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[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
CommitLineData
252b5132 1/* PowerPC-specific support for 32-bit ELF
051d5130 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
0ffa91dd 3 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
252b5132
RH
4 Written by Ian Lance Taylor, Cygnus Support.
5
ae9a127f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
ae9a127f
NC
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
ae9a127f 11 (at your option) any later version.
252b5132 12
ae9a127f
NC
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
ae9a127f 18 You should have received a copy of the GNU General Public License
fc0bffd6 19 along with this program; if not, write to the
3e110533 20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
53e09e0a 21 Boston, MA 02110-1301, USA. */
252b5132 22
cd123cb7 23
252b5132
RH
24/* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
28
3db64b00 29#include "sysdep.h"
183e98be 30#include <stdarg.h>
252b5132 31#include "bfd.h"
252b5132
RH
32#include "bfdlink.h"
33#include "libbfd.h"
34#include "elf-bfd.h"
35#include "elf/ppc.h"
7619e7c7 36#include "elf32-ppc.h"
9d8504b1 37#include "elf-vxworks.h"
252b5132 38
f0fe0e16 39/* RELA relocations are used here. */
252b5132 40
252b5132 41static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 43static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 45
70bccea4
AM
46/* Branch prediction bit for branch taken relocs. */
47#define BRANCH_PREDICT_BIT 0x200000
48/* Mask to set RA in memory instructions. */
49#define RA_REGISTER_MASK 0x001f0000
50/* Value to shift register by to insert RA. */
51#define RA_REGISTER_SHIFT 16
252b5132
RH
52
53/* The name of the dynamic interpreter. This is put in the .interp
54 section. */
252b5132
RH
55#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
56
d7128ce4 57/* For old-style PLT. */
252b5132
RH
58/* The number of single-slot PLT entries (the rest use two slots). */
59#define PLT_NUM_SINGLE_ENTRIES 8192
60
d7128ce4 61/* For new-style .glink and .plt. */
a6aa5195 62#define GLINK_PLTRESOLVE 16*4
d7128ce4
AM
63#define GLINK_ENTRY_SIZE 4*4
64
9d8504b1
PB
65/* VxWorks uses its own plt layout, filled in by the static linker. */
66
67/* The standard VxWorks PLT entry. */
68#define VXWORKS_PLT_ENTRY_SIZE 32
69static const bfd_vma ppc_elf_vxworks_plt_entry
70 [VXWORKS_PLT_ENTRY_SIZE / 4] =
71 {
72 0x3d800000, /* lis r12,0 */
73 0x818c0000, /* lwz r12,0(r12) */
74 0x7d8903a6, /* mtctr r12 */
75 0x4e800420, /* bctr */
76 0x39600000, /* li r11,0 */
77 0x48000000, /* b 14 <.PLT0resolve+0x4> */
78 0x60000000, /* nop */
79 0x60000000, /* nop */
80 };
81static const bfd_vma ppc_elf_vxworks_pic_plt_entry
82 [VXWORKS_PLT_ENTRY_SIZE / 4] =
83 {
84 0x3d9e0000, /* addis r12,r30,0 */
85 0x818c0000, /* lwz r12,0(r12) */
86 0x7d8903a6, /* mtctr r12 */
87 0x4e800420, /* bctr */
88 0x39600000, /* li r11,0 */
89 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
90 0x60000000, /* nop */
91 0x60000000, /* nop */
92 };
93
94/* The initial VxWorks PLT entry. */
95#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
96static const bfd_vma ppc_elf_vxworks_plt0_entry
97 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
98 {
99 0x3d800000, /* lis r12,0 */
100 0x398c0000, /* addi r12,r12,0 */
101 0x800c0008, /* lwz r0,8(r12) */
102 0x7c0903a6, /* mtctr r0 */
103 0x818c0004, /* lwz r12,4(r12) */
104 0x4e800420, /* bctr */
105 0x60000000, /* nop */
106 0x60000000, /* nop */
107 };
108static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
109 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
110 {
111 0x819e0008, /* lwz r12,8(r30) */
112 0x7d8903a6, /* mtctr r12 */
113 0x819e0004, /* lwz r12,4(r30) */
114 0x4e800420, /* bctr */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
119 };
120
121/* For executables, we have some additional relocations in
122 .rela.plt.unloaded, for the kernel loader. */
123
124/* The number of non-JMP_SLOT relocations per PLT0 slot. */
125#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
126/* The number of relocations in the PLTResolve slot. */
127#define VXWORKS_PLTRESOLVE_RELOCS 2
128/* The number of relocations in the PLTResolve slot when when creating
129 a shared library. */
130#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
131
d7128ce4 132/* Some instructions. */
d7128ce4 133#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM
134#define ADDIS_11_30 0x3d7e0000
135#define ADDIS_12_12 0x3d8c0000
d7128ce4 136#define ADDI_11_11 0x396b0000
d7128ce4
AM
137#define ADD_0_11_11 0x7c0b5a14
138#define ADD_11_0_11 0x7d605a14
a6aa5195
AM
139#define B 0x48000000
140#define BCL_20_31 0x429f0005
d7128ce4 141#define BCTR 0x4e800420
7e8aeb9a
AM
142#define LIS_11 0x3d600000
143#define LIS_12 0x3d800000
a6aa5195
AM
144#define LWZU_0_12 0x840c0000
145#define LWZ_0_12 0x800c0000
146#define LWZ_11_11 0x816b0000
147#define LWZ_11_30 0x817e0000
148#define LWZ_12_12 0x818c0000
149#define MFLR_0 0x7c0802a6
150#define MFLR_12 0x7d8802a6
151#define MTCTR_0 0x7c0903a6
152#define MTCTR_11 0x7d6903a6
153#define MTLR_0 0x7c0803a6
154#define NOP 0x60000000
155#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM
156
157/* Offset of tp and dtp pointers from start of TLS block. */
158#define TP_OFFSET 0x7000
159#define DTP_OFFSET 0x8000
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
7619e7c7
AM
756 /* Marker reloc for TLS. */
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
771 /* Computes the load module index of the load module that contains the
772 definition of its TLS sym. */
773 HOWTO (R_PPC_DTPMOD32,
774 0, /* rightshift */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
776 32, /* bitsize */
777 FALSE, /* pc_relative */
778 0, /* bitpos */
779 complain_overflow_dont, /* complain_on_overflow */
780 ppc_elf_unhandled_reloc, /* special_function */
781 "R_PPC_DTPMOD32", /* name */
b34976b6 782 FALSE, /* partial_inplace */
252b5132
RH
783 0, /* src_mask */
784 0xffffffff, /* dst_mask */
b34976b6 785 FALSE), /* pcrel_offset */
252b5132 786
7619e7c7
AM
787 /* Computes a dtv-relative displacement, the difference between the value
788 of sym+add and the base address of the thread-local storage block that
789 contains the definition of sym, minus 0x8000. */
790 HOWTO (R_PPC_DTPREL32,
791 0, /* rightshift */
792 2, /* size (0 = byte, 1 = short, 2 = long) */
793 32, /* bitsize */
794 FALSE, /* pc_relative */
795 0, /* bitpos */
796 complain_overflow_dont, /* complain_on_overflow */
797 ppc_elf_unhandled_reloc, /* special_function */
798 "R_PPC_DTPREL32", /* name */
799 FALSE, /* partial_inplace */
800 0, /* src_mask */
801 0xffffffff, /* dst_mask */
802 FALSE), /* pcrel_offset */
803
804 /* A 16 bit dtprel reloc. */
805 HOWTO (R_PPC_DTPREL16,
252b5132
RH
806 0, /* rightshift */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
808 16, /* bitsize */
b34976b6 809 FALSE, /* pc_relative */
252b5132 810 0, /* bitpos */
7619e7c7
AM
811 complain_overflow_signed, /* complain_on_overflow */
812 ppc_elf_unhandled_reloc, /* special_function */
813 "R_PPC_DTPREL16", /* name */
b34976b6 814 FALSE, /* partial_inplace */
252b5132
RH
815 0, /* src_mask */
816 0xffff, /* dst_mask */
b34976b6 817 FALSE), /* pcrel_offset */
252b5132 818
7619e7c7
AM
819 /* Like DTPREL16, but no overflow. */
820 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH
821 0, /* rightshift */
822 1, /* size (0 = byte, 1 = short, 2 = long) */
823 16, /* bitsize */
b34976b6 824 FALSE, /* pc_relative */
252b5132 825 0, /* bitpos */
7619e7c7
AM
826 complain_overflow_dont, /* complain_on_overflow */
827 ppc_elf_unhandled_reloc, /* special_function */
828 "R_PPC_DTPREL16_LO", /* name */
b34976b6 829 FALSE, /* partial_inplace */
252b5132
RH
830 0, /* src_mask */
831 0xffff, /* dst_mask */
b34976b6 832 FALSE), /* pcrel_offset */
252b5132 833
7619e7c7
AM
834 /* Like DTPREL16_LO, but next higher group of 16 bits. */
835 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH
836 16, /* rightshift */
837 1, /* size (0 = byte, 1 = short, 2 = long) */
838 16, /* bitsize */
b34976b6 839 FALSE, /* pc_relative */
252b5132
RH
840 0, /* bitpos */
841 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL16_HI", /* name */
b34976b6 844 FALSE, /* partial_inplace */
252b5132
RH
845 0, /* src_mask */
846 0xffff, /* dst_mask */
b34976b6 847 FALSE), /* pcrel_offset */
252b5132 848
7619e7c7
AM
849 /* Like DTPREL16_HI, but adjust for low 16 bits. */
850 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH
851 16, /* rightshift */
852 1, /* size (0 = byte, 1 = short, 2 = long) */
853 16, /* bitsize */
b34976b6 854 FALSE, /* pc_relative */
252b5132
RH
855 0, /* bitpos */
856 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16_HA", /* name */
b34976b6 859 FALSE, /* partial_inplace */
252b5132
RH
860 0, /* src_mask */
861 0xffff, /* dst_mask */
b34976b6 862 FALSE), /* pcrel_offset */
252b5132 863
7619e7c7
AM
864 /* Computes a tp-relative displacement, the difference between the value of
865 sym+add and the value of the thread pointer (r13). */
866 HOWTO (R_PPC_TPREL32,
867 0, /* rightshift */
868 2, /* size (0 = byte, 1 = short, 2 = long) */
869 32, /* bitsize */
870 FALSE, /* pc_relative */
871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
873 ppc_elf_unhandled_reloc, /* special_function */
874 "R_PPC_TPREL32", /* name */
875 FALSE, /* partial_inplace */
876 0, /* src_mask */
877 0xffffffff, /* dst_mask */
878 FALSE), /* pcrel_offset */
879
880 /* A 16 bit tprel reloc. */
881 HOWTO (R_PPC_TPREL16,
252b5132
RH
882 0, /* rightshift */
883 1, /* size (0 = byte, 1 = short, 2 = long) */
884 16, /* bitsize */
b34976b6 885 FALSE, /* pc_relative */
252b5132 886 0, /* bitpos */
7619e7c7
AM
887 complain_overflow_signed, /* complain_on_overflow */
888 ppc_elf_unhandled_reloc, /* special_function */
889 "R_PPC_TPREL16", /* name */
b34976b6 890 FALSE, /* partial_inplace */
252b5132
RH
891 0, /* src_mask */
892 0xffff, /* dst_mask */
b34976b6 893 FALSE), /* pcrel_offset */
252b5132 894
7619e7c7
AM
895 /* Like TPREL16, but no overflow. */
896 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH
897 0, /* rightshift */
898 1, /* size (0 = byte, 1 = short, 2 = long) */
899 16, /* bitsize */
b34976b6 900 FALSE, /* pc_relative */
252b5132 901 0, /* bitpos */
7619e7c7
AM
902 complain_overflow_dont, /* complain_on_overflow */
903 ppc_elf_unhandled_reloc, /* special_function */
904 "R_PPC_TPREL16_LO", /* name */
b34976b6 905 FALSE, /* partial_inplace */
252b5132
RH
906 0, /* src_mask */
907 0xffff, /* dst_mask */
b34976b6 908 FALSE), /* pcrel_offset */
252b5132 909
7619e7c7
AM
910 /* Like TPREL16_LO, but next higher group of 16 bits. */
911 HOWTO (R_PPC_TPREL16_HI,
912 16, /* rightshift */
913 1, /* size (0 = byte, 1 = short, 2 = long) */
914 16, /* bitsize */
915 FALSE, /* pc_relative */
916 0, /* bitpos */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL16_HI", /* name */
920 FALSE, /* partial_inplace */
921 0, /* src_mask */
922 0xffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
924
925 /* Like TPREL16_HI, but adjust for low 16 bits. */
926 HOWTO (R_PPC_TPREL16_HA,
927 16, /* rightshift */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
929 16, /* bitsize */
930 FALSE, /* pc_relative */
931 0, /* bitpos */
932 complain_overflow_dont, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16_HA", /* name */
935 FALSE, /* partial_inplace */
936 0, /* src_mask */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
939
940 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
941 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
942 to the first entry. */
943 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH
944 0, /* rightshift */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
946 16, /* bitsize */
b34976b6 947 FALSE, /* pc_relative */
252b5132
RH
948 0, /* bitpos */
949 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
950 ppc_elf_unhandled_reloc, /* special_function */
951 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 952 FALSE, /* partial_inplace */
252b5132
RH
953 0, /* src_mask */
954 0xffff, /* dst_mask */
b34976b6 955 FALSE), /* pcrel_offset */
252b5132 956
7619e7c7
AM
957 /* Like GOT_TLSGD16, but no overflow. */
958 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 959 0, /* rightshift */
7619e7c7 960 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 961 16, /* bitsize */
b34976b6 962 FALSE, /* pc_relative */
252b5132 963 0, /* bitpos */
7619e7c7
AM
964 complain_overflow_dont, /* complain_on_overflow */
965 ppc_elf_unhandled_reloc, /* special_function */
966 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 967 FALSE, /* partial_inplace */
252b5132
RH
968 0, /* src_mask */
969 0xffff, /* dst_mask */
b34976b6 970 FALSE), /* pcrel_offset */
252b5132 971
7619e7c7
AM
972 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
973 HOWTO (R_PPC_GOT_TLSGD16_HI,
974 16, /* rightshift */
975 1, /* size (0 = byte, 1 = short, 2 = long) */
976 16, /* bitsize */
977 FALSE, /* pc_relative */
978 0, /* bitpos */
979 complain_overflow_dont, /* complain_on_overflow */
980 ppc_elf_unhandled_reloc, /* special_function */
981 "R_PPC_GOT_TLSGD16_HI", /* name */
982 FALSE, /* partial_inplace */
983 0, /* src_mask */
984 0xffff, /* dst_mask */
985 FALSE), /* pcrel_offset */
252b5132 986
7619e7c7
AM
987 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
988 HOWTO (R_PPC_GOT_TLSGD16_HA,
989 16, /* rightshift */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
991 16, /* bitsize */
992 FALSE, /* pc_relative */
993 0, /* bitpos */
994 complain_overflow_dont, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16_HA", /* name */
997 FALSE, /* partial_inplace */
998 0, /* src_mask */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1001
1002 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1003 with values (sym+add)@dtpmod and zero, and computes the offset to the
1004 first entry. */
1005 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH
1006 0, /* rightshift */
1007 1, /* size (0 = byte, 1 = short, 2 = long) */
1008 16, /* bitsize */
7619e7c7 1009 FALSE, /* pc_relative */
252b5132
RH
1010 0, /* bitpos */
1011 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1012 ppc_elf_unhandled_reloc, /* special_function */
1013 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1014 FALSE, /* partial_inplace */
252b5132
RH
1015 0, /* src_mask */
1016 0xffff, /* dst_mask */
b34976b6 1017 FALSE), /* pcrel_offset */
252b5132 1018
7619e7c7
AM
1019 /* Like GOT_TLSLD16, but no overflow. */
1020 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1021 0, /* rightshift */
7619e7c7
AM
1022 1, /* size (0 = byte, 1 = short, 2 = long) */
1023 16, /* bitsize */
b34976b6 1024 FALSE, /* pc_relative */
252b5132
RH
1025 0, /* bitpos */
1026 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1027 ppc_elf_unhandled_reloc, /* special_function */
1028 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1029 FALSE, /* partial_inplace */
252b5132 1030 0, /* src_mask */
7619e7c7 1031 0xffff, /* dst_mask */
b34976b6 1032 FALSE), /* pcrel_offset */
252b5132 1033
7619e7c7
AM
1034 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1035 HOWTO (R_PPC_GOT_TLSLD16_HI,
1036 16, /* rightshift */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1038 16, /* bitsize */
b34976b6 1039 FALSE, /* pc_relative */
252b5132
RH
1040 0, /* bitpos */
1041 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1042 ppc_elf_unhandled_reloc, /* special_function */
1043 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1044 FALSE, /* partial_inplace */
252b5132 1045 0, /* src_mask */
7619e7c7 1046 0xffff, /* dst_mask */
b34976b6 1047 FALSE), /* pcrel_offset */
252b5132 1048
7619e7c7
AM
1049 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1050 HOWTO (R_PPC_GOT_TLSLD16_HA,
1051 16, /* rightshift */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1053 16, /* bitsize */
1054 FALSE, /* pc_relative */
1055 0, /* bitpos */
1056 complain_overflow_dont, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16_HA", /* name */
1059 FALSE, /* partial_inplace */
1060 0, /* src_mask */
1061 0xffff, /* dst_mask */
1062 FALSE), /* pcrel_offset */
1063
1064 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1065 the offset to the entry. */
1066 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH
1067 0, /* rightshift */
1068 1, /* size (0 = byte, 1 = short, 2 = long) */
1069 16, /* bitsize */
b34976b6 1070 FALSE, /* pc_relative */
252b5132
RH
1071 0, /* bitpos */
1072 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1073 ppc_elf_unhandled_reloc, /* special_function */
1074 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1075 FALSE, /* partial_inplace */
252b5132
RH
1076 0, /* src_mask */
1077 0xffff, /* dst_mask */
b34976b6 1078 FALSE), /* pcrel_offset */
252b5132 1079
7619e7c7
AM
1080 /* Like GOT_DTPREL16, but no overflow. */
1081 HOWTO (R_PPC_GOT_DTPREL16_LO,
1082 0, /* rightshift */
1083 1, /* size (0 = byte, 1 = short, 2 = long) */
1084 16, /* bitsize */
1085 FALSE, /* pc_relative */
1086 0, /* bitpos */
1087 complain_overflow_dont, /* complain_on_overflow */
1088 ppc_elf_unhandled_reloc, /* special_function */
1089 "R_PPC_GOT_DTPREL16_LO", /* name */
1090 FALSE, /* partial_inplace */
1091 0, /* src_mask */
1092 0xffff, /* dst_mask */
1093 FALSE), /* pcrel_offset */
252b5132 1094
7619e7c7
AM
1095 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1096 HOWTO (R_PPC_GOT_DTPREL16_HI,
1097 16, /* rightshift */
1098 1, /* size (0 = byte, 1 = short, 2 = long) */
1099 16, /* bitsize */
1100 FALSE, /* pc_relative */
1101 0, /* bitpos */
1102 complain_overflow_dont, /* complain_on_overflow */
1103 ppc_elf_unhandled_reloc, /* special_function */
1104 "R_PPC_GOT_DTPREL16_HI", /* name */
1105 FALSE, /* partial_inplace */
1106 0, /* src_mask */
1107 0xffff, /* dst_mask */
1108 FALSE), /* pcrel_offset */
252b5132 1109
7619e7c7
AM
1110 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1111 HOWTO (R_PPC_GOT_DTPREL16_HA,
1112 16, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 16, /* bitsize */
1115 FALSE, /* pc_relative */
1116 0, /* bitpos */
1117 complain_overflow_dont, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16_HA", /* name */
1120 FALSE, /* partial_inplace */
1121 0, /* src_mask */
1122 0xffff, /* dst_mask */
1123 FALSE), /* pcrel_offset */
c3668558 1124
7619e7c7
AM
1125 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1126 offset to the entry. */
1127 HOWTO (R_PPC_GOT_TPREL16,
1128 0, /* rightshift */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 16, /* bitsize */
1131 FALSE, /* pc_relative */
1132 0, /* bitpos */
1133 complain_overflow_signed, /* complain_on_overflow */
1134 ppc_elf_unhandled_reloc, /* special_function */
1135 "R_PPC_GOT_TPREL16", /* name */
1136 FALSE, /* partial_inplace */
1137 0, /* src_mask */
1138 0xffff, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1140
1141 /* Like GOT_TPREL16, but no overflow. */
1142 HOWTO (R_PPC_GOT_TPREL16_LO,
1143 0, /* rightshift */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 16, /* bitsize */
1146 FALSE, /* pc_relative */
1147 0, /* bitpos */
1148 complain_overflow_dont, /* complain_on_overflow */
1149 ppc_elf_unhandled_reloc, /* special_function */
1150 "R_PPC_GOT_TPREL16_LO", /* name */
1151 FALSE, /* partial_inplace */
1152 0, /* src_mask */
1153 0xffff, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1155
1156 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1157 HOWTO (R_PPC_GOT_TPREL16_HI,
1158 16, /* rightshift */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 16, /* bitsize */
1161 FALSE, /* pc_relative */
1162 0, /* bitpos */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 ppc_elf_unhandled_reloc, /* special_function */
1165 "R_PPC_GOT_TPREL16_HI", /* name */
1166 FALSE, /* partial_inplace */
1167 0, /* src_mask */
1168 0xffff, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1170
1171 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1172 HOWTO (R_PPC_GOT_TPREL16_HA,
1173 16, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 16, /* bitsize */
1176 FALSE, /* pc_relative */
1177 0, /* bitpos */
1178 complain_overflow_dont, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16_HA", /* name */
1181 FALSE, /* partial_inplace */
1182 0, /* src_mask */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1185
1186 /* The remaining relocs are from the Embedded ELF ABI, and are not
1187 in the SVR4 ELF ABI. */
1188
1189 /* 32 bit value resulting from the addend minus the symbol. */
1190 HOWTO (R_PPC_EMB_NADDR32, /* type */
1191 0, /* rightshift */
1192 2, /* size (0 = byte, 1 = short, 2 = long) */
1193 32, /* bitsize */
1194 FALSE, /* pc_relative */
1195 0, /* bitpos */
1196 complain_overflow_bitfield, /* complain_on_overflow */
1197 bfd_elf_generic_reloc, /* special_function */
1198 "R_PPC_EMB_NADDR32", /* name */
1199 FALSE, /* partial_inplace */
1200 0, /* src_mask */
1201 0xffffffff, /* dst_mask */
1202 FALSE), /* pcrel_offset */
1203
1204 /* 16 bit value resulting from the addend minus the symbol. */
1205 HOWTO (R_PPC_EMB_NADDR16, /* type */
1206 0, /* rightshift */
1207 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 16, /* bitsize */
1209 FALSE, /* pc_relative */
1210 0, /* bitpos */
1211 complain_overflow_bitfield, /* complain_on_overflow */
1212 bfd_elf_generic_reloc, /* special_function */
1213 "R_PPC_EMB_NADDR16", /* name */
1214 FALSE, /* partial_inplace */
1215 0, /* src_mask */
1216 0xffff, /* dst_mask */
1217 FALSE), /* pcrel_offset */
1218
1219 /* 16 bit value resulting from the addend minus the symbol. */
1220 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1221 0, /* rightshift */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1223 16, /* bitsize */
1224 FALSE, /* pc_relative */
1225 0, /* bitpos */
1226 complain_overflow_dont,/* complain_on_overflow */
1227 bfd_elf_generic_reloc, /* special_function */
1228 "R_PPC_EMB_ADDR16_LO", /* name */
1229 FALSE, /* partial_inplace */
1230 0, /* src_mask */
1231 0xffff, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1233
1234 /* The high order 16 bits of the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1236 16, /* rightshift */
1237 1, /* size (0 = byte, 1 = short, 2 = long) */
1238 16, /* bitsize */
1239 FALSE, /* pc_relative */
1240 0, /* bitpos */
1241 complain_overflow_dont, /* complain_on_overflow */
1242 bfd_elf_generic_reloc, /* special_function */
1243 "R_PPC_EMB_NADDR16_HI", /* name */
1244 FALSE, /* partial_inplace */
1245 0, /* src_mask */
1246 0xffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1248
1249 /* The high order 16 bits of the result of the addend minus the address,
1250 plus 1 if the contents of the low 16 bits, treated as a signed number,
1251 is negative. */
1252 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1253 16, /* rightshift */
1254 1, /* size (0 = byte, 1 = short, 2 = long) */
1255 16, /* bitsize */
1256 FALSE, /* pc_relative */
1257 0, /* bitpos */
1258 complain_overflow_dont, /* complain_on_overflow */
25dbc73a
AM
1259 ppc_elf_addr16_ha_reloc, /* special_function */
1260 "R_PPC_EMB_NADDR16_HA", /* name */
1261 FALSE, /* partial_inplace */
1262 0, /* src_mask */
1263 0xffff, /* dst_mask */
1264 FALSE), /* pcrel_offset */
1265
1266 /* 16 bit value resulting from allocating a 4 byte word to hold an
1267 address in the .sdata section, and returning the offset from
1268 _SDA_BASE_ for that relocation. */
1269 HOWTO (R_PPC_EMB_SDAI16, /* type */
1270 0, /* rightshift */
1271 1, /* size (0 = byte, 1 = short, 2 = long) */
1272 16, /* bitsize */
1273 FALSE, /* pc_relative */
1274 0, /* bitpos */
1275 complain_overflow_bitfield, /* complain_on_overflow */
1276 bfd_elf_generic_reloc, /* special_function */
1277 "R_PPC_EMB_SDAI16", /* name */
1278 FALSE, /* partial_inplace */
1279 0, /* src_mask */
1280 0xffff, /* dst_mask */
1281 FALSE), /* pcrel_offset */
1282
1283 /* 16 bit value resulting from allocating a 4 byte word to hold an
1284 address in the .sdata2 section, and returning the offset from
1285 _SDA2_BASE_ for that relocation. */
1286 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1287 0, /* rightshift */
1288 1, /* size (0 = byte, 1 = short, 2 = long) */
1289 16, /* bitsize */
1290 FALSE, /* pc_relative */
1291 0, /* bitpos */
1292 complain_overflow_bitfield, /* complain_on_overflow */
1293 bfd_elf_generic_reloc, /* special_function */
1294 "R_PPC_EMB_SDA2I16", /* name */
1295 FALSE, /* partial_inplace */
1296 0, /* src_mask */
1297 0xffff, /* dst_mask */
1298 FALSE), /* pcrel_offset */
1299
1300 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1301 small data items. */
1302 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1303 0, /* rightshift */
1304 1, /* size (0 = byte, 1 = short, 2 = long) */
1305 16, /* bitsize */
1306 FALSE, /* pc_relative */
1307 0, /* bitpos */
1308 complain_overflow_signed, /* complain_on_overflow */
1309 bfd_elf_generic_reloc, /* special_function */
1310 "R_PPC_EMB_SDA2REL", /* name */
1311 FALSE, /* partial_inplace */
1312 0, /* src_mask */
1313 0xffff, /* dst_mask */
1314 FALSE), /* pcrel_offset */
1315
1316 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1317 signed offset from the appropriate base, and filling in the register
1318 field with the appropriate register (0, 2, or 13). */
1319 HOWTO (R_PPC_EMB_SDA21, /* type */
1320 0, /* rightshift */
1321 2, /* size (0 = byte, 1 = short, 2 = long) */
1322 16, /* bitsize */
1323 FALSE, /* pc_relative */
1324 0, /* bitpos */
1325 complain_overflow_signed, /* complain_on_overflow */
1326 bfd_elf_generic_reloc, /* special_function */
1327 "R_PPC_EMB_SDA21", /* name */
1328 FALSE, /* partial_inplace */
1329 0, /* src_mask */
1330 0xffff, /* dst_mask */
1331 FALSE), /* pcrel_offset */
1332
1333 /* Relocation not handled: R_PPC_EMB_MRKREF */
1334 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1335 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1336 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1337 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1338 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1339
1340 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1341 in the 16 bit signed offset from the appropriate base, and filling in the
1342 register field with the appropriate register (0, 2, or 13). */
1343 HOWTO (R_PPC_EMB_RELSDA, /* type */
1344 0, /* rightshift */
1345 1, /* size (0 = byte, 1 = short, 2 = long) */
1346 16, /* bitsize */
1347 TRUE, /* pc_relative */
1348 0, /* bitpos */
1349 complain_overflow_signed, /* complain_on_overflow */
1350 bfd_elf_generic_reloc, /* special_function */
1351 "R_PPC_EMB_RELSDA", /* name */
1352 FALSE, /* partial_inplace */
1353 0, /* src_mask */
1354 0xffff, /* dst_mask */
1355 FALSE), /* pcrel_offset */
1356
d7128ce4
AM
1357 /* A 16 bit relative relocation. */
1358 HOWTO (R_PPC_REL16, /* type */
1359 0, /* rightshift */
1360 1, /* size (0 = byte, 1 = short, 2 = long) */
1361 16, /* bitsize */
1362 TRUE, /* pc_relative */
1363 0, /* bitpos */
1364 complain_overflow_bitfield, /* complain_on_overflow */
1365 bfd_elf_generic_reloc, /* special_function */
1366 "R_PPC_REL16", /* name */
1367 FALSE, /* partial_inplace */
1368 0, /* src_mask */
1369 0xffff, /* dst_mask */
1370 TRUE), /* pcrel_offset */
1371
1372 /* A 16 bit relative relocation without overflow. */
1373 HOWTO (R_PPC_REL16_LO, /* type */
1374 0, /* rightshift */
1375 1, /* size (0 = byte, 1 = short, 2 = long) */
1376 16, /* bitsize */
1377 TRUE, /* pc_relative */
1378 0, /* bitpos */
1379 complain_overflow_dont,/* complain_on_overflow */
1380 bfd_elf_generic_reloc, /* special_function */
1381 "R_PPC_REL16_LO", /* name */
1382 FALSE, /* partial_inplace */
1383 0, /* src_mask */
1384 0xffff, /* dst_mask */
1385 TRUE), /* pcrel_offset */
1386
1387 /* The high order 16 bits of a relative address. */
1388 HOWTO (R_PPC_REL16_HI, /* type */
1389 16, /* rightshift */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1391 16, /* bitsize */
1392 TRUE, /* pc_relative */
1393 0, /* bitpos */
1394 complain_overflow_dont, /* complain_on_overflow */
1395 bfd_elf_generic_reloc, /* special_function */
1396 "R_PPC_REL16_HI", /* name */
1397 FALSE, /* partial_inplace */
1398 0, /* src_mask */
1399 0xffff, /* dst_mask */
1400 TRUE), /* pcrel_offset */
1401
1402 /* The high order 16 bits of a relative address, plus 1 if the contents of
1403 the low 16 bits, treated as a signed number, is negative. */
1404 HOWTO (R_PPC_REL16_HA, /* type */
1405 16, /* rightshift */
1406 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 16, /* bitsize */
1408 TRUE, /* pc_relative */
1409 0, /* bitpos */
1410 complain_overflow_dont, /* complain_on_overflow */
1411 ppc_elf_addr16_ha_reloc, /* special_function */
1412 "R_PPC_REL16_HA", /* name */
1413 FALSE, /* partial_inplace */
1414 0, /* src_mask */
1415 0xffff, /* dst_mask */
1416 TRUE), /* pcrel_offset */
1417
25dbc73a
AM
1418 /* GNU extension to record C++ vtable hierarchy. */
1419 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1420 0, /* rightshift */
1421 0, /* size (0 = byte, 1 = short, 2 = long) */
1422 0, /* bitsize */
1423 FALSE, /* pc_relative */
1424 0, /* bitpos */
1425 complain_overflow_dont, /* complain_on_overflow */
1426 NULL, /* special_function */
1427 "R_PPC_GNU_VTINHERIT", /* name */
1428 FALSE, /* partial_inplace */
1429 0, /* src_mask */
1430 0, /* dst_mask */
1431 FALSE), /* pcrel_offset */
1432
1433 /* GNU extension to record C++ vtable member usage. */
1434 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1435 0, /* rightshift */
1436 0, /* size (0 = byte, 1 = short, 2 = long) */
1437 0, /* bitsize */
1438 FALSE, /* pc_relative */
1439 0, /* bitpos */
1440 complain_overflow_dont, /* complain_on_overflow */
1441 NULL, /* special_function */
1442 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM
1443 FALSE, /* partial_inplace */
1444 0, /* src_mask */
25dbc73a 1445 0, /* dst_mask */
7619e7c7
AM
1446 FALSE), /* pcrel_offset */
1447
25dbc73a
AM
1448 /* Phony reloc to handle AIX style TOC entries. */
1449 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM
1450 0, /* rightshift */
1451 1, /* size (0 = byte, 1 = short, 2 = long) */
1452 16, /* bitsize */
1453 FALSE, /* pc_relative */
1454 0, /* bitpos */
25dbc73a 1455 complain_overflow_signed, /* complain_on_overflow */
7619e7c7 1456 bfd_elf_generic_reloc, /* special_function */
25dbc73a 1457 "R_PPC_TOC16", /* name */
7619e7c7
AM
1458 FALSE, /* partial_inplace */
1459 0, /* src_mask */
1460 0xffff, /* dst_mask */
1461 FALSE), /* pcrel_offset */
25dbc73a
AM
1462};
1463\f
1464/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1465
1466static void
1467ppc_elf_howto_init (void)
1468{
1469 unsigned int i, type;
1470
1471 for (i = 0;
1472 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1473 i++)
1474 {
1475 type = ppc_elf_howto_raw[i].type;
1476 if (type >= (sizeof (ppc_elf_howto_table)
1477 / sizeof (ppc_elf_howto_table[0])))
1478 abort ();
1479 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1480 }
1481}
1482
1483static reloc_howto_type *
1484ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1485 bfd_reloc_code_real_type code)
1486{
1487 enum elf_ppc_reloc_type r;
1488
1489 /* Initialize howto table if not already done. */
1490 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1491 ppc_elf_howto_init ();
1492
1493 switch (code)
1494 {
1495 default:
1496 return NULL;
1497
1498 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1499 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1500 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1501 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1502 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1503 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1504 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1505 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1506 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1507 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1508 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1509 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1510 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1511 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1512 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1513 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1514 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1515 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1516 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1517 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1518 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1519 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1520 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1521 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1522 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1523 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1524 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1525 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1526 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1527 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1528 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1529 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1530 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1531 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1532 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1533 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1534 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1535 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1536 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1537 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1538 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1539 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1540 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1541 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1542 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1543 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1544 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1545 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1546 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1547 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1548 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1549 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1550 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1551 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1552 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1553 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1554 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1555 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1556 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1557 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1558 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1559 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1560 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1561 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1562 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1563 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1564 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1565 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1566 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1567 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1568 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1569 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1570 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1571 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1572 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1573 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1574 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1575 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1576 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
d7128ce4
AM
1577 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1578 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1579 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1580 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
25dbc73a
AM
1581 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1582 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1583 }
1584
1585 return ppc_elf_howto_table[r];
1586};
1587
157090f7
AM
1588static reloc_howto_type *
1589ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1590 const char *r_name)
1591{
1592 unsigned int i;
1593
1594 for (i = 0;
1595 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1596 i++)
1597 if (ppc_elf_howto_raw[i].name != NULL
1598 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1599 return &ppc_elf_howto_raw[i];
1600
1601 return NULL;
1602}
1603
25dbc73a
AM
1604/* Set the howto pointer for a PowerPC ELF reloc. */
1605
1606static void
1607ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1608 arelent *cache_ptr,
1609 Elf_Internal_Rela *dst)
1610{
1611 /* Initialize howto table if not already done. */
1612 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1613 ppc_elf_howto_init ();
1614
1615 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1616 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
375de94a
AM
1617
1618 /* Just because the above assert didn't trigger doesn't mean that
1619 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1620 if (!cache_ptr->howto)
1621 {
1622 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1623 abfd, ELF32_R_TYPE (dst->r_info));
1624 bfd_set_error (bfd_error_bad_value);
1625
1626 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1627 }
25dbc73a
AM
1628}
1629
d7128ce4 1630/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM
1631
1632static bfd_reloc_status_type
1633ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1634 arelent *reloc_entry,
1635 asymbol *symbol,
1636 void *data ATTRIBUTE_UNUSED,
1637 asection *input_section,
1638 bfd *output_bfd,
1639 char **error_message ATTRIBUTE_UNUSED)
1640{
1641 bfd_vma relocation;
1642
1643 if (output_bfd != NULL)
1644 {
1645 reloc_entry->address += input_section->output_offset;
1646 return bfd_reloc_ok;
1647 }
1648
1649 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1650 return bfd_reloc_outofrange;
1651
1652 if (bfd_is_com_section (symbol->section))
1653 relocation = 0;
1654 else
1655 relocation = symbol->value;
1656
1657 relocation += symbol->section->output_section->vma;
1658 relocation += symbol->section->output_offset;
1659 relocation += reloc_entry->addend;
d7128ce4
AM
1660 if (reloc_entry->howto->pc_relative)
1661 relocation -= reloc_entry->address;
25dbc73a
AM
1662
1663 reloc_entry->addend += (relocation & 0x8000) << 1;
1664
1665 return bfd_reloc_continue;
1666}
1667
1668static bfd_reloc_status_type
1669ppc_elf_unhandled_reloc (bfd *abfd,
1670 arelent *reloc_entry,
1671 asymbol *symbol,
1672 void *data,
1673 asection *input_section,
1674 bfd *output_bfd,
1675 char **error_message)
1676{
1677 /* If this is a relocatable link (output_bfd test tells us), just
1678 call the generic function. Any adjustment will be done at final
1679 link time. */
1680 if (output_bfd != NULL)
1681 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1682 input_section, output_bfd, error_message);
1683
1684 if (error_message != NULL)
1685 {
1686 static char buf[60];
1687 sprintf (buf, _("generic linker can't handle %s"),
1688 reloc_entry->howto->name);
1689 *error_message = buf;
1690 }
1691 return bfd_reloc_dangerous;
1692}
1693\f
1694/* Sections created by the linker. */
1695
1696typedef struct elf_linker_section
1697{
c9a2f333 1698 /* Pointer to the bfd section. */
25dbc73a 1699 asection *section;
c9a2f333
AM
1700 /* Section name. */
1701 const char *name;
1702 /* Associated bss section name. */
1703 const char *bss_name;
1704 /* Associated symbol name. */
1705 const char *sym_name;
046183de
AM
1706 /* Associated symbol. */
1707 struct elf_link_hash_entry *sym;
25dbc73a
AM
1708} elf_linker_section_t;
1709
1710/* Linked list of allocated pointer entries. This hangs off of the
1711 symbol lists, and provides allows us to return different pointers,
1712 based on different addend's. */
1713
1714typedef struct elf_linker_section_pointers
1715{
1716 /* next allocated pointer for this symbol */
1717 struct elf_linker_section_pointers *next;
1718 /* offset of pointer from beginning of section */
1719 bfd_vma offset;
1720 /* addend used */
1721 bfd_vma addend;
1722 /* which linker section this is */
1723 elf_linker_section_t *lsect;
25dbc73a
AM
1724} elf_linker_section_pointers_t;
1725
1726struct ppc_elf_obj_tdata
1727{
1728 struct elf_obj_tdata elf;
1729
1730 /* A mapping from local symbols to offsets into the various linker
1731 sections added. This is index by the symbol index. */
1732 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM
1733
1734 /* Flags used to auto-detect plt type. */
1735 unsigned int makes_plt_call : 1;
1736 unsigned int has_rel16 : 1;
25dbc73a
AM
1737};
1738
1739#define ppc_elf_tdata(bfd) \
1740 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 1741
25dbc73a
AM
1742#define elf_local_ptr_offsets(bfd) \
1743 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 1744
0c8d6e5c
AM
1745#define is_ppc_elf(bfd) \
1746 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1747 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1748
25dbc73a 1749/* Override the generic function because we store some extras. */
7619e7c7 1750
25dbc73a
AM
1751static bfd_boolean
1752ppc_elf_mkobject (bfd *abfd)
1753{
0ffa91dd
NC
1754 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1755 PPC32_ELF_TDATA);
25dbc73a 1756}
7619e7c7 1757
25dbc73a
AM
1758/* Fix bad default arch selected for a 32 bit input bfd when the
1759 default is 64 bit. */
7619e7c7 1760
25dbc73a
AM
1761static bfd_boolean
1762ppc_elf_object_p (bfd *abfd)
1763{
1764 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1765 {
1766 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 1767
25dbc73a
AM
1768 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1769 {
1770 /* Relies on arch after 64 bit default being 32 bit default. */
1771 abfd->arch_info = abfd->arch_info->next;
1772 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1773 }
1774 }
1775 return TRUE;
1776}
7619e7c7 1777
25dbc73a 1778/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 1779
25dbc73a
AM
1780static bfd_boolean
1781ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1782{
1783 BFD_ASSERT (!elf_flags_init (abfd)
1784 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 1785
25dbc73a
AM
1786 elf_elfheader (abfd)->e_flags = flags;
1787 elf_flags_init (abfd) = TRUE;
1788 return TRUE;
1789}
1790
25dbc73a 1791/* Support for core dump NOTE sections. */
deaaf2f3 1792
b34976b6 1793static bfd_boolean
25dbc73a 1794ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 1795{
25dbc73a
AM
1796 int offset;
1797 unsigned int size;
252b5132 1798
25dbc73a
AM
1799 switch (note->descsz)
1800 {
1801 default:
1802 return FALSE;
252b5132 1803
25dbc73a
AM
1804 case 268: /* Linux/PPC. */
1805 /* pr_cursig */
1806 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 1807
25dbc73a
AM
1808 /* pr_pid */
1809 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 1810
25dbc73a
AM
1811 /* pr_reg */
1812 offset = 72;
1813 size = 192;
deaaf2f3 1814
25dbc73a
AM
1815 break;
1816 }
deaaf2f3 1817
25dbc73a
AM
1818 /* Make a ".reg/999" section. */
1819 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1820 size, note->descpos + offset);
1821}
252b5132 1822
25dbc73a
AM
1823static bfd_boolean
1824ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1825{
1826 switch (note->descsz)
deaaf2f3 1827 {
25dbc73a
AM
1828 default:
1829 return FALSE;
deaaf2f3 1830
25dbc73a
AM
1831 case 128: /* Linux/PPC elf_prpsinfo. */
1832 elf_tdata (abfd)->core_program
1833 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1834 elf_tdata (abfd)->core_command
1835 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1836 }
9abc968f 1837
25dbc73a
AM
1838 /* Note that for some reason, a spurious space is tacked
1839 onto the end of the args in some (at least one anyway)
1840 implementations, so strip it off if it exists. */
70bccea4 1841
25dbc73a
AM
1842 {
1843 char *command = elf_tdata (abfd)->core_command;
1844 int n = strlen (command);
70bccea4 1845
25dbc73a
AM
1846 if (0 < n && command[n - 1] == ' ')
1847 command[n - 1] = '\0';
1848 }
deaaf2f3 1849
25dbc73a
AM
1850 return TRUE;
1851}
deaaf2f3 1852
183e98be
AM
1853static char *
1854ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1855{
1856 switch (note_type)
1857 {
1858 default:
1859 return NULL;
1860
1861 case NT_PRPSINFO:
1862 {
1863 char data[128];
1864 va_list ap;
1865
1866 va_start (ap, note_type);
1867 memset (data, 0, 32);
1868 strncpy (data + 32, va_arg (ap, const char *), 16);
1869 strncpy (data + 48, va_arg (ap, const char *), 80);
1870 va_end (ap);
1871 return elfcore_write_note (abfd, buf, bufsiz,
1872 "CORE", note_type, data, sizeof (data));
1873 }
1874
1875 case NT_PRSTATUS:
1876 {
1877 char data[268];
1878 va_list ap;
1879 long pid;
1880 int cursig;
1881 const void *greg;
1882
1883 va_start (ap, note_type);
1884 memset (data, 0, 72);
1885 pid = va_arg (ap, long);
1886 bfd_put_32 (abfd, pid, data + 24);
1887 cursig = va_arg (ap, int);
1888 bfd_put_16 (abfd, cursig, data + 12);
1889 greg = va_arg (ap, const void *);
1890 memcpy (data + 72, greg, 192);
1891 memset (data + 264, 0, 4);
1892 va_end (ap);
1893 return elfcore_write_note (abfd, buf, bufsiz,
1894 "CORE", note_type, data, sizeof (data));
1895 }
1896 }
1897}
1898
25dbc73a
AM
1899/* Return address for Ith PLT stub in section PLT, for relocation REL
1900 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 1901
25dbc73a
AM
1902static bfd_vma
1903ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1904 const asection *plt ATTRIBUTE_UNUSED,
1905 const arelent *rel)
1906{
1907 return rel->address;
1908}
deaaf2f3 1909
25dbc73a 1910/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
1911 is called when bfd_section_from_shdr finds a section with an unknown
1912 type. */
deaaf2f3 1913
25dbc73a 1914static bfd_boolean
6dc132d9
L
1915ppc_elf_section_from_shdr (bfd *abfd,
1916 Elf_Internal_Shdr *hdr,
1917 const char *name,
1918 int shindex)
25dbc73a
AM
1919{
1920 asection *newsect;
1921 flagword flags;
d1c6de6f 1922
6dc132d9 1923 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 1924 return FALSE;
deaaf2f3 1925
25dbc73a
AM
1926 newsect = hdr->bfd_section;
1927 flags = bfd_get_section_flags (abfd, newsect);
1928 if (hdr->sh_flags & SHF_EXCLUDE)
1929 flags |= SEC_EXCLUDE;
9abc968f 1930
25dbc73a
AM
1931 if (hdr->sh_type == SHT_ORDERED)
1932 flags |= SEC_SORT_ENTRIES;
d1c6de6f 1933
25dbc73a
AM
1934 bfd_set_section_flags (abfd, newsect, flags);
1935 return TRUE;
1936}
1937
1938/* Set up any other section flags and such that may be necessary. */
1939
1940static bfd_boolean
1941ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1942 Elf_Internal_Shdr *shdr,
1943 asection *asect)
1944{
d30e8e7c 1945 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
25dbc73a
AM
1946 shdr->sh_flags |= SHF_EXCLUDE;
1947
1948 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1949 shdr->sh_type = SHT_ORDERED;
1950
1951 return TRUE;
1952}
1953
1954/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1955 need to bump up the number of section headers. */
1956
1957static int
a6b96beb
AM
1958ppc_elf_additional_program_headers (bfd *abfd,
1959 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM
1960{
1961 asection *s;
1962 int ret = 0;
d1c6de6f 1963
25dbc73a
AM
1964 s = bfd_get_section_by_name (abfd, ".sbss2");
1965 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1966 ++ret;
d1c6de6f 1967
25dbc73a
AM
1968 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1969 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1970 ++ret;
deaaf2f3 1971
25dbc73a
AM
1972 return ret;
1973}
deaaf2f3 1974
25dbc73a
AM
1975/* Add extra PPC sections -- Note, for now, make .sbss2 and
1976 .PPC.EMB.sbss0 a normal section, and not a bss section so
1977 that the linker doesn't crater when trying to make more than
1978 2 sections. */
e656e369 1979
b35d266b 1980static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 1981{
0112cd26
NC
1982 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1983 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1984 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1985 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1986 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1987 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1988 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
1989 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1990 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1991 { NULL, 0, 0, 0, 0 }
7f4d3958
L
1992};
1993
551b43fd
AM
1994/* This is what we want for new plt/got. */
1995static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 1996 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM
1997
1998static const struct bfd_elf_special_section *
1999ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 2000{
b35d266b 2001 const struct bfd_elf_special_section *ssect;
551b43fd
AM
2002
2003 /* See if this is one of the special sections. */
2004 if (sec->name == NULL)
2005 return NULL;
2006
2007 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2008 sec->use_rela_p);
2009 if (ssect != NULL)
2010 {
2011 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2012 ssect = &ppc_alt_plt;
2013 return ssect;
2014 }
2015
2016 return _bfd_elf_get_sec_type_attr (abfd, sec);
2017}
25dbc73a
AM
2018\f
2019/* Very simple linked list structure for recording apuinfo values. */
2020typedef struct apuinfo_list
2021{
2022 struct apuinfo_list *next;
2023 unsigned long value;
2024}
2025apuinfo_list;
e656e369 2026
25dbc73a 2027static apuinfo_list *head;
deaaf2f3 2028
deaaf2f3 2029
25dbc73a
AM
2030static void
2031apuinfo_list_init (void)
2032{
2033 head = NULL;
2034}
9abc968f 2035
25dbc73a
AM
2036static void
2037apuinfo_list_add (unsigned long value)
2038{
2039 apuinfo_list *entry = head;
deaaf2f3 2040
25dbc73a
AM
2041 while (entry != NULL)
2042 {
2043 if (entry->value == value)
2044 return;
2045 entry = entry->next;
2046 }
b4a38de6 2047
25dbc73a
AM
2048 entry = bfd_malloc (sizeof (* entry));
2049 if (entry == NULL)
2050 return;
e656e369 2051
25dbc73a
AM
2052 entry->value = value;
2053 entry->next = head;
2054 head = entry;
2055}
9abc968f 2056
25dbc73a
AM
2057static unsigned
2058apuinfo_list_length (void)
2059{
2060 apuinfo_list *entry;
2061 unsigned long count;
9abc968f 2062
25dbc73a
AM
2063 for (entry = head, count = 0;
2064 entry;
2065 entry = entry->next)
2066 ++ count;
e656e369 2067
25dbc73a
AM
2068 return count;
2069}
eea6121a 2070
25dbc73a
AM
2071static inline unsigned long
2072apuinfo_list_element (unsigned long number)
2073{
2074 apuinfo_list * entry;
e656e369 2075
25dbc73a
AM
2076 for (entry = head;
2077 entry && number --;
2078 entry = entry->next)
2079 ;
252b5132 2080
25dbc73a
AM
2081 return entry ? entry->value : 0;
2082}
2083
2084static void
2085apuinfo_list_finish (void)
2086{
2087 apuinfo_list *entry;
2088
2089 for (entry = head; entry;)
252b5132 2090 {
25dbc73a
AM
2091 apuinfo_list *next = entry->next;
2092 free (entry);
2093 entry = next;
2094 }
9abc968f 2095
25dbc73a
AM
2096 head = NULL;
2097}
9abc968f 2098
25dbc73a
AM
2099#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2100#define APUINFO_LABEL "APUinfo"
9abc968f 2101
25dbc73a
AM
2102/* Scan the input BFDs and create a linked list of
2103 the APUinfo values that will need to be emitted. */
9abc968f 2104
25dbc73a
AM
2105static void
2106ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2107{
2108 bfd *ibfd;
2109 asection *asec;
2110 char *buffer;
2111 unsigned num_input_sections;
2112 bfd_size_type output_section_size;
2113 unsigned i;
2114 unsigned num_entries;
2115 unsigned long offset;
2116 unsigned long length;
2117 const char *error_message = NULL;
9abc968f 2118
25dbc73a
AM
2119 if (link_info == NULL)
2120 return;
9abc968f 2121
25dbc73a
AM
2122 /* Scan the input bfds, looking for apuinfo sections. */
2123 num_input_sections = 0;
2124 output_section_size = 0;
252b5132 2125
25dbc73a 2126 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2127 {
25dbc73a
AM
2128 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2129 if (asec)
252b5132 2130 {
25dbc73a
AM
2131 ++ num_input_sections;
2132 output_section_size += asec->size;
252b5132 2133 }
252b5132
RH
2134 }
2135
25dbc73a
AM
2136 /* We need at least one input sections
2137 in order to make merging worthwhile. */
2138 if (num_input_sections < 1)
2139 return;
deaaf2f3 2140
25dbc73a
AM
2141 /* Just make sure that the output section exists as well. */
2142 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2143 if (asec == NULL)
2144 return;
252b5132 2145
25dbc73a
AM
2146 /* Allocate a buffer for the contents of the input sections. */
2147 buffer = bfd_malloc (output_section_size);
2148 if (buffer == NULL)
2149 return;
252b5132 2150
25dbc73a
AM
2151 offset = 0;
2152 apuinfo_list_init ();
252b5132 2153
25dbc73a
AM
2154 /* Read in the input sections contents. */
2155 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2156 {
25dbc73a
AM
2157 unsigned long datum;
2158 char *ptr;
252b5132 2159
25dbc73a
AM
2160 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2161 if (asec == NULL)
2162 continue;
252b5132 2163
25dbc73a
AM
2164 length = asec->size;
2165 if (length < 24)
2166 {
2167 error_message = _("corrupt or empty %s section in %B");
2168 goto fail;
2169 }
252b5132 2170
25dbc73a
AM
2171 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2172 || (bfd_bread (buffer + offset, length, ibfd) != length))
2173 {
2174 error_message = _("unable to read in %s section from %B");
2175 goto fail;
2176 }
252b5132 2177
25dbc73a
AM
2178 /* Process the contents of the section. */
2179 ptr = buffer + offset;
2180 error_message = _("corrupt %s section in %B");
252b5132 2181
25dbc73a
AM
2182 /* Verify the contents of the header. Note - we have to
2183 extract the values this way in order to allow for a
2184 host whose endian-ness is different from the target. */
2185 datum = bfd_get_32 (ibfd, ptr);
2186 if (datum != sizeof APUINFO_LABEL)
2187 goto fail;
252b5132 2188
25dbc73a
AM
2189 datum = bfd_get_32 (ibfd, ptr + 8);
2190 if (datum != 0x2)
2191 goto fail;
252b5132 2192
25dbc73a
AM
2193 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2194 goto fail;
252b5132 2195
25dbc73a
AM
2196 /* Get the number of bytes used for apuinfo entries. */
2197 datum = bfd_get_32 (ibfd, ptr + 4);
2198 if (datum + 20 != length)
2199 goto fail;
2200
2201 /* Make sure that we do not run off the end of the section. */
2202 if (offset + length > output_section_size)
2203 goto fail;
2204
2205 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2206 for (i = 0; i < datum; i += 4)
2207 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2208
2209 /* Update the offset. */
2210 offset += length;
252b5132
RH
2211 }
2212
25dbc73a 2213 error_message = NULL;
252b5132 2214
25dbc73a
AM
2215 /* Compute the size of the output section. */
2216 num_entries = apuinfo_list_length ();
2217 output_section_size = 20 + num_entries * 4;
252b5132 2218
25dbc73a
AM
2219 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2220
2221 if (! bfd_set_section_size (abfd, asec, output_section_size))
2222 ibfd = abfd,
2223 error_message = _("warning: unable to set size of %s section in %B");
2224
2225 fail:
2226 free (buffer);
2227
2228 if (error_message)
2229 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2230}
252b5132 2231
25dbc73a
AM
2232/* Prevent the output section from accumulating the input sections'
2233 contents. We have already stored this in our linked list structure. */
252b5132 2234
25dbc73a
AM
2235static bfd_boolean
2236ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2237 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM
2238 asection *asec,
2239 bfd_byte *contents ATTRIBUTE_UNUSED)
2240{
2241 return (apuinfo_list_length ()
2242 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
252b5132
RH
2243}
2244
25dbc73a
AM
2245/* Finally we can generate the output section. */
2246
2247static void
2248ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2249{
25dbc73a
AM
2250 bfd_byte *buffer;
2251 asection *asec;
2252 unsigned i;
2253 unsigned num_entries;
2254 bfd_size_type length;
7619e7c7 2255
25dbc73a
AM
2256 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2257 if (asec == NULL)
2258 return;
2259
2260 if (apuinfo_list_length () == 0)
2261 return;
2262
2263 length = asec->size;
2264 if (length < 20)
2265 return;
2266
2267 buffer = bfd_malloc (length);
2268 if (buffer == NULL)
7619e7c7 2269 {
25dbc73a
AM
2270 (*_bfd_error_handler)
2271 (_("failed to allocate space for new APUinfo section."));
2272 return;
7619e7c7 2273 }
7619e7c7 2274
25dbc73a
AM
2275 /* Create the apuinfo header. */
2276 num_entries = apuinfo_list_length ();
2277 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2278 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2279 bfd_put_32 (abfd, 0x2, buffer + 8);
2280 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2281
25dbc73a
AM
2282 length = 20;
2283 for (i = 0; i < num_entries; i++)
feee612b 2284 {
25dbc73a
AM
2285 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2286 length += 4;
feee612b 2287 }
feee612b 2288
25dbc73a
AM
2289 if (length != asec->size)
2290 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2291
25dbc73a
AM
2292 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2293 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2294
25dbc73a
AM
2295 free (buffer);
2296
2297 apuinfo_list_finish ();
252b5132 2298}
25dbc73a 2299\f
7382d32a
AM
2300static bfd_boolean
2301is_pic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2302{
2303 bfd_byte buf[16];
2304 unsigned int insn;
2305
2306 if (!bfd_get_section_contents (abfd, glink, buf, off, 16))
2307 return FALSE;
2308
2309 insn = bfd_get_32 (abfd, buf);
2310 if ((insn & 0xffff0000) == LWZ_11_30
2311 && bfd_get_32 (abfd, buf + 4) == MTCTR_11
2312 && bfd_get_32 (abfd, buf + 8) == BCTR)
2313 return TRUE;
2314
2315 if ((insn & 0xffff0000) == ADDIS_11_30
2316 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2317 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2318 && bfd_get_32 (abfd, buf + 12) == BCTR)
2319 return TRUE;
2320 return FALSE;
2321}
2322
468392fb
AM
2323static bfd_boolean
2324section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2325{
2326 bfd_vma vma = *(bfd_vma *) ptr;
2327 return ((section->flags & SEC_ALLOC) != 0
2328 && section->vma <= vma
2329 && vma < section->vma + section->size);
2330}
2331
2332static long
2333ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2334 long dynsymcount, asymbol **dynsyms,
2335 asymbol **ret)
2336{
2337 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2338 asection *plt, *relplt, *dynamic, *glink;
2339 bfd_vma glink_vma = 0;
2340 bfd_vma resolv_vma = 0;
2341 bfd_vma stub_vma;
2342 asymbol *s;
2343 arelent *p;
2344 long count, i;
2345 size_t size;
2346 char *names;
2347 bfd_byte buf[4];
2348
2349 *ret = NULL;
2350
2351 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2352 return 0;
2353
2354 if (dynsymcount <= 0)
2355 return 0;
2356
2357 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2358 if (relplt == NULL)
2359 return 0;
2360
2361 plt = bfd_get_section_by_name (abfd, ".plt");
2362 if (plt == NULL)
2363 return 0;
2364
2365 /* Call common code to handle old-style executable PLTs. */
2366 if (elf_section_flags (plt) & SHF_EXECINSTR)
2367 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2368 dynsymcount, dynsyms, ret);
2369
2370 /* If this object was prelinked, the prelinker stored the address
2371 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2372 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2373 if (dynamic != NULL)
2374 {
2375 bfd_byte *dynbuf, *extdyn, *extdynend;
2376 size_t extdynsize;
2377 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2378
2379 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2380 return -1;
2381
2382 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2383 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2384
2385 extdyn = dynbuf;
2386 extdynend = extdyn + dynamic->size;
2387 for (; extdyn < extdynend; extdyn += extdynsize)
2388 {
2389 Elf_Internal_Dyn dyn;
2390 (*swap_dyn_in) (abfd, extdyn, &dyn);
2391
2392 if (dyn.d_tag == DT_NULL)
2393 break;
2394
2395 if (dyn.d_tag == DT_PPC_GOT)
2396 {
2397 unsigned int g_o_t = dyn.d_un.d_val;
2398 asection *got = bfd_get_section_by_name (abfd, ".got");
2399 if (got != NULL
2400 && bfd_get_section_contents (abfd, got, buf,
2401 g_o_t - got->vma + 4, 4))
2402 glink_vma = bfd_get_32 (abfd, buf);
2403 break;
2404 }
2405 }
2406 free (dynbuf);
2407 }
2408
2409 /* Otherwise we read the first plt entry. */
2410 if (glink_vma == 0)
2411 {
2412 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2413 glink_vma = bfd_get_32 (abfd, buf);
2414 }
2415
2416 if (glink_vma == 0)
2417 return 0;
2418
2419 /* The .glink section usually does not survive the final
2420 link; search for the section (usually .text) where the
2421 glink stubs now reside. */
2422 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2423 if (glink == NULL)
2424 return 0;
2425
2426 /* Determine glink PLT resolver by reading the relative branch
2427 from the first glink stub. */
2428 if (bfd_get_section_contents (abfd, glink, buf,
2429 glink_vma - glink->vma, 4))
2430 {
2431 unsigned int insn = bfd_get_32 (abfd, buf);
2432
2433 /* The first glink stub may either branch to the resolver ... */
2434 insn ^= B;
2435 if ((insn & ~0x3fffffc) == 0)
2436 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2437
2438 /* ... or fall through a bunch of NOPs. */
2439 else if ((insn ^ B ^ NOP) == 0)
2440 for (i = 4;
2441 bfd_get_section_contents (abfd, glink, buf,
2442 glink_vma - glink->vma + i, 4);
2443 i += 4)
2444 if (bfd_get_32 (abfd, buf) != NOP)
2445 {
2446 resolv_vma = glink_vma + i;
2447 break;
2448 }
2449 }
2450
7382d32a
AM
2451 count = relplt->size / sizeof (Elf32_External_Rela);
2452 stub_vma = glink_vma - (bfd_vma) count * 16;
2453 /* If the stubs are those for -shared/-pie then we might have
2454 multiple stubs for each plt entry. If that is the case then
2455 there is no way to associate stubs with their plt entries short
2456 of figuring out the GOT pointer value used in the stub. */
2457 if (!bfd_get_section_contents (abfd, glink, buf,
2458 stub_vma - glink->vma, 4)
2459 || ((bfd_get_32 (abfd, buf) & 0xffff0000) != LIS_11
2460 && is_pic_glink_stub (abfd, glink, stub_vma - glink->vma - 16)))
2461 return 0;
2462
468392fb
AM
2463 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2464 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2465 return -1;
2466
468392fb
AM
2467 size = count * sizeof (asymbol);
2468 p = relplt->relocation;
2469 for (i = 0; i < count; i++, p++)
2470 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2471
2472 size += sizeof (asymbol) + sizeof ("__glink");
2473
2474 if (resolv_vma)
2475 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2476
2477 s = *ret = bfd_malloc (size);
2478 if (s == NULL)
2479 return -1;
2480
2481 names = (char *) (s + count + 1 + (resolv_vma != 0));
2482 p = relplt->relocation;
2483 for (i = 0; i < count; i++, p++)
2484 {
2485 size_t len;
2486
2487 *s = **p->sym_ptr_ptr;
2488 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2489 we are defining a symbol, ensure one of them is set. */
2490 if ((s->flags & BSF_LOCAL) == 0)
2491 s->flags |= BSF_GLOBAL;
6ba2a415 2492 s->flags |= BSF_SYNTHETIC;
468392fb
AM
2493 s->section = glink;
2494 s->value = stub_vma - glink->vma;
2495 s->name = names;
2496 s->udata.p = NULL;
2497 len = strlen ((*p->sym_ptr_ptr)->name);
2498 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2499 names += len;
2500 memcpy (names, "@plt", sizeof ("@plt"));
2501 names += sizeof ("@plt");
2502 ++s;
2503 stub_vma += 16;
2504 }
2505
2506 /* Add a symbol at the start of the glink branch table. */
86a4952b 2507 memset (s, 0, sizeof *s);
468392fb 2508 s->the_bfd = abfd;
6ba2a415 2509 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
2510 s->section = glink;
2511 s->value = glink_vma - glink->vma;
2512 s->name = names;
2513 memcpy (names, "__glink", sizeof ("__glink"));
2514 names += sizeof ("__glink");
2515 s++;
2516 count++;
2517
2518 if (resolv_vma)
2519 {
2520 /* Add a symbol for the glink PLT resolver. */
86a4952b 2521 memset (s, 0, sizeof *s);
468392fb 2522 s->the_bfd = abfd;
6ba2a415 2523 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
2524 s->section = glink;
2525 s->value = resolv_vma - glink->vma;
2526 s->name = names;
2527 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2528 names += sizeof ("__glink_PLTresolve");
2529 s++;
2530 count++;
2531 }
2532
2533 return count;
2534}
2535\f
25dbc73a
AM
2536/* The following functions are specific to the ELF linker, while
2537 functions above are used generally. They appear in this file more
2538 or less in the order in which they are called. eg.
2539 ppc_elf_check_relocs is called early in the link process,
2540 ppc_elf_finish_dynamic_sections is one of the last functions
2541 called. */
252b5132 2542
25dbc73a
AM
2543/* The PPC linker needs to keep track of the number of relocs that it
2544 decides to copy as dynamic relocs in check_relocs for each symbol.
2545 This is so that it can later discard them if they are found to be
2546 unnecessary. We store the information in a field extending the
2547 regular ELF linker hash table. */
ae9a127f 2548
25dbc73a 2549struct ppc_elf_dyn_relocs
252b5132 2550{
25dbc73a 2551 struct ppc_elf_dyn_relocs *next;
252b5132 2552
25dbc73a
AM
2553 /* The input section of the reloc. */
2554 asection *sec;
252b5132 2555
25dbc73a
AM
2556 /* Total number of relocs copied for the input section. */
2557 bfd_size_type count;
252b5132 2558
25dbc73a
AM
2559 /* Number of pc-relative relocs copied for the input section. */
2560 bfd_size_type pc_count;
2561};
252b5132 2562
a6aa5195
AM
2563/* Track PLT entries needed for a given symbol. We might need more
2564 than one glink entry per symbol. */
2565struct plt_entry
2566{
2567 struct plt_entry *next;
2568
2569 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2570 This field stores the offset into .got2 used to initialise the
2571 GOT pointer reg. It will always be at least 32768 (and for
2572 current gcc this is the only offset used). */
2573 bfd_vma addend;
2574
2575 /* The .got2 section. */
2576 asection *sec;
2577
2578 /* PLT refcount or offset. */
2579 union
2580 {
2581 bfd_signed_vma refcount;
2582 bfd_vma offset;
2583 } plt;
2584
2585 /* .glink stub offset. */
2586 bfd_vma glink_offset;
2587};
2588
1d483afe 2589/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM
2590 selects those that must be copied when linking a shared library,
2591 even when the symbol is local. */
252b5132 2592
1d483afe
AM
2593static int
2594must_be_dyn_reloc (struct bfd_link_info *info,
2595 enum elf_ppc_reloc_type r_type)
2596{
2597 switch (r_type)
2598 {
2599 default:
2600 return 1;
2601
2602 case R_PPC_REL24:
2603 case R_PPC_REL14:
2604 case R_PPC_REL14_BRTAKEN:
2605 case R_PPC_REL14_BRNTAKEN:
2606 case R_PPC_REL32:
2607 return 0;
2608
2609 case R_PPC_TPREL32:
2610 case R_PPC_TPREL16:
2611 case R_PPC_TPREL16_LO:
2612 case R_PPC_TPREL16_HI:
2613 case R_PPC_TPREL16_HA:
2614 return !info->executable;
2615 }
2616}
252b5132 2617
25dbc73a
AM
2618/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2619 copying dynamic variables from a shared lib into an app's dynbss
2620 section, and instead use a dynamic relocation to point into the
2621 shared lib. */
2622#define ELIMINATE_COPY_RELOCS 1
252b5132 2623
25dbc73a 2624/* PPC ELF linker hash entry. */
252b5132 2625
25dbc73a
AM
2626struct ppc_elf_link_hash_entry
2627{
2628 struct elf_link_hash_entry elf;
252b5132 2629
25dbc73a
AM
2630 /* If this symbol is used in the linker created sections, the processor
2631 specific backend uses this field to map the field into the offset
2632 from the beginning of the section. */
2633 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 2634
25dbc73a
AM
2635 /* Track dynamic relocs copied for this symbol. */
2636 struct ppc_elf_dyn_relocs *dyn_relocs;
252b5132 2637
25dbc73a
AM
2638 /* Contexts in which symbol is used in the GOT (or TOC).
2639 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2640 corresponding relocs are encountered during check_relocs.
2641 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2642 indicate the corresponding GOT entry type is not needed. */
2643#define TLS_GD 1 /* GD reloc. */
2644#define TLS_LD 2 /* LD reloc. */
2645#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2646#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2647#define TLS_TLS 16 /* Any TLS reloc. */
2648#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2649 char tls_mask;
4dc4a9a5
DJ
2650
2651 /* Nonzero if we have seen a small data relocation referring to this
2652 symbol. */
2653 unsigned char has_sda_refs;
25dbc73a 2654};
252b5132 2655
25dbc73a
AM
2656#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2657
2658/* PPC ELF linker hash table. */
2659
2660struct ppc_elf_link_hash_table
2661{
2662 struct elf_link_hash_table elf;
2663
2664 /* Short-cuts to get to dynamic linker sections. */
2665 asection *got;
2666 asection *relgot;
d7128ce4 2667 asection *glink;
25dbc73a
AM
2668 asection *plt;
2669 asection *relplt;
2670 asection *dynbss;
2671 asection *relbss;
2672 asection *dynsbss;
2673 asection *relsbss;
c9a2f333 2674 elf_linker_section_t sdata[2];
25dbc73a
AM
2675 asection *sbss;
2676
016687f8
AM
2677 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2678 asection *srelplt2;
2679
2680 /* The .got.plt section (VxWorks only)*/
2681 asection *sgotplt;
2682
1d483afe 2683 /* Shortcut to __tls_get_addr. */
25dbc73a 2684 struct elf_link_hash_entry *tls_get_addr;
252b5132 2685
016687f8
AM
2686 /* The bfd that forced an old-style PLT. */
2687 bfd *old_bfd;
2688
25dbc73a
AM
2689 /* TLS local dynamic got entry handling. */
2690 union {
2691 bfd_signed_vma refcount;
2692 bfd_vma offset;
2693 } tlsld_got;
252b5132 2694
d7128ce4
AM
2695 /* Offset of PltResolve function in glink. */
2696 bfd_vma glink_pltresolve;
2697
3b36f7e6
AM
2698 /* Size of reserved GOT entries. */
2699 unsigned int got_header_size;
2700 /* Non-zero if allocating the header left a gap. */
2701 unsigned int got_gap;
2702
4a3dc543
RS
2703 /* The type of PLT we have chosen to use. */
2704 enum ppc_elf_plt_type plt_type;
2705
0ba07910
AM
2706 /* Set if we should emit symbols for stubs. */
2707 unsigned int emit_stub_syms:1;
2708
9d8504b1 2709 /* True if the target system is VxWorks. */
016687f8 2710 unsigned int is_vxworks:1;
9d8504b1
PB
2711
2712 /* The size of PLT entries. */
2713 int plt_entry_size;
2714 /* The distance between adjacent PLT slots. */
2715 int plt_slot_size;
2716 /* The size of the first PLT entry. */
2717 int plt_initial_entry_size;
016687f8
AM
2718
2719 /* Small local sym to section mapping cache. */
2720 struct sym_sec_cache sym_sec;
25dbc73a 2721};
252b5132 2722
25dbc73a 2723/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 2724
25dbc73a
AM
2725#define ppc_elf_hash_table(p) \
2726 ((struct ppc_elf_link_hash_table *) (p)->hash)
252b5132 2727
25dbc73a 2728/* Create an entry in a PPC ELF linker hash table. */
252b5132 2729
25dbc73a
AM
2730static struct bfd_hash_entry *
2731ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2732 struct bfd_hash_table *table,
2733 const char *string)
252b5132 2734{
25dbc73a
AM
2735 /* Allocate the structure if it has not already been allocated by a
2736 subclass. */
2737 if (entry == NULL)
2738 {
2739 entry = bfd_hash_allocate (table,
2740 sizeof (struct ppc_elf_link_hash_entry));
2741 if (entry == NULL)
2742 return entry;
2743 }
252b5132 2744
25dbc73a
AM
2745 /* Call the allocation method of the superclass. */
2746 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2747 if (entry != NULL)
2748 {
2749 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2750 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2751 ppc_elf_hash_entry (entry)->tls_mask = 0;
2752 }
252b5132 2753
25dbc73a 2754 return entry;
252b5132 2755}
3dab13f6 2756
25dbc73a 2757/* Create a PPC ELF linker hash table. */
3dab13f6 2758
25dbc73a
AM
2759static struct bfd_link_hash_table *
2760ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 2761{
25dbc73a 2762 struct ppc_elf_link_hash_table *ret;
3dab13f6 2763
25dbc73a
AM
2764 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2765 if (ret == NULL)
2766 return NULL;
3dab13f6 2767
66eb6687
AM
2768 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2769 ppc_elf_link_hash_newfunc,
2770 sizeof (struct ppc_elf_link_hash_entry)))
3dab13f6 2771 {
25dbc73a
AM
2772 free (ret);
2773 return NULL;
2774 }
58111eb7 2775
a6aa5195
AM
2776 ret->elf.init_plt_refcount.refcount = 0;
2777 ret->elf.init_plt_refcount.glist = NULL;
2778 ret->elf.init_plt_offset.offset = 0;
2779 ret->elf.init_plt_offset.glist = NULL;
2780
c9a2f333
AM
2781 ret->sdata[0].name = ".sdata";
2782 ret->sdata[0].sym_name = "_SDA_BASE_";
2783 ret->sdata[0].bss_name = ".sbss";
2784
2785 ret->sdata[1].name = ".sdata2";
2786 ret->sdata[1].sym_name = "_SDA2_BASE_";
2787 ret->sdata[1].bss_name = ".sbss2";
2788
9d8504b1
PB
2789 ret->plt_entry_size = 12;
2790 ret->plt_slot_size = 8;
2791 ret->plt_initial_entry_size = 72;
9d8504b1 2792
25dbc73a
AM
2793 return &ret->elf.root;
2794}
3dab13f6 2795
9d8504b1 2796/* Create .got and the related sections. */
3dab13f6 2797
25dbc73a
AM
2798static bfd_boolean
2799ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2800{
2801 struct ppc_elf_link_hash_table *htab;
2802 asection *s;
2803 flagword flags;
3dab13f6 2804
25dbc73a
AM
2805 if (!_bfd_elf_create_got_section (abfd, info))
2806 return FALSE;
3dab13f6 2807
25dbc73a
AM
2808 htab = ppc_elf_hash_table (info);
2809 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2810 if (s == NULL)
2811 abort ();
3dab13f6 2812
9d8504b1
PB
2813 if (htab->is_vxworks)
2814 {
2815 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2816 if (!htab->sgotplt)
2817 abort ();
2818 }
2819 else
2820 {
2821 /* The powerpc .got has a blrl instruction in it. Mark it
2822 executable. */
2823 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2824 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2825 if (!bfd_set_section_flags (abfd, s, flags))
2826 return FALSE;
2827 }
3dab13f6 2828
3b36f7e6
AM
2829 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2830 | SEC_LINKER_CREATED | SEC_READONLY);
2831 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
25dbc73a 2832 if (!htab->relgot
25dbc73a
AM
2833 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2834 return FALSE;
3dab13f6 2835
25dbc73a
AM
2836 return TRUE;
2837}
3dab13f6 2838
25dbc73a
AM
2839/* We have to create .dynsbss and .rela.sbss here so that they get mapped
2840 to output sections (just like _bfd_elf_create_dynamic_sections has
2841 to create .dynbss and .rela.bss). */
3dab13f6 2842
25dbc73a
AM
2843static bfd_boolean
2844ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2845{
2846 struct ppc_elf_link_hash_table *htab;
2847 asection *s;
2848 flagword flags;
3dab13f6 2849
25dbc73a 2850 htab = ppc_elf_hash_table (info);
3dab13f6 2851
25dbc73a
AM
2852 if (htab->got == NULL
2853 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
2854 return FALSE;
2855
25dbc73a
AM
2856 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2857 return FALSE;
3dab13f6 2858
d7128ce4
AM
2859 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2860 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2861
2862 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2863 htab->glink = s;
2864 if (s == NULL
2865 || !bfd_set_section_alignment (abfd, s, 4))
2866 return FALSE;
3dab13f6 2867
25dbc73a 2868 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
3b36f7e6
AM
2869 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2870 SEC_ALLOC | SEC_LINKER_CREATED);
2871 htab->dynsbss = s;
3496cb2a 2872 if (s == NULL)
25dbc73a 2873 return FALSE;
3dab13f6 2874
25dbc73a
AM
2875 if (! info->shared)
2876 {
2877 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
d7128ce4 2878 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 2879 htab->relsbss = s;
25dbc73a 2880 if (s == NULL
25dbc73a
AM
2881 || ! bfd_set_section_alignment (abfd, s, 2))
2882 return FALSE;
2883 }
3dab13f6 2884
711de32c
RS
2885 if (htab->is_vxworks
2886 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2887 return FALSE;
9d8504b1 2888
25dbc73a
AM
2889 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2890 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2891 if (s == NULL)
2892 abort ();
3dab13f6 2893
3b36f7e6 2894 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
2895 if (htab->plt_type == PLT_VXWORKS)
2896 /* The VxWorks PLT is a loaded section with contents. */
2897 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
2898 return bfd_set_section_flags (abfd, s, flags);
2899}
3dab13f6 2900
25dbc73a 2901/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 2902
25dbc73a 2903static void
fcfa13d2 2904ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
2905 struct elf_link_hash_entry *dir,
2906 struct elf_link_hash_entry *ind)
2907{
2908 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 2909
25dbc73a
AM
2910 edir = (struct ppc_elf_link_hash_entry *) dir;
2911 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 2912
25dbc73a
AM
2913 if (eind->dyn_relocs != NULL)
2914 {
2915 if (edir->dyn_relocs != NULL)
3dab13f6 2916 {
25dbc73a
AM
2917 struct ppc_elf_dyn_relocs **pp;
2918 struct ppc_elf_dyn_relocs *p;
3dab13f6 2919
fcfa13d2 2920 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
2921 list. Merge any entries against the same section. */
2922 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 2923 {
25dbc73a
AM
2924 struct ppc_elf_dyn_relocs *q;
2925
2926 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2927 if (q->sec == p->sec)
2928 {
2929 q->pc_count += p->pc_count;
2930 q->count += p->count;
2931 *pp = p->next;
2932 break;
2933 }
2934 if (q == NULL)
2935 pp = &p->next;
3dab13f6 2936 }
25dbc73a 2937 *pp = edir->dyn_relocs;
3dab13f6 2938 }
25dbc73a
AM
2939
2940 edir->dyn_relocs = eind->dyn_relocs;
2941 eind->dyn_relocs = NULL;
3dab13f6 2942 }
3dab13f6 2943
25dbc73a 2944 edir->tls_mask |= eind->tls_mask;
4dc4a9a5 2945 edir->has_sda_refs |= eind->has_sda_refs;
3dab13f6 2946
a6aa5195
AM
2947 /* If called to transfer flags for a weakdef during processing
2948 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2949 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2950 if (!(ELIMINATE_COPY_RELOCS
2951 && eind->elf.root.type != bfd_link_hash_indirect
2952 && edir->elf.dynamic_adjusted))
2953 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2954
2955 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2956 edir->elf.ref_regular |= eind->elf.ref_regular;
2957 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2958 edir->elf.needs_plt |= eind->elf.needs_plt;
0eb4a168 2959 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
a6aa5195
AM
2960
2961 /* If we were called to copy over info for a weak sym, that's all. */
2962 if (eind->elf.root.type != bfd_link_hash_indirect)
2963 return;
2964
2965 /* Copy over the GOT refcount entries that we may have already seen to
2966 the symbol which just became indirect. */
fcfa13d2
AM
2967 edir->elf.got.refcount += eind->elf.got.refcount;
2968 eind->elf.got.refcount = 0;
a6aa5195
AM
2969
2970 /* And plt entries. */
2971 if (eind->elf.plt.plist != NULL)
2972 {
2973 if (edir->elf.plt.plist != NULL)
2974 {
2975 struct plt_entry **entp;
2976 struct plt_entry *ent;
2977
2978 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2979 {
2980 struct plt_entry *dent;
2981
2982 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2983 if (dent->sec == ent->sec && dent->addend == ent->addend)
2984 {
2985 dent->plt.refcount += ent->plt.refcount;
2986 *entp = ent->next;
2987 break;
2988 }
2989 if (dent == NULL)
2990 entp = &ent->next;
2991 }
2992 *entp = edir->elf.plt.plist;
2993 }
2994
2995 edir->elf.plt.plist = eind->elf.plt.plist;
2996 eind->elf.plt.plist = NULL;
2997 }
2998
fcfa13d2 2999 if (eind->elf.dynindx != -1)
25dbc73a 3000 {
fcfa13d2
AM
3001 if (edir->elf.dynindx != -1)
3002 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3003 edir->elf.dynstr_index);
a6aa5195
AM
3004 edir->elf.dynindx = eind->elf.dynindx;
3005 edir->elf.dynstr_index = eind->elf.dynstr_index;
3006 eind->elf.dynindx = -1;
3007 eind->elf.dynstr_index = 0;
25dbc73a 3008 }
25dbc73a 3009}
3dab13f6 3010
25dbc73a
AM
3011/* Hook called by the linker routine which adds symbols from an object
3012 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3013
25dbc73a
AM
3014static bfd_boolean
3015ppc_elf_add_symbol_hook (bfd *abfd,
3016 struct bfd_link_info *info,
3017 Elf_Internal_Sym *sym,
3018 const char **namep ATTRIBUTE_UNUSED,
3019 flagword *flagsp ATTRIBUTE_UNUSED,
3020 asection **secp,
3021 bfd_vma *valp)
3022{
3023 if (sym->st_shndx == SHN_COMMON
3024 && !info->relocatable
0c8d6e5c
AM
3025 && is_ppc_elf (info->output_bfd)
3026 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
3027 {
3028 /* Common symbols less than or equal to -G nn bytes are automatically
3029 put into .sbss. */
3030 struct ppc_elf_link_hash_table *htab;
3dab13f6 3031
25dbc73a
AM
3032 htab = ppc_elf_hash_table (info);
3033 if (htab->sbss == NULL)
3034 {
644285ef 3035 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3036
644285ef
AM
3037 if (!htab->elf.dynobj)
3038 htab->elf.dynobj = abfd;
3039
3496cb2a
L
3040 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3041 ".sbss",
3042 flags);
3043 if (htab->sbss == NULL)
25dbc73a 3044 return FALSE;
3dab13f6 3045 }
3dab13f6 3046
25dbc73a
AM
3047 *secp = htab->sbss;
3048 *valp = sym->st_size;
3049 }
3dab13f6 3050
25dbc73a 3051 return TRUE;
3dab13f6
AM
3052}
3053\f
046183de
AM
3054static bfd_boolean
3055create_sdata_sym (struct ppc_elf_link_hash_table *htab,
3056 elf_linker_section_t *lsect)
3057{
3058 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3059 TRUE, FALSE, TRUE);
3060 if (lsect->sym == NULL)
3061 return FALSE;
3062 if (lsect->sym->root.type == bfd_link_hash_new)
3063 lsect->sym->non_elf = 0;
3064 lsect->sym->ref_regular = 1;
3065 return TRUE;
3066}
3067
c9a2f333 3068/* Create a special linker section. */
25dbc73a 3069
c9a2f333 3070static bfd_boolean
55fd94b0
AM
3071ppc_elf_create_linker_section (bfd *abfd,
3072 struct bfd_link_info *info,
c9a2f333
AM
3073 flagword flags,
3074 elf_linker_section_t *lsect)
252b5132 3075{
58111eb7 3076 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 3077 asection *s;
58111eb7 3078
c9a2f333
AM
3079 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3080 | SEC_LINKER_CREATED);
58111eb7
AM
3081
3082 /* Record the first bfd that needs the special sections. */
3083 if (!htab->elf.dynobj)
3084 htab->elf.dynobj = abfd;
3085
3496cb2a
L
3086 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3087 lsect->name,
3088 flags);
76750a2f 3089 if (s == NULL
76750a2f 3090 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 3091 return FALSE;
76750a2f 3092 lsect->section = s;
58111eb7 3093
046183de 3094 return create_sdata_sym (htab, lsect);
252b5132 3095}
252b5132 3096
25dbc73a
AM
3097/* Find a linker generated pointer with a given addend and type. */
3098
3099static elf_linker_section_pointers_t *
3100elf_find_pointer_linker_section
3101 (elf_linker_section_pointers_t *linker_pointers,
3102 bfd_vma addend,
3103 elf_linker_section_t *lsect)
252b5132 3104{
25dbc73a
AM
3105 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3106 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3107 return linker_pointers;
252b5132 3108
25dbc73a
AM
3109 return NULL;
3110}
3111
3112/* Allocate a pointer to live in a linker created section. */
3113
3114static bfd_boolean
3115elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM
3116 elf_linker_section_t *lsect,
3117 struct elf_link_hash_entry *h,
3118 const Elf_Internal_Rela *rel)
3119{
3120 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3121 elf_linker_section_pointers_t *linker_section_ptr;
3122 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3123 bfd_size_type amt;
3124
3125 BFD_ASSERT (lsect != NULL);
3126
3127 /* Is this a global symbol? */
3128 if (h != NULL)
3129 {
3130 struct ppc_elf_link_hash_entry *eh;
3131
3132 /* Has this symbol already been allocated? If so, our work is done. */
3133 eh = (struct ppc_elf_link_hash_entry *) h;
3134 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3135 rel->r_addend,
3136 lsect))
3137 return TRUE;
3138
3139 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3140 }
3141 else
3142 {
0c8d6e5c 3143 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3144
25dbc73a
AM
3145 /* Allocation of a pointer to a local symbol. */
3146 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3147
3148 /* Allocate a table to hold the local symbols if first time. */
3149 if (!ptr)
3150 {
0ffa91dd 3151 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3152
3153 amt = num_symbols;
3154 amt *= sizeof (elf_linker_section_pointers_t *);
3155 ptr = bfd_zalloc (abfd, amt);
3156
3157 if (!ptr)
3158 return FALSE;
3159
3160 elf_local_ptr_offsets (abfd) = ptr;
3161 }
3162
3163 /* Has this symbol already been allocated? If so, our work is done. */
3164 if (elf_find_pointer_linker_section (ptr[r_symndx],
3165 rel->r_addend,
3166 lsect))
3167 return TRUE;
252b5132 3168
25dbc73a 3169 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3170 }
41fcb14e 3171
25dbc73a
AM
3172 /* Allocate space for a pointer in the linker section, and allocate
3173 a new pointer record from internal memory. */
3174 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3175 amt = sizeof (elf_linker_section_pointers_t);
3176 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3177
25dbc73a 3178 if (!linker_section_ptr)
7619e7c7 3179 return FALSE;
41fcb14e 3180
25dbc73a
AM
3181 linker_section_ptr->next = *ptr_linker_section_ptr;
3182 linker_section_ptr->addend = rel->r_addend;
3183 linker_section_ptr->lsect = lsect;
25dbc73a 3184 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3185
25dbc73a
AM
3186 linker_section_ptr->offset = lsect->section->size;
3187 lsect->section->size += 4;
7619e7c7 3188
25dbc73a
AM
3189#ifdef DEBUG
3190 fprintf (stderr,
3191 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3192 lsect->name, (long) linker_section_ptr->offset,
3193 (long) lsect->section->size);
3194#endif
7619e7c7
AM
3195
3196 return TRUE;
41fcb14e
AM
3197}
3198
b34976b6 3199static bfd_boolean
25dbc73a
AM
3200update_local_sym_info (bfd *abfd,
3201 Elf_Internal_Shdr *symtab_hdr,
3202 unsigned long r_symndx,
3203 int tls_type)
252b5132 3204{
25dbc73a
AM
3205 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3206 char *local_got_tls_masks;
252b5132 3207
25dbc73a 3208 if (local_got_refcounts == NULL)
252b5132 3209 {
25dbc73a
AM
3210 bfd_size_type size = symtab_hdr->sh_info;
3211
3212 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
3213 local_got_refcounts = bfd_zalloc (abfd, size);
3214 if (local_got_refcounts == NULL)
b34976b6 3215 return FALSE;
25dbc73a 3216 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3217 }
41fcb14e 3218
25dbc73a
AM
3219 local_got_refcounts[r_symndx] += 1;
3220 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
3221 local_got_tls_masks[r_symndx] |= tls_type;
3222 return TRUE;
3223}
41fcb14e 3224
a6aa5195
AM
3225static bfd_boolean
3226update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
3227 asection *sec, bfd_vma addend)
3228{
3229 struct plt_entry *ent;
3230
3231 if (addend < 32768)
3232 sec = NULL;
3233 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3234 if (ent->sec == sec && ent->addend == addend)
3235 break;
3236 if (ent == NULL)
3237 {
3238 bfd_size_type amt = sizeof (*ent);
3239 ent = bfd_alloc (abfd, amt);
3240 if (ent == NULL)
3241 return FALSE;
3242 ent->next = h->plt.plist;
3243 ent->sec = sec;
3244 ent->addend = addend;
3245 ent->plt.refcount = 0;
3246 h->plt.plist = ent;
3247 }
3248 ent->plt.refcount += 1;
3249 return TRUE;
3250}
3251
3252static struct plt_entry *
3253find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
3254{
3255 struct plt_entry *ent;
3256
3257 if (addend < 32768)
3258 sec = NULL;
3259 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3260 if (ent->sec == sec && ent->addend == addend)
3261 break;
3262 return ent;
3263}
3264
25dbc73a
AM
3265static void
3266bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3267{
3268 (*_bfd_error_handler)
3269 (_("%B: relocation %s cannot be used when making a shared object"),
3270 abfd,
3271 ppc_elf_howto_table[r_type]->name);
3272 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3273}
3274
25dbc73a
AM
3275/* Look through the relocs for a section during the first phase, and
3276 allocate space in the global offset table or procedure linkage
3277 table. */
252b5132 3278
b34976b6 3279static bfd_boolean
25dbc73a
AM
3280ppc_elf_check_relocs (bfd *abfd,
3281 struct bfd_link_info *info,
3282 asection *sec,
3283 const Elf_Internal_Rela *relocs)
252b5132 3284{
7619e7c7 3285 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3286 Elf_Internal_Shdr *symtab_hdr;
3287 struct elf_link_hash_entry **sym_hashes;
3288 const Elf_Internal_Rela *rel;
3289 const Elf_Internal_Rela *rel_end;
a6aa5195 3290 asection *got2, *sreloc;
25dbc73a
AM
3291
3292 if (info->relocatable)
3293 return TRUE;
252b5132 3294
c87b5a93
AM
3295 /* Don't do anything special with non-loaded, non-alloced sections.
3296 In particular, any relocs in such sections should not affect GOT
3297 and PLT reference counting (ie. we don't allow them to create GOT
3298 or PLT entries), there's no possibility or desire to optimize TLS
3299 relocs, and there's not much point in propagating relocs to shared
3300 libs that the dynamic linker won't relocate. */
3301 if ((sec->flags & SEC_ALLOC) == 0)
3302 return TRUE;
3303
252b5132 3304#ifdef DEBUG
25dbc73a
AM
3305 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3306 sec, abfd);
252b5132
RH
3307#endif
3308
0c8d6e5c 3309 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3310
25dbc73a
AM
3311 /* Initialize howto table if not already done. */
3312 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3313 ppc_elf_howto_init ();
3314
7619e7c7 3315 htab = ppc_elf_hash_table (info);
0ffa91dd 3316 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 3317 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3318 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
3319 sreloc = NULL;
3320
3321 rel_end = relocs + sec->reloc_count;
3322 for (rel = relocs; rel < rel_end; rel++)
3323 {
3324 unsigned long r_symndx;
3325 enum elf_ppc_reloc_type r_type;
3326 struct elf_link_hash_entry *h;
3327 int tls_type = 0;
3328
3329 r_symndx = ELF32_R_SYM (rel->r_info);
3330 if (r_symndx < symtab_hdr->sh_info)
3331 h = NULL;
3332 else
973a3492
L
3333 {
3334 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3335 while (h->root.type == bfd_link_hash_indirect
3336 || h->root.type == bfd_link_hash_warning)
3337 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3338 }
25dbc73a
AM
3339
3340 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3341 This shows up in particular in an R_PPC_ADDR32 in the eabi
3342 startup code. */
3b36f7e6
AM
3343 if (h != NULL
3344 && htab->got == NULL
3345 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3346 {
3b36f7e6
AM
3347 if (htab->elf.dynobj == NULL)
3348 htab->elf.dynobj = abfd;
3349 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3350 return FALSE;
3351 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3352 }
252b5132 3353
25dbc73a
AM
3354 r_type = ELF32_R_TYPE (rel->r_info);
3355 switch (r_type)
3356 {
3357 case R_PPC_GOT_TLSLD16:
3358 case R_PPC_GOT_TLSLD16_LO:
3359 case R_PPC_GOT_TLSLD16_HI:
3360 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
3361 tls_type = TLS_TLS | TLS_LD;
3362 goto dogottls;
252b5132 3363
25dbc73a
AM
3364 case R_PPC_GOT_TLSGD16:
3365 case R_PPC_GOT_TLSGD16_LO:
3366 case R_PPC_GOT_TLSGD16_HI:
3367 case R_PPC_GOT_TLSGD16_HA:
3368 tls_type = TLS_TLS | TLS_GD;
3369 goto dogottls;
3370
3371 case R_PPC_GOT_TPREL16:
3372 case R_PPC_GOT_TPREL16_LO:
3373 case R_PPC_GOT_TPREL16_HI:
3374 case R_PPC_GOT_TPREL16_HA:
1d483afe 3375 if (!info->executable)
25dbc73a
AM
3376 info->flags |= DF_STATIC_TLS;
3377 tls_type = TLS_TLS | TLS_TPREL;
3378 goto dogottls;
3379
3380 case R_PPC_GOT_DTPREL16:
3381 case R_PPC_GOT_DTPREL16_LO:
3382 case R_PPC_GOT_DTPREL16_HI:
3383 case R_PPC_GOT_DTPREL16_HA:
3384 tls_type = TLS_TLS | TLS_DTPREL;
3385 dogottls:
3386 sec->has_tls_reloc = 1;
3387 /* Fall thru */
252b5132 3388
25dbc73a
AM
3389 /* GOT16 relocations */
3390 case R_PPC_GOT16:
3391 case R_PPC_GOT16_LO:
3392 case R_PPC_GOT16_HI:
3393 case R_PPC_GOT16_HA:
3394 /* This symbol requires a global offset table entry. */
3395 if (htab->got == NULL)
3396 {
3397 if (htab->elf.dynobj == NULL)
3398 htab->elf.dynobj = abfd;
3399 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3400 return FALSE;
3401 }
3402 if (h != NULL)
3403 {
3404 h->got.refcount += 1;
3405 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3406 }
3407 else
3408 /* This is a global offset table entry for a local symbol. */
3409 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3410 return FALSE;
3411 break;
252b5132 3412
25dbc73a
AM
3413 /* Indirect .sdata relocation. */
3414 case R_PPC_EMB_SDAI16:
3415 if (info->shared)
3416 {
3417 bad_shared_reloc (abfd, r_type);
3418 return FALSE;
3419 }
c9a2f333
AM
3420 if (htab->sdata[0].section == NULL
3421 && !ppc_elf_create_linker_section (abfd, info, 0,
3422 &htab->sdata[0]))
3423 return FALSE;
76750a2f
AM
3424 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3425 h, rel))
25dbc73a 3426 return FALSE;
046183de
AM
3427 if (h != NULL)
3428 {
3429 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3430 h->non_got_ref = TRUE;
3431 }
25dbc73a 3432 break;
252b5132 3433
25dbc73a
AM
3434 /* Indirect .sdata2 relocation. */
3435 case R_PPC_EMB_SDA2I16:
3436 if (info->shared)
3437 {
3438 bad_shared_reloc (abfd, r_type);
3439 return FALSE;
3440 }
c9a2f333
AM
3441 if (htab->sdata[1].section == NULL
3442 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3443 &htab->sdata[1]))
3444 return FALSE;
76750a2f
AM
3445 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3446 h, rel))
25dbc73a 3447 return FALSE;
046183de
AM
3448 if (h != NULL)
3449 {
3450 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3451 h->non_got_ref = TRUE;
3452 }
25dbc73a 3453 break;
252b5132 3454
25dbc73a 3455 case R_PPC_SDAREL16:
046183de
AM
3456 if (info->shared)
3457 {
3458 bad_shared_reloc (abfd, r_type);
3459 return FALSE;
3460 }
3461 if (htab->sdata[0].sym == NULL
3462 && !create_sdata_sym (htab, &htab->sdata[0]))
3463 return FALSE;
3464 if (h != NULL)
3465 {
3466 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3467 h->non_got_ref = TRUE;
3468 }
3469 break;
3470
25dbc73a 3471 case R_PPC_EMB_SDA2REL:
046183de
AM
3472 if (info->shared)
3473 {
3474 bad_shared_reloc (abfd, r_type);
3475 return FALSE;
3476 }
3477 if (htab->sdata[1].sym == NULL
3478 && !create_sdata_sym (htab, &htab->sdata[1]))
3479 return FALSE;
3480 if (h != NULL)
3481 {
3482 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3483 h->non_got_ref = TRUE;
3484 }
3485 break;
3486
25dbc73a
AM
3487 case R_PPC_EMB_SDA21:
3488 case R_PPC_EMB_RELSDA:
046183de
AM
3489 if (info->shared)
3490 {
3491 bad_shared_reloc (abfd, r_type);
3492 return FALSE;
3493 }
3494 if (htab->sdata[0].sym == NULL
3495 && !create_sdata_sym (htab, &htab->sdata[0]))
3496 return FALSE;
3497 if (htab->sdata[1].sym == NULL
3498 && !create_sdata_sym (htab, &htab->sdata[1]))
3499 return FALSE;
3500 if (h != NULL)
3501 {
3502 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3503 h->non_got_ref = TRUE;
3504 }
3505 break;
3506
25dbc73a
AM
3507 case R_PPC_EMB_NADDR32:
3508 case R_PPC_EMB_NADDR16:
3509 case R_PPC_EMB_NADDR16_LO:
3510 case R_PPC_EMB_NADDR16_HI:
3511 case R_PPC_EMB_NADDR16_HA:
3512 if (info->shared)
3513 {
3514 bad_shared_reloc (abfd, r_type);
3515 return FALSE;
3516 }
4dc4a9a5 3517 if (h != NULL)
046183de 3518 h->non_got_ref = TRUE;
25dbc73a 3519 break;
252b5132 3520
25dbc73a
AM
3521 case R_PPC_PLT32:
3522 case R_PPC_PLTREL24:
3523 case R_PPC_PLTREL32:
3524 case R_PPC_PLT16_LO:
3525 case R_PPC_PLT16_HI:
3526 case R_PPC_PLT16_HA:
3527#ifdef DEBUG
3528 fprintf (stderr, "Reloc requires a PLT entry\n");
3529#endif
3530 /* This symbol requires a procedure linkage table entry. We
3531 actually build the entry in finish_dynamic_symbol,
3532 because this might be a case of linking PIC code without
3533 linking in any dynamic objects, in which case we don't
3534 need to generate a procedure linkage table after all. */
7619e7c7 3535
25dbc73a
AM
3536 if (h == NULL)
3537 {
3538 /* It does not make sense to have a procedure linkage
3539 table entry for a local symbol. */
3540 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3541 "local symbol"),
3542 abfd,
3543 sec,
3544 (long) rel->r_offset,
3545 ppc_elf_howto_table[r_type]->name);
3546 bfd_set_error (bfd_error_bad_value);
3547 return FALSE;
3548 }
a6aa5195
AM
3549 else
3550 {
016687f8 3551 bfd_vma addend = 0;
ee05f2fe 3552
016687f8
AM
3553 if (r_type == R_PPC_PLTREL24)
3554 {
3555 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3556 addend = rel->r_addend;
3557 }
a6aa5195
AM
3558 h->needs_plt = 1;
3559 if (!update_plt_info (abfd, h, got2, addend))
3560 return FALSE;
3561 }
25dbc73a 3562 break;
ee05f2fe 3563
25dbc73a
AM
3564 /* The following relocations don't need to propagate the
3565 relocation if linking a shared object since they are
3566 section relative. */
3567 case R_PPC_SECTOFF:
3568 case R_PPC_SECTOFF_LO:
3569 case R_PPC_SECTOFF_HI:
3570 case R_PPC_SECTOFF_HA:
3571 case R_PPC_DTPREL16:
3572 case R_PPC_DTPREL16_LO:
3573 case R_PPC_DTPREL16_HI:
3574 case R_PPC_DTPREL16_HA:
3575 case R_PPC_TOC16:
3576 break;
252b5132 3577
d7128ce4
AM
3578 case R_PPC_REL16:
3579 case R_PPC_REL16_LO:
3580 case R_PPC_REL16_HI:
3581 case R_PPC_REL16_HA:
016687f8 3582 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
3583 break;
3584
a6aa5195 3585 /* These are just markers. */
25dbc73a
AM
3586 case R_PPC_TLS:
3587 case R_PPC_EMB_MRKREF:
3588 case R_PPC_NONE:
3589 case R_PPC_max:
3590 break;
252b5132 3591
25dbc73a
AM
3592 /* These should only appear in dynamic objects. */
3593 case R_PPC_COPY:
3594 case R_PPC_GLOB_DAT:
3595 case R_PPC_JMP_SLOT:
3596 case R_PPC_RELATIVE:
3597 break;
252b5132 3598
25dbc73a
AM
3599 /* These aren't handled yet. We'll report an error later. */
3600 case R_PPC_ADDR30:
3601 case R_PPC_EMB_RELSEC16:
3602 case R_PPC_EMB_RELST_LO:
3603 case R_PPC_EMB_RELST_HI:
3604 case R_PPC_EMB_RELST_HA:
3605 case R_PPC_EMB_BIT_FLD:
3606 break;
252b5132 3607
25dbc73a
AM
3608 /* This refers only to functions defined in the shared library. */
3609 case R_PPC_LOCAL24PC:
4a3dc543 3610 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
3611 {
3612 htab->plt_type = PLT_OLD;
3613 htab->old_bfd = abfd;
3614 }
25dbc73a 3615 break;
252b5132 3616
25dbc73a
AM
3617 /* This relocation describes the C++ object vtable hierarchy.
3618 Reconstruct it for later use during GC. */
3619 case R_PPC_GNU_VTINHERIT:
3620 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3621 return FALSE;
3622 break;
252b5132 3623
25dbc73a
AM
3624 /* This relocation describes which C++ vtable entries are actually
3625 used. Record for later use during GC. */
3626 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
3627 BFD_ASSERT (h != NULL);
3628 if (h != NULL
3629 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
3630 return FALSE;
3631 break;
252b5132 3632
25dbc73a
AM
3633 /* We shouldn't really be seeing these. */
3634 case R_PPC_TPREL32:
1d483afe
AM
3635 case R_PPC_TPREL16:
3636 case R_PPC_TPREL16_LO:
3637 case R_PPC_TPREL16_HI:
3638 case R_PPC_TPREL16_HA:
3639 if (!info->executable)
25dbc73a
AM
3640 info->flags |= DF_STATIC_TLS;
3641 goto dodyn;
252b5132 3642
25dbc73a
AM
3643 /* Nor these. */
3644 case R_PPC_DTPMOD32:
3645 case R_PPC_DTPREL32:
3646 goto dodyn;
252b5132 3647
9edfd1af
AM
3648 case R_PPC_REL32:
3649 if (h == NULL
3650 && got2 != NULL
3651 && (sec->flags & SEC_CODE) != 0
3652 && (info->shared || info->pie)
4a3dc543 3653 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
3654 {
3655 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3656 the start of a function, which assembles to a REL32
3657 reference to .got2. If we detect one of these, then
3658 force the old PLT layout because the linker cannot
3659 reliably deduce the GOT pointer value needed for
3660 PLT call stubs. */
3661 asection *s;
3662
3663 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3664 r_symndx);
3665 if (s == got2)
016687f8
AM
3666 {
3667 htab->plt_type = PLT_OLD;
3668 htab->old_bfd = abfd;
3669 }
9edfd1af 3670 }
7123df0e 3671 if (h == NULL || h == htab->elf.hgot)
fd38b44c 3672 break;
625af618
AM
3673 /* fall through */
3674
3675 case R_PPC_ADDR32:
3676 case R_PPC_ADDR16:
3677 case R_PPC_ADDR16_LO:
3678 case R_PPC_ADDR16_HI:
3679 case R_PPC_ADDR16_HA:
3680 case R_PPC_UADDR32:
3681 case R_PPC_UADDR16:
3682 if (h != NULL && !info->shared)
3683 {
3684 /* We may need a plt entry if the symbol turns out to be
3685 a function defined in a dynamic object. */
3686 if (!update_plt_info (abfd, h, NULL, 0))
3687 return FALSE;
3688
3689 /* We may need a copy reloc too. */
3690 h->non_got_ref = 1;
3691 h->pointer_equality_needed = 1;
3692 }
3693 goto dodyn;
9edfd1af 3694
25dbc73a
AM
3695 case R_PPC_REL24:
3696 case R_PPC_REL14:
3697 case R_PPC_REL14_BRTAKEN:
3698 case R_PPC_REL14_BRNTAKEN:
d7128ce4 3699 if (h == NULL)
25dbc73a 3700 break;
7123df0e 3701 if (h == htab->elf.hgot)
d7128ce4 3702 {
7123df0e 3703 if (htab->plt_type == PLT_UNSET)
016687f8
AM
3704 {
3705 htab->plt_type = PLT_OLD;
3706 htab->old_bfd = abfd;
3707 }
d7128ce4
AM
3708 break;
3709 }
25dbc73a 3710 /* fall through */
ee05f2fe 3711
25dbc73a 3712 case R_PPC_ADDR24:
25dbc73a
AM
3713 case R_PPC_ADDR14:
3714 case R_PPC_ADDR14_BRTAKEN:
3715 case R_PPC_ADDR14_BRNTAKEN:
25dbc73a
AM
3716 if (h != NULL && !info->shared)
3717 {
3718 /* We may need a plt entry if the symbol turns out to be
3719 a function defined in a dynamic object. */
a6aa5195
AM
3720 if (!update_plt_info (abfd, h, NULL, 0))
3721 return FALSE;
625af618 3722 break;
25dbc73a 3723 }
7619e7c7 3724
25dbc73a
AM
3725 dodyn:
3726 /* If we are creating a shared library, and this is a reloc
3727 against a global symbol, or a non PC relative reloc
3728 against a local symbol, then we need to copy the reloc
3729 into the shared library. However, if we are linking with
3730 -Bsymbolic, we do not need to copy a reloc against a
3731 global symbol which is defined in an object we are
3732 including in the link (i.e., DEF_REGULAR is set). At
3733 this point we have not seen all the input files, so it is
3734 possible that DEF_REGULAR is not set now but will be set
3735 later (it is never cleared). In case of a weak definition,
3736 DEF_REGULAR may be cleared later by a strong definition in
3737 a shared library. We account for that possibility below by
3738 storing information in the dyn_relocs field of the hash
3739 table entry. A similar situation occurs when creating
3740 shared libraries and symbol visibility changes render the
3741 symbol local.
7619e7c7 3742
25dbc73a
AM
3743 If on the other hand, we are creating an executable, we
3744 may need to keep relocations for symbols satisfied by a
3745 dynamic library if we manage to avoid copy relocs for the
3746 symbol. */
3747 if ((info->shared
1d483afe 3748 && (must_be_dyn_reloc (info, r_type)
25dbc73a
AM
3749 || (h != NULL
3750 && (! info->symbolic
3751 || h->root.type == bfd_link_hash_defweak
3752 || !h->def_regular))))
3753 || (ELIMINATE_COPY_RELOCS
3754 && !info->shared
25dbc73a
AM
3755 && h != NULL
3756 && (h->root.type == bfd_link_hash_defweak
3757 || !h->def_regular)))
3758 {
3759 struct ppc_elf_dyn_relocs *p;
3760 struct ppc_elf_dyn_relocs **head;
7619e7c7 3761
25dbc73a
AM
3762#ifdef DEBUG
3763 fprintf (stderr,
3764 "ppc_elf_check_relocs needs to "
3765 "create relocation for %s\n",
3766 (h && h->root.root.string
3767 ? h->root.root.string : "<unknown>"));
3768#endif
3769 if (sreloc == NULL)
3770 {
3771 const char *name;
7619e7c7 3772
25dbc73a
AM
3773 name = (bfd_elf_string_from_elf_section
3774 (abfd,
3775 elf_elfheader (abfd)->e_shstrndx,
3776 elf_section_data (sec)->rel_hdr.sh_name));
3777 if (name == NULL)
3778 return FALSE;
7619e7c7 3779
0112cd26 3780 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
25dbc73a
AM
3781 && strcmp (bfd_get_section_name (abfd, sec),
3782 name + 5) == 0);
7619e7c7 3783
c9a2f333
AM
3784 if (htab->elf.dynobj == NULL)
3785 htab->elf.dynobj = abfd;
25dbc73a
AM
3786 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3787 if (sreloc == NULL)
3788 {
3789 flagword flags;
7619e7c7 3790
25dbc73a 3791 flags = (SEC_HAS_CONTENTS | SEC_READONLY
c87b5a93
AM
3792 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3793 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L
3794 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3795 name,
3796 flags);
25dbc73a 3797 if (sreloc == NULL
25dbc73a
AM
3798 || ! bfd_set_section_alignment (htab->elf.dynobj,
3799 sreloc, 2))
3800 return FALSE;
3801 }
3802 elf_section_data (sec)->sreloc = sreloc;
3803 }
7619e7c7 3804
25dbc73a
AM
3805 /* If this is a global symbol, we count the number of
3806 relocations we need for this symbol. */
3807 if (h != NULL)
3808 {
3809 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3810 }
3811 else
3812 {
3813 /* Track dynamic relocs needed for local syms too.
3814 We really need local syms available to do this
3815 easily. Oh well. */
7619e7c7 3816
25dbc73a 3817 asection *s;
6edfbbad
DJ
3818 void *vpp;
3819
25dbc73a
AM
3820 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3821 sec, r_symndx);
3822 if (s == NULL)
3823 return FALSE;
7fce784e 3824
6edfbbad
DJ
3825 vpp = &elf_section_data (s)->local_dynrel;
3826 head = (struct ppc_elf_dyn_relocs **) vpp;
25dbc73a 3827 }
7fce784e 3828
25dbc73a
AM
3829 p = *head;
3830 if (p == NULL || p->sec != sec)
3831 {
3832 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3833 if (p == NULL)
3834 return FALSE;
3835 p->next = *head;
3836 *head = p;
3837 p->sec = sec;
3838 p->count = 0;
3839 p->pc_count = 0;
3840 }
3841
3842 p->count += 1;
1d483afe 3843 if (!must_be_dyn_reloc (info, r_type))
25dbc73a 3844 p->pc_count += 1;
7619e7c7 3845 }
25dbc73a
AM
3846
3847 break;
7619e7c7
AM
3848 }
3849 }
ee05f2fe 3850
25dbc73a
AM
3851 return TRUE;
3852}
3853\f
34c8bcba
JM
3854
3855/* Merge object attributes from IBFD into OBFD. Raise an error if
3856 there are conflicting attributes. */
3857static bfd_boolean
3858ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
3859{
c6e65352
DJ
3860 obj_attribute *in_attr, *in_attrs;
3861 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM
3862
3863 if (!elf_known_obj_attributes_proc (obfd)[0].i)
3864 {
3865 /* This is the first object. Copy the attributes. */
3866 _bfd_elf_copy_obj_attributes (ibfd, obfd);
3867
3868 /* Use the Tag_null value to indicate the attributes have been
3869 initialized. */
3870 elf_known_obj_attributes_proc (obfd)[0].i = 1;
3871
3872 return TRUE;
3873 }
3874
c6e65352
DJ
3875 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3876 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3877
34c8bcba
JM
3878 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3879 non-conflicting ones. */
c6e65352
DJ
3880 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
3881 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
3882 if (in_attr->i != out_attr->i)
34c8bcba 3883 {
c6e65352
DJ
3884 out_attr->type = 1;
3885 if (out_attr->i == 0)
3886 out_attr->i = in_attr->i;
3887 else if (in_attr->i == 0)
34c8bcba 3888 ;
c6e65352 3889 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM
3890 _bfd_error_handler
3891 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3c7b9897
AM
3892 else if (out_attr->i == 1 && in_attr->i == 3)
3893 _bfd_error_handler
3894 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3895 obfd, ibfd);
3896 else if (out_attr->i == 3 && in_attr->i == 1)
3897 _bfd_error_handler
3898 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3899 ibfd, obfd);
3900 else if (out_attr->i == 3 && in_attr->i == 2)
3901 _bfd_error_handler
3902 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3903 ibfd, obfd);
3904 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
34c8bcba
JM
3905 _bfd_error_handler
3906 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3c7b9897 3907 else if (in_attr->i > 3)
34c8bcba
JM
3908 _bfd_error_handler
3909 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 3910 in_attr->i);
34c8bcba
JM
3911 else
3912 _bfd_error_handler
3913 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ
3914 out_attr->i);
3915 }
3916
3917 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3918 merge non-conflicting ones. */
3919 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
3920 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
3921 if (in_attr->i != out_attr->i)
3922 {
3923 const char *in_abi = NULL, *out_abi = NULL;
3924
3925 switch (in_attr->i)
3926 {
3927 case 1: in_abi = "generic"; break;
3928 case 2: in_abi = "AltiVec"; break;
3929 case 3: in_abi = "SPE"; break;
3930 }
3931
3932 switch (out_attr->i)
3933 {
3934 case 1: out_abi = "generic"; break;
3935 case 2: out_abi = "AltiVec"; break;
3936 case 3: out_abi = "SPE"; break;
3937 }
3938
3939 out_attr->type = 1;
3940 if (out_attr->i == 0)
3941 out_attr->i = in_attr->i;
3942 else if (in_attr->i == 0)
3943 ;
3944 /* For now, allow generic to transition to AltiVec or SPE
3945 without a warning. If GCC marked files with their stack
3946 alignment and used don't-care markings for files which are
3947 not affected by the vector ABI, we could warn about this
3948 case too. */
3949 else if (out_attr->i == 1)
3950 out_attr->i = in_attr->i;
3951 else if (in_attr->i == 1)
3952 ;
3953 else if (in_abi == NULL)
3954 _bfd_error_handler
3955 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
3956 in_attr->i);
3957 else if (out_abi == NULL)
3958 _bfd_error_handler
3959 (_("Warning: %B uses unknown vector ABI %d"), obfd,
3960 in_attr->i);
3961 else
3962 _bfd_error_handler
3963 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
3964 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM
3965 }
3966
f82e0623
NF
3967 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
3968 and merge non-conflicting ones. */
3969 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
3970 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
3971 if (in_attr->i != out_attr->i)
3972 {
3973 out_attr->type = 1;
3974 if (out_attr->i == 0)
3975 out_attr->i = in_attr->i;
3976 else if (in_attr->i == 0)
3977 ;
3978 else if (out_attr->i == 1 && in_attr->i == 2)
3979 _bfd_error_handler
3980 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
3981 else if (out_attr->i == 2 && in_attr->i == 1)
3982 _bfd_error_handler
3983 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
3984 else if (in_attr->i > 2)
3985 _bfd_error_handler
3986 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
3987 in_attr->i);
3988 else
3989 _bfd_error_handler
3990 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
3991 out_attr->i);
3992 }
3993
34c8bcba
JM
3994 /* Merge Tag_compatibility attributes and any common GNU ones. */
3995 _bfd_elf_merge_object_attributes (ibfd, obfd);
3996
3997 return TRUE;
3998}
3999
8853c3d3
AM
4000/* Merge backend specific data from an object file to the output
4001 object file when linking. */
4002
4003static bfd_boolean
4004ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4005{
4006 flagword old_flags;
4007 flagword new_flags;
4008 bfd_boolean error;
4009
0c8d6e5c 4010 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4011 return TRUE;
4012
4013 /* Check if we have the same endianess. */
4014 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4015 return FALSE;
4016
34c8bcba
JM
4017 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4018 return FALSE;
4019
8853c3d3
AM
4020 new_flags = elf_elfheader (ibfd)->e_flags;
4021 old_flags = elf_elfheader (obfd)->e_flags;
4022 if (!elf_flags_init (obfd))
4023 {
4024 /* First call, no flags set. */
4025 elf_flags_init (obfd) = TRUE;
4026 elf_elfheader (obfd)->e_flags = new_flags;
4027 }
4028
4029 /* Compatible flags are ok. */
4030 else if (new_flags == old_flags)
4031 ;
4032
4033 /* Incompatible flags. */
4034 else
4035 {
4036 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4037 to be linked with either. */
4038 error = FALSE;
4039 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4040 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4041 {
4042 error = TRUE;
4043 (*_bfd_error_handler)
4044 (_("%B: compiled with -mrelocatable and linked with "
4045 "modules compiled normally"), ibfd);
4046 }
4047 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4048 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4049 {
4050 error = TRUE;
4051 (*_bfd_error_handler)
4052 (_("%B: compiled normally and linked with "
4053 "modules compiled with -mrelocatable"), ibfd);
4054 }
4055
4056 /* The output is -mrelocatable-lib iff both the input files are. */
4057 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4058 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4059
4060 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4061 but each input file is either -mrelocatable or -mrelocatable-lib. */
4062 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4063 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4064 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4065 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4066
4067 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4068 any module uses it. */
4069 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4070
4071 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4072 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4073
4074 /* Warn about any other mismatches. */
4075 if (new_flags != old_flags)
4076 {
4077 error = TRUE;
4078 (*_bfd_error_handler)
4079 (_("%B: uses different e_flags (0x%lx) fields "
4080 "than previous modules (0x%lx)"),
4081 ibfd, (long) new_flags, (long) old_flags);
4082 }
4083
4084 if (error)
4085 {
4086 bfd_set_error (bfd_error_bad_value);
4087 return FALSE;
4088 }
4089 }
4090
4091 return TRUE;
4092}
4093\f
d7128ce4
AM
4094/* Choose which PLT scheme to use, and set .plt flags appropriately.
4095 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4096int
4097ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4098 struct bfd_link_info *info,
016687f8 4099 enum ppc_elf_plt_type plt_style,
0ba07910 4100 int emit_stub_syms)
d7128ce4
AM
4101{
4102 struct ppc_elf_link_hash_table *htab;
9d8504b1 4103 flagword flags;
d7128ce4
AM
4104
4105 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4106
4107 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4108 {
4109 if (plt_style == PLT_OLD)
4110 htab->plt_type = PLT_OLD;
4111 else
4112 {
4113 bfd *ibfd;
4114 enum ppc_elf_plt_type plt_type = plt_style;
4115
4116 /* Look through the reloc flags left by ppc_elf_check_relocs.
4117 Use the old style bss plt if a file makes plt calls
4118 without using the new relocs, and if ld isn't given
4119 --secure-plt and we never see REL16 relocs. */
4120 if (plt_type == PLT_UNSET)
4121 plt_type = PLT_OLD;
60b31e8d 4122 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
0c8d6e5c 4123 if (is_ppc_elf (ibfd))
016687f8
AM
4124 {
4125 if (ppc_elf_tdata (ibfd)->has_rel16)
4126 plt_type = PLT_NEW;
4127 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4128 {
4129 plt_type = PLT_OLD;
4130 htab->old_bfd = ibfd;
4131 break;
4132 }
4133 }
4134 htab->plt_type = plt_type;
4135 }
4136 }
4137 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4138 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
d7128ce4 4139
0ba07910
AM
4140 htab->emit_stub_syms = emit_stub_syms;
4141
4a3dc543 4142 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4143
4a3dc543 4144 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
4145 {
4146 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4147 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
4148
4149 /* The new PLT is a loaded section. */
4150 if (htab->plt != NULL
4151 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4152 return -1;
4153
4154 /* The new GOT is not executable. */
4155 if (htab->got != NULL
4156 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4157 return -1;
d7128ce4
AM
4158 }
4159 else
4160 {
4161 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
4162 if (htab->glink != NULL
4163 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4164 return -1;
d7128ce4 4165 }
4a3dc543 4166 return htab->plt_type == PLT_NEW;
d7128ce4
AM
4167}
4168\f
25dbc73a
AM
4169/* Return the section that should be marked against GC for a given
4170 relocation. */
586119b3 4171
25dbc73a
AM
4172static asection *
4173ppc_elf_gc_mark_hook (asection *sec,
07adf181 4174 struct bfd_link_info *info,
25dbc73a
AM
4175 Elf_Internal_Rela *rel,
4176 struct elf_link_hash_entry *h,
4177 Elf_Internal_Sym *sym)
4178{
4179 if (h != NULL)
07adf181
AM
4180 switch (ELF32_R_TYPE (rel->r_info))
4181 {
4182 case R_PPC_GNU_VTINHERIT:
4183 case R_PPC_GNU_VTENTRY:
4184 return NULL;
4185 }
4186
4187 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 4188}
a876ecf9 4189
25dbc73a
AM
4190/* Update the got, plt and dynamic reloc reference counts for the
4191 section being removed. */
4192
4193static bfd_boolean
4194ppc_elf_gc_sweep_hook (bfd *abfd,
4195 struct bfd_link_info *info,
4196 asection *sec,
4197 const Elf_Internal_Rela *relocs)
4198{
4199 struct ppc_elf_link_hash_table *htab;
4200 Elf_Internal_Shdr *symtab_hdr;
4201 struct elf_link_hash_entry **sym_hashes;
4202 bfd_signed_vma *local_got_refcounts;
4203 const Elf_Internal_Rela *rel, *relend;
a6aa5195 4204 asection *got2;
25dbc73a 4205
7dda2462
TG
4206 if (info->relocatable)
4207 return TRUE;
4208
c87b5a93
AM
4209 if ((sec->flags & SEC_ALLOC) == 0)
4210 return TRUE;
4211
25dbc73a
AM
4212 elf_section_data (sec)->local_dynrel = NULL;
4213
4214 htab = ppc_elf_hash_table (info);
0ffa91dd 4215 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
4216 sym_hashes = elf_sym_hashes (abfd);
4217 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 4218 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4219
4220 relend = relocs + sec->reloc_count;
4221 for (rel = relocs; rel < relend; rel++)
4222 {
4223 unsigned long r_symndx;
4224 enum elf_ppc_reloc_type r_type;
4225 struct elf_link_hash_entry *h = NULL;
4226
4227 r_symndx = ELF32_R_SYM (rel->r_info);
4228 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 4229 {
25dbc73a
AM
4230 struct ppc_elf_dyn_relocs **pp, *p;
4231 struct ppc_elf_link_hash_entry *eh;
4232
4233 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4234 while (h->root.type == bfd_link_hash_indirect
4235 || h->root.type == bfd_link_hash_warning)
4236 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4237 eh = (struct ppc_elf_link_hash_entry *) h;
4238
4239 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4240 if (p->sec == sec)
4241 {
4242 /* Everything must go for SEC. */
4243 *pp = p->next;
4244 break;
4245 }
a876ecf9 4246 }
ee05f2fe 4247
25dbc73a
AM
4248 r_type = ELF32_R_TYPE (rel->r_info);
4249 switch (r_type)
ee05f2fe 4250 {
25dbc73a
AM
4251 case R_PPC_GOT_TLSLD16:
4252 case R_PPC_GOT_TLSLD16_LO:
4253 case R_PPC_GOT_TLSLD16_HI:
4254 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4255 case R_PPC_GOT_TLSGD16:
4256 case R_PPC_GOT_TLSGD16_LO:
4257 case R_PPC_GOT_TLSGD16_HI:
4258 case R_PPC_GOT_TLSGD16_HA:
4259 case R_PPC_GOT_TPREL16:
4260 case R_PPC_GOT_TPREL16_LO:
4261 case R_PPC_GOT_TPREL16_HI:
4262 case R_PPC_GOT_TPREL16_HA:
4263 case R_PPC_GOT_DTPREL16:
4264 case R_PPC_GOT_DTPREL16_LO:
4265 case R_PPC_GOT_DTPREL16_HI:
4266 case R_PPC_GOT_DTPREL16_HA:
4267 case R_PPC_GOT16:
4268 case R_PPC_GOT16_LO:
4269 case R_PPC_GOT16_HI:
4270 case R_PPC_GOT16_HA:
4271 if (h != NULL)
ee05f2fe 4272 {
25dbc73a
AM
4273 if (h->got.refcount > 0)
4274 h->got.refcount--;
ee05f2fe 4275 }
25dbc73a
AM
4276 else if (local_got_refcounts != NULL)
4277 {
4278 if (local_got_refcounts[r_symndx] > 0)
4279 local_got_refcounts[r_symndx]--;
4280 }
4281 break;
ee05f2fe 4282
25dbc73a
AM
4283 case R_PPC_REL24:
4284 case R_PPC_REL14:
4285 case R_PPC_REL14_BRTAKEN:
4286 case R_PPC_REL14_BRNTAKEN:
4287 case R_PPC_REL32:
3b36f7e6 4288 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM
4289 break;
4290 /* Fall thru */
ee05f2fe 4291
25dbc73a
AM
4292 case R_PPC_ADDR32:
4293 case R_PPC_ADDR24:
4294 case R_PPC_ADDR16:
4295 case R_PPC_ADDR16_LO:
4296 case R_PPC_ADDR16_HI:
4297 case R_PPC_ADDR16_HA:
4298 case R_PPC_ADDR14:
4299 case R_PPC_ADDR14_BRTAKEN:
4300 case R_PPC_ADDR14_BRNTAKEN:
4301 case R_PPC_UADDR32:
4302 case R_PPC_UADDR16:
87538722
AM
4303 if (info->shared)
4304 break;
4305
25dbc73a
AM
4306 case R_PPC_PLT32:
4307 case R_PPC_PLTREL24:
87538722 4308 case R_PPC_PLTREL32:
25dbc73a
AM
4309 case R_PPC_PLT16_LO:
4310 case R_PPC_PLT16_HI:
4311 case R_PPC_PLT16_HA:
4312 if (h != NULL)
4313 {
a6aa5195
AM
4314 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
4315 struct plt_entry *ent = find_plt_ent (h, got2, addend);
4316 if (ent->plt.refcount > 0)
4317 ent->plt.refcount -= 1;
25dbc73a
AM
4318 }
4319 break;
ee05f2fe 4320
25dbc73a
AM
4321 default:
4322 break;
4323 }
7fce784e 4324 }
7fce784e
AS
4325 return TRUE;
4326}
25dbc73a
AM
4327\f
4328/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7fce784e 4329
25dbc73a
AM
4330asection *
4331ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 4332{
25dbc73a 4333 struct ppc_elf_link_hash_table *htab;
7fce784e 4334
25dbc73a 4335 htab = ppc_elf_hash_table (info);
4a3dc543 4336 if (htab->plt_type == PLT_NEW
d7128ce4
AM
4337 && htab->plt != NULL
4338 && htab->plt->output_section != NULL)
4339 {
4340 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4341 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4342 }
4343
25dbc73a
AM
4344 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4345 FALSE, FALSE, TRUE);
25dbc73a 4346 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
4347}
4348
25dbc73a
AM
4349/* Run through all the TLS relocs looking for optimization
4350 opportunities. */
252b5132 4351
25dbc73a
AM
4352bfd_boolean
4353ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4354 struct bfd_link_info *info)
252b5132 4355{
7fce784e 4356 bfd *ibfd;
25dbc73a
AM
4357 asection *sec;
4358 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 4359 int pass;
252b5132 4360
1d483afe 4361 if (info->relocatable || !info->executable)
25dbc73a 4362 return TRUE;
252b5132 4363
7619e7c7 4364 htab = ppc_elf_hash_table (info);
b7fcf6f6
AM
4365 /* Make two passes through the relocs. First time check that tls
4366 relocs involved in setting up a tls_get_addr call are indeed
4367 followed by such a call. If they are not, exclude them from
4368 the optimizations done on the second pass. */
4369 for (pass = 0; pass < 2; ++pass)
4370 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4371 {
4372 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 4373 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7619e7c7 4374
b7fcf6f6
AM
4375 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4376 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4377 {
4378 Elf_Internal_Rela *relstart, *rel, *relend;
252b5132 4379
b7fcf6f6
AM
4380 /* Read the relocations. */
4381 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4382 info->keep_memory);
4383 if (relstart == NULL)
4384 return FALSE;
7619e7c7 4385
b7fcf6f6
AM
4386 relend = relstart + sec->reloc_count;
4387 for (rel = relstart; rel < relend; rel++)
4388 {
4389 enum elf_ppc_reloc_type r_type;
4390 unsigned long r_symndx;
4391 struct elf_link_hash_entry *h = NULL;
4392 char *tls_mask;
4393 char tls_set, tls_clear;
4394 bfd_boolean is_local;
4395 int expecting_tls_get_addr;
4396 bfd_signed_vma *got_count;
4397
4398 r_symndx = ELF32_R_SYM (rel->r_info);
4399 if (r_symndx >= symtab_hdr->sh_info)
4400 {
4401 struct elf_link_hash_entry **sym_hashes;
7fce784e 4402
b7fcf6f6
AM
4403 sym_hashes = elf_sym_hashes (ibfd);
4404 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4405 while (h->root.type == bfd_link_hash_indirect
4406 || h->root.type == bfd_link_hash_warning)
4407 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4408 }
7619e7c7 4409
b7fcf6f6
AM
4410 expecting_tls_get_addr = 0;
4411 is_local = FALSE;
4412 if (h == NULL
4413 || !h->def_dynamic)
4414 is_local = TRUE;
7619e7c7 4415
b7fcf6f6
AM
4416 r_type = ELF32_R_TYPE (rel->r_info);
4417 switch (r_type)
4418 {
4419 case R_PPC_GOT_TLSLD16:
4420 case R_PPC_GOT_TLSLD16_LO:
4421 expecting_tls_get_addr = 1;
4422 /* Fall thru */
4423
4424 case R_PPC_GOT_TLSLD16_HI:
4425 case R_PPC_GOT_TLSLD16_HA:
4426 /* These relocs should never be against a symbol
4427 defined in a shared lib. Leave them alone if
4428 that turns out to be the case. */
4429 if (!is_local)
4430 continue;
4431
4432 /* LD -> LE */
4433 tls_set = 0;
4434 tls_clear = TLS_LD;
4435 break;
4436
4437 case R_PPC_GOT_TLSGD16:
4438 case R_PPC_GOT_TLSGD16_LO:
4439 expecting_tls_get_addr = 1;
4440 /* Fall thru */
4441
4442 case R_PPC_GOT_TLSGD16_HI:
4443 case R_PPC_GOT_TLSGD16_HA:
4444 if (is_local)
4445 /* GD -> LE */
4446 tls_set = 0;
4447 else
4448 /* GD -> IE */
4449 tls_set = TLS_TLS | TLS_TPRELGD;
4450 tls_clear = TLS_GD;
4451 break;
4452
4453 case R_PPC_GOT_TPREL16:
4454 case R_PPC_GOT_TPREL16_LO:
4455 case R_PPC_GOT_TPREL16_HI:
4456 case R_PPC_GOT_TPREL16_HA:
4457 if (is_local)
4458 {
4459 /* IE -> LE */
4460 tls_set = 0;
4461 tls_clear = TLS_TPREL;
4462 break;
4463 }
4464 else
4465 continue;
4466
4467 default:
25dbc73a 4468 continue;
b7fcf6f6 4469 }
25dbc73a 4470
b7fcf6f6
AM
4471 if (pass == 0)
4472 {
4473 if (!expecting_tls_get_addr)
4474 continue;
25dbc73a 4475
b7fcf6f6
AM
4476 if (rel + 1 < relend)
4477 {
4478 enum elf_ppc_reloc_type r_type2;
4479 unsigned long r_symndx2;
4480 struct elf_link_hash_entry *h2;
4481
4482 /* The next instruction should be a call to
4483 __tls_get_addr. Peek at the reloc to be sure. */
4484 r_type2 = ELF32_R_TYPE (rel[1].r_info);
4485 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
4486 if (r_symndx2 >= symtab_hdr->sh_info
4487 && (r_type2 == R_PPC_REL14
4488 || r_type2 == R_PPC_REL14_BRTAKEN
4489 || r_type2 == R_PPC_REL14_BRNTAKEN
4490 || r_type2 == R_PPC_REL24
4491 || r_type2 == R_PPC_PLTREL24))
4492 {
4493 struct elf_link_hash_entry **sym_hashes;
4494
4495 sym_hashes = elf_sym_hashes (ibfd);
4496 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
4497 while (h2->root.type == bfd_link_hash_indirect
4498 || h2->root.type == bfd_link_hash_warning)
4499 h2 = ((struct elf_link_hash_entry *)
4500 h2->root.u.i.link);
4501 if (h2 == htab->tls_get_addr)
4502 continue;
4503 }
4504 }
25dbc73a 4505
b7fcf6f6
AM
4506 /* Uh oh, we didn't find the expected call. We
4507 could just mark this symbol to exclude it
4508 from tls optimization but it's safer to skip
4509 the entire section. */
4510 sec->has_tls_reloc = 0;
4511 break;
4512 }
25dbc73a 4513
b7fcf6f6
AM
4514 if (h != NULL)
4515 {
4516 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4517 got_count = &h->got.refcount;
4518 }
4519 else
4520 {
4521 Elf_Internal_Sym *sym;
4522 bfd_signed_vma *lgot_refs;
4523 char *lgot_masks;
25dbc73a 4524
b7fcf6f6
AM
4525 if (locsyms == NULL)
4526 {
4527 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4528 if (locsyms == NULL)
4529 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4530 symtab_hdr->sh_info,
4531 0, NULL, NULL, NULL);
4532 if (locsyms == NULL)
4533 {
4534 if (elf_section_data (sec)->relocs != relstart)
4535 free (relstart);
4536 return FALSE;
4537 }
4538 }
4539 sym = locsyms + r_symndx;
4540 lgot_refs = elf_local_got_refcounts (ibfd);
4541 if (lgot_refs == NULL)
4542 abort ();
4543 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4544 tls_mask = &lgot_masks[r_symndx];
4545 got_count = &lgot_refs[r_symndx];
4546 }
25dbc73a 4547
b7fcf6f6
AM
4548 if (tls_set == 0)
4549 {
4550 /* We managed to get rid of a got entry. */
4551 if (*got_count > 0)
4552 *got_count -= 1;
4553 }
25dbc73a 4554
b7fcf6f6
AM
4555 if (expecting_tls_get_addr)
4556 {
4557 struct plt_entry *ent;
25dbc73a 4558
b7fcf6f6
AM
4559 ent = find_plt_ent (htab->tls_get_addr, NULL, 0);
4560 if (ent != NULL && ent->plt.refcount > 0)
4561 ent->plt.refcount -= 1;
4562 }
25dbc73a 4563
b7fcf6f6
AM
4564 *tls_mask |= tls_set;
4565 *tls_mask &= ~tls_clear;
4566 }
25dbc73a 4567
b7fcf6f6
AM
4568 if (elf_section_data (sec)->relocs != relstart)
4569 free (relstart);
4570 }
4571
4572 if (locsyms != NULL
4573 && (symtab_hdr->contents != (unsigned char *) locsyms))
4574 {
4575 if (!info->keep_memory)
4576 free (locsyms);
4577 else
4578 symtab_hdr->contents = (unsigned char *) locsyms;
4579 }
4580 }
25dbc73a
AM
4581 return TRUE;
4582}
4583\f
625af618
AM
4584/* Return true if we have dynamic relocs that apply to read-only sections. */
4585
4586static bfd_boolean
4587readonly_dynrelocs (struct elf_link_hash_entry *h)
4588{
4589 struct ppc_elf_dyn_relocs *p;
4590
4591 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4592 {
4593 asection *s = p->sec->output_section;
4594
4595 if (s != NULL
4596 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4597 == (SEC_READONLY | SEC_ALLOC)))
4598 return TRUE;
4599 }
4600 return FALSE;
4601}
4602
25dbc73a
AM
4603/* Adjust a symbol defined by a dynamic object and referenced by a
4604 regular object. The current definition is in some section of the
4605 dynamic object, but we're not including those sections. We have to
4606 change the definition to something the rest of the link can
4607 understand. */
7fce784e 4608
25dbc73a
AM
4609static bfd_boolean
4610ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4611 struct elf_link_hash_entry *h)
4612{
4613 struct ppc_elf_link_hash_table *htab;
4614 asection *s;
7fce784e 4615
25dbc73a
AM
4616#ifdef DEBUG
4617 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4618 h->root.root.string);
4619#endif
252b5132 4620
25dbc73a
AM
4621 /* Make sure we know what is going on here. */
4622 htab = ppc_elf_hash_table (info);
4623 BFD_ASSERT (htab->elf.dynobj != NULL
4624 && (h->needs_plt
4625 || h->u.weakdef != NULL
4626 || (h->def_dynamic
4627 && h->ref_regular
4628 && !h->def_regular)));
252b5132 4629
25dbc73a
AM
4630 /* Deal with function syms. */
4631 if (h->type == STT_FUNC
4632 || h->needs_plt)
4633 {
4634 /* Clear procedure linkage table information for any symbol that
4635 won't need a .plt entry. */
a6aa5195
AM
4636 struct plt_entry *ent;
4637 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4638 if (ent->plt.refcount > 0)
4639 break;
4640 if (ent == NULL
25dbc73a
AM
4641 || SYMBOL_CALLS_LOCAL (info, h)
4642 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4643 && h->root.type == bfd_link_hash_undefweak))
252b5132 4644 {
25dbc73a 4645 /* A PLT entry is not required/allowed when:
252b5132 4646
25dbc73a
AM
4647 1. We are not using ld.so; because then the PLT entry
4648 can't be set up, so we can't use one. In this case,
4649 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 4650
25dbc73a
AM
4651 2. GC has rendered the entry unused.
4652
4653 3. We know for certain that a call to this symbol
4654 will go to this object, or will remain undefined. */
a6aa5195 4655 h->plt.plist = NULL;
25dbc73a
AM
4656 h->needs_plt = 0;
4657 }
625af618
AM
4658 else
4659 {
4660 /* After adjust_dynamic_symbol, non_got_ref set means that
4661 dyn_relocs for this symbol should be discarded.
4662 If we get here we know we are making a PLT entry for this
4663 symbol, and in an executable we'd normally resolve
4664 relocations against this symbol to the PLT entry. Allow
4665 dynamic relocs if the reference is weak, and the dynamic
4666 relocs will not cause text relocation. */
4667 if (!h->ref_regular_nonweak
4668 && h->non_got_ref
4669 && !htab->is_vxworks
4670 && !ppc_elf_hash_entry (h)->has_sda_refs
4671 && !readonly_dynrelocs (h))
4672 h->non_got_ref = 0;
4673 }
25dbc73a 4674 return TRUE;
252b5132 4675 }
25dbc73a 4676 else
a6aa5195 4677 h->plt.plist = NULL;
252b5132 4678
25dbc73a
AM
4679 /* If this is a weak symbol, and there is a real definition, the
4680 processor independent code will have arranged for us to see the
4681 real definition first, and we can just use the same value. */
4682 if (h->u.weakdef != NULL)
252b5132 4683 {
25dbc73a
AM
4684 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4685 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4686 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4687 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4688 if (ELIMINATE_COPY_RELOCS)
4689 h->non_got_ref = h->u.weakdef->non_got_ref;
4690 return TRUE;
4691 }
dc810e39 4692
25dbc73a
AM
4693 /* This is a reference to a symbol defined by a dynamic object which
4694 is not a function. */
252b5132 4695
25dbc73a
AM
4696 /* If we are creating a shared library, we must presume that the
4697 only references to the symbol are via the global offset table.
4698 For such cases we need not do anything here; the relocations will
4699 be handled correctly by relocate_section. */
4700 if (info->shared)
4701 return TRUE;
252b5132 4702
25dbc73a
AM
4703 /* If there are no references to this symbol that do not use the
4704 GOT, we don't need to generate a copy reloc. */
4705 if (!h->non_got_ref)
4706 return TRUE;
4707
cfd2c773
NS
4708 /* If we didn't find any dynamic relocs in read-only sections, then
4709 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4710 We can't do this if there are any small data relocations. This
4711 doesn't work on VxWorks, where we can not have dynamic
4712 relocations (other than copy and jump slot relocations) in an
4713 executable. */
4dc4a9a5 4714 if (ELIMINATE_COPY_RELOCS
cfd2c773 4715 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
4716 && !htab->is_vxworks
4717 && !h->def_regular
4718 && !readonly_dynrelocs (h))
25dbc73a 4719 {
625af618
AM
4720 h->non_got_ref = 0;
4721 return TRUE;
252b5132
RH
4722 }
4723
909272ee
AM
4724 if (h->size == 0)
4725 {
4726 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4727 h->root.root.string);
4728 return TRUE;
4729 }
4730
25dbc73a
AM
4731 /* We must allocate the symbol in our .dynbss section, which will
4732 become part of the .bss section of the executable. There will be
4733 an entry for this symbol in the .dynsym section. The dynamic
4734 object will contain position independent code, so all references
4735 from the dynamic object to this symbol will go through the global
4736 offset table. The dynamic linker will use the .dynsym entry to
4737 determine the address it must put in the global offset table, so
4738 both the dynamic object and the regular object will refer to the
4739 same memory location for the variable.
4740
4dc4a9a5
DJ
4741 Of course, if the symbol is referenced using SDAREL relocs, we
4742 must instead allocate it in .sbss. */
25dbc73a 4743
4dc4a9a5 4744 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4745 s = htab->dynsbss;
4746 else
4747 s = htab->dynbss;
4748 BFD_ASSERT (s != NULL);
4749
4750 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4751 copy the initial value out of the dynamic object and into the
4752 runtime process image. We need to remember the offset into the
4753 .rela.bss section we are going to use. */
4754 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4755 {
4756 asection *srel;
4757
4dc4a9a5 4758 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4759 srel = htab->relsbss;
4760 else
4761 srel = htab->relbss;
4762 BFD_ASSERT (srel != NULL);
4763 srel->size += sizeof (Elf32_External_Rela);
4764 h->needs_copy = 1;
4765 }
7619e7c7 4766
027297b7 4767 return _bfd_elf_adjust_dynamic_copy (h, s);
25dbc73a
AM
4768}
4769\f
ac39eb42
AM
4770/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4771 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4772 specifying the addend on the plt relocation. For -fpic code, the sym
4773 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4774 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
4775
4776static bfd_boolean
4777add_stub_sym (struct plt_entry *ent,
4778 struct elf_link_hash_entry *h,
ac39eb42 4779 struct bfd_link_info *info)
0ba07910
AM
4780{
4781 struct elf_link_hash_entry *sh;
4782 size_t len1, len2, len3;
4783 char *name;
ac39eb42
AM
4784 const char *stub;
4785 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4786
4787 if (info->shared || info->pie)
4788 stub = ".plt_pic32.";
4789 else
4790 stub = ".plt_call32.";
0ba07910
AM
4791
4792 len1 = strlen (h->root.root.string);
ac39eb42 4793 len2 = strlen (stub);
0ba07910
AM
4794 len3 = 0;
4795 if (ent->sec)
4796 len3 = strlen (ent->sec->name);
ac39eb42 4797 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
4798 if (name == NULL)
4799 return FALSE;
4800 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4801 if (ent->sec)
4802 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
4803 memcpy (name + 8 + len3, stub, len2);
4804 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
4805 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4806 if (sh == NULL)
4807 return FALSE;
4808 if (sh->root.type == bfd_link_hash_new)
4809 {
4810 sh->root.type = bfd_link_hash_defined;
4811 sh->root.u.def.section = htab->glink;
4812 sh->root.u.def.value = ent->glink_offset;
4813 sh->ref_regular = 1;
4814 sh->def_regular = 1;
4815 sh->ref_regular_nonweak = 1;
4816 sh->forced_local = 1;
4817 sh->non_elf = 0;
4818 }
4819 return TRUE;
4820}
4821
3b36f7e6
AM
4822/* Allocate NEED contiguous space in .got, and return the offset.
4823 Handles allocation of the got header when crossing 32k. */
4824
4825static bfd_vma
4826allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4827{
4828 bfd_vma where;
4a3dc543 4829 unsigned int max_before_header;
3b36f7e6 4830
4a3dc543 4831 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
4832 {
4833 where = htab->got->size;
4834 htab->got->size += need;
4835 }
3b36f7e6
AM
4836 else
4837 {
4a3dc543
RS
4838 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4839 if (need <= htab->got_gap)
3b36f7e6 4840 {
4a3dc543
RS
4841 where = max_before_header - htab->got_gap;
4842 htab->got_gap -= need;
4843 }
4844 else
4845 {
4846 if (htab->got->size + need > max_before_header
4847 && htab->got->size <= max_before_header)
4848 {
4849 htab->got_gap = max_before_header - htab->got->size;
4850 htab->got->size = max_before_header + htab->got_header_size;
4851 }
4852 where = htab->got->size;
4853 htab->got->size += need;
3b36f7e6 4854 }
3b36f7e6
AM
4855 }
4856 return where;
4857}
4858
25dbc73a 4859/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 4860
b34976b6 4861static bfd_boolean
25dbc73a 4862allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 4863{
25dbc73a
AM
4864 struct bfd_link_info *info = inf;
4865 struct ppc_elf_link_hash_entry *eh;
7619e7c7 4866 struct ppc_elf_link_hash_table *htab;
25dbc73a 4867 struct ppc_elf_dyn_relocs *p;
252b5132 4868
25dbc73a 4869 if (h->root.type == bfd_link_hash_indirect)
b34976b6 4870 return TRUE;
252b5132 4871
25dbc73a
AM
4872 if (h->root.type == bfd_link_hash_warning)
4873 /* When warning symbols are created, they **replace** the "real"
4874 entry in the hash table, thus we never get to see the real
4875 symbol in a hash traversal. So look at it now. */
4876 h = (struct elf_link_hash_entry *) h->root.u.i.link;
e47cd125 4877
7619e7c7 4878 htab = ppc_elf_hash_table (info);
a6aa5195 4879 if (htab->elf.dynamic_sections_created)
252b5132 4880 {
a6aa5195
AM
4881 struct plt_entry *ent;
4882 bfd_boolean doneone = FALSE;
28e99bb6
AM
4883 bfd_vma plt_offset = 0, glink_offset = 0;
4884
a6aa5195
AM
4885 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4886 if (ent->plt.refcount > 0)
4887 {
4888 /* Make sure this symbol is output as a dynamic symbol. */
4889 if (h->dynindx == -1
4890 && !h->forced_local)
4891 {
4892 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4893 return FALSE;
4894 }
252b5132 4895
a6aa5195
AM
4896 if (info->shared
4897 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4898 {
4899 asection *s = htab->plt;
7619e7c7 4900
4a3dc543 4901 if (htab->plt_type == PLT_NEW)
a6aa5195 4902 {
a6aa5195 4903 if (!doneone)
28e99bb6
AM
4904 {
4905 plt_offset = s->size;
4906 s->size += 4;
4907 }
4908 ent->plt.offset = plt_offset;
d7128ce4 4909
a6aa5195 4910 s = htab->glink;
28e99bb6
AM
4911 if (!doneone || info->shared || info->pie)
4912 {
4913 glink_offset = s->size;
4914 s->size += GLINK_ENTRY_SIZE;
4915 }
4916 if (!doneone
4917 && !info->shared
625af618 4918 && h->def_dynamic
a6aa5195
AM
4919 && !h->def_regular)
4920 {
4921 h->root.u.def.section = s;
28e99bb6 4922 h->root.u.def.value = glink_offset;
a6aa5195 4923 }
28e99bb6 4924 ent->glink_offset = glink_offset;
0ba07910
AM
4925
4926 if (htab->emit_stub_syms
ac39eb42 4927 && !add_stub_sym (ent, h, info))
0ba07910 4928 return FALSE;
a6aa5195
AM
4929 }
4930 else
4931 {
a6aa5195
AM
4932 if (!doneone)
4933 {
28e99bb6
AM
4934 /* If this is the first .plt entry, make room
4935 for the special first entry. */
4936 if (s->size == 0)
9d8504b1 4937 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
4938
4939 /* The PowerPC PLT is actually composed of two
4940 parts, the first part is 2 words (for a load
4941 and a jump), and then there is a remaining
4942 word available at the end. */
9d8504b1
PB
4943 plt_offset = (htab->plt_initial_entry_size
4944 + (htab->plt_slot_size
4945 * ((s->size
4946 - htab->plt_initial_entry_size)
4947 / htab->plt_entry_size)));
28e99bb6
AM
4948
4949 /* If this symbol is not defined in a regular
4950 file, and we are not generating a shared
4951 library, then set the symbol to this location
4952 in the .plt. This is required to make
4953 function pointers compare as equal between
4954 the normal executable and the shared library. */
4955 if (! info->shared
625af618 4956 && h->def_dynamic
28e99bb6
AM
4957 && !h->def_regular)
4958 {
4959 h->root.u.def.section = s;
4960 h->root.u.def.value = plt_offset;
4961 }
4962
9d8504b1
PB
4963 /* Make room for this entry. */
4964 s->size += htab->plt_entry_size;
4965 /* After the 8192nd entry, room for two entries
4966 is allocated. */
4a3dc543 4967 if (htab->plt_type == PLT_OLD
9d8504b1
PB
4968 && (s->size - htab->plt_initial_entry_size)
4969 / htab->plt_entry_size
4970 > PLT_NUM_SINGLE_ENTRIES)
4971 s->size += htab->plt_entry_size;
a6aa5195 4972 }
28e99bb6 4973 ent->plt.offset = plt_offset;
a6aa5195 4974 }
25dbc73a 4975
a6aa5195
AM
4976 /* We also need to make an entry in the .rela.plt section. */
4977 if (!doneone)
4978 {
4979 htab->relplt->size += sizeof (Elf32_External_Rela);
9d8504b1 4980
4a3dc543 4981 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
4982 {
4983 /* Allocate space for the unloaded relocations. */
4984 if (!info->shared)
4985 {
4986 if (ent->plt.offset
4987 == (bfd_vma) htab->plt_initial_entry_size)
4988 {
4989 htab->srelplt2->size
4990 += sizeof (Elf32_External_Rela)
4991 * VXWORKS_PLTRESOLVE_RELOCS;
4992 }
4993
4994 htab->srelplt2->size
4995 += sizeof (Elf32_External_Rela)
4996 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4997 }
4998
4999 /* Every PLT entry has an associated GOT entry in
5000 .got.plt. */
5001 htab->sgotplt->size += 4;
5002 }
a6aa5195
AM
5003 doneone = TRUE;
5004 }
5005 }
5006 else
5007 ent->plt.offset = (bfd_vma) -1;
a6aa5195 5008 }
2ce859a1
AM
5009 else
5010 ent->plt.offset = (bfd_vma) -1;
5011
5012 if (!doneone)
5013 {
5014 h->plt.plist = NULL;
5015 h->needs_plt = 0;
5016 }
25dbc73a
AM
5017 }
5018 else
5019 {
a6aa5195 5020 h->plt.plist = NULL;
25dbc73a
AM
5021 h->needs_plt = 0;
5022 }
5023
5024 eh = (struct ppc_elf_link_hash_entry *) h;
5025 if (eh->elf.got.refcount > 0)
5026 {
5027 /* Make sure this symbol is output as a dynamic symbol. */
5028 if (eh->elf.dynindx == -1
b099ab9f
AM
5029 && !eh->elf.forced_local
5030 && htab->elf.dynamic_sections_created)
25dbc73a
AM
5031 {
5032 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 5033 return FALSE;
25dbc73a 5034 }
252b5132 5035
25dbc73a
AM
5036 if (eh->tls_mask == (TLS_TLS | TLS_LD)
5037 && !eh->elf.def_dynamic)
b7fcf6f6
AM
5038 {
5039 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
5040 htab->tlsld_got.refcount += 1;
5041 eh->elf.got.offset = (bfd_vma) -1;
5042 }
25dbc73a
AM
5043 else
5044 {
5045 bfd_boolean dyn;
3b36f7e6 5046 unsigned int need = 0;
25dbc73a 5047 if ((eh->tls_mask & TLS_TLS) != 0)
252b5132 5048 {
25dbc73a 5049 if ((eh->tls_mask & TLS_LD) != 0)
3b36f7e6 5050 need += 8;
25dbc73a 5051 if ((eh->tls_mask & TLS_GD) != 0)
3b36f7e6 5052 need += 8;
25dbc73a 5053 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
3b36f7e6 5054 need += 4;
25dbc73a 5055 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 5056 need += 4;
252b5132 5057 }
25dbc73a 5058 else
3b36f7e6
AM
5059 need += 4;
5060 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM
5061 dyn = htab->elf.dynamic_sections_created;
5062 if ((info->shared
5063 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5064 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5065 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 5066 {
3b36f7e6
AM
5067 /* All the entries we allocated need relocs.
5068 Except LD only needs one. */
25dbc73a 5069 if ((eh->tls_mask & TLS_LD) != 0)
3b36f7e6
AM
5070 need -= 4;
5071 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 5072 }
25dbc73a
AM
5073 }
5074 }
5075 else
5076 eh->elf.got.offset = (bfd_vma) -1;
252b5132 5077
b099ab9f
AM
5078 if (eh->dyn_relocs == NULL
5079 || !htab->elf.dynamic_sections_created)
25dbc73a 5080 return TRUE;
252b5132 5081
25dbc73a
AM
5082 /* In the shared -Bsymbolic case, discard space allocated for
5083 dynamic pc-relative relocs against symbols which turn out to be
5084 defined in regular objects. For the normal shared case, discard
5085 space for relocs that have become local due to symbol visibility
5086 changes. */
5087
5088 if (info->shared)
5089 {
5090 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 5091 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
5092 generated via assembly. We want calls to protected symbols to
5093 resolve directly to the function rather than going via the plt.
5094 If people want function pointer comparisons to work as expected
5095 then they should avoid writing weird assembly. */
5096 if (SYMBOL_CALLS_LOCAL (info, h))
5097 {
5098 struct ppc_elf_dyn_relocs **pp;
5099
5100 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 5101 {
25dbc73a
AM
5102 p->count -= p->pc_count;
5103 p->pc_count = 0;
5104 if (p->count == 0)
5105 *pp = p->next;
5106 else
5107 pp = &p->next;
252b5132 5108 }
25dbc73a 5109 }
252b5132 5110
3348747a
NS
5111 if (htab->is_vxworks)
5112 {
5113 struct ppc_elf_dyn_relocs **pp;
5114
5115 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5116 {
5117 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5118 *pp = p->next;
5119 else
5120 pp = &p->next;
5121 }
5122 }
5123
89200bf8
AM
5124 /* Discard relocs on undefined symbols that must be local. */
5125 if (eh->dyn_relocs != NULL
5126 && h->root.type == bfd_link_hash_undefined
5127 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5128 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5129 eh->dyn_relocs = NULL;
5130
25dbc73a
AM
5131 /* Also discard relocs on undefined weak syms with non-default
5132 visibility. */
cab87ef9
AM
5133 if (eh->dyn_relocs != NULL
5134 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 5135 {
dfbb6ac9
AM
5136 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5137 eh->dyn_relocs = NULL;
5138
5139 /* Make sure undefined weak symbols are output as a dynamic
5140 symbol in PIEs. */
5141 else if (h->dynindx == -1
5142 && !h->forced_local)
5143 {
5144 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5145 return FALSE;
5146 }
25dbc73a
AM
5147 }
5148 }
5149 else if (ELIMINATE_COPY_RELOCS)
5150 {
5151 /* For the non-shared case, discard space for relocs against
5152 symbols which turn out to need copy relocs or are not
5153 dynamic. */
7619e7c7 5154
25dbc73a 5155 if (!h->non_got_ref
25dbc73a
AM
5156 && !h->def_regular)
5157 {
5158 /* Make sure this symbol is output as a dynamic symbol.
5159 Undefined weak syms won't yet be marked as dynamic. */
5160 if (h->dynindx == -1
5161 && !h->forced_local)
5162 {
5163 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5164 return FALSE;
5165 }
7619e7c7 5166
25dbc73a
AM
5167 /* If that succeeded, we know we'll be keeping all the
5168 relocs. */
5169 if (h->dynindx != -1)
5170 goto keep;
5171 }
252b5132 5172
25dbc73a 5173 eh->dyn_relocs = NULL;
252b5132 5174
25dbc73a
AM
5175 keep: ;
5176 }
252b5132 5177
25dbc73a
AM
5178 /* Finally, allocate space. */
5179 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5180 {
5181 asection *sreloc = elf_section_data (p->sec)->sreloc;
5182 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5183 }
252b5132 5184
25dbc73a
AM
5185 return TRUE;
5186}
7619e7c7 5187
625af618
AM
5188/* Set DF_TEXTREL if we find any dynamic relocs that apply to
5189 read-only sections. */
7619e7c7 5190
25dbc73a 5191static bfd_boolean
625af618 5192maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 5193{
25dbc73a
AM
5194 if (h->root.type == bfd_link_hash_indirect)
5195 return TRUE;
252b5132 5196
25dbc73a
AM
5197 if (h->root.type == bfd_link_hash_warning)
5198 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5199
625af618 5200 if (readonly_dynrelocs (h))
25dbc73a 5201 {
625af618 5202 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 5203
625af618
AM
5204 /* Not an error, just cut short the traversal. */
5205 return FALSE;
25dbc73a
AM
5206 }
5207 return TRUE;
5208}
5209
5210/* Set the sizes of the dynamic sections. */
5211
5212static bfd_boolean
5213ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5214 struct bfd_link_info *info)
5215{
5216 struct ppc_elf_link_hash_table *htab;
5217 asection *s;
5218 bfd_boolean relocs;
5219 bfd *ibfd;
7fce784e 5220
252b5132 5221#ifdef DEBUG
25dbc73a 5222 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 5223#endif
252b5132 5224
25dbc73a
AM
5225 htab = ppc_elf_hash_table (info);
5226 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 5227
25dbc73a
AM
5228 if (elf_hash_table (info)->dynamic_sections_created)
5229 {
5230 /* Set the contents of the .interp section to the interpreter. */
5231 if (info->executable)
5232 {
5233 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5234 BFD_ASSERT (s != NULL);
5235 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5236 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5237 }
5238 }
252b5132 5239
4a3dc543 5240 if (htab->plt_type == PLT_OLD)
d7128ce4 5241 htab->got_header_size = 16;
4a3dc543 5242 else if (htab->plt_type == PLT_NEW)
d7128ce4 5243 htab->got_header_size = 12;
252b5132 5244
25dbc73a
AM
5245 /* Set up .got offsets for local syms, and space for local dynamic
5246 relocs. */
5247 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5248 {
5249 bfd_signed_vma *local_got;
5250 bfd_signed_vma *end_local_got;
5251 char *lgot_masks;
5252 bfd_size_type locsymcount;
5253 Elf_Internal_Shdr *symtab_hdr;
7fce784e 5254
0c8d6e5c 5255 if (!is_ppc_elf (ibfd))
25dbc73a 5256 continue;
7fce784e 5257
25dbc73a
AM
5258 for (s = ibfd->sections; s != NULL; s = s->next)
5259 {
5260 struct ppc_elf_dyn_relocs *p;
252b5132 5261
25dbc73a
AM
5262 for (p = ((struct ppc_elf_dyn_relocs *)
5263 elf_section_data (s)->local_dynrel);
5264 p != NULL;
5265 p = p->next)
5266 {
5267 if (!bfd_is_abs_section (p->sec)
5268 && bfd_is_abs_section (p->sec->output_section))
5269 {
5270 /* Input section has been discarded, either because
5271 it is a copy of a linkonce section or due to
5272 linker script /DISCARD/, so we'll be discarding
5273 the relocs too. */
7fce784e 5274 }
3348747a
NS
5275 else if (htab->is_vxworks
5276 && strcmp (p->sec->output_section->name,
5277 ".tls_vars") == 0)
5278 {
5279 /* Relocations in vxworks .tls_vars sections are
5280 handled specially by the loader. */
5281 }
25dbc73a 5282 else if (p->count != 0)
7fce784e 5283 {
25dbc73a
AM
5284 elf_section_data (p->sec)->sreloc->size
5285 += p->count * sizeof (Elf32_External_Rela);
5286 if ((p->sec->output_section->flags
5287 & (SEC_READONLY | SEC_ALLOC))
5288 == (SEC_READONLY | SEC_ALLOC))
5289 info->flags |= DF_TEXTREL;
7fce784e 5290 }
252b5132 5291 }
252b5132 5292 }
252b5132 5293
25dbc73a
AM
5294 local_got = elf_local_got_refcounts (ibfd);
5295 if (!local_got)
5296 continue;
252b5132 5297
0ffa91dd 5298 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
5299 locsymcount = symtab_hdr->sh_info;
5300 end_local_got = local_got + locsymcount;
5301 lgot_masks = (char *) end_local_got;
25dbc73a
AM
5302 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5303 if (*local_got > 0)
5304 {
5305 if (*lgot_masks == (TLS_TLS | TLS_LD))
5306 {
5307 /* If just an LD reloc, we'll just use
5308 htab->tlsld_got.offset. */
3b36f7e6 5309 htab->tlsld_got.refcount += 1;
25dbc73a
AM
5310 *local_got = (bfd_vma) -1;
5311 }
5312 else
5313 {
3b36f7e6 5314 unsigned int need = 0;
25dbc73a
AM
5315 if ((*lgot_masks & TLS_TLS) != 0)
5316 {
5317 if ((*lgot_masks & TLS_GD) != 0)
3b36f7e6 5318 need += 8;
25dbc73a 5319 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
3b36f7e6 5320 need += 4;
25dbc73a 5321 if ((*lgot_masks & TLS_DTPREL) != 0)
3b36f7e6 5322 need += 4;
25dbc73a
AM
5323 }
5324 else
3b36f7e6
AM
5325 need += 4;
5326 *local_got = allocate_got (htab, need);
25dbc73a 5327 if (info->shared)
3b36f7e6
AM
5328 htab->relgot->size += (need
5329 * (sizeof (Elf32_External_Rela) / 4));
25dbc73a
AM
5330 }
5331 }
5332 else
5333 *local_got = (bfd_vma) -1;
5334 }
252b5132 5335
b7fcf6f6
AM
5336 /* Allocate space for global sym dynamic relocs. */
5337 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5338
3b36f7e6
AM
5339 if (htab->tlsld_got.refcount > 0)
5340 {
5341 htab->tlsld_got.offset = allocate_got (htab, 8);
5342 if (info->shared)
5343 htab->relgot->size += sizeof (Elf32_External_Rela);
5344 }
5345 else
5346 htab->tlsld_got.offset = (bfd_vma) -1;
5347
4a3dc543 5348 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
5349 {
5350 unsigned int g_o_t = 32768;
5351
4d962050
AM
5352 /* If we haven't allocated the header, do so now. When we get here,
5353 for old plt/got the got size will be 0 to 32764 (not allocated),
5354 or 32780 to 65536 (header allocated). For new plt/got, the
5355 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM
5356 if (htab->got->size <= 32768)
5357 {
5358 g_o_t = htab->got->size;
4a3dc543 5359 if (htab->plt_type == PLT_OLD)
4d962050 5360 g_o_t += 4;
3b36f7e6
AM
5361 htab->got->size += htab->got_header_size;
5362 }
3b36f7e6
AM
5363
5364 htab->elf.hgot->root.u.def.value = g_o_t;
5365 }
5366
d7128ce4
AM
5367 if (htab->glink != NULL && htab->glink->size != 0)
5368 {
5369 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM
5370 /* Space for the branch table. */
5371 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5372 /* Pad out to align the start of PLTresolve. */
5373 htab->glink->size += -htab->glink->size & 15;
d7128ce4 5374 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910
AM
5375
5376 if (htab->emit_stub_syms)
5377 {
5378 struct elf_link_hash_entry *sh;
5379 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5380 TRUE, FALSE, FALSE);
5381 if (sh == NULL)
5382 return FALSE;
5383 if (sh->root.type == bfd_link_hash_new)
5384 {
5385 sh->root.type = bfd_link_hash_defined;
5386 sh->root.u.def.section = htab->glink;
5387 sh->root.u.def.value = htab->glink_pltresolve;
5388 sh->ref_regular = 1;
5389 sh->def_regular = 1;
5390 sh->ref_regular_nonweak = 1;
5391 sh->forced_local = 1;
5392 sh->non_elf = 0;
5393 }
5394 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5395 TRUE, FALSE, FALSE);
5396 if (sh == NULL)
5397 return FALSE;
5398 if (sh->root.type == bfd_link_hash_new)
5399 {
5400 sh->root.type = bfd_link_hash_defined;
5401 sh->root.u.def.section = htab->glink;
5402 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5403 sh->ref_regular = 1;
5404 sh->def_regular = 1;
5405 sh->ref_regular_nonweak = 1;
5406 sh->forced_local = 1;
5407 sh->non_elf = 0;
5408 }
5409 }
d7128ce4
AM
5410 }
5411
25dbc73a
AM
5412 /* We've now determined the sizes of the various dynamic sections.
5413 Allocate memory for them. */
5414 relocs = FALSE;
5415 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 5416 {
9d8504b1
PB
5417 bfd_boolean strip_section = TRUE;
5418
25dbc73a
AM
5419 if ((s->flags & SEC_LINKER_CREATED) == 0)
5420 continue;
252b5132 5421
25dbc73a 5422 if (s == htab->plt
d7128ce4 5423 || s == htab->glink
644285ef 5424 || s == htab->got
9d8504b1 5425 || s == htab->sgotplt
c456f082
AM
5426 || s == htab->sbss
5427 || s == htab->dynbss
5428 || s == htab->dynsbss)
25dbc73a 5429 {
9d8504b1
PB
5430 /* We'd like to strip these sections if they aren't needed, but if
5431 we've exported dynamic symbols from them we must leave them.
5432 It's too late to tell BFD to get rid of the symbols. */
7325306f 5433 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
9d8504b1 5434 strip_section = FALSE;
25dbc73a
AM
5435 /* Strip this section if we don't need it; see the
5436 comment below. */
5437 }
c9a2f333
AM
5438 else if (s == htab->sdata[0].section
5439 || s == htab->sdata[1].section)
25dbc73a 5440 {
c9a2f333 5441 /* Strip these too. */
25dbc73a 5442 }
0112cd26 5443 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
25dbc73a 5444 {
c456f082 5445 if (s->size != 0)
25dbc73a
AM
5446 {
5447 /* Remember whether there are any relocation sections. */
5448 relocs = TRUE;
252b5132 5449
25dbc73a
AM
5450 /* We use the reloc_count field as a counter if we need
5451 to copy relocs into the output file. */
5452 s->reloc_count = 0;
252b5132
RH
5453 }
5454 }
25dbc73a
AM
5455 else
5456 {
5457 /* It's not one of our sections, so don't allocate space. */
5458 continue;
5459 }
252b5132 5460
9d8504b1 5461 if (s->size == 0 && strip_section)
25dbc73a 5462 {
c456f082
AM
5463 /* If we don't need this section, strip it from the
5464 output file. This is mostly to handle .rela.bss and
5465 .rela.plt. We must create both sections in
5466 create_dynamic_sections, because they must be created
5467 before the linker maps input sections to output
5468 sections. The linker does that before
5469 adjust_dynamic_symbol is called, and it is that
5470 function which decides whether anything needs to go
5471 into these sections. */
8423293d 5472 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
5473 continue;
5474 }
7fce784e 5475
d7128ce4 5476 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
5477 continue;
5478
25dbc73a
AM
5479 /* Allocate memory for the section contents. */
5480 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5481 if (s->contents == NULL)
5482 return FALSE;
5483 }
252b5132 5484
25dbc73a 5485 if (htab->elf.dynamic_sections_created)
7619e7c7 5486 {
25dbc73a
AM
5487 /* Add some entries to the .dynamic section. We fill in the
5488 values later, in ppc_elf_finish_dynamic_sections, but we
5489 must add the entries now so that we get the correct size for
5490 the .dynamic section. The DT_DEBUG entry is filled in by the
5491 dynamic linker and used by the debugger. */
5492#define add_dynamic_entry(TAG, VAL) \
5493 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 5494
25dbc73a 5495 if (info->executable)
7619e7c7 5496 {
25dbc73a
AM
5497 if (!add_dynamic_entry (DT_DEBUG, 0))
5498 return FALSE;
7619e7c7
AM
5499 }
5500
25dbc73a 5501 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 5502 {
25dbc73a
AM
5503 if (!add_dynamic_entry (DT_PLTGOT, 0)
5504 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5505 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5506 || !add_dynamic_entry (DT_JMPREL, 0))
5507 return FALSE;
5508 }
7619e7c7 5509
d7128ce4
AM
5510 if (htab->glink != NULL && htab->glink->size != 0)
5511 {
1fe44d79 5512 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4
AM
5513 return FALSE;
5514 }
5515
25dbc73a
AM
5516 if (relocs)
5517 {
5518 if (!add_dynamic_entry (DT_RELA, 0)
5519 || !add_dynamic_entry (DT_RELASZ, 0)
5520 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5521 return FALSE;
5522 }
7619e7c7 5523
25dbc73a
AM
5524 /* If any dynamic relocs apply to a read-only section, then we
5525 need a DT_TEXTREL entry. */
5526 if ((info->flags & DF_TEXTREL) == 0)
625af618 5527 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 5528 info);
7619e7c7 5529
25dbc73a
AM
5530 if ((info->flags & DF_TEXTREL) != 0)
5531 {
5532 if (!add_dynamic_entry (DT_TEXTREL, 0))
5533 return FALSE;
7619e7c7 5534 }
7a2b07ff
NS
5535 if (htab->is_vxworks
5536 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5537 return FALSE;
5538 }
25dbc73a
AM
5539#undef add_dynamic_entry
5540
7619e7c7
AM
5541 return TRUE;
5542}
0eb4a168
AM
5543
5544/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5545
5546static bfd_boolean
5547ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5548{
5549 if (h->plt.plist != NULL
5550 && !h->def_regular
5551 && (!h->pointer_equality_needed
5552 || !h->ref_regular_nonweak))
5553 return FALSE;
5554
5555 return _bfd_elf_hash_symbol (h);
5556}
25dbc73a
AM
5557\f
5558#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5559
5560static const int shared_stub_entry[] =
5561 {
5562 0x7c0802a6, /* mflr 0 */
5563 0x429f0005, /* bcl 20, 31, .Lxxx */
5564 0x7d6802a6, /* mflr 11 */
5565 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5566 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5567 0x7c0803a6, /* mtlr 0 */
5568 0x7d6903a6, /* mtctr 11 */
5569 0x4e800420, /* bctr */
5570 };
5571
5572static const int stub_entry[] =
5573 {
5574 0x3d600000, /* lis 11,xxx@ha */
5575 0x396b0000, /* addi 11,11,xxx@l */
5576 0x7d6903a6, /* mtctr 11 */
5577 0x4e800420, /* bctr */
5578 };
5579
5580static bfd_boolean
5581ppc_elf_relax_section (bfd *abfd,
5582 asection *isec,
5583 struct bfd_link_info *link_info,
5584 bfd_boolean *again)
5585{
5586 struct one_fixup
5587 {
5588 struct one_fixup *next;
5589 asection *tsec;
5590 bfd_vma toff;
5591 bfd_vma trampoff;
5592 };
7619e7c7 5593
25dbc73a
AM
5594 Elf_Internal_Shdr *symtab_hdr;
5595 bfd_byte *contents = NULL;
5596 Elf_Internal_Sym *isymbuf = NULL;
5597 Elf_Internal_Rela *internal_relocs = NULL;
5598 Elf_Internal_Rela *irel, *irelend;
5599 struct one_fixup *fixups = NULL;
5600 bfd_boolean changed;
d7128ce4 5601 struct ppc_elf_link_hash_table *htab;
25dbc73a 5602 bfd_size_type trampoff;
a6aa5195 5603 asection *got2;
7619e7c7 5604
25dbc73a 5605 *again = FALSE;
7619e7c7 5606
c87b5a93
AM
5607 /* Nothing to do if there are no relocations, and no need to do
5608 anything with non-alloc sections. */
5609 if ((isec->flags & SEC_ALLOC) == 0
5610 || (isec->flags & SEC_RELOC) == 0
5611 || isec->reloc_count == 0)
25dbc73a 5612 return TRUE;
7619e7c7 5613
25dbc73a
AM
5614 trampoff = (isec->size + 3) & (bfd_vma) -4;
5615 /* Space for a branch around any trampolines. */
5616 trampoff += 4;
7619e7c7 5617
0ffa91dd 5618 symtab_hdr = &elf_symtab_hdr (abfd);
7619e7c7 5619
25dbc73a
AM
5620 /* Get a copy of the native relocations. */
5621 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5622 link_info->keep_memory);
5623 if (internal_relocs == NULL)
5624 goto error_return;
7619e7c7 5625
d7128ce4 5626 htab = ppc_elf_hash_table (link_info);
a6aa5195 5627 got2 = bfd_get_section_by_name (abfd, ".got2");
7619e7c7 5628
a6aa5195 5629 irelend = internal_relocs + isec->reloc_count;
25dbc73a 5630 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 5631 {
25dbc73a
AM
5632 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5633 bfd_vma symaddr, reladdr, toff, roff;
5634 asection *tsec;
5635 struct one_fixup *f;
5636 size_t insn_offset = 0;
5637 bfd_vma max_branch_offset, val;
5638 bfd_byte *hit_addr;
5639 unsigned long t0;
5640 unsigned char sym_type;
7619e7c7 5641
25dbc73a
AM
5642 switch (r_type)
5643 {
5644 case R_PPC_REL24:
5645 case R_PPC_LOCAL24PC:
5646 case R_PPC_PLTREL24:
5647 max_branch_offset = 1 << 25;
5648 break;
7619e7c7 5649
25dbc73a
AM
5650 case R_PPC_REL14:
5651 case R_PPC_REL14_BRTAKEN:
5652 case R_PPC_REL14_BRNTAKEN:
5653 max_branch_offset = 1 << 15;
5654 break;
7619e7c7 5655
25dbc73a
AM
5656 default:
5657 continue;
5658 }
7619e7c7 5659
25dbc73a
AM
5660 /* Get the value of the symbol referred to by the reloc. */
5661 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5662 {
5663 /* A local symbol. */
5664 Elf_Internal_Sym *isym;
7fce784e 5665
25dbc73a
AM
5666 /* Read this BFD's local symbols. */
5667 if (isymbuf == NULL)
5668 {
5669 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5670 if (isymbuf == NULL)
5671 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5672 symtab_hdr->sh_info, 0,
5673 NULL, NULL, NULL);
5674 if (isymbuf == 0)
5675 goto error_return;
5676 }
5677 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5678 if (isym->st_shndx == SHN_UNDEF)
5679 continue; /* We can't do anything with undefined symbols. */
5680 else if (isym->st_shndx == SHN_ABS)
5681 tsec = bfd_abs_section_ptr;
5682 else if (isym->st_shndx == SHN_COMMON)
5683 tsec = bfd_com_section_ptr;
5684 else
5685 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 5686
25dbc73a
AM
5687 toff = isym->st_value;
5688 sym_type = ELF_ST_TYPE (isym->st_info);
5689 }
5690 else
5691 {
5692 /* Global symbol handling. */
5693 unsigned long indx;
5694 struct elf_link_hash_entry *h;
7619e7c7 5695
25dbc73a
AM
5696 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5697 h = elf_sym_hashes (abfd)[indx];
7619e7c7 5698
25dbc73a
AM
5699 while (h->root.type == bfd_link_hash_indirect
5700 || h->root.type == bfd_link_hash_warning)
5701 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5702
a6aa5195
AM
5703 tsec = NULL;
5704 toff = 0;
25dbc73a 5705 if (r_type == R_PPC_PLTREL24
a6aa5195 5706 && htab->plt != NULL)
25dbc73a 5707 {
a6aa5195
AM
5708 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5709
5710 if (ent != NULL)
d7128ce4 5711 {
4a3dc543 5712 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
5713 {
5714 tsec = htab->glink;
5715 toff = ent->glink_offset;
5716 }
5717 else
5718 {
5719 tsec = htab->plt;
5720 toff = ent->plt.offset;
5721 }
d7128ce4 5722 }
25dbc73a 5723 }
a6aa5195
AM
5724 if (tsec != NULL)
5725 ;
25dbc73a
AM
5726 else if (h->root.type == bfd_link_hash_defined
5727 || h->root.type == bfd_link_hash_defweak)
5728 {
5729 tsec = h->root.u.def.section;
5730 toff = h->root.u.def.value;
5731 }
5732 else
5733 continue;
7619e7c7 5734
25dbc73a
AM
5735 sym_type = h->type;
5736 }
7619e7c7 5737
25dbc73a
AM
5738 /* If the branch and target are in the same section, you have
5739 no hope of adding stubs. We'll error out later should the
5740 branch overflow. */
5741 if (tsec == isec)
5742 continue;
5743
5744 /* There probably isn't any reason to handle symbols in
5745 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5746 attribute for a code section, and we are only looking at
5747 branches. However, implement it correctly here as a
5748 reference for other target relax_section functions. */
5749 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5750 {
5751 /* At this stage in linking, no SEC_MERGE symbol has been
5752 adjusted, so all references to such symbols need to be
5753 passed through _bfd_merged_section_offset. (Later, in
5754 relocate_section, all SEC_MERGE symbols *except* for
5755 section symbols have been adjusted.)
5756
5757 gas may reduce relocations against symbols in SEC_MERGE
5758 sections to a relocation against the section symbol when
5759 the original addend was zero. When the reloc is against
5760 a section symbol we should include the addend in the
5761 offset passed to _bfd_merged_section_offset, since the
5762 location of interest is the original symbol. On the
5763 other hand, an access to "sym+addend" where "sym" is not
5764 a section symbol should not include the addend; Such an
5765 access is presumed to be an offset from "sym"; The
5766 location of interest is just "sym". */
5767 if (sym_type == STT_SECTION)
5768 toff += irel->r_addend;
7619e7c7 5769
25dbc73a
AM
5770 toff = _bfd_merged_section_offset (abfd, &tsec,
5771 elf_section_data (tsec)->sec_info,
5772 toff);
7619e7c7 5773
25dbc73a
AM
5774 if (sym_type != STT_SECTION)
5775 toff += irel->r_addend;
5776 }
a6aa5195
AM
5777 /* PLTREL24 addends are special. */
5778 else if (r_type != R_PPC_PLTREL24)
25dbc73a 5779 toff += irel->r_addend;
7619e7c7 5780
7de713b9
AM
5781 /* Attempted -shared link of non-pic code loses. */
5782 if (tsec->output_section == NULL)
5783 continue;
5784
25dbc73a 5785 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7619e7c7 5786
25dbc73a
AM
5787 roff = irel->r_offset;
5788 reladdr = isec->output_section->vma + isec->output_offset + roff;
7619e7c7 5789
25dbc73a
AM
5790 /* If the branch is in range, no need to do anything. */
5791 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5792 continue;
252b5132 5793
25dbc73a
AM
5794 /* Look for an existing fixup to this address. */
5795 for (f = fixups; f ; f = f->next)
5796 if (f->tsec == tsec && f->toff == toff)
5797 break;
5798
5799 if (f == NULL)
7619e7c7 5800 {
25dbc73a
AM
5801 size_t size;
5802 unsigned long stub_rtype;
252b5132 5803
25dbc73a
AM
5804 val = trampoff - roff;
5805 if (val >= max_branch_offset)
5806 /* Oh dear, we can't reach a trampoline. Don't try to add
5807 one. We'll report an error later. */
5808 continue;
252b5132 5809
25dbc73a
AM
5810 if (link_info->shared)
5811 {
5812 size = 4 * ARRAY_SIZE (shared_stub_entry);
5813 insn_offset = 12;
5814 stub_rtype = R_PPC_RELAX32PC;
5815 }
5816 else
5817 {
5818 size = 4 * ARRAY_SIZE (stub_entry);
5819 insn_offset = 0;
5820 stub_rtype = R_PPC_RELAX32;
5821 }
dc810e39 5822
25dbc73a
AM
5823 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5824 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5825 abort ();
d7128ce4
AM
5826 if (tsec == htab->plt
5827 || tsec == htab->glink)
25dbc73a 5828 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
252b5132 5829
25dbc73a
AM
5830 /* Hijack the old relocation. Since we need two
5831 relocations for this use a "composite" reloc. */
5832 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5833 stub_rtype);
5834 irel->r_offset = trampoff + insn_offset;
e7d92e2e
AM
5835 if (r_type == R_PPC_PLTREL24)
5836 irel->r_addend = 0;
252b5132 5837
25dbc73a
AM
5838 /* Record the fixup so we don't do it again this section. */
5839 f = bfd_malloc (sizeof (*f));
5840 f->next = fixups;
5841 f->tsec = tsec;
5842 f->toff = toff;
5843 f->trampoff = trampoff;
5844 fixups = f;
252b5132 5845
25dbc73a
AM
5846 trampoff += size;
5847 }
5848 else
5849 {
5850 val = f->trampoff - roff;
5851 if (val >= max_branch_offset)
5852 continue;
252b5132 5853
25dbc73a
AM
5854 /* Nop out the reloc, since we're finalizing things here. */
5855 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5856 }
252b5132 5857
25dbc73a
AM
5858 /* Get the section contents. */
5859 if (contents == NULL)
5860 {
5861 /* Get cached copy if it exists. */
5862 if (elf_section_data (isec)->this_hdr.contents != NULL)
5863 contents = elf_section_data (isec)->this_hdr.contents;
5864 else
5865 {
5866 /* Go get them off disk. */
5867 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5868 goto error_return;
5869 }
5870 }
252b5132 5871
25dbc73a
AM
5872 /* Fix up the existing branch to hit the trampoline. */
5873 hit_addr = contents + roff;
5874 switch (r_type)
5875 {
5876 case R_PPC_REL24:
5877 case R_PPC_LOCAL24PC:
5878 case R_PPC_PLTREL24:
5879 t0 = bfd_get_32 (abfd, hit_addr);
5880 t0 &= ~0x3fffffc;
5881 t0 |= val & 0x3fffffc;
5882 bfd_put_32 (abfd, t0, hit_addr);
5883 break;
252b5132 5884
25dbc73a
AM
5885 case R_PPC_REL14:
5886 case R_PPC_REL14_BRTAKEN:
5887 case R_PPC_REL14_BRNTAKEN:
5888 t0 = bfd_get_32 (abfd, hit_addr);
5889 t0 &= ~0xfffc;
5890 t0 |= val & 0xfffc;
5891 bfd_put_32 (abfd, t0, hit_addr);
5892 break;
5893 }
5894 }
252b5132 5895
25dbc73a
AM
5896 /* Write out the trampolines. */
5897 changed = fixups != NULL;
5898 if (fixups != NULL)
5899 {
5900 const int *stub;
5901 bfd_byte *dest;
5902 bfd_vma val;
5903 int i, size;
252b5132 5904
25dbc73a
AM
5905 do
5906 {
5907 struct one_fixup *f = fixups;
5908 fixups = fixups->next;
5909 free (f);
5910 }
5911 while (fixups);
252b5132 5912
515ef31d 5913 contents = bfd_realloc_or_free (contents, trampoff);
25dbc73a
AM
5914 if (contents == NULL)
5915 goto error_return;
252b5132 5916
25dbc73a
AM
5917 isec->size = (isec->size + 3) & (bfd_vma) -4;
5918 /* Branch around the trampolines. */
e7d92e2e 5919 val = B + trampoff - isec->size;
25dbc73a
AM
5920 dest = contents + isec->size;
5921 isec->size = trampoff;
5922 bfd_put_32 (abfd, val, dest);
5923 dest += 4;
252b5132 5924
25dbc73a
AM
5925 if (link_info->shared)
5926 {
5927 stub = shared_stub_entry;
5928 size = ARRAY_SIZE (shared_stub_entry);
5929 }
5930 else
5931 {
5932 stub = stub_entry;
5933 size = ARRAY_SIZE (stub_entry);
5934 }
252b5132 5935
25dbc73a
AM
5936 i = 0;
5937 while (dest < contents + trampoff)
252b5132 5938 {
25dbc73a
AM
5939 bfd_put_32 (abfd, stub[i], dest);
5940 i++;
5941 if (i == size)
5942 i = 0;
5943 dest += 4;
252b5132 5944 }
25dbc73a 5945 BFD_ASSERT (i == 0);
252b5132
RH
5946 }
5947
25dbc73a
AM
5948 if (isymbuf != NULL
5949 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 5950 {
25dbc73a
AM
5951 if (! link_info->keep_memory)
5952 free (isymbuf);
252b5132 5953 else
25dbc73a
AM
5954 {
5955 /* Cache the symbols for elf_link_input_bfd. */
5956 symtab_hdr->contents = (unsigned char *) isymbuf;
5957 }
252b5132
RH
5958 }
5959
25dbc73a
AM
5960 if (contents != NULL
5961 && elf_section_data (isec)->this_hdr.contents != contents)
5962 {
5963 if (!changed && !link_info->keep_memory)
5964 free (contents);
5965 else
5966 {
5967 /* Cache the section contents for elf_link_input_bfd. */
5968 elf_section_data (isec)->this_hdr.contents = contents;
5969 }
5970 }
252b5132 5971
25dbc73a
AM
5972 if (elf_section_data (isec)->relocs != internal_relocs)
5973 {
5974 if (!changed)
5975 free (internal_relocs);
5976 else
5977 elf_section_data (isec)->relocs = internal_relocs;
5978 }
252b5132 5979
25dbc73a 5980 *again = changed;
b34976b6 5981 return TRUE;
25dbc73a
AM
5982
5983 error_return:
5984 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5985 free (isymbuf);
5986 if (contents != NULL
5987 && elf_section_data (isec)->this_hdr.contents != contents)
5988 free (contents);
5989 if (internal_relocs != NULL
5990 && elf_section_data (isec)->relocs != internal_relocs)
5991 free (internal_relocs);
5992 return FALSE;
252b5132 5993}
252b5132 5994\f
8a696751
AM
5995/* What to do when ld finds relocations against symbols defined in
5996 discarded sections. */
5997
5998static unsigned int
5999ppc_elf_action_discarded (asection *sec)
6000{
6001 if (strcmp (".fixup", sec->name) == 0)
6002 return 0;
6003
6004 if (strcmp (".got2", sec->name) == 0)
6005 return 0;
6006
6007 return _bfd_elf_default_action_discarded (sec);
6008}
c9a2f333 6009\f
25dbc73a 6010/* Fill in the address for a pointer generated in a linker section. */
252b5132 6011
25dbc73a 6012static bfd_vma
76750a2f 6013elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
6014 elf_linker_section_t *lsect,
6015 struct elf_link_hash_entry *h,
6016 bfd_vma relocation,
2bb04cf2 6017 const Elf_Internal_Rela *rel)
25dbc73a
AM
6018{
6019 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 6020
25dbc73a 6021 BFD_ASSERT (lsect != NULL);
252b5132 6022
25dbc73a 6023 if (h != NULL)
252b5132 6024 {
25dbc73a
AM
6025 /* Handle global symbol. */
6026 struct ppc_elf_link_hash_entry *eh;
252b5132 6027
25dbc73a 6028 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
6029 BFD_ASSERT (eh->elf.def_regular);
6030 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
6031 }
6032 else
6033 {
6034 /* Handle local symbol. */
6035 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 6036
0c8d6e5c 6037 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 6038 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
6039 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6040 }
252b5132 6041
76750a2f
AM
6042 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6043 rel->r_addend,
6044 lsect);
6045 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 6046
76750a2f
AM
6047 /* Offset will always be a multiple of four, so use the bottom bit
6048 as a "written" flag. */
6049 if ((linker_section_ptr->offset & 1) == 0)
6050 {
6051 bfd_put_32 (lsect->section->owner,
6052 relocation + linker_section_ptr->addend,
6053 lsect->section->contents + linker_section_ptr->offset);
6054 linker_section_ptr->offset += 1;
252b5132
RH
6055 }
6056
25dbc73a 6057 relocation = (lsect->section->output_offset
76750a2f 6058 + linker_section_ptr->offset - 1
c9a2f333 6059 - 0x8000);
252b5132 6060
25dbc73a
AM
6061#ifdef DEBUG
6062 fprintf (stderr,
6063 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6064 lsect->name, (long) relocation, (long) relocation);
6065#endif
252b5132 6066
25dbc73a
AM
6067 /* Subtract out the addend, because it will get added back in by the normal
6068 processing. */
6069 return relocation - linker_section_ptr->addend;
252b5132 6070}
25dbc73a 6071
252b5132
RH
6072/* The RELOCATE_SECTION function is called by the ELF backend linker
6073 to handle the relocations for a section.
6074
6075 The relocs are always passed as Rela structures; if the section
6076 actually uses Rel structures, the r_addend field will always be
6077 zero.
6078
6079 This function is responsible for adjust the section contents as
6080 necessary, and (if using Rela relocs and generating a
1049f94e 6081 relocatable output file) adjusting the reloc addend as
252b5132
RH
6082 necessary.
6083
6084 This function does not have to worry about setting the reloc
6085 address or the reloc symbol index.
6086
6087 LOCAL_SYMS is a pointer to the swapped in local symbols.
6088
6089 LOCAL_SECTIONS is an array giving the section in the input file
6090 corresponding to the st_shndx field of each local symbol.
6091
6092 The global hash table entry for the global symbols can be found
6093 via elf_sym_hashes (input_bfd).
6094
1049f94e 6095 When generating relocatable output, this function must handle
252b5132
RH
6096 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6097 going to be the section symbol corresponding to the output
6098 section, which means that the addend must be adjusted
6099 accordingly. */
6100
b34976b6 6101static bfd_boolean
55fd94b0
AM
6102ppc_elf_relocate_section (bfd *output_bfd,
6103 struct bfd_link_info *info,
6104 bfd *input_bfd,
6105 asection *input_section,
6106 bfd_byte *contents,
6107 Elf_Internal_Rela *relocs,
6108 Elf_Internal_Sym *local_syms,
6109 asection **local_sections)
252b5132 6110{
7619e7c7
AM
6111 Elf_Internal_Shdr *symtab_hdr;
6112 struct elf_link_hash_entry **sym_hashes;
6113 struct ppc_elf_link_hash_table *htab;
6114 Elf_Internal_Rela *rel;
6115 Elf_Internal_Rela *relend;
6116 Elf_Internal_Rela outrel;
6117 bfd_byte *loc;
a6aa5195 6118 asection *got2, *sreloc = NULL;
252b5132 6119 bfd_vma *local_got_offsets;
b34976b6 6120 bfd_boolean ret = TRUE;
4fe5ca5b 6121 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 6122 bfd_boolean is_vxworks_tls;
b34976b6 6123
252b5132 6124#ifdef DEBUG
d003868e
AM
6125 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6126 "%ld relocations%s",
6127 input_bfd, input_section,
6128 (long) input_section->reloc_count,
6129 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH
6130#endif
6131
a6aa5195
AM
6132 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6133
e47cd125 6134 /* Initialize howto table if not already done. */
8da6118f 6135 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
6136 ppc_elf_howto_init ();
6137
7619e7c7 6138 htab = ppc_elf_hash_table (info);
252b5132 6139 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 6140 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 6141 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
6142 /* We have to handle relocations in vxworks .tls_vars sections
6143 specially, because the dynamic loader is 'weird'. */
6144 is_vxworks_tls = (htab->is_vxworks && info->shared
6145 && !strcmp (input_section->output_section->name,
6146 ".tls_vars"));
7619e7c7
AM
6147 rel = relocs;
6148 relend = relocs + input_section->reloc_count;
252b5132
RH
6149 for (; rel < relend; rel++)
6150 {
7619e7c7
AM
6151 enum elf_ppc_reloc_type r_type;
6152 bfd_vma addend;
6153 bfd_reloc_status_type r;
6154 Elf_Internal_Sym *sym;
6155 asection *sec;
6156 struct elf_link_hash_entry *h;
6157 const char *sym_name;
252b5132
RH
6158 reloc_howto_type *howto;
6159 unsigned long r_symndx;
6160 bfd_vma relocation;
7619e7c7 6161 bfd_vma branch_bit, insn, from;
7619e7c7
AM
6162 bfd_boolean unresolved_reloc;
6163 bfd_boolean warned;
6164 unsigned int tls_type, tls_mask, tls_gd;
6165
55fd94b0
AM
6166 r_type = ELF32_R_TYPE (rel->r_info);
6167 sym = NULL;
6168 sec = NULL;
6169 h = NULL;
7619e7c7
AM
6170 unresolved_reloc = FALSE;
6171 warned = FALSE;
252b5132 6172 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 6173
252b5132
RH
6174 if (r_symndx < symtab_hdr->sh_info)
6175 {
6176 sym = local_syms + r_symndx;
6177 sec = local_sections[r_symndx];
26c61ae5 6178 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 6179
8517fae7 6180 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
6181 }
6182 else
6183 {
b2a8e766
AM
6184 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6185 r_symndx, symtab_hdr, sym_hashes,
6186 h, sec, relocation,
6187 unresolved_reloc, warned);
9abc968f 6188
252b5132 6189 sym_name = h->root.root.string;
7619e7c7
AM
6190 }
6191
ab96bf03
AM
6192 if (sec != NULL && elf_discarded_section (sec))
6193 {
6194 /* For relocs against symbols from removed linkonce sections,
6195 or sections discarded by a linker script, we just want the
6196 section contents zeroed. Avoid any special processing. */
6197 howto = NULL;
6198 if (r_type < R_PPC_max)
6199 howto = ppc_elf_howto_table[r_type];
6200 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6201 rel->r_info = 0;
6202 rel->r_addend = 0;
6203 continue;
6204 }
6205
6206 if (info->relocatable)
6207 {
6208 if (got2 != NULL
6209 && r_type == R_PPC_PLTREL24
6210 && rel->r_addend >= 32768)
6211 {
6212 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6213 addend specifies the GOT pointer offset within .got2. */
6214 rel->r_addend += got2->output_offset;
6215 }
6216 continue;
6217 }
6218
7619e7c7
AM
6219 /* TLS optimizations. Replace instruction sequences and relocs
6220 based on information we collected in tls_optimize. We edit
6221 RELOCS so that --emit-relocs will output something sensible
6222 for the final instruction stream. */
6223 tls_mask = 0;
6224 tls_gd = 0;
6225 if (IS_PPC_TLS_RELOC (r_type))
6226 {
6227 if (h != NULL)
6228 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6229 else if (local_got_offsets != NULL)
6230 {
6231 char *lgot_masks;
6232 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
6233 tls_mask = lgot_masks[r_symndx];
6234 }
6235 }
6236
6237 /* Ensure reloc mapping code below stays sane. */
6238 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6239 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6240 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6241 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6242 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6243 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6244 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6245 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6246 abort ();
6247 switch (r_type)
6248 {
6249 default:
6250 break;
6251
6252 case R_PPC_GOT_TPREL16:
6253 case R_PPC_GOT_TPREL16_LO:
6254 if (tls_mask != 0
6255 && (tls_mask & TLS_TPREL) == 0)
6256 {
6257 bfd_vma insn;
4fe5ca5b 6258 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7619e7c7
AM
6259 insn &= 31 << 21;
6260 insn |= 0x3c020000; /* addis 0,2,0 */
4fe5ca5b 6261 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7619e7c7
AM
6262 r_type = R_PPC_TPREL16_HA;
6263 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6264 }
6265 break;
6266
6267 case R_PPC_TLS:
6268 if (tls_mask != 0
6269 && (tls_mask & TLS_TPREL) == 0)
6270 {
6271 bfd_vma insn, rtra;
6272 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6273 if ((insn & ((31 << 26) | (31 << 11)))
6274 == ((31 << 26) | (2 << 11)))
6275 rtra = insn & ((1 << 26) - (1 << 16));
6276 else if ((insn & ((31 << 26) | (31 << 16)))
6277 == ((31 << 26) | (2 << 16)))
6278 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6279 else
6280 abort ();
6281 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6282 /* add -> addi. */
6283 insn = 14 << 26;
6284 else if ((insn & (31 << 1)) == 23 << 1
6285 && ((insn & (31 << 6)) < 14 << 6
6286 || ((insn & (31 << 6)) >= 16 << 6
6287 && (insn & (31 << 6)) < 24 << 6)))
6288 /* load and store indexed -> dform. */
6289 insn = (32 | ((insn >> 6) & 31)) << 26;
6290 else if ((insn & (31 << 1)) == 21 << 1
6291 && (insn & (0x1a << 6)) == 0)
6292 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6293 insn = (((58 | ((insn >> 6) & 4)) << 26)
6294 | ((insn >> 6) & 1));
6295 else if ((insn & (31 << 1)) == 21 << 1
6296 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6297 /* lwax -> lwa. */
6298 insn = (58 << 26) | 2;
6299 else
6300 abort ();
6301 insn |= rtra;
6302 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6303 r_type = R_PPC_TPREL16_LO;
6304 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 6305
7619e7c7 6306 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
6307 PPC_TPREL16_LO which is at low-order half-word. */
6308 rel->r_offset += d_offset;
7619e7c7
AM
6309 }
6310 break;
6311
6312 case R_PPC_GOT_TLSGD16_HI:
6313 case R_PPC_GOT_TLSGD16_HA:
6314 tls_gd = TLS_TPRELGD;
6315 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6316 goto tls_gdld_hi;
6317 break;
6318
6319 case R_PPC_GOT_TLSLD16_HI:
6320 case R_PPC_GOT_TLSLD16_HA:
6321 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6322 {
6323 tls_gdld_hi:
6324 if ((tls_mask & tls_gd) != 0)
6325 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6326 + R_PPC_GOT_TPREL16);
6327 else
6328 {
6329 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 6330 rel->r_offset -= d_offset;
7619e7c7
AM
6331 r_type = R_PPC_NONE;
6332 }
6333 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6334 }
6335 break;
6336
6337 case R_PPC_GOT_TLSGD16:
6338 case R_PPC_GOT_TLSGD16_LO:
6339 tls_gd = TLS_TPRELGD;
6340 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 6341 goto tls_ldgd_opt;
7619e7c7
AM
6342 break;
6343
6344 case R_PPC_GOT_TLSLD16:
6345 case R_PPC_GOT_TLSLD16_LO:
6346 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6347 {
b7fcf6f6
AM
6348 bfd_vma insn1, insn2;
6349 bfd_vma offset;
7619e7c7 6350
b7fcf6f6
AM
6351 tls_ldgd_opt:
6352 offset = rel[1].r_offset;
6353 insn1 = bfd_get_32 (output_bfd,
6354 contents + rel->r_offset - d_offset);
6355 if ((tls_mask & tls_gd) != 0)
6356 {
6357 /* IE */
6358 insn1 &= (1 << 26) - 1;
6359 insn1 |= 32 << 26; /* lwz */
6360 insn2 = 0x7c631214; /* add 3,3,2 */
6361 rel[1].r_info
6362 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info), R_PPC_NONE);
6363 rel[1].r_addend = 0;
6364 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6365 + R_PPC_GOT_TPREL16);
6366 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6367 }
6368 else
6369 {
6370 /* LE */
6371 insn1 = 0x3c620000; /* addis 3,2,0 */
6372 insn2 = 0x38630000; /* addi 3,3,0 */
7619e7c7
AM
6373 if (tls_gd == 0)
6374 {
b7fcf6f6 6375 /* Was an LD reloc. */
1d483afe
AM
6376 for (r_symndx = 0;
6377 r_symndx < symtab_hdr->sh_info;
6378 r_symndx++)
6379 if (local_sections[r_symndx] == sec)
6380 break;
6381 if (r_symndx >= symtab_hdr->sh_info)
6382 r_symndx = 0;
b7fcf6f6 6383 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
1d483afe
AM
6384 if (r_symndx != 0)
6385 rel->r_addend -= (local_syms[r_symndx].st_value
6386 + sec->output_offset
6387 + sec->output_section->vma);
7619e7c7 6388 }
b7fcf6f6
AM
6389 r_type = R_PPC_TPREL16_HA;
6390 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6391 rel[1].r_info = ELF32_R_INFO (r_symndx,
6392 R_PPC_TPREL16_LO);
6393 rel[1].r_offset += d_offset;
6394 rel[1].r_addend = rel->r_addend;
6395 }
6396 bfd_put_32 (output_bfd, insn1,
6397 contents + rel->r_offset - d_offset);
6398 bfd_put_32 (output_bfd, insn2, contents + offset);
6399 if (tls_gd == 0)
6400 {
6401 /* We changed the symbol on an LD reloc. Start over
6402 in order to get h, sym, sec etc. right. */
6403 rel--;
6404 continue;
7619e7c7 6405 }
252b5132 6406 }
7619e7c7
AM
6407 break;
6408 }
6409
6410 /* Handle other relocations that tweak non-addend part of insn. */
6411 branch_bit = 0;
6412 switch (r_type)
6413 {
6414 default:
6415 break;
6416
6417 /* Branch taken prediction relocations. */
6418 case R_PPC_ADDR14_BRTAKEN:
6419 case R_PPC_REL14_BRTAKEN:
6420 branch_bit = BRANCH_PREDICT_BIT;
6421 /* Fall thru */
6422
4cc11e76 6423 /* Branch not taken prediction relocations. */
7619e7c7
AM
6424 case R_PPC_ADDR14_BRNTAKEN:
6425 case R_PPC_REL14_BRNTAKEN:
6426 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6427 insn &= ~BRANCH_PREDICT_BIT;
6428 insn |= branch_bit;
6429
6430 from = (rel->r_offset
6431 + input_section->output_offset
6432 + input_section->output_section->vma);
6433
6434 /* Invert 'y' bit if not the default. */
6435 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6436 insn ^= BRANCH_PREDICT_BIT;
6437
6438 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6439 break;
252b5132
RH
6440 }
6441
7619e7c7
AM
6442 addend = rel->r_addend;
6443 tls_type = 0;
6444 howto = NULL;
55fd94b0
AM
6445 if (r_type < R_PPC_max)
6446 howto = ppc_elf_howto_table[r_type];
7619e7c7 6447 switch (r_type)
252b5132
RH
6448 {
6449 default:
7619e7c7 6450 (*_bfd_error_handler)
d003868e
AM
6451 (_("%B: unknown relocation type %d for symbol %s"),
6452 input_bfd, (int) r_type, sym_name);
252b5132
RH
6453
6454 bfd_set_error (bfd_error_bad_value);
b34976b6 6455 ret = FALSE;
252b5132
RH
6456 continue;
6457
7619e7c7
AM
6458 case R_PPC_NONE:
6459 case R_PPC_TLS:
6460 case R_PPC_EMB_MRKREF:
6461 case R_PPC_GNU_VTINHERIT:
6462 case R_PPC_GNU_VTENTRY:
7595d193
L
6463 continue;
6464
7619e7c7
AM
6465 /* GOT16 relocations. Like an ADDR16 using the symbol's
6466 address in the GOT as relocation value instead of the
6467 symbol's value itself. Also, create a GOT entry for the
6468 symbol and put the symbol value there. */
6469 case R_PPC_GOT_TLSGD16:
6470 case R_PPC_GOT_TLSGD16_LO:
6471 case R_PPC_GOT_TLSGD16_HI:
6472 case R_PPC_GOT_TLSGD16_HA:
6473 tls_type = TLS_TLS | TLS_GD;
6474 goto dogot;
6475
6476 case R_PPC_GOT_TLSLD16:
6477 case R_PPC_GOT_TLSLD16_LO:
6478 case R_PPC_GOT_TLSLD16_HI:
6479 case R_PPC_GOT_TLSLD16_HA:
6480 tls_type = TLS_TLS | TLS_LD;
6481 goto dogot;
6482
6483 case R_PPC_GOT_TPREL16:
6484 case R_PPC_GOT_TPREL16_LO:
6485 case R_PPC_GOT_TPREL16_HI:
6486 case R_PPC_GOT_TPREL16_HA:
6487 tls_type = TLS_TLS | TLS_TPREL;
6488 goto dogot;
6489
6490 case R_PPC_GOT_DTPREL16:
6491 case R_PPC_GOT_DTPREL16_LO:
6492 case R_PPC_GOT_DTPREL16_HI:
6493 case R_PPC_GOT_DTPREL16_HA:
6494 tls_type = TLS_TLS | TLS_DTPREL;
6495 goto dogot;
6496
6497 case R_PPC_GOT16:
6498 case R_PPC_GOT16_LO:
6499 case R_PPC_GOT16_HI:
6500 case R_PPC_GOT16_HA:
6501 dogot:
6502 {
6503 /* Relocation is to the entry for this symbol in the global
6504 offset table. */
6505 bfd_vma off;
6506 bfd_vma *offp;
6507 unsigned long indx;
6508
6509 if (htab->got == NULL)
6510 abort ();
6511
6512 indx = 0;
6513 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 6514 && (h == NULL
f5385ebf 6515 || !h->def_dynamic))
7619e7c7
AM
6516 offp = &htab->tlsld_got.offset;
6517 else if (h != NULL)
6518 {
6519 bfd_boolean dyn;
6520 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 6521 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM
6522 || (info->shared
6523 && SYMBOL_REFERENCES_LOCAL (info, h)))
6524 /* This is actually a static link, or it is a
6525 -Bsymbolic link and the symbol is defined
6526 locally, or the symbol was forced to be local
6527 because of a version file. */
6528 ;
6529 else
6530 {
6531 indx = h->dynindx;
6532 unresolved_reloc = FALSE;
6533 }
6534 offp = &h->got.offset;
6535 }
6536 else
6537 {
6538 if (local_got_offsets == NULL)
6539 abort ();
6540 offp = &local_got_offsets[r_symndx];
6541 }
6542
6543 /* The offset must always be a multiple of 4. We use the
6544 least significant bit to record whether we have already
6545 processed this entry. */
6546 off = *offp;
6547 if ((off & 1) != 0)
6548 off &= ~1;
6549 else
6550 {
70bccea4
AM
6551 unsigned int tls_m = (tls_mask
6552 & (TLS_LD | TLS_GD | TLS_DTPREL
6553 | TLS_TPREL | TLS_TPRELGD));
6554
6555 if (offp == &htab->tlsld_got.offset)
6556 tls_m = TLS_LD;
6557 else if (h == NULL
f5385ebf 6558 || !h->def_dynamic)
70bccea4
AM
6559 tls_m &= ~TLS_LD;
6560
6561 /* We might have multiple got entries for this sym.
6562 Initialize them all. */
6563 do
7619e7c7 6564 {
70bccea4
AM
6565 int tls_ty = 0;
6566
6567 if ((tls_m & TLS_LD) != 0)
7619e7c7 6568 {
70bccea4
AM
6569 tls_ty = TLS_TLS | TLS_LD;
6570 tls_m &= ~TLS_LD;
6571 }
6572 else if ((tls_m & TLS_GD) != 0)
6573 {
6574 tls_ty = TLS_TLS | TLS_GD;
6575 tls_m &= ~TLS_GD;
6576 }
6577 else if ((tls_m & TLS_DTPREL) != 0)
6578 {
6579 tls_ty = TLS_TLS | TLS_DTPREL;
6580 tls_m &= ~TLS_DTPREL;
6581 }
6582 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6583 {
6584 tls_ty = TLS_TLS | TLS_TPREL;
6585 tls_m = 0;
7619e7c7 6586 }
7619e7c7 6587
70bccea4 6588 /* Generate relocs for the dynamic linker. */
4e795f50
AM
6589 if ((info->shared || indx != 0)
6590 && (h == NULL
6591 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6592 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 6593 {
70bccea4
AM
6594 outrel.r_offset = (htab->got->output_section->vma
6595 + htab->got->output_offset
6596 + off);
e515b051 6597 outrel.r_addend = 0;
70bccea4
AM
6598 if (tls_ty & (TLS_LD | TLS_GD))
6599 {
6600 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
6601 if (tls_ty == (TLS_TLS | TLS_GD))
6602 {
6603 loc = htab->relgot->contents;
6604 loc += (htab->relgot->reloc_count++
6605 * sizeof (Elf32_External_Rela));
6606 bfd_elf32_swap_reloca_out (output_bfd,
6607 &outrel, loc);
e515b051 6608 outrel.r_offset += 4;
70bccea4
AM
6609 outrel.r_info
6610 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
6611 }
6612 }
6613 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6614 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6615 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6616 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6617 else if (indx == 0)
6618 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6619 else
6620 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
70bccea4 6621 if (indx == 0)
e515b051
AM
6622 {
6623 outrel.r_addend += relocation;
6624 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 6625 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 6626 }
70bccea4
AM
6627 loc = htab->relgot->contents;
6628 loc += (htab->relgot->reloc_count++
6629 * sizeof (Elf32_External_Rela));
6630 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
6631 }
6632
70bccea4
AM
6633 /* Init the .got section contents if we're not
6634 emitting a reloc. */
6635 else
7619e7c7 6636 {
70bccea4
AM
6637 bfd_vma value = relocation;
6638
7b609f53
AM
6639 if (tls_ty == (TLS_TLS | TLS_LD))
6640 value = 1;
6641 else if (tls_ty != 0)
70bccea4 6642 {
e1918d23 6643 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 6644 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 6645 value += DTP_OFFSET - TP_OFFSET;
70bccea4 6646
7b609f53
AM
6647 if (tls_ty == (TLS_TLS | TLS_GD))
6648 {
6649 bfd_put_32 (output_bfd, value,
6650 htab->got->contents + off + 4);
6651 value = 1;
6652 }
70bccea4 6653 }
70bccea4
AM
6654 bfd_put_32 (output_bfd, value,
6655 htab->got->contents + off);
7619e7c7 6656 }
70bccea4
AM
6657
6658 off += 4;
6659 if (tls_ty & (TLS_LD | TLS_GD))
6660 off += 4;
7619e7c7 6661 }
70bccea4
AM
6662 while (tls_m != 0);
6663
6664 off = *offp;
6665 *offp = off | 1;
7619e7c7
AM
6666 }
6667
6668 if (off >= (bfd_vma) -2)
6669 abort ();
6670
70bccea4
AM
6671 if ((tls_type & TLS_TLS) != 0)
6672 {
6673 if (tls_type != (TLS_TLS | TLS_LD))
6674 {
6675 if ((tls_mask & TLS_LD) != 0
6676 && !(h == NULL
f5385ebf 6677 || !h->def_dynamic))
70bccea4
AM
6678 off += 8;
6679 if (tls_type != (TLS_TLS | TLS_GD))
6680 {
6681 if ((tls_mask & TLS_GD) != 0)
6682 off += 8;
6683 if (tls_type != (TLS_TLS | TLS_DTPREL))
6684 {
6685 if ((tls_mask & TLS_DTPREL) != 0)
6686 off += 4;
6687 }
6688 }
6689 }
6690 }
6691
e87d4038
AM
6692 relocation = (htab->got->output_section->vma
6693 + htab->got->output_offset
6694 + off
6695 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
6696
6697 /* Addends on got relocations don't make much sense.
6698 x+off@got is actually x@got+off, and since the got is
6699 generated by a hash table traversal, the value in the
6700 got at entry m+n bears little relation to the entry m. */
6701 if (addend != 0)
6702 (*_bfd_error_handler)
d003868e
AM
6703 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6704 input_bfd,
6705 input_section,
7619e7c7 6706 (long) rel->r_offset,
7b609f53 6707 howto->name,
7619e7c7
AM
6708 sym_name);
6709 }
70bccea4 6710 break;
7619e7c7 6711
252b5132 6712 /* Relocations that need no special processing. */
7619e7c7 6713 case R_PPC_LOCAL24PC:
252b5132
RH
6714 /* It makes no sense to point a local relocation
6715 at a symbol not in this object. */
7b609f53 6716 if (unresolved_reloc)
252b5132 6717 {
464e1740
ILT
6718 if (! (*info->callbacks->undefined_symbol) (info,
6719 h->root.root.string,
6720 input_bfd,
6721 input_section,
5cc7c785 6722 rel->r_offset,
b34976b6
AM
6723 TRUE))
6724 return FALSE;
252b5132
RH
6725 continue;
6726 }
6727 break;
6728
7619e7c7
AM
6729 case R_PPC_DTPREL16:
6730 case R_PPC_DTPREL16_LO:
6731 case R_PPC_DTPREL16_HI:
6732 case R_PPC_DTPREL16_HA:
e1918d23 6733 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
6734 break;
6735
70bccea4
AM
6736 /* Relocations that may need to be propagated if this is a shared
6737 object. */
7619e7c7
AM
6738 case R_PPC_TPREL16:
6739 case R_PPC_TPREL16_LO:
6740 case R_PPC_TPREL16_HI:
6741 case R_PPC_TPREL16_HA:
e1918d23 6742 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
6743 /* The TPREL16 relocs shouldn't really be used in shared
6744 libs as they will result in DT_TEXTREL being set, but
6745 support them anyway. */
6746 goto dodyn;
6747
6748 case R_PPC_TPREL32:
e1918d23 6749 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
6750 goto dodyn;
6751
6752 case R_PPC_DTPREL32:
e1918d23 6753 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
6754 goto dodyn;
6755
e515b051
AM
6756 case R_PPC_DTPMOD32:
6757 relocation = 1;
6758 addend = 0;
6759 goto dodyn;
6760
d7128ce4
AM
6761 case R_PPC_REL16:
6762 case R_PPC_REL16_LO:
6763 case R_PPC_REL16_HI:
6764 case R_PPC_REL16_HA:
6765 break;
6766
7619e7c7 6767 case R_PPC_REL32:
625af618
AM
6768 if (h == NULL || h == htab->elf.hgot)
6769 break;
6770 /* fall through */
6771
6772 case R_PPC_ADDR32:
6773 case R_PPC_ADDR16:
6774 case R_PPC_ADDR16_LO:
6775 case R_PPC_ADDR16_HI:
6776 case R_PPC_ADDR16_HA:
6777 case R_PPC_UADDR32:
6778 case R_PPC_UADDR16:
6779 goto dodyn;
6780
6781 case R_PPC_REL24:
7619e7c7
AM
6782 case R_PPC_REL14:
6783 case R_PPC_REL14_BRTAKEN:
6784 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
6785 /* If these relocations are not to a named symbol, they can be
6786 handled right here, no need to bother the dynamic linker. */
89200bf8 6787 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 6788 || h == htab->elf.hgot)
252b5132 6789 break;
70bccea4 6790 /* fall through */
252b5132 6791
7619e7c7 6792 case R_PPC_ADDR24:
7619e7c7
AM
6793 case R_PPC_ADDR14:
6794 case R_PPC_ADDR14_BRTAKEN:
6795 case R_PPC_ADDR14_BRNTAKEN:
625af618
AM
6796 if (h != NULL && !info->shared)
6797 break;
6798 /* fall through */
6799
7619e7c7 6800 dodyn:
3348747a
NS
6801 if ((input_section->flags & SEC_ALLOC) == 0
6802 || is_vxworks_tls)
c87b5a93 6803 break;
c87b5a93 6804
ee05f2fe 6805 if ((info->shared
89200bf8
AM
6806 && !(h != NULL
6807 && ((h->root.type == bfd_link_hash_undefined
6808 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6809 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6810 || (h->root.type == bfd_link_hash_undefweak
6811 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 6812 && (must_be_dyn_reloc (info, r_type)
f6c52c13 6813 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM
6814 || (ELIMINATE_COPY_RELOCS
6815 && !info->shared
ee05f2fe
AM
6816 && h != NULL
6817 && h->dynindx != -1
f5385ebf 6818 && !h->non_got_ref
f5385ebf 6819 && !h->def_regular))
252b5132 6820 {
0bb2d96a 6821 int skip;
252b5132
RH
6822
6823#ifdef DEBUG
55fd94b0
AM
6824 fprintf (stderr, "ppc_elf_relocate_section needs to "
6825 "create relocation for %s\n",
70bccea4
AM
6826 (h && h->root.root.string
6827 ? h->root.root.string : "<unknown>"));
252b5132
RH
6828#endif
6829
6830 /* When generating a shared object, these relocations
70bccea4
AM
6831 are copied into the output file to be resolved at run
6832 time. */
252b5132
RH
6833 if (sreloc == NULL)
6834 {
6835 const char *name;
6836
6837 name = (bfd_elf_string_from_elf_section
6838 (input_bfd,
6839 elf_elfheader (input_bfd)->e_shstrndx,
6840 elf_section_data (input_section)->rel_hdr.sh_name));
6841 if (name == NULL)
b34976b6 6842 return FALSE;
252b5132 6843
0112cd26 6844 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
252b5132
RH
6845 && strcmp (bfd_get_section_name (input_bfd,
6846 input_section),
6847 name + 5) == 0);
6848
7619e7c7 6849 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
252b5132
RH
6850 BFD_ASSERT (sreloc != NULL);
6851 }
6852
0bb2d96a 6853 skip = 0;
c629eae0
JJ
6854 outrel.r_offset =
6855 _bfd_elf_section_offset (output_bfd, info, input_section,
6856 rel->r_offset);
0bb2d96a
JJ
6857 if (outrel.r_offset == (bfd_vma) -1
6858 || outrel.r_offset == (bfd_vma) -2)
6859 skip = (int) outrel.r_offset;
252b5132
RH
6860 outrel.r_offset += (input_section->output_section->vma
6861 + input_section->output_offset);
6862
6863 if (skip)
6864 memset (&outrel, 0, sizeof outrel);
89200bf8
AM
6865 else if ((h != NULL
6866 && (h->root.type == bfd_link_hash_undefined
6867 || h->root.type == bfd_link_hash_undefweak))
6868 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 6869 {
7619e7c7 6870 unresolved_reloc = FALSE;
252b5132
RH
6871 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6872 outrel.r_addend = rel->r_addend;
6873 }
6874 else
6875 {
47388f4c
AM
6876 outrel.r_addend = relocation + rel->r_addend;
6877
252b5132 6878 if (r_type == R_PPC_ADDR32)
47388f4c 6879 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
6880 else
6881 {
89200bf8 6882 long indx = 0;
252b5132 6883
1d483afe 6884 if (r_symndx == 0 || bfd_is_abs_section (sec))
89200bf8 6885 ;
252b5132
RH
6886 else if (sec == NULL || sec->owner == NULL)
6887 {
6888 bfd_set_error (bfd_error_bad_value);
89200bf8 6889 ret = FALSE;
252b5132
RH
6890 }
6891 else
6892 {
6893 asection *osec;
6894
47388f4c
AM
6895 /* We are turning this relocation into one
6896 against a section symbol. It would be
6897 proper to subtract the symbol's value,
6898 osec->vma, from the emitted reloc addend,
6899 but ld.so expects buggy relocs. */
252b5132
RH
6900 osec = sec->output_section;
6901 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
6902 if (indx == 0)
6903 {
6904 osec = htab->elf.text_index_section;
6905 indx = elf_section_data (osec)->dynindx;
6906 }
6907 BFD_ASSERT (indx != 0);
252b5132 6908#ifdef DEBUG
74541ad4 6909 if (indx == 0)
e460dd0d 6910 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
6911 indx, osec->name, osec->flags,
6912 h->root.root.string);
252b5132
RH
6913#endif
6914 }
6915
6916 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH
6917 }
6918 }
6919
947216bf
AM
6920 loc = sreloc->contents;
6921 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6922 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 6923
2243deae 6924 if (skip == -1)
252b5132 6925 continue;
2243deae
L
6926
6927 /* This reloc will be computed at runtime. We clear the memory
6928 so that it contains predictable value. */
6929 if (! skip
6930 && ((input_section->flags & SEC_ALLOC) != 0
6931 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6932 {
6933 relocation = howto->pc_relative ? outrel.r_offset : 0;
6934 addend = 0;
6935 break;
6936 }
252b5132 6937 }
252b5132
RH
6938 break;
6939
b4a38de6
AM
6940 case R_PPC_RELAX32PC_PLT:
6941 case R_PPC_RELAX32_PLT:
a6aa5195
AM
6942 {
6943 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6944
4a3dc543 6945 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
6946 relocation = (htab->glink->output_section->vma
6947 + htab->glink->output_offset
6948 + ent->glink_offset);
6949 else
6950 relocation = (htab->plt->output_section->vma
6951 + htab->plt->output_offset
6952 + ent->plt.offset);
a6aa5195 6953 }
b4a38de6
AM
6954 if (r_type == R_PPC_RELAX32_PLT)
6955 goto relax32;
6956 /* Fall thru */
6957
f31a141e
AM
6958 case R_PPC_RELAX32PC:
6959 relocation -= (input_section->output_section->vma
6960 + input_section->output_offset
6961 + rel->r_offset - 4);
6962 /* Fall thru */
b4a38de6 6963
deaaf2f3 6964 case R_PPC_RELAX32:
b4a38de6 6965 relax32:
9abc968f
AM
6966 {
6967 unsigned long t0;
6968 unsigned long t1;
6969
6970 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6971 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6972
6973 /* We're clearing the bits for R_PPC_ADDR16_HA
6974 and R_PPC_ADDR16_LO here. */
6975 t0 &= ~0xffff;
6976 t1 &= ~0xffff;
6977
6978 /* t0 is HA, t1 is LO */
6979 relocation += addend;
6980 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6981 t1 |= relocation & 0xffff;
6982
6983 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6984 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6985 }
8517fae7 6986 continue;
deaaf2f3 6987
70bccea4 6988 /* Indirect .sdata relocation. */
7619e7c7 6989 case R_PPC_EMB_SDAI16:
c9a2f333 6990 BFD_ASSERT (htab->sdata[0].section != NULL);
7619e7c7 6991 relocation
76750a2f
AM
6992 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6993 h, relocation, rel);
252b5132
RH
6994 break;
6995
70bccea4 6996 /* Indirect .sdata2 relocation. */
7619e7c7 6997 case R_PPC_EMB_SDA2I16:
c9a2f333 6998 BFD_ASSERT (htab->sdata[1].section != NULL);
7619e7c7 6999 relocation
76750a2f
AM
7000 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7001 h, relocation, rel);
252b5132
RH
7002 break;
7003
70bccea4
AM
7004 /* Handle the TOC16 reloc. We want to use the offset within the .got
7005 section, not the actual VMA. This is appropriate when generating
7006 an embedded ELF object, for which the .got section acts like the
7007 AIX .toc section. */
7619e7c7 7008 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
7009 if (sec == NULL || sec->output_section == NULL)
7010 {
7011 unresolved_reloc = TRUE;
7012 break;
7013 }
7014 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
f12123c0 7015 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
252b5132 7016
3b4f3a11 7017 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
7018 break;
7019
7619e7c7 7020 case R_PPC_PLTREL24:
252b5132 7021 /* Relocation is to the entry for this symbol in the
70bccea4 7022 procedure linkage table. */
a6aa5195
AM
7023 {
7024 struct plt_entry *ent = find_plt_ent (h, got2, addend);
252b5132 7025
a6aa5195
AM
7026 addend = 0;
7027 if (ent == NULL
7028 || htab->plt == NULL)
7029 {
7030 /* We didn't make a PLT entry for this symbol. This
7031 happens when statically linking PIC code, or when
7032 using -Bsymbolic. */
7033 break;
7034 }
252b5132 7035
a6aa5195 7036 unresolved_reloc = FALSE;
4a3dc543 7037 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
7038 relocation = (htab->glink->output_section->vma
7039 + htab->glink->output_offset
7040 + ent->glink_offset);
7041 else
7042 relocation = (htab->plt->output_section->vma
7043 + htab->plt->output_offset
7044 + ent->plt.offset);
7045 }
8da6118f 7046 break;
252b5132 7047
70bccea4 7048 /* Relocate against _SDA_BASE_. */
7619e7c7 7049 case R_PPC_SDAREL16:
252b5132
RH
7050 {
7051 const char *name;
7052
3b4f3a11
AM
7053 if (sec == NULL || sec->output_section == NULL)
7054 {
7055 unresolved_reloc = TRUE;
7056 break;
7057 }
7058
252b5132 7059 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7060 if (! ((CONST_STRNEQ (name, ".sdata")
5f819128 7061 && (name[6] == 0 || name[6] == '.'))
0112cd26 7062 || (CONST_STRNEQ (name, ".sbss")
5f819128 7063 && (name[5] == 0 || name[5] == '.'))))
252b5132 7064 {
55fd94b0 7065 (*_bfd_error_handler)
d003868e 7066 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7067 "in the wrong output section (%s)"),
d003868e 7068 input_bfd,
55fd94b0
AM
7069 sym_name,
7070 howto->name,
7071 name);
252b5132 7072 }
e87d4038 7073 addend -= SYM_VAL (htab->sdata[0].sym);
252b5132
RH
7074 }
7075 break;
7076
70bccea4 7077 /* Relocate against _SDA2_BASE_. */
7619e7c7 7078 case R_PPC_EMB_SDA2REL:
252b5132
RH
7079 {
7080 const char *name;
7081
3b4f3a11
AM
7082 if (sec == NULL || sec->output_section == NULL)
7083 {
7084 unresolved_reloc = TRUE;
7085 break;
7086 }
7087
252b5132 7088 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26
NC
7089 if (! (CONST_STRNEQ (name, ".sdata2")
7090 || CONST_STRNEQ (name, ".sbss2")))
252b5132 7091 {
55fd94b0 7092 (*_bfd_error_handler)
d003868e 7093 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7094 "in the wrong output section (%s)"),
d003868e 7095 input_bfd,
55fd94b0
AM
7096 sym_name,
7097 howto->name,
7098 name);
c3668558 7099
252b5132 7100 bfd_set_error (bfd_error_bad_value);
b34976b6 7101 ret = FALSE;
252b5132
RH
7102 continue;
7103 }
e87d4038 7104 addend -= SYM_VAL (htab->sdata[1].sym);
252b5132
RH
7105 }
7106 break;
7107
70bccea4 7108 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7
AM
7109 case R_PPC_EMB_SDA21:
7110 case R_PPC_EMB_RELSDA:
252b5132
RH
7111 {
7112 const char *name;
7113 int reg;
7114
3b4f3a11
AM
7115 if (sec == NULL || sec->output_section == NULL)
7116 {
7117 unresolved_reloc = TRUE;
7118 break;
7119 }
7120
252b5132 7121 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7122 if (((CONST_STRNEQ (name, ".sdata")
5f819128 7123 && (name[6] == 0 || name[6] == '.'))
0112cd26 7124 || (CONST_STRNEQ (name, ".sbss")
5f819128 7125 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH
7126 {
7127 reg = 13;
e87d4038 7128 addend -= SYM_VAL (htab->sdata[0].sym);
252b5132 7129 }
0112cd26
NC
7130 else if (CONST_STRNEQ (name, ".sdata2")
7131 || CONST_STRNEQ (name, ".sbss2"))
252b5132
RH
7132 {
7133 reg = 2;
e87d4038 7134 addend -= SYM_VAL (htab->sdata[1].sym);
252b5132 7135 }
8da6118f
KH
7136 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7137 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
7138 {
7139 reg = 0;
7140 }
252b5132
RH
7141 else
7142 {
55fd94b0 7143 (*_bfd_error_handler)
d003868e 7144 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7145 "in the wrong output section (%s)"),
d003868e 7146 input_bfd,
55fd94b0
AM
7147 sym_name,
7148 howto->name,
7149 name);
252b5132
RH
7150
7151 bfd_set_error (bfd_error_bad_value);
b34976b6 7152 ret = FALSE;
252b5132
RH
7153 continue;
7154 }
7155
7156 if (r_type == R_PPC_EMB_SDA21)
7157 { /* fill in register field */
7619e7c7 7158 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 7159 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 7160 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
7161 }
7162 }
7163 break;
7164
70bccea4 7165 /* Relocate against the beginning of the section. */
7619e7c7
AM
7166 case R_PPC_SECTOFF:
7167 case R_PPC_SECTOFF_LO:
7168 case R_PPC_SECTOFF_HI:
7169 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
7170 if (sec == NULL || sec->output_section == NULL)
7171 {
7172 unresolved_reloc = TRUE;
7173 break;
7174 }
252b5132 7175 addend -= sec->output_section->vma;
252b5132
RH
7176 break;
7177
70bccea4 7178 /* Negative relocations. */
7619e7c7
AM
7179 case R_PPC_EMB_NADDR32:
7180 case R_PPC_EMB_NADDR16:
7181 case R_PPC_EMB_NADDR16_LO:
7182 case R_PPC_EMB_NADDR16_HI:
7183 case R_PPC_EMB_NADDR16_HA:
8da6118f 7184 addend -= 2 * relocation;
252b5132
RH
7185 break;
7186
7619e7c7
AM
7187 case R_PPC_COPY:
7188 case R_PPC_GLOB_DAT:
7189 case R_PPC_JMP_SLOT:
7190 case R_PPC_RELATIVE:
7191 case R_PPC_PLT32:
7192 case R_PPC_PLTREL32:
7193 case R_PPC_PLT16_LO:
7194 case R_PPC_PLT16_HI:
7195 case R_PPC_PLT16_HA:
7196 case R_PPC_ADDR30:
7197 case R_PPC_EMB_RELSEC16:
7198 case R_PPC_EMB_RELST_LO:
7199 case R_PPC_EMB_RELST_HI:
7200 case R_PPC_EMB_RELST_HA:
7201 case R_PPC_EMB_BIT_FLD:
7202 (*_bfd_error_handler)
d003868e
AM
7203 (_("%B: relocation %s is not yet supported for symbol %s."),
7204 input_bfd,
7619e7c7
AM
7205 howto->name,
7206 sym_name);
252b5132
RH
7207
7208 bfd_set_error (bfd_error_invalid_operation);
b34976b6 7209 ret = FALSE;
252b5132 7210 continue;
7619e7c7 7211 }
252b5132 7212
7619e7c7
AM
7213 /* Do any further special processing. */
7214 switch (r_type)
7215 {
7216 default:
7217 break;
7218
7219 case R_PPC_ADDR16_HA:
d7128ce4 7220 case R_PPC_REL16_HA:
7619e7c7
AM
7221 case R_PPC_SECTOFF_HA:
7222 case R_PPC_TPREL16_HA:
7223 case R_PPC_DTPREL16_HA:
7619e7c7
AM
7224 case R_PPC_EMB_NADDR16_HA:
7225 case R_PPC_EMB_RELST_HA:
7226 /* It's just possible that this symbol is a weak symbol
7b609f53 7227 that's not actually defined anywhere. In that case,
7619e7c7
AM
7228 'sec' would be NULL, and we should leave the symbol
7229 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
7230 if (sec == NULL)
7231 break;
7232 /* Fall thru */
7233
7234 case R_PPC_PLT16_HA:
7235 case R_PPC_GOT16_HA:
7236 case R_PPC_GOT_TLSGD16_HA:
7237 case R_PPC_GOT_TLSLD16_HA:
7238 case R_PPC_GOT_TPREL16_HA:
7239 case R_PPC_GOT_DTPREL16_HA:
7240 /* Add 0x10000 if sign bit in 0:15 is set.
7241 Bits 0:15 are not used. */
7242 addend += 0x8000;
7619e7c7 7243 break;
252b5132
RH
7244 }
7245
252b5132 7246#ifdef DEBUG
55fd94b0
AM
7247 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7248 "offset = %ld, addend = %ld\n",
252b5132 7249 howto->name,
8da6118f 7250 (int) r_type,
252b5132
RH
7251 sym_name,
7252 r_symndx,
7619e7c7 7253 (long) rel->r_offset,
8da6118f 7254 (long) addend);
252b5132
RH
7255#endif
7256
7619e7c7
AM
7257 if (unresolved_reloc
7258 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 7259 && h->def_dynamic))
7619e7c7
AM
7260 {
7261 (*_bfd_error_handler)
d003868e
AM
7262 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7263 input_bfd,
7264 input_section,
7619e7c7 7265 (long) rel->r_offset,
7b609f53 7266 howto->name,
7619e7c7
AM
7267 sym_name);
7268 ret = FALSE;
7269 }
7270
252b5132
RH
7271 r = _bfd_final_link_relocate (howto,
7272 input_bfd,
7273 input_section,
7274 contents,
7619e7c7 7275 rel->r_offset,
252b5132
RH
7276 relocation,
7277 addend);
7278
7619e7c7 7279 if (r != bfd_reloc_ok)
252b5132 7280 {
7619e7c7 7281 if (r == bfd_reloc_overflow)
252b5132 7282 {
7619e7c7
AM
7283 if (warned)
7284 continue;
7285 if (h != NULL
7286 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH
7287 && howto->pc_relative)
7288 {
7289 /* Assume this is a call protected by other code that
7290 detect the symbol is undefined. If this is the case,
7291 we can safely ignore the overflow. If not, the
7292 program is hosed anyway, and a little warning isn't
7293 going to help. */
252b5132 7294
dc1bc0c9
RH
7295 continue;
7296 }
252b5132 7297
7619e7c7 7298 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 7299 (h ? &h->root : NULL),
7619e7c7
AM
7300 sym_name,
7301 howto->name,
7302 rel->r_addend,
7303 input_bfd,
7304 input_section,
7305 rel->r_offset))
7306 return FALSE;
dc1bc0c9
RH
7307 }
7308 else
7309 {
7619e7c7 7310 (*_bfd_error_handler)
d003868e
AM
7311 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7312 input_bfd, input_section,
7b609f53 7313 (long) rel->r_offset, howto->name, sym_name, (int) r);
7619e7c7 7314 ret = FALSE;
252b5132
RH
7315 }
7316 }
7317 }
7318
252b5132
RH
7319#ifdef DEBUG
7320 fprintf (stderr, "\n");
7321#endif
7322
7323 return ret;
7324}
252b5132 7325\f
a6aa5195
AM
7326#define PPC_LO(v) ((v) & 0xffff)
7327#define PPC_HI(v) (((v) >> 16) & 0xffff)
7328#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7329
25dbc73a
AM
7330/* Finish up dynamic symbol handling. We set the contents of various
7331 dynamic sections here. */
c5fccbec 7332
b34976b6 7333static bfd_boolean
25dbc73a
AM
7334ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7335 struct bfd_link_info *info,
7336 struct elf_link_hash_entry *h,
7337 Elf_Internal_Sym *sym)
e1a9cb8e 7338{
25dbc73a 7339 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
7340 struct plt_entry *ent;
7341 bfd_boolean doneone;
e1a9cb8e 7342
25dbc73a
AM
7343#ifdef DEBUG
7344 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7345 h->root.root.string);
7346#endif
e1a9cb8e 7347
25dbc73a
AM
7348 htab = ppc_elf_hash_table (info);
7349 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 7350
a6aa5195
AM
7351 doneone = FALSE;
7352 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7353 if (ent->plt.offset != (bfd_vma) -1)
7354 {
7355 if (!doneone)
7356 {
7357 Elf_Internal_Rela rela;
7358 bfd_byte *loc;
7359 bfd_vma reloc_index;
e1a9cb8e 7360
4a3dc543 7361 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
7362 reloc_index = ent->plt.offset / 4;
7363 else
7364 {
7365 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7366 / htab->plt_slot_size);
7367 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 7368 && htab->plt_type == PLT_OLD)
9d8504b1
PB
7369 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
7370 }
7371
a6aa5195
AM
7372 /* This symbol has an entry in the procedure linkage table.
7373 Set it up. */
4a3dc543 7374 if (htab->plt_type == PLT_VXWORKS)
a6aa5195 7375 {
9d8504b1
PB
7376 bfd_vma got_offset;
7377 const bfd_vma *plt_entry;
7378
7379 /* The first three entries in .got.plt are reserved. */
7380 got_offset = (reloc_index + 3) * 4;
7381
7382 /* Use the right PLT. */
7383 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
7384 : ppc_elf_vxworks_plt_entry;
7385
7386 /* Fill in the .plt on VxWorks. */
7387 if (info->shared)
7388 {
9d8504b1 7389 bfd_put_32 (output_bfd,
e87d4038 7390 plt_entry[0] | PPC_HA (got_offset),
9d8504b1
PB
7391 htab->plt->contents + ent->plt.offset + 0);
7392 bfd_put_32 (output_bfd,
e87d4038 7393 plt_entry[1] | PPC_LO (got_offset),
9d8504b1
PB
7394 htab->plt->contents + ent->plt.offset + 4);
7395 }
7396 else
7397 {
e87d4038 7398 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
7399
7400 bfd_put_32 (output_bfd,
e87d4038 7401 plt_entry[0] | PPC_HA (got_loc),
9d8504b1
PB
7402 htab->plt->contents + ent->plt.offset + 0);
7403 bfd_put_32 (output_bfd,
e87d4038 7404 plt_entry[1] | PPC_LO (got_loc),
9d8504b1
PB
7405 htab->plt->contents + ent->plt.offset + 4);
7406 }
7407
7408 bfd_put_32 (output_bfd, plt_entry[2],
7409 htab->plt->contents + ent->plt.offset + 8);
7410 bfd_put_32 (output_bfd, plt_entry[3],
7411 htab->plt->contents + ent->plt.offset + 12);
7412
7413 /* This instruction is an immediate load. The value loaded is
7414 the byte offset of the R_PPC_JMP_SLOT relocation from the
7415 start of the .rela.plt section. The value is stored in the
7416 low-order 16 bits of the load instruction. */
7417 /* NOTE: It appears that this is now an index rather than a
7418 prescaled offset. */
7419 bfd_put_32 (output_bfd,
7420 plt_entry[4] | reloc_index,
7421 htab->plt->contents + ent->plt.offset + 16);
7422 /* This instruction is a PC-relative branch whose target is
7423 the start of the PLT section. The address of this branch
7424 instruction is 20 bytes beyond the start of this PLT entry.
7425 The address is encoded in bits 6-29, inclusive. The value
7426 stored is right-shifted by two bits, permitting a 26-bit
7427 offset. */
7428 bfd_put_32 (output_bfd,
7429 (plt_entry[5]
7430 | (-(ent->plt.offset + 20) & 0x03fffffc)),
7431 htab->plt->contents + ent->plt.offset + 20);
7432 bfd_put_32 (output_bfd, plt_entry[6],
7433 htab->plt->contents + ent->plt.offset + 24);
7434 bfd_put_32 (output_bfd, plt_entry[7],
7435 htab->plt->contents + ent->plt.offset + 28);
7436
7437 /* Fill in the GOT entry corresponding to this PLT slot with
7438 the address immediately after the the "bctr" instruction
7439 in this PLT entry. */
7440 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
7441 + htab->plt->output_offset
7442 + ent->plt.offset + 16),
7443 htab->sgotplt->contents + got_offset);
7444
7445 if (!info->shared)
7446 {
7447 /* Fill in a couple of entries in .rela.plt.unloaded. */
7448 loc = htab->srelplt2->contents
7449 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
7450 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
7451 * sizeof (Elf32_External_Rela));
7452
7453 /* Provide the @ha relocation for the first instruction. */
7454 rela.r_offset = (htab->plt->output_section->vma
7455 + htab->plt->output_offset
7456 + ent->plt.offset + 2);
636ce3f5 7457 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
7458 R_PPC_ADDR16_HA);
7459 rela.r_addend = got_offset;
7460 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7461 loc += sizeof (Elf32_External_Rela);
7462
7463 /* Provide the @l relocation for the second instruction. */
7464 rela.r_offset = (htab->plt->output_section->vma
7465 + htab->plt->output_offset
7466 + ent->plt.offset + 6);
636ce3f5 7467 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
7468 R_PPC_ADDR16_LO);
7469 rela.r_addend = got_offset;
7470 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7471 loc += sizeof (Elf32_External_Rela);
7472
7473 /* Provide a relocation for the GOT entry corresponding to this
7474 PLT slot. Point it at the middle of the .plt entry. */
7475 rela.r_offset = (htab->sgotplt->output_section->vma
7476 + htab->sgotplt->output_offset
7477 + got_offset);
7325306f 7478 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
7479 R_PPC_ADDR32);
7480 rela.r_addend = ent->plt.offset + 16;
7481 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7482 }
7483
7484 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7485 In particular, the offset for the relocation is not the
7486 address of the PLT entry for this function, as specified
7487 by the ABI. Instead, the offset is set to the address of
7488 the GOT slot for this function. See EABI 4.4.4.1. */
7489 rela.r_offset = (htab->sgotplt->output_section->vma
7490 + htab->sgotplt->output_offset
7491 + got_offset);
7492
a6aa5195
AM
7493 }
7494 else
7495 {
9d8504b1
PB
7496 rela.r_offset = (htab->plt->output_section->vma
7497 + htab->plt->output_offset
7498 + ent->plt.offset);
4a3dc543 7499 if (htab->plt_type == PLT_OLD)
9d8504b1
PB
7500 {
7501 /* We don't need to fill in the .plt. The ppc dynamic
7502 linker will fill it in. */
7503 }
7504 else
7505 {
7506 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
7507 + htab->glink->output_section->vma
7508 + htab->glink->output_offset);
7509 bfd_put_32 (output_bfd, val,
7510 htab->plt->contents + ent->plt.offset);
7511 }
a6aa5195 7512 }
e1a9cb8e 7513
a6aa5195 7514 /* Fill in the entry in the .rela.plt section. */
a6aa5195
AM
7515 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
7516 rela.r_addend = 0;
e1a9cb8e 7517
a6aa5195
AM
7518 loc = (htab->relplt->contents
7519 + reloc_index * sizeof (Elf32_External_Rela));
7520 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 7521
a6aa5195
AM
7522 if (!h->def_regular)
7523 {
0eb4a168
AM
7524 /* Mark the symbol as undefined, rather than as
7525 defined in the .plt section. Leave the value if
7526 there were any relocations where pointer equality
7527 matters (this is a clue for the dynamic linker, to
7528 make function pointer comparisons work between an
7529 application and shared library), otherwise set it
7530 to zero. */
a6aa5195 7531 sym->st_shndx = SHN_UNDEF;
0eb4a168 7532 if (!h->pointer_equality_needed)
a6aa5195 7533 sym->st_value = 0;
0eb4a168
AM
7534 else if (!h->ref_regular_nonweak)
7535 {
625af618
AM
7536 /* This breaks function pointer comparisons, but
7537 that is better than breaking tests for a NULL
0eb4a168 7538 function pointer. */
0eb4a168
AM
7539 sym->st_value = 0;
7540 }
a6aa5195
AM
7541 }
7542 doneone = TRUE;
7543 }
e1a9cb8e 7544
4a3dc543 7545 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
7546 {
7547 bfd_vma plt;
7548 unsigned char *p;
e1a9cb8e 7549
a6aa5195
AM
7550 plt = (ent->plt.offset
7551 + htab->plt->output_section->vma
7552 + htab->plt->output_offset);
7553 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
e1a9cb8e 7554
a6aa5195
AM
7555 if (info->shared || info->pie)
7556 {
7557 bfd_vma got = 0;
7558
7559 if (ent->addend >= 32768)
7560 got = (ent->addend
7561 + ent->sec->output_section->vma
7562 + ent->sec->output_offset);
7563 else if (htab->elf.hgot != NULL)
e87d4038 7564 got = SYM_VAL (htab->elf.hgot);
a6aa5195
AM
7565
7566 plt -= got;
7567
7568 if (plt + 0x8000 < 0x10000)
7569 {
7570 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7571 p += 4;
7572 bfd_put_32 (output_bfd, MTCTR_11, p);
7573 p += 4;
7574 bfd_put_32 (output_bfd, BCTR, p);
7575 p += 4;
7576 bfd_put_32 (output_bfd, NOP, p);
7577 p += 4;
7578 }
7579 else
7580 {
7581 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7582 p += 4;
7583 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7584 p += 4;
7585 bfd_put_32 (output_bfd, MTCTR_11, p);
7586 p += 4;
7587 bfd_put_32 (output_bfd, BCTR, p);
7588 p += 4;
7589 }
7590 }
7591 else
7592 {
7593 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7594 p += 4;
7595 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7596 p += 4;
7597 bfd_put_32 (output_bfd, MTCTR_11, p);
7598 p += 4;
7599 bfd_put_32 (output_bfd, BCTR, p);
7600 p += 4;
28e99bb6
AM
7601
7602 /* We only need one non-PIC glink stub. */
7603 break;
a6aa5195
AM
7604 }
7605 }
7606 else
7607 break;
7608 }
e1a9cb8e 7609
25dbc73a
AM
7610 if (h->needs_copy)
7611 {
7612 asection *s;
7613 Elf_Internal_Rela rela;
7614 bfd_byte *loc;
e1a9cb8e 7615
25dbc73a 7616 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 7617
25dbc73a
AM
7618#ifdef DEBUG
7619 fprintf (stderr, ", copy");
7620#endif
e1a9cb8e 7621
25dbc73a 7622 BFD_ASSERT (h->dynindx != -1);
86bbe32f 7623
4dc4a9a5 7624 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
7625 s = htab->relsbss;
7626 else
7627 s = htab->relbss;
7628 BFD_ASSERT (s != NULL);
e1a9cb8e 7629
e87d4038 7630 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
7631 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7632 rela.r_addend = 0;
7633 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7634 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7635 }
e1a9cb8e 7636
25dbc73a
AM
7637#ifdef DEBUG
7638 fprintf (stderr, "\n");
7639#endif
e1a9cb8e 7640
25dbc73a 7641 /* Mark some specially defined symbols as absolute. */
9d8504b1
PB
7642 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7643 || (!htab->is_vxworks
7644 && (h == htab->elf.hgot
7645 || strcmp (h->root.root.string,
7646 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
25dbc73a 7647 sym->st_shndx = SHN_ABS;
e1a9cb8e 7648
25dbc73a
AM
7649 return TRUE;
7650}
7651\f
7652static enum elf_reloc_type_class
7653ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 7654{
25dbc73a
AM
7655 switch (ELF32_R_TYPE (rela->r_info))
7656 {
7657 case R_PPC_RELATIVE:
7658 return reloc_class_relative;
7659 case R_PPC_REL24:
7660 case R_PPC_ADDR24:
7661 case R_PPC_JMP_SLOT:
7662 return reloc_class_plt;
7663 case R_PPC_COPY:
7664 return reloc_class_copy;
7665 default:
7666 return reloc_class_normal;
7667 }
e1a9cb8e 7668}
25dbc73a
AM
7669\f
7670/* Finish up the dynamic sections. */
e1a9cb8e 7671
25dbc73a
AM
7672static bfd_boolean
7673ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7674 struct bfd_link_info *info)
e1a9cb8e 7675{
25dbc73a 7676 asection *sdyn;
9d8504b1 7677 asection *splt;
25dbc73a 7678 struct ppc_elf_link_hash_table *htab;
1fe44d79 7679 bfd_vma got;
e87d4038
AM
7680 bfd *dynobj;
7681 bfd_boolean ret = TRUE;
e1a9cb8e 7682
25dbc73a
AM
7683#ifdef DEBUG
7684 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7685#endif
6b0817e5 7686
25dbc73a 7687 htab = ppc_elf_hash_table (info);
9d8504b1
PB
7688 dynobj = elf_hash_table (info)->dynobj;
7689 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7690 if (htab->is_vxworks)
7691 splt = bfd_get_section_by_name (dynobj, ".plt");
7692 else
7693 splt = NULL;
e1a9cb8e 7694
1fe44d79
AM
7695 got = 0;
7696 if (htab->elf.hgot != NULL)
e87d4038 7697 got = SYM_VAL (htab->elf.hgot);
1fe44d79 7698
25dbc73a 7699 if (htab->elf.dynamic_sections_created)
e1a9cb8e 7700 {
25dbc73a 7701 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 7702
25dbc73a 7703 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 7704
25dbc73a
AM
7705 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7706 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7707 for (; dyncon < dynconend; dyncon++)
7708 {
7709 Elf_Internal_Dyn dyn;
7710 asection *s;
e1a9cb8e 7711
9d8504b1 7712 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 7713
25dbc73a
AM
7714 switch (dyn.d_tag)
7715 {
7716 case DT_PLTGOT:
9d8504b1
PB
7717 if (htab->is_vxworks)
7718 s = htab->sgotplt;
7719 else
7720 s = htab->plt;
25dbc73a
AM
7721 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7722 break;
86bbe32f 7723
25dbc73a
AM
7724 case DT_PLTRELSZ:
7725 dyn.d_un.d_val = htab->relplt->size;
7726 break;
e1a9cb8e 7727
25dbc73a
AM
7728 case DT_JMPREL:
7729 s = htab->relplt;
7730 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7731 break;
2f89ff8d 7732
1fe44d79
AM
7733 case DT_PPC_GOT:
7734 dyn.d_un.d_ptr = got;
d7128ce4
AM
7735 break;
7736
9d8504b1
PB
7737 case DT_RELASZ:
7738 if (htab->is_vxworks)
7739 {
7740 if (htab->relplt)
7741 dyn.d_un.d_ptr -= htab->relplt->size;
7742 break;
7743 }
7744 continue;
7745
25dbc73a 7746 default:
7a2b07ff
NS
7747 if (htab->is_vxworks
7748 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7749 break;
25dbc73a
AM
7750 continue;
7751 }
4c45e5c9 7752
25dbc73a
AM
7753 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7754 }
7755 }
4c45e5c9 7756
3b36f7e6 7757 if (htab->got != NULL)
25dbc73a 7758 {
e79f5955
AM
7759 if (htab->elf.hgot->root.u.def.section == htab->got
7760 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
e87d4038 7761 {
e79f5955 7762 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 7763
e87d4038
AM
7764 p += htab->elf.hgot->root.u.def.value;
7765 if (htab->plt_type == PLT_OLD)
e79f5955
AM
7766 {
7767 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
7768 so that a function can easily find the address of
7769 _GLOBAL_OFFSET_TABLE_. */
7770 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
7771 < htab->elf.hgot->root.u.def.section->size);
7772 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
7773 }
3b36f7e6 7774
e87d4038 7775 if (sdyn != NULL)
e79f5955
AM
7776 {
7777 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
7778 BFD_ASSERT (htab->elf.hgot->root.u.def.value
7779 < htab->elf.hgot->root.u.def.section->size);
7780 bfd_put_32 (output_bfd, val, p);
7781 }
e87d4038
AM
7782 }
7783 else
7784 {
7785 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
7786 htab->elf.hgot->root.root.string,
e79f5955
AM
7787 (htab->sgotplt != NULL
7788 ? htab->sgotplt->name : htab->got->name));
e87d4038
AM
7789 bfd_set_error (bfd_error_bad_value);
7790 ret = FALSE;
7791 }
25dbc73a
AM
7792
7793 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7794 }
7795
9d8504b1
PB
7796 /* Fill in the first entry in the VxWorks procedure linkage table. */
7797 if (splt && splt->size > 0)
7798 {
7799 /* Use the right PLT. */
7800 static const bfd_vma *plt_entry = NULL;
7801 plt_entry = info->shared ?
7802 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7803
7804 if (!info->shared)
7805 {
e87d4038 7806 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 7807
e87d4038 7808 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 7809 splt->contents + 0);
e87d4038 7810 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
7811 splt->contents + 4);
7812 }
7813 else
7814 {
7815 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7816 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7817 }
7818 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7819 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7820 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7821 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7822 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7823 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7824
7825 if (! info->shared)
7826 {
7827 Elf_Internal_Rela rela;
7828 bfd_byte *loc;
7829
7830 loc = htab->srelplt2->contents;
7831
7832 /* Output the @ha relocation for the first instruction. */
7833 rela.r_offset = (htab->plt->output_section->vma
7834 + htab->plt->output_offset
7835 + 2);
636ce3f5 7836 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
7837 rela.r_addend = 0;
7838 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7839 loc += sizeof (Elf32_External_Rela);
7840
7841 /* Output the @l relocation for the second instruction. */
7842 rela.r_offset = (htab->plt->output_section->vma
7843 + htab->plt->output_offset
7844 + 6);
636ce3f5 7845 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
7846 rela.r_addend = 0;
7847 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7848 loc += sizeof (Elf32_External_Rela);
7849
7850 /* Fix up the remaining relocations. They may have the wrong
7851 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7852 in which symbols were output. */
7853 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7854 {
7855 Elf_Internal_Rela rel;
7856
7857 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 7858 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
7859 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7860 loc += sizeof (Elf32_External_Rela);
7861
7862 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 7863 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
7864 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7865 loc += sizeof (Elf32_External_Rela);
7866
7867 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 7868 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
7869 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7870 loc += sizeof (Elf32_External_Rela);
7871 }
7872 }
7873 }
7874
d7128ce4
AM
7875 if (htab->glink != NULL && htab->glink->contents != NULL)
7876 {
7877 unsigned char *p;
7878 unsigned char *endp;
a6aa5195 7879 bfd_vma res0;
d7128ce4 7880 unsigned int i;
a6aa5195
AM
7881
7882 /*
7883 * PIC glink code is the following:
7884 *
7885 * # ith PLT code stub.
7886 * addis 11,30,(plt+(i-1)*4-got)@ha
7887 * lwz 11,(plt+(i-1)*4-got)@l(11)
7888 * mtctr 11
7889 * bctr
7890 *
7891 * # A table of branches, one for each plt entry.
176a0d42 7892 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
7893 * # addresses, so (r11 - res_0) gives the plt index * 4.
7894 * res_0: b PLTresolve
7895 * res_1: b PLTresolve
7896 * .
7897 * # Some number of entries towards the end can be nops
7898 * res_n_m3: nop
7899 * res_n_m2: nop
7900 * res_n_m1:
7901 *
7902 * PLTresolve:
7903 * addis 11,11,(1f-res_0)@ha
7904 * mflr 0
7905 * bcl 20,31,1f
7906 * 1: addi 11,11,(1b-res_0)@l
7907 * mflr 12
7908 * mtlr 0
7909 * sub 11,11,12 # r11 = index * 4
7910 * addis 12,12,(got+4-1b)@ha
7911 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7912 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7913 * mtctr 0
7914 * add 0,11,11
7915 * add 11,0,11 # r11 = index * 12 = reloc offset.
7916 * bctr
7917 */
7918 static const unsigned int pic_plt_resolve[] =
7919 {
7920 ADDIS_11_11,
7921 MFLR_0,
7922 BCL_20_31,
7923 ADDI_11_11,
7924 MFLR_12,
7925 MTLR_0,
7926 SUB_11_11_12,
7927 ADDIS_12_12,
7928 LWZ_0_12,
7929 LWZ_12_12,
7930 MTCTR_0,
7931 ADD_0_11_11,
7932 ADD_11_0_11,
7933 BCTR,
7934 NOP,
7935 NOP
7936 };
7937
176a0d42
AM
7938 /*
7939 * Non-PIC glink code is a little simpler.
7940 *
7941 * # ith PLT code stub.
7942 * lis 11,(plt+(i-1)*4)@ha
7943 * lwz 11,(plt+(i-1)*4)@l(11)
7944 * mtctr 11
7945 * bctr
7946 *
7947 * The branch table is the same, then comes
7948 *
7949 * PLTresolve:
7950 * lis 12,(got+4)@ha
7951 * addis 11,11,(-res_0)@ha
7952 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
7953 * addi 11,11,(-res_0)@l # r11 = index * 4
7954 * mtctr 0
7955 * add 0,11,11
7956 * lwz 12,(got+8)@l(12) # got[2] contains the map address
7957 * add 11,0,11 # r11 = index * 12 = reloc offset.
7958 * bctr
7959 */
d7128ce4
AM
7960 static const unsigned int plt_resolve[] =
7961 {
a6aa5195
AM
7962 LIS_12,
7963 ADDIS_11_11,
7964 LWZ_0_12,
7965 ADDI_11_11,
d7128ce4 7966 MTCTR_0,
7e8aeb9a 7967 ADD_0_11_11,
a6aa5195 7968 LWZ_12_12,
7e8aeb9a 7969 ADD_11_0_11,
d7128ce4
AM
7970 BCTR,
7971 NOP,
7972 NOP,
a6aa5195
AM
7973 NOP,
7974 NOP,
7975 NOP,
7976 NOP,
d7128ce4
AM
7977 NOP
7978 };
7979
a6aa5195
AM
7980 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7981 abort ();
7982 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
7983 abort ();
7984
a6aa5195 7985 /* Build the branch table, one for each plt entry (less one),
86b9da88 7986 and perhaps some padding. */
a6aa5195
AM
7987 p = htab->glink->contents;
7988 p += htab->glink_pltresolve;
86b9da88
AM
7989 endp = htab->glink->contents;
7990 endp += htab->glink->size - GLINK_PLTRESOLVE;
7991 while (p < endp - 8 * 4)
7992 {
7993 bfd_put_32 (output_bfd, B + endp - p, p);
7994 p += 4;
7995 }
7996 while (p < endp)
7997 {
7998 bfd_put_32 (output_bfd, NOP, p);
7999 p += 4;
8000 }
8001
7e8aeb9a 8002 res0 = (htab->glink_pltresolve
86b9da88
AM
8003 + htab->glink->output_section->vma
8004 + htab->glink->output_offset);
8005
8006 /* Last comes the PLTresolve stub. */
7e8aeb9a
AM
8007 if (info->shared || info->pie)
8008 {
a6aa5195 8009 bfd_vma bcl;
d7128ce4 8010
a6aa5195 8011 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 8012 {
a6aa5195 8013 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7e8aeb9a
AM
8014 p += 4;
8015 }
a6aa5195
AM
8016 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8017
8018 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8019 + htab->glink->output_section->vma
8020 + htab->glink->output_offset);
8021
8022 bfd_put_32 (output_bfd,
8023 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8024 bfd_put_32 (output_bfd,
8025 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8026 bfd_put_32 (output_bfd,
8027 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8028 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8029 {
8030 bfd_put_32 (output_bfd,
8031 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8032 bfd_put_32 (output_bfd,
8033 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8034 }
8035 else
8036 {
8037 bfd_put_32 (output_bfd,
8038 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8039 bfd_put_32 (output_bfd,
8040 LWZ_12_12 + 4, p + 9*4);
8041 }
7e8aeb9a
AM
8042 }
8043 else
d7128ce4 8044 {
a6aa5195 8045 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a
AM
8046 {
8047 bfd_put_32 (output_bfd, plt_resolve[i], p);
8048 p += 4;
8049 }
a6aa5195
AM
8050 p -= 4 * ARRAY_SIZE (plt_resolve);
8051
8052 bfd_put_32 (output_bfd,
8053 LIS_12 + PPC_HA (got + 4), p + 0*4);
8054 bfd_put_32 (output_bfd,
8055 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8056 bfd_put_32 (output_bfd,
8057 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8058 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8059 {
8060 bfd_put_32 (output_bfd,
8061 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8062 bfd_put_32 (output_bfd,
8063 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8064 }
8065 else
8066 {
8067 bfd_put_32 (output_bfd,
8068 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8069 bfd_put_32 (output_bfd,
8070 LWZ_12_12 + 4, p + 6*4);
8071 }
d7128ce4 8072 }
d7128ce4
AM
8073 }
8074
e87d4038 8075 return ret;
25dbc73a 8076}
e1a9cb8e 8077\f
252b5132
RH
8078#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8079#define TARGET_LITTLE_NAME "elf32-powerpcle"
8080#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8081#define TARGET_BIG_NAME "elf32-powerpc"
8082#define ELF_ARCH bfd_arch_powerpc
8083#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
8084#ifdef __QNXTARGET__
8085#define ELF_MAXPAGESIZE 0x1000
8086#else
252b5132 8087#define ELF_MAXPAGESIZE 0x10000
d0facd1b 8088#endif
b1342370 8089#define ELF_MINPAGESIZE 0x1000
24718e3b 8090#define ELF_COMMONPAGESIZE 0x1000
252b5132
RH
8091#define elf_info_to_howto ppc_elf_info_to_howto
8092
8093#ifdef EM_CYGNUS_POWERPC
8094#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8095#endif
8096
8097#ifdef EM_PPC_OLD
8098#define ELF_MACHINE_ALT2 EM_PPC_OLD
8099#endif
8100
8101#define elf_backend_plt_not_loaded 1
252b5132 8102#define elf_backend_can_gc_sections 1
51b64d56 8103#define elf_backend_can_refcount 1
b491616a 8104#define elf_backend_rela_normal 1
252b5132 8105
43c40ab2 8106#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 8107#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 8108#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 8109#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
157090f7 8110#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 8111#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 8112#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 8113#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 8114
feee612b 8115#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
8116#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8117#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8118#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8119#define elf_backend_relocate_section ppc_elf_relocate_section
8120#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8121#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 8122#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
8123#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8124#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8125#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 8126#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
8127#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8128#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8129#define elf_backend_fake_sections ppc_elf_fake_sections
8130#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
c5fccbec
DJ
8131#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8132#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 8133#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 8134#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
8135#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8136#define elf_backend_final_write_processing ppc_elf_final_write_processing
8137#define elf_backend_write_section ppc_elf_write_section
551b43fd 8138#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 8139#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 8140#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 8141#define elf_backend_init_index_section _bfd_elf_init_1_index_section
252b5132
RH
8142
8143#include "elf32-target.h"
9d8504b1
PB
8144
8145/* VxWorks Target */
8146
8147#undef TARGET_LITTLE_SYM
8148#undef TARGET_LITTLE_NAME
8149
8150#undef TARGET_BIG_SYM
8151#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8152#undef TARGET_BIG_NAME
8153#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8154
d5e3d971
PB
8155/* VxWorks uses the elf default section flags for .plt. */
8156static const struct bfd_elf_special_section *
8157ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 8158{
d5e3d971
PB
8159 if (sec->name == NULL)
8160 return NULL;
8161
8162 if (strcmp (sec->name, ".plt") == 0)
8163 return _bfd_elf_get_sec_type_attr (abfd, sec);
8164
8165 return ppc_elf_get_sec_type_attr (abfd, sec);
8166}
9d8504b1
PB
8167
8168/* Like ppc_elf_link_hash_table_create, but overrides
8169 appropriately for VxWorks. */
8170static struct bfd_link_hash_table *
8171ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8172{
8173 struct bfd_link_hash_table *ret;
8174
8175 ret = ppc_elf_link_hash_table_create (abfd);
8176 if (ret)
8177 {
8178 struct ppc_elf_link_hash_table *htab
8179 = (struct ppc_elf_link_hash_table *)ret;
8180 htab->is_vxworks = 1;
4a3dc543 8181 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
8182 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8183 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8184 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8185 }
8186 return ret;
8187}
8188
8189/* Tweak magic VxWorks symbols as they are loaded. */
8190static bfd_boolean
8191ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8192 struct bfd_link_info *info,
8193 Elf_Internal_Sym *sym,
8194 const char **namep ATTRIBUTE_UNUSED,
8195 flagword *flagsp ATTRIBUTE_UNUSED,
8196 asection **secp,
8197 bfd_vma *valp)
8198{
8199 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8200 valp))
8201 return FALSE;
8202
8203 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8204}
8205
9d8504b1
PB
8206static void
8207ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8208{
8209 ppc_elf_final_write_processing(abfd, linker);
8210 elf_vxworks_final_write_processing(abfd, linker);
8211}
8212
8213/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8214 define it. */
8215#undef elf_backend_want_plt_sym
8216#define elf_backend_want_plt_sym 1
8217#undef elf_backend_want_got_plt
8218#define elf_backend_want_got_plt 1
8219#undef elf_backend_got_symbol_offset
8220#define elf_backend_got_symbol_offset 0
8221#undef elf_backend_plt_not_loaded
8222#define elf_backend_plt_not_loaded 0
8223#undef elf_backend_plt_readonly
8224#define elf_backend_plt_readonly 1
8225#undef elf_backend_got_header_size
8226#define elf_backend_got_header_size 12
8227
468392fb
AM
8228#undef bfd_elf32_get_synthetic_symtab
8229
9d8504b1
PB
8230#undef bfd_elf32_bfd_link_hash_table_create
8231#define bfd_elf32_bfd_link_hash_table_create \
8232 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
8233#undef elf_backend_add_symbol_hook
8234#define elf_backend_add_symbol_hook \
8235 ppc_elf_vxworks_add_symbol_hook
8236#undef elf_backend_link_output_symbol_hook
8237#define elf_backend_link_output_symbol_hook \
9c72ff84 8238 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
8239#undef elf_backend_final_write_processing
8240#define elf_backend_final_write_processing \
8241 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
8242#undef elf_backend_get_sec_type_attr
8243#define elf_backend_get_sec_type_attr \
8244 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
8245#undef elf_backend_emit_relocs
8246#define elf_backend_emit_relocs \
8247 elf_vxworks_emit_relocs
8248
8249#undef elf32_bed
8250#define elf32_bed ppc_elf_vxworks_bed
8251
8252#include "elf32-target.h"
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