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[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
CommitLineData
252b5132 1/* PowerPC-specific support for 32-bit ELF
051d5130 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
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;
25f23106 3461 if (!htab->is_vxworks)
e054468f 3462 {
e054468f
AM
3463 if (h != NULL)
3464 {
3465 if (h->type == STT_GNU_IFUNC)
3466 {
3467 h->needs_plt = 1;
3468 ifunc = &h->plt.plist;
3469 }
3470 }
3471 else
3472 {
3473 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3474 abfd, r_symndx);
3475 if (isym == NULL)
3476 return FALSE;
3477
3478 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3479 {
3480 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3481 PLT_IFUNC);
3482 if (ifunc == NULL)
3483 return FALSE;
3484 }
3485 }
25f23106
AM
3486 }
3487
3488 r_type = ELF32_R_TYPE (rel->r_info);
3489 if (!htab->is_vxworks && is_branch_reloc (r_type))
3490 {
3491 if (h != NULL && h == tga)
3492 {
3493 if (rel != relocs
3494 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3495 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3496 /* We have a new-style __tls_get_addr call with a marker
3497 reloc. */
3498 ;
3499 else
3500 /* Mark this section as having an old-style call. */
3501 sec->has_tls_get_addr_call = 1;
3502 }
3503
3504 /* STT_GNU_IFUNC symbols must have a PLT entry. */
e054468f
AM
3505 if (ifunc != NULL)
3506 {
3507 bfd_vma addend = 0;
3508
3509 if (r_type == R_PPC_PLTREL24)
3510 {
3511 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3512 addend = rel->r_addend;
3513 }
3514 if (!update_plt_info (abfd, ifunc,
3515 addend < 32768 ? NULL : got2, addend))
3516 return FALSE;
e054468f
AM
3517 }
3518 }
727fc41e 3519
25dbc73a
AM
3520 switch (r_type)
3521 {
727fc41e
AM
3522 case R_PPC_TLSGD:
3523 case R_PPC_TLSLD:
3524 /* These special tls relocs tie a call to __tls_get_addr with
3525 its parameter symbol. */
3526 break;
3527
25dbc73a
AM
3528 case R_PPC_GOT_TLSLD16:
3529 case R_PPC_GOT_TLSLD16_LO:
3530 case R_PPC_GOT_TLSLD16_HI:
3531 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
3532 tls_type = TLS_TLS | TLS_LD;
3533 goto dogottls;
252b5132 3534
25dbc73a
AM
3535 case R_PPC_GOT_TLSGD16:
3536 case R_PPC_GOT_TLSGD16_LO:
3537 case R_PPC_GOT_TLSGD16_HI:
3538 case R_PPC_GOT_TLSGD16_HA:
3539 tls_type = TLS_TLS | TLS_GD;
3540 goto dogottls;
3541
3542 case R_PPC_GOT_TPREL16:
3543 case R_PPC_GOT_TPREL16_LO:
3544 case R_PPC_GOT_TPREL16_HI:
3545 case R_PPC_GOT_TPREL16_HA:
1d483afe 3546 if (!info->executable)
25dbc73a
AM
3547 info->flags |= DF_STATIC_TLS;
3548 tls_type = TLS_TLS | TLS_TPREL;
3549 goto dogottls;
3550
3551 case R_PPC_GOT_DTPREL16:
3552 case R_PPC_GOT_DTPREL16_LO:
3553 case R_PPC_GOT_DTPREL16_HI:
3554 case R_PPC_GOT_DTPREL16_HA:
3555 tls_type = TLS_TLS | TLS_DTPREL;
3556 dogottls:
3557 sec->has_tls_reloc = 1;
3558 /* Fall thru */
252b5132 3559
25dbc73a
AM
3560 /* GOT16 relocations */
3561 case R_PPC_GOT16:
3562 case R_PPC_GOT16_LO:
3563 case R_PPC_GOT16_HI:
3564 case R_PPC_GOT16_HA:
3565 /* This symbol requires a global offset table entry. */
3566 if (htab->got == NULL)
3567 {
3568 if (htab->elf.dynobj == NULL)
3569 htab->elf.dynobj = abfd;
3570 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3571 return FALSE;
3572 }
3573 if (h != NULL)
3574 {
3575 h->got.refcount += 1;
3576 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3577 }
3578 else
3579 /* This is a global offset table entry for a local symbol. */
3580 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3581 return FALSE;
3582 break;
252b5132 3583
25dbc73a
AM
3584 /* Indirect .sdata relocation. */
3585 case R_PPC_EMB_SDAI16:
3586 if (info->shared)
3587 {
3588 bad_shared_reloc (abfd, r_type);
3589 return FALSE;
3590 }
c9a2f333
AM
3591 if (htab->sdata[0].section == NULL
3592 && !ppc_elf_create_linker_section (abfd, info, 0,
3593 &htab->sdata[0]))
3594 return FALSE;
76750a2f
AM
3595 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3596 h, rel))
25dbc73a 3597 return FALSE;
046183de
AM
3598 if (h != NULL)
3599 {
3600 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3601 h->non_got_ref = TRUE;
3602 }
25dbc73a 3603 break;
252b5132 3604
25dbc73a
AM
3605 /* Indirect .sdata2 relocation. */
3606 case R_PPC_EMB_SDA2I16:
3607 if (info->shared)
3608 {
3609 bad_shared_reloc (abfd, r_type);
3610 return FALSE;
3611 }
c9a2f333
AM
3612 if (htab->sdata[1].section == NULL
3613 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3614 &htab->sdata[1]))
3615 return FALSE;
76750a2f
AM
3616 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3617 h, rel))
25dbc73a 3618 return FALSE;
046183de
AM
3619 if (h != NULL)
3620 {
3621 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3622 h->non_got_ref = TRUE;
3623 }
25dbc73a 3624 break;
252b5132 3625
25dbc73a 3626 case R_PPC_SDAREL16:
046183de
AM
3627 if (info->shared)
3628 {
3629 bad_shared_reloc (abfd, r_type);
3630 return FALSE;
3631 }
3632 if (htab->sdata[0].sym == NULL
3633 && !create_sdata_sym (htab, &htab->sdata[0]))
3634 return FALSE;
3635 if (h != NULL)
3636 {
3637 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3638 h->non_got_ref = TRUE;
3639 }
3640 break;
3641
25dbc73a 3642 case R_PPC_EMB_SDA2REL:
046183de
AM
3643 if (info->shared)
3644 {
3645 bad_shared_reloc (abfd, r_type);
3646 return FALSE;
3647 }
3648 if (htab->sdata[1].sym == NULL
3649 && !create_sdata_sym (htab, &htab->sdata[1]))
3650 return FALSE;
3651 if (h != NULL)
3652 {
3653 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3654 h->non_got_ref = TRUE;
3655 }
3656 break;
3657
25dbc73a
AM
3658 case R_PPC_EMB_SDA21:
3659 case R_PPC_EMB_RELSDA:
046183de
AM
3660 if (info->shared)
3661 {
3662 bad_shared_reloc (abfd, r_type);
3663 return FALSE;
3664 }
3665 if (htab->sdata[0].sym == NULL
3666 && !create_sdata_sym (htab, &htab->sdata[0]))
3667 return FALSE;
3668 if (htab->sdata[1].sym == NULL
3669 && !create_sdata_sym (htab, &htab->sdata[1]))
3670 return FALSE;
3671 if (h != NULL)
3672 {
3673 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3674 h->non_got_ref = TRUE;
3675 }
3676 break;
3677
25dbc73a
AM
3678 case R_PPC_EMB_NADDR32:
3679 case R_PPC_EMB_NADDR16:
3680 case R_PPC_EMB_NADDR16_LO:
3681 case R_PPC_EMB_NADDR16_HI:
3682 case R_PPC_EMB_NADDR16_HA:
3683 if (info->shared)
3684 {
3685 bad_shared_reloc (abfd, r_type);
3686 return FALSE;
3687 }
4dc4a9a5 3688 if (h != NULL)
046183de 3689 h->non_got_ref = TRUE;
25dbc73a 3690 break;
252b5132 3691
25dbc73a 3692 case R_PPC_PLTREL24:
e054468f 3693 if (h == NULL || ifunc != NULL)
6d78d0b9
AM
3694 break;
3695 /* Fall through */
3696 case R_PPC_PLT32:
25dbc73a
AM
3697 case R_PPC_PLTREL32:
3698 case R_PPC_PLT16_LO:
3699 case R_PPC_PLT16_HI:
3700 case R_PPC_PLT16_HA:
3701#ifdef DEBUG
3702 fprintf (stderr, "Reloc requires a PLT entry\n");
3703#endif
3704 /* This symbol requires a procedure linkage table entry. We
3705 actually build the entry in finish_dynamic_symbol,
3706 because this might be a case of linking PIC code without
3707 linking in any dynamic objects, in which case we don't
3708 need to generate a procedure linkage table after all. */
7619e7c7 3709
25dbc73a
AM
3710 if (h == NULL)
3711 {
3712 /* It does not make sense to have a procedure linkage
3713 table entry for a local symbol. */
3714 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3715 "local symbol"),
3716 abfd,
3717 sec,
3718 (long) rel->r_offset,
3719 ppc_elf_howto_table[r_type]->name);
3720 bfd_set_error (bfd_error_bad_value);
3721 return FALSE;
3722 }
a6aa5195
AM
3723 else
3724 {
016687f8 3725 bfd_vma addend = 0;
ee05f2fe 3726
016687f8
AM
3727 if (r_type == R_PPC_PLTREL24)
3728 {
3729 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3730 addend = rel->r_addend;
3731 }
a6aa5195 3732 h->needs_plt = 1;
3ec01793
AM
3733 if (!update_plt_info (abfd, &h->plt.plist,
3734 addend < 32768 ? NULL : got2, addend))
a6aa5195
AM
3735 return FALSE;
3736 }
25dbc73a 3737 break;
ee05f2fe 3738
25dbc73a
AM
3739 /* The following relocations don't need to propagate the
3740 relocation if linking a shared object since they are
3741 section relative. */
3742 case R_PPC_SECTOFF:
3743 case R_PPC_SECTOFF_LO:
3744 case R_PPC_SECTOFF_HI:
3745 case R_PPC_SECTOFF_HA:
3746 case R_PPC_DTPREL16:
3747 case R_PPC_DTPREL16_LO:
3748 case R_PPC_DTPREL16_HI:
3749 case R_PPC_DTPREL16_HA:
3750 case R_PPC_TOC16:
3751 break;
252b5132 3752
d7128ce4
AM
3753 case R_PPC_REL16:
3754 case R_PPC_REL16_LO:
3755 case R_PPC_REL16_HI:
3756 case R_PPC_REL16_HA:
016687f8 3757 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
3758 break;
3759
a6aa5195 3760 /* These are just markers. */
25dbc73a
AM
3761 case R_PPC_TLS:
3762 case R_PPC_EMB_MRKREF:
3763 case R_PPC_NONE:
3764 case R_PPC_max:
ceaf50a2
AM
3765 case R_PPC_RELAX32:
3766 case R_PPC_RELAX32PC:
3767 case R_PPC_RELAX32_PLT:
3768 case R_PPC_RELAX32PC_PLT:
25dbc73a 3769 break;
252b5132 3770
25dbc73a
AM
3771 /* These should only appear in dynamic objects. */
3772 case R_PPC_COPY:
3773 case R_PPC_GLOB_DAT:
3774 case R_PPC_JMP_SLOT:
3775 case R_PPC_RELATIVE:
e054468f 3776 case R_PPC_IRELATIVE:
25dbc73a 3777 break;
252b5132 3778
25dbc73a
AM
3779 /* These aren't handled yet. We'll report an error later. */
3780 case R_PPC_ADDR30:
3781 case R_PPC_EMB_RELSEC16:
3782 case R_PPC_EMB_RELST_LO:
3783 case R_PPC_EMB_RELST_HI:
3784 case R_PPC_EMB_RELST_HA:
3785 case R_PPC_EMB_BIT_FLD:
3786 break;
252b5132 3787
25dbc73a
AM
3788 /* This refers only to functions defined in the shared library. */
3789 case R_PPC_LOCAL24PC:
727fc41e 3790 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
3791 {
3792 htab->plt_type = PLT_OLD;
3793 htab->old_bfd = abfd;
3794 }
25dbc73a 3795 break;
252b5132 3796
25dbc73a
AM
3797 /* This relocation describes the C++ object vtable hierarchy.
3798 Reconstruct it for later use during GC. */
3799 case R_PPC_GNU_VTINHERIT:
3800 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3801 return FALSE;
3802 break;
252b5132 3803
25dbc73a
AM
3804 /* This relocation describes which C++ vtable entries are actually
3805 used. Record for later use during GC. */
3806 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
3807 BFD_ASSERT (h != NULL);
3808 if (h != NULL
3809 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
3810 return FALSE;
3811 break;
252b5132 3812
25dbc73a
AM
3813 /* We shouldn't really be seeing these. */
3814 case R_PPC_TPREL32:
1d483afe
AM
3815 case R_PPC_TPREL16:
3816 case R_PPC_TPREL16_LO:
3817 case R_PPC_TPREL16_HI:
3818 case R_PPC_TPREL16_HA:
3819 if (!info->executable)
25dbc73a
AM
3820 info->flags |= DF_STATIC_TLS;
3821 goto dodyn;
252b5132 3822
25dbc73a
AM
3823 /* Nor these. */
3824 case R_PPC_DTPMOD32:
3825 case R_PPC_DTPREL32:
3826 goto dodyn;
252b5132 3827
9edfd1af
AM
3828 case R_PPC_REL32:
3829 if (h == NULL
3830 && got2 != NULL
3831 && (sec->flags & SEC_CODE) != 0
3832 && (info->shared || info->pie)
4a3dc543 3833 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
3834 {
3835 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3836 the start of a function, which assembles to a REL32
3837 reference to .got2. If we detect one of these, then
3838 force the old PLT layout because the linker cannot
3839 reliably deduce the GOT pointer value needed for
3840 PLT call stubs. */
3841 asection *s;
87d72d41 3842 Elf_Internal_Sym *isym;
9edfd1af 3843
87d72d41
AM
3844 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3845 abfd, r_symndx);
3846 if (isym == NULL)
3847 return FALSE;
3848
3849 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
9edfd1af 3850 if (s == got2)
016687f8
AM
3851 {
3852 htab->plt_type = PLT_OLD;
3853 htab->old_bfd = abfd;
3854 }
9edfd1af 3855 }
7123df0e 3856 if (h == NULL || h == htab->elf.hgot)
fd38b44c 3857 break;
625af618
AM
3858 /* fall through */
3859
3860 case R_PPC_ADDR32:
3861 case R_PPC_ADDR16:
3862 case R_PPC_ADDR16_LO:
3863 case R_PPC_ADDR16_HI:
3864 case R_PPC_ADDR16_HA:
3865 case R_PPC_UADDR32:
3866 case R_PPC_UADDR16:
3867 if (h != NULL && !info->shared)
3868 {
3869 /* We may need a plt entry if the symbol turns out to be
3870 a function defined in a dynamic object. */
3ec01793 3871 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
625af618
AM
3872 return FALSE;
3873
3874 /* We may need a copy reloc too. */
3875 h->non_got_ref = 1;
3876 h->pointer_equality_needed = 1;
3877 }
3878 goto dodyn;
9edfd1af 3879
25dbc73a
AM
3880 case R_PPC_REL24:
3881 case R_PPC_REL14:
3882 case R_PPC_REL14_BRTAKEN:
3883 case R_PPC_REL14_BRNTAKEN:
d7128ce4 3884 if (h == NULL)
25dbc73a 3885 break;
7123df0e 3886 if (h == htab->elf.hgot)
d7128ce4 3887 {
7123df0e 3888 if (htab->plt_type == PLT_UNSET)
016687f8
AM
3889 {
3890 htab->plt_type = PLT_OLD;
3891 htab->old_bfd = abfd;
3892 }
d7128ce4
AM
3893 break;
3894 }
25dbc73a 3895 /* fall through */
ee05f2fe 3896
25dbc73a 3897 case R_PPC_ADDR24:
25dbc73a
AM
3898 case R_PPC_ADDR14:
3899 case R_PPC_ADDR14_BRTAKEN:
3900 case R_PPC_ADDR14_BRNTAKEN:
25dbc73a
AM
3901 if (h != NULL && !info->shared)
3902 {
3903 /* We may need a plt entry if the symbol turns out to be
3904 a function defined in a dynamic object. */
e054468f
AM
3905 h->needs_plt = 1;
3906 if (ifunc == NULL
3907 && !update_plt_info (abfd, &h->plt.plist, NULL, 0))
a6aa5195 3908 return FALSE;
625af618 3909 break;
25dbc73a 3910 }
7619e7c7 3911
25dbc73a
AM
3912 dodyn:
3913 /* If we are creating a shared library, and this is a reloc
3914 against a global symbol, or a non PC relative reloc
3915 against a local symbol, then we need to copy the reloc
3916 into the shared library. However, if we are linking with
3917 -Bsymbolic, we do not need to copy a reloc against a
3918 global symbol which is defined in an object we are
3919 including in the link (i.e., DEF_REGULAR is set). At
3920 this point we have not seen all the input files, so it is
3921 possible that DEF_REGULAR is not set now but will be set
3922 later (it is never cleared). In case of a weak definition,
3923 DEF_REGULAR may be cleared later by a strong definition in
3924 a shared library. We account for that possibility below by
3925 storing information in the dyn_relocs field of the hash
3926 table entry. A similar situation occurs when creating
3927 shared libraries and symbol visibility changes render the
3928 symbol local.
7619e7c7 3929
25dbc73a
AM
3930 If on the other hand, we are creating an executable, we
3931 may need to keep relocations for symbols satisfied by a
3932 dynamic library if we manage to avoid copy relocs for the
3933 symbol. */
3934 if ((info->shared
1d483afe 3935 && (must_be_dyn_reloc (info, r_type)
25dbc73a
AM
3936 || (h != NULL
3937 && (! info->symbolic
3938 || h->root.type == bfd_link_hash_defweak
3939 || !h->def_regular))))
3940 || (ELIMINATE_COPY_RELOCS
3941 && !info->shared
25dbc73a
AM
3942 && h != NULL
3943 && (h->root.type == bfd_link_hash_defweak
25f23106
AM
3944 || !h->def_regular))
3945 || (!info->shared
3946 && ifunc != NULL))
25dbc73a
AM
3947 {
3948 struct ppc_elf_dyn_relocs *p;
3949 struct ppc_elf_dyn_relocs **head;
7619e7c7 3950
25dbc73a
AM
3951#ifdef DEBUG
3952 fprintf (stderr,
3953 "ppc_elf_check_relocs needs to "
3954 "create relocation for %s\n",
3955 (h && h->root.root.string
3956 ? h->root.root.string : "<unknown>"));
3957#endif
3958 if (sreloc == NULL)
3959 {
c9a2f333
AM
3960 if (htab->elf.dynobj == NULL)
3961 htab->elf.dynobj = abfd;
83bac4b0
NC
3962
3963 sreloc = _bfd_elf_make_dynamic_reloc_section
3964 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3965
25dbc73a 3966 if (sreloc == NULL)
83bac4b0 3967 return FALSE;
25dbc73a 3968 }
7619e7c7 3969
25dbc73a
AM
3970 /* If this is a global symbol, we count the number of
3971 relocations we need for this symbol. */
3972 if (h != NULL)
3973 {
3974 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3975 }
3976 else
3977 {
3978 /* Track dynamic relocs needed for local syms too.
3979 We really need local syms available to do this
3980 easily. Oh well. */
25dbc73a 3981 asection *s;
6edfbbad 3982 void *vpp;
87d72d41 3983 Elf_Internal_Sym *isym;
6edfbbad 3984
87d72d41
AM
3985 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3986 abfd, r_symndx);
3987 if (isym == NULL)
25dbc73a 3988 return FALSE;
7fce784e 3989
87d72d41
AM
3990 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3991 if (s == NULL)
3992 s = sec;
3993
6edfbbad
DJ
3994 vpp = &elf_section_data (s)->local_dynrel;
3995 head = (struct ppc_elf_dyn_relocs **) vpp;
25dbc73a 3996 }
7fce784e 3997
25dbc73a
AM
3998 p = *head;
3999 if (p == NULL || p->sec != sec)
4000 {
4001 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4002 if (p == NULL)
4003 return FALSE;
4004 p->next = *head;
4005 *head = p;
4006 p->sec = sec;
4007 p->count = 0;
4008 p->pc_count = 0;
4009 }
4010
4011 p->count += 1;
1d483afe 4012 if (!must_be_dyn_reloc (info, r_type))
25dbc73a 4013 p->pc_count += 1;
7619e7c7 4014 }
25dbc73a
AM
4015
4016 break;
7619e7c7
AM
4017 }
4018 }
ee05f2fe 4019
25dbc73a
AM
4020 return TRUE;
4021}
4022\f
34c8bcba
JM
4023
4024/* Merge object attributes from IBFD into OBFD. Raise an error if
4025 there are conflicting attributes. */
4026static bfd_boolean
4027ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4028{
c6e65352
DJ
4029 obj_attribute *in_attr, *in_attrs;
4030 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM
4031
4032 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4033 {
4034 /* This is the first object. Copy the attributes. */
4035 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4036
4037 /* Use the Tag_null value to indicate the attributes have been
4038 initialized. */
4039 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4040
4041 return TRUE;
4042 }
4043
c6e65352
DJ
4044 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4045 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4046
34c8bcba
JM
4047 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4048 non-conflicting ones. */
c6e65352
DJ
4049 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4050 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4051 if (in_attr->i != out_attr->i)
34c8bcba 4052 {
c6e65352
DJ
4053 out_attr->type = 1;
4054 if (out_attr->i == 0)
4055 out_attr->i = in_attr->i;
4056 else if (in_attr->i == 0)
34c8bcba 4057 ;
c6e65352 4058 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM
4059 _bfd_error_handler
4060 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3c7b9897
AM
4061 else if (out_attr->i == 1 && in_attr->i == 3)
4062 _bfd_error_handler
4063 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4064 obfd, ibfd);
4065 else if (out_attr->i == 3 && in_attr->i == 1)
4066 _bfd_error_handler
4067 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4068 ibfd, obfd);
4069 else if (out_attr->i == 3 && in_attr->i == 2)
4070 _bfd_error_handler
4071 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4072 ibfd, obfd);
4073 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
34c8bcba
JM
4074 _bfd_error_handler
4075 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3c7b9897 4076 else if (in_attr->i > 3)
34c8bcba
JM
4077 _bfd_error_handler
4078 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 4079 in_attr->i);
34c8bcba
JM
4080 else
4081 _bfd_error_handler
4082 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ
4083 out_attr->i);
4084 }
4085
4086 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4087 merge non-conflicting ones. */
4088 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4089 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4090 if (in_attr->i != out_attr->i)
4091 {
4092 const char *in_abi = NULL, *out_abi = NULL;
4093
4094 switch (in_attr->i)
4095 {
4096 case 1: in_abi = "generic"; break;
4097 case 2: in_abi = "AltiVec"; break;
4098 case 3: in_abi = "SPE"; break;
4099 }
4100
4101 switch (out_attr->i)
4102 {
4103 case 1: out_abi = "generic"; break;
4104 case 2: out_abi = "AltiVec"; break;
4105 case 3: out_abi = "SPE"; break;
4106 }
4107
4108 out_attr->type = 1;
4109 if (out_attr->i == 0)
4110 out_attr->i = in_attr->i;
4111 else if (in_attr->i == 0)
4112 ;
4113 /* For now, allow generic to transition to AltiVec or SPE
4114 without a warning. If GCC marked files with their stack
4115 alignment and used don't-care markings for files which are
4116 not affected by the vector ABI, we could warn about this
4117 case too. */
4118 else if (out_attr->i == 1)
4119 out_attr->i = in_attr->i;
4120 else if (in_attr->i == 1)
4121 ;
4122 else if (in_abi == NULL)
4123 _bfd_error_handler
4124 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4125 in_attr->i);
4126 else if (out_abi == NULL)
4127 _bfd_error_handler
4128 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4129 in_attr->i);
4130 else
4131 _bfd_error_handler
4132 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4133 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM
4134 }
4135
f82e0623
NF
4136 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4137 and merge non-conflicting ones. */
4138 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4139 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4140 if (in_attr->i != out_attr->i)
4141 {
4142 out_attr->type = 1;
4143 if (out_attr->i == 0)
4144 out_attr->i = in_attr->i;
4145 else if (in_attr->i == 0)
4146 ;
4147 else if (out_attr->i == 1 && in_attr->i == 2)
4148 _bfd_error_handler
4149 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4150 else if (out_attr->i == 2 && in_attr->i == 1)
4151 _bfd_error_handler
4152 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4153 else if (in_attr->i > 2)
4154 _bfd_error_handler
4155 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4156 in_attr->i);
4157 else
4158 _bfd_error_handler
4159 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4160 out_attr->i);
4161 }
4162
34c8bcba
JM
4163 /* Merge Tag_compatibility attributes and any common GNU ones. */
4164 _bfd_elf_merge_object_attributes (ibfd, obfd);
4165
4166 return TRUE;
4167}
4168
8853c3d3
AM
4169/* Merge backend specific data from an object file to the output
4170 object file when linking. */
4171
4172static bfd_boolean
4173ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4174{
4175 flagword old_flags;
4176 flagword new_flags;
4177 bfd_boolean error;
4178
0c8d6e5c 4179 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4180 return TRUE;
4181
4182 /* Check if we have the same endianess. */
4183 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4184 return FALSE;
4185
34c8bcba
JM
4186 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4187 return FALSE;
4188
8853c3d3
AM
4189 new_flags = elf_elfheader (ibfd)->e_flags;
4190 old_flags = elf_elfheader (obfd)->e_flags;
4191 if (!elf_flags_init (obfd))
4192 {
4193 /* First call, no flags set. */
4194 elf_flags_init (obfd) = TRUE;
4195 elf_elfheader (obfd)->e_flags = new_flags;
4196 }
4197
4198 /* Compatible flags are ok. */
4199 else if (new_flags == old_flags)
4200 ;
4201
4202 /* Incompatible flags. */
4203 else
4204 {
4205 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4206 to be linked with either. */
4207 error = FALSE;
4208 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4209 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4210 {
4211 error = TRUE;
4212 (*_bfd_error_handler)
4213 (_("%B: compiled with -mrelocatable and linked with "
4214 "modules compiled normally"), ibfd);
4215 }
4216 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4217 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4218 {
4219 error = TRUE;
4220 (*_bfd_error_handler)
4221 (_("%B: compiled normally and linked with "
4222 "modules compiled with -mrelocatable"), ibfd);
4223 }
4224
4225 /* The output is -mrelocatable-lib iff both the input files are. */
4226 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4227 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4228
4229 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4230 but each input file is either -mrelocatable or -mrelocatable-lib. */
4231 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4232 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4233 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4234 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4235
4236 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4237 any module uses it. */
4238 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4239
4240 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4241 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4242
4243 /* Warn about any other mismatches. */
4244 if (new_flags != old_flags)
4245 {
4246 error = TRUE;
4247 (*_bfd_error_handler)
4248 (_("%B: uses different e_flags (0x%lx) fields "
4249 "than previous modules (0x%lx)"),
4250 ibfd, (long) new_flags, (long) old_flags);
4251 }
4252
4253 if (error)
4254 {
4255 bfd_set_error (bfd_error_bad_value);
4256 return FALSE;
4257 }
4258 }
4259
4260 return TRUE;
4261}
4262\f
d7128ce4
AM
4263/* Choose which PLT scheme to use, and set .plt flags appropriately.
4264 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4265int
4266ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4267 struct bfd_link_info *info,
016687f8 4268 enum ppc_elf_plt_type plt_style,
0ba07910 4269 int emit_stub_syms)
d7128ce4
AM
4270{
4271 struct ppc_elf_link_hash_table *htab;
9d8504b1 4272 flagword flags;
d7128ce4
AM
4273
4274 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4275
4276 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4277 {
4278 if (plt_style == PLT_OLD)
4279 htab->plt_type = PLT_OLD;
4280 else
4281 {
4282 bfd *ibfd;
4283 enum ppc_elf_plt_type plt_type = plt_style;
4284
4285 /* Look through the reloc flags left by ppc_elf_check_relocs.
4286 Use the old style bss plt if a file makes plt calls
4287 without using the new relocs, and if ld isn't given
4288 --secure-plt and we never see REL16 relocs. */
4289 if (plt_type == PLT_UNSET)
4290 plt_type = PLT_OLD;
60b31e8d 4291 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
0c8d6e5c 4292 if (is_ppc_elf (ibfd))
016687f8
AM
4293 {
4294 if (ppc_elf_tdata (ibfd)->has_rel16)
4295 plt_type = PLT_NEW;
4296 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4297 {
4298 plt_type = PLT_OLD;
4299 htab->old_bfd = ibfd;
4300 break;
4301 }
4302 }
4303 htab->plt_type = plt_type;
4304 }
4305 }
4306 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4307 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
d7128ce4 4308
0ba07910
AM
4309 htab->emit_stub_syms = emit_stub_syms;
4310
4a3dc543 4311 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4312
4a3dc543 4313 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
4314 {
4315 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4316 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
4317
4318 /* The new PLT is a loaded section. */
4319 if (htab->plt != NULL
4320 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4321 return -1;
4322
4323 /* The new GOT is not executable. */
4324 if (htab->got != NULL
4325 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4326 return -1;
d7128ce4
AM
4327 }
4328 else
4329 {
4330 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
4331 if (htab->glink != NULL
4332 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4333 return -1;
d7128ce4 4334 }
4a3dc543 4335 return htab->plt_type == PLT_NEW;
d7128ce4
AM
4336}
4337\f
25dbc73a
AM
4338/* Return the section that should be marked against GC for a given
4339 relocation. */
586119b3 4340
25dbc73a
AM
4341static asection *
4342ppc_elf_gc_mark_hook (asection *sec,
07adf181 4343 struct bfd_link_info *info,
25dbc73a
AM
4344 Elf_Internal_Rela *rel,
4345 struct elf_link_hash_entry *h,
4346 Elf_Internal_Sym *sym)
4347{
4348 if (h != NULL)
07adf181
AM
4349 switch (ELF32_R_TYPE (rel->r_info))
4350 {
4351 case R_PPC_GNU_VTINHERIT:
4352 case R_PPC_GNU_VTENTRY:
4353 return NULL;
4354 }
4355
4356 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 4357}
a876ecf9 4358
25dbc73a
AM
4359/* Update the got, plt and dynamic reloc reference counts for the
4360 section being removed. */
4361
4362static bfd_boolean
4363ppc_elf_gc_sweep_hook (bfd *abfd,
4364 struct bfd_link_info *info,
4365 asection *sec,
4366 const Elf_Internal_Rela *relocs)
4367{
4368 struct ppc_elf_link_hash_table *htab;
4369 Elf_Internal_Shdr *symtab_hdr;
4370 struct elf_link_hash_entry **sym_hashes;
4371 bfd_signed_vma *local_got_refcounts;
4372 const Elf_Internal_Rela *rel, *relend;
a6aa5195 4373 asection *got2;
25dbc73a 4374
7dda2462
TG
4375 if (info->relocatable)
4376 return TRUE;
4377
c87b5a93
AM
4378 if ((sec->flags & SEC_ALLOC) == 0)
4379 return TRUE;
4380
25dbc73a
AM
4381 elf_section_data (sec)->local_dynrel = NULL;
4382
4383 htab = ppc_elf_hash_table (info);
0ffa91dd 4384 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
4385 sym_hashes = elf_sym_hashes (abfd);
4386 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 4387 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4388
4389 relend = relocs + sec->reloc_count;
4390 for (rel = relocs; rel < relend; rel++)
4391 {
4392 unsigned long r_symndx;
4393 enum elf_ppc_reloc_type r_type;
4394 struct elf_link_hash_entry *h = NULL;
4395
4396 r_symndx = ELF32_R_SYM (rel->r_info);
4397 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 4398 {
25dbc73a
AM
4399 struct ppc_elf_dyn_relocs **pp, *p;
4400 struct ppc_elf_link_hash_entry *eh;
4401
4402 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4403 while (h->root.type == bfd_link_hash_indirect
4404 || h->root.type == bfd_link_hash_warning)
4405 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4406 eh = (struct ppc_elf_link_hash_entry *) h;
4407
4408 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4409 if (p->sec == sec)
4410 {
4411 /* Everything must go for SEC. */
4412 *pp = p->next;
4413 break;
4414 }
a876ecf9 4415 }
ee05f2fe 4416
25dbc73a 4417 r_type = ELF32_R_TYPE (rel->r_info);
e054468f
AM
4418 if (!htab->is_vxworks && is_branch_reloc (r_type))
4419 {
4420 struct plt_entry **ifunc = NULL;
4421 if (h != NULL)
4422 {
4423 if (h->type == STT_GNU_IFUNC)
4424 ifunc = &h->plt.plist;
4425 }
4426 else if (local_got_refcounts != NULL)
4427 {
4428 struct plt_entry **local_plt = (struct plt_entry **)
4429 (local_got_refcounts + symtab_hdr->sh_info);
4430 char *local_got_tls_masks = (char *)
4431 (local_plt + symtab_hdr->sh_info);
4432 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4433 ifunc = local_plt + r_symndx;
4434 }
4435 if (ifunc != NULL)
4436 {
4437 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
4438 struct plt_entry *ent = find_plt_ent (ifunc, got2, addend);
4439 if (ent->plt.refcount > 0)
4440 ent->plt.refcount -= 1;
4441 continue;
4442 }
4443 }
4444
25dbc73a 4445 switch (r_type)
ee05f2fe 4446 {
25dbc73a
AM
4447 case R_PPC_GOT_TLSLD16:
4448 case R_PPC_GOT_TLSLD16_LO:
4449 case R_PPC_GOT_TLSLD16_HI:
4450 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4451 case R_PPC_GOT_TLSGD16:
4452 case R_PPC_GOT_TLSGD16_LO:
4453 case R_PPC_GOT_TLSGD16_HI:
4454 case R_PPC_GOT_TLSGD16_HA:
4455 case R_PPC_GOT_TPREL16:
4456 case R_PPC_GOT_TPREL16_LO:
4457 case R_PPC_GOT_TPREL16_HI:
4458 case R_PPC_GOT_TPREL16_HA:
4459 case R_PPC_GOT_DTPREL16:
4460 case R_PPC_GOT_DTPREL16_LO:
4461 case R_PPC_GOT_DTPREL16_HI:
4462 case R_PPC_GOT_DTPREL16_HA:
4463 case R_PPC_GOT16:
4464 case R_PPC_GOT16_LO:
4465 case R_PPC_GOT16_HI:
4466 case R_PPC_GOT16_HA:
4467 if (h != NULL)
ee05f2fe 4468 {
25dbc73a
AM
4469 if (h->got.refcount > 0)
4470 h->got.refcount--;
ee05f2fe 4471 }
25dbc73a
AM
4472 else if (local_got_refcounts != NULL)
4473 {
4474 if (local_got_refcounts[r_symndx] > 0)
4475 local_got_refcounts[r_symndx]--;
4476 }
4477 break;
ee05f2fe 4478
25dbc73a
AM
4479 case R_PPC_REL24:
4480 case R_PPC_REL14:
4481 case R_PPC_REL14_BRTAKEN:
4482 case R_PPC_REL14_BRNTAKEN:
4483 case R_PPC_REL32:
3b36f7e6 4484 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM
4485 break;
4486 /* Fall thru */
ee05f2fe 4487
25dbc73a
AM
4488 case R_PPC_ADDR32:
4489 case R_PPC_ADDR24:
4490 case R_PPC_ADDR16:
4491 case R_PPC_ADDR16_LO:
4492 case R_PPC_ADDR16_HI:
4493 case R_PPC_ADDR16_HA:
4494 case R_PPC_ADDR14:
4495 case R_PPC_ADDR14_BRTAKEN:
4496 case R_PPC_ADDR14_BRNTAKEN:
4497 case R_PPC_UADDR32:
4498 case R_PPC_UADDR16:
87538722
AM
4499 if (info->shared)
4500 break;
4501
25dbc73a
AM
4502 case R_PPC_PLT32:
4503 case R_PPC_PLTREL24:
87538722 4504 case R_PPC_PLTREL32:
25dbc73a
AM
4505 case R_PPC_PLT16_LO:
4506 case R_PPC_PLT16_HI:
4507 case R_PPC_PLT16_HA:
4508 if (h != NULL)
4509 {
a6aa5195 4510 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3ec01793
AM
4511 struct plt_entry *ent = find_plt_ent (&h->plt.plist,
4512 got2, addend);
a6aa5195
AM
4513 if (ent->plt.refcount > 0)
4514 ent->plt.refcount -= 1;
25dbc73a
AM
4515 }
4516 break;
ee05f2fe 4517
25dbc73a
AM
4518 default:
4519 break;
4520 }
7fce784e 4521 }
7fce784e
AS
4522 return TRUE;
4523}
25dbc73a 4524\f
3a71aa26
AM
4525/* Set plt output section type, htab->tls_get_addr, and call the
4526 generic ELF tls_setup function. */
7fce784e 4527
25dbc73a
AM
4528asection *
4529ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 4530{
25dbc73a 4531 struct ppc_elf_link_hash_table *htab;
7fce784e 4532
25dbc73a 4533 htab = ppc_elf_hash_table (info);
4a3dc543 4534 if (htab->plt_type == PLT_NEW
d7128ce4
AM
4535 && htab->plt != NULL
4536 && htab->plt->output_section != NULL)
4537 {
4538 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4539 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4540 }
4541
25dbc73a
AM
4542 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4543 FALSE, FALSE, TRUE);
25dbc73a 4544 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
4545}
4546
3a71aa26
AM
4547/* Return TRUE iff REL is a branch reloc with a global symbol matching
4548 HASH. */
4549
4550static bfd_boolean
4551branch_reloc_hash_match (const bfd *ibfd,
4552 const Elf_Internal_Rela *rel,
4553 const struct elf_link_hash_entry *hash)
4554{
4555 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4556 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4557 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4558
e054468f 4559 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
3a71aa26
AM
4560 {
4561 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4562 struct elf_link_hash_entry *h;
4563
4564 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4565 while (h->root.type == bfd_link_hash_indirect
4566 || h->root.type == bfd_link_hash_warning)
4567 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4568 if (h == hash)
4569 return TRUE;
4570 }
4571 return FALSE;
4572}
4573
25dbc73a
AM
4574/* Run through all the TLS relocs looking for optimization
4575 opportunities. */
252b5132 4576
25dbc73a
AM
4577bfd_boolean
4578ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4579 struct bfd_link_info *info)
252b5132 4580{
7fce784e 4581 bfd *ibfd;
25dbc73a
AM
4582 asection *sec;
4583 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 4584 int pass;
252b5132 4585
1d483afe 4586 if (info->relocatable || !info->executable)
25dbc73a 4587 return TRUE;
252b5132 4588
7619e7c7 4589 htab = ppc_elf_hash_table (info);
b7fcf6f6
AM
4590 /* Make two passes through the relocs. First time check that tls
4591 relocs involved in setting up a tls_get_addr call are indeed
4592 followed by such a call. If they are not, exclude them from
4593 the optimizations done on the second pass. */
4594 for (pass = 0; pass < 2; ++pass)
4595 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4596 {
4597 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 4598 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7619e7c7 4599
b7fcf6f6
AM
4600 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4601 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4602 {
4603 Elf_Internal_Rela *relstart, *rel, *relend;
252b5132 4604
b7fcf6f6
AM
4605 /* Read the relocations. */
4606 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4607 info->keep_memory);
4608 if (relstart == NULL)
4609 return FALSE;
7619e7c7 4610
b7fcf6f6
AM
4611 relend = relstart + sec->reloc_count;
4612 for (rel = relstart; rel < relend; rel++)
4613 {
4614 enum elf_ppc_reloc_type r_type;
4615 unsigned long r_symndx;
4616 struct elf_link_hash_entry *h = NULL;
4617 char *tls_mask;
4618 char tls_set, tls_clear;
4619 bfd_boolean is_local;
4620 int expecting_tls_get_addr;
4621 bfd_signed_vma *got_count;
4622
4623 r_symndx = ELF32_R_SYM (rel->r_info);
4624 if (r_symndx >= symtab_hdr->sh_info)
4625 {
4626 struct elf_link_hash_entry **sym_hashes;
7fce784e 4627
b7fcf6f6
AM
4628 sym_hashes = elf_sym_hashes (ibfd);
4629 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4630 while (h->root.type == bfd_link_hash_indirect
4631 || h->root.type == bfd_link_hash_warning)
4632 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4633 }
7619e7c7 4634
b7fcf6f6
AM
4635 expecting_tls_get_addr = 0;
4636 is_local = FALSE;
4637 if (h == NULL
4638 || !h->def_dynamic)
4639 is_local = TRUE;
7619e7c7 4640
b7fcf6f6
AM
4641 r_type = ELF32_R_TYPE (rel->r_info);
4642 switch (r_type)
4643 {
4644 case R_PPC_GOT_TLSLD16:
4645 case R_PPC_GOT_TLSLD16_LO:
4646 expecting_tls_get_addr = 1;
4647 /* Fall thru */
4648
4649 case R_PPC_GOT_TLSLD16_HI:
4650 case R_PPC_GOT_TLSLD16_HA:
4651 /* These relocs should never be against a symbol
4652 defined in a shared lib. Leave them alone if
4653 that turns out to be the case. */
4654 if (!is_local)
4655 continue;
4656
4657 /* LD -> LE */
4658 tls_set = 0;
4659 tls_clear = TLS_LD;
4660 break;
4661
4662 case R_PPC_GOT_TLSGD16:
4663 case R_PPC_GOT_TLSGD16_LO:
4664 expecting_tls_get_addr = 1;
4665 /* Fall thru */
4666
4667 case R_PPC_GOT_TLSGD16_HI:
4668 case R_PPC_GOT_TLSGD16_HA:
4669 if (is_local)
4670 /* GD -> LE */
4671 tls_set = 0;
4672 else
4673 /* GD -> IE */
4674 tls_set = TLS_TLS | TLS_TPRELGD;
4675 tls_clear = TLS_GD;
4676 break;
4677
4678 case R_PPC_GOT_TPREL16:
4679 case R_PPC_GOT_TPREL16_LO:
4680 case R_PPC_GOT_TPREL16_HI:
4681 case R_PPC_GOT_TPREL16_HA:
4682 if (is_local)
4683 {
4684 /* IE -> LE */
4685 tls_set = 0;
4686 tls_clear = TLS_TPREL;
4687 break;
4688 }
4689 else
4690 continue;
4691
4692 default:
25dbc73a 4693 continue;
b7fcf6f6 4694 }
25dbc73a 4695
b7fcf6f6
AM
4696 if (pass == 0)
4697 {
727fc41e
AM
4698 if (!expecting_tls_get_addr
4699 || !sec->has_tls_get_addr_call)
b7fcf6f6 4700 continue;
25dbc73a 4701
3a71aa26
AM
4702 if (rel + 1 < relend
4703 && branch_reloc_hash_match (ibfd, rel + 1,
4704 htab->tls_get_addr))
4705 continue;
25dbc73a 4706
b7fcf6f6
AM
4707 /* Uh oh, we didn't find the expected call. We
4708 could just mark this symbol to exclude it
4709 from tls optimization but it's safer to skip
4710 the entire section. */
4711 sec->has_tls_reloc = 0;
4712 break;
4713 }
25dbc73a 4714
b7fcf6f6
AM
4715 if (h != NULL)
4716 {
4717 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4718 got_count = &h->got.refcount;
4719 }
4720 else
4721 {
4722 Elf_Internal_Sym *sym;
4723 bfd_signed_vma *lgot_refs;
e054468f 4724 struct plt_entry **local_plt;
b7fcf6f6 4725 char *lgot_masks;
25dbc73a 4726
b7fcf6f6
AM
4727 if (locsyms == NULL)
4728 {
4729 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4730 if (locsyms == NULL)
4731 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4732 symtab_hdr->sh_info,
4733 0, NULL, NULL, NULL);
4734 if (locsyms == NULL)
4735 {
4736 if (elf_section_data (sec)->relocs != relstart)
4737 free (relstart);
4738 return FALSE;
4739 }
4740 }
4741 sym = locsyms + r_symndx;
4742 lgot_refs = elf_local_got_refcounts (ibfd);
4743 if (lgot_refs == NULL)
4744 abort ();
e054468f
AM
4745 local_plt = (struct plt_entry **)
4746 (lgot_refs + symtab_hdr->sh_info);
4747 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
b7fcf6f6
AM
4748 tls_mask = &lgot_masks[r_symndx];
4749 got_count = &lgot_refs[r_symndx];
4750 }
25dbc73a 4751
b7fcf6f6
AM
4752 if (tls_set == 0)
4753 {
4754 /* We managed to get rid of a got entry. */
4755 if (*got_count > 0)
4756 *got_count -= 1;
4757 }
25dbc73a 4758
b7fcf6f6
AM
4759 if (expecting_tls_get_addr)
4760 {
4761 struct plt_entry *ent;
25dbc73a 4762
3ec01793
AM
4763 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4764 NULL, 0);
b7fcf6f6
AM
4765 if (ent != NULL && ent->plt.refcount > 0)
4766 ent->plt.refcount -= 1;
4767 }
25dbc73a 4768
b7fcf6f6
AM
4769 *tls_mask |= tls_set;
4770 *tls_mask &= ~tls_clear;
4771 }
25dbc73a 4772
b7fcf6f6
AM
4773 if (elf_section_data (sec)->relocs != relstart)
4774 free (relstart);
4775 }
4776
4777 if (locsyms != NULL
4778 && (symtab_hdr->contents != (unsigned char *) locsyms))
4779 {
4780 if (!info->keep_memory)
4781 free (locsyms);
4782 else
4783 symtab_hdr->contents = (unsigned char *) locsyms;
4784 }
4785 }
25dbc73a
AM
4786 return TRUE;
4787}
4788\f
625af618
AM
4789/* Return true if we have dynamic relocs that apply to read-only sections. */
4790
4791static bfd_boolean
4792readonly_dynrelocs (struct elf_link_hash_entry *h)
4793{
4794 struct ppc_elf_dyn_relocs *p;
4795
4796 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4797 {
4798 asection *s = p->sec->output_section;
4799
4800 if (s != NULL
4801 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4802 == (SEC_READONLY | SEC_ALLOC)))
4803 return TRUE;
4804 }
4805 return FALSE;
4806}
4807
25dbc73a
AM
4808/* Adjust a symbol defined by a dynamic object and referenced by a
4809 regular object. The current definition is in some section of the
4810 dynamic object, but we're not including those sections. We have to
4811 change the definition to something the rest of the link can
4812 understand. */
7fce784e 4813
25dbc73a
AM
4814static bfd_boolean
4815ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4816 struct elf_link_hash_entry *h)
4817{
4818 struct ppc_elf_link_hash_table *htab;
4819 asection *s;
7fce784e 4820
25dbc73a
AM
4821#ifdef DEBUG
4822 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4823 h->root.root.string);
4824#endif
252b5132 4825
25dbc73a
AM
4826 /* Make sure we know what is going on here. */
4827 htab = ppc_elf_hash_table (info);
4828 BFD_ASSERT (htab->elf.dynobj != NULL
4829 && (h->needs_plt
4830 || h->u.weakdef != NULL
4831 || (h->def_dynamic
4832 && h->ref_regular
4833 && !h->def_regular)));
252b5132 4834
25dbc73a
AM
4835 /* Deal with function syms. */
4836 if (h->type == STT_FUNC
e054468f 4837 || h->type == STT_GNU_IFUNC
25dbc73a
AM
4838 || h->needs_plt)
4839 {
4840 /* Clear procedure linkage table information for any symbol that
4841 won't need a .plt entry. */
a6aa5195
AM
4842 struct plt_entry *ent;
4843 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4844 if (ent->plt.refcount > 0)
4845 break;
4846 if (ent == NULL
e054468f
AM
4847 || (h->type != STT_GNU_IFUNC
4848 && (SYMBOL_CALLS_LOCAL (info, h)
4849 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4850 && h->root.type == bfd_link_hash_undefweak))))
252b5132 4851 {
25dbc73a 4852 /* A PLT entry is not required/allowed when:
252b5132 4853
25dbc73a
AM
4854 1. We are not using ld.so; because then the PLT entry
4855 can't be set up, so we can't use one. In this case,
4856 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 4857
25dbc73a
AM
4858 2. GC has rendered the entry unused.
4859
4860 3. We know for certain that a call to this symbol
4861 will go to this object, or will remain undefined. */
a6aa5195 4862 h->plt.plist = NULL;
25dbc73a
AM
4863 h->needs_plt = 0;
4864 }
625af618
AM
4865 else
4866 {
25f23106
AM
4867 /* After adjust_dynamic_symbol, non_got_ref set in the
4868 non-shared case means that we have allocated space in
4869 .dynbss for the symbol and thus dyn_relocs for this
4870 symbol should be discarded.
625af618
AM
4871 If we get here we know we are making a PLT entry for this
4872 symbol, and in an executable we'd normally resolve
4873 relocations against this symbol to the PLT entry. Allow
4874 dynamic relocs if the reference is weak, and the dynamic
4875 relocs will not cause text relocation. */
4876 if (!h->ref_regular_nonweak
4877 && h->non_got_ref
25f23106 4878 && h->type != STT_GNU_IFUNC
625af618
AM
4879 && !htab->is_vxworks
4880 && !ppc_elf_hash_entry (h)->has_sda_refs
4881 && !readonly_dynrelocs (h))
4882 h->non_got_ref = 0;
4883 }
25dbc73a 4884 return TRUE;
252b5132 4885 }
25dbc73a 4886 else
a6aa5195 4887 h->plt.plist = NULL;
252b5132 4888
25dbc73a
AM
4889 /* If this is a weak symbol, and there is a real definition, the
4890 processor independent code will have arranged for us to see the
4891 real definition first, and we can just use the same value. */
4892 if (h->u.weakdef != NULL)
252b5132 4893 {
25dbc73a
AM
4894 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4895 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4896 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4897 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4898 if (ELIMINATE_COPY_RELOCS)
4899 h->non_got_ref = h->u.weakdef->non_got_ref;
4900 return TRUE;
4901 }
dc810e39 4902
25dbc73a
AM
4903 /* This is a reference to a symbol defined by a dynamic object which
4904 is not a function. */
252b5132 4905
25dbc73a
AM
4906 /* If we are creating a shared library, we must presume that the
4907 only references to the symbol are via the global offset table.
4908 For such cases we need not do anything here; the relocations will
4909 be handled correctly by relocate_section. */
4910 if (info->shared)
4911 return TRUE;
252b5132 4912
25dbc73a
AM
4913 /* If there are no references to this symbol that do not use the
4914 GOT, we don't need to generate a copy reloc. */
4915 if (!h->non_got_ref)
4916 return TRUE;
4917
cfd2c773
NS
4918 /* If we didn't find any dynamic relocs in read-only sections, then
4919 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4920 We can't do this if there are any small data relocations. This
4921 doesn't work on VxWorks, where we can not have dynamic
4922 relocations (other than copy and jump slot relocations) in an
4923 executable. */
4dc4a9a5 4924 if (ELIMINATE_COPY_RELOCS
cfd2c773 4925 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
4926 && !htab->is_vxworks
4927 && !h->def_regular
4928 && !readonly_dynrelocs (h))
25dbc73a 4929 {
625af618
AM
4930 h->non_got_ref = 0;
4931 return TRUE;
252b5132
RH
4932 }
4933
909272ee
AM
4934 if (h->size == 0)
4935 {
4936 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4937 h->root.root.string);
4938 return TRUE;
4939 }
4940
25dbc73a
AM
4941 /* We must allocate the symbol in our .dynbss section, which will
4942 become part of the .bss section of the executable. There will be
4943 an entry for this symbol in the .dynsym section. The dynamic
4944 object will contain position independent code, so all references
4945 from the dynamic object to this symbol will go through the global
4946 offset table. The dynamic linker will use the .dynsym entry to
4947 determine the address it must put in the global offset table, so
4948 both the dynamic object and the regular object will refer to the
4949 same memory location for the variable.
4950
4dc4a9a5
DJ
4951 Of course, if the symbol is referenced using SDAREL relocs, we
4952 must instead allocate it in .sbss. */
25dbc73a 4953
4dc4a9a5 4954 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4955 s = htab->dynsbss;
4956 else
4957 s = htab->dynbss;
4958 BFD_ASSERT (s != NULL);
4959
4960 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4961 copy the initial value out of the dynamic object and into the
4962 runtime process image. We need to remember the offset into the
4963 .rela.bss section we are going to use. */
4964 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4965 {
4966 asection *srel;
4967
4dc4a9a5 4968 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4969 srel = htab->relsbss;
4970 else
4971 srel = htab->relbss;
4972 BFD_ASSERT (srel != NULL);
4973 srel->size += sizeof (Elf32_External_Rela);
4974 h->needs_copy = 1;
4975 }
7619e7c7 4976
027297b7 4977 return _bfd_elf_adjust_dynamic_copy (h, s);
25dbc73a
AM
4978}
4979\f
ac39eb42
AM
4980/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4981 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4982 specifying the addend on the plt relocation. For -fpic code, the sym
4983 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4984 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
4985
4986static bfd_boolean
4987add_stub_sym (struct plt_entry *ent,
4988 struct elf_link_hash_entry *h,
ac39eb42 4989 struct bfd_link_info *info)
0ba07910
AM
4990{
4991 struct elf_link_hash_entry *sh;
4992 size_t len1, len2, len3;
4993 char *name;
ac39eb42
AM
4994 const char *stub;
4995 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4996
4997 if (info->shared || info->pie)
4998 stub = ".plt_pic32.";
4999 else
5000 stub = ".plt_call32.";
0ba07910
AM
5001
5002 len1 = strlen (h->root.root.string);
ac39eb42 5003 len2 = strlen (stub);
0ba07910
AM
5004 len3 = 0;
5005 if (ent->sec)
5006 len3 = strlen (ent->sec->name);
ac39eb42 5007 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
5008 if (name == NULL)
5009 return FALSE;
5010 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5011 if (ent->sec)
5012 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
5013 memcpy (name + 8 + len3, stub, len2);
5014 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
5015 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5016 if (sh == NULL)
5017 return FALSE;
5018 if (sh->root.type == bfd_link_hash_new)
5019 {
5020 sh->root.type = bfd_link_hash_defined;
5021 sh->root.u.def.section = htab->glink;
5022 sh->root.u.def.value = ent->glink_offset;
5023 sh->ref_regular = 1;
5024 sh->def_regular = 1;
5025 sh->ref_regular_nonweak = 1;
5026 sh->forced_local = 1;
5027 sh->non_elf = 0;
5028 }
5029 return TRUE;
5030}
5031
3b36f7e6
AM
5032/* Allocate NEED contiguous space in .got, and return the offset.
5033 Handles allocation of the got header when crossing 32k. */
5034
5035static bfd_vma
5036allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5037{
5038 bfd_vma where;
4a3dc543 5039 unsigned int max_before_header;
3b36f7e6 5040
4a3dc543 5041 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
5042 {
5043 where = htab->got->size;
5044 htab->got->size += need;
5045 }
3b36f7e6
AM
5046 else
5047 {
4a3dc543
RS
5048 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5049 if (need <= htab->got_gap)
3b36f7e6 5050 {
4a3dc543
RS
5051 where = max_before_header - htab->got_gap;
5052 htab->got_gap -= need;
5053 }
5054 else
5055 {
5056 if (htab->got->size + need > max_before_header
5057 && htab->got->size <= max_before_header)
5058 {
5059 htab->got_gap = max_before_header - htab->got->size;
5060 htab->got->size = max_before_header + htab->got_header_size;
5061 }
5062 where = htab->got->size;
5063 htab->got->size += need;
3b36f7e6 5064 }
3b36f7e6
AM
5065 }
5066 return where;
5067}
5068
25dbc73a 5069/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 5070
b34976b6 5071static bfd_boolean
25dbc73a 5072allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 5073{
25dbc73a
AM
5074 struct bfd_link_info *info = inf;
5075 struct ppc_elf_link_hash_entry *eh;
7619e7c7 5076 struct ppc_elf_link_hash_table *htab;
25dbc73a 5077 struct ppc_elf_dyn_relocs *p;
252b5132 5078
25dbc73a 5079 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5080 return TRUE;
252b5132 5081
25dbc73a
AM
5082 if (h->root.type == bfd_link_hash_warning)
5083 /* When warning symbols are created, they **replace** the "real"
5084 entry in the hash table, thus we never get to see the real
5085 symbol in a hash traversal. So look at it now. */
5086 h = (struct elf_link_hash_entry *) h->root.u.i.link;
e47cd125 5087
7619e7c7 5088 htab = ppc_elf_hash_table (info);
e054468f
AM
5089 if (htab->elf.dynamic_sections_created
5090 || h->type == STT_GNU_IFUNC)
252b5132 5091 {
a6aa5195
AM
5092 struct plt_entry *ent;
5093 bfd_boolean doneone = FALSE;
28e99bb6 5094 bfd_vma plt_offset = 0, glink_offset = 0;
e054468f 5095 bfd_boolean dyn;
28e99bb6 5096
a6aa5195
AM
5097 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5098 if (ent->plt.refcount > 0)
5099 {
5100 /* Make sure this symbol is output as a dynamic symbol. */
5101 if (h->dynindx == -1
e054468f
AM
5102 && !h->forced_local
5103 && !h->def_regular
5104 && htab->elf.dynamic_sections_created)
a6aa5195
AM
5105 {
5106 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5107 return FALSE;
5108 }
252b5132 5109
e054468f 5110 dyn = htab->elf.dynamic_sections_created;
a6aa5195 5111 if (info->shared
e054468f
AM
5112 || h->type == STT_GNU_IFUNC
5113 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
a6aa5195
AM
5114 {
5115 asection *s = htab->plt;
25f23106 5116 if (!dyn || h->dynindx == -1)
e054468f 5117 s = htab->iplt;
7619e7c7 5118
25f23106 5119 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
a6aa5195 5120 {
a6aa5195 5121 if (!doneone)
28e99bb6
AM
5122 {
5123 plt_offset = s->size;
5124 s->size += 4;
5125 }
5126 ent->plt.offset = plt_offset;
d7128ce4 5127
a6aa5195 5128 s = htab->glink;
28e99bb6
AM
5129 if (!doneone || info->shared || info->pie)
5130 {
5131 glink_offset = s->size;
5132 s->size += GLINK_ENTRY_SIZE;
5133 }
5134 if (!doneone
5135 && !info->shared
625af618 5136 && h->def_dynamic
a6aa5195
AM
5137 && !h->def_regular)
5138 {
5139 h->root.u.def.section = s;
28e99bb6 5140 h->root.u.def.value = glink_offset;
a6aa5195 5141 }
28e99bb6 5142 ent->glink_offset = glink_offset;
0ba07910
AM
5143
5144 if (htab->emit_stub_syms
ac39eb42 5145 && !add_stub_sym (ent, h, info))
0ba07910 5146 return FALSE;
a6aa5195
AM
5147 }
5148 else
5149 {
a6aa5195
AM
5150 if (!doneone)
5151 {
28e99bb6
AM
5152 /* If this is the first .plt entry, make room
5153 for the special first entry. */
5154 if (s->size == 0)
9d8504b1 5155 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
5156
5157 /* The PowerPC PLT is actually composed of two
5158 parts, the first part is 2 words (for a load
5159 and a jump), and then there is a remaining
5160 word available at the end. */
9d8504b1
PB
5161 plt_offset = (htab->plt_initial_entry_size
5162 + (htab->plt_slot_size
5163 * ((s->size
5164 - htab->plt_initial_entry_size)
5165 / htab->plt_entry_size)));
28e99bb6
AM
5166
5167 /* If this symbol is not defined in a regular
5168 file, and we are not generating a shared
5169 library, then set the symbol to this location
5170 in the .plt. This is required to make
5171 function pointers compare as equal between
5172 the normal executable and the shared library. */
5173 if (! info->shared
625af618 5174 && h->def_dynamic
28e99bb6
AM
5175 && !h->def_regular)
5176 {
5177 h->root.u.def.section = s;
5178 h->root.u.def.value = plt_offset;
5179 }
5180
9d8504b1
PB
5181 /* Make room for this entry. */
5182 s->size += htab->plt_entry_size;
5183 /* After the 8192nd entry, room for two entries
5184 is allocated. */
4a3dc543 5185 if (htab->plt_type == PLT_OLD
9d8504b1
PB
5186 && (s->size - htab->plt_initial_entry_size)
5187 / htab->plt_entry_size
5188 > PLT_NUM_SINGLE_ENTRIES)
5189 s->size += htab->plt_entry_size;
a6aa5195 5190 }
28e99bb6 5191 ent->plt.offset = plt_offset;
a6aa5195 5192 }
25dbc73a 5193
a6aa5195
AM
5194 /* We also need to make an entry in the .rela.plt section. */
5195 if (!doneone)
5196 {
25f23106
AM
5197 if (!htab->elf.dynamic_sections_created
5198 || h->dynindx == -1)
e054468f
AM
5199 htab->reliplt->size += sizeof (Elf32_External_Rela);
5200 else
9d8504b1 5201 {
e054468f
AM
5202 htab->relplt->size += sizeof (Elf32_External_Rela);
5203
5204 if (htab->plt_type == PLT_VXWORKS)
9d8504b1 5205 {
e054468f
AM
5206 /* Allocate space for the unloaded relocations. */
5207 if (!info->shared
5208 && htab->elf.dynamic_sections_created)
9d8504b1 5209 {
e054468f
AM
5210 if (ent->plt.offset
5211 == (bfd_vma) htab->plt_initial_entry_size)
5212 {
5213 htab->srelplt2->size
5214 += (sizeof (Elf32_External_Rela)
5215 * VXWORKS_PLTRESOLVE_RELOCS);
5216 }
5217
9d8504b1 5218 htab->srelplt2->size
e054468f
AM
5219 += (sizeof (Elf32_External_Rela)
5220 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
9d8504b1
PB
5221 }
5222
e054468f
AM
5223 /* Every PLT entry has an associated GOT entry in
5224 .got.plt. */
5225 htab->sgotplt->size += 4;
9d8504b1 5226 }
9d8504b1 5227 }
a6aa5195
AM
5228 doneone = TRUE;
5229 }
5230 }
5231 else
5232 ent->plt.offset = (bfd_vma) -1;
a6aa5195 5233 }
2ce859a1
AM
5234 else
5235 ent->plt.offset = (bfd_vma) -1;
5236
5237 if (!doneone)
5238 {
5239 h->plt.plist = NULL;
5240 h->needs_plt = 0;
5241 }
25dbc73a
AM
5242 }
5243 else
5244 {
a6aa5195 5245 h->plt.plist = NULL;
25dbc73a
AM
5246 h->needs_plt = 0;
5247 }
5248
5249 eh = (struct ppc_elf_link_hash_entry *) h;
5250 if (eh->elf.got.refcount > 0)
5251 {
d6e14abc
AM
5252 bfd_boolean dyn;
5253 unsigned int need;
5254
25dbc73a
AM
5255 /* Make sure this symbol is output as a dynamic symbol. */
5256 if (eh->elf.dynindx == -1
b099ab9f 5257 && !eh->elf.forced_local
25f23106 5258 && eh->elf.type != STT_GNU_IFUNC
b099ab9f 5259 && htab->elf.dynamic_sections_created)
25dbc73a
AM
5260 {
5261 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 5262 return FALSE;
25dbc73a 5263 }
252b5132 5264
d6e14abc
AM
5265 need = 0;
5266 if ((eh->tls_mask & TLS_TLS) != 0)
25dbc73a 5267 {
d6e14abc 5268 if ((eh->tls_mask & TLS_LD) != 0)
252b5132 5269 {
d6e14abc
AM
5270 if (!eh->elf.def_dynamic)
5271 /* We'll just use htab->tlsld_got.offset. This should
5272 always be the case. It's a little odd if we have
5273 a local dynamic reloc against a non-local symbol. */
5274 htab->tlsld_got.refcount += 1;
5275 else
3b36f7e6 5276 need += 8;
252b5132 5277 }
d6e14abc
AM
5278 if ((eh->tls_mask & TLS_GD) != 0)
5279 need += 8;
5280 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5281 need += 4;
5282 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 5283 need += 4;
d6e14abc
AM
5284 }
5285 else
5286 need += 4;
5287 if (need == 0)
5288 eh->elf.got.offset = (bfd_vma) -1;
5289 else
5290 {
25f23106 5291 asection *rsec = NULL;
3b36f7e6 5292 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM
5293 dyn = htab->elf.dynamic_sections_created;
5294 if ((info->shared
5295 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5296 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5297 || eh->elf.root.type != bfd_link_hash_undefweak))
25f23106
AM
5298 rsec = htab->relgot;
5299 else if (h->type == STT_GNU_IFUNC)
5300 rsec = htab->reliplt;
5301 if (rsec != NULL)
252b5132 5302 {
3b36f7e6
AM
5303 /* All the entries we allocated need relocs.
5304 Except LD only needs one. */
d6e14abc
AM
5305 if ((eh->tls_mask & TLS_LD) != 0
5306 && eh->elf.def_dynamic)
3b36f7e6 5307 need -= 4;
25f23106 5308 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 5309 }
25dbc73a
AM
5310 }
5311 }
5312 else
5313 eh->elf.got.offset = (bfd_vma) -1;
252b5132 5314
b099ab9f 5315 if (eh->dyn_relocs == NULL
25f23106
AM
5316 || (!htab->elf.dynamic_sections_created
5317 && h->type != STT_GNU_IFUNC))
25dbc73a 5318 return TRUE;
252b5132 5319
25dbc73a
AM
5320 /* In the shared -Bsymbolic case, discard space allocated for
5321 dynamic pc-relative relocs against symbols which turn out to be
5322 defined in regular objects. For the normal shared case, discard
5323 space for relocs that have become local due to symbol visibility
5324 changes. */
5325
5326 if (info->shared)
5327 {
5328 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 5329 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
5330 generated via assembly. We want calls to protected symbols to
5331 resolve directly to the function rather than going via the plt.
5332 If people want function pointer comparisons to work as expected
5333 then they should avoid writing weird assembly. */
5334 if (SYMBOL_CALLS_LOCAL (info, h))
5335 {
5336 struct ppc_elf_dyn_relocs **pp;
5337
5338 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 5339 {
25dbc73a
AM
5340 p->count -= p->pc_count;
5341 p->pc_count = 0;
5342 if (p->count == 0)
5343 *pp = p->next;
5344 else
5345 pp = &p->next;
252b5132 5346 }
25dbc73a 5347 }
252b5132 5348
3348747a
NS
5349 if (htab->is_vxworks)
5350 {
5351 struct ppc_elf_dyn_relocs **pp;
5352
5353 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5354 {
5355 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5356 *pp = p->next;
5357 else
5358 pp = &p->next;
5359 }
5360 }
5361
89200bf8
AM
5362 /* Discard relocs on undefined symbols that must be local. */
5363 if (eh->dyn_relocs != NULL
5364 && h->root.type == bfd_link_hash_undefined
5365 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5366 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5367 eh->dyn_relocs = NULL;
5368
25dbc73a
AM
5369 /* Also discard relocs on undefined weak syms with non-default
5370 visibility. */
cab87ef9
AM
5371 if (eh->dyn_relocs != NULL
5372 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 5373 {
dfbb6ac9
AM
5374 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5375 eh->dyn_relocs = NULL;
5376
5377 /* Make sure undefined weak symbols are output as a dynamic
5378 symbol in PIEs. */
5379 else if (h->dynindx == -1
e054468f
AM
5380 && !h->forced_local
5381 && !h->def_regular)
dfbb6ac9
AM
5382 {
5383 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5384 return FALSE;
5385 }
25dbc73a
AM
5386 }
5387 }
25f23106
AM
5388 else if (h->type == STT_GNU_IFUNC)
5389 {
5390 if (!h->non_got_ref)
5391 eh->dyn_relocs = NULL;
5392 }
25dbc73a
AM
5393 else if (ELIMINATE_COPY_RELOCS)
5394 {
5395 /* For the non-shared case, discard space for relocs against
5396 symbols which turn out to need copy relocs or are not
5397 dynamic. */
7619e7c7 5398
25dbc73a 5399 if (!h->non_got_ref
25dbc73a
AM
5400 && !h->def_regular)
5401 {
5402 /* Make sure this symbol is output as a dynamic symbol.
5403 Undefined weak syms won't yet be marked as dynamic. */
5404 if (h->dynindx == -1
25f23106 5405 && !h->forced_local)
25dbc73a
AM
5406 {
5407 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5408 return FALSE;
5409 }
7619e7c7 5410
25dbc73a
AM
5411 /* If that succeeded, we know we'll be keeping all the
5412 relocs. */
5413 if (h->dynindx != -1)
5414 goto keep;
5415 }
252b5132 5416
25dbc73a 5417 eh->dyn_relocs = NULL;
252b5132 5418
25dbc73a
AM
5419 keep: ;
5420 }
252b5132 5421
25dbc73a
AM
5422 /* Finally, allocate space. */
5423 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5424 {
5425 asection *sreloc = elf_section_data (p->sec)->sreloc;
25f23106
AM
5426 if (!htab->elf.dynamic_sections_created)
5427 sreloc = htab->reliplt;
25dbc73a
AM
5428 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5429 }
252b5132 5430
25dbc73a
AM
5431 return TRUE;
5432}
7619e7c7 5433
625af618
AM
5434/* Set DF_TEXTREL if we find any dynamic relocs that apply to
5435 read-only sections. */
7619e7c7 5436
25dbc73a 5437static bfd_boolean
625af618 5438maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 5439{
25dbc73a
AM
5440 if (h->root.type == bfd_link_hash_indirect)
5441 return TRUE;
252b5132 5442
25dbc73a
AM
5443 if (h->root.type == bfd_link_hash_warning)
5444 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5445
625af618 5446 if (readonly_dynrelocs (h))
25dbc73a 5447 {
625af618 5448 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 5449
625af618
AM
5450 /* Not an error, just cut short the traversal. */
5451 return FALSE;
25dbc73a
AM
5452 }
5453 return TRUE;
5454}
5455
5456/* Set the sizes of the dynamic sections. */
5457
5458static bfd_boolean
5459ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5460 struct bfd_link_info *info)
5461{
5462 struct ppc_elf_link_hash_table *htab;
5463 asection *s;
5464 bfd_boolean relocs;
5465 bfd *ibfd;
7fce784e 5466
252b5132 5467#ifdef DEBUG
25dbc73a 5468 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 5469#endif
252b5132 5470
25dbc73a
AM
5471 htab = ppc_elf_hash_table (info);
5472 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 5473
25dbc73a
AM
5474 if (elf_hash_table (info)->dynamic_sections_created)
5475 {
5476 /* Set the contents of the .interp section to the interpreter. */
5477 if (info->executable)
5478 {
5479 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5480 BFD_ASSERT (s != NULL);
5481 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5482 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5483 }
5484 }
252b5132 5485
4a3dc543 5486 if (htab->plt_type == PLT_OLD)
d7128ce4 5487 htab->got_header_size = 16;
4a3dc543 5488 else if (htab->plt_type == PLT_NEW)
d7128ce4 5489 htab->got_header_size = 12;
252b5132 5490
25dbc73a
AM
5491 /* Set up .got offsets for local syms, and space for local dynamic
5492 relocs. */
5493 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5494 {
5495 bfd_signed_vma *local_got;
5496 bfd_signed_vma *end_local_got;
e054468f
AM
5497 struct plt_entry **local_plt;
5498 struct plt_entry **end_local_plt;
25dbc73a
AM
5499 char *lgot_masks;
5500 bfd_size_type locsymcount;
5501 Elf_Internal_Shdr *symtab_hdr;
7fce784e 5502
0c8d6e5c 5503 if (!is_ppc_elf (ibfd))
25dbc73a 5504 continue;
7fce784e 5505
25dbc73a
AM
5506 for (s = ibfd->sections; s != NULL; s = s->next)
5507 {
5508 struct ppc_elf_dyn_relocs *p;
252b5132 5509
25dbc73a
AM
5510 for (p = ((struct ppc_elf_dyn_relocs *)
5511 elf_section_data (s)->local_dynrel);
5512 p != NULL;
5513 p = p->next)
5514 {
5515 if (!bfd_is_abs_section (p->sec)
5516 && bfd_is_abs_section (p->sec->output_section))
5517 {
5518 /* Input section has been discarded, either because
5519 it is a copy of a linkonce section or due to
5520 linker script /DISCARD/, so we'll be discarding
5521 the relocs too. */
7fce784e 5522 }
3348747a
NS
5523 else if (htab->is_vxworks
5524 && strcmp (p->sec->output_section->name,
5525 ".tls_vars") == 0)
5526 {
5527 /* Relocations in vxworks .tls_vars sections are
5528 handled specially by the loader. */
5529 }
25dbc73a 5530 else if (p->count != 0)
7fce784e 5531 {
25f23106
AM
5532 asection *sreloc = elf_section_data (p->sec)->sreloc;
5533 if (!htab->elf.dynamic_sections_created)
5534 sreloc = htab->reliplt;
5535 sreloc->size += p->count * sizeof (Elf32_External_Rela);
25dbc73a
AM
5536 if ((p->sec->output_section->flags
5537 & (SEC_READONLY | SEC_ALLOC))
5538 == (SEC_READONLY | SEC_ALLOC))
5539 info->flags |= DF_TEXTREL;
7fce784e 5540 }
252b5132 5541 }
252b5132 5542 }
252b5132 5543
25dbc73a
AM
5544 local_got = elf_local_got_refcounts (ibfd);
5545 if (!local_got)
5546 continue;
252b5132 5547
0ffa91dd 5548 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
5549 locsymcount = symtab_hdr->sh_info;
5550 end_local_got = local_got + locsymcount;
e054468f
AM
5551 local_plt = (struct plt_entry **) end_local_got;
5552 end_local_plt = local_plt + locsymcount;
5553 lgot_masks = (char *) end_local_plt;
25dbc73a
AM
5554 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5555 if (*local_got > 0)
5556 {
d6e14abc
AM
5557 unsigned int need = 0;
5558 if ((*lgot_masks & TLS_TLS) != 0)
25dbc73a 5559 {
d6e14abc
AM
5560 if ((*lgot_masks & TLS_GD) != 0)
5561 need += 8;
5562 if ((*lgot_masks & TLS_LD) != 0)
5563 htab->tlsld_got.refcount += 1;
5564 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5565 need += 4;
5566 if ((*lgot_masks & TLS_DTPREL) != 0)
5567 need += 4;
25dbc73a 5568 }
d6e14abc
AM
5569 else
5570 need += 4;
5571 if (need == 0)
5572 *local_got = (bfd_vma) -1;
25dbc73a
AM
5573 else
5574 {
3b36f7e6 5575 *local_got = allocate_got (htab, need);
25dbc73a 5576 if (info->shared)
3b36f7e6
AM
5577 htab->relgot->size += (need
5578 * (sizeof (Elf32_External_Rela) / 4));
25f23106
AM
5579 else if ((*lgot_masks & PLT_IFUNC) != 0)
5580 htab->reliplt->size += (need
5581 * (sizeof (Elf32_External_Rela) / 4));
25dbc73a
AM
5582 }
5583 }
5584 else
5585 *local_got = (bfd_vma) -1;
e054468f
AM
5586
5587 if (htab->is_vxworks)
5588 continue;
5589
5590 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5591 for (; local_plt < end_local_plt; ++local_plt)
5592 {
5593 struct plt_entry *ent;
5594 bfd_boolean doneone = FALSE;
5595 bfd_vma plt_offset = 0, glink_offset = 0;
5596
5597 for (ent = *local_plt; ent != NULL; ent = ent->next)
5598 if (ent->plt.refcount > 0)
5599 {
5600 asection *s = htab->iplt;
5601
5602 if (!doneone)
5603 {
5604 plt_offset = s->size;
5605 s->size += 4;
5606 }
5607 ent->plt.offset = plt_offset;
5608
5609 s = htab->glink;
5610 if (!doneone || info->shared || info->pie)
5611 {
5612 glink_offset = s->size;
5613 s->size += GLINK_ENTRY_SIZE;
5614 }
5615 ent->glink_offset = glink_offset;
5616
5617 if (!doneone)
5618 {
25f23106 5619 htab->reliplt->size += sizeof (Elf32_External_Rela);
e054468f
AM
5620 doneone = TRUE;
5621 }
5622 }
5623 else
5624 ent->plt.offset = (bfd_vma) -1;
5625 }
25dbc73a 5626 }
252b5132 5627
b7fcf6f6
AM
5628 /* Allocate space for global sym dynamic relocs. */
5629 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5630
3b36f7e6
AM
5631 if (htab->tlsld_got.refcount > 0)
5632 {
5633 htab->tlsld_got.offset = allocate_got (htab, 8);
5634 if (info->shared)
5635 htab->relgot->size += sizeof (Elf32_External_Rela);
5636 }
5637 else
5638 htab->tlsld_got.offset = (bfd_vma) -1;
5639
4a3dc543 5640 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
5641 {
5642 unsigned int g_o_t = 32768;
5643
4d962050
AM
5644 /* If we haven't allocated the header, do so now. When we get here,
5645 for old plt/got the got size will be 0 to 32764 (not allocated),
5646 or 32780 to 65536 (header allocated). For new plt/got, the
5647 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM
5648 if (htab->got->size <= 32768)
5649 {
5650 g_o_t = htab->got->size;
4a3dc543 5651 if (htab->plt_type == PLT_OLD)
4d962050 5652 g_o_t += 4;
3b36f7e6
AM
5653 htab->got->size += htab->got_header_size;
5654 }
3b36f7e6
AM
5655
5656 htab->elf.hgot->root.u.def.value = g_o_t;
5657 }
5658
e054468f
AM
5659 if (htab->glink != NULL
5660 && htab->glink->size != 0
5661 && htab->elf.dynamic_sections_created)
d7128ce4
AM
5662 {
5663 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM
5664 /* Space for the branch table. */
5665 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5666 /* Pad out to align the start of PLTresolve. */
5667 htab->glink->size += -htab->glink->size & 15;
d7128ce4 5668 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910
AM
5669
5670 if (htab->emit_stub_syms)
5671 {
5672 struct elf_link_hash_entry *sh;
5673 sh = elf_link_hash_lookup (&htab->elf, "__glink",
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_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 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5689 TRUE, FALSE, FALSE);
5690 if (sh == NULL)
5691 return FALSE;
5692 if (sh->root.type == bfd_link_hash_new)
5693 {
5694 sh->root.type = bfd_link_hash_defined;
5695 sh->root.u.def.section = htab->glink;
5696 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5697 sh->ref_regular = 1;
5698 sh->def_regular = 1;
5699 sh->ref_regular_nonweak = 1;
5700 sh->forced_local = 1;
5701 sh->non_elf = 0;
5702 }
5703 }
d7128ce4
AM
5704 }
5705
25dbc73a
AM
5706 /* We've now determined the sizes of the various dynamic sections.
5707 Allocate memory for them. */
5708 relocs = FALSE;
5709 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 5710 {
9d8504b1
PB
5711 bfd_boolean strip_section = TRUE;
5712
25dbc73a
AM
5713 if ((s->flags & SEC_LINKER_CREATED) == 0)
5714 continue;
252b5132 5715
25dbc73a 5716 if (s == htab->plt
e054468f 5717 || s == htab->got)
25dbc73a 5718 {
9d8504b1
PB
5719 /* We'd like to strip these sections if they aren't needed, but if
5720 we've exported dynamic symbols from them we must leave them.
5721 It's too late to tell BFD to get rid of the symbols. */
e054468f 5722 if (htab->elf.hplt != NULL)
9d8504b1 5723 strip_section = FALSE;
25dbc73a
AM
5724 /* Strip this section if we don't need it; see the
5725 comment below. */
5726 }
e054468f
AM
5727 else if (s == htab->iplt
5728 || s == htab->glink
5729 || s == htab->sgotplt
5730 || s == htab->sbss
5731 || s == htab->dynbss
5732 || s == htab->dynsbss
5733 || s == htab->sdata[0].section
c9a2f333 5734 || s == htab->sdata[1].section)
25dbc73a 5735 {
c9a2f333 5736 /* Strip these too. */
25dbc73a 5737 }
0112cd26 5738 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
25dbc73a 5739 {
c456f082 5740 if (s->size != 0)
25dbc73a
AM
5741 {
5742 /* Remember whether there are any relocation sections. */
5743 relocs = TRUE;
252b5132 5744
25dbc73a
AM
5745 /* We use the reloc_count field as a counter if we need
5746 to copy relocs into the output file. */
5747 s->reloc_count = 0;
252b5132
RH
5748 }
5749 }
25dbc73a
AM
5750 else
5751 {
5752 /* It's not one of our sections, so don't allocate space. */
5753 continue;
5754 }
252b5132 5755
9d8504b1 5756 if (s->size == 0 && strip_section)
25dbc73a 5757 {
c456f082
AM
5758 /* If we don't need this section, strip it from the
5759 output file. This is mostly to handle .rela.bss and
5760 .rela.plt. We must create both sections in
5761 create_dynamic_sections, because they must be created
5762 before the linker maps input sections to output
5763 sections. The linker does that before
5764 adjust_dynamic_symbol is called, and it is that
5765 function which decides whether anything needs to go
5766 into these sections. */
8423293d 5767 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
5768 continue;
5769 }
7fce784e 5770
d7128ce4 5771 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
5772 continue;
5773
25dbc73a
AM
5774 /* Allocate memory for the section contents. */
5775 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5776 if (s->contents == NULL)
5777 return FALSE;
5778 }
252b5132 5779
25dbc73a 5780 if (htab->elf.dynamic_sections_created)
7619e7c7 5781 {
25dbc73a
AM
5782 /* Add some entries to the .dynamic section. We fill in the
5783 values later, in ppc_elf_finish_dynamic_sections, but we
5784 must add the entries now so that we get the correct size for
5785 the .dynamic section. The DT_DEBUG entry is filled in by the
5786 dynamic linker and used by the debugger. */
5787#define add_dynamic_entry(TAG, VAL) \
5788 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 5789
25dbc73a 5790 if (info->executable)
7619e7c7 5791 {
25dbc73a
AM
5792 if (!add_dynamic_entry (DT_DEBUG, 0))
5793 return FALSE;
7619e7c7
AM
5794 }
5795
25dbc73a 5796 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 5797 {
25dbc73a
AM
5798 if (!add_dynamic_entry (DT_PLTGOT, 0)
5799 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5800 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5801 || !add_dynamic_entry (DT_JMPREL, 0))
5802 return FALSE;
5803 }
7619e7c7 5804
d7128ce4
AM
5805 if (htab->glink != NULL && htab->glink->size != 0)
5806 {
1fe44d79 5807 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4
AM
5808 return FALSE;
5809 }
5810
25dbc73a
AM
5811 if (relocs)
5812 {
5813 if (!add_dynamic_entry (DT_RELA, 0)
5814 || !add_dynamic_entry (DT_RELASZ, 0)
5815 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5816 return FALSE;
5817 }
7619e7c7 5818
25dbc73a
AM
5819 /* If any dynamic relocs apply to a read-only section, then we
5820 need a DT_TEXTREL entry. */
5821 if ((info->flags & DF_TEXTREL) == 0)
625af618 5822 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 5823 info);
7619e7c7 5824
25dbc73a
AM
5825 if ((info->flags & DF_TEXTREL) != 0)
5826 {
5827 if (!add_dynamic_entry (DT_TEXTREL, 0))
5828 return FALSE;
7619e7c7 5829 }
7a2b07ff
NS
5830 if (htab->is_vxworks
5831 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5832 return FALSE;
5833 }
25dbc73a
AM
5834#undef add_dynamic_entry
5835
7619e7c7
AM
5836 return TRUE;
5837}
0eb4a168
AM
5838
5839/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5840
5841static bfd_boolean
5842ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5843{
5844 if (h->plt.plist != NULL
5845 && !h->def_regular
5846 && (!h->pointer_equality_needed
5847 || !h->ref_regular_nonweak))
5848 return FALSE;
5849
5850 return _bfd_elf_hash_symbol (h);
5851}
25dbc73a
AM
5852\f
5853#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5854
5855static const int shared_stub_entry[] =
5856 {
5857 0x7c0802a6, /* mflr 0 */
5858 0x429f0005, /* bcl 20, 31, .Lxxx */
5859 0x7d6802a6, /* mflr 11 */
5860 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5861 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5862 0x7c0803a6, /* mtlr 0 */
5863 0x7d6903a6, /* mtctr 11 */
5864 0x4e800420, /* bctr */
5865 };
5866
5867static const int stub_entry[] =
5868 {
5869 0x3d600000, /* lis 11,xxx@ha */
5870 0x396b0000, /* addi 11,11,xxx@l */
5871 0x7d6903a6, /* mtctr 11 */
5872 0x4e800420, /* bctr */
5873 };
5874
5875static bfd_boolean
5876ppc_elf_relax_section (bfd *abfd,
5877 asection *isec,
5878 struct bfd_link_info *link_info,
5879 bfd_boolean *again)
5880{
5881 struct one_fixup
5882 {
5883 struct one_fixup *next;
5884 asection *tsec;
5885 bfd_vma toff;
5886 bfd_vma trampoff;
5887 };
7619e7c7 5888
25dbc73a
AM
5889 Elf_Internal_Shdr *symtab_hdr;
5890 bfd_byte *contents = NULL;
5891 Elf_Internal_Sym *isymbuf = NULL;
5892 Elf_Internal_Rela *internal_relocs = NULL;
5893 Elf_Internal_Rela *irel, *irelend;
5894 struct one_fixup *fixups = NULL;
9bc4e62b 5895 unsigned changes = 0;
d7128ce4 5896 struct ppc_elf_link_hash_table *htab;
25dbc73a 5897 bfd_size_type trampoff;
a6aa5195 5898 asection *got2;
7619e7c7 5899
25dbc73a 5900 *again = FALSE;
7619e7c7 5901
c87b5a93
AM
5902 /* Nothing to do if there are no relocations, and no need to do
5903 anything with non-alloc sections. */
5904 if ((isec->flags & SEC_ALLOC) == 0
5905 || (isec->flags & SEC_RELOC) == 0
5906 || isec->reloc_count == 0)
25dbc73a 5907 return TRUE;
7619e7c7 5908
c8a1f254
NS
5909 /* We cannot represent the required PIC relocs in the output, so don't
5910 do anything. The linker doesn't support mixing -shared and -r
5911 anyway. */
5912 if (link_info->relocatable && link_info->shared)
5913 return TRUE;
5914
25dbc73a
AM
5915 trampoff = (isec->size + 3) & (bfd_vma) -4;
5916 /* Space for a branch around any trampolines. */
5917 trampoff += 4;
7619e7c7 5918
0ffa91dd 5919 symtab_hdr = &elf_symtab_hdr (abfd);
7619e7c7 5920
25dbc73a
AM
5921 /* Get a copy of the native relocations. */
5922 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5923 link_info->keep_memory);
5924 if (internal_relocs == NULL)
5925 goto error_return;
7619e7c7 5926
d7128ce4 5927 htab = ppc_elf_hash_table (link_info);
a6aa5195 5928 got2 = bfd_get_section_by_name (abfd, ".got2");
7619e7c7 5929
a6aa5195 5930 irelend = internal_relocs + isec->reloc_count;
25dbc73a 5931 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 5932 {
25dbc73a
AM
5933 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5934 bfd_vma symaddr, reladdr, toff, roff;
5935 asection *tsec;
5936 struct one_fixup *f;
5937 size_t insn_offset = 0;
5938 bfd_vma max_branch_offset, val;
5939 bfd_byte *hit_addr;
5940 unsigned long t0;
5941 unsigned char sym_type;
7619e7c7 5942
25dbc73a
AM
5943 switch (r_type)
5944 {
5945 case R_PPC_REL24:
5946 case R_PPC_LOCAL24PC:
5947 case R_PPC_PLTREL24:
5948 max_branch_offset = 1 << 25;
5949 break;
7619e7c7 5950
25dbc73a
AM
5951 case R_PPC_REL14:
5952 case R_PPC_REL14_BRTAKEN:
5953 case R_PPC_REL14_BRNTAKEN:
5954 max_branch_offset = 1 << 15;
5955 break;
7619e7c7 5956
25dbc73a
AM
5957 default:
5958 continue;
5959 }
7619e7c7 5960
25dbc73a
AM
5961 /* Get the value of the symbol referred to by the reloc. */
5962 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5963 {
5964 /* A local symbol. */
5965 Elf_Internal_Sym *isym;
7fce784e 5966
25dbc73a
AM
5967 /* Read this BFD's local symbols. */
5968 if (isymbuf == NULL)
5969 {
5970 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5971 if (isymbuf == NULL)
5972 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5973 symtab_hdr->sh_info, 0,
5974 NULL, NULL, NULL);
5975 if (isymbuf == 0)
5976 goto error_return;
5977 }
5978 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5979 if (isym->st_shndx == SHN_UNDEF)
c8a1f254 5980 tsec = bfd_und_section_ptr;
25dbc73a
AM
5981 else if (isym->st_shndx == SHN_ABS)
5982 tsec = bfd_abs_section_ptr;
5983 else if (isym->st_shndx == SHN_COMMON)
5984 tsec = bfd_com_section_ptr;
5985 else
5986 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 5987
25dbc73a
AM
5988 toff = isym->st_value;
5989 sym_type = ELF_ST_TYPE (isym->st_info);
5990 }
5991 else
5992 {
5993 /* Global symbol handling. */
5994 unsigned long indx;
5995 struct elf_link_hash_entry *h;
7619e7c7 5996
25dbc73a
AM
5997 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5998 h = elf_sym_hashes (abfd)[indx];
7619e7c7 5999
25dbc73a
AM
6000 while (h->root.type == bfd_link_hash_indirect
6001 || h->root.type == bfd_link_hash_warning)
6002 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 6003
a6aa5195
AM
6004 tsec = NULL;
6005 toff = 0;
25dbc73a 6006 if (r_type == R_PPC_PLTREL24
a6aa5195 6007 && htab->plt != NULL)
25dbc73a 6008 {
3ec01793
AM
6009 struct plt_entry *ent = find_plt_ent (&h->plt.plist,
6010 got2, irel->r_addend);
a6aa5195
AM
6011
6012 if (ent != NULL)
d7128ce4 6013 {
4a3dc543 6014 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
6015 {
6016 tsec = htab->glink;
6017 toff = ent->glink_offset;
6018 }
6019 else
6020 {
6021 tsec = htab->plt;
6022 toff = ent->plt.offset;
6023 }
d7128ce4 6024 }
25dbc73a 6025 }
a6aa5195
AM
6026 if (tsec != NULL)
6027 ;
25dbc73a
AM
6028 else if (h->root.type == bfd_link_hash_defined
6029 || h->root.type == bfd_link_hash_defweak)
6030 {
6031 tsec = h->root.u.def.section;
6032 toff = h->root.u.def.value;
6033 }
c8a1f254
NS
6034 else if (h->root.type == bfd_link_hash_undefined
6035 || h->root.type == bfd_link_hash_undefweak)
6036 {
6037 tsec = bfd_und_section_ptr;
6038 toff = 0;
6039 }
25dbc73a
AM
6040 else
6041 continue;
7619e7c7 6042
25dbc73a
AM
6043 sym_type = h->type;
6044 }
7619e7c7 6045
25dbc73a
AM
6046 /* If the branch and target are in the same section, you have
6047 no hope of adding stubs. We'll error out later should the
6048 branch overflow. */
6049 if (tsec == isec)
6050 continue;
6051
6052 /* There probably isn't any reason to handle symbols in
6053 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6054 attribute for a code section, and we are only looking at
6055 branches. However, implement it correctly here as a
6056 reference for other target relax_section functions. */
6057 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6058 {
6059 /* At this stage in linking, no SEC_MERGE symbol has been
6060 adjusted, so all references to such symbols need to be
6061 passed through _bfd_merged_section_offset. (Later, in
6062 relocate_section, all SEC_MERGE symbols *except* for
6063 section symbols have been adjusted.)
6064
6065 gas may reduce relocations against symbols in SEC_MERGE
6066 sections to a relocation against the section symbol when
6067 the original addend was zero. When the reloc is against
6068 a section symbol we should include the addend in the
6069 offset passed to _bfd_merged_section_offset, since the
6070 location of interest is the original symbol. On the
6071 other hand, an access to "sym+addend" where "sym" is not
6072 a section symbol should not include the addend; Such an
6073 access is presumed to be an offset from "sym"; The
6074 location of interest is just "sym". */
6075 if (sym_type == STT_SECTION)
6076 toff += irel->r_addend;
7619e7c7 6077
25dbc73a
AM
6078 toff = _bfd_merged_section_offset (abfd, &tsec,
6079 elf_section_data (tsec)->sec_info,
6080 toff);
7619e7c7 6081
25dbc73a
AM
6082 if (sym_type != STT_SECTION)
6083 toff += irel->r_addend;
6084 }
a6aa5195
AM
6085 /* PLTREL24 addends are special. */
6086 else if (r_type != R_PPC_PLTREL24)
25dbc73a 6087 toff += irel->r_addend;
7619e7c7 6088
7de713b9
AM
6089 /* Attempted -shared link of non-pic code loses. */
6090 if (tsec->output_section == NULL)
6091 continue;
6092
25dbc73a 6093 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7619e7c7 6094
25dbc73a
AM
6095 roff = irel->r_offset;
6096 reladdr = isec->output_section->vma + isec->output_offset + roff;
7619e7c7 6097
25dbc73a 6098 /* If the branch is in range, no need to do anything. */
c8a1f254
NS
6099 if (tsec != bfd_und_section_ptr
6100 && (!link_info->relocatable
6101 /* A relocatable link may have sections moved during
6102 final link, so do not presume they remain in range. */
6103 || tsec->output_section == isec->output_section)
6104 && symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
25dbc73a 6105 continue;
252b5132 6106
25dbc73a
AM
6107 /* Look for an existing fixup to this address. */
6108 for (f = fixups; f ; f = f->next)
6109 if (f->tsec == tsec && f->toff == toff)
6110 break;
6111
6112 if (f == NULL)
7619e7c7 6113 {
25dbc73a
AM
6114 size_t size;
6115 unsigned long stub_rtype;
252b5132 6116
25dbc73a
AM
6117 val = trampoff - roff;
6118 if (val >= max_branch_offset)
6119 /* Oh dear, we can't reach a trampoline. Don't try to add
6120 one. We'll report an error later. */
6121 continue;
252b5132 6122
25dbc73a
AM
6123 if (link_info->shared)
6124 {
6125 size = 4 * ARRAY_SIZE (shared_stub_entry);
6126 insn_offset = 12;
6127 stub_rtype = R_PPC_RELAX32PC;
6128 }
6129 else
6130 {
6131 size = 4 * ARRAY_SIZE (stub_entry);
6132 insn_offset = 0;
6133 stub_rtype = R_PPC_RELAX32;
6134 }
dc810e39 6135
25dbc73a
AM
6136 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
6137 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
6138 abort ();
d7128ce4
AM
6139 if (tsec == htab->plt
6140 || tsec == htab->glink)
25dbc73a 6141 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
252b5132 6142
25dbc73a
AM
6143 /* Hijack the old relocation. Since we need two
6144 relocations for this use a "composite" reloc. */
6145 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6146 stub_rtype);
6147 irel->r_offset = trampoff + insn_offset;
e7d92e2e
AM
6148 if (r_type == R_PPC_PLTREL24)
6149 irel->r_addend = 0;
252b5132 6150
25dbc73a
AM
6151 /* Record the fixup so we don't do it again this section. */
6152 f = bfd_malloc (sizeof (*f));
6153 f->next = fixups;
6154 f->tsec = tsec;
6155 f->toff = toff;
6156 f->trampoff = trampoff;
6157 fixups = f;
252b5132 6158
25dbc73a 6159 trampoff += size;
9bc4e62b 6160 changes++;
25dbc73a
AM
6161 }
6162 else
6163 {
6164 val = f->trampoff - roff;
6165 if (val >= max_branch_offset)
6166 continue;
252b5132 6167
25dbc73a
AM
6168 /* Nop out the reloc, since we're finalizing things here. */
6169 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6170 }
252b5132 6171
25dbc73a
AM
6172 /* Get the section contents. */
6173 if (contents == NULL)
6174 {
6175 /* Get cached copy if it exists. */
6176 if (elf_section_data (isec)->this_hdr.contents != NULL)
6177 contents = elf_section_data (isec)->this_hdr.contents;
6178 else
6179 {
6180 /* Go get them off disk. */
6181 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6182 goto error_return;
6183 }
6184 }
252b5132 6185
25dbc73a
AM
6186 /* Fix up the existing branch to hit the trampoline. */
6187 hit_addr = contents + roff;
6188 switch (r_type)
6189 {
6190 case R_PPC_REL24:
6191 case R_PPC_LOCAL24PC:
6192 case R_PPC_PLTREL24:
6193 t0 = bfd_get_32 (abfd, hit_addr);
6194 t0 &= ~0x3fffffc;
6195 t0 |= val & 0x3fffffc;
6196 bfd_put_32 (abfd, t0, hit_addr);
6197 break;
252b5132 6198
25dbc73a
AM
6199 case R_PPC_REL14:
6200 case R_PPC_REL14_BRTAKEN:
6201 case R_PPC_REL14_BRNTAKEN:
6202 t0 = bfd_get_32 (abfd, hit_addr);
6203 t0 &= ~0xfffc;
6204 t0 |= val & 0xfffc;
6205 bfd_put_32 (abfd, t0, hit_addr);
6206 break;
6207 }
6208 }
252b5132 6209
25dbc73a 6210 /* Write out the trampolines. */
25dbc73a
AM
6211 if (fixups != NULL)
6212 {
6213 const int *stub;
6214 bfd_byte *dest;
6215 bfd_vma val;
6216 int i, size;
252b5132 6217
25dbc73a
AM
6218 do
6219 {
6220 struct one_fixup *f = fixups;
6221 fixups = fixups->next;
6222 free (f);
6223 }
6224 while (fixups);
252b5132 6225
515ef31d 6226 contents = bfd_realloc_or_free (contents, trampoff);
25dbc73a
AM
6227 if (contents == NULL)
6228 goto error_return;
252b5132 6229
25dbc73a
AM
6230 isec->size = (isec->size + 3) & (bfd_vma) -4;
6231 /* Branch around the trampolines. */
e7d92e2e 6232 val = B + trampoff - isec->size;
25dbc73a
AM
6233 dest = contents + isec->size;
6234 isec->size = trampoff;
6235 bfd_put_32 (abfd, val, dest);
6236 dest += 4;
252b5132 6237
25dbc73a
AM
6238 if (link_info->shared)
6239 {
6240 stub = shared_stub_entry;
6241 size = ARRAY_SIZE (shared_stub_entry);
6242 }
6243 else
6244 {
6245 stub = stub_entry;
6246 size = ARRAY_SIZE (stub_entry);
6247 }
252b5132 6248
25dbc73a
AM
6249 i = 0;
6250 while (dest < contents + trampoff)
252b5132 6251 {
25dbc73a
AM
6252 bfd_put_32 (abfd, stub[i], dest);
6253 i++;
6254 if (i == size)
6255 i = 0;
6256 dest += 4;
252b5132 6257 }
25dbc73a 6258 BFD_ASSERT (i == 0);
252b5132
RH
6259 }
6260
25dbc73a
AM
6261 if (isymbuf != NULL
6262 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 6263 {
25dbc73a
AM
6264 if (! link_info->keep_memory)
6265 free (isymbuf);
252b5132 6266 else
25dbc73a
AM
6267 {
6268 /* Cache the symbols for elf_link_input_bfd. */
6269 symtab_hdr->contents = (unsigned char *) isymbuf;
6270 }
252b5132
RH
6271 }
6272
25dbc73a
AM
6273 if (contents != NULL
6274 && elf_section_data (isec)->this_hdr.contents != contents)
6275 {
9bc4e62b 6276 if (!changes && !link_info->keep_memory)
25dbc73a
AM
6277 free (contents);
6278 else
6279 {
6280 /* Cache the section contents for elf_link_input_bfd. */
6281 elf_section_data (isec)->this_hdr.contents = contents;
6282 }
6283 }
252b5132 6284
9bc4e62b 6285 if (changes != 0)
25dbc73a 6286 {
9bc4e62b
NS
6287 /* Append sufficient NOP relocs so we can write out relocation
6288 information for the trampolines. */
6289 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6290 * sizeof (*new_relocs));
6291 unsigned ix;
6292
6293 if (!new_relocs)
6294 goto error_return;
6295 memcpy (new_relocs, internal_relocs,
6296 isec->reloc_count * sizeof (*new_relocs));
6297 for (ix = changes; ix--;)
6298 {
6299 irel = new_relocs + ix + isec->reloc_count;
6300
6301 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6302 }
6303 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 6304 free (internal_relocs);
9bc4e62b
NS
6305 elf_section_data (isec)->relocs = new_relocs;
6306 isec->reloc_count += changes;
6307 elf_section_data (isec)->rel_hdr.sh_size
6308 += changes * elf_section_data (isec)->rel_hdr.sh_entsize;
25dbc73a 6309 }
9bc4e62b
NS
6310 else if (elf_section_data (isec)->relocs != internal_relocs)
6311 free (internal_relocs);
252b5132 6312
9bc4e62b 6313 *again = changes != 0;
c8a1f254
NS
6314 if (!*again && link_info->relocatable)
6315 {
6316 /* Convert the internal relax relocs to external form. */
6317 for (irel = internal_relocs; irel < irelend; irel++)
6318 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX32)
6319 {
6320 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6321
6322 /* Rewrite the reloc and convert one of the trailing nop
6323 relocs to describe this relocation. */
6324 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6325 /* The relocs are at the bottom 2 bytes */
6326 irel[0].r_offset += 2;
6327 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6328 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6329 irel[1].r_offset += 4;
6330 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6331 irel++;
6332 }
6333 }
6334
b34976b6 6335 return TRUE;
25dbc73a
AM
6336
6337 error_return:
6338 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6339 free (isymbuf);
6340 if (contents != NULL
6341 && elf_section_data (isec)->this_hdr.contents != contents)
6342 free (contents);
6343 if (internal_relocs != NULL
6344 && elf_section_data (isec)->relocs != internal_relocs)
6345 free (internal_relocs);
6346 return FALSE;
252b5132 6347}
252b5132 6348\f
8a696751
AM
6349/* What to do when ld finds relocations against symbols defined in
6350 discarded sections. */
6351
6352static unsigned int
6353ppc_elf_action_discarded (asection *sec)
6354{
6355 if (strcmp (".fixup", sec->name) == 0)
6356 return 0;
6357
6358 if (strcmp (".got2", sec->name) == 0)
6359 return 0;
6360
6361 return _bfd_elf_default_action_discarded (sec);
6362}
c9a2f333 6363\f
25dbc73a 6364/* Fill in the address for a pointer generated in a linker section. */
252b5132 6365
25dbc73a 6366static bfd_vma
76750a2f 6367elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
6368 elf_linker_section_t *lsect,
6369 struct elf_link_hash_entry *h,
6370 bfd_vma relocation,
2bb04cf2 6371 const Elf_Internal_Rela *rel)
25dbc73a
AM
6372{
6373 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 6374
25dbc73a 6375 BFD_ASSERT (lsect != NULL);
252b5132 6376
25dbc73a 6377 if (h != NULL)
252b5132 6378 {
25dbc73a
AM
6379 /* Handle global symbol. */
6380 struct ppc_elf_link_hash_entry *eh;
252b5132 6381
25dbc73a 6382 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
6383 BFD_ASSERT (eh->elf.def_regular);
6384 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
6385 }
6386 else
6387 {
6388 /* Handle local symbol. */
6389 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 6390
0c8d6e5c 6391 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 6392 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
6393 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6394 }
252b5132 6395
76750a2f
AM
6396 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6397 rel->r_addend,
6398 lsect);
6399 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 6400
76750a2f
AM
6401 /* Offset will always be a multiple of four, so use the bottom bit
6402 as a "written" flag. */
6403 if ((linker_section_ptr->offset & 1) == 0)
6404 {
6405 bfd_put_32 (lsect->section->owner,
6406 relocation + linker_section_ptr->addend,
6407 lsect->section->contents + linker_section_ptr->offset);
6408 linker_section_ptr->offset += 1;
252b5132
RH
6409 }
6410
25dbc73a 6411 relocation = (lsect->section->output_offset
76750a2f 6412 + linker_section_ptr->offset - 1
c9a2f333 6413 - 0x8000);
252b5132 6414
25dbc73a
AM
6415#ifdef DEBUG
6416 fprintf (stderr,
6417 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6418 lsect->name, (long) relocation, (long) relocation);
6419#endif
252b5132 6420
25dbc73a
AM
6421 /* Subtract out the addend, because it will get added back in by the normal
6422 processing. */
6423 return relocation - linker_section_ptr->addend;
252b5132 6424}
25dbc73a 6425
e054468f
AM
6426#define PPC_LO(v) ((v) & 0xffff)
6427#define PPC_HI(v) (((v) >> 16) & 0xffff)
6428#define PPC_HA(v) PPC_HI ((v) + 0x8000)
6429
6430static void
6431write_glink_stub (struct plt_entry *ent, asection *plt_sec,
6432 struct bfd_link_info *info)
6433{
6434 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6435 bfd *output_bfd = info->output_bfd;
6436 bfd_vma plt;
6437 unsigned char *p;
6438
6439 plt = ((ent->plt.offset & ~1)
6440 + plt_sec->output_section->vma
6441 + plt_sec->output_offset);
6442 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6443
6444 if (info->shared || info->pie)
6445 {
6446 bfd_vma got = 0;
6447
6448 if (ent->addend >= 32768)
6449 got = (ent->addend
6450 + ent->sec->output_section->vma
6451 + ent->sec->output_offset);
6452 else if (htab->elf.hgot != NULL)
6453 got = SYM_VAL (htab->elf.hgot);
6454
6455 plt -= got;
6456
6457 if (plt + 0x8000 < 0x10000)
6458 {
6459 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6460 p += 4;
6461 bfd_put_32 (output_bfd, MTCTR_11, p);
6462 p += 4;
6463 bfd_put_32 (output_bfd, BCTR, p);
6464 p += 4;
6465 bfd_put_32 (output_bfd, NOP, p);
6466 p += 4;
6467 }
6468 else
6469 {
6470 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6471 p += 4;
6472 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6473 p += 4;
6474 bfd_put_32 (output_bfd, MTCTR_11, p);
6475 p += 4;
6476 bfd_put_32 (output_bfd, BCTR, p);
6477 p += 4;
6478 }
6479 }
6480 else
6481 {
6482 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6483 p += 4;
6484 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6485 p += 4;
6486 bfd_put_32 (output_bfd, MTCTR_11, p);
6487 p += 4;
6488 bfd_put_32 (output_bfd, BCTR, p);
6489 p += 4;
6490 }
6491}
6492
252b5132
RH
6493/* The RELOCATE_SECTION function is called by the ELF backend linker
6494 to handle the relocations for a section.
6495
6496 The relocs are always passed as Rela structures; if the section
6497 actually uses Rel structures, the r_addend field will always be
6498 zero.
6499
6500 This function is responsible for adjust the section contents as
6501 necessary, and (if using Rela relocs and generating a
1049f94e 6502 relocatable output file) adjusting the reloc addend as
252b5132
RH
6503 necessary.
6504
6505 This function does not have to worry about setting the reloc
6506 address or the reloc symbol index.
6507
6508 LOCAL_SYMS is a pointer to the swapped in local symbols.
6509
6510 LOCAL_SECTIONS is an array giving the section in the input file
6511 corresponding to the st_shndx field of each local symbol.
6512
6513 The global hash table entry for the global symbols can be found
6514 via elf_sym_hashes (input_bfd).
6515
1049f94e 6516 When generating relocatable output, this function must handle
252b5132
RH
6517 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6518 going to be the section symbol corresponding to the output
6519 section, which means that the addend must be adjusted
6520 accordingly. */
6521
b34976b6 6522static bfd_boolean
55fd94b0
AM
6523ppc_elf_relocate_section (bfd *output_bfd,
6524 struct bfd_link_info *info,
6525 bfd *input_bfd,
6526 asection *input_section,
6527 bfd_byte *contents,
6528 Elf_Internal_Rela *relocs,
6529 Elf_Internal_Sym *local_syms,
6530 asection **local_sections)
252b5132 6531{
7619e7c7
AM
6532 Elf_Internal_Shdr *symtab_hdr;
6533 struct elf_link_hash_entry **sym_hashes;
6534 struct ppc_elf_link_hash_table *htab;
6535 Elf_Internal_Rela *rel;
6536 Elf_Internal_Rela *relend;
6537 Elf_Internal_Rela outrel;
6538 bfd_byte *loc;
a6aa5195 6539 asection *got2, *sreloc = NULL;
252b5132 6540 bfd_vma *local_got_offsets;
b34976b6 6541 bfd_boolean ret = TRUE;
4fe5ca5b 6542 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 6543 bfd_boolean is_vxworks_tls;
b34976b6 6544
252b5132 6545#ifdef DEBUG
d003868e
AM
6546 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6547 "%ld relocations%s",
6548 input_bfd, input_section,
6549 (long) input_section->reloc_count,
6550 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH
6551#endif
6552
a6aa5195
AM
6553 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6554
e47cd125 6555 /* Initialize howto table if not already done. */
8da6118f 6556 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
6557 ppc_elf_howto_init ();
6558
7619e7c7 6559 htab = ppc_elf_hash_table (info);
252b5132 6560 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 6561 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 6562 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
6563 /* We have to handle relocations in vxworks .tls_vars sections
6564 specially, because the dynamic loader is 'weird'. */
6565 is_vxworks_tls = (htab->is_vxworks && info->shared
6566 && !strcmp (input_section->output_section->name,
6567 ".tls_vars"));
7619e7c7
AM
6568 rel = relocs;
6569 relend = relocs + input_section->reloc_count;
252b5132
RH
6570 for (; rel < relend; rel++)
6571 {
7619e7c7
AM
6572 enum elf_ppc_reloc_type r_type;
6573 bfd_vma addend;
6574 bfd_reloc_status_type r;
6575 Elf_Internal_Sym *sym;
6576 asection *sec;
6577 struct elf_link_hash_entry *h;
6578 const char *sym_name;
252b5132
RH
6579 reloc_howto_type *howto;
6580 unsigned long r_symndx;
6581 bfd_vma relocation;
7619e7c7 6582 bfd_vma branch_bit, insn, from;
7619e7c7
AM
6583 bfd_boolean unresolved_reloc;
6584 bfd_boolean warned;
6585 unsigned int tls_type, tls_mask, tls_gd;
e054468f 6586 struct plt_entry **ifunc;
7619e7c7 6587
55fd94b0
AM
6588 r_type = ELF32_R_TYPE (rel->r_info);
6589 sym = NULL;
6590 sec = NULL;
6591 h = NULL;
7619e7c7
AM
6592 unresolved_reloc = FALSE;
6593 warned = FALSE;
252b5132 6594 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 6595
252b5132
RH
6596 if (r_symndx < symtab_hdr->sh_info)
6597 {
6598 sym = local_syms + r_symndx;
6599 sec = local_sections[r_symndx];
26c61ae5 6600 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 6601
8517fae7 6602 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
6603 }
6604 else
6605 {
b2a8e766
AM
6606 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6607 r_symndx, symtab_hdr, sym_hashes,
6608 h, sec, relocation,
6609 unresolved_reloc, warned);
9abc968f 6610
252b5132 6611 sym_name = h->root.root.string;
7619e7c7
AM
6612 }
6613
ab96bf03
AM
6614 if (sec != NULL && elf_discarded_section (sec))
6615 {
6616 /* For relocs against symbols from removed linkonce sections,
6617 or sections discarded by a linker script, we just want the
6618 section contents zeroed. Avoid any special processing. */
6619 howto = NULL;
6620 if (r_type < R_PPC_max)
6621 howto = ppc_elf_howto_table[r_type];
6622 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6623 rel->r_info = 0;
6624 rel->r_addend = 0;
6625 continue;
6626 }
6627
6628 if (info->relocatable)
6629 {
6630 if (got2 != NULL
6631 && r_type == R_PPC_PLTREL24
6632 && rel->r_addend >= 32768)
6633 {
6634 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6635 addend specifies the GOT pointer offset within .got2. */
6636 rel->r_addend += got2->output_offset;
6637 }
6638 continue;
6639 }
6640
7619e7c7
AM
6641 /* TLS optimizations. Replace instruction sequences and relocs
6642 based on information we collected in tls_optimize. We edit
6643 RELOCS so that --emit-relocs will output something sensible
6644 for the final instruction stream. */
6645 tls_mask = 0;
6646 tls_gd = 0;
727fc41e
AM
6647 if (h != NULL)
6648 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6649 else if (local_got_offsets != NULL)
7619e7c7 6650 {
e054468f 6651 struct plt_entry **local_plt;
727fc41e 6652 char *lgot_masks;
e054468f
AM
6653 local_plt
6654 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6655 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
727fc41e 6656 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM
6657 }
6658
6659 /* Ensure reloc mapping code below stays sane. */
6660 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6661 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6662 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6663 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6664 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6665 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6666 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6667 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6668 abort ();
6669 switch (r_type)
6670 {
6671 default:
6672 break;
6673
6674 case R_PPC_GOT_TPREL16:
6675 case R_PPC_GOT_TPREL16_LO:
e054468f 6676 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
6677 && (tls_mask & TLS_TPREL) == 0)
6678 {
6679 bfd_vma insn;
4fe5ca5b 6680 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7619e7c7
AM
6681 insn &= 31 << 21;
6682 insn |= 0x3c020000; /* addis 0,2,0 */
4fe5ca5b 6683 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7619e7c7
AM
6684 r_type = R_PPC_TPREL16_HA;
6685 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6686 }
6687 break;
6688
6689 case R_PPC_TLS:
e054468f 6690 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
6691 && (tls_mask & TLS_TPREL) == 0)
6692 {
6693 bfd_vma insn, rtra;
6694 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6695 if ((insn & ((31 << 26) | (31 << 11)))
6696 == ((31 << 26) | (2 << 11)))
6697 rtra = insn & ((1 << 26) - (1 << 16));
6698 else if ((insn & ((31 << 26) | (31 << 16)))
6699 == ((31 << 26) | (2 << 16)))
6700 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6701 else
6702 abort ();
6703 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6704 /* add -> addi. */
6705 insn = 14 << 26;
6706 else if ((insn & (31 << 1)) == 23 << 1
6707 && ((insn & (31 << 6)) < 14 << 6
6708 || ((insn & (31 << 6)) >= 16 << 6
6709 && (insn & (31 << 6)) < 24 << 6)))
6710 /* load and store indexed -> dform. */
6711 insn = (32 | ((insn >> 6) & 31)) << 26;
6712 else if ((insn & (31 << 1)) == 21 << 1
6713 && (insn & (0x1a << 6)) == 0)
6714 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6715 insn = (((58 | ((insn >> 6) & 4)) << 26)
6716 | ((insn >> 6) & 1));
6717 else if ((insn & (31 << 1)) == 21 << 1
6718 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6719 /* lwax -> lwa. */
6720 insn = (58 << 26) | 2;
6721 else
6722 abort ();
6723 insn |= rtra;
6724 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6725 r_type = R_PPC_TPREL16_LO;
6726 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 6727
7619e7c7 6728 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
6729 PPC_TPREL16_LO which is at low-order half-word. */
6730 rel->r_offset += d_offset;
7619e7c7
AM
6731 }
6732 break;
6733
6734 case R_PPC_GOT_TLSGD16_HI:
6735 case R_PPC_GOT_TLSGD16_HA:
6736 tls_gd = TLS_TPRELGD;
e054468f 6737 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7619e7c7
AM
6738 goto tls_gdld_hi;
6739 break;
6740
6741 case R_PPC_GOT_TLSLD16_HI:
6742 case R_PPC_GOT_TLSLD16_HA:
e054468f 6743 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7
AM
6744 {
6745 tls_gdld_hi:
6746 if ((tls_mask & tls_gd) != 0)
6747 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6748 + R_PPC_GOT_TPREL16);
6749 else
6750 {
6751 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 6752 rel->r_offset -= d_offset;
7619e7c7
AM
6753 r_type = R_PPC_NONE;
6754 }
6755 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6756 }
6757 break;
6758
6759 case R_PPC_GOT_TLSGD16:
6760 case R_PPC_GOT_TLSGD16_LO:
6761 tls_gd = TLS_TPRELGD;
e054468f 6762 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 6763 goto tls_ldgd_opt;
7619e7c7
AM
6764 break;
6765
6766 case R_PPC_GOT_TLSLD16:
6767 case R_PPC_GOT_TLSLD16_LO:
e054468f 6768 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7 6769 {
3a71aa26 6770 unsigned int insn1, insn2;
b7fcf6f6 6771 bfd_vma offset;
7619e7c7 6772
b7fcf6f6 6773 tls_ldgd_opt:
727fc41e
AM
6774 offset = (bfd_vma) -1;
6775 /* If not using the newer R_PPC_TLSGD/LD to mark
6776 __tls_get_addr calls, we must trust that the call
6777 stays with its arg setup insns, ie. that the next
6778 reloc is the __tls_get_addr call associated with
6779 the current reloc. Edit both insns. */
6780 if (input_section->has_tls_get_addr_call
6781 && rel + 1 < relend
6782 && branch_reloc_hash_match (input_bfd, rel + 1,
6783 htab->tls_get_addr))
6784 offset = rel[1].r_offset;
b7fcf6f6
AM
6785 if ((tls_mask & tls_gd) != 0)
6786 {
6787 /* IE */
3a71aa26
AM
6788 insn1 = bfd_get_32 (output_bfd,
6789 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
6790 insn1 &= (1 << 26) - 1;
6791 insn1 |= 32 << 26; /* lwz */
727fc41e
AM
6792 if (offset != (bfd_vma) -1)
6793 {
6794 rel[1].r_info
6795 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6796 R_PPC_NONE);
6797 insn2 = 0x7c631214; /* add 3,3,2 */
6798 bfd_put_32 (output_bfd, insn2, contents + offset);
6799 }
b7fcf6f6
AM
6800 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6801 + R_PPC_GOT_TPREL16);
6802 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6803 }
6804 else
6805 {
6806 /* LE */
6807 insn1 = 0x3c620000; /* addis 3,2,0 */
7619e7c7
AM
6808 if (tls_gd == 0)
6809 {
b7fcf6f6 6810 /* Was an LD reloc. */
1d483afe
AM
6811 for (r_symndx = 0;
6812 r_symndx < symtab_hdr->sh_info;
6813 r_symndx++)
6814 if (local_sections[r_symndx] == sec)
6815 break;
6816 if (r_symndx >= symtab_hdr->sh_info)
6817 r_symndx = 0;
b7fcf6f6 6818 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
1d483afe
AM
6819 if (r_symndx != 0)
6820 rel->r_addend -= (local_syms[r_symndx].st_value
6821 + sec->output_offset
6822 + sec->output_section->vma);
7619e7c7 6823 }
b7fcf6f6
AM
6824 r_type = R_PPC_TPREL16_HA;
6825 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM
6826 if (offset != (bfd_vma) -1)
6827 {
6828 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6829 rel[1].r_offset = offset + d_offset;
6830 rel[1].r_addend = rel->r_addend;
6831 insn2 = 0x38630000; /* addi 3,3,0 */
6832 bfd_put_32 (output_bfd, insn2, contents + offset);
6833 }
b7fcf6f6
AM
6834 }
6835 bfd_put_32 (output_bfd, insn1,
6836 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
6837 if (tls_gd == 0)
6838 {
6839 /* We changed the symbol on an LD reloc. Start over
6840 in order to get h, sym, sec etc. right. */
6841 rel--;
6842 continue;
7619e7c7 6843 }
252b5132 6844 }
7619e7c7 6845 break;
727fc41e
AM
6846
6847 case R_PPC_TLSGD:
e054468f 6848 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
727fc41e
AM
6849 {
6850 unsigned int insn2;
6851 bfd_vma offset = rel->r_offset;
6852
6853 if ((tls_mask & TLS_TPRELGD) != 0)
6854 {
6855 /* IE */
6856 r_type = R_PPC_NONE;
6857 insn2 = 0x7c631214; /* add 3,3,2 */
6858 }
6859 else
6860 {
6861 /* LE */
6862 r_type = R_PPC_TPREL16_LO;
6863 rel->r_offset += d_offset;
6864 insn2 = 0x38630000; /* addi 3,3,0 */
6865 }
6866 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6867 bfd_put_32 (output_bfd, insn2, contents + offset);
6868 /* Zap the reloc on the _tls_get_addr call too. */
6869 BFD_ASSERT (offset == rel[1].r_offset);
6870 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6871 R_PPC_NONE);
6872 }
6873 break;
6874
6875 case R_PPC_TLSLD:
e054468f 6876 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
727fc41e
AM
6877 {
6878 unsigned int insn2;
6879
6880 for (r_symndx = 0;
6881 r_symndx < symtab_hdr->sh_info;
6882 r_symndx++)
6883 if (local_sections[r_symndx] == sec)
6884 break;
6885 if (r_symndx >= symtab_hdr->sh_info)
6886 r_symndx = 0;
6887 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6888 if (r_symndx != 0)
6889 rel->r_addend -= (local_syms[r_symndx].st_value
6890 + sec->output_offset
6891 + sec->output_section->vma);
6892
6893 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6894 rel->r_offset += d_offset;
6895 insn2 = 0x38630000; /* addi 3,3,0 */
6896 bfd_put_32 (output_bfd, insn2,
6897 contents + rel->r_offset - d_offset);
6898 /* Zap the reloc on the _tls_get_addr call too. */
6899 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
6900 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6901 R_PPC_NONE);
6902 rel--;
6903 continue;
6904 }
6905 break;
7619e7c7
AM
6906 }
6907
6908 /* Handle other relocations that tweak non-addend part of insn. */
6909 branch_bit = 0;
6910 switch (r_type)
6911 {
6912 default:
6913 break;
6914
6915 /* Branch taken prediction relocations. */
6916 case R_PPC_ADDR14_BRTAKEN:
6917 case R_PPC_REL14_BRTAKEN:
6918 branch_bit = BRANCH_PREDICT_BIT;
6919 /* Fall thru */
6920
4cc11e76 6921 /* Branch not taken prediction relocations. */
7619e7c7
AM
6922 case R_PPC_ADDR14_BRNTAKEN:
6923 case R_PPC_REL14_BRNTAKEN:
6924 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6925 insn &= ~BRANCH_PREDICT_BIT;
6926 insn |= branch_bit;
6927
6928 from = (rel->r_offset
6929 + input_section->output_offset
6930 + input_section->output_section->vma);
6931
6932 /* Invert 'y' bit if not the default. */
6933 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6934 insn ^= BRANCH_PREDICT_BIT;
6935
6936 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6937 break;
252b5132
RH
6938 }
6939
e054468f 6940 ifunc = NULL;
25f23106 6941 if (!htab->is_vxworks)
e054468f
AM
6942 {
6943 if (h != NULL)
6944 {
6945 if (h->type == STT_GNU_IFUNC)
6946 ifunc = &h->plt.plist;
6947 }
6948 else if (local_got_offsets != NULL)
6949 {
6950 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
6951 {
6952 struct plt_entry **local_plt = (struct plt_entry **)
6953 (local_got_offsets + symtab_hdr->sh_info);
6954
6955 ifunc = local_plt + r_symndx;
6956 }
6957 }
25f23106 6958 if (ifunc != NULL && is_branch_reloc (r_type))
e054468f
AM
6959 {
6960 struct plt_entry *ent = find_plt_ent (ifunc, got2, rel->r_addend);
6961
6962 if (h == NULL && (ent->plt.offset & 1) == 0)
6963 {
6964 Elf_Internal_Rela rela;
6965 bfd_byte *loc;
6966
6967 rela.r_offset = (htab->iplt->output_section->vma
6968 + htab->iplt->output_offset
6969 + ent->plt.offset);
6970 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
6971 rela.r_addend = relocation;
25f23106
AM
6972 loc = htab->reliplt->contents;
6973 loc += (htab->reliplt->reloc_count++
6974 * sizeof (Elf32_External_Rela));
e054468f
AM
6975 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6976
6977 ent->plt.offset |= 1;
6978 }
6979 if (h == NULL && (ent->glink_offset & 1) == 0)
6980 {
6981 write_glink_stub (ent, htab->iplt, info);
6982 ent->glink_offset |= 1;
6983 }
6984
6985 unresolved_reloc = FALSE;
6986 if (htab->plt_type == PLT_NEW
6987 || !htab->elf.dynamic_sections_created
6988 || h == NULL)
6989 relocation = (htab->glink->output_section->vma
6990 + htab->glink->output_offset
6991 + (ent->glink_offset & ~1));
6992 else
6993 relocation = (htab->plt->output_section->vma
6994 + htab->plt->output_offset
6995 + ent->plt.offset);
6996 }
6997 }
6998
7619e7c7
AM
6999 addend = rel->r_addend;
7000 tls_type = 0;
7001 howto = NULL;
55fd94b0
AM
7002 if (r_type < R_PPC_max)
7003 howto = ppc_elf_howto_table[r_type];
7619e7c7 7004 switch (r_type)
252b5132
RH
7005 {
7006 default:
7619e7c7 7007 (*_bfd_error_handler)
d003868e
AM
7008 (_("%B: unknown relocation type %d for symbol %s"),
7009 input_bfd, (int) r_type, sym_name);
252b5132
RH
7010
7011 bfd_set_error (bfd_error_bad_value);
b34976b6 7012 ret = FALSE;
252b5132
RH
7013 continue;
7014
7619e7c7
AM
7015 case R_PPC_NONE:
7016 case R_PPC_TLS:
727fc41e
AM
7017 case R_PPC_TLSGD:
7018 case R_PPC_TLSLD:
7619e7c7
AM
7019 case R_PPC_EMB_MRKREF:
7020 case R_PPC_GNU_VTINHERIT:
7021 case R_PPC_GNU_VTENTRY:
7595d193
L
7022 continue;
7023
7619e7c7
AM
7024 /* GOT16 relocations. Like an ADDR16 using the symbol's
7025 address in the GOT as relocation value instead of the
7026 symbol's value itself. Also, create a GOT entry for the
7027 symbol and put the symbol value there. */
7028 case R_PPC_GOT_TLSGD16:
7029 case R_PPC_GOT_TLSGD16_LO:
7030 case R_PPC_GOT_TLSGD16_HI:
7031 case R_PPC_GOT_TLSGD16_HA:
7032 tls_type = TLS_TLS | TLS_GD;
7033 goto dogot;
7034
7035 case R_PPC_GOT_TLSLD16:
7036 case R_PPC_GOT_TLSLD16_LO:
7037 case R_PPC_GOT_TLSLD16_HI:
7038 case R_PPC_GOT_TLSLD16_HA:
7039 tls_type = TLS_TLS | TLS_LD;
7040 goto dogot;
7041
7042 case R_PPC_GOT_TPREL16:
7043 case R_PPC_GOT_TPREL16_LO:
7044 case R_PPC_GOT_TPREL16_HI:
7045 case R_PPC_GOT_TPREL16_HA:
7046 tls_type = TLS_TLS | TLS_TPREL;
7047 goto dogot;
7048
7049 case R_PPC_GOT_DTPREL16:
7050 case R_PPC_GOT_DTPREL16_LO:
7051 case R_PPC_GOT_DTPREL16_HI:
7052 case R_PPC_GOT_DTPREL16_HA:
7053 tls_type = TLS_TLS | TLS_DTPREL;
7054 goto dogot;
7055
7056 case R_PPC_GOT16:
7057 case R_PPC_GOT16_LO:
7058 case R_PPC_GOT16_HI:
7059 case R_PPC_GOT16_HA:
727fc41e 7060 tls_mask = 0;
7619e7c7
AM
7061 dogot:
7062 {
7063 /* Relocation is to the entry for this symbol in the global
7064 offset table. */
7065 bfd_vma off;
7066 bfd_vma *offp;
7067 unsigned long indx;
7068
7069 if (htab->got == NULL)
7070 abort ();
7071
7072 indx = 0;
7073 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 7074 && (h == NULL
f5385ebf 7075 || !h->def_dynamic))
7619e7c7
AM
7076 offp = &htab->tlsld_got.offset;
7077 else if (h != NULL)
7078 {
7079 bfd_boolean dyn;
7080 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 7081 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM
7082 || (info->shared
7083 && SYMBOL_REFERENCES_LOCAL (info, h)))
7084 /* This is actually a static link, or it is a
7085 -Bsymbolic link and the symbol is defined
7086 locally, or the symbol was forced to be local
7087 because of a version file. */
7088 ;
7089 else
7090 {
7091 indx = h->dynindx;
7092 unresolved_reloc = FALSE;
7093 }
7094 offp = &h->got.offset;
7095 }
7096 else
7097 {
7098 if (local_got_offsets == NULL)
7099 abort ();
7100 offp = &local_got_offsets[r_symndx];
7101 }
7102
7103 /* The offset must always be a multiple of 4. We use the
7104 least significant bit to record whether we have already
7105 processed this entry. */
7106 off = *offp;
7107 if ((off & 1) != 0)
7108 off &= ~1;
7109 else
7110 {
25f23106 7111 asection *rsec;
70bccea4
AM
7112 unsigned int tls_m = (tls_mask
7113 & (TLS_LD | TLS_GD | TLS_DTPREL
7114 | TLS_TPREL | TLS_TPRELGD));
7115
7116 if (offp == &htab->tlsld_got.offset)
7117 tls_m = TLS_LD;
7118 else if (h == NULL
f5385ebf 7119 || !h->def_dynamic)
70bccea4
AM
7120 tls_m &= ~TLS_LD;
7121
7122 /* We might have multiple got entries for this sym.
7123 Initialize them all. */
7124 do
7619e7c7 7125 {
70bccea4
AM
7126 int tls_ty = 0;
7127
7128 if ((tls_m & TLS_LD) != 0)
7619e7c7 7129 {
70bccea4
AM
7130 tls_ty = TLS_TLS | TLS_LD;
7131 tls_m &= ~TLS_LD;
7132 }
7133 else if ((tls_m & TLS_GD) != 0)
7134 {
7135 tls_ty = TLS_TLS | TLS_GD;
7136 tls_m &= ~TLS_GD;
7137 }
7138 else if ((tls_m & TLS_DTPREL) != 0)
7139 {
7140 tls_ty = TLS_TLS | TLS_DTPREL;
7141 tls_m &= ~TLS_DTPREL;
7142 }
7143 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7144 {
7145 tls_ty = TLS_TLS | TLS_TPREL;
7146 tls_m = 0;
7619e7c7 7147 }
7619e7c7 7148
70bccea4 7149 /* Generate relocs for the dynamic linker. */
25f23106 7150 rsec = NULL;
4e795f50 7151 if ((info->shared || indx != 0)
d6e14abc
AM
7152 && (offp == &htab->tlsld_got.offset
7153 || h == NULL
4e795f50
AM
7154 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7155 || h->root.type != bfd_link_hash_undefweak))
25f23106
AM
7156 rsec = htab->relgot;
7157 else if (ifunc != NULL)
7158 rsec = htab->reliplt;
7159 if (rsec != NULL)
7619e7c7 7160 {
70bccea4
AM
7161 outrel.r_offset = (htab->got->output_section->vma
7162 + htab->got->output_offset
7163 + off);
e515b051 7164 outrel.r_addend = 0;
70bccea4
AM
7165 if (tls_ty & (TLS_LD | TLS_GD))
7166 {
7167 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
7168 if (tls_ty == (TLS_TLS | TLS_GD))
7169 {
25f23106
AM
7170 loc = rsec->contents;
7171 loc += (rsec->reloc_count++
70bccea4
AM
7172 * sizeof (Elf32_External_Rela));
7173 bfd_elf32_swap_reloca_out (output_bfd,
7174 &outrel, loc);
e515b051 7175 outrel.r_offset += 4;
70bccea4
AM
7176 outrel.r_info
7177 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
7178 }
7179 }
7180 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7181 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7182 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7183 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
25f23106 7184 else if (indx != 0)
70bccea4 7185 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
25f23106
AM
7186 else if (ifunc != NULL)
7187 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7188 else
7189 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
d6e14abc 7190 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM
7191 {
7192 outrel.r_addend += relocation;
7193 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 7194 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 7195 }
25f23106
AM
7196 loc = rsec->contents;
7197 loc += (rsec->reloc_count++
70bccea4
AM
7198 * sizeof (Elf32_External_Rela));
7199 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
7200 }
7201
70bccea4
AM
7202 /* Init the .got section contents if we're not
7203 emitting a reloc. */
7204 else
7619e7c7 7205 {
70bccea4
AM
7206 bfd_vma value = relocation;
7207
7b609f53
AM
7208 if (tls_ty == (TLS_TLS | TLS_LD))
7209 value = 1;
7210 else if (tls_ty != 0)
70bccea4 7211 {
e1918d23 7212 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 7213 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 7214 value += DTP_OFFSET - TP_OFFSET;
70bccea4 7215
7b609f53
AM
7216 if (tls_ty == (TLS_TLS | TLS_GD))
7217 {
7218 bfd_put_32 (output_bfd, value,
7219 htab->got->contents + off + 4);
7220 value = 1;
7221 }
70bccea4 7222 }
70bccea4
AM
7223 bfd_put_32 (output_bfd, value,
7224 htab->got->contents + off);
7619e7c7 7225 }
70bccea4
AM
7226
7227 off += 4;
7228 if (tls_ty & (TLS_LD | TLS_GD))
7229 off += 4;
7619e7c7 7230 }
70bccea4
AM
7231 while (tls_m != 0);
7232
7233 off = *offp;
7234 *offp = off | 1;
7619e7c7
AM
7235 }
7236
7237 if (off >= (bfd_vma) -2)
7238 abort ();
7239
70bccea4
AM
7240 if ((tls_type & TLS_TLS) != 0)
7241 {
7242 if (tls_type != (TLS_TLS | TLS_LD))
7243 {
7244 if ((tls_mask & TLS_LD) != 0
7245 && !(h == NULL
f5385ebf 7246 || !h->def_dynamic))
70bccea4
AM
7247 off += 8;
7248 if (tls_type != (TLS_TLS | TLS_GD))
7249 {
7250 if ((tls_mask & TLS_GD) != 0)
7251 off += 8;
7252 if (tls_type != (TLS_TLS | TLS_DTPREL))
7253 {
7254 if ((tls_mask & TLS_DTPREL) != 0)
7255 off += 4;
7256 }
7257 }
7258 }
7259 }
7260
e87d4038
AM
7261 relocation = (htab->got->output_section->vma
7262 + htab->got->output_offset
7263 + off
7264 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
7265
7266 /* Addends on got relocations don't make much sense.
7267 x+off@got is actually x@got+off, and since the got is
7268 generated by a hash table traversal, the value in the
7269 got at entry m+n bears little relation to the entry m. */
7270 if (addend != 0)
7271 (*_bfd_error_handler)
d003868e
AM
7272 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
7273 input_bfd,
7274 input_section,
7619e7c7 7275 (long) rel->r_offset,
7b609f53 7276 howto->name,
7619e7c7
AM
7277 sym_name);
7278 }
70bccea4 7279 break;
7619e7c7 7280
252b5132 7281 /* Relocations that need no special processing. */
7619e7c7 7282 case R_PPC_LOCAL24PC:
252b5132
RH
7283 /* It makes no sense to point a local relocation
7284 at a symbol not in this object. */
7b609f53 7285 if (unresolved_reloc)
252b5132 7286 {
464e1740
ILT
7287 if (! (*info->callbacks->undefined_symbol) (info,
7288 h->root.root.string,
7289 input_bfd,
7290 input_section,
5cc7c785 7291 rel->r_offset,
b34976b6
AM
7292 TRUE))
7293 return FALSE;
252b5132
RH
7294 continue;
7295 }
7296 break;
7297
7619e7c7
AM
7298 case R_PPC_DTPREL16:
7299 case R_PPC_DTPREL16_LO:
7300 case R_PPC_DTPREL16_HI:
7301 case R_PPC_DTPREL16_HA:
e1918d23 7302 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
7303 break;
7304
70bccea4
AM
7305 /* Relocations that may need to be propagated if this is a shared
7306 object. */
7619e7c7
AM
7307 case R_PPC_TPREL16:
7308 case R_PPC_TPREL16_LO:
7309 case R_PPC_TPREL16_HI:
7310 case R_PPC_TPREL16_HA:
e1918d23 7311 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
7312 /* The TPREL16 relocs shouldn't really be used in shared
7313 libs as they will result in DT_TEXTREL being set, but
7314 support them anyway. */
7315 goto dodyn;
7316
7317 case R_PPC_TPREL32:
e1918d23 7318 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
7319 goto dodyn;
7320
7321 case R_PPC_DTPREL32:
e1918d23 7322 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
7323 goto dodyn;
7324
e515b051
AM
7325 case R_PPC_DTPMOD32:
7326 relocation = 1;
7327 addend = 0;
7328 goto dodyn;
7329
d7128ce4
AM
7330 case R_PPC_REL16:
7331 case R_PPC_REL16_LO:
7332 case R_PPC_REL16_HI:
7333 case R_PPC_REL16_HA:
7334 break;
7335
7619e7c7 7336 case R_PPC_REL32:
625af618
AM
7337 if (h == NULL || h == htab->elf.hgot)
7338 break;
7339 /* fall through */
7340
7341 case R_PPC_ADDR32:
7342 case R_PPC_ADDR16:
7343 case R_PPC_ADDR16_LO:
7344 case R_PPC_ADDR16_HI:
7345 case R_PPC_ADDR16_HA:
7346 case R_PPC_UADDR32:
7347 case R_PPC_UADDR16:
7348 goto dodyn;
7349
7350 case R_PPC_REL24:
7619e7c7
AM
7351 case R_PPC_REL14:
7352 case R_PPC_REL14_BRTAKEN:
7353 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
7354 /* If these relocations are not to a named symbol, they can be
7355 handled right here, no need to bother the dynamic linker. */
89200bf8 7356 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 7357 || h == htab->elf.hgot)
252b5132 7358 break;
70bccea4 7359 /* fall through */
252b5132 7360
7619e7c7 7361 case R_PPC_ADDR24:
7619e7c7
AM
7362 case R_PPC_ADDR14:
7363 case R_PPC_ADDR14_BRTAKEN:
7364 case R_PPC_ADDR14_BRNTAKEN:
625af618
AM
7365 if (h != NULL && !info->shared)
7366 break;
7367 /* fall through */
7368
7619e7c7 7369 dodyn:
3348747a
NS
7370 if ((input_section->flags & SEC_ALLOC) == 0
7371 || is_vxworks_tls)
c87b5a93 7372 break;
c87b5a93 7373
ee05f2fe 7374 if ((info->shared
89200bf8
AM
7375 && !(h != NULL
7376 && ((h->root.type == bfd_link_hash_undefined
7377 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7378 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7379 || (h->root.type == bfd_link_hash_undefweak
7380 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 7381 && (must_be_dyn_reloc (info, r_type)
f6c52c13 7382 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM
7383 || (ELIMINATE_COPY_RELOCS
7384 && !info->shared
ee05f2fe
AM
7385 && h != NULL
7386 && h->dynindx != -1
f5385ebf 7387 && !h->non_got_ref
25f23106
AM
7388 && !h->def_regular)
7389 || (!info->shared
7390 && ifunc != NULL))
252b5132 7391 {
0bb2d96a 7392 int skip;
252b5132
RH
7393
7394#ifdef DEBUG
55fd94b0
AM
7395 fprintf (stderr, "ppc_elf_relocate_section needs to "
7396 "create relocation for %s\n",
70bccea4
AM
7397 (h && h->root.root.string
7398 ? h->root.root.string : "<unknown>"));
252b5132
RH
7399#endif
7400
7401 /* When generating a shared object, these relocations
70bccea4
AM
7402 are copied into the output file to be resolved at run
7403 time. */
252b5132
RH
7404 if (sreloc == NULL)
7405 {
25f23106
AM
7406 sreloc = elf_section_data (input_section)->sreloc;
7407 if (!htab->elf.dynamic_sections_created)
7408 sreloc = htab->reliplt;
83bac4b0 7409 if (sreloc == NULL)
b34976b6 7410 return FALSE;
252b5132
RH
7411 }
7412
0bb2d96a 7413 skip = 0;
c629eae0
JJ
7414 outrel.r_offset =
7415 _bfd_elf_section_offset (output_bfd, info, input_section,
7416 rel->r_offset);
0bb2d96a
JJ
7417 if (outrel.r_offset == (bfd_vma) -1
7418 || outrel.r_offset == (bfd_vma) -2)
7419 skip = (int) outrel.r_offset;
252b5132
RH
7420 outrel.r_offset += (input_section->output_section->vma
7421 + input_section->output_offset);
7422
7423 if (skip)
7424 memset (&outrel, 0, sizeof outrel);
89200bf8
AM
7425 else if ((h != NULL
7426 && (h->root.type == bfd_link_hash_undefined
7427 || h->root.type == bfd_link_hash_undefweak))
7428 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 7429 {
7619e7c7 7430 unresolved_reloc = FALSE;
252b5132
RH
7431 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7432 outrel.r_addend = rel->r_addend;
7433 }
7434 else
7435 {
47388f4c
AM
7436 outrel.r_addend = relocation + rel->r_addend;
7437
25f23106 7438 if (r_type != R_PPC_ADDR32)
252b5132 7439 {
89200bf8 7440 long indx = 0;
252b5132 7441
25f23106
AM
7442 if (ifunc != NULL)
7443 {
7444 /* If we get here when building a static
7445 executable, then the libc startup function
7446 responsible for applying indirect function
7447 relocations is going to complain about
7448 the reloc type.
7449 If we get here when building a dynamic
7450 executable, it will be because we have
7451 a text relocation. The dynamic loader
7452 will set the text segment writable and
7453 non-executable to apply text relocations.
7454 So we'll segfault when trying to run the
7455 indirection function to resolve the reloc. */
7456 (*_bfd_error_handler)
7457 (_("%B(%A+0x%lx): relocation %s for indirect "
7458 "function %s unsupported"),
7459 input_bfd,
7460 input_section,
7461 (long) rel->r_offset,
7462 howto->name,
7463 sym_name);
7464 ret = FALSE;
7465 }
7466 else if (r_symndx == 0 || bfd_is_abs_section (sec))
89200bf8 7467 ;
252b5132
RH
7468 else if (sec == NULL || sec->owner == NULL)
7469 {
7470 bfd_set_error (bfd_error_bad_value);
89200bf8 7471 ret = FALSE;
252b5132
RH
7472 }
7473 else
7474 {
7475 asection *osec;
7476
47388f4c
AM
7477 /* We are turning this relocation into one
7478 against a section symbol. It would be
7479 proper to subtract the symbol's value,
7480 osec->vma, from the emitted reloc addend,
25f23106
AM
7481 but ld.so expects buggy relocs.
7482 FIXME: Why not always use a zero index? */
252b5132
RH
7483 osec = sec->output_section;
7484 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
7485 if (indx == 0)
7486 {
7487 osec = htab->elf.text_index_section;
7488 indx = elf_section_data (osec)->dynindx;
7489 }
7490 BFD_ASSERT (indx != 0);
252b5132 7491#ifdef DEBUG
74541ad4 7492 if (indx == 0)
e460dd0d 7493 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
7494 indx, osec->name, osec->flags,
7495 h->root.root.string);
252b5132
RH
7496#endif
7497 }
7498
7499 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132 7500 }
25f23106
AM
7501 else if (ifunc != NULL)
7502 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7503 else
7504 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
7505 }
7506
947216bf
AM
7507 loc = sreloc->contents;
7508 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7509 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 7510
2243deae 7511 if (skip == -1)
252b5132 7512 continue;
2243deae
L
7513
7514 /* This reloc will be computed at runtime. We clear the memory
7515 so that it contains predictable value. */
7516 if (! skip
7517 && ((input_section->flags & SEC_ALLOC) != 0
7518 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7519 {
7520 relocation = howto->pc_relative ? outrel.r_offset : 0;
7521 addend = 0;
7522 break;
7523 }
252b5132 7524 }
252b5132
RH
7525 break;
7526
b4a38de6
AM
7527 case R_PPC_RELAX32PC_PLT:
7528 case R_PPC_RELAX32_PLT:
a6aa5195 7529 {
3ec01793 7530 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2, addend);
a6aa5195 7531
4a3dc543 7532 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
7533 relocation = (htab->glink->output_section->vma
7534 + htab->glink->output_offset
7535 + ent->glink_offset);
7536 else
7537 relocation = (htab->plt->output_section->vma
7538 + htab->plt->output_offset
7539 + ent->plt.offset);
a6aa5195 7540 }
b4a38de6
AM
7541 if (r_type == R_PPC_RELAX32_PLT)
7542 goto relax32;
7543 /* Fall thru */
7544
f31a141e
AM
7545 case R_PPC_RELAX32PC:
7546 relocation -= (input_section->output_section->vma
7547 + input_section->output_offset
7548 + rel->r_offset - 4);
7549 /* Fall thru */
b4a38de6 7550
deaaf2f3 7551 case R_PPC_RELAX32:
b4a38de6 7552 relax32:
9abc968f
AM
7553 {
7554 unsigned long t0;
7555 unsigned long t1;
7556
7557 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7558 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7559
7560 /* We're clearing the bits for R_PPC_ADDR16_HA
7561 and R_PPC_ADDR16_LO here. */
7562 t0 &= ~0xffff;
7563 t1 &= ~0xffff;
7564
7565 /* t0 is HA, t1 is LO */
7566 relocation += addend;
7567 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7568 t1 |= relocation & 0xffff;
7569
7570 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7571 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
9bc4e62b
NS
7572
7573 /* Rewrite the reloc and convert one of the trailing nop
7574 relocs to describe this relocation. */
7575 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7576 /* The relocs are at the bottom 2 bytes */
7577 rel[0].r_offset += 2;
7578 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7579 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7580 rel[1].r_offset += 4;
7581 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7582 rel++;
9abc968f 7583 }
8517fae7 7584 continue;
deaaf2f3 7585
70bccea4 7586 /* Indirect .sdata relocation. */
7619e7c7 7587 case R_PPC_EMB_SDAI16:
c9a2f333 7588 BFD_ASSERT (htab->sdata[0].section != NULL);
7619e7c7 7589 relocation
76750a2f
AM
7590 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7591 h, relocation, rel);
252b5132
RH
7592 break;
7593
70bccea4 7594 /* Indirect .sdata2 relocation. */
7619e7c7 7595 case R_PPC_EMB_SDA2I16:
c9a2f333 7596 BFD_ASSERT (htab->sdata[1].section != NULL);
7619e7c7 7597 relocation
76750a2f
AM
7598 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7599 h, relocation, rel);
252b5132
RH
7600 break;
7601
70bccea4
AM
7602 /* Handle the TOC16 reloc. We want to use the offset within the .got
7603 section, not the actual VMA. This is appropriate when generating
7604 an embedded ELF object, for which the .got section acts like the
7605 AIX .toc section. */
7619e7c7 7606 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
7607 if (sec == NULL || sec->output_section == NULL)
7608 {
7609 unresolved_reloc = TRUE;
7610 break;
7611 }
7612 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
f12123c0 7613 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
252b5132 7614
3b4f3a11 7615 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
7616 break;
7617
7619e7c7 7618 case R_PPC_PLTREL24:
e054468f 7619 if (h == NULL || ifunc != NULL)
6d78d0b9 7620 break;
252b5132 7621 /* Relocation is to the entry for this symbol in the
70bccea4 7622 procedure linkage table. */
a6aa5195 7623 {
3ec01793 7624 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2, addend);
252b5132 7625
a6aa5195
AM
7626 addend = 0;
7627 if (ent == NULL
7628 || htab->plt == NULL)
7629 {
7630 /* We didn't make a PLT entry for this symbol. This
7631 happens when statically linking PIC code, or when
7632 using -Bsymbolic. */
7633 break;
7634 }
252b5132 7635
a6aa5195 7636 unresolved_reloc = FALSE;
4a3dc543 7637 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
7638 relocation = (htab->glink->output_section->vma
7639 + htab->glink->output_offset
7640 + ent->glink_offset);
7641 else
7642 relocation = (htab->plt->output_section->vma
7643 + htab->plt->output_offset
7644 + ent->plt.offset);
7645 }
8da6118f 7646 break;
252b5132 7647
70bccea4 7648 /* Relocate against _SDA_BASE_. */
7619e7c7 7649 case R_PPC_SDAREL16:
252b5132
RH
7650 {
7651 const char *name;
7652
3b4f3a11
AM
7653 if (sec == NULL || sec->output_section == NULL)
7654 {
7655 unresolved_reloc = TRUE;
7656 break;
7657 }
7658
252b5132 7659 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7660 if (! ((CONST_STRNEQ (name, ".sdata")
5f819128 7661 && (name[6] == 0 || name[6] == '.'))
0112cd26 7662 || (CONST_STRNEQ (name, ".sbss")
5f819128 7663 && (name[5] == 0 || name[5] == '.'))))
252b5132 7664 {
55fd94b0 7665 (*_bfd_error_handler)
d003868e 7666 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7667 "in the wrong output section (%s)"),
d003868e 7668 input_bfd,
55fd94b0
AM
7669 sym_name,
7670 howto->name,
7671 name);
252b5132 7672 }
e87d4038 7673 addend -= SYM_VAL (htab->sdata[0].sym);
252b5132
RH
7674 }
7675 break;
7676
70bccea4 7677 /* Relocate against _SDA2_BASE_. */
7619e7c7 7678 case R_PPC_EMB_SDA2REL:
252b5132
RH
7679 {
7680 const char *name;
7681
3b4f3a11
AM
7682 if (sec == NULL || sec->output_section == NULL)
7683 {
7684 unresolved_reloc = TRUE;
7685 break;
7686 }
7687
252b5132 7688 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26
NC
7689 if (! (CONST_STRNEQ (name, ".sdata2")
7690 || CONST_STRNEQ (name, ".sbss2")))
252b5132 7691 {
55fd94b0 7692 (*_bfd_error_handler)
d003868e 7693 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7694 "in the wrong output section (%s)"),
d003868e 7695 input_bfd,
55fd94b0
AM
7696 sym_name,
7697 howto->name,
7698 name);
c3668558 7699
252b5132 7700 bfd_set_error (bfd_error_bad_value);
b34976b6 7701 ret = FALSE;
252b5132
RH
7702 continue;
7703 }
e87d4038 7704 addend -= SYM_VAL (htab->sdata[1].sym);
252b5132
RH
7705 }
7706 break;
7707
70bccea4 7708 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7
AM
7709 case R_PPC_EMB_SDA21:
7710 case R_PPC_EMB_RELSDA:
252b5132
RH
7711 {
7712 const char *name;
7713 int reg;
7714
3b4f3a11
AM
7715 if (sec == NULL || sec->output_section == NULL)
7716 {
7717 unresolved_reloc = TRUE;
7718 break;
7719 }
7720
252b5132 7721 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7722 if (((CONST_STRNEQ (name, ".sdata")
5f819128 7723 && (name[6] == 0 || name[6] == '.'))
0112cd26 7724 || (CONST_STRNEQ (name, ".sbss")
5f819128 7725 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH
7726 {
7727 reg = 13;
e87d4038 7728 addend -= SYM_VAL (htab->sdata[0].sym);
252b5132 7729 }
0112cd26
NC
7730 else if (CONST_STRNEQ (name, ".sdata2")
7731 || CONST_STRNEQ (name, ".sbss2"))
252b5132
RH
7732 {
7733 reg = 2;
e87d4038 7734 addend -= SYM_VAL (htab->sdata[1].sym);
252b5132 7735 }
8da6118f
KH
7736 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7737 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
7738 {
7739 reg = 0;
7740 }
252b5132
RH
7741 else
7742 {
55fd94b0 7743 (*_bfd_error_handler)
d003868e 7744 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7745 "in the wrong output section (%s)"),
d003868e 7746 input_bfd,
55fd94b0
AM
7747 sym_name,
7748 howto->name,
7749 name);
252b5132
RH
7750
7751 bfd_set_error (bfd_error_bad_value);
b34976b6 7752 ret = FALSE;
252b5132
RH
7753 continue;
7754 }
7755
7756 if (r_type == R_PPC_EMB_SDA21)
7757 { /* fill in register field */
7619e7c7 7758 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 7759 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 7760 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
7761 }
7762 }
7763 break;
7764
70bccea4 7765 /* Relocate against the beginning of the section. */
7619e7c7
AM
7766 case R_PPC_SECTOFF:
7767 case R_PPC_SECTOFF_LO:
7768 case R_PPC_SECTOFF_HI:
7769 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
7770 if (sec == NULL || sec->output_section == NULL)
7771 {
7772 unresolved_reloc = TRUE;
7773 break;
7774 }
252b5132 7775 addend -= sec->output_section->vma;
252b5132
RH
7776 break;
7777
70bccea4 7778 /* Negative relocations. */
7619e7c7
AM
7779 case R_PPC_EMB_NADDR32:
7780 case R_PPC_EMB_NADDR16:
7781 case R_PPC_EMB_NADDR16_LO:
7782 case R_PPC_EMB_NADDR16_HI:
7783 case R_PPC_EMB_NADDR16_HA:
8da6118f 7784 addend -= 2 * relocation;
252b5132
RH
7785 break;
7786
7619e7c7
AM
7787 case R_PPC_COPY:
7788 case R_PPC_GLOB_DAT:
7789 case R_PPC_JMP_SLOT:
7790 case R_PPC_RELATIVE:
e054468f 7791 case R_PPC_IRELATIVE:
7619e7c7
AM
7792 case R_PPC_PLT32:
7793 case R_PPC_PLTREL32:
7794 case R_PPC_PLT16_LO:
7795 case R_PPC_PLT16_HI:
7796 case R_PPC_PLT16_HA:
7797 case R_PPC_ADDR30:
7798 case R_PPC_EMB_RELSEC16:
7799 case R_PPC_EMB_RELST_LO:
7800 case R_PPC_EMB_RELST_HI:
7801 case R_PPC_EMB_RELST_HA:
7802 case R_PPC_EMB_BIT_FLD:
7803 (*_bfd_error_handler)
d003868e
AM
7804 (_("%B: relocation %s is not yet supported for symbol %s."),
7805 input_bfd,
7619e7c7
AM
7806 howto->name,
7807 sym_name);
252b5132
RH
7808
7809 bfd_set_error (bfd_error_invalid_operation);
b34976b6 7810 ret = FALSE;
252b5132 7811 continue;
7619e7c7 7812 }
252b5132 7813
7619e7c7
AM
7814 /* Do any further special processing. */
7815 switch (r_type)
7816 {
7817 default:
7818 break;
7819
7820 case R_PPC_ADDR16_HA:
d7128ce4 7821 case R_PPC_REL16_HA:
7619e7c7
AM
7822 case R_PPC_SECTOFF_HA:
7823 case R_PPC_TPREL16_HA:
7824 case R_PPC_DTPREL16_HA:
7619e7c7
AM
7825 case R_PPC_EMB_NADDR16_HA:
7826 case R_PPC_EMB_RELST_HA:
7827 /* It's just possible that this symbol is a weak symbol
7b609f53 7828 that's not actually defined anywhere. In that case,
7619e7c7
AM
7829 'sec' would be NULL, and we should leave the symbol
7830 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
7831 if (sec == NULL)
7832 break;
7833 /* Fall thru */
7834
7835 case R_PPC_PLT16_HA:
7836 case R_PPC_GOT16_HA:
7837 case R_PPC_GOT_TLSGD16_HA:
7838 case R_PPC_GOT_TLSLD16_HA:
7839 case R_PPC_GOT_TPREL16_HA:
7840 case R_PPC_GOT_DTPREL16_HA:
7841 /* Add 0x10000 if sign bit in 0:15 is set.
7842 Bits 0:15 are not used. */
7843 addend += 0x8000;
7619e7c7 7844 break;
252b5132
RH
7845 }
7846
252b5132 7847#ifdef DEBUG
55fd94b0
AM
7848 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7849 "offset = %ld, addend = %ld\n",
252b5132 7850 howto->name,
8da6118f 7851 (int) r_type,
252b5132
RH
7852 sym_name,
7853 r_symndx,
7619e7c7 7854 (long) rel->r_offset,
8da6118f 7855 (long) addend);
252b5132
RH
7856#endif
7857
7619e7c7
AM
7858 if (unresolved_reloc
7859 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 7860 && h->def_dynamic))
7619e7c7
AM
7861 {
7862 (*_bfd_error_handler)
d003868e
AM
7863 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7864 input_bfd,
7865 input_section,
7619e7c7 7866 (long) rel->r_offset,
7b609f53 7867 howto->name,
7619e7c7
AM
7868 sym_name);
7869 ret = FALSE;
7870 }
7871
252b5132
RH
7872 r = _bfd_final_link_relocate (howto,
7873 input_bfd,
7874 input_section,
7875 contents,
7619e7c7 7876 rel->r_offset,
252b5132
RH
7877 relocation,
7878 addend);
7879
7619e7c7 7880 if (r != bfd_reloc_ok)
252b5132 7881 {
7619e7c7 7882 if (r == bfd_reloc_overflow)
252b5132 7883 {
7619e7c7
AM
7884 if (warned)
7885 continue;
7886 if (h != NULL
7887 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH
7888 && howto->pc_relative)
7889 {
7890 /* Assume this is a call protected by other code that
7891 detect the symbol is undefined. If this is the case,
7892 we can safely ignore the overflow. If not, the
7893 program is hosed anyway, and a little warning isn't
7894 going to help. */
252b5132 7895
dc1bc0c9
RH
7896 continue;
7897 }
252b5132 7898
7619e7c7 7899 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 7900 (h ? &h->root : NULL),
7619e7c7
AM
7901 sym_name,
7902 howto->name,
7903 rel->r_addend,
7904 input_bfd,
7905 input_section,
7906 rel->r_offset))
7907 return FALSE;
dc1bc0c9
RH
7908 }
7909 else
7910 {
7619e7c7 7911 (*_bfd_error_handler)
d003868e
AM
7912 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7913 input_bfd, input_section,
7b609f53 7914 (long) rel->r_offset, howto->name, sym_name, (int) r);
7619e7c7 7915 ret = FALSE;
252b5132
RH
7916 }
7917 }
7918 }
7919
252b5132
RH
7920#ifdef DEBUG
7921 fprintf (stderr, "\n");
7922#endif
7923
7924 return ret;
7925}
252b5132 7926\f
25dbc73a
AM
7927/* Finish up dynamic symbol handling. We set the contents of various
7928 dynamic sections here. */
c5fccbec 7929
b34976b6 7930static bfd_boolean
25dbc73a
AM
7931ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7932 struct bfd_link_info *info,
7933 struct elf_link_hash_entry *h,
7934 Elf_Internal_Sym *sym)
e1a9cb8e 7935{
25dbc73a 7936 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
7937 struct plt_entry *ent;
7938 bfd_boolean doneone;
e1a9cb8e 7939
25dbc73a
AM
7940#ifdef DEBUG
7941 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7942 h->root.root.string);
7943#endif
e1a9cb8e 7944
25dbc73a
AM
7945 htab = ppc_elf_hash_table (info);
7946 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 7947
a6aa5195
AM
7948 doneone = FALSE;
7949 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7950 if (ent->plt.offset != (bfd_vma) -1)
7951 {
7952 if (!doneone)
7953 {
7954 Elf_Internal_Rela rela;
7955 bfd_byte *loc;
7956 bfd_vma reloc_index;
e1a9cb8e 7957
e054468f 7958 if (htab->plt_type == PLT_NEW
25f23106
AM
7959 || !htab->elf.dynamic_sections_created
7960 || h->dynindx == -1)
9d8504b1
PB
7961 reloc_index = ent->plt.offset / 4;
7962 else
7963 {
7964 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7965 / htab->plt_slot_size);
7966 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 7967 && htab->plt_type == PLT_OLD)
9d8504b1
PB
7968 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
7969 }
7970
a6aa5195
AM
7971 /* This symbol has an entry in the procedure linkage table.
7972 Set it up. */
e054468f 7973 if (htab->plt_type == PLT_VXWORKS
25f23106
AM
7974 && htab->elf.dynamic_sections_created
7975 && h->dynindx != -1)
a6aa5195 7976 {
9d8504b1
PB
7977 bfd_vma got_offset;
7978 const bfd_vma *plt_entry;
7979
7980 /* The first three entries in .got.plt are reserved. */
7981 got_offset = (reloc_index + 3) * 4;
7982
7983 /* Use the right PLT. */
7984 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
7985 : ppc_elf_vxworks_plt_entry;
7986
7987 /* Fill in the .plt on VxWorks. */
7988 if (info->shared)
7989 {
9d8504b1 7990 bfd_put_32 (output_bfd,
e87d4038 7991 plt_entry[0] | PPC_HA (got_offset),
9d8504b1
PB
7992 htab->plt->contents + ent->plt.offset + 0);
7993 bfd_put_32 (output_bfd,
e87d4038 7994 plt_entry[1] | PPC_LO (got_offset),
9d8504b1
PB
7995 htab->plt->contents + ent->plt.offset + 4);
7996 }
7997 else
7998 {
e87d4038 7999 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
8000
8001 bfd_put_32 (output_bfd,
e87d4038 8002 plt_entry[0] | PPC_HA (got_loc),
9d8504b1
PB
8003 htab->plt->contents + ent->plt.offset + 0);
8004 bfd_put_32 (output_bfd,
e87d4038 8005 plt_entry[1] | PPC_LO (got_loc),
9d8504b1
PB
8006 htab->plt->contents + ent->plt.offset + 4);
8007 }
8008
8009 bfd_put_32 (output_bfd, plt_entry[2],
8010 htab->plt->contents + ent->plt.offset + 8);
8011 bfd_put_32 (output_bfd, plt_entry[3],
8012 htab->plt->contents + ent->plt.offset + 12);
8013
8014 /* This instruction is an immediate load. The value loaded is
8015 the byte offset of the R_PPC_JMP_SLOT relocation from the
8016 start of the .rela.plt section. The value is stored in the
8017 low-order 16 bits of the load instruction. */
8018 /* NOTE: It appears that this is now an index rather than a
8019 prescaled offset. */
8020 bfd_put_32 (output_bfd,
8021 plt_entry[4] | reloc_index,
8022 htab->plt->contents + ent->plt.offset + 16);
8023 /* This instruction is a PC-relative branch whose target is
8024 the start of the PLT section. The address of this branch
8025 instruction is 20 bytes beyond the start of this PLT entry.
8026 The address is encoded in bits 6-29, inclusive. The value
8027 stored is right-shifted by two bits, permitting a 26-bit
8028 offset. */
8029 bfd_put_32 (output_bfd,
8030 (plt_entry[5]
8031 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8032 htab->plt->contents + ent->plt.offset + 20);
8033 bfd_put_32 (output_bfd, plt_entry[6],
8034 htab->plt->contents + ent->plt.offset + 24);
8035 bfd_put_32 (output_bfd, plt_entry[7],
8036 htab->plt->contents + ent->plt.offset + 28);
8037
8038 /* Fill in the GOT entry corresponding to this PLT slot with
8039 the address immediately after the the "bctr" instruction
8040 in this PLT entry. */
8041 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8042 + htab->plt->output_offset
8043 + ent->plt.offset + 16),
8044 htab->sgotplt->contents + got_offset);
8045
8046 if (!info->shared)
8047 {
8048 /* Fill in a couple of entries in .rela.plt.unloaded. */
8049 loc = htab->srelplt2->contents
8050 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8051 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8052 * sizeof (Elf32_External_Rela));
8053
8054 /* Provide the @ha relocation for the first instruction. */
8055 rela.r_offset = (htab->plt->output_section->vma
8056 + htab->plt->output_offset
8057 + ent->plt.offset + 2);
636ce3f5 8058 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
8059 R_PPC_ADDR16_HA);
8060 rela.r_addend = got_offset;
8061 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8062 loc += sizeof (Elf32_External_Rela);
8063
8064 /* Provide the @l relocation for the second instruction. */
8065 rela.r_offset = (htab->plt->output_section->vma
8066 + htab->plt->output_offset
8067 + ent->plt.offset + 6);
636ce3f5 8068 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
8069 R_PPC_ADDR16_LO);
8070 rela.r_addend = got_offset;
8071 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8072 loc += sizeof (Elf32_External_Rela);
8073
8074 /* Provide a relocation for the GOT entry corresponding to this
8075 PLT slot. Point it at the middle of the .plt entry. */
8076 rela.r_offset = (htab->sgotplt->output_section->vma
8077 + htab->sgotplt->output_offset
8078 + got_offset);
7325306f 8079 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
8080 R_PPC_ADDR32);
8081 rela.r_addend = ent->plt.offset + 16;
8082 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8083 }
8084
8085 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8086 In particular, the offset for the relocation is not the
8087 address of the PLT entry for this function, as specified
8088 by the ABI. Instead, the offset is set to the address of
8089 the GOT slot for this function. See EABI 4.4.4.1. */
8090 rela.r_offset = (htab->sgotplt->output_section->vma
8091 + htab->sgotplt->output_offset
8092 + got_offset);
8093
a6aa5195
AM
8094 }
8095 else
8096 {
e054468f 8097 asection *splt = htab->plt;
25f23106
AM
8098 if (!htab->elf.dynamic_sections_created
8099 || h->dynindx == -1)
e054468f
AM
8100 splt = htab->iplt;
8101
8102 rela.r_offset = (splt->output_section->vma
8103 + splt->output_offset
9d8504b1 8104 + ent->plt.offset);
e054468f 8105 if (htab->plt_type == PLT_OLD
25f23106
AM
8106 || !htab->elf.dynamic_sections_created
8107 || h->dynindx == -1)
9d8504b1
PB
8108 {
8109 /* We don't need to fill in the .plt. The ppc dynamic
8110 linker will fill it in. */
8111 }
8112 else
8113 {
8114 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8115 + htab->glink->output_section->vma
8116 + htab->glink->output_offset);
8117 bfd_put_32 (output_bfd, val,
e054468f 8118 splt->contents + ent->plt.offset);
9d8504b1 8119 }
a6aa5195 8120 }
e1a9cb8e 8121
a6aa5195 8122 /* Fill in the entry in the .rela.plt section. */
a6aa5195 8123 rela.r_addend = 0;
e054468f
AM
8124 if (!htab->elf.dynamic_sections_created
8125 || h->dynindx == -1)
8126 {
8127 BFD_ASSERT (h->type == STT_GNU_IFUNC
8128 && h->def_regular
8129 && (h->root.type == bfd_link_hash_defined
8130 || h->root.type == bfd_link_hash_defweak));
8131 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8132 rela.r_addend = SYM_VAL (h);
8133 }
8134 else
8135 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
e1a9cb8e 8136
25f23106
AM
8137 if (!htab->elf.dynamic_sections_created
8138 || h->dynindx == -1)
8139 loc = (htab->reliplt->contents
8140 + (htab->reliplt->reloc_count++
8141 * sizeof (Elf32_External_Rela)));
e054468f 8142 else
25f23106
AM
8143 loc = (htab->relplt->contents
8144 + reloc_index * sizeof (Elf32_External_Rela));
a6aa5195 8145 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 8146
a6aa5195
AM
8147 if (!h->def_regular)
8148 {
0eb4a168
AM
8149 /* Mark the symbol as undefined, rather than as
8150 defined in the .plt section. Leave the value if
8151 there were any relocations where pointer equality
8152 matters (this is a clue for the dynamic linker, to
8153 make function pointer comparisons work between an
8154 application and shared library), otherwise set it
8155 to zero. */
a6aa5195 8156 sym->st_shndx = SHN_UNDEF;
0eb4a168 8157 if (!h->pointer_equality_needed)
a6aa5195 8158 sym->st_value = 0;
0eb4a168
AM
8159 else if (!h->ref_regular_nonweak)
8160 {
625af618
AM
8161 /* This breaks function pointer comparisons, but
8162 that is better than breaking tests for a NULL
0eb4a168 8163 function pointer. */
0eb4a168
AM
8164 sym->st_value = 0;
8165 }
a6aa5195
AM
8166 }
8167 doneone = TRUE;
8168 }
e1a9cb8e 8169
e054468f 8170 if (htab->plt_type == PLT_NEW
25f23106
AM
8171 || !htab->elf.dynamic_sections_created
8172 || h->dynindx == -1)
a6aa5195 8173 {
e054468f 8174 asection *splt = htab->plt;
25f23106
AM
8175 if (!htab->elf.dynamic_sections_created
8176 || h->dynindx == -1)
e054468f 8177 splt = htab->iplt;
e1a9cb8e 8178
e054468f 8179 write_glink_stub (ent, splt, info);
e1a9cb8e 8180
e054468f
AM
8181 if (!info->shared && !info->pie)
8182 /* We only need one non-PIC glink stub. */
8183 break;
a6aa5195
AM
8184 }
8185 else
8186 break;
8187 }
e1a9cb8e 8188
25dbc73a
AM
8189 if (h->needs_copy)
8190 {
8191 asection *s;
8192 Elf_Internal_Rela rela;
8193 bfd_byte *loc;
e1a9cb8e 8194
25dbc73a 8195 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 8196
25dbc73a
AM
8197#ifdef DEBUG
8198 fprintf (stderr, ", copy");
8199#endif
e1a9cb8e 8200
25dbc73a 8201 BFD_ASSERT (h->dynindx != -1);
86bbe32f 8202
4dc4a9a5 8203 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
8204 s = htab->relsbss;
8205 else
8206 s = htab->relbss;
8207 BFD_ASSERT (s != NULL);
e1a9cb8e 8208
e87d4038 8209 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
8210 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8211 rela.r_addend = 0;
8212 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8213 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8214 }
e1a9cb8e 8215
25dbc73a
AM
8216#ifdef DEBUG
8217 fprintf (stderr, "\n");
8218#endif
e1a9cb8e 8219
25dbc73a 8220 /* Mark some specially defined symbols as absolute. */
9d8504b1
PB
8221 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8222 || (!htab->is_vxworks
8223 && (h == htab->elf.hgot
8224 || strcmp (h->root.root.string,
8225 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
25dbc73a 8226 sym->st_shndx = SHN_ABS;
e1a9cb8e 8227
25dbc73a
AM
8228 return TRUE;
8229}
8230\f
8231static enum elf_reloc_type_class
8232ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 8233{
25dbc73a
AM
8234 switch (ELF32_R_TYPE (rela->r_info))
8235 {
8236 case R_PPC_RELATIVE:
8237 return reloc_class_relative;
8238 case R_PPC_REL24:
8239 case R_PPC_ADDR24:
8240 case R_PPC_JMP_SLOT:
8241 return reloc_class_plt;
8242 case R_PPC_COPY:
8243 return reloc_class_copy;
8244 default:
8245 return reloc_class_normal;
8246 }
e1a9cb8e 8247}
25dbc73a
AM
8248\f
8249/* Finish up the dynamic sections. */
e1a9cb8e 8250
25dbc73a
AM
8251static bfd_boolean
8252ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8253 struct bfd_link_info *info)
e1a9cb8e 8254{
25dbc73a 8255 asection *sdyn;
9d8504b1 8256 asection *splt;
25dbc73a 8257 struct ppc_elf_link_hash_table *htab;
1fe44d79 8258 bfd_vma got;
e87d4038
AM
8259 bfd *dynobj;
8260 bfd_boolean ret = TRUE;
e1a9cb8e 8261
25dbc73a
AM
8262#ifdef DEBUG
8263 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8264#endif
6b0817e5 8265
25dbc73a 8266 htab = ppc_elf_hash_table (info);
9d8504b1
PB
8267 dynobj = elf_hash_table (info)->dynobj;
8268 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8269 if (htab->is_vxworks)
8270 splt = bfd_get_section_by_name (dynobj, ".plt");
8271 else
8272 splt = NULL;
e1a9cb8e 8273
1fe44d79
AM
8274 got = 0;
8275 if (htab->elf.hgot != NULL)
e87d4038 8276 got = SYM_VAL (htab->elf.hgot);
1fe44d79 8277
25dbc73a 8278 if (htab->elf.dynamic_sections_created)
e1a9cb8e 8279 {
25dbc73a 8280 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 8281
25dbc73a 8282 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 8283
25dbc73a
AM
8284 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8285 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8286 for (; dyncon < dynconend; dyncon++)
8287 {
8288 Elf_Internal_Dyn dyn;
8289 asection *s;
e1a9cb8e 8290
9d8504b1 8291 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 8292
25dbc73a
AM
8293 switch (dyn.d_tag)
8294 {
8295 case DT_PLTGOT:
9d8504b1
PB
8296 if (htab->is_vxworks)
8297 s = htab->sgotplt;
8298 else
8299 s = htab->plt;
25dbc73a
AM
8300 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8301 break;
86bbe32f 8302
25dbc73a
AM
8303 case DT_PLTRELSZ:
8304 dyn.d_un.d_val = htab->relplt->size;
8305 break;
e1a9cb8e 8306
25dbc73a
AM
8307 case DT_JMPREL:
8308 s = htab->relplt;
8309 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8310 break;
2f89ff8d 8311
1fe44d79
AM
8312 case DT_PPC_GOT:
8313 dyn.d_un.d_ptr = got;
d7128ce4
AM
8314 break;
8315
9d8504b1
PB
8316 case DT_RELASZ:
8317 if (htab->is_vxworks)
8318 {
8319 if (htab->relplt)
8320 dyn.d_un.d_ptr -= htab->relplt->size;
8321 break;
8322 }
8323 continue;
8324
25dbc73a 8325 default:
7a2b07ff
NS
8326 if (htab->is_vxworks
8327 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8328 break;
25dbc73a
AM
8329 continue;
8330 }
4c45e5c9 8331
25dbc73a
AM
8332 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8333 }
8334 }
4c45e5c9 8335
3b36f7e6 8336 if (htab->got != NULL)
25dbc73a 8337 {
e79f5955
AM
8338 if (htab->elf.hgot->root.u.def.section == htab->got
8339 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
e87d4038 8340 {
e79f5955 8341 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 8342
e87d4038
AM
8343 p += htab->elf.hgot->root.u.def.value;
8344 if (htab->plt_type == PLT_OLD)
e79f5955
AM
8345 {
8346 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8347 so that a function can easily find the address of
8348 _GLOBAL_OFFSET_TABLE_. */
8349 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8350 < htab->elf.hgot->root.u.def.section->size);
8351 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8352 }
3b36f7e6 8353
e87d4038 8354 if (sdyn != NULL)
e79f5955
AM
8355 {
8356 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8357 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8358 < htab->elf.hgot->root.u.def.section->size);
8359 bfd_put_32 (output_bfd, val, p);
8360 }
e87d4038
AM
8361 }
8362 else
8363 {
8364 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
8365 htab->elf.hgot->root.root.string,
e79f5955
AM
8366 (htab->sgotplt != NULL
8367 ? htab->sgotplt->name : htab->got->name));
e87d4038
AM
8368 bfd_set_error (bfd_error_bad_value);
8369 ret = FALSE;
8370 }
25dbc73a
AM
8371
8372 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8373 }
8374
9d8504b1
PB
8375 /* Fill in the first entry in the VxWorks procedure linkage table. */
8376 if (splt && splt->size > 0)
8377 {
8378 /* Use the right PLT. */
8379 static const bfd_vma *plt_entry = NULL;
8380 plt_entry = info->shared ?
8381 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
8382
8383 if (!info->shared)
8384 {
e87d4038 8385 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 8386
e87d4038 8387 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 8388 splt->contents + 0);
e87d4038 8389 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
8390 splt->contents + 4);
8391 }
8392 else
8393 {
8394 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8395 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8396 }
8397 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8398 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8399 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8400 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8401 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8402 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8403
8404 if (! info->shared)
8405 {
8406 Elf_Internal_Rela rela;
8407 bfd_byte *loc;
8408
8409 loc = htab->srelplt2->contents;
8410
8411 /* Output the @ha relocation for the first instruction. */
8412 rela.r_offset = (htab->plt->output_section->vma
8413 + htab->plt->output_offset
8414 + 2);
636ce3f5 8415 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
8416 rela.r_addend = 0;
8417 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8418 loc += sizeof (Elf32_External_Rela);
8419
8420 /* Output the @l relocation for the second instruction. */
8421 rela.r_offset = (htab->plt->output_section->vma
8422 + htab->plt->output_offset
8423 + 6);
636ce3f5 8424 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
8425 rela.r_addend = 0;
8426 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8427 loc += sizeof (Elf32_External_Rela);
8428
8429 /* Fix up the remaining relocations. They may have the wrong
8430 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8431 in which symbols were output. */
8432 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8433 {
8434 Elf_Internal_Rela rel;
8435
8436 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 8437 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
8438 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8439 loc += sizeof (Elf32_External_Rela);
8440
8441 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 8442 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
8443 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8444 loc += sizeof (Elf32_External_Rela);
8445
8446 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 8447 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
8448 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8449 loc += sizeof (Elf32_External_Rela);
8450 }
8451 }
8452 }
8453
e054468f
AM
8454 if (htab->glink != NULL
8455 && htab->glink->contents != NULL
8456 && htab->elf.dynamic_sections_created)
d7128ce4
AM
8457 {
8458 unsigned char *p;
8459 unsigned char *endp;
a6aa5195 8460 bfd_vma res0;
d7128ce4 8461 unsigned int i;
a6aa5195
AM
8462
8463 /*
8464 * PIC glink code is the following:
8465 *
8466 * # ith PLT code stub.
8467 * addis 11,30,(plt+(i-1)*4-got)@ha
8468 * lwz 11,(plt+(i-1)*4-got)@l(11)
8469 * mtctr 11
8470 * bctr
8471 *
8472 * # A table of branches, one for each plt entry.
176a0d42 8473 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
8474 * # addresses, so (r11 - res_0) gives the plt index * 4.
8475 * res_0: b PLTresolve
8476 * res_1: b PLTresolve
8477 * .
8478 * # Some number of entries towards the end can be nops
8479 * res_n_m3: nop
8480 * res_n_m2: nop
8481 * res_n_m1:
8482 *
8483 * PLTresolve:
8484 * addis 11,11,(1f-res_0)@ha
8485 * mflr 0
8486 * bcl 20,31,1f
8487 * 1: addi 11,11,(1b-res_0)@l
8488 * mflr 12
8489 * mtlr 0
8490 * sub 11,11,12 # r11 = index * 4
8491 * addis 12,12,(got+4-1b)@ha
8492 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8493 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8494 * mtctr 0
8495 * add 0,11,11
8496 * add 11,0,11 # r11 = index * 12 = reloc offset.
8497 * bctr
8498 */
8499 static const unsigned int pic_plt_resolve[] =
8500 {
8501 ADDIS_11_11,
8502 MFLR_0,
8503 BCL_20_31,
8504 ADDI_11_11,
8505 MFLR_12,
8506 MTLR_0,
8507 SUB_11_11_12,
8508 ADDIS_12_12,
8509 LWZ_0_12,
8510 LWZ_12_12,
8511 MTCTR_0,
8512 ADD_0_11_11,
8513 ADD_11_0_11,
8514 BCTR,
8515 NOP,
8516 NOP
8517 };
8518
176a0d42
AM
8519 /*
8520 * Non-PIC glink code is a little simpler.
8521 *
8522 * # ith PLT code stub.
8523 * lis 11,(plt+(i-1)*4)@ha
8524 * lwz 11,(plt+(i-1)*4)@l(11)
8525 * mtctr 11
8526 * bctr
8527 *
8528 * The branch table is the same, then comes
8529 *
8530 * PLTresolve:
8531 * lis 12,(got+4)@ha
8532 * addis 11,11,(-res_0)@ha
8533 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8534 * addi 11,11,(-res_0)@l # r11 = index * 4
8535 * mtctr 0
8536 * add 0,11,11
8537 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8538 * add 11,0,11 # r11 = index * 12 = reloc offset.
8539 * bctr
8540 */
d7128ce4
AM
8541 static const unsigned int plt_resolve[] =
8542 {
a6aa5195
AM
8543 LIS_12,
8544 ADDIS_11_11,
8545 LWZ_0_12,
8546 ADDI_11_11,
d7128ce4 8547 MTCTR_0,
7e8aeb9a 8548 ADD_0_11_11,
a6aa5195 8549 LWZ_12_12,
7e8aeb9a 8550 ADD_11_0_11,
d7128ce4
AM
8551 BCTR,
8552 NOP,
8553 NOP,
a6aa5195
AM
8554 NOP,
8555 NOP,
8556 NOP,
8557 NOP,
d7128ce4
AM
8558 NOP
8559 };
8560
a6aa5195
AM
8561 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8562 abort ();
8563 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
8564 abort ();
8565
a6aa5195 8566 /* Build the branch table, one for each plt entry (less one),
86b9da88 8567 and perhaps some padding. */
a6aa5195
AM
8568 p = htab->glink->contents;
8569 p += htab->glink_pltresolve;
86b9da88
AM
8570 endp = htab->glink->contents;
8571 endp += htab->glink->size - GLINK_PLTRESOLVE;
8572 while (p < endp - 8 * 4)
8573 {
8574 bfd_put_32 (output_bfd, B + endp - p, p);
8575 p += 4;
8576 }
8577 while (p < endp)
8578 {
8579 bfd_put_32 (output_bfd, NOP, p);
8580 p += 4;
8581 }
8582
7e8aeb9a 8583 res0 = (htab->glink_pltresolve
86b9da88
AM
8584 + htab->glink->output_section->vma
8585 + htab->glink->output_offset);
8586
8587 /* Last comes the PLTresolve stub. */
7e8aeb9a
AM
8588 if (info->shared || info->pie)
8589 {
a6aa5195 8590 bfd_vma bcl;
d7128ce4 8591
a6aa5195 8592 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 8593 {
a6aa5195 8594 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7e8aeb9a
AM
8595 p += 4;
8596 }
a6aa5195
AM
8597 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8598
8599 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8600 + htab->glink->output_section->vma
8601 + htab->glink->output_offset);
8602
8603 bfd_put_32 (output_bfd,
8604 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8605 bfd_put_32 (output_bfd,
8606 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8607 bfd_put_32 (output_bfd,
8608 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8609 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8610 {
8611 bfd_put_32 (output_bfd,
8612 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8613 bfd_put_32 (output_bfd,
8614 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8615 }
8616 else
8617 {
8618 bfd_put_32 (output_bfd,
8619 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8620 bfd_put_32 (output_bfd,
8621 LWZ_12_12 + 4, p + 9*4);
8622 }
7e8aeb9a
AM
8623 }
8624 else
d7128ce4 8625 {
a6aa5195 8626 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a
AM
8627 {
8628 bfd_put_32 (output_bfd, plt_resolve[i], p);
8629 p += 4;
8630 }
a6aa5195
AM
8631 p -= 4 * ARRAY_SIZE (plt_resolve);
8632
8633 bfd_put_32 (output_bfd,
8634 LIS_12 + PPC_HA (got + 4), p + 0*4);
8635 bfd_put_32 (output_bfd,
8636 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8637 bfd_put_32 (output_bfd,
8638 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8639 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8640 {
8641 bfd_put_32 (output_bfd,
8642 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8643 bfd_put_32 (output_bfd,
8644 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8645 }
8646 else
8647 {
8648 bfd_put_32 (output_bfd,
8649 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8650 bfd_put_32 (output_bfd,
8651 LWZ_12_12 + 4, p + 6*4);
8652 }
d7128ce4 8653 }
d7128ce4
AM
8654 }
8655
e87d4038 8656 return ret;
25dbc73a 8657}
e1a9cb8e 8658\f
252b5132
RH
8659#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8660#define TARGET_LITTLE_NAME "elf32-powerpcle"
8661#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8662#define TARGET_BIG_NAME "elf32-powerpc"
8663#define ELF_ARCH bfd_arch_powerpc
8664#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
8665#ifdef __QNXTARGET__
8666#define ELF_MAXPAGESIZE 0x1000
8667#else
252b5132 8668#define ELF_MAXPAGESIZE 0x10000
d0facd1b 8669#endif
b1342370 8670#define ELF_MINPAGESIZE 0x1000
24718e3b 8671#define ELF_COMMONPAGESIZE 0x1000
252b5132
RH
8672#define elf_info_to_howto ppc_elf_info_to_howto
8673
8674#ifdef EM_CYGNUS_POWERPC
8675#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8676#endif
8677
8678#ifdef EM_PPC_OLD
8679#define ELF_MACHINE_ALT2 EM_PPC_OLD
8680#endif
8681
8682#define elf_backend_plt_not_loaded 1
252b5132 8683#define elf_backend_can_gc_sections 1
51b64d56 8684#define elf_backend_can_refcount 1
b491616a 8685#define elf_backend_rela_normal 1
252b5132 8686
43c40ab2 8687#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 8688#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 8689#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 8690#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
157090f7 8691#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 8692#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 8693#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 8694#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 8695
feee612b 8696#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
8697#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8698#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8699#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8700#define elf_backend_relocate_section ppc_elf_relocate_section
8701#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8702#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 8703#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
8704#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8705#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8706#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 8707#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
8708#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8709#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8710#define elf_backend_fake_sections ppc_elf_fake_sections
8711#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
c5fccbec
DJ
8712#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8713#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 8714#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 8715#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
8716#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8717#define elf_backend_final_write_processing ppc_elf_final_write_processing
8718#define elf_backend_write_section ppc_elf_write_section
551b43fd 8719#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 8720#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 8721#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 8722#define elf_backend_init_index_section _bfd_elf_init_1_index_section
e054468f 8723#define elf_backend_post_process_headers _bfd_elf_set_osabi
252b5132
RH
8724
8725#include "elf32-target.h"
9d8504b1
PB
8726
8727/* VxWorks Target */
8728
8729#undef TARGET_LITTLE_SYM
8730#undef TARGET_LITTLE_NAME
8731
8732#undef TARGET_BIG_SYM
8733#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8734#undef TARGET_BIG_NAME
8735#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8736
d5e3d971
PB
8737/* VxWorks uses the elf default section flags for .plt. */
8738static const struct bfd_elf_special_section *
8739ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 8740{
d5e3d971
PB
8741 if (sec->name == NULL)
8742 return NULL;
8743
8744 if (strcmp (sec->name, ".plt") == 0)
8745 return _bfd_elf_get_sec_type_attr (abfd, sec);
8746
8747 return ppc_elf_get_sec_type_attr (abfd, sec);
8748}
9d8504b1
PB
8749
8750/* Like ppc_elf_link_hash_table_create, but overrides
8751 appropriately for VxWorks. */
8752static struct bfd_link_hash_table *
8753ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8754{
8755 struct bfd_link_hash_table *ret;
8756
8757 ret = ppc_elf_link_hash_table_create (abfd);
8758 if (ret)
8759 {
8760 struct ppc_elf_link_hash_table *htab
8761 = (struct ppc_elf_link_hash_table *)ret;
8762 htab->is_vxworks = 1;
4a3dc543 8763 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
8764 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8765 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8766 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8767 }
8768 return ret;
8769}
8770
8771/* Tweak magic VxWorks symbols as they are loaded. */
8772static bfd_boolean
8773ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8774 struct bfd_link_info *info,
8775 Elf_Internal_Sym *sym,
8776 const char **namep ATTRIBUTE_UNUSED,
8777 flagword *flagsp ATTRIBUTE_UNUSED,
8778 asection **secp,
8779 bfd_vma *valp)
8780{
8781 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8782 valp))
8783 return FALSE;
8784
8785 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8786}
8787
9d8504b1
PB
8788static void
8789ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8790{
8791 ppc_elf_final_write_processing(abfd, linker);
8792 elf_vxworks_final_write_processing(abfd, linker);
8793}
8794
8795/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8796 define it. */
8797#undef elf_backend_want_plt_sym
8798#define elf_backend_want_plt_sym 1
8799#undef elf_backend_want_got_plt
8800#define elf_backend_want_got_plt 1
8801#undef elf_backend_got_symbol_offset
8802#define elf_backend_got_symbol_offset 0
8803#undef elf_backend_plt_not_loaded
8804#define elf_backend_plt_not_loaded 0
8805#undef elf_backend_plt_readonly
8806#define elf_backend_plt_readonly 1
8807#undef elf_backend_got_header_size
8808#define elf_backend_got_header_size 12
8809
468392fb
AM
8810#undef bfd_elf32_get_synthetic_symtab
8811
9d8504b1
PB
8812#undef bfd_elf32_bfd_link_hash_table_create
8813#define bfd_elf32_bfd_link_hash_table_create \
8814 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
8815#undef elf_backend_add_symbol_hook
8816#define elf_backend_add_symbol_hook \
8817 ppc_elf_vxworks_add_symbol_hook
8818#undef elf_backend_link_output_symbol_hook
8819#define elf_backend_link_output_symbol_hook \
9c72ff84 8820 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
8821#undef elf_backend_final_write_processing
8822#define elf_backend_final_write_processing \
8823 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
8824#undef elf_backend_get_sec_type_attr
8825#define elf_backend_get_sec_type_attr \
8826 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
8827#undef elf_backend_emit_relocs
8828#define elf_backend_emit_relocs \
8829 elf_vxworks_emit_relocs
8830
8831#undef elf32_bed
8832#define elf32_bed ppc_elf_vxworks_bed
e054468f 8833#undef elf_backend_post_process_headers
9d8504b1
PB
8834
8835#include "elf32-target.h"
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