* elf-hppa.h (elf_hppa_final_link): Use gp val of zero when none
[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,
264a1fe0 3 2004, 2005 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
10 the Free Software Foundation; either version 2 of the License, or
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
RH
22
23/* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
28#include "bfd.h"
29#include "sysdep.h"
30#include "bfdlink.h"
31#include "libbfd.h"
32#include "elf-bfd.h"
33#include "elf/ppc.h"
7619e7c7 34#include "elf32-ppc.h"
9d8504b1 35#include "elf-vxworks.h"
252b5132 36
f0fe0e16 37/* RELA relocations are used here. */
252b5132 38
252b5132 39static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 41static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 43
70bccea4
AM
44/* Branch prediction bit for branch taken relocs. */
45#define BRANCH_PREDICT_BIT 0x200000
46/* Mask to set RA in memory instructions. */
47#define RA_REGISTER_MASK 0x001f0000
48/* Value to shift register by to insert RA. */
49#define RA_REGISTER_SHIFT 16
252b5132
RH
50
51/* The name of the dynamic interpreter. This is put in the .interp
52 section. */
252b5132
RH
53#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
54
d7128ce4 55/* For old-style PLT. */
252b5132
RH
56/* The number of single-slot PLT entries (the rest use two slots). */
57#define PLT_NUM_SINGLE_ENTRIES 8192
58
d7128ce4 59/* For new-style .glink and .plt. */
a6aa5195 60#define GLINK_PLTRESOLVE 16*4
d7128ce4
AM
61#define GLINK_ENTRY_SIZE 4*4
62
9d8504b1
PB
63/* VxWorks uses its own plt layout, filled in by the static linker. */
64
65/* The standard VxWorks PLT entry. */
66#define VXWORKS_PLT_ENTRY_SIZE 32
67static const bfd_vma ppc_elf_vxworks_plt_entry
68 [VXWORKS_PLT_ENTRY_SIZE / 4] =
69 {
70 0x3d800000, /* lis r12,0 */
71 0x818c0000, /* lwz r12,0(r12) */
72 0x7d8903a6, /* mtctr r12 */
73 0x4e800420, /* bctr */
74 0x39600000, /* li r11,0 */
75 0x48000000, /* b 14 <.PLT0resolve+0x4> */
76 0x60000000, /* nop */
77 0x60000000, /* nop */
78 };
79static const bfd_vma ppc_elf_vxworks_pic_plt_entry
80 [VXWORKS_PLT_ENTRY_SIZE / 4] =
81 {
82 0x3d9e0000, /* addis r12,r30,0 */
83 0x818c0000, /* lwz r12,0(r12) */
84 0x7d8903a6, /* mtctr r12 */
85 0x4e800420, /* bctr */
86 0x39600000, /* li r11,0 */
87 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
88 0x60000000, /* nop */
89 0x60000000, /* nop */
90 };
91
92/* The initial VxWorks PLT entry. */
93#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
94static const bfd_vma ppc_elf_vxworks_plt0_entry
95 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
96 {
97 0x3d800000, /* lis r12,0 */
98 0x398c0000, /* addi r12,r12,0 */
99 0x800c0008, /* lwz r0,8(r12) */
100 0x7c0903a6, /* mtctr r0 */
101 0x818c0004, /* lwz r12,4(r12) */
102 0x4e800420, /* bctr */
103 0x60000000, /* nop */
104 0x60000000, /* nop */
105 };
106static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
107 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
108 {
109 0x819e0008, /* lwz r12,8(r30) */
110 0x7d8903a6, /* mtctr r12 */
111 0x819e0004, /* lwz r12,4(r30) */
112 0x4e800420, /* bctr */
113 0x60000000, /* nop */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 };
118
119/* For executables, we have some additional relocations in
120 .rela.plt.unloaded, for the kernel loader. */
121
122/* The number of non-JMP_SLOT relocations per PLT0 slot. */
123#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
124/* The number of relocations in the PLTResolve slot. */
125#define VXWORKS_PLTRESOLVE_RELOCS 2
126/* The number of relocations in the PLTResolve slot when when creating
127 a shared library. */
128#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
129
d7128ce4 130/* Some instructions. */
d7128ce4 131#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM
132#define ADDIS_11_30 0x3d7e0000
133#define ADDIS_12_12 0x3d8c0000
d7128ce4 134#define ADDI_11_11 0x396b0000
d7128ce4
AM
135#define ADD_0_11_11 0x7c0b5a14
136#define ADD_11_0_11 0x7d605a14
a6aa5195
AM
137#define B 0x48000000
138#define BCL_20_31 0x429f0005
d7128ce4 139#define BCTR 0x4e800420
7e8aeb9a
AM
140#define LIS_11 0x3d600000
141#define LIS_12 0x3d800000
a6aa5195
AM
142#define LWZU_0_12 0x840c0000
143#define LWZ_0_12 0x800c0000
144#define LWZ_11_11 0x816b0000
145#define LWZ_11_30 0x817e0000
146#define LWZ_12_12 0x818c0000
147#define MFLR_0 0x7c0802a6
148#define MFLR_12 0x7d8802a6
149#define MTCTR_0 0x7c0903a6
150#define MTCTR_11 0x7d6903a6
151#define MTLR_0 0x7c0803a6
152#define NOP 0x60000000
153#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM
154
155/* Offset of tp and dtp pointers from start of TLS block. */
156#define TP_OFFSET 0x7000
157#define DTP_OFFSET 0x8000
7fce784e 158\f
e47cd125 159static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 160
8da6118f 161static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH
162 /* This reloc does nothing. */
163 HOWTO (R_PPC_NONE, /* type */
164 0, /* rightshift */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
166 32, /* bitsize */
b34976b6 167 FALSE, /* pc_relative */
252b5132
RH
168 0, /* bitpos */
169 complain_overflow_bitfield, /* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_PPC_NONE", /* name */
b34976b6 172 FALSE, /* partial_inplace */
252b5132
RH
173 0, /* src_mask */
174 0, /* dst_mask */
b34976b6 175 FALSE), /* pcrel_offset */
252b5132
RH
176
177 /* A standard 32 bit relocation. */
178 HOWTO (R_PPC_ADDR32, /* type */
179 0, /* rightshift */
180 2, /* size (0 = byte, 1 = short, 2 = long) */
181 32, /* bitsize */
b34976b6 182 FALSE, /* pc_relative */
252b5132
RH
183 0, /* bitpos */
184 complain_overflow_bitfield, /* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_PPC_ADDR32", /* name */
b34976b6 187 FALSE, /* partial_inplace */
252b5132
RH
188 0, /* src_mask */
189 0xffffffff, /* dst_mask */
b34976b6 190 FALSE), /* pcrel_offset */
252b5132
RH
191
192 /* An absolute 26 bit branch; the lower two bits must be zero.
193 FIXME: we don't check that, we just clear them. */
194 HOWTO (R_PPC_ADDR24, /* type */
195 0, /* rightshift */
196 2, /* size (0 = byte, 1 = short, 2 = long) */
197 26, /* bitsize */
b34976b6 198 FALSE, /* pc_relative */
252b5132
RH
199 0, /* bitpos */
200 complain_overflow_bitfield, /* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_PPC_ADDR24", /* name */
b34976b6 203 FALSE, /* partial_inplace */
252b5132
RH
204 0, /* src_mask */
205 0x3fffffc, /* dst_mask */
b34976b6 206 FALSE), /* pcrel_offset */
252b5132
RH
207
208 /* A standard 16 bit relocation. */
209 HOWTO (R_PPC_ADDR16, /* type */
210 0, /* rightshift */
211 1, /* size (0 = byte, 1 = short, 2 = long) */
212 16, /* bitsize */
b34976b6 213 FALSE, /* pc_relative */
252b5132
RH
214 0, /* bitpos */
215 complain_overflow_bitfield, /* complain_on_overflow */
216 bfd_elf_generic_reloc, /* special_function */
217 "R_PPC_ADDR16", /* name */
b34976b6 218 FALSE, /* partial_inplace */
252b5132
RH
219 0, /* src_mask */
220 0xffff, /* dst_mask */
b34976b6 221 FALSE), /* pcrel_offset */
252b5132
RH
222
223 /* A 16 bit relocation without overflow. */
224 HOWTO (R_PPC_ADDR16_LO, /* type */
225 0, /* rightshift */
226 1, /* size (0 = byte, 1 = short, 2 = long) */
227 16, /* bitsize */
b34976b6 228 FALSE, /* pc_relative */
252b5132
RH
229 0, /* bitpos */
230 complain_overflow_dont,/* complain_on_overflow */
231 bfd_elf_generic_reloc, /* special_function */
232 "R_PPC_ADDR16_LO", /* name */
b34976b6 233 FALSE, /* partial_inplace */
252b5132
RH
234 0, /* src_mask */
235 0xffff, /* dst_mask */
b34976b6 236 FALSE), /* pcrel_offset */
252b5132
RH
237
238 /* The high order 16 bits of an address. */
239 HOWTO (R_PPC_ADDR16_HI, /* type */
240 16, /* rightshift */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
242 16, /* bitsize */
b34976b6 243 FALSE, /* pc_relative */
252b5132
RH
244 0, /* bitpos */
245 complain_overflow_dont, /* complain_on_overflow */
246 bfd_elf_generic_reloc, /* special_function */
247 "R_PPC_ADDR16_HI", /* name */
b34976b6 248 FALSE, /* partial_inplace */
252b5132
RH
249 0, /* src_mask */
250 0xffff, /* dst_mask */
b34976b6 251 FALSE), /* pcrel_offset */
252b5132
RH
252
253 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 254 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH
255 HOWTO (R_PPC_ADDR16_HA, /* type */
256 16, /* rightshift */
257 1, /* size (0 = byte, 1 = short, 2 = long) */
258 16, /* bitsize */
b34976b6 259 FALSE, /* pc_relative */
252b5132
RH
260 0, /* bitpos */
261 complain_overflow_dont, /* complain_on_overflow */
262 ppc_elf_addr16_ha_reloc, /* special_function */
263 "R_PPC_ADDR16_HA", /* name */
b34976b6 264 FALSE, /* partial_inplace */
252b5132
RH
265 0, /* src_mask */
266 0xffff, /* dst_mask */
b34976b6 267 FALSE), /* pcrel_offset */
252b5132
RH
268
269 /* An absolute 16 bit branch; the lower two bits must be zero.
270 FIXME: we don't check that, we just clear them. */
271 HOWTO (R_PPC_ADDR14, /* type */
272 0, /* rightshift */
273 2, /* size (0 = byte, 1 = short, 2 = long) */
274 16, /* bitsize */
b34976b6 275 FALSE, /* pc_relative */
252b5132
RH
276 0, /* bitpos */
277 complain_overflow_bitfield, /* complain_on_overflow */
278 bfd_elf_generic_reloc, /* special_function */
279 "R_PPC_ADDR14", /* name */
b34976b6 280 FALSE, /* partial_inplace */
252b5132
RH
281 0, /* src_mask */
282 0xfffc, /* dst_mask */
b34976b6 283 FALSE), /* pcrel_offset */
252b5132
RH
284
285 /* An absolute 16 bit branch, for which bit 10 should be set to
286 indicate that the branch is expected to be taken. The lower two
8da6118f 287 bits must be zero. */
252b5132
RH
288 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
289 0, /* rightshift */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
291 16, /* bitsize */
b34976b6 292 FALSE, /* pc_relative */
252b5132
RH
293 0, /* bitpos */
294 complain_overflow_bitfield, /* complain_on_overflow */
295 bfd_elf_generic_reloc, /* special_function */
296 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 297 FALSE, /* partial_inplace */
252b5132
RH
298 0, /* src_mask */
299 0xfffc, /* dst_mask */
b34976b6 300 FALSE), /* pcrel_offset */
252b5132
RH
301
302 /* An absolute 16 bit branch, for which bit 10 should be set to
303 indicate that the branch is not expected to be taken. The lower
304 two bits must be zero. */
305 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
306 0, /* rightshift */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
308 16, /* bitsize */
b34976b6 309 FALSE, /* pc_relative */
252b5132
RH
310 0, /* bitpos */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 314 FALSE, /* partial_inplace */
252b5132
RH
315 0, /* src_mask */
316 0xfffc, /* dst_mask */
b34976b6 317 FALSE), /* pcrel_offset */
252b5132 318
8da6118f 319 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH
320 HOWTO (R_PPC_REL24, /* type */
321 0, /* rightshift */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
323 26, /* bitsize */
b34976b6 324 TRUE, /* pc_relative */
252b5132
RH
325 0, /* bitpos */
326 complain_overflow_signed, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC_REL24", /* name */
b34976b6 329 FALSE, /* partial_inplace */
252b5132
RH
330 0, /* src_mask */
331 0x3fffffc, /* dst_mask */
b34976b6 332 TRUE), /* pcrel_offset */
252b5132 333
8da6118f 334 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH
335 HOWTO (R_PPC_REL14, /* type */
336 0, /* rightshift */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
338 16, /* bitsize */
b34976b6 339 TRUE, /* pc_relative */
252b5132
RH
340 0, /* bitpos */
341 complain_overflow_signed, /* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC_REL14", /* name */
b34976b6 344 FALSE, /* partial_inplace */
252b5132
RH
345 0, /* src_mask */
346 0xfffc, /* dst_mask */
b34976b6 347 TRUE), /* pcrel_offset */
252b5132 348
8da6118f 349 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
350 the branch is expected to be taken. The lower two bits must be
351 zero. */
352 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 16, /* bitsize */
b34976b6 356 TRUE, /* pc_relative */
252b5132
RH
357 0, /* bitpos */
358 complain_overflow_signed, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 361 FALSE, /* partial_inplace */
252b5132
RH
362 0, /* src_mask */
363 0xfffc, /* dst_mask */
b34976b6 364 TRUE), /* pcrel_offset */
252b5132 365
8da6118f 366 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
367 the branch is not expected to be taken. The lower two bits must
368 be zero. */
369 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
370 0, /* rightshift */
371 2, /* size (0 = byte, 1 = short, 2 = long) */
372 16, /* bitsize */
b34976b6 373 TRUE, /* pc_relative */
252b5132
RH
374 0, /* bitpos */
375 complain_overflow_signed, /* complain_on_overflow */
376 bfd_elf_generic_reloc, /* special_function */
377 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 378 FALSE, /* partial_inplace */
252b5132
RH
379 0, /* src_mask */
380 0xfffc, /* dst_mask */
b34976b6 381 TRUE), /* pcrel_offset */
252b5132
RH
382
383 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
384 symbol. */
385 HOWTO (R_PPC_GOT16, /* type */
386 0, /* rightshift */
387 1, /* size (0 = byte, 1 = short, 2 = long) */
388 16, /* bitsize */
b34976b6 389 FALSE, /* pc_relative */
252b5132
RH
390 0, /* bitpos */
391 complain_overflow_signed, /* complain_on_overflow */
392 bfd_elf_generic_reloc, /* special_function */
393 "R_PPC_GOT16", /* name */
b34976b6 394 FALSE, /* partial_inplace */
252b5132
RH
395 0, /* src_mask */
396 0xffff, /* dst_mask */
b34976b6 397 FALSE), /* pcrel_offset */
252b5132
RH
398
399 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
400 the symbol. */
401 HOWTO (R_PPC_GOT16_LO, /* type */
402 0, /* rightshift */
403 1, /* size (0 = byte, 1 = short, 2 = long) */
404 16, /* bitsize */
b34976b6 405 FALSE, /* pc_relative */
252b5132
RH
406 0, /* bitpos */
407 complain_overflow_dont, /* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_PPC_GOT16_LO", /* name */
b34976b6 410 FALSE, /* partial_inplace */
252b5132
RH
411 0, /* src_mask */
412 0xffff, /* dst_mask */
b34976b6 413 FALSE), /* pcrel_offset */
252b5132
RH
414
415 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
416 the symbol. */
417 HOWTO (R_PPC_GOT16_HI, /* type */
418 16, /* rightshift */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
420 16, /* bitsize */
b34976b6 421 FALSE, /* pc_relative */
252b5132
RH
422 0, /* bitpos */
423 complain_overflow_bitfield, /* complain_on_overflow */
424 bfd_elf_generic_reloc, /* special_function */
425 "R_PPC_GOT16_HI", /* name */
b34976b6 426 FALSE, /* partial_inplace */
252b5132
RH
427 0, /* src_mask */
428 0xffff, /* dst_mask */
b34976b6 429 FALSE), /* pcrel_offset */
252b5132
RH
430
431 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
432 the symbol. */
433 HOWTO (R_PPC_GOT16_HA, /* type */
434 16, /* rightshift */
435 1, /* size (0 = byte, 1 = short, 2 = long) */
436 16, /* bitsize */
b34976b6 437 FALSE, /* pc_relative */
252b5132
RH
438 0, /* bitpos */
439 complain_overflow_bitfield, /* complain_on_overflow */
440 ppc_elf_addr16_ha_reloc, /* special_function */
441 "R_PPC_GOT16_HA", /* name */
b34976b6 442 FALSE, /* partial_inplace */
252b5132
RH
443 0, /* src_mask */
444 0xffff, /* dst_mask */
b34976b6 445 FALSE), /* pcrel_offset */
252b5132
RH
446
447 /* Like R_PPC_REL24, but referring to the procedure linkage table
448 entry for the symbol. */
449 HOWTO (R_PPC_PLTREL24, /* type */
450 0, /* rightshift */
451 2, /* size (0 = byte, 1 = short, 2 = long) */
452 26, /* bitsize */
b34976b6 453 TRUE, /* pc_relative */
252b5132
RH
454 0, /* bitpos */
455 complain_overflow_signed, /* complain_on_overflow */
456 bfd_elf_generic_reloc, /* special_function */
457 "R_PPC_PLTREL24", /* name */
b34976b6 458 FALSE, /* partial_inplace */
252b5132
RH
459 0, /* src_mask */
460 0x3fffffc, /* dst_mask */
b34976b6 461 TRUE), /* pcrel_offset */
252b5132
RH
462
463 /* This is used only by the dynamic linker. The symbol should exist
464 both in the object being run and in some shared library. The
465 dynamic linker copies the data addressed by the symbol from the
466 shared library into the object, because the object being
467 run has to have the data at some particular address. */
468 HOWTO (R_PPC_COPY, /* type */
469 0, /* rightshift */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
471 32, /* bitsize */
b34976b6 472 FALSE, /* pc_relative */
252b5132
RH
473 0, /* bitpos */
474 complain_overflow_bitfield, /* complain_on_overflow */
475 bfd_elf_generic_reloc, /* special_function */
476 "R_PPC_COPY", /* name */
b34976b6 477 FALSE, /* partial_inplace */
252b5132
RH
478 0, /* src_mask */
479 0, /* dst_mask */
b34976b6 480 FALSE), /* pcrel_offset */
252b5132
RH
481
482 /* Like R_PPC_ADDR32, but used when setting global offset table
483 entries. */
484 HOWTO (R_PPC_GLOB_DAT, /* type */
485 0, /* rightshift */
486 2, /* size (0 = byte, 1 = short, 2 = long) */
487 32, /* bitsize */
b34976b6 488 FALSE, /* pc_relative */
252b5132
RH
489 0, /* bitpos */
490 complain_overflow_bitfield, /* complain_on_overflow */
491 bfd_elf_generic_reloc, /* special_function */
492 "R_PPC_GLOB_DAT", /* name */
b34976b6 493 FALSE, /* partial_inplace */
252b5132
RH
494 0, /* src_mask */
495 0xffffffff, /* dst_mask */
b34976b6 496 FALSE), /* pcrel_offset */
252b5132
RH
497
498 /* Marks a procedure linkage table entry for a symbol. */
499 HOWTO (R_PPC_JMP_SLOT, /* type */
500 0, /* rightshift */
501 2, /* size (0 = byte, 1 = short, 2 = long) */
502 32, /* bitsize */
b34976b6 503 FALSE, /* pc_relative */
252b5132
RH
504 0, /* bitpos */
505 complain_overflow_bitfield, /* complain_on_overflow */
506 bfd_elf_generic_reloc, /* special_function */
507 "R_PPC_JMP_SLOT", /* name */
b34976b6 508 FALSE, /* partial_inplace */
252b5132
RH
509 0, /* src_mask */
510 0, /* dst_mask */
b34976b6 511 FALSE), /* pcrel_offset */
252b5132
RH
512
513 /* Used only by the dynamic linker. When the object is run, this
514 longword is set to the load address of the object, plus the
515 addend. */
516 HOWTO (R_PPC_RELATIVE, /* type */
517 0, /* rightshift */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
519 32, /* bitsize */
b34976b6 520 FALSE, /* pc_relative */
252b5132
RH
521 0, /* bitpos */
522 complain_overflow_bitfield, /* complain_on_overflow */
523 bfd_elf_generic_reloc, /* special_function */
524 "R_PPC_RELATIVE", /* name */
b34976b6 525 FALSE, /* partial_inplace */
252b5132
RH
526 0, /* src_mask */
527 0xffffffff, /* dst_mask */
b34976b6 528 FALSE), /* pcrel_offset */
252b5132
RH
529
530 /* Like R_PPC_REL24, but uses the value of the symbol within the
531 object rather than the final value. Normally used for
532 _GLOBAL_OFFSET_TABLE_. */
533 HOWTO (R_PPC_LOCAL24PC, /* type */
534 0, /* rightshift */
535 2, /* size (0 = byte, 1 = short, 2 = long) */
536 26, /* bitsize */
b34976b6 537 TRUE, /* pc_relative */
252b5132
RH
538 0, /* bitpos */
539 complain_overflow_signed, /* complain_on_overflow */
540 bfd_elf_generic_reloc, /* special_function */
541 "R_PPC_LOCAL24PC", /* name */
b34976b6 542 FALSE, /* partial_inplace */
252b5132
RH
543 0, /* src_mask */
544 0x3fffffc, /* dst_mask */
b34976b6 545 TRUE), /* pcrel_offset */
252b5132
RH
546
547 /* Like R_PPC_ADDR32, but may be unaligned. */
548 HOWTO (R_PPC_UADDR32, /* type */
549 0, /* rightshift */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
551 32, /* bitsize */
b34976b6 552 FALSE, /* pc_relative */
252b5132
RH
553 0, /* bitpos */
554 complain_overflow_bitfield, /* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_PPC_UADDR32", /* name */
b34976b6 557 FALSE, /* partial_inplace */
252b5132
RH
558 0, /* src_mask */
559 0xffffffff, /* dst_mask */
b34976b6 560 FALSE), /* pcrel_offset */
252b5132
RH
561
562 /* Like R_PPC_ADDR16, but may be unaligned. */
563 HOWTO (R_PPC_UADDR16, /* type */
564 0, /* rightshift */
565 1, /* size (0 = byte, 1 = short, 2 = long) */
566 16, /* bitsize */
b34976b6 567 FALSE, /* pc_relative */
252b5132
RH
568 0, /* bitpos */
569 complain_overflow_bitfield, /* complain_on_overflow */
570 bfd_elf_generic_reloc, /* special_function */
571 "R_PPC_UADDR16", /* name */
b34976b6 572 FALSE, /* partial_inplace */
252b5132
RH
573 0, /* src_mask */
574 0xffff, /* dst_mask */
b34976b6 575 FALSE), /* pcrel_offset */
252b5132
RH
576
577 /* 32-bit PC relative */
578 HOWTO (R_PPC_REL32, /* type */
579 0, /* rightshift */
580 2, /* size (0 = byte, 1 = short, 2 = long) */
581 32, /* bitsize */
b34976b6 582 TRUE, /* pc_relative */
252b5132
RH
583 0, /* bitpos */
584 complain_overflow_bitfield, /* complain_on_overflow */
585 bfd_elf_generic_reloc, /* special_function */
586 "R_PPC_REL32", /* name */
b34976b6 587 FALSE, /* partial_inplace */
252b5132
RH
588 0, /* src_mask */
589 0xffffffff, /* dst_mask */
b34976b6 590 TRUE), /* pcrel_offset */
252b5132
RH
591
592 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 593 FIXME: not supported. */
252b5132
RH
594 HOWTO (R_PPC_PLT32, /* type */
595 0, /* rightshift */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
597 32, /* bitsize */
b34976b6 598 FALSE, /* pc_relative */
252b5132
RH
599 0, /* bitpos */
600 complain_overflow_bitfield, /* complain_on_overflow */
601 bfd_elf_generic_reloc, /* special_function */
602 "R_PPC_PLT32", /* name */
b34976b6 603 FALSE, /* partial_inplace */
252b5132
RH
604 0, /* src_mask */
605 0, /* dst_mask */
b34976b6 606 FALSE), /* pcrel_offset */
252b5132
RH
607
608 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 609 FIXME: not supported. */
252b5132
RH
610 HOWTO (R_PPC_PLTREL32, /* type */
611 0, /* rightshift */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
613 32, /* bitsize */
b34976b6 614 TRUE, /* pc_relative */
252b5132
RH
615 0, /* bitpos */
616 complain_overflow_bitfield, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_PPC_PLTREL32", /* name */
b34976b6 619 FALSE, /* partial_inplace */
252b5132
RH
620 0, /* src_mask */
621 0, /* dst_mask */
b34976b6 622 TRUE), /* pcrel_offset */
252b5132
RH
623
624 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
625 the symbol. */
626 HOWTO (R_PPC_PLT16_LO, /* type */
627 0, /* rightshift */
628 1, /* size (0 = byte, 1 = short, 2 = long) */
629 16, /* bitsize */
b34976b6 630 FALSE, /* pc_relative */
252b5132
RH
631 0, /* bitpos */
632 complain_overflow_dont, /* complain_on_overflow */
633 bfd_elf_generic_reloc, /* special_function */
634 "R_PPC_PLT16_LO", /* name */
b34976b6 635 FALSE, /* partial_inplace */
252b5132
RH
636 0, /* src_mask */
637 0xffff, /* dst_mask */
b34976b6 638 FALSE), /* pcrel_offset */
252b5132
RH
639
640 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
641 the symbol. */
642 HOWTO (R_PPC_PLT16_HI, /* type */
643 16, /* rightshift */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
645 16, /* bitsize */
b34976b6 646 FALSE, /* pc_relative */
252b5132
RH
647 0, /* bitpos */
648 complain_overflow_bitfield, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC_PLT16_HI", /* name */
b34976b6 651 FALSE, /* partial_inplace */
252b5132
RH
652 0, /* src_mask */
653 0xffff, /* dst_mask */
b34976b6 654 FALSE), /* pcrel_offset */
252b5132
RH
655
656 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
657 the symbol. */
658 HOWTO (R_PPC_PLT16_HA, /* type */
659 16, /* rightshift */
660 1, /* size (0 = byte, 1 = short, 2 = long) */
661 16, /* bitsize */
b34976b6 662 FALSE, /* pc_relative */
252b5132
RH
663 0, /* bitpos */
664 complain_overflow_bitfield, /* complain_on_overflow */
665 ppc_elf_addr16_ha_reloc, /* special_function */
666 "R_PPC_PLT16_HA", /* name */
b34976b6 667 FALSE, /* partial_inplace */
252b5132
RH
668 0, /* src_mask */
669 0xffff, /* dst_mask */
b34976b6 670 FALSE), /* pcrel_offset */
252b5132
RH
671
672 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
673 small data items. */
674 HOWTO (R_PPC_SDAREL16, /* type */
675 0, /* rightshift */
676 1, /* size (0 = byte, 1 = short, 2 = long) */
677 16, /* bitsize */
b34976b6 678 FALSE, /* pc_relative */
252b5132
RH
679 0, /* bitpos */
680 complain_overflow_signed, /* complain_on_overflow */
681 bfd_elf_generic_reloc, /* special_function */
682 "R_PPC_SDAREL16", /* name */
b34976b6 683 FALSE, /* partial_inplace */
252b5132
RH
684 0, /* src_mask */
685 0xffff, /* dst_mask */
b34976b6 686 FALSE), /* pcrel_offset */
252b5132 687
c061c2d8 688 /* 16-bit section relative relocation. */
252b5132
RH
689 HOWTO (R_PPC_SECTOFF, /* type */
690 0, /* rightshift */
c061c2d8
AM
691 1, /* size (0 = byte, 1 = short, 2 = long) */
692 16, /* bitsize */
b34976b6 693 FALSE, /* pc_relative */
252b5132
RH
694 0, /* bitpos */
695 complain_overflow_bitfield, /* complain_on_overflow */
696 bfd_elf_generic_reloc, /* special_function */
697 "R_PPC_SECTOFF", /* name */
b34976b6 698 FALSE, /* partial_inplace */
252b5132 699 0, /* src_mask */
c061c2d8 700 0xffff, /* dst_mask */
b34976b6 701 FALSE), /* pcrel_offset */
252b5132 702
c3668558 703 /* 16-bit lower half section relative relocation. */
252b5132
RH
704 HOWTO (R_PPC_SECTOFF_LO, /* type */
705 0, /* rightshift */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
707 16, /* bitsize */
b34976b6 708 FALSE, /* pc_relative */
252b5132
RH
709 0, /* bitpos */
710 complain_overflow_dont, /* complain_on_overflow */
711 bfd_elf_generic_reloc, /* special_function */
712 "R_PPC_SECTOFF_LO", /* name */
b34976b6 713 FALSE, /* partial_inplace */
252b5132
RH
714 0, /* src_mask */
715 0xffff, /* dst_mask */
b34976b6 716 FALSE), /* pcrel_offset */
252b5132 717
c3668558 718 /* 16-bit upper half section relative relocation. */
252b5132
RH
719 HOWTO (R_PPC_SECTOFF_HI, /* type */
720 16, /* rightshift */
721 1, /* size (0 = byte, 1 = short, 2 = long) */
722 16, /* bitsize */
b34976b6 723 FALSE, /* pc_relative */
252b5132
RH
724 0, /* bitpos */
725 complain_overflow_bitfield, /* complain_on_overflow */
726 bfd_elf_generic_reloc, /* special_function */
727 "R_PPC_SECTOFF_HI", /* name */
b34976b6 728 FALSE, /* partial_inplace */
252b5132
RH
729 0, /* src_mask */
730 0xffff, /* dst_mask */
b34976b6 731 FALSE), /* pcrel_offset */
252b5132 732
c3668558 733 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH
734 HOWTO (R_PPC_SECTOFF_HA, /* type */
735 16, /* rightshift */
736 1, /* size (0 = byte, 1 = short, 2 = long) */
737 16, /* bitsize */
b34976b6 738 FALSE, /* pc_relative */
252b5132
RH
739 0, /* bitpos */
740 complain_overflow_bitfield, /* complain_on_overflow */
741 ppc_elf_addr16_ha_reloc, /* special_function */
742 "R_PPC_SECTOFF_HA", /* name */
b34976b6 743 FALSE, /* partial_inplace */
252b5132
RH
744 0, /* src_mask */
745 0xffff, /* dst_mask */
b34976b6 746 FALSE), /* pcrel_offset */
252b5132 747
7619e7c7
AM
748 /* Marker reloc for TLS. */
749 HOWTO (R_PPC_TLS,
252b5132
RH
750 0, /* rightshift */
751 2, /* size (0 = byte, 1 = short, 2 = long) */
752 32, /* bitsize */
b34976b6 753 FALSE, /* pc_relative */
252b5132 754 0, /* bitpos */
7619e7c7 755 complain_overflow_dont, /* complain_on_overflow */
252b5132 756 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM
757 "R_PPC_TLS", /* name */
758 FALSE, /* partial_inplace */
759 0, /* src_mask */
760 0, /* dst_mask */
761 FALSE), /* pcrel_offset */
762
763 /* Computes the load module index of the load module that contains the
764 definition of its TLS sym. */
765 HOWTO (R_PPC_DTPMOD32,
766 0, /* rightshift */
767 2, /* size (0 = byte, 1 = short, 2 = long) */
768 32, /* bitsize */
769 FALSE, /* pc_relative */
770 0, /* bitpos */
771 complain_overflow_dont, /* complain_on_overflow */
772 ppc_elf_unhandled_reloc, /* special_function */
773 "R_PPC_DTPMOD32", /* name */
b34976b6 774 FALSE, /* partial_inplace */
252b5132
RH
775 0, /* src_mask */
776 0xffffffff, /* dst_mask */
b34976b6 777 FALSE), /* pcrel_offset */
252b5132 778
7619e7c7
AM
779 /* Computes a dtv-relative displacement, the difference between the value
780 of sym+add and the base address of the thread-local storage block that
781 contains the definition of sym, minus 0x8000. */
782 HOWTO (R_PPC_DTPREL32,
783 0, /* rightshift */
784 2, /* size (0 = byte, 1 = short, 2 = long) */
785 32, /* bitsize */
786 FALSE, /* pc_relative */
787 0, /* bitpos */
788 complain_overflow_dont, /* complain_on_overflow */
789 ppc_elf_unhandled_reloc, /* special_function */
790 "R_PPC_DTPREL32", /* name */
791 FALSE, /* partial_inplace */
792 0, /* src_mask */
793 0xffffffff, /* dst_mask */
794 FALSE), /* pcrel_offset */
795
796 /* A 16 bit dtprel reloc. */
797 HOWTO (R_PPC_DTPREL16,
252b5132
RH
798 0, /* rightshift */
799 1, /* size (0 = byte, 1 = short, 2 = long) */
800 16, /* bitsize */
b34976b6 801 FALSE, /* pc_relative */
252b5132 802 0, /* bitpos */
7619e7c7
AM
803 complain_overflow_signed, /* complain_on_overflow */
804 ppc_elf_unhandled_reloc, /* special_function */
805 "R_PPC_DTPREL16", /* name */
b34976b6 806 FALSE, /* partial_inplace */
252b5132
RH
807 0, /* src_mask */
808 0xffff, /* dst_mask */
b34976b6 809 FALSE), /* pcrel_offset */
252b5132 810
7619e7c7
AM
811 /* Like DTPREL16, but no overflow. */
812 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH
813 0, /* rightshift */
814 1, /* size (0 = byte, 1 = short, 2 = long) */
815 16, /* bitsize */
b34976b6 816 FALSE, /* pc_relative */
252b5132 817 0, /* bitpos */
7619e7c7
AM
818 complain_overflow_dont, /* complain_on_overflow */
819 ppc_elf_unhandled_reloc, /* special_function */
820 "R_PPC_DTPREL16_LO", /* name */
b34976b6 821 FALSE, /* partial_inplace */
252b5132
RH
822 0, /* src_mask */
823 0xffff, /* dst_mask */
b34976b6 824 FALSE), /* pcrel_offset */
252b5132 825
7619e7c7
AM
826 /* Like DTPREL16_LO, but next higher group of 16 bits. */
827 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH
828 16, /* rightshift */
829 1, /* size (0 = byte, 1 = short, 2 = long) */
830 16, /* bitsize */
b34976b6 831 FALSE, /* pc_relative */
252b5132
RH
832 0, /* bitpos */
833 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
834 ppc_elf_unhandled_reloc, /* special_function */
835 "R_PPC_DTPREL16_HI", /* name */
b34976b6 836 FALSE, /* partial_inplace */
252b5132
RH
837 0, /* src_mask */
838 0xffff, /* dst_mask */
b34976b6 839 FALSE), /* pcrel_offset */
252b5132 840
7619e7c7
AM
841 /* Like DTPREL16_HI, but adjust for low 16 bits. */
842 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH
843 16, /* rightshift */
844 1, /* size (0 = byte, 1 = short, 2 = long) */
845 16, /* bitsize */
b34976b6 846 FALSE, /* pc_relative */
252b5132
RH
847 0, /* bitpos */
848 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
849 ppc_elf_unhandled_reloc, /* special_function */
850 "R_PPC_DTPREL16_HA", /* name */
b34976b6 851 FALSE, /* partial_inplace */
252b5132
RH
852 0, /* src_mask */
853 0xffff, /* dst_mask */
b34976b6 854 FALSE), /* pcrel_offset */
252b5132 855
7619e7c7
AM
856 /* Computes a tp-relative displacement, the difference between the value of
857 sym+add and the value of the thread pointer (r13). */
858 HOWTO (R_PPC_TPREL32,
859 0, /* rightshift */
860 2, /* size (0 = byte, 1 = short, 2 = long) */
861 32, /* bitsize */
862 FALSE, /* pc_relative */
863 0, /* bitpos */
864 complain_overflow_dont, /* complain_on_overflow */
865 ppc_elf_unhandled_reloc, /* special_function */
866 "R_PPC_TPREL32", /* name */
867 FALSE, /* partial_inplace */
868 0, /* src_mask */
869 0xffffffff, /* dst_mask */
870 FALSE), /* pcrel_offset */
871
872 /* A 16 bit tprel reloc. */
873 HOWTO (R_PPC_TPREL16,
252b5132
RH
874 0, /* rightshift */
875 1, /* size (0 = byte, 1 = short, 2 = long) */
876 16, /* bitsize */
b34976b6 877 FALSE, /* pc_relative */
252b5132 878 0, /* bitpos */
7619e7c7
AM
879 complain_overflow_signed, /* complain_on_overflow */
880 ppc_elf_unhandled_reloc, /* special_function */
881 "R_PPC_TPREL16", /* name */
b34976b6 882 FALSE, /* partial_inplace */
252b5132
RH
883 0, /* src_mask */
884 0xffff, /* dst_mask */
b34976b6 885 FALSE), /* pcrel_offset */
252b5132 886
7619e7c7
AM
887 /* Like TPREL16, but no overflow. */
888 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH
889 0, /* rightshift */
890 1, /* size (0 = byte, 1 = short, 2 = long) */
891 16, /* bitsize */
b34976b6 892 FALSE, /* pc_relative */
252b5132 893 0, /* bitpos */
7619e7c7
AM
894 complain_overflow_dont, /* complain_on_overflow */
895 ppc_elf_unhandled_reloc, /* special_function */
896 "R_PPC_TPREL16_LO", /* name */
b34976b6 897 FALSE, /* partial_inplace */
252b5132
RH
898 0, /* src_mask */
899 0xffff, /* dst_mask */
b34976b6 900 FALSE), /* pcrel_offset */
252b5132 901
7619e7c7
AM
902 /* Like TPREL16_LO, but next higher group of 16 bits. */
903 HOWTO (R_PPC_TPREL16_HI,
904 16, /* rightshift */
905 1, /* size (0 = byte, 1 = short, 2 = long) */
906 16, /* bitsize */
907 FALSE, /* pc_relative */
908 0, /* bitpos */
909 complain_overflow_dont, /* complain_on_overflow */
910 ppc_elf_unhandled_reloc, /* special_function */
911 "R_PPC_TPREL16_HI", /* name */
912 FALSE, /* partial_inplace */
913 0, /* src_mask */
914 0xffff, /* dst_mask */
915 FALSE), /* pcrel_offset */
916
917 /* Like TPREL16_HI, but adjust for low 16 bits. */
918 HOWTO (R_PPC_TPREL16_HA,
919 16, /* rightshift */
920 1, /* size (0 = byte, 1 = short, 2 = long) */
921 16, /* bitsize */
922 FALSE, /* pc_relative */
923 0, /* bitpos */
924 complain_overflow_dont, /* complain_on_overflow */
925 ppc_elf_unhandled_reloc, /* special_function */
926 "R_PPC_TPREL16_HA", /* name */
927 FALSE, /* partial_inplace */
928 0, /* src_mask */
929 0xffff, /* dst_mask */
930 FALSE), /* pcrel_offset */
931
932 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
933 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
934 to the first entry. */
935 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH
936 0, /* rightshift */
937 1, /* size (0 = byte, 1 = short, 2 = long) */
938 16, /* bitsize */
b34976b6 939 FALSE, /* pc_relative */
252b5132
RH
940 0, /* bitpos */
941 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
942 ppc_elf_unhandled_reloc, /* special_function */
943 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 944 FALSE, /* partial_inplace */
252b5132
RH
945 0, /* src_mask */
946 0xffff, /* dst_mask */
b34976b6 947 FALSE), /* pcrel_offset */
252b5132 948
7619e7c7
AM
949 /* Like GOT_TLSGD16, but no overflow. */
950 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 951 0, /* rightshift */
7619e7c7 952 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 953 16, /* bitsize */
b34976b6 954 FALSE, /* pc_relative */
252b5132 955 0, /* bitpos */
7619e7c7
AM
956 complain_overflow_dont, /* complain_on_overflow */
957 ppc_elf_unhandled_reloc, /* special_function */
958 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 959 FALSE, /* partial_inplace */
252b5132
RH
960 0, /* src_mask */
961 0xffff, /* dst_mask */
b34976b6 962 FALSE), /* pcrel_offset */
252b5132 963
7619e7c7
AM
964 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
965 HOWTO (R_PPC_GOT_TLSGD16_HI,
966 16, /* rightshift */
967 1, /* size (0 = byte, 1 = short, 2 = long) */
968 16, /* bitsize */
969 FALSE, /* pc_relative */
970 0, /* bitpos */
971 complain_overflow_dont, /* complain_on_overflow */
972 ppc_elf_unhandled_reloc, /* special_function */
973 "R_PPC_GOT_TLSGD16_HI", /* name */
974 FALSE, /* partial_inplace */
975 0, /* src_mask */
976 0xffff, /* dst_mask */
977 FALSE), /* pcrel_offset */
252b5132 978
7619e7c7
AM
979 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
980 HOWTO (R_PPC_GOT_TLSGD16_HA,
981 16, /* rightshift */
982 1, /* size (0 = byte, 1 = short, 2 = long) */
983 16, /* bitsize */
984 FALSE, /* pc_relative */
985 0, /* bitpos */
986 complain_overflow_dont, /* complain_on_overflow */
987 ppc_elf_unhandled_reloc, /* special_function */
988 "R_PPC_GOT_TLSGD16_HA", /* name */
989 FALSE, /* partial_inplace */
990 0, /* src_mask */
991 0xffff, /* dst_mask */
992 FALSE), /* pcrel_offset */
993
994 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
995 with values (sym+add)@dtpmod and zero, and computes the offset to the
996 first entry. */
997 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH
998 0, /* rightshift */
999 1, /* size (0 = byte, 1 = short, 2 = long) */
1000 16, /* bitsize */
7619e7c7 1001 FALSE, /* pc_relative */
252b5132
RH
1002 0, /* bitpos */
1003 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1004 ppc_elf_unhandled_reloc, /* special_function */
1005 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1006 FALSE, /* partial_inplace */
252b5132
RH
1007 0, /* src_mask */
1008 0xffff, /* dst_mask */
b34976b6 1009 FALSE), /* pcrel_offset */
252b5132 1010
7619e7c7
AM
1011 /* Like GOT_TLSLD16, but no overflow. */
1012 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1013 0, /* rightshift */
7619e7c7
AM
1014 1, /* size (0 = byte, 1 = short, 2 = long) */
1015 16, /* bitsize */
b34976b6 1016 FALSE, /* pc_relative */
252b5132
RH
1017 0, /* bitpos */
1018 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1019 ppc_elf_unhandled_reloc, /* special_function */
1020 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1021 FALSE, /* partial_inplace */
252b5132 1022 0, /* src_mask */
7619e7c7 1023 0xffff, /* dst_mask */
b34976b6 1024 FALSE), /* pcrel_offset */
252b5132 1025
7619e7c7
AM
1026 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1027 HOWTO (R_PPC_GOT_TLSLD16_HI,
1028 16, /* rightshift */
1029 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 16, /* bitsize */
b34976b6 1031 FALSE, /* pc_relative */
252b5132
RH
1032 0, /* bitpos */
1033 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1034 ppc_elf_unhandled_reloc, /* special_function */
1035 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1036 FALSE, /* partial_inplace */
252b5132 1037 0, /* src_mask */
7619e7c7 1038 0xffff, /* dst_mask */
b34976b6 1039 FALSE), /* pcrel_offset */
252b5132 1040
7619e7c7
AM
1041 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1042 HOWTO (R_PPC_GOT_TLSLD16_HA,
1043 16, /* rightshift */
1044 1, /* size (0 = byte, 1 = short, 2 = long) */
1045 16, /* bitsize */
1046 FALSE, /* pc_relative */
1047 0, /* bitpos */
1048 complain_overflow_dont, /* complain_on_overflow */
1049 ppc_elf_unhandled_reloc, /* special_function */
1050 "R_PPC_GOT_TLSLD16_HA", /* name */
1051 FALSE, /* partial_inplace */
1052 0, /* src_mask */
1053 0xffff, /* dst_mask */
1054 FALSE), /* pcrel_offset */
1055
1056 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1057 the offset to the entry. */
1058 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH
1059 0, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 16, /* bitsize */
b34976b6 1062 FALSE, /* pc_relative */
252b5132
RH
1063 0, /* bitpos */
1064 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1065 ppc_elf_unhandled_reloc, /* special_function */
1066 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1067 FALSE, /* partial_inplace */
252b5132
RH
1068 0, /* src_mask */
1069 0xffff, /* dst_mask */
b34976b6 1070 FALSE), /* pcrel_offset */
252b5132 1071
7619e7c7
AM
1072 /* Like GOT_DTPREL16, but no overflow. */
1073 HOWTO (R_PPC_GOT_DTPREL16_LO,
1074 0, /* rightshift */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 16, /* bitsize */
1077 FALSE, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_dont, /* complain_on_overflow */
1080 ppc_elf_unhandled_reloc, /* special_function */
1081 "R_PPC_GOT_DTPREL16_LO", /* name */
1082 FALSE, /* partial_inplace */
1083 0, /* src_mask */
1084 0xffff, /* dst_mask */
1085 FALSE), /* pcrel_offset */
252b5132 1086
7619e7c7
AM
1087 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1088 HOWTO (R_PPC_GOT_DTPREL16_HI,
1089 16, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 16, /* bitsize */
1092 FALSE, /* pc_relative */
1093 0, /* bitpos */
1094 complain_overflow_dont, /* complain_on_overflow */
1095 ppc_elf_unhandled_reloc, /* special_function */
1096 "R_PPC_GOT_DTPREL16_HI", /* name */
1097 FALSE, /* partial_inplace */
1098 0, /* src_mask */
1099 0xffff, /* dst_mask */
1100 FALSE), /* pcrel_offset */
252b5132 1101
7619e7c7
AM
1102 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1103 HOWTO (R_PPC_GOT_DTPREL16_HA,
1104 16, /* rightshift */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 16, /* bitsize */
1107 FALSE, /* pc_relative */
1108 0, /* bitpos */
1109 complain_overflow_dont, /* complain_on_overflow */
1110 ppc_elf_unhandled_reloc, /* special_function */
1111 "R_PPC_GOT_DTPREL16_HA", /* name */
1112 FALSE, /* partial_inplace */
1113 0, /* src_mask */
1114 0xffff, /* dst_mask */
1115 FALSE), /* pcrel_offset */
c3668558 1116
7619e7c7
AM
1117 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1118 offset to the entry. */
1119 HOWTO (R_PPC_GOT_TPREL16,
1120 0, /* rightshift */
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 16, /* bitsize */
1123 FALSE, /* pc_relative */
1124 0, /* bitpos */
1125 complain_overflow_signed, /* complain_on_overflow */
1126 ppc_elf_unhandled_reloc, /* special_function */
1127 "R_PPC_GOT_TPREL16", /* name */
1128 FALSE, /* partial_inplace */
1129 0, /* src_mask */
1130 0xffff, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1132
1133 /* Like GOT_TPREL16, but no overflow. */
1134 HOWTO (R_PPC_GOT_TPREL16_LO,
1135 0, /* rightshift */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 16, /* bitsize */
1138 FALSE, /* pc_relative */
1139 0, /* bitpos */
1140 complain_overflow_dont, /* complain_on_overflow */
1141 ppc_elf_unhandled_reloc, /* special_function */
1142 "R_PPC_GOT_TPREL16_LO", /* name */
1143 FALSE, /* partial_inplace */
1144 0, /* src_mask */
1145 0xffff, /* dst_mask */
1146 FALSE), /* pcrel_offset */
1147
1148 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1149 HOWTO (R_PPC_GOT_TPREL16_HI,
1150 16, /* rightshift */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 16, /* bitsize */
1153 FALSE, /* pc_relative */
1154 0, /* bitpos */
1155 complain_overflow_dont, /* complain_on_overflow */
1156 ppc_elf_unhandled_reloc, /* special_function */
1157 "R_PPC_GOT_TPREL16_HI", /* name */
1158 FALSE, /* partial_inplace */
1159 0, /* src_mask */
1160 0xffff, /* dst_mask */
1161 FALSE), /* pcrel_offset */
1162
1163 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1164 HOWTO (R_PPC_GOT_TPREL16_HA,
1165 16, /* rightshift */
1166 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 16, /* bitsize */
1168 FALSE, /* pc_relative */
1169 0, /* bitpos */
1170 complain_overflow_dont, /* complain_on_overflow */
1171 ppc_elf_unhandled_reloc, /* special_function */
1172 "R_PPC_GOT_TPREL16_HA", /* name */
1173 FALSE, /* partial_inplace */
1174 0, /* src_mask */
1175 0xffff, /* dst_mask */
1176 FALSE), /* pcrel_offset */
1177
1178 /* The remaining relocs are from the Embedded ELF ABI, and are not
1179 in the SVR4 ELF ABI. */
1180
1181 /* 32 bit value resulting from the addend minus the symbol. */
1182 HOWTO (R_PPC_EMB_NADDR32, /* type */
1183 0, /* rightshift */
1184 2, /* size (0 = byte, 1 = short, 2 = long) */
1185 32, /* bitsize */
1186 FALSE, /* pc_relative */
1187 0, /* bitpos */
1188 complain_overflow_bitfield, /* complain_on_overflow */
1189 bfd_elf_generic_reloc, /* special_function */
1190 "R_PPC_EMB_NADDR32", /* name */
1191 FALSE, /* partial_inplace */
1192 0, /* src_mask */
1193 0xffffffff, /* dst_mask */
1194 FALSE), /* pcrel_offset */
1195
1196 /* 16 bit value resulting from the addend minus the symbol. */
1197 HOWTO (R_PPC_EMB_NADDR16, /* type */
1198 0, /* rightshift */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1200 16, /* bitsize */
1201 FALSE, /* pc_relative */
1202 0, /* bitpos */
1203 complain_overflow_bitfield, /* complain_on_overflow */
1204 bfd_elf_generic_reloc, /* special_function */
1205 "R_PPC_EMB_NADDR16", /* name */
1206 FALSE, /* partial_inplace */
1207 0, /* src_mask */
1208 0xffff, /* dst_mask */
1209 FALSE), /* pcrel_offset */
1210
1211 /* 16 bit value resulting from the addend minus the symbol. */
1212 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1213 0, /* rightshift */
1214 1, /* size (0 = byte, 1 = short, 2 = long) */
1215 16, /* bitsize */
1216 FALSE, /* pc_relative */
1217 0, /* bitpos */
1218 complain_overflow_dont,/* complain_on_overflow */
1219 bfd_elf_generic_reloc, /* special_function */
1220 "R_PPC_EMB_ADDR16_LO", /* name */
1221 FALSE, /* partial_inplace */
1222 0, /* src_mask */
1223 0xffff, /* dst_mask */
1224 FALSE), /* pcrel_offset */
1225
1226 /* The high order 16 bits of the addend minus the symbol. */
1227 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1228 16, /* rightshift */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1230 16, /* bitsize */
1231 FALSE, /* pc_relative */
1232 0, /* bitpos */
1233 complain_overflow_dont, /* complain_on_overflow */
1234 bfd_elf_generic_reloc, /* special_function */
1235 "R_PPC_EMB_NADDR16_HI", /* name */
1236 FALSE, /* partial_inplace */
1237 0, /* src_mask */
1238 0xffff, /* dst_mask */
1239 FALSE), /* pcrel_offset */
1240
1241 /* The high order 16 bits of the result of the addend minus the address,
1242 plus 1 if the contents of the low 16 bits, treated as a signed number,
1243 is negative. */
1244 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1245 16, /* rightshift */
1246 1, /* size (0 = byte, 1 = short, 2 = long) */
1247 16, /* bitsize */
1248 FALSE, /* pc_relative */
1249 0, /* bitpos */
1250 complain_overflow_dont, /* complain_on_overflow */
25dbc73a
AM
1251 ppc_elf_addr16_ha_reloc, /* special_function */
1252 "R_PPC_EMB_NADDR16_HA", /* name */
1253 FALSE, /* partial_inplace */
1254 0, /* src_mask */
1255 0xffff, /* dst_mask */
1256 FALSE), /* pcrel_offset */
1257
1258 /* 16 bit value resulting from allocating a 4 byte word to hold an
1259 address in the .sdata section, and returning the offset from
1260 _SDA_BASE_ for that relocation. */
1261 HOWTO (R_PPC_EMB_SDAI16, /* type */
1262 0, /* rightshift */
1263 1, /* size (0 = byte, 1 = short, 2 = long) */
1264 16, /* bitsize */
1265 FALSE, /* pc_relative */
1266 0, /* bitpos */
1267 complain_overflow_bitfield, /* complain_on_overflow */
1268 bfd_elf_generic_reloc, /* special_function */
1269 "R_PPC_EMB_SDAI16", /* name */
1270 FALSE, /* partial_inplace */
1271 0, /* src_mask */
1272 0xffff, /* dst_mask */
1273 FALSE), /* pcrel_offset */
1274
1275 /* 16 bit value resulting from allocating a 4 byte word to hold an
1276 address in the .sdata2 section, and returning the offset from
1277 _SDA2_BASE_ for that relocation. */
1278 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1279 0, /* rightshift */
1280 1, /* size (0 = byte, 1 = short, 2 = long) */
1281 16, /* bitsize */
1282 FALSE, /* pc_relative */
1283 0, /* bitpos */
1284 complain_overflow_bitfield, /* complain_on_overflow */
1285 bfd_elf_generic_reloc, /* special_function */
1286 "R_PPC_EMB_SDA2I16", /* name */
1287 FALSE, /* partial_inplace */
1288 0, /* src_mask */
1289 0xffff, /* dst_mask */
1290 FALSE), /* pcrel_offset */
1291
1292 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1293 small data items. */
1294 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1295 0, /* rightshift */
1296 1, /* size (0 = byte, 1 = short, 2 = long) */
1297 16, /* bitsize */
1298 FALSE, /* pc_relative */
1299 0, /* bitpos */
1300 complain_overflow_signed, /* complain_on_overflow */
1301 bfd_elf_generic_reloc, /* special_function */
1302 "R_PPC_EMB_SDA2REL", /* name */
1303 FALSE, /* partial_inplace */
1304 0, /* src_mask */
1305 0xffff, /* dst_mask */
1306 FALSE), /* pcrel_offset */
1307
1308 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1309 signed offset from the appropriate base, and filling in the register
1310 field with the appropriate register (0, 2, or 13). */
1311 HOWTO (R_PPC_EMB_SDA21, /* type */
1312 0, /* rightshift */
1313 2, /* size (0 = byte, 1 = short, 2 = long) */
1314 16, /* bitsize */
1315 FALSE, /* pc_relative */
1316 0, /* bitpos */
1317 complain_overflow_signed, /* complain_on_overflow */
1318 bfd_elf_generic_reloc, /* special_function */
1319 "R_PPC_EMB_SDA21", /* name */
1320 FALSE, /* partial_inplace */
1321 0, /* src_mask */
1322 0xffff, /* dst_mask */
1323 FALSE), /* pcrel_offset */
1324
1325 /* Relocation not handled: R_PPC_EMB_MRKREF */
1326 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1327 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1328 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1329 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1330 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1331
1332 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1333 in the 16 bit signed offset from the appropriate base, and filling in the
1334 register field with the appropriate register (0, 2, or 13). */
1335 HOWTO (R_PPC_EMB_RELSDA, /* type */
1336 0, /* rightshift */
1337 1, /* size (0 = byte, 1 = short, 2 = long) */
1338 16, /* bitsize */
1339 TRUE, /* pc_relative */
1340 0, /* bitpos */
1341 complain_overflow_signed, /* complain_on_overflow */
1342 bfd_elf_generic_reloc, /* special_function */
1343 "R_PPC_EMB_RELSDA", /* name */
1344 FALSE, /* partial_inplace */
1345 0, /* src_mask */
1346 0xffff, /* dst_mask */
1347 FALSE), /* pcrel_offset */
1348
d7128ce4
AM
1349 /* A 16 bit relative relocation. */
1350 HOWTO (R_PPC_REL16, /* type */
1351 0, /* rightshift */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1353 16, /* bitsize */
1354 TRUE, /* pc_relative */
1355 0, /* bitpos */
1356 complain_overflow_bitfield, /* complain_on_overflow */
1357 bfd_elf_generic_reloc, /* special_function */
1358 "R_PPC_REL16", /* name */
1359 FALSE, /* partial_inplace */
1360 0, /* src_mask */
1361 0xffff, /* dst_mask */
1362 TRUE), /* pcrel_offset */
1363
1364 /* A 16 bit relative relocation without overflow. */
1365 HOWTO (R_PPC_REL16_LO, /* type */
1366 0, /* rightshift */
1367 1, /* size (0 = byte, 1 = short, 2 = long) */
1368 16, /* bitsize */
1369 TRUE, /* pc_relative */
1370 0, /* bitpos */
1371 complain_overflow_dont,/* complain_on_overflow */
1372 bfd_elf_generic_reloc, /* special_function */
1373 "R_PPC_REL16_LO", /* name */
1374 FALSE, /* partial_inplace */
1375 0, /* src_mask */
1376 0xffff, /* dst_mask */
1377 TRUE), /* pcrel_offset */
1378
1379 /* The high order 16 bits of a relative address. */
1380 HOWTO (R_PPC_REL16_HI, /* type */
1381 16, /* rightshift */
1382 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 16, /* bitsize */
1384 TRUE, /* pc_relative */
1385 0, /* bitpos */
1386 complain_overflow_dont, /* complain_on_overflow */
1387 bfd_elf_generic_reloc, /* special_function */
1388 "R_PPC_REL16_HI", /* name */
1389 FALSE, /* partial_inplace */
1390 0, /* src_mask */
1391 0xffff, /* dst_mask */
1392 TRUE), /* pcrel_offset */
1393
1394 /* The high order 16 bits of a relative address, plus 1 if the contents of
1395 the low 16 bits, treated as a signed number, is negative. */
1396 HOWTO (R_PPC_REL16_HA, /* type */
1397 16, /* rightshift */
1398 1, /* size (0 = byte, 1 = short, 2 = long) */
1399 16, /* bitsize */
1400 TRUE, /* pc_relative */
1401 0, /* bitpos */
1402 complain_overflow_dont, /* complain_on_overflow */
1403 ppc_elf_addr16_ha_reloc, /* special_function */
1404 "R_PPC_REL16_HA", /* name */
1405 FALSE, /* partial_inplace */
1406 0, /* src_mask */
1407 0xffff, /* dst_mask */
1408 TRUE), /* pcrel_offset */
1409
25dbc73a
AM
1410 /* GNU extension to record C++ vtable hierarchy. */
1411 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1412 0, /* rightshift */
1413 0, /* size (0 = byte, 1 = short, 2 = long) */
1414 0, /* bitsize */
1415 FALSE, /* pc_relative */
1416 0, /* bitpos */
1417 complain_overflow_dont, /* complain_on_overflow */
1418 NULL, /* special_function */
1419 "R_PPC_GNU_VTINHERIT", /* name */
1420 FALSE, /* partial_inplace */
1421 0, /* src_mask */
1422 0, /* dst_mask */
1423 FALSE), /* pcrel_offset */
1424
1425 /* GNU extension to record C++ vtable member usage. */
1426 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1427 0, /* rightshift */
1428 0, /* size (0 = byte, 1 = short, 2 = long) */
1429 0, /* bitsize */
1430 FALSE, /* pc_relative */
1431 0, /* bitpos */
1432 complain_overflow_dont, /* complain_on_overflow */
1433 NULL, /* special_function */
1434 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM
1435 FALSE, /* partial_inplace */
1436 0, /* src_mask */
25dbc73a 1437 0, /* dst_mask */
7619e7c7
AM
1438 FALSE), /* pcrel_offset */
1439
25dbc73a
AM
1440 /* Phony reloc to handle AIX style TOC entries. */
1441 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM
1442 0, /* rightshift */
1443 1, /* size (0 = byte, 1 = short, 2 = long) */
1444 16, /* bitsize */
1445 FALSE, /* pc_relative */
1446 0, /* bitpos */
25dbc73a 1447 complain_overflow_signed, /* complain_on_overflow */
7619e7c7 1448 bfd_elf_generic_reloc, /* special_function */
25dbc73a 1449 "R_PPC_TOC16", /* name */
7619e7c7
AM
1450 FALSE, /* partial_inplace */
1451 0, /* src_mask */
1452 0xffff, /* dst_mask */
1453 FALSE), /* pcrel_offset */
25dbc73a
AM
1454};
1455\f
1456/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1457
1458static void
1459ppc_elf_howto_init (void)
1460{
1461 unsigned int i, type;
1462
1463 for (i = 0;
1464 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1465 i++)
1466 {
1467 type = ppc_elf_howto_raw[i].type;
1468 if (type >= (sizeof (ppc_elf_howto_table)
1469 / sizeof (ppc_elf_howto_table[0])))
1470 abort ();
1471 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1472 }
1473}
1474
1475static reloc_howto_type *
1476ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1477 bfd_reloc_code_real_type code)
1478{
1479 enum elf_ppc_reloc_type r;
1480
1481 /* Initialize howto table if not already done. */
1482 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1483 ppc_elf_howto_init ();
1484
1485 switch (code)
1486 {
1487 default:
1488 return NULL;
1489
1490 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1491 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1492 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1493 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1494 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1495 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1496 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1497 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1498 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1499 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1500 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1501 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1502 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1503 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1504 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1505 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1506 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1507 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1508 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1509 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1510 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1511 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1512 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1513 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1514 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1515 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1516 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1517 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1518 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1519 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1520 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1521 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1522 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1523 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1524 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1525 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1526 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1527 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1528 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1529 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1530 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1531 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1532 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1533 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1534 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1535 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1536 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1537 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1538 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1539 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1540 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1541 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1542 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1543 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1544 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1545 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1546 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1547 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1548 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1549 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1550 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1551 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1552 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1553 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1554 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1555 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1556 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1557 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1558 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1559 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1560 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1561 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1562 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1563 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1564 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1565 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1566 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1567 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1568 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
d7128ce4
AM
1569 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1570 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1571 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1572 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
25dbc73a
AM
1573 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1574 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1575 }
1576
1577 return ppc_elf_howto_table[r];
1578};
1579
1580/* Set the howto pointer for a PowerPC ELF reloc. */
1581
1582static void
1583ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1584 arelent *cache_ptr,
1585 Elf_Internal_Rela *dst)
1586{
1587 /* Initialize howto table if not already done. */
1588 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1589 ppc_elf_howto_init ();
1590
1591 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1592 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1593}
1594
d7128ce4 1595/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM
1596
1597static bfd_reloc_status_type
1598ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1599 arelent *reloc_entry,
1600 asymbol *symbol,
1601 void *data ATTRIBUTE_UNUSED,
1602 asection *input_section,
1603 bfd *output_bfd,
1604 char **error_message ATTRIBUTE_UNUSED)
1605{
1606 bfd_vma relocation;
1607
1608 if (output_bfd != NULL)
1609 {
1610 reloc_entry->address += input_section->output_offset;
1611 return bfd_reloc_ok;
1612 }
1613
1614 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1615 return bfd_reloc_outofrange;
1616
1617 if (bfd_is_com_section (symbol->section))
1618 relocation = 0;
1619 else
1620 relocation = symbol->value;
1621
1622 relocation += symbol->section->output_section->vma;
1623 relocation += symbol->section->output_offset;
1624 relocation += reloc_entry->addend;
d7128ce4
AM
1625 if (reloc_entry->howto->pc_relative)
1626 relocation -= reloc_entry->address;
25dbc73a
AM
1627
1628 reloc_entry->addend += (relocation & 0x8000) << 1;
1629
1630 return bfd_reloc_continue;
1631}
1632
1633static bfd_reloc_status_type
1634ppc_elf_unhandled_reloc (bfd *abfd,
1635 arelent *reloc_entry,
1636 asymbol *symbol,
1637 void *data,
1638 asection *input_section,
1639 bfd *output_bfd,
1640 char **error_message)
1641{
1642 /* If this is a relocatable link (output_bfd test tells us), just
1643 call the generic function. Any adjustment will be done at final
1644 link time. */
1645 if (output_bfd != NULL)
1646 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1647 input_section, output_bfd, error_message);
1648
1649 if (error_message != NULL)
1650 {
1651 static char buf[60];
1652 sprintf (buf, _("generic linker can't handle %s"),
1653 reloc_entry->howto->name);
1654 *error_message = buf;
1655 }
1656 return bfd_reloc_dangerous;
1657}
1658\f
1659/* Sections created by the linker. */
1660
1661typedef struct elf_linker_section
1662{
c9a2f333 1663 /* Pointer to the bfd section. */
25dbc73a 1664 asection *section;
c9a2f333
AM
1665 /* Section name. */
1666 const char *name;
1667 /* Associated bss section name. */
1668 const char *bss_name;
1669 /* Associated symbol name. */
1670 const char *sym_name;
1671 /* Value of symbol. */
1672 bfd_vma sym_val;
25dbc73a
AM
1673} elf_linker_section_t;
1674
1675/* Linked list of allocated pointer entries. This hangs off of the
1676 symbol lists, and provides allows us to return different pointers,
1677 based on different addend's. */
1678
1679typedef struct elf_linker_section_pointers
1680{
1681 /* next allocated pointer for this symbol */
1682 struct elf_linker_section_pointers *next;
1683 /* offset of pointer from beginning of section */
1684 bfd_vma offset;
1685 /* addend used */
1686 bfd_vma addend;
1687 /* which linker section this is */
1688 elf_linker_section_t *lsect;
25dbc73a
AM
1689} elf_linker_section_pointers_t;
1690
1691struct ppc_elf_obj_tdata
1692{
1693 struct elf_obj_tdata elf;
1694
1695 /* A mapping from local symbols to offsets into the various linker
1696 sections added. This is index by the symbol index. */
1697 elf_linker_section_pointers_t **linker_section_pointers;
1698};
1699
1700#define ppc_elf_tdata(bfd) \
1701 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 1702
25dbc73a
AM
1703#define elf_local_ptr_offsets(bfd) \
1704 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 1705
25dbc73a 1706/* Override the generic function because we store some extras. */
7619e7c7 1707
25dbc73a
AM
1708static bfd_boolean
1709ppc_elf_mkobject (bfd *abfd)
1710{
1711 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1712 abfd->tdata.any = bfd_zalloc (abfd, amt);
1713 if (abfd->tdata.any == NULL)
1714 return FALSE;
1715 return TRUE;
1716}
7619e7c7 1717
25dbc73a
AM
1718/* Fix bad default arch selected for a 32 bit input bfd when the
1719 default is 64 bit. */
7619e7c7 1720
25dbc73a
AM
1721static bfd_boolean
1722ppc_elf_object_p (bfd *abfd)
1723{
1724 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1725 {
1726 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 1727
25dbc73a
AM
1728 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1729 {
1730 /* Relies on arch after 64 bit default being 32 bit default. */
1731 abfd->arch_info = abfd->arch_info->next;
1732 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1733 }
1734 }
1735 return TRUE;
1736}
7619e7c7 1737
25dbc73a 1738/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 1739
25dbc73a
AM
1740static bfd_boolean
1741ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1742{
1743 BFD_ASSERT (!elf_flags_init (abfd)
1744 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 1745
25dbc73a
AM
1746 elf_elfheader (abfd)->e_flags = flags;
1747 elf_flags_init (abfd) = TRUE;
1748 return TRUE;
1749}
1750
25dbc73a 1751/* Support for core dump NOTE sections. */
deaaf2f3 1752
b34976b6 1753static bfd_boolean
25dbc73a 1754ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 1755{
25dbc73a
AM
1756 int offset;
1757 unsigned int size;
252b5132 1758
25dbc73a
AM
1759 switch (note->descsz)
1760 {
1761 default:
1762 return FALSE;
252b5132 1763
25dbc73a
AM
1764 case 268: /* Linux/PPC. */
1765 /* pr_cursig */
1766 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 1767
25dbc73a
AM
1768 /* pr_pid */
1769 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 1770
25dbc73a
AM
1771 /* pr_reg */
1772 offset = 72;
1773 size = 192;
deaaf2f3 1774
25dbc73a
AM
1775 break;
1776 }
deaaf2f3 1777
25dbc73a
AM
1778 /* Make a ".reg/999" section. */
1779 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1780 size, note->descpos + offset);
1781}
252b5132 1782
25dbc73a
AM
1783static bfd_boolean
1784ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1785{
1786 switch (note->descsz)
deaaf2f3 1787 {
25dbc73a
AM
1788 default:
1789 return FALSE;
deaaf2f3 1790
25dbc73a
AM
1791 case 128: /* Linux/PPC elf_prpsinfo. */
1792 elf_tdata (abfd)->core_program
1793 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1794 elf_tdata (abfd)->core_command
1795 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1796 }
9abc968f 1797
25dbc73a
AM
1798 /* Note that for some reason, a spurious space is tacked
1799 onto the end of the args in some (at least one anyway)
1800 implementations, so strip it off if it exists. */
70bccea4 1801
25dbc73a
AM
1802 {
1803 char *command = elf_tdata (abfd)->core_command;
1804 int n = strlen (command);
70bccea4 1805
25dbc73a
AM
1806 if (0 < n && command[n - 1] == ' ')
1807 command[n - 1] = '\0';
1808 }
deaaf2f3 1809
25dbc73a
AM
1810 return TRUE;
1811}
deaaf2f3 1812
25dbc73a
AM
1813/* Return address for Ith PLT stub in section PLT, for relocation REL
1814 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 1815
25dbc73a
AM
1816static bfd_vma
1817ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1818 const asection *plt ATTRIBUTE_UNUSED,
1819 const arelent *rel)
1820{
1821 return rel->address;
1822}
deaaf2f3 1823
25dbc73a 1824/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
1825 is called when bfd_section_from_shdr finds a section with an unknown
1826 type. */
deaaf2f3 1827
25dbc73a 1828static bfd_boolean
6dc132d9
L
1829ppc_elf_section_from_shdr (bfd *abfd,
1830 Elf_Internal_Shdr *hdr,
1831 const char *name,
1832 int shindex)
25dbc73a
AM
1833{
1834 asection *newsect;
1835 flagword flags;
d1c6de6f 1836
6dc132d9 1837 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 1838 return FALSE;
deaaf2f3 1839
25dbc73a
AM
1840 newsect = hdr->bfd_section;
1841 flags = bfd_get_section_flags (abfd, newsect);
1842 if (hdr->sh_flags & SHF_EXCLUDE)
1843 flags |= SEC_EXCLUDE;
9abc968f 1844
25dbc73a
AM
1845 if (hdr->sh_type == SHT_ORDERED)
1846 flags |= SEC_SORT_ENTRIES;
d1c6de6f 1847
25dbc73a
AM
1848 bfd_set_section_flags (abfd, newsect, flags);
1849 return TRUE;
1850}
1851
1852/* Set up any other section flags and such that may be necessary. */
1853
1854static bfd_boolean
1855ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1856 Elf_Internal_Shdr *shdr,
1857 asection *asect)
1858{
1859 if ((asect->flags & SEC_EXCLUDE) != 0)
1860 shdr->sh_flags |= SHF_EXCLUDE;
1861
1862 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1863 shdr->sh_type = SHT_ORDERED;
1864
1865 return TRUE;
1866}
1867
1868/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1869 need to bump up the number of section headers. */
1870
1871static int
1872ppc_elf_additional_program_headers (bfd *abfd)
1873{
1874 asection *s;
1875 int ret = 0;
d1c6de6f 1876
25dbc73a
AM
1877 s = bfd_get_section_by_name (abfd, ".sbss2");
1878 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1879 ++ret;
d1c6de6f 1880
25dbc73a
AM
1881 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1882 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1883 ++ret;
deaaf2f3 1884
25dbc73a
AM
1885 return ret;
1886}
deaaf2f3 1887
25dbc73a
AM
1888/* Add extra PPC sections -- Note, for now, make .sbss2 and
1889 .PPC.EMB.sbss0 a normal section, and not a bss section so
1890 that the linker doesn't crater when trying to make more than
1891 2 sections. */
e656e369 1892
b35d266b 1893static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958
L
1894{
1895 { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
25dbc73a 1896 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
25dbc73a 1897 { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
551b43fd
AM
1898 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1899 { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
7f4d3958 1900 { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
25dbc73a 1901 { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
25dbc73a 1902 { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
551b43fd
AM
1903 { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
1904 { NULL, 0, 0, 0, 0 }
7f4d3958
L
1905};
1906
551b43fd
AM
1907/* This is what we want for new plt/got. */
1908static struct bfd_elf_special_section ppc_alt_plt =
1909 { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC };
1910
1911static const struct bfd_elf_special_section *
1912ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 1913{
b35d266b 1914 const struct bfd_elf_special_section *ssect;
551b43fd
AM
1915
1916 /* See if this is one of the special sections. */
1917 if (sec->name == NULL)
1918 return NULL;
1919
1920 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
1921 sec->use_rela_p);
1922 if (ssect != NULL)
1923 {
1924 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
1925 ssect = &ppc_alt_plt;
1926 return ssect;
1927 }
1928
1929 return _bfd_elf_get_sec_type_attr (abfd, sec);
1930}
25dbc73a
AM
1931\f
1932/* Very simple linked list structure for recording apuinfo values. */
1933typedef struct apuinfo_list
1934{
1935 struct apuinfo_list *next;
1936 unsigned long value;
1937}
1938apuinfo_list;
e656e369 1939
25dbc73a 1940static apuinfo_list *head;
deaaf2f3 1941
deaaf2f3 1942
25dbc73a
AM
1943static void
1944apuinfo_list_init (void)
1945{
1946 head = NULL;
1947}
9abc968f 1948
25dbc73a
AM
1949static void
1950apuinfo_list_add (unsigned long value)
1951{
1952 apuinfo_list *entry = head;
deaaf2f3 1953
25dbc73a
AM
1954 while (entry != NULL)
1955 {
1956 if (entry->value == value)
1957 return;
1958 entry = entry->next;
1959 }
b4a38de6 1960
25dbc73a
AM
1961 entry = bfd_malloc (sizeof (* entry));
1962 if (entry == NULL)
1963 return;
e656e369 1964
25dbc73a
AM
1965 entry->value = value;
1966 entry->next = head;
1967 head = entry;
1968}
9abc968f 1969
25dbc73a
AM
1970static unsigned
1971apuinfo_list_length (void)
1972{
1973 apuinfo_list *entry;
1974 unsigned long count;
9abc968f 1975
25dbc73a
AM
1976 for (entry = head, count = 0;
1977 entry;
1978 entry = entry->next)
1979 ++ count;
e656e369 1980
25dbc73a
AM
1981 return count;
1982}
eea6121a 1983
25dbc73a
AM
1984static inline unsigned long
1985apuinfo_list_element (unsigned long number)
1986{
1987 apuinfo_list * entry;
e656e369 1988
25dbc73a
AM
1989 for (entry = head;
1990 entry && number --;
1991 entry = entry->next)
1992 ;
252b5132 1993
25dbc73a
AM
1994 return entry ? entry->value : 0;
1995}
1996
1997static void
1998apuinfo_list_finish (void)
1999{
2000 apuinfo_list *entry;
2001
2002 for (entry = head; entry;)
252b5132 2003 {
25dbc73a
AM
2004 apuinfo_list *next = entry->next;
2005 free (entry);
2006 entry = next;
2007 }
9abc968f 2008
25dbc73a
AM
2009 head = NULL;
2010}
9abc968f 2011
25dbc73a
AM
2012#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2013#define APUINFO_LABEL "APUinfo"
9abc968f 2014
25dbc73a
AM
2015/* Scan the input BFDs and create a linked list of
2016 the APUinfo values that will need to be emitted. */
9abc968f 2017
25dbc73a
AM
2018static void
2019ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2020{
2021 bfd *ibfd;
2022 asection *asec;
2023 char *buffer;
2024 unsigned num_input_sections;
2025 bfd_size_type output_section_size;
2026 unsigned i;
2027 unsigned num_entries;
2028 unsigned long offset;
2029 unsigned long length;
2030 const char *error_message = NULL;
9abc968f 2031
25dbc73a
AM
2032 if (link_info == NULL)
2033 return;
9abc968f 2034
25dbc73a
AM
2035 /* Scan the input bfds, looking for apuinfo sections. */
2036 num_input_sections = 0;
2037 output_section_size = 0;
252b5132 2038
25dbc73a 2039 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2040 {
25dbc73a
AM
2041 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2042 if (asec)
252b5132 2043 {
25dbc73a
AM
2044 ++ num_input_sections;
2045 output_section_size += asec->size;
252b5132 2046 }
252b5132
RH
2047 }
2048
25dbc73a
AM
2049 /* We need at least one input sections
2050 in order to make merging worthwhile. */
2051 if (num_input_sections < 1)
2052 return;
deaaf2f3 2053
25dbc73a
AM
2054 /* Just make sure that the output section exists as well. */
2055 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2056 if (asec == NULL)
2057 return;
252b5132 2058
25dbc73a
AM
2059 /* Allocate a buffer for the contents of the input sections. */
2060 buffer = bfd_malloc (output_section_size);
2061 if (buffer == NULL)
2062 return;
252b5132 2063
25dbc73a
AM
2064 offset = 0;
2065 apuinfo_list_init ();
252b5132 2066
25dbc73a
AM
2067 /* Read in the input sections contents. */
2068 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2069 {
25dbc73a
AM
2070 unsigned long datum;
2071 char *ptr;
252b5132 2072
25dbc73a
AM
2073 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2074 if (asec == NULL)
2075 continue;
252b5132 2076
25dbc73a
AM
2077 length = asec->size;
2078 if (length < 24)
2079 {
2080 error_message = _("corrupt or empty %s section in %B");
2081 goto fail;
2082 }
252b5132 2083
25dbc73a
AM
2084 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2085 || (bfd_bread (buffer + offset, length, ibfd) != length))
2086 {
2087 error_message = _("unable to read in %s section from %B");
2088 goto fail;
2089 }
252b5132 2090
25dbc73a
AM
2091 /* Process the contents of the section. */
2092 ptr = buffer + offset;
2093 error_message = _("corrupt %s section in %B");
252b5132 2094
25dbc73a
AM
2095 /* Verify the contents of the header. Note - we have to
2096 extract the values this way in order to allow for a
2097 host whose endian-ness is different from the target. */
2098 datum = bfd_get_32 (ibfd, ptr);
2099 if (datum != sizeof APUINFO_LABEL)
2100 goto fail;
252b5132 2101
25dbc73a
AM
2102 datum = bfd_get_32 (ibfd, ptr + 8);
2103 if (datum != 0x2)
2104 goto fail;
252b5132 2105
25dbc73a
AM
2106 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2107 goto fail;
252b5132 2108
25dbc73a
AM
2109 /* Get the number of bytes used for apuinfo entries. */
2110 datum = bfd_get_32 (ibfd, ptr + 4);
2111 if (datum + 20 != length)
2112 goto fail;
2113
2114 /* Make sure that we do not run off the end of the section. */
2115 if (offset + length > output_section_size)
2116 goto fail;
2117
2118 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2119 for (i = 0; i < datum; i += 4)
2120 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2121
2122 /* Update the offset. */
2123 offset += length;
252b5132
RH
2124 }
2125
25dbc73a 2126 error_message = NULL;
252b5132 2127
25dbc73a
AM
2128 /* Compute the size of the output section. */
2129 num_entries = apuinfo_list_length ();
2130 output_section_size = 20 + num_entries * 4;
252b5132 2131
25dbc73a
AM
2132 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2133
2134 if (! bfd_set_section_size (abfd, asec, output_section_size))
2135 ibfd = abfd,
2136 error_message = _("warning: unable to set size of %s section in %B");
2137
2138 fail:
2139 free (buffer);
2140
2141 if (error_message)
2142 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2143}
252b5132 2144
25dbc73a
AM
2145/* Prevent the output section from accumulating the input sections'
2146 contents. We have already stored this in our linked list structure. */
252b5132 2147
25dbc73a
AM
2148static bfd_boolean
2149ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2150 asection *asec,
2151 bfd_byte *contents ATTRIBUTE_UNUSED)
2152{
2153 return (apuinfo_list_length ()
2154 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
252b5132
RH
2155}
2156
25dbc73a
AM
2157/* Finally we can generate the output section. */
2158
2159static void
2160ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2161{
25dbc73a
AM
2162 bfd_byte *buffer;
2163 asection *asec;
2164 unsigned i;
2165 unsigned num_entries;
2166 bfd_size_type length;
7619e7c7 2167
25dbc73a
AM
2168 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2169 if (asec == NULL)
2170 return;
2171
2172 if (apuinfo_list_length () == 0)
2173 return;
2174
2175 length = asec->size;
2176 if (length < 20)
2177 return;
2178
2179 buffer = bfd_malloc (length);
2180 if (buffer == NULL)
7619e7c7 2181 {
25dbc73a
AM
2182 (*_bfd_error_handler)
2183 (_("failed to allocate space for new APUinfo section."));
2184 return;
7619e7c7 2185 }
7619e7c7 2186
25dbc73a
AM
2187 /* Create the apuinfo header. */
2188 num_entries = apuinfo_list_length ();
2189 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2190 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2191 bfd_put_32 (abfd, 0x2, buffer + 8);
2192 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2193
25dbc73a
AM
2194 length = 20;
2195 for (i = 0; i < num_entries; i++)
feee612b 2196 {
25dbc73a
AM
2197 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2198 length += 4;
feee612b 2199 }
feee612b 2200
25dbc73a
AM
2201 if (length != asec->size)
2202 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2203
25dbc73a
AM
2204 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2205 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2206
25dbc73a
AM
2207 free (buffer);
2208
2209 apuinfo_list_finish ();
252b5132 2210}
25dbc73a
AM
2211\f
2212/* The following functions are specific to the ELF linker, while
2213 functions above are used generally. They appear in this file more
2214 or less in the order in which they are called. eg.
2215 ppc_elf_check_relocs is called early in the link process,
2216 ppc_elf_finish_dynamic_sections is one of the last functions
2217 called. */
252b5132 2218
25dbc73a
AM
2219/* The PPC linker needs to keep track of the number of relocs that it
2220 decides to copy as dynamic relocs in check_relocs for each symbol.
2221 This is so that it can later discard them if they are found to be
2222 unnecessary. We store the information in a field extending the
2223 regular ELF linker hash table. */
ae9a127f 2224
25dbc73a 2225struct ppc_elf_dyn_relocs
252b5132 2226{
25dbc73a 2227 struct ppc_elf_dyn_relocs *next;
252b5132 2228
25dbc73a
AM
2229 /* The input section of the reloc. */
2230 asection *sec;
252b5132 2231
25dbc73a
AM
2232 /* Total number of relocs copied for the input section. */
2233 bfd_size_type count;
252b5132 2234
25dbc73a
AM
2235 /* Number of pc-relative relocs copied for the input section. */
2236 bfd_size_type pc_count;
2237};
252b5132 2238
a6aa5195
AM
2239/* Track PLT entries needed for a given symbol. We might need more
2240 than one glink entry per symbol. */
2241struct plt_entry
2242{
2243 struct plt_entry *next;
2244
2245 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2246 This field stores the offset into .got2 used to initialise the
2247 GOT pointer reg. It will always be at least 32768 (and for
2248 current gcc this is the only offset used). */
2249 bfd_vma addend;
2250
2251 /* The .got2 section. */
2252 asection *sec;
2253
2254 /* PLT refcount or offset. */
2255 union
2256 {
2257 bfd_signed_vma refcount;
2258 bfd_vma offset;
2259 } plt;
2260
2261 /* .glink stub offset. */
2262 bfd_vma glink_offset;
2263};
2264
25dbc73a
AM
2265/* Of those relocs that might be copied as dynamic relocs, this macro
2266 selects those that must be copied when linking a shared library,
2267 even when the symbol is local. */
252b5132 2268
25dbc73a
AM
2269#define MUST_BE_DYN_RELOC(RTYPE) \
2270 ((RTYPE) != R_PPC_REL24 \
2271 && (RTYPE) != R_PPC_REL14 \
2272 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2273 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2274 && (RTYPE) != R_PPC_REL32)
252b5132 2275
25dbc73a
AM
2276/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2277 copying dynamic variables from a shared lib into an app's dynbss
2278 section, and instead use a dynamic relocation to point into the
2279 shared lib. */
2280#define ELIMINATE_COPY_RELOCS 1
252b5132 2281
25dbc73a 2282/* PPC ELF linker hash entry. */
252b5132 2283
25dbc73a
AM
2284struct ppc_elf_link_hash_entry
2285{
2286 struct elf_link_hash_entry elf;
252b5132 2287
25dbc73a
AM
2288 /* If this symbol is used in the linker created sections, the processor
2289 specific backend uses this field to map the field into the offset
2290 from the beginning of the section. */
2291 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 2292
25dbc73a
AM
2293 /* Track dynamic relocs copied for this symbol. */
2294 struct ppc_elf_dyn_relocs *dyn_relocs;
252b5132 2295
25dbc73a
AM
2296 /* Contexts in which symbol is used in the GOT (or TOC).
2297 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2298 corresponding relocs are encountered during check_relocs.
2299 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2300 indicate the corresponding GOT entry type is not needed. */
2301#define TLS_GD 1 /* GD reloc. */
2302#define TLS_LD 2 /* LD reloc. */
2303#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2304#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2305#define TLS_TLS 16 /* Any TLS reloc. */
2306#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2307 char tls_mask;
4dc4a9a5
DJ
2308
2309 /* Nonzero if we have seen a small data relocation referring to this
2310 symbol. */
2311 unsigned char has_sda_refs;
25dbc73a 2312};
252b5132 2313
25dbc73a
AM
2314#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2315
2316/* PPC ELF linker hash table. */
2317
2318struct ppc_elf_link_hash_table
2319{
2320 struct elf_link_hash_table elf;
2321
2322 /* Short-cuts to get to dynamic linker sections. */
2323 asection *got;
2324 asection *relgot;
d7128ce4 2325 asection *glink;
25dbc73a
AM
2326 asection *plt;
2327 asection *relplt;
2328 asection *dynbss;
2329 asection *relbss;
2330 asection *dynsbss;
2331 asection *relsbss;
c9a2f333 2332 elf_linker_section_t sdata[2];
25dbc73a
AM
2333 asection *sbss;
2334
2335 /* Shortcut to .__tls_get_addr. */
2336 struct elf_link_hash_entry *tls_get_addr;
252b5132 2337
25dbc73a
AM
2338 /* TLS local dynamic got entry handling. */
2339 union {
2340 bfd_signed_vma refcount;
2341 bfd_vma offset;
2342 } tlsld_got;
252b5132 2343
d7128ce4
AM
2344 /* Offset of PltResolve function in glink. */
2345 bfd_vma glink_pltresolve;
2346
3b36f7e6
AM
2347 /* Size of reserved GOT entries. */
2348 unsigned int got_header_size;
2349 /* Non-zero if allocating the header left a gap. */
2350 unsigned int got_gap;
2351
d7128ce4
AM
2352 /* Whether to use new plt/got layout or not. */
2353 unsigned int new_plt:1;
2354 unsigned int old_plt:1;
2355
25dbc73a
AM
2356 /* Small local sym to section mapping cache. */
2357 struct sym_sec_cache sym_sec;
9d8504b1
PB
2358
2359 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2360 asection *srelplt2;
2361
2362 /* The .got.plt section (VxWorks only)*/
2363 asection *sgotplt;
2364
2365 /* Short-cuts to frequently used symbols on VxWorks targets. */
2366 struct elf_link_hash_entry *hgot, *hplt;
2367
2368 /* True if the target system is VxWorks. */
2369 int is_vxworks;
2370
2371 /* The size of PLT entries. */
2372 int plt_entry_size;
2373 /* The distance between adjacent PLT slots. */
2374 int plt_slot_size;
2375 /* The size of the first PLT entry. */
2376 int plt_initial_entry_size;
25dbc73a 2377};
252b5132 2378
25dbc73a 2379/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 2380
25dbc73a
AM
2381#define ppc_elf_hash_table(p) \
2382 ((struct ppc_elf_link_hash_table *) (p)->hash)
252b5132 2383
25dbc73a 2384/* Create an entry in a PPC ELF linker hash table. */
252b5132 2385
25dbc73a
AM
2386static struct bfd_hash_entry *
2387ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2388 struct bfd_hash_table *table,
2389 const char *string)
252b5132 2390{
25dbc73a
AM
2391 /* Allocate the structure if it has not already been allocated by a
2392 subclass. */
2393 if (entry == NULL)
2394 {
2395 entry = bfd_hash_allocate (table,
2396 sizeof (struct ppc_elf_link_hash_entry));
2397 if (entry == NULL)
2398 return entry;
2399 }
252b5132 2400
25dbc73a
AM
2401 /* Call the allocation method of the superclass. */
2402 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2403 if (entry != NULL)
2404 {
2405 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2406 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2407 ppc_elf_hash_entry (entry)->tls_mask = 0;
2408 }
252b5132 2409
25dbc73a 2410 return entry;
252b5132 2411}
3dab13f6 2412
25dbc73a 2413/* Create a PPC ELF linker hash table. */
3dab13f6 2414
25dbc73a
AM
2415static struct bfd_link_hash_table *
2416ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 2417{
25dbc73a 2418 struct ppc_elf_link_hash_table *ret;
3dab13f6 2419
25dbc73a
AM
2420 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2421 if (ret == NULL)
2422 return NULL;
3dab13f6 2423
25dbc73a
AM
2424 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
2425 ppc_elf_link_hash_newfunc))
3dab13f6 2426 {
25dbc73a
AM
2427 free (ret);
2428 return NULL;
2429 }
58111eb7 2430
a6aa5195
AM
2431 ret->elf.init_plt_refcount.refcount = 0;
2432 ret->elf.init_plt_refcount.glist = NULL;
2433 ret->elf.init_plt_offset.offset = 0;
2434 ret->elf.init_plt_offset.glist = NULL;
2435
c9a2f333
AM
2436 ret->sdata[0].name = ".sdata";
2437 ret->sdata[0].sym_name = "_SDA_BASE_";
2438 ret->sdata[0].bss_name = ".sbss";
2439
2440 ret->sdata[1].name = ".sdata2";
2441 ret->sdata[1].sym_name = "_SDA2_BASE_";
2442 ret->sdata[1].bss_name = ".sbss2";
2443
9d8504b1
PB
2444 ret->plt_entry_size = 12;
2445 ret->plt_slot_size = 8;
2446 ret->plt_initial_entry_size = 72;
2447
2448 ret->is_vxworks = 0;
2449
25dbc73a
AM
2450 return &ret->elf.root;
2451}
3dab13f6 2452
9d8504b1 2453/* Create .got and the related sections. */
3dab13f6 2454
25dbc73a
AM
2455static bfd_boolean
2456ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2457{
2458 struct ppc_elf_link_hash_table *htab;
2459 asection *s;
2460 flagword flags;
3dab13f6 2461
25dbc73a
AM
2462 if (!_bfd_elf_create_got_section (abfd, info))
2463 return FALSE;
3dab13f6 2464
25dbc73a
AM
2465 htab = ppc_elf_hash_table (info);
2466 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2467 if (s == NULL)
2468 abort ();
3dab13f6 2469
9d8504b1
PB
2470 if (htab->is_vxworks)
2471 {
2472 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2473 if (!htab->sgotplt)
2474 abort ();
2475 }
2476 else
2477 {
2478 /* The powerpc .got has a blrl instruction in it. Mark it
2479 executable. */
2480 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2481 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2482 if (!bfd_set_section_flags (abfd, s, flags))
2483 return FALSE;
2484 }
3dab13f6 2485
3b36f7e6
AM
2486 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2487 | SEC_LINKER_CREATED | SEC_READONLY);
2488 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
25dbc73a 2489 if (!htab->relgot
25dbc73a
AM
2490 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2491 return FALSE;
3dab13f6 2492
25dbc73a
AM
2493 return TRUE;
2494}
3dab13f6 2495
25dbc73a
AM
2496/* We have to create .dynsbss and .rela.sbss here so that they get mapped
2497 to output sections (just like _bfd_elf_create_dynamic_sections has
2498 to create .dynbss and .rela.bss). */
3dab13f6 2499
25dbc73a
AM
2500static bfd_boolean
2501ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2502{
2503 struct ppc_elf_link_hash_table *htab;
2504 asection *s;
2505 flagword flags;
3dab13f6 2506
25dbc73a 2507 htab = ppc_elf_hash_table (info);
3dab13f6 2508
25dbc73a
AM
2509 if (htab->got == NULL
2510 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
2511 return FALSE;
2512
25dbc73a
AM
2513 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2514 return FALSE;
3dab13f6 2515
d7128ce4
AM
2516 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2517 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2518
2519 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2520 htab->glink = s;
2521 if (s == NULL
2522 || !bfd_set_section_alignment (abfd, s, 4))
2523 return FALSE;
3dab13f6 2524
25dbc73a 2525 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
3b36f7e6
AM
2526 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2527 SEC_ALLOC | SEC_LINKER_CREATED);
2528 htab->dynsbss = s;
3496cb2a 2529 if (s == NULL)
25dbc73a 2530 return FALSE;
3dab13f6 2531
25dbc73a
AM
2532 if (! info->shared)
2533 {
2534 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
d7128ce4 2535 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 2536 htab->relsbss = s;
25dbc73a 2537 if (s == NULL
25dbc73a
AM
2538 || ! bfd_set_section_alignment (abfd, s, 2))
2539 return FALSE;
2540 }
3dab13f6 2541
9d8504b1
PB
2542 /* Create the section for VxWorks static plt relocations. */
2543 if (htab->is_vxworks && !info->shared)
2544 {
2545 s = bfd_make_section (abfd, ".rela.plt.unloaded");
2546 flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_READONLY
2547 | SEC_LINKER_CREATED);
2548 if (s == NULL
2549 || ! bfd_set_section_flags (abfd, s, flags)
2550 || ! bfd_set_section_alignment (abfd, s,
2551 get_elf_backend_data (abfd)->s->log_file_align))
2552 return FALSE;
2553 htab->srelplt2 = s;
2554 }
2555
25dbc73a
AM
2556 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2557 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2558 if (s == NULL)
2559 abort ();
3dab13f6 2560
3b36f7e6 2561 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
25dbc73a
AM
2562 return bfd_set_section_flags (abfd, s, flags);
2563}
3dab13f6 2564
25dbc73a 2565/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 2566
25dbc73a 2567static void
a6aa5195 2568ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
25dbc73a
AM
2569 struct elf_link_hash_entry *dir,
2570 struct elf_link_hash_entry *ind)
2571{
2572 struct ppc_elf_link_hash_entry *edir, *eind;
a6aa5195 2573 bfd_signed_vma tmp;
3dab13f6 2574
25dbc73a
AM
2575 edir = (struct ppc_elf_link_hash_entry *) dir;
2576 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 2577
25dbc73a
AM
2578 if (eind->dyn_relocs != NULL)
2579 {
2580 if (edir->dyn_relocs != NULL)
3dab13f6 2581 {
25dbc73a
AM
2582 struct ppc_elf_dyn_relocs **pp;
2583 struct ppc_elf_dyn_relocs *p;
3dab13f6 2584
25dbc73a
AM
2585 if (ind->root.type == bfd_link_hash_indirect)
2586 abort ();
2587
2588 /* Add reloc counts against the weak sym to the strong sym
2589 list. Merge any entries against the same section. */
2590 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 2591 {
25dbc73a
AM
2592 struct ppc_elf_dyn_relocs *q;
2593
2594 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2595 if (q->sec == p->sec)
2596 {
2597 q->pc_count += p->pc_count;
2598 q->count += p->count;
2599 *pp = p->next;
2600 break;
2601 }
2602 if (q == NULL)
2603 pp = &p->next;
3dab13f6 2604 }
25dbc73a 2605 *pp = edir->dyn_relocs;
3dab13f6 2606 }
25dbc73a
AM
2607
2608 edir->dyn_relocs = eind->dyn_relocs;
2609 eind->dyn_relocs = NULL;
3dab13f6 2610 }
3dab13f6 2611
25dbc73a 2612 edir->tls_mask |= eind->tls_mask;
4dc4a9a5 2613 edir->has_sda_refs |= eind->has_sda_refs;
3dab13f6 2614
a6aa5195
AM
2615 /* If called to transfer flags for a weakdef during processing
2616 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2617 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2618 if (!(ELIMINATE_COPY_RELOCS
2619 && eind->elf.root.type != bfd_link_hash_indirect
2620 && edir->elf.dynamic_adjusted))
2621 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2622
2623 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2624 edir->elf.ref_regular |= eind->elf.ref_regular;
2625 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2626 edir->elf.needs_plt |= eind->elf.needs_plt;
2627
2628 /* If we were called to copy over info for a weak sym, that's all. */
2629 if (eind->elf.root.type != bfd_link_hash_indirect)
2630 return;
2631
2632 /* Copy over the GOT refcount entries that we may have already seen to
2633 the symbol which just became indirect. */
2634 tmp = edir->elf.got.refcount;
2635 if (tmp < 1)
2636 {
2637 edir->elf.got.refcount = eind->elf.got.refcount;
2638 eind->elf.got.refcount = tmp;
2639 }
2640 else
2641 BFD_ASSERT (eind->elf.got.refcount < 1);
2642
2643 /* And plt entries. */
2644 if (eind->elf.plt.plist != NULL)
2645 {
2646 if (edir->elf.plt.plist != NULL)
2647 {
2648 struct plt_entry **entp;
2649 struct plt_entry *ent;
2650
2651 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2652 {
2653 struct plt_entry *dent;
2654
2655 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2656 if (dent->sec == ent->sec && dent->addend == ent->addend)
2657 {
2658 dent->plt.refcount += ent->plt.refcount;
2659 *entp = ent->next;
2660 break;
2661 }
2662 if (dent == NULL)
2663 entp = &ent->next;
2664 }
2665 *entp = edir->elf.plt.plist;
2666 }
2667
2668 edir->elf.plt.plist = eind->elf.plt.plist;
2669 eind->elf.plt.plist = NULL;
2670 }
2671
2672 if (edir->elf.dynindx == -1)
25dbc73a 2673 {
a6aa5195
AM
2674 edir->elf.dynindx = eind->elf.dynindx;
2675 edir->elf.dynstr_index = eind->elf.dynstr_index;
2676 eind->elf.dynindx = -1;
2677 eind->elf.dynstr_index = 0;
25dbc73a
AM
2678 }
2679 else
a6aa5195 2680 BFD_ASSERT (eind->elf.dynindx == -1);
25dbc73a 2681}
3dab13f6 2682
8853c3d3
AM
2683/* Return 1 if target is one of ours. */
2684
2685static bfd_boolean
2686is_ppc_elf_target (const struct bfd_target *targ)
2687{
2688 extern const bfd_target bfd_elf32_powerpc_vec;
2689 extern const bfd_target bfd_elf32_powerpcle_vec;
2690
2691 return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec;
2692}
2693
25dbc73a
AM
2694/* Hook called by the linker routine which adds symbols from an object
2695 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 2696
25dbc73a
AM
2697static bfd_boolean
2698ppc_elf_add_symbol_hook (bfd *abfd,
2699 struct bfd_link_info *info,
2700 Elf_Internal_Sym *sym,
2701 const char **namep ATTRIBUTE_UNUSED,
2702 flagword *flagsp ATTRIBUTE_UNUSED,
2703 asection **secp,
2704 bfd_vma *valp)
2705{
2706 if (sym->st_shndx == SHN_COMMON
2707 && !info->relocatable
2708 && sym->st_size <= elf_gp_size (abfd)
d2663f46 2709 && is_ppc_elf_target (info->hash->creator))
25dbc73a
AM
2710 {
2711 /* Common symbols less than or equal to -G nn bytes are automatically
2712 put into .sbss. */
2713 struct ppc_elf_link_hash_table *htab;
3dab13f6 2714
25dbc73a
AM
2715 htab = ppc_elf_hash_table (info);
2716 if (htab->sbss == NULL)
2717 {
644285ef 2718 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 2719
644285ef
AM
2720 if (!htab->elf.dynobj)
2721 htab->elf.dynobj = abfd;
2722
3496cb2a
L
2723 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2724 ".sbss",
2725 flags);
2726 if (htab->sbss == NULL)
25dbc73a 2727 return FALSE;
3dab13f6 2728 }
3dab13f6 2729
25dbc73a
AM
2730 *secp = htab->sbss;
2731 *valp = sym->st_size;
2732 }
3dab13f6 2733
25dbc73a 2734 return TRUE;
3dab13f6
AM
2735}
2736\f
c9a2f333 2737/* Create a special linker section. */
25dbc73a 2738
c9a2f333 2739static bfd_boolean
55fd94b0
AM
2740ppc_elf_create_linker_section (bfd *abfd,
2741 struct bfd_link_info *info,
c9a2f333
AM
2742 flagword flags,
2743 elf_linker_section_t *lsect)
252b5132 2744{
58111eb7 2745 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 2746 asection *s;
58111eb7 2747
c9a2f333
AM
2748 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2749 | SEC_LINKER_CREATED);
58111eb7
AM
2750
2751 /* Record the first bfd that needs the special sections. */
2752 if (!htab->elf.dynobj)
2753 htab->elf.dynobj = abfd;
2754
3496cb2a
L
2755 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2756 lsect->name,
2757 flags);
76750a2f 2758 if (s == NULL
76750a2f 2759 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 2760 return FALSE;
76750a2f 2761 lsect->section = s;
58111eb7 2762
c9a2f333 2763 return TRUE;
252b5132 2764}
252b5132 2765
25dbc73a
AM
2766/* Find a linker generated pointer with a given addend and type. */
2767
2768static elf_linker_section_pointers_t *
2769elf_find_pointer_linker_section
2770 (elf_linker_section_pointers_t *linker_pointers,
2771 bfd_vma addend,
2772 elf_linker_section_t *lsect)
252b5132 2773{
25dbc73a
AM
2774 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2775 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2776 return linker_pointers;
252b5132 2777
25dbc73a
AM
2778 return NULL;
2779}
2780
2781/* Allocate a pointer to live in a linker created section. */
2782
2783static bfd_boolean
2784elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM
2785 elf_linker_section_t *lsect,
2786 struct elf_link_hash_entry *h,
2787 const Elf_Internal_Rela *rel)
2788{
2789 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2790 elf_linker_section_pointers_t *linker_section_ptr;
2791 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2792 bfd_size_type amt;
2793
2794 BFD_ASSERT (lsect != NULL);
2795
2796 /* Is this a global symbol? */
2797 if (h != NULL)
2798 {
2799 struct ppc_elf_link_hash_entry *eh;
2800
2801 /* Has this symbol already been allocated? If so, our work is done. */
2802 eh = (struct ppc_elf_link_hash_entry *) h;
2803 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2804 rel->r_addend,
2805 lsect))
2806 return TRUE;
2807
2808 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
2809 }
2810 else
2811 {
2812 /* Allocation of a pointer to a local symbol. */
2813 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2814
2815 /* Allocate a table to hold the local symbols if first time. */
2816 if (!ptr)
2817 {
2818 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2819
2820 amt = num_symbols;
2821 amt *= sizeof (elf_linker_section_pointers_t *);
2822 ptr = bfd_zalloc (abfd, amt);
2823
2824 if (!ptr)
2825 return FALSE;
2826
2827 elf_local_ptr_offsets (abfd) = ptr;
2828 }
2829
2830 /* Has this symbol already been allocated? If so, our work is done. */
2831 if (elf_find_pointer_linker_section (ptr[r_symndx],
2832 rel->r_addend,
2833 lsect))
2834 return TRUE;
252b5132 2835
25dbc73a 2836 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 2837 }
41fcb14e 2838
25dbc73a
AM
2839 /* Allocate space for a pointer in the linker section, and allocate
2840 a new pointer record from internal memory. */
2841 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2842 amt = sizeof (elf_linker_section_pointers_t);
2843 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 2844
25dbc73a 2845 if (!linker_section_ptr)
7619e7c7 2846 return FALSE;
41fcb14e 2847
25dbc73a
AM
2848 linker_section_ptr->next = *ptr_linker_section_ptr;
2849 linker_section_ptr->addend = rel->r_addend;
2850 linker_section_ptr->lsect = lsect;
25dbc73a 2851 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 2852
25dbc73a
AM
2853 linker_section_ptr->offset = lsect->section->size;
2854 lsect->section->size += 4;
7619e7c7 2855
25dbc73a
AM
2856#ifdef DEBUG
2857 fprintf (stderr,
2858 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2859 lsect->name, (long) linker_section_ptr->offset,
2860 (long) lsect->section->size);
2861#endif
7619e7c7
AM
2862
2863 return TRUE;
41fcb14e
AM
2864}
2865
b34976b6 2866static bfd_boolean
25dbc73a
AM
2867update_local_sym_info (bfd *abfd,
2868 Elf_Internal_Shdr *symtab_hdr,
2869 unsigned long r_symndx,
2870 int tls_type)
252b5132 2871{
25dbc73a
AM
2872 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2873 char *local_got_tls_masks;
252b5132 2874
25dbc73a 2875 if (local_got_refcounts == NULL)
252b5132 2876 {
25dbc73a
AM
2877 bfd_size_type size = symtab_hdr->sh_info;
2878
2879 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2880 local_got_refcounts = bfd_zalloc (abfd, size);
2881 if (local_got_refcounts == NULL)
b34976b6 2882 return FALSE;
25dbc73a 2883 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 2884 }
41fcb14e 2885
25dbc73a
AM
2886 local_got_refcounts[r_symndx] += 1;
2887 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2888 local_got_tls_masks[r_symndx] |= tls_type;
2889 return TRUE;
2890}
41fcb14e 2891
a6aa5195
AM
2892static bfd_boolean
2893update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2894 asection *sec, bfd_vma addend)
2895{
2896 struct plt_entry *ent;
2897
2898 if (addend < 32768)
2899 sec = NULL;
2900 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2901 if (ent->sec == sec && ent->addend == addend)
2902 break;
2903 if (ent == NULL)
2904 {
2905 bfd_size_type amt = sizeof (*ent);
2906 ent = bfd_alloc (abfd, amt);
2907 if (ent == NULL)
2908 return FALSE;
2909 ent->next = h->plt.plist;
2910 ent->sec = sec;
2911 ent->addend = addend;
2912 ent->plt.refcount = 0;
2913 h->plt.plist = ent;
2914 }
2915 ent->plt.refcount += 1;
2916 return TRUE;
2917}
2918
2919static struct plt_entry *
2920find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
2921{
2922 struct plt_entry *ent;
2923
2924 if (addend < 32768)
2925 sec = NULL;
2926 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2927 if (ent->sec == sec && ent->addend == addend)
2928 break;
2929 return ent;
2930}
2931
25dbc73a
AM
2932static void
2933bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2934{
2935 (*_bfd_error_handler)
2936 (_("%B: relocation %s cannot be used when making a shared object"),
2937 abfd,
2938 ppc_elf_howto_table[r_type]->name);
2939 bfd_set_error (bfd_error_bad_value);
252b5132
RH
2940}
2941
25dbc73a
AM
2942/* Look through the relocs for a section during the first phase, and
2943 allocate space in the global offset table or procedure linkage
2944 table. */
252b5132 2945
b34976b6 2946static bfd_boolean
25dbc73a
AM
2947ppc_elf_check_relocs (bfd *abfd,
2948 struct bfd_link_info *info,
2949 asection *sec,
2950 const Elf_Internal_Rela *relocs)
252b5132 2951{
7619e7c7 2952 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
2953 Elf_Internal_Shdr *symtab_hdr;
2954 struct elf_link_hash_entry **sym_hashes;
2955 const Elf_Internal_Rela *rel;
2956 const Elf_Internal_Rela *rel_end;
a6aa5195 2957 asection *got2, *sreloc;
25dbc73a
AM
2958
2959 if (info->relocatable)
2960 return TRUE;
252b5132 2961
c87b5a93
AM
2962 /* Don't do anything special with non-loaded, non-alloced sections.
2963 In particular, any relocs in such sections should not affect GOT
2964 and PLT reference counting (ie. we don't allow them to create GOT
2965 or PLT entries), there's no possibility or desire to optimize TLS
2966 relocs, and there's not much point in propagating relocs to shared
2967 libs that the dynamic linker won't relocate. */
2968 if ((sec->flags & SEC_ALLOC) == 0)
2969 return TRUE;
2970
252b5132 2971#ifdef DEBUG
25dbc73a
AM
2972 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2973 sec, abfd);
252b5132
RH
2974#endif
2975
25dbc73a
AM
2976 /* Initialize howto table if not already done. */
2977 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2978 ppc_elf_howto_init ();
2979
7619e7c7 2980 htab = ppc_elf_hash_table (info);
25dbc73a
AM
2981 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2982 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 2983 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
2984 sreloc = NULL;
2985
2986 rel_end = relocs + sec->reloc_count;
2987 for (rel = relocs; rel < rel_end; rel++)
2988 {
2989 unsigned long r_symndx;
2990 enum elf_ppc_reloc_type r_type;
2991 struct elf_link_hash_entry *h;
2992 int tls_type = 0;
2993
2994 r_symndx = ELF32_R_SYM (rel->r_info);
2995 if (r_symndx < symtab_hdr->sh_info)
2996 h = NULL;
2997 else
973a3492
L
2998 {
2999 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3000 while (h->root.type == bfd_link_hash_indirect
3001 || h->root.type == bfd_link_hash_warning)
3002 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3003 }
25dbc73a
AM
3004
3005 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3006 This shows up in particular in an R_PPC_ADDR32 in the eabi
3007 startup code. */
3b36f7e6
AM
3008 if (h != NULL
3009 && htab->got == NULL
3010 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3011 {
3b36f7e6
AM
3012 if (htab->elf.dynobj == NULL)
3013 htab->elf.dynobj = abfd;
3014 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3015 return FALSE;
3016 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3017 }
252b5132 3018
25dbc73a
AM
3019 r_type = ELF32_R_TYPE (rel->r_info);
3020 switch (r_type)
3021 {
3022 case R_PPC_GOT_TLSLD16:
3023 case R_PPC_GOT_TLSLD16_LO:
3024 case R_PPC_GOT_TLSLD16_HI:
3025 case R_PPC_GOT_TLSLD16_HA:
3026 htab->tlsld_got.refcount += 1;
3027 tls_type = TLS_TLS | TLS_LD;
3028 goto dogottls;
252b5132 3029
25dbc73a
AM
3030 case R_PPC_GOT_TLSGD16:
3031 case R_PPC_GOT_TLSGD16_LO:
3032 case R_PPC_GOT_TLSGD16_HI:
3033 case R_PPC_GOT_TLSGD16_HA:
3034 tls_type = TLS_TLS | TLS_GD;
3035 goto dogottls;
3036
3037 case R_PPC_GOT_TPREL16:
3038 case R_PPC_GOT_TPREL16_LO:
3039 case R_PPC_GOT_TPREL16_HI:
3040 case R_PPC_GOT_TPREL16_HA:
3041 if (info->shared)
3042 info->flags |= DF_STATIC_TLS;
3043 tls_type = TLS_TLS | TLS_TPREL;
3044 goto dogottls;
3045
3046 case R_PPC_GOT_DTPREL16:
3047 case R_PPC_GOT_DTPREL16_LO:
3048 case R_PPC_GOT_DTPREL16_HI:
3049 case R_PPC_GOT_DTPREL16_HA:
3050 tls_type = TLS_TLS | TLS_DTPREL;
3051 dogottls:
3052 sec->has_tls_reloc = 1;
3053 /* Fall thru */
252b5132 3054
25dbc73a
AM
3055 /* GOT16 relocations */
3056 case R_PPC_GOT16:
3057 case R_PPC_GOT16_LO:
3058 case R_PPC_GOT16_HI:
3059 case R_PPC_GOT16_HA:
3060 /* This symbol requires a global offset table entry. */
3061 if (htab->got == NULL)
3062 {
3063 if (htab->elf.dynobj == NULL)
3064 htab->elf.dynobj = abfd;
3065 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3066 return FALSE;
3067 }
3068 if (h != NULL)
3069 {
3070 h->got.refcount += 1;
3071 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3072 }
3073 else
3074 /* This is a global offset table entry for a local symbol. */
3075 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3076 return FALSE;
3077 break;
252b5132 3078
25dbc73a
AM
3079 /* Indirect .sdata relocation. */
3080 case R_PPC_EMB_SDAI16:
3081 if (info->shared)
3082 {
3083 bad_shared_reloc (abfd, r_type);
3084 return FALSE;
3085 }
c9a2f333
AM
3086 if (htab->sdata[0].section == NULL
3087 && !ppc_elf_create_linker_section (abfd, info, 0,
3088 &htab->sdata[0]))
3089 return FALSE;
76750a2f
AM
3090 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3091 h, rel))
25dbc73a
AM
3092 return FALSE;
3093 break;
252b5132 3094
25dbc73a
AM
3095 /* Indirect .sdata2 relocation. */
3096 case R_PPC_EMB_SDA2I16:
3097 if (info->shared)
3098 {
3099 bad_shared_reloc (abfd, r_type);
3100 return FALSE;
3101 }
c9a2f333
AM
3102 if (htab->sdata[1].section == NULL
3103 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3104 &htab->sdata[1]))
3105 return FALSE;
76750a2f
AM
3106 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3107 h, rel))
25dbc73a
AM
3108 return FALSE;
3109 break;
252b5132 3110
25dbc73a
AM
3111 case R_PPC_SDAREL16:
3112 case R_PPC_EMB_SDA2REL:
3113 case R_PPC_EMB_SDA21:
3114 case R_PPC_EMB_RELSDA:
3115 case R_PPC_EMB_NADDR32:
3116 case R_PPC_EMB_NADDR16:
3117 case R_PPC_EMB_NADDR16_LO:
3118 case R_PPC_EMB_NADDR16_HI:
3119 case R_PPC_EMB_NADDR16_HA:
3120 if (info->shared)
3121 {
3122 bad_shared_reloc (abfd, r_type);
3123 return FALSE;
3124 }
4dc4a9a5
DJ
3125 if (h != NULL)
3126 {
3127 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3128 /* We may need a copy reloc. */
3129 h->non_got_ref = TRUE;
3130 }
25dbc73a 3131 break;
252b5132 3132
25dbc73a
AM
3133 case R_PPC_PLT32:
3134 case R_PPC_PLTREL24:
3135 case R_PPC_PLTREL32:
3136 case R_PPC_PLT16_LO:
3137 case R_PPC_PLT16_HI:
3138 case R_PPC_PLT16_HA:
3139#ifdef DEBUG
3140 fprintf (stderr, "Reloc requires a PLT entry\n");
3141#endif
3142 /* This symbol requires a procedure linkage table entry. We
3143 actually build the entry in finish_dynamic_symbol,
3144 because this might be a case of linking PIC code without
3145 linking in any dynamic objects, in which case we don't
3146 need to generate a procedure linkage table after all. */
7619e7c7 3147
25dbc73a
AM
3148 if (h == NULL)
3149 {
3150 /* It does not make sense to have a procedure linkage
3151 table entry for a local symbol. */
3152 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3153 "local symbol"),
3154 abfd,
3155 sec,
3156 (long) rel->r_offset,
3157 ppc_elf_howto_table[r_type]->name);
3158 bfd_set_error (bfd_error_bad_value);
3159 return FALSE;
3160 }
a6aa5195
AM
3161 else
3162 {
3163 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
ee05f2fe 3164
a6aa5195
AM
3165 h->needs_plt = 1;
3166 if (!update_plt_info (abfd, h, got2, addend))
3167 return FALSE;
3168 }
25dbc73a 3169 break;
ee05f2fe 3170
25dbc73a
AM
3171 /* The following relocations don't need to propagate the
3172 relocation if linking a shared object since they are
3173 section relative. */
3174 case R_PPC_SECTOFF:
3175 case R_PPC_SECTOFF_LO:
3176 case R_PPC_SECTOFF_HI:
3177 case R_PPC_SECTOFF_HA:
3178 case R_PPC_DTPREL16:
3179 case R_PPC_DTPREL16_LO:
3180 case R_PPC_DTPREL16_HI:
3181 case R_PPC_DTPREL16_HA:
3182 case R_PPC_TOC16:
3183 break;
252b5132 3184
d7128ce4
AM
3185 case R_PPC_REL16:
3186 case R_PPC_REL16_LO:
3187 case R_PPC_REL16_HI:
3188 case R_PPC_REL16_HA:
3189 htab->new_plt = 1;
3190 break;
3191
a6aa5195 3192 /* These are just markers. */
25dbc73a
AM
3193 case R_PPC_TLS:
3194 case R_PPC_EMB_MRKREF:
3195 case R_PPC_NONE:
3196 case R_PPC_max:
3197 break;
252b5132 3198
25dbc73a
AM
3199 /* These should only appear in dynamic objects. */
3200 case R_PPC_COPY:
3201 case R_PPC_GLOB_DAT:
3202 case R_PPC_JMP_SLOT:
3203 case R_PPC_RELATIVE:
3204 break;
252b5132 3205
25dbc73a
AM
3206 /* These aren't handled yet. We'll report an error later. */
3207 case R_PPC_ADDR30:
3208 case R_PPC_EMB_RELSEC16:
3209 case R_PPC_EMB_RELST_LO:
3210 case R_PPC_EMB_RELST_HI:
3211 case R_PPC_EMB_RELST_HA:
3212 case R_PPC_EMB_BIT_FLD:
3213 break;
252b5132 3214
25dbc73a
AM
3215 /* This refers only to functions defined in the shared library. */
3216 case R_PPC_LOCAL24PC:
d7128ce4
AM
3217 if (h && h == htab->elf.hgot)
3218 htab->old_plt = 1;
25dbc73a 3219 break;
252b5132 3220
25dbc73a
AM
3221 /* This relocation describes the C++ object vtable hierarchy.
3222 Reconstruct it for later use during GC. */
3223 case R_PPC_GNU_VTINHERIT:
3224 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3225 return FALSE;
3226 break;
252b5132 3227
25dbc73a
AM
3228 /* This relocation describes which C++ vtable entries are actually
3229 used. Record for later use during GC. */
3230 case R_PPC_GNU_VTENTRY:
3231 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3232 return FALSE;
3233 break;
252b5132 3234
25dbc73a
AM
3235 /* We shouldn't really be seeing these. */
3236 case R_PPC_TPREL32:
3237 if (info->shared)
3238 info->flags |= DF_STATIC_TLS;
3239 goto dodyn;
252b5132 3240
25dbc73a
AM
3241 /* Nor these. */
3242 case R_PPC_DTPMOD32:
3243 case R_PPC_DTPREL32:
3244 goto dodyn;
252b5132 3245
25dbc73a
AM
3246 case R_PPC_TPREL16:
3247 case R_PPC_TPREL16_LO:
3248 case R_PPC_TPREL16_HI:
3249 case R_PPC_TPREL16_HA:
3250 if (info->shared)
3251 info->flags |= DF_STATIC_TLS;
3252 goto dodyn;
ee05f2fe 3253
9edfd1af
AM
3254 case R_PPC_REL32:
3255 if (h == NULL
3256 && got2 != NULL
3257 && (sec->flags & SEC_CODE) != 0
3258 && (info->shared || info->pie)
3259 && !htab->old_plt)
3260 {
3261 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3262 the start of a function, which assembles to a REL32
3263 reference to .got2. If we detect one of these, then
3264 force the old PLT layout because the linker cannot
3265 reliably deduce the GOT pointer value needed for
3266 PLT call stubs. */
3267 asection *s;
3268
3269 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3270 r_symndx);
3271 if (s == got2)
3272 htab->old_plt = 1;
3273 }
3274 /* fall through */
3275
25dbc73a
AM
3276 case R_PPC_REL24:
3277 case R_PPC_REL14:
3278 case R_PPC_REL14_BRTAKEN:
3279 case R_PPC_REL14_BRNTAKEN:
d7128ce4 3280 if (h == NULL)
25dbc73a 3281 break;
d7128ce4
AM
3282 if (h == htab->elf.hgot)
3283 {
3284 htab->old_plt = 1;
3285 break;
3286 }
25dbc73a 3287 /* fall through */
ee05f2fe 3288
25dbc73a
AM
3289 case R_PPC_ADDR32:
3290 case R_PPC_ADDR24:
3291 case R_PPC_ADDR16:
3292 case R_PPC_ADDR16_LO:
3293 case R_PPC_ADDR16_HI:
3294 case R_PPC_ADDR16_HA:
3295 case R_PPC_ADDR14:
3296 case R_PPC_ADDR14_BRTAKEN:
3297 case R_PPC_ADDR14_BRNTAKEN:
3298 case R_PPC_UADDR32:
3299 case R_PPC_UADDR16:
3300 if (h != NULL && !info->shared)
3301 {
3302 /* We may need a plt entry if the symbol turns out to be
3303 a function defined in a dynamic object. */
a6aa5195
AM
3304 if (!update_plt_info (abfd, h, NULL, 0))
3305 return FALSE;
7fce784e 3306
25dbc73a
AM
3307 /* We may need a copy reloc too. */
3308 h->non_got_ref = 1;
3309 }
7619e7c7 3310
25dbc73a
AM
3311 dodyn:
3312 /* If we are creating a shared library, and this is a reloc
3313 against a global symbol, or a non PC relative reloc
3314 against a local symbol, then we need to copy the reloc
3315 into the shared library. However, if we are linking with
3316 -Bsymbolic, we do not need to copy a reloc against a
3317 global symbol which is defined in an object we are
3318 including in the link (i.e., DEF_REGULAR is set). At
3319 this point we have not seen all the input files, so it is
3320 possible that DEF_REGULAR is not set now but will be set
3321 later (it is never cleared). In case of a weak definition,
3322 DEF_REGULAR may be cleared later by a strong definition in
3323 a shared library. We account for that possibility below by
3324 storing information in the dyn_relocs field of the hash
3325 table entry. A similar situation occurs when creating
3326 shared libraries and symbol visibility changes render the
3327 symbol local.
7619e7c7 3328
25dbc73a
AM
3329 If on the other hand, we are creating an executable, we
3330 may need to keep relocations for symbols satisfied by a
3331 dynamic library if we manage to avoid copy relocs for the
3332 symbol. */
3333 if ((info->shared
3334 && (MUST_BE_DYN_RELOC (r_type)
3335 || (h != NULL
3336 && (! info->symbolic
3337 || h->root.type == bfd_link_hash_defweak
3338 || !h->def_regular))))
3339 || (ELIMINATE_COPY_RELOCS
3340 && !info->shared
25dbc73a
AM
3341 && h != NULL
3342 && (h->root.type == bfd_link_hash_defweak
3343 || !h->def_regular)))
3344 {
3345 struct ppc_elf_dyn_relocs *p;
3346 struct ppc_elf_dyn_relocs **head;
7619e7c7 3347
25dbc73a
AM
3348#ifdef DEBUG
3349 fprintf (stderr,
3350 "ppc_elf_check_relocs needs to "
3351 "create relocation for %s\n",
3352 (h && h->root.root.string
3353 ? h->root.root.string : "<unknown>"));
3354#endif
3355 if (sreloc == NULL)
3356 {
3357 const char *name;
7619e7c7 3358
25dbc73a
AM
3359 name = (bfd_elf_string_from_elf_section
3360 (abfd,
3361 elf_elfheader (abfd)->e_shstrndx,
3362 elf_section_data (sec)->rel_hdr.sh_name));
3363 if (name == NULL)
3364 return FALSE;
7619e7c7 3365
25dbc73a
AM
3366 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3367 && strcmp (bfd_get_section_name (abfd, sec),
3368 name + 5) == 0);
7619e7c7 3369
c9a2f333
AM
3370 if (htab->elf.dynobj == NULL)
3371 htab->elf.dynobj = abfd;
25dbc73a
AM
3372 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3373 if (sreloc == NULL)
3374 {
3375 flagword flags;
7619e7c7 3376
25dbc73a 3377 flags = (SEC_HAS_CONTENTS | SEC_READONLY
c87b5a93
AM
3378 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3379 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L
3380 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3381 name,
3382 flags);
25dbc73a 3383 if (sreloc == NULL
25dbc73a
AM
3384 || ! bfd_set_section_alignment (htab->elf.dynobj,
3385 sreloc, 2))
3386 return FALSE;
3387 }
3388 elf_section_data (sec)->sreloc = sreloc;
3389 }
7619e7c7 3390
25dbc73a
AM
3391 /* If this is a global symbol, we count the number of
3392 relocations we need for this symbol. */
3393 if (h != NULL)
3394 {
3395 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3396 }
3397 else
3398 {
3399 /* Track dynamic relocs needed for local syms too.
3400 We really need local syms available to do this
3401 easily. Oh well. */
7619e7c7 3402
25dbc73a
AM
3403 asection *s;
3404 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3405 sec, r_symndx);
3406 if (s == NULL)
3407 return FALSE;
7fce784e 3408
25dbc73a
AM
3409 head = ((struct ppc_elf_dyn_relocs **)
3410 &elf_section_data (s)->local_dynrel);
3411 }
7fce784e 3412
25dbc73a
AM
3413 p = *head;
3414 if (p == NULL || p->sec != sec)
3415 {
3416 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3417 if (p == NULL)
3418 return FALSE;
3419 p->next = *head;
3420 *head = p;
3421 p->sec = sec;
3422 p->count = 0;
3423 p->pc_count = 0;
3424 }
3425
3426 p->count += 1;
3427 if (!MUST_BE_DYN_RELOC (r_type))
3428 p->pc_count += 1;
7619e7c7 3429 }
25dbc73a
AM
3430
3431 break;
7619e7c7
AM
3432 }
3433 }
ee05f2fe 3434
25dbc73a
AM
3435 return TRUE;
3436}
3437\f
8853c3d3
AM
3438/* Merge backend specific data from an object file to the output
3439 object file when linking. */
3440
3441static bfd_boolean
3442ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3443{
3444 flagword old_flags;
3445 flagword new_flags;
3446 bfd_boolean error;
3447
3448 if (!is_ppc_elf_target (ibfd->xvec)
3449 || !is_ppc_elf_target (obfd->xvec))
3450 return TRUE;
3451
3452 /* Check if we have the same endianess. */
3453 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3454 return FALSE;
3455
3456 new_flags = elf_elfheader (ibfd)->e_flags;
3457 old_flags = elf_elfheader (obfd)->e_flags;
3458 if (!elf_flags_init (obfd))
3459 {
3460 /* First call, no flags set. */
3461 elf_flags_init (obfd) = TRUE;
3462 elf_elfheader (obfd)->e_flags = new_flags;
3463 }
3464
3465 /* Compatible flags are ok. */
3466 else if (new_flags == old_flags)
3467 ;
3468
3469 /* Incompatible flags. */
3470 else
3471 {
3472 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3473 to be linked with either. */
3474 error = FALSE;
3475 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3476 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3477 {
3478 error = TRUE;
3479 (*_bfd_error_handler)
3480 (_("%B: compiled with -mrelocatable and linked with "
3481 "modules compiled normally"), ibfd);
3482 }
3483 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3484 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3485 {
3486 error = TRUE;
3487 (*_bfd_error_handler)
3488 (_("%B: compiled normally and linked with "
3489 "modules compiled with -mrelocatable"), ibfd);
3490 }
3491
3492 /* The output is -mrelocatable-lib iff both the input files are. */
3493 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3494 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3495
3496 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3497 but each input file is either -mrelocatable or -mrelocatable-lib. */
3498 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3499 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3500 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3501 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3502
3503 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3504 any module uses it. */
3505 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3506
3507 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3508 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3509
3510 /* Warn about any other mismatches. */
3511 if (new_flags != old_flags)
3512 {
3513 error = TRUE;
3514 (*_bfd_error_handler)
3515 (_("%B: uses different e_flags (0x%lx) fields "
3516 "than previous modules (0x%lx)"),
3517 ibfd, (long) new_flags, (long) old_flags);
3518 }
3519
3520 if (error)
3521 {
3522 bfd_set_error (bfd_error_bad_value);
3523 return FALSE;
3524 }
3525 }
3526
3527 return TRUE;
3528}
3529\f
d7128ce4
AM
3530/* Choose which PLT scheme to use, and set .plt flags appropriately.
3531 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3532int
3533ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3534 struct bfd_link_info *info,
3535 int force_old_plt)
3536{
3537 struct ppc_elf_link_hash_table *htab;
9d8504b1 3538 flagword flags;
d7128ce4
AM
3539
3540 htab = ppc_elf_hash_table (info);
3541 if (force_old_plt || !htab->new_plt)
3542 htab->old_plt = 1;
3543
9d8504b1 3544 if (htab->is_vxworks)
d7128ce4 3545 {
9d8504b1
PB
3546 /* The VxWorks PLT is a loaded section with contents. */
3547 flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED
3548 | SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3549
3550 if (htab->plt != NULL
3551 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3552 return -1;
3553 }
3554 else if (!htab->old_plt)
3555 {
3556 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3557 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
3558
3559 /* The new PLT is a loaded section. */
3560 if (htab->plt != NULL
3561 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3562 return -1;
3563
3564 /* The new GOT is not executable. */
3565 if (htab->got != NULL
3566 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3567 return -1;
d7128ce4
AM
3568 }
3569 else
3570 {
3571 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
3572 if (htab->glink != NULL
3573 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3574 return -1;
d7128ce4
AM
3575 }
3576 return !htab->old_plt;
3577}
3578\f
25dbc73a
AM
3579/* Return the section that should be marked against GC for a given
3580 relocation. */
586119b3 3581
25dbc73a
AM
3582static asection *
3583ppc_elf_gc_mark_hook (asection *sec,
3584 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3585 Elf_Internal_Rela *rel,
3586 struct elf_link_hash_entry *h,
3587 Elf_Internal_Sym *sym)
3588{
3589 if (h != NULL)
ee05f2fe 3590 {
25dbc73a 3591 switch (ELF32_R_TYPE (rel->r_info))
ee05f2fe 3592 {
25dbc73a
AM
3593 case R_PPC_GNU_VTINHERIT:
3594 case R_PPC_GNU_VTENTRY:
3595 break;
ee05f2fe 3596
25dbc73a
AM
3597 default:
3598 switch (h->root.type)
ee05f2fe 3599 {
25dbc73a
AM
3600 case bfd_link_hash_defined:
3601 case bfd_link_hash_defweak:
3602 return h->root.u.def.section;
3603
3604 case bfd_link_hash_common:
3605 return h->root.u.c.p->section;
3606
3607 default:
3608 break;
ee05f2fe
AM
3609 }
3610 }
25dbc73a
AM
3611 }
3612 else
3613 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4e795f50 3614
25dbc73a
AM
3615 return NULL;
3616}
a876ecf9 3617
25dbc73a
AM
3618/* Update the got, plt and dynamic reloc reference counts for the
3619 section being removed. */
3620
3621static bfd_boolean
3622ppc_elf_gc_sweep_hook (bfd *abfd,
3623 struct bfd_link_info *info,
3624 asection *sec,
3625 const Elf_Internal_Rela *relocs)
3626{
3627 struct ppc_elf_link_hash_table *htab;
3628 Elf_Internal_Shdr *symtab_hdr;
3629 struct elf_link_hash_entry **sym_hashes;
3630 bfd_signed_vma *local_got_refcounts;
3631 const Elf_Internal_Rela *rel, *relend;
a6aa5195 3632 asection *got2;
25dbc73a 3633
c87b5a93
AM
3634 if ((sec->flags & SEC_ALLOC) == 0)
3635 return TRUE;
3636
25dbc73a
AM
3637 elf_section_data (sec)->local_dynrel = NULL;
3638
3639 htab = ppc_elf_hash_table (info);
3640 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3641 sym_hashes = elf_sym_hashes (abfd);
3642 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 3643 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
3644
3645 relend = relocs + sec->reloc_count;
3646 for (rel = relocs; rel < relend; rel++)
3647 {
3648 unsigned long r_symndx;
3649 enum elf_ppc_reloc_type r_type;
3650 struct elf_link_hash_entry *h = NULL;
3651
3652 r_symndx = ELF32_R_SYM (rel->r_info);
3653 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 3654 {
25dbc73a
AM
3655 struct ppc_elf_dyn_relocs **pp, *p;
3656 struct ppc_elf_link_hash_entry *eh;
3657
3658 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3659 while (h->root.type == bfd_link_hash_indirect
3660 || h->root.type == bfd_link_hash_warning)
3661 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3662 eh = (struct ppc_elf_link_hash_entry *) h;
3663
3664 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3665 if (p->sec == sec)
3666 {
3667 /* Everything must go for SEC. */
3668 *pp = p->next;
3669 break;
3670 }
a876ecf9 3671 }
ee05f2fe 3672
25dbc73a
AM
3673 r_type = ELF32_R_TYPE (rel->r_info);
3674 switch (r_type)
ee05f2fe 3675 {
25dbc73a
AM
3676 case R_PPC_GOT_TLSLD16:
3677 case R_PPC_GOT_TLSLD16_LO:
3678 case R_PPC_GOT_TLSLD16_HI:
3679 case R_PPC_GOT_TLSLD16_HA:
3680 htab->tlsld_got.refcount -= 1;
3681 /* Fall thru */
3682
3683 case R_PPC_GOT_TLSGD16:
3684 case R_PPC_GOT_TLSGD16_LO:
3685 case R_PPC_GOT_TLSGD16_HI:
3686 case R_PPC_GOT_TLSGD16_HA:
3687 case R_PPC_GOT_TPREL16:
3688 case R_PPC_GOT_TPREL16_LO:
3689 case R_PPC_GOT_TPREL16_HI:
3690 case R_PPC_GOT_TPREL16_HA:
3691 case R_PPC_GOT_DTPREL16:
3692 case R_PPC_GOT_DTPREL16_LO:
3693 case R_PPC_GOT_DTPREL16_HI:
3694 case R_PPC_GOT_DTPREL16_HA:
3695 case R_PPC_GOT16:
3696 case R_PPC_GOT16_LO:
3697 case R_PPC_GOT16_HI:
3698 case R_PPC_GOT16_HA:
3699 if (h != NULL)
ee05f2fe 3700 {
25dbc73a
AM
3701 if (h->got.refcount > 0)
3702 h->got.refcount--;
ee05f2fe 3703 }
25dbc73a
AM
3704 else if (local_got_refcounts != NULL)
3705 {
3706 if (local_got_refcounts[r_symndx] > 0)
3707 local_got_refcounts[r_symndx]--;
3708 }
3709 break;
ee05f2fe 3710
25dbc73a
AM
3711 case R_PPC_REL24:
3712 case R_PPC_REL14:
3713 case R_PPC_REL14_BRTAKEN:
3714 case R_PPC_REL14_BRNTAKEN:
3715 case R_PPC_REL32:
3b36f7e6 3716 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM
3717 break;
3718 /* Fall thru */
ee05f2fe 3719
25dbc73a
AM
3720 case R_PPC_ADDR32:
3721 case R_PPC_ADDR24:
3722 case R_PPC_ADDR16:
3723 case R_PPC_ADDR16_LO:
3724 case R_PPC_ADDR16_HI:
3725 case R_PPC_ADDR16_HA:
3726 case R_PPC_ADDR14:
3727 case R_PPC_ADDR14_BRTAKEN:
3728 case R_PPC_ADDR14_BRNTAKEN:
3729 case R_PPC_UADDR32:
3730 case R_PPC_UADDR16:
3731 case R_PPC_PLT32:
3732 case R_PPC_PLTREL24:
3733 case R_PPC_PLT16_LO:
3734 case R_PPC_PLT16_HI:
3735 case R_PPC_PLT16_HA:
3736 if (h != NULL)
3737 {
a6aa5195
AM
3738 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3739 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3740 if (ent->plt.refcount > 0)
3741 ent->plt.refcount -= 1;
25dbc73a
AM
3742 }
3743 break;
ee05f2fe 3744
25dbc73a
AM
3745 default:
3746 break;
3747 }
7fce784e 3748 }
7fce784e
AS
3749 return TRUE;
3750}
25dbc73a
AM
3751\f
3752/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7fce784e 3753
25dbc73a
AM
3754asection *
3755ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 3756{
25dbc73a 3757 struct ppc_elf_link_hash_table *htab;
7fce784e 3758
25dbc73a 3759 htab = ppc_elf_hash_table (info);
d7128ce4
AM
3760 if (!htab->old_plt
3761 && htab->plt != NULL
3762 && htab->plt->output_section != NULL)
3763 {
3764 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3765 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3766 }
3767
25dbc73a
AM
3768 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3769 FALSE, FALSE, TRUE);
25dbc73a 3770 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
3771}
3772
25dbc73a
AM
3773/* Run through all the TLS relocs looking for optimization
3774 opportunities. */
252b5132 3775
25dbc73a
AM
3776bfd_boolean
3777ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3778 struct bfd_link_info *info)
252b5132 3779{
7fce784e 3780 bfd *ibfd;
25dbc73a
AM
3781 asection *sec;
3782 struct ppc_elf_link_hash_table *htab;
252b5132 3783
25dbc73a
AM
3784 if (info->relocatable || info->shared)
3785 return TRUE;
252b5132 3786
7619e7c7 3787 htab = ppc_elf_hash_table (info);
25dbc73a 3788 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
252b5132 3789 {
25dbc73a
AM
3790 Elf_Internal_Sym *locsyms = NULL;
3791 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7619e7c7 3792
25dbc73a
AM
3793 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3794 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3795 {
3796 Elf_Internal_Rela *relstart, *rel, *relend;
3797 int expecting_tls_get_addr;
252b5132 3798
25dbc73a
AM
3799 /* Read the relocations. */
3800 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3801 info->keep_memory);
3802 if (relstart == NULL)
3803 return FALSE;
7619e7c7 3804
25dbc73a
AM
3805 expecting_tls_get_addr = 0;
3806 relend = relstart + sec->reloc_count;
3807 for (rel = relstart; rel < relend; rel++)
3808 {
3809 enum elf_ppc_reloc_type r_type;
3810 unsigned long r_symndx;
3811 struct elf_link_hash_entry *h = NULL;
3812 char *tls_mask;
3813 char tls_set, tls_clear;
3814 bfd_boolean is_local;
7fce784e 3815
25dbc73a
AM
3816 r_symndx = ELF32_R_SYM (rel->r_info);
3817 if (r_symndx >= symtab_hdr->sh_info)
3818 {
3819 struct elf_link_hash_entry **sym_hashes;
7fce784e 3820
25dbc73a
AM
3821 sym_hashes = elf_sym_hashes (ibfd);
3822 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3823 while (h->root.type == bfd_link_hash_indirect
3824 || h->root.type == bfd_link_hash_warning)
3825 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3826 }
7619e7c7 3827
25dbc73a
AM
3828 is_local = FALSE;
3829 if (h == NULL
3830 || !h->def_dynamic)
3831 is_local = TRUE;
7619e7c7 3832
25dbc73a
AM
3833 r_type = ELF32_R_TYPE (rel->r_info);
3834 switch (r_type)
7619e7c7 3835 {
25dbc73a
AM
3836 case R_PPC_GOT_TLSLD16:
3837 case R_PPC_GOT_TLSLD16_LO:
3838 case R_PPC_GOT_TLSLD16_HI:
3839 case R_PPC_GOT_TLSLD16_HA:
3840 /* These relocs should never be against a symbol
3841 defined in a shared lib. Leave them alone if
3842 that turns out to be the case. */
3843 expecting_tls_get_addr = 0;
3844 htab->tlsld_got.refcount -= 1;
3845 if (!is_local)
3846 continue;
3847
3848 /* LD -> LE */
3849 tls_set = 0;
3850 tls_clear = TLS_LD;
3851 expecting_tls_get_addr = 1;
3852 break;
3853
3854 case R_PPC_GOT_TLSGD16:
3855 case R_PPC_GOT_TLSGD16_LO:
3856 case R_PPC_GOT_TLSGD16_HI:
3857 case R_PPC_GOT_TLSGD16_HA:
3858 if (is_local)
3859 /* GD -> LE */
3860 tls_set = 0;
3861 else
3862 /* GD -> IE */
3863 tls_set = TLS_TLS | TLS_TPRELGD;
3864 tls_clear = TLS_GD;
3865 expecting_tls_get_addr = 1;
3866 break;
3867
3868 case R_PPC_GOT_TPREL16:
3869 case R_PPC_GOT_TPREL16_LO:
3870 case R_PPC_GOT_TPREL16_HI:
3871 case R_PPC_GOT_TPREL16_HA:
3872 expecting_tls_get_addr = 0;
3873 if (is_local)
3874 {
3875 /* IE -> LE */
3876 tls_set = 0;
3877 tls_clear = TLS_TPREL;
3878 break;
3879 }
3880 else
3881 continue;
3882
3883 case R_PPC_REL14:
3884 case R_PPC_REL14_BRTAKEN:
3885 case R_PPC_REL14_BRNTAKEN:
3886 case R_PPC_REL24:
3887 if (expecting_tls_get_addr
3888 && h != NULL
3889 && h == htab->tls_get_addr)
3890 {
a6aa5195
AM
3891 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
3892 if (ent != NULL && ent->plt.refcount > 0)
3893 ent->plt.refcount -= 1;
25dbc73a
AM
3894 }
3895 expecting_tls_get_addr = 0;
3896 continue;
3897
3898 default:
3899 expecting_tls_get_addr = 0;
3900 continue;
7619e7c7 3901 }
25dbc73a
AM
3902
3903 if (h != NULL)
7619e7c7 3904 {
25dbc73a
AM
3905 if (tls_set == 0)
3906 {
3907 /* We managed to get rid of a got entry. */
3908 if (h->got.refcount > 0)
3909 h->got.refcount -= 1;
3910 }
3911 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3912 }
3913 else
3914 {
3915 Elf_Internal_Sym *sym;
3916 bfd_signed_vma *lgot_refs;
3917 char *lgot_masks;
3918
3919 if (locsyms == NULL)
3920 {
3921 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3922 if (locsyms == NULL)
3923 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3924 symtab_hdr->sh_info,
3925 0, NULL, NULL, NULL);
3926 if (locsyms == NULL)
3927 {
3928 if (elf_section_data (sec)->relocs != relstart)
3929 free (relstart);
3930 return FALSE;
3931 }
3932 }
3933 sym = locsyms + r_symndx;
3934 lgot_refs = elf_local_got_refcounts (ibfd);
3935 if (lgot_refs == NULL)
3936 abort ();
3937 if (tls_set == 0)
3938 {
3939 /* We managed to get rid of a got entry. */
3940 if (lgot_refs[r_symndx] > 0)
3941 lgot_refs[r_symndx] -= 1;
3942 }
3943 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
3944 tls_mask = &lgot_masks[r_symndx];
7619e7c7 3945 }
25dbc73a
AM
3946
3947 *tls_mask |= tls_set;
3948 *tls_mask &= ~tls_clear;
7619e7c7 3949 }
25dbc73a
AM
3950
3951 if (elf_section_data (sec)->relocs != relstart)
3952 free (relstart);
7619e7c7 3953 }
25dbc73a
AM
3954
3955 if (locsyms != NULL
3956 && (symtab_hdr->contents != (unsigned char *) locsyms))
3957 {
3958 if (!info->keep_memory)
3959 free (locsyms);
3960 else
3961 symtab_hdr->contents = (unsigned char *) locsyms;
3962 }
7fce784e 3963 }
25dbc73a
AM
3964 return TRUE;
3965}
3966\f
3967/* Adjust a symbol defined by a dynamic object and referenced by a
3968 regular object. The current definition is in some section of the
3969 dynamic object, but we're not including those sections. We have to
3970 change the definition to something the rest of the link can
3971 understand. */
7fce784e 3972
25dbc73a
AM
3973static bfd_boolean
3974ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3975 struct elf_link_hash_entry *h)
3976{
3977 struct ppc_elf_link_hash_table *htab;
3978 asection *s;
3979 unsigned int power_of_two;
7fce784e 3980
25dbc73a
AM
3981#ifdef DEBUG
3982 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
3983 h->root.root.string);
3984#endif
252b5132 3985
25dbc73a
AM
3986 /* Make sure we know what is going on here. */
3987 htab = ppc_elf_hash_table (info);
3988 BFD_ASSERT (htab->elf.dynobj != NULL
3989 && (h->needs_plt
3990 || h->u.weakdef != NULL
3991 || (h->def_dynamic
3992 && h->ref_regular
3993 && !h->def_regular)));
252b5132 3994
25dbc73a
AM
3995 /* Deal with function syms. */
3996 if (h->type == STT_FUNC
3997 || h->needs_plt)
3998 {
3999 /* Clear procedure linkage table information for any symbol that
4000 won't need a .plt entry. */
a6aa5195
AM
4001 struct plt_entry *ent;
4002 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4003 if (ent->plt.refcount > 0)
4004 break;
4005 if (ent == NULL
25dbc73a
AM
4006 || SYMBOL_CALLS_LOCAL (info, h)
4007 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4008 && h->root.type == bfd_link_hash_undefweak))
252b5132 4009 {
25dbc73a 4010 /* A PLT entry is not required/allowed when:
252b5132 4011
25dbc73a
AM
4012 1. We are not using ld.so; because then the PLT entry
4013 can't be set up, so we can't use one. In this case,
4014 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 4015
25dbc73a
AM
4016 2. GC has rendered the entry unused.
4017
4018 3. We know for certain that a call to this symbol
4019 will go to this object, or will remain undefined. */
a6aa5195 4020 h->plt.plist = NULL;
25dbc73a
AM
4021 h->needs_plt = 0;
4022 }
4023 return TRUE;
252b5132 4024 }
25dbc73a 4025 else
a6aa5195 4026 h->plt.plist = NULL;
252b5132 4027
25dbc73a
AM
4028 /* If this is a weak symbol, and there is a real definition, the
4029 processor independent code will have arranged for us to see the
4030 real definition first, and we can just use the same value. */
4031 if (h->u.weakdef != NULL)
252b5132 4032 {
25dbc73a
AM
4033 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4034 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4035 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4036 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4037 if (ELIMINATE_COPY_RELOCS)
4038 h->non_got_ref = h->u.weakdef->non_got_ref;
4039 return TRUE;
4040 }
dc810e39 4041
25dbc73a
AM
4042 /* This is a reference to a symbol defined by a dynamic object which
4043 is not a function. */
252b5132 4044
b116d4a7
AM
4045 /* First, a fudge for old shared libs that export some symbols they
4046 should not. */
4047 if (!h->def_regular
4048 && (strcmp (h->root.root.string, "_SDA_BASE_") == 0
4049 || strcmp (h->root.root.string, "_SDA2_BASE_") == 0))
4050 {
4051 /* These symbols will be defined later, as if they were defined in
4052 a linker script. We don't want to use a definition in a shared
4053 object. */
4054 const struct elf_backend_data *bed;
4055
4056 bed = get_elf_backend_data (htab->elf.dynobj);
4057 (*bed->elf_backend_hide_symbol) (info, h, TRUE);
4058 h->root.type = bfd_link_hash_undefined;
4059 h->root.u.undef.abfd = htab->elf.dynobj;
4060 return TRUE;
4061 }
4062
25dbc73a
AM
4063 /* If we are creating a shared library, we must presume that the
4064 only references to the symbol are via the global offset table.
4065 For such cases we need not do anything here; the relocations will
4066 be handled correctly by relocate_section. */
4067 if (info->shared)
4068 return TRUE;
252b5132 4069
25dbc73a
AM
4070 /* If there are no references to this symbol that do not use the
4071 GOT, we don't need to generate a copy reloc. */
4072 if (!h->non_got_ref)
4073 return TRUE;
4074
4dc4a9a5
DJ
4075 /* If we didn't find any dynamic relocs in read-only sections, then we'll
4076 be keeping the dynamic relocs and avoiding the copy reloc. We can't
4077 do this if there are any small data relocations. */
4078 if (ELIMINATE_COPY_RELOCS
4079 && !ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4080 {
4081 struct ppc_elf_dyn_relocs *p;
4082 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
252b5132 4083 {
25dbc73a
AM
4084 s = p->sec->output_section;
4085 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4086 break;
252b5132
RH
4087 }
4088
25dbc73a 4089 if (p == NULL)
252b5132 4090 {
25dbc73a
AM
4091 h->non_got_ref = 0;
4092 return TRUE;
252b5132
RH
4093 }
4094 }
4095
25dbc73a
AM
4096 /* We must allocate the symbol in our .dynbss section, which will
4097 become part of the .bss section of the executable. There will be
4098 an entry for this symbol in the .dynsym section. The dynamic
4099 object will contain position independent code, so all references
4100 from the dynamic object to this symbol will go through the global
4101 offset table. The dynamic linker will use the .dynsym entry to
4102 determine the address it must put in the global offset table, so
4103 both the dynamic object and the regular object will refer to the
4104 same memory location for the variable.
4105
4dc4a9a5
DJ
4106 Of course, if the symbol is referenced using SDAREL relocs, we
4107 must instead allocate it in .sbss. */
25dbc73a 4108
4dc4a9a5 4109 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4110 s = htab->dynsbss;
4111 else
4112 s = htab->dynbss;
4113 BFD_ASSERT (s != NULL);
4114
4115 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4116 copy the initial value out of the dynamic object and into the
4117 runtime process image. We need to remember the offset into the
4118 .rela.bss section we are going to use. */
4119 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4120 {
4121 asection *srel;
4122
4dc4a9a5 4123 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4124 srel = htab->relsbss;
4125 else
4126 srel = htab->relbss;
4127 BFD_ASSERT (srel != NULL);
4128 srel->size += sizeof (Elf32_External_Rela);
4129 h->needs_copy = 1;
4130 }
7619e7c7 4131
25dbc73a
AM
4132 /* We need to figure out the alignment required for this symbol. I
4133 have no idea how ELF linkers handle this. */
4134 power_of_two = bfd_log2 (h->size);
4135 if (power_of_two > 4)
4136 power_of_two = 4;
7619e7c7 4137
25dbc73a
AM
4138 /* Apply the required alignment. */
4139 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4140 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4141 {
4142 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
7619e7c7 4143 return FALSE;
7619e7c7
AM
4144 }
4145
25dbc73a
AM
4146 /* Define the symbol as being at this point in the section. */
4147 h->root.u.def.section = s;
4148 h->root.u.def.value = s->size;
7619e7c7 4149
25dbc73a
AM
4150 /* Increment the section size to make room for the symbol. */
4151 s->size += h->size;
7619e7c7 4152
25dbc73a
AM
4153 return TRUE;
4154}
4155\f
3b36f7e6
AM
4156/* Allocate NEED contiguous space in .got, and return the offset.
4157 Handles allocation of the got header when crossing 32k. */
4158
4159static bfd_vma
4160allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4161{
4162 bfd_vma where;
d7128ce4
AM
4163 unsigned int max_before_header = 32768;
4164
4165 if (htab->old_plt)
4166 max_before_header = 32764;
3b36f7e6 4167
9d8504b1
PB
4168 if (htab->is_vxworks)
4169 {
4170 where = htab->got->size;
4171 htab->got->size += need;
4172 }
4173 else if (need <= htab->got_gap)
3b36f7e6
AM
4174 {
4175 where = max_before_header - htab->got_gap;
4176 htab->got_gap -= need;
4177 }
4178 else
4179 {
4180 if (htab->got->size + need > max_before_header
4181 && htab->got->size <= max_before_header)
4182 {
4183 htab->got_gap = max_before_header - htab->got->size;
4184 htab->got->size = max_before_header + htab->got_header_size;
4185 }
4186 where = htab->got->size;
4187 htab->got->size += need;
4188 }
4189 return where;
4190}
4191
25dbc73a 4192/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 4193
b34976b6 4194static bfd_boolean
25dbc73a 4195allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 4196{
25dbc73a
AM
4197 struct bfd_link_info *info = inf;
4198 struct ppc_elf_link_hash_entry *eh;
7619e7c7 4199 struct ppc_elf_link_hash_table *htab;
25dbc73a 4200 struct ppc_elf_dyn_relocs *p;
252b5132 4201
25dbc73a 4202 if (h->root.type == bfd_link_hash_indirect)
b34976b6 4203 return TRUE;
252b5132 4204
25dbc73a
AM
4205 if (h->root.type == bfd_link_hash_warning)
4206 /* When warning symbols are created, they **replace** the "real"
4207 entry in the hash table, thus we never get to see the real
4208 symbol in a hash traversal. So look at it now. */
4209 h = (struct elf_link_hash_entry *) h->root.u.i.link;
e47cd125 4210
7619e7c7 4211 htab = ppc_elf_hash_table (info);
a6aa5195 4212 if (htab->elf.dynamic_sections_created)
252b5132 4213 {
a6aa5195
AM
4214 struct plt_entry *ent;
4215 bfd_boolean doneone = FALSE;
28e99bb6
AM
4216 bfd_vma plt_offset = 0, glink_offset = 0;
4217
a6aa5195
AM
4218 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4219 if (ent->plt.refcount > 0)
4220 {
4221 /* Make sure this symbol is output as a dynamic symbol. */
4222 if (h->dynindx == -1
4223 && !h->forced_local)
4224 {
4225 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4226 return FALSE;
4227 }
252b5132 4228
a6aa5195
AM
4229 if (info->shared
4230 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4231 {
4232 asection *s = htab->plt;
7619e7c7 4233
9d8504b1 4234 if (!(htab->old_plt || htab->is_vxworks))
a6aa5195 4235 {
a6aa5195 4236 if (!doneone)
28e99bb6
AM
4237 {
4238 plt_offset = s->size;
4239 s->size += 4;
4240 }
4241 ent->plt.offset = plt_offset;
d7128ce4 4242
a6aa5195 4243 s = htab->glink;
28e99bb6
AM
4244 if (!doneone || info->shared || info->pie)
4245 {
4246 glink_offset = s->size;
4247 s->size += GLINK_ENTRY_SIZE;
4248 }
4249 if (!doneone
4250 && !info->shared
a6aa5195
AM
4251 && !h->def_regular)
4252 {
4253 h->root.u.def.section = s;
28e99bb6 4254 h->root.u.def.value = glink_offset;
a6aa5195 4255 }
28e99bb6 4256 ent->glink_offset = glink_offset;
a6aa5195
AM
4257 }
4258 else
4259 {
a6aa5195
AM
4260 if (!doneone)
4261 {
28e99bb6
AM
4262 /* If this is the first .plt entry, make room
4263 for the special first entry. */
4264 if (s->size == 0)
9d8504b1 4265 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
4266
4267 /* The PowerPC PLT is actually composed of two
4268 parts, the first part is 2 words (for a load
4269 and a jump), and then there is a remaining
4270 word available at the end. */
9d8504b1
PB
4271 plt_offset = (htab->plt_initial_entry_size
4272 + (htab->plt_slot_size
4273 * ((s->size
4274 - htab->plt_initial_entry_size)
4275 / htab->plt_entry_size)));
28e99bb6
AM
4276
4277 /* If this symbol is not defined in a regular
4278 file, and we are not generating a shared
4279 library, then set the symbol to this location
4280 in the .plt. This is required to make
4281 function pointers compare as equal between
4282 the normal executable and the shared library. */
4283 if (! info->shared
4284 && !h->def_regular)
4285 {
4286 h->root.u.def.section = s;
4287 h->root.u.def.value = plt_offset;
4288 }
4289
9d8504b1
PB
4290 /* Make room for this entry. */
4291 s->size += htab->plt_entry_size;
4292 /* After the 8192nd entry, room for two entries
4293 is allocated. */
4294 if (!htab->is_vxworks
4295 && (s->size - htab->plt_initial_entry_size)
4296 / htab->plt_entry_size
4297 > PLT_NUM_SINGLE_ENTRIES)
4298 s->size += htab->plt_entry_size;
a6aa5195 4299 }
28e99bb6 4300 ent->plt.offset = plt_offset;
a6aa5195 4301 }
25dbc73a 4302
a6aa5195
AM
4303 /* We also need to make an entry in the .rela.plt section. */
4304 if (!doneone)
4305 {
4306 htab->relplt->size += sizeof (Elf32_External_Rela);
9d8504b1
PB
4307
4308 if (htab->is_vxworks)
4309 {
4310 /* Allocate space for the unloaded relocations. */
4311 if (!info->shared)
4312 {
4313 if (ent->plt.offset
4314 == (bfd_vma) htab->plt_initial_entry_size)
4315 {
4316 htab->srelplt2->size
4317 += sizeof (Elf32_External_Rela)
4318 * VXWORKS_PLTRESOLVE_RELOCS;
4319 }
4320
4321 htab->srelplt2->size
4322 += sizeof (Elf32_External_Rela)
4323 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4324 }
4325
4326 /* Every PLT entry has an associated GOT entry in
4327 .got.plt. */
4328 htab->sgotplt->size += 4;
4329 }
a6aa5195
AM
4330 doneone = TRUE;
4331 }
4332 }
4333 else
4334 ent->plt.offset = (bfd_vma) -1;
4335
4336 if (!doneone)
4337 {
4338 h->plt.plist = NULL;
4339 h->needs_plt = 0;
4340 }
4341 }
25dbc73a
AM
4342 }
4343 else
4344 {
a6aa5195 4345 h->plt.plist = NULL;
25dbc73a
AM
4346 h->needs_plt = 0;
4347 }
4348
4349 eh = (struct ppc_elf_link_hash_entry *) h;
4350 if (eh->elf.got.refcount > 0)
4351 {
4352 /* Make sure this symbol is output as a dynamic symbol. */
4353 if (eh->elf.dynindx == -1
4354 && !eh->elf.forced_local)
4355 {
4356 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 4357 return FALSE;
25dbc73a 4358 }
252b5132 4359
25dbc73a
AM
4360 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4361 && !eh->elf.def_dynamic)
4362 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4363 eh->elf.got.offset = (bfd_vma) -1;
4364 else
4365 {
4366 bfd_boolean dyn;
3b36f7e6 4367 unsigned int need = 0;
25dbc73a 4368 if ((eh->tls_mask & TLS_TLS) != 0)
252b5132 4369 {
25dbc73a 4370 if ((eh->tls_mask & TLS_LD) != 0)
3b36f7e6 4371 need += 8;
25dbc73a 4372 if ((eh->tls_mask & TLS_GD) != 0)
3b36f7e6 4373 need += 8;
25dbc73a 4374 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
3b36f7e6 4375 need += 4;
25dbc73a 4376 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 4377 need += 4;
252b5132 4378 }
25dbc73a 4379 else
3b36f7e6
AM
4380 need += 4;
4381 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM
4382 dyn = htab->elf.dynamic_sections_created;
4383 if ((info->shared
4384 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4385 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4386 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 4387 {
3b36f7e6
AM
4388 /* All the entries we allocated need relocs.
4389 Except LD only needs one. */
25dbc73a 4390 if ((eh->tls_mask & TLS_LD) != 0)
3b36f7e6
AM
4391 need -= 4;
4392 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 4393 }
25dbc73a
AM
4394 }
4395 }
4396 else
4397 eh->elf.got.offset = (bfd_vma) -1;
252b5132 4398
25dbc73a
AM
4399 if (eh->dyn_relocs == NULL)
4400 return TRUE;
252b5132 4401
25dbc73a
AM
4402 /* In the shared -Bsymbolic case, discard space allocated for
4403 dynamic pc-relative relocs against symbols which turn out to be
4404 defined in regular objects. For the normal shared case, discard
4405 space for relocs that have become local due to symbol visibility
4406 changes. */
4407
4408 if (info->shared)
4409 {
4410 /* Relocs that use pc_count are those that appear on a call insn,
4411 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4412 generated via assembly. We want calls to protected symbols to
4413 resolve directly to the function rather than going via the plt.
4414 If people want function pointer comparisons to work as expected
4415 then they should avoid writing weird assembly. */
4416 if (SYMBOL_CALLS_LOCAL (info, h))
4417 {
4418 struct ppc_elf_dyn_relocs **pp;
4419
4420 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 4421 {
25dbc73a
AM
4422 p->count -= p->pc_count;
4423 p->pc_count = 0;
4424 if (p->count == 0)
4425 *pp = p->next;
4426 else
4427 pp = &p->next;
252b5132 4428 }
25dbc73a 4429 }
252b5132 4430
25dbc73a
AM
4431 /* Also discard relocs on undefined weak syms with non-default
4432 visibility. */
4433 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4434 && h->root.type == bfd_link_hash_undefweak)
4435 eh->dyn_relocs = NULL;
7619e7c7 4436
25dbc73a
AM
4437 /* Make sure undefined weak symbols are output as a dynamic symbol
4438 in PIEs. */
4439 if (info->pie
4440 && eh->dyn_relocs != NULL
4441 && h->dynindx == -1
4442 && h->root.type == bfd_link_hash_undefweak
4443 && !h->forced_local)
4444 {
4445 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4446 return FALSE;
4447 }
4448 }
4449 else if (ELIMINATE_COPY_RELOCS)
4450 {
4451 /* For the non-shared case, discard space for relocs against
4452 symbols which turn out to need copy relocs or are not
4453 dynamic. */
7619e7c7 4454
25dbc73a
AM
4455 if (!h->non_got_ref
4456 && h->def_dynamic
4457 && !h->def_regular)
4458 {
4459 /* Make sure this symbol is output as a dynamic symbol.
4460 Undefined weak syms won't yet be marked as dynamic. */
4461 if (h->dynindx == -1
4462 && !h->forced_local)
4463 {
4464 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4465 return FALSE;
4466 }
7619e7c7 4467
25dbc73a
AM
4468 /* If that succeeded, we know we'll be keeping all the
4469 relocs. */
4470 if (h->dynindx != -1)
4471 goto keep;
4472 }
252b5132 4473
25dbc73a 4474 eh->dyn_relocs = NULL;
252b5132 4475
25dbc73a
AM
4476 keep: ;
4477 }
252b5132 4478
25dbc73a
AM
4479 /* Finally, allocate space. */
4480 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4481 {
4482 asection *sreloc = elf_section_data (p->sec)->sreloc;
4483 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4484 }
252b5132 4485
25dbc73a
AM
4486 return TRUE;
4487}
7619e7c7 4488
25dbc73a 4489/* Find any dynamic relocs that apply to read-only sections. */
7619e7c7 4490
25dbc73a
AM
4491static bfd_boolean
4492readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4493{
4494 struct ppc_elf_dyn_relocs *p;
7619e7c7 4495
25dbc73a
AM
4496 if (h->root.type == bfd_link_hash_indirect)
4497 return TRUE;
252b5132 4498
25dbc73a
AM
4499 if (h->root.type == bfd_link_hash_warning)
4500 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 4501
25dbc73a
AM
4502 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4503 {
4504 asection *s = p->sec->output_section;
ee05f2fe 4505
25dbc73a
AM
4506 if (s != NULL
4507 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4508 == (SEC_READONLY | SEC_ALLOC)))
4509 {
4510 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 4511
25dbc73a
AM
4512 /* Not an error, just cut short the traversal. */
4513 return FALSE;
4514 }
4515 }
4516 return TRUE;
4517}
4518
4519/* Set the sizes of the dynamic sections. */
4520
4521static bfd_boolean
4522ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4523 struct bfd_link_info *info)
4524{
4525 struct ppc_elf_link_hash_table *htab;
4526 asection *s;
4527 bfd_boolean relocs;
4528 bfd *ibfd;
7fce784e 4529
252b5132 4530#ifdef DEBUG
25dbc73a 4531 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 4532#endif
252b5132 4533
25dbc73a
AM
4534 htab = ppc_elf_hash_table (info);
4535 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 4536
25dbc73a
AM
4537 if (elf_hash_table (info)->dynamic_sections_created)
4538 {
4539 /* Set the contents of the .interp section to the interpreter. */
4540 if (info->executable)
4541 {
4542 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4543 BFD_ASSERT (s != NULL);
4544 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4545 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4546 }
4547 }
252b5132 4548
d7128ce4
AM
4549 if (htab->old_plt)
4550 htab->got_header_size = 16;
4551 else
4552 htab->got_header_size = 12;
252b5132 4553
25dbc73a
AM
4554 /* Set up .got offsets for local syms, and space for local dynamic
4555 relocs. */
4556 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4557 {
4558 bfd_signed_vma *local_got;
4559 bfd_signed_vma *end_local_got;
4560 char *lgot_masks;
4561 bfd_size_type locsymcount;
4562 Elf_Internal_Shdr *symtab_hdr;
7fce784e 4563
d2663f46 4564 if (!is_ppc_elf_target (ibfd->xvec))
25dbc73a 4565 continue;
7fce784e 4566
25dbc73a
AM
4567 for (s = ibfd->sections; s != NULL; s = s->next)
4568 {
4569 struct ppc_elf_dyn_relocs *p;
252b5132 4570
25dbc73a
AM
4571 for (p = ((struct ppc_elf_dyn_relocs *)
4572 elf_section_data (s)->local_dynrel);
4573 p != NULL;
4574 p = p->next)
4575 {
4576 if (!bfd_is_abs_section (p->sec)
4577 && bfd_is_abs_section (p->sec->output_section))
4578 {
4579 /* Input section has been discarded, either because
4580 it is a copy of a linkonce section or due to
4581 linker script /DISCARD/, so we'll be discarding
4582 the relocs too. */
7fce784e 4583 }
25dbc73a 4584 else if (p->count != 0)
7fce784e 4585 {
25dbc73a
AM
4586 elf_section_data (p->sec)->sreloc->size
4587 += p->count * sizeof (Elf32_External_Rela);
4588 if ((p->sec->output_section->flags
4589 & (SEC_READONLY | SEC_ALLOC))
4590 == (SEC_READONLY | SEC_ALLOC))
4591 info->flags |= DF_TEXTREL;
7fce784e 4592 }
252b5132 4593 }
252b5132 4594 }
252b5132 4595
25dbc73a
AM
4596 local_got = elf_local_got_refcounts (ibfd);
4597 if (!local_got)
4598 continue;
252b5132 4599
25dbc73a
AM
4600 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4601 locsymcount = symtab_hdr->sh_info;
4602 end_local_got = local_got + locsymcount;
4603 lgot_masks = (char *) end_local_got;
25dbc73a
AM
4604 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4605 if (*local_got > 0)
4606 {
4607 if (*lgot_masks == (TLS_TLS | TLS_LD))
4608 {
4609 /* If just an LD reloc, we'll just use
4610 htab->tlsld_got.offset. */
3b36f7e6 4611 htab->tlsld_got.refcount += 1;
25dbc73a
AM
4612 *local_got = (bfd_vma) -1;
4613 }
4614 else
4615 {
3b36f7e6 4616 unsigned int need = 0;
25dbc73a
AM
4617 if ((*lgot_masks & TLS_TLS) != 0)
4618 {
4619 if ((*lgot_masks & TLS_GD) != 0)
3b36f7e6 4620 need += 8;
25dbc73a 4621 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
3b36f7e6 4622 need += 4;
25dbc73a 4623 if ((*lgot_masks & TLS_DTPREL) != 0)
3b36f7e6 4624 need += 4;
25dbc73a
AM
4625 }
4626 else
3b36f7e6
AM
4627 need += 4;
4628 *local_got = allocate_got (htab, need);
25dbc73a 4629 if (info->shared)
3b36f7e6
AM
4630 htab->relgot->size += (need
4631 * (sizeof (Elf32_External_Rela) / 4));
25dbc73a
AM
4632 }
4633 }
4634 else
4635 *local_got = (bfd_vma) -1;
4636 }
252b5132 4637
3b36f7e6
AM
4638 if (htab->tlsld_got.refcount > 0)
4639 {
4640 htab->tlsld_got.offset = allocate_got (htab, 8);
4641 if (info->shared)
4642 htab->relgot->size += sizeof (Elf32_External_Rela);
4643 }
4644 else
4645 htab->tlsld_got.offset = (bfd_vma) -1;
4646
9d8504b1
PB
4647 if (htab->is_vxworks)
4648 {
4649 /* Save the GOT and PLT symbols in the hash table for easy access.
4650 Mark them as having relocations; they might not, but we won't
4651 know for sure until we build the GOT in finish_dynamic_symbol. */
4652
4653 htab->hgot = elf_link_hash_lookup (elf_hash_table (info),
4654 "_GLOBAL_OFFSET_TABLE_",
4655 FALSE, FALSE, FALSE);
4656 if (htab->hgot)
4657 htab->hgot->indx = -2;
4658 htab->hplt = elf_link_hash_lookup (elf_hash_table (info),
4659 "_PROCEDURE_LINKAGE_TABLE_",
4660 FALSE, FALSE, FALSE);
4661 if (htab->hplt)
4662 htab->hplt->indx = -2;
4663 /* If the PLT is executable then give the symbol function type. */
4664 if (htab->hplt && htab->plt->flags & SEC_CODE)
4665 htab->hplt->type = STT_FUNC;
4666 }
4667
25dbc73a
AM
4668 /* Allocate space for global sym dynamic relocs. */
4669 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4670
9d8504b1 4671 if (htab->got != NULL && !htab->is_vxworks)
3b36f7e6
AM
4672 {
4673 unsigned int g_o_t = 32768;
4674
4675 /* If we haven't allocated the header, do so now. */
4676 if (htab->got->size <= 32768)
4677 {
4678 g_o_t = htab->got->size;
4679 htab->got->size += htab->got_header_size;
4680 }
9d8504b1 4681 if (htab->old_plt && !htab->is_vxworks)
d7128ce4 4682 g_o_t += 4;
3b36f7e6
AM
4683
4684 htab->elf.hgot->root.u.def.value = g_o_t;
4685 }
4686
d7128ce4
AM
4687 if (htab->glink != NULL && htab->glink->size != 0)
4688 {
4689 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM
4690 /* Space for the branch table. */
4691 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4692 /* Pad out to align the start of PLTresolve. */
4693 htab->glink->size += -htab->glink->size & 15;
d7128ce4
AM
4694 htab->glink->size += GLINK_PLTRESOLVE;
4695 }
4696
25dbc73a
AM
4697 /* We've now determined the sizes of the various dynamic sections.
4698 Allocate memory for them. */
4699 relocs = FALSE;
4700 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 4701 {
9d8504b1
PB
4702 bfd_boolean strip_section = TRUE;
4703
25dbc73a
AM
4704 if ((s->flags & SEC_LINKER_CREATED) == 0)
4705 continue;
252b5132 4706
25dbc73a 4707 if (s == htab->plt
d7128ce4 4708 || s == htab->glink
644285ef 4709 || s == htab->got
9d8504b1 4710 || s == htab->sgotplt
c456f082
AM
4711 || s == htab->sbss
4712 || s == htab->dynbss
4713 || s == htab->dynsbss)
25dbc73a 4714 {
9d8504b1
PB
4715 /* We'd like to strip these sections if they aren't needed, but if
4716 we've exported dynamic symbols from them we must leave them.
4717 It's too late to tell BFD to get rid of the symbols. */
4718 if ((s == htab->plt || s == htab->got) && htab->hplt != NULL)
4719 strip_section = FALSE;
25dbc73a
AM
4720 /* Strip this section if we don't need it; see the
4721 comment below. */
4722 }
c9a2f333
AM
4723 else if (s == htab->sdata[0].section
4724 || s == htab->sdata[1].section)
25dbc73a 4725 {
c9a2f333 4726 /* Strip these too. */
25dbc73a
AM
4727 }
4728 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4729 {
c456f082 4730 if (s->size != 0)
25dbc73a
AM
4731 {
4732 /* Remember whether there are any relocation sections. */
4733 relocs = TRUE;
252b5132 4734
25dbc73a
AM
4735 /* We use the reloc_count field as a counter if we need
4736 to copy relocs into the output file. */
4737 s->reloc_count = 0;
252b5132
RH
4738 }
4739 }
25dbc73a
AM
4740 else
4741 {
4742 /* It's not one of our sections, so don't allocate space. */
4743 continue;
4744 }
252b5132 4745
9d8504b1 4746 if (s->size == 0 && strip_section)
25dbc73a 4747 {
c456f082
AM
4748 /* If we don't need this section, strip it from the
4749 output file. This is mostly to handle .rela.bss and
4750 .rela.plt. We must create both sections in
4751 create_dynamic_sections, because they must be created
4752 before the linker maps input sections to output
4753 sections. The linker does that before
4754 adjust_dynamic_symbol is called, and it is that
4755 function which decides whether anything needs to go
4756 into these sections. */
8423293d 4757 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
4758 continue;
4759 }
7fce784e 4760
d7128ce4 4761 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
4762 continue;
4763
25dbc73a
AM
4764 /* Allocate memory for the section contents. */
4765 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4766 if (s->contents == NULL)
4767 return FALSE;
4768 }
252b5132 4769
25dbc73a 4770 if (htab->elf.dynamic_sections_created)
7619e7c7 4771 {
25dbc73a
AM
4772 /* Add some entries to the .dynamic section. We fill in the
4773 values later, in ppc_elf_finish_dynamic_sections, but we
4774 must add the entries now so that we get the correct size for
4775 the .dynamic section. The DT_DEBUG entry is filled in by the
4776 dynamic linker and used by the debugger. */
4777#define add_dynamic_entry(TAG, VAL) \
4778 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 4779
25dbc73a 4780 if (info->executable)
7619e7c7 4781 {
25dbc73a
AM
4782 if (!add_dynamic_entry (DT_DEBUG, 0))
4783 return FALSE;
7619e7c7
AM
4784 }
4785
25dbc73a 4786 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 4787 {
25dbc73a
AM
4788 if (!add_dynamic_entry (DT_PLTGOT, 0)
4789 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4790 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4791 || !add_dynamic_entry (DT_JMPREL, 0))
4792 return FALSE;
4793 }
7619e7c7 4794
d7128ce4
AM
4795 if (htab->glink != NULL && htab->glink->size != 0)
4796 {
1fe44d79 4797 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4
AM
4798 return FALSE;
4799 }
4800
25dbc73a
AM
4801 if (relocs)
4802 {
4803 if (!add_dynamic_entry (DT_RELA, 0)
4804 || !add_dynamic_entry (DT_RELASZ, 0)
4805 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4806 return FALSE;
4807 }
7619e7c7 4808
25dbc73a
AM
4809 /* If any dynamic relocs apply to a read-only section, then we
4810 need a DT_TEXTREL entry. */
4811 if ((info->flags & DF_TEXTREL) == 0)
4812 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4813 info);
7619e7c7 4814
25dbc73a
AM
4815 if ((info->flags & DF_TEXTREL) != 0)
4816 {
4817 if (!add_dynamic_entry (DT_TEXTREL, 0))
4818 return FALSE;
7619e7c7
AM
4819 }
4820 }
25dbc73a
AM
4821#undef add_dynamic_entry
4822
7619e7c7
AM
4823 return TRUE;
4824}
25dbc73a
AM
4825\f
4826#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4827
4828static const int shared_stub_entry[] =
4829 {
4830 0x7c0802a6, /* mflr 0 */
4831 0x429f0005, /* bcl 20, 31, .Lxxx */
4832 0x7d6802a6, /* mflr 11 */
4833 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4834 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4835 0x7c0803a6, /* mtlr 0 */
4836 0x7d6903a6, /* mtctr 11 */
4837 0x4e800420, /* bctr */
4838 };
4839
4840static const int stub_entry[] =
4841 {
4842 0x3d600000, /* lis 11,xxx@ha */
4843 0x396b0000, /* addi 11,11,xxx@l */
4844 0x7d6903a6, /* mtctr 11 */
4845 0x4e800420, /* bctr */
4846 };
4847
4848static bfd_boolean
4849ppc_elf_relax_section (bfd *abfd,
4850 asection *isec,
4851 struct bfd_link_info *link_info,
4852 bfd_boolean *again)
4853{
4854 struct one_fixup
4855 {
4856 struct one_fixup *next;
4857 asection *tsec;
4858 bfd_vma toff;
4859 bfd_vma trampoff;
4860 };
7619e7c7 4861
25dbc73a
AM
4862 Elf_Internal_Shdr *symtab_hdr;
4863 bfd_byte *contents = NULL;
4864 Elf_Internal_Sym *isymbuf = NULL;
4865 Elf_Internal_Rela *internal_relocs = NULL;
4866 Elf_Internal_Rela *irel, *irelend;
4867 struct one_fixup *fixups = NULL;
4868 bfd_boolean changed;
d7128ce4 4869 struct ppc_elf_link_hash_table *htab;
25dbc73a 4870 bfd_size_type trampoff;
a6aa5195 4871 asection *got2;
7619e7c7 4872
25dbc73a 4873 *again = FALSE;
7619e7c7 4874
c87b5a93
AM
4875 /* Nothing to do if there are no relocations, and no need to do
4876 anything with non-alloc sections. */
4877 if ((isec->flags & SEC_ALLOC) == 0
4878 || (isec->flags & SEC_RELOC) == 0
4879 || isec->reloc_count == 0)
25dbc73a 4880 return TRUE;
7619e7c7 4881
25dbc73a
AM
4882 trampoff = (isec->size + 3) & (bfd_vma) -4;
4883 /* Space for a branch around any trampolines. */
4884 trampoff += 4;
7619e7c7 4885
25dbc73a 4886 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7619e7c7 4887
25dbc73a
AM
4888 /* Get a copy of the native relocations. */
4889 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
4890 link_info->keep_memory);
4891 if (internal_relocs == NULL)
4892 goto error_return;
7619e7c7 4893
d7128ce4 4894 htab = ppc_elf_hash_table (link_info);
a6aa5195 4895 got2 = bfd_get_section_by_name (abfd, ".got2");
7619e7c7 4896
a6aa5195 4897 irelend = internal_relocs + isec->reloc_count;
25dbc73a 4898 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 4899 {
25dbc73a
AM
4900 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
4901 bfd_vma symaddr, reladdr, toff, roff;
4902 asection *tsec;
4903 struct one_fixup *f;
4904 size_t insn_offset = 0;
4905 bfd_vma max_branch_offset, val;
4906 bfd_byte *hit_addr;
4907 unsigned long t0;
4908 unsigned char sym_type;
7619e7c7 4909
25dbc73a
AM
4910 switch (r_type)
4911 {
4912 case R_PPC_REL24:
4913 case R_PPC_LOCAL24PC:
4914 case R_PPC_PLTREL24:
4915 max_branch_offset = 1 << 25;
4916 break;
7619e7c7 4917
25dbc73a
AM
4918 case R_PPC_REL14:
4919 case R_PPC_REL14_BRTAKEN:
4920 case R_PPC_REL14_BRNTAKEN:
4921 max_branch_offset = 1 << 15;
4922 break;
7619e7c7 4923
25dbc73a
AM
4924 default:
4925 continue;
4926 }
7619e7c7 4927
25dbc73a
AM
4928 /* Get the value of the symbol referred to by the reloc. */
4929 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4930 {
4931 /* A local symbol. */
4932 Elf_Internal_Sym *isym;
7fce784e 4933
25dbc73a
AM
4934 /* Read this BFD's local symbols. */
4935 if (isymbuf == NULL)
4936 {
4937 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4938 if (isymbuf == NULL)
4939 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4940 symtab_hdr->sh_info, 0,
4941 NULL, NULL, NULL);
4942 if (isymbuf == 0)
4943 goto error_return;
4944 }
4945 isym = isymbuf + ELF32_R_SYM (irel->r_info);
4946 if (isym->st_shndx == SHN_UNDEF)
4947 continue; /* We can't do anything with undefined symbols. */
4948 else if (isym->st_shndx == SHN_ABS)
4949 tsec = bfd_abs_section_ptr;
4950 else if (isym->st_shndx == SHN_COMMON)
4951 tsec = bfd_com_section_ptr;
4952 else
4953 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 4954
25dbc73a
AM
4955 toff = isym->st_value;
4956 sym_type = ELF_ST_TYPE (isym->st_info);
4957 }
4958 else
4959 {
4960 /* Global symbol handling. */
4961 unsigned long indx;
4962 struct elf_link_hash_entry *h;
7619e7c7 4963
25dbc73a
AM
4964 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4965 h = elf_sym_hashes (abfd)[indx];
7619e7c7 4966
25dbc73a
AM
4967 while (h->root.type == bfd_link_hash_indirect
4968 || h->root.type == bfd_link_hash_warning)
4969 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 4970
a6aa5195
AM
4971 tsec = NULL;
4972 toff = 0;
25dbc73a 4973 if (r_type == R_PPC_PLTREL24
a6aa5195 4974 && htab->plt != NULL)
25dbc73a 4975 {
a6aa5195
AM
4976 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
4977
4978 if (ent != NULL)
d7128ce4 4979 {
a6aa5195
AM
4980 if (!htab->old_plt)
4981 {
4982 tsec = htab->glink;
4983 toff = ent->glink_offset;
4984 }
4985 else
4986 {
4987 tsec = htab->plt;
4988 toff = ent->plt.offset;
4989 }
d7128ce4 4990 }
25dbc73a 4991 }
a6aa5195
AM
4992 if (tsec != NULL)
4993 ;
25dbc73a
AM
4994 else if (h->root.type == bfd_link_hash_defined
4995 || h->root.type == bfd_link_hash_defweak)
4996 {
4997 tsec = h->root.u.def.section;
4998 toff = h->root.u.def.value;
4999 }
5000 else
5001 continue;
7619e7c7 5002
25dbc73a
AM
5003 sym_type = h->type;
5004 }
7619e7c7 5005
25dbc73a
AM
5006 /* If the branch and target are in the same section, you have
5007 no hope of adding stubs. We'll error out later should the
5008 branch overflow. */
5009 if (tsec == isec)
5010 continue;
5011
5012 /* There probably isn't any reason to handle symbols in
5013 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5014 attribute for a code section, and we are only looking at
5015 branches. However, implement it correctly here as a
5016 reference for other target relax_section functions. */
5017 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5018 {
5019 /* At this stage in linking, no SEC_MERGE symbol has been
5020 adjusted, so all references to such symbols need to be
5021 passed through _bfd_merged_section_offset. (Later, in
5022 relocate_section, all SEC_MERGE symbols *except* for
5023 section symbols have been adjusted.)
5024
5025 gas may reduce relocations against symbols in SEC_MERGE
5026 sections to a relocation against the section symbol when
5027 the original addend was zero. When the reloc is against
5028 a section symbol we should include the addend in the
5029 offset passed to _bfd_merged_section_offset, since the
5030 location of interest is the original symbol. On the
5031 other hand, an access to "sym+addend" where "sym" is not
5032 a section symbol should not include the addend; Such an
5033 access is presumed to be an offset from "sym"; The
5034 location of interest is just "sym". */
5035 if (sym_type == STT_SECTION)
5036 toff += irel->r_addend;
7619e7c7 5037
25dbc73a
AM
5038 toff = _bfd_merged_section_offset (abfd, &tsec,
5039 elf_section_data (tsec)->sec_info,
5040 toff);
7619e7c7 5041
25dbc73a
AM
5042 if (sym_type != STT_SECTION)
5043 toff += irel->r_addend;
5044 }
a6aa5195
AM
5045 /* PLTREL24 addends are special. */
5046 else if (r_type != R_PPC_PLTREL24)
25dbc73a 5047 toff += irel->r_addend;
7619e7c7 5048
25dbc73a 5049 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7619e7c7 5050
25dbc73a
AM
5051 roff = irel->r_offset;
5052 reladdr = isec->output_section->vma + isec->output_offset + roff;
7619e7c7 5053
25dbc73a
AM
5054 /* If the branch is in range, no need to do anything. */
5055 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5056 continue;
252b5132 5057
25dbc73a
AM
5058 /* Look for an existing fixup to this address. */
5059 for (f = fixups; f ; f = f->next)
5060 if (f->tsec == tsec && f->toff == toff)
5061 break;
5062
5063 if (f == NULL)
7619e7c7 5064 {
25dbc73a
AM
5065 size_t size;
5066 unsigned long stub_rtype;
252b5132 5067
25dbc73a
AM
5068 val = trampoff - roff;
5069 if (val >= max_branch_offset)
5070 /* Oh dear, we can't reach a trampoline. Don't try to add
5071 one. We'll report an error later. */
5072 continue;
252b5132 5073
25dbc73a
AM
5074 if (link_info->shared)
5075 {
5076 size = 4 * ARRAY_SIZE (shared_stub_entry);
5077 insn_offset = 12;
5078 stub_rtype = R_PPC_RELAX32PC;
5079 }
5080 else
5081 {
5082 size = 4 * ARRAY_SIZE (stub_entry);
5083 insn_offset = 0;
5084 stub_rtype = R_PPC_RELAX32;
5085 }
dc810e39 5086
25dbc73a
AM
5087 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5088 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5089 abort ();
d7128ce4
AM
5090 if (tsec == htab->plt
5091 || tsec == htab->glink)
25dbc73a 5092 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
252b5132 5093
25dbc73a
AM
5094 /* Hijack the old relocation. Since we need two
5095 relocations for this use a "composite" reloc. */
5096 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5097 stub_rtype);
5098 irel->r_offset = trampoff + insn_offset;
252b5132 5099
25dbc73a
AM
5100 /* Record the fixup so we don't do it again this section. */
5101 f = bfd_malloc (sizeof (*f));
5102 f->next = fixups;
5103 f->tsec = tsec;
5104 f->toff = toff;
5105 f->trampoff = trampoff;
5106 fixups = f;
252b5132 5107
25dbc73a
AM
5108 trampoff += size;
5109 }
5110 else
5111 {
5112 val = f->trampoff - roff;
5113 if (val >= max_branch_offset)
5114 continue;
252b5132 5115
25dbc73a
AM
5116 /* Nop out the reloc, since we're finalizing things here. */
5117 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5118 }
252b5132 5119
25dbc73a
AM
5120 /* Get the section contents. */
5121 if (contents == NULL)
5122 {
5123 /* Get cached copy if it exists. */
5124 if (elf_section_data (isec)->this_hdr.contents != NULL)
5125 contents = elf_section_data (isec)->this_hdr.contents;
5126 else
5127 {
5128 /* Go get them off disk. */
5129 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5130 goto error_return;
5131 }
5132 }
252b5132 5133
25dbc73a
AM
5134 /* Fix up the existing branch to hit the trampoline. */
5135 hit_addr = contents + roff;
5136 switch (r_type)
5137 {
5138 case R_PPC_REL24:
5139 case R_PPC_LOCAL24PC:
5140 case R_PPC_PLTREL24:
5141 t0 = bfd_get_32 (abfd, hit_addr);
5142 t0 &= ~0x3fffffc;
5143 t0 |= val & 0x3fffffc;
5144 bfd_put_32 (abfd, t0, hit_addr);
5145 break;
252b5132 5146
25dbc73a
AM
5147 case R_PPC_REL14:
5148 case R_PPC_REL14_BRTAKEN:
5149 case R_PPC_REL14_BRNTAKEN:
5150 t0 = bfd_get_32 (abfd, hit_addr);
5151 t0 &= ~0xfffc;
5152 t0 |= val & 0xfffc;
5153 bfd_put_32 (abfd, t0, hit_addr);
5154 break;
5155 }
5156 }
252b5132 5157
25dbc73a
AM
5158 /* Write out the trampolines. */
5159 changed = fixups != NULL;
5160 if (fixups != NULL)
5161 {
5162 const int *stub;
5163 bfd_byte *dest;
5164 bfd_vma val;
5165 int i, size;
252b5132 5166
25dbc73a
AM
5167 do
5168 {
5169 struct one_fixup *f = fixups;
5170 fixups = fixups->next;
5171 free (f);
5172 }
5173 while (fixups);
252b5132 5174
25dbc73a
AM
5175 contents = bfd_realloc (contents, trampoff);
5176 if (contents == NULL)
5177 goto error_return;
252b5132 5178
25dbc73a
AM
5179 isec->size = (isec->size + 3) & (bfd_vma) -4;
5180 /* Branch around the trampolines. */
5181 val = trampoff - isec->size + 0x48000000;
5182 dest = contents + isec->size;
5183 isec->size = trampoff;
5184 bfd_put_32 (abfd, val, dest);
5185 dest += 4;
252b5132 5186
25dbc73a
AM
5187 if (link_info->shared)
5188 {
5189 stub = shared_stub_entry;
5190 size = ARRAY_SIZE (shared_stub_entry);
5191 }
5192 else
5193 {
5194 stub = stub_entry;
5195 size = ARRAY_SIZE (stub_entry);
5196 }
252b5132 5197
25dbc73a
AM
5198 i = 0;
5199 while (dest < contents + trampoff)
252b5132 5200 {
25dbc73a
AM
5201 bfd_put_32 (abfd, stub[i], dest);
5202 i++;
5203 if (i == size)
5204 i = 0;
5205 dest += 4;
252b5132 5206 }
25dbc73a 5207 BFD_ASSERT (i == 0);
252b5132
RH
5208 }
5209
25dbc73a
AM
5210 if (isymbuf != NULL
5211 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 5212 {
25dbc73a
AM
5213 if (! link_info->keep_memory)
5214 free (isymbuf);
252b5132 5215 else
25dbc73a
AM
5216 {
5217 /* Cache the symbols for elf_link_input_bfd. */
5218 symtab_hdr->contents = (unsigned char *) isymbuf;
5219 }
252b5132
RH
5220 }
5221
25dbc73a
AM
5222 if (contents != NULL
5223 && elf_section_data (isec)->this_hdr.contents != contents)
5224 {
5225 if (!changed && !link_info->keep_memory)
5226 free (contents);
5227 else
5228 {
5229 /* Cache the section contents for elf_link_input_bfd. */
5230 elf_section_data (isec)->this_hdr.contents = contents;
5231 }
5232 }
252b5132 5233
25dbc73a
AM
5234 if (elf_section_data (isec)->relocs != internal_relocs)
5235 {
5236 if (!changed)
5237 free (internal_relocs);
5238 else
5239 elf_section_data (isec)->relocs = internal_relocs;
5240 }
252b5132 5241
25dbc73a 5242 *again = changed;
b34976b6 5243 return TRUE;
25dbc73a
AM
5244
5245 error_return:
5246 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5247 free (isymbuf);
5248 if (contents != NULL
5249 && elf_section_data (isec)->this_hdr.contents != contents)
5250 free (contents);
5251 if (internal_relocs != NULL
5252 && elf_section_data (isec)->relocs != internal_relocs)
5253 free (internal_relocs);
5254 return FALSE;
252b5132 5255}
252b5132 5256\f
f85f57ad
AM
5257/* Set _SDA_BASE_, _SDA2_BASE, and sbss start and end syms. They are
5258 set here rather than via PROVIDE in the default linker script,
5259 because using PROVIDE inside an output section statement results in
5260 unnecessary output sections. Using PROVIDE outside an output section
5261 statement runs the risk of section alignment affecting where the
5262 section starts. */
c9a2f333
AM
5263
5264bfd_boolean
5265ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
5266{
5267 struct ppc_elf_link_hash_table *htab;
5268 unsigned i;
f85f57ad
AM
5269 asection *s;
5270 bfd_vma val;
c9a2f333
AM
5271
5272 htab = ppc_elf_hash_table (info);
5273
5274 for (i = 0; i < 2; i++)
5275 {
5276 elf_linker_section_t *lsect = &htab->sdata[i];
c9a2f333
AM
5277
5278 s = lsect->section;
5279 if (s != NULL)
5280 s = s->output_section;
5281 if (s == NULL)
5282 s = bfd_get_section_by_name (obfd, lsect->name);
5283 if (s == NULL)
5284 s = bfd_get_section_by_name (obfd, lsect->bss_name);
5285
3b2175db
PB
5286 if (s)
5287 {
5288 /* VxWorks executables are relocatable, so the sdata base symbols
5289 must be section-relative. If the section is zero sized leave
5290 them as absolute symbols to avoid creationg an unused
5291 output section. */
5292 val = 32768;
5293 lsect->sym_val = val + s->vma;
5294 if (s->size == 0)
5295 {
5296 val += s->vma;
5297 s = NULL;
5298 }
5299 }
5300 else
5301 {
5302 val = 0;
5303 lsect->sym_val = 0;
5304 }
c9a2f333 5305
3b2175db 5306 _bfd_elf_provide_symbol (info, lsect->sym_name, val, s);
c9a2f333 5307 }
f85f57ad
AM
5308
5309 s = bfd_get_section_by_name (obfd, ".sbss");
3b2175db
PB
5310 _bfd_elf_provide_symbol (info, "__sbss_start", 0, NULL);
5311 _bfd_elf_provide_symbol (info, "___sbss_start", 0, NULL);
f85f57ad 5312 if (s != NULL)
3b2175db
PB
5313 val = s->size;
5314 else
5315 val = 0;
5316 _bfd_elf_provide_symbol (info, "__sbss_end", val, s);
5317 _bfd_elf_provide_symbol (info, "___sbss_end", val, s);
c9a2f333
AM
5318 return TRUE;
5319}
5320\f
25dbc73a 5321/* Fill in the address for a pointer generated in a linker section. */
252b5132 5322
25dbc73a 5323static bfd_vma
76750a2f 5324elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
5325 elf_linker_section_t *lsect,
5326 struct elf_link_hash_entry *h,
5327 bfd_vma relocation,
2bb04cf2 5328 const Elf_Internal_Rela *rel)
25dbc73a
AM
5329{
5330 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 5331
25dbc73a 5332 BFD_ASSERT (lsect != NULL);
252b5132 5333
25dbc73a 5334 if (h != NULL)
252b5132 5335 {
25dbc73a
AM
5336 /* Handle global symbol. */
5337 struct ppc_elf_link_hash_entry *eh;
252b5132 5338
25dbc73a 5339 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
5340 BFD_ASSERT (eh->elf.def_regular);
5341 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
5342 }
5343 else
5344 {
5345 /* Handle local symbol. */
5346 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 5347
25dbc73a 5348 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
5349 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5350 }
252b5132 5351
76750a2f
AM
5352 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5353 rel->r_addend,
5354 lsect);
5355 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 5356
76750a2f
AM
5357 /* Offset will always be a multiple of four, so use the bottom bit
5358 as a "written" flag. */
5359 if ((linker_section_ptr->offset & 1) == 0)
5360 {
5361 bfd_put_32 (lsect->section->owner,
5362 relocation + linker_section_ptr->addend,
5363 lsect->section->contents + linker_section_ptr->offset);
5364 linker_section_ptr->offset += 1;
252b5132
RH
5365 }
5366
25dbc73a 5367 relocation = (lsect->section->output_offset
76750a2f 5368 + linker_section_ptr->offset - 1
c9a2f333 5369 - 0x8000);
252b5132 5370
25dbc73a
AM
5371#ifdef DEBUG
5372 fprintf (stderr,
5373 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5374 lsect->name, (long) relocation, (long) relocation);
5375#endif
252b5132 5376
25dbc73a
AM
5377 /* Subtract out the addend, because it will get added back in by the normal
5378 processing. */
5379 return relocation - linker_section_ptr->addend;
252b5132 5380}
25dbc73a 5381
252b5132
RH
5382/* The RELOCATE_SECTION function is called by the ELF backend linker
5383 to handle the relocations for a section.
5384
5385 The relocs are always passed as Rela structures; if the section
5386 actually uses Rel structures, the r_addend field will always be
5387 zero.
5388
5389 This function is responsible for adjust the section contents as
5390 necessary, and (if using Rela relocs and generating a
1049f94e 5391 relocatable output file) adjusting the reloc addend as
252b5132
RH
5392 necessary.
5393
5394 This function does not have to worry about setting the reloc
5395 address or the reloc symbol index.
5396
5397 LOCAL_SYMS is a pointer to the swapped in local symbols.
5398
5399 LOCAL_SECTIONS is an array giving the section in the input file
5400 corresponding to the st_shndx field of each local symbol.
5401
5402 The global hash table entry for the global symbols can be found
5403 via elf_sym_hashes (input_bfd).
5404
1049f94e 5405 When generating relocatable output, this function must handle
252b5132
RH
5406 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5407 going to be the section symbol corresponding to the output
5408 section, which means that the addend must be adjusted
5409 accordingly. */
5410
b34976b6 5411static bfd_boolean
55fd94b0
AM
5412ppc_elf_relocate_section (bfd *output_bfd,
5413 struct bfd_link_info *info,
5414 bfd *input_bfd,
5415 asection *input_section,
5416 bfd_byte *contents,
5417 Elf_Internal_Rela *relocs,
5418 Elf_Internal_Sym *local_syms,
5419 asection **local_sections)
252b5132 5420{
7619e7c7
AM
5421 Elf_Internal_Shdr *symtab_hdr;
5422 struct elf_link_hash_entry **sym_hashes;
5423 struct ppc_elf_link_hash_table *htab;
5424 Elf_Internal_Rela *rel;
5425 Elf_Internal_Rela *relend;
5426 Elf_Internal_Rela outrel;
5427 bfd_byte *loc;
a6aa5195 5428 asection *got2, *sreloc = NULL;
252b5132 5429 bfd_vma *local_got_offsets;
b34976b6 5430 bfd_boolean ret = TRUE;
b34976b6 5431
252b5132 5432#ifdef DEBUG
d003868e
AM
5433 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5434 "%ld relocations%s",
5435 input_bfd, input_section,
5436 (long) input_section->reloc_count,
5437 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH
5438#endif
5439
a6aa5195
AM
5440 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5441
1049f94e 5442 if (info->relocatable)
a6aa5195
AM
5443 {
5444 if (got2 == NULL)
5445 return TRUE;
5446
5447 rel = relocs;
5448 relend = relocs + input_section->reloc_count;
5449 for (; rel < relend; rel++)
5450 {
5451 enum elf_ppc_reloc_type r_type;
5452
5453 r_type = ELF32_R_TYPE (rel->r_info);
5454 if (r_type == R_PPC_PLTREL24
5455 && rel->r_addend >= 32768)
5456 {
5457 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5458 addend specifies the GOT pointer offset within .got2. */
5459 rel->r_addend += got2->output_offset;
5460 }
5461 }
5462 return TRUE;
5463 }
b491616a 5464
e47cd125 5465 /* Initialize howto table if not already done. */
8da6118f 5466 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
5467 ppc_elf_howto_init ();
5468
7619e7c7 5469 htab = ppc_elf_hash_table (info);
252b5132 5470 local_got_offsets = elf_local_got_offsets (input_bfd);
7619e7c7
AM
5471 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5472 sym_hashes = elf_sym_hashes (input_bfd);
5473 rel = relocs;
5474 relend = relocs + input_section->reloc_count;
252b5132
RH
5475 for (; rel < relend; rel++)
5476 {
7619e7c7
AM
5477 enum elf_ppc_reloc_type r_type;
5478 bfd_vma addend;
5479 bfd_reloc_status_type r;
5480 Elf_Internal_Sym *sym;
5481 asection *sec;
5482 struct elf_link_hash_entry *h;
5483 const char *sym_name;
252b5132
RH
5484 reloc_howto_type *howto;
5485 unsigned long r_symndx;
5486 bfd_vma relocation;
7619e7c7 5487 bfd_vma branch_bit, insn, from;
7619e7c7
AM
5488 bfd_boolean unresolved_reloc;
5489 bfd_boolean warned;
5490 unsigned int tls_type, tls_mask, tls_gd;
5491
55fd94b0
AM
5492 r_type = ELF32_R_TYPE (rel->r_info);
5493 sym = NULL;
5494 sec = NULL;
5495 h = NULL;
7619e7c7
AM
5496 unresolved_reloc = FALSE;
5497 warned = FALSE;
252b5132 5498 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 5499
252b5132
RH
5500 if (r_symndx < symtab_hdr->sh_info)
5501 {
5502 sym = local_syms + r_symndx;
5503 sec = local_sections[r_symndx];
26c61ae5 5504 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 5505
8517fae7 5506 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
5507 }
5508 else
5509 {
b2a8e766
AM
5510 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5511 r_symndx, symtab_hdr, sym_hashes,
5512 h, sec, relocation,
5513 unresolved_reloc, warned);
9abc968f 5514
252b5132 5515 sym_name = h->root.root.string;
7619e7c7
AM
5516 }
5517
5518 /* TLS optimizations. Replace instruction sequences and relocs
5519 based on information we collected in tls_optimize. We edit
5520 RELOCS so that --emit-relocs will output something sensible
5521 for the final instruction stream. */
5522 tls_mask = 0;
5523 tls_gd = 0;
5524 if (IS_PPC_TLS_RELOC (r_type))
5525 {
5526 if (h != NULL)
5527 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5528 else if (local_got_offsets != NULL)
5529 {
5530 char *lgot_masks;
5531 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5532 tls_mask = lgot_masks[r_symndx];
5533 }
5534 }
5535
5536 /* Ensure reloc mapping code below stays sane. */
5537 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5538 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5539 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5540 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5541 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5542 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5543 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5544 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5545 abort ();
5546 switch (r_type)
5547 {
5548 default:
5549 break;
5550
5551 case R_PPC_GOT_TPREL16:
5552 case R_PPC_GOT_TPREL16_LO:
5553 if (tls_mask != 0
5554 && (tls_mask & TLS_TPREL) == 0)
5555 {
5556 bfd_vma insn;
5557 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
5558 insn &= 31 << 21;
5559 insn |= 0x3c020000; /* addis 0,2,0 */
5560 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
5561 r_type = R_PPC_TPREL16_HA;
5562 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5563 }
5564 break;
5565
5566 case R_PPC_TLS:
5567 if (tls_mask != 0
5568 && (tls_mask & TLS_TPREL) == 0)
5569 {
5570 bfd_vma insn, rtra;
5571 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5572 if ((insn & ((31 << 26) | (31 << 11)))
5573 == ((31 << 26) | (2 << 11)))
5574 rtra = insn & ((1 << 26) - (1 << 16));
5575 else if ((insn & ((31 << 26) | (31 << 16)))
5576 == ((31 << 26) | (2 << 16)))
5577 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5578 else
5579 abort ();
5580 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5581 /* add -> addi. */
5582 insn = 14 << 26;
5583 else if ((insn & (31 << 1)) == 23 << 1
5584 && ((insn & (31 << 6)) < 14 << 6
5585 || ((insn & (31 << 6)) >= 16 << 6
5586 && (insn & (31 << 6)) < 24 << 6)))
5587 /* load and store indexed -> dform. */
5588 insn = (32 | ((insn >> 6) & 31)) << 26;
5589 else if ((insn & (31 << 1)) == 21 << 1
5590 && (insn & (0x1a << 6)) == 0)
5591 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5592 insn = (((58 | ((insn >> 6) & 4)) << 26)
5593 | ((insn >> 6) & 1));
5594 else if ((insn & (31 << 1)) == 21 << 1
5595 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5596 /* lwax -> lwa. */
5597 insn = (58 << 26) | 2;
5598 else
5599 abort ();
5600 insn |= rtra;
5601 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5602 r_type = R_PPC_TPREL16_LO;
5603 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5604 /* Was PPC_TLS which sits on insn boundary, now
5605 PPC_TPREL16_LO which is at insn+2. */
5606 rel->r_offset += 2;
5607 }
5608 break;
5609
5610 case R_PPC_GOT_TLSGD16_HI:
5611 case R_PPC_GOT_TLSGD16_HA:
5612 tls_gd = TLS_TPRELGD;
5613 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5614 goto tls_gdld_hi;
5615 break;
5616
5617 case R_PPC_GOT_TLSLD16_HI:
5618 case R_PPC_GOT_TLSLD16_HA:
5619 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5620 {
5621 tls_gdld_hi:
5622 if ((tls_mask & tls_gd) != 0)
5623 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5624 + R_PPC_GOT_TPREL16);
5625 else
5626 {
5627 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5628 rel->r_offset -= 2;
5629 r_type = R_PPC_NONE;
5630 }
5631 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5632 }
5633 break;
5634
5635 case R_PPC_GOT_TLSGD16:
5636 case R_PPC_GOT_TLSGD16_LO:
5637 tls_gd = TLS_TPRELGD;
5638 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5639 goto tls_get_addr_check;
5640 break;
5641
5642 case R_PPC_GOT_TLSLD16:
5643 case R_PPC_GOT_TLSLD16_LO:
5644 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5645 {
5646 tls_get_addr_check:
5647 if (rel + 1 < relend)
5648 {
5649 enum elf_ppc_reloc_type r_type2;
5650 unsigned long r_symndx2;
5651 struct elf_link_hash_entry *h2;
87d243f1 5652 bfd_vma insn1, insn2;
7619e7c7
AM
5653 bfd_vma offset;
5654
5655 /* The next instruction should be a call to
5656 __tls_get_addr. Peek at the reloc to be sure. */
55fd94b0 5657 r_type2 = ELF32_R_TYPE (rel[1].r_info);
7619e7c7
AM
5658 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5659 if (r_symndx2 < symtab_hdr->sh_info
5660 || (r_type2 != R_PPC_REL14
5661 && r_type2 != R_PPC_REL14_BRTAKEN
5662 && r_type2 != R_PPC_REL14_BRNTAKEN
5663 && r_type2 != R_PPC_REL24
5664 && r_type2 != R_PPC_PLTREL24))
5665 break;
5666
5667 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5668 while (h2->root.type == bfd_link_hash_indirect
5669 || h2->root.type == bfd_link_hash_warning)
5670 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5671 if (h2 == NULL || h2 != htab->tls_get_addr)
5672 break;
5673
5674 /* OK, it checks out. Replace the call. */
5675 offset = rel[1].r_offset;
5676 insn1 = bfd_get_32 (output_bfd,
5677 contents + rel->r_offset - 2);
7619e7c7
AM
5678 if ((tls_mask & tls_gd) != 0)
5679 {
5680 /* IE */
5681 insn1 &= (1 << 26) - 1;
5682 insn1 |= 32 << 26; /* lwz */
5683 insn2 = 0x7c631214; /* add 3,3,2 */
5684 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5685 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5686 + R_PPC_GOT_TPREL16);
5687 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5688 }
5689 else
5690 {
5691 /* LE */
5692 insn1 = 0x3c620000; /* addis 3,2,0 */
5693 insn2 = 0x38630000; /* addi 3,3,0 */
5694 if (tls_gd == 0)
5695 {
5696 /* Was an LD reloc. */
5697 r_symndx = 0;
e1918d23
AM
5698 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5699 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
5700 }
5701 r_type = R_PPC_TPREL16_HA;
5702 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5703 rel[1].r_info = ELF32_R_INFO (r_symndx,
5704 R_PPC_TPREL16_LO);
5705 rel[1].r_offset += 2;
5706 }
7619e7c7
AM
5707 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
5708 bfd_put_32 (output_bfd, insn2, contents + offset);
7619e7c7
AM
5709 if (tls_gd == 0)
5710 {
5711 /* We changed the symbol on an LD reloc. Start over
70bccea4 5712 in order to get h, sym, sec etc. right. */
7619e7c7
AM
5713 rel--;
5714 continue;
5715 }
5716 }
252b5132 5717 }
7619e7c7
AM
5718 break;
5719 }
5720
5721 /* Handle other relocations that tweak non-addend part of insn. */
5722 branch_bit = 0;
5723 switch (r_type)
5724 {
5725 default:
5726 break;
5727
5728 /* Branch taken prediction relocations. */
5729 case R_PPC_ADDR14_BRTAKEN:
5730 case R_PPC_REL14_BRTAKEN:
5731 branch_bit = BRANCH_PREDICT_BIT;
5732 /* Fall thru */
5733
4cc11e76 5734 /* Branch not taken prediction relocations. */
7619e7c7
AM
5735 case R_PPC_ADDR14_BRNTAKEN:
5736 case R_PPC_REL14_BRNTAKEN:
5737 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5738 insn &= ~BRANCH_PREDICT_BIT;
5739 insn |= branch_bit;
5740
5741 from = (rel->r_offset
5742 + input_section->output_offset
5743 + input_section->output_section->vma);
5744
5745 /* Invert 'y' bit if not the default. */
5746 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5747 insn ^= BRANCH_PREDICT_BIT;
5748
5749 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5750 break;
252b5132
RH
5751 }
5752
7619e7c7
AM
5753 addend = rel->r_addend;
5754 tls_type = 0;
5755 howto = NULL;
55fd94b0
AM
5756 if (r_type < R_PPC_max)
5757 howto = ppc_elf_howto_table[r_type];
7619e7c7 5758 switch (r_type)
252b5132
RH
5759 {
5760 default:
7619e7c7 5761 (*_bfd_error_handler)
d003868e
AM
5762 (_("%B: unknown relocation type %d for symbol %s"),
5763 input_bfd, (int) r_type, sym_name);
252b5132
RH
5764
5765 bfd_set_error (bfd_error_bad_value);
b34976b6 5766 ret = FALSE;
252b5132
RH
5767 continue;
5768
7619e7c7
AM
5769 case R_PPC_NONE:
5770 case R_PPC_TLS:
5771 case R_PPC_EMB_MRKREF:
5772 case R_PPC_GNU_VTINHERIT:
5773 case R_PPC_GNU_VTENTRY:
7595d193
L
5774 continue;
5775
7619e7c7
AM
5776 /* GOT16 relocations. Like an ADDR16 using the symbol's
5777 address in the GOT as relocation value instead of the
5778 symbol's value itself. Also, create a GOT entry for the
5779 symbol and put the symbol value there. */
5780 case R_PPC_GOT_TLSGD16:
5781 case R_PPC_GOT_TLSGD16_LO:
5782 case R_PPC_GOT_TLSGD16_HI:
5783 case R_PPC_GOT_TLSGD16_HA:
5784 tls_type = TLS_TLS | TLS_GD;
5785 goto dogot;
5786
5787 case R_PPC_GOT_TLSLD16:
5788 case R_PPC_GOT_TLSLD16_LO:
5789 case R_PPC_GOT_TLSLD16_HI:
5790 case R_PPC_GOT_TLSLD16_HA:
5791 tls_type = TLS_TLS | TLS_LD;
5792 goto dogot;
5793
5794 case R_PPC_GOT_TPREL16:
5795 case R_PPC_GOT_TPREL16_LO:
5796 case R_PPC_GOT_TPREL16_HI:
5797 case R_PPC_GOT_TPREL16_HA:
5798 tls_type = TLS_TLS | TLS_TPREL;
5799 goto dogot;
5800
5801 case R_PPC_GOT_DTPREL16:
5802 case R_PPC_GOT_DTPREL16_LO:
5803 case R_PPC_GOT_DTPREL16_HI:
5804 case R_PPC_GOT_DTPREL16_HA:
5805 tls_type = TLS_TLS | TLS_DTPREL;
5806 goto dogot;
5807
5808 case R_PPC_GOT16:
5809 case R_PPC_GOT16_LO:
5810 case R_PPC_GOT16_HI:
5811 case R_PPC_GOT16_HA:
5812 dogot:
5813 {
5814 /* Relocation is to the entry for this symbol in the global
5815 offset table. */
5816 bfd_vma off;
5817 bfd_vma *offp;
5818 unsigned long indx;
5819
5820 if (htab->got == NULL)
5821 abort ();
5822
5823 indx = 0;
5824 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 5825 && (h == NULL
f5385ebf 5826 || !h->def_dynamic))
7619e7c7
AM
5827 offp = &htab->tlsld_got.offset;
5828 else if (h != NULL)
5829 {
5830 bfd_boolean dyn;
5831 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 5832 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM
5833 || (info->shared
5834 && SYMBOL_REFERENCES_LOCAL (info, h)))
5835 /* This is actually a static link, or it is a
5836 -Bsymbolic link and the symbol is defined
5837 locally, or the symbol was forced to be local
5838 because of a version file. */
5839 ;
5840 else
5841 {
5842 indx = h->dynindx;
5843 unresolved_reloc = FALSE;
5844 }
5845 offp = &h->got.offset;
5846 }
5847 else
5848 {
5849 if (local_got_offsets == NULL)
5850 abort ();
5851 offp = &local_got_offsets[r_symndx];
5852 }
5853
5854 /* The offset must always be a multiple of 4. We use the
5855 least significant bit to record whether we have already
5856 processed this entry. */
5857 off = *offp;
5858 if ((off & 1) != 0)
5859 off &= ~1;
5860 else
5861 {
70bccea4
AM
5862 unsigned int tls_m = (tls_mask
5863 & (TLS_LD | TLS_GD | TLS_DTPREL
5864 | TLS_TPREL | TLS_TPRELGD));
5865
5866 if (offp == &htab->tlsld_got.offset)
5867 tls_m = TLS_LD;
5868 else if (h == NULL
f5385ebf 5869 || !h->def_dynamic)
70bccea4
AM
5870 tls_m &= ~TLS_LD;
5871
5872 /* We might have multiple got entries for this sym.
5873 Initialize them all. */
5874 do
7619e7c7 5875 {
70bccea4
AM
5876 int tls_ty = 0;
5877
5878 if ((tls_m & TLS_LD) != 0)
7619e7c7 5879 {
70bccea4
AM
5880 tls_ty = TLS_TLS | TLS_LD;
5881 tls_m &= ~TLS_LD;
5882 }
5883 else if ((tls_m & TLS_GD) != 0)
5884 {
5885 tls_ty = TLS_TLS | TLS_GD;
5886 tls_m &= ~TLS_GD;
5887 }
5888 else if ((tls_m & TLS_DTPREL) != 0)
5889 {
5890 tls_ty = TLS_TLS | TLS_DTPREL;
5891 tls_m &= ~TLS_DTPREL;
5892 }
5893 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5894 {
5895 tls_ty = TLS_TLS | TLS_TPREL;
5896 tls_m = 0;
7619e7c7 5897 }
7619e7c7 5898
70bccea4 5899 /* Generate relocs for the dynamic linker. */
4e795f50
AM
5900 if ((info->shared || indx != 0)
5901 && (h == NULL
5902 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5903 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 5904 {
70bccea4
AM
5905 outrel.r_offset = (htab->got->output_section->vma
5906 + htab->got->output_offset
5907 + off);
e515b051 5908 outrel.r_addend = 0;
70bccea4
AM
5909 if (tls_ty & (TLS_LD | TLS_GD))
5910 {
5911 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
5912 if (tls_ty == (TLS_TLS | TLS_GD))
5913 {
5914 loc = htab->relgot->contents;
5915 loc += (htab->relgot->reloc_count++
5916 * sizeof (Elf32_External_Rela));
5917 bfd_elf32_swap_reloca_out (output_bfd,
5918 &outrel, loc);
e515b051 5919 outrel.r_offset += 4;
70bccea4
AM
5920 outrel.r_info
5921 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
5922 }
5923 }
5924 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5925 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5926 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5927 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5928 else if (indx == 0)
5929 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5930 else
5931 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
70bccea4 5932 if (indx == 0)
e515b051
AM
5933 {
5934 outrel.r_addend += relocation;
5935 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 5936 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 5937 }
70bccea4
AM
5938 loc = htab->relgot->contents;
5939 loc += (htab->relgot->reloc_count++
5940 * sizeof (Elf32_External_Rela));
5941 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
5942 }
5943
70bccea4
AM
5944 /* Init the .got section contents if we're not
5945 emitting a reloc. */
5946 else
7619e7c7 5947 {
70bccea4
AM
5948 bfd_vma value = relocation;
5949
7b609f53
AM
5950 if (tls_ty == (TLS_TLS | TLS_LD))
5951 value = 1;
5952 else if (tls_ty != 0)
70bccea4 5953 {
e1918d23 5954 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 5955 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 5956 value += DTP_OFFSET - TP_OFFSET;
70bccea4 5957
7b609f53
AM
5958 if (tls_ty == (TLS_TLS | TLS_GD))
5959 {
5960 bfd_put_32 (output_bfd, value,
5961 htab->got->contents + off + 4);
5962 value = 1;
5963 }
70bccea4 5964 }
70bccea4
AM
5965 bfd_put_32 (output_bfd, value,
5966 htab->got->contents + off);
7619e7c7 5967 }
70bccea4
AM
5968
5969 off += 4;
5970 if (tls_ty & (TLS_LD | TLS_GD))
5971 off += 4;
7619e7c7 5972 }
70bccea4
AM
5973 while (tls_m != 0);
5974
5975 off = *offp;
5976 *offp = off | 1;
7619e7c7
AM
5977 }
5978
5979 if (off >= (bfd_vma) -2)
5980 abort ();
5981
70bccea4
AM
5982 if ((tls_type & TLS_TLS) != 0)
5983 {
5984 if (tls_type != (TLS_TLS | TLS_LD))
5985 {
5986 if ((tls_mask & TLS_LD) != 0
5987 && !(h == NULL
f5385ebf 5988 || !h->def_dynamic))
70bccea4
AM
5989 off += 8;
5990 if (tls_type != (TLS_TLS | TLS_GD))
5991 {
5992 if ((tls_mask & TLS_GD) != 0)
5993 off += 8;
5994 if (tls_type != (TLS_TLS | TLS_DTPREL))
5995 {
5996 if ((tls_mask & TLS_DTPREL) != 0)
5997 off += 4;
5998 }
5999 }
6000 }
6001 }
6002
3b36f7e6
AM
6003 relocation = htab->got->output_offset + off;
6004 relocation -= htab->elf.hgot->root.u.def.value;
7619e7c7
AM
6005
6006 /* Addends on got relocations don't make much sense.
6007 x+off@got is actually x@got+off, and since the got is
6008 generated by a hash table traversal, the value in the
6009 got at entry m+n bears little relation to the entry m. */
6010 if (addend != 0)
6011 (*_bfd_error_handler)
d003868e
AM
6012 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6013 input_bfd,
6014 input_section,
7619e7c7 6015 (long) rel->r_offset,
7b609f53 6016 howto->name,
7619e7c7
AM
6017 sym_name);
6018 }
70bccea4 6019 break;
7619e7c7 6020
252b5132 6021 /* Relocations that need no special processing. */
7619e7c7 6022 case R_PPC_LOCAL24PC:
252b5132
RH
6023 /* It makes no sense to point a local relocation
6024 at a symbol not in this object. */
7b609f53 6025 if (unresolved_reloc)
252b5132 6026 {
464e1740
ILT
6027 if (! (*info->callbacks->undefined_symbol) (info,
6028 h->root.root.string,
6029 input_bfd,
6030 input_section,
5cc7c785 6031 rel->r_offset,
b34976b6
AM
6032 TRUE))
6033 return FALSE;
252b5132
RH
6034 continue;
6035 }
6036 break;
6037
7619e7c7
AM
6038 case R_PPC_DTPREL16:
6039 case R_PPC_DTPREL16_LO:
6040 case R_PPC_DTPREL16_HI:
6041 case R_PPC_DTPREL16_HA:
e1918d23 6042 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
6043 break;
6044
70bccea4
AM
6045 /* Relocations that may need to be propagated if this is a shared
6046 object. */
7619e7c7
AM
6047 case R_PPC_TPREL16:
6048 case R_PPC_TPREL16_LO:
6049 case R_PPC_TPREL16_HI:
6050 case R_PPC_TPREL16_HA:
e1918d23 6051 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
6052 /* The TPREL16 relocs shouldn't really be used in shared
6053 libs as they will result in DT_TEXTREL being set, but
6054 support them anyway. */
6055 goto dodyn;
6056
6057 case R_PPC_TPREL32:
e1918d23 6058 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
6059 goto dodyn;
6060
6061 case R_PPC_DTPREL32:
e1918d23 6062 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
6063 goto dodyn;
6064
e515b051
AM
6065 case R_PPC_DTPMOD32:
6066 relocation = 1;
6067 addend = 0;
6068 goto dodyn;
6069
d7128ce4
AM
6070 case R_PPC_REL16:
6071 case R_PPC_REL16_LO:
6072 case R_PPC_REL16_HI:
6073 case R_PPC_REL16_HA:
6074 break;
6075
7619e7c7
AM
6076 case R_PPC_REL24:
6077 case R_PPC_REL32:
6078 case R_PPC_REL14:
6079 case R_PPC_REL14_BRTAKEN:
6080 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
6081 /* If these relocations are not to a named symbol, they can be
6082 handled right here, no need to bother the dynamic linker. */
f6c52c13 6083 if (SYMBOL_REFERENCES_LOCAL (info, h)
3b36f7e6 6084 || h == htab->elf.hgot)
252b5132 6085 break;
70bccea4 6086 /* fall through */
252b5132 6087
70bccea4
AM
6088 /* Relocations that always need to be propagated if this is a shared
6089 object. */
7619e7c7
AM
6090 case R_PPC_ADDR32:
6091 case R_PPC_ADDR24:
6092 case R_PPC_ADDR16:
6093 case R_PPC_ADDR16_LO:
6094 case R_PPC_ADDR16_HI:
6095 case R_PPC_ADDR16_HA:
6096 case R_PPC_ADDR14:
6097 case R_PPC_ADDR14_BRTAKEN:
6098 case R_PPC_ADDR14_BRNTAKEN:
6099 case R_PPC_UADDR32:
6100 case R_PPC_UADDR16:
ee05f2fe
AM
6101 /* r_symndx will be zero only for relocs against symbols
6102 from removed linkonce sections, or sections discarded by
6103 a linker script. */
7619e7c7 6104 dodyn:
ee05f2fe
AM
6105 if (r_symndx == 0)
6106 break;
6107 /* Fall thru. */
6108
c87b5a93
AM
6109 if ((input_section->flags & SEC_ALLOC) == 0)
6110 break;
6111 /* Fall thru. */
6112
ee05f2fe 6113 if ((info->shared
4e795f50
AM
6114 && (h == NULL
6115 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6116 || h->root.type != bfd_link_hash_undefweak)
ee05f2fe 6117 && (MUST_BE_DYN_RELOC (r_type)
f6c52c13 6118 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM
6119 || (ELIMINATE_COPY_RELOCS
6120 && !info->shared
ee05f2fe
AM
6121 && h != NULL
6122 && h->dynindx != -1
f5385ebf
AM
6123 && !h->non_got_ref
6124 && h->def_dynamic
6125 && !h->def_regular))
252b5132 6126 {
0bb2d96a 6127 int skip;
252b5132
RH
6128
6129#ifdef DEBUG
55fd94b0
AM
6130 fprintf (stderr, "ppc_elf_relocate_section needs to "
6131 "create relocation for %s\n",
70bccea4
AM
6132 (h && h->root.root.string
6133 ? h->root.root.string : "<unknown>"));
252b5132
RH
6134#endif
6135
6136 /* When generating a shared object, these relocations
70bccea4
AM
6137 are copied into the output file to be resolved at run
6138 time. */
252b5132
RH
6139 if (sreloc == NULL)
6140 {
6141 const char *name;
6142
6143 name = (bfd_elf_string_from_elf_section
6144 (input_bfd,
6145 elf_elfheader (input_bfd)->e_shstrndx,
6146 elf_section_data (input_section)->rel_hdr.sh_name));
6147 if (name == NULL)
b34976b6 6148 return FALSE;
252b5132
RH
6149
6150 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
6151 && strcmp (bfd_get_section_name (input_bfd,
6152 input_section),
6153 name + 5) == 0);
6154
7619e7c7 6155 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
252b5132
RH
6156 BFD_ASSERT (sreloc != NULL);
6157 }
6158
0bb2d96a 6159 skip = 0;
252b5132 6160
c629eae0
JJ
6161 outrel.r_offset =
6162 _bfd_elf_section_offset (output_bfd, info, input_section,
6163 rel->r_offset);
0bb2d96a
JJ
6164 if (outrel.r_offset == (bfd_vma) -1
6165 || outrel.r_offset == (bfd_vma) -2)
6166 skip = (int) outrel.r_offset;
252b5132
RH
6167 outrel.r_offset += (input_section->output_section->vma
6168 + input_section->output_offset);
6169
6170 if (skip)
6171 memset (&outrel, 0, sizeof outrel);
f6c52c13 6172 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 6173 {
7619e7c7 6174 unresolved_reloc = FALSE;
252b5132
RH
6175 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6176 outrel.r_addend = rel->r_addend;
6177 }
6178 else
6179 {
47388f4c
AM
6180 outrel.r_addend = relocation + rel->r_addend;
6181
252b5132 6182 if (r_type == R_PPC_ADDR32)
47388f4c 6183 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
6184 else
6185 {
6186 long indx;
6187
47388f4c 6188 if (bfd_is_abs_section (sec))
252b5132
RH
6189 indx = 0;
6190 else if (sec == NULL || sec->owner == NULL)
6191 {
6192 bfd_set_error (bfd_error_bad_value);
b34976b6 6193 return FALSE;
252b5132
RH
6194 }
6195 else
6196 {
6197 asection *osec;
6198
47388f4c
AM
6199 /* We are turning this relocation into one
6200 against a section symbol. It would be
6201 proper to subtract the symbol's value,
6202 osec->vma, from the emitted reloc addend,
6203 but ld.so expects buggy relocs. */
252b5132
RH
6204 osec = sec->output_section;
6205 indx = elf_section_data (osec)->dynindx;
8da6118f 6206 BFD_ASSERT (indx > 0);
252b5132
RH
6207#ifdef DEBUG
6208 if (indx <= 0)
55fd94b0
AM
6209 printf ("indx=%d section=%s flags=%08x name=%s\n",
6210 indx, osec->name, osec->flags,
6211 h->root.root.string);
252b5132
RH
6212#endif
6213 }
6214
6215 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH
6216 }
6217 }
6218
947216bf
AM
6219 loc = sreloc->contents;
6220 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6221 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 6222
2243deae 6223 if (skip == -1)
252b5132 6224 continue;
2243deae
L
6225
6226 /* This reloc will be computed at runtime. We clear the memory
6227 so that it contains predictable value. */
6228 if (! skip
6229 && ((input_section->flags & SEC_ALLOC) != 0
6230 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6231 {
6232 relocation = howto->pc_relative ? outrel.r_offset : 0;
6233 addend = 0;
6234 break;
6235 }
252b5132 6236 }
252b5132
RH
6237 break;
6238
b4a38de6
AM
6239 case R_PPC_RELAX32PC_PLT:
6240 case R_PPC_RELAX32_PLT:
a6aa5195
AM
6241 {
6242 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6243
6244 if (!htab->old_plt)
6245 relocation = (htab->glink->output_section->vma
6246 + htab->glink->output_offset
6247 + ent->glink_offset);
6248 else
6249 relocation = (htab->plt->output_section->vma
6250 + htab->plt->output_offset
6251 + ent->plt.offset);
6252 addend = 0;
6253 }
b4a38de6
AM
6254 if (r_type == R_PPC_RELAX32_PLT)
6255 goto relax32;
6256 /* Fall thru */
6257
f31a141e
AM
6258 case R_PPC_RELAX32PC:
6259 relocation -= (input_section->output_section->vma
6260 + input_section->output_offset
6261 + rel->r_offset - 4);
6262 /* Fall thru */
b4a38de6 6263
deaaf2f3 6264 case R_PPC_RELAX32:
b4a38de6 6265 relax32:
9abc968f
AM
6266 {
6267 unsigned long t0;
6268 unsigned long t1;
6269
6270 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6271 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6272
6273 /* We're clearing the bits for R_PPC_ADDR16_HA
6274 and R_PPC_ADDR16_LO here. */
6275 t0 &= ~0xffff;
6276 t1 &= ~0xffff;
6277
6278 /* t0 is HA, t1 is LO */
6279 relocation += addend;
6280 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6281 t1 |= relocation & 0xffff;
6282
6283 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6284 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6285 }
8517fae7 6286 continue;
deaaf2f3 6287
70bccea4 6288 /* Indirect .sdata relocation. */
7619e7c7 6289 case R_PPC_EMB_SDAI16:
c9a2f333 6290 BFD_ASSERT (htab->sdata[0].section != NULL);
7619e7c7 6291 relocation
76750a2f
AM
6292 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6293 h, relocation, rel);
252b5132
RH
6294 break;
6295
70bccea4 6296 /* Indirect .sdata2 relocation. */
7619e7c7 6297 case R_PPC_EMB_SDA2I16:
c9a2f333 6298 BFD_ASSERT (htab->sdata[1].section != NULL);
7619e7c7 6299 relocation
76750a2f
AM
6300 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6301 h, relocation, rel);
252b5132
RH
6302 break;
6303
70bccea4
AM
6304 /* Handle the TOC16 reloc. We want to use the offset within the .got
6305 section, not the actual VMA. This is appropriate when generating
6306 an embedded ELF object, for which the .got section acts like the
6307 AIX .toc section. */
7619e7c7 6308 case R_PPC_TOC16: /* phony GOT16 relocations */
55fd94b0 6309 BFD_ASSERT (sec != NULL);
252b5132
RH
6310 BFD_ASSERT (bfd_is_und_section (sec)
6311 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
f12123c0 6312 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
252b5132 6313
70bccea4 6314 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
6315 break;
6316
7619e7c7 6317 case R_PPC_PLTREL24:
252b5132 6318 /* Relocation is to the entry for this symbol in the
70bccea4 6319 procedure linkage table. */
a6aa5195
AM
6320 {
6321 struct plt_entry *ent = find_plt_ent (h, got2, addend);
252b5132 6322
a6aa5195
AM
6323 addend = 0;
6324 if (ent == NULL
6325 || htab->plt == NULL)
6326 {
6327 /* We didn't make a PLT entry for this symbol. This
6328 happens when statically linking PIC code, or when
6329 using -Bsymbolic. */
6330 break;
6331 }
252b5132 6332
a6aa5195
AM
6333 unresolved_reloc = FALSE;
6334 if (!htab->old_plt)
6335 relocation = (htab->glink->output_section->vma
6336 + htab->glink->output_offset
6337 + ent->glink_offset);
6338 else
6339 relocation = (htab->plt->output_section->vma
6340 + htab->plt->output_offset
6341 + ent->plt.offset);
6342 }
8da6118f 6343 break;
252b5132 6344
70bccea4 6345 /* Relocate against _SDA_BASE_. */
7619e7c7 6346 case R_PPC_SDAREL16:
252b5132
RH
6347 {
6348 const char *name;
6349
55fd94b0 6350 BFD_ASSERT (sec != NULL);
252b5132 6351 name = bfd_get_section_name (abfd, sec->output_section);
5f819128
AM
6352 if (! ((strncmp (name, ".sdata", 6) == 0
6353 && (name[6] == 0 || name[6] == '.'))
6354 || (strncmp (name, ".sbss", 5) == 0
6355 && (name[5] == 0 || name[5] == '.'))))
252b5132 6356 {
55fd94b0 6357 (*_bfd_error_handler)
d003868e 6358 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 6359 "in the wrong output section (%s)"),
d003868e 6360 input_bfd,
55fd94b0
AM
6361 sym_name,
6362 howto->name,
6363 name);
252b5132 6364 }
c9a2f333 6365 addend -= htab->sdata[0].sym_val;
252b5132
RH
6366 }
6367 break;
6368
70bccea4 6369 /* Relocate against _SDA2_BASE_. */
7619e7c7 6370 case R_PPC_EMB_SDA2REL:
252b5132
RH
6371 {
6372 const char *name;
6373
55fd94b0 6374 BFD_ASSERT (sec != NULL);
252b5132 6375 name = bfd_get_section_name (abfd, sec->output_section);
5f819128
AM
6376 if (! (strncmp (name, ".sdata2", 7) == 0
6377 || strncmp (name, ".sbss2", 6) == 0))
252b5132 6378 {
55fd94b0 6379 (*_bfd_error_handler)
d003868e 6380 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 6381 "in the wrong output section (%s)"),
d003868e 6382 input_bfd,
55fd94b0
AM
6383 sym_name,
6384 howto->name,
6385 name);
c3668558 6386
252b5132 6387 bfd_set_error (bfd_error_bad_value);
b34976b6 6388 ret = FALSE;
252b5132
RH
6389 continue;
6390 }
c9a2f333 6391 addend -= htab->sdata[1].sym_val;
252b5132
RH
6392 }
6393 break;
6394
70bccea4 6395 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7
AM
6396 case R_PPC_EMB_SDA21:
6397 case R_PPC_EMB_RELSDA:
252b5132
RH
6398 {
6399 const char *name;
6400 int reg;
6401
55fd94b0 6402 BFD_ASSERT (sec != NULL);
252b5132 6403 name = bfd_get_section_name (abfd, sec->output_section);
b34976b6 6404 if (((strncmp (name, ".sdata", 6) == 0
5f819128
AM
6405 && (name[6] == 0 || name[6] == '.'))
6406 || (strncmp (name, ".sbss", 5) == 0
6407 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH
6408 {
6409 reg = 13;
c9a2f333 6410 addend -= htab->sdata[0].sym_val;
252b5132
RH
6411 }
6412
5f819128
AM
6413 else if (strncmp (name, ".sdata2", 7) == 0
6414 || strncmp (name, ".sbss2", 6) == 0)
252b5132
RH
6415 {
6416 reg = 2;
c9a2f333 6417 addend -= htab->sdata[1].sym_val;
252b5132
RH
6418 }
6419
8da6118f
KH
6420 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6421 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
6422 {
6423 reg = 0;
6424 }
6425
6426 else
6427 {
55fd94b0 6428 (*_bfd_error_handler)
d003868e 6429 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 6430 "in the wrong output section (%s)"),
d003868e 6431 input_bfd,
55fd94b0
AM
6432 sym_name,
6433 howto->name,
6434 name);
252b5132
RH
6435
6436 bfd_set_error (bfd_error_bad_value);
b34976b6 6437 ret = FALSE;
252b5132
RH
6438 continue;
6439 }
6440
6441 if (r_type == R_PPC_EMB_SDA21)
6442 { /* fill in register field */
7619e7c7 6443 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 6444 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 6445 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
6446 }
6447 }
6448 break;
6449
70bccea4 6450 /* Relocate against the beginning of the section. */
7619e7c7
AM
6451 case R_PPC_SECTOFF:
6452 case R_PPC_SECTOFF_LO:
6453 case R_PPC_SECTOFF_HI:
6454 case R_PPC_SECTOFF_HA:
55fd94b0 6455 BFD_ASSERT (sec != NULL);
252b5132 6456 addend -= sec->output_section->vma;
252b5132
RH
6457 break;
6458
70bccea4 6459 /* Negative relocations. */
7619e7c7
AM
6460 case R_PPC_EMB_NADDR32:
6461 case R_PPC_EMB_NADDR16:
6462 case R_PPC_EMB_NADDR16_LO:
6463 case R_PPC_EMB_NADDR16_HI:
6464 case R_PPC_EMB_NADDR16_HA:
8da6118f 6465 addend -= 2 * relocation;
252b5132
RH
6466 break;
6467
7619e7c7
AM
6468 case R_PPC_COPY:
6469 case R_PPC_GLOB_DAT:
6470 case R_PPC_JMP_SLOT:
6471 case R_PPC_RELATIVE:
6472 case R_PPC_PLT32:
6473 case R_PPC_PLTREL32:
6474 case R_PPC_PLT16_LO:
6475 case R_PPC_PLT16_HI:
6476 case R_PPC_PLT16_HA:
6477 case R_PPC_ADDR30:
6478 case R_PPC_EMB_RELSEC16:
6479 case R_PPC_EMB_RELST_LO:
6480 case R_PPC_EMB_RELST_HI:
6481 case R_PPC_EMB_RELST_HA:
6482 case R_PPC_EMB_BIT_FLD:
6483 (*_bfd_error_handler)
d003868e
AM
6484 (_("%B: relocation %s is not yet supported for symbol %s."),
6485 input_bfd,
7619e7c7
AM
6486 howto->name,
6487 sym_name);
252b5132
RH
6488
6489 bfd_set_error (bfd_error_invalid_operation);
b34976b6 6490 ret = FALSE;
252b5132 6491 continue;
7619e7c7 6492 }
252b5132 6493
7619e7c7
AM
6494 /* Do any further special processing. */
6495 switch (r_type)
6496 {
6497 default:
6498 break;
6499
6500 case R_PPC_ADDR16_HA:
d7128ce4 6501 case R_PPC_REL16_HA:
7619e7c7
AM
6502 case R_PPC_GOT16_HA:
6503 case R_PPC_PLT16_HA:
6504 case R_PPC_SECTOFF_HA:
6505 case R_PPC_TPREL16_HA:
6506 case R_PPC_DTPREL16_HA:
6507 case R_PPC_GOT_TLSGD16_HA:
6508 case R_PPC_GOT_TLSLD16_HA:
6509 case R_PPC_GOT_TPREL16_HA:
6510 case R_PPC_GOT_DTPREL16_HA:
6511 case R_PPC_EMB_NADDR16_HA:
6512 case R_PPC_EMB_RELST_HA:
6513 /* It's just possible that this symbol is a weak symbol
7b609f53 6514 that's not actually defined anywhere. In that case,
7619e7c7
AM
6515 'sec' would be NULL, and we should leave the symbol
6516 alone (it will be set to zero elsewhere in the link). */
6517 if (sec != NULL)
e515b051
AM
6518 /* Add 0x10000 if sign bit in 0:15 is set.
6519 Bits 0:15 are not used. */
6520 addend += 0x8000;
7619e7c7 6521 break;
252b5132
RH
6522 }
6523
252b5132 6524#ifdef DEBUG
55fd94b0
AM
6525 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6526 "offset = %ld, addend = %ld\n",
252b5132 6527 howto->name,
8da6118f 6528 (int) r_type,
252b5132
RH
6529 sym_name,
6530 r_symndx,
7619e7c7 6531 (long) rel->r_offset,
8da6118f 6532 (long) addend);
252b5132
RH
6533#endif
6534
7619e7c7
AM
6535 if (unresolved_reloc
6536 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 6537 && h->def_dynamic))
7619e7c7
AM
6538 {
6539 (*_bfd_error_handler)
d003868e
AM
6540 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6541 input_bfd,
6542 input_section,
7619e7c7 6543 (long) rel->r_offset,
7b609f53 6544 howto->name,
7619e7c7
AM
6545 sym_name);
6546 ret = FALSE;
6547 }
6548
252b5132
RH
6549 r = _bfd_final_link_relocate (howto,
6550 input_bfd,
6551 input_section,
6552 contents,
7619e7c7 6553 rel->r_offset,
252b5132
RH
6554 relocation,
6555 addend);
6556
7619e7c7 6557 if (r != bfd_reloc_ok)
252b5132 6558 {
7619e7c7 6559 if (r == bfd_reloc_overflow)
252b5132 6560 {
7619e7c7
AM
6561 if (warned)
6562 continue;
6563 if (h != NULL
6564 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH
6565 && howto->pc_relative)
6566 {
6567 /* Assume this is a call protected by other code that
6568 detect the symbol is undefined. If this is the case,
6569 we can safely ignore the overflow. If not, the
6570 program is hosed anyway, and a little warning isn't
6571 going to help. */
252b5132 6572
dc1bc0c9
RH
6573 continue;
6574 }
252b5132 6575
7619e7c7 6576 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 6577 (h ? &h->root : NULL),
7619e7c7
AM
6578 sym_name,
6579 howto->name,
6580 rel->r_addend,
6581 input_bfd,
6582 input_section,
6583 rel->r_offset))
6584 return FALSE;
dc1bc0c9
RH
6585 }
6586 else
6587 {
7619e7c7 6588 (*_bfd_error_handler)
d003868e
AM
6589 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6590 input_bfd, input_section,
7b609f53 6591 (long) rel->r_offset, howto->name, sym_name, (int) r);
7619e7c7 6592 ret = FALSE;
252b5132
RH
6593 }
6594 }
6595 }
6596
252b5132
RH
6597#ifdef DEBUG
6598 fprintf (stderr, "\n");
6599#endif
6600
6601 return ret;
6602}
252b5132 6603\f
a6aa5195
AM
6604#define PPC_LO(v) ((v) & 0xffff)
6605#define PPC_HI(v) (((v) >> 16) & 0xffff)
6606#define PPC_HA(v) PPC_HI ((v) + 0x8000)
6607
25dbc73a
AM
6608/* Finish up dynamic symbol handling. We set the contents of various
6609 dynamic sections here. */
c5fccbec 6610
b34976b6 6611static bfd_boolean
25dbc73a
AM
6612ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6613 struct bfd_link_info *info,
6614 struct elf_link_hash_entry *h,
6615 Elf_Internal_Sym *sym)
e1a9cb8e 6616{
25dbc73a 6617 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
6618 struct plt_entry *ent;
6619 bfd_boolean doneone;
e1a9cb8e 6620
25dbc73a
AM
6621#ifdef DEBUG
6622 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6623 h->root.root.string);
6624#endif
e1a9cb8e 6625
25dbc73a
AM
6626 htab = ppc_elf_hash_table (info);
6627 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 6628
a6aa5195
AM
6629 doneone = FALSE;
6630 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6631 if (ent->plt.offset != (bfd_vma) -1)
6632 {
6633 if (!doneone)
6634 {
6635 Elf_Internal_Rela rela;
6636 bfd_byte *loc;
6637 bfd_vma reloc_index;
e1a9cb8e 6638
9d8504b1
PB
6639 if (!(htab->old_plt || htab->is_vxworks))
6640 reloc_index = ent->plt.offset / 4;
6641 else
6642 {
6643 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
6644 / htab->plt_slot_size);
6645 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
6646 && !htab->is_vxworks)
6647 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6648 }
6649
a6aa5195
AM
6650 /* This symbol has an entry in the procedure linkage table.
6651 Set it up. */
9d8504b1 6652 if (htab->is_vxworks)
a6aa5195 6653 {
9d8504b1
PB
6654 bfd_vma got_offset;
6655 const bfd_vma *plt_entry;
6656
6657 /* The first three entries in .got.plt are reserved. */
6658 got_offset = (reloc_index + 3) * 4;
6659
6660 /* Use the right PLT. */
6661 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
6662 : ppc_elf_vxworks_plt_entry;
6663
6664 /* Fill in the .plt on VxWorks. */
6665 if (info->shared)
6666 {
6667 bfd_vma got_offset_hi = (got_offset >> 16)
6668 + ((got_offset & 0x8000) >> 15);
6669
6670 bfd_put_32 (output_bfd,
6671 plt_entry[0] | (got_offset_hi & 0xffff),
6672 htab->plt->contents + ent->plt.offset + 0);
6673 bfd_put_32 (output_bfd,
6674 plt_entry[1] | (got_offset & 0xffff),
6675 htab->plt->contents + ent->plt.offset + 4);
6676 }
6677 else
6678 {
6679 bfd_vma got_loc = (got_offset
6680 + htab->hgot->root.u.def.value
6681 + htab->hgot->root.u.def.section->output_offset
6682 + htab->hgot->root.u.def.section->output_section->vma);
6683 bfd_vma got_loc_hi = (got_loc >> 16)
6684 + ((got_loc & 0x8000) >> 15);
6685
6686 bfd_put_32 (output_bfd,
6687 plt_entry[0] | (got_loc_hi & 0xffff),
6688 htab->plt->contents + ent->plt.offset + 0);
6689 bfd_put_32 (output_bfd,
6690 plt_entry[1] | (got_loc & 0xffff),
6691 htab->plt->contents + ent->plt.offset + 4);
6692 }
6693
6694 bfd_put_32 (output_bfd, plt_entry[2],
6695 htab->plt->contents + ent->plt.offset + 8);
6696 bfd_put_32 (output_bfd, plt_entry[3],
6697 htab->plt->contents + ent->plt.offset + 12);
6698
6699 /* This instruction is an immediate load. The value loaded is
6700 the byte offset of the R_PPC_JMP_SLOT relocation from the
6701 start of the .rela.plt section. The value is stored in the
6702 low-order 16 bits of the load instruction. */
6703 /* NOTE: It appears that this is now an index rather than a
6704 prescaled offset. */
6705 bfd_put_32 (output_bfd,
6706 plt_entry[4] | reloc_index,
6707 htab->plt->contents + ent->plt.offset + 16);
6708 /* This instruction is a PC-relative branch whose target is
6709 the start of the PLT section. The address of this branch
6710 instruction is 20 bytes beyond the start of this PLT entry.
6711 The address is encoded in bits 6-29, inclusive. The value
6712 stored is right-shifted by two bits, permitting a 26-bit
6713 offset. */
6714 bfd_put_32 (output_bfd,
6715 (plt_entry[5]
6716 | (-(ent->plt.offset + 20) & 0x03fffffc)),
6717 htab->plt->contents + ent->plt.offset + 20);
6718 bfd_put_32 (output_bfd, plt_entry[6],
6719 htab->plt->contents + ent->plt.offset + 24);
6720 bfd_put_32 (output_bfd, plt_entry[7],
6721 htab->plt->contents + ent->plt.offset + 28);
6722
6723 /* Fill in the GOT entry corresponding to this PLT slot with
6724 the address immediately after the the "bctr" instruction
6725 in this PLT entry. */
6726 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
6727 + htab->plt->output_offset
6728 + ent->plt.offset + 16),
6729 htab->sgotplt->contents + got_offset);
6730
6731 if (!info->shared)
6732 {
6733 /* Fill in a couple of entries in .rela.plt.unloaded. */
6734 loc = htab->srelplt2->contents
6735 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
6736 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
6737 * sizeof (Elf32_External_Rela));
6738
6739 /* Provide the @ha relocation for the first instruction. */
6740 rela.r_offset = (htab->plt->output_section->vma
6741 + htab->plt->output_offset
6742 + ent->plt.offset + 2);
6743 rela.r_info = ELF32_R_INFO (htab->hgot->indx,
6744 R_PPC_ADDR16_HA);
6745 rela.r_addend = got_offset;
6746 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6747 loc += sizeof (Elf32_External_Rela);
6748
6749 /* Provide the @l relocation for the second instruction. */
6750 rela.r_offset = (htab->plt->output_section->vma
6751 + htab->plt->output_offset
6752 + ent->plt.offset + 6);
6753 rela.r_info = ELF32_R_INFO (htab->hgot->indx,
6754 R_PPC_ADDR16_LO);
6755 rela.r_addend = got_offset;
6756 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6757 loc += sizeof (Elf32_External_Rela);
6758
6759 /* Provide a relocation for the GOT entry corresponding to this
6760 PLT slot. Point it at the middle of the .plt entry. */
6761 rela.r_offset = (htab->sgotplt->output_section->vma
6762 + htab->sgotplt->output_offset
6763 + got_offset);
6764 rela.r_info = ELF32_R_INFO (htab->hplt->indx,
6765 R_PPC_ADDR32);
6766 rela.r_addend = ent->plt.offset + 16;
6767 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6768 }
6769
6770 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
6771 In particular, the offset for the relocation is not the
6772 address of the PLT entry for this function, as specified
6773 by the ABI. Instead, the offset is set to the address of
6774 the GOT slot for this function. See EABI 4.4.4.1. */
6775 rela.r_offset = (htab->sgotplt->output_section->vma
6776 + htab->sgotplt->output_offset
6777 + got_offset);
6778
a6aa5195
AM
6779 }
6780 else
6781 {
9d8504b1
PB
6782 rela.r_offset = (htab->plt->output_section->vma
6783 + htab->plt->output_offset
6784 + ent->plt.offset);
6785 if (htab->old_plt)
6786 {
6787 /* We don't need to fill in the .plt. The ppc dynamic
6788 linker will fill it in. */
6789 }
6790 else
6791 {
6792 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6793 + htab->glink->output_section->vma
6794 + htab->glink->output_offset);
6795 bfd_put_32 (output_bfd, val,
6796 htab->plt->contents + ent->plt.offset);
6797 }
a6aa5195 6798 }
e1a9cb8e 6799
a6aa5195 6800 /* Fill in the entry in the .rela.plt section. */
a6aa5195
AM
6801 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6802 rela.r_addend = 0;
e1a9cb8e 6803
a6aa5195
AM
6804 loc = (htab->relplt->contents
6805 + reloc_index * sizeof (Elf32_External_Rela));
6806 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 6807
a6aa5195
AM
6808 if (!h->def_regular)
6809 {
6810 /* Mark the symbol as undefined, rather than as defined in
6811 the .plt section. Leave the value alone. */
6812 sym->st_shndx = SHN_UNDEF;
6813 /* If the symbol is weak, we do need to clear the value.
6814 Otherwise, the PLT entry would provide a definition for
6815 the symbol even if the symbol wasn't defined anywhere,
6816 and so the symbol would never be NULL. */
6817 if (!h->ref_regular_nonweak)
6818 sym->st_value = 0;
6819 }
6820 doneone = TRUE;
6821 }
e1a9cb8e 6822
a6aa5195
AM
6823 if (!htab->old_plt)
6824 {
6825 bfd_vma plt;
6826 unsigned char *p;
e1a9cb8e 6827
a6aa5195
AM
6828 plt = (ent->plt.offset
6829 + htab->plt->output_section->vma
6830 + htab->plt->output_offset);
6831 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
e1a9cb8e 6832
a6aa5195
AM
6833 if (info->shared || info->pie)
6834 {
6835 bfd_vma got = 0;
6836
6837 if (ent->addend >= 32768)
6838 got = (ent->addend
6839 + ent->sec->output_section->vma
6840 + ent->sec->output_offset);
6841 else if (htab->elf.hgot != NULL)
6842 got = (htab->elf.hgot->root.u.def.value
6843 + htab->elf.hgot->root.u.def.section->output_section->vma
6844 + htab->elf.hgot->root.u.def.section->output_offset);
6845
6846 plt -= got;
6847
6848 if (plt + 0x8000 < 0x10000)
6849 {
6850 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6851 p += 4;
6852 bfd_put_32 (output_bfd, MTCTR_11, p);
6853 p += 4;
6854 bfd_put_32 (output_bfd, BCTR, p);
6855 p += 4;
6856 bfd_put_32 (output_bfd, NOP, p);
6857 p += 4;
6858 }
6859 else
6860 {
6861 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6862 p += 4;
6863 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6864 p += 4;
6865 bfd_put_32 (output_bfd, MTCTR_11, p);
6866 p += 4;
6867 bfd_put_32 (output_bfd, BCTR, p);
6868 p += 4;
6869 }
6870 }
6871 else
6872 {
6873 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6874 p += 4;
6875 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6876 p += 4;
6877 bfd_put_32 (output_bfd, MTCTR_11, p);
6878 p += 4;
6879 bfd_put_32 (output_bfd, BCTR, p);
6880 p += 4;
28e99bb6
AM
6881
6882 /* We only need one non-PIC glink stub. */
6883 break;
a6aa5195
AM
6884 }
6885 }
6886 else
6887 break;
6888 }
e1a9cb8e 6889
25dbc73a
AM
6890 if (h->needs_copy)
6891 {
6892 asection *s;
6893 Elf_Internal_Rela rela;
6894 bfd_byte *loc;
e1a9cb8e 6895
25dbc73a 6896 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 6897
25dbc73a
AM
6898#ifdef DEBUG
6899 fprintf (stderr, ", copy");
6900#endif
e1a9cb8e 6901
25dbc73a 6902 BFD_ASSERT (h->dynindx != -1);
86bbe32f 6903
4dc4a9a5 6904 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
6905 s = htab->relsbss;
6906 else
6907 s = htab->relbss;
6908 BFD_ASSERT (s != NULL);
e1a9cb8e 6909
25dbc73a
AM
6910 rela.r_offset = (h->root.u.def.value
6911 + h->root.u.def.section->output_section->vma
6912 + h->root.u.def.section->output_offset);
6913 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
6914 rela.r_addend = 0;
6915 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6916 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6917 }
e1a9cb8e 6918
25dbc73a
AM
6919#ifdef DEBUG
6920 fprintf (stderr, "\n");
6921#endif
e1a9cb8e 6922
25dbc73a 6923 /* Mark some specially defined symbols as absolute. */
9d8504b1
PB
6924 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
6925 || (!htab->is_vxworks
6926 && (h == htab->elf.hgot
6927 || strcmp (h->root.root.string,
6928 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
25dbc73a 6929 sym->st_shndx = SHN_ABS;
e1a9cb8e 6930
25dbc73a
AM
6931 return TRUE;
6932}
6933\f
6934static enum elf_reloc_type_class
6935ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 6936{
25dbc73a
AM
6937 switch (ELF32_R_TYPE (rela->r_info))
6938 {
6939 case R_PPC_RELATIVE:
6940 return reloc_class_relative;
6941 case R_PPC_REL24:
6942 case R_PPC_ADDR24:
6943 case R_PPC_JMP_SLOT:
6944 return reloc_class_plt;
6945 case R_PPC_COPY:
6946 return reloc_class_copy;
6947 default:
6948 return reloc_class_normal;
6949 }
e1a9cb8e 6950}
25dbc73a
AM
6951\f
6952/* Finish up the dynamic sections. */
e1a9cb8e 6953
25dbc73a
AM
6954static bfd_boolean
6955ppc_elf_finish_dynamic_sections (bfd *output_bfd,
6956 struct bfd_link_info *info)
e1a9cb8e 6957{
25dbc73a 6958 asection *sdyn;
9d8504b1 6959 asection *splt;
25dbc73a 6960 struct ppc_elf_link_hash_table *htab;
1fe44d79 6961 bfd_vma got;
9d8504b1 6962 bfd * dynobj;
e1a9cb8e 6963
25dbc73a
AM
6964#ifdef DEBUG
6965 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
6966#endif
6b0817e5 6967
25dbc73a 6968 htab = ppc_elf_hash_table (info);
9d8504b1
PB
6969 dynobj = elf_hash_table (info)->dynobj;
6970 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
6971 if (htab->is_vxworks)
6972 splt = bfd_get_section_by_name (dynobj, ".plt");
6973 else
6974 splt = NULL;
e1a9cb8e 6975
1fe44d79
AM
6976 got = 0;
6977 if (htab->elf.hgot != NULL)
6978 got = (htab->elf.hgot->root.u.def.value
6979 + htab->elf.hgot->root.u.def.section->output_section->vma
6980 + htab->elf.hgot->root.u.def.section->output_offset);
6981
25dbc73a 6982 if (htab->elf.dynamic_sections_created)
e1a9cb8e 6983 {
25dbc73a 6984 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 6985
25dbc73a 6986 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 6987
25dbc73a
AM
6988 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6989 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6990 for (; dyncon < dynconend; dyncon++)
6991 {
6992 Elf_Internal_Dyn dyn;
6993 asection *s;
e1a9cb8e 6994
9d8504b1 6995 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 6996
25dbc73a
AM
6997 switch (dyn.d_tag)
6998 {
6999 case DT_PLTGOT:
9d8504b1
PB
7000 if (htab->is_vxworks)
7001 s = htab->sgotplt;
7002 else
7003 s = htab->plt;
25dbc73a
AM
7004 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7005 break;
86bbe32f 7006
25dbc73a
AM
7007 case DT_PLTRELSZ:
7008 dyn.d_un.d_val = htab->relplt->size;
7009 break;
e1a9cb8e 7010
25dbc73a
AM
7011 case DT_JMPREL:
7012 s = htab->relplt;
7013 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7014 break;
2f89ff8d 7015
1fe44d79
AM
7016 case DT_PPC_GOT:
7017 dyn.d_un.d_ptr = got;
d7128ce4
AM
7018 break;
7019
9d8504b1
PB
7020 case DT_RELASZ:
7021 if (htab->is_vxworks)
7022 {
7023 if (htab->relplt)
7024 dyn.d_un.d_ptr -= htab->relplt->size;
7025 break;
7026 }
7027 continue;
7028
25dbc73a
AM
7029 default:
7030 continue;
7031 }
4c45e5c9 7032
25dbc73a
AM
7033 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7034 }
7035 }
4c45e5c9 7036
25dbc73a
AM
7037 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7038 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
3b36f7e6 7039 if (htab->got != NULL)
25dbc73a 7040 {
3b36f7e6
AM
7041 unsigned char *p = htab->got->contents;
7042 bfd_vma val;
2f89ff8d 7043
3b36f7e6 7044 p += elf_hash_table (info)->hgot->root.u.def.value;
9d8504b1 7045 if (htab->old_plt && !htab->is_vxworks)
d7128ce4 7046 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
3b36f7e6
AM
7047
7048 val = 0;
7049 if (sdyn != NULL)
7050 val = sdyn->output_section->vma + sdyn->output_offset;
7051 bfd_put_32 (output_bfd, val, p);
25dbc73a
AM
7052
7053 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7054 }
7055
9d8504b1
PB
7056 /* Fill in the first entry in the VxWorks procedure linkage table. */
7057 if (splt && splt->size > 0)
7058 {
7059 /* Use the right PLT. */
7060 static const bfd_vma *plt_entry = NULL;
7061 plt_entry = info->shared ?
7062 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7063
7064 if (!info->shared)
7065 {
7066 bfd_vma got_value =
7067 (htab->hgot->root.u.def.section->output_section->vma
7068 + htab->hgot->root.u.def.section->output_offset
7069 + htab->hgot->root.u.def.value);
7070 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7071
7072 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7073 splt->contents + 0);
7074 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7075 splt->contents + 4);
7076 }
7077 else
7078 {
7079 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7080 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7081 }
7082 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7083 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7084 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7085 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7086 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7087 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7088
7089 if (! info->shared)
7090 {
7091 Elf_Internal_Rela rela;
7092 bfd_byte *loc;
7093
7094 loc = htab->srelplt2->contents;
7095
7096 /* Output the @ha relocation for the first instruction. */
7097 rela.r_offset = (htab->plt->output_section->vma
7098 + htab->plt->output_offset
7099 + 2);
7100 rela.r_info = ELF32_R_INFO (htab->hgot->indx, R_PPC_ADDR16_HA);
7101 rela.r_addend = 0;
7102 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7103 loc += sizeof (Elf32_External_Rela);
7104
7105 /* Output the @l relocation for the second instruction. */
7106 rela.r_offset = (htab->plt->output_section->vma
7107 + htab->plt->output_offset
7108 + 6);
7109 rela.r_info = ELF32_R_INFO (htab->hgot->indx, R_PPC_ADDR16_LO);
7110 rela.r_addend = 0;
7111 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7112 loc += sizeof (Elf32_External_Rela);
7113
7114 /* Fix up the remaining relocations. They may have the wrong
7115 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7116 in which symbols were output. */
7117 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7118 {
7119 Elf_Internal_Rela rel;
7120
7121 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7122 rel.r_info = ELF32_R_INFO (htab->hgot->indx, R_PPC_ADDR16_HA);
7123 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7124 loc += sizeof (Elf32_External_Rela);
7125
7126 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7127 rel.r_info = ELF32_R_INFO (htab->hgot->indx, R_PPC_ADDR16_LO);
7128 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7129 loc += sizeof (Elf32_External_Rela);
7130
7131 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7132 rel.r_info = ELF32_R_INFO (htab->hplt->indx, R_PPC_ADDR32);
7133 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7134 loc += sizeof (Elf32_External_Rela);
7135 }
7136 }
7137 }
7138
d7128ce4
AM
7139 if (htab->glink != NULL && htab->glink->contents != NULL)
7140 {
7141 unsigned char *p;
7142 unsigned char *endp;
a6aa5195 7143 bfd_vma res0;
d7128ce4 7144 unsigned int i;
a6aa5195
AM
7145
7146 /*
7147 * PIC glink code is the following:
7148 *
7149 * # ith PLT code stub.
7150 * addis 11,30,(plt+(i-1)*4-got)@ha
7151 * lwz 11,(plt+(i-1)*4-got)@l(11)
7152 * mtctr 11
7153 * bctr
7154 *
7155 * # A table of branches, one for each plt entry.
7156 * # The idea is that the plt call stub loads ctr (and r11) with these
7157 * # addresses, so (r11 - res_0) gives the plt index * 4.
7158 * res_0: b PLTresolve
7159 * res_1: b PLTresolve
7160 * .
7161 * # Some number of entries towards the end can be nops
7162 * res_n_m3: nop
7163 * res_n_m2: nop
7164 * res_n_m1:
7165 *
7166 * PLTresolve:
7167 * addis 11,11,(1f-res_0)@ha
7168 * mflr 0
7169 * bcl 20,31,1f
7170 * 1: addi 11,11,(1b-res_0)@l
7171 * mflr 12
7172 * mtlr 0
7173 * sub 11,11,12 # r11 = index * 4
7174 * addis 12,12,(got+4-1b)@ha
7175 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7176 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7177 * mtctr 0
7178 * add 0,11,11
7179 * add 11,0,11 # r11 = index * 12 = reloc offset.
7180 * bctr
7181 */
7182 static const unsigned int pic_plt_resolve[] =
7183 {
7184 ADDIS_11_11,
7185 MFLR_0,
7186 BCL_20_31,
7187 ADDI_11_11,
7188 MFLR_12,
7189 MTLR_0,
7190 SUB_11_11_12,
7191 ADDIS_12_12,
7192 LWZ_0_12,
7193 LWZ_12_12,
7194 MTCTR_0,
7195 ADD_0_11_11,
7196 ADD_11_0_11,
7197 BCTR,
7198 NOP,
7199 NOP
7200 };
7201
d7128ce4
AM
7202 static const unsigned int plt_resolve[] =
7203 {
a6aa5195
AM
7204 LIS_12,
7205 ADDIS_11_11,
7206 LWZ_0_12,
7207 ADDI_11_11,
d7128ce4 7208 MTCTR_0,
7e8aeb9a 7209 ADD_0_11_11,
a6aa5195 7210 LWZ_12_12,
7e8aeb9a 7211 ADD_11_0_11,
d7128ce4
AM
7212 BCTR,
7213 NOP,
7214 NOP,
a6aa5195
AM
7215 NOP,
7216 NOP,
7217 NOP,
7218 NOP,
d7128ce4
AM
7219 NOP
7220 };
7221
a6aa5195
AM
7222 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7223 abort ();
7224 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
7225 abort ();
7226
a6aa5195 7227 /* Build the branch table, one for each plt entry (less one),
86b9da88 7228 and perhaps some padding. */
a6aa5195
AM
7229 p = htab->glink->contents;
7230 p += htab->glink_pltresolve;
86b9da88
AM
7231 endp = htab->glink->contents;
7232 endp += htab->glink->size - GLINK_PLTRESOLVE;
7233 while (p < endp - 8 * 4)
7234 {
7235 bfd_put_32 (output_bfd, B + endp - p, p);
7236 p += 4;
7237 }
7238 while (p < endp)
7239 {
7240 bfd_put_32 (output_bfd, NOP, p);
7241 p += 4;
7242 }
7243
7e8aeb9a 7244 res0 = (htab->glink_pltresolve
86b9da88
AM
7245 + htab->glink->output_section->vma
7246 + htab->glink->output_offset);
7247
7248 /* Last comes the PLTresolve stub. */
7e8aeb9a
AM
7249 if (info->shared || info->pie)
7250 {
a6aa5195 7251 bfd_vma bcl;
d7128ce4 7252
a6aa5195 7253 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 7254 {
a6aa5195 7255 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7e8aeb9a
AM
7256 p += 4;
7257 }
a6aa5195
AM
7258 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7259
7260 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7261 + htab->glink->output_section->vma
7262 + htab->glink->output_offset);
7263
7264 bfd_put_32 (output_bfd,
7265 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7266 bfd_put_32 (output_bfd,
7267 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7268 bfd_put_32 (output_bfd,
7269 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7270 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7271 {
7272 bfd_put_32 (output_bfd,
7273 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7274 bfd_put_32 (output_bfd,
7275 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7276 }
7277 else
7278 {
7279 bfd_put_32 (output_bfd,
7280 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7281 bfd_put_32 (output_bfd,
7282 LWZ_12_12 + 4, p + 9*4);
7283 }
7e8aeb9a
AM
7284 }
7285 else
d7128ce4 7286 {
a6aa5195 7287 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a
AM
7288 {
7289 bfd_put_32 (output_bfd, plt_resolve[i], p);
7290 p += 4;
7291 }
a6aa5195
AM
7292 p -= 4 * ARRAY_SIZE (plt_resolve);
7293
7294 bfd_put_32 (output_bfd,
7295 LIS_12 + PPC_HA (got + 4), p + 0*4);
7296 bfd_put_32 (output_bfd,
7297 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
7298 bfd_put_32 (output_bfd,
7299 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
7300 if (PPC_HA (got + 4) == PPC_HA (got + 8))
7301 {
7302 bfd_put_32 (output_bfd,
7303 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
7304 bfd_put_32 (output_bfd,
7305 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
7306 }
7307 else
7308 {
7309 bfd_put_32 (output_bfd,
7310 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
7311 bfd_put_32 (output_bfd,
7312 LWZ_12_12 + 4, p + 6*4);
7313 }
d7128ce4 7314 }
d7128ce4
AM
7315 }
7316
25dbc73a
AM
7317 return TRUE;
7318}
e1a9cb8e 7319\f
252b5132
RH
7320#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7321#define TARGET_LITTLE_NAME "elf32-powerpcle"
7322#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7323#define TARGET_BIG_NAME "elf32-powerpc"
7324#define ELF_ARCH bfd_arch_powerpc
7325#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
7326#ifdef __QNXTARGET__
7327#define ELF_MAXPAGESIZE 0x1000
7328#else
252b5132 7329#define ELF_MAXPAGESIZE 0x10000
d0facd1b 7330#endif
b1342370 7331#define ELF_MINPAGESIZE 0x1000
252b5132
RH
7332#define elf_info_to_howto ppc_elf_info_to_howto
7333
7334#ifdef EM_CYGNUS_POWERPC
7335#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7336#endif
7337
7338#ifdef EM_PPC_OLD
7339#define ELF_MACHINE_ALT2 EM_PPC_OLD
7340#endif
7341
7342#define elf_backend_plt_not_loaded 1
252b5132 7343#define elf_backend_can_gc_sections 1
51b64d56 7344#define elf_backend_can_refcount 1
b491616a 7345#define elf_backend_rela_normal 1
252b5132 7346
43c40ab2 7347#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 7348#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 7349#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132
RH
7350#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7351#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 7352#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
252b5132 7353
feee612b 7354#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
7355#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7356#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7357#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7358#define elf_backend_relocate_section ppc_elf_relocate_section
7359#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7360#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 7361#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
7362#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7363#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7364#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7365#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7366#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7367#define elf_backend_fake_sections ppc_elf_fake_sections
7368#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
c5fccbec
DJ
7369#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7370#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
29c2fb7c 7371#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
7372#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7373#define elf_backend_final_write_processing ppc_elf_final_write_processing
7374#define elf_backend_write_section ppc_elf_write_section
551b43fd 7375#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 7376#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
252b5132
RH
7377
7378#include "elf32-target.h"
9d8504b1
PB
7379
7380/* VxWorks Target */
7381
7382#undef TARGET_LITTLE_SYM
7383#undef TARGET_LITTLE_NAME
7384
7385#undef TARGET_BIG_SYM
7386#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7387#undef TARGET_BIG_NAME
7388#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7389
d5e3d971
PB
7390/* VxWorks uses the elf default section flags for .plt. */
7391static const struct bfd_elf_special_section *
7392ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 7393{
d5e3d971
PB
7394 if (sec->name == NULL)
7395 return NULL;
7396
7397 if (strcmp (sec->name, ".plt") == 0)
7398 return _bfd_elf_get_sec_type_attr (abfd, sec);
7399
7400 return ppc_elf_get_sec_type_attr (abfd, sec);
7401}
9d8504b1
PB
7402
7403/* Like ppc_elf_link_hash_table_create, but overrides
7404 appropriately for VxWorks. */
7405static struct bfd_link_hash_table *
7406ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
7407{
7408 struct bfd_link_hash_table *ret;
7409
7410 ret = ppc_elf_link_hash_table_create (abfd);
7411 if (ret)
7412 {
7413 struct ppc_elf_link_hash_table *htab
7414 = (struct ppc_elf_link_hash_table *)ret;
7415 htab->is_vxworks = 1;
7416 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
7417 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
7418 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
7419 }
7420 return ret;
7421}
7422
7423/* Tweak magic VxWorks symbols as they are loaded. */
7424static bfd_boolean
7425ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
7426 struct bfd_link_info *info,
7427 Elf_Internal_Sym *sym,
7428 const char **namep ATTRIBUTE_UNUSED,
7429 flagword *flagsp ATTRIBUTE_UNUSED,
7430 asection **secp,
7431 bfd_vma *valp)
7432{
7433 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
7434 valp))
7435 return FALSE;
7436
7437 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
7438}
7439
7440/* Tweak magic VxWorks symbols as they are written to the output file. */
7441static bfd_boolean
7442elf_i386_vxworks_link_output_symbol_hook (struct bfd_link_info *info
7443 ATTRIBUTE_UNUSED,
7444 const char *name,
7445 Elf_Internal_Sym *sym,
7446 asection *input_sec ATTRIBUTE_UNUSED,
7447 struct elf_link_hash_entry *h
7448 ATTRIBUTE_UNUSED)
7449{
7450 /* Ignore the first dummy symbol. */
7451 if (!name)
7452 return TRUE;
7453
7454 return elf_vxworks_link_output_symbol_hook (name, sym);
7455}
7456
7457static void
7458ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
7459{
7460 ppc_elf_final_write_processing(abfd, linker);
7461 elf_vxworks_final_write_processing(abfd, linker);
7462}
7463
7464/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7465 define it. */
7466#undef elf_backend_want_plt_sym
7467#define elf_backend_want_plt_sym 1
7468#undef elf_backend_want_got_plt
7469#define elf_backend_want_got_plt 1
7470#undef elf_backend_got_symbol_offset
7471#define elf_backend_got_symbol_offset 0
7472#undef elf_backend_plt_not_loaded
7473#define elf_backend_plt_not_loaded 0
7474#undef elf_backend_plt_readonly
7475#define elf_backend_plt_readonly 1
7476#undef elf_backend_got_header_size
7477#define elf_backend_got_header_size 12
7478
7479#undef bfd_elf32_bfd_link_hash_table_create
7480#define bfd_elf32_bfd_link_hash_table_create \
7481 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
7482#undef elf_backend_add_symbol_hook
7483#define elf_backend_add_symbol_hook \
7484 ppc_elf_vxworks_add_symbol_hook
7485#undef elf_backend_link_output_symbol_hook
7486#define elf_backend_link_output_symbol_hook \
7487 elf_i386_vxworks_link_output_symbol_hook
7488#undef elf_backend_final_write_processing
7489#define elf_backend_final_write_processing \
7490 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
7491#undef elf_backend_get_sec_type_attr
7492#define elf_backend_get_sec_type_attr \
7493 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
7494#undef elf_backend_emit_relocs
7495#define elf_backend_emit_relocs \
7496 elf_vxworks_emit_relocs
7497
7498#undef elf32_bed
7499#define elf32_bed ppc_elf_vxworks_bed
7500
7501#include "elf32-target.h"
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