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[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
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252b5132 1/* PowerPC-specific support for 32-bit ELF
051d5130 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
ab96bf03 3 2004, 2005, 2006, 2007 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
3db64b00 28#include "sysdep.h"
183e98be 29#include <stdarg.h>
252b5132 30#include "bfd.h"
252b5132
RH		 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
157090f7
AM		 1581static reloc_howto_type *
1582ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1583 const char *r_name)
1584{
1585 unsigned int i;
1586
1587 for (i = 0;
1588 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1589 i++)
1590 if (ppc_elf_howto_raw[i].name != NULL
1591 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1592 return &ppc_elf_howto_raw[i];
1593
1594 return NULL;
1595}
1596
25dbc73a
AM		 1597/* Set the howto pointer for a PowerPC ELF reloc. */
1598
1599static void
1600ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1601 arelent *cache_ptr,
1602 Elf_Internal_Rela *dst)
1603{
1604 /* Initialize howto table if not already done. */
1605 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1606 ppc_elf_howto_init ();
1607
1608 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1609 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1610}
1611
d7128ce4 1612/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM		 1613
1614static bfd_reloc_status_type
1615ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1616 arelent *reloc_entry,
1617 asymbol *symbol,
1618 void *data ATTRIBUTE_UNUSED,
1619 asection *input_section,
1620 bfd *output_bfd,
1621 char **error_message ATTRIBUTE_UNUSED)
1622{
1623 bfd_vma relocation;
1624
1625 if (output_bfd != NULL)
1626 {
1627 reloc_entry->address += input_section->output_offset;
1628 return bfd_reloc_ok;
1629 }
1630
1631 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1632 return bfd_reloc_outofrange;
1633
1634 if (bfd_is_com_section (symbol->section))
1635 relocation = 0;
1636 else
1637 relocation = symbol->value;
1638
1639 relocation += symbol->section->output_section->vma;
1640 relocation += symbol->section->output_offset;
1641 relocation += reloc_entry->addend;
d7128ce4
AM		 1642 if (reloc_entry->howto->pc_relative)
1643 relocation -= reloc_entry->address;
25dbc73a
AM		 1644
1645 reloc_entry->addend += (relocation & 0x8000) << 1;
1646
1647 return bfd_reloc_continue;
1648}
1649
1650static bfd_reloc_status_type
1651ppc_elf_unhandled_reloc (bfd *abfd,
1652 arelent *reloc_entry,
1653 asymbol *symbol,
1654 void *data,
1655 asection *input_section,
1656 bfd *output_bfd,
1657 char **error_message)
1658{
1659 /* If this is a relocatable link (output_bfd test tells us), just
1660 call the generic function. Any adjustment will be done at final
1661 link time. */
1662 if (output_bfd != NULL)
1663 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1664 input_section, output_bfd, error_message);
1665
1666 if (error_message != NULL)
1667 {
1668 static char buf[60];
1669 sprintf (buf, _("generic linker can't handle %s"),
1670 reloc_entry->howto->name);
1671 *error_message = buf;
1672 }
1673 return bfd_reloc_dangerous;
1674}
1675\f
1676/* Sections created by the linker. */
1677
1678typedef struct elf_linker_section
1679{
c9a2f333 1680 /* Pointer to the bfd section. */
25dbc73a 1681 asection *section;
c9a2f333
AM		 1682 /* Section name. */
1683 const char *name;
1684 /* Associated bss section name. */
1685 const char *bss_name;
1686 /* Associated symbol name. */
1687 const char *sym_name;
046183de
AM		 1688 /* Associated symbol. */
1689 struct elf_link_hash_entry *sym;
25dbc73a
AM		 1690} elf_linker_section_t;
1691
1692/* Linked list of allocated pointer entries. This hangs off of the
1693 symbol lists, and provides allows us to return different pointers,
1694 based on different addend's. */
1695
1696typedef struct elf_linker_section_pointers
1697{
1698 /* next allocated pointer for this symbol */
1699 struct elf_linker_section_pointers *next;
1700 /* offset of pointer from beginning of section */
1701 bfd_vma offset;
1702 /* addend used */
1703 bfd_vma addend;
1704 /* which linker section this is */
1705 elf_linker_section_t *lsect;
25dbc73a
AM		 1706} elf_linker_section_pointers_t;
1707
1708struct ppc_elf_obj_tdata
1709{
1710 struct elf_obj_tdata elf;
1711
1712 /* A mapping from local symbols to offsets into the various linker
1713 sections added. This is index by the symbol index. */
1714 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM		 1715
1716 /* Flags used to auto-detect plt type. */
1717 unsigned int makes_plt_call : 1;
1718 unsigned int has_rel16 : 1;
25dbc73a
AM		 1719};
1720
1721#define ppc_elf_tdata(bfd) \
1722 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 1723
25dbc73a
AM		 1724#define elf_local_ptr_offsets(bfd) \
1725 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 1726
25dbc73a 1727/* Override the generic function because we store some extras. */
7619e7c7 1728
25dbc73a
AM		 1729static bfd_boolean
1730ppc_elf_mkobject (bfd *abfd)
1731{
25dbc73a 1732 if (abfd->tdata.any == NULL)
62d7a5f6
AM		 1733 {
1734 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1735 abfd->tdata.any = bfd_zalloc (abfd, amt);
1736 if (abfd->tdata.any == NULL)
1737 return FALSE;
1738 }
1739 return bfd_elf_mkobject (abfd);
25dbc73a 1740}
7619e7c7 1741
25dbc73a
AM		 1742/* Fix bad default arch selected for a 32 bit input bfd when the
1743 default is 64 bit. */
7619e7c7 1744
25dbc73a
AM		 1745static bfd_boolean
1746ppc_elf_object_p (bfd *abfd)
1747{
1748 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1749 {
1750 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 1751
25dbc73a
AM		 1752 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1753 {
1754 /* Relies on arch after 64 bit default being 32 bit default. */
1755 abfd->arch_info = abfd->arch_info->next;
1756 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1757 }
1758 }
1759 return TRUE;
1760}
7619e7c7 1761
25dbc73a 1762/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 1763
25dbc73a
AM		 1764static bfd_boolean
1765ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1766{
1767 BFD_ASSERT (!elf_flags_init (abfd)
1768 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 1769
25dbc73a
AM		 1770 elf_elfheader (abfd)->e_flags = flags;
1771 elf_flags_init (abfd) = TRUE;
1772 return TRUE;
1773}
1774
25dbc73a 1775/* Support for core dump NOTE sections. */
deaaf2f3 1776
b34976b6 1777static bfd_boolean
25dbc73a 1778ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 1779{
25dbc73a
AM		 1780 int offset;
1781 unsigned int size;
252b5132 1782
25dbc73a
AM		 1783 switch (note->descsz)
1784 {
1785 default:
1786 return FALSE;
252b5132 1787
25dbc73a
AM		 1788 case 268: /* Linux/PPC. */
1789 /* pr_cursig */
1790 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 1791
25dbc73a
AM		 1792 /* pr_pid */
1793 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 1794
25dbc73a
AM		 1795 /* pr_reg */
1796 offset = 72;
1797 size = 192;
deaaf2f3 1798
25dbc73a
AM		 1799 break;
1800 }
deaaf2f3 1801
25dbc73a
AM		 1802 /* Make a ".reg/999" section. */
1803 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1804 size, note->descpos + offset);
1805}
252b5132 1806
25dbc73a
AM		 1807static bfd_boolean
1808ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1809{
1810 switch (note->descsz)
deaaf2f3 1811 {
25dbc73a
AM		 1812 default:
1813 return FALSE;
deaaf2f3 1814
25dbc73a
AM		 1815 case 128: /* Linux/PPC elf_prpsinfo. */
1816 elf_tdata (abfd)->core_program
1817 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1818 elf_tdata (abfd)->core_command
1819 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1820 }
9abc968f 1821
25dbc73a
AM		 1822 /* Note that for some reason, a spurious space is tacked
1823 onto the end of the args in some (at least one anyway)
1824 implementations, so strip it off if it exists. */
70bccea4 1825
25dbc73a
AM		 1826 {
1827 char *command = elf_tdata (abfd)->core_command;
1828 int n = strlen (command);
70bccea4 1829
25dbc73a
AM		 1830 if (0 < n && command[n - 1] == ' ')
1831 command[n - 1] = '\0';
1832 }
deaaf2f3 1833
25dbc73a
AM		 1834 return TRUE;
1835}
deaaf2f3 1836
183e98be
AM		 1837static char *
1838ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1839{
1840 switch (note_type)
1841 {
1842 default:
1843 return NULL;
1844
1845 case NT_PRPSINFO:
1846 {
1847 char data[128];
1848 va_list ap;
1849
1850 va_start (ap, note_type);
1851 memset (data, 0, 32);
1852 strncpy (data + 32, va_arg (ap, const char *), 16);
1853 strncpy (data + 48, va_arg (ap, const char *), 80);
1854 va_end (ap);
1855 return elfcore_write_note (abfd, buf, bufsiz,
1856 "CORE", note_type, data, sizeof (data));
1857 }
1858
1859 case NT_PRSTATUS:
1860 {
1861 char data[268];
1862 va_list ap;
1863 long pid;
1864 int cursig;
1865 const void *greg;
1866
1867 va_start (ap, note_type);
1868 memset (data, 0, 72);
1869 pid = va_arg (ap, long);
1870 bfd_put_32 (abfd, pid, data + 24);
1871 cursig = va_arg (ap, int);
1872 bfd_put_16 (abfd, cursig, data + 12);
1873 greg = va_arg (ap, const void *);
1874 memcpy (data + 72, greg, 192);
1875 memset (data + 264, 0, 4);
1876 va_end (ap);
1877 return elfcore_write_note (abfd, buf, bufsiz,
1878 "CORE", note_type, data, sizeof (data));
1879 }
1880 }
1881}
1882
25dbc73a
AM		 1883/* Return address for Ith PLT stub in section PLT, for relocation REL
1884 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 1885
25dbc73a
AM		 1886static bfd_vma
1887ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1888 const asection *plt ATTRIBUTE_UNUSED,
1889 const arelent *rel)
1890{
1891 return rel->address;
1892}
deaaf2f3 1893
25dbc73a 1894/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L		 1895 is called when bfd_section_from_shdr finds a section with an unknown
1896 type. */
deaaf2f3 1897
25dbc73a 1898static bfd_boolean
6dc132d9
L		 1899ppc_elf_section_from_shdr (bfd *abfd,
1900 Elf_Internal_Shdr *hdr,
1901 const char *name,
1902 int shindex)
25dbc73a
AM		 1903{
1904 asection *newsect;
1905 flagword flags;
d1c6de6f 1906
6dc132d9 1907 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 1908 return FALSE;
deaaf2f3 1909
25dbc73a
AM		 1910 newsect = hdr->bfd_section;
1911 flags = bfd_get_section_flags (abfd, newsect);
1912 if (hdr->sh_flags & SHF_EXCLUDE)
1913 flags |= SEC_EXCLUDE;
9abc968f 1914
25dbc73a
AM		 1915 if (hdr->sh_type == SHT_ORDERED)
1916 flags |= SEC_SORT_ENTRIES;
d1c6de6f 1917
25dbc73a
AM		 1918 bfd_set_section_flags (abfd, newsect, flags);
1919 return TRUE;
1920}
1921
1922/* Set up any other section flags and such that may be necessary. */
1923
1924static bfd_boolean
1925ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1926 Elf_Internal_Shdr *shdr,
1927 asection *asect)
1928{
d30e8e7c 1929 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
25dbc73a
AM		 1930 shdr->sh_flags |= SHF_EXCLUDE;
1931
1932 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1933 shdr->sh_type = SHT_ORDERED;
1934
1935 return TRUE;
1936}
1937
1938/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1939 need to bump up the number of section headers. */
1940
1941static int
a6b96beb
AM		 1942ppc_elf_additional_program_headers (bfd *abfd,
1943 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM		 1944{
1945 asection *s;
1946 int ret = 0;
d1c6de6f 1947
25dbc73a
AM		 1948 s = bfd_get_section_by_name (abfd, ".sbss2");
1949 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1950 ++ret;
d1c6de6f 1951
25dbc73a
AM		 1952 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1953 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1954 ++ret;
deaaf2f3 1955
25dbc73a
AM		 1956 return ret;
1957}
deaaf2f3 1958
25dbc73a
AM		 1959/* Add extra PPC sections -- Note, for now, make .sbss2 and
1960 .PPC.EMB.sbss0 a normal section, and not a bss section so
1961 that the linker doesn't crater when trying to make more than
1962 2 sections. */
e656e369 1963
b35d266b 1964static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 1965{
0112cd26
NC		 1966 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1967 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1968 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1969 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1970 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1971 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1972 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
1973 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1974 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1975 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 1976};
1977
551b43fd
AM		 1978/* This is what we want for new plt/got. */
1979static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 1980 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM		 1981
1982static const struct bfd_elf_special_section *
1983ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 1984{
b35d266b 1985 const struct bfd_elf_special_section *ssect;
551b43fd
AM		 1986
1987 /* See if this is one of the special sections. */
1988 if (sec->name == NULL)
1989 return NULL;
1990
1991 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
1992 sec->use_rela_p);
1993 if (ssect != NULL)
1994 {
1995 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
1996 ssect = &ppc_alt_plt;
1997 return ssect;
1998 }
1999
2000 return _bfd_elf_get_sec_type_attr (abfd, sec);
2001}
25dbc73a
AM		 2002\f
2003/* Very simple linked list structure for recording apuinfo values. */
2004typedef struct apuinfo_list
2005{
2006 struct apuinfo_list *next;
2007 unsigned long value;
2008}
2009apuinfo_list;
e656e369 2010
25dbc73a 2011static apuinfo_list *head;
deaaf2f3 2012
deaaf2f3 2013
25dbc73a
AM		 2014static void
2015apuinfo_list_init (void)
2016{
2017 head = NULL;
2018}
9abc968f 2019
25dbc73a
AM		 2020static void
2021apuinfo_list_add (unsigned long value)
2022{
2023 apuinfo_list *entry = head;
deaaf2f3 2024
25dbc73a
AM		 2025 while (entry != NULL)
2026 {
2027 if (entry->value == value)
2028 return;
2029 entry = entry->next;
2030 }
b4a38de6 2031
25dbc73a
AM		 2032 entry = bfd_malloc (sizeof (* entry));
2033 if (entry == NULL)
2034 return;
e656e369 2035
25dbc73a
AM		 2036 entry->value = value;
2037 entry->next = head;
2038 head = entry;
2039}
9abc968f 2040
25dbc73a
AM		 2041static unsigned
2042apuinfo_list_length (void)
2043{
2044 apuinfo_list *entry;
2045 unsigned long count;
9abc968f 2046
25dbc73a
AM		 2047 for (entry = head, count = 0;
2048 entry;
2049 entry = entry->next)
2050 ++ count;
e656e369 2051
25dbc73a
AM		 2052 return count;
2053}
eea6121a 2054
25dbc73a
AM		 2055static inline unsigned long
2056apuinfo_list_element (unsigned long number)
2057{
2058 apuinfo_list * entry;
e656e369 2059
25dbc73a
AM		 2060 for (entry = head;
2061 entry && number --;
2062 entry = entry->next)
2063 ;
252b5132 2064
25dbc73a
AM		 2065 return entry ? entry->value : 0;
2066}
2067
2068static void
2069apuinfo_list_finish (void)
2070{
2071 apuinfo_list *entry;
2072
2073 for (entry = head; entry;)
252b5132 2074 {
25dbc73a
AM		 2075 apuinfo_list *next = entry->next;
2076 free (entry);
2077 entry = next;
2078 }
9abc968f 2079
25dbc73a
AM		 2080 head = NULL;
2081}
9abc968f 2082
25dbc73a
AM		 2083#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2084#define APUINFO_LABEL "APUinfo"
9abc968f 2085
25dbc73a
AM		 2086/* Scan the input BFDs and create a linked list of
2087 the APUinfo values that will need to be emitted. */
9abc968f 2088
25dbc73a
AM		 2089static void
2090ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2091{
2092 bfd *ibfd;
2093 asection *asec;
2094 char *buffer;
2095 unsigned num_input_sections;
2096 bfd_size_type output_section_size;
2097 unsigned i;
2098 unsigned num_entries;
2099 unsigned long offset;
2100 unsigned long length;
2101 const char *error_message = NULL;
9abc968f 2102
25dbc73a
AM		 2103 if (link_info == NULL)
2104 return;
9abc968f 2105
25dbc73a
AM		 2106 /* Scan the input bfds, looking for apuinfo sections. */
2107 num_input_sections = 0;
2108 output_section_size = 0;
252b5132 2109
25dbc73a 2110 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2111 {
25dbc73a
AM		 2112 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2113 if (asec)
252b5132 2114 {
25dbc73a
AM		 2115 ++ num_input_sections;
2116 output_section_size += asec->size;
252b5132 2117 }
252b5132
RH		 2118 }
2119
25dbc73a
AM		 2120 /* We need at least one input sections
2121 in order to make merging worthwhile. */
2122 if (num_input_sections < 1)
2123 return;
deaaf2f3 2124
25dbc73a
AM		 2125 /* Just make sure that the output section exists as well. */
2126 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2127 if (asec == NULL)
2128 return;
252b5132 2129
25dbc73a
AM		 2130 /* Allocate a buffer for the contents of the input sections. */
2131 buffer = bfd_malloc (output_section_size);
2132 if (buffer == NULL)
2133 return;
252b5132 2134
25dbc73a
AM		 2135 offset = 0;
2136 apuinfo_list_init ();
252b5132 2137
25dbc73a
AM		 2138 /* Read in the input sections contents. */
2139 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2140 {
25dbc73a
AM		 2141 unsigned long datum;
2142 char *ptr;
252b5132 2143
25dbc73a
AM		 2144 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2145 if (asec == NULL)
2146 continue;
252b5132 2147
25dbc73a
AM		 2148 length = asec->size;
2149 if (length < 24)
2150 {
2151 error_message = _("corrupt or empty %s section in %B");
2152 goto fail;
2153 }
252b5132 2154
25dbc73a
AM		 2155 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2156 || (bfd_bread (buffer + offset, length, ibfd) != length))
2157 {
2158 error_message = _("unable to read in %s section from %B");
2159 goto fail;
2160 }
252b5132 2161
25dbc73a
AM		 2162 /* Process the contents of the section. */
2163 ptr = buffer + offset;
2164 error_message = _("corrupt %s section in %B");
252b5132 2165
25dbc73a
AM		 2166 /* Verify the contents of the header. Note - we have to
2167 extract the values this way in order to allow for a
2168 host whose endian-ness is different from the target. */
2169 datum = bfd_get_32 (ibfd, ptr);
2170 if (datum != sizeof APUINFO_LABEL)
2171 goto fail;
252b5132 2172
25dbc73a
AM		 2173 datum = bfd_get_32 (ibfd, ptr + 8);
2174 if (datum != 0x2)
2175 goto fail;
252b5132 2176
25dbc73a
AM		 2177 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2178 goto fail;
252b5132 2179
25dbc73a
AM		 2180 /* Get the number of bytes used for apuinfo entries. */
2181 datum = bfd_get_32 (ibfd, ptr + 4);
2182 if (datum + 20 != length)
2183 goto fail;
2184
2185 /* Make sure that we do not run off the end of the section. */
2186 if (offset + length > output_section_size)
2187 goto fail;
2188
2189 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2190 for (i = 0; i < datum; i += 4)
2191 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2192
2193 /* Update the offset. */
2194 offset += length;
252b5132
RH		 2195 }
2196
25dbc73a 2197 error_message = NULL;
252b5132 2198
25dbc73a
AM		 2199 /* Compute the size of the output section. */
2200 num_entries = apuinfo_list_length ();
2201 output_section_size = 20 + num_entries * 4;
252b5132 2202
25dbc73a
AM		 2203 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2204
2205 if (! bfd_set_section_size (abfd, asec, output_section_size))
2206 ibfd = abfd,
2207 error_message = _("warning: unable to set size of %s section in %B");
2208
2209 fail:
2210 free (buffer);
2211
2212 if (error_message)
2213 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2214}
252b5132 2215
25dbc73a
AM		 2216/* Prevent the output section from accumulating the input sections'
2217 contents. We have already stored this in our linked list structure. */
252b5132 2218
25dbc73a
AM		 2219static bfd_boolean
2220ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2221 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM		 2222 asection *asec,
2223 bfd_byte *contents ATTRIBUTE_UNUSED)
2224{
2225 return (apuinfo_list_length ()
2226 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
252b5132
RH		 2227}
2228
25dbc73a
AM		 2229/* Finally we can generate the output section. */
2230
2231static void
2232ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2233{
25dbc73a
AM		 2234 bfd_byte *buffer;
2235 asection *asec;
2236 unsigned i;
2237 unsigned num_entries;
2238 bfd_size_type length;
7619e7c7 2239
25dbc73a
AM		 2240 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2241 if (asec == NULL)
2242 return;
2243
2244 if (apuinfo_list_length () == 0)
2245 return;
2246
2247 length = asec->size;
2248 if (length < 20)
2249 return;
2250
2251 buffer = bfd_malloc (length);
2252 if (buffer == NULL)
7619e7c7 2253 {
25dbc73a
AM		 2254 (*_bfd_error_handler)
2255 (_("failed to allocate space for new APUinfo section."));
2256 return;
7619e7c7 2257 }
7619e7c7 2258
25dbc73a
AM		 2259 /* Create the apuinfo header. */
2260 num_entries = apuinfo_list_length ();
2261 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2262 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2263 bfd_put_32 (abfd, 0x2, buffer + 8);
2264 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2265
25dbc73a
AM		 2266 length = 20;
2267 for (i = 0; i < num_entries; i++)
feee612b 2268 {
25dbc73a
AM		 2269 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2270 length += 4;
feee612b 2271 }
feee612b 2272
25dbc73a
AM		 2273 if (length != asec->size)
2274 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2275
25dbc73a
AM		 2276 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2277 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2278
25dbc73a
AM		 2279 free (buffer);
2280
2281 apuinfo_list_finish ();
252b5132 2282}
25dbc73a
AM		 2283\f
2284/* The following functions are specific to the ELF linker, while
2285 functions above are used generally. They appear in this file more
2286 or less in the order in which they are called. eg.
2287 ppc_elf_check_relocs is called early in the link process,
2288 ppc_elf_finish_dynamic_sections is one of the last functions
2289 called. */
252b5132 2290
25dbc73a
AM		 2291/* The PPC linker needs to keep track of the number of relocs that it
2292 decides to copy as dynamic relocs in check_relocs for each symbol.
2293 This is so that it can later discard them if they are found to be
2294 unnecessary. We store the information in a field extending the
2295 regular ELF linker hash table. */
ae9a127f 2296
25dbc73a 2297struct ppc_elf_dyn_relocs
252b5132 2298{
25dbc73a 2299 struct ppc_elf_dyn_relocs *next;
252b5132 2300
25dbc73a
AM		 2301 /* The input section of the reloc. */
2302 asection *sec;
252b5132 2303
25dbc73a
AM		 2304 /* Total number of relocs copied for the input section. */
2305 bfd_size_type count;
252b5132 2306
25dbc73a
AM		 2307 /* Number of pc-relative relocs copied for the input section. */
2308 bfd_size_type pc_count;
2309};
252b5132 2310
a6aa5195
AM		 2311/* Track PLT entries needed for a given symbol. We might need more
2312 than one glink entry per symbol. */
2313struct plt_entry
2314{
2315 struct plt_entry *next;
2316
2317 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2318 This field stores the offset into .got2 used to initialise the
2319 GOT pointer reg. It will always be at least 32768 (and for
2320 current gcc this is the only offset used). */
2321 bfd_vma addend;
2322
2323 /* The .got2 section. */
2324 asection *sec;
2325
2326 /* PLT refcount or offset. */
2327 union
2328 {
2329 bfd_signed_vma refcount;
2330 bfd_vma offset;
2331 } plt;
2332
2333 /* .glink stub offset. */
2334 bfd_vma glink_offset;
2335};
2336
25dbc73a
AM		 2337/* Of those relocs that might be copied as dynamic relocs, this macro
2338 selects those that must be copied when linking a shared library,
2339 even when the symbol is local. */
252b5132 2340
25dbc73a
AM		 2341#define MUST_BE_DYN_RELOC(RTYPE) \
2342 ((RTYPE) != R_PPC_REL24 \
2343 && (RTYPE) != R_PPC_REL14 \
2344 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2345 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2346 && (RTYPE) != R_PPC_REL32)
252b5132 2347
25dbc73a
AM		 2348/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2349 copying dynamic variables from a shared lib into an app's dynbss
2350 section, and instead use a dynamic relocation to point into the
2351 shared lib. */
2352#define ELIMINATE_COPY_RELOCS 1
252b5132 2353
25dbc73a 2354/* PPC ELF linker hash entry. */
252b5132 2355
25dbc73a
AM		 2356struct ppc_elf_link_hash_entry
2357{
2358 struct elf_link_hash_entry elf;
252b5132 2359
25dbc73a
AM		 2360 /* If this symbol is used in the linker created sections, the processor
2361 specific backend uses this field to map the field into the offset
2362 from the beginning of the section. */
2363 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 2364
25dbc73a
AM		 2365 /* Track dynamic relocs copied for this symbol. */
2366 struct ppc_elf_dyn_relocs *dyn_relocs;
252b5132 2367
25dbc73a
AM		 2368 /* Contexts in which symbol is used in the GOT (or TOC).
2369 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2370 corresponding relocs are encountered during check_relocs.
2371 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2372 indicate the corresponding GOT entry type is not needed. */
2373#define TLS_GD 1 /* GD reloc. */
2374#define TLS_LD 2 /* LD reloc. */
2375#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2376#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2377#define TLS_TLS 16 /* Any TLS reloc. */
2378#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2379 char tls_mask;
4dc4a9a5
DJ		 2380
2381 /* Nonzero if we have seen a small data relocation referring to this
2382 symbol. */
2383 unsigned char has_sda_refs;
25dbc73a 2384};
252b5132 2385
25dbc73a
AM		 2386#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2387
2388/* PPC ELF linker hash table. */
2389
2390struct ppc_elf_link_hash_table
2391{
2392 struct elf_link_hash_table elf;
2393
2394 /* Short-cuts to get to dynamic linker sections. */
2395 asection *got;
2396 asection *relgot;
d7128ce4 2397 asection *glink;
25dbc73a
AM		 2398 asection *plt;
2399 asection *relplt;
2400 asection *dynbss;
2401 asection *relbss;
2402 asection *dynsbss;
2403 asection *relsbss;
c9a2f333 2404 elf_linker_section_t sdata[2];
25dbc73a
AM		 2405 asection *sbss;
2406
016687f8
AM		 2407 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2408 asection *srelplt2;
2409
2410 /* The .got.plt section (VxWorks only)*/
2411 asection *sgotplt;
2412
25dbc73a
AM		 2413 /* Shortcut to .__tls_get_addr. */
2414 struct elf_link_hash_entry *tls_get_addr;
252b5132 2415
016687f8
AM		 2416 /* The bfd that forced an old-style PLT. */
2417 bfd *old_bfd;
2418
25dbc73a
AM		 2419 /* TLS local dynamic got entry handling. */
2420 union {
2421 bfd_signed_vma refcount;
2422 bfd_vma offset;
2423 } tlsld_got;
252b5132 2424
d7128ce4
AM		 2425 /* Offset of PltResolve function in glink. */
2426 bfd_vma glink_pltresolve;
2427
3b36f7e6
AM		 2428 /* Size of reserved GOT entries. */
2429 unsigned int got_header_size;
2430 /* Non-zero if allocating the header left a gap. */
2431 unsigned int got_gap;
2432
4a3dc543
RS		 2433 /* The type of PLT we have chosen to use. */
2434 enum ppc_elf_plt_type plt_type;
2435
0ba07910
AM		 2436 /* Set if we should emit symbols for stubs. */
2437 unsigned int emit_stub_syms:1;
2438
9d8504b1 2439 /* True if the target system is VxWorks. */
016687f8 2440 unsigned int is_vxworks:1;
9d8504b1
PB		 2441
2442 /* The size of PLT entries. */
2443 int plt_entry_size;
2444 /* The distance between adjacent PLT slots. */
2445 int plt_slot_size;
2446 /* The size of the first PLT entry. */
2447 int plt_initial_entry_size;
016687f8
AM		 2448
2449 /* Small local sym to section mapping cache. */
2450 struct sym_sec_cache sym_sec;
25dbc73a 2451};
252b5132 2452
25dbc73a 2453/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 2454
25dbc73a
AM		 2455#define ppc_elf_hash_table(p) \
2456 ((struct ppc_elf_link_hash_table *) (p)->hash)
252b5132 2457
25dbc73a 2458/* Create an entry in a PPC ELF linker hash table. */
252b5132 2459
25dbc73a
AM		 2460static struct bfd_hash_entry *
2461ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2462 struct bfd_hash_table *table,
2463 const char *string)
252b5132 2464{
25dbc73a
AM		 2465 /* Allocate the structure if it has not already been allocated by a
2466 subclass. */
2467 if (entry == NULL)
2468 {
2469 entry = bfd_hash_allocate (table,
2470 sizeof (struct ppc_elf_link_hash_entry));
2471 if (entry == NULL)
2472 return entry;
2473 }
252b5132 2474
25dbc73a
AM		 2475 /* Call the allocation method of the superclass. */
2476 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2477 if (entry != NULL)
2478 {
2479 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2480 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2481 ppc_elf_hash_entry (entry)->tls_mask = 0;
2482 }
252b5132 2483
25dbc73a 2484 return entry;
252b5132 2485}
3dab13f6 2486
25dbc73a 2487/* Create a PPC ELF linker hash table. */
3dab13f6 2488
25dbc73a
AM		 2489static struct bfd_link_hash_table *
2490ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 2491{
25dbc73a 2492 struct ppc_elf_link_hash_table *ret;
3dab13f6 2493
25dbc73a
AM		 2494 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2495 if (ret == NULL)
2496 return NULL;
3dab13f6 2497
66eb6687
AM		 2498 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2499 ppc_elf_link_hash_newfunc,
2500 sizeof (struct ppc_elf_link_hash_entry)))
3dab13f6 2501 {
25dbc73a
AM		 2502 free (ret);
2503 return NULL;
2504 }
58111eb7 2505
a6aa5195
AM		 2506 ret->elf.init_plt_refcount.refcount = 0;
2507 ret->elf.init_plt_refcount.glist = NULL;
2508 ret->elf.init_plt_offset.offset = 0;
2509 ret->elf.init_plt_offset.glist = NULL;
2510
c9a2f333
AM		 2511 ret->sdata[0].name = ".sdata";
2512 ret->sdata[0].sym_name = "_SDA_BASE_";
2513 ret->sdata[0].bss_name = ".sbss";
2514
2515 ret->sdata[1].name = ".sdata2";
2516 ret->sdata[1].sym_name = "_SDA2_BASE_";
2517 ret->sdata[1].bss_name = ".sbss2";
2518
9d8504b1
PB		 2519 ret->plt_entry_size = 12;
2520 ret->plt_slot_size = 8;
2521 ret->plt_initial_entry_size = 72;
9d8504b1 2522
25dbc73a
AM		 2523 return &ret->elf.root;
2524}
3dab13f6 2525
9d8504b1 2526/* Create .got and the related sections. */
3dab13f6 2527
25dbc73a
AM		 2528static bfd_boolean
2529ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2530{
2531 struct ppc_elf_link_hash_table *htab;
2532 asection *s;
2533 flagword flags;
3dab13f6 2534
25dbc73a
AM		 2535 if (!_bfd_elf_create_got_section (abfd, info))
2536 return FALSE;
3dab13f6 2537
25dbc73a
AM		 2538 htab = ppc_elf_hash_table (info);
2539 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2540 if (s == NULL)
2541 abort ();
3dab13f6 2542
9d8504b1
PB		 2543 if (htab->is_vxworks)
2544 {
2545 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2546 if (!htab->sgotplt)
2547 abort ();
2548 }
2549 else
2550 {
2551 /* The powerpc .got has a blrl instruction in it. Mark it
2552 executable. */
2553 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2554 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2555 if (!bfd_set_section_flags (abfd, s, flags))
2556 return FALSE;
2557 }
3dab13f6 2558
3b36f7e6
AM		 2559 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2560 | SEC_LINKER_CREATED | SEC_READONLY);
2561 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
25dbc73a 2562 if (!htab->relgot
25dbc73a
AM		 2563 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2564 return FALSE;
3dab13f6 2565
25dbc73a
AM		 2566 return TRUE;
2567}
3dab13f6 2568
25dbc73a
AM		 2569/* We have to create .dynsbss and .rela.sbss here so that they get mapped
2570 to output sections (just like _bfd_elf_create_dynamic_sections has
2571 to create .dynbss and .rela.bss). */
3dab13f6 2572
25dbc73a
AM		 2573static bfd_boolean
2574ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2575{
2576 struct ppc_elf_link_hash_table *htab;
2577 asection *s;
2578 flagword flags;
3dab13f6 2579
25dbc73a 2580 htab = ppc_elf_hash_table (info);
3dab13f6 2581
25dbc73a
AM		 2582 if (htab->got == NULL
2583 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM		 2584 return FALSE;
2585
25dbc73a
AM		 2586 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2587 return FALSE;
3dab13f6 2588
d7128ce4
AM		 2589 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2590 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2591
2592 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2593 htab->glink = s;
2594 if (s == NULL
2595 || !bfd_set_section_alignment (abfd, s, 4))
2596 return FALSE;
3dab13f6 2597
25dbc73a 2598 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
3b36f7e6
AM		 2599 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2600 SEC_ALLOC | SEC_LINKER_CREATED);
2601 htab->dynsbss = s;
3496cb2a 2602 if (s == NULL)
25dbc73a 2603 return FALSE;
3dab13f6 2604
25dbc73a
AM		 2605 if (! info->shared)
2606 {
2607 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
d7128ce4 2608 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 2609 htab->relsbss = s;
25dbc73a 2610 if (s == NULL
25dbc73a
AM		 2611 || ! bfd_set_section_alignment (abfd, s, 2))
2612 return FALSE;
2613 }
3dab13f6 2614
711de32c
RS		 2615 if (htab->is_vxworks
2616 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2617 return FALSE;
9d8504b1 2618
25dbc73a
AM		 2619 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2620 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2621 if (s == NULL)
2622 abort ();
3dab13f6 2623
3b36f7e6 2624 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS		 2625 if (htab->plt_type == PLT_VXWORKS)
2626 /* The VxWorks PLT is a loaded section with contents. */
2627 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM		 2628 return bfd_set_section_flags (abfd, s, flags);
2629}
3dab13f6 2630
25dbc73a 2631/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 2632
25dbc73a 2633static void
fcfa13d2 2634ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM		 2635 struct elf_link_hash_entry *dir,
2636 struct elf_link_hash_entry *ind)
2637{
2638 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 2639
25dbc73a
AM		 2640 edir = (struct ppc_elf_link_hash_entry *) dir;
2641 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 2642
25dbc73a
AM		 2643 if (eind->dyn_relocs != NULL)
2644 {
2645 if (edir->dyn_relocs != NULL)
3dab13f6 2646 {
25dbc73a
AM		 2647 struct ppc_elf_dyn_relocs **pp;
2648 struct ppc_elf_dyn_relocs *p;
3dab13f6 2649
fcfa13d2 2650 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM		 2651 list. Merge any entries against the same section. */
2652 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 2653 {
25dbc73a
AM		 2654 struct ppc_elf_dyn_relocs *q;
2655
2656 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2657 if (q->sec == p->sec)
2658 {
2659 q->pc_count += p->pc_count;
2660 q->count += p->count;
2661 *pp = p->next;
2662 break;
2663 }
2664 if (q == NULL)
2665 pp = &p->next;
3dab13f6 2666 }
25dbc73a 2667 *pp = edir->dyn_relocs;
3dab13f6 2668 }
25dbc73a
AM		 2669
2670 edir->dyn_relocs = eind->dyn_relocs;
2671 eind->dyn_relocs = NULL;
3dab13f6 2672 }
3dab13f6 2673
25dbc73a 2674 edir->tls_mask |= eind->tls_mask;
4dc4a9a5 2675 edir->has_sda_refs |= eind->has_sda_refs;
3dab13f6 2676
a6aa5195
AM		 2677 /* If called to transfer flags for a weakdef during processing
2678 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2679 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2680 if (!(ELIMINATE_COPY_RELOCS
2681 && eind->elf.root.type != bfd_link_hash_indirect
2682 && edir->elf.dynamic_adjusted))
2683 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2684
2685 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2686 edir->elf.ref_regular |= eind->elf.ref_regular;
2687 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2688 edir->elf.needs_plt |= eind->elf.needs_plt;
2689
2690 /* If we were called to copy over info for a weak sym, that's all. */
2691 if (eind->elf.root.type != bfd_link_hash_indirect)
2692 return;
2693
2694 /* Copy over the GOT refcount entries that we may have already seen to
2695 the symbol which just became indirect. */
fcfa13d2
AM		 2696 edir->elf.got.refcount += eind->elf.got.refcount;
2697 eind->elf.got.refcount = 0;
a6aa5195
AM		 2698
2699 /* And plt entries. */
2700 if (eind->elf.plt.plist != NULL)
2701 {
2702 if (edir->elf.plt.plist != NULL)
2703 {
2704 struct plt_entry **entp;
2705 struct plt_entry *ent;
2706
2707 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2708 {
2709 struct plt_entry *dent;
2710
2711 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2712 if (dent->sec == ent->sec && dent->addend == ent->addend)
2713 {
2714 dent->plt.refcount += ent->plt.refcount;
2715 *entp = ent->next;
2716 break;
2717 }
2718 if (dent == NULL)
2719 entp = &ent->next;
2720 }
2721 *entp = edir->elf.plt.plist;
2722 }
2723
2724 edir->elf.plt.plist = eind->elf.plt.plist;
2725 eind->elf.plt.plist = NULL;
2726 }
2727
fcfa13d2 2728 if (eind->elf.dynindx != -1)
25dbc73a 2729 {
fcfa13d2
AM		 2730 if (edir->elf.dynindx != -1)
2731 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2732 edir->elf.dynstr_index);
a6aa5195
AM		 2733 edir->elf.dynindx = eind->elf.dynindx;
2734 edir->elf.dynstr_index = eind->elf.dynstr_index;
2735 eind->elf.dynindx = -1;
2736 eind->elf.dynstr_index = 0;
25dbc73a 2737 }
25dbc73a 2738}
3dab13f6 2739
8853c3d3
AM		 2740/* Return 1 if target is one of ours. */
2741
2742static bfd_boolean
2743is_ppc_elf_target (const struct bfd_target *targ)
2744{
2745 extern const bfd_target bfd_elf32_powerpc_vec;
7c492719 2746 extern const bfd_target bfd_elf32_powerpc_vxworks_vec;
8853c3d3
AM		 2747 extern const bfd_target bfd_elf32_powerpcle_vec;
2748
7c492719
RS		 2749 return (targ == &bfd_elf32_powerpc_vec
2750 || targ == &bfd_elf32_powerpc_vxworks_vec
2751 || targ == &bfd_elf32_powerpcle_vec);
8853c3d3
AM		 2752}
2753
25dbc73a
AM		 2754/* Hook called by the linker routine which adds symbols from an object
2755 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 2756
25dbc73a
AM		 2757static bfd_boolean
2758ppc_elf_add_symbol_hook (bfd *abfd,
2759 struct bfd_link_info *info,
2760 Elf_Internal_Sym *sym,
2761 const char **namep ATTRIBUTE_UNUSED,
2762 flagword *flagsp ATTRIBUTE_UNUSED,
2763 asection **secp,
2764 bfd_vma *valp)
2765{
2766 if (sym->st_shndx == SHN_COMMON
2767 && !info->relocatable
2768 && sym->st_size <= elf_gp_size (abfd)
d2663f46 2769 && is_ppc_elf_target (info->hash->creator))
25dbc73a
AM		 2770 {
2771 /* Common symbols less than or equal to -G nn bytes are automatically
2772 put into .sbss. */
2773 struct ppc_elf_link_hash_table *htab;
3dab13f6 2774
25dbc73a
AM		 2775 htab = ppc_elf_hash_table (info);
2776 if (htab->sbss == NULL)
2777 {
644285ef 2778 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 2779
644285ef
AM		 2780 if (!htab->elf.dynobj)
2781 htab->elf.dynobj = abfd;
2782
3496cb2a
L		 2783 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2784 ".sbss",
2785 flags);
2786 if (htab->sbss == NULL)
25dbc73a 2787 return FALSE;
3dab13f6 2788 }
3dab13f6 2789
25dbc73a
AM		 2790 *secp = htab->sbss;
2791 *valp = sym->st_size;
2792 }
3dab13f6 2793
25dbc73a 2794 return TRUE;
3dab13f6
AM		 2795}
2796\f
046183de
AM		 2797static bfd_boolean
2798create_sdata_sym (struct ppc_elf_link_hash_table *htab,
2799 elf_linker_section_t *lsect)
2800{
2801 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
2802 TRUE, FALSE, TRUE);
2803 if (lsect->sym == NULL)
2804 return FALSE;
2805 if (lsect->sym->root.type == bfd_link_hash_new)
2806 lsect->sym->non_elf = 0;
2807 lsect->sym->ref_regular = 1;
2808 return TRUE;
2809}
2810
c9a2f333 2811/* Create a special linker section. */
25dbc73a 2812
c9a2f333 2813static bfd_boolean
55fd94b0
AM		 2814ppc_elf_create_linker_section (bfd *abfd,
2815 struct bfd_link_info *info,
c9a2f333
AM		 2816 flagword flags,
2817 elf_linker_section_t *lsect)
252b5132 2818{
58111eb7 2819 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 2820 asection *s;
58111eb7 2821
c9a2f333
AM		 2822 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2823 | SEC_LINKER_CREATED);
58111eb7
AM		 2824
2825 /* Record the first bfd that needs the special sections. */
2826 if (!htab->elf.dynobj)
2827 htab->elf.dynobj = abfd;
2828
3496cb2a
L		 2829 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2830 lsect->name,
2831 flags);
76750a2f 2832 if (s == NULL
76750a2f 2833 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 2834 return FALSE;
76750a2f 2835 lsect->section = s;
58111eb7 2836
046183de 2837 return create_sdata_sym (htab, lsect);
252b5132 2838}
252b5132 2839
25dbc73a
AM		 2840/* Find a linker generated pointer with a given addend and type. */
2841
2842static elf_linker_section_pointers_t *
2843elf_find_pointer_linker_section
2844 (elf_linker_section_pointers_t *linker_pointers,
2845 bfd_vma addend,
2846 elf_linker_section_t *lsect)
252b5132 2847{
25dbc73a
AM		 2848 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2849 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2850 return linker_pointers;
252b5132 2851
25dbc73a
AM		 2852 return NULL;
2853}
2854
2855/* Allocate a pointer to live in a linker created section. */
2856
2857static bfd_boolean
2858elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM		 2859 elf_linker_section_t *lsect,
2860 struct elf_link_hash_entry *h,
2861 const Elf_Internal_Rela *rel)
2862{
2863 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2864 elf_linker_section_pointers_t *linker_section_ptr;
2865 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2866 bfd_size_type amt;
2867
2868 BFD_ASSERT (lsect != NULL);
2869
2870 /* Is this a global symbol? */
2871 if (h != NULL)
2872 {
2873 struct ppc_elf_link_hash_entry *eh;
2874
2875 /* Has this symbol already been allocated? If so, our work is done. */
2876 eh = (struct ppc_elf_link_hash_entry *) h;
2877 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2878 rel->r_addend,
2879 lsect))
2880 return TRUE;
2881
2882 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM		 2883 }
2884 else
2885 {
2886 /* Allocation of a pointer to a local symbol. */
2887 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2888
2889 /* Allocate a table to hold the local symbols if first time. */
2890 if (!ptr)
2891 {
2892 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2893
2894 amt = num_symbols;
2895 amt *= sizeof (elf_linker_section_pointers_t *);
2896 ptr = bfd_zalloc (abfd, amt);
2897
2898 if (!ptr)
2899 return FALSE;
2900
2901 elf_local_ptr_offsets (abfd) = ptr;
2902 }
2903
2904 /* Has this symbol already been allocated? If so, our work is done. */
2905 if (elf_find_pointer_linker_section (ptr[r_symndx],
2906 rel->r_addend,
2907 lsect))
2908 return TRUE;
252b5132 2909
25dbc73a 2910 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 2911 }
41fcb14e 2912
25dbc73a
AM		 2913 /* Allocate space for a pointer in the linker section, and allocate
2914 a new pointer record from internal memory. */
2915 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2916 amt = sizeof (elf_linker_section_pointers_t);
2917 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 2918
25dbc73a 2919 if (!linker_section_ptr)
7619e7c7 2920 return FALSE;
41fcb14e 2921
25dbc73a
AM		 2922 linker_section_ptr->next = *ptr_linker_section_ptr;
2923 linker_section_ptr->addend = rel->r_addend;
2924 linker_section_ptr->lsect = lsect;
25dbc73a 2925 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 2926
25dbc73a
AM		 2927 linker_section_ptr->offset = lsect->section->size;
2928 lsect->section->size += 4;
7619e7c7 2929
25dbc73a
AM		 2930#ifdef DEBUG
2931 fprintf (stderr,
2932 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2933 lsect->name, (long) linker_section_ptr->offset,
2934 (long) lsect->section->size);
2935#endif
7619e7c7
AM		 2936
2937 return TRUE;
41fcb14e
AM		 2938}
2939
b34976b6 2940static bfd_boolean
25dbc73a
AM		 2941update_local_sym_info (bfd *abfd,
2942 Elf_Internal_Shdr *symtab_hdr,
2943 unsigned long r_symndx,
2944 int tls_type)
252b5132 2945{
25dbc73a
AM		 2946 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2947 char *local_got_tls_masks;
252b5132 2948
25dbc73a 2949 if (local_got_refcounts == NULL)
252b5132 2950 {
25dbc73a
AM		 2951 bfd_size_type size = symtab_hdr->sh_info;
2952
2953 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2954 local_got_refcounts = bfd_zalloc (abfd, size);
2955 if (local_got_refcounts == NULL)
b34976b6 2956 return FALSE;
25dbc73a 2957 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 2958 }
41fcb14e 2959
25dbc73a
AM		 2960 local_got_refcounts[r_symndx] += 1;
2961 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2962 local_got_tls_masks[r_symndx] |= tls_type;
2963 return TRUE;
2964}
41fcb14e 2965
a6aa5195
AM		 2966static bfd_boolean
2967update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2968 asection *sec, bfd_vma addend)
2969{
2970 struct plt_entry *ent;
2971
2972 if (addend < 32768)
2973 sec = NULL;
2974 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2975 if (ent->sec == sec && ent->addend == addend)
2976 break;
2977 if (ent == NULL)
2978 {
2979 bfd_size_type amt = sizeof (*ent);
2980 ent = bfd_alloc (abfd, amt);
2981 if (ent == NULL)
2982 return FALSE;
2983 ent->next = h->plt.plist;
2984 ent->sec = sec;
2985 ent->addend = addend;
2986 ent->plt.refcount = 0;
2987 h->plt.plist = ent;
2988 }
2989 ent->plt.refcount += 1;
2990 return TRUE;
2991}
2992
2993static struct plt_entry *
2994find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
2995{
2996 struct plt_entry *ent;
2997
2998 if (addend < 32768)
2999 sec = NULL;
3000 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3001 if (ent->sec == sec && ent->addend == addend)
3002 break;
3003 return ent;
3004}
3005
25dbc73a
AM		 3006static void
3007bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3008{
3009 (*_bfd_error_handler)
3010 (_("%B: relocation %s cannot be used when making a shared object"),
3011 abfd,
3012 ppc_elf_howto_table[r_type]->name);
3013 bfd_set_error (bfd_error_bad_value);
252b5132
RH		 3014}
3015
25dbc73a
AM		 3016/* Look through the relocs for a section during the first phase, and
3017 allocate space in the global offset table or procedure linkage
3018 table. */
252b5132 3019
b34976b6 3020static bfd_boolean
25dbc73a
AM		 3021ppc_elf_check_relocs (bfd *abfd,
3022 struct bfd_link_info *info,
3023 asection *sec,
3024 const Elf_Internal_Rela *relocs)
252b5132 3025{
7619e7c7 3026 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM		 3027 Elf_Internal_Shdr *symtab_hdr;
3028 struct elf_link_hash_entry **sym_hashes;
3029 const Elf_Internal_Rela *rel;
3030 const Elf_Internal_Rela *rel_end;
a6aa5195 3031 asection *got2, *sreloc;
25dbc73a
AM		 3032
3033 if (info->relocatable)
3034 return TRUE;
252b5132 3035
c87b5a93
AM		 3036 /* Don't do anything special with non-loaded, non-alloced sections.
3037 In particular, any relocs in such sections should not affect GOT
3038 and PLT reference counting (ie. we don't allow them to create GOT
3039 or PLT entries), there's no possibility or desire to optimize TLS
3040 relocs, and there's not much point in propagating relocs to shared
3041 libs that the dynamic linker won't relocate. */
3042 if ((sec->flags & SEC_ALLOC) == 0)
3043 return TRUE;
3044
252b5132 3045#ifdef DEBUG
25dbc73a
AM		 3046 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3047 sec, abfd);
252b5132
RH		 3048#endif
3049
25dbc73a
AM		 3050 /* Initialize howto table if not already done. */
3051 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3052 ppc_elf_howto_init ();
3053
7619e7c7 3054 htab = ppc_elf_hash_table (info);
25dbc73a
AM		 3055 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3056 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3057 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM		 3058 sreloc = NULL;
3059
3060 rel_end = relocs + sec->reloc_count;
3061 for (rel = relocs; rel < rel_end; rel++)
3062 {
3063 unsigned long r_symndx;
3064 enum elf_ppc_reloc_type r_type;
3065 struct elf_link_hash_entry *h;
3066 int tls_type = 0;
3067
3068 r_symndx = ELF32_R_SYM (rel->r_info);
3069 if (r_symndx < symtab_hdr->sh_info)
3070 h = NULL;
3071 else
973a3492
L		 3072 {
3073 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3074 while (h->root.type == bfd_link_hash_indirect
3075 || h->root.type == bfd_link_hash_warning)
3076 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3077 }
25dbc73a
AM		 3078
3079 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3080 This shows up in particular in an R_PPC_ADDR32 in the eabi
3081 startup code. */
3b36f7e6
AM		 3082 if (h != NULL
3083 && htab->got == NULL
3084 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3085 {
3b36f7e6
AM		 3086 if (htab->elf.dynobj == NULL)
3087 htab->elf.dynobj = abfd;
3088 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3089 return FALSE;
3090 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3091 }
252b5132 3092
25dbc73a
AM		 3093 r_type = ELF32_R_TYPE (rel->r_info);
3094 switch (r_type)
3095 {
3096 case R_PPC_GOT_TLSLD16:
3097 case R_PPC_GOT_TLSLD16_LO:
3098 case R_PPC_GOT_TLSLD16_HI:
3099 case R_PPC_GOT_TLSLD16_HA:
3100 htab->tlsld_got.refcount += 1;
3101 tls_type = TLS_TLS | TLS_LD;
3102 goto dogottls;
252b5132 3103
25dbc73a
AM		 3104 case R_PPC_GOT_TLSGD16:
3105 case R_PPC_GOT_TLSGD16_LO:
3106 case R_PPC_GOT_TLSGD16_HI:
3107 case R_PPC_GOT_TLSGD16_HA:
3108 tls_type = TLS_TLS | TLS_GD;
3109 goto dogottls;
3110
3111 case R_PPC_GOT_TPREL16:
3112 case R_PPC_GOT_TPREL16_LO:
3113 case R_PPC_GOT_TPREL16_HI:
3114 case R_PPC_GOT_TPREL16_HA:
3115 if (info->shared)
3116 info->flags |= DF_STATIC_TLS;
3117 tls_type = TLS_TLS | TLS_TPREL;
3118 goto dogottls;
3119
3120 case R_PPC_GOT_DTPREL16:
3121 case R_PPC_GOT_DTPREL16_LO:
3122 case R_PPC_GOT_DTPREL16_HI:
3123 case R_PPC_GOT_DTPREL16_HA:
3124 tls_type = TLS_TLS | TLS_DTPREL;
3125 dogottls:
3126 sec->has_tls_reloc = 1;
3127 /* Fall thru */
252b5132 3128
25dbc73a
AM		 3129 /* GOT16 relocations */
3130 case R_PPC_GOT16:
3131 case R_PPC_GOT16_LO:
3132 case R_PPC_GOT16_HI:
3133 case R_PPC_GOT16_HA:
3134 /* This symbol requires a global offset table entry. */
3135 if (htab->got == NULL)
3136 {
3137 if (htab->elf.dynobj == NULL)
3138 htab->elf.dynobj = abfd;
3139 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3140 return FALSE;
3141 }
3142 if (h != NULL)
3143 {
3144 h->got.refcount += 1;
3145 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3146 }
3147 else
3148 /* This is a global offset table entry for a local symbol. */
3149 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3150 return FALSE;
3151 break;
252b5132 3152
25dbc73a
AM		 3153 /* Indirect .sdata relocation. */
3154 case R_PPC_EMB_SDAI16:
3155 if (info->shared)
3156 {
3157 bad_shared_reloc (abfd, r_type);
3158 return FALSE;
3159 }
c9a2f333
AM		 3160 if (htab->sdata[0].section == NULL
3161 && !ppc_elf_create_linker_section (abfd, info, 0,
3162 &htab->sdata[0]))
3163 return FALSE;
76750a2f
AM		 3164 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3165 h, rel))
25dbc73a 3166 return FALSE;
046183de
AM		 3167 if (h != NULL)
3168 {
3169 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3170 h->non_got_ref = TRUE;
3171 }
25dbc73a 3172 break;
252b5132 3173
25dbc73a
AM		 3174 /* Indirect .sdata2 relocation. */
3175 case R_PPC_EMB_SDA2I16:
3176 if (info->shared)
3177 {
3178 bad_shared_reloc (abfd, r_type);
3179 return FALSE;
3180 }
c9a2f333
AM		 3181 if (htab->sdata[1].section == NULL
3182 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3183 &htab->sdata[1]))
3184 return FALSE;
76750a2f
AM		 3185 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3186 h, rel))
25dbc73a 3187 return FALSE;
046183de
AM		 3188 if (h != NULL)
3189 {
3190 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3191 h->non_got_ref = TRUE;
3192 }
25dbc73a 3193 break;
252b5132 3194
25dbc73a 3195 case R_PPC_SDAREL16:
046183de
AM		 3196 if (info->shared)
3197 {
3198 bad_shared_reloc (abfd, r_type);
3199 return FALSE;
3200 }
3201 if (htab->sdata[0].sym == NULL
3202 && !create_sdata_sym (htab, &htab->sdata[0]))
3203 return FALSE;
3204 if (h != NULL)
3205 {
3206 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3207 h->non_got_ref = TRUE;
3208 }
3209 break;
3210
25dbc73a 3211 case R_PPC_EMB_SDA2REL:
046183de
AM		 3212 if (info->shared)
3213 {
3214 bad_shared_reloc (abfd, r_type);
3215 return FALSE;
3216 }
3217 if (htab->sdata[1].sym == NULL
3218 && !create_sdata_sym (htab, &htab->sdata[1]))
3219 return FALSE;
3220 if (h != NULL)
3221 {
3222 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3223 h->non_got_ref = TRUE;
3224 }
3225 break;
3226
25dbc73a
AM		 3227 case R_PPC_EMB_SDA21:
3228 case R_PPC_EMB_RELSDA:
046183de
AM		 3229 if (info->shared)
3230 {
3231 bad_shared_reloc (abfd, r_type);
3232 return FALSE;
3233 }
3234 if (htab->sdata[0].sym == NULL
3235 && !create_sdata_sym (htab, &htab->sdata[0]))
3236 return FALSE;
3237 if (htab->sdata[1].sym == NULL
3238 && !create_sdata_sym (htab, &htab->sdata[1]))
3239 return FALSE;
3240 if (h != NULL)
3241 {
3242 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3243 h->non_got_ref = TRUE;
3244 }
3245 break;
3246
25dbc73a
AM		 3247 case R_PPC_EMB_NADDR32:
3248 case R_PPC_EMB_NADDR16:
3249 case R_PPC_EMB_NADDR16_LO:
3250 case R_PPC_EMB_NADDR16_HI:
3251 case R_PPC_EMB_NADDR16_HA:
3252 if (info->shared)
3253 {
3254 bad_shared_reloc (abfd, r_type);
3255 return FALSE;
3256 }
4dc4a9a5 3257 if (h != NULL)
046183de 3258 h->non_got_ref = TRUE;
25dbc73a 3259 break;
252b5132 3260
25dbc73a
AM		 3261 case R_PPC_PLT32:
3262 case R_PPC_PLTREL24:
3263 case R_PPC_PLTREL32:
3264 case R_PPC_PLT16_LO:
3265 case R_PPC_PLT16_HI:
3266 case R_PPC_PLT16_HA:
3267#ifdef DEBUG
3268 fprintf (stderr, "Reloc requires a PLT entry\n");
3269#endif
3270 /* This symbol requires a procedure linkage table entry. We
3271 actually build the entry in finish_dynamic_symbol,
3272 because this might be a case of linking PIC code without
3273 linking in any dynamic objects, in which case we don't
3274 need to generate a procedure linkage table after all. */
7619e7c7 3275
25dbc73a
AM		 3276 if (h == NULL)
3277 {
3278 /* It does not make sense to have a procedure linkage
3279 table entry for a local symbol. */
3280 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3281 "local symbol"),
3282 abfd,
3283 sec,
3284 (long) rel->r_offset,
3285 ppc_elf_howto_table[r_type]->name);
3286 bfd_set_error (bfd_error_bad_value);
3287 return FALSE;
3288 }
a6aa5195
AM		 3289 else
3290 {
016687f8 3291 bfd_vma addend = 0;
ee05f2fe 3292
016687f8
AM		 3293 if (r_type == R_PPC_PLTREL24)
3294 {
3295 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3296 addend = rel->r_addend;
3297 }
a6aa5195
AM		 3298 h->needs_plt = 1;
3299 if (!update_plt_info (abfd, h, got2, addend))
3300 return FALSE;
3301 }
25dbc73a 3302 break;
ee05f2fe 3303
25dbc73a
AM		 3304 /* The following relocations don't need to propagate the
3305 relocation if linking a shared object since they are
3306 section relative. */
3307 case R_PPC_SECTOFF:
3308 case R_PPC_SECTOFF_LO:
3309 case R_PPC_SECTOFF_HI:
3310 case R_PPC_SECTOFF_HA:
3311 case R_PPC_DTPREL16:
3312 case R_PPC_DTPREL16_LO:
3313 case R_PPC_DTPREL16_HI:
3314 case R_PPC_DTPREL16_HA:
3315 case R_PPC_TOC16:
3316 break;
252b5132 3317
d7128ce4
AM		 3318 case R_PPC_REL16:
3319 case R_PPC_REL16_LO:
3320 case R_PPC_REL16_HI:
3321 case R_PPC_REL16_HA:
016687f8 3322 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM		 3323 break;
3324
a6aa5195 3325 /* These are just markers. */
25dbc73a
AM		 3326 case R_PPC_TLS:
3327 case R_PPC_EMB_MRKREF:
3328 case R_PPC_NONE:
3329 case R_PPC_max:
3330 break;
252b5132 3331
25dbc73a
AM		 3332 /* These should only appear in dynamic objects. */
3333 case R_PPC_COPY:
3334 case R_PPC_GLOB_DAT:
3335 case R_PPC_JMP_SLOT:
3336 case R_PPC_RELATIVE:
3337 break;
252b5132 3338
25dbc73a
AM		 3339 /* These aren't handled yet. We'll report an error later. */
3340 case R_PPC_ADDR30:
3341 case R_PPC_EMB_RELSEC16:
3342 case R_PPC_EMB_RELST_LO:
3343 case R_PPC_EMB_RELST_HI:
3344 case R_PPC_EMB_RELST_HA:
3345 case R_PPC_EMB_BIT_FLD:
3346 break;
252b5132 3347
25dbc73a
AM		 3348 /* This refers only to functions defined in the shared library. */
3349 case R_PPC_LOCAL24PC:
4a3dc543 3350 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM		 3351 {
3352 htab->plt_type = PLT_OLD;
3353 htab->old_bfd = abfd;
3354 }
25dbc73a 3355 break;
252b5132 3356
25dbc73a
AM		 3357 /* This relocation describes the C++ object vtable hierarchy.
3358 Reconstruct it for later use during GC. */
3359 case R_PPC_GNU_VTINHERIT:
3360 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3361 return FALSE;
3362 break;
252b5132 3363
25dbc73a
AM		 3364 /* This relocation describes which C++ vtable entries are actually
3365 used. Record for later use during GC. */
3366 case R_PPC_GNU_VTENTRY:
3367 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3368 return FALSE;
3369 break;
252b5132 3370
25dbc73a
AM		 3371 /* We shouldn't really be seeing these. */
3372 case R_PPC_TPREL32:
3373 if (info->shared)
3374 info->flags |= DF_STATIC_TLS;
3375 goto dodyn;
252b5132 3376
25dbc73a
AM		 3377 /* Nor these. */
3378 case R_PPC_DTPMOD32:
3379 case R_PPC_DTPREL32:
3380 goto dodyn;
252b5132 3381
25dbc73a
AM		 3382 case R_PPC_TPREL16:
3383 case R_PPC_TPREL16_LO:
3384 case R_PPC_TPREL16_HI:
3385 case R_PPC_TPREL16_HA:
3386 if (info->shared)
3387 info->flags |= DF_STATIC_TLS;
3388 goto dodyn;
ee05f2fe 3389
9edfd1af
AM		 3390 case R_PPC_REL32:
3391 if (h == NULL
3392 && got2 != NULL
3393 && (sec->flags & SEC_CODE) != 0
3394 && (info->shared || info->pie)
4a3dc543 3395 && htab->plt_type == PLT_UNSET)
9edfd1af
AM		 3396 {
3397 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3398 the start of a function, which assembles to a REL32
3399 reference to .got2. If we detect one of these, then
3400 force the old PLT layout because the linker cannot
3401 reliably deduce the GOT pointer value needed for
3402 PLT call stubs. */
3403 asection *s;
3404
3405 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3406 r_symndx);
3407 if (s == got2)
016687f8
AM		 3408 {
3409 htab->plt_type = PLT_OLD;
3410 htab->old_bfd = abfd;
3411 }
9edfd1af 3412 }
7123df0e 3413 if (h == NULL || h == htab->elf.hgot)
fd38b44c 3414 break;
7123df0e 3415 goto dodyn1;
9edfd1af 3416
25dbc73a
AM		 3417 case R_PPC_REL24:
3418 case R_PPC_REL14:
3419 case R_PPC_REL14_BRTAKEN:
3420 case R_PPC_REL14_BRNTAKEN:
d7128ce4 3421 if (h == NULL)
25dbc73a 3422 break;
7123df0e 3423 if (h == htab->elf.hgot)
d7128ce4 3424 {
7123df0e 3425 if (htab->plt_type == PLT_UNSET)
016687f8
AM		 3426 {
3427 htab->plt_type = PLT_OLD;
3428 htab->old_bfd = abfd;
3429 }
d7128ce4
AM		 3430 break;
3431 }
25dbc73a 3432 /* fall through */
ee05f2fe 3433
25dbc73a
AM		 3434 case R_PPC_ADDR32:
3435 case R_PPC_ADDR24:
3436 case R_PPC_ADDR16:
3437 case R_PPC_ADDR16_LO:
3438 case R_PPC_ADDR16_HI:
3439 case R_PPC_ADDR16_HA:
3440 case R_PPC_ADDR14:
3441 case R_PPC_ADDR14_BRTAKEN:
3442 case R_PPC_ADDR14_BRNTAKEN:
3443 case R_PPC_UADDR32:
3444 case R_PPC_UADDR16:
7123df0e 3445 dodyn1:
25dbc73a
AM		 3446 if (h != NULL && !info->shared)
3447 {
3448 /* We may need a plt entry if the symbol turns out to be
3449 a function defined in a dynamic object. */
a6aa5195
AM		 3450 if (!update_plt_info (abfd, h, NULL, 0))
3451 return FALSE;
7fce784e 3452
25dbc73a
AM		 3453 /* We may need a copy reloc too. */
3454 h->non_got_ref = 1;
3455 }
7619e7c7 3456
25dbc73a
AM		 3457 dodyn:
3458 /* If we are creating a shared library, and this is a reloc
3459 against a global symbol, or a non PC relative reloc
3460 against a local symbol, then we need to copy the reloc
3461 into the shared library. However, if we are linking with
3462 -Bsymbolic, we do not need to copy a reloc against a
3463 global symbol which is defined in an object we are
3464 including in the link (i.e., DEF_REGULAR is set). At
3465 this point we have not seen all the input files, so it is
3466 possible that DEF_REGULAR is not set now but will be set
3467 later (it is never cleared). In case of a weak definition,
3468 DEF_REGULAR may be cleared later by a strong definition in
3469 a shared library. We account for that possibility below by
3470 storing information in the dyn_relocs field of the hash
3471 table entry. A similar situation occurs when creating
3472 shared libraries and symbol visibility changes render the
3473 symbol local.
7619e7c7 3474
25dbc73a
AM		 3475 If on the other hand, we are creating an executable, we
3476 may need to keep relocations for symbols satisfied by a
3477 dynamic library if we manage to avoid copy relocs for the
3478 symbol. */
3479 if ((info->shared
3480 && (MUST_BE_DYN_RELOC (r_type)
3481 || (h != NULL
3482 && (! info->symbolic
3483 || h->root.type == bfd_link_hash_defweak
3484 || !h->def_regular))))
3485 || (ELIMINATE_COPY_RELOCS
3486 && !info->shared
25dbc73a
AM		 3487 && h != NULL
3488 && (h->root.type == bfd_link_hash_defweak
3489 || !h->def_regular)))
3490 {
3491 struct ppc_elf_dyn_relocs *p;
3492 struct ppc_elf_dyn_relocs **head;
7619e7c7 3493
25dbc73a
AM		 3494#ifdef DEBUG
3495 fprintf (stderr,
3496 "ppc_elf_check_relocs needs to "
3497 "create relocation for %s\n",
3498 (h && h->root.root.string
3499 ? h->root.root.string : "<unknown>"));
3500#endif
3501 if (sreloc == NULL)
3502 {
3503 const char *name;
7619e7c7 3504
25dbc73a
AM		 3505 name = (bfd_elf_string_from_elf_section
3506 (abfd,
3507 elf_elfheader (abfd)->e_shstrndx,
3508 elf_section_data (sec)->rel_hdr.sh_name));
3509 if (name == NULL)
3510 return FALSE;
7619e7c7 3511
0112cd26 3512 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
25dbc73a
AM		 3513 && strcmp (bfd_get_section_name (abfd, sec),
3514 name + 5) == 0);
7619e7c7 3515
c9a2f333
AM		 3516 if (htab->elf.dynobj == NULL)
3517 htab->elf.dynobj = abfd;
25dbc73a
AM		 3518 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3519 if (sreloc == NULL)
3520 {
3521 flagword flags;
7619e7c7 3522
25dbc73a 3523 flags = (SEC_HAS_CONTENTS | SEC_READONLY
c87b5a93
AM		 3524 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3525 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 3526 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3527 name,
3528 flags);
25dbc73a 3529 if (sreloc == NULL
25dbc73a
AM		 3530 || ! bfd_set_section_alignment (htab->elf.dynobj,
3531 sreloc, 2))
3532 return FALSE;
3533 }
3534 elf_section_data (sec)->sreloc = sreloc;
3535 }
7619e7c7 3536
25dbc73a
AM		 3537 /* If this is a global symbol, we count the number of
3538 relocations we need for this symbol. */
3539 if (h != NULL)
3540 {
3541 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3542 }
3543 else
3544 {
3545 /* Track dynamic relocs needed for local syms too.
3546 We really need local syms available to do this
3547 easily. Oh well. */
7619e7c7 3548
25dbc73a 3549 asection *s;
6edfbbad
DJ		 3550 void *vpp;
3551
25dbc73a
AM		 3552 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3553 sec, r_symndx);
3554 if (s == NULL)
3555 return FALSE;
7fce784e 3556
6edfbbad
DJ		 3557 vpp = &elf_section_data (s)->local_dynrel;
3558 head = (struct ppc_elf_dyn_relocs **) vpp;
25dbc73a 3559 }
7fce784e 3560
25dbc73a
AM		 3561 p = *head;
3562 if (p == NULL || p->sec != sec)
3563 {
3564 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3565 if (p == NULL)
3566 return FALSE;
3567 p->next = *head;
3568 *head = p;
3569 p->sec = sec;
3570 p->count = 0;
3571 p->pc_count = 0;
3572 }
3573
3574 p->count += 1;
3575 if (!MUST_BE_DYN_RELOC (r_type))
3576 p->pc_count += 1;
7619e7c7 3577 }
25dbc73a
AM		 3578
3579 break;
7619e7c7
AM		 3580 }
3581 }
ee05f2fe 3582
25dbc73a
AM		 3583 return TRUE;
3584}
3585\f
8853c3d3
AM		 3586/* Merge backend specific data from an object file to the output
3587 object file when linking. */
3588
3589static bfd_boolean
3590ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3591{
3592 flagword old_flags;
3593 flagword new_flags;
3594 bfd_boolean error;
3595
3596 if (!is_ppc_elf_target (ibfd->xvec)
3597 || !is_ppc_elf_target (obfd->xvec))
3598 return TRUE;
3599
3600 /* Check if we have the same endianess. */
3601 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3602 return FALSE;
3603
3604 new_flags = elf_elfheader (ibfd)->e_flags;
3605 old_flags = elf_elfheader (obfd)->e_flags;
3606 if (!elf_flags_init (obfd))
3607 {
3608 /* First call, no flags set. */
3609 elf_flags_init (obfd) = TRUE;
3610 elf_elfheader (obfd)->e_flags = new_flags;
3611 }
3612
3613 /* Compatible flags are ok. */
3614 else if (new_flags == old_flags)
3615 ;
3616
3617 /* Incompatible flags. */
3618 else
3619 {
3620 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3621 to be linked with either. */
3622 error = FALSE;
3623 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3624 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3625 {
3626 error = TRUE;
3627 (*_bfd_error_handler)
3628 (_("%B: compiled with -mrelocatable and linked with "
3629 "modules compiled normally"), ibfd);
3630 }
3631 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3632 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3633 {
3634 error = TRUE;
3635 (*_bfd_error_handler)
3636 (_("%B: compiled normally and linked with "
3637 "modules compiled with -mrelocatable"), ibfd);
3638 }
3639
3640 /* The output is -mrelocatable-lib iff both the input files are. */
3641 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3642 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3643
3644 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3645 but each input file is either -mrelocatable or -mrelocatable-lib. */
3646 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3647 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3648 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3649 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3650
3651 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3652 any module uses it. */
3653 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3654
3655 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3656 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3657
3658 /* Warn about any other mismatches. */
3659 if (new_flags != old_flags)
3660 {
3661 error = TRUE;
3662 (*_bfd_error_handler)
3663 (_("%B: uses different e_flags (0x%lx) fields "
3664 "than previous modules (0x%lx)"),
3665 ibfd, (long) new_flags, (long) old_flags);
3666 }
3667
3668 if (error)
3669 {
3670 bfd_set_error (bfd_error_bad_value);
3671 return FALSE;
3672 }
3673 }
3674
3675 return TRUE;
3676}
3677\f
d7128ce4
AM		 3678/* Choose which PLT scheme to use, and set .plt flags appropriately.
3679 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3680int
3681ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3682 struct bfd_link_info *info,
016687f8 3683 enum ppc_elf_plt_type plt_style,
0ba07910 3684 int emit_stub_syms)
d7128ce4
AM		 3685{
3686 struct ppc_elf_link_hash_table *htab;
9d8504b1 3687 flagword flags;
d7128ce4
AM		 3688
3689 htab = ppc_elf_hash_table (info);
4a3dc543
RS		 3690
3691 if (htab->plt_type == PLT_UNSET)
016687f8
AM		 3692 {
3693 if (plt_style == PLT_OLD)
3694 htab->plt_type = PLT_OLD;
3695 else
3696 {
3697 bfd *ibfd;
3698 enum ppc_elf_plt_type plt_type = plt_style;
3699
3700 /* Look through the reloc flags left by ppc_elf_check_relocs.
3701 Use the old style bss plt if a file makes plt calls
3702 without using the new relocs, and if ld isn't given
3703 --secure-plt and we never see REL16 relocs. */
3704 if (plt_type == PLT_UNSET)
3705 plt_type = PLT_OLD;
3706 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->next)
3707 if (is_ppc_elf_target (ibfd->xvec))
3708 {
3709 if (ppc_elf_tdata (ibfd)->has_rel16)
3710 plt_type = PLT_NEW;
3711 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
3712 {
3713 plt_type = PLT_OLD;
3714 htab->old_bfd = ibfd;
3715 break;
3716 }
3717 }
3718 htab->plt_type = plt_type;
3719 }
3720 }
3721 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
3722 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
d7128ce4 3723
0ba07910
AM		 3724 htab->emit_stub_syms = emit_stub_syms;
3725
4a3dc543 3726 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 3727
4a3dc543 3728 if (htab->plt_type == PLT_NEW)
9d8504b1
PB		 3729 {
3730 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3731 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM		 3732
3733 /* The new PLT is a loaded section. */
3734 if (htab->plt != NULL
3735 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3736 return -1;
3737
3738 /* The new GOT is not executable. */
3739 if (htab->got != NULL
3740 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3741 return -1;
d7128ce4
AM		 3742 }
3743 else
3744 {
3745 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM		 3746 if (htab->glink != NULL
3747 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3748 return -1;
d7128ce4 3749 }
4a3dc543 3750 return htab->plt_type == PLT_NEW;
d7128ce4
AM		 3751}
3752\f
25dbc73a
AM		 3753/* Return the section that should be marked against GC for a given
3754 relocation. */
586119b3 3755
25dbc73a
AM		 3756static asection *
3757ppc_elf_gc_mark_hook (asection *sec,
07adf181 3758 struct bfd_link_info *info,
25dbc73a
AM		 3759 Elf_Internal_Rela *rel,
3760 struct elf_link_hash_entry *h,
3761 Elf_Internal_Sym *sym)
3762{
3763 if (h != NULL)
07adf181
AM		 3764 switch (ELF32_R_TYPE (rel->r_info))
3765 {
3766 case R_PPC_GNU_VTINHERIT:
3767 case R_PPC_GNU_VTENTRY:
3768 return NULL;
3769 }
3770
3771 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 3772}
a876ecf9 3773
25dbc73a
AM		 3774/* Update the got, plt and dynamic reloc reference counts for the
3775 section being removed. */
3776
3777static bfd_boolean
3778ppc_elf_gc_sweep_hook (bfd *abfd,
3779 struct bfd_link_info *info,
3780 asection *sec,
3781 const Elf_Internal_Rela *relocs)
3782{
3783 struct ppc_elf_link_hash_table *htab;
3784 Elf_Internal_Shdr *symtab_hdr;
3785 struct elf_link_hash_entry **sym_hashes;
3786 bfd_signed_vma *local_got_refcounts;
3787 const Elf_Internal_Rela *rel, *relend;
a6aa5195 3788 asection *got2;
25dbc73a 3789
c87b5a93
AM		 3790 if ((sec->flags & SEC_ALLOC) == 0)
3791 return TRUE;
3792
25dbc73a
AM		 3793 elf_section_data (sec)->local_dynrel = NULL;
3794
3795 htab = ppc_elf_hash_table (info);
3796 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3797 sym_hashes = elf_sym_hashes (abfd);
3798 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 3799 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM		 3800
3801 relend = relocs + sec->reloc_count;
3802 for (rel = relocs; rel < relend; rel++)
3803 {
3804 unsigned long r_symndx;
3805 enum elf_ppc_reloc_type r_type;
3806 struct elf_link_hash_entry *h = NULL;
3807
3808 r_symndx = ELF32_R_SYM (rel->r_info);
3809 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 3810 {
25dbc73a
AM		 3811 struct ppc_elf_dyn_relocs **pp, *p;
3812 struct ppc_elf_link_hash_entry *eh;
3813
3814 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3815 while (h->root.type == bfd_link_hash_indirect
3816 || h->root.type == bfd_link_hash_warning)
3817 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3818 eh = (struct ppc_elf_link_hash_entry *) h;
3819
3820 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3821 if (p->sec == sec)
3822 {
3823 /* Everything must go for SEC. */
3824 *pp = p->next;
3825 break;
3826 }
a876ecf9 3827 }
ee05f2fe 3828
25dbc73a
AM		 3829 r_type = ELF32_R_TYPE (rel->r_info);
3830 switch (r_type)
ee05f2fe 3831 {
25dbc73a
AM		 3832 case R_PPC_GOT_TLSLD16:
3833 case R_PPC_GOT_TLSLD16_LO:
3834 case R_PPC_GOT_TLSLD16_HI:
3835 case R_PPC_GOT_TLSLD16_HA:
3836 htab->tlsld_got.refcount -= 1;
3837 /* Fall thru */
3838
3839 case R_PPC_GOT_TLSGD16:
3840 case R_PPC_GOT_TLSGD16_LO:
3841 case R_PPC_GOT_TLSGD16_HI:
3842 case R_PPC_GOT_TLSGD16_HA:
3843 case R_PPC_GOT_TPREL16:
3844 case R_PPC_GOT_TPREL16_LO:
3845 case R_PPC_GOT_TPREL16_HI:
3846 case R_PPC_GOT_TPREL16_HA:
3847 case R_PPC_GOT_DTPREL16:
3848 case R_PPC_GOT_DTPREL16_LO:
3849 case R_PPC_GOT_DTPREL16_HI:
3850 case R_PPC_GOT_DTPREL16_HA:
3851 case R_PPC_GOT16:
3852 case R_PPC_GOT16_LO:
3853 case R_PPC_GOT16_HI:
3854 case R_PPC_GOT16_HA:
3855 if (h != NULL)
ee05f2fe 3856 {
25dbc73a
AM		 3857 if (h->got.refcount > 0)
3858 h->got.refcount--;
ee05f2fe 3859 }
25dbc73a
AM		 3860 else if (local_got_refcounts != NULL)
3861 {
3862 if (local_got_refcounts[r_symndx] > 0)
3863 local_got_refcounts[r_symndx]--;
3864 }
3865 break;
ee05f2fe 3866
25dbc73a
AM		 3867 case R_PPC_REL24:
3868 case R_PPC_REL14:
3869 case R_PPC_REL14_BRTAKEN:
3870 case R_PPC_REL14_BRNTAKEN:
3871 case R_PPC_REL32:
3b36f7e6 3872 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM		 3873 break;
3874 /* Fall thru */
ee05f2fe 3875
25dbc73a
AM		 3876 case R_PPC_ADDR32:
3877 case R_PPC_ADDR24:
3878 case R_PPC_ADDR16:
3879 case R_PPC_ADDR16_LO:
3880 case R_PPC_ADDR16_HI:
3881 case R_PPC_ADDR16_HA:
3882 case R_PPC_ADDR14:
3883 case R_PPC_ADDR14_BRTAKEN:
3884 case R_PPC_ADDR14_BRNTAKEN:
3885 case R_PPC_UADDR32:
3886 case R_PPC_UADDR16:
87538722
AM		 3887 if (info->shared)
3888 break;
3889
25dbc73a
AM		 3890 case R_PPC_PLT32:
3891 case R_PPC_PLTREL24:
87538722 3892 case R_PPC_PLTREL32:
25dbc73a
AM		 3893 case R_PPC_PLT16_LO:
3894 case R_PPC_PLT16_HI:
3895 case R_PPC_PLT16_HA:
3896 if (h != NULL)
3897 {
a6aa5195
AM		 3898 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3899 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3900 if (ent->plt.refcount > 0)
3901 ent->plt.refcount -= 1;
25dbc73a
AM		 3902 }
3903 break;
ee05f2fe 3904
25dbc73a
AM		 3905 default:
3906 break;
3907 }
7fce784e 3908 }
7fce784e
AS		 3909 return TRUE;
3910}
25dbc73a
AM		 3911\f
3912/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7fce784e 3913
25dbc73a
AM		 3914asection *
3915ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 3916{
25dbc73a 3917 struct ppc_elf_link_hash_table *htab;
7fce784e 3918
25dbc73a 3919 htab = ppc_elf_hash_table (info);
4a3dc543 3920 if (htab->plt_type == PLT_NEW
d7128ce4
AM		 3921 && htab->plt != NULL
3922 && htab->plt->output_section != NULL)
3923 {
3924 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3925 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3926 }
3927
25dbc73a
AM		 3928 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3929 FALSE, FALSE, TRUE);
25dbc73a 3930 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS		 3931}
3932
25dbc73a
AM		 3933/* Run through all the TLS relocs looking for optimization
3934 opportunities. */
252b5132 3935
25dbc73a
AM		 3936bfd_boolean
3937ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3938 struct bfd_link_info *info)
252b5132 3939{
7fce784e 3940 bfd *ibfd;
25dbc73a
AM		 3941 asection *sec;
3942 struct ppc_elf_link_hash_table *htab;
252b5132 3943
25dbc73a
AM		 3944 if (info->relocatable || info->shared)
3945 return TRUE;
252b5132 3946
7619e7c7 3947 htab = ppc_elf_hash_table (info);
25dbc73a 3948 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
252b5132 3949 {
25dbc73a
AM		 3950 Elf_Internal_Sym *locsyms = NULL;
3951 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7619e7c7 3952
25dbc73a
AM		 3953 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3954 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3955 {
3956 Elf_Internal_Rela *relstart, *rel, *relend;
3957 int expecting_tls_get_addr;
252b5132 3958
25dbc73a
AM		 3959 /* Read the relocations. */
3960 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3961 info->keep_memory);
3962 if (relstart == NULL)
3963 return FALSE;
7619e7c7 3964
25dbc73a
AM		 3965 expecting_tls_get_addr = 0;
3966 relend = relstart + sec->reloc_count;
3967 for (rel = relstart; rel < relend; rel++)
3968 {
3969 enum elf_ppc_reloc_type r_type;
3970 unsigned long r_symndx;
3971 struct elf_link_hash_entry *h = NULL;
3972 char *tls_mask;
3973 char tls_set, tls_clear;
3974 bfd_boolean is_local;
7fce784e 3975
25dbc73a
AM		 3976 r_symndx = ELF32_R_SYM (rel->r_info);
3977 if (r_symndx >= symtab_hdr->sh_info)
3978 {
3979 struct elf_link_hash_entry **sym_hashes;
7fce784e 3980
25dbc73a
AM		 3981 sym_hashes = elf_sym_hashes (ibfd);
3982 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3983 while (h->root.type == bfd_link_hash_indirect
3984 || h->root.type == bfd_link_hash_warning)
3985 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3986 }
7619e7c7 3987
25dbc73a
AM		 3988 is_local = FALSE;
3989 if (h == NULL
3990 || !h->def_dynamic)
3991 is_local = TRUE;
7619e7c7 3992
25dbc73a
AM		 3993 r_type = ELF32_R_TYPE (rel->r_info);
3994 switch (r_type)
7619e7c7 3995 {
25dbc73a
AM		 3996 case R_PPC_GOT_TLSLD16:
3997 case R_PPC_GOT_TLSLD16_LO:
3998 case R_PPC_GOT_TLSLD16_HI:
3999 case R_PPC_GOT_TLSLD16_HA:
4000 /* These relocs should never be against a symbol
4001 defined in a shared lib. Leave them alone if
4002 that turns out to be the case. */
4003 expecting_tls_get_addr = 0;
4004 htab->tlsld_got.refcount -= 1;
4005 if (!is_local)
4006 continue;
4007
4008 /* LD -> LE */
4009 tls_set = 0;
4010 tls_clear = TLS_LD;
4011 expecting_tls_get_addr = 1;
4012 break;
4013
4014 case R_PPC_GOT_TLSGD16:
4015 case R_PPC_GOT_TLSGD16_LO:
4016 case R_PPC_GOT_TLSGD16_HI:
4017 case R_PPC_GOT_TLSGD16_HA:
4018 if (is_local)
4019 /* GD -> LE */
4020 tls_set = 0;
4021 else
4022 /* GD -> IE */
4023 tls_set = TLS_TLS | TLS_TPRELGD;
4024 tls_clear = TLS_GD;
4025 expecting_tls_get_addr = 1;
4026 break;
4027
4028 case R_PPC_GOT_TPREL16:
4029 case R_PPC_GOT_TPREL16_LO:
4030 case R_PPC_GOT_TPREL16_HI:
4031 case R_PPC_GOT_TPREL16_HA:
4032 expecting_tls_get_addr = 0;
4033 if (is_local)
4034 {
4035 /* IE -> LE */
4036 tls_set = 0;
4037 tls_clear = TLS_TPREL;
4038 break;
4039 }
4040 else
4041 continue;
4042
4043 case R_PPC_REL14:
4044 case R_PPC_REL14_BRTAKEN:
4045 case R_PPC_REL14_BRNTAKEN:
4046 case R_PPC_REL24:
4047 if (expecting_tls_get_addr
4048 && h != NULL
4049 && h == htab->tls_get_addr)
4050 {
a6aa5195
AM		 4051 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
4052 if (ent != NULL && ent->plt.refcount > 0)
4053 ent->plt.refcount -= 1;
25dbc73a
AM		 4054 }
4055 expecting_tls_get_addr = 0;
4056 continue;
4057
4058 default:
4059 expecting_tls_get_addr = 0;
4060 continue;
7619e7c7 4061 }
25dbc73a
AM		 4062
4063 if (h != NULL)
7619e7c7 4064 {
25dbc73a
AM		 4065 if (tls_set == 0)
4066 {
4067 /* We managed to get rid of a got entry. */
4068 if (h->got.refcount > 0)
4069 h->got.refcount -= 1;
4070 }
4071 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4072 }
4073 else
4074 {
4075 Elf_Internal_Sym *sym;
4076 bfd_signed_vma *lgot_refs;
4077 char *lgot_masks;
4078
4079 if (locsyms == NULL)
4080 {
4081 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4082 if (locsyms == NULL)
4083 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4084 symtab_hdr->sh_info,
4085 0, NULL, NULL, NULL);
4086 if (locsyms == NULL)
4087 {
4088 if (elf_section_data (sec)->relocs != relstart)
4089 free (relstart);
4090 return FALSE;
4091 }
4092 }
4093 sym = locsyms + r_symndx;
4094 lgot_refs = elf_local_got_refcounts (ibfd);
4095 if (lgot_refs == NULL)
4096 abort ();
4097 if (tls_set == 0)
4098 {
4099 /* We managed to get rid of a got entry. */
4100 if (lgot_refs[r_symndx] > 0)
4101 lgot_refs[r_symndx] -= 1;
4102 }
4103 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4104 tls_mask = &lgot_masks[r_symndx];
7619e7c7 4105 }
25dbc73a
AM		 4106
4107 *tls_mask |= tls_set;
4108 *tls_mask &= ~tls_clear;
7619e7c7 4109 }
25dbc73a
AM		 4110
4111 if (elf_section_data (sec)->relocs != relstart)
4112 free (relstart);
7619e7c7 4113 }
25dbc73a
AM		 4114
4115 if (locsyms != NULL
4116 && (symtab_hdr->contents != (unsigned char *) locsyms))
4117 {
4118 if (!info->keep_memory)
4119 free (locsyms);
4120 else
4121 symtab_hdr->contents = (unsigned char *) locsyms;
4122 }
7fce784e 4123 }
25dbc73a
AM		 4124 return TRUE;
4125}
4126\f
4127/* Adjust a symbol defined by a dynamic object and referenced by a
4128 regular object. The current definition is in some section of the
4129 dynamic object, but we're not including those sections. We have to
4130 change the definition to something the rest of the link can
4131 understand. */
7fce784e 4132
25dbc73a
AM		 4133static bfd_boolean
4134ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4135 struct elf_link_hash_entry *h)
4136{
4137 struct ppc_elf_link_hash_table *htab;
4138 asection *s;
7fce784e 4139
25dbc73a
AM		 4140#ifdef DEBUG
4141 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4142 h->root.root.string);
4143#endif
252b5132 4144
25dbc73a
AM		 4145 /* Make sure we know what is going on here. */
4146 htab = ppc_elf_hash_table (info);
4147 BFD_ASSERT (htab->elf.dynobj != NULL
4148 && (h->needs_plt
4149 || h->u.weakdef != NULL
4150 || (h->def_dynamic
4151 && h->ref_regular
4152 && !h->def_regular)));
252b5132 4153
25dbc73a
AM		 4154 /* Deal with function syms. */
4155 if (h->type == STT_FUNC
4156 || h->needs_plt)
4157 {
4158 /* Clear procedure linkage table information for any symbol that
4159 won't need a .plt entry. */
a6aa5195
AM		 4160 struct plt_entry *ent;
4161 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4162 if (ent->plt.refcount > 0)
4163 break;
4164 if (ent == NULL
25dbc73a
AM		 4165 || SYMBOL_CALLS_LOCAL (info, h)
4166 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4167 && h->root.type == bfd_link_hash_undefweak))
252b5132 4168 {
25dbc73a 4169 /* A PLT entry is not required/allowed when:
252b5132 4170
25dbc73a
AM		 4171 1. We are not using ld.so; because then the PLT entry
4172 can't be set up, so we can't use one. In this case,
4173 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 4174
25dbc73a
AM		 4175 2. GC has rendered the entry unused.
4176
4177 3. We know for certain that a call to this symbol
4178 will go to this object, or will remain undefined. */
a6aa5195 4179 h->plt.plist = NULL;
25dbc73a
AM		 4180 h->needs_plt = 0;
4181 }
4182 return TRUE;
252b5132 4183 }
25dbc73a 4184 else
a6aa5195 4185 h->plt.plist = NULL;
252b5132 4186
25dbc73a
AM		 4187 /* If this is a weak symbol, and there is a real definition, the
4188 processor independent code will have arranged for us to see the
4189 real definition first, and we can just use the same value. */
4190 if (h->u.weakdef != NULL)
252b5132 4191 {
25dbc73a
AM		 4192 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4193 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4194 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4195 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4196 if (ELIMINATE_COPY_RELOCS)
4197 h->non_got_ref = h->u.weakdef->non_got_ref;
4198 return TRUE;
4199 }
dc810e39 4200
25dbc73a
AM		 4201 /* This is a reference to a symbol defined by a dynamic object which
4202 is not a function. */
252b5132 4203
25dbc73a
AM		 4204 /* If we are creating a shared library, we must presume that the
4205 only references to the symbol are via the global offset table.
4206 For such cases we need not do anything here; the relocations will
4207 be handled correctly by relocate_section. */
4208 if (info->shared)
4209 return TRUE;
252b5132 4210
25dbc73a
AM		 4211 /* If there are no references to this symbol that do not use the
4212 GOT, we don't need to generate a copy reloc. */
4213 if (!h->non_got_ref)
4214 return TRUE;
4215
4dc4a9a5
DJ		 4216 /* If we didn't find any dynamic relocs in read-only sections, then we'll
4217 be keeping the dynamic relocs and avoiding the copy reloc. We can't
4218 do this if there are any small data relocations. */
4219 if (ELIMINATE_COPY_RELOCS
4220 && !ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 4221 {
4222 struct ppc_elf_dyn_relocs *p;
4223 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
252b5132 4224 {
25dbc73a
AM		 4225 s = p->sec->output_section;
4226 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4227 break;
252b5132
RH		 4228 }
4229
25dbc73a 4230 if (p == NULL)
252b5132 4231 {
25dbc73a
AM		 4232 h->non_got_ref = 0;
4233 return TRUE;
252b5132
RH		 4234 }
4235 }
4236
909272ee
AM		 4237 if (h->size == 0)
4238 {
4239 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4240 h->root.root.string);
4241 return TRUE;
4242 }
4243
25dbc73a
AM		 4244 /* We must allocate the symbol in our .dynbss section, which will
4245 become part of the .bss section of the executable. There will be
4246 an entry for this symbol in the .dynsym section. The dynamic
4247 object will contain position independent code, so all references
4248 from the dynamic object to this symbol will go through the global
4249 offset table. The dynamic linker will use the .dynsym entry to
4250 determine the address it must put in the global offset table, so
4251 both the dynamic object and the regular object will refer to the
4252 same memory location for the variable.
4253
4dc4a9a5
DJ		 4254 Of course, if the symbol is referenced using SDAREL relocs, we
4255 must instead allocate it in .sbss. */
25dbc73a 4256
4dc4a9a5 4257 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 4258 s = htab->dynsbss;
4259 else
4260 s = htab->dynbss;
4261 BFD_ASSERT (s != NULL);
4262
4263 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4264 copy the initial value out of the dynamic object and into the
4265 runtime process image. We need to remember the offset into the
4266 .rela.bss section we are going to use. */
4267 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4268 {
4269 asection *srel;
4270
4dc4a9a5 4271 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 4272 srel = htab->relsbss;
4273 else
4274 srel = htab->relbss;
4275 BFD_ASSERT (srel != NULL);
4276 srel->size += sizeof (Elf32_External_Rela);
4277 h->needs_copy = 1;
4278 }
7619e7c7 4279
027297b7 4280 return _bfd_elf_adjust_dynamic_copy (h, s);
25dbc73a
AM		 4281}
4282\f
ac39eb42
AM		 4283/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4284 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4285 specifying the addend on the plt relocation. For -fpic code, the sym
4286 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4287 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM		 4288
4289static bfd_boolean
4290add_stub_sym (struct plt_entry *ent,
4291 struct elf_link_hash_entry *h,
ac39eb42 4292 struct bfd_link_info *info)
0ba07910
AM		 4293{
4294 struct elf_link_hash_entry *sh;
4295 size_t len1, len2, len3;
4296 char *name;
ac39eb42
AM		 4297 const char *stub;
4298 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4299
4300 if (info->shared || info->pie)
4301 stub = ".plt_pic32.";
4302 else
4303 stub = ".plt_call32.";
0ba07910
AM		 4304
4305 len1 = strlen (h->root.root.string);
ac39eb42 4306 len2 = strlen (stub);
0ba07910
AM		 4307 len3 = 0;
4308 if (ent->sec)
4309 len3 = strlen (ent->sec->name);
ac39eb42 4310 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM		 4311 if (name == NULL)
4312 return FALSE;
4313 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4314 if (ent->sec)
4315 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM		 4316 memcpy (name + 8 + len3, stub, len2);
4317 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM		 4318 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4319 if (sh == NULL)
4320 return FALSE;
4321 if (sh->root.type == bfd_link_hash_new)
4322 {
4323 sh->root.type = bfd_link_hash_defined;
4324 sh->root.u.def.section = htab->glink;
4325 sh->root.u.def.value = ent->glink_offset;
4326 sh->ref_regular = 1;
4327 sh->def_regular = 1;
4328 sh->ref_regular_nonweak = 1;
4329 sh->forced_local = 1;
4330 sh->non_elf = 0;
4331 }
4332 return TRUE;
4333}
4334
3b36f7e6
AM		 4335/* Allocate NEED contiguous space in .got, and return the offset.
4336 Handles allocation of the got header when crossing 32k. */
4337
4338static bfd_vma
4339allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4340{
4341 bfd_vma where;
4a3dc543 4342 unsigned int max_before_header;
3b36f7e6 4343
4a3dc543 4344 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB		 4345 {
4346 where = htab->got->size;
4347 htab->got->size += need;
4348 }
3b36f7e6
AM		 4349 else
4350 {
4a3dc543
RS		 4351 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4352 if (need <= htab->got_gap)
3b36f7e6 4353 {
4a3dc543
RS		 4354 where = max_before_header - htab->got_gap;
4355 htab->got_gap -= need;
4356 }
4357 else
4358 {
4359 if (htab->got->size + need > max_before_header
4360 && htab->got->size <= max_before_header)
4361 {
4362 htab->got_gap = max_before_header - htab->got->size;
4363 htab->got->size = max_before_header + htab->got_header_size;
4364 }
4365 where = htab->got->size;
4366 htab->got->size += need;
3b36f7e6 4367 }
3b36f7e6
AM		 4368 }
4369 return where;
4370}
4371
25dbc73a 4372/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 4373
b34976b6 4374static bfd_boolean
25dbc73a 4375allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 4376{
25dbc73a
AM		 4377 struct bfd_link_info *info = inf;
4378 struct ppc_elf_link_hash_entry *eh;
7619e7c7 4379 struct ppc_elf_link_hash_table *htab;
25dbc73a 4380 struct ppc_elf_dyn_relocs *p;
252b5132 4381
25dbc73a 4382 if (h->root.type == bfd_link_hash_indirect)
b34976b6 4383 return TRUE;
252b5132 4384
25dbc73a
AM		 4385 if (h->root.type == bfd_link_hash_warning)
4386 /* When warning symbols are created, they **replace** the "real"
4387 entry in the hash table, thus we never get to see the real
4388 symbol in a hash traversal. So look at it now. */
4389 h = (struct elf_link_hash_entry *) h->root.u.i.link;
e47cd125 4390
7619e7c7 4391 htab = ppc_elf_hash_table (info);
a6aa5195 4392 if (htab->elf.dynamic_sections_created)
252b5132 4393 {
a6aa5195
AM		 4394 struct plt_entry *ent;
4395 bfd_boolean doneone = FALSE;
28e99bb6
AM		 4396 bfd_vma plt_offset = 0, glink_offset = 0;
4397
a6aa5195
AM		 4398 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4399 if (ent->plt.refcount > 0)
4400 {
4401 /* Make sure this symbol is output as a dynamic symbol. */
4402 if (h->dynindx == -1
4403 && !h->forced_local)
4404 {
4405 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4406 return FALSE;
4407 }
252b5132 4408
a6aa5195
AM		 4409 if (info->shared
4410 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4411 {
4412 asection *s = htab->plt;
7619e7c7 4413
4a3dc543 4414 if (htab->plt_type == PLT_NEW)
a6aa5195 4415 {
a6aa5195 4416 if (!doneone)
28e99bb6
AM		 4417 {
4418 plt_offset = s->size;
4419 s->size += 4;
4420 }
4421 ent->plt.offset = plt_offset;
d7128ce4 4422
a6aa5195 4423 s = htab->glink;
28e99bb6
AM		 4424 if (!doneone || info->shared || info->pie)
4425 {
4426 glink_offset = s->size;
4427 s->size += GLINK_ENTRY_SIZE;
4428 }
4429 if (!doneone
4430 && !info->shared
a6aa5195
AM		 4431 && !h->def_regular)
4432 {
4433 h->root.u.def.section = s;
28e99bb6 4434 h->root.u.def.value = glink_offset;
a6aa5195 4435 }
28e99bb6 4436 ent->glink_offset = glink_offset;
0ba07910
AM		 4437
4438 if (htab->emit_stub_syms
ac39eb42 4439 && !add_stub_sym (ent, h, info))
0ba07910 4440 return FALSE;
a6aa5195
AM		 4441 }
4442 else
4443 {
a6aa5195
AM		 4444 if (!doneone)
4445 {
28e99bb6
AM		 4446 /* If this is the first .plt entry, make room
4447 for the special first entry. */
4448 if (s->size == 0)
9d8504b1 4449 s->size += htab->plt_initial_entry_size;
28e99bb6
AM		 4450
4451 /* The PowerPC PLT is actually composed of two
4452 parts, the first part is 2 words (for a load
4453 and a jump), and then there is a remaining
4454 word available at the end. */
9d8504b1
PB		 4455 plt_offset = (htab->plt_initial_entry_size
4456 + (htab->plt_slot_size
4457 * ((s->size
4458 - htab->plt_initial_entry_size)
4459 / htab->plt_entry_size)));
28e99bb6
AM		 4460
4461 /* If this symbol is not defined in a regular
4462 file, and we are not generating a shared
4463 library, then set the symbol to this location
4464 in the .plt. This is required to make
4465 function pointers compare as equal between
4466 the normal executable and the shared library. */
4467 if (! info->shared
4468 && !h->def_regular)
4469 {
4470 h->root.u.def.section = s;
4471 h->root.u.def.value = plt_offset;
4472 }
4473
9d8504b1
PB		 4474 /* Make room for this entry. */
4475 s->size += htab->plt_entry_size;
4476 /* After the 8192nd entry, room for two entries
4477 is allocated. */
4a3dc543 4478 if (htab->plt_type == PLT_OLD
9d8504b1
PB		 4479 && (s->size - htab->plt_initial_entry_size)
4480 / htab->plt_entry_size
4481 > PLT_NUM_SINGLE_ENTRIES)
4482 s->size += htab->plt_entry_size;
a6aa5195 4483 }
28e99bb6 4484 ent->plt.offset = plt_offset;
a6aa5195 4485 }
25dbc73a 4486
a6aa5195
AM		 4487 /* We also need to make an entry in the .rela.plt section. */
4488 if (!doneone)
4489 {
4490 htab->relplt->size += sizeof (Elf32_External_Rela);
9d8504b1 4491
4a3dc543 4492 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB		 4493 {
4494 /* Allocate space for the unloaded relocations. */
4495 if (!info->shared)
4496 {
4497 if (ent->plt.offset
4498 == (bfd_vma) htab->plt_initial_entry_size)
4499 {
4500 htab->srelplt2->size
4501 += sizeof (Elf32_External_Rela)
4502 * VXWORKS_PLTRESOLVE_RELOCS;
4503 }
4504
4505 htab->srelplt2->size
4506 += sizeof (Elf32_External_Rela)
4507 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4508 }
4509
4510 /* Every PLT entry has an associated GOT entry in
4511 .got.plt. */
4512 htab->sgotplt->size += 4;
4513 }
a6aa5195
AM		 4514 doneone = TRUE;
4515 }
4516 }
4517 else
4518 ent->plt.offset = (bfd_vma) -1;
a6aa5195 4519 }
2ce859a1
AM		 4520 else
4521 ent->plt.offset = (bfd_vma) -1;
4522
4523 if (!doneone)
4524 {
4525 h->plt.plist = NULL;
4526 h->needs_plt = 0;
4527 }
25dbc73a
AM		 4528 }
4529 else
4530 {
a6aa5195 4531 h->plt.plist = NULL;
25dbc73a
AM		 4532 h->needs_plt = 0;
4533 }
4534
4535 eh = (struct ppc_elf_link_hash_entry *) h;
4536 if (eh->elf.got.refcount > 0)
4537 {
4538 /* Make sure this symbol is output as a dynamic symbol. */
4539 if (eh->elf.dynindx == -1
4540 && !eh->elf.forced_local)
4541 {
4542 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 4543 return FALSE;
25dbc73a 4544 }
252b5132 4545
25dbc73a
AM		 4546 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4547 && !eh->elf.def_dynamic)
4548 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4549 eh->elf.got.offset = (bfd_vma) -1;
4550 else
4551 {
4552 bfd_boolean dyn;
3b36f7e6 4553 unsigned int need = 0;
25dbc73a 4554 if ((eh->tls_mask & TLS_TLS) != 0)
252b5132 4555 {
25dbc73a 4556 if ((eh->tls_mask & TLS_LD) != 0)
3b36f7e6 4557 need += 8;
25dbc73a 4558 if ((eh->tls_mask & TLS_GD) != 0)
3b36f7e6 4559 need += 8;
25dbc73a 4560 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
3b36f7e6 4561 need += 4;
25dbc73a 4562 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 4563 need += 4;
252b5132 4564 }
25dbc73a 4565 else
3b36f7e6
AM		 4566 need += 4;
4567 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM		 4568 dyn = htab->elf.dynamic_sections_created;
4569 if ((info->shared
4570 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4571 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4572 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 4573 {
3b36f7e6
AM		 4574 /* All the entries we allocated need relocs.
4575 Except LD only needs one. */
25dbc73a 4576 if ((eh->tls_mask & TLS_LD) != 0)
3b36f7e6
AM		 4577 need -= 4;
4578 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 4579 }
25dbc73a
AM		 4580 }
4581 }
4582 else
4583 eh->elf.got.offset = (bfd_vma) -1;
252b5132 4584
25dbc73a
AM		 4585 if (eh->dyn_relocs == NULL)
4586 return TRUE;
252b5132 4587
25dbc73a
AM		 4588 /* In the shared -Bsymbolic case, discard space allocated for
4589 dynamic pc-relative relocs against symbols which turn out to be
4590 defined in regular objects. For the normal shared case, discard
4591 space for relocs that have become local due to symbol visibility
4592 changes. */
4593
4594 if (info->shared)
4595 {
4596 /* Relocs that use pc_count are those that appear on a call insn,
4597 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4598 generated via assembly. We want calls to protected symbols to
4599 resolve directly to the function rather than going via the plt.
4600 If people want function pointer comparisons to work as expected
4601 then they should avoid writing weird assembly. */
4602 if (SYMBOL_CALLS_LOCAL (info, h))
4603 {
4604 struct ppc_elf_dyn_relocs **pp;
4605
4606 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 4607 {
25dbc73a
AM		 4608 p->count -= p->pc_count;
4609 p->pc_count = 0;
4610 if (p->count == 0)
4611 *pp = p->next;
4612 else
4613 pp = &p->next;
252b5132 4614 }
25dbc73a 4615 }
252b5132 4616
25dbc73a
AM		 4617 /* Also discard relocs on undefined weak syms with non-default
4618 visibility. */
cab87ef9
AM		 4619 if (eh->dyn_relocs != NULL
4620 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 4621 {
dfbb6ac9
AM		 4622 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4623 eh->dyn_relocs = NULL;
4624
4625 /* Make sure undefined weak symbols are output as a dynamic
4626 symbol in PIEs. */
4627 else if (h->dynindx == -1
4628 && !h->forced_local)
4629 {
4630 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4631 return FALSE;
4632 }
25dbc73a
AM		 4633 }
4634 }
4635 else if (ELIMINATE_COPY_RELOCS)
4636 {
4637 /* For the non-shared case, discard space for relocs against
4638 symbols which turn out to need copy relocs or are not
4639 dynamic. */
7619e7c7 4640
25dbc73a
AM		 4641 if (!h->non_got_ref
4642 && h->def_dynamic
4643 && !h->def_regular)
4644 {
4645 /* Make sure this symbol is output as a dynamic symbol.
4646 Undefined weak syms won't yet be marked as dynamic. */
4647 if (h->dynindx == -1
4648 && !h->forced_local)
4649 {
4650 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4651 return FALSE;
4652 }
7619e7c7 4653
25dbc73a
AM		 4654 /* If that succeeded, we know we'll be keeping all the
4655 relocs. */
4656 if (h->dynindx != -1)
4657 goto keep;
4658 }
252b5132 4659
25dbc73a 4660 eh->dyn_relocs = NULL;
252b5132 4661
25dbc73a
AM		 4662 keep: ;
4663 }
252b5132 4664
25dbc73a
AM		 4665 /* Finally, allocate space. */
4666 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4667 {
4668 asection *sreloc = elf_section_data (p->sec)->sreloc;
4669 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4670 }
252b5132 4671
25dbc73a
AM		 4672 return TRUE;
4673}
7619e7c7 4674
25dbc73a 4675/* Find any dynamic relocs that apply to read-only sections. */
7619e7c7 4676
25dbc73a
AM		 4677static bfd_boolean
4678readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4679{
4680 struct ppc_elf_dyn_relocs *p;
7619e7c7 4681
25dbc73a
AM		 4682 if (h->root.type == bfd_link_hash_indirect)
4683 return TRUE;
252b5132 4684
25dbc73a
AM		 4685 if (h->root.type == bfd_link_hash_warning)
4686 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 4687
25dbc73a
AM		 4688 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4689 {
4690 asection *s = p->sec->output_section;
ee05f2fe 4691
25dbc73a
AM		 4692 if (s != NULL
4693 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4694 == (SEC_READONLY | SEC_ALLOC)))
4695 {
4696 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 4697
25dbc73a
AM		 4698 /* Not an error, just cut short the traversal. */
4699 return FALSE;
4700 }
4701 }
4702 return TRUE;
4703}
4704
4705/* Set the sizes of the dynamic sections. */
4706
4707static bfd_boolean
4708ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4709 struct bfd_link_info *info)
4710{
4711 struct ppc_elf_link_hash_table *htab;
4712 asection *s;
4713 bfd_boolean relocs;
4714 bfd *ibfd;
7fce784e 4715
252b5132 4716#ifdef DEBUG
25dbc73a 4717 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 4718#endif
252b5132 4719
25dbc73a
AM		 4720 htab = ppc_elf_hash_table (info);
4721 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 4722
25dbc73a
AM		 4723 if (elf_hash_table (info)->dynamic_sections_created)
4724 {
4725 /* Set the contents of the .interp section to the interpreter. */
4726 if (info->executable)
4727 {
4728 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4729 BFD_ASSERT (s != NULL);
4730 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4731 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4732 }
4733 }
252b5132 4734
4a3dc543 4735 if (htab->plt_type == PLT_OLD)
d7128ce4 4736 htab->got_header_size = 16;
4a3dc543 4737 else if (htab->plt_type == PLT_NEW)
d7128ce4 4738 htab->got_header_size = 12;
252b5132 4739
25dbc73a
AM		 4740 /* Set up .got offsets for local syms, and space for local dynamic
4741 relocs. */
4742 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4743 {
4744 bfd_signed_vma *local_got;
4745 bfd_signed_vma *end_local_got;
4746 char *lgot_masks;
4747 bfd_size_type locsymcount;
4748 Elf_Internal_Shdr *symtab_hdr;
7fce784e 4749
d2663f46 4750 if (!is_ppc_elf_target (ibfd->xvec))
25dbc73a 4751 continue;
7fce784e 4752
25dbc73a
AM		 4753 for (s = ibfd->sections; s != NULL; s = s->next)
4754 {
4755 struct ppc_elf_dyn_relocs *p;
252b5132 4756
25dbc73a
AM		 4757 for (p = ((struct ppc_elf_dyn_relocs *)
4758 elf_section_data (s)->local_dynrel);
4759 p != NULL;
4760 p = p->next)
4761 {
4762 if (!bfd_is_abs_section (p->sec)
4763 && bfd_is_abs_section (p->sec->output_section))
4764 {
4765 /* Input section has been discarded, either because
4766 it is a copy of a linkonce section or due to
4767 linker script /DISCARD/, so we'll be discarding
4768 the relocs too. */
7fce784e 4769 }
25dbc73a 4770 else if (p->count != 0)
7fce784e 4771 {
25dbc73a
AM		 4772 elf_section_data (p->sec)->sreloc->size
4773 += p->count * sizeof (Elf32_External_Rela);
4774 if ((p->sec->output_section->flags
4775 & (SEC_READONLY | SEC_ALLOC))
4776 == (SEC_READONLY | SEC_ALLOC))
4777 info->flags |= DF_TEXTREL;
7fce784e 4778 }
252b5132 4779 }
252b5132 4780 }
252b5132 4781
25dbc73a
AM		 4782 local_got = elf_local_got_refcounts (ibfd);
4783 if (!local_got)
4784 continue;
252b5132 4785
25dbc73a
AM		 4786 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4787 locsymcount = symtab_hdr->sh_info;
4788 end_local_got = local_got + locsymcount;
4789 lgot_masks = (char *) end_local_got;
25dbc73a
AM		 4790 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4791 if (*local_got > 0)
4792 {
4793 if (*lgot_masks == (TLS_TLS | TLS_LD))
4794 {
4795 /* If just an LD reloc, we'll just use
4796 htab->tlsld_got.offset. */
3b36f7e6 4797 htab->tlsld_got.refcount += 1;
25dbc73a
AM		 4798 *local_got = (bfd_vma) -1;
4799 }
4800 else
4801 {
3b36f7e6 4802 unsigned int need = 0;
25dbc73a
AM		 4803 if ((*lgot_masks & TLS_TLS) != 0)
4804 {
4805 if ((*lgot_masks & TLS_GD) != 0)
3b36f7e6 4806 need += 8;
25dbc73a 4807 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
3b36f7e6 4808 need += 4;
25dbc73a 4809 if ((*lgot_masks & TLS_DTPREL) != 0)
3b36f7e6 4810 need += 4;
25dbc73a
AM		 4811 }
4812 else
3b36f7e6
AM		 4813 need += 4;
4814 *local_got = allocate_got (htab, need);
25dbc73a 4815 if (info->shared)
3b36f7e6
AM		 4816 htab->relgot->size += (need
4817 * (sizeof (Elf32_External_Rela) / 4));
25dbc73a
AM		 4818 }
4819 }
4820 else
4821 *local_got = (bfd_vma) -1;
4822 }
252b5132 4823
3b36f7e6
AM		 4824 if (htab->tlsld_got.refcount > 0)
4825 {
4826 htab->tlsld_got.offset = allocate_got (htab, 8);
4827 if (info->shared)
4828 htab->relgot->size += sizeof (Elf32_External_Rela);
4829 }
4830 else
4831 htab->tlsld_got.offset = (bfd_vma) -1;
4832
25dbc73a
AM		 4833 /* Allocate space for global sym dynamic relocs. */
4834 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4835
4a3dc543 4836 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM		 4837 {
4838 unsigned int g_o_t = 32768;
4839
4d962050
AM		 4840 /* If we haven't allocated the header, do so now. When we get here,
4841 for old plt/got the got size will be 0 to 32764 (not allocated),
4842 or 32780 to 65536 (header allocated). For new plt/got, the
4843 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM		 4844 if (htab->got->size <= 32768)
4845 {
4846 g_o_t = htab->got->size;
4a3dc543 4847 if (htab->plt_type == PLT_OLD)
4d962050 4848 g_o_t += 4;
3b36f7e6
AM		 4849 htab->got->size += htab->got_header_size;
4850 }
3b36f7e6
AM		 4851
4852 htab->elf.hgot->root.u.def.value = g_o_t;
4853 }
4854
d7128ce4
AM		 4855 if (htab->glink != NULL && htab->glink->size != 0)
4856 {
4857 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM		 4858 /* Space for the branch table. */
4859 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4860 /* Pad out to align the start of PLTresolve. */
4861 htab->glink->size += -htab->glink->size & 15;
d7128ce4 4862 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910
AM		 4863
4864 if (htab->emit_stub_syms)
4865 {
4866 struct elf_link_hash_entry *sh;
4867 sh = elf_link_hash_lookup (&htab->elf, "__glink",
4868 TRUE, FALSE, FALSE);
4869 if (sh == NULL)
4870 return FALSE;
4871 if (sh->root.type == bfd_link_hash_new)
4872 {
4873 sh->root.type = bfd_link_hash_defined;
4874 sh->root.u.def.section = htab->glink;
4875 sh->root.u.def.value = htab->glink_pltresolve;
4876 sh->ref_regular = 1;
4877 sh->def_regular = 1;
4878 sh->ref_regular_nonweak = 1;
4879 sh->forced_local = 1;
4880 sh->non_elf = 0;
4881 }
4882 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
4883 TRUE, FALSE, FALSE);
4884 if (sh == NULL)
4885 return FALSE;
4886 if (sh->root.type == bfd_link_hash_new)
4887 {
4888 sh->root.type = bfd_link_hash_defined;
4889 sh->root.u.def.section = htab->glink;
4890 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
4891 sh->ref_regular = 1;
4892 sh->def_regular = 1;
4893 sh->ref_regular_nonweak = 1;
4894 sh->forced_local = 1;
4895 sh->non_elf = 0;
4896 }
4897 }
d7128ce4
AM		 4898 }
4899
25dbc73a
AM		 4900 /* We've now determined the sizes of the various dynamic sections.
4901 Allocate memory for them. */
4902 relocs = FALSE;
4903 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 4904 {
9d8504b1
PB		 4905 bfd_boolean strip_section = TRUE;
4906
25dbc73a
AM		 4907 if ((s->flags & SEC_LINKER_CREATED) == 0)
4908 continue;
252b5132 4909
25dbc73a 4910 if (s == htab->plt
d7128ce4 4911 || s == htab->glink
644285ef 4912 || s == htab->got
9d8504b1 4913 || s == htab->sgotplt
c456f082
AM		 4914 || s == htab->sbss
4915 || s == htab->dynbss
4916 || s == htab->dynsbss)
25dbc73a 4917 {
9d8504b1
PB		 4918 /* We'd like to strip these sections if they aren't needed, but if
4919 we've exported dynamic symbols from them we must leave them.
4920 It's too late to tell BFD to get rid of the symbols. */
7325306f 4921 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
9d8504b1 4922 strip_section = FALSE;
25dbc73a
AM		 4923 /* Strip this section if we don't need it; see the
4924 comment below. */
4925 }
c9a2f333
AM		 4926 else if (s == htab->sdata[0].section
4927 || s == htab->sdata[1].section)
25dbc73a 4928 {
c9a2f333 4929 /* Strip these too. */
25dbc73a 4930 }
0112cd26 4931 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
25dbc73a 4932 {
c456f082 4933 if (s->size != 0)
25dbc73a
AM		 4934 {
4935 /* Remember whether there are any relocation sections. */
4936 relocs = TRUE;
252b5132 4937
25dbc73a
AM		 4938 /* We use the reloc_count field as a counter if we need
4939 to copy relocs into the output file. */
4940 s->reloc_count = 0;
252b5132
RH		 4941 }
4942 }
25dbc73a
AM		 4943 else
4944 {
4945 /* It's not one of our sections, so don't allocate space. */
4946 continue;
4947 }
252b5132 4948
9d8504b1 4949 if (s->size == 0 && strip_section)
25dbc73a 4950 {
c456f082
AM		 4951 /* If we don't need this section, strip it from the
4952 output file. This is mostly to handle .rela.bss and
4953 .rela.plt. We must create both sections in
4954 create_dynamic_sections, because they must be created
4955 before the linker maps input sections to output
4956 sections. The linker does that before
4957 adjust_dynamic_symbol is called, and it is that
4958 function which decides whether anything needs to go
4959 into these sections. */
8423293d 4960 s->flags |= SEC_EXCLUDE;
25dbc73a
AM		 4961 continue;
4962 }
7fce784e 4963
d7128ce4 4964 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM		 4965 continue;
4966
25dbc73a
AM		 4967 /* Allocate memory for the section contents. */
4968 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4969 if (s->contents == NULL)
4970 return FALSE;
4971 }
252b5132 4972
25dbc73a 4973 if (htab->elf.dynamic_sections_created)
7619e7c7 4974 {
25dbc73a
AM		 4975 /* Add some entries to the .dynamic section. We fill in the
4976 values later, in ppc_elf_finish_dynamic_sections, but we
4977 must add the entries now so that we get the correct size for
4978 the .dynamic section. The DT_DEBUG entry is filled in by the
4979 dynamic linker and used by the debugger. */
4980#define add_dynamic_entry(TAG, VAL) \
4981 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 4982
25dbc73a 4983 if (info->executable)
7619e7c7 4984 {
25dbc73a
AM		 4985 if (!add_dynamic_entry (DT_DEBUG, 0))
4986 return FALSE;
7619e7c7
AM		 4987 }
4988
25dbc73a 4989 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 4990 {
25dbc73a
AM		 4991 if (!add_dynamic_entry (DT_PLTGOT, 0)
4992 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4993 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4994 || !add_dynamic_entry (DT_JMPREL, 0))
4995 return FALSE;
4996 }
7619e7c7 4997
d7128ce4
AM		 4998 if (htab->glink != NULL && htab->glink->size != 0)
4999 {
1fe44d79 5000 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4
AM		 5001 return FALSE;
5002 }
5003
25dbc73a
AM		 5004 if (relocs)
5005 {
5006 if (!add_dynamic_entry (DT_RELA, 0)
5007 || !add_dynamic_entry (DT_RELASZ, 0)
5008 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5009 return FALSE;
5010 }
7619e7c7 5011
25dbc73a
AM		 5012 /* If any dynamic relocs apply to a read-only section, then we
5013 need a DT_TEXTREL entry. */
5014 if ((info->flags & DF_TEXTREL) == 0)
5015 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
5016 info);
7619e7c7 5017
25dbc73a
AM		 5018 if ((info->flags & DF_TEXTREL) != 0)
5019 {
5020 if (!add_dynamic_entry (DT_TEXTREL, 0))
5021 return FALSE;
7619e7c7
AM		 5022 }
5023 }
25dbc73a
AM		 5024#undef add_dynamic_entry
5025
7619e7c7
AM		 5026 return TRUE;
5027}
25dbc73a
AM		 5028\f
5029#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5030
5031static const int shared_stub_entry[] =
5032 {
5033 0x7c0802a6, /* mflr 0 */
5034 0x429f0005, /* bcl 20, 31, .Lxxx */
5035 0x7d6802a6, /* mflr 11 */
5036 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5037 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5038 0x7c0803a6, /* mtlr 0 */
5039 0x7d6903a6, /* mtctr 11 */
5040 0x4e800420, /* bctr */
5041 };
5042
5043static const int stub_entry[] =
5044 {
5045 0x3d600000, /* lis 11,xxx@ha */
5046 0x396b0000, /* addi 11,11,xxx@l */
5047 0x7d6903a6, /* mtctr 11 */
5048 0x4e800420, /* bctr */
5049 };
5050
5051static bfd_boolean
5052ppc_elf_relax_section (bfd *abfd,
5053 asection *isec,
5054 struct bfd_link_info *link_info,
5055 bfd_boolean *again)
5056{
5057 struct one_fixup
5058 {
5059 struct one_fixup *next;
5060 asection *tsec;
5061 bfd_vma toff;
5062 bfd_vma trampoff;
5063 };
7619e7c7 5064
25dbc73a
AM		 5065 Elf_Internal_Shdr *symtab_hdr;
5066 bfd_byte *contents = NULL;
5067 Elf_Internal_Sym *isymbuf = NULL;
5068 Elf_Internal_Rela *internal_relocs = NULL;
5069 Elf_Internal_Rela *irel, *irelend;
5070 struct one_fixup *fixups = NULL;
5071 bfd_boolean changed;
d7128ce4 5072 struct ppc_elf_link_hash_table *htab;
25dbc73a 5073 bfd_size_type trampoff;
a6aa5195 5074 asection *got2;
7619e7c7 5075
25dbc73a 5076 *again = FALSE;
7619e7c7 5077
c87b5a93
AM		 5078 /* Nothing to do if there are no relocations, and no need to do
5079 anything with non-alloc sections. */
5080 if ((isec->flags & SEC_ALLOC) == 0
5081 || (isec->flags & SEC_RELOC) == 0
5082 || isec->reloc_count == 0)
25dbc73a 5083 return TRUE;
7619e7c7 5084
25dbc73a
AM		 5085 trampoff = (isec->size + 3) & (bfd_vma) -4;
5086 /* Space for a branch around any trampolines. */
5087 trampoff += 4;
7619e7c7 5088
25dbc73a 5089 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7619e7c7 5090
25dbc73a
AM		 5091 /* Get a copy of the native relocations. */
5092 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5093 link_info->keep_memory);
5094 if (internal_relocs == NULL)
5095 goto error_return;
7619e7c7 5096
d7128ce4 5097 htab = ppc_elf_hash_table (link_info);
a6aa5195 5098 got2 = bfd_get_section_by_name (abfd, ".got2");
7619e7c7 5099
a6aa5195 5100 irelend = internal_relocs + isec->reloc_count;
25dbc73a 5101 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 5102 {
25dbc73a
AM		 5103 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5104 bfd_vma symaddr, reladdr, toff, roff;
5105 asection *tsec;
5106 struct one_fixup *f;
5107 size_t insn_offset = 0;
5108 bfd_vma max_branch_offset, val;
5109 bfd_byte *hit_addr;
5110 unsigned long t0;
5111 unsigned char sym_type;
7619e7c7 5112
25dbc73a
AM		 5113 switch (r_type)
5114 {
5115 case R_PPC_REL24:
5116 case R_PPC_LOCAL24PC:
5117 case R_PPC_PLTREL24:
5118 max_branch_offset = 1 << 25;
5119 break;
7619e7c7 5120
25dbc73a
AM		 5121 case R_PPC_REL14:
5122 case R_PPC_REL14_BRTAKEN:
5123 case R_PPC_REL14_BRNTAKEN:
5124 max_branch_offset = 1 << 15;
5125 break;
7619e7c7 5126
25dbc73a
AM		 5127 default:
5128 continue;
5129 }
7619e7c7 5130
25dbc73a
AM		 5131 /* Get the value of the symbol referred to by the reloc. */
5132 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5133 {
5134 /* A local symbol. */
5135 Elf_Internal_Sym *isym;
7fce784e 5136
25dbc73a
AM		 5137 /* Read this BFD's local symbols. */
5138 if (isymbuf == NULL)
5139 {
5140 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5141 if (isymbuf == NULL)
5142 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5143 symtab_hdr->sh_info, 0,
5144 NULL, NULL, NULL);
5145 if (isymbuf == 0)
5146 goto error_return;
5147 }
5148 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5149 if (isym->st_shndx == SHN_UNDEF)
5150 continue; /* We can't do anything with undefined symbols. */
5151 else if (isym->st_shndx == SHN_ABS)
5152 tsec = bfd_abs_section_ptr;
5153 else if (isym->st_shndx == SHN_COMMON)
5154 tsec = bfd_com_section_ptr;
5155 else
5156 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 5157
25dbc73a
AM		 5158 toff = isym->st_value;
5159 sym_type = ELF_ST_TYPE (isym->st_info);
5160 }
5161 else
5162 {
5163 /* Global symbol handling. */
5164 unsigned long indx;
5165 struct elf_link_hash_entry *h;
7619e7c7 5166
25dbc73a
AM		 5167 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5168 h = elf_sym_hashes (abfd)[indx];
7619e7c7 5169
25dbc73a
AM		 5170 while (h->root.type == bfd_link_hash_indirect
5171 || h->root.type == bfd_link_hash_warning)
5172 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5173
a6aa5195
AM		 5174 tsec = NULL;
5175 toff = 0;
25dbc73a 5176 if (r_type == R_PPC_PLTREL24
a6aa5195 5177 && htab->plt != NULL)
25dbc73a 5178 {
a6aa5195
AM		 5179 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5180
5181 if (ent != NULL)
d7128ce4 5182 {
4a3dc543 5183 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 5184 {
5185 tsec = htab->glink;
5186 toff = ent->glink_offset;
5187 }
5188 else
5189 {
5190 tsec = htab->plt;
5191 toff = ent->plt.offset;
5192 }
d7128ce4 5193 }
25dbc73a 5194 }
a6aa5195
AM		 5195 if (tsec != NULL)
5196 ;
25dbc73a
AM		 5197 else if (h->root.type == bfd_link_hash_defined
5198 || h->root.type == bfd_link_hash_defweak)
5199 {
5200 tsec = h->root.u.def.section;
5201 toff = h->root.u.def.value;
5202 }
5203 else
5204 continue;
7619e7c7 5205
25dbc73a
AM		 5206 sym_type = h->type;
5207 }
7619e7c7 5208
25dbc73a
AM		 5209 /* If the branch and target are in the same section, you have
5210 no hope of adding stubs. We'll error out later should the
5211 branch overflow. */
5212 if (tsec == isec)
5213 continue;
5214
5215 /* There probably isn't any reason to handle symbols in
5216 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5217 attribute for a code section, and we are only looking at
5218 branches. However, implement it correctly here as a
5219 reference for other target relax_section functions. */
5220 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5221 {
5222 /* At this stage in linking, no SEC_MERGE symbol has been
5223 adjusted, so all references to such symbols need to be
5224 passed through _bfd_merged_section_offset. (Later, in
5225 relocate_section, all SEC_MERGE symbols *except* for
5226 section symbols have been adjusted.)
5227
5228 gas may reduce relocations against symbols in SEC_MERGE
5229 sections to a relocation against the section symbol when
5230 the original addend was zero. When the reloc is against
5231 a section symbol we should include the addend in the
5232 offset passed to _bfd_merged_section_offset, since the
5233 location of interest is the original symbol. On the
5234 other hand, an access to "sym+addend" where "sym" is not
5235 a section symbol should not include the addend; Such an
5236 access is presumed to be an offset from "sym"; The
5237 location of interest is just "sym". */
5238 if (sym_type == STT_SECTION)
5239 toff += irel->r_addend;
7619e7c7 5240
25dbc73a
AM		 5241 toff = _bfd_merged_section_offset (abfd, &tsec,
5242 elf_section_data (tsec)->sec_info,
5243 toff);
7619e7c7 5244
25dbc73a
AM		 5245 if (sym_type != STT_SECTION)
5246 toff += irel->r_addend;
5247 }
a6aa5195
AM		 5248 /* PLTREL24 addends are special. */
5249 else if (r_type != R_PPC_PLTREL24)
25dbc73a 5250 toff += irel->r_addend;
7619e7c7 5251
7de713b9
AM		 5252 /* Attempted -shared link of non-pic code loses. */
5253 if (tsec->output_section == NULL)
5254 continue;
5255
25dbc73a 5256 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7619e7c7 5257
25dbc73a
AM		 5258 roff = irel->r_offset;
5259 reladdr = isec->output_section->vma + isec->output_offset + roff;
7619e7c7 5260
25dbc73a
AM		 5261 /* If the branch is in range, no need to do anything. */
5262 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5263 continue;
252b5132 5264
25dbc73a
AM		 5265 /* Look for an existing fixup to this address. */
5266 for (f = fixups; f ; f = f->next)
5267 if (f->tsec == tsec && f->toff == toff)
5268 break;
5269
5270 if (f == NULL)
7619e7c7 5271 {
25dbc73a
AM		 5272 size_t size;
5273 unsigned long stub_rtype;
252b5132 5274
25dbc73a
AM		 5275 val = trampoff - roff;
5276 if (val >= max_branch_offset)
5277 /* Oh dear, we can't reach a trampoline. Don't try to add
5278 one. We'll report an error later. */
5279 continue;
252b5132 5280
25dbc73a
AM		 5281 if (link_info->shared)
5282 {
5283 size = 4 * ARRAY_SIZE (shared_stub_entry);
5284 insn_offset = 12;
5285 stub_rtype = R_PPC_RELAX32PC;
5286 }
5287 else
5288 {
5289 size = 4 * ARRAY_SIZE (stub_entry);
5290 insn_offset = 0;
5291 stub_rtype = R_PPC_RELAX32;
5292 }
dc810e39 5293
25dbc73a
AM		 5294 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5295 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5296 abort ();
d7128ce4
AM		 5297 if (tsec == htab->plt
5298 || tsec == htab->glink)
25dbc73a 5299 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
252b5132 5300
25dbc73a
AM		 5301 /* Hijack the old relocation. Since we need two
5302 relocations for this use a "composite" reloc. */
5303 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5304 stub_rtype);
5305 irel->r_offset = trampoff + insn_offset;
252b5132 5306
25dbc73a
AM		 5307 /* Record the fixup so we don't do it again this section. */
5308 f = bfd_malloc (sizeof (*f));
5309 f->next = fixups;
5310 f->tsec = tsec;
5311 f->toff = toff;
5312 f->trampoff = trampoff;
5313 fixups = f;
252b5132 5314
25dbc73a
AM		 5315 trampoff += size;
5316 }
5317 else
5318 {
5319 val = f->trampoff - roff;
5320 if (val >= max_branch_offset)
5321 continue;
252b5132 5322
25dbc73a
AM		 5323 /* Nop out the reloc, since we're finalizing things here. */
5324 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5325 }
252b5132 5326
25dbc73a
AM		 5327 /* Get the section contents. */
5328 if (contents == NULL)
5329 {
5330 /* Get cached copy if it exists. */
5331 if (elf_section_data (isec)->this_hdr.contents != NULL)
5332 contents = elf_section_data (isec)->this_hdr.contents;
5333 else
5334 {
5335 /* Go get them off disk. */
5336 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5337 goto error_return;
5338 }
5339 }
252b5132 5340
25dbc73a
AM		 5341 /* Fix up the existing branch to hit the trampoline. */
5342 hit_addr = contents + roff;
5343 switch (r_type)
5344 {
5345 case R_PPC_REL24:
5346 case R_PPC_LOCAL24PC:
5347 case R_PPC_PLTREL24:
5348 t0 = bfd_get_32 (abfd, hit_addr);
5349 t0 &= ~0x3fffffc;
5350 t0 |= val & 0x3fffffc;
5351 bfd_put_32 (abfd, t0, hit_addr);
5352 break;
252b5132 5353
25dbc73a
AM		 5354 case R_PPC_REL14:
5355 case R_PPC_REL14_BRTAKEN:
5356 case R_PPC_REL14_BRNTAKEN:
5357 t0 = bfd_get_32 (abfd, hit_addr);
5358 t0 &= ~0xfffc;
5359 t0 |= val & 0xfffc;
5360 bfd_put_32 (abfd, t0, hit_addr);
5361 break;
5362 }
5363 }
252b5132 5364
25dbc73a
AM		 5365 /* Write out the trampolines. */
5366 changed = fixups != NULL;
5367 if (fixups != NULL)
5368 {
5369 const int *stub;
5370 bfd_byte *dest;
5371 bfd_vma val;
5372 int i, size;
252b5132 5373
25dbc73a
AM		 5374 do
5375 {
5376 struct one_fixup *f = fixups;
5377 fixups = fixups->next;
5378 free (f);
5379 }
5380 while (fixups);
252b5132 5381
25dbc73a
AM		 5382 contents = bfd_realloc (contents, trampoff);
5383 if (contents == NULL)
5384 goto error_return;
252b5132 5385
25dbc73a
AM		 5386 isec->size = (isec->size + 3) & (bfd_vma) -4;
5387 /* Branch around the trampolines. */
5388 val = trampoff - isec->size + 0x48000000;
5389 dest = contents + isec->size;
5390 isec->size = trampoff;
5391 bfd_put_32 (abfd, val, dest);
5392 dest += 4;
252b5132 5393
25dbc73a
AM		 5394 if (link_info->shared)
5395 {
5396 stub = shared_stub_entry;
5397 size = ARRAY_SIZE (shared_stub_entry);
5398 }
5399 else
5400 {
5401 stub = stub_entry;
5402 size = ARRAY_SIZE (stub_entry);
5403 }
252b5132 5404
25dbc73a
AM		 5405 i = 0;
5406 while (dest < contents + trampoff)
252b5132 5407 {
25dbc73a
AM		 5408 bfd_put_32 (abfd, stub[i], dest);
5409 i++;
5410 if (i == size)
5411 i = 0;
5412 dest += 4;
252b5132 5413 }
25dbc73a 5414 BFD_ASSERT (i == 0);
252b5132
RH		 5415 }
5416
25dbc73a
AM		 5417 if (isymbuf != NULL
5418 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 5419 {
25dbc73a
AM		 5420 if (! link_info->keep_memory)
5421 free (isymbuf);
252b5132 5422 else
25dbc73a
AM		 5423 {
5424 /* Cache the symbols for elf_link_input_bfd. */
5425 symtab_hdr->contents = (unsigned char *) isymbuf;
5426 }
252b5132
RH		 5427 }
5428
25dbc73a
AM		 5429 if (contents != NULL
5430 && elf_section_data (isec)->this_hdr.contents != contents)
5431 {
5432 if (!changed && !link_info->keep_memory)
5433 free (contents);
5434 else
5435 {
5436 /* Cache the section contents for elf_link_input_bfd. */
5437 elf_section_data (isec)->this_hdr.contents = contents;
5438 }
5439 }
252b5132 5440
25dbc73a
AM		 5441 if (elf_section_data (isec)->relocs != internal_relocs)
5442 {
5443 if (!changed)
5444 free (internal_relocs);
5445 else
5446 elf_section_data (isec)->relocs = internal_relocs;
5447 }
252b5132 5448
25dbc73a 5449 *again = changed;
b34976b6 5450 return TRUE;
25dbc73a
AM		 5451
5452 error_return:
5453 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5454 free (isymbuf);
5455 if (contents != NULL
5456 && elf_section_data (isec)->this_hdr.contents != contents)
5457 free (contents);
5458 if (internal_relocs != NULL
5459 && elf_section_data (isec)->relocs != internal_relocs)
5460 free (internal_relocs);
5461 return FALSE;
252b5132 5462}
252b5132 5463\f
8a696751
AM		 5464/* What to do when ld finds relocations against symbols defined in
5465 discarded sections. */
5466
5467static unsigned int
5468ppc_elf_action_discarded (asection *sec)
5469{
5470 if (strcmp (".fixup", sec->name) == 0)
5471 return 0;
5472
5473 if (strcmp (".got2", sec->name) == 0)
5474 return 0;
5475
5476 return _bfd_elf_default_action_discarded (sec);
5477}
c9a2f333 5478\f
25dbc73a 5479/* Fill in the address for a pointer generated in a linker section. */
252b5132 5480
25dbc73a 5481static bfd_vma
76750a2f 5482elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM		 5483 elf_linker_section_t *lsect,
5484 struct elf_link_hash_entry *h,
5485 bfd_vma relocation,
2bb04cf2 5486 const Elf_Internal_Rela *rel)
25dbc73a
AM		 5487{
5488 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 5489
25dbc73a 5490 BFD_ASSERT (lsect != NULL);
252b5132 5491
25dbc73a 5492 if (h != NULL)
252b5132 5493 {
25dbc73a
AM		 5494 /* Handle global symbol. */
5495 struct ppc_elf_link_hash_entry *eh;
252b5132 5496
25dbc73a 5497 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM		 5498 BFD_ASSERT (eh->elf.def_regular);
5499 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM		 5500 }
5501 else
5502 {
5503 /* Handle local symbol. */
5504 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 5505
25dbc73a 5506 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM		 5507 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5508 }
252b5132 5509
76750a2f
AM		 5510 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5511 rel->r_addend,
5512 lsect);
5513 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 5514
76750a2f
AM		 5515 /* Offset will always be a multiple of four, so use the bottom bit
5516 as a "written" flag. */
5517 if ((linker_section_ptr->offset & 1) == 0)
5518 {
5519 bfd_put_32 (lsect->section->owner,
5520 relocation + linker_section_ptr->addend,
5521 lsect->section->contents + linker_section_ptr->offset);
5522 linker_section_ptr->offset += 1;
252b5132
RH		 5523 }
5524
25dbc73a 5525 relocation = (lsect->section->output_offset
76750a2f 5526 + linker_section_ptr->offset - 1
c9a2f333 5527 - 0x8000);
252b5132 5528
25dbc73a
AM		 5529#ifdef DEBUG
5530 fprintf (stderr,
5531 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5532 lsect->name, (long) relocation, (long) relocation);
5533#endif
252b5132 5534
25dbc73a
AM		 5535 /* Subtract out the addend, because it will get added back in by the normal
5536 processing. */
5537 return relocation - linker_section_ptr->addend;
252b5132 5538}
25dbc73a 5539
252b5132
RH		 5540/* The RELOCATE_SECTION function is called by the ELF backend linker
5541 to handle the relocations for a section.
5542
5543 The relocs are always passed as Rela structures; if the section
5544 actually uses Rel structures, the r_addend field will always be
5545 zero.
5546
5547 This function is responsible for adjust the section contents as
5548 necessary, and (if using Rela relocs and generating a
1049f94e 5549 relocatable output file) adjusting the reloc addend as
252b5132
RH		 5550 necessary.
5551
5552 This function does not have to worry about setting the reloc
5553 address or the reloc symbol index.
5554
5555 LOCAL_SYMS is a pointer to the swapped in local symbols.
5556
5557 LOCAL_SECTIONS is an array giving the section in the input file
5558 corresponding to the st_shndx field of each local symbol.
5559
5560 The global hash table entry for the global symbols can be found
5561 via elf_sym_hashes (input_bfd).
5562
1049f94e 5563 When generating relocatable output, this function must handle
252b5132
RH		 5564 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5565 going to be the section symbol corresponding to the output
5566 section, which means that the addend must be adjusted
5567 accordingly. */
5568
b34976b6 5569static bfd_boolean
55fd94b0
AM		 5570ppc_elf_relocate_section (bfd *output_bfd,
5571 struct bfd_link_info *info,
5572 bfd *input_bfd,
5573 asection *input_section,
5574 bfd_byte *contents,
5575 Elf_Internal_Rela *relocs,
5576 Elf_Internal_Sym *local_syms,
5577 asection **local_sections)
252b5132 5578{
7619e7c7
AM		 5579 Elf_Internal_Shdr *symtab_hdr;
5580 struct elf_link_hash_entry **sym_hashes;
5581 struct ppc_elf_link_hash_table *htab;
5582 Elf_Internal_Rela *rel;
5583 Elf_Internal_Rela *relend;
5584 Elf_Internal_Rela outrel;
5585 bfd_byte *loc;
a6aa5195 5586 asection *got2, *sreloc = NULL;
252b5132 5587 bfd_vma *local_got_offsets;
b34976b6 5588 bfd_boolean ret = TRUE;
4fe5ca5b 5589 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
b34976b6 5590
252b5132 5591#ifdef DEBUG
d003868e
AM		 5592 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5593 "%ld relocations%s",
5594 input_bfd, input_section,
5595 (long) input_section->reloc_count,
5596 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH		 5597#endif
5598
a6aa5195
AM		 5599 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5600
e47cd125 5601 /* Initialize howto table if not already done. */
8da6118f 5602 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH		 5603 ppc_elf_howto_init ();
5604
7619e7c7 5605 htab = ppc_elf_hash_table (info);
252b5132 5606 local_got_offsets = elf_local_got_offsets (input_bfd);
7619e7c7
AM		 5607 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5608 sym_hashes = elf_sym_hashes (input_bfd);
5609 rel = relocs;
5610 relend = relocs + input_section->reloc_count;
252b5132
RH		 5611 for (; rel < relend; rel++)
5612 {
7619e7c7
AM		 5613 enum elf_ppc_reloc_type r_type;
5614 bfd_vma addend;
5615 bfd_reloc_status_type r;
5616 Elf_Internal_Sym *sym;
5617 asection *sec;
5618 struct elf_link_hash_entry *h;
5619 const char *sym_name;
252b5132
RH		 5620 reloc_howto_type *howto;
5621 unsigned long r_symndx;
5622 bfd_vma relocation;
7619e7c7 5623 bfd_vma branch_bit, insn, from;
7619e7c7
AM		 5624 bfd_boolean unresolved_reloc;
5625 bfd_boolean warned;
5626 unsigned int tls_type, tls_mask, tls_gd;
5627
55fd94b0
AM		 5628 r_type = ELF32_R_TYPE (rel->r_info);
5629 sym = NULL;
5630 sec = NULL;
5631 h = NULL;
7619e7c7
AM		 5632 unresolved_reloc = FALSE;
5633 warned = FALSE;
252b5132 5634 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 5635
252b5132
RH		 5636 if (r_symndx < symtab_hdr->sh_info)
5637 {
5638 sym = local_syms + r_symndx;
5639 sec = local_sections[r_symndx];
26c61ae5 5640 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 5641
8517fae7 5642 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 5643 }
5644 else
5645 {
b2a8e766
AM		 5646 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5647 r_symndx, symtab_hdr, sym_hashes,
5648 h, sec, relocation,
5649 unresolved_reloc, warned);
9abc968f 5650
252b5132 5651 sym_name = h->root.root.string;
7619e7c7
AM		 5652 }
5653
ab96bf03
AM		 5654 if (sec != NULL && elf_discarded_section (sec))
5655 {
5656 /* For relocs against symbols from removed linkonce sections,
5657 or sections discarded by a linker script, we just want the
5658 section contents zeroed. Avoid any special processing. */
5659 howto = NULL;
5660 if (r_type < R_PPC_max)
5661 howto = ppc_elf_howto_table[r_type];
5662 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
5663 rel->r_info = 0;
5664 rel->r_addend = 0;
5665 continue;
5666 }
5667
5668 if (info->relocatable)
5669 {
5670 if (got2 != NULL
5671 && r_type == R_PPC_PLTREL24
5672 && rel->r_addend >= 32768)
5673 {
5674 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5675 addend specifies the GOT pointer offset within .got2. */
5676 rel->r_addend += got2->output_offset;
5677 }
5678 continue;
5679 }
5680
7619e7c7
AM		 5681 /* TLS optimizations. Replace instruction sequences and relocs
5682 based on information we collected in tls_optimize. We edit
5683 RELOCS so that --emit-relocs will output something sensible
5684 for the final instruction stream. */
5685 tls_mask = 0;
5686 tls_gd = 0;
5687 if (IS_PPC_TLS_RELOC (r_type))
5688 {
5689 if (h != NULL)
5690 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5691 else if (local_got_offsets != NULL)
5692 {
5693 char *lgot_masks;
5694 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5695 tls_mask = lgot_masks[r_symndx];
5696 }
5697 }
5698
5699 /* Ensure reloc mapping code below stays sane. */
5700 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5701 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5702 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5703 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5704 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5705 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5706 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5707 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5708 abort ();
5709 switch (r_type)
5710 {
5711 default:
5712 break;
5713
5714 case R_PPC_GOT_TPREL16:
5715 case R_PPC_GOT_TPREL16_LO:
5716 if (tls_mask != 0
5717 && (tls_mask & TLS_TPREL) == 0)
5718 {
5719 bfd_vma insn;
4fe5ca5b 5720 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7619e7c7
AM		 5721 insn &= 31 << 21;
5722 insn |= 0x3c020000; /* addis 0,2,0 */
4fe5ca5b 5723 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7619e7c7
AM		 5724 r_type = R_PPC_TPREL16_HA;
5725 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5726 }
5727 break;
5728
5729 case R_PPC_TLS:
5730 if (tls_mask != 0
5731 && (tls_mask & TLS_TPREL) == 0)
5732 {
5733 bfd_vma insn, rtra;
5734 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5735 if ((insn & ((31 << 26) | (31 << 11)))
5736 == ((31 << 26) | (2 << 11)))
5737 rtra = insn & ((1 << 26) - (1 << 16));
5738 else if ((insn & ((31 << 26) | (31 << 16)))
5739 == ((31 << 26) | (2 << 16)))
5740 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5741 else
5742 abort ();
5743 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5744 /* add -> addi. */
5745 insn = 14 << 26;
5746 else if ((insn & (31 << 1)) == 23 << 1
5747 && ((insn & (31 << 6)) < 14 << 6
5748 || ((insn & (31 << 6)) >= 16 << 6
5749 && (insn & (31 << 6)) < 24 << 6)))
5750 /* load and store indexed -> dform. */
5751 insn = (32 | ((insn >> 6) & 31)) << 26;
5752 else if ((insn & (31 << 1)) == 21 << 1
5753 && (insn & (0x1a << 6)) == 0)
5754 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5755 insn = (((58 | ((insn >> 6) & 4)) << 26)
5756 | ((insn >> 6) & 1));
5757 else if ((insn & (31 << 1)) == 21 << 1
5758 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5759 /* lwax -> lwa. */
5760 insn = (58 << 26) | 2;
5761 else
5762 abort ();
5763 insn |= rtra;
5764 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5765 r_type = R_PPC_TPREL16_LO;
5766 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 5767
7619e7c7 5768 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM		 5769 PPC_TPREL16_LO which is at low-order half-word. */
5770 rel->r_offset += d_offset;
7619e7c7
AM		 5771 }
5772 break;
5773
5774 case R_PPC_GOT_TLSGD16_HI:
5775 case R_PPC_GOT_TLSGD16_HA:
5776 tls_gd = TLS_TPRELGD;
5777 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5778 goto tls_gdld_hi;
5779 break;
5780
5781 case R_PPC_GOT_TLSLD16_HI:
5782 case R_PPC_GOT_TLSLD16_HA:
5783 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5784 {
5785 tls_gdld_hi:
5786 if ((tls_mask & tls_gd) != 0)
5787 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5788 + R_PPC_GOT_TPREL16);
5789 else
5790 {
5791 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 5792 rel->r_offset -= d_offset;
7619e7c7
AM		 5793 r_type = R_PPC_NONE;
5794 }
5795 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5796 }
5797 break;
5798
5799 case R_PPC_GOT_TLSGD16:
5800 case R_PPC_GOT_TLSGD16_LO:
5801 tls_gd = TLS_TPRELGD;
5802 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5803 goto tls_get_addr_check;
5804 break;
5805
5806 case R_PPC_GOT_TLSLD16:
5807 case R_PPC_GOT_TLSLD16_LO:
5808 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5809 {
5810 tls_get_addr_check:
5811 if (rel + 1 < relend)
5812 {
5813 enum elf_ppc_reloc_type r_type2;
5814 unsigned long r_symndx2;
5815 struct elf_link_hash_entry *h2;
87d243f1 5816 bfd_vma insn1, insn2;
7619e7c7
AM		 5817 bfd_vma offset;
5818
5819 /* The next instruction should be a call to
5820 __tls_get_addr. Peek at the reloc to be sure. */
55fd94b0 5821 r_type2 = ELF32_R_TYPE (rel[1].r_info);
7619e7c7
AM		 5822 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5823 if (r_symndx2 < symtab_hdr->sh_info
5824 || (r_type2 != R_PPC_REL14
5825 && r_type2 != R_PPC_REL14_BRTAKEN
5826 && r_type2 != R_PPC_REL14_BRNTAKEN
5827 && r_type2 != R_PPC_REL24
5828 && r_type2 != R_PPC_PLTREL24))
5829 break;
5830
5831 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5832 while (h2->root.type == bfd_link_hash_indirect
5833 || h2->root.type == bfd_link_hash_warning)
5834 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5835 if (h2 == NULL || h2 != htab->tls_get_addr)
5836 break;
5837
5838 /* OK, it checks out. Replace the call. */
5839 offset = rel[1].r_offset;
5840 insn1 = bfd_get_32 (output_bfd,
4fe5ca5b 5841 contents + rel->r_offset - d_offset);
7619e7c7
AM		 5842 if ((tls_mask & tls_gd) != 0)
5843 {
5844 /* IE */
5845 insn1 &= (1 << 26) - 1;
5846 insn1 |= 32 << 26; /* lwz */
5847 insn2 = 0x7c631214; /* add 3,3,2 */
5848 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
e1710606 5849 rel[1].r_addend = 0;
7619e7c7
AM		 5850 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5851 + R_PPC_GOT_TPREL16);
5852 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5853 }
5854 else
5855 {
5856 /* LE */
5857 insn1 = 0x3c620000; /* addis 3,2,0 */
5858 insn2 = 0x38630000; /* addi 3,3,0 */
5859 if (tls_gd == 0)
5860 {
5861 /* Was an LD reloc. */
5862 r_symndx = 0;
e1918d23 5863 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 5864 }
5865 r_type = R_PPC_TPREL16_HA;
5866 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5867 rel[1].r_info = ELF32_R_INFO (r_symndx,
5868 R_PPC_TPREL16_LO);
4fe5ca5b 5869 rel[1].r_offset += d_offset;
e1710606 5870 rel[1].r_addend = rel->r_addend;
7619e7c7 5871 }
4fe5ca5b 5872 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset);
7619e7c7 5873 bfd_put_32 (output_bfd, insn2, contents + offset);
7619e7c7
AM		 5874 if (tls_gd == 0)
5875 {
5876 /* We changed the symbol on an LD reloc. Start over
70bccea4 5877 in order to get h, sym, sec etc. right. */
7619e7c7
AM		 5878 rel--;
5879 continue;
5880 }
5881 }
252b5132 5882 }
7619e7c7
AM		 5883 break;
5884 }
5885
5886 /* Handle other relocations that tweak non-addend part of insn. */
5887 branch_bit = 0;
5888 switch (r_type)
5889 {
5890 default:
5891 break;
5892
5893 /* Branch taken prediction relocations. */
5894 case R_PPC_ADDR14_BRTAKEN:
5895 case R_PPC_REL14_BRTAKEN:
5896 branch_bit = BRANCH_PREDICT_BIT;
5897 /* Fall thru */
5898
4cc11e76 5899 /* Branch not taken prediction relocations. */
7619e7c7
AM		 5900 case R_PPC_ADDR14_BRNTAKEN:
5901 case R_PPC_REL14_BRNTAKEN:
5902 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5903 insn &= ~BRANCH_PREDICT_BIT;
5904 insn |= branch_bit;
5905
5906 from = (rel->r_offset
5907 + input_section->output_offset
5908 + input_section->output_section->vma);
5909
5910 /* Invert 'y' bit if not the default. */
5911 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5912 insn ^= BRANCH_PREDICT_BIT;
5913
5914 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5915 break;
252b5132
RH		 5916 }
5917
7619e7c7
AM		 5918 addend = rel->r_addend;
5919 tls_type = 0;
5920 howto = NULL;
55fd94b0
AM		 5921 if (r_type < R_PPC_max)
5922 howto = ppc_elf_howto_table[r_type];
7619e7c7 5923 switch (r_type)
252b5132
RH		 5924 {
5925 default:
7619e7c7 5926 (*_bfd_error_handler)
d003868e
AM		 5927 (_("%B: unknown relocation type %d for symbol %s"),
5928 input_bfd, (int) r_type, sym_name);
252b5132
RH		 5929
5930 bfd_set_error (bfd_error_bad_value);
b34976b6 5931 ret = FALSE;
252b5132
RH		 5932 continue;
5933
7619e7c7
AM		 5934 case R_PPC_NONE:
5935 case R_PPC_TLS:
5936 case R_PPC_EMB_MRKREF:
5937 case R_PPC_GNU_VTINHERIT:
5938 case R_PPC_GNU_VTENTRY:
7595d193
L		 5939 continue;
5940
7619e7c7
AM		 5941 /* GOT16 relocations. Like an ADDR16 using the symbol's
5942 address in the GOT as relocation value instead of the
5943 symbol's value itself. Also, create a GOT entry for the
5944 symbol and put the symbol value there. */
5945 case R_PPC_GOT_TLSGD16:
5946 case R_PPC_GOT_TLSGD16_LO:
5947 case R_PPC_GOT_TLSGD16_HI:
5948 case R_PPC_GOT_TLSGD16_HA:
5949 tls_type = TLS_TLS | TLS_GD;
5950 goto dogot;
5951
5952 case R_PPC_GOT_TLSLD16:
5953 case R_PPC_GOT_TLSLD16_LO:
5954 case R_PPC_GOT_TLSLD16_HI:
5955 case R_PPC_GOT_TLSLD16_HA:
5956 tls_type = TLS_TLS | TLS_LD;
5957 goto dogot;
5958
5959 case R_PPC_GOT_TPREL16:
5960 case R_PPC_GOT_TPREL16_LO:
5961 case R_PPC_GOT_TPREL16_HI:
5962 case R_PPC_GOT_TPREL16_HA:
5963 tls_type = TLS_TLS | TLS_TPREL;
5964 goto dogot;
5965
5966 case R_PPC_GOT_DTPREL16:
5967 case R_PPC_GOT_DTPREL16_LO:
5968 case R_PPC_GOT_DTPREL16_HI:
5969 case R_PPC_GOT_DTPREL16_HA:
5970 tls_type = TLS_TLS | TLS_DTPREL;
5971 goto dogot;
5972
5973 case R_PPC_GOT16:
5974 case R_PPC_GOT16_LO:
5975 case R_PPC_GOT16_HI:
5976 case R_PPC_GOT16_HA:
5977 dogot:
5978 {
5979 /* Relocation is to the entry for this symbol in the global
5980 offset table. */
5981 bfd_vma off;
5982 bfd_vma *offp;
5983 unsigned long indx;
5984
5985 if (htab->got == NULL)
5986 abort ();
5987
5988 indx = 0;
5989 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 5990 && (h == NULL
f5385ebf 5991 || !h->def_dynamic))
7619e7c7
AM		 5992 offp = &htab->tlsld_got.offset;
5993 else if (h != NULL)
5994 {
5995 bfd_boolean dyn;
5996 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 5997 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM		 5998 || (info->shared
5999 && SYMBOL_REFERENCES_LOCAL (info, h)))
6000 /* This is actually a static link, or it is a
6001 -Bsymbolic link and the symbol is defined
6002 locally, or the symbol was forced to be local
6003 because of a version file. */
6004 ;
6005 else
6006 {
6007 indx = h->dynindx;
6008 unresolved_reloc = FALSE;
6009 }
6010 offp = &h->got.offset;
6011 }
6012 else
6013 {
6014 if (local_got_offsets == NULL)
6015 abort ();
6016 offp = &local_got_offsets[r_symndx];
6017 }
6018
6019 /* The offset must always be a multiple of 4. We use the
6020 least significant bit to record whether we have already
6021 processed this entry. */
6022 off = *offp;
6023 if ((off & 1) != 0)
6024 off &= ~1;
6025 else
6026 {
70bccea4
AM		 6027 unsigned int tls_m = (tls_mask
6028 & (TLS_LD | TLS_GD | TLS_DTPREL
6029 | TLS_TPREL | TLS_TPRELGD));
6030
6031 if (offp == &htab->tlsld_got.offset)
6032 tls_m = TLS_LD;
6033 else if (h == NULL
f5385ebf 6034 || !h->def_dynamic)
70bccea4
AM		 6035 tls_m &= ~TLS_LD;
6036
6037 /* We might have multiple got entries for this sym.
6038 Initialize them all. */
6039 do
7619e7c7 6040 {
70bccea4
AM		 6041 int tls_ty = 0;
6042
6043 if ((tls_m & TLS_LD) != 0)
7619e7c7 6044 {
70bccea4
AM		 6045 tls_ty = TLS_TLS | TLS_LD;
6046 tls_m &= ~TLS_LD;
6047 }
6048 else if ((tls_m & TLS_GD) != 0)
6049 {
6050 tls_ty = TLS_TLS | TLS_GD;
6051 tls_m &= ~TLS_GD;
6052 }
6053 else if ((tls_m & TLS_DTPREL) != 0)
6054 {
6055 tls_ty = TLS_TLS | TLS_DTPREL;
6056 tls_m &= ~TLS_DTPREL;
6057 }
6058 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6059 {
6060 tls_ty = TLS_TLS | TLS_TPREL;
6061 tls_m = 0;
7619e7c7 6062 }
7619e7c7 6063
70bccea4 6064 /* Generate relocs for the dynamic linker. */
4e795f50
AM		 6065 if ((info->shared || indx != 0)
6066 && (h == NULL
6067 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6068 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 6069 {
70bccea4
AM		 6070 outrel.r_offset = (htab->got->output_section->vma
6071 + htab->got->output_offset
6072 + off);
e515b051 6073 outrel.r_addend = 0;
70bccea4
AM		 6074 if (tls_ty & (TLS_LD | TLS_GD))
6075 {
6076 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM		 6077 if (tls_ty == (TLS_TLS | TLS_GD))
6078 {
6079 loc = htab->relgot->contents;
6080 loc += (htab->relgot->reloc_count++
6081 * sizeof (Elf32_External_Rela));
6082 bfd_elf32_swap_reloca_out (output_bfd,
6083 &outrel, loc);
e515b051 6084 outrel.r_offset += 4;
70bccea4
AM		 6085 outrel.r_info
6086 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM		 6087 }
6088 }
6089 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6090 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6091 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6092 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6093 else if (indx == 0)
6094 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6095 else
6096 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
70bccea4 6097 if (indx == 0)
e515b051
AM		 6098 {
6099 outrel.r_addend += relocation;
6100 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 6101 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 6102 }
70bccea4
AM		 6103 loc = htab->relgot->contents;
6104 loc += (htab->relgot->reloc_count++
6105 * sizeof (Elf32_External_Rela));
6106 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM		 6107 }
6108
70bccea4
AM		 6109 /* Init the .got section contents if we're not
6110 emitting a reloc. */
6111 else
7619e7c7 6112 {
70bccea4
AM		 6113 bfd_vma value = relocation;
6114
7b609f53
AM		 6115 if (tls_ty == (TLS_TLS | TLS_LD))
6116 value = 1;
6117 else if (tls_ty != 0)
70bccea4 6118 {
e1918d23 6119 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 6120 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 6121 value += DTP_OFFSET - TP_OFFSET;
70bccea4 6122
7b609f53
AM		 6123 if (tls_ty == (TLS_TLS | TLS_GD))
6124 {
6125 bfd_put_32 (output_bfd, value,
6126 htab->got->contents + off + 4);
6127 value = 1;
6128 }
70bccea4 6129 }
70bccea4
AM		 6130 bfd_put_32 (output_bfd, value,
6131 htab->got->contents + off);
7619e7c7 6132 }
70bccea4
AM		 6133
6134 off += 4;
6135 if (tls_ty & (TLS_LD | TLS_GD))
6136 off += 4;
7619e7c7 6137 }
70bccea4
AM		 6138 while (tls_m != 0);
6139
6140 off = *offp;
6141 *offp = off | 1;
7619e7c7
AM		 6142 }
6143
6144 if (off >= (bfd_vma) -2)
6145 abort ();
6146
70bccea4
AM		 6147 if ((tls_type & TLS_TLS) != 0)
6148 {
6149 if (tls_type != (TLS_TLS | TLS_LD))
6150 {
6151 if ((tls_mask & TLS_LD) != 0
6152 && !(h == NULL
f5385ebf 6153 || !h->def_dynamic))
70bccea4
AM		 6154 off += 8;
6155 if (tls_type != (TLS_TLS | TLS_GD))
6156 {
6157 if ((tls_mask & TLS_GD) != 0)
6158 off += 8;
6159 if (tls_type != (TLS_TLS | TLS_DTPREL))
6160 {
6161 if ((tls_mask & TLS_DTPREL) != 0)
6162 off += 4;
6163 }
6164 }
6165 }
6166 }
6167
3b36f7e6
AM		 6168 relocation = htab->got->output_offset + off;
6169 relocation -= htab->elf.hgot->root.u.def.value;
7619e7c7
AM		 6170
6171 /* Addends on got relocations don't make much sense.
6172 x+off@got is actually x@got+off, and since the got is
6173 generated by a hash table traversal, the value in the
6174 got at entry m+n bears little relation to the entry m. */
6175 if (addend != 0)
6176 (*_bfd_error_handler)
d003868e
AM		 6177 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6178 input_bfd,
6179 input_section,
7619e7c7 6180 (long) rel->r_offset,
7b609f53 6181 howto->name,
7619e7c7
AM		 6182 sym_name);
6183 }
70bccea4 6184 break;
7619e7c7 6185
252b5132 6186 /* Relocations that need no special processing. */
7619e7c7 6187 case R_PPC_LOCAL24PC:
252b5132
RH		 6188 /* It makes no sense to point a local relocation
6189 at a symbol not in this object. */
7b609f53 6190 if (unresolved_reloc)
252b5132 6191 {
464e1740
ILT		 6192 if (! (*info->callbacks->undefined_symbol) (info,
6193 h->root.root.string,
6194 input_bfd,
6195 input_section,
5cc7c785 6196 rel->r_offset,
b34976b6
AM		 6197 TRUE))
6198 return FALSE;
252b5132
RH		 6199 continue;
6200 }
6201 break;
6202
7619e7c7
AM		 6203 case R_PPC_DTPREL16:
6204 case R_PPC_DTPREL16_LO:
6205 case R_PPC_DTPREL16_HI:
6206 case R_PPC_DTPREL16_HA:
e1918d23 6207 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 6208 break;
6209
70bccea4
AM		 6210 /* Relocations that may need to be propagated if this is a shared
6211 object. */
7619e7c7
AM		 6212 case R_PPC_TPREL16:
6213 case R_PPC_TPREL16_LO:
6214 case R_PPC_TPREL16_HI:
6215 case R_PPC_TPREL16_HA:
e1918d23 6216 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM		 6217 /* The TPREL16 relocs shouldn't really be used in shared
6218 libs as they will result in DT_TEXTREL being set, but
6219 support them anyway. */
6220 goto dodyn;
6221
6222 case R_PPC_TPREL32:
e1918d23 6223 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM		 6224 goto dodyn;
6225
6226 case R_PPC_DTPREL32:
e1918d23 6227 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 6228 goto dodyn;
6229
e515b051
AM		 6230 case R_PPC_DTPMOD32:
6231 relocation = 1;
6232 addend = 0;
6233 goto dodyn;
6234
d7128ce4
AM		 6235 case R_PPC_REL16:
6236 case R_PPC_REL16_LO:
6237 case R_PPC_REL16_HI:
6238 case R_PPC_REL16_HA:
6239 break;
6240
7619e7c7
AM		 6241 case R_PPC_REL24:
6242 case R_PPC_REL32:
6243 case R_PPC_REL14:
6244 case R_PPC_REL14_BRTAKEN:
6245 case R_PPC_REL14_BRNTAKEN:
252b5132
RH		 6246 /* If these relocations are not to a named symbol, they can be
6247 handled right here, no need to bother the dynamic linker. */
f6c52c13 6248 if (SYMBOL_REFERENCES_LOCAL (info, h)
3b36f7e6 6249 || h == htab->elf.hgot)
252b5132 6250 break;
70bccea4 6251 /* fall through */
252b5132 6252
70bccea4
AM		 6253 /* Relocations that always need to be propagated if this is a shared
6254 object. */
7619e7c7
AM		 6255 case R_PPC_ADDR32:
6256 case R_PPC_ADDR24:
6257 case R_PPC_ADDR16:
6258 case R_PPC_ADDR16_LO:
6259 case R_PPC_ADDR16_HI:
6260 case R_PPC_ADDR16_HA:
6261 case R_PPC_ADDR14:
6262 case R_PPC_ADDR14_BRTAKEN:
6263 case R_PPC_ADDR14_BRNTAKEN:
6264 case R_PPC_UADDR32:
6265 case R_PPC_UADDR16:
7619e7c7 6266 dodyn:
c87b5a93
AM		 6267 if ((input_section->flags & SEC_ALLOC) == 0)
6268 break;
6269 /* Fall thru. */
6270
ee05f2fe 6271 if ((info->shared
4e795f50
AM		 6272 && (h == NULL
6273 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6274 || h->root.type != bfd_link_hash_undefweak)
ee05f2fe 6275 && (MUST_BE_DYN_RELOC (r_type)
f6c52c13 6276 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM		 6277 || (ELIMINATE_COPY_RELOCS
6278 && !info->shared
ee05f2fe
AM		 6279 && h != NULL
6280 && h->dynindx != -1
f5385ebf
AM		 6281 && !h->non_got_ref
6282 && h->def_dynamic
6283 && !h->def_regular))
252b5132 6284 {
0bb2d96a 6285 int skip;
252b5132
RH		 6286
6287#ifdef DEBUG
55fd94b0
AM		 6288 fprintf (stderr, "ppc_elf_relocate_section needs to "
6289 "create relocation for %s\n",
70bccea4
AM		 6290 (h && h->root.root.string
6291 ? h->root.root.string : "<unknown>"));
252b5132
RH		 6292#endif
6293
6294 /* When generating a shared object, these relocations
70bccea4
AM		 6295 are copied into the output file to be resolved at run
6296 time. */
252b5132
RH		 6297 if (sreloc == NULL)
6298 {
6299 const char *name;
6300
6301 name = (bfd_elf_string_from_elf_section
6302 (input_bfd,
6303 elf_elfheader (input_bfd)->e_shstrndx,
6304 elf_section_data (input_section)->rel_hdr.sh_name));
6305 if (name == NULL)
b34976b6 6306 return FALSE;
252b5132 6307
0112cd26 6308 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
252b5132
RH		 6309 && strcmp (bfd_get_section_name (input_bfd,
6310 input_section),
6311 name + 5) == 0);
6312
7619e7c7 6313 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
252b5132
RH		 6314 BFD_ASSERT (sreloc != NULL);
6315 }
6316
0bb2d96a 6317 skip = 0;
252b5132 6318
c629eae0
JJ		 6319 outrel.r_offset =
6320 _bfd_elf_section_offset (output_bfd, info, input_section,
6321 rel->r_offset);
0bb2d96a
JJ		 6322 if (outrel.r_offset == (bfd_vma) -1
6323 || outrel.r_offset == (bfd_vma) -2)
6324 skip = (int) outrel.r_offset;
252b5132
RH		 6325 outrel.r_offset += (input_section->output_section->vma
6326 + input_section->output_offset);
6327
6328 if (skip)
6329 memset (&outrel, 0, sizeof outrel);
f6c52c13 6330 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 6331 {
7619e7c7 6332 unresolved_reloc = FALSE;
252b5132
RH		 6333 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6334 outrel.r_addend = rel->r_addend;
6335 }
6336 else
6337 {
47388f4c
AM		 6338 outrel.r_addend = relocation + rel->r_addend;
6339
252b5132 6340 if (r_type == R_PPC_ADDR32)
47388f4c 6341 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH		 6342 else
6343 {
6344 long indx;
6345
47388f4c 6346 if (bfd_is_abs_section (sec))
252b5132
RH		 6347 indx = 0;
6348 else if (sec == NULL || sec->owner == NULL)
6349 {
6350 bfd_set_error (bfd_error_bad_value);
b34976b6 6351 return FALSE;
252b5132
RH		 6352 }
6353 else
6354 {
6355 asection *osec;
6356
47388f4c
AM		 6357 /* We are turning this relocation into one
6358 against a section symbol. It would be
6359 proper to subtract the symbol's value,
6360 osec->vma, from the emitted reloc addend,
6361 but ld.so expects buggy relocs. */
252b5132
RH		 6362 osec = sec->output_section;
6363 indx = elf_section_data (osec)->dynindx;
74541ad4
AM		 6364 if (indx == 0)
6365 {
6366 osec = htab->elf.text_index_section;
6367 indx = elf_section_data (osec)->dynindx;
6368 }
6369 BFD_ASSERT (indx != 0);
252b5132 6370#ifdef DEBUG
74541ad4 6371 if (indx == 0)
e460dd0d 6372 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM		 6373 indx, osec->name, osec->flags,
6374 h->root.root.string);
252b5132
RH		 6375#endif
6376 }
6377
6378 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH		 6379 }
6380 }
6381
947216bf
AM		 6382 loc = sreloc->contents;
6383 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6384 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 6385
2243deae 6386 if (skip == -1)
252b5132 6387 continue;
2243deae
L		 6388
6389 /* This reloc will be computed at runtime. We clear the memory
6390 so that it contains predictable value. */
6391 if (! skip
6392 && ((input_section->flags & SEC_ALLOC) != 0
6393 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6394 {
6395 relocation = howto->pc_relative ? outrel.r_offset : 0;
6396 addend = 0;
6397 break;
6398 }
252b5132 6399 }
252b5132
RH		 6400 break;
6401
b4a38de6
AM		 6402 case R_PPC_RELAX32PC_PLT:
6403 case R_PPC_RELAX32_PLT:
a6aa5195
AM		 6404 {
6405 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6406
4a3dc543 6407 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 6408 relocation = (htab->glink->output_section->vma
6409 + htab->glink->output_offset
6410 + ent->glink_offset);
6411 else
6412 relocation = (htab->plt->output_section->vma
6413 + htab->plt->output_offset
6414 + ent->plt.offset);
6415 addend = 0;
6416 }
b4a38de6
AM		 6417 if (r_type == R_PPC_RELAX32_PLT)
6418 goto relax32;
6419 /* Fall thru */
6420
f31a141e
AM		 6421 case R_PPC_RELAX32PC:
6422 relocation -= (input_section->output_section->vma
6423 + input_section->output_offset
6424 + rel->r_offset - 4);
6425 /* Fall thru */
b4a38de6 6426
deaaf2f3 6427 case R_PPC_RELAX32:
b4a38de6 6428 relax32:
9abc968f
AM		 6429 {
6430 unsigned long t0;
6431 unsigned long t1;
6432
6433 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6434 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6435
6436 /* We're clearing the bits for R_PPC_ADDR16_HA
6437 and R_PPC_ADDR16_LO here. */
6438 t0 &= ~0xffff;
6439 t1 &= ~0xffff;
6440
6441 /* t0 is HA, t1 is LO */
6442 relocation += addend;
6443 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6444 t1 |= relocation & 0xffff;
6445
6446 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6447 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6448 }
8517fae7 6449 continue;
deaaf2f3 6450
70bccea4 6451 /* Indirect .sdata relocation. */
7619e7c7 6452 case R_PPC_EMB_SDAI16:
c9a2f333 6453 BFD_ASSERT (htab->sdata[0].section != NULL);
7619e7c7 6454 relocation
76750a2f
AM		 6455 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6456 h, relocation, rel);
252b5132
RH		 6457 break;
6458
70bccea4 6459 /* Indirect .sdata2 relocation. */
7619e7c7 6460 case R_PPC_EMB_SDA2I16:
c9a2f333 6461 BFD_ASSERT (htab->sdata[1].section != NULL);
7619e7c7 6462 relocation
76750a2f
AM		 6463 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6464 h, relocation, rel);
252b5132
RH		 6465 break;
6466
70bccea4
AM		 6467 /* Handle the TOC16 reloc. We want to use the offset within the .got
6468 section, not the actual VMA. This is appropriate when generating
6469 an embedded ELF object, for which the .got section acts like the
6470 AIX .toc section. */
7619e7c7 6471 case R_PPC_TOC16: /* phony GOT16 relocations */
55fd94b0 6472 BFD_ASSERT (sec != NULL);
252b5132
RH		 6473 BFD_ASSERT (bfd_is_und_section (sec)
6474 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
f12123c0 6475 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
252b5132 6476
70bccea4 6477 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH		 6478 break;
6479
7619e7c7 6480 case R_PPC_PLTREL24:
252b5132 6481 /* Relocation is to the entry for this symbol in the
70bccea4 6482 procedure linkage table. */
a6aa5195
AM		 6483 {
6484 struct plt_entry *ent = find_plt_ent (h, got2, addend);
252b5132 6485
a6aa5195
AM		 6486 addend = 0;
6487 if (ent == NULL
6488 || htab->plt == NULL)
6489 {
6490 /* We didn't make a PLT entry for this symbol. This
6491 happens when statically linking PIC code, or when
6492 using -Bsymbolic. */
6493 break;
6494 }
252b5132 6495
a6aa5195 6496 unresolved_reloc = FALSE;
4a3dc543 6497 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 6498 relocation = (htab->glink->output_section->vma
6499 + htab->glink->output_offset
6500 + ent->glink_offset);
6501 else
6502 relocation = (htab->plt->output_section->vma
6503 + htab->plt->output_offset
6504 + ent->plt.offset);
6505 }
8da6118f 6506 break;
252b5132 6507
70bccea4 6508 /* Relocate against _SDA_BASE_. */
7619e7c7 6509 case R_PPC_SDAREL16:
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 6516 if (! ((CONST_STRNEQ (name, ".sdata")
5f819128 6517 && (name[6] == 0 || name[6] == '.'))
0112cd26 6518 || (CONST_STRNEQ (name, ".sbss")
5f819128 6519 && (name[5] == 0 || name[5] == '.'))))
252b5132 6520 {
55fd94b0 6521 (*_bfd_error_handler)
d003868e 6522 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 6523 "in the wrong output section (%s)"),
d003868e 6524 input_bfd,
55fd94b0
AM		 6525 sym_name,
6526 howto->name,
6527 name);
252b5132 6528 }
046183de
AM		 6529 sh = htab->sdata[0].sym;
6530 addend -= (sh->root.u.def.value
6531 + sh->root.u.def.section->output_offset
6532 + sh->root.u.def.section->output_section->vma);
252b5132
RH		 6533 }
6534 break;
6535
70bccea4 6536 /* Relocate against _SDA2_BASE_. */
7619e7c7 6537 case R_PPC_EMB_SDA2REL:
252b5132
RH		 6538 {
6539 const char *name;
046183de 6540 struct elf_link_hash_entry *sh;
252b5132 6541
55fd94b0 6542 BFD_ASSERT (sec != NULL);
252b5132 6543 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26
NC		 6544 if (! (CONST_STRNEQ (name, ".sdata2")
6545 || CONST_STRNEQ (name, ".sbss2")))
252b5132 6546 {
55fd94b0 6547 (*_bfd_error_handler)
d003868e 6548 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 6549 "in the wrong output section (%s)"),
d003868e 6550 input_bfd,
55fd94b0
AM		 6551 sym_name,
6552 howto->name,
6553 name);
c3668558 6554
252b5132 6555 bfd_set_error (bfd_error_bad_value);
b34976b6 6556 ret = FALSE;
252b5132
RH		 6557 continue;
6558 }
046183de
AM		 6559 sh = htab->sdata[1].sym;
6560 addend -= (sh->root.u.def.value
6561 + sh->root.u.def.section->output_offset
6562 + sh->root.u.def.section->output_section->vma);
252b5132
RH		 6563 }
6564 break;
6565
70bccea4 6566 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7
AM		 6567 case R_PPC_EMB_SDA21:
6568 case R_PPC_EMB_RELSDA:
252b5132
RH		 6569 {
6570 const char *name;
6571 int reg;
046183de 6572 struct elf_link_hash_entry *sh;
252b5132 6573
55fd94b0 6574 BFD_ASSERT (sec != NULL);
252b5132 6575 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 6576 if (((CONST_STRNEQ (name, ".sdata")
5f819128 6577 && (name[6] == 0 || name[6] == '.'))
0112cd26 6578 || (CONST_STRNEQ (name, ".sbss")
5f819128 6579 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH		 6580 {
6581 reg = 13;
046183de
AM		 6582 sh = htab->sdata[0].sym;
6583 addend -= (sh->root.u.def.value
6584 + sh->root.u.def.section->output_offset
6585 + sh->root.u.def.section->output_section->vma);
252b5132
RH		 6586 }
6587
0112cd26
NC		 6588 else if (CONST_STRNEQ (name, ".sdata2")
6589 || CONST_STRNEQ (name, ".sbss2"))
252b5132
RH		 6590 {
6591 reg = 2;
046183de
AM		 6592 sh = htab->sdata[1].sym;
6593 addend -= (sh->root.u.def.value
6594 + sh->root.u.def.section->output_offset
6595 + sh->root.u.def.section->output_section->vma);
252b5132
RH		 6596 }
6597
8da6118f
KH		 6598 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6599 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH		 6600 {
6601 reg = 0;
6602 }
6603
6604 else
6605 {
55fd94b0 6606 (*_bfd_error_handler)
d003868e 6607 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 6608 "in the wrong output section (%s)"),
d003868e 6609 input_bfd,
55fd94b0
AM		 6610 sym_name,
6611 howto->name,
6612 name);
252b5132
RH		 6613
6614 bfd_set_error (bfd_error_bad_value);
b34976b6 6615 ret = FALSE;
252b5132
RH		 6616 continue;
6617 }
6618
6619 if (r_type == R_PPC_EMB_SDA21)
6620 { /* fill in register field */
7619e7c7 6621 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 6622 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 6623 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH		 6624 }
6625 }
6626 break;
6627
70bccea4 6628 /* Relocate against the beginning of the section. */
7619e7c7
AM		 6629 case R_PPC_SECTOFF:
6630 case R_PPC_SECTOFF_LO:
6631 case R_PPC_SECTOFF_HI:
6632 case R_PPC_SECTOFF_HA:
55fd94b0 6633 BFD_ASSERT (sec != NULL);
252b5132 6634 addend -= sec->output_section->vma;
252b5132
RH		 6635 break;
6636
70bccea4 6637 /* Negative relocations. */
7619e7c7
AM		 6638 case R_PPC_EMB_NADDR32:
6639 case R_PPC_EMB_NADDR16:
6640 case R_PPC_EMB_NADDR16_LO:
6641 case R_PPC_EMB_NADDR16_HI:
6642 case R_PPC_EMB_NADDR16_HA:
8da6118f 6643 addend -= 2 * relocation;
252b5132
RH		 6644 break;
6645
7619e7c7
AM		 6646 case R_PPC_COPY:
6647 case R_PPC_GLOB_DAT:
6648 case R_PPC_JMP_SLOT:
6649 case R_PPC_RELATIVE:
6650 case R_PPC_PLT32:
6651 case R_PPC_PLTREL32:
6652 case R_PPC_PLT16_LO:
6653 case R_PPC_PLT16_HI:
6654 case R_PPC_PLT16_HA:
6655 case R_PPC_ADDR30:
6656 case R_PPC_EMB_RELSEC16:
6657 case R_PPC_EMB_RELST_LO:
6658 case R_PPC_EMB_RELST_HI:
6659 case R_PPC_EMB_RELST_HA:
6660 case R_PPC_EMB_BIT_FLD:
6661 (*_bfd_error_handler)
d003868e
AM		 6662 (_("%B: relocation %s is not yet supported for symbol %s."),
6663 input_bfd,
7619e7c7
AM		 6664 howto->name,
6665 sym_name);
252b5132
RH		 6666
6667 bfd_set_error (bfd_error_invalid_operation);
b34976b6 6668 ret = FALSE;
252b5132 6669 continue;
7619e7c7 6670 }
252b5132 6671
7619e7c7
AM		 6672 /* Do any further special processing. */
6673 switch (r_type)
6674 {
6675 default:
6676 break;
6677
6678 case R_PPC_ADDR16_HA:
d7128ce4 6679 case R_PPC_REL16_HA:
7619e7c7
AM		 6680 case R_PPC_SECTOFF_HA:
6681 case R_PPC_TPREL16_HA:
6682 case R_PPC_DTPREL16_HA:
7619e7c7
AM		 6683 case R_PPC_EMB_NADDR16_HA:
6684 case R_PPC_EMB_RELST_HA:
6685 /* It's just possible that this symbol is a weak symbol
7b609f53 6686 that's not actually defined anywhere. In that case,
7619e7c7
AM		 6687 'sec' would be NULL, and we should leave the symbol
6688 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 6689 if (sec == NULL)
6690 break;
6691 /* Fall thru */
6692
6693 case R_PPC_PLT16_HA:
6694 case R_PPC_GOT16_HA:
6695 case R_PPC_GOT_TLSGD16_HA:
6696 case R_PPC_GOT_TLSLD16_HA:
6697 case R_PPC_GOT_TPREL16_HA:
6698 case R_PPC_GOT_DTPREL16_HA:
6699 /* Add 0x10000 if sign bit in 0:15 is set.
6700 Bits 0:15 are not used. */
6701 addend += 0x8000;
7619e7c7 6702 break;
252b5132
RH		 6703 }
6704
252b5132 6705#ifdef DEBUG
55fd94b0
AM		 6706 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6707 "offset = %ld, addend = %ld\n",
252b5132 6708 howto->name,
8da6118f 6709 (int) r_type,
252b5132
RH		 6710 sym_name,
6711 r_symndx,
7619e7c7 6712 (long) rel->r_offset,
8da6118f 6713 (long) addend);
252b5132
RH		 6714#endif
6715
7619e7c7
AM		 6716 if (unresolved_reloc
6717 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 6718 && h->def_dynamic))
7619e7c7
AM		 6719 {
6720 (*_bfd_error_handler)
d003868e
AM		 6721 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6722 input_bfd,
6723 input_section,
7619e7c7 6724 (long) rel->r_offset,
7b609f53 6725 howto->name,
7619e7c7
AM		 6726 sym_name);
6727 ret = FALSE;
6728 }
6729
252b5132
RH		 6730 r = _bfd_final_link_relocate (howto,
6731 input_bfd,
6732 input_section,
6733 contents,
7619e7c7 6734 rel->r_offset,
252b5132
RH		 6735 relocation,
6736 addend);
6737
7619e7c7 6738 if (r != bfd_reloc_ok)
252b5132 6739 {
7619e7c7 6740 if (r == bfd_reloc_overflow)
252b5132 6741 {
7619e7c7
AM		 6742 if (warned)
6743 continue;
6744 if (h != NULL
6745 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH		 6746 && howto->pc_relative)
6747 {
6748 /* Assume this is a call protected by other code that
6749 detect the symbol is undefined. If this is the case,
6750 we can safely ignore the overflow. If not, the
6751 program is hosed anyway, and a little warning isn't
6752 going to help. */
252b5132 6753
dc1bc0c9
RH		 6754 continue;
6755 }
252b5132 6756
7619e7c7 6757 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 6758 (h ? &h->root : NULL),
7619e7c7
AM		 6759 sym_name,
6760 howto->name,
6761 rel->r_addend,
6762 input_bfd,
6763 input_section,
6764 rel->r_offset))
6765 return FALSE;
dc1bc0c9
RH		 6766 }
6767 else
6768 {
7619e7c7 6769 (*_bfd_error_handler)
d003868e
AM		 6770 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6771 input_bfd, input_section,
7b609f53 6772 (long) rel->r_offset, howto->name, sym_name, (int) r);
7619e7c7 6773 ret = FALSE;
252b5132
RH		 6774 }
6775 }
6776 }
6777
252b5132
RH		 6778#ifdef DEBUG
6779 fprintf (stderr, "\n");
6780#endif
6781
6782 return ret;
6783}
252b5132 6784\f
a6aa5195
AM		 6785#define PPC_LO(v) ((v) & 0xffff)
6786#define PPC_HI(v) (((v) >> 16) & 0xffff)
6787#define PPC_HA(v) PPC_HI ((v) + 0x8000)
6788
25dbc73a
AM		 6789/* Finish up dynamic symbol handling. We set the contents of various
6790 dynamic sections here. */
c5fccbec 6791
b34976b6 6792static bfd_boolean
25dbc73a
AM		 6793ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6794 struct bfd_link_info *info,
6795 struct elf_link_hash_entry *h,
6796 Elf_Internal_Sym *sym)
e1a9cb8e 6797{
25dbc73a 6798 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM		 6799 struct plt_entry *ent;
6800 bfd_boolean doneone;
e1a9cb8e 6801
25dbc73a
AM		 6802#ifdef DEBUG
6803 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6804 h->root.root.string);
6805#endif
e1a9cb8e 6806
25dbc73a
AM		 6807 htab = ppc_elf_hash_table (info);
6808 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 6809
a6aa5195
AM		 6810 doneone = FALSE;
6811 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6812 if (ent->plt.offset != (bfd_vma) -1)
6813 {
6814 if (!doneone)
6815 {
6816 Elf_Internal_Rela rela;
6817 bfd_byte *loc;
6818 bfd_vma reloc_index;
e1a9cb8e 6819
4a3dc543 6820 if (htab->plt_type == PLT_NEW)
9d8504b1
PB		 6821 reloc_index = ent->plt.offset / 4;
6822 else
6823 {
6824 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
6825 / htab->plt_slot_size);
6826 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 6827 && htab->plt_type == PLT_OLD)
9d8504b1
PB		 6828 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6829 }
6830
a6aa5195
AM		 6831 /* This symbol has an entry in the procedure linkage table.
6832 Set it up. */
4a3dc543 6833 if (htab->plt_type == PLT_VXWORKS)
a6aa5195 6834 {
9d8504b1
PB		 6835 bfd_vma got_offset;
6836 const bfd_vma *plt_entry;
6837
6838 /* The first three entries in .got.plt are reserved. */
6839 got_offset = (reloc_index + 3) * 4;
6840
6841 /* Use the right PLT. */
6842 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
6843 : ppc_elf_vxworks_plt_entry;
6844
6845 /* Fill in the .plt on VxWorks. */
6846 if (info->shared)
6847 {
6848 bfd_vma got_offset_hi = (got_offset >> 16)
6849 + ((got_offset & 0x8000) >> 15);
6850
6851 bfd_put_32 (output_bfd,
6852 plt_entry[0] | (got_offset_hi & 0xffff),
6853 htab->plt->contents + ent->plt.offset + 0);
6854 bfd_put_32 (output_bfd,
6855 plt_entry[1] | (got_offset & 0xffff),
6856 htab->plt->contents + ent->plt.offset + 4);
6857 }
6858 else
6859 {
636ce3f5
AM		 6860 bfd_vma got_loc
6861 = (got_offset
6862 + htab->elf.hgot->root.u.def.value
6863 + htab->elf.hgot->root.u.def.section->output_offset
6864 + htab->elf.hgot->root.u.def.section->output_section->vma);
9d8504b1
PB		 6865 bfd_vma got_loc_hi = (got_loc >> 16)
6866 + ((got_loc & 0x8000) >> 15);
6867
6868 bfd_put_32 (output_bfd,
6869 plt_entry[0] | (got_loc_hi & 0xffff),
6870 htab->plt->contents + ent->plt.offset + 0);
6871 bfd_put_32 (output_bfd,
6872 plt_entry[1] | (got_loc & 0xffff),
6873 htab->plt->contents + ent->plt.offset + 4);
6874 }
6875
6876 bfd_put_32 (output_bfd, plt_entry[2],
6877 htab->plt->contents + ent->plt.offset + 8);
6878 bfd_put_32 (output_bfd, plt_entry[3],
6879 htab->plt->contents + ent->plt.offset + 12);
6880
6881 /* This instruction is an immediate load. The value loaded is
6882 the byte offset of the R_PPC_JMP_SLOT relocation from the
6883 start of the .rela.plt section. The value is stored in the
6884 low-order 16 bits of the load instruction. */
6885 /* NOTE: It appears that this is now an index rather than a
6886 prescaled offset. */
6887 bfd_put_32 (output_bfd,
6888 plt_entry[4] | reloc_index,
6889 htab->plt->contents + ent->plt.offset + 16);
6890 /* This instruction is a PC-relative branch whose target is
6891 the start of the PLT section. The address of this branch
6892 instruction is 20 bytes beyond the start of this PLT entry.
6893 The address is encoded in bits 6-29, inclusive. The value
6894 stored is right-shifted by two bits, permitting a 26-bit
6895 offset. */
6896 bfd_put_32 (output_bfd,
6897 (plt_entry[5]
6898 | (-(ent->plt.offset + 20) & 0x03fffffc)),
6899 htab->plt->contents + ent->plt.offset + 20);
6900 bfd_put_32 (output_bfd, plt_entry[6],
6901 htab->plt->contents + ent->plt.offset + 24);
6902 bfd_put_32 (output_bfd, plt_entry[7],
6903 htab->plt->contents + ent->plt.offset + 28);
6904
6905 /* Fill in the GOT entry corresponding to this PLT slot with
6906 the address immediately after the the "bctr" instruction
6907 in this PLT entry. */
6908 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
6909 + htab->plt->output_offset
6910 + ent->plt.offset + 16),
6911 htab->sgotplt->contents + got_offset);
6912
6913 if (!info->shared)
6914 {
6915 /* Fill in a couple of entries in .rela.plt.unloaded. */
6916 loc = htab->srelplt2->contents
6917 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
6918 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
6919 * sizeof (Elf32_External_Rela));
6920
6921 /* Provide the @ha relocation for the first instruction. */
6922 rela.r_offset = (htab->plt->output_section->vma
6923 + htab->plt->output_offset
6924 + ent->plt.offset + 2);
636ce3f5 6925 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB		 6926 R_PPC_ADDR16_HA);
6927 rela.r_addend = got_offset;
6928 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6929 loc += sizeof (Elf32_External_Rela);
6930
6931 /* Provide the @l relocation for the second instruction. */
6932 rela.r_offset = (htab->plt->output_section->vma
6933 + htab->plt->output_offset
6934 + ent->plt.offset + 6);
636ce3f5 6935 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB		 6936 R_PPC_ADDR16_LO);
6937 rela.r_addend = got_offset;
6938 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6939 loc += sizeof (Elf32_External_Rela);
6940
6941 /* Provide a relocation for the GOT entry corresponding to this
6942 PLT slot. Point it at the middle of the .plt entry. */
6943 rela.r_offset = (htab->sgotplt->output_section->vma
6944 + htab->sgotplt->output_offset
6945 + got_offset);
7325306f 6946 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB		 6947 R_PPC_ADDR32);
6948 rela.r_addend = ent->plt.offset + 16;
6949 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6950 }
6951
6952 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
6953 In particular, the offset for the relocation is not the
6954 address of the PLT entry for this function, as specified
6955 by the ABI. Instead, the offset is set to the address of
6956 the GOT slot for this function. See EABI 4.4.4.1. */
6957 rela.r_offset = (htab->sgotplt->output_section->vma
6958 + htab->sgotplt->output_offset
6959 + got_offset);
6960
a6aa5195
AM		 6961 }
6962 else
6963 {
9d8504b1
PB		 6964 rela.r_offset = (htab->plt->output_section->vma
6965 + htab->plt->output_offset
6966 + ent->plt.offset);
4a3dc543 6967 if (htab->plt_type == PLT_OLD)
9d8504b1
PB		 6968 {
6969 /* We don't need to fill in the .plt. The ppc dynamic
6970 linker will fill it in. */
6971 }
6972 else
6973 {
6974 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6975 + htab->glink->output_section->vma
6976 + htab->glink->output_offset);
6977 bfd_put_32 (output_bfd, val,
6978 htab->plt->contents + ent->plt.offset);
6979 }
a6aa5195 6980 }
e1a9cb8e 6981
a6aa5195 6982 /* Fill in the entry in the .rela.plt section. */
a6aa5195
AM		 6983 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6984 rela.r_addend = 0;
e1a9cb8e 6985
a6aa5195
AM		 6986 loc = (htab->relplt->contents
6987 + reloc_index * sizeof (Elf32_External_Rela));
6988 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 6989
a6aa5195
AM		 6990 if (!h->def_regular)
6991 {
6992 /* Mark the symbol as undefined, rather than as defined in
6993 the .plt section. Leave the value alone. */
6994 sym->st_shndx = SHN_UNDEF;
6995 /* If the symbol is weak, we do need to clear the value.
6996 Otherwise, the PLT entry would provide a definition for
6997 the symbol even if the symbol wasn't defined anywhere,
6998 and so the symbol would never be NULL. */
6999 if (!h->ref_regular_nonweak)
7000 sym->st_value = 0;
7001 }
7002 doneone = TRUE;
7003 }
e1a9cb8e 7004
4a3dc543 7005 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 7006 {
7007 bfd_vma plt;
7008 unsigned char *p;
e1a9cb8e 7009
a6aa5195
AM		 7010 plt = (ent->plt.offset
7011 + htab->plt->output_section->vma
7012 + htab->plt->output_offset);
7013 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
e1a9cb8e 7014
a6aa5195
AM		 7015 if (info->shared || info->pie)
7016 {
7017 bfd_vma got = 0;
7018
7019 if (ent->addend >= 32768)
7020 got = (ent->addend
7021 + ent->sec->output_section->vma
7022 + ent->sec->output_offset);
7023 else if (htab->elf.hgot != NULL)
7024 got = (htab->elf.hgot->root.u.def.value
7025 + htab->elf.hgot->root.u.def.section->output_section->vma
7026 + htab->elf.hgot->root.u.def.section->output_offset);
7027
7028 plt -= got;
7029
7030 if (plt + 0x8000 < 0x10000)
7031 {
7032 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7033 p += 4;
7034 bfd_put_32 (output_bfd, MTCTR_11, p);
7035 p += 4;
7036 bfd_put_32 (output_bfd, BCTR, p);
7037 p += 4;
7038 bfd_put_32 (output_bfd, NOP, p);
7039 p += 4;
7040 }
7041 else
7042 {
7043 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7044 p += 4;
7045 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7046 p += 4;
7047 bfd_put_32 (output_bfd, MTCTR_11, p);
7048 p += 4;
7049 bfd_put_32 (output_bfd, BCTR, p);
7050 p += 4;
7051 }
7052 }
7053 else
7054 {
7055 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7056 p += 4;
7057 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7058 p += 4;
7059 bfd_put_32 (output_bfd, MTCTR_11, p);
7060 p += 4;
7061 bfd_put_32 (output_bfd, BCTR, p);
7062 p += 4;
28e99bb6
AM		 7063
7064 /* We only need one non-PIC glink stub. */
7065 break;
a6aa5195
AM		 7066 }
7067 }
7068 else
7069 break;
7070 }
e1a9cb8e 7071
25dbc73a
AM		 7072 if (h->needs_copy)
7073 {
7074 asection *s;
7075 Elf_Internal_Rela rela;
7076 bfd_byte *loc;
e1a9cb8e 7077
25dbc73a 7078 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 7079
25dbc73a
AM		 7080#ifdef DEBUG
7081 fprintf (stderr, ", copy");
7082#endif
e1a9cb8e 7083
25dbc73a 7084 BFD_ASSERT (h->dynindx != -1);
86bbe32f 7085
4dc4a9a5 7086 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 7087 s = htab->relsbss;
7088 else
7089 s = htab->relbss;
7090 BFD_ASSERT (s != NULL);
e1a9cb8e 7091
25dbc73a
AM		 7092 rela.r_offset = (h->root.u.def.value
7093 + h->root.u.def.section->output_section->vma
7094 + h->root.u.def.section->output_offset);
7095 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7096 rela.r_addend = 0;
7097 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7098 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7099 }
e1a9cb8e 7100
25dbc73a
AM		 7101#ifdef DEBUG
7102 fprintf (stderr, "\n");
7103#endif
e1a9cb8e 7104
25dbc73a 7105 /* Mark some specially defined symbols as absolute. */
9d8504b1
PB		 7106 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7107 || (!htab->is_vxworks
7108 && (h == htab->elf.hgot
7109 || strcmp (h->root.root.string,
7110 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
25dbc73a 7111 sym->st_shndx = SHN_ABS;
e1a9cb8e 7112
25dbc73a
AM		 7113 return TRUE;
7114}
7115\f
7116static enum elf_reloc_type_class
7117ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 7118{
25dbc73a
AM		 7119 switch (ELF32_R_TYPE (rela->r_info))
7120 {
7121 case R_PPC_RELATIVE:
7122 return reloc_class_relative;
7123 case R_PPC_REL24:
7124 case R_PPC_ADDR24:
7125 case R_PPC_JMP_SLOT:
7126 return reloc_class_plt;
7127 case R_PPC_COPY:
7128 return reloc_class_copy;
7129 default:
7130 return reloc_class_normal;
7131 }
e1a9cb8e 7132}
25dbc73a
AM		 7133\f
7134/* Finish up the dynamic sections. */
e1a9cb8e 7135
25dbc73a
AM		 7136static bfd_boolean
7137ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7138 struct bfd_link_info *info)
e1a9cb8e 7139{
25dbc73a 7140 asection *sdyn;
9d8504b1 7141 asection *splt;
25dbc73a 7142 struct ppc_elf_link_hash_table *htab;
1fe44d79 7143 bfd_vma got;
9d8504b1 7144 bfd * dynobj;
e1a9cb8e 7145
25dbc73a
AM		 7146#ifdef DEBUG
7147 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7148#endif
6b0817e5 7149
25dbc73a 7150 htab = ppc_elf_hash_table (info);
9d8504b1
PB		 7151 dynobj = elf_hash_table (info)->dynobj;
7152 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7153 if (htab->is_vxworks)
7154 splt = bfd_get_section_by_name (dynobj, ".plt");
7155 else
7156 splt = NULL;
e1a9cb8e 7157
1fe44d79
AM		 7158 got = 0;
7159 if (htab->elf.hgot != NULL)
7160 got = (htab->elf.hgot->root.u.def.value
7161 + htab->elf.hgot->root.u.def.section->output_section->vma
7162 + htab->elf.hgot->root.u.def.section->output_offset);
7163
25dbc73a 7164 if (htab->elf.dynamic_sections_created)
e1a9cb8e 7165 {
25dbc73a 7166 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 7167
25dbc73a 7168 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 7169
25dbc73a
AM		 7170 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7171 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7172 for (; dyncon < dynconend; dyncon++)
7173 {
7174 Elf_Internal_Dyn dyn;
7175 asection *s;
e1a9cb8e 7176
9d8504b1 7177 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 7178
25dbc73a
AM		 7179 switch (dyn.d_tag)
7180 {
7181 case DT_PLTGOT:
9d8504b1
PB		 7182 if (htab->is_vxworks)
7183 s = htab->sgotplt;
7184 else
7185 s = htab->plt;
25dbc73a
AM		 7186 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7187 break;
86bbe32f 7188
25dbc73a
AM		 7189 case DT_PLTRELSZ:
7190 dyn.d_un.d_val = htab->relplt->size;
7191 break;
e1a9cb8e 7192
25dbc73a
AM		 7193 case DT_JMPREL:
7194 s = htab->relplt;
7195 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7196 break;
2f89ff8d 7197
1fe44d79
AM		 7198 case DT_PPC_GOT:
7199 dyn.d_un.d_ptr = got;
d7128ce4
AM		 7200 break;
7201
9d8504b1
PB		 7202 case DT_RELASZ:
7203 if (htab->is_vxworks)
7204 {
7205 if (htab->relplt)
7206 dyn.d_un.d_ptr -= htab->relplt->size;
7207 break;
7208 }
7209 continue;
7210
25dbc73a
AM		 7211 default:
7212 continue;
7213 }
4c45e5c9 7214
25dbc73a
AM		 7215 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7216 }
7217 }
4c45e5c9 7218
25dbc73a
AM		 7219 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7220 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
3b36f7e6 7221 if (htab->got != NULL)
25dbc73a 7222 {
3b36f7e6
AM		 7223 unsigned char *p = htab->got->contents;
7224 bfd_vma val;
2f89ff8d 7225
636ce3f5 7226 p += htab->elf.hgot->root.u.def.value;
4a3dc543 7227 if (htab->plt_type == PLT_OLD)
d7128ce4 7228 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
3b36f7e6
AM		 7229
7230 val = 0;
7231 if (sdyn != NULL)
7232 val = sdyn->output_section->vma + sdyn->output_offset;
7233 bfd_put_32 (output_bfd, val, p);
25dbc73a
AM		 7234
7235 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7236 }
7237
9d8504b1
PB		 7238 /* Fill in the first entry in the VxWorks procedure linkage table. */
7239 if (splt && splt->size > 0)
7240 {
7241 /* Use the right PLT. */
7242 static const bfd_vma *plt_entry = NULL;
7243 plt_entry = info->shared ?
7244 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7245
7246 if (!info->shared)
7247 {
7248 bfd_vma got_value =
636ce3f5
AM		 7249 (htab->elf.hgot->root.u.def.section->output_section->vma
7250 + htab->elf.hgot->root.u.def.section->output_offset
7251 + htab->elf.hgot->root.u.def.value);
9d8504b1
PB		 7252 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7253
7254 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7255 splt->contents + 0);
7256 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7257 splt->contents + 4);
7258 }
7259 else
7260 {
7261 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7262 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7263 }
7264 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7265 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7266 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7267 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7268 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7269 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7270
7271 if (! info->shared)
7272 {
7273 Elf_Internal_Rela rela;
7274 bfd_byte *loc;
7275
7276 loc = htab->srelplt2->contents;
7277
7278 /* Output the @ha relocation for the first instruction. */
7279 rela.r_offset = (htab->plt->output_section->vma
7280 + htab->plt->output_offset
7281 + 2);
636ce3f5 7282 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB		 7283 rela.r_addend = 0;
7284 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7285 loc += sizeof (Elf32_External_Rela);
7286
7287 /* Output the @l relocation for the second instruction. */
7288 rela.r_offset = (htab->plt->output_section->vma
7289 + htab->plt->output_offset
7290 + 6);
636ce3f5 7291 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB		 7292 rela.r_addend = 0;
7293 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7294 loc += sizeof (Elf32_External_Rela);
7295
7296 /* Fix up the remaining relocations. They may have the wrong
7297 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7298 in which symbols were output. */
7299 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7300 {
7301 Elf_Internal_Rela rel;
7302
7303 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 7304 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB		 7305 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7306 loc += sizeof (Elf32_External_Rela);
7307
7308 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 7309 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB		 7310 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7311 loc += sizeof (Elf32_External_Rela);
7312
7313 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 7314 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB		 7315 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7316 loc += sizeof (Elf32_External_Rela);
7317 }
7318 }
7319 }
7320
d7128ce4
AM		 7321 if (htab->glink != NULL && htab->glink->contents != NULL)
7322 {
7323 unsigned char *p;
7324 unsigned char *endp;
a6aa5195 7325 bfd_vma res0;
d7128ce4 7326 unsigned int i;
a6aa5195
AM		 7327
7328 /*
7329 * PIC glink code is the following:
7330 *
7331 * # ith PLT code stub.
7332 * addis 11,30,(plt+(i-1)*4-got)@ha
7333 * lwz 11,(plt+(i-1)*4-got)@l(11)
7334 * mtctr 11
7335 * bctr
7336 *
7337 * # A table of branches, one for each plt entry.
7338 * # The idea is that the plt call stub loads ctr (and r11) with these
7339 * # addresses, so (r11 - res_0) gives the plt index * 4.
7340 * res_0: b PLTresolve
7341 * res_1: b PLTresolve
7342 * .
7343 * # Some number of entries towards the end can be nops
7344 * res_n_m3: nop
7345 * res_n_m2: nop
7346 * res_n_m1:
7347 *
7348 * PLTresolve:
7349 * addis 11,11,(1f-res_0)@ha
7350 * mflr 0
7351 * bcl 20,31,1f
7352 * 1: addi 11,11,(1b-res_0)@l
7353 * mflr 12
7354 * mtlr 0
7355 * sub 11,11,12 # r11 = index * 4
7356 * addis 12,12,(got+4-1b)@ha
7357 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7358 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7359 * mtctr 0
7360 * add 0,11,11
7361 * add 11,0,11 # r11 = index * 12 = reloc offset.
7362 * bctr
7363 */
7364 static const unsigned int pic_plt_resolve[] =
7365 {
7366 ADDIS_11_11,
7367 MFLR_0,
7368 BCL_20_31,
7369 ADDI_11_11,
7370 MFLR_12,
7371 MTLR_0,
7372 SUB_11_11_12,
7373 ADDIS_12_12,
7374 LWZ_0_12,
7375 LWZ_12_12,
7376 MTCTR_0,
7377 ADD_0_11_11,
7378 ADD_11_0_11,
7379 BCTR,
7380 NOP,
7381 NOP
7382 };
7383
d7128ce4
AM		 7384 static const unsigned int plt_resolve[] =
7385 {
a6aa5195
AM		 7386 LIS_12,
7387 ADDIS_11_11,
7388 LWZ_0_12,
7389 ADDI_11_11,
d7128ce4 7390 MTCTR_0,
7e8aeb9a 7391 ADD_0_11_11,
a6aa5195 7392 LWZ_12_12,
7e8aeb9a 7393 ADD_11_0_11,
d7128ce4
AM		 7394 BCTR,
7395 NOP,
7396 NOP,
a6aa5195
AM		 7397 NOP,
7398 NOP,
7399 NOP,
7400 NOP,
d7128ce4
AM		 7401 NOP
7402 };
7403
a6aa5195
AM		 7404 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7405 abort ();
7406 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM		 7407 abort ();
7408
a6aa5195 7409 /* Build the branch table, one for each plt entry (less one),
86b9da88 7410 and perhaps some padding. */
a6aa5195
AM		 7411 p = htab->glink->contents;
7412 p += htab->glink_pltresolve;
86b9da88
AM		 7413 endp = htab->glink->contents;
7414 endp += htab->glink->size - GLINK_PLTRESOLVE;
7415 while (p < endp - 8 * 4)
7416 {
7417 bfd_put_32 (output_bfd, B + endp - p, p);
7418 p += 4;
7419 }
7420 while (p < endp)
7421 {
7422 bfd_put_32 (output_bfd, NOP, p);
7423 p += 4;
7424 }
7425
7e8aeb9a 7426 res0 = (htab->glink_pltresolve
86b9da88
AM		 7427 + htab->glink->output_section->vma
7428 + htab->glink->output_offset);
7429
7430 /* Last comes the PLTresolve stub. */
7e8aeb9a
AM		 7431 if (info->shared || info->pie)
7432 {
a6aa5195 7433 bfd_vma bcl;
d7128ce4 7434
a6aa5195 7435 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 7436 {
a6aa5195 7437 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7e8aeb9a
AM		 7438 p += 4;
7439 }
a6aa5195
AM		 7440 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7441
7442 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7443 + htab->glink->output_section->vma
7444 + htab->glink->output_offset);
7445
7446 bfd_put_32 (output_bfd,
7447 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7448 bfd_put_32 (output_bfd,
7449 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7450 bfd_put_32 (output_bfd,
7451 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7452 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7453 {
7454 bfd_put_32 (output_bfd,
7455 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7456 bfd_put_32 (output_bfd,
7457 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7458 }
7459 else
7460 {
7461 bfd_put_32 (output_bfd,
7462 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7463 bfd_put_32 (output_bfd,
7464 LWZ_12_12 + 4, p + 9*4);
7465 }
7e8aeb9a
AM		 7466 }
7467 else
d7128ce4 7468 {
a6aa5195 7469 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a
AM		 7470 {
7471 bfd_put_32 (output_bfd, plt_resolve[i], p);
7472 p += 4;
7473 }
a6aa5195
AM		 7474 p -= 4 * ARRAY_SIZE (plt_resolve);
7475
7476 bfd_put_32 (output_bfd,
7477 LIS_12 + PPC_HA (got + 4), p + 0*4);
7478 bfd_put_32 (output_bfd,
7479 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
7480 bfd_put_32 (output_bfd,
7481 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
7482 if (PPC_HA (got + 4) == PPC_HA (got + 8))
7483 {
7484 bfd_put_32 (output_bfd,
7485 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
7486 bfd_put_32 (output_bfd,
7487 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
7488 }
7489 else
7490 {
7491 bfd_put_32 (output_bfd,
7492 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
7493 bfd_put_32 (output_bfd,
7494 LWZ_12_12 + 4, p + 6*4);
7495 }
d7128ce4 7496 }
d7128ce4
AM		 7497 }
7498
25dbc73a
AM		 7499 return TRUE;
7500}
e1a9cb8e 7501\f
252b5132
RH		 7502#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7503#define TARGET_LITTLE_NAME "elf32-powerpcle"
7504#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7505#define TARGET_BIG_NAME "elf32-powerpc"
7506#define ELF_ARCH bfd_arch_powerpc
7507#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC		 7508#ifdef __QNXTARGET__
7509#define ELF_MAXPAGESIZE 0x1000
7510#else
252b5132 7511#define ELF_MAXPAGESIZE 0x10000
d0facd1b 7512#endif
b1342370 7513#define ELF_MINPAGESIZE 0x1000
24718e3b 7514#define ELF_COMMONPAGESIZE 0x1000
252b5132
RH		 7515#define elf_info_to_howto ppc_elf_info_to_howto
7516
7517#ifdef EM_CYGNUS_POWERPC
7518#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7519#endif
7520
7521#ifdef EM_PPC_OLD
7522#define ELF_MACHINE_ALT2 EM_PPC_OLD
7523#endif
7524
7525#define elf_backend_plt_not_loaded 1
252b5132 7526#define elf_backend_can_gc_sections 1
51b64d56 7527#define elf_backend_can_refcount 1
b491616a 7528#define elf_backend_rela_normal 1
252b5132 7529
43c40ab2 7530#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 7531#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 7532#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 7533#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
157090f7 7534#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 7535#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 7536#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
252b5132 7537
feee612b 7538#define elf_backend_object_p ppc_elf_object_p
252b5132
RH		 7539#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7540#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7541#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7542#define elf_backend_relocate_section ppc_elf_relocate_section
7543#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7544#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 7545#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH		 7546#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7547#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7548#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7549#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7550#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7551#define elf_backend_fake_sections ppc_elf_fake_sections
7552#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
c5fccbec
DJ		 7553#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7554#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 7555#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 7556#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM		 7557#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7558#define elf_backend_final_write_processing ppc_elf_final_write_processing
7559#define elf_backend_write_section ppc_elf_write_section
551b43fd 7560#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 7561#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 7562#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 7563#define elf_backend_init_index_section _bfd_elf_init_1_index_section
252b5132
RH		 7564
7565#include "elf32-target.h"
9d8504b1
PB		 7566
7567/* VxWorks Target */
7568
7569#undef TARGET_LITTLE_SYM
7570#undef TARGET_LITTLE_NAME
7571
7572#undef TARGET_BIG_SYM
7573#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7574#undef TARGET_BIG_NAME
7575#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7576
d5e3d971
PB		 7577/* VxWorks uses the elf default section flags for .plt. */
7578static const struct bfd_elf_special_section *
7579ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 7580{
d5e3d971
PB		 7581 if (sec->name == NULL)
7582 return NULL;
7583
7584 if (strcmp (sec->name, ".plt") == 0)
7585 return _bfd_elf_get_sec_type_attr (abfd, sec);
7586
7587 return ppc_elf_get_sec_type_attr (abfd, sec);
7588}
9d8504b1
PB		 7589
7590/* Like ppc_elf_link_hash_table_create, but overrides
7591 appropriately for VxWorks. */
7592static struct bfd_link_hash_table *
7593ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
7594{
7595 struct bfd_link_hash_table *ret;
7596
7597 ret = ppc_elf_link_hash_table_create (abfd);
7598 if (ret)
7599 {
7600 struct ppc_elf_link_hash_table *htab
7601 = (struct ppc_elf_link_hash_table *)ret;
7602 htab->is_vxworks = 1;
4a3dc543 7603 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB		 7604 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
7605 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
7606 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
7607 }
7608 return ret;
7609}
7610
7611/* Tweak magic VxWorks symbols as they are loaded. */
7612static bfd_boolean
7613ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
7614 struct bfd_link_info *info,
7615 Elf_Internal_Sym *sym,
7616 const char **namep ATTRIBUTE_UNUSED,
7617 flagword *flagsp ATTRIBUTE_UNUSED,
7618 asection **secp,
7619 bfd_vma *valp)
7620{
7621 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
7622 valp))
7623 return FALSE;
7624
7625 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
7626}
7627
9d8504b1
PB		 7628static void
7629ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
7630{
7631 ppc_elf_final_write_processing(abfd, linker);
7632 elf_vxworks_final_write_processing(abfd, linker);
7633}
7634
7635/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7636 define it. */
7637#undef elf_backend_want_plt_sym
7638#define elf_backend_want_plt_sym 1
7639#undef elf_backend_want_got_plt
7640#define elf_backend_want_got_plt 1
7641#undef elf_backend_got_symbol_offset
7642#define elf_backend_got_symbol_offset 0
7643#undef elf_backend_plt_not_loaded
7644#define elf_backend_plt_not_loaded 0
7645#undef elf_backend_plt_readonly
7646#define elf_backend_plt_readonly 1
7647#undef elf_backend_got_header_size
7648#define elf_backend_got_header_size 12
7649
7650#undef bfd_elf32_bfd_link_hash_table_create
7651#define bfd_elf32_bfd_link_hash_table_create \
7652 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB		 7653#undef elf_backend_add_symbol_hook
7654#define elf_backend_add_symbol_hook \
7655 ppc_elf_vxworks_add_symbol_hook
7656#undef elf_backend_link_output_symbol_hook
7657#define elf_backend_link_output_symbol_hook \
9c72ff84 7658 elf_vxworks_link_output_symbol_hook
9d8504b1
PB		 7659#undef elf_backend_final_write_processing
7660#define elf_backend_final_write_processing \
7661 ppc_elf_vxworks_final_write_processing
d5e3d971
PB		 7662#undef elf_backend_get_sec_type_attr
7663#define elf_backend_get_sec_type_attr \
7664 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB		 7665#undef elf_backend_emit_relocs
7666#define elf_backend_emit_relocs \
7667 elf_vxworks_emit_relocs
7668
7669#undef elf32_bed
7670#define elf32_bed ppc_elf_vxworks_bed
7671
7672#include "elf32-target.h"
GDB Binutils - Deliverables
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