projects / deliverable / binutils-gdb.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
*** empty log message ***
[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,
66eb6687 3 2004, 2005, 2006 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
183e98be 28#include <stdarg.h>
252b5132
RH		 29#include "bfd.h"
30#include "sysdep.h"
31#include "bfdlink.h"
32#include "libbfd.h"
33#include "elf-bfd.h"
34#include "elf/ppc.h"
7619e7c7 35#include "elf32-ppc.h"
9d8504b1 36#include "elf-vxworks.h"
252b5132 37
f0fe0e16 38/* RELA relocations are used here. */
252b5132 39
252b5132 40static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 42static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 44
70bccea4
AM		 45/* Branch prediction bit for branch taken relocs. */
46#define BRANCH_PREDICT_BIT 0x200000
47/* Mask to set RA in memory instructions. */
48#define RA_REGISTER_MASK 0x001f0000
49/* Value to shift register by to insert RA. */
50#define RA_REGISTER_SHIFT 16
252b5132
RH		 51
52/* The name of the dynamic interpreter. This is put in the .interp
53 section. */
252b5132
RH		 54#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
55
d7128ce4 56/* For old-style PLT. */
252b5132
RH		 57/* The number of single-slot PLT entries (the rest use two slots). */
58#define PLT_NUM_SINGLE_ENTRIES 8192
59
d7128ce4 60/* For new-style .glink and .plt. */
a6aa5195 61#define GLINK_PLTRESOLVE 16*4
d7128ce4
AM		 62#define GLINK_ENTRY_SIZE 4*4
63
9d8504b1
PB		 64/* VxWorks uses its own plt layout, filled in by the static linker. */
65
66/* The standard VxWorks PLT entry. */
67#define VXWORKS_PLT_ENTRY_SIZE 32
68static const bfd_vma ppc_elf_vxworks_plt_entry
69 [VXWORKS_PLT_ENTRY_SIZE / 4] =
70 {
71 0x3d800000, /* lis r12,0 */
72 0x818c0000, /* lwz r12,0(r12) */
73 0x7d8903a6, /* mtctr r12 */
74 0x4e800420, /* bctr */
75 0x39600000, /* li r11,0 */
76 0x48000000, /* b 14 <.PLT0resolve+0x4> */
77 0x60000000, /* nop */
78 0x60000000, /* nop */
79 };
80static const bfd_vma ppc_elf_vxworks_pic_plt_entry
81 [VXWORKS_PLT_ENTRY_SIZE / 4] =
82 {
83 0x3d9e0000, /* addis r12,r30,0 */
84 0x818c0000, /* lwz r12,0(r12) */
85 0x7d8903a6, /* mtctr r12 */
86 0x4e800420, /* bctr */
87 0x39600000, /* li r11,0 */
88 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
89 0x60000000, /* nop */
90 0x60000000, /* nop */
91 };
92
93/* The initial VxWorks PLT entry. */
94#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
95static const bfd_vma ppc_elf_vxworks_plt0_entry
96 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
97 {
98 0x3d800000, /* lis r12,0 */
99 0x398c0000, /* addi r12,r12,0 */
100 0x800c0008, /* lwz r0,8(r12) */
101 0x7c0903a6, /* mtctr r0 */
102 0x818c0004, /* lwz r12,4(r12) */
103 0x4e800420, /* bctr */
104 0x60000000, /* nop */
105 0x60000000, /* nop */
106 };
107static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
108 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
109 {
110 0x819e0008, /* lwz r12,8(r30) */
111 0x7d8903a6, /* mtctr r12 */
112 0x819e0004, /* lwz r12,4(r30) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 };
119
120/* For executables, we have some additional relocations in
121 .rela.plt.unloaded, for the kernel loader. */
122
123/* The number of non-JMP_SLOT relocations per PLT0 slot. */
124#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
125/* The number of relocations in the PLTResolve slot. */
126#define VXWORKS_PLTRESOLVE_RELOCS 2
127/* The number of relocations in the PLTResolve slot when when creating
128 a shared library. */
129#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
130
d7128ce4 131/* Some instructions. */
d7128ce4 132#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM		 133#define ADDIS_11_30 0x3d7e0000
134#define ADDIS_12_12 0x3d8c0000
d7128ce4 135#define ADDI_11_11 0x396b0000
d7128ce4
AM		 136#define ADD_0_11_11 0x7c0b5a14
137#define ADD_11_0_11 0x7d605a14
a6aa5195
AM		 138#define B 0x48000000
139#define BCL_20_31 0x429f0005
d7128ce4 140#define BCTR 0x4e800420
7e8aeb9a
AM		 141#define LIS_11 0x3d600000
142#define LIS_12 0x3d800000
a6aa5195
AM		 143#define LWZU_0_12 0x840c0000
144#define LWZ_0_12 0x800c0000
145#define LWZ_11_11 0x816b0000
146#define LWZ_11_30 0x817e0000
147#define LWZ_12_12 0x818c0000
148#define MFLR_0 0x7c0802a6
149#define MFLR_12 0x7d8802a6
150#define MTCTR_0 0x7c0903a6
151#define MTCTR_11 0x7d6903a6
152#define MTLR_0 0x7c0803a6
153#define NOP 0x60000000
154#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM		 155
156/* Offset of tp and dtp pointers from start of TLS block. */
157#define TP_OFFSET 0x7000
158#define DTP_OFFSET 0x8000
7fce784e 159\f
e47cd125 160static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 161
8da6118f 162static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH		 163 /* This reloc does nothing. */
164 HOWTO (R_PPC_NONE, /* type */
165 0, /* rightshift */
166 2, /* size (0 = byte, 1 = short, 2 = long) */
167 32, /* bitsize */
b34976b6 168 FALSE, /* pc_relative */
252b5132
RH		 169 0, /* bitpos */
170 complain_overflow_bitfield, /* complain_on_overflow */
171 bfd_elf_generic_reloc, /* special_function */
172 "R_PPC_NONE", /* name */
b34976b6 173 FALSE, /* partial_inplace */
252b5132
RH		 174 0, /* src_mask */
175 0, /* dst_mask */
b34976b6 176 FALSE), /* pcrel_offset */
252b5132
RH		 177
178 /* A standard 32 bit relocation. */
179 HOWTO (R_PPC_ADDR32, /* type */
180 0, /* rightshift */
181 2, /* size (0 = byte, 1 = short, 2 = long) */
182 32, /* bitsize */
b34976b6 183 FALSE, /* pc_relative */
252b5132
RH		 184 0, /* bitpos */
185 complain_overflow_bitfield, /* complain_on_overflow */
186 bfd_elf_generic_reloc, /* special_function */
187 "R_PPC_ADDR32", /* name */
b34976b6 188 FALSE, /* partial_inplace */
252b5132
RH		 189 0, /* src_mask */
190 0xffffffff, /* dst_mask */
b34976b6 191 FALSE), /* pcrel_offset */
252b5132
RH		 192
193 /* An absolute 26 bit branch; the lower two bits must be zero.
194 FIXME: we don't check that, we just clear them. */
195 HOWTO (R_PPC_ADDR24, /* type */
196 0, /* rightshift */
197 2, /* size (0 = byte, 1 = short, 2 = long) */
198 26, /* bitsize */
b34976b6 199 FALSE, /* pc_relative */
252b5132
RH		 200 0, /* bitpos */
201 complain_overflow_bitfield, /* complain_on_overflow */
202 bfd_elf_generic_reloc, /* special_function */
203 "R_PPC_ADDR24", /* name */
b34976b6 204 FALSE, /* partial_inplace */
252b5132
RH		 205 0, /* src_mask */
206 0x3fffffc, /* dst_mask */
b34976b6 207 FALSE), /* pcrel_offset */
252b5132
RH		 208
209 /* A standard 16 bit relocation. */
210 HOWTO (R_PPC_ADDR16, /* type */
211 0, /* rightshift */
212 1, /* size (0 = byte, 1 = short, 2 = long) */
213 16, /* bitsize */
b34976b6 214 FALSE, /* pc_relative */
252b5132
RH		 215 0, /* bitpos */
216 complain_overflow_bitfield, /* complain_on_overflow */
217 bfd_elf_generic_reloc, /* special_function */
218 "R_PPC_ADDR16", /* name */
b34976b6 219 FALSE, /* partial_inplace */
252b5132
RH		 220 0, /* src_mask */
221 0xffff, /* dst_mask */
b34976b6 222 FALSE), /* pcrel_offset */
252b5132
RH		 223
224 /* A 16 bit relocation without overflow. */
225 HOWTO (R_PPC_ADDR16_LO, /* type */
226 0, /* rightshift */
227 1, /* size (0 = byte, 1 = short, 2 = long) */
228 16, /* bitsize */
b34976b6 229 FALSE, /* pc_relative */
252b5132
RH		 230 0, /* bitpos */
231 complain_overflow_dont,/* complain_on_overflow */
232 bfd_elf_generic_reloc, /* special_function */
233 "R_PPC_ADDR16_LO", /* name */
b34976b6 234 FALSE, /* partial_inplace */
252b5132
RH		 235 0, /* src_mask */
236 0xffff, /* dst_mask */
b34976b6 237 FALSE), /* pcrel_offset */
252b5132
RH		 238
239 /* The high order 16 bits of an address. */
240 HOWTO (R_PPC_ADDR16_HI, /* type */
241 16, /* rightshift */
242 1, /* size (0 = byte, 1 = short, 2 = long) */
243 16, /* bitsize */
b34976b6 244 FALSE, /* pc_relative */
252b5132
RH		 245 0, /* bitpos */
246 complain_overflow_dont, /* complain_on_overflow */
247 bfd_elf_generic_reloc, /* special_function */
248 "R_PPC_ADDR16_HI", /* name */
b34976b6 249 FALSE, /* partial_inplace */
252b5132
RH		 250 0, /* src_mask */
251 0xffff, /* dst_mask */
b34976b6 252 FALSE), /* pcrel_offset */
252b5132
RH		 253
254 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 255 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH		 256 HOWTO (R_PPC_ADDR16_HA, /* type */
257 16, /* rightshift */
258 1, /* size (0 = byte, 1 = short, 2 = long) */
259 16, /* bitsize */
b34976b6 260 FALSE, /* pc_relative */
252b5132
RH		 261 0, /* bitpos */
262 complain_overflow_dont, /* complain_on_overflow */
263 ppc_elf_addr16_ha_reloc, /* special_function */
264 "R_PPC_ADDR16_HA", /* name */
b34976b6 265 FALSE, /* partial_inplace */
252b5132
RH		 266 0, /* src_mask */
267 0xffff, /* dst_mask */
b34976b6 268 FALSE), /* pcrel_offset */
252b5132
RH		 269
270 /* An absolute 16 bit branch; the lower two bits must be zero.
271 FIXME: we don't check that, we just clear them. */
272 HOWTO (R_PPC_ADDR14, /* type */
273 0, /* rightshift */
274 2, /* size (0 = byte, 1 = short, 2 = long) */
275 16, /* bitsize */
b34976b6 276 FALSE, /* pc_relative */
252b5132
RH		 277 0, /* bitpos */
278 complain_overflow_bitfield, /* complain_on_overflow */
279 bfd_elf_generic_reloc, /* special_function */
280 "R_PPC_ADDR14", /* name */
b34976b6 281 FALSE, /* partial_inplace */
252b5132
RH		 282 0, /* src_mask */
283 0xfffc, /* dst_mask */
b34976b6 284 FALSE), /* pcrel_offset */
252b5132
RH		 285
286 /* An absolute 16 bit branch, for which bit 10 should be set to
287 indicate that the branch is expected to be taken. The lower two
8da6118f 288 bits must be zero. */
252b5132
RH		 289 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
290 0, /* rightshift */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
292 16, /* bitsize */
b34976b6 293 FALSE, /* pc_relative */
252b5132
RH		 294 0, /* bitpos */
295 complain_overflow_bitfield, /* complain_on_overflow */
296 bfd_elf_generic_reloc, /* special_function */
297 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 298 FALSE, /* partial_inplace */
252b5132
RH		 299 0, /* src_mask */
300 0xfffc, /* dst_mask */
b34976b6 301 FALSE), /* pcrel_offset */
252b5132
RH		 302
303 /* An absolute 16 bit branch, for which bit 10 should be set to
304 indicate that the branch is not expected to be taken. The lower
305 two bits must be zero. */
306 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
307 0, /* rightshift */
308 2, /* size (0 = byte, 1 = short, 2 = long) */
309 16, /* bitsize */
b34976b6 310 FALSE, /* pc_relative */
252b5132
RH		 311 0, /* bitpos */
312 complain_overflow_bitfield, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 315 FALSE, /* partial_inplace */
252b5132
RH		 316 0, /* src_mask */
317 0xfffc, /* dst_mask */
b34976b6 318 FALSE), /* pcrel_offset */
252b5132 319
8da6118f 320 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH		 321 HOWTO (R_PPC_REL24, /* type */
322 0, /* rightshift */
323 2, /* size (0 = byte, 1 = short, 2 = long) */
324 26, /* bitsize */
b34976b6 325 TRUE, /* pc_relative */
252b5132
RH		 326 0, /* bitpos */
327 complain_overflow_signed, /* complain_on_overflow */
328 bfd_elf_generic_reloc, /* special_function */
329 "R_PPC_REL24", /* name */
b34976b6 330 FALSE, /* partial_inplace */
252b5132
RH		 331 0, /* src_mask */
332 0x3fffffc, /* dst_mask */
b34976b6 333 TRUE), /* pcrel_offset */
252b5132 334
8da6118f 335 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH		 336 HOWTO (R_PPC_REL14, /* type */
337 0, /* rightshift */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
339 16, /* bitsize */
b34976b6 340 TRUE, /* pc_relative */
252b5132
RH		 341 0, /* bitpos */
342 complain_overflow_signed, /* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_PPC_REL14", /* name */
b34976b6 345 FALSE, /* partial_inplace */
252b5132
RH		 346 0, /* src_mask */
347 0xfffc, /* dst_mask */
b34976b6 348 TRUE), /* pcrel_offset */
252b5132 349
8da6118f 350 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH		 351 the branch is expected to be taken. The lower two bits must be
352 zero. */
353 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
354 0, /* rightshift */
355 2, /* size (0 = byte, 1 = short, 2 = long) */
356 16, /* bitsize */
b34976b6 357 TRUE, /* pc_relative */
252b5132
RH		 358 0, /* bitpos */
359 complain_overflow_signed, /* complain_on_overflow */
360 bfd_elf_generic_reloc, /* special_function */
361 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 362 FALSE, /* partial_inplace */
252b5132
RH		 363 0, /* src_mask */
364 0xfffc, /* dst_mask */
b34976b6 365 TRUE), /* pcrel_offset */
252b5132 366
8da6118f 367 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH		 368 the branch is not expected to be taken. The lower two bits must
369 be zero. */
370 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
371 0, /* rightshift */
372 2, /* size (0 = byte, 1 = short, 2 = long) */
373 16, /* bitsize */
b34976b6 374 TRUE, /* pc_relative */
252b5132
RH		 375 0, /* bitpos */
376 complain_overflow_signed, /* complain_on_overflow */
377 bfd_elf_generic_reloc, /* special_function */
378 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 379 FALSE, /* partial_inplace */
252b5132
RH		 380 0, /* src_mask */
381 0xfffc, /* dst_mask */
b34976b6 382 TRUE), /* pcrel_offset */
252b5132
RH		 383
384 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
385 symbol. */
386 HOWTO (R_PPC_GOT16, /* type */
387 0, /* rightshift */
388 1, /* size (0 = byte, 1 = short, 2 = long) */
389 16, /* bitsize */
b34976b6 390 FALSE, /* pc_relative */
252b5132
RH		 391 0, /* bitpos */
392 complain_overflow_signed, /* complain_on_overflow */
393 bfd_elf_generic_reloc, /* special_function */
394 "R_PPC_GOT16", /* name */
b34976b6 395 FALSE, /* partial_inplace */
252b5132
RH		 396 0, /* src_mask */
397 0xffff, /* dst_mask */
b34976b6 398 FALSE), /* pcrel_offset */
252b5132
RH		 399
400 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
401 the symbol. */
402 HOWTO (R_PPC_GOT16_LO, /* type */
403 0, /* rightshift */
404 1, /* size (0 = byte, 1 = short, 2 = long) */
405 16, /* bitsize */
b34976b6 406 FALSE, /* pc_relative */
252b5132
RH		 407 0, /* bitpos */
408 complain_overflow_dont, /* complain_on_overflow */
409 bfd_elf_generic_reloc, /* special_function */
410 "R_PPC_GOT16_LO", /* name */
b34976b6 411 FALSE, /* partial_inplace */
252b5132
RH		 412 0, /* src_mask */
413 0xffff, /* dst_mask */
b34976b6 414 FALSE), /* pcrel_offset */
252b5132
RH		 415
416 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
417 the symbol. */
418 HOWTO (R_PPC_GOT16_HI, /* type */
419 16, /* rightshift */
420 1, /* size (0 = byte, 1 = short, 2 = long) */
421 16, /* bitsize */
b34976b6 422 FALSE, /* pc_relative */
252b5132
RH		 423 0, /* bitpos */
424 complain_overflow_bitfield, /* complain_on_overflow */
425 bfd_elf_generic_reloc, /* special_function */
426 "R_PPC_GOT16_HI", /* name */
b34976b6 427 FALSE, /* partial_inplace */
252b5132
RH		 428 0, /* src_mask */
429 0xffff, /* dst_mask */
b34976b6 430 FALSE), /* pcrel_offset */
252b5132
RH		 431
432 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
433 the symbol. */
434 HOWTO (R_PPC_GOT16_HA, /* type */
435 16, /* rightshift */
436 1, /* size (0 = byte, 1 = short, 2 = long) */
437 16, /* bitsize */
b34976b6 438 FALSE, /* pc_relative */
252b5132
RH		 439 0, /* bitpos */
440 complain_overflow_bitfield, /* complain_on_overflow */
441 ppc_elf_addr16_ha_reloc, /* special_function */
442 "R_PPC_GOT16_HA", /* name */
b34976b6 443 FALSE, /* partial_inplace */
252b5132
RH		 444 0, /* src_mask */
445 0xffff, /* dst_mask */
b34976b6 446 FALSE), /* pcrel_offset */
252b5132
RH		 447
448 /* Like R_PPC_REL24, but referring to the procedure linkage table
449 entry for the symbol. */
450 HOWTO (R_PPC_PLTREL24, /* type */
451 0, /* rightshift */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
453 26, /* bitsize */
b34976b6 454 TRUE, /* pc_relative */
252b5132
RH		 455 0, /* bitpos */
456 complain_overflow_signed, /* complain_on_overflow */
457 bfd_elf_generic_reloc, /* special_function */
458 "R_PPC_PLTREL24", /* name */
b34976b6 459 FALSE, /* partial_inplace */
252b5132
RH		 460 0, /* src_mask */
461 0x3fffffc, /* dst_mask */
b34976b6 462 TRUE), /* pcrel_offset */
252b5132
RH		 463
464 /* This is used only by the dynamic linker. The symbol should exist
465 both in the object being run and in some shared library. The
466 dynamic linker copies the data addressed by the symbol from the
467 shared library into the object, because the object being
468 run has to have the data at some particular address. */
469 HOWTO (R_PPC_COPY, /* type */
470 0, /* rightshift */
471 2, /* size (0 = byte, 1 = short, 2 = long) */
472 32, /* bitsize */
b34976b6 473 FALSE, /* pc_relative */
252b5132
RH		 474 0, /* bitpos */
475 complain_overflow_bitfield, /* complain_on_overflow */
476 bfd_elf_generic_reloc, /* special_function */
477 "R_PPC_COPY", /* name */
b34976b6 478 FALSE, /* partial_inplace */
252b5132
RH		 479 0, /* src_mask */
480 0, /* dst_mask */
b34976b6 481 FALSE), /* pcrel_offset */
252b5132
RH		 482
483 /* Like R_PPC_ADDR32, but used when setting global offset table
484 entries. */
485 HOWTO (R_PPC_GLOB_DAT, /* type */
486 0, /* rightshift */
487 2, /* size (0 = byte, 1 = short, 2 = long) */
488 32, /* bitsize */
b34976b6 489 FALSE, /* pc_relative */
252b5132
RH		 490 0, /* bitpos */
491 complain_overflow_bitfield, /* complain_on_overflow */
492 bfd_elf_generic_reloc, /* special_function */
493 "R_PPC_GLOB_DAT", /* name */
b34976b6 494 FALSE, /* partial_inplace */
252b5132
RH		 495 0, /* src_mask */
496 0xffffffff, /* dst_mask */
b34976b6 497 FALSE), /* pcrel_offset */
252b5132
RH		 498
499 /* Marks a procedure linkage table entry for a symbol. */
500 HOWTO (R_PPC_JMP_SLOT, /* type */
501 0, /* rightshift */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
503 32, /* bitsize */
b34976b6 504 FALSE, /* pc_relative */
252b5132
RH		 505 0, /* bitpos */
506 complain_overflow_bitfield, /* complain_on_overflow */
507 bfd_elf_generic_reloc, /* special_function */
508 "R_PPC_JMP_SLOT", /* name */
b34976b6 509 FALSE, /* partial_inplace */
252b5132
RH		 510 0, /* src_mask */
511 0, /* dst_mask */
b34976b6 512 FALSE), /* pcrel_offset */
252b5132
RH		 513
514 /* Used only by the dynamic linker. When the object is run, this
515 longword is set to the load address of the object, plus the
516 addend. */
517 HOWTO (R_PPC_RELATIVE, /* type */
518 0, /* rightshift */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
520 32, /* bitsize */
b34976b6 521 FALSE, /* pc_relative */
252b5132
RH		 522 0, /* bitpos */
523 complain_overflow_bitfield, /* complain_on_overflow */
524 bfd_elf_generic_reloc, /* special_function */
525 "R_PPC_RELATIVE", /* name */
b34976b6 526 FALSE, /* partial_inplace */
252b5132
RH		 527 0, /* src_mask */
528 0xffffffff, /* dst_mask */
b34976b6 529 FALSE), /* pcrel_offset */
252b5132
RH		 530
531 /* Like R_PPC_REL24, but uses the value of the symbol within the
532 object rather than the final value. Normally used for
533 _GLOBAL_OFFSET_TABLE_. */
534 HOWTO (R_PPC_LOCAL24PC, /* type */
535 0, /* rightshift */
536 2, /* size (0 = byte, 1 = short, 2 = long) */
537 26, /* bitsize */
b34976b6 538 TRUE, /* pc_relative */
252b5132
RH		 539 0, /* bitpos */
540 complain_overflow_signed, /* complain_on_overflow */
541 bfd_elf_generic_reloc, /* special_function */
542 "R_PPC_LOCAL24PC", /* name */
b34976b6 543 FALSE, /* partial_inplace */
252b5132
RH		 544 0, /* src_mask */
545 0x3fffffc, /* dst_mask */
b34976b6 546 TRUE), /* pcrel_offset */
252b5132
RH		 547
548 /* Like R_PPC_ADDR32, but may be unaligned. */
549 HOWTO (R_PPC_UADDR32, /* type */
550 0, /* rightshift */
551 2, /* size (0 = byte, 1 = short, 2 = long) */
552 32, /* bitsize */
b34976b6 553 FALSE, /* pc_relative */
252b5132
RH		 554 0, /* bitpos */
555 complain_overflow_bitfield, /* complain_on_overflow */
556 bfd_elf_generic_reloc, /* special_function */
557 "R_PPC_UADDR32", /* name */
b34976b6 558 FALSE, /* partial_inplace */
252b5132
RH		 559 0, /* src_mask */
560 0xffffffff, /* dst_mask */
b34976b6 561 FALSE), /* pcrel_offset */
252b5132
RH		 562
563 /* Like R_PPC_ADDR16, but may be unaligned. */
564 HOWTO (R_PPC_UADDR16, /* type */
565 0, /* rightshift */
566 1, /* size (0 = byte, 1 = short, 2 = long) */
567 16, /* bitsize */
b34976b6 568 FALSE, /* pc_relative */
252b5132
RH		 569 0, /* bitpos */
570 complain_overflow_bitfield, /* complain_on_overflow */
571 bfd_elf_generic_reloc, /* special_function */
572 "R_PPC_UADDR16", /* name */
b34976b6 573 FALSE, /* partial_inplace */
252b5132
RH		 574 0, /* src_mask */
575 0xffff, /* dst_mask */
b34976b6 576 FALSE), /* pcrel_offset */
252b5132
RH		 577
578 /* 32-bit PC relative */
579 HOWTO (R_PPC_REL32, /* type */
580 0, /* rightshift */
581 2, /* size (0 = byte, 1 = short, 2 = long) */
582 32, /* bitsize */
b34976b6 583 TRUE, /* pc_relative */
252b5132
RH		 584 0, /* bitpos */
585 complain_overflow_bitfield, /* complain_on_overflow */
586 bfd_elf_generic_reloc, /* special_function */
587 "R_PPC_REL32", /* name */
b34976b6 588 FALSE, /* partial_inplace */
252b5132
RH		 589 0, /* src_mask */
590 0xffffffff, /* dst_mask */
b34976b6 591 TRUE), /* pcrel_offset */
252b5132
RH		 592
593 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 594 FIXME: not supported. */
252b5132
RH		 595 HOWTO (R_PPC_PLT32, /* type */
596 0, /* rightshift */
597 2, /* size (0 = byte, 1 = short, 2 = long) */
598 32, /* bitsize */
b34976b6 599 FALSE, /* pc_relative */
252b5132
RH		 600 0, /* bitpos */
601 complain_overflow_bitfield, /* complain_on_overflow */
602 bfd_elf_generic_reloc, /* special_function */
603 "R_PPC_PLT32", /* name */
b34976b6 604 FALSE, /* partial_inplace */
252b5132
RH		 605 0, /* src_mask */
606 0, /* dst_mask */
b34976b6 607 FALSE), /* pcrel_offset */
252b5132
RH		 608
609 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 610 FIXME: not supported. */
252b5132
RH		 611 HOWTO (R_PPC_PLTREL32, /* type */
612 0, /* rightshift */
613 2, /* size (0 = byte, 1 = short, 2 = long) */
614 32, /* bitsize */
b34976b6 615 TRUE, /* pc_relative */
252b5132
RH		 616 0, /* bitpos */
617 complain_overflow_bitfield, /* complain_on_overflow */
618 bfd_elf_generic_reloc, /* special_function */
619 "R_PPC_PLTREL32", /* name */
b34976b6 620 FALSE, /* partial_inplace */
252b5132
RH		 621 0, /* src_mask */
622 0, /* dst_mask */
b34976b6 623 TRUE), /* pcrel_offset */
252b5132
RH		 624
625 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
626 the symbol. */
627 HOWTO (R_PPC_PLT16_LO, /* type */
628 0, /* rightshift */
629 1, /* size (0 = byte, 1 = short, 2 = long) */
630 16, /* bitsize */
b34976b6 631 FALSE, /* pc_relative */
252b5132
RH		 632 0, /* bitpos */
633 complain_overflow_dont, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC_PLT16_LO", /* name */
b34976b6 636 FALSE, /* partial_inplace */
252b5132
RH		 637 0, /* src_mask */
638 0xffff, /* dst_mask */
b34976b6 639 FALSE), /* pcrel_offset */
252b5132
RH		 640
641 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
642 the symbol. */
643 HOWTO (R_PPC_PLT16_HI, /* type */
644 16, /* rightshift */
645 1, /* size (0 = byte, 1 = short, 2 = long) */
646 16, /* bitsize */
b34976b6 647 FALSE, /* pc_relative */
252b5132
RH		 648 0, /* bitpos */
649 complain_overflow_bitfield, /* complain_on_overflow */
650 bfd_elf_generic_reloc, /* special_function */
651 "R_PPC_PLT16_HI", /* name */
b34976b6 652 FALSE, /* partial_inplace */
252b5132
RH		 653 0, /* src_mask */
654 0xffff, /* dst_mask */
b34976b6 655 FALSE), /* pcrel_offset */
252b5132
RH		 656
657 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
658 the symbol. */
659 HOWTO (R_PPC_PLT16_HA, /* type */
660 16, /* rightshift */
661 1, /* size (0 = byte, 1 = short, 2 = long) */
662 16, /* bitsize */
b34976b6 663 FALSE, /* pc_relative */
252b5132
RH		 664 0, /* bitpos */
665 complain_overflow_bitfield, /* complain_on_overflow */
666 ppc_elf_addr16_ha_reloc, /* special_function */
667 "R_PPC_PLT16_HA", /* name */
b34976b6 668 FALSE, /* partial_inplace */
252b5132
RH		 669 0, /* src_mask */
670 0xffff, /* dst_mask */
b34976b6 671 FALSE), /* pcrel_offset */
252b5132
RH		 672
673 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
674 small data items. */
675 HOWTO (R_PPC_SDAREL16, /* type */
676 0, /* rightshift */
677 1, /* size (0 = byte, 1 = short, 2 = long) */
678 16, /* bitsize */
b34976b6 679 FALSE, /* pc_relative */
252b5132
RH		 680 0, /* bitpos */
681 complain_overflow_signed, /* complain_on_overflow */
682 bfd_elf_generic_reloc, /* special_function */
683 "R_PPC_SDAREL16", /* name */
b34976b6 684 FALSE, /* partial_inplace */
252b5132
RH		 685 0, /* src_mask */
686 0xffff, /* dst_mask */
b34976b6 687 FALSE), /* pcrel_offset */
252b5132 688
c061c2d8 689 /* 16-bit section relative relocation. */
252b5132
RH		 690 HOWTO (R_PPC_SECTOFF, /* type */
691 0, /* rightshift */
c061c2d8
AM		 692 1, /* size (0 = byte, 1 = short, 2 = long) */
693 16, /* bitsize */
b34976b6 694 FALSE, /* pc_relative */
252b5132
RH		 695 0, /* bitpos */
696 complain_overflow_bitfield, /* complain_on_overflow */
697 bfd_elf_generic_reloc, /* special_function */
698 "R_PPC_SECTOFF", /* name */
b34976b6 699 FALSE, /* partial_inplace */
252b5132 700 0, /* src_mask */
c061c2d8 701 0xffff, /* dst_mask */
b34976b6 702 FALSE), /* pcrel_offset */
252b5132 703
c3668558 704 /* 16-bit lower half section relative relocation. */
252b5132
RH		 705 HOWTO (R_PPC_SECTOFF_LO, /* type */
706 0, /* rightshift */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
708 16, /* bitsize */
b34976b6 709 FALSE, /* pc_relative */
252b5132
RH		 710 0, /* bitpos */
711 complain_overflow_dont, /* complain_on_overflow */
712 bfd_elf_generic_reloc, /* special_function */
713 "R_PPC_SECTOFF_LO", /* name */
b34976b6 714 FALSE, /* partial_inplace */
252b5132
RH		 715 0, /* src_mask */
716 0xffff, /* dst_mask */
b34976b6 717 FALSE), /* pcrel_offset */
252b5132 718
c3668558 719 /* 16-bit upper half section relative relocation. */
252b5132
RH		 720 HOWTO (R_PPC_SECTOFF_HI, /* type */
721 16, /* rightshift */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
723 16, /* bitsize */
b34976b6 724 FALSE, /* pc_relative */
252b5132
RH		 725 0, /* bitpos */
726 complain_overflow_bitfield, /* complain_on_overflow */
727 bfd_elf_generic_reloc, /* special_function */
728 "R_PPC_SECTOFF_HI", /* name */
b34976b6 729 FALSE, /* partial_inplace */
252b5132
RH		 730 0, /* src_mask */
731 0xffff, /* dst_mask */
b34976b6 732 FALSE), /* pcrel_offset */
252b5132 733
c3668558 734 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH		 735 HOWTO (R_PPC_SECTOFF_HA, /* type */
736 16, /* rightshift */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
738 16, /* bitsize */
b34976b6 739 FALSE, /* pc_relative */
252b5132
RH		 740 0, /* bitpos */
741 complain_overflow_bitfield, /* complain_on_overflow */
742 ppc_elf_addr16_ha_reloc, /* special_function */
743 "R_PPC_SECTOFF_HA", /* name */
b34976b6 744 FALSE, /* partial_inplace */
252b5132
RH		 745 0, /* src_mask */
746 0xffff, /* dst_mask */
b34976b6 747 FALSE), /* pcrel_offset */
252b5132 748
7619e7c7
AM		 749 /* Marker reloc for TLS. */
750 HOWTO (R_PPC_TLS,
252b5132
RH		 751 0, /* rightshift */
752 2, /* size (0 = byte, 1 = short, 2 = long) */
753 32, /* bitsize */
b34976b6 754 FALSE, /* pc_relative */
252b5132 755 0, /* bitpos */
7619e7c7 756 complain_overflow_dont, /* complain_on_overflow */
252b5132 757 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM		 758 "R_PPC_TLS", /* name */
759 FALSE, /* partial_inplace */
760 0, /* src_mask */
761 0, /* dst_mask */
762 FALSE), /* pcrel_offset */
763
764 /* Computes the load module index of the load module that contains the
765 definition of its TLS sym. */
766 HOWTO (R_PPC_DTPMOD32,
767 0, /* rightshift */
768 2, /* size (0 = byte, 1 = short, 2 = long) */
769 32, /* bitsize */
770 FALSE, /* pc_relative */
771 0, /* bitpos */
772 complain_overflow_dont, /* complain_on_overflow */
773 ppc_elf_unhandled_reloc, /* special_function */
774 "R_PPC_DTPMOD32", /* name */
b34976b6 775 FALSE, /* partial_inplace */
252b5132
RH		 776 0, /* src_mask */
777 0xffffffff, /* dst_mask */
b34976b6 778 FALSE), /* pcrel_offset */
252b5132 779
7619e7c7
AM		 780 /* Computes a dtv-relative displacement, the difference between the value
781 of sym+add and the base address of the thread-local storage block that
782 contains the definition of sym, minus 0x8000. */
783 HOWTO (R_PPC_DTPREL32,
784 0, /* rightshift */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
786 32, /* bitsize */
787 FALSE, /* pc_relative */
788 0, /* bitpos */
789 complain_overflow_dont, /* complain_on_overflow */
790 ppc_elf_unhandled_reloc, /* special_function */
791 "R_PPC_DTPREL32", /* name */
792 FALSE, /* partial_inplace */
793 0, /* src_mask */
794 0xffffffff, /* dst_mask */
795 FALSE), /* pcrel_offset */
796
797 /* A 16 bit dtprel reloc. */
798 HOWTO (R_PPC_DTPREL16,
252b5132
RH		 799 0, /* rightshift */
800 1, /* size (0 = byte, 1 = short, 2 = long) */
801 16, /* bitsize */
b34976b6 802 FALSE, /* pc_relative */
252b5132 803 0, /* bitpos */
7619e7c7
AM		 804 complain_overflow_signed, /* complain_on_overflow */
805 ppc_elf_unhandled_reloc, /* special_function */
806 "R_PPC_DTPREL16", /* name */
b34976b6 807 FALSE, /* partial_inplace */
252b5132
RH		 808 0, /* src_mask */
809 0xffff, /* dst_mask */
b34976b6 810 FALSE), /* pcrel_offset */
252b5132 811
7619e7c7
AM		 812 /* Like DTPREL16, but no overflow. */
813 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH		 814 0, /* rightshift */
815 1, /* size (0 = byte, 1 = short, 2 = long) */
816 16, /* bitsize */
b34976b6 817 FALSE, /* pc_relative */
252b5132 818 0, /* bitpos */
7619e7c7
AM		 819 complain_overflow_dont, /* complain_on_overflow */
820 ppc_elf_unhandled_reloc, /* special_function */
821 "R_PPC_DTPREL16_LO", /* name */
b34976b6 822 FALSE, /* partial_inplace */
252b5132
RH		 823 0, /* src_mask */
824 0xffff, /* dst_mask */
b34976b6 825 FALSE), /* pcrel_offset */
252b5132 826
7619e7c7
AM		 827 /* Like DTPREL16_LO, but next higher group of 16 bits. */
828 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH		 829 16, /* rightshift */
830 1, /* size (0 = byte, 1 = short, 2 = long) */
831 16, /* bitsize */
b34976b6 832 FALSE, /* pc_relative */
252b5132
RH		 833 0, /* bitpos */
834 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 835 ppc_elf_unhandled_reloc, /* special_function */
836 "R_PPC_DTPREL16_HI", /* name */
b34976b6 837 FALSE, /* partial_inplace */
252b5132
RH		 838 0, /* src_mask */
839 0xffff, /* dst_mask */
b34976b6 840 FALSE), /* pcrel_offset */
252b5132 841
7619e7c7
AM		 842 /* Like DTPREL16_HI, but adjust for low 16 bits. */
843 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH		 844 16, /* rightshift */
845 1, /* size (0 = byte, 1 = short, 2 = long) */
846 16, /* bitsize */
b34976b6 847 FALSE, /* pc_relative */
252b5132
RH		 848 0, /* bitpos */
849 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 850 ppc_elf_unhandled_reloc, /* special_function */
851 "R_PPC_DTPREL16_HA", /* name */
b34976b6 852 FALSE, /* partial_inplace */
252b5132
RH		 853 0, /* src_mask */
854 0xffff, /* dst_mask */
b34976b6 855 FALSE), /* pcrel_offset */
252b5132 856
7619e7c7
AM		 857 /* Computes a tp-relative displacement, the difference between the value of
858 sym+add and the value of the thread pointer (r13). */
859 HOWTO (R_PPC_TPREL32,
860 0, /* rightshift */
861 2, /* size (0 = byte, 1 = short, 2 = long) */
862 32, /* bitsize */
863 FALSE, /* pc_relative */
864 0, /* bitpos */
865 complain_overflow_dont, /* complain_on_overflow */
866 ppc_elf_unhandled_reloc, /* special_function */
867 "R_PPC_TPREL32", /* name */
868 FALSE, /* partial_inplace */
869 0, /* src_mask */
870 0xffffffff, /* dst_mask */
871 FALSE), /* pcrel_offset */
872
873 /* A 16 bit tprel reloc. */
874 HOWTO (R_PPC_TPREL16,
252b5132
RH		 875 0, /* rightshift */
876 1, /* size (0 = byte, 1 = short, 2 = long) */
877 16, /* bitsize */
b34976b6 878 FALSE, /* pc_relative */
252b5132 879 0, /* bitpos */
7619e7c7
AM		 880 complain_overflow_signed, /* complain_on_overflow */
881 ppc_elf_unhandled_reloc, /* special_function */
882 "R_PPC_TPREL16", /* name */
b34976b6 883 FALSE, /* partial_inplace */
252b5132
RH		 884 0, /* src_mask */
885 0xffff, /* dst_mask */
b34976b6 886 FALSE), /* pcrel_offset */
252b5132 887
7619e7c7
AM		 888 /* Like TPREL16, but no overflow. */
889 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH		 890 0, /* rightshift */
891 1, /* size (0 = byte, 1 = short, 2 = long) */
892 16, /* bitsize */
b34976b6 893 FALSE, /* pc_relative */
252b5132 894 0, /* bitpos */
7619e7c7
AM		 895 complain_overflow_dont, /* complain_on_overflow */
896 ppc_elf_unhandled_reloc, /* special_function */
897 "R_PPC_TPREL16_LO", /* name */
b34976b6 898 FALSE, /* partial_inplace */
252b5132
RH		 899 0, /* src_mask */
900 0xffff, /* dst_mask */
b34976b6 901 FALSE), /* pcrel_offset */
252b5132 902
7619e7c7
AM		 903 /* Like TPREL16_LO, but next higher group of 16 bits. */
904 HOWTO (R_PPC_TPREL16_HI,
905 16, /* rightshift */
906 1, /* size (0 = byte, 1 = short, 2 = long) */
907 16, /* bitsize */
908 FALSE, /* pc_relative */
909 0, /* bitpos */
910 complain_overflow_dont, /* complain_on_overflow */
911 ppc_elf_unhandled_reloc, /* special_function */
912 "R_PPC_TPREL16_HI", /* name */
913 FALSE, /* partial_inplace */
914 0, /* src_mask */
915 0xffff, /* dst_mask */
916 FALSE), /* pcrel_offset */
917
918 /* Like TPREL16_HI, but adjust for low 16 bits. */
919 HOWTO (R_PPC_TPREL16_HA,
920 16, /* rightshift */
921 1, /* size (0 = byte, 1 = short, 2 = long) */
922 16, /* bitsize */
923 FALSE, /* pc_relative */
924 0, /* bitpos */
925 complain_overflow_dont, /* complain_on_overflow */
926 ppc_elf_unhandled_reloc, /* special_function */
927 "R_PPC_TPREL16_HA", /* name */
928 FALSE, /* partial_inplace */
929 0, /* src_mask */
930 0xffff, /* dst_mask */
931 FALSE), /* pcrel_offset */
932
933 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
934 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
935 to the first entry. */
936 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH		 937 0, /* rightshift */
938 1, /* size (0 = byte, 1 = short, 2 = long) */
939 16, /* bitsize */
b34976b6 940 FALSE, /* pc_relative */
252b5132
RH		 941 0, /* bitpos */
942 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM		 943 ppc_elf_unhandled_reloc, /* special_function */
944 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 945 FALSE, /* partial_inplace */
252b5132
RH		 946 0, /* src_mask */
947 0xffff, /* dst_mask */
b34976b6 948 FALSE), /* pcrel_offset */
252b5132 949
7619e7c7
AM		 950 /* Like GOT_TLSGD16, but no overflow. */
951 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 952 0, /* rightshift */
7619e7c7 953 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 954 16, /* bitsize */
b34976b6 955 FALSE, /* pc_relative */
252b5132 956 0, /* bitpos */
7619e7c7
AM		 957 complain_overflow_dont, /* complain_on_overflow */
958 ppc_elf_unhandled_reloc, /* special_function */
959 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 960 FALSE, /* partial_inplace */
252b5132
RH		 961 0, /* src_mask */
962 0xffff, /* dst_mask */
b34976b6 963 FALSE), /* pcrel_offset */
252b5132 964
7619e7c7
AM		 965 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
966 HOWTO (R_PPC_GOT_TLSGD16_HI,
967 16, /* rightshift */
968 1, /* size (0 = byte, 1 = short, 2 = long) */
969 16, /* bitsize */
970 FALSE, /* pc_relative */
971 0, /* bitpos */
972 complain_overflow_dont, /* complain_on_overflow */
973 ppc_elf_unhandled_reloc, /* special_function */
974 "R_PPC_GOT_TLSGD16_HI", /* name */
975 FALSE, /* partial_inplace */
976 0, /* src_mask */
977 0xffff, /* dst_mask */
978 FALSE), /* pcrel_offset */
252b5132 979
7619e7c7
AM		 980 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
981 HOWTO (R_PPC_GOT_TLSGD16_HA,
982 16, /* rightshift */
983 1, /* size (0 = byte, 1 = short, 2 = long) */
984 16, /* bitsize */
985 FALSE, /* pc_relative */
986 0, /* bitpos */
987 complain_overflow_dont, /* complain_on_overflow */
988 ppc_elf_unhandled_reloc, /* special_function */
989 "R_PPC_GOT_TLSGD16_HA", /* name */
990 FALSE, /* partial_inplace */
991 0, /* src_mask */
992 0xffff, /* dst_mask */
993 FALSE), /* pcrel_offset */
994
995 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
996 with values (sym+add)@dtpmod and zero, and computes the offset to the
997 first entry. */
998 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH		 999 0, /* rightshift */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1001 16, /* bitsize */
7619e7c7 1002 FALSE, /* pc_relative */
252b5132
RH		 1003 0, /* bitpos */
1004 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM		 1005 ppc_elf_unhandled_reloc, /* special_function */
1006 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1007 FALSE, /* partial_inplace */
252b5132
RH		 1008 0, /* src_mask */
1009 0xffff, /* dst_mask */
b34976b6 1010 FALSE), /* pcrel_offset */
252b5132 1011
7619e7c7
AM		 1012 /* Like GOT_TLSLD16, but no overflow. */
1013 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1014 0, /* rightshift */
7619e7c7
AM		 1015 1, /* size (0 = byte, 1 = short, 2 = long) */
1016 16, /* bitsize */
b34976b6 1017 FALSE, /* pc_relative */
252b5132
RH		 1018 0, /* bitpos */
1019 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 1020 ppc_elf_unhandled_reloc, /* special_function */
1021 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1022 FALSE, /* partial_inplace */
252b5132 1023 0, /* src_mask */
7619e7c7 1024 0xffff, /* dst_mask */
b34976b6 1025 FALSE), /* pcrel_offset */
252b5132 1026
7619e7c7
AM		 1027 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1028 HOWTO (R_PPC_GOT_TLSLD16_HI,
1029 16, /* rightshift */
1030 1, /* size (0 = byte, 1 = short, 2 = long) */
1031 16, /* bitsize */
b34976b6 1032 FALSE, /* pc_relative */
252b5132
RH		 1033 0, /* bitpos */
1034 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 1035 ppc_elf_unhandled_reloc, /* special_function */
1036 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1037 FALSE, /* partial_inplace */
252b5132 1038 0, /* src_mask */
7619e7c7 1039 0xffff, /* dst_mask */
b34976b6 1040 FALSE), /* pcrel_offset */
252b5132 1041
7619e7c7
AM		 1042 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1043 HOWTO (R_PPC_GOT_TLSLD16_HA,
1044 16, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 16, /* bitsize */
1047 FALSE, /* pc_relative */
1048 0, /* bitpos */
1049 complain_overflow_dont, /* complain_on_overflow */
1050 ppc_elf_unhandled_reloc, /* special_function */
1051 "R_PPC_GOT_TLSLD16_HA", /* name */
1052 FALSE, /* partial_inplace */
1053 0, /* src_mask */
1054 0xffff, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1056
1057 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1058 the offset to the entry. */
1059 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH		 1060 0, /* rightshift */
1061 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 16, /* bitsize */
b34976b6 1063 FALSE, /* pc_relative */
252b5132
RH		 1064 0, /* bitpos */
1065 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM		 1066 ppc_elf_unhandled_reloc, /* special_function */
1067 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1068 FALSE, /* partial_inplace */
252b5132
RH		 1069 0, /* src_mask */
1070 0xffff, /* dst_mask */
b34976b6 1071 FALSE), /* pcrel_offset */
252b5132 1072
7619e7c7
AM		 1073 /* Like GOT_DTPREL16, but no overflow. */
1074 HOWTO (R_PPC_GOT_DTPREL16_LO,
1075 0, /* rightshift */
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 16, /* bitsize */
1078 FALSE, /* pc_relative */
1079 0, /* bitpos */
1080 complain_overflow_dont, /* complain_on_overflow */
1081 ppc_elf_unhandled_reloc, /* special_function */
1082 "R_PPC_GOT_DTPREL16_LO", /* name */
1083 FALSE, /* partial_inplace */
1084 0, /* src_mask */
1085 0xffff, /* dst_mask */
1086 FALSE), /* pcrel_offset */
252b5132 1087
7619e7c7
AM		 1088 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1089 HOWTO (R_PPC_GOT_DTPREL16_HI,
1090 16, /* rightshift */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 16, /* bitsize */
1093 FALSE, /* pc_relative */
1094 0, /* bitpos */
1095 complain_overflow_dont, /* complain_on_overflow */
1096 ppc_elf_unhandled_reloc, /* special_function */
1097 "R_PPC_GOT_DTPREL16_HI", /* name */
1098 FALSE, /* partial_inplace */
1099 0, /* src_mask */
1100 0xffff, /* dst_mask */
1101 FALSE), /* pcrel_offset */
252b5132 1102
7619e7c7
AM		 1103 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1104 HOWTO (R_PPC_GOT_DTPREL16_HA,
1105 16, /* rightshift */
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 16, /* bitsize */
1108 FALSE, /* pc_relative */
1109 0, /* bitpos */
1110 complain_overflow_dont, /* complain_on_overflow */
1111 ppc_elf_unhandled_reloc, /* special_function */
1112 "R_PPC_GOT_DTPREL16_HA", /* name */
1113 FALSE, /* partial_inplace */
1114 0, /* src_mask */
1115 0xffff, /* dst_mask */
1116 FALSE), /* pcrel_offset */
c3668558 1117
7619e7c7
AM		 1118 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1119 offset to the entry. */
1120 HOWTO (R_PPC_GOT_TPREL16,
1121 0, /* rightshift */
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 16, /* bitsize */
1124 FALSE, /* pc_relative */
1125 0, /* bitpos */
1126 complain_overflow_signed, /* complain_on_overflow */
1127 ppc_elf_unhandled_reloc, /* special_function */
1128 "R_PPC_GOT_TPREL16", /* name */
1129 FALSE, /* partial_inplace */
1130 0, /* src_mask */
1131 0xffff, /* dst_mask */
1132 FALSE), /* pcrel_offset */
1133
1134 /* Like GOT_TPREL16, but no overflow. */
1135 HOWTO (R_PPC_GOT_TPREL16_LO,
1136 0, /* rightshift */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 16, /* bitsize */
1139 FALSE, /* pc_relative */
1140 0, /* bitpos */
1141 complain_overflow_dont, /* complain_on_overflow */
1142 ppc_elf_unhandled_reloc, /* special_function */
1143 "R_PPC_GOT_TPREL16_LO", /* name */
1144 FALSE, /* partial_inplace */
1145 0, /* src_mask */
1146 0xffff, /* dst_mask */
1147 FALSE), /* pcrel_offset */
1148
1149 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1150 HOWTO (R_PPC_GOT_TPREL16_HI,
1151 16, /* rightshift */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 16, /* bitsize */
1154 FALSE, /* pc_relative */
1155 0, /* bitpos */
1156 complain_overflow_dont, /* complain_on_overflow */
1157 ppc_elf_unhandled_reloc, /* special_function */
1158 "R_PPC_GOT_TPREL16_HI", /* name */
1159 FALSE, /* partial_inplace */
1160 0, /* src_mask */
1161 0xffff, /* dst_mask */
1162 FALSE), /* pcrel_offset */
1163
1164 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1165 HOWTO (R_PPC_GOT_TPREL16_HA,
1166 16, /* rightshift */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 16, /* bitsize */
1169 FALSE, /* pc_relative */
1170 0, /* bitpos */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 ppc_elf_unhandled_reloc, /* special_function */
1173 "R_PPC_GOT_TPREL16_HA", /* name */
1174 FALSE, /* partial_inplace */
1175 0, /* src_mask */
1176 0xffff, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1178
1179 /* The remaining relocs are from the Embedded ELF ABI, and are not
1180 in the SVR4 ELF ABI. */
1181
1182 /* 32 bit value resulting from the addend minus the symbol. */
1183 HOWTO (R_PPC_EMB_NADDR32, /* type */
1184 0, /* rightshift */
1185 2, /* size (0 = byte, 1 = short, 2 = long) */
1186 32, /* bitsize */
1187 FALSE, /* pc_relative */
1188 0, /* bitpos */
1189 complain_overflow_bitfield, /* complain_on_overflow */
1190 bfd_elf_generic_reloc, /* special_function */
1191 "R_PPC_EMB_NADDR32", /* name */
1192 FALSE, /* partial_inplace */
1193 0, /* src_mask */
1194 0xffffffff, /* dst_mask */
1195 FALSE), /* pcrel_offset */
1196
1197 /* 16 bit value resulting from the addend minus the symbol. */
1198 HOWTO (R_PPC_EMB_NADDR16, /* type */
1199 0, /* rightshift */
1200 1, /* size (0 = byte, 1 = short, 2 = long) */
1201 16, /* bitsize */
1202 FALSE, /* pc_relative */
1203 0, /* bitpos */
1204 complain_overflow_bitfield, /* complain_on_overflow */
1205 bfd_elf_generic_reloc, /* special_function */
1206 "R_PPC_EMB_NADDR16", /* name */
1207 FALSE, /* partial_inplace */
1208 0, /* src_mask */
1209 0xffff, /* dst_mask */
1210 FALSE), /* pcrel_offset */
1211
1212 /* 16 bit value resulting from the addend minus the symbol. */
1213 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1214 0, /* rightshift */
1215 1, /* size (0 = byte, 1 = short, 2 = long) */
1216 16, /* bitsize */
1217 FALSE, /* pc_relative */
1218 0, /* bitpos */
1219 complain_overflow_dont,/* complain_on_overflow */
1220 bfd_elf_generic_reloc, /* special_function */
1221 "R_PPC_EMB_ADDR16_LO", /* name */
1222 FALSE, /* partial_inplace */
1223 0, /* src_mask */
1224 0xffff, /* dst_mask */
1225 FALSE), /* pcrel_offset */
1226
1227 /* The high order 16 bits of the addend minus the symbol. */
1228 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1229 16, /* rightshift */
1230 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 16, /* bitsize */
1232 FALSE, /* pc_relative */
1233 0, /* bitpos */
1234 complain_overflow_dont, /* complain_on_overflow */
1235 bfd_elf_generic_reloc, /* special_function */
1236 "R_PPC_EMB_NADDR16_HI", /* name */
1237 FALSE, /* partial_inplace */
1238 0, /* src_mask */
1239 0xffff, /* dst_mask */
1240 FALSE), /* pcrel_offset */
1241
1242 /* The high order 16 bits of the result of the addend minus the address,
1243 plus 1 if the contents of the low 16 bits, treated as a signed number,
1244 is negative. */
1245 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1246 16, /* rightshift */
1247 1, /* size (0 = byte, 1 = short, 2 = long) */
1248 16, /* bitsize */
1249 FALSE, /* pc_relative */
1250 0, /* bitpos */
1251 complain_overflow_dont, /* complain_on_overflow */
25dbc73a
AM		 1252 ppc_elf_addr16_ha_reloc, /* special_function */
1253 "R_PPC_EMB_NADDR16_HA", /* name */
1254 FALSE, /* partial_inplace */
1255 0, /* src_mask */
1256 0xffff, /* dst_mask */
1257 FALSE), /* pcrel_offset */
1258
1259 /* 16 bit value resulting from allocating a 4 byte word to hold an
1260 address in the .sdata section, and returning the offset from
1261 _SDA_BASE_ for that relocation. */
1262 HOWTO (R_PPC_EMB_SDAI16, /* type */
1263 0, /* rightshift */
1264 1, /* size (0 = byte, 1 = short, 2 = long) */
1265 16, /* bitsize */
1266 FALSE, /* pc_relative */
1267 0, /* bitpos */
1268 complain_overflow_bitfield, /* complain_on_overflow */
1269 bfd_elf_generic_reloc, /* special_function */
1270 "R_PPC_EMB_SDAI16", /* name */
1271 FALSE, /* partial_inplace */
1272 0, /* src_mask */
1273 0xffff, /* dst_mask */
1274 FALSE), /* pcrel_offset */
1275
1276 /* 16 bit value resulting from allocating a 4 byte word to hold an
1277 address in the .sdata2 section, and returning the offset from
1278 _SDA2_BASE_ for that relocation. */
1279 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1280 0, /* rightshift */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1282 16, /* bitsize */
1283 FALSE, /* pc_relative */
1284 0, /* bitpos */
1285 complain_overflow_bitfield, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC_EMB_SDA2I16", /* name */
1288 FALSE, /* partial_inplace */
1289 0, /* src_mask */
1290 0xffff, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1292
1293 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1294 small data items. */
1295 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1296 0, /* rightshift */
1297 1, /* size (0 = byte, 1 = short, 2 = long) */
1298 16, /* bitsize */
1299 FALSE, /* pc_relative */
1300 0, /* bitpos */
1301 complain_overflow_signed, /* complain_on_overflow */
1302 bfd_elf_generic_reloc, /* special_function */
1303 "R_PPC_EMB_SDA2REL", /* name */
1304 FALSE, /* partial_inplace */
1305 0, /* src_mask */
1306 0xffff, /* dst_mask */
1307 FALSE), /* pcrel_offset */
1308
1309 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1310 signed offset from the appropriate base, and filling in the register
1311 field with the appropriate register (0, 2, or 13). */
1312 HOWTO (R_PPC_EMB_SDA21, /* type */
1313 0, /* rightshift */
1314 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 16, /* bitsize */
1316 FALSE, /* pc_relative */
1317 0, /* bitpos */
1318 complain_overflow_signed, /* complain_on_overflow */
1319 bfd_elf_generic_reloc, /* special_function */
1320 "R_PPC_EMB_SDA21", /* name */
1321 FALSE, /* partial_inplace */
1322 0, /* src_mask */
1323 0xffff, /* dst_mask */
1324 FALSE), /* pcrel_offset */
1325
1326 /* Relocation not handled: R_PPC_EMB_MRKREF */
1327 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1328 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1329 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1330 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1331 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1332
1333 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1334 in the 16 bit signed offset from the appropriate base, and filling in the
1335 register field with the appropriate register (0, 2, or 13). */
1336 HOWTO (R_PPC_EMB_RELSDA, /* type */
1337 0, /* rightshift */
1338 1, /* size (0 = byte, 1 = short, 2 = long) */
1339 16, /* bitsize */
1340 TRUE, /* pc_relative */
1341 0, /* bitpos */
1342 complain_overflow_signed, /* complain_on_overflow */
1343 bfd_elf_generic_reloc, /* special_function */
1344 "R_PPC_EMB_RELSDA", /* name */
1345 FALSE, /* partial_inplace */
1346 0, /* src_mask */
1347 0xffff, /* dst_mask */
1348 FALSE), /* pcrel_offset */
1349
d7128ce4
AM		 1350 /* A 16 bit relative relocation. */
1351 HOWTO (R_PPC_REL16, /* type */
1352 0, /* rightshift */
1353 1, /* size (0 = byte, 1 = short, 2 = long) */
1354 16, /* bitsize */
1355 TRUE, /* pc_relative */
1356 0, /* bitpos */
1357 complain_overflow_bitfield, /* complain_on_overflow */
1358 bfd_elf_generic_reloc, /* special_function */
1359 "R_PPC_REL16", /* name */
1360 FALSE, /* partial_inplace */
1361 0, /* src_mask */
1362 0xffff, /* dst_mask */
1363 TRUE), /* pcrel_offset */
1364
1365 /* A 16 bit relative relocation without overflow. */
1366 HOWTO (R_PPC_REL16_LO, /* type */
1367 0, /* rightshift */
1368 1, /* size (0 = byte, 1 = short, 2 = long) */
1369 16, /* bitsize */
1370 TRUE, /* pc_relative */
1371 0, /* bitpos */
1372 complain_overflow_dont,/* complain_on_overflow */
1373 bfd_elf_generic_reloc, /* special_function */
1374 "R_PPC_REL16_LO", /* name */
1375 FALSE, /* partial_inplace */
1376 0, /* src_mask */
1377 0xffff, /* dst_mask */
1378 TRUE), /* pcrel_offset */
1379
1380 /* The high order 16 bits of a relative address. */
1381 HOWTO (R_PPC_REL16_HI, /* type */
1382 16, /* rightshift */
1383 1, /* size (0 = byte, 1 = short, 2 = long) */
1384 16, /* bitsize */
1385 TRUE, /* pc_relative */
1386 0, /* bitpos */
1387 complain_overflow_dont, /* complain_on_overflow */
1388 bfd_elf_generic_reloc, /* special_function */
1389 "R_PPC_REL16_HI", /* name */
1390 FALSE, /* partial_inplace */
1391 0, /* src_mask */
1392 0xffff, /* dst_mask */
1393 TRUE), /* pcrel_offset */
1394
1395 /* The high order 16 bits of a relative address, plus 1 if the contents of
1396 the low 16 bits, treated as a signed number, is negative. */
1397 HOWTO (R_PPC_REL16_HA, /* type */
1398 16, /* rightshift */
1399 1, /* size (0 = byte, 1 = short, 2 = long) */
1400 16, /* bitsize */
1401 TRUE, /* pc_relative */
1402 0, /* bitpos */
1403 complain_overflow_dont, /* complain_on_overflow */
1404 ppc_elf_addr16_ha_reloc, /* special_function */
1405 "R_PPC_REL16_HA", /* name */
1406 FALSE, /* partial_inplace */
1407 0, /* src_mask */
1408 0xffff, /* dst_mask */
1409 TRUE), /* pcrel_offset */
1410
25dbc73a
AM		 1411 /* GNU extension to record C++ vtable hierarchy. */
1412 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1413 0, /* rightshift */
1414 0, /* size (0 = byte, 1 = short, 2 = long) */
1415 0, /* bitsize */
1416 FALSE, /* pc_relative */
1417 0, /* bitpos */
1418 complain_overflow_dont, /* complain_on_overflow */
1419 NULL, /* special_function */
1420 "R_PPC_GNU_VTINHERIT", /* name */
1421 FALSE, /* partial_inplace */
1422 0, /* src_mask */
1423 0, /* dst_mask */
1424 FALSE), /* pcrel_offset */
1425
1426 /* GNU extension to record C++ vtable member usage. */
1427 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1428 0, /* rightshift */
1429 0, /* size (0 = byte, 1 = short, 2 = long) */
1430 0, /* bitsize */
1431 FALSE, /* pc_relative */
1432 0, /* bitpos */
1433 complain_overflow_dont, /* complain_on_overflow */
1434 NULL, /* special_function */
1435 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM		 1436 FALSE, /* partial_inplace */
1437 0, /* src_mask */
25dbc73a 1438 0, /* dst_mask */
7619e7c7
AM		 1439 FALSE), /* pcrel_offset */
1440
25dbc73a
AM		 1441 /* Phony reloc to handle AIX style TOC entries. */
1442 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM		 1443 0, /* rightshift */
1444 1, /* size (0 = byte, 1 = short, 2 = long) */
1445 16, /* bitsize */
1446 FALSE, /* pc_relative */
1447 0, /* bitpos */
25dbc73a 1448 complain_overflow_signed, /* complain_on_overflow */
7619e7c7 1449 bfd_elf_generic_reloc, /* special_function */
25dbc73a 1450 "R_PPC_TOC16", /* name */
7619e7c7
AM		 1451 FALSE, /* partial_inplace */
1452 0, /* src_mask */
1453 0xffff, /* dst_mask */
1454 FALSE), /* pcrel_offset */
25dbc73a
AM		 1455};
1456\f
1457/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1458
1459static void
1460ppc_elf_howto_init (void)
1461{
1462 unsigned int i, type;
1463
1464 for (i = 0;
1465 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1466 i++)
1467 {
1468 type = ppc_elf_howto_raw[i].type;
1469 if (type >= (sizeof (ppc_elf_howto_table)
1470 / sizeof (ppc_elf_howto_table[0])))
1471 abort ();
1472 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1473 }
1474}
1475
1476static reloc_howto_type *
1477ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1478 bfd_reloc_code_real_type code)
1479{
1480 enum elf_ppc_reloc_type r;
1481
1482 /* Initialize howto table if not already done. */
1483 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1484 ppc_elf_howto_init ();
1485
1486 switch (code)
1487 {
1488 default:
1489 return NULL;
1490
1491 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1492 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1493 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1494 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1495 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1496 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1497 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1498 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1499 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1500 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1501 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1502 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1503 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1504 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1505 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1506 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1507 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1508 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1509 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1510 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1511 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1512 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1513 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1514 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1515 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1516 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1517 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1518 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1519 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1520 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1521 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1522 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1523 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1524 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1525 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1526 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1527 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1528 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1529 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1530 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1531 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1532 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1533 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1534 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1535 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1536 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1537 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1538 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1539 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1540 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1541 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1542 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1543 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1544 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1545 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1546 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1547 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1548 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1549 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1550 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1551 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1552 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1553 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1554 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1555 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1556 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1557 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1558 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1559 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1560 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1561 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1562 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1563 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1564 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1565 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1566 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1567 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1568 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1569 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
d7128ce4
AM		 1570 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1571 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1572 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1573 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
25dbc73a
AM		 1574 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1575 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1576 }
1577
1578 return ppc_elf_howto_table[r];
1579};
1580
1581/* Set the howto pointer for a PowerPC ELF reloc. */
1582
1583static void
1584ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1585 arelent *cache_ptr,
1586 Elf_Internal_Rela *dst)
1587{
1588 /* Initialize howto table if not already done. */
1589 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1590 ppc_elf_howto_init ();
1591
1592 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1593 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1594}
1595
d7128ce4 1596/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM		 1597
1598static bfd_reloc_status_type
1599ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1600 arelent *reloc_entry,
1601 asymbol *symbol,
1602 void *data ATTRIBUTE_UNUSED,
1603 asection *input_section,
1604 bfd *output_bfd,
1605 char **error_message ATTRIBUTE_UNUSED)
1606{
1607 bfd_vma relocation;
1608
1609 if (output_bfd != NULL)
1610 {
1611 reloc_entry->address += input_section->output_offset;
1612 return bfd_reloc_ok;
1613 }
1614
1615 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1616 return bfd_reloc_outofrange;
1617
1618 if (bfd_is_com_section (symbol->section))
1619 relocation = 0;
1620 else
1621 relocation = symbol->value;
1622
1623 relocation += symbol->section->output_section->vma;
1624 relocation += symbol->section->output_offset;
1625 relocation += reloc_entry->addend;
d7128ce4
AM		 1626 if (reloc_entry->howto->pc_relative)
1627 relocation -= reloc_entry->address;
25dbc73a
AM		 1628
1629 reloc_entry->addend += (relocation & 0x8000) << 1;
1630
1631 return bfd_reloc_continue;
1632}
1633
1634static bfd_reloc_status_type
1635ppc_elf_unhandled_reloc (bfd *abfd,
1636 arelent *reloc_entry,
1637 asymbol *symbol,
1638 void *data,
1639 asection *input_section,
1640 bfd *output_bfd,
1641 char **error_message)
1642{
1643 /* If this is a relocatable link (output_bfd test tells us), just
1644 call the generic function. Any adjustment will be done at final
1645 link time. */
1646 if (output_bfd != NULL)
1647 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1648 input_section, output_bfd, error_message);
1649
1650 if (error_message != NULL)
1651 {
1652 static char buf[60];
1653 sprintf (buf, _("generic linker can't handle %s"),
1654 reloc_entry->howto->name);
1655 *error_message = buf;
1656 }
1657 return bfd_reloc_dangerous;
1658}
1659\f
1660/* Sections created by the linker. */
1661
1662typedef struct elf_linker_section
1663{
c9a2f333 1664 /* Pointer to the bfd section. */
25dbc73a 1665 asection *section;
c9a2f333
AM		 1666 /* Section name. */
1667 const char *name;
1668 /* Associated bss section name. */
1669 const char *bss_name;
1670 /* Associated symbol name. */
1671 const char *sym_name;
046183de
AM		 1672 /* Associated symbol. */
1673 struct elf_link_hash_entry *sym;
25dbc73a
AM		 1674} elf_linker_section_t;
1675
1676/* Linked list of allocated pointer entries. This hangs off of the
1677 symbol lists, and provides allows us to return different pointers,
1678 based on different addend's. */
1679
1680typedef struct elf_linker_section_pointers
1681{
1682 /* next allocated pointer for this symbol */
1683 struct elf_linker_section_pointers *next;
1684 /* offset of pointer from beginning of section */
1685 bfd_vma offset;
1686 /* addend used */
1687 bfd_vma addend;
1688 /* which linker section this is */
1689 elf_linker_section_t *lsect;
25dbc73a
AM		 1690} elf_linker_section_pointers_t;
1691
1692struct ppc_elf_obj_tdata
1693{
1694 struct elf_obj_tdata elf;
1695
1696 /* A mapping from local symbols to offsets into the various linker
1697 sections added. This is index by the symbol index. */
1698 elf_linker_section_pointers_t **linker_section_pointers;
1699};
1700
1701#define ppc_elf_tdata(bfd) \
1702 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 1703
25dbc73a
AM		 1704#define elf_local_ptr_offsets(bfd) \
1705 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 1706
25dbc73a 1707/* Override the generic function because we store some extras. */
7619e7c7 1708
25dbc73a
AM		 1709static bfd_boolean
1710ppc_elf_mkobject (bfd *abfd)
1711{
25dbc73a 1712 if (abfd->tdata.any == NULL)
62d7a5f6
AM		 1713 {
1714 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1715 abfd->tdata.any = bfd_zalloc (abfd, amt);
1716 if (abfd->tdata.any == NULL)
1717 return FALSE;
1718 }
1719 return bfd_elf_mkobject (abfd);
25dbc73a 1720}
7619e7c7 1721
25dbc73a
AM		 1722/* Fix bad default arch selected for a 32 bit input bfd when the
1723 default is 64 bit. */
7619e7c7 1724
25dbc73a
AM		 1725static bfd_boolean
1726ppc_elf_object_p (bfd *abfd)
1727{
1728 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1729 {
1730 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 1731
25dbc73a
AM		 1732 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1733 {
1734 /* Relies on arch after 64 bit default being 32 bit default. */
1735 abfd->arch_info = abfd->arch_info->next;
1736 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1737 }
1738 }
1739 return TRUE;
1740}
7619e7c7 1741
25dbc73a 1742/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 1743
25dbc73a
AM		 1744static bfd_boolean
1745ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1746{
1747 BFD_ASSERT (!elf_flags_init (abfd)
1748 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 1749
25dbc73a
AM		 1750 elf_elfheader (abfd)->e_flags = flags;
1751 elf_flags_init (abfd) = TRUE;
1752 return TRUE;
1753}
1754
25dbc73a 1755/* Support for core dump NOTE sections. */
deaaf2f3 1756
b34976b6 1757static bfd_boolean
25dbc73a 1758ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 1759{
25dbc73a
AM		 1760 int offset;
1761 unsigned int size;
252b5132 1762
25dbc73a
AM		 1763 switch (note->descsz)
1764 {
1765 default:
1766 return FALSE;
252b5132 1767
25dbc73a
AM		 1768 case 268: /* Linux/PPC. */
1769 /* pr_cursig */
1770 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 1771
25dbc73a
AM		 1772 /* pr_pid */
1773 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 1774
25dbc73a
AM		 1775 /* pr_reg */
1776 offset = 72;
1777 size = 192;
deaaf2f3 1778
25dbc73a
AM		 1779 break;
1780 }
deaaf2f3 1781
25dbc73a
AM		 1782 /* Make a ".reg/999" section. */
1783 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1784 size, note->descpos + offset);
1785}
252b5132 1786
25dbc73a
AM		 1787static bfd_boolean
1788ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1789{
1790 switch (note->descsz)
deaaf2f3 1791 {
25dbc73a
AM		 1792 default:
1793 return FALSE;
deaaf2f3 1794
25dbc73a
AM		 1795 case 128: /* Linux/PPC elf_prpsinfo. */
1796 elf_tdata (abfd)->core_program
1797 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1798 elf_tdata (abfd)->core_command
1799 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1800 }
9abc968f 1801
25dbc73a
AM		 1802 /* Note that for some reason, a spurious space is tacked
1803 onto the end of the args in some (at least one anyway)
1804 implementations, so strip it off if it exists. */
70bccea4 1805
25dbc73a
AM		 1806 {
1807 char *command = elf_tdata (abfd)->core_command;
1808 int n = strlen (command);
70bccea4 1809
25dbc73a
AM		 1810 if (0 < n && command[n - 1] == ' ')
1811 command[n - 1] = '\0';
1812 }
deaaf2f3 1813
25dbc73a
AM		 1814 return TRUE;
1815}
deaaf2f3 1816
183e98be
AM		 1817static char *
1818ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1819{
1820 switch (note_type)
1821 {
1822 default:
1823 return NULL;
1824
1825 case NT_PRPSINFO:
1826 {
1827 char data[128];
1828 va_list ap;
1829
1830 va_start (ap, note_type);
1831 memset (data, 0, 32);
1832 strncpy (data + 32, va_arg (ap, const char *), 16);
1833 strncpy (data + 48, va_arg (ap, const char *), 80);
1834 va_end (ap);
1835 return elfcore_write_note (abfd, buf, bufsiz,
1836 "CORE", note_type, data, sizeof (data));
1837 }
1838
1839 case NT_PRSTATUS:
1840 {
1841 char data[268];
1842 va_list ap;
1843 long pid;
1844 int cursig;
1845 const void *greg;
1846
1847 va_start (ap, note_type);
1848 memset (data, 0, 72);
1849 pid = va_arg (ap, long);
1850 bfd_put_32 (abfd, pid, data + 24);
1851 cursig = va_arg (ap, int);
1852 bfd_put_16 (abfd, cursig, data + 12);
1853 greg = va_arg (ap, const void *);
1854 memcpy (data + 72, greg, 192);
1855 memset (data + 264, 0, 4);
1856 va_end (ap);
1857 return elfcore_write_note (abfd, buf, bufsiz,
1858 "CORE", note_type, data, sizeof (data));
1859 }
1860 }
1861}
1862
25dbc73a
AM		 1863/* Return address for Ith PLT stub in section PLT, for relocation REL
1864 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 1865
25dbc73a
AM		 1866static bfd_vma
1867ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1868 const asection *plt ATTRIBUTE_UNUSED,
1869 const arelent *rel)
1870{
1871 return rel->address;
1872}
deaaf2f3 1873
25dbc73a 1874/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L		 1875 is called when bfd_section_from_shdr finds a section with an unknown
1876 type. */
deaaf2f3 1877
25dbc73a 1878static bfd_boolean
6dc132d9
L		 1879ppc_elf_section_from_shdr (bfd *abfd,
1880 Elf_Internal_Shdr *hdr,
1881 const char *name,
1882 int shindex)
25dbc73a
AM		 1883{
1884 asection *newsect;
1885 flagword flags;
d1c6de6f 1886
6dc132d9 1887 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 1888 return FALSE;
deaaf2f3 1889
25dbc73a
AM		 1890 newsect = hdr->bfd_section;
1891 flags = bfd_get_section_flags (abfd, newsect);
1892 if (hdr->sh_flags & SHF_EXCLUDE)
1893 flags |= SEC_EXCLUDE;
9abc968f 1894
25dbc73a
AM		 1895 if (hdr->sh_type == SHT_ORDERED)
1896 flags |= SEC_SORT_ENTRIES;
d1c6de6f 1897
25dbc73a
AM		 1898 bfd_set_section_flags (abfd, newsect, flags);
1899 return TRUE;
1900}
1901
1902/* Set up any other section flags and such that may be necessary. */
1903
1904static bfd_boolean
1905ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1906 Elf_Internal_Shdr *shdr,
1907 asection *asect)
1908{
d30e8e7c 1909 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
25dbc73a
AM		 1910 shdr->sh_flags |= SHF_EXCLUDE;
1911
1912 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1913 shdr->sh_type = SHT_ORDERED;
1914
1915 return TRUE;
1916}
1917
1918/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1919 need to bump up the number of section headers. */
1920
1921static int
a6b96beb
AM		 1922ppc_elf_additional_program_headers (bfd *abfd,
1923 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM		 1924{
1925 asection *s;
1926 int ret = 0;
d1c6de6f 1927
25dbc73a
AM		 1928 s = bfd_get_section_by_name (abfd, ".sbss2");
1929 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1930 ++ret;
d1c6de6f 1931
25dbc73a
AM		 1932 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1933 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1934 ++ret;
deaaf2f3 1935
25dbc73a
AM		 1936 return ret;
1937}
deaaf2f3 1938
25dbc73a
AM		 1939/* Add extra PPC sections -- Note, for now, make .sbss2 and
1940 .PPC.EMB.sbss0 a normal section, and not a bss section so
1941 that the linker doesn't crater when trying to make more than
1942 2 sections. */
e656e369 1943
b35d266b 1944static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 1945{
0112cd26
NC		 1946 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1947 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1948 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1949 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1950 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1951 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1952 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
1953 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1954 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1955 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 1956};
1957
551b43fd
AM		 1958/* This is what we want for new plt/got. */
1959static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 1960 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM		 1961
1962static const struct bfd_elf_special_section *
1963ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 1964{
b35d266b 1965 const struct bfd_elf_special_section *ssect;
551b43fd
AM		 1966
1967 /* See if this is one of the special sections. */
1968 if (sec->name == NULL)
1969 return NULL;
1970
1971 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
1972 sec->use_rela_p);
1973 if (ssect != NULL)
1974 {
1975 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
1976 ssect = &ppc_alt_plt;
1977 return ssect;
1978 }
1979
1980 return _bfd_elf_get_sec_type_attr (abfd, sec);
1981}
25dbc73a
AM		 1982\f
1983/* Very simple linked list structure for recording apuinfo values. */
1984typedef struct apuinfo_list
1985{
1986 struct apuinfo_list *next;
1987 unsigned long value;
1988}
1989apuinfo_list;
e656e369 1990
25dbc73a 1991static apuinfo_list *head;
deaaf2f3 1992
deaaf2f3 1993
25dbc73a
AM		 1994static void
1995apuinfo_list_init (void)
1996{
1997 head = NULL;
1998}
9abc968f 1999
25dbc73a
AM		 2000static void
2001apuinfo_list_add (unsigned long value)
2002{
2003 apuinfo_list *entry = head;
deaaf2f3 2004
25dbc73a
AM		 2005 while (entry != NULL)
2006 {
2007 if (entry->value == value)
2008 return;
2009 entry = entry->next;
2010 }
b4a38de6 2011
25dbc73a
AM		 2012 entry = bfd_malloc (sizeof (* entry));
2013 if (entry == NULL)
2014 return;
e656e369 2015
25dbc73a
AM		 2016 entry->value = value;
2017 entry->next = head;
2018 head = entry;
2019}
9abc968f 2020
25dbc73a
AM		 2021static unsigned
2022apuinfo_list_length (void)
2023{
2024 apuinfo_list *entry;
2025 unsigned long count;
9abc968f 2026
25dbc73a
AM		 2027 for (entry = head, count = 0;
2028 entry;
2029 entry = entry->next)
2030 ++ count;
e656e369 2031
25dbc73a
AM		 2032 return count;
2033}
eea6121a 2034
25dbc73a
AM		 2035static inline unsigned long
2036apuinfo_list_element (unsigned long number)
2037{
2038 apuinfo_list * entry;
e656e369 2039
25dbc73a
AM		 2040 for (entry = head;
2041 entry && number --;
2042 entry = entry->next)
2043 ;
252b5132 2044
25dbc73a
AM		 2045 return entry ? entry->value : 0;
2046}
2047
2048static void
2049apuinfo_list_finish (void)
2050{
2051 apuinfo_list *entry;
2052
2053 for (entry = head; entry;)
252b5132 2054 {
25dbc73a
AM		 2055 apuinfo_list *next = entry->next;
2056 free (entry);
2057 entry = next;
2058 }
9abc968f 2059
25dbc73a
AM		 2060 head = NULL;
2061}
9abc968f 2062
25dbc73a
AM		 2063#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2064#define APUINFO_LABEL "APUinfo"
9abc968f 2065
25dbc73a
AM		 2066/* Scan the input BFDs and create a linked list of
2067 the APUinfo values that will need to be emitted. */
9abc968f 2068
25dbc73a
AM		 2069static void
2070ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2071{
2072 bfd *ibfd;
2073 asection *asec;
2074 char *buffer;
2075 unsigned num_input_sections;
2076 bfd_size_type output_section_size;
2077 unsigned i;
2078 unsigned num_entries;
2079 unsigned long offset;
2080 unsigned long length;
2081 const char *error_message = NULL;
9abc968f 2082
25dbc73a
AM		 2083 if (link_info == NULL)
2084 return;
9abc968f 2085
25dbc73a
AM		 2086 /* Scan the input bfds, looking for apuinfo sections. */
2087 num_input_sections = 0;
2088 output_section_size = 0;
252b5132 2089
25dbc73a 2090 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2091 {
25dbc73a
AM		 2092 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2093 if (asec)
252b5132 2094 {
25dbc73a
AM		 2095 ++ num_input_sections;
2096 output_section_size += asec->size;
252b5132 2097 }
252b5132
RH		 2098 }
2099
25dbc73a
AM		 2100 /* We need at least one input sections
2101 in order to make merging worthwhile. */
2102 if (num_input_sections < 1)
2103 return;
deaaf2f3 2104
25dbc73a
AM		 2105 /* Just make sure that the output section exists as well. */
2106 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2107 if (asec == NULL)
2108 return;
252b5132 2109
25dbc73a
AM		 2110 /* Allocate a buffer for the contents of the input sections. */
2111 buffer = bfd_malloc (output_section_size);
2112 if (buffer == NULL)
2113 return;
252b5132 2114
25dbc73a
AM		 2115 offset = 0;
2116 apuinfo_list_init ();
252b5132 2117
25dbc73a
AM		 2118 /* Read in the input sections contents. */
2119 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2120 {
25dbc73a
AM		 2121 unsigned long datum;
2122 char *ptr;
252b5132 2123
25dbc73a
AM		 2124 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2125 if (asec == NULL)
2126 continue;
252b5132 2127
25dbc73a
AM		 2128 length = asec->size;
2129 if (length < 24)
2130 {
2131 error_message = _("corrupt or empty %s section in %B");
2132 goto fail;
2133 }
252b5132 2134
25dbc73a
AM		 2135 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2136 || (bfd_bread (buffer + offset, length, ibfd) != length))
2137 {
2138 error_message = _("unable to read in %s section from %B");
2139 goto fail;
2140 }
252b5132 2141
25dbc73a
AM		 2142 /* Process the contents of the section. */
2143 ptr = buffer + offset;
2144 error_message = _("corrupt %s section in %B");
252b5132 2145
25dbc73a
AM		 2146 /* Verify the contents of the header. Note - we have to
2147 extract the values this way in order to allow for a
2148 host whose endian-ness is different from the target. */
2149 datum = bfd_get_32 (ibfd, ptr);
2150 if (datum != sizeof APUINFO_LABEL)
2151 goto fail;
252b5132 2152
25dbc73a
AM		 2153 datum = bfd_get_32 (ibfd, ptr + 8);
2154 if (datum != 0x2)
2155 goto fail;
252b5132 2156
25dbc73a
AM		 2157 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2158 goto fail;
252b5132 2159
25dbc73a
AM		 2160 /* Get the number of bytes used for apuinfo entries. */
2161 datum = bfd_get_32 (ibfd, ptr + 4);
2162 if (datum + 20 != length)
2163 goto fail;
2164
2165 /* Make sure that we do not run off the end of the section. */
2166 if (offset + length > output_section_size)
2167 goto fail;
2168
2169 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2170 for (i = 0; i < datum; i += 4)
2171 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2172
2173 /* Update the offset. */
2174 offset += length;
252b5132
RH		 2175 }
2176
25dbc73a 2177 error_message = NULL;
252b5132 2178
25dbc73a
AM		 2179 /* Compute the size of the output section. */
2180 num_entries = apuinfo_list_length ();
2181 output_section_size = 20 + num_entries * 4;
252b5132 2182
25dbc73a
AM		 2183 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2184
2185 if (! bfd_set_section_size (abfd, asec, output_section_size))
2186 ibfd = abfd,
2187 error_message = _("warning: unable to set size of %s section in %B");
2188
2189 fail:
2190 free (buffer);
2191
2192 if (error_message)
2193 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2194}
252b5132 2195
25dbc73a
AM		 2196/* Prevent the output section from accumulating the input sections'
2197 contents. We have already stored this in our linked list structure. */
252b5132 2198
25dbc73a
AM		 2199static bfd_boolean
2200ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2201 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM		 2202 asection *asec,
2203 bfd_byte *contents ATTRIBUTE_UNUSED)
2204{
2205 return (apuinfo_list_length ()
2206 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
252b5132
RH		 2207}
2208
25dbc73a
AM		 2209/* Finally we can generate the output section. */
2210
2211static void
2212ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2213{
25dbc73a
AM		 2214 bfd_byte *buffer;
2215 asection *asec;
2216 unsigned i;
2217 unsigned num_entries;
2218 bfd_size_type length;
7619e7c7 2219
25dbc73a
AM		 2220 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2221 if (asec == NULL)
2222 return;
2223
2224 if (apuinfo_list_length () == 0)
2225 return;
2226
2227 length = asec->size;
2228 if (length < 20)
2229 return;
2230
2231 buffer = bfd_malloc (length);
2232 if (buffer == NULL)
7619e7c7 2233 {
25dbc73a
AM		 2234 (*_bfd_error_handler)
2235 (_("failed to allocate space for new APUinfo section."));
2236 return;
7619e7c7 2237 }
7619e7c7 2238
25dbc73a
AM		 2239 /* Create the apuinfo header. */
2240 num_entries = apuinfo_list_length ();
2241 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2242 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2243 bfd_put_32 (abfd, 0x2, buffer + 8);
2244 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2245
25dbc73a
AM		 2246 length = 20;
2247 for (i = 0; i < num_entries; i++)
feee612b 2248 {
25dbc73a
AM		 2249 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2250 length += 4;
feee612b 2251 }
feee612b 2252
25dbc73a
AM		 2253 if (length != asec->size)
2254 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2255
25dbc73a
AM		 2256 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2257 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2258
25dbc73a
AM		 2259 free (buffer);
2260
2261 apuinfo_list_finish ();
252b5132 2262}
25dbc73a
AM		 2263\f
2264/* The following functions are specific to the ELF linker, while
2265 functions above are used generally. They appear in this file more
2266 or less in the order in which they are called. eg.
2267 ppc_elf_check_relocs is called early in the link process,
2268 ppc_elf_finish_dynamic_sections is one of the last functions
2269 called. */
252b5132 2270
25dbc73a
AM		 2271/* The PPC linker needs to keep track of the number of relocs that it
2272 decides to copy as dynamic relocs in check_relocs for each symbol.
2273 This is so that it can later discard them if they are found to be
2274 unnecessary. We store the information in a field extending the
2275 regular ELF linker hash table. */
ae9a127f 2276
25dbc73a 2277struct ppc_elf_dyn_relocs
252b5132 2278{
25dbc73a 2279 struct ppc_elf_dyn_relocs *next;
252b5132 2280
25dbc73a
AM		 2281 /* The input section of the reloc. */
2282 asection *sec;
252b5132 2283
25dbc73a
AM		 2284 /* Total number of relocs copied for the input section. */
2285 bfd_size_type count;
252b5132 2286
25dbc73a
AM		 2287 /* Number of pc-relative relocs copied for the input section. */
2288 bfd_size_type pc_count;
2289};
252b5132 2290
a6aa5195
AM		 2291/* Track PLT entries needed for a given symbol. We might need more
2292 than one glink entry per symbol. */
2293struct plt_entry
2294{
2295 struct plt_entry *next;
2296
2297 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2298 This field stores the offset into .got2 used to initialise the
2299 GOT pointer reg. It will always be at least 32768 (and for
2300 current gcc this is the only offset used). */
2301 bfd_vma addend;
2302
2303 /* The .got2 section. */
2304 asection *sec;
2305
2306 /* PLT refcount or offset. */
2307 union
2308 {
2309 bfd_signed_vma refcount;
2310 bfd_vma offset;
2311 } plt;
2312
2313 /* .glink stub offset. */
2314 bfd_vma glink_offset;
2315};
2316
25dbc73a
AM		 2317/* Of those relocs that might be copied as dynamic relocs, this macro
2318 selects those that must be copied when linking a shared library,
2319 even when the symbol is local. */
252b5132 2320
25dbc73a
AM		 2321#define MUST_BE_DYN_RELOC(RTYPE) \
2322 ((RTYPE) != R_PPC_REL24 \
2323 && (RTYPE) != R_PPC_REL14 \
2324 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2325 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2326 && (RTYPE) != R_PPC_REL32)
252b5132 2327
25dbc73a
AM		 2328/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2329 copying dynamic variables from a shared lib into an app's dynbss
2330 section, and instead use a dynamic relocation to point into the
2331 shared lib. */
2332#define ELIMINATE_COPY_RELOCS 1
252b5132 2333
25dbc73a 2334/* PPC ELF linker hash entry. */
252b5132 2335
25dbc73a
AM		 2336struct ppc_elf_link_hash_entry
2337{
2338 struct elf_link_hash_entry elf;
252b5132 2339
25dbc73a
AM		 2340 /* If this symbol is used in the linker created sections, the processor
2341 specific backend uses this field to map the field into the offset
2342 from the beginning of the section. */
2343 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 2344
25dbc73a
AM		 2345 /* Track dynamic relocs copied for this symbol. */
2346 struct ppc_elf_dyn_relocs *dyn_relocs;
252b5132 2347
25dbc73a
AM		 2348 /* Contexts in which symbol is used in the GOT (or TOC).
2349 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2350 corresponding relocs are encountered during check_relocs.
2351 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2352 indicate the corresponding GOT entry type is not needed. */
2353#define TLS_GD 1 /* GD reloc. */
2354#define TLS_LD 2 /* LD reloc. */
2355#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2356#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2357#define TLS_TLS 16 /* Any TLS reloc. */
2358#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2359 char tls_mask;
4dc4a9a5
DJ		 2360
2361 /* Nonzero if we have seen a small data relocation referring to this
2362 symbol. */
2363 unsigned char has_sda_refs;
25dbc73a 2364};
252b5132 2365
25dbc73a
AM		 2366#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2367
4a3dc543
RS		 2368enum ppc_elf_plt_type {
2369 PLT_UNSET,
2370 PLT_OLD,
2371 PLT_NEW,
2372 PLT_VXWORKS
2373};
2374
25dbc73a
AM		 2375/* PPC ELF linker hash table. */
2376
2377struct ppc_elf_link_hash_table
2378{
2379 struct elf_link_hash_table elf;
2380
2381 /* Short-cuts to get to dynamic linker sections. */
2382 asection *got;
2383 asection *relgot;
d7128ce4 2384 asection *glink;
25dbc73a
AM		 2385 asection *plt;
2386 asection *relplt;
2387 asection *dynbss;
2388 asection *relbss;
2389 asection *dynsbss;
2390 asection *relsbss;
c9a2f333 2391 elf_linker_section_t sdata[2];
25dbc73a
AM		 2392 asection *sbss;
2393
2394 /* Shortcut to .__tls_get_addr. */
2395 struct elf_link_hash_entry *tls_get_addr;
252b5132 2396
25dbc73a
AM		 2397 /* TLS local dynamic got entry handling. */
2398 union {
2399 bfd_signed_vma refcount;
2400 bfd_vma offset;
2401 } tlsld_got;
252b5132 2402
d7128ce4
AM		 2403 /* Offset of PltResolve function in glink. */
2404 bfd_vma glink_pltresolve;
2405
3b36f7e6
AM		 2406 /* Size of reserved GOT entries. */
2407 unsigned int got_header_size;
2408 /* Non-zero if allocating the header left a gap. */
2409 unsigned int got_gap;
2410
4a3dc543
RS		 2411 /* The type of PLT we have chosen to use. */
2412 enum ppc_elf_plt_type plt_type;
2413
2414 /* Whether we can use the new PLT layout. */
2415 unsigned int can_use_new_plt:1;
d7128ce4 2416
0ba07910
AM		 2417 /* Set if we should emit symbols for stubs. */
2418 unsigned int emit_stub_syms:1;
2419
25dbc73a
AM		 2420 /* Small local sym to section mapping cache. */
2421 struct sym_sec_cache sym_sec;
9d8504b1
PB		 2422
2423 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2424 asection *srelplt2;
2425
2426 /* The .got.plt section (VxWorks only)*/
2427 asection *sgotplt;
2428
9d8504b1
PB		 2429 /* True if the target system is VxWorks. */
2430 int is_vxworks;
2431
2432 /* The size of PLT entries. */
2433 int plt_entry_size;
2434 /* The distance between adjacent PLT slots. */
2435 int plt_slot_size;
2436 /* The size of the first PLT entry. */
2437 int plt_initial_entry_size;
25dbc73a 2438};
252b5132 2439
25dbc73a 2440/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 2441
25dbc73a
AM		 2442#define ppc_elf_hash_table(p) \
2443 ((struct ppc_elf_link_hash_table *) (p)->hash)
252b5132 2444
25dbc73a 2445/* Create an entry in a PPC ELF linker hash table. */
252b5132 2446
25dbc73a
AM		 2447static struct bfd_hash_entry *
2448ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2449 struct bfd_hash_table *table,
2450 const char *string)
252b5132 2451{
25dbc73a
AM		 2452 /* Allocate the structure if it has not already been allocated by a
2453 subclass. */
2454 if (entry == NULL)
2455 {
2456 entry = bfd_hash_allocate (table,
2457 sizeof (struct ppc_elf_link_hash_entry));
2458 if (entry == NULL)
2459 return entry;
2460 }
252b5132 2461
25dbc73a
AM		 2462 /* Call the allocation method of the superclass. */
2463 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2464 if (entry != NULL)
2465 {
2466 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2467 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2468 ppc_elf_hash_entry (entry)->tls_mask = 0;
2469 }
252b5132 2470
25dbc73a 2471 return entry;
252b5132 2472}
3dab13f6 2473
25dbc73a 2474/* Create a PPC ELF linker hash table. */
3dab13f6 2475
25dbc73a
AM		 2476static struct bfd_link_hash_table *
2477ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 2478{
25dbc73a 2479 struct ppc_elf_link_hash_table *ret;
3dab13f6 2480
25dbc73a
AM		 2481 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2482 if (ret == NULL)
2483 return NULL;
3dab13f6 2484
66eb6687
AM		 2485 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2486 ppc_elf_link_hash_newfunc,
2487 sizeof (struct ppc_elf_link_hash_entry)))
3dab13f6 2488 {
25dbc73a
AM		 2489 free (ret);
2490 return NULL;
2491 }
58111eb7 2492
a6aa5195
AM		 2493 ret->elf.init_plt_refcount.refcount = 0;
2494 ret->elf.init_plt_refcount.glist = NULL;
2495 ret->elf.init_plt_offset.offset = 0;
2496 ret->elf.init_plt_offset.glist = NULL;
2497
c9a2f333
AM		 2498 ret->sdata[0].name = ".sdata";
2499 ret->sdata[0].sym_name = "_SDA_BASE_";
2500 ret->sdata[0].bss_name = ".sbss";
2501
2502 ret->sdata[1].name = ".sdata2";
2503 ret->sdata[1].sym_name = "_SDA2_BASE_";
2504 ret->sdata[1].bss_name = ".sbss2";
2505
9d8504b1
PB		 2506 ret->plt_entry_size = 12;
2507 ret->plt_slot_size = 8;
2508 ret->plt_initial_entry_size = 72;
2509
2510 ret->is_vxworks = 0;
2511
25dbc73a
AM		 2512 return &ret->elf.root;
2513}
3dab13f6 2514
9d8504b1 2515/* Create .got and the related sections. */
3dab13f6 2516
25dbc73a
AM		 2517static bfd_boolean
2518ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2519{
2520 struct ppc_elf_link_hash_table *htab;
2521 asection *s;
2522 flagword flags;
3dab13f6 2523
25dbc73a
AM		 2524 if (!_bfd_elf_create_got_section (abfd, info))
2525 return FALSE;
3dab13f6 2526
25dbc73a
AM		 2527 htab = ppc_elf_hash_table (info);
2528 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2529 if (s == NULL)
2530 abort ();
3dab13f6 2531
9d8504b1
PB		 2532 if (htab->is_vxworks)
2533 {
2534 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2535 if (!htab->sgotplt)
2536 abort ();
2537 }
2538 else
2539 {
2540 /* The powerpc .got has a blrl instruction in it. Mark it
2541 executable. */
2542 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2543 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2544 if (!bfd_set_section_flags (abfd, s, flags))
2545 return FALSE;
2546 }
3dab13f6 2547
3b36f7e6
AM		 2548 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2549 | SEC_LINKER_CREATED | SEC_READONLY);
2550 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
25dbc73a 2551 if (!htab->relgot
25dbc73a
AM		 2552 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2553 return FALSE;
3dab13f6 2554
25dbc73a
AM		 2555 return TRUE;
2556}
3dab13f6 2557
25dbc73a
AM		 2558/* We have to create .dynsbss and .rela.sbss here so that they get mapped
2559 to output sections (just like _bfd_elf_create_dynamic_sections has
2560 to create .dynbss and .rela.bss). */
3dab13f6 2561
25dbc73a
AM		 2562static bfd_boolean
2563ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2564{
2565 struct ppc_elf_link_hash_table *htab;
2566 asection *s;
2567 flagword flags;
3dab13f6 2568
25dbc73a 2569 htab = ppc_elf_hash_table (info);
3dab13f6 2570
25dbc73a
AM		 2571 if (htab->got == NULL
2572 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM		 2573 return FALSE;
2574
25dbc73a
AM		 2575 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2576 return FALSE;
3dab13f6 2577
d7128ce4
AM		 2578 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2579 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2580
2581 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2582 htab->glink = s;
2583 if (s == NULL
2584 || !bfd_set_section_alignment (abfd, s, 4))
2585 return FALSE;
3dab13f6 2586
25dbc73a 2587 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
3b36f7e6
AM		 2588 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2589 SEC_ALLOC | SEC_LINKER_CREATED);
2590 htab->dynsbss = s;
3496cb2a 2591 if (s == NULL)
25dbc73a 2592 return FALSE;
3dab13f6 2593
25dbc73a
AM		 2594 if (! info->shared)
2595 {
2596 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
d7128ce4 2597 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 2598 htab->relsbss = s;
25dbc73a 2599 if (s == NULL
25dbc73a
AM		 2600 || ! bfd_set_section_alignment (abfd, s, 2))
2601 return FALSE;
2602 }
3dab13f6 2603
711de32c
RS		 2604 if (htab->is_vxworks
2605 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2606 return FALSE;
9d8504b1 2607
25dbc73a
AM		 2608 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2609 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2610 if (s == NULL)
2611 abort ();
3dab13f6 2612
3b36f7e6 2613 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS		 2614 if (htab->plt_type == PLT_VXWORKS)
2615 /* The VxWorks PLT is a loaded section with contents. */
2616 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM		 2617 return bfd_set_section_flags (abfd, s, flags);
2618}
3dab13f6 2619
25dbc73a 2620/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 2621
25dbc73a 2622static void
fcfa13d2 2623ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM		 2624 struct elf_link_hash_entry *dir,
2625 struct elf_link_hash_entry *ind)
2626{
2627 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 2628
25dbc73a
AM		 2629 edir = (struct ppc_elf_link_hash_entry *) dir;
2630 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 2631
25dbc73a
AM		 2632 if (eind->dyn_relocs != NULL)
2633 {
2634 if (edir->dyn_relocs != NULL)
3dab13f6 2635 {
25dbc73a
AM		 2636 struct ppc_elf_dyn_relocs **pp;
2637 struct ppc_elf_dyn_relocs *p;
3dab13f6 2638
fcfa13d2 2639 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM		 2640 list. Merge any entries against the same section. */
2641 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 2642 {
25dbc73a
AM		 2643 struct ppc_elf_dyn_relocs *q;
2644
2645 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2646 if (q->sec == p->sec)
2647 {
2648 q->pc_count += p->pc_count;
2649 q->count += p->count;
2650 *pp = p->next;
2651 break;
2652 }
2653 if (q == NULL)
2654 pp = &p->next;
3dab13f6 2655 }
25dbc73a 2656 *pp = edir->dyn_relocs;
3dab13f6 2657 }
25dbc73a
AM		 2658
2659 edir->dyn_relocs = eind->dyn_relocs;
2660 eind->dyn_relocs = NULL;
3dab13f6 2661 }
3dab13f6 2662
25dbc73a 2663 edir->tls_mask |= eind->tls_mask;
4dc4a9a5 2664 edir->has_sda_refs |= eind->has_sda_refs;
3dab13f6 2665
a6aa5195
AM		 2666 /* If called to transfer flags for a weakdef during processing
2667 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2668 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2669 if (!(ELIMINATE_COPY_RELOCS
2670 && eind->elf.root.type != bfd_link_hash_indirect
2671 && edir->elf.dynamic_adjusted))
2672 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2673
2674 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2675 edir->elf.ref_regular |= eind->elf.ref_regular;
2676 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2677 edir->elf.needs_plt |= eind->elf.needs_plt;
2678
2679 /* If we were called to copy over info for a weak sym, that's all. */
2680 if (eind->elf.root.type != bfd_link_hash_indirect)
2681 return;
2682
2683 /* Copy over the GOT refcount entries that we may have already seen to
2684 the symbol which just became indirect. */
fcfa13d2
AM		 2685 edir->elf.got.refcount += eind->elf.got.refcount;
2686 eind->elf.got.refcount = 0;
a6aa5195
AM		 2687
2688 /* And plt entries. */
2689 if (eind->elf.plt.plist != NULL)
2690 {
2691 if (edir->elf.plt.plist != NULL)
2692 {
2693 struct plt_entry **entp;
2694 struct plt_entry *ent;
2695
2696 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2697 {
2698 struct plt_entry *dent;
2699
2700 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2701 if (dent->sec == ent->sec && dent->addend == ent->addend)
2702 {
2703 dent->plt.refcount += ent->plt.refcount;
2704 *entp = ent->next;
2705 break;
2706 }
2707 if (dent == NULL)
2708 entp = &ent->next;
2709 }
2710 *entp = edir->elf.plt.plist;
2711 }
2712
2713 edir->elf.plt.plist = eind->elf.plt.plist;
2714 eind->elf.plt.plist = NULL;
2715 }
2716
fcfa13d2 2717 if (eind->elf.dynindx != -1)
25dbc73a 2718 {
fcfa13d2
AM		 2719 if (edir->elf.dynindx != -1)
2720 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2721 edir->elf.dynstr_index);
a6aa5195
AM		 2722 edir->elf.dynindx = eind->elf.dynindx;
2723 edir->elf.dynstr_index = eind->elf.dynstr_index;
2724 eind->elf.dynindx = -1;
2725 eind->elf.dynstr_index = 0;
25dbc73a 2726 }
25dbc73a 2727}
3dab13f6 2728
8853c3d3
AM		 2729/* Return 1 if target is one of ours. */
2730
2731static bfd_boolean
2732is_ppc_elf_target (const struct bfd_target *targ)
2733{
2734 extern const bfd_target bfd_elf32_powerpc_vec;
7c492719 2735 extern const bfd_target bfd_elf32_powerpc_vxworks_vec;
8853c3d3
AM		 2736 extern const bfd_target bfd_elf32_powerpcle_vec;
2737
7c492719
RS		 2738 return (targ == &bfd_elf32_powerpc_vec
2739 || targ == &bfd_elf32_powerpc_vxworks_vec
2740 || targ == &bfd_elf32_powerpcle_vec);
8853c3d3
AM		 2741}
2742
25dbc73a
AM		 2743/* Hook called by the linker routine which adds symbols from an object
2744 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 2745
25dbc73a
AM		 2746static bfd_boolean
2747ppc_elf_add_symbol_hook (bfd *abfd,
2748 struct bfd_link_info *info,
2749 Elf_Internal_Sym *sym,
2750 const char **namep ATTRIBUTE_UNUSED,
2751 flagword *flagsp ATTRIBUTE_UNUSED,
2752 asection **secp,
2753 bfd_vma *valp)
2754{
2755 if (sym->st_shndx == SHN_COMMON
2756 && !info->relocatable
2757 && sym->st_size <= elf_gp_size (abfd)
d2663f46 2758 && is_ppc_elf_target (info->hash->creator))
25dbc73a
AM		 2759 {
2760 /* Common symbols less than or equal to -G nn bytes are automatically
2761 put into .sbss. */
2762 struct ppc_elf_link_hash_table *htab;
3dab13f6 2763
25dbc73a
AM		 2764 htab = ppc_elf_hash_table (info);
2765 if (htab->sbss == NULL)
2766 {
644285ef 2767 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 2768
644285ef
AM		 2769 if (!htab->elf.dynobj)
2770 htab->elf.dynobj = abfd;
2771
3496cb2a
L		 2772 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2773 ".sbss",
2774 flags);
2775 if (htab->sbss == NULL)
25dbc73a 2776 return FALSE;
3dab13f6 2777 }
3dab13f6 2778
25dbc73a
AM		 2779 *secp = htab->sbss;
2780 *valp = sym->st_size;
2781 }
3dab13f6 2782
25dbc73a 2783 return TRUE;
3dab13f6
AM		 2784}
2785\f
046183de
AM		 2786static bfd_boolean
2787create_sdata_sym (struct ppc_elf_link_hash_table *htab,
2788 elf_linker_section_t *lsect)
2789{
2790 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
2791 TRUE, FALSE, TRUE);
2792 if (lsect->sym == NULL)
2793 return FALSE;
2794 if (lsect->sym->root.type == bfd_link_hash_new)
2795 lsect->sym->non_elf = 0;
2796 lsect->sym->ref_regular = 1;
2797 return TRUE;
2798}
2799
c9a2f333 2800/* Create a special linker section. */
25dbc73a 2801
c9a2f333 2802static bfd_boolean
55fd94b0
AM		 2803ppc_elf_create_linker_section (bfd *abfd,
2804 struct bfd_link_info *info,
c9a2f333
AM		 2805 flagword flags,
2806 elf_linker_section_t *lsect)
252b5132 2807{
58111eb7 2808 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 2809 asection *s;
58111eb7 2810
c9a2f333
AM		 2811 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2812 | SEC_LINKER_CREATED);
58111eb7
AM		 2813
2814 /* Record the first bfd that needs the special sections. */
2815 if (!htab->elf.dynobj)
2816 htab->elf.dynobj = abfd;
2817
3496cb2a
L		 2818 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2819 lsect->name,
2820 flags);
76750a2f 2821 if (s == NULL
76750a2f 2822 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 2823 return FALSE;
76750a2f 2824 lsect->section = s;
58111eb7 2825
046183de 2826 return create_sdata_sym (htab, lsect);
252b5132 2827}
252b5132 2828
25dbc73a
AM		 2829/* Find a linker generated pointer with a given addend and type. */
2830
2831static elf_linker_section_pointers_t *
2832elf_find_pointer_linker_section
2833 (elf_linker_section_pointers_t *linker_pointers,
2834 bfd_vma addend,
2835 elf_linker_section_t *lsect)
252b5132 2836{
25dbc73a
AM		 2837 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2838 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2839 return linker_pointers;
252b5132 2840
25dbc73a
AM		 2841 return NULL;
2842}
2843
2844/* Allocate a pointer to live in a linker created section. */
2845
2846static bfd_boolean
2847elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM		 2848 elf_linker_section_t *lsect,
2849 struct elf_link_hash_entry *h,
2850 const Elf_Internal_Rela *rel)
2851{
2852 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2853 elf_linker_section_pointers_t *linker_section_ptr;
2854 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2855 bfd_size_type amt;
2856
2857 BFD_ASSERT (lsect != NULL);
2858
2859 /* Is this a global symbol? */
2860 if (h != NULL)
2861 {
2862 struct ppc_elf_link_hash_entry *eh;
2863
2864 /* Has this symbol already been allocated? If so, our work is done. */
2865 eh = (struct ppc_elf_link_hash_entry *) h;
2866 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2867 rel->r_addend,
2868 lsect))
2869 return TRUE;
2870
2871 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM		 2872 }
2873 else
2874 {
2875 /* Allocation of a pointer to a local symbol. */
2876 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2877
2878 /* Allocate a table to hold the local symbols if first time. */
2879 if (!ptr)
2880 {
2881 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2882
2883 amt = num_symbols;
2884 amt *= sizeof (elf_linker_section_pointers_t *);
2885 ptr = bfd_zalloc (abfd, amt);
2886
2887 if (!ptr)
2888 return FALSE;
2889
2890 elf_local_ptr_offsets (abfd) = ptr;
2891 }
2892
2893 /* Has this symbol already been allocated? If so, our work is done. */
2894 if (elf_find_pointer_linker_section (ptr[r_symndx],
2895 rel->r_addend,
2896 lsect))
2897 return TRUE;
252b5132 2898
25dbc73a 2899 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 2900 }
41fcb14e 2901
25dbc73a
AM		 2902 /* Allocate space for a pointer in the linker section, and allocate
2903 a new pointer record from internal memory. */
2904 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2905 amt = sizeof (elf_linker_section_pointers_t);
2906 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 2907
25dbc73a 2908 if (!linker_section_ptr)
7619e7c7 2909 return FALSE;
41fcb14e 2910
25dbc73a
AM		 2911 linker_section_ptr->next = *ptr_linker_section_ptr;
2912 linker_section_ptr->addend = rel->r_addend;
2913 linker_section_ptr->lsect = lsect;
25dbc73a 2914 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 2915
25dbc73a
AM		 2916 linker_section_ptr->offset = lsect->section->size;
2917 lsect->section->size += 4;
7619e7c7 2918
25dbc73a
AM		 2919#ifdef DEBUG
2920 fprintf (stderr,
2921 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2922 lsect->name, (long) linker_section_ptr->offset,
2923 (long) lsect->section->size);
2924#endif
7619e7c7
AM		 2925
2926 return TRUE;
41fcb14e
AM		 2927}
2928
b34976b6 2929static bfd_boolean
25dbc73a
AM		 2930update_local_sym_info (bfd *abfd,
2931 Elf_Internal_Shdr *symtab_hdr,
2932 unsigned long r_symndx,
2933 int tls_type)
252b5132 2934{
25dbc73a
AM		 2935 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2936 char *local_got_tls_masks;
252b5132 2937
25dbc73a 2938 if (local_got_refcounts == NULL)
252b5132 2939 {
25dbc73a
AM		 2940 bfd_size_type size = symtab_hdr->sh_info;
2941
2942 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2943 local_got_refcounts = bfd_zalloc (abfd, size);
2944 if (local_got_refcounts == NULL)
b34976b6 2945 return FALSE;
25dbc73a 2946 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 2947 }
41fcb14e 2948
25dbc73a
AM		 2949 local_got_refcounts[r_symndx] += 1;
2950 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2951 local_got_tls_masks[r_symndx] |= tls_type;
2952 return TRUE;
2953}
41fcb14e 2954
a6aa5195
AM		 2955static bfd_boolean
2956update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2957 asection *sec, bfd_vma addend)
2958{
2959 struct plt_entry *ent;
2960
2961 if (addend < 32768)
2962 sec = NULL;
2963 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2964 if (ent->sec == sec && ent->addend == addend)
2965 break;
2966 if (ent == NULL)
2967 {
2968 bfd_size_type amt = sizeof (*ent);
2969 ent = bfd_alloc (abfd, amt);
2970 if (ent == NULL)
2971 return FALSE;
2972 ent->next = h->plt.plist;
2973 ent->sec = sec;
2974 ent->addend = addend;
2975 ent->plt.refcount = 0;
2976 h->plt.plist = ent;
2977 }
2978 ent->plt.refcount += 1;
2979 return TRUE;
2980}
2981
2982static struct plt_entry *
2983find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
2984{
2985 struct plt_entry *ent;
2986
2987 if (addend < 32768)
2988 sec = NULL;
2989 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2990 if (ent->sec == sec && ent->addend == addend)
2991 break;
2992 return ent;
2993}
2994
25dbc73a
AM		 2995static void
2996bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2997{
2998 (*_bfd_error_handler)
2999 (_("%B: relocation %s cannot be used when making a shared object"),
3000 abfd,
3001 ppc_elf_howto_table[r_type]->name);
3002 bfd_set_error (bfd_error_bad_value);
252b5132
RH		 3003}
3004
25dbc73a
AM		 3005/* Look through the relocs for a section during the first phase, and
3006 allocate space in the global offset table or procedure linkage
3007 table. */
252b5132 3008
b34976b6 3009static bfd_boolean
25dbc73a
AM		 3010ppc_elf_check_relocs (bfd *abfd,
3011 struct bfd_link_info *info,
3012 asection *sec,
3013 const Elf_Internal_Rela *relocs)
252b5132 3014{
7619e7c7 3015 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM		 3016 Elf_Internal_Shdr *symtab_hdr;
3017 struct elf_link_hash_entry **sym_hashes;
3018 const Elf_Internal_Rela *rel;
3019 const Elf_Internal_Rela *rel_end;
a6aa5195 3020 asection *got2, *sreloc;
25dbc73a
AM		 3021
3022 if (info->relocatable)
3023 return TRUE;
252b5132 3024
c87b5a93
AM		 3025 /* Don't do anything special with non-loaded, non-alloced sections.
3026 In particular, any relocs in such sections should not affect GOT
3027 and PLT reference counting (ie. we don't allow them to create GOT
3028 or PLT entries), there's no possibility or desire to optimize TLS
3029 relocs, and there's not much point in propagating relocs to shared
3030 libs that the dynamic linker won't relocate. */
3031 if ((sec->flags & SEC_ALLOC) == 0)
3032 return TRUE;
3033
252b5132 3034#ifdef DEBUG
25dbc73a
AM		 3035 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3036 sec, abfd);
252b5132
RH		 3037#endif
3038
25dbc73a
AM		 3039 /* Initialize howto table if not already done. */
3040 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3041 ppc_elf_howto_init ();
3042
7619e7c7 3043 htab = ppc_elf_hash_table (info);
25dbc73a
AM		 3044 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3045 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3046 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM		 3047 sreloc = NULL;
3048
3049 rel_end = relocs + sec->reloc_count;
3050 for (rel = relocs; rel < rel_end; rel++)
3051 {
3052 unsigned long r_symndx;
3053 enum elf_ppc_reloc_type r_type;
3054 struct elf_link_hash_entry *h;
3055 int tls_type = 0;
3056
3057 r_symndx = ELF32_R_SYM (rel->r_info);
3058 if (r_symndx < symtab_hdr->sh_info)
3059 h = NULL;
3060 else
973a3492
L		 3061 {
3062 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3063 while (h->root.type == bfd_link_hash_indirect
3064 || h->root.type == bfd_link_hash_warning)
3065 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3066 }
25dbc73a
AM		 3067
3068 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3069 This shows up in particular in an R_PPC_ADDR32 in the eabi
3070 startup code. */
3b36f7e6
AM		 3071 if (h != NULL
3072 && htab->got == NULL
3073 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3074 {
3b36f7e6
AM		 3075 if (htab->elf.dynobj == NULL)
3076 htab->elf.dynobj = abfd;
3077 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3078 return FALSE;
3079 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3080 }
252b5132 3081
25dbc73a
AM		 3082 r_type = ELF32_R_TYPE (rel->r_info);
3083 switch (r_type)
3084 {
3085 case R_PPC_GOT_TLSLD16:
3086 case R_PPC_GOT_TLSLD16_LO:
3087 case R_PPC_GOT_TLSLD16_HI:
3088 case R_PPC_GOT_TLSLD16_HA:
3089 htab->tlsld_got.refcount += 1;
3090 tls_type = TLS_TLS | TLS_LD;
3091 goto dogottls;
252b5132 3092
25dbc73a
AM		 3093 case R_PPC_GOT_TLSGD16:
3094 case R_PPC_GOT_TLSGD16_LO:
3095 case R_PPC_GOT_TLSGD16_HI:
3096 case R_PPC_GOT_TLSGD16_HA:
3097 tls_type = TLS_TLS | TLS_GD;
3098 goto dogottls;
3099
3100 case R_PPC_GOT_TPREL16:
3101 case R_PPC_GOT_TPREL16_LO:
3102 case R_PPC_GOT_TPREL16_HI:
3103 case R_PPC_GOT_TPREL16_HA:
3104 if (info->shared)
3105 info->flags |= DF_STATIC_TLS;
3106 tls_type = TLS_TLS | TLS_TPREL;
3107 goto dogottls;
3108
3109 case R_PPC_GOT_DTPREL16:
3110 case R_PPC_GOT_DTPREL16_LO:
3111 case R_PPC_GOT_DTPREL16_HI:
3112 case R_PPC_GOT_DTPREL16_HA:
3113 tls_type = TLS_TLS | TLS_DTPREL;
3114 dogottls:
3115 sec->has_tls_reloc = 1;
3116 /* Fall thru */
252b5132 3117
25dbc73a
AM		 3118 /* GOT16 relocations */
3119 case R_PPC_GOT16:
3120 case R_PPC_GOT16_LO:
3121 case R_PPC_GOT16_HI:
3122 case R_PPC_GOT16_HA:
3123 /* This symbol requires a global offset table entry. */
3124 if (htab->got == NULL)
3125 {
3126 if (htab->elf.dynobj == NULL)
3127 htab->elf.dynobj = abfd;
3128 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3129 return FALSE;
3130 }
3131 if (h != NULL)
3132 {
3133 h->got.refcount += 1;
3134 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3135 }
3136 else
3137 /* This is a global offset table entry for a local symbol. */
3138 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3139 return FALSE;
3140 break;
252b5132 3141
25dbc73a
AM		 3142 /* Indirect .sdata relocation. */
3143 case R_PPC_EMB_SDAI16:
3144 if (info->shared)
3145 {
3146 bad_shared_reloc (abfd, r_type);
3147 return FALSE;
3148 }
c9a2f333
AM		 3149 if (htab->sdata[0].section == NULL
3150 && !ppc_elf_create_linker_section (abfd, info, 0,
3151 &htab->sdata[0]))
3152 return FALSE;
76750a2f
AM		 3153 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3154 h, rel))
25dbc73a 3155 return FALSE;
046183de
AM		 3156 if (h != NULL)
3157 {
3158 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3159 h->non_got_ref = TRUE;
3160 }
25dbc73a 3161 break;
252b5132 3162
25dbc73a
AM		 3163 /* Indirect .sdata2 relocation. */
3164 case R_PPC_EMB_SDA2I16:
3165 if (info->shared)
3166 {
3167 bad_shared_reloc (abfd, r_type);
3168 return FALSE;
3169 }
c9a2f333
AM		 3170 if (htab->sdata[1].section == NULL
3171 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3172 &htab->sdata[1]))
3173 return FALSE;
76750a2f
AM		 3174 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3175 h, rel))
25dbc73a 3176 return FALSE;
046183de
AM		 3177 if (h != NULL)
3178 {
3179 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3180 h->non_got_ref = TRUE;
3181 }
25dbc73a 3182 break;
252b5132 3183
25dbc73a 3184 case R_PPC_SDAREL16:
046183de
AM		 3185 if (info->shared)
3186 {
3187 bad_shared_reloc (abfd, r_type);
3188 return FALSE;
3189 }
3190 if (htab->sdata[0].sym == NULL
3191 && !create_sdata_sym (htab, &htab->sdata[0]))
3192 return FALSE;
3193 if (h != NULL)
3194 {
3195 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3196 h->non_got_ref = TRUE;
3197 }
3198 break;
3199
25dbc73a 3200 case R_PPC_EMB_SDA2REL:
046183de
AM		 3201 if (info->shared)
3202 {
3203 bad_shared_reloc (abfd, r_type);
3204 return FALSE;
3205 }
3206 if (htab->sdata[1].sym == NULL
3207 && !create_sdata_sym (htab, &htab->sdata[1]))
3208 return FALSE;
3209 if (h != NULL)
3210 {
3211 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3212 h->non_got_ref = TRUE;
3213 }
3214 break;
3215
25dbc73a
AM		 3216 case R_PPC_EMB_SDA21:
3217 case R_PPC_EMB_RELSDA:
046183de
AM		 3218 if (info->shared)
3219 {
3220 bad_shared_reloc (abfd, r_type);
3221 return FALSE;
3222 }
3223 if (htab->sdata[0].sym == NULL
3224 && !create_sdata_sym (htab, &htab->sdata[0]))
3225 return FALSE;
3226 if (htab->sdata[1].sym == NULL
3227 && !create_sdata_sym (htab, &htab->sdata[1]))
3228 return FALSE;
3229 if (h != NULL)
3230 {
3231 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3232 h->non_got_ref = TRUE;
3233 }
3234 break;
3235
25dbc73a
AM		 3236 case R_PPC_EMB_NADDR32:
3237 case R_PPC_EMB_NADDR16:
3238 case R_PPC_EMB_NADDR16_LO:
3239 case R_PPC_EMB_NADDR16_HI:
3240 case R_PPC_EMB_NADDR16_HA:
3241 if (info->shared)
3242 {
3243 bad_shared_reloc (abfd, r_type);
3244 return FALSE;
3245 }
4dc4a9a5 3246 if (h != NULL)
046183de 3247 h->non_got_ref = TRUE;
25dbc73a 3248 break;
252b5132 3249
25dbc73a
AM		 3250 case R_PPC_PLT32:
3251 case R_PPC_PLTREL24:
3252 case R_PPC_PLTREL32:
3253 case R_PPC_PLT16_LO:
3254 case R_PPC_PLT16_HI:
3255 case R_PPC_PLT16_HA:
3256#ifdef DEBUG
3257 fprintf (stderr, "Reloc requires a PLT entry\n");
3258#endif
3259 /* This symbol requires a procedure linkage table entry. We
3260 actually build the entry in finish_dynamic_symbol,
3261 because this might be a case of linking PIC code without
3262 linking in any dynamic objects, in which case we don't
3263 need to generate a procedure linkage table after all. */
7619e7c7 3264
25dbc73a
AM		 3265 if (h == NULL)
3266 {
3267 /* It does not make sense to have a procedure linkage
3268 table entry for a local symbol. */
3269 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3270 "local symbol"),
3271 abfd,
3272 sec,
3273 (long) rel->r_offset,
3274 ppc_elf_howto_table[r_type]->name);
3275 bfd_set_error (bfd_error_bad_value);
3276 return FALSE;
3277 }
a6aa5195
AM		 3278 else
3279 {
3280 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
ee05f2fe 3281
a6aa5195
AM		 3282 h->needs_plt = 1;
3283 if (!update_plt_info (abfd, h, got2, addend))
3284 return FALSE;
3285 }
25dbc73a 3286 break;
ee05f2fe 3287
25dbc73a
AM		 3288 /* The following relocations don't need to propagate the
3289 relocation if linking a shared object since they are
3290 section relative. */
3291 case R_PPC_SECTOFF:
3292 case R_PPC_SECTOFF_LO:
3293 case R_PPC_SECTOFF_HI:
3294 case R_PPC_SECTOFF_HA:
3295 case R_PPC_DTPREL16:
3296 case R_PPC_DTPREL16_LO:
3297 case R_PPC_DTPREL16_HI:
3298 case R_PPC_DTPREL16_HA:
3299 case R_PPC_TOC16:
3300 break;
252b5132 3301
d7128ce4
AM		 3302 case R_PPC_REL16:
3303 case R_PPC_REL16_LO:
3304 case R_PPC_REL16_HI:
3305 case R_PPC_REL16_HA:
4a3dc543 3306 htab->can_use_new_plt = 1;
d7128ce4
AM		 3307 break;
3308
a6aa5195 3309 /* These are just markers. */
25dbc73a
AM		 3310 case R_PPC_TLS:
3311 case R_PPC_EMB_MRKREF:
3312 case R_PPC_NONE:
3313 case R_PPC_max:
3314 break;
252b5132 3315
25dbc73a
AM		 3316 /* These should only appear in dynamic objects. */
3317 case R_PPC_COPY:
3318 case R_PPC_GLOB_DAT:
3319 case R_PPC_JMP_SLOT:
3320 case R_PPC_RELATIVE:
3321 break;
252b5132 3322
25dbc73a
AM		 3323 /* These aren't handled yet. We'll report an error later. */
3324 case R_PPC_ADDR30:
3325 case R_PPC_EMB_RELSEC16:
3326 case R_PPC_EMB_RELST_LO:
3327 case R_PPC_EMB_RELST_HI:
3328 case R_PPC_EMB_RELST_HA:
3329 case R_PPC_EMB_BIT_FLD:
3330 break;
252b5132 3331
25dbc73a
AM		 3332 /* This refers only to functions defined in the shared library. */
3333 case R_PPC_LOCAL24PC:
4a3dc543
RS		 3334 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3335 htab->plt_type = PLT_OLD;
25dbc73a 3336 break;
252b5132 3337
25dbc73a
AM		 3338 /* This relocation describes the C++ object vtable hierarchy.
3339 Reconstruct it for later use during GC. */
3340 case R_PPC_GNU_VTINHERIT:
3341 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3342 return FALSE;
3343 break;
252b5132 3344
25dbc73a
AM		 3345 /* This relocation describes which C++ vtable entries are actually
3346 used. Record for later use during GC. */
3347 case R_PPC_GNU_VTENTRY:
3348 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3349 return FALSE;
3350 break;
252b5132 3351
25dbc73a
AM		 3352 /* We shouldn't really be seeing these. */
3353 case R_PPC_TPREL32:
3354 if (info->shared)
3355 info->flags |= DF_STATIC_TLS;
3356 goto dodyn;
252b5132 3357
25dbc73a
AM		 3358 /* Nor these. */
3359 case R_PPC_DTPMOD32:
3360 case R_PPC_DTPREL32:
3361 goto dodyn;
252b5132 3362
25dbc73a
AM		 3363 case R_PPC_TPREL16:
3364 case R_PPC_TPREL16_LO:
3365 case R_PPC_TPREL16_HI:
3366 case R_PPC_TPREL16_HA:
3367 if (info->shared)
3368 info->flags |= DF_STATIC_TLS;
3369 goto dodyn;
ee05f2fe 3370
9edfd1af
AM		 3371 case R_PPC_REL32:
3372 if (h == NULL
3373 && got2 != NULL
3374 && (sec->flags & SEC_CODE) != 0
3375 && (info->shared || info->pie)
4a3dc543 3376 && htab->plt_type == PLT_UNSET)
9edfd1af
AM		 3377 {
3378 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3379 the start of a function, which assembles to a REL32
3380 reference to .got2. If we detect one of these, then
3381 force the old PLT layout because the linker cannot
3382 reliably deduce the GOT pointer value needed for
3383 PLT call stubs. */
3384 asection *s;
3385
3386 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3387 r_symndx);
3388 if (s == got2)
4a3dc543 3389 htab->plt_type = PLT_OLD;
9edfd1af 3390 }
7123df0e 3391 if (h == NULL || h == htab->elf.hgot)
fd38b44c 3392 break;
7123df0e 3393 goto dodyn1;
9edfd1af 3394
25dbc73a
AM		 3395 case R_PPC_REL24:
3396 case R_PPC_REL14:
3397 case R_PPC_REL14_BRTAKEN:
3398 case R_PPC_REL14_BRNTAKEN:
d7128ce4 3399 if (h == NULL)
25dbc73a 3400 break;
7123df0e 3401 if (h == htab->elf.hgot)
d7128ce4 3402 {
7123df0e
AM		 3403 if (htab->plt_type == PLT_UNSET)
3404 htab->plt_type = PLT_OLD;
d7128ce4
AM		 3405 break;
3406 }
25dbc73a 3407 /* fall through */
ee05f2fe 3408
25dbc73a
AM		 3409 case R_PPC_ADDR32:
3410 case R_PPC_ADDR24:
3411 case R_PPC_ADDR16:
3412 case R_PPC_ADDR16_LO:
3413 case R_PPC_ADDR16_HI:
3414 case R_PPC_ADDR16_HA:
3415 case R_PPC_ADDR14:
3416 case R_PPC_ADDR14_BRTAKEN:
3417 case R_PPC_ADDR14_BRNTAKEN:
3418 case R_PPC_UADDR32:
3419 case R_PPC_UADDR16:
7123df0e 3420 dodyn1:
25dbc73a
AM		 3421 if (h != NULL && !info->shared)
3422 {
3423 /* We may need a plt entry if the symbol turns out to be
3424 a function defined in a dynamic object. */
a6aa5195
AM		 3425 if (!update_plt_info (abfd, h, NULL, 0))
3426 return FALSE;
7fce784e 3427
25dbc73a
AM		 3428 /* We may need a copy reloc too. */
3429 h->non_got_ref = 1;
3430 }
7619e7c7 3431
25dbc73a
AM		 3432 dodyn:
3433 /* If we are creating a shared library, and this is a reloc
3434 against a global symbol, or a non PC relative reloc
3435 against a local symbol, then we need to copy the reloc
3436 into the shared library. However, if we are linking with
3437 -Bsymbolic, we do not need to copy a reloc against a
3438 global symbol which is defined in an object we are
3439 including in the link (i.e., DEF_REGULAR is set). At
3440 this point we have not seen all the input files, so it is
3441 possible that DEF_REGULAR is not set now but will be set
3442 later (it is never cleared). In case of a weak definition,
3443 DEF_REGULAR may be cleared later by a strong definition in
3444 a shared library. We account for that possibility below by
3445 storing information in the dyn_relocs field of the hash
3446 table entry. A similar situation occurs when creating
3447 shared libraries and symbol visibility changes render the
3448 symbol local.
7619e7c7 3449
25dbc73a
AM		 3450 If on the other hand, we are creating an executable, we
3451 may need to keep relocations for symbols satisfied by a
3452 dynamic library if we manage to avoid copy relocs for the
3453 symbol. */
3454 if ((info->shared
3455 && (MUST_BE_DYN_RELOC (r_type)
3456 || (h != NULL
3457 && (! info->symbolic
3458 || h->root.type == bfd_link_hash_defweak
3459 || !h->def_regular))))
3460 || (ELIMINATE_COPY_RELOCS
3461 && !info->shared
25dbc73a
AM		 3462 && h != NULL
3463 && (h->root.type == bfd_link_hash_defweak
3464 || !h->def_regular)))
3465 {
3466 struct ppc_elf_dyn_relocs *p;
3467 struct ppc_elf_dyn_relocs **head;
7619e7c7 3468
25dbc73a
AM		 3469#ifdef DEBUG
3470 fprintf (stderr,
3471 "ppc_elf_check_relocs needs to "
3472 "create relocation for %s\n",
3473 (h && h->root.root.string
3474 ? h->root.root.string : "<unknown>"));
3475#endif
3476 if (sreloc == NULL)
3477 {
3478 const char *name;
7619e7c7 3479
25dbc73a
AM		 3480 name = (bfd_elf_string_from_elf_section
3481 (abfd,
3482 elf_elfheader (abfd)->e_shstrndx,
3483 elf_section_data (sec)->rel_hdr.sh_name));
3484 if (name == NULL)
3485 return FALSE;
7619e7c7 3486
0112cd26 3487 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
25dbc73a
AM		 3488 && strcmp (bfd_get_section_name (abfd, sec),
3489 name + 5) == 0);
7619e7c7 3490
c9a2f333
AM		 3491 if (htab->elf.dynobj == NULL)
3492 htab->elf.dynobj = abfd;
25dbc73a
AM		 3493 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3494 if (sreloc == NULL)
3495 {
3496 flagword flags;
7619e7c7 3497
25dbc73a 3498 flags = (SEC_HAS_CONTENTS | SEC_READONLY
c87b5a93
AM		 3499 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3500 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 3501 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3502 name,
3503 flags);
25dbc73a 3504 if (sreloc == NULL
25dbc73a
AM		 3505 || ! bfd_set_section_alignment (htab->elf.dynobj,
3506 sreloc, 2))
3507 return FALSE;
3508 }
3509 elf_section_data (sec)->sreloc = sreloc;
3510 }
7619e7c7 3511
25dbc73a
AM		 3512 /* If this is a global symbol, we count the number of
3513 relocations we need for this symbol. */
3514 if (h != NULL)
3515 {
3516 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3517 }
3518 else
3519 {
3520 /* Track dynamic relocs needed for local syms too.
3521 We really need local syms available to do this
3522 easily. Oh well. */
7619e7c7 3523
25dbc73a 3524 asection *s;
6edfbbad
DJ		 3525 void *vpp;
3526
25dbc73a
AM		 3527 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3528 sec, r_symndx);
3529 if (s == NULL)
3530 return FALSE;
7fce784e 3531
6edfbbad
DJ		 3532 vpp = &elf_section_data (s)->local_dynrel;
3533 head = (struct ppc_elf_dyn_relocs **) vpp;
25dbc73a 3534 }
7fce784e 3535
25dbc73a
AM		 3536 p = *head;
3537 if (p == NULL || p->sec != sec)
3538 {
3539 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3540 if (p == NULL)
3541 return FALSE;
3542 p->next = *head;
3543 *head = p;
3544 p->sec = sec;
3545 p->count = 0;
3546 p->pc_count = 0;
3547 }
3548
3549 p->count += 1;
3550 if (!MUST_BE_DYN_RELOC (r_type))
3551 p->pc_count += 1;
7619e7c7 3552 }
25dbc73a
AM		 3553
3554 break;
7619e7c7
AM		 3555 }
3556 }
ee05f2fe 3557
25dbc73a
AM		 3558 return TRUE;
3559}
3560\f
8853c3d3
AM		 3561/* Merge backend specific data from an object file to the output
3562 object file when linking. */
3563
3564static bfd_boolean
3565ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3566{
3567 flagword old_flags;
3568 flagword new_flags;
3569 bfd_boolean error;
3570
3571 if (!is_ppc_elf_target (ibfd->xvec)
3572 || !is_ppc_elf_target (obfd->xvec))
3573 return TRUE;
3574
3575 /* Check if we have the same endianess. */
3576 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3577 return FALSE;
3578
3579 new_flags = elf_elfheader (ibfd)->e_flags;
3580 old_flags = elf_elfheader (obfd)->e_flags;
3581 if (!elf_flags_init (obfd))
3582 {
3583 /* First call, no flags set. */
3584 elf_flags_init (obfd) = TRUE;
3585 elf_elfheader (obfd)->e_flags = new_flags;
3586 }
3587
3588 /* Compatible flags are ok. */
3589 else if (new_flags == old_flags)
3590 ;
3591
3592 /* Incompatible flags. */
3593 else
3594 {
3595 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3596 to be linked with either. */
3597 error = FALSE;
3598 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3599 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3600 {
3601 error = TRUE;
3602 (*_bfd_error_handler)
3603 (_("%B: compiled with -mrelocatable and linked with "
3604 "modules compiled normally"), ibfd);
3605 }
3606 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3607 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3608 {
3609 error = TRUE;
3610 (*_bfd_error_handler)
3611 (_("%B: compiled normally and linked with "
3612 "modules compiled with -mrelocatable"), ibfd);
3613 }
3614
3615 /* The output is -mrelocatable-lib iff both the input files are. */
3616 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3617 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3618
3619 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3620 but each input file is either -mrelocatable or -mrelocatable-lib. */
3621 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3622 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3623 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3624 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3625
3626 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3627 any module uses it. */
3628 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3629
3630 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3631 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3632
3633 /* Warn about any other mismatches. */
3634 if (new_flags != old_flags)
3635 {
3636 error = TRUE;
3637 (*_bfd_error_handler)
3638 (_("%B: uses different e_flags (0x%lx) fields "
3639 "than previous modules (0x%lx)"),
3640 ibfd, (long) new_flags, (long) old_flags);
3641 }
3642
3643 if (error)
3644 {
3645 bfd_set_error (bfd_error_bad_value);
3646 return FALSE;
3647 }
3648 }
3649
3650 return TRUE;
3651}
3652\f
d7128ce4
AM		 3653/* Choose which PLT scheme to use, and set .plt flags appropriately.
3654 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3655int
3656ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3657 struct bfd_link_info *info,
0ba07910
AM		 3658 int force_old_plt,
3659 int emit_stub_syms)
d7128ce4
AM		 3660{
3661 struct ppc_elf_link_hash_table *htab;
9d8504b1 3662 flagword flags;
d7128ce4
AM		 3663
3664 htab = ppc_elf_hash_table (info);
4a3dc543
RS		 3665
3666 if (htab->plt_type == PLT_UNSET)
3667 htab->plt_type = (force_old_plt || !htab->can_use_new_plt
3668 ? PLT_OLD : PLT_NEW);
d7128ce4 3669
0ba07910
AM		 3670 htab->emit_stub_syms = emit_stub_syms;
3671
4a3dc543 3672 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 3673
4a3dc543 3674 if (htab->plt_type == PLT_NEW)
9d8504b1
PB		 3675 {
3676 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3677 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM		 3678
3679 /* The new PLT is a loaded section. */
3680 if (htab->plt != NULL
3681 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3682 return -1;
3683
3684 /* The new GOT is not executable. */
3685 if (htab->got != NULL
3686 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3687 return -1;
d7128ce4
AM		 3688 }
3689 else
3690 {
3691 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM		 3692 if (htab->glink != NULL
3693 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3694 return -1;
d7128ce4 3695 }
4a3dc543 3696 return htab->plt_type == PLT_NEW;
d7128ce4
AM		 3697}
3698\f
25dbc73a
AM		 3699/* Return the section that should be marked against GC for a given
3700 relocation. */
586119b3 3701
25dbc73a
AM		 3702static asection *
3703ppc_elf_gc_mark_hook (asection *sec,
07adf181 3704 struct bfd_link_info *info,
25dbc73a
AM		 3705 Elf_Internal_Rela *rel,
3706 struct elf_link_hash_entry *h,
3707 Elf_Internal_Sym *sym)
3708{
3709 if (h != NULL)
07adf181
AM		 3710 switch (ELF32_R_TYPE (rel->r_info))
3711 {
3712 case R_PPC_GNU_VTINHERIT:
3713 case R_PPC_GNU_VTENTRY:
3714 return NULL;
3715 }
3716
3717 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 3718}
a876ecf9 3719
25dbc73a
AM		 3720/* Update the got, plt and dynamic reloc reference counts for the
3721 section being removed. */
3722
3723static bfd_boolean
3724ppc_elf_gc_sweep_hook (bfd *abfd,
3725 struct bfd_link_info *info,
3726 asection *sec,
3727 const Elf_Internal_Rela *relocs)
3728{
3729 struct ppc_elf_link_hash_table *htab;
3730 Elf_Internal_Shdr *symtab_hdr;
3731 struct elf_link_hash_entry **sym_hashes;
3732 bfd_signed_vma *local_got_refcounts;
3733 const Elf_Internal_Rela *rel, *relend;
a6aa5195 3734 asection *got2;
25dbc73a 3735
c87b5a93
AM		 3736 if ((sec->flags & SEC_ALLOC) == 0)
3737 return TRUE;
3738
25dbc73a
AM		 3739 elf_section_data (sec)->local_dynrel = NULL;
3740
3741 htab = ppc_elf_hash_table (info);
3742 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3743 sym_hashes = elf_sym_hashes (abfd);
3744 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 3745 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM		 3746
3747 relend = relocs + sec->reloc_count;
3748 for (rel = relocs; rel < relend; rel++)
3749 {
3750 unsigned long r_symndx;
3751 enum elf_ppc_reloc_type r_type;
3752 struct elf_link_hash_entry *h = NULL;
3753
3754 r_symndx = ELF32_R_SYM (rel->r_info);
3755 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 3756 {
25dbc73a
AM		 3757 struct ppc_elf_dyn_relocs **pp, *p;
3758 struct ppc_elf_link_hash_entry *eh;
3759
3760 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3761 while (h->root.type == bfd_link_hash_indirect
3762 || h->root.type == bfd_link_hash_warning)
3763 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3764 eh = (struct ppc_elf_link_hash_entry *) h;
3765
3766 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3767 if (p->sec == sec)
3768 {
3769 /* Everything must go for SEC. */
3770 *pp = p->next;
3771 break;
3772 }
a876ecf9 3773 }
ee05f2fe 3774
25dbc73a
AM		 3775 r_type = ELF32_R_TYPE (rel->r_info);
3776 switch (r_type)
ee05f2fe 3777 {
25dbc73a
AM		 3778 case R_PPC_GOT_TLSLD16:
3779 case R_PPC_GOT_TLSLD16_LO:
3780 case R_PPC_GOT_TLSLD16_HI:
3781 case R_PPC_GOT_TLSLD16_HA:
3782 htab->tlsld_got.refcount -= 1;
3783 /* Fall thru */
3784
3785 case R_PPC_GOT_TLSGD16:
3786 case R_PPC_GOT_TLSGD16_LO:
3787 case R_PPC_GOT_TLSGD16_HI:
3788 case R_PPC_GOT_TLSGD16_HA:
3789 case R_PPC_GOT_TPREL16:
3790 case R_PPC_GOT_TPREL16_LO:
3791 case R_PPC_GOT_TPREL16_HI:
3792 case R_PPC_GOT_TPREL16_HA:
3793 case R_PPC_GOT_DTPREL16:
3794 case R_PPC_GOT_DTPREL16_LO:
3795 case R_PPC_GOT_DTPREL16_HI:
3796 case R_PPC_GOT_DTPREL16_HA:
3797 case R_PPC_GOT16:
3798 case R_PPC_GOT16_LO:
3799 case R_PPC_GOT16_HI:
3800 case R_PPC_GOT16_HA:
3801 if (h != NULL)
ee05f2fe 3802 {
25dbc73a
AM		 3803 if (h->got.refcount > 0)
3804 h->got.refcount--;
ee05f2fe 3805 }
25dbc73a
AM		 3806 else if (local_got_refcounts != NULL)
3807 {
3808 if (local_got_refcounts[r_symndx] > 0)
3809 local_got_refcounts[r_symndx]--;
3810 }
3811 break;
ee05f2fe 3812
25dbc73a
AM		 3813 case R_PPC_REL24:
3814 case R_PPC_REL14:
3815 case R_PPC_REL14_BRTAKEN:
3816 case R_PPC_REL14_BRNTAKEN:
3817 case R_PPC_REL32:
3b36f7e6 3818 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM		 3819 break;
3820 /* Fall thru */
ee05f2fe 3821
25dbc73a
AM		 3822 case R_PPC_ADDR32:
3823 case R_PPC_ADDR24:
3824 case R_PPC_ADDR16:
3825 case R_PPC_ADDR16_LO:
3826 case R_PPC_ADDR16_HI:
3827 case R_PPC_ADDR16_HA:
3828 case R_PPC_ADDR14:
3829 case R_PPC_ADDR14_BRTAKEN:
3830 case R_PPC_ADDR14_BRNTAKEN:
3831 case R_PPC_UADDR32:
3832 case R_PPC_UADDR16:
87538722
AM		 3833 if (info->shared)
3834 break;
3835
25dbc73a
AM		 3836 case R_PPC_PLT32:
3837 case R_PPC_PLTREL24:
87538722 3838 case R_PPC_PLTREL32:
25dbc73a
AM		 3839 case R_PPC_PLT16_LO:
3840 case R_PPC_PLT16_HI:
3841 case R_PPC_PLT16_HA:
3842 if (h != NULL)
3843 {
a6aa5195
AM		 3844 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3845 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3846 if (ent->plt.refcount > 0)
3847 ent->plt.refcount -= 1;
25dbc73a
AM		 3848 }
3849 break;
ee05f2fe 3850
25dbc73a
AM		 3851 default:
3852 break;
3853 }
7fce784e 3854 }
7fce784e
AS		 3855 return TRUE;
3856}
25dbc73a
AM		 3857\f
3858/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7fce784e 3859
25dbc73a
AM		 3860asection *
3861ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 3862{
25dbc73a 3863 struct ppc_elf_link_hash_table *htab;
7fce784e 3864
25dbc73a 3865 htab = ppc_elf_hash_table (info);
4a3dc543 3866 if (htab->plt_type == PLT_NEW
d7128ce4
AM		 3867 && htab->plt != NULL
3868 && htab->plt->output_section != NULL)
3869 {
3870 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3871 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3872 }
3873
25dbc73a
AM		 3874 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3875 FALSE, FALSE, TRUE);
25dbc73a 3876 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS		 3877}
3878
25dbc73a
AM		 3879/* Run through all the TLS relocs looking for optimization
3880 opportunities. */
252b5132 3881
25dbc73a
AM		 3882bfd_boolean
3883ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3884 struct bfd_link_info *info)
252b5132 3885{
7fce784e 3886 bfd *ibfd;
25dbc73a
AM		 3887 asection *sec;
3888 struct ppc_elf_link_hash_table *htab;
252b5132 3889
25dbc73a
AM		 3890 if (info->relocatable || info->shared)
3891 return TRUE;
252b5132 3892
7619e7c7 3893 htab = ppc_elf_hash_table (info);
25dbc73a 3894 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
252b5132 3895 {
25dbc73a
AM		 3896 Elf_Internal_Sym *locsyms = NULL;
3897 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7619e7c7 3898
25dbc73a
AM		 3899 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3900 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3901 {
3902 Elf_Internal_Rela *relstart, *rel, *relend;
3903 int expecting_tls_get_addr;
252b5132 3904
25dbc73a
AM		 3905 /* Read the relocations. */
3906 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3907 info->keep_memory);
3908 if (relstart == NULL)
3909 return FALSE;
7619e7c7 3910
25dbc73a
AM		 3911 expecting_tls_get_addr = 0;
3912 relend = relstart + sec->reloc_count;
3913 for (rel = relstart; rel < relend; rel++)
3914 {
3915 enum elf_ppc_reloc_type r_type;
3916 unsigned long r_symndx;
3917 struct elf_link_hash_entry *h = NULL;
3918 char *tls_mask;
3919 char tls_set, tls_clear;
3920 bfd_boolean is_local;
7fce784e 3921
25dbc73a
AM		 3922 r_symndx = ELF32_R_SYM (rel->r_info);
3923 if (r_symndx >= symtab_hdr->sh_info)
3924 {
3925 struct elf_link_hash_entry **sym_hashes;
7fce784e 3926
25dbc73a
AM		 3927 sym_hashes = elf_sym_hashes (ibfd);
3928 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3929 while (h->root.type == bfd_link_hash_indirect
3930 || h->root.type == bfd_link_hash_warning)
3931 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3932 }
7619e7c7 3933
25dbc73a
AM		 3934 is_local = FALSE;
3935 if (h == NULL
3936 || !h->def_dynamic)
3937 is_local = TRUE;
7619e7c7 3938
25dbc73a
AM		 3939 r_type = ELF32_R_TYPE (rel->r_info);
3940 switch (r_type)
7619e7c7 3941 {
25dbc73a
AM		 3942 case R_PPC_GOT_TLSLD16:
3943 case R_PPC_GOT_TLSLD16_LO:
3944 case R_PPC_GOT_TLSLD16_HI:
3945 case R_PPC_GOT_TLSLD16_HA:
3946 /* These relocs should never be against a symbol
3947 defined in a shared lib. Leave them alone if
3948 that turns out to be the case. */
3949 expecting_tls_get_addr = 0;
3950 htab->tlsld_got.refcount -= 1;
3951 if (!is_local)
3952 continue;
3953
3954 /* LD -> LE */
3955 tls_set = 0;
3956 tls_clear = TLS_LD;
3957 expecting_tls_get_addr = 1;
3958 break;
3959
3960 case R_PPC_GOT_TLSGD16:
3961 case R_PPC_GOT_TLSGD16_LO:
3962 case R_PPC_GOT_TLSGD16_HI:
3963 case R_PPC_GOT_TLSGD16_HA:
3964 if (is_local)
3965 /* GD -> LE */
3966 tls_set = 0;
3967 else
3968 /* GD -> IE */
3969 tls_set = TLS_TLS | TLS_TPRELGD;
3970 tls_clear = TLS_GD;
3971 expecting_tls_get_addr = 1;
3972 break;
3973
3974 case R_PPC_GOT_TPREL16:
3975 case R_PPC_GOT_TPREL16_LO:
3976 case R_PPC_GOT_TPREL16_HI:
3977 case R_PPC_GOT_TPREL16_HA:
3978 expecting_tls_get_addr = 0;
3979 if (is_local)
3980 {
3981 /* IE -> LE */
3982 tls_set = 0;
3983 tls_clear = TLS_TPREL;
3984 break;
3985 }
3986 else
3987 continue;
3988
3989 case R_PPC_REL14:
3990 case R_PPC_REL14_BRTAKEN:
3991 case R_PPC_REL14_BRNTAKEN:
3992 case R_PPC_REL24:
3993 if (expecting_tls_get_addr
3994 && h != NULL
3995 && h == htab->tls_get_addr)
3996 {
a6aa5195
AM		 3997 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
3998 if (ent != NULL && ent->plt.refcount > 0)
3999 ent->plt.refcount -= 1;
25dbc73a
AM		 4000 }
4001 expecting_tls_get_addr = 0;
4002 continue;
4003
4004 default:
4005 expecting_tls_get_addr = 0;
4006 continue;
7619e7c7 4007 }
25dbc73a
AM		 4008
4009 if (h != NULL)
7619e7c7 4010 {
25dbc73a
AM		 4011 if (tls_set == 0)
4012 {
4013 /* We managed to get rid of a got entry. */
4014 if (h->got.refcount > 0)
4015 h->got.refcount -= 1;
4016 }
4017 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4018 }
4019 else
4020 {
4021 Elf_Internal_Sym *sym;
4022 bfd_signed_vma *lgot_refs;
4023 char *lgot_masks;
4024
4025 if (locsyms == NULL)
4026 {
4027 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4028 if (locsyms == NULL)
4029 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4030 symtab_hdr->sh_info,
4031 0, NULL, NULL, NULL);
4032 if (locsyms == NULL)
4033 {
4034 if (elf_section_data (sec)->relocs != relstart)
4035 free (relstart);
4036 return FALSE;
4037 }
4038 }
4039 sym = locsyms + r_symndx;
4040 lgot_refs = elf_local_got_refcounts (ibfd);
4041 if (lgot_refs == NULL)
4042 abort ();
4043 if (tls_set == 0)
4044 {
4045 /* We managed to get rid of a got entry. */
4046 if (lgot_refs[r_symndx] > 0)
4047 lgot_refs[r_symndx] -= 1;
4048 }
4049 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4050 tls_mask = &lgot_masks[r_symndx];
7619e7c7 4051 }
25dbc73a
AM		 4052
4053 *tls_mask |= tls_set;
4054 *tls_mask &= ~tls_clear;
7619e7c7 4055 }
25dbc73a
AM		 4056
4057 if (elf_section_data (sec)->relocs != relstart)
4058 free (relstart);
7619e7c7 4059 }
25dbc73a
AM		 4060
4061 if (locsyms != NULL
4062 && (symtab_hdr->contents != (unsigned char *) locsyms))
4063 {
4064 if (!info->keep_memory)
4065 free (locsyms);
4066 else
4067 symtab_hdr->contents = (unsigned char *) locsyms;
4068 }
7fce784e 4069 }
25dbc73a
AM		 4070 return TRUE;
4071}
4072\f
4073/* Adjust a symbol defined by a dynamic object and referenced by a
4074 regular object. The current definition is in some section of the
4075 dynamic object, but we're not including those sections. We have to
4076 change the definition to something the rest of the link can
4077 understand. */
7fce784e 4078
25dbc73a
AM		 4079static bfd_boolean
4080ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4081 struct elf_link_hash_entry *h)
4082{
4083 struct ppc_elf_link_hash_table *htab;
4084 asection *s;
4085 unsigned int power_of_two;
7fce784e 4086
25dbc73a
AM		 4087#ifdef DEBUG
4088 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4089 h->root.root.string);
4090#endif
252b5132 4091
25dbc73a
AM		 4092 /* Make sure we know what is going on here. */
4093 htab = ppc_elf_hash_table (info);
4094 BFD_ASSERT (htab->elf.dynobj != NULL
4095 && (h->needs_plt
4096 || h->u.weakdef != NULL
4097 || (h->def_dynamic
4098 && h->ref_regular
4099 && !h->def_regular)));
252b5132 4100
25dbc73a
AM		 4101 /* Deal with function syms. */
4102 if (h->type == STT_FUNC
4103 || h->needs_plt)
4104 {
4105 /* Clear procedure linkage table information for any symbol that
4106 won't need a .plt entry. */
a6aa5195
AM		 4107 struct plt_entry *ent;
4108 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4109 if (ent->plt.refcount > 0)
4110 break;
4111 if (ent == NULL
25dbc73a
AM		 4112 || SYMBOL_CALLS_LOCAL (info, h)
4113 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4114 && h->root.type == bfd_link_hash_undefweak))
252b5132 4115 {
25dbc73a 4116 /* A PLT entry is not required/allowed when:
252b5132 4117
25dbc73a
AM		 4118 1. We are not using ld.so; because then the PLT entry
4119 can't be set up, so we can't use one. In this case,
4120 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 4121
25dbc73a
AM		 4122 2. GC has rendered the entry unused.
4123
4124 3. We know for certain that a call to this symbol
4125 will go to this object, or will remain undefined. */
a6aa5195 4126 h->plt.plist = NULL;
25dbc73a
AM		 4127 h->needs_plt = 0;
4128 }
4129 return TRUE;
252b5132 4130 }
25dbc73a 4131 else
a6aa5195 4132 h->plt.plist = NULL;
252b5132 4133
25dbc73a
AM		 4134 /* If this is a weak symbol, and there is a real definition, the
4135 processor independent code will have arranged for us to see the
4136 real definition first, and we can just use the same value. */
4137 if (h->u.weakdef != NULL)
252b5132 4138 {
25dbc73a
AM		 4139 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4140 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4141 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4142 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4143 if (ELIMINATE_COPY_RELOCS)
4144 h->non_got_ref = h->u.weakdef->non_got_ref;
4145 return TRUE;
4146 }
dc810e39 4147
25dbc73a
AM		 4148 /* This is a reference to a symbol defined by a dynamic object which
4149 is not a function. */
252b5132 4150
25dbc73a
AM		 4151 /* If we are creating a shared library, we must presume that the
4152 only references to the symbol are via the global offset table.
4153 For such cases we need not do anything here; the relocations will
4154 be handled correctly by relocate_section. */
4155 if (info->shared)
4156 return TRUE;
252b5132 4157
25dbc73a
AM		 4158 /* If there are no references to this symbol that do not use the
4159 GOT, we don't need to generate a copy reloc. */
4160 if (!h->non_got_ref)
4161 return TRUE;
4162
4dc4a9a5
DJ		 4163 /* If we didn't find any dynamic relocs in read-only sections, then we'll
4164 be keeping the dynamic relocs and avoiding the copy reloc. We can't
4165 do this if there are any small data relocations. */
4166 if (ELIMINATE_COPY_RELOCS
4167 && !ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 4168 {
4169 struct ppc_elf_dyn_relocs *p;
4170 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
252b5132 4171 {
25dbc73a
AM		 4172 s = p->sec->output_section;
4173 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4174 break;
252b5132
RH		 4175 }
4176
25dbc73a 4177 if (p == NULL)
252b5132 4178 {
25dbc73a
AM		 4179 h->non_got_ref = 0;
4180 return TRUE;
252b5132
RH		 4181 }
4182 }
4183
909272ee
AM		 4184 if (h->size == 0)
4185 {
4186 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4187 h->root.root.string);
4188 return TRUE;
4189 }
4190
25dbc73a
AM		 4191 /* We must allocate the symbol in our .dynbss section, which will
4192 become part of the .bss section of the executable. There will be
4193 an entry for this symbol in the .dynsym section. The dynamic
4194 object will contain position independent code, so all references
4195 from the dynamic object to this symbol will go through the global
4196 offset table. The dynamic linker will use the .dynsym entry to
4197 determine the address it must put in the global offset table, so
4198 both the dynamic object and the regular object will refer to the
4199 same memory location for the variable.
4200
4dc4a9a5
DJ		 4201 Of course, if the symbol is referenced using SDAREL relocs, we
4202 must instead allocate it in .sbss. */
25dbc73a 4203
4dc4a9a5 4204 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 4205 s = htab->dynsbss;
4206 else
4207 s = htab->dynbss;
4208 BFD_ASSERT (s != NULL);
4209
4210 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4211 copy the initial value out of the dynamic object and into the
4212 runtime process image. We need to remember the offset into the
4213 .rela.bss section we are going to use. */
4214 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4215 {
4216 asection *srel;
4217
4dc4a9a5 4218 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 4219 srel = htab->relsbss;
4220 else
4221 srel = htab->relbss;
4222 BFD_ASSERT (srel != NULL);
4223 srel->size += sizeof (Elf32_External_Rela);
4224 h->needs_copy = 1;
4225 }
7619e7c7 4226
25dbc73a
AM		 4227 /* We need to figure out the alignment required for this symbol. I
4228 have no idea how ELF linkers handle this. */
4229 power_of_two = bfd_log2 (h->size);
4230 if (power_of_two > 4)
4231 power_of_two = 4;
7619e7c7 4232
25dbc73a
AM		 4233 /* Apply the required alignment. */
4234 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4235 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4236 {
4237 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
7619e7c7 4238 return FALSE;
7619e7c7
AM		 4239 }
4240
25dbc73a
AM		 4241 /* Define the symbol as being at this point in the section. */
4242 h->root.u.def.section = s;
4243 h->root.u.def.value = s->size;
7619e7c7 4244
25dbc73a
AM		 4245 /* Increment the section size to make room for the symbol. */
4246 s->size += h->size;
7619e7c7 4247
25dbc73a
AM		 4248 return TRUE;
4249}
4250\f
ac39eb42
AM		 4251/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4252 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4253 specifying the addend on the plt relocation. For -fpic code, the sym
4254 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4255 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM		 4256
4257static bfd_boolean
4258add_stub_sym (struct plt_entry *ent,
4259 struct elf_link_hash_entry *h,
ac39eb42 4260 struct bfd_link_info *info)
0ba07910
AM		 4261{
4262 struct elf_link_hash_entry *sh;
4263 size_t len1, len2, len3;
4264 char *name;
ac39eb42
AM		 4265 const char *stub;
4266 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4267
4268 if (info->shared || info->pie)
4269 stub = ".plt_pic32.";
4270 else
4271 stub = ".plt_call32.";
0ba07910
AM		 4272
4273 len1 = strlen (h->root.root.string);
ac39eb42 4274 len2 = strlen (stub);
0ba07910
AM		 4275 len3 = 0;
4276 if (ent->sec)
4277 len3 = strlen (ent->sec->name);
ac39eb42 4278 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM		 4279 if (name == NULL)
4280 return FALSE;
4281 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4282 if (ent->sec)
4283 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM		 4284 memcpy (name + 8 + len3, stub, len2);
4285 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM		 4286 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4287 if (sh == NULL)
4288 return FALSE;
4289 if (sh->root.type == bfd_link_hash_new)
4290 {
4291 sh->root.type = bfd_link_hash_defined;
4292 sh->root.u.def.section = htab->glink;
4293 sh->root.u.def.value = ent->glink_offset;
4294 sh->ref_regular = 1;
4295 sh->def_regular = 1;
4296 sh->ref_regular_nonweak = 1;
4297 sh->forced_local = 1;
4298 sh->non_elf = 0;
4299 }
4300 return TRUE;
4301}
4302
3b36f7e6
AM		 4303/* Allocate NEED contiguous space in .got, and return the offset.
4304 Handles allocation of the got header when crossing 32k. */
4305
4306static bfd_vma
4307allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4308{
4309 bfd_vma where;
4a3dc543 4310 unsigned int max_before_header;
3b36f7e6 4311
4a3dc543 4312 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB		 4313 {
4314 where = htab->got->size;
4315 htab->got->size += need;
4316 }
3b36f7e6
AM		 4317 else
4318 {
4a3dc543
RS		 4319 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4320 if (need <= htab->got_gap)
3b36f7e6 4321 {
4a3dc543
RS		 4322 where = max_before_header - htab->got_gap;
4323 htab->got_gap -= need;
4324 }
4325 else
4326 {
4327 if (htab->got->size + need > max_before_header
4328 && htab->got->size <= max_before_header)
4329 {
4330 htab->got_gap = max_before_header - htab->got->size;
4331 htab->got->size = max_before_header + htab->got_header_size;
4332 }
4333 where = htab->got->size;
4334 htab->got->size += need;
3b36f7e6 4335 }
3b36f7e6
AM		 4336 }
4337 return where;
4338}
4339
25dbc73a 4340/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 4341
b34976b6 4342static bfd_boolean
25dbc73a 4343allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 4344{
25dbc73a
AM		 4345 struct bfd_link_info *info = inf;
4346 struct ppc_elf_link_hash_entry *eh;
7619e7c7 4347 struct ppc_elf_link_hash_table *htab;
25dbc73a 4348 struct ppc_elf_dyn_relocs *p;
252b5132 4349
25dbc73a 4350 if (h->root.type == bfd_link_hash_indirect)
b34976b6 4351 return TRUE;
252b5132 4352
25dbc73a
AM		 4353 if (h->root.type == bfd_link_hash_warning)
4354 /* When warning symbols are created, they **replace** the "real"
4355 entry in the hash table, thus we never get to see the real
4356 symbol in a hash traversal. So look at it now. */
4357 h = (struct elf_link_hash_entry *) h->root.u.i.link;
e47cd125 4358
7619e7c7 4359 htab = ppc_elf_hash_table (info);
a6aa5195 4360 if (htab->elf.dynamic_sections_created)
252b5132 4361 {
a6aa5195
AM		 4362 struct plt_entry *ent;
4363 bfd_boolean doneone = FALSE;
28e99bb6
AM		 4364 bfd_vma plt_offset = 0, glink_offset = 0;
4365
a6aa5195
AM		 4366 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4367 if (ent->plt.refcount > 0)
4368 {
4369 /* Make sure this symbol is output as a dynamic symbol. */
4370 if (h->dynindx == -1
4371 && !h->forced_local)
4372 {
4373 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4374 return FALSE;
4375 }
252b5132 4376
a6aa5195
AM		 4377 if (info->shared
4378 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4379 {
4380 asection *s = htab->plt;
7619e7c7 4381
4a3dc543 4382 if (htab->plt_type == PLT_NEW)
a6aa5195 4383 {
a6aa5195 4384 if (!doneone)
28e99bb6
AM		 4385 {
4386 plt_offset = s->size;
4387 s->size += 4;
4388 }
4389 ent->plt.offset = plt_offset;
d7128ce4 4390
a6aa5195 4391 s = htab->glink;
28e99bb6
AM		 4392 if (!doneone || info->shared || info->pie)
4393 {
4394 glink_offset = s->size;
4395 s->size += GLINK_ENTRY_SIZE;
4396 }
4397 if (!doneone
4398 && !info->shared
a6aa5195
AM		 4399 && !h->def_regular)
4400 {
4401 h->root.u.def.section = s;
28e99bb6 4402 h->root.u.def.value = glink_offset;
a6aa5195 4403 }
28e99bb6 4404 ent->glink_offset = glink_offset;
0ba07910
AM		 4405
4406 if (htab->emit_stub_syms
ac39eb42 4407 && !add_stub_sym (ent, h, info))
0ba07910 4408 return FALSE;
a6aa5195
AM		 4409 }
4410 else
4411 {
a6aa5195
AM		 4412 if (!doneone)
4413 {
28e99bb6
AM		 4414 /* If this is the first .plt entry, make room
4415 for the special first entry. */
4416 if (s->size == 0)
9d8504b1 4417 s->size += htab->plt_initial_entry_size;
28e99bb6
AM		 4418
4419 /* The PowerPC PLT is actually composed of two
4420 parts, the first part is 2 words (for a load
4421 and a jump), and then there is a remaining
4422 word available at the end. */
9d8504b1
PB		 4423 plt_offset = (htab->plt_initial_entry_size
4424 + (htab->plt_slot_size
4425 * ((s->size
4426 - htab->plt_initial_entry_size)
4427 / htab->plt_entry_size)));
28e99bb6
AM		 4428
4429 /* If this symbol is not defined in a regular
4430 file, and we are not generating a shared
4431 library, then set the symbol to this location
4432 in the .plt. This is required to make
4433 function pointers compare as equal between
4434 the normal executable and the shared library. */
4435 if (! info->shared
4436 && !h->def_regular)
4437 {
4438 h->root.u.def.section = s;
4439 h->root.u.def.value = plt_offset;
4440 }
4441
9d8504b1
PB		 4442 /* Make room for this entry. */
4443 s->size += htab->plt_entry_size;
4444 /* After the 8192nd entry, room for two entries
4445 is allocated. */
4a3dc543 4446 if (htab->plt_type == PLT_OLD
9d8504b1
PB		 4447 && (s->size - htab->plt_initial_entry_size)
4448 / htab->plt_entry_size
4449 > PLT_NUM_SINGLE_ENTRIES)
4450 s->size += htab->plt_entry_size;
a6aa5195 4451 }
28e99bb6 4452 ent->plt.offset = plt_offset;
a6aa5195 4453 }
25dbc73a 4454
a6aa5195
AM		 4455 /* We also need to make an entry in the .rela.plt section. */
4456 if (!doneone)
4457 {
4458 htab->relplt->size += sizeof (Elf32_External_Rela);
9d8504b1 4459
4a3dc543 4460 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB		 4461 {
4462 /* Allocate space for the unloaded relocations. */
4463 if (!info->shared)
4464 {
4465 if (ent->plt.offset
4466 == (bfd_vma) htab->plt_initial_entry_size)
4467 {
4468 htab->srelplt2->size
4469 += sizeof (Elf32_External_Rela)
4470 * VXWORKS_PLTRESOLVE_RELOCS;
4471 }
4472
4473 htab->srelplt2->size
4474 += sizeof (Elf32_External_Rela)
4475 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4476 }
4477
4478 /* Every PLT entry has an associated GOT entry in
4479 .got.plt. */
4480 htab->sgotplt->size += 4;
4481 }
a6aa5195
AM		 4482 doneone = TRUE;
4483 }
4484 }
4485 else
4486 ent->plt.offset = (bfd_vma) -1;
4487
4488 if (!doneone)
4489 {
4490 h->plt.plist = NULL;
4491 h->needs_plt = 0;
4492 }
4493 }
25dbc73a
AM		 4494 }
4495 else
4496 {
a6aa5195 4497 h->plt.plist = NULL;
25dbc73a
AM		 4498 h->needs_plt = 0;
4499 }
4500
4501 eh = (struct ppc_elf_link_hash_entry *) h;
4502 if (eh->elf.got.refcount > 0)
4503 {
4504 /* Make sure this symbol is output as a dynamic symbol. */
4505 if (eh->elf.dynindx == -1
4506 && !eh->elf.forced_local)
4507 {
4508 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 4509 return FALSE;
25dbc73a 4510 }
252b5132 4511
25dbc73a
AM		 4512 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4513 && !eh->elf.def_dynamic)
4514 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4515 eh->elf.got.offset = (bfd_vma) -1;
4516 else
4517 {
4518 bfd_boolean dyn;
3b36f7e6 4519 unsigned int need = 0;
25dbc73a 4520 if ((eh->tls_mask & TLS_TLS) != 0)
252b5132 4521 {
25dbc73a 4522 if ((eh->tls_mask & TLS_LD) != 0)
3b36f7e6 4523 need += 8;
25dbc73a 4524 if ((eh->tls_mask & TLS_GD) != 0)
3b36f7e6 4525 need += 8;
25dbc73a 4526 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
3b36f7e6 4527 need += 4;
25dbc73a 4528 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 4529 need += 4;
252b5132 4530 }
25dbc73a 4531 else
3b36f7e6
AM		 4532 need += 4;
4533 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM		 4534 dyn = htab->elf.dynamic_sections_created;
4535 if ((info->shared
4536 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4537 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4538 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 4539 {
3b36f7e6
AM		 4540 /* All the entries we allocated need relocs.
4541 Except LD only needs one. */
25dbc73a 4542 if ((eh->tls_mask & TLS_LD) != 0)
3b36f7e6
AM		 4543 need -= 4;
4544 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 4545 }
25dbc73a
AM		 4546 }
4547 }
4548 else
4549 eh->elf.got.offset = (bfd_vma) -1;
252b5132 4550
25dbc73a
AM		 4551 if (eh->dyn_relocs == NULL)
4552 return TRUE;
252b5132 4553
25dbc73a
AM		 4554 /* In the shared -Bsymbolic case, discard space allocated for
4555 dynamic pc-relative relocs against symbols which turn out to be
4556 defined in regular objects. For the normal shared case, discard
4557 space for relocs that have become local due to symbol visibility
4558 changes. */
4559
4560 if (info->shared)
4561 {
4562 /* Relocs that use pc_count are those that appear on a call insn,
4563 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4564 generated via assembly. We want calls to protected symbols to
4565 resolve directly to the function rather than going via the plt.
4566 If people want function pointer comparisons to work as expected
4567 then they should avoid writing weird assembly. */
4568 if (SYMBOL_CALLS_LOCAL (info, h))
4569 {
4570 struct ppc_elf_dyn_relocs **pp;
4571
4572 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 4573 {
25dbc73a
AM		 4574 p->count -= p->pc_count;
4575 p->pc_count = 0;
4576 if (p->count == 0)
4577 *pp = p->next;
4578 else
4579 pp = &p->next;
252b5132 4580 }
25dbc73a 4581 }
252b5132 4582
25dbc73a
AM		 4583 /* Also discard relocs on undefined weak syms with non-default
4584 visibility. */
cab87ef9
AM		 4585 if (eh->dyn_relocs != NULL
4586 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 4587 {
dfbb6ac9
AM		 4588 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4589 eh->dyn_relocs = NULL;
4590
4591 /* Make sure undefined weak symbols are output as a dynamic
4592 symbol in PIEs. */
4593 else if (h->dynindx == -1
4594 && !h->forced_local)
4595 {
4596 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4597 return FALSE;
4598 }
25dbc73a
AM		 4599 }
4600 }
4601 else if (ELIMINATE_COPY_RELOCS)
4602 {
4603 /* For the non-shared case, discard space for relocs against
4604 symbols which turn out to need copy relocs or are not
4605 dynamic. */
7619e7c7 4606
25dbc73a
AM		 4607 if (!h->non_got_ref
4608 && h->def_dynamic
4609 && !h->def_regular)
4610 {
4611 /* Make sure this symbol is output as a dynamic symbol.
4612 Undefined weak syms won't yet be marked as dynamic. */
4613 if (h->dynindx == -1
4614 && !h->forced_local)
4615 {
4616 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4617 return FALSE;
4618 }
7619e7c7 4619
25dbc73a
AM		 4620 /* If that succeeded, we know we'll be keeping all the
4621 relocs. */
4622 if (h->dynindx != -1)
4623 goto keep;
4624 }
252b5132 4625
25dbc73a 4626 eh->dyn_relocs = NULL;
252b5132 4627
25dbc73a
AM		 4628 keep: ;
4629 }
252b5132 4630
25dbc73a
AM		 4631 /* Finally, allocate space. */
4632 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4633 {
4634 asection *sreloc = elf_section_data (p->sec)->sreloc;
4635 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4636 }
252b5132 4637
25dbc73a
AM		 4638 return TRUE;
4639}
7619e7c7 4640
25dbc73a 4641/* Find any dynamic relocs that apply to read-only sections. */
7619e7c7 4642
25dbc73a
AM		 4643static bfd_boolean
4644readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4645{
4646 struct ppc_elf_dyn_relocs *p;
7619e7c7 4647
25dbc73a
AM		 4648 if (h->root.type == bfd_link_hash_indirect)
4649 return TRUE;
252b5132 4650
25dbc73a
AM		 4651 if (h->root.type == bfd_link_hash_warning)
4652 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 4653
25dbc73a
AM		 4654 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4655 {
4656 asection *s = p->sec->output_section;
ee05f2fe 4657
25dbc73a
AM		 4658 if (s != NULL
4659 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4660 == (SEC_READONLY | SEC_ALLOC)))
4661 {
4662 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 4663
25dbc73a
AM		 4664 /* Not an error, just cut short the traversal. */
4665 return FALSE;
4666 }
4667 }
4668 return TRUE;
4669}
4670
4671/* Set the sizes of the dynamic sections. */
4672
4673static bfd_boolean
4674ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4675 struct bfd_link_info *info)
4676{
4677 struct ppc_elf_link_hash_table *htab;
4678 asection *s;
4679 bfd_boolean relocs;
4680 bfd *ibfd;
7fce784e 4681
252b5132 4682#ifdef DEBUG
25dbc73a 4683 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 4684#endif
252b5132 4685
25dbc73a
AM		 4686 htab = ppc_elf_hash_table (info);
4687 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 4688
25dbc73a
AM		 4689 if (elf_hash_table (info)->dynamic_sections_created)
4690 {
4691 /* Set the contents of the .interp section to the interpreter. */
4692 if (info->executable)
4693 {
4694 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4695 BFD_ASSERT (s != NULL);
4696 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4697 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4698 }
4699 }
252b5132 4700
4a3dc543 4701 if (htab->plt_type == PLT_OLD)
d7128ce4 4702 htab->got_header_size = 16;
4a3dc543 4703 else if (htab->plt_type == PLT_NEW)
d7128ce4 4704 htab->got_header_size = 12;
252b5132 4705
25dbc73a
AM		 4706 /* Set up .got offsets for local syms, and space for local dynamic
4707 relocs. */
4708 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4709 {
4710 bfd_signed_vma *local_got;
4711 bfd_signed_vma *end_local_got;
4712 char *lgot_masks;
4713 bfd_size_type locsymcount;
4714 Elf_Internal_Shdr *symtab_hdr;
7fce784e 4715
d2663f46 4716 if (!is_ppc_elf_target (ibfd->xvec))
25dbc73a 4717 continue;
7fce784e 4718
25dbc73a
AM		 4719 for (s = ibfd->sections; s != NULL; s = s->next)
4720 {
4721 struct ppc_elf_dyn_relocs *p;
252b5132 4722
25dbc73a
AM		 4723 for (p = ((struct ppc_elf_dyn_relocs *)
4724 elf_section_data (s)->local_dynrel);
4725 p != NULL;
4726 p = p->next)
4727 {
4728 if (!bfd_is_abs_section (p->sec)
4729 && bfd_is_abs_section (p->sec->output_section))
4730 {
4731 /* Input section has been discarded, either because
4732 it is a copy of a linkonce section or due to
4733 linker script /DISCARD/, so we'll be discarding
4734 the relocs too. */
7fce784e 4735 }
25dbc73a 4736 else if (p->count != 0)
7fce784e 4737 {
25dbc73a
AM		 4738 elf_section_data (p->sec)->sreloc->size
4739 += p->count * sizeof (Elf32_External_Rela);
4740 if ((p->sec->output_section->flags
4741 & (SEC_READONLY | SEC_ALLOC))
4742 == (SEC_READONLY | SEC_ALLOC))
4743 info->flags |= DF_TEXTREL;
7fce784e 4744 }
252b5132 4745 }
252b5132 4746 }
252b5132 4747
25dbc73a
AM		 4748 local_got = elf_local_got_refcounts (ibfd);
4749 if (!local_got)
4750 continue;
252b5132 4751
25dbc73a
AM		 4752 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4753 locsymcount = symtab_hdr->sh_info;
4754 end_local_got = local_got + locsymcount;
4755 lgot_masks = (char *) end_local_got;
25dbc73a
AM		 4756 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4757 if (*local_got > 0)
4758 {
4759 if (*lgot_masks == (TLS_TLS | TLS_LD))
4760 {
4761 /* If just an LD reloc, we'll just use
4762 htab->tlsld_got.offset. */
3b36f7e6 4763 htab->tlsld_got.refcount += 1;
25dbc73a
AM		 4764 *local_got = (bfd_vma) -1;
4765 }
4766 else
4767 {
3b36f7e6 4768 unsigned int need = 0;
25dbc73a
AM		 4769 if ((*lgot_masks & TLS_TLS) != 0)
4770 {
4771 if ((*lgot_masks & TLS_GD) != 0)
3b36f7e6 4772 need += 8;
25dbc73a 4773 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
3b36f7e6 4774 need += 4;
25dbc73a 4775 if ((*lgot_masks & TLS_DTPREL) != 0)
3b36f7e6 4776 need += 4;
25dbc73a
AM		 4777 }
4778 else
3b36f7e6
AM		 4779 need += 4;
4780 *local_got = allocate_got (htab, need);
25dbc73a 4781 if (info->shared)
3b36f7e6
AM		 4782 htab->relgot->size += (need
4783 * (sizeof (Elf32_External_Rela) / 4));
25dbc73a
AM		 4784 }
4785 }
4786 else
4787 *local_got = (bfd_vma) -1;
4788 }
252b5132 4789
3b36f7e6
AM		 4790 if (htab->tlsld_got.refcount > 0)
4791 {
4792 htab->tlsld_got.offset = allocate_got (htab, 8);
4793 if (info->shared)
4794 htab->relgot->size += sizeof (Elf32_External_Rela);
4795 }
4796 else
4797 htab->tlsld_got.offset = (bfd_vma) -1;
4798
25dbc73a
AM		 4799 /* Allocate space for global sym dynamic relocs. */
4800 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4801
4a3dc543 4802 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM		 4803 {
4804 unsigned int g_o_t = 32768;
4805
4d962050
AM		 4806 /* If we haven't allocated the header, do so now. When we get here,
4807 for old plt/got the got size will be 0 to 32764 (not allocated),
4808 or 32780 to 65536 (header allocated). For new plt/got, the
4809 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM		 4810 if (htab->got->size <= 32768)
4811 {
4812 g_o_t = htab->got->size;
4a3dc543 4813 if (htab->plt_type == PLT_OLD)
4d962050 4814 g_o_t += 4;
3b36f7e6
AM		 4815 htab->got->size += htab->got_header_size;
4816 }
3b36f7e6
AM		 4817
4818 htab->elf.hgot->root.u.def.value = g_o_t;
4819 }
4820
d7128ce4
AM		 4821 if (htab->glink != NULL && htab->glink->size != 0)
4822 {
4823 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM		 4824 /* Space for the branch table. */
4825 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4826 /* Pad out to align the start of PLTresolve. */
4827 htab->glink->size += -htab->glink->size & 15;
d7128ce4 4828 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910
AM		 4829
4830 if (htab->emit_stub_syms)
4831 {
4832 struct elf_link_hash_entry *sh;
4833 sh = elf_link_hash_lookup (&htab->elf, "__glink",
4834 TRUE, FALSE, FALSE);
4835 if (sh == NULL)
4836 return FALSE;
4837 if (sh->root.type == bfd_link_hash_new)
4838 {
4839 sh->root.type = bfd_link_hash_defined;
4840 sh->root.u.def.section = htab->glink;
4841 sh->root.u.def.value = htab->glink_pltresolve;
4842 sh->ref_regular = 1;
4843 sh->def_regular = 1;
4844 sh->ref_regular_nonweak = 1;
4845 sh->forced_local = 1;
4846 sh->non_elf = 0;
4847 }
4848 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
4849 TRUE, FALSE, FALSE);
4850 if (sh == NULL)
4851 return FALSE;
4852 if (sh->root.type == bfd_link_hash_new)
4853 {
4854 sh->root.type = bfd_link_hash_defined;
4855 sh->root.u.def.section = htab->glink;
4856 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
4857 sh->ref_regular = 1;
4858 sh->def_regular = 1;
4859 sh->ref_regular_nonweak = 1;
4860 sh->forced_local = 1;
4861 sh->non_elf = 0;
4862 }
4863 }
d7128ce4
AM		 4864 }
4865
25dbc73a
AM		 4866 /* We've now determined the sizes of the various dynamic sections.
4867 Allocate memory for them. */
4868 relocs = FALSE;
4869 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 4870 {
9d8504b1
PB		 4871 bfd_boolean strip_section = TRUE;
4872
25dbc73a
AM		 4873 if ((s->flags & SEC_LINKER_CREATED) == 0)
4874 continue;
252b5132 4875
25dbc73a 4876 if (s == htab->plt
d7128ce4 4877 || s == htab->glink
644285ef 4878 || s == htab->got
9d8504b1 4879 || s == htab->sgotplt
c456f082
AM		 4880 || s == htab->sbss
4881 || s == htab->dynbss
4882 || s == htab->dynsbss)
25dbc73a 4883 {
9d8504b1
PB		 4884 /* We'd like to strip these sections if they aren't needed, but if
4885 we've exported dynamic symbols from them we must leave them.
4886 It's too late to tell BFD to get rid of the symbols. */
7325306f 4887 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
9d8504b1 4888 strip_section = FALSE;
25dbc73a
AM		 4889 /* Strip this section if we don't need it; see the
4890 comment below. */
4891 }
c9a2f333
AM		 4892 else if (s == htab->sdata[0].section
4893 || s == htab->sdata[1].section)
25dbc73a 4894 {
c9a2f333 4895 /* Strip these too. */
25dbc73a 4896 }
0112cd26 4897 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
25dbc73a 4898 {
c456f082 4899 if (s->size != 0)
25dbc73a
AM		 4900 {
4901 /* Remember whether there are any relocation sections. */
4902 relocs = TRUE;
252b5132 4903
25dbc73a
AM		 4904 /* We use the reloc_count field as a counter if we need
4905 to copy relocs into the output file. */
4906 s->reloc_count = 0;
252b5132
RH		 4907 }
4908 }
25dbc73a
AM		 4909 else
4910 {
4911 /* It's not one of our sections, so don't allocate space. */
4912 continue;
4913 }
252b5132 4914
9d8504b1 4915 if (s->size == 0 && strip_section)
25dbc73a 4916 {
c456f082
AM		 4917 /* If we don't need this section, strip it from the
4918 output file. This is mostly to handle .rela.bss and
4919 .rela.plt. We must create both sections in
4920 create_dynamic_sections, because they must be created
4921 before the linker maps input sections to output
4922 sections. The linker does that before
4923 adjust_dynamic_symbol is called, and it is that
4924 function which decides whether anything needs to go
4925 into these sections. */
8423293d 4926 s->flags |= SEC_EXCLUDE;
25dbc73a
AM		 4927 continue;
4928 }
7fce784e 4929
d7128ce4 4930 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM		 4931 continue;
4932
25dbc73a
AM		 4933 /* Allocate memory for the section contents. */
4934 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4935 if (s->contents == NULL)
4936 return FALSE;
4937 }
252b5132 4938
25dbc73a 4939 if (htab->elf.dynamic_sections_created)
7619e7c7 4940 {
25dbc73a
AM		 4941 /* Add some entries to the .dynamic section. We fill in the
4942 values later, in ppc_elf_finish_dynamic_sections, but we
4943 must add the entries now so that we get the correct size for
4944 the .dynamic section. The DT_DEBUG entry is filled in by the
4945 dynamic linker and used by the debugger. */
4946#define add_dynamic_entry(TAG, VAL) \
4947 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 4948
25dbc73a 4949 if (info->executable)
7619e7c7 4950 {
25dbc73a
AM		 4951 if (!add_dynamic_entry (DT_DEBUG, 0))
4952 return FALSE;
7619e7c7
AM		 4953 }
4954
25dbc73a 4955 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 4956 {
25dbc73a
AM		 4957 if (!add_dynamic_entry (DT_PLTGOT, 0)
4958 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4959 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4960 || !add_dynamic_entry (DT_JMPREL, 0))
4961 return FALSE;
4962 }
7619e7c7 4963
d7128ce4
AM		 4964 if (htab->glink != NULL && htab->glink->size != 0)
4965 {
1fe44d79 4966 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4
AM		 4967 return FALSE;
4968 }
4969
25dbc73a
AM		 4970 if (relocs)
4971 {
4972 if (!add_dynamic_entry (DT_RELA, 0)
4973 || !add_dynamic_entry (DT_RELASZ, 0)
4974 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4975 return FALSE;
4976 }
7619e7c7 4977
25dbc73a
AM		 4978 /* If any dynamic relocs apply to a read-only section, then we
4979 need a DT_TEXTREL entry. */
4980 if ((info->flags & DF_TEXTREL) == 0)
4981 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4982 info);
7619e7c7 4983
25dbc73a
AM		 4984 if ((info->flags & DF_TEXTREL) != 0)
4985 {
4986 if (!add_dynamic_entry (DT_TEXTREL, 0))
4987 return FALSE;
7619e7c7
AM		 4988 }
4989 }
25dbc73a
AM		 4990#undef add_dynamic_entry
4991
7619e7c7
AM		 4992 return TRUE;
4993}
25dbc73a
AM		 4994\f
4995#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4996
4997static const int shared_stub_entry[] =
4998 {
4999 0x7c0802a6, /* mflr 0 */
5000 0x429f0005, /* bcl 20, 31, .Lxxx */
5001 0x7d6802a6, /* mflr 11 */
5002 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5003 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5004 0x7c0803a6, /* mtlr 0 */
5005 0x7d6903a6, /* mtctr 11 */
5006 0x4e800420, /* bctr */
5007 };
5008
5009static const int stub_entry[] =
5010 {
5011 0x3d600000, /* lis 11,xxx@ha */
5012 0x396b0000, /* addi 11,11,xxx@l */
5013 0x7d6903a6, /* mtctr 11 */
5014 0x4e800420, /* bctr */
5015 };
5016
5017static bfd_boolean
5018ppc_elf_relax_section (bfd *abfd,
5019 asection *isec,
5020 struct bfd_link_info *link_info,
5021 bfd_boolean *again)
5022{
5023 struct one_fixup
5024 {
5025 struct one_fixup *next;
5026 asection *tsec;
5027 bfd_vma toff;
5028 bfd_vma trampoff;
5029 };
7619e7c7 5030
25dbc73a
AM		 5031 Elf_Internal_Shdr *symtab_hdr;
5032 bfd_byte *contents = NULL;
5033 Elf_Internal_Sym *isymbuf = NULL;
5034 Elf_Internal_Rela *internal_relocs = NULL;
5035 Elf_Internal_Rela *irel, *irelend;
5036 struct one_fixup *fixups = NULL;
5037 bfd_boolean changed;
d7128ce4 5038 struct ppc_elf_link_hash_table *htab;
25dbc73a 5039 bfd_size_type trampoff;
a6aa5195 5040 asection *got2;
7619e7c7 5041
25dbc73a 5042 *again = FALSE;
7619e7c7 5043
c87b5a93
AM		 5044 /* Nothing to do if there are no relocations, and no need to do
5045 anything with non-alloc sections. */
5046 if ((isec->flags & SEC_ALLOC) == 0
5047 || (isec->flags & SEC_RELOC) == 0
5048 || isec->reloc_count == 0)
25dbc73a 5049 return TRUE;
7619e7c7 5050
25dbc73a
AM		 5051 trampoff = (isec->size + 3) & (bfd_vma) -4;
5052 /* Space for a branch around any trampolines. */
5053 trampoff += 4;
7619e7c7 5054
25dbc73a 5055 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7619e7c7 5056
25dbc73a
AM		 5057 /* Get a copy of the native relocations. */
5058 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5059 link_info->keep_memory);
5060 if (internal_relocs == NULL)
5061 goto error_return;
7619e7c7 5062
d7128ce4 5063 htab = ppc_elf_hash_table (link_info);
a6aa5195 5064 got2 = bfd_get_section_by_name (abfd, ".got2");
7619e7c7 5065
a6aa5195 5066 irelend = internal_relocs + isec->reloc_count;
25dbc73a 5067 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 5068 {
25dbc73a
AM		 5069 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5070 bfd_vma symaddr, reladdr, toff, roff;
5071 asection *tsec;
5072 struct one_fixup *f;
5073 size_t insn_offset = 0;
5074 bfd_vma max_branch_offset, val;
5075 bfd_byte *hit_addr;
5076 unsigned long t0;
5077 unsigned char sym_type;
7619e7c7 5078
25dbc73a
AM		 5079 switch (r_type)
5080 {
5081 case R_PPC_REL24:
5082 case R_PPC_LOCAL24PC:
5083 case R_PPC_PLTREL24:
5084 max_branch_offset = 1 << 25;
5085 break;
7619e7c7 5086
25dbc73a
AM		 5087 case R_PPC_REL14:
5088 case R_PPC_REL14_BRTAKEN:
5089 case R_PPC_REL14_BRNTAKEN:
5090 max_branch_offset = 1 << 15;
5091 break;
7619e7c7 5092
25dbc73a
AM		 5093 default:
5094 continue;
5095 }
7619e7c7 5096
25dbc73a
AM		 5097 /* Get the value of the symbol referred to by the reloc. */
5098 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5099 {
5100 /* A local symbol. */
5101 Elf_Internal_Sym *isym;
7fce784e 5102
25dbc73a
AM		 5103 /* Read this BFD's local symbols. */
5104 if (isymbuf == NULL)
5105 {
5106 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5107 if (isymbuf == NULL)
5108 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5109 symtab_hdr->sh_info, 0,
5110 NULL, NULL, NULL);
5111 if (isymbuf == 0)
5112 goto error_return;
5113 }
5114 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5115 if (isym->st_shndx == SHN_UNDEF)
5116 continue; /* We can't do anything with undefined symbols. */
5117 else if (isym->st_shndx == SHN_ABS)
5118 tsec = bfd_abs_section_ptr;
5119 else if (isym->st_shndx == SHN_COMMON)
5120 tsec = bfd_com_section_ptr;
5121 else
5122 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 5123
25dbc73a
AM		 5124 toff = isym->st_value;
5125 sym_type = ELF_ST_TYPE (isym->st_info);
5126 }
5127 else
5128 {
5129 /* Global symbol handling. */
5130 unsigned long indx;
5131 struct elf_link_hash_entry *h;
7619e7c7 5132
25dbc73a
AM		 5133 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5134 h = elf_sym_hashes (abfd)[indx];
7619e7c7 5135
25dbc73a
AM		 5136 while (h->root.type == bfd_link_hash_indirect
5137 || h->root.type == bfd_link_hash_warning)
5138 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5139
a6aa5195
AM		 5140 tsec = NULL;
5141 toff = 0;
25dbc73a 5142 if (r_type == R_PPC_PLTREL24
a6aa5195 5143 && htab->plt != NULL)
25dbc73a 5144 {
a6aa5195
AM		 5145 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5146
5147 if (ent != NULL)
d7128ce4 5148 {
4a3dc543 5149 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 5150 {
5151 tsec = htab->glink;
5152 toff = ent->glink_offset;
5153 }
5154 else
5155 {
5156 tsec = htab->plt;
5157 toff = ent->plt.offset;
5158 }
d7128ce4 5159 }
25dbc73a 5160 }
a6aa5195
AM		 5161 if (tsec != NULL)
5162 ;
25dbc73a
AM		 5163 else if (h->root.type == bfd_link_hash_defined
5164 || h->root.type == bfd_link_hash_defweak)
5165 {
5166 tsec = h->root.u.def.section;
5167 toff = h->root.u.def.value;
5168 }
5169 else
5170 continue;
7619e7c7 5171
25dbc73a
AM		 5172 sym_type = h->type;
5173 }
7619e7c7 5174
25dbc73a
AM		 5175 /* If the branch and target are in the same section, you have
5176 no hope of adding stubs. We'll error out later should the
5177 branch overflow. */
5178 if (tsec == isec)
5179 continue;
5180
5181 /* There probably isn't any reason to handle symbols in
5182 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5183 attribute for a code section, and we are only looking at
5184 branches. However, implement it correctly here as a
5185 reference for other target relax_section functions. */
5186 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5187 {
5188 /* At this stage in linking, no SEC_MERGE symbol has been
5189 adjusted, so all references to such symbols need to be
5190 passed through _bfd_merged_section_offset. (Later, in
5191 relocate_section, all SEC_MERGE symbols *except* for
5192 section symbols have been adjusted.)
5193
5194 gas may reduce relocations against symbols in SEC_MERGE
5195 sections to a relocation against the section symbol when
5196 the original addend was zero. When the reloc is against
5197 a section symbol we should include the addend in the
5198 offset passed to _bfd_merged_section_offset, since the
5199 location of interest is the original symbol. On the
5200 other hand, an access to "sym+addend" where "sym" is not
5201 a section symbol should not include the addend; Such an
5202 access is presumed to be an offset from "sym"; The
5203 location of interest is just "sym". */
5204 if (sym_type == STT_SECTION)
5205 toff += irel->r_addend;
7619e7c7 5206
25dbc73a
AM		 5207 toff = _bfd_merged_section_offset (abfd, &tsec,
5208 elf_section_data (tsec)->sec_info,
5209 toff);
7619e7c7 5210
25dbc73a
AM		 5211 if (sym_type != STT_SECTION)
5212 toff += irel->r_addend;
5213 }
a6aa5195
AM		 5214 /* PLTREL24 addends are special. */
5215 else if (r_type != R_PPC_PLTREL24)
25dbc73a 5216 toff += irel->r_addend;
7619e7c7 5217
7de713b9
AM		 5218 /* Attempted -shared link of non-pic code loses. */
5219 if (tsec->output_section == NULL)
5220 continue;
5221
25dbc73a 5222 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7619e7c7 5223
25dbc73a
AM		 5224 roff = irel->r_offset;
5225 reladdr = isec->output_section->vma + isec->output_offset + roff;
7619e7c7 5226
25dbc73a
AM		 5227 /* If the branch is in range, no need to do anything. */
5228 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5229 continue;
252b5132 5230
25dbc73a
AM		 5231 /* Look for an existing fixup to this address. */
5232 for (f = fixups; f ; f = f->next)
5233 if (f->tsec == tsec && f->toff == toff)
5234 break;
5235
5236 if (f == NULL)
7619e7c7 5237 {
25dbc73a
AM		 5238 size_t size;
5239 unsigned long stub_rtype;
252b5132 5240
25dbc73a
AM		 5241 val = trampoff - roff;
5242 if (val >= max_branch_offset)
5243 /* Oh dear, we can't reach a trampoline. Don't try to add
5244 one. We'll report an error later. */
5245 continue;
252b5132 5246
25dbc73a
AM		 5247 if (link_info->shared)
5248 {
5249 size = 4 * ARRAY_SIZE (shared_stub_entry);
5250 insn_offset = 12;
5251 stub_rtype = R_PPC_RELAX32PC;
5252 }
5253 else
5254 {
5255 size = 4 * ARRAY_SIZE (stub_entry);
5256 insn_offset = 0;
5257 stub_rtype = R_PPC_RELAX32;
5258 }
dc810e39 5259
25dbc73a
AM		 5260 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5261 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5262 abort ();
d7128ce4
AM		 5263 if (tsec == htab->plt
5264 || tsec == htab->glink)
25dbc73a 5265 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
252b5132 5266
25dbc73a
AM		 5267 /* Hijack the old relocation. Since we need two
5268 relocations for this use a "composite" reloc. */
5269 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5270 stub_rtype);
5271 irel->r_offset = trampoff + insn_offset;
252b5132 5272
25dbc73a
AM		 5273 /* Record the fixup so we don't do it again this section. */
5274 f = bfd_malloc (sizeof (*f));
5275 f->next = fixups;
5276 f->tsec = tsec;
5277 f->toff = toff;
5278 f->trampoff = trampoff;
5279 fixups = f;
252b5132 5280
25dbc73a
AM		 5281 trampoff += size;
5282 }
5283 else
5284 {
5285 val = f->trampoff - roff;
5286 if (val >= max_branch_offset)
5287 continue;
252b5132 5288
25dbc73a
AM		 5289 /* Nop out the reloc, since we're finalizing things here. */
5290 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5291 }
252b5132 5292
25dbc73a
AM		 5293 /* Get the section contents. */
5294 if (contents == NULL)
5295 {
5296 /* Get cached copy if it exists. */
5297 if (elf_section_data (isec)->this_hdr.contents != NULL)
5298 contents = elf_section_data (isec)->this_hdr.contents;
5299 else
5300 {
5301 /* Go get them off disk. */
5302 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5303 goto error_return;
5304 }
5305 }
252b5132 5306
25dbc73a
AM		 5307 /* Fix up the existing branch to hit the trampoline. */
5308 hit_addr = contents + roff;
5309 switch (r_type)
5310 {
5311 case R_PPC_REL24:
5312 case R_PPC_LOCAL24PC:
5313 case R_PPC_PLTREL24:
5314 t0 = bfd_get_32 (abfd, hit_addr);
5315 t0 &= ~0x3fffffc;
5316 t0 |= val & 0x3fffffc;
5317 bfd_put_32 (abfd, t0, hit_addr);
5318 break;
252b5132 5319
25dbc73a
AM		 5320 case R_PPC_REL14:
5321 case R_PPC_REL14_BRTAKEN:
5322 case R_PPC_REL14_BRNTAKEN:
5323 t0 = bfd_get_32 (abfd, hit_addr);
5324 t0 &= ~0xfffc;
5325 t0 |= val & 0xfffc;
5326 bfd_put_32 (abfd, t0, hit_addr);
5327 break;
5328 }
5329 }
252b5132 5330
25dbc73a
AM		 5331 /* Write out the trampolines. */
5332 changed = fixups != NULL;
5333 if (fixups != NULL)
5334 {
5335 const int *stub;
5336 bfd_byte *dest;
5337 bfd_vma val;
5338 int i, size;
252b5132 5339
25dbc73a
AM		 5340 do
5341 {
5342 struct one_fixup *f = fixups;
5343 fixups = fixups->next;
5344 free (f);
5345 }
5346 while (fixups);
252b5132 5347
25dbc73a
AM		 5348 contents = bfd_realloc (contents, trampoff);
5349 if (contents == NULL)
5350 goto error_return;
252b5132 5351
25dbc73a
AM		 5352 isec->size = (isec->size + 3) & (bfd_vma) -4;
5353 /* Branch around the trampolines. */
5354 val = trampoff - isec->size + 0x48000000;
5355 dest = contents + isec->size;
5356 isec->size = trampoff;
5357 bfd_put_32 (abfd, val, dest);
5358 dest += 4;
252b5132 5359
25dbc73a
AM		 5360 if (link_info->shared)
5361 {
5362 stub = shared_stub_entry;
5363 size = ARRAY_SIZE (shared_stub_entry);
5364 }
5365 else
5366 {
5367 stub = stub_entry;
5368 size = ARRAY_SIZE (stub_entry);
5369 }
252b5132 5370
25dbc73a
AM		 5371 i = 0;
5372 while (dest < contents + trampoff)
252b5132 5373 {
25dbc73a
AM		 5374 bfd_put_32 (abfd, stub[i], dest);
5375 i++;
5376 if (i == size)
5377 i = 0;
5378 dest += 4;
252b5132 5379 }
25dbc73a 5380 BFD_ASSERT (i == 0);
252b5132
RH		 5381 }
5382
25dbc73a
AM		 5383 if (isymbuf != NULL
5384 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 5385 {
25dbc73a
AM		 5386 if (! link_info->keep_memory)
5387 free (isymbuf);
252b5132 5388 else
25dbc73a
AM		 5389 {
5390 /* Cache the symbols for elf_link_input_bfd. */
5391 symtab_hdr->contents = (unsigned char *) isymbuf;
5392 }
252b5132
RH		 5393 }
5394
25dbc73a
AM		 5395 if (contents != NULL
5396 && elf_section_data (isec)->this_hdr.contents != contents)
5397 {
5398 if (!changed && !link_info->keep_memory)
5399 free (contents);
5400 else
5401 {
5402 /* Cache the section contents for elf_link_input_bfd. */
5403 elf_section_data (isec)->this_hdr.contents = contents;
5404 }
5405 }
252b5132 5406
25dbc73a
AM		 5407 if (elf_section_data (isec)->relocs != internal_relocs)
5408 {
5409 if (!changed)
5410 free (internal_relocs);
5411 else
5412 elf_section_data (isec)->relocs = internal_relocs;
5413 }
252b5132 5414
25dbc73a 5415 *again = changed;
b34976b6 5416 return TRUE;
25dbc73a
AM		 5417
5418 error_return:
5419 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5420 free (isymbuf);
5421 if (contents != NULL
5422 && elf_section_data (isec)->this_hdr.contents != contents)
5423 free (contents);
5424 if (internal_relocs != NULL
5425 && elf_section_data (isec)->relocs != internal_relocs)
5426 free (internal_relocs);
5427 return FALSE;
252b5132 5428}
252b5132 5429\f
8a696751
AM		 5430/* What to do when ld finds relocations against symbols defined in
5431 discarded sections. */
5432
5433static unsigned int
5434ppc_elf_action_discarded (asection *sec)
5435{
5436 if (strcmp (".fixup", sec->name) == 0)
5437 return 0;
5438
5439 if (strcmp (".got2", sec->name) == 0)
5440 return 0;
5441
5442 return _bfd_elf_default_action_discarded (sec);
5443}
c9a2f333 5444\f
25dbc73a 5445/* Fill in the address for a pointer generated in a linker section. */
252b5132 5446
25dbc73a 5447static bfd_vma
76750a2f 5448elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM		 5449 elf_linker_section_t *lsect,
5450 struct elf_link_hash_entry *h,
5451 bfd_vma relocation,
2bb04cf2 5452 const Elf_Internal_Rela *rel)
25dbc73a
AM		 5453{
5454 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 5455
25dbc73a 5456 BFD_ASSERT (lsect != NULL);
252b5132 5457
25dbc73a 5458 if (h != NULL)
252b5132 5459 {
25dbc73a
AM		 5460 /* Handle global symbol. */
5461 struct ppc_elf_link_hash_entry *eh;
252b5132 5462
25dbc73a 5463 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM		 5464 BFD_ASSERT (eh->elf.def_regular);
5465 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM		 5466 }
5467 else
5468 {
5469 /* Handle local symbol. */
5470 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 5471
25dbc73a 5472 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM		 5473 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5474 }
252b5132 5475
76750a2f
AM		 5476 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5477 rel->r_addend,
5478 lsect);
5479 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 5480
76750a2f
AM		 5481 /* Offset will always be a multiple of four, so use the bottom bit
5482 as a "written" flag. */
5483 if ((linker_section_ptr->offset & 1) == 0)
5484 {
5485 bfd_put_32 (lsect->section->owner,
5486 relocation + linker_section_ptr->addend,
5487 lsect->section->contents + linker_section_ptr->offset);
5488 linker_section_ptr->offset += 1;
252b5132
RH		 5489 }
5490
25dbc73a 5491 relocation = (lsect->section->output_offset
76750a2f 5492 + linker_section_ptr->offset - 1
c9a2f333 5493 - 0x8000);
252b5132 5494
25dbc73a
AM		 5495#ifdef DEBUG
5496 fprintf (stderr,
5497 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5498 lsect->name, (long) relocation, (long) relocation);
5499#endif
252b5132 5500
25dbc73a
AM		 5501 /* Subtract out the addend, because it will get added back in by the normal
5502 processing. */
5503 return relocation - linker_section_ptr->addend;
252b5132 5504}
25dbc73a 5505
252b5132
RH		 5506/* The RELOCATE_SECTION function is called by the ELF backend linker
5507 to handle the relocations for a section.
5508
5509 The relocs are always passed as Rela structures; if the section
5510 actually uses Rel structures, the r_addend field will always be
5511 zero.
5512
5513 This function is responsible for adjust the section contents as
5514 necessary, and (if using Rela relocs and generating a
1049f94e 5515 relocatable output file) adjusting the reloc addend as
252b5132
RH		 5516 necessary.
5517
5518 This function does not have to worry about setting the reloc
5519 address or the reloc symbol index.
5520
5521 LOCAL_SYMS is a pointer to the swapped in local symbols.
5522
5523 LOCAL_SECTIONS is an array giving the section in the input file
5524 corresponding to the st_shndx field of each local symbol.
5525
5526 The global hash table entry for the global symbols can be found
5527 via elf_sym_hashes (input_bfd).
5528
1049f94e 5529 When generating relocatable output, this function must handle
252b5132
RH		 5530 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5531 going to be the section symbol corresponding to the output
5532 section, which means that the addend must be adjusted
5533 accordingly. */
5534
b34976b6 5535static bfd_boolean
55fd94b0
AM		 5536ppc_elf_relocate_section (bfd *output_bfd,
5537 struct bfd_link_info *info,
5538 bfd *input_bfd,
5539 asection *input_section,
5540 bfd_byte *contents,
5541 Elf_Internal_Rela *relocs,
5542 Elf_Internal_Sym *local_syms,
5543 asection **local_sections)
252b5132 5544{
7619e7c7
AM		 5545 Elf_Internal_Shdr *symtab_hdr;
5546 struct elf_link_hash_entry **sym_hashes;
5547 struct ppc_elf_link_hash_table *htab;
5548 Elf_Internal_Rela *rel;
5549 Elf_Internal_Rela *relend;
5550 Elf_Internal_Rela outrel;
5551 bfd_byte *loc;
a6aa5195 5552 asection *got2, *sreloc = NULL;
252b5132 5553 bfd_vma *local_got_offsets;
b34976b6 5554 bfd_boolean ret = TRUE;
4fe5ca5b 5555 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
b34976b6 5556
252b5132 5557#ifdef DEBUG
d003868e
AM		 5558 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5559 "%ld relocations%s",
5560 input_bfd, input_section,
5561 (long) input_section->reloc_count,
5562 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH		 5563#endif
5564
a6aa5195
AM		 5565 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5566
1049f94e 5567 if (info->relocatable)
a6aa5195
AM		 5568 {
5569 if (got2 == NULL)
5570 return TRUE;
5571
5572 rel = relocs;
5573 relend = relocs + input_section->reloc_count;
5574 for (; rel < relend; rel++)
5575 {
5576 enum elf_ppc_reloc_type r_type;
5577
5578 r_type = ELF32_R_TYPE (rel->r_info);
5579 if (r_type == R_PPC_PLTREL24
5580 && rel->r_addend >= 32768)
5581 {
5582 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5583 addend specifies the GOT pointer offset within .got2. */
5584 rel->r_addend += got2->output_offset;
5585 }
5586 }
5587 return TRUE;
5588 }
b491616a 5589
e47cd125 5590 /* Initialize howto table if not already done. */
8da6118f 5591 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH		 5592 ppc_elf_howto_init ();
5593
7619e7c7 5594 htab = ppc_elf_hash_table (info);
252b5132 5595 local_got_offsets = elf_local_got_offsets (input_bfd);
7619e7c7
AM		 5596 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5597 sym_hashes = elf_sym_hashes (input_bfd);
5598 rel = relocs;
5599 relend = relocs + input_section->reloc_count;
252b5132
RH		 5600 for (; rel < relend; rel++)
5601 {
7619e7c7
AM		 5602 enum elf_ppc_reloc_type r_type;
5603 bfd_vma addend;
5604 bfd_reloc_status_type r;
5605 Elf_Internal_Sym *sym;
5606 asection *sec;
5607 struct elf_link_hash_entry *h;
5608 const char *sym_name;
252b5132
RH		 5609 reloc_howto_type *howto;
5610 unsigned long r_symndx;
5611 bfd_vma relocation;
7619e7c7 5612 bfd_vma branch_bit, insn, from;
7619e7c7
AM		 5613 bfd_boolean unresolved_reloc;
5614 bfd_boolean warned;
5615 unsigned int tls_type, tls_mask, tls_gd;
5616
55fd94b0
AM		 5617 r_type = ELF32_R_TYPE (rel->r_info);
5618 sym = NULL;
5619 sec = NULL;
5620 h = NULL;
7619e7c7
AM		 5621 unresolved_reloc = FALSE;
5622 warned = FALSE;
252b5132 5623 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 5624
252b5132
RH		 5625 if (r_symndx < symtab_hdr->sh_info)
5626 {
5627 sym = local_syms + r_symndx;
5628 sec = local_sections[r_symndx];
26c61ae5 5629 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 5630
8517fae7 5631 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 5632 }
5633 else
5634 {
b2a8e766
AM		 5635 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5636 r_symndx, symtab_hdr, sym_hashes,
5637 h, sec, relocation,
5638 unresolved_reloc, warned);
9abc968f 5639
252b5132 5640 sym_name = h->root.root.string;
7619e7c7
AM		 5641 }
5642
5643 /* TLS optimizations. Replace instruction sequences and relocs
5644 based on information we collected in tls_optimize. We edit
5645 RELOCS so that --emit-relocs will output something sensible
5646 for the final instruction stream. */
5647 tls_mask = 0;
5648 tls_gd = 0;
5649 if (IS_PPC_TLS_RELOC (r_type))
5650 {
5651 if (h != NULL)
5652 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5653 else if (local_got_offsets != NULL)
5654 {
5655 char *lgot_masks;
5656 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5657 tls_mask = lgot_masks[r_symndx];
5658 }
5659 }
5660
5661 /* Ensure reloc mapping code below stays sane. */
5662 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5663 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5664 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5665 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5666 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5667 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5668 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5669 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5670 abort ();
5671 switch (r_type)
5672 {
5673 default:
5674 break;
5675
5676 case R_PPC_GOT_TPREL16:
5677 case R_PPC_GOT_TPREL16_LO:
5678 if (tls_mask != 0
5679 && (tls_mask & TLS_TPREL) == 0)
5680 {
5681 bfd_vma insn;
4fe5ca5b 5682 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7619e7c7
AM		 5683 insn &= 31 << 21;
5684 insn |= 0x3c020000; /* addis 0,2,0 */
4fe5ca5b 5685 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7619e7c7
AM		 5686 r_type = R_PPC_TPREL16_HA;
5687 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5688 }
5689 break;
5690
5691 case R_PPC_TLS:
5692 if (tls_mask != 0
5693 && (tls_mask & TLS_TPREL) == 0)
5694 {
5695 bfd_vma insn, rtra;
5696 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5697 if ((insn & ((31 << 26) | (31 << 11)))
5698 == ((31 << 26) | (2 << 11)))
5699 rtra = insn & ((1 << 26) - (1 << 16));
5700 else if ((insn & ((31 << 26) | (31 << 16)))
5701 == ((31 << 26) | (2 << 16)))
5702 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5703 else
5704 abort ();
5705 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5706 /* add -> addi. */
5707 insn = 14 << 26;
5708 else if ((insn & (31 << 1)) == 23 << 1
5709 && ((insn & (31 << 6)) < 14 << 6
5710 || ((insn & (31 << 6)) >= 16 << 6
5711 && (insn & (31 << 6)) < 24 << 6)))
5712 /* load and store indexed -> dform. */
5713 insn = (32 | ((insn >> 6) & 31)) << 26;
5714 else if ((insn & (31 << 1)) == 21 << 1
5715 && (insn & (0x1a << 6)) == 0)
5716 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5717 insn = (((58 | ((insn >> 6) & 4)) << 26)
5718 | ((insn >> 6) & 1));
5719 else if ((insn & (31 << 1)) == 21 << 1
5720 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5721 /* lwax -> lwa. */
5722 insn = (58 << 26) | 2;
5723 else
5724 abort ();
5725 insn |= rtra;
5726 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5727 r_type = R_PPC_TPREL16_LO;
5728 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 5729
7619e7c7 5730 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM		 5731 PPC_TPREL16_LO which is at low-order half-word. */
5732 rel->r_offset += d_offset;
7619e7c7
AM		 5733 }
5734 break;
5735
5736 case R_PPC_GOT_TLSGD16_HI:
5737 case R_PPC_GOT_TLSGD16_HA:
5738 tls_gd = TLS_TPRELGD;
5739 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5740 goto tls_gdld_hi;
5741 break;
5742
5743 case R_PPC_GOT_TLSLD16_HI:
5744 case R_PPC_GOT_TLSLD16_HA:
5745 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5746 {
5747 tls_gdld_hi:
5748 if ((tls_mask & tls_gd) != 0)
5749 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5750 + R_PPC_GOT_TPREL16);
5751 else
5752 {
5753 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 5754 rel->r_offset -= d_offset;
7619e7c7
AM		 5755 r_type = R_PPC_NONE;
5756 }
5757 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5758 }
5759 break;
5760
5761 case R_PPC_GOT_TLSGD16:
5762 case R_PPC_GOT_TLSGD16_LO:
5763 tls_gd = TLS_TPRELGD;
5764 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5765 goto tls_get_addr_check;
5766 break;
5767
5768 case R_PPC_GOT_TLSLD16:
5769 case R_PPC_GOT_TLSLD16_LO:
5770 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5771 {
5772 tls_get_addr_check:
5773 if (rel + 1 < relend)
5774 {
5775 enum elf_ppc_reloc_type r_type2;
5776 unsigned long r_symndx2;
5777 struct elf_link_hash_entry *h2;
87d243f1 5778 bfd_vma insn1, insn2;
7619e7c7
AM		 5779 bfd_vma offset;
5780
5781 /* The next instruction should be a call to
5782 __tls_get_addr. Peek at the reloc to be sure. */
55fd94b0 5783 r_type2 = ELF32_R_TYPE (rel[1].r_info);
7619e7c7
AM		 5784 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5785 if (r_symndx2 < symtab_hdr->sh_info
5786 || (r_type2 != R_PPC_REL14
5787 && r_type2 != R_PPC_REL14_BRTAKEN
5788 && r_type2 != R_PPC_REL14_BRNTAKEN
5789 && r_type2 != R_PPC_REL24
5790 && r_type2 != R_PPC_PLTREL24))
5791 break;
5792
5793 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5794 while (h2->root.type == bfd_link_hash_indirect
5795 || h2->root.type == bfd_link_hash_warning)
5796 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5797 if (h2 == NULL || h2 != htab->tls_get_addr)
5798 break;
5799
5800 /* OK, it checks out. Replace the call. */
5801 offset = rel[1].r_offset;
5802 insn1 = bfd_get_32 (output_bfd,
4fe5ca5b 5803 contents + rel->r_offset - d_offset);
7619e7c7
AM		 5804 if ((tls_mask & tls_gd) != 0)
5805 {
5806 /* IE */
5807 insn1 &= (1 << 26) - 1;
5808 insn1 |= 32 << 26; /* lwz */
5809 insn2 = 0x7c631214; /* add 3,3,2 */
5810 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
e1710606 5811 rel[1].r_addend = 0;
7619e7c7
AM		 5812 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5813 + R_PPC_GOT_TPREL16);
5814 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5815 }
5816 else
5817 {
5818 /* LE */
5819 insn1 = 0x3c620000; /* addis 3,2,0 */
5820 insn2 = 0x38630000; /* addi 3,3,0 */
5821 if (tls_gd == 0)
5822 {
5823 /* Was an LD reloc. */
5824 r_symndx = 0;
e1918d23 5825 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 5826 }
5827 r_type = R_PPC_TPREL16_HA;
5828 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5829 rel[1].r_info = ELF32_R_INFO (r_symndx,
5830 R_PPC_TPREL16_LO);
4fe5ca5b 5831 rel[1].r_offset += d_offset;
e1710606 5832 rel[1].r_addend = rel->r_addend;
7619e7c7 5833 }
4fe5ca5b 5834 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset);
7619e7c7 5835 bfd_put_32 (output_bfd, insn2, contents + offset);
7619e7c7
AM		 5836 if (tls_gd == 0)
5837 {
5838 /* We changed the symbol on an LD reloc. Start over
70bccea4 5839 in order to get h, sym, sec etc. right. */
7619e7c7
AM		 5840 rel--;
5841 continue;
5842 }
5843 }
252b5132 5844 }
7619e7c7
AM		 5845 break;
5846 }
5847
5848 /* Handle other relocations that tweak non-addend part of insn. */
5849 branch_bit = 0;
5850 switch (r_type)
5851 {
5852 default:
5853 break;
5854
5855 /* Branch taken prediction relocations. */
5856 case R_PPC_ADDR14_BRTAKEN:
5857 case R_PPC_REL14_BRTAKEN:
5858 branch_bit = BRANCH_PREDICT_BIT;
5859 /* Fall thru */
5860
4cc11e76 5861 /* Branch not taken prediction relocations. */
7619e7c7
AM		 5862 case R_PPC_ADDR14_BRNTAKEN:
5863 case R_PPC_REL14_BRNTAKEN:
5864 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5865 insn &= ~BRANCH_PREDICT_BIT;
5866 insn |= branch_bit;
5867
5868 from = (rel->r_offset
5869 + input_section->output_offset
5870 + input_section->output_section->vma);
5871
5872 /* Invert 'y' bit if not the default. */
5873 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5874 insn ^= BRANCH_PREDICT_BIT;
5875
5876 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5877 break;
252b5132
RH		 5878 }
5879
7619e7c7
AM		 5880 addend = rel->r_addend;
5881 tls_type = 0;
5882 howto = NULL;
55fd94b0
AM		 5883 if (r_type < R_PPC_max)
5884 howto = ppc_elf_howto_table[r_type];
7619e7c7 5885 switch (r_type)
252b5132
RH		 5886 {
5887 default:
7619e7c7 5888 (*_bfd_error_handler)
d003868e
AM		 5889 (_("%B: unknown relocation type %d for symbol %s"),
5890 input_bfd, (int) r_type, sym_name);
252b5132
RH		 5891
5892 bfd_set_error (bfd_error_bad_value);
b34976b6 5893 ret = FALSE;
252b5132
RH		 5894 continue;
5895
7619e7c7
AM		 5896 case R_PPC_NONE:
5897 case R_PPC_TLS:
5898 case R_PPC_EMB_MRKREF:
5899 case R_PPC_GNU_VTINHERIT:
5900 case R_PPC_GNU_VTENTRY:
7595d193
L		 5901 continue;
5902
7619e7c7
AM		 5903 /* GOT16 relocations. Like an ADDR16 using the symbol's
5904 address in the GOT as relocation value instead of the
5905 symbol's value itself. Also, create a GOT entry for the
5906 symbol and put the symbol value there. */
5907 case R_PPC_GOT_TLSGD16:
5908 case R_PPC_GOT_TLSGD16_LO:
5909 case R_PPC_GOT_TLSGD16_HI:
5910 case R_PPC_GOT_TLSGD16_HA:
5911 tls_type = TLS_TLS | TLS_GD;
5912 goto dogot;
5913
5914 case R_PPC_GOT_TLSLD16:
5915 case R_PPC_GOT_TLSLD16_LO:
5916 case R_PPC_GOT_TLSLD16_HI:
5917 case R_PPC_GOT_TLSLD16_HA:
5918 tls_type = TLS_TLS | TLS_LD;
5919 goto dogot;
5920
5921 case R_PPC_GOT_TPREL16:
5922 case R_PPC_GOT_TPREL16_LO:
5923 case R_PPC_GOT_TPREL16_HI:
5924 case R_PPC_GOT_TPREL16_HA:
5925 tls_type = TLS_TLS | TLS_TPREL;
5926 goto dogot;
5927
5928 case R_PPC_GOT_DTPREL16:
5929 case R_PPC_GOT_DTPREL16_LO:
5930 case R_PPC_GOT_DTPREL16_HI:
5931 case R_PPC_GOT_DTPREL16_HA:
5932 tls_type = TLS_TLS | TLS_DTPREL;
5933 goto dogot;
5934
5935 case R_PPC_GOT16:
5936 case R_PPC_GOT16_LO:
5937 case R_PPC_GOT16_HI:
5938 case R_PPC_GOT16_HA:
5939 dogot:
5940 {
5941 /* Relocation is to the entry for this symbol in the global
5942 offset table. */
5943 bfd_vma off;
5944 bfd_vma *offp;
5945 unsigned long indx;
5946
5947 if (htab->got == NULL)
5948 abort ();
5949
5950 indx = 0;
5951 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 5952 && (h == NULL
f5385ebf 5953 || !h->def_dynamic))
7619e7c7
AM		 5954 offp = &htab->tlsld_got.offset;
5955 else if (h != NULL)
5956 {
5957 bfd_boolean dyn;
5958 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 5959 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM		 5960 || (info->shared
5961 && SYMBOL_REFERENCES_LOCAL (info, h)))
5962 /* This is actually a static link, or it is a
5963 -Bsymbolic link and the symbol is defined
5964 locally, or the symbol was forced to be local
5965 because of a version file. */
5966 ;
5967 else
5968 {
5969 indx = h->dynindx;
5970 unresolved_reloc = FALSE;
5971 }
5972 offp = &h->got.offset;
5973 }
5974 else
5975 {
5976 if (local_got_offsets == NULL)
5977 abort ();
5978 offp = &local_got_offsets[r_symndx];
5979 }
5980
5981 /* The offset must always be a multiple of 4. We use the
5982 least significant bit to record whether we have already
5983 processed this entry. */
5984 off = *offp;
5985 if ((off & 1) != 0)
5986 off &= ~1;
5987 else
5988 {
70bccea4
AM		 5989 unsigned int tls_m = (tls_mask
5990 & (TLS_LD | TLS_GD | TLS_DTPREL
5991 | TLS_TPREL | TLS_TPRELGD));
5992
5993 if (offp == &htab->tlsld_got.offset)
5994 tls_m = TLS_LD;
5995 else if (h == NULL
f5385ebf 5996 || !h->def_dynamic)
70bccea4
AM		 5997 tls_m &= ~TLS_LD;
5998
5999 /* We might have multiple got entries for this sym.
6000 Initialize them all. */
6001 do
7619e7c7 6002 {
70bccea4
AM		 6003 int tls_ty = 0;
6004
6005 if ((tls_m & TLS_LD) != 0)
7619e7c7 6006 {
70bccea4
AM		 6007 tls_ty = TLS_TLS | TLS_LD;
6008 tls_m &= ~TLS_LD;
6009 }
6010 else if ((tls_m & TLS_GD) != 0)
6011 {
6012 tls_ty = TLS_TLS | TLS_GD;
6013 tls_m &= ~TLS_GD;
6014 }
6015 else if ((tls_m & TLS_DTPREL) != 0)
6016 {
6017 tls_ty = TLS_TLS | TLS_DTPREL;
6018 tls_m &= ~TLS_DTPREL;
6019 }
6020 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6021 {
6022 tls_ty = TLS_TLS | TLS_TPREL;
6023 tls_m = 0;
7619e7c7 6024 }
7619e7c7 6025
70bccea4 6026 /* Generate relocs for the dynamic linker. */
4e795f50
AM		 6027 if ((info->shared || indx != 0)
6028 && (h == NULL
6029 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6030 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 6031 {
70bccea4
AM		 6032 outrel.r_offset = (htab->got->output_section->vma
6033 + htab->got->output_offset
6034 + off);
e515b051 6035 outrel.r_addend = 0;
70bccea4
AM		 6036 if (tls_ty & (TLS_LD | TLS_GD))
6037 {
6038 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM		 6039 if (tls_ty == (TLS_TLS | TLS_GD))
6040 {
6041 loc = htab->relgot->contents;
6042 loc += (htab->relgot->reloc_count++
6043 * sizeof (Elf32_External_Rela));
6044 bfd_elf32_swap_reloca_out (output_bfd,
6045 &outrel, loc);
e515b051 6046 outrel.r_offset += 4;
70bccea4
AM		 6047 outrel.r_info
6048 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM		 6049 }
6050 }
6051 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6052 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6053 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6054 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6055 else if (indx == 0)
6056 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6057 else
6058 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
70bccea4 6059 if (indx == 0)
e515b051
AM		 6060 {
6061 outrel.r_addend += relocation;
6062 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 6063 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 6064 }
70bccea4
AM		 6065 loc = htab->relgot->contents;
6066 loc += (htab->relgot->reloc_count++
6067 * sizeof (Elf32_External_Rela));
6068 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM		 6069 }
6070
70bccea4
AM		 6071 /* Init the .got section contents if we're not
6072 emitting a reloc. */
6073 else
7619e7c7 6074 {
70bccea4
AM		 6075 bfd_vma value = relocation;
6076
7b609f53
AM		 6077 if (tls_ty == (TLS_TLS | TLS_LD))
6078 value = 1;
6079 else if (tls_ty != 0)
70bccea4 6080 {
e1918d23 6081 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 6082 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 6083 value += DTP_OFFSET - TP_OFFSET;
70bccea4 6084
7b609f53
AM		 6085 if (tls_ty == (TLS_TLS | TLS_GD))
6086 {
6087 bfd_put_32 (output_bfd, value,
6088 htab->got->contents + off + 4);
6089 value = 1;
6090 }
70bccea4 6091 }
70bccea4
AM		 6092 bfd_put_32 (output_bfd, value,
6093 htab->got->contents + off);
7619e7c7 6094 }
70bccea4
AM		 6095
6096 off += 4;
6097 if (tls_ty & (TLS_LD | TLS_GD))
6098 off += 4;
7619e7c7 6099 }
70bccea4
AM		 6100 while (tls_m != 0);
6101
6102 off = *offp;
6103 *offp = off | 1;
7619e7c7
AM		 6104 }
6105
6106 if (off >= (bfd_vma) -2)
6107 abort ();
6108
70bccea4
AM		 6109 if ((tls_type & TLS_TLS) != 0)
6110 {
6111 if (tls_type != (TLS_TLS | TLS_LD))
6112 {
6113 if ((tls_mask & TLS_LD) != 0
6114 && !(h == NULL
f5385ebf 6115 || !h->def_dynamic))
70bccea4
AM		 6116 off += 8;
6117 if (tls_type != (TLS_TLS | TLS_GD))
6118 {
6119 if ((tls_mask & TLS_GD) != 0)
6120 off += 8;
6121 if (tls_type != (TLS_TLS | TLS_DTPREL))
6122 {
6123 if ((tls_mask & TLS_DTPREL) != 0)
6124 off += 4;
6125 }
6126 }
6127 }
6128 }
6129
3b36f7e6
AM		 6130 relocation = htab->got->output_offset + off;
6131 relocation -= htab->elf.hgot->root.u.def.value;
7619e7c7
AM		 6132
6133 /* Addends on got relocations don't make much sense.
6134 x+off@got is actually x@got+off, and since the got is
6135 generated by a hash table traversal, the value in the
6136 got at entry m+n bears little relation to the entry m. */
6137 if (addend != 0)
6138 (*_bfd_error_handler)
d003868e
AM		 6139 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6140 input_bfd,
6141 input_section,
7619e7c7 6142 (long) rel->r_offset,
7b609f53 6143 howto->name,
7619e7c7
AM		 6144 sym_name);
6145 }
70bccea4 6146 break;
7619e7c7 6147
252b5132 6148 /* Relocations that need no special processing. */
7619e7c7 6149 case R_PPC_LOCAL24PC:
252b5132
RH		 6150 /* It makes no sense to point a local relocation
6151 at a symbol not in this object. */
7b609f53 6152 if (unresolved_reloc)
252b5132 6153 {
464e1740
ILT		 6154 if (! (*info->callbacks->undefined_symbol) (info,
6155 h->root.root.string,
6156 input_bfd,
6157 input_section,
5cc7c785 6158 rel->r_offset,
b34976b6
AM		 6159 TRUE))
6160 return FALSE;
252b5132
RH		 6161 continue;
6162 }
6163 break;
6164
7619e7c7
AM		 6165 case R_PPC_DTPREL16:
6166 case R_PPC_DTPREL16_LO:
6167 case R_PPC_DTPREL16_HI:
6168 case R_PPC_DTPREL16_HA:
e1918d23 6169 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 6170 break;
6171
70bccea4
AM		 6172 /* Relocations that may need to be propagated if this is a shared
6173 object. */
7619e7c7
AM		 6174 case R_PPC_TPREL16:
6175 case R_PPC_TPREL16_LO:
6176 case R_PPC_TPREL16_HI:
6177 case R_PPC_TPREL16_HA:
e1918d23 6178 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM		 6179 /* The TPREL16 relocs shouldn't really be used in shared
6180 libs as they will result in DT_TEXTREL being set, but
6181 support them anyway. */
6182 goto dodyn;
6183
6184 case R_PPC_TPREL32:
e1918d23 6185 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM		 6186 goto dodyn;
6187
6188 case R_PPC_DTPREL32:
e1918d23 6189 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 6190 goto dodyn;
6191
e515b051
AM		 6192 case R_PPC_DTPMOD32:
6193 relocation = 1;
6194 addend = 0;
6195 goto dodyn;
6196
d7128ce4
AM		 6197 case R_PPC_REL16:
6198 case R_PPC_REL16_LO:
6199 case R_PPC_REL16_HI:
6200 case R_PPC_REL16_HA:
6201 break;
6202
7619e7c7
AM		 6203 case R_PPC_REL24:
6204 case R_PPC_REL32:
6205 case R_PPC_REL14:
6206 case R_PPC_REL14_BRTAKEN:
6207 case R_PPC_REL14_BRNTAKEN:
252b5132
RH		 6208 /* If these relocations are not to a named symbol, they can be
6209 handled right here, no need to bother the dynamic linker. */
f6c52c13 6210 if (SYMBOL_REFERENCES_LOCAL (info, h)
3b36f7e6 6211 || h == htab->elf.hgot)
252b5132 6212 break;
70bccea4 6213 /* fall through */
252b5132 6214
70bccea4
AM		 6215 /* Relocations that always need to be propagated if this is a shared
6216 object. */
7619e7c7
AM		 6217 case R_PPC_ADDR32:
6218 case R_PPC_ADDR24:
6219 case R_PPC_ADDR16:
6220 case R_PPC_ADDR16_LO:
6221 case R_PPC_ADDR16_HI:
6222 case R_PPC_ADDR16_HA:
6223 case R_PPC_ADDR14:
6224 case R_PPC_ADDR14_BRTAKEN:
6225 case R_PPC_ADDR14_BRNTAKEN:
6226 case R_PPC_UADDR32:
6227 case R_PPC_UADDR16:
ee05f2fe
AM		 6228 /* r_symndx will be zero only for relocs against symbols
6229 from removed linkonce sections, or sections discarded by
6230 a linker script. */
7619e7c7 6231 dodyn:
ee05f2fe 6232 if (r_symndx == 0)
b1e24c02
DJ		 6233 {
6234 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6235 break;
6236 }
ee05f2fe
AM		 6237 /* Fall thru. */
6238
c87b5a93
AM		 6239 if ((input_section->flags & SEC_ALLOC) == 0)
6240 break;
6241 /* Fall thru. */
6242
ee05f2fe 6243 if ((info->shared
4e795f50
AM		 6244 && (h == NULL
6245 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6246 || h->root.type != bfd_link_hash_undefweak)
ee05f2fe 6247 && (MUST_BE_DYN_RELOC (r_type)
f6c52c13 6248 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM		 6249 || (ELIMINATE_COPY_RELOCS
6250 && !info->shared
ee05f2fe
AM		 6251 && h != NULL
6252 && h->dynindx != -1
f5385ebf
AM		 6253 && !h->non_got_ref
6254 && h->def_dynamic
6255 && !h->def_regular))
252b5132 6256 {
0bb2d96a 6257 int skip;
252b5132
RH		 6258
6259#ifdef DEBUG
55fd94b0
AM		 6260 fprintf (stderr, "ppc_elf_relocate_section needs to "
6261 "create relocation for %s\n",
70bccea4
AM		 6262 (h && h->root.root.string
6263 ? h->root.root.string : "<unknown>"));
252b5132
RH		 6264#endif
6265
6266 /* When generating a shared object, these relocations
70bccea4
AM		 6267 are copied into the output file to be resolved at run
6268 time. */
252b5132
RH		 6269 if (sreloc == NULL)
6270 {
6271 const char *name;
6272
6273 name = (bfd_elf_string_from_elf_section
6274 (input_bfd,
6275 elf_elfheader (input_bfd)->e_shstrndx,
6276 elf_section_data (input_section)->rel_hdr.sh_name));
6277 if (name == NULL)
b34976b6 6278 return FALSE;
252b5132 6279
0112cd26 6280 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
252b5132
RH		 6281 && strcmp (bfd_get_section_name (input_bfd,
6282 input_section),
6283 name + 5) == 0);
6284
7619e7c7 6285 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
252b5132
RH		 6286 BFD_ASSERT (sreloc != NULL);
6287 }
6288
0bb2d96a 6289 skip = 0;
252b5132 6290
c629eae0
JJ		 6291 outrel.r_offset =
6292 _bfd_elf_section_offset (output_bfd, info, input_section,
6293 rel->r_offset);
0bb2d96a
JJ		 6294 if (outrel.r_offset == (bfd_vma) -1
6295 || outrel.r_offset == (bfd_vma) -2)
6296 skip = (int) outrel.r_offset;
252b5132
RH		 6297 outrel.r_offset += (input_section->output_section->vma
6298 + input_section->output_offset);
6299
6300 if (skip)
6301 memset (&outrel, 0, sizeof outrel);
f6c52c13 6302 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 6303 {
7619e7c7 6304 unresolved_reloc = FALSE;
252b5132
RH		 6305 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6306 outrel.r_addend = rel->r_addend;
6307 }
6308 else
6309 {
47388f4c
AM		 6310 outrel.r_addend = relocation + rel->r_addend;
6311
252b5132 6312 if (r_type == R_PPC_ADDR32)
47388f4c 6313 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH		 6314 else
6315 {
6316 long indx;
6317
47388f4c 6318 if (bfd_is_abs_section (sec))
252b5132
RH		 6319 indx = 0;
6320 else if (sec == NULL || sec->owner == NULL)
6321 {
6322 bfd_set_error (bfd_error_bad_value);
b34976b6 6323 return FALSE;
252b5132
RH		 6324 }
6325 else
6326 {
6327 asection *osec;
6328
47388f4c
AM		 6329 /* We are turning this relocation into one
6330 against a section symbol. It would be
6331 proper to subtract the symbol's value,
6332 osec->vma, from the emitted reloc addend,
6333 but ld.so expects buggy relocs. */
252b5132
RH		 6334 osec = sec->output_section;
6335 indx = elf_section_data (osec)->dynindx;
74541ad4
AM		 6336 if (indx == 0)
6337 {
6338 osec = htab->elf.text_index_section;
6339 indx = elf_section_data (osec)->dynindx;
6340 }
6341 BFD_ASSERT (indx != 0);
252b5132 6342#ifdef DEBUG
74541ad4 6343 if (indx == 0)
e460dd0d 6344 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM		 6345 indx, osec->name, osec->flags,
6346 h->root.root.string);
252b5132
RH		 6347#endif
6348 }
6349
6350 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH		 6351 }
6352 }
6353
947216bf
AM		 6354 loc = sreloc->contents;
6355 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6356 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 6357
2243deae 6358 if (skip == -1)
252b5132 6359 continue;
2243deae
L		 6360
6361 /* This reloc will be computed at runtime. We clear the memory
6362 so that it contains predictable value. */
6363 if (! skip
6364 && ((input_section->flags & SEC_ALLOC) != 0
6365 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6366 {
6367 relocation = howto->pc_relative ? outrel.r_offset : 0;
6368 addend = 0;
6369 break;
6370 }
252b5132 6371 }
252b5132
RH		 6372 break;
6373
b4a38de6
AM		 6374 case R_PPC_RELAX32PC_PLT:
6375 case R_PPC_RELAX32_PLT:
a6aa5195
AM		 6376 {
6377 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6378
4a3dc543 6379 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 6380 relocation = (htab->glink->output_section->vma
6381 + htab->glink->output_offset
6382 + ent->glink_offset);
6383 else
6384 relocation = (htab->plt->output_section->vma
6385 + htab->plt->output_offset
6386 + ent->plt.offset);
6387 addend = 0;
6388 }
b4a38de6
AM		 6389 if (r_type == R_PPC_RELAX32_PLT)
6390 goto relax32;
6391 /* Fall thru */
6392
f31a141e
AM		 6393 case R_PPC_RELAX32PC:
6394 relocation -= (input_section->output_section->vma
6395 + input_section->output_offset
6396 + rel->r_offset - 4);
6397 /* Fall thru */
b4a38de6 6398
deaaf2f3 6399 case R_PPC_RELAX32:
b4a38de6 6400 relax32:
9abc968f
AM		 6401 {
6402 unsigned long t0;
6403 unsigned long t1;
6404
6405 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6406 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6407
6408 /* We're clearing the bits for R_PPC_ADDR16_HA
6409 and R_PPC_ADDR16_LO here. */
6410 t0 &= ~0xffff;
6411 t1 &= ~0xffff;
6412
6413 /* t0 is HA, t1 is LO */
6414 relocation += addend;
6415 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6416 t1 |= relocation & 0xffff;
6417
6418 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6419 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6420 }
8517fae7 6421 continue;
deaaf2f3 6422
70bccea4 6423 /* Indirect .sdata relocation. */
7619e7c7 6424 case R_PPC_EMB_SDAI16:
c9a2f333 6425 BFD_ASSERT (htab->sdata[0].section != NULL);
7619e7c7 6426 relocation
76750a2f
AM		 6427 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6428 h, relocation, rel);
252b5132
RH		 6429 break;
6430
70bccea4 6431 /* Indirect .sdata2 relocation. */
7619e7c7 6432 case R_PPC_EMB_SDA2I16:
c9a2f333 6433 BFD_ASSERT (htab->sdata[1].section != NULL);
7619e7c7 6434 relocation
76750a2f
AM		 6435 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6436 h, relocation, rel);
252b5132
RH		 6437 break;
6438
70bccea4
AM		 6439 /* Handle the TOC16 reloc. We want to use the offset within the .got
6440 section, not the actual VMA. This is appropriate when generating
6441 an embedded ELF object, for which the .got section acts like the
6442 AIX .toc section. */
7619e7c7 6443 case R_PPC_TOC16: /* phony GOT16 relocations */
55fd94b0 6444 BFD_ASSERT (sec != NULL);
252b5132
RH		 6445 BFD_ASSERT (bfd_is_und_section (sec)
6446 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
f12123c0 6447 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
252b5132 6448
70bccea4 6449 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH		 6450 break;
6451
7619e7c7 6452 case R_PPC_PLTREL24:
252b5132 6453 /* Relocation is to the entry for this symbol in the
70bccea4 6454 procedure linkage table. */
a6aa5195
AM		 6455 {
6456 struct plt_entry *ent = find_plt_ent (h, got2, addend);
252b5132 6457
a6aa5195
AM		 6458 addend = 0;
6459 if (ent == NULL
6460 || htab->plt == NULL)
6461 {
6462 /* We didn't make a PLT entry for this symbol. This
6463 happens when statically linking PIC code, or when
6464 using -Bsymbolic. */
6465 break;
6466 }
252b5132 6467
a6aa5195 6468 unresolved_reloc = FALSE;
4a3dc543 6469 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 6470 relocation = (htab->glink->output_section->vma
6471 + htab->glink->output_offset
6472 + ent->glink_offset);
6473 else
6474 relocation = (htab->plt->output_section->vma
6475 + htab->plt->output_offset
6476 + ent->plt.offset);
6477 }
8da6118f 6478 break;
252b5132 6479
70bccea4 6480 /* Relocate against _SDA_BASE_. */
7619e7c7 6481 case R_PPC_SDAREL16:
252b5132
RH		 6482 {
6483 const char *name;
046183de 6484 struct elf_link_hash_entry *sh;
252b5132 6485
55fd94b0 6486 BFD_ASSERT (sec != NULL);
252b5132 6487 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 6488 if (! ((CONST_STRNEQ (name, ".sdata")
5f819128 6489 && (name[6] == 0 || name[6] == '.'))
0112cd26 6490 || (CONST_STRNEQ (name, ".sbss")
5f819128 6491 && (name[5] == 0 || name[5] == '.'))))
252b5132 6492 {
55fd94b0 6493 (*_bfd_error_handler)
d003868e 6494 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 6495 "in the wrong output section (%s)"),
d003868e 6496 input_bfd,
55fd94b0
AM		 6497 sym_name,
6498 howto->name,
6499 name);
252b5132 6500 }
046183de
AM		 6501 sh = htab->sdata[0].sym;
6502 addend -= (sh->root.u.def.value
6503 + sh->root.u.def.section->output_offset
6504 + sh->root.u.def.section->output_section->vma);
252b5132
RH		 6505 }
6506 break;
6507
70bccea4 6508 /* Relocate against _SDA2_BASE_. */
7619e7c7 6509 case R_PPC_EMB_SDA2REL:
252b5132
RH		 6510 {
6511 const char *name;
046183de 6512 struct elf_link_hash_entry *sh;
252b5132 6513
55fd94b0 6514 BFD_ASSERT (sec != NULL);
252b5132 6515 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26
NC		 6516 if (! (CONST_STRNEQ (name, ".sdata2")
6517 || CONST_STRNEQ (name, ".sbss2")))
252b5132 6518 {
55fd94b0 6519 (*_bfd_error_handler)
d003868e 6520 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 6521 "in the wrong output section (%s)"),
d003868e 6522 input_bfd,
55fd94b0
AM		 6523 sym_name,
6524 howto->name,
6525 name);
c3668558 6526
252b5132 6527 bfd_set_error (bfd_error_bad_value);
b34976b6 6528 ret = FALSE;
252b5132
RH		 6529 continue;
6530 }
046183de
AM		 6531 sh = htab->sdata[1].sym;
6532 addend -= (sh->root.u.def.value
6533 + sh->root.u.def.section->output_offset
6534 + sh->root.u.def.section->output_section->vma);
252b5132
RH		 6535 }
6536 break;
6537
70bccea4 6538 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7
AM		 6539 case R_PPC_EMB_SDA21:
6540 case R_PPC_EMB_RELSDA:
252b5132
RH		 6541 {
6542 const char *name;
6543 int reg;
046183de 6544 struct elf_link_hash_entry *sh;
252b5132 6545
55fd94b0 6546 BFD_ASSERT (sec != NULL);
252b5132 6547 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 6548 if (((CONST_STRNEQ (name, ".sdata")
5f819128 6549 && (name[6] == 0 || name[6] == '.'))
0112cd26 6550 || (CONST_STRNEQ (name, ".sbss")
5f819128 6551 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH		 6552 {
6553 reg = 13;
046183de
AM		 6554 sh = htab->sdata[0].sym;
6555 addend -= (sh->root.u.def.value
6556 + sh->root.u.def.section->output_offset
6557 + sh->root.u.def.section->output_section->vma);
252b5132
RH		 6558 }
6559
0112cd26
NC		 6560 else if (CONST_STRNEQ (name, ".sdata2")
6561 || CONST_STRNEQ (name, ".sbss2"))
252b5132
RH		 6562 {
6563 reg = 2;
046183de
AM		 6564 sh = htab->sdata[1].sym;
6565 addend -= (sh->root.u.def.value
6566 + sh->root.u.def.section->output_offset
6567 + sh->root.u.def.section->output_section->vma);
252b5132
RH		 6568 }
6569
8da6118f
KH		 6570 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6571 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH		 6572 {
6573 reg = 0;
6574 }
6575
6576 else
6577 {
55fd94b0 6578 (*_bfd_error_handler)
d003868e 6579 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 6580 "in the wrong output section (%s)"),
d003868e 6581 input_bfd,
55fd94b0
AM		 6582 sym_name,
6583 howto->name,
6584 name);
252b5132
RH		 6585
6586 bfd_set_error (bfd_error_bad_value);
b34976b6 6587 ret = FALSE;
252b5132
RH		 6588 continue;
6589 }
6590
6591 if (r_type == R_PPC_EMB_SDA21)
6592 { /* fill in register field */
7619e7c7 6593 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 6594 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 6595 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH		 6596 }
6597 }
6598 break;
6599
70bccea4 6600 /* Relocate against the beginning of the section. */
7619e7c7
AM		 6601 case R_PPC_SECTOFF:
6602 case R_PPC_SECTOFF_LO:
6603 case R_PPC_SECTOFF_HI:
6604 case R_PPC_SECTOFF_HA:
55fd94b0 6605 BFD_ASSERT (sec != NULL);
252b5132 6606 addend -= sec->output_section->vma;
252b5132
RH		 6607 break;
6608
70bccea4 6609 /* Negative relocations. */
7619e7c7
AM		 6610 case R_PPC_EMB_NADDR32:
6611 case R_PPC_EMB_NADDR16:
6612 case R_PPC_EMB_NADDR16_LO:
6613 case R_PPC_EMB_NADDR16_HI:
6614 case R_PPC_EMB_NADDR16_HA:
8da6118f 6615 addend -= 2 * relocation;
252b5132
RH		 6616 break;
6617
7619e7c7
AM		 6618 case R_PPC_COPY:
6619 case R_PPC_GLOB_DAT:
6620 case R_PPC_JMP_SLOT:
6621 case R_PPC_RELATIVE:
6622 case R_PPC_PLT32:
6623 case R_PPC_PLTREL32:
6624 case R_PPC_PLT16_LO:
6625 case R_PPC_PLT16_HI:
6626 case R_PPC_PLT16_HA:
6627 case R_PPC_ADDR30:
6628 case R_PPC_EMB_RELSEC16:
6629 case R_PPC_EMB_RELST_LO:
6630 case R_PPC_EMB_RELST_HI:
6631 case R_PPC_EMB_RELST_HA:
6632 case R_PPC_EMB_BIT_FLD:
6633 (*_bfd_error_handler)
d003868e
AM		 6634 (_("%B: relocation %s is not yet supported for symbol %s."),
6635 input_bfd,
7619e7c7
AM		 6636 howto->name,
6637 sym_name);
252b5132
RH		 6638
6639 bfd_set_error (bfd_error_invalid_operation);
b34976b6 6640 ret = FALSE;
252b5132 6641 continue;
7619e7c7 6642 }
252b5132 6643
7619e7c7
AM		 6644 /* Do any further special processing. */
6645 switch (r_type)
6646 {
6647 default:
6648 break;
6649
6650 case R_PPC_ADDR16_HA:
d7128ce4 6651 case R_PPC_REL16_HA:
7619e7c7
AM		 6652 case R_PPC_SECTOFF_HA:
6653 case R_PPC_TPREL16_HA:
6654 case R_PPC_DTPREL16_HA:
7619e7c7
AM		 6655 case R_PPC_EMB_NADDR16_HA:
6656 case R_PPC_EMB_RELST_HA:
6657 /* It's just possible that this symbol is a weak symbol
7b609f53 6658 that's not actually defined anywhere. In that case,
7619e7c7
AM		 6659 'sec' would be NULL, and we should leave the symbol
6660 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 6661 if (sec == NULL)
6662 break;
6663 /* Fall thru */
6664
6665 case R_PPC_PLT16_HA:
6666 case R_PPC_GOT16_HA:
6667 case R_PPC_GOT_TLSGD16_HA:
6668 case R_PPC_GOT_TLSLD16_HA:
6669 case R_PPC_GOT_TPREL16_HA:
6670 case R_PPC_GOT_DTPREL16_HA:
6671 /* Add 0x10000 if sign bit in 0:15 is set.
6672 Bits 0:15 are not used. */
6673 addend += 0x8000;
7619e7c7 6674 break;
252b5132
RH		 6675 }
6676
252b5132 6677#ifdef DEBUG
55fd94b0
AM		 6678 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6679 "offset = %ld, addend = %ld\n",
252b5132 6680 howto->name,
8da6118f 6681 (int) r_type,
252b5132
RH		 6682 sym_name,
6683 r_symndx,
7619e7c7 6684 (long) rel->r_offset,
8da6118f 6685 (long) addend);
252b5132
RH		 6686#endif
6687
7619e7c7
AM		 6688 if (unresolved_reloc
6689 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 6690 && h->def_dynamic))
7619e7c7
AM		 6691 {
6692 (*_bfd_error_handler)
d003868e
AM		 6693 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6694 input_bfd,
6695 input_section,
7619e7c7 6696 (long) rel->r_offset,
7b609f53 6697 howto->name,
7619e7c7
AM		 6698 sym_name);
6699 ret = FALSE;
6700 }
6701
252b5132
RH		 6702 r = _bfd_final_link_relocate (howto,
6703 input_bfd,
6704 input_section,
6705 contents,
7619e7c7 6706 rel->r_offset,
252b5132
RH		 6707 relocation,
6708 addend);
6709
7619e7c7 6710 if (r != bfd_reloc_ok)
252b5132 6711 {
7619e7c7 6712 if (r == bfd_reloc_overflow)
252b5132 6713 {
7619e7c7
AM		 6714 if (warned)
6715 continue;
6716 if (h != NULL
6717 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH		 6718 && howto->pc_relative)
6719 {
6720 /* Assume this is a call protected by other code that
6721 detect the symbol is undefined. If this is the case,
6722 we can safely ignore the overflow. If not, the
6723 program is hosed anyway, and a little warning isn't
6724 going to help. */
252b5132 6725
dc1bc0c9
RH		 6726 continue;
6727 }
252b5132 6728
7619e7c7 6729 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 6730 (h ? &h->root : NULL),
7619e7c7
AM		 6731 sym_name,
6732 howto->name,
6733 rel->r_addend,
6734 input_bfd,
6735 input_section,
6736 rel->r_offset))
6737 return FALSE;
dc1bc0c9
RH		 6738 }
6739 else
6740 {
7619e7c7 6741 (*_bfd_error_handler)
d003868e
AM		 6742 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6743 input_bfd, input_section,
7b609f53 6744 (long) rel->r_offset, howto->name, sym_name, (int) r);
7619e7c7 6745 ret = FALSE;
252b5132
RH		 6746 }
6747 }
6748 }
6749
252b5132
RH		 6750#ifdef DEBUG
6751 fprintf (stderr, "\n");
6752#endif
6753
6754 return ret;
6755}
252b5132 6756\f
a6aa5195
AM		 6757#define PPC_LO(v) ((v) & 0xffff)
6758#define PPC_HI(v) (((v) >> 16) & 0xffff)
6759#define PPC_HA(v) PPC_HI ((v) + 0x8000)
6760
25dbc73a
AM		 6761/* Finish up dynamic symbol handling. We set the contents of various
6762 dynamic sections here. */
c5fccbec 6763
b34976b6 6764static bfd_boolean
25dbc73a
AM		 6765ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6766 struct bfd_link_info *info,
6767 struct elf_link_hash_entry *h,
6768 Elf_Internal_Sym *sym)
e1a9cb8e 6769{
25dbc73a 6770 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM		 6771 struct plt_entry *ent;
6772 bfd_boolean doneone;
e1a9cb8e 6773
25dbc73a
AM		 6774#ifdef DEBUG
6775 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6776 h->root.root.string);
6777#endif
e1a9cb8e 6778
25dbc73a
AM		 6779 htab = ppc_elf_hash_table (info);
6780 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 6781
a6aa5195
AM		 6782 doneone = FALSE;
6783 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6784 if (ent->plt.offset != (bfd_vma) -1)
6785 {
6786 if (!doneone)
6787 {
6788 Elf_Internal_Rela rela;
6789 bfd_byte *loc;
6790 bfd_vma reloc_index;
e1a9cb8e 6791
4a3dc543 6792 if (htab->plt_type == PLT_NEW)
9d8504b1
PB		 6793 reloc_index = ent->plt.offset / 4;
6794 else
6795 {
6796 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
6797 / htab->plt_slot_size);
6798 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 6799 && htab->plt_type == PLT_OLD)
9d8504b1
PB		 6800 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6801 }
6802
a6aa5195
AM		 6803 /* This symbol has an entry in the procedure linkage table.
6804 Set it up. */
4a3dc543 6805 if (htab->plt_type == PLT_VXWORKS)
a6aa5195 6806 {
9d8504b1
PB		 6807 bfd_vma got_offset;
6808 const bfd_vma *plt_entry;
6809
6810 /* The first three entries in .got.plt are reserved. */
6811 got_offset = (reloc_index + 3) * 4;
6812
6813 /* Use the right PLT. */
6814 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
6815 : ppc_elf_vxworks_plt_entry;
6816
6817 /* Fill in the .plt on VxWorks. */
6818 if (info->shared)
6819 {
6820 bfd_vma got_offset_hi = (got_offset >> 16)
6821 + ((got_offset & 0x8000) >> 15);
6822
6823 bfd_put_32 (output_bfd,
6824 plt_entry[0] | (got_offset_hi & 0xffff),
6825 htab->plt->contents + ent->plt.offset + 0);
6826 bfd_put_32 (output_bfd,
6827 plt_entry[1] | (got_offset & 0xffff),
6828 htab->plt->contents + ent->plt.offset + 4);
6829 }
6830 else
6831 {
636ce3f5
AM		 6832 bfd_vma got_loc
6833 = (got_offset
6834 + htab->elf.hgot->root.u.def.value
6835 + htab->elf.hgot->root.u.def.section->output_offset
6836 + htab->elf.hgot->root.u.def.section->output_section->vma);
9d8504b1
PB		 6837 bfd_vma got_loc_hi = (got_loc >> 16)
6838 + ((got_loc & 0x8000) >> 15);
6839
6840 bfd_put_32 (output_bfd,
6841 plt_entry[0] | (got_loc_hi & 0xffff),
6842 htab->plt->contents + ent->plt.offset + 0);
6843 bfd_put_32 (output_bfd,
6844 plt_entry[1] | (got_loc & 0xffff),
6845 htab->plt->contents + ent->plt.offset + 4);
6846 }
6847
6848 bfd_put_32 (output_bfd, plt_entry[2],
6849 htab->plt->contents + ent->plt.offset + 8);
6850 bfd_put_32 (output_bfd, plt_entry[3],
6851 htab->plt->contents + ent->plt.offset + 12);
6852
6853 /* This instruction is an immediate load. The value loaded is
6854 the byte offset of the R_PPC_JMP_SLOT relocation from the
6855 start of the .rela.plt section. The value is stored in the
6856 low-order 16 bits of the load instruction. */
6857 /* NOTE: It appears that this is now an index rather than a
6858 prescaled offset. */
6859 bfd_put_32 (output_bfd,
6860 plt_entry[4] | reloc_index,
6861 htab->plt->contents + ent->plt.offset + 16);
6862 /* This instruction is a PC-relative branch whose target is
6863 the start of the PLT section. The address of this branch
6864 instruction is 20 bytes beyond the start of this PLT entry.
6865 The address is encoded in bits 6-29, inclusive. The value
6866 stored is right-shifted by two bits, permitting a 26-bit
6867 offset. */
6868 bfd_put_32 (output_bfd,
6869 (plt_entry[5]
6870 | (-(ent->plt.offset + 20) & 0x03fffffc)),
6871 htab->plt->contents + ent->plt.offset + 20);
6872 bfd_put_32 (output_bfd, plt_entry[6],
6873 htab->plt->contents + ent->plt.offset + 24);
6874 bfd_put_32 (output_bfd, plt_entry[7],
6875 htab->plt->contents + ent->plt.offset + 28);
6876
6877 /* Fill in the GOT entry corresponding to this PLT slot with
6878 the address immediately after the the "bctr" instruction
6879 in this PLT entry. */
6880 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
6881 + htab->plt->output_offset
6882 + ent->plt.offset + 16),
6883 htab->sgotplt->contents + got_offset);
6884
6885 if (!info->shared)
6886 {
6887 /* Fill in a couple of entries in .rela.plt.unloaded. */
6888 loc = htab->srelplt2->contents
6889 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
6890 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
6891 * sizeof (Elf32_External_Rela));
6892
6893 /* Provide the @ha relocation for the first instruction. */
6894 rela.r_offset = (htab->plt->output_section->vma
6895 + htab->plt->output_offset
6896 + ent->plt.offset + 2);
636ce3f5 6897 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB		 6898 R_PPC_ADDR16_HA);
6899 rela.r_addend = got_offset;
6900 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6901 loc += sizeof (Elf32_External_Rela);
6902
6903 /* Provide the @l relocation for the second instruction. */
6904 rela.r_offset = (htab->plt->output_section->vma
6905 + htab->plt->output_offset
6906 + ent->plt.offset + 6);
636ce3f5 6907 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB		 6908 R_PPC_ADDR16_LO);
6909 rela.r_addend = got_offset;
6910 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6911 loc += sizeof (Elf32_External_Rela);
6912
6913 /* Provide a relocation for the GOT entry corresponding to this
6914 PLT slot. Point it at the middle of the .plt entry. */
6915 rela.r_offset = (htab->sgotplt->output_section->vma
6916 + htab->sgotplt->output_offset
6917 + got_offset);
7325306f 6918 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB		 6919 R_PPC_ADDR32);
6920 rela.r_addend = ent->plt.offset + 16;
6921 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6922 }
6923
6924 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
6925 In particular, the offset for the relocation is not the
6926 address of the PLT entry for this function, as specified
6927 by the ABI. Instead, the offset is set to the address of
6928 the GOT slot for this function. See EABI 4.4.4.1. */
6929 rela.r_offset = (htab->sgotplt->output_section->vma
6930 + htab->sgotplt->output_offset
6931 + got_offset);
6932
a6aa5195
AM		 6933 }
6934 else
6935 {
9d8504b1
PB		 6936 rela.r_offset = (htab->plt->output_section->vma
6937 + htab->plt->output_offset
6938 + ent->plt.offset);
4a3dc543 6939 if (htab->plt_type == PLT_OLD)
9d8504b1
PB		 6940 {
6941 /* We don't need to fill in the .plt. The ppc dynamic
6942 linker will fill it in. */
6943 }
6944 else
6945 {
6946 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6947 + htab->glink->output_section->vma
6948 + htab->glink->output_offset);
6949 bfd_put_32 (output_bfd, val,
6950 htab->plt->contents + ent->plt.offset);
6951 }
a6aa5195 6952 }
e1a9cb8e 6953
a6aa5195 6954 /* Fill in the entry in the .rela.plt section. */
a6aa5195
AM		 6955 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6956 rela.r_addend = 0;
e1a9cb8e 6957
a6aa5195
AM		 6958 loc = (htab->relplt->contents
6959 + reloc_index * sizeof (Elf32_External_Rela));
6960 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 6961
a6aa5195
AM		 6962 if (!h->def_regular)
6963 {
6964 /* Mark the symbol as undefined, rather than as defined in
6965 the .plt section. Leave the value alone. */
6966 sym->st_shndx = SHN_UNDEF;
6967 /* If the symbol is weak, we do need to clear the value.
6968 Otherwise, the PLT entry would provide a definition for
6969 the symbol even if the symbol wasn't defined anywhere,
6970 and so the symbol would never be NULL. */
6971 if (!h->ref_regular_nonweak)
6972 sym->st_value = 0;
6973 }
6974 doneone = TRUE;
6975 }
e1a9cb8e 6976
4a3dc543 6977 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 6978 {
6979 bfd_vma plt;
6980 unsigned char *p;
e1a9cb8e 6981
a6aa5195
AM		 6982 plt = (ent->plt.offset
6983 + htab->plt->output_section->vma
6984 + htab->plt->output_offset);
6985 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
e1a9cb8e 6986
a6aa5195
AM		 6987 if (info->shared || info->pie)
6988 {
6989 bfd_vma got = 0;
6990
6991 if (ent->addend >= 32768)
6992 got = (ent->addend
6993 + ent->sec->output_section->vma
6994 + ent->sec->output_offset);
6995 else if (htab->elf.hgot != NULL)
6996 got = (htab->elf.hgot->root.u.def.value
6997 + htab->elf.hgot->root.u.def.section->output_section->vma
6998 + htab->elf.hgot->root.u.def.section->output_offset);
6999
7000 plt -= got;
7001
7002 if (plt + 0x8000 < 0x10000)
7003 {
7004 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7005 p += 4;
7006 bfd_put_32 (output_bfd, MTCTR_11, p);
7007 p += 4;
7008 bfd_put_32 (output_bfd, BCTR, p);
7009 p += 4;
7010 bfd_put_32 (output_bfd, NOP, p);
7011 p += 4;
7012 }
7013 else
7014 {
7015 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7016 p += 4;
7017 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7018 p += 4;
7019 bfd_put_32 (output_bfd, MTCTR_11, p);
7020 p += 4;
7021 bfd_put_32 (output_bfd, BCTR, p);
7022 p += 4;
7023 }
7024 }
7025 else
7026 {
7027 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7028 p += 4;
7029 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7030 p += 4;
7031 bfd_put_32 (output_bfd, MTCTR_11, p);
7032 p += 4;
7033 bfd_put_32 (output_bfd, BCTR, p);
7034 p += 4;
28e99bb6
AM		 7035
7036 /* We only need one non-PIC glink stub. */
7037 break;
a6aa5195
AM		 7038 }
7039 }
7040 else
7041 break;
7042 }
e1a9cb8e 7043
25dbc73a
AM		 7044 if (h->needs_copy)
7045 {
7046 asection *s;
7047 Elf_Internal_Rela rela;
7048 bfd_byte *loc;
e1a9cb8e 7049
25dbc73a 7050 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 7051
25dbc73a
AM		 7052#ifdef DEBUG
7053 fprintf (stderr, ", copy");
7054#endif
e1a9cb8e 7055
25dbc73a 7056 BFD_ASSERT (h->dynindx != -1);
86bbe32f 7057
4dc4a9a5 7058 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 7059 s = htab->relsbss;
7060 else
7061 s = htab->relbss;
7062 BFD_ASSERT (s != NULL);
e1a9cb8e 7063
25dbc73a
AM		 7064 rela.r_offset = (h->root.u.def.value
7065 + h->root.u.def.section->output_section->vma
7066 + h->root.u.def.section->output_offset);
7067 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7068 rela.r_addend = 0;
7069 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7070 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7071 }
e1a9cb8e 7072
25dbc73a
AM		 7073#ifdef DEBUG
7074 fprintf (stderr, "\n");
7075#endif
e1a9cb8e 7076
25dbc73a 7077 /* Mark some specially defined symbols as absolute. */
9d8504b1
PB		 7078 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7079 || (!htab->is_vxworks
7080 && (h == htab->elf.hgot
7081 || strcmp (h->root.root.string,
7082 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
25dbc73a 7083 sym->st_shndx = SHN_ABS;
e1a9cb8e 7084
25dbc73a
AM		 7085 return TRUE;
7086}
7087\f
7088static enum elf_reloc_type_class
7089ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 7090{
25dbc73a
AM		 7091 switch (ELF32_R_TYPE (rela->r_info))
7092 {
7093 case R_PPC_RELATIVE:
7094 return reloc_class_relative;
7095 case R_PPC_REL24:
7096 case R_PPC_ADDR24:
7097 case R_PPC_JMP_SLOT:
7098 return reloc_class_plt;
7099 case R_PPC_COPY:
7100 return reloc_class_copy;
7101 default:
7102 return reloc_class_normal;
7103 }
e1a9cb8e 7104}
25dbc73a
AM		 7105\f
7106/* Finish up the dynamic sections. */
e1a9cb8e 7107
25dbc73a
AM		 7108static bfd_boolean
7109ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7110 struct bfd_link_info *info)
e1a9cb8e 7111{
25dbc73a 7112 asection *sdyn;
9d8504b1 7113 asection *splt;
25dbc73a 7114 struct ppc_elf_link_hash_table *htab;
1fe44d79 7115 bfd_vma got;
9d8504b1 7116 bfd * dynobj;
e1a9cb8e 7117
25dbc73a
AM		 7118#ifdef DEBUG
7119 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7120#endif
6b0817e5 7121
25dbc73a 7122 htab = ppc_elf_hash_table (info);
9d8504b1
PB		 7123 dynobj = elf_hash_table (info)->dynobj;
7124 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7125 if (htab->is_vxworks)
7126 splt = bfd_get_section_by_name (dynobj, ".plt");
7127 else
7128 splt = NULL;
e1a9cb8e 7129
1fe44d79
AM		 7130 got = 0;
7131 if (htab->elf.hgot != NULL)
7132 got = (htab->elf.hgot->root.u.def.value
7133 + htab->elf.hgot->root.u.def.section->output_section->vma
7134 + htab->elf.hgot->root.u.def.section->output_offset);
7135
25dbc73a 7136 if (htab->elf.dynamic_sections_created)
e1a9cb8e 7137 {
25dbc73a 7138 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 7139
25dbc73a 7140 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 7141
25dbc73a
AM		 7142 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7143 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7144 for (; dyncon < dynconend; dyncon++)
7145 {
7146 Elf_Internal_Dyn dyn;
7147 asection *s;
e1a9cb8e 7148
9d8504b1 7149 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 7150
25dbc73a
AM		 7151 switch (dyn.d_tag)
7152 {
7153 case DT_PLTGOT:
9d8504b1
PB		 7154 if (htab->is_vxworks)
7155 s = htab->sgotplt;
7156 else
7157 s = htab->plt;
25dbc73a
AM		 7158 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7159 break;
86bbe32f 7160
25dbc73a
AM		 7161 case DT_PLTRELSZ:
7162 dyn.d_un.d_val = htab->relplt->size;
7163 break;
e1a9cb8e 7164
25dbc73a
AM		 7165 case DT_JMPREL:
7166 s = htab->relplt;
7167 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7168 break;
2f89ff8d 7169
1fe44d79
AM		 7170 case DT_PPC_GOT:
7171 dyn.d_un.d_ptr = got;
d7128ce4
AM		 7172 break;
7173
9d8504b1
PB		 7174 case DT_RELASZ:
7175 if (htab->is_vxworks)
7176 {
7177 if (htab->relplt)
7178 dyn.d_un.d_ptr -= htab->relplt->size;
7179 break;
7180 }
7181 continue;
7182
25dbc73a
AM		 7183 default:
7184 continue;
7185 }
4c45e5c9 7186
25dbc73a
AM		 7187 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7188 }
7189 }
4c45e5c9 7190
25dbc73a
AM		 7191 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7192 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
3b36f7e6 7193 if (htab->got != NULL)
25dbc73a 7194 {
3b36f7e6
AM		 7195 unsigned char *p = htab->got->contents;
7196 bfd_vma val;
2f89ff8d 7197
636ce3f5 7198 p += htab->elf.hgot->root.u.def.value;
4a3dc543 7199 if (htab->plt_type == PLT_OLD)
d7128ce4 7200 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
3b36f7e6
AM		 7201
7202 val = 0;
7203 if (sdyn != NULL)
7204 val = sdyn->output_section->vma + sdyn->output_offset;
7205 bfd_put_32 (output_bfd, val, p);
25dbc73a
AM		 7206
7207 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7208 }
7209
9d8504b1
PB		 7210 /* Fill in the first entry in the VxWorks procedure linkage table. */
7211 if (splt && splt->size > 0)
7212 {
7213 /* Use the right PLT. */
7214 static const bfd_vma *plt_entry = NULL;
7215 plt_entry = info->shared ?
7216 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7217
7218 if (!info->shared)
7219 {
7220 bfd_vma got_value =
636ce3f5
AM		 7221 (htab->elf.hgot->root.u.def.section->output_section->vma
7222 + htab->elf.hgot->root.u.def.section->output_offset
7223 + htab->elf.hgot->root.u.def.value);
9d8504b1
PB		 7224 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7225
7226 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7227 splt->contents + 0);
7228 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7229 splt->contents + 4);
7230 }
7231 else
7232 {
7233 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7234 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7235 }
7236 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7237 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7238 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7239 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7240 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7241 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7242
7243 if (! info->shared)
7244 {
7245 Elf_Internal_Rela rela;
7246 bfd_byte *loc;
7247
7248 loc = htab->srelplt2->contents;
7249
7250 /* Output the @ha relocation for the first instruction. */
7251 rela.r_offset = (htab->plt->output_section->vma
7252 + htab->plt->output_offset
7253 + 2);
636ce3f5 7254 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB		 7255 rela.r_addend = 0;
7256 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7257 loc += sizeof (Elf32_External_Rela);
7258
7259 /* Output the @l relocation for the second instruction. */
7260 rela.r_offset = (htab->plt->output_section->vma
7261 + htab->plt->output_offset
7262 + 6);
636ce3f5 7263 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB		 7264 rela.r_addend = 0;
7265 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7266 loc += sizeof (Elf32_External_Rela);
7267
7268 /* Fix up the remaining relocations. They may have the wrong
7269 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7270 in which symbols were output. */
7271 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7272 {
7273 Elf_Internal_Rela rel;
7274
7275 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 7276 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB		 7277 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7278 loc += sizeof (Elf32_External_Rela);
7279
7280 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 7281 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB		 7282 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7283 loc += sizeof (Elf32_External_Rela);
7284
7285 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 7286 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB		 7287 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7288 loc += sizeof (Elf32_External_Rela);
7289 }
7290 }
7291 }
7292
d7128ce4
AM		 7293 if (htab->glink != NULL && htab->glink->contents != NULL)
7294 {
7295 unsigned char *p;
7296 unsigned char *endp;
a6aa5195 7297 bfd_vma res0;
d7128ce4 7298 unsigned int i;
a6aa5195
AM		 7299
7300 /*
7301 * PIC glink code is the following:
7302 *
7303 * # ith PLT code stub.
7304 * addis 11,30,(plt+(i-1)*4-got)@ha
7305 * lwz 11,(plt+(i-1)*4-got)@l(11)
7306 * mtctr 11
7307 * bctr
7308 *
7309 * # A table of branches, one for each plt entry.
7310 * # The idea is that the plt call stub loads ctr (and r11) with these
7311 * # addresses, so (r11 - res_0) gives the plt index * 4.
7312 * res_0: b PLTresolve
7313 * res_1: b PLTresolve
7314 * .
7315 * # Some number of entries towards the end can be nops
7316 * res_n_m3: nop
7317 * res_n_m2: nop
7318 * res_n_m1:
7319 *
7320 * PLTresolve:
7321 * addis 11,11,(1f-res_0)@ha
7322 * mflr 0
7323 * bcl 20,31,1f
7324 * 1: addi 11,11,(1b-res_0)@l
7325 * mflr 12
7326 * mtlr 0
7327 * sub 11,11,12 # r11 = index * 4
7328 * addis 12,12,(got+4-1b)@ha
7329 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7330 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7331 * mtctr 0
7332 * add 0,11,11
7333 * add 11,0,11 # r11 = index * 12 = reloc offset.
7334 * bctr
7335 */
7336 static const unsigned int pic_plt_resolve[] =
7337 {
7338 ADDIS_11_11,
7339 MFLR_0,
7340 BCL_20_31,
7341 ADDI_11_11,
7342 MFLR_12,
7343 MTLR_0,
7344 SUB_11_11_12,
7345 ADDIS_12_12,
7346 LWZ_0_12,
7347 LWZ_12_12,
7348 MTCTR_0,
7349 ADD_0_11_11,
7350 ADD_11_0_11,
7351 BCTR,
7352 NOP,
7353 NOP
7354 };
7355
d7128ce4
AM		 7356 static const unsigned int plt_resolve[] =
7357 {
a6aa5195
AM		 7358 LIS_12,
7359 ADDIS_11_11,
7360 LWZ_0_12,
7361 ADDI_11_11,
d7128ce4 7362 MTCTR_0,
7e8aeb9a 7363 ADD_0_11_11,
a6aa5195 7364 LWZ_12_12,
7e8aeb9a 7365 ADD_11_0_11,
d7128ce4
AM		 7366 BCTR,
7367 NOP,
7368 NOP,
a6aa5195
AM		 7369 NOP,
7370 NOP,
7371 NOP,
7372 NOP,
d7128ce4
AM		 7373 NOP
7374 };
7375
a6aa5195
AM		 7376 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7377 abort ();
7378 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM		 7379 abort ();
7380
a6aa5195 7381 /* Build the branch table, one for each plt entry (less one),
86b9da88 7382 and perhaps some padding. */
a6aa5195
AM		 7383 p = htab->glink->contents;
7384 p += htab->glink_pltresolve;
86b9da88
AM		 7385 endp = htab->glink->contents;
7386 endp += htab->glink->size - GLINK_PLTRESOLVE;
7387 while (p < endp - 8 * 4)
7388 {
7389 bfd_put_32 (output_bfd, B + endp - p, p);
7390 p += 4;
7391 }
7392 while (p < endp)
7393 {
7394 bfd_put_32 (output_bfd, NOP, p);
7395 p += 4;
7396 }
7397
7e8aeb9a 7398 res0 = (htab->glink_pltresolve
86b9da88
AM		 7399 + htab->glink->output_section->vma
7400 + htab->glink->output_offset);
7401
7402 /* Last comes the PLTresolve stub. */
7e8aeb9a
AM		 7403 if (info->shared || info->pie)
7404 {
a6aa5195 7405 bfd_vma bcl;
d7128ce4 7406
a6aa5195 7407 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 7408 {
a6aa5195 7409 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7e8aeb9a
AM		 7410 p += 4;
7411 }
a6aa5195
AM		 7412 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7413
7414 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7415 + htab->glink->output_section->vma
7416 + htab->glink->output_offset);
7417
7418 bfd_put_32 (output_bfd,
7419 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7420 bfd_put_32 (output_bfd,
7421 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7422 bfd_put_32 (output_bfd,
7423 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7424 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7425 {
7426 bfd_put_32 (output_bfd,
7427 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7428 bfd_put_32 (output_bfd,
7429 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7430 }
7431 else
7432 {
7433 bfd_put_32 (output_bfd,
7434 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7435 bfd_put_32 (output_bfd,
7436 LWZ_12_12 + 4, p + 9*4);
7437 }
7e8aeb9a
AM		 7438 }
7439 else
d7128ce4 7440 {
a6aa5195 7441 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a
AM		 7442 {
7443 bfd_put_32 (output_bfd, plt_resolve[i], p);
7444 p += 4;
7445 }
a6aa5195
AM		 7446 p -= 4 * ARRAY_SIZE (plt_resolve);
7447
7448 bfd_put_32 (output_bfd,
7449 LIS_12 + PPC_HA (got + 4), p + 0*4);
7450 bfd_put_32 (output_bfd,
7451 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
7452 bfd_put_32 (output_bfd,
7453 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
7454 if (PPC_HA (got + 4) == PPC_HA (got + 8))
7455 {
7456 bfd_put_32 (output_bfd,
7457 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
7458 bfd_put_32 (output_bfd,
7459 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
7460 }
7461 else
7462 {
7463 bfd_put_32 (output_bfd,
7464 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
7465 bfd_put_32 (output_bfd,
7466 LWZ_12_12 + 4, p + 6*4);
7467 }
d7128ce4 7468 }
d7128ce4
AM		 7469 }
7470
25dbc73a
AM		 7471 return TRUE;
7472}
e1a9cb8e 7473\f
252b5132
RH		 7474#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7475#define TARGET_LITTLE_NAME "elf32-powerpcle"
7476#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7477#define TARGET_BIG_NAME "elf32-powerpc"
7478#define ELF_ARCH bfd_arch_powerpc
7479#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC		 7480#ifdef __QNXTARGET__
7481#define ELF_MAXPAGESIZE 0x1000
7482#else
252b5132 7483#define ELF_MAXPAGESIZE 0x10000
d0facd1b 7484#endif
b1342370 7485#define ELF_MINPAGESIZE 0x1000
24718e3b 7486#define ELF_COMMONPAGESIZE 0x1000
252b5132
RH		 7487#define elf_info_to_howto ppc_elf_info_to_howto
7488
7489#ifdef EM_CYGNUS_POWERPC
7490#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7491#endif
7492
7493#ifdef EM_PPC_OLD
7494#define ELF_MACHINE_ALT2 EM_PPC_OLD
7495#endif
7496
7497#define elf_backend_plt_not_loaded 1
252b5132 7498#define elf_backend_can_gc_sections 1
51b64d56 7499#define elf_backend_can_refcount 1
b491616a 7500#define elf_backend_rela_normal 1
252b5132 7501
43c40ab2 7502#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 7503#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 7504#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132
RH		 7505#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7506#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 7507#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
252b5132 7508
feee612b 7509#define elf_backend_object_p ppc_elf_object_p
252b5132
RH		 7510#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7511#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7512#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7513#define elf_backend_relocate_section ppc_elf_relocate_section
7514#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7515#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 7516#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH		 7517#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7518#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7519#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7520#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7521#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7522#define elf_backend_fake_sections ppc_elf_fake_sections
7523#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
c5fccbec
DJ		 7524#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7525#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 7526#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 7527#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM		 7528#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7529#define elf_backend_final_write_processing ppc_elf_final_write_processing
7530#define elf_backend_write_section ppc_elf_write_section
551b43fd 7531#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 7532#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 7533#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 7534#define elf_backend_init_index_section _bfd_elf_init_1_index_section
252b5132
RH		 7535
7536#include "elf32-target.h"
9d8504b1
PB		 7537
7538/* VxWorks Target */
7539
7540#undef TARGET_LITTLE_SYM
7541#undef TARGET_LITTLE_NAME
7542
7543#undef TARGET_BIG_SYM
7544#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7545#undef TARGET_BIG_NAME
7546#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7547
d5e3d971
PB		 7548/* VxWorks uses the elf default section flags for .plt. */
7549static const struct bfd_elf_special_section *
7550ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 7551{
d5e3d971
PB		 7552 if (sec->name == NULL)
7553 return NULL;
7554
7555 if (strcmp (sec->name, ".plt") == 0)
7556 return _bfd_elf_get_sec_type_attr (abfd, sec);
7557
7558 return ppc_elf_get_sec_type_attr (abfd, sec);
7559}
9d8504b1
PB		 7560
7561/* Like ppc_elf_link_hash_table_create, but overrides
7562 appropriately for VxWorks. */
7563static struct bfd_link_hash_table *
7564ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
7565{
7566 struct bfd_link_hash_table *ret;
7567
7568 ret = ppc_elf_link_hash_table_create (abfd);
7569 if (ret)
7570 {
7571 struct ppc_elf_link_hash_table *htab
7572 = (struct ppc_elf_link_hash_table *)ret;
7573 htab->is_vxworks = 1;
4a3dc543 7574 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB		 7575 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
7576 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
7577 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
7578 }
7579 return ret;
7580}
7581
7582/* Tweak magic VxWorks symbols as they are loaded. */
7583static bfd_boolean
7584ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
7585 struct bfd_link_info *info,
7586 Elf_Internal_Sym *sym,
7587 const char **namep ATTRIBUTE_UNUSED,
7588 flagword *flagsp ATTRIBUTE_UNUSED,
7589 asection **secp,
7590 bfd_vma *valp)
7591{
7592 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
7593 valp))
7594 return FALSE;
7595
7596 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
7597}
7598
9d8504b1
PB		 7599static void
7600ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
7601{
7602 ppc_elf_final_write_processing(abfd, linker);
7603 elf_vxworks_final_write_processing(abfd, linker);
7604}
7605
7606/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7607 define it. */
7608#undef elf_backend_want_plt_sym
7609#define elf_backend_want_plt_sym 1
7610#undef elf_backend_want_got_plt
7611#define elf_backend_want_got_plt 1
7612#undef elf_backend_got_symbol_offset
7613#define elf_backend_got_symbol_offset 0
7614#undef elf_backend_plt_not_loaded
7615#define elf_backend_plt_not_loaded 0
7616#undef elf_backend_plt_readonly
7617#define elf_backend_plt_readonly 1
7618#undef elf_backend_got_header_size
7619#define elf_backend_got_header_size 12
7620
7621#undef bfd_elf32_bfd_link_hash_table_create
7622#define bfd_elf32_bfd_link_hash_table_create \
7623 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB		 7624#undef elf_backend_add_symbol_hook
7625#define elf_backend_add_symbol_hook \
7626 ppc_elf_vxworks_add_symbol_hook
7627#undef elf_backend_link_output_symbol_hook
7628#define elf_backend_link_output_symbol_hook \
9c72ff84 7629 elf_vxworks_link_output_symbol_hook
9d8504b1
PB		 7630#undef elf_backend_final_write_processing
7631#define elf_backend_final_write_processing \
7632 ppc_elf_vxworks_final_write_processing
d5e3d971
PB		 7633#undef elf_backend_get_sec_type_attr
7634#define elf_backend_get_sec_type_attr \
7635 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB		 7636#undef elf_backend_emit_relocs
7637#define elf_backend_emit_relocs \
7638 elf_vxworks_emit_relocs
7639
7640#undef elf32_bed
7641#define elf32_bed ppc_elf_vxworks_bed
7642
7643#include "elf32-target.h"
GDB Binutils - Deliverables
This page took 3.794913 seconds and 4 git commands to generate.