |= SEC_KEEP;
6338 }
3b36f7e6 6339
e054468f
AM
6340 if (htab->glink != NULL
6341 && htab->glink->size != 0
6342 && htab->elf.dynamic_sections_created)
d7128ce4
AM
6343 {
6344 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM
6345 /* Space for the branch table. */
6346 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6347 /* Pad out to align the start of PLTresolve. */
5446cbdf
AM
6348 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6349 ? 63 : 15);
d7128ce4 6350 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910 6351
5446cbdf 6352 if (htab->params->emit_stub_syms)
0ba07910
AM
6353 {
6354 struct elf_link_hash_entry *sh;
6355 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6356 TRUE, FALSE, FALSE);
6357 if (sh == NULL)
6358 return FALSE;
6359 if (sh->root.type == bfd_link_hash_new)
6360 {
6361 sh->root.type = bfd_link_hash_defined;
6362 sh->root.u.def.section = htab->glink;
6363 sh->root.u.def.value = htab->glink_pltresolve;
6364 sh->ref_regular = 1;
6365 sh->def_regular = 1;
6366 sh->ref_regular_nonweak = 1;
6367 sh->forced_local = 1;
6368 sh->non_elf = 0;
6369 }
6370 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6371 TRUE, FALSE, FALSE);
6372 if (sh == NULL)
6373 return FALSE;
6374 if (sh->root.type == bfd_link_hash_new)
6375 {
6376 sh->root.type = bfd_link_hash_defined;
6377 sh->root.u.def.section = htab->glink;
6378 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6379 sh->ref_regular = 1;
6380 sh->def_regular = 1;
6381 sh->ref_regular_nonweak = 1;
6382 sh->forced_local = 1;
6383 sh->non_elf = 0;
6384 }
6385 }
d7128ce4
AM
6386 }
6387
6177242a
AM
6388 if (htab->glink != NULL
6389 && htab->glink->size != 0
6390 && htab->glink_eh_frame != NULL
9a2a56cc
AM
6391 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6392 && _bfd_elf_eh_frame_present (info))
6177242a
AM
6393 {
6394 s = htab->glink_eh_frame;
6395 s->size = sizeof (glink_eh_frame_cie) + 20;
6396 if (info->shared)
6397 {
6398 s->size += 4;
6399 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6400 s->size += 4;
6401 }
6402 }
6403
25dbc73a
AM
6404 /* We've now determined the sizes of the various dynamic sections.
6405 Allocate memory for them. */
6406 relocs = FALSE;
6407 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 6408 {
9d8504b1
PB
6409 bfd_boolean strip_section = TRUE;
6410
25dbc73a
AM
6411 if ((s->flags & SEC_LINKER_CREATED) == 0)
6412 continue;
252b5132 6413
25dbc73a 6414 if (s == htab->plt
e054468f 6415 || s == htab->got)
25dbc73a 6416 {
9d8504b1
PB
6417 /* We'd like to strip these sections if they aren't needed, but if
6418 we've exported dynamic symbols from them we must leave them.
6419 It's too late to tell BFD to get rid of the symbols. */
e054468f 6420 if (htab->elf.hplt != NULL)
9d8504b1 6421 strip_section = FALSE;
25dbc73a
AM
6422 /* Strip this section if we don't need it; see the
6423 comment below. */
6424 }
e054468f
AM
6425 else if (s == htab->iplt
6426 || s == htab->glink
6177242a 6427 || s == htab->glink_eh_frame
e054468f
AM
6428 || s == htab->sgotplt
6429 || s == htab->sbss
6430 || s == htab->dynbss
15bfcc77 6431 || s == htab->dynsbss)
25dbc73a 6432 {
c9a2f333 6433 /* Strip these too. */
25dbc73a 6434 }
15bfcc77
AM
6435 else if (s == htab->sdata[0].section
6436 || s == htab->sdata[1].section)
6437 {
6438 strip_section = (s->flags & SEC_KEEP) == 0;
6439 }
a0f49396
NC
6440 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6441 ".rela"))
25dbc73a 6442 {
c456f082 6443 if (s->size != 0)
25dbc73a
AM
6444 {
6445 /* Remember whether there are any relocation sections. */
6446 relocs = TRUE;
252b5132 6447
25dbc73a
AM
6448 /* We use the reloc_count field as a counter if we need
6449 to copy relocs into the output file. */
6450 s->reloc_count = 0;
252b5132
RH
6451 }
6452 }
25dbc73a
AM
6453 else
6454 {
6455 /* It's not one of our sections, so don't allocate space. */
6456 continue;
6457 }
252b5132 6458
9d8504b1 6459 if (s->size == 0 && strip_section)
25dbc73a 6460 {
c456f082
AM
6461 /* If we don't need this section, strip it from the
6462 output file. This is mostly to handle .rela.bss and
6463 .rela.plt. We must create both sections in
6464 create_dynamic_sections, because they must be created
6465 before the linker maps input sections to output
6466 sections. The linker does that before
6467 adjust_dynamic_symbol is called, and it is that
6468 function which decides whether anything needs to go
6469 into these sections. */
8423293d 6470 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
6471 continue;
6472 }
7fce784e 6473
d7128ce4 6474 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
6475 continue;
6476
25dbc73a
AM
6477 /* Allocate memory for the section contents. */
6478 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6479 if (s->contents == NULL)
6480 return FALSE;
6481 }
252b5132 6482
25dbc73a 6483 if (htab->elf.dynamic_sections_created)
7619e7c7 6484 {
25dbc73a
AM
6485 /* Add some entries to the .dynamic section. We fill in the
6486 values later, in ppc_elf_finish_dynamic_sections, but we
6487 must add the entries now so that we get the correct size for
6488 the .dynamic section. The DT_DEBUG entry is filled in by the
6489 dynamic linker and used by the debugger. */
6490#define add_dynamic_entry(TAG, VAL) \
6491 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 6492
25dbc73a 6493 if (info->executable)
7619e7c7 6494 {
25dbc73a
AM
6495 if (!add_dynamic_entry (DT_DEBUG, 0))
6496 return FALSE;
7619e7c7
AM
6497 }
6498
25dbc73a 6499 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 6500 {
25dbc73a
AM
6501 if (!add_dynamic_entry (DT_PLTGOT, 0)
6502 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6503 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6504 || !add_dynamic_entry (DT_JMPREL, 0))
6505 return FALSE;
6506 }
7619e7c7 6507
c7e17e05
AM
6508 if (htab->plt_type == PLT_NEW
6509 && htab->glink != NULL
6510 && htab->glink->size != 0)
d7128ce4 6511 {
1fe44d79 6512 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4 6513 return FALSE;
5446cbdf 6514 if (!htab->params->no_tls_get_addr_opt
a7f2871e
AM
6515 && htab->tls_get_addr != NULL
6516 && htab->tls_get_addr->plt.plist != NULL
e8910a83 6517 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
a7f2871e 6518 return FALSE;
d7128ce4
AM
6519 }
6520
25dbc73a
AM
6521 if (relocs)
6522 {
6523 if (!add_dynamic_entry (DT_RELA, 0)
6524 || !add_dynamic_entry (DT_RELASZ, 0)
6525 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6526 return FALSE;
6527 }
7619e7c7 6528
25dbc73a
AM
6529 /* If any dynamic relocs apply to a read-only section, then we
6530 need a DT_TEXTREL entry. */
6531 if ((info->flags & DF_TEXTREL) == 0)
625af618 6532 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 6533 info);
7619e7c7 6534
25dbc73a
AM
6535 if ((info->flags & DF_TEXTREL) != 0)
6536 {
6537 if (!add_dynamic_entry (DT_TEXTREL, 0))
6538 return FALSE;
7619e7c7 6539 }
7a2b07ff
NS
6540 if (htab->is_vxworks
6541 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6542 return FALSE;
6543 }
25dbc73a
AM
6544#undef add_dynamic_entry
6545
7e01508c
AM
6546 if (htab->glink_eh_frame != NULL
6547 && htab->glink_eh_frame->contents != NULL)
6548 {
6549 unsigned char *p = htab->glink_eh_frame->contents;
6550 bfd_vma val;
6551
6552 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6553 /* CIE length (rewrite in case little-endian). */
6554 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6555 p += sizeof (glink_eh_frame_cie);
6556 /* FDE length. */
6557 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6558 bfd_put_32 (htab->elf.dynobj, val, p);
6559 p += 4;
6560 /* CIE pointer. */
6561 val = p - htab->glink_eh_frame->contents;
6562 bfd_put_32 (htab->elf.dynobj, val, p);
6563 p += 4;
6564 /* Offset to .glink. Set later. */
6565 p += 4;
6566 /* .glink size. */
6567 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6568 p += 4;
6569 /* Augmentation. */
6570 p += 1;
6571
6572 if (info->shared
6573 && htab->elf.dynamic_sections_created)
6574 {
6575 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6576 if (adv < 64)
6577 *p++ = DW_CFA_advance_loc + adv;
6578 else if (adv < 256)
6579 {
6580 *p++ = DW_CFA_advance_loc1;
6581 *p++ = adv;
6582 }
6583 else if (adv < 65536)
6584 {
6585 *p++ = DW_CFA_advance_loc2;
6586 bfd_put_16 (htab->elf.dynobj, adv, p);
6587 p += 2;
6588 }
6589 else
6590 {
6591 *p++ = DW_CFA_advance_loc4;
6592 bfd_put_32 (htab->elf.dynobj, adv, p);
6593 p += 4;
6594 }
6595 *p++ = DW_CFA_register;
6596 *p++ = 65;
6597 p++;
6598 *p++ = DW_CFA_advance_loc + 4;
6599 *p++ = DW_CFA_restore_extended;
6600 *p++ = 65;
6601 }
6602 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6603 == htab->glink_eh_frame->size);
6604 }
6605
7619e7c7
AM
6606 return TRUE;
6607}
0eb4a168 6608
93d1b056
AM
6609/* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6610 if it looks like nothing is using them. */
6611
6612static void
6613maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6614{
6615 struct elf_link_hash_entry *sda = lsect->sym;
6616
6617 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6618 {
6619 asection *s;
6620
6621 s = bfd_get_section_by_name (output_bfd, lsect->name);
6622 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6623 {
6624 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6625 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6626 {
6627 sda->def_regular = 0;
6628 /* This is somewhat magic. See elf_link_output_extsym. */
6629 sda->ref_dynamic = 1;
6630 sda->forced_local = 0;
6631 }
6632 }
6633 }
6634}
6635
6636void
6637ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6638{
6639 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6640
6641 if (htab != NULL)
6642 {
6643 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6644 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6645 }
6646}
6647
6648
0eb4a168
AM
6649/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6650
6651static bfd_boolean
6652ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6653{
6654 if (h->plt.plist != NULL
6655 && !h->def_regular
6656 && (!h->pointer_equality_needed
6657 || !h->ref_regular_nonweak))
6658 return FALSE;
6659
6660 return _bfd_elf_hash_symbol (h);
6661}
25dbc73a
AM
6662\f
6663#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6664
01017ef8
NS
6665/* Relaxation trampolines. r12 is available for clobbering (r11, is
6666 used for some functions that are allowed to break the ABI). */
25dbc73a
AM
6667static const int shared_stub_entry[] =
6668 {
6669 0x7c0802a6, /* mflr 0 */
6670 0x429f0005, /* bcl 20, 31, .Lxxx */
01017ef8
NS
6671 0x7d8802a6, /* mflr 12 */
6672 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
53291d1f 6673 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
25dbc73a 6674 0x7c0803a6, /* mtlr 0 */
01017ef8 6675 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6676 0x4e800420, /* bctr */
6677 };
6678
6679static const int stub_entry[] =
6680 {
01017ef8
NS
6681 0x3d800000, /* lis 12,xxx@ha */
6682 0x398c0000, /* addi 12,12,xxx@l */
6683 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6684 0x4e800420, /* bctr */
6685 };
6686
5446cbdf
AM
6687struct ppc_elf_relax_info
6688{
6689 unsigned int workaround_size;
6690};
6691
6692/* This function implements long branch trampolines, and the ppc476
6693 icache bug workaround. Any section needing trampolines or patch
6694 space for the workaround has its size extended so that we can
53291d1f 6695 add trampolines at the end of the section. */
5446cbdf 6696
25dbc73a
AM
6697static bfd_boolean
6698ppc_elf_relax_section (bfd *abfd,
6699 asection *isec,
6700 struct bfd_link_info *link_info,
6701 bfd_boolean *again)
6702{
6703 struct one_fixup
6704 {
6705 struct one_fixup *next;
6706 asection *tsec;
01017ef8
NS
6707 /* Final link, can use the symbol offset. For a
6708 relocatable link we use the symbol's index. */
25dbc73a
AM
6709 bfd_vma toff;
6710 bfd_vma trampoff;
6711 };
7619e7c7 6712
25dbc73a
AM
6713 Elf_Internal_Shdr *symtab_hdr;
6714 bfd_byte *contents = NULL;
6715 Elf_Internal_Sym *isymbuf = NULL;
6716 Elf_Internal_Rela *internal_relocs = NULL;
5446cbdf 6717 Elf_Internal_Rela *irel, *irelend = NULL;
25dbc73a 6718 struct one_fixup *fixups = NULL;
5446cbdf 6719 struct ppc_elf_relax_info *relax_info = NULL;
9bc4e62b 6720 unsigned changes = 0;
5446cbdf 6721 bfd_boolean workaround_change;
d7128ce4 6722 struct ppc_elf_link_hash_table *htab;
5446cbdf 6723 bfd_size_type trampbase, trampoff, newsize;
a6aa5195 6724 asection *got2;
50248c89 6725 bfd_boolean maybe_pasted;
7619e7c7 6726
25dbc73a 6727 *again = FALSE;
7619e7c7 6728
5446cbdf 6729 /* No need to do anything with non-alloc or non-code sections. */
c87b5a93 6730 if ((isec->flags & SEC_ALLOC) == 0
a8ad78a7 6731 || (isec->flags & SEC_CODE) == 0
5446cbdf
AM
6732 || (isec->flags & SEC_LINKER_CREATED) != 0
6733 || isec->size < 4)
25dbc73a 6734 return TRUE;
7619e7c7 6735
c8a1f254
NS
6736 /* We cannot represent the required PIC relocs in the output, so don't
6737 do anything. The linker doesn't support mixing -shared and -r
6738 anyway. */
6739 if (link_info->relocatable && link_info->shared)
795bc6b3 6740 return TRUE;
5b914448 6741
5446cbdf
AM
6742 htab = ppc_elf_hash_table (link_info);
6743 if (htab == NULL)
6744 return TRUE;
6745
6746 isec->size = (isec->size + 3) & -4;
6747 if (isec->rawsize == 0)
6748 isec->rawsize = isec->size;
6749 trampbase = isec->size;
6750
53291d1f
AM
6751 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6752 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6753 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6754
5446cbdf
AM
6755 if (htab->params->ppc476_workaround)
6756 {
6757 if (elf_section_data (isec)->sec_info == NULL)
6758 {
5446cbdf
AM
6759 elf_section_data (isec)->sec_info
6760 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6761 if (elf_section_data (isec)->sec_info == NULL)
6762 return FALSE;
6763 }
6764 relax_info = elf_section_data (isec)->sec_info;
6765 trampbase -= relax_info->workaround_size;
6766 }
6767
50248c89
AM
6768 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6769 || strcmp (isec->output_section->name, ".fini") == 0);
25dbc73a 6770 /* Space for a branch around any trampolines. */
5446cbdf
AM
6771 trampoff = trampbase;
6772 if (maybe_pasted && trampbase == isec->rawsize)
50248c89 6773 trampoff += 4;
7619e7c7 6774
0ffa91dd 6775 symtab_hdr = &elf_symtab_hdr (abfd);
7619e7c7 6776
5446cbdf 6777 if (htab->params->branch_trampolines)
7619e7c7 6778 {
5446cbdf
AM
6779 /* Get a copy of the native relocations. */
6780 if (isec->reloc_count != 0)
25dbc73a 6781 {
5446cbdf
AM
6782 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6783 link_info->keep_memory);
6784 if (internal_relocs == NULL)
6785 goto error_return;
25dbc73a 6786 }
7619e7c7 6787
5446cbdf
AM
6788 got2 = bfd_get_section_by_name (abfd, ".got2");
6789
6790 irelend = internal_relocs + isec->reloc_count;
6791 for (irel = internal_relocs; irel < irelend; irel++)
25dbc73a 6792 {
5446cbdf
AM
6793 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6794 bfd_vma toff, roff;
6795 asection *tsec;
6796 struct one_fixup *f;
6797 size_t insn_offset = 0;
6798 bfd_vma max_branch_offset, val;
6799 bfd_byte *hit_addr;
6800 unsigned long t0;
6801 struct elf_link_hash_entry *h;
6802 struct plt_entry **plist;
6803 unsigned char sym_type;
6804
6805 switch (r_type)
6806 {
6807 case R_PPC_REL24:
6808 case R_PPC_LOCAL24PC:
6809 case R_PPC_PLTREL24:
6810 max_branch_offset = 1 << 25;
6811 break;
6812
6813 case R_PPC_REL14:
6814 case R_PPC_REL14_BRTAKEN:
6815 case R_PPC_REL14_BRNTAKEN:
6816 max_branch_offset = 1 << 15;
6817 break;
7fce784e 6818
5446cbdf
AM
6819 default:
6820 continue;
6821 }
6822
6823 /* Get the value of the symbol referred to by the reloc. */
6824 h = NULL;
6825 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
25dbc73a 6826 {
5446cbdf
AM
6827 /* A local symbol. */
6828 Elf_Internal_Sym *isym;
6829
6830 /* Read this BFD's local symbols. */
25dbc73a 6831 if (isymbuf == NULL)
5446cbdf
AM
6832 {
6833 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6834 if (isymbuf == NULL)
6835 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6836 symtab_hdr->sh_info, 0,
6837 NULL, NULL, NULL);
6838 if (isymbuf == 0)
6839 goto error_return;
6840 }
6841 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6842 if (isym->st_shndx == SHN_UNDEF)
6843 tsec = bfd_und_section_ptr;
6844 else if (isym->st_shndx == SHN_ABS)
6845 tsec = bfd_abs_section_ptr;
6846 else if (isym->st_shndx == SHN_COMMON)
6847 tsec = bfd_com_section_ptr;
6848 else
6849 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6850
6851 toff = isym->st_value;
6852 sym_type = ELF_ST_TYPE (isym->st_info);
25dbc73a 6853 }
25dbc73a 6854 else
5446cbdf
AM
6855 {
6856 /* Global symbol handling. */
6857 unsigned long indx;
7fce784e 6858
5446cbdf
AM
6859 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6860 h = elf_sym_hashes (abfd)[indx];
7619e7c7 6861
5446cbdf
AM
6862 while (h->root.type == bfd_link_hash_indirect
6863 || h->root.type == bfd_link_hash_warning)
6864 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 6865
5446cbdf
AM
6866 if (h->root.type == bfd_link_hash_defined
6867 || h->root.type == bfd_link_hash_defweak)
6868 {
6869 tsec = h->root.u.def.section;
6870 toff = h->root.u.def.value;
6871 }
6872 else if (h->root.type == bfd_link_hash_undefined
6873 || h->root.type == bfd_link_hash_undefweak)
6874 {
6875 tsec = bfd_und_section_ptr;
6876 toff = link_info->relocatable ? indx : 0;
6877 }
6878 else
6879 continue;
6880
9f7552cf
AM
6881 /* If this branch is to __tls_get_addr then we may later
6882 optimise away the call. We won't be needing a long-
6883 branch stub in that case. */
6884 if (link_info->executable
6885 && !link_info->relocatable
6886 && h == htab->tls_get_addr
6887 && irel != internal_relocs)
6888 {
6889 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6890 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6891 unsigned int tls_mask = 0;
6892
6893 /* The previous reloc should be one of R_PPC_TLSGD or
6894 R_PPC_TLSLD, or for older object files, a reloc
6895 on the __tls_get_addr arg setup insn. Get tls
6896 mask bits from the symbol on that reloc. */
6897 if (t_symndx < symtab_hdr->sh_info)
6898 {
6899 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6900
6901 if (local_got_offsets != NULL)
6902 {
6903 struct plt_entry **local_plt = (struct plt_entry **)
6904 (local_got_offsets + symtab_hdr->sh_info);
6905 char *lgot_masks = (char *)
6906 (local_plt + symtab_hdr->sh_info);
6907 tls_mask = lgot_masks[t_symndx];
6908 }
6909 }
6910 else
6911 {
6912 struct elf_link_hash_entry *th
6913 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6914
6915 while (th->root.type == bfd_link_hash_indirect
6916 || th->root.type == bfd_link_hash_warning)
6917 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6918
6919 tls_mask
6920 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6921 }
6922
6923 /* The mask bits tell us if the call will be
6924 optimised away. */
6925 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6926 && (t_rtype == R_PPC_TLSGD
6927 || t_rtype == R_PPC_GOT_TLSGD16
6928 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6929 continue;
6930 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6931 && (t_rtype == R_PPC_TLSLD
6932 || t_rtype == R_PPC_GOT_TLSLD16
6933 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6934 continue;
6935 }
6936
5446cbdf
AM
6937 sym_type = h->type;
6938 }
7619e7c7 6939
5446cbdf
AM
6940 /* The condition here under which we call find_plt_ent must
6941 match that in relocate_section. If we call find_plt_ent here
6942 but not in relocate_section, or vice versa, then the branch
6943 destination used here may be incorrect. */
6944 plist = NULL;
6945 if (h != NULL)
25dbc73a 6946 {
5446cbdf
AM
6947 /* We know is_branch_reloc (r_type) is true. */
6948 if (h->type == STT_GNU_IFUNC
6949 || r_type == R_PPC_PLTREL24)
6950 plist = &h->plt.plist;
25dbc73a 6951 }
5446cbdf
AM
6952 else if (sym_type == STT_GNU_IFUNC
6953 && elf_local_got_offsets (abfd) != NULL)
c8a1f254 6954 {
5446cbdf
AM
6955 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6956 struct plt_entry **local_plt = (struct plt_entry **)
6957 (local_got_offsets + symtab_hdr->sh_info);
6958 plist = local_plt + ELF32_R_SYM (irel->r_info);
c8a1f254 6959 }
5446cbdf 6960 if (plist != NULL)
a9585d22 6961 {
5446cbdf
AM
6962 bfd_vma addend = 0;
6963 struct plt_entry *ent;
6964
6965 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6966 addend = irel->r_addend;
6967 ent = find_plt_ent (plist, got2, addend);
6968 if (ent != NULL)
a9585d22 6969 {
5446cbdf
AM
6970 if (htab->plt_type == PLT_NEW
6971 || h == NULL
6972 || !htab->elf.dynamic_sections_created
6973 || h->dynindx == -1)
6974 {
6975 tsec = htab->glink;
6976 toff = ent->glink_offset;
6977 }
6978 else
6979 {
6980 tsec = htab->plt;
6981 toff = ent->plt.offset;
6982 }
de972ffa
AM
6983 }
6984 }
de972ffa 6985
5446cbdf
AM
6986 /* If the branch and target are in the same section, you have
6987 no hope of adding stubs. We'll error out later should the
6988 branch overflow. */
6989 if (tsec == isec)
6990 continue;
25dbc73a 6991
5446cbdf
AM
6992 /* There probably isn't any reason to handle symbols in
6993 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6994 attribute for a code section, and we are only looking at
6995 branches. However, implement it correctly here as a
6996 reference for other target relax_section functions. */
6997 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
6998 {
6999 /* At this stage in linking, no SEC_MERGE symbol has been
7000 adjusted, so all references to such symbols need to be
7001 passed through _bfd_merged_section_offset. (Later, in
7002 relocate_section, all SEC_MERGE symbols *except* for
7003 section symbols have been adjusted.)
7004
7005 gas may reduce relocations against symbols in SEC_MERGE
7006 sections to a relocation against the section symbol when
7007 the original addend was zero. When the reloc is against
7008 a section symbol we should include the addend in the
7009 offset passed to _bfd_merged_section_offset, since the
7010 location of interest is the original symbol. On the
7011 other hand, an access to "sym+addend" where "sym" is not
7012 a section symbol should not include the addend; Such an
7013 access is presumed to be an offset from "sym"; The
7014 location of interest is just "sym". */
7015 if (sym_type == STT_SECTION)
7016 toff += irel->r_addend;
7017
7018 toff
7019 = _bfd_merged_section_offset (abfd, &tsec,
7020 elf_section_data (tsec)->sec_info,
7021 toff);
7022
7023 if (sym_type != STT_SECTION)
7024 toff += irel->r_addend;
7025 }
7026 /* PLTREL24 addends are special. */
7027 else if (r_type != R_PPC_PLTREL24)
25dbc73a 7028 toff += irel->r_addend;
7619e7c7 7029
5446cbdf
AM
7030 /* Attempted -shared link of non-pic code loses. */
7031 if ((!link_info->relocatable
7032 && tsec == bfd_und_section_ptr)
7033 || tsec->output_section == NULL
7034 || (tsec->owner != NULL
7035 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7036 continue;
7619e7c7 7037
5446cbdf 7038 roff = irel->r_offset;
7de713b9 7039
5446cbdf
AM
7040 /* If the branch is in range, no need to do anything. */
7041 if (tsec != bfd_und_section_ptr
7042 && (!link_info->relocatable
7043 /* A relocatable link may have sections moved during
7044 final link, so do not presume they remain in range. */
7045 || tsec->output_section == isec->output_section))
7046 {
7047 bfd_vma symaddr, reladdr;
7619e7c7 7048
5446cbdf
AM
7049 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7050 reladdr = isec->output_section->vma + isec->output_offset + roff;
7051 if (symaddr - reladdr + max_branch_offset
7052 < 2 * max_branch_offset)
7053 continue;
7054 }
01017ef8 7055
5446cbdf
AM
7056 /* Look for an existing fixup to this address. */
7057 for (f = fixups; f ; f = f->next)
7058 if (f->tsec == tsec && f->toff == toff)
7059 break;
252b5132 7060
5446cbdf
AM
7061 if (f == NULL)
7062 {
7063 size_t size;
7064 unsigned long stub_rtype;
25dbc73a 7065
5446cbdf
AM
7066 val = trampoff - roff;
7067 if (val >= max_branch_offset)
7068 /* Oh dear, we can't reach a trampoline. Don't try to add
7069 one. We'll report an error later. */
7070 continue;
252b5132 7071
5446cbdf
AM
7072 if (link_info->shared)
7073 {
7074 size = 4 * ARRAY_SIZE (shared_stub_entry);
7075 insn_offset = 12;
7076 }
7077 else
7078 {
7079 size = 4 * ARRAY_SIZE (stub_entry);
7080 insn_offset = 0;
7081 }
7082 stub_rtype = R_PPC_RELAX;
7083 if (tsec == htab->plt
7084 || tsec == htab->glink)
7085 {
7086 stub_rtype = R_PPC_RELAX_PLT;
7087 if (r_type == R_PPC_PLTREL24)
7088 stub_rtype = R_PPC_RELAX_PLTREL24;
7089 }
252b5132 7090
5446cbdf
AM
7091 /* Hijack the old relocation. Since we need two
7092 relocations for this use a "composite" reloc. */
7093 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7094 stub_rtype);
7095 irel->r_offset = trampoff + insn_offset;
7096 if (r_type == R_PPC_PLTREL24
7097 && stub_rtype != R_PPC_RELAX_PLTREL24)
7098 irel->r_addend = 0;
7099
7100 /* Record the fixup so we don't do it again this section. */
7101 f = bfd_malloc (sizeof (*f));
7102 f->next = fixups;
7103 f->tsec = tsec;
7104 f->toff = toff;
7105 f->trampoff = trampoff;
7106 fixups = f;
7107
7108 trampoff += size;
7109 changes++;
25dbc73a
AM
7110 }
7111 else
7112 {
5446cbdf
AM
7113 val = f->trampoff - roff;
7114 if (val >= max_branch_offset)
7115 continue;
252b5132 7116
5446cbdf
AM
7117 /* Nop out the reloc, since we're finalizing things here. */
7118 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7119 }
252b5132 7120
5446cbdf
AM
7121 /* Get the section contents. */
7122 if (contents == NULL)
25dbc73a 7123 {
5446cbdf
AM
7124 /* Get cached copy if it exists. */
7125 if (elf_section_data (isec)->this_hdr.contents != NULL)
7126 contents = elf_section_data (isec)->this_hdr.contents;
25dbc73a 7127 /* Go get them off disk. */
5446cbdf 7128 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
25dbc73a
AM
7129 goto error_return;
7130 }
252b5132 7131
5446cbdf
AM
7132 /* Fix up the existing branch to hit the trampoline. */
7133 hit_addr = contents + roff;
7134 switch (r_type)
7135 {
7136 case R_PPC_REL24:
7137 case R_PPC_LOCAL24PC:
7138 case R_PPC_PLTREL24:
7139 t0 = bfd_get_32 (abfd, hit_addr);
7140 t0 &= ~0x3fffffc;
7141 t0 |= val & 0x3fffffc;
7142 bfd_put_32 (abfd, t0, hit_addr);
7143 break;
252b5132 7144
5446cbdf
AM
7145 case R_PPC_REL14:
7146 case R_PPC_REL14_BRTAKEN:
7147 case R_PPC_REL14_BRNTAKEN:
7148 t0 = bfd_get_32 (abfd, hit_addr);
7149 t0 &= ~0xfffc;
7150 t0 |= val & 0xfffc;
7151 bfd_put_32 (abfd, t0, hit_addr);
7152 break;
7153 }
25dbc73a 7154 }
252b5132 7155
5446cbdf 7156 while (fixups != NULL)
25dbc73a
AM
7157 {
7158 struct one_fixup *f = fixups;
7159 fixups = fixups->next;
7160 free (f);
7161 }
5446cbdf 7162 }
252b5132 7163
5446cbdf
AM
7164 workaround_change = FALSE;
7165 newsize = trampoff;
795bc6b3
AM
7166 if (htab->params->ppc476_workaround
7167 && (!link_info->relocatable
7168 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
5446cbdf
AM
7169 {
7170 bfd_vma addr, end_addr;
7171 unsigned int crossings;
795bc6b3 7172 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf
AM
7173
7174 addr = isec->output_section->vma + isec->output_offset;
6128f9cf 7175 end_addr = addr + trampoff;
5446cbdf 7176 addr &= -pagesize;
795bc6b3 7177 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
5446cbdf
AM
7178 if (crossings != 0)
7179 {
7180 /* Keep space aligned, to ensure the patch code itself does
7181 not cross a page. Don't decrease size calculated on a
7182 previous pass as otherwise we might never settle on a layout. */
1e269e9b 7183 newsize = 15 - ((end_addr - 1) & 15);
5446cbdf
AM
7184 newsize += crossings * 16;
7185 if (relax_info->workaround_size < newsize)
7186 {
7187 relax_info->workaround_size = newsize;
7188 workaround_change = TRUE;
5446cbdf
AM
7189 }
7190 /* Ensure relocate_section is called. */
7191 isec->flags |= SEC_RELOC;
7192 }
7193 newsize = trampoff + relax_info->workaround_size;
7194 }
7195
5446cbdf
AM
7196 if (changes || workaround_change)
7197 isec->size = newsize;
7198
25dbc73a
AM
7199 if (isymbuf != NULL
7200 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 7201 {
25dbc73a
AM
7202 if (! link_info->keep_memory)
7203 free (isymbuf);
252b5132 7204 else
25dbc73a
AM
7205 {
7206 /* Cache the symbols for elf_link_input_bfd. */
7207 symtab_hdr->contents = (unsigned char *) isymbuf;
7208 }
252b5132
RH
7209 }
7210
25dbc73a
AM
7211 if (contents != NULL
7212 && elf_section_data (isec)->this_hdr.contents != contents)
7213 {
53291d1f 7214 if (!changes && !link_info->keep_memory)
25dbc73a
AM
7215 free (contents);
7216 else
7217 {
7218 /* Cache the section contents for elf_link_input_bfd. */
7219 elf_section_data (isec)->this_hdr.contents = contents;
7220 }
7221 }
252b5132 7222
9bc4e62b 7223 if (changes != 0)
25dbc73a 7224 {
9bc4e62b
NS
7225 /* Append sufficient NOP relocs so we can write out relocation
7226 information for the trampolines. */
d4730f92 7227 Elf_Internal_Shdr *rel_hdr;
9bc4e62b
NS
7228 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7229 * sizeof (*new_relocs));
7230 unsigned ix;
5b914448 7231
9bc4e62b
NS
7232 if (!new_relocs)
7233 goto error_return;
7234 memcpy (new_relocs, internal_relocs,
7235 isec->reloc_count * sizeof (*new_relocs));
7236 for (ix = changes; ix--;)
7237 {
7238 irel = new_relocs + ix + isec->reloc_count;
7239
7240 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7241 }
7242 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 7243 free (internal_relocs);
9bc4e62b
NS
7244 elf_section_data (isec)->relocs = new_relocs;
7245 isec->reloc_count += changes;
d4730f92
BS
7246 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7247 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
25dbc73a 7248 }
5446cbdf
AM
7249 else if (internal_relocs != NULL
7250 && elf_section_data (isec)->relocs != internal_relocs)
9bc4e62b 7251 free (internal_relocs);
252b5132 7252
5446cbdf 7253 *again = changes != 0 || workaround_change;
b34976b6 7254 return TRUE;
25dbc73a
AM
7255
7256 error_return:
5446cbdf
AM
7257 while (fixups != NULL)
7258 {
7259 struct one_fixup *f = fixups;
7260 fixups = fixups->next;
7261 free (f);
7262 }
25dbc73a
AM
7263 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7264 free (isymbuf);
7265 if (contents != NULL
7266 && elf_section_data (isec)->this_hdr.contents != contents)
7267 free (contents);
7268 if (internal_relocs != NULL
7269 && elf_section_data (isec)->relocs != internal_relocs)
7270 free (internal_relocs);
7271 return FALSE;
252b5132 7272}
252b5132 7273\f
8a696751
AM
7274/* What to do when ld finds relocations against symbols defined in
7275 discarded sections. */
7276
7277static unsigned int
7278ppc_elf_action_discarded (asection *sec)
7279{
7280 if (strcmp (".fixup", sec->name) == 0)
7281 return 0;
7282
7283 if (strcmp (".got2", sec->name) == 0)
7284 return 0;
7285
7286 return _bfd_elf_default_action_discarded (sec);
7287}
c9a2f333 7288\f
25dbc73a 7289/* Fill in the address for a pointer generated in a linker section. */
252b5132 7290
25dbc73a 7291static bfd_vma
76750a2f 7292elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
7293 elf_linker_section_t *lsect,
7294 struct elf_link_hash_entry *h,
7295 bfd_vma relocation,
2bb04cf2 7296 const Elf_Internal_Rela *rel)
25dbc73a
AM
7297{
7298 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 7299
25dbc73a 7300 BFD_ASSERT (lsect != NULL);
252b5132 7301
25dbc73a 7302 if (h != NULL)
252b5132 7303 {
25dbc73a
AM
7304 /* Handle global symbol. */
7305 struct ppc_elf_link_hash_entry *eh;
252b5132 7306
25dbc73a 7307 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
7308 BFD_ASSERT (eh->elf.def_regular);
7309 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
7310 }
7311 else
7312 {
7313 /* Handle local symbol. */
7314 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 7315
0c8d6e5c 7316 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 7317 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
7318 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7319 }
252b5132 7320
76750a2f
AM
7321 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7322 rel->r_addend,
7323 lsect);
7324 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 7325
76750a2f
AM
7326 /* Offset will always be a multiple of four, so use the bottom bit
7327 as a "written" flag. */
7328 if ((linker_section_ptr->offset & 1) == 0)
7329 {
7330 bfd_put_32 (lsect->section->owner,
7331 relocation + linker_section_ptr->addend,
7332 lsect->section->contents + linker_section_ptr->offset);
7333 linker_section_ptr->offset += 1;
252b5132
RH
7334 }
7335
bd6c6e2b
AM
7336 relocation = (lsect->section->output_section->vma
7337 + lsect->section->output_offset
76750a2f 7338 + linker_section_ptr->offset - 1
bd6c6e2b 7339 - SYM_VAL (lsect->sym));
252b5132 7340
25dbc73a
AM
7341#ifdef DEBUG
7342 fprintf (stderr,
7343 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7344 lsect->name, (long) relocation, (long) relocation);
7345#endif
252b5132 7346
bd6c6e2b 7347 return relocation;
252b5132 7348}
25dbc73a 7349
e054468f
AM
7350#define PPC_LO(v) ((v) & 0xffff)
7351#define PPC_HI(v) (((v) >> 16) & 0xffff)
7352#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7353
7354static void
a7f2871e 7355write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
e054468f
AM
7356 struct bfd_link_info *info)
7357{
7358 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7359 bfd *output_bfd = info->output_bfd;
7360 bfd_vma plt;
e054468f
AM
7361
7362 plt = ((ent->plt.offset & ~1)
7363 + plt_sec->output_section->vma
7364 + plt_sec->output_offset);
e054468f 7365
a877a2b6 7366 if (info->shared)
e054468f
AM
7367 {
7368 bfd_vma got = 0;
7369
7370 if (ent->addend >= 32768)
7371 got = (ent->addend
7372 + ent->sec->output_section->vma
7373 + ent->sec->output_offset);
7374 else if (htab->elf.hgot != NULL)
7375 got = SYM_VAL (htab->elf.hgot);
7376
7377 plt -= got;
7378
7379 if (plt + 0x8000 < 0x10000)
7380 {
7381 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7382 p += 4;
7383 bfd_put_32 (output_bfd, MTCTR_11, p);
7384 p += 4;
7385 bfd_put_32 (output_bfd, BCTR, p);
7386 p += 4;
da3a2088 7387 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
e054468f
AM
7388 p += 4;
7389 }
7390 else
7391 {
7392 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7393 p += 4;
7394 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7395 p += 4;
7396 bfd_put_32 (output_bfd, MTCTR_11, p);
7397 p += 4;
7398 bfd_put_32 (output_bfd, BCTR, p);
7399 p += 4;
7400 }
7401 }
7402 else
7403 {
7404 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7405 p += 4;
7406 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7407 p += 4;
7408 bfd_put_32 (output_bfd, MTCTR_11, p);
7409 p += 4;
7410 bfd_put_32 (output_bfd, BCTR, p);
7411 p += 4;
7412 }
7413}
7414
bd6c6e2b
AM
7415/* Return true if symbol is defined statically. */
7416
7417static bfd_boolean
7418is_static_defined (struct elf_link_hash_entry *h)
7419{
7420 return ((h->root.type == bfd_link_hash_defined
7421 || h->root.type == bfd_link_hash_defweak)
7422 && h->root.u.def.section != NULL
7423 && h->root.u.def.section->output_section != NULL);
7424}
7425
2d0f3896
AM
7426/* If INSN is an opcode that may be used with an @tls operand, return
7427 the transformed insn for TLS optimisation, otherwise return 0. If
7428 REG is non-zero only match an insn with RB or RA equal to REG. */
7429
7430unsigned int
7431_bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7432{
7433 unsigned int rtra;
7434
7435 if ((insn & (0x3f << 26)) != 31 << 26)
7436 return 0;
7437
7438 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7439 rtra = insn & ((1 << 26) - (1 << 16));
7440 else if (((insn >> 16) & 0x1f) == reg)
7441 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7442 else
7443 return 0;
7444
7445 if ((insn & (0x3ff << 1)) == 266 << 1)
7446 /* add -> addi. */
7447 insn = 14 << 26;
7448 else if ((insn & (0x1f << 1)) == 23 << 1
7449 && ((insn & (0x1f << 6)) < 14 << 6
7450 || ((insn & (0x1f << 6)) >= 16 << 6
7451 && (insn & (0x1f << 6)) < 24 << 6)))
7452 /* load and store indexed -> dform. */
7453 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7454 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7455 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7456 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7457 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7458 /* lwax -> lwa. */
7459 insn = (58 << 26) | 2;
7460 else
7461 return 0;
7462 insn |= rtra;
7463 return insn;
7464}
7465
766bc656
AM
7466/* If INSN is an opcode that may be used with an @tprel operand, return
7467 the transformed insn for an undefined weak symbol, ie. with the
7468 thread pointer REG operand removed. Otherwise return 0. */
7469
7470unsigned int
7471_bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7472{
7473 if ((insn & (0x1f << 16)) == reg << 16
7474 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7475 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7476 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7477 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7478 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7479 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7480 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7481 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7482 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7483 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7484 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7485 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7486 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7487 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7488 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7489 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7490 && (insn & 3) != 1)
7491 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7492 && ((insn & 3) == 0 || (insn & 3) == 3))))
7493 {
7494 insn &= ~(0x1f << 16);
7495 }
7496 else if ((insn & (0x1f << 21)) == reg << 21
7497 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7498 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7499 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7500 {
7501 insn &= ~(0x1f << 21);
7502 insn |= (insn & (0x1f << 16)) << 5;
7503 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7504 insn -= 2 >> 26; /* convert to ori,oris */
7505 }
7506 else
7507 insn = 0;
7508 return insn;
7509}
7510
1fe532cf
AM
7511static bfd_boolean
7512is_insn_ds_form (unsigned int insn)
7513{
7514 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7515 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7516 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7517 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7518}
7519
7520static bfd_boolean
7521is_insn_dq_form (unsigned int insn)
7522{
7523 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7524}
7525
252b5132
RH
7526/* The RELOCATE_SECTION function is called by the ELF backend linker
7527 to handle the relocations for a section.
7528
7529 The relocs are always passed as Rela structures; if the section
7530 actually uses Rel structures, the r_addend field will always be
7531 zero.
7532
7533 This function is responsible for adjust the section contents as
7534 necessary, and (if using Rela relocs and generating a
1049f94e 7535 relocatable output file) adjusting the reloc addend as
252b5132
RH
7536 necessary.
7537
7538 This function does not have to worry about setting the reloc
7539 address or the reloc symbol index.
7540
7541 LOCAL_SYMS is a pointer to the swapped in local symbols.
7542
7543 LOCAL_SECTIONS is an array giving the section in the input file
7544 corresponding to the st_shndx field of each local symbol.
7545
7546 The global hash table entry for the global symbols can be found
7547 via elf_sym_hashes (input_bfd).
7548
1049f94e 7549 When generating relocatable output, this function must handle
252b5132
RH
7550 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7551 going to be the section symbol corresponding to the output
7552 section, which means that the addend must be adjusted
7553 accordingly. */
7554
b34976b6 7555static bfd_boolean
55fd94b0
AM
7556ppc_elf_relocate_section (bfd *output_bfd,
7557 struct bfd_link_info *info,
7558 bfd *input_bfd,
7559 asection *input_section,
7560 bfd_byte *contents,
7561 Elf_Internal_Rela *relocs,
7562 Elf_Internal_Sym *local_syms,
7563 asection **local_sections)
252b5132 7564{
7619e7c7
AM
7565 Elf_Internal_Shdr *symtab_hdr;
7566 struct elf_link_hash_entry **sym_hashes;
7567 struct ppc_elf_link_hash_table *htab;
7568 Elf_Internal_Rela *rel;
7569 Elf_Internal_Rela *relend;
7570 Elf_Internal_Rela outrel;
f95f8542 7571 asection *got2;
252b5132 7572 bfd_vma *local_got_offsets;
b34976b6 7573 bfd_boolean ret = TRUE;
4fe5ca5b 7574 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 7575 bfd_boolean is_vxworks_tls;
b34976b6 7576
252b5132 7577#ifdef DEBUG
d003868e
AM
7578 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7579 "%ld relocations%s",
7580 input_bfd, input_section,
7581 (long) input_section->reloc_count,
7582 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH
7583#endif
7584
a6aa5195
AM
7585 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7586
e47cd125 7587 /* Initialize howto table if not already done. */
8da6118f 7588 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
7589 ppc_elf_howto_init ();
7590
7619e7c7 7591 htab = ppc_elf_hash_table (info);
252b5132 7592 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 7593 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 7594 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
7595 /* We have to handle relocations in vxworks .tls_vars sections
7596 specially, because the dynamic loader is 'weird'. */
7597 is_vxworks_tls = (htab->is_vxworks && info->shared
7598 && !strcmp (input_section->output_section->name,
7599 ".tls_vars"));
7619e7c7
AM
7600 rel = relocs;
7601 relend = relocs + input_section->reloc_count;
252b5132
RH
7602 for (; rel < relend; rel++)
7603 {
7619e7c7
AM
7604 enum elf_ppc_reloc_type r_type;
7605 bfd_vma addend;
7606 bfd_reloc_status_type r;
7607 Elf_Internal_Sym *sym;
7608 asection *sec;
7609 struct elf_link_hash_entry *h;
7610 const char *sym_name;
252b5132
RH
7611 reloc_howto_type *howto;
7612 unsigned long r_symndx;
7613 bfd_vma relocation;
91d6fa6a 7614 bfd_vma branch_bit, from;
7619e7c7
AM
7615 bfd_boolean unresolved_reloc;
7616 bfd_boolean warned;
7617 unsigned int tls_type, tls_mask, tls_gd;
e054468f 7618 struct plt_entry **ifunc;
86c95733 7619 struct reloc_howto_struct alt_howto;
7619e7c7 7620
55fd94b0
AM
7621 r_type = ELF32_R_TYPE (rel->r_info);
7622 sym = NULL;
7623 sec = NULL;
7624 h = NULL;
7619e7c7
AM
7625 unresolved_reloc = FALSE;
7626 warned = FALSE;
252b5132 7627 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 7628
252b5132
RH
7629 if (r_symndx < symtab_hdr->sh_info)
7630 {
7631 sym = local_syms + r_symndx;
7632 sec = local_sections[r_symndx];
26c61ae5 7633 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 7634
8517fae7 7635 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
7636 }
7637 else
7638 {
62d887d4
L
7639 bfd_boolean ignored;
7640
b2a8e766
AM
7641 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7642 r_symndx, symtab_hdr, sym_hashes,
7643 h, sec, relocation,
62d887d4 7644 unresolved_reloc, warned, ignored);
9abc968f 7645
252b5132 7646 sym_name = h->root.root.string;
7619e7c7
AM
7647 }
7648
dbaa2011 7649 if (sec != NULL && discarded_section (sec))
ab96bf03
AM
7650 {
7651 /* For relocs against symbols from removed linkonce sections,
7652 or sections discarded by a linker script, we just want the
7653 section contents zeroed. Avoid any special processing. */
7654 howto = NULL;
7655 if (r_type < R_PPC_max)
7656 howto = ppc_elf_howto_table[r_type];
e4067dbb 7657 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 7658 rel, 1, relend, howto, 0, contents);
ab96bf03
AM
7659 }
7660
7661 if (info->relocatable)
7662 {
7663 if (got2 != NULL
7664 && r_type == R_PPC_PLTREL24
f75e0e33 7665 && rel->r_addend != 0)
ab96bf03
AM
7666 {
7667 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7668 addend specifies the GOT pointer offset within .got2. */
7669 rel->r_addend += got2->output_offset;
7670 }
53291d1f
AM
7671 if (r_type != R_PPC_RELAX_PLT
7672 && r_type != R_PPC_RELAX_PLTREL24
7673 && r_type != R_PPC_RELAX)
7674 continue;
ab96bf03
AM
7675 }
7676
7619e7c7
AM
7677 /* TLS optimizations. Replace instruction sequences and relocs
7678 based on information we collected in tls_optimize. We edit
7679 RELOCS so that --emit-relocs will output something sensible
7680 for the final instruction stream. */
7681 tls_mask = 0;
7682 tls_gd = 0;
727fc41e
AM
7683 if (h != NULL)
7684 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7685 else if (local_got_offsets != NULL)
7619e7c7 7686 {
e054468f 7687 struct plt_entry **local_plt;
727fc41e 7688 char *lgot_masks;
e054468f
AM
7689 local_plt
7690 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7691 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
727fc41e 7692 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM
7693 }
7694
7695 /* Ensure reloc mapping code below stays sane. */
7696 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7697 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7698 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7699 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7700 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7701 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7702 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7703 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7704 abort ();
7705 switch (r_type)
7706 {
7707 default:
7708 break;
7709
7710 case R_PPC_GOT_TPREL16:
7711 case R_PPC_GOT_TPREL16_LO:
e054468f 7712 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7713 && (tls_mask & TLS_TPREL) == 0)
7714 {
7715 bfd_vma insn;
91d6fa6a 7716
4fe5ca5b 7717 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7619e7c7
AM
7718 insn &= 31 << 21;
7719 insn |= 0x3c020000; /* addis 0,2,0 */
4fe5ca5b 7720 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7619e7c7
AM
7721 r_type = R_PPC_TPREL16_HA;
7722 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7723 }
7724 break;
7725
7726 case R_PPC_TLS:
e054468f 7727 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7728 && (tls_mask & TLS_TPREL) == 0)
7729 {
2d0f3896
AM
7730 bfd_vma insn;
7731
7619e7c7 7732 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM
7733 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7734 if (insn == 0)
7619e7c7 7735 abort ();
7619e7c7
AM
7736 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7737 r_type = R_PPC_TPREL16_LO;
7738 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 7739
7619e7c7 7740 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
7741 PPC_TPREL16_LO which is at low-order half-word. */
7742 rel->r_offset += d_offset;
7619e7c7
AM
7743 }
7744 break;
7745
7746 case R_PPC_GOT_TLSGD16_HI:
7747 case R_PPC_GOT_TLSGD16_HA:
7748 tls_gd = TLS_TPRELGD;
e054468f 7749 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7619e7c7
AM
7750 goto tls_gdld_hi;
7751 break;
7752
7753 case R_PPC_GOT_TLSLD16_HI:
7754 case R_PPC_GOT_TLSLD16_HA:
e054468f 7755 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7
AM
7756 {
7757 tls_gdld_hi:
7758 if ((tls_mask & tls_gd) != 0)
7759 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7760 + R_PPC_GOT_TPREL16);
7761 else
7762 {
7763 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 7764 rel->r_offset -= d_offset;
7619e7c7
AM
7765 r_type = R_PPC_NONE;
7766 }
7767 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7768 }
7769 break;
7770
7771 case R_PPC_GOT_TLSGD16:
7772 case R_PPC_GOT_TLSGD16_LO:
7773 tls_gd = TLS_TPRELGD;
e054468f 7774 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 7775 goto tls_ldgd_opt;
7619e7c7
AM
7776 break;
7777
7778 case R_PPC_GOT_TLSLD16:
7779 case R_PPC_GOT_TLSLD16_LO:
e054468f 7780 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7 7781 {
3a71aa26 7782 unsigned int insn1, insn2;
b7fcf6f6 7783 bfd_vma offset;
7619e7c7 7784
b7fcf6f6 7785 tls_ldgd_opt:
727fc41e
AM
7786 offset = (bfd_vma) -1;
7787 /* If not using the newer R_PPC_TLSGD/LD to mark
7788 __tls_get_addr calls, we must trust that the call
7789 stays with its arg setup insns, ie. that the next
7790 reloc is the __tls_get_addr call associated with
7791 the current reloc. Edit both insns. */
7792 if (input_section->has_tls_get_addr_call
7793 && rel + 1 < relend
7794 && branch_reloc_hash_match (input_bfd, rel + 1,
7795 htab->tls_get_addr))
7796 offset = rel[1].r_offset;
b7fcf6f6
AM
7797 if ((tls_mask & tls_gd) != 0)
7798 {
7799 /* IE */
3a71aa26
AM
7800 insn1 = bfd_get_32 (output_bfd,
7801 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
7802 insn1 &= (1 << 26) - 1;
7803 insn1 |= 32 << 26; /* lwz */
727fc41e
AM
7804 if (offset != (bfd_vma) -1)
7805 {
f58d5a2d 7806 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
7807 insn2 = 0x7c631214; /* add 3,3,2 */
7808 bfd_put_32 (output_bfd, insn2, contents + offset);
7809 }
b7fcf6f6
AM
7810 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7811 + R_PPC_GOT_TPREL16);
7812 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7813 }
7814 else
7815 {
7816 /* LE */
7817 insn1 = 0x3c620000; /* addis 3,2,0 */
7619e7c7
AM
7818 if (tls_gd == 0)
7819 {
b7fcf6f6 7820 /* Was an LD reloc. */
1d483afe
AM
7821 for (r_symndx = 0;
7822 r_symndx < symtab_hdr->sh_info;
7823 r_symndx++)
7824 if (local_sections[r_symndx] == sec)
7825 break;
7826 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 7827 r_symndx = STN_UNDEF;
b7fcf6f6 7828 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 7829 if (r_symndx != STN_UNDEF)
1d483afe
AM
7830 rel->r_addend -= (local_syms[r_symndx].st_value
7831 + sec->output_offset
7832 + sec->output_section->vma);
7619e7c7 7833 }
b7fcf6f6
AM
7834 r_type = R_PPC_TPREL16_HA;
7835 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM
7836 if (offset != (bfd_vma) -1)
7837 {
7838 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7839 rel[1].r_offset = offset + d_offset;
7840 rel[1].r_addend = rel->r_addend;
7841 insn2 = 0x38630000; /* addi 3,3,0 */
7842 bfd_put_32 (output_bfd, insn2, contents + offset);
7843 }
b7fcf6f6
AM
7844 }
7845 bfd_put_32 (output_bfd, insn1,
7846 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
7847 if (tls_gd == 0)
7848 {
7849 /* We changed the symbol on an LD reloc. Start over
7850 in order to get h, sym, sec etc. right. */
7851 rel--;
7852 continue;
7619e7c7 7853 }
252b5132 7854 }
7619e7c7 7855 break;
727fc41e
AM
7856
7857 case R_PPC_TLSGD:
e054468f 7858 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
727fc41e
AM
7859 {
7860 unsigned int insn2;
7861 bfd_vma offset = rel->r_offset;
7862
7863 if ((tls_mask & TLS_TPRELGD) != 0)
7864 {
7865 /* IE */
7866 r_type = R_PPC_NONE;
7867 insn2 = 0x7c631214; /* add 3,3,2 */
7868 }
7869 else
7870 {
7871 /* LE */
7872 r_type = R_PPC_TPREL16_LO;
7873 rel->r_offset += d_offset;
7874 insn2 = 0x38630000; /* addi 3,3,0 */
7875 }
7876 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7877 bfd_put_32 (output_bfd, insn2, contents + offset);
7878 /* Zap the reloc on the _tls_get_addr call too. */
7879 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 7880 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
7881 }
7882 break;
7883
7884 case R_PPC_TLSLD:
e054468f 7885 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
727fc41e
AM
7886 {
7887 unsigned int insn2;
7888
7889 for (r_symndx = 0;
7890 r_symndx < symtab_hdr->sh_info;
7891 r_symndx++)
7892 if (local_sections[r_symndx] == sec)
7893 break;
7894 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 7895 r_symndx = STN_UNDEF;
727fc41e 7896 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 7897 if (r_symndx != STN_UNDEF)
727fc41e
AM
7898 rel->r_addend -= (local_syms[r_symndx].st_value
7899 + sec->output_offset
7900 + sec->output_section->vma);
7901
7902 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7903 rel->r_offset += d_offset;
7904 insn2 = 0x38630000; /* addi 3,3,0 */
7905 bfd_put_32 (output_bfd, insn2,
7906 contents + rel->r_offset - d_offset);
7907 /* Zap the reloc on the _tls_get_addr call too. */
7908 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
f58d5a2d 7909 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
7910 rel--;
7911 continue;
7912 }
7913 break;
7619e7c7
AM
7914 }
7915
7916 /* Handle other relocations that tweak non-addend part of insn. */
7917 branch_bit = 0;
7918 switch (r_type)
7919 {
7920 default:
7921 break;
7922
7923 /* Branch taken prediction relocations. */
7924 case R_PPC_ADDR14_BRTAKEN:
7925 case R_PPC_REL14_BRTAKEN:
7926 branch_bit = BRANCH_PREDICT_BIT;
7927 /* Fall thru */
7928
4cc11e76 7929 /* Branch not taken prediction relocations. */
7619e7c7
AM
7930 case R_PPC_ADDR14_BRNTAKEN:
7931 case R_PPC_REL14_BRNTAKEN:
91d6fa6a
NC
7932 {
7933 bfd_vma insn;
7619e7c7 7934
91d6fa6a
NC
7935 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7936 insn &= ~BRANCH_PREDICT_BIT;
7937 insn |= branch_bit;
7619e7c7 7938
91d6fa6a
NC
7939 from = (rel->r_offset
7940 + input_section->output_offset
7941 + input_section->output_section->vma);
7619e7c7 7942
91d6fa6a
NC
7943 /* Invert 'y' bit if not the default. */
7944 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7945 insn ^= BRANCH_PREDICT_BIT;
7946
7947 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7948 break;
7949 }
252b5132
RH
7950 }
7951
e054468f 7952 ifunc = NULL;
25f23106 7953 if (!htab->is_vxworks)
e054468f 7954 {
de972ffa
AM
7955 struct plt_entry *ent;
7956
e054468f
AM
7957 if (h != NULL)
7958 {
7959 if (h->type == STT_GNU_IFUNC)
7960 ifunc = &h->plt.plist;
7961 }
de972ffa
AM
7962 else if (local_got_offsets != NULL
7963 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
e054468f 7964 {
de972ffa 7965 struct plt_entry **local_plt;
e054468f 7966
de972ffa
AM
7967 local_plt = (struct plt_entry **) (local_got_offsets
7968 + symtab_hdr->sh_info);
7969 ifunc = local_plt + r_symndx;
e054468f 7970 }
e054468f 7971
de972ffa
AM
7972 ent = NULL;
7973 if (ifunc != NULL
7974 && (!info->shared
7975 || is_branch_reloc (r_type)))
7976 {
7977 addend = 0;
a877a2b6 7978 if (r_type == R_PPC_PLTREL24 && info->shared)
de972ffa
AM
7979 addend = rel->r_addend;
7980 ent = find_plt_ent (ifunc, got2, addend);
7981 }
7982 if (ent != NULL)
7983 {
e054468f
AM
7984 if (h == NULL && (ent->plt.offset & 1) == 0)
7985 {
7986 Elf_Internal_Rela rela;
7987 bfd_byte *loc;
7988
7989 rela.r_offset = (htab->iplt->output_section->vma
7990 + htab->iplt->output_offset
7991 + ent->plt.offset);
7992 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7993 rela.r_addend = relocation;
25f23106
AM
7994 loc = htab->reliplt->contents;
7995 loc += (htab->reliplt->reloc_count++
7996 * sizeof (Elf32_External_Rela));
e054468f
AM
7997 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7998
7999 ent->plt.offset |= 1;
8000 }
8001 if (h == NULL && (ent->glink_offset & 1) == 0)
8002 {
a7f2871e
AM
8003 unsigned char *p = ((unsigned char *) htab->glink->contents
8004 + ent->glink_offset);
8005 write_glink_stub (ent, htab->iplt, p, info);
e054468f
AM
8006 ent->glink_offset |= 1;
8007 }
8008
8009 unresolved_reloc = FALSE;
8010 if (htab->plt_type == PLT_NEW
8011 || !htab->elf.dynamic_sections_created
c7e17e05
AM
8012 || h == NULL
8013 || h->dynindx == -1)
e054468f
AM
8014 relocation = (htab->glink->output_section->vma
8015 + htab->glink->output_offset
8016 + (ent->glink_offset & ~1));
8017 else
8018 relocation = (htab->plt->output_section->vma
8019 + htab->plt->output_offset
8020 + ent->plt.offset);
8021 }
8022 }
8023
7619e7c7
AM
8024 addend = rel->r_addend;
8025 tls_type = 0;
8026 howto = NULL;
55fd94b0
AM
8027 if (r_type < R_PPC_max)
8028 howto = ppc_elf_howto_table[r_type];
7619e7c7 8029 switch (r_type)
252b5132
RH
8030 {
8031 default:
25f53a85 8032 info->callbacks->einfo
8de848d8 8033 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
d003868e 8034 input_bfd, (int) r_type, sym_name);
252b5132
RH
8035
8036 bfd_set_error (bfd_error_bad_value);
b34976b6 8037 ret = FALSE;
252b5132
RH
8038 continue;
8039
7619e7c7
AM
8040 case R_PPC_NONE:
8041 case R_PPC_TLS:
727fc41e
AM
8042 case R_PPC_TLSGD:
8043 case R_PPC_TLSLD:
7619e7c7
AM
8044 case R_PPC_EMB_MRKREF:
8045 case R_PPC_GNU_VTINHERIT:
8046 case R_PPC_GNU_VTENTRY:
7595d193
L
8047 continue;
8048
7619e7c7
AM
8049 /* GOT16 relocations. Like an ADDR16 using the symbol's
8050 address in the GOT as relocation value instead of the
8051 symbol's value itself. Also, create a GOT entry for the
8052 symbol and put the symbol value there. */
8053 case R_PPC_GOT_TLSGD16:
8054 case R_PPC_GOT_TLSGD16_LO:
8055 case R_PPC_GOT_TLSGD16_HI:
8056 case R_PPC_GOT_TLSGD16_HA:
8057 tls_type = TLS_TLS | TLS_GD;
8058 goto dogot;
8059
8060 case R_PPC_GOT_TLSLD16:
8061 case R_PPC_GOT_TLSLD16_LO:
8062 case R_PPC_GOT_TLSLD16_HI:
8063 case R_PPC_GOT_TLSLD16_HA:
8064 tls_type = TLS_TLS | TLS_LD;
8065 goto dogot;
8066
8067 case R_PPC_GOT_TPREL16:
8068 case R_PPC_GOT_TPREL16_LO:
8069 case R_PPC_GOT_TPREL16_HI:
8070 case R_PPC_GOT_TPREL16_HA:
8071 tls_type = TLS_TLS | TLS_TPREL;
8072 goto dogot;
8073
8074 case R_PPC_GOT_DTPREL16:
8075 case R_PPC_GOT_DTPREL16_LO:
8076 case R_PPC_GOT_DTPREL16_HI:
8077 case R_PPC_GOT_DTPREL16_HA:
8078 tls_type = TLS_TLS | TLS_DTPREL;
8079 goto dogot;
8080
8081 case R_PPC_GOT16:
8082 case R_PPC_GOT16_LO:
8083 case R_PPC_GOT16_HI:
8084 case R_PPC_GOT16_HA:
727fc41e 8085 tls_mask = 0;
7619e7c7
AM
8086 dogot:
8087 {
8088 /* Relocation is to the entry for this symbol in the global
8089 offset table. */
8090 bfd_vma off;
8091 bfd_vma *offp;
8092 unsigned long indx;
8093
8094 if (htab->got == NULL)
8095 abort ();
8096
8097 indx = 0;
8098 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 8099 && (h == NULL
f5385ebf 8100 || !h->def_dynamic))
7619e7c7
AM
8101 offp = &htab->tlsld_got.offset;
8102 else if (h != NULL)
8103 {
8104 bfd_boolean dyn;
8105 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 8106 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM
8107 || (info->shared
8108 && SYMBOL_REFERENCES_LOCAL (info, h)))
8109 /* This is actually a static link, or it is a
8110 -Bsymbolic link and the symbol is defined
8111 locally, or the symbol was forced to be local
8112 because of a version file. */
8113 ;
8114 else
8115 {
14acf4dc 8116 BFD_ASSERT (h->dynindx != -1);
7619e7c7
AM
8117 indx = h->dynindx;
8118 unresolved_reloc = FALSE;
8119 }
8120 offp = &h->got.offset;
8121 }
8122 else
8123 {
8124 if (local_got_offsets == NULL)
8125 abort ();
8126 offp = &local_got_offsets[r_symndx];
8127 }
8128
8129 /* The offset must always be a multiple of 4. We use the
8130 least significant bit to record whether we have already
8131 processed this entry. */
8132 off = *offp;
8133 if ((off & 1) != 0)
8134 off &= ~1;
8135 else
8136 {
70bccea4
AM
8137 unsigned int tls_m = (tls_mask
8138 & (TLS_LD | TLS_GD | TLS_DTPREL
8139 | TLS_TPREL | TLS_TPRELGD));
8140
8141 if (offp == &htab->tlsld_got.offset)
8142 tls_m = TLS_LD;
8143 else if (h == NULL
f5385ebf 8144 || !h->def_dynamic)
70bccea4
AM
8145 tls_m &= ~TLS_LD;
8146
8147 /* We might have multiple got entries for this sym.
8148 Initialize them all. */
8149 do
7619e7c7 8150 {
70bccea4
AM
8151 int tls_ty = 0;
8152
8153 if ((tls_m & TLS_LD) != 0)
7619e7c7 8154 {
70bccea4
AM
8155 tls_ty = TLS_TLS | TLS_LD;
8156 tls_m &= ~TLS_LD;
8157 }
8158 else if ((tls_m & TLS_GD) != 0)
8159 {
8160 tls_ty = TLS_TLS | TLS_GD;
8161 tls_m &= ~TLS_GD;
8162 }
8163 else if ((tls_m & TLS_DTPREL) != 0)
8164 {
8165 tls_ty = TLS_TLS | TLS_DTPREL;
8166 tls_m &= ~TLS_DTPREL;
8167 }
8168 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8169 {
8170 tls_ty = TLS_TLS | TLS_TPREL;
8171 tls_m = 0;
7619e7c7 8172 }
7619e7c7 8173
70bccea4 8174 /* Generate relocs for the dynamic linker. */
4e795f50 8175 if ((info->shared || indx != 0)
d6e14abc
AM
8176 && (offp == &htab->tlsld_got.offset
8177 || h == NULL
4e795f50
AM
8178 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8179 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 8180 {
91e21fb7 8181 asection *rsec = htab->relgot;
91d6fa6a 8182 bfd_byte * loc;
91e21fb7 8183
0bed072f
AM
8184 if (ifunc != NULL)
8185 rsec = htab->reliplt;
70bccea4
AM
8186 outrel.r_offset = (htab->got->output_section->vma
8187 + htab->got->output_offset
8188 + off);
e515b051 8189 outrel.r_addend = 0;
70bccea4
AM
8190 if (tls_ty & (TLS_LD | TLS_GD))
8191 {
8192 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
8193 if (tls_ty == (TLS_TLS | TLS_GD))
8194 {
25f23106
AM
8195 loc = rsec->contents;
8196 loc += (rsec->reloc_count++
70bccea4
AM
8197 * sizeof (Elf32_External_Rela));
8198 bfd_elf32_swap_reloca_out (output_bfd,
8199 &outrel, loc);
e515b051 8200 outrel.r_offset += 4;
70bccea4
AM
8201 outrel.r_info
8202 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
8203 }
8204 }
8205 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8206 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8207 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8208 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
25f23106 8209 else if (indx != 0)
70bccea4 8210 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
25f23106
AM
8211 else if (ifunc != NULL)
8212 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8213 else
8214 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
d6e14abc 8215 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM
8216 {
8217 outrel.r_addend += relocation;
8218 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 8219 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 8220 }
25f23106
AM
8221 loc = rsec->contents;
8222 loc += (rsec->reloc_count++
70bccea4
AM
8223 * sizeof (Elf32_External_Rela));
8224 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
8225 }
8226
70bccea4
AM
8227 /* Init the .got section contents if we're not
8228 emitting a reloc. */
8229 else
7619e7c7 8230 {
70bccea4
AM
8231 bfd_vma value = relocation;
8232
7b609f53
AM
8233 if (tls_ty == (TLS_TLS | TLS_LD))
8234 value = 1;
8235 else if (tls_ty != 0)
70bccea4 8236 {
e1918d23 8237 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 8238 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 8239 value += DTP_OFFSET - TP_OFFSET;
70bccea4 8240
7b609f53
AM
8241 if (tls_ty == (TLS_TLS | TLS_GD))
8242 {
8243 bfd_put_32 (output_bfd, value,
8244 htab->got->contents + off + 4);
8245 value = 1;
8246 }
70bccea4 8247 }
70bccea4
AM
8248 bfd_put_32 (output_bfd, value,
8249 htab->got->contents + off);
7619e7c7 8250 }
70bccea4
AM
8251
8252 off += 4;
8253 if (tls_ty & (TLS_LD | TLS_GD))
8254 off += 4;
7619e7c7 8255 }
70bccea4
AM
8256 while (tls_m != 0);
8257
8258 off = *offp;
8259 *offp = off | 1;
7619e7c7
AM
8260 }
8261
8262 if (off >= (bfd_vma) -2)
8263 abort ();
8264
70bccea4
AM
8265 if ((tls_type & TLS_TLS) != 0)
8266 {
8267 if (tls_type != (TLS_TLS | TLS_LD))
8268 {
8269 if ((tls_mask & TLS_LD) != 0
8270 && !(h == NULL
f5385ebf 8271 || !h->def_dynamic))
70bccea4
AM
8272 off += 8;
8273 if (tls_type != (TLS_TLS | TLS_GD))
8274 {
8275 if ((tls_mask & TLS_GD) != 0)
8276 off += 8;
8277 if (tls_type != (TLS_TLS | TLS_DTPREL))
8278 {
8279 if ((tls_mask & TLS_DTPREL) != 0)
8280 off += 4;
8281 }
8282 }
8283 }
8284 }
8285
e87d4038
AM
8286 relocation = (htab->got->output_section->vma
8287 + htab->got->output_offset
8288 + off
8289 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
8290
8291 /* Addends on got relocations don't make much sense.
8292 x+off@got is actually x@got+off, and since the got is
8293 generated by a hash table traversal, the value in the
8294 got at entry m+n bears little relation to the entry m. */
8295 if (addend != 0)
25f53a85 8296 info->callbacks->einfo
8de848d8 8297 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
25f53a85 8298 input_bfd, input_section, rel->r_offset,
7b609f53 8299 howto->name,
7619e7c7
AM
8300 sym_name);
8301 }
86c95733 8302 break;
7619e7c7 8303
86c95733 8304 /* Relocations that need no special processing. */
7619e7c7 8305 case R_PPC_LOCAL24PC:
252b5132
RH
8306 /* It makes no sense to point a local relocation
8307 at a symbol not in this object. */
7b609f53 8308 if (unresolved_reloc)
252b5132 8309 {
464e1740
ILT
8310 if (! (*info->callbacks->undefined_symbol) (info,
8311 h->root.root.string,
8312 input_bfd,
8313 input_section,
5cc7c785 8314 rel->r_offset,
b34976b6
AM
8315 TRUE))
8316 return FALSE;
252b5132
RH
8317 continue;
8318 }
8319 break;
8320
7619e7c7
AM
8321 case R_PPC_DTPREL16:
8322 case R_PPC_DTPREL16_LO:
8323 case R_PPC_DTPREL16_HI:
8324 case R_PPC_DTPREL16_HA:
e1918d23 8325 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8326 break;
8327
70bccea4
AM
8328 /* Relocations that may need to be propagated if this is a shared
8329 object. */
7619e7c7
AM
8330 case R_PPC_TPREL16:
8331 case R_PPC_TPREL16_LO:
8332 case R_PPC_TPREL16_HI:
8333 case R_PPC_TPREL16_HA:
766bc656
AM
8334 if (h != NULL
8335 && h->root.type == bfd_link_hash_undefweak
8336 && h->dynindx == -1)
8337 {
8338 /* Make this relocation against an undefined weak symbol
8339 resolve to zero. This is really just a tweak, since
8340 code using weak externs ought to check that they are
8341 defined before using them. */
8342 bfd_byte *p = contents + rel->r_offset - d_offset;
8343 unsigned int insn = bfd_get_32 (output_bfd, p);
8344 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8345 if (insn != 0)
8346 bfd_put_32 (output_bfd, insn, p);
8347 break;
8348 }
e1918d23 8349 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8350 /* The TPREL16 relocs shouldn't really be used in shared
8351 libs as they will result in DT_TEXTREL being set, but
8352 support them anyway. */
8353 goto dodyn;
8354
8355 case R_PPC_TPREL32:
e1918d23 8356 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8357 goto dodyn;
8358
8359 case R_PPC_DTPREL32:
e1918d23 8360 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8361 goto dodyn;
8362
e515b051
AM
8363 case R_PPC_DTPMOD32:
8364 relocation = 1;
8365 addend = 0;
8366 goto dodyn;
8367
d7128ce4
AM
8368 case R_PPC_REL16:
8369 case R_PPC_REL16_LO:
8370 case R_PPC_REL16_HI:
8371 case R_PPC_REL16_HA:
8372 break;
8373
7619e7c7 8374 case R_PPC_REL32:
625af618
AM
8375 if (h == NULL || h == htab->elf.hgot)
8376 break;
8377 /* fall through */
8378
8379 case R_PPC_ADDR32:
8380 case R_PPC_ADDR16:
8381 case R_PPC_ADDR16_LO:
8382 case R_PPC_ADDR16_HI:
8383 case R_PPC_ADDR16_HA:
8384 case R_PPC_UADDR32:
8385 case R_PPC_UADDR16:
8386 goto dodyn;
8387
b9c361e0
JL
8388 case R_PPC_VLE_REL8:
8389 case R_PPC_VLE_REL15:
8390 case R_PPC_VLE_REL24:
625af618 8391 case R_PPC_REL24:
7619e7c7
AM
8392 case R_PPC_REL14:
8393 case R_PPC_REL14_BRTAKEN:
8394 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
8395 /* If these relocations are not to a named symbol, they can be
8396 handled right here, no need to bother the dynamic linker. */
89200bf8 8397 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 8398 || h == htab->elf.hgot)
252b5132 8399 break;
70bccea4 8400 /* fall through */
252b5132 8401
7619e7c7 8402 case R_PPC_ADDR24:
7619e7c7
AM
8403 case R_PPC_ADDR14:
8404 case R_PPC_ADDR14_BRTAKEN:
8405 case R_PPC_ADDR14_BRNTAKEN:
625af618
AM
8406 if (h != NULL && !info->shared)
8407 break;
8408 /* fall through */
8409
7619e7c7 8410 dodyn:
3348747a
NS
8411 if ((input_section->flags & SEC_ALLOC) == 0
8412 || is_vxworks_tls)
c87b5a93 8413 break;
c87b5a93 8414
ee05f2fe 8415 if ((info->shared
89200bf8
AM
8416 && !(h != NULL
8417 && ((h->root.type == bfd_link_hash_undefined
8418 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8419 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8420 || (h->root.type == bfd_link_hash_undefweak
8421 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 8422 && (must_be_dyn_reloc (info, r_type)
f6c52c13 8423 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM
8424 || (ELIMINATE_COPY_RELOCS
8425 && !info->shared
ee05f2fe
AM
8426 && h != NULL
8427 && h->dynindx != -1
f5385ebf 8428 && !h->non_got_ref
de972ffa 8429 && !h->def_regular))
252b5132 8430 {
0bb2d96a 8431 int skip;
f95f8542
AM
8432 bfd_byte *loc;
8433 asection *sreloc;
252b5132 8434#ifdef DEBUG
55fd94b0
AM
8435 fprintf (stderr, "ppc_elf_relocate_section needs to "
8436 "create relocation for %s\n",
70bccea4
AM
8437 (h && h->root.root.string
8438 ? h->root.root.string : "<unknown>"));
252b5132
RH
8439#endif
8440
8441 /* When generating a shared object, these relocations
70bccea4
AM
8442 are copied into the output file to be resolved at run
8443 time. */
f95f8542
AM
8444 sreloc = elf_section_data (input_section)->sreloc;
8445 if (ifunc)
8446 sreloc = htab->reliplt;
252b5132 8447 if (sreloc == NULL)
f95f8542 8448 return FALSE;
252b5132 8449
0bb2d96a 8450 skip = 0;
5b914448
AM
8451 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8452 input_section,
8453 rel->r_offset);
0bb2d96a
JJ
8454 if (outrel.r_offset == (bfd_vma) -1
8455 || outrel.r_offset == (bfd_vma) -2)
8456 skip = (int) outrel.r_offset;
252b5132
RH
8457 outrel.r_offset += (input_section->output_section->vma
8458 + input_section->output_offset);
8459
8460 if (skip)
8461 memset (&outrel, 0, sizeof outrel);
89200bf8
AM
8462 else if ((h != NULL
8463 && (h->root.type == bfd_link_hash_undefined
8464 || h->root.type == bfd_link_hash_undefweak))
8465 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 8466 {
14acf4dc 8467 BFD_ASSERT (h->dynindx != -1);
7619e7c7 8468 unresolved_reloc = FALSE;
252b5132
RH
8469 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8470 outrel.r_addend = rel->r_addend;
8471 }
8472 else
8473 {
47388f4c
AM
8474 outrel.r_addend = relocation + rel->r_addend;
8475
25f23106 8476 if (r_type != R_PPC_ADDR32)
252b5132 8477 {
89200bf8 8478 long indx = 0;
252b5132 8479
25f23106
AM
8480 if (ifunc != NULL)
8481 {
8482 /* If we get here when building a static
8483 executable, then the libc startup function
8484 responsible for applying indirect function
8485 relocations is going to complain about
8486 the reloc type.
8487 If we get here when building a dynamic
8488 executable, it will be because we have
8489 a text relocation. The dynamic loader
8490 will set the text segment writable and
8491 non-executable to apply text relocations.
8492 So we'll segfault when trying to run the
8493 indirection function to resolve the reloc. */
25f53a85 8494 info->callbacks->einfo
8de848d8 8495 (_("%P: %H: relocation %s for indirect "
25f53a85
AM
8496 "function %s unsupported\n"),
8497 input_bfd, input_section, rel->r_offset,
25f23106
AM
8498 howto->name,
8499 sym_name);
8500 ret = FALSE;
8501 }
cf35638d 8502 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
89200bf8 8503 ;
252b5132
RH
8504 else if (sec == NULL || sec->owner == NULL)
8505 {
8506 bfd_set_error (bfd_error_bad_value);
89200bf8 8507 ret = FALSE;
252b5132
RH
8508 }
8509 else
8510 {
8511 asection *osec;
8512
47388f4c
AM
8513 /* We are turning this relocation into one
8514 against a section symbol. It would be
8515 proper to subtract the symbol's value,
8516 osec->vma, from the emitted reloc addend,
25f23106
AM
8517 but ld.so expects buggy relocs.
8518 FIXME: Why not always use a zero index? */
252b5132
RH
8519 osec = sec->output_section;
8520 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
8521 if (indx == 0)
8522 {
8523 osec = htab->elf.text_index_section;
8524 indx = elf_section_data (osec)->dynindx;
8525 }
8526 BFD_ASSERT (indx != 0);
252b5132 8527#ifdef DEBUG
74541ad4 8528 if (indx == 0)
e460dd0d 8529 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
8530 indx, osec->name, osec->flags,
8531 h->root.root.string);
252b5132
RH
8532#endif
8533 }
8534
8535 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132 8536 }
25f23106
AM
8537 else if (ifunc != NULL)
8538 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8539 else
8540 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
8541 }
8542
947216bf
AM
8543 loc = sreloc->contents;
8544 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8545 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 8546
2243deae 8547 if (skip == -1)
252b5132 8548 continue;
2243deae
L
8549
8550 /* This reloc will be computed at runtime. We clear the memory
8551 so that it contains predictable value. */
8552 if (! skip
8553 && ((input_section->flags & SEC_ALLOC) != 0
8554 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8555 {
8556 relocation = howto->pc_relative ? outrel.r_offset : 0;
8557 addend = 0;
8558 break;
8559 }
252b5132 8560 }
252b5132
RH
8561 break;
8562
32af9f6e
AM
8563 case R_PPC_RELAX_PLT:
8564 case R_PPC_RELAX_PLTREL24:
de972ffa
AM
8565 if (h != NULL)
8566 {
32af9f6e
AM
8567 struct plt_entry *ent;
8568 bfd_vma got2_addend = 0;
8569
8570 if (r_type == R_PPC_RELAX_PLTREL24)
8571 {
8572 if (info->shared)
8573 got2_addend = addend;
8574 addend = 0;
8575 }
8576 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
de972ffa
AM
8577 if (htab->plt_type == PLT_NEW)
8578 relocation = (htab->glink->output_section->vma
8579 + htab->glink->output_offset
8580 + ent->glink_offset);
8581 else
8582 relocation = (htab->plt->output_section->vma
8583 + htab->plt->output_offset
8584 + ent->plt.offset);
8585 }
b4a38de6
AM
8586 /* Fall thru */
8587
32af9f6e 8588 case R_PPC_RELAX:
9abc968f 8589 {
53291d1f
AM
8590 const int *stub;
8591 size_t size;
8592 size_t insn_offset = rel->r_offset;
8593 unsigned int insn;
9abc968f 8594
53291d1f
AM
8595 if (info->shared)
8596 {
8597 relocation -= (input_section->output_section->vma
8598 + input_section->output_offset
8599 + rel->r_offset - 4);
8600 stub = shared_stub_entry;
8601 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8602 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8603 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8604 stub += 3;
8605 size = ARRAY_SIZE (shared_stub_entry) - 3;
8606 }
8607 else
8608 {
8609 stub = stub_entry;
8610 size = ARRAY_SIZE (stub_entry);
8611 }
9abc968f 8612
9abc968f 8613 relocation += addend;
53291d1f
AM
8614 if (info->relocatable)
8615 relocation = 0;
8616
8617 /* First insn is HA, second is LO. */
8618 insn = *stub++;
8619 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8620 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8621 insn_offset += 4;
8622
8623 insn = *stub++;
8624 insn |= relocation & 0xffff;
8625 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8626 insn_offset += 4;
8627 size -= 2;
8628
8629 while (size != 0)
8630 {
8631 insn = *stub++;
8632 --size;
8633 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8634 insn_offset += 4;
8635 }
9bc4e62b
NS
8636
8637 /* Rewrite the reloc and convert one of the trailing nop
8638 relocs to describe this relocation. */
8639 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8640 /* The relocs are at the bottom 2 bytes */
53291d1f 8641 rel[0].r_offset += d_offset;
9bc4e62b
NS
8642 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8643 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8644 rel[1].r_offset += 4;
8645 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8646 rel++;
9abc968f 8647 }
8517fae7 8648 continue;
deaaf2f3 8649
70bccea4 8650 /* Indirect .sdata relocation. */
7619e7c7 8651 case R_PPC_EMB_SDAI16:
c9a2f333 8652 BFD_ASSERT (htab->sdata[0].section != NULL);
bd6c6e2b
AM
8653 if (!is_static_defined (htab->sdata[0].sym))
8654 {
8655 unresolved_reloc = TRUE;
8656 break;
8657 }
7619e7c7 8658 relocation
76750a2f
AM
8659 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8660 h, relocation, rel);
bd6c6e2b 8661 addend = 0;
252b5132
RH
8662 break;
8663
70bccea4 8664 /* Indirect .sdata2 relocation. */
7619e7c7 8665 case R_PPC_EMB_SDA2I16:
c9a2f333 8666 BFD_ASSERT (htab->sdata[1].section != NULL);
bd6c6e2b
AM
8667 if (!is_static_defined (htab->sdata[1].sym))
8668 {
8669 unresolved_reloc = TRUE;
8670 break;
8671 }
7619e7c7 8672 relocation
76750a2f
AM
8673 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8674 h, relocation, rel);
bd6c6e2b 8675 addend = 0;
252b5132
RH
8676 break;
8677
70bccea4
AM
8678 /* Handle the TOC16 reloc. We want to use the offset within the .got
8679 section, not the actual VMA. This is appropriate when generating
8680 an embedded ELF object, for which the .got section acts like the
8681 AIX .toc section. */
7619e7c7 8682 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
8683 if (sec == NULL || sec->output_section == NULL)
8684 {
8685 unresolved_reloc = TRUE;
8686 break;
8687 }
a0f49396
NC
8688 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8689 ".got") == 0
8690 || strcmp (bfd_get_section_name (sec->owner, sec),
8691 ".cgot") == 0);
252b5132 8692
3b4f3a11 8693 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
8694 break;
8695
7619e7c7 8696 case R_PPC_PLTREL24:
f75e0e33
AM
8697 if (h != NULL && ifunc == NULL)
8698 {
8699 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8700 info->shared ? addend : 0);
8701 if (ent == NULL
8702 || htab->plt == NULL)
8703 {
8704 /* We didn't make a PLT entry for this symbol. This
8705 happens when statically linking PIC code, or when
8706 using -Bsymbolic. */
8707 }
8708 else
8709 {
8710 /* Relocation is to the entry for this symbol in the
8711 procedure linkage table. */
8712 unresolved_reloc = FALSE;
8713 if (htab->plt_type == PLT_NEW)
8714 relocation = (htab->glink->output_section->vma
8715 + htab->glink->output_offset
8716 + ent->glink_offset);
8717 else
8718 relocation = (htab->plt->output_section->vma
8719 + htab->plt->output_offset
8720 + ent->plt.offset);
8721 }
8722 }
252b5132 8723
f75e0e33
AM
8724 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8725 addend specifies the GOT pointer offset within .got2.
8726 Don't apply it to the relocation field. */
8727 addend = 0;
8da6118f 8728 break;
252b5132 8729
70bccea4 8730 /* Relocate against _SDA_BASE_. */
7619e7c7 8731 case R_PPC_SDAREL16:
252b5132
RH
8732 {
8733 const char *name;
bd6c6e2b 8734 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
252b5132 8735
bd6c6e2b
AM
8736 if (sec == NULL
8737 || sec->output_section == NULL
8738 || !is_static_defined (sda))
3b4f3a11
AM
8739 {
8740 unresolved_reloc = TRUE;
8741 break;
8742 }
bd6c6e2b 8743 addend -= SYM_VAL (sda);
3b4f3a11 8744
a0f49396 8745 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
8746 if (!(strcmp (name, ".sdata") == 0
8747 || strcmp (name, ".sbss") == 0))
252b5132 8748 {
25f53a85 8749 info->callbacks->einfo
8de848d8 8750 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 8751 "in the wrong output section (%s)\n"),
d003868e 8752 input_bfd,
55fd94b0
AM
8753 sym_name,
8754 howto->name,
8755 name);
252b5132 8756 }
252b5132
RH
8757 }
8758 break;
8759
70bccea4 8760 /* Relocate against _SDA2_BASE_. */
7619e7c7 8761 case R_PPC_EMB_SDA2REL:
252b5132
RH
8762 {
8763 const char *name;
bd6c6e2b 8764 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
252b5132 8765
bd6c6e2b
AM
8766 if (sec == NULL
8767 || sec->output_section == NULL
8768 || !is_static_defined (sda))
3b4f3a11
AM
8769 {
8770 unresolved_reloc = TRUE;
8771 break;
8772 }
bd6c6e2b 8773 addend -= SYM_VAL (sda);
3b4f3a11 8774
a0f49396 8775 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
8776 if (!(strcmp (name, ".sdata2") == 0
8777 || strcmp (name, ".sbss2") == 0))
252b5132 8778 {
25f53a85 8779 info->callbacks->einfo
8de848d8 8780 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 8781 "in the wrong output section (%s)\n"),
d003868e 8782 input_bfd,
55fd94b0
AM
8783 sym_name,
8784 howto->name,
8785 name);
252b5132 8786 }
252b5132
RH
8787 }
8788 break;
8789
b9c361e0 8790 case R_PPC_VLE_LO16A:
86c95733
AM
8791 relocation = relocation + addend;
8792 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8793 relocation, split16a_type);
b9c361e0
JL
8794 continue;
8795
8796 case R_PPC_VLE_LO16D:
86c95733
AM
8797 relocation = relocation + addend;
8798 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8799 relocation, split16d_type);
b9c361e0
JL
8800 continue;
8801
8802 case R_PPC_VLE_HI16A:
86c95733
AM
8803 relocation = (relocation + addend) >> 16;
8804 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8805 relocation, split16a_type);
b9c361e0
JL
8806 continue;
8807
8808 case R_PPC_VLE_HI16D:
86c95733
AM
8809 relocation = (relocation + addend) >> 16;
8810 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8811 relocation, split16d_type);
b9c361e0
JL
8812 continue;
8813
8814 case R_PPC_VLE_HA16A:
86c95733
AM
8815 relocation = (relocation + addend + 0x8000) >> 16;
8816 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8817 relocation, split16a_type);
b9c361e0
JL
8818 continue;
8819
8820 case R_PPC_VLE_HA16D:
86c95733
AM
8821 relocation = (relocation + addend + 0x8000) >> 16;
8822 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8823 relocation, split16d_type);
b9c361e0
JL
8824 continue;
8825
70bccea4 8826 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7 8827 case R_PPC_EMB_SDA21:
b9c361e0 8828 case R_PPC_VLE_SDA21:
7619e7c7 8829 case R_PPC_EMB_RELSDA:
b9c361e0 8830 case R_PPC_VLE_SDA21_LO:
252b5132
RH
8831 {
8832 const char *name;
8833 int reg;
86c95733 8834 unsigned int insn;
bd6c6e2b 8835 struct elf_link_hash_entry *sda = NULL;
252b5132 8836
3b4f3a11
AM
8837 if (sec == NULL || sec->output_section == NULL)
8838 {
8839 unresolved_reloc = TRUE;
8840 break;
8841 }
8842
a0f49396 8843 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
8844 if (strcmp (name, ".sdata") == 0
8845 || strcmp (name, ".sbss") == 0)
252b5132
RH
8846 {
8847 reg = 13;
bd6c6e2b 8848 sda = htab->sdata[0].sym;
252b5132 8849 }
93d1b056
AM
8850 else if (strcmp (name, ".sdata2") == 0
8851 || strcmp (name, ".sbss2") == 0)
252b5132
RH
8852 {
8853 reg = 2;
bd6c6e2b 8854 sda = htab->sdata[1].sym;
252b5132 8855 }
8da6118f
KH
8856 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8857 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
8858 {
8859 reg = 0;
8860 }
252b5132
RH
8861 else
8862 {
25f53a85 8863 info->callbacks->einfo
8de848d8 8864 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 8865 "in the wrong output section (%s)\n"),
d003868e 8866 input_bfd,
55fd94b0
AM
8867 sym_name,
8868 howto->name,
8869 name);
252b5132
RH
8870
8871 bfd_set_error (bfd_error_bad_value);
b34976b6 8872 ret = FALSE;
252b5132
RH
8873 continue;
8874 }
8875
bd6c6e2b
AM
8876 if (sda != NULL)
8877 {
8878 if (!is_static_defined (sda))
8879 {
8880 unresolved_reloc = TRUE;
8881 break;
8882 }
8883 addend -= SYM_VAL (sda);
8884 }
8885
86c95733 8886 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
b9c361e0
JL
8887 if (reg == 0
8888 && (r_type == R_PPC_VLE_SDA21
8889 || r_type == R_PPC_VLE_SDA21_LO))
8890 {
86c95733
AM
8891 relocation = relocation + addend;
8892 addend = 0;
8893
8894 /* Force e_li insn, keeping RT from original insn. */
8895 insn &= 0x1f << 21;
8896 insn |= 28u << 26;
8897
8898 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
8899 /* Top 4 bits of value to 17..20. */
8900 insn |= (relocation & 0xf0000) >> 5;
8901 /* Next 5 bits of the value to 11..15. */
8902 insn |= (relocation & 0xf800) << 5;
8903 /* And the final 11 bits of the value to bits 21 to 31. */
8904 insn |= relocation & 0x7ff;
8905
c3301df1
AM
8906 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8907
8908 if (r_type == R_PPC_VLE_SDA21
8909 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
8910 goto overflow;
8911 continue;
b9c361e0
JL
8912 }
8913 else if (r_type == R_PPC_EMB_SDA21
8914 || r_type == R_PPC_VLE_SDA21
8915 || r_type == R_PPC_VLE_SDA21_LO)
91d6fa6a 8916 {
86c95733 8917 /* Fill in register field. */
252b5132 8918 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
252b5132 8919 }
86c95733 8920 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
8921 }
8922 break;
8923
b9c361e0
JL
8924 case R_PPC_VLE_SDAREL_LO16A:
8925 case R_PPC_VLE_SDAREL_LO16D:
8926 case R_PPC_VLE_SDAREL_HI16A:
8927 case R_PPC_VLE_SDAREL_HI16D:
8928 case R_PPC_VLE_SDAREL_HA16A:
8929 case R_PPC_VLE_SDAREL_HA16D:
8930 {
8931 bfd_vma value;
8932 const char *name;
8933 //int reg;
8934 struct elf_link_hash_entry *sda = NULL;
8935
8936 if (sec == NULL || sec->output_section == NULL)
8937 {
8938 unresolved_reloc = TRUE;
8939 break;
8940 }
8941
a0f49396 8942 name = bfd_get_section_name (output_bfd, sec->output_section);
93d1b056
AM
8943 if (strcmp (name, ".sdata") == 0
8944 || strcmp (name, ".sbss") == 0)
b9c361e0
JL
8945 {
8946 //reg = 13;
8947 sda = htab->sdata[0].sym;
8948 }
93d1b056
AM
8949 else if (strcmp (name, ".sdata2") == 0
8950 || strcmp (name, ".sbss2") == 0)
b9c361e0
JL
8951 {
8952 //reg = 2;
8953 sda = htab->sdata[1].sym;
8954 }
8955 else
8956 {
8957 (*_bfd_error_handler)
8958 (_("%B: the target (%s) of a %s relocation is "
8959 "in the wrong output section (%s)"),
8960 input_bfd,
8961 sym_name,
8962 howto->name,
8963 name);
8964
8965 bfd_set_error (bfd_error_bad_value);
8966 ret = FALSE;
8967 continue;
8968 }
8969
8970 if (sda != NULL)
8971 {
8972 if (!is_static_defined (sda))
8973 {
8974 unresolved_reloc = TRUE;
8975 break;
8976 }
8977 }
8978
86c95733
AM
8979 value = (sda->root.u.def.section->output_section->vma
8980 + sda->root.u.def.section->output_offset
8981 + addend);
8982
8983 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8984 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8985 value, split16a_type);
8986 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8987 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8988 value, split16d_type);
8989 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
b9c361e0 8990 {
86c95733
AM
8991 value = value >> 16;
8992 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8993 value, split16a_type);
b9c361e0 8994 }
86c95733 8995 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
b9c361e0 8996 {
86c95733
AM
8997 value = value >> 16;
8998 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8999 value, split16d_type);
b9c361e0 9000 }
86c95733 9001 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
b9c361e0 9002 {
86c95733
AM
9003 value = (value + 0x8000) >> 16;
9004 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9005 value, split16a_type);
b9c361e0 9006 }
86c95733 9007 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
b9c361e0 9008 {
86c95733
AM
9009 value = (value + 0x8000) >> 16;
9010 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9011 value, split16d_type);
b9c361e0
JL
9012 }
9013 }
9014 continue;
9015
70bccea4 9016 /* Relocate against the beginning of the section. */
7619e7c7
AM
9017 case R_PPC_SECTOFF:
9018 case R_PPC_SECTOFF_LO:
9019 case R_PPC_SECTOFF_HI:
9020 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
9021 if (sec == NULL || sec->output_section == NULL)
9022 {
9023 unresolved_reloc = TRUE;
9024 break;
9025 }
252b5132 9026 addend -= sec->output_section->vma;
252b5132
RH
9027 break;
9028
70bccea4 9029 /* Negative relocations. */
7619e7c7
AM
9030 case R_PPC_EMB_NADDR32:
9031 case R_PPC_EMB_NADDR16:
9032 case R_PPC_EMB_NADDR16_LO:
9033 case R_PPC_EMB_NADDR16_HI:
9034 case R_PPC_EMB_NADDR16_HA:
8da6118f 9035 addend -= 2 * relocation;
252b5132
RH
9036 break;
9037
7619e7c7
AM
9038 case R_PPC_COPY:
9039 case R_PPC_GLOB_DAT:
9040 case R_PPC_JMP_SLOT:
9041 case R_PPC_RELATIVE:
e054468f 9042 case R_PPC_IRELATIVE:
7619e7c7
AM
9043 case R_PPC_PLT32:
9044 case R_PPC_PLTREL32:
9045 case R_PPC_PLT16_LO:
9046 case R_PPC_PLT16_HI:
9047 case R_PPC_PLT16_HA:
9048 case R_PPC_ADDR30:
9049 case R_PPC_EMB_RELSEC16:
9050 case R_PPC_EMB_RELST_LO:
9051 case R_PPC_EMB_RELST_HI:
9052 case R_PPC_EMB_RELST_HA:
9053 case R_PPC_EMB_BIT_FLD:
25f53a85 9054 info->callbacks->einfo
8de848d8 9055 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
d003868e 9056 input_bfd,
7619e7c7
AM
9057 howto->name,
9058 sym_name);
252b5132
RH
9059
9060 bfd_set_error (bfd_error_invalid_operation);
b34976b6 9061 ret = FALSE;
252b5132 9062 continue;
7619e7c7 9063 }
252b5132 9064
7619e7c7
AM
9065 /* Do any further special processing. */
9066 switch (r_type)
9067 {
9068 default:
9069 break;
9070
9071 case R_PPC_ADDR16_HA:
d7128ce4 9072 case R_PPC_REL16_HA:
7619e7c7
AM
9073 case R_PPC_SECTOFF_HA:
9074 case R_PPC_TPREL16_HA:
9075 case R_PPC_DTPREL16_HA:
7619e7c7
AM
9076 case R_PPC_EMB_NADDR16_HA:
9077 case R_PPC_EMB_RELST_HA:
9078 /* It's just possible that this symbol is a weak symbol
7b609f53 9079 that's not actually defined anywhere. In that case,
7619e7c7
AM
9080 'sec' would be NULL, and we should leave the symbol
9081 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
9082 if (sec == NULL)
9083 break;
9084 /* Fall thru */
9085
9086 case R_PPC_PLT16_HA:
9087 case R_PPC_GOT16_HA:
9088 case R_PPC_GOT_TLSGD16_HA:
9089 case R_PPC_GOT_TLSLD16_HA:
9090 case R_PPC_GOT_TPREL16_HA:
9091 case R_PPC_GOT_DTPREL16_HA:
9092 /* Add 0x10000 if sign bit in 0:15 is set.
9093 Bits 0:15 are not used. */
9094 addend += 0x8000;
7619e7c7 9095 break;
1fe532cf
AM
9096
9097 case R_PPC_ADDR16:
9098 case R_PPC_ADDR16_LO:
9099 case R_PPC_GOT16:
9100 case R_PPC_GOT16_LO:
9101 case R_PPC_SDAREL16:
9102 case R_PPC_SECTOFF:
9103 case R_PPC_SECTOFF_LO:
9104 case R_PPC_DTPREL16:
9105 case R_PPC_DTPREL16_LO:
9106 case R_PPC_TPREL16:
9107 case R_PPC_TPREL16_LO:
9108 case R_PPC_GOT_TLSGD16:
9109 case R_PPC_GOT_TLSGD16_LO:
9110 case R_PPC_GOT_TLSLD16:
9111 case R_PPC_GOT_TLSLD16_LO:
9112 case R_PPC_GOT_DTPREL16:
9113 case R_PPC_GOT_DTPREL16_LO:
9114 case R_PPC_GOT_TPREL16:
9115 case R_PPC_GOT_TPREL16_LO:
9116 {
9117 /* The 32-bit ABI lacks proper relocations to deal with
9118 certain 64-bit instructions. Prevent damage to bits
9119 that make up part of the insn opcode. */
9120 unsigned int insn, mask, lobit;
9121
9122 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
9123 mask = 0;
9124 if (is_insn_ds_form (insn))
9125 mask = 3;
9126 else if (is_insn_dq_form (insn))
9127 mask = 15;
9128 else
9129 break;
9130 lobit = mask & (relocation + addend);
9131 if (lobit != 0)
9132 {
9133 addend -= lobit;
9134 info->callbacks->einfo
9135 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9136 input_bfd, input_section, rel->r_offset,
9137 howto->name, sym_name, mask + 1);
9138 bfd_set_error (bfd_error_bad_value);
9139 ret = FALSE;
9140 }
9141 addend += insn & mask;
9142 }
9143 break;
252b5132
RH
9144 }
9145
252b5132 9146#ifdef DEBUG
55fd94b0
AM
9147 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9148 "offset = %ld, addend = %ld\n",
252b5132 9149 howto->name,
8da6118f 9150 (int) r_type,
252b5132
RH
9151 sym_name,
9152 r_symndx,
7619e7c7 9153 (long) rel->r_offset,
8da6118f 9154 (long) addend);
252b5132
RH
9155#endif
9156
7619e7c7
AM
9157 if (unresolved_reloc
9158 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
9159 && h->def_dynamic)
9160 && _bfd_elf_section_offset (output_bfd, info, input_section,
9161 rel->r_offset) != (bfd_vma) -1)
7619e7c7 9162 {
25f53a85 9163 info->callbacks->einfo
8de848d8 9164 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
25f53a85 9165 input_bfd, input_section, rel->r_offset,
7b609f53 9166 howto->name,
7619e7c7
AM
9167 sym_name);
9168 ret = FALSE;
9169 }
9170
86c95733
AM
9171 /* 16-bit fields in insns mostly have signed values, but a
9172 few insns have 16-bit unsigned values. Really, we should
9173 have different reloc types. */
9174 if (howto->complain_on_overflow != complain_overflow_dont
9175 && howto->dst_mask == 0xffff
9176 && (input_section->flags & SEC_CODE) != 0)
9177 {
9178 enum complain_overflow complain = complain_overflow_signed;
9179
9180 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9181 {
9182 unsigned int insn;
9183
9184 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM
9185 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9186 complain = complain_overflow_bitfield;
9187 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9188 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9189 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
86c95733
AM
9190 complain = complain_overflow_unsigned;
9191 }
9192 if (howto->complain_on_overflow != complain)
9193 {
9194 alt_howto = *howto;
9195 alt_howto.complain_on_overflow = complain;
9196 howto = &alt_howto;
9197 }
9198 }
9199
9200 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9201 rel->r_offset, relocation, addend);
252b5132 9202
7619e7c7 9203 if (r != bfd_reloc_ok)
252b5132 9204 {
7619e7c7 9205 if (r == bfd_reloc_overflow)
252b5132 9206 {
c3301df1 9207 overflow:
7619e7c7
AM
9208 if (warned)
9209 continue;
9210 if (h != NULL
9211 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH
9212 && howto->pc_relative)
9213 {
9214 /* Assume this is a call protected by other code that
9215 detect the symbol is undefined. If this is the case,
9216 we can safely ignore the overflow. If not, the
9217 program is hosed anyway, and a little warning isn't
9218 going to help. */
252b5132 9219
dc1bc0c9
RH
9220 continue;
9221 }
252b5132 9222
7619e7c7 9223 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 9224 (h ? &h->root : NULL),
7619e7c7
AM
9225 sym_name,
9226 howto->name,
9227 rel->r_addend,
9228 input_bfd,
9229 input_section,
9230 rel->r_offset))
9231 return FALSE;
dc1bc0c9
RH
9232 }
9233 else
9234 {
25f53a85 9235 info->callbacks->einfo
8de848d8 9236 (_("%P: %H: %s reloc against `%s': error %d\n"),
25f53a85
AM
9237 input_bfd, input_section, rel->r_offset,
9238 howto->name, sym_name, (int) r);
7619e7c7 9239 ret = FALSE;
252b5132
RH
9240 }
9241 }
9242 }
9243
252b5132
RH
9244#ifdef DEBUG
9245 fprintf (stderr, "\n");
9246#endif
9247
53291d1f
AM
9248 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9249 && input_section->size != input_section->rawsize
9250 && (strcmp (input_section->output_section->name, ".init") == 0
9251 || strcmp (input_section->output_section->name, ".fini") == 0))
9252 {
9253 /* Branch around the trampolines. */
9254 unsigned int insn = B + input_section->size - input_section->rawsize;
9255 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9256 }
9257
5446cbdf 9258 if (htab->params->ppc476_workaround
795bc6b3
AM
9259 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9260 && (!info->relocatable
9261 || (input_section->output_section->alignment_power
9262 >= htab->params->pagesize_p2)))
5446cbdf
AM
9263 {
9264 struct ppc_elf_relax_info *relax_info;
9265 bfd_vma start_addr, end_addr, addr;
795bc6b3 9266 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
5446cbdf
AM
9267
9268 relax_info = elf_section_data (input_section)->sec_info;
9269 if (relax_info->workaround_size != 0)
40fd06d1
AM
9270 {
9271 bfd_byte *p;
9272 unsigned int n;
9273 bfd_byte fill[4];
9274
9275 bfd_put_32 (input_bfd, BA, fill);
9276 p = contents + input_section->size - relax_info->workaround_size;
9277 n = relax_info->workaround_size >> 2;
9278 while (n--)
9279 {
9280 memcpy (p, fill, 4);
9281 p += 4;
9282 }
9283 }
5446cbdf
AM
9284
9285 /* The idea is: Replace the last instruction on a page with a
9286 branch to a patch area. Put the insn there followed by a
9287 branch back to the next page. Complicated a little by
9288 needing to handle moved conditional branches, and by not
9289 wanting to touch data-in-text. */
9290
9291 start_addr = (input_section->output_section->vma
9292 + input_section->output_offset);
9293 end_addr = (start_addr + input_section->size
9294 - relax_info->workaround_size);
9295 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9296 addr < end_addr;
9297 addr += pagesize)
9298 {
9299 bfd_vma offset = addr - start_addr;
9300 Elf_Internal_Rela *lo, *hi;
9301 bfd_boolean is_data;
9302 bfd_vma patch_off, patch_addr;
9303 unsigned int insn;
9304
9305 /* Do we have a data reloc at this offset? If so, leave
9306 the word alone. */
9307 is_data = FALSE;
9308 lo = relocs;
668e22e5
AM
9309 hi = relend;
9310 rel = NULL;
5446cbdf
AM
9311 while (lo < hi)
9312 {
9313 rel = lo + (hi - lo) / 2;
9314 if (rel->r_offset < offset)
9315 lo = rel + 1;
668e22e5 9316 else if (rel->r_offset > offset + 3)
5446cbdf
AM
9317 hi = rel;
9318 else
9319 {
9320 switch (ELF32_R_TYPE (rel->r_info))
9321 {
9322 case R_PPC_ADDR32:
9323 case R_PPC_UADDR32:
9324 case R_PPC_REL32:
9325 case R_PPC_ADDR30:
9326 is_data = TRUE;
9327 break;
9328 default:
9329 break;
9330 }
9331 break;
9332 }
9333 }
9334 if (is_data)
9335 continue;
9336
b4ab4364
AM
9337 /* Some instructions can be left alone too. Unconditional
9338 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9339 avoid the icache failure.
9340
9341 The problem occurs due to prefetch across a page boundary
9342 where stale instructions can be fetched from the next
9343 page, and the mechanism for flushing these bad
9344 instructions fails under certain circumstances. The
9345 unconditional branches:
9346 1) Branch: b, bl, ba, bla,
9347 2) Branch Conditional: bc, bca, bcl, bcla,
9348 3) Branch Conditional to Link Register: bclr, bclrl,
9349 where (2) and (3) have BO=0x14 making them unconditional,
9350 prevent the bad prefetch because the prefetch itself is
9351 affected by these instructions. This happens even if the
9352 instruction is not executed.
9353
9354 A bctr example:
9355 .
9356 . lis 9,new_page@ha
9357 . addi 9,9,new_page@l
9358 . mtctr 9
9359 . bctr
9360 . nop
9361 . nop
9362 . new_page:
9363 .
9364 The bctr is not predicted taken due to ctr not being
9365 ready, so prefetch continues on past the bctr into the
9366 new page which might have stale instructions. If they
9367 fail to be flushed, then they will be executed after the
9368 bctr executes. Either of the following modifications
9369 prevent the bad prefetch from happening in the first
9370 place:
9371 .
9372 . lis 9,new_page@ha lis 9,new_page@ha
9373 . addi 9,9,new_page@l addi 9,9,new_page@l
9374 . mtctr 9 mtctr 9
9375 . bctr bctr
9376 . nop b somewhere_else
9377 . b somewhere_else nop
9378 . new_page: new_page:
9379 . */
5446cbdf 9380 insn = bfd_get_32 (input_bfd, contents + offset);
b4ab4364
AM
9381 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9382 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9383 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
5446cbdf 9384 || ((insn & (0x3f << 26)) == (19u << 26)
b4ab4364
AM
9385 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9386 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
5446cbdf
AM
9387 continue;
9388
9389 patch_addr = (start_addr + input_section->size
9390 - relax_info->workaround_size);
9391 patch_addr = (patch_addr + 15) & -16;
9392 patch_off = patch_addr - start_addr;
9393 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
668e22e5
AM
9394
9395 if (rel != NULL
9396 && rel->r_offset >= offset
9397 && rel->r_offset < offset + 4)
9398 {
9399 /* If the insn we are patching had a reloc, adjust the
9400 reloc r_offset so that the reloc applies to the moved
9401 location. This matters for -r and --emit-relocs. */
9402 if (rel + 1 != relend)
9403 {
9404 Elf_Internal_Rela tmp = *rel;
9405
9406 /* Keep the relocs sorted by r_offset. */
9407 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9408 relend[-1] = tmp;
9409 }
9410 relend[-1].r_offset += patch_off - offset;
9411 }
9412 else
9413 rel = NULL;
9414
5446cbdf
AM
9415 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9416 && (insn & 2) == 0 /* relative */)
9417 {
9418 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9419
9420 delta += offset - patch_off;
668e22e5
AM
9421 if (info->relocatable && rel != NULL)
9422 delta = 0;
9423 if (!info->relocatable && rel != NULL)
9424 {
9425 enum elf_ppc_reloc_type r_type;
9426
9427 r_type = ELF32_R_TYPE (relend[-1].r_info);
9428 if (r_type == R_PPC_REL14_BRTAKEN)
9429 insn |= BRANCH_PREDICT_BIT;
9430 else if (r_type == R_PPC_REL14_BRNTAKEN)
9431 insn &= ~BRANCH_PREDICT_BIT;
9432 else
9433 BFD_ASSERT (r_type == R_PPC_REL14);
9434
9435 if ((r_type == R_PPC_REL14_BRTAKEN
9436 || r_type == R_PPC_REL14_BRNTAKEN)
9437 && delta + 0x8000 < 0x10000
9438 && (bfd_signed_vma) delta < 0)
9439 insn ^= BRANCH_PREDICT_BIT;
9440 }
5446cbdf
AM
9441 if (delta + 0x8000 < 0x10000)
9442 {
9443 bfd_put_32 (input_bfd,
9444 (insn & ~0xfffc) | (delta & 0xfffc),
9445 contents + patch_off);
9446 patch_off += 4;
9447 bfd_put_32 (input_bfd,
9448 B | ((offset + 4 - patch_off) & 0x3fffffc),
9449 contents + patch_off);
9450 patch_off += 4;
9451 }
9452 else
9453 {
668e22e5
AM
9454 if (rel != NULL)
9455 {
9456 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9457
9458 relend[-1].r_offset += 8;
9459 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9460 }
5446cbdf
AM
9461 bfd_put_32 (input_bfd,
9462 (insn & ~0xfffc) | 8,
9463 contents + patch_off);
9464 patch_off += 4;
9465 bfd_put_32 (input_bfd,
9466 B | ((offset + 4 - patch_off) & 0x3fffffc),
9467 contents + patch_off);
9468 patch_off += 4;
9469 bfd_put_32 (input_bfd,
9470 B | ((delta - 8) & 0x3fffffc),
9471 contents + patch_off);
9472 patch_off += 4;
9473 }
9474 }
9475 else
9476 {
9477 bfd_put_32 (input_bfd, insn, contents + patch_off);
9478 patch_off += 4;
9479 bfd_put_32 (input_bfd,
9480 B | ((offset + 4 - patch_off) & 0x3fffffc),
9481 contents + patch_off);
9482 patch_off += 4;
9483 }
9484 BFD_ASSERT (patch_off <= input_section->size);
9485 relax_info->workaround_size = input_section->size - patch_off;
9486 }
9487 }
9488
252b5132
RH
9489 return ret;
9490}
252b5132 9491\f
25dbc73a
AM
9492/* Finish up dynamic symbol handling. We set the contents of various
9493 dynamic sections here. */
c5fccbec 9494
b34976b6 9495static bfd_boolean
25dbc73a
AM
9496ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9497 struct bfd_link_info *info,
9498 struct elf_link_hash_entry *h,
9499 Elf_Internal_Sym *sym)
e1a9cb8e 9500{
25dbc73a 9501 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
9502 struct plt_entry *ent;
9503 bfd_boolean doneone;
e1a9cb8e 9504
25dbc73a
AM
9505#ifdef DEBUG
9506 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9507 h->root.root.string);
9508#endif
e1a9cb8e 9509
25dbc73a
AM
9510 htab = ppc_elf_hash_table (info);
9511 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 9512
a6aa5195
AM
9513 doneone = FALSE;
9514 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9515 if (ent->plt.offset != (bfd_vma) -1)
9516 {
9517 if (!doneone)
9518 {
9519 Elf_Internal_Rela rela;
9520 bfd_byte *loc;
9521 bfd_vma reloc_index;
e1a9cb8e 9522
e054468f 9523 if (htab->plt_type == PLT_NEW
25f23106
AM
9524 || !htab->elf.dynamic_sections_created
9525 || h->dynindx == -1)
9d8504b1
PB
9526 reloc_index = ent->plt.offset / 4;
9527 else
9528 {
9529 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9530 / htab->plt_slot_size);
9531 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 9532 && htab->plt_type == PLT_OLD)
9d8504b1
PB
9533 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9534 }
9535
a6aa5195
AM
9536 /* This symbol has an entry in the procedure linkage table.
9537 Set it up. */
e054468f 9538 if (htab->plt_type == PLT_VXWORKS
25f23106
AM
9539 && htab->elf.dynamic_sections_created
9540 && h->dynindx != -1)
a6aa5195 9541 {
9d8504b1
PB
9542 bfd_vma got_offset;
9543 const bfd_vma *plt_entry;
5b914448 9544
9d8504b1
PB
9545 /* The first three entries in .got.plt are reserved. */
9546 got_offset = (reloc_index + 3) * 4;
9547
9548 /* Use the right PLT. */
9549 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9550 : ppc_elf_vxworks_plt_entry;
9551
9552 /* Fill in the .plt on VxWorks. */
9553 if (info->shared)
9554 {
9d8504b1 9555 bfd_put_32 (output_bfd,
e87d4038 9556 plt_entry[0] | PPC_HA (got_offset),
9d8504b1
PB
9557 htab->plt->contents + ent->plt.offset + 0);
9558 bfd_put_32 (output_bfd,
e87d4038 9559 plt_entry[1] | PPC_LO (got_offset),
9d8504b1
PB
9560 htab->plt->contents + ent->plt.offset + 4);
9561 }
9562 else
9563 {
e87d4038 9564 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
9565
9566 bfd_put_32 (output_bfd,
e87d4038 9567 plt_entry[0] | PPC_HA (got_loc),
9d8504b1
PB
9568 htab->plt->contents + ent->plt.offset + 0);
9569 bfd_put_32 (output_bfd,
e87d4038 9570 plt_entry[1] | PPC_LO (got_loc),
9d8504b1
PB
9571 htab->plt->contents + ent->plt.offset + 4);
9572 }
9573
9574 bfd_put_32 (output_bfd, plt_entry[2],
9575 htab->plt->contents + ent->plt.offset + 8);
9576 bfd_put_32 (output_bfd, plt_entry[3],
9577 htab->plt->contents + ent->plt.offset + 12);
9578
9579 /* This instruction is an immediate load. The value loaded is
9580 the byte offset of the R_PPC_JMP_SLOT relocation from the
9581 start of the .rela.plt section. The value is stored in the
9582 low-order 16 bits of the load instruction. */
9583 /* NOTE: It appears that this is now an index rather than a
9584 prescaled offset. */
5b914448 9585 bfd_put_32 (output_bfd,
9d8504b1
PB
9586 plt_entry[4] | reloc_index,
9587 htab->plt->contents + ent->plt.offset + 16);
9588 /* This instruction is a PC-relative branch whose target is
9589 the start of the PLT section. The address of this branch
9590 instruction is 20 bytes beyond the start of this PLT entry.
9591 The address is encoded in bits 6-29, inclusive. The value
9592 stored is right-shifted by two bits, permitting a 26-bit
9593 offset. */
5b914448
AM
9594 bfd_put_32 (output_bfd,
9595 (plt_entry[5]
9d8504b1
PB
9596 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9597 htab->plt->contents + ent->plt.offset + 20);
9598 bfd_put_32 (output_bfd, plt_entry[6],
9599 htab->plt->contents + ent->plt.offset + 24);
9600 bfd_put_32 (output_bfd, plt_entry[7],
9601 htab->plt->contents + ent->plt.offset + 28);
9602
9603 /* Fill in the GOT entry corresponding to this PLT slot with
a8685210 9604 the address immediately after the "bctr" instruction
9d8504b1
PB
9605 in this PLT entry. */
9606 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9607 + htab->plt->output_offset
9608 + ent->plt.offset + 16),
9609 htab->sgotplt->contents + got_offset);
9610
9611 if (!info->shared)
9612 {
9613 /* Fill in a couple of entries in .rela.plt.unloaded. */
9614 loc = htab->srelplt2->contents
9615 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9616 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9617 * sizeof (Elf32_External_Rela));
9618
9619 /* Provide the @ha relocation for the first instruction. */
9620 rela.r_offset = (htab->plt->output_section->vma
9621 + htab->plt->output_offset
9622 + ent->plt.offset + 2);
636ce3f5 9623 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
9624 R_PPC_ADDR16_HA);
9625 rela.r_addend = got_offset;
9626 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9627 loc += sizeof (Elf32_External_Rela);
9628
9629 /* Provide the @l relocation for the second instruction. */
9630 rela.r_offset = (htab->plt->output_section->vma
9631 + htab->plt->output_offset
9632 + ent->plt.offset + 6);
636ce3f5 9633 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
9634 R_PPC_ADDR16_LO);
9635 rela.r_addend = got_offset;
9636 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9637 loc += sizeof (Elf32_External_Rela);
9638
9639 /* Provide a relocation for the GOT entry corresponding to this
9640 PLT slot. Point it at the middle of the .plt entry. */
9641 rela.r_offset = (htab->sgotplt->output_section->vma
9642 + htab->sgotplt->output_offset
9643 + got_offset);
7325306f 9644 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
9645 R_PPC_ADDR32);
9646 rela.r_addend = ent->plt.offset + 16;
9647 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9648 }
9649
9650 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9651 In particular, the offset for the relocation is not the
9652 address of the PLT entry for this function, as specified
9653 by the ABI. Instead, the offset is set to the address of
9654 the GOT slot for this function. See EABI 4.4.4.1. */
9655 rela.r_offset = (htab->sgotplt->output_section->vma
9656 + htab->sgotplt->output_offset
9657 + got_offset);
9658
a6aa5195
AM
9659 }
9660 else
9661 {
e054468f 9662 asection *splt = htab->plt;
25f23106
AM
9663 if (!htab->elf.dynamic_sections_created
9664 || h->dynindx == -1)
e054468f
AM
9665 splt = htab->iplt;
9666
9667 rela.r_offset = (splt->output_section->vma
9668 + splt->output_offset
9d8504b1 9669 + ent->plt.offset);
e054468f 9670 if (htab->plt_type == PLT_OLD
25f23106
AM
9671 || !htab->elf.dynamic_sections_created
9672 || h->dynindx == -1)
9d8504b1
PB
9673 {
9674 /* We don't need to fill in the .plt. The ppc dynamic
9675 linker will fill it in. */
9676 }
9677 else
9678 {
9679 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9680 + htab->glink->output_section->vma
9681 + htab->glink->output_offset);
9682 bfd_put_32 (output_bfd, val,
e054468f 9683 splt->contents + ent->plt.offset);
9d8504b1 9684 }
a6aa5195 9685 }
e1a9cb8e 9686
a6aa5195 9687 /* Fill in the entry in the .rela.plt section. */
a6aa5195 9688 rela.r_addend = 0;
e054468f
AM
9689 if (!htab->elf.dynamic_sections_created
9690 || h->dynindx == -1)
9691 {
9692 BFD_ASSERT (h->type == STT_GNU_IFUNC
9693 && h->def_regular
9694 && (h->root.type == bfd_link_hash_defined
9695 || h->root.type == bfd_link_hash_defweak));
9696 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9697 rela.r_addend = SYM_VAL (h);
9698 }
9699 else
9700 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
e1a9cb8e 9701
25f23106
AM
9702 if (!htab->elf.dynamic_sections_created
9703 || h->dynindx == -1)
9704 loc = (htab->reliplt->contents
9705 + (htab->reliplt->reloc_count++
9706 * sizeof (Elf32_External_Rela)));
e054468f 9707 else
25f23106
AM
9708 loc = (htab->relplt->contents
9709 + reloc_index * sizeof (Elf32_External_Rela));
a6aa5195 9710 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 9711
a6aa5195
AM
9712 if (!h->def_regular)
9713 {
0eb4a168
AM
9714 /* Mark the symbol as undefined, rather than as
9715 defined in the .plt section. Leave the value if
9716 there were any relocations where pointer equality
9717 matters (this is a clue for the dynamic linker, to
9718 make function pointer comparisons work between an
9719 application and shared library), otherwise set it
9720 to zero. */
a6aa5195 9721 sym->st_shndx = SHN_UNDEF;
0eb4a168 9722 if (!h->pointer_equality_needed)
a6aa5195 9723 sym->st_value = 0;
0eb4a168
AM
9724 else if (!h->ref_regular_nonweak)
9725 {
625af618
AM
9726 /* This breaks function pointer comparisons, but
9727 that is better than breaking tests for a NULL
0eb4a168 9728 function pointer. */
0eb4a168
AM
9729 sym->st_value = 0;
9730 }
a6aa5195 9731 }
de972ffa
AM
9732 else if (h->type == STT_GNU_IFUNC
9733 && !info->shared)
9734 {
9735 /* Set the value of ifunc symbols in a non-pie
9736 executable to the glink entry. This is to avoid
9737 text relocations. We can't do this for ifunc in
9738 allocate_dynrelocs, as we do for normal dynamic
9739 function symbols with plt entries, because we need
9740 to keep the original value around for the ifunc
9741 relocation. */
9742 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9743 (output_bfd, htab->glink->output_section));
5b914448
AM
9744 sym->st_value = (ent->glink_offset
9745 + htab->glink->output_offset
de972ffa
AM
9746 + htab->glink->output_section->vma);
9747 }
a6aa5195
AM
9748 doneone = TRUE;
9749 }
e1a9cb8e 9750
e054468f 9751 if (htab->plt_type == PLT_NEW
25f23106
AM
9752 || !htab->elf.dynamic_sections_created
9753 || h->dynindx == -1)
a6aa5195 9754 {
a7f2871e 9755 unsigned char *p;
e054468f 9756 asection *splt = htab->plt;
25f23106
AM
9757 if (!htab->elf.dynamic_sections_created
9758 || h->dynindx == -1)
e054468f 9759 splt = htab->iplt;
e1a9cb8e 9760
a7f2871e
AM
9761 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9762
5446cbdf 9763 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
a7f2871e
AM
9764 {
9765 bfd_put_32 (output_bfd, LWZ_11_3, p);
9766 p += 4;
9767 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9768 p += 4;
9769 bfd_put_32 (output_bfd, MR_0_3, p);
9770 p += 4;
9771 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9772 p += 4;
9773 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9774 p += 4;
9775 bfd_put_32 (output_bfd, BEQLR, p);
9776 p += 4;
9777 bfd_put_32 (output_bfd, MR_3_0, p);
9778 p += 4;
9779 bfd_put_32 (output_bfd, NOP, p);
9780 p += 4;
9781 }
9782
9783 write_glink_stub (ent, splt, p, info);
e1a9cb8e 9784
a877a2b6 9785 if (!info->shared)
e054468f
AM
9786 /* We only need one non-PIC glink stub. */
9787 break;
a6aa5195
AM
9788 }
9789 else
9790 break;
9791 }
e1a9cb8e 9792
25dbc73a
AM
9793 if (h->needs_copy)
9794 {
9795 asection *s;
9796 Elf_Internal_Rela rela;
9797 bfd_byte *loc;
e1a9cb8e 9798
25dbc73a 9799 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 9800
25dbc73a
AM
9801#ifdef DEBUG
9802 fprintf (stderr, ", copy");
9803#endif
e1a9cb8e 9804
25dbc73a 9805 BFD_ASSERT (h->dynindx != -1);
86bbe32f 9806
4dc4a9a5 9807 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
9808 s = htab->relsbss;
9809 else
9810 s = htab->relbss;
9811 BFD_ASSERT (s != NULL);
e1a9cb8e 9812
e87d4038 9813 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
9814 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9815 rela.r_addend = 0;
9816 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9817 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9818 }
e1a9cb8e 9819
25dbc73a
AM
9820#ifdef DEBUG
9821 fprintf (stderr, "\n");
9822#endif
e1a9cb8e 9823
25dbc73a
AM
9824 return TRUE;
9825}
9826\f
9827static enum elf_reloc_type_class
7e612e98
AM
9828ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9829 const asection *rel_sec,
9830 const Elf_Internal_Rela *rela)
e1a9cb8e 9831{
7e612e98
AM
9832 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9833
9834 if (rel_sec == htab->reliplt)
9835 return reloc_class_ifunc;
9836
25dbc73a
AM
9837 switch (ELF32_R_TYPE (rela->r_info))
9838 {
9839 case R_PPC_RELATIVE:
9840 return reloc_class_relative;
25dbc73a
AM
9841 case R_PPC_JMP_SLOT:
9842 return reloc_class_plt;
9843 case R_PPC_COPY:
9844 return reloc_class_copy;
9845 default:
9846 return reloc_class_normal;
9847 }
e1a9cb8e 9848}
25dbc73a
AM
9849\f
9850/* Finish up the dynamic sections. */
e1a9cb8e 9851
25dbc73a
AM
9852static bfd_boolean
9853ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9854 struct bfd_link_info *info)
e1a9cb8e 9855{
25dbc73a 9856 asection *sdyn;
9d8504b1 9857 asection *splt;
25dbc73a 9858 struct ppc_elf_link_hash_table *htab;
1fe44d79 9859 bfd_vma got;
e87d4038
AM
9860 bfd *dynobj;
9861 bfd_boolean ret = TRUE;
e1a9cb8e 9862
25dbc73a
AM
9863#ifdef DEBUG
9864 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9865#endif
6b0817e5 9866
25dbc73a 9867 htab = ppc_elf_hash_table (info);
9d8504b1 9868 dynobj = elf_hash_table (info)->dynobj;
3d4d4302 9869 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9d8504b1 9870 if (htab->is_vxworks)
3d4d4302 9871 splt = bfd_get_linker_section (dynobj, ".plt");
9d8504b1
PB
9872 else
9873 splt = NULL;
e1a9cb8e 9874
1fe44d79
AM
9875 got = 0;
9876 if (htab->elf.hgot != NULL)
e87d4038 9877 got = SYM_VAL (htab->elf.hgot);
1fe44d79 9878
25dbc73a 9879 if (htab->elf.dynamic_sections_created)
e1a9cb8e 9880 {
25dbc73a 9881 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 9882
25dbc73a 9883 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 9884
25dbc73a
AM
9885 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9886 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9887 for (; dyncon < dynconend; dyncon++)
9888 {
9889 Elf_Internal_Dyn dyn;
9890 asection *s;
e1a9cb8e 9891
9d8504b1 9892 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 9893
25dbc73a
AM
9894 switch (dyn.d_tag)
9895 {
9896 case DT_PLTGOT:
9d8504b1
PB
9897 if (htab->is_vxworks)
9898 s = htab->sgotplt;
9899 else
9900 s = htab->plt;
25dbc73a
AM
9901 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9902 break;
86bbe32f 9903
25dbc73a
AM
9904 case DT_PLTRELSZ:
9905 dyn.d_un.d_val = htab->relplt->size;
9906 break;
e1a9cb8e 9907
25dbc73a
AM
9908 case DT_JMPREL:
9909 s = htab->relplt;
9910 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9911 break;
2f89ff8d 9912
1fe44d79
AM
9913 case DT_PPC_GOT:
9914 dyn.d_un.d_ptr = got;
d7128ce4
AM
9915 break;
9916
9d8504b1
PB
9917 case DT_RELASZ:
9918 if (htab->is_vxworks)
9919 {
9920 if (htab->relplt)
9921 dyn.d_un.d_ptr -= htab->relplt->size;
9922 break;
9923 }
9924 continue;
9925
25dbc73a 9926 default:
7a2b07ff
NS
9927 if (htab->is_vxworks
9928 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9929 break;
25dbc73a
AM
9930 continue;
9931 }
4c45e5c9 9932
25dbc73a
AM
9933 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9934 }
9935 }
4c45e5c9 9936
3b36f7e6 9937 if (htab->got != NULL)
25dbc73a 9938 {
e79f5955
AM
9939 if (htab->elf.hgot->root.u.def.section == htab->got
9940 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
e87d4038 9941 {
e79f5955 9942 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 9943
e87d4038
AM
9944 p += htab->elf.hgot->root.u.def.value;
9945 if (htab->plt_type == PLT_OLD)
e79f5955
AM
9946 {
9947 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9948 so that a function can easily find the address of
9949 _GLOBAL_OFFSET_TABLE_. */
9950 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9951 < htab->elf.hgot->root.u.def.section->size);
9952 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9953 }
3b36f7e6 9954
e87d4038 9955 if (sdyn != NULL)
e79f5955
AM
9956 {
9957 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9958 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9959 < htab->elf.hgot->root.u.def.section->size);
9960 bfd_put_32 (output_bfd, val, p);
9961 }
e87d4038
AM
9962 }
9963 else
9964 {
8de848d8 9965 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
25f53a85
AM
9966 htab->elf.hgot->root.root.string,
9967 (htab->sgotplt != NULL
9968 ? htab->sgotplt->name : htab->got->name));
e87d4038
AM
9969 bfd_set_error (bfd_error_bad_value);
9970 ret = FALSE;
9971 }
25dbc73a
AM
9972
9973 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
9974 }
9975
9d8504b1
PB
9976 /* Fill in the first entry in the VxWorks procedure linkage table. */
9977 if (splt && splt->size > 0)
9978 {
9979 /* Use the right PLT. */
5b914448
AM
9980 const bfd_vma *plt_entry = (info->shared
9981 ? ppc_elf_vxworks_pic_plt0_entry
9982 : ppc_elf_vxworks_plt0_entry);
9d8504b1
PB
9983
9984 if (!info->shared)
9985 {
e87d4038 9986 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 9987
e87d4038 9988 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 9989 splt->contents + 0);
e87d4038 9990 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
9991 splt->contents + 4);
9992 }
9993 else
9994 {
9995 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
9996 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
9997 }
9998 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
9999 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10000 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10001 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10002 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10003 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10004
10005 if (! info->shared)
10006 {
10007 Elf_Internal_Rela rela;
10008 bfd_byte *loc;
10009
10010 loc = htab->srelplt2->contents;
10011
10012 /* Output the @ha relocation for the first instruction. */
10013 rela.r_offset = (htab->plt->output_section->vma
10014 + htab->plt->output_offset
10015 + 2);
636ce3f5 10016 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10017 rela.r_addend = 0;
10018 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10019 loc += sizeof (Elf32_External_Rela);
5b914448 10020
9d8504b1
PB
10021 /* Output the @l relocation for the second instruction. */
10022 rela.r_offset = (htab->plt->output_section->vma
10023 + htab->plt->output_offset
10024 + 6);
636ce3f5 10025 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10026 rela.r_addend = 0;
10027 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10028 loc += sizeof (Elf32_External_Rela);
10029
10030 /* Fix up the remaining relocations. They may have the wrong
10031 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10032 in which symbols were output. */
10033 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10034 {
10035 Elf_Internal_Rela rel;
10036
10037 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10038 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
10039 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10040 loc += sizeof (Elf32_External_Rela);
10041
10042 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 10043 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
10044 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10045 loc += sizeof (Elf32_External_Rela);
10046
10047 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 10048 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
10049 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10050 loc += sizeof (Elf32_External_Rela);
10051 }
10052 }
10053 }
10054
e054468f
AM
10055 if (htab->glink != NULL
10056 && htab->glink->contents != NULL
10057 && htab->elf.dynamic_sections_created)
d7128ce4
AM
10058 {
10059 unsigned char *p;
10060 unsigned char *endp;
a6aa5195 10061 bfd_vma res0;
d7128ce4 10062 unsigned int i;
a6aa5195
AM
10063
10064 /*
10065 * PIC glink code is the following:
10066 *
10067 * # ith PLT code stub.
10068 * addis 11,30,(plt+(i-1)*4-got)@ha
10069 * lwz 11,(plt+(i-1)*4-got)@l(11)
10070 * mtctr 11
10071 * bctr
10072 *
10073 * # A table of branches, one for each plt entry.
176a0d42 10074 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
10075 * # addresses, so (r11 - res_0) gives the plt index * 4.
10076 * res_0: b PLTresolve
10077 * res_1: b PLTresolve
10078 * .
10079 * # Some number of entries towards the end can be nops
10080 * res_n_m3: nop
10081 * res_n_m2: nop
10082 * res_n_m1:
10083 *
10084 * PLTresolve:
10085 * addis 11,11,(1f-res_0)@ha
10086 * mflr 0
10087 * bcl 20,31,1f
10088 * 1: addi 11,11,(1b-res_0)@l
10089 * mflr 12
10090 * mtlr 0
10091 * sub 11,11,12 # r11 = index * 4
10092 * addis 12,12,(got+4-1b)@ha
10093 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10094 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10095 * mtctr 0
10096 * add 0,11,11
10097 * add 11,0,11 # r11 = index * 12 = reloc offset.
10098 * bctr
10099 */
10100 static const unsigned int pic_plt_resolve[] =
10101 {
10102 ADDIS_11_11,
10103 MFLR_0,
10104 BCL_20_31,
10105 ADDI_11_11,
10106 MFLR_12,
10107 MTLR_0,
10108 SUB_11_11_12,
10109 ADDIS_12_12,
10110 LWZ_0_12,
10111 LWZ_12_12,
10112 MTCTR_0,
10113 ADD_0_11_11,
10114 ADD_11_0_11,
10115 BCTR,
10116 NOP,
10117 NOP
10118 };
10119
176a0d42
AM
10120 /*
10121 * Non-PIC glink code is a little simpler.
10122 *
10123 * # ith PLT code stub.
10124 * lis 11,(plt+(i-1)*4)@ha
10125 * lwz 11,(plt+(i-1)*4)@l(11)
10126 * mtctr 11
10127 * bctr
10128 *
10129 * The branch table is the same, then comes
10130 *
10131 * PLTresolve:
10132 * lis 12,(got+4)@ha
10133 * addis 11,11,(-res_0)@ha
10134 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10135 * addi 11,11,(-res_0)@l # r11 = index * 4
10136 * mtctr 0
10137 * add 0,11,11
10138 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10139 * add 11,0,11 # r11 = index * 12 = reloc offset.
10140 * bctr
10141 */
d7128ce4
AM
10142 static const unsigned int plt_resolve[] =
10143 {
a6aa5195
AM
10144 LIS_12,
10145 ADDIS_11_11,
10146 LWZ_0_12,
10147 ADDI_11_11,
d7128ce4 10148 MTCTR_0,
7e8aeb9a 10149 ADD_0_11_11,
a6aa5195 10150 LWZ_12_12,
7e8aeb9a 10151 ADD_11_0_11,
d7128ce4
AM
10152 BCTR,
10153 NOP,
10154 NOP,
a6aa5195
AM
10155 NOP,
10156 NOP,
10157 NOP,
10158 NOP,
d7128ce4
AM
10159 NOP
10160 };
10161
a6aa5195
AM
10162 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10163 abort ();
10164 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
10165 abort ();
10166
a6aa5195 10167 /* Build the branch table, one for each plt entry (less one),
86b9da88 10168 and perhaps some padding. */
a6aa5195
AM
10169 p = htab->glink->contents;
10170 p += htab->glink_pltresolve;
86b9da88
AM
10171 endp = htab->glink->contents;
10172 endp += htab->glink->size - GLINK_PLTRESOLVE;
da3a2088 10173 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
86b9da88
AM
10174 {
10175 bfd_put_32 (output_bfd, B + endp - p, p);
10176 p += 4;
10177 }
10178 while (p < endp)
10179 {
10180 bfd_put_32 (output_bfd, NOP, p);
10181 p += 4;
10182 }
10183
7e8aeb9a 10184 res0 = (htab->glink_pltresolve
86b9da88
AM
10185 + htab->glink->output_section->vma
10186 + htab->glink->output_offset);
10187
da3a2088
AM
10188 if (htab->params->ppc476_workaround)
10189 {
10190 /* Ensure that a call stub at the end of a page doesn't
10191 result in prefetch over the end of the page into the
10192 glink branch table. */
10193 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10194 bfd_vma page_addr;
10195 bfd_vma glink_start = (htab->glink->output_section->vma
10196 + htab->glink->output_offset);
10197
10198 for (page_addr = res0 & -pagesize;
10199 page_addr > glink_start;
10200 page_addr -= pagesize)
10201 {
10202 /* We have a plt call stub that may need fixing. */
10203 bfd_byte *loc;
10204 unsigned int insn;
10205
10206 loc = htab->glink->contents + page_addr - 4 - glink_start;
10207 insn = bfd_get_32 (output_bfd, loc);
10208 if (insn == BCTR)
10209 {
10210 /* By alignment, we know that there must be at least
10211 one other call stub before this one. */
10212 insn = bfd_get_32 (output_bfd, loc - 16);
10213 if (insn == BCTR)
10214 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10215 else
10216 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10217 }
10218 }
10219 }
10220
86b9da88 10221 /* Last comes the PLTresolve stub. */
a877a2b6 10222 if (info->shared)
7e8aeb9a 10223 {
a6aa5195 10224 bfd_vma bcl;
d7128ce4 10225
a6aa5195 10226 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 10227 {
da3a2088
AM
10228 unsigned int insn = pic_plt_resolve[i];
10229
10230 if (htab->params->ppc476_workaround && insn == NOP)
10231 insn = BA + 0;
10232 bfd_put_32 (output_bfd, insn, p);
7e8aeb9a
AM
10233 p += 4;
10234 }
a6aa5195
AM
10235 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10236
10237 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10238 + htab->glink->output_section->vma
10239 + htab->glink->output_offset);
10240
10241 bfd_put_32 (output_bfd,
10242 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10243 bfd_put_32 (output_bfd,
10244 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10245 bfd_put_32 (output_bfd,
10246 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10247 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10248 {
10249 bfd_put_32 (output_bfd,
10250 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10251 bfd_put_32 (output_bfd,
10252 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10253 }
10254 else
10255 {
10256 bfd_put_32 (output_bfd,
10257 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10258 bfd_put_32 (output_bfd,
10259 LWZ_12_12 + 4, p + 9*4);
10260 }
7e8aeb9a
AM
10261 }
10262 else
d7128ce4 10263 {
a6aa5195 10264 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a 10265 {
da3a2088
AM
10266 unsigned int insn = plt_resolve[i];
10267
10268 if (htab->params->ppc476_workaround && insn == NOP)
10269 insn = BA + 0;
10270 bfd_put_32 (output_bfd, insn, p);
7e8aeb9a
AM
10271 p += 4;
10272 }
a6aa5195
AM
10273 p -= 4 * ARRAY_SIZE (plt_resolve);
10274
10275 bfd_put_32 (output_bfd,
10276 LIS_12 + PPC_HA (got + 4), p + 0*4);
10277 bfd_put_32 (output_bfd,
10278 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10279 bfd_put_32 (output_bfd,
10280 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10281 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10282 {
10283 bfd_put_32 (output_bfd,
10284 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10285 bfd_put_32 (output_bfd,
10286 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10287 }
10288 else
10289 {
10290 bfd_put_32 (output_bfd,
10291 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10292 bfd_put_32 (output_bfd,
10293 LWZ_12_12 + 4, p + 6*4);
10294 }
d7128ce4 10295 }
d7128ce4
AM
10296 }
10297
6177242a
AM
10298 if (htab->glink_eh_frame != NULL
10299 && htab->glink_eh_frame->contents != NULL)
10300 {
10301 unsigned char *p = htab->glink_eh_frame->contents;
10302 bfd_vma val;
10303
6177242a
AM
10304 p += sizeof (glink_eh_frame_cie);
10305 /* FDE length. */
6177242a
AM
10306 p += 4;
10307 /* CIE pointer. */
6177242a
AM
10308 p += 4;
10309 /* Offset to .glink. */
10310 val = (htab->glink->output_section->vma
10311 + htab->glink->output_offset);
10312 val -= (htab->glink_eh_frame->output_section->vma
10313 + htab->glink_eh_frame->output_offset);
10314 val -= p - htab->glink_eh_frame->contents;
10315 bfd_put_32 (htab->elf.dynobj, val, p);
6177242a 10316
dbaa2011 10317 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
6177242a
AM
10318 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10319 htab->glink_eh_frame,
10320 htab->glink_eh_frame->contents))
10321 return FALSE;
10322 }
10323
e87d4038 10324 return ret;
25dbc73a 10325}
e1a9cb8e 10326\f
6d00b590 10327#define TARGET_LITTLE_SYM powerpc_elf32_le_vec
252b5132 10328#define TARGET_LITTLE_NAME "elf32-powerpcle"
6d00b590 10329#define TARGET_BIG_SYM powerpc_elf32_vec
252b5132
RH
10330#define TARGET_BIG_NAME "elf32-powerpc"
10331#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 10332#define ELF_TARGET_ID PPC32_ELF_DATA
252b5132 10333#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
10334#ifdef __QNXTARGET__
10335#define ELF_MAXPAGESIZE 0x1000
04c6a44c 10336#define ELF_COMMONPAGESIZE 0x1000
d0facd1b 10337#else
252b5132 10338#define ELF_MAXPAGESIZE 0x10000
04c6a44c 10339#define ELF_COMMONPAGESIZE 0x10000
d0facd1b 10340#endif
b1342370 10341#define ELF_MINPAGESIZE 0x1000
252b5132
RH
10342#define elf_info_to_howto ppc_elf_info_to_howto
10343
10344#ifdef EM_CYGNUS_POWERPC
10345#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10346#endif
10347
10348#ifdef EM_PPC_OLD
10349#define ELF_MACHINE_ALT2 EM_PPC_OLD
10350#endif
10351
10352#define elf_backend_plt_not_loaded 1
252b5132 10353#define elf_backend_can_gc_sections 1
51b64d56 10354#define elf_backend_can_refcount 1
b491616a 10355#define elf_backend_rela_normal 1
53291d1f 10356#define elf_backend_caches_rawsize 1
252b5132 10357
43c40ab2 10358#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 10359#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 10360#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 10361#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
b9c361e0 10362#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 10363#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 10364#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 10365#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 10366
feee612b 10367#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
10368#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10369#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10370#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10371#define elf_backend_relocate_section ppc_elf_relocate_section
10372#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10373#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 10374#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
10375#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10376#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10377#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 10378#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
10379#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10380#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10381#define elf_backend_fake_sections ppc_elf_fake_sections
10382#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
b9c361e0 10383#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
c5fccbec
DJ
10384#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10385#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 10386#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 10387#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
10388#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10389#define elf_backend_final_write_processing ppc_elf_final_write_processing
10390#define elf_backend_write_section ppc_elf_write_section
551b43fd 10391#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 10392#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 10393#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 10394#define elf_backend_init_index_section _bfd_elf_init_1_index_section
b9c361e0 10395#define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
b9c361e0 10396#define elf_backend_section_processing ppc_elf_section_processing
252b5132
RH
10397
10398#include "elf32-target.h"
9d8504b1 10399
7b8e7dad
AM
10400/* FreeBSD Target */
10401
10402#undef TARGET_LITTLE_SYM
10403#undef TARGET_LITTLE_NAME
10404
10405#undef TARGET_BIG_SYM
6d00b590 10406#define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
7b8e7dad
AM
10407#undef TARGET_BIG_NAME
10408#define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10409
10410#undef ELF_OSABI
10411#define ELF_OSABI ELFOSABI_FREEBSD
10412
10413#undef elf32_bed
10414#define elf32_bed elf32_powerpc_fbsd_bed
10415
10416#include "elf32-target.h"
10417
9d8504b1
PB
10418/* VxWorks Target */
10419
10420#undef TARGET_LITTLE_SYM
10421#undef TARGET_LITTLE_NAME
10422
10423#undef TARGET_BIG_SYM
6d00b590 10424#define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
9d8504b1
PB
10425#undef TARGET_BIG_NAME
10426#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10427
7b8e7dad
AM
10428#undef ELF_OSABI
10429
d5e3d971
PB
10430/* VxWorks uses the elf default section flags for .plt. */
10431static const struct bfd_elf_special_section *
10432ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 10433{
d5e3d971
PB
10434 if (sec->name == NULL)
10435 return NULL;
10436
10437 if (strcmp (sec->name, ".plt") == 0)
10438 return _bfd_elf_get_sec_type_attr (abfd, sec);
10439
10440 return ppc_elf_get_sec_type_attr (abfd, sec);
10441}
9d8504b1
PB
10442
10443/* Like ppc_elf_link_hash_table_create, but overrides
10444 appropriately for VxWorks. */
10445static struct bfd_link_hash_table *
10446ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10447{
10448 struct bfd_link_hash_table *ret;
10449
10450 ret = ppc_elf_link_hash_table_create (abfd);
10451 if (ret)
10452 {
10453 struct ppc_elf_link_hash_table *htab
10454 = (struct ppc_elf_link_hash_table *)ret;
10455 htab->is_vxworks = 1;
4a3dc543 10456 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
10457 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10458 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10459 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10460 }
10461 return ret;
10462}
10463
10464/* Tweak magic VxWorks symbols as they are loaded. */
10465static bfd_boolean
10466ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10467 struct bfd_link_info *info,
10468 Elf_Internal_Sym *sym,
10469 const char **namep ATTRIBUTE_UNUSED,
10470 flagword *flagsp ATTRIBUTE_UNUSED,
10471 asection **secp,
10472 bfd_vma *valp)
10473{
10474 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10475 valp))
10476 return FALSE;
10477
10478 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10479}
10480
9d8504b1
PB
10481static void
10482ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10483{
10484 ppc_elf_final_write_processing(abfd, linker);
10485 elf_vxworks_final_write_processing(abfd, linker);
10486}
10487
10488/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10489 define it. */
10490#undef elf_backend_want_plt_sym
10491#define elf_backend_want_plt_sym 1
10492#undef elf_backend_want_got_plt
10493#define elf_backend_want_got_plt 1
10494#undef elf_backend_got_symbol_offset
10495#define elf_backend_got_symbol_offset 0
10496#undef elf_backend_plt_not_loaded
10497#define elf_backend_plt_not_loaded 0
10498#undef elf_backend_plt_readonly
10499#define elf_backend_plt_readonly 1
10500#undef elf_backend_got_header_size
10501#define elf_backend_got_header_size 12
10502
468392fb
AM
10503#undef bfd_elf32_get_synthetic_symtab
10504
9d8504b1
PB
10505#undef bfd_elf32_bfd_link_hash_table_create
10506#define bfd_elf32_bfd_link_hash_table_create \
10507 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
10508#undef elf_backend_add_symbol_hook
10509#define elf_backend_add_symbol_hook \
10510 ppc_elf_vxworks_add_symbol_hook
10511#undef elf_backend_link_output_symbol_hook
10512#define elf_backend_link_output_symbol_hook \
9c72ff84 10513 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
10514#undef elf_backend_final_write_processing
10515#define elf_backend_final_write_processing \
10516 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
10517#undef elf_backend_get_sec_type_attr
10518#define elf_backend_get_sec_type_attr \
10519 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
10520#undef elf_backend_emit_relocs
10521#define elf_backend_emit_relocs \
10522 elf_vxworks_emit_relocs
10523
10524#undef elf32_bed
10525#define elf32_bed ppc_elf_vxworks_bed
e054468f 10526#undef elf_backend_post_process_headers
9d8504b1
PB
10527
10528#include "elf32-target.h"
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