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252b5132 1/* PowerPC-specific support for 32-bit ELF
051d5130 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3a71aa26 3 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
252b5132
RH
4 Written by Ian Lance Taylor, Cygnus Support.
5
ae9a127f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
ae9a127f
NC
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
ae9a127f 11 (at your option) any later version.
252b5132 12
ae9a127f
NC
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
ae9a127f 18 You should have received a copy of the GNU General Public License
fc0bffd6 19 along with this program; if not, write to the
3e110533 20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
53e09e0a 21 Boston, MA 02110-1301, USA. */
252b5132 22
cd123cb7 23
252b5132
RH
24/* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
28
3db64b00 29#include "sysdep.h"
183e98be 30#include <stdarg.h>
252b5132 31#include "bfd.h"
252b5132
RH
32#include "bfdlink.h"
33#include "libbfd.h"
34#include "elf-bfd.h"
35#include "elf/ppc.h"
7619e7c7 36#include "elf32-ppc.h"
9d8504b1 37#include "elf-vxworks.h"
252b5132 38
f0fe0e16 39/* RELA relocations are used here. */
252b5132 40
252b5132 41static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 43static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 45
70bccea4
AM
46/* Branch prediction bit for branch taken relocs. */
47#define BRANCH_PREDICT_BIT 0x200000
48/* Mask to set RA in memory instructions. */
49#define RA_REGISTER_MASK 0x001f0000
50/* Value to shift register by to insert RA. */
51#define RA_REGISTER_SHIFT 16
252b5132
RH
52
53/* The name of the dynamic interpreter. This is put in the .interp
54 section. */
252b5132
RH
55#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
56
d7128ce4 57/* For old-style PLT. */
252b5132
RH
58/* The number of single-slot PLT entries (the rest use two slots). */
59#define PLT_NUM_SINGLE_ENTRIES 8192
60
d7128ce4 61/* For new-style .glink and .plt. */
a6aa5195 62#define GLINK_PLTRESOLVE 16*4
d7128ce4
AM
63#define GLINK_ENTRY_SIZE 4*4
64
9d8504b1
PB
65/* VxWorks uses its own plt layout, filled in by the static linker. */
66
67/* The standard VxWorks PLT entry. */
68#define VXWORKS_PLT_ENTRY_SIZE 32
69static const bfd_vma ppc_elf_vxworks_plt_entry
70 [VXWORKS_PLT_ENTRY_SIZE / 4] =
71 {
72 0x3d800000, /* lis r12,0 */
73 0x818c0000, /* lwz r12,0(r12) */
74 0x7d8903a6, /* mtctr r12 */
75 0x4e800420, /* bctr */
76 0x39600000, /* li r11,0 */
77 0x48000000, /* b 14 <.PLT0resolve+0x4> */
78 0x60000000, /* nop */
79 0x60000000, /* nop */
80 };
81static const bfd_vma ppc_elf_vxworks_pic_plt_entry
82 [VXWORKS_PLT_ENTRY_SIZE / 4] =
83 {
84 0x3d9e0000, /* addis r12,r30,0 */
85 0x818c0000, /* lwz r12,0(r12) */
86 0x7d8903a6, /* mtctr r12 */
87 0x4e800420, /* bctr */
88 0x39600000, /* li r11,0 */
89 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
90 0x60000000, /* nop */
91 0x60000000, /* nop */
92 };
93
94/* The initial VxWorks PLT entry. */
95#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
96static const bfd_vma ppc_elf_vxworks_plt0_entry
97 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
98 {
99 0x3d800000, /* lis r12,0 */
100 0x398c0000, /* addi r12,r12,0 */
101 0x800c0008, /* lwz r0,8(r12) */
102 0x7c0903a6, /* mtctr r0 */
103 0x818c0004, /* lwz r12,4(r12) */
104 0x4e800420, /* bctr */
105 0x60000000, /* nop */
106 0x60000000, /* nop */
107 };
108static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
109 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
110 {
111 0x819e0008, /* lwz r12,8(r30) */
112 0x7d8903a6, /* mtctr r12 */
113 0x819e0004, /* lwz r12,4(r30) */
114 0x4e800420, /* bctr */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
119 };
120
121/* For executables, we have some additional relocations in
122 .rela.plt.unloaded, for the kernel loader. */
123
124/* The number of non-JMP_SLOT relocations per PLT0 slot. */
125#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
126/* The number of relocations in the PLTResolve slot. */
127#define VXWORKS_PLTRESOLVE_RELOCS 2
128/* The number of relocations in the PLTResolve slot when when creating
129 a shared library. */
130#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
131
d7128ce4 132/* Some instructions. */
d7128ce4 133#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM
134#define ADDIS_11_30 0x3d7e0000
135#define ADDIS_12_12 0x3d8c0000
d7128ce4 136#define ADDI_11_11 0x396b0000
d7128ce4
AM
137#define ADD_0_11_11 0x7c0b5a14
138#define ADD_11_0_11 0x7d605a14
a6aa5195
AM
139#define B 0x48000000
140#define BCL_20_31 0x429f0005
d7128ce4 141#define BCTR 0x4e800420
7e8aeb9a
AM
142#define LIS_11 0x3d600000
143#define LIS_12 0x3d800000
a6aa5195
AM
144#define LWZU_0_12 0x840c0000
145#define LWZ_0_12 0x800c0000
146#define LWZ_11_11 0x816b0000
147#define LWZ_11_30 0x817e0000
148#define LWZ_12_12 0x818c0000
149#define MFLR_0 0x7c0802a6
150#define MFLR_12 0x7d8802a6
151#define MTCTR_0 0x7c0903a6
152#define MTCTR_11 0x7d6903a6
153#define MTLR_0 0x7c0803a6
154#define NOP 0x60000000
155#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM
156
157/* Offset of tp and dtp pointers from start of TLS block. */
158#define TP_OFFSET 0x7000
159#define DTP_OFFSET 0x8000
e87d4038
AM
160
161/* The value of a defined global symbol. */
162#define SYM_VAL(SYM) \
163 ((SYM)->root.u.def.section->output_section->vma \
164 + (SYM)->root.u.def.section->output_offset \
165 + (SYM)->root.u.def.value)
7fce784e 166\f
e47cd125 167static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 168
8da6118f 169static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH
170 /* This reloc does nothing. */
171 HOWTO (R_PPC_NONE, /* type */
172 0, /* rightshift */
173 2, /* size (0 = byte, 1 = short, 2 = long) */
174 32, /* bitsize */
b34976b6 175 FALSE, /* pc_relative */
252b5132
RH
176 0, /* bitpos */
177 complain_overflow_bitfield, /* complain_on_overflow */
178 bfd_elf_generic_reloc, /* special_function */
179 "R_PPC_NONE", /* name */
b34976b6 180 FALSE, /* partial_inplace */
252b5132
RH
181 0, /* src_mask */
182 0, /* dst_mask */
b34976b6 183 FALSE), /* pcrel_offset */
252b5132
RH
184
185 /* A standard 32 bit relocation. */
186 HOWTO (R_PPC_ADDR32, /* type */
187 0, /* rightshift */
188 2, /* size (0 = byte, 1 = short, 2 = long) */
189 32, /* bitsize */
b34976b6 190 FALSE, /* pc_relative */
252b5132
RH
191 0, /* bitpos */
192 complain_overflow_bitfield, /* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_PPC_ADDR32", /* name */
b34976b6 195 FALSE, /* partial_inplace */
252b5132
RH
196 0, /* src_mask */
197 0xffffffff, /* dst_mask */
b34976b6 198 FALSE), /* pcrel_offset */
252b5132
RH
199
200 /* An absolute 26 bit branch; the lower two bits must be zero.
201 FIXME: we don't check that, we just clear them. */
202 HOWTO (R_PPC_ADDR24, /* type */
203 0, /* rightshift */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
205 26, /* bitsize */
b34976b6 206 FALSE, /* pc_relative */
252b5132
RH
207 0, /* bitpos */
208 complain_overflow_bitfield, /* complain_on_overflow */
209 bfd_elf_generic_reloc, /* special_function */
210 "R_PPC_ADDR24", /* name */
b34976b6 211 FALSE, /* partial_inplace */
252b5132
RH
212 0, /* src_mask */
213 0x3fffffc, /* dst_mask */
b34976b6 214 FALSE), /* pcrel_offset */
252b5132
RH
215
216 /* A standard 16 bit relocation. */
217 HOWTO (R_PPC_ADDR16, /* type */
218 0, /* rightshift */
219 1, /* size (0 = byte, 1 = short, 2 = long) */
220 16, /* bitsize */
b34976b6 221 FALSE, /* pc_relative */
252b5132
RH
222 0, /* bitpos */
223 complain_overflow_bitfield, /* complain_on_overflow */
224 bfd_elf_generic_reloc, /* special_function */
225 "R_PPC_ADDR16", /* name */
b34976b6 226 FALSE, /* partial_inplace */
252b5132
RH
227 0, /* src_mask */
228 0xffff, /* dst_mask */
b34976b6 229 FALSE), /* pcrel_offset */
252b5132
RH
230
231 /* A 16 bit relocation without overflow. */
232 HOWTO (R_PPC_ADDR16_LO, /* type */
233 0, /* rightshift */
234 1, /* size (0 = byte, 1 = short, 2 = long) */
235 16, /* bitsize */
b34976b6 236 FALSE, /* pc_relative */
252b5132
RH
237 0, /* bitpos */
238 complain_overflow_dont,/* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_PPC_ADDR16_LO", /* name */
b34976b6 241 FALSE, /* partial_inplace */
252b5132
RH
242 0, /* src_mask */
243 0xffff, /* dst_mask */
b34976b6 244 FALSE), /* pcrel_offset */
252b5132
RH
245
246 /* The high order 16 bits of an address. */
247 HOWTO (R_PPC_ADDR16_HI, /* type */
248 16, /* rightshift */
249 1, /* size (0 = byte, 1 = short, 2 = long) */
250 16, /* bitsize */
b34976b6 251 FALSE, /* pc_relative */
252b5132
RH
252 0, /* bitpos */
253 complain_overflow_dont, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_PPC_ADDR16_HI", /* name */
b34976b6 256 FALSE, /* partial_inplace */
252b5132
RH
257 0, /* src_mask */
258 0xffff, /* dst_mask */
b34976b6 259 FALSE), /* pcrel_offset */
252b5132
RH
260
261 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 262 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH
263 HOWTO (R_PPC_ADDR16_HA, /* type */
264 16, /* rightshift */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
266 16, /* bitsize */
b34976b6 267 FALSE, /* pc_relative */
252b5132
RH
268 0, /* bitpos */
269 complain_overflow_dont, /* complain_on_overflow */
270 ppc_elf_addr16_ha_reloc, /* special_function */
271 "R_PPC_ADDR16_HA", /* name */
b34976b6 272 FALSE, /* partial_inplace */
252b5132
RH
273 0, /* src_mask */
274 0xffff, /* dst_mask */
b34976b6 275 FALSE), /* pcrel_offset */
252b5132
RH
276
277 /* An absolute 16 bit branch; the lower two bits must be zero.
278 FIXME: we don't check that, we just clear them. */
279 HOWTO (R_PPC_ADDR14, /* type */
280 0, /* rightshift */
281 2, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
b34976b6 283 FALSE, /* pc_relative */
252b5132
RH
284 0, /* bitpos */
285 complain_overflow_bitfield, /* complain_on_overflow */
286 bfd_elf_generic_reloc, /* special_function */
287 "R_PPC_ADDR14", /* name */
b34976b6 288 FALSE, /* partial_inplace */
252b5132
RH
289 0, /* src_mask */
290 0xfffc, /* dst_mask */
b34976b6 291 FALSE), /* pcrel_offset */
252b5132
RH
292
293 /* An absolute 16 bit branch, for which bit 10 should be set to
294 indicate that the branch is expected to be taken. The lower two
8da6118f 295 bits must be zero. */
252b5132
RH
296 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
b34976b6 300 FALSE, /* pc_relative */
252b5132
RH
301 0, /* bitpos */
302 complain_overflow_bitfield, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14_BRTAKEN",/* 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 not expected to be taken. The lower
312 two bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
314 0, /* rightshift */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
316 16, /* bitsize */
b34976b6 317 FALSE, /* pc_relative */
252b5132
RH
318 0, /* bitpos */
319 complain_overflow_bitfield, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 322 FALSE, /* partial_inplace */
252b5132
RH
323 0, /* src_mask */
324 0xfffc, /* dst_mask */
b34976b6 325 FALSE), /* pcrel_offset */
252b5132 326
8da6118f 327 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH
328 HOWTO (R_PPC_REL24, /* type */
329 0, /* rightshift */
330 2, /* size (0 = byte, 1 = short, 2 = long) */
331 26, /* bitsize */
b34976b6 332 TRUE, /* pc_relative */
252b5132
RH
333 0, /* bitpos */
334 complain_overflow_signed, /* complain_on_overflow */
335 bfd_elf_generic_reloc, /* special_function */
336 "R_PPC_REL24", /* name */
b34976b6 337 FALSE, /* partial_inplace */
252b5132
RH
338 0, /* src_mask */
339 0x3fffffc, /* dst_mask */
b34976b6 340 TRUE), /* pcrel_offset */
252b5132 341
8da6118f 342 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH
343 HOWTO (R_PPC_REL14, /* type */
344 0, /* rightshift */
345 2, /* size (0 = byte, 1 = short, 2 = long) */
346 16, /* bitsize */
b34976b6 347 TRUE, /* pc_relative */
252b5132
RH
348 0, /* bitpos */
349 complain_overflow_signed, /* complain_on_overflow */
350 bfd_elf_generic_reloc, /* special_function */
351 "R_PPC_REL14", /* name */
b34976b6 352 FALSE, /* partial_inplace */
252b5132
RH
353 0, /* src_mask */
354 0xfffc, /* dst_mask */
b34976b6 355 TRUE), /* pcrel_offset */
252b5132 356
8da6118f 357 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
358 the branch is expected to be taken. The lower two bits must be
359 zero. */
360 HOWTO (R_PPC_REL14_BRTAKEN, /* 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_BRTAKEN", /* 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 not expected to be taken. The lower two bits must
376 be zero. */
377 HOWTO (R_PPC_REL14_BRNTAKEN, /* 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_BRNTAKEN",/* name */
b34976b6 386 FALSE, /* partial_inplace */
252b5132
RH
387 0, /* src_mask */
388 0xfffc, /* dst_mask */
b34976b6 389 TRUE), /* pcrel_offset */
252b5132
RH
390
391 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
392 symbol. */
393 HOWTO (R_PPC_GOT16, /* type */
394 0, /* rightshift */
395 1, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
b34976b6 397 FALSE, /* pc_relative */
252b5132
RH
398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC_GOT16", /* name */
b34976b6 402 FALSE, /* partial_inplace */
252b5132
RH
403 0, /* src_mask */
404 0xffff, /* dst_mask */
b34976b6 405 FALSE), /* pcrel_offset */
252b5132
RH
406
407 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
408 the symbol. */
409 HOWTO (R_PPC_GOT16_LO, /* type */
410 0, /* rightshift */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
412 16, /* bitsize */
b34976b6 413 FALSE, /* pc_relative */
252b5132
RH
414 0, /* bitpos */
415 complain_overflow_dont, /* complain_on_overflow */
416 bfd_elf_generic_reloc, /* special_function */
417 "R_PPC_GOT16_LO", /* name */
b34976b6 418 FALSE, /* partial_inplace */
252b5132
RH
419 0, /* src_mask */
420 0xffff, /* dst_mask */
b34976b6 421 FALSE), /* pcrel_offset */
252b5132
RH
422
423 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
424 the symbol. */
425 HOWTO (R_PPC_GOT16_HI, /* type */
426 16, /* rightshift */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
428 16, /* bitsize */
b34976b6 429 FALSE, /* pc_relative */
252b5132
RH
430 0, /* bitpos */
431 complain_overflow_bitfield, /* complain_on_overflow */
432 bfd_elf_generic_reloc, /* special_function */
433 "R_PPC_GOT16_HI", /* name */
b34976b6 434 FALSE, /* partial_inplace */
252b5132
RH
435 0, /* src_mask */
436 0xffff, /* dst_mask */
b34976b6 437 FALSE), /* pcrel_offset */
252b5132
RH
438
439 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
440 the symbol. */
441 HOWTO (R_PPC_GOT16_HA, /* type */
442 16, /* rightshift */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
444 16, /* bitsize */
b34976b6 445 FALSE, /* pc_relative */
252b5132
RH
446 0, /* bitpos */
447 complain_overflow_bitfield, /* complain_on_overflow */
448 ppc_elf_addr16_ha_reloc, /* special_function */
449 "R_PPC_GOT16_HA", /* name */
b34976b6 450 FALSE, /* partial_inplace */
252b5132
RH
451 0, /* src_mask */
452 0xffff, /* dst_mask */
b34976b6 453 FALSE), /* pcrel_offset */
252b5132
RH
454
455 /* Like R_PPC_REL24, but referring to the procedure linkage table
456 entry for the symbol. */
457 HOWTO (R_PPC_PLTREL24, /* type */
458 0, /* rightshift */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
460 26, /* bitsize */
b34976b6 461 TRUE, /* pc_relative */
252b5132
RH
462 0, /* bitpos */
463 complain_overflow_signed, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_PPC_PLTREL24", /* name */
b34976b6 466 FALSE, /* partial_inplace */
252b5132
RH
467 0, /* src_mask */
468 0x3fffffc, /* dst_mask */
b34976b6 469 TRUE), /* pcrel_offset */
252b5132
RH
470
471 /* This is used only by the dynamic linker. The symbol should exist
472 both in the object being run and in some shared library. The
473 dynamic linker copies the data addressed by the symbol from the
474 shared library into the object, because the object being
475 run has to have the data at some particular address. */
476 HOWTO (R_PPC_COPY, /* type */
477 0, /* rightshift */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
479 32, /* bitsize */
b34976b6 480 FALSE, /* pc_relative */
252b5132
RH
481 0, /* bitpos */
482 complain_overflow_bitfield, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_PPC_COPY", /* name */
b34976b6 485 FALSE, /* partial_inplace */
252b5132
RH
486 0, /* src_mask */
487 0, /* dst_mask */
b34976b6 488 FALSE), /* pcrel_offset */
252b5132
RH
489
490 /* Like R_PPC_ADDR32, but used when setting global offset table
491 entries. */
492 HOWTO (R_PPC_GLOB_DAT, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 32, /* bitsize */
b34976b6 496 FALSE, /* pc_relative */
252b5132
RH
497 0, /* bitpos */
498 complain_overflow_bitfield, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_PPC_GLOB_DAT", /* name */
b34976b6 501 FALSE, /* partial_inplace */
252b5132
RH
502 0, /* src_mask */
503 0xffffffff, /* dst_mask */
b34976b6 504 FALSE), /* pcrel_offset */
252b5132
RH
505
506 /* Marks a procedure linkage table entry for a symbol. */
507 HOWTO (R_PPC_JMP_SLOT, /* type */
508 0, /* rightshift */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
510 32, /* bitsize */
b34976b6 511 FALSE, /* pc_relative */
252b5132
RH
512 0, /* bitpos */
513 complain_overflow_bitfield, /* complain_on_overflow */
514 bfd_elf_generic_reloc, /* special_function */
515 "R_PPC_JMP_SLOT", /* name */
b34976b6 516 FALSE, /* partial_inplace */
252b5132
RH
517 0, /* src_mask */
518 0, /* dst_mask */
b34976b6 519 FALSE), /* pcrel_offset */
252b5132
RH
520
521 /* Used only by the dynamic linker. When the object is run, this
522 longword is set to the load address of the object, plus the
523 addend. */
524 HOWTO (R_PPC_RELATIVE, /* type */
525 0, /* rightshift */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
527 32, /* bitsize */
b34976b6 528 FALSE, /* pc_relative */
252b5132
RH
529 0, /* bitpos */
530 complain_overflow_bitfield, /* complain_on_overflow */
531 bfd_elf_generic_reloc, /* special_function */
532 "R_PPC_RELATIVE", /* name */
b34976b6 533 FALSE, /* partial_inplace */
252b5132
RH
534 0, /* src_mask */
535 0xffffffff, /* dst_mask */
b34976b6 536 FALSE), /* pcrel_offset */
252b5132
RH
537
538 /* Like R_PPC_REL24, but uses the value of the symbol within the
539 object rather than the final value. Normally used for
540 _GLOBAL_OFFSET_TABLE_. */
541 HOWTO (R_PPC_LOCAL24PC, /* type */
542 0, /* rightshift */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
544 26, /* bitsize */
b34976b6 545 TRUE, /* pc_relative */
252b5132
RH
546 0, /* bitpos */
547 complain_overflow_signed, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_LOCAL24PC", /* name */
b34976b6 550 FALSE, /* partial_inplace */
252b5132
RH
551 0, /* src_mask */
552 0x3fffffc, /* dst_mask */
b34976b6 553 TRUE), /* pcrel_offset */
252b5132
RH
554
555 /* Like R_PPC_ADDR32, but may be unaligned. */
556 HOWTO (R_PPC_UADDR32, /* type */
557 0, /* rightshift */
558 2, /* size (0 = byte, 1 = short, 2 = long) */
559 32, /* bitsize */
b34976b6 560 FALSE, /* pc_relative */
252b5132
RH
561 0, /* bitpos */
562 complain_overflow_bitfield, /* complain_on_overflow */
563 bfd_elf_generic_reloc, /* special_function */
564 "R_PPC_UADDR32", /* name */
b34976b6 565 FALSE, /* partial_inplace */
252b5132
RH
566 0, /* src_mask */
567 0xffffffff, /* dst_mask */
b34976b6 568 FALSE), /* pcrel_offset */
252b5132
RH
569
570 /* Like R_PPC_ADDR16, but may be unaligned. */
571 HOWTO (R_PPC_UADDR16, /* type */
572 0, /* rightshift */
573 1, /* size (0 = byte, 1 = short, 2 = long) */
574 16, /* bitsize */
b34976b6 575 FALSE, /* pc_relative */
252b5132
RH
576 0, /* bitpos */
577 complain_overflow_bitfield, /* complain_on_overflow */
578 bfd_elf_generic_reloc, /* special_function */
579 "R_PPC_UADDR16", /* name */
b34976b6 580 FALSE, /* partial_inplace */
252b5132
RH
581 0, /* src_mask */
582 0xffff, /* dst_mask */
b34976b6 583 FALSE), /* pcrel_offset */
252b5132
RH
584
585 /* 32-bit PC relative */
586 HOWTO (R_PPC_REL32, /* type */
587 0, /* rightshift */
588 2, /* size (0 = byte, 1 = short, 2 = long) */
589 32, /* bitsize */
b34976b6 590 TRUE, /* pc_relative */
252b5132
RH
591 0, /* bitpos */
592 complain_overflow_bitfield, /* complain_on_overflow */
593 bfd_elf_generic_reloc, /* special_function */
594 "R_PPC_REL32", /* name */
b34976b6 595 FALSE, /* partial_inplace */
252b5132
RH
596 0, /* src_mask */
597 0xffffffff, /* dst_mask */
b34976b6 598 TRUE), /* pcrel_offset */
252b5132
RH
599
600 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 601 FIXME: not supported. */
252b5132
RH
602 HOWTO (R_PPC_PLT32, /* type */
603 0, /* rightshift */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
605 32, /* bitsize */
b34976b6 606 FALSE, /* pc_relative */
252b5132
RH
607 0, /* bitpos */
608 complain_overflow_bitfield, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_PLT32", /* name */
b34976b6 611 FALSE, /* partial_inplace */
252b5132
RH
612 0, /* src_mask */
613 0, /* dst_mask */
b34976b6 614 FALSE), /* pcrel_offset */
252b5132
RH
615
616 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 617 FIXME: not supported. */
252b5132
RH
618 HOWTO (R_PPC_PLTREL32, /* type */
619 0, /* rightshift */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
621 32, /* bitsize */
b34976b6 622 TRUE, /* pc_relative */
252b5132
RH
623 0, /* bitpos */
624 complain_overflow_bitfield, /* complain_on_overflow */
625 bfd_elf_generic_reloc, /* special_function */
626 "R_PPC_PLTREL32", /* name */
b34976b6 627 FALSE, /* partial_inplace */
252b5132
RH
628 0, /* src_mask */
629 0, /* dst_mask */
b34976b6 630 TRUE), /* pcrel_offset */
252b5132
RH
631
632 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
633 the symbol. */
634 HOWTO (R_PPC_PLT16_LO, /* type */
635 0, /* rightshift */
636 1, /* size (0 = byte, 1 = short, 2 = long) */
637 16, /* bitsize */
b34976b6 638 FALSE, /* pc_relative */
252b5132
RH
639 0, /* bitpos */
640 complain_overflow_dont, /* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_PPC_PLT16_LO", /* name */
b34976b6 643 FALSE, /* partial_inplace */
252b5132
RH
644 0, /* src_mask */
645 0xffff, /* dst_mask */
b34976b6 646 FALSE), /* pcrel_offset */
252b5132
RH
647
648 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
649 the symbol. */
650 HOWTO (R_PPC_PLT16_HI, /* type */
651 16, /* rightshift */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
653 16, /* bitsize */
b34976b6 654 FALSE, /* pc_relative */
252b5132
RH
655 0, /* bitpos */
656 complain_overflow_bitfield, /* complain_on_overflow */
657 bfd_elf_generic_reloc, /* special_function */
658 "R_PPC_PLT16_HI", /* name */
b34976b6 659 FALSE, /* partial_inplace */
252b5132
RH
660 0, /* src_mask */
661 0xffff, /* dst_mask */
b34976b6 662 FALSE), /* pcrel_offset */
252b5132
RH
663
664 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
665 the symbol. */
666 HOWTO (R_PPC_PLT16_HA, /* type */
667 16, /* rightshift */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
669 16, /* bitsize */
b34976b6 670 FALSE, /* pc_relative */
252b5132
RH
671 0, /* bitpos */
672 complain_overflow_bitfield, /* complain_on_overflow */
673 ppc_elf_addr16_ha_reloc, /* special_function */
674 "R_PPC_PLT16_HA", /* name */
b34976b6 675 FALSE, /* partial_inplace */
252b5132
RH
676 0, /* src_mask */
677 0xffff, /* dst_mask */
b34976b6 678 FALSE), /* pcrel_offset */
252b5132
RH
679
680 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
681 small data items. */
682 HOWTO (R_PPC_SDAREL16, /* type */
683 0, /* rightshift */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
b34976b6 686 FALSE, /* pc_relative */
252b5132
RH
687 0, /* bitpos */
688 complain_overflow_signed, /* complain_on_overflow */
689 bfd_elf_generic_reloc, /* special_function */
690 "R_PPC_SDAREL16", /* name */
b34976b6 691 FALSE, /* partial_inplace */
252b5132
RH
692 0, /* src_mask */
693 0xffff, /* dst_mask */
b34976b6 694 FALSE), /* pcrel_offset */
252b5132 695
c061c2d8 696 /* 16-bit section relative relocation. */
252b5132
RH
697 HOWTO (R_PPC_SECTOFF, /* type */
698 0, /* rightshift */
c061c2d8
AM
699 1, /* size (0 = byte, 1 = short, 2 = long) */
700 16, /* bitsize */
b34976b6 701 FALSE, /* pc_relative */
252b5132
RH
702 0, /* bitpos */
703 complain_overflow_bitfield, /* complain_on_overflow */
704 bfd_elf_generic_reloc, /* special_function */
705 "R_PPC_SECTOFF", /* name */
b34976b6 706 FALSE, /* partial_inplace */
252b5132 707 0, /* src_mask */
c061c2d8 708 0xffff, /* dst_mask */
b34976b6 709 FALSE), /* pcrel_offset */
252b5132 710
c3668558 711 /* 16-bit lower half section relative relocation. */
252b5132
RH
712 HOWTO (R_PPC_SECTOFF_LO, /* type */
713 0, /* rightshift */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
715 16, /* bitsize */
b34976b6 716 FALSE, /* pc_relative */
252b5132
RH
717 0, /* bitpos */
718 complain_overflow_dont, /* complain_on_overflow */
719 bfd_elf_generic_reloc, /* special_function */
720 "R_PPC_SECTOFF_LO", /* name */
b34976b6 721 FALSE, /* partial_inplace */
252b5132
RH
722 0, /* src_mask */
723 0xffff, /* dst_mask */
b34976b6 724 FALSE), /* pcrel_offset */
252b5132 725
c3668558 726 /* 16-bit upper half section relative relocation. */
252b5132
RH
727 HOWTO (R_PPC_SECTOFF_HI, /* type */
728 16, /* rightshift */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
b34976b6 731 FALSE, /* pc_relative */
252b5132
RH
732 0, /* bitpos */
733 complain_overflow_bitfield, /* complain_on_overflow */
734 bfd_elf_generic_reloc, /* special_function */
735 "R_PPC_SECTOFF_HI", /* name */
b34976b6 736 FALSE, /* partial_inplace */
252b5132
RH
737 0, /* src_mask */
738 0xffff, /* dst_mask */
b34976b6 739 FALSE), /* pcrel_offset */
252b5132 740
c3668558 741 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH
742 HOWTO (R_PPC_SECTOFF_HA, /* type */
743 16, /* rightshift */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
745 16, /* bitsize */
b34976b6 746 FALSE, /* pc_relative */
252b5132
RH
747 0, /* bitpos */
748 complain_overflow_bitfield, /* complain_on_overflow */
749 ppc_elf_addr16_ha_reloc, /* special_function */
750 "R_PPC_SECTOFF_HA", /* name */
b34976b6 751 FALSE, /* partial_inplace */
252b5132
RH
752 0, /* src_mask */
753 0xffff, /* dst_mask */
b34976b6 754 FALSE), /* pcrel_offset */
252b5132 755
727fc41e 756 /* Marker relocs for TLS. */
7619e7c7 757 HOWTO (R_PPC_TLS,
252b5132
RH
758 0, /* rightshift */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
760 32, /* bitsize */
b34976b6 761 FALSE, /* pc_relative */
252b5132 762 0, /* bitpos */
7619e7c7 763 complain_overflow_dont, /* complain_on_overflow */
252b5132 764 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM
765 "R_PPC_TLS", /* name */
766 FALSE, /* partial_inplace */
767 0, /* src_mask */
768 0, /* dst_mask */
769 FALSE), /* pcrel_offset */
770
727fc41e
AM
771 HOWTO (R_PPC_TLSGD,
772 0, /* rightshift */
773 2, /* size (0 = byte, 1 = short, 2 = long) */
774 32, /* bitsize */
775 FALSE, /* pc_relative */
776 0, /* bitpos */
777 complain_overflow_dont, /* complain_on_overflow */
778 bfd_elf_generic_reloc, /* special_function */
779 "R_PPC_TLSGD", /* name */
780 FALSE, /* partial_inplace */
781 0, /* src_mask */
782 0, /* dst_mask */
783 FALSE), /* pcrel_offset */
784
785 HOWTO (R_PPC_TLSLD,
786 0, /* rightshift */
787 2, /* size (0 = byte, 1 = short, 2 = long) */
788 32, /* bitsize */
789 FALSE, /* pc_relative */
790 0, /* bitpos */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC_TLSLD", /* name */
794 FALSE, /* partial_inplace */
795 0, /* src_mask */
796 0, /* dst_mask */
797 FALSE), /* pcrel_offset */
798
7619e7c7
AM
799 /* Computes the load module index of the load module that contains the
800 definition of its TLS sym. */
801 HOWTO (R_PPC_DTPMOD32,
802 0, /* rightshift */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
804 32, /* bitsize */
805 FALSE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_dont, /* complain_on_overflow */
808 ppc_elf_unhandled_reloc, /* special_function */
809 "R_PPC_DTPMOD32", /* name */
b34976b6 810 FALSE, /* partial_inplace */
252b5132
RH
811 0, /* src_mask */
812 0xffffffff, /* dst_mask */
b34976b6 813 FALSE), /* pcrel_offset */
252b5132 814
7619e7c7
AM
815 /* Computes a dtv-relative displacement, the difference between the value
816 of sym+add and the base address of the thread-local storage block that
817 contains the definition of sym, minus 0x8000. */
818 HOWTO (R_PPC_DTPREL32,
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_DTPREL32", /* name */
827 FALSE, /* partial_inplace */
828 0, /* src_mask */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
831
832 /* A 16 bit dtprel reloc. */
833 HOWTO (R_PPC_DTPREL16,
252b5132
RH
834 0, /* rightshift */
835 1, /* size (0 = byte, 1 = short, 2 = long) */
836 16, /* bitsize */
b34976b6 837 FALSE, /* pc_relative */
252b5132 838 0, /* bitpos */
7619e7c7
AM
839 complain_overflow_signed, /* complain_on_overflow */
840 ppc_elf_unhandled_reloc, /* special_function */
841 "R_PPC_DTPREL16", /* name */
b34976b6 842 FALSE, /* partial_inplace */
252b5132
RH
843 0, /* src_mask */
844 0xffff, /* dst_mask */
b34976b6 845 FALSE), /* pcrel_offset */
252b5132 846
7619e7c7
AM
847 /* Like DTPREL16, but no overflow. */
848 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH
849 0, /* rightshift */
850 1, /* size (0 = byte, 1 = short, 2 = long) */
851 16, /* bitsize */
b34976b6 852 FALSE, /* pc_relative */
252b5132 853 0, /* bitpos */
7619e7c7
AM
854 complain_overflow_dont, /* complain_on_overflow */
855 ppc_elf_unhandled_reloc, /* special_function */
856 "R_PPC_DTPREL16_LO", /* name */
b34976b6 857 FALSE, /* partial_inplace */
252b5132
RH
858 0, /* src_mask */
859 0xffff, /* dst_mask */
b34976b6 860 FALSE), /* pcrel_offset */
252b5132 861
7619e7c7
AM
862 /* Like DTPREL16_LO, but next higher group of 16 bits. */
863 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH
864 16, /* rightshift */
865 1, /* size (0 = byte, 1 = short, 2 = long) */
866 16, /* bitsize */
b34976b6 867 FALSE, /* pc_relative */
252b5132
RH
868 0, /* bitpos */
869 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
870 ppc_elf_unhandled_reloc, /* special_function */
871 "R_PPC_DTPREL16_HI", /* name */
b34976b6 872 FALSE, /* partial_inplace */
252b5132
RH
873 0, /* src_mask */
874 0xffff, /* dst_mask */
b34976b6 875 FALSE), /* pcrel_offset */
252b5132 876
7619e7c7
AM
877 /* Like DTPREL16_HI, but adjust for low 16 bits. */
878 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH
879 16, /* rightshift */
880 1, /* size (0 = byte, 1 = short, 2 = long) */
881 16, /* bitsize */
b34976b6 882 FALSE, /* pc_relative */
252b5132
RH
883 0, /* bitpos */
884 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
885 ppc_elf_unhandled_reloc, /* special_function */
886 "R_PPC_DTPREL16_HA", /* name */
b34976b6 887 FALSE, /* partial_inplace */
252b5132
RH
888 0, /* src_mask */
889 0xffff, /* dst_mask */
b34976b6 890 FALSE), /* pcrel_offset */
252b5132 891
7619e7c7
AM
892 /* Computes a tp-relative displacement, the difference between the value of
893 sym+add and the value of the thread pointer (r13). */
894 HOWTO (R_PPC_TPREL32,
895 0, /* rightshift */
896 2, /* size (0 = byte, 1 = short, 2 = long) */
897 32, /* bitsize */
898 FALSE, /* pc_relative */
899 0, /* bitpos */
900 complain_overflow_dont, /* complain_on_overflow */
901 ppc_elf_unhandled_reloc, /* special_function */
902 "R_PPC_TPREL32", /* name */
903 FALSE, /* partial_inplace */
904 0, /* src_mask */
905 0xffffffff, /* dst_mask */
906 FALSE), /* pcrel_offset */
907
908 /* A 16 bit tprel reloc. */
909 HOWTO (R_PPC_TPREL16,
252b5132
RH
910 0, /* rightshift */
911 1, /* size (0 = byte, 1 = short, 2 = long) */
912 16, /* bitsize */
b34976b6 913 FALSE, /* pc_relative */
252b5132 914 0, /* bitpos */
7619e7c7
AM
915 complain_overflow_signed, /* complain_on_overflow */
916 ppc_elf_unhandled_reloc, /* special_function */
917 "R_PPC_TPREL16", /* name */
b34976b6 918 FALSE, /* partial_inplace */
252b5132
RH
919 0, /* src_mask */
920 0xffff, /* dst_mask */
b34976b6 921 FALSE), /* pcrel_offset */
252b5132 922
7619e7c7
AM
923 /* Like TPREL16, but no overflow. */
924 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH
925 0, /* rightshift */
926 1, /* size (0 = byte, 1 = short, 2 = long) */
927 16, /* bitsize */
b34976b6 928 FALSE, /* pc_relative */
252b5132 929 0, /* bitpos */
7619e7c7
AM
930 complain_overflow_dont, /* complain_on_overflow */
931 ppc_elf_unhandled_reloc, /* special_function */
932 "R_PPC_TPREL16_LO", /* name */
b34976b6 933 FALSE, /* partial_inplace */
252b5132
RH
934 0, /* src_mask */
935 0xffff, /* dst_mask */
b34976b6 936 FALSE), /* pcrel_offset */
252b5132 937
7619e7c7
AM
938 /* Like TPREL16_LO, but next higher group of 16 bits. */
939 HOWTO (R_PPC_TPREL16_HI,
940 16, /* rightshift */
941 1, /* size (0 = byte, 1 = short, 2 = long) */
942 16, /* bitsize */
943 FALSE, /* pc_relative */
944 0, /* bitpos */
945 complain_overflow_dont, /* complain_on_overflow */
946 ppc_elf_unhandled_reloc, /* special_function */
947 "R_PPC_TPREL16_HI", /* name */
948 FALSE, /* partial_inplace */
949 0, /* src_mask */
950 0xffff, /* dst_mask */
951 FALSE), /* pcrel_offset */
952
953 /* Like TPREL16_HI, but adjust for low 16 bits. */
954 HOWTO (R_PPC_TPREL16_HA,
955 16, /* rightshift */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
957 16, /* bitsize */
958 FALSE, /* pc_relative */
959 0, /* bitpos */
960 complain_overflow_dont, /* complain_on_overflow */
961 ppc_elf_unhandled_reloc, /* special_function */
962 "R_PPC_TPREL16_HA", /* name */
963 FALSE, /* partial_inplace */
964 0, /* src_mask */
965 0xffff, /* dst_mask */
966 FALSE), /* pcrel_offset */
967
968 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
969 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
970 to the first entry. */
971 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH
972 0, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
b34976b6 975 FALSE, /* pc_relative */
252b5132
RH
976 0, /* bitpos */
977 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 980 FALSE, /* partial_inplace */
252b5132
RH
981 0, /* src_mask */
982 0xffff, /* dst_mask */
b34976b6 983 FALSE), /* pcrel_offset */
252b5132 984
7619e7c7
AM
985 /* Like GOT_TLSGD16, but no overflow. */
986 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 987 0, /* rightshift */
7619e7c7 988 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 989 16, /* bitsize */
b34976b6 990 FALSE, /* pc_relative */
252b5132 991 0, /* bitpos */
7619e7c7
AM
992 complain_overflow_dont, /* complain_on_overflow */
993 ppc_elf_unhandled_reloc, /* special_function */
994 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 995 FALSE, /* partial_inplace */
252b5132
RH
996 0, /* src_mask */
997 0xffff, /* dst_mask */
b34976b6 998 FALSE), /* pcrel_offset */
252b5132 999
7619e7c7
AM
1000 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1001 HOWTO (R_PPC_GOT_TLSGD16_HI,
1002 16, /* rightshift */
1003 1, /* size (0 = byte, 1 = short, 2 = long) */
1004 16, /* bitsize */
1005 FALSE, /* pc_relative */
1006 0, /* bitpos */
1007 complain_overflow_dont, /* complain_on_overflow */
1008 ppc_elf_unhandled_reloc, /* special_function */
1009 "R_PPC_GOT_TLSGD16_HI", /* name */
1010 FALSE, /* partial_inplace */
1011 0, /* src_mask */
1012 0xffff, /* dst_mask */
1013 FALSE), /* pcrel_offset */
252b5132 1014
7619e7c7
AM
1015 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1016 HOWTO (R_PPC_GOT_TLSGD16_HA,
1017 16, /* rightshift */
1018 1, /* size (0 = byte, 1 = short, 2 = long) */
1019 16, /* bitsize */
1020 FALSE, /* pc_relative */
1021 0, /* bitpos */
1022 complain_overflow_dont, /* complain_on_overflow */
1023 ppc_elf_unhandled_reloc, /* special_function */
1024 "R_PPC_GOT_TLSGD16_HA", /* name */
1025 FALSE, /* partial_inplace */
1026 0, /* src_mask */
1027 0xffff, /* dst_mask */
1028 FALSE), /* pcrel_offset */
1029
1030 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1031 with values (sym+add)@dtpmod and zero, and computes the offset to the
1032 first entry. */
1033 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH
1034 0, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 16, /* bitsize */
7619e7c7 1037 FALSE, /* pc_relative */
252b5132
RH
1038 0, /* bitpos */
1039 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1042 FALSE, /* partial_inplace */
252b5132
RH
1043 0, /* src_mask */
1044 0xffff, /* dst_mask */
b34976b6 1045 FALSE), /* pcrel_offset */
252b5132 1046
7619e7c7
AM
1047 /* Like GOT_TLSLD16, but no overflow. */
1048 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1049 0, /* rightshift */
7619e7c7
AM
1050 1, /* size (0 = byte, 1 = short, 2 = long) */
1051 16, /* bitsize */
b34976b6 1052 FALSE, /* pc_relative */
252b5132
RH
1053 0, /* bitpos */
1054 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1055 ppc_elf_unhandled_reloc, /* special_function */
1056 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1057 FALSE, /* partial_inplace */
252b5132 1058 0, /* src_mask */
7619e7c7 1059 0xffff, /* dst_mask */
b34976b6 1060 FALSE), /* pcrel_offset */
252b5132 1061
7619e7c7
AM
1062 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1063 HOWTO (R_PPC_GOT_TLSLD16_HI,
1064 16, /* rightshift */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 16, /* bitsize */
b34976b6 1067 FALSE, /* pc_relative */
252b5132
RH
1068 0, /* bitpos */
1069 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1070 ppc_elf_unhandled_reloc, /* special_function */
1071 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1072 FALSE, /* partial_inplace */
252b5132 1073 0, /* src_mask */
7619e7c7 1074 0xffff, /* dst_mask */
b34976b6 1075 FALSE), /* pcrel_offset */
252b5132 1076
7619e7c7
AM
1077 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1078 HOWTO (R_PPC_GOT_TLSLD16_HA,
1079 16, /* rightshift */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1081 16, /* bitsize */
1082 FALSE, /* pc_relative */
1083 0, /* bitpos */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 ppc_elf_unhandled_reloc, /* special_function */
1086 "R_PPC_GOT_TLSLD16_HA", /* name */
1087 FALSE, /* partial_inplace */
1088 0, /* src_mask */
1089 0xffff, /* dst_mask */
1090 FALSE), /* pcrel_offset */
1091
1092 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1093 the offset to the entry. */
1094 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH
1095 0, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1097 16, /* bitsize */
b34976b6 1098 FALSE, /* pc_relative */
252b5132
RH
1099 0, /* bitpos */
1100 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1101 ppc_elf_unhandled_reloc, /* special_function */
1102 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1103 FALSE, /* partial_inplace */
252b5132
RH
1104 0, /* src_mask */
1105 0xffff, /* dst_mask */
b34976b6 1106 FALSE), /* pcrel_offset */
252b5132 1107
7619e7c7
AM
1108 /* Like GOT_DTPREL16, but no overflow. */
1109 HOWTO (R_PPC_GOT_DTPREL16_LO,
1110 0, /* rightshift */
1111 1, /* size (0 = byte, 1 = short, 2 = long) */
1112 16, /* bitsize */
1113 FALSE, /* pc_relative */
1114 0, /* bitpos */
1115 complain_overflow_dont, /* complain_on_overflow */
1116 ppc_elf_unhandled_reloc, /* special_function */
1117 "R_PPC_GOT_DTPREL16_LO", /* name */
1118 FALSE, /* partial_inplace */
1119 0, /* src_mask */
1120 0xffff, /* dst_mask */
1121 FALSE), /* pcrel_offset */
252b5132 1122
7619e7c7
AM
1123 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1124 HOWTO (R_PPC_GOT_DTPREL16_HI,
1125 16, /* rightshift */
1126 1, /* size (0 = byte, 1 = short, 2 = long) */
1127 16, /* bitsize */
1128 FALSE, /* pc_relative */
1129 0, /* bitpos */
1130 complain_overflow_dont, /* complain_on_overflow */
1131 ppc_elf_unhandled_reloc, /* special_function */
1132 "R_PPC_GOT_DTPREL16_HI", /* name */
1133 FALSE, /* partial_inplace */
1134 0, /* src_mask */
1135 0xffff, /* dst_mask */
1136 FALSE), /* pcrel_offset */
252b5132 1137
7619e7c7
AM
1138 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1139 HOWTO (R_PPC_GOT_DTPREL16_HA,
1140 16, /* rightshift */
1141 1, /* size (0 = byte, 1 = short, 2 = long) */
1142 16, /* bitsize */
1143 FALSE, /* pc_relative */
1144 0, /* bitpos */
1145 complain_overflow_dont, /* complain_on_overflow */
1146 ppc_elf_unhandled_reloc, /* special_function */
1147 "R_PPC_GOT_DTPREL16_HA", /* name */
1148 FALSE, /* partial_inplace */
1149 0, /* src_mask */
1150 0xffff, /* dst_mask */
1151 FALSE), /* pcrel_offset */
c3668558 1152
7619e7c7
AM
1153 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1154 offset to the entry. */
1155 HOWTO (R_PPC_GOT_TPREL16,
1156 0, /* rightshift */
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1158 16, /* bitsize */
1159 FALSE, /* pc_relative */
1160 0, /* bitpos */
1161 complain_overflow_signed, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc, /* special_function */
1163 "R_PPC_GOT_TPREL16", /* name */
1164 FALSE, /* partial_inplace */
1165 0, /* src_mask */
1166 0xffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1168
1169 /* Like GOT_TPREL16, but no overflow. */
1170 HOWTO (R_PPC_GOT_TPREL16_LO,
1171 0, /* rightshift */
1172 1, /* size (0 = byte, 1 = short, 2 = long) */
1173 16, /* bitsize */
1174 FALSE, /* pc_relative */
1175 0, /* bitpos */
1176 complain_overflow_dont, /* complain_on_overflow */
1177 ppc_elf_unhandled_reloc, /* special_function */
1178 "R_PPC_GOT_TPREL16_LO", /* name */
1179 FALSE, /* partial_inplace */
1180 0, /* src_mask */
1181 0xffff, /* dst_mask */
1182 FALSE), /* pcrel_offset */
1183
1184 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1185 HOWTO (R_PPC_GOT_TPREL16_HI,
1186 16, /* rightshift */
1187 1, /* size (0 = byte, 1 = short, 2 = long) */
1188 16, /* bitsize */
1189 FALSE, /* pc_relative */
1190 0, /* bitpos */
1191 complain_overflow_dont, /* complain_on_overflow */
1192 ppc_elf_unhandled_reloc, /* special_function */
1193 "R_PPC_GOT_TPREL16_HI", /* name */
1194 FALSE, /* partial_inplace */
1195 0, /* src_mask */
1196 0xffff, /* dst_mask */
1197 FALSE), /* pcrel_offset */
1198
1199 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1200 HOWTO (R_PPC_GOT_TPREL16_HA,
1201 16, /* rightshift */
1202 1, /* size (0 = byte, 1 = short, 2 = long) */
1203 16, /* bitsize */
1204 FALSE, /* pc_relative */
1205 0, /* bitpos */
1206 complain_overflow_dont, /* complain_on_overflow */
1207 ppc_elf_unhandled_reloc, /* special_function */
1208 "R_PPC_GOT_TPREL16_HA", /* name */
1209 FALSE, /* partial_inplace */
1210 0, /* src_mask */
1211 0xffff, /* dst_mask */
1212 FALSE), /* pcrel_offset */
1213
1214 /* The remaining relocs are from the Embedded ELF ABI, and are not
1215 in the SVR4 ELF ABI. */
1216
1217 /* 32 bit value resulting from the addend minus the symbol. */
1218 HOWTO (R_PPC_EMB_NADDR32, /* type */
1219 0, /* rightshift */
1220 2, /* size (0 = byte, 1 = short, 2 = long) */
1221 32, /* bitsize */
1222 FALSE, /* pc_relative */
1223 0, /* bitpos */
1224 complain_overflow_bitfield, /* complain_on_overflow */
1225 bfd_elf_generic_reloc, /* special_function */
1226 "R_PPC_EMB_NADDR32", /* name */
1227 FALSE, /* partial_inplace */
1228 0, /* src_mask */
1229 0xffffffff, /* dst_mask */
1230 FALSE), /* pcrel_offset */
1231
1232 /* 16 bit value resulting from the addend minus the symbol. */
1233 HOWTO (R_PPC_EMB_NADDR16, /* type */
1234 0, /* rightshift */
1235 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 16, /* bitsize */
1237 FALSE, /* pc_relative */
1238 0, /* bitpos */
1239 complain_overflow_bitfield, /* complain_on_overflow */
1240 bfd_elf_generic_reloc, /* special_function */
1241 "R_PPC_EMB_NADDR16", /* name */
1242 FALSE, /* partial_inplace */
1243 0, /* src_mask */
1244 0xffff, /* dst_mask */
1245 FALSE), /* pcrel_offset */
1246
1247 /* 16 bit value resulting from the addend minus the symbol. */
1248 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1249 0, /* rightshift */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1251 16, /* bitsize */
1252 FALSE, /* pc_relative */
1253 0, /* bitpos */
1254 complain_overflow_dont,/* complain_on_overflow */
1255 bfd_elf_generic_reloc, /* special_function */
1256 "R_PPC_EMB_ADDR16_LO", /* name */
1257 FALSE, /* partial_inplace */
1258 0, /* src_mask */
1259 0xffff, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1261
1262 /* The high order 16 bits of the addend minus the symbol. */
1263 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1264 16, /* rightshift */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1266 16, /* bitsize */
1267 FALSE, /* pc_relative */
1268 0, /* bitpos */
1269 complain_overflow_dont, /* complain_on_overflow */
1270 bfd_elf_generic_reloc, /* special_function */
1271 "R_PPC_EMB_NADDR16_HI", /* name */
1272 FALSE, /* partial_inplace */
1273 0, /* src_mask */
1274 0xffff, /* dst_mask */
1275 FALSE), /* pcrel_offset */
1276
1277 /* The high order 16 bits of the result of the addend minus the address,
1278 plus 1 if the contents of the low 16 bits, treated as a signed number,
1279 is negative. */
1280 HOWTO (R_PPC_EMB_NADDR16_HA, /* 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 */
25dbc73a
AM
1287 ppc_elf_addr16_ha_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HA", /* name */
1289 FALSE, /* partial_inplace */
1290 0, /* src_mask */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 /* 16 bit value resulting from allocating a 4 byte word to hold an
1295 address in the .sdata section, and returning the offset from
1296 _SDA_BASE_ for that relocation. */
1297 HOWTO (R_PPC_EMB_SDAI16, /* type */
1298 0, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 16, /* bitsize */
1301 FALSE, /* pc_relative */
1302 0, /* bitpos */
1303 complain_overflow_bitfield, /* complain_on_overflow */
1304 bfd_elf_generic_reloc, /* special_function */
1305 "R_PPC_EMB_SDAI16", /* 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 .sdata2 section, and returning the offset from
1313 _SDA2_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1315 0, /* rightshift */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 16, /* bitsize */
1318 FALSE, /* pc_relative */
1319 0, /* bitpos */
1320 complain_overflow_bitfield, /* complain_on_overflow */
1321 bfd_elf_generic_reloc, /* special_function */
1322 "R_PPC_EMB_SDA2I16", /* name */
1323 FALSE, /* partial_inplace */
1324 0, /* src_mask */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1327
1328 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1329 small data items. */
1330 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1331 0, /* rightshift */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1333 16, /* bitsize */
1334 FALSE, /* pc_relative */
1335 0, /* bitpos */
1336 complain_overflow_signed, /* complain_on_overflow */
1337 bfd_elf_generic_reloc, /* special_function */
1338 "R_PPC_EMB_SDA2REL", /* name */
1339 FALSE, /* partial_inplace */
1340 0, /* src_mask */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1343
1344 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1345 signed offset from the appropriate base, and filling in the register
1346 field with the appropriate register (0, 2, or 13). */
1347 HOWTO (R_PPC_EMB_SDA21, /* type */
1348 0, /* rightshift */
1349 2, /* 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_SDA21", /* name */
1356 FALSE, /* partial_inplace */
1357 0, /* src_mask */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* Relocation not handled: R_PPC_EMB_MRKREF */
1362 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1363 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1364 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1365 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1366 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1367
1368 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1369 in the 16 bit signed offset from the appropriate base, and filling in the
1370 register field with the appropriate register (0, 2, or 13). */
1371 HOWTO (R_PPC_EMB_RELSDA, /* type */
1372 0, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1374 16, /* bitsize */
1375 TRUE, /* pc_relative */
1376 0, /* bitpos */
1377 complain_overflow_signed, /* complain_on_overflow */
1378 bfd_elf_generic_reloc, /* special_function */
1379 "R_PPC_EMB_RELSDA", /* name */
1380 FALSE, /* partial_inplace */
1381 0, /* src_mask */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1384
e054468f
AM
1385 HOWTO (R_PPC_IRELATIVE, /* type */
1386 0, /* rightshift */
1387 2, /* size (0 = byte, 1 = short, 2 = long) */
1388 32, /* bitsize */
1389 FALSE, /* pc_relative */
1390 0, /* bitpos */
1391 complain_overflow_bitfield, /* complain_on_overflow */
1392 bfd_elf_generic_reloc, /* special_function */
1393 "R_PPC_IRELATIVE", /* name */
1394 FALSE, /* partial_inplace */
1395 0, /* src_mask */
1396 0xffffffff, /* dst_mask */
1397 FALSE), /* pcrel_offset */
1398
d7128ce4
AM
1399 /* A 16 bit relative relocation. */
1400 HOWTO (R_PPC_REL16, /* type */
1401 0, /* rightshift */
1402 1, /* size (0 = byte, 1 = short, 2 = long) */
1403 16, /* bitsize */
1404 TRUE, /* pc_relative */
1405 0, /* bitpos */
1406 complain_overflow_bitfield, /* complain_on_overflow */
1407 bfd_elf_generic_reloc, /* special_function */
1408 "R_PPC_REL16", /* name */
1409 FALSE, /* partial_inplace */
1410 0, /* src_mask */
1411 0xffff, /* dst_mask */
1412 TRUE), /* pcrel_offset */
1413
1414 /* A 16 bit relative relocation without overflow. */
1415 HOWTO (R_PPC_REL16_LO, /* type */
1416 0, /* rightshift */
1417 1, /* size (0 = byte, 1 = short, 2 = long) */
1418 16, /* bitsize */
1419 TRUE, /* pc_relative */
1420 0, /* bitpos */
1421 complain_overflow_dont,/* complain_on_overflow */
1422 bfd_elf_generic_reloc, /* special_function */
1423 "R_PPC_REL16_LO", /* name */
1424 FALSE, /* partial_inplace */
1425 0, /* src_mask */
1426 0xffff, /* dst_mask */
1427 TRUE), /* pcrel_offset */
1428
1429 /* The high order 16 bits of a relative address. */
1430 HOWTO (R_PPC_REL16_HI, /* type */
1431 16, /* rightshift */
1432 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 16, /* bitsize */
1434 TRUE, /* pc_relative */
1435 0, /* bitpos */
1436 complain_overflow_dont, /* complain_on_overflow */
1437 bfd_elf_generic_reloc, /* special_function */
1438 "R_PPC_REL16_HI", /* name */
1439 FALSE, /* partial_inplace */
1440 0, /* src_mask */
1441 0xffff, /* dst_mask */
1442 TRUE), /* pcrel_offset */
1443
1444 /* The high order 16 bits of a relative address, plus 1 if the contents of
1445 the low 16 bits, treated as a signed number, is negative. */
1446 HOWTO (R_PPC_REL16_HA, /* type */
1447 16, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1449 16, /* bitsize */
1450 TRUE, /* pc_relative */
1451 0, /* bitpos */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc_elf_addr16_ha_reloc, /* special_function */
1454 "R_PPC_REL16_HA", /* name */
1455 FALSE, /* partial_inplace */
1456 0, /* src_mask */
1457 0xffff, /* dst_mask */
1458 TRUE), /* pcrel_offset */
1459
25dbc73a
AM
1460 /* GNU extension to record C++ vtable hierarchy. */
1461 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1462 0, /* rightshift */
1463 0, /* size (0 = byte, 1 = short, 2 = long) */
1464 0, /* bitsize */
1465 FALSE, /* pc_relative */
1466 0, /* bitpos */
1467 complain_overflow_dont, /* complain_on_overflow */
1468 NULL, /* special_function */
1469 "R_PPC_GNU_VTINHERIT", /* name */
1470 FALSE, /* partial_inplace */
1471 0, /* src_mask */
1472 0, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1474
1475 /* GNU extension to record C++ vtable member usage. */
1476 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1477 0, /* rightshift */
1478 0, /* size (0 = byte, 1 = short, 2 = long) */
1479 0, /* bitsize */
1480 FALSE, /* pc_relative */
1481 0, /* bitpos */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 NULL, /* special_function */
1484 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM
1485 FALSE, /* partial_inplace */
1486 0, /* src_mask */
25dbc73a 1487 0, /* dst_mask */
7619e7c7
AM
1488 FALSE), /* pcrel_offset */
1489
25dbc73a
AM
1490 /* Phony reloc to handle AIX style TOC entries. */
1491 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM
1492 0, /* rightshift */
1493 1, /* size (0 = byte, 1 = short, 2 = long) */
1494 16, /* bitsize */
1495 FALSE, /* pc_relative */
1496 0, /* bitpos */
25dbc73a 1497 complain_overflow_signed, /* complain_on_overflow */
7619e7c7 1498 bfd_elf_generic_reloc, /* special_function */
25dbc73a 1499 "R_PPC_TOC16", /* name */
7619e7c7
AM
1500 FALSE, /* partial_inplace */
1501 0, /* src_mask */
1502 0xffff, /* dst_mask */
1503 FALSE), /* pcrel_offset */
25dbc73a
AM
1504};
1505\f
1506/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1507
1508static void
1509ppc_elf_howto_init (void)
1510{
1511 unsigned int i, type;
1512
1513 for (i = 0;
1514 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1515 i++)
1516 {
1517 type = ppc_elf_howto_raw[i].type;
1518 if (type >= (sizeof (ppc_elf_howto_table)
1519 / sizeof (ppc_elf_howto_table[0])))
1520 abort ();
1521 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1522 }
1523}
1524
1525static reloc_howto_type *
1526ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1527 bfd_reloc_code_real_type code)
1528{
1529 enum elf_ppc_reloc_type r;
1530
1531 /* Initialize howto table if not already done. */
1532 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1533 ppc_elf_howto_init ();
1534
1535 switch (code)
1536 {
1537 default:
1538 return NULL;
1539
1540 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1541 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1542 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1543 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1544 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1545 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1546 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1547 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1548 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1549 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1550 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1551 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1552 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1553 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1554 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1555 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1556 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1557 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1558 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1559 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1560 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1561 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1562 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1563 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1564 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1565 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1566 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1567 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1568 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1569 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1570 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1571 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1572 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1573 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1574 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1575 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
727fc41e
AM
1576 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1577 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
25dbc73a
AM
1578 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1579 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1580 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1581 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1582 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1583 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1584 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1585 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1586 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1587 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1588 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1589 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1590 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1591 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1592 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1593 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1594 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1595 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1596 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1597 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1598 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1599 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1600 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1601 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1602 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1603 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1604 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1605 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1606 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1607 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1608 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1609 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1610 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1611 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1612 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1613 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1614 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1615 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1616 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1617 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1618 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1619 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1620 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
d7128ce4
AM
1621 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1622 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1623 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1624 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
25dbc73a
AM
1625 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1626 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1627 }
1628
1629 return ppc_elf_howto_table[r];
1630};
1631
157090f7
AM
1632static reloc_howto_type *
1633ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1634 const char *r_name)
1635{
1636 unsigned int i;
1637
1638 for (i = 0;
1639 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1640 i++)
1641 if (ppc_elf_howto_raw[i].name != NULL
1642 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1643 return &ppc_elf_howto_raw[i];
1644
1645 return NULL;
1646}
1647
25dbc73a
AM
1648/* Set the howto pointer for a PowerPC ELF reloc. */
1649
1650static void
1651ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1652 arelent *cache_ptr,
1653 Elf_Internal_Rela *dst)
1654{
1655 /* Initialize howto table if not already done. */
1656 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1657 ppc_elf_howto_init ();
1658
1659 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1660 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
375de94a
AM
1661
1662 /* Just because the above assert didn't trigger doesn't mean that
1663 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1664 if (!cache_ptr->howto)
1665 {
1666 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1667 abfd, ELF32_R_TYPE (dst->r_info));
1668 bfd_set_error (bfd_error_bad_value);
1669
1670 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1671 }
25dbc73a
AM
1672}
1673
d7128ce4 1674/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM
1675
1676static bfd_reloc_status_type
1677ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1678 arelent *reloc_entry,
1679 asymbol *symbol,
1680 void *data ATTRIBUTE_UNUSED,
1681 asection *input_section,
1682 bfd *output_bfd,
1683 char **error_message ATTRIBUTE_UNUSED)
1684{
1685 bfd_vma relocation;
1686
1687 if (output_bfd != NULL)
1688 {
1689 reloc_entry->address += input_section->output_offset;
1690 return bfd_reloc_ok;
1691 }
1692
1693 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1694 return bfd_reloc_outofrange;
1695
1696 if (bfd_is_com_section (symbol->section))
1697 relocation = 0;
1698 else
1699 relocation = symbol->value;
1700
1701 relocation += symbol->section->output_section->vma;
1702 relocation += symbol->section->output_offset;
1703 relocation += reloc_entry->addend;
d7128ce4
AM
1704 if (reloc_entry->howto->pc_relative)
1705 relocation -= reloc_entry->address;
25dbc73a
AM
1706
1707 reloc_entry->addend += (relocation & 0x8000) << 1;
1708
1709 return bfd_reloc_continue;
1710}
1711
1712static bfd_reloc_status_type
1713ppc_elf_unhandled_reloc (bfd *abfd,
1714 arelent *reloc_entry,
1715 asymbol *symbol,
1716 void *data,
1717 asection *input_section,
1718 bfd *output_bfd,
1719 char **error_message)
1720{
1721 /* If this is a relocatable link (output_bfd test tells us), just
1722 call the generic function. Any adjustment will be done at final
1723 link time. */
1724 if (output_bfd != NULL)
1725 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1726 input_section, output_bfd, error_message);
1727
1728 if (error_message != NULL)
1729 {
1730 static char buf[60];
1731 sprintf (buf, _("generic linker can't handle %s"),
1732 reloc_entry->howto->name);
1733 *error_message = buf;
1734 }
1735 return bfd_reloc_dangerous;
1736}
1737\f
1738/* Sections created by the linker. */
1739
1740typedef struct elf_linker_section
1741{
c9a2f333 1742 /* Pointer to the bfd section. */
25dbc73a 1743 asection *section;
c9a2f333
AM
1744 /* Section name. */
1745 const char *name;
1746 /* Associated bss section name. */
1747 const char *bss_name;
1748 /* Associated symbol name. */
1749 const char *sym_name;
046183de
AM
1750 /* Associated symbol. */
1751 struct elf_link_hash_entry *sym;
25dbc73a
AM
1752} elf_linker_section_t;
1753
1754/* Linked list of allocated pointer entries. This hangs off of the
1755 symbol lists, and provides allows us to return different pointers,
1756 based on different addend's. */
1757
1758typedef struct elf_linker_section_pointers
1759{
1760 /* next allocated pointer for this symbol */
1761 struct elf_linker_section_pointers *next;
1762 /* offset of pointer from beginning of section */
1763 bfd_vma offset;
1764 /* addend used */
1765 bfd_vma addend;
1766 /* which linker section this is */
1767 elf_linker_section_t *lsect;
25dbc73a
AM
1768} elf_linker_section_pointers_t;
1769
1770struct ppc_elf_obj_tdata
1771{
1772 struct elf_obj_tdata elf;
1773
1774 /* A mapping from local symbols to offsets into the various linker
1775 sections added. This is index by the symbol index. */
1776 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM
1777
1778 /* Flags used to auto-detect plt type. */
1779 unsigned int makes_plt_call : 1;
1780 unsigned int has_rel16 : 1;
25dbc73a
AM
1781};
1782
1783#define ppc_elf_tdata(bfd) \
1784 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 1785
25dbc73a
AM
1786#define elf_local_ptr_offsets(bfd) \
1787 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 1788
0c8d6e5c
AM
1789#define is_ppc_elf(bfd) \
1790 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1791 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1792
25dbc73a 1793/* Override the generic function because we store some extras. */
7619e7c7 1794
25dbc73a
AM
1795static bfd_boolean
1796ppc_elf_mkobject (bfd *abfd)
1797{
0ffa91dd
NC
1798 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1799 PPC32_ELF_TDATA);
25dbc73a 1800}
7619e7c7 1801
25dbc73a
AM
1802/* Fix bad default arch selected for a 32 bit input bfd when the
1803 default is 64 bit. */
7619e7c7 1804
25dbc73a
AM
1805static bfd_boolean
1806ppc_elf_object_p (bfd *abfd)
1807{
1808 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1809 {
1810 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 1811
25dbc73a
AM
1812 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1813 {
1814 /* Relies on arch after 64 bit default being 32 bit default. */
1815 abfd->arch_info = abfd->arch_info->next;
1816 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1817 }
1818 }
1819 return TRUE;
1820}
7619e7c7 1821
25dbc73a 1822/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 1823
25dbc73a
AM
1824static bfd_boolean
1825ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1826{
1827 BFD_ASSERT (!elf_flags_init (abfd)
1828 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 1829
25dbc73a
AM
1830 elf_elfheader (abfd)->e_flags = flags;
1831 elf_flags_init (abfd) = TRUE;
1832 return TRUE;
1833}
1834
25dbc73a 1835/* Support for core dump NOTE sections. */
deaaf2f3 1836
b34976b6 1837static bfd_boolean
25dbc73a 1838ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 1839{
25dbc73a
AM
1840 int offset;
1841 unsigned int size;
252b5132 1842
25dbc73a
AM
1843 switch (note->descsz)
1844 {
1845 default:
1846 return FALSE;
252b5132 1847
25dbc73a
AM
1848 case 268: /* Linux/PPC. */
1849 /* pr_cursig */
1850 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 1851
25dbc73a
AM
1852 /* pr_pid */
1853 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 1854
25dbc73a
AM
1855 /* pr_reg */
1856 offset = 72;
1857 size = 192;
deaaf2f3 1858
25dbc73a
AM
1859 break;
1860 }
deaaf2f3 1861
25dbc73a
AM
1862 /* Make a ".reg/999" section. */
1863 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1864 size, note->descpos + offset);
1865}
252b5132 1866
25dbc73a
AM
1867static bfd_boolean
1868ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1869{
1870 switch (note->descsz)
deaaf2f3 1871 {
25dbc73a
AM
1872 default:
1873 return FALSE;
deaaf2f3 1874
25dbc73a
AM
1875 case 128: /* Linux/PPC elf_prpsinfo. */
1876 elf_tdata (abfd)->core_program
1877 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1878 elf_tdata (abfd)->core_command
1879 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1880 }
9abc968f 1881
25dbc73a
AM
1882 /* Note that for some reason, a spurious space is tacked
1883 onto the end of the args in some (at least one anyway)
1884 implementations, so strip it off if it exists. */
70bccea4 1885
25dbc73a
AM
1886 {
1887 char *command = elf_tdata (abfd)->core_command;
1888 int n = strlen (command);
70bccea4 1889
25dbc73a
AM
1890 if (0 < n && command[n - 1] == ' ')
1891 command[n - 1] = '\0';
1892 }
deaaf2f3 1893
25dbc73a
AM
1894 return TRUE;
1895}
deaaf2f3 1896
183e98be
AM
1897static char *
1898ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1899{
1900 switch (note_type)
1901 {
1902 default:
1903 return NULL;
1904
1905 case NT_PRPSINFO:
1906 {
1907 char data[128];
1908 va_list ap;
1909
1910 va_start (ap, note_type);
1911 memset (data, 0, 32);
1912 strncpy (data + 32, va_arg (ap, const char *), 16);
1913 strncpy (data + 48, va_arg (ap, const char *), 80);
1914 va_end (ap);
1915 return elfcore_write_note (abfd, buf, bufsiz,
1916 "CORE", note_type, data, sizeof (data));
1917 }
1918
1919 case NT_PRSTATUS:
1920 {
1921 char data[268];
1922 va_list ap;
1923 long pid;
1924 int cursig;
1925 const void *greg;
1926
1927 va_start (ap, note_type);
1928 memset (data, 0, 72);
1929 pid = va_arg (ap, long);
1930 bfd_put_32 (abfd, pid, data + 24);
1931 cursig = va_arg (ap, int);
1932 bfd_put_16 (abfd, cursig, data + 12);
1933 greg = va_arg (ap, const void *);
1934 memcpy (data + 72, greg, 192);
1935 memset (data + 264, 0, 4);
1936 va_end (ap);
1937 return elfcore_write_note (abfd, buf, bufsiz,
1938 "CORE", note_type, data, sizeof (data));
1939 }
1940 }
1941}
1942
25dbc73a
AM
1943/* Return address for Ith PLT stub in section PLT, for relocation REL
1944 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 1945
25dbc73a
AM
1946static bfd_vma
1947ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1948 const asection *plt ATTRIBUTE_UNUSED,
1949 const arelent *rel)
1950{
1951 return rel->address;
1952}
deaaf2f3 1953
25dbc73a 1954/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
1955 is called when bfd_section_from_shdr finds a section with an unknown
1956 type. */
deaaf2f3 1957
25dbc73a 1958static bfd_boolean
6dc132d9
L
1959ppc_elf_section_from_shdr (bfd *abfd,
1960 Elf_Internal_Shdr *hdr,
1961 const char *name,
1962 int shindex)
25dbc73a
AM
1963{
1964 asection *newsect;
1965 flagword flags;
d1c6de6f 1966
6dc132d9 1967 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 1968 return FALSE;
deaaf2f3 1969
25dbc73a
AM
1970 newsect = hdr->bfd_section;
1971 flags = bfd_get_section_flags (abfd, newsect);
1972 if (hdr->sh_flags & SHF_EXCLUDE)
1973 flags |= SEC_EXCLUDE;
9abc968f 1974
25dbc73a
AM
1975 if (hdr->sh_type == SHT_ORDERED)
1976 flags |= SEC_SORT_ENTRIES;
d1c6de6f 1977
25dbc73a
AM
1978 bfd_set_section_flags (abfd, newsect, flags);
1979 return TRUE;
1980}
1981
1982/* Set up any other section flags and such that may be necessary. */
1983
1984static bfd_boolean
1985ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1986 Elf_Internal_Shdr *shdr,
1987 asection *asect)
1988{
d30e8e7c 1989 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
25dbc73a
AM
1990 shdr->sh_flags |= SHF_EXCLUDE;
1991
1992 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1993 shdr->sh_type = SHT_ORDERED;
1994
1995 return TRUE;
1996}
1997
1998/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1999 need to bump up the number of section headers. */
2000
2001static int
a6b96beb
AM
2002ppc_elf_additional_program_headers (bfd *abfd,
2003 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM
2004{
2005 asection *s;
2006 int ret = 0;
d1c6de6f 2007
25dbc73a
AM
2008 s = bfd_get_section_by_name (abfd, ".sbss2");
2009 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2010 ++ret;
d1c6de6f 2011
25dbc73a
AM
2012 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2013 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2014 ++ret;
deaaf2f3 2015
25dbc73a
AM
2016 return ret;
2017}
deaaf2f3 2018
25dbc73a
AM
2019/* Add extra PPC sections -- Note, for now, make .sbss2 and
2020 .PPC.EMB.sbss0 a normal section, and not a bss section so
2021 that the linker doesn't crater when trying to make more than
2022 2 sections. */
e656e369 2023
b35d266b 2024static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 2025{
0112cd26
NC
2026 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2027 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2028 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2029 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2030 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2031 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2032 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2033 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2034 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2035 { NULL, 0, 0, 0, 0 }
7f4d3958
L
2036};
2037
551b43fd
AM
2038/* This is what we want for new plt/got. */
2039static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 2040 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM
2041
2042static const struct bfd_elf_special_section *
2043ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 2044{
b35d266b 2045 const struct bfd_elf_special_section *ssect;
551b43fd
AM
2046
2047 /* See if this is one of the special sections. */
2048 if (sec->name == NULL)
2049 return NULL;
2050
2051 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2052 sec->use_rela_p);
2053 if (ssect != NULL)
2054 {
2055 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2056 ssect = &ppc_alt_plt;
2057 return ssect;
2058 }
2059
2060 return _bfd_elf_get_sec_type_attr (abfd, sec);
2061}
25dbc73a
AM
2062\f
2063/* Very simple linked list structure for recording apuinfo values. */
2064typedef struct apuinfo_list
2065{
2066 struct apuinfo_list *next;
2067 unsigned long value;
2068}
2069apuinfo_list;
e656e369 2070
25dbc73a 2071static apuinfo_list *head;
deaaf2f3 2072
deaaf2f3 2073
25dbc73a
AM
2074static void
2075apuinfo_list_init (void)
2076{
2077 head = NULL;
2078}
9abc968f 2079
25dbc73a
AM
2080static void
2081apuinfo_list_add (unsigned long value)
2082{
2083 apuinfo_list *entry = head;
deaaf2f3 2084
25dbc73a
AM
2085 while (entry != NULL)
2086 {
2087 if (entry->value == value)
2088 return;
2089 entry = entry->next;
2090 }
b4a38de6 2091
25dbc73a
AM
2092 entry = bfd_malloc (sizeof (* entry));
2093 if (entry == NULL)
2094 return;
e656e369 2095
25dbc73a
AM
2096 entry->value = value;
2097 entry->next = head;
2098 head = entry;
2099}
9abc968f 2100
25dbc73a
AM
2101static unsigned
2102apuinfo_list_length (void)
2103{
2104 apuinfo_list *entry;
2105 unsigned long count;
9abc968f 2106
25dbc73a
AM
2107 for (entry = head, count = 0;
2108 entry;
2109 entry = entry->next)
2110 ++ count;
e656e369 2111
25dbc73a
AM
2112 return count;
2113}
eea6121a 2114
25dbc73a
AM
2115static inline unsigned long
2116apuinfo_list_element (unsigned long number)
2117{
2118 apuinfo_list * entry;
e656e369 2119
25dbc73a
AM
2120 for (entry = head;
2121 entry && number --;
2122 entry = entry->next)
2123 ;
252b5132 2124
25dbc73a
AM
2125 return entry ? entry->value : 0;
2126}
2127
2128static void
2129apuinfo_list_finish (void)
2130{
2131 apuinfo_list *entry;
2132
2133 for (entry = head; entry;)
252b5132 2134 {
25dbc73a
AM
2135 apuinfo_list *next = entry->next;
2136 free (entry);
2137 entry = next;
2138 }
9abc968f 2139
25dbc73a
AM
2140 head = NULL;
2141}
9abc968f 2142
25dbc73a
AM
2143#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2144#define APUINFO_LABEL "APUinfo"
9abc968f 2145
25dbc73a
AM
2146/* Scan the input BFDs and create a linked list of
2147 the APUinfo values that will need to be emitted. */
9abc968f 2148
25dbc73a
AM
2149static void
2150ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2151{
2152 bfd *ibfd;
2153 asection *asec;
2154 char *buffer;
2155 unsigned num_input_sections;
2156 bfd_size_type output_section_size;
2157 unsigned i;
2158 unsigned num_entries;
2159 unsigned long offset;
2160 unsigned long length;
2161 const char *error_message = NULL;
9abc968f 2162
25dbc73a
AM
2163 if (link_info == NULL)
2164 return;
9abc968f 2165
25dbc73a
AM
2166 /* Scan the input bfds, looking for apuinfo sections. */
2167 num_input_sections = 0;
2168 output_section_size = 0;
252b5132 2169
25dbc73a 2170 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2171 {
25dbc73a
AM
2172 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2173 if (asec)
252b5132 2174 {
25dbc73a
AM
2175 ++ num_input_sections;
2176 output_section_size += asec->size;
252b5132 2177 }
252b5132
RH
2178 }
2179
25dbc73a
AM
2180 /* We need at least one input sections
2181 in order to make merging worthwhile. */
2182 if (num_input_sections < 1)
2183 return;
deaaf2f3 2184
25dbc73a
AM
2185 /* Just make sure that the output section exists as well. */
2186 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2187 if (asec == NULL)
2188 return;
252b5132 2189
25dbc73a
AM
2190 /* Allocate a buffer for the contents of the input sections. */
2191 buffer = bfd_malloc (output_section_size);
2192 if (buffer == NULL)
2193 return;
252b5132 2194
25dbc73a
AM
2195 offset = 0;
2196 apuinfo_list_init ();
252b5132 2197
25dbc73a
AM
2198 /* Read in the input sections contents. */
2199 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2200 {
25dbc73a
AM
2201 unsigned long datum;
2202 char *ptr;
252b5132 2203
25dbc73a
AM
2204 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2205 if (asec == NULL)
2206 continue;
252b5132 2207
25dbc73a
AM
2208 length = asec->size;
2209 if (length < 24)
2210 {
2211 error_message = _("corrupt or empty %s section in %B");
2212 goto fail;
2213 }
252b5132 2214
25dbc73a
AM
2215 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2216 || (bfd_bread (buffer + offset, length, ibfd) != length))
2217 {
2218 error_message = _("unable to read in %s section from %B");
2219 goto fail;
2220 }
252b5132 2221
25dbc73a
AM
2222 /* Process the contents of the section. */
2223 ptr = buffer + offset;
2224 error_message = _("corrupt %s section in %B");
252b5132 2225
25dbc73a
AM
2226 /* Verify the contents of the header. Note - we have to
2227 extract the values this way in order to allow for a
2228 host whose endian-ness is different from the target. */
2229 datum = bfd_get_32 (ibfd, ptr);
2230 if (datum != sizeof APUINFO_LABEL)
2231 goto fail;
252b5132 2232
25dbc73a
AM
2233 datum = bfd_get_32 (ibfd, ptr + 8);
2234 if (datum != 0x2)
2235 goto fail;
252b5132 2236
25dbc73a
AM
2237 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2238 goto fail;
252b5132 2239
25dbc73a
AM
2240 /* Get the number of bytes used for apuinfo entries. */
2241 datum = bfd_get_32 (ibfd, ptr + 4);
2242 if (datum + 20 != length)
2243 goto fail;
2244
2245 /* Make sure that we do not run off the end of the section. */
2246 if (offset + length > output_section_size)
2247 goto fail;
2248
2249 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2250 for (i = 0; i < datum; i += 4)
2251 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2252
2253 /* Update the offset. */
2254 offset += length;
252b5132
RH
2255 }
2256
25dbc73a 2257 error_message = NULL;
252b5132 2258
25dbc73a
AM
2259 /* Compute the size of the output section. */
2260 num_entries = apuinfo_list_length ();
2261 output_section_size = 20 + num_entries * 4;
252b5132 2262
25dbc73a
AM
2263 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2264
2265 if (! bfd_set_section_size (abfd, asec, output_section_size))
2266 ibfd = abfd,
2267 error_message = _("warning: unable to set size of %s section in %B");
2268
2269 fail:
2270 free (buffer);
2271
2272 if (error_message)
2273 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2274}
252b5132 2275
25dbc73a
AM
2276/* Prevent the output section from accumulating the input sections'
2277 contents. We have already stored this in our linked list structure. */
252b5132 2278
25dbc73a
AM
2279static bfd_boolean
2280ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2281 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM
2282 asection *asec,
2283 bfd_byte *contents ATTRIBUTE_UNUSED)
2284{
2285 return (apuinfo_list_length ()
2286 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
252b5132
RH
2287}
2288
25dbc73a
AM
2289/* Finally we can generate the output section. */
2290
2291static void
2292ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2293{
25dbc73a
AM
2294 bfd_byte *buffer;
2295 asection *asec;
2296 unsigned i;
2297 unsigned num_entries;
2298 bfd_size_type length;
7619e7c7 2299
25dbc73a
AM
2300 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2301 if (asec == NULL)
2302 return;
2303
2304 if (apuinfo_list_length () == 0)
2305 return;
2306
2307 length = asec->size;
2308 if (length < 20)
2309 return;
2310
2311 buffer = bfd_malloc (length);
2312 if (buffer == NULL)
7619e7c7 2313 {
25dbc73a
AM
2314 (*_bfd_error_handler)
2315 (_("failed to allocate space for new APUinfo section."));
2316 return;
7619e7c7 2317 }
7619e7c7 2318
25dbc73a
AM
2319 /* Create the apuinfo header. */
2320 num_entries = apuinfo_list_length ();
2321 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2322 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2323 bfd_put_32 (abfd, 0x2, buffer + 8);
2324 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2325
25dbc73a
AM
2326 length = 20;
2327 for (i = 0; i < num_entries; i++)
feee612b 2328 {
25dbc73a
AM
2329 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2330 length += 4;
feee612b 2331 }
feee612b 2332
25dbc73a
AM
2333 if (length != asec->size)
2334 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2335
25dbc73a
AM
2336 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2337 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2338
25dbc73a
AM
2339 free (buffer);
2340
2341 apuinfo_list_finish ();
252b5132 2342}
25dbc73a 2343\f
7382d32a 2344static bfd_boolean
c6dd29ce 2345is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
7382d32a 2346{
c6dd29ce 2347 bfd_byte buf[GLINK_ENTRY_SIZE];
7382d32a 2348
c6dd29ce 2349 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
7382d32a
AM
2350 return FALSE;
2351
c6dd29ce
AM
2352 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2353 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2354 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2355 && bfd_get_32 (abfd, buf + 12) == BCTR);
7382d32a
AM
2356}
2357
468392fb
AM
2358static bfd_boolean
2359section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2360{
2361 bfd_vma vma = *(bfd_vma *) ptr;
2362 return ((section->flags & SEC_ALLOC) != 0
2363 && section->vma <= vma
2364 && vma < section->vma + section->size);
2365}
2366
2367static long
2368ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2369 long dynsymcount, asymbol **dynsyms,
2370 asymbol **ret)
2371{
2372 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2373 asection *plt, *relplt, *dynamic, *glink;
2374 bfd_vma glink_vma = 0;
2375 bfd_vma resolv_vma = 0;
2376 bfd_vma stub_vma;
2377 asymbol *s;
2378 arelent *p;
2379 long count, i;
2380 size_t size;
2381 char *names;
2382 bfd_byte buf[4];
2383
2384 *ret = NULL;
2385
2386 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2387 return 0;
2388
2389 if (dynsymcount <= 0)
2390 return 0;
2391
2392 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2393 if (relplt == NULL)
2394 return 0;
2395
2396 plt = bfd_get_section_by_name (abfd, ".plt");
2397 if (plt == NULL)
2398 return 0;
2399
2400 /* Call common code to handle old-style executable PLTs. */
2401 if (elf_section_flags (plt) & SHF_EXECINSTR)
2402 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2403 dynsymcount, dynsyms, ret);
2404
2405 /* If this object was prelinked, the prelinker stored the address
2406 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2407 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2408 if (dynamic != NULL)
2409 {
2410 bfd_byte *dynbuf, *extdyn, *extdynend;
2411 size_t extdynsize;
2412 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2413
2414 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2415 return -1;
2416
2417 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2418 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2419
2420 extdyn = dynbuf;
2421 extdynend = extdyn + dynamic->size;
2422 for (; extdyn < extdynend; extdyn += extdynsize)
2423 {
2424 Elf_Internal_Dyn dyn;
2425 (*swap_dyn_in) (abfd, extdyn, &dyn);
2426
2427 if (dyn.d_tag == DT_NULL)
2428 break;
2429
2430 if (dyn.d_tag == DT_PPC_GOT)
2431 {
2432 unsigned int g_o_t = dyn.d_un.d_val;
2433 asection *got = bfd_get_section_by_name (abfd, ".got");
2434 if (got != NULL
2435 && bfd_get_section_contents (abfd, got, buf,
2436 g_o_t - got->vma + 4, 4))
2437 glink_vma = bfd_get_32 (abfd, buf);
2438 break;
2439 }
2440 }
2441 free (dynbuf);
2442 }
2443
2444 /* Otherwise we read the first plt entry. */
2445 if (glink_vma == 0)
2446 {
2447 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2448 glink_vma = bfd_get_32 (abfd, buf);
2449 }
2450
2451 if (glink_vma == 0)
2452 return 0;
2453
2454 /* The .glink section usually does not survive the final
2455 link; search for the section (usually .text) where the
2456 glink stubs now reside. */
2457 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2458 if (glink == NULL)
2459 return 0;
2460
2461 /* Determine glink PLT resolver by reading the relative branch
2462 from the first glink stub. */
2463 if (bfd_get_section_contents (abfd, glink, buf,
2464 glink_vma - glink->vma, 4))
2465 {
2466 unsigned int insn = bfd_get_32 (abfd, buf);
2467
2468 /* The first glink stub may either branch to the resolver ... */
2469 insn ^= B;
2470 if ((insn & ~0x3fffffc) == 0)
2471 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2472
2473 /* ... or fall through a bunch of NOPs. */
2474 else if ((insn ^ B ^ NOP) == 0)
2475 for (i = 4;
2476 bfd_get_section_contents (abfd, glink, buf,
2477 glink_vma - glink->vma + i, 4);
2478 i += 4)
2479 if (bfd_get_32 (abfd, buf) != NOP)
2480 {
2481 resolv_vma = glink_vma + i;
2482 break;
2483 }
2484 }
2485
7382d32a
AM
2486 count = relplt->size / sizeof (Elf32_External_Rela);
2487 stub_vma = glink_vma - (bfd_vma) count * 16;
2488 /* If the stubs are those for -shared/-pie then we might have
2489 multiple stubs for each plt entry. If that is the case then
2490 there is no way to associate stubs with their plt entries short
2491 of figuring out the GOT pointer value used in the stub. */
c6dd29ce
AM
2492 if (!is_nonpic_glink_stub (abfd, glink,
2493 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
7382d32a
AM
2494 return 0;
2495
468392fb
AM
2496 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2497 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2498 return -1;
2499
468392fb
AM
2500 size = count * sizeof (asymbol);
2501 p = relplt->relocation;
2502 for (i = 0; i < count; i++, p++)
e054468f
AM
2503 {
2504 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2505 if (p->addend != 0)
2506 size += sizeof ("+0x") - 1 + 8;
2507 }
468392fb
AM
2508
2509 size += sizeof (asymbol) + sizeof ("__glink");
2510
2511 if (resolv_vma)
2512 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2513
2514 s = *ret = bfd_malloc (size);
2515 if (s == NULL)
2516 return -1;
2517
2518 names = (char *) (s + count + 1 + (resolv_vma != 0));
2519 p = relplt->relocation;
2520 for (i = 0; i < count; i++, p++)
2521 {
2522 size_t len;
2523
2524 *s = **p->sym_ptr_ptr;
2525 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2526 we are defining a symbol, ensure one of them is set. */
2527 if ((s->flags & BSF_LOCAL) == 0)
2528 s->flags |= BSF_GLOBAL;
6ba2a415 2529 s->flags |= BSF_SYNTHETIC;
468392fb
AM
2530 s->section = glink;
2531 s->value = stub_vma - glink->vma;
2532 s->name = names;
2533 s->udata.p = NULL;
2534 len = strlen ((*p->sym_ptr_ptr)->name);
2535 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2536 names += len;
e054468f
AM
2537 if (p->addend != 0)
2538 {
2539 memcpy (names, "+0x", sizeof ("+0x") - 1);
2540 names += sizeof ("+0x") - 1;
2541 bfd_sprintf_vma (abfd, names, p->addend);
2542 names += strlen (names);
2543 }
468392fb
AM
2544 memcpy (names, "@plt", sizeof ("@plt"));
2545 names += sizeof ("@plt");
2546 ++s;
2547 stub_vma += 16;
2548 }
2549
2550 /* Add a symbol at the start of the glink branch table. */
86a4952b 2551 memset (s, 0, sizeof *s);
468392fb 2552 s->the_bfd = abfd;
6ba2a415 2553 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
2554 s->section = glink;
2555 s->value = glink_vma - glink->vma;
2556 s->name = names;
2557 memcpy (names, "__glink", sizeof ("__glink"));
2558 names += sizeof ("__glink");
2559 s++;
2560 count++;
2561
2562 if (resolv_vma)
2563 {
2564 /* Add a symbol for the glink PLT resolver. */
86a4952b 2565 memset (s, 0, sizeof *s);
468392fb 2566 s->the_bfd = abfd;
6ba2a415 2567 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
2568 s->section = glink;
2569 s->value = resolv_vma - glink->vma;
2570 s->name = names;
2571 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2572 names += sizeof ("__glink_PLTresolve");
2573 s++;
2574 count++;
2575 }
2576
2577 return count;
2578}
2579\f
25dbc73a
AM
2580/* The following functions are specific to the ELF linker, while
2581 functions above are used generally. They appear in this file more
2582 or less in the order in which they are called. eg.
2583 ppc_elf_check_relocs is called early in the link process,
2584 ppc_elf_finish_dynamic_sections is one of the last functions
2585 called. */
252b5132 2586
25dbc73a
AM
2587/* The PPC linker needs to keep track of the number of relocs that it
2588 decides to copy as dynamic relocs in check_relocs for each symbol.
2589 This is so that it can later discard them if they are found to be
2590 unnecessary. We store the information in a field extending the
2591 regular ELF linker hash table. */
ae9a127f 2592
25dbc73a 2593struct ppc_elf_dyn_relocs
252b5132 2594{
25dbc73a 2595 struct ppc_elf_dyn_relocs *next;
252b5132 2596
25dbc73a
AM
2597 /* The input section of the reloc. */
2598 asection *sec;
252b5132 2599
25dbc73a
AM
2600 /* Total number of relocs copied for the input section. */
2601 bfd_size_type count;
252b5132 2602
25dbc73a
AM
2603 /* Number of pc-relative relocs copied for the input section. */
2604 bfd_size_type pc_count;
2605};
252b5132 2606
a6aa5195 2607/* Track PLT entries needed for a given symbol. We might need more
a877a2b6 2608 than one glink entry per symbol when generating a pic binary. */
a6aa5195
AM
2609struct plt_entry
2610{
2611 struct plt_entry *next;
2612
2613 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2614 This field stores the offset into .got2 used to initialise the
a877a2b6
AM
2615 GOT pointer reg. It will always be at least 32768. (Current
2616 gcc always uses an offset of 32768, but ld -r will pack .got2
2617 sections together resulting in larger offsets). */
a6aa5195
AM
2618 bfd_vma addend;
2619
2620 /* The .got2 section. */
2621 asection *sec;
2622
2623 /* PLT refcount or offset. */
2624 union
2625 {
2626 bfd_signed_vma refcount;
2627 bfd_vma offset;
2628 } plt;
2629
2630 /* .glink stub offset. */
2631 bfd_vma glink_offset;
2632};
2633
1d483afe 2634/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM
2635 selects those that must be copied when linking a shared library,
2636 even when the symbol is local. */
252b5132 2637
1d483afe
AM
2638static int
2639must_be_dyn_reloc (struct bfd_link_info *info,
2640 enum elf_ppc_reloc_type r_type)
2641{
2642 switch (r_type)
2643 {
2644 default:
2645 return 1;
2646
2647 case R_PPC_REL24:
2648 case R_PPC_REL14:
2649 case R_PPC_REL14_BRTAKEN:
2650 case R_PPC_REL14_BRNTAKEN:
2651 case R_PPC_REL32:
2652 return 0;
2653
2654 case R_PPC_TPREL32:
2655 case R_PPC_TPREL16:
2656 case R_PPC_TPREL16_LO:
2657 case R_PPC_TPREL16_HI:
2658 case R_PPC_TPREL16_HA:
2659 return !info->executable;
2660 }
2661}
252b5132 2662
25dbc73a
AM
2663/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2664 copying dynamic variables from a shared lib into an app's dynbss
2665 section, and instead use a dynamic relocation to point into the
2666 shared lib. */
2667#define ELIMINATE_COPY_RELOCS 1
252b5132 2668
25dbc73a 2669/* PPC ELF linker hash entry. */
252b5132 2670
25dbc73a
AM
2671struct ppc_elf_link_hash_entry
2672{
2673 struct elf_link_hash_entry elf;
252b5132 2674
25dbc73a
AM
2675 /* If this symbol is used in the linker created sections, the processor
2676 specific backend uses this field to map the field into the offset
2677 from the beginning of the section. */
2678 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 2679
25dbc73a
AM
2680 /* Track dynamic relocs copied for this symbol. */
2681 struct ppc_elf_dyn_relocs *dyn_relocs;
252b5132 2682
25dbc73a
AM
2683 /* Contexts in which symbol is used in the GOT (or TOC).
2684 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2685 corresponding relocs are encountered during check_relocs.
2686 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2687 indicate the corresponding GOT entry type is not needed. */
2688#define TLS_GD 1 /* GD reloc. */
2689#define TLS_LD 2 /* LD reloc. */
2690#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2691#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2692#define TLS_TLS 16 /* Any TLS reloc. */
2693#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
e054468f 2694#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
25dbc73a 2695 char tls_mask;
4dc4a9a5
DJ
2696
2697 /* Nonzero if we have seen a small data relocation referring to this
2698 symbol. */
2699 unsigned char has_sda_refs;
25dbc73a 2700};
252b5132 2701
25dbc73a
AM
2702#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2703
2704/* PPC ELF linker hash table. */
2705
2706struct ppc_elf_link_hash_table
2707{
2708 struct elf_link_hash_table elf;
2709
2710 /* Short-cuts to get to dynamic linker sections. */
2711 asection *got;
2712 asection *relgot;
d7128ce4 2713 asection *glink;
25dbc73a
AM
2714 asection *plt;
2715 asection *relplt;
e054468f
AM
2716 asection *iplt;
2717 asection *reliplt;
25dbc73a
AM
2718 asection *dynbss;
2719 asection *relbss;
2720 asection *dynsbss;
2721 asection *relsbss;
c9a2f333 2722 elf_linker_section_t sdata[2];
25dbc73a
AM
2723 asection *sbss;
2724
016687f8
AM
2725 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2726 asection *srelplt2;
2727
2728 /* The .got.plt section (VxWorks only)*/
2729 asection *sgotplt;
2730
1d483afe 2731 /* Shortcut to __tls_get_addr. */
25dbc73a 2732 struct elf_link_hash_entry *tls_get_addr;
252b5132 2733
016687f8
AM
2734 /* The bfd that forced an old-style PLT. */
2735 bfd *old_bfd;
2736
25dbc73a
AM
2737 /* TLS local dynamic got entry handling. */
2738 union {
2739 bfd_signed_vma refcount;
2740 bfd_vma offset;
2741 } tlsld_got;
252b5132 2742
c6dd29ce 2743 /* Offset of branch table to PltResolve function in glink. */
d7128ce4
AM
2744 bfd_vma glink_pltresolve;
2745
3b36f7e6
AM
2746 /* Size of reserved GOT entries. */
2747 unsigned int got_header_size;
2748 /* Non-zero if allocating the header left a gap. */
2749 unsigned int got_gap;
2750
4a3dc543
RS
2751 /* The type of PLT we have chosen to use. */
2752 enum ppc_elf_plt_type plt_type;
2753
0ba07910
AM
2754 /* Set if we should emit symbols for stubs. */
2755 unsigned int emit_stub_syms:1;
2756
9d8504b1 2757 /* True if the target system is VxWorks. */
016687f8 2758 unsigned int is_vxworks:1;
9d8504b1
PB
2759
2760 /* The size of PLT entries. */
2761 int plt_entry_size;
2762 /* The distance between adjacent PLT slots. */
2763 int plt_slot_size;
2764 /* The size of the first PLT entry. */
2765 int plt_initial_entry_size;
016687f8 2766
87d72d41
AM
2767 /* Small local sym cache. */
2768 struct sym_cache sym_cache;
25dbc73a 2769};
252b5132 2770
25dbc73a 2771/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 2772
25dbc73a
AM
2773#define ppc_elf_hash_table(p) \
2774 ((struct ppc_elf_link_hash_table *) (p)->hash)
252b5132 2775
25dbc73a 2776/* Create an entry in a PPC ELF linker hash table. */
252b5132 2777
25dbc73a
AM
2778static struct bfd_hash_entry *
2779ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2780 struct bfd_hash_table *table,
2781 const char *string)
252b5132 2782{
25dbc73a
AM
2783 /* Allocate the structure if it has not already been allocated by a
2784 subclass. */
2785 if (entry == NULL)
2786 {
2787 entry = bfd_hash_allocate (table,
2788 sizeof (struct ppc_elf_link_hash_entry));
2789 if (entry == NULL)
2790 return entry;
2791 }
252b5132 2792
25dbc73a
AM
2793 /* Call the allocation method of the superclass. */
2794 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2795 if (entry != NULL)
2796 {
2797 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2798 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2799 ppc_elf_hash_entry (entry)->tls_mask = 0;
2800 }
252b5132 2801
25dbc73a 2802 return entry;
252b5132 2803}
3dab13f6 2804
25dbc73a 2805/* Create a PPC ELF linker hash table. */
3dab13f6 2806
25dbc73a
AM
2807static struct bfd_link_hash_table *
2808ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 2809{
25dbc73a 2810 struct ppc_elf_link_hash_table *ret;
3dab13f6 2811
25dbc73a
AM
2812 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2813 if (ret == NULL)
2814 return NULL;
3dab13f6 2815
66eb6687
AM
2816 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2817 ppc_elf_link_hash_newfunc,
2818 sizeof (struct ppc_elf_link_hash_entry)))
3dab13f6 2819 {
25dbc73a
AM
2820 free (ret);
2821 return NULL;
2822 }
58111eb7 2823
a6aa5195
AM
2824 ret->elf.init_plt_refcount.refcount = 0;
2825 ret->elf.init_plt_refcount.glist = NULL;
2826 ret->elf.init_plt_offset.offset = 0;
2827 ret->elf.init_plt_offset.glist = NULL;
2828
c9a2f333
AM
2829 ret->sdata[0].name = ".sdata";
2830 ret->sdata[0].sym_name = "_SDA_BASE_";
2831 ret->sdata[0].bss_name = ".sbss";
2832
2833 ret->sdata[1].name = ".sdata2";
2834 ret->sdata[1].sym_name = "_SDA2_BASE_";
2835 ret->sdata[1].bss_name = ".sbss2";
2836
9d8504b1
PB
2837 ret->plt_entry_size = 12;
2838 ret->plt_slot_size = 8;
2839 ret->plt_initial_entry_size = 72;
9d8504b1 2840
25dbc73a
AM
2841 return &ret->elf.root;
2842}
3dab13f6 2843
9d8504b1 2844/* Create .got and the related sections. */
3dab13f6 2845
25dbc73a
AM
2846static bfd_boolean
2847ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2848{
2849 struct ppc_elf_link_hash_table *htab;
2850 asection *s;
2851 flagword flags;
3dab13f6 2852
25dbc73a
AM
2853 if (!_bfd_elf_create_got_section (abfd, info))
2854 return FALSE;
3dab13f6 2855
25dbc73a
AM
2856 htab = ppc_elf_hash_table (info);
2857 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2858 if (s == NULL)
2859 abort ();
3dab13f6 2860
9d8504b1
PB
2861 if (htab->is_vxworks)
2862 {
2863 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2864 if (!htab->sgotplt)
2865 abort ();
2866 }
2867 else
2868 {
2869 /* The powerpc .got has a blrl instruction in it. Mark it
2870 executable. */
2871 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2872 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2873 if (!bfd_set_section_flags (abfd, s, flags))
2874 return FALSE;
2875 }
3dab13f6 2876
64e77c6d
L
2877 htab->relgot = bfd_get_section_by_name (abfd, ".rela.got");
2878 if (!htab->relgot)
2879 abort ();
3dab13f6 2880
25dbc73a
AM
2881 return TRUE;
2882}
3dab13f6 2883
e054468f
AM
2884static bfd_boolean
2885ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
2886{
2887 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2888 asection *s;
2889 flagword flags;
2890
2891 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
2892 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2893 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
2894 htab->glink = s;
2895 if (s == NULL
2896 || !bfd_set_section_alignment (abfd, s, 4))
2897 return FALSE;
2898
2899 flags = SEC_ALLOC | SEC_LINKER_CREATED;
2900 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
2901 htab->iplt = s;
2902 if (s == NULL
2903 || !bfd_set_section_alignment (abfd, s, 4))
2904 return FALSE;
2905
2906 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2907 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2908 s = bfd_make_section_with_flags (abfd, ".rela.iplt", flags);
2909 htab->reliplt = s;
2910 if (s == NULL
2911 || ! bfd_set_section_alignment (abfd, s, 2))
2912 return FALSE;
2913 return TRUE;
2914}
2915
25dbc73a
AM
2916/* We have to create .dynsbss and .rela.sbss here so that they get mapped
2917 to output sections (just like _bfd_elf_create_dynamic_sections has
2918 to create .dynbss and .rela.bss). */
3dab13f6 2919
25dbc73a
AM
2920static bfd_boolean
2921ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2922{
2923 struct ppc_elf_link_hash_table *htab;
2924 asection *s;
2925 flagword flags;
3dab13f6 2926
25dbc73a 2927 htab = ppc_elf_hash_table (info);
3dab13f6 2928
25dbc73a
AM
2929 if (htab->got == NULL
2930 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
2931 return FALSE;
2932
25dbc73a
AM
2933 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2934 return FALSE;
3dab13f6 2935
e054468f
AM
2936 if (htab->glink == NULL
2937 && !ppc_elf_create_glink (abfd, info))
d7128ce4 2938 return FALSE;
3dab13f6 2939
25dbc73a 2940 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
3b36f7e6
AM
2941 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2942 SEC_ALLOC | SEC_LINKER_CREATED);
2943 htab->dynsbss = s;
3496cb2a 2944 if (s == NULL)
25dbc73a 2945 return FALSE;
3dab13f6 2946
25dbc73a
AM
2947 if (! info->shared)
2948 {
2949 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
e054468f
AM
2950 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2951 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
d7128ce4 2952 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 2953 htab->relsbss = s;
25dbc73a 2954 if (s == NULL
25dbc73a
AM
2955 || ! bfd_set_section_alignment (abfd, s, 2))
2956 return FALSE;
2957 }
3dab13f6 2958
711de32c
RS
2959 if (htab->is_vxworks
2960 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2961 return FALSE;
9d8504b1 2962
25dbc73a
AM
2963 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2964 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2965 if (s == NULL)
2966 abort ();
3dab13f6 2967
3b36f7e6 2968 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
2969 if (htab->plt_type == PLT_VXWORKS)
2970 /* The VxWorks PLT is a loaded section with contents. */
2971 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
2972 return bfd_set_section_flags (abfd, s, flags);
2973}
3dab13f6 2974
25dbc73a 2975/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 2976
25dbc73a 2977static void
fcfa13d2 2978ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
2979 struct elf_link_hash_entry *dir,
2980 struct elf_link_hash_entry *ind)
2981{
2982 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 2983
25dbc73a
AM
2984 edir = (struct ppc_elf_link_hash_entry *) dir;
2985 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 2986
25dbc73a
AM
2987 if (eind->dyn_relocs != NULL)
2988 {
2989 if (edir->dyn_relocs != NULL)
3dab13f6 2990 {
25dbc73a
AM
2991 struct ppc_elf_dyn_relocs **pp;
2992 struct ppc_elf_dyn_relocs *p;
3dab13f6 2993
fcfa13d2 2994 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
2995 list. Merge any entries against the same section. */
2996 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 2997 {
25dbc73a
AM
2998 struct ppc_elf_dyn_relocs *q;
2999
3000 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3001 if (q->sec == p->sec)
3002 {
3003 q->pc_count += p->pc_count;
3004 q->count += p->count;
3005 *pp = p->next;
3006 break;
3007 }
3008 if (q == NULL)
3009 pp = &p->next;
3dab13f6 3010 }
25dbc73a 3011 *pp = edir->dyn_relocs;
3dab13f6 3012 }
25dbc73a
AM
3013
3014 edir->dyn_relocs = eind->dyn_relocs;
3015 eind->dyn_relocs = NULL;
3dab13f6 3016 }
3dab13f6 3017
25dbc73a 3018 edir->tls_mask |= eind->tls_mask;
4dc4a9a5 3019 edir->has_sda_refs |= eind->has_sda_refs;
3dab13f6 3020
a6aa5195
AM
3021 /* If called to transfer flags for a weakdef during processing
3022 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3023 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3024 if (!(ELIMINATE_COPY_RELOCS
3025 && eind->elf.root.type != bfd_link_hash_indirect
3026 && edir->elf.dynamic_adjusted))
3027 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3028
3029 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3030 edir->elf.ref_regular |= eind->elf.ref_regular;
3031 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3032 edir->elf.needs_plt |= eind->elf.needs_plt;
0eb4a168 3033 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
a6aa5195
AM
3034
3035 /* If we were called to copy over info for a weak sym, that's all. */
3036 if (eind->elf.root.type != bfd_link_hash_indirect)
3037 return;
3038
3039 /* Copy over the GOT refcount entries that we may have already seen to
3040 the symbol which just became indirect. */
fcfa13d2
AM
3041 edir->elf.got.refcount += eind->elf.got.refcount;
3042 eind->elf.got.refcount = 0;
a6aa5195
AM
3043
3044 /* And plt entries. */
3045 if (eind->elf.plt.plist != NULL)
3046 {
3047 if (edir->elf.plt.plist != NULL)
3048 {
3049 struct plt_entry **entp;
3050 struct plt_entry *ent;
3051
3052 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3053 {
3054 struct plt_entry *dent;
3055
3056 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3057 if (dent->sec == ent->sec && dent->addend == ent->addend)
3058 {
3059 dent->plt.refcount += ent->plt.refcount;
3060 *entp = ent->next;
3061 break;
3062 }
3063 if (dent == NULL)
3064 entp = &ent->next;
3065 }
3066 *entp = edir->elf.plt.plist;
3067 }
3068
3069 edir->elf.plt.plist = eind->elf.plt.plist;
3070 eind->elf.plt.plist = NULL;
3071 }
3072
fcfa13d2 3073 if (eind->elf.dynindx != -1)
25dbc73a 3074 {
fcfa13d2
AM
3075 if (edir->elf.dynindx != -1)
3076 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3077 edir->elf.dynstr_index);
a6aa5195
AM
3078 edir->elf.dynindx = eind->elf.dynindx;
3079 edir->elf.dynstr_index = eind->elf.dynstr_index;
3080 eind->elf.dynindx = -1;
3081 eind->elf.dynstr_index = 0;
25dbc73a 3082 }
25dbc73a 3083}
3dab13f6 3084
25dbc73a
AM
3085/* Hook called by the linker routine which adds symbols from an object
3086 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3087
25dbc73a
AM
3088static bfd_boolean
3089ppc_elf_add_symbol_hook (bfd *abfd,
3090 struct bfd_link_info *info,
3091 Elf_Internal_Sym *sym,
3092 const char **namep ATTRIBUTE_UNUSED,
3093 flagword *flagsp ATTRIBUTE_UNUSED,
3094 asection **secp,
3095 bfd_vma *valp)
3096{
3097 if (sym->st_shndx == SHN_COMMON
3098 && !info->relocatable
0c8d6e5c
AM
3099 && is_ppc_elf (info->output_bfd)
3100 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
3101 {
3102 /* Common symbols less than or equal to -G nn bytes are automatically
3103 put into .sbss. */
3104 struct ppc_elf_link_hash_table *htab;
3dab13f6 3105
25dbc73a
AM
3106 htab = ppc_elf_hash_table (info);
3107 if (htab->sbss == NULL)
3108 {
644285ef 3109 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3110
644285ef
AM
3111 if (!htab->elf.dynobj)
3112 htab->elf.dynobj = abfd;
3113
3496cb2a
L
3114 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3115 ".sbss",
3116 flags);
3117 if (htab->sbss == NULL)
25dbc73a 3118 return FALSE;
3dab13f6 3119 }
3dab13f6 3120
25dbc73a
AM
3121 *secp = htab->sbss;
3122 *valp = sym->st_size;
3123 }
3dab13f6 3124
e054468f
AM
3125 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3126 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
3127
25dbc73a 3128 return TRUE;
3dab13f6
AM
3129}
3130\f
046183de
AM
3131static bfd_boolean
3132create_sdata_sym (struct ppc_elf_link_hash_table *htab,
3133 elf_linker_section_t *lsect)
3134{
3135 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3136 TRUE, FALSE, TRUE);
3137 if (lsect->sym == NULL)
3138 return FALSE;
3139 if (lsect->sym->root.type == bfd_link_hash_new)
3140 lsect->sym->non_elf = 0;
3141 lsect->sym->ref_regular = 1;
3142 return TRUE;
3143}
3144
c9a2f333 3145/* Create a special linker section. */
25dbc73a 3146
c9a2f333 3147static bfd_boolean
55fd94b0
AM
3148ppc_elf_create_linker_section (bfd *abfd,
3149 struct bfd_link_info *info,
c9a2f333
AM
3150 flagword flags,
3151 elf_linker_section_t *lsect)
252b5132 3152{
58111eb7 3153 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 3154 asection *s;
58111eb7 3155
c9a2f333
AM
3156 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3157 | SEC_LINKER_CREATED);
58111eb7
AM
3158
3159 /* Record the first bfd that needs the special sections. */
3160 if (!htab->elf.dynobj)
3161 htab->elf.dynobj = abfd;
3162
3496cb2a
L
3163 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3164 lsect->name,
3165 flags);
76750a2f 3166 if (s == NULL
76750a2f 3167 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 3168 return FALSE;
76750a2f 3169 lsect->section = s;
58111eb7 3170
046183de 3171 return create_sdata_sym (htab, lsect);
252b5132 3172}
252b5132 3173
25dbc73a
AM
3174/* Find a linker generated pointer with a given addend and type. */
3175
3176static elf_linker_section_pointers_t *
3177elf_find_pointer_linker_section
3178 (elf_linker_section_pointers_t *linker_pointers,
3179 bfd_vma addend,
3180 elf_linker_section_t *lsect)
252b5132 3181{
25dbc73a
AM
3182 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3183 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3184 return linker_pointers;
252b5132 3185
25dbc73a
AM
3186 return NULL;
3187}
3188
3189/* Allocate a pointer to live in a linker created section. */
3190
3191static bfd_boolean
3192elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM
3193 elf_linker_section_t *lsect,
3194 struct elf_link_hash_entry *h,
3195 const Elf_Internal_Rela *rel)
3196{
3197 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3198 elf_linker_section_pointers_t *linker_section_ptr;
3199 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3200 bfd_size_type amt;
3201
3202 BFD_ASSERT (lsect != NULL);
3203
3204 /* Is this a global symbol? */
3205 if (h != NULL)
3206 {
3207 struct ppc_elf_link_hash_entry *eh;
3208
3209 /* Has this symbol already been allocated? If so, our work is done. */
3210 eh = (struct ppc_elf_link_hash_entry *) h;
3211 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3212 rel->r_addend,
3213 lsect))
3214 return TRUE;
3215
3216 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3217 }
3218 else
3219 {
0c8d6e5c 3220 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3221
25dbc73a
AM
3222 /* Allocation of a pointer to a local symbol. */
3223 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3224
3225 /* Allocate a table to hold the local symbols if first time. */
3226 if (!ptr)
3227 {
0ffa91dd 3228 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3229
3230 amt = num_symbols;
3231 amt *= sizeof (elf_linker_section_pointers_t *);
3232 ptr = bfd_zalloc (abfd, amt);
3233
3234 if (!ptr)
3235 return FALSE;
3236
3237 elf_local_ptr_offsets (abfd) = ptr;
3238 }
3239
3240 /* Has this symbol already been allocated? If so, our work is done. */
3241 if (elf_find_pointer_linker_section (ptr[r_symndx],
3242 rel->r_addend,
3243 lsect))
3244 return TRUE;
252b5132 3245
25dbc73a 3246 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3247 }
41fcb14e 3248
25dbc73a
AM
3249 /* Allocate space for a pointer in the linker section, and allocate
3250 a new pointer record from internal memory. */
3251 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3252 amt = sizeof (elf_linker_section_pointers_t);
3253 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3254
25dbc73a 3255 if (!linker_section_ptr)
7619e7c7 3256 return FALSE;
41fcb14e 3257
25dbc73a
AM
3258 linker_section_ptr->next = *ptr_linker_section_ptr;
3259 linker_section_ptr->addend = rel->r_addend;
3260 linker_section_ptr->lsect = lsect;
25dbc73a 3261 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3262
25dbc73a
AM
3263 linker_section_ptr->offset = lsect->section->size;
3264 lsect->section->size += 4;
7619e7c7 3265
25dbc73a
AM
3266#ifdef DEBUG
3267 fprintf (stderr,
3268 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3269 lsect->name, (long) linker_section_ptr->offset,
3270 (long) lsect->section->size);
3271#endif
7619e7c7
AM
3272
3273 return TRUE;
41fcb14e
AM
3274}
3275
e054468f 3276static struct plt_entry **
25dbc73a
AM
3277update_local_sym_info (bfd *abfd,
3278 Elf_Internal_Shdr *symtab_hdr,
3279 unsigned long r_symndx,
3280 int tls_type)
252b5132 3281{
25dbc73a 3282 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
e054468f 3283 struct plt_entry **local_plt;
25dbc73a 3284 char *local_got_tls_masks;
252b5132 3285
25dbc73a 3286 if (local_got_refcounts == NULL)
252b5132 3287 {
25dbc73a
AM
3288 bfd_size_type size = symtab_hdr->sh_info;
3289
e054468f
AM
3290 size *= (sizeof (*local_got_refcounts)
3291 + sizeof (*local_plt)
3292 + sizeof (*local_got_tls_masks));
25dbc73a
AM
3293 local_got_refcounts = bfd_zalloc (abfd, size);
3294 if (local_got_refcounts == NULL)
e054468f 3295 return NULL;
25dbc73a 3296 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3297 }
41fcb14e 3298
e054468f
AM
3299 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3300 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
25dbc73a 3301 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
3302 if (tls_type != PLT_IFUNC)
3303 local_got_refcounts[r_symndx] += 1;
3304 return local_plt + r_symndx;
25dbc73a 3305}
41fcb14e 3306
a6aa5195 3307static bfd_boolean
3ec01793 3308update_plt_info (bfd *abfd, struct plt_entry **plist,
a6aa5195
AM
3309 asection *sec, bfd_vma addend)
3310{
3311 struct plt_entry *ent;
3312
3ec01793 3313 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3314 if (ent->sec == sec && ent->addend == addend)
3315 break;
3316 if (ent == NULL)
3317 {
3318 bfd_size_type amt = sizeof (*ent);
3319 ent = bfd_alloc (abfd, amt);
3320 if (ent == NULL)
3321 return FALSE;
3ec01793 3322 ent->next = *plist;
a6aa5195
AM
3323 ent->sec = sec;
3324 ent->addend = addend;
3325 ent->plt.refcount = 0;
3ec01793 3326 *plist = ent;
a6aa5195
AM
3327 }
3328 ent->plt.refcount += 1;
3329 return TRUE;
3330}
3331
3332static struct plt_entry *
3ec01793 3333find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
a6aa5195
AM
3334{
3335 struct plt_entry *ent;
3336
3337 if (addend < 32768)
3338 sec = NULL;
3ec01793 3339 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3340 if (ent->sec == sec && ent->addend == addend)
3341 break;
3342 return ent;
3343}
3344
e054468f
AM
3345static bfd_boolean
3346is_branch_reloc (enum elf_ppc_reloc_type r_type)
3347{
3348 return (r_type == R_PPC_PLTREL24
3349 || r_type == R_PPC_LOCAL24PC
3350 || r_type == R_PPC_REL24
3351 || r_type == R_PPC_REL14
3352 || r_type == R_PPC_REL14_BRTAKEN
3353 || r_type == R_PPC_REL14_BRNTAKEN
3354 || r_type == R_PPC_ADDR24
3355 || r_type == R_PPC_ADDR14
3356 || r_type == R_PPC_ADDR14_BRTAKEN
3357 || r_type == R_PPC_ADDR14_BRNTAKEN);
3358}
3359
25dbc73a
AM
3360static void
3361bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3362{
3363 (*_bfd_error_handler)
3364 (_("%B: relocation %s cannot be used when making a shared object"),
3365 abfd,
3366 ppc_elf_howto_table[r_type]->name);
3367 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3368}
3369
25dbc73a
AM
3370/* Look through the relocs for a section during the first phase, and
3371 allocate space in the global offset table or procedure linkage
3372 table. */
252b5132 3373
b34976b6 3374static bfd_boolean
25dbc73a
AM
3375ppc_elf_check_relocs (bfd *abfd,
3376 struct bfd_link_info *info,
3377 asection *sec,
3378 const Elf_Internal_Rela *relocs)
252b5132 3379{
7619e7c7 3380 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3381 Elf_Internal_Shdr *symtab_hdr;
3382 struct elf_link_hash_entry **sym_hashes;
3383 const Elf_Internal_Rela *rel;
3384 const Elf_Internal_Rela *rel_end;
a6aa5195 3385 asection *got2, *sreloc;
727fc41e 3386 struct elf_link_hash_entry *tga;
25dbc73a
AM
3387
3388 if (info->relocatable)
3389 return TRUE;
252b5132 3390
c87b5a93
AM
3391 /* Don't do anything special with non-loaded, non-alloced sections.
3392 In particular, any relocs in such sections should not affect GOT
3393 and PLT reference counting (ie. we don't allow them to create GOT
3394 or PLT entries), there's no possibility or desire to optimize TLS
3395 relocs, and there's not much point in propagating relocs to shared
3396 libs that the dynamic linker won't relocate. */
3397 if ((sec->flags & SEC_ALLOC) == 0)
3398 return TRUE;
3399
252b5132 3400#ifdef DEBUG
25dbc73a
AM
3401 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3402 sec, abfd);
252b5132
RH
3403#endif
3404
0c8d6e5c 3405 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3406
25dbc73a
AM
3407 /* Initialize howto table if not already done. */
3408 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3409 ppc_elf_howto_init ();
3410
7619e7c7 3411 htab = ppc_elf_hash_table (info);
25f23106
AM
3412 if (htab->glink == NULL)
3413 {
3414 if (htab->elf.dynobj == NULL)
3415 htab->elf.dynobj = abfd;
3416 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3417 return FALSE;
3418 }
727fc41e
AM
3419 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3420 FALSE, FALSE, TRUE);
0ffa91dd 3421 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 3422 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3423 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
3424 sreloc = NULL;
3425
3426 rel_end = relocs + sec->reloc_count;
3427 for (rel = relocs; rel < rel_end; rel++)
3428 {
3429 unsigned long r_symndx;
3430 enum elf_ppc_reloc_type r_type;
3431 struct elf_link_hash_entry *h;
727fc41e 3432 int tls_type;
e054468f 3433 struct plt_entry **ifunc;
25dbc73a
AM
3434
3435 r_symndx = ELF32_R_SYM (rel->r_info);
3436 if (r_symndx < symtab_hdr->sh_info)
3437 h = NULL;
3438 else
973a3492
L
3439 {
3440 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3441 while (h->root.type == bfd_link_hash_indirect
3442 || h->root.type == bfd_link_hash_warning)
3443 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3444 }
25dbc73a
AM
3445
3446 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3447 This shows up in particular in an R_PPC_ADDR32 in the eabi
3448 startup code. */
3b36f7e6
AM
3449 if (h != NULL
3450 && htab->got == NULL
3451 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3452 {
3b36f7e6
AM
3453 if (htab->elf.dynobj == NULL)
3454 htab->elf.dynobj = abfd;
3455 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3456 return FALSE;
3457 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3458 }
252b5132 3459
727fc41e 3460 tls_type = 0;
e054468f 3461 ifunc = NULL;
de972ffa 3462 r_type = ELF32_R_TYPE (rel->r_info);
25f23106 3463 if (!htab->is_vxworks)
e054468f 3464 {
e054468f
AM
3465 if (h != NULL)
3466 {
3467 if (h->type == STT_GNU_IFUNC)
de972ffa 3468 ifunc = &h->plt.plist;
e054468f
AM
3469 }
3470 else
3471 {
3472 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3473 abfd, r_symndx);
3474 if (isym == NULL)
3475 return FALSE;
3476
de972ffa
AM
3477 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3478 && (!info->shared
3479 || is_branch_reloc (r_type)))
e054468f 3480 {
de972ffa
AM
3481 bfd_vma addend;
3482
e054468f
AM
3483 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3484 PLT_IFUNC);
3485 if (ifunc == NULL)
3486 return FALSE;
de972ffa
AM
3487
3488 /* STT_GNU_IFUNC symbols must have a PLT entry;
3489 In a non-pie executable even when there are
3490 no plt calls. */
3491 addend = 0;
3492 if (r_type == R_PPC_PLTREL24)
3493 {
3494 ppc_elf_tdata (abfd)->makes_plt_call = 1;
a877a2b6
AM
3495 if (info->shared)
3496 addend = rel->r_addend;
de972ffa
AM
3497 }
3498 if (!update_plt_info (abfd, ifunc,
3499 addend < 32768 ? NULL : got2, addend))
3500 return FALSE;
e054468f
AM
3501 }
3502 }
25f23106
AM
3503 }
3504
de972ffa
AM
3505 if (!htab->is_vxworks
3506 && is_branch_reloc (r_type)
3507 && h != NULL
3508 && h == tga)
25f23106 3509 {
de972ffa
AM
3510 if (rel != relocs
3511 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3512 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3513 /* We have a new-style __tls_get_addr call with a marker
3514 reloc. */
3515 ;
3516 else
3517 /* Mark this section as having an old-style call. */
3518 sec->has_tls_get_addr_call = 1;
e054468f 3519 }
727fc41e 3520
25dbc73a
AM
3521 switch (r_type)
3522 {
727fc41e
AM
3523 case R_PPC_TLSGD:
3524 case R_PPC_TLSLD:
3525 /* These special tls relocs tie a call to __tls_get_addr with
3526 its parameter symbol. */
3527 break;
3528
25dbc73a
AM
3529 case R_PPC_GOT_TLSLD16:
3530 case R_PPC_GOT_TLSLD16_LO:
3531 case R_PPC_GOT_TLSLD16_HI:
3532 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
3533 tls_type = TLS_TLS | TLS_LD;
3534 goto dogottls;
252b5132 3535
25dbc73a
AM
3536 case R_PPC_GOT_TLSGD16:
3537 case R_PPC_GOT_TLSGD16_LO:
3538 case R_PPC_GOT_TLSGD16_HI:
3539 case R_PPC_GOT_TLSGD16_HA:
3540 tls_type = TLS_TLS | TLS_GD;
3541 goto dogottls;
3542
3543 case R_PPC_GOT_TPREL16:
3544 case R_PPC_GOT_TPREL16_LO:
3545 case R_PPC_GOT_TPREL16_HI:
3546 case R_PPC_GOT_TPREL16_HA:
1d483afe 3547 if (!info->executable)
25dbc73a
AM
3548 info->flags |= DF_STATIC_TLS;
3549 tls_type = TLS_TLS | TLS_TPREL;
3550 goto dogottls;
3551
3552 case R_PPC_GOT_DTPREL16:
3553 case R_PPC_GOT_DTPREL16_LO:
3554 case R_PPC_GOT_DTPREL16_HI:
3555 case R_PPC_GOT_DTPREL16_HA:
3556 tls_type = TLS_TLS | TLS_DTPREL;
3557 dogottls:
3558 sec->has_tls_reloc = 1;
3559 /* Fall thru */
252b5132 3560
25dbc73a
AM
3561 /* GOT16 relocations */
3562 case R_PPC_GOT16:
3563 case R_PPC_GOT16_LO:
3564 case R_PPC_GOT16_HI:
3565 case R_PPC_GOT16_HA:
3566 /* This symbol requires a global offset table entry. */
3567 if (htab->got == NULL)
3568 {
3569 if (htab->elf.dynobj == NULL)
3570 htab->elf.dynobj = abfd;
3571 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3572 return FALSE;
3573 }
3574 if (h != NULL)
3575 {
3576 h->got.refcount += 1;
3577 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3578 }
3579 else
3580 /* This is a global offset table entry for a local symbol. */
3581 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3582 return FALSE;
3583 break;
252b5132 3584
25dbc73a
AM
3585 /* Indirect .sdata relocation. */
3586 case R_PPC_EMB_SDAI16:
3587 if (info->shared)
3588 {
3589 bad_shared_reloc (abfd, r_type);
3590 return FALSE;
3591 }
c9a2f333
AM
3592 if (htab->sdata[0].section == NULL
3593 && !ppc_elf_create_linker_section (abfd, info, 0,
3594 &htab->sdata[0]))
3595 return FALSE;
76750a2f
AM
3596 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3597 h, rel))
25dbc73a 3598 return FALSE;
046183de
AM
3599 if (h != NULL)
3600 {
3601 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3602 h->non_got_ref = TRUE;
3603 }
25dbc73a 3604 break;
252b5132 3605
25dbc73a
AM
3606 /* Indirect .sdata2 relocation. */
3607 case R_PPC_EMB_SDA2I16:
3608 if (info->shared)
3609 {
3610 bad_shared_reloc (abfd, r_type);
3611 return FALSE;
3612 }
c9a2f333
AM
3613 if (htab->sdata[1].section == NULL
3614 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3615 &htab->sdata[1]))
3616 return FALSE;
76750a2f
AM
3617 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3618 h, rel))
25dbc73a 3619 return FALSE;
046183de
AM
3620 if (h != NULL)
3621 {
3622 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3623 h->non_got_ref = TRUE;
3624 }
25dbc73a 3625 break;
252b5132 3626
25dbc73a 3627 case R_PPC_SDAREL16:
046183de
AM
3628 if (info->shared)
3629 {
3630 bad_shared_reloc (abfd, r_type);
3631 return FALSE;
3632 }
3633 if (htab->sdata[0].sym == NULL
3634 && !create_sdata_sym (htab, &htab->sdata[0]))
3635 return FALSE;
3636 if (h != NULL)
3637 {
3638 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3639 h->non_got_ref = TRUE;
3640 }
3641 break;
3642
25dbc73a 3643 case R_PPC_EMB_SDA2REL:
046183de
AM
3644 if (info->shared)
3645 {
3646 bad_shared_reloc (abfd, r_type);
3647 return FALSE;
3648 }
3649 if (htab->sdata[1].sym == NULL
3650 && !create_sdata_sym (htab, &htab->sdata[1]))
3651 return FALSE;
3652 if (h != NULL)
3653 {
3654 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3655 h->non_got_ref = TRUE;
3656 }
3657 break;
3658
25dbc73a
AM
3659 case R_PPC_EMB_SDA21:
3660 case R_PPC_EMB_RELSDA:
046183de
AM
3661 if (info->shared)
3662 {
3663 bad_shared_reloc (abfd, r_type);
3664 return FALSE;
3665 }
3666 if (htab->sdata[0].sym == NULL
3667 && !create_sdata_sym (htab, &htab->sdata[0]))
3668 return FALSE;
3669 if (htab->sdata[1].sym == NULL
3670 && !create_sdata_sym (htab, &htab->sdata[1]))
3671 return FALSE;
3672 if (h != NULL)
3673 {
3674 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3675 h->non_got_ref = TRUE;
3676 }
3677 break;
3678
25dbc73a
AM
3679 case R_PPC_EMB_NADDR32:
3680 case R_PPC_EMB_NADDR16:
3681 case R_PPC_EMB_NADDR16_LO:
3682 case R_PPC_EMB_NADDR16_HI:
3683 case R_PPC_EMB_NADDR16_HA:
3684 if (info->shared)
3685 {
3686 bad_shared_reloc (abfd, r_type);
3687 return FALSE;
3688 }
4dc4a9a5 3689 if (h != NULL)
046183de 3690 h->non_got_ref = TRUE;
25dbc73a 3691 break;
252b5132 3692
25dbc73a 3693 case R_PPC_PLTREL24:
de972ffa 3694 if (h == NULL)
6d78d0b9
AM
3695 break;
3696 /* Fall through */
3697 case R_PPC_PLT32:
25dbc73a
AM
3698 case R_PPC_PLTREL32:
3699 case R_PPC_PLT16_LO:
3700 case R_PPC_PLT16_HI:
3701 case R_PPC_PLT16_HA:
3702#ifdef DEBUG
3703 fprintf (stderr, "Reloc requires a PLT entry\n");
3704#endif
3705 /* This symbol requires a procedure linkage table entry. We
3706 actually build the entry in finish_dynamic_symbol,
3707 because this might be a case of linking PIC code without
3708 linking in any dynamic objects, in which case we don't
3709 need to generate a procedure linkage table after all. */
7619e7c7 3710
25dbc73a
AM
3711 if (h == NULL)
3712 {
3713 /* It does not make sense to have a procedure linkage
3714 table entry for a local symbol. */
3715 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3716 "local symbol"),
3717 abfd,
3718 sec,
3719 (long) rel->r_offset,
3720 ppc_elf_howto_table[r_type]->name);
3721 bfd_set_error (bfd_error_bad_value);
3722 return FALSE;
3723 }
a6aa5195
AM
3724 else
3725 {
016687f8 3726 bfd_vma addend = 0;
ee05f2fe 3727
016687f8
AM
3728 if (r_type == R_PPC_PLTREL24)
3729 {
3730 ppc_elf_tdata (abfd)->makes_plt_call = 1;
a877a2b6
AM
3731 if (info->shared)
3732 addend = rel->r_addend;
016687f8 3733 }
a6aa5195 3734 h->needs_plt = 1;
3ec01793
AM
3735 if (!update_plt_info (abfd, &h->plt.plist,
3736 addend < 32768 ? NULL : got2, addend))
a6aa5195
AM
3737 return FALSE;
3738 }
25dbc73a 3739 break;
ee05f2fe 3740
25dbc73a
AM
3741 /* The following relocations don't need to propagate the
3742 relocation if linking a shared object since they are
3743 section relative. */
3744 case R_PPC_SECTOFF:
3745 case R_PPC_SECTOFF_LO:
3746 case R_PPC_SECTOFF_HI:
3747 case R_PPC_SECTOFF_HA:
3748 case R_PPC_DTPREL16:
3749 case R_PPC_DTPREL16_LO:
3750 case R_PPC_DTPREL16_HI:
3751 case R_PPC_DTPREL16_HA:
3752 case R_PPC_TOC16:
3753 break;
252b5132 3754
d7128ce4
AM
3755 case R_PPC_REL16:
3756 case R_PPC_REL16_LO:
3757 case R_PPC_REL16_HI:
3758 case R_PPC_REL16_HA:
016687f8 3759 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
3760 break;
3761
a6aa5195 3762 /* These are just markers. */
25dbc73a
AM
3763 case R_PPC_TLS:
3764 case R_PPC_EMB_MRKREF:
3765 case R_PPC_NONE:
3766 case R_PPC_max:
ceaf50a2
AM
3767 case R_PPC_RELAX32:
3768 case R_PPC_RELAX32PC:
3769 case R_PPC_RELAX32_PLT:
3770 case R_PPC_RELAX32PC_PLT:
25dbc73a 3771 break;
252b5132 3772
25dbc73a
AM
3773 /* These should only appear in dynamic objects. */
3774 case R_PPC_COPY:
3775 case R_PPC_GLOB_DAT:
3776 case R_PPC_JMP_SLOT:
3777 case R_PPC_RELATIVE:
e054468f 3778 case R_PPC_IRELATIVE:
25dbc73a 3779 break;
252b5132 3780
25dbc73a
AM
3781 /* These aren't handled yet. We'll report an error later. */
3782 case R_PPC_ADDR30:
3783 case R_PPC_EMB_RELSEC16:
3784 case R_PPC_EMB_RELST_LO:
3785 case R_PPC_EMB_RELST_HI:
3786 case R_PPC_EMB_RELST_HA:
3787 case R_PPC_EMB_BIT_FLD:
3788 break;
252b5132 3789
25dbc73a
AM
3790 /* This refers only to functions defined in the shared library. */
3791 case R_PPC_LOCAL24PC:
727fc41e 3792 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
3793 {
3794 htab->plt_type = PLT_OLD;
3795 htab->old_bfd = abfd;
3796 }
25dbc73a 3797 break;
252b5132 3798
25dbc73a
AM
3799 /* This relocation describes the C++ object vtable hierarchy.
3800 Reconstruct it for later use during GC. */
3801 case R_PPC_GNU_VTINHERIT:
3802 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3803 return FALSE;
3804 break;
252b5132 3805
25dbc73a
AM
3806 /* This relocation describes which C++ vtable entries are actually
3807 used. Record for later use during GC. */
3808 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
3809 BFD_ASSERT (h != NULL);
3810 if (h != NULL
3811 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
3812 return FALSE;
3813 break;
252b5132 3814
25dbc73a
AM
3815 /* We shouldn't really be seeing these. */
3816 case R_PPC_TPREL32:
1d483afe
AM
3817 case R_PPC_TPREL16:
3818 case R_PPC_TPREL16_LO:
3819 case R_PPC_TPREL16_HI:
3820 case R_PPC_TPREL16_HA:
3821 if (!info->executable)
25dbc73a
AM
3822 info->flags |= DF_STATIC_TLS;
3823 goto dodyn;
252b5132 3824
25dbc73a
AM
3825 /* Nor these. */
3826 case R_PPC_DTPMOD32:
3827 case R_PPC_DTPREL32:
3828 goto dodyn;
252b5132 3829
9edfd1af
AM
3830 case R_PPC_REL32:
3831 if (h == NULL
3832 && got2 != NULL
3833 && (sec->flags & SEC_CODE) != 0
a877a2b6 3834 && info->shared
4a3dc543 3835 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
3836 {
3837 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3838 the start of a function, which assembles to a REL32
3839 reference to .got2. If we detect one of these, then
3840 force the old PLT layout because the linker cannot
3841 reliably deduce the GOT pointer value needed for
3842 PLT call stubs. */
3843 asection *s;
87d72d41 3844 Elf_Internal_Sym *isym;
9edfd1af 3845
87d72d41
AM
3846 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3847 abfd, r_symndx);
3848 if (isym == NULL)
3849 return FALSE;
3850
3851 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
9edfd1af 3852 if (s == got2)
016687f8
AM
3853 {
3854 htab->plt_type = PLT_OLD;
3855 htab->old_bfd = abfd;
3856 }
9edfd1af 3857 }
7123df0e 3858 if (h == NULL || h == htab->elf.hgot)
fd38b44c 3859 break;
625af618
AM
3860 /* fall through */
3861
3862 case R_PPC_ADDR32:
3863 case R_PPC_ADDR16:
3864 case R_PPC_ADDR16_LO:
3865 case R_PPC_ADDR16_HI:
3866 case R_PPC_ADDR16_HA:
3867 case R_PPC_UADDR32:
3868 case R_PPC_UADDR16:
3869 if (h != NULL && !info->shared)
3870 {
3871 /* We may need a plt entry if the symbol turns out to be
3872 a function defined in a dynamic object. */
3ec01793 3873 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
625af618
AM
3874 return FALSE;
3875
3876 /* We may need a copy reloc too. */
3877 h->non_got_ref = 1;
3878 h->pointer_equality_needed = 1;
3879 }
3880 goto dodyn;
9edfd1af 3881
25dbc73a
AM
3882 case R_PPC_REL24:
3883 case R_PPC_REL14:
3884 case R_PPC_REL14_BRTAKEN:
3885 case R_PPC_REL14_BRNTAKEN:
d7128ce4 3886 if (h == NULL)
25dbc73a 3887 break;
7123df0e 3888 if (h == htab->elf.hgot)
d7128ce4 3889 {
7123df0e 3890 if (htab->plt_type == PLT_UNSET)
016687f8
AM
3891 {
3892 htab->plt_type = PLT_OLD;
3893 htab->old_bfd = abfd;
3894 }
d7128ce4
AM
3895 break;
3896 }
25dbc73a 3897 /* fall through */
ee05f2fe 3898
25dbc73a 3899 case R_PPC_ADDR24:
25dbc73a
AM
3900 case R_PPC_ADDR14:
3901 case R_PPC_ADDR14_BRTAKEN:
3902 case R_PPC_ADDR14_BRNTAKEN:
25dbc73a
AM
3903 if (h != NULL && !info->shared)
3904 {
3905 /* We may need a plt entry if the symbol turns out to be
3906 a function defined in a dynamic object. */
e054468f 3907 h->needs_plt = 1;
de972ffa 3908 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
a6aa5195 3909 return FALSE;
625af618 3910 break;
25dbc73a 3911 }
7619e7c7 3912
25dbc73a
AM
3913 dodyn:
3914 /* If we are creating a shared library, and this is a reloc
3915 against a global symbol, or a non PC relative reloc
3916 against a local symbol, then we need to copy the reloc
3917 into the shared library. However, if we are linking with
3918 -Bsymbolic, we do not need to copy a reloc against a
3919 global symbol which is defined in an object we are
3920 including in the link (i.e., DEF_REGULAR is set). At
3921 this point we have not seen all the input files, so it is
3922 possible that DEF_REGULAR is not set now but will be set
3923 later (it is never cleared). In case of a weak definition,
3924 DEF_REGULAR may be cleared later by a strong definition in
3925 a shared library. We account for that possibility below by
3926 storing information in the dyn_relocs field of the hash
3927 table entry. A similar situation occurs when creating
3928 shared libraries and symbol visibility changes render the
3929 symbol local.
7619e7c7 3930
25dbc73a
AM
3931 If on the other hand, we are creating an executable, we
3932 may need to keep relocations for symbols satisfied by a
3933 dynamic library if we manage to avoid copy relocs for the
3934 symbol. */
3935 if ((info->shared
1d483afe 3936 && (must_be_dyn_reloc (info, r_type)
25dbc73a
AM
3937 || (h != NULL
3938 && (! info->symbolic
3939 || h->root.type == bfd_link_hash_defweak
3940 || !h->def_regular))))
3941 || (ELIMINATE_COPY_RELOCS
3942 && !info->shared
25dbc73a
AM
3943 && h != NULL
3944 && (h->root.type == bfd_link_hash_defweak
de972ffa 3945 || !h->def_regular)))
25dbc73a
AM
3946 {
3947 struct ppc_elf_dyn_relocs *p;
3948 struct ppc_elf_dyn_relocs **head;
7619e7c7 3949
25dbc73a
AM
3950#ifdef DEBUG
3951 fprintf (stderr,
3952 "ppc_elf_check_relocs needs to "
3953 "create relocation for %s\n",
3954 (h && h->root.root.string
3955 ? h->root.root.string : "<unknown>"));
3956#endif
3957 if (sreloc == NULL)
3958 {
c9a2f333
AM
3959 if (htab->elf.dynobj == NULL)
3960 htab->elf.dynobj = abfd;
83bac4b0
NC
3961
3962 sreloc = _bfd_elf_make_dynamic_reloc_section
3963 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3964
25dbc73a 3965 if (sreloc == NULL)
83bac4b0 3966 return FALSE;
25dbc73a 3967 }
7619e7c7 3968
25dbc73a
AM
3969 /* If this is a global symbol, we count the number of
3970 relocations we need for this symbol. */
3971 if (h != NULL)
3972 {
3973 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3974 }
3975 else
3976 {
3977 /* Track dynamic relocs needed for local syms too.
3978 We really need local syms available to do this
3979 easily. Oh well. */
25dbc73a 3980 asection *s;
6edfbbad 3981 void *vpp;
87d72d41 3982 Elf_Internal_Sym *isym;
6edfbbad 3983
87d72d41
AM
3984 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3985 abfd, r_symndx);
3986 if (isym == NULL)
25dbc73a 3987 return FALSE;
7fce784e 3988
87d72d41
AM
3989 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3990 if (s == NULL)
3991 s = sec;
3992
6edfbbad
DJ
3993 vpp = &elf_section_data (s)->local_dynrel;
3994 head = (struct ppc_elf_dyn_relocs **) vpp;
25dbc73a 3995 }
7fce784e 3996
25dbc73a
AM
3997 p = *head;
3998 if (p == NULL || p->sec != sec)
3999 {
4000 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4001 if (p == NULL)
4002 return FALSE;
4003 p->next = *head;
4004 *head = p;
4005 p->sec = sec;
4006 p->count = 0;
4007 p->pc_count = 0;
4008 }
4009
4010 p->count += 1;
1d483afe 4011 if (!must_be_dyn_reloc (info, r_type))
25dbc73a 4012 p->pc_count += 1;
7619e7c7 4013 }
25dbc73a
AM
4014
4015 break;
7619e7c7
AM
4016 }
4017 }
ee05f2fe 4018
25dbc73a
AM
4019 return TRUE;
4020}
4021\f
34c8bcba
JM
4022
4023/* Merge object attributes from IBFD into OBFD. Raise an error if
4024 there are conflicting attributes. */
4025static bfd_boolean
4026ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4027{
c6e65352
DJ
4028 obj_attribute *in_attr, *in_attrs;
4029 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM
4030
4031 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4032 {
4033 /* This is the first object. Copy the attributes. */
4034 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4035
4036 /* Use the Tag_null value to indicate the attributes have been
4037 initialized. */
4038 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4039
4040 return TRUE;
4041 }
4042
c6e65352
DJ
4043 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4044 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4045
34c8bcba
JM
4046 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4047 non-conflicting ones. */
c6e65352
DJ
4048 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4049 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4050 if (in_attr->i != out_attr->i)
34c8bcba 4051 {
c6e65352
DJ
4052 out_attr->type = 1;
4053 if (out_attr->i == 0)
4054 out_attr->i = in_attr->i;
4055 else if (in_attr->i == 0)
34c8bcba 4056 ;
c6e65352 4057 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM
4058 _bfd_error_handler
4059 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3c7b9897
AM
4060 else if (out_attr->i == 1 && in_attr->i == 3)
4061 _bfd_error_handler
4062 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4063 obfd, ibfd);
4064 else if (out_attr->i == 3 && in_attr->i == 1)
4065 _bfd_error_handler
4066 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4067 ibfd, obfd);
4068 else if (out_attr->i == 3 && in_attr->i == 2)
4069 _bfd_error_handler
4070 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4071 ibfd, obfd);
4072 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
34c8bcba
JM
4073 _bfd_error_handler
4074 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3c7b9897 4075 else if (in_attr->i > 3)
34c8bcba
JM
4076 _bfd_error_handler
4077 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 4078 in_attr->i);
34c8bcba
JM
4079 else
4080 _bfd_error_handler
4081 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ
4082 out_attr->i);
4083 }
4084
4085 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4086 merge non-conflicting ones. */
4087 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4088 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4089 if (in_attr->i != out_attr->i)
4090 {
4091 const char *in_abi = NULL, *out_abi = NULL;
4092
4093 switch (in_attr->i)
4094 {
4095 case 1: in_abi = "generic"; break;
4096 case 2: in_abi = "AltiVec"; break;
4097 case 3: in_abi = "SPE"; break;
4098 }
4099
4100 switch (out_attr->i)
4101 {
4102 case 1: out_abi = "generic"; break;
4103 case 2: out_abi = "AltiVec"; break;
4104 case 3: out_abi = "SPE"; break;
4105 }
4106
4107 out_attr->type = 1;
4108 if (out_attr->i == 0)
4109 out_attr->i = in_attr->i;
4110 else if (in_attr->i == 0)
4111 ;
4112 /* For now, allow generic to transition to AltiVec or SPE
4113 without a warning. If GCC marked files with their stack
4114 alignment and used don't-care markings for files which are
4115 not affected by the vector ABI, we could warn about this
4116 case too. */
4117 else if (out_attr->i == 1)
4118 out_attr->i = in_attr->i;
4119 else if (in_attr->i == 1)
4120 ;
4121 else if (in_abi == NULL)
4122 _bfd_error_handler
4123 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4124 in_attr->i);
4125 else if (out_abi == NULL)
4126 _bfd_error_handler
4127 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4128 in_attr->i);
4129 else
4130 _bfd_error_handler
4131 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4132 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM
4133 }
4134
f82e0623
NF
4135 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4136 and merge non-conflicting ones. */
4137 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4138 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4139 if (in_attr->i != out_attr->i)
4140 {
4141 out_attr->type = 1;
4142 if (out_attr->i == 0)
4143 out_attr->i = in_attr->i;
4144 else if (in_attr->i == 0)
4145 ;
4146 else if (out_attr->i == 1 && in_attr->i == 2)
4147 _bfd_error_handler
4148 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4149 else if (out_attr->i == 2 && in_attr->i == 1)
4150 _bfd_error_handler
4151 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4152 else if (in_attr->i > 2)
4153 _bfd_error_handler
4154 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4155 in_attr->i);
4156 else
4157 _bfd_error_handler
4158 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4159 out_attr->i);
4160 }
4161
34c8bcba
JM
4162 /* Merge Tag_compatibility attributes and any common GNU ones. */
4163 _bfd_elf_merge_object_attributes (ibfd, obfd);
4164
4165 return TRUE;
4166}
4167
8853c3d3
AM
4168/* Merge backend specific data from an object file to the output
4169 object file when linking. */
4170
4171static bfd_boolean
4172ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4173{
4174 flagword old_flags;
4175 flagword new_flags;
4176 bfd_boolean error;
4177
0c8d6e5c 4178 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4179 return TRUE;
4180
4181 /* Check if we have the same endianess. */
4182 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4183 return FALSE;
4184
34c8bcba
JM
4185 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4186 return FALSE;
4187
8853c3d3
AM
4188 new_flags = elf_elfheader (ibfd)->e_flags;
4189 old_flags = elf_elfheader (obfd)->e_flags;
4190 if (!elf_flags_init (obfd))
4191 {
4192 /* First call, no flags set. */
4193 elf_flags_init (obfd) = TRUE;
4194 elf_elfheader (obfd)->e_flags = new_flags;
4195 }
4196
4197 /* Compatible flags are ok. */
4198 else if (new_flags == old_flags)
4199 ;
4200
4201 /* Incompatible flags. */
4202 else
4203 {
4204 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4205 to be linked with either. */
4206 error = FALSE;
4207 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4208 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4209 {
4210 error = TRUE;
4211 (*_bfd_error_handler)
4212 (_("%B: compiled with -mrelocatable and linked with "
4213 "modules compiled normally"), ibfd);
4214 }
4215 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4216 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4217 {
4218 error = TRUE;
4219 (*_bfd_error_handler)
4220 (_("%B: compiled normally and linked with "
4221 "modules compiled with -mrelocatable"), ibfd);
4222 }
4223
4224 /* The output is -mrelocatable-lib iff both the input files are. */
4225 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4226 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4227
4228 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4229 but each input file is either -mrelocatable or -mrelocatable-lib. */
4230 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4231 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4232 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4233 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4234
4235 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4236 any module uses it. */
4237 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4238
4239 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4240 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4241
4242 /* Warn about any other mismatches. */
4243 if (new_flags != old_flags)
4244 {
4245 error = TRUE;
4246 (*_bfd_error_handler)
4247 (_("%B: uses different e_flags (0x%lx) fields "
4248 "than previous modules (0x%lx)"),
4249 ibfd, (long) new_flags, (long) old_flags);
4250 }
4251
4252 if (error)
4253 {
4254 bfd_set_error (bfd_error_bad_value);
4255 return FALSE;
4256 }
4257 }
4258
4259 return TRUE;
4260}
4261\f
d7128ce4
AM
4262/* Choose which PLT scheme to use, and set .plt flags appropriately.
4263 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4264int
4265ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4266 struct bfd_link_info *info,
016687f8 4267 enum ppc_elf_plt_type plt_style,
0ba07910 4268 int emit_stub_syms)
d7128ce4
AM
4269{
4270 struct ppc_elf_link_hash_table *htab;
9d8504b1 4271 flagword flags;
d7128ce4
AM
4272
4273 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4274
4275 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4276 {
4277 if (plt_style == PLT_OLD)
4278 htab->plt_type = PLT_OLD;
4279 else
4280 {
4281 bfd *ibfd;
4282 enum ppc_elf_plt_type plt_type = plt_style;
4283
4284 /* Look through the reloc flags left by ppc_elf_check_relocs.
4285 Use the old style bss plt if a file makes plt calls
4286 without using the new relocs, and if ld isn't given
4287 --secure-plt and we never see REL16 relocs. */
4288 if (plt_type == PLT_UNSET)
4289 plt_type = PLT_OLD;
60b31e8d 4290 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
0c8d6e5c 4291 if (is_ppc_elf (ibfd))
016687f8
AM
4292 {
4293 if (ppc_elf_tdata (ibfd)->has_rel16)
4294 plt_type = PLT_NEW;
4295 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4296 {
4297 plt_type = PLT_OLD;
4298 htab->old_bfd = ibfd;
4299 break;
4300 }
4301 }
4302 htab->plt_type = plt_type;
4303 }
4304 }
4305 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4306 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
d7128ce4 4307
0ba07910
AM
4308 htab->emit_stub_syms = emit_stub_syms;
4309
4a3dc543 4310 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4311
4a3dc543 4312 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
4313 {
4314 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4315 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
4316
4317 /* The new PLT is a loaded section. */
4318 if (htab->plt != NULL
4319 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4320 return -1;
4321
4322 /* The new GOT is not executable. */
4323 if (htab->got != NULL
4324 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4325 return -1;
d7128ce4
AM
4326 }
4327 else
4328 {
4329 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
4330 if (htab->glink != NULL
4331 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4332 return -1;
d7128ce4 4333 }
4a3dc543 4334 return htab->plt_type == PLT_NEW;
d7128ce4
AM
4335}
4336\f
25dbc73a
AM
4337/* Return the section that should be marked against GC for a given
4338 relocation. */
586119b3 4339
25dbc73a
AM
4340static asection *
4341ppc_elf_gc_mark_hook (asection *sec,
07adf181 4342 struct bfd_link_info *info,
25dbc73a
AM
4343 Elf_Internal_Rela *rel,
4344 struct elf_link_hash_entry *h,
4345 Elf_Internal_Sym *sym)
4346{
4347 if (h != NULL)
07adf181
AM
4348 switch (ELF32_R_TYPE (rel->r_info))
4349 {
4350 case R_PPC_GNU_VTINHERIT:
4351 case R_PPC_GNU_VTENTRY:
4352 return NULL;
4353 }
4354
4355 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 4356}
a876ecf9 4357
25dbc73a
AM
4358/* Update the got, plt and dynamic reloc reference counts for the
4359 section being removed. */
4360
4361static bfd_boolean
4362ppc_elf_gc_sweep_hook (bfd *abfd,
4363 struct bfd_link_info *info,
4364 asection *sec,
4365 const Elf_Internal_Rela *relocs)
4366{
4367 struct ppc_elf_link_hash_table *htab;
4368 Elf_Internal_Shdr *symtab_hdr;
4369 struct elf_link_hash_entry **sym_hashes;
4370 bfd_signed_vma *local_got_refcounts;
4371 const Elf_Internal_Rela *rel, *relend;
a6aa5195 4372 asection *got2;
25dbc73a 4373
7dda2462
TG
4374 if (info->relocatable)
4375 return TRUE;
4376
c87b5a93
AM
4377 if ((sec->flags & SEC_ALLOC) == 0)
4378 return TRUE;
4379
25dbc73a
AM
4380 elf_section_data (sec)->local_dynrel = NULL;
4381
4382 htab = ppc_elf_hash_table (info);
0ffa91dd 4383 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
4384 sym_hashes = elf_sym_hashes (abfd);
4385 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 4386 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4387
4388 relend = relocs + sec->reloc_count;
4389 for (rel = relocs; rel < relend; rel++)
4390 {
4391 unsigned long r_symndx;
4392 enum elf_ppc_reloc_type r_type;
4393 struct elf_link_hash_entry *h = NULL;
4394
4395 r_symndx = ELF32_R_SYM (rel->r_info);
4396 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 4397 {
25dbc73a
AM
4398 struct ppc_elf_dyn_relocs **pp, *p;
4399 struct ppc_elf_link_hash_entry *eh;
4400
4401 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4402 while (h->root.type == bfd_link_hash_indirect
4403 || h->root.type == bfd_link_hash_warning)
4404 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4405 eh = (struct ppc_elf_link_hash_entry *) h;
4406
4407 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4408 if (p->sec == sec)
4409 {
4410 /* Everything must go for SEC. */
4411 *pp = p->next;
4412 break;
4413 }
a876ecf9 4414 }
ee05f2fe 4415
25dbc73a 4416 r_type = ELF32_R_TYPE (rel->r_info);
de972ffa
AM
4417 if (!htab->is_vxworks
4418 && h == NULL
4419 && local_got_refcounts != NULL
4420 && (!info->shared
4421 || is_branch_reloc (r_type)))
e054468f 4422 {
de972ffa
AM
4423 struct plt_entry **local_plt = (struct plt_entry **)
4424 (local_got_refcounts + symtab_hdr->sh_info);
4425 char *local_got_tls_masks = (char *)
4426 (local_plt + symtab_hdr->sh_info);
4427 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
e054468f 4428 {
de972ffa 4429 struct plt_entry **ifunc = local_plt + r_symndx;
a877a2b6
AM
4430 bfd_vma addend = 0;
4431 struct plt_entry *ent;
4432
4433 if (r_type == R_PPC_PLTREL24 && info->shared)
4434 addend = rel->r_addend;
4435 ent = find_plt_ent (ifunc, got2, addend);
e054468f
AM
4436 if (ent->plt.refcount > 0)
4437 ent->plt.refcount -= 1;
4438 continue;
4439 }
4440 }
4441
25dbc73a 4442 switch (r_type)
ee05f2fe 4443 {
25dbc73a
AM
4444 case R_PPC_GOT_TLSLD16:
4445 case R_PPC_GOT_TLSLD16_LO:
4446 case R_PPC_GOT_TLSLD16_HI:
4447 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4448 case R_PPC_GOT_TLSGD16:
4449 case R_PPC_GOT_TLSGD16_LO:
4450 case R_PPC_GOT_TLSGD16_HI:
4451 case R_PPC_GOT_TLSGD16_HA:
4452 case R_PPC_GOT_TPREL16:
4453 case R_PPC_GOT_TPREL16_LO:
4454 case R_PPC_GOT_TPREL16_HI:
4455 case R_PPC_GOT_TPREL16_HA:
4456 case R_PPC_GOT_DTPREL16:
4457 case R_PPC_GOT_DTPREL16_LO:
4458 case R_PPC_GOT_DTPREL16_HI:
4459 case R_PPC_GOT_DTPREL16_HA:
4460 case R_PPC_GOT16:
4461 case R_PPC_GOT16_LO:
4462 case R_PPC_GOT16_HI:
4463 case R_PPC_GOT16_HA:
4464 if (h != NULL)
ee05f2fe 4465 {
25dbc73a
AM
4466 if (h->got.refcount > 0)
4467 h->got.refcount--;
ee05f2fe 4468 }
25dbc73a
AM
4469 else if (local_got_refcounts != NULL)
4470 {
4471 if (local_got_refcounts[r_symndx] > 0)
4472 local_got_refcounts[r_symndx]--;
4473 }
4474 break;
ee05f2fe 4475
25dbc73a
AM
4476 case R_PPC_REL24:
4477 case R_PPC_REL14:
4478 case R_PPC_REL14_BRTAKEN:
4479 case R_PPC_REL14_BRNTAKEN:
4480 case R_PPC_REL32:
3b36f7e6 4481 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM
4482 break;
4483 /* Fall thru */
ee05f2fe 4484
25dbc73a
AM
4485 case R_PPC_ADDR32:
4486 case R_PPC_ADDR24:
4487 case R_PPC_ADDR16:
4488 case R_PPC_ADDR16_LO:
4489 case R_PPC_ADDR16_HI:
4490 case R_PPC_ADDR16_HA:
4491 case R_PPC_ADDR14:
4492 case R_PPC_ADDR14_BRTAKEN:
4493 case R_PPC_ADDR14_BRNTAKEN:
4494 case R_PPC_UADDR32:
4495 case R_PPC_UADDR16:
87538722
AM
4496 if (info->shared)
4497 break;
4498
25dbc73a
AM
4499 case R_PPC_PLT32:
4500 case R_PPC_PLTREL24:
87538722 4501 case R_PPC_PLTREL32:
25dbc73a
AM
4502 case R_PPC_PLT16_LO:
4503 case R_PPC_PLT16_HI:
4504 case R_PPC_PLT16_HA:
4505 if (h != NULL)
4506 {
a877a2b6
AM
4507 bfd_vma addend = 0;
4508 struct plt_entry *ent;
4509
4510 if (r_type == R_PPC_PLTREL24 && info->shared)
4511 addend = rel->r_addend;
4512 ent = find_plt_ent (&h->plt.plist, got2, addend);
a6aa5195
AM
4513 if (ent->plt.refcount > 0)
4514 ent->plt.refcount -= 1;
25dbc73a
AM
4515 }
4516 break;
ee05f2fe 4517
25dbc73a
AM
4518 default:
4519 break;
4520 }
7fce784e 4521 }
7fce784e
AS
4522 return TRUE;
4523}
25dbc73a 4524\f
3a71aa26
AM
4525/* Set plt output section type, htab->tls_get_addr, and call the
4526 generic ELF tls_setup function. */
7fce784e 4527
25dbc73a
AM
4528asection *
4529ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 4530{
25dbc73a 4531 struct ppc_elf_link_hash_table *htab;
7fce784e 4532
25dbc73a 4533 htab = ppc_elf_hash_table (info);
4a3dc543 4534 if (htab->plt_type == PLT_NEW
d7128ce4
AM
4535 && htab->plt != NULL
4536 && htab->plt->output_section != NULL)
4537 {
4538 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4539 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4540 }
4541
25dbc73a
AM
4542 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4543 FALSE, FALSE, TRUE);
25dbc73a 4544 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
4545}
4546
3a71aa26
AM
4547/* Return TRUE iff REL is a branch reloc with a global symbol matching
4548 HASH. */
4549
4550static bfd_boolean
4551branch_reloc_hash_match (const bfd *ibfd,
4552 const Elf_Internal_Rela *rel,
4553 const struct elf_link_hash_entry *hash)
4554{
4555 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4556 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4557 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4558
e054468f 4559 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
3a71aa26
AM
4560 {
4561 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4562 struct elf_link_hash_entry *h;
4563
4564 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4565 while (h->root.type == bfd_link_hash_indirect
4566 || h->root.type == bfd_link_hash_warning)
4567 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4568 if (h == hash)
4569 return TRUE;
4570 }
4571 return FALSE;
4572}
4573
25dbc73a
AM
4574/* Run through all the TLS relocs looking for optimization
4575 opportunities. */
252b5132 4576
25dbc73a
AM
4577bfd_boolean
4578ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4579 struct bfd_link_info *info)
252b5132 4580{
7fce784e 4581 bfd *ibfd;
25dbc73a
AM
4582 asection *sec;
4583 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 4584 int pass;
252b5132 4585
1d483afe 4586 if (info->relocatable || !info->executable)
25dbc73a 4587 return TRUE;
252b5132 4588
7619e7c7 4589 htab = ppc_elf_hash_table (info);
b7fcf6f6
AM
4590 /* Make two passes through the relocs. First time check that tls
4591 relocs involved in setting up a tls_get_addr call are indeed
4592 followed by such a call. If they are not, exclude them from
4593 the optimizations done on the second pass. */
4594 for (pass = 0; pass < 2; ++pass)
4595 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4596 {
4597 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 4598 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7619e7c7 4599
b7fcf6f6
AM
4600 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4601 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4602 {
4603 Elf_Internal_Rela *relstart, *rel, *relend;
252b5132 4604
b7fcf6f6
AM
4605 /* Read the relocations. */
4606 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4607 info->keep_memory);
4608 if (relstart == NULL)
4609 return FALSE;
7619e7c7 4610
b7fcf6f6
AM
4611 relend = relstart + sec->reloc_count;
4612 for (rel = relstart; rel < relend; rel++)
4613 {
4614 enum elf_ppc_reloc_type r_type;
4615 unsigned long r_symndx;
4616 struct elf_link_hash_entry *h = NULL;
4617 char *tls_mask;
4618 char tls_set, tls_clear;
4619 bfd_boolean is_local;
4620 int expecting_tls_get_addr;
4621 bfd_signed_vma *got_count;
4622
4623 r_symndx = ELF32_R_SYM (rel->r_info);
4624 if (r_symndx >= symtab_hdr->sh_info)
4625 {
4626 struct elf_link_hash_entry **sym_hashes;
7fce784e 4627
b7fcf6f6
AM
4628 sym_hashes = elf_sym_hashes (ibfd);
4629 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4630 while (h->root.type == bfd_link_hash_indirect
4631 || h->root.type == bfd_link_hash_warning)
4632 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4633 }
7619e7c7 4634
b7fcf6f6
AM
4635 expecting_tls_get_addr = 0;
4636 is_local = FALSE;
4637 if (h == NULL
4638 || !h->def_dynamic)
4639 is_local = TRUE;
7619e7c7 4640
b7fcf6f6
AM
4641 r_type = ELF32_R_TYPE (rel->r_info);
4642 switch (r_type)
4643 {
4644 case R_PPC_GOT_TLSLD16:
4645 case R_PPC_GOT_TLSLD16_LO:
4646 expecting_tls_get_addr = 1;
4647 /* Fall thru */
4648
4649 case R_PPC_GOT_TLSLD16_HI:
4650 case R_PPC_GOT_TLSLD16_HA:
4651 /* These relocs should never be against a symbol
4652 defined in a shared lib. Leave them alone if
4653 that turns out to be the case. */
4654 if (!is_local)
4655 continue;
4656
4657 /* LD -> LE */
4658 tls_set = 0;
4659 tls_clear = TLS_LD;
4660 break;
4661
4662 case R_PPC_GOT_TLSGD16:
4663 case R_PPC_GOT_TLSGD16_LO:
4664 expecting_tls_get_addr = 1;
4665 /* Fall thru */
4666
4667 case R_PPC_GOT_TLSGD16_HI:
4668 case R_PPC_GOT_TLSGD16_HA:
4669 if (is_local)
4670 /* GD -> LE */
4671 tls_set = 0;
4672 else
4673 /* GD -> IE */
4674 tls_set = TLS_TLS | TLS_TPRELGD;
4675 tls_clear = TLS_GD;
4676 break;
4677
4678 case R_PPC_GOT_TPREL16:
4679 case R_PPC_GOT_TPREL16_LO:
4680 case R_PPC_GOT_TPREL16_HI:
4681 case R_PPC_GOT_TPREL16_HA:
4682 if (is_local)
4683 {
4684 /* IE -> LE */
4685 tls_set = 0;
4686 tls_clear = TLS_TPREL;
4687 break;
4688 }
4689 else
4690 continue;
4691
4692 default:
25dbc73a 4693 continue;
b7fcf6f6 4694 }
25dbc73a 4695
b7fcf6f6
AM
4696 if (pass == 0)
4697 {
727fc41e
AM
4698 if (!expecting_tls_get_addr
4699 || !sec->has_tls_get_addr_call)
b7fcf6f6 4700 continue;
25dbc73a 4701
3a71aa26
AM
4702 if (rel + 1 < relend
4703 && branch_reloc_hash_match (ibfd, rel + 1,
4704 htab->tls_get_addr))
4705 continue;
25dbc73a 4706
b7fcf6f6
AM
4707 /* Uh oh, we didn't find the expected call. We
4708 could just mark this symbol to exclude it
4709 from tls optimization but it's safer to skip
4710 the entire section. */
4711 sec->has_tls_reloc = 0;
4712 break;
4713 }
25dbc73a 4714
b7fcf6f6
AM
4715 if (h != NULL)
4716 {
4717 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4718 got_count = &h->got.refcount;
4719 }
4720 else
4721 {
4722 Elf_Internal_Sym *sym;
4723 bfd_signed_vma *lgot_refs;
e054468f 4724 struct plt_entry **local_plt;
b7fcf6f6 4725 char *lgot_masks;
25dbc73a 4726
b7fcf6f6
AM
4727 if (locsyms == NULL)
4728 {
4729 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4730 if (locsyms == NULL)
4731 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4732 symtab_hdr->sh_info,
4733 0, NULL, NULL, NULL);
4734 if (locsyms == NULL)
4735 {
4736 if (elf_section_data (sec)->relocs != relstart)
4737 free (relstart);
4738 return FALSE;
4739 }
4740 }
4741 sym = locsyms + r_symndx;
4742 lgot_refs = elf_local_got_refcounts (ibfd);
4743 if (lgot_refs == NULL)
4744 abort ();
e054468f
AM
4745 local_plt = (struct plt_entry **)
4746 (lgot_refs + symtab_hdr->sh_info);
4747 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
b7fcf6f6
AM
4748 tls_mask = &lgot_masks[r_symndx];
4749 got_count = &lgot_refs[r_symndx];
4750 }
25dbc73a 4751
b7fcf6f6
AM
4752 if (tls_set == 0)
4753 {
4754 /* We managed to get rid of a got entry. */
4755 if (*got_count > 0)
4756 *got_count -= 1;
4757 }
25dbc73a 4758
b7fcf6f6
AM
4759 if (expecting_tls_get_addr)
4760 {
4761 struct plt_entry *ent;
25dbc73a 4762
3ec01793
AM
4763 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4764 NULL, 0);
b7fcf6f6
AM
4765 if (ent != NULL && ent->plt.refcount > 0)
4766 ent->plt.refcount -= 1;
4767 }
25dbc73a 4768
b7fcf6f6
AM
4769 *tls_mask |= tls_set;
4770 *tls_mask &= ~tls_clear;
4771 }
25dbc73a 4772
b7fcf6f6
AM
4773 if (elf_section_data (sec)->relocs != relstart)
4774 free (relstart);
4775 }
4776
4777 if (locsyms != NULL
4778 && (symtab_hdr->contents != (unsigned char *) locsyms))
4779 {
4780 if (!info->keep_memory)
4781 free (locsyms);
4782 else
4783 symtab_hdr->contents = (unsigned char *) locsyms;
4784 }
4785 }
25dbc73a
AM
4786 return TRUE;
4787}
4788\f
625af618
AM
4789/* Return true if we have dynamic relocs that apply to read-only sections. */
4790
4791static bfd_boolean
4792readonly_dynrelocs (struct elf_link_hash_entry *h)
4793{
4794 struct ppc_elf_dyn_relocs *p;
4795
4796 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4797 {
4798 asection *s = p->sec->output_section;
4799
4800 if (s != NULL
4801 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4802 == (SEC_READONLY | SEC_ALLOC)))
4803 return TRUE;
4804 }
4805 return FALSE;
4806}
4807
25dbc73a
AM
4808/* Adjust a symbol defined by a dynamic object and referenced by a
4809 regular object. The current definition is in some section of the
4810 dynamic object, but we're not including those sections. We have to
4811 change the definition to something the rest of the link can
4812 understand. */
7fce784e 4813
25dbc73a
AM
4814static bfd_boolean
4815ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4816 struct elf_link_hash_entry *h)
4817{
4818 struct ppc_elf_link_hash_table *htab;
4819 asection *s;
7fce784e 4820
25dbc73a
AM
4821#ifdef DEBUG
4822 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4823 h->root.root.string);
4824#endif
252b5132 4825
25dbc73a
AM
4826 /* Make sure we know what is going on here. */
4827 htab = ppc_elf_hash_table (info);
4828 BFD_ASSERT (htab->elf.dynobj != NULL
4829 && (h->needs_plt
4830 || h->u.weakdef != NULL
4831 || (h->def_dynamic
4832 && h->ref_regular
4833 && !h->def_regular)));
252b5132 4834
25dbc73a
AM
4835 /* Deal with function syms. */
4836 if (h->type == STT_FUNC
e054468f 4837 || h->type == STT_GNU_IFUNC
25dbc73a
AM
4838 || h->needs_plt)
4839 {
4840 /* Clear procedure linkage table information for any symbol that
4841 won't need a .plt entry. */
a6aa5195
AM
4842 struct plt_entry *ent;
4843 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4844 if (ent->plt.refcount > 0)
4845 break;
4846 if (ent == NULL
e054468f
AM
4847 || (h->type != STT_GNU_IFUNC
4848 && (SYMBOL_CALLS_LOCAL (info, h)
4849 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4850 && h->root.type == bfd_link_hash_undefweak))))
252b5132 4851 {
25dbc73a 4852 /* A PLT entry is not required/allowed when:
252b5132 4853
25dbc73a
AM
4854 1. We are not using ld.so; because then the PLT entry
4855 can't be set up, so we can't use one. In this case,
4856 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 4857
25dbc73a
AM
4858 2. GC has rendered the entry unused.
4859
4860 3. We know for certain that a call to this symbol
4861 will go to this object, or will remain undefined. */
a6aa5195 4862 h->plt.plist = NULL;
25dbc73a
AM
4863 h->needs_plt = 0;
4864 }
625af618
AM
4865 else
4866 {
25f23106
AM
4867 /* After adjust_dynamic_symbol, non_got_ref set in the
4868 non-shared case means that we have allocated space in
4869 .dynbss for the symbol and thus dyn_relocs for this
4870 symbol should be discarded.
625af618
AM
4871 If we get here we know we are making a PLT entry for this
4872 symbol, and in an executable we'd normally resolve
4873 relocations against this symbol to the PLT entry. Allow
4874 dynamic relocs if the reference is weak, and the dynamic
4875 relocs will not cause text relocation. */
4876 if (!h->ref_regular_nonweak
4877 && h->non_got_ref
25f23106 4878 && h->type != STT_GNU_IFUNC
625af618
AM
4879 && !htab->is_vxworks
4880 && !ppc_elf_hash_entry (h)->has_sda_refs
4881 && !readonly_dynrelocs (h))
4882 h->non_got_ref = 0;
4883 }
25dbc73a 4884 return TRUE;
252b5132 4885 }
25dbc73a 4886 else
a6aa5195 4887 h->plt.plist = NULL;
252b5132 4888
25dbc73a
AM
4889 /* If this is a weak symbol, and there is a real definition, the
4890 processor independent code will have arranged for us to see the
4891 real definition first, and we can just use the same value. */
4892 if (h->u.weakdef != NULL)
252b5132 4893 {
25dbc73a
AM
4894 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4895 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4896 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4897 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4898 if (ELIMINATE_COPY_RELOCS)
4899 h->non_got_ref = h->u.weakdef->non_got_ref;
4900 return TRUE;
4901 }
dc810e39 4902
25dbc73a
AM
4903 /* This is a reference to a symbol defined by a dynamic object which
4904 is not a function. */
252b5132 4905
25dbc73a
AM
4906 /* If we are creating a shared library, we must presume that the
4907 only references to the symbol are via the global offset table.
4908 For such cases we need not do anything here; the relocations will
4909 be handled correctly by relocate_section. */
4910 if (info->shared)
4911 return TRUE;
252b5132 4912
25dbc73a
AM
4913 /* If there are no references to this symbol that do not use the
4914 GOT, we don't need to generate a copy reloc. */
4915 if (!h->non_got_ref)
4916 return TRUE;
4917
cfd2c773
NS
4918 /* If we didn't find any dynamic relocs in read-only sections, then
4919 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4920 We can't do this if there are any small data relocations. This
4921 doesn't work on VxWorks, where we can not have dynamic
4922 relocations (other than copy and jump slot relocations) in an
4923 executable. */
4dc4a9a5 4924 if (ELIMINATE_COPY_RELOCS
cfd2c773 4925 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
4926 && !htab->is_vxworks
4927 && !h->def_regular
4928 && !readonly_dynrelocs (h))
25dbc73a 4929 {
625af618
AM
4930 h->non_got_ref = 0;
4931 return TRUE;
252b5132
RH
4932 }
4933
909272ee
AM
4934 if (h->size == 0)
4935 {
4936 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4937 h->root.root.string);
4938 return TRUE;
4939 }
4940
25dbc73a
AM
4941 /* We must allocate the symbol in our .dynbss section, which will
4942 become part of the .bss section of the executable. There will be
4943 an entry for this symbol in the .dynsym section. The dynamic
4944 object will contain position independent code, so all references
4945 from the dynamic object to this symbol will go through the global
4946 offset table. The dynamic linker will use the .dynsym entry to
4947 determine the address it must put in the global offset table, so
4948 both the dynamic object and the regular object will refer to the
4949 same memory location for the variable.
4950
4dc4a9a5
DJ
4951 Of course, if the symbol is referenced using SDAREL relocs, we
4952 must instead allocate it in .sbss. */
25dbc73a 4953
4dc4a9a5 4954 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4955 s = htab->dynsbss;
4956 else
4957 s = htab->dynbss;
4958 BFD_ASSERT (s != NULL);
4959
4960 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4961 copy the initial value out of the dynamic object and into the
4962 runtime process image. We need to remember the offset into the
4963 .rela.bss section we are going to use. */
4964 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4965 {
4966 asection *srel;
4967
4dc4a9a5 4968 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4969 srel = htab->relsbss;
4970 else
4971 srel = htab->relbss;
4972 BFD_ASSERT (srel != NULL);
4973 srel->size += sizeof (Elf32_External_Rela);
4974 h->needs_copy = 1;
4975 }
7619e7c7 4976
027297b7 4977 return _bfd_elf_adjust_dynamic_copy (h, s);
25dbc73a
AM
4978}
4979\f
ac39eb42
AM
4980/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4981 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4982 specifying the addend on the plt relocation. For -fpic code, the sym
4983 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4984 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
4985
4986static bfd_boolean
4987add_stub_sym (struct plt_entry *ent,
4988 struct elf_link_hash_entry *h,
ac39eb42 4989 struct bfd_link_info *info)
0ba07910
AM
4990{
4991 struct elf_link_hash_entry *sh;
4992 size_t len1, len2, len3;
4993 char *name;
ac39eb42
AM
4994 const char *stub;
4995 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4996
a877a2b6 4997 if (info->shared)
ac39eb42
AM
4998 stub = ".plt_pic32.";
4999 else
5000 stub = ".plt_call32.";
0ba07910
AM
5001
5002 len1 = strlen (h->root.root.string);
ac39eb42 5003 len2 = strlen (stub);
0ba07910
AM
5004 len3 = 0;
5005 if (ent->sec)
5006 len3 = strlen (ent->sec->name);
ac39eb42 5007 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
5008 if (name == NULL)
5009 return FALSE;
5010 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5011 if (ent->sec)
5012 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
5013 memcpy (name + 8 + len3, stub, len2);
5014 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
5015 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5016 if (sh == NULL)
5017 return FALSE;
5018 if (sh->root.type == bfd_link_hash_new)
5019 {
5020 sh->root.type = bfd_link_hash_defined;
5021 sh->root.u.def.section = htab->glink;
5022 sh->root.u.def.value = ent->glink_offset;
5023 sh->ref_regular = 1;
5024 sh->def_regular = 1;
5025 sh->ref_regular_nonweak = 1;
5026 sh->forced_local = 1;
5027 sh->non_elf = 0;
5028 }
5029 return TRUE;
5030}
5031
3b36f7e6
AM
5032/* Allocate NEED contiguous space in .got, and return the offset.
5033 Handles allocation of the got header when crossing 32k. */
5034
5035static bfd_vma
5036allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5037{
5038 bfd_vma where;
4a3dc543 5039 unsigned int max_before_header;
3b36f7e6 5040
4a3dc543 5041 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
5042 {
5043 where = htab->got->size;
5044 htab->got->size += need;
5045 }
3b36f7e6
AM
5046 else
5047 {
4a3dc543
RS
5048 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5049 if (need <= htab->got_gap)
3b36f7e6 5050 {
4a3dc543
RS
5051 where = max_before_header - htab->got_gap;
5052 htab->got_gap -= need;
5053 }
5054 else
5055 {
5056 if (htab->got->size + need > max_before_header
5057 && htab->got->size <= max_before_header)
5058 {
5059 htab->got_gap = max_before_header - htab->got->size;
5060 htab->got->size = max_before_header + htab->got_header_size;
5061 }
5062 where = htab->got->size;
5063 htab->got->size += need;
3b36f7e6 5064 }
3b36f7e6
AM
5065 }
5066 return where;
5067}
5068
25dbc73a 5069/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 5070
b34976b6 5071static bfd_boolean
25dbc73a 5072allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 5073{
25dbc73a
AM
5074 struct bfd_link_info *info = inf;
5075 struct ppc_elf_link_hash_entry *eh;
7619e7c7 5076 struct ppc_elf_link_hash_table *htab;
25dbc73a 5077 struct ppc_elf_dyn_relocs *p;
252b5132 5078
25dbc73a 5079 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5080 return TRUE;
252b5132 5081
25dbc73a
AM
5082 if (h->root.type == bfd_link_hash_warning)
5083 /* When warning symbols are created, they **replace** the "real"
5084 entry in the hash table, thus we never get to see the real
5085 symbol in a hash traversal. So look at it now. */
5086 h = (struct elf_link_hash_entry *) h->root.u.i.link;
e47cd125 5087
7619e7c7 5088 htab = ppc_elf_hash_table (info);
e054468f
AM
5089 if (htab->elf.dynamic_sections_created
5090 || h->type == STT_GNU_IFUNC)
252b5132 5091 {
a6aa5195
AM
5092 struct plt_entry *ent;
5093 bfd_boolean doneone = FALSE;
28e99bb6 5094 bfd_vma plt_offset = 0, glink_offset = 0;
e054468f 5095 bfd_boolean dyn;
28e99bb6 5096
a6aa5195
AM
5097 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5098 if (ent->plt.refcount > 0)
5099 {
5100 /* Make sure this symbol is output as a dynamic symbol. */
5101 if (h->dynindx == -1
e054468f
AM
5102 && !h->forced_local
5103 && !h->def_regular
5104 && htab->elf.dynamic_sections_created)
a6aa5195
AM
5105 {
5106 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5107 return FALSE;
5108 }
252b5132 5109
e054468f 5110 dyn = htab->elf.dynamic_sections_created;
a6aa5195 5111 if (info->shared
e054468f
AM
5112 || h->type == STT_GNU_IFUNC
5113 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
a6aa5195
AM
5114 {
5115 asection *s = htab->plt;
25f23106 5116 if (!dyn || h->dynindx == -1)
e054468f 5117 s = htab->iplt;
7619e7c7 5118
25f23106 5119 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
a6aa5195 5120 {
a6aa5195 5121 if (!doneone)
28e99bb6
AM
5122 {
5123 plt_offset = s->size;
5124 s->size += 4;
5125 }
5126 ent->plt.offset = plt_offset;
d7128ce4 5127
a6aa5195 5128 s = htab->glink;
a877a2b6 5129 if (!doneone || info->shared)
28e99bb6
AM
5130 {
5131 glink_offset = s->size;
5132 s->size += GLINK_ENTRY_SIZE;
5133 }
5134 if (!doneone
5135 && !info->shared
625af618 5136 && h->def_dynamic
a6aa5195
AM
5137 && !h->def_regular)
5138 {
5139 h->root.u.def.section = s;
28e99bb6 5140 h->root.u.def.value = glink_offset;
a6aa5195 5141 }
28e99bb6 5142 ent->glink_offset = glink_offset;
0ba07910
AM
5143
5144 if (htab->emit_stub_syms
ac39eb42 5145 && !add_stub_sym (ent, h, info))
0ba07910 5146 return FALSE;
a6aa5195
AM
5147 }
5148 else
5149 {
a6aa5195
AM
5150 if (!doneone)
5151 {
28e99bb6
AM
5152 /* If this is the first .plt entry, make room
5153 for the special first entry. */
5154 if (s->size == 0)
9d8504b1 5155 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
5156
5157 /* The PowerPC PLT is actually composed of two
5158 parts, the first part is 2 words (for a load
5159 and a jump), and then there is a remaining
5160 word available at the end. */
9d8504b1
PB
5161 plt_offset = (htab->plt_initial_entry_size
5162 + (htab->plt_slot_size
5163 * ((s->size
5164 - htab->plt_initial_entry_size)
5165 / htab->plt_entry_size)));
28e99bb6
AM
5166
5167 /* If this symbol is not defined in a regular
5168 file, and we are not generating a shared
de972ffa
AM
5169 library, then set the symbol to this location
5170 in the .plt. This is to avoid text
5171 relocations, and is required to make
28e99bb6
AM
5172 function pointers compare as equal between
5173 the normal executable and the shared library. */
5174 if (! info->shared
625af618 5175 && h->def_dynamic
28e99bb6
AM
5176 && !h->def_regular)
5177 {
5178 h->root.u.def.section = s;
5179 h->root.u.def.value = plt_offset;
5180 }
5181
9d8504b1
PB
5182 /* Make room for this entry. */
5183 s->size += htab->plt_entry_size;
5184 /* After the 8192nd entry, room for two entries
5185 is allocated. */
4a3dc543 5186 if (htab->plt_type == PLT_OLD
9d8504b1
PB
5187 && (s->size - htab->plt_initial_entry_size)
5188 / htab->plt_entry_size
5189 > PLT_NUM_SINGLE_ENTRIES)
5190 s->size += htab->plt_entry_size;
a6aa5195 5191 }
28e99bb6 5192 ent->plt.offset = plt_offset;
a6aa5195 5193 }
25dbc73a 5194
a6aa5195
AM
5195 /* We also need to make an entry in the .rela.plt section. */
5196 if (!doneone)
5197 {
25f23106
AM
5198 if (!htab->elf.dynamic_sections_created
5199 || h->dynindx == -1)
e054468f
AM
5200 htab->reliplt->size += sizeof (Elf32_External_Rela);
5201 else
9d8504b1 5202 {
e054468f
AM
5203 htab->relplt->size += sizeof (Elf32_External_Rela);
5204
5205 if (htab->plt_type == PLT_VXWORKS)
9d8504b1 5206 {
e054468f
AM
5207 /* Allocate space for the unloaded relocations. */
5208 if (!info->shared
5209 && htab->elf.dynamic_sections_created)
9d8504b1 5210 {
e054468f
AM
5211 if (ent->plt.offset
5212 == (bfd_vma) htab->plt_initial_entry_size)
5213 {
5214 htab->srelplt2->size
5215 += (sizeof (Elf32_External_Rela)
5216 * VXWORKS_PLTRESOLVE_RELOCS);
5217 }
5218
9d8504b1 5219 htab->srelplt2->size
e054468f
AM
5220 += (sizeof (Elf32_External_Rela)
5221 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
9d8504b1
PB
5222 }
5223
e054468f
AM
5224 /* Every PLT entry has an associated GOT entry in
5225 .got.plt. */
5226 htab->sgotplt->size += 4;
9d8504b1 5227 }
9d8504b1 5228 }
a6aa5195
AM
5229 doneone = TRUE;
5230 }
5231 }
5232 else
5233 ent->plt.offset = (bfd_vma) -1;
a6aa5195 5234 }
2ce859a1
AM
5235 else
5236 ent->plt.offset = (bfd_vma) -1;
5237
5238 if (!doneone)
5239 {
5240 h->plt.plist = NULL;
5241 h->needs_plt = 0;
5242 }
25dbc73a
AM
5243 }
5244 else
5245 {
a6aa5195 5246 h->plt.plist = NULL;
25dbc73a
AM
5247 h->needs_plt = 0;
5248 }
5249
5250 eh = (struct ppc_elf_link_hash_entry *) h;
5251 if (eh->elf.got.refcount > 0)
5252 {
d6e14abc
AM
5253 bfd_boolean dyn;
5254 unsigned int need;
5255
25dbc73a
AM
5256 /* Make sure this symbol is output as a dynamic symbol. */
5257 if (eh->elf.dynindx == -1
b099ab9f 5258 && !eh->elf.forced_local
25f23106 5259 && eh->elf.type != STT_GNU_IFUNC
b099ab9f 5260 && htab->elf.dynamic_sections_created)
25dbc73a
AM
5261 {
5262 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 5263 return FALSE;
25dbc73a 5264 }
252b5132 5265
d6e14abc
AM
5266 need = 0;
5267 if ((eh->tls_mask & TLS_TLS) != 0)
25dbc73a 5268 {
d6e14abc 5269 if ((eh->tls_mask & TLS_LD) != 0)
252b5132 5270 {
d6e14abc
AM
5271 if (!eh->elf.def_dynamic)
5272 /* We'll just use htab->tlsld_got.offset. This should
5273 always be the case. It's a little odd if we have
5274 a local dynamic reloc against a non-local symbol. */
5275 htab->tlsld_got.refcount += 1;
5276 else
3b36f7e6 5277 need += 8;
252b5132 5278 }
d6e14abc
AM
5279 if ((eh->tls_mask & TLS_GD) != 0)
5280 need += 8;
5281 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5282 need += 4;
5283 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 5284 need += 4;
d6e14abc
AM
5285 }
5286 else
5287 need += 4;
5288 if (need == 0)
5289 eh->elf.got.offset = (bfd_vma) -1;
5290 else
5291 {
25f23106 5292 asection *rsec = NULL;
3b36f7e6 5293 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM
5294 dyn = htab->elf.dynamic_sections_created;
5295 if ((info->shared
5296 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5297 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5298 || eh->elf.root.type != bfd_link_hash_undefweak))
25f23106
AM
5299 rsec = htab->relgot;
5300 else if (h->type == STT_GNU_IFUNC)
5301 rsec = htab->reliplt;
5302 if (rsec != NULL)
252b5132 5303 {
3b36f7e6
AM
5304 /* All the entries we allocated need relocs.
5305 Except LD only needs one. */
d6e14abc
AM
5306 if ((eh->tls_mask & TLS_LD) != 0
5307 && eh->elf.def_dynamic)
3b36f7e6 5308 need -= 4;
25f23106 5309 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 5310 }
25dbc73a
AM
5311 }
5312 }
5313 else
5314 eh->elf.got.offset = (bfd_vma) -1;
252b5132 5315
b099ab9f 5316 if (eh->dyn_relocs == NULL
de972ffa 5317 || !htab->elf.dynamic_sections_created)
25dbc73a 5318 return TRUE;
252b5132 5319
25dbc73a
AM
5320 /* In the shared -Bsymbolic case, discard space allocated for
5321 dynamic pc-relative relocs against symbols which turn out to be
5322 defined in regular objects. For the normal shared case, discard
5323 space for relocs that have become local due to symbol visibility
5324 changes. */
5325
5326 if (info->shared)
5327 {
5328 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 5329 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
5330 generated via assembly. We want calls to protected symbols to
5331 resolve directly to the function rather than going via the plt.
5332 If people want function pointer comparisons to work as expected
5333 then they should avoid writing weird assembly. */
5334 if (SYMBOL_CALLS_LOCAL (info, h))
5335 {
5336 struct ppc_elf_dyn_relocs **pp;
5337
5338 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 5339 {
25dbc73a
AM
5340 p->count -= p->pc_count;
5341 p->pc_count = 0;
5342 if (p->count == 0)
5343 *pp = p->next;
5344 else
5345 pp = &p->next;
252b5132 5346 }
25dbc73a 5347 }
252b5132 5348
3348747a
NS
5349 if (htab->is_vxworks)
5350 {
5351 struct ppc_elf_dyn_relocs **pp;
5352
5353 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5354 {
5355 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5356 *pp = p->next;
5357 else
5358 pp = &p->next;
5359 }
5360 }
5361
89200bf8
AM
5362 /* Discard relocs on undefined symbols that must be local. */
5363 if (eh->dyn_relocs != NULL
5364 && h->root.type == bfd_link_hash_undefined
5365 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5366 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5367 eh->dyn_relocs = NULL;
5368
25dbc73a
AM
5369 /* Also discard relocs on undefined weak syms with non-default
5370 visibility. */
cab87ef9
AM
5371 if (eh->dyn_relocs != NULL
5372 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 5373 {
dfbb6ac9
AM
5374 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5375 eh->dyn_relocs = NULL;
5376
5377 /* Make sure undefined weak symbols are output as a dynamic
5378 symbol in PIEs. */
5379 else if (h->dynindx == -1
e054468f
AM
5380 && !h->forced_local
5381 && !h->def_regular)
dfbb6ac9
AM
5382 {
5383 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5384 return FALSE;
5385 }
25dbc73a
AM
5386 }
5387 }
5388 else if (ELIMINATE_COPY_RELOCS)
5389 {
5390 /* For the non-shared case, discard space for relocs against
5391 symbols which turn out to need copy relocs or are not
5392 dynamic. */
7619e7c7 5393
25dbc73a 5394 if (!h->non_got_ref
25dbc73a
AM
5395 && !h->def_regular)
5396 {
5397 /* Make sure this symbol is output as a dynamic symbol.
5398 Undefined weak syms won't yet be marked as dynamic. */
5399 if (h->dynindx == -1
25f23106 5400 && !h->forced_local)
25dbc73a
AM
5401 {
5402 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5403 return FALSE;
5404 }
7619e7c7 5405
25dbc73a
AM
5406 /* If that succeeded, we know we'll be keeping all the
5407 relocs. */
5408 if (h->dynindx != -1)
5409 goto keep;
5410 }
252b5132 5411
25dbc73a 5412 eh->dyn_relocs = NULL;
252b5132 5413
25dbc73a
AM
5414 keep: ;
5415 }
252b5132 5416
25dbc73a
AM
5417 /* Finally, allocate space. */
5418 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5419 {
5420 asection *sreloc = elf_section_data (p->sec)->sreloc;
25f23106
AM
5421 if (!htab->elf.dynamic_sections_created)
5422 sreloc = htab->reliplt;
25dbc73a
AM
5423 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5424 }
252b5132 5425
25dbc73a
AM
5426 return TRUE;
5427}
7619e7c7 5428
625af618
AM
5429/* Set DF_TEXTREL if we find any dynamic relocs that apply to
5430 read-only sections. */
7619e7c7 5431
25dbc73a 5432static bfd_boolean
625af618 5433maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 5434{
25dbc73a
AM
5435 if (h->root.type == bfd_link_hash_indirect)
5436 return TRUE;
252b5132 5437
25dbc73a
AM
5438 if (h->root.type == bfd_link_hash_warning)
5439 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5440
625af618 5441 if (readonly_dynrelocs (h))
25dbc73a 5442 {
625af618 5443 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 5444
625af618
AM
5445 /* Not an error, just cut short the traversal. */
5446 return FALSE;
25dbc73a
AM
5447 }
5448 return TRUE;
5449}
5450
5451/* Set the sizes of the dynamic sections. */
5452
5453static bfd_boolean
5454ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5455 struct bfd_link_info *info)
5456{
5457 struct ppc_elf_link_hash_table *htab;
5458 asection *s;
5459 bfd_boolean relocs;
5460 bfd *ibfd;
7fce784e 5461
252b5132 5462#ifdef DEBUG
25dbc73a 5463 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 5464#endif
252b5132 5465
25dbc73a
AM
5466 htab = ppc_elf_hash_table (info);
5467 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 5468
25dbc73a
AM
5469 if (elf_hash_table (info)->dynamic_sections_created)
5470 {
5471 /* Set the contents of the .interp section to the interpreter. */
5472 if (info->executable)
5473 {
5474 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5475 BFD_ASSERT (s != NULL);
5476 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5477 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5478 }
5479 }
252b5132 5480
4a3dc543 5481 if (htab->plt_type == PLT_OLD)
d7128ce4 5482 htab->got_header_size = 16;
4a3dc543 5483 else if (htab->plt_type == PLT_NEW)
d7128ce4 5484 htab->got_header_size = 12;
252b5132 5485
25dbc73a
AM
5486 /* Set up .got offsets for local syms, and space for local dynamic
5487 relocs. */
5488 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5489 {
5490 bfd_signed_vma *local_got;
5491 bfd_signed_vma *end_local_got;
e054468f
AM
5492 struct plt_entry **local_plt;
5493 struct plt_entry **end_local_plt;
25dbc73a
AM
5494 char *lgot_masks;
5495 bfd_size_type locsymcount;
5496 Elf_Internal_Shdr *symtab_hdr;
7fce784e 5497
0c8d6e5c 5498 if (!is_ppc_elf (ibfd))
25dbc73a 5499 continue;
7fce784e 5500
25dbc73a
AM
5501 for (s = ibfd->sections; s != NULL; s = s->next)
5502 {
5503 struct ppc_elf_dyn_relocs *p;
252b5132 5504
25dbc73a
AM
5505 for (p = ((struct ppc_elf_dyn_relocs *)
5506 elf_section_data (s)->local_dynrel);
5507 p != NULL;
5508 p = p->next)
5509 {
5510 if (!bfd_is_abs_section (p->sec)
5511 && bfd_is_abs_section (p->sec->output_section))
5512 {
5513 /* Input section has been discarded, either because
5514 it is a copy of a linkonce section or due to
5515 linker script /DISCARD/, so we'll be discarding
5516 the relocs too. */
7fce784e 5517 }
3348747a
NS
5518 else if (htab->is_vxworks
5519 && strcmp (p->sec->output_section->name,
5520 ".tls_vars") == 0)
5521 {
5522 /* Relocations in vxworks .tls_vars sections are
5523 handled specially by the loader. */
5524 }
25dbc73a 5525 else if (p->count != 0)
7fce784e 5526 {
25f23106
AM
5527 asection *sreloc = elf_section_data (p->sec)->sreloc;
5528 if (!htab->elf.dynamic_sections_created)
5529 sreloc = htab->reliplt;
5530 sreloc->size += p->count * sizeof (Elf32_External_Rela);
25dbc73a
AM
5531 if ((p->sec->output_section->flags
5532 & (SEC_READONLY | SEC_ALLOC))
5533 == (SEC_READONLY | SEC_ALLOC))
5534 info->flags |= DF_TEXTREL;
7fce784e 5535 }
252b5132 5536 }
252b5132 5537 }
252b5132 5538
25dbc73a
AM
5539 local_got = elf_local_got_refcounts (ibfd);
5540 if (!local_got)
5541 continue;
252b5132 5542
0ffa91dd 5543 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
5544 locsymcount = symtab_hdr->sh_info;
5545 end_local_got = local_got + locsymcount;
e054468f
AM
5546 local_plt = (struct plt_entry **) end_local_got;
5547 end_local_plt = local_plt + locsymcount;
5548 lgot_masks = (char *) end_local_plt;
25dbc73a
AM
5549 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5550 if (*local_got > 0)
5551 {
d6e14abc
AM
5552 unsigned int need = 0;
5553 if ((*lgot_masks & TLS_TLS) != 0)
25dbc73a 5554 {
d6e14abc
AM
5555 if ((*lgot_masks & TLS_GD) != 0)
5556 need += 8;
5557 if ((*lgot_masks & TLS_LD) != 0)
5558 htab->tlsld_got.refcount += 1;
5559 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5560 need += 4;
5561 if ((*lgot_masks & TLS_DTPREL) != 0)
5562 need += 4;
25dbc73a 5563 }
d6e14abc
AM
5564 else
5565 need += 4;
5566 if (need == 0)
5567 *local_got = (bfd_vma) -1;
25dbc73a
AM
5568 else
5569 {
3b36f7e6 5570 *local_got = allocate_got (htab, need);
25dbc73a 5571 if (info->shared)
3b36f7e6
AM
5572 htab->relgot->size += (need
5573 * (sizeof (Elf32_External_Rela) / 4));
25f23106
AM
5574 else if ((*lgot_masks & PLT_IFUNC) != 0)
5575 htab->reliplt->size += (need
5576 * (sizeof (Elf32_External_Rela) / 4));
25dbc73a
AM
5577 }
5578 }
5579 else
5580 *local_got = (bfd_vma) -1;
e054468f
AM
5581
5582 if (htab->is_vxworks)
5583 continue;
5584
5585 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5586 for (; local_plt < end_local_plt; ++local_plt)
5587 {
5588 struct plt_entry *ent;
5589 bfd_boolean doneone = FALSE;
5590 bfd_vma plt_offset = 0, glink_offset = 0;
5591
5592 for (ent = *local_plt; ent != NULL; ent = ent->next)
5593 if (ent->plt.refcount > 0)
5594 {
5595 asection *s = htab->iplt;
5596
5597 if (!doneone)
5598 {
5599 plt_offset = s->size;
5600 s->size += 4;
5601 }
5602 ent->plt.offset = plt_offset;
5603
5604 s = htab->glink;
a877a2b6 5605 if (!doneone || info->shared)
e054468f
AM
5606 {
5607 glink_offset = s->size;
5608 s->size += GLINK_ENTRY_SIZE;
5609 }
5610 ent->glink_offset = glink_offset;
5611
5612 if (!doneone)
5613 {
25f23106 5614 htab->reliplt->size += sizeof (Elf32_External_Rela);
e054468f
AM
5615 doneone = TRUE;
5616 }
5617 }
5618 else
5619 ent->plt.offset = (bfd_vma) -1;
5620 }
25dbc73a 5621 }
252b5132 5622
b7fcf6f6
AM
5623 /* Allocate space for global sym dynamic relocs. */
5624 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5625
3b36f7e6
AM
5626 if (htab->tlsld_got.refcount > 0)
5627 {
5628 htab->tlsld_got.offset = allocate_got (htab, 8);
5629 if (info->shared)
5630 htab->relgot->size += sizeof (Elf32_External_Rela);
5631 }
5632 else
5633 htab->tlsld_got.offset = (bfd_vma) -1;
5634
4a3dc543 5635 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
5636 {
5637 unsigned int g_o_t = 32768;
5638
4d962050
AM
5639 /* If we haven't allocated the header, do so now. When we get here,
5640 for old plt/got the got size will be 0 to 32764 (not allocated),
5641 or 32780 to 65536 (header allocated). For new plt/got, the
5642 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM
5643 if (htab->got->size <= 32768)
5644 {
5645 g_o_t = htab->got->size;
4a3dc543 5646 if (htab->plt_type == PLT_OLD)
4d962050 5647 g_o_t += 4;
3b36f7e6
AM
5648 htab->got->size += htab->got_header_size;
5649 }
3b36f7e6
AM
5650
5651 htab->elf.hgot->root.u.def.value = g_o_t;
5652 }
5653
e054468f
AM
5654 if (htab->glink != NULL
5655 && htab->glink->size != 0
5656 && htab->elf.dynamic_sections_created)
d7128ce4
AM
5657 {
5658 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM
5659 /* Space for the branch table. */
5660 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5661 /* Pad out to align the start of PLTresolve. */
5662 htab->glink->size += -htab->glink->size & 15;
d7128ce4 5663 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910
AM
5664
5665 if (htab->emit_stub_syms)
5666 {
5667 struct elf_link_hash_entry *sh;
5668 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5669 TRUE, FALSE, FALSE);
5670 if (sh == NULL)
5671 return FALSE;
5672 if (sh->root.type == bfd_link_hash_new)
5673 {
5674 sh->root.type = bfd_link_hash_defined;
5675 sh->root.u.def.section = htab->glink;
5676 sh->root.u.def.value = htab->glink_pltresolve;
5677 sh->ref_regular = 1;
5678 sh->def_regular = 1;
5679 sh->ref_regular_nonweak = 1;
5680 sh->forced_local = 1;
5681 sh->non_elf = 0;
5682 }
5683 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5684 TRUE, FALSE, FALSE);
5685 if (sh == NULL)
5686 return FALSE;
5687 if (sh->root.type == bfd_link_hash_new)
5688 {
5689 sh->root.type = bfd_link_hash_defined;
5690 sh->root.u.def.section = htab->glink;
5691 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5692 sh->ref_regular = 1;
5693 sh->def_regular = 1;
5694 sh->ref_regular_nonweak = 1;
5695 sh->forced_local = 1;
5696 sh->non_elf = 0;
5697 }
5698 }
d7128ce4
AM
5699 }
5700
25dbc73a
AM
5701 /* We've now determined the sizes of the various dynamic sections.
5702 Allocate memory for them. */
5703 relocs = FALSE;
5704 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 5705 {
9d8504b1
PB
5706 bfd_boolean strip_section = TRUE;
5707
25dbc73a
AM
5708 if ((s->flags & SEC_LINKER_CREATED) == 0)
5709 continue;
252b5132 5710
25dbc73a 5711 if (s == htab->plt
e054468f 5712 || s == htab->got)
25dbc73a 5713 {
9d8504b1
PB
5714 /* We'd like to strip these sections if they aren't needed, but if
5715 we've exported dynamic symbols from them we must leave them.
5716 It's too late to tell BFD to get rid of the symbols. */
e054468f 5717 if (htab->elf.hplt != NULL)
9d8504b1 5718 strip_section = FALSE;
25dbc73a
AM
5719 /* Strip this section if we don't need it; see the
5720 comment below. */
5721 }
e054468f
AM
5722 else if (s == htab->iplt
5723 || s == htab->glink
5724 || s == htab->sgotplt
5725 || s == htab->sbss
5726 || s == htab->dynbss
5727 || s == htab->dynsbss
5728 || s == htab->sdata[0].section
c9a2f333 5729 || s == htab->sdata[1].section)
25dbc73a 5730 {
c9a2f333 5731 /* Strip these too. */
25dbc73a 5732 }
0112cd26 5733 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
25dbc73a 5734 {
c456f082 5735 if (s->size != 0)
25dbc73a
AM
5736 {
5737 /* Remember whether there are any relocation sections. */
5738 relocs = TRUE;
252b5132 5739
25dbc73a
AM
5740 /* We use the reloc_count field as a counter if we need
5741 to copy relocs into the output file. */
5742 s->reloc_count = 0;
252b5132
RH
5743 }
5744 }
25dbc73a
AM
5745 else
5746 {
5747 /* It's not one of our sections, so don't allocate space. */
5748 continue;
5749 }
252b5132 5750
9d8504b1 5751 if (s->size == 0 && strip_section)
25dbc73a 5752 {
c456f082
AM
5753 /* If we don't need this section, strip it from the
5754 output file. This is mostly to handle .rela.bss and
5755 .rela.plt. We must create both sections in
5756 create_dynamic_sections, because they must be created
5757 before the linker maps input sections to output
5758 sections. The linker does that before
5759 adjust_dynamic_symbol is called, and it is that
5760 function which decides whether anything needs to go
5761 into these sections. */
8423293d 5762 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
5763 continue;
5764 }
7fce784e 5765
d7128ce4 5766 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
5767 continue;
5768
25dbc73a
AM
5769 /* Allocate memory for the section contents. */
5770 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5771 if (s->contents == NULL)
5772 return FALSE;
5773 }
252b5132 5774
25dbc73a 5775 if (htab->elf.dynamic_sections_created)
7619e7c7 5776 {
25dbc73a
AM
5777 /* Add some entries to the .dynamic section. We fill in the
5778 values later, in ppc_elf_finish_dynamic_sections, but we
5779 must add the entries now so that we get the correct size for
5780 the .dynamic section. The DT_DEBUG entry is filled in by the
5781 dynamic linker and used by the debugger. */
5782#define add_dynamic_entry(TAG, VAL) \
5783 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 5784
25dbc73a 5785 if (info->executable)
7619e7c7 5786 {
25dbc73a
AM
5787 if (!add_dynamic_entry (DT_DEBUG, 0))
5788 return FALSE;
7619e7c7
AM
5789 }
5790
25dbc73a 5791 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 5792 {
25dbc73a
AM
5793 if (!add_dynamic_entry (DT_PLTGOT, 0)
5794 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5795 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5796 || !add_dynamic_entry (DT_JMPREL, 0))
5797 return FALSE;
5798 }
7619e7c7 5799
d7128ce4
AM
5800 if (htab->glink != NULL && htab->glink->size != 0)
5801 {
1fe44d79 5802 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4
AM
5803 return FALSE;
5804 }
5805
25dbc73a
AM
5806 if (relocs)
5807 {
5808 if (!add_dynamic_entry (DT_RELA, 0)
5809 || !add_dynamic_entry (DT_RELASZ, 0)
5810 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5811 return FALSE;
5812 }
7619e7c7 5813
25dbc73a
AM
5814 /* If any dynamic relocs apply to a read-only section, then we
5815 need a DT_TEXTREL entry. */
5816 if ((info->flags & DF_TEXTREL) == 0)
625af618 5817 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 5818 info);
7619e7c7 5819
25dbc73a
AM
5820 if ((info->flags & DF_TEXTREL) != 0)
5821 {
5822 if (!add_dynamic_entry (DT_TEXTREL, 0))
5823 return FALSE;
7619e7c7 5824 }
7a2b07ff
NS
5825 if (htab->is_vxworks
5826 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5827 return FALSE;
5828 }
25dbc73a
AM
5829#undef add_dynamic_entry
5830
7619e7c7
AM
5831 return TRUE;
5832}
0eb4a168
AM
5833
5834/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5835
5836static bfd_boolean
5837ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5838{
5839 if (h->plt.plist != NULL
5840 && !h->def_regular
5841 && (!h->pointer_equality_needed
5842 || !h->ref_regular_nonweak))
5843 return FALSE;
5844
5845 return _bfd_elf_hash_symbol (h);
5846}
25dbc73a
AM
5847\f
5848#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5849
5850static const int shared_stub_entry[] =
5851 {
5852 0x7c0802a6, /* mflr 0 */
5853 0x429f0005, /* bcl 20, 31, .Lxxx */
5854 0x7d6802a6, /* mflr 11 */
5855 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5856 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5857 0x7c0803a6, /* mtlr 0 */
5858 0x7d6903a6, /* mtctr 11 */
5859 0x4e800420, /* bctr */
5860 };
5861
5862static const int stub_entry[] =
5863 {
5864 0x3d600000, /* lis 11,xxx@ha */
5865 0x396b0000, /* addi 11,11,xxx@l */
5866 0x7d6903a6, /* mtctr 11 */
5867 0x4e800420, /* bctr */
5868 };
5869
5870static bfd_boolean
5871ppc_elf_relax_section (bfd *abfd,
5872 asection *isec,
5873 struct bfd_link_info *link_info,
5874 bfd_boolean *again)
5875{
5876 struct one_fixup
5877 {
5878 struct one_fixup *next;
5879 asection *tsec;
5880 bfd_vma toff;
5881 bfd_vma trampoff;
5882 };
7619e7c7 5883
25dbc73a
AM
5884 Elf_Internal_Shdr *symtab_hdr;
5885 bfd_byte *contents = NULL;
5886 Elf_Internal_Sym *isymbuf = NULL;
5887 Elf_Internal_Rela *internal_relocs = NULL;
5888 Elf_Internal_Rela *irel, *irelend;
5889 struct one_fixup *fixups = NULL;
9bc4e62b 5890 unsigned changes = 0;
d7128ce4 5891 struct ppc_elf_link_hash_table *htab;
25dbc73a 5892 bfd_size_type trampoff;
a6aa5195 5893 asection *got2;
7619e7c7 5894
25dbc73a 5895 *again = FALSE;
7619e7c7 5896
c87b5a93
AM
5897 /* Nothing to do if there are no relocations, and no need to do
5898 anything with non-alloc sections. */
5899 if ((isec->flags & SEC_ALLOC) == 0
5900 || (isec->flags & SEC_RELOC) == 0
5901 || isec->reloc_count == 0)
25dbc73a 5902 return TRUE;
7619e7c7 5903
c8a1f254
NS
5904 /* We cannot represent the required PIC relocs in the output, so don't
5905 do anything. The linker doesn't support mixing -shared and -r
5906 anyway. */
5907 if (link_info->relocatable && link_info->shared)
5908 return TRUE;
5909
25dbc73a
AM
5910 trampoff = (isec->size + 3) & (bfd_vma) -4;
5911 /* Space for a branch around any trampolines. */
5912 trampoff += 4;
7619e7c7 5913
0ffa91dd 5914 symtab_hdr = &elf_symtab_hdr (abfd);
7619e7c7 5915
25dbc73a
AM
5916 /* Get a copy of the native relocations. */
5917 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5918 link_info->keep_memory);
5919 if (internal_relocs == NULL)
5920 goto error_return;
7619e7c7 5921
d7128ce4 5922 htab = ppc_elf_hash_table (link_info);
a6aa5195 5923 got2 = bfd_get_section_by_name (abfd, ".got2");
7619e7c7 5924
a6aa5195 5925 irelend = internal_relocs + isec->reloc_count;
25dbc73a 5926 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 5927 {
25dbc73a
AM
5928 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5929 bfd_vma symaddr, reladdr, toff, roff;
5930 asection *tsec;
5931 struct one_fixup *f;
5932 size_t insn_offset = 0;
5933 bfd_vma max_branch_offset, val;
5934 bfd_byte *hit_addr;
5935 unsigned long t0;
de972ffa 5936 struct elf_link_hash_entry *h;
25dbc73a 5937 unsigned char sym_type;
7619e7c7 5938
25dbc73a
AM
5939 switch (r_type)
5940 {
5941 case R_PPC_REL24:
5942 case R_PPC_LOCAL24PC:
5943 case R_PPC_PLTREL24:
5944 max_branch_offset = 1 << 25;
5945 break;
7619e7c7 5946
25dbc73a
AM
5947 case R_PPC_REL14:
5948 case R_PPC_REL14_BRTAKEN:
5949 case R_PPC_REL14_BRNTAKEN:
5950 max_branch_offset = 1 << 15;
5951 break;
7619e7c7 5952
25dbc73a
AM
5953 default:
5954 continue;
5955 }
7619e7c7 5956
25dbc73a 5957 /* Get the value of the symbol referred to by the reloc. */
de972ffa 5958 h = NULL;
25dbc73a
AM
5959 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5960 {
5961 /* A local symbol. */
5962 Elf_Internal_Sym *isym;
7fce784e 5963
25dbc73a
AM
5964 /* Read this BFD's local symbols. */
5965 if (isymbuf == NULL)
5966 {
5967 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5968 if (isymbuf == NULL)
5969 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5970 symtab_hdr->sh_info, 0,
5971 NULL, NULL, NULL);
5972 if (isymbuf == 0)
5973 goto error_return;
5974 }
5975 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5976 if (isym->st_shndx == SHN_UNDEF)
c8a1f254 5977 tsec = bfd_und_section_ptr;
25dbc73a
AM
5978 else if (isym->st_shndx == SHN_ABS)
5979 tsec = bfd_abs_section_ptr;
5980 else if (isym->st_shndx == SHN_COMMON)
5981 tsec = bfd_com_section_ptr;
5982 else
5983 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 5984
25dbc73a
AM
5985 toff = isym->st_value;
5986 sym_type = ELF_ST_TYPE (isym->st_info);
5987 }
5988 else
5989 {
5990 /* Global symbol handling. */
5991 unsigned long indx;
7619e7c7 5992
25dbc73a
AM
5993 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5994 h = elf_sym_hashes (abfd)[indx];
7619e7c7 5995
25dbc73a
AM
5996 while (h->root.type == bfd_link_hash_indirect
5997 || h->root.type == bfd_link_hash_warning)
5998 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5999
a6aa5195
AM
6000 tsec = NULL;
6001 toff = 0;
a6aa5195
AM
6002 if (tsec != NULL)
6003 ;
25dbc73a
AM
6004 else if (h->root.type == bfd_link_hash_defined
6005 || h->root.type == bfd_link_hash_defweak)
6006 {
6007 tsec = h->root.u.def.section;
6008 toff = h->root.u.def.value;
6009 }
c8a1f254
NS
6010 else if (h->root.type == bfd_link_hash_undefined
6011 || h->root.type == bfd_link_hash_undefweak)
6012 {
6013 tsec = bfd_und_section_ptr;
6014 toff = 0;
6015 }
25dbc73a
AM
6016 else
6017 continue;
7619e7c7 6018
25dbc73a
AM
6019 sym_type = h->type;
6020 }
7619e7c7 6021
de972ffa
AM
6022 if (is_branch_reloc (r_type))
6023 {
6024 struct plt_entry **plist = NULL;
6025
6026 if (h != NULL)
6027 plist = &h->plt.plist;
6028 else if (sym_type == STT_GNU_IFUNC)
6029 {
6030 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6031 struct plt_entry **local_plt = (struct plt_entry **)
6032 (local_got_offsets + symtab_hdr->sh_info);
6033 plist = local_plt + ELF32_R_SYM (irel->r_info);
6034 }
6035 if (plist != NULL)
6036 {
6037 bfd_vma addend = 0;
6038 struct plt_entry *ent;
6039
a877a2b6 6040 if (r_type == R_PPC_PLTREL24 && link_info->shared)
de972ffa
AM
6041 addend = irel->r_addend;
6042 ent = find_plt_ent (plist, got2, addend);
6043 if (ent != NULL)
6044 {
6045 if (htab->plt_type == PLT_NEW
6046 || h == NULL
6047 || !htab->elf.dynamic_sections_created
6048 || h->dynindx == -1)
6049 {
6050 tsec = htab->glink;
6051 toff = ent->glink_offset;
6052 }
6053 else
6054 {
6055 tsec = htab->plt;
6056 toff = ent->plt.offset;
6057 }
6058 }
6059 }
6060 }
6061
25dbc73a
AM
6062 /* If the branch and target are in the same section, you have
6063 no hope of adding stubs. We'll error out later should the
6064 branch overflow. */
6065 if (tsec == isec)
6066 continue;
6067
6068 /* There probably isn't any reason to handle symbols in
6069 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6070 attribute for a code section, and we are only looking at
6071 branches. However, implement it correctly here as a
6072 reference for other target relax_section functions. */
6073 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6074 {
6075 /* At this stage in linking, no SEC_MERGE symbol has been
6076 adjusted, so all references to such symbols need to be
6077 passed through _bfd_merged_section_offset. (Later, in
6078 relocate_section, all SEC_MERGE symbols *except* for
6079 section symbols have been adjusted.)
6080
6081 gas may reduce relocations against symbols in SEC_MERGE
6082 sections to a relocation against the section symbol when
6083 the original addend was zero. When the reloc is against
6084 a section symbol we should include the addend in the
6085 offset passed to _bfd_merged_section_offset, since the
6086 location of interest is the original symbol. On the
6087 other hand, an access to "sym+addend" where "sym" is not
6088 a section symbol should not include the addend; Such an
6089 access is presumed to be an offset from "sym"; The
6090 location of interest is just "sym". */
6091 if (sym_type == STT_SECTION)
6092 toff += irel->r_addend;
7619e7c7 6093
25dbc73a
AM
6094 toff = _bfd_merged_section_offset (abfd, &tsec,
6095 elf_section_data (tsec)->sec_info,
6096 toff);
7619e7c7 6097
25dbc73a
AM
6098 if (sym_type != STT_SECTION)
6099 toff += irel->r_addend;
6100 }
a6aa5195
AM
6101 /* PLTREL24 addends are special. */
6102 else if (r_type != R_PPC_PLTREL24)
25dbc73a 6103 toff += irel->r_addend;
7619e7c7 6104
7de713b9
AM
6105 /* Attempted -shared link of non-pic code loses. */
6106 if (tsec->output_section == NULL)
6107 continue;
6108
25dbc73a 6109 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7619e7c7 6110
25dbc73a
AM
6111 roff = irel->r_offset;
6112 reladdr = isec->output_section->vma + isec->output_offset + roff;
7619e7c7 6113
25dbc73a 6114 /* If the branch is in range, no need to do anything. */
c8a1f254
NS
6115 if (tsec != bfd_und_section_ptr
6116 && (!link_info->relocatable
6117 /* A relocatable link may have sections moved during
6118 final link, so do not presume they remain in range. */
6119 || tsec->output_section == isec->output_section)
6120 && symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
25dbc73a 6121 continue;
252b5132 6122
25dbc73a
AM
6123 /* Look for an existing fixup to this address. */
6124 for (f = fixups; f ; f = f->next)
6125 if (f->tsec == tsec && f->toff == toff)
6126 break;
6127
6128 if (f == NULL)
7619e7c7 6129 {
25dbc73a
AM
6130 size_t size;
6131 unsigned long stub_rtype;
252b5132 6132
25dbc73a
AM
6133 val = trampoff - roff;
6134 if (val >= max_branch_offset)
6135 /* Oh dear, we can't reach a trampoline. Don't try to add
6136 one. We'll report an error later. */
6137 continue;
252b5132 6138
25dbc73a
AM
6139 if (link_info->shared)
6140 {
6141 size = 4 * ARRAY_SIZE (shared_stub_entry);
6142 insn_offset = 12;
6143 stub_rtype = R_PPC_RELAX32PC;
6144 }
6145 else
6146 {
6147 size = 4 * ARRAY_SIZE (stub_entry);
6148 insn_offset = 0;
6149 stub_rtype = R_PPC_RELAX32;
6150 }
dc810e39 6151
25dbc73a
AM
6152 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
6153 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
6154 abort ();
d7128ce4
AM
6155 if (tsec == htab->plt
6156 || tsec == htab->glink)
25dbc73a 6157 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
252b5132 6158
25dbc73a
AM
6159 /* Hijack the old relocation. Since we need two
6160 relocations for this use a "composite" reloc. */
6161 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6162 stub_rtype);
6163 irel->r_offset = trampoff + insn_offset;
e7d92e2e
AM
6164 if (r_type == R_PPC_PLTREL24)
6165 irel->r_addend = 0;
252b5132 6166
25dbc73a
AM
6167 /* Record the fixup so we don't do it again this section. */
6168 f = bfd_malloc (sizeof (*f));
6169 f->next = fixups;
6170 f->tsec = tsec;
6171 f->toff = toff;
6172 f->trampoff = trampoff;
6173 fixups = f;
252b5132 6174
25dbc73a 6175 trampoff += size;
9bc4e62b 6176 changes++;
25dbc73a
AM
6177 }
6178 else
6179 {
6180 val = f->trampoff - roff;
6181 if (val >= max_branch_offset)
6182 continue;
252b5132 6183
25dbc73a
AM
6184 /* Nop out the reloc, since we're finalizing things here. */
6185 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6186 }
252b5132 6187
25dbc73a
AM
6188 /* Get the section contents. */
6189 if (contents == NULL)
6190 {
6191 /* Get cached copy if it exists. */
6192 if (elf_section_data (isec)->this_hdr.contents != NULL)
6193 contents = elf_section_data (isec)->this_hdr.contents;
6194 else
6195 {
6196 /* Go get them off disk. */
6197 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6198 goto error_return;
6199 }
6200 }
252b5132 6201
25dbc73a
AM
6202 /* Fix up the existing branch to hit the trampoline. */
6203 hit_addr = contents + roff;
6204 switch (r_type)
6205 {
6206 case R_PPC_REL24:
6207 case R_PPC_LOCAL24PC:
6208 case R_PPC_PLTREL24:
6209 t0 = bfd_get_32 (abfd, hit_addr);
6210 t0 &= ~0x3fffffc;
6211 t0 |= val & 0x3fffffc;
6212 bfd_put_32 (abfd, t0, hit_addr);
6213 break;
252b5132 6214
25dbc73a
AM
6215 case R_PPC_REL14:
6216 case R_PPC_REL14_BRTAKEN:
6217 case R_PPC_REL14_BRNTAKEN:
6218 t0 = bfd_get_32 (abfd, hit_addr);
6219 t0 &= ~0xfffc;
6220 t0 |= val & 0xfffc;
6221 bfd_put_32 (abfd, t0, hit_addr);
6222 break;
6223 }
6224 }
252b5132 6225
25dbc73a 6226 /* Write out the trampolines. */
25dbc73a
AM
6227 if (fixups != NULL)
6228 {
6229 const int *stub;
6230 bfd_byte *dest;
6231 bfd_vma val;
6232 int i, size;
252b5132 6233
25dbc73a
AM
6234 do
6235 {
6236 struct one_fixup *f = fixups;
6237 fixups = fixups->next;
6238 free (f);
6239 }
6240 while (fixups);
252b5132 6241
515ef31d 6242 contents = bfd_realloc_or_free (contents, trampoff);
25dbc73a
AM
6243 if (contents == NULL)
6244 goto error_return;
252b5132 6245
25dbc73a
AM
6246 isec->size = (isec->size + 3) & (bfd_vma) -4;
6247 /* Branch around the trampolines. */
e7d92e2e 6248 val = B + trampoff - isec->size;
25dbc73a
AM
6249 dest = contents + isec->size;
6250 isec->size = trampoff;
6251 bfd_put_32 (abfd, val, dest);
6252 dest += 4;
252b5132 6253
25dbc73a
AM
6254 if (link_info->shared)
6255 {
6256 stub = shared_stub_entry;
6257 size = ARRAY_SIZE (shared_stub_entry);
6258 }
6259 else
6260 {
6261 stub = stub_entry;
6262 size = ARRAY_SIZE (stub_entry);
6263 }
252b5132 6264
25dbc73a
AM
6265 i = 0;
6266 while (dest < contents + trampoff)
252b5132 6267 {
25dbc73a
AM
6268 bfd_put_32 (abfd, stub[i], dest);
6269 i++;
6270 if (i == size)
6271 i = 0;
6272 dest += 4;
252b5132 6273 }
25dbc73a 6274 BFD_ASSERT (i == 0);
252b5132
RH
6275 }
6276
25dbc73a
AM
6277 if (isymbuf != NULL
6278 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 6279 {
25dbc73a
AM
6280 if (! link_info->keep_memory)
6281 free (isymbuf);
252b5132 6282 else
25dbc73a
AM
6283 {
6284 /* Cache the symbols for elf_link_input_bfd. */
6285 symtab_hdr->contents = (unsigned char *) isymbuf;
6286 }
252b5132
RH
6287 }
6288
25dbc73a
AM
6289 if (contents != NULL
6290 && elf_section_data (isec)->this_hdr.contents != contents)
6291 {
9bc4e62b 6292 if (!changes && !link_info->keep_memory)
25dbc73a
AM
6293 free (contents);
6294 else
6295 {
6296 /* Cache the section contents for elf_link_input_bfd. */
6297 elf_section_data (isec)->this_hdr.contents = contents;
6298 }
6299 }
252b5132 6300
9bc4e62b 6301 if (changes != 0)
25dbc73a 6302 {
9bc4e62b
NS
6303 /* Append sufficient NOP relocs so we can write out relocation
6304 information for the trampolines. */
6305 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6306 * sizeof (*new_relocs));
6307 unsigned ix;
6308
6309 if (!new_relocs)
6310 goto error_return;
6311 memcpy (new_relocs, internal_relocs,
6312 isec->reloc_count * sizeof (*new_relocs));
6313 for (ix = changes; ix--;)
6314 {
6315 irel = new_relocs + ix + isec->reloc_count;
6316
6317 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6318 }
6319 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 6320 free (internal_relocs);
9bc4e62b
NS
6321 elf_section_data (isec)->relocs = new_relocs;
6322 isec->reloc_count += changes;
6323 elf_section_data (isec)->rel_hdr.sh_size
6324 += changes * elf_section_data (isec)->rel_hdr.sh_entsize;
25dbc73a 6325 }
9bc4e62b
NS
6326 else if (elf_section_data (isec)->relocs != internal_relocs)
6327 free (internal_relocs);
252b5132 6328
9bc4e62b 6329 *again = changes != 0;
c8a1f254
NS
6330 if (!*again && link_info->relocatable)
6331 {
6332 /* Convert the internal relax relocs to external form. */
6333 for (irel = internal_relocs; irel < irelend; irel++)
6334 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX32)
6335 {
6336 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6337
6338 /* Rewrite the reloc and convert one of the trailing nop
6339 relocs to describe this relocation. */
6340 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6341 /* The relocs are at the bottom 2 bytes */
6342 irel[0].r_offset += 2;
6343 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6344 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6345 irel[1].r_offset += 4;
6346 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6347 irel++;
6348 }
6349 }
6350
b34976b6 6351 return TRUE;
25dbc73a
AM
6352
6353 error_return:
6354 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6355 free (isymbuf);
6356 if (contents != NULL
6357 && elf_section_data (isec)->this_hdr.contents != contents)
6358 free (contents);
6359 if (internal_relocs != NULL
6360 && elf_section_data (isec)->relocs != internal_relocs)
6361 free (internal_relocs);
6362 return FALSE;
252b5132 6363}
252b5132 6364\f
8a696751
AM
6365/* What to do when ld finds relocations against symbols defined in
6366 discarded sections. */
6367
6368static unsigned int
6369ppc_elf_action_discarded (asection *sec)
6370{
6371 if (strcmp (".fixup", sec->name) == 0)
6372 return 0;
6373
6374 if (strcmp (".got2", sec->name) == 0)
6375 return 0;
6376
6377 return _bfd_elf_default_action_discarded (sec);
6378}
c9a2f333 6379\f
25dbc73a 6380/* Fill in the address for a pointer generated in a linker section. */
252b5132 6381
25dbc73a 6382static bfd_vma
76750a2f 6383elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
6384 elf_linker_section_t *lsect,
6385 struct elf_link_hash_entry *h,
6386 bfd_vma relocation,
2bb04cf2 6387 const Elf_Internal_Rela *rel)
25dbc73a
AM
6388{
6389 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 6390
25dbc73a 6391 BFD_ASSERT (lsect != NULL);
252b5132 6392
25dbc73a 6393 if (h != NULL)
252b5132 6394 {
25dbc73a
AM
6395 /* Handle global symbol. */
6396 struct ppc_elf_link_hash_entry *eh;
252b5132 6397
25dbc73a 6398 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
6399 BFD_ASSERT (eh->elf.def_regular);
6400 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
6401 }
6402 else
6403 {
6404 /* Handle local symbol. */
6405 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 6406
0c8d6e5c 6407 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 6408 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
6409 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6410 }
252b5132 6411
76750a2f
AM
6412 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6413 rel->r_addend,
6414 lsect);
6415 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 6416
76750a2f
AM
6417 /* Offset will always be a multiple of four, so use the bottom bit
6418 as a "written" flag. */
6419 if ((linker_section_ptr->offset & 1) == 0)
6420 {
6421 bfd_put_32 (lsect->section->owner,
6422 relocation + linker_section_ptr->addend,
6423 lsect->section->contents + linker_section_ptr->offset);
6424 linker_section_ptr->offset += 1;
252b5132
RH
6425 }
6426
25dbc73a 6427 relocation = (lsect->section->output_offset
76750a2f 6428 + linker_section_ptr->offset - 1
c9a2f333 6429 - 0x8000);
252b5132 6430
25dbc73a
AM
6431#ifdef DEBUG
6432 fprintf (stderr,
6433 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6434 lsect->name, (long) relocation, (long) relocation);
6435#endif
252b5132 6436
25dbc73a
AM
6437 /* Subtract out the addend, because it will get added back in by the normal
6438 processing. */
6439 return relocation - linker_section_ptr->addend;
252b5132 6440}
25dbc73a 6441
e054468f
AM
6442#define PPC_LO(v) ((v) & 0xffff)
6443#define PPC_HI(v) (((v) >> 16) & 0xffff)
6444#define PPC_HA(v) PPC_HI ((v) + 0x8000)
6445
6446static void
6447write_glink_stub (struct plt_entry *ent, asection *plt_sec,
6448 struct bfd_link_info *info)
6449{
6450 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6451 bfd *output_bfd = info->output_bfd;
6452 bfd_vma plt;
6453 unsigned char *p;
6454
6455 plt = ((ent->plt.offset & ~1)
6456 + plt_sec->output_section->vma
6457 + plt_sec->output_offset);
6458 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6459
a877a2b6 6460 if (info->shared)
e054468f
AM
6461 {
6462 bfd_vma got = 0;
6463
6464 if (ent->addend >= 32768)
6465 got = (ent->addend
6466 + ent->sec->output_section->vma
6467 + ent->sec->output_offset);
6468 else if (htab->elf.hgot != NULL)
6469 got = SYM_VAL (htab->elf.hgot);
6470
6471 plt -= got;
6472
6473 if (plt + 0x8000 < 0x10000)
6474 {
6475 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6476 p += 4;
6477 bfd_put_32 (output_bfd, MTCTR_11, p);
6478 p += 4;
6479 bfd_put_32 (output_bfd, BCTR, p);
6480 p += 4;
6481 bfd_put_32 (output_bfd, NOP, p);
6482 p += 4;
6483 }
6484 else
6485 {
6486 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6487 p += 4;
6488 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6489 p += 4;
6490 bfd_put_32 (output_bfd, MTCTR_11, p);
6491 p += 4;
6492 bfd_put_32 (output_bfd, BCTR, p);
6493 p += 4;
6494 }
6495 }
6496 else
6497 {
6498 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6499 p += 4;
6500 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6501 p += 4;
6502 bfd_put_32 (output_bfd, MTCTR_11, p);
6503 p += 4;
6504 bfd_put_32 (output_bfd, BCTR, p);
6505 p += 4;
6506 }
6507}
6508
252b5132
RH
6509/* The RELOCATE_SECTION function is called by the ELF backend linker
6510 to handle the relocations for a section.
6511
6512 The relocs are always passed as Rela structures; if the section
6513 actually uses Rel structures, the r_addend field will always be
6514 zero.
6515
6516 This function is responsible for adjust the section contents as
6517 necessary, and (if using Rela relocs and generating a
1049f94e 6518 relocatable output file) adjusting the reloc addend as
252b5132
RH
6519 necessary.
6520
6521 This function does not have to worry about setting the reloc
6522 address or the reloc symbol index.
6523
6524 LOCAL_SYMS is a pointer to the swapped in local symbols.
6525
6526 LOCAL_SECTIONS is an array giving the section in the input file
6527 corresponding to the st_shndx field of each local symbol.
6528
6529 The global hash table entry for the global symbols can be found
6530 via elf_sym_hashes (input_bfd).
6531
1049f94e 6532 When generating relocatable output, this function must handle
252b5132
RH
6533 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6534 going to be the section symbol corresponding to the output
6535 section, which means that the addend must be adjusted
6536 accordingly. */
6537
b34976b6 6538static bfd_boolean
55fd94b0
AM
6539ppc_elf_relocate_section (bfd *output_bfd,
6540 struct bfd_link_info *info,
6541 bfd *input_bfd,
6542 asection *input_section,
6543 bfd_byte *contents,
6544 Elf_Internal_Rela *relocs,
6545 Elf_Internal_Sym *local_syms,
6546 asection **local_sections)
252b5132 6547{
7619e7c7
AM
6548 Elf_Internal_Shdr *symtab_hdr;
6549 struct elf_link_hash_entry **sym_hashes;
6550 struct ppc_elf_link_hash_table *htab;
6551 Elf_Internal_Rela *rel;
6552 Elf_Internal_Rela *relend;
6553 Elf_Internal_Rela outrel;
6554 bfd_byte *loc;
a6aa5195 6555 asection *got2, *sreloc = NULL;
252b5132 6556 bfd_vma *local_got_offsets;
b34976b6 6557 bfd_boolean ret = TRUE;
4fe5ca5b 6558 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 6559 bfd_boolean is_vxworks_tls;
b34976b6 6560
252b5132 6561#ifdef DEBUG
d003868e
AM
6562 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6563 "%ld relocations%s",
6564 input_bfd, input_section,
6565 (long) input_section->reloc_count,
6566 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH
6567#endif
6568
a6aa5195
AM
6569 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6570
e47cd125 6571 /* Initialize howto table if not already done. */
8da6118f 6572 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
6573 ppc_elf_howto_init ();
6574
7619e7c7 6575 htab = ppc_elf_hash_table (info);
252b5132 6576 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 6577 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 6578 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
6579 /* We have to handle relocations in vxworks .tls_vars sections
6580 specially, because the dynamic loader is 'weird'. */
6581 is_vxworks_tls = (htab->is_vxworks && info->shared
6582 && !strcmp (input_section->output_section->name,
6583 ".tls_vars"));
7619e7c7
AM
6584 rel = relocs;
6585 relend = relocs + input_section->reloc_count;
252b5132
RH
6586 for (; rel < relend; rel++)
6587 {
7619e7c7
AM
6588 enum elf_ppc_reloc_type r_type;
6589 bfd_vma addend;
6590 bfd_reloc_status_type r;
6591 Elf_Internal_Sym *sym;
6592 asection *sec;
6593 struct elf_link_hash_entry *h;
6594 const char *sym_name;
252b5132
RH
6595 reloc_howto_type *howto;
6596 unsigned long r_symndx;
6597 bfd_vma relocation;
7619e7c7 6598 bfd_vma branch_bit, insn, from;
7619e7c7
AM
6599 bfd_boolean unresolved_reloc;
6600 bfd_boolean warned;
6601 unsigned int tls_type, tls_mask, tls_gd;
e054468f 6602 struct plt_entry **ifunc;
7619e7c7 6603
55fd94b0
AM
6604 r_type = ELF32_R_TYPE (rel->r_info);
6605 sym = NULL;
6606 sec = NULL;
6607 h = NULL;
7619e7c7
AM
6608 unresolved_reloc = FALSE;
6609 warned = FALSE;
252b5132 6610 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 6611
252b5132
RH
6612 if (r_symndx < symtab_hdr->sh_info)
6613 {
6614 sym = local_syms + r_symndx;
6615 sec = local_sections[r_symndx];
26c61ae5 6616 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 6617
8517fae7 6618 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
6619 }
6620 else
6621 {
b2a8e766
AM
6622 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6623 r_symndx, symtab_hdr, sym_hashes,
6624 h, sec, relocation,
6625 unresolved_reloc, warned);
9abc968f 6626
252b5132 6627 sym_name = h->root.root.string;
7619e7c7
AM
6628 }
6629
ab96bf03
AM
6630 if (sec != NULL && elf_discarded_section (sec))
6631 {
6632 /* For relocs against symbols from removed linkonce sections,
6633 or sections discarded by a linker script, we just want the
6634 section contents zeroed. Avoid any special processing. */
6635 howto = NULL;
6636 if (r_type < R_PPC_max)
6637 howto = ppc_elf_howto_table[r_type];
6638 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6639 rel->r_info = 0;
6640 rel->r_addend = 0;
6641 continue;
6642 }
6643
6644 if (info->relocatable)
6645 {
6646 if (got2 != NULL
6647 && r_type == R_PPC_PLTREL24
6648 && rel->r_addend >= 32768)
6649 {
6650 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6651 addend specifies the GOT pointer offset within .got2. */
6652 rel->r_addend += got2->output_offset;
6653 }
6654 continue;
6655 }
6656
7619e7c7
AM
6657 /* TLS optimizations. Replace instruction sequences and relocs
6658 based on information we collected in tls_optimize. We edit
6659 RELOCS so that --emit-relocs will output something sensible
6660 for the final instruction stream. */
6661 tls_mask = 0;
6662 tls_gd = 0;
727fc41e
AM
6663 if (h != NULL)
6664 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6665 else if (local_got_offsets != NULL)
7619e7c7 6666 {
e054468f 6667 struct plt_entry **local_plt;
727fc41e 6668 char *lgot_masks;
e054468f
AM
6669 local_plt
6670 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6671 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
727fc41e 6672 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM
6673 }
6674
6675 /* Ensure reloc mapping code below stays sane. */
6676 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6677 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6678 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6679 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6680 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6681 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6682 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6683 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6684 abort ();
6685 switch (r_type)
6686 {
6687 default:
6688 break;
6689
6690 case R_PPC_GOT_TPREL16:
6691 case R_PPC_GOT_TPREL16_LO:
e054468f 6692 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
6693 && (tls_mask & TLS_TPREL) == 0)
6694 {
6695 bfd_vma insn;
4fe5ca5b 6696 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7619e7c7
AM
6697 insn &= 31 << 21;
6698 insn |= 0x3c020000; /* addis 0,2,0 */
4fe5ca5b 6699 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7619e7c7
AM
6700 r_type = R_PPC_TPREL16_HA;
6701 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6702 }
6703 break;
6704
6705 case R_PPC_TLS:
e054468f 6706 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
6707 && (tls_mask & TLS_TPREL) == 0)
6708 {
6709 bfd_vma insn, rtra;
6710 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6711 if ((insn & ((31 << 26) | (31 << 11)))
6712 == ((31 << 26) | (2 << 11)))
6713 rtra = insn & ((1 << 26) - (1 << 16));
6714 else if ((insn & ((31 << 26) | (31 << 16)))
6715 == ((31 << 26) | (2 << 16)))
6716 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6717 else
6718 abort ();
6719 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6720 /* add -> addi. */
6721 insn = 14 << 26;
6722 else if ((insn & (31 << 1)) == 23 << 1
6723 && ((insn & (31 << 6)) < 14 << 6
6724 || ((insn & (31 << 6)) >= 16 << 6
6725 && (insn & (31 << 6)) < 24 << 6)))
6726 /* load and store indexed -> dform. */
6727 insn = (32 | ((insn >> 6) & 31)) << 26;
6728 else if ((insn & (31 << 1)) == 21 << 1
6729 && (insn & (0x1a << 6)) == 0)
6730 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6731 insn = (((58 | ((insn >> 6) & 4)) << 26)
6732 | ((insn >> 6) & 1));
6733 else if ((insn & (31 << 1)) == 21 << 1
6734 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6735 /* lwax -> lwa. */
6736 insn = (58 << 26) | 2;
6737 else
6738 abort ();
6739 insn |= rtra;
6740 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6741 r_type = R_PPC_TPREL16_LO;
6742 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 6743
7619e7c7 6744 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
6745 PPC_TPREL16_LO which is at low-order half-word. */
6746 rel->r_offset += d_offset;
7619e7c7
AM
6747 }
6748 break;
6749
6750 case R_PPC_GOT_TLSGD16_HI:
6751 case R_PPC_GOT_TLSGD16_HA:
6752 tls_gd = TLS_TPRELGD;
e054468f 6753 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7619e7c7
AM
6754 goto tls_gdld_hi;
6755 break;
6756
6757 case R_PPC_GOT_TLSLD16_HI:
6758 case R_PPC_GOT_TLSLD16_HA:
e054468f 6759 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7
AM
6760 {
6761 tls_gdld_hi:
6762 if ((tls_mask & tls_gd) != 0)
6763 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6764 + R_PPC_GOT_TPREL16);
6765 else
6766 {
6767 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 6768 rel->r_offset -= d_offset;
7619e7c7
AM
6769 r_type = R_PPC_NONE;
6770 }
6771 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6772 }
6773 break;
6774
6775 case R_PPC_GOT_TLSGD16:
6776 case R_PPC_GOT_TLSGD16_LO:
6777 tls_gd = TLS_TPRELGD;
e054468f 6778 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 6779 goto tls_ldgd_opt;
7619e7c7
AM
6780 break;
6781
6782 case R_PPC_GOT_TLSLD16:
6783 case R_PPC_GOT_TLSLD16_LO:
e054468f 6784 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7 6785 {
3a71aa26 6786 unsigned int insn1, insn2;
b7fcf6f6 6787 bfd_vma offset;
7619e7c7 6788
b7fcf6f6 6789 tls_ldgd_opt:
727fc41e
AM
6790 offset = (bfd_vma) -1;
6791 /* If not using the newer R_PPC_TLSGD/LD to mark
6792 __tls_get_addr calls, we must trust that the call
6793 stays with its arg setup insns, ie. that the next
6794 reloc is the __tls_get_addr call associated with
6795 the current reloc. Edit both insns. */
6796 if (input_section->has_tls_get_addr_call
6797 && rel + 1 < relend
6798 && branch_reloc_hash_match (input_bfd, rel + 1,
6799 htab->tls_get_addr))
6800 offset = rel[1].r_offset;
b7fcf6f6
AM
6801 if ((tls_mask & tls_gd) != 0)
6802 {
6803 /* IE */
3a71aa26
AM
6804 insn1 = bfd_get_32 (output_bfd,
6805 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
6806 insn1 &= (1 << 26) - 1;
6807 insn1 |= 32 << 26; /* lwz */
727fc41e
AM
6808 if (offset != (bfd_vma) -1)
6809 {
6810 rel[1].r_info
6811 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6812 R_PPC_NONE);
6813 insn2 = 0x7c631214; /* add 3,3,2 */
6814 bfd_put_32 (output_bfd, insn2, contents + offset);
6815 }
b7fcf6f6
AM
6816 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6817 + R_PPC_GOT_TPREL16);
6818 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6819 }
6820 else
6821 {
6822 /* LE */
6823 insn1 = 0x3c620000; /* addis 3,2,0 */
7619e7c7
AM
6824 if (tls_gd == 0)
6825 {
b7fcf6f6 6826 /* Was an LD reloc. */
1d483afe
AM
6827 for (r_symndx = 0;
6828 r_symndx < symtab_hdr->sh_info;
6829 r_symndx++)
6830 if (local_sections[r_symndx] == sec)
6831 break;
6832 if (r_symndx >= symtab_hdr->sh_info)
6833 r_symndx = 0;
b7fcf6f6 6834 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
1d483afe
AM
6835 if (r_symndx != 0)
6836 rel->r_addend -= (local_syms[r_symndx].st_value
6837 + sec->output_offset
6838 + sec->output_section->vma);
7619e7c7 6839 }
b7fcf6f6
AM
6840 r_type = R_PPC_TPREL16_HA;
6841 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM
6842 if (offset != (bfd_vma) -1)
6843 {
6844 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6845 rel[1].r_offset = offset + d_offset;
6846 rel[1].r_addend = rel->r_addend;
6847 insn2 = 0x38630000; /* addi 3,3,0 */
6848 bfd_put_32 (output_bfd, insn2, contents + offset);
6849 }
b7fcf6f6
AM
6850 }
6851 bfd_put_32 (output_bfd, insn1,
6852 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
6853 if (tls_gd == 0)
6854 {
6855 /* We changed the symbol on an LD reloc. Start over
6856 in order to get h, sym, sec etc. right. */
6857 rel--;
6858 continue;
7619e7c7 6859 }
252b5132 6860 }
7619e7c7 6861 break;
727fc41e
AM
6862
6863 case R_PPC_TLSGD:
e054468f 6864 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
727fc41e
AM
6865 {
6866 unsigned int insn2;
6867 bfd_vma offset = rel->r_offset;
6868
6869 if ((tls_mask & TLS_TPRELGD) != 0)
6870 {
6871 /* IE */
6872 r_type = R_PPC_NONE;
6873 insn2 = 0x7c631214; /* add 3,3,2 */
6874 }
6875 else
6876 {
6877 /* LE */
6878 r_type = R_PPC_TPREL16_LO;
6879 rel->r_offset += d_offset;
6880 insn2 = 0x38630000; /* addi 3,3,0 */
6881 }
6882 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6883 bfd_put_32 (output_bfd, insn2, contents + offset);
6884 /* Zap the reloc on the _tls_get_addr call too. */
6885 BFD_ASSERT (offset == rel[1].r_offset);
6886 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6887 R_PPC_NONE);
6888 }
6889 break;
6890
6891 case R_PPC_TLSLD:
e054468f 6892 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
727fc41e
AM
6893 {
6894 unsigned int insn2;
6895
6896 for (r_symndx = 0;
6897 r_symndx < symtab_hdr->sh_info;
6898 r_symndx++)
6899 if (local_sections[r_symndx] == sec)
6900 break;
6901 if (r_symndx >= symtab_hdr->sh_info)
6902 r_symndx = 0;
6903 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6904 if (r_symndx != 0)
6905 rel->r_addend -= (local_syms[r_symndx].st_value
6906 + sec->output_offset
6907 + sec->output_section->vma);
6908
6909 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6910 rel->r_offset += d_offset;
6911 insn2 = 0x38630000; /* addi 3,3,0 */
6912 bfd_put_32 (output_bfd, insn2,
6913 contents + rel->r_offset - d_offset);
6914 /* Zap the reloc on the _tls_get_addr call too. */
6915 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
6916 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6917 R_PPC_NONE);
6918 rel--;
6919 continue;
6920 }
6921 break;
7619e7c7
AM
6922 }
6923
6924 /* Handle other relocations that tweak non-addend part of insn. */
6925 branch_bit = 0;
6926 switch (r_type)
6927 {
6928 default:
6929 break;
6930
6931 /* Branch taken prediction relocations. */
6932 case R_PPC_ADDR14_BRTAKEN:
6933 case R_PPC_REL14_BRTAKEN:
6934 branch_bit = BRANCH_PREDICT_BIT;
6935 /* Fall thru */
6936
4cc11e76 6937 /* Branch not taken prediction relocations. */
7619e7c7
AM
6938 case R_PPC_ADDR14_BRNTAKEN:
6939 case R_PPC_REL14_BRNTAKEN:
6940 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6941 insn &= ~BRANCH_PREDICT_BIT;
6942 insn |= branch_bit;
6943
6944 from = (rel->r_offset
6945 + input_section->output_offset
6946 + input_section->output_section->vma);
6947
6948 /* Invert 'y' bit if not the default. */
6949 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6950 insn ^= BRANCH_PREDICT_BIT;
6951
6952 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6953 break;
252b5132
RH
6954 }
6955
e054468f 6956 ifunc = NULL;
25f23106 6957 if (!htab->is_vxworks)
e054468f 6958 {
de972ffa
AM
6959 struct plt_entry *ent;
6960
e054468f
AM
6961 if (h != NULL)
6962 {
6963 if (h->type == STT_GNU_IFUNC)
6964 ifunc = &h->plt.plist;
6965 }
de972ffa
AM
6966 else if (local_got_offsets != NULL
6967 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
e054468f 6968 {
de972ffa 6969 struct plt_entry **local_plt;
e054468f 6970
de972ffa
AM
6971 local_plt = (struct plt_entry **) (local_got_offsets
6972 + symtab_hdr->sh_info);
6973 ifunc = local_plt + r_symndx;
e054468f 6974 }
e054468f 6975
de972ffa
AM
6976 ent = NULL;
6977 if (ifunc != NULL
6978 && (!info->shared
6979 || is_branch_reloc (r_type)))
6980 {
6981 addend = 0;
a877a2b6 6982 if (r_type == R_PPC_PLTREL24 && info->shared)
de972ffa
AM
6983 addend = rel->r_addend;
6984 ent = find_plt_ent (ifunc, got2, addend);
6985 }
6986 if (ent != NULL)
6987 {
e054468f
AM
6988 if (h == NULL && (ent->plt.offset & 1) == 0)
6989 {
6990 Elf_Internal_Rela rela;
6991 bfd_byte *loc;
6992
6993 rela.r_offset = (htab->iplt->output_section->vma
6994 + htab->iplt->output_offset
6995 + ent->plt.offset);
6996 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
6997 rela.r_addend = relocation;
25f23106
AM
6998 loc = htab->reliplt->contents;
6999 loc += (htab->reliplt->reloc_count++
7000 * sizeof (Elf32_External_Rela));
e054468f
AM
7001 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7002
7003 ent->plt.offset |= 1;
7004 }
7005 if (h == NULL && (ent->glink_offset & 1) == 0)
7006 {
7007 write_glink_stub (ent, htab->iplt, info);
7008 ent->glink_offset |= 1;
7009 }
7010
7011 unresolved_reloc = FALSE;
7012 if (htab->plt_type == PLT_NEW
7013 || !htab->elf.dynamic_sections_created
7014 || h == NULL)
7015 relocation = (htab->glink->output_section->vma
7016 + htab->glink->output_offset
7017 + (ent->glink_offset & ~1));
7018 else
7019 relocation = (htab->plt->output_section->vma
7020 + htab->plt->output_offset
7021 + ent->plt.offset);
7022 }
7023 }
7024
7619e7c7
AM
7025 addend = rel->r_addend;
7026 tls_type = 0;
7027 howto = NULL;
55fd94b0
AM
7028 if (r_type < R_PPC_max)
7029 howto = ppc_elf_howto_table[r_type];
7619e7c7 7030 switch (r_type)
252b5132
RH
7031 {
7032 default:
7619e7c7 7033 (*_bfd_error_handler)
d003868e
AM
7034 (_("%B: unknown relocation type %d for symbol %s"),
7035 input_bfd, (int) r_type, sym_name);
252b5132
RH
7036
7037 bfd_set_error (bfd_error_bad_value);
b34976b6 7038 ret = FALSE;
252b5132
RH
7039 continue;
7040
7619e7c7
AM
7041 case R_PPC_NONE:
7042 case R_PPC_TLS:
727fc41e
AM
7043 case R_PPC_TLSGD:
7044 case R_PPC_TLSLD:
7619e7c7
AM
7045 case R_PPC_EMB_MRKREF:
7046 case R_PPC_GNU_VTINHERIT:
7047 case R_PPC_GNU_VTENTRY:
7595d193
L
7048 continue;
7049
7619e7c7
AM
7050 /* GOT16 relocations. Like an ADDR16 using the symbol's
7051 address in the GOT as relocation value instead of the
7052 symbol's value itself. Also, create a GOT entry for the
7053 symbol and put the symbol value there. */
7054 case R_PPC_GOT_TLSGD16:
7055 case R_PPC_GOT_TLSGD16_LO:
7056 case R_PPC_GOT_TLSGD16_HI:
7057 case R_PPC_GOT_TLSGD16_HA:
7058 tls_type = TLS_TLS | TLS_GD;
7059 goto dogot;
7060
7061 case R_PPC_GOT_TLSLD16:
7062 case R_PPC_GOT_TLSLD16_LO:
7063 case R_PPC_GOT_TLSLD16_HI:
7064 case R_PPC_GOT_TLSLD16_HA:
7065 tls_type = TLS_TLS | TLS_LD;
7066 goto dogot;
7067
7068 case R_PPC_GOT_TPREL16:
7069 case R_PPC_GOT_TPREL16_LO:
7070 case R_PPC_GOT_TPREL16_HI:
7071 case R_PPC_GOT_TPREL16_HA:
7072 tls_type = TLS_TLS | TLS_TPREL;
7073 goto dogot;
7074
7075 case R_PPC_GOT_DTPREL16:
7076 case R_PPC_GOT_DTPREL16_LO:
7077 case R_PPC_GOT_DTPREL16_HI:
7078 case R_PPC_GOT_DTPREL16_HA:
7079 tls_type = TLS_TLS | TLS_DTPREL;
7080 goto dogot;
7081
7082 case R_PPC_GOT16:
7083 case R_PPC_GOT16_LO:
7084 case R_PPC_GOT16_HI:
7085 case R_PPC_GOT16_HA:
727fc41e 7086 tls_mask = 0;
7619e7c7
AM
7087 dogot:
7088 {
7089 /* Relocation is to the entry for this symbol in the global
7090 offset table. */
7091 bfd_vma off;
7092 bfd_vma *offp;
7093 unsigned long indx;
7094
7095 if (htab->got == NULL)
7096 abort ();
7097
7098 indx = 0;
7099 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 7100 && (h == NULL
f5385ebf 7101 || !h->def_dynamic))
7619e7c7
AM
7102 offp = &htab->tlsld_got.offset;
7103 else if (h != NULL)
7104 {
7105 bfd_boolean dyn;
7106 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 7107 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM
7108 || (info->shared
7109 && SYMBOL_REFERENCES_LOCAL (info, h)))
7110 /* This is actually a static link, or it is a
7111 -Bsymbolic link and the symbol is defined
7112 locally, or the symbol was forced to be local
7113 because of a version file. */
7114 ;
7115 else
7116 {
7117 indx = h->dynindx;
7118 unresolved_reloc = FALSE;
7119 }
7120 offp = &h->got.offset;
7121 }
7122 else
7123 {
7124 if (local_got_offsets == NULL)
7125 abort ();
7126 offp = &local_got_offsets[r_symndx];
7127 }
7128
7129 /* The offset must always be a multiple of 4. We use the
7130 least significant bit to record whether we have already
7131 processed this entry. */
7132 off = *offp;
7133 if ((off & 1) != 0)
7134 off &= ~1;
7135 else
7136 {
25f23106 7137 asection *rsec;
70bccea4
AM
7138 unsigned int tls_m = (tls_mask
7139 & (TLS_LD | TLS_GD | TLS_DTPREL
7140 | TLS_TPREL | TLS_TPRELGD));
7141
7142 if (offp == &htab->tlsld_got.offset)
7143 tls_m = TLS_LD;
7144 else if (h == NULL
f5385ebf 7145 || !h->def_dynamic)
70bccea4
AM
7146 tls_m &= ~TLS_LD;
7147
7148 /* We might have multiple got entries for this sym.
7149 Initialize them all. */
7150 do
7619e7c7 7151 {
70bccea4
AM
7152 int tls_ty = 0;
7153
7154 if ((tls_m & TLS_LD) != 0)
7619e7c7 7155 {
70bccea4
AM
7156 tls_ty = TLS_TLS | TLS_LD;
7157 tls_m &= ~TLS_LD;
7158 }
7159 else if ((tls_m & TLS_GD) != 0)
7160 {
7161 tls_ty = TLS_TLS | TLS_GD;
7162 tls_m &= ~TLS_GD;
7163 }
7164 else if ((tls_m & TLS_DTPREL) != 0)
7165 {
7166 tls_ty = TLS_TLS | TLS_DTPREL;
7167 tls_m &= ~TLS_DTPREL;
7168 }
7169 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7170 {
7171 tls_ty = TLS_TLS | TLS_TPREL;
7172 tls_m = 0;
7619e7c7 7173 }
7619e7c7 7174
70bccea4 7175 /* Generate relocs for the dynamic linker. */
25f23106 7176 rsec = NULL;
4e795f50 7177 if ((info->shared || indx != 0)
d6e14abc
AM
7178 && (offp == &htab->tlsld_got.offset
7179 || h == NULL
4e795f50
AM
7180 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7181 || h->root.type != bfd_link_hash_undefweak))
25f23106
AM
7182 rsec = htab->relgot;
7183 else if (ifunc != NULL)
7184 rsec = htab->reliplt;
7185 if (rsec != NULL)
7619e7c7 7186 {
70bccea4
AM
7187 outrel.r_offset = (htab->got->output_section->vma
7188 + htab->got->output_offset
7189 + off);
e515b051 7190 outrel.r_addend = 0;
70bccea4
AM
7191 if (tls_ty & (TLS_LD | TLS_GD))
7192 {
7193 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
7194 if (tls_ty == (TLS_TLS | TLS_GD))
7195 {
25f23106
AM
7196 loc = rsec->contents;
7197 loc += (rsec->reloc_count++
70bccea4
AM
7198 * sizeof (Elf32_External_Rela));
7199 bfd_elf32_swap_reloca_out (output_bfd,
7200 &outrel, loc);
e515b051 7201 outrel.r_offset += 4;
70bccea4
AM
7202 outrel.r_info
7203 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
7204 }
7205 }
7206 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7207 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7208 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7209 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
25f23106 7210 else if (indx != 0)
70bccea4 7211 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
25f23106
AM
7212 else if (ifunc != NULL)
7213 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7214 else
7215 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
d6e14abc 7216 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM
7217 {
7218 outrel.r_addend += relocation;
7219 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 7220 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 7221 }
25f23106
AM
7222 loc = rsec->contents;
7223 loc += (rsec->reloc_count++
70bccea4
AM
7224 * sizeof (Elf32_External_Rela));
7225 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
7226 }
7227
70bccea4
AM
7228 /* Init the .got section contents if we're not
7229 emitting a reloc. */
7230 else
7619e7c7 7231 {
70bccea4
AM
7232 bfd_vma value = relocation;
7233
7b609f53
AM
7234 if (tls_ty == (TLS_TLS | TLS_LD))
7235 value = 1;
7236 else if (tls_ty != 0)
70bccea4 7237 {
e1918d23 7238 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 7239 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 7240 value += DTP_OFFSET - TP_OFFSET;
70bccea4 7241
7b609f53
AM
7242 if (tls_ty == (TLS_TLS | TLS_GD))
7243 {
7244 bfd_put_32 (output_bfd, value,
7245 htab->got->contents + off + 4);
7246 value = 1;
7247 }
70bccea4 7248 }
70bccea4
AM
7249 bfd_put_32 (output_bfd, value,
7250 htab->got->contents + off);
7619e7c7 7251 }
70bccea4
AM
7252
7253 off += 4;
7254 if (tls_ty & (TLS_LD | TLS_GD))
7255 off += 4;
7619e7c7 7256 }
70bccea4
AM
7257 while (tls_m != 0);
7258
7259 off = *offp;
7260 *offp = off | 1;
7619e7c7
AM
7261 }
7262
7263 if (off >= (bfd_vma) -2)
7264 abort ();
7265
70bccea4
AM
7266 if ((tls_type & TLS_TLS) != 0)
7267 {
7268 if (tls_type != (TLS_TLS | TLS_LD))
7269 {
7270 if ((tls_mask & TLS_LD) != 0
7271 && !(h == NULL
f5385ebf 7272 || !h->def_dynamic))
70bccea4
AM
7273 off += 8;
7274 if (tls_type != (TLS_TLS | TLS_GD))
7275 {
7276 if ((tls_mask & TLS_GD) != 0)
7277 off += 8;
7278 if (tls_type != (TLS_TLS | TLS_DTPREL))
7279 {
7280 if ((tls_mask & TLS_DTPREL) != 0)
7281 off += 4;
7282 }
7283 }
7284 }
7285 }
7286
e87d4038
AM
7287 relocation = (htab->got->output_section->vma
7288 + htab->got->output_offset
7289 + off
7290 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
7291
7292 /* Addends on got relocations don't make much sense.
7293 x+off@got is actually x@got+off, and since the got is
7294 generated by a hash table traversal, the value in the
7295 got at entry m+n bears little relation to the entry m. */
7296 if (addend != 0)
7297 (*_bfd_error_handler)
d003868e
AM
7298 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
7299 input_bfd,
7300 input_section,
7619e7c7 7301 (long) rel->r_offset,
7b609f53 7302 howto->name,
7619e7c7
AM
7303 sym_name);
7304 }
70bccea4 7305 break;
7619e7c7 7306
252b5132 7307 /* Relocations that need no special processing. */
7619e7c7 7308 case R_PPC_LOCAL24PC:
252b5132
RH
7309 /* It makes no sense to point a local relocation
7310 at a symbol not in this object. */
7b609f53 7311 if (unresolved_reloc)
252b5132 7312 {
464e1740
ILT
7313 if (! (*info->callbacks->undefined_symbol) (info,
7314 h->root.root.string,
7315 input_bfd,
7316 input_section,
5cc7c785 7317 rel->r_offset,
b34976b6
AM
7318 TRUE))
7319 return FALSE;
252b5132
RH
7320 continue;
7321 }
7322 break;
7323
7619e7c7
AM
7324 case R_PPC_DTPREL16:
7325 case R_PPC_DTPREL16_LO:
7326 case R_PPC_DTPREL16_HI:
7327 case R_PPC_DTPREL16_HA:
e1918d23 7328 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
7329 break;
7330
70bccea4
AM
7331 /* Relocations that may need to be propagated if this is a shared
7332 object. */
7619e7c7
AM
7333 case R_PPC_TPREL16:
7334 case R_PPC_TPREL16_LO:
7335 case R_PPC_TPREL16_HI:
7336 case R_PPC_TPREL16_HA:
e1918d23 7337 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
7338 /* The TPREL16 relocs shouldn't really be used in shared
7339 libs as they will result in DT_TEXTREL being set, but
7340 support them anyway. */
7341 goto dodyn;
7342
7343 case R_PPC_TPREL32:
e1918d23 7344 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
7345 goto dodyn;
7346
7347 case R_PPC_DTPREL32:
e1918d23 7348 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
7349 goto dodyn;
7350
e515b051
AM
7351 case R_PPC_DTPMOD32:
7352 relocation = 1;
7353 addend = 0;
7354 goto dodyn;
7355
d7128ce4
AM
7356 case R_PPC_REL16:
7357 case R_PPC_REL16_LO:
7358 case R_PPC_REL16_HI:
7359 case R_PPC_REL16_HA:
7360 break;
7361
7619e7c7 7362 case R_PPC_REL32:
625af618
AM
7363 if (h == NULL || h == htab->elf.hgot)
7364 break;
7365 /* fall through */
7366
7367 case R_PPC_ADDR32:
7368 case R_PPC_ADDR16:
7369 case R_PPC_ADDR16_LO:
7370 case R_PPC_ADDR16_HI:
7371 case R_PPC_ADDR16_HA:
7372 case R_PPC_UADDR32:
7373 case R_PPC_UADDR16:
7374 goto dodyn;
7375
7376 case R_PPC_REL24:
7619e7c7
AM
7377 case R_PPC_REL14:
7378 case R_PPC_REL14_BRTAKEN:
7379 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
7380 /* If these relocations are not to a named symbol, they can be
7381 handled right here, no need to bother the dynamic linker. */
89200bf8 7382 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 7383 || h == htab->elf.hgot)
252b5132 7384 break;
70bccea4 7385 /* fall through */
252b5132 7386
7619e7c7 7387 case R_PPC_ADDR24:
7619e7c7
AM
7388 case R_PPC_ADDR14:
7389 case R_PPC_ADDR14_BRTAKEN:
7390 case R_PPC_ADDR14_BRNTAKEN:
625af618
AM
7391 if (h != NULL && !info->shared)
7392 break;
7393 /* fall through */
7394
7619e7c7 7395 dodyn:
3348747a
NS
7396 if ((input_section->flags & SEC_ALLOC) == 0
7397 || is_vxworks_tls)
c87b5a93 7398 break;
c87b5a93 7399
ee05f2fe 7400 if ((info->shared
89200bf8
AM
7401 && !(h != NULL
7402 && ((h->root.type == bfd_link_hash_undefined
7403 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7404 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7405 || (h->root.type == bfd_link_hash_undefweak
7406 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 7407 && (must_be_dyn_reloc (info, r_type)
f6c52c13 7408 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM
7409 || (ELIMINATE_COPY_RELOCS
7410 && !info->shared
ee05f2fe
AM
7411 && h != NULL
7412 && h->dynindx != -1
f5385ebf 7413 && !h->non_got_ref
de972ffa 7414 && !h->def_regular))
252b5132 7415 {
0bb2d96a 7416 int skip;
252b5132
RH
7417
7418#ifdef DEBUG
55fd94b0
AM
7419 fprintf (stderr, "ppc_elf_relocate_section needs to "
7420 "create relocation for %s\n",
70bccea4
AM
7421 (h && h->root.root.string
7422 ? h->root.root.string : "<unknown>"));
252b5132
RH
7423#endif
7424
7425 /* When generating a shared object, these relocations
70bccea4
AM
7426 are copied into the output file to be resolved at run
7427 time. */
252b5132
RH
7428 if (sreloc == NULL)
7429 {
25f23106
AM
7430 sreloc = elf_section_data (input_section)->sreloc;
7431 if (!htab->elf.dynamic_sections_created)
7432 sreloc = htab->reliplt;
83bac4b0 7433 if (sreloc == NULL)
b34976b6 7434 return FALSE;
252b5132
RH
7435 }
7436
0bb2d96a 7437 skip = 0;
c629eae0
JJ
7438 outrel.r_offset =
7439 _bfd_elf_section_offset (output_bfd, info, input_section,
7440 rel->r_offset);
0bb2d96a
JJ
7441 if (outrel.r_offset == (bfd_vma) -1
7442 || outrel.r_offset == (bfd_vma) -2)
7443 skip = (int) outrel.r_offset;
252b5132
RH
7444 outrel.r_offset += (input_section->output_section->vma
7445 + input_section->output_offset);
7446
7447 if (skip)
7448 memset (&outrel, 0, sizeof outrel);
89200bf8
AM
7449 else if ((h != NULL
7450 && (h->root.type == bfd_link_hash_undefined
7451 || h->root.type == bfd_link_hash_undefweak))
7452 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 7453 {
7619e7c7 7454 unresolved_reloc = FALSE;
252b5132
RH
7455 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7456 outrel.r_addend = rel->r_addend;
7457 }
7458 else
7459 {
47388f4c
AM
7460 outrel.r_addend = relocation + rel->r_addend;
7461
25f23106 7462 if (r_type != R_PPC_ADDR32)
252b5132 7463 {
89200bf8 7464 long indx = 0;
252b5132 7465
25f23106
AM
7466 if (ifunc != NULL)
7467 {
7468 /* If we get here when building a static
7469 executable, then the libc startup function
7470 responsible for applying indirect function
7471 relocations is going to complain about
7472 the reloc type.
7473 If we get here when building a dynamic
7474 executable, it will be because we have
7475 a text relocation. The dynamic loader
7476 will set the text segment writable and
7477 non-executable to apply text relocations.
7478 So we'll segfault when trying to run the
7479 indirection function to resolve the reloc. */
7480 (*_bfd_error_handler)
7481 (_("%B(%A+0x%lx): relocation %s for indirect "
7482 "function %s unsupported"),
7483 input_bfd,
7484 input_section,
7485 (long) rel->r_offset,
7486 howto->name,
7487 sym_name);
7488 ret = FALSE;
7489 }
7490 else if (r_symndx == 0 || bfd_is_abs_section (sec))
89200bf8 7491 ;
252b5132
RH
7492 else if (sec == NULL || sec->owner == NULL)
7493 {
7494 bfd_set_error (bfd_error_bad_value);
89200bf8 7495 ret = FALSE;
252b5132
RH
7496 }
7497 else
7498 {
7499 asection *osec;
7500
47388f4c
AM
7501 /* We are turning this relocation into one
7502 against a section symbol. It would be
7503 proper to subtract the symbol's value,
7504 osec->vma, from the emitted reloc addend,
25f23106
AM
7505 but ld.so expects buggy relocs.
7506 FIXME: Why not always use a zero index? */
252b5132
RH
7507 osec = sec->output_section;
7508 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
7509 if (indx == 0)
7510 {
7511 osec = htab->elf.text_index_section;
7512 indx = elf_section_data (osec)->dynindx;
7513 }
7514 BFD_ASSERT (indx != 0);
252b5132 7515#ifdef DEBUG
74541ad4 7516 if (indx == 0)
e460dd0d 7517 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
7518 indx, osec->name, osec->flags,
7519 h->root.root.string);
252b5132
RH
7520#endif
7521 }
7522
7523 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132 7524 }
25f23106
AM
7525 else if (ifunc != NULL)
7526 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7527 else
7528 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
7529 }
7530
947216bf
AM
7531 loc = sreloc->contents;
7532 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7533 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 7534
2243deae 7535 if (skip == -1)
252b5132 7536 continue;
2243deae
L
7537
7538 /* This reloc will be computed at runtime. We clear the memory
7539 so that it contains predictable value. */
7540 if (! skip
7541 && ((input_section->flags & SEC_ALLOC) != 0
7542 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7543 {
7544 relocation = howto->pc_relative ? outrel.r_offset : 0;
7545 addend = 0;
7546 break;
7547 }
252b5132 7548 }
252b5132
RH
7549 break;
7550
b4a38de6
AM
7551 case R_PPC_RELAX32PC_PLT:
7552 case R_PPC_RELAX32_PLT:
de972ffa
AM
7553 if (h != NULL)
7554 {
7555 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
a877a2b6 7556 info->shared ? addend : 0);
de972ffa
AM
7557 if (htab->plt_type == PLT_NEW)
7558 relocation = (htab->glink->output_section->vma
7559 + htab->glink->output_offset
7560 + ent->glink_offset);
7561 else
7562 relocation = (htab->plt->output_section->vma
7563 + htab->plt->output_offset
7564 + ent->plt.offset);
7565 }
b4a38de6
AM
7566 if (r_type == R_PPC_RELAX32_PLT)
7567 goto relax32;
7568 /* Fall thru */
7569
f31a141e
AM
7570 case R_PPC_RELAX32PC:
7571 relocation -= (input_section->output_section->vma
7572 + input_section->output_offset
7573 + rel->r_offset - 4);
7574 /* Fall thru */
b4a38de6 7575
deaaf2f3 7576 case R_PPC_RELAX32:
b4a38de6 7577 relax32:
9abc968f
AM
7578 {
7579 unsigned long t0;
7580 unsigned long t1;
7581
7582 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7583 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7584
7585 /* We're clearing the bits for R_PPC_ADDR16_HA
7586 and R_PPC_ADDR16_LO here. */
7587 t0 &= ~0xffff;
7588 t1 &= ~0xffff;
7589
7590 /* t0 is HA, t1 is LO */
7591 relocation += addend;
7592 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7593 t1 |= relocation & 0xffff;
7594
7595 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7596 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
9bc4e62b
NS
7597
7598 /* Rewrite the reloc and convert one of the trailing nop
7599 relocs to describe this relocation. */
7600 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7601 /* The relocs are at the bottom 2 bytes */
7602 rel[0].r_offset += 2;
7603 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7604 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7605 rel[1].r_offset += 4;
7606 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7607 rel++;
9abc968f 7608 }
8517fae7 7609 continue;
deaaf2f3 7610
70bccea4 7611 /* Indirect .sdata relocation. */
7619e7c7 7612 case R_PPC_EMB_SDAI16:
c9a2f333 7613 BFD_ASSERT (htab->sdata[0].section != NULL);
7619e7c7 7614 relocation
76750a2f
AM
7615 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7616 h, relocation, rel);
252b5132
RH
7617 break;
7618
70bccea4 7619 /* Indirect .sdata2 relocation. */
7619e7c7 7620 case R_PPC_EMB_SDA2I16:
c9a2f333 7621 BFD_ASSERT (htab->sdata[1].section != NULL);
7619e7c7 7622 relocation
76750a2f
AM
7623 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7624 h, relocation, rel);
252b5132
RH
7625 break;
7626
70bccea4
AM
7627 /* Handle the TOC16 reloc. We want to use the offset within the .got
7628 section, not the actual VMA. This is appropriate when generating
7629 an embedded ELF object, for which the .got section acts like the
7630 AIX .toc section. */
7619e7c7 7631 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
7632 if (sec == NULL || sec->output_section == NULL)
7633 {
7634 unresolved_reloc = TRUE;
7635 break;
7636 }
7637 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
f12123c0 7638 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
252b5132 7639
3b4f3a11 7640 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
7641 break;
7642
7619e7c7 7643 case R_PPC_PLTREL24:
e054468f 7644 if (h == NULL || ifunc != NULL)
6d78d0b9 7645 break;
252b5132 7646 /* Relocation is to the entry for this symbol in the
70bccea4 7647 procedure linkage table. */
a6aa5195 7648 {
a877a2b6
AM
7649 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7650 info->shared ? addend : 0);
a6aa5195
AM
7651 addend = 0;
7652 if (ent == NULL
7653 || htab->plt == NULL)
7654 {
7655 /* We didn't make a PLT entry for this symbol. This
7656 happens when statically linking PIC code, or when
7657 using -Bsymbolic. */
7658 break;
7659 }
252b5132 7660
a6aa5195 7661 unresolved_reloc = FALSE;
4a3dc543 7662 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
7663 relocation = (htab->glink->output_section->vma
7664 + htab->glink->output_offset
7665 + ent->glink_offset);
7666 else
7667 relocation = (htab->plt->output_section->vma
7668 + htab->plt->output_offset
7669 + ent->plt.offset);
7670 }
8da6118f 7671 break;
252b5132 7672
70bccea4 7673 /* Relocate against _SDA_BASE_. */
7619e7c7 7674 case R_PPC_SDAREL16:
252b5132
RH
7675 {
7676 const char *name;
7677
3b4f3a11
AM
7678 if (sec == NULL || sec->output_section == NULL)
7679 {
7680 unresolved_reloc = TRUE;
7681 break;
7682 }
7683
252b5132 7684 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7685 if (! ((CONST_STRNEQ (name, ".sdata")
5f819128 7686 && (name[6] == 0 || name[6] == '.'))
0112cd26 7687 || (CONST_STRNEQ (name, ".sbss")
5f819128 7688 && (name[5] == 0 || name[5] == '.'))))
252b5132 7689 {
55fd94b0 7690 (*_bfd_error_handler)
d003868e 7691 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7692 "in the wrong output section (%s)"),
d003868e 7693 input_bfd,
55fd94b0
AM
7694 sym_name,
7695 howto->name,
7696 name);
252b5132 7697 }
e87d4038 7698 addend -= SYM_VAL (htab->sdata[0].sym);
252b5132
RH
7699 }
7700 break;
7701
70bccea4 7702 /* Relocate against _SDA2_BASE_. */
7619e7c7 7703 case R_PPC_EMB_SDA2REL:
252b5132
RH
7704 {
7705 const char *name;
7706
3b4f3a11
AM
7707 if (sec == NULL || sec->output_section == NULL)
7708 {
7709 unresolved_reloc = TRUE;
7710 break;
7711 }
7712
252b5132 7713 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26
NC
7714 if (! (CONST_STRNEQ (name, ".sdata2")
7715 || CONST_STRNEQ (name, ".sbss2")))
252b5132 7716 {
55fd94b0 7717 (*_bfd_error_handler)
d003868e 7718 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7719 "in the wrong output section (%s)"),
d003868e 7720 input_bfd,
55fd94b0
AM
7721 sym_name,
7722 howto->name,
7723 name);
c3668558 7724
252b5132 7725 bfd_set_error (bfd_error_bad_value);
b34976b6 7726 ret = FALSE;
252b5132
RH
7727 continue;
7728 }
e87d4038 7729 addend -= SYM_VAL (htab->sdata[1].sym);
252b5132
RH
7730 }
7731 break;
7732
70bccea4 7733 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7
AM
7734 case R_PPC_EMB_SDA21:
7735 case R_PPC_EMB_RELSDA:
252b5132
RH
7736 {
7737 const char *name;
7738 int reg;
7739
3b4f3a11
AM
7740 if (sec == NULL || sec->output_section == NULL)
7741 {
7742 unresolved_reloc = TRUE;
7743 break;
7744 }
7745
252b5132 7746 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7747 if (((CONST_STRNEQ (name, ".sdata")
5f819128 7748 && (name[6] == 0 || name[6] == '.'))
0112cd26 7749 || (CONST_STRNEQ (name, ".sbss")
5f819128 7750 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH
7751 {
7752 reg = 13;
e87d4038 7753 addend -= SYM_VAL (htab->sdata[0].sym);
252b5132 7754 }
0112cd26
NC
7755 else if (CONST_STRNEQ (name, ".sdata2")
7756 || CONST_STRNEQ (name, ".sbss2"))
252b5132
RH
7757 {
7758 reg = 2;
e87d4038 7759 addend -= SYM_VAL (htab->sdata[1].sym);
252b5132 7760 }
8da6118f
KH
7761 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7762 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
7763 {
7764 reg = 0;
7765 }
252b5132
RH
7766 else
7767 {
55fd94b0 7768 (*_bfd_error_handler)
d003868e 7769 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7770 "in the wrong output section (%s)"),
d003868e 7771 input_bfd,
55fd94b0
AM
7772 sym_name,
7773 howto->name,
7774 name);
252b5132
RH
7775
7776 bfd_set_error (bfd_error_bad_value);
b34976b6 7777 ret = FALSE;
252b5132
RH
7778 continue;
7779 }
7780
7781 if (r_type == R_PPC_EMB_SDA21)
7782 { /* fill in register field */
7619e7c7 7783 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 7784 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 7785 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
7786 }
7787 }
7788 break;
7789
70bccea4 7790 /* Relocate against the beginning of the section. */
7619e7c7
AM
7791 case R_PPC_SECTOFF:
7792 case R_PPC_SECTOFF_LO:
7793 case R_PPC_SECTOFF_HI:
7794 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
7795 if (sec == NULL || sec->output_section == NULL)
7796 {
7797 unresolved_reloc = TRUE;
7798 break;
7799 }
252b5132 7800 addend -= sec->output_section->vma;
252b5132
RH
7801 break;
7802
70bccea4 7803 /* Negative relocations. */
7619e7c7
AM
7804 case R_PPC_EMB_NADDR32:
7805 case R_PPC_EMB_NADDR16:
7806 case R_PPC_EMB_NADDR16_LO:
7807 case R_PPC_EMB_NADDR16_HI:
7808 case R_PPC_EMB_NADDR16_HA:
8da6118f 7809 addend -= 2 * relocation;
252b5132
RH
7810 break;
7811
7619e7c7
AM
7812 case R_PPC_COPY:
7813 case R_PPC_GLOB_DAT:
7814 case R_PPC_JMP_SLOT:
7815 case R_PPC_RELATIVE:
e054468f 7816 case R_PPC_IRELATIVE:
7619e7c7
AM
7817 case R_PPC_PLT32:
7818 case R_PPC_PLTREL32:
7819 case R_PPC_PLT16_LO:
7820 case R_PPC_PLT16_HI:
7821 case R_PPC_PLT16_HA:
7822 case R_PPC_ADDR30:
7823 case R_PPC_EMB_RELSEC16:
7824 case R_PPC_EMB_RELST_LO:
7825 case R_PPC_EMB_RELST_HI:
7826 case R_PPC_EMB_RELST_HA:
7827 case R_PPC_EMB_BIT_FLD:
7828 (*_bfd_error_handler)
d003868e
AM
7829 (_("%B: relocation %s is not yet supported for symbol %s."),
7830 input_bfd,
7619e7c7
AM
7831 howto->name,
7832 sym_name);
252b5132
RH
7833
7834 bfd_set_error (bfd_error_invalid_operation);
b34976b6 7835 ret = FALSE;
252b5132 7836 continue;
7619e7c7 7837 }
252b5132 7838
7619e7c7
AM
7839 /* Do any further special processing. */
7840 switch (r_type)
7841 {
7842 default:
7843 break;
7844
7845 case R_PPC_ADDR16_HA:
d7128ce4 7846 case R_PPC_REL16_HA:
7619e7c7
AM
7847 case R_PPC_SECTOFF_HA:
7848 case R_PPC_TPREL16_HA:
7849 case R_PPC_DTPREL16_HA:
7619e7c7
AM
7850 case R_PPC_EMB_NADDR16_HA:
7851 case R_PPC_EMB_RELST_HA:
7852 /* It's just possible that this symbol is a weak symbol
7b609f53 7853 that's not actually defined anywhere. In that case,
7619e7c7
AM
7854 'sec' would be NULL, and we should leave the symbol
7855 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
7856 if (sec == NULL)
7857 break;
7858 /* Fall thru */
7859
7860 case R_PPC_PLT16_HA:
7861 case R_PPC_GOT16_HA:
7862 case R_PPC_GOT_TLSGD16_HA:
7863 case R_PPC_GOT_TLSLD16_HA:
7864 case R_PPC_GOT_TPREL16_HA:
7865 case R_PPC_GOT_DTPREL16_HA:
7866 /* Add 0x10000 if sign bit in 0:15 is set.
7867 Bits 0:15 are not used. */
7868 addend += 0x8000;
7619e7c7 7869 break;
252b5132
RH
7870 }
7871
252b5132 7872#ifdef DEBUG
55fd94b0
AM
7873 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7874 "offset = %ld, addend = %ld\n",
252b5132 7875 howto->name,
8da6118f 7876 (int) r_type,
252b5132
RH
7877 sym_name,
7878 r_symndx,
7619e7c7 7879 (long) rel->r_offset,
8da6118f 7880 (long) addend);
252b5132
RH
7881#endif
7882
7619e7c7
AM
7883 if (unresolved_reloc
7884 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 7885 && h->def_dynamic))
7619e7c7
AM
7886 {
7887 (*_bfd_error_handler)
d003868e
AM
7888 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7889 input_bfd,
7890 input_section,
7619e7c7 7891 (long) rel->r_offset,
7b609f53 7892 howto->name,
7619e7c7
AM
7893 sym_name);
7894 ret = FALSE;
7895 }
7896
252b5132
RH
7897 r = _bfd_final_link_relocate (howto,
7898 input_bfd,
7899 input_section,
7900 contents,
7619e7c7 7901 rel->r_offset,
252b5132
RH
7902 relocation,
7903 addend);
7904
7619e7c7 7905 if (r != bfd_reloc_ok)
252b5132 7906 {
7619e7c7 7907 if (r == bfd_reloc_overflow)
252b5132 7908 {
7619e7c7
AM
7909 if (warned)
7910 continue;
7911 if (h != NULL
7912 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH
7913 && howto->pc_relative)
7914 {
7915 /* Assume this is a call protected by other code that
7916 detect the symbol is undefined. If this is the case,
7917 we can safely ignore the overflow. If not, the
7918 program is hosed anyway, and a little warning isn't
7919 going to help. */
252b5132 7920
dc1bc0c9
RH
7921 continue;
7922 }
252b5132 7923
7619e7c7 7924 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 7925 (h ? &h->root : NULL),
7619e7c7
AM
7926 sym_name,
7927 howto->name,
7928 rel->r_addend,
7929 input_bfd,
7930 input_section,
7931 rel->r_offset))
7932 return FALSE;
dc1bc0c9
RH
7933 }
7934 else
7935 {
7619e7c7 7936 (*_bfd_error_handler)
d003868e
AM
7937 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7938 input_bfd, input_section,
7b609f53 7939 (long) rel->r_offset, howto->name, sym_name, (int) r);
7619e7c7 7940 ret = FALSE;
252b5132
RH
7941 }
7942 }
7943 }
7944
252b5132
RH
7945#ifdef DEBUG
7946 fprintf (stderr, "\n");
7947#endif
7948
7949 return ret;
7950}
252b5132 7951\f
25dbc73a
AM
7952/* Finish up dynamic symbol handling. We set the contents of various
7953 dynamic sections here. */
c5fccbec 7954
b34976b6 7955static bfd_boolean
25dbc73a
AM
7956ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7957 struct bfd_link_info *info,
7958 struct elf_link_hash_entry *h,
7959 Elf_Internal_Sym *sym)
e1a9cb8e 7960{
25dbc73a 7961 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
7962 struct plt_entry *ent;
7963 bfd_boolean doneone;
e1a9cb8e 7964
25dbc73a
AM
7965#ifdef DEBUG
7966 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7967 h->root.root.string);
7968#endif
e1a9cb8e 7969
25dbc73a
AM
7970 htab = ppc_elf_hash_table (info);
7971 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 7972
a6aa5195
AM
7973 doneone = FALSE;
7974 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7975 if (ent->plt.offset != (bfd_vma) -1)
7976 {
7977 if (!doneone)
7978 {
7979 Elf_Internal_Rela rela;
7980 bfd_byte *loc;
7981 bfd_vma reloc_index;
e1a9cb8e 7982
e054468f 7983 if (htab->plt_type == PLT_NEW
25f23106
AM
7984 || !htab->elf.dynamic_sections_created
7985 || h->dynindx == -1)
9d8504b1
PB
7986 reloc_index = ent->plt.offset / 4;
7987 else
7988 {
7989 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7990 / htab->plt_slot_size);
7991 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 7992 && htab->plt_type == PLT_OLD)
9d8504b1
PB
7993 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
7994 }
7995
a6aa5195
AM
7996 /* This symbol has an entry in the procedure linkage table.
7997 Set it up. */
e054468f 7998 if (htab->plt_type == PLT_VXWORKS
25f23106
AM
7999 && htab->elf.dynamic_sections_created
8000 && h->dynindx != -1)
a6aa5195 8001 {
9d8504b1
PB
8002 bfd_vma got_offset;
8003 const bfd_vma *plt_entry;
8004
8005 /* The first three entries in .got.plt are reserved. */
8006 got_offset = (reloc_index + 3) * 4;
8007
8008 /* Use the right PLT. */
8009 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8010 : ppc_elf_vxworks_plt_entry;
8011
8012 /* Fill in the .plt on VxWorks. */
8013 if (info->shared)
8014 {
9d8504b1 8015 bfd_put_32 (output_bfd,
e87d4038 8016 plt_entry[0] | PPC_HA (got_offset),
9d8504b1
PB
8017 htab->plt->contents + ent->plt.offset + 0);
8018 bfd_put_32 (output_bfd,
e87d4038 8019 plt_entry[1] | PPC_LO (got_offset),
9d8504b1
PB
8020 htab->plt->contents + ent->plt.offset + 4);
8021 }
8022 else
8023 {
e87d4038 8024 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
8025
8026 bfd_put_32 (output_bfd,
e87d4038 8027 plt_entry[0] | PPC_HA (got_loc),
9d8504b1
PB
8028 htab->plt->contents + ent->plt.offset + 0);
8029 bfd_put_32 (output_bfd,
e87d4038 8030 plt_entry[1] | PPC_LO (got_loc),
9d8504b1
PB
8031 htab->plt->contents + ent->plt.offset + 4);
8032 }
8033
8034 bfd_put_32 (output_bfd, plt_entry[2],
8035 htab->plt->contents + ent->plt.offset + 8);
8036 bfd_put_32 (output_bfd, plt_entry[3],
8037 htab->plt->contents + ent->plt.offset + 12);
8038
8039 /* This instruction is an immediate load. The value loaded is
8040 the byte offset of the R_PPC_JMP_SLOT relocation from the
8041 start of the .rela.plt section. The value is stored in the
8042 low-order 16 bits of the load instruction. */
8043 /* NOTE: It appears that this is now an index rather than a
8044 prescaled offset. */
8045 bfd_put_32 (output_bfd,
8046 plt_entry[4] | reloc_index,
8047 htab->plt->contents + ent->plt.offset + 16);
8048 /* This instruction is a PC-relative branch whose target is
8049 the start of the PLT section. The address of this branch
8050 instruction is 20 bytes beyond the start of this PLT entry.
8051 The address is encoded in bits 6-29, inclusive. The value
8052 stored is right-shifted by two bits, permitting a 26-bit
8053 offset. */
8054 bfd_put_32 (output_bfd,
8055 (plt_entry[5]
8056 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8057 htab->plt->contents + ent->plt.offset + 20);
8058 bfd_put_32 (output_bfd, plt_entry[6],
8059 htab->plt->contents + ent->plt.offset + 24);
8060 bfd_put_32 (output_bfd, plt_entry[7],
8061 htab->plt->contents + ent->plt.offset + 28);
8062
8063 /* Fill in the GOT entry corresponding to this PLT slot with
8064 the address immediately after the the "bctr" instruction
8065 in this PLT entry. */
8066 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8067 + htab->plt->output_offset
8068 + ent->plt.offset + 16),
8069 htab->sgotplt->contents + got_offset);
8070
8071 if (!info->shared)
8072 {
8073 /* Fill in a couple of entries in .rela.plt.unloaded. */
8074 loc = htab->srelplt2->contents
8075 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8076 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8077 * sizeof (Elf32_External_Rela));
8078
8079 /* Provide the @ha relocation for the first instruction. */
8080 rela.r_offset = (htab->plt->output_section->vma
8081 + htab->plt->output_offset
8082 + ent->plt.offset + 2);
636ce3f5 8083 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
8084 R_PPC_ADDR16_HA);
8085 rela.r_addend = got_offset;
8086 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8087 loc += sizeof (Elf32_External_Rela);
8088
8089 /* Provide the @l relocation for the second instruction. */
8090 rela.r_offset = (htab->plt->output_section->vma
8091 + htab->plt->output_offset
8092 + ent->plt.offset + 6);
636ce3f5 8093 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
8094 R_PPC_ADDR16_LO);
8095 rela.r_addend = got_offset;
8096 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8097 loc += sizeof (Elf32_External_Rela);
8098
8099 /* Provide a relocation for the GOT entry corresponding to this
8100 PLT slot. Point it at the middle of the .plt entry. */
8101 rela.r_offset = (htab->sgotplt->output_section->vma
8102 + htab->sgotplt->output_offset
8103 + got_offset);
7325306f 8104 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
8105 R_PPC_ADDR32);
8106 rela.r_addend = ent->plt.offset + 16;
8107 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8108 }
8109
8110 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8111 In particular, the offset for the relocation is not the
8112 address of the PLT entry for this function, as specified
8113 by the ABI. Instead, the offset is set to the address of
8114 the GOT slot for this function. See EABI 4.4.4.1. */
8115 rela.r_offset = (htab->sgotplt->output_section->vma
8116 + htab->sgotplt->output_offset
8117 + got_offset);
8118
a6aa5195
AM
8119 }
8120 else
8121 {
e054468f 8122 asection *splt = htab->plt;
25f23106
AM
8123 if (!htab->elf.dynamic_sections_created
8124 || h->dynindx == -1)
e054468f
AM
8125 splt = htab->iplt;
8126
8127 rela.r_offset = (splt->output_section->vma
8128 + splt->output_offset
9d8504b1 8129 + ent->plt.offset);
e054468f 8130 if (htab->plt_type == PLT_OLD
25f23106
AM
8131 || !htab->elf.dynamic_sections_created
8132 || h->dynindx == -1)
9d8504b1
PB
8133 {
8134 /* We don't need to fill in the .plt. The ppc dynamic
8135 linker will fill it in. */
8136 }
8137 else
8138 {
8139 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8140 + htab->glink->output_section->vma
8141 + htab->glink->output_offset);
8142 bfd_put_32 (output_bfd, val,
e054468f 8143 splt->contents + ent->plt.offset);
9d8504b1 8144 }
a6aa5195 8145 }
e1a9cb8e 8146
a6aa5195 8147 /* Fill in the entry in the .rela.plt section. */
a6aa5195 8148 rela.r_addend = 0;
e054468f
AM
8149 if (!htab->elf.dynamic_sections_created
8150 || h->dynindx == -1)
8151 {
8152 BFD_ASSERT (h->type == STT_GNU_IFUNC
8153 && h->def_regular
8154 && (h->root.type == bfd_link_hash_defined
8155 || h->root.type == bfd_link_hash_defweak));
8156 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8157 rela.r_addend = SYM_VAL (h);
8158 }
8159 else
8160 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
e1a9cb8e 8161
25f23106
AM
8162 if (!htab->elf.dynamic_sections_created
8163 || h->dynindx == -1)
8164 loc = (htab->reliplt->contents
8165 + (htab->reliplt->reloc_count++
8166 * sizeof (Elf32_External_Rela)));
e054468f 8167 else
25f23106
AM
8168 loc = (htab->relplt->contents
8169 + reloc_index * sizeof (Elf32_External_Rela));
a6aa5195 8170 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 8171
a6aa5195
AM
8172 if (!h->def_regular)
8173 {
0eb4a168
AM
8174 /* Mark the symbol as undefined, rather than as
8175 defined in the .plt section. Leave the value if
8176 there were any relocations where pointer equality
8177 matters (this is a clue for the dynamic linker, to
8178 make function pointer comparisons work between an
8179 application and shared library), otherwise set it
8180 to zero. */
a6aa5195 8181 sym->st_shndx = SHN_UNDEF;
0eb4a168 8182 if (!h->pointer_equality_needed)
a6aa5195 8183 sym->st_value = 0;
0eb4a168
AM
8184 else if (!h->ref_regular_nonweak)
8185 {
625af618
AM
8186 /* This breaks function pointer comparisons, but
8187 that is better than breaking tests for a NULL
0eb4a168 8188 function pointer. */
0eb4a168
AM
8189 sym->st_value = 0;
8190 }
a6aa5195 8191 }
de972ffa
AM
8192 else if (h->type == STT_GNU_IFUNC
8193 && !info->shared)
8194 {
8195 /* Set the value of ifunc symbols in a non-pie
8196 executable to the glink entry. This is to avoid
8197 text relocations. We can't do this for ifunc in
8198 allocate_dynrelocs, as we do for normal dynamic
8199 function symbols with plt entries, because we need
8200 to keep the original value around for the ifunc
8201 relocation. */
8202 sym->st_shndx = (_bfd_elf_section_from_bfd_section
8203 (output_bfd, htab->glink->output_section));
8204 sym->st_value = (ent->glink_offset +
8205 htab->glink->output_offset
8206 + htab->glink->output_section->vma);
8207 }
a6aa5195
AM
8208 doneone = TRUE;
8209 }
e1a9cb8e 8210
e054468f 8211 if (htab->plt_type == PLT_NEW
25f23106
AM
8212 || !htab->elf.dynamic_sections_created
8213 || h->dynindx == -1)
a6aa5195 8214 {
e054468f 8215 asection *splt = htab->plt;
25f23106
AM
8216 if (!htab->elf.dynamic_sections_created
8217 || h->dynindx == -1)
e054468f 8218 splt = htab->iplt;
e1a9cb8e 8219
e054468f 8220 write_glink_stub (ent, splt, info);
e1a9cb8e 8221
a877a2b6 8222 if (!info->shared)
e054468f
AM
8223 /* We only need one non-PIC glink stub. */
8224 break;
a6aa5195
AM
8225 }
8226 else
8227 break;
8228 }
e1a9cb8e 8229
25dbc73a
AM
8230 if (h->needs_copy)
8231 {
8232 asection *s;
8233 Elf_Internal_Rela rela;
8234 bfd_byte *loc;
e1a9cb8e 8235
25dbc73a 8236 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 8237
25dbc73a
AM
8238#ifdef DEBUG
8239 fprintf (stderr, ", copy");
8240#endif
e1a9cb8e 8241
25dbc73a 8242 BFD_ASSERT (h->dynindx != -1);
86bbe32f 8243
4dc4a9a5 8244 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
8245 s = htab->relsbss;
8246 else
8247 s = htab->relbss;
8248 BFD_ASSERT (s != NULL);
e1a9cb8e 8249
e87d4038 8250 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
8251 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8252 rela.r_addend = 0;
8253 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8254 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8255 }
e1a9cb8e 8256
25dbc73a
AM
8257#ifdef DEBUG
8258 fprintf (stderr, "\n");
8259#endif
e1a9cb8e 8260
25dbc73a 8261 /* Mark some specially defined symbols as absolute. */
9d8504b1
PB
8262 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8263 || (!htab->is_vxworks
8264 && (h == htab->elf.hgot
8265 || strcmp (h->root.root.string,
8266 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
25dbc73a 8267 sym->st_shndx = SHN_ABS;
e1a9cb8e 8268
25dbc73a
AM
8269 return TRUE;
8270}
8271\f
8272static enum elf_reloc_type_class
8273ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 8274{
25dbc73a
AM
8275 switch (ELF32_R_TYPE (rela->r_info))
8276 {
8277 case R_PPC_RELATIVE:
8278 return reloc_class_relative;
8279 case R_PPC_REL24:
8280 case R_PPC_ADDR24:
8281 case R_PPC_JMP_SLOT:
8282 return reloc_class_plt;
8283 case R_PPC_COPY:
8284 return reloc_class_copy;
8285 default:
8286 return reloc_class_normal;
8287 }
e1a9cb8e 8288}
25dbc73a
AM
8289\f
8290/* Finish up the dynamic sections. */
e1a9cb8e 8291
25dbc73a
AM
8292static bfd_boolean
8293ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8294 struct bfd_link_info *info)
e1a9cb8e 8295{
25dbc73a 8296 asection *sdyn;
9d8504b1 8297 asection *splt;
25dbc73a 8298 struct ppc_elf_link_hash_table *htab;
1fe44d79 8299 bfd_vma got;
e87d4038
AM
8300 bfd *dynobj;
8301 bfd_boolean ret = TRUE;
e1a9cb8e 8302
25dbc73a
AM
8303#ifdef DEBUG
8304 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8305#endif
6b0817e5 8306
25dbc73a 8307 htab = ppc_elf_hash_table (info);
9d8504b1
PB
8308 dynobj = elf_hash_table (info)->dynobj;
8309 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8310 if (htab->is_vxworks)
8311 splt = bfd_get_section_by_name (dynobj, ".plt");
8312 else
8313 splt = NULL;
e1a9cb8e 8314
1fe44d79
AM
8315 got = 0;
8316 if (htab->elf.hgot != NULL)
e87d4038 8317 got = SYM_VAL (htab->elf.hgot);
1fe44d79 8318
25dbc73a 8319 if (htab->elf.dynamic_sections_created)
e1a9cb8e 8320 {
25dbc73a 8321 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 8322
25dbc73a 8323 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 8324
25dbc73a
AM
8325 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8326 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8327 for (; dyncon < dynconend; dyncon++)
8328 {
8329 Elf_Internal_Dyn dyn;
8330 asection *s;
e1a9cb8e 8331
9d8504b1 8332 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 8333
25dbc73a
AM
8334 switch (dyn.d_tag)
8335 {
8336 case DT_PLTGOT:
9d8504b1
PB
8337 if (htab->is_vxworks)
8338 s = htab->sgotplt;
8339 else
8340 s = htab->plt;
25dbc73a
AM
8341 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8342 break;
86bbe32f 8343
25dbc73a
AM
8344 case DT_PLTRELSZ:
8345 dyn.d_un.d_val = htab->relplt->size;
8346 break;
e1a9cb8e 8347
25dbc73a
AM
8348 case DT_JMPREL:
8349 s = htab->relplt;
8350 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8351 break;
2f89ff8d 8352
1fe44d79
AM
8353 case DT_PPC_GOT:
8354 dyn.d_un.d_ptr = got;
d7128ce4
AM
8355 break;
8356
9d8504b1
PB
8357 case DT_RELASZ:
8358 if (htab->is_vxworks)
8359 {
8360 if (htab->relplt)
8361 dyn.d_un.d_ptr -= htab->relplt->size;
8362 break;
8363 }
8364 continue;
8365
25dbc73a 8366 default:
7a2b07ff
NS
8367 if (htab->is_vxworks
8368 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8369 break;
25dbc73a
AM
8370 continue;
8371 }
4c45e5c9 8372
25dbc73a
AM
8373 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8374 }
8375 }
4c45e5c9 8376
3b36f7e6 8377 if (htab->got != NULL)
25dbc73a 8378 {
e79f5955
AM
8379 if (htab->elf.hgot->root.u.def.section == htab->got
8380 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
e87d4038 8381 {
e79f5955 8382 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 8383
e87d4038
AM
8384 p += htab->elf.hgot->root.u.def.value;
8385 if (htab->plt_type == PLT_OLD)
e79f5955
AM
8386 {
8387 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8388 so that a function can easily find the address of
8389 _GLOBAL_OFFSET_TABLE_. */
8390 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8391 < htab->elf.hgot->root.u.def.section->size);
8392 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8393 }
3b36f7e6 8394
e87d4038 8395 if (sdyn != NULL)
e79f5955
AM
8396 {
8397 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8398 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8399 < htab->elf.hgot->root.u.def.section->size);
8400 bfd_put_32 (output_bfd, val, p);
8401 }
e87d4038
AM
8402 }
8403 else
8404 {
8405 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
8406 htab->elf.hgot->root.root.string,
e79f5955
AM
8407 (htab->sgotplt != NULL
8408 ? htab->sgotplt->name : htab->got->name));
e87d4038
AM
8409 bfd_set_error (bfd_error_bad_value);
8410 ret = FALSE;
8411 }
25dbc73a
AM
8412
8413 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8414 }
8415
9d8504b1
PB
8416 /* Fill in the first entry in the VxWorks procedure linkage table. */
8417 if (splt && splt->size > 0)
8418 {
8419 /* Use the right PLT. */
8420 static const bfd_vma *plt_entry = NULL;
8421 plt_entry = info->shared ?
8422 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
8423
8424 if (!info->shared)
8425 {
e87d4038 8426 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 8427
e87d4038 8428 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 8429 splt->contents + 0);
e87d4038 8430 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
8431 splt->contents + 4);
8432 }
8433 else
8434 {
8435 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8436 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8437 }
8438 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8439 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8440 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8441 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8442 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8443 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8444
8445 if (! info->shared)
8446 {
8447 Elf_Internal_Rela rela;
8448 bfd_byte *loc;
8449
8450 loc = htab->srelplt2->contents;
8451
8452 /* Output the @ha relocation for the first instruction. */
8453 rela.r_offset = (htab->plt->output_section->vma
8454 + htab->plt->output_offset
8455 + 2);
636ce3f5 8456 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
8457 rela.r_addend = 0;
8458 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8459 loc += sizeof (Elf32_External_Rela);
8460
8461 /* Output the @l relocation for the second instruction. */
8462 rela.r_offset = (htab->plt->output_section->vma
8463 + htab->plt->output_offset
8464 + 6);
636ce3f5 8465 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
8466 rela.r_addend = 0;
8467 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8468 loc += sizeof (Elf32_External_Rela);
8469
8470 /* Fix up the remaining relocations. They may have the wrong
8471 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8472 in which symbols were output. */
8473 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8474 {
8475 Elf_Internal_Rela rel;
8476
8477 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 8478 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
8479 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8480 loc += sizeof (Elf32_External_Rela);
8481
8482 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 8483 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
8484 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8485 loc += sizeof (Elf32_External_Rela);
8486
8487 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 8488 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
8489 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8490 loc += sizeof (Elf32_External_Rela);
8491 }
8492 }
8493 }
8494
e054468f
AM
8495 if (htab->glink != NULL
8496 && htab->glink->contents != NULL
8497 && htab->elf.dynamic_sections_created)
d7128ce4
AM
8498 {
8499 unsigned char *p;
8500 unsigned char *endp;
a6aa5195 8501 bfd_vma res0;
d7128ce4 8502 unsigned int i;
a6aa5195
AM
8503
8504 /*
8505 * PIC glink code is the following:
8506 *
8507 * # ith PLT code stub.
8508 * addis 11,30,(plt+(i-1)*4-got)@ha
8509 * lwz 11,(plt+(i-1)*4-got)@l(11)
8510 * mtctr 11
8511 * bctr
8512 *
8513 * # A table of branches, one for each plt entry.
176a0d42 8514 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
8515 * # addresses, so (r11 - res_0) gives the plt index * 4.
8516 * res_0: b PLTresolve
8517 * res_1: b PLTresolve
8518 * .
8519 * # Some number of entries towards the end can be nops
8520 * res_n_m3: nop
8521 * res_n_m2: nop
8522 * res_n_m1:
8523 *
8524 * PLTresolve:
8525 * addis 11,11,(1f-res_0)@ha
8526 * mflr 0
8527 * bcl 20,31,1f
8528 * 1: addi 11,11,(1b-res_0)@l
8529 * mflr 12
8530 * mtlr 0
8531 * sub 11,11,12 # r11 = index * 4
8532 * addis 12,12,(got+4-1b)@ha
8533 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8534 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8535 * mtctr 0
8536 * add 0,11,11
8537 * add 11,0,11 # r11 = index * 12 = reloc offset.
8538 * bctr
8539 */
8540 static const unsigned int pic_plt_resolve[] =
8541 {
8542 ADDIS_11_11,
8543 MFLR_0,
8544 BCL_20_31,
8545 ADDI_11_11,
8546 MFLR_12,
8547 MTLR_0,
8548 SUB_11_11_12,
8549 ADDIS_12_12,
8550 LWZ_0_12,
8551 LWZ_12_12,
8552 MTCTR_0,
8553 ADD_0_11_11,
8554 ADD_11_0_11,
8555 BCTR,
8556 NOP,
8557 NOP
8558 };
8559
176a0d42
AM
8560 /*
8561 * Non-PIC glink code is a little simpler.
8562 *
8563 * # ith PLT code stub.
8564 * lis 11,(plt+(i-1)*4)@ha
8565 * lwz 11,(plt+(i-1)*4)@l(11)
8566 * mtctr 11
8567 * bctr
8568 *
8569 * The branch table is the same, then comes
8570 *
8571 * PLTresolve:
8572 * lis 12,(got+4)@ha
8573 * addis 11,11,(-res_0)@ha
8574 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8575 * addi 11,11,(-res_0)@l # r11 = index * 4
8576 * mtctr 0
8577 * add 0,11,11
8578 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8579 * add 11,0,11 # r11 = index * 12 = reloc offset.
8580 * bctr
8581 */
d7128ce4
AM
8582 static const unsigned int plt_resolve[] =
8583 {
a6aa5195
AM
8584 LIS_12,
8585 ADDIS_11_11,
8586 LWZ_0_12,
8587 ADDI_11_11,
d7128ce4 8588 MTCTR_0,
7e8aeb9a 8589 ADD_0_11_11,
a6aa5195 8590 LWZ_12_12,
7e8aeb9a 8591 ADD_11_0_11,
d7128ce4
AM
8592 BCTR,
8593 NOP,
8594 NOP,
a6aa5195
AM
8595 NOP,
8596 NOP,
8597 NOP,
8598 NOP,
d7128ce4
AM
8599 NOP
8600 };
8601
a6aa5195
AM
8602 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8603 abort ();
8604 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
8605 abort ();
8606
a6aa5195 8607 /* Build the branch table, one for each plt entry (less one),
86b9da88 8608 and perhaps some padding. */
a6aa5195
AM
8609 p = htab->glink->contents;
8610 p += htab->glink_pltresolve;
86b9da88
AM
8611 endp = htab->glink->contents;
8612 endp += htab->glink->size - GLINK_PLTRESOLVE;
8613 while (p < endp - 8 * 4)
8614 {
8615 bfd_put_32 (output_bfd, B + endp - p, p);
8616 p += 4;
8617 }
8618 while (p < endp)
8619 {
8620 bfd_put_32 (output_bfd, NOP, p);
8621 p += 4;
8622 }
8623
7e8aeb9a 8624 res0 = (htab->glink_pltresolve
86b9da88
AM
8625 + htab->glink->output_section->vma
8626 + htab->glink->output_offset);
8627
8628 /* Last comes the PLTresolve stub. */
a877a2b6 8629 if (info->shared)
7e8aeb9a 8630 {
a6aa5195 8631 bfd_vma bcl;
d7128ce4 8632
a6aa5195 8633 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 8634 {
a6aa5195 8635 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7e8aeb9a
AM
8636 p += 4;
8637 }
a6aa5195
AM
8638 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8639
8640 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8641 + htab->glink->output_section->vma
8642 + htab->glink->output_offset);
8643
8644 bfd_put_32 (output_bfd,
8645 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8646 bfd_put_32 (output_bfd,
8647 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8648 bfd_put_32 (output_bfd,
8649 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8650 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8651 {
8652 bfd_put_32 (output_bfd,
8653 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8654 bfd_put_32 (output_bfd,
8655 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8656 }
8657 else
8658 {
8659 bfd_put_32 (output_bfd,
8660 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8661 bfd_put_32 (output_bfd,
8662 LWZ_12_12 + 4, p + 9*4);
8663 }
7e8aeb9a
AM
8664 }
8665 else
d7128ce4 8666 {
a6aa5195 8667 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a
AM
8668 {
8669 bfd_put_32 (output_bfd, plt_resolve[i], p);
8670 p += 4;
8671 }
a6aa5195
AM
8672 p -= 4 * ARRAY_SIZE (plt_resolve);
8673
8674 bfd_put_32 (output_bfd,
8675 LIS_12 + PPC_HA (got + 4), p + 0*4);
8676 bfd_put_32 (output_bfd,
8677 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8678 bfd_put_32 (output_bfd,
8679 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8680 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8681 {
8682 bfd_put_32 (output_bfd,
8683 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8684 bfd_put_32 (output_bfd,
8685 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8686 }
8687 else
8688 {
8689 bfd_put_32 (output_bfd,
8690 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8691 bfd_put_32 (output_bfd,
8692 LWZ_12_12 + 4, p + 6*4);
8693 }
d7128ce4 8694 }
d7128ce4
AM
8695 }
8696
e87d4038 8697 return ret;
25dbc73a 8698}
e1a9cb8e 8699\f
252b5132
RH
8700#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8701#define TARGET_LITTLE_NAME "elf32-powerpcle"
8702#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8703#define TARGET_BIG_NAME "elf32-powerpc"
8704#define ELF_ARCH bfd_arch_powerpc
8705#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
8706#ifdef __QNXTARGET__
8707#define ELF_MAXPAGESIZE 0x1000
8708#else
252b5132 8709#define ELF_MAXPAGESIZE 0x10000
d0facd1b 8710#endif
b1342370 8711#define ELF_MINPAGESIZE 0x1000
24718e3b 8712#define ELF_COMMONPAGESIZE 0x1000
252b5132
RH
8713#define elf_info_to_howto ppc_elf_info_to_howto
8714
8715#ifdef EM_CYGNUS_POWERPC
8716#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8717#endif
8718
8719#ifdef EM_PPC_OLD
8720#define ELF_MACHINE_ALT2 EM_PPC_OLD
8721#endif
8722
8723#define elf_backend_plt_not_loaded 1
252b5132 8724#define elf_backend_can_gc_sections 1
51b64d56 8725#define elf_backend_can_refcount 1
b491616a 8726#define elf_backend_rela_normal 1
252b5132 8727
43c40ab2 8728#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 8729#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 8730#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 8731#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
157090f7 8732#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 8733#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 8734#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 8735#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 8736
feee612b 8737#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
8738#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8739#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8740#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8741#define elf_backend_relocate_section ppc_elf_relocate_section
8742#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8743#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 8744#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
8745#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8746#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8747#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 8748#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
8749#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8750#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8751#define elf_backend_fake_sections ppc_elf_fake_sections
8752#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
c5fccbec
DJ
8753#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8754#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 8755#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 8756#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
8757#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8758#define elf_backend_final_write_processing ppc_elf_final_write_processing
8759#define elf_backend_write_section ppc_elf_write_section
551b43fd 8760#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 8761#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 8762#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 8763#define elf_backend_init_index_section _bfd_elf_init_1_index_section
e054468f 8764#define elf_backend_post_process_headers _bfd_elf_set_osabi
252b5132
RH
8765
8766#include "elf32-target.h"
9d8504b1
PB
8767
8768/* VxWorks Target */
8769
8770#undef TARGET_LITTLE_SYM
8771#undef TARGET_LITTLE_NAME
8772
8773#undef TARGET_BIG_SYM
8774#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8775#undef TARGET_BIG_NAME
8776#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8777
d5e3d971
PB
8778/* VxWorks uses the elf default section flags for .plt. */
8779static const struct bfd_elf_special_section *
8780ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 8781{
d5e3d971
PB
8782 if (sec->name == NULL)
8783 return NULL;
8784
8785 if (strcmp (sec->name, ".plt") == 0)
8786 return _bfd_elf_get_sec_type_attr (abfd, sec);
8787
8788 return ppc_elf_get_sec_type_attr (abfd, sec);
8789}
9d8504b1
PB
8790
8791/* Like ppc_elf_link_hash_table_create, but overrides
8792 appropriately for VxWorks. */
8793static struct bfd_link_hash_table *
8794ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8795{
8796 struct bfd_link_hash_table *ret;
8797
8798 ret = ppc_elf_link_hash_table_create (abfd);
8799 if (ret)
8800 {
8801 struct ppc_elf_link_hash_table *htab
8802 = (struct ppc_elf_link_hash_table *)ret;
8803 htab->is_vxworks = 1;
4a3dc543 8804 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
8805 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8806 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8807 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8808 }
8809 return ret;
8810}
8811
8812/* Tweak magic VxWorks symbols as they are loaded. */
8813static bfd_boolean
8814ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8815 struct bfd_link_info *info,
8816 Elf_Internal_Sym *sym,
8817 const char **namep ATTRIBUTE_UNUSED,
8818 flagword *flagsp ATTRIBUTE_UNUSED,
8819 asection **secp,
8820 bfd_vma *valp)
8821{
8822 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8823 valp))
8824 return FALSE;
8825
8826 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8827}
8828
9d8504b1
PB
8829static void
8830ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8831{
8832 ppc_elf_final_write_processing(abfd, linker);
8833 elf_vxworks_final_write_processing(abfd, linker);
8834}
8835
8836/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8837 define it. */
8838#undef elf_backend_want_plt_sym
8839#define elf_backend_want_plt_sym 1
8840#undef elf_backend_want_got_plt
8841#define elf_backend_want_got_plt 1
8842#undef elf_backend_got_symbol_offset
8843#define elf_backend_got_symbol_offset 0
8844#undef elf_backend_plt_not_loaded
8845#define elf_backend_plt_not_loaded 0
8846#undef elf_backend_plt_readonly
8847#define elf_backend_plt_readonly 1
8848#undef elf_backend_got_header_size
8849#define elf_backend_got_header_size 12
8850
468392fb
AM
8851#undef bfd_elf32_get_synthetic_symtab
8852
9d8504b1
PB
8853#undef bfd_elf32_bfd_link_hash_table_create
8854#define bfd_elf32_bfd_link_hash_table_create \
8855 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
8856#undef elf_backend_add_symbol_hook
8857#define elf_backend_add_symbol_hook \
8858 ppc_elf_vxworks_add_symbol_hook
8859#undef elf_backend_link_output_symbol_hook
8860#define elf_backend_link_output_symbol_hook \
9c72ff84 8861 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
8862#undef elf_backend_final_write_processing
8863#define elf_backend_final_write_processing \
8864 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
8865#undef elf_backend_get_sec_type_attr
8866#define elf_backend_get_sec_type_attr \
8867 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
8868#undef elf_backend_emit_relocs
8869#define elf_backend_emit_relocs \
8870 elf_vxworks_emit_relocs
8871
8872#undef elf32_bed
8873#define elf32_bed ppc_elf_vxworks_bed
e054468f 8874#undef elf_backend_post_process_headers
9d8504b1
PB
8875
8876#include "elf32-target.h"