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[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
CommitLineData
252b5132 1/* PowerPC-specific support for 32-bit ELF
051d5130 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
0ffa91dd 3 2004, 2005, 2006, 2007, 2008 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
7fce784e 160\f
e47cd125 161static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 162
8da6118f 163static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH
164 /* This reloc does nothing. */
165 HOWTO (R_PPC_NONE, /* type */
166 0, /* rightshift */
167 2, /* size (0 = byte, 1 = short, 2 = long) */
168 32, /* bitsize */
b34976b6 169 FALSE, /* pc_relative */
252b5132
RH
170 0, /* bitpos */
171 complain_overflow_bitfield, /* complain_on_overflow */
172 bfd_elf_generic_reloc, /* special_function */
173 "R_PPC_NONE", /* name */
b34976b6 174 FALSE, /* partial_inplace */
252b5132
RH
175 0, /* src_mask */
176 0, /* dst_mask */
b34976b6 177 FALSE), /* pcrel_offset */
252b5132
RH
178
179 /* A standard 32 bit relocation. */
180 HOWTO (R_PPC_ADDR32, /* type */
181 0, /* rightshift */
182 2, /* size (0 = byte, 1 = short, 2 = long) */
183 32, /* bitsize */
b34976b6 184 FALSE, /* pc_relative */
252b5132
RH
185 0, /* bitpos */
186 complain_overflow_bitfield, /* complain_on_overflow */
187 bfd_elf_generic_reloc, /* special_function */
188 "R_PPC_ADDR32", /* name */
b34976b6 189 FALSE, /* partial_inplace */
252b5132
RH
190 0, /* src_mask */
191 0xffffffff, /* dst_mask */
b34976b6 192 FALSE), /* pcrel_offset */
252b5132
RH
193
194 /* An absolute 26 bit branch; the lower two bits must be zero.
195 FIXME: we don't check that, we just clear them. */
196 HOWTO (R_PPC_ADDR24, /* type */
197 0, /* rightshift */
198 2, /* size (0 = byte, 1 = short, 2 = long) */
199 26, /* bitsize */
b34976b6 200 FALSE, /* pc_relative */
252b5132
RH
201 0, /* bitpos */
202 complain_overflow_bitfield, /* complain_on_overflow */
203 bfd_elf_generic_reloc, /* special_function */
204 "R_PPC_ADDR24", /* name */
b34976b6 205 FALSE, /* partial_inplace */
252b5132
RH
206 0, /* src_mask */
207 0x3fffffc, /* dst_mask */
b34976b6 208 FALSE), /* pcrel_offset */
252b5132
RH
209
210 /* A standard 16 bit relocation. */
211 HOWTO (R_PPC_ADDR16, /* type */
212 0, /* rightshift */
213 1, /* size (0 = byte, 1 = short, 2 = long) */
214 16, /* bitsize */
b34976b6 215 FALSE, /* pc_relative */
252b5132
RH
216 0, /* bitpos */
217 complain_overflow_bitfield, /* complain_on_overflow */
218 bfd_elf_generic_reloc, /* special_function */
219 "R_PPC_ADDR16", /* name */
b34976b6 220 FALSE, /* partial_inplace */
252b5132
RH
221 0, /* src_mask */
222 0xffff, /* dst_mask */
b34976b6 223 FALSE), /* pcrel_offset */
252b5132
RH
224
225 /* A 16 bit relocation without overflow. */
226 HOWTO (R_PPC_ADDR16_LO, /* type */
227 0, /* rightshift */
228 1, /* size (0 = byte, 1 = short, 2 = long) */
229 16, /* bitsize */
b34976b6 230 FALSE, /* pc_relative */
252b5132
RH
231 0, /* bitpos */
232 complain_overflow_dont,/* complain_on_overflow */
233 bfd_elf_generic_reloc, /* special_function */
234 "R_PPC_ADDR16_LO", /* name */
b34976b6 235 FALSE, /* partial_inplace */
252b5132
RH
236 0, /* src_mask */
237 0xffff, /* dst_mask */
b34976b6 238 FALSE), /* pcrel_offset */
252b5132
RH
239
240 /* The high order 16 bits of an address. */
241 HOWTO (R_PPC_ADDR16_HI, /* type */
242 16, /* rightshift */
243 1, /* size (0 = byte, 1 = short, 2 = long) */
244 16, /* bitsize */
b34976b6 245 FALSE, /* pc_relative */
252b5132
RH
246 0, /* bitpos */
247 complain_overflow_dont, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_PPC_ADDR16_HI", /* name */
b34976b6 250 FALSE, /* partial_inplace */
252b5132
RH
251 0, /* src_mask */
252 0xffff, /* dst_mask */
b34976b6 253 FALSE), /* pcrel_offset */
252b5132
RH
254
255 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 256 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH
257 HOWTO (R_PPC_ADDR16_HA, /* type */
258 16, /* rightshift */
259 1, /* size (0 = byte, 1 = short, 2 = long) */
260 16, /* bitsize */
b34976b6 261 FALSE, /* pc_relative */
252b5132
RH
262 0, /* bitpos */
263 complain_overflow_dont, /* complain_on_overflow */
264 ppc_elf_addr16_ha_reloc, /* special_function */
265 "R_PPC_ADDR16_HA", /* name */
b34976b6 266 FALSE, /* partial_inplace */
252b5132
RH
267 0, /* src_mask */
268 0xffff, /* dst_mask */
b34976b6 269 FALSE), /* pcrel_offset */
252b5132
RH
270
271 /* An absolute 16 bit branch; the lower two bits must be zero.
272 FIXME: we don't check that, we just clear them. */
273 HOWTO (R_PPC_ADDR14, /* type */
274 0, /* rightshift */
275 2, /* size (0 = byte, 1 = short, 2 = long) */
276 16, /* bitsize */
b34976b6 277 FALSE, /* pc_relative */
252b5132
RH
278 0, /* bitpos */
279 complain_overflow_bitfield, /* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_PPC_ADDR14", /* name */
b34976b6 282 FALSE, /* partial_inplace */
252b5132
RH
283 0, /* src_mask */
284 0xfffc, /* dst_mask */
b34976b6 285 FALSE), /* pcrel_offset */
252b5132
RH
286
287 /* An absolute 16 bit branch, for which bit 10 should be set to
288 indicate that the branch is expected to be taken. The lower two
8da6118f 289 bits must be zero. */
252b5132
RH
290 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
291 0, /* rightshift */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
293 16, /* bitsize */
b34976b6 294 FALSE, /* pc_relative */
252b5132
RH
295 0, /* bitpos */
296 complain_overflow_bitfield, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 299 FALSE, /* partial_inplace */
252b5132
RH
300 0, /* src_mask */
301 0xfffc, /* dst_mask */
b34976b6 302 FALSE), /* pcrel_offset */
252b5132
RH
303
304 /* An absolute 16 bit branch, for which bit 10 should be set to
305 indicate that the branch is not expected to be taken. The lower
306 two bits must be zero. */
307 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
308 0, /* rightshift */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
310 16, /* bitsize */
b34976b6 311 FALSE, /* pc_relative */
252b5132
RH
312 0, /* bitpos */
313 complain_overflow_bitfield, /* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 316 FALSE, /* partial_inplace */
252b5132
RH
317 0, /* src_mask */
318 0xfffc, /* dst_mask */
b34976b6 319 FALSE), /* pcrel_offset */
252b5132 320
8da6118f 321 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH
322 HOWTO (R_PPC_REL24, /* type */
323 0, /* rightshift */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
325 26, /* bitsize */
b34976b6 326 TRUE, /* pc_relative */
252b5132
RH
327 0, /* bitpos */
328 complain_overflow_signed, /* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_PPC_REL24", /* name */
b34976b6 331 FALSE, /* partial_inplace */
252b5132
RH
332 0, /* src_mask */
333 0x3fffffc, /* dst_mask */
b34976b6 334 TRUE), /* pcrel_offset */
252b5132 335
8da6118f 336 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH
337 HOWTO (R_PPC_REL14, /* type */
338 0, /* rightshift */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
340 16, /* bitsize */
b34976b6 341 TRUE, /* pc_relative */
252b5132
RH
342 0, /* bitpos */
343 complain_overflow_signed, /* complain_on_overflow */
344 bfd_elf_generic_reloc, /* special_function */
345 "R_PPC_REL14", /* name */
b34976b6 346 FALSE, /* partial_inplace */
252b5132
RH
347 0, /* src_mask */
348 0xfffc, /* dst_mask */
b34976b6 349 TRUE), /* pcrel_offset */
252b5132 350
8da6118f 351 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
352 the branch is expected to be taken. The lower two bits must be
353 zero. */
354 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
355 0, /* rightshift */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
357 16, /* bitsize */
b34976b6 358 TRUE, /* pc_relative */
252b5132
RH
359 0, /* bitpos */
360 complain_overflow_signed, /* complain_on_overflow */
361 bfd_elf_generic_reloc, /* special_function */
362 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 363 FALSE, /* partial_inplace */
252b5132
RH
364 0, /* src_mask */
365 0xfffc, /* dst_mask */
b34976b6 366 TRUE), /* pcrel_offset */
252b5132 367
8da6118f 368 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
369 the branch is not expected to be taken. The lower two bits must
370 be zero. */
371 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
372 0, /* rightshift */
373 2, /* size (0 = byte, 1 = short, 2 = long) */
374 16, /* bitsize */
b34976b6 375 TRUE, /* pc_relative */
252b5132
RH
376 0, /* bitpos */
377 complain_overflow_signed, /* complain_on_overflow */
378 bfd_elf_generic_reloc, /* special_function */
379 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 380 FALSE, /* partial_inplace */
252b5132
RH
381 0, /* src_mask */
382 0xfffc, /* dst_mask */
b34976b6 383 TRUE), /* pcrel_offset */
252b5132
RH
384
385 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
386 symbol. */
387 HOWTO (R_PPC_GOT16, /* type */
388 0, /* rightshift */
389 1, /* size (0 = byte, 1 = short, 2 = long) */
390 16, /* bitsize */
b34976b6 391 FALSE, /* pc_relative */
252b5132
RH
392 0, /* bitpos */
393 complain_overflow_signed, /* complain_on_overflow */
394 bfd_elf_generic_reloc, /* special_function */
395 "R_PPC_GOT16", /* name */
b34976b6 396 FALSE, /* partial_inplace */
252b5132
RH
397 0, /* src_mask */
398 0xffff, /* dst_mask */
b34976b6 399 FALSE), /* pcrel_offset */
252b5132
RH
400
401 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
402 the symbol. */
403 HOWTO (R_PPC_GOT16_LO, /* type */
404 0, /* rightshift */
405 1, /* size (0 = byte, 1 = short, 2 = long) */
406 16, /* bitsize */
b34976b6 407 FALSE, /* pc_relative */
252b5132
RH
408 0, /* bitpos */
409 complain_overflow_dont, /* complain_on_overflow */
410 bfd_elf_generic_reloc, /* special_function */
411 "R_PPC_GOT16_LO", /* name */
b34976b6 412 FALSE, /* partial_inplace */
252b5132
RH
413 0, /* src_mask */
414 0xffff, /* dst_mask */
b34976b6 415 FALSE), /* pcrel_offset */
252b5132
RH
416
417 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
418 the symbol. */
419 HOWTO (R_PPC_GOT16_HI, /* type */
420 16, /* rightshift */
421 1, /* size (0 = byte, 1 = short, 2 = long) */
422 16, /* bitsize */
b34976b6 423 FALSE, /* pc_relative */
252b5132
RH
424 0, /* bitpos */
425 complain_overflow_bitfield, /* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
427 "R_PPC_GOT16_HI", /* name */
b34976b6 428 FALSE, /* partial_inplace */
252b5132
RH
429 0, /* src_mask */
430 0xffff, /* dst_mask */
b34976b6 431 FALSE), /* pcrel_offset */
252b5132
RH
432
433 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
434 the symbol. */
435 HOWTO (R_PPC_GOT16_HA, /* type */
436 16, /* rightshift */
437 1, /* size (0 = byte, 1 = short, 2 = long) */
438 16, /* bitsize */
b34976b6 439 FALSE, /* pc_relative */
252b5132
RH
440 0, /* bitpos */
441 complain_overflow_bitfield, /* complain_on_overflow */
442 ppc_elf_addr16_ha_reloc, /* special_function */
443 "R_PPC_GOT16_HA", /* name */
b34976b6 444 FALSE, /* partial_inplace */
252b5132
RH
445 0, /* src_mask */
446 0xffff, /* dst_mask */
b34976b6 447 FALSE), /* pcrel_offset */
252b5132
RH
448
449 /* Like R_PPC_REL24, but referring to the procedure linkage table
450 entry for the symbol. */
451 HOWTO (R_PPC_PLTREL24, /* type */
452 0, /* rightshift */
453 2, /* size (0 = byte, 1 = short, 2 = long) */
454 26, /* bitsize */
b34976b6 455 TRUE, /* pc_relative */
252b5132
RH
456 0, /* bitpos */
457 complain_overflow_signed, /* complain_on_overflow */
458 bfd_elf_generic_reloc, /* special_function */
459 "R_PPC_PLTREL24", /* name */
b34976b6 460 FALSE, /* partial_inplace */
252b5132
RH
461 0, /* src_mask */
462 0x3fffffc, /* dst_mask */
b34976b6 463 TRUE), /* pcrel_offset */
252b5132
RH
464
465 /* This is used only by the dynamic linker. The symbol should exist
466 both in the object being run and in some shared library. The
467 dynamic linker copies the data addressed by the symbol from the
468 shared library into the object, because the object being
469 run has to have the data at some particular address. */
470 HOWTO (R_PPC_COPY, /* type */
471 0, /* rightshift */
472 2, /* size (0 = byte, 1 = short, 2 = long) */
473 32, /* bitsize */
b34976b6 474 FALSE, /* pc_relative */
252b5132
RH
475 0, /* bitpos */
476 complain_overflow_bitfield, /* complain_on_overflow */
477 bfd_elf_generic_reloc, /* special_function */
478 "R_PPC_COPY", /* name */
b34976b6 479 FALSE, /* partial_inplace */
252b5132
RH
480 0, /* src_mask */
481 0, /* dst_mask */
b34976b6 482 FALSE), /* pcrel_offset */
252b5132
RH
483
484 /* Like R_PPC_ADDR32, but used when setting global offset table
485 entries. */
486 HOWTO (R_PPC_GLOB_DAT, /* type */
487 0, /* rightshift */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
489 32, /* bitsize */
b34976b6 490 FALSE, /* pc_relative */
252b5132
RH
491 0, /* bitpos */
492 complain_overflow_bitfield, /* complain_on_overflow */
493 bfd_elf_generic_reloc, /* special_function */
494 "R_PPC_GLOB_DAT", /* name */
b34976b6 495 FALSE, /* partial_inplace */
252b5132
RH
496 0, /* src_mask */
497 0xffffffff, /* dst_mask */
b34976b6 498 FALSE), /* pcrel_offset */
252b5132
RH
499
500 /* Marks a procedure linkage table entry for a symbol. */
501 HOWTO (R_PPC_JMP_SLOT, /* type */
502 0, /* rightshift */
503 2, /* size (0 = byte, 1 = short, 2 = long) */
504 32, /* bitsize */
b34976b6 505 FALSE, /* pc_relative */
252b5132
RH
506 0, /* bitpos */
507 complain_overflow_bitfield, /* complain_on_overflow */
508 bfd_elf_generic_reloc, /* special_function */
509 "R_PPC_JMP_SLOT", /* name */
b34976b6 510 FALSE, /* partial_inplace */
252b5132
RH
511 0, /* src_mask */
512 0, /* dst_mask */
b34976b6 513 FALSE), /* pcrel_offset */
252b5132
RH
514
515 /* Used only by the dynamic linker. When the object is run, this
516 longword is set to the load address of the object, plus the
517 addend. */
518 HOWTO (R_PPC_RELATIVE, /* type */
519 0, /* rightshift */
520 2, /* size (0 = byte, 1 = short, 2 = long) */
521 32, /* bitsize */
b34976b6 522 FALSE, /* pc_relative */
252b5132
RH
523 0, /* bitpos */
524 complain_overflow_bitfield, /* complain_on_overflow */
525 bfd_elf_generic_reloc, /* special_function */
526 "R_PPC_RELATIVE", /* name */
b34976b6 527 FALSE, /* partial_inplace */
252b5132
RH
528 0, /* src_mask */
529 0xffffffff, /* dst_mask */
b34976b6 530 FALSE), /* pcrel_offset */
252b5132
RH
531
532 /* Like R_PPC_REL24, but uses the value of the symbol within the
533 object rather than the final value. Normally used for
534 _GLOBAL_OFFSET_TABLE_. */
535 HOWTO (R_PPC_LOCAL24PC, /* type */
536 0, /* rightshift */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
538 26, /* bitsize */
b34976b6 539 TRUE, /* pc_relative */
252b5132
RH
540 0, /* bitpos */
541 complain_overflow_signed, /* complain_on_overflow */
542 bfd_elf_generic_reloc, /* special_function */
543 "R_PPC_LOCAL24PC", /* name */
b34976b6 544 FALSE, /* partial_inplace */
252b5132
RH
545 0, /* src_mask */
546 0x3fffffc, /* dst_mask */
b34976b6 547 TRUE), /* pcrel_offset */
252b5132
RH
548
549 /* Like R_PPC_ADDR32, but may be unaligned. */
550 HOWTO (R_PPC_UADDR32, /* type */
551 0, /* rightshift */
552 2, /* size (0 = byte, 1 = short, 2 = long) */
553 32, /* bitsize */
b34976b6 554 FALSE, /* pc_relative */
252b5132
RH
555 0, /* bitpos */
556 complain_overflow_bitfield, /* complain_on_overflow */
557 bfd_elf_generic_reloc, /* special_function */
558 "R_PPC_UADDR32", /* name */
b34976b6 559 FALSE, /* partial_inplace */
252b5132
RH
560 0, /* src_mask */
561 0xffffffff, /* dst_mask */
b34976b6 562 FALSE), /* pcrel_offset */
252b5132
RH
563
564 /* Like R_PPC_ADDR16, but may be unaligned. */
565 HOWTO (R_PPC_UADDR16, /* type */
566 0, /* rightshift */
567 1, /* size (0 = byte, 1 = short, 2 = long) */
568 16, /* bitsize */
b34976b6 569 FALSE, /* pc_relative */
252b5132
RH
570 0, /* bitpos */
571 complain_overflow_bitfield, /* complain_on_overflow */
572 bfd_elf_generic_reloc, /* special_function */
573 "R_PPC_UADDR16", /* name */
b34976b6 574 FALSE, /* partial_inplace */
252b5132
RH
575 0, /* src_mask */
576 0xffff, /* dst_mask */
b34976b6 577 FALSE), /* pcrel_offset */
252b5132
RH
578
579 /* 32-bit PC relative */
580 HOWTO (R_PPC_REL32, /* type */
581 0, /* rightshift */
582 2, /* size (0 = byte, 1 = short, 2 = long) */
583 32, /* bitsize */
b34976b6 584 TRUE, /* pc_relative */
252b5132
RH
585 0, /* bitpos */
586 complain_overflow_bitfield, /* complain_on_overflow */
587 bfd_elf_generic_reloc, /* special_function */
588 "R_PPC_REL32", /* name */
b34976b6 589 FALSE, /* partial_inplace */
252b5132
RH
590 0, /* src_mask */
591 0xffffffff, /* dst_mask */
b34976b6 592 TRUE), /* pcrel_offset */
252b5132
RH
593
594 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 595 FIXME: not supported. */
252b5132
RH
596 HOWTO (R_PPC_PLT32, /* type */
597 0, /* rightshift */
598 2, /* size (0 = byte, 1 = short, 2 = long) */
599 32, /* bitsize */
b34976b6 600 FALSE, /* pc_relative */
252b5132
RH
601 0, /* bitpos */
602 complain_overflow_bitfield, /* complain_on_overflow */
603 bfd_elf_generic_reloc, /* special_function */
604 "R_PPC_PLT32", /* name */
b34976b6 605 FALSE, /* partial_inplace */
252b5132
RH
606 0, /* src_mask */
607 0, /* dst_mask */
b34976b6 608 FALSE), /* pcrel_offset */
252b5132
RH
609
610 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 611 FIXME: not supported. */
252b5132
RH
612 HOWTO (R_PPC_PLTREL32, /* type */
613 0, /* rightshift */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
615 32, /* bitsize */
b34976b6 616 TRUE, /* pc_relative */
252b5132
RH
617 0, /* bitpos */
618 complain_overflow_bitfield, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC_PLTREL32", /* name */
b34976b6 621 FALSE, /* partial_inplace */
252b5132
RH
622 0, /* src_mask */
623 0, /* dst_mask */
b34976b6 624 TRUE), /* pcrel_offset */
252b5132
RH
625
626 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
627 the symbol. */
628 HOWTO (R_PPC_PLT16_LO, /* type */
629 0, /* rightshift */
630 1, /* size (0 = byte, 1 = short, 2 = long) */
631 16, /* bitsize */
b34976b6 632 FALSE, /* pc_relative */
252b5132
RH
633 0, /* bitpos */
634 complain_overflow_dont, /* complain_on_overflow */
635 bfd_elf_generic_reloc, /* special_function */
636 "R_PPC_PLT16_LO", /* name */
b34976b6 637 FALSE, /* partial_inplace */
252b5132
RH
638 0, /* src_mask */
639 0xffff, /* dst_mask */
b34976b6 640 FALSE), /* pcrel_offset */
252b5132
RH
641
642 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
643 the symbol. */
644 HOWTO (R_PPC_PLT16_HI, /* type */
645 16, /* rightshift */
646 1, /* size (0 = byte, 1 = short, 2 = long) */
647 16, /* bitsize */
b34976b6 648 FALSE, /* pc_relative */
252b5132
RH
649 0, /* bitpos */
650 complain_overflow_bitfield, /* complain_on_overflow */
651 bfd_elf_generic_reloc, /* special_function */
652 "R_PPC_PLT16_HI", /* name */
b34976b6 653 FALSE, /* partial_inplace */
252b5132
RH
654 0, /* src_mask */
655 0xffff, /* dst_mask */
b34976b6 656 FALSE), /* pcrel_offset */
252b5132
RH
657
658 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
659 the symbol. */
660 HOWTO (R_PPC_PLT16_HA, /* type */
661 16, /* rightshift */
662 1, /* size (0 = byte, 1 = short, 2 = long) */
663 16, /* bitsize */
b34976b6 664 FALSE, /* pc_relative */
252b5132
RH
665 0, /* bitpos */
666 complain_overflow_bitfield, /* complain_on_overflow */
667 ppc_elf_addr16_ha_reloc, /* special_function */
668 "R_PPC_PLT16_HA", /* name */
b34976b6 669 FALSE, /* partial_inplace */
252b5132
RH
670 0, /* src_mask */
671 0xffff, /* dst_mask */
b34976b6 672 FALSE), /* pcrel_offset */
252b5132
RH
673
674 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
675 small data items. */
676 HOWTO (R_PPC_SDAREL16, /* type */
677 0, /* rightshift */
678 1, /* size (0 = byte, 1 = short, 2 = long) */
679 16, /* bitsize */
b34976b6 680 FALSE, /* pc_relative */
252b5132
RH
681 0, /* bitpos */
682 complain_overflow_signed, /* complain_on_overflow */
683 bfd_elf_generic_reloc, /* special_function */
684 "R_PPC_SDAREL16", /* name */
b34976b6 685 FALSE, /* partial_inplace */
252b5132
RH
686 0, /* src_mask */
687 0xffff, /* dst_mask */
b34976b6 688 FALSE), /* pcrel_offset */
252b5132 689
c061c2d8 690 /* 16-bit section relative relocation. */
252b5132
RH
691 HOWTO (R_PPC_SECTOFF, /* type */
692 0, /* rightshift */
c061c2d8
AM
693 1, /* size (0 = byte, 1 = short, 2 = long) */
694 16, /* bitsize */
b34976b6 695 FALSE, /* pc_relative */
252b5132
RH
696 0, /* bitpos */
697 complain_overflow_bitfield, /* complain_on_overflow */
698 bfd_elf_generic_reloc, /* special_function */
699 "R_PPC_SECTOFF", /* name */
b34976b6 700 FALSE, /* partial_inplace */
252b5132 701 0, /* src_mask */
c061c2d8 702 0xffff, /* dst_mask */
b34976b6 703 FALSE), /* pcrel_offset */
252b5132 704
c3668558 705 /* 16-bit lower half section relative relocation. */
252b5132
RH
706 HOWTO (R_PPC_SECTOFF_LO, /* type */
707 0, /* rightshift */
708 1, /* size (0 = byte, 1 = short, 2 = long) */
709 16, /* bitsize */
b34976b6 710 FALSE, /* pc_relative */
252b5132
RH
711 0, /* bitpos */
712 complain_overflow_dont, /* complain_on_overflow */
713 bfd_elf_generic_reloc, /* special_function */
714 "R_PPC_SECTOFF_LO", /* name */
b34976b6 715 FALSE, /* partial_inplace */
252b5132
RH
716 0, /* src_mask */
717 0xffff, /* dst_mask */
b34976b6 718 FALSE), /* pcrel_offset */
252b5132 719
c3668558 720 /* 16-bit upper half section relative relocation. */
252b5132
RH
721 HOWTO (R_PPC_SECTOFF_HI, /* type */
722 16, /* rightshift */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
724 16, /* bitsize */
b34976b6 725 FALSE, /* pc_relative */
252b5132
RH
726 0, /* bitpos */
727 complain_overflow_bitfield, /* complain_on_overflow */
728 bfd_elf_generic_reloc, /* special_function */
729 "R_PPC_SECTOFF_HI", /* name */
b34976b6 730 FALSE, /* partial_inplace */
252b5132
RH
731 0, /* src_mask */
732 0xffff, /* dst_mask */
b34976b6 733 FALSE), /* pcrel_offset */
252b5132 734
c3668558 735 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH
736 HOWTO (R_PPC_SECTOFF_HA, /* type */
737 16, /* rightshift */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
739 16, /* bitsize */
b34976b6 740 FALSE, /* pc_relative */
252b5132
RH
741 0, /* bitpos */
742 complain_overflow_bitfield, /* complain_on_overflow */
743 ppc_elf_addr16_ha_reloc, /* special_function */
744 "R_PPC_SECTOFF_HA", /* name */
b34976b6 745 FALSE, /* partial_inplace */
252b5132
RH
746 0, /* src_mask */
747 0xffff, /* dst_mask */
b34976b6 748 FALSE), /* pcrel_offset */
252b5132 749
7619e7c7
AM
750 /* Marker reloc for TLS. */
751 HOWTO (R_PPC_TLS,
252b5132
RH
752 0, /* rightshift */
753 2, /* size (0 = byte, 1 = short, 2 = long) */
754 32, /* bitsize */
b34976b6 755 FALSE, /* pc_relative */
252b5132 756 0, /* bitpos */
7619e7c7 757 complain_overflow_dont, /* complain_on_overflow */
252b5132 758 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM
759 "R_PPC_TLS", /* name */
760 FALSE, /* partial_inplace */
761 0, /* src_mask */
762 0, /* dst_mask */
763 FALSE), /* pcrel_offset */
764
765 /* Computes the load module index of the load module that contains the
766 definition of its TLS sym. */
767 HOWTO (R_PPC_DTPMOD32,
768 0, /* rightshift */
769 2, /* size (0 = byte, 1 = short, 2 = long) */
770 32, /* bitsize */
771 FALSE, /* pc_relative */
772 0, /* bitpos */
773 complain_overflow_dont, /* complain_on_overflow */
774 ppc_elf_unhandled_reloc, /* special_function */
775 "R_PPC_DTPMOD32", /* name */
b34976b6 776 FALSE, /* partial_inplace */
252b5132
RH
777 0, /* src_mask */
778 0xffffffff, /* dst_mask */
b34976b6 779 FALSE), /* pcrel_offset */
252b5132 780
7619e7c7
AM
781 /* Computes a dtv-relative displacement, the difference between the value
782 of sym+add and the base address of the thread-local storage block that
783 contains the definition of sym, minus 0x8000. */
784 HOWTO (R_PPC_DTPREL32,
785 0, /* rightshift */
786 2, /* size (0 = byte, 1 = short, 2 = long) */
787 32, /* bitsize */
788 FALSE, /* pc_relative */
789 0, /* bitpos */
790 complain_overflow_dont, /* complain_on_overflow */
791 ppc_elf_unhandled_reloc, /* special_function */
792 "R_PPC_DTPREL32", /* name */
793 FALSE, /* partial_inplace */
794 0, /* src_mask */
795 0xffffffff, /* dst_mask */
796 FALSE), /* pcrel_offset */
797
798 /* A 16 bit dtprel reloc. */
799 HOWTO (R_PPC_DTPREL16,
252b5132
RH
800 0, /* rightshift */
801 1, /* size (0 = byte, 1 = short, 2 = long) */
802 16, /* bitsize */
b34976b6 803 FALSE, /* pc_relative */
252b5132 804 0, /* bitpos */
7619e7c7
AM
805 complain_overflow_signed, /* complain_on_overflow */
806 ppc_elf_unhandled_reloc, /* special_function */
807 "R_PPC_DTPREL16", /* name */
b34976b6 808 FALSE, /* partial_inplace */
252b5132
RH
809 0, /* src_mask */
810 0xffff, /* dst_mask */
b34976b6 811 FALSE), /* pcrel_offset */
252b5132 812
7619e7c7
AM
813 /* Like DTPREL16, but no overflow. */
814 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH
815 0, /* rightshift */
816 1, /* size (0 = byte, 1 = short, 2 = long) */
817 16, /* bitsize */
b34976b6 818 FALSE, /* pc_relative */
252b5132 819 0, /* bitpos */
7619e7c7
AM
820 complain_overflow_dont, /* complain_on_overflow */
821 ppc_elf_unhandled_reloc, /* special_function */
822 "R_PPC_DTPREL16_LO", /* name */
b34976b6 823 FALSE, /* partial_inplace */
252b5132
RH
824 0, /* src_mask */
825 0xffff, /* dst_mask */
b34976b6 826 FALSE), /* pcrel_offset */
252b5132 827
7619e7c7
AM
828 /* Like DTPREL16_LO, but next higher group of 16 bits. */
829 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH
830 16, /* rightshift */
831 1, /* size (0 = byte, 1 = short, 2 = long) */
832 16, /* bitsize */
b34976b6 833 FALSE, /* pc_relative */
252b5132
RH
834 0, /* bitpos */
835 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
836 ppc_elf_unhandled_reloc, /* special_function */
837 "R_PPC_DTPREL16_HI", /* name */
b34976b6 838 FALSE, /* partial_inplace */
252b5132
RH
839 0, /* src_mask */
840 0xffff, /* dst_mask */
b34976b6 841 FALSE), /* pcrel_offset */
252b5132 842
7619e7c7
AM
843 /* Like DTPREL16_HI, but adjust for low 16 bits. */
844 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH
845 16, /* rightshift */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
847 16, /* bitsize */
b34976b6 848 FALSE, /* pc_relative */
252b5132
RH
849 0, /* bitpos */
850 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
851 ppc_elf_unhandled_reloc, /* special_function */
852 "R_PPC_DTPREL16_HA", /* name */
b34976b6 853 FALSE, /* partial_inplace */
252b5132
RH
854 0, /* src_mask */
855 0xffff, /* dst_mask */
b34976b6 856 FALSE), /* pcrel_offset */
252b5132 857
7619e7c7
AM
858 /* Computes a tp-relative displacement, the difference between the value of
859 sym+add and the value of the thread pointer (r13). */
860 HOWTO (R_PPC_TPREL32,
861 0, /* rightshift */
862 2, /* size (0 = byte, 1 = short, 2 = long) */
863 32, /* bitsize */
864 FALSE, /* pc_relative */
865 0, /* bitpos */
866 complain_overflow_dont, /* complain_on_overflow */
867 ppc_elf_unhandled_reloc, /* special_function */
868 "R_PPC_TPREL32", /* name */
869 FALSE, /* partial_inplace */
870 0, /* src_mask */
871 0xffffffff, /* dst_mask */
872 FALSE), /* pcrel_offset */
873
874 /* A 16 bit tprel reloc. */
875 HOWTO (R_PPC_TPREL16,
252b5132
RH
876 0, /* rightshift */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
878 16, /* bitsize */
b34976b6 879 FALSE, /* pc_relative */
252b5132 880 0, /* bitpos */
7619e7c7
AM
881 complain_overflow_signed, /* complain_on_overflow */
882 ppc_elf_unhandled_reloc, /* special_function */
883 "R_PPC_TPREL16", /* name */
b34976b6 884 FALSE, /* partial_inplace */
252b5132
RH
885 0, /* src_mask */
886 0xffff, /* dst_mask */
b34976b6 887 FALSE), /* pcrel_offset */
252b5132 888
7619e7c7
AM
889 /* Like TPREL16, but no overflow. */
890 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH
891 0, /* rightshift */
892 1, /* size (0 = byte, 1 = short, 2 = long) */
893 16, /* bitsize */
b34976b6 894 FALSE, /* pc_relative */
252b5132 895 0, /* bitpos */
7619e7c7
AM
896 complain_overflow_dont, /* complain_on_overflow */
897 ppc_elf_unhandled_reloc, /* special_function */
898 "R_PPC_TPREL16_LO", /* name */
b34976b6 899 FALSE, /* partial_inplace */
252b5132
RH
900 0, /* src_mask */
901 0xffff, /* dst_mask */
b34976b6 902 FALSE), /* pcrel_offset */
252b5132 903
7619e7c7
AM
904 /* Like TPREL16_LO, but next higher group of 16 bits. */
905 HOWTO (R_PPC_TPREL16_HI,
906 16, /* rightshift */
907 1, /* size (0 = byte, 1 = short, 2 = long) */
908 16, /* bitsize */
909 FALSE, /* pc_relative */
910 0, /* bitpos */
911 complain_overflow_dont, /* complain_on_overflow */
912 ppc_elf_unhandled_reloc, /* special_function */
913 "R_PPC_TPREL16_HI", /* name */
914 FALSE, /* partial_inplace */
915 0, /* src_mask */
916 0xffff, /* dst_mask */
917 FALSE), /* pcrel_offset */
918
919 /* Like TPREL16_HI, but adjust for low 16 bits. */
920 HOWTO (R_PPC_TPREL16_HA,
921 16, /* rightshift */
922 1, /* size (0 = byte, 1 = short, 2 = long) */
923 16, /* bitsize */
924 FALSE, /* pc_relative */
925 0, /* bitpos */
926 complain_overflow_dont, /* complain_on_overflow */
927 ppc_elf_unhandled_reloc, /* special_function */
928 "R_PPC_TPREL16_HA", /* name */
929 FALSE, /* partial_inplace */
930 0, /* src_mask */
931 0xffff, /* dst_mask */
932 FALSE), /* pcrel_offset */
933
934 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
935 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
936 to the first entry. */
937 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH
938 0, /* rightshift */
939 1, /* size (0 = byte, 1 = short, 2 = long) */
940 16, /* bitsize */
b34976b6 941 FALSE, /* pc_relative */
252b5132
RH
942 0, /* bitpos */
943 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
944 ppc_elf_unhandled_reloc, /* special_function */
945 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 946 FALSE, /* partial_inplace */
252b5132
RH
947 0, /* src_mask */
948 0xffff, /* dst_mask */
b34976b6 949 FALSE), /* pcrel_offset */
252b5132 950
7619e7c7
AM
951 /* Like GOT_TLSGD16, but no overflow. */
952 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 953 0, /* rightshift */
7619e7c7 954 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 955 16, /* bitsize */
b34976b6 956 FALSE, /* pc_relative */
252b5132 957 0, /* bitpos */
7619e7c7
AM
958 complain_overflow_dont, /* complain_on_overflow */
959 ppc_elf_unhandled_reloc, /* special_function */
960 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 961 FALSE, /* partial_inplace */
252b5132
RH
962 0, /* src_mask */
963 0xffff, /* dst_mask */
b34976b6 964 FALSE), /* pcrel_offset */
252b5132 965
7619e7c7
AM
966 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
967 HOWTO (R_PPC_GOT_TLSGD16_HI,
968 16, /* rightshift */
969 1, /* size (0 = byte, 1 = short, 2 = long) */
970 16, /* bitsize */
971 FALSE, /* pc_relative */
972 0, /* bitpos */
973 complain_overflow_dont, /* complain_on_overflow */
974 ppc_elf_unhandled_reloc, /* special_function */
975 "R_PPC_GOT_TLSGD16_HI", /* name */
976 FALSE, /* partial_inplace */
977 0, /* src_mask */
978 0xffff, /* dst_mask */
979 FALSE), /* pcrel_offset */
252b5132 980
7619e7c7
AM
981 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
982 HOWTO (R_PPC_GOT_TLSGD16_HA,
983 16, /* rightshift */
984 1, /* size (0 = byte, 1 = short, 2 = long) */
985 16, /* bitsize */
986 FALSE, /* pc_relative */
987 0, /* bitpos */
988 complain_overflow_dont, /* complain_on_overflow */
989 ppc_elf_unhandled_reloc, /* special_function */
990 "R_PPC_GOT_TLSGD16_HA", /* name */
991 FALSE, /* partial_inplace */
992 0, /* src_mask */
993 0xffff, /* dst_mask */
994 FALSE), /* pcrel_offset */
995
996 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
997 with values (sym+add)@dtpmod and zero, and computes the offset to the
998 first entry. */
999 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH
1000 0, /* rightshift */
1001 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 16, /* bitsize */
7619e7c7 1003 FALSE, /* pc_relative */
252b5132
RH
1004 0, /* bitpos */
1005 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1006 ppc_elf_unhandled_reloc, /* special_function */
1007 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1008 FALSE, /* partial_inplace */
252b5132
RH
1009 0, /* src_mask */
1010 0xffff, /* dst_mask */
b34976b6 1011 FALSE), /* pcrel_offset */
252b5132 1012
7619e7c7
AM
1013 /* Like GOT_TLSLD16, but no overflow. */
1014 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1015 0, /* rightshift */
7619e7c7
AM
1016 1, /* size (0 = byte, 1 = short, 2 = long) */
1017 16, /* bitsize */
b34976b6 1018 FALSE, /* pc_relative */
252b5132
RH
1019 0, /* bitpos */
1020 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1021 ppc_elf_unhandled_reloc, /* special_function */
1022 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1023 FALSE, /* partial_inplace */
252b5132 1024 0, /* src_mask */
7619e7c7 1025 0xffff, /* dst_mask */
b34976b6 1026 FALSE), /* pcrel_offset */
252b5132 1027
7619e7c7
AM
1028 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1029 HOWTO (R_PPC_GOT_TLSLD16_HI,
1030 16, /* rightshift */
1031 1, /* size (0 = byte, 1 = short, 2 = long) */
1032 16, /* bitsize */
b34976b6 1033 FALSE, /* pc_relative */
252b5132
RH
1034 0, /* bitpos */
1035 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1036 ppc_elf_unhandled_reloc, /* special_function */
1037 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1038 FALSE, /* partial_inplace */
252b5132 1039 0, /* src_mask */
7619e7c7 1040 0xffff, /* dst_mask */
b34976b6 1041 FALSE), /* pcrel_offset */
252b5132 1042
7619e7c7
AM
1043 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1044 HOWTO (R_PPC_GOT_TLSLD16_HA,
1045 16, /* rightshift */
1046 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 16, /* bitsize */
1048 FALSE, /* pc_relative */
1049 0, /* bitpos */
1050 complain_overflow_dont, /* complain_on_overflow */
1051 ppc_elf_unhandled_reloc, /* special_function */
1052 "R_PPC_GOT_TLSLD16_HA", /* name */
1053 FALSE, /* partial_inplace */
1054 0, /* src_mask */
1055 0xffff, /* dst_mask */
1056 FALSE), /* pcrel_offset */
1057
1058 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1059 the offset to the entry. */
1060 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH
1061 0, /* rightshift */
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 16, /* bitsize */
b34976b6 1064 FALSE, /* pc_relative */
252b5132
RH
1065 0, /* bitpos */
1066 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1067 ppc_elf_unhandled_reloc, /* special_function */
1068 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1069 FALSE, /* partial_inplace */
252b5132
RH
1070 0, /* src_mask */
1071 0xffff, /* dst_mask */
b34976b6 1072 FALSE), /* pcrel_offset */
252b5132 1073
7619e7c7
AM
1074 /* Like GOT_DTPREL16, but no overflow. */
1075 HOWTO (R_PPC_GOT_DTPREL16_LO,
1076 0, /* rightshift */
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 16, /* bitsize */
1079 FALSE, /* pc_relative */
1080 0, /* bitpos */
1081 complain_overflow_dont, /* complain_on_overflow */
1082 ppc_elf_unhandled_reloc, /* special_function */
1083 "R_PPC_GOT_DTPREL16_LO", /* name */
1084 FALSE, /* partial_inplace */
1085 0, /* src_mask */
1086 0xffff, /* dst_mask */
1087 FALSE), /* pcrel_offset */
252b5132 1088
7619e7c7
AM
1089 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1090 HOWTO (R_PPC_GOT_DTPREL16_HI,
1091 16, /* rightshift */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 16, /* bitsize */
1094 FALSE, /* pc_relative */
1095 0, /* bitpos */
1096 complain_overflow_dont, /* complain_on_overflow */
1097 ppc_elf_unhandled_reloc, /* special_function */
1098 "R_PPC_GOT_DTPREL16_HI", /* name */
1099 FALSE, /* partial_inplace */
1100 0, /* src_mask */
1101 0xffff, /* dst_mask */
1102 FALSE), /* pcrel_offset */
252b5132 1103
7619e7c7
AM
1104 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1105 HOWTO (R_PPC_GOT_DTPREL16_HA,
1106 16, /* rightshift */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 16, /* bitsize */
1109 FALSE, /* pc_relative */
1110 0, /* bitpos */
1111 complain_overflow_dont, /* complain_on_overflow */
1112 ppc_elf_unhandled_reloc, /* special_function */
1113 "R_PPC_GOT_DTPREL16_HA", /* name */
1114 FALSE, /* partial_inplace */
1115 0, /* src_mask */
1116 0xffff, /* dst_mask */
1117 FALSE), /* pcrel_offset */
c3668558 1118
7619e7c7
AM
1119 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1120 offset to the entry. */
1121 HOWTO (R_PPC_GOT_TPREL16,
1122 0, /* rightshift */
1123 1, /* size (0 = byte, 1 = short, 2 = long) */
1124 16, /* bitsize */
1125 FALSE, /* pc_relative */
1126 0, /* bitpos */
1127 complain_overflow_signed, /* complain_on_overflow */
1128 ppc_elf_unhandled_reloc, /* special_function */
1129 "R_PPC_GOT_TPREL16", /* name */
1130 FALSE, /* partial_inplace */
1131 0, /* src_mask */
1132 0xffff, /* dst_mask */
1133 FALSE), /* pcrel_offset */
1134
1135 /* Like GOT_TPREL16, but no overflow. */
1136 HOWTO (R_PPC_GOT_TPREL16_LO,
1137 0, /* rightshift */
1138 1, /* size (0 = byte, 1 = short, 2 = long) */
1139 16, /* bitsize */
1140 FALSE, /* pc_relative */
1141 0, /* bitpos */
1142 complain_overflow_dont, /* complain_on_overflow */
1143 ppc_elf_unhandled_reloc, /* special_function */
1144 "R_PPC_GOT_TPREL16_LO", /* name */
1145 FALSE, /* partial_inplace */
1146 0, /* src_mask */
1147 0xffff, /* dst_mask */
1148 FALSE), /* pcrel_offset */
1149
1150 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1151 HOWTO (R_PPC_GOT_TPREL16_HI,
1152 16, /* rightshift */
1153 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 16, /* bitsize */
1155 FALSE, /* pc_relative */
1156 0, /* bitpos */
1157 complain_overflow_dont, /* complain_on_overflow */
1158 ppc_elf_unhandled_reloc, /* special_function */
1159 "R_PPC_GOT_TPREL16_HI", /* name */
1160 FALSE, /* partial_inplace */
1161 0, /* src_mask */
1162 0xffff, /* dst_mask */
1163 FALSE), /* pcrel_offset */
1164
1165 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1166 HOWTO (R_PPC_GOT_TPREL16_HA,
1167 16, /* rightshift */
1168 1, /* size (0 = byte, 1 = short, 2 = long) */
1169 16, /* bitsize */
1170 FALSE, /* pc_relative */
1171 0, /* bitpos */
1172 complain_overflow_dont, /* complain_on_overflow */
1173 ppc_elf_unhandled_reloc, /* special_function */
1174 "R_PPC_GOT_TPREL16_HA", /* name */
1175 FALSE, /* partial_inplace */
1176 0, /* src_mask */
1177 0xffff, /* dst_mask */
1178 FALSE), /* pcrel_offset */
1179
1180 /* The remaining relocs are from the Embedded ELF ABI, and are not
1181 in the SVR4 ELF ABI. */
1182
1183 /* 32 bit value resulting from the addend minus the symbol. */
1184 HOWTO (R_PPC_EMB_NADDR32, /* type */
1185 0, /* rightshift */
1186 2, /* size (0 = byte, 1 = short, 2 = long) */
1187 32, /* bitsize */
1188 FALSE, /* pc_relative */
1189 0, /* bitpos */
1190 complain_overflow_bitfield, /* complain_on_overflow */
1191 bfd_elf_generic_reloc, /* special_function */
1192 "R_PPC_EMB_NADDR32", /* name */
1193 FALSE, /* partial_inplace */
1194 0, /* src_mask */
1195 0xffffffff, /* dst_mask */
1196 FALSE), /* pcrel_offset */
1197
1198 /* 16 bit value resulting from the addend minus the symbol. */
1199 HOWTO (R_PPC_EMB_NADDR16, /* type */
1200 0, /* rightshift */
1201 1, /* size (0 = byte, 1 = short, 2 = long) */
1202 16, /* bitsize */
1203 FALSE, /* pc_relative */
1204 0, /* bitpos */
1205 complain_overflow_bitfield, /* complain_on_overflow */
1206 bfd_elf_generic_reloc, /* special_function */
1207 "R_PPC_EMB_NADDR16", /* name */
1208 FALSE, /* partial_inplace */
1209 0, /* src_mask */
1210 0xffff, /* dst_mask */
1211 FALSE), /* pcrel_offset */
1212
1213 /* 16 bit value resulting from the addend minus the symbol. */
1214 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1215 0, /* rightshift */
1216 1, /* size (0 = byte, 1 = short, 2 = long) */
1217 16, /* bitsize */
1218 FALSE, /* pc_relative */
1219 0, /* bitpos */
1220 complain_overflow_dont,/* complain_on_overflow */
1221 bfd_elf_generic_reloc, /* special_function */
1222 "R_PPC_EMB_ADDR16_LO", /* name */
1223 FALSE, /* partial_inplace */
1224 0, /* src_mask */
1225 0xffff, /* dst_mask */
1226 FALSE), /* pcrel_offset */
1227
1228 /* The high order 16 bits of the addend minus the symbol. */
1229 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1230 16, /* rightshift */
1231 1, /* size (0 = byte, 1 = short, 2 = long) */
1232 16, /* bitsize */
1233 FALSE, /* pc_relative */
1234 0, /* bitpos */
1235 complain_overflow_dont, /* complain_on_overflow */
1236 bfd_elf_generic_reloc, /* special_function */
1237 "R_PPC_EMB_NADDR16_HI", /* name */
1238 FALSE, /* partial_inplace */
1239 0, /* src_mask */
1240 0xffff, /* dst_mask */
1241 FALSE), /* pcrel_offset */
1242
1243 /* The high order 16 bits of the result of the addend minus the address,
1244 plus 1 if the contents of the low 16 bits, treated as a signed number,
1245 is negative. */
1246 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1247 16, /* rightshift */
1248 1, /* size (0 = byte, 1 = short, 2 = long) */
1249 16, /* bitsize */
1250 FALSE, /* pc_relative */
1251 0, /* bitpos */
1252 complain_overflow_dont, /* complain_on_overflow */
25dbc73a
AM
1253 ppc_elf_addr16_ha_reloc, /* special_function */
1254 "R_PPC_EMB_NADDR16_HA", /* name */
1255 FALSE, /* partial_inplace */
1256 0, /* src_mask */
1257 0xffff, /* dst_mask */
1258 FALSE), /* pcrel_offset */
1259
1260 /* 16 bit value resulting from allocating a 4 byte word to hold an
1261 address in the .sdata section, and returning the offset from
1262 _SDA_BASE_ for that relocation. */
1263 HOWTO (R_PPC_EMB_SDAI16, /* type */
1264 0, /* rightshift */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1266 16, /* bitsize */
1267 FALSE, /* pc_relative */
1268 0, /* bitpos */
1269 complain_overflow_bitfield, /* complain_on_overflow */
1270 bfd_elf_generic_reloc, /* special_function */
1271 "R_PPC_EMB_SDAI16", /* name */
1272 FALSE, /* partial_inplace */
1273 0, /* src_mask */
1274 0xffff, /* dst_mask */
1275 FALSE), /* pcrel_offset */
1276
1277 /* 16 bit value resulting from allocating a 4 byte word to hold an
1278 address in the .sdata2 section, and returning the offset from
1279 _SDA2_BASE_ for that relocation. */
1280 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1281 0, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_bitfield, /* complain_on_overflow */
1287 bfd_elf_generic_reloc, /* special_function */
1288 "R_PPC_EMB_SDA2I16", /* name */
1289 FALSE, /* partial_inplace */
1290 0, /* src_mask */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1295 small data items. */
1296 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1297 0, /* rightshift */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1299 16, /* bitsize */
1300 FALSE, /* pc_relative */
1301 0, /* bitpos */
1302 complain_overflow_signed, /* complain_on_overflow */
1303 bfd_elf_generic_reloc, /* special_function */
1304 "R_PPC_EMB_SDA2REL", /* name */
1305 FALSE, /* partial_inplace */
1306 0, /* src_mask */
1307 0xffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1309
1310 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1311 signed offset from the appropriate base, and filling in the register
1312 field with the appropriate register (0, 2, or 13). */
1313 HOWTO (R_PPC_EMB_SDA21, /* type */
1314 0, /* rightshift */
1315 2, /* size (0 = byte, 1 = short, 2 = long) */
1316 16, /* bitsize */
1317 FALSE, /* pc_relative */
1318 0, /* bitpos */
1319 complain_overflow_signed, /* complain_on_overflow */
1320 bfd_elf_generic_reloc, /* special_function */
1321 "R_PPC_EMB_SDA21", /* name */
1322 FALSE, /* partial_inplace */
1323 0, /* src_mask */
1324 0xffff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1326
1327 /* Relocation not handled: R_PPC_EMB_MRKREF */
1328 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1329 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1330 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1331 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1332 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1333
1334 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1335 in the 16 bit signed offset from the appropriate base, and filling in the
1336 register field with the appropriate register (0, 2, or 13). */
1337 HOWTO (R_PPC_EMB_RELSDA, /* type */
1338 0, /* rightshift */
1339 1, /* size (0 = byte, 1 = short, 2 = long) */
1340 16, /* bitsize */
1341 TRUE, /* pc_relative */
1342 0, /* bitpos */
1343 complain_overflow_signed, /* complain_on_overflow */
1344 bfd_elf_generic_reloc, /* special_function */
1345 "R_PPC_EMB_RELSDA", /* name */
1346 FALSE, /* partial_inplace */
1347 0, /* src_mask */
1348 0xffff, /* dst_mask */
1349 FALSE), /* pcrel_offset */
1350
d7128ce4
AM
1351 /* A 16 bit relative relocation. */
1352 HOWTO (R_PPC_REL16, /* type */
1353 0, /* rightshift */
1354 1, /* size (0 = byte, 1 = short, 2 = long) */
1355 16, /* bitsize */
1356 TRUE, /* pc_relative */
1357 0, /* bitpos */
1358 complain_overflow_bitfield, /* complain_on_overflow */
1359 bfd_elf_generic_reloc, /* special_function */
1360 "R_PPC_REL16", /* name */
1361 FALSE, /* partial_inplace */
1362 0, /* src_mask */
1363 0xffff, /* dst_mask */
1364 TRUE), /* pcrel_offset */
1365
1366 /* A 16 bit relative relocation without overflow. */
1367 HOWTO (R_PPC_REL16_LO, /* type */
1368 0, /* rightshift */
1369 1, /* size (0 = byte, 1 = short, 2 = long) */
1370 16, /* bitsize */
1371 TRUE, /* pc_relative */
1372 0, /* bitpos */
1373 complain_overflow_dont,/* complain_on_overflow */
1374 bfd_elf_generic_reloc, /* special_function */
1375 "R_PPC_REL16_LO", /* name */
1376 FALSE, /* partial_inplace */
1377 0, /* src_mask */
1378 0xffff, /* dst_mask */
1379 TRUE), /* pcrel_offset */
1380
1381 /* The high order 16 bits of a relative address. */
1382 HOWTO (R_PPC_REL16_HI, /* type */
1383 16, /* rightshift */
1384 1, /* size (0 = byte, 1 = short, 2 = long) */
1385 16, /* bitsize */
1386 TRUE, /* pc_relative */
1387 0, /* bitpos */
1388 complain_overflow_dont, /* complain_on_overflow */
1389 bfd_elf_generic_reloc, /* special_function */
1390 "R_PPC_REL16_HI", /* name */
1391 FALSE, /* partial_inplace */
1392 0, /* src_mask */
1393 0xffff, /* dst_mask */
1394 TRUE), /* pcrel_offset */
1395
1396 /* The high order 16 bits of a relative address, plus 1 if the contents of
1397 the low 16 bits, treated as a signed number, is negative. */
1398 HOWTO (R_PPC_REL16_HA, /* type */
1399 16, /* rightshift */
1400 1, /* size (0 = byte, 1 = short, 2 = long) */
1401 16, /* bitsize */
1402 TRUE, /* pc_relative */
1403 0, /* bitpos */
1404 complain_overflow_dont, /* complain_on_overflow */
1405 ppc_elf_addr16_ha_reloc, /* special_function */
1406 "R_PPC_REL16_HA", /* name */
1407 FALSE, /* partial_inplace */
1408 0, /* src_mask */
1409 0xffff, /* dst_mask */
1410 TRUE), /* pcrel_offset */
1411
25dbc73a
AM
1412 /* GNU extension to record C++ vtable hierarchy. */
1413 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1414 0, /* rightshift */
1415 0, /* size (0 = byte, 1 = short, 2 = long) */
1416 0, /* bitsize */
1417 FALSE, /* pc_relative */
1418 0, /* bitpos */
1419 complain_overflow_dont, /* complain_on_overflow */
1420 NULL, /* special_function */
1421 "R_PPC_GNU_VTINHERIT", /* name */
1422 FALSE, /* partial_inplace */
1423 0, /* src_mask */
1424 0, /* dst_mask */
1425 FALSE), /* pcrel_offset */
1426
1427 /* GNU extension to record C++ vtable member usage. */
1428 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1429 0, /* rightshift */
1430 0, /* size (0 = byte, 1 = short, 2 = long) */
1431 0, /* bitsize */
1432 FALSE, /* pc_relative */
1433 0, /* bitpos */
1434 complain_overflow_dont, /* complain_on_overflow */
1435 NULL, /* special_function */
1436 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM
1437 FALSE, /* partial_inplace */
1438 0, /* src_mask */
25dbc73a 1439 0, /* dst_mask */
7619e7c7
AM
1440 FALSE), /* pcrel_offset */
1441
25dbc73a
AM
1442 /* Phony reloc to handle AIX style TOC entries. */
1443 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM
1444 0, /* rightshift */
1445 1, /* size (0 = byte, 1 = short, 2 = long) */
1446 16, /* bitsize */
1447 FALSE, /* pc_relative */
1448 0, /* bitpos */
25dbc73a 1449 complain_overflow_signed, /* complain_on_overflow */
7619e7c7 1450 bfd_elf_generic_reloc, /* special_function */
25dbc73a 1451 "R_PPC_TOC16", /* name */
7619e7c7
AM
1452 FALSE, /* partial_inplace */
1453 0, /* src_mask */
1454 0xffff, /* dst_mask */
1455 FALSE), /* pcrel_offset */
25dbc73a
AM
1456};
1457\f
1458/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1459
1460static void
1461ppc_elf_howto_init (void)
1462{
1463 unsigned int i, type;
1464
1465 for (i = 0;
1466 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1467 i++)
1468 {
1469 type = ppc_elf_howto_raw[i].type;
1470 if (type >= (sizeof (ppc_elf_howto_table)
1471 / sizeof (ppc_elf_howto_table[0])))
1472 abort ();
1473 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1474 }
1475}
1476
1477static reloc_howto_type *
1478ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1479 bfd_reloc_code_real_type code)
1480{
1481 enum elf_ppc_reloc_type r;
1482
1483 /* Initialize howto table if not already done. */
1484 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1485 ppc_elf_howto_init ();
1486
1487 switch (code)
1488 {
1489 default:
1490 return NULL;
1491
1492 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1493 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1494 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1495 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1496 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1497 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1498 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1499 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1500 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1501 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1502 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1503 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1504 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1505 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1506 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1507 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1508 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1509 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1510 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1511 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1512 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1513 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1514 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1515 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1516 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1517 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1518 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1519 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1520 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1521 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1522 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1523 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1524 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1525 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1526 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1527 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1528 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1529 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1530 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1531 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1532 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1533 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1534 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1535 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1536 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1537 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1538 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1539 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1540 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1541 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1542 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1543 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1544 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1545 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1546 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1547 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1548 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1549 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1550 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1551 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1552 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1553 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1554 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1555 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1556 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1557 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1558 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1559 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1560 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1561 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1562 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1563 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1564 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1565 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1566 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1567 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1568 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1569 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1570 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
d7128ce4
AM
1571 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1572 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1573 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1574 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
25dbc73a
AM
1575 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1576 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1577 }
1578
1579 return ppc_elf_howto_table[r];
1580};
1581
157090f7
AM
1582static reloc_howto_type *
1583ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1584 const char *r_name)
1585{
1586 unsigned int i;
1587
1588 for (i = 0;
1589 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1590 i++)
1591 if (ppc_elf_howto_raw[i].name != NULL
1592 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1593 return &ppc_elf_howto_raw[i];
1594
1595 return NULL;
1596}
1597
25dbc73a
AM
1598/* Set the howto pointer for a PowerPC ELF reloc. */
1599
1600static void
1601ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1602 arelent *cache_ptr,
1603 Elf_Internal_Rela *dst)
1604{
1605 /* Initialize howto table if not already done. */
1606 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1607 ppc_elf_howto_init ();
1608
1609 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1610 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
375de94a
AM
1611
1612 /* Just because the above assert didn't trigger doesn't mean that
1613 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1614 if (!cache_ptr->howto)
1615 {
1616 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1617 abfd, ELF32_R_TYPE (dst->r_info));
1618 bfd_set_error (bfd_error_bad_value);
1619
1620 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1621 }
25dbc73a
AM
1622}
1623
d7128ce4 1624/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM
1625
1626static bfd_reloc_status_type
1627ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1628 arelent *reloc_entry,
1629 asymbol *symbol,
1630 void *data ATTRIBUTE_UNUSED,
1631 asection *input_section,
1632 bfd *output_bfd,
1633 char **error_message ATTRIBUTE_UNUSED)
1634{
1635 bfd_vma relocation;
1636
1637 if (output_bfd != NULL)
1638 {
1639 reloc_entry->address += input_section->output_offset;
1640 return bfd_reloc_ok;
1641 }
1642
1643 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1644 return bfd_reloc_outofrange;
1645
1646 if (bfd_is_com_section (symbol->section))
1647 relocation = 0;
1648 else
1649 relocation = symbol->value;
1650
1651 relocation += symbol->section->output_section->vma;
1652 relocation += symbol->section->output_offset;
1653 relocation += reloc_entry->addend;
d7128ce4
AM
1654 if (reloc_entry->howto->pc_relative)
1655 relocation -= reloc_entry->address;
25dbc73a
AM
1656
1657 reloc_entry->addend += (relocation & 0x8000) << 1;
1658
1659 return bfd_reloc_continue;
1660}
1661
1662static bfd_reloc_status_type
1663ppc_elf_unhandled_reloc (bfd *abfd,
1664 arelent *reloc_entry,
1665 asymbol *symbol,
1666 void *data,
1667 asection *input_section,
1668 bfd *output_bfd,
1669 char **error_message)
1670{
1671 /* If this is a relocatable link (output_bfd test tells us), just
1672 call the generic function. Any adjustment will be done at final
1673 link time. */
1674 if (output_bfd != NULL)
1675 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1676 input_section, output_bfd, error_message);
1677
1678 if (error_message != NULL)
1679 {
1680 static char buf[60];
1681 sprintf (buf, _("generic linker can't handle %s"),
1682 reloc_entry->howto->name);
1683 *error_message = buf;
1684 }
1685 return bfd_reloc_dangerous;
1686}
1687\f
1688/* Sections created by the linker. */
1689
1690typedef struct elf_linker_section
1691{
c9a2f333 1692 /* Pointer to the bfd section. */
25dbc73a 1693 asection *section;
c9a2f333
AM
1694 /* Section name. */
1695 const char *name;
1696 /* Associated bss section name. */
1697 const char *bss_name;
1698 /* Associated symbol name. */
1699 const char *sym_name;
046183de
AM
1700 /* Associated symbol. */
1701 struct elf_link_hash_entry *sym;
25dbc73a
AM
1702} elf_linker_section_t;
1703
1704/* Linked list of allocated pointer entries. This hangs off of the
1705 symbol lists, and provides allows us to return different pointers,
1706 based on different addend's. */
1707
1708typedef struct elf_linker_section_pointers
1709{
1710 /* next allocated pointer for this symbol */
1711 struct elf_linker_section_pointers *next;
1712 /* offset of pointer from beginning of section */
1713 bfd_vma offset;
1714 /* addend used */
1715 bfd_vma addend;
1716 /* which linker section this is */
1717 elf_linker_section_t *lsect;
25dbc73a
AM
1718} elf_linker_section_pointers_t;
1719
1720struct ppc_elf_obj_tdata
1721{
1722 struct elf_obj_tdata elf;
1723
1724 /* A mapping from local symbols to offsets into the various linker
1725 sections added. This is index by the symbol index. */
1726 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM
1727
1728 /* Flags used to auto-detect plt type. */
1729 unsigned int makes_plt_call : 1;
1730 unsigned int has_rel16 : 1;
25dbc73a
AM
1731};
1732
1733#define ppc_elf_tdata(bfd) \
1734 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 1735
25dbc73a
AM
1736#define elf_local_ptr_offsets(bfd) \
1737 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 1738
0c8d6e5c
AM
1739#define is_ppc_elf(bfd) \
1740 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1741 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1742
25dbc73a 1743/* Override the generic function because we store some extras. */
7619e7c7 1744
25dbc73a
AM
1745static bfd_boolean
1746ppc_elf_mkobject (bfd *abfd)
1747{
0ffa91dd
NC
1748 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1749 PPC32_ELF_TDATA);
25dbc73a 1750}
7619e7c7 1751
25dbc73a
AM
1752/* Fix bad default arch selected for a 32 bit input bfd when the
1753 default is 64 bit. */
7619e7c7 1754
25dbc73a
AM
1755static bfd_boolean
1756ppc_elf_object_p (bfd *abfd)
1757{
1758 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1759 {
1760 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 1761
25dbc73a
AM
1762 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1763 {
1764 /* Relies on arch after 64 bit default being 32 bit default. */
1765 abfd->arch_info = abfd->arch_info->next;
1766 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1767 }
1768 }
1769 return TRUE;
1770}
7619e7c7 1771
25dbc73a 1772/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 1773
25dbc73a
AM
1774static bfd_boolean
1775ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1776{
1777 BFD_ASSERT (!elf_flags_init (abfd)
1778 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 1779
25dbc73a
AM
1780 elf_elfheader (abfd)->e_flags = flags;
1781 elf_flags_init (abfd) = TRUE;
1782 return TRUE;
1783}
1784
25dbc73a 1785/* Support for core dump NOTE sections. */
deaaf2f3 1786
b34976b6 1787static bfd_boolean
25dbc73a 1788ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 1789{
25dbc73a
AM
1790 int offset;
1791 unsigned int size;
252b5132 1792
25dbc73a
AM
1793 switch (note->descsz)
1794 {
1795 default:
1796 return FALSE;
252b5132 1797
25dbc73a
AM
1798 case 268: /* Linux/PPC. */
1799 /* pr_cursig */
1800 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 1801
25dbc73a
AM
1802 /* pr_pid */
1803 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 1804
25dbc73a
AM
1805 /* pr_reg */
1806 offset = 72;
1807 size = 192;
deaaf2f3 1808
25dbc73a
AM
1809 break;
1810 }
deaaf2f3 1811
25dbc73a
AM
1812 /* Make a ".reg/999" section. */
1813 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1814 size, note->descpos + offset);
1815}
252b5132 1816
25dbc73a
AM
1817static bfd_boolean
1818ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1819{
1820 switch (note->descsz)
deaaf2f3 1821 {
25dbc73a
AM
1822 default:
1823 return FALSE;
deaaf2f3 1824
25dbc73a
AM
1825 case 128: /* Linux/PPC elf_prpsinfo. */
1826 elf_tdata (abfd)->core_program
1827 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1828 elf_tdata (abfd)->core_command
1829 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1830 }
9abc968f 1831
25dbc73a
AM
1832 /* Note that for some reason, a spurious space is tacked
1833 onto the end of the args in some (at least one anyway)
1834 implementations, so strip it off if it exists. */
70bccea4 1835
25dbc73a
AM
1836 {
1837 char *command = elf_tdata (abfd)->core_command;
1838 int n = strlen (command);
70bccea4 1839
25dbc73a
AM
1840 if (0 < n && command[n - 1] == ' ')
1841 command[n - 1] = '\0';
1842 }
deaaf2f3 1843
25dbc73a
AM
1844 return TRUE;
1845}
deaaf2f3 1846
183e98be
AM
1847static char *
1848ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1849{
1850 switch (note_type)
1851 {
1852 default:
1853 return NULL;
1854
1855 case NT_PRPSINFO:
1856 {
1857 char data[128];
1858 va_list ap;
1859
1860 va_start (ap, note_type);
1861 memset (data, 0, 32);
1862 strncpy (data + 32, va_arg (ap, const char *), 16);
1863 strncpy (data + 48, va_arg (ap, const char *), 80);
1864 va_end (ap);
1865 return elfcore_write_note (abfd, buf, bufsiz,
1866 "CORE", note_type, data, sizeof (data));
1867 }
1868
1869 case NT_PRSTATUS:
1870 {
1871 char data[268];
1872 va_list ap;
1873 long pid;
1874 int cursig;
1875 const void *greg;
1876
1877 va_start (ap, note_type);
1878 memset (data, 0, 72);
1879 pid = va_arg (ap, long);
1880 bfd_put_32 (abfd, pid, data + 24);
1881 cursig = va_arg (ap, int);
1882 bfd_put_16 (abfd, cursig, data + 12);
1883 greg = va_arg (ap, const void *);
1884 memcpy (data + 72, greg, 192);
1885 memset (data + 264, 0, 4);
1886 va_end (ap);
1887 return elfcore_write_note (abfd, buf, bufsiz,
1888 "CORE", note_type, data, sizeof (data));
1889 }
1890 }
1891}
1892
25dbc73a
AM
1893/* Return address for Ith PLT stub in section PLT, for relocation REL
1894 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 1895
25dbc73a
AM
1896static bfd_vma
1897ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1898 const asection *plt ATTRIBUTE_UNUSED,
1899 const arelent *rel)
1900{
1901 return rel->address;
1902}
deaaf2f3 1903
25dbc73a 1904/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
1905 is called when bfd_section_from_shdr finds a section with an unknown
1906 type. */
deaaf2f3 1907
25dbc73a 1908static bfd_boolean
6dc132d9
L
1909ppc_elf_section_from_shdr (bfd *abfd,
1910 Elf_Internal_Shdr *hdr,
1911 const char *name,
1912 int shindex)
25dbc73a
AM
1913{
1914 asection *newsect;
1915 flagword flags;
d1c6de6f 1916
6dc132d9 1917 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 1918 return FALSE;
deaaf2f3 1919
25dbc73a
AM
1920 newsect = hdr->bfd_section;
1921 flags = bfd_get_section_flags (abfd, newsect);
1922 if (hdr->sh_flags & SHF_EXCLUDE)
1923 flags |= SEC_EXCLUDE;
9abc968f 1924
25dbc73a
AM
1925 if (hdr->sh_type == SHT_ORDERED)
1926 flags |= SEC_SORT_ENTRIES;
d1c6de6f 1927
25dbc73a
AM
1928 bfd_set_section_flags (abfd, newsect, flags);
1929 return TRUE;
1930}
1931
1932/* Set up any other section flags and such that may be necessary. */
1933
1934static bfd_boolean
1935ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1936 Elf_Internal_Shdr *shdr,
1937 asection *asect)
1938{
d30e8e7c 1939 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
25dbc73a
AM
1940 shdr->sh_flags |= SHF_EXCLUDE;
1941
1942 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1943 shdr->sh_type = SHT_ORDERED;
1944
1945 return TRUE;
1946}
1947
1948/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1949 need to bump up the number of section headers. */
1950
1951static int
a6b96beb
AM
1952ppc_elf_additional_program_headers (bfd *abfd,
1953 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM
1954{
1955 asection *s;
1956 int ret = 0;
d1c6de6f 1957
25dbc73a
AM
1958 s = bfd_get_section_by_name (abfd, ".sbss2");
1959 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1960 ++ret;
d1c6de6f 1961
25dbc73a
AM
1962 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1963 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1964 ++ret;
deaaf2f3 1965
25dbc73a
AM
1966 return ret;
1967}
deaaf2f3 1968
25dbc73a
AM
1969/* Add extra PPC sections -- Note, for now, make .sbss2 and
1970 .PPC.EMB.sbss0 a normal section, and not a bss section so
1971 that the linker doesn't crater when trying to make more than
1972 2 sections. */
e656e369 1973
b35d266b 1974static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 1975{
0112cd26
NC
1976 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1977 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1978 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1979 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1980 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1981 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1982 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
1983 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1984 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1985 { NULL, 0, 0, 0, 0 }
7f4d3958
L
1986};
1987
551b43fd
AM
1988/* This is what we want for new plt/got. */
1989static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 1990 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM
1991
1992static const struct bfd_elf_special_section *
1993ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 1994{
b35d266b 1995 const struct bfd_elf_special_section *ssect;
551b43fd
AM
1996
1997 /* See if this is one of the special sections. */
1998 if (sec->name == NULL)
1999 return NULL;
2000
2001 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2002 sec->use_rela_p);
2003 if (ssect != NULL)
2004 {
2005 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2006 ssect = &ppc_alt_plt;
2007 return ssect;
2008 }
2009
2010 return _bfd_elf_get_sec_type_attr (abfd, sec);
2011}
25dbc73a
AM
2012\f
2013/* Very simple linked list structure for recording apuinfo values. */
2014typedef struct apuinfo_list
2015{
2016 struct apuinfo_list *next;
2017 unsigned long value;
2018}
2019apuinfo_list;
e656e369 2020
25dbc73a 2021static apuinfo_list *head;
deaaf2f3 2022
deaaf2f3 2023
25dbc73a
AM
2024static void
2025apuinfo_list_init (void)
2026{
2027 head = NULL;
2028}
9abc968f 2029
25dbc73a
AM
2030static void
2031apuinfo_list_add (unsigned long value)
2032{
2033 apuinfo_list *entry = head;
deaaf2f3 2034
25dbc73a
AM
2035 while (entry != NULL)
2036 {
2037 if (entry->value == value)
2038 return;
2039 entry = entry->next;
2040 }
b4a38de6 2041
25dbc73a
AM
2042 entry = bfd_malloc (sizeof (* entry));
2043 if (entry == NULL)
2044 return;
e656e369 2045
25dbc73a
AM
2046 entry->value = value;
2047 entry->next = head;
2048 head = entry;
2049}
9abc968f 2050
25dbc73a
AM
2051static unsigned
2052apuinfo_list_length (void)
2053{
2054 apuinfo_list *entry;
2055 unsigned long count;
9abc968f 2056
25dbc73a
AM
2057 for (entry = head, count = 0;
2058 entry;
2059 entry = entry->next)
2060 ++ count;
e656e369 2061
25dbc73a
AM
2062 return count;
2063}
eea6121a 2064
25dbc73a
AM
2065static inline unsigned long
2066apuinfo_list_element (unsigned long number)
2067{
2068 apuinfo_list * entry;
e656e369 2069
25dbc73a
AM
2070 for (entry = head;
2071 entry && number --;
2072 entry = entry->next)
2073 ;
252b5132 2074
25dbc73a
AM
2075 return entry ? entry->value : 0;
2076}
2077
2078static void
2079apuinfo_list_finish (void)
2080{
2081 apuinfo_list *entry;
2082
2083 for (entry = head; entry;)
252b5132 2084 {
25dbc73a
AM
2085 apuinfo_list *next = entry->next;
2086 free (entry);
2087 entry = next;
2088 }
9abc968f 2089
25dbc73a
AM
2090 head = NULL;
2091}
9abc968f 2092
25dbc73a
AM
2093#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2094#define APUINFO_LABEL "APUinfo"
9abc968f 2095
25dbc73a
AM
2096/* Scan the input BFDs and create a linked list of
2097 the APUinfo values that will need to be emitted. */
9abc968f 2098
25dbc73a
AM
2099static void
2100ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2101{
2102 bfd *ibfd;
2103 asection *asec;
2104 char *buffer;
2105 unsigned num_input_sections;
2106 bfd_size_type output_section_size;
2107 unsigned i;
2108 unsigned num_entries;
2109 unsigned long offset;
2110 unsigned long length;
2111 const char *error_message = NULL;
9abc968f 2112
25dbc73a
AM
2113 if (link_info == NULL)
2114 return;
9abc968f 2115
25dbc73a
AM
2116 /* Scan the input bfds, looking for apuinfo sections. */
2117 num_input_sections = 0;
2118 output_section_size = 0;
252b5132 2119
25dbc73a 2120 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2121 {
25dbc73a
AM
2122 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2123 if (asec)
252b5132 2124 {
25dbc73a
AM
2125 ++ num_input_sections;
2126 output_section_size += asec->size;
252b5132 2127 }
252b5132
RH
2128 }
2129
25dbc73a
AM
2130 /* We need at least one input sections
2131 in order to make merging worthwhile. */
2132 if (num_input_sections < 1)
2133 return;
deaaf2f3 2134
25dbc73a
AM
2135 /* Just make sure that the output section exists as well. */
2136 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2137 if (asec == NULL)
2138 return;
252b5132 2139
25dbc73a
AM
2140 /* Allocate a buffer for the contents of the input sections. */
2141 buffer = bfd_malloc (output_section_size);
2142 if (buffer == NULL)
2143 return;
252b5132 2144
25dbc73a
AM
2145 offset = 0;
2146 apuinfo_list_init ();
252b5132 2147
25dbc73a
AM
2148 /* Read in the input sections contents. */
2149 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2150 {
25dbc73a
AM
2151 unsigned long datum;
2152 char *ptr;
252b5132 2153
25dbc73a
AM
2154 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2155 if (asec == NULL)
2156 continue;
252b5132 2157
25dbc73a
AM
2158 length = asec->size;
2159 if (length < 24)
2160 {
2161 error_message = _("corrupt or empty %s section in %B");
2162 goto fail;
2163 }
252b5132 2164
25dbc73a
AM
2165 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2166 || (bfd_bread (buffer + offset, length, ibfd) != length))
2167 {
2168 error_message = _("unable to read in %s section from %B");
2169 goto fail;
2170 }
252b5132 2171
25dbc73a
AM
2172 /* Process the contents of the section. */
2173 ptr = buffer + offset;
2174 error_message = _("corrupt %s section in %B");
252b5132 2175
25dbc73a
AM
2176 /* Verify the contents of the header. Note - we have to
2177 extract the values this way in order to allow for a
2178 host whose endian-ness is different from the target. */
2179 datum = bfd_get_32 (ibfd, ptr);
2180 if (datum != sizeof APUINFO_LABEL)
2181 goto fail;
252b5132 2182
25dbc73a
AM
2183 datum = bfd_get_32 (ibfd, ptr + 8);
2184 if (datum != 0x2)
2185 goto fail;
252b5132 2186
25dbc73a
AM
2187 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2188 goto fail;
252b5132 2189
25dbc73a
AM
2190 /* Get the number of bytes used for apuinfo entries. */
2191 datum = bfd_get_32 (ibfd, ptr + 4);
2192 if (datum + 20 != length)
2193 goto fail;
2194
2195 /* Make sure that we do not run off the end of the section. */
2196 if (offset + length > output_section_size)
2197 goto fail;
2198
2199 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2200 for (i = 0; i < datum; i += 4)
2201 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2202
2203 /* Update the offset. */
2204 offset += length;
252b5132
RH
2205 }
2206
25dbc73a 2207 error_message = NULL;
252b5132 2208
25dbc73a
AM
2209 /* Compute the size of the output section. */
2210 num_entries = apuinfo_list_length ();
2211 output_section_size = 20 + num_entries * 4;
252b5132 2212
25dbc73a
AM
2213 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2214
2215 if (! bfd_set_section_size (abfd, asec, output_section_size))
2216 ibfd = abfd,
2217 error_message = _("warning: unable to set size of %s section in %B");
2218
2219 fail:
2220 free (buffer);
2221
2222 if (error_message)
2223 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2224}
252b5132 2225
25dbc73a
AM
2226/* Prevent the output section from accumulating the input sections'
2227 contents. We have already stored this in our linked list structure. */
252b5132 2228
25dbc73a
AM
2229static bfd_boolean
2230ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2231 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM
2232 asection *asec,
2233 bfd_byte *contents ATTRIBUTE_UNUSED)
2234{
2235 return (apuinfo_list_length ()
2236 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
252b5132
RH
2237}
2238
25dbc73a
AM
2239/* Finally we can generate the output section. */
2240
2241static void
2242ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2243{
25dbc73a
AM
2244 bfd_byte *buffer;
2245 asection *asec;
2246 unsigned i;
2247 unsigned num_entries;
2248 bfd_size_type length;
7619e7c7 2249
25dbc73a
AM
2250 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2251 if (asec == NULL)
2252 return;
2253
2254 if (apuinfo_list_length () == 0)
2255 return;
2256
2257 length = asec->size;
2258 if (length < 20)
2259 return;
2260
2261 buffer = bfd_malloc (length);
2262 if (buffer == NULL)
7619e7c7 2263 {
25dbc73a
AM
2264 (*_bfd_error_handler)
2265 (_("failed to allocate space for new APUinfo section."));
2266 return;
7619e7c7 2267 }
7619e7c7 2268
25dbc73a
AM
2269 /* Create the apuinfo header. */
2270 num_entries = apuinfo_list_length ();
2271 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2272 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2273 bfd_put_32 (abfd, 0x2, buffer + 8);
2274 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2275
25dbc73a
AM
2276 length = 20;
2277 for (i = 0; i < num_entries; i++)
feee612b 2278 {
25dbc73a
AM
2279 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2280 length += 4;
feee612b 2281 }
feee612b 2282
25dbc73a
AM
2283 if (length != asec->size)
2284 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2285
25dbc73a
AM
2286 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2287 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2288
25dbc73a
AM
2289 free (buffer);
2290
2291 apuinfo_list_finish ();
252b5132 2292}
25dbc73a 2293\f
468392fb
AM
2294static bfd_boolean
2295section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2296{
2297 bfd_vma vma = *(bfd_vma *) ptr;
2298 return ((section->flags & SEC_ALLOC) != 0
2299 && section->vma <= vma
2300 && vma < section->vma + section->size);
2301}
2302
2303static long
2304ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2305 long dynsymcount, asymbol **dynsyms,
2306 asymbol **ret)
2307{
2308 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2309 asection *plt, *relplt, *dynamic, *glink;
2310 bfd_vma glink_vma = 0;
2311 bfd_vma resolv_vma = 0;
2312 bfd_vma stub_vma;
2313 asymbol *s;
2314 arelent *p;
2315 long count, i;
2316 size_t size;
2317 char *names;
2318 bfd_byte buf[4];
2319
2320 *ret = NULL;
2321
2322 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2323 return 0;
2324
2325 if (dynsymcount <= 0)
2326 return 0;
2327
2328 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2329 if (relplt == NULL)
2330 return 0;
2331
2332 plt = bfd_get_section_by_name (abfd, ".plt");
2333 if (plt == NULL)
2334 return 0;
2335
2336 /* Call common code to handle old-style executable PLTs. */
2337 if (elf_section_flags (plt) & SHF_EXECINSTR)
2338 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2339 dynsymcount, dynsyms, ret);
2340
2341 /* If this object was prelinked, the prelinker stored the address
2342 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2343 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2344 if (dynamic != NULL)
2345 {
2346 bfd_byte *dynbuf, *extdyn, *extdynend;
2347 size_t extdynsize;
2348 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2349
2350 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2351 return -1;
2352
2353 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2354 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2355
2356 extdyn = dynbuf;
2357 extdynend = extdyn + dynamic->size;
2358 for (; extdyn < extdynend; extdyn += extdynsize)
2359 {
2360 Elf_Internal_Dyn dyn;
2361 (*swap_dyn_in) (abfd, extdyn, &dyn);
2362
2363 if (dyn.d_tag == DT_NULL)
2364 break;
2365
2366 if (dyn.d_tag == DT_PPC_GOT)
2367 {
2368 unsigned int g_o_t = dyn.d_un.d_val;
2369 asection *got = bfd_get_section_by_name (abfd, ".got");
2370 if (got != NULL
2371 && bfd_get_section_contents (abfd, got, buf,
2372 g_o_t - got->vma + 4, 4))
2373 glink_vma = bfd_get_32 (abfd, buf);
2374 break;
2375 }
2376 }
2377 free (dynbuf);
2378 }
2379
2380 /* Otherwise we read the first plt entry. */
2381 if (glink_vma == 0)
2382 {
2383 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2384 glink_vma = bfd_get_32 (abfd, buf);
2385 }
2386
2387 if (glink_vma == 0)
2388 return 0;
2389
2390 /* The .glink section usually does not survive the final
2391 link; search for the section (usually .text) where the
2392 glink stubs now reside. */
2393 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2394 if (glink == NULL)
2395 return 0;
2396
2397 /* Determine glink PLT resolver by reading the relative branch
2398 from the first glink stub. */
2399 if (bfd_get_section_contents (abfd, glink, buf,
2400 glink_vma - glink->vma, 4))
2401 {
2402 unsigned int insn = bfd_get_32 (abfd, buf);
2403
2404 /* The first glink stub may either branch to the resolver ... */
2405 insn ^= B;
2406 if ((insn & ~0x3fffffc) == 0)
2407 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2408
2409 /* ... or fall through a bunch of NOPs. */
2410 else if ((insn ^ B ^ NOP) == 0)
2411 for (i = 4;
2412 bfd_get_section_contents (abfd, glink, buf,
2413 glink_vma - glink->vma + i, 4);
2414 i += 4)
2415 if (bfd_get_32 (abfd, buf) != NOP)
2416 {
2417 resolv_vma = glink_vma + i;
2418 break;
2419 }
2420 }
2421
2422 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2423 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2424 return -1;
2425
2426 count = relplt->size / sizeof (Elf32_External_Rela);
2427 stub_vma = glink_vma - (bfd_vma) count * 16;
2428 size = count * sizeof (asymbol);
2429 p = relplt->relocation;
2430 for (i = 0; i < count; i++, p++)
2431 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2432
2433 size += sizeof (asymbol) + sizeof ("__glink");
2434
2435 if (resolv_vma)
2436 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2437
2438 s = *ret = bfd_malloc (size);
2439 if (s == NULL)
2440 return -1;
2441
2442 names = (char *) (s + count + 1 + (resolv_vma != 0));
2443 p = relplt->relocation;
2444 for (i = 0; i < count; i++, p++)
2445 {
2446 size_t len;
2447
2448 *s = **p->sym_ptr_ptr;
2449 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2450 we are defining a symbol, ensure one of them is set. */
2451 if ((s->flags & BSF_LOCAL) == 0)
2452 s->flags |= BSF_GLOBAL;
2453 s->section = glink;
2454 s->value = stub_vma - glink->vma;
2455 s->name = names;
2456 s->udata.p = NULL;
2457 len = strlen ((*p->sym_ptr_ptr)->name);
2458 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2459 names += len;
2460 memcpy (names, "@plt", sizeof ("@plt"));
2461 names += sizeof ("@plt");
2462 ++s;
2463 stub_vma += 16;
2464 }
2465
2466 /* Add a symbol at the start of the glink branch table. */
2467 memset (s, sizeof *s, 0);
2468 s->the_bfd = abfd;
2469 s->flags = BSF_GLOBAL;
2470 s->section = glink;
2471 s->value = glink_vma - glink->vma;
2472 s->name = names;
2473 memcpy (names, "__glink", sizeof ("__glink"));
2474 names += sizeof ("__glink");
2475 s++;
2476 count++;
2477
2478 if (resolv_vma)
2479 {
2480 /* Add a symbol for the glink PLT resolver. */
2481 memset (s, sizeof *s, 0);
2482 s->the_bfd = abfd;
2483 s->flags = BSF_GLOBAL;
2484 s->section = glink;
2485 s->value = resolv_vma - glink->vma;
2486 s->name = names;
2487 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2488 names += sizeof ("__glink_PLTresolve");
2489 s++;
2490 count++;
2491 }
2492
2493 return count;
2494}
2495\f
25dbc73a
AM
2496/* The following functions are specific to the ELF linker, while
2497 functions above are used generally. They appear in this file more
2498 or less in the order in which they are called. eg.
2499 ppc_elf_check_relocs is called early in the link process,
2500 ppc_elf_finish_dynamic_sections is one of the last functions
2501 called. */
252b5132 2502
25dbc73a
AM
2503/* The PPC linker needs to keep track of the number of relocs that it
2504 decides to copy as dynamic relocs in check_relocs for each symbol.
2505 This is so that it can later discard them if they are found to be
2506 unnecessary. We store the information in a field extending the
2507 regular ELF linker hash table. */
ae9a127f 2508
25dbc73a 2509struct ppc_elf_dyn_relocs
252b5132 2510{
25dbc73a 2511 struct ppc_elf_dyn_relocs *next;
252b5132 2512
25dbc73a
AM
2513 /* The input section of the reloc. */
2514 asection *sec;
252b5132 2515
25dbc73a
AM
2516 /* Total number of relocs copied for the input section. */
2517 bfd_size_type count;
252b5132 2518
25dbc73a
AM
2519 /* Number of pc-relative relocs copied for the input section. */
2520 bfd_size_type pc_count;
2521};
252b5132 2522
a6aa5195
AM
2523/* Track PLT entries needed for a given symbol. We might need more
2524 than one glink entry per symbol. */
2525struct plt_entry
2526{
2527 struct plt_entry *next;
2528
2529 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2530 This field stores the offset into .got2 used to initialise the
2531 GOT pointer reg. It will always be at least 32768 (and for
2532 current gcc this is the only offset used). */
2533 bfd_vma addend;
2534
2535 /* The .got2 section. */
2536 asection *sec;
2537
2538 /* PLT refcount or offset. */
2539 union
2540 {
2541 bfd_signed_vma refcount;
2542 bfd_vma offset;
2543 } plt;
2544
2545 /* .glink stub offset. */
2546 bfd_vma glink_offset;
2547};
2548
1d483afe 2549/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM
2550 selects those that must be copied when linking a shared library,
2551 even when the symbol is local. */
252b5132 2552
1d483afe
AM
2553static int
2554must_be_dyn_reloc (struct bfd_link_info *info,
2555 enum elf_ppc_reloc_type r_type)
2556{
2557 switch (r_type)
2558 {
2559 default:
2560 return 1;
2561
2562 case R_PPC_REL24:
2563 case R_PPC_REL14:
2564 case R_PPC_REL14_BRTAKEN:
2565 case R_PPC_REL14_BRNTAKEN:
2566 case R_PPC_REL32:
2567 return 0;
2568
2569 case R_PPC_TPREL32:
2570 case R_PPC_TPREL16:
2571 case R_PPC_TPREL16_LO:
2572 case R_PPC_TPREL16_HI:
2573 case R_PPC_TPREL16_HA:
2574 return !info->executable;
2575 }
2576}
252b5132 2577
25dbc73a
AM
2578/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2579 copying dynamic variables from a shared lib into an app's dynbss
2580 section, and instead use a dynamic relocation to point into the
2581 shared lib. */
2582#define ELIMINATE_COPY_RELOCS 1
252b5132 2583
25dbc73a 2584/* PPC ELF linker hash entry. */
252b5132 2585
25dbc73a
AM
2586struct ppc_elf_link_hash_entry
2587{
2588 struct elf_link_hash_entry elf;
252b5132 2589
25dbc73a
AM
2590 /* If this symbol is used in the linker created sections, the processor
2591 specific backend uses this field to map the field into the offset
2592 from the beginning of the section. */
2593 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 2594
25dbc73a
AM
2595 /* Track dynamic relocs copied for this symbol. */
2596 struct ppc_elf_dyn_relocs *dyn_relocs;
252b5132 2597
25dbc73a
AM
2598 /* Contexts in which symbol is used in the GOT (or TOC).
2599 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2600 corresponding relocs are encountered during check_relocs.
2601 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2602 indicate the corresponding GOT entry type is not needed. */
2603#define TLS_GD 1 /* GD reloc. */
2604#define TLS_LD 2 /* LD reloc. */
2605#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2606#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2607#define TLS_TLS 16 /* Any TLS reloc. */
2608#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2609 char tls_mask;
4dc4a9a5
DJ
2610
2611 /* Nonzero if we have seen a small data relocation referring to this
2612 symbol. */
2613 unsigned char has_sda_refs;
25dbc73a 2614};
252b5132 2615
25dbc73a
AM
2616#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2617
2618/* PPC ELF linker hash table. */
2619
2620struct ppc_elf_link_hash_table
2621{
2622 struct elf_link_hash_table elf;
2623
2624 /* Short-cuts to get to dynamic linker sections. */
2625 asection *got;
2626 asection *relgot;
d7128ce4 2627 asection *glink;
25dbc73a
AM
2628 asection *plt;
2629 asection *relplt;
2630 asection *dynbss;
2631 asection *relbss;
2632 asection *dynsbss;
2633 asection *relsbss;
c9a2f333 2634 elf_linker_section_t sdata[2];
25dbc73a
AM
2635 asection *sbss;
2636
016687f8
AM
2637 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2638 asection *srelplt2;
2639
2640 /* The .got.plt section (VxWorks only)*/
2641 asection *sgotplt;
2642
1d483afe 2643 /* Shortcut to __tls_get_addr. */
25dbc73a 2644 struct elf_link_hash_entry *tls_get_addr;
252b5132 2645
016687f8
AM
2646 /* The bfd that forced an old-style PLT. */
2647 bfd *old_bfd;
2648
25dbc73a
AM
2649 /* TLS local dynamic got entry handling. */
2650 union {
2651 bfd_signed_vma refcount;
2652 bfd_vma offset;
2653 } tlsld_got;
252b5132 2654
d7128ce4
AM
2655 /* Offset of PltResolve function in glink. */
2656 bfd_vma glink_pltresolve;
2657
3b36f7e6
AM
2658 /* Size of reserved GOT entries. */
2659 unsigned int got_header_size;
2660 /* Non-zero if allocating the header left a gap. */
2661 unsigned int got_gap;
2662
4a3dc543
RS
2663 /* The type of PLT we have chosen to use. */
2664 enum ppc_elf_plt_type plt_type;
2665
0ba07910
AM
2666 /* Set if we should emit symbols for stubs. */
2667 unsigned int emit_stub_syms:1;
2668
9d8504b1 2669 /* True if the target system is VxWorks. */
016687f8 2670 unsigned int is_vxworks:1;
9d8504b1
PB
2671
2672 /* The size of PLT entries. */
2673 int plt_entry_size;
2674 /* The distance between adjacent PLT slots. */
2675 int plt_slot_size;
2676 /* The size of the first PLT entry. */
2677 int plt_initial_entry_size;
016687f8
AM
2678
2679 /* Small local sym to section mapping cache. */
2680 struct sym_sec_cache sym_sec;
25dbc73a 2681};
252b5132 2682
25dbc73a 2683/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 2684
25dbc73a
AM
2685#define ppc_elf_hash_table(p) \
2686 ((struct ppc_elf_link_hash_table *) (p)->hash)
252b5132 2687
25dbc73a 2688/* Create an entry in a PPC ELF linker hash table. */
252b5132 2689
25dbc73a
AM
2690static struct bfd_hash_entry *
2691ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2692 struct bfd_hash_table *table,
2693 const char *string)
252b5132 2694{
25dbc73a
AM
2695 /* Allocate the structure if it has not already been allocated by a
2696 subclass. */
2697 if (entry == NULL)
2698 {
2699 entry = bfd_hash_allocate (table,
2700 sizeof (struct ppc_elf_link_hash_entry));
2701 if (entry == NULL)
2702 return entry;
2703 }
252b5132 2704
25dbc73a
AM
2705 /* Call the allocation method of the superclass. */
2706 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2707 if (entry != NULL)
2708 {
2709 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2710 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2711 ppc_elf_hash_entry (entry)->tls_mask = 0;
2712 }
252b5132 2713
25dbc73a 2714 return entry;
252b5132 2715}
3dab13f6 2716
25dbc73a 2717/* Create a PPC ELF linker hash table. */
3dab13f6 2718
25dbc73a
AM
2719static struct bfd_link_hash_table *
2720ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 2721{
25dbc73a 2722 struct ppc_elf_link_hash_table *ret;
3dab13f6 2723
25dbc73a
AM
2724 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2725 if (ret == NULL)
2726 return NULL;
3dab13f6 2727
66eb6687
AM
2728 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2729 ppc_elf_link_hash_newfunc,
2730 sizeof (struct ppc_elf_link_hash_entry)))
3dab13f6 2731 {
25dbc73a
AM
2732 free (ret);
2733 return NULL;
2734 }
58111eb7 2735
a6aa5195
AM
2736 ret->elf.init_plt_refcount.refcount = 0;
2737 ret->elf.init_plt_refcount.glist = NULL;
2738 ret->elf.init_plt_offset.offset = 0;
2739 ret->elf.init_plt_offset.glist = NULL;
2740
c9a2f333
AM
2741 ret->sdata[0].name = ".sdata";
2742 ret->sdata[0].sym_name = "_SDA_BASE_";
2743 ret->sdata[0].bss_name = ".sbss";
2744
2745 ret->sdata[1].name = ".sdata2";
2746 ret->sdata[1].sym_name = "_SDA2_BASE_";
2747 ret->sdata[1].bss_name = ".sbss2";
2748
9d8504b1
PB
2749 ret->plt_entry_size = 12;
2750 ret->plt_slot_size = 8;
2751 ret->plt_initial_entry_size = 72;
9d8504b1 2752
25dbc73a
AM
2753 return &ret->elf.root;
2754}
3dab13f6 2755
9d8504b1 2756/* Create .got and the related sections. */
3dab13f6 2757
25dbc73a
AM
2758static bfd_boolean
2759ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2760{
2761 struct ppc_elf_link_hash_table *htab;
2762 asection *s;
2763 flagword flags;
3dab13f6 2764
25dbc73a
AM
2765 if (!_bfd_elf_create_got_section (abfd, info))
2766 return FALSE;
3dab13f6 2767
25dbc73a
AM
2768 htab = ppc_elf_hash_table (info);
2769 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2770 if (s == NULL)
2771 abort ();
3dab13f6 2772
9d8504b1
PB
2773 if (htab->is_vxworks)
2774 {
2775 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2776 if (!htab->sgotplt)
2777 abort ();
2778 }
2779 else
2780 {
2781 /* The powerpc .got has a blrl instruction in it. Mark it
2782 executable. */
2783 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2784 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2785 if (!bfd_set_section_flags (abfd, s, flags))
2786 return FALSE;
2787 }
3dab13f6 2788
3b36f7e6
AM
2789 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2790 | SEC_LINKER_CREATED | SEC_READONLY);
2791 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
25dbc73a 2792 if (!htab->relgot
25dbc73a
AM
2793 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2794 return FALSE;
3dab13f6 2795
25dbc73a
AM
2796 return TRUE;
2797}
3dab13f6 2798
25dbc73a
AM
2799/* We have to create .dynsbss and .rela.sbss here so that they get mapped
2800 to output sections (just like _bfd_elf_create_dynamic_sections has
2801 to create .dynbss and .rela.bss). */
3dab13f6 2802
25dbc73a
AM
2803static bfd_boolean
2804ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2805{
2806 struct ppc_elf_link_hash_table *htab;
2807 asection *s;
2808 flagword flags;
3dab13f6 2809
25dbc73a 2810 htab = ppc_elf_hash_table (info);
3dab13f6 2811
25dbc73a
AM
2812 if (htab->got == NULL
2813 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
2814 return FALSE;
2815
25dbc73a
AM
2816 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2817 return FALSE;
3dab13f6 2818
d7128ce4
AM
2819 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2820 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2821
2822 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2823 htab->glink = s;
2824 if (s == NULL
2825 || !bfd_set_section_alignment (abfd, s, 4))
2826 return FALSE;
3dab13f6 2827
25dbc73a 2828 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
3b36f7e6
AM
2829 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2830 SEC_ALLOC | SEC_LINKER_CREATED);
2831 htab->dynsbss = s;
3496cb2a 2832 if (s == NULL)
25dbc73a 2833 return FALSE;
3dab13f6 2834
25dbc73a
AM
2835 if (! info->shared)
2836 {
2837 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
d7128ce4 2838 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 2839 htab->relsbss = s;
25dbc73a 2840 if (s == NULL
25dbc73a
AM
2841 || ! bfd_set_section_alignment (abfd, s, 2))
2842 return FALSE;
2843 }
3dab13f6 2844
711de32c
RS
2845 if (htab->is_vxworks
2846 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2847 return FALSE;
9d8504b1 2848
25dbc73a
AM
2849 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2850 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2851 if (s == NULL)
2852 abort ();
3dab13f6 2853
3b36f7e6 2854 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
2855 if (htab->plt_type == PLT_VXWORKS)
2856 /* The VxWorks PLT is a loaded section with contents. */
2857 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
2858 return bfd_set_section_flags (abfd, s, flags);
2859}
3dab13f6 2860
25dbc73a 2861/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 2862
25dbc73a 2863static void
fcfa13d2 2864ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
2865 struct elf_link_hash_entry *dir,
2866 struct elf_link_hash_entry *ind)
2867{
2868 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 2869
25dbc73a
AM
2870 edir = (struct ppc_elf_link_hash_entry *) dir;
2871 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 2872
25dbc73a
AM
2873 if (eind->dyn_relocs != NULL)
2874 {
2875 if (edir->dyn_relocs != NULL)
3dab13f6 2876 {
25dbc73a
AM
2877 struct ppc_elf_dyn_relocs **pp;
2878 struct ppc_elf_dyn_relocs *p;
3dab13f6 2879
fcfa13d2 2880 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
2881 list. Merge any entries against the same section. */
2882 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 2883 {
25dbc73a
AM
2884 struct ppc_elf_dyn_relocs *q;
2885
2886 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2887 if (q->sec == p->sec)
2888 {
2889 q->pc_count += p->pc_count;
2890 q->count += p->count;
2891 *pp = p->next;
2892 break;
2893 }
2894 if (q == NULL)
2895 pp = &p->next;
3dab13f6 2896 }
25dbc73a 2897 *pp = edir->dyn_relocs;
3dab13f6 2898 }
25dbc73a
AM
2899
2900 edir->dyn_relocs = eind->dyn_relocs;
2901 eind->dyn_relocs = NULL;
3dab13f6 2902 }
3dab13f6 2903
25dbc73a 2904 edir->tls_mask |= eind->tls_mask;
4dc4a9a5 2905 edir->has_sda_refs |= eind->has_sda_refs;
3dab13f6 2906
a6aa5195
AM
2907 /* If called to transfer flags for a weakdef during processing
2908 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2909 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2910 if (!(ELIMINATE_COPY_RELOCS
2911 && eind->elf.root.type != bfd_link_hash_indirect
2912 && edir->elf.dynamic_adjusted))
2913 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2914
2915 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2916 edir->elf.ref_regular |= eind->elf.ref_regular;
2917 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2918 edir->elf.needs_plt |= eind->elf.needs_plt;
0eb4a168 2919 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
a6aa5195
AM
2920
2921 /* If we were called to copy over info for a weak sym, that's all. */
2922 if (eind->elf.root.type != bfd_link_hash_indirect)
2923 return;
2924
2925 /* Copy over the GOT refcount entries that we may have already seen to
2926 the symbol which just became indirect. */
fcfa13d2
AM
2927 edir->elf.got.refcount += eind->elf.got.refcount;
2928 eind->elf.got.refcount = 0;
a6aa5195
AM
2929
2930 /* And plt entries. */
2931 if (eind->elf.plt.plist != NULL)
2932 {
2933 if (edir->elf.plt.plist != NULL)
2934 {
2935 struct plt_entry **entp;
2936 struct plt_entry *ent;
2937
2938 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2939 {
2940 struct plt_entry *dent;
2941
2942 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2943 if (dent->sec == ent->sec && dent->addend == ent->addend)
2944 {
2945 dent->plt.refcount += ent->plt.refcount;
2946 *entp = ent->next;
2947 break;
2948 }
2949 if (dent == NULL)
2950 entp = &ent->next;
2951 }
2952 *entp = edir->elf.plt.plist;
2953 }
2954
2955 edir->elf.plt.plist = eind->elf.plt.plist;
2956 eind->elf.plt.plist = NULL;
2957 }
2958
fcfa13d2 2959 if (eind->elf.dynindx != -1)
25dbc73a 2960 {
fcfa13d2
AM
2961 if (edir->elf.dynindx != -1)
2962 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2963 edir->elf.dynstr_index);
a6aa5195
AM
2964 edir->elf.dynindx = eind->elf.dynindx;
2965 edir->elf.dynstr_index = eind->elf.dynstr_index;
2966 eind->elf.dynindx = -1;
2967 eind->elf.dynstr_index = 0;
25dbc73a 2968 }
25dbc73a 2969}
3dab13f6 2970
25dbc73a
AM
2971/* Hook called by the linker routine which adds symbols from an object
2972 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 2973
25dbc73a
AM
2974static bfd_boolean
2975ppc_elf_add_symbol_hook (bfd *abfd,
2976 struct bfd_link_info *info,
2977 Elf_Internal_Sym *sym,
2978 const char **namep ATTRIBUTE_UNUSED,
2979 flagword *flagsp ATTRIBUTE_UNUSED,
2980 asection **secp,
2981 bfd_vma *valp)
2982{
2983 if (sym->st_shndx == SHN_COMMON
2984 && !info->relocatable
0c8d6e5c
AM
2985 && is_ppc_elf (info->output_bfd)
2986 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
2987 {
2988 /* Common symbols less than or equal to -G nn bytes are automatically
2989 put into .sbss. */
2990 struct ppc_elf_link_hash_table *htab;
3dab13f6 2991
25dbc73a
AM
2992 htab = ppc_elf_hash_table (info);
2993 if (htab->sbss == NULL)
2994 {
644285ef 2995 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 2996
644285ef
AM
2997 if (!htab->elf.dynobj)
2998 htab->elf.dynobj = abfd;
2999
3496cb2a
L
3000 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3001 ".sbss",
3002 flags);
3003 if (htab->sbss == NULL)
25dbc73a 3004 return FALSE;
3dab13f6 3005 }
3dab13f6 3006
25dbc73a
AM
3007 *secp = htab->sbss;
3008 *valp = sym->st_size;
3009 }
3dab13f6 3010
25dbc73a 3011 return TRUE;
3dab13f6
AM
3012}
3013\f
046183de
AM
3014static bfd_boolean
3015create_sdata_sym (struct ppc_elf_link_hash_table *htab,
3016 elf_linker_section_t *lsect)
3017{
3018 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3019 TRUE, FALSE, TRUE);
3020 if (lsect->sym == NULL)
3021 return FALSE;
3022 if (lsect->sym->root.type == bfd_link_hash_new)
3023 lsect->sym->non_elf = 0;
3024 lsect->sym->ref_regular = 1;
3025 return TRUE;
3026}
3027
c9a2f333 3028/* Create a special linker section. */
25dbc73a 3029
c9a2f333 3030static bfd_boolean
55fd94b0
AM
3031ppc_elf_create_linker_section (bfd *abfd,
3032 struct bfd_link_info *info,
c9a2f333
AM
3033 flagword flags,
3034 elf_linker_section_t *lsect)
252b5132 3035{
58111eb7 3036 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 3037 asection *s;
58111eb7 3038
c9a2f333
AM
3039 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3040 | SEC_LINKER_CREATED);
58111eb7
AM
3041
3042 /* Record the first bfd that needs the special sections. */
3043 if (!htab->elf.dynobj)
3044 htab->elf.dynobj = abfd;
3045
3496cb2a
L
3046 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3047 lsect->name,
3048 flags);
76750a2f 3049 if (s == NULL
76750a2f 3050 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 3051 return FALSE;
76750a2f 3052 lsect->section = s;
58111eb7 3053
046183de 3054 return create_sdata_sym (htab, lsect);
252b5132 3055}
252b5132 3056
25dbc73a
AM
3057/* Find a linker generated pointer with a given addend and type. */
3058
3059static elf_linker_section_pointers_t *
3060elf_find_pointer_linker_section
3061 (elf_linker_section_pointers_t *linker_pointers,
3062 bfd_vma addend,
3063 elf_linker_section_t *lsect)
252b5132 3064{
25dbc73a
AM
3065 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3066 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3067 return linker_pointers;
252b5132 3068
25dbc73a
AM
3069 return NULL;
3070}
3071
3072/* Allocate a pointer to live in a linker created section. */
3073
3074static bfd_boolean
3075elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM
3076 elf_linker_section_t *lsect,
3077 struct elf_link_hash_entry *h,
3078 const Elf_Internal_Rela *rel)
3079{
3080 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3081 elf_linker_section_pointers_t *linker_section_ptr;
3082 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3083 bfd_size_type amt;
3084
3085 BFD_ASSERT (lsect != NULL);
3086
3087 /* Is this a global symbol? */
3088 if (h != NULL)
3089 {
3090 struct ppc_elf_link_hash_entry *eh;
3091
3092 /* Has this symbol already been allocated? If so, our work is done. */
3093 eh = (struct ppc_elf_link_hash_entry *) h;
3094 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3095 rel->r_addend,
3096 lsect))
3097 return TRUE;
3098
3099 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3100 }
3101 else
3102 {
0c8d6e5c 3103 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3104
25dbc73a
AM
3105 /* Allocation of a pointer to a local symbol. */
3106 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3107
3108 /* Allocate a table to hold the local symbols if first time. */
3109 if (!ptr)
3110 {
0ffa91dd 3111 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3112
3113 amt = num_symbols;
3114 amt *= sizeof (elf_linker_section_pointers_t *);
3115 ptr = bfd_zalloc (abfd, amt);
3116
3117 if (!ptr)
3118 return FALSE;
3119
3120 elf_local_ptr_offsets (abfd) = ptr;
3121 }
3122
3123 /* Has this symbol already been allocated? If so, our work is done. */
3124 if (elf_find_pointer_linker_section (ptr[r_symndx],
3125 rel->r_addend,
3126 lsect))
3127 return TRUE;
252b5132 3128
25dbc73a 3129 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3130 }
41fcb14e 3131
25dbc73a
AM
3132 /* Allocate space for a pointer in the linker section, and allocate
3133 a new pointer record from internal memory. */
3134 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3135 amt = sizeof (elf_linker_section_pointers_t);
3136 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3137
25dbc73a 3138 if (!linker_section_ptr)
7619e7c7 3139 return FALSE;
41fcb14e 3140
25dbc73a
AM
3141 linker_section_ptr->next = *ptr_linker_section_ptr;
3142 linker_section_ptr->addend = rel->r_addend;
3143 linker_section_ptr->lsect = lsect;
25dbc73a 3144 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3145
25dbc73a
AM
3146 linker_section_ptr->offset = lsect->section->size;
3147 lsect->section->size += 4;
7619e7c7 3148
25dbc73a
AM
3149#ifdef DEBUG
3150 fprintf (stderr,
3151 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3152 lsect->name, (long) linker_section_ptr->offset,
3153 (long) lsect->section->size);
3154#endif
7619e7c7
AM
3155
3156 return TRUE;
41fcb14e
AM
3157}
3158
b34976b6 3159static bfd_boolean
25dbc73a
AM
3160update_local_sym_info (bfd *abfd,
3161 Elf_Internal_Shdr *symtab_hdr,
3162 unsigned long r_symndx,
3163 int tls_type)
252b5132 3164{
25dbc73a
AM
3165 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3166 char *local_got_tls_masks;
252b5132 3167
25dbc73a 3168 if (local_got_refcounts == NULL)
252b5132 3169 {
25dbc73a
AM
3170 bfd_size_type size = symtab_hdr->sh_info;
3171
3172 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
3173 local_got_refcounts = bfd_zalloc (abfd, size);
3174 if (local_got_refcounts == NULL)
b34976b6 3175 return FALSE;
25dbc73a 3176 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3177 }
41fcb14e 3178
25dbc73a
AM
3179 local_got_refcounts[r_symndx] += 1;
3180 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
3181 local_got_tls_masks[r_symndx] |= tls_type;
3182 return TRUE;
3183}
41fcb14e 3184
a6aa5195
AM
3185static bfd_boolean
3186update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
3187 asection *sec, bfd_vma addend)
3188{
3189 struct plt_entry *ent;
3190
3191 if (addend < 32768)
3192 sec = NULL;
3193 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3194 if (ent->sec == sec && ent->addend == addend)
3195 break;
3196 if (ent == NULL)
3197 {
3198 bfd_size_type amt = sizeof (*ent);
3199 ent = bfd_alloc (abfd, amt);
3200 if (ent == NULL)
3201 return FALSE;
3202 ent->next = h->plt.plist;
3203 ent->sec = sec;
3204 ent->addend = addend;
3205 ent->plt.refcount = 0;
3206 h->plt.plist = ent;
3207 }
3208 ent->plt.refcount += 1;
3209 return TRUE;
3210}
3211
3212static struct plt_entry *
3213find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
3214{
3215 struct plt_entry *ent;
3216
3217 if (addend < 32768)
3218 sec = NULL;
3219 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3220 if (ent->sec == sec && ent->addend == addend)
3221 break;
3222 return ent;
3223}
3224
25dbc73a
AM
3225static void
3226bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3227{
3228 (*_bfd_error_handler)
3229 (_("%B: relocation %s cannot be used when making a shared object"),
3230 abfd,
3231 ppc_elf_howto_table[r_type]->name);
3232 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3233}
3234
25dbc73a
AM
3235/* Look through the relocs for a section during the first phase, and
3236 allocate space in the global offset table or procedure linkage
3237 table. */
252b5132 3238
b34976b6 3239static bfd_boolean
25dbc73a
AM
3240ppc_elf_check_relocs (bfd *abfd,
3241 struct bfd_link_info *info,
3242 asection *sec,
3243 const Elf_Internal_Rela *relocs)
252b5132 3244{
7619e7c7 3245 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3246 Elf_Internal_Shdr *symtab_hdr;
3247 struct elf_link_hash_entry **sym_hashes;
3248 const Elf_Internal_Rela *rel;
3249 const Elf_Internal_Rela *rel_end;
a6aa5195 3250 asection *got2, *sreloc;
25dbc73a
AM
3251
3252 if (info->relocatable)
3253 return TRUE;
252b5132 3254
c87b5a93
AM
3255 /* Don't do anything special with non-loaded, non-alloced sections.
3256 In particular, any relocs in such sections should not affect GOT
3257 and PLT reference counting (ie. we don't allow them to create GOT
3258 or PLT entries), there's no possibility or desire to optimize TLS
3259 relocs, and there's not much point in propagating relocs to shared
3260 libs that the dynamic linker won't relocate. */
3261 if ((sec->flags & SEC_ALLOC) == 0)
3262 return TRUE;
3263
252b5132 3264#ifdef DEBUG
25dbc73a
AM
3265 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3266 sec, abfd);
252b5132
RH
3267#endif
3268
0c8d6e5c 3269 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3270
25dbc73a
AM
3271 /* Initialize howto table if not already done. */
3272 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3273 ppc_elf_howto_init ();
3274
7619e7c7 3275 htab = ppc_elf_hash_table (info);
0ffa91dd 3276 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 3277 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3278 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
3279 sreloc = NULL;
3280
3281 rel_end = relocs + sec->reloc_count;
3282 for (rel = relocs; rel < rel_end; rel++)
3283 {
3284 unsigned long r_symndx;
3285 enum elf_ppc_reloc_type r_type;
3286 struct elf_link_hash_entry *h;
3287 int tls_type = 0;
3288
3289 r_symndx = ELF32_R_SYM (rel->r_info);
3290 if (r_symndx < symtab_hdr->sh_info)
3291 h = NULL;
3292 else
973a3492
L
3293 {
3294 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3295 while (h->root.type == bfd_link_hash_indirect
3296 || h->root.type == bfd_link_hash_warning)
3297 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3298 }
25dbc73a
AM
3299
3300 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3301 This shows up in particular in an R_PPC_ADDR32 in the eabi
3302 startup code. */
3b36f7e6
AM
3303 if (h != NULL
3304 && htab->got == NULL
3305 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3306 {
3b36f7e6
AM
3307 if (htab->elf.dynobj == NULL)
3308 htab->elf.dynobj = abfd;
3309 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3310 return FALSE;
3311 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3312 }
252b5132 3313
25dbc73a
AM
3314 r_type = ELF32_R_TYPE (rel->r_info);
3315 switch (r_type)
3316 {
3317 case R_PPC_GOT_TLSLD16:
3318 case R_PPC_GOT_TLSLD16_LO:
3319 case R_PPC_GOT_TLSLD16_HI:
3320 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
3321 tls_type = TLS_TLS | TLS_LD;
3322 goto dogottls;
252b5132 3323
25dbc73a
AM
3324 case R_PPC_GOT_TLSGD16:
3325 case R_PPC_GOT_TLSGD16_LO:
3326 case R_PPC_GOT_TLSGD16_HI:
3327 case R_PPC_GOT_TLSGD16_HA:
3328 tls_type = TLS_TLS | TLS_GD;
3329 goto dogottls;
3330
3331 case R_PPC_GOT_TPREL16:
3332 case R_PPC_GOT_TPREL16_LO:
3333 case R_PPC_GOT_TPREL16_HI:
3334 case R_PPC_GOT_TPREL16_HA:
1d483afe 3335 if (!info->executable)
25dbc73a
AM
3336 info->flags |= DF_STATIC_TLS;
3337 tls_type = TLS_TLS | TLS_TPREL;
3338 goto dogottls;
3339
3340 case R_PPC_GOT_DTPREL16:
3341 case R_PPC_GOT_DTPREL16_LO:
3342 case R_PPC_GOT_DTPREL16_HI:
3343 case R_PPC_GOT_DTPREL16_HA:
3344 tls_type = TLS_TLS | TLS_DTPREL;
3345 dogottls:
3346 sec->has_tls_reloc = 1;
3347 /* Fall thru */
252b5132 3348
25dbc73a
AM
3349 /* GOT16 relocations */
3350 case R_PPC_GOT16:
3351 case R_PPC_GOT16_LO:
3352 case R_PPC_GOT16_HI:
3353 case R_PPC_GOT16_HA:
3354 /* This symbol requires a global offset table entry. */
3355 if (htab->got == NULL)
3356 {
3357 if (htab->elf.dynobj == NULL)
3358 htab->elf.dynobj = abfd;
3359 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3360 return FALSE;
3361 }
3362 if (h != NULL)
3363 {
3364 h->got.refcount += 1;
3365 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3366 }
3367 else
3368 /* This is a global offset table entry for a local symbol. */
3369 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3370 return FALSE;
3371 break;
252b5132 3372
25dbc73a
AM
3373 /* Indirect .sdata relocation. */
3374 case R_PPC_EMB_SDAI16:
3375 if (info->shared)
3376 {
3377 bad_shared_reloc (abfd, r_type);
3378 return FALSE;
3379 }
c9a2f333
AM
3380 if (htab->sdata[0].section == NULL
3381 && !ppc_elf_create_linker_section (abfd, info, 0,
3382 &htab->sdata[0]))
3383 return FALSE;
76750a2f
AM
3384 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3385 h, rel))
25dbc73a 3386 return FALSE;
046183de
AM
3387 if (h != NULL)
3388 {
3389 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3390 h->non_got_ref = TRUE;
3391 }
25dbc73a 3392 break;
252b5132 3393
25dbc73a
AM
3394 /* Indirect .sdata2 relocation. */
3395 case R_PPC_EMB_SDA2I16:
3396 if (info->shared)
3397 {
3398 bad_shared_reloc (abfd, r_type);
3399 return FALSE;
3400 }
c9a2f333
AM
3401 if (htab->sdata[1].section == NULL
3402 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3403 &htab->sdata[1]))
3404 return FALSE;
76750a2f
AM
3405 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3406 h, rel))
25dbc73a 3407 return FALSE;
046183de
AM
3408 if (h != NULL)
3409 {
3410 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3411 h->non_got_ref = TRUE;
3412 }
25dbc73a 3413 break;
252b5132 3414
25dbc73a 3415 case R_PPC_SDAREL16:
046183de
AM
3416 if (info->shared)
3417 {
3418 bad_shared_reloc (abfd, r_type);
3419 return FALSE;
3420 }
3421 if (htab->sdata[0].sym == NULL
3422 && !create_sdata_sym (htab, &htab->sdata[0]))
3423 return FALSE;
3424 if (h != NULL)
3425 {
3426 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3427 h->non_got_ref = TRUE;
3428 }
3429 break;
3430
25dbc73a 3431 case R_PPC_EMB_SDA2REL:
046183de
AM
3432 if (info->shared)
3433 {
3434 bad_shared_reloc (abfd, r_type);
3435 return FALSE;
3436 }
3437 if (htab->sdata[1].sym == NULL
3438 && !create_sdata_sym (htab, &htab->sdata[1]))
3439 return FALSE;
3440 if (h != NULL)
3441 {
3442 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3443 h->non_got_ref = TRUE;
3444 }
3445 break;
3446
25dbc73a
AM
3447 case R_PPC_EMB_SDA21:
3448 case R_PPC_EMB_RELSDA:
046183de
AM
3449 if (info->shared)
3450 {
3451 bad_shared_reloc (abfd, r_type);
3452 return FALSE;
3453 }
3454 if (htab->sdata[0].sym == NULL
3455 && !create_sdata_sym (htab, &htab->sdata[0]))
3456 return FALSE;
3457 if (htab->sdata[1].sym == NULL
3458 && !create_sdata_sym (htab, &htab->sdata[1]))
3459 return FALSE;
3460 if (h != NULL)
3461 {
3462 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3463 h->non_got_ref = TRUE;
3464 }
3465 break;
3466
25dbc73a
AM
3467 case R_PPC_EMB_NADDR32:
3468 case R_PPC_EMB_NADDR16:
3469 case R_PPC_EMB_NADDR16_LO:
3470 case R_PPC_EMB_NADDR16_HI:
3471 case R_PPC_EMB_NADDR16_HA:
3472 if (info->shared)
3473 {
3474 bad_shared_reloc (abfd, r_type);
3475 return FALSE;
3476 }
4dc4a9a5 3477 if (h != NULL)
046183de 3478 h->non_got_ref = TRUE;
25dbc73a 3479 break;
252b5132 3480
25dbc73a
AM
3481 case R_PPC_PLT32:
3482 case R_PPC_PLTREL24:
3483 case R_PPC_PLTREL32:
3484 case R_PPC_PLT16_LO:
3485 case R_PPC_PLT16_HI:
3486 case R_PPC_PLT16_HA:
3487#ifdef DEBUG
3488 fprintf (stderr, "Reloc requires a PLT entry\n");
3489#endif
3490 /* This symbol requires a procedure linkage table entry. We
3491 actually build the entry in finish_dynamic_symbol,
3492 because this might be a case of linking PIC code without
3493 linking in any dynamic objects, in which case we don't
3494 need to generate a procedure linkage table after all. */
7619e7c7 3495
25dbc73a
AM
3496 if (h == NULL)
3497 {
3498 /* It does not make sense to have a procedure linkage
3499 table entry for a local symbol. */
3500 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3501 "local symbol"),
3502 abfd,
3503 sec,
3504 (long) rel->r_offset,
3505 ppc_elf_howto_table[r_type]->name);
3506 bfd_set_error (bfd_error_bad_value);
3507 return FALSE;
3508 }
a6aa5195
AM
3509 else
3510 {
016687f8 3511 bfd_vma addend = 0;
ee05f2fe 3512
016687f8
AM
3513 if (r_type == R_PPC_PLTREL24)
3514 {
3515 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3516 addend = rel->r_addend;
3517 }
a6aa5195
AM
3518 h->needs_plt = 1;
3519 if (!update_plt_info (abfd, h, got2, addend))
3520 return FALSE;
3521 }
25dbc73a 3522 break;
ee05f2fe 3523
25dbc73a
AM
3524 /* The following relocations don't need to propagate the
3525 relocation if linking a shared object since they are
3526 section relative. */
3527 case R_PPC_SECTOFF:
3528 case R_PPC_SECTOFF_LO:
3529 case R_PPC_SECTOFF_HI:
3530 case R_PPC_SECTOFF_HA:
3531 case R_PPC_DTPREL16:
3532 case R_PPC_DTPREL16_LO:
3533 case R_PPC_DTPREL16_HI:
3534 case R_PPC_DTPREL16_HA:
3535 case R_PPC_TOC16:
3536 break;
252b5132 3537
d7128ce4
AM
3538 case R_PPC_REL16:
3539 case R_PPC_REL16_LO:
3540 case R_PPC_REL16_HI:
3541 case R_PPC_REL16_HA:
016687f8 3542 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
3543 break;
3544
a6aa5195 3545 /* These are just markers. */
25dbc73a
AM
3546 case R_PPC_TLS:
3547 case R_PPC_EMB_MRKREF:
3548 case R_PPC_NONE:
3549 case R_PPC_max:
3550 break;
252b5132 3551
25dbc73a
AM
3552 /* These should only appear in dynamic objects. */
3553 case R_PPC_COPY:
3554 case R_PPC_GLOB_DAT:
3555 case R_PPC_JMP_SLOT:
3556 case R_PPC_RELATIVE:
3557 break;
252b5132 3558
25dbc73a
AM
3559 /* These aren't handled yet. We'll report an error later. */
3560 case R_PPC_ADDR30:
3561 case R_PPC_EMB_RELSEC16:
3562 case R_PPC_EMB_RELST_LO:
3563 case R_PPC_EMB_RELST_HI:
3564 case R_PPC_EMB_RELST_HA:
3565 case R_PPC_EMB_BIT_FLD:
3566 break;
252b5132 3567
25dbc73a
AM
3568 /* This refers only to functions defined in the shared library. */
3569 case R_PPC_LOCAL24PC:
4a3dc543 3570 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
3571 {
3572 htab->plt_type = PLT_OLD;
3573 htab->old_bfd = abfd;
3574 }
25dbc73a 3575 break;
252b5132 3576
25dbc73a
AM
3577 /* This relocation describes the C++ object vtable hierarchy.
3578 Reconstruct it for later use during GC. */
3579 case R_PPC_GNU_VTINHERIT:
3580 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3581 return FALSE;
3582 break;
252b5132 3583
25dbc73a
AM
3584 /* This relocation describes which C++ vtable entries are actually
3585 used. Record for later use during GC. */
3586 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
3587 BFD_ASSERT (h != NULL);
3588 if (h != NULL
3589 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
3590 return FALSE;
3591 break;
252b5132 3592
25dbc73a
AM
3593 /* We shouldn't really be seeing these. */
3594 case R_PPC_TPREL32:
1d483afe
AM
3595 case R_PPC_TPREL16:
3596 case R_PPC_TPREL16_LO:
3597 case R_PPC_TPREL16_HI:
3598 case R_PPC_TPREL16_HA:
3599 if (!info->executable)
25dbc73a
AM
3600 info->flags |= DF_STATIC_TLS;
3601 goto dodyn;
252b5132 3602
25dbc73a
AM
3603 /* Nor these. */
3604 case R_PPC_DTPMOD32:
3605 case R_PPC_DTPREL32:
3606 goto dodyn;
252b5132 3607
9edfd1af
AM
3608 case R_PPC_REL32:
3609 if (h == NULL
3610 && got2 != NULL
3611 && (sec->flags & SEC_CODE) != 0
3612 && (info->shared || info->pie)
4a3dc543 3613 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
3614 {
3615 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3616 the start of a function, which assembles to a REL32
3617 reference to .got2. If we detect one of these, then
3618 force the old PLT layout because the linker cannot
3619 reliably deduce the GOT pointer value needed for
3620 PLT call stubs. */
3621 asection *s;
3622
3623 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3624 r_symndx);
3625 if (s == got2)
016687f8
AM
3626 {
3627 htab->plt_type = PLT_OLD;
3628 htab->old_bfd = abfd;
3629 }
9edfd1af 3630 }
7123df0e 3631 if (h == NULL || h == htab->elf.hgot)
fd38b44c 3632 break;
625af618
AM
3633 /* fall through */
3634
3635 case R_PPC_ADDR32:
3636 case R_PPC_ADDR16:
3637 case R_PPC_ADDR16_LO:
3638 case R_PPC_ADDR16_HI:
3639 case R_PPC_ADDR16_HA:
3640 case R_PPC_UADDR32:
3641 case R_PPC_UADDR16:
3642 if (h != NULL && !info->shared)
3643 {
3644 /* We may need a plt entry if the symbol turns out to be
3645 a function defined in a dynamic object. */
3646 if (!update_plt_info (abfd, h, NULL, 0))
3647 return FALSE;
3648
3649 /* We may need a copy reloc too. */
3650 h->non_got_ref = 1;
3651 h->pointer_equality_needed = 1;
3652 }
3653 goto dodyn;
9edfd1af 3654
25dbc73a
AM
3655 case R_PPC_REL24:
3656 case R_PPC_REL14:
3657 case R_PPC_REL14_BRTAKEN:
3658 case R_PPC_REL14_BRNTAKEN:
d7128ce4 3659 if (h == NULL)
25dbc73a 3660 break;
7123df0e 3661 if (h == htab->elf.hgot)
d7128ce4 3662 {
7123df0e 3663 if (htab->plt_type == PLT_UNSET)
016687f8
AM
3664 {
3665 htab->plt_type = PLT_OLD;
3666 htab->old_bfd = abfd;
3667 }
d7128ce4
AM
3668 break;
3669 }
25dbc73a 3670 /* fall through */
ee05f2fe 3671
25dbc73a 3672 case R_PPC_ADDR24:
25dbc73a
AM
3673 case R_PPC_ADDR14:
3674 case R_PPC_ADDR14_BRTAKEN:
3675 case R_PPC_ADDR14_BRNTAKEN:
25dbc73a
AM
3676 if (h != NULL && !info->shared)
3677 {
3678 /* We may need a plt entry if the symbol turns out to be
3679 a function defined in a dynamic object. */
a6aa5195
AM
3680 if (!update_plt_info (abfd, h, NULL, 0))
3681 return FALSE;
625af618 3682 break;
25dbc73a 3683 }
7619e7c7 3684
25dbc73a
AM
3685 dodyn:
3686 /* If we are creating a shared library, and this is a reloc
3687 against a global symbol, or a non PC relative reloc
3688 against a local symbol, then we need to copy the reloc
3689 into the shared library. However, if we are linking with
3690 -Bsymbolic, we do not need to copy a reloc against a
3691 global symbol which is defined in an object we are
3692 including in the link (i.e., DEF_REGULAR is set). At
3693 this point we have not seen all the input files, so it is
3694 possible that DEF_REGULAR is not set now but will be set
3695 later (it is never cleared). In case of a weak definition,
3696 DEF_REGULAR may be cleared later by a strong definition in
3697 a shared library. We account for that possibility below by
3698 storing information in the dyn_relocs field of the hash
3699 table entry. A similar situation occurs when creating
3700 shared libraries and symbol visibility changes render the
3701 symbol local.
7619e7c7 3702
25dbc73a
AM
3703 If on the other hand, we are creating an executable, we
3704 may need to keep relocations for symbols satisfied by a
3705 dynamic library if we manage to avoid copy relocs for the
3706 symbol. */
3707 if ((info->shared
1d483afe 3708 && (must_be_dyn_reloc (info, r_type)
25dbc73a
AM
3709 || (h != NULL
3710 && (! info->symbolic
3711 || h->root.type == bfd_link_hash_defweak
3712 || !h->def_regular))))
3713 || (ELIMINATE_COPY_RELOCS
3714 && !info->shared
25dbc73a
AM
3715 && h != NULL
3716 && (h->root.type == bfd_link_hash_defweak
3717 || !h->def_regular)))
3718 {
3719 struct ppc_elf_dyn_relocs *p;
3720 struct ppc_elf_dyn_relocs **head;
7619e7c7 3721
25dbc73a
AM
3722#ifdef DEBUG
3723 fprintf (stderr,
3724 "ppc_elf_check_relocs needs to "
3725 "create relocation for %s\n",
3726 (h && h->root.root.string
3727 ? h->root.root.string : "<unknown>"));
3728#endif
3729 if (sreloc == NULL)
3730 {
3731 const char *name;
7619e7c7 3732
25dbc73a
AM
3733 name = (bfd_elf_string_from_elf_section
3734 (abfd,
3735 elf_elfheader (abfd)->e_shstrndx,
3736 elf_section_data (sec)->rel_hdr.sh_name));
3737 if (name == NULL)
3738 return FALSE;
7619e7c7 3739
0112cd26 3740 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
25dbc73a
AM
3741 && strcmp (bfd_get_section_name (abfd, sec),
3742 name + 5) == 0);
7619e7c7 3743
c9a2f333
AM
3744 if (htab->elf.dynobj == NULL)
3745 htab->elf.dynobj = abfd;
25dbc73a
AM
3746 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3747 if (sreloc == NULL)
3748 {
3749 flagword flags;
7619e7c7 3750
25dbc73a 3751 flags = (SEC_HAS_CONTENTS | SEC_READONLY
c87b5a93
AM
3752 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3753 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L
3754 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3755 name,
3756 flags);
25dbc73a 3757 if (sreloc == NULL
25dbc73a
AM
3758 || ! bfd_set_section_alignment (htab->elf.dynobj,
3759 sreloc, 2))
3760 return FALSE;
3761 }
3762 elf_section_data (sec)->sreloc = sreloc;
3763 }
7619e7c7 3764
25dbc73a
AM
3765 /* If this is a global symbol, we count the number of
3766 relocations we need for this symbol. */
3767 if (h != NULL)
3768 {
3769 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3770 }
3771 else
3772 {
3773 /* Track dynamic relocs needed for local syms too.
3774 We really need local syms available to do this
3775 easily. Oh well. */
7619e7c7 3776
25dbc73a 3777 asection *s;
6edfbbad
DJ
3778 void *vpp;
3779
25dbc73a
AM
3780 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3781 sec, r_symndx);
3782 if (s == NULL)
3783 return FALSE;
7fce784e 3784
6edfbbad
DJ
3785 vpp = &elf_section_data (s)->local_dynrel;
3786 head = (struct ppc_elf_dyn_relocs **) vpp;
25dbc73a 3787 }
7fce784e 3788
25dbc73a
AM
3789 p = *head;
3790 if (p == NULL || p->sec != sec)
3791 {
3792 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3793 if (p == NULL)
3794 return FALSE;
3795 p->next = *head;
3796 *head = p;
3797 p->sec = sec;
3798 p->count = 0;
3799 p->pc_count = 0;
3800 }
3801
3802 p->count += 1;
1d483afe 3803 if (!must_be_dyn_reloc (info, r_type))
25dbc73a 3804 p->pc_count += 1;
7619e7c7 3805 }
25dbc73a
AM
3806
3807 break;
7619e7c7
AM
3808 }
3809 }
ee05f2fe 3810
25dbc73a
AM
3811 return TRUE;
3812}
3813\f
34c8bcba
JM
3814
3815/* Merge object attributes from IBFD into OBFD. Raise an error if
3816 there are conflicting attributes. */
3817static bfd_boolean
3818ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
3819{
c6e65352
DJ
3820 obj_attribute *in_attr, *in_attrs;
3821 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM
3822
3823 if (!elf_known_obj_attributes_proc (obfd)[0].i)
3824 {
3825 /* This is the first object. Copy the attributes. */
3826 _bfd_elf_copy_obj_attributes (ibfd, obfd);
3827
3828 /* Use the Tag_null value to indicate the attributes have been
3829 initialized. */
3830 elf_known_obj_attributes_proc (obfd)[0].i = 1;
3831
3832 return TRUE;
3833 }
3834
c6e65352
DJ
3835 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3836 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3837
34c8bcba
JM
3838 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3839 non-conflicting ones. */
c6e65352
DJ
3840 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
3841 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
3842 if (in_attr->i != out_attr->i)
34c8bcba 3843 {
c6e65352
DJ
3844 out_attr->type = 1;
3845 if (out_attr->i == 0)
3846 out_attr->i = in_attr->i;
3847 else if (in_attr->i == 0)
34c8bcba 3848 ;
c6e65352 3849 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM
3850 _bfd_error_handler
3851 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
c6e65352 3852 else if (out_attr->i == 2 && in_attr->i == 1)
34c8bcba
JM
3853 _bfd_error_handler
3854 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
c6e65352 3855 else if (in_attr->i > 2)
34c8bcba
JM
3856 _bfd_error_handler
3857 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 3858 in_attr->i);
34c8bcba
JM
3859 else
3860 _bfd_error_handler
3861 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ
3862 out_attr->i);
3863 }
3864
3865 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3866 merge non-conflicting ones. */
3867 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
3868 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
3869 if (in_attr->i != out_attr->i)
3870 {
3871 const char *in_abi = NULL, *out_abi = NULL;
3872
3873 switch (in_attr->i)
3874 {
3875 case 1: in_abi = "generic"; break;
3876 case 2: in_abi = "AltiVec"; break;
3877 case 3: in_abi = "SPE"; break;
3878 }
3879
3880 switch (out_attr->i)
3881 {
3882 case 1: out_abi = "generic"; break;
3883 case 2: out_abi = "AltiVec"; break;
3884 case 3: out_abi = "SPE"; break;
3885 }
3886
3887 out_attr->type = 1;
3888 if (out_attr->i == 0)
3889 out_attr->i = in_attr->i;
3890 else if (in_attr->i == 0)
3891 ;
3892 /* For now, allow generic to transition to AltiVec or SPE
3893 without a warning. If GCC marked files with their stack
3894 alignment and used don't-care markings for files which are
3895 not affected by the vector ABI, we could warn about this
3896 case too. */
3897 else if (out_attr->i == 1)
3898 out_attr->i = in_attr->i;
3899 else if (in_attr->i == 1)
3900 ;
3901 else if (in_abi == NULL)
3902 _bfd_error_handler
3903 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
3904 in_attr->i);
3905 else if (out_abi == NULL)
3906 _bfd_error_handler
3907 (_("Warning: %B uses unknown vector ABI %d"), obfd,
3908 in_attr->i);
3909 else
3910 _bfd_error_handler
3911 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
3912 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM
3913 }
3914
3915 /* Merge Tag_compatibility attributes and any common GNU ones. */
3916 _bfd_elf_merge_object_attributes (ibfd, obfd);
3917
3918 return TRUE;
3919}
3920
8853c3d3
AM
3921/* Merge backend specific data from an object file to the output
3922 object file when linking. */
3923
3924static bfd_boolean
3925ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3926{
3927 flagword old_flags;
3928 flagword new_flags;
3929 bfd_boolean error;
3930
0c8d6e5c 3931 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
3932 return TRUE;
3933
3934 /* Check if we have the same endianess. */
3935 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3936 return FALSE;
3937
34c8bcba
JM
3938 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
3939 return FALSE;
3940
8853c3d3
AM
3941 new_flags = elf_elfheader (ibfd)->e_flags;
3942 old_flags = elf_elfheader (obfd)->e_flags;
3943 if (!elf_flags_init (obfd))
3944 {
3945 /* First call, no flags set. */
3946 elf_flags_init (obfd) = TRUE;
3947 elf_elfheader (obfd)->e_flags = new_flags;
3948 }
3949
3950 /* Compatible flags are ok. */
3951 else if (new_flags == old_flags)
3952 ;
3953
3954 /* Incompatible flags. */
3955 else
3956 {
3957 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3958 to be linked with either. */
3959 error = FALSE;
3960 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3961 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3962 {
3963 error = TRUE;
3964 (*_bfd_error_handler)
3965 (_("%B: compiled with -mrelocatable and linked with "
3966 "modules compiled normally"), ibfd);
3967 }
3968 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3969 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3970 {
3971 error = TRUE;
3972 (*_bfd_error_handler)
3973 (_("%B: compiled normally and linked with "
3974 "modules compiled with -mrelocatable"), ibfd);
3975 }
3976
3977 /* The output is -mrelocatable-lib iff both the input files are. */
3978 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3979 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3980
3981 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3982 but each input file is either -mrelocatable or -mrelocatable-lib. */
3983 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3984 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3985 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3986 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3987
3988 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3989 any module uses it. */
3990 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3991
3992 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3993 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3994
3995 /* Warn about any other mismatches. */
3996 if (new_flags != old_flags)
3997 {
3998 error = TRUE;
3999 (*_bfd_error_handler)
4000 (_("%B: uses different e_flags (0x%lx) fields "
4001 "than previous modules (0x%lx)"),
4002 ibfd, (long) new_flags, (long) old_flags);
4003 }
4004
4005 if (error)
4006 {
4007 bfd_set_error (bfd_error_bad_value);
4008 return FALSE;
4009 }
4010 }
4011
4012 return TRUE;
4013}
4014\f
d7128ce4
AM
4015/* Choose which PLT scheme to use, and set .plt flags appropriately.
4016 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4017int
4018ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4019 struct bfd_link_info *info,
016687f8 4020 enum ppc_elf_plt_type plt_style,
0ba07910 4021 int emit_stub_syms)
d7128ce4
AM
4022{
4023 struct ppc_elf_link_hash_table *htab;
9d8504b1 4024 flagword flags;
d7128ce4
AM
4025
4026 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4027
4028 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4029 {
4030 if (plt_style == PLT_OLD)
4031 htab->plt_type = PLT_OLD;
4032 else
4033 {
4034 bfd *ibfd;
4035 enum ppc_elf_plt_type plt_type = plt_style;
4036
4037 /* Look through the reloc flags left by ppc_elf_check_relocs.
4038 Use the old style bss plt if a file makes plt calls
4039 without using the new relocs, and if ld isn't given
4040 --secure-plt and we never see REL16 relocs. */
4041 if (plt_type == PLT_UNSET)
4042 plt_type = PLT_OLD;
60b31e8d 4043 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
0c8d6e5c 4044 if (is_ppc_elf (ibfd))
016687f8
AM
4045 {
4046 if (ppc_elf_tdata (ibfd)->has_rel16)
4047 plt_type = PLT_NEW;
4048 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4049 {
4050 plt_type = PLT_OLD;
4051 htab->old_bfd = ibfd;
4052 break;
4053 }
4054 }
4055 htab->plt_type = plt_type;
4056 }
4057 }
4058 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4059 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
d7128ce4 4060
0ba07910
AM
4061 htab->emit_stub_syms = emit_stub_syms;
4062
4a3dc543 4063 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4064
4a3dc543 4065 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
4066 {
4067 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4068 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
4069
4070 /* The new PLT is a loaded section. */
4071 if (htab->plt != NULL
4072 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4073 return -1;
4074
4075 /* The new GOT is not executable. */
4076 if (htab->got != NULL
4077 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4078 return -1;
d7128ce4
AM
4079 }
4080 else
4081 {
4082 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
4083 if (htab->glink != NULL
4084 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4085 return -1;
d7128ce4 4086 }
4a3dc543 4087 return htab->plt_type == PLT_NEW;
d7128ce4
AM
4088}
4089\f
25dbc73a
AM
4090/* Return the section that should be marked against GC for a given
4091 relocation. */
586119b3 4092
25dbc73a
AM
4093static asection *
4094ppc_elf_gc_mark_hook (asection *sec,
07adf181 4095 struct bfd_link_info *info,
25dbc73a
AM
4096 Elf_Internal_Rela *rel,
4097 struct elf_link_hash_entry *h,
4098 Elf_Internal_Sym *sym)
4099{
4100 if (h != NULL)
07adf181
AM
4101 switch (ELF32_R_TYPE (rel->r_info))
4102 {
4103 case R_PPC_GNU_VTINHERIT:
4104 case R_PPC_GNU_VTENTRY:
4105 return NULL;
4106 }
4107
4108 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 4109}
a876ecf9 4110
25dbc73a
AM
4111/* Update the got, plt and dynamic reloc reference counts for the
4112 section being removed. */
4113
4114static bfd_boolean
4115ppc_elf_gc_sweep_hook (bfd *abfd,
4116 struct bfd_link_info *info,
4117 asection *sec,
4118 const Elf_Internal_Rela *relocs)
4119{
4120 struct ppc_elf_link_hash_table *htab;
4121 Elf_Internal_Shdr *symtab_hdr;
4122 struct elf_link_hash_entry **sym_hashes;
4123 bfd_signed_vma *local_got_refcounts;
4124 const Elf_Internal_Rela *rel, *relend;
a6aa5195 4125 asection *got2;
25dbc73a 4126
7dda2462
TG
4127 if (info->relocatable)
4128 return TRUE;
4129
c87b5a93
AM
4130 if ((sec->flags & SEC_ALLOC) == 0)
4131 return TRUE;
4132
25dbc73a
AM
4133 elf_section_data (sec)->local_dynrel = NULL;
4134
4135 htab = ppc_elf_hash_table (info);
0ffa91dd 4136 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
4137 sym_hashes = elf_sym_hashes (abfd);
4138 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 4139 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4140
4141 relend = relocs + sec->reloc_count;
4142 for (rel = relocs; rel < relend; rel++)
4143 {
4144 unsigned long r_symndx;
4145 enum elf_ppc_reloc_type r_type;
4146 struct elf_link_hash_entry *h = NULL;
4147
4148 r_symndx = ELF32_R_SYM (rel->r_info);
4149 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 4150 {
25dbc73a
AM
4151 struct ppc_elf_dyn_relocs **pp, *p;
4152 struct ppc_elf_link_hash_entry *eh;
4153
4154 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4155 while (h->root.type == bfd_link_hash_indirect
4156 || h->root.type == bfd_link_hash_warning)
4157 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4158 eh = (struct ppc_elf_link_hash_entry *) h;
4159
4160 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4161 if (p->sec == sec)
4162 {
4163 /* Everything must go for SEC. */
4164 *pp = p->next;
4165 break;
4166 }
a876ecf9 4167 }
ee05f2fe 4168
25dbc73a
AM
4169 r_type = ELF32_R_TYPE (rel->r_info);
4170 switch (r_type)
ee05f2fe 4171 {
25dbc73a
AM
4172 case R_PPC_GOT_TLSLD16:
4173 case R_PPC_GOT_TLSLD16_LO:
4174 case R_PPC_GOT_TLSLD16_HI:
4175 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4176 case R_PPC_GOT_TLSGD16:
4177 case R_PPC_GOT_TLSGD16_LO:
4178 case R_PPC_GOT_TLSGD16_HI:
4179 case R_PPC_GOT_TLSGD16_HA:
4180 case R_PPC_GOT_TPREL16:
4181 case R_PPC_GOT_TPREL16_LO:
4182 case R_PPC_GOT_TPREL16_HI:
4183 case R_PPC_GOT_TPREL16_HA:
4184 case R_PPC_GOT_DTPREL16:
4185 case R_PPC_GOT_DTPREL16_LO:
4186 case R_PPC_GOT_DTPREL16_HI:
4187 case R_PPC_GOT_DTPREL16_HA:
4188 case R_PPC_GOT16:
4189 case R_PPC_GOT16_LO:
4190 case R_PPC_GOT16_HI:
4191 case R_PPC_GOT16_HA:
4192 if (h != NULL)
ee05f2fe 4193 {
25dbc73a
AM
4194 if (h->got.refcount > 0)
4195 h->got.refcount--;
ee05f2fe 4196 }
25dbc73a
AM
4197 else if (local_got_refcounts != NULL)
4198 {
4199 if (local_got_refcounts[r_symndx] > 0)
4200 local_got_refcounts[r_symndx]--;
4201 }
4202 break;
ee05f2fe 4203
25dbc73a
AM
4204 case R_PPC_REL24:
4205 case R_PPC_REL14:
4206 case R_PPC_REL14_BRTAKEN:
4207 case R_PPC_REL14_BRNTAKEN:
4208 case R_PPC_REL32:
3b36f7e6 4209 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM
4210 break;
4211 /* Fall thru */
ee05f2fe 4212
25dbc73a
AM
4213 case R_PPC_ADDR32:
4214 case R_PPC_ADDR24:
4215 case R_PPC_ADDR16:
4216 case R_PPC_ADDR16_LO:
4217 case R_PPC_ADDR16_HI:
4218 case R_PPC_ADDR16_HA:
4219 case R_PPC_ADDR14:
4220 case R_PPC_ADDR14_BRTAKEN:
4221 case R_PPC_ADDR14_BRNTAKEN:
4222 case R_PPC_UADDR32:
4223 case R_PPC_UADDR16:
87538722
AM
4224 if (info->shared)
4225 break;
4226
25dbc73a
AM
4227 case R_PPC_PLT32:
4228 case R_PPC_PLTREL24:
87538722 4229 case R_PPC_PLTREL32:
25dbc73a
AM
4230 case R_PPC_PLT16_LO:
4231 case R_PPC_PLT16_HI:
4232 case R_PPC_PLT16_HA:
4233 if (h != NULL)
4234 {
a6aa5195
AM
4235 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
4236 struct plt_entry *ent = find_plt_ent (h, got2, addend);
4237 if (ent->plt.refcount > 0)
4238 ent->plt.refcount -= 1;
25dbc73a
AM
4239 }
4240 break;
ee05f2fe 4241
25dbc73a
AM
4242 default:
4243 break;
4244 }
7fce784e 4245 }
7fce784e
AS
4246 return TRUE;
4247}
25dbc73a
AM
4248\f
4249/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7fce784e 4250
25dbc73a
AM
4251asection *
4252ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 4253{
25dbc73a 4254 struct ppc_elf_link_hash_table *htab;
7fce784e 4255
25dbc73a 4256 htab = ppc_elf_hash_table (info);
4a3dc543 4257 if (htab->plt_type == PLT_NEW
d7128ce4
AM
4258 && htab->plt != NULL
4259 && htab->plt->output_section != NULL)
4260 {
4261 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4262 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4263 }
4264
25dbc73a
AM
4265 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4266 FALSE, FALSE, TRUE);
25dbc73a 4267 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
4268}
4269
25dbc73a
AM
4270/* Run through all the TLS relocs looking for optimization
4271 opportunities. */
252b5132 4272
25dbc73a
AM
4273bfd_boolean
4274ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4275 struct bfd_link_info *info)
252b5132 4276{
7fce784e 4277 bfd *ibfd;
25dbc73a
AM
4278 asection *sec;
4279 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 4280 int pass;
252b5132 4281
1d483afe 4282 if (info->relocatable || !info->executable)
25dbc73a 4283 return TRUE;
252b5132 4284
7619e7c7 4285 htab = ppc_elf_hash_table (info);
b7fcf6f6
AM
4286 /* Make two passes through the relocs. First time check that tls
4287 relocs involved in setting up a tls_get_addr call are indeed
4288 followed by such a call. If they are not, exclude them from
4289 the optimizations done on the second pass. */
4290 for (pass = 0; pass < 2; ++pass)
4291 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4292 {
4293 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 4294 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7619e7c7 4295
b7fcf6f6
AM
4296 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4297 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4298 {
4299 Elf_Internal_Rela *relstart, *rel, *relend;
252b5132 4300
b7fcf6f6
AM
4301 /* Read the relocations. */
4302 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4303 info->keep_memory);
4304 if (relstart == NULL)
4305 return FALSE;
7619e7c7 4306
b7fcf6f6
AM
4307 relend = relstart + sec->reloc_count;
4308 for (rel = relstart; rel < relend; rel++)
4309 {
4310 enum elf_ppc_reloc_type r_type;
4311 unsigned long r_symndx;
4312 struct elf_link_hash_entry *h = NULL;
4313 char *tls_mask;
4314 char tls_set, tls_clear;
4315 bfd_boolean is_local;
4316 int expecting_tls_get_addr;
4317 bfd_signed_vma *got_count;
4318
4319 r_symndx = ELF32_R_SYM (rel->r_info);
4320 if (r_symndx >= symtab_hdr->sh_info)
4321 {
4322 struct elf_link_hash_entry **sym_hashes;
7fce784e 4323
b7fcf6f6
AM
4324 sym_hashes = elf_sym_hashes (ibfd);
4325 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4326 while (h->root.type == bfd_link_hash_indirect
4327 || h->root.type == bfd_link_hash_warning)
4328 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4329 }
7619e7c7 4330
b7fcf6f6
AM
4331 expecting_tls_get_addr = 0;
4332 is_local = FALSE;
4333 if (h == NULL
4334 || !h->def_dynamic)
4335 is_local = TRUE;
7619e7c7 4336
b7fcf6f6
AM
4337 r_type = ELF32_R_TYPE (rel->r_info);
4338 switch (r_type)
4339 {
4340 case R_PPC_GOT_TLSLD16:
4341 case R_PPC_GOT_TLSLD16_LO:
4342 expecting_tls_get_addr = 1;
4343 /* Fall thru */
4344
4345 case R_PPC_GOT_TLSLD16_HI:
4346 case R_PPC_GOT_TLSLD16_HA:
4347 /* These relocs should never be against a symbol
4348 defined in a shared lib. Leave them alone if
4349 that turns out to be the case. */
4350 if (!is_local)
4351 continue;
4352
4353 /* LD -> LE */
4354 tls_set = 0;
4355 tls_clear = TLS_LD;
4356 break;
4357
4358 case R_PPC_GOT_TLSGD16:
4359 case R_PPC_GOT_TLSGD16_LO:
4360 expecting_tls_get_addr = 1;
4361 /* Fall thru */
4362
4363 case R_PPC_GOT_TLSGD16_HI:
4364 case R_PPC_GOT_TLSGD16_HA:
4365 if (is_local)
4366 /* GD -> LE */
4367 tls_set = 0;
4368 else
4369 /* GD -> IE */
4370 tls_set = TLS_TLS | TLS_TPRELGD;
4371 tls_clear = TLS_GD;
4372 break;
4373
4374 case R_PPC_GOT_TPREL16:
4375 case R_PPC_GOT_TPREL16_LO:
4376 case R_PPC_GOT_TPREL16_HI:
4377 case R_PPC_GOT_TPREL16_HA:
4378 if (is_local)
4379 {
4380 /* IE -> LE */
4381 tls_set = 0;
4382 tls_clear = TLS_TPREL;
4383 break;
4384 }
4385 else
4386 continue;
4387
4388 default:
25dbc73a 4389 continue;
b7fcf6f6 4390 }
25dbc73a 4391
b7fcf6f6
AM
4392 if (pass == 0)
4393 {
4394 if (!expecting_tls_get_addr)
4395 continue;
25dbc73a 4396
b7fcf6f6
AM
4397 if (rel + 1 < relend)
4398 {
4399 enum elf_ppc_reloc_type r_type2;
4400 unsigned long r_symndx2;
4401 struct elf_link_hash_entry *h2;
4402
4403 /* The next instruction should be a call to
4404 __tls_get_addr. Peek at the reloc to be sure. */
4405 r_type2 = ELF32_R_TYPE (rel[1].r_info);
4406 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
4407 if (r_symndx2 >= symtab_hdr->sh_info
4408 && (r_type2 == R_PPC_REL14
4409 || r_type2 == R_PPC_REL14_BRTAKEN
4410 || r_type2 == R_PPC_REL14_BRNTAKEN
4411 || r_type2 == R_PPC_REL24
4412 || r_type2 == R_PPC_PLTREL24))
4413 {
4414 struct elf_link_hash_entry **sym_hashes;
4415
4416 sym_hashes = elf_sym_hashes (ibfd);
4417 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
4418 while (h2->root.type == bfd_link_hash_indirect
4419 || h2->root.type == bfd_link_hash_warning)
4420 h2 = ((struct elf_link_hash_entry *)
4421 h2->root.u.i.link);
4422 if (h2 == htab->tls_get_addr)
4423 continue;
4424 }
4425 }
25dbc73a 4426
b7fcf6f6
AM
4427 /* Uh oh, we didn't find the expected call. We
4428 could just mark this symbol to exclude it
4429 from tls optimization but it's safer to skip
4430 the entire section. */
4431 sec->has_tls_reloc = 0;
4432 break;
4433 }
25dbc73a 4434
b7fcf6f6
AM
4435 if (h != NULL)
4436 {
4437 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4438 got_count = &h->got.refcount;
4439 }
4440 else
4441 {
4442 Elf_Internal_Sym *sym;
4443 bfd_signed_vma *lgot_refs;
4444 char *lgot_masks;
25dbc73a 4445
b7fcf6f6
AM
4446 if (locsyms == NULL)
4447 {
4448 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4449 if (locsyms == NULL)
4450 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4451 symtab_hdr->sh_info,
4452 0, NULL, NULL, NULL);
4453 if (locsyms == NULL)
4454 {
4455 if (elf_section_data (sec)->relocs != relstart)
4456 free (relstart);
4457 return FALSE;
4458 }
4459 }
4460 sym = locsyms + r_symndx;
4461 lgot_refs = elf_local_got_refcounts (ibfd);
4462 if (lgot_refs == NULL)
4463 abort ();
4464 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4465 tls_mask = &lgot_masks[r_symndx];
4466 got_count = &lgot_refs[r_symndx];
4467 }
25dbc73a 4468
b7fcf6f6
AM
4469 if (tls_set == 0)
4470 {
4471 /* We managed to get rid of a got entry. */
4472 if (*got_count > 0)
4473 *got_count -= 1;
4474 }
25dbc73a 4475
b7fcf6f6
AM
4476 if (expecting_tls_get_addr)
4477 {
4478 struct plt_entry *ent;
25dbc73a 4479
b7fcf6f6
AM
4480 ent = find_plt_ent (htab->tls_get_addr, NULL, 0);
4481 if (ent != NULL && ent->plt.refcount > 0)
4482 ent->plt.refcount -= 1;
4483 }
25dbc73a 4484
b7fcf6f6
AM
4485 *tls_mask |= tls_set;
4486 *tls_mask &= ~tls_clear;
4487 }
25dbc73a 4488
b7fcf6f6
AM
4489 if (elf_section_data (sec)->relocs != relstart)
4490 free (relstart);
4491 }
4492
4493 if (locsyms != NULL
4494 && (symtab_hdr->contents != (unsigned char *) locsyms))
4495 {
4496 if (!info->keep_memory)
4497 free (locsyms);
4498 else
4499 symtab_hdr->contents = (unsigned char *) locsyms;
4500 }
4501 }
25dbc73a
AM
4502 return TRUE;
4503}
4504\f
625af618
AM
4505/* Return true if we have dynamic relocs that apply to read-only sections. */
4506
4507static bfd_boolean
4508readonly_dynrelocs (struct elf_link_hash_entry *h)
4509{
4510 struct ppc_elf_dyn_relocs *p;
4511
4512 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4513 {
4514 asection *s = p->sec->output_section;
4515
4516 if (s != NULL
4517 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4518 == (SEC_READONLY | SEC_ALLOC)))
4519 return TRUE;
4520 }
4521 return FALSE;
4522}
4523
25dbc73a
AM
4524/* Adjust a symbol defined by a dynamic object and referenced by a
4525 regular object. The current definition is in some section of the
4526 dynamic object, but we're not including those sections. We have to
4527 change the definition to something the rest of the link can
4528 understand. */
7fce784e 4529
25dbc73a
AM
4530static bfd_boolean
4531ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4532 struct elf_link_hash_entry *h)
4533{
4534 struct ppc_elf_link_hash_table *htab;
4535 asection *s;
7fce784e 4536
25dbc73a
AM
4537#ifdef DEBUG
4538 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4539 h->root.root.string);
4540#endif
252b5132 4541
25dbc73a
AM
4542 /* Make sure we know what is going on here. */
4543 htab = ppc_elf_hash_table (info);
4544 BFD_ASSERT (htab->elf.dynobj != NULL
4545 && (h->needs_plt
4546 || h->u.weakdef != NULL
4547 || (h->def_dynamic
4548 && h->ref_regular
4549 && !h->def_regular)));
252b5132 4550
25dbc73a
AM
4551 /* Deal with function syms. */
4552 if (h->type == STT_FUNC
4553 || h->needs_plt)
4554 {
4555 /* Clear procedure linkage table information for any symbol that
4556 won't need a .plt entry. */
a6aa5195
AM
4557 struct plt_entry *ent;
4558 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4559 if (ent->plt.refcount > 0)
4560 break;
4561 if (ent == NULL
25dbc73a
AM
4562 || SYMBOL_CALLS_LOCAL (info, h)
4563 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4564 && h->root.type == bfd_link_hash_undefweak))
252b5132 4565 {
25dbc73a 4566 /* A PLT entry is not required/allowed when:
252b5132 4567
25dbc73a
AM
4568 1. We are not using ld.so; because then the PLT entry
4569 can't be set up, so we can't use one. In this case,
4570 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 4571
25dbc73a
AM
4572 2. GC has rendered the entry unused.
4573
4574 3. We know for certain that a call to this symbol
4575 will go to this object, or will remain undefined. */
a6aa5195 4576 h->plt.plist = NULL;
25dbc73a
AM
4577 h->needs_plt = 0;
4578 }
625af618
AM
4579 else
4580 {
4581 /* After adjust_dynamic_symbol, non_got_ref set means that
4582 dyn_relocs for this symbol should be discarded.
4583 If we get here we know we are making a PLT entry for this
4584 symbol, and in an executable we'd normally resolve
4585 relocations against this symbol to the PLT entry. Allow
4586 dynamic relocs if the reference is weak, and the dynamic
4587 relocs will not cause text relocation. */
4588 if (!h->ref_regular_nonweak
4589 && h->non_got_ref
4590 && !htab->is_vxworks
4591 && !ppc_elf_hash_entry (h)->has_sda_refs
4592 && !readonly_dynrelocs (h))
4593 h->non_got_ref = 0;
4594 }
25dbc73a 4595 return TRUE;
252b5132 4596 }
25dbc73a 4597 else
a6aa5195 4598 h->plt.plist = NULL;
252b5132 4599
25dbc73a
AM
4600 /* If this is a weak symbol, and there is a real definition, the
4601 processor independent code will have arranged for us to see the
4602 real definition first, and we can just use the same value. */
4603 if (h->u.weakdef != NULL)
252b5132 4604 {
25dbc73a
AM
4605 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4606 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4607 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4608 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4609 if (ELIMINATE_COPY_RELOCS)
4610 h->non_got_ref = h->u.weakdef->non_got_ref;
4611 return TRUE;
4612 }
dc810e39 4613
25dbc73a
AM
4614 /* This is a reference to a symbol defined by a dynamic object which
4615 is not a function. */
252b5132 4616
25dbc73a
AM
4617 /* If we are creating a shared library, we must presume that the
4618 only references to the symbol are via the global offset table.
4619 For such cases we need not do anything here; the relocations will
4620 be handled correctly by relocate_section. */
4621 if (info->shared)
4622 return TRUE;
252b5132 4623
25dbc73a
AM
4624 /* If there are no references to this symbol that do not use the
4625 GOT, we don't need to generate a copy reloc. */
4626 if (!h->non_got_ref)
4627 return TRUE;
4628
cfd2c773
NS
4629 /* If we didn't find any dynamic relocs in read-only sections, then
4630 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4631 We can't do this if there are any small data relocations. This
4632 doesn't work on VxWorks, where we can not have dynamic
4633 relocations (other than copy and jump slot relocations) in an
4634 executable. */
4dc4a9a5 4635 if (ELIMINATE_COPY_RELOCS
cfd2c773 4636 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
4637 && !htab->is_vxworks
4638 && !h->def_regular
4639 && !readonly_dynrelocs (h))
25dbc73a 4640 {
625af618
AM
4641 h->non_got_ref = 0;
4642 return TRUE;
252b5132
RH
4643 }
4644
909272ee
AM
4645 if (h->size == 0)
4646 {
4647 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4648 h->root.root.string);
4649 return TRUE;
4650 }
4651
25dbc73a
AM
4652 /* We must allocate the symbol in our .dynbss section, which will
4653 become part of the .bss section of the executable. There will be
4654 an entry for this symbol in the .dynsym section. The dynamic
4655 object will contain position independent code, so all references
4656 from the dynamic object to this symbol will go through the global
4657 offset table. The dynamic linker will use the .dynsym entry to
4658 determine the address it must put in the global offset table, so
4659 both the dynamic object and the regular object will refer to the
4660 same memory location for the variable.
4661
4dc4a9a5
DJ
4662 Of course, if the symbol is referenced using SDAREL relocs, we
4663 must instead allocate it in .sbss. */
25dbc73a 4664
4dc4a9a5 4665 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4666 s = htab->dynsbss;
4667 else
4668 s = htab->dynbss;
4669 BFD_ASSERT (s != NULL);
4670
4671 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4672 copy the initial value out of the dynamic object and into the
4673 runtime process image. We need to remember the offset into the
4674 .rela.bss section we are going to use. */
4675 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4676 {
4677 asection *srel;
4678
4dc4a9a5 4679 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4680 srel = htab->relsbss;
4681 else
4682 srel = htab->relbss;
4683 BFD_ASSERT (srel != NULL);
4684 srel->size += sizeof (Elf32_External_Rela);
4685 h->needs_copy = 1;
4686 }
7619e7c7 4687
027297b7 4688 return _bfd_elf_adjust_dynamic_copy (h, s);
25dbc73a
AM
4689}
4690\f
ac39eb42
AM
4691/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4692 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4693 specifying the addend on the plt relocation. For -fpic code, the sym
4694 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4695 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
4696
4697static bfd_boolean
4698add_stub_sym (struct plt_entry *ent,
4699 struct elf_link_hash_entry *h,
ac39eb42 4700 struct bfd_link_info *info)
0ba07910
AM
4701{
4702 struct elf_link_hash_entry *sh;
4703 size_t len1, len2, len3;
4704 char *name;
ac39eb42
AM
4705 const char *stub;
4706 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4707
4708 if (info->shared || info->pie)
4709 stub = ".plt_pic32.";
4710 else
4711 stub = ".plt_call32.";
0ba07910
AM
4712
4713 len1 = strlen (h->root.root.string);
ac39eb42 4714 len2 = strlen (stub);
0ba07910
AM
4715 len3 = 0;
4716 if (ent->sec)
4717 len3 = strlen (ent->sec->name);
ac39eb42 4718 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
4719 if (name == NULL)
4720 return FALSE;
4721 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4722 if (ent->sec)
4723 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
4724 memcpy (name + 8 + len3, stub, len2);
4725 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
4726 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4727 if (sh == NULL)
4728 return FALSE;
4729 if (sh->root.type == bfd_link_hash_new)
4730 {
4731 sh->root.type = bfd_link_hash_defined;
4732 sh->root.u.def.section = htab->glink;
4733 sh->root.u.def.value = ent->glink_offset;
4734 sh->ref_regular = 1;
4735 sh->def_regular = 1;
4736 sh->ref_regular_nonweak = 1;
4737 sh->forced_local = 1;
4738 sh->non_elf = 0;
4739 }
4740 return TRUE;
4741}
4742
3b36f7e6
AM
4743/* Allocate NEED contiguous space in .got, and return the offset.
4744 Handles allocation of the got header when crossing 32k. */
4745
4746static bfd_vma
4747allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4748{
4749 bfd_vma where;
4a3dc543 4750 unsigned int max_before_header;
3b36f7e6 4751
4a3dc543 4752 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
4753 {
4754 where = htab->got->size;
4755 htab->got->size += need;
4756 }
3b36f7e6
AM
4757 else
4758 {
4a3dc543
RS
4759 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4760 if (need <= htab->got_gap)
3b36f7e6 4761 {
4a3dc543
RS
4762 where = max_before_header - htab->got_gap;
4763 htab->got_gap -= need;
4764 }
4765 else
4766 {
4767 if (htab->got->size + need > max_before_header
4768 && htab->got->size <= max_before_header)
4769 {
4770 htab->got_gap = max_before_header - htab->got->size;
4771 htab->got->size = max_before_header + htab->got_header_size;
4772 }
4773 where = htab->got->size;
4774 htab->got->size += need;
3b36f7e6 4775 }
3b36f7e6
AM
4776 }
4777 return where;
4778}
4779
25dbc73a 4780/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 4781
b34976b6 4782static bfd_boolean
25dbc73a 4783allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 4784{
25dbc73a
AM
4785 struct bfd_link_info *info = inf;
4786 struct ppc_elf_link_hash_entry *eh;
7619e7c7 4787 struct ppc_elf_link_hash_table *htab;
25dbc73a 4788 struct ppc_elf_dyn_relocs *p;
252b5132 4789
25dbc73a 4790 if (h->root.type == bfd_link_hash_indirect)
b34976b6 4791 return TRUE;
252b5132 4792
25dbc73a
AM
4793 if (h->root.type == bfd_link_hash_warning)
4794 /* When warning symbols are created, they **replace** the "real"
4795 entry in the hash table, thus we never get to see the real
4796 symbol in a hash traversal. So look at it now. */
4797 h = (struct elf_link_hash_entry *) h->root.u.i.link;
e47cd125 4798
7619e7c7 4799 htab = ppc_elf_hash_table (info);
a6aa5195 4800 if (htab->elf.dynamic_sections_created)
252b5132 4801 {
a6aa5195
AM
4802 struct plt_entry *ent;
4803 bfd_boolean doneone = FALSE;
28e99bb6
AM
4804 bfd_vma plt_offset = 0, glink_offset = 0;
4805
a6aa5195
AM
4806 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4807 if (ent->plt.refcount > 0)
4808 {
4809 /* Make sure this symbol is output as a dynamic symbol. */
4810 if (h->dynindx == -1
4811 && !h->forced_local)
4812 {
4813 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4814 return FALSE;
4815 }
252b5132 4816
a6aa5195
AM
4817 if (info->shared
4818 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4819 {
4820 asection *s = htab->plt;
7619e7c7 4821
4a3dc543 4822 if (htab->plt_type == PLT_NEW)
a6aa5195 4823 {
a6aa5195 4824 if (!doneone)
28e99bb6
AM
4825 {
4826 plt_offset = s->size;
4827 s->size += 4;
4828 }
4829 ent->plt.offset = plt_offset;
d7128ce4 4830
a6aa5195 4831 s = htab->glink;
28e99bb6
AM
4832 if (!doneone || info->shared || info->pie)
4833 {
4834 glink_offset = s->size;
4835 s->size += GLINK_ENTRY_SIZE;
4836 }
4837 if (!doneone
4838 && !info->shared
625af618 4839 && h->def_dynamic
a6aa5195
AM
4840 && !h->def_regular)
4841 {
4842 h->root.u.def.section = s;
28e99bb6 4843 h->root.u.def.value = glink_offset;
a6aa5195 4844 }
28e99bb6 4845 ent->glink_offset = glink_offset;
0ba07910
AM
4846
4847 if (htab->emit_stub_syms
ac39eb42 4848 && !add_stub_sym (ent, h, info))
0ba07910 4849 return FALSE;
a6aa5195
AM
4850 }
4851 else
4852 {
a6aa5195
AM
4853 if (!doneone)
4854 {
28e99bb6
AM
4855 /* If this is the first .plt entry, make room
4856 for the special first entry. */
4857 if (s->size == 0)
9d8504b1 4858 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
4859
4860 /* The PowerPC PLT is actually composed of two
4861 parts, the first part is 2 words (for a load
4862 and a jump), and then there is a remaining
4863 word available at the end. */
9d8504b1
PB
4864 plt_offset = (htab->plt_initial_entry_size
4865 + (htab->plt_slot_size
4866 * ((s->size
4867 - htab->plt_initial_entry_size)
4868 / htab->plt_entry_size)));
28e99bb6
AM
4869
4870 /* If this symbol is not defined in a regular
4871 file, and we are not generating a shared
4872 library, then set the symbol to this location
4873 in the .plt. This is required to make
4874 function pointers compare as equal between
4875 the normal executable and the shared library. */
4876 if (! info->shared
625af618 4877 && h->def_dynamic
28e99bb6
AM
4878 && !h->def_regular)
4879 {
4880 h->root.u.def.section = s;
4881 h->root.u.def.value = plt_offset;
4882 }
4883
9d8504b1
PB
4884 /* Make room for this entry. */
4885 s->size += htab->plt_entry_size;
4886 /* After the 8192nd entry, room for two entries
4887 is allocated. */
4a3dc543 4888 if (htab->plt_type == PLT_OLD
9d8504b1
PB
4889 && (s->size - htab->plt_initial_entry_size)
4890 / htab->plt_entry_size
4891 > PLT_NUM_SINGLE_ENTRIES)
4892 s->size += htab->plt_entry_size;
a6aa5195 4893 }
28e99bb6 4894 ent->plt.offset = plt_offset;
a6aa5195 4895 }
25dbc73a 4896
a6aa5195
AM
4897 /* We also need to make an entry in the .rela.plt section. */
4898 if (!doneone)
4899 {
4900 htab->relplt->size += sizeof (Elf32_External_Rela);
9d8504b1 4901
4a3dc543 4902 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
4903 {
4904 /* Allocate space for the unloaded relocations. */
4905 if (!info->shared)
4906 {
4907 if (ent->plt.offset
4908 == (bfd_vma) htab->plt_initial_entry_size)
4909 {
4910 htab->srelplt2->size
4911 += sizeof (Elf32_External_Rela)
4912 * VXWORKS_PLTRESOLVE_RELOCS;
4913 }
4914
4915 htab->srelplt2->size
4916 += sizeof (Elf32_External_Rela)
4917 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4918 }
4919
4920 /* Every PLT entry has an associated GOT entry in
4921 .got.plt. */
4922 htab->sgotplt->size += 4;
4923 }
a6aa5195
AM
4924 doneone = TRUE;
4925 }
4926 }
4927 else
4928 ent->plt.offset = (bfd_vma) -1;
a6aa5195 4929 }
2ce859a1
AM
4930 else
4931 ent->plt.offset = (bfd_vma) -1;
4932
4933 if (!doneone)
4934 {
4935 h->plt.plist = NULL;
4936 h->needs_plt = 0;
4937 }
25dbc73a
AM
4938 }
4939 else
4940 {
a6aa5195 4941 h->plt.plist = NULL;
25dbc73a
AM
4942 h->needs_plt = 0;
4943 }
4944
4945 eh = (struct ppc_elf_link_hash_entry *) h;
4946 if (eh->elf.got.refcount > 0)
4947 {
4948 /* Make sure this symbol is output as a dynamic symbol. */
4949 if (eh->elf.dynindx == -1
4950 && !eh->elf.forced_local)
4951 {
4952 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 4953 return FALSE;
25dbc73a 4954 }
252b5132 4955
25dbc73a
AM
4956 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4957 && !eh->elf.def_dynamic)
b7fcf6f6
AM
4958 {
4959 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4960 htab->tlsld_got.refcount += 1;
4961 eh->elf.got.offset = (bfd_vma) -1;
4962 }
25dbc73a
AM
4963 else
4964 {
4965 bfd_boolean dyn;
3b36f7e6 4966 unsigned int need = 0;
25dbc73a 4967 if ((eh->tls_mask & TLS_TLS) != 0)
252b5132 4968 {
25dbc73a 4969 if ((eh->tls_mask & TLS_LD) != 0)
3b36f7e6 4970 need += 8;
25dbc73a 4971 if ((eh->tls_mask & TLS_GD) != 0)
3b36f7e6 4972 need += 8;
25dbc73a 4973 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
3b36f7e6 4974 need += 4;
25dbc73a 4975 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 4976 need += 4;
252b5132 4977 }
25dbc73a 4978 else
3b36f7e6
AM
4979 need += 4;
4980 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM
4981 dyn = htab->elf.dynamic_sections_created;
4982 if ((info->shared
4983 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4984 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4985 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 4986 {
3b36f7e6
AM
4987 /* All the entries we allocated need relocs.
4988 Except LD only needs one. */
25dbc73a 4989 if ((eh->tls_mask & TLS_LD) != 0)
3b36f7e6
AM
4990 need -= 4;
4991 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 4992 }
25dbc73a
AM
4993 }
4994 }
4995 else
4996 eh->elf.got.offset = (bfd_vma) -1;
252b5132 4997
25dbc73a
AM
4998 if (eh->dyn_relocs == NULL)
4999 return TRUE;
252b5132 5000
25dbc73a
AM
5001 /* In the shared -Bsymbolic case, discard space allocated for
5002 dynamic pc-relative relocs against symbols which turn out to be
5003 defined in regular objects. For the normal shared case, discard
5004 space for relocs that have become local due to symbol visibility
5005 changes. */
5006
5007 if (info->shared)
5008 {
5009 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 5010 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
5011 generated via assembly. We want calls to protected symbols to
5012 resolve directly to the function rather than going via the plt.
5013 If people want function pointer comparisons to work as expected
5014 then they should avoid writing weird assembly. */
5015 if (SYMBOL_CALLS_LOCAL (info, h))
5016 {
5017 struct ppc_elf_dyn_relocs **pp;
5018
5019 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 5020 {
25dbc73a
AM
5021 p->count -= p->pc_count;
5022 p->pc_count = 0;
5023 if (p->count == 0)
5024 *pp = p->next;
5025 else
5026 pp = &p->next;
252b5132 5027 }
25dbc73a 5028 }
252b5132 5029
3348747a
NS
5030 if (htab->is_vxworks)
5031 {
5032 struct ppc_elf_dyn_relocs **pp;
5033
5034 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5035 {
5036 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5037 *pp = p->next;
5038 else
5039 pp = &p->next;
5040 }
5041 }
5042
89200bf8
AM
5043 /* Discard relocs on undefined symbols that must be local. */
5044 if (eh->dyn_relocs != NULL
5045 && h->root.type == bfd_link_hash_undefined
5046 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5047 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5048 eh->dyn_relocs = NULL;
5049
25dbc73a
AM
5050 /* Also discard relocs on undefined weak syms with non-default
5051 visibility. */
cab87ef9
AM
5052 if (eh->dyn_relocs != NULL
5053 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 5054 {
dfbb6ac9
AM
5055 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5056 eh->dyn_relocs = NULL;
5057
5058 /* Make sure undefined weak symbols are output as a dynamic
5059 symbol in PIEs. */
5060 else if (h->dynindx == -1
5061 && !h->forced_local)
5062 {
5063 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5064 return FALSE;
5065 }
25dbc73a
AM
5066 }
5067 }
5068 else if (ELIMINATE_COPY_RELOCS)
5069 {
5070 /* For the non-shared case, discard space for relocs against
5071 symbols which turn out to need copy relocs or are not
5072 dynamic. */
7619e7c7 5073
25dbc73a 5074 if (!h->non_got_ref
25dbc73a
AM
5075 && !h->def_regular)
5076 {
5077 /* Make sure this symbol is output as a dynamic symbol.
5078 Undefined weak syms won't yet be marked as dynamic. */
5079 if (h->dynindx == -1
5080 && !h->forced_local)
5081 {
5082 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5083 return FALSE;
5084 }
7619e7c7 5085
25dbc73a
AM
5086 /* If that succeeded, we know we'll be keeping all the
5087 relocs. */
5088 if (h->dynindx != -1)
5089 goto keep;
5090 }
252b5132 5091
25dbc73a 5092 eh->dyn_relocs = NULL;
252b5132 5093
25dbc73a
AM
5094 keep: ;
5095 }
252b5132 5096
25dbc73a
AM
5097 /* Finally, allocate space. */
5098 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5099 {
5100 asection *sreloc = elf_section_data (p->sec)->sreloc;
5101 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5102 }
252b5132 5103
25dbc73a
AM
5104 return TRUE;
5105}
7619e7c7 5106
625af618
AM
5107/* Set DF_TEXTREL if we find any dynamic relocs that apply to
5108 read-only sections. */
7619e7c7 5109
25dbc73a 5110static bfd_boolean
625af618 5111maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 5112{
25dbc73a
AM
5113 if (h->root.type == bfd_link_hash_indirect)
5114 return TRUE;
252b5132 5115
25dbc73a
AM
5116 if (h->root.type == bfd_link_hash_warning)
5117 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5118
625af618 5119 if (readonly_dynrelocs (h))
25dbc73a 5120 {
625af618 5121 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 5122
625af618
AM
5123 /* Not an error, just cut short the traversal. */
5124 return FALSE;
25dbc73a
AM
5125 }
5126 return TRUE;
5127}
5128
5129/* Set the sizes of the dynamic sections. */
5130
5131static bfd_boolean
5132ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5133 struct bfd_link_info *info)
5134{
5135 struct ppc_elf_link_hash_table *htab;
5136 asection *s;
5137 bfd_boolean relocs;
5138 bfd *ibfd;
7fce784e 5139
252b5132 5140#ifdef DEBUG
25dbc73a 5141 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 5142#endif
252b5132 5143
25dbc73a
AM
5144 htab = ppc_elf_hash_table (info);
5145 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 5146
25dbc73a
AM
5147 if (elf_hash_table (info)->dynamic_sections_created)
5148 {
5149 /* Set the contents of the .interp section to the interpreter. */
5150 if (info->executable)
5151 {
5152 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5153 BFD_ASSERT (s != NULL);
5154 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5155 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5156 }
5157 }
252b5132 5158
4a3dc543 5159 if (htab->plt_type == PLT_OLD)
d7128ce4 5160 htab->got_header_size = 16;
4a3dc543 5161 else if (htab->plt_type == PLT_NEW)
d7128ce4 5162 htab->got_header_size = 12;
252b5132 5163
25dbc73a
AM
5164 /* Set up .got offsets for local syms, and space for local dynamic
5165 relocs. */
5166 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5167 {
5168 bfd_signed_vma *local_got;
5169 bfd_signed_vma *end_local_got;
5170 char *lgot_masks;
5171 bfd_size_type locsymcount;
5172 Elf_Internal_Shdr *symtab_hdr;
7fce784e 5173
0c8d6e5c 5174 if (!is_ppc_elf (ibfd))
25dbc73a 5175 continue;
7fce784e 5176
25dbc73a
AM
5177 for (s = ibfd->sections; s != NULL; s = s->next)
5178 {
5179 struct ppc_elf_dyn_relocs *p;
252b5132 5180
25dbc73a
AM
5181 for (p = ((struct ppc_elf_dyn_relocs *)
5182 elf_section_data (s)->local_dynrel);
5183 p != NULL;
5184 p = p->next)
5185 {
5186 if (!bfd_is_abs_section (p->sec)
5187 && bfd_is_abs_section (p->sec->output_section))
5188 {
5189 /* Input section has been discarded, either because
5190 it is a copy of a linkonce section or due to
5191 linker script /DISCARD/, so we'll be discarding
5192 the relocs too. */
7fce784e 5193 }
3348747a
NS
5194 else if (htab->is_vxworks
5195 && strcmp (p->sec->output_section->name,
5196 ".tls_vars") == 0)
5197 {
5198 /* Relocations in vxworks .tls_vars sections are
5199 handled specially by the loader. */
5200 }
25dbc73a 5201 else if (p->count != 0)
7fce784e 5202 {
25dbc73a
AM
5203 elf_section_data (p->sec)->sreloc->size
5204 += p->count * sizeof (Elf32_External_Rela);
5205 if ((p->sec->output_section->flags
5206 & (SEC_READONLY | SEC_ALLOC))
5207 == (SEC_READONLY | SEC_ALLOC))
5208 info->flags |= DF_TEXTREL;
7fce784e 5209 }
252b5132 5210 }
252b5132 5211 }
252b5132 5212
25dbc73a
AM
5213 local_got = elf_local_got_refcounts (ibfd);
5214 if (!local_got)
5215 continue;
252b5132 5216
0ffa91dd 5217 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
5218 locsymcount = symtab_hdr->sh_info;
5219 end_local_got = local_got + locsymcount;
5220 lgot_masks = (char *) end_local_got;
25dbc73a
AM
5221 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5222 if (*local_got > 0)
5223 {
5224 if (*lgot_masks == (TLS_TLS | TLS_LD))
5225 {
5226 /* If just an LD reloc, we'll just use
5227 htab->tlsld_got.offset. */
3b36f7e6 5228 htab->tlsld_got.refcount += 1;
25dbc73a
AM
5229 *local_got = (bfd_vma) -1;
5230 }
5231 else
5232 {
3b36f7e6 5233 unsigned int need = 0;
25dbc73a
AM
5234 if ((*lgot_masks & TLS_TLS) != 0)
5235 {
5236 if ((*lgot_masks & TLS_GD) != 0)
3b36f7e6 5237 need += 8;
25dbc73a 5238 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
3b36f7e6 5239 need += 4;
25dbc73a 5240 if ((*lgot_masks & TLS_DTPREL) != 0)
3b36f7e6 5241 need += 4;
25dbc73a
AM
5242 }
5243 else
3b36f7e6
AM
5244 need += 4;
5245 *local_got = allocate_got (htab, need);
25dbc73a 5246 if (info->shared)
3b36f7e6
AM
5247 htab->relgot->size += (need
5248 * (sizeof (Elf32_External_Rela) / 4));
25dbc73a
AM
5249 }
5250 }
5251 else
5252 *local_got = (bfd_vma) -1;
5253 }
252b5132 5254
b7fcf6f6
AM
5255 /* Allocate space for global sym dynamic relocs. */
5256 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5257
3b36f7e6
AM
5258 if (htab->tlsld_got.refcount > 0)
5259 {
5260 htab->tlsld_got.offset = allocate_got (htab, 8);
5261 if (info->shared)
5262 htab->relgot->size += sizeof (Elf32_External_Rela);
5263 }
5264 else
5265 htab->tlsld_got.offset = (bfd_vma) -1;
5266
4a3dc543 5267 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
5268 {
5269 unsigned int g_o_t = 32768;
5270
4d962050
AM
5271 /* If we haven't allocated the header, do so now. When we get here,
5272 for old plt/got the got size will be 0 to 32764 (not allocated),
5273 or 32780 to 65536 (header allocated). For new plt/got, the
5274 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM
5275 if (htab->got->size <= 32768)
5276 {
5277 g_o_t = htab->got->size;
4a3dc543 5278 if (htab->plt_type == PLT_OLD)
4d962050 5279 g_o_t += 4;
3b36f7e6
AM
5280 htab->got->size += htab->got_header_size;
5281 }
3b36f7e6
AM
5282
5283 htab->elf.hgot->root.u.def.value = g_o_t;
5284 }
5285
d7128ce4
AM
5286 if (htab->glink != NULL && htab->glink->size != 0)
5287 {
5288 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM
5289 /* Space for the branch table. */
5290 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5291 /* Pad out to align the start of PLTresolve. */
5292 htab->glink->size += -htab->glink->size & 15;
d7128ce4 5293 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910
AM
5294
5295 if (htab->emit_stub_syms)
5296 {
5297 struct elf_link_hash_entry *sh;
5298 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5299 TRUE, FALSE, FALSE);
5300 if (sh == NULL)
5301 return FALSE;
5302 if (sh->root.type == bfd_link_hash_new)
5303 {
5304 sh->root.type = bfd_link_hash_defined;
5305 sh->root.u.def.section = htab->glink;
5306 sh->root.u.def.value = htab->glink_pltresolve;
5307 sh->ref_regular = 1;
5308 sh->def_regular = 1;
5309 sh->ref_regular_nonweak = 1;
5310 sh->forced_local = 1;
5311 sh->non_elf = 0;
5312 }
5313 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5314 TRUE, FALSE, FALSE);
5315 if (sh == NULL)
5316 return FALSE;
5317 if (sh->root.type == bfd_link_hash_new)
5318 {
5319 sh->root.type = bfd_link_hash_defined;
5320 sh->root.u.def.section = htab->glink;
5321 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5322 sh->ref_regular = 1;
5323 sh->def_regular = 1;
5324 sh->ref_regular_nonweak = 1;
5325 sh->forced_local = 1;
5326 sh->non_elf = 0;
5327 }
5328 }
d7128ce4
AM
5329 }
5330
25dbc73a
AM
5331 /* We've now determined the sizes of the various dynamic sections.
5332 Allocate memory for them. */
5333 relocs = FALSE;
5334 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 5335 {
9d8504b1
PB
5336 bfd_boolean strip_section = TRUE;
5337
25dbc73a
AM
5338 if ((s->flags & SEC_LINKER_CREATED) == 0)
5339 continue;
252b5132 5340
25dbc73a 5341 if (s == htab->plt
d7128ce4 5342 || s == htab->glink
644285ef 5343 || s == htab->got
9d8504b1 5344 || s == htab->sgotplt
c456f082
AM
5345 || s == htab->sbss
5346 || s == htab->dynbss
5347 || s == htab->dynsbss)
25dbc73a 5348 {
9d8504b1
PB
5349 /* We'd like to strip these sections if they aren't needed, but if
5350 we've exported dynamic symbols from them we must leave them.
5351 It's too late to tell BFD to get rid of the symbols. */
7325306f 5352 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
9d8504b1 5353 strip_section = FALSE;
25dbc73a
AM
5354 /* Strip this section if we don't need it; see the
5355 comment below. */
5356 }
c9a2f333
AM
5357 else if (s == htab->sdata[0].section
5358 || s == htab->sdata[1].section)
25dbc73a 5359 {
c9a2f333 5360 /* Strip these too. */
25dbc73a 5361 }
0112cd26 5362 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
25dbc73a 5363 {
c456f082 5364 if (s->size != 0)
25dbc73a
AM
5365 {
5366 /* Remember whether there are any relocation sections. */
5367 relocs = TRUE;
252b5132 5368
25dbc73a
AM
5369 /* We use the reloc_count field as a counter if we need
5370 to copy relocs into the output file. */
5371 s->reloc_count = 0;
252b5132
RH
5372 }
5373 }
25dbc73a
AM
5374 else
5375 {
5376 /* It's not one of our sections, so don't allocate space. */
5377 continue;
5378 }
252b5132 5379
9d8504b1 5380 if (s->size == 0 && strip_section)
25dbc73a 5381 {
c456f082
AM
5382 /* If we don't need this section, strip it from the
5383 output file. This is mostly to handle .rela.bss and
5384 .rela.plt. We must create both sections in
5385 create_dynamic_sections, because they must be created
5386 before the linker maps input sections to output
5387 sections. The linker does that before
5388 adjust_dynamic_symbol is called, and it is that
5389 function which decides whether anything needs to go
5390 into these sections. */
8423293d 5391 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
5392 continue;
5393 }
7fce784e 5394
d7128ce4 5395 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
5396 continue;
5397
25dbc73a
AM
5398 /* Allocate memory for the section contents. */
5399 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5400 if (s->contents == NULL)
5401 return FALSE;
5402 }
252b5132 5403
25dbc73a 5404 if (htab->elf.dynamic_sections_created)
7619e7c7 5405 {
25dbc73a
AM
5406 /* Add some entries to the .dynamic section. We fill in the
5407 values later, in ppc_elf_finish_dynamic_sections, but we
5408 must add the entries now so that we get the correct size for
5409 the .dynamic section. The DT_DEBUG entry is filled in by the
5410 dynamic linker and used by the debugger. */
5411#define add_dynamic_entry(TAG, VAL) \
5412 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 5413
25dbc73a 5414 if (info->executable)
7619e7c7 5415 {
25dbc73a
AM
5416 if (!add_dynamic_entry (DT_DEBUG, 0))
5417 return FALSE;
7619e7c7
AM
5418 }
5419
25dbc73a 5420 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 5421 {
25dbc73a
AM
5422 if (!add_dynamic_entry (DT_PLTGOT, 0)
5423 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5424 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5425 || !add_dynamic_entry (DT_JMPREL, 0))
5426 return FALSE;
5427 }
7619e7c7 5428
d7128ce4
AM
5429 if (htab->glink != NULL && htab->glink->size != 0)
5430 {
1fe44d79 5431 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4
AM
5432 return FALSE;
5433 }
5434
25dbc73a
AM
5435 if (relocs)
5436 {
5437 if (!add_dynamic_entry (DT_RELA, 0)
5438 || !add_dynamic_entry (DT_RELASZ, 0)
5439 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5440 return FALSE;
5441 }
7619e7c7 5442
25dbc73a
AM
5443 /* If any dynamic relocs apply to a read-only section, then we
5444 need a DT_TEXTREL entry. */
5445 if ((info->flags & DF_TEXTREL) == 0)
625af618 5446 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 5447 info);
7619e7c7 5448
25dbc73a
AM
5449 if ((info->flags & DF_TEXTREL) != 0)
5450 {
5451 if (!add_dynamic_entry (DT_TEXTREL, 0))
5452 return FALSE;
7619e7c7 5453 }
7a2b07ff
NS
5454 if (htab->is_vxworks
5455 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5456 return FALSE;
5457 }
25dbc73a
AM
5458#undef add_dynamic_entry
5459
7619e7c7
AM
5460 return TRUE;
5461}
0eb4a168
AM
5462
5463/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5464
5465static bfd_boolean
5466ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5467{
5468 if (h->plt.plist != NULL
5469 && !h->def_regular
5470 && (!h->pointer_equality_needed
5471 || !h->ref_regular_nonweak))
5472 return FALSE;
5473
5474 return _bfd_elf_hash_symbol (h);
5475}
25dbc73a
AM
5476\f
5477#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5478
5479static const int shared_stub_entry[] =
5480 {
5481 0x7c0802a6, /* mflr 0 */
5482 0x429f0005, /* bcl 20, 31, .Lxxx */
5483 0x7d6802a6, /* mflr 11 */
5484 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5485 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5486 0x7c0803a6, /* mtlr 0 */
5487 0x7d6903a6, /* mtctr 11 */
5488 0x4e800420, /* bctr */
5489 };
5490
5491static const int stub_entry[] =
5492 {
5493 0x3d600000, /* lis 11,xxx@ha */
5494 0x396b0000, /* addi 11,11,xxx@l */
5495 0x7d6903a6, /* mtctr 11 */
5496 0x4e800420, /* bctr */
5497 };
5498
5499static bfd_boolean
5500ppc_elf_relax_section (bfd *abfd,
5501 asection *isec,
5502 struct bfd_link_info *link_info,
5503 bfd_boolean *again)
5504{
5505 struct one_fixup
5506 {
5507 struct one_fixup *next;
5508 asection *tsec;
5509 bfd_vma toff;
5510 bfd_vma trampoff;
5511 };
7619e7c7 5512
25dbc73a
AM
5513 Elf_Internal_Shdr *symtab_hdr;
5514 bfd_byte *contents = NULL;
5515 Elf_Internal_Sym *isymbuf = NULL;
5516 Elf_Internal_Rela *internal_relocs = NULL;
5517 Elf_Internal_Rela *irel, *irelend;
5518 struct one_fixup *fixups = NULL;
5519 bfd_boolean changed;
d7128ce4 5520 struct ppc_elf_link_hash_table *htab;
25dbc73a 5521 bfd_size_type trampoff;
a6aa5195 5522 asection *got2;
7619e7c7 5523
25dbc73a 5524 *again = FALSE;
7619e7c7 5525
c87b5a93
AM
5526 /* Nothing to do if there are no relocations, and no need to do
5527 anything with non-alloc sections. */
5528 if ((isec->flags & SEC_ALLOC) == 0
5529 || (isec->flags & SEC_RELOC) == 0
5530 || isec->reloc_count == 0)
25dbc73a 5531 return TRUE;
7619e7c7 5532
25dbc73a
AM
5533 trampoff = (isec->size + 3) & (bfd_vma) -4;
5534 /* Space for a branch around any trampolines. */
5535 trampoff += 4;
7619e7c7 5536
0ffa91dd 5537 symtab_hdr = &elf_symtab_hdr (abfd);
7619e7c7 5538
25dbc73a
AM
5539 /* Get a copy of the native relocations. */
5540 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5541 link_info->keep_memory);
5542 if (internal_relocs == NULL)
5543 goto error_return;
7619e7c7 5544
d7128ce4 5545 htab = ppc_elf_hash_table (link_info);
a6aa5195 5546 got2 = bfd_get_section_by_name (abfd, ".got2");
7619e7c7 5547
a6aa5195 5548 irelend = internal_relocs + isec->reloc_count;
25dbc73a 5549 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 5550 {
25dbc73a
AM
5551 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5552 bfd_vma symaddr, reladdr, toff, roff;
5553 asection *tsec;
5554 struct one_fixup *f;
5555 size_t insn_offset = 0;
5556 bfd_vma max_branch_offset, val;
5557 bfd_byte *hit_addr;
5558 unsigned long t0;
5559 unsigned char sym_type;
7619e7c7 5560
25dbc73a
AM
5561 switch (r_type)
5562 {
5563 case R_PPC_REL24:
5564 case R_PPC_LOCAL24PC:
5565 case R_PPC_PLTREL24:
5566 max_branch_offset = 1 << 25;
5567 break;
7619e7c7 5568
25dbc73a
AM
5569 case R_PPC_REL14:
5570 case R_PPC_REL14_BRTAKEN:
5571 case R_PPC_REL14_BRNTAKEN:
5572 max_branch_offset = 1 << 15;
5573 break;
7619e7c7 5574
25dbc73a
AM
5575 default:
5576 continue;
5577 }
7619e7c7 5578
25dbc73a
AM
5579 /* Get the value of the symbol referred to by the reloc. */
5580 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5581 {
5582 /* A local symbol. */
5583 Elf_Internal_Sym *isym;
7fce784e 5584
25dbc73a
AM
5585 /* Read this BFD's local symbols. */
5586 if (isymbuf == NULL)
5587 {
5588 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5589 if (isymbuf == NULL)
5590 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5591 symtab_hdr->sh_info, 0,
5592 NULL, NULL, NULL);
5593 if (isymbuf == 0)
5594 goto error_return;
5595 }
5596 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5597 if (isym->st_shndx == SHN_UNDEF)
5598 continue; /* We can't do anything with undefined symbols. */
5599 else if (isym->st_shndx == SHN_ABS)
5600 tsec = bfd_abs_section_ptr;
5601 else if (isym->st_shndx == SHN_COMMON)
5602 tsec = bfd_com_section_ptr;
5603 else
5604 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 5605
25dbc73a
AM
5606 toff = isym->st_value;
5607 sym_type = ELF_ST_TYPE (isym->st_info);
5608 }
5609 else
5610 {
5611 /* Global symbol handling. */
5612 unsigned long indx;
5613 struct elf_link_hash_entry *h;
7619e7c7 5614
25dbc73a
AM
5615 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5616 h = elf_sym_hashes (abfd)[indx];
7619e7c7 5617
25dbc73a
AM
5618 while (h->root.type == bfd_link_hash_indirect
5619 || h->root.type == bfd_link_hash_warning)
5620 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5621
a6aa5195
AM
5622 tsec = NULL;
5623 toff = 0;
25dbc73a 5624 if (r_type == R_PPC_PLTREL24
a6aa5195 5625 && htab->plt != NULL)
25dbc73a 5626 {
a6aa5195
AM
5627 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5628
5629 if (ent != NULL)
d7128ce4 5630 {
4a3dc543 5631 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
5632 {
5633 tsec = htab->glink;
5634 toff = ent->glink_offset;
5635 }
5636 else
5637 {
5638 tsec = htab->plt;
5639 toff = ent->plt.offset;
5640 }
d7128ce4 5641 }
25dbc73a 5642 }
a6aa5195
AM
5643 if (tsec != NULL)
5644 ;
25dbc73a
AM
5645 else if (h->root.type == bfd_link_hash_defined
5646 || h->root.type == bfd_link_hash_defweak)
5647 {
5648 tsec = h->root.u.def.section;
5649 toff = h->root.u.def.value;
5650 }
5651 else
5652 continue;
7619e7c7 5653
25dbc73a
AM
5654 sym_type = h->type;
5655 }
7619e7c7 5656
25dbc73a
AM
5657 /* If the branch and target are in the same section, you have
5658 no hope of adding stubs. We'll error out later should the
5659 branch overflow. */
5660 if (tsec == isec)
5661 continue;
5662
5663 /* There probably isn't any reason to handle symbols in
5664 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5665 attribute for a code section, and we are only looking at
5666 branches. However, implement it correctly here as a
5667 reference for other target relax_section functions. */
5668 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5669 {
5670 /* At this stage in linking, no SEC_MERGE symbol has been
5671 adjusted, so all references to such symbols need to be
5672 passed through _bfd_merged_section_offset. (Later, in
5673 relocate_section, all SEC_MERGE symbols *except* for
5674 section symbols have been adjusted.)
5675
5676 gas may reduce relocations against symbols in SEC_MERGE
5677 sections to a relocation against the section symbol when
5678 the original addend was zero. When the reloc is against
5679 a section symbol we should include the addend in the
5680 offset passed to _bfd_merged_section_offset, since the
5681 location of interest is the original symbol. On the
5682 other hand, an access to "sym+addend" where "sym" is not
5683 a section symbol should not include the addend; Such an
5684 access is presumed to be an offset from "sym"; The
5685 location of interest is just "sym". */
5686 if (sym_type == STT_SECTION)
5687 toff += irel->r_addend;
7619e7c7 5688
25dbc73a
AM
5689 toff = _bfd_merged_section_offset (abfd, &tsec,
5690 elf_section_data (tsec)->sec_info,
5691 toff);
7619e7c7 5692
25dbc73a
AM
5693 if (sym_type != STT_SECTION)
5694 toff += irel->r_addend;
5695 }
a6aa5195
AM
5696 /* PLTREL24 addends are special. */
5697 else if (r_type != R_PPC_PLTREL24)
25dbc73a 5698 toff += irel->r_addend;
7619e7c7 5699
7de713b9
AM
5700 /* Attempted -shared link of non-pic code loses. */
5701 if (tsec->output_section == NULL)
5702 continue;
5703
25dbc73a 5704 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7619e7c7 5705
25dbc73a
AM
5706 roff = irel->r_offset;
5707 reladdr = isec->output_section->vma + isec->output_offset + roff;
7619e7c7 5708
25dbc73a
AM
5709 /* If the branch is in range, no need to do anything. */
5710 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5711 continue;
252b5132 5712
25dbc73a
AM
5713 /* Look for an existing fixup to this address. */
5714 for (f = fixups; f ; f = f->next)
5715 if (f->tsec == tsec && f->toff == toff)
5716 break;
5717
5718 if (f == NULL)
7619e7c7 5719 {
25dbc73a
AM
5720 size_t size;
5721 unsigned long stub_rtype;
252b5132 5722
25dbc73a
AM
5723 val = trampoff - roff;
5724 if (val >= max_branch_offset)
5725 /* Oh dear, we can't reach a trampoline. Don't try to add
5726 one. We'll report an error later. */
5727 continue;
252b5132 5728
25dbc73a
AM
5729 if (link_info->shared)
5730 {
5731 size = 4 * ARRAY_SIZE (shared_stub_entry);
5732 insn_offset = 12;
5733 stub_rtype = R_PPC_RELAX32PC;
5734 }
5735 else
5736 {
5737 size = 4 * ARRAY_SIZE (stub_entry);
5738 insn_offset = 0;
5739 stub_rtype = R_PPC_RELAX32;
5740 }
dc810e39 5741
25dbc73a
AM
5742 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5743 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5744 abort ();
d7128ce4
AM
5745 if (tsec == htab->plt
5746 || tsec == htab->glink)
25dbc73a 5747 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
252b5132 5748
25dbc73a
AM
5749 /* Hijack the old relocation. Since we need two
5750 relocations for this use a "composite" reloc. */
5751 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5752 stub_rtype);
5753 irel->r_offset = trampoff + insn_offset;
252b5132 5754
25dbc73a
AM
5755 /* Record the fixup so we don't do it again this section. */
5756 f = bfd_malloc (sizeof (*f));
5757 f->next = fixups;
5758 f->tsec = tsec;
5759 f->toff = toff;
5760 f->trampoff = trampoff;
5761 fixups = f;
252b5132 5762
25dbc73a
AM
5763 trampoff += size;
5764 }
5765 else
5766 {
5767 val = f->trampoff - roff;
5768 if (val >= max_branch_offset)
5769 continue;
252b5132 5770
25dbc73a
AM
5771 /* Nop out the reloc, since we're finalizing things here. */
5772 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5773 }
252b5132 5774
25dbc73a
AM
5775 /* Get the section contents. */
5776 if (contents == NULL)
5777 {
5778 /* Get cached copy if it exists. */
5779 if (elf_section_data (isec)->this_hdr.contents != NULL)
5780 contents = elf_section_data (isec)->this_hdr.contents;
5781 else
5782 {
5783 /* Go get them off disk. */
5784 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5785 goto error_return;
5786 }
5787 }
252b5132 5788
25dbc73a
AM
5789 /* Fix up the existing branch to hit the trampoline. */
5790 hit_addr = contents + roff;
5791 switch (r_type)
5792 {
5793 case R_PPC_REL24:
5794 case R_PPC_LOCAL24PC:
5795 case R_PPC_PLTREL24:
5796 t0 = bfd_get_32 (abfd, hit_addr);
5797 t0 &= ~0x3fffffc;
5798 t0 |= val & 0x3fffffc;
5799 bfd_put_32 (abfd, t0, hit_addr);
5800 break;
252b5132 5801
25dbc73a
AM
5802 case R_PPC_REL14:
5803 case R_PPC_REL14_BRTAKEN:
5804 case R_PPC_REL14_BRNTAKEN:
5805 t0 = bfd_get_32 (abfd, hit_addr);
5806 t0 &= ~0xfffc;
5807 t0 |= val & 0xfffc;
5808 bfd_put_32 (abfd, t0, hit_addr);
5809 break;
5810 }
5811 }
252b5132 5812
25dbc73a
AM
5813 /* Write out the trampolines. */
5814 changed = fixups != NULL;
5815 if (fixups != NULL)
5816 {
5817 const int *stub;
5818 bfd_byte *dest;
5819 bfd_vma val;
5820 int i, size;
252b5132 5821
25dbc73a
AM
5822 do
5823 {
5824 struct one_fixup *f = fixups;
5825 fixups = fixups->next;
5826 free (f);
5827 }
5828 while (fixups);
252b5132 5829
515ef31d 5830 contents = bfd_realloc_or_free (contents, trampoff);
25dbc73a
AM
5831 if (contents == NULL)
5832 goto error_return;
252b5132 5833
25dbc73a
AM
5834 isec->size = (isec->size + 3) & (bfd_vma) -4;
5835 /* Branch around the trampolines. */
5836 val = trampoff - isec->size + 0x48000000;
5837 dest = contents + isec->size;
5838 isec->size = trampoff;
5839 bfd_put_32 (abfd, val, dest);
5840 dest += 4;
252b5132 5841
25dbc73a
AM
5842 if (link_info->shared)
5843 {
5844 stub = shared_stub_entry;
5845 size = ARRAY_SIZE (shared_stub_entry);
5846 }
5847 else
5848 {
5849 stub = stub_entry;
5850 size = ARRAY_SIZE (stub_entry);
5851 }
252b5132 5852
25dbc73a
AM
5853 i = 0;
5854 while (dest < contents + trampoff)
252b5132 5855 {
25dbc73a
AM
5856 bfd_put_32 (abfd, stub[i], dest);
5857 i++;
5858 if (i == size)
5859 i = 0;
5860 dest += 4;
252b5132 5861 }
25dbc73a 5862 BFD_ASSERT (i == 0);
252b5132
RH
5863 }
5864
25dbc73a
AM
5865 if (isymbuf != NULL
5866 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 5867 {
25dbc73a
AM
5868 if (! link_info->keep_memory)
5869 free (isymbuf);
252b5132 5870 else
25dbc73a
AM
5871 {
5872 /* Cache the symbols for elf_link_input_bfd. */
5873 symtab_hdr->contents = (unsigned char *) isymbuf;
5874 }
252b5132
RH
5875 }
5876
25dbc73a
AM
5877 if (contents != NULL
5878 && elf_section_data (isec)->this_hdr.contents != contents)
5879 {
5880 if (!changed && !link_info->keep_memory)
5881 free (contents);
5882 else
5883 {
5884 /* Cache the section contents for elf_link_input_bfd. */
5885 elf_section_data (isec)->this_hdr.contents = contents;
5886 }
5887 }
252b5132 5888
25dbc73a
AM
5889 if (elf_section_data (isec)->relocs != internal_relocs)
5890 {
5891 if (!changed)
5892 free (internal_relocs);
5893 else
5894 elf_section_data (isec)->relocs = internal_relocs;
5895 }
252b5132 5896
25dbc73a 5897 *again = changed;
b34976b6 5898 return TRUE;
25dbc73a
AM
5899
5900 error_return:
5901 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5902 free (isymbuf);
5903 if (contents != NULL
5904 && elf_section_data (isec)->this_hdr.contents != contents)
5905 free (contents);
5906 if (internal_relocs != NULL
5907 && elf_section_data (isec)->relocs != internal_relocs)
5908 free (internal_relocs);
5909 return FALSE;
252b5132 5910}
252b5132 5911\f
8a696751
AM
5912/* What to do when ld finds relocations against symbols defined in
5913 discarded sections. */
5914
5915static unsigned int
5916ppc_elf_action_discarded (asection *sec)
5917{
5918 if (strcmp (".fixup", sec->name) == 0)
5919 return 0;
5920
5921 if (strcmp (".got2", sec->name) == 0)
5922 return 0;
5923
5924 return _bfd_elf_default_action_discarded (sec);
5925}
c9a2f333 5926\f
25dbc73a 5927/* Fill in the address for a pointer generated in a linker section. */
252b5132 5928
25dbc73a 5929static bfd_vma
76750a2f 5930elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
5931 elf_linker_section_t *lsect,
5932 struct elf_link_hash_entry *h,
5933 bfd_vma relocation,
2bb04cf2 5934 const Elf_Internal_Rela *rel)
25dbc73a
AM
5935{
5936 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 5937
25dbc73a 5938 BFD_ASSERT (lsect != NULL);
252b5132 5939
25dbc73a 5940 if (h != NULL)
252b5132 5941 {
25dbc73a
AM
5942 /* Handle global symbol. */
5943 struct ppc_elf_link_hash_entry *eh;
252b5132 5944
25dbc73a 5945 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
5946 BFD_ASSERT (eh->elf.def_regular);
5947 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
5948 }
5949 else
5950 {
5951 /* Handle local symbol. */
5952 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 5953
0c8d6e5c 5954 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 5955 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
5956 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5957 }
252b5132 5958
76750a2f
AM
5959 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5960 rel->r_addend,
5961 lsect);
5962 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 5963
76750a2f
AM
5964 /* Offset will always be a multiple of four, so use the bottom bit
5965 as a "written" flag. */
5966 if ((linker_section_ptr->offset & 1) == 0)
5967 {
5968 bfd_put_32 (lsect->section->owner,
5969 relocation + linker_section_ptr->addend,
5970 lsect->section->contents + linker_section_ptr->offset);
5971 linker_section_ptr->offset += 1;
252b5132
RH
5972 }
5973
25dbc73a 5974 relocation = (lsect->section->output_offset
76750a2f 5975 + linker_section_ptr->offset - 1
c9a2f333 5976 - 0x8000);
252b5132 5977
25dbc73a
AM
5978#ifdef DEBUG
5979 fprintf (stderr,
5980 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5981 lsect->name, (long) relocation, (long) relocation);
5982#endif
252b5132 5983
25dbc73a
AM
5984 /* Subtract out the addend, because it will get added back in by the normal
5985 processing. */
5986 return relocation - linker_section_ptr->addend;
252b5132 5987}
25dbc73a 5988
252b5132
RH
5989/* The RELOCATE_SECTION function is called by the ELF backend linker
5990 to handle the relocations for a section.
5991
5992 The relocs are always passed as Rela structures; if the section
5993 actually uses Rel structures, the r_addend field will always be
5994 zero.
5995
5996 This function is responsible for adjust the section contents as
5997 necessary, and (if using Rela relocs and generating a
1049f94e 5998 relocatable output file) adjusting the reloc addend as
252b5132
RH
5999 necessary.
6000
6001 This function does not have to worry about setting the reloc
6002 address or the reloc symbol index.
6003
6004 LOCAL_SYMS is a pointer to the swapped in local symbols.
6005
6006 LOCAL_SECTIONS is an array giving the section in the input file
6007 corresponding to the st_shndx field of each local symbol.
6008
6009 The global hash table entry for the global symbols can be found
6010 via elf_sym_hashes (input_bfd).
6011
1049f94e 6012 When generating relocatable output, this function must handle
252b5132
RH
6013 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6014 going to be the section symbol corresponding to the output
6015 section, which means that the addend must be adjusted
6016 accordingly. */
6017
b34976b6 6018static bfd_boolean
55fd94b0
AM
6019ppc_elf_relocate_section (bfd *output_bfd,
6020 struct bfd_link_info *info,
6021 bfd *input_bfd,
6022 asection *input_section,
6023 bfd_byte *contents,
6024 Elf_Internal_Rela *relocs,
6025 Elf_Internal_Sym *local_syms,
6026 asection **local_sections)
252b5132 6027{
7619e7c7
AM
6028 Elf_Internal_Shdr *symtab_hdr;
6029 struct elf_link_hash_entry **sym_hashes;
6030 struct ppc_elf_link_hash_table *htab;
6031 Elf_Internal_Rela *rel;
6032 Elf_Internal_Rela *relend;
6033 Elf_Internal_Rela outrel;
6034 bfd_byte *loc;
a6aa5195 6035 asection *got2, *sreloc = NULL;
252b5132 6036 bfd_vma *local_got_offsets;
b34976b6 6037 bfd_boolean ret = TRUE;
4fe5ca5b 6038 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 6039 bfd_boolean is_vxworks_tls;
b34976b6 6040
252b5132 6041#ifdef DEBUG
d003868e
AM
6042 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6043 "%ld relocations%s",
6044 input_bfd, input_section,
6045 (long) input_section->reloc_count,
6046 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH
6047#endif
6048
a6aa5195
AM
6049 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6050
e47cd125 6051 /* Initialize howto table if not already done. */
8da6118f 6052 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
6053 ppc_elf_howto_init ();
6054
7619e7c7 6055 htab = ppc_elf_hash_table (info);
252b5132 6056 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 6057 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 6058 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
6059 /* We have to handle relocations in vxworks .tls_vars sections
6060 specially, because the dynamic loader is 'weird'. */
6061 is_vxworks_tls = (htab->is_vxworks && info->shared
6062 && !strcmp (input_section->output_section->name,
6063 ".tls_vars"));
7619e7c7
AM
6064 rel = relocs;
6065 relend = relocs + input_section->reloc_count;
252b5132
RH
6066 for (; rel < relend; rel++)
6067 {
7619e7c7
AM
6068 enum elf_ppc_reloc_type r_type;
6069 bfd_vma addend;
6070 bfd_reloc_status_type r;
6071 Elf_Internal_Sym *sym;
6072 asection *sec;
6073 struct elf_link_hash_entry *h;
6074 const char *sym_name;
252b5132
RH
6075 reloc_howto_type *howto;
6076 unsigned long r_symndx;
6077 bfd_vma relocation;
7619e7c7 6078 bfd_vma branch_bit, insn, from;
7619e7c7
AM
6079 bfd_boolean unresolved_reloc;
6080 bfd_boolean warned;
6081 unsigned int tls_type, tls_mask, tls_gd;
6082
55fd94b0
AM
6083 r_type = ELF32_R_TYPE (rel->r_info);
6084 sym = NULL;
6085 sec = NULL;
6086 h = NULL;
7619e7c7
AM
6087 unresolved_reloc = FALSE;
6088 warned = FALSE;
252b5132 6089 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 6090
252b5132
RH
6091 if (r_symndx < symtab_hdr->sh_info)
6092 {
6093 sym = local_syms + r_symndx;
6094 sec = local_sections[r_symndx];
26c61ae5 6095 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 6096
8517fae7 6097 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
6098 }
6099 else
6100 {
b2a8e766
AM
6101 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6102 r_symndx, symtab_hdr, sym_hashes,
6103 h, sec, relocation,
6104 unresolved_reloc, warned);
9abc968f 6105
252b5132 6106 sym_name = h->root.root.string;
7619e7c7
AM
6107 }
6108
ab96bf03
AM
6109 if (sec != NULL && elf_discarded_section (sec))
6110 {
6111 /* For relocs against symbols from removed linkonce sections,
6112 or sections discarded by a linker script, we just want the
6113 section contents zeroed. Avoid any special processing. */
6114 howto = NULL;
6115 if (r_type < R_PPC_max)
6116 howto = ppc_elf_howto_table[r_type];
6117 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6118 rel->r_info = 0;
6119 rel->r_addend = 0;
6120 continue;
6121 }
6122
6123 if (info->relocatable)
6124 {
6125 if (got2 != NULL
6126 && r_type == R_PPC_PLTREL24
6127 && rel->r_addend >= 32768)
6128 {
6129 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6130 addend specifies the GOT pointer offset within .got2. */
6131 rel->r_addend += got2->output_offset;
6132 }
6133 continue;
6134 }
6135
7619e7c7
AM
6136 /* TLS optimizations. Replace instruction sequences and relocs
6137 based on information we collected in tls_optimize. We edit
6138 RELOCS so that --emit-relocs will output something sensible
6139 for the final instruction stream. */
6140 tls_mask = 0;
6141 tls_gd = 0;
6142 if (IS_PPC_TLS_RELOC (r_type))
6143 {
6144 if (h != NULL)
6145 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6146 else if (local_got_offsets != NULL)
6147 {
6148 char *lgot_masks;
6149 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
6150 tls_mask = lgot_masks[r_symndx];
6151 }
6152 }
6153
6154 /* Ensure reloc mapping code below stays sane. */
6155 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6156 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6157 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6158 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6159 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6160 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6161 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6162 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6163 abort ();
6164 switch (r_type)
6165 {
6166 default:
6167 break;
6168
6169 case R_PPC_GOT_TPREL16:
6170 case R_PPC_GOT_TPREL16_LO:
6171 if (tls_mask != 0
6172 && (tls_mask & TLS_TPREL) == 0)
6173 {
6174 bfd_vma insn;
4fe5ca5b 6175 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7619e7c7
AM
6176 insn &= 31 << 21;
6177 insn |= 0x3c020000; /* addis 0,2,0 */
4fe5ca5b 6178 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7619e7c7
AM
6179 r_type = R_PPC_TPREL16_HA;
6180 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6181 }
6182 break;
6183
6184 case R_PPC_TLS:
6185 if (tls_mask != 0
6186 && (tls_mask & TLS_TPREL) == 0)
6187 {
6188 bfd_vma insn, rtra;
6189 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6190 if ((insn & ((31 << 26) | (31 << 11)))
6191 == ((31 << 26) | (2 << 11)))
6192 rtra = insn & ((1 << 26) - (1 << 16));
6193 else if ((insn & ((31 << 26) | (31 << 16)))
6194 == ((31 << 26) | (2 << 16)))
6195 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6196 else
6197 abort ();
6198 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6199 /* add -> addi. */
6200 insn = 14 << 26;
6201 else if ((insn & (31 << 1)) == 23 << 1
6202 && ((insn & (31 << 6)) < 14 << 6
6203 || ((insn & (31 << 6)) >= 16 << 6
6204 && (insn & (31 << 6)) < 24 << 6)))
6205 /* load and store indexed -> dform. */
6206 insn = (32 | ((insn >> 6) & 31)) << 26;
6207 else if ((insn & (31 << 1)) == 21 << 1
6208 && (insn & (0x1a << 6)) == 0)
6209 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6210 insn = (((58 | ((insn >> 6) & 4)) << 26)
6211 | ((insn >> 6) & 1));
6212 else if ((insn & (31 << 1)) == 21 << 1
6213 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6214 /* lwax -> lwa. */
6215 insn = (58 << 26) | 2;
6216 else
6217 abort ();
6218 insn |= rtra;
6219 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6220 r_type = R_PPC_TPREL16_LO;
6221 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 6222
7619e7c7 6223 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
6224 PPC_TPREL16_LO which is at low-order half-word. */
6225 rel->r_offset += d_offset;
7619e7c7
AM
6226 }
6227 break;
6228
6229 case R_PPC_GOT_TLSGD16_HI:
6230 case R_PPC_GOT_TLSGD16_HA:
6231 tls_gd = TLS_TPRELGD;
6232 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6233 goto tls_gdld_hi;
6234 break;
6235
6236 case R_PPC_GOT_TLSLD16_HI:
6237 case R_PPC_GOT_TLSLD16_HA:
6238 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6239 {
6240 tls_gdld_hi:
6241 if ((tls_mask & tls_gd) != 0)
6242 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6243 + R_PPC_GOT_TPREL16);
6244 else
6245 {
6246 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 6247 rel->r_offset -= d_offset;
7619e7c7
AM
6248 r_type = R_PPC_NONE;
6249 }
6250 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6251 }
6252 break;
6253
6254 case R_PPC_GOT_TLSGD16:
6255 case R_PPC_GOT_TLSGD16_LO:
6256 tls_gd = TLS_TPRELGD;
6257 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 6258 goto tls_ldgd_opt;
7619e7c7
AM
6259 break;
6260
6261 case R_PPC_GOT_TLSLD16:
6262 case R_PPC_GOT_TLSLD16_LO:
6263 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6264 {
b7fcf6f6
AM
6265 bfd_vma insn1, insn2;
6266 bfd_vma offset;
7619e7c7 6267
b7fcf6f6
AM
6268 tls_ldgd_opt:
6269 offset = rel[1].r_offset;
6270 insn1 = bfd_get_32 (output_bfd,
6271 contents + rel->r_offset - d_offset);
6272 if ((tls_mask & tls_gd) != 0)
6273 {
6274 /* IE */
6275 insn1 &= (1 << 26) - 1;
6276 insn1 |= 32 << 26; /* lwz */
6277 insn2 = 0x7c631214; /* add 3,3,2 */
6278 rel[1].r_info
6279 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info), R_PPC_NONE);
6280 rel[1].r_addend = 0;
6281 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6282 + R_PPC_GOT_TPREL16);
6283 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6284 }
6285 else
6286 {
6287 /* LE */
6288 insn1 = 0x3c620000; /* addis 3,2,0 */
6289 insn2 = 0x38630000; /* addi 3,3,0 */
7619e7c7
AM
6290 if (tls_gd == 0)
6291 {
b7fcf6f6 6292 /* Was an LD reloc. */
1d483afe
AM
6293 for (r_symndx = 0;
6294 r_symndx < symtab_hdr->sh_info;
6295 r_symndx++)
6296 if (local_sections[r_symndx] == sec)
6297 break;
6298 if (r_symndx >= symtab_hdr->sh_info)
6299 r_symndx = 0;
b7fcf6f6 6300 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
1d483afe
AM
6301 if (r_symndx != 0)
6302 rel->r_addend -= (local_syms[r_symndx].st_value
6303 + sec->output_offset
6304 + sec->output_section->vma);
7619e7c7 6305 }
b7fcf6f6
AM
6306 r_type = R_PPC_TPREL16_HA;
6307 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6308 rel[1].r_info = ELF32_R_INFO (r_symndx,
6309 R_PPC_TPREL16_LO);
6310 rel[1].r_offset += d_offset;
6311 rel[1].r_addend = rel->r_addend;
6312 }
6313 bfd_put_32 (output_bfd, insn1,
6314 contents + rel->r_offset - d_offset);
6315 bfd_put_32 (output_bfd, insn2, contents + offset);
6316 if (tls_gd == 0)
6317 {
6318 /* We changed the symbol on an LD reloc. Start over
6319 in order to get h, sym, sec etc. right. */
6320 rel--;
6321 continue;
7619e7c7 6322 }
252b5132 6323 }
7619e7c7
AM
6324 break;
6325 }
6326
6327 /* Handle other relocations that tweak non-addend part of insn. */
6328 branch_bit = 0;
6329 switch (r_type)
6330 {
6331 default:
6332 break;
6333
6334 /* Branch taken prediction relocations. */
6335 case R_PPC_ADDR14_BRTAKEN:
6336 case R_PPC_REL14_BRTAKEN:
6337 branch_bit = BRANCH_PREDICT_BIT;
6338 /* Fall thru */
6339
4cc11e76 6340 /* Branch not taken prediction relocations. */
7619e7c7
AM
6341 case R_PPC_ADDR14_BRNTAKEN:
6342 case R_PPC_REL14_BRNTAKEN:
6343 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6344 insn &= ~BRANCH_PREDICT_BIT;
6345 insn |= branch_bit;
6346
6347 from = (rel->r_offset
6348 + input_section->output_offset
6349 + input_section->output_section->vma);
6350
6351 /* Invert 'y' bit if not the default. */
6352 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6353 insn ^= BRANCH_PREDICT_BIT;
6354
6355 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6356 break;
252b5132
RH
6357 }
6358
7619e7c7
AM
6359 addend = rel->r_addend;
6360 tls_type = 0;
6361 howto = NULL;
55fd94b0
AM
6362 if (r_type < R_PPC_max)
6363 howto = ppc_elf_howto_table[r_type];
7619e7c7 6364 switch (r_type)
252b5132
RH
6365 {
6366 default:
7619e7c7 6367 (*_bfd_error_handler)
d003868e
AM
6368 (_("%B: unknown relocation type %d for symbol %s"),
6369 input_bfd, (int) r_type, sym_name);
252b5132
RH
6370
6371 bfd_set_error (bfd_error_bad_value);
b34976b6 6372 ret = FALSE;
252b5132
RH
6373 continue;
6374
7619e7c7
AM
6375 case R_PPC_NONE:
6376 case R_PPC_TLS:
6377 case R_PPC_EMB_MRKREF:
6378 case R_PPC_GNU_VTINHERIT:
6379 case R_PPC_GNU_VTENTRY:
7595d193
L
6380 continue;
6381
7619e7c7
AM
6382 /* GOT16 relocations. Like an ADDR16 using the symbol's
6383 address in the GOT as relocation value instead of the
6384 symbol's value itself. Also, create a GOT entry for the
6385 symbol and put the symbol value there. */
6386 case R_PPC_GOT_TLSGD16:
6387 case R_PPC_GOT_TLSGD16_LO:
6388 case R_PPC_GOT_TLSGD16_HI:
6389 case R_PPC_GOT_TLSGD16_HA:
6390 tls_type = TLS_TLS | TLS_GD;
6391 goto dogot;
6392
6393 case R_PPC_GOT_TLSLD16:
6394 case R_PPC_GOT_TLSLD16_LO:
6395 case R_PPC_GOT_TLSLD16_HI:
6396 case R_PPC_GOT_TLSLD16_HA:
6397 tls_type = TLS_TLS | TLS_LD;
6398 goto dogot;
6399
6400 case R_PPC_GOT_TPREL16:
6401 case R_PPC_GOT_TPREL16_LO:
6402 case R_PPC_GOT_TPREL16_HI:
6403 case R_PPC_GOT_TPREL16_HA:
6404 tls_type = TLS_TLS | TLS_TPREL;
6405 goto dogot;
6406
6407 case R_PPC_GOT_DTPREL16:
6408 case R_PPC_GOT_DTPREL16_LO:
6409 case R_PPC_GOT_DTPREL16_HI:
6410 case R_PPC_GOT_DTPREL16_HA:
6411 tls_type = TLS_TLS | TLS_DTPREL;
6412 goto dogot;
6413
6414 case R_PPC_GOT16:
6415 case R_PPC_GOT16_LO:
6416 case R_PPC_GOT16_HI:
6417 case R_PPC_GOT16_HA:
6418 dogot:
6419 {
6420 /* Relocation is to the entry for this symbol in the global
6421 offset table. */
6422 bfd_vma off;
6423 bfd_vma *offp;
6424 unsigned long indx;
6425
6426 if (htab->got == NULL)
6427 abort ();
6428
6429 indx = 0;
6430 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 6431 && (h == NULL
f5385ebf 6432 || !h->def_dynamic))
7619e7c7
AM
6433 offp = &htab->tlsld_got.offset;
6434 else if (h != NULL)
6435 {
6436 bfd_boolean dyn;
6437 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 6438 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM
6439 || (info->shared
6440 && SYMBOL_REFERENCES_LOCAL (info, h)))
6441 /* This is actually a static link, or it is a
6442 -Bsymbolic link and the symbol is defined
6443 locally, or the symbol was forced to be local
6444 because of a version file. */
6445 ;
6446 else
6447 {
6448 indx = h->dynindx;
6449 unresolved_reloc = FALSE;
6450 }
6451 offp = &h->got.offset;
6452 }
6453 else
6454 {
6455 if (local_got_offsets == NULL)
6456 abort ();
6457 offp = &local_got_offsets[r_symndx];
6458 }
6459
6460 /* The offset must always be a multiple of 4. We use the
6461 least significant bit to record whether we have already
6462 processed this entry. */
6463 off = *offp;
6464 if ((off & 1) != 0)
6465 off &= ~1;
6466 else
6467 {
70bccea4
AM
6468 unsigned int tls_m = (tls_mask
6469 & (TLS_LD | TLS_GD | TLS_DTPREL
6470 | TLS_TPREL | TLS_TPRELGD));
6471
6472 if (offp == &htab->tlsld_got.offset)
6473 tls_m = TLS_LD;
6474 else if (h == NULL
f5385ebf 6475 || !h->def_dynamic)
70bccea4
AM
6476 tls_m &= ~TLS_LD;
6477
6478 /* We might have multiple got entries for this sym.
6479 Initialize them all. */
6480 do
7619e7c7 6481 {
70bccea4
AM
6482 int tls_ty = 0;
6483
6484 if ((tls_m & TLS_LD) != 0)
7619e7c7 6485 {
70bccea4
AM
6486 tls_ty = TLS_TLS | TLS_LD;
6487 tls_m &= ~TLS_LD;
6488 }
6489 else if ((tls_m & TLS_GD) != 0)
6490 {
6491 tls_ty = TLS_TLS | TLS_GD;
6492 tls_m &= ~TLS_GD;
6493 }
6494 else if ((tls_m & TLS_DTPREL) != 0)
6495 {
6496 tls_ty = TLS_TLS | TLS_DTPREL;
6497 tls_m &= ~TLS_DTPREL;
6498 }
6499 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6500 {
6501 tls_ty = TLS_TLS | TLS_TPREL;
6502 tls_m = 0;
7619e7c7 6503 }
7619e7c7 6504
70bccea4 6505 /* Generate relocs for the dynamic linker. */
4e795f50
AM
6506 if ((info->shared || indx != 0)
6507 && (h == NULL
6508 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6509 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 6510 {
70bccea4
AM
6511 outrel.r_offset = (htab->got->output_section->vma
6512 + htab->got->output_offset
6513 + off);
e515b051 6514 outrel.r_addend = 0;
70bccea4
AM
6515 if (tls_ty & (TLS_LD | TLS_GD))
6516 {
6517 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
6518 if (tls_ty == (TLS_TLS | TLS_GD))
6519 {
6520 loc = htab->relgot->contents;
6521 loc += (htab->relgot->reloc_count++
6522 * sizeof (Elf32_External_Rela));
6523 bfd_elf32_swap_reloca_out (output_bfd,
6524 &outrel, loc);
e515b051 6525 outrel.r_offset += 4;
70bccea4
AM
6526 outrel.r_info
6527 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
6528 }
6529 }
6530 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6531 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6532 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6533 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6534 else if (indx == 0)
6535 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6536 else
6537 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
70bccea4 6538 if (indx == 0)
e515b051
AM
6539 {
6540 outrel.r_addend += relocation;
6541 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 6542 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 6543 }
70bccea4
AM
6544 loc = htab->relgot->contents;
6545 loc += (htab->relgot->reloc_count++
6546 * sizeof (Elf32_External_Rela));
6547 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
6548 }
6549
70bccea4
AM
6550 /* Init the .got section contents if we're not
6551 emitting a reloc. */
6552 else
7619e7c7 6553 {
70bccea4
AM
6554 bfd_vma value = relocation;
6555
7b609f53
AM
6556 if (tls_ty == (TLS_TLS | TLS_LD))
6557 value = 1;
6558 else if (tls_ty != 0)
70bccea4 6559 {
e1918d23 6560 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 6561 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 6562 value += DTP_OFFSET - TP_OFFSET;
70bccea4 6563
7b609f53
AM
6564 if (tls_ty == (TLS_TLS | TLS_GD))
6565 {
6566 bfd_put_32 (output_bfd, value,
6567 htab->got->contents + off + 4);
6568 value = 1;
6569 }
70bccea4 6570 }
70bccea4
AM
6571 bfd_put_32 (output_bfd, value,
6572 htab->got->contents + off);
7619e7c7 6573 }
70bccea4
AM
6574
6575 off += 4;
6576 if (tls_ty & (TLS_LD | TLS_GD))
6577 off += 4;
7619e7c7 6578 }
70bccea4
AM
6579 while (tls_m != 0);
6580
6581 off = *offp;
6582 *offp = off | 1;
7619e7c7
AM
6583 }
6584
6585 if (off >= (bfd_vma) -2)
6586 abort ();
6587
70bccea4
AM
6588 if ((tls_type & TLS_TLS) != 0)
6589 {
6590 if (tls_type != (TLS_TLS | TLS_LD))
6591 {
6592 if ((tls_mask & TLS_LD) != 0
6593 && !(h == NULL
f5385ebf 6594 || !h->def_dynamic))
70bccea4
AM
6595 off += 8;
6596 if (tls_type != (TLS_TLS | TLS_GD))
6597 {
6598 if ((tls_mask & TLS_GD) != 0)
6599 off += 8;
6600 if (tls_type != (TLS_TLS | TLS_DTPREL))
6601 {
6602 if ((tls_mask & TLS_DTPREL) != 0)
6603 off += 4;
6604 }
6605 }
6606 }
6607 }
6608
3b36f7e6
AM
6609 relocation = htab->got->output_offset + off;
6610 relocation -= htab->elf.hgot->root.u.def.value;
7619e7c7
AM
6611
6612 /* Addends on got relocations don't make much sense.
6613 x+off@got is actually x@got+off, and since the got is
6614 generated by a hash table traversal, the value in the
6615 got at entry m+n bears little relation to the entry m. */
6616 if (addend != 0)
6617 (*_bfd_error_handler)
d003868e
AM
6618 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6619 input_bfd,
6620 input_section,
7619e7c7 6621 (long) rel->r_offset,
7b609f53 6622 howto->name,
7619e7c7
AM
6623 sym_name);
6624 }
70bccea4 6625 break;
7619e7c7 6626
252b5132 6627 /* Relocations that need no special processing. */
7619e7c7 6628 case R_PPC_LOCAL24PC:
252b5132
RH
6629 /* It makes no sense to point a local relocation
6630 at a symbol not in this object. */
7b609f53 6631 if (unresolved_reloc)
252b5132 6632 {
464e1740
ILT
6633 if (! (*info->callbacks->undefined_symbol) (info,
6634 h->root.root.string,
6635 input_bfd,
6636 input_section,
5cc7c785 6637 rel->r_offset,
b34976b6
AM
6638 TRUE))
6639 return FALSE;
252b5132
RH
6640 continue;
6641 }
6642 break;
6643
7619e7c7
AM
6644 case R_PPC_DTPREL16:
6645 case R_PPC_DTPREL16_LO:
6646 case R_PPC_DTPREL16_HI:
6647 case R_PPC_DTPREL16_HA:
e1918d23 6648 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
6649 break;
6650
70bccea4
AM
6651 /* Relocations that may need to be propagated if this is a shared
6652 object. */
7619e7c7
AM
6653 case R_PPC_TPREL16:
6654 case R_PPC_TPREL16_LO:
6655 case R_PPC_TPREL16_HI:
6656 case R_PPC_TPREL16_HA:
e1918d23 6657 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
6658 /* The TPREL16 relocs shouldn't really be used in shared
6659 libs as they will result in DT_TEXTREL being set, but
6660 support them anyway. */
6661 goto dodyn;
6662
6663 case R_PPC_TPREL32:
e1918d23 6664 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
6665 goto dodyn;
6666
6667 case R_PPC_DTPREL32:
e1918d23 6668 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
6669 goto dodyn;
6670
e515b051
AM
6671 case R_PPC_DTPMOD32:
6672 relocation = 1;
6673 addend = 0;
6674 goto dodyn;
6675
d7128ce4
AM
6676 case R_PPC_REL16:
6677 case R_PPC_REL16_LO:
6678 case R_PPC_REL16_HI:
6679 case R_PPC_REL16_HA:
6680 break;
6681
7619e7c7 6682 case R_PPC_REL32:
625af618
AM
6683 if (h == NULL || h == htab->elf.hgot)
6684 break;
6685 /* fall through */
6686
6687 case R_PPC_ADDR32:
6688 case R_PPC_ADDR16:
6689 case R_PPC_ADDR16_LO:
6690 case R_PPC_ADDR16_HI:
6691 case R_PPC_ADDR16_HA:
6692 case R_PPC_UADDR32:
6693 case R_PPC_UADDR16:
6694 goto dodyn;
6695
6696 case R_PPC_REL24:
7619e7c7
AM
6697 case R_PPC_REL14:
6698 case R_PPC_REL14_BRTAKEN:
6699 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
6700 /* If these relocations are not to a named symbol, they can be
6701 handled right here, no need to bother the dynamic linker. */
89200bf8 6702 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 6703 || h == htab->elf.hgot)
252b5132 6704 break;
70bccea4 6705 /* fall through */
252b5132 6706
7619e7c7 6707 case R_PPC_ADDR24:
7619e7c7
AM
6708 case R_PPC_ADDR14:
6709 case R_PPC_ADDR14_BRTAKEN:
6710 case R_PPC_ADDR14_BRNTAKEN:
625af618
AM
6711 if (h != NULL && !info->shared)
6712 break;
6713 /* fall through */
6714
7619e7c7 6715 dodyn:
3348747a
NS
6716 if ((input_section->flags & SEC_ALLOC) == 0
6717 || is_vxworks_tls)
c87b5a93 6718 break;
c87b5a93 6719
ee05f2fe 6720 if ((info->shared
89200bf8
AM
6721 && !(h != NULL
6722 && ((h->root.type == bfd_link_hash_undefined
6723 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6724 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6725 || (h->root.type == bfd_link_hash_undefweak
6726 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 6727 && (must_be_dyn_reloc (info, r_type)
f6c52c13 6728 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM
6729 || (ELIMINATE_COPY_RELOCS
6730 && !info->shared
ee05f2fe
AM
6731 && h != NULL
6732 && h->dynindx != -1
f5385ebf 6733 && !h->non_got_ref
f5385ebf 6734 && !h->def_regular))
252b5132 6735 {
0bb2d96a 6736 int skip;
252b5132
RH
6737
6738#ifdef DEBUG
55fd94b0
AM
6739 fprintf (stderr, "ppc_elf_relocate_section needs to "
6740 "create relocation for %s\n",
70bccea4
AM
6741 (h && h->root.root.string
6742 ? h->root.root.string : "<unknown>"));
252b5132
RH
6743#endif
6744
6745 /* When generating a shared object, these relocations
70bccea4
AM
6746 are copied into the output file to be resolved at run
6747 time. */
252b5132
RH
6748 if (sreloc == NULL)
6749 {
6750 const char *name;
6751
6752 name = (bfd_elf_string_from_elf_section
6753 (input_bfd,
6754 elf_elfheader (input_bfd)->e_shstrndx,
6755 elf_section_data (input_section)->rel_hdr.sh_name));
6756 if (name == NULL)
b34976b6 6757 return FALSE;
252b5132 6758
0112cd26 6759 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
252b5132
RH
6760 && strcmp (bfd_get_section_name (input_bfd,
6761 input_section),
6762 name + 5) == 0);
6763
7619e7c7 6764 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
252b5132
RH
6765 BFD_ASSERT (sreloc != NULL);
6766 }
6767
0bb2d96a 6768 skip = 0;
c629eae0
JJ
6769 outrel.r_offset =
6770 _bfd_elf_section_offset (output_bfd, info, input_section,
6771 rel->r_offset);
0bb2d96a
JJ
6772 if (outrel.r_offset == (bfd_vma) -1
6773 || outrel.r_offset == (bfd_vma) -2)
6774 skip = (int) outrel.r_offset;
252b5132
RH
6775 outrel.r_offset += (input_section->output_section->vma
6776 + input_section->output_offset);
6777
6778 if (skip)
6779 memset (&outrel, 0, sizeof outrel);
89200bf8
AM
6780 else if ((h != NULL
6781 && (h->root.type == bfd_link_hash_undefined
6782 || h->root.type == bfd_link_hash_undefweak))
6783 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 6784 {
7619e7c7 6785 unresolved_reloc = FALSE;
252b5132
RH
6786 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6787 outrel.r_addend = rel->r_addend;
6788 }
6789 else
6790 {
47388f4c
AM
6791 outrel.r_addend = relocation + rel->r_addend;
6792
252b5132 6793 if (r_type == R_PPC_ADDR32)
47388f4c 6794 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
6795 else
6796 {
89200bf8 6797 long indx = 0;
252b5132 6798
1d483afe 6799 if (r_symndx == 0 || bfd_is_abs_section (sec))
89200bf8 6800 ;
252b5132
RH
6801 else if (sec == NULL || sec->owner == NULL)
6802 {
6803 bfd_set_error (bfd_error_bad_value);
89200bf8 6804 ret = FALSE;
252b5132
RH
6805 }
6806 else
6807 {
6808 asection *osec;
6809
47388f4c
AM
6810 /* We are turning this relocation into one
6811 against a section symbol. It would be
6812 proper to subtract the symbol's value,
6813 osec->vma, from the emitted reloc addend,
6814 but ld.so expects buggy relocs. */
252b5132
RH
6815 osec = sec->output_section;
6816 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
6817 if (indx == 0)
6818 {
6819 osec = htab->elf.text_index_section;
6820 indx = elf_section_data (osec)->dynindx;
6821 }
6822 BFD_ASSERT (indx != 0);
252b5132 6823#ifdef DEBUG
74541ad4 6824 if (indx == 0)
e460dd0d 6825 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
6826 indx, osec->name, osec->flags,
6827 h->root.root.string);
252b5132
RH
6828#endif
6829 }
6830
6831 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH
6832 }
6833 }
6834
947216bf
AM
6835 loc = sreloc->contents;
6836 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6837 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 6838
2243deae 6839 if (skip == -1)
252b5132 6840 continue;
2243deae
L
6841
6842 /* This reloc will be computed at runtime. We clear the memory
6843 so that it contains predictable value. */
6844 if (! skip
6845 && ((input_section->flags & SEC_ALLOC) != 0
6846 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6847 {
6848 relocation = howto->pc_relative ? outrel.r_offset : 0;
6849 addend = 0;
6850 break;
6851 }
252b5132 6852 }
252b5132
RH
6853 break;
6854
b4a38de6
AM
6855 case R_PPC_RELAX32PC_PLT:
6856 case R_PPC_RELAX32_PLT:
a6aa5195
AM
6857 {
6858 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6859
4a3dc543 6860 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
6861 relocation = (htab->glink->output_section->vma
6862 + htab->glink->output_offset
6863 + ent->glink_offset);
6864 else
6865 relocation = (htab->plt->output_section->vma
6866 + htab->plt->output_offset
6867 + ent->plt.offset);
6868 addend = 0;
6869 }
b4a38de6
AM
6870 if (r_type == R_PPC_RELAX32_PLT)
6871 goto relax32;
6872 /* Fall thru */
6873
f31a141e
AM
6874 case R_PPC_RELAX32PC:
6875 relocation -= (input_section->output_section->vma
6876 + input_section->output_offset
6877 + rel->r_offset - 4);
6878 /* Fall thru */
b4a38de6 6879
deaaf2f3 6880 case R_PPC_RELAX32:
b4a38de6 6881 relax32:
9abc968f
AM
6882 {
6883 unsigned long t0;
6884 unsigned long t1;
6885
6886 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6887 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6888
6889 /* We're clearing the bits for R_PPC_ADDR16_HA
6890 and R_PPC_ADDR16_LO here. */
6891 t0 &= ~0xffff;
6892 t1 &= ~0xffff;
6893
6894 /* t0 is HA, t1 is LO */
6895 relocation += addend;
6896 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6897 t1 |= relocation & 0xffff;
6898
6899 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6900 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6901 }
8517fae7 6902 continue;
deaaf2f3 6903
70bccea4 6904 /* Indirect .sdata relocation. */
7619e7c7 6905 case R_PPC_EMB_SDAI16:
c9a2f333 6906 BFD_ASSERT (htab->sdata[0].section != NULL);
7619e7c7 6907 relocation
76750a2f
AM
6908 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6909 h, relocation, rel);
252b5132
RH
6910 break;
6911
70bccea4 6912 /* Indirect .sdata2 relocation. */
7619e7c7 6913 case R_PPC_EMB_SDA2I16:
c9a2f333 6914 BFD_ASSERT (htab->sdata[1].section != NULL);
7619e7c7 6915 relocation
76750a2f
AM
6916 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6917 h, relocation, rel);
252b5132
RH
6918 break;
6919
70bccea4
AM
6920 /* Handle the TOC16 reloc. We want to use the offset within the .got
6921 section, not the actual VMA. This is appropriate when generating
6922 an embedded ELF object, for which the .got section acts like the
6923 AIX .toc section. */
7619e7c7 6924 case R_PPC_TOC16: /* phony GOT16 relocations */
55fd94b0 6925 BFD_ASSERT (sec != NULL);
252b5132
RH
6926 BFD_ASSERT (bfd_is_und_section (sec)
6927 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
f12123c0 6928 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
252b5132 6929
70bccea4 6930 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
6931 break;
6932
7619e7c7 6933 case R_PPC_PLTREL24:
252b5132 6934 /* Relocation is to the entry for this symbol in the
70bccea4 6935 procedure linkage table. */
a6aa5195
AM
6936 {
6937 struct plt_entry *ent = find_plt_ent (h, got2, addend);
252b5132 6938
a6aa5195
AM
6939 addend = 0;
6940 if (ent == NULL
6941 || htab->plt == NULL)
6942 {
6943 /* We didn't make a PLT entry for this symbol. This
6944 happens when statically linking PIC code, or when
6945 using -Bsymbolic. */
6946 break;
6947 }
252b5132 6948
a6aa5195 6949 unresolved_reloc = FALSE;
4a3dc543 6950 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
6951 relocation = (htab->glink->output_section->vma
6952 + htab->glink->output_offset
6953 + ent->glink_offset);
6954 else
6955 relocation = (htab->plt->output_section->vma
6956 + htab->plt->output_offset
6957 + ent->plt.offset);
6958 }
8da6118f 6959 break;
252b5132 6960
70bccea4 6961 /* Relocate against _SDA_BASE_. */
7619e7c7 6962 case R_PPC_SDAREL16:
252b5132
RH
6963 {
6964 const char *name;
046183de 6965 struct elf_link_hash_entry *sh;
252b5132 6966
55fd94b0 6967 BFD_ASSERT (sec != NULL);
252b5132 6968 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 6969 if (! ((CONST_STRNEQ (name, ".sdata")
5f819128 6970 && (name[6] == 0 || name[6] == '.'))
0112cd26 6971 || (CONST_STRNEQ (name, ".sbss")
5f819128 6972 && (name[5] == 0 || name[5] == '.'))))
252b5132 6973 {
55fd94b0 6974 (*_bfd_error_handler)
d003868e 6975 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 6976 "in the wrong output section (%s)"),
d003868e 6977 input_bfd,
55fd94b0
AM
6978 sym_name,
6979 howto->name,
6980 name);
252b5132 6981 }
046183de
AM
6982 sh = htab->sdata[0].sym;
6983 addend -= (sh->root.u.def.value
6984 + sh->root.u.def.section->output_offset
6985 + sh->root.u.def.section->output_section->vma);
252b5132
RH
6986 }
6987 break;
6988
70bccea4 6989 /* Relocate against _SDA2_BASE_. */
7619e7c7 6990 case R_PPC_EMB_SDA2REL:
252b5132
RH
6991 {
6992 const char *name;
046183de 6993 struct elf_link_hash_entry *sh;
252b5132 6994
55fd94b0 6995 BFD_ASSERT (sec != NULL);
252b5132 6996 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26
NC
6997 if (! (CONST_STRNEQ (name, ".sdata2")
6998 || CONST_STRNEQ (name, ".sbss2")))
252b5132 6999 {
55fd94b0 7000 (*_bfd_error_handler)
d003868e 7001 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7002 "in the wrong output section (%s)"),
d003868e 7003 input_bfd,
55fd94b0
AM
7004 sym_name,
7005 howto->name,
7006 name);
c3668558 7007
252b5132 7008 bfd_set_error (bfd_error_bad_value);
b34976b6 7009 ret = FALSE;
252b5132
RH
7010 continue;
7011 }
046183de
AM
7012 sh = htab->sdata[1].sym;
7013 addend -= (sh->root.u.def.value
7014 + sh->root.u.def.section->output_offset
7015 + sh->root.u.def.section->output_section->vma);
252b5132
RH
7016 }
7017 break;
7018
70bccea4 7019 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7
AM
7020 case R_PPC_EMB_SDA21:
7021 case R_PPC_EMB_RELSDA:
252b5132
RH
7022 {
7023 const char *name;
7024 int reg;
046183de 7025 struct elf_link_hash_entry *sh;
252b5132 7026
55fd94b0 7027 BFD_ASSERT (sec != NULL);
252b5132 7028 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7029 if (((CONST_STRNEQ (name, ".sdata")
5f819128 7030 && (name[6] == 0 || name[6] == '.'))
0112cd26 7031 || (CONST_STRNEQ (name, ".sbss")
5f819128 7032 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH
7033 {
7034 reg = 13;
046183de
AM
7035 sh = htab->sdata[0].sym;
7036 addend -= (sh->root.u.def.value
7037 + sh->root.u.def.section->output_offset
7038 + sh->root.u.def.section->output_section->vma);
252b5132
RH
7039 }
7040
0112cd26
NC
7041 else if (CONST_STRNEQ (name, ".sdata2")
7042 || CONST_STRNEQ (name, ".sbss2"))
252b5132
RH
7043 {
7044 reg = 2;
046183de
AM
7045 sh = htab->sdata[1].sym;
7046 addend -= (sh->root.u.def.value
7047 + sh->root.u.def.section->output_offset
7048 + sh->root.u.def.section->output_section->vma);
252b5132
RH
7049 }
7050
8da6118f
KH
7051 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7052 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
7053 {
7054 reg = 0;
7055 }
7056
7057 else
7058 {
55fd94b0 7059 (*_bfd_error_handler)
d003868e 7060 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7061 "in the wrong output section (%s)"),
d003868e 7062 input_bfd,
55fd94b0
AM
7063 sym_name,
7064 howto->name,
7065 name);
252b5132
RH
7066
7067 bfd_set_error (bfd_error_bad_value);
b34976b6 7068 ret = FALSE;
252b5132
RH
7069 continue;
7070 }
7071
7072 if (r_type == R_PPC_EMB_SDA21)
7073 { /* fill in register field */
7619e7c7 7074 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 7075 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 7076 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
7077 }
7078 }
7079 break;
7080
70bccea4 7081 /* Relocate against the beginning of the section. */
7619e7c7
AM
7082 case R_PPC_SECTOFF:
7083 case R_PPC_SECTOFF_LO:
7084 case R_PPC_SECTOFF_HI:
7085 case R_PPC_SECTOFF_HA:
55fd94b0 7086 BFD_ASSERT (sec != NULL);
252b5132 7087 addend -= sec->output_section->vma;
252b5132
RH
7088 break;
7089
70bccea4 7090 /* Negative relocations. */
7619e7c7
AM
7091 case R_PPC_EMB_NADDR32:
7092 case R_PPC_EMB_NADDR16:
7093 case R_PPC_EMB_NADDR16_LO:
7094 case R_PPC_EMB_NADDR16_HI:
7095 case R_PPC_EMB_NADDR16_HA:
8da6118f 7096 addend -= 2 * relocation;
252b5132
RH
7097 break;
7098
7619e7c7
AM
7099 case R_PPC_COPY:
7100 case R_PPC_GLOB_DAT:
7101 case R_PPC_JMP_SLOT:
7102 case R_PPC_RELATIVE:
7103 case R_PPC_PLT32:
7104 case R_PPC_PLTREL32:
7105 case R_PPC_PLT16_LO:
7106 case R_PPC_PLT16_HI:
7107 case R_PPC_PLT16_HA:
7108 case R_PPC_ADDR30:
7109 case R_PPC_EMB_RELSEC16:
7110 case R_PPC_EMB_RELST_LO:
7111 case R_PPC_EMB_RELST_HI:
7112 case R_PPC_EMB_RELST_HA:
7113 case R_PPC_EMB_BIT_FLD:
7114 (*_bfd_error_handler)
d003868e
AM
7115 (_("%B: relocation %s is not yet supported for symbol %s."),
7116 input_bfd,
7619e7c7
AM
7117 howto->name,
7118 sym_name);
252b5132
RH
7119
7120 bfd_set_error (bfd_error_invalid_operation);
b34976b6 7121 ret = FALSE;
252b5132 7122 continue;
7619e7c7 7123 }
252b5132 7124
7619e7c7
AM
7125 /* Do any further special processing. */
7126 switch (r_type)
7127 {
7128 default:
7129 break;
7130
7131 case R_PPC_ADDR16_HA:
d7128ce4 7132 case R_PPC_REL16_HA:
7619e7c7
AM
7133 case R_PPC_SECTOFF_HA:
7134 case R_PPC_TPREL16_HA:
7135 case R_PPC_DTPREL16_HA:
7619e7c7
AM
7136 case R_PPC_EMB_NADDR16_HA:
7137 case R_PPC_EMB_RELST_HA:
7138 /* It's just possible that this symbol is a weak symbol
7b609f53 7139 that's not actually defined anywhere. In that case,
7619e7c7
AM
7140 'sec' would be NULL, and we should leave the symbol
7141 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
7142 if (sec == NULL)
7143 break;
7144 /* Fall thru */
7145
7146 case R_PPC_PLT16_HA:
7147 case R_PPC_GOT16_HA:
7148 case R_PPC_GOT_TLSGD16_HA:
7149 case R_PPC_GOT_TLSLD16_HA:
7150 case R_PPC_GOT_TPREL16_HA:
7151 case R_PPC_GOT_DTPREL16_HA:
7152 /* Add 0x10000 if sign bit in 0:15 is set.
7153 Bits 0:15 are not used. */
7154 addend += 0x8000;
7619e7c7 7155 break;
252b5132
RH
7156 }
7157
252b5132 7158#ifdef DEBUG
55fd94b0
AM
7159 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7160 "offset = %ld, addend = %ld\n",
252b5132 7161 howto->name,
8da6118f 7162 (int) r_type,
252b5132
RH
7163 sym_name,
7164 r_symndx,
7619e7c7 7165 (long) rel->r_offset,
8da6118f 7166 (long) addend);
252b5132
RH
7167#endif
7168
7619e7c7
AM
7169 if (unresolved_reloc
7170 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 7171 && h->def_dynamic))
7619e7c7
AM
7172 {
7173 (*_bfd_error_handler)
d003868e
AM
7174 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7175 input_bfd,
7176 input_section,
7619e7c7 7177 (long) rel->r_offset,
7b609f53 7178 howto->name,
7619e7c7
AM
7179 sym_name);
7180 ret = FALSE;
7181 }
7182
252b5132
RH
7183 r = _bfd_final_link_relocate (howto,
7184 input_bfd,
7185 input_section,
7186 contents,
7619e7c7 7187 rel->r_offset,
252b5132
RH
7188 relocation,
7189 addend);
7190
7619e7c7 7191 if (r != bfd_reloc_ok)
252b5132 7192 {
7619e7c7 7193 if (r == bfd_reloc_overflow)
252b5132 7194 {
7619e7c7
AM
7195 if (warned)
7196 continue;
7197 if (h != NULL
7198 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH
7199 && howto->pc_relative)
7200 {
7201 /* Assume this is a call protected by other code that
7202 detect the symbol is undefined. If this is the case,
7203 we can safely ignore the overflow. If not, the
7204 program is hosed anyway, and a little warning isn't
7205 going to help. */
252b5132 7206
dc1bc0c9
RH
7207 continue;
7208 }
252b5132 7209
7619e7c7 7210 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 7211 (h ? &h->root : NULL),
7619e7c7
AM
7212 sym_name,
7213 howto->name,
7214 rel->r_addend,
7215 input_bfd,
7216 input_section,
7217 rel->r_offset))
7218 return FALSE;
dc1bc0c9
RH
7219 }
7220 else
7221 {
7619e7c7 7222 (*_bfd_error_handler)
d003868e
AM
7223 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7224 input_bfd, input_section,
7b609f53 7225 (long) rel->r_offset, howto->name, sym_name, (int) r);
7619e7c7 7226 ret = FALSE;
252b5132
RH
7227 }
7228 }
7229 }
7230
252b5132
RH
7231#ifdef DEBUG
7232 fprintf (stderr, "\n");
7233#endif
7234
7235 return ret;
7236}
252b5132 7237\f
a6aa5195
AM
7238#define PPC_LO(v) ((v) & 0xffff)
7239#define PPC_HI(v) (((v) >> 16) & 0xffff)
7240#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7241
25dbc73a
AM
7242/* Finish up dynamic symbol handling. We set the contents of various
7243 dynamic sections here. */
c5fccbec 7244
b34976b6 7245static bfd_boolean
25dbc73a
AM
7246ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7247 struct bfd_link_info *info,
7248 struct elf_link_hash_entry *h,
7249 Elf_Internal_Sym *sym)
e1a9cb8e 7250{
25dbc73a 7251 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
7252 struct plt_entry *ent;
7253 bfd_boolean doneone;
e1a9cb8e 7254
25dbc73a
AM
7255#ifdef DEBUG
7256 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7257 h->root.root.string);
7258#endif
e1a9cb8e 7259
25dbc73a
AM
7260 htab = ppc_elf_hash_table (info);
7261 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 7262
a6aa5195
AM
7263 doneone = FALSE;
7264 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7265 if (ent->plt.offset != (bfd_vma) -1)
7266 {
7267 if (!doneone)
7268 {
7269 Elf_Internal_Rela rela;
7270 bfd_byte *loc;
7271 bfd_vma reloc_index;
e1a9cb8e 7272
4a3dc543 7273 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
7274 reloc_index = ent->plt.offset / 4;
7275 else
7276 {
7277 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7278 / htab->plt_slot_size);
7279 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 7280 && htab->plt_type == PLT_OLD)
9d8504b1
PB
7281 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
7282 }
7283
a6aa5195
AM
7284 /* This symbol has an entry in the procedure linkage table.
7285 Set it up. */
4a3dc543 7286 if (htab->plt_type == PLT_VXWORKS)
a6aa5195 7287 {
9d8504b1
PB
7288 bfd_vma got_offset;
7289 const bfd_vma *plt_entry;
7290
7291 /* The first three entries in .got.plt are reserved. */
7292 got_offset = (reloc_index + 3) * 4;
7293
7294 /* Use the right PLT. */
7295 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
7296 : ppc_elf_vxworks_plt_entry;
7297
7298 /* Fill in the .plt on VxWorks. */
7299 if (info->shared)
7300 {
7301 bfd_vma got_offset_hi = (got_offset >> 16)
7302 + ((got_offset & 0x8000) >> 15);
7303
7304 bfd_put_32 (output_bfd,
7305 plt_entry[0] | (got_offset_hi & 0xffff),
7306 htab->plt->contents + ent->plt.offset + 0);
7307 bfd_put_32 (output_bfd,
7308 plt_entry[1] | (got_offset & 0xffff),
7309 htab->plt->contents + ent->plt.offset + 4);
7310 }
7311 else
7312 {
636ce3f5
AM
7313 bfd_vma got_loc
7314 = (got_offset
7315 + htab->elf.hgot->root.u.def.value
7316 + htab->elf.hgot->root.u.def.section->output_offset
7317 + htab->elf.hgot->root.u.def.section->output_section->vma);
9d8504b1
PB
7318 bfd_vma got_loc_hi = (got_loc >> 16)
7319 + ((got_loc & 0x8000) >> 15);
7320
7321 bfd_put_32 (output_bfd,
7322 plt_entry[0] | (got_loc_hi & 0xffff),
7323 htab->plt->contents + ent->plt.offset + 0);
7324 bfd_put_32 (output_bfd,
7325 plt_entry[1] | (got_loc & 0xffff),
7326 htab->plt->contents + ent->plt.offset + 4);
7327 }
7328
7329 bfd_put_32 (output_bfd, plt_entry[2],
7330 htab->plt->contents + ent->plt.offset + 8);
7331 bfd_put_32 (output_bfd, plt_entry[3],
7332 htab->plt->contents + ent->plt.offset + 12);
7333
7334 /* This instruction is an immediate load. The value loaded is
7335 the byte offset of the R_PPC_JMP_SLOT relocation from the
7336 start of the .rela.plt section. The value is stored in the
7337 low-order 16 bits of the load instruction. */
7338 /* NOTE: It appears that this is now an index rather than a
7339 prescaled offset. */
7340 bfd_put_32 (output_bfd,
7341 plt_entry[4] | reloc_index,
7342 htab->plt->contents + ent->plt.offset + 16);
7343 /* This instruction is a PC-relative branch whose target is
7344 the start of the PLT section. The address of this branch
7345 instruction is 20 bytes beyond the start of this PLT entry.
7346 The address is encoded in bits 6-29, inclusive. The value
7347 stored is right-shifted by two bits, permitting a 26-bit
7348 offset. */
7349 bfd_put_32 (output_bfd,
7350 (plt_entry[5]
7351 | (-(ent->plt.offset + 20) & 0x03fffffc)),
7352 htab->plt->contents + ent->plt.offset + 20);
7353 bfd_put_32 (output_bfd, plt_entry[6],
7354 htab->plt->contents + ent->plt.offset + 24);
7355 bfd_put_32 (output_bfd, plt_entry[7],
7356 htab->plt->contents + ent->plt.offset + 28);
7357
7358 /* Fill in the GOT entry corresponding to this PLT slot with
7359 the address immediately after the the "bctr" instruction
7360 in this PLT entry. */
7361 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
7362 + htab->plt->output_offset
7363 + ent->plt.offset + 16),
7364 htab->sgotplt->contents + got_offset);
7365
7366 if (!info->shared)
7367 {
7368 /* Fill in a couple of entries in .rela.plt.unloaded. */
7369 loc = htab->srelplt2->contents
7370 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
7371 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
7372 * sizeof (Elf32_External_Rela));
7373
7374 /* Provide the @ha relocation for the first instruction. */
7375 rela.r_offset = (htab->plt->output_section->vma
7376 + htab->plt->output_offset
7377 + ent->plt.offset + 2);
636ce3f5 7378 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
7379 R_PPC_ADDR16_HA);
7380 rela.r_addend = got_offset;
7381 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7382 loc += sizeof (Elf32_External_Rela);
7383
7384 /* Provide the @l relocation for the second instruction. */
7385 rela.r_offset = (htab->plt->output_section->vma
7386 + htab->plt->output_offset
7387 + ent->plt.offset + 6);
636ce3f5 7388 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
7389 R_PPC_ADDR16_LO);
7390 rela.r_addend = got_offset;
7391 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7392 loc += sizeof (Elf32_External_Rela);
7393
7394 /* Provide a relocation for the GOT entry corresponding to this
7395 PLT slot. Point it at the middle of the .plt entry. */
7396 rela.r_offset = (htab->sgotplt->output_section->vma
7397 + htab->sgotplt->output_offset
7398 + got_offset);
7325306f 7399 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
7400 R_PPC_ADDR32);
7401 rela.r_addend = ent->plt.offset + 16;
7402 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7403 }
7404
7405 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7406 In particular, the offset for the relocation is not the
7407 address of the PLT entry for this function, as specified
7408 by the ABI. Instead, the offset is set to the address of
7409 the GOT slot for this function. See EABI 4.4.4.1. */
7410 rela.r_offset = (htab->sgotplt->output_section->vma
7411 + htab->sgotplt->output_offset
7412 + got_offset);
7413
a6aa5195
AM
7414 }
7415 else
7416 {
9d8504b1
PB
7417 rela.r_offset = (htab->plt->output_section->vma
7418 + htab->plt->output_offset
7419 + ent->plt.offset);
4a3dc543 7420 if (htab->plt_type == PLT_OLD)
9d8504b1
PB
7421 {
7422 /* We don't need to fill in the .plt. The ppc dynamic
7423 linker will fill it in. */
7424 }
7425 else
7426 {
7427 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
7428 + htab->glink->output_section->vma
7429 + htab->glink->output_offset);
7430 bfd_put_32 (output_bfd, val,
7431 htab->plt->contents + ent->plt.offset);
7432 }
a6aa5195 7433 }
e1a9cb8e 7434
a6aa5195 7435 /* Fill in the entry in the .rela.plt section. */
a6aa5195
AM
7436 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
7437 rela.r_addend = 0;
e1a9cb8e 7438
a6aa5195
AM
7439 loc = (htab->relplt->contents
7440 + reloc_index * sizeof (Elf32_External_Rela));
7441 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 7442
a6aa5195
AM
7443 if (!h->def_regular)
7444 {
0eb4a168
AM
7445 /* Mark the symbol as undefined, rather than as
7446 defined in the .plt section. Leave the value if
7447 there were any relocations where pointer equality
7448 matters (this is a clue for the dynamic linker, to
7449 make function pointer comparisons work between an
7450 application and shared library), otherwise set it
7451 to zero. */
a6aa5195 7452 sym->st_shndx = SHN_UNDEF;
0eb4a168 7453 if (!h->pointer_equality_needed)
a6aa5195 7454 sym->st_value = 0;
0eb4a168
AM
7455 else if (!h->ref_regular_nonweak)
7456 {
625af618
AM
7457 /* This breaks function pointer comparisons, but
7458 that is better than breaking tests for a NULL
0eb4a168 7459 function pointer. */
0eb4a168
AM
7460 sym->st_value = 0;
7461 }
a6aa5195
AM
7462 }
7463 doneone = TRUE;
7464 }
e1a9cb8e 7465
4a3dc543 7466 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
7467 {
7468 bfd_vma plt;
7469 unsigned char *p;
e1a9cb8e 7470
a6aa5195
AM
7471 plt = (ent->plt.offset
7472 + htab->plt->output_section->vma
7473 + htab->plt->output_offset);
7474 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
e1a9cb8e 7475
a6aa5195
AM
7476 if (info->shared || info->pie)
7477 {
7478 bfd_vma got = 0;
7479
7480 if (ent->addend >= 32768)
7481 got = (ent->addend
7482 + ent->sec->output_section->vma
7483 + ent->sec->output_offset);
7484 else if (htab->elf.hgot != NULL)
7485 got = (htab->elf.hgot->root.u.def.value
7486 + htab->elf.hgot->root.u.def.section->output_section->vma
7487 + htab->elf.hgot->root.u.def.section->output_offset);
7488
7489 plt -= got;
7490
7491 if (plt + 0x8000 < 0x10000)
7492 {
7493 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7494 p += 4;
7495 bfd_put_32 (output_bfd, MTCTR_11, p);
7496 p += 4;
7497 bfd_put_32 (output_bfd, BCTR, p);
7498 p += 4;
7499 bfd_put_32 (output_bfd, NOP, p);
7500 p += 4;
7501 }
7502 else
7503 {
7504 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7505 p += 4;
7506 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7507 p += 4;
7508 bfd_put_32 (output_bfd, MTCTR_11, p);
7509 p += 4;
7510 bfd_put_32 (output_bfd, BCTR, p);
7511 p += 4;
7512 }
7513 }
7514 else
7515 {
7516 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7517 p += 4;
7518 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7519 p += 4;
7520 bfd_put_32 (output_bfd, MTCTR_11, p);
7521 p += 4;
7522 bfd_put_32 (output_bfd, BCTR, p);
7523 p += 4;
28e99bb6
AM
7524
7525 /* We only need one non-PIC glink stub. */
7526 break;
a6aa5195
AM
7527 }
7528 }
7529 else
7530 break;
7531 }
e1a9cb8e 7532
25dbc73a
AM
7533 if (h->needs_copy)
7534 {
7535 asection *s;
7536 Elf_Internal_Rela rela;
7537 bfd_byte *loc;
e1a9cb8e 7538
25dbc73a 7539 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 7540
25dbc73a
AM
7541#ifdef DEBUG
7542 fprintf (stderr, ", copy");
7543#endif
e1a9cb8e 7544
25dbc73a 7545 BFD_ASSERT (h->dynindx != -1);
86bbe32f 7546
4dc4a9a5 7547 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
7548 s = htab->relsbss;
7549 else
7550 s = htab->relbss;
7551 BFD_ASSERT (s != NULL);
e1a9cb8e 7552
25dbc73a
AM
7553 rela.r_offset = (h->root.u.def.value
7554 + h->root.u.def.section->output_section->vma
7555 + h->root.u.def.section->output_offset);
7556 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7557 rela.r_addend = 0;
7558 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7559 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7560 }
e1a9cb8e 7561
25dbc73a
AM
7562#ifdef DEBUG
7563 fprintf (stderr, "\n");
7564#endif
e1a9cb8e 7565
25dbc73a 7566 /* Mark some specially defined symbols as absolute. */
9d8504b1
PB
7567 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7568 || (!htab->is_vxworks
7569 && (h == htab->elf.hgot
7570 || strcmp (h->root.root.string,
7571 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
25dbc73a 7572 sym->st_shndx = SHN_ABS;
e1a9cb8e 7573
25dbc73a
AM
7574 return TRUE;
7575}
7576\f
7577static enum elf_reloc_type_class
7578ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 7579{
25dbc73a
AM
7580 switch (ELF32_R_TYPE (rela->r_info))
7581 {
7582 case R_PPC_RELATIVE:
7583 return reloc_class_relative;
7584 case R_PPC_REL24:
7585 case R_PPC_ADDR24:
7586 case R_PPC_JMP_SLOT:
7587 return reloc_class_plt;
7588 case R_PPC_COPY:
7589 return reloc_class_copy;
7590 default:
7591 return reloc_class_normal;
7592 }
e1a9cb8e 7593}
25dbc73a
AM
7594\f
7595/* Finish up the dynamic sections. */
e1a9cb8e 7596
25dbc73a
AM
7597static bfd_boolean
7598ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7599 struct bfd_link_info *info)
e1a9cb8e 7600{
25dbc73a 7601 asection *sdyn;
9d8504b1 7602 asection *splt;
25dbc73a 7603 struct ppc_elf_link_hash_table *htab;
1fe44d79 7604 bfd_vma got;
9d8504b1 7605 bfd * dynobj;
e1a9cb8e 7606
25dbc73a
AM
7607#ifdef DEBUG
7608 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7609#endif
6b0817e5 7610
25dbc73a 7611 htab = ppc_elf_hash_table (info);
9d8504b1
PB
7612 dynobj = elf_hash_table (info)->dynobj;
7613 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7614 if (htab->is_vxworks)
7615 splt = bfd_get_section_by_name (dynobj, ".plt");
7616 else
7617 splt = NULL;
e1a9cb8e 7618
1fe44d79
AM
7619 got = 0;
7620 if (htab->elf.hgot != NULL)
7621 got = (htab->elf.hgot->root.u.def.value
7622 + htab->elf.hgot->root.u.def.section->output_section->vma
7623 + htab->elf.hgot->root.u.def.section->output_offset);
7624
25dbc73a 7625 if (htab->elf.dynamic_sections_created)
e1a9cb8e 7626 {
25dbc73a 7627 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 7628
25dbc73a 7629 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 7630
25dbc73a
AM
7631 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7632 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7633 for (; dyncon < dynconend; dyncon++)
7634 {
7635 Elf_Internal_Dyn dyn;
7636 asection *s;
e1a9cb8e 7637
9d8504b1 7638 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 7639
25dbc73a
AM
7640 switch (dyn.d_tag)
7641 {
7642 case DT_PLTGOT:
9d8504b1
PB
7643 if (htab->is_vxworks)
7644 s = htab->sgotplt;
7645 else
7646 s = htab->plt;
25dbc73a
AM
7647 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7648 break;
86bbe32f 7649
25dbc73a
AM
7650 case DT_PLTRELSZ:
7651 dyn.d_un.d_val = htab->relplt->size;
7652 break;
e1a9cb8e 7653
25dbc73a
AM
7654 case DT_JMPREL:
7655 s = htab->relplt;
7656 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7657 break;
2f89ff8d 7658
1fe44d79
AM
7659 case DT_PPC_GOT:
7660 dyn.d_un.d_ptr = got;
d7128ce4
AM
7661 break;
7662
9d8504b1
PB
7663 case DT_RELASZ:
7664 if (htab->is_vxworks)
7665 {
7666 if (htab->relplt)
7667 dyn.d_un.d_ptr -= htab->relplt->size;
7668 break;
7669 }
7670 continue;
7671
25dbc73a 7672 default:
7a2b07ff
NS
7673 if (htab->is_vxworks
7674 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7675 break;
25dbc73a
AM
7676 continue;
7677 }
4c45e5c9 7678
25dbc73a
AM
7679 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7680 }
7681 }
4c45e5c9 7682
25dbc73a
AM
7683 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7684 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
3b36f7e6 7685 if (htab->got != NULL)
25dbc73a 7686 {
3b36f7e6
AM
7687 unsigned char *p = htab->got->contents;
7688 bfd_vma val;
2f89ff8d 7689
636ce3f5 7690 p += htab->elf.hgot->root.u.def.value;
4a3dc543 7691 if (htab->plt_type == PLT_OLD)
d7128ce4 7692 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
3b36f7e6
AM
7693
7694 val = 0;
7695 if (sdyn != NULL)
7696 val = sdyn->output_section->vma + sdyn->output_offset;
7697 bfd_put_32 (output_bfd, val, p);
25dbc73a
AM
7698
7699 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7700 }
7701
9d8504b1
PB
7702 /* Fill in the first entry in the VxWorks procedure linkage table. */
7703 if (splt && splt->size > 0)
7704 {
7705 /* Use the right PLT. */
7706 static const bfd_vma *plt_entry = NULL;
7707 plt_entry = info->shared ?
7708 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7709
7710 if (!info->shared)
7711 {
7712 bfd_vma got_value =
636ce3f5
AM
7713 (htab->elf.hgot->root.u.def.section->output_section->vma
7714 + htab->elf.hgot->root.u.def.section->output_offset
7715 + htab->elf.hgot->root.u.def.value);
9d8504b1
PB
7716 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7717
7718 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7719 splt->contents + 0);
7720 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7721 splt->contents + 4);
7722 }
7723 else
7724 {
7725 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7726 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7727 }
7728 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7729 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7730 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7731 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7732 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7733 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7734
7735 if (! info->shared)
7736 {
7737 Elf_Internal_Rela rela;
7738 bfd_byte *loc;
7739
7740 loc = htab->srelplt2->contents;
7741
7742 /* Output the @ha relocation for the first instruction. */
7743 rela.r_offset = (htab->plt->output_section->vma
7744 + htab->plt->output_offset
7745 + 2);
636ce3f5 7746 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
7747 rela.r_addend = 0;
7748 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7749 loc += sizeof (Elf32_External_Rela);
7750
7751 /* Output the @l relocation for the second instruction. */
7752 rela.r_offset = (htab->plt->output_section->vma
7753 + htab->plt->output_offset
7754 + 6);
636ce3f5 7755 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
7756 rela.r_addend = 0;
7757 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7758 loc += sizeof (Elf32_External_Rela);
7759
7760 /* Fix up the remaining relocations. They may have the wrong
7761 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7762 in which symbols were output. */
7763 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7764 {
7765 Elf_Internal_Rela rel;
7766
7767 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 7768 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
7769 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7770 loc += sizeof (Elf32_External_Rela);
7771
7772 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 7773 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
7774 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7775 loc += sizeof (Elf32_External_Rela);
7776
7777 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 7778 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
7779 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7780 loc += sizeof (Elf32_External_Rela);
7781 }
7782 }
7783 }
7784
d7128ce4
AM
7785 if (htab->glink != NULL && htab->glink->contents != NULL)
7786 {
7787 unsigned char *p;
7788 unsigned char *endp;
a6aa5195 7789 bfd_vma res0;
d7128ce4 7790 unsigned int i;
a6aa5195
AM
7791
7792 /*
7793 * PIC glink code is the following:
7794 *
7795 * # ith PLT code stub.
7796 * addis 11,30,(plt+(i-1)*4-got)@ha
7797 * lwz 11,(plt+(i-1)*4-got)@l(11)
7798 * mtctr 11
7799 * bctr
7800 *
7801 * # A table of branches, one for each plt entry.
176a0d42 7802 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
7803 * # addresses, so (r11 - res_0) gives the plt index * 4.
7804 * res_0: b PLTresolve
7805 * res_1: b PLTresolve
7806 * .
7807 * # Some number of entries towards the end can be nops
7808 * res_n_m3: nop
7809 * res_n_m2: nop
7810 * res_n_m1:
7811 *
7812 * PLTresolve:
7813 * addis 11,11,(1f-res_0)@ha
7814 * mflr 0
7815 * bcl 20,31,1f
7816 * 1: addi 11,11,(1b-res_0)@l
7817 * mflr 12
7818 * mtlr 0
7819 * sub 11,11,12 # r11 = index * 4
7820 * addis 12,12,(got+4-1b)@ha
7821 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7822 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7823 * mtctr 0
7824 * add 0,11,11
7825 * add 11,0,11 # r11 = index * 12 = reloc offset.
7826 * bctr
7827 */
7828 static const unsigned int pic_plt_resolve[] =
7829 {
7830 ADDIS_11_11,
7831 MFLR_0,
7832 BCL_20_31,
7833 ADDI_11_11,
7834 MFLR_12,
7835 MTLR_0,
7836 SUB_11_11_12,
7837 ADDIS_12_12,
7838 LWZ_0_12,
7839 LWZ_12_12,
7840 MTCTR_0,
7841 ADD_0_11_11,
7842 ADD_11_0_11,
7843 BCTR,
7844 NOP,
7845 NOP
7846 };
7847
176a0d42
AM
7848 /*
7849 * Non-PIC glink code is a little simpler.
7850 *
7851 * # ith PLT code stub.
7852 * lis 11,(plt+(i-1)*4)@ha
7853 * lwz 11,(plt+(i-1)*4)@l(11)
7854 * mtctr 11
7855 * bctr
7856 *
7857 * The branch table is the same, then comes
7858 *
7859 * PLTresolve:
7860 * lis 12,(got+4)@ha
7861 * addis 11,11,(-res_0)@ha
7862 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
7863 * addi 11,11,(-res_0)@l # r11 = index * 4
7864 * mtctr 0
7865 * add 0,11,11
7866 * lwz 12,(got+8)@l(12) # got[2] contains the map address
7867 * add 11,0,11 # r11 = index * 12 = reloc offset.
7868 * bctr
7869 */
d7128ce4
AM
7870 static const unsigned int plt_resolve[] =
7871 {
a6aa5195
AM
7872 LIS_12,
7873 ADDIS_11_11,
7874 LWZ_0_12,
7875 ADDI_11_11,
d7128ce4 7876 MTCTR_0,
7e8aeb9a 7877 ADD_0_11_11,
a6aa5195 7878 LWZ_12_12,
7e8aeb9a 7879 ADD_11_0_11,
d7128ce4
AM
7880 BCTR,
7881 NOP,
7882 NOP,
a6aa5195
AM
7883 NOP,
7884 NOP,
7885 NOP,
7886 NOP,
d7128ce4
AM
7887 NOP
7888 };
7889
a6aa5195
AM
7890 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7891 abort ();
7892 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
7893 abort ();
7894
a6aa5195 7895 /* Build the branch table, one for each plt entry (less one),
86b9da88 7896 and perhaps some padding. */
a6aa5195
AM
7897 p = htab->glink->contents;
7898 p += htab->glink_pltresolve;
86b9da88
AM
7899 endp = htab->glink->contents;
7900 endp += htab->glink->size - GLINK_PLTRESOLVE;
7901 while (p < endp - 8 * 4)
7902 {
7903 bfd_put_32 (output_bfd, B + endp - p, p);
7904 p += 4;
7905 }
7906 while (p < endp)
7907 {
7908 bfd_put_32 (output_bfd, NOP, p);
7909 p += 4;
7910 }
7911
7e8aeb9a 7912 res0 = (htab->glink_pltresolve
86b9da88
AM
7913 + htab->glink->output_section->vma
7914 + htab->glink->output_offset);
7915
7916 /* Last comes the PLTresolve stub. */
7e8aeb9a
AM
7917 if (info->shared || info->pie)
7918 {
a6aa5195 7919 bfd_vma bcl;
d7128ce4 7920
a6aa5195 7921 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 7922 {
a6aa5195 7923 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7e8aeb9a
AM
7924 p += 4;
7925 }
a6aa5195
AM
7926 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7927
7928 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7929 + htab->glink->output_section->vma
7930 + htab->glink->output_offset);
7931
7932 bfd_put_32 (output_bfd,
7933 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7934 bfd_put_32 (output_bfd,
7935 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7936 bfd_put_32 (output_bfd,
7937 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7938 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7939 {
7940 bfd_put_32 (output_bfd,
7941 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7942 bfd_put_32 (output_bfd,
7943 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7944 }
7945 else
7946 {
7947 bfd_put_32 (output_bfd,
7948 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7949 bfd_put_32 (output_bfd,
7950 LWZ_12_12 + 4, p + 9*4);
7951 }
7e8aeb9a
AM
7952 }
7953 else
d7128ce4 7954 {
a6aa5195 7955 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a
AM
7956 {
7957 bfd_put_32 (output_bfd, plt_resolve[i], p);
7958 p += 4;
7959 }
a6aa5195
AM
7960 p -= 4 * ARRAY_SIZE (plt_resolve);
7961
7962 bfd_put_32 (output_bfd,
7963 LIS_12 + PPC_HA (got + 4), p + 0*4);
7964 bfd_put_32 (output_bfd,
7965 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
7966 bfd_put_32 (output_bfd,
7967 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
7968 if (PPC_HA (got + 4) == PPC_HA (got + 8))
7969 {
7970 bfd_put_32 (output_bfd,
7971 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
7972 bfd_put_32 (output_bfd,
7973 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
7974 }
7975 else
7976 {
7977 bfd_put_32 (output_bfd,
7978 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
7979 bfd_put_32 (output_bfd,
7980 LWZ_12_12 + 4, p + 6*4);
7981 }
d7128ce4 7982 }
d7128ce4
AM
7983 }
7984
25dbc73a
AM
7985 return TRUE;
7986}
e1a9cb8e 7987\f
252b5132
RH
7988#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7989#define TARGET_LITTLE_NAME "elf32-powerpcle"
7990#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7991#define TARGET_BIG_NAME "elf32-powerpc"
7992#define ELF_ARCH bfd_arch_powerpc
7993#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
7994#ifdef __QNXTARGET__
7995#define ELF_MAXPAGESIZE 0x1000
7996#else
252b5132 7997#define ELF_MAXPAGESIZE 0x10000
d0facd1b 7998#endif
b1342370 7999#define ELF_MINPAGESIZE 0x1000
24718e3b 8000#define ELF_COMMONPAGESIZE 0x1000
252b5132
RH
8001#define elf_info_to_howto ppc_elf_info_to_howto
8002
8003#ifdef EM_CYGNUS_POWERPC
8004#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8005#endif
8006
8007#ifdef EM_PPC_OLD
8008#define ELF_MACHINE_ALT2 EM_PPC_OLD
8009#endif
8010
8011#define elf_backend_plt_not_loaded 1
252b5132 8012#define elf_backend_can_gc_sections 1
51b64d56 8013#define elf_backend_can_refcount 1
b491616a 8014#define elf_backend_rela_normal 1
252b5132 8015
43c40ab2 8016#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 8017#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 8018#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 8019#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
157090f7 8020#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 8021#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 8022#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 8023#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 8024
feee612b 8025#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
8026#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8027#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8028#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8029#define elf_backend_relocate_section ppc_elf_relocate_section
8030#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8031#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 8032#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
8033#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8034#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8035#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 8036#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
8037#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8038#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8039#define elf_backend_fake_sections ppc_elf_fake_sections
8040#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
c5fccbec
DJ
8041#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8042#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 8043#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 8044#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
8045#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8046#define elf_backend_final_write_processing ppc_elf_final_write_processing
8047#define elf_backend_write_section ppc_elf_write_section
551b43fd 8048#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 8049#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 8050#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 8051#define elf_backend_init_index_section _bfd_elf_init_1_index_section
252b5132
RH
8052
8053#include "elf32-target.h"
9d8504b1
PB
8054
8055/* VxWorks Target */
8056
8057#undef TARGET_LITTLE_SYM
8058#undef TARGET_LITTLE_NAME
8059
8060#undef TARGET_BIG_SYM
8061#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8062#undef TARGET_BIG_NAME
8063#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8064
d5e3d971
PB
8065/* VxWorks uses the elf default section flags for .plt. */
8066static const struct bfd_elf_special_section *
8067ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 8068{
d5e3d971
PB
8069 if (sec->name == NULL)
8070 return NULL;
8071
8072 if (strcmp (sec->name, ".plt") == 0)
8073 return _bfd_elf_get_sec_type_attr (abfd, sec);
8074
8075 return ppc_elf_get_sec_type_attr (abfd, sec);
8076}
9d8504b1
PB
8077
8078/* Like ppc_elf_link_hash_table_create, but overrides
8079 appropriately for VxWorks. */
8080static struct bfd_link_hash_table *
8081ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8082{
8083 struct bfd_link_hash_table *ret;
8084
8085 ret = ppc_elf_link_hash_table_create (abfd);
8086 if (ret)
8087 {
8088 struct ppc_elf_link_hash_table *htab
8089 = (struct ppc_elf_link_hash_table *)ret;
8090 htab->is_vxworks = 1;
4a3dc543 8091 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
8092 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8093 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8094 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8095 }
8096 return ret;
8097}
8098
8099/* Tweak magic VxWorks symbols as they are loaded. */
8100static bfd_boolean
8101ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8102 struct bfd_link_info *info,
8103 Elf_Internal_Sym *sym,
8104 const char **namep ATTRIBUTE_UNUSED,
8105 flagword *flagsp ATTRIBUTE_UNUSED,
8106 asection **secp,
8107 bfd_vma *valp)
8108{
8109 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8110 valp))
8111 return FALSE;
8112
8113 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8114}
8115
9d8504b1
PB
8116static void
8117ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8118{
8119 ppc_elf_final_write_processing(abfd, linker);
8120 elf_vxworks_final_write_processing(abfd, linker);
8121}
8122
8123/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8124 define it. */
8125#undef elf_backend_want_plt_sym
8126#define elf_backend_want_plt_sym 1
8127#undef elf_backend_want_got_plt
8128#define elf_backend_want_got_plt 1
8129#undef elf_backend_got_symbol_offset
8130#define elf_backend_got_symbol_offset 0
8131#undef elf_backend_plt_not_loaded
8132#define elf_backend_plt_not_loaded 0
8133#undef elf_backend_plt_readonly
8134#define elf_backend_plt_readonly 1
8135#undef elf_backend_got_header_size
8136#define elf_backend_got_header_size 12
8137
468392fb
AM
8138#undef bfd_elf32_get_synthetic_symtab
8139
9d8504b1
PB
8140#undef bfd_elf32_bfd_link_hash_table_create
8141#define bfd_elf32_bfd_link_hash_table_create \
8142 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
8143#undef elf_backend_add_symbol_hook
8144#define elf_backend_add_symbol_hook \
8145 ppc_elf_vxworks_add_symbol_hook
8146#undef elf_backend_link_output_symbol_hook
8147#define elf_backend_link_output_symbol_hook \
9c72ff84 8148 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
8149#undef elf_backend_final_write_processing
8150#define elf_backend_final_write_processing \
8151 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
8152#undef elf_backend_get_sec_type_attr
8153#define elf_backend_get_sec_type_attr \
8154 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
8155#undef elf_backend_emit_relocs
8156#define elf_backend_emit_relocs \
8157 elf_vxworks_emit_relocs
8158
8159#undef elf32_bed
8160#define elf32_bed ppc_elf_vxworks_bed
8161
8162#include "elf32-target.h"
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