* elf32-ppc.c (ppc_elf_check_relocs): Always add a plt ref count
[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,
3a71aa26 3 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
252b5132
RH
4 Written by Ian Lance Taylor, Cygnus Support.
5
ae9a127f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
ae9a127f
NC
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
ae9a127f 11 (at your option) any later version.
252b5132 12
ae9a127f
NC
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
ae9a127f 18 You should have received a copy of the GNU General Public License
fc0bffd6 19 along with this program; if not, write to the
3e110533 20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
53e09e0a 21 Boston, MA 02110-1301, USA. */
252b5132 22
cd123cb7 23
252b5132
RH
24/* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
28
3db64b00 29#include "sysdep.h"
183e98be 30#include <stdarg.h>
252b5132 31#include "bfd.h"
252b5132
RH
32#include "bfdlink.h"
33#include "libbfd.h"
34#include "elf-bfd.h"
35#include "elf/ppc.h"
7619e7c7 36#include "elf32-ppc.h"
9d8504b1 37#include "elf-vxworks.h"
252b5132 38
f0fe0e16 39/* RELA relocations are used here. */
252b5132 40
252b5132 41static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 43static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 45
70bccea4
AM
46/* Branch prediction bit for branch taken relocs. */
47#define BRANCH_PREDICT_BIT 0x200000
48/* Mask to set RA in memory instructions. */
49#define RA_REGISTER_MASK 0x001f0000
50/* Value to shift register by to insert RA. */
51#define RA_REGISTER_SHIFT 16
252b5132
RH
52
53/* The name of the dynamic interpreter. This is put in the .interp
54 section. */
252b5132
RH
55#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
56
d7128ce4 57/* For old-style PLT. */
252b5132
RH
58/* The number of single-slot PLT entries (the rest use two slots). */
59#define PLT_NUM_SINGLE_ENTRIES 8192
60
d7128ce4 61/* For new-style .glink and .plt. */
a6aa5195 62#define GLINK_PLTRESOLVE 16*4
d7128ce4
AM
63#define GLINK_ENTRY_SIZE 4*4
64
9d8504b1
PB
65/* VxWorks uses its own plt layout, filled in by the static linker. */
66
67/* The standard VxWorks PLT entry. */
68#define VXWORKS_PLT_ENTRY_SIZE 32
69static const bfd_vma ppc_elf_vxworks_plt_entry
70 [VXWORKS_PLT_ENTRY_SIZE / 4] =
71 {
72 0x3d800000, /* lis r12,0 */
73 0x818c0000, /* lwz r12,0(r12) */
74 0x7d8903a6, /* mtctr r12 */
75 0x4e800420, /* bctr */
76 0x39600000, /* li r11,0 */
77 0x48000000, /* b 14 <.PLT0resolve+0x4> */
78 0x60000000, /* nop */
79 0x60000000, /* nop */
80 };
81static const bfd_vma ppc_elf_vxworks_pic_plt_entry
82 [VXWORKS_PLT_ENTRY_SIZE / 4] =
83 {
84 0x3d9e0000, /* addis r12,r30,0 */
85 0x818c0000, /* lwz r12,0(r12) */
86 0x7d8903a6, /* mtctr r12 */
87 0x4e800420, /* bctr */
88 0x39600000, /* li r11,0 */
89 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
90 0x60000000, /* nop */
91 0x60000000, /* nop */
92 };
93
94/* The initial VxWorks PLT entry. */
95#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
96static const bfd_vma ppc_elf_vxworks_plt0_entry
97 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
98 {
99 0x3d800000, /* lis r12,0 */
100 0x398c0000, /* addi r12,r12,0 */
101 0x800c0008, /* lwz r0,8(r12) */
102 0x7c0903a6, /* mtctr r0 */
103 0x818c0004, /* lwz r12,4(r12) */
104 0x4e800420, /* bctr */
105 0x60000000, /* nop */
106 0x60000000, /* nop */
107 };
108static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
109 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
110 {
111 0x819e0008, /* lwz r12,8(r30) */
112 0x7d8903a6, /* mtctr r12 */
113 0x819e0004, /* lwz r12,4(r30) */
114 0x4e800420, /* bctr */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
119 };
120
121/* For executables, we have some additional relocations in
122 .rela.plt.unloaded, for the kernel loader. */
123
124/* The number of non-JMP_SLOT relocations per PLT0 slot. */
125#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
126/* The number of relocations in the PLTResolve slot. */
127#define VXWORKS_PLTRESOLVE_RELOCS 2
128/* The number of relocations in the PLTResolve slot when when creating
129 a shared library. */
130#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
131
d7128ce4 132/* Some instructions. */
d7128ce4 133#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM
134#define ADDIS_11_30 0x3d7e0000
135#define ADDIS_12_12 0x3d8c0000
d7128ce4 136#define ADDI_11_11 0x396b0000
d7128ce4
AM
137#define ADD_0_11_11 0x7c0b5a14
138#define ADD_11_0_11 0x7d605a14
a6aa5195
AM
139#define B 0x48000000
140#define BCL_20_31 0x429f0005
d7128ce4 141#define BCTR 0x4e800420
7e8aeb9a
AM
142#define LIS_11 0x3d600000
143#define LIS_12 0x3d800000
a6aa5195
AM
144#define LWZU_0_12 0x840c0000
145#define LWZ_0_12 0x800c0000
146#define LWZ_11_11 0x816b0000
147#define LWZ_11_30 0x817e0000
148#define LWZ_12_12 0x818c0000
149#define MFLR_0 0x7c0802a6
150#define MFLR_12 0x7d8802a6
151#define MTCTR_0 0x7c0903a6
152#define MTCTR_11 0x7d6903a6
153#define MTLR_0 0x7c0803a6
154#define NOP 0x60000000
155#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM
156
157/* Offset of tp and dtp pointers from start of TLS block. */
158#define TP_OFFSET 0x7000
159#define DTP_OFFSET 0x8000
e87d4038
AM
160
161/* The value of a defined global symbol. */
162#define SYM_VAL(SYM) \
163 ((SYM)->root.u.def.section->output_section->vma \
164 + (SYM)->root.u.def.section->output_offset \
165 + (SYM)->root.u.def.value)
7fce784e 166\f
e47cd125 167static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 168
8da6118f 169static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH
170 /* This reloc does nothing. */
171 HOWTO (R_PPC_NONE, /* type */
172 0, /* rightshift */
173 2, /* size (0 = byte, 1 = short, 2 = long) */
174 32, /* bitsize */
b34976b6 175 FALSE, /* pc_relative */
252b5132
RH
176 0, /* bitpos */
177 complain_overflow_bitfield, /* complain_on_overflow */
178 bfd_elf_generic_reloc, /* special_function */
179 "R_PPC_NONE", /* name */
b34976b6 180 FALSE, /* partial_inplace */
252b5132
RH
181 0, /* src_mask */
182 0, /* dst_mask */
b34976b6 183 FALSE), /* pcrel_offset */
252b5132
RH
184
185 /* A standard 32 bit relocation. */
186 HOWTO (R_PPC_ADDR32, /* type */
187 0, /* rightshift */
188 2, /* size (0 = byte, 1 = short, 2 = long) */
189 32, /* bitsize */
b34976b6 190 FALSE, /* pc_relative */
252b5132
RH
191 0, /* bitpos */
192 complain_overflow_bitfield, /* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_PPC_ADDR32", /* name */
b34976b6 195 FALSE, /* partial_inplace */
252b5132
RH
196 0, /* src_mask */
197 0xffffffff, /* dst_mask */
b34976b6 198 FALSE), /* pcrel_offset */
252b5132
RH
199
200 /* An absolute 26 bit branch; the lower two bits must be zero.
201 FIXME: we don't check that, we just clear them. */
202 HOWTO (R_PPC_ADDR24, /* type */
203 0, /* rightshift */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
205 26, /* bitsize */
b34976b6 206 FALSE, /* pc_relative */
252b5132
RH
207 0, /* bitpos */
208 complain_overflow_bitfield, /* complain_on_overflow */
209 bfd_elf_generic_reloc, /* special_function */
210 "R_PPC_ADDR24", /* name */
b34976b6 211 FALSE, /* partial_inplace */
252b5132
RH
212 0, /* src_mask */
213 0x3fffffc, /* dst_mask */
b34976b6 214 FALSE), /* pcrel_offset */
252b5132
RH
215
216 /* A standard 16 bit relocation. */
217 HOWTO (R_PPC_ADDR16, /* type */
218 0, /* rightshift */
219 1, /* size (0 = byte, 1 = short, 2 = long) */
220 16, /* bitsize */
b34976b6 221 FALSE, /* pc_relative */
252b5132
RH
222 0, /* bitpos */
223 complain_overflow_bitfield, /* complain_on_overflow */
224 bfd_elf_generic_reloc, /* special_function */
225 "R_PPC_ADDR16", /* name */
b34976b6 226 FALSE, /* partial_inplace */
252b5132
RH
227 0, /* src_mask */
228 0xffff, /* dst_mask */
b34976b6 229 FALSE), /* pcrel_offset */
252b5132
RH
230
231 /* A 16 bit relocation without overflow. */
232 HOWTO (R_PPC_ADDR16_LO, /* type */
233 0, /* rightshift */
234 1, /* size (0 = byte, 1 = short, 2 = long) */
235 16, /* bitsize */
b34976b6 236 FALSE, /* pc_relative */
252b5132
RH
237 0, /* bitpos */
238 complain_overflow_dont,/* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_PPC_ADDR16_LO", /* name */
b34976b6 241 FALSE, /* partial_inplace */
252b5132
RH
242 0, /* src_mask */
243 0xffff, /* dst_mask */
b34976b6 244 FALSE), /* pcrel_offset */
252b5132
RH
245
246 /* The high order 16 bits of an address. */
247 HOWTO (R_PPC_ADDR16_HI, /* type */
248 16, /* rightshift */
249 1, /* size (0 = byte, 1 = short, 2 = long) */
250 16, /* bitsize */
b34976b6 251 FALSE, /* pc_relative */
252b5132
RH
252 0, /* bitpos */
253 complain_overflow_dont, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_PPC_ADDR16_HI", /* name */
b34976b6 256 FALSE, /* partial_inplace */
252b5132
RH
257 0, /* src_mask */
258 0xffff, /* dst_mask */
b34976b6 259 FALSE), /* pcrel_offset */
252b5132
RH
260
261 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 262 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH
263 HOWTO (R_PPC_ADDR16_HA, /* type */
264 16, /* rightshift */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
266 16, /* bitsize */
b34976b6 267 FALSE, /* pc_relative */
252b5132
RH
268 0, /* bitpos */
269 complain_overflow_dont, /* complain_on_overflow */
270 ppc_elf_addr16_ha_reloc, /* special_function */
271 "R_PPC_ADDR16_HA", /* name */
b34976b6 272 FALSE, /* partial_inplace */
252b5132
RH
273 0, /* src_mask */
274 0xffff, /* dst_mask */
b34976b6 275 FALSE), /* pcrel_offset */
252b5132
RH
276
277 /* An absolute 16 bit branch; the lower two bits must be zero.
278 FIXME: we don't check that, we just clear them. */
279 HOWTO (R_PPC_ADDR14, /* type */
280 0, /* rightshift */
281 2, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
b34976b6 283 FALSE, /* pc_relative */
252b5132
RH
284 0, /* bitpos */
285 complain_overflow_bitfield, /* complain_on_overflow */
286 bfd_elf_generic_reloc, /* special_function */
287 "R_PPC_ADDR14", /* name */
b34976b6 288 FALSE, /* partial_inplace */
252b5132
RH
289 0, /* src_mask */
290 0xfffc, /* dst_mask */
b34976b6 291 FALSE), /* pcrel_offset */
252b5132
RH
292
293 /* An absolute 16 bit branch, for which bit 10 should be set to
294 indicate that the branch is expected to be taken. The lower two
8da6118f 295 bits must be zero. */
252b5132
RH
296 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
b34976b6 300 FALSE, /* pc_relative */
252b5132
RH
301 0, /* bitpos */
302 complain_overflow_bitfield, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 305 FALSE, /* partial_inplace */
252b5132
RH
306 0, /* src_mask */
307 0xfffc, /* dst_mask */
b34976b6 308 FALSE), /* pcrel_offset */
252b5132
RH
309
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is not expected to be taken. The lower
312 two bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
314 0, /* rightshift */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
316 16, /* bitsize */
b34976b6 317 FALSE, /* pc_relative */
252b5132
RH
318 0, /* bitpos */
319 complain_overflow_bitfield, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 322 FALSE, /* partial_inplace */
252b5132
RH
323 0, /* src_mask */
324 0xfffc, /* dst_mask */
b34976b6 325 FALSE), /* pcrel_offset */
252b5132 326
8da6118f 327 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH
328 HOWTO (R_PPC_REL24, /* type */
329 0, /* rightshift */
330 2, /* size (0 = byte, 1 = short, 2 = long) */
331 26, /* bitsize */
b34976b6 332 TRUE, /* pc_relative */
252b5132
RH
333 0, /* bitpos */
334 complain_overflow_signed, /* complain_on_overflow */
335 bfd_elf_generic_reloc, /* special_function */
336 "R_PPC_REL24", /* name */
b34976b6 337 FALSE, /* partial_inplace */
252b5132
RH
338 0, /* src_mask */
339 0x3fffffc, /* dst_mask */
b34976b6 340 TRUE), /* pcrel_offset */
252b5132 341
8da6118f 342 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH
343 HOWTO (R_PPC_REL14, /* type */
344 0, /* rightshift */
345 2, /* size (0 = byte, 1 = short, 2 = long) */
346 16, /* bitsize */
b34976b6 347 TRUE, /* pc_relative */
252b5132
RH
348 0, /* bitpos */
349 complain_overflow_signed, /* complain_on_overflow */
350 bfd_elf_generic_reloc, /* special_function */
351 "R_PPC_REL14", /* name */
b34976b6 352 FALSE, /* partial_inplace */
252b5132
RH
353 0, /* src_mask */
354 0xfffc, /* dst_mask */
b34976b6 355 TRUE), /* pcrel_offset */
252b5132 356
8da6118f 357 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
358 the branch is expected to be taken. The lower two bits must be
359 zero. */
360 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
361 0, /* rightshift */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
363 16, /* bitsize */
b34976b6 364 TRUE, /* pc_relative */
252b5132
RH
365 0, /* bitpos */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 369 FALSE, /* partial_inplace */
252b5132
RH
370 0, /* src_mask */
371 0xfffc, /* dst_mask */
b34976b6 372 TRUE), /* pcrel_offset */
252b5132 373
8da6118f 374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
375 the branch is not expected to be taken. The lower two bits must
376 be zero. */
377 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
b34976b6 381 TRUE, /* pc_relative */
252b5132
RH
382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 386 FALSE, /* partial_inplace */
252b5132
RH
387 0, /* src_mask */
388 0xfffc, /* dst_mask */
b34976b6 389 TRUE), /* pcrel_offset */
252b5132
RH
390
391 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
392 symbol. */
393 HOWTO (R_PPC_GOT16, /* type */
394 0, /* rightshift */
395 1, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
b34976b6 397 FALSE, /* pc_relative */
252b5132
RH
398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC_GOT16", /* name */
b34976b6 402 FALSE, /* partial_inplace */
252b5132
RH
403 0, /* src_mask */
404 0xffff, /* dst_mask */
b34976b6 405 FALSE), /* pcrel_offset */
252b5132
RH
406
407 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
408 the symbol. */
409 HOWTO (R_PPC_GOT16_LO, /* type */
410 0, /* rightshift */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
412 16, /* bitsize */
b34976b6 413 FALSE, /* pc_relative */
252b5132
RH
414 0, /* bitpos */
415 complain_overflow_dont, /* complain_on_overflow */
416 bfd_elf_generic_reloc, /* special_function */
417 "R_PPC_GOT16_LO", /* name */
b34976b6 418 FALSE, /* partial_inplace */
252b5132
RH
419 0, /* src_mask */
420 0xffff, /* dst_mask */
b34976b6 421 FALSE), /* pcrel_offset */
252b5132
RH
422
423 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
424 the symbol. */
425 HOWTO (R_PPC_GOT16_HI, /* type */
426 16, /* rightshift */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
428 16, /* bitsize */
b34976b6 429 FALSE, /* pc_relative */
252b5132
RH
430 0, /* bitpos */
431 complain_overflow_bitfield, /* complain_on_overflow */
432 bfd_elf_generic_reloc, /* special_function */
433 "R_PPC_GOT16_HI", /* name */
b34976b6 434 FALSE, /* partial_inplace */
252b5132
RH
435 0, /* src_mask */
436 0xffff, /* dst_mask */
b34976b6 437 FALSE), /* pcrel_offset */
252b5132
RH
438
439 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
440 the symbol. */
441 HOWTO (R_PPC_GOT16_HA, /* type */
442 16, /* rightshift */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
444 16, /* bitsize */
b34976b6 445 FALSE, /* pc_relative */
252b5132
RH
446 0, /* bitpos */
447 complain_overflow_bitfield, /* complain_on_overflow */
448 ppc_elf_addr16_ha_reloc, /* special_function */
449 "R_PPC_GOT16_HA", /* name */
b34976b6 450 FALSE, /* partial_inplace */
252b5132
RH
451 0, /* src_mask */
452 0xffff, /* dst_mask */
b34976b6 453 FALSE), /* pcrel_offset */
252b5132
RH
454
455 /* Like R_PPC_REL24, but referring to the procedure linkage table
456 entry for the symbol. */
457 HOWTO (R_PPC_PLTREL24, /* type */
458 0, /* rightshift */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
460 26, /* bitsize */
b34976b6 461 TRUE, /* pc_relative */
252b5132
RH
462 0, /* bitpos */
463 complain_overflow_signed, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_PPC_PLTREL24", /* name */
b34976b6 466 FALSE, /* partial_inplace */
252b5132
RH
467 0, /* src_mask */
468 0x3fffffc, /* dst_mask */
b34976b6 469 TRUE), /* pcrel_offset */
252b5132
RH
470
471 /* This is used only by the dynamic linker. The symbol should exist
472 both in the object being run and in some shared library. The
473 dynamic linker copies the data addressed by the symbol from the
474 shared library into the object, because the object being
475 run has to have the data at some particular address. */
476 HOWTO (R_PPC_COPY, /* type */
477 0, /* rightshift */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
479 32, /* bitsize */
b34976b6 480 FALSE, /* pc_relative */
252b5132
RH
481 0, /* bitpos */
482 complain_overflow_bitfield, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_PPC_COPY", /* name */
b34976b6 485 FALSE, /* partial_inplace */
252b5132
RH
486 0, /* src_mask */
487 0, /* dst_mask */
b34976b6 488 FALSE), /* pcrel_offset */
252b5132
RH
489
490 /* Like R_PPC_ADDR32, but used when setting global offset table
491 entries. */
492 HOWTO (R_PPC_GLOB_DAT, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 32, /* bitsize */
b34976b6 496 FALSE, /* pc_relative */
252b5132
RH
497 0, /* bitpos */
498 complain_overflow_bitfield, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_PPC_GLOB_DAT", /* name */
b34976b6 501 FALSE, /* partial_inplace */
252b5132
RH
502 0, /* src_mask */
503 0xffffffff, /* dst_mask */
b34976b6 504 FALSE), /* pcrel_offset */
252b5132
RH
505
506 /* Marks a procedure linkage table entry for a symbol. */
507 HOWTO (R_PPC_JMP_SLOT, /* type */
508 0, /* rightshift */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
510 32, /* bitsize */
b34976b6 511 FALSE, /* pc_relative */
252b5132
RH
512 0, /* bitpos */
513 complain_overflow_bitfield, /* complain_on_overflow */
514 bfd_elf_generic_reloc, /* special_function */
515 "R_PPC_JMP_SLOT", /* name */
b34976b6 516 FALSE, /* partial_inplace */
252b5132
RH
517 0, /* src_mask */
518 0, /* dst_mask */
b34976b6 519 FALSE), /* pcrel_offset */
252b5132
RH
520
521 /* Used only by the dynamic linker. When the object is run, this
522 longword is set to the load address of the object, plus the
523 addend. */
524 HOWTO (R_PPC_RELATIVE, /* type */
525 0, /* rightshift */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
527 32, /* bitsize */
b34976b6 528 FALSE, /* pc_relative */
252b5132
RH
529 0, /* bitpos */
530 complain_overflow_bitfield, /* complain_on_overflow */
531 bfd_elf_generic_reloc, /* special_function */
532 "R_PPC_RELATIVE", /* name */
b34976b6 533 FALSE, /* partial_inplace */
252b5132
RH
534 0, /* src_mask */
535 0xffffffff, /* dst_mask */
b34976b6 536 FALSE), /* pcrel_offset */
252b5132
RH
537
538 /* Like R_PPC_REL24, but uses the value of the symbol within the
539 object rather than the final value. Normally used for
540 _GLOBAL_OFFSET_TABLE_. */
541 HOWTO (R_PPC_LOCAL24PC, /* type */
542 0, /* rightshift */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
544 26, /* bitsize */
b34976b6 545 TRUE, /* pc_relative */
252b5132
RH
546 0, /* bitpos */
547 complain_overflow_signed, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_LOCAL24PC", /* name */
b34976b6 550 FALSE, /* partial_inplace */
252b5132
RH
551 0, /* src_mask */
552 0x3fffffc, /* dst_mask */
b34976b6 553 TRUE), /* pcrel_offset */
252b5132
RH
554
555 /* Like R_PPC_ADDR32, but may be unaligned. */
556 HOWTO (R_PPC_UADDR32, /* type */
557 0, /* rightshift */
558 2, /* size (0 = byte, 1 = short, 2 = long) */
559 32, /* bitsize */
b34976b6 560 FALSE, /* pc_relative */
252b5132
RH
561 0, /* bitpos */
562 complain_overflow_bitfield, /* complain_on_overflow */
563 bfd_elf_generic_reloc, /* special_function */
564 "R_PPC_UADDR32", /* name */
b34976b6 565 FALSE, /* partial_inplace */
252b5132
RH
566 0, /* src_mask */
567 0xffffffff, /* dst_mask */
b34976b6 568 FALSE), /* pcrel_offset */
252b5132
RH
569
570 /* Like R_PPC_ADDR16, but may be unaligned. */
571 HOWTO (R_PPC_UADDR16, /* type */
572 0, /* rightshift */
573 1, /* size (0 = byte, 1 = short, 2 = long) */
574 16, /* bitsize */
b34976b6 575 FALSE, /* pc_relative */
252b5132
RH
576 0, /* bitpos */
577 complain_overflow_bitfield, /* complain_on_overflow */
578 bfd_elf_generic_reloc, /* special_function */
579 "R_PPC_UADDR16", /* name */
b34976b6 580 FALSE, /* partial_inplace */
252b5132
RH
581 0, /* src_mask */
582 0xffff, /* dst_mask */
b34976b6 583 FALSE), /* pcrel_offset */
252b5132
RH
584
585 /* 32-bit PC relative */
586 HOWTO (R_PPC_REL32, /* type */
587 0, /* rightshift */
588 2, /* size (0 = byte, 1 = short, 2 = long) */
589 32, /* bitsize */
b34976b6 590 TRUE, /* pc_relative */
252b5132
RH
591 0, /* bitpos */
592 complain_overflow_bitfield, /* complain_on_overflow */
593 bfd_elf_generic_reloc, /* special_function */
594 "R_PPC_REL32", /* name */
b34976b6 595 FALSE, /* partial_inplace */
252b5132
RH
596 0, /* src_mask */
597 0xffffffff, /* dst_mask */
b34976b6 598 TRUE), /* pcrel_offset */
252b5132
RH
599
600 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 601 FIXME: not supported. */
252b5132
RH
602 HOWTO (R_PPC_PLT32, /* type */
603 0, /* rightshift */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
605 32, /* bitsize */
b34976b6 606 FALSE, /* pc_relative */
252b5132
RH
607 0, /* bitpos */
608 complain_overflow_bitfield, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_PLT32", /* name */
b34976b6 611 FALSE, /* partial_inplace */
252b5132
RH
612 0, /* src_mask */
613 0, /* dst_mask */
b34976b6 614 FALSE), /* pcrel_offset */
252b5132
RH
615
616 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 617 FIXME: not supported. */
252b5132
RH
618 HOWTO (R_PPC_PLTREL32, /* type */
619 0, /* rightshift */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
621 32, /* bitsize */
b34976b6 622 TRUE, /* pc_relative */
252b5132
RH
623 0, /* bitpos */
624 complain_overflow_bitfield, /* complain_on_overflow */
625 bfd_elf_generic_reloc, /* special_function */
626 "R_PPC_PLTREL32", /* name */
b34976b6 627 FALSE, /* partial_inplace */
252b5132
RH
628 0, /* src_mask */
629 0, /* dst_mask */
b34976b6 630 TRUE), /* pcrel_offset */
252b5132
RH
631
632 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
633 the symbol. */
634 HOWTO (R_PPC_PLT16_LO, /* type */
635 0, /* rightshift */
636 1, /* size (0 = byte, 1 = short, 2 = long) */
637 16, /* bitsize */
b34976b6 638 FALSE, /* pc_relative */
252b5132
RH
639 0, /* bitpos */
640 complain_overflow_dont, /* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_PPC_PLT16_LO", /* name */
b34976b6 643 FALSE, /* partial_inplace */
252b5132
RH
644 0, /* src_mask */
645 0xffff, /* dst_mask */
b34976b6 646 FALSE), /* pcrel_offset */
252b5132
RH
647
648 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
649 the symbol. */
650 HOWTO (R_PPC_PLT16_HI, /* type */
651 16, /* rightshift */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
653 16, /* bitsize */
b34976b6 654 FALSE, /* pc_relative */
252b5132
RH
655 0, /* bitpos */
656 complain_overflow_bitfield, /* complain_on_overflow */
657 bfd_elf_generic_reloc, /* special_function */
658 "R_PPC_PLT16_HI", /* name */
b34976b6 659 FALSE, /* partial_inplace */
252b5132
RH
660 0, /* src_mask */
661 0xffff, /* dst_mask */
b34976b6 662 FALSE), /* pcrel_offset */
252b5132
RH
663
664 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
665 the symbol. */
666 HOWTO (R_PPC_PLT16_HA, /* type */
667 16, /* rightshift */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
669 16, /* bitsize */
b34976b6 670 FALSE, /* pc_relative */
252b5132
RH
671 0, /* bitpos */
672 complain_overflow_bitfield, /* complain_on_overflow */
673 ppc_elf_addr16_ha_reloc, /* special_function */
674 "R_PPC_PLT16_HA", /* name */
b34976b6 675 FALSE, /* partial_inplace */
252b5132
RH
676 0, /* src_mask */
677 0xffff, /* dst_mask */
b34976b6 678 FALSE), /* pcrel_offset */
252b5132
RH
679
680 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
681 small data items. */
682 HOWTO (R_PPC_SDAREL16, /* type */
683 0, /* rightshift */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
b34976b6 686 FALSE, /* pc_relative */
252b5132
RH
687 0, /* bitpos */
688 complain_overflow_signed, /* complain_on_overflow */
689 bfd_elf_generic_reloc, /* special_function */
690 "R_PPC_SDAREL16", /* name */
b34976b6 691 FALSE, /* partial_inplace */
252b5132
RH
692 0, /* src_mask */
693 0xffff, /* dst_mask */
b34976b6 694 FALSE), /* pcrel_offset */
252b5132 695
c061c2d8 696 /* 16-bit section relative relocation. */
252b5132
RH
697 HOWTO (R_PPC_SECTOFF, /* type */
698 0, /* rightshift */
c061c2d8
AM
699 1, /* size (0 = byte, 1 = short, 2 = long) */
700 16, /* bitsize */
b34976b6 701 FALSE, /* pc_relative */
252b5132
RH
702 0, /* bitpos */
703 complain_overflow_bitfield, /* complain_on_overflow */
704 bfd_elf_generic_reloc, /* special_function */
705 "R_PPC_SECTOFF", /* name */
b34976b6 706 FALSE, /* partial_inplace */
252b5132 707 0, /* src_mask */
c061c2d8 708 0xffff, /* dst_mask */
b34976b6 709 FALSE), /* pcrel_offset */
252b5132 710
c3668558 711 /* 16-bit lower half section relative relocation. */
252b5132
RH
712 HOWTO (R_PPC_SECTOFF_LO, /* type */
713 0, /* rightshift */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
715 16, /* bitsize */
b34976b6 716 FALSE, /* pc_relative */
252b5132
RH
717 0, /* bitpos */
718 complain_overflow_dont, /* complain_on_overflow */
719 bfd_elf_generic_reloc, /* special_function */
720 "R_PPC_SECTOFF_LO", /* name */
b34976b6 721 FALSE, /* partial_inplace */
252b5132
RH
722 0, /* src_mask */
723 0xffff, /* dst_mask */
b34976b6 724 FALSE), /* pcrel_offset */
252b5132 725
c3668558 726 /* 16-bit upper half section relative relocation. */
252b5132
RH
727 HOWTO (R_PPC_SECTOFF_HI, /* type */
728 16, /* rightshift */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
b34976b6 731 FALSE, /* pc_relative */
252b5132
RH
732 0, /* bitpos */
733 complain_overflow_bitfield, /* complain_on_overflow */
734 bfd_elf_generic_reloc, /* special_function */
735 "R_PPC_SECTOFF_HI", /* name */
b34976b6 736 FALSE, /* partial_inplace */
252b5132
RH
737 0, /* src_mask */
738 0xffff, /* dst_mask */
b34976b6 739 FALSE), /* pcrel_offset */
252b5132 740
c3668558 741 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH
742 HOWTO (R_PPC_SECTOFF_HA, /* type */
743 16, /* rightshift */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
745 16, /* bitsize */
b34976b6 746 FALSE, /* pc_relative */
252b5132
RH
747 0, /* bitpos */
748 complain_overflow_bitfield, /* complain_on_overflow */
749 ppc_elf_addr16_ha_reloc, /* special_function */
750 "R_PPC_SECTOFF_HA", /* name */
b34976b6 751 FALSE, /* partial_inplace */
252b5132
RH
752 0, /* src_mask */
753 0xffff, /* dst_mask */
b34976b6 754 FALSE), /* pcrel_offset */
252b5132 755
727fc41e 756 /* Marker relocs for TLS. */
7619e7c7 757 HOWTO (R_PPC_TLS,
252b5132
RH
758 0, /* rightshift */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
760 32, /* bitsize */
b34976b6 761 FALSE, /* pc_relative */
252b5132 762 0, /* bitpos */
7619e7c7 763 complain_overflow_dont, /* complain_on_overflow */
252b5132 764 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM
765 "R_PPC_TLS", /* name */
766 FALSE, /* partial_inplace */
767 0, /* src_mask */
768 0, /* dst_mask */
769 FALSE), /* pcrel_offset */
770
727fc41e
AM
771 HOWTO (R_PPC_TLSGD,
772 0, /* rightshift */
773 2, /* size (0 = byte, 1 = short, 2 = long) */
774 32, /* bitsize */
775 FALSE, /* pc_relative */
776 0, /* bitpos */
777 complain_overflow_dont, /* complain_on_overflow */
778 bfd_elf_generic_reloc, /* special_function */
779 "R_PPC_TLSGD", /* name */
780 FALSE, /* partial_inplace */
781 0, /* src_mask */
782 0, /* dst_mask */
783 FALSE), /* pcrel_offset */
784
785 HOWTO (R_PPC_TLSLD,
786 0, /* rightshift */
787 2, /* size (0 = byte, 1 = short, 2 = long) */
788 32, /* bitsize */
789 FALSE, /* pc_relative */
790 0, /* bitpos */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC_TLSLD", /* name */
794 FALSE, /* partial_inplace */
795 0, /* src_mask */
796 0, /* dst_mask */
797 FALSE), /* pcrel_offset */
798
7619e7c7
AM
799 /* Computes the load module index of the load module that contains the
800 definition of its TLS sym. */
801 HOWTO (R_PPC_DTPMOD32,
802 0, /* rightshift */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
804 32, /* bitsize */
805 FALSE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_dont, /* complain_on_overflow */
808 ppc_elf_unhandled_reloc, /* special_function */
809 "R_PPC_DTPMOD32", /* name */
b34976b6 810 FALSE, /* partial_inplace */
252b5132
RH
811 0, /* src_mask */
812 0xffffffff, /* dst_mask */
b34976b6 813 FALSE), /* pcrel_offset */
252b5132 814
7619e7c7
AM
815 /* Computes a dtv-relative displacement, the difference between the value
816 of sym+add and the base address of the thread-local storage block that
817 contains the definition of sym, minus 0x8000. */
818 HOWTO (R_PPC_DTPREL32,
819 0, /* rightshift */
820 2, /* size (0 = byte, 1 = short, 2 = long) */
821 32, /* bitsize */
822 FALSE, /* pc_relative */
823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPREL32", /* name */
827 FALSE, /* partial_inplace */
828 0, /* src_mask */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
831
832 /* A 16 bit dtprel reloc. */
833 HOWTO (R_PPC_DTPREL16,
252b5132
RH
834 0, /* rightshift */
835 1, /* size (0 = byte, 1 = short, 2 = long) */
836 16, /* bitsize */
b34976b6 837 FALSE, /* pc_relative */
252b5132 838 0, /* bitpos */
7619e7c7
AM
839 complain_overflow_signed, /* complain_on_overflow */
840 ppc_elf_unhandled_reloc, /* special_function */
841 "R_PPC_DTPREL16", /* name */
b34976b6 842 FALSE, /* partial_inplace */
252b5132
RH
843 0, /* src_mask */
844 0xffff, /* dst_mask */
b34976b6 845 FALSE), /* pcrel_offset */
252b5132 846
7619e7c7
AM
847 /* Like DTPREL16, but no overflow. */
848 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH
849 0, /* rightshift */
850 1, /* size (0 = byte, 1 = short, 2 = long) */
851 16, /* bitsize */
b34976b6 852 FALSE, /* pc_relative */
252b5132 853 0, /* bitpos */
7619e7c7
AM
854 complain_overflow_dont, /* complain_on_overflow */
855 ppc_elf_unhandled_reloc, /* special_function */
856 "R_PPC_DTPREL16_LO", /* name */
b34976b6 857 FALSE, /* partial_inplace */
252b5132
RH
858 0, /* src_mask */
859 0xffff, /* dst_mask */
b34976b6 860 FALSE), /* pcrel_offset */
252b5132 861
7619e7c7
AM
862 /* Like DTPREL16_LO, but next higher group of 16 bits. */
863 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH
864 16, /* rightshift */
865 1, /* size (0 = byte, 1 = short, 2 = long) */
866 16, /* bitsize */
b34976b6 867 FALSE, /* pc_relative */
252b5132
RH
868 0, /* bitpos */
869 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
870 ppc_elf_unhandled_reloc, /* special_function */
871 "R_PPC_DTPREL16_HI", /* name */
b34976b6 872 FALSE, /* partial_inplace */
252b5132
RH
873 0, /* src_mask */
874 0xffff, /* dst_mask */
b34976b6 875 FALSE), /* pcrel_offset */
252b5132 876
7619e7c7
AM
877 /* Like DTPREL16_HI, but adjust for low 16 bits. */
878 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH
879 16, /* rightshift */
880 1, /* size (0 = byte, 1 = short, 2 = long) */
881 16, /* bitsize */
b34976b6 882 FALSE, /* pc_relative */
252b5132
RH
883 0, /* bitpos */
884 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
885 ppc_elf_unhandled_reloc, /* special_function */
886 "R_PPC_DTPREL16_HA", /* name */
b34976b6 887 FALSE, /* partial_inplace */
252b5132
RH
888 0, /* src_mask */
889 0xffff, /* dst_mask */
b34976b6 890 FALSE), /* pcrel_offset */
252b5132 891
7619e7c7
AM
892 /* Computes a tp-relative displacement, the difference between the value of
893 sym+add and the value of the thread pointer (r13). */
894 HOWTO (R_PPC_TPREL32,
895 0, /* rightshift */
896 2, /* size (0 = byte, 1 = short, 2 = long) */
897 32, /* bitsize */
898 FALSE, /* pc_relative */
899 0, /* bitpos */
900 complain_overflow_dont, /* complain_on_overflow */
901 ppc_elf_unhandled_reloc, /* special_function */
902 "R_PPC_TPREL32", /* name */
903 FALSE, /* partial_inplace */
904 0, /* src_mask */
905 0xffffffff, /* dst_mask */
906 FALSE), /* pcrel_offset */
907
908 /* A 16 bit tprel reloc. */
909 HOWTO (R_PPC_TPREL16,
252b5132
RH
910 0, /* rightshift */
911 1, /* size (0 = byte, 1 = short, 2 = long) */
912 16, /* bitsize */
b34976b6 913 FALSE, /* pc_relative */
252b5132 914 0, /* bitpos */
7619e7c7
AM
915 complain_overflow_signed, /* complain_on_overflow */
916 ppc_elf_unhandled_reloc, /* special_function */
917 "R_PPC_TPREL16", /* name */
b34976b6 918 FALSE, /* partial_inplace */
252b5132
RH
919 0, /* src_mask */
920 0xffff, /* dst_mask */
b34976b6 921 FALSE), /* pcrel_offset */
252b5132 922
7619e7c7
AM
923 /* Like TPREL16, but no overflow. */
924 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH
925 0, /* rightshift */
926 1, /* size (0 = byte, 1 = short, 2 = long) */
927 16, /* bitsize */
b34976b6 928 FALSE, /* pc_relative */
252b5132 929 0, /* bitpos */
7619e7c7
AM
930 complain_overflow_dont, /* complain_on_overflow */
931 ppc_elf_unhandled_reloc, /* special_function */
932 "R_PPC_TPREL16_LO", /* name */
b34976b6 933 FALSE, /* partial_inplace */
252b5132
RH
934 0, /* src_mask */
935 0xffff, /* dst_mask */
b34976b6 936 FALSE), /* pcrel_offset */
252b5132 937
7619e7c7
AM
938 /* Like TPREL16_LO, but next higher group of 16 bits. */
939 HOWTO (R_PPC_TPREL16_HI,
940 16, /* rightshift */
941 1, /* size (0 = byte, 1 = short, 2 = long) */
942 16, /* bitsize */
943 FALSE, /* pc_relative */
944 0, /* bitpos */
945 complain_overflow_dont, /* complain_on_overflow */
946 ppc_elf_unhandled_reloc, /* special_function */
947 "R_PPC_TPREL16_HI", /* name */
948 FALSE, /* partial_inplace */
949 0, /* src_mask */
950 0xffff, /* dst_mask */
951 FALSE), /* pcrel_offset */
952
953 /* Like TPREL16_HI, but adjust for low 16 bits. */
954 HOWTO (R_PPC_TPREL16_HA,
955 16, /* rightshift */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
957 16, /* bitsize */
958 FALSE, /* pc_relative */
959 0, /* bitpos */
960 complain_overflow_dont, /* complain_on_overflow */
961 ppc_elf_unhandled_reloc, /* special_function */
962 "R_PPC_TPREL16_HA", /* name */
963 FALSE, /* partial_inplace */
964 0, /* src_mask */
965 0xffff, /* dst_mask */
966 FALSE), /* pcrel_offset */
967
968 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
969 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
970 to the first entry. */
971 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH
972 0, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
b34976b6 975 FALSE, /* pc_relative */
252b5132
RH
976 0, /* bitpos */
977 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 980 FALSE, /* partial_inplace */
252b5132
RH
981 0, /* src_mask */
982 0xffff, /* dst_mask */
b34976b6 983 FALSE), /* pcrel_offset */
252b5132 984
7619e7c7
AM
985 /* Like GOT_TLSGD16, but no overflow. */
986 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 987 0, /* rightshift */
7619e7c7 988 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 989 16, /* bitsize */
b34976b6 990 FALSE, /* pc_relative */
252b5132 991 0, /* bitpos */
7619e7c7
AM
992 complain_overflow_dont, /* complain_on_overflow */
993 ppc_elf_unhandled_reloc, /* special_function */
994 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 995 FALSE, /* partial_inplace */
252b5132
RH
996 0, /* src_mask */
997 0xffff, /* dst_mask */
b34976b6 998 FALSE), /* pcrel_offset */
252b5132 999
7619e7c7
AM
1000 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1001 HOWTO (R_PPC_GOT_TLSGD16_HI,
1002 16, /* rightshift */
1003 1, /* size (0 = byte, 1 = short, 2 = long) */
1004 16, /* bitsize */
1005 FALSE, /* pc_relative */
1006 0, /* bitpos */
1007 complain_overflow_dont, /* complain_on_overflow */
1008 ppc_elf_unhandled_reloc, /* special_function */
1009 "R_PPC_GOT_TLSGD16_HI", /* name */
1010 FALSE, /* partial_inplace */
1011 0, /* src_mask */
1012 0xffff, /* dst_mask */
1013 FALSE), /* pcrel_offset */
252b5132 1014
7619e7c7
AM
1015 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1016 HOWTO (R_PPC_GOT_TLSGD16_HA,
1017 16, /* rightshift */
1018 1, /* size (0 = byte, 1 = short, 2 = long) */
1019 16, /* bitsize */
1020 FALSE, /* pc_relative */
1021 0, /* bitpos */
1022 complain_overflow_dont, /* complain_on_overflow */
1023 ppc_elf_unhandled_reloc, /* special_function */
1024 "R_PPC_GOT_TLSGD16_HA", /* name */
1025 FALSE, /* partial_inplace */
1026 0, /* src_mask */
1027 0xffff, /* dst_mask */
1028 FALSE), /* pcrel_offset */
1029
1030 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1031 with values (sym+add)@dtpmod and zero, and computes the offset to the
1032 first entry. */
1033 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH
1034 0, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 16, /* bitsize */
7619e7c7 1037 FALSE, /* pc_relative */
252b5132
RH
1038 0, /* bitpos */
1039 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1042 FALSE, /* partial_inplace */
252b5132
RH
1043 0, /* src_mask */
1044 0xffff, /* dst_mask */
b34976b6 1045 FALSE), /* pcrel_offset */
252b5132 1046
7619e7c7
AM
1047 /* Like GOT_TLSLD16, but no overflow. */
1048 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1049 0, /* rightshift */
7619e7c7
AM
1050 1, /* size (0 = byte, 1 = short, 2 = long) */
1051 16, /* bitsize */
b34976b6 1052 FALSE, /* pc_relative */
252b5132
RH
1053 0, /* bitpos */
1054 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1055 ppc_elf_unhandled_reloc, /* special_function */
1056 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1057 FALSE, /* partial_inplace */
252b5132 1058 0, /* src_mask */
7619e7c7 1059 0xffff, /* dst_mask */
b34976b6 1060 FALSE), /* pcrel_offset */
252b5132 1061
7619e7c7
AM
1062 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1063 HOWTO (R_PPC_GOT_TLSLD16_HI,
1064 16, /* rightshift */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 16, /* bitsize */
b34976b6 1067 FALSE, /* pc_relative */
252b5132
RH
1068 0, /* bitpos */
1069 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1070 ppc_elf_unhandled_reloc, /* special_function */
1071 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1072 FALSE, /* partial_inplace */
252b5132 1073 0, /* src_mask */
7619e7c7 1074 0xffff, /* dst_mask */
b34976b6 1075 FALSE), /* pcrel_offset */
252b5132 1076
7619e7c7
AM
1077 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1078 HOWTO (R_PPC_GOT_TLSLD16_HA,
1079 16, /* rightshift */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1081 16, /* bitsize */
1082 FALSE, /* pc_relative */
1083 0, /* bitpos */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 ppc_elf_unhandled_reloc, /* special_function */
1086 "R_PPC_GOT_TLSLD16_HA", /* name */
1087 FALSE, /* partial_inplace */
1088 0, /* src_mask */
1089 0xffff, /* dst_mask */
1090 FALSE), /* pcrel_offset */
1091
1092 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1093 the offset to the entry. */
1094 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH
1095 0, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1097 16, /* bitsize */
b34976b6 1098 FALSE, /* pc_relative */
252b5132
RH
1099 0, /* bitpos */
1100 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1101 ppc_elf_unhandled_reloc, /* special_function */
1102 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1103 FALSE, /* partial_inplace */
252b5132
RH
1104 0, /* src_mask */
1105 0xffff, /* dst_mask */
b34976b6 1106 FALSE), /* pcrel_offset */
252b5132 1107
7619e7c7
AM
1108 /* Like GOT_DTPREL16, but no overflow. */
1109 HOWTO (R_PPC_GOT_DTPREL16_LO,
1110 0, /* rightshift */
1111 1, /* size (0 = byte, 1 = short, 2 = long) */
1112 16, /* bitsize */
1113 FALSE, /* pc_relative */
1114 0, /* bitpos */
1115 complain_overflow_dont, /* complain_on_overflow */
1116 ppc_elf_unhandled_reloc, /* special_function */
1117 "R_PPC_GOT_DTPREL16_LO", /* name */
1118 FALSE, /* partial_inplace */
1119 0, /* src_mask */
1120 0xffff, /* dst_mask */
1121 FALSE), /* pcrel_offset */
252b5132 1122
7619e7c7
AM
1123 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1124 HOWTO (R_PPC_GOT_DTPREL16_HI,
1125 16, /* rightshift */
1126 1, /* size (0 = byte, 1 = short, 2 = long) */
1127 16, /* bitsize */
1128 FALSE, /* pc_relative */
1129 0, /* bitpos */
1130 complain_overflow_dont, /* complain_on_overflow */
1131 ppc_elf_unhandled_reloc, /* special_function */
1132 "R_PPC_GOT_DTPREL16_HI", /* name */
1133 FALSE, /* partial_inplace */
1134 0, /* src_mask */
1135 0xffff, /* dst_mask */
1136 FALSE), /* pcrel_offset */
252b5132 1137
7619e7c7
AM
1138 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1139 HOWTO (R_PPC_GOT_DTPREL16_HA,
1140 16, /* rightshift */
1141 1, /* size (0 = byte, 1 = short, 2 = long) */
1142 16, /* bitsize */
1143 FALSE, /* pc_relative */
1144 0, /* bitpos */
1145 complain_overflow_dont, /* complain_on_overflow */
1146 ppc_elf_unhandled_reloc, /* special_function */
1147 "R_PPC_GOT_DTPREL16_HA", /* name */
1148 FALSE, /* partial_inplace */
1149 0, /* src_mask */
1150 0xffff, /* dst_mask */
1151 FALSE), /* pcrel_offset */
c3668558 1152
7619e7c7
AM
1153 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1154 offset to the entry. */
1155 HOWTO (R_PPC_GOT_TPREL16,
1156 0, /* rightshift */
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1158 16, /* bitsize */
1159 FALSE, /* pc_relative */
1160 0, /* bitpos */
1161 complain_overflow_signed, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc, /* special_function */
1163 "R_PPC_GOT_TPREL16", /* name */
1164 FALSE, /* partial_inplace */
1165 0, /* src_mask */
1166 0xffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1168
1169 /* Like GOT_TPREL16, but no overflow. */
1170 HOWTO (R_PPC_GOT_TPREL16_LO,
1171 0, /* rightshift */
1172 1, /* size (0 = byte, 1 = short, 2 = long) */
1173 16, /* bitsize */
1174 FALSE, /* pc_relative */
1175 0, /* bitpos */
1176 complain_overflow_dont, /* complain_on_overflow */
1177 ppc_elf_unhandled_reloc, /* special_function */
1178 "R_PPC_GOT_TPREL16_LO", /* name */
1179 FALSE, /* partial_inplace */
1180 0, /* src_mask */
1181 0xffff, /* dst_mask */
1182 FALSE), /* pcrel_offset */
1183
1184 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1185 HOWTO (R_PPC_GOT_TPREL16_HI,
1186 16, /* rightshift */
1187 1, /* size (0 = byte, 1 = short, 2 = long) */
1188 16, /* bitsize */
1189 FALSE, /* pc_relative */
1190 0, /* bitpos */
1191 complain_overflow_dont, /* complain_on_overflow */
1192 ppc_elf_unhandled_reloc, /* special_function */
1193 "R_PPC_GOT_TPREL16_HI", /* name */
1194 FALSE, /* partial_inplace */
1195 0, /* src_mask */
1196 0xffff, /* dst_mask */
1197 FALSE), /* pcrel_offset */
1198
1199 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1200 HOWTO (R_PPC_GOT_TPREL16_HA,
1201 16, /* rightshift */
1202 1, /* size (0 = byte, 1 = short, 2 = long) */
1203 16, /* bitsize */
1204 FALSE, /* pc_relative */
1205 0, /* bitpos */
1206 complain_overflow_dont, /* complain_on_overflow */
1207 ppc_elf_unhandled_reloc, /* special_function */
1208 "R_PPC_GOT_TPREL16_HA", /* name */
1209 FALSE, /* partial_inplace */
1210 0, /* src_mask */
1211 0xffff, /* dst_mask */
1212 FALSE), /* pcrel_offset */
1213
1214 /* The remaining relocs are from the Embedded ELF ABI, and are not
1215 in the SVR4 ELF ABI. */
1216
1217 /* 32 bit value resulting from the addend minus the symbol. */
1218 HOWTO (R_PPC_EMB_NADDR32, /* type */
1219 0, /* rightshift */
1220 2, /* size (0 = byte, 1 = short, 2 = long) */
1221 32, /* bitsize */
1222 FALSE, /* pc_relative */
1223 0, /* bitpos */
1224 complain_overflow_bitfield, /* complain_on_overflow */
1225 bfd_elf_generic_reloc, /* special_function */
1226 "R_PPC_EMB_NADDR32", /* name */
1227 FALSE, /* partial_inplace */
1228 0, /* src_mask */
1229 0xffffffff, /* dst_mask */
1230 FALSE), /* pcrel_offset */
1231
1232 /* 16 bit value resulting from the addend minus the symbol. */
1233 HOWTO (R_PPC_EMB_NADDR16, /* type */
1234 0, /* rightshift */
1235 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 16, /* bitsize */
1237 FALSE, /* pc_relative */
1238 0, /* bitpos */
1239 complain_overflow_bitfield, /* complain_on_overflow */
1240 bfd_elf_generic_reloc, /* special_function */
1241 "R_PPC_EMB_NADDR16", /* name */
1242 FALSE, /* partial_inplace */
1243 0, /* src_mask */
1244 0xffff, /* dst_mask */
1245 FALSE), /* pcrel_offset */
1246
1247 /* 16 bit value resulting from the addend minus the symbol. */
1248 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1249 0, /* rightshift */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1251 16, /* bitsize */
1252 FALSE, /* pc_relative */
1253 0, /* bitpos */
1254 complain_overflow_dont,/* complain_on_overflow */
1255 bfd_elf_generic_reloc, /* special_function */
1256 "R_PPC_EMB_ADDR16_LO", /* name */
1257 FALSE, /* partial_inplace */
1258 0, /* src_mask */
1259 0xffff, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1261
1262 /* The high order 16 bits of the addend minus the symbol. */
1263 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1264 16, /* rightshift */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1266 16, /* bitsize */
1267 FALSE, /* pc_relative */
1268 0, /* bitpos */
1269 complain_overflow_dont, /* complain_on_overflow */
1270 bfd_elf_generic_reloc, /* special_function */
1271 "R_PPC_EMB_NADDR16_HI", /* name */
1272 FALSE, /* partial_inplace */
1273 0, /* src_mask */
1274 0xffff, /* dst_mask */
1275 FALSE), /* pcrel_offset */
1276
1277 /* The high order 16 bits of the result of the addend minus the address,
1278 plus 1 if the contents of the low 16 bits, treated as a signed number,
1279 is negative. */
1280 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_dont, /* complain_on_overflow */
25dbc73a
AM
1287 ppc_elf_addr16_ha_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HA", /* name */
1289 FALSE, /* partial_inplace */
1290 0, /* src_mask */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 /* 16 bit value resulting from allocating a 4 byte word to hold an
1295 address in the .sdata section, and returning the offset from
1296 _SDA_BASE_ for that relocation. */
1297 HOWTO (R_PPC_EMB_SDAI16, /* type */
1298 0, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 16, /* bitsize */
1301 FALSE, /* pc_relative */
1302 0, /* bitpos */
1303 complain_overflow_bitfield, /* complain_on_overflow */
1304 bfd_elf_generic_reloc, /* special_function */
1305 "R_PPC_EMB_SDAI16", /* name */
1306 FALSE, /* partial_inplace */
1307 0, /* src_mask */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1310
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata2 section, and returning the offset from
1313 _SDA2_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1315 0, /* rightshift */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 16, /* bitsize */
1318 FALSE, /* pc_relative */
1319 0, /* bitpos */
1320 complain_overflow_bitfield, /* complain_on_overflow */
1321 bfd_elf_generic_reloc, /* special_function */
1322 "R_PPC_EMB_SDA2I16", /* name */
1323 FALSE, /* partial_inplace */
1324 0, /* src_mask */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1327
1328 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1329 small data items. */
1330 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1331 0, /* rightshift */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1333 16, /* bitsize */
1334 FALSE, /* pc_relative */
1335 0, /* bitpos */
1336 complain_overflow_signed, /* complain_on_overflow */
1337 bfd_elf_generic_reloc, /* special_function */
1338 "R_PPC_EMB_SDA2REL", /* name */
1339 FALSE, /* partial_inplace */
1340 0, /* src_mask */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1343
1344 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1345 signed offset from the appropriate base, and filling in the register
1346 field with the appropriate register (0, 2, or 13). */
1347 HOWTO (R_PPC_EMB_SDA21, /* type */
1348 0, /* rightshift */
1349 2, /* size (0 = byte, 1 = short, 2 = long) */
1350 16, /* bitsize */
1351 FALSE, /* pc_relative */
1352 0, /* bitpos */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 bfd_elf_generic_reloc, /* special_function */
1355 "R_PPC_EMB_SDA21", /* name */
1356 FALSE, /* partial_inplace */
1357 0, /* src_mask */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* Relocation not handled: R_PPC_EMB_MRKREF */
1362 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1363 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1364 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1365 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1366 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1367
1368 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1369 in the 16 bit signed offset from the appropriate base, and filling in the
1370 register field with the appropriate register (0, 2, or 13). */
1371 HOWTO (R_PPC_EMB_RELSDA, /* type */
1372 0, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1374 16, /* bitsize */
1375 TRUE, /* pc_relative */
1376 0, /* bitpos */
1377 complain_overflow_signed, /* complain_on_overflow */
1378 bfd_elf_generic_reloc, /* special_function */
1379 "R_PPC_EMB_RELSDA", /* name */
1380 FALSE, /* partial_inplace */
1381 0, /* src_mask */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1384
e054468f
AM
1385 HOWTO (R_PPC_IRELATIVE, /* type */
1386 0, /* rightshift */
1387 2, /* size (0 = byte, 1 = short, 2 = long) */
1388 32, /* bitsize */
1389 FALSE, /* pc_relative */
1390 0, /* bitpos */
1391 complain_overflow_bitfield, /* complain_on_overflow */
1392 bfd_elf_generic_reloc, /* special_function */
1393 "R_PPC_IRELATIVE", /* name */
1394 FALSE, /* partial_inplace */
1395 0, /* src_mask */
1396 0xffffffff, /* dst_mask */
1397 FALSE), /* pcrel_offset */
1398
d7128ce4
AM
1399 /* A 16 bit relative relocation. */
1400 HOWTO (R_PPC_REL16, /* type */
1401 0, /* rightshift */
1402 1, /* size (0 = byte, 1 = short, 2 = long) */
1403 16, /* bitsize */
1404 TRUE, /* pc_relative */
1405 0, /* bitpos */
1406 complain_overflow_bitfield, /* complain_on_overflow */
1407 bfd_elf_generic_reloc, /* special_function */
1408 "R_PPC_REL16", /* name */
1409 FALSE, /* partial_inplace */
1410 0, /* src_mask */
1411 0xffff, /* dst_mask */
1412 TRUE), /* pcrel_offset */
1413
1414 /* A 16 bit relative relocation without overflow. */
1415 HOWTO (R_PPC_REL16_LO, /* type */
1416 0, /* rightshift */
1417 1, /* size (0 = byte, 1 = short, 2 = long) */
1418 16, /* bitsize */
1419 TRUE, /* pc_relative */
1420 0, /* bitpos */
1421 complain_overflow_dont,/* complain_on_overflow */
1422 bfd_elf_generic_reloc, /* special_function */
1423 "R_PPC_REL16_LO", /* name */
1424 FALSE, /* partial_inplace */
1425 0, /* src_mask */
1426 0xffff, /* dst_mask */
1427 TRUE), /* pcrel_offset */
1428
1429 /* The high order 16 bits of a relative address. */
1430 HOWTO (R_PPC_REL16_HI, /* type */
1431 16, /* rightshift */
1432 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 16, /* bitsize */
1434 TRUE, /* pc_relative */
1435 0, /* bitpos */
1436 complain_overflow_dont, /* complain_on_overflow */
1437 bfd_elf_generic_reloc, /* special_function */
1438 "R_PPC_REL16_HI", /* name */
1439 FALSE, /* partial_inplace */
1440 0, /* src_mask */
1441 0xffff, /* dst_mask */
1442 TRUE), /* pcrel_offset */
1443
1444 /* The high order 16 bits of a relative address, plus 1 if the contents of
1445 the low 16 bits, treated as a signed number, is negative. */
1446 HOWTO (R_PPC_REL16_HA, /* type */
1447 16, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1449 16, /* bitsize */
1450 TRUE, /* pc_relative */
1451 0, /* bitpos */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc_elf_addr16_ha_reloc, /* special_function */
1454 "R_PPC_REL16_HA", /* name */
1455 FALSE, /* partial_inplace */
1456 0, /* src_mask */
1457 0xffff, /* dst_mask */
1458 TRUE), /* pcrel_offset */
1459
25dbc73a
AM
1460 /* GNU extension to record C++ vtable hierarchy. */
1461 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1462 0, /* rightshift */
1463 0, /* size (0 = byte, 1 = short, 2 = long) */
1464 0, /* bitsize */
1465 FALSE, /* pc_relative */
1466 0, /* bitpos */
1467 complain_overflow_dont, /* complain_on_overflow */
1468 NULL, /* special_function */
1469 "R_PPC_GNU_VTINHERIT", /* name */
1470 FALSE, /* partial_inplace */
1471 0, /* src_mask */
1472 0, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1474
1475 /* GNU extension to record C++ vtable member usage. */
1476 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1477 0, /* rightshift */
1478 0, /* size (0 = byte, 1 = short, 2 = long) */
1479 0, /* bitsize */
1480 FALSE, /* pc_relative */
1481 0, /* bitpos */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 NULL, /* special_function */
1484 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM
1485 FALSE, /* partial_inplace */
1486 0, /* src_mask */
25dbc73a 1487 0, /* dst_mask */
7619e7c7
AM
1488 FALSE), /* pcrel_offset */
1489
25dbc73a
AM
1490 /* Phony reloc to handle AIX style TOC entries. */
1491 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM
1492 0, /* rightshift */
1493 1, /* size (0 = byte, 1 = short, 2 = long) */
1494 16, /* bitsize */
1495 FALSE, /* pc_relative */
1496 0, /* bitpos */
25dbc73a 1497 complain_overflow_signed, /* complain_on_overflow */
7619e7c7 1498 bfd_elf_generic_reloc, /* special_function */
25dbc73a 1499 "R_PPC_TOC16", /* name */
7619e7c7
AM
1500 FALSE, /* partial_inplace */
1501 0, /* src_mask */
1502 0xffff, /* dst_mask */
1503 FALSE), /* pcrel_offset */
25dbc73a
AM
1504};
1505\f
1506/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1507
1508static void
1509ppc_elf_howto_init (void)
1510{
1511 unsigned int i, type;
1512
1513 for (i = 0;
1514 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1515 i++)
1516 {
1517 type = ppc_elf_howto_raw[i].type;
1518 if (type >= (sizeof (ppc_elf_howto_table)
1519 / sizeof (ppc_elf_howto_table[0])))
1520 abort ();
1521 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1522 }
1523}
1524
1525static reloc_howto_type *
1526ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1527 bfd_reloc_code_real_type code)
1528{
1529 enum elf_ppc_reloc_type r;
1530
1531 /* Initialize howto table if not already done. */
1532 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1533 ppc_elf_howto_init ();
1534
1535 switch (code)
1536 {
1537 default:
1538 return NULL;
1539
1540 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1541 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1542 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1543 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1544 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1545 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1546 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1547 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1548 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1549 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1550 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1551 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1552 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1553 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1554 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1555 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1556 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1557 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1558 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1559 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1560 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1561 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1562 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1563 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1564 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1565 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1566 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1567 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1568 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1569 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1570 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1571 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1572 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1573 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1574 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1575 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
727fc41e
AM
1576 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1577 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
25dbc73a
AM
1578 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1579 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1580 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1581 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1582 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1583 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1584 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1585 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1586 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1587 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1588 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1589 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1590 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1591 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1592 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1593 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1594 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1595 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1596 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1597 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1598 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1599 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1600 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1601 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1602 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1603 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1604 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1605 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1606 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1607 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1608 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1609 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1610 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1611 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1612 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1613 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1614 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1615 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1616 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1617 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1618 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1619 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1620 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
d7128ce4
AM
1621 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1622 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1623 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1624 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
25dbc73a
AM
1625 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1626 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1627 }
1628
1629 return ppc_elf_howto_table[r];
1630};
1631
157090f7
AM
1632static reloc_howto_type *
1633ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1634 const char *r_name)
1635{
1636 unsigned int i;
1637
1638 for (i = 0;
1639 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1640 i++)
1641 if (ppc_elf_howto_raw[i].name != NULL
1642 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1643 return &ppc_elf_howto_raw[i];
1644
1645 return NULL;
1646}
1647
25dbc73a
AM
1648/* Set the howto pointer for a PowerPC ELF reloc. */
1649
1650static void
1651ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1652 arelent *cache_ptr,
1653 Elf_Internal_Rela *dst)
1654{
1655 /* Initialize howto table if not already done. */
1656 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1657 ppc_elf_howto_init ();
1658
1659 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1660 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
375de94a
AM
1661
1662 /* Just because the above assert didn't trigger doesn't mean that
1663 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1664 if (!cache_ptr->howto)
1665 {
1666 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1667 abfd, ELF32_R_TYPE (dst->r_info));
1668 bfd_set_error (bfd_error_bad_value);
1669
1670 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1671 }
25dbc73a
AM
1672}
1673
d7128ce4 1674/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM
1675
1676static bfd_reloc_status_type
1677ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1678 arelent *reloc_entry,
1679 asymbol *symbol,
1680 void *data ATTRIBUTE_UNUSED,
1681 asection *input_section,
1682 bfd *output_bfd,
1683 char **error_message ATTRIBUTE_UNUSED)
1684{
1685 bfd_vma relocation;
1686
1687 if (output_bfd != NULL)
1688 {
1689 reloc_entry->address += input_section->output_offset;
1690 return bfd_reloc_ok;
1691 }
1692
1693 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1694 return bfd_reloc_outofrange;
1695
1696 if (bfd_is_com_section (symbol->section))
1697 relocation = 0;
1698 else
1699 relocation = symbol->value;
1700
1701 relocation += symbol->section->output_section->vma;
1702 relocation += symbol->section->output_offset;
1703 relocation += reloc_entry->addend;
d7128ce4
AM
1704 if (reloc_entry->howto->pc_relative)
1705 relocation -= reloc_entry->address;
25dbc73a
AM
1706
1707 reloc_entry->addend += (relocation & 0x8000) << 1;
1708
1709 return bfd_reloc_continue;
1710}
1711
1712static bfd_reloc_status_type
1713ppc_elf_unhandled_reloc (bfd *abfd,
1714 arelent *reloc_entry,
1715 asymbol *symbol,
1716 void *data,
1717 asection *input_section,
1718 bfd *output_bfd,
1719 char **error_message)
1720{
1721 /* If this is a relocatable link (output_bfd test tells us), just
1722 call the generic function. Any adjustment will be done at final
1723 link time. */
1724 if (output_bfd != NULL)
1725 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1726 input_section, output_bfd, error_message);
1727
1728 if (error_message != NULL)
1729 {
1730 static char buf[60];
1731 sprintf (buf, _("generic linker can't handle %s"),
1732 reloc_entry->howto->name);
1733 *error_message = buf;
1734 }
1735 return bfd_reloc_dangerous;
1736}
1737\f
1738/* Sections created by the linker. */
1739
1740typedef struct elf_linker_section
1741{
c9a2f333 1742 /* Pointer to the bfd section. */
25dbc73a 1743 asection *section;
c9a2f333
AM
1744 /* Section name. */
1745 const char *name;
1746 /* Associated bss section name. */
1747 const char *bss_name;
1748 /* Associated symbol name. */
1749 const char *sym_name;
046183de
AM
1750 /* Associated symbol. */
1751 struct elf_link_hash_entry *sym;
25dbc73a
AM
1752} elf_linker_section_t;
1753
1754/* Linked list of allocated pointer entries. This hangs off of the
1755 symbol lists, and provides allows us to return different pointers,
1756 based on different addend's. */
1757
1758typedef struct elf_linker_section_pointers
1759{
1760 /* next allocated pointer for this symbol */
1761 struct elf_linker_section_pointers *next;
1762 /* offset of pointer from beginning of section */
1763 bfd_vma offset;
1764 /* addend used */
1765 bfd_vma addend;
1766 /* which linker section this is */
1767 elf_linker_section_t *lsect;
25dbc73a
AM
1768} elf_linker_section_pointers_t;
1769
1770struct ppc_elf_obj_tdata
1771{
1772 struct elf_obj_tdata elf;
1773
1774 /* A mapping from local symbols to offsets into the various linker
1775 sections added. This is index by the symbol index. */
1776 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM
1777
1778 /* Flags used to auto-detect plt type. */
1779 unsigned int makes_plt_call : 1;
1780 unsigned int has_rel16 : 1;
25dbc73a
AM
1781};
1782
1783#define ppc_elf_tdata(bfd) \
1784 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 1785
25dbc73a
AM
1786#define elf_local_ptr_offsets(bfd) \
1787 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 1788
0c8d6e5c
AM
1789#define is_ppc_elf(bfd) \
1790 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1791 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1792
25dbc73a 1793/* Override the generic function because we store some extras. */
7619e7c7 1794
25dbc73a
AM
1795static bfd_boolean
1796ppc_elf_mkobject (bfd *abfd)
1797{
0ffa91dd
NC
1798 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1799 PPC32_ELF_TDATA);
25dbc73a 1800}
7619e7c7 1801
25dbc73a
AM
1802/* Fix bad default arch selected for a 32 bit input bfd when the
1803 default is 64 bit. */
7619e7c7 1804
25dbc73a
AM
1805static bfd_boolean
1806ppc_elf_object_p (bfd *abfd)
1807{
1808 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1809 {
1810 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 1811
25dbc73a
AM
1812 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1813 {
1814 /* Relies on arch after 64 bit default being 32 bit default. */
1815 abfd->arch_info = abfd->arch_info->next;
1816 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1817 }
1818 }
1819 return TRUE;
1820}
7619e7c7 1821
25dbc73a 1822/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 1823
25dbc73a
AM
1824static bfd_boolean
1825ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1826{
1827 BFD_ASSERT (!elf_flags_init (abfd)
1828 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 1829
25dbc73a
AM
1830 elf_elfheader (abfd)->e_flags = flags;
1831 elf_flags_init (abfd) = TRUE;
1832 return TRUE;
1833}
1834
25dbc73a 1835/* Support for core dump NOTE sections. */
deaaf2f3 1836
b34976b6 1837static bfd_boolean
25dbc73a 1838ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 1839{
25dbc73a
AM
1840 int offset;
1841 unsigned int size;
252b5132 1842
25dbc73a
AM
1843 switch (note->descsz)
1844 {
1845 default:
1846 return FALSE;
252b5132 1847
25dbc73a
AM
1848 case 268: /* Linux/PPC. */
1849 /* pr_cursig */
1850 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 1851
25dbc73a
AM
1852 /* pr_pid */
1853 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 1854
25dbc73a
AM
1855 /* pr_reg */
1856 offset = 72;
1857 size = 192;
deaaf2f3 1858
25dbc73a
AM
1859 break;
1860 }
deaaf2f3 1861
25dbc73a
AM
1862 /* Make a ".reg/999" section. */
1863 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1864 size, note->descpos + offset);
1865}
252b5132 1866
25dbc73a
AM
1867static bfd_boolean
1868ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1869{
1870 switch (note->descsz)
deaaf2f3 1871 {
25dbc73a
AM
1872 default:
1873 return FALSE;
deaaf2f3 1874
25dbc73a
AM
1875 case 128: /* Linux/PPC elf_prpsinfo. */
1876 elf_tdata (abfd)->core_program
1877 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1878 elf_tdata (abfd)->core_command
1879 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1880 }
9abc968f 1881
25dbc73a
AM
1882 /* Note that for some reason, a spurious space is tacked
1883 onto the end of the args in some (at least one anyway)
1884 implementations, so strip it off if it exists. */
70bccea4 1885
25dbc73a
AM
1886 {
1887 char *command = elf_tdata (abfd)->core_command;
1888 int n = strlen (command);
70bccea4 1889
25dbc73a
AM
1890 if (0 < n && command[n - 1] == ' ')
1891 command[n - 1] = '\0';
1892 }
deaaf2f3 1893
25dbc73a
AM
1894 return TRUE;
1895}
deaaf2f3 1896
183e98be
AM
1897static char *
1898ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1899{
1900 switch (note_type)
1901 {
1902 default:
1903 return NULL;
1904
1905 case NT_PRPSINFO:
1906 {
1907 char data[128];
1908 va_list ap;
1909
1910 va_start (ap, note_type);
1911 memset (data, 0, 32);
1912 strncpy (data + 32, va_arg (ap, const char *), 16);
1913 strncpy (data + 48, va_arg (ap, const char *), 80);
1914 va_end (ap);
1915 return elfcore_write_note (abfd, buf, bufsiz,
1916 "CORE", note_type, data, sizeof (data));
1917 }
1918
1919 case NT_PRSTATUS:
1920 {
1921 char data[268];
1922 va_list ap;
1923 long pid;
1924 int cursig;
1925 const void *greg;
1926
1927 va_start (ap, note_type);
1928 memset (data, 0, 72);
1929 pid = va_arg (ap, long);
1930 bfd_put_32 (abfd, pid, data + 24);
1931 cursig = va_arg (ap, int);
1932 bfd_put_16 (abfd, cursig, data + 12);
1933 greg = va_arg (ap, const void *);
1934 memcpy (data + 72, greg, 192);
1935 memset (data + 264, 0, 4);
1936 va_end (ap);
1937 return elfcore_write_note (abfd, buf, bufsiz,
1938 "CORE", note_type, data, sizeof (data));
1939 }
1940 }
1941}
1942
25dbc73a
AM
1943/* Return address for Ith PLT stub in section PLT, for relocation REL
1944 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 1945
25dbc73a
AM
1946static bfd_vma
1947ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1948 const asection *plt ATTRIBUTE_UNUSED,
1949 const arelent *rel)
1950{
1951 return rel->address;
1952}
deaaf2f3 1953
25dbc73a 1954/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
1955 is called when bfd_section_from_shdr finds a section with an unknown
1956 type. */
deaaf2f3 1957
25dbc73a 1958static bfd_boolean
6dc132d9
L
1959ppc_elf_section_from_shdr (bfd *abfd,
1960 Elf_Internal_Shdr *hdr,
1961 const char *name,
1962 int shindex)
25dbc73a
AM
1963{
1964 asection *newsect;
1965 flagword flags;
d1c6de6f 1966
6dc132d9 1967 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 1968 return FALSE;
deaaf2f3 1969
25dbc73a
AM
1970 newsect = hdr->bfd_section;
1971 flags = bfd_get_section_flags (abfd, newsect);
1972 if (hdr->sh_flags & SHF_EXCLUDE)
1973 flags |= SEC_EXCLUDE;
9abc968f 1974
25dbc73a
AM
1975 if (hdr->sh_type == SHT_ORDERED)
1976 flags |= SEC_SORT_ENTRIES;
d1c6de6f 1977
25dbc73a
AM
1978 bfd_set_section_flags (abfd, newsect, flags);
1979 return TRUE;
1980}
1981
1982/* Set up any other section flags and such that may be necessary. */
1983
1984static bfd_boolean
1985ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1986 Elf_Internal_Shdr *shdr,
1987 asection *asect)
1988{
d30e8e7c 1989 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
25dbc73a
AM
1990 shdr->sh_flags |= SHF_EXCLUDE;
1991
1992 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1993 shdr->sh_type = SHT_ORDERED;
1994
1995 return TRUE;
1996}
1997
1998/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1999 need to bump up the number of section headers. */
2000
2001static int
a6b96beb
AM
2002ppc_elf_additional_program_headers (bfd *abfd,
2003 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM
2004{
2005 asection *s;
2006 int ret = 0;
d1c6de6f 2007
25dbc73a
AM
2008 s = bfd_get_section_by_name (abfd, ".sbss2");
2009 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2010 ++ret;
d1c6de6f 2011
25dbc73a
AM
2012 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2013 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2014 ++ret;
deaaf2f3 2015
25dbc73a
AM
2016 return ret;
2017}
deaaf2f3 2018
25dbc73a
AM
2019/* Add extra PPC sections -- Note, for now, make .sbss2 and
2020 .PPC.EMB.sbss0 a normal section, and not a bss section so
2021 that the linker doesn't crater when trying to make more than
2022 2 sections. */
e656e369 2023
b35d266b 2024static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 2025{
0112cd26
NC
2026 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2027 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2028 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2029 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2030 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2031 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2032 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2033 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2034 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2035 { NULL, 0, 0, 0, 0 }
7f4d3958
L
2036};
2037
551b43fd
AM
2038/* This is what we want for new plt/got. */
2039static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 2040 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM
2041
2042static const struct bfd_elf_special_section *
2043ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 2044{
b35d266b 2045 const struct bfd_elf_special_section *ssect;
551b43fd
AM
2046
2047 /* See if this is one of the special sections. */
2048 if (sec->name == NULL)
2049 return NULL;
2050
2051 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2052 sec->use_rela_p);
2053 if (ssect != NULL)
2054 {
2055 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2056 ssect = &ppc_alt_plt;
2057 return ssect;
2058 }
2059
2060 return _bfd_elf_get_sec_type_attr (abfd, sec);
2061}
25dbc73a
AM
2062\f
2063/* Very simple linked list structure for recording apuinfo values. */
2064typedef struct apuinfo_list
2065{
2066 struct apuinfo_list *next;
2067 unsigned long value;
2068}
2069apuinfo_list;
e656e369 2070
25dbc73a 2071static apuinfo_list *head;
deaaf2f3 2072
deaaf2f3 2073
25dbc73a
AM
2074static void
2075apuinfo_list_init (void)
2076{
2077 head = NULL;
2078}
9abc968f 2079
25dbc73a
AM
2080static void
2081apuinfo_list_add (unsigned long value)
2082{
2083 apuinfo_list *entry = head;
deaaf2f3 2084
25dbc73a
AM
2085 while (entry != NULL)
2086 {
2087 if (entry->value == value)
2088 return;
2089 entry = entry->next;
2090 }
b4a38de6 2091
25dbc73a
AM
2092 entry = bfd_malloc (sizeof (* entry));
2093 if (entry == NULL)
2094 return;
e656e369 2095
25dbc73a
AM
2096 entry->value = value;
2097 entry->next = head;
2098 head = entry;
2099}
9abc968f 2100
25dbc73a
AM
2101static unsigned
2102apuinfo_list_length (void)
2103{
2104 apuinfo_list *entry;
2105 unsigned long count;
9abc968f 2106
25dbc73a
AM
2107 for (entry = head, count = 0;
2108 entry;
2109 entry = entry->next)
2110 ++ count;
e656e369 2111
25dbc73a
AM
2112 return count;
2113}
eea6121a 2114
25dbc73a
AM
2115static inline unsigned long
2116apuinfo_list_element (unsigned long number)
2117{
2118 apuinfo_list * entry;
e656e369 2119
25dbc73a
AM
2120 for (entry = head;
2121 entry && number --;
2122 entry = entry->next)
2123 ;
252b5132 2124
25dbc73a
AM
2125 return entry ? entry->value : 0;
2126}
2127
2128static void
2129apuinfo_list_finish (void)
2130{
2131 apuinfo_list *entry;
2132
2133 for (entry = head; entry;)
252b5132 2134 {
25dbc73a
AM
2135 apuinfo_list *next = entry->next;
2136 free (entry);
2137 entry = next;
2138 }
9abc968f 2139
25dbc73a
AM
2140 head = NULL;
2141}
9abc968f 2142
25dbc73a
AM
2143#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2144#define APUINFO_LABEL "APUinfo"
9abc968f 2145
25dbc73a
AM
2146/* Scan the input BFDs and create a linked list of
2147 the APUinfo values that will need to be emitted. */
9abc968f 2148
25dbc73a
AM
2149static void
2150ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2151{
2152 bfd *ibfd;
2153 asection *asec;
2154 char *buffer;
2155 unsigned num_input_sections;
2156 bfd_size_type output_section_size;
2157 unsigned i;
2158 unsigned num_entries;
2159 unsigned long offset;
2160 unsigned long length;
2161 const char *error_message = NULL;
9abc968f 2162
25dbc73a
AM
2163 if (link_info == NULL)
2164 return;
9abc968f 2165
25dbc73a
AM
2166 /* Scan the input bfds, looking for apuinfo sections. */
2167 num_input_sections = 0;
2168 output_section_size = 0;
252b5132 2169
25dbc73a 2170 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2171 {
25dbc73a
AM
2172 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2173 if (asec)
252b5132 2174 {
25dbc73a
AM
2175 ++ num_input_sections;
2176 output_section_size += asec->size;
252b5132 2177 }
252b5132
RH
2178 }
2179
25dbc73a
AM
2180 /* We need at least one input sections
2181 in order to make merging worthwhile. */
2182 if (num_input_sections < 1)
2183 return;
deaaf2f3 2184
25dbc73a
AM
2185 /* Just make sure that the output section exists as well. */
2186 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2187 if (asec == NULL)
2188 return;
252b5132 2189
25dbc73a
AM
2190 /* Allocate a buffer for the contents of the input sections. */
2191 buffer = bfd_malloc (output_section_size);
2192 if (buffer == NULL)
2193 return;
252b5132 2194
25dbc73a
AM
2195 offset = 0;
2196 apuinfo_list_init ();
252b5132 2197
25dbc73a
AM
2198 /* Read in the input sections contents. */
2199 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2200 {
25dbc73a
AM
2201 unsigned long datum;
2202 char *ptr;
252b5132 2203
25dbc73a
AM
2204 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2205 if (asec == NULL)
2206 continue;
252b5132 2207
25dbc73a
AM
2208 length = asec->size;
2209 if (length < 24)
2210 {
2211 error_message = _("corrupt or empty %s section in %B");
2212 goto fail;
2213 }
252b5132 2214
25dbc73a
AM
2215 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2216 || (bfd_bread (buffer + offset, length, ibfd) != length))
2217 {
2218 error_message = _("unable to read in %s section from %B");
2219 goto fail;
2220 }
252b5132 2221
25dbc73a
AM
2222 /* Process the contents of the section. */
2223 ptr = buffer + offset;
2224 error_message = _("corrupt %s section in %B");
252b5132 2225
25dbc73a
AM
2226 /* Verify the contents of the header. Note - we have to
2227 extract the values this way in order to allow for a
2228 host whose endian-ness is different from the target. */
2229 datum = bfd_get_32 (ibfd, ptr);
2230 if (datum != sizeof APUINFO_LABEL)
2231 goto fail;
252b5132 2232
25dbc73a
AM
2233 datum = bfd_get_32 (ibfd, ptr + 8);
2234 if (datum != 0x2)
2235 goto fail;
252b5132 2236
25dbc73a
AM
2237 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2238 goto fail;
252b5132 2239
25dbc73a
AM
2240 /* Get the number of bytes used for apuinfo entries. */
2241 datum = bfd_get_32 (ibfd, ptr + 4);
2242 if (datum + 20 != length)
2243 goto fail;
2244
2245 /* Make sure that we do not run off the end of the section. */
2246 if (offset + length > output_section_size)
2247 goto fail;
2248
2249 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2250 for (i = 0; i < datum; i += 4)
2251 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2252
2253 /* Update the offset. */
2254 offset += length;
252b5132
RH
2255 }
2256
25dbc73a 2257 error_message = NULL;
252b5132 2258
25dbc73a
AM
2259 /* Compute the size of the output section. */
2260 num_entries = apuinfo_list_length ();
2261 output_section_size = 20 + num_entries * 4;
252b5132 2262
25dbc73a
AM
2263 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2264
2265 if (! bfd_set_section_size (abfd, asec, output_section_size))
2266 ibfd = abfd,
2267 error_message = _("warning: unable to set size of %s section in %B");
2268
2269 fail:
2270 free (buffer);
2271
2272 if (error_message)
2273 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2274}
252b5132 2275
25dbc73a
AM
2276/* Prevent the output section from accumulating the input sections'
2277 contents. We have already stored this in our linked list structure. */
252b5132 2278
25dbc73a
AM
2279static bfd_boolean
2280ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2281 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM
2282 asection *asec,
2283 bfd_byte *contents ATTRIBUTE_UNUSED)
2284{
2285 return (apuinfo_list_length ()
2286 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
252b5132
RH
2287}
2288
25dbc73a
AM
2289/* Finally we can generate the output section. */
2290
2291static void
2292ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2293{
25dbc73a
AM
2294 bfd_byte *buffer;
2295 asection *asec;
2296 unsigned i;
2297 unsigned num_entries;
2298 bfd_size_type length;
7619e7c7 2299
25dbc73a
AM
2300 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2301 if (asec == NULL)
2302 return;
2303
2304 if (apuinfo_list_length () == 0)
2305 return;
2306
2307 length = asec->size;
2308 if (length < 20)
2309 return;
2310
2311 buffer = bfd_malloc (length);
2312 if (buffer == NULL)
7619e7c7 2313 {
25dbc73a
AM
2314 (*_bfd_error_handler)
2315 (_("failed to allocate space for new APUinfo section."));
2316 return;
7619e7c7 2317 }
7619e7c7 2318
25dbc73a
AM
2319 /* Create the apuinfo header. */
2320 num_entries = apuinfo_list_length ();
2321 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2322 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2323 bfd_put_32 (abfd, 0x2, buffer + 8);
2324 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2325
25dbc73a
AM
2326 length = 20;
2327 for (i = 0; i < num_entries; i++)
feee612b 2328 {
25dbc73a
AM
2329 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2330 length += 4;
feee612b 2331 }
feee612b 2332
25dbc73a
AM
2333 if (length != asec->size)
2334 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2335
25dbc73a
AM
2336 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2337 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2338
25dbc73a
AM
2339 free (buffer);
2340
2341 apuinfo_list_finish ();
252b5132 2342}
25dbc73a 2343\f
7382d32a 2344static bfd_boolean
c6dd29ce 2345is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
7382d32a 2346{
c6dd29ce 2347 bfd_byte buf[GLINK_ENTRY_SIZE];
7382d32a 2348
c6dd29ce 2349 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
7382d32a
AM
2350 return FALSE;
2351
c6dd29ce
AM
2352 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2353 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2354 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2355 && bfd_get_32 (abfd, buf + 12) == BCTR);
7382d32a
AM
2356}
2357
468392fb
AM
2358static bfd_boolean
2359section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2360{
2361 bfd_vma vma = *(bfd_vma *) ptr;
2362 return ((section->flags & SEC_ALLOC) != 0
2363 && section->vma <= vma
2364 && vma < section->vma + section->size);
2365}
2366
2367static long
2368ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2369 long dynsymcount, asymbol **dynsyms,
2370 asymbol **ret)
2371{
2372 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2373 asection *plt, *relplt, *dynamic, *glink;
2374 bfd_vma glink_vma = 0;
2375 bfd_vma resolv_vma = 0;
2376 bfd_vma stub_vma;
2377 asymbol *s;
2378 arelent *p;
2379 long count, i;
2380 size_t size;
2381 char *names;
2382 bfd_byte buf[4];
2383
2384 *ret = NULL;
2385
2386 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2387 return 0;
2388
2389 if (dynsymcount <= 0)
2390 return 0;
2391
2392 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2393 if (relplt == NULL)
2394 return 0;
2395
2396 plt = bfd_get_section_by_name (abfd, ".plt");
2397 if (plt == NULL)
2398 return 0;
2399
2400 /* Call common code to handle old-style executable PLTs. */
2401 if (elf_section_flags (plt) & SHF_EXECINSTR)
2402 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2403 dynsymcount, dynsyms, ret);
2404
2405 /* If this object was prelinked, the prelinker stored the address
2406 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2407 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2408 if (dynamic != NULL)
2409 {
2410 bfd_byte *dynbuf, *extdyn, *extdynend;
2411 size_t extdynsize;
2412 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2413
2414 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2415 return -1;
2416
2417 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2418 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2419
2420 extdyn = dynbuf;
2421 extdynend = extdyn + dynamic->size;
2422 for (; extdyn < extdynend; extdyn += extdynsize)
2423 {
2424 Elf_Internal_Dyn dyn;
2425 (*swap_dyn_in) (abfd, extdyn, &dyn);
2426
2427 if (dyn.d_tag == DT_NULL)
2428 break;
2429
2430 if (dyn.d_tag == DT_PPC_GOT)
2431 {
2432 unsigned int g_o_t = dyn.d_un.d_val;
2433 asection *got = bfd_get_section_by_name (abfd, ".got");
2434 if (got != NULL
2435 && bfd_get_section_contents (abfd, got, buf,
2436 g_o_t - got->vma + 4, 4))
2437 glink_vma = bfd_get_32 (abfd, buf);
2438 break;
2439 }
2440 }
2441 free (dynbuf);
2442 }
2443
2444 /* Otherwise we read the first plt entry. */
2445 if (glink_vma == 0)
2446 {
2447 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2448 glink_vma = bfd_get_32 (abfd, buf);
2449 }
2450
2451 if (glink_vma == 0)
2452 return 0;
2453
2454 /* The .glink section usually does not survive the final
2455 link; search for the section (usually .text) where the
2456 glink stubs now reside. */
2457 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2458 if (glink == NULL)
2459 return 0;
2460
2461 /* Determine glink PLT resolver by reading the relative branch
2462 from the first glink stub. */
2463 if (bfd_get_section_contents (abfd, glink, buf,
2464 glink_vma - glink->vma, 4))
2465 {
2466 unsigned int insn = bfd_get_32 (abfd, buf);
2467
2468 /* The first glink stub may either branch to the resolver ... */
2469 insn ^= B;
2470 if ((insn & ~0x3fffffc) == 0)
2471 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2472
2473 /* ... or fall through a bunch of NOPs. */
2474 else if ((insn ^ B ^ NOP) == 0)
2475 for (i = 4;
2476 bfd_get_section_contents (abfd, glink, buf,
2477 glink_vma - glink->vma + i, 4);
2478 i += 4)
2479 if (bfd_get_32 (abfd, buf) != NOP)
2480 {
2481 resolv_vma = glink_vma + i;
2482 break;
2483 }
2484 }
2485
7382d32a
AM
2486 count = relplt->size / sizeof (Elf32_External_Rela);
2487 stub_vma = glink_vma - (bfd_vma) count * 16;
2488 /* If the stubs are those for -shared/-pie then we might have
2489 multiple stubs for each plt entry. If that is the case then
2490 there is no way to associate stubs with their plt entries short
2491 of figuring out the GOT pointer value used in the stub. */
c6dd29ce
AM
2492 if (!is_nonpic_glink_stub (abfd, glink,
2493 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
7382d32a
AM
2494 return 0;
2495
468392fb
AM
2496 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2497 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2498 return -1;
2499
468392fb
AM
2500 size = count * sizeof (asymbol);
2501 p = relplt->relocation;
2502 for (i = 0; i < count; i++, p++)
e054468f
AM
2503 {
2504 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2505 if (p->addend != 0)
2506 size += sizeof ("+0x") - 1 + 8;
2507 }
468392fb
AM
2508
2509 size += sizeof (asymbol) + sizeof ("__glink");
2510
2511 if (resolv_vma)
2512 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2513
2514 s = *ret = bfd_malloc (size);
2515 if (s == NULL)
2516 return -1;
2517
2518 names = (char *) (s + count + 1 + (resolv_vma != 0));
2519 p = relplt->relocation;
2520 for (i = 0; i < count; i++, p++)
2521 {
2522 size_t len;
2523
2524 *s = **p->sym_ptr_ptr;
2525 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2526 we are defining a symbol, ensure one of them is set. */
2527 if ((s->flags & BSF_LOCAL) == 0)
2528 s->flags |= BSF_GLOBAL;
6ba2a415 2529 s->flags |= BSF_SYNTHETIC;
468392fb
AM
2530 s->section = glink;
2531 s->value = stub_vma - glink->vma;
2532 s->name = names;
2533 s->udata.p = NULL;
2534 len = strlen ((*p->sym_ptr_ptr)->name);
2535 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2536 names += len;
e054468f
AM
2537 if (p->addend != 0)
2538 {
2539 memcpy (names, "+0x", sizeof ("+0x") - 1);
2540 names += sizeof ("+0x") - 1;
2541 bfd_sprintf_vma (abfd, names, p->addend);
2542 names += strlen (names);
2543 }
468392fb
AM
2544 memcpy (names, "@plt", sizeof ("@plt"));
2545 names += sizeof ("@plt");
2546 ++s;
2547 stub_vma += 16;
2548 }
2549
2550 /* Add a symbol at the start of the glink branch table. */
86a4952b 2551 memset (s, 0, sizeof *s);
468392fb 2552 s->the_bfd = abfd;
6ba2a415 2553 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
2554 s->section = glink;
2555 s->value = glink_vma - glink->vma;
2556 s->name = names;
2557 memcpy (names, "__glink", sizeof ("__glink"));
2558 names += sizeof ("__glink");
2559 s++;
2560 count++;
2561
2562 if (resolv_vma)
2563 {
2564 /* Add a symbol for the glink PLT resolver. */
86a4952b 2565 memset (s, 0, sizeof *s);
468392fb 2566 s->the_bfd = abfd;
6ba2a415 2567 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
2568 s->section = glink;
2569 s->value = resolv_vma - glink->vma;
2570 s->name = names;
2571 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2572 names += sizeof ("__glink_PLTresolve");
2573 s++;
2574 count++;
2575 }
2576
2577 return count;
2578}
2579\f
25dbc73a
AM
2580/* The following functions are specific to the ELF linker, while
2581 functions above are used generally. They appear in this file more
2582 or less in the order in which they are called. eg.
2583 ppc_elf_check_relocs is called early in the link process,
2584 ppc_elf_finish_dynamic_sections is one of the last functions
2585 called. */
252b5132 2586
25dbc73a
AM
2587/* The PPC linker needs to keep track of the number of relocs that it
2588 decides to copy as dynamic relocs in check_relocs for each symbol.
2589 This is so that it can later discard them if they are found to be
2590 unnecessary. We store the information in a field extending the
2591 regular ELF linker hash table. */
ae9a127f 2592
25dbc73a 2593struct ppc_elf_dyn_relocs
252b5132 2594{
25dbc73a 2595 struct ppc_elf_dyn_relocs *next;
252b5132 2596
25dbc73a
AM
2597 /* The input section of the reloc. */
2598 asection *sec;
252b5132 2599
25dbc73a
AM
2600 /* Total number of relocs copied for the input section. */
2601 bfd_size_type count;
252b5132 2602
25dbc73a
AM
2603 /* Number of pc-relative relocs copied for the input section. */
2604 bfd_size_type pc_count;
2605};
252b5132 2606
a6aa5195
AM
2607/* Track PLT entries needed for a given symbol. We might need more
2608 than one glink entry per symbol. */
2609struct plt_entry
2610{
2611 struct plt_entry *next;
2612
2613 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2614 This field stores the offset into .got2 used to initialise the
2615 GOT pointer reg. It will always be at least 32768 (and for
2616 current gcc this is the only offset used). */
2617 bfd_vma addend;
2618
2619 /* The .got2 section. */
2620 asection *sec;
2621
2622 /* PLT refcount or offset. */
2623 union
2624 {
2625 bfd_signed_vma refcount;
2626 bfd_vma offset;
2627 } plt;
2628
2629 /* .glink stub offset. */
2630 bfd_vma glink_offset;
2631};
2632
1d483afe 2633/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM
2634 selects those that must be copied when linking a shared library,
2635 even when the symbol is local. */
252b5132 2636
1d483afe
AM
2637static int
2638must_be_dyn_reloc (struct bfd_link_info *info,
2639 enum elf_ppc_reloc_type r_type)
2640{
2641 switch (r_type)
2642 {
2643 default:
2644 return 1;
2645
2646 case R_PPC_REL24:
2647 case R_PPC_REL14:
2648 case R_PPC_REL14_BRTAKEN:
2649 case R_PPC_REL14_BRNTAKEN:
2650 case R_PPC_REL32:
2651 return 0;
2652
2653 case R_PPC_TPREL32:
2654 case R_PPC_TPREL16:
2655 case R_PPC_TPREL16_LO:
2656 case R_PPC_TPREL16_HI:
2657 case R_PPC_TPREL16_HA:
2658 return !info->executable;
2659 }
2660}
252b5132 2661
25dbc73a
AM
2662/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2663 copying dynamic variables from a shared lib into an app's dynbss
2664 section, and instead use a dynamic relocation to point into the
2665 shared lib. */
2666#define ELIMINATE_COPY_RELOCS 1
252b5132 2667
25dbc73a 2668/* PPC ELF linker hash entry. */
252b5132 2669
25dbc73a
AM
2670struct ppc_elf_link_hash_entry
2671{
2672 struct elf_link_hash_entry elf;
252b5132 2673
25dbc73a
AM
2674 /* If this symbol is used in the linker created sections, the processor
2675 specific backend uses this field to map the field into the offset
2676 from the beginning of the section. */
2677 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 2678
25dbc73a
AM
2679 /* Track dynamic relocs copied for this symbol. */
2680 struct ppc_elf_dyn_relocs *dyn_relocs;
252b5132 2681
25dbc73a
AM
2682 /* Contexts in which symbol is used in the GOT (or TOC).
2683 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2684 corresponding relocs are encountered during check_relocs.
2685 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2686 indicate the corresponding GOT entry type is not needed. */
2687#define TLS_GD 1 /* GD reloc. */
2688#define TLS_LD 2 /* LD reloc. */
2689#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2690#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2691#define TLS_TLS 16 /* Any TLS reloc. */
2692#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
e054468f 2693#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
25dbc73a 2694 char tls_mask;
4dc4a9a5
DJ
2695
2696 /* Nonzero if we have seen a small data relocation referring to this
2697 symbol. */
2698 unsigned char has_sda_refs;
25dbc73a 2699};
252b5132 2700
25dbc73a
AM
2701#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2702
2703/* PPC ELF linker hash table. */
2704
2705struct ppc_elf_link_hash_table
2706{
2707 struct elf_link_hash_table elf;
2708
2709 /* Short-cuts to get to dynamic linker sections. */
2710 asection *got;
2711 asection *relgot;
d7128ce4 2712 asection *glink;
25dbc73a
AM
2713 asection *plt;
2714 asection *relplt;
e054468f
AM
2715 asection *iplt;
2716 asection *reliplt;
25dbc73a
AM
2717 asection *dynbss;
2718 asection *relbss;
2719 asection *dynsbss;
2720 asection *relsbss;
c9a2f333 2721 elf_linker_section_t sdata[2];
25dbc73a
AM
2722 asection *sbss;
2723
016687f8
AM
2724 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2725 asection *srelplt2;
2726
2727 /* The .got.plt section (VxWorks only)*/
2728 asection *sgotplt;
2729
1d483afe 2730 /* Shortcut to __tls_get_addr. */
25dbc73a 2731 struct elf_link_hash_entry *tls_get_addr;
252b5132 2732
016687f8
AM
2733 /* The bfd that forced an old-style PLT. */
2734 bfd *old_bfd;
2735
25dbc73a
AM
2736 /* TLS local dynamic got entry handling. */
2737 union {
2738 bfd_signed_vma refcount;
2739 bfd_vma offset;
2740 } tlsld_got;
252b5132 2741
c6dd29ce 2742 /* Offset of branch table to PltResolve function in glink. */
d7128ce4
AM
2743 bfd_vma glink_pltresolve;
2744
3b36f7e6
AM
2745 /* Size of reserved GOT entries. */
2746 unsigned int got_header_size;
2747 /* Non-zero if allocating the header left a gap. */
2748 unsigned int got_gap;
2749
4a3dc543
RS
2750 /* The type of PLT we have chosen to use. */
2751 enum ppc_elf_plt_type plt_type;
2752
0ba07910
AM
2753 /* Set if we should emit symbols for stubs. */
2754 unsigned int emit_stub_syms:1;
2755
9d8504b1 2756 /* True if the target system is VxWorks. */
016687f8 2757 unsigned int is_vxworks:1;
9d8504b1
PB
2758
2759 /* The size of PLT entries. */
2760 int plt_entry_size;
2761 /* The distance between adjacent PLT slots. */
2762 int plt_slot_size;
2763 /* The size of the first PLT entry. */
2764 int plt_initial_entry_size;
016687f8 2765
87d72d41
AM
2766 /* Small local sym cache. */
2767 struct sym_cache sym_cache;
25dbc73a 2768};
252b5132 2769
25dbc73a 2770/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 2771
25dbc73a
AM
2772#define ppc_elf_hash_table(p) \
2773 ((struct ppc_elf_link_hash_table *) (p)->hash)
252b5132 2774
25dbc73a 2775/* Create an entry in a PPC ELF linker hash table. */
252b5132 2776
25dbc73a
AM
2777static struct bfd_hash_entry *
2778ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2779 struct bfd_hash_table *table,
2780 const char *string)
252b5132 2781{
25dbc73a
AM
2782 /* Allocate the structure if it has not already been allocated by a
2783 subclass. */
2784 if (entry == NULL)
2785 {
2786 entry = bfd_hash_allocate (table,
2787 sizeof (struct ppc_elf_link_hash_entry));
2788 if (entry == NULL)
2789 return entry;
2790 }
252b5132 2791
25dbc73a
AM
2792 /* Call the allocation method of the superclass. */
2793 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2794 if (entry != NULL)
2795 {
2796 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2797 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2798 ppc_elf_hash_entry (entry)->tls_mask = 0;
2799 }
252b5132 2800
25dbc73a 2801 return entry;
252b5132 2802}
3dab13f6 2803
25dbc73a 2804/* Create a PPC ELF linker hash table. */
3dab13f6 2805
25dbc73a
AM
2806static struct bfd_link_hash_table *
2807ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 2808{
25dbc73a 2809 struct ppc_elf_link_hash_table *ret;
3dab13f6 2810
25dbc73a
AM
2811 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2812 if (ret == NULL)
2813 return NULL;
3dab13f6 2814
66eb6687
AM
2815 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2816 ppc_elf_link_hash_newfunc,
2817 sizeof (struct ppc_elf_link_hash_entry)))
3dab13f6 2818 {
25dbc73a
AM
2819 free (ret);
2820 return NULL;
2821 }
58111eb7 2822
a6aa5195
AM
2823 ret->elf.init_plt_refcount.refcount = 0;
2824 ret->elf.init_plt_refcount.glist = NULL;
2825 ret->elf.init_plt_offset.offset = 0;
2826 ret->elf.init_plt_offset.glist = NULL;
2827
c9a2f333
AM
2828 ret->sdata[0].name = ".sdata";
2829 ret->sdata[0].sym_name = "_SDA_BASE_";
2830 ret->sdata[0].bss_name = ".sbss";
2831
2832 ret->sdata[1].name = ".sdata2";
2833 ret->sdata[1].sym_name = "_SDA2_BASE_";
2834 ret->sdata[1].bss_name = ".sbss2";
2835
9d8504b1
PB
2836 ret->plt_entry_size = 12;
2837 ret->plt_slot_size = 8;
2838 ret->plt_initial_entry_size = 72;
9d8504b1 2839
25dbc73a
AM
2840 return &ret->elf.root;
2841}
3dab13f6 2842
9d8504b1 2843/* Create .got and the related sections. */
3dab13f6 2844
25dbc73a
AM
2845static bfd_boolean
2846ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2847{
2848 struct ppc_elf_link_hash_table *htab;
2849 asection *s;
2850 flagword flags;
3dab13f6 2851
25dbc73a
AM
2852 if (!_bfd_elf_create_got_section (abfd, info))
2853 return FALSE;
3dab13f6 2854
25dbc73a
AM
2855 htab = ppc_elf_hash_table (info);
2856 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2857 if (s == NULL)
2858 abort ();
3dab13f6 2859
9d8504b1
PB
2860 if (htab->is_vxworks)
2861 {
2862 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2863 if (!htab->sgotplt)
2864 abort ();
2865 }
2866 else
2867 {
2868 /* The powerpc .got has a blrl instruction in it. Mark it
2869 executable. */
2870 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2871 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2872 if (!bfd_set_section_flags (abfd, s, flags))
2873 return FALSE;
2874 }
3dab13f6 2875
64e77c6d
L
2876 htab->relgot = bfd_get_section_by_name (abfd, ".rela.got");
2877 if (!htab->relgot)
2878 abort ();
3dab13f6 2879
25dbc73a
AM
2880 return TRUE;
2881}
3dab13f6 2882
e054468f
AM
2883static bfd_boolean
2884ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
2885{
2886 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2887 asection *s;
2888 flagword flags;
2889
2890 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
2891 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2892 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
2893 htab->glink = s;
2894 if (s == NULL
2895 || !bfd_set_section_alignment (abfd, s, 4))
2896 return FALSE;
2897
2898 flags = SEC_ALLOC | SEC_LINKER_CREATED;
2899 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
2900 htab->iplt = s;
2901 if (s == NULL
2902 || !bfd_set_section_alignment (abfd, s, 4))
2903 return FALSE;
2904
2905 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2906 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2907 s = bfd_make_section_with_flags (abfd, ".rela.iplt", flags);
2908 htab->reliplt = s;
2909 if (s == NULL
2910 || ! bfd_set_section_alignment (abfd, s, 2))
2911 return FALSE;
2912 return TRUE;
2913}
2914
25dbc73a
AM
2915/* We have to create .dynsbss and .rela.sbss here so that they get mapped
2916 to output sections (just like _bfd_elf_create_dynamic_sections has
2917 to create .dynbss and .rela.bss). */
3dab13f6 2918
25dbc73a
AM
2919static bfd_boolean
2920ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2921{
2922 struct ppc_elf_link_hash_table *htab;
2923 asection *s;
2924 flagword flags;
3dab13f6 2925
25dbc73a 2926 htab = ppc_elf_hash_table (info);
3dab13f6 2927
25dbc73a
AM
2928 if (htab->got == NULL
2929 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
2930 return FALSE;
2931
25dbc73a
AM
2932 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2933 return FALSE;
3dab13f6 2934
e054468f
AM
2935 if (htab->glink == NULL
2936 && !ppc_elf_create_glink (abfd, info))
d7128ce4 2937 return FALSE;
3dab13f6 2938
25dbc73a 2939 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
3b36f7e6
AM
2940 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2941 SEC_ALLOC | SEC_LINKER_CREATED);
2942 htab->dynsbss = s;
3496cb2a 2943 if (s == NULL)
25dbc73a 2944 return FALSE;
3dab13f6 2945
25dbc73a
AM
2946 if (! info->shared)
2947 {
2948 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
e054468f
AM
2949 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2950 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
d7128ce4 2951 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 2952 htab->relsbss = s;
25dbc73a 2953 if (s == NULL
25dbc73a
AM
2954 || ! bfd_set_section_alignment (abfd, s, 2))
2955 return FALSE;
2956 }
3dab13f6 2957
711de32c
RS
2958 if (htab->is_vxworks
2959 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2960 return FALSE;
9d8504b1 2961
25dbc73a
AM
2962 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2963 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2964 if (s == NULL)
2965 abort ();
3dab13f6 2966
3b36f7e6 2967 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
2968 if (htab->plt_type == PLT_VXWORKS)
2969 /* The VxWorks PLT is a loaded section with contents. */
2970 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
2971 return bfd_set_section_flags (abfd, s, flags);
2972}
3dab13f6 2973
25dbc73a 2974/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 2975
25dbc73a 2976static void
fcfa13d2 2977ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
2978 struct elf_link_hash_entry *dir,
2979 struct elf_link_hash_entry *ind)
2980{
2981 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 2982
25dbc73a
AM
2983 edir = (struct ppc_elf_link_hash_entry *) dir;
2984 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 2985
25dbc73a
AM
2986 if (eind->dyn_relocs != NULL)
2987 {
2988 if (edir->dyn_relocs != NULL)
3dab13f6 2989 {
25dbc73a
AM
2990 struct ppc_elf_dyn_relocs **pp;
2991 struct ppc_elf_dyn_relocs *p;
3dab13f6 2992
fcfa13d2 2993 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
2994 list. Merge any entries against the same section. */
2995 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 2996 {
25dbc73a
AM
2997 struct ppc_elf_dyn_relocs *q;
2998
2999 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3000 if (q->sec == p->sec)
3001 {
3002 q->pc_count += p->pc_count;
3003 q->count += p->count;
3004 *pp = p->next;
3005 break;
3006 }
3007 if (q == NULL)
3008 pp = &p->next;
3dab13f6 3009 }
25dbc73a 3010 *pp = edir->dyn_relocs;
3dab13f6 3011 }
25dbc73a
AM
3012
3013 edir->dyn_relocs = eind->dyn_relocs;
3014 eind->dyn_relocs = NULL;
3dab13f6 3015 }
3dab13f6 3016
25dbc73a 3017 edir->tls_mask |= eind->tls_mask;
4dc4a9a5 3018 edir->has_sda_refs |= eind->has_sda_refs;
3dab13f6 3019
a6aa5195
AM
3020 /* If called to transfer flags for a weakdef during processing
3021 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3022 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3023 if (!(ELIMINATE_COPY_RELOCS
3024 && eind->elf.root.type != bfd_link_hash_indirect
3025 && edir->elf.dynamic_adjusted))
3026 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3027
3028 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3029 edir->elf.ref_regular |= eind->elf.ref_regular;
3030 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3031 edir->elf.needs_plt |= eind->elf.needs_plt;
0eb4a168 3032 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
a6aa5195
AM
3033
3034 /* If we were called to copy over info for a weak sym, that's all. */
3035 if (eind->elf.root.type != bfd_link_hash_indirect)
3036 return;
3037
3038 /* Copy over the GOT refcount entries that we may have already seen to
3039 the symbol which just became indirect. */
fcfa13d2
AM
3040 edir->elf.got.refcount += eind->elf.got.refcount;
3041 eind->elf.got.refcount = 0;
a6aa5195
AM
3042
3043 /* And plt entries. */
3044 if (eind->elf.plt.plist != NULL)
3045 {
3046 if (edir->elf.plt.plist != NULL)
3047 {
3048 struct plt_entry **entp;
3049 struct plt_entry *ent;
3050
3051 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3052 {
3053 struct plt_entry *dent;
3054
3055 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3056 if (dent->sec == ent->sec && dent->addend == ent->addend)
3057 {
3058 dent->plt.refcount += ent->plt.refcount;
3059 *entp = ent->next;
3060 break;
3061 }
3062 if (dent == NULL)
3063 entp = &ent->next;
3064 }
3065 *entp = edir->elf.plt.plist;
3066 }
3067
3068 edir->elf.plt.plist = eind->elf.plt.plist;
3069 eind->elf.plt.plist = NULL;
3070 }
3071
fcfa13d2 3072 if (eind->elf.dynindx != -1)
25dbc73a 3073 {
fcfa13d2
AM
3074 if (edir->elf.dynindx != -1)
3075 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3076 edir->elf.dynstr_index);
a6aa5195
AM
3077 edir->elf.dynindx = eind->elf.dynindx;
3078 edir->elf.dynstr_index = eind->elf.dynstr_index;
3079 eind->elf.dynindx = -1;
3080 eind->elf.dynstr_index = 0;
25dbc73a 3081 }
25dbc73a 3082}
3dab13f6 3083
25dbc73a
AM
3084/* Hook called by the linker routine which adds symbols from an object
3085 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3086
25dbc73a
AM
3087static bfd_boolean
3088ppc_elf_add_symbol_hook (bfd *abfd,
3089 struct bfd_link_info *info,
3090 Elf_Internal_Sym *sym,
3091 const char **namep ATTRIBUTE_UNUSED,
3092 flagword *flagsp ATTRIBUTE_UNUSED,
3093 asection **secp,
3094 bfd_vma *valp)
3095{
3096 if (sym->st_shndx == SHN_COMMON
3097 && !info->relocatable
0c8d6e5c
AM
3098 && is_ppc_elf (info->output_bfd)
3099 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
3100 {
3101 /* Common symbols less than or equal to -G nn bytes are automatically
3102 put into .sbss. */
3103 struct ppc_elf_link_hash_table *htab;
3dab13f6 3104
25dbc73a
AM
3105 htab = ppc_elf_hash_table (info);
3106 if (htab->sbss == NULL)
3107 {
644285ef 3108 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3109
644285ef
AM
3110 if (!htab->elf.dynobj)
3111 htab->elf.dynobj = abfd;
3112
3496cb2a
L
3113 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3114 ".sbss",
3115 flags);
3116 if (htab->sbss == NULL)
25dbc73a 3117 return FALSE;
3dab13f6 3118 }
3dab13f6 3119
25dbc73a
AM
3120 *secp = htab->sbss;
3121 *valp = sym->st_size;
3122 }
3dab13f6 3123
e054468f
AM
3124 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3125 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
3126
25dbc73a 3127 return TRUE;
3dab13f6
AM
3128}
3129\f
046183de
AM
3130static bfd_boolean
3131create_sdata_sym (struct ppc_elf_link_hash_table *htab,
3132 elf_linker_section_t *lsect)
3133{
3134 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3135 TRUE, FALSE, TRUE);
3136 if (lsect->sym == NULL)
3137 return FALSE;
3138 if (lsect->sym->root.type == bfd_link_hash_new)
3139 lsect->sym->non_elf = 0;
3140 lsect->sym->ref_regular = 1;
3141 return TRUE;
3142}
3143
c9a2f333 3144/* Create a special linker section. */
25dbc73a 3145
c9a2f333 3146static bfd_boolean
55fd94b0
AM
3147ppc_elf_create_linker_section (bfd *abfd,
3148 struct bfd_link_info *info,
c9a2f333
AM
3149 flagword flags,
3150 elf_linker_section_t *lsect)
252b5132 3151{
58111eb7 3152 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 3153 asection *s;
58111eb7 3154
c9a2f333
AM
3155 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3156 | SEC_LINKER_CREATED);
58111eb7
AM
3157
3158 /* Record the first bfd that needs the special sections. */
3159 if (!htab->elf.dynobj)
3160 htab->elf.dynobj = abfd;
3161
3496cb2a
L
3162 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3163 lsect->name,
3164 flags);
76750a2f 3165 if (s == NULL
76750a2f 3166 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 3167 return FALSE;
76750a2f 3168 lsect->section = s;
58111eb7 3169
046183de 3170 return create_sdata_sym (htab, lsect);
252b5132 3171}
252b5132 3172
25dbc73a
AM
3173/* Find a linker generated pointer with a given addend and type. */
3174
3175static elf_linker_section_pointers_t *
3176elf_find_pointer_linker_section
3177 (elf_linker_section_pointers_t *linker_pointers,
3178 bfd_vma addend,
3179 elf_linker_section_t *lsect)
252b5132 3180{
25dbc73a
AM
3181 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3182 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3183 return linker_pointers;
252b5132 3184
25dbc73a
AM
3185 return NULL;
3186}
3187
3188/* Allocate a pointer to live in a linker created section. */
3189
3190static bfd_boolean
3191elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM
3192 elf_linker_section_t *lsect,
3193 struct elf_link_hash_entry *h,
3194 const Elf_Internal_Rela *rel)
3195{
3196 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3197 elf_linker_section_pointers_t *linker_section_ptr;
3198 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3199 bfd_size_type amt;
3200
3201 BFD_ASSERT (lsect != NULL);
3202
3203 /* Is this a global symbol? */
3204 if (h != NULL)
3205 {
3206 struct ppc_elf_link_hash_entry *eh;
3207
3208 /* Has this symbol already been allocated? If so, our work is done. */
3209 eh = (struct ppc_elf_link_hash_entry *) h;
3210 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3211 rel->r_addend,
3212 lsect))
3213 return TRUE;
3214
3215 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3216 }
3217 else
3218 {
0c8d6e5c 3219 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3220
25dbc73a
AM
3221 /* Allocation of a pointer to a local symbol. */
3222 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3223
3224 /* Allocate a table to hold the local symbols if first time. */
3225 if (!ptr)
3226 {
0ffa91dd 3227 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3228
3229 amt = num_symbols;
3230 amt *= sizeof (elf_linker_section_pointers_t *);
3231 ptr = bfd_zalloc (abfd, amt);
3232
3233 if (!ptr)
3234 return FALSE;
3235
3236 elf_local_ptr_offsets (abfd) = ptr;
3237 }
3238
3239 /* Has this symbol already been allocated? If so, our work is done. */
3240 if (elf_find_pointer_linker_section (ptr[r_symndx],
3241 rel->r_addend,
3242 lsect))
3243 return TRUE;
252b5132 3244
25dbc73a 3245 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3246 }
41fcb14e 3247
25dbc73a
AM
3248 /* Allocate space for a pointer in the linker section, and allocate
3249 a new pointer record from internal memory. */
3250 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3251 amt = sizeof (elf_linker_section_pointers_t);
3252 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3253
25dbc73a 3254 if (!linker_section_ptr)
7619e7c7 3255 return FALSE;
41fcb14e 3256
25dbc73a
AM
3257 linker_section_ptr->next = *ptr_linker_section_ptr;
3258 linker_section_ptr->addend = rel->r_addend;
3259 linker_section_ptr->lsect = lsect;
25dbc73a 3260 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3261
25dbc73a
AM
3262 linker_section_ptr->offset = lsect->section->size;
3263 lsect->section->size += 4;
7619e7c7 3264
25dbc73a
AM
3265#ifdef DEBUG
3266 fprintf (stderr,
3267 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3268 lsect->name, (long) linker_section_ptr->offset,
3269 (long) lsect->section->size);
3270#endif
7619e7c7
AM
3271
3272 return TRUE;
41fcb14e
AM
3273}
3274
e054468f 3275static struct plt_entry **
25dbc73a
AM
3276update_local_sym_info (bfd *abfd,
3277 Elf_Internal_Shdr *symtab_hdr,
3278 unsigned long r_symndx,
3279 int tls_type)
252b5132 3280{
25dbc73a 3281 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
e054468f 3282 struct plt_entry **local_plt;
25dbc73a 3283 char *local_got_tls_masks;
252b5132 3284
25dbc73a 3285 if (local_got_refcounts == NULL)
252b5132 3286 {
25dbc73a
AM
3287 bfd_size_type size = symtab_hdr->sh_info;
3288
e054468f
AM
3289 size *= (sizeof (*local_got_refcounts)
3290 + sizeof (*local_plt)
3291 + sizeof (*local_got_tls_masks));
25dbc73a
AM
3292 local_got_refcounts = bfd_zalloc (abfd, size);
3293 if (local_got_refcounts == NULL)
e054468f 3294 return NULL;
25dbc73a 3295 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3296 }
41fcb14e 3297
e054468f
AM
3298 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3299 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
25dbc73a 3300 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
3301 if (tls_type != PLT_IFUNC)
3302 local_got_refcounts[r_symndx] += 1;
3303 return local_plt + r_symndx;
25dbc73a 3304}
41fcb14e 3305
a6aa5195 3306static bfd_boolean
3ec01793 3307update_plt_info (bfd *abfd, struct plt_entry **plist,
a6aa5195
AM
3308 asection *sec, bfd_vma addend)
3309{
3310 struct plt_entry *ent;
3311
3ec01793 3312 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3313 if (ent->sec == sec && ent->addend == addend)
3314 break;
3315 if (ent == NULL)
3316 {
3317 bfd_size_type amt = sizeof (*ent);
3318 ent = bfd_alloc (abfd, amt);
3319 if (ent == NULL)
3320 return FALSE;
3ec01793 3321 ent->next = *plist;
a6aa5195
AM
3322 ent->sec = sec;
3323 ent->addend = addend;
3324 ent->plt.refcount = 0;
3ec01793 3325 *plist = ent;
a6aa5195
AM
3326 }
3327 ent->plt.refcount += 1;
3328 return TRUE;
3329}
3330
3331static struct plt_entry *
3ec01793 3332find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
a6aa5195
AM
3333{
3334 struct plt_entry *ent;
3335
3336 if (addend < 32768)
3337 sec = NULL;
3ec01793 3338 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3339 if (ent->sec == sec && ent->addend == addend)
3340 break;
3341 return ent;
3342}
3343
e054468f
AM
3344static bfd_boolean
3345is_branch_reloc (enum elf_ppc_reloc_type r_type)
3346{
3347 return (r_type == R_PPC_PLTREL24
3348 || r_type == R_PPC_LOCAL24PC
3349 || r_type == R_PPC_REL24
3350 || r_type == R_PPC_REL14
3351 || r_type == R_PPC_REL14_BRTAKEN
3352 || r_type == R_PPC_REL14_BRNTAKEN
3353 || r_type == R_PPC_ADDR24
3354 || r_type == R_PPC_ADDR14
3355 || r_type == R_PPC_ADDR14_BRTAKEN
3356 || r_type == R_PPC_ADDR14_BRNTAKEN);
3357}
3358
25dbc73a
AM
3359static void
3360bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3361{
3362 (*_bfd_error_handler)
3363 (_("%B: relocation %s cannot be used when making a shared object"),
3364 abfd,
3365 ppc_elf_howto_table[r_type]->name);
3366 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3367}
3368
25dbc73a
AM
3369/* Look through the relocs for a section during the first phase, and
3370 allocate space in the global offset table or procedure linkage
3371 table. */
252b5132 3372
b34976b6 3373static bfd_boolean
25dbc73a
AM
3374ppc_elf_check_relocs (bfd *abfd,
3375 struct bfd_link_info *info,
3376 asection *sec,
3377 const Elf_Internal_Rela *relocs)
252b5132 3378{
7619e7c7 3379 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3380 Elf_Internal_Shdr *symtab_hdr;
3381 struct elf_link_hash_entry **sym_hashes;
3382 const Elf_Internal_Rela *rel;
3383 const Elf_Internal_Rela *rel_end;
a6aa5195 3384 asection *got2, *sreloc;
727fc41e 3385 struct elf_link_hash_entry *tga;
25dbc73a
AM
3386
3387 if (info->relocatable)
3388 return TRUE;
252b5132 3389
c87b5a93
AM
3390 /* Don't do anything special with non-loaded, non-alloced sections.
3391 In particular, any relocs in such sections should not affect GOT
3392 and PLT reference counting (ie. we don't allow them to create GOT
3393 or PLT entries), there's no possibility or desire to optimize TLS
3394 relocs, and there's not much point in propagating relocs to shared
3395 libs that the dynamic linker won't relocate. */
3396 if ((sec->flags & SEC_ALLOC) == 0)
3397 return TRUE;
3398
252b5132 3399#ifdef DEBUG
25dbc73a
AM
3400 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3401 sec, abfd);
252b5132
RH
3402#endif
3403
0c8d6e5c 3404 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3405
25dbc73a
AM
3406 /* Initialize howto table if not already done. */
3407 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3408 ppc_elf_howto_init ();
3409
7619e7c7 3410 htab = ppc_elf_hash_table (info);
25f23106
AM
3411 if (htab->glink == NULL)
3412 {
3413 if (htab->elf.dynobj == NULL)
3414 htab->elf.dynobj = abfd;
3415 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3416 return FALSE;
3417 }
727fc41e
AM
3418 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3419 FALSE, FALSE, TRUE);
0ffa91dd 3420 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 3421 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3422 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
3423 sreloc = NULL;
3424
3425 rel_end = relocs + sec->reloc_count;
3426 for (rel = relocs; rel < rel_end; rel++)
3427 {
3428 unsigned long r_symndx;
3429 enum elf_ppc_reloc_type r_type;
3430 struct elf_link_hash_entry *h;
727fc41e 3431 int tls_type;
e054468f 3432 struct plt_entry **ifunc;
25dbc73a
AM
3433
3434 r_symndx = ELF32_R_SYM (rel->r_info);
3435 if (r_symndx < symtab_hdr->sh_info)
3436 h = NULL;
3437 else
973a3492
L
3438 {
3439 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3440 while (h->root.type == bfd_link_hash_indirect
3441 || h->root.type == bfd_link_hash_warning)
3442 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3443 }
25dbc73a
AM
3444
3445 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3446 This shows up in particular in an R_PPC_ADDR32 in the eabi
3447 startup code. */
3b36f7e6
AM
3448 if (h != NULL
3449 && htab->got == NULL
3450 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3451 {
3b36f7e6
AM
3452 if (htab->elf.dynobj == NULL)
3453 htab->elf.dynobj = abfd;
3454 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3455 return FALSE;
3456 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3457 }
252b5132 3458
727fc41e 3459 tls_type = 0;
e054468f 3460 ifunc = NULL;
de972ffa 3461 r_type = ELF32_R_TYPE (rel->r_info);
25f23106 3462 if (!htab->is_vxworks)
e054468f 3463 {
e054468f
AM
3464 if (h != NULL)
3465 {
3466 if (h->type == STT_GNU_IFUNC)
de972ffa 3467 ifunc = &h->plt.plist;
e054468f
AM
3468 }
3469 else
3470 {
3471 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3472 abfd, r_symndx);
3473 if (isym == NULL)
3474 return FALSE;
3475
de972ffa
AM
3476 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3477 && (!info->shared
3478 || is_branch_reloc (r_type)))
e054468f 3479 {
de972ffa
AM
3480 bfd_vma addend;
3481
e054468f
AM
3482 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3483 PLT_IFUNC);
3484 if (ifunc == NULL)
3485 return FALSE;
de972ffa
AM
3486
3487 /* STT_GNU_IFUNC symbols must have a PLT entry;
3488 In a non-pie executable even when there are
3489 no plt calls. */
3490 addend = 0;
3491 if (r_type == R_PPC_PLTREL24)
3492 {
3493 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3494 addend = rel->r_addend;
3495 }
3496 if (!update_plt_info (abfd, ifunc,
3497 addend < 32768 ? NULL : got2, addend))
3498 return FALSE;
e054468f
AM
3499 }
3500 }
25f23106
AM
3501 }
3502
de972ffa
AM
3503 if (!htab->is_vxworks
3504 && is_branch_reloc (r_type)
3505 && h != NULL
3506 && h == tga)
25f23106 3507 {
de972ffa
AM
3508 if (rel != relocs
3509 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3510 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3511 /* We have a new-style __tls_get_addr call with a marker
3512 reloc. */
3513 ;
3514 else
3515 /* Mark this section as having an old-style call. */
3516 sec->has_tls_get_addr_call = 1;
e054468f 3517 }
727fc41e 3518
25dbc73a
AM
3519 switch (r_type)
3520 {
727fc41e
AM
3521 case R_PPC_TLSGD:
3522 case R_PPC_TLSLD:
3523 /* These special tls relocs tie a call to __tls_get_addr with
3524 its parameter symbol. */
3525 break;
3526
25dbc73a
AM
3527 case R_PPC_GOT_TLSLD16:
3528 case R_PPC_GOT_TLSLD16_LO:
3529 case R_PPC_GOT_TLSLD16_HI:
3530 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
3531 tls_type = TLS_TLS | TLS_LD;
3532 goto dogottls;
252b5132 3533
25dbc73a
AM
3534 case R_PPC_GOT_TLSGD16:
3535 case R_PPC_GOT_TLSGD16_LO:
3536 case R_PPC_GOT_TLSGD16_HI:
3537 case R_PPC_GOT_TLSGD16_HA:
3538 tls_type = TLS_TLS | TLS_GD;
3539 goto dogottls;
3540
3541 case R_PPC_GOT_TPREL16:
3542 case R_PPC_GOT_TPREL16_LO:
3543 case R_PPC_GOT_TPREL16_HI:
3544 case R_PPC_GOT_TPREL16_HA:
1d483afe 3545 if (!info->executable)
25dbc73a
AM
3546 info->flags |= DF_STATIC_TLS;
3547 tls_type = TLS_TLS | TLS_TPREL;
3548 goto dogottls;
3549
3550 case R_PPC_GOT_DTPREL16:
3551 case R_PPC_GOT_DTPREL16_LO:
3552 case R_PPC_GOT_DTPREL16_HI:
3553 case R_PPC_GOT_DTPREL16_HA:
3554 tls_type = TLS_TLS | TLS_DTPREL;
3555 dogottls:
3556 sec->has_tls_reloc = 1;
3557 /* Fall thru */
252b5132 3558
25dbc73a
AM
3559 /* GOT16 relocations */
3560 case R_PPC_GOT16:
3561 case R_PPC_GOT16_LO:
3562 case R_PPC_GOT16_HI:
3563 case R_PPC_GOT16_HA:
3564 /* This symbol requires a global offset table entry. */
3565 if (htab->got == NULL)
3566 {
3567 if (htab->elf.dynobj == NULL)
3568 htab->elf.dynobj = abfd;
3569 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3570 return FALSE;
3571 }
3572 if (h != NULL)
3573 {
3574 h->got.refcount += 1;
3575 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3576 }
3577 else
3578 /* This is a global offset table entry for a local symbol. */
3579 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3580 return FALSE;
3581 break;
252b5132 3582
25dbc73a
AM
3583 /* Indirect .sdata relocation. */
3584 case R_PPC_EMB_SDAI16:
3585 if (info->shared)
3586 {
3587 bad_shared_reloc (abfd, r_type);
3588 return FALSE;
3589 }
c9a2f333
AM
3590 if (htab->sdata[0].section == NULL
3591 && !ppc_elf_create_linker_section (abfd, info, 0,
3592 &htab->sdata[0]))
3593 return FALSE;
76750a2f
AM
3594 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3595 h, rel))
25dbc73a 3596 return FALSE;
046183de
AM
3597 if (h != NULL)
3598 {
3599 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3600 h->non_got_ref = TRUE;
3601 }
25dbc73a 3602 break;
252b5132 3603
25dbc73a
AM
3604 /* Indirect .sdata2 relocation. */
3605 case R_PPC_EMB_SDA2I16:
3606 if (info->shared)
3607 {
3608 bad_shared_reloc (abfd, r_type);
3609 return FALSE;
3610 }
c9a2f333
AM
3611 if (htab->sdata[1].section == NULL
3612 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3613 &htab->sdata[1]))
3614 return FALSE;
76750a2f
AM
3615 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3616 h, rel))
25dbc73a 3617 return FALSE;
046183de
AM
3618 if (h != NULL)
3619 {
3620 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3621 h->non_got_ref = TRUE;
3622 }
25dbc73a 3623 break;
252b5132 3624
25dbc73a 3625 case R_PPC_SDAREL16:
046183de
AM
3626 if (info->shared)
3627 {
3628 bad_shared_reloc (abfd, r_type);
3629 return FALSE;
3630 }
3631 if (htab->sdata[0].sym == NULL
3632 && !create_sdata_sym (htab, &htab->sdata[0]))
3633 return FALSE;
3634 if (h != NULL)
3635 {
3636 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3637 h->non_got_ref = TRUE;
3638 }
3639 break;
3640
25dbc73a 3641 case R_PPC_EMB_SDA2REL:
046183de
AM
3642 if (info->shared)
3643 {
3644 bad_shared_reloc (abfd, r_type);
3645 return FALSE;
3646 }
3647 if (htab->sdata[1].sym == NULL
3648 && !create_sdata_sym (htab, &htab->sdata[1]))
3649 return FALSE;
3650 if (h != NULL)
3651 {
3652 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3653 h->non_got_ref = TRUE;
3654 }
3655 break;
3656
25dbc73a
AM
3657 case R_PPC_EMB_SDA21:
3658 case R_PPC_EMB_RELSDA:
046183de
AM
3659 if (info->shared)
3660 {
3661 bad_shared_reloc (abfd, r_type);
3662 return FALSE;
3663 }
3664 if (htab->sdata[0].sym == NULL
3665 && !create_sdata_sym (htab, &htab->sdata[0]))
3666 return FALSE;
3667 if (htab->sdata[1].sym == NULL
3668 && !create_sdata_sym (htab, &htab->sdata[1]))
3669 return FALSE;
3670 if (h != NULL)
3671 {
3672 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3673 h->non_got_ref = TRUE;
3674 }
3675 break;
3676
25dbc73a
AM
3677 case R_PPC_EMB_NADDR32:
3678 case R_PPC_EMB_NADDR16:
3679 case R_PPC_EMB_NADDR16_LO:
3680 case R_PPC_EMB_NADDR16_HI:
3681 case R_PPC_EMB_NADDR16_HA:
3682 if (info->shared)
3683 {
3684 bad_shared_reloc (abfd, r_type);
3685 return FALSE;
3686 }
4dc4a9a5 3687 if (h != NULL)
046183de 3688 h->non_got_ref = TRUE;
25dbc73a 3689 break;
252b5132 3690
25dbc73a 3691 case R_PPC_PLTREL24:
de972ffa 3692 if (h == NULL)
6d78d0b9
AM
3693 break;
3694 /* Fall through */
3695 case R_PPC_PLT32:
25dbc73a
AM
3696 case R_PPC_PLTREL32:
3697 case R_PPC_PLT16_LO:
3698 case R_PPC_PLT16_HI:
3699 case R_PPC_PLT16_HA:
3700#ifdef DEBUG
3701 fprintf (stderr, "Reloc requires a PLT entry\n");
3702#endif
3703 /* This symbol requires a procedure linkage table entry. We
3704 actually build the entry in finish_dynamic_symbol,
3705 because this might be a case of linking PIC code without
3706 linking in any dynamic objects, in which case we don't
3707 need to generate a procedure linkage table after all. */
7619e7c7 3708
25dbc73a
AM
3709 if (h == NULL)
3710 {
3711 /* It does not make sense to have a procedure linkage
3712 table entry for a local symbol. */
3713 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3714 "local symbol"),
3715 abfd,
3716 sec,
3717 (long) rel->r_offset,
3718 ppc_elf_howto_table[r_type]->name);
3719 bfd_set_error (bfd_error_bad_value);
3720 return FALSE;
3721 }
a6aa5195
AM
3722 else
3723 {
016687f8 3724 bfd_vma addend = 0;
ee05f2fe 3725
016687f8
AM
3726 if (r_type == R_PPC_PLTREL24)
3727 {
3728 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3729 addend = rel->r_addend;
3730 }
a6aa5195 3731 h->needs_plt = 1;
3ec01793
AM
3732 if (!update_plt_info (abfd, &h->plt.plist,
3733 addend < 32768 ? NULL : got2, addend))
a6aa5195
AM
3734 return FALSE;
3735 }
25dbc73a 3736 break;
ee05f2fe 3737
25dbc73a
AM
3738 /* The following relocations don't need to propagate the
3739 relocation if linking a shared object since they are
3740 section relative. */
3741 case R_PPC_SECTOFF:
3742 case R_PPC_SECTOFF_LO:
3743 case R_PPC_SECTOFF_HI:
3744 case R_PPC_SECTOFF_HA:
3745 case R_PPC_DTPREL16:
3746 case R_PPC_DTPREL16_LO:
3747 case R_PPC_DTPREL16_HI:
3748 case R_PPC_DTPREL16_HA:
3749 case R_PPC_TOC16:
3750 break;
252b5132 3751
d7128ce4
AM
3752 case R_PPC_REL16:
3753 case R_PPC_REL16_LO:
3754 case R_PPC_REL16_HI:
3755 case R_PPC_REL16_HA:
016687f8 3756 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
3757 break;
3758
a6aa5195 3759 /* These are just markers. */
25dbc73a
AM
3760 case R_PPC_TLS:
3761 case R_PPC_EMB_MRKREF:
3762 case R_PPC_NONE:
3763 case R_PPC_max:
ceaf50a2
AM
3764 case R_PPC_RELAX32:
3765 case R_PPC_RELAX32PC:
3766 case R_PPC_RELAX32_PLT:
3767 case R_PPC_RELAX32PC_PLT:
25dbc73a 3768 break;
252b5132 3769
25dbc73a
AM
3770 /* These should only appear in dynamic objects. */
3771 case R_PPC_COPY:
3772 case R_PPC_GLOB_DAT:
3773 case R_PPC_JMP_SLOT:
3774 case R_PPC_RELATIVE:
e054468f 3775 case R_PPC_IRELATIVE:
25dbc73a 3776 break;
252b5132 3777
25dbc73a
AM
3778 /* These aren't handled yet. We'll report an error later. */
3779 case R_PPC_ADDR30:
3780 case R_PPC_EMB_RELSEC16:
3781 case R_PPC_EMB_RELST_LO:
3782 case R_PPC_EMB_RELST_HI:
3783 case R_PPC_EMB_RELST_HA:
3784 case R_PPC_EMB_BIT_FLD:
3785 break;
252b5132 3786
25dbc73a
AM
3787 /* This refers only to functions defined in the shared library. */
3788 case R_PPC_LOCAL24PC:
727fc41e 3789 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
3790 {
3791 htab->plt_type = PLT_OLD;
3792 htab->old_bfd = abfd;
3793 }
25dbc73a 3794 break;
252b5132 3795
25dbc73a
AM
3796 /* This relocation describes the C++ object vtable hierarchy.
3797 Reconstruct it for later use during GC. */
3798 case R_PPC_GNU_VTINHERIT:
3799 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3800 return FALSE;
3801 break;
252b5132 3802
25dbc73a
AM
3803 /* This relocation describes which C++ vtable entries are actually
3804 used. Record for later use during GC. */
3805 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
3806 BFD_ASSERT (h != NULL);
3807 if (h != NULL
3808 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
3809 return FALSE;
3810 break;
252b5132 3811
25dbc73a
AM
3812 /* We shouldn't really be seeing these. */
3813 case R_PPC_TPREL32:
1d483afe
AM
3814 case R_PPC_TPREL16:
3815 case R_PPC_TPREL16_LO:
3816 case R_PPC_TPREL16_HI:
3817 case R_PPC_TPREL16_HA:
3818 if (!info->executable)
25dbc73a
AM
3819 info->flags |= DF_STATIC_TLS;
3820 goto dodyn;
252b5132 3821
25dbc73a
AM
3822 /* Nor these. */
3823 case R_PPC_DTPMOD32:
3824 case R_PPC_DTPREL32:
3825 goto dodyn;
252b5132 3826
9edfd1af
AM
3827 case R_PPC_REL32:
3828 if (h == NULL
3829 && got2 != NULL
3830 && (sec->flags & SEC_CODE) != 0
3831 && (info->shared || info->pie)
4a3dc543 3832 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
3833 {
3834 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3835 the start of a function, which assembles to a REL32
3836 reference to .got2. If we detect one of these, then
3837 force the old PLT layout because the linker cannot
3838 reliably deduce the GOT pointer value needed for
3839 PLT call stubs. */
3840 asection *s;
87d72d41 3841 Elf_Internal_Sym *isym;
9edfd1af 3842
87d72d41
AM
3843 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3844 abfd, r_symndx);
3845 if (isym == NULL)
3846 return FALSE;
3847
3848 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
9edfd1af 3849 if (s == got2)
016687f8
AM
3850 {
3851 htab->plt_type = PLT_OLD;
3852 htab->old_bfd = abfd;
3853 }
9edfd1af 3854 }
7123df0e 3855 if (h == NULL || h == htab->elf.hgot)
fd38b44c 3856 break;
625af618
AM
3857 /* fall through */
3858
3859 case R_PPC_ADDR32:
3860 case R_PPC_ADDR16:
3861 case R_PPC_ADDR16_LO:
3862 case R_PPC_ADDR16_HI:
3863 case R_PPC_ADDR16_HA:
3864 case R_PPC_UADDR32:
3865 case R_PPC_UADDR16:
3866 if (h != NULL && !info->shared)
3867 {
3868 /* We may need a plt entry if the symbol turns out to be
3869 a function defined in a dynamic object. */
3ec01793 3870 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
625af618
AM
3871 return FALSE;
3872
3873 /* We may need a copy reloc too. */
3874 h->non_got_ref = 1;
3875 h->pointer_equality_needed = 1;
3876 }
3877 goto dodyn;
9edfd1af 3878
25dbc73a
AM
3879 case R_PPC_REL24:
3880 case R_PPC_REL14:
3881 case R_PPC_REL14_BRTAKEN:
3882 case R_PPC_REL14_BRNTAKEN:
d7128ce4 3883 if (h == NULL)
25dbc73a 3884 break;
7123df0e 3885 if (h == htab->elf.hgot)
d7128ce4 3886 {
7123df0e 3887 if (htab->plt_type == PLT_UNSET)
016687f8
AM
3888 {
3889 htab->plt_type = PLT_OLD;
3890 htab->old_bfd = abfd;
3891 }
d7128ce4
AM
3892 break;
3893 }
25dbc73a 3894 /* fall through */
ee05f2fe 3895
25dbc73a 3896 case R_PPC_ADDR24:
25dbc73a
AM
3897 case R_PPC_ADDR14:
3898 case R_PPC_ADDR14_BRTAKEN:
3899 case R_PPC_ADDR14_BRNTAKEN:
25dbc73a
AM
3900 if (h != NULL && !info->shared)
3901 {
3902 /* We may need a plt entry if the symbol turns out to be
3903 a function defined in a dynamic object. */
e054468f 3904 h->needs_plt = 1;
de972ffa 3905 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
a6aa5195 3906 return FALSE;
625af618 3907 break;
25dbc73a 3908 }
7619e7c7 3909
25dbc73a
AM
3910 dodyn:
3911 /* If we are creating a shared library, and this is a reloc
3912 against a global symbol, or a non PC relative reloc
3913 against a local symbol, then we need to copy the reloc
3914 into the shared library. However, if we are linking with
3915 -Bsymbolic, we do not need to copy a reloc against a
3916 global symbol which is defined in an object we are
3917 including in the link (i.e., DEF_REGULAR is set). At
3918 this point we have not seen all the input files, so it is
3919 possible that DEF_REGULAR is not set now but will be set
3920 later (it is never cleared). In case of a weak definition,
3921 DEF_REGULAR may be cleared later by a strong definition in
3922 a shared library. We account for that possibility below by
3923 storing information in the dyn_relocs field of the hash
3924 table entry. A similar situation occurs when creating
3925 shared libraries and symbol visibility changes render the
3926 symbol local.
7619e7c7 3927
25dbc73a
AM
3928 If on the other hand, we are creating an executable, we
3929 may need to keep relocations for symbols satisfied by a
3930 dynamic library if we manage to avoid copy relocs for the
3931 symbol. */
3932 if ((info->shared
1d483afe 3933 && (must_be_dyn_reloc (info, r_type)
25dbc73a
AM
3934 || (h != NULL
3935 && (! info->symbolic
3936 || h->root.type == bfd_link_hash_defweak
3937 || !h->def_regular))))
3938 || (ELIMINATE_COPY_RELOCS
3939 && !info->shared
25dbc73a
AM
3940 && h != NULL
3941 && (h->root.type == bfd_link_hash_defweak
de972ffa 3942 || !h->def_regular)))
25dbc73a
AM
3943 {
3944 struct ppc_elf_dyn_relocs *p;
3945 struct ppc_elf_dyn_relocs **head;
7619e7c7 3946
25dbc73a
AM
3947#ifdef DEBUG
3948 fprintf (stderr,
3949 "ppc_elf_check_relocs needs to "
3950 "create relocation for %s\n",
3951 (h && h->root.root.string
3952 ? h->root.root.string : "<unknown>"));
3953#endif
3954 if (sreloc == NULL)
3955 {
c9a2f333
AM
3956 if (htab->elf.dynobj == NULL)
3957 htab->elf.dynobj = abfd;
83bac4b0
NC
3958
3959 sreloc = _bfd_elf_make_dynamic_reloc_section
3960 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3961
25dbc73a 3962 if (sreloc == NULL)
83bac4b0 3963 return FALSE;
25dbc73a 3964 }
7619e7c7 3965
25dbc73a
AM
3966 /* If this is a global symbol, we count the number of
3967 relocations we need for this symbol. */
3968 if (h != NULL)
3969 {
3970 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3971 }
3972 else
3973 {
3974 /* Track dynamic relocs needed for local syms too.
3975 We really need local syms available to do this
3976 easily. Oh well. */
25dbc73a 3977 asection *s;
6edfbbad 3978 void *vpp;
87d72d41 3979 Elf_Internal_Sym *isym;
6edfbbad 3980
87d72d41
AM
3981 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3982 abfd, r_symndx);
3983 if (isym == NULL)
25dbc73a 3984 return FALSE;
7fce784e 3985
87d72d41
AM
3986 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3987 if (s == NULL)
3988 s = sec;
3989
6edfbbad
DJ
3990 vpp = &elf_section_data (s)->local_dynrel;
3991 head = (struct ppc_elf_dyn_relocs **) vpp;
25dbc73a 3992 }
7fce784e 3993
25dbc73a
AM
3994 p = *head;
3995 if (p == NULL || p->sec != sec)
3996 {
3997 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3998 if (p == NULL)
3999 return FALSE;
4000 p->next = *head;
4001 *head = p;
4002 p->sec = sec;
4003 p->count = 0;
4004 p->pc_count = 0;
4005 }
4006
4007 p->count += 1;
1d483afe 4008 if (!must_be_dyn_reloc (info, r_type))
25dbc73a 4009 p->pc_count += 1;
7619e7c7 4010 }
25dbc73a
AM
4011
4012 break;
7619e7c7
AM
4013 }
4014 }
ee05f2fe 4015
25dbc73a
AM
4016 return TRUE;
4017}
4018\f
34c8bcba
JM
4019
4020/* Merge object attributes from IBFD into OBFD. Raise an error if
4021 there are conflicting attributes. */
4022static bfd_boolean
4023ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4024{
c6e65352
DJ
4025 obj_attribute *in_attr, *in_attrs;
4026 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM
4027
4028 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4029 {
4030 /* This is the first object. Copy the attributes. */
4031 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4032
4033 /* Use the Tag_null value to indicate the attributes have been
4034 initialized. */
4035 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4036
4037 return TRUE;
4038 }
4039
c6e65352
DJ
4040 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4041 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4042
34c8bcba
JM
4043 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4044 non-conflicting ones. */
c6e65352
DJ
4045 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4046 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4047 if (in_attr->i != out_attr->i)
34c8bcba 4048 {
c6e65352
DJ
4049 out_attr->type = 1;
4050 if (out_attr->i == 0)
4051 out_attr->i = in_attr->i;
4052 else if (in_attr->i == 0)
34c8bcba 4053 ;
c6e65352 4054 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM
4055 _bfd_error_handler
4056 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3c7b9897
AM
4057 else if (out_attr->i == 1 && in_attr->i == 3)
4058 _bfd_error_handler
4059 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4060 obfd, ibfd);
4061 else if (out_attr->i == 3 && in_attr->i == 1)
4062 _bfd_error_handler
4063 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4064 ibfd, obfd);
4065 else if (out_attr->i == 3 && in_attr->i == 2)
4066 _bfd_error_handler
4067 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4068 ibfd, obfd);
4069 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
34c8bcba
JM
4070 _bfd_error_handler
4071 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3c7b9897 4072 else if (in_attr->i > 3)
34c8bcba
JM
4073 _bfd_error_handler
4074 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 4075 in_attr->i);
34c8bcba
JM
4076 else
4077 _bfd_error_handler
4078 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ
4079 out_attr->i);
4080 }
4081
4082 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4083 merge non-conflicting ones. */
4084 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4085 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4086 if (in_attr->i != out_attr->i)
4087 {
4088 const char *in_abi = NULL, *out_abi = NULL;
4089
4090 switch (in_attr->i)
4091 {
4092 case 1: in_abi = "generic"; break;
4093 case 2: in_abi = "AltiVec"; break;
4094 case 3: in_abi = "SPE"; break;
4095 }
4096
4097 switch (out_attr->i)
4098 {
4099 case 1: out_abi = "generic"; break;
4100 case 2: out_abi = "AltiVec"; break;
4101 case 3: out_abi = "SPE"; break;
4102 }
4103
4104 out_attr->type = 1;
4105 if (out_attr->i == 0)
4106 out_attr->i = in_attr->i;
4107 else if (in_attr->i == 0)
4108 ;
4109 /* For now, allow generic to transition to AltiVec or SPE
4110 without a warning. If GCC marked files with their stack
4111 alignment and used don't-care markings for files which are
4112 not affected by the vector ABI, we could warn about this
4113 case too. */
4114 else if (out_attr->i == 1)
4115 out_attr->i = in_attr->i;
4116 else if (in_attr->i == 1)
4117 ;
4118 else if (in_abi == NULL)
4119 _bfd_error_handler
4120 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4121 in_attr->i);
4122 else if (out_abi == NULL)
4123 _bfd_error_handler
4124 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4125 in_attr->i);
4126 else
4127 _bfd_error_handler
4128 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4129 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM
4130 }
4131
f82e0623
NF
4132 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4133 and merge non-conflicting ones. */
4134 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4135 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4136 if (in_attr->i != out_attr->i)
4137 {
4138 out_attr->type = 1;
4139 if (out_attr->i == 0)
4140 out_attr->i = in_attr->i;
4141 else if (in_attr->i == 0)
4142 ;
4143 else if (out_attr->i == 1 && in_attr->i == 2)
4144 _bfd_error_handler
4145 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4146 else if (out_attr->i == 2 && in_attr->i == 1)
4147 _bfd_error_handler
4148 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4149 else if (in_attr->i > 2)
4150 _bfd_error_handler
4151 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4152 in_attr->i);
4153 else
4154 _bfd_error_handler
4155 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4156 out_attr->i);
4157 }
4158
34c8bcba
JM
4159 /* Merge Tag_compatibility attributes and any common GNU ones. */
4160 _bfd_elf_merge_object_attributes (ibfd, obfd);
4161
4162 return TRUE;
4163}
4164
8853c3d3
AM
4165/* Merge backend specific data from an object file to the output
4166 object file when linking. */
4167
4168static bfd_boolean
4169ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4170{
4171 flagword old_flags;
4172 flagword new_flags;
4173 bfd_boolean error;
4174
0c8d6e5c 4175 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4176 return TRUE;
4177
4178 /* Check if we have the same endianess. */
4179 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4180 return FALSE;
4181
34c8bcba
JM
4182 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4183 return FALSE;
4184
8853c3d3
AM
4185 new_flags = elf_elfheader (ibfd)->e_flags;
4186 old_flags = elf_elfheader (obfd)->e_flags;
4187 if (!elf_flags_init (obfd))
4188 {
4189 /* First call, no flags set. */
4190 elf_flags_init (obfd) = TRUE;
4191 elf_elfheader (obfd)->e_flags = new_flags;
4192 }
4193
4194 /* Compatible flags are ok. */
4195 else if (new_flags == old_flags)
4196 ;
4197
4198 /* Incompatible flags. */
4199 else
4200 {
4201 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4202 to be linked with either. */
4203 error = FALSE;
4204 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4205 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4206 {
4207 error = TRUE;
4208 (*_bfd_error_handler)
4209 (_("%B: compiled with -mrelocatable and linked with "
4210 "modules compiled normally"), ibfd);
4211 }
4212 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4213 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4214 {
4215 error = TRUE;
4216 (*_bfd_error_handler)
4217 (_("%B: compiled normally and linked with "
4218 "modules compiled with -mrelocatable"), ibfd);
4219 }
4220
4221 /* The output is -mrelocatable-lib iff both the input files are. */
4222 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4223 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4224
4225 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4226 but each input file is either -mrelocatable or -mrelocatable-lib. */
4227 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4228 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4229 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4230 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4231
4232 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4233 any module uses it. */
4234 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4235
4236 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4237 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4238
4239 /* Warn about any other mismatches. */
4240 if (new_flags != old_flags)
4241 {
4242 error = TRUE;
4243 (*_bfd_error_handler)
4244 (_("%B: uses different e_flags (0x%lx) fields "
4245 "than previous modules (0x%lx)"),
4246 ibfd, (long) new_flags, (long) old_flags);
4247 }
4248
4249 if (error)
4250 {
4251 bfd_set_error (bfd_error_bad_value);
4252 return FALSE;
4253 }
4254 }
4255
4256 return TRUE;
4257}
4258\f
d7128ce4
AM
4259/* Choose which PLT scheme to use, and set .plt flags appropriately.
4260 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4261int
4262ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4263 struct bfd_link_info *info,
016687f8 4264 enum ppc_elf_plt_type plt_style,
0ba07910 4265 int emit_stub_syms)
d7128ce4
AM
4266{
4267 struct ppc_elf_link_hash_table *htab;
9d8504b1 4268 flagword flags;
d7128ce4
AM
4269
4270 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4271
4272 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4273 {
4274 if (plt_style == PLT_OLD)
4275 htab->plt_type = PLT_OLD;
4276 else
4277 {
4278 bfd *ibfd;
4279 enum ppc_elf_plt_type plt_type = plt_style;
4280
4281 /* Look through the reloc flags left by ppc_elf_check_relocs.
4282 Use the old style bss plt if a file makes plt calls
4283 without using the new relocs, and if ld isn't given
4284 --secure-plt and we never see REL16 relocs. */
4285 if (plt_type == PLT_UNSET)
4286 plt_type = PLT_OLD;
60b31e8d 4287 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
0c8d6e5c 4288 if (is_ppc_elf (ibfd))
016687f8
AM
4289 {
4290 if (ppc_elf_tdata (ibfd)->has_rel16)
4291 plt_type = PLT_NEW;
4292 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4293 {
4294 plt_type = PLT_OLD;
4295 htab->old_bfd = ibfd;
4296 break;
4297 }
4298 }
4299 htab->plt_type = plt_type;
4300 }
4301 }
4302 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4303 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
d7128ce4 4304
0ba07910
AM
4305 htab->emit_stub_syms = emit_stub_syms;
4306
4a3dc543 4307 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4308
4a3dc543 4309 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
4310 {
4311 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4312 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
4313
4314 /* The new PLT is a loaded section. */
4315 if (htab->plt != NULL
4316 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4317 return -1;
4318
4319 /* The new GOT is not executable. */
4320 if (htab->got != NULL
4321 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4322 return -1;
d7128ce4
AM
4323 }
4324 else
4325 {
4326 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
4327 if (htab->glink != NULL
4328 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4329 return -1;
d7128ce4 4330 }
4a3dc543 4331 return htab->plt_type == PLT_NEW;
d7128ce4
AM
4332}
4333\f
25dbc73a
AM
4334/* Return the section that should be marked against GC for a given
4335 relocation. */
586119b3 4336
25dbc73a
AM
4337static asection *
4338ppc_elf_gc_mark_hook (asection *sec,
07adf181 4339 struct bfd_link_info *info,
25dbc73a
AM
4340 Elf_Internal_Rela *rel,
4341 struct elf_link_hash_entry *h,
4342 Elf_Internal_Sym *sym)
4343{
4344 if (h != NULL)
07adf181
AM
4345 switch (ELF32_R_TYPE (rel->r_info))
4346 {
4347 case R_PPC_GNU_VTINHERIT:
4348 case R_PPC_GNU_VTENTRY:
4349 return NULL;
4350 }
4351
4352 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 4353}
a876ecf9 4354
25dbc73a
AM
4355/* Update the got, plt and dynamic reloc reference counts for the
4356 section being removed. */
4357
4358static bfd_boolean
4359ppc_elf_gc_sweep_hook (bfd *abfd,
4360 struct bfd_link_info *info,
4361 asection *sec,
4362 const Elf_Internal_Rela *relocs)
4363{
4364 struct ppc_elf_link_hash_table *htab;
4365 Elf_Internal_Shdr *symtab_hdr;
4366 struct elf_link_hash_entry **sym_hashes;
4367 bfd_signed_vma *local_got_refcounts;
4368 const Elf_Internal_Rela *rel, *relend;
a6aa5195 4369 asection *got2;
25dbc73a 4370
7dda2462
TG
4371 if (info->relocatable)
4372 return TRUE;
4373
c87b5a93
AM
4374 if ((sec->flags & SEC_ALLOC) == 0)
4375 return TRUE;
4376
25dbc73a
AM
4377 elf_section_data (sec)->local_dynrel = NULL;
4378
4379 htab = ppc_elf_hash_table (info);
0ffa91dd 4380 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
4381 sym_hashes = elf_sym_hashes (abfd);
4382 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 4383 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4384
4385 relend = relocs + sec->reloc_count;
4386 for (rel = relocs; rel < relend; rel++)
4387 {
4388 unsigned long r_symndx;
4389 enum elf_ppc_reloc_type r_type;
4390 struct elf_link_hash_entry *h = NULL;
4391
4392 r_symndx = ELF32_R_SYM (rel->r_info);
4393 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 4394 {
25dbc73a
AM
4395 struct ppc_elf_dyn_relocs **pp, *p;
4396 struct ppc_elf_link_hash_entry *eh;
4397
4398 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4399 while (h->root.type == bfd_link_hash_indirect
4400 || h->root.type == bfd_link_hash_warning)
4401 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4402 eh = (struct ppc_elf_link_hash_entry *) h;
4403
4404 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4405 if (p->sec == sec)
4406 {
4407 /* Everything must go for SEC. */
4408 *pp = p->next;
4409 break;
4410 }
a876ecf9 4411 }
ee05f2fe 4412
25dbc73a 4413 r_type = ELF32_R_TYPE (rel->r_info);
de972ffa
AM
4414 if (!htab->is_vxworks
4415 && h == NULL
4416 && local_got_refcounts != NULL
4417 && (!info->shared
4418 || is_branch_reloc (r_type)))
e054468f 4419 {
de972ffa
AM
4420 struct plt_entry **local_plt = (struct plt_entry **)
4421 (local_got_refcounts + symtab_hdr->sh_info);
4422 char *local_got_tls_masks = (char *)
4423 (local_plt + symtab_hdr->sh_info);
4424 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
e054468f 4425 {
de972ffa 4426 struct plt_entry **ifunc = local_plt + r_symndx;
e054468f
AM
4427 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
4428 struct plt_entry *ent = find_plt_ent (ifunc, got2, addend);
4429 if (ent->plt.refcount > 0)
4430 ent->plt.refcount -= 1;
4431 continue;
4432 }
4433 }
4434
25dbc73a 4435 switch (r_type)
ee05f2fe 4436 {
25dbc73a
AM
4437 case R_PPC_GOT_TLSLD16:
4438 case R_PPC_GOT_TLSLD16_LO:
4439 case R_PPC_GOT_TLSLD16_HI:
4440 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4441 case R_PPC_GOT_TLSGD16:
4442 case R_PPC_GOT_TLSGD16_LO:
4443 case R_PPC_GOT_TLSGD16_HI:
4444 case R_PPC_GOT_TLSGD16_HA:
4445 case R_PPC_GOT_TPREL16:
4446 case R_PPC_GOT_TPREL16_LO:
4447 case R_PPC_GOT_TPREL16_HI:
4448 case R_PPC_GOT_TPREL16_HA:
4449 case R_PPC_GOT_DTPREL16:
4450 case R_PPC_GOT_DTPREL16_LO:
4451 case R_PPC_GOT_DTPREL16_HI:
4452 case R_PPC_GOT_DTPREL16_HA:
4453 case R_PPC_GOT16:
4454 case R_PPC_GOT16_LO:
4455 case R_PPC_GOT16_HI:
4456 case R_PPC_GOT16_HA:
4457 if (h != NULL)
ee05f2fe 4458 {
25dbc73a
AM
4459 if (h->got.refcount > 0)
4460 h->got.refcount--;
ee05f2fe 4461 }
25dbc73a
AM
4462 else if (local_got_refcounts != NULL)
4463 {
4464 if (local_got_refcounts[r_symndx] > 0)
4465 local_got_refcounts[r_symndx]--;
4466 }
4467 break;
ee05f2fe 4468
25dbc73a
AM
4469 case R_PPC_REL24:
4470 case R_PPC_REL14:
4471 case R_PPC_REL14_BRTAKEN:
4472 case R_PPC_REL14_BRNTAKEN:
4473 case R_PPC_REL32:
3b36f7e6 4474 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM
4475 break;
4476 /* Fall thru */
ee05f2fe 4477
25dbc73a
AM
4478 case R_PPC_ADDR32:
4479 case R_PPC_ADDR24:
4480 case R_PPC_ADDR16:
4481 case R_PPC_ADDR16_LO:
4482 case R_PPC_ADDR16_HI:
4483 case R_PPC_ADDR16_HA:
4484 case R_PPC_ADDR14:
4485 case R_PPC_ADDR14_BRTAKEN:
4486 case R_PPC_ADDR14_BRNTAKEN:
4487 case R_PPC_UADDR32:
4488 case R_PPC_UADDR16:
87538722
AM
4489 if (info->shared)
4490 break;
4491
25dbc73a
AM
4492 case R_PPC_PLT32:
4493 case R_PPC_PLTREL24:
87538722 4494 case R_PPC_PLTREL32:
25dbc73a
AM
4495 case R_PPC_PLT16_LO:
4496 case R_PPC_PLT16_HI:
4497 case R_PPC_PLT16_HA:
4498 if (h != NULL)
4499 {
a6aa5195 4500 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3ec01793
AM
4501 struct plt_entry *ent = find_plt_ent (&h->plt.plist,
4502 got2, addend);
a6aa5195
AM
4503 if (ent->plt.refcount > 0)
4504 ent->plt.refcount -= 1;
25dbc73a
AM
4505 }
4506 break;
ee05f2fe 4507
25dbc73a
AM
4508 default:
4509 break;
4510 }
7fce784e 4511 }
7fce784e
AS
4512 return TRUE;
4513}
25dbc73a 4514\f
3a71aa26
AM
4515/* Set plt output section type, htab->tls_get_addr, and call the
4516 generic ELF tls_setup function. */
7fce784e 4517
25dbc73a
AM
4518asection *
4519ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 4520{
25dbc73a 4521 struct ppc_elf_link_hash_table *htab;
7fce784e 4522
25dbc73a 4523 htab = ppc_elf_hash_table (info);
4a3dc543 4524 if (htab->plt_type == PLT_NEW
d7128ce4
AM
4525 && htab->plt != NULL
4526 && htab->plt->output_section != NULL)
4527 {
4528 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4529 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4530 }
4531
25dbc73a
AM
4532 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4533 FALSE, FALSE, TRUE);
25dbc73a 4534 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
4535}
4536
3a71aa26
AM
4537/* Return TRUE iff REL is a branch reloc with a global symbol matching
4538 HASH. */
4539
4540static bfd_boolean
4541branch_reloc_hash_match (const bfd *ibfd,
4542 const Elf_Internal_Rela *rel,
4543 const struct elf_link_hash_entry *hash)
4544{
4545 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4546 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4547 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4548
e054468f 4549 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
3a71aa26
AM
4550 {
4551 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4552 struct elf_link_hash_entry *h;
4553
4554 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4555 while (h->root.type == bfd_link_hash_indirect
4556 || h->root.type == bfd_link_hash_warning)
4557 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4558 if (h == hash)
4559 return TRUE;
4560 }
4561 return FALSE;
4562}
4563
25dbc73a
AM
4564/* Run through all the TLS relocs looking for optimization
4565 opportunities. */
252b5132 4566
25dbc73a
AM
4567bfd_boolean
4568ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4569 struct bfd_link_info *info)
252b5132 4570{
7fce784e 4571 bfd *ibfd;
25dbc73a
AM
4572 asection *sec;
4573 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 4574 int pass;
252b5132 4575
1d483afe 4576 if (info->relocatable || !info->executable)
25dbc73a 4577 return TRUE;
252b5132 4578
7619e7c7 4579 htab = ppc_elf_hash_table (info);
b7fcf6f6
AM
4580 /* Make two passes through the relocs. First time check that tls
4581 relocs involved in setting up a tls_get_addr call are indeed
4582 followed by such a call. If they are not, exclude them from
4583 the optimizations done on the second pass. */
4584 for (pass = 0; pass < 2; ++pass)
4585 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4586 {
4587 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 4588 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7619e7c7 4589
b7fcf6f6
AM
4590 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4591 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4592 {
4593 Elf_Internal_Rela *relstart, *rel, *relend;
252b5132 4594
b7fcf6f6
AM
4595 /* Read the relocations. */
4596 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4597 info->keep_memory);
4598 if (relstart == NULL)
4599 return FALSE;
7619e7c7 4600
b7fcf6f6
AM
4601 relend = relstart + sec->reloc_count;
4602 for (rel = relstart; rel < relend; rel++)
4603 {
4604 enum elf_ppc_reloc_type r_type;
4605 unsigned long r_symndx;
4606 struct elf_link_hash_entry *h = NULL;
4607 char *tls_mask;
4608 char tls_set, tls_clear;
4609 bfd_boolean is_local;
4610 int expecting_tls_get_addr;
4611 bfd_signed_vma *got_count;
4612
4613 r_symndx = ELF32_R_SYM (rel->r_info);
4614 if (r_symndx >= symtab_hdr->sh_info)
4615 {
4616 struct elf_link_hash_entry **sym_hashes;
7fce784e 4617
b7fcf6f6
AM
4618 sym_hashes = elf_sym_hashes (ibfd);
4619 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4620 while (h->root.type == bfd_link_hash_indirect
4621 || h->root.type == bfd_link_hash_warning)
4622 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4623 }
7619e7c7 4624
b7fcf6f6
AM
4625 expecting_tls_get_addr = 0;
4626 is_local = FALSE;
4627 if (h == NULL
4628 || !h->def_dynamic)
4629 is_local = TRUE;
7619e7c7 4630
b7fcf6f6
AM
4631 r_type = ELF32_R_TYPE (rel->r_info);
4632 switch (r_type)
4633 {
4634 case R_PPC_GOT_TLSLD16:
4635 case R_PPC_GOT_TLSLD16_LO:
4636 expecting_tls_get_addr = 1;
4637 /* Fall thru */
4638
4639 case R_PPC_GOT_TLSLD16_HI:
4640 case R_PPC_GOT_TLSLD16_HA:
4641 /* These relocs should never be against a symbol
4642 defined in a shared lib. Leave them alone if
4643 that turns out to be the case. */
4644 if (!is_local)
4645 continue;
4646
4647 /* LD -> LE */
4648 tls_set = 0;
4649 tls_clear = TLS_LD;
4650 break;
4651
4652 case R_PPC_GOT_TLSGD16:
4653 case R_PPC_GOT_TLSGD16_LO:
4654 expecting_tls_get_addr = 1;
4655 /* Fall thru */
4656
4657 case R_PPC_GOT_TLSGD16_HI:
4658 case R_PPC_GOT_TLSGD16_HA:
4659 if (is_local)
4660 /* GD -> LE */
4661 tls_set = 0;
4662 else
4663 /* GD -> IE */
4664 tls_set = TLS_TLS | TLS_TPRELGD;
4665 tls_clear = TLS_GD;
4666 break;
4667
4668 case R_PPC_GOT_TPREL16:
4669 case R_PPC_GOT_TPREL16_LO:
4670 case R_PPC_GOT_TPREL16_HI:
4671 case R_PPC_GOT_TPREL16_HA:
4672 if (is_local)
4673 {
4674 /* IE -> LE */
4675 tls_set = 0;
4676 tls_clear = TLS_TPREL;
4677 break;
4678 }
4679 else
4680 continue;
4681
4682 default:
25dbc73a 4683 continue;
b7fcf6f6 4684 }
25dbc73a 4685
b7fcf6f6
AM
4686 if (pass == 0)
4687 {
727fc41e
AM
4688 if (!expecting_tls_get_addr
4689 || !sec->has_tls_get_addr_call)
b7fcf6f6 4690 continue;
25dbc73a 4691
3a71aa26
AM
4692 if (rel + 1 < relend
4693 && branch_reloc_hash_match (ibfd, rel + 1,
4694 htab->tls_get_addr))
4695 continue;
25dbc73a 4696
b7fcf6f6
AM
4697 /* Uh oh, we didn't find the expected call. We
4698 could just mark this symbol to exclude it
4699 from tls optimization but it's safer to skip
4700 the entire section. */
4701 sec->has_tls_reloc = 0;
4702 break;
4703 }
25dbc73a 4704
b7fcf6f6
AM
4705 if (h != NULL)
4706 {
4707 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4708 got_count = &h->got.refcount;
4709 }
4710 else
4711 {
4712 Elf_Internal_Sym *sym;
4713 bfd_signed_vma *lgot_refs;
e054468f 4714 struct plt_entry **local_plt;
b7fcf6f6 4715 char *lgot_masks;
25dbc73a 4716
b7fcf6f6
AM
4717 if (locsyms == NULL)
4718 {
4719 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4720 if (locsyms == NULL)
4721 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4722 symtab_hdr->sh_info,
4723 0, NULL, NULL, NULL);
4724 if (locsyms == NULL)
4725 {
4726 if (elf_section_data (sec)->relocs != relstart)
4727 free (relstart);
4728 return FALSE;
4729 }
4730 }
4731 sym = locsyms + r_symndx;
4732 lgot_refs = elf_local_got_refcounts (ibfd);
4733 if (lgot_refs == NULL)
4734 abort ();
e054468f
AM
4735 local_plt = (struct plt_entry **)
4736 (lgot_refs + symtab_hdr->sh_info);
4737 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
b7fcf6f6
AM
4738 tls_mask = &lgot_masks[r_symndx];
4739 got_count = &lgot_refs[r_symndx];
4740 }
25dbc73a 4741
b7fcf6f6
AM
4742 if (tls_set == 0)
4743 {
4744 /* We managed to get rid of a got entry. */
4745 if (*got_count > 0)
4746 *got_count -= 1;
4747 }
25dbc73a 4748
b7fcf6f6
AM
4749 if (expecting_tls_get_addr)
4750 {
4751 struct plt_entry *ent;
25dbc73a 4752
3ec01793
AM
4753 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4754 NULL, 0);
b7fcf6f6
AM
4755 if (ent != NULL && ent->plt.refcount > 0)
4756 ent->plt.refcount -= 1;
4757 }
25dbc73a 4758
b7fcf6f6
AM
4759 *tls_mask |= tls_set;
4760 *tls_mask &= ~tls_clear;
4761 }
25dbc73a 4762
b7fcf6f6
AM
4763 if (elf_section_data (sec)->relocs != relstart)
4764 free (relstart);
4765 }
4766
4767 if (locsyms != NULL
4768 && (symtab_hdr->contents != (unsigned char *) locsyms))
4769 {
4770 if (!info->keep_memory)
4771 free (locsyms);
4772 else
4773 symtab_hdr->contents = (unsigned char *) locsyms;
4774 }
4775 }
25dbc73a
AM
4776 return TRUE;
4777}
4778\f
625af618
AM
4779/* Return true if we have dynamic relocs that apply to read-only sections. */
4780
4781static bfd_boolean
4782readonly_dynrelocs (struct elf_link_hash_entry *h)
4783{
4784 struct ppc_elf_dyn_relocs *p;
4785
4786 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4787 {
4788 asection *s = p->sec->output_section;
4789
4790 if (s != NULL
4791 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4792 == (SEC_READONLY | SEC_ALLOC)))
4793 return TRUE;
4794 }
4795 return FALSE;
4796}
4797
25dbc73a
AM
4798/* Adjust a symbol defined by a dynamic object and referenced by a
4799 regular object. The current definition is in some section of the
4800 dynamic object, but we're not including those sections. We have to
4801 change the definition to something the rest of the link can
4802 understand. */
7fce784e 4803
25dbc73a
AM
4804static bfd_boolean
4805ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4806 struct elf_link_hash_entry *h)
4807{
4808 struct ppc_elf_link_hash_table *htab;
4809 asection *s;
7fce784e 4810
25dbc73a
AM
4811#ifdef DEBUG
4812 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4813 h->root.root.string);
4814#endif
252b5132 4815
25dbc73a
AM
4816 /* Make sure we know what is going on here. */
4817 htab = ppc_elf_hash_table (info);
4818 BFD_ASSERT (htab->elf.dynobj != NULL
4819 && (h->needs_plt
4820 || h->u.weakdef != NULL
4821 || (h->def_dynamic
4822 && h->ref_regular
4823 && !h->def_regular)));
252b5132 4824
25dbc73a
AM
4825 /* Deal with function syms. */
4826 if (h->type == STT_FUNC
e054468f 4827 || h->type == STT_GNU_IFUNC
25dbc73a
AM
4828 || h->needs_plt)
4829 {
4830 /* Clear procedure linkage table information for any symbol that
4831 won't need a .plt entry. */
a6aa5195
AM
4832 struct plt_entry *ent;
4833 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4834 if (ent->plt.refcount > 0)
4835 break;
4836 if (ent == NULL
e054468f
AM
4837 || (h->type != STT_GNU_IFUNC
4838 && (SYMBOL_CALLS_LOCAL (info, h)
4839 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4840 && h->root.type == bfd_link_hash_undefweak))))
252b5132 4841 {
25dbc73a 4842 /* A PLT entry is not required/allowed when:
252b5132 4843
25dbc73a
AM
4844 1. We are not using ld.so; because then the PLT entry
4845 can't be set up, so we can't use one. In this case,
4846 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 4847
25dbc73a
AM
4848 2. GC has rendered the entry unused.
4849
4850 3. We know for certain that a call to this symbol
4851 will go to this object, or will remain undefined. */
a6aa5195 4852 h->plt.plist = NULL;
25dbc73a
AM
4853 h->needs_plt = 0;
4854 }
625af618
AM
4855 else
4856 {
25f23106
AM
4857 /* After adjust_dynamic_symbol, non_got_ref set in the
4858 non-shared case means that we have allocated space in
4859 .dynbss for the symbol and thus dyn_relocs for this
4860 symbol should be discarded.
625af618
AM
4861 If we get here we know we are making a PLT entry for this
4862 symbol, and in an executable we'd normally resolve
4863 relocations against this symbol to the PLT entry. Allow
4864 dynamic relocs if the reference is weak, and the dynamic
4865 relocs will not cause text relocation. */
4866 if (!h->ref_regular_nonweak
4867 && h->non_got_ref
25f23106 4868 && h->type != STT_GNU_IFUNC
625af618
AM
4869 && !htab->is_vxworks
4870 && !ppc_elf_hash_entry (h)->has_sda_refs
4871 && !readonly_dynrelocs (h))
4872 h->non_got_ref = 0;
4873 }
25dbc73a 4874 return TRUE;
252b5132 4875 }
25dbc73a 4876 else
a6aa5195 4877 h->plt.plist = NULL;
252b5132 4878
25dbc73a
AM
4879 /* If this is a weak symbol, and there is a real definition, the
4880 processor independent code will have arranged for us to see the
4881 real definition first, and we can just use the same value. */
4882 if (h->u.weakdef != NULL)
252b5132 4883 {
25dbc73a
AM
4884 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4885 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4886 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4887 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4888 if (ELIMINATE_COPY_RELOCS)
4889 h->non_got_ref = h->u.weakdef->non_got_ref;
4890 return TRUE;
4891 }
dc810e39 4892
25dbc73a
AM
4893 /* This is a reference to a symbol defined by a dynamic object which
4894 is not a function. */
252b5132 4895
25dbc73a
AM
4896 /* If we are creating a shared library, we must presume that the
4897 only references to the symbol are via the global offset table.
4898 For such cases we need not do anything here; the relocations will
4899 be handled correctly by relocate_section. */
4900 if (info->shared)
4901 return TRUE;
252b5132 4902
25dbc73a
AM
4903 /* If there are no references to this symbol that do not use the
4904 GOT, we don't need to generate a copy reloc. */
4905 if (!h->non_got_ref)
4906 return TRUE;
4907
cfd2c773
NS
4908 /* If we didn't find any dynamic relocs in read-only sections, then
4909 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4910 We can't do this if there are any small data relocations. This
4911 doesn't work on VxWorks, where we can not have dynamic
4912 relocations (other than copy and jump slot relocations) in an
4913 executable. */
4dc4a9a5 4914 if (ELIMINATE_COPY_RELOCS
cfd2c773 4915 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
4916 && !htab->is_vxworks
4917 && !h->def_regular
4918 && !readonly_dynrelocs (h))
25dbc73a 4919 {
625af618
AM
4920 h->non_got_ref = 0;
4921 return TRUE;
252b5132
RH
4922 }
4923
909272ee
AM
4924 if (h->size == 0)
4925 {
4926 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4927 h->root.root.string);
4928 return TRUE;
4929 }
4930
25dbc73a
AM
4931 /* We must allocate the symbol in our .dynbss section, which will
4932 become part of the .bss section of the executable. There will be
4933 an entry for this symbol in the .dynsym section. The dynamic
4934 object will contain position independent code, so all references
4935 from the dynamic object to this symbol will go through the global
4936 offset table. The dynamic linker will use the .dynsym entry to
4937 determine the address it must put in the global offset table, so
4938 both the dynamic object and the regular object will refer to the
4939 same memory location for the variable.
4940
4dc4a9a5
DJ
4941 Of course, if the symbol is referenced using SDAREL relocs, we
4942 must instead allocate it in .sbss. */
25dbc73a 4943
4dc4a9a5 4944 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4945 s = htab->dynsbss;
4946 else
4947 s = htab->dynbss;
4948 BFD_ASSERT (s != NULL);
4949
4950 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4951 copy the initial value out of the dynamic object and into the
4952 runtime process image. We need to remember the offset into the
4953 .rela.bss section we are going to use. */
4954 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4955 {
4956 asection *srel;
4957
4dc4a9a5 4958 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4959 srel = htab->relsbss;
4960 else
4961 srel = htab->relbss;
4962 BFD_ASSERT (srel != NULL);
4963 srel->size += sizeof (Elf32_External_Rela);
4964 h->needs_copy = 1;
4965 }
7619e7c7 4966
027297b7 4967 return _bfd_elf_adjust_dynamic_copy (h, s);
25dbc73a
AM
4968}
4969\f
ac39eb42
AM
4970/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4971 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4972 specifying the addend on the plt relocation. For -fpic code, the sym
4973 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4974 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
4975
4976static bfd_boolean
4977add_stub_sym (struct plt_entry *ent,
4978 struct elf_link_hash_entry *h,
ac39eb42 4979 struct bfd_link_info *info)
0ba07910
AM
4980{
4981 struct elf_link_hash_entry *sh;
4982 size_t len1, len2, len3;
4983 char *name;
ac39eb42
AM
4984 const char *stub;
4985 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4986
4987 if (info->shared || info->pie)
4988 stub = ".plt_pic32.";
4989 else
4990 stub = ".plt_call32.";
0ba07910
AM
4991
4992 len1 = strlen (h->root.root.string);
ac39eb42 4993 len2 = strlen (stub);
0ba07910
AM
4994 len3 = 0;
4995 if (ent->sec)
4996 len3 = strlen (ent->sec->name);
ac39eb42 4997 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
4998 if (name == NULL)
4999 return FALSE;
5000 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5001 if (ent->sec)
5002 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
5003 memcpy (name + 8 + len3, stub, len2);
5004 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
5005 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5006 if (sh == NULL)
5007 return FALSE;
5008 if (sh->root.type == bfd_link_hash_new)
5009 {
5010 sh->root.type = bfd_link_hash_defined;
5011 sh->root.u.def.section = htab->glink;
5012 sh->root.u.def.value = ent->glink_offset;
5013 sh->ref_regular = 1;
5014 sh->def_regular = 1;
5015 sh->ref_regular_nonweak = 1;
5016 sh->forced_local = 1;
5017 sh->non_elf = 0;
5018 }
5019 return TRUE;
5020}
5021
3b36f7e6
AM
5022/* Allocate NEED contiguous space in .got, and return the offset.
5023 Handles allocation of the got header when crossing 32k. */
5024
5025static bfd_vma
5026allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5027{
5028 bfd_vma where;
4a3dc543 5029 unsigned int max_before_header;
3b36f7e6 5030
4a3dc543 5031 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
5032 {
5033 where = htab->got->size;
5034 htab->got->size += need;
5035 }
3b36f7e6
AM
5036 else
5037 {
4a3dc543
RS
5038 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5039 if (need <= htab->got_gap)
3b36f7e6 5040 {
4a3dc543
RS
5041 where = max_before_header - htab->got_gap;
5042 htab->got_gap -= need;
5043 }
5044 else
5045 {
5046 if (htab->got->size + need > max_before_header
5047 && htab->got->size <= max_before_header)
5048 {
5049 htab->got_gap = max_before_header - htab->got->size;
5050 htab->got->size = max_before_header + htab->got_header_size;
5051 }
5052 where = htab->got->size;
5053 htab->got->size += need;
3b36f7e6 5054 }
3b36f7e6
AM
5055 }
5056 return where;
5057}
5058
25dbc73a 5059/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 5060
b34976b6 5061static bfd_boolean
25dbc73a 5062allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 5063{
25dbc73a
AM
5064 struct bfd_link_info *info = inf;
5065 struct ppc_elf_link_hash_entry *eh;
7619e7c7 5066 struct ppc_elf_link_hash_table *htab;
25dbc73a 5067 struct ppc_elf_dyn_relocs *p;
252b5132 5068
25dbc73a 5069 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5070 return TRUE;
252b5132 5071
25dbc73a
AM
5072 if (h->root.type == bfd_link_hash_warning)
5073 /* When warning symbols are created, they **replace** the "real"
5074 entry in the hash table, thus we never get to see the real
5075 symbol in a hash traversal. So look at it now. */
5076 h = (struct elf_link_hash_entry *) h->root.u.i.link;
e47cd125 5077
7619e7c7 5078 htab = ppc_elf_hash_table (info);
e054468f
AM
5079 if (htab->elf.dynamic_sections_created
5080 || h->type == STT_GNU_IFUNC)
252b5132 5081 {
a6aa5195
AM
5082 struct plt_entry *ent;
5083 bfd_boolean doneone = FALSE;
28e99bb6 5084 bfd_vma plt_offset = 0, glink_offset = 0;
e054468f 5085 bfd_boolean dyn;
28e99bb6 5086
a6aa5195
AM
5087 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5088 if (ent->plt.refcount > 0)
5089 {
5090 /* Make sure this symbol is output as a dynamic symbol. */
5091 if (h->dynindx == -1
e054468f
AM
5092 && !h->forced_local
5093 && !h->def_regular
5094 && htab->elf.dynamic_sections_created)
a6aa5195
AM
5095 {
5096 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5097 return FALSE;
5098 }
252b5132 5099
e054468f 5100 dyn = htab->elf.dynamic_sections_created;
a6aa5195 5101 if (info->shared
e054468f
AM
5102 || h->type == STT_GNU_IFUNC
5103 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
a6aa5195
AM
5104 {
5105 asection *s = htab->plt;
25f23106 5106 if (!dyn || h->dynindx == -1)
e054468f 5107 s = htab->iplt;
7619e7c7 5108
25f23106 5109 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
a6aa5195 5110 {
a6aa5195 5111 if (!doneone)
28e99bb6
AM
5112 {
5113 plt_offset = s->size;
5114 s->size += 4;
5115 }
5116 ent->plt.offset = plt_offset;
d7128ce4 5117
a6aa5195 5118 s = htab->glink;
28e99bb6
AM
5119 if (!doneone || info->shared || info->pie)
5120 {
5121 glink_offset = s->size;
5122 s->size += GLINK_ENTRY_SIZE;
5123 }
5124 if (!doneone
5125 && !info->shared
625af618 5126 && h->def_dynamic
a6aa5195
AM
5127 && !h->def_regular)
5128 {
5129 h->root.u.def.section = s;
28e99bb6 5130 h->root.u.def.value = glink_offset;
a6aa5195 5131 }
28e99bb6 5132 ent->glink_offset = glink_offset;
0ba07910
AM
5133
5134 if (htab->emit_stub_syms
ac39eb42 5135 && !add_stub_sym (ent, h, info))
0ba07910 5136 return FALSE;
a6aa5195
AM
5137 }
5138 else
5139 {
a6aa5195
AM
5140 if (!doneone)
5141 {
28e99bb6
AM
5142 /* If this is the first .plt entry, make room
5143 for the special first entry. */
5144 if (s->size == 0)
9d8504b1 5145 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
5146
5147 /* The PowerPC PLT is actually composed of two
5148 parts, the first part is 2 words (for a load
5149 and a jump), and then there is a remaining
5150 word available at the end. */
9d8504b1
PB
5151 plt_offset = (htab->plt_initial_entry_size
5152 + (htab->plt_slot_size
5153 * ((s->size
5154 - htab->plt_initial_entry_size)
5155 / htab->plt_entry_size)));
28e99bb6
AM
5156
5157 /* If this symbol is not defined in a regular
5158 file, and we are not generating a shared
de972ffa
AM
5159 library, then set the symbol to this location
5160 in the .plt. This is to avoid text
5161 relocations, and is required to make
28e99bb6
AM
5162 function pointers compare as equal between
5163 the normal executable and the shared library. */
5164 if (! info->shared
625af618 5165 && h->def_dynamic
28e99bb6
AM
5166 && !h->def_regular)
5167 {
5168 h->root.u.def.section = s;
5169 h->root.u.def.value = plt_offset;
5170 }
5171
9d8504b1
PB
5172 /* Make room for this entry. */
5173 s->size += htab->plt_entry_size;
5174 /* After the 8192nd entry, room for two entries
5175 is allocated. */
4a3dc543 5176 if (htab->plt_type == PLT_OLD
9d8504b1
PB
5177 && (s->size - htab->plt_initial_entry_size)
5178 / htab->plt_entry_size
5179 > PLT_NUM_SINGLE_ENTRIES)
5180 s->size += htab->plt_entry_size;
a6aa5195 5181 }
28e99bb6 5182 ent->plt.offset = plt_offset;
a6aa5195 5183 }
25dbc73a 5184
a6aa5195
AM
5185 /* We also need to make an entry in the .rela.plt section. */
5186 if (!doneone)
5187 {
25f23106
AM
5188 if (!htab->elf.dynamic_sections_created
5189 || h->dynindx == -1)
e054468f
AM
5190 htab->reliplt->size += sizeof (Elf32_External_Rela);
5191 else
9d8504b1 5192 {
e054468f
AM
5193 htab->relplt->size += sizeof (Elf32_External_Rela);
5194
5195 if (htab->plt_type == PLT_VXWORKS)
9d8504b1 5196 {
e054468f
AM
5197 /* Allocate space for the unloaded relocations. */
5198 if (!info->shared
5199 && htab->elf.dynamic_sections_created)
9d8504b1 5200 {
e054468f
AM
5201 if (ent->plt.offset
5202 == (bfd_vma) htab->plt_initial_entry_size)
5203 {
5204 htab->srelplt2->size
5205 += (sizeof (Elf32_External_Rela)
5206 * VXWORKS_PLTRESOLVE_RELOCS);
5207 }
5208
9d8504b1 5209 htab->srelplt2->size
e054468f
AM
5210 += (sizeof (Elf32_External_Rela)
5211 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
9d8504b1
PB
5212 }
5213
e054468f
AM
5214 /* Every PLT entry has an associated GOT entry in
5215 .got.plt. */
5216 htab->sgotplt->size += 4;
9d8504b1 5217 }
9d8504b1 5218 }
a6aa5195
AM
5219 doneone = TRUE;
5220 }
5221 }
5222 else
5223 ent->plt.offset = (bfd_vma) -1;
a6aa5195 5224 }
2ce859a1
AM
5225 else
5226 ent->plt.offset = (bfd_vma) -1;
5227
5228 if (!doneone)
5229 {
5230 h->plt.plist = NULL;
5231 h->needs_plt = 0;
5232 }
25dbc73a
AM
5233 }
5234 else
5235 {
a6aa5195 5236 h->plt.plist = NULL;
25dbc73a
AM
5237 h->needs_plt = 0;
5238 }
5239
5240 eh = (struct ppc_elf_link_hash_entry *) h;
5241 if (eh->elf.got.refcount > 0)
5242 {
d6e14abc
AM
5243 bfd_boolean dyn;
5244 unsigned int need;
5245
25dbc73a
AM
5246 /* Make sure this symbol is output as a dynamic symbol. */
5247 if (eh->elf.dynindx == -1
b099ab9f 5248 && !eh->elf.forced_local
25f23106 5249 && eh->elf.type != STT_GNU_IFUNC
b099ab9f 5250 && htab->elf.dynamic_sections_created)
25dbc73a
AM
5251 {
5252 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 5253 return FALSE;
25dbc73a 5254 }
252b5132 5255
d6e14abc
AM
5256 need = 0;
5257 if ((eh->tls_mask & TLS_TLS) != 0)
25dbc73a 5258 {
d6e14abc 5259 if ((eh->tls_mask & TLS_LD) != 0)
252b5132 5260 {
d6e14abc
AM
5261 if (!eh->elf.def_dynamic)
5262 /* We'll just use htab->tlsld_got.offset. This should
5263 always be the case. It's a little odd if we have
5264 a local dynamic reloc against a non-local symbol. */
5265 htab->tlsld_got.refcount += 1;
5266 else
3b36f7e6 5267 need += 8;
252b5132 5268 }
d6e14abc
AM
5269 if ((eh->tls_mask & TLS_GD) != 0)
5270 need += 8;
5271 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5272 need += 4;
5273 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 5274 need += 4;
d6e14abc
AM
5275 }
5276 else
5277 need += 4;
5278 if (need == 0)
5279 eh->elf.got.offset = (bfd_vma) -1;
5280 else
5281 {
25f23106 5282 asection *rsec = NULL;
3b36f7e6 5283 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM
5284 dyn = htab->elf.dynamic_sections_created;
5285 if ((info->shared
5286 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5287 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5288 || eh->elf.root.type != bfd_link_hash_undefweak))
25f23106
AM
5289 rsec = htab->relgot;
5290 else if (h->type == STT_GNU_IFUNC)
5291 rsec = htab->reliplt;
5292 if (rsec != NULL)
252b5132 5293 {
3b36f7e6
AM
5294 /* All the entries we allocated need relocs.
5295 Except LD only needs one. */
d6e14abc
AM
5296 if ((eh->tls_mask & TLS_LD) != 0
5297 && eh->elf.def_dynamic)
3b36f7e6 5298 need -= 4;
25f23106 5299 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 5300 }
25dbc73a
AM
5301 }
5302 }
5303 else
5304 eh->elf.got.offset = (bfd_vma) -1;
252b5132 5305
b099ab9f 5306 if (eh->dyn_relocs == NULL
de972ffa 5307 || !htab->elf.dynamic_sections_created)
25dbc73a 5308 return TRUE;
252b5132 5309
25dbc73a
AM
5310 /* In the shared -Bsymbolic case, discard space allocated for
5311 dynamic pc-relative relocs against symbols which turn out to be
5312 defined in regular objects. For the normal shared case, discard
5313 space for relocs that have become local due to symbol visibility
5314 changes. */
5315
5316 if (info->shared)
5317 {
5318 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 5319 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
5320 generated via assembly. We want calls to protected symbols to
5321 resolve directly to the function rather than going via the plt.
5322 If people want function pointer comparisons to work as expected
5323 then they should avoid writing weird assembly. */
5324 if (SYMBOL_CALLS_LOCAL (info, h))
5325 {
5326 struct ppc_elf_dyn_relocs **pp;
5327
5328 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 5329 {
25dbc73a
AM
5330 p->count -= p->pc_count;
5331 p->pc_count = 0;
5332 if (p->count == 0)
5333 *pp = p->next;
5334 else
5335 pp = &p->next;
252b5132 5336 }
25dbc73a 5337 }
252b5132 5338
3348747a
NS
5339 if (htab->is_vxworks)
5340 {
5341 struct ppc_elf_dyn_relocs **pp;
5342
5343 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5344 {
5345 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5346 *pp = p->next;
5347 else
5348 pp = &p->next;
5349 }
5350 }
5351
89200bf8
AM
5352 /* Discard relocs on undefined symbols that must be local. */
5353 if (eh->dyn_relocs != NULL
5354 && h->root.type == bfd_link_hash_undefined
5355 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5356 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5357 eh->dyn_relocs = NULL;
5358
25dbc73a
AM
5359 /* Also discard relocs on undefined weak syms with non-default
5360 visibility. */
cab87ef9
AM
5361 if (eh->dyn_relocs != NULL
5362 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 5363 {
dfbb6ac9
AM
5364 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5365 eh->dyn_relocs = NULL;
5366
5367 /* Make sure undefined weak symbols are output as a dynamic
5368 symbol in PIEs. */
5369 else if (h->dynindx == -1
e054468f
AM
5370 && !h->forced_local
5371 && !h->def_regular)
dfbb6ac9
AM
5372 {
5373 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5374 return FALSE;
5375 }
25dbc73a
AM
5376 }
5377 }
5378 else if (ELIMINATE_COPY_RELOCS)
5379 {
5380 /* For the non-shared case, discard space for relocs against
5381 symbols which turn out to need copy relocs or are not
5382 dynamic. */
7619e7c7 5383
25dbc73a 5384 if (!h->non_got_ref
25dbc73a
AM
5385 && !h->def_regular)
5386 {
5387 /* Make sure this symbol is output as a dynamic symbol.
5388 Undefined weak syms won't yet be marked as dynamic. */
5389 if (h->dynindx == -1
25f23106 5390 && !h->forced_local)
25dbc73a
AM
5391 {
5392 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5393 return FALSE;
5394 }
7619e7c7 5395
25dbc73a
AM
5396 /* If that succeeded, we know we'll be keeping all the
5397 relocs. */
5398 if (h->dynindx != -1)
5399 goto keep;
5400 }
252b5132 5401
25dbc73a 5402 eh->dyn_relocs = NULL;
252b5132 5403
25dbc73a
AM
5404 keep: ;
5405 }
252b5132 5406
25dbc73a
AM
5407 /* Finally, allocate space. */
5408 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5409 {
5410 asection *sreloc = elf_section_data (p->sec)->sreloc;
25f23106
AM
5411 if (!htab->elf.dynamic_sections_created)
5412 sreloc = htab->reliplt;
25dbc73a
AM
5413 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5414 }
252b5132 5415
25dbc73a
AM
5416 return TRUE;
5417}
7619e7c7 5418
625af618
AM
5419/* Set DF_TEXTREL if we find any dynamic relocs that apply to
5420 read-only sections. */
7619e7c7 5421
25dbc73a 5422static bfd_boolean
625af618 5423maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 5424{
25dbc73a
AM
5425 if (h->root.type == bfd_link_hash_indirect)
5426 return TRUE;
252b5132 5427
25dbc73a
AM
5428 if (h->root.type == bfd_link_hash_warning)
5429 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5430
625af618 5431 if (readonly_dynrelocs (h))
25dbc73a 5432 {
625af618 5433 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 5434
625af618
AM
5435 /* Not an error, just cut short the traversal. */
5436 return FALSE;
25dbc73a
AM
5437 }
5438 return TRUE;
5439}
5440
5441/* Set the sizes of the dynamic sections. */
5442
5443static bfd_boolean
5444ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5445 struct bfd_link_info *info)
5446{
5447 struct ppc_elf_link_hash_table *htab;
5448 asection *s;
5449 bfd_boolean relocs;
5450 bfd *ibfd;
7fce784e 5451
252b5132 5452#ifdef DEBUG
25dbc73a 5453 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 5454#endif
252b5132 5455
25dbc73a
AM
5456 htab = ppc_elf_hash_table (info);
5457 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 5458
25dbc73a
AM
5459 if (elf_hash_table (info)->dynamic_sections_created)
5460 {
5461 /* Set the contents of the .interp section to the interpreter. */
5462 if (info->executable)
5463 {
5464 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5465 BFD_ASSERT (s != NULL);
5466 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5467 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5468 }
5469 }
252b5132 5470
4a3dc543 5471 if (htab->plt_type == PLT_OLD)
d7128ce4 5472 htab->got_header_size = 16;
4a3dc543 5473 else if (htab->plt_type == PLT_NEW)
d7128ce4 5474 htab->got_header_size = 12;
252b5132 5475
25dbc73a
AM
5476 /* Set up .got offsets for local syms, and space for local dynamic
5477 relocs. */
5478 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5479 {
5480 bfd_signed_vma *local_got;
5481 bfd_signed_vma *end_local_got;
e054468f
AM
5482 struct plt_entry **local_plt;
5483 struct plt_entry **end_local_plt;
25dbc73a
AM
5484 char *lgot_masks;
5485 bfd_size_type locsymcount;
5486 Elf_Internal_Shdr *symtab_hdr;
7fce784e 5487
0c8d6e5c 5488 if (!is_ppc_elf (ibfd))
25dbc73a 5489 continue;
7fce784e 5490
25dbc73a
AM
5491 for (s = ibfd->sections; s != NULL; s = s->next)
5492 {
5493 struct ppc_elf_dyn_relocs *p;
252b5132 5494
25dbc73a
AM
5495 for (p = ((struct ppc_elf_dyn_relocs *)
5496 elf_section_data (s)->local_dynrel);
5497 p != NULL;
5498 p = p->next)
5499 {
5500 if (!bfd_is_abs_section (p->sec)
5501 && bfd_is_abs_section (p->sec->output_section))
5502 {
5503 /* Input section has been discarded, either because
5504 it is a copy of a linkonce section or due to
5505 linker script /DISCARD/, so we'll be discarding
5506 the relocs too. */
7fce784e 5507 }
3348747a
NS
5508 else if (htab->is_vxworks
5509 && strcmp (p->sec->output_section->name,
5510 ".tls_vars") == 0)
5511 {
5512 /* Relocations in vxworks .tls_vars sections are
5513 handled specially by the loader. */
5514 }
25dbc73a 5515 else if (p->count != 0)
7fce784e 5516 {
25f23106
AM
5517 asection *sreloc = elf_section_data (p->sec)->sreloc;
5518 if (!htab->elf.dynamic_sections_created)
5519 sreloc = htab->reliplt;
5520 sreloc->size += p->count * sizeof (Elf32_External_Rela);
25dbc73a
AM
5521 if ((p->sec->output_section->flags
5522 & (SEC_READONLY | SEC_ALLOC))
5523 == (SEC_READONLY | SEC_ALLOC))
5524 info->flags |= DF_TEXTREL;
7fce784e 5525 }
252b5132 5526 }
252b5132 5527 }
252b5132 5528
25dbc73a
AM
5529 local_got = elf_local_got_refcounts (ibfd);
5530 if (!local_got)
5531 continue;
252b5132 5532
0ffa91dd 5533 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
5534 locsymcount = symtab_hdr->sh_info;
5535 end_local_got = local_got + locsymcount;
e054468f
AM
5536 local_plt = (struct plt_entry **) end_local_got;
5537 end_local_plt = local_plt + locsymcount;
5538 lgot_masks = (char *) end_local_plt;
25dbc73a
AM
5539 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5540 if (*local_got > 0)
5541 {
d6e14abc
AM
5542 unsigned int need = 0;
5543 if ((*lgot_masks & TLS_TLS) != 0)
25dbc73a 5544 {
d6e14abc
AM
5545 if ((*lgot_masks & TLS_GD) != 0)
5546 need += 8;
5547 if ((*lgot_masks & TLS_LD) != 0)
5548 htab->tlsld_got.refcount += 1;
5549 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5550 need += 4;
5551 if ((*lgot_masks & TLS_DTPREL) != 0)
5552 need += 4;
25dbc73a 5553 }
d6e14abc
AM
5554 else
5555 need += 4;
5556 if (need == 0)
5557 *local_got = (bfd_vma) -1;
25dbc73a
AM
5558 else
5559 {
3b36f7e6 5560 *local_got = allocate_got (htab, need);
25dbc73a 5561 if (info->shared)
3b36f7e6
AM
5562 htab->relgot->size += (need
5563 * (sizeof (Elf32_External_Rela) / 4));
25f23106
AM
5564 else if ((*lgot_masks & PLT_IFUNC) != 0)
5565 htab->reliplt->size += (need
5566 * (sizeof (Elf32_External_Rela) / 4));
25dbc73a
AM
5567 }
5568 }
5569 else
5570 *local_got = (bfd_vma) -1;
e054468f
AM
5571
5572 if (htab->is_vxworks)
5573 continue;
5574
5575 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5576 for (; local_plt < end_local_plt; ++local_plt)
5577 {
5578 struct plt_entry *ent;
5579 bfd_boolean doneone = FALSE;
5580 bfd_vma plt_offset = 0, glink_offset = 0;
5581
5582 for (ent = *local_plt; ent != NULL; ent = ent->next)
5583 if (ent->plt.refcount > 0)
5584 {
5585 asection *s = htab->iplt;
5586
5587 if (!doneone)
5588 {
5589 plt_offset = s->size;
5590 s->size += 4;
5591 }
5592 ent->plt.offset = plt_offset;
5593
5594 s = htab->glink;
5595 if (!doneone || info->shared || info->pie)
5596 {
5597 glink_offset = s->size;
5598 s->size += GLINK_ENTRY_SIZE;
5599 }
5600 ent->glink_offset = glink_offset;
5601
5602 if (!doneone)
5603 {
25f23106 5604 htab->reliplt->size += sizeof (Elf32_External_Rela);
e054468f
AM
5605 doneone = TRUE;
5606 }
5607 }
5608 else
5609 ent->plt.offset = (bfd_vma) -1;
5610 }
25dbc73a 5611 }
252b5132 5612
b7fcf6f6
AM
5613 /* Allocate space for global sym dynamic relocs. */
5614 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5615
3b36f7e6
AM
5616 if (htab->tlsld_got.refcount > 0)
5617 {
5618 htab->tlsld_got.offset = allocate_got (htab, 8);
5619 if (info->shared)
5620 htab->relgot->size += sizeof (Elf32_External_Rela);
5621 }
5622 else
5623 htab->tlsld_got.offset = (bfd_vma) -1;
5624
4a3dc543 5625 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
5626 {
5627 unsigned int g_o_t = 32768;
5628
4d962050
AM
5629 /* If we haven't allocated the header, do so now. When we get here,
5630 for old plt/got the got size will be 0 to 32764 (not allocated),
5631 or 32780 to 65536 (header allocated). For new plt/got, the
5632 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM
5633 if (htab->got->size <= 32768)
5634 {
5635 g_o_t = htab->got->size;
4a3dc543 5636 if (htab->plt_type == PLT_OLD)
4d962050 5637 g_o_t += 4;
3b36f7e6
AM
5638 htab->got->size += htab->got_header_size;
5639 }
3b36f7e6
AM
5640
5641 htab->elf.hgot->root.u.def.value = g_o_t;
5642 }
5643
e054468f
AM
5644 if (htab->glink != NULL
5645 && htab->glink->size != 0
5646 && htab->elf.dynamic_sections_created)
d7128ce4
AM
5647 {
5648 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM
5649 /* Space for the branch table. */
5650 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5651 /* Pad out to align the start of PLTresolve. */
5652 htab->glink->size += -htab->glink->size & 15;
d7128ce4 5653 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910
AM
5654
5655 if (htab->emit_stub_syms)
5656 {
5657 struct elf_link_hash_entry *sh;
5658 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5659 TRUE, FALSE, FALSE);
5660 if (sh == NULL)
5661 return FALSE;
5662 if (sh->root.type == bfd_link_hash_new)
5663 {
5664 sh->root.type = bfd_link_hash_defined;
5665 sh->root.u.def.section = htab->glink;
5666 sh->root.u.def.value = htab->glink_pltresolve;
5667 sh->ref_regular = 1;
5668 sh->def_regular = 1;
5669 sh->ref_regular_nonweak = 1;
5670 sh->forced_local = 1;
5671 sh->non_elf = 0;
5672 }
5673 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5674 TRUE, FALSE, FALSE);
5675 if (sh == NULL)
5676 return FALSE;
5677 if (sh->root.type == bfd_link_hash_new)
5678 {
5679 sh->root.type = bfd_link_hash_defined;
5680 sh->root.u.def.section = htab->glink;
5681 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5682 sh->ref_regular = 1;
5683 sh->def_regular = 1;
5684 sh->ref_regular_nonweak = 1;
5685 sh->forced_local = 1;
5686 sh->non_elf = 0;
5687 }
5688 }
d7128ce4
AM
5689 }
5690
25dbc73a
AM
5691 /* We've now determined the sizes of the various dynamic sections.
5692 Allocate memory for them. */
5693 relocs = FALSE;
5694 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 5695 {
9d8504b1
PB
5696 bfd_boolean strip_section = TRUE;
5697
25dbc73a
AM
5698 if ((s->flags & SEC_LINKER_CREATED) == 0)
5699 continue;
252b5132 5700
25dbc73a 5701 if (s == htab->plt
e054468f 5702 || s == htab->got)
25dbc73a 5703 {
9d8504b1
PB
5704 /* We'd like to strip these sections if they aren't needed, but if
5705 we've exported dynamic symbols from them we must leave them.
5706 It's too late to tell BFD to get rid of the symbols. */
e054468f 5707 if (htab->elf.hplt != NULL)
9d8504b1 5708 strip_section = FALSE;
25dbc73a
AM
5709 /* Strip this section if we don't need it; see the
5710 comment below. */
5711 }
e054468f
AM
5712 else if (s == htab->iplt
5713 || s == htab->glink
5714 || s == htab->sgotplt
5715 || s == htab->sbss
5716 || s == htab->dynbss
5717 || s == htab->dynsbss
5718 || s == htab->sdata[0].section
c9a2f333 5719 || s == htab->sdata[1].section)
25dbc73a 5720 {
c9a2f333 5721 /* Strip these too. */
25dbc73a 5722 }
0112cd26 5723 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
25dbc73a 5724 {
c456f082 5725 if (s->size != 0)
25dbc73a
AM
5726 {
5727 /* Remember whether there are any relocation sections. */
5728 relocs = TRUE;
252b5132 5729
25dbc73a
AM
5730 /* We use the reloc_count field as a counter if we need
5731 to copy relocs into the output file. */
5732 s->reloc_count = 0;
252b5132
RH
5733 }
5734 }
25dbc73a
AM
5735 else
5736 {
5737 /* It's not one of our sections, so don't allocate space. */
5738 continue;
5739 }
252b5132 5740
9d8504b1 5741 if (s->size == 0 && strip_section)
25dbc73a 5742 {
c456f082
AM
5743 /* If we don't need this section, strip it from the
5744 output file. This is mostly to handle .rela.bss and
5745 .rela.plt. We must create both sections in
5746 create_dynamic_sections, because they must be created
5747 before the linker maps input sections to output
5748 sections. The linker does that before
5749 adjust_dynamic_symbol is called, and it is that
5750 function which decides whether anything needs to go
5751 into these sections. */
8423293d 5752 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
5753 continue;
5754 }
7fce784e 5755
d7128ce4 5756 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
5757 continue;
5758
25dbc73a
AM
5759 /* Allocate memory for the section contents. */
5760 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5761 if (s->contents == NULL)
5762 return FALSE;
5763 }
252b5132 5764
25dbc73a 5765 if (htab->elf.dynamic_sections_created)
7619e7c7 5766 {
25dbc73a
AM
5767 /* Add some entries to the .dynamic section. We fill in the
5768 values later, in ppc_elf_finish_dynamic_sections, but we
5769 must add the entries now so that we get the correct size for
5770 the .dynamic section. The DT_DEBUG entry is filled in by the
5771 dynamic linker and used by the debugger. */
5772#define add_dynamic_entry(TAG, VAL) \
5773 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 5774
25dbc73a 5775 if (info->executable)
7619e7c7 5776 {
25dbc73a
AM
5777 if (!add_dynamic_entry (DT_DEBUG, 0))
5778 return FALSE;
7619e7c7
AM
5779 }
5780
25dbc73a 5781 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 5782 {
25dbc73a
AM
5783 if (!add_dynamic_entry (DT_PLTGOT, 0)
5784 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5785 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5786 || !add_dynamic_entry (DT_JMPREL, 0))
5787 return FALSE;
5788 }
7619e7c7 5789
d7128ce4
AM
5790 if (htab->glink != NULL && htab->glink->size != 0)
5791 {
1fe44d79 5792 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4
AM
5793 return FALSE;
5794 }
5795
25dbc73a
AM
5796 if (relocs)
5797 {
5798 if (!add_dynamic_entry (DT_RELA, 0)
5799 || !add_dynamic_entry (DT_RELASZ, 0)
5800 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5801 return FALSE;
5802 }
7619e7c7 5803
25dbc73a
AM
5804 /* If any dynamic relocs apply to a read-only section, then we
5805 need a DT_TEXTREL entry. */
5806 if ((info->flags & DF_TEXTREL) == 0)
625af618 5807 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 5808 info);
7619e7c7 5809
25dbc73a
AM
5810 if ((info->flags & DF_TEXTREL) != 0)
5811 {
5812 if (!add_dynamic_entry (DT_TEXTREL, 0))
5813 return FALSE;
7619e7c7 5814 }
7a2b07ff
NS
5815 if (htab->is_vxworks
5816 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5817 return FALSE;
5818 }
25dbc73a
AM
5819#undef add_dynamic_entry
5820
7619e7c7
AM
5821 return TRUE;
5822}
0eb4a168
AM
5823
5824/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5825
5826static bfd_boolean
5827ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5828{
5829 if (h->plt.plist != NULL
5830 && !h->def_regular
5831 && (!h->pointer_equality_needed
5832 || !h->ref_regular_nonweak))
5833 return FALSE;
5834
5835 return _bfd_elf_hash_symbol (h);
5836}
25dbc73a
AM
5837\f
5838#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5839
5840static const int shared_stub_entry[] =
5841 {
5842 0x7c0802a6, /* mflr 0 */
5843 0x429f0005, /* bcl 20, 31, .Lxxx */
5844 0x7d6802a6, /* mflr 11 */
5845 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5846 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5847 0x7c0803a6, /* mtlr 0 */
5848 0x7d6903a6, /* mtctr 11 */
5849 0x4e800420, /* bctr */
5850 };
5851
5852static const int stub_entry[] =
5853 {
5854 0x3d600000, /* lis 11,xxx@ha */
5855 0x396b0000, /* addi 11,11,xxx@l */
5856 0x7d6903a6, /* mtctr 11 */
5857 0x4e800420, /* bctr */
5858 };
5859
5860static bfd_boolean
5861ppc_elf_relax_section (bfd *abfd,
5862 asection *isec,
5863 struct bfd_link_info *link_info,
5864 bfd_boolean *again)
5865{
5866 struct one_fixup
5867 {
5868 struct one_fixup *next;
5869 asection *tsec;
5870 bfd_vma toff;
5871 bfd_vma trampoff;
5872 };
7619e7c7 5873
25dbc73a
AM
5874 Elf_Internal_Shdr *symtab_hdr;
5875 bfd_byte *contents = NULL;
5876 Elf_Internal_Sym *isymbuf = NULL;
5877 Elf_Internal_Rela *internal_relocs = NULL;
5878 Elf_Internal_Rela *irel, *irelend;
5879 struct one_fixup *fixups = NULL;
9bc4e62b 5880 unsigned changes = 0;
d7128ce4 5881 struct ppc_elf_link_hash_table *htab;
25dbc73a 5882 bfd_size_type trampoff;
a6aa5195 5883 asection *got2;
7619e7c7 5884
25dbc73a 5885 *again = FALSE;
7619e7c7 5886
c87b5a93
AM
5887 /* Nothing to do if there are no relocations, and no need to do
5888 anything with non-alloc sections. */
5889 if ((isec->flags & SEC_ALLOC) == 0
5890 || (isec->flags & SEC_RELOC) == 0
5891 || isec->reloc_count == 0)
25dbc73a 5892 return TRUE;
7619e7c7 5893
c8a1f254
NS
5894 /* We cannot represent the required PIC relocs in the output, so don't
5895 do anything. The linker doesn't support mixing -shared and -r
5896 anyway. */
5897 if (link_info->relocatable && link_info->shared)
5898 return TRUE;
5899
25dbc73a
AM
5900 trampoff = (isec->size + 3) & (bfd_vma) -4;
5901 /* Space for a branch around any trampolines. */
5902 trampoff += 4;
7619e7c7 5903
0ffa91dd 5904 symtab_hdr = &elf_symtab_hdr (abfd);
7619e7c7 5905
25dbc73a
AM
5906 /* Get a copy of the native relocations. */
5907 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5908 link_info->keep_memory);
5909 if (internal_relocs == NULL)
5910 goto error_return;
7619e7c7 5911
d7128ce4 5912 htab = ppc_elf_hash_table (link_info);
a6aa5195 5913 got2 = bfd_get_section_by_name (abfd, ".got2");
7619e7c7 5914
a6aa5195 5915 irelend = internal_relocs + isec->reloc_count;
25dbc73a 5916 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 5917 {
25dbc73a
AM
5918 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5919 bfd_vma symaddr, reladdr, toff, roff;
5920 asection *tsec;
5921 struct one_fixup *f;
5922 size_t insn_offset = 0;
5923 bfd_vma max_branch_offset, val;
5924 bfd_byte *hit_addr;
5925 unsigned long t0;
de972ffa 5926 struct elf_link_hash_entry *h;
25dbc73a 5927 unsigned char sym_type;
7619e7c7 5928
25dbc73a
AM
5929 switch (r_type)
5930 {
5931 case R_PPC_REL24:
5932 case R_PPC_LOCAL24PC:
5933 case R_PPC_PLTREL24:
5934 max_branch_offset = 1 << 25;
5935 break;
7619e7c7 5936
25dbc73a
AM
5937 case R_PPC_REL14:
5938 case R_PPC_REL14_BRTAKEN:
5939 case R_PPC_REL14_BRNTAKEN:
5940 max_branch_offset = 1 << 15;
5941 break;
7619e7c7 5942
25dbc73a
AM
5943 default:
5944 continue;
5945 }
7619e7c7 5946
25dbc73a 5947 /* Get the value of the symbol referred to by the reloc. */
de972ffa 5948 h = NULL;
25dbc73a
AM
5949 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5950 {
5951 /* A local symbol. */
5952 Elf_Internal_Sym *isym;
7fce784e 5953
25dbc73a
AM
5954 /* Read this BFD's local symbols. */
5955 if (isymbuf == NULL)
5956 {
5957 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5958 if (isymbuf == NULL)
5959 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5960 symtab_hdr->sh_info, 0,
5961 NULL, NULL, NULL);
5962 if (isymbuf == 0)
5963 goto error_return;
5964 }
5965 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5966 if (isym->st_shndx == SHN_UNDEF)
c8a1f254 5967 tsec = bfd_und_section_ptr;
25dbc73a
AM
5968 else if (isym->st_shndx == SHN_ABS)
5969 tsec = bfd_abs_section_ptr;
5970 else if (isym->st_shndx == SHN_COMMON)
5971 tsec = bfd_com_section_ptr;
5972 else
5973 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 5974
25dbc73a
AM
5975 toff = isym->st_value;
5976 sym_type = ELF_ST_TYPE (isym->st_info);
5977 }
5978 else
5979 {
5980 /* Global symbol handling. */
5981 unsigned long indx;
7619e7c7 5982
25dbc73a
AM
5983 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5984 h = elf_sym_hashes (abfd)[indx];
7619e7c7 5985
25dbc73a
AM
5986 while (h->root.type == bfd_link_hash_indirect
5987 || h->root.type == bfd_link_hash_warning)
5988 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5989
a6aa5195
AM
5990 tsec = NULL;
5991 toff = 0;
a6aa5195
AM
5992 if (tsec != NULL)
5993 ;
25dbc73a
AM
5994 else if (h->root.type == bfd_link_hash_defined
5995 || h->root.type == bfd_link_hash_defweak)
5996 {
5997 tsec = h->root.u.def.section;
5998 toff = h->root.u.def.value;
5999 }
c8a1f254
NS
6000 else if (h->root.type == bfd_link_hash_undefined
6001 || h->root.type == bfd_link_hash_undefweak)
6002 {
6003 tsec = bfd_und_section_ptr;
6004 toff = 0;
6005 }
25dbc73a
AM
6006 else
6007 continue;
7619e7c7 6008
25dbc73a
AM
6009 sym_type = h->type;
6010 }
7619e7c7 6011
de972ffa
AM
6012 if (is_branch_reloc (r_type))
6013 {
6014 struct plt_entry **plist = NULL;
6015
6016 if (h != NULL)
6017 plist = &h->plt.plist;
6018 else if (sym_type == STT_GNU_IFUNC)
6019 {
6020 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6021 struct plt_entry **local_plt = (struct plt_entry **)
6022 (local_got_offsets + symtab_hdr->sh_info);
6023 plist = local_plt + ELF32_R_SYM (irel->r_info);
6024 }
6025 if (plist != NULL)
6026 {
6027 bfd_vma addend = 0;
6028 struct plt_entry *ent;
6029
6030 if (r_type == R_PPC_PLTREL24)
6031 addend = irel->r_addend;
6032 ent = find_plt_ent (plist, got2, addend);
6033 if (ent != NULL)
6034 {
6035 if (htab->plt_type == PLT_NEW
6036 || h == NULL
6037 || !htab->elf.dynamic_sections_created
6038 || h->dynindx == -1)
6039 {
6040 tsec = htab->glink;
6041 toff = ent->glink_offset;
6042 }
6043 else
6044 {
6045 tsec = htab->plt;
6046 toff = ent->plt.offset;
6047 }
6048 }
6049 }
6050 }
6051
25dbc73a
AM
6052 /* If the branch and target are in the same section, you have
6053 no hope of adding stubs. We'll error out later should the
6054 branch overflow. */
6055 if (tsec == isec)
6056 continue;
6057
6058 /* There probably isn't any reason to handle symbols in
6059 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6060 attribute for a code section, and we are only looking at
6061 branches. However, implement it correctly here as a
6062 reference for other target relax_section functions. */
6063 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6064 {
6065 /* At this stage in linking, no SEC_MERGE symbol has been
6066 adjusted, so all references to such symbols need to be
6067 passed through _bfd_merged_section_offset. (Later, in
6068 relocate_section, all SEC_MERGE symbols *except* for
6069 section symbols have been adjusted.)
6070
6071 gas may reduce relocations against symbols in SEC_MERGE
6072 sections to a relocation against the section symbol when
6073 the original addend was zero. When the reloc is against
6074 a section symbol we should include the addend in the
6075 offset passed to _bfd_merged_section_offset, since the
6076 location of interest is the original symbol. On the
6077 other hand, an access to "sym+addend" where "sym" is not
6078 a section symbol should not include the addend; Such an
6079 access is presumed to be an offset from "sym"; The
6080 location of interest is just "sym". */
6081 if (sym_type == STT_SECTION)
6082 toff += irel->r_addend;
7619e7c7 6083
25dbc73a
AM
6084 toff = _bfd_merged_section_offset (abfd, &tsec,
6085 elf_section_data (tsec)->sec_info,
6086 toff);
7619e7c7 6087
25dbc73a
AM
6088 if (sym_type != STT_SECTION)
6089 toff += irel->r_addend;
6090 }
a6aa5195
AM
6091 /* PLTREL24 addends are special. */
6092 else if (r_type != R_PPC_PLTREL24)
25dbc73a 6093 toff += irel->r_addend;
7619e7c7 6094
7de713b9
AM
6095 /* Attempted -shared link of non-pic code loses. */
6096 if (tsec->output_section == NULL)
6097 continue;
6098
25dbc73a 6099 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7619e7c7 6100
25dbc73a
AM
6101 roff = irel->r_offset;
6102 reladdr = isec->output_section->vma + isec->output_offset + roff;
7619e7c7 6103
25dbc73a 6104 /* If the branch is in range, no need to do anything. */
c8a1f254
NS
6105 if (tsec != bfd_und_section_ptr
6106 && (!link_info->relocatable
6107 /* A relocatable link may have sections moved during
6108 final link, so do not presume they remain in range. */
6109 || tsec->output_section == isec->output_section)
6110 && symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
25dbc73a 6111 continue;
252b5132 6112
25dbc73a
AM
6113 /* Look for an existing fixup to this address. */
6114 for (f = fixups; f ; f = f->next)
6115 if (f->tsec == tsec && f->toff == toff)
6116 break;
6117
6118 if (f == NULL)
7619e7c7 6119 {
25dbc73a
AM
6120 size_t size;
6121 unsigned long stub_rtype;
252b5132 6122
25dbc73a
AM
6123 val = trampoff - roff;
6124 if (val >= max_branch_offset)
6125 /* Oh dear, we can't reach a trampoline. Don't try to add
6126 one. We'll report an error later. */
6127 continue;
252b5132 6128
25dbc73a
AM
6129 if (link_info->shared)
6130 {
6131 size = 4 * ARRAY_SIZE (shared_stub_entry);
6132 insn_offset = 12;
6133 stub_rtype = R_PPC_RELAX32PC;
6134 }
6135 else
6136 {
6137 size = 4 * ARRAY_SIZE (stub_entry);
6138 insn_offset = 0;
6139 stub_rtype = R_PPC_RELAX32;
6140 }
dc810e39 6141
25dbc73a
AM
6142 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
6143 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
6144 abort ();
d7128ce4
AM
6145 if (tsec == htab->plt
6146 || tsec == htab->glink)
25dbc73a 6147 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
252b5132 6148
25dbc73a
AM
6149 /* Hijack the old relocation. Since we need two
6150 relocations for this use a "composite" reloc. */
6151 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6152 stub_rtype);
6153 irel->r_offset = trampoff + insn_offset;
e7d92e2e
AM
6154 if (r_type == R_PPC_PLTREL24)
6155 irel->r_addend = 0;
252b5132 6156
25dbc73a
AM
6157 /* Record the fixup so we don't do it again this section. */
6158 f = bfd_malloc (sizeof (*f));
6159 f->next = fixups;
6160 f->tsec = tsec;
6161 f->toff = toff;
6162 f->trampoff = trampoff;
6163 fixups = f;
252b5132 6164
25dbc73a 6165 trampoff += size;
9bc4e62b 6166 changes++;
25dbc73a
AM
6167 }
6168 else
6169 {
6170 val = f->trampoff - roff;
6171 if (val >= max_branch_offset)
6172 continue;
252b5132 6173
25dbc73a
AM
6174 /* Nop out the reloc, since we're finalizing things here. */
6175 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6176 }
252b5132 6177
25dbc73a
AM
6178 /* Get the section contents. */
6179 if (contents == NULL)
6180 {
6181 /* Get cached copy if it exists. */
6182 if (elf_section_data (isec)->this_hdr.contents != NULL)
6183 contents = elf_section_data (isec)->this_hdr.contents;
6184 else
6185 {
6186 /* Go get them off disk. */
6187 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6188 goto error_return;
6189 }
6190 }
252b5132 6191
25dbc73a
AM
6192 /* Fix up the existing branch to hit the trampoline. */
6193 hit_addr = contents + roff;
6194 switch (r_type)
6195 {
6196 case R_PPC_REL24:
6197 case R_PPC_LOCAL24PC:
6198 case R_PPC_PLTREL24:
6199 t0 = bfd_get_32 (abfd, hit_addr);
6200 t0 &= ~0x3fffffc;
6201 t0 |= val & 0x3fffffc;
6202 bfd_put_32 (abfd, t0, hit_addr);
6203 break;
252b5132 6204
25dbc73a
AM
6205 case R_PPC_REL14:
6206 case R_PPC_REL14_BRTAKEN:
6207 case R_PPC_REL14_BRNTAKEN:
6208 t0 = bfd_get_32 (abfd, hit_addr);
6209 t0 &= ~0xfffc;
6210 t0 |= val & 0xfffc;
6211 bfd_put_32 (abfd, t0, hit_addr);
6212 break;
6213 }
6214 }
252b5132 6215
25dbc73a 6216 /* Write out the trampolines. */
25dbc73a
AM
6217 if (fixups != NULL)
6218 {
6219 const int *stub;
6220 bfd_byte *dest;
6221 bfd_vma val;
6222 int i, size;
252b5132 6223
25dbc73a
AM
6224 do
6225 {
6226 struct one_fixup *f = fixups;
6227 fixups = fixups->next;
6228 free (f);
6229 }
6230 while (fixups);
252b5132 6231
515ef31d 6232 contents = bfd_realloc_or_free (contents, trampoff);
25dbc73a
AM
6233 if (contents == NULL)
6234 goto error_return;
252b5132 6235
25dbc73a
AM
6236 isec->size = (isec->size + 3) & (bfd_vma) -4;
6237 /* Branch around the trampolines. */
e7d92e2e 6238 val = B + trampoff - isec->size;
25dbc73a
AM
6239 dest = contents + isec->size;
6240 isec->size = trampoff;
6241 bfd_put_32 (abfd, val, dest);
6242 dest += 4;
252b5132 6243
25dbc73a
AM
6244 if (link_info->shared)
6245 {
6246 stub = shared_stub_entry;
6247 size = ARRAY_SIZE (shared_stub_entry);
6248 }
6249 else
6250 {
6251 stub = stub_entry;
6252 size = ARRAY_SIZE (stub_entry);
6253 }
252b5132 6254
25dbc73a
AM
6255 i = 0;
6256 while (dest < contents + trampoff)
252b5132 6257 {
25dbc73a
AM
6258 bfd_put_32 (abfd, stub[i], dest);
6259 i++;
6260 if (i == size)
6261 i = 0;
6262 dest += 4;
252b5132 6263 }
25dbc73a 6264 BFD_ASSERT (i == 0);
252b5132
RH
6265 }
6266
25dbc73a
AM
6267 if (isymbuf != NULL
6268 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 6269 {
25dbc73a
AM
6270 if (! link_info->keep_memory)
6271 free (isymbuf);
252b5132 6272 else
25dbc73a
AM
6273 {
6274 /* Cache the symbols for elf_link_input_bfd. */
6275 symtab_hdr->contents = (unsigned char *) isymbuf;
6276 }
252b5132
RH
6277 }
6278
25dbc73a
AM
6279 if (contents != NULL
6280 && elf_section_data (isec)->this_hdr.contents != contents)
6281 {
9bc4e62b 6282 if (!changes && !link_info->keep_memory)
25dbc73a
AM
6283 free (contents);
6284 else
6285 {
6286 /* Cache the section contents for elf_link_input_bfd. */
6287 elf_section_data (isec)->this_hdr.contents = contents;
6288 }
6289 }
252b5132 6290
9bc4e62b 6291 if (changes != 0)
25dbc73a 6292 {
9bc4e62b
NS
6293 /* Append sufficient NOP relocs so we can write out relocation
6294 information for the trampolines. */
6295 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6296 * sizeof (*new_relocs));
6297 unsigned ix;
6298
6299 if (!new_relocs)
6300 goto error_return;
6301 memcpy (new_relocs, internal_relocs,
6302 isec->reloc_count * sizeof (*new_relocs));
6303 for (ix = changes; ix--;)
6304 {
6305 irel = new_relocs + ix + isec->reloc_count;
6306
6307 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6308 }
6309 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 6310 free (internal_relocs);
9bc4e62b
NS
6311 elf_section_data (isec)->relocs = new_relocs;
6312 isec->reloc_count += changes;
6313 elf_section_data (isec)->rel_hdr.sh_size
6314 += changes * elf_section_data (isec)->rel_hdr.sh_entsize;
25dbc73a 6315 }
9bc4e62b
NS
6316 else if (elf_section_data (isec)->relocs != internal_relocs)
6317 free (internal_relocs);
252b5132 6318
9bc4e62b 6319 *again = changes != 0;
c8a1f254
NS
6320 if (!*again && link_info->relocatable)
6321 {
6322 /* Convert the internal relax relocs to external form. */
6323 for (irel = internal_relocs; irel < irelend; irel++)
6324 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX32)
6325 {
6326 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6327
6328 /* Rewrite the reloc and convert one of the trailing nop
6329 relocs to describe this relocation. */
6330 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6331 /* The relocs are at the bottom 2 bytes */
6332 irel[0].r_offset += 2;
6333 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6334 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6335 irel[1].r_offset += 4;
6336 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6337 irel++;
6338 }
6339 }
6340
b34976b6 6341 return TRUE;
25dbc73a
AM
6342
6343 error_return:
6344 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6345 free (isymbuf);
6346 if (contents != NULL
6347 && elf_section_data (isec)->this_hdr.contents != contents)
6348 free (contents);
6349 if (internal_relocs != NULL
6350 && elf_section_data (isec)->relocs != internal_relocs)
6351 free (internal_relocs);
6352 return FALSE;
252b5132 6353}
252b5132 6354\f
8a696751
AM
6355/* What to do when ld finds relocations against symbols defined in
6356 discarded sections. */
6357
6358static unsigned int
6359ppc_elf_action_discarded (asection *sec)
6360{
6361 if (strcmp (".fixup", sec->name) == 0)
6362 return 0;
6363
6364 if (strcmp (".got2", sec->name) == 0)
6365 return 0;
6366
6367 return _bfd_elf_default_action_discarded (sec);
6368}
c9a2f333 6369\f
25dbc73a 6370/* Fill in the address for a pointer generated in a linker section. */
252b5132 6371
25dbc73a 6372static bfd_vma
76750a2f 6373elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
6374 elf_linker_section_t *lsect,
6375 struct elf_link_hash_entry *h,
6376 bfd_vma relocation,
2bb04cf2 6377 const Elf_Internal_Rela *rel)
25dbc73a
AM
6378{
6379 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 6380
25dbc73a 6381 BFD_ASSERT (lsect != NULL);
252b5132 6382
25dbc73a 6383 if (h != NULL)
252b5132 6384 {
25dbc73a
AM
6385 /* Handle global symbol. */
6386 struct ppc_elf_link_hash_entry *eh;
252b5132 6387
25dbc73a 6388 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
6389 BFD_ASSERT (eh->elf.def_regular);
6390 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
6391 }
6392 else
6393 {
6394 /* Handle local symbol. */
6395 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 6396
0c8d6e5c 6397 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 6398 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
6399 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6400 }
252b5132 6401
76750a2f
AM
6402 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6403 rel->r_addend,
6404 lsect);
6405 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 6406
76750a2f
AM
6407 /* Offset will always be a multiple of four, so use the bottom bit
6408 as a "written" flag. */
6409 if ((linker_section_ptr->offset & 1) == 0)
6410 {
6411 bfd_put_32 (lsect->section->owner,
6412 relocation + linker_section_ptr->addend,
6413 lsect->section->contents + linker_section_ptr->offset);
6414 linker_section_ptr->offset += 1;
252b5132
RH
6415 }
6416
25dbc73a 6417 relocation = (lsect->section->output_offset
76750a2f 6418 + linker_section_ptr->offset - 1
c9a2f333 6419 - 0x8000);
252b5132 6420
25dbc73a
AM
6421#ifdef DEBUG
6422 fprintf (stderr,
6423 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6424 lsect->name, (long) relocation, (long) relocation);
6425#endif
252b5132 6426
25dbc73a
AM
6427 /* Subtract out the addend, because it will get added back in by the normal
6428 processing. */
6429 return relocation - linker_section_ptr->addend;
252b5132 6430}
25dbc73a 6431
e054468f
AM
6432#define PPC_LO(v) ((v) & 0xffff)
6433#define PPC_HI(v) (((v) >> 16) & 0xffff)
6434#define PPC_HA(v) PPC_HI ((v) + 0x8000)
6435
6436static void
6437write_glink_stub (struct plt_entry *ent, asection *plt_sec,
6438 struct bfd_link_info *info)
6439{
6440 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6441 bfd *output_bfd = info->output_bfd;
6442 bfd_vma plt;
6443 unsigned char *p;
6444
6445 plt = ((ent->plt.offset & ~1)
6446 + plt_sec->output_section->vma
6447 + plt_sec->output_offset);
6448 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6449
6450 if (info->shared || info->pie)
6451 {
6452 bfd_vma got = 0;
6453
6454 if (ent->addend >= 32768)
6455 got = (ent->addend
6456 + ent->sec->output_section->vma
6457 + ent->sec->output_offset);
6458 else if (htab->elf.hgot != NULL)
6459 got = SYM_VAL (htab->elf.hgot);
6460
6461 plt -= got;
6462
6463 if (plt + 0x8000 < 0x10000)
6464 {
6465 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6466 p += 4;
6467 bfd_put_32 (output_bfd, MTCTR_11, p);
6468 p += 4;
6469 bfd_put_32 (output_bfd, BCTR, p);
6470 p += 4;
6471 bfd_put_32 (output_bfd, NOP, p);
6472 p += 4;
6473 }
6474 else
6475 {
6476 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6477 p += 4;
6478 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6479 p += 4;
6480 bfd_put_32 (output_bfd, MTCTR_11, p);
6481 p += 4;
6482 bfd_put_32 (output_bfd, BCTR, p);
6483 p += 4;
6484 }
6485 }
6486 else
6487 {
6488 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6489 p += 4;
6490 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6491 p += 4;
6492 bfd_put_32 (output_bfd, MTCTR_11, p);
6493 p += 4;
6494 bfd_put_32 (output_bfd, BCTR, p);
6495 p += 4;
6496 }
6497}
6498
252b5132
RH
6499/* The RELOCATE_SECTION function is called by the ELF backend linker
6500 to handle the relocations for a section.
6501
6502 The relocs are always passed as Rela structures; if the section
6503 actually uses Rel structures, the r_addend field will always be
6504 zero.
6505
6506 This function is responsible for adjust the section contents as
6507 necessary, and (if using Rela relocs and generating a
1049f94e 6508 relocatable output file) adjusting the reloc addend as
252b5132
RH
6509 necessary.
6510
6511 This function does not have to worry about setting the reloc
6512 address or the reloc symbol index.
6513
6514 LOCAL_SYMS is a pointer to the swapped in local symbols.
6515
6516 LOCAL_SECTIONS is an array giving the section in the input file
6517 corresponding to the st_shndx field of each local symbol.
6518
6519 The global hash table entry for the global symbols can be found
6520 via elf_sym_hashes (input_bfd).
6521
1049f94e 6522 When generating relocatable output, this function must handle
252b5132
RH
6523 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6524 going to be the section symbol corresponding to the output
6525 section, which means that the addend must be adjusted
6526 accordingly. */
6527
b34976b6 6528static bfd_boolean
55fd94b0
AM
6529ppc_elf_relocate_section (bfd *output_bfd,
6530 struct bfd_link_info *info,
6531 bfd *input_bfd,
6532 asection *input_section,
6533 bfd_byte *contents,
6534 Elf_Internal_Rela *relocs,
6535 Elf_Internal_Sym *local_syms,
6536 asection **local_sections)
252b5132 6537{
7619e7c7
AM
6538 Elf_Internal_Shdr *symtab_hdr;
6539 struct elf_link_hash_entry **sym_hashes;
6540 struct ppc_elf_link_hash_table *htab;
6541 Elf_Internal_Rela *rel;
6542 Elf_Internal_Rela *relend;
6543 Elf_Internal_Rela outrel;
6544 bfd_byte *loc;
a6aa5195 6545 asection *got2, *sreloc = NULL;
252b5132 6546 bfd_vma *local_got_offsets;
b34976b6 6547 bfd_boolean ret = TRUE;
4fe5ca5b 6548 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 6549 bfd_boolean is_vxworks_tls;
b34976b6 6550
252b5132 6551#ifdef DEBUG
d003868e
AM
6552 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6553 "%ld relocations%s",
6554 input_bfd, input_section,
6555 (long) input_section->reloc_count,
6556 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH
6557#endif
6558
a6aa5195
AM
6559 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6560
e47cd125 6561 /* Initialize howto table if not already done. */
8da6118f 6562 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
6563 ppc_elf_howto_init ();
6564
7619e7c7 6565 htab = ppc_elf_hash_table (info);
252b5132 6566 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 6567 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 6568 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
6569 /* We have to handle relocations in vxworks .tls_vars sections
6570 specially, because the dynamic loader is 'weird'. */
6571 is_vxworks_tls = (htab->is_vxworks && info->shared
6572 && !strcmp (input_section->output_section->name,
6573 ".tls_vars"));
7619e7c7
AM
6574 rel = relocs;
6575 relend = relocs + input_section->reloc_count;
252b5132
RH
6576 for (; rel < relend; rel++)
6577 {
7619e7c7
AM
6578 enum elf_ppc_reloc_type r_type;
6579 bfd_vma addend;
6580 bfd_reloc_status_type r;
6581 Elf_Internal_Sym *sym;
6582 asection *sec;
6583 struct elf_link_hash_entry *h;
6584 const char *sym_name;
252b5132
RH
6585 reloc_howto_type *howto;
6586 unsigned long r_symndx;
6587 bfd_vma relocation;
7619e7c7 6588 bfd_vma branch_bit, insn, from;
7619e7c7
AM
6589 bfd_boolean unresolved_reloc;
6590 bfd_boolean warned;
6591 unsigned int tls_type, tls_mask, tls_gd;
e054468f 6592 struct plt_entry **ifunc;
7619e7c7 6593
55fd94b0
AM
6594 r_type = ELF32_R_TYPE (rel->r_info);
6595 sym = NULL;
6596 sec = NULL;
6597 h = NULL;
7619e7c7
AM
6598 unresolved_reloc = FALSE;
6599 warned = FALSE;
252b5132 6600 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 6601
252b5132
RH
6602 if (r_symndx < symtab_hdr->sh_info)
6603 {
6604 sym = local_syms + r_symndx;
6605 sec = local_sections[r_symndx];
26c61ae5 6606 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 6607
8517fae7 6608 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
6609 }
6610 else
6611 {
b2a8e766
AM
6612 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6613 r_symndx, symtab_hdr, sym_hashes,
6614 h, sec, relocation,
6615 unresolved_reloc, warned);
9abc968f 6616
252b5132 6617 sym_name = h->root.root.string;
7619e7c7
AM
6618 }
6619
ab96bf03
AM
6620 if (sec != NULL && elf_discarded_section (sec))
6621 {
6622 /* For relocs against symbols from removed linkonce sections,
6623 or sections discarded by a linker script, we just want the
6624 section contents zeroed. Avoid any special processing. */
6625 howto = NULL;
6626 if (r_type < R_PPC_max)
6627 howto = ppc_elf_howto_table[r_type];
6628 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6629 rel->r_info = 0;
6630 rel->r_addend = 0;
6631 continue;
6632 }
6633
6634 if (info->relocatable)
6635 {
6636 if (got2 != NULL
6637 && r_type == R_PPC_PLTREL24
6638 && rel->r_addend >= 32768)
6639 {
6640 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6641 addend specifies the GOT pointer offset within .got2. */
6642 rel->r_addend += got2->output_offset;
6643 }
6644 continue;
6645 }
6646
7619e7c7
AM
6647 /* TLS optimizations. Replace instruction sequences and relocs
6648 based on information we collected in tls_optimize. We edit
6649 RELOCS so that --emit-relocs will output something sensible
6650 for the final instruction stream. */
6651 tls_mask = 0;
6652 tls_gd = 0;
727fc41e
AM
6653 if (h != NULL)
6654 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6655 else if (local_got_offsets != NULL)
7619e7c7 6656 {
e054468f 6657 struct plt_entry **local_plt;
727fc41e 6658 char *lgot_masks;
e054468f
AM
6659 local_plt
6660 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6661 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
727fc41e 6662 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM
6663 }
6664
6665 /* Ensure reloc mapping code below stays sane. */
6666 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6667 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6668 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6669 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6670 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6671 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6672 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6673 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6674 abort ();
6675 switch (r_type)
6676 {
6677 default:
6678 break;
6679
6680 case R_PPC_GOT_TPREL16:
6681 case R_PPC_GOT_TPREL16_LO:
e054468f 6682 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
6683 && (tls_mask & TLS_TPREL) == 0)
6684 {
6685 bfd_vma insn;
4fe5ca5b 6686 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7619e7c7
AM
6687 insn &= 31 << 21;
6688 insn |= 0x3c020000; /* addis 0,2,0 */
4fe5ca5b 6689 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7619e7c7
AM
6690 r_type = R_PPC_TPREL16_HA;
6691 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6692 }
6693 break;
6694
6695 case R_PPC_TLS:
e054468f 6696 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
6697 && (tls_mask & TLS_TPREL) == 0)
6698 {
6699 bfd_vma insn, rtra;
6700 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6701 if ((insn & ((31 << 26) | (31 << 11)))
6702 == ((31 << 26) | (2 << 11)))
6703 rtra = insn & ((1 << 26) - (1 << 16));
6704 else if ((insn & ((31 << 26) | (31 << 16)))
6705 == ((31 << 26) | (2 << 16)))
6706 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6707 else
6708 abort ();
6709 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6710 /* add -> addi. */
6711 insn = 14 << 26;
6712 else if ((insn & (31 << 1)) == 23 << 1
6713 && ((insn & (31 << 6)) < 14 << 6
6714 || ((insn & (31 << 6)) >= 16 << 6
6715 && (insn & (31 << 6)) < 24 << 6)))
6716 /* load and store indexed -> dform. */
6717 insn = (32 | ((insn >> 6) & 31)) << 26;
6718 else if ((insn & (31 << 1)) == 21 << 1
6719 && (insn & (0x1a << 6)) == 0)
6720 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6721 insn = (((58 | ((insn >> 6) & 4)) << 26)
6722 | ((insn >> 6) & 1));
6723 else if ((insn & (31 << 1)) == 21 << 1
6724 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6725 /* lwax -> lwa. */
6726 insn = (58 << 26) | 2;
6727 else
6728 abort ();
6729 insn |= rtra;
6730 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6731 r_type = R_PPC_TPREL16_LO;
6732 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 6733
7619e7c7 6734 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
6735 PPC_TPREL16_LO which is at low-order half-word. */
6736 rel->r_offset += d_offset;
7619e7c7
AM
6737 }
6738 break;
6739
6740 case R_PPC_GOT_TLSGD16_HI:
6741 case R_PPC_GOT_TLSGD16_HA:
6742 tls_gd = TLS_TPRELGD;
e054468f 6743 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7619e7c7
AM
6744 goto tls_gdld_hi;
6745 break;
6746
6747 case R_PPC_GOT_TLSLD16_HI:
6748 case R_PPC_GOT_TLSLD16_HA:
e054468f 6749 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7
AM
6750 {
6751 tls_gdld_hi:
6752 if ((tls_mask & tls_gd) != 0)
6753 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6754 + R_PPC_GOT_TPREL16);
6755 else
6756 {
6757 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 6758 rel->r_offset -= d_offset;
7619e7c7
AM
6759 r_type = R_PPC_NONE;
6760 }
6761 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6762 }
6763 break;
6764
6765 case R_PPC_GOT_TLSGD16:
6766 case R_PPC_GOT_TLSGD16_LO:
6767 tls_gd = TLS_TPRELGD;
e054468f 6768 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 6769 goto tls_ldgd_opt;
7619e7c7
AM
6770 break;
6771
6772 case R_PPC_GOT_TLSLD16:
6773 case R_PPC_GOT_TLSLD16_LO:
e054468f 6774 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7 6775 {
3a71aa26 6776 unsigned int insn1, insn2;
b7fcf6f6 6777 bfd_vma offset;
7619e7c7 6778
b7fcf6f6 6779 tls_ldgd_opt:
727fc41e
AM
6780 offset = (bfd_vma) -1;
6781 /* If not using the newer R_PPC_TLSGD/LD to mark
6782 __tls_get_addr calls, we must trust that the call
6783 stays with its arg setup insns, ie. that the next
6784 reloc is the __tls_get_addr call associated with
6785 the current reloc. Edit both insns. */
6786 if (input_section->has_tls_get_addr_call
6787 && rel + 1 < relend
6788 && branch_reloc_hash_match (input_bfd, rel + 1,
6789 htab->tls_get_addr))
6790 offset = rel[1].r_offset;
b7fcf6f6
AM
6791 if ((tls_mask & tls_gd) != 0)
6792 {
6793 /* IE */
3a71aa26
AM
6794 insn1 = bfd_get_32 (output_bfd,
6795 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
6796 insn1 &= (1 << 26) - 1;
6797 insn1 |= 32 << 26; /* lwz */
727fc41e
AM
6798 if (offset != (bfd_vma) -1)
6799 {
6800 rel[1].r_info
6801 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6802 R_PPC_NONE);
6803 insn2 = 0x7c631214; /* add 3,3,2 */
6804 bfd_put_32 (output_bfd, insn2, contents + offset);
6805 }
b7fcf6f6
AM
6806 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6807 + R_PPC_GOT_TPREL16);
6808 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6809 }
6810 else
6811 {
6812 /* LE */
6813 insn1 = 0x3c620000; /* addis 3,2,0 */
7619e7c7
AM
6814 if (tls_gd == 0)
6815 {
b7fcf6f6 6816 /* Was an LD reloc. */
1d483afe
AM
6817 for (r_symndx = 0;
6818 r_symndx < symtab_hdr->sh_info;
6819 r_symndx++)
6820 if (local_sections[r_symndx] == sec)
6821 break;
6822 if (r_symndx >= symtab_hdr->sh_info)
6823 r_symndx = 0;
b7fcf6f6 6824 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
1d483afe
AM
6825 if (r_symndx != 0)
6826 rel->r_addend -= (local_syms[r_symndx].st_value
6827 + sec->output_offset
6828 + sec->output_section->vma);
7619e7c7 6829 }
b7fcf6f6
AM
6830 r_type = R_PPC_TPREL16_HA;
6831 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM
6832 if (offset != (bfd_vma) -1)
6833 {
6834 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6835 rel[1].r_offset = offset + d_offset;
6836 rel[1].r_addend = rel->r_addend;
6837 insn2 = 0x38630000; /* addi 3,3,0 */
6838 bfd_put_32 (output_bfd, insn2, contents + offset);
6839 }
b7fcf6f6
AM
6840 }
6841 bfd_put_32 (output_bfd, insn1,
6842 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
6843 if (tls_gd == 0)
6844 {
6845 /* We changed the symbol on an LD reloc. Start over
6846 in order to get h, sym, sec etc. right. */
6847 rel--;
6848 continue;
7619e7c7 6849 }
252b5132 6850 }
7619e7c7 6851 break;
727fc41e
AM
6852
6853 case R_PPC_TLSGD:
e054468f 6854 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
727fc41e
AM
6855 {
6856 unsigned int insn2;
6857 bfd_vma offset = rel->r_offset;
6858
6859 if ((tls_mask & TLS_TPRELGD) != 0)
6860 {
6861 /* IE */
6862 r_type = R_PPC_NONE;
6863 insn2 = 0x7c631214; /* add 3,3,2 */
6864 }
6865 else
6866 {
6867 /* LE */
6868 r_type = R_PPC_TPREL16_LO;
6869 rel->r_offset += d_offset;
6870 insn2 = 0x38630000; /* addi 3,3,0 */
6871 }
6872 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6873 bfd_put_32 (output_bfd, insn2, contents + offset);
6874 /* Zap the reloc on the _tls_get_addr call too. */
6875 BFD_ASSERT (offset == rel[1].r_offset);
6876 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6877 R_PPC_NONE);
6878 }
6879 break;
6880
6881 case R_PPC_TLSLD:
e054468f 6882 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
727fc41e
AM
6883 {
6884 unsigned int insn2;
6885
6886 for (r_symndx = 0;
6887 r_symndx < symtab_hdr->sh_info;
6888 r_symndx++)
6889 if (local_sections[r_symndx] == sec)
6890 break;
6891 if (r_symndx >= symtab_hdr->sh_info)
6892 r_symndx = 0;
6893 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6894 if (r_symndx != 0)
6895 rel->r_addend -= (local_syms[r_symndx].st_value
6896 + sec->output_offset
6897 + sec->output_section->vma);
6898
6899 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6900 rel->r_offset += d_offset;
6901 insn2 = 0x38630000; /* addi 3,3,0 */
6902 bfd_put_32 (output_bfd, insn2,
6903 contents + rel->r_offset - d_offset);
6904 /* Zap the reloc on the _tls_get_addr call too. */
6905 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
6906 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6907 R_PPC_NONE);
6908 rel--;
6909 continue;
6910 }
6911 break;
7619e7c7
AM
6912 }
6913
6914 /* Handle other relocations that tweak non-addend part of insn. */
6915 branch_bit = 0;
6916 switch (r_type)
6917 {
6918 default:
6919 break;
6920
6921 /* Branch taken prediction relocations. */
6922 case R_PPC_ADDR14_BRTAKEN:
6923 case R_PPC_REL14_BRTAKEN:
6924 branch_bit = BRANCH_PREDICT_BIT;
6925 /* Fall thru */
6926
4cc11e76 6927 /* Branch not taken prediction relocations. */
7619e7c7
AM
6928 case R_PPC_ADDR14_BRNTAKEN:
6929 case R_PPC_REL14_BRNTAKEN:
6930 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6931 insn &= ~BRANCH_PREDICT_BIT;
6932 insn |= branch_bit;
6933
6934 from = (rel->r_offset
6935 + input_section->output_offset
6936 + input_section->output_section->vma);
6937
6938 /* Invert 'y' bit if not the default. */
6939 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6940 insn ^= BRANCH_PREDICT_BIT;
6941
6942 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6943 break;
252b5132
RH
6944 }
6945
e054468f 6946 ifunc = NULL;
25f23106 6947 if (!htab->is_vxworks)
e054468f 6948 {
de972ffa
AM
6949 struct plt_entry *ent;
6950
e054468f
AM
6951 if (h != NULL)
6952 {
6953 if (h->type == STT_GNU_IFUNC)
6954 ifunc = &h->plt.plist;
6955 }
de972ffa
AM
6956 else if (local_got_offsets != NULL
6957 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
e054468f 6958 {
de972ffa 6959 struct plt_entry **local_plt;
e054468f 6960
de972ffa
AM
6961 local_plt = (struct plt_entry **) (local_got_offsets
6962 + symtab_hdr->sh_info);
6963 ifunc = local_plt + r_symndx;
e054468f 6964 }
e054468f 6965
de972ffa
AM
6966 ent = NULL;
6967 if (ifunc != NULL
6968 && (!info->shared
6969 || is_branch_reloc (r_type)))
6970 {
6971 addend = 0;
6972 if (r_type == R_PPC_PLTREL24)
6973 addend = rel->r_addend;
6974 ent = find_plt_ent (ifunc, got2, addend);
6975 }
6976 if (ent != NULL)
6977 {
e054468f
AM
6978 if (h == NULL && (ent->plt.offset & 1) == 0)
6979 {
6980 Elf_Internal_Rela rela;
6981 bfd_byte *loc;
6982
6983 rela.r_offset = (htab->iplt->output_section->vma
6984 + htab->iplt->output_offset
6985 + ent->plt.offset);
6986 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
6987 rela.r_addend = relocation;
25f23106
AM
6988 loc = htab->reliplt->contents;
6989 loc += (htab->reliplt->reloc_count++
6990 * sizeof (Elf32_External_Rela));
e054468f
AM
6991 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6992
6993 ent->plt.offset |= 1;
6994 }
6995 if (h == NULL && (ent->glink_offset & 1) == 0)
6996 {
6997 write_glink_stub (ent, htab->iplt, info);
6998 ent->glink_offset |= 1;
6999 }
7000
7001 unresolved_reloc = FALSE;
7002 if (htab->plt_type == PLT_NEW
7003 || !htab->elf.dynamic_sections_created
7004 || h == NULL)
7005 relocation = (htab->glink->output_section->vma
7006 + htab->glink->output_offset
7007 + (ent->glink_offset & ~1));
7008 else
7009 relocation = (htab->plt->output_section->vma
7010 + htab->plt->output_offset
7011 + ent->plt.offset);
7012 }
7013 }
7014
7619e7c7
AM
7015 addend = rel->r_addend;
7016 tls_type = 0;
7017 howto = NULL;
55fd94b0
AM
7018 if (r_type < R_PPC_max)
7019 howto = ppc_elf_howto_table[r_type];
7619e7c7 7020 switch (r_type)
252b5132
RH
7021 {
7022 default:
7619e7c7 7023 (*_bfd_error_handler)
d003868e
AM
7024 (_("%B: unknown relocation type %d for symbol %s"),
7025 input_bfd, (int) r_type, sym_name);
252b5132
RH
7026
7027 bfd_set_error (bfd_error_bad_value);
b34976b6 7028 ret = FALSE;
252b5132
RH
7029 continue;
7030
7619e7c7
AM
7031 case R_PPC_NONE:
7032 case R_PPC_TLS:
727fc41e
AM
7033 case R_PPC_TLSGD:
7034 case R_PPC_TLSLD:
7619e7c7
AM
7035 case R_PPC_EMB_MRKREF:
7036 case R_PPC_GNU_VTINHERIT:
7037 case R_PPC_GNU_VTENTRY:
7595d193
L
7038 continue;
7039
7619e7c7
AM
7040 /* GOT16 relocations. Like an ADDR16 using the symbol's
7041 address in the GOT as relocation value instead of the
7042 symbol's value itself. Also, create a GOT entry for the
7043 symbol and put the symbol value there. */
7044 case R_PPC_GOT_TLSGD16:
7045 case R_PPC_GOT_TLSGD16_LO:
7046 case R_PPC_GOT_TLSGD16_HI:
7047 case R_PPC_GOT_TLSGD16_HA:
7048 tls_type = TLS_TLS | TLS_GD;
7049 goto dogot;
7050
7051 case R_PPC_GOT_TLSLD16:
7052 case R_PPC_GOT_TLSLD16_LO:
7053 case R_PPC_GOT_TLSLD16_HI:
7054 case R_PPC_GOT_TLSLD16_HA:
7055 tls_type = TLS_TLS | TLS_LD;
7056 goto dogot;
7057
7058 case R_PPC_GOT_TPREL16:
7059 case R_PPC_GOT_TPREL16_LO:
7060 case R_PPC_GOT_TPREL16_HI:
7061 case R_PPC_GOT_TPREL16_HA:
7062 tls_type = TLS_TLS | TLS_TPREL;
7063 goto dogot;
7064
7065 case R_PPC_GOT_DTPREL16:
7066 case R_PPC_GOT_DTPREL16_LO:
7067 case R_PPC_GOT_DTPREL16_HI:
7068 case R_PPC_GOT_DTPREL16_HA:
7069 tls_type = TLS_TLS | TLS_DTPREL;
7070 goto dogot;
7071
7072 case R_PPC_GOT16:
7073 case R_PPC_GOT16_LO:
7074 case R_PPC_GOT16_HI:
7075 case R_PPC_GOT16_HA:
727fc41e 7076 tls_mask = 0;
7619e7c7
AM
7077 dogot:
7078 {
7079 /* Relocation is to the entry for this symbol in the global
7080 offset table. */
7081 bfd_vma off;
7082 bfd_vma *offp;
7083 unsigned long indx;
7084
7085 if (htab->got == NULL)
7086 abort ();
7087
7088 indx = 0;
7089 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 7090 && (h == NULL
f5385ebf 7091 || !h->def_dynamic))
7619e7c7
AM
7092 offp = &htab->tlsld_got.offset;
7093 else if (h != NULL)
7094 {
7095 bfd_boolean dyn;
7096 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 7097 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM
7098 || (info->shared
7099 && SYMBOL_REFERENCES_LOCAL (info, h)))
7100 /* This is actually a static link, or it is a
7101 -Bsymbolic link and the symbol is defined
7102 locally, or the symbol was forced to be local
7103 because of a version file. */
7104 ;
7105 else
7106 {
7107 indx = h->dynindx;
7108 unresolved_reloc = FALSE;
7109 }
7110 offp = &h->got.offset;
7111 }
7112 else
7113 {
7114 if (local_got_offsets == NULL)
7115 abort ();
7116 offp = &local_got_offsets[r_symndx];
7117 }
7118
7119 /* The offset must always be a multiple of 4. We use the
7120 least significant bit to record whether we have already
7121 processed this entry. */
7122 off = *offp;
7123 if ((off & 1) != 0)
7124 off &= ~1;
7125 else
7126 {
25f23106 7127 asection *rsec;
70bccea4
AM
7128 unsigned int tls_m = (tls_mask
7129 & (TLS_LD | TLS_GD | TLS_DTPREL
7130 | TLS_TPREL | TLS_TPRELGD));
7131
7132 if (offp == &htab->tlsld_got.offset)
7133 tls_m = TLS_LD;
7134 else if (h == NULL
f5385ebf 7135 || !h->def_dynamic)
70bccea4
AM
7136 tls_m &= ~TLS_LD;
7137
7138 /* We might have multiple got entries for this sym.
7139 Initialize them all. */
7140 do
7619e7c7 7141 {
70bccea4
AM
7142 int tls_ty = 0;
7143
7144 if ((tls_m & TLS_LD) != 0)
7619e7c7 7145 {
70bccea4
AM
7146 tls_ty = TLS_TLS | TLS_LD;
7147 tls_m &= ~TLS_LD;
7148 }
7149 else if ((tls_m & TLS_GD) != 0)
7150 {
7151 tls_ty = TLS_TLS | TLS_GD;
7152 tls_m &= ~TLS_GD;
7153 }
7154 else if ((tls_m & TLS_DTPREL) != 0)
7155 {
7156 tls_ty = TLS_TLS | TLS_DTPREL;
7157 tls_m &= ~TLS_DTPREL;
7158 }
7159 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7160 {
7161 tls_ty = TLS_TLS | TLS_TPREL;
7162 tls_m = 0;
7619e7c7 7163 }
7619e7c7 7164
70bccea4 7165 /* Generate relocs for the dynamic linker. */
25f23106 7166 rsec = NULL;
4e795f50 7167 if ((info->shared || indx != 0)
d6e14abc
AM
7168 && (offp == &htab->tlsld_got.offset
7169 || h == NULL
4e795f50
AM
7170 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7171 || h->root.type != bfd_link_hash_undefweak))
25f23106
AM
7172 rsec = htab->relgot;
7173 else if (ifunc != NULL)
7174 rsec = htab->reliplt;
7175 if (rsec != NULL)
7619e7c7 7176 {
70bccea4
AM
7177 outrel.r_offset = (htab->got->output_section->vma
7178 + htab->got->output_offset
7179 + off);
e515b051 7180 outrel.r_addend = 0;
70bccea4
AM
7181 if (tls_ty & (TLS_LD | TLS_GD))
7182 {
7183 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
7184 if (tls_ty == (TLS_TLS | TLS_GD))
7185 {
25f23106
AM
7186 loc = rsec->contents;
7187 loc += (rsec->reloc_count++
70bccea4
AM
7188 * sizeof (Elf32_External_Rela));
7189 bfd_elf32_swap_reloca_out (output_bfd,
7190 &outrel, loc);
e515b051 7191 outrel.r_offset += 4;
70bccea4
AM
7192 outrel.r_info
7193 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
7194 }
7195 }
7196 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7197 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7198 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7199 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
25f23106 7200 else if (indx != 0)
70bccea4 7201 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
25f23106
AM
7202 else if (ifunc != NULL)
7203 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7204 else
7205 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
d6e14abc 7206 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM
7207 {
7208 outrel.r_addend += relocation;
7209 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 7210 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 7211 }
25f23106
AM
7212 loc = rsec->contents;
7213 loc += (rsec->reloc_count++
70bccea4
AM
7214 * sizeof (Elf32_External_Rela));
7215 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
7216 }
7217
70bccea4
AM
7218 /* Init the .got section contents if we're not
7219 emitting a reloc. */
7220 else
7619e7c7 7221 {
70bccea4
AM
7222 bfd_vma value = relocation;
7223
7b609f53
AM
7224 if (tls_ty == (TLS_TLS | TLS_LD))
7225 value = 1;
7226 else if (tls_ty != 0)
70bccea4 7227 {
e1918d23 7228 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 7229 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 7230 value += DTP_OFFSET - TP_OFFSET;
70bccea4 7231
7b609f53
AM
7232 if (tls_ty == (TLS_TLS | TLS_GD))
7233 {
7234 bfd_put_32 (output_bfd, value,
7235 htab->got->contents + off + 4);
7236 value = 1;
7237 }
70bccea4 7238 }
70bccea4
AM
7239 bfd_put_32 (output_bfd, value,
7240 htab->got->contents + off);
7619e7c7 7241 }
70bccea4
AM
7242
7243 off += 4;
7244 if (tls_ty & (TLS_LD | TLS_GD))
7245 off += 4;
7619e7c7 7246 }
70bccea4
AM
7247 while (tls_m != 0);
7248
7249 off = *offp;
7250 *offp = off | 1;
7619e7c7
AM
7251 }
7252
7253 if (off >= (bfd_vma) -2)
7254 abort ();
7255
70bccea4
AM
7256 if ((tls_type & TLS_TLS) != 0)
7257 {
7258 if (tls_type != (TLS_TLS | TLS_LD))
7259 {
7260 if ((tls_mask & TLS_LD) != 0
7261 && !(h == NULL
f5385ebf 7262 || !h->def_dynamic))
70bccea4
AM
7263 off += 8;
7264 if (tls_type != (TLS_TLS | TLS_GD))
7265 {
7266 if ((tls_mask & TLS_GD) != 0)
7267 off += 8;
7268 if (tls_type != (TLS_TLS | TLS_DTPREL))
7269 {
7270 if ((tls_mask & TLS_DTPREL) != 0)
7271 off += 4;
7272 }
7273 }
7274 }
7275 }
7276
e87d4038
AM
7277 relocation = (htab->got->output_section->vma
7278 + htab->got->output_offset
7279 + off
7280 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
7281
7282 /* Addends on got relocations don't make much sense.
7283 x+off@got is actually x@got+off, and since the got is
7284 generated by a hash table traversal, the value in the
7285 got at entry m+n bears little relation to the entry m. */
7286 if (addend != 0)
7287 (*_bfd_error_handler)
d003868e
AM
7288 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
7289 input_bfd,
7290 input_section,
7619e7c7 7291 (long) rel->r_offset,
7b609f53 7292 howto->name,
7619e7c7
AM
7293 sym_name);
7294 }
70bccea4 7295 break;
7619e7c7 7296
252b5132 7297 /* Relocations that need no special processing. */
7619e7c7 7298 case R_PPC_LOCAL24PC:
252b5132
RH
7299 /* It makes no sense to point a local relocation
7300 at a symbol not in this object. */
7b609f53 7301 if (unresolved_reloc)
252b5132 7302 {
464e1740
ILT
7303 if (! (*info->callbacks->undefined_symbol) (info,
7304 h->root.root.string,
7305 input_bfd,
7306 input_section,
5cc7c785 7307 rel->r_offset,
b34976b6
AM
7308 TRUE))
7309 return FALSE;
252b5132
RH
7310 continue;
7311 }
7312 break;
7313
7619e7c7
AM
7314 case R_PPC_DTPREL16:
7315 case R_PPC_DTPREL16_LO:
7316 case R_PPC_DTPREL16_HI:
7317 case R_PPC_DTPREL16_HA:
e1918d23 7318 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
7319 break;
7320
70bccea4
AM
7321 /* Relocations that may need to be propagated if this is a shared
7322 object. */
7619e7c7
AM
7323 case R_PPC_TPREL16:
7324 case R_PPC_TPREL16_LO:
7325 case R_PPC_TPREL16_HI:
7326 case R_PPC_TPREL16_HA:
e1918d23 7327 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
7328 /* The TPREL16 relocs shouldn't really be used in shared
7329 libs as they will result in DT_TEXTREL being set, but
7330 support them anyway. */
7331 goto dodyn;
7332
7333 case R_PPC_TPREL32:
e1918d23 7334 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
7335 goto dodyn;
7336
7337 case R_PPC_DTPREL32:
e1918d23 7338 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
7339 goto dodyn;
7340
e515b051
AM
7341 case R_PPC_DTPMOD32:
7342 relocation = 1;
7343 addend = 0;
7344 goto dodyn;
7345
d7128ce4
AM
7346 case R_PPC_REL16:
7347 case R_PPC_REL16_LO:
7348 case R_PPC_REL16_HI:
7349 case R_PPC_REL16_HA:
7350 break;
7351
7619e7c7 7352 case R_PPC_REL32:
625af618
AM
7353 if (h == NULL || h == htab->elf.hgot)
7354 break;
7355 /* fall through */
7356
7357 case R_PPC_ADDR32:
7358 case R_PPC_ADDR16:
7359 case R_PPC_ADDR16_LO:
7360 case R_PPC_ADDR16_HI:
7361 case R_PPC_ADDR16_HA:
7362 case R_PPC_UADDR32:
7363 case R_PPC_UADDR16:
7364 goto dodyn;
7365
7366 case R_PPC_REL24:
7619e7c7
AM
7367 case R_PPC_REL14:
7368 case R_PPC_REL14_BRTAKEN:
7369 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
7370 /* If these relocations are not to a named symbol, they can be
7371 handled right here, no need to bother the dynamic linker. */
89200bf8 7372 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 7373 || h == htab->elf.hgot)
252b5132 7374 break;
70bccea4 7375 /* fall through */
252b5132 7376
7619e7c7 7377 case R_PPC_ADDR24:
7619e7c7
AM
7378 case R_PPC_ADDR14:
7379 case R_PPC_ADDR14_BRTAKEN:
7380 case R_PPC_ADDR14_BRNTAKEN:
625af618
AM
7381 if (h != NULL && !info->shared)
7382 break;
7383 /* fall through */
7384
7619e7c7 7385 dodyn:
3348747a
NS
7386 if ((input_section->flags & SEC_ALLOC) == 0
7387 || is_vxworks_tls)
c87b5a93 7388 break;
c87b5a93 7389
ee05f2fe 7390 if ((info->shared
89200bf8
AM
7391 && !(h != NULL
7392 && ((h->root.type == bfd_link_hash_undefined
7393 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7394 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7395 || (h->root.type == bfd_link_hash_undefweak
7396 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 7397 && (must_be_dyn_reloc (info, r_type)
f6c52c13 7398 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM
7399 || (ELIMINATE_COPY_RELOCS
7400 && !info->shared
ee05f2fe
AM
7401 && h != NULL
7402 && h->dynindx != -1
f5385ebf 7403 && !h->non_got_ref
de972ffa 7404 && !h->def_regular))
252b5132 7405 {
0bb2d96a 7406 int skip;
252b5132
RH
7407
7408#ifdef DEBUG
55fd94b0
AM
7409 fprintf (stderr, "ppc_elf_relocate_section needs to "
7410 "create relocation for %s\n",
70bccea4
AM
7411 (h && h->root.root.string
7412 ? h->root.root.string : "<unknown>"));
252b5132
RH
7413#endif
7414
7415 /* When generating a shared object, these relocations
70bccea4
AM
7416 are copied into the output file to be resolved at run
7417 time. */
252b5132
RH
7418 if (sreloc == NULL)
7419 {
25f23106
AM
7420 sreloc = elf_section_data (input_section)->sreloc;
7421 if (!htab->elf.dynamic_sections_created)
7422 sreloc = htab->reliplt;
83bac4b0 7423 if (sreloc == NULL)
b34976b6 7424 return FALSE;
252b5132
RH
7425 }
7426
0bb2d96a 7427 skip = 0;
c629eae0
JJ
7428 outrel.r_offset =
7429 _bfd_elf_section_offset (output_bfd, info, input_section,
7430 rel->r_offset);
0bb2d96a
JJ
7431 if (outrel.r_offset == (bfd_vma) -1
7432 || outrel.r_offset == (bfd_vma) -2)
7433 skip = (int) outrel.r_offset;
252b5132
RH
7434 outrel.r_offset += (input_section->output_section->vma
7435 + input_section->output_offset);
7436
7437 if (skip)
7438 memset (&outrel, 0, sizeof outrel);
89200bf8
AM
7439 else if ((h != NULL
7440 && (h->root.type == bfd_link_hash_undefined
7441 || h->root.type == bfd_link_hash_undefweak))
7442 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 7443 {
7619e7c7 7444 unresolved_reloc = FALSE;
252b5132
RH
7445 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7446 outrel.r_addend = rel->r_addend;
7447 }
7448 else
7449 {
47388f4c
AM
7450 outrel.r_addend = relocation + rel->r_addend;
7451
25f23106 7452 if (r_type != R_PPC_ADDR32)
252b5132 7453 {
89200bf8 7454 long indx = 0;
252b5132 7455
25f23106
AM
7456 if (ifunc != NULL)
7457 {
7458 /* If we get here when building a static
7459 executable, then the libc startup function
7460 responsible for applying indirect function
7461 relocations is going to complain about
7462 the reloc type.
7463 If we get here when building a dynamic
7464 executable, it will be because we have
7465 a text relocation. The dynamic loader
7466 will set the text segment writable and
7467 non-executable to apply text relocations.
7468 So we'll segfault when trying to run the
7469 indirection function to resolve the reloc. */
7470 (*_bfd_error_handler)
7471 (_("%B(%A+0x%lx): relocation %s for indirect "
7472 "function %s unsupported"),
7473 input_bfd,
7474 input_section,
7475 (long) rel->r_offset,
7476 howto->name,
7477 sym_name);
7478 ret = FALSE;
7479 }
7480 else if (r_symndx == 0 || bfd_is_abs_section (sec))
89200bf8 7481 ;
252b5132
RH
7482 else if (sec == NULL || sec->owner == NULL)
7483 {
7484 bfd_set_error (bfd_error_bad_value);
89200bf8 7485 ret = FALSE;
252b5132
RH
7486 }
7487 else
7488 {
7489 asection *osec;
7490
47388f4c
AM
7491 /* We are turning this relocation into one
7492 against a section symbol. It would be
7493 proper to subtract the symbol's value,
7494 osec->vma, from the emitted reloc addend,
25f23106
AM
7495 but ld.so expects buggy relocs.
7496 FIXME: Why not always use a zero index? */
252b5132
RH
7497 osec = sec->output_section;
7498 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
7499 if (indx == 0)
7500 {
7501 osec = htab->elf.text_index_section;
7502 indx = elf_section_data (osec)->dynindx;
7503 }
7504 BFD_ASSERT (indx != 0);
252b5132 7505#ifdef DEBUG
74541ad4 7506 if (indx == 0)
e460dd0d 7507 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
7508 indx, osec->name, osec->flags,
7509 h->root.root.string);
252b5132
RH
7510#endif
7511 }
7512
7513 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132 7514 }
25f23106
AM
7515 else if (ifunc != NULL)
7516 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7517 else
7518 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
7519 }
7520
947216bf
AM
7521 loc = sreloc->contents;
7522 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7523 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 7524
2243deae 7525 if (skip == -1)
252b5132 7526 continue;
2243deae
L
7527
7528 /* This reloc will be computed at runtime. We clear the memory
7529 so that it contains predictable value. */
7530 if (! skip
7531 && ((input_section->flags & SEC_ALLOC) != 0
7532 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7533 {
7534 relocation = howto->pc_relative ? outrel.r_offset : 0;
7535 addend = 0;
7536 break;
7537 }
252b5132 7538 }
252b5132
RH
7539 break;
7540
b4a38de6
AM
7541 case R_PPC_RELAX32PC_PLT:
7542 case R_PPC_RELAX32_PLT:
de972ffa
AM
7543 if (h != NULL)
7544 {
7545 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7546 addend);
7547 if (htab->plt_type == PLT_NEW)
7548 relocation = (htab->glink->output_section->vma
7549 + htab->glink->output_offset
7550 + ent->glink_offset);
7551 else
7552 relocation = (htab->plt->output_section->vma
7553 + htab->plt->output_offset
7554 + ent->plt.offset);
7555 }
b4a38de6
AM
7556 if (r_type == R_PPC_RELAX32_PLT)
7557 goto relax32;
7558 /* Fall thru */
7559
f31a141e
AM
7560 case R_PPC_RELAX32PC:
7561 relocation -= (input_section->output_section->vma
7562 + input_section->output_offset
7563 + rel->r_offset - 4);
7564 /* Fall thru */
b4a38de6 7565
deaaf2f3 7566 case R_PPC_RELAX32:
b4a38de6 7567 relax32:
9abc968f
AM
7568 {
7569 unsigned long t0;
7570 unsigned long t1;
7571
7572 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7573 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7574
7575 /* We're clearing the bits for R_PPC_ADDR16_HA
7576 and R_PPC_ADDR16_LO here. */
7577 t0 &= ~0xffff;
7578 t1 &= ~0xffff;
7579
7580 /* t0 is HA, t1 is LO */
7581 relocation += addend;
7582 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7583 t1 |= relocation & 0xffff;
7584
7585 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7586 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
9bc4e62b
NS
7587
7588 /* Rewrite the reloc and convert one of the trailing nop
7589 relocs to describe this relocation. */
7590 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7591 /* The relocs are at the bottom 2 bytes */
7592 rel[0].r_offset += 2;
7593 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7594 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7595 rel[1].r_offset += 4;
7596 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7597 rel++;
9abc968f 7598 }
8517fae7 7599 continue;
deaaf2f3 7600
70bccea4 7601 /* Indirect .sdata relocation. */
7619e7c7 7602 case R_PPC_EMB_SDAI16:
c9a2f333 7603 BFD_ASSERT (htab->sdata[0].section != NULL);
7619e7c7 7604 relocation
76750a2f
AM
7605 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7606 h, relocation, rel);
252b5132
RH
7607 break;
7608
70bccea4 7609 /* Indirect .sdata2 relocation. */
7619e7c7 7610 case R_PPC_EMB_SDA2I16:
c9a2f333 7611 BFD_ASSERT (htab->sdata[1].section != NULL);
7619e7c7 7612 relocation
76750a2f
AM
7613 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7614 h, relocation, rel);
252b5132
RH
7615 break;
7616
70bccea4
AM
7617 /* Handle the TOC16 reloc. We want to use the offset within the .got
7618 section, not the actual VMA. This is appropriate when generating
7619 an embedded ELF object, for which the .got section acts like the
7620 AIX .toc section. */
7619e7c7 7621 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
7622 if (sec == NULL || sec->output_section == NULL)
7623 {
7624 unresolved_reloc = TRUE;
7625 break;
7626 }
7627 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
f12123c0 7628 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
252b5132 7629
3b4f3a11 7630 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
7631 break;
7632
7619e7c7 7633 case R_PPC_PLTREL24:
e054468f 7634 if (h == NULL || ifunc != NULL)
6d78d0b9 7635 break;
252b5132 7636 /* Relocation is to the entry for this symbol in the
70bccea4 7637 procedure linkage table. */
a6aa5195 7638 {
3ec01793 7639 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2, addend);
252b5132 7640
a6aa5195
AM
7641 addend = 0;
7642 if (ent == NULL
7643 || htab->plt == NULL)
7644 {
7645 /* We didn't make a PLT entry for this symbol. This
7646 happens when statically linking PIC code, or when
7647 using -Bsymbolic. */
7648 break;
7649 }
252b5132 7650
a6aa5195 7651 unresolved_reloc = FALSE;
4a3dc543 7652 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
7653 relocation = (htab->glink->output_section->vma
7654 + htab->glink->output_offset
7655 + ent->glink_offset);
7656 else
7657 relocation = (htab->plt->output_section->vma
7658 + htab->plt->output_offset
7659 + ent->plt.offset);
7660 }
8da6118f 7661 break;
252b5132 7662
70bccea4 7663 /* Relocate against _SDA_BASE_. */
7619e7c7 7664 case R_PPC_SDAREL16:
252b5132
RH
7665 {
7666 const char *name;
7667
3b4f3a11
AM
7668 if (sec == NULL || sec->output_section == NULL)
7669 {
7670 unresolved_reloc = TRUE;
7671 break;
7672 }
7673
252b5132 7674 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7675 if (! ((CONST_STRNEQ (name, ".sdata")
5f819128 7676 && (name[6] == 0 || name[6] == '.'))
0112cd26 7677 || (CONST_STRNEQ (name, ".sbss")
5f819128 7678 && (name[5] == 0 || name[5] == '.'))))
252b5132 7679 {
55fd94b0 7680 (*_bfd_error_handler)
d003868e 7681 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7682 "in the wrong output section (%s)"),
d003868e 7683 input_bfd,
55fd94b0
AM
7684 sym_name,
7685 howto->name,
7686 name);
252b5132 7687 }
e87d4038 7688 addend -= SYM_VAL (htab->sdata[0].sym);
252b5132
RH
7689 }
7690 break;
7691
70bccea4 7692 /* Relocate against _SDA2_BASE_. */
7619e7c7 7693 case R_PPC_EMB_SDA2REL:
252b5132
RH
7694 {
7695 const char *name;
7696
3b4f3a11
AM
7697 if (sec == NULL || sec->output_section == NULL)
7698 {
7699 unresolved_reloc = TRUE;
7700 break;
7701 }
7702
252b5132 7703 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26
NC
7704 if (! (CONST_STRNEQ (name, ".sdata2")
7705 || CONST_STRNEQ (name, ".sbss2")))
252b5132 7706 {
55fd94b0 7707 (*_bfd_error_handler)
d003868e 7708 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7709 "in the wrong output section (%s)"),
d003868e 7710 input_bfd,
55fd94b0
AM
7711 sym_name,
7712 howto->name,
7713 name);
c3668558 7714
252b5132 7715 bfd_set_error (bfd_error_bad_value);
b34976b6 7716 ret = FALSE;
252b5132
RH
7717 continue;
7718 }
e87d4038 7719 addend -= SYM_VAL (htab->sdata[1].sym);
252b5132
RH
7720 }
7721 break;
7722
70bccea4 7723 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7
AM
7724 case R_PPC_EMB_SDA21:
7725 case R_PPC_EMB_RELSDA:
252b5132
RH
7726 {
7727 const char *name;
7728 int reg;
7729
3b4f3a11
AM
7730 if (sec == NULL || sec->output_section == NULL)
7731 {
7732 unresolved_reloc = TRUE;
7733 break;
7734 }
7735
252b5132 7736 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7737 if (((CONST_STRNEQ (name, ".sdata")
5f819128 7738 && (name[6] == 0 || name[6] == '.'))
0112cd26 7739 || (CONST_STRNEQ (name, ".sbss")
5f819128 7740 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH
7741 {
7742 reg = 13;
e87d4038 7743 addend -= SYM_VAL (htab->sdata[0].sym);
252b5132 7744 }
0112cd26
NC
7745 else if (CONST_STRNEQ (name, ".sdata2")
7746 || CONST_STRNEQ (name, ".sbss2"))
252b5132
RH
7747 {
7748 reg = 2;
e87d4038 7749 addend -= SYM_VAL (htab->sdata[1].sym);
252b5132 7750 }
8da6118f
KH
7751 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7752 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
7753 {
7754 reg = 0;
7755 }
252b5132
RH
7756 else
7757 {
55fd94b0 7758 (*_bfd_error_handler)
d003868e 7759 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7760 "in the wrong output section (%s)"),
d003868e 7761 input_bfd,
55fd94b0
AM
7762 sym_name,
7763 howto->name,
7764 name);
252b5132
RH
7765
7766 bfd_set_error (bfd_error_bad_value);
b34976b6 7767 ret = FALSE;
252b5132
RH
7768 continue;
7769 }
7770
7771 if (r_type == R_PPC_EMB_SDA21)
7772 { /* fill in register field */
7619e7c7 7773 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 7774 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 7775 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
7776 }
7777 }
7778 break;
7779
70bccea4 7780 /* Relocate against the beginning of the section. */
7619e7c7
AM
7781 case R_PPC_SECTOFF:
7782 case R_PPC_SECTOFF_LO:
7783 case R_PPC_SECTOFF_HI:
7784 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
7785 if (sec == NULL || sec->output_section == NULL)
7786 {
7787 unresolved_reloc = TRUE;
7788 break;
7789 }
252b5132 7790 addend -= sec->output_section->vma;
252b5132
RH
7791 break;
7792
70bccea4 7793 /* Negative relocations. */
7619e7c7
AM
7794 case R_PPC_EMB_NADDR32:
7795 case R_PPC_EMB_NADDR16:
7796 case R_PPC_EMB_NADDR16_LO:
7797 case R_PPC_EMB_NADDR16_HI:
7798 case R_PPC_EMB_NADDR16_HA:
8da6118f 7799 addend -= 2 * relocation;
252b5132
RH
7800 break;
7801
7619e7c7
AM
7802 case R_PPC_COPY:
7803 case R_PPC_GLOB_DAT:
7804 case R_PPC_JMP_SLOT:
7805 case R_PPC_RELATIVE:
e054468f 7806 case R_PPC_IRELATIVE:
7619e7c7
AM
7807 case R_PPC_PLT32:
7808 case R_PPC_PLTREL32:
7809 case R_PPC_PLT16_LO:
7810 case R_PPC_PLT16_HI:
7811 case R_PPC_PLT16_HA:
7812 case R_PPC_ADDR30:
7813 case R_PPC_EMB_RELSEC16:
7814 case R_PPC_EMB_RELST_LO:
7815 case R_PPC_EMB_RELST_HI:
7816 case R_PPC_EMB_RELST_HA:
7817 case R_PPC_EMB_BIT_FLD:
7818 (*_bfd_error_handler)
d003868e
AM
7819 (_("%B: relocation %s is not yet supported for symbol %s."),
7820 input_bfd,
7619e7c7
AM
7821 howto->name,
7822 sym_name);
252b5132
RH
7823
7824 bfd_set_error (bfd_error_invalid_operation);
b34976b6 7825 ret = FALSE;
252b5132 7826 continue;
7619e7c7 7827 }
252b5132 7828
7619e7c7
AM
7829 /* Do any further special processing. */
7830 switch (r_type)
7831 {
7832 default:
7833 break;
7834
7835 case R_PPC_ADDR16_HA:
d7128ce4 7836 case R_PPC_REL16_HA:
7619e7c7
AM
7837 case R_PPC_SECTOFF_HA:
7838 case R_PPC_TPREL16_HA:
7839 case R_PPC_DTPREL16_HA:
7619e7c7
AM
7840 case R_PPC_EMB_NADDR16_HA:
7841 case R_PPC_EMB_RELST_HA:
7842 /* It's just possible that this symbol is a weak symbol
7b609f53 7843 that's not actually defined anywhere. In that case,
7619e7c7
AM
7844 'sec' would be NULL, and we should leave the symbol
7845 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
7846 if (sec == NULL)
7847 break;
7848 /* Fall thru */
7849
7850 case R_PPC_PLT16_HA:
7851 case R_PPC_GOT16_HA:
7852 case R_PPC_GOT_TLSGD16_HA:
7853 case R_PPC_GOT_TLSLD16_HA:
7854 case R_PPC_GOT_TPREL16_HA:
7855 case R_PPC_GOT_DTPREL16_HA:
7856 /* Add 0x10000 if sign bit in 0:15 is set.
7857 Bits 0:15 are not used. */
7858 addend += 0x8000;
7619e7c7 7859 break;
252b5132
RH
7860 }
7861
252b5132 7862#ifdef DEBUG
55fd94b0
AM
7863 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7864 "offset = %ld, addend = %ld\n",
252b5132 7865 howto->name,
8da6118f 7866 (int) r_type,
252b5132
RH
7867 sym_name,
7868 r_symndx,
7619e7c7 7869 (long) rel->r_offset,
8da6118f 7870 (long) addend);
252b5132
RH
7871#endif
7872
7619e7c7
AM
7873 if (unresolved_reloc
7874 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 7875 && h->def_dynamic))
7619e7c7
AM
7876 {
7877 (*_bfd_error_handler)
d003868e
AM
7878 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7879 input_bfd,
7880 input_section,
7619e7c7 7881 (long) rel->r_offset,
7b609f53 7882 howto->name,
7619e7c7
AM
7883 sym_name);
7884 ret = FALSE;
7885 }
7886
252b5132
RH
7887 r = _bfd_final_link_relocate (howto,
7888 input_bfd,
7889 input_section,
7890 contents,
7619e7c7 7891 rel->r_offset,
252b5132
RH
7892 relocation,
7893 addend);
7894
7619e7c7 7895 if (r != bfd_reloc_ok)
252b5132 7896 {
7619e7c7 7897 if (r == bfd_reloc_overflow)
252b5132 7898 {
7619e7c7
AM
7899 if (warned)
7900 continue;
7901 if (h != NULL
7902 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH
7903 && howto->pc_relative)
7904 {
7905 /* Assume this is a call protected by other code that
7906 detect the symbol is undefined. If this is the case,
7907 we can safely ignore the overflow. If not, the
7908 program is hosed anyway, and a little warning isn't
7909 going to help. */
252b5132 7910
dc1bc0c9
RH
7911 continue;
7912 }
252b5132 7913
7619e7c7 7914 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 7915 (h ? &h->root : NULL),
7619e7c7
AM
7916 sym_name,
7917 howto->name,
7918 rel->r_addend,
7919 input_bfd,
7920 input_section,
7921 rel->r_offset))
7922 return FALSE;
dc1bc0c9
RH
7923 }
7924 else
7925 {
7619e7c7 7926 (*_bfd_error_handler)
d003868e
AM
7927 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7928 input_bfd, input_section,
7b609f53 7929 (long) rel->r_offset, howto->name, sym_name, (int) r);
7619e7c7 7930 ret = FALSE;
252b5132
RH
7931 }
7932 }
7933 }
7934
252b5132
RH
7935#ifdef DEBUG
7936 fprintf (stderr, "\n");
7937#endif
7938
7939 return ret;
7940}
252b5132 7941\f
25dbc73a
AM
7942/* Finish up dynamic symbol handling. We set the contents of various
7943 dynamic sections here. */
c5fccbec 7944
b34976b6 7945static bfd_boolean
25dbc73a
AM
7946ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7947 struct bfd_link_info *info,
7948 struct elf_link_hash_entry *h,
7949 Elf_Internal_Sym *sym)
e1a9cb8e 7950{
25dbc73a 7951 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
7952 struct plt_entry *ent;
7953 bfd_boolean doneone;
e1a9cb8e 7954
25dbc73a
AM
7955#ifdef DEBUG
7956 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7957 h->root.root.string);
7958#endif
e1a9cb8e 7959
25dbc73a
AM
7960 htab = ppc_elf_hash_table (info);
7961 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 7962
a6aa5195
AM
7963 doneone = FALSE;
7964 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7965 if (ent->plt.offset != (bfd_vma) -1)
7966 {
7967 if (!doneone)
7968 {
7969 Elf_Internal_Rela rela;
7970 bfd_byte *loc;
7971 bfd_vma reloc_index;
e1a9cb8e 7972
e054468f 7973 if (htab->plt_type == PLT_NEW
25f23106
AM
7974 || !htab->elf.dynamic_sections_created
7975 || h->dynindx == -1)
9d8504b1
PB
7976 reloc_index = ent->plt.offset / 4;
7977 else
7978 {
7979 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7980 / htab->plt_slot_size);
7981 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 7982 && htab->plt_type == PLT_OLD)
9d8504b1
PB
7983 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
7984 }
7985
a6aa5195
AM
7986 /* This symbol has an entry in the procedure linkage table.
7987 Set it up. */
e054468f 7988 if (htab->plt_type == PLT_VXWORKS
25f23106
AM
7989 && htab->elf.dynamic_sections_created
7990 && h->dynindx != -1)
a6aa5195 7991 {
9d8504b1
PB
7992 bfd_vma got_offset;
7993 const bfd_vma *plt_entry;
7994
7995 /* The first three entries in .got.plt are reserved. */
7996 got_offset = (reloc_index + 3) * 4;
7997
7998 /* Use the right PLT. */
7999 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8000 : ppc_elf_vxworks_plt_entry;
8001
8002 /* Fill in the .plt on VxWorks. */
8003 if (info->shared)
8004 {
9d8504b1 8005 bfd_put_32 (output_bfd,
e87d4038 8006 plt_entry[0] | PPC_HA (got_offset),
9d8504b1
PB
8007 htab->plt->contents + ent->plt.offset + 0);
8008 bfd_put_32 (output_bfd,
e87d4038 8009 plt_entry[1] | PPC_LO (got_offset),
9d8504b1
PB
8010 htab->plt->contents + ent->plt.offset + 4);
8011 }
8012 else
8013 {
e87d4038 8014 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
8015
8016 bfd_put_32 (output_bfd,
e87d4038 8017 plt_entry[0] | PPC_HA (got_loc),
9d8504b1
PB
8018 htab->plt->contents + ent->plt.offset + 0);
8019 bfd_put_32 (output_bfd,
e87d4038 8020 plt_entry[1] | PPC_LO (got_loc),
9d8504b1
PB
8021 htab->plt->contents + ent->plt.offset + 4);
8022 }
8023
8024 bfd_put_32 (output_bfd, plt_entry[2],
8025 htab->plt->contents + ent->plt.offset + 8);
8026 bfd_put_32 (output_bfd, plt_entry[3],
8027 htab->plt->contents + ent->plt.offset + 12);
8028
8029 /* This instruction is an immediate load. The value loaded is
8030 the byte offset of the R_PPC_JMP_SLOT relocation from the
8031 start of the .rela.plt section. The value is stored in the
8032 low-order 16 bits of the load instruction. */
8033 /* NOTE: It appears that this is now an index rather than a
8034 prescaled offset. */
8035 bfd_put_32 (output_bfd,
8036 plt_entry[4] | reloc_index,
8037 htab->plt->contents + ent->plt.offset + 16);
8038 /* This instruction is a PC-relative branch whose target is
8039 the start of the PLT section. The address of this branch
8040 instruction is 20 bytes beyond the start of this PLT entry.
8041 The address is encoded in bits 6-29, inclusive. The value
8042 stored is right-shifted by two bits, permitting a 26-bit
8043 offset. */
8044 bfd_put_32 (output_bfd,
8045 (plt_entry[5]
8046 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8047 htab->plt->contents + ent->plt.offset + 20);
8048 bfd_put_32 (output_bfd, plt_entry[6],
8049 htab->plt->contents + ent->plt.offset + 24);
8050 bfd_put_32 (output_bfd, plt_entry[7],
8051 htab->plt->contents + ent->plt.offset + 28);
8052
8053 /* Fill in the GOT entry corresponding to this PLT slot with
8054 the address immediately after the the "bctr" instruction
8055 in this PLT entry. */
8056 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8057 + htab->plt->output_offset
8058 + ent->plt.offset + 16),
8059 htab->sgotplt->contents + got_offset);
8060
8061 if (!info->shared)
8062 {
8063 /* Fill in a couple of entries in .rela.plt.unloaded. */
8064 loc = htab->srelplt2->contents
8065 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8066 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8067 * sizeof (Elf32_External_Rela));
8068
8069 /* Provide the @ha relocation for the first instruction. */
8070 rela.r_offset = (htab->plt->output_section->vma
8071 + htab->plt->output_offset
8072 + ent->plt.offset + 2);
636ce3f5 8073 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
8074 R_PPC_ADDR16_HA);
8075 rela.r_addend = got_offset;
8076 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8077 loc += sizeof (Elf32_External_Rela);
8078
8079 /* Provide the @l relocation for the second instruction. */
8080 rela.r_offset = (htab->plt->output_section->vma
8081 + htab->plt->output_offset
8082 + ent->plt.offset + 6);
636ce3f5 8083 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
8084 R_PPC_ADDR16_LO);
8085 rela.r_addend = got_offset;
8086 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8087 loc += sizeof (Elf32_External_Rela);
8088
8089 /* Provide a relocation for the GOT entry corresponding to this
8090 PLT slot. Point it at the middle of the .plt entry. */
8091 rela.r_offset = (htab->sgotplt->output_section->vma
8092 + htab->sgotplt->output_offset
8093 + got_offset);
7325306f 8094 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
8095 R_PPC_ADDR32);
8096 rela.r_addend = ent->plt.offset + 16;
8097 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8098 }
8099
8100 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8101 In particular, the offset for the relocation is not the
8102 address of the PLT entry for this function, as specified
8103 by the ABI. Instead, the offset is set to the address of
8104 the GOT slot for this function. See EABI 4.4.4.1. */
8105 rela.r_offset = (htab->sgotplt->output_section->vma
8106 + htab->sgotplt->output_offset
8107 + got_offset);
8108
a6aa5195
AM
8109 }
8110 else
8111 {
e054468f 8112 asection *splt = htab->plt;
25f23106
AM
8113 if (!htab->elf.dynamic_sections_created
8114 || h->dynindx == -1)
e054468f
AM
8115 splt = htab->iplt;
8116
8117 rela.r_offset = (splt->output_section->vma
8118 + splt->output_offset
9d8504b1 8119 + ent->plt.offset);
e054468f 8120 if (htab->plt_type == PLT_OLD
25f23106
AM
8121 || !htab->elf.dynamic_sections_created
8122 || h->dynindx == -1)
9d8504b1
PB
8123 {
8124 /* We don't need to fill in the .plt. The ppc dynamic
8125 linker will fill it in. */
8126 }
8127 else
8128 {
8129 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8130 + htab->glink->output_section->vma
8131 + htab->glink->output_offset);
8132 bfd_put_32 (output_bfd, val,
e054468f 8133 splt->contents + ent->plt.offset);
9d8504b1 8134 }
a6aa5195 8135 }
e1a9cb8e 8136
a6aa5195 8137 /* Fill in the entry in the .rela.plt section. */
a6aa5195 8138 rela.r_addend = 0;
e054468f
AM
8139 if (!htab->elf.dynamic_sections_created
8140 || h->dynindx == -1)
8141 {
8142 BFD_ASSERT (h->type == STT_GNU_IFUNC
8143 && h->def_regular
8144 && (h->root.type == bfd_link_hash_defined
8145 || h->root.type == bfd_link_hash_defweak));
8146 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8147 rela.r_addend = SYM_VAL (h);
8148 }
8149 else
8150 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
e1a9cb8e 8151
25f23106
AM
8152 if (!htab->elf.dynamic_sections_created
8153 || h->dynindx == -1)
8154 loc = (htab->reliplt->contents
8155 + (htab->reliplt->reloc_count++
8156 * sizeof (Elf32_External_Rela)));
e054468f 8157 else
25f23106
AM
8158 loc = (htab->relplt->contents
8159 + reloc_index * sizeof (Elf32_External_Rela));
a6aa5195 8160 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 8161
a6aa5195
AM
8162 if (!h->def_regular)
8163 {
0eb4a168
AM
8164 /* Mark the symbol as undefined, rather than as
8165 defined in the .plt section. Leave the value if
8166 there were any relocations where pointer equality
8167 matters (this is a clue for the dynamic linker, to
8168 make function pointer comparisons work between an
8169 application and shared library), otherwise set it
8170 to zero. */
a6aa5195 8171 sym->st_shndx = SHN_UNDEF;
0eb4a168 8172 if (!h->pointer_equality_needed)
a6aa5195 8173 sym->st_value = 0;
0eb4a168
AM
8174 else if (!h->ref_regular_nonweak)
8175 {
625af618
AM
8176 /* This breaks function pointer comparisons, but
8177 that is better than breaking tests for a NULL
0eb4a168 8178 function pointer. */
0eb4a168
AM
8179 sym->st_value = 0;
8180 }
a6aa5195 8181 }
de972ffa
AM
8182 else if (h->type == STT_GNU_IFUNC
8183 && !info->shared)
8184 {
8185 /* Set the value of ifunc symbols in a non-pie
8186 executable to the glink entry. This is to avoid
8187 text relocations. We can't do this for ifunc in
8188 allocate_dynrelocs, as we do for normal dynamic
8189 function symbols with plt entries, because we need
8190 to keep the original value around for the ifunc
8191 relocation. */
8192 sym->st_shndx = (_bfd_elf_section_from_bfd_section
8193 (output_bfd, htab->glink->output_section));
8194 sym->st_value = (ent->glink_offset +
8195 htab->glink->output_offset
8196 + htab->glink->output_section->vma);
8197 }
a6aa5195
AM
8198 doneone = TRUE;
8199 }
e1a9cb8e 8200
e054468f 8201 if (htab->plt_type == PLT_NEW
25f23106
AM
8202 || !htab->elf.dynamic_sections_created
8203 || h->dynindx == -1)
a6aa5195 8204 {
e054468f 8205 asection *splt = htab->plt;
25f23106
AM
8206 if (!htab->elf.dynamic_sections_created
8207 || h->dynindx == -1)
e054468f 8208 splt = htab->iplt;
e1a9cb8e 8209
e054468f 8210 write_glink_stub (ent, splt, info);
e1a9cb8e 8211
e054468f
AM
8212 if (!info->shared && !info->pie)
8213 /* We only need one non-PIC glink stub. */
8214 break;
a6aa5195
AM
8215 }
8216 else
8217 break;
8218 }
e1a9cb8e 8219
25dbc73a
AM
8220 if (h->needs_copy)
8221 {
8222 asection *s;
8223 Elf_Internal_Rela rela;
8224 bfd_byte *loc;
e1a9cb8e 8225
25dbc73a 8226 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 8227
25dbc73a
AM
8228#ifdef DEBUG
8229 fprintf (stderr, ", copy");
8230#endif
e1a9cb8e 8231
25dbc73a 8232 BFD_ASSERT (h->dynindx != -1);
86bbe32f 8233
4dc4a9a5 8234 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
8235 s = htab->relsbss;
8236 else
8237 s = htab->relbss;
8238 BFD_ASSERT (s != NULL);
e1a9cb8e 8239
e87d4038 8240 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
8241 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8242 rela.r_addend = 0;
8243 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8244 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8245 }
e1a9cb8e 8246
25dbc73a
AM
8247#ifdef DEBUG
8248 fprintf (stderr, "\n");
8249#endif
e1a9cb8e 8250
25dbc73a 8251 /* Mark some specially defined symbols as absolute. */
9d8504b1
PB
8252 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8253 || (!htab->is_vxworks
8254 && (h == htab->elf.hgot
8255 || strcmp (h->root.root.string,
8256 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
25dbc73a 8257 sym->st_shndx = SHN_ABS;
e1a9cb8e 8258
25dbc73a
AM
8259 return TRUE;
8260}
8261\f
8262static enum elf_reloc_type_class
8263ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 8264{
25dbc73a
AM
8265 switch (ELF32_R_TYPE (rela->r_info))
8266 {
8267 case R_PPC_RELATIVE:
8268 return reloc_class_relative;
8269 case R_PPC_REL24:
8270 case R_PPC_ADDR24:
8271 case R_PPC_JMP_SLOT:
8272 return reloc_class_plt;
8273 case R_PPC_COPY:
8274 return reloc_class_copy;
8275 default:
8276 return reloc_class_normal;
8277 }
e1a9cb8e 8278}
25dbc73a
AM
8279\f
8280/* Finish up the dynamic sections. */
e1a9cb8e 8281
25dbc73a
AM
8282static bfd_boolean
8283ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8284 struct bfd_link_info *info)
e1a9cb8e 8285{
25dbc73a 8286 asection *sdyn;
9d8504b1 8287 asection *splt;
25dbc73a 8288 struct ppc_elf_link_hash_table *htab;
1fe44d79 8289 bfd_vma got;
e87d4038
AM
8290 bfd *dynobj;
8291 bfd_boolean ret = TRUE;
e1a9cb8e 8292
25dbc73a
AM
8293#ifdef DEBUG
8294 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8295#endif
6b0817e5 8296
25dbc73a 8297 htab = ppc_elf_hash_table (info);
9d8504b1
PB
8298 dynobj = elf_hash_table (info)->dynobj;
8299 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8300 if (htab->is_vxworks)
8301 splt = bfd_get_section_by_name (dynobj, ".plt");
8302 else
8303 splt = NULL;
e1a9cb8e 8304
1fe44d79
AM
8305 got = 0;
8306 if (htab->elf.hgot != NULL)
e87d4038 8307 got = SYM_VAL (htab->elf.hgot);
1fe44d79 8308
25dbc73a 8309 if (htab->elf.dynamic_sections_created)
e1a9cb8e 8310 {
25dbc73a 8311 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 8312
25dbc73a 8313 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 8314
25dbc73a
AM
8315 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8316 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8317 for (; dyncon < dynconend; dyncon++)
8318 {
8319 Elf_Internal_Dyn dyn;
8320 asection *s;
e1a9cb8e 8321
9d8504b1 8322 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 8323
25dbc73a
AM
8324 switch (dyn.d_tag)
8325 {
8326 case DT_PLTGOT:
9d8504b1
PB
8327 if (htab->is_vxworks)
8328 s = htab->sgotplt;
8329 else
8330 s = htab->plt;
25dbc73a
AM
8331 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8332 break;
86bbe32f 8333
25dbc73a
AM
8334 case DT_PLTRELSZ:
8335 dyn.d_un.d_val = htab->relplt->size;
8336 break;
e1a9cb8e 8337
25dbc73a
AM
8338 case DT_JMPREL:
8339 s = htab->relplt;
8340 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8341 break;
2f89ff8d 8342
1fe44d79
AM
8343 case DT_PPC_GOT:
8344 dyn.d_un.d_ptr = got;
d7128ce4
AM
8345 break;
8346
9d8504b1
PB
8347 case DT_RELASZ:
8348 if (htab->is_vxworks)
8349 {
8350 if (htab->relplt)
8351 dyn.d_un.d_ptr -= htab->relplt->size;
8352 break;
8353 }
8354 continue;
8355
25dbc73a 8356 default:
7a2b07ff
NS
8357 if (htab->is_vxworks
8358 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8359 break;
25dbc73a
AM
8360 continue;
8361 }
4c45e5c9 8362
25dbc73a
AM
8363 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8364 }
8365 }
4c45e5c9 8366
3b36f7e6 8367 if (htab->got != NULL)
25dbc73a 8368 {
e79f5955
AM
8369 if (htab->elf.hgot->root.u.def.section == htab->got
8370 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
e87d4038 8371 {
e79f5955 8372 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 8373
e87d4038
AM
8374 p += htab->elf.hgot->root.u.def.value;
8375 if (htab->plt_type == PLT_OLD)
e79f5955
AM
8376 {
8377 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8378 so that a function can easily find the address of
8379 _GLOBAL_OFFSET_TABLE_. */
8380 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8381 < htab->elf.hgot->root.u.def.section->size);
8382 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8383 }
3b36f7e6 8384
e87d4038 8385 if (sdyn != NULL)
e79f5955
AM
8386 {
8387 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8388 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8389 < htab->elf.hgot->root.u.def.section->size);
8390 bfd_put_32 (output_bfd, val, p);
8391 }
e87d4038
AM
8392 }
8393 else
8394 {
8395 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
8396 htab->elf.hgot->root.root.string,
e79f5955
AM
8397 (htab->sgotplt != NULL
8398 ? htab->sgotplt->name : htab->got->name));
e87d4038
AM
8399 bfd_set_error (bfd_error_bad_value);
8400 ret = FALSE;
8401 }
25dbc73a
AM
8402
8403 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8404 }
8405
9d8504b1
PB
8406 /* Fill in the first entry in the VxWorks procedure linkage table. */
8407 if (splt && splt->size > 0)
8408 {
8409 /* Use the right PLT. */
8410 static const bfd_vma *plt_entry = NULL;
8411 plt_entry = info->shared ?
8412 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
8413
8414 if (!info->shared)
8415 {
e87d4038 8416 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 8417
e87d4038 8418 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 8419 splt->contents + 0);
e87d4038 8420 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
8421 splt->contents + 4);
8422 }
8423 else
8424 {
8425 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8426 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8427 }
8428 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8429 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8430 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8431 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8432 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8433 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8434
8435 if (! info->shared)
8436 {
8437 Elf_Internal_Rela rela;
8438 bfd_byte *loc;
8439
8440 loc = htab->srelplt2->contents;
8441
8442 /* Output the @ha relocation for the first instruction. */
8443 rela.r_offset = (htab->plt->output_section->vma
8444 + htab->plt->output_offset
8445 + 2);
636ce3f5 8446 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
8447 rela.r_addend = 0;
8448 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8449 loc += sizeof (Elf32_External_Rela);
8450
8451 /* Output the @l relocation for the second instruction. */
8452 rela.r_offset = (htab->plt->output_section->vma
8453 + htab->plt->output_offset
8454 + 6);
636ce3f5 8455 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
8456 rela.r_addend = 0;
8457 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8458 loc += sizeof (Elf32_External_Rela);
8459
8460 /* Fix up the remaining relocations. They may have the wrong
8461 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8462 in which symbols were output. */
8463 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8464 {
8465 Elf_Internal_Rela rel;
8466
8467 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 8468 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
8469 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8470 loc += sizeof (Elf32_External_Rela);
8471
8472 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 8473 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
8474 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8475 loc += sizeof (Elf32_External_Rela);
8476
8477 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 8478 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
8479 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8480 loc += sizeof (Elf32_External_Rela);
8481 }
8482 }
8483 }
8484
e054468f
AM
8485 if (htab->glink != NULL
8486 && htab->glink->contents != NULL
8487 && htab->elf.dynamic_sections_created)
d7128ce4
AM
8488 {
8489 unsigned char *p;
8490 unsigned char *endp;
a6aa5195 8491 bfd_vma res0;
d7128ce4 8492 unsigned int i;
a6aa5195
AM
8493
8494 /*
8495 * PIC glink code is the following:
8496 *
8497 * # ith PLT code stub.
8498 * addis 11,30,(plt+(i-1)*4-got)@ha
8499 * lwz 11,(plt+(i-1)*4-got)@l(11)
8500 * mtctr 11
8501 * bctr
8502 *
8503 * # A table of branches, one for each plt entry.
176a0d42 8504 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
8505 * # addresses, so (r11 - res_0) gives the plt index * 4.
8506 * res_0: b PLTresolve
8507 * res_1: b PLTresolve
8508 * .
8509 * # Some number of entries towards the end can be nops
8510 * res_n_m3: nop
8511 * res_n_m2: nop
8512 * res_n_m1:
8513 *
8514 * PLTresolve:
8515 * addis 11,11,(1f-res_0)@ha
8516 * mflr 0
8517 * bcl 20,31,1f
8518 * 1: addi 11,11,(1b-res_0)@l
8519 * mflr 12
8520 * mtlr 0
8521 * sub 11,11,12 # r11 = index * 4
8522 * addis 12,12,(got+4-1b)@ha
8523 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8524 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8525 * mtctr 0
8526 * add 0,11,11
8527 * add 11,0,11 # r11 = index * 12 = reloc offset.
8528 * bctr
8529 */
8530 static const unsigned int pic_plt_resolve[] =
8531 {
8532 ADDIS_11_11,
8533 MFLR_0,
8534 BCL_20_31,
8535 ADDI_11_11,
8536 MFLR_12,
8537 MTLR_0,
8538 SUB_11_11_12,
8539 ADDIS_12_12,
8540 LWZ_0_12,
8541 LWZ_12_12,
8542 MTCTR_0,
8543 ADD_0_11_11,
8544 ADD_11_0_11,
8545 BCTR,
8546 NOP,
8547 NOP
8548 };
8549
176a0d42
AM
8550 /*
8551 * Non-PIC glink code is a little simpler.
8552 *
8553 * # ith PLT code stub.
8554 * lis 11,(plt+(i-1)*4)@ha
8555 * lwz 11,(plt+(i-1)*4)@l(11)
8556 * mtctr 11
8557 * bctr
8558 *
8559 * The branch table is the same, then comes
8560 *
8561 * PLTresolve:
8562 * lis 12,(got+4)@ha
8563 * addis 11,11,(-res_0)@ha
8564 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8565 * addi 11,11,(-res_0)@l # r11 = index * 4
8566 * mtctr 0
8567 * add 0,11,11
8568 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8569 * add 11,0,11 # r11 = index * 12 = reloc offset.
8570 * bctr
8571 */
d7128ce4
AM
8572 static const unsigned int plt_resolve[] =
8573 {
a6aa5195
AM
8574 LIS_12,
8575 ADDIS_11_11,
8576 LWZ_0_12,
8577 ADDI_11_11,
d7128ce4 8578 MTCTR_0,
7e8aeb9a 8579 ADD_0_11_11,
a6aa5195 8580 LWZ_12_12,
7e8aeb9a 8581 ADD_11_0_11,
d7128ce4
AM
8582 BCTR,
8583 NOP,
8584 NOP,
a6aa5195
AM
8585 NOP,
8586 NOP,
8587 NOP,
8588 NOP,
d7128ce4
AM
8589 NOP
8590 };
8591
a6aa5195
AM
8592 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8593 abort ();
8594 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
8595 abort ();
8596
a6aa5195 8597 /* Build the branch table, one for each plt entry (less one),
86b9da88 8598 and perhaps some padding. */
a6aa5195
AM
8599 p = htab->glink->contents;
8600 p += htab->glink_pltresolve;
86b9da88
AM
8601 endp = htab->glink->contents;
8602 endp += htab->glink->size - GLINK_PLTRESOLVE;
8603 while (p < endp - 8 * 4)
8604 {
8605 bfd_put_32 (output_bfd, B + endp - p, p);
8606 p += 4;
8607 }
8608 while (p < endp)
8609 {
8610 bfd_put_32 (output_bfd, NOP, p);
8611 p += 4;
8612 }
8613
7e8aeb9a 8614 res0 = (htab->glink_pltresolve
86b9da88
AM
8615 + htab->glink->output_section->vma
8616 + htab->glink->output_offset);
8617
8618 /* Last comes the PLTresolve stub. */
7e8aeb9a
AM
8619 if (info->shared || info->pie)
8620 {
a6aa5195 8621 bfd_vma bcl;
d7128ce4 8622
a6aa5195 8623 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 8624 {
a6aa5195 8625 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7e8aeb9a
AM
8626 p += 4;
8627 }
a6aa5195
AM
8628 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8629
8630 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8631 + htab->glink->output_section->vma
8632 + htab->glink->output_offset);
8633
8634 bfd_put_32 (output_bfd,
8635 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8636 bfd_put_32 (output_bfd,
8637 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8638 bfd_put_32 (output_bfd,
8639 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8640 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8641 {
8642 bfd_put_32 (output_bfd,
8643 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8644 bfd_put_32 (output_bfd,
8645 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8646 }
8647 else
8648 {
8649 bfd_put_32 (output_bfd,
8650 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8651 bfd_put_32 (output_bfd,
8652 LWZ_12_12 + 4, p + 9*4);
8653 }
7e8aeb9a
AM
8654 }
8655 else
d7128ce4 8656 {
a6aa5195 8657 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a
AM
8658 {
8659 bfd_put_32 (output_bfd, plt_resolve[i], p);
8660 p += 4;
8661 }
a6aa5195
AM
8662 p -= 4 * ARRAY_SIZE (plt_resolve);
8663
8664 bfd_put_32 (output_bfd,
8665 LIS_12 + PPC_HA (got + 4), p + 0*4);
8666 bfd_put_32 (output_bfd,
8667 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8668 bfd_put_32 (output_bfd,
8669 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8670 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8671 {
8672 bfd_put_32 (output_bfd,
8673 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8674 bfd_put_32 (output_bfd,
8675 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8676 }
8677 else
8678 {
8679 bfd_put_32 (output_bfd,
8680 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8681 bfd_put_32 (output_bfd,
8682 LWZ_12_12 + 4, p + 6*4);
8683 }
d7128ce4 8684 }
d7128ce4
AM
8685 }
8686
e87d4038 8687 return ret;
25dbc73a 8688}
e1a9cb8e 8689\f
252b5132
RH
8690#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8691#define TARGET_LITTLE_NAME "elf32-powerpcle"
8692#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8693#define TARGET_BIG_NAME "elf32-powerpc"
8694#define ELF_ARCH bfd_arch_powerpc
8695#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
8696#ifdef __QNXTARGET__
8697#define ELF_MAXPAGESIZE 0x1000
8698#else
252b5132 8699#define ELF_MAXPAGESIZE 0x10000
d0facd1b 8700#endif
b1342370 8701#define ELF_MINPAGESIZE 0x1000
24718e3b 8702#define ELF_COMMONPAGESIZE 0x1000
252b5132
RH
8703#define elf_info_to_howto ppc_elf_info_to_howto
8704
8705#ifdef EM_CYGNUS_POWERPC
8706#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8707#endif
8708
8709#ifdef EM_PPC_OLD
8710#define ELF_MACHINE_ALT2 EM_PPC_OLD
8711#endif
8712
8713#define elf_backend_plt_not_loaded 1
252b5132 8714#define elf_backend_can_gc_sections 1
51b64d56 8715#define elf_backend_can_refcount 1
b491616a 8716#define elf_backend_rela_normal 1
252b5132 8717
43c40ab2 8718#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 8719#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 8720#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 8721#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
157090f7 8722#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 8723#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 8724#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 8725#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 8726
feee612b 8727#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
8728#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8729#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8730#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8731#define elf_backend_relocate_section ppc_elf_relocate_section
8732#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8733#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 8734#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
8735#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8736#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8737#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 8738#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
8739#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8740#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8741#define elf_backend_fake_sections ppc_elf_fake_sections
8742#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
c5fccbec
DJ
8743#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8744#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 8745#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 8746#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
8747#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8748#define elf_backend_final_write_processing ppc_elf_final_write_processing
8749#define elf_backend_write_section ppc_elf_write_section
551b43fd 8750#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 8751#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 8752#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 8753#define elf_backend_init_index_section _bfd_elf_init_1_index_section
e054468f 8754#define elf_backend_post_process_headers _bfd_elf_set_osabi
252b5132
RH
8755
8756#include "elf32-target.h"
9d8504b1
PB
8757
8758/* VxWorks Target */
8759
8760#undef TARGET_LITTLE_SYM
8761#undef TARGET_LITTLE_NAME
8762
8763#undef TARGET_BIG_SYM
8764#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8765#undef TARGET_BIG_NAME
8766#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8767
d5e3d971
PB
8768/* VxWorks uses the elf default section flags for .plt. */
8769static const struct bfd_elf_special_section *
8770ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 8771{
d5e3d971
PB
8772 if (sec->name == NULL)
8773 return NULL;
8774
8775 if (strcmp (sec->name, ".plt") == 0)
8776 return _bfd_elf_get_sec_type_attr (abfd, sec);
8777
8778 return ppc_elf_get_sec_type_attr (abfd, sec);
8779}
9d8504b1
PB
8780
8781/* Like ppc_elf_link_hash_table_create, but overrides
8782 appropriately for VxWorks. */
8783static struct bfd_link_hash_table *
8784ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8785{
8786 struct bfd_link_hash_table *ret;
8787
8788 ret = ppc_elf_link_hash_table_create (abfd);
8789 if (ret)
8790 {
8791 struct ppc_elf_link_hash_table *htab
8792 = (struct ppc_elf_link_hash_table *)ret;
8793 htab->is_vxworks = 1;
4a3dc543 8794 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
8795 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8796 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8797 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8798 }
8799 return ret;
8800}
8801
8802/* Tweak magic VxWorks symbols as they are loaded. */
8803static bfd_boolean
8804ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8805 struct bfd_link_info *info,
8806 Elf_Internal_Sym *sym,
8807 const char **namep ATTRIBUTE_UNUSED,
8808 flagword *flagsp ATTRIBUTE_UNUSED,
8809 asection **secp,
8810 bfd_vma *valp)
8811{
8812 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8813 valp))
8814 return FALSE;
8815
8816 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8817}
8818
9d8504b1
PB
8819static void
8820ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8821{
8822 ppc_elf_final_write_processing(abfd, linker);
8823 elf_vxworks_final_write_processing(abfd, linker);
8824}
8825
8826/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8827 define it. */
8828#undef elf_backend_want_plt_sym
8829#define elf_backend_want_plt_sym 1
8830#undef elf_backend_want_got_plt
8831#define elf_backend_want_got_plt 1
8832#undef elf_backend_got_symbol_offset
8833#define elf_backend_got_symbol_offset 0
8834#undef elf_backend_plt_not_loaded
8835#define elf_backend_plt_not_loaded 0
8836#undef elf_backend_plt_readonly
8837#define elf_backend_plt_readonly 1
8838#undef elf_backend_got_header_size
8839#define elf_backend_got_header_size 12
8840
468392fb
AM
8841#undef bfd_elf32_get_synthetic_symtab
8842
9d8504b1
PB
8843#undef bfd_elf32_bfd_link_hash_table_create
8844#define bfd_elf32_bfd_link_hash_table_create \
8845 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
8846#undef elf_backend_add_symbol_hook
8847#define elf_backend_add_symbol_hook \
8848 ppc_elf_vxworks_add_symbol_hook
8849#undef elf_backend_link_output_symbol_hook
8850#define elf_backend_link_output_symbol_hook \
9c72ff84 8851 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
8852#undef elf_backend_final_write_processing
8853#define elf_backend_final_write_processing \
8854 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
8855#undef elf_backend_get_sec_type_attr
8856#define elf_backend_get_sec_type_attr \
8857 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
8858#undef elf_backend_emit_relocs
8859#define elf_backend_emit_relocs \
8860 elf_vxworks_emit_relocs
8861
8862#undef elf32_bed
8863#define elf32_bed ppc_elf_vxworks_bed
e054468f 8864#undef elf_backend_post_process_headers
9d8504b1
PB
8865
8866#include "elf32-target.h"
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