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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,
0ffa91dd 3 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
252b5132
RH		 4 Written by Ian Lance Taylor, Cygnus Support.
5
ae9a127f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
ae9a127f
NC		 8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
ae9a127f 11 (at your option) any later version.
252b5132 12
ae9a127f
NC		 13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
ae9a127f 18 You should have received a copy of the GNU General Public License
fc0bffd6 19 along with this program; if not, write to the
3e110533 20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
53e09e0a 21 Boston, MA 02110-1301, USA. */
252b5132 22
cd123cb7 23
252b5132
RH		 24/* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
28
3db64b00 29#include "sysdep.h"
183e98be 30#include <stdarg.h>
252b5132 31#include "bfd.h"
252b5132
RH		 32#include "bfdlink.h"
33#include "libbfd.h"
34#include "elf-bfd.h"
35#include "elf/ppc.h"
7619e7c7 36#include "elf32-ppc.h"
9d8504b1 37#include "elf-vxworks.h"
252b5132 38
f0fe0e16 39/* RELA relocations are used here. */
252b5132 40
252b5132 41static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 43static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 45
70bccea4
AM		 46/* Branch prediction bit for branch taken relocs. */
47#define BRANCH_PREDICT_BIT 0x200000
48/* Mask to set RA in memory instructions. */
49#define RA_REGISTER_MASK 0x001f0000
50/* Value to shift register by to insert RA. */
51#define RA_REGISTER_SHIFT 16
252b5132
RH		 52
53/* The name of the dynamic interpreter. This is put in the .interp
54 section. */
252b5132
RH		 55#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
56
d7128ce4 57/* For old-style PLT. */
252b5132
RH		 58/* The number of single-slot PLT entries (the rest use two slots). */
59#define PLT_NUM_SINGLE_ENTRIES 8192
60
d7128ce4 61/* For new-style .glink and .plt. */
a6aa5195 62#define GLINK_PLTRESOLVE 16*4
d7128ce4
AM		 63#define GLINK_ENTRY_SIZE 4*4
64
9d8504b1
PB		 65/* VxWorks uses its own plt layout, filled in by the static linker. */
66
67/* The standard VxWorks PLT entry. */
68#define VXWORKS_PLT_ENTRY_SIZE 32
69static const bfd_vma ppc_elf_vxworks_plt_entry
70 [VXWORKS_PLT_ENTRY_SIZE / 4] =
71 {
72 0x3d800000, /* lis r12,0 */
73 0x818c0000, /* lwz r12,0(r12) */
74 0x7d8903a6, /* mtctr r12 */
75 0x4e800420, /* bctr */
76 0x39600000, /* li r11,0 */
77 0x48000000, /* b 14 <.PLT0resolve+0x4> */
78 0x60000000, /* nop */
79 0x60000000, /* nop */
80 };
81static const bfd_vma ppc_elf_vxworks_pic_plt_entry
82 [VXWORKS_PLT_ENTRY_SIZE / 4] =
83 {
84 0x3d9e0000, /* addis r12,r30,0 */
85 0x818c0000, /* lwz r12,0(r12) */
86 0x7d8903a6, /* mtctr r12 */
87 0x4e800420, /* bctr */
88 0x39600000, /* li r11,0 */
89 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
90 0x60000000, /* nop */
91 0x60000000, /* nop */
92 };
93
94/* The initial VxWorks PLT entry. */
95#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
96static const bfd_vma ppc_elf_vxworks_plt0_entry
97 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
98 {
99 0x3d800000, /* lis r12,0 */
100 0x398c0000, /* addi r12,r12,0 */
101 0x800c0008, /* lwz r0,8(r12) */
102 0x7c0903a6, /* mtctr r0 */
103 0x818c0004, /* lwz r12,4(r12) */
104 0x4e800420, /* bctr */
105 0x60000000, /* nop */
106 0x60000000, /* nop */
107 };
108static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
109 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
110 {
111 0x819e0008, /* lwz r12,8(r30) */
112 0x7d8903a6, /* mtctr r12 */
113 0x819e0004, /* lwz r12,4(r30) */
114 0x4e800420, /* bctr */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
119 };
120
121/* For executables, we have some additional relocations in
122 .rela.plt.unloaded, for the kernel loader. */
123
124/* The number of non-JMP_SLOT relocations per PLT0 slot. */
125#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
126/* The number of relocations in the PLTResolve slot. */
127#define VXWORKS_PLTRESOLVE_RELOCS 2
128/* The number of relocations in the PLTResolve slot when when creating
129 a shared library. */
130#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
131
d7128ce4 132/* Some instructions. */
d7128ce4 133#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM		 134#define ADDIS_11_30 0x3d7e0000
135#define ADDIS_12_12 0x3d8c0000
d7128ce4 136#define ADDI_11_11 0x396b0000
d7128ce4
AM		 137#define ADD_0_11_11 0x7c0b5a14
138#define ADD_11_0_11 0x7d605a14
a6aa5195
AM		 139#define B 0x48000000
140#define BCL_20_31 0x429f0005
d7128ce4 141#define BCTR 0x4e800420
7e8aeb9a
AM		 142#define LIS_11 0x3d600000
143#define LIS_12 0x3d800000
a6aa5195
AM		 144#define LWZU_0_12 0x840c0000
145#define LWZ_0_12 0x800c0000
146#define LWZ_11_11 0x816b0000
147#define LWZ_11_30 0x817e0000
148#define LWZ_12_12 0x818c0000
149#define MFLR_0 0x7c0802a6
150#define MFLR_12 0x7d8802a6
151#define MTCTR_0 0x7c0903a6
152#define MTCTR_11 0x7d6903a6
153#define MTLR_0 0x7c0803a6
154#define NOP 0x60000000
155#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM		 156
157/* Offset of tp and dtp pointers from start of TLS block. */
158#define TP_OFFSET 0x7000
159#define DTP_OFFSET 0x8000
7fce784e 160\f
e47cd125 161static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 162
8da6118f 163static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH		 164 /* This reloc does nothing. */
165 HOWTO (R_PPC_NONE, /* type */
166 0, /* rightshift */
167 2, /* size (0 = byte, 1 = short, 2 = long) */
168 32, /* bitsize */
b34976b6 169 FALSE, /* pc_relative */
252b5132
RH		 170 0, /* bitpos */
171 complain_overflow_bitfield, /* complain_on_overflow */
172 bfd_elf_generic_reloc, /* special_function */
173 "R_PPC_NONE", /* name */
b34976b6 174 FALSE, /* partial_inplace */
252b5132
RH		 175 0, /* src_mask */
176 0, /* dst_mask */
b34976b6 177 FALSE), /* pcrel_offset */
252b5132
RH		 178
179 /* A standard 32 bit relocation. */
180 HOWTO (R_PPC_ADDR32, /* type */
181 0, /* rightshift */
182 2, /* size (0 = byte, 1 = short, 2 = long) */
183 32, /* bitsize */
b34976b6 184 FALSE, /* pc_relative */
252b5132
RH		 185 0, /* bitpos */
186 complain_overflow_bitfield, /* complain_on_overflow */
187 bfd_elf_generic_reloc, /* special_function */
188 "R_PPC_ADDR32", /* name */
b34976b6 189 FALSE, /* partial_inplace */
252b5132
RH		 190 0, /* src_mask */
191 0xffffffff, /* dst_mask */
b34976b6 192 FALSE), /* pcrel_offset */
252b5132
RH		 193
194 /* An absolute 26 bit branch; the lower two bits must be zero.
195 FIXME: we don't check that, we just clear them. */
196 HOWTO (R_PPC_ADDR24, /* type */
197 0, /* rightshift */
198 2, /* size (0 = byte, 1 = short, 2 = long) */
199 26, /* bitsize */
b34976b6 200 FALSE, /* pc_relative */
252b5132
RH		 201 0, /* bitpos */
202 complain_overflow_bitfield, /* complain_on_overflow */
203 bfd_elf_generic_reloc, /* special_function */
204 "R_PPC_ADDR24", /* name */
b34976b6 205 FALSE, /* partial_inplace */
252b5132
RH		 206 0, /* src_mask */
207 0x3fffffc, /* dst_mask */
b34976b6 208 FALSE), /* pcrel_offset */
252b5132
RH		 209
210 /* A standard 16 bit relocation. */
211 HOWTO (R_PPC_ADDR16, /* type */
212 0, /* rightshift */
213 1, /* size (0 = byte, 1 = short, 2 = long) */
214 16, /* bitsize */
b34976b6 215 FALSE, /* pc_relative */
252b5132
RH		 216 0, /* bitpos */
217 complain_overflow_bitfield, /* complain_on_overflow */
218 bfd_elf_generic_reloc, /* special_function */
219 "R_PPC_ADDR16", /* name */
b34976b6 220 FALSE, /* partial_inplace */
252b5132
RH		 221 0, /* src_mask */
222 0xffff, /* dst_mask */
b34976b6 223 FALSE), /* pcrel_offset */
252b5132
RH		 224
225 /* A 16 bit relocation without overflow. */
226 HOWTO (R_PPC_ADDR16_LO, /* type */
227 0, /* rightshift */
228 1, /* size (0 = byte, 1 = short, 2 = long) */
229 16, /* bitsize */
b34976b6 230 FALSE, /* pc_relative */
252b5132
RH		 231 0, /* bitpos */
232 complain_overflow_dont,/* complain_on_overflow */
233 bfd_elf_generic_reloc, /* special_function */
234 "R_PPC_ADDR16_LO", /* name */
b34976b6 235 FALSE, /* partial_inplace */
252b5132
RH		 236 0, /* src_mask */
237 0xffff, /* dst_mask */
b34976b6 238 FALSE), /* pcrel_offset */
252b5132
RH		 239
240 /* The high order 16 bits of an address. */
241 HOWTO (R_PPC_ADDR16_HI, /* type */
242 16, /* rightshift */
243 1, /* size (0 = byte, 1 = short, 2 = long) */
244 16, /* bitsize */
b34976b6 245 FALSE, /* pc_relative */
252b5132
RH		 246 0, /* bitpos */
247 complain_overflow_dont, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_PPC_ADDR16_HI", /* name */
b34976b6 250 FALSE, /* partial_inplace */
252b5132
RH		 251 0, /* src_mask */
252 0xffff, /* dst_mask */
b34976b6 253 FALSE), /* pcrel_offset */
252b5132
RH		 254
255 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 256 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH		 257 HOWTO (R_PPC_ADDR16_HA, /* type */
258 16, /* rightshift */
259 1, /* size (0 = byte, 1 = short, 2 = long) */
260 16, /* bitsize */
b34976b6 261 FALSE, /* pc_relative */
252b5132
RH		 262 0, /* bitpos */
263 complain_overflow_dont, /* complain_on_overflow */
264 ppc_elf_addr16_ha_reloc, /* special_function */
265 "R_PPC_ADDR16_HA", /* name */
b34976b6 266 FALSE, /* partial_inplace */
252b5132
RH		 267 0, /* src_mask */
268 0xffff, /* dst_mask */
b34976b6 269 FALSE), /* pcrel_offset */
252b5132
RH		 270
271 /* An absolute 16 bit branch; the lower two bits must be zero.
272 FIXME: we don't check that, we just clear them. */
273 HOWTO (R_PPC_ADDR14, /* type */
274 0, /* rightshift */
275 2, /* size (0 = byte, 1 = short, 2 = long) */
276 16, /* bitsize */
b34976b6 277 FALSE, /* pc_relative */
252b5132
RH		 278 0, /* bitpos */
279 complain_overflow_bitfield, /* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_PPC_ADDR14", /* name */
b34976b6 282 FALSE, /* partial_inplace */
252b5132
RH		 283 0, /* src_mask */
284 0xfffc, /* dst_mask */
b34976b6 285 FALSE), /* pcrel_offset */
252b5132
RH		 286
287 /* An absolute 16 bit branch, for which bit 10 should be set to
288 indicate that the branch is expected to be taken. The lower two
8da6118f 289 bits must be zero. */
252b5132
RH		 290 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
291 0, /* rightshift */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
293 16, /* bitsize */
b34976b6 294 FALSE, /* pc_relative */
252b5132
RH		 295 0, /* bitpos */
296 complain_overflow_bitfield, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 299 FALSE, /* partial_inplace */
252b5132
RH		 300 0, /* src_mask */
301 0xfffc, /* dst_mask */
b34976b6 302 FALSE), /* pcrel_offset */
252b5132
RH		 303
304 /* An absolute 16 bit branch, for which bit 10 should be set to
305 indicate that the branch is not expected to be taken. The lower
306 two bits must be zero. */
307 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
308 0, /* rightshift */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
310 16, /* bitsize */
b34976b6 311 FALSE, /* pc_relative */
252b5132
RH		 312 0, /* bitpos */
313 complain_overflow_bitfield, /* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 316 FALSE, /* partial_inplace */
252b5132
RH		 317 0, /* src_mask */
318 0xfffc, /* dst_mask */
b34976b6 319 FALSE), /* pcrel_offset */
252b5132 320
8da6118f 321 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH		 322 HOWTO (R_PPC_REL24, /* type */
323 0, /* rightshift */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
325 26, /* bitsize */
b34976b6 326 TRUE, /* pc_relative */
252b5132
RH		 327 0, /* bitpos */
328 complain_overflow_signed, /* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_PPC_REL24", /* name */
b34976b6 331 FALSE, /* partial_inplace */
252b5132
RH		 332 0, /* src_mask */
333 0x3fffffc, /* dst_mask */
b34976b6 334 TRUE), /* pcrel_offset */
252b5132 335
8da6118f 336 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH		 337 HOWTO (R_PPC_REL14, /* type */
338 0, /* rightshift */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
340 16, /* bitsize */
b34976b6 341 TRUE, /* pc_relative */
252b5132
RH		 342 0, /* bitpos */
343 complain_overflow_signed, /* complain_on_overflow */
344 bfd_elf_generic_reloc, /* special_function */
345 "R_PPC_REL14", /* name */
b34976b6 346 FALSE, /* partial_inplace */
252b5132
RH		 347 0, /* src_mask */
348 0xfffc, /* dst_mask */
b34976b6 349 TRUE), /* pcrel_offset */
252b5132 350
8da6118f 351 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH		 352 the branch is expected to be taken. The lower two bits must be
353 zero. */
354 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
355 0, /* rightshift */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
357 16, /* bitsize */
b34976b6 358 TRUE, /* pc_relative */
252b5132
RH		 359 0, /* bitpos */
360 complain_overflow_signed, /* complain_on_overflow */
361 bfd_elf_generic_reloc, /* special_function */
362 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 363 FALSE, /* partial_inplace */
252b5132
RH		 364 0, /* src_mask */
365 0xfffc, /* dst_mask */
b34976b6 366 TRUE), /* pcrel_offset */
252b5132 367
8da6118f 368 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH		 369 the branch is not expected to be taken. The lower two bits must
370 be zero. */
371 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
372 0, /* rightshift */
373 2, /* size (0 = byte, 1 = short, 2 = long) */
374 16, /* bitsize */
b34976b6 375 TRUE, /* pc_relative */
252b5132
RH		 376 0, /* bitpos */
377 complain_overflow_signed, /* complain_on_overflow */
378 bfd_elf_generic_reloc, /* special_function */
379 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 380 FALSE, /* partial_inplace */
252b5132
RH		 381 0, /* src_mask */
382 0xfffc, /* dst_mask */
b34976b6 383 TRUE), /* pcrel_offset */
252b5132
RH		 384
385 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
386 symbol. */
387 HOWTO (R_PPC_GOT16, /* type */
388 0, /* rightshift */
389 1, /* size (0 = byte, 1 = short, 2 = long) */
390 16, /* bitsize */
b34976b6 391 FALSE, /* pc_relative */
252b5132
RH		 392 0, /* bitpos */
393 complain_overflow_signed, /* complain_on_overflow */
394 bfd_elf_generic_reloc, /* special_function */
395 "R_PPC_GOT16", /* name */
b34976b6 396 FALSE, /* partial_inplace */
252b5132
RH		 397 0, /* src_mask */
398 0xffff, /* dst_mask */
b34976b6 399 FALSE), /* pcrel_offset */
252b5132
RH		 400
401 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
402 the symbol. */
403 HOWTO (R_PPC_GOT16_LO, /* type */
404 0, /* rightshift */
405 1, /* size (0 = byte, 1 = short, 2 = long) */
406 16, /* bitsize */
b34976b6 407 FALSE, /* pc_relative */
252b5132
RH		 408 0, /* bitpos */
409 complain_overflow_dont, /* complain_on_overflow */
410 bfd_elf_generic_reloc, /* special_function */
411 "R_PPC_GOT16_LO", /* name */
b34976b6 412 FALSE, /* partial_inplace */
252b5132
RH		 413 0, /* src_mask */
414 0xffff, /* dst_mask */
b34976b6 415 FALSE), /* pcrel_offset */
252b5132
RH		 416
417 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
418 the symbol. */
419 HOWTO (R_PPC_GOT16_HI, /* type */
420 16, /* rightshift */
421 1, /* size (0 = byte, 1 = short, 2 = long) */
422 16, /* bitsize */
b34976b6 423 FALSE, /* pc_relative */
252b5132
RH		 424 0, /* bitpos */
425 complain_overflow_bitfield, /* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
427 "R_PPC_GOT16_HI", /* name */
b34976b6 428 FALSE, /* partial_inplace */
252b5132
RH		 429 0, /* src_mask */
430 0xffff, /* dst_mask */
b34976b6 431 FALSE), /* pcrel_offset */
252b5132
RH		 432
433 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
434 the symbol. */
435 HOWTO (R_PPC_GOT16_HA, /* type */
436 16, /* rightshift */
437 1, /* size (0 = byte, 1 = short, 2 = long) */
438 16, /* bitsize */
b34976b6 439 FALSE, /* pc_relative */
252b5132
RH		 440 0, /* bitpos */
441 complain_overflow_bitfield, /* complain_on_overflow */
442 ppc_elf_addr16_ha_reloc, /* special_function */
443 "R_PPC_GOT16_HA", /* name */
b34976b6 444 FALSE, /* partial_inplace */
252b5132
RH		 445 0, /* src_mask */
446 0xffff, /* dst_mask */
b34976b6 447 FALSE), /* pcrel_offset */
252b5132
RH		 448
449 /* Like R_PPC_REL24, but referring to the procedure linkage table
450 entry for the symbol. */
451 HOWTO (R_PPC_PLTREL24, /* type */
452 0, /* rightshift */
453 2, /* size (0 = byte, 1 = short, 2 = long) */
454 26, /* bitsize */
b34976b6 455 TRUE, /* pc_relative */
252b5132
RH		 456 0, /* bitpos */
457 complain_overflow_signed, /* complain_on_overflow */
458 bfd_elf_generic_reloc, /* special_function */
459 "R_PPC_PLTREL24", /* name */
b34976b6 460 FALSE, /* partial_inplace */
252b5132
RH		 461 0, /* src_mask */
462 0x3fffffc, /* dst_mask */
b34976b6 463 TRUE), /* pcrel_offset */
252b5132
RH		 464
465 /* This is used only by the dynamic linker. The symbol should exist
466 both in the object being run and in some shared library. The
467 dynamic linker copies the data addressed by the symbol from the
468 shared library into the object, because the object being
469 run has to have the data at some particular address. */
470 HOWTO (R_PPC_COPY, /* type */
471 0, /* rightshift */
472 2, /* size (0 = byte, 1 = short, 2 = long) */
473 32, /* bitsize */
b34976b6 474 FALSE, /* pc_relative */
252b5132
RH		 475 0, /* bitpos */
476 complain_overflow_bitfield, /* complain_on_overflow */
477 bfd_elf_generic_reloc, /* special_function */
478 "R_PPC_COPY", /* name */
b34976b6 479 FALSE, /* partial_inplace */
252b5132
RH		 480 0, /* src_mask */
481 0, /* dst_mask */
b34976b6 482 FALSE), /* pcrel_offset */
252b5132
RH		 483
484 /* Like R_PPC_ADDR32, but used when setting global offset table
485 entries. */
486 HOWTO (R_PPC_GLOB_DAT, /* type */
487 0, /* rightshift */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
489 32, /* bitsize */
b34976b6 490 FALSE, /* pc_relative */
252b5132
RH		 491 0, /* bitpos */
492 complain_overflow_bitfield, /* complain_on_overflow */
493 bfd_elf_generic_reloc, /* special_function */
494 "R_PPC_GLOB_DAT", /* name */
b34976b6 495 FALSE, /* partial_inplace */
252b5132
RH		 496 0, /* src_mask */
497 0xffffffff, /* dst_mask */
b34976b6 498 FALSE), /* pcrel_offset */
252b5132
RH		 499
500 /* Marks a procedure linkage table entry for a symbol. */
501 HOWTO (R_PPC_JMP_SLOT, /* type */
502 0, /* rightshift */
503 2, /* size (0 = byte, 1 = short, 2 = long) */
504 32, /* bitsize */
b34976b6 505 FALSE, /* pc_relative */
252b5132
RH		 506 0, /* bitpos */
507 complain_overflow_bitfield, /* complain_on_overflow */
508 bfd_elf_generic_reloc, /* special_function */
509 "R_PPC_JMP_SLOT", /* name */
b34976b6 510 FALSE, /* partial_inplace */
252b5132
RH		 511 0, /* src_mask */
512 0, /* dst_mask */
b34976b6 513 FALSE), /* pcrel_offset */
252b5132
RH		 514
515 /* Used only by the dynamic linker. When the object is run, this
516 longword is set to the load address of the object, plus the
517 addend. */
518 HOWTO (R_PPC_RELATIVE, /* type */
519 0, /* rightshift */
520 2, /* size (0 = byte, 1 = short, 2 = long) */
521 32, /* bitsize */
b34976b6 522 FALSE, /* pc_relative */
252b5132
RH		 523 0, /* bitpos */
524 complain_overflow_bitfield, /* complain_on_overflow */
525 bfd_elf_generic_reloc, /* special_function */
526 "R_PPC_RELATIVE", /* name */
b34976b6 527 FALSE, /* partial_inplace */
252b5132
RH		 528 0, /* src_mask */
529 0xffffffff, /* dst_mask */
b34976b6 530 FALSE), /* pcrel_offset */
252b5132
RH		 531
532 /* Like R_PPC_REL24, but uses the value of the symbol within the
533 object rather than the final value. Normally used for
534 _GLOBAL_OFFSET_TABLE_. */
535 HOWTO (R_PPC_LOCAL24PC, /* type */
536 0, /* rightshift */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
538 26, /* bitsize */
b34976b6 539 TRUE, /* pc_relative */
252b5132
RH		 540 0, /* bitpos */
541 complain_overflow_signed, /* complain_on_overflow */
542 bfd_elf_generic_reloc, /* special_function */
543 "R_PPC_LOCAL24PC", /* name */
b34976b6 544 FALSE, /* partial_inplace */
252b5132
RH		 545 0, /* src_mask */
546 0x3fffffc, /* dst_mask */
b34976b6 547 TRUE), /* pcrel_offset */
252b5132
RH		 548
549 /* Like R_PPC_ADDR32, but may be unaligned. */
550 HOWTO (R_PPC_UADDR32, /* type */
551 0, /* rightshift */
552 2, /* size (0 = byte, 1 = short, 2 = long) */
553 32, /* bitsize */
b34976b6 554 FALSE, /* pc_relative */
252b5132
RH		 555 0, /* bitpos */
556 complain_overflow_bitfield, /* complain_on_overflow */
557 bfd_elf_generic_reloc, /* special_function */
558 "R_PPC_UADDR32", /* name */
b34976b6 559 FALSE, /* partial_inplace */
252b5132
RH		 560 0, /* src_mask */
561 0xffffffff, /* dst_mask */
b34976b6 562 FALSE), /* pcrel_offset */
252b5132
RH		 563
564 /* Like R_PPC_ADDR16, but may be unaligned. */
565 HOWTO (R_PPC_UADDR16, /* type */
566 0, /* rightshift */
567 1, /* size (0 = byte, 1 = short, 2 = long) */
568 16, /* bitsize */
b34976b6 569 FALSE, /* pc_relative */
252b5132
RH		 570 0, /* bitpos */
571 complain_overflow_bitfield, /* complain_on_overflow */
572 bfd_elf_generic_reloc, /* special_function */
573 "R_PPC_UADDR16", /* name */
b34976b6 574 FALSE, /* partial_inplace */
252b5132
RH		 575 0, /* src_mask */
576 0xffff, /* dst_mask */
b34976b6 577 FALSE), /* pcrel_offset */
252b5132
RH		 578
579 /* 32-bit PC relative */
580 HOWTO (R_PPC_REL32, /* type */
581 0, /* rightshift */
582 2, /* size (0 = byte, 1 = short, 2 = long) */
583 32, /* bitsize */
b34976b6 584 TRUE, /* pc_relative */
252b5132
RH		 585 0, /* bitpos */
586 complain_overflow_bitfield, /* complain_on_overflow */
587 bfd_elf_generic_reloc, /* special_function */
588 "R_PPC_REL32", /* name */
b34976b6 589 FALSE, /* partial_inplace */
252b5132
RH		 590 0, /* src_mask */
591 0xffffffff, /* dst_mask */
b34976b6 592 TRUE), /* pcrel_offset */
252b5132
RH		 593
594 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 595 FIXME: not supported. */
252b5132
RH		 596 HOWTO (R_PPC_PLT32, /* type */
597 0, /* rightshift */
598 2, /* size (0 = byte, 1 = short, 2 = long) */
599 32, /* bitsize */
b34976b6 600 FALSE, /* pc_relative */
252b5132
RH		 601 0, /* bitpos */
602 complain_overflow_bitfield, /* complain_on_overflow */
603 bfd_elf_generic_reloc, /* special_function */
604 "R_PPC_PLT32", /* name */
b34976b6 605 FALSE, /* partial_inplace */
252b5132
RH		 606 0, /* src_mask */
607 0, /* dst_mask */
b34976b6 608 FALSE), /* pcrel_offset */
252b5132
RH		 609
610 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 611 FIXME: not supported. */
252b5132
RH		 612 HOWTO (R_PPC_PLTREL32, /* type */
613 0, /* rightshift */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
615 32, /* bitsize */
b34976b6 616 TRUE, /* pc_relative */
252b5132
RH		 617 0, /* bitpos */
618 complain_overflow_bitfield, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC_PLTREL32", /* name */
b34976b6 621 FALSE, /* partial_inplace */
252b5132
RH		 622 0, /* src_mask */
623 0, /* dst_mask */
b34976b6 624 TRUE), /* pcrel_offset */
252b5132
RH		 625
626 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
627 the symbol. */
628 HOWTO (R_PPC_PLT16_LO, /* type */
629 0, /* rightshift */
630 1, /* size (0 = byte, 1 = short, 2 = long) */
631 16, /* bitsize */
b34976b6 632 FALSE, /* pc_relative */
252b5132
RH		 633 0, /* bitpos */
634 complain_overflow_dont, /* complain_on_overflow */
635 bfd_elf_generic_reloc, /* special_function */
636 "R_PPC_PLT16_LO", /* name */
b34976b6 637 FALSE, /* partial_inplace */
252b5132
RH		 638 0, /* src_mask */
639 0xffff, /* dst_mask */
b34976b6 640 FALSE), /* pcrel_offset */
252b5132
RH		 641
642 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
643 the symbol. */
644 HOWTO (R_PPC_PLT16_HI, /* type */
645 16, /* rightshift */
646 1, /* size (0 = byte, 1 = short, 2 = long) */
647 16, /* bitsize */
b34976b6 648 FALSE, /* pc_relative */
252b5132
RH		 649 0, /* bitpos */
650 complain_overflow_bitfield, /* complain_on_overflow */
651 bfd_elf_generic_reloc, /* special_function */
652 "R_PPC_PLT16_HI", /* name */
b34976b6 653 FALSE, /* partial_inplace */
252b5132
RH		 654 0, /* src_mask */
655 0xffff, /* dst_mask */
b34976b6 656 FALSE), /* pcrel_offset */
252b5132
RH		 657
658 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
659 the symbol. */
660 HOWTO (R_PPC_PLT16_HA, /* type */
661 16, /* rightshift */
662 1, /* size (0 = byte, 1 = short, 2 = long) */
663 16, /* bitsize */
b34976b6 664 FALSE, /* pc_relative */
252b5132
RH		 665 0, /* bitpos */
666 complain_overflow_bitfield, /* complain_on_overflow */
667 ppc_elf_addr16_ha_reloc, /* special_function */
668 "R_PPC_PLT16_HA", /* name */
b34976b6 669 FALSE, /* partial_inplace */
252b5132
RH		 670 0, /* src_mask */
671 0xffff, /* dst_mask */
b34976b6 672 FALSE), /* pcrel_offset */
252b5132
RH		 673
674 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
675 small data items. */
676 HOWTO (R_PPC_SDAREL16, /* type */
677 0, /* rightshift */
678 1, /* size (0 = byte, 1 = short, 2 = long) */
679 16, /* bitsize */
b34976b6 680 FALSE, /* pc_relative */
252b5132
RH		 681 0, /* bitpos */
682 complain_overflow_signed, /* complain_on_overflow */
683 bfd_elf_generic_reloc, /* special_function */
684 "R_PPC_SDAREL16", /* name */
b34976b6 685 FALSE, /* partial_inplace */
252b5132
RH		 686 0, /* src_mask */
687 0xffff, /* dst_mask */
b34976b6 688 FALSE), /* pcrel_offset */
252b5132 689
c061c2d8 690 /* 16-bit section relative relocation. */
252b5132
RH		 691 HOWTO (R_PPC_SECTOFF, /* type */
692 0, /* rightshift */
c061c2d8
AM		 693 1, /* size (0 = byte, 1 = short, 2 = long) */
694 16, /* bitsize */
b34976b6 695 FALSE, /* pc_relative */
252b5132
RH		 696 0, /* bitpos */
697 complain_overflow_bitfield, /* complain_on_overflow */
698 bfd_elf_generic_reloc, /* special_function */
699 "R_PPC_SECTOFF", /* name */
b34976b6 700 FALSE, /* partial_inplace */
252b5132 701 0, /* src_mask */
c061c2d8 702 0xffff, /* dst_mask */
b34976b6 703 FALSE), /* pcrel_offset */
252b5132 704
c3668558 705 /* 16-bit lower half section relative relocation. */
252b5132
RH		 706 HOWTO (R_PPC_SECTOFF_LO, /* type */
707 0, /* rightshift */
708 1, /* size (0 = byte, 1 = short, 2 = long) */
709 16, /* bitsize */
b34976b6 710 FALSE, /* pc_relative */
252b5132
RH		 711 0, /* bitpos */
712 complain_overflow_dont, /* complain_on_overflow */
713 bfd_elf_generic_reloc, /* special_function */
714 "R_PPC_SECTOFF_LO", /* name */
b34976b6 715 FALSE, /* partial_inplace */
252b5132
RH		 716 0, /* src_mask */
717 0xffff, /* dst_mask */
b34976b6 718 FALSE), /* pcrel_offset */
252b5132 719
c3668558 720 /* 16-bit upper half section relative relocation. */
252b5132
RH		 721 HOWTO (R_PPC_SECTOFF_HI, /* type */
722 16, /* rightshift */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
724 16, /* bitsize */
b34976b6 725 FALSE, /* pc_relative */
252b5132
RH		 726 0, /* bitpos */
727 complain_overflow_bitfield, /* complain_on_overflow */
728 bfd_elf_generic_reloc, /* special_function */
729 "R_PPC_SECTOFF_HI", /* name */
b34976b6 730 FALSE, /* partial_inplace */
252b5132
RH		 731 0, /* src_mask */
732 0xffff, /* dst_mask */
b34976b6 733 FALSE), /* pcrel_offset */
252b5132 734
c3668558 735 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH		 736 HOWTO (R_PPC_SECTOFF_HA, /* type */
737 16, /* rightshift */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
739 16, /* bitsize */
b34976b6 740 FALSE, /* pc_relative */
252b5132
RH		 741 0, /* bitpos */
742 complain_overflow_bitfield, /* complain_on_overflow */
743 ppc_elf_addr16_ha_reloc, /* special_function */
744 "R_PPC_SECTOFF_HA", /* name */
b34976b6 745 FALSE, /* partial_inplace */
252b5132
RH		 746 0, /* src_mask */
747 0xffff, /* dst_mask */
b34976b6 748 FALSE), /* pcrel_offset */
252b5132 749
7619e7c7
AM		 750 /* Marker reloc for TLS. */
751 HOWTO (R_PPC_TLS,
252b5132
RH		 752 0, /* rightshift */
753 2, /* size (0 = byte, 1 = short, 2 = long) */
754 32, /* bitsize */
b34976b6 755 FALSE, /* pc_relative */
252b5132 756 0, /* bitpos */
7619e7c7 757 complain_overflow_dont, /* complain_on_overflow */
252b5132 758 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM		 759 "R_PPC_TLS", /* name */
760 FALSE, /* partial_inplace */
761 0, /* src_mask */
762 0, /* dst_mask */
763 FALSE), /* pcrel_offset */
764
765 /* Computes the load module index of the load module that contains the
766 definition of its TLS sym. */
767 HOWTO (R_PPC_DTPMOD32,
768 0, /* rightshift */
769 2, /* size (0 = byte, 1 = short, 2 = long) */
770 32, /* bitsize */
771 FALSE, /* pc_relative */
772 0, /* bitpos */
773 complain_overflow_dont, /* complain_on_overflow */
774 ppc_elf_unhandled_reloc, /* special_function */
775 "R_PPC_DTPMOD32", /* name */
b34976b6 776 FALSE, /* partial_inplace */
252b5132
RH		 777 0, /* src_mask */
778 0xffffffff, /* dst_mask */
b34976b6 779 FALSE), /* pcrel_offset */
252b5132 780
7619e7c7
AM		 781 /* Computes a dtv-relative displacement, the difference between the value
782 of sym+add and the base address of the thread-local storage block that
783 contains the definition of sym, minus 0x8000. */
784 HOWTO (R_PPC_DTPREL32,
785 0, /* rightshift */
786 2, /* size (0 = byte, 1 = short, 2 = long) */
787 32, /* bitsize */
788 FALSE, /* pc_relative */
789 0, /* bitpos */
790 complain_overflow_dont, /* complain_on_overflow */
791 ppc_elf_unhandled_reloc, /* special_function */
792 "R_PPC_DTPREL32", /* name */
793 FALSE, /* partial_inplace */
794 0, /* src_mask */
795 0xffffffff, /* dst_mask */
796 FALSE), /* pcrel_offset */
797
798 /* A 16 bit dtprel reloc. */
799 HOWTO (R_PPC_DTPREL16,
252b5132
RH		 800 0, /* rightshift */
801 1, /* size (0 = byte, 1 = short, 2 = long) */
802 16, /* bitsize */
b34976b6 803 FALSE, /* pc_relative */
252b5132 804 0, /* bitpos */
7619e7c7
AM		 805 complain_overflow_signed, /* complain_on_overflow */
806 ppc_elf_unhandled_reloc, /* special_function */
807 "R_PPC_DTPREL16", /* name */
b34976b6 808 FALSE, /* partial_inplace */
252b5132
RH		 809 0, /* src_mask */
810 0xffff, /* dst_mask */
b34976b6 811 FALSE), /* pcrel_offset */
252b5132 812
7619e7c7
AM		 813 /* Like DTPREL16, but no overflow. */
814 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH		 815 0, /* rightshift */
816 1, /* size (0 = byte, 1 = short, 2 = long) */
817 16, /* bitsize */
b34976b6 818 FALSE, /* pc_relative */
252b5132 819 0, /* bitpos */
7619e7c7
AM		 820 complain_overflow_dont, /* complain_on_overflow */
821 ppc_elf_unhandled_reloc, /* special_function */
822 "R_PPC_DTPREL16_LO", /* name */
b34976b6 823 FALSE, /* partial_inplace */
252b5132
RH		 824 0, /* src_mask */
825 0xffff, /* dst_mask */
b34976b6 826 FALSE), /* pcrel_offset */
252b5132 827
7619e7c7
AM		 828 /* Like DTPREL16_LO, but next higher group of 16 bits. */
829 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH		 830 16, /* rightshift */
831 1, /* size (0 = byte, 1 = short, 2 = long) */
832 16, /* bitsize */
b34976b6 833 FALSE, /* pc_relative */
252b5132
RH		 834 0, /* bitpos */
835 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 836 ppc_elf_unhandled_reloc, /* special_function */
837 "R_PPC_DTPREL16_HI", /* name */
b34976b6 838 FALSE, /* partial_inplace */
252b5132
RH		 839 0, /* src_mask */
840 0xffff, /* dst_mask */
b34976b6 841 FALSE), /* pcrel_offset */
252b5132 842
7619e7c7
AM		 843 /* Like DTPREL16_HI, but adjust for low 16 bits. */
844 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH		 845 16, /* rightshift */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
847 16, /* bitsize */
b34976b6 848 FALSE, /* pc_relative */
252b5132
RH		 849 0, /* bitpos */
850 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 851 ppc_elf_unhandled_reloc, /* special_function */
852 "R_PPC_DTPREL16_HA", /* name */
b34976b6 853 FALSE, /* partial_inplace */
252b5132
RH		 854 0, /* src_mask */
855 0xffff, /* dst_mask */
b34976b6 856 FALSE), /* pcrel_offset */
252b5132 857
7619e7c7
AM		 858 /* Computes a tp-relative displacement, the difference between the value of
859 sym+add and the value of the thread pointer (r13). */
860 HOWTO (R_PPC_TPREL32,
861 0, /* rightshift */
862 2, /* size (0 = byte, 1 = short, 2 = long) */
863 32, /* bitsize */
864 FALSE, /* pc_relative */
865 0, /* bitpos */
866 complain_overflow_dont, /* complain_on_overflow */
867 ppc_elf_unhandled_reloc, /* special_function */
868 "R_PPC_TPREL32", /* name */
869 FALSE, /* partial_inplace */
870 0, /* src_mask */
871 0xffffffff, /* dst_mask */
872 FALSE), /* pcrel_offset */
873
874 /* A 16 bit tprel reloc. */
875 HOWTO (R_PPC_TPREL16,
252b5132
RH		 876 0, /* rightshift */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
878 16, /* bitsize */
b34976b6 879 FALSE, /* pc_relative */
252b5132 880 0, /* bitpos */
7619e7c7
AM		 881 complain_overflow_signed, /* complain_on_overflow */
882 ppc_elf_unhandled_reloc, /* special_function */
883 "R_PPC_TPREL16", /* name */
b34976b6 884 FALSE, /* partial_inplace */
252b5132
RH		 885 0, /* src_mask */
886 0xffff, /* dst_mask */
b34976b6 887 FALSE), /* pcrel_offset */
252b5132 888
7619e7c7
AM		 889 /* Like TPREL16, but no overflow. */
890 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH		 891 0, /* rightshift */
892 1, /* size (0 = byte, 1 = short, 2 = long) */
893 16, /* bitsize */
b34976b6 894 FALSE, /* pc_relative */
252b5132 895 0, /* bitpos */
7619e7c7
AM		 896 complain_overflow_dont, /* complain_on_overflow */
897 ppc_elf_unhandled_reloc, /* special_function */
898 "R_PPC_TPREL16_LO", /* name */
b34976b6 899 FALSE, /* partial_inplace */
252b5132
RH		 900 0, /* src_mask */
901 0xffff, /* dst_mask */
b34976b6 902 FALSE), /* pcrel_offset */
252b5132 903
7619e7c7
AM		 904 /* Like TPREL16_LO, but next higher group of 16 bits. */
905 HOWTO (R_PPC_TPREL16_HI,
906 16, /* rightshift */
907 1, /* size (0 = byte, 1 = short, 2 = long) */
908 16, /* bitsize */
909 FALSE, /* pc_relative */
910 0, /* bitpos */
911 complain_overflow_dont, /* complain_on_overflow */
912 ppc_elf_unhandled_reloc, /* special_function */
913 "R_PPC_TPREL16_HI", /* name */
914 FALSE, /* partial_inplace */
915 0, /* src_mask */
916 0xffff, /* dst_mask */
917 FALSE), /* pcrel_offset */
918
919 /* Like TPREL16_HI, but adjust for low 16 bits. */
920 HOWTO (R_PPC_TPREL16_HA,
921 16, /* rightshift */
922 1, /* size (0 = byte, 1 = short, 2 = long) */
923 16, /* bitsize */
924 FALSE, /* pc_relative */
925 0, /* bitpos */
926 complain_overflow_dont, /* complain_on_overflow */
927 ppc_elf_unhandled_reloc, /* special_function */
928 "R_PPC_TPREL16_HA", /* name */
929 FALSE, /* partial_inplace */
930 0, /* src_mask */
931 0xffff, /* dst_mask */
932 FALSE), /* pcrel_offset */
933
934 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
935 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
936 to the first entry. */
937 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH		 938 0, /* rightshift */
939 1, /* size (0 = byte, 1 = short, 2 = long) */
940 16, /* bitsize */
b34976b6 941 FALSE, /* pc_relative */
252b5132
RH		 942 0, /* bitpos */
943 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM		 944 ppc_elf_unhandled_reloc, /* special_function */
945 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 946 FALSE, /* partial_inplace */
252b5132
RH		 947 0, /* src_mask */
948 0xffff, /* dst_mask */
b34976b6 949 FALSE), /* pcrel_offset */
252b5132 950
7619e7c7
AM		 951 /* Like GOT_TLSGD16, but no overflow. */
952 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 953 0, /* rightshift */
7619e7c7 954 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 955 16, /* bitsize */
b34976b6 956 FALSE, /* pc_relative */
252b5132 957 0, /* bitpos */
7619e7c7
AM		 958 complain_overflow_dont, /* complain_on_overflow */
959 ppc_elf_unhandled_reloc, /* special_function */
960 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 961 FALSE, /* partial_inplace */
252b5132
RH		 962 0, /* src_mask */
963 0xffff, /* dst_mask */
b34976b6 964 FALSE), /* pcrel_offset */
252b5132 965
7619e7c7
AM		 966 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
967 HOWTO (R_PPC_GOT_TLSGD16_HI,
968 16, /* rightshift */
969 1, /* size (0 = byte, 1 = short, 2 = long) */
970 16, /* bitsize */
971 FALSE, /* pc_relative */
972 0, /* bitpos */
973 complain_overflow_dont, /* complain_on_overflow */
974 ppc_elf_unhandled_reloc, /* special_function */
975 "R_PPC_GOT_TLSGD16_HI", /* name */
976 FALSE, /* partial_inplace */
977 0, /* src_mask */
978 0xffff, /* dst_mask */
979 FALSE), /* pcrel_offset */
252b5132 980
7619e7c7
AM		 981 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
982 HOWTO (R_PPC_GOT_TLSGD16_HA,
983 16, /* rightshift */
984 1, /* size (0 = byte, 1 = short, 2 = long) */
985 16, /* bitsize */
986 FALSE, /* pc_relative */
987 0, /* bitpos */
988 complain_overflow_dont, /* complain_on_overflow */
989 ppc_elf_unhandled_reloc, /* special_function */
990 "R_PPC_GOT_TLSGD16_HA", /* name */
991 FALSE, /* partial_inplace */
992 0, /* src_mask */
993 0xffff, /* dst_mask */
994 FALSE), /* pcrel_offset */
995
996 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
997 with values (sym+add)@dtpmod and zero, and computes the offset to the
998 first entry. */
999 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH		 1000 0, /* rightshift */
1001 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 16, /* bitsize */
7619e7c7 1003 FALSE, /* pc_relative */
252b5132
RH		 1004 0, /* bitpos */
1005 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM		 1006 ppc_elf_unhandled_reloc, /* special_function */
1007 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1008 FALSE, /* partial_inplace */
252b5132
RH		 1009 0, /* src_mask */
1010 0xffff, /* dst_mask */
b34976b6 1011 FALSE), /* pcrel_offset */
252b5132 1012
7619e7c7
AM		 1013 /* Like GOT_TLSLD16, but no overflow. */
1014 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1015 0, /* rightshift */
7619e7c7
AM		 1016 1, /* size (0 = byte, 1 = short, 2 = long) */
1017 16, /* bitsize */
b34976b6 1018 FALSE, /* pc_relative */
252b5132
RH		 1019 0, /* bitpos */
1020 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 1021 ppc_elf_unhandled_reloc, /* special_function */
1022 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1023 FALSE, /* partial_inplace */
252b5132 1024 0, /* src_mask */
7619e7c7 1025 0xffff, /* dst_mask */
b34976b6 1026 FALSE), /* pcrel_offset */
252b5132 1027
7619e7c7
AM		 1028 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1029 HOWTO (R_PPC_GOT_TLSLD16_HI,
1030 16, /* rightshift */
1031 1, /* size (0 = byte, 1 = short, 2 = long) */
1032 16, /* bitsize */
b34976b6 1033 FALSE, /* pc_relative */
252b5132
RH		 1034 0, /* bitpos */
1035 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 1036 ppc_elf_unhandled_reloc, /* special_function */
1037 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1038 FALSE, /* partial_inplace */
252b5132 1039 0, /* src_mask */
7619e7c7 1040 0xffff, /* dst_mask */
b34976b6 1041 FALSE), /* pcrel_offset */
252b5132 1042
7619e7c7
AM		 1043 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1044 HOWTO (R_PPC_GOT_TLSLD16_HA,
1045 16, /* rightshift */
1046 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 16, /* bitsize */
1048 FALSE, /* pc_relative */
1049 0, /* bitpos */
1050 complain_overflow_dont, /* complain_on_overflow */
1051 ppc_elf_unhandled_reloc, /* special_function */
1052 "R_PPC_GOT_TLSLD16_HA", /* name */
1053 FALSE, /* partial_inplace */
1054 0, /* src_mask */
1055 0xffff, /* dst_mask */
1056 FALSE), /* pcrel_offset */
1057
1058 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1059 the offset to the entry. */
1060 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH		 1061 0, /* rightshift */
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 16, /* bitsize */
b34976b6 1064 FALSE, /* pc_relative */
252b5132
RH		 1065 0, /* bitpos */
1066 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM		 1067 ppc_elf_unhandled_reloc, /* special_function */
1068 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1069 FALSE, /* partial_inplace */
252b5132
RH		 1070 0, /* src_mask */
1071 0xffff, /* dst_mask */
b34976b6 1072 FALSE), /* pcrel_offset */
252b5132 1073
7619e7c7
AM		 1074 /* Like GOT_DTPREL16, but no overflow. */
1075 HOWTO (R_PPC_GOT_DTPREL16_LO,
1076 0, /* rightshift */
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 16, /* bitsize */
1079 FALSE, /* pc_relative */
1080 0, /* bitpos */
1081 complain_overflow_dont, /* complain_on_overflow */
1082 ppc_elf_unhandled_reloc, /* special_function */
1083 "R_PPC_GOT_DTPREL16_LO", /* name */
1084 FALSE, /* partial_inplace */
1085 0, /* src_mask */
1086 0xffff, /* dst_mask */
1087 FALSE), /* pcrel_offset */
252b5132 1088
7619e7c7
AM		 1089 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1090 HOWTO (R_PPC_GOT_DTPREL16_HI,
1091 16, /* rightshift */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 16, /* bitsize */
1094 FALSE, /* pc_relative */
1095 0, /* bitpos */
1096 complain_overflow_dont, /* complain_on_overflow */
1097 ppc_elf_unhandled_reloc, /* special_function */
1098 "R_PPC_GOT_DTPREL16_HI", /* name */
1099 FALSE, /* partial_inplace */
1100 0, /* src_mask */
1101 0xffff, /* dst_mask */
1102 FALSE), /* pcrel_offset */
252b5132 1103
7619e7c7
AM		 1104 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1105 HOWTO (R_PPC_GOT_DTPREL16_HA,
1106 16, /* rightshift */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 16, /* bitsize */
1109 FALSE, /* pc_relative */
1110 0, /* bitpos */
1111 complain_overflow_dont, /* complain_on_overflow */
1112 ppc_elf_unhandled_reloc, /* special_function */
1113 "R_PPC_GOT_DTPREL16_HA", /* name */
1114 FALSE, /* partial_inplace */
1115 0, /* src_mask */
1116 0xffff, /* dst_mask */
1117 FALSE), /* pcrel_offset */
c3668558 1118
7619e7c7
AM		 1119 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1120 offset to the entry. */
1121 HOWTO (R_PPC_GOT_TPREL16,
1122 0, /* rightshift */
1123 1, /* size (0 = byte, 1 = short, 2 = long) */
1124 16, /* bitsize */
1125 FALSE, /* pc_relative */
1126 0, /* bitpos */
1127 complain_overflow_signed, /* complain_on_overflow */
1128 ppc_elf_unhandled_reloc, /* special_function */
1129 "R_PPC_GOT_TPREL16", /* name */
1130 FALSE, /* partial_inplace */
1131 0, /* src_mask */
1132 0xffff, /* dst_mask */
1133 FALSE), /* pcrel_offset */
1134
1135 /* Like GOT_TPREL16, but no overflow. */
1136 HOWTO (R_PPC_GOT_TPREL16_LO,
1137 0, /* rightshift */
1138 1, /* size (0 = byte, 1 = short, 2 = long) */
1139 16, /* bitsize */
1140 FALSE, /* pc_relative */
1141 0, /* bitpos */
1142 complain_overflow_dont, /* complain_on_overflow */
1143 ppc_elf_unhandled_reloc, /* special_function */
1144 "R_PPC_GOT_TPREL16_LO", /* name */
1145 FALSE, /* partial_inplace */
1146 0, /* src_mask */
1147 0xffff, /* dst_mask */
1148 FALSE), /* pcrel_offset */
1149
1150 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1151 HOWTO (R_PPC_GOT_TPREL16_HI,
1152 16, /* rightshift */
1153 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 16, /* bitsize */
1155 FALSE, /* pc_relative */
1156 0, /* bitpos */
1157 complain_overflow_dont, /* complain_on_overflow */
1158 ppc_elf_unhandled_reloc, /* special_function */
1159 "R_PPC_GOT_TPREL16_HI", /* name */
1160 FALSE, /* partial_inplace */
1161 0, /* src_mask */
1162 0xffff, /* dst_mask */
1163 FALSE), /* pcrel_offset */
1164
1165 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1166 HOWTO (R_PPC_GOT_TPREL16_HA,
1167 16, /* rightshift */
1168 1, /* size (0 = byte, 1 = short, 2 = long) */
1169 16, /* bitsize */
1170 FALSE, /* pc_relative */
1171 0, /* bitpos */
1172 complain_overflow_dont, /* complain_on_overflow */
1173 ppc_elf_unhandled_reloc, /* special_function */
1174 "R_PPC_GOT_TPREL16_HA", /* name */
1175 FALSE, /* partial_inplace */
1176 0, /* src_mask */
1177 0xffff, /* dst_mask */
1178 FALSE), /* pcrel_offset */
1179
1180 /* The remaining relocs are from the Embedded ELF ABI, and are not
1181 in the SVR4 ELF ABI. */
1182
1183 /* 32 bit value resulting from the addend minus the symbol. */
1184 HOWTO (R_PPC_EMB_NADDR32, /* type */
1185 0, /* rightshift */
1186 2, /* size (0 = byte, 1 = short, 2 = long) */
1187 32, /* bitsize */
1188 FALSE, /* pc_relative */
1189 0, /* bitpos */
1190 complain_overflow_bitfield, /* complain_on_overflow */
1191 bfd_elf_generic_reloc, /* special_function */
1192 "R_PPC_EMB_NADDR32", /* name */
1193 FALSE, /* partial_inplace */
1194 0, /* src_mask */
1195 0xffffffff, /* dst_mask */
1196 FALSE), /* pcrel_offset */
1197
1198 /* 16 bit value resulting from the addend minus the symbol. */
1199 HOWTO (R_PPC_EMB_NADDR16, /* type */
1200 0, /* rightshift */
1201 1, /* size (0 = byte, 1 = short, 2 = long) */
1202 16, /* bitsize */
1203 FALSE, /* pc_relative */
1204 0, /* bitpos */
1205 complain_overflow_bitfield, /* complain_on_overflow */
1206 bfd_elf_generic_reloc, /* special_function */
1207 "R_PPC_EMB_NADDR16", /* name */
1208 FALSE, /* partial_inplace */
1209 0, /* src_mask */
1210 0xffff, /* dst_mask */
1211 FALSE), /* pcrel_offset */
1212
1213 /* 16 bit value resulting from the addend minus the symbol. */
1214 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1215 0, /* rightshift */
1216 1, /* size (0 = byte, 1 = short, 2 = long) */
1217 16, /* bitsize */
1218 FALSE, /* pc_relative */
1219 0, /* bitpos */
1220 complain_overflow_dont,/* complain_on_overflow */
1221 bfd_elf_generic_reloc, /* special_function */
1222 "R_PPC_EMB_ADDR16_LO", /* name */
1223 FALSE, /* partial_inplace */
1224 0, /* src_mask */
1225 0xffff, /* dst_mask */
1226 FALSE), /* pcrel_offset */
1227
1228 /* The high order 16 bits of the addend minus the symbol. */
1229 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1230 16, /* rightshift */
1231 1, /* size (0 = byte, 1 = short, 2 = long) */
1232 16, /* bitsize */
1233 FALSE, /* pc_relative */
1234 0, /* bitpos */
1235 complain_overflow_dont, /* complain_on_overflow */
1236 bfd_elf_generic_reloc, /* special_function */
1237 "R_PPC_EMB_NADDR16_HI", /* name */
1238 FALSE, /* partial_inplace */
1239 0, /* src_mask */
1240 0xffff, /* dst_mask */
1241 FALSE), /* pcrel_offset */
1242
1243 /* The high order 16 bits of the result of the addend minus the address,
1244 plus 1 if the contents of the low 16 bits, treated as a signed number,
1245 is negative. */
1246 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1247 16, /* rightshift */
1248 1, /* size (0 = byte, 1 = short, 2 = long) */
1249 16, /* bitsize */
1250 FALSE, /* pc_relative */
1251 0, /* bitpos */
1252 complain_overflow_dont, /* complain_on_overflow */
25dbc73a
AM		 1253 ppc_elf_addr16_ha_reloc, /* special_function */
1254 "R_PPC_EMB_NADDR16_HA", /* name */
1255 FALSE, /* partial_inplace */
1256 0, /* src_mask */
1257 0xffff, /* dst_mask */
1258 FALSE), /* pcrel_offset */
1259
1260 /* 16 bit value resulting from allocating a 4 byte word to hold an
1261 address in the .sdata section, and returning the offset from
1262 _SDA_BASE_ for that relocation. */
1263 HOWTO (R_PPC_EMB_SDAI16, /* type */
1264 0, /* rightshift */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1266 16, /* bitsize */
1267 FALSE, /* pc_relative */
1268 0, /* bitpos */
1269 complain_overflow_bitfield, /* complain_on_overflow */
1270 bfd_elf_generic_reloc, /* special_function */
1271 "R_PPC_EMB_SDAI16", /* name */
1272 FALSE, /* partial_inplace */
1273 0, /* src_mask */
1274 0xffff, /* dst_mask */
1275 FALSE), /* pcrel_offset */
1276
1277 /* 16 bit value resulting from allocating a 4 byte word to hold an
1278 address in the .sdata2 section, and returning the offset from
1279 _SDA2_BASE_ for that relocation. */
1280 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1281 0, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_bitfield, /* complain_on_overflow */
1287 bfd_elf_generic_reloc, /* special_function */
1288 "R_PPC_EMB_SDA2I16", /* name */
1289 FALSE, /* partial_inplace */
1290 0, /* src_mask */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1295 small data items. */
1296 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1297 0, /* rightshift */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1299 16, /* bitsize */
1300 FALSE, /* pc_relative */
1301 0, /* bitpos */
1302 complain_overflow_signed, /* complain_on_overflow */
1303 bfd_elf_generic_reloc, /* special_function */
1304 "R_PPC_EMB_SDA2REL", /* name */
1305 FALSE, /* partial_inplace */
1306 0, /* src_mask */
1307 0xffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1309
1310 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1311 signed offset from the appropriate base, and filling in the register
1312 field with the appropriate register (0, 2, or 13). */
1313 HOWTO (R_PPC_EMB_SDA21, /* type */
1314 0, /* rightshift */
1315 2, /* size (0 = byte, 1 = short, 2 = long) */
1316 16, /* bitsize */
1317 FALSE, /* pc_relative */
1318 0, /* bitpos */
1319 complain_overflow_signed, /* complain_on_overflow */
1320 bfd_elf_generic_reloc, /* special_function */
1321 "R_PPC_EMB_SDA21", /* name */
1322 FALSE, /* partial_inplace */
1323 0, /* src_mask */
1324 0xffff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1326
1327 /* Relocation not handled: R_PPC_EMB_MRKREF */
1328 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1329 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1330 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1331 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1332 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1333
1334 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1335 in the 16 bit signed offset from the appropriate base, and filling in the
1336 register field with the appropriate register (0, 2, or 13). */
1337 HOWTO (R_PPC_EMB_RELSDA, /* type */
1338 0, /* rightshift */
1339 1, /* size (0 = byte, 1 = short, 2 = long) */
1340 16, /* bitsize */
1341 TRUE, /* pc_relative */
1342 0, /* bitpos */
1343 complain_overflow_signed, /* complain_on_overflow */
1344 bfd_elf_generic_reloc, /* special_function */
1345 "R_PPC_EMB_RELSDA", /* name */
1346 FALSE, /* partial_inplace */
1347 0, /* src_mask */
1348 0xffff, /* dst_mask */
1349 FALSE), /* pcrel_offset */
1350
d7128ce4
AM		 1351 /* A 16 bit relative relocation. */
1352 HOWTO (R_PPC_REL16, /* type */
1353 0, /* rightshift */
1354 1, /* size (0 = byte, 1 = short, 2 = long) */
1355 16, /* bitsize */
1356 TRUE, /* pc_relative */
1357 0, /* bitpos */
1358 complain_overflow_bitfield, /* complain_on_overflow */
1359 bfd_elf_generic_reloc, /* special_function */
1360 "R_PPC_REL16", /* name */
1361 FALSE, /* partial_inplace */
1362 0, /* src_mask */
1363 0xffff, /* dst_mask */
1364 TRUE), /* pcrel_offset */
1365
1366 /* A 16 bit relative relocation without overflow. */
1367 HOWTO (R_PPC_REL16_LO, /* type */
1368 0, /* rightshift */
1369 1, /* size (0 = byte, 1 = short, 2 = long) */
1370 16, /* bitsize */
1371 TRUE, /* pc_relative */
1372 0, /* bitpos */
1373 complain_overflow_dont,/* complain_on_overflow */
1374 bfd_elf_generic_reloc, /* special_function */
1375 "R_PPC_REL16_LO", /* name */
1376 FALSE, /* partial_inplace */
1377 0, /* src_mask */
1378 0xffff, /* dst_mask */
1379 TRUE), /* pcrel_offset */
1380
1381 /* The high order 16 bits of a relative address. */
1382 HOWTO (R_PPC_REL16_HI, /* type */
1383 16, /* rightshift */
1384 1, /* size (0 = byte, 1 = short, 2 = long) */
1385 16, /* bitsize */
1386 TRUE, /* pc_relative */
1387 0, /* bitpos */
1388 complain_overflow_dont, /* complain_on_overflow */
1389 bfd_elf_generic_reloc, /* special_function */
1390 "R_PPC_REL16_HI", /* name */
1391 FALSE, /* partial_inplace */
1392 0, /* src_mask */
1393 0xffff, /* dst_mask */
1394 TRUE), /* pcrel_offset */
1395
1396 /* The high order 16 bits of a relative address, plus 1 if the contents of
1397 the low 16 bits, treated as a signed number, is negative. */
1398 HOWTO (R_PPC_REL16_HA, /* type */
1399 16, /* rightshift */
1400 1, /* size (0 = byte, 1 = short, 2 = long) */
1401 16, /* bitsize */
1402 TRUE, /* pc_relative */
1403 0, /* bitpos */
1404 complain_overflow_dont, /* complain_on_overflow */
1405 ppc_elf_addr16_ha_reloc, /* special_function */
1406 "R_PPC_REL16_HA", /* name */
1407 FALSE, /* partial_inplace */
1408 0, /* src_mask */
1409 0xffff, /* dst_mask */
1410 TRUE), /* pcrel_offset */
1411
25dbc73a
AM		 1412 /* GNU extension to record C++ vtable hierarchy. */
1413 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1414 0, /* rightshift */
1415 0, /* size (0 = byte, 1 = short, 2 = long) */
1416 0, /* bitsize */
1417 FALSE, /* pc_relative */
1418 0, /* bitpos */
1419 complain_overflow_dont, /* complain_on_overflow */
1420 NULL, /* special_function */
1421 "R_PPC_GNU_VTINHERIT", /* name */
1422 FALSE, /* partial_inplace */
1423 0, /* src_mask */
1424 0, /* dst_mask */
1425 FALSE), /* pcrel_offset */
1426
1427 /* GNU extension to record C++ vtable member usage. */
1428 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1429 0, /* rightshift */
1430 0, /* size (0 = byte, 1 = short, 2 = long) */
1431 0, /* bitsize */
1432 FALSE, /* pc_relative */
1433 0, /* bitpos */
1434 complain_overflow_dont, /* complain_on_overflow */
1435 NULL, /* special_function */
1436 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM		 1437 FALSE, /* partial_inplace */
1438 0, /* src_mask */
25dbc73a 1439 0, /* dst_mask */
7619e7c7
AM		 1440 FALSE), /* pcrel_offset */
1441
25dbc73a
AM		 1442 /* Phony reloc to handle AIX style TOC entries. */
1443 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM		 1444 0, /* rightshift */
1445 1, /* size (0 = byte, 1 = short, 2 = long) */
1446 16, /* bitsize */
1447 FALSE, /* pc_relative */
1448 0, /* bitpos */
25dbc73a 1449 complain_overflow_signed, /* complain_on_overflow */
7619e7c7 1450 bfd_elf_generic_reloc, /* special_function */
25dbc73a 1451 "R_PPC_TOC16", /* name */
7619e7c7
AM		 1452 FALSE, /* partial_inplace */
1453 0, /* src_mask */
1454 0xffff, /* dst_mask */
1455 FALSE), /* pcrel_offset */
25dbc73a
AM		 1456};
1457\f
1458/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1459
1460static void
1461ppc_elf_howto_init (void)
1462{
1463 unsigned int i, type;
1464
1465 for (i = 0;
1466 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1467 i++)
1468 {
1469 type = ppc_elf_howto_raw[i].type;
1470 if (type >= (sizeof (ppc_elf_howto_table)
1471 / sizeof (ppc_elf_howto_table[0])))
1472 abort ();
1473 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1474 }
1475}
1476
1477static reloc_howto_type *
1478ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1479 bfd_reloc_code_real_type code)
1480{
1481 enum elf_ppc_reloc_type r;
1482
1483 /* Initialize howto table if not already done. */
1484 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1485 ppc_elf_howto_init ();
1486
1487 switch (code)
1488 {
1489 default:
1490 return NULL;
1491
1492 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1493 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1494 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1495 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1496 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1497 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1498 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1499 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1500 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1501 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1502 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1503 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1504 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1505 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1506 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1507 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1508 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1509 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1510 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1511 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1512 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1513 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1514 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1515 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1516 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1517 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1518 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1519 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1520 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1521 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1522 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1523 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1524 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1525 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1526 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1527 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1528 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1529 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1530 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1531 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1532 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1533 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1534 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1535 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1536 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1537 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1538 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1539 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1540 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1541 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1542 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1543 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1544 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1545 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1546 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1547 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1548 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1549 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1550 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1551 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1552 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1553 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1554 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1555 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1556 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1557 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1558 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1559 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1560 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1561 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1562 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1563 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1564 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1565 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1566 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1567 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1568 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1569 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1570 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
d7128ce4
AM		 1571 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1572 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1573 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1574 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
25dbc73a
AM		 1575 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1576 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1577 }
1578
1579 return ppc_elf_howto_table[r];
1580};
1581
157090f7
AM		 1582static reloc_howto_type *
1583ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1584 const char *r_name)
1585{
1586 unsigned int i;
1587
1588 for (i = 0;
1589 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1590 i++)
1591 if (ppc_elf_howto_raw[i].name != NULL
1592 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1593 return &ppc_elf_howto_raw[i];
1594
1595 return NULL;
1596}
1597
25dbc73a
AM		 1598/* Set the howto pointer for a PowerPC ELF reloc. */
1599
1600static void
1601ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1602 arelent *cache_ptr,
1603 Elf_Internal_Rela *dst)
1604{
1605 /* Initialize howto table if not already done. */
1606 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1607 ppc_elf_howto_init ();
1608
1609 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1610 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
375de94a
AM		 1611
1612 /* Just because the above assert didn't trigger doesn't mean that
1613 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1614 if (!cache_ptr->howto)
1615 {
1616 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1617 abfd, ELF32_R_TYPE (dst->r_info));
1618 bfd_set_error (bfd_error_bad_value);
1619
1620 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1621 }
25dbc73a
AM		 1622}
1623
d7128ce4 1624/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM		 1625
1626static bfd_reloc_status_type
1627ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1628 arelent *reloc_entry,
1629 asymbol *symbol,
1630 void *data ATTRIBUTE_UNUSED,
1631 asection *input_section,
1632 bfd *output_bfd,
1633 char **error_message ATTRIBUTE_UNUSED)
1634{
1635 bfd_vma relocation;
1636
1637 if (output_bfd != NULL)
1638 {
1639 reloc_entry->address += input_section->output_offset;
1640 return bfd_reloc_ok;
1641 }
1642
1643 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1644 return bfd_reloc_outofrange;
1645
1646 if (bfd_is_com_section (symbol->section))
1647 relocation = 0;
1648 else
1649 relocation = symbol->value;
1650
1651 relocation += symbol->section->output_section->vma;
1652 relocation += symbol->section->output_offset;
1653 relocation += reloc_entry->addend;
d7128ce4
AM		 1654 if (reloc_entry->howto->pc_relative)
1655 relocation -= reloc_entry->address;
25dbc73a
AM		 1656
1657 reloc_entry->addend += (relocation & 0x8000) << 1;
1658
1659 return bfd_reloc_continue;
1660}
1661
1662static bfd_reloc_status_type
1663ppc_elf_unhandled_reloc (bfd *abfd,
1664 arelent *reloc_entry,
1665 asymbol *symbol,
1666 void *data,
1667 asection *input_section,
1668 bfd *output_bfd,
1669 char **error_message)
1670{
1671 /* If this is a relocatable link (output_bfd test tells us), just
1672 call the generic function. Any adjustment will be done at final
1673 link time. */
1674 if (output_bfd != NULL)
1675 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1676 input_section, output_bfd, error_message);
1677
1678 if (error_message != NULL)
1679 {
1680 static char buf[60];
1681 sprintf (buf, _("generic linker can't handle %s"),
1682 reloc_entry->howto->name);
1683 *error_message = buf;
1684 }
1685 return bfd_reloc_dangerous;
1686}
1687\f
1688/* Sections created by the linker. */
1689
1690typedef struct elf_linker_section
1691{
c9a2f333 1692 /* Pointer to the bfd section. */
25dbc73a 1693 asection *section;
c9a2f333
AM		 1694 /* Section name. */
1695 const char *name;
1696 /* Associated bss section name. */
1697 const char *bss_name;
1698 /* Associated symbol name. */
1699 const char *sym_name;
046183de
AM		 1700 /* Associated symbol. */
1701 struct elf_link_hash_entry *sym;
25dbc73a
AM		 1702} elf_linker_section_t;
1703
1704/* Linked list of allocated pointer entries. This hangs off of the
1705 symbol lists, and provides allows us to return different pointers,
1706 based on different addend's. */
1707
1708typedef struct elf_linker_section_pointers
1709{
1710 /* next allocated pointer for this symbol */
1711 struct elf_linker_section_pointers *next;
1712 /* offset of pointer from beginning of section */
1713 bfd_vma offset;
1714 /* addend used */
1715 bfd_vma addend;
1716 /* which linker section this is */
1717 elf_linker_section_t *lsect;
25dbc73a
AM		 1718} elf_linker_section_pointers_t;
1719
1720struct ppc_elf_obj_tdata
1721{
1722 struct elf_obj_tdata elf;
1723
1724 /* A mapping from local symbols to offsets into the various linker
1725 sections added. This is index by the symbol index. */
1726 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM		 1727
1728 /* Flags used to auto-detect plt type. */
1729 unsigned int makes_plt_call : 1;
1730 unsigned int has_rel16 : 1;
25dbc73a
AM		 1731};
1732
1733#define ppc_elf_tdata(bfd) \
1734 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 1735
25dbc73a
AM		 1736#define elf_local_ptr_offsets(bfd) \
1737 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 1738
0c8d6e5c
AM		 1739#define is_ppc_elf(bfd) \
1740 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1741 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1742
25dbc73a 1743/* Override the generic function because we store some extras. */
7619e7c7 1744
25dbc73a
AM		 1745static bfd_boolean
1746ppc_elf_mkobject (bfd *abfd)
1747{
0ffa91dd
NC		 1748 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1749 PPC32_ELF_TDATA);
25dbc73a 1750}
7619e7c7 1751
25dbc73a
AM		 1752/* Fix bad default arch selected for a 32 bit input bfd when the
1753 default is 64 bit. */
7619e7c7 1754
25dbc73a
AM		 1755static bfd_boolean
1756ppc_elf_object_p (bfd *abfd)
1757{
1758 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1759 {
1760 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 1761
25dbc73a
AM		 1762 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1763 {
1764 /* Relies on arch after 64 bit default being 32 bit default. */
1765 abfd->arch_info = abfd->arch_info->next;
1766 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1767 }
1768 }
1769 return TRUE;
1770}
7619e7c7 1771
25dbc73a 1772/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 1773
25dbc73a
AM		 1774static bfd_boolean
1775ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1776{
1777 BFD_ASSERT (!elf_flags_init (abfd)
1778 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 1779
25dbc73a
AM		 1780 elf_elfheader (abfd)->e_flags = flags;
1781 elf_flags_init (abfd) = TRUE;
1782 return TRUE;
1783}
1784
25dbc73a 1785/* Support for core dump NOTE sections. */
deaaf2f3 1786
b34976b6 1787static bfd_boolean
25dbc73a 1788ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 1789{
25dbc73a
AM		 1790 int offset;
1791 unsigned int size;
252b5132 1792
25dbc73a
AM		 1793 switch (note->descsz)
1794 {
1795 default:
1796 return FALSE;
252b5132 1797
25dbc73a
AM		 1798 case 268: /* Linux/PPC. */
1799 /* pr_cursig */
1800 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 1801
25dbc73a
AM		 1802 /* pr_pid */
1803 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 1804
25dbc73a
AM		 1805 /* pr_reg */
1806 offset = 72;
1807 size = 192;
deaaf2f3 1808
25dbc73a
AM		 1809 break;
1810 }
deaaf2f3 1811
25dbc73a
AM		 1812 /* Make a ".reg/999" section. */
1813 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1814 size, note->descpos + offset);
1815}
252b5132 1816
25dbc73a
AM		 1817static bfd_boolean
1818ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1819{
1820 switch (note->descsz)
deaaf2f3 1821 {
25dbc73a
AM		 1822 default:
1823 return FALSE;
deaaf2f3 1824
25dbc73a
AM		 1825 case 128: /* Linux/PPC elf_prpsinfo. */
1826 elf_tdata (abfd)->core_program
1827 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1828 elf_tdata (abfd)->core_command
1829 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1830 }
9abc968f 1831
25dbc73a
AM		 1832 /* Note that for some reason, a spurious space is tacked
1833 onto the end of the args in some (at least one anyway)
1834 implementations, so strip it off if it exists. */
70bccea4 1835
25dbc73a
AM		 1836 {
1837 char *command = elf_tdata (abfd)->core_command;
1838 int n = strlen (command);
70bccea4 1839
25dbc73a
AM		 1840 if (0 < n && command[n - 1] == ' ')
1841 command[n - 1] = '\0';
1842 }
deaaf2f3 1843
25dbc73a
AM		 1844 return TRUE;
1845}
deaaf2f3 1846
183e98be
AM		 1847static char *
1848ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1849{
1850 switch (note_type)
1851 {
1852 default:
1853 return NULL;
1854
1855 case NT_PRPSINFO:
1856 {
1857 char data[128];
1858 va_list ap;
1859
1860 va_start (ap, note_type);
1861 memset (data, 0, 32);
1862 strncpy (data + 32, va_arg (ap, const char *), 16);
1863 strncpy (data + 48, va_arg (ap, const char *), 80);
1864 va_end (ap);
1865 return elfcore_write_note (abfd, buf, bufsiz,
1866 "CORE", note_type, data, sizeof (data));
1867 }
1868
1869 case NT_PRSTATUS:
1870 {
1871 char data[268];
1872 va_list ap;
1873 long pid;
1874 int cursig;
1875 const void *greg;
1876
1877 va_start (ap, note_type);
1878 memset (data, 0, 72);
1879 pid = va_arg (ap, long);
1880 bfd_put_32 (abfd, pid, data + 24);
1881 cursig = va_arg (ap, int);
1882 bfd_put_16 (abfd, cursig, data + 12);
1883 greg = va_arg (ap, const void *);
1884 memcpy (data + 72, greg, 192);
1885 memset (data + 264, 0, 4);
1886 va_end (ap);
1887 return elfcore_write_note (abfd, buf, bufsiz,
1888 "CORE", note_type, data, sizeof (data));
1889 }
1890 }
1891}
1892
25dbc73a
AM		 1893/* Return address for Ith PLT stub in section PLT, for relocation REL
1894 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 1895
25dbc73a
AM		 1896static bfd_vma
1897ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1898 const asection *plt ATTRIBUTE_UNUSED,
1899 const arelent *rel)
1900{
1901 return rel->address;
1902}
deaaf2f3 1903
25dbc73a 1904/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L		 1905 is called when bfd_section_from_shdr finds a section with an unknown
1906 type. */
deaaf2f3 1907
25dbc73a 1908static bfd_boolean
6dc132d9
L		 1909ppc_elf_section_from_shdr (bfd *abfd,
1910 Elf_Internal_Shdr *hdr,
1911 const char *name,
1912 int shindex)
25dbc73a
AM		 1913{
1914 asection *newsect;
1915 flagword flags;
d1c6de6f 1916
6dc132d9 1917 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 1918 return FALSE;
deaaf2f3 1919
25dbc73a
AM		 1920 newsect = hdr->bfd_section;
1921 flags = bfd_get_section_flags (abfd, newsect);
1922 if (hdr->sh_flags & SHF_EXCLUDE)
1923 flags |= SEC_EXCLUDE;
9abc968f 1924
25dbc73a
AM		 1925 if (hdr->sh_type == SHT_ORDERED)
1926 flags |= SEC_SORT_ENTRIES;
d1c6de6f 1927
25dbc73a
AM		 1928 bfd_set_section_flags (abfd, newsect, flags);
1929 return TRUE;
1930}
1931
1932/* Set up any other section flags and such that may be necessary. */
1933
1934static bfd_boolean
1935ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1936 Elf_Internal_Shdr *shdr,
1937 asection *asect)
1938{
d30e8e7c 1939 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
25dbc73a
AM		 1940 shdr->sh_flags |= SHF_EXCLUDE;
1941
1942 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1943 shdr->sh_type = SHT_ORDERED;
1944
1945 return TRUE;
1946}
1947
1948/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1949 need to bump up the number of section headers. */
1950
1951static int
a6b96beb
AM		 1952ppc_elf_additional_program_headers (bfd *abfd,
1953 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM		 1954{
1955 asection *s;
1956 int ret = 0;
d1c6de6f 1957
25dbc73a
AM		 1958 s = bfd_get_section_by_name (abfd, ".sbss2");
1959 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1960 ++ret;
d1c6de6f 1961
25dbc73a
AM		 1962 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1963 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1964 ++ret;
deaaf2f3 1965
25dbc73a
AM		 1966 return ret;
1967}
deaaf2f3 1968
25dbc73a
AM		 1969/* Add extra PPC sections -- Note, for now, make .sbss2 and
1970 .PPC.EMB.sbss0 a normal section, and not a bss section so
1971 that the linker doesn't crater when trying to make more than
1972 2 sections. */
e656e369 1973
b35d266b 1974static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 1975{
0112cd26
NC		 1976 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1977 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1978 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1979 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1980 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1981 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1982 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
1983 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1984 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1985 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 1986};
1987
551b43fd
AM		 1988/* This is what we want for new plt/got. */
1989static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 1990 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM		 1991
1992static const struct bfd_elf_special_section *
1993ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 1994{
b35d266b 1995 const struct bfd_elf_special_section *ssect;
551b43fd
AM		 1996
1997 /* See if this is one of the special sections. */
1998 if (sec->name == NULL)
1999 return NULL;
2000
2001 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2002 sec->use_rela_p);
2003 if (ssect != NULL)
2004 {
2005 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2006 ssect = &ppc_alt_plt;
2007 return ssect;
2008 }
2009
2010 return _bfd_elf_get_sec_type_attr (abfd, sec);
2011}
25dbc73a
AM		 2012\f
2013/* Very simple linked list structure for recording apuinfo values. */
2014typedef struct apuinfo_list
2015{
2016 struct apuinfo_list *next;
2017 unsigned long value;
2018}
2019apuinfo_list;
e656e369 2020
25dbc73a 2021static apuinfo_list *head;
deaaf2f3 2022
deaaf2f3 2023
25dbc73a
AM		 2024static void
2025apuinfo_list_init (void)
2026{
2027 head = NULL;
2028}
9abc968f 2029
25dbc73a
AM		 2030static void
2031apuinfo_list_add (unsigned long value)
2032{
2033 apuinfo_list *entry = head;
deaaf2f3 2034
25dbc73a
AM		 2035 while (entry != NULL)
2036 {
2037 if (entry->value == value)
2038 return;
2039 entry = entry->next;
2040 }
b4a38de6 2041
25dbc73a
AM		 2042 entry = bfd_malloc (sizeof (* entry));
2043 if (entry == NULL)
2044 return;
e656e369 2045
25dbc73a
AM		 2046 entry->value = value;
2047 entry->next = head;
2048 head = entry;
2049}
9abc968f 2050
25dbc73a
AM		 2051static unsigned
2052apuinfo_list_length (void)
2053{
2054 apuinfo_list *entry;
2055 unsigned long count;
9abc968f 2056
25dbc73a
AM		 2057 for (entry = head, count = 0;
2058 entry;
2059 entry = entry->next)
2060 ++ count;
e656e369 2061
25dbc73a
AM		 2062 return count;
2063}
eea6121a 2064
25dbc73a
AM		 2065static inline unsigned long
2066apuinfo_list_element (unsigned long number)
2067{
2068 apuinfo_list * entry;
e656e369 2069
25dbc73a
AM		 2070 for (entry = head;
2071 entry && number --;
2072 entry = entry->next)
2073 ;
252b5132 2074
25dbc73a
AM		 2075 return entry ? entry->value : 0;
2076}
2077
2078static void
2079apuinfo_list_finish (void)
2080{
2081 apuinfo_list *entry;
2082
2083 for (entry = head; entry;)
252b5132 2084 {
25dbc73a
AM		 2085 apuinfo_list *next = entry->next;
2086 free (entry);
2087 entry = next;
2088 }
9abc968f 2089
25dbc73a
AM		 2090 head = NULL;
2091}
9abc968f 2092
25dbc73a
AM		 2093#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2094#define APUINFO_LABEL "APUinfo"
9abc968f 2095
25dbc73a
AM		 2096/* Scan the input BFDs and create a linked list of
2097 the APUinfo values that will need to be emitted. */
9abc968f 2098
25dbc73a
AM		 2099static void
2100ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2101{
2102 bfd *ibfd;
2103 asection *asec;
2104 char *buffer;
2105 unsigned num_input_sections;
2106 bfd_size_type output_section_size;
2107 unsigned i;
2108 unsigned num_entries;
2109 unsigned long offset;
2110 unsigned long length;
2111 const char *error_message = NULL;
9abc968f 2112
25dbc73a
AM		 2113 if (link_info == NULL)
2114 return;
9abc968f 2115
25dbc73a
AM		 2116 /* Scan the input bfds, looking for apuinfo sections. */
2117 num_input_sections = 0;
2118 output_section_size = 0;
252b5132 2119
25dbc73a 2120 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2121 {
25dbc73a
AM		 2122 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2123 if (asec)
252b5132 2124 {
25dbc73a
AM		 2125 ++ num_input_sections;
2126 output_section_size += asec->size;
252b5132 2127 }
252b5132
RH		 2128 }
2129
25dbc73a
AM		 2130 /* We need at least one input sections
2131 in order to make merging worthwhile. */
2132 if (num_input_sections < 1)
2133 return;
deaaf2f3 2134
25dbc73a
AM		 2135 /* Just make sure that the output section exists as well. */
2136 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2137 if (asec == NULL)
2138 return;
252b5132 2139
25dbc73a
AM		 2140 /* Allocate a buffer for the contents of the input sections. */
2141 buffer = bfd_malloc (output_section_size);
2142 if (buffer == NULL)
2143 return;
252b5132 2144
25dbc73a
AM		 2145 offset = 0;
2146 apuinfo_list_init ();
252b5132 2147
25dbc73a
AM		 2148 /* Read in the input sections contents. */
2149 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2150 {
25dbc73a
AM		 2151 unsigned long datum;
2152 char *ptr;
252b5132 2153
25dbc73a
AM		 2154 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2155 if (asec == NULL)
2156 continue;
252b5132 2157
25dbc73a
AM		 2158 length = asec->size;
2159 if (length < 24)
2160 {
2161 error_message = _("corrupt or empty %s section in %B");
2162 goto fail;
2163 }
252b5132 2164
25dbc73a
AM		 2165 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2166 || (bfd_bread (buffer + offset, length, ibfd) != length))
2167 {
2168 error_message = _("unable to read in %s section from %B");
2169 goto fail;
2170 }
252b5132 2171
25dbc73a
AM		 2172 /* Process the contents of the section. */
2173 ptr = buffer + offset;
2174 error_message = _("corrupt %s section in %B");
252b5132 2175
25dbc73a
AM		 2176 /* Verify the contents of the header. Note - we have to
2177 extract the values this way in order to allow for a
2178 host whose endian-ness is different from the target. */
2179 datum = bfd_get_32 (ibfd, ptr);
2180 if (datum != sizeof APUINFO_LABEL)
2181 goto fail;
252b5132 2182
25dbc73a
AM		 2183 datum = bfd_get_32 (ibfd, ptr + 8);
2184 if (datum != 0x2)
2185 goto fail;
252b5132 2186
25dbc73a
AM		 2187 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2188 goto fail;
252b5132 2189
25dbc73a
AM		 2190 /* Get the number of bytes used for apuinfo entries. */
2191 datum = bfd_get_32 (ibfd, ptr + 4);
2192 if (datum + 20 != length)
2193 goto fail;
2194
2195 /* Make sure that we do not run off the end of the section. */
2196 if (offset + length > output_section_size)
2197 goto fail;
2198
2199 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2200 for (i = 0; i < datum; i += 4)
2201 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2202
2203 /* Update the offset. */
2204 offset += length;
252b5132
RH		 2205 }
2206
25dbc73a 2207 error_message = NULL;
252b5132 2208
25dbc73a
AM		 2209 /* Compute the size of the output section. */
2210 num_entries = apuinfo_list_length ();
2211 output_section_size = 20 + num_entries * 4;
252b5132 2212
25dbc73a
AM		 2213 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2214
2215 if (! bfd_set_section_size (abfd, asec, output_section_size))
2216 ibfd = abfd,
2217 error_message = _("warning: unable to set size of %s section in %B");
2218
2219 fail:
2220 free (buffer);
2221
2222 if (error_message)
2223 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2224}
252b5132 2225
25dbc73a
AM		 2226/* Prevent the output section from accumulating the input sections'
2227 contents. We have already stored this in our linked list structure. */
252b5132 2228
25dbc73a
AM		 2229static bfd_boolean
2230ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2231 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM		 2232 asection *asec,
2233 bfd_byte *contents ATTRIBUTE_UNUSED)
2234{
2235 return (apuinfo_list_length ()
2236 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
252b5132
RH		 2237}
2238
25dbc73a
AM		 2239/* Finally we can generate the output section. */
2240
2241static void
2242ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2243{
25dbc73a
AM		 2244 bfd_byte *buffer;
2245 asection *asec;
2246 unsigned i;
2247 unsigned num_entries;
2248 bfd_size_type length;
7619e7c7 2249
25dbc73a
AM		 2250 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2251 if (asec == NULL)
2252 return;
2253
2254 if (apuinfo_list_length () == 0)
2255 return;
2256
2257 length = asec->size;
2258 if (length < 20)
2259 return;
2260
2261 buffer = bfd_malloc (length);
2262 if (buffer == NULL)
7619e7c7 2263 {
25dbc73a
AM		 2264 (*_bfd_error_handler)
2265 (_("failed to allocate space for new APUinfo section."));
2266 return;
7619e7c7 2267 }
7619e7c7 2268
25dbc73a
AM		 2269 /* Create the apuinfo header. */
2270 num_entries = apuinfo_list_length ();
2271 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2272 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2273 bfd_put_32 (abfd, 0x2, buffer + 8);
2274 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2275
25dbc73a
AM		 2276 length = 20;
2277 for (i = 0; i < num_entries; i++)
feee612b 2278 {
25dbc73a
AM		 2279 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2280 length += 4;
feee612b 2281 }
feee612b 2282
25dbc73a
AM		 2283 if (length != asec->size)
2284 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2285
25dbc73a
AM		 2286 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2287 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2288
25dbc73a
AM		 2289 free (buffer);
2290
2291 apuinfo_list_finish ();
252b5132 2292}
25dbc73a 2293\f
7382d32a
AM		 2294static bfd_boolean
2295is_pic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2296{
2297 bfd_byte buf[16];
2298 unsigned int insn;
2299
2300 if (!bfd_get_section_contents (abfd, glink, buf, off, 16))
2301 return FALSE;
2302
2303 insn = bfd_get_32 (abfd, buf);
2304 if ((insn & 0xffff0000) == LWZ_11_30
2305 && bfd_get_32 (abfd, buf + 4) == MTCTR_11
2306 && bfd_get_32 (abfd, buf + 8) == BCTR)
2307 return TRUE;
2308
2309 if ((insn & 0xffff0000) == ADDIS_11_30
2310 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2311 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2312 && bfd_get_32 (abfd, buf + 12) == BCTR)
2313 return TRUE;
2314 return FALSE;
2315}
2316
468392fb
AM		 2317static bfd_boolean
2318section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2319{
2320 bfd_vma vma = *(bfd_vma *) ptr;
2321 return ((section->flags & SEC_ALLOC) != 0
2322 && section->vma <= vma
2323 && vma < section->vma + section->size);
2324}
2325
2326static long
2327ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2328 long dynsymcount, asymbol **dynsyms,
2329 asymbol **ret)
2330{
2331 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2332 asection *plt, *relplt, *dynamic, *glink;
2333 bfd_vma glink_vma = 0;
2334 bfd_vma resolv_vma = 0;
2335 bfd_vma stub_vma;
2336 asymbol *s;
2337 arelent *p;
2338 long count, i;
2339 size_t size;
2340 char *names;
2341 bfd_byte buf[4];
2342
2343 *ret = NULL;
2344
2345 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2346 return 0;
2347
2348 if (dynsymcount <= 0)
2349 return 0;
2350
2351 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2352 if (relplt == NULL)
2353 return 0;
2354
2355 plt = bfd_get_section_by_name (abfd, ".plt");
2356 if (plt == NULL)
2357 return 0;
2358
2359 /* Call common code to handle old-style executable PLTs. */
2360 if (elf_section_flags (plt) & SHF_EXECINSTR)
2361 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2362 dynsymcount, dynsyms, ret);
2363
2364 /* If this object was prelinked, the prelinker stored the address
2365 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2366 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2367 if (dynamic != NULL)
2368 {
2369 bfd_byte *dynbuf, *extdyn, *extdynend;
2370 size_t extdynsize;
2371 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2372
2373 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2374 return -1;
2375
2376 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2377 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2378
2379 extdyn = dynbuf;
2380 extdynend = extdyn + dynamic->size;
2381 for (; extdyn < extdynend; extdyn += extdynsize)
2382 {
2383 Elf_Internal_Dyn dyn;
2384 (*swap_dyn_in) (abfd, extdyn, &dyn);
2385
2386 if (dyn.d_tag == DT_NULL)
2387 break;
2388
2389 if (dyn.d_tag == DT_PPC_GOT)
2390 {
2391 unsigned int g_o_t = dyn.d_un.d_val;
2392 asection *got = bfd_get_section_by_name (abfd, ".got");
2393 if (got != NULL
2394 && bfd_get_section_contents (abfd, got, buf,
2395 g_o_t - got->vma + 4, 4))
2396 glink_vma = bfd_get_32 (abfd, buf);
2397 break;
2398 }
2399 }
2400 free (dynbuf);
2401 }
2402
2403 /* Otherwise we read the first plt entry. */
2404 if (glink_vma == 0)
2405 {
2406 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2407 glink_vma = bfd_get_32 (abfd, buf);
2408 }
2409
2410 if (glink_vma == 0)
2411 return 0;
2412
2413 /* The .glink section usually does not survive the final
2414 link; search for the section (usually .text) where the
2415 glink stubs now reside. */
2416 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2417 if (glink == NULL)
2418 return 0;
2419
2420 /* Determine glink PLT resolver by reading the relative branch
2421 from the first glink stub. */
2422 if (bfd_get_section_contents (abfd, glink, buf,
2423 glink_vma - glink->vma, 4))
2424 {
2425 unsigned int insn = bfd_get_32 (abfd, buf);
2426
2427 /* The first glink stub may either branch to the resolver ... */
2428 insn ^= B;
2429 if ((insn & ~0x3fffffc) == 0)
2430 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2431
2432 /* ... or fall through a bunch of NOPs. */
2433 else if ((insn ^ B ^ NOP) == 0)
2434 for (i = 4;
2435 bfd_get_section_contents (abfd, glink, buf,
2436 glink_vma - glink->vma + i, 4);
2437 i += 4)
2438 if (bfd_get_32 (abfd, buf) != NOP)
2439 {
2440 resolv_vma = glink_vma + i;
2441 break;
2442 }
2443 }
2444
7382d32a
AM		 2445 count = relplt->size / sizeof (Elf32_External_Rela);
2446 stub_vma = glink_vma - (bfd_vma) count * 16;
2447 /* If the stubs are those for -shared/-pie then we might have
2448 multiple stubs for each plt entry. If that is the case then
2449 there is no way to associate stubs with their plt entries short
2450 of figuring out the GOT pointer value used in the stub. */
2451 if (!bfd_get_section_contents (abfd, glink, buf,
2452 stub_vma - glink->vma, 4)
2453 || ((bfd_get_32 (abfd, buf) & 0xffff0000) != LIS_11
2454 && is_pic_glink_stub (abfd, glink, stub_vma - glink->vma - 16)))
2455 return 0;
2456
468392fb
AM		 2457 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2458 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2459 return -1;
2460
468392fb
AM		 2461 size = count * sizeof (asymbol);
2462 p = relplt->relocation;
2463 for (i = 0; i < count; i++, p++)
2464 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2465
2466 size += sizeof (asymbol) + sizeof ("__glink");
2467
2468 if (resolv_vma)
2469 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2470
2471 s = *ret = bfd_malloc (size);
2472 if (s == NULL)
2473 return -1;
2474
2475 names = (char *) (s + count + 1 + (resolv_vma != 0));
2476 p = relplt->relocation;
2477 for (i = 0; i < count; i++, p++)
2478 {
2479 size_t len;
2480
2481 *s = **p->sym_ptr_ptr;
2482 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2483 we are defining a symbol, ensure one of them is set. */
2484 if ((s->flags & BSF_LOCAL) == 0)
2485 s->flags |= BSF_GLOBAL;
6ba2a415 2486 s->flags |= BSF_SYNTHETIC;
468392fb
AM		 2487 s->section = glink;
2488 s->value = stub_vma - glink->vma;
2489 s->name = names;
2490 s->udata.p = NULL;
2491 len = strlen ((*p->sym_ptr_ptr)->name);
2492 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2493 names += len;
2494 memcpy (names, "@plt", sizeof ("@plt"));
2495 names += sizeof ("@plt");
2496 ++s;
2497 stub_vma += 16;
2498 }
2499
2500 /* Add a symbol at the start of the glink branch table. */
86a4952b 2501 memset (s, 0, sizeof *s);
468392fb 2502 s->the_bfd = abfd;
6ba2a415 2503 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM		 2504 s->section = glink;
2505 s->value = glink_vma - glink->vma;
2506 s->name = names;
2507 memcpy (names, "__glink", sizeof ("__glink"));
2508 names += sizeof ("__glink");
2509 s++;
2510 count++;
2511
2512 if (resolv_vma)
2513 {
2514 /* Add a symbol for the glink PLT resolver. */
86a4952b 2515 memset (s, 0, sizeof *s);
468392fb 2516 s->the_bfd = abfd;
6ba2a415 2517 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM		 2518 s->section = glink;
2519 s->value = resolv_vma - glink->vma;
2520 s->name = names;
2521 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2522 names += sizeof ("__glink_PLTresolve");
2523 s++;
2524 count++;
2525 }
2526
2527 return count;
2528}
2529\f
25dbc73a
AM		 2530/* The following functions are specific to the ELF linker, while
2531 functions above are used generally. They appear in this file more
2532 or less in the order in which they are called. eg.
2533 ppc_elf_check_relocs is called early in the link process,
2534 ppc_elf_finish_dynamic_sections is one of the last functions
2535 called. */
252b5132 2536
25dbc73a
AM		 2537/* The PPC linker needs to keep track of the number of relocs that it
2538 decides to copy as dynamic relocs in check_relocs for each symbol.
2539 This is so that it can later discard them if they are found to be
2540 unnecessary. We store the information in a field extending the
2541 regular ELF linker hash table. */
ae9a127f 2542
25dbc73a 2543struct ppc_elf_dyn_relocs
252b5132 2544{
25dbc73a 2545 struct ppc_elf_dyn_relocs *next;
252b5132 2546
25dbc73a
AM		 2547 /* The input section of the reloc. */
2548 asection *sec;
252b5132 2549
25dbc73a
AM		 2550 /* Total number of relocs copied for the input section. */
2551 bfd_size_type count;
252b5132 2552
25dbc73a
AM		 2553 /* Number of pc-relative relocs copied for the input section. */
2554 bfd_size_type pc_count;
2555};
252b5132 2556
a6aa5195
AM		 2557/* Track PLT entries needed for a given symbol. We might need more
2558 than one glink entry per symbol. */
2559struct plt_entry
2560{
2561 struct plt_entry *next;
2562
2563 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2564 This field stores the offset into .got2 used to initialise the
2565 GOT pointer reg. It will always be at least 32768 (and for
2566 current gcc this is the only offset used). */
2567 bfd_vma addend;
2568
2569 /* The .got2 section. */
2570 asection *sec;
2571
2572 /* PLT refcount or offset. */
2573 union
2574 {
2575 bfd_signed_vma refcount;
2576 bfd_vma offset;
2577 } plt;
2578
2579 /* .glink stub offset. */
2580 bfd_vma glink_offset;
2581};
2582
1d483afe 2583/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM		 2584 selects those that must be copied when linking a shared library,
2585 even when the symbol is local. */
252b5132 2586
1d483afe
AM		 2587static int
2588must_be_dyn_reloc (struct bfd_link_info *info,
2589 enum elf_ppc_reloc_type r_type)
2590{
2591 switch (r_type)
2592 {
2593 default:
2594 return 1;
2595
2596 case R_PPC_REL24:
2597 case R_PPC_REL14:
2598 case R_PPC_REL14_BRTAKEN:
2599 case R_PPC_REL14_BRNTAKEN:
2600 case R_PPC_REL32:
2601 return 0;
2602
2603 case R_PPC_TPREL32:
2604 case R_PPC_TPREL16:
2605 case R_PPC_TPREL16_LO:
2606 case R_PPC_TPREL16_HI:
2607 case R_PPC_TPREL16_HA:
2608 return !info->executable;
2609 }
2610}
252b5132 2611
25dbc73a
AM		 2612/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2613 copying dynamic variables from a shared lib into an app's dynbss
2614 section, and instead use a dynamic relocation to point into the
2615 shared lib. */
2616#define ELIMINATE_COPY_RELOCS 1
252b5132 2617
25dbc73a 2618/* PPC ELF linker hash entry. */
252b5132 2619
25dbc73a
AM		 2620struct ppc_elf_link_hash_entry
2621{
2622 struct elf_link_hash_entry elf;
252b5132 2623
25dbc73a
AM		 2624 /* If this symbol is used in the linker created sections, the processor
2625 specific backend uses this field to map the field into the offset
2626 from the beginning of the section. */
2627 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 2628
25dbc73a
AM		 2629 /* Track dynamic relocs copied for this symbol. */
2630 struct ppc_elf_dyn_relocs *dyn_relocs;
252b5132 2631
25dbc73a
AM		 2632 /* Contexts in which symbol is used in the GOT (or TOC).
2633 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2634 corresponding relocs are encountered during check_relocs.
2635 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2636 indicate the corresponding GOT entry type is not needed. */
2637#define TLS_GD 1 /* GD reloc. */
2638#define TLS_LD 2 /* LD reloc. */
2639#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2640#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2641#define TLS_TLS 16 /* Any TLS reloc. */
2642#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2643 char tls_mask;
4dc4a9a5
DJ		 2644
2645 /* Nonzero if we have seen a small data relocation referring to this
2646 symbol. */
2647 unsigned char has_sda_refs;
25dbc73a 2648};
252b5132 2649
25dbc73a
AM		 2650#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2651
2652/* PPC ELF linker hash table. */
2653
2654struct ppc_elf_link_hash_table
2655{
2656 struct elf_link_hash_table elf;
2657
2658 /* Short-cuts to get to dynamic linker sections. */
2659 asection *got;
2660 asection *relgot;
d7128ce4 2661 asection *glink;
25dbc73a
AM		 2662 asection *plt;
2663 asection *relplt;
2664 asection *dynbss;
2665 asection *relbss;
2666 asection *dynsbss;
2667 asection *relsbss;
c9a2f333 2668 elf_linker_section_t sdata[2];
25dbc73a
AM		 2669 asection *sbss;
2670
016687f8
AM		 2671 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2672 asection *srelplt2;
2673
2674 /* The .got.plt section (VxWorks only)*/
2675 asection *sgotplt;
2676
1d483afe 2677 /* Shortcut to __tls_get_addr. */
25dbc73a 2678 struct elf_link_hash_entry *tls_get_addr;
252b5132 2679
016687f8
AM		 2680 /* The bfd that forced an old-style PLT. */
2681 bfd *old_bfd;
2682
25dbc73a
AM		 2683 /* TLS local dynamic got entry handling. */
2684 union {
2685 bfd_signed_vma refcount;
2686 bfd_vma offset;
2687 } tlsld_got;
252b5132 2688
d7128ce4
AM		 2689 /* Offset of PltResolve function in glink. */
2690 bfd_vma glink_pltresolve;
2691
3b36f7e6
AM		 2692 /* Size of reserved GOT entries. */
2693 unsigned int got_header_size;
2694 /* Non-zero if allocating the header left a gap. */
2695 unsigned int got_gap;
2696
4a3dc543
RS		 2697 /* The type of PLT we have chosen to use. */
2698 enum ppc_elf_plt_type plt_type;
2699
0ba07910
AM		 2700 /* Set if we should emit symbols for stubs. */
2701 unsigned int emit_stub_syms:1;
2702
9d8504b1 2703 /* True if the target system is VxWorks. */
016687f8 2704 unsigned int is_vxworks:1;
9d8504b1
PB		 2705
2706 /* The size of PLT entries. */
2707 int plt_entry_size;
2708 /* The distance between adjacent PLT slots. */
2709 int plt_slot_size;
2710 /* The size of the first PLT entry. */
2711 int plt_initial_entry_size;
016687f8
AM		 2712
2713 /* Small local sym to section mapping cache. */
2714 struct sym_sec_cache sym_sec;
25dbc73a 2715};
252b5132 2716
25dbc73a 2717/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 2718
25dbc73a
AM		 2719#define ppc_elf_hash_table(p) \
2720 ((struct ppc_elf_link_hash_table *) (p)->hash)
252b5132 2721
25dbc73a 2722/* Create an entry in a PPC ELF linker hash table. */
252b5132 2723
25dbc73a
AM		 2724static struct bfd_hash_entry *
2725ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2726 struct bfd_hash_table *table,
2727 const char *string)
252b5132 2728{
25dbc73a
AM		 2729 /* Allocate the structure if it has not already been allocated by a
2730 subclass. */
2731 if (entry == NULL)
2732 {
2733 entry = bfd_hash_allocate (table,
2734 sizeof (struct ppc_elf_link_hash_entry));
2735 if (entry == NULL)
2736 return entry;
2737 }
252b5132 2738
25dbc73a
AM		 2739 /* Call the allocation method of the superclass. */
2740 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2741 if (entry != NULL)
2742 {
2743 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2744 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2745 ppc_elf_hash_entry (entry)->tls_mask = 0;
2746 }
252b5132 2747
25dbc73a 2748 return entry;
252b5132 2749}
3dab13f6 2750
25dbc73a 2751/* Create a PPC ELF linker hash table. */
3dab13f6 2752
25dbc73a
AM		 2753static struct bfd_link_hash_table *
2754ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 2755{
25dbc73a 2756 struct ppc_elf_link_hash_table *ret;
3dab13f6 2757
25dbc73a
AM		 2758 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2759 if (ret == NULL)
2760 return NULL;
3dab13f6 2761
66eb6687
AM		 2762 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2763 ppc_elf_link_hash_newfunc,
2764 sizeof (struct ppc_elf_link_hash_entry)))
3dab13f6 2765 {
25dbc73a
AM		 2766 free (ret);
2767 return NULL;
2768 }
58111eb7 2769
a6aa5195
AM		 2770 ret->elf.init_plt_refcount.refcount = 0;
2771 ret->elf.init_plt_refcount.glist = NULL;
2772 ret->elf.init_plt_offset.offset = 0;
2773 ret->elf.init_plt_offset.glist = NULL;
2774
c9a2f333
AM		 2775 ret->sdata[0].name = ".sdata";
2776 ret->sdata[0].sym_name = "_SDA_BASE_";
2777 ret->sdata[0].bss_name = ".sbss";
2778
2779 ret->sdata[1].name = ".sdata2";
2780 ret->sdata[1].sym_name = "_SDA2_BASE_";
2781 ret->sdata[1].bss_name = ".sbss2";
2782
9d8504b1
PB		 2783 ret->plt_entry_size = 12;
2784 ret->plt_slot_size = 8;
2785 ret->plt_initial_entry_size = 72;
9d8504b1 2786
25dbc73a
AM		 2787 return &ret->elf.root;
2788}
3dab13f6 2789
9d8504b1 2790/* Create .got and the related sections. */
3dab13f6 2791
25dbc73a
AM		 2792static bfd_boolean
2793ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2794{
2795 struct ppc_elf_link_hash_table *htab;
2796 asection *s;
2797 flagword flags;
3dab13f6 2798
25dbc73a
AM		 2799 if (!_bfd_elf_create_got_section (abfd, info))
2800 return FALSE;
3dab13f6 2801
25dbc73a
AM		 2802 htab = ppc_elf_hash_table (info);
2803 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2804 if (s == NULL)
2805 abort ();
3dab13f6 2806
9d8504b1
PB		 2807 if (htab->is_vxworks)
2808 {
2809 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2810 if (!htab->sgotplt)
2811 abort ();
2812 }
2813 else
2814 {
2815 /* The powerpc .got has a blrl instruction in it. Mark it
2816 executable. */
2817 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2818 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2819 if (!bfd_set_section_flags (abfd, s, flags))
2820 return FALSE;
2821 }
3dab13f6 2822
3b36f7e6
AM		 2823 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2824 | SEC_LINKER_CREATED | SEC_READONLY);
2825 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
25dbc73a 2826 if (!htab->relgot
25dbc73a
AM		 2827 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2828 return FALSE;
3dab13f6 2829
25dbc73a
AM		 2830 return TRUE;
2831}
3dab13f6 2832
25dbc73a
AM		 2833/* We have to create .dynsbss and .rela.sbss here so that they get mapped
2834 to output sections (just like _bfd_elf_create_dynamic_sections has
2835 to create .dynbss and .rela.bss). */
3dab13f6 2836
25dbc73a
AM		 2837static bfd_boolean
2838ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2839{
2840 struct ppc_elf_link_hash_table *htab;
2841 asection *s;
2842 flagword flags;
3dab13f6 2843
25dbc73a 2844 htab = ppc_elf_hash_table (info);
3dab13f6 2845
25dbc73a
AM		 2846 if (htab->got == NULL
2847 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM		 2848 return FALSE;
2849
25dbc73a
AM		 2850 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2851 return FALSE;
3dab13f6 2852
d7128ce4
AM		 2853 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2854 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2855
2856 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2857 htab->glink = s;
2858 if (s == NULL
2859 || !bfd_set_section_alignment (abfd, s, 4))
2860 return FALSE;
3dab13f6 2861
25dbc73a 2862 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
3b36f7e6
AM		 2863 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2864 SEC_ALLOC | SEC_LINKER_CREATED);
2865 htab->dynsbss = s;
3496cb2a 2866 if (s == NULL)
25dbc73a 2867 return FALSE;
3dab13f6 2868
25dbc73a
AM		 2869 if (! info->shared)
2870 {
2871 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
d7128ce4 2872 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 2873 htab->relsbss = s;
25dbc73a 2874 if (s == NULL
25dbc73a
AM		 2875 || ! bfd_set_section_alignment (abfd, s, 2))
2876 return FALSE;
2877 }
3dab13f6 2878
711de32c
RS		 2879 if (htab->is_vxworks
2880 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2881 return FALSE;
9d8504b1 2882
25dbc73a
AM		 2883 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2884 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2885 if (s == NULL)
2886 abort ();
3dab13f6 2887
3b36f7e6 2888 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS		 2889 if (htab->plt_type == PLT_VXWORKS)
2890 /* The VxWorks PLT is a loaded section with contents. */
2891 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM		 2892 return bfd_set_section_flags (abfd, s, flags);
2893}
3dab13f6 2894
25dbc73a 2895/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 2896
25dbc73a 2897static void
fcfa13d2 2898ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM		 2899 struct elf_link_hash_entry *dir,
2900 struct elf_link_hash_entry *ind)
2901{
2902 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 2903
25dbc73a
AM		 2904 edir = (struct ppc_elf_link_hash_entry *) dir;
2905 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 2906
25dbc73a
AM		 2907 if (eind->dyn_relocs != NULL)
2908 {
2909 if (edir->dyn_relocs != NULL)
3dab13f6 2910 {
25dbc73a
AM		 2911 struct ppc_elf_dyn_relocs **pp;
2912 struct ppc_elf_dyn_relocs *p;
3dab13f6 2913
fcfa13d2 2914 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM		 2915 list. Merge any entries against the same section. */
2916 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 2917 {
25dbc73a
AM		 2918 struct ppc_elf_dyn_relocs *q;
2919
2920 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2921 if (q->sec == p->sec)
2922 {
2923 q->pc_count += p->pc_count;
2924 q->count += p->count;
2925 *pp = p->next;
2926 break;
2927 }
2928 if (q == NULL)
2929 pp = &p->next;
3dab13f6 2930 }
25dbc73a 2931 *pp = edir->dyn_relocs;
3dab13f6 2932 }
25dbc73a
AM		 2933
2934 edir->dyn_relocs = eind->dyn_relocs;
2935 eind->dyn_relocs = NULL;
3dab13f6 2936 }
3dab13f6 2937
25dbc73a 2938 edir->tls_mask |= eind->tls_mask;
4dc4a9a5 2939 edir->has_sda_refs |= eind->has_sda_refs;
3dab13f6 2940
a6aa5195
AM		 2941 /* If called to transfer flags for a weakdef during processing
2942 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2943 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2944 if (!(ELIMINATE_COPY_RELOCS
2945 && eind->elf.root.type != bfd_link_hash_indirect
2946 && edir->elf.dynamic_adjusted))
2947 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2948
2949 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2950 edir->elf.ref_regular |= eind->elf.ref_regular;
2951 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2952 edir->elf.needs_plt |= eind->elf.needs_plt;
0eb4a168 2953 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
a6aa5195
AM		 2954
2955 /* If we were called to copy over info for a weak sym, that's all. */
2956 if (eind->elf.root.type != bfd_link_hash_indirect)
2957 return;
2958
2959 /* Copy over the GOT refcount entries that we may have already seen to
2960 the symbol which just became indirect. */
fcfa13d2
AM		 2961 edir->elf.got.refcount += eind->elf.got.refcount;
2962 eind->elf.got.refcount = 0;
a6aa5195
AM		 2963
2964 /* And plt entries. */
2965 if (eind->elf.plt.plist != NULL)
2966 {
2967 if (edir->elf.plt.plist != NULL)
2968 {
2969 struct plt_entry **entp;
2970 struct plt_entry *ent;
2971
2972 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2973 {
2974 struct plt_entry *dent;
2975
2976 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2977 if (dent->sec == ent->sec && dent->addend == ent->addend)
2978 {
2979 dent->plt.refcount += ent->plt.refcount;
2980 *entp = ent->next;
2981 break;
2982 }
2983 if (dent == NULL)
2984 entp = &ent->next;
2985 }
2986 *entp = edir->elf.plt.plist;
2987 }
2988
2989 edir->elf.plt.plist = eind->elf.plt.plist;
2990 eind->elf.plt.plist = NULL;
2991 }
2992
fcfa13d2 2993 if (eind->elf.dynindx != -1)
25dbc73a 2994 {
fcfa13d2
AM		 2995 if (edir->elf.dynindx != -1)
2996 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2997 edir->elf.dynstr_index);
a6aa5195
AM		 2998 edir->elf.dynindx = eind->elf.dynindx;
2999 edir->elf.dynstr_index = eind->elf.dynstr_index;
3000 eind->elf.dynindx = -1;
3001 eind->elf.dynstr_index = 0;
25dbc73a 3002 }
25dbc73a 3003}
3dab13f6 3004
25dbc73a
AM		 3005/* Hook called by the linker routine which adds symbols from an object
3006 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3007
25dbc73a
AM		 3008static bfd_boolean
3009ppc_elf_add_symbol_hook (bfd *abfd,
3010 struct bfd_link_info *info,
3011 Elf_Internal_Sym *sym,
3012 const char **namep ATTRIBUTE_UNUSED,
3013 flagword *flagsp ATTRIBUTE_UNUSED,
3014 asection **secp,
3015 bfd_vma *valp)
3016{
3017 if (sym->st_shndx == SHN_COMMON
3018 && !info->relocatable
0c8d6e5c
AM		 3019 && is_ppc_elf (info->output_bfd)
3020 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM		 3021 {
3022 /* Common symbols less than or equal to -G nn bytes are automatically
3023 put into .sbss. */
3024 struct ppc_elf_link_hash_table *htab;
3dab13f6 3025
25dbc73a
AM		 3026 htab = ppc_elf_hash_table (info);
3027 if (htab->sbss == NULL)
3028 {
644285ef 3029 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3030
644285ef
AM		 3031 if (!htab->elf.dynobj)
3032 htab->elf.dynobj = abfd;
3033
3496cb2a
L		 3034 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3035 ".sbss",
3036 flags);
3037 if (htab->sbss == NULL)
25dbc73a 3038 return FALSE;
3dab13f6 3039 }
3dab13f6 3040
25dbc73a
AM		 3041 *secp = htab->sbss;
3042 *valp = sym->st_size;
3043 }
3dab13f6 3044
25dbc73a 3045 return TRUE;
3dab13f6
AM		 3046}
3047\f
046183de
AM		 3048static bfd_boolean
3049create_sdata_sym (struct ppc_elf_link_hash_table *htab,
3050 elf_linker_section_t *lsect)
3051{
3052 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3053 TRUE, FALSE, TRUE);
3054 if (lsect->sym == NULL)
3055 return FALSE;
3056 if (lsect->sym->root.type == bfd_link_hash_new)
3057 lsect->sym->non_elf = 0;
3058 lsect->sym->ref_regular = 1;
3059 return TRUE;
3060}
3061
c9a2f333 3062/* Create a special linker section. */
25dbc73a 3063
c9a2f333 3064static bfd_boolean
55fd94b0
AM		 3065ppc_elf_create_linker_section (bfd *abfd,
3066 struct bfd_link_info *info,
c9a2f333
AM		 3067 flagword flags,
3068 elf_linker_section_t *lsect)
252b5132 3069{
58111eb7 3070 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 3071 asection *s;
58111eb7 3072
c9a2f333
AM		 3073 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3074 | SEC_LINKER_CREATED);
58111eb7
AM		 3075
3076 /* Record the first bfd that needs the special sections. */
3077 if (!htab->elf.dynobj)
3078 htab->elf.dynobj = abfd;
3079
3496cb2a
L		 3080 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3081 lsect->name,
3082 flags);
76750a2f 3083 if (s == NULL
76750a2f 3084 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 3085 return FALSE;
76750a2f 3086 lsect->section = s;
58111eb7 3087
046183de 3088 return create_sdata_sym (htab, lsect);
252b5132 3089}
252b5132 3090
25dbc73a
AM		 3091/* Find a linker generated pointer with a given addend and type. */
3092
3093static elf_linker_section_pointers_t *
3094elf_find_pointer_linker_section
3095 (elf_linker_section_pointers_t *linker_pointers,
3096 bfd_vma addend,
3097 elf_linker_section_t *lsect)
252b5132 3098{
25dbc73a
AM		 3099 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3100 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3101 return linker_pointers;
252b5132 3102
25dbc73a
AM		 3103 return NULL;
3104}
3105
3106/* Allocate a pointer to live in a linker created section. */
3107
3108static bfd_boolean
3109elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM		 3110 elf_linker_section_t *lsect,
3111 struct elf_link_hash_entry *h,
3112 const Elf_Internal_Rela *rel)
3113{
3114 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3115 elf_linker_section_pointers_t *linker_section_ptr;
3116 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3117 bfd_size_type amt;
3118
3119 BFD_ASSERT (lsect != NULL);
3120
3121 /* Is this a global symbol? */
3122 if (h != NULL)
3123 {
3124 struct ppc_elf_link_hash_entry *eh;
3125
3126 /* Has this symbol already been allocated? If so, our work is done. */
3127 eh = (struct ppc_elf_link_hash_entry *) h;
3128 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3129 rel->r_addend,
3130 lsect))
3131 return TRUE;
3132
3133 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM		 3134 }
3135 else
3136 {
0c8d6e5c 3137 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3138
25dbc73a
AM		 3139 /* Allocation of a pointer to a local symbol. */
3140 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3141
3142 /* Allocate a table to hold the local symbols if first time. */
3143 if (!ptr)
3144 {
0ffa91dd 3145 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM		 3146
3147 amt = num_symbols;
3148 amt *= sizeof (elf_linker_section_pointers_t *);
3149 ptr = bfd_zalloc (abfd, amt);
3150
3151 if (!ptr)
3152 return FALSE;
3153
3154 elf_local_ptr_offsets (abfd) = ptr;
3155 }
3156
3157 /* Has this symbol already been allocated? If so, our work is done. */
3158 if (elf_find_pointer_linker_section (ptr[r_symndx],
3159 rel->r_addend,
3160 lsect))
3161 return TRUE;
252b5132 3162
25dbc73a 3163 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3164 }
41fcb14e 3165
25dbc73a
AM		 3166 /* Allocate space for a pointer in the linker section, and allocate
3167 a new pointer record from internal memory. */
3168 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3169 amt = sizeof (elf_linker_section_pointers_t);
3170 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3171
25dbc73a 3172 if (!linker_section_ptr)
7619e7c7 3173 return FALSE;
41fcb14e 3174
25dbc73a
AM		 3175 linker_section_ptr->next = *ptr_linker_section_ptr;
3176 linker_section_ptr->addend = rel->r_addend;
3177 linker_section_ptr->lsect = lsect;
25dbc73a 3178 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3179
25dbc73a
AM		 3180 linker_section_ptr->offset = lsect->section->size;
3181 lsect->section->size += 4;
7619e7c7 3182
25dbc73a
AM		 3183#ifdef DEBUG
3184 fprintf (stderr,
3185 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3186 lsect->name, (long) linker_section_ptr->offset,
3187 (long) lsect->section->size);
3188#endif
7619e7c7
AM		 3189
3190 return TRUE;
41fcb14e
AM		 3191}
3192
b34976b6 3193static bfd_boolean
25dbc73a
AM		 3194update_local_sym_info (bfd *abfd,
3195 Elf_Internal_Shdr *symtab_hdr,
3196 unsigned long r_symndx,
3197 int tls_type)
252b5132 3198{
25dbc73a
AM		 3199 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3200 char *local_got_tls_masks;
252b5132 3201
25dbc73a 3202 if (local_got_refcounts == NULL)
252b5132 3203 {
25dbc73a
AM		 3204 bfd_size_type size = symtab_hdr->sh_info;
3205
3206 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
3207 local_got_refcounts = bfd_zalloc (abfd, size);
3208 if (local_got_refcounts == NULL)
b34976b6 3209 return FALSE;
25dbc73a 3210 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3211 }
41fcb14e 3212
25dbc73a
AM		 3213 local_got_refcounts[r_symndx] += 1;
3214 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
3215 local_got_tls_masks[r_symndx] |= tls_type;
3216 return TRUE;
3217}
41fcb14e 3218
a6aa5195
AM		 3219static bfd_boolean
3220update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
3221 asection *sec, bfd_vma addend)
3222{
3223 struct plt_entry *ent;
3224
3225 if (addend < 32768)
3226 sec = NULL;
3227 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3228 if (ent->sec == sec && ent->addend == addend)
3229 break;
3230 if (ent == NULL)
3231 {
3232 bfd_size_type amt = sizeof (*ent);
3233 ent = bfd_alloc (abfd, amt);
3234 if (ent == NULL)
3235 return FALSE;
3236 ent->next = h->plt.plist;
3237 ent->sec = sec;
3238 ent->addend = addend;
3239 ent->plt.refcount = 0;
3240 h->plt.plist = ent;
3241 }
3242 ent->plt.refcount += 1;
3243 return TRUE;
3244}
3245
3246static struct plt_entry *
3247find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
3248{
3249 struct plt_entry *ent;
3250
3251 if (addend < 32768)
3252 sec = NULL;
3253 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3254 if (ent->sec == sec && ent->addend == addend)
3255 break;
3256 return ent;
3257}
3258
25dbc73a
AM		 3259static void
3260bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3261{
3262 (*_bfd_error_handler)
3263 (_("%B: relocation %s cannot be used when making a shared object"),
3264 abfd,
3265 ppc_elf_howto_table[r_type]->name);
3266 bfd_set_error (bfd_error_bad_value);
252b5132
RH		 3267}
3268
25dbc73a
AM		 3269/* Look through the relocs for a section during the first phase, and
3270 allocate space in the global offset table or procedure linkage
3271 table. */
252b5132 3272
b34976b6 3273static bfd_boolean
25dbc73a
AM		 3274ppc_elf_check_relocs (bfd *abfd,
3275 struct bfd_link_info *info,
3276 asection *sec,
3277 const Elf_Internal_Rela *relocs)
252b5132 3278{
7619e7c7 3279 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM		 3280 Elf_Internal_Shdr *symtab_hdr;
3281 struct elf_link_hash_entry **sym_hashes;
3282 const Elf_Internal_Rela *rel;
3283 const Elf_Internal_Rela *rel_end;
a6aa5195 3284 asection *got2, *sreloc;
25dbc73a
AM		 3285
3286 if (info->relocatable)
3287 return TRUE;
252b5132 3288
c87b5a93
AM		 3289 /* Don't do anything special with non-loaded, non-alloced sections.
3290 In particular, any relocs in such sections should not affect GOT
3291 and PLT reference counting (ie. we don't allow them to create GOT
3292 or PLT entries), there's no possibility or desire to optimize TLS
3293 relocs, and there's not much point in propagating relocs to shared
3294 libs that the dynamic linker won't relocate. */
3295 if ((sec->flags & SEC_ALLOC) == 0)
3296 return TRUE;
3297
252b5132 3298#ifdef DEBUG
25dbc73a
AM		 3299 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3300 sec, abfd);
252b5132
RH		 3301#endif
3302
0c8d6e5c 3303 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3304
25dbc73a
AM		 3305 /* Initialize howto table if not already done. */
3306 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3307 ppc_elf_howto_init ();
3308
7619e7c7 3309 htab = ppc_elf_hash_table (info);
0ffa91dd 3310 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 3311 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3312 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM		 3313 sreloc = NULL;
3314
3315 rel_end = relocs + sec->reloc_count;
3316 for (rel = relocs; rel < rel_end; rel++)
3317 {
3318 unsigned long r_symndx;
3319 enum elf_ppc_reloc_type r_type;
3320 struct elf_link_hash_entry *h;
3321 int tls_type = 0;
3322
3323 r_symndx = ELF32_R_SYM (rel->r_info);
3324 if (r_symndx < symtab_hdr->sh_info)
3325 h = NULL;
3326 else
973a3492
L		 3327 {
3328 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3329 while (h->root.type == bfd_link_hash_indirect
3330 || h->root.type == bfd_link_hash_warning)
3331 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3332 }
25dbc73a
AM		 3333
3334 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3335 This shows up in particular in an R_PPC_ADDR32 in the eabi
3336 startup code. */
3b36f7e6
AM		 3337 if (h != NULL
3338 && htab->got == NULL
3339 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3340 {
3b36f7e6
AM		 3341 if (htab->elf.dynobj == NULL)
3342 htab->elf.dynobj = abfd;
3343 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3344 return FALSE;
3345 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3346 }
252b5132 3347
25dbc73a
AM		 3348 r_type = ELF32_R_TYPE (rel->r_info);
3349 switch (r_type)
3350 {
3351 case R_PPC_GOT_TLSLD16:
3352 case R_PPC_GOT_TLSLD16_LO:
3353 case R_PPC_GOT_TLSLD16_HI:
3354 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM		 3355 tls_type = TLS_TLS | TLS_LD;
3356 goto dogottls;
252b5132 3357
25dbc73a
AM		 3358 case R_PPC_GOT_TLSGD16:
3359 case R_PPC_GOT_TLSGD16_LO:
3360 case R_PPC_GOT_TLSGD16_HI:
3361 case R_PPC_GOT_TLSGD16_HA:
3362 tls_type = TLS_TLS | TLS_GD;
3363 goto dogottls;
3364
3365 case R_PPC_GOT_TPREL16:
3366 case R_PPC_GOT_TPREL16_LO:
3367 case R_PPC_GOT_TPREL16_HI:
3368 case R_PPC_GOT_TPREL16_HA:
1d483afe 3369 if (!info->executable)
25dbc73a
AM		 3370 info->flags |= DF_STATIC_TLS;
3371 tls_type = TLS_TLS | TLS_TPREL;
3372 goto dogottls;
3373
3374 case R_PPC_GOT_DTPREL16:
3375 case R_PPC_GOT_DTPREL16_LO:
3376 case R_PPC_GOT_DTPREL16_HI:
3377 case R_PPC_GOT_DTPREL16_HA:
3378 tls_type = TLS_TLS | TLS_DTPREL;
3379 dogottls:
3380 sec->has_tls_reloc = 1;
3381 /* Fall thru */
252b5132 3382
25dbc73a
AM		 3383 /* GOT16 relocations */
3384 case R_PPC_GOT16:
3385 case R_PPC_GOT16_LO:
3386 case R_PPC_GOT16_HI:
3387 case R_PPC_GOT16_HA:
3388 /* This symbol requires a global offset table entry. */
3389 if (htab->got == NULL)
3390 {
3391 if (htab->elf.dynobj == NULL)
3392 htab->elf.dynobj = abfd;
3393 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3394 return FALSE;
3395 }
3396 if (h != NULL)
3397 {
3398 h->got.refcount += 1;
3399 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3400 }
3401 else
3402 /* This is a global offset table entry for a local symbol. */
3403 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3404 return FALSE;
3405 break;
252b5132 3406
25dbc73a
AM		 3407 /* Indirect .sdata relocation. */
3408 case R_PPC_EMB_SDAI16:
3409 if (info->shared)
3410 {
3411 bad_shared_reloc (abfd, r_type);
3412 return FALSE;
3413 }
c9a2f333
AM		 3414 if (htab->sdata[0].section == NULL
3415 && !ppc_elf_create_linker_section (abfd, info, 0,
3416 &htab->sdata[0]))
3417 return FALSE;
76750a2f
AM		 3418 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3419 h, rel))
25dbc73a 3420 return FALSE;
046183de
AM		 3421 if (h != NULL)
3422 {
3423 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3424 h->non_got_ref = TRUE;
3425 }
25dbc73a 3426 break;
252b5132 3427
25dbc73a
AM		 3428 /* Indirect .sdata2 relocation. */
3429 case R_PPC_EMB_SDA2I16:
3430 if (info->shared)
3431 {
3432 bad_shared_reloc (abfd, r_type);
3433 return FALSE;
3434 }
c9a2f333
AM		 3435 if (htab->sdata[1].section == NULL
3436 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3437 &htab->sdata[1]))
3438 return FALSE;
76750a2f
AM		 3439 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3440 h, rel))
25dbc73a 3441 return FALSE;
046183de
AM		 3442 if (h != NULL)
3443 {
3444 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3445 h->non_got_ref = TRUE;
3446 }
25dbc73a 3447 break;
252b5132 3448
25dbc73a 3449 case R_PPC_SDAREL16:
046183de
AM		 3450 if (info->shared)
3451 {
3452 bad_shared_reloc (abfd, r_type);
3453 return FALSE;
3454 }
3455 if (htab->sdata[0].sym == NULL
3456 && !create_sdata_sym (htab, &htab->sdata[0]))
3457 return FALSE;
3458 if (h != NULL)
3459 {
3460 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3461 h->non_got_ref = TRUE;
3462 }
3463 break;
3464
25dbc73a 3465 case R_PPC_EMB_SDA2REL:
046183de
AM		 3466 if (info->shared)
3467 {
3468 bad_shared_reloc (abfd, r_type);
3469 return FALSE;
3470 }
3471 if (htab->sdata[1].sym == NULL
3472 && !create_sdata_sym (htab, &htab->sdata[1]))
3473 return FALSE;
3474 if (h != NULL)
3475 {
3476 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3477 h->non_got_ref = TRUE;
3478 }
3479 break;
3480
25dbc73a
AM		 3481 case R_PPC_EMB_SDA21:
3482 case R_PPC_EMB_RELSDA:
046183de
AM		 3483 if (info->shared)
3484 {
3485 bad_shared_reloc (abfd, r_type);
3486 return FALSE;
3487 }
3488 if (htab->sdata[0].sym == NULL
3489 && !create_sdata_sym (htab, &htab->sdata[0]))
3490 return FALSE;
3491 if (htab->sdata[1].sym == NULL
3492 && !create_sdata_sym (htab, &htab->sdata[1]))
3493 return FALSE;
3494 if (h != NULL)
3495 {
3496 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3497 h->non_got_ref = TRUE;
3498 }
3499 break;
3500
25dbc73a
AM		 3501 case R_PPC_EMB_NADDR32:
3502 case R_PPC_EMB_NADDR16:
3503 case R_PPC_EMB_NADDR16_LO:
3504 case R_PPC_EMB_NADDR16_HI:
3505 case R_PPC_EMB_NADDR16_HA:
3506 if (info->shared)
3507 {
3508 bad_shared_reloc (abfd, r_type);
3509 return FALSE;
3510 }
4dc4a9a5 3511 if (h != NULL)
046183de 3512 h->non_got_ref = TRUE;
25dbc73a 3513 break;
252b5132 3514
25dbc73a
AM		 3515 case R_PPC_PLT32:
3516 case R_PPC_PLTREL24:
3517 case R_PPC_PLTREL32:
3518 case R_PPC_PLT16_LO:
3519 case R_PPC_PLT16_HI:
3520 case R_PPC_PLT16_HA:
3521#ifdef DEBUG
3522 fprintf (stderr, "Reloc requires a PLT entry\n");
3523#endif
3524 /* This symbol requires a procedure linkage table entry. We
3525 actually build the entry in finish_dynamic_symbol,
3526 because this might be a case of linking PIC code without
3527 linking in any dynamic objects, in which case we don't
3528 need to generate a procedure linkage table after all. */
7619e7c7 3529
25dbc73a
AM		 3530 if (h == NULL)
3531 {
3532 /* It does not make sense to have a procedure linkage
3533 table entry for a local symbol. */
3534 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3535 "local symbol"),
3536 abfd,
3537 sec,
3538 (long) rel->r_offset,
3539 ppc_elf_howto_table[r_type]->name);
3540 bfd_set_error (bfd_error_bad_value);
3541 return FALSE;
3542 }
a6aa5195
AM		 3543 else
3544 {
016687f8 3545 bfd_vma addend = 0;
ee05f2fe 3546
016687f8
AM		 3547 if (r_type == R_PPC_PLTREL24)
3548 {
3549 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3550 addend = rel->r_addend;
3551 }
a6aa5195
AM		 3552 h->needs_plt = 1;
3553 if (!update_plt_info (abfd, h, got2, addend))
3554 return FALSE;
3555 }
25dbc73a 3556 break;
ee05f2fe 3557
25dbc73a
AM		 3558 /* The following relocations don't need to propagate the
3559 relocation if linking a shared object since they are
3560 section relative. */
3561 case R_PPC_SECTOFF:
3562 case R_PPC_SECTOFF_LO:
3563 case R_PPC_SECTOFF_HI:
3564 case R_PPC_SECTOFF_HA:
3565 case R_PPC_DTPREL16:
3566 case R_PPC_DTPREL16_LO:
3567 case R_PPC_DTPREL16_HI:
3568 case R_PPC_DTPREL16_HA:
3569 case R_PPC_TOC16:
3570 break;
252b5132 3571
d7128ce4
AM		 3572 case R_PPC_REL16:
3573 case R_PPC_REL16_LO:
3574 case R_PPC_REL16_HI:
3575 case R_PPC_REL16_HA:
016687f8 3576 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM		 3577 break;
3578
a6aa5195 3579 /* These are just markers. */
25dbc73a
AM		 3580 case R_PPC_TLS:
3581 case R_PPC_EMB_MRKREF:
3582 case R_PPC_NONE:
3583 case R_PPC_max:
3584 break;
252b5132 3585
25dbc73a
AM		 3586 /* These should only appear in dynamic objects. */
3587 case R_PPC_COPY:
3588 case R_PPC_GLOB_DAT:
3589 case R_PPC_JMP_SLOT:
3590 case R_PPC_RELATIVE:
3591 break;
252b5132 3592
25dbc73a
AM		 3593 /* These aren't handled yet. We'll report an error later. */
3594 case R_PPC_ADDR30:
3595 case R_PPC_EMB_RELSEC16:
3596 case R_PPC_EMB_RELST_LO:
3597 case R_PPC_EMB_RELST_HI:
3598 case R_PPC_EMB_RELST_HA:
3599 case R_PPC_EMB_BIT_FLD:
3600 break;
252b5132 3601
25dbc73a
AM		 3602 /* This refers only to functions defined in the shared library. */
3603 case R_PPC_LOCAL24PC:
4a3dc543 3604 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM		 3605 {
3606 htab->plt_type = PLT_OLD;
3607 htab->old_bfd = abfd;
3608 }
25dbc73a 3609 break;
252b5132 3610
25dbc73a
AM		 3611 /* This relocation describes the C++ object vtable hierarchy.
3612 Reconstruct it for later use during GC. */
3613 case R_PPC_GNU_VTINHERIT:
3614 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3615 return FALSE;
3616 break;
252b5132 3617
25dbc73a
AM		 3618 /* This relocation describes which C++ vtable entries are actually
3619 used. Record for later use during GC. */
3620 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB		 3621 BFD_ASSERT (h != NULL);
3622 if (h != NULL
3623 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM		 3624 return FALSE;
3625 break;
252b5132 3626
25dbc73a
AM		 3627 /* We shouldn't really be seeing these. */
3628 case R_PPC_TPREL32:
1d483afe
AM		 3629 case R_PPC_TPREL16:
3630 case R_PPC_TPREL16_LO:
3631 case R_PPC_TPREL16_HI:
3632 case R_PPC_TPREL16_HA:
3633 if (!info->executable)
25dbc73a
AM		 3634 info->flags |= DF_STATIC_TLS;
3635 goto dodyn;
252b5132 3636
25dbc73a
AM		 3637 /* Nor these. */
3638 case R_PPC_DTPMOD32:
3639 case R_PPC_DTPREL32:
3640 goto dodyn;
252b5132 3641
9edfd1af
AM		 3642 case R_PPC_REL32:
3643 if (h == NULL
3644 && got2 != NULL
3645 && (sec->flags & SEC_CODE) != 0
3646 && (info->shared || info->pie)
4a3dc543 3647 && htab->plt_type == PLT_UNSET)
9edfd1af
AM		 3648 {
3649 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3650 the start of a function, which assembles to a REL32
3651 reference to .got2. If we detect one of these, then
3652 force the old PLT layout because the linker cannot
3653 reliably deduce the GOT pointer value needed for
3654 PLT call stubs. */
3655 asection *s;
3656
3657 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3658 r_symndx);
3659 if (s == got2)
016687f8
AM		 3660 {
3661 htab->plt_type = PLT_OLD;
3662 htab->old_bfd = abfd;
3663 }
9edfd1af 3664 }
7123df0e 3665 if (h == NULL || h == htab->elf.hgot)
fd38b44c 3666 break;
625af618
AM		 3667 /* fall through */
3668
3669 case R_PPC_ADDR32:
3670 case R_PPC_ADDR16:
3671 case R_PPC_ADDR16_LO:
3672 case R_PPC_ADDR16_HI:
3673 case R_PPC_ADDR16_HA:
3674 case R_PPC_UADDR32:
3675 case R_PPC_UADDR16:
3676 if (h != NULL && !info->shared)
3677 {
3678 /* We may need a plt entry if the symbol turns out to be
3679 a function defined in a dynamic object. */
3680 if (!update_plt_info (abfd, h, NULL, 0))
3681 return FALSE;
3682
3683 /* We may need a copy reloc too. */
3684 h->non_got_ref = 1;
3685 h->pointer_equality_needed = 1;
3686 }
3687 goto dodyn;
9edfd1af 3688
25dbc73a
AM		 3689 case R_PPC_REL24:
3690 case R_PPC_REL14:
3691 case R_PPC_REL14_BRTAKEN:
3692 case R_PPC_REL14_BRNTAKEN:
d7128ce4 3693 if (h == NULL)
25dbc73a 3694 break;
7123df0e 3695 if (h == htab->elf.hgot)
d7128ce4 3696 {
7123df0e 3697 if (htab->plt_type == PLT_UNSET)
016687f8
AM		 3698 {
3699 htab->plt_type = PLT_OLD;
3700 htab->old_bfd = abfd;
3701 }
d7128ce4
AM		 3702 break;
3703 }
25dbc73a 3704 /* fall through */
ee05f2fe 3705
25dbc73a 3706 case R_PPC_ADDR24:
25dbc73a
AM		 3707 case R_PPC_ADDR14:
3708 case R_PPC_ADDR14_BRTAKEN:
3709 case R_PPC_ADDR14_BRNTAKEN:
25dbc73a
AM		 3710 if (h != NULL && !info->shared)
3711 {
3712 /* We may need a plt entry if the symbol turns out to be
3713 a function defined in a dynamic object. */
a6aa5195
AM		 3714 if (!update_plt_info (abfd, h, NULL, 0))
3715 return FALSE;
625af618 3716 break;
25dbc73a 3717 }
7619e7c7 3718
25dbc73a
AM		 3719 dodyn:
3720 /* If we are creating a shared library, and this is a reloc
3721 against a global symbol, or a non PC relative reloc
3722 against a local symbol, then we need to copy the reloc
3723 into the shared library. However, if we are linking with
3724 -Bsymbolic, we do not need to copy a reloc against a
3725 global symbol which is defined in an object we are
3726 including in the link (i.e., DEF_REGULAR is set). At
3727 this point we have not seen all the input files, so it is
3728 possible that DEF_REGULAR is not set now but will be set
3729 later (it is never cleared). In case of a weak definition,
3730 DEF_REGULAR may be cleared later by a strong definition in
3731 a shared library. We account for that possibility below by
3732 storing information in the dyn_relocs field of the hash
3733 table entry. A similar situation occurs when creating
3734 shared libraries and symbol visibility changes render the
3735 symbol local.
7619e7c7 3736
25dbc73a
AM		 3737 If on the other hand, we are creating an executable, we
3738 may need to keep relocations for symbols satisfied by a
3739 dynamic library if we manage to avoid copy relocs for the
3740 symbol. */
3741 if ((info->shared
1d483afe 3742 && (must_be_dyn_reloc (info, r_type)
25dbc73a
AM		 3743 || (h != NULL
3744 && (! info->symbolic
3745 || h->root.type == bfd_link_hash_defweak
3746 || !h->def_regular))))
3747 || (ELIMINATE_COPY_RELOCS
3748 && !info->shared
25dbc73a
AM		 3749 && h != NULL
3750 && (h->root.type == bfd_link_hash_defweak
3751 || !h->def_regular)))
3752 {
3753 struct ppc_elf_dyn_relocs *p;
3754 struct ppc_elf_dyn_relocs **head;
7619e7c7 3755
25dbc73a
AM		 3756#ifdef DEBUG
3757 fprintf (stderr,
3758 "ppc_elf_check_relocs needs to "
3759 "create relocation for %s\n",
3760 (h && h->root.root.string
3761 ? h->root.root.string : "<unknown>"));
3762#endif
3763 if (sreloc == NULL)
3764 {
3765 const char *name;
7619e7c7 3766
25dbc73a
AM		 3767 name = (bfd_elf_string_from_elf_section
3768 (abfd,
3769 elf_elfheader (abfd)->e_shstrndx,
3770 elf_section_data (sec)->rel_hdr.sh_name));
3771 if (name == NULL)
3772 return FALSE;
7619e7c7 3773
0112cd26 3774 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
25dbc73a
AM		 3775 && strcmp (bfd_get_section_name (abfd, sec),
3776 name + 5) == 0);
7619e7c7 3777
c9a2f333
AM		 3778 if (htab->elf.dynobj == NULL)
3779 htab->elf.dynobj = abfd;
25dbc73a
AM		 3780 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3781 if (sreloc == NULL)
3782 {
3783 flagword flags;
7619e7c7 3784
25dbc73a 3785 flags = (SEC_HAS_CONTENTS | SEC_READONLY
c87b5a93
AM		 3786 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3787 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 3788 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3789 name,
3790 flags);
25dbc73a 3791 if (sreloc == NULL
25dbc73a
AM		 3792 || ! bfd_set_section_alignment (htab->elf.dynobj,
3793 sreloc, 2))
3794 return FALSE;
3795 }
3796 elf_section_data (sec)->sreloc = sreloc;
3797 }
7619e7c7 3798
25dbc73a
AM		 3799 /* If this is a global symbol, we count the number of
3800 relocations we need for this symbol. */
3801 if (h != NULL)
3802 {
3803 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3804 }
3805 else
3806 {
3807 /* Track dynamic relocs needed for local syms too.
3808 We really need local syms available to do this
3809 easily. Oh well. */
7619e7c7 3810
25dbc73a 3811 asection *s;
6edfbbad
DJ		 3812 void *vpp;
3813
25dbc73a
AM		 3814 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3815 sec, r_symndx);
3816 if (s == NULL)
3817 return FALSE;
7fce784e 3818
6edfbbad
DJ		 3819 vpp = &elf_section_data (s)->local_dynrel;
3820 head = (struct ppc_elf_dyn_relocs **) vpp;
25dbc73a 3821 }
7fce784e 3822
25dbc73a
AM		 3823 p = *head;
3824 if (p == NULL || p->sec != sec)
3825 {
3826 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3827 if (p == NULL)
3828 return FALSE;
3829 p->next = *head;
3830 *head = p;
3831 p->sec = sec;
3832 p->count = 0;
3833 p->pc_count = 0;
3834 }
3835
3836 p->count += 1;
1d483afe 3837 if (!must_be_dyn_reloc (info, r_type))
25dbc73a 3838 p->pc_count += 1;
7619e7c7 3839 }
25dbc73a
AM		 3840
3841 break;
7619e7c7
AM		 3842 }
3843 }
ee05f2fe 3844
25dbc73a
AM		 3845 return TRUE;
3846}
3847\f
34c8bcba
JM		 3848
3849/* Merge object attributes from IBFD into OBFD. Raise an error if
3850 there are conflicting attributes. */
3851static bfd_boolean
3852ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
3853{
c6e65352
DJ		 3854 obj_attribute *in_attr, *in_attrs;
3855 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM		 3856
3857 if (!elf_known_obj_attributes_proc (obfd)[0].i)
3858 {
3859 /* This is the first object. Copy the attributes. */
3860 _bfd_elf_copy_obj_attributes (ibfd, obfd);
3861
3862 /* Use the Tag_null value to indicate the attributes have been
3863 initialized. */
3864 elf_known_obj_attributes_proc (obfd)[0].i = 1;
3865
3866 return TRUE;
3867 }
3868
c6e65352
DJ		 3869 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3870 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3871
34c8bcba
JM		 3872 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3873 non-conflicting ones. */
c6e65352
DJ		 3874 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
3875 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
3876 if (in_attr->i != out_attr->i)
34c8bcba 3877 {
c6e65352
DJ		 3878 out_attr->type = 1;
3879 if (out_attr->i == 0)
3880 out_attr->i = in_attr->i;
3881 else if (in_attr->i == 0)
34c8bcba 3882 ;
c6e65352 3883 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM		 3884 _bfd_error_handler
3885 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3c7b9897
AM		 3886 else if (out_attr->i == 1 && in_attr->i == 3)
3887 _bfd_error_handler
3888 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3889 obfd, ibfd);
3890 else if (out_attr->i == 3 && in_attr->i == 1)
3891 _bfd_error_handler
3892 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3893 ibfd, obfd);
3894 else if (out_attr->i == 3 && in_attr->i == 2)
3895 _bfd_error_handler
3896 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3897 ibfd, obfd);
3898 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
34c8bcba
JM		 3899 _bfd_error_handler
3900 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3c7b9897 3901 else if (in_attr->i > 3)
34c8bcba
JM		 3902 _bfd_error_handler
3903 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 3904 in_attr->i);
34c8bcba
JM		 3905 else
3906 _bfd_error_handler
3907 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ		 3908 out_attr->i);
3909 }
3910
3911 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3912 merge non-conflicting ones. */
3913 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
3914 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
3915 if (in_attr->i != out_attr->i)
3916 {
3917 const char *in_abi = NULL, *out_abi = NULL;
3918
3919 switch (in_attr->i)
3920 {
3921 case 1: in_abi = "generic"; break;
3922 case 2: in_abi = "AltiVec"; break;
3923 case 3: in_abi = "SPE"; break;
3924 }
3925
3926 switch (out_attr->i)
3927 {
3928 case 1: out_abi = "generic"; break;
3929 case 2: out_abi = "AltiVec"; break;
3930 case 3: out_abi = "SPE"; break;
3931 }
3932
3933 out_attr->type = 1;
3934 if (out_attr->i == 0)
3935 out_attr->i = in_attr->i;
3936 else if (in_attr->i == 0)
3937 ;
3938 /* For now, allow generic to transition to AltiVec or SPE
3939 without a warning. If GCC marked files with their stack
3940 alignment and used don't-care markings for files which are
3941 not affected by the vector ABI, we could warn about this
3942 case too. */
3943 else if (out_attr->i == 1)
3944 out_attr->i = in_attr->i;
3945 else if (in_attr->i == 1)
3946 ;
3947 else if (in_abi == NULL)
3948 _bfd_error_handler
3949 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
3950 in_attr->i);
3951 else if (out_abi == NULL)
3952 _bfd_error_handler
3953 (_("Warning: %B uses unknown vector ABI %d"), obfd,
3954 in_attr->i);
3955 else
3956 _bfd_error_handler
3957 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
3958 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM		 3959 }
3960
3961 /* Merge Tag_compatibility attributes and any common GNU ones. */
3962 _bfd_elf_merge_object_attributes (ibfd, obfd);
3963
3964 return TRUE;
3965}
3966
8853c3d3
AM		 3967/* Merge backend specific data from an object file to the output
3968 object file when linking. */
3969
3970static bfd_boolean
3971ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3972{
3973 flagword old_flags;
3974 flagword new_flags;
3975 bfd_boolean error;
3976
0c8d6e5c 3977 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM		 3978 return TRUE;
3979
3980 /* Check if we have the same endianess. */
3981 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3982 return FALSE;
3983
34c8bcba
JM		 3984 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
3985 return FALSE;
3986
8853c3d3
AM		 3987 new_flags = elf_elfheader (ibfd)->e_flags;
3988 old_flags = elf_elfheader (obfd)->e_flags;
3989 if (!elf_flags_init (obfd))
3990 {
3991 /* First call, no flags set. */
3992 elf_flags_init (obfd) = TRUE;
3993 elf_elfheader (obfd)->e_flags = new_flags;
3994 }
3995
3996 /* Compatible flags are ok. */
3997 else if (new_flags == old_flags)
3998 ;
3999
4000 /* Incompatible flags. */
4001 else
4002 {
4003 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4004 to be linked with either. */
4005 error = FALSE;
4006 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4007 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4008 {
4009 error = TRUE;
4010 (*_bfd_error_handler)
4011 (_("%B: compiled with -mrelocatable and linked with "
4012 "modules compiled normally"), ibfd);
4013 }
4014 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4015 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4016 {
4017 error = TRUE;
4018 (*_bfd_error_handler)
4019 (_("%B: compiled normally and linked with "
4020 "modules compiled with -mrelocatable"), ibfd);
4021 }
4022
4023 /* The output is -mrelocatable-lib iff both the input files are. */
4024 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4025 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4026
4027 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4028 but each input file is either -mrelocatable or -mrelocatable-lib. */
4029 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4030 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4031 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4032 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4033
4034 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4035 any module uses it. */
4036 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4037
4038 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4039 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4040
4041 /* Warn about any other mismatches. */
4042 if (new_flags != old_flags)
4043 {
4044 error = TRUE;
4045 (*_bfd_error_handler)
4046 (_("%B: uses different e_flags (0x%lx) fields "
4047 "than previous modules (0x%lx)"),
4048 ibfd, (long) new_flags, (long) old_flags);
4049 }
4050
4051 if (error)
4052 {
4053 bfd_set_error (bfd_error_bad_value);
4054 return FALSE;
4055 }
4056 }
4057
4058 return TRUE;
4059}
4060\f
d7128ce4
AM		 4061/* Choose which PLT scheme to use, and set .plt flags appropriately.
4062 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4063int
4064ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4065 struct bfd_link_info *info,
016687f8 4066 enum ppc_elf_plt_type plt_style,
0ba07910 4067 int emit_stub_syms)
d7128ce4
AM		 4068{
4069 struct ppc_elf_link_hash_table *htab;
9d8504b1 4070 flagword flags;
d7128ce4
AM		 4071
4072 htab = ppc_elf_hash_table (info);
4a3dc543
RS		 4073
4074 if (htab->plt_type == PLT_UNSET)
016687f8
AM		 4075 {
4076 if (plt_style == PLT_OLD)
4077 htab->plt_type = PLT_OLD;
4078 else
4079 {
4080 bfd *ibfd;
4081 enum ppc_elf_plt_type plt_type = plt_style;
4082
4083 /* Look through the reloc flags left by ppc_elf_check_relocs.
4084 Use the old style bss plt if a file makes plt calls
4085 without using the new relocs, and if ld isn't given
4086 --secure-plt and we never see REL16 relocs. */
4087 if (plt_type == PLT_UNSET)
4088 plt_type = PLT_OLD;
60b31e8d 4089 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
0c8d6e5c 4090 if (is_ppc_elf (ibfd))
016687f8
AM		 4091 {
4092 if (ppc_elf_tdata (ibfd)->has_rel16)
4093 plt_type = PLT_NEW;
4094 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4095 {
4096 plt_type = PLT_OLD;
4097 htab->old_bfd = ibfd;
4098 break;
4099 }
4100 }
4101 htab->plt_type = plt_type;
4102 }
4103 }
4104 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4105 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
d7128ce4 4106
0ba07910
AM		 4107 htab->emit_stub_syms = emit_stub_syms;
4108
4a3dc543 4109 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4110
4a3dc543 4111 if (htab->plt_type == PLT_NEW)
9d8504b1
PB		 4112 {
4113 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4114 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM		 4115
4116 /* The new PLT is a loaded section. */
4117 if (htab->plt != NULL
4118 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4119 return -1;
4120
4121 /* The new GOT is not executable. */
4122 if (htab->got != NULL
4123 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4124 return -1;
d7128ce4
AM		 4125 }
4126 else
4127 {
4128 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM		 4129 if (htab->glink != NULL
4130 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4131 return -1;
d7128ce4 4132 }
4a3dc543 4133 return htab->plt_type == PLT_NEW;
d7128ce4
AM		 4134}
4135\f
25dbc73a
AM		 4136/* Return the section that should be marked against GC for a given
4137 relocation. */
586119b3 4138
25dbc73a
AM		 4139static asection *
4140ppc_elf_gc_mark_hook (asection *sec,
07adf181 4141 struct bfd_link_info *info,
25dbc73a
AM		 4142 Elf_Internal_Rela *rel,
4143 struct elf_link_hash_entry *h,
4144 Elf_Internal_Sym *sym)
4145{
4146 if (h != NULL)
07adf181
AM		 4147 switch (ELF32_R_TYPE (rel->r_info))
4148 {
4149 case R_PPC_GNU_VTINHERIT:
4150 case R_PPC_GNU_VTENTRY:
4151 return NULL;
4152 }
4153
4154 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 4155}
a876ecf9 4156
25dbc73a
AM		 4157/* Update the got, plt and dynamic reloc reference counts for the
4158 section being removed. */
4159
4160static bfd_boolean
4161ppc_elf_gc_sweep_hook (bfd *abfd,
4162 struct bfd_link_info *info,
4163 asection *sec,
4164 const Elf_Internal_Rela *relocs)
4165{
4166 struct ppc_elf_link_hash_table *htab;
4167 Elf_Internal_Shdr *symtab_hdr;
4168 struct elf_link_hash_entry **sym_hashes;
4169 bfd_signed_vma *local_got_refcounts;
4170 const Elf_Internal_Rela *rel, *relend;
a6aa5195 4171 asection *got2;
25dbc73a 4172
7dda2462
TG		 4173 if (info->relocatable)
4174 return TRUE;
4175
c87b5a93
AM		 4176 if ((sec->flags & SEC_ALLOC) == 0)
4177 return TRUE;
4178
25dbc73a
AM		 4179 elf_section_data (sec)->local_dynrel = NULL;
4180
4181 htab = ppc_elf_hash_table (info);
0ffa91dd 4182 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM		 4183 sym_hashes = elf_sym_hashes (abfd);
4184 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 4185 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM		 4186
4187 relend = relocs + sec->reloc_count;
4188 for (rel = relocs; rel < relend; rel++)
4189 {
4190 unsigned long r_symndx;
4191 enum elf_ppc_reloc_type r_type;
4192 struct elf_link_hash_entry *h = NULL;
4193
4194 r_symndx = ELF32_R_SYM (rel->r_info);
4195 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 4196 {
25dbc73a
AM		 4197 struct ppc_elf_dyn_relocs **pp, *p;
4198 struct ppc_elf_link_hash_entry *eh;
4199
4200 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4201 while (h->root.type == bfd_link_hash_indirect
4202 || h->root.type == bfd_link_hash_warning)
4203 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4204 eh = (struct ppc_elf_link_hash_entry *) h;
4205
4206 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4207 if (p->sec == sec)
4208 {
4209 /* Everything must go for SEC. */
4210 *pp = p->next;
4211 break;
4212 }
a876ecf9 4213 }
ee05f2fe 4214
25dbc73a
AM		 4215 r_type = ELF32_R_TYPE (rel->r_info);
4216 switch (r_type)
ee05f2fe 4217 {
25dbc73a
AM		 4218 case R_PPC_GOT_TLSLD16:
4219 case R_PPC_GOT_TLSLD16_LO:
4220 case R_PPC_GOT_TLSLD16_HI:
4221 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM		 4222 case R_PPC_GOT_TLSGD16:
4223 case R_PPC_GOT_TLSGD16_LO:
4224 case R_PPC_GOT_TLSGD16_HI:
4225 case R_PPC_GOT_TLSGD16_HA:
4226 case R_PPC_GOT_TPREL16:
4227 case R_PPC_GOT_TPREL16_LO:
4228 case R_PPC_GOT_TPREL16_HI:
4229 case R_PPC_GOT_TPREL16_HA:
4230 case R_PPC_GOT_DTPREL16:
4231 case R_PPC_GOT_DTPREL16_LO:
4232 case R_PPC_GOT_DTPREL16_HI:
4233 case R_PPC_GOT_DTPREL16_HA:
4234 case R_PPC_GOT16:
4235 case R_PPC_GOT16_LO:
4236 case R_PPC_GOT16_HI:
4237 case R_PPC_GOT16_HA:
4238 if (h != NULL)
ee05f2fe 4239 {
25dbc73a
AM		 4240 if (h->got.refcount > 0)
4241 h->got.refcount--;
ee05f2fe 4242 }
25dbc73a
AM		 4243 else if (local_got_refcounts != NULL)
4244 {
4245 if (local_got_refcounts[r_symndx] > 0)
4246 local_got_refcounts[r_symndx]--;
4247 }
4248 break;
ee05f2fe 4249
25dbc73a
AM		 4250 case R_PPC_REL24:
4251 case R_PPC_REL14:
4252 case R_PPC_REL14_BRTAKEN:
4253 case R_PPC_REL14_BRNTAKEN:
4254 case R_PPC_REL32:
3b36f7e6 4255 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM		 4256 break;
4257 /* Fall thru */
ee05f2fe 4258
25dbc73a
AM		 4259 case R_PPC_ADDR32:
4260 case R_PPC_ADDR24:
4261 case R_PPC_ADDR16:
4262 case R_PPC_ADDR16_LO:
4263 case R_PPC_ADDR16_HI:
4264 case R_PPC_ADDR16_HA:
4265 case R_PPC_ADDR14:
4266 case R_PPC_ADDR14_BRTAKEN:
4267 case R_PPC_ADDR14_BRNTAKEN:
4268 case R_PPC_UADDR32:
4269 case R_PPC_UADDR16:
87538722
AM		 4270 if (info->shared)
4271 break;
4272
25dbc73a
AM		 4273 case R_PPC_PLT32:
4274 case R_PPC_PLTREL24:
87538722 4275 case R_PPC_PLTREL32:
25dbc73a
AM		 4276 case R_PPC_PLT16_LO:
4277 case R_PPC_PLT16_HI:
4278 case R_PPC_PLT16_HA:
4279 if (h != NULL)
4280 {
a6aa5195
AM		 4281 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
4282 struct plt_entry *ent = find_plt_ent (h, got2, addend);
4283 if (ent->plt.refcount > 0)
4284 ent->plt.refcount -= 1;
25dbc73a
AM		 4285 }
4286 break;
ee05f2fe 4287
25dbc73a
AM		 4288 default:
4289 break;
4290 }
7fce784e 4291 }
7fce784e
AS		 4292 return TRUE;
4293}
25dbc73a
AM		 4294\f
4295/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7fce784e 4296
25dbc73a
AM		 4297asection *
4298ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 4299{
25dbc73a 4300 struct ppc_elf_link_hash_table *htab;
7fce784e 4301
25dbc73a 4302 htab = ppc_elf_hash_table (info);
4a3dc543 4303 if (htab->plt_type == PLT_NEW
d7128ce4
AM		 4304 && htab->plt != NULL
4305 && htab->plt->output_section != NULL)
4306 {
4307 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4308 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4309 }
4310
25dbc73a
AM		 4311 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4312 FALSE, FALSE, TRUE);
25dbc73a 4313 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS		 4314}
4315
25dbc73a
AM		 4316/* Run through all the TLS relocs looking for optimization
4317 opportunities. */
252b5132 4318
25dbc73a
AM		 4319bfd_boolean
4320ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4321 struct bfd_link_info *info)
252b5132 4322{
7fce784e 4323 bfd *ibfd;
25dbc73a
AM		 4324 asection *sec;
4325 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 4326 int pass;
252b5132 4327
1d483afe 4328 if (info->relocatable || !info->executable)
25dbc73a 4329 return TRUE;
252b5132 4330
7619e7c7 4331 htab = ppc_elf_hash_table (info);
b7fcf6f6
AM		 4332 /* Make two passes through the relocs. First time check that tls
4333 relocs involved in setting up a tls_get_addr call are indeed
4334 followed by such a call. If they are not, exclude them from
4335 the optimizations done on the second pass. */
4336 for (pass = 0; pass < 2; ++pass)
4337 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4338 {
4339 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 4340 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7619e7c7 4341
b7fcf6f6
AM		 4342 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4343 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4344 {
4345 Elf_Internal_Rela *relstart, *rel, *relend;
252b5132 4346
b7fcf6f6
AM		 4347 /* Read the relocations. */
4348 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4349 info->keep_memory);
4350 if (relstart == NULL)
4351 return FALSE;
7619e7c7 4352
b7fcf6f6
AM		 4353 relend = relstart + sec->reloc_count;
4354 for (rel = relstart; rel < relend; rel++)
4355 {
4356 enum elf_ppc_reloc_type r_type;
4357 unsigned long r_symndx;
4358 struct elf_link_hash_entry *h = NULL;
4359 char *tls_mask;
4360 char tls_set, tls_clear;
4361 bfd_boolean is_local;
4362 int expecting_tls_get_addr;
4363 bfd_signed_vma *got_count;
4364
4365 r_symndx = ELF32_R_SYM (rel->r_info);
4366 if (r_symndx >= symtab_hdr->sh_info)
4367 {
4368 struct elf_link_hash_entry **sym_hashes;
7fce784e 4369
b7fcf6f6
AM		 4370 sym_hashes = elf_sym_hashes (ibfd);
4371 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4372 while (h->root.type == bfd_link_hash_indirect
4373 || h->root.type == bfd_link_hash_warning)
4374 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4375 }
7619e7c7 4376
b7fcf6f6
AM		 4377 expecting_tls_get_addr = 0;
4378 is_local = FALSE;
4379 if (h == NULL
4380 || !h->def_dynamic)
4381 is_local = TRUE;
7619e7c7 4382
b7fcf6f6
AM		 4383 r_type = ELF32_R_TYPE (rel->r_info);
4384 switch (r_type)
4385 {
4386 case R_PPC_GOT_TLSLD16:
4387 case R_PPC_GOT_TLSLD16_LO:
4388 expecting_tls_get_addr = 1;
4389 /* Fall thru */
4390
4391 case R_PPC_GOT_TLSLD16_HI:
4392 case R_PPC_GOT_TLSLD16_HA:
4393 /* These relocs should never be against a symbol
4394 defined in a shared lib. Leave them alone if
4395 that turns out to be the case. */
4396 if (!is_local)
4397 continue;
4398
4399 /* LD -> LE */
4400 tls_set = 0;
4401 tls_clear = TLS_LD;
4402 break;
4403
4404 case R_PPC_GOT_TLSGD16:
4405 case R_PPC_GOT_TLSGD16_LO:
4406 expecting_tls_get_addr = 1;
4407 /* Fall thru */
4408
4409 case R_PPC_GOT_TLSGD16_HI:
4410 case R_PPC_GOT_TLSGD16_HA:
4411 if (is_local)
4412 /* GD -> LE */
4413 tls_set = 0;
4414 else
4415 /* GD -> IE */
4416 tls_set = TLS_TLS | TLS_TPRELGD;
4417 tls_clear = TLS_GD;
4418 break;
4419
4420 case R_PPC_GOT_TPREL16:
4421 case R_PPC_GOT_TPREL16_LO:
4422 case R_PPC_GOT_TPREL16_HI:
4423 case R_PPC_GOT_TPREL16_HA:
4424 if (is_local)
4425 {
4426 /* IE -> LE */
4427 tls_set = 0;
4428 tls_clear = TLS_TPREL;
4429 break;
4430 }
4431 else
4432 continue;
4433
4434 default:
25dbc73a 4435 continue;
b7fcf6f6 4436 }
25dbc73a 4437
b7fcf6f6
AM		 4438 if (pass == 0)
4439 {
4440 if (!expecting_tls_get_addr)
4441 continue;
25dbc73a 4442
b7fcf6f6
AM		 4443 if (rel + 1 < relend)
4444 {
4445 enum elf_ppc_reloc_type r_type2;
4446 unsigned long r_symndx2;
4447 struct elf_link_hash_entry *h2;
4448
4449 /* The next instruction should be a call to
4450 __tls_get_addr. Peek at the reloc to be sure. */
4451 r_type2 = ELF32_R_TYPE (rel[1].r_info);
4452 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
4453 if (r_symndx2 >= symtab_hdr->sh_info
4454 && (r_type2 == R_PPC_REL14
4455 || r_type2 == R_PPC_REL14_BRTAKEN
4456 || r_type2 == R_PPC_REL14_BRNTAKEN
4457 || r_type2 == R_PPC_REL24
4458 || r_type2 == R_PPC_PLTREL24))
4459 {
4460 struct elf_link_hash_entry **sym_hashes;
4461
4462 sym_hashes = elf_sym_hashes (ibfd);
4463 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
4464 while (h2->root.type == bfd_link_hash_indirect
4465 || h2->root.type == bfd_link_hash_warning)
4466 h2 = ((struct elf_link_hash_entry *)
4467 h2->root.u.i.link);
4468 if (h2 == htab->tls_get_addr)
4469 continue;
4470 }
4471 }
25dbc73a 4472
b7fcf6f6
AM		 4473 /* Uh oh, we didn't find the expected call. We
4474 could just mark this symbol to exclude it
4475 from tls optimization but it's safer to skip
4476 the entire section. */
4477 sec->has_tls_reloc = 0;
4478 break;
4479 }
25dbc73a 4480
b7fcf6f6
AM		 4481 if (h != NULL)
4482 {
4483 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4484 got_count = &h->got.refcount;
4485 }
4486 else
4487 {
4488 Elf_Internal_Sym *sym;
4489 bfd_signed_vma *lgot_refs;
4490 char *lgot_masks;
25dbc73a 4491
b7fcf6f6
AM		 4492 if (locsyms == NULL)
4493 {
4494 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4495 if (locsyms == NULL)
4496 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4497 symtab_hdr->sh_info,
4498 0, NULL, NULL, NULL);
4499 if (locsyms == NULL)
4500 {
4501 if (elf_section_data (sec)->relocs != relstart)
4502 free (relstart);
4503 return FALSE;
4504 }
4505 }
4506 sym = locsyms + r_symndx;
4507 lgot_refs = elf_local_got_refcounts (ibfd);
4508 if (lgot_refs == NULL)
4509 abort ();
4510 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4511 tls_mask = &lgot_masks[r_symndx];
4512 got_count = &lgot_refs[r_symndx];
4513 }
25dbc73a 4514
b7fcf6f6
AM		 4515 if (tls_set == 0)
4516 {
4517 /* We managed to get rid of a got entry. */
4518 if (*got_count > 0)
4519 *got_count -= 1;
4520 }
25dbc73a 4521
b7fcf6f6
AM		 4522 if (expecting_tls_get_addr)
4523 {
4524 struct plt_entry *ent;
25dbc73a 4525
b7fcf6f6
AM		 4526 ent = find_plt_ent (htab->tls_get_addr, NULL, 0);
4527 if (ent != NULL && ent->plt.refcount > 0)
4528 ent->plt.refcount -= 1;
4529 }
25dbc73a 4530
b7fcf6f6
AM		 4531 *tls_mask |= tls_set;
4532 *tls_mask &= ~tls_clear;
4533 }
25dbc73a 4534
b7fcf6f6
AM		 4535 if (elf_section_data (sec)->relocs != relstart)
4536 free (relstart);
4537 }
4538
4539 if (locsyms != NULL
4540 && (symtab_hdr->contents != (unsigned char *) locsyms))
4541 {
4542 if (!info->keep_memory)
4543 free (locsyms);
4544 else
4545 symtab_hdr->contents = (unsigned char *) locsyms;
4546 }
4547 }
25dbc73a
AM		 4548 return TRUE;
4549}
4550\f
625af618
AM		 4551/* Return true if we have dynamic relocs that apply to read-only sections. */
4552
4553static bfd_boolean
4554readonly_dynrelocs (struct elf_link_hash_entry *h)
4555{
4556 struct ppc_elf_dyn_relocs *p;
4557
4558 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4559 {
4560 asection *s = p->sec->output_section;
4561
4562 if (s != NULL
4563 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4564 == (SEC_READONLY | SEC_ALLOC)))
4565 return TRUE;
4566 }
4567 return FALSE;
4568}
4569
25dbc73a
AM		 4570/* Adjust a symbol defined by a dynamic object and referenced by a
4571 regular object. The current definition is in some section of the
4572 dynamic object, but we're not including those sections. We have to
4573 change the definition to something the rest of the link can
4574 understand. */
7fce784e 4575
25dbc73a
AM		 4576static bfd_boolean
4577ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4578 struct elf_link_hash_entry *h)
4579{
4580 struct ppc_elf_link_hash_table *htab;
4581 asection *s;
7fce784e 4582
25dbc73a
AM		 4583#ifdef DEBUG
4584 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4585 h->root.root.string);
4586#endif
252b5132 4587
25dbc73a
AM		 4588 /* Make sure we know what is going on here. */
4589 htab = ppc_elf_hash_table (info);
4590 BFD_ASSERT (htab->elf.dynobj != NULL
4591 && (h->needs_plt
4592 || h->u.weakdef != NULL
4593 || (h->def_dynamic
4594 && h->ref_regular
4595 && !h->def_regular)));
252b5132 4596
25dbc73a
AM		 4597 /* Deal with function syms. */
4598 if (h->type == STT_FUNC
4599 || h->needs_plt)
4600 {
4601 /* Clear procedure linkage table information for any symbol that
4602 won't need a .plt entry. */
a6aa5195
AM		 4603 struct plt_entry *ent;
4604 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4605 if (ent->plt.refcount > 0)
4606 break;
4607 if (ent == NULL
25dbc73a
AM		 4608 || SYMBOL_CALLS_LOCAL (info, h)
4609 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4610 && h->root.type == bfd_link_hash_undefweak))
252b5132 4611 {
25dbc73a 4612 /* A PLT entry is not required/allowed when:
252b5132 4613
25dbc73a
AM		 4614 1. We are not using ld.so; because then the PLT entry
4615 can't be set up, so we can't use one. In this case,
4616 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 4617
25dbc73a
AM		 4618 2. GC has rendered the entry unused.
4619
4620 3. We know for certain that a call to this symbol
4621 will go to this object, or will remain undefined. */
a6aa5195 4622 h->plt.plist = NULL;
25dbc73a
AM		 4623 h->needs_plt = 0;
4624 }
625af618
AM		 4625 else
4626 {
4627 /* After adjust_dynamic_symbol, non_got_ref set means that
4628 dyn_relocs for this symbol should be discarded.
4629 If we get here we know we are making a PLT entry for this
4630 symbol, and in an executable we'd normally resolve
4631 relocations against this symbol to the PLT entry. Allow
4632 dynamic relocs if the reference is weak, and the dynamic
4633 relocs will not cause text relocation. */
4634 if (!h->ref_regular_nonweak
4635 && h->non_got_ref
4636 && !htab->is_vxworks
4637 && !ppc_elf_hash_entry (h)->has_sda_refs
4638 && !readonly_dynrelocs (h))
4639 h->non_got_ref = 0;
4640 }
25dbc73a 4641 return TRUE;
252b5132 4642 }
25dbc73a 4643 else
a6aa5195 4644 h->plt.plist = NULL;
252b5132 4645
25dbc73a
AM		 4646 /* If this is a weak symbol, and there is a real definition, the
4647 processor independent code will have arranged for us to see the
4648 real definition first, and we can just use the same value. */
4649 if (h->u.weakdef != NULL)
252b5132 4650 {
25dbc73a
AM		 4651 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4652 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4653 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4654 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4655 if (ELIMINATE_COPY_RELOCS)
4656 h->non_got_ref = h->u.weakdef->non_got_ref;
4657 return TRUE;
4658 }
dc810e39 4659
25dbc73a
AM		 4660 /* This is a reference to a symbol defined by a dynamic object which
4661 is not a function. */
252b5132 4662
25dbc73a
AM		 4663 /* If we are creating a shared library, we must presume that the
4664 only references to the symbol are via the global offset table.
4665 For such cases we need not do anything here; the relocations will
4666 be handled correctly by relocate_section. */
4667 if (info->shared)
4668 return TRUE;
252b5132 4669
25dbc73a
AM		 4670 /* If there are no references to this symbol that do not use the
4671 GOT, we don't need to generate a copy reloc. */
4672 if (!h->non_got_ref)
4673 return TRUE;
4674
cfd2c773
NS		 4675 /* If we didn't find any dynamic relocs in read-only sections, then
4676 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4677 We can't do this if there are any small data relocations. This
4678 doesn't work on VxWorks, where we can not have dynamic
4679 relocations (other than copy and jump slot relocations) in an
4680 executable. */
4dc4a9a5 4681 if (ELIMINATE_COPY_RELOCS
cfd2c773 4682 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM		 4683 && !htab->is_vxworks
4684 && !h->def_regular
4685 && !readonly_dynrelocs (h))
25dbc73a 4686 {
625af618
AM		 4687 h->non_got_ref = 0;
4688 return TRUE;
252b5132
RH		 4689 }
4690
909272ee
AM		 4691 if (h->size == 0)
4692 {
4693 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4694 h->root.root.string);
4695 return TRUE;
4696 }
4697
25dbc73a
AM		 4698 /* We must allocate the symbol in our .dynbss section, which will
4699 become part of the .bss section of the executable. There will be
4700 an entry for this symbol in the .dynsym section. The dynamic
4701 object will contain position independent code, so all references
4702 from the dynamic object to this symbol will go through the global
4703 offset table. The dynamic linker will use the .dynsym entry to
4704 determine the address it must put in the global offset table, so
4705 both the dynamic object and the regular object will refer to the
4706 same memory location for the variable.
4707
4dc4a9a5
DJ		 4708 Of course, if the symbol is referenced using SDAREL relocs, we
4709 must instead allocate it in .sbss. */
25dbc73a 4710
4dc4a9a5 4711 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 4712 s = htab->dynsbss;
4713 else
4714 s = htab->dynbss;
4715 BFD_ASSERT (s != NULL);
4716
4717 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4718 copy the initial value out of the dynamic object and into the
4719 runtime process image. We need to remember the offset into the
4720 .rela.bss section we are going to use. */
4721 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4722 {
4723 asection *srel;
4724
4dc4a9a5 4725 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 4726 srel = htab->relsbss;
4727 else
4728 srel = htab->relbss;
4729 BFD_ASSERT (srel != NULL);
4730 srel->size += sizeof (Elf32_External_Rela);
4731 h->needs_copy = 1;
4732 }
7619e7c7 4733
027297b7 4734 return _bfd_elf_adjust_dynamic_copy (h, s);
25dbc73a
AM		 4735}
4736\f
ac39eb42
AM		 4737/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4738 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4739 specifying the addend on the plt relocation. For -fpic code, the sym
4740 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4741 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM		 4742
4743static bfd_boolean
4744add_stub_sym (struct plt_entry *ent,
4745 struct elf_link_hash_entry *h,
ac39eb42 4746 struct bfd_link_info *info)
0ba07910
AM		 4747{
4748 struct elf_link_hash_entry *sh;
4749 size_t len1, len2, len3;
4750 char *name;
ac39eb42
AM		 4751 const char *stub;
4752 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4753
4754 if (info->shared || info->pie)
4755 stub = ".plt_pic32.";
4756 else
4757 stub = ".plt_call32.";
0ba07910
AM		 4758
4759 len1 = strlen (h->root.root.string);
ac39eb42 4760 len2 = strlen (stub);
0ba07910
AM		 4761 len3 = 0;
4762 if (ent->sec)
4763 len3 = strlen (ent->sec->name);
ac39eb42 4764 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM		 4765 if (name == NULL)
4766 return FALSE;
4767 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4768 if (ent->sec)
4769 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM		 4770 memcpy (name + 8 + len3, stub, len2);
4771 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM		 4772 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4773 if (sh == NULL)
4774 return FALSE;
4775 if (sh->root.type == bfd_link_hash_new)
4776 {
4777 sh->root.type = bfd_link_hash_defined;
4778 sh->root.u.def.section = htab->glink;
4779 sh->root.u.def.value = ent->glink_offset;
4780 sh->ref_regular = 1;
4781 sh->def_regular = 1;
4782 sh->ref_regular_nonweak = 1;
4783 sh->forced_local = 1;
4784 sh->non_elf = 0;
4785 }
4786 return TRUE;
4787}
4788
3b36f7e6
AM		 4789/* Allocate NEED contiguous space in .got, and return the offset.
4790 Handles allocation of the got header when crossing 32k. */
4791
4792static bfd_vma
4793allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4794{
4795 bfd_vma where;
4a3dc543 4796 unsigned int max_before_header;
3b36f7e6 4797
4a3dc543 4798 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB		 4799 {
4800 where = htab->got->size;
4801 htab->got->size += need;
4802 }
3b36f7e6
AM		 4803 else
4804 {
4a3dc543
RS		 4805 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4806 if (need <= htab->got_gap)
3b36f7e6 4807 {
4a3dc543
RS		 4808 where = max_before_header - htab->got_gap;
4809 htab->got_gap -= need;
4810 }
4811 else
4812 {
4813 if (htab->got->size + need > max_before_header
4814 && htab->got->size <= max_before_header)
4815 {
4816 htab->got_gap = max_before_header - htab->got->size;
4817 htab->got->size = max_before_header + htab->got_header_size;
4818 }
4819 where = htab->got->size;
4820 htab->got->size += need;
3b36f7e6 4821 }
3b36f7e6
AM		 4822 }
4823 return where;
4824}
4825
25dbc73a 4826/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 4827
b34976b6 4828static bfd_boolean
25dbc73a 4829allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 4830{
25dbc73a
AM		 4831 struct bfd_link_info *info = inf;
4832 struct ppc_elf_link_hash_entry *eh;
7619e7c7 4833 struct ppc_elf_link_hash_table *htab;
25dbc73a 4834 struct ppc_elf_dyn_relocs *p;
252b5132 4835
25dbc73a 4836 if (h->root.type == bfd_link_hash_indirect)
b34976b6 4837 return TRUE;
252b5132 4838
25dbc73a
AM		 4839 if (h->root.type == bfd_link_hash_warning)
4840 /* When warning symbols are created, they **replace** the "real"
4841 entry in the hash table, thus we never get to see the real
4842 symbol in a hash traversal. So look at it now. */
4843 h = (struct elf_link_hash_entry *) h->root.u.i.link;
e47cd125 4844
7619e7c7 4845 htab = ppc_elf_hash_table (info);
a6aa5195 4846 if (htab->elf.dynamic_sections_created)
252b5132 4847 {
a6aa5195
AM		 4848 struct plt_entry *ent;
4849 bfd_boolean doneone = FALSE;
28e99bb6
AM		 4850 bfd_vma plt_offset = 0, glink_offset = 0;
4851
a6aa5195
AM		 4852 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4853 if (ent->plt.refcount > 0)
4854 {
4855 /* Make sure this symbol is output as a dynamic symbol. */
4856 if (h->dynindx == -1
4857 && !h->forced_local)
4858 {
4859 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4860 return FALSE;
4861 }
252b5132 4862
a6aa5195
AM		 4863 if (info->shared
4864 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4865 {
4866 asection *s = htab->plt;
7619e7c7 4867
4a3dc543 4868 if (htab->plt_type == PLT_NEW)
a6aa5195 4869 {
a6aa5195 4870 if (!doneone)
28e99bb6
AM		 4871 {
4872 plt_offset = s->size;
4873 s->size += 4;
4874 }
4875 ent->plt.offset = plt_offset;
d7128ce4 4876
a6aa5195 4877 s = htab->glink;
28e99bb6
AM		 4878 if (!doneone || info->shared || info->pie)
4879 {
4880 glink_offset = s->size;
4881 s->size += GLINK_ENTRY_SIZE;
4882 }
4883 if (!doneone
4884 && !info->shared
625af618 4885 && h->def_dynamic
a6aa5195
AM		 4886 && !h->def_regular)
4887 {
4888 h->root.u.def.section = s;
28e99bb6 4889 h->root.u.def.value = glink_offset;
a6aa5195 4890 }
28e99bb6 4891 ent->glink_offset = glink_offset;
0ba07910
AM		 4892
4893 if (htab->emit_stub_syms
ac39eb42 4894 && !add_stub_sym (ent, h, info))
0ba07910 4895 return FALSE;
a6aa5195
AM		 4896 }
4897 else
4898 {
a6aa5195
AM		 4899 if (!doneone)
4900 {
28e99bb6
AM		 4901 /* If this is the first .plt entry, make room
4902 for the special first entry. */
4903 if (s->size == 0)
9d8504b1 4904 s->size += htab->plt_initial_entry_size;
28e99bb6
AM		 4905
4906 /* The PowerPC PLT is actually composed of two
4907 parts, the first part is 2 words (for a load
4908 and a jump), and then there is a remaining
4909 word available at the end. */
9d8504b1
PB		 4910 plt_offset = (htab->plt_initial_entry_size
4911 + (htab->plt_slot_size
4912 * ((s->size
4913 - htab->plt_initial_entry_size)
4914 / htab->plt_entry_size)));
28e99bb6
AM		 4915
4916 /* If this symbol is not defined in a regular
4917 file, and we are not generating a shared
4918 library, then set the symbol to this location
4919 in the .plt. This is required to make
4920 function pointers compare as equal between
4921 the normal executable and the shared library. */
4922 if (! info->shared
625af618 4923 && h->def_dynamic
28e99bb6
AM		 4924 && !h->def_regular)
4925 {
4926 h->root.u.def.section = s;
4927 h->root.u.def.value = plt_offset;
4928 }
4929
9d8504b1
PB		 4930 /* Make room for this entry. */
4931 s->size += htab->plt_entry_size;
4932 /* After the 8192nd entry, room for two entries
4933 is allocated. */
4a3dc543 4934 if (htab->plt_type == PLT_OLD
9d8504b1
PB		 4935 && (s->size - htab->plt_initial_entry_size)
4936 / htab->plt_entry_size
4937 > PLT_NUM_SINGLE_ENTRIES)
4938 s->size += htab->plt_entry_size;
a6aa5195 4939 }
28e99bb6 4940 ent->plt.offset = plt_offset;
a6aa5195 4941 }
25dbc73a 4942
a6aa5195
AM		 4943 /* We also need to make an entry in the .rela.plt section. */
4944 if (!doneone)
4945 {
4946 htab->relplt->size += sizeof (Elf32_External_Rela);
9d8504b1 4947
4a3dc543 4948 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB		 4949 {
4950 /* Allocate space for the unloaded relocations. */
4951 if (!info->shared)
4952 {
4953 if (ent->plt.offset
4954 == (bfd_vma) htab->plt_initial_entry_size)
4955 {
4956 htab->srelplt2->size
4957 += sizeof (Elf32_External_Rela)
4958 * VXWORKS_PLTRESOLVE_RELOCS;
4959 }
4960
4961 htab->srelplt2->size
4962 += sizeof (Elf32_External_Rela)
4963 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4964 }
4965
4966 /* Every PLT entry has an associated GOT entry in
4967 .got.plt. */
4968 htab->sgotplt->size += 4;
4969 }
a6aa5195
AM		 4970 doneone = TRUE;
4971 }
4972 }
4973 else
4974 ent->plt.offset = (bfd_vma) -1;
a6aa5195 4975 }
2ce859a1
AM		 4976 else
4977 ent->plt.offset = (bfd_vma) -1;
4978
4979 if (!doneone)
4980 {
4981 h->plt.plist = NULL;
4982 h->needs_plt = 0;
4983 }
25dbc73a
AM		 4984 }
4985 else
4986 {
a6aa5195 4987 h->plt.plist = NULL;
25dbc73a
AM		 4988 h->needs_plt = 0;
4989 }
4990
4991 eh = (struct ppc_elf_link_hash_entry *) h;
4992 if (eh->elf.got.refcount > 0)
4993 {
4994 /* Make sure this symbol is output as a dynamic symbol. */
4995 if (eh->elf.dynindx == -1
4996 && !eh->elf.forced_local)
4997 {
4998 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 4999 return FALSE;
25dbc73a 5000 }
252b5132 5001
25dbc73a
AM		 5002 if (eh->tls_mask == (TLS_TLS | TLS_LD)
5003 && !eh->elf.def_dynamic)
b7fcf6f6
AM		 5004 {
5005 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
5006 htab->tlsld_got.refcount += 1;
5007 eh->elf.got.offset = (bfd_vma) -1;
5008 }
25dbc73a
AM		 5009 else
5010 {
5011 bfd_boolean dyn;
3b36f7e6 5012 unsigned int need = 0;
25dbc73a 5013 if ((eh->tls_mask & TLS_TLS) != 0)
252b5132 5014 {
25dbc73a 5015 if ((eh->tls_mask & TLS_LD) != 0)
3b36f7e6 5016 need += 8;
25dbc73a 5017 if ((eh->tls_mask & TLS_GD) != 0)
3b36f7e6 5018 need += 8;
25dbc73a 5019 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
3b36f7e6 5020 need += 4;
25dbc73a 5021 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 5022 need += 4;
252b5132 5023 }
25dbc73a 5024 else
3b36f7e6
AM		 5025 need += 4;
5026 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM		 5027 dyn = htab->elf.dynamic_sections_created;
5028 if ((info->shared
5029 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5030 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5031 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 5032 {
3b36f7e6
AM		 5033 /* All the entries we allocated need relocs.
5034 Except LD only needs one. */
25dbc73a 5035 if ((eh->tls_mask & TLS_LD) != 0)
3b36f7e6
AM		 5036 need -= 4;
5037 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 5038 }
25dbc73a
AM		 5039 }
5040 }
5041 else
5042 eh->elf.got.offset = (bfd_vma) -1;
252b5132 5043
25dbc73a
AM		 5044 if (eh->dyn_relocs == NULL)
5045 return TRUE;
252b5132 5046
25dbc73a
AM		 5047 /* In the shared -Bsymbolic case, discard space allocated for
5048 dynamic pc-relative relocs against symbols which turn out to be
5049 defined in regular objects. For the normal shared case, discard
5050 space for relocs that have become local due to symbol visibility
5051 changes. */
5052
5053 if (info->shared)
5054 {
5055 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 5056 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM		 5057 generated via assembly. We want calls to protected symbols to
5058 resolve directly to the function rather than going via the plt.
5059 If people want function pointer comparisons to work as expected
5060 then they should avoid writing weird assembly. */
5061 if (SYMBOL_CALLS_LOCAL (info, h))
5062 {
5063 struct ppc_elf_dyn_relocs **pp;
5064
5065 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 5066 {
25dbc73a
AM		 5067 p->count -= p->pc_count;
5068 p->pc_count = 0;
5069 if (p->count == 0)
5070 *pp = p->next;
5071 else
5072 pp = &p->next;
252b5132 5073 }
25dbc73a 5074 }
252b5132 5075
3348747a
NS		 5076 if (htab->is_vxworks)
5077 {
5078 struct ppc_elf_dyn_relocs **pp;
5079
5080 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5081 {
5082 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5083 *pp = p->next;
5084 else
5085 pp = &p->next;
5086 }
5087 }
5088
89200bf8
AM		 5089 /* Discard relocs on undefined symbols that must be local. */
5090 if (eh->dyn_relocs != NULL
5091 && h->root.type == bfd_link_hash_undefined
5092 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5093 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5094 eh->dyn_relocs = NULL;
5095
25dbc73a
AM		 5096 /* Also discard relocs on undefined weak syms with non-default
5097 visibility. */
cab87ef9
AM		 5098 if (eh->dyn_relocs != NULL
5099 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 5100 {
dfbb6ac9
AM		 5101 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5102 eh->dyn_relocs = NULL;
5103
5104 /* Make sure undefined weak symbols are output as a dynamic
5105 symbol in PIEs. */
5106 else if (h->dynindx == -1
5107 && !h->forced_local)
5108 {
5109 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5110 return FALSE;
5111 }
25dbc73a
AM		 5112 }
5113 }
5114 else if (ELIMINATE_COPY_RELOCS)
5115 {
5116 /* For the non-shared case, discard space for relocs against
5117 symbols which turn out to need copy relocs or are not
5118 dynamic. */
7619e7c7 5119
25dbc73a 5120 if (!h->non_got_ref
25dbc73a
AM		 5121 && !h->def_regular)
5122 {
5123 /* Make sure this symbol is output as a dynamic symbol.
5124 Undefined weak syms won't yet be marked as dynamic. */
5125 if (h->dynindx == -1
5126 && !h->forced_local)
5127 {
5128 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5129 return FALSE;
5130 }
7619e7c7 5131
25dbc73a
AM		 5132 /* If that succeeded, we know we'll be keeping all the
5133 relocs. */
5134 if (h->dynindx != -1)
5135 goto keep;
5136 }
252b5132 5137
25dbc73a 5138 eh->dyn_relocs = NULL;
252b5132 5139
25dbc73a
AM		 5140 keep: ;
5141 }
252b5132 5142
25dbc73a
AM		 5143 /* Finally, allocate space. */
5144 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5145 {
5146 asection *sreloc = elf_section_data (p->sec)->sreloc;
5147 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5148 }
252b5132 5149
25dbc73a
AM		 5150 return TRUE;
5151}
7619e7c7 5152
625af618
AM		 5153/* Set DF_TEXTREL if we find any dynamic relocs that apply to
5154 read-only sections. */
7619e7c7 5155
25dbc73a 5156static bfd_boolean
625af618 5157maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 5158{
25dbc73a
AM		 5159 if (h->root.type == bfd_link_hash_indirect)
5160 return TRUE;
252b5132 5161
25dbc73a
AM		 5162 if (h->root.type == bfd_link_hash_warning)
5163 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5164
625af618 5165 if (readonly_dynrelocs (h))
25dbc73a 5166 {
625af618 5167 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 5168
625af618
AM		 5169 /* Not an error, just cut short the traversal. */
5170 return FALSE;
25dbc73a
AM		 5171 }
5172 return TRUE;
5173}
5174
5175/* Set the sizes of the dynamic sections. */
5176
5177static bfd_boolean
5178ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5179 struct bfd_link_info *info)
5180{
5181 struct ppc_elf_link_hash_table *htab;
5182 asection *s;
5183 bfd_boolean relocs;
5184 bfd *ibfd;
7fce784e 5185
252b5132 5186#ifdef DEBUG
25dbc73a 5187 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 5188#endif
252b5132 5189
25dbc73a
AM		 5190 htab = ppc_elf_hash_table (info);
5191 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 5192
25dbc73a
AM		 5193 if (elf_hash_table (info)->dynamic_sections_created)
5194 {
5195 /* Set the contents of the .interp section to the interpreter. */
5196 if (info->executable)
5197 {
5198 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5199 BFD_ASSERT (s != NULL);
5200 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5201 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5202 }
5203 }
252b5132 5204
4a3dc543 5205 if (htab->plt_type == PLT_OLD)
d7128ce4 5206 htab->got_header_size = 16;
4a3dc543 5207 else if (htab->plt_type == PLT_NEW)
d7128ce4 5208 htab->got_header_size = 12;
252b5132 5209
25dbc73a
AM		 5210 /* Set up .got offsets for local syms, and space for local dynamic
5211 relocs. */
5212 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5213 {
5214 bfd_signed_vma *local_got;
5215 bfd_signed_vma *end_local_got;
5216 char *lgot_masks;
5217 bfd_size_type locsymcount;
5218 Elf_Internal_Shdr *symtab_hdr;
7fce784e 5219
0c8d6e5c 5220 if (!is_ppc_elf (ibfd))
25dbc73a 5221 continue;
7fce784e 5222
25dbc73a
AM		 5223 for (s = ibfd->sections; s != NULL; s = s->next)
5224 {
5225 struct ppc_elf_dyn_relocs *p;
252b5132 5226
25dbc73a
AM		 5227 for (p = ((struct ppc_elf_dyn_relocs *)
5228 elf_section_data (s)->local_dynrel);
5229 p != NULL;
5230 p = p->next)
5231 {
5232 if (!bfd_is_abs_section (p->sec)
5233 && bfd_is_abs_section (p->sec->output_section))
5234 {
5235 /* Input section has been discarded, either because
5236 it is a copy of a linkonce section or due to
5237 linker script /DISCARD/, so we'll be discarding
5238 the relocs too. */
7fce784e 5239 }
3348747a
NS		 5240 else if (htab->is_vxworks
5241 && strcmp (p->sec->output_section->name,
5242 ".tls_vars") == 0)
5243 {
5244 /* Relocations in vxworks .tls_vars sections are
5245 handled specially by the loader. */
5246 }
25dbc73a 5247 else if (p->count != 0)
7fce784e 5248 {
25dbc73a
AM		 5249 elf_section_data (p->sec)->sreloc->size
5250 += p->count * sizeof (Elf32_External_Rela);
5251 if ((p->sec->output_section->flags
5252 & (SEC_READONLY | SEC_ALLOC))
5253 == (SEC_READONLY | SEC_ALLOC))
5254 info->flags |= DF_TEXTREL;
7fce784e 5255 }
252b5132 5256 }
252b5132 5257 }
252b5132 5258
25dbc73a
AM		 5259 local_got = elf_local_got_refcounts (ibfd);
5260 if (!local_got)
5261 continue;
252b5132 5262
0ffa91dd 5263 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM		 5264 locsymcount = symtab_hdr->sh_info;
5265 end_local_got = local_got + locsymcount;
5266 lgot_masks = (char *) end_local_got;
25dbc73a
AM		 5267 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5268 if (*local_got > 0)
5269 {
5270 if (*lgot_masks == (TLS_TLS | TLS_LD))
5271 {
5272 /* If just an LD reloc, we'll just use
5273 htab->tlsld_got.offset. */
3b36f7e6 5274 htab->tlsld_got.refcount += 1;
25dbc73a
AM		 5275 *local_got = (bfd_vma) -1;
5276 }
5277 else
5278 {
3b36f7e6 5279 unsigned int need = 0;
25dbc73a
AM		 5280 if ((*lgot_masks & TLS_TLS) != 0)
5281 {
5282 if ((*lgot_masks & TLS_GD) != 0)
3b36f7e6 5283 need += 8;
25dbc73a 5284 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
3b36f7e6 5285 need += 4;
25dbc73a 5286 if ((*lgot_masks & TLS_DTPREL) != 0)
3b36f7e6 5287 need += 4;
25dbc73a
AM		 5288 }
5289 else
3b36f7e6
AM		 5290 need += 4;
5291 *local_got = allocate_got (htab, need);
25dbc73a 5292 if (info->shared)
3b36f7e6
AM		 5293 htab->relgot->size += (need
5294 * (sizeof (Elf32_External_Rela) / 4));
25dbc73a
AM		 5295 }
5296 }
5297 else
5298 *local_got = (bfd_vma) -1;
5299 }
252b5132 5300
b7fcf6f6
AM		 5301 /* Allocate space for global sym dynamic relocs. */
5302 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5303
3b36f7e6
AM		 5304 if (htab->tlsld_got.refcount > 0)
5305 {
5306 htab->tlsld_got.offset = allocate_got (htab, 8);
5307 if (info->shared)
5308 htab->relgot->size += sizeof (Elf32_External_Rela);
5309 }
5310 else
5311 htab->tlsld_got.offset = (bfd_vma) -1;
5312
4a3dc543 5313 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM		 5314 {
5315 unsigned int g_o_t = 32768;
5316
4d962050
AM		 5317 /* If we haven't allocated the header, do so now. When we get here,
5318 for old plt/got the got size will be 0 to 32764 (not allocated),
5319 or 32780 to 65536 (header allocated). For new plt/got, the
5320 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM		 5321 if (htab->got->size <= 32768)
5322 {
5323 g_o_t = htab->got->size;
4a3dc543 5324 if (htab->plt_type == PLT_OLD)
4d962050 5325 g_o_t += 4;
3b36f7e6
AM		 5326 htab->got->size += htab->got_header_size;
5327 }
3b36f7e6
AM		 5328
5329 htab->elf.hgot->root.u.def.value = g_o_t;
5330 }
5331
d7128ce4
AM		 5332 if (htab->glink != NULL && htab->glink->size != 0)
5333 {
5334 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM		 5335 /* Space for the branch table. */
5336 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5337 /* Pad out to align the start of PLTresolve. */
5338 htab->glink->size += -htab->glink->size & 15;
d7128ce4 5339 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910
AM		 5340
5341 if (htab->emit_stub_syms)
5342 {
5343 struct elf_link_hash_entry *sh;
5344 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5345 TRUE, FALSE, FALSE);
5346 if (sh == NULL)
5347 return FALSE;
5348 if (sh->root.type == bfd_link_hash_new)
5349 {
5350 sh->root.type = bfd_link_hash_defined;
5351 sh->root.u.def.section = htab->glink;
5352 sh->root.u.def.value = htab->glink_pltresolve;
5353 sh->ref_regular = 1;
5354 sh->def_regular = 1;
5355 sh->ref_regular_nonweak = 1;
5356 sh->forced_local = 1;
5357 sh->non_elf = 0;
5358 }
5359 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5360 TRUE, FALSE, FALSE);
5361 if (sh == NULL)
5362 return FALSE;
5363 if (sh->root.type == bfd_link_hash_new)
5364 {
5365 sh->root.type = bfd_link_hash_defined;
5366 sh->root.u.def.section = htab->glink;
5367 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5368 sh->ref_regular = 1;
5369 sh->def_regular = 1;
5370 sh->ref_regular_nonweak = 1;
5371 sh->forced_local = 1;
5372 sh->non_elf = 0;
5373 }
5374 }
d7128ce4
AM		 5375 }
5376
25dbc73a
AM		 5377 /* We've now determined the sizes of the various dynamic sections.
5378 Allocate memory for them. */
5379 relocs = FALSE;
5380 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 5381 {
9d8504b1
PB		 5382 bfd_boolean strip_section = TRUE;
5383
25dbc73a
AM		 5384 if ((s->flags & SEC_LINKER_CREATED) == 0)
5385 continue;
252b5132 5386
25dbc73a 5387 if (s == htab->plt
d7128ce4 5388 || s == htab->glink
644285ef 5389 || s == htab->got
9d8504b1 5390 || s == htab->sgotplt
c456f082
AM		 5391 || s == htab->sbss
5392 || s == htab->dynbss
5393 || s == htab->dynsbss)
25dbc73a 5394 {
9d8504b1
PB		 5395 /* We'd like to strip these sections if they aren't needed, but if
5396 we've exported dynamic symbols from them we must leave them.
5397 It's too late to tell BFD to get rid of the symbols. */
7325306f 5398 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
9d8504b1 5399 strip_section = FALSE;
25dbc73a
AM		 5400 /* Strip this section if we don't need it; see the
5401 comment below. */
5402 }
c9a2f333
AM		 5403 else if (s == htab->sdata[0].section
5404 || s == htab->sdata[1].section)
25dbc73a 5405 {
c9a2f333 5406 /* Strip these too. */
25dbc73a 5407 }
0112cd26 5408 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
25dbc73a 5409 {
c456f082 5410 if (s->size != 0)
25dbc73a
AM		 5411 {
5412 /* Remember whether there are any relocation sections. */
5413 relocs = TRUE;
252b5132 5414
25dbc73a
AM		 5415 /* We use the reloc_count field as a counter if we need
5416 to copy relocs into the output file. */
5417 s->reloc_count = 0;
252b5132
RH		 5418 }
5419 }
25dbc73a
AM		 5420 else
5421 {
5422 /* It's not one of our sections, so don't allocate space. */
5423 continue;
5424 }
252b5132 5425
9d8504b1 5426 if (s->size == 0 && strip_section)
25dbc73a 5427 {
c456f082
AM		 5428 /* If we don't need this section, strip it from the
5429 output file. This is mostly to handle .rela.bss and
5430 .rela.plt. We must create both sections in
5431 create_dynamic_sections, because they must be created
5432 before the linker maps input sections to output
5433 sections. The linker does that before
5434 adjust_dynamic_symbol is called, and it is that
5435 function which decides whether anything needs to go
5436 into these sections. */
8423293d 5437 s->flags |= SEC_EXCLUDE;
25dbc73a
AM		 5438 continue;
5439 }
7fce784e 5440
d7128ce4 5441 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM		 5442 continue;
5443
25dbc73a
AM		 5444 /* Allocate memory for the section contents. */
5445 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5446 if (s->contents == NULL)
5447 return FALSE;
5448 }
252b5132 5449
25dbc73a 5450 if (htab->elf.dynamic_sections_created)
7619e7c7 5451 {
25dbc73a
AM		 5452 /* Add some entries to the .dynamic section. We fill in the
5453 values later, in ppc_elf_finish_dynamic_sections, but we
5454 must add the entries now so that we get the correct size for
5455 the .dynamic section. The DT_DEBUG entry is filled in by the
5456 dynamic linker and used by the debugger. */
5457#define add_dynamic_entry(TAG, VAL) \
5458 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 5459
25dbc73a 5460 if (info->executable)
7619e7c7 5461 {
25dbc73a
AM		 5462 if (!add_dynamic_entry (DT_DEBUG, 0))
5463 return FALSE;
7619e7c7
AM		 5464 }
5465
25dbc73a 5466 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 5467 {
25dbc73a
AM		 5468 if (!add_dynamic_entry (DT_PLTGOT, 0)
5469 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5470 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5471 || !add_dynamic_entry (DT_JMPREL, 0))
5472 return FALSE;
5473 }
7619e7c7 5474
d7128ce4
AM		 5475 if (htab->glink != NULL && htab->glink->size != 0)
5476 {
1fe44d79 5477 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4
AM		 5478 return FALSE;
5479 }
5480
25dbc73a
AM		 5481 if (relocs)
5482 {
5483 if (!add_dynamic_entry (DT_RELA, 0)
5484 || !add_dynamic_entry (DT_RELASZ, 0)
5485 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5486 return FALSE;
5487 }
7619e7c7 5488
25dbc73a
AM		 5489 /* If any dynamic relocs apply to a read-only section, then we
5490 need a DT_TEXTREL entry. */
5491 if ((info->flags & DF_TEXTREL) == 0)
625af618 5492 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 5493 info);
7619e7c7 5494
25dbc73a
AM		 5495 if ((info->flags & DF_TEXTREL) != 0)
5496 {
5497 if (!add_dynamic_entry (DT_TEXTREL, 0))
5498 return FALSE;
7619e7c7 5499 }
7a2b07ff
NS		 5500 if (htab->is_vxworks
5501 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5502 return FALSE;
5503 }
25dbc73a
AM		 5504#undef add_dynamic_entry
5505
7619e7c7
AM		 5506 return TRUE;
5507}
0eb4a168
AM		 5508
5509/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5510
5511static bfd_boolean
5512ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5513{
5514 if (h->plt.plist != NULL
5515 && !h->def_regular
5516 && (!h->pointer_equality_needed
5517 || !h->ref_regular_nonweak))
5518 return FALSE;
5519
5520 return _bfd_elf_hash_symbol (h);
5521}
25dbc73a
AM		 5522\f
5523#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5524
5525static const int shared_stub_entry[] =
5526 {
5527 0x7c0802a6, /* mflr 0 */
5528 0x429f0005, /* bcl 20, 31, .Lxxx */
5529 0x7d6802a6, /* mflr 11 */
5530 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5531 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5532 0x7c0803a6, /* mtlr 0 */
5533 0x7d6903a6, /* mtctr 11 */
5534 0x4e800420, /* bctr */
5535 };
5536
5537static const int stub_entry[] =
5538 {
5539 0x3d600000, /* lis 11,xxx@ha */
5540 0x396b0000, /* addi 11,11,xxx@l */
5541 0x7d6903a6, /* mtctr 11 */
5542 0x4e800420, /* bctr */
5543 };
5544
5545static bfd_boolean
5546ppc_elf_relax_section (bfd *abfd,
5547 asection *isec,
5548 struct bfd_link_info *link_info,
5549 bfd_boolean *again)
5550{
5551 struct one_fixup
5552 {
5553 struct one_fixup *next;
5554 asection *tsec;
5555 bfd_vma toff;
5556 bfd_vma trampoff;
5557 };
7619e7c7 5558
25dbc73a
AM		 5559 Elf_Internal_Shdr *symtab_hdr;
5560 bfd_byte *contents = NULL;
5561 Elf_Internal_Sym *isymbuf = NULL;
5562 Elf_Internal_Rela *internal_relocs = NULL;
5563 Elf_Internal_Rela *irel, *irelend;
5564 struct one_fixup *fixups = NULL;
5565 bfd_boolean changed;
d7128ce4 5566 struct ppc_elf_link_hash_table *htab;
25dbc73a 5567 bfd_size_type trampoff;
a6aa5195 5568 asection *got2;
7619e7c7 5569
25dbc73a 5570 *again = FALSE;
7619e7c7 5571
c87b5a93
AM		 5572 /* Nothing to do if there are no relocations, and no need to do
5573 anything with non-alloc sections. */
5574 if ((isec->flags & SEC_ALLOC) == 0
5575 || (isec->flags & SEC_RELOC) == 0
5576 || isec->reloc_count == 0)
25dbc73a 5577 return TRUE;
7619e7c7 5578
25dbc73a
AM		 5579 trampoff = (isec->size + 3) & (bfd_vma) -4;
5580 /* Space for a branch around any trampolines. */
5581 trampoff += 4;
7619e7c7 5582
0ffa91dd 5583 symtab_hdr = &elf_symtab_hdr (abfd);
7619e7c7 5584
25dbc73a
AM		 5585 /* Get a copy of the native relocations. */
5586 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5587 link_info->keep_memory);
5588 if (internal_relocs == NULL)
5589 goto error_return;
7619e7c7 5590
d7128ce4 5591 htab = ppc_elf_hash_table (link_info);
a6aa5195 5592 got2 = bfd_get_section_by_name (abfd, ".got2");
7619e7c7 5593
a6aa5195 5594 irelend = internal_relocs + isec->reloc_count;
25dbc73a 5595 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 5596 {
25dbc73a
AM		 5597 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5598 bfd_vma symaddr, reladdr, toff, roff;
5599 asection *tsec;
5600 struct one_fixup *f;
5601 size_t insn_offset = 0;
5602 bfd_vma max_branch_offset, val;
5603 bfd_byte *hit_addr;
5604 unsigned long t0;
5605 unsigned char sym_type;
7619e7c7 5606
25dbc73a
AM		 5607 switch (r_type)
5608 {
5609 case R_PPC_REL24:
5610 case R_PPC_LOCAL24PC:
5611 case R_PPC_PLTREL24:
5612 max_branch_offset = 1 << 25;
5613 break;
7619e7c7 5614
25dbc73a
AM		 5615 case R_PPC_REL14:
5616 case R_PPC_REL14_BRTAKEN:
5617 case R_PPC_REL14_BRNTAKEN:
5618 max_branch_offset = 1 << 15;
5619 break;
7619e7c7 5620
25dbc73a
AM		 5621 default:
5622 continue;
5623 }
7619e7c7 5624
25dbc73a
AM		 5625 /* Get the value of the symbol referred to by the reloc. */
5626 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5627 {
5628 /* A local symbol. */
5629 Elf_Internal_Sym *isym;
7fce784e 5630
25dbc73a
AM		 5631 /* Read this BFD's local symbols. */
5632 if (isymbuf == NULL)
5633 {
5634 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5635 if (isymbuf == NULL)
5636 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5637 symtab_hdr->sh_info, 0,
5638 NULL, NULL, NULL);
5639 if (isymbuf == 0)
5640 goto error_return;
5641 }
5642 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5643 if (isym->st_shndx == SHN_UNDEF)
5644 continue; /* We can't do anything with undefined symbols. */
5645 else if (isym->st_shndx == SHN_ABS)
5646 tsec = bfd_abs_section_ptr;
5647 else if (isym->st_shndx == SHN_COMMON)
5648 tsec = bfd_com_section_ptr;
5649 else
5650 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 5651
25dbc73a
AM		 5652 toff = isym->st_value;
5653 sym_type = ELF_ST_TYPE (isym->st_info);
5654 }
5655 else
5656 {
5657 /* Global symbol handling. */
5658 unsigned long indx;
5659 struct elf_link_hash_entry *h;
7619e7c7 5660
25dbc73a
AM		 5661 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5662 h = elf_sym_hashes (abfd)[indx];
7619e7c7 5663
25dbc73a
AM		 5664 while (h->root.type == bfd_link_hash_indirect
5665 || h->root.type == bfd_link_hash_warning)
5666 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5667
a6aa5195
AM		 5668 tsec = NULL;
5669 toff = 0;
25dbc73a 5670 if (r_type == R_PPC_PLTREL24
a6aa5195 5671 && htab->plt != NULL)
25dbc73a 5672 {
a6aa5195
AM		 5673 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5674
5675 if (ent != NULL)
d7128ce4 5676 {
4a3dc543 5677 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 5678 {
5679 tsec = htab->glink;
5680 toff = ent->glink_offset;
5681 }
5682 else
5683 {
5684 tsec = htab->plt;
5685 toff = ent->plt.offset;
5686 }
d7128ce4 5687 }
25dbc73a 5688 }
a6aa5195
AM		 5689 if (tsec != NULL)
5690 ;
25dbc73a
AM		 5691 else if (h->root.type == bfd_link_hash_defined
5692 || h->root.type == bfd_link_hash_defweak)
5693 {
5694 tsec = h->root.u.def.section;
5695 toff = h->root.u.def.value;
5696 }
5697 else
5698 continue;
7619e7c7 5699
25dbc73a
AM		 5700 sym_type = h->type;
5701 }
7619e7c7 5702
25dbc73a
AM		 5703 /* If the branch and target are in the same section, you have
5704 no hope of adding stubs. We'll error out later should the
5705 branch overflow. */
5706 if (tsec == isec)
5707 continue;
5708
5709 /* There probably isn't any reason to handle symbols in
5710 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5711 attribute for a code section, and we are only looking at
5712 branches. However, implement it correctly here as a
5713 reference for other target relax_section functions. */
5714 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5715 {
5716 /* At this stage in linking, no SEC_MERGE symbol has been
5717 adjusted, so all references to such symbols need to be
5718 passed through _bfd_merged_section_offset. (Later, in
5719 relocate_section, all SEC_MERGE symbols *except* for
5720 section symbols have been adjusted.)
5721
5722 gas may reduce relocations against symbols in SEC_MERGE
5723 sections to a relocation against the section symbol when
5724 the original addend was zero. When the reloc is against
5725 a section symbol we should include the addend in the
5726 offset passed to _bfd_merged_section_offset, since the
5727 location of interest is the original symbol. On the
5728 other hand, an access to "sym+addend" where "sym" is not
5729 a section symbol should not include the addend; Such an
5730 access is presumed to be an offset from "sym"; The
5731 location of interest is just "sym". */
5732 if (sym_type == STT_SECTION)
5733 toff += irel->r_addend;
7619e7c7 5734
25dbc73a
AM		 5735 toff = _bfd_merged_section_offset (abfd, &tsec,
5736 elf_section_data (tsec)->sec_info,
5737 toff);
7619e7c7 5738
25dbc73a
AM		 5739 if (sym_type != STT_SECTION)
5740 toff += irel->r_addend;
5741 }
a6aa5195
AM		 5742 /* PLTREL24 addends are special. */
5743 else if (r_type != R_PPC_PLTREL24)
25dbc73a 5744 toff += irel->r_addend;
7619e7c7 5745
7de713b9
AM		 5746 /* Attempted -shared link of non-pic code loses. */
5747 if (tsec->output_section == NULL)
5748 continue;
5749
25dbc73a 5750 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7619e7c7 5751
25dbc73a
AM		 5752 roff = irel->r_offset;
5753 reladdr = isec->output_section->vma + isec->output_offset + roff;
7619e7c7 5754
25dbc73a
AM		 5755 /* If the branch is in range, no need to do anything. */
5756 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5757 continue;
252b5132 5758
25dbc73a
AM		 5759 /* Look for an existing fixup to this address. */
5760 for (f = fixups; f ; f = f->next)
5761 if (f->tsec == tsec && f->toff == toff)
5762 break;
5763
5764 if (f == NULL)
7619e7c7 5765 {
25dbc73a
AM		 5766 size_t size;
5767 unsigned long stub_rtype;
252b5132 5768
25dbc73a
AM		 5769 val = trampoff - roff;
5770 if (val >= max_branch_offset)
5771 /* Oh dear, we can't reach a trampoline. Don't try to add
5772 one. We'll report an error later. */
5773 continue;
252b5132 5774
25dbc73a
AM		 5775 if (link_info->shared)
5776 {
5777 size = 4 * ARRAY_SIZE (shared_stub_entry);
5778 insn_offset = 12;
5779 stub_rtype = R_PPC_RELAX32PC;
5780 }
5781 else
5782 {
5783 size = 4 * ARRAY_SIZE (stub_entry);
5784 insn_offset = 0;
5785 stub_rtype = R_PPC_RELAX32;
5786 }
dc810e39 5787
25dbc73a
AM		 5788 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5789 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5790 abort ();
d7128ce4
AM		 5791 if (tsec == htab->plt
5792 || tsec == htab->glink)
25dbc73a 5793 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
252b5132 5794
25dbc73a
AM		 5795 /* Hijack the old relocation. Since we need two
5796 relocations for this use a "composite" reloc. */
5797 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5798 stub_rtype);
5799 irel->r_offset = trampoff + insn_offset;
e7d92e2e
AM		 5800 if (r_type == R_PPC_PLTREL24)
5801 irel->r_addend = 0;
252b5132 5802
25dbc73a
AM		 5803 /* Record the fixup so we don't do it again this section. */
5804 f = bfd_malloc (sizeof (*f));
5805 f->next = fixups;
5806 f->tsec = tsec;
5807 f->toff = toff;
5808 f->trampoff = trampoff;
5809 fixups = f;
252b5132 5810
25dbc73a
AM		 5811 trampoff += size;
5812 }
5813 else
5814 {
5815 val = f->trampoff - roff;
5816 if (val >= max_branch_offset)
5817 continue;
252b5132 5818
25dbc73a
AM		 5819 /* Nop out the reloc, since we're finalizing things here. */
5820 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5821 }
252b5132 5822
25dbc73a
AM		 5823 /* Get the section contents. */
5824 if (contents == NULL)
5825 {
5826 /* Get cached copy if it exists. */
5827 if (elf_section_data (isec)->this_hdr.contents != NULL)
5828 contents = elf_section_data (isec)->this_hdr.contents;
5829 else
5830 {
5831 /* Go get them off disk. */
5832 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5833 goto error_return;
5834 }
5835 }
252b5132 5836
25dbc73a
AM		 5837 /* Fix up the existing branch to hit the trampoline. */
5838 hit_addr = contents + roff;
5839 switch (r_type)
5840 {
5841 case R_PPC_REL24:
5842 case R_PPC_LOCAL24PC:
5843 case R_PPC_PLTREL24:
5844 t0 = bfd_get_32 (abfd, hit_addr);
5845 t0 &= ~0x3fffffc;
5846 t0 |= val & 0x3fffffc;
5847 bfd_put_32 (abfd, t0, hit_addr);
5848 break;
252b5132 5849
25dbc73a
AM		 5850 case R_PPC_REL14:
5851 case R_PPC_REL14_BRTAKEN:
5852 case R_PPC_REL14_BRNTAKEN:
5853 t0 = bfd_get_32 (abfd, hit_addr);
5854 t0 &= ~0xfffc;
5855 t0 |= val & 0xfffc;
5856 bfd_put_32 (abfd, t0, hit_addr);
5857 break;
5858 }
5859 }
252b5132 5860
25dbc73a
AM		 5861 /* Write out the trampolines. */
5862 changed = fixups != NULL;
5863 if (fixups != NULL)
5864 {
5865 const int *stub;
5866 bfd_byte *dest;
5867 bfd_vma val;
5868 int i, size;
252b5132 5869
25dbc73a
AM		 5870 do
5871 {
5872 struct one_fixup *f = fixups;
5873 fixups = fixups->next;
5874 free (f);
5875 }
5876 while (fixups);
252b5132 5877
515ef31d 5878 contents = bfd_realloc_or_free (contents, trampoff);
25dbc73a
AM		 5879 if (contents == NULL)
5880 goto error_return;
252b5132 5881
25dbc73a
AM		 5882 isec->size = (isec->size + 3) & (bfd_vma) -4;
5883 /* Branch around the trampolines. */
e7d92e2e 5884 val = B + trampoff - isec->size;
25dbc73a
AM		 5885 dest = contents + isec->size;
5886 isec->size = trampoff;
5887 bfd_put_32 (abfd, val, dest);
5888 dest += 4;
252b5132 5889
25dbc73a
AM		 5890 if (link_info->shared)
5891 {
5892 stub = shared_stub_entry;
5893 size = ARRAY_SIZE (shared_stub_entry);
5894 }
5895 else
5896 {
5897 stub = stub_entry;
5898 size = ARRAY_SIZE (stub_entry);
5899 }
252b5132 5900
25dbc73a
AM		 5901 i = 0;
5902 while (dest < contents + trampoff)
252b5132 5903 {
25dbc73a
AM		 5904 bfd_put_32 (abfd, stub[i], dest);
5905 i++;
5906 if (i == size)
5907 i = 0;
5908 dest += 4;
252b5132 5909 }
25dbc73a 5910 BFD_ASSERT (i == 0);
252b5132
RH		 5911 }
5912
25dbc73a
AM		 5913 if (isymbuf != NULL
5914 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 5915 {
25dbc73a
AM		 5916 if (! link_info->keep_memory)
5917 free (isymbuf);
252b5132 5918 else
25dbc73a
AM		 5919 {
5920 /* Cache the symbols for elf_link_input_bfd. */
5921 symtab_hdr->contents = (unsigned char *) isymbuf;
5922 }
252b5132
RH		 5923 }
5924
25dbc73a
AM		 5925 if (contents != NULL
5926 && elf_section_data (isec)->this_hdr.contents != contents)
5927 {
5928 if (!changed && !link_info->keep_memory)
5929 free (contents);
5930 else
5931 {
5932 /* Cache the section contents for elf_link_input_bfd. */
5933 elf_section_data (isec)->this_hdr.contents = contents;
5934 }
5935 }
252b5132 5936
25dbc73a
AM		 5937 if (elf_section_data (isec)->relocs != internal_relocs)
5938 {
5939 if (!changed)
5940 free (internal_relocs);
5941 else
5942 elf_section_data (isec)->relocs = internal_relocs;
5943 }
252b5132 5944
25dbc73a 5945 *again = changed;
b34976b6 5946 return TRUE;
25dbc73a
AM		 5947
5948 error_return:
5949 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5950 free (isymbuf);
5951 if (contents != NULL
5952 && elf_section_data (isec)->this_hdr.contents != contents)
5953 free (contents);
5954 if (internal_relocs != NULL
5955 && elf_section_data (isec)->relocs != internal_relocs)
5956 free (internal_relocs);
5957 return FALSE;
252b5132 5958}
252b5132 5959\f
8a696751
AM		 5960/* What to do when ld finds relocations against symbols defined in
5961 discarded sections. */
5962
5963static unsigned int
5964ppc_elf_action_discarded (asection *sec)
5965{
5966 if (strcmp (".fixup", sec->name) == 0)
5967 return 0;
5968
5969 if (strcmp (".got2", sec->name) == 0)
5970 return 0;
5971
5972 return _bfd_elf_default_action_discarded (sec);
5973}
c9a2f333 5974\f
25dbc73a 5975/* Fill in the address for a pointer generated in a linker section. */
252b5132 5976
25dbc73a 5977static bfd_vma
76750a2f 5978elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM		 5979 elf_linker_section_t *lsect,
5980 struct elf_link_hash_entry *h,
5981 bfd_vma relocation,
2bb04cf2 5982 const Elf_Internal_Rela *rel)
25dbc73a
AM		 5983{
5984 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 5985
25dbc73a 5986 BFD_ASSERT (lsect != NULL);
252b5132 5987
25dbc73a 5988 if (h != NULL)
252b5132 5989 {
25dbc73a
AM		 5990 /* Handle global symbol. */
5991 struct ppc_elf_link_hash_entry *eh;
252b5132 5992
25dbc73a 5993 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM		 5994 BFD_ASSERT (eh->elf.def_regular);
5995 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM		 5996 }
5997 else
5998 {
5999 /* Handle local symbol. */
6000 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 6001
0c8d6e5c 6002 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 6003 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM		 6004 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6005 }
252b5132 6006
76750a2f
AM		 6007 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6008 rel->r_addend,
6009 lsect);
6010 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 6011
76750a2f
AM		 6012 /* Offset will always be a multiple of four, so use the bottom bit
6013 as a "written" flag. */
6014 if ((linker_section_ptr->offset & 1) == 0)
6015 {
6016 bfd_put_32 (lsect->section->owner,
6017 relocation + linker_section_ptr->addend,
6018 lsect->section->contents + linker_section_ptr->offset);
6019 linker_section_ptr->offset += 1;
252b5132
RH		 6020 }
6021
25dbc73a 6022 relocation = (lsect->section->output_offset
76750a2f 6023 + linker_section_ptr->offset - 1
c9a2f333 6024 - 0x8000);
252b5132 6025
25dbc73a
AM		 6026#ifdef DEBUG
6027 fprintf (stderr,
6028 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6029 lsect->name, (long) relocation, (long) relocation);
6030#endif
252b5132 6031
25dbc73a
AM		 6032 /* Subtract out the addend, because it will get added back in by the normal
6033 processing. */
6034 return relocation - linker_section_ptr->addend;
252b5132 6035}
25dbc73a 6036
252b5132
RH		 6037/* The RELOCATE_SECTION function is called by the ELF backend linker
6038 to handle the relocations for a section.
6039
6040 The relocs are always passed as Rela structures; if the section
6041 actually uses Rel structures, the r_addend field will always be
6042 zero.
6043
6044 This function is responsible for adjust the section contents as
6045 necessary, and (if using Rela relocs and generating a
1049f94e 6046 relocatable output file) adjusting the reloc addend as
252b5132
RH		 6047 necessary.
6048
6049 This function does not have to worry about setting the reloc
6050 address or the reloc symbol index.
6051
6052 LOCAL_SYMS is a pointer to the swapped in local symbols.
6053
6054 LOCAL_SECTIONS is an array giving the section in the input file
6055 corresponding to the st_shndx field of each local symbol.
6056
6057 The global hash table entry for the global symbols can be found
6058 via elf_sym_hashes (input_bfd).
6059
1049f94e 6060 When generating relocatable output, this function must handle
252b5132
RH		 6061 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6062 going to be the section symbol corresponding to the output
6063 section, which means that the addend must be adjusted
6064 accordingly. */
6065
b34976b6 6066static bfd_boolean
55fd94b0
AM		 6067ppc_elf_relocate_section (bfd *output_bfd,
6068 struct bfd_link_info *info,
6069 bfd *input_bfd,
6070 asection *input_section,
6071 bfd_byte *contents,
6072 Elf_Internal_Rela *relocs,
6073 Elf_Internal_Sym *local_syms,
6074 asection **local_sections)
252b5132 6075{
7619e7c7
AM		 6076 Elf_Internal_Shdr *symtab_hdr;
6077 struct elf_link_hash_entry **sym_hashes;
6078 struct ppc_elf_link_hash_table *htab;
6079 Elf_Internal_Rela *rel;
6080 Elf_Internal_Rela *relend;
6081 Elf_Internal_Rela outrel;
6082 bfd_byte *loc;
a6aa5195 6083 asection *got2, *sreloc = NULL;
252b5132 6084 bfd_vma *local_got_offsets;
b34976b6 6085 bfd_boolean ret = TRUE;
4fe5ca5b 6086 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 6087 bfd_boolean is_vxworks_tls;
b34976b6 6088
252b5132 6089#ifdef DEBUG
d003868e
AM		 6090 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6091 "%ld relocations%s",
6092 input_bfd, input_section,
6093 (long) input_section->reloc_count,
6094 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH		 6095#endif
6096
a6aa5195
AM		 6097 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6098
e47cd125 6099 /* Initialize howto table if not already done. */
8da6118f 6100 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH		 6101 ppc_elf_howto_init ();
6102
7619e7c7 6103 htab = ppc_elf_hash_table (info);
252b5132 6104 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 6105 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 6106 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS		 6107 /* We have to handle relocations in vxworks .tls_vars sections
6108 specially, because the dynamic loader is 'weird'. */
6109 is_vxworks_tls = (htab->is_vxworks && info->shared
6110 && !strcmp (input_section->output_section->name,
6111 ".tls_vars"));
7619e7c7
AM		 6112 rel = relocs;
6113 relend = relocs + input_section->reloc_count;
252b5132
RH		 6114 for (; rel < relend; rel++)
6115 {
7619e7c7
AM		 6116 enum elf_ppc_reloc_type r_type;
6117 bfd_vma addend;
6118 bfd_reloc_status_type r;
6119 Elf_Internal_Sym *sym;
6120 asection *sec;
6121 struct elf_link_hash_entry *h;
6122 const char *sym_name;
252b5132
RH		 6123 reloc_howto_type *howto;
6124 unsigned long r_symndx;
6125 bfd_vma relocation;
7619e7c7 6126 bfd_vma branch_bit, insn, from;
7619e7c7
AM		 6127 bfd_boolean unresolved_reloc;
6128 bfd_boolean warned;
6129 unsigned int tls_type, tls_mask, tls_gd;
6130
55fd94b0
AM		 6131 r_type = ELF32_R_TYPE (rel->r_info);
6132 sym = NULL;
6133 sec = NULL;
6134 h = NULL;
7619e7c7
AM		 6135 unresolved_reloc = FALSE;
6136 warned = FALSE;
252b5132 6137 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 6138
252b5132
RH		 6139 if (r_symndx < symtab_hdr->sh_info)
6140 {
6141 sym = local_syms + r_symndx;
6142 sec = local_sections[r_symndx];
26c61ae5 6143 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 6144
8517fae7 6145 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 6146 }
6147 else
6148 {
b2a8e766
AM		 6149 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6150 r_symndx, symtab_hdr, sym_hashes,
6151 h, sec, relocation,
6152 unresolved_reloc, warned);
9abc968f 6153
252b5132 6154 sym_name = h->root.root.string;
7619e7c7
AM		 6155 }
6156
ab96bf03
AM		 6157 if (sec != NULL && elf_discarded_section (sec))
6158 {
6159 /* For relocs against symbols from removed linkonce sections,
6160 or sections discarded by a linker script, we just want the
6161 section contents zeroed. Avoid any special processing. */
6162 howto = NULL;
6163 if (r_type < R_PPC_max)
6164 howto = ppc_elf_howto_table[r_type];
6165 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6166 rel->r_info = 0;
6167 rel->r_addend = 0;
6168 continue;
6169 }
6170
6171 if (info->relocatable)
6172 {
6173 if (got2 != NULL
6174 && r_type == R_PPC_PLTREL24
6175 && rel->r_addend >= 32768)
6176 {
6177 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6178 addend specifies the GOT pointer offset within .got2. */
6179 rel->r_addend += got2->output_offset;
6180 }
6181 continue;
6182 }
6183
7619e7c7
AM		 6184 /* TLS optimizations. Replace instruction sequences and relocs
6185 based on information we collected in tls_optimize. We edit
6186 RELOCS so that --emit-relocs will output something sensible
6187 for the final instruction stream. */
6188 tls_mask = 0;
6189 tls_gd = 0;
6190 if (IS_PPC_TLS_RELOC (r_type))
6191 {
6192 if (h != NULL)
6193 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6194 else if (local_got_offsets != NULL)
6195 {
6196 char *lgot_masks;
6197 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
6198 tls_mask = lgot_masks[r_symndx];
6199 }
6200 }
6201
6202 /* Ensure reloc mapping code below stays sane. */
6203 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6204 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6205 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6206 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6207 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6208 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6209 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6210 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6211 abort ();
6212 switch (r_type)
6213 {
6214 default:
6215 break;
6216
6217 case R_PPC_GOT_TPREL16:
6218 case R_PPC_GOT_TPREL16_LO:
6219 if (tls_mask != 0
6220 && (tls_mask & TLS_TPREL) == 0)
6221 {
6222 bfd_vma insn;
4fe5ca5b 6223 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7619e7c7
AM		 6224 insn &= 31 << 21;
6225 insn |= 0x3c020000; /* addis 0,2,0 */
4fe5ca5b 6226 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7619e7c7
AM		 6227 r_type = R_PPC_TPREL16_HA;
6228 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6229 }
6230 break;
6231
6232 case R_PPC_TLS:
6233 if (tls_mask != 0
6234 && (tls_mask & TLS_TPREL) == 0)
6235 {
6236 bfd_vma insn, rtra;
6237 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6238 if ((insn & ((31 << 26) | (31 << 11)))
6239 == ((31 << 26) | (2 << 11)))
6240 rtra = insn & ((1 << 26) - (1 << 16));
6241 else if ((insn & ((31 << 26) | (31 << 16)))
6242 == ((31 << 26) | (2 << 16)))
6243 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6244 else
6245 abort ();
6246 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6247 /* add -> addi. */
6248 insn = 14 << 26;
6249 else if ((insn & (31 << 1)) == 23 << 1
6250 && ((insn & (31 << 6)) < 14 << 6
6251 || ((insn & (31 << 6)) >= 16 << 6
6252 && (insn & (31 << 6)) < 24 << 6)))
6253 /* load and store indexed -> dform. */
6254 insn = (32 | ((insn >> 6) & 31)) << 26;
6255 else if ((insn & (31 << 1)) == 21 << 1
6256 && (insn & (0x1a << 6)) == 0)
6257 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6258 insn = (((58 | ((insn >> 6) & 4)) << 26)
6259 | ((insn >> 6) & 1));
6260 else if ((insn & (31 << 1)) == 21 << 1
6261 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6262 /* lwax -> lwa. */
6263 insn = (58 << 26) | 2;
6264 else
6265 abort ();
6266 insn |= rtra;
6267 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6268 r_type = R_PPC_TPREL16_LO;
6269 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 6270
7619e7c7 6271 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM		 6272 PPC_TPREL16_LO which is at low-order half-word. */
6273 rel->r_offset += d_offset;
7619e7c7
AM		 6274 }
6275 break;
6276
6277 case R_PPC_GOT_TLSGD16_HI:
6278 case R_PPC_GOT_TLSGD16_HA:
6279 tls_gd = TLS_TPRELGD;
6280 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6281 goto tls_gdld_hi;
6282 break;
6283
6284 case R_PPC_GOT_TLSLD16_HI:
6285 case R_PPC_GOT_TLSLD16_HA:
6286 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6287 {
6288 tls_gdld_hi:
6289 if ((tls_mask & tls_gd) != 0)
6290 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6291 + R_PPC_GOT_TPREL16);
6292 else
6293 {
6294 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 6295 rel->r_offset -= d_offset;
7619e7c7
AM		 6296 r_type = R_PPC_NONE;
6297 }
6298 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6299 }
6300 break;
6301
6302 case R_PPC_GOT_TLSGD16:
6303 case R_PPC_GOT_TLSGD16_LO:
6304 tls_gd = TLS_TPRELGD;
6305 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 6306 goto tls_ldgd_opt;
7619e7c7
AM		 6307 break;
6308
6309 case R_PPC_GOT_TLSLD16:
6310 case R_PPC_GOT_TLSLD16_LO:
6311 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6312 {
b7fcf6f6
AM		 6313 bfd_vma insn1, insn2;
6314 bfd_vma offset;
7619e7c7 6315
b7fcf6f6
AM		 6316 tls_ldgd_opt:
6317 offset = rel[1].r_offset;
6318 insn1 = bfd_get_32 (output_bfd,
6319 contents + rel->r_offset - d_offset);
6320 if ((tls_mask & tls_gd) != 0)
6321 {
6322 /* IE */
6323 insn1 &= (1 << 26) - 1;
6324 insn1 |= 32 << 26; /* lwz */
6325 insn2 = 0x7c631214; /* add 3,3,2 */
6326 rel[1].r_info
6327 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info), R_PPC_NONE);
6328 rel[1].r_addend = 0;
6329 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6330 + R_PPC_GOT_TPREL16);
6331 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6332 }
6333 else
6334 {
6335 /* LE */
6336 insn1 = 0x3c620000; /* addis 3,2,0 */
6337 insn2 = 0x38630000; /* addi 3,3,0 */
7619e7c7
AM		 6338 if (tls_gd == 0)
6339 {
b7fcf6f6 6340 /* Was an LD reloc. */
1d483afe
AM		 6341 for (r_symndx = 0;
6342 r_symndx < symtab_hdr->sh_info;
6343 r_symndx++)
6344 if (local_sections[r_symndx] == sec)
6345 break;
6346 if (r_symndx >= symtab_hdr->sh_info)
6347 r_symndx = 0;
b7fcf6f6 6348 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
1d483afe
AM		 6349 if (r_symndx != 0)
6350 rel->r_addend -= (local_syms[r_symndx].st_value
6351 + sec->output_offset
6352 + sec->output_section->vma);
7619e7c7 6353 }
b7fcf6f6
AM		 6354 r_type = R_PPC_TPREL16_HA;
6355 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6356 rel[1].r_info = ELF32_R_INFO (r_symndx,
6357 R_PPC_TPREL16_LO);
6358 rel[1].r_offset += d_offset;
6359 rel[1].r_addend = rel->r_addend;
6360 }
6361 bfd_put_32 (output_bfd, insn1,
6362 contents + rel->r_offset - d_offset);
6363 bfd_put_32 (output_bfd, insn2, contents + offset);
6364 if (tls_gd == 0)
6365 {
6366 /* We changed the symbol on an LD reloc. Start over
6367 in order to get h, sym, sec etc. right. */
6368 rel--;
6369 continue;
7619e7c7 6370 }
252b5132 6371 }
7619e7c7
AM		 6372 break;
6373 }
6374
6375 /* Handle other relocations that tweak non-addend part of insn. */
6376 branch_bit = 0;
6377 switch (r_type)
6378 {
6379 default:
6380 break;
6381
6382 /* Branch taken prediction relocations. */
6383 case R_PPC_ADDR14_BRTAKEN:
6384 case R_PPC_REL14_BRTAKEN:
6385 branch_bit = BRANCH_PREDICT_BIT;
6386 /* Fall thru */
6387
4cc11e76 6388 /* Branch not taken prediction relocations. */
7619e7c7
AM		 6389 case R_PPC_ADDR14_BRNTAKEN:
6390 case R_PPC_REL14_BRNTAKEN:
6391 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6392 insn &= ~BRANCH_PREDICT_BIT;
6393 insn |= branch_bit;
6394
6395 from = (rel->r_offset
6396 + input_section->output_offset
6397 + input_section->output_section->vma);
6398
6399 /* Invert 'y' bit if not the default. */
6400 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6401 insn ^= BRANCH_PREDICT_BIT;
6402
6403 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6404 break;
252b5132
RH		 6405 }
6406
7619e7c7
AM		 6407 addend = rel->r_addend;
6408 tls_type = 0;
6409 howto = NULL;
55fd94b0
AM		 6410 if (r_type < R_PPC_max)
6411 howto = ppc_elf_howto_table[r_type];
7619e7c7 6412 switch (r_type)
252b5132
RH		 6413 {
6414 default:
7619e7c7 6415 (*_bfd_error_handler)
d003868e
AM		 6416 (_("%B: unknown relocation type %d for symbol %s"),
6417 input_bfd, (int) r_type, sym_name);
252b5132
RH		 6418
6419 bfd_set_error (bfd_error_bad_value);
b34976b6 6420 ret = FALSE;
252b5132
RH		 6421 continue;
6422
7619e7c7
AM		 6423 case R_PPC_NONE:
6424 case R_PPC_TLS:
6425 case R_PPC_EMB_MRKREF:
6426 case R_PPC_GNU_VTINHERIT:
6427 case R_PPC_GNU_VTENTRY:
7595d193
L		 6428 continue;
6429
7619e7c7
AM		 6430 /* GOT16 relocations. Like an ADDR16 using the symbol's
6431 address in the GOT as relocation value instead of the
6432 symbol's value itself. Also, create a GOT entry for the
6433 symbol and put the symbol value there. */
6434 case R_PPC_GOT_TLSGD16:
6435 case R_PPC_GOT_TLSGD16_LO:
6436 case R_PPC_GOT_TLSGD16_HI:
6437 case R_PPC_GOT_TLSGD16_HA:
6438 tls_type = TLS_TLS | TLS_GD;
6439 goto dogot;
6440
6441 case R_PPC_GOT_TLSLD16:
6442 case R_PPC_GOT_TLSLD16_LO:
6443 case R_PPC_GOT_TLSLD16_HI:
6444 case R_PPC_GOT_TLSLD16_HA:
6445 tls_type = TLS_TLS | TLS_LD;
6446 goto dogot;
6447
6448 case R_PPC_GOT_TPREL16:
6449 case R_PPC_GOT_TPREL16_LO:
6450 case R_PPC_GOT_TPREL16_HI:
6451 case R_PPC_GOT_TPREL16_HA:
6452 tls_type = TLS_TLS | TLS_TPREL;
6453 goto dogot;
6454
6455 case R_PPC_GOT_DTPREL16:
6456 case R_PPC_GOT_DTPREL16_LO:
6457 case R_PPC_GOT_DTPREL16_HI:
6458 case R_PPC_GOT_DTPREL16_HA:
6459 tls_type = TLS_TLS | TLS_DTPREL;
6460 goto dogot;
6461
6462 case R_PPC_GOT16:
6463 case R_PPC_GOT16_LO:
6464 case R_PPC_GOT16_HI:
6465 case R_PPC_GOT16_HA:
6466 dogot:
6467 {
6468 /* Relocation is to the entry for this symbol in the global
6469 offset table. */
6470 bfd_vma off;
6471 bfd_vma *offp;
6472 unsigned long indx;
6473
6474 if (htab->got == NULL)
6475 abort ();
6476
6477 indx = 0;
6478 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 6479 && (h == NULL
f5385ebf 6480 || !h->def_dynamic))
7619e7c7
AM		 6481 offp = &htab->tlsld_got.offset;
6482 else if (h != NULL)
6483 {
6484 bfd_boolean dyn;
6485 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 6486 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM		 6487 || (info->shared
6488 && SYMBOL_REFERENCES_LOCAL (info, h)))
6489 /* This is actually a static link, or it is a
6490 -Bsymbolic link and the symbol is defined
6491 locally, or the symbol was forced to be local
6492 because of a version file. */
6493 ;
6494 else
6495 {
6496 indx = h->dynindx;
6497 unresolved_reloc = FALSE;
6498 }
6499 offp = &h->got.offset;
6500 }
6501 else
6502 {
6503 if (local_got_offsets == NULL)
6504 abort ();
6505 offp = &local_got_offsets[r_symndx];
6506 }
6507
6508 /* The offset must always be a multiple of 4. We use the
6509 least significant bit to record whether we have already
6510 processed this entry. */
6511 off = *offp;
6512 if ((off & 1) != 0)
6513 off &= ~1;
6514 else
6515 {
70bccea4
AM		 6516 unsigned int tls_m = (tls_mask
6517 & (TLS_LD | TLS_GD | TLS_DTPREL
6518 | TLS_TPREL | TLS_TPRELGD));
6519
6520 if (offp == &htab->tlsld_got.offset)
6521 tls_m = TLS_LD;
6522 else if (h == NULL
f5385ebf 6523 || !h->def_dynamic)
70bccea4
AM		 6524 tls_m &= ~TLS_LD;
6525
6526 /* We might have multiple got entries for this sym.
6527 Initialize them all. */
6528 do
7619e7c7 6529 {
70bccea4
AM		 6530 int tls_ty = 0;
6531
6532 if ((tls_m & TLS_LD) != 0)
7619e7c7 6533 {
70bccea4
AM		 6534 tls_ty = TLS_TLS | TLS_LD;
6535 tls_m &= ~TLS_LD;
6536 }
6537 else if ((tls_m & TLS_GD) != 0)
6538 {
6539 tls_ty = TLS_TLS | TLS_GD;
6540 tls_m &= ~TLS_GD;
6541 }
6542 else if ((tls_m & TLS_DTPREL) != 0)
6543 {
6544 tls_ty = TLS_TLS | TLS_DTPREL;
6545 tls_m &= ~TLS_DTPREL;
6546 }
6547 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6548 {
6549 tls_ty = TLS_TLS | TLS_TPREL;
6550 tls_m = 0;
7619e7c7 6551 }
7619e7c7 6552
70bccea4 6553 /* Generate relocs for the dynamic linker. */
4e795f50
AM		 6554 if ((info->shared || indx != 0)
6555 && (h == NULL
6556 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6557 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 6558 {
70bccea4
AM		 6559 outrel.r_offset = (htab->got->output_section->vma
6560 + htab->got->output_offset
6561 + off);
e515b051 6562 outrel.r_addend = 0;
70bccea4
AM		 6563 if (tls_ty & (TLS_LD | TLS_GD))
6564 {
6565 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM		 6566 if (tls_ty == (TLS_TLS | TLS_GD))
6567 {
6568 loc = htab->relgot->contents;
6569 loc += (htab->relgot->reloc_count++
6570 * sizeof (Elf32_External_Rela));
6571 bfd_elf32_swap_reloca_out (output_bfd,
6572 &outrel, loc);
e515b051 6573 outrel.r_offset += 4;
70bccea4
AM		 6574 outrel.r_info
6575 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM		 6576 }
6577 }
6578 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6579 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6580 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6581 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6582 else if (indx == 0)
6583 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6584 else
6585 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
70bccea4 6586 if (indx == 0)
e515b051
AM		 6587 {
6588 outrel.r_addend += relocation;
6589 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 6590 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 6591 }
70bccea4
AM		 6592 loc = htab->relgot->contents;
6593 loc += (htab->relgot->reloc_count++
6594 * sizeof (Elf32_External_Rela));
6595 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM		 6596 }
6597
70bccea4
AM		 6598 /* Init the .got section contents if we're not
6599 emitting a reloc. */
6600 else
7619e7c7 6601 {
70bccea4
AM		 6602 bfd_vma value = relocation;
6603
7b609f53
AM		 6604 if (tls_ty == (TLS_TLS | TLS_LD))
6605 value = 1;
6606 else if (tls_ty != 0)
70bccea4 6607 {
e1918d23 6608 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 6609 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 6610 value += DTP_OFFSET - TP_OFFSET;
70bccea4 6611
7b609f53
AM		 6612 if (tls_ty == (TLS_TLS | TLS_GD))
6613 {
6614 bfd_put_32 (output_bfd, value,
6615 htab->got->contents + off + 4);
6616 value = 1;
6617 }
70bccea4 6618 }
70bccea4
AM		 6619 bfd_put_32 (output_bfd, value,
6620 htab->got->contents + off);
7619e7c7 6621 }
70bccea4
AM		 6622
6623 off += 4;
6624 if (tls_ty & (TLS_LD | TLS_GD))
6625 off += 4;
7619e7c7 6626 }
70bccea4
AM		 6627 while (tls_m != 0);
6628
6629 off = *offp;
6630 *offp = off | 1;
7619e7c7
AM		 6631 }
6632
6633 if (off >= (bfd_vma) -2)
6634 abort ();
6635
70bccea4
AM		 6636 if ((tls_type & TLS_TLS) != 0)
6637 {
6638 if (tls_type != (TLS_TLS | TLS_LD))
6639 {
6640 if ((tls_mask & TLS_LD) != 0
6641 && !(h == NULL
f5385ebf 6642 || !h->def_dynamic))
70bccea4
AM		 6643 off += 8;
6644 if (tls_type != (TLS_TLS | TLS_GD))
6645 {
6646 if ((tls_mask & TLS_GD) != 0)
6647 off += 8;
6648 if (tls_type != (TLS_TLS | TLS_DTPREL))
6649 {
6650 if ((tls_mask & TLS_DTPREL) != 0)
6651 off += 4;
6652 }
6653 }
6654 }
6655 }
6656
3b36f7e6
AM		 6657 relocation = htab->got->output_offset + off;
6658 relocation -= htab->elf.hgot->root.u.def.value;
7619e7c7
AM		 6659
6660 /* Addends on got relocations don't make much sense.
6661 x+off@got is actually x@got+off, and since the got is
6662 generated by a hash table traversal, the value in the
6663 got at entry m+n bears little relation to the entry m. */
6664 if (addend != 0)
6665 (*_bfd_error_handler)
d003868e
AM		 6666 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6667 input_bfd,
6668 input_section,
7619e7c7 6669 (long) rel->r_offset,
7b609f53 6670 howto->name,
7619e7c7
AM		 6671 sym_name);
6672 }
70bccea4 6673 break;
7619e7c7 6674
252b5132 6675 /* Relocations that need no special processing. */
7619e7c7 6676 case R_PPC_LOCAL24PC:
252b5132
RH		 6677 /* It makes no sense to point a local relocation
6678 at a symbol not in this object. */
7b609f53 6679 if (unresolved_reloc)
252b5132 6680 {
464e1740
ILT		 6681 if (! (*info->callbacks->undefined_symbol) (info,
6682 h->root.root.string,
6683 input_bfd,
6684 input_section,
5cc7c785 6685 rel->r_offset,
b34976b6
AM		 6686 TRUE))
6687 return FALSE;
252b5132
RH		 6688 continue;
6689 }
6690 break;
6691
7619e7c7
AM		 6692 case R_PPC_DTPREL16:
6693 case R_PPC_DTPREL16_LO:
6694 case R_PPC_DTPREL16_HI:
6695 case R_PPC_DTPREL16_HA:
e1918d23 6696 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 6697 break;
6698
70bccea4
AM		 6699 /* Relocations that may need to be propagated if this is a shared
6700 object. */
7619e7c7
AM		 6701 case R_PPC_TPREL16:
6702 case R_PPC_TPREL16_LO:
6703 case R_PPC_TPREL16_HI:
6704 case R_PPC_TPREL16_HA:
e1918d23 6705 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM		 6706 /* The TPREL16 relocs shouldn't really be used in shared
6707 libs as they will result in DT_TEXTREL being set, but
6708 support them anyway. */
6709 goto dodyn;
6710
6711 case R_PPC_TPREL32:
e1918d23 6712 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM		 6713 goto dodyn;
6714
6715 case R_PPC_DTPREL32:
e1918d23 6716 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 6717 goto dodyn;
6718
e515b051
AM		 6719 case R_PPC_DTPMOD32:
6720 relocation = 1;
6721 addend = 0;
6722 goto dodyn;
6723
d7128ce4
AM		 6724 case R_PPC_REL16:
6725 case R_PPC_REL16_LO:
6726 case R_PPC_REL16_HI:
6727 case R_PPC_REL16_HA:
6728 break;
6729
7619e7c7 6730 case R_PPC_REL32:
625af618
AM		 6731 if (h == NULL || h == htab->elf.hgot)
6732 break;
6733 /* fall through */
6734
6735 case R_PPC_ADDR32:
6736 case R_PPC_ADDR16:
6737 case R_PPC_ADDR16_LO:
6738 case R_PPC_ADDR16_HI:
6739 case R_PPC_ADDR16_HA:
6740 case R_PPC_UADDR32:
6741 case R_PPC_UADDR16:
6742 goto dodyn;
6743
6744 case R_PPC_REL24:
7619e7c7
AM		 6745 case R_PPC_REL14:
6746 case R_PPC_REL14_BRTAKEN:
6747 case R_PPC_REL14_BRNTAKEN:
252b5132
RH		 6748 /* If these relocations are not to a named symbol, they can be
6749 handled right here, no need to bother the dynamic linker. */
89200bf8 6750 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 6751 || h == htab->elf.hgot)
252b5132 6752 break;
70bccea4 6753 /* fall through */
252b5132 6754
7619e7c7 6755 case R_PPC_ADDR24:
7619e7c7
AM		 6756 case R_PPC_ADDR14:
6757 case R_PPC_ADDR14_BRTAKEN:
6758 case R_PPC_ADDR14_BRNTAKEN:
625af618
AM		 6759 if (h != NULL && !info->shared)
6760 break;
6761 /* fall through */
6762
7619e7c7 6763 dodyn:
3348747a
NS		 6764 if ((input_section->flags & SEC_ALLOC) == 0
6765 || is_vxworks_tls)
c87b5a93 6766 break;
c87b5a93 6767
ee05f2fe 6768 if ((info->shared
89200bf8
AM		 6769 && !(h != NULL
6770 && ((h->root.type == bfd_link_hash_undefined
6771 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6772 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6773 || (h->root.type == bfd_link_hash_undefweak
6774 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 6775 && (must_be_dyn_reloc (info, r_type)
f6c52c13 6776 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM		 6777 || (ELIMINATE_COPY_RELOCS
6778 && !info->shared
ee05f2fe
AM		 6779 && h != NULL
6780 && h->dynindx != -1
f5385ebf 6781 && !h->non_got_ref
f5385ebf 6782 && !h->def_regular))
252b5132 6783 {
0bb2d96a 6784 int skip;
252b5132
RH		 6785
6786#ifdef DEBUG
55fd94b0
AM		 6787 fprintf (stderr, "ppc_elf_relocate_section needs to "
6788 "create relocation for %s\n",
70bccea4
AM		 6789 (h && h->root.root.string
6790 ? h->root.root.string : "<unknown>"));
252b5132
RH		 6791#endif
6792
6793 /* When generating a shared object, these relocations
70bccea4
AM		 6794 are copied into the output file to be resolved at run
6795 time. */
252b5132
RH		 6796 if (sreloc == NULL)
6797 {
6798 const char *name;
6799
6800 name = (bfd_elf_string_from_elf_section
6801 (input_bfd,
6802 elf_elfheader (input_bfd)->e_shstrndx,
6803 elf_section_data (input_section)->rel_hdr.sh_name));
6804 if (name == NULL)
b34976b6 6805 return FALSE;
252b5132 6806
0112cd26 6807 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
252b5132
RH		 6808 && strcmp (bfd_get_section_name (input_bfd,
6809 input_section),
6810 name + 5) == 0);
6811
7619e7c7 6812 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
252b5132
RH		 6813 BFD_ASSERT (sreloc != NULL);
6814 }
6815
0bb2d96a 6816 skip = 0;
c629eae0
JJ		 6817 outrel.r_offset =
6818 _bfd_elf_section_offset (output_bfd, info, input_section,
6819 rel->r_offset);
0bb2d96a
JJ		 6820 if (outrel.r_offset == (bfd_vma) -1
6821 || outrel.r_offset == (bfd_vma) -2)
6822 skip = (int) outrel.r_offset;
252b5132
RH		 6823 outrel.r_offset += (input_section->output_section->vma
6824 + input_section->output_offset);
6825
6826 if (skip)
6827 memset (&outrel, 0, sizeof outrel);
89200bf8
AM		 6828 else if ((h != NULL
6829 && (h->root.type == bfd_link_hash_undefined
6830 || h->root.type == bfd_link_hash_undefweak))
6831 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 6832 {
7619e7c7 6833 unresolved_reloc = FALSE;
252b5132
RH		 6834 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6835 outrel.r_addend = rel->r_addend;
6836 }
6837 else
6838 {
47388f4c
AM		 6839 outrel.r_addend = relocation + rel->r_addend;
6840
252b5132 6841 if (r_type == R_PPC_ADDR32)
47388f4c 6842 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH		 6843 else
6844 {
89200bf8 6845 long indx = 0;
252b5132 6846
1d483afe 6847 if (r_symndx == 0 || bfd_is_abs_section (sec))
89200bf8 6848 ;
252b5132
RH		 6849 else if (sec == NULL || sec->owner == NULL)
6850 {
6851 bfd_set_error (bfd_error_bad_value);
89200bf8 6852 ret = FALSE;
252b5132
RH		 6853 }
6854 else
6855 {
6856 asection *osec;
6857
47388f4c
AM		 6858 /* We are turning this relocation into one
6859 against a section symbol. It would be
6860 proper to subtract the symbol's value,
6861 osec->vma, from the emitted reloc addend,
6862 but ld.so expects buggy relocs. */
252b5132
RH		 6863 osec = sec->output_section;
6864 indx = elf_section_data (osec)->dynindx;
74541ad4
AM		 6865 if (indx == 0)
6866 {
6867 osec = htab->elf.text_index_section;
6868 indx = elf_section_data (osec)->dynindx;
6869 }
6870 BFD_ASSERT (indx != 0);
252b5132 6871#ifdef DEBUG
74541ad4 6872 if (indx == 0)
e460dd0d 6873 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM		 6874 indx, osec->name, osec->flags,
6875 h->root.root.string);
252b5132
RH		 6876#endif
6877 }
6878
6879 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH		 6880 }
6881 }
6882
947216bf
AM		 6883 loc = sreloc->contents;
6884 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6885 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 6886
2243deae 6887 if (skip == -1)
252b5132 6888 continue;
2243deae
L		 6889
6890 /* This reloc will be computed at runtime. We clear the memory
6891 so that it contains predictable value. */
6892 if (! skip
6893 && ((input_section->flags & SEC_ALLOC) != 0
6894 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6895 {
6896 relocation = howto->pc_relative ? outrel.r_offset : 0;
6897 addend = 0;
6898 break;
6899 }
252b5132 6900 }
252b5132
RH		 6901 break;
6902
b4a38de6
AM		 6903 case R_PPC_RELAX32PC_PLT:
6904 case R_PPC_RELAX32_PLT:
a6aa5195
AM		 6905 {
6906 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6907
4a3dc543 6908 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 6909 relocation = (htab->glink->output_section->vma
6910 + htab->glink->output_offset
6911 + ent->glink_offset);
6912 else
6913 relocation = (htab->plt->output_section->vma
6914 + htab->plt->output_offset
6915 + ent->plt.offset);
a6aa5195 6916 }
b4a38de6
AM		 6917 if (r_type == R_PPC_RELAX32_PLT)
6918 goto relax32;
6919 /* Fall thru */
6920
f31a141e
AM		 6921 case R_PPC_RELAX32PC:
6922 relocation -= (input_section->output_section->vma
6923 + input_section->output_offset
6924 + rel->r_offset - 4);
6925 /* Fall thru */
b4a38de6 6926
deaaf2f3 6927 case R_PPC_RELAX32:
b4a38de6 6928 relax32:
9abc968f
AM		 6929 {
6930 unsigned long t0;
6931 unsigned long t1;
6932
6933 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6934 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6935
6936 /* We're clearing the bits for R_PPC_ADDR16_HA
6937 and R_PPC_ADDR16_LO here. */
6938 t0 &= ~0xffff;
6939 t1 &= ~0xffff;
6940
6941 /* t0 is HA, t1 is LO */
6942 relocation += addend;
6943 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6944 t1 |= relocation & 0xffff;
6945
6946 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6947 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6948 }
8517fae7 6949 continue;
deaaf2f3 6950
70bccea4 6951 /* Indirect .sdata relocation. */
7619e7c7 6952 case R_PPC_EMB_SDAI16:
c9a2f333 6953 BFD_ASSERT (htab->sdata[0].section != NULL);
7619e7c7 6954 relocation
76750a2f
AM		 6955 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6956 h, relocation, rel);
252b5132
RH		 6957 break;
6958
70bccea4 6959 /* Indirect .sdata2 relocation. */
7619e7c7 6960 case R_PPC_EMB_SDA2I16:
c9a2f333 6961 BFD_ASSERT (htab->sdata[1].section != NULL);
7619e7c7 6962 relocation
76750a2f
AM		 6963 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6964 h, relocation, rel);
252b5132
RH		 6965 break;
6966
70bccea4
AM		 6967 /* Handle the TOC16 reloc. We want to use the offset within the .got
6968 section, not the actual VMA. This is appropriate when generating
6969 an embedded ELF object, for which the .got section acts like the
6970 AIX .toc section. */
7619e7c7 6971 case R_PPC_TOC16: /* phony GOT16 relocations */
55fd94b0 6972 BFD_ASSERT (sec != NULL);
252b5132
RH		 6973 BFD_ASSERT (bfd_is_und_section (sec)
6974 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
f12123c0 6975 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
252b5132 6976
70bccea4 6977 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH		 6978 break;
6979
7619e7c7 6980 case R_PPC_PLTREL24:
252b5132 6981 /* Relocation is to the entry for this symbol in the
70bccea4 6982 procedure linkage table. */
a6aa5195
AM		 6983 {
6984 struct plt_entry *ent = find_plt_ent (h, got2, addend);
252b5132 6985
a6aa5195
AM		 6986 addend = 0;
6987 if (ent == NULL
6988 || htab->plt == NULL)
6989 {
6990 /* We didn't make a PLT entry for this symbol. This
6991 happens when statically linking PIC code, or when
6992 using -Bsymbolic. */
6993 break;
6994 }
252b5132 6995
a6aa5195 6996 unresolved_reloc = FALSE;
4a3dc543 6997 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 6998 relocation = (htab->glink->output_section->vma
6999 + htab->glink->output_offset
7000 + ent->glink_offset);
7001 else
7002 relocation = (htab->plt->output_section->vma
7003 + htab->plt->output_offset
7004 + ent->plt.offset);
7005 }
8da6118f 7006 break;
252b5132 7007
70bccea4 7008 /* Relocate against _SDA_BASE_. */
7619e7c7 7009 case R_PPC_SDAREL16:
252b5132
RH		 7010 {
7011 const char *name;
046183de 7012 struct elf_link_hash_entry *sh;
252b5132 7013
55fd94b0 7014 BFD_ASSERT (sec != NULL);
252b5132 7015 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7016 if (! ((CONST_STRNEQ (name, ".sdata")
5f819128 7017 && (name[6] == 0 || name[6] == '.'))
0112cd26 7018 || (CONST_STRNEQ (name, ".sbss")
5f819128 7019 && (name[5] == 0 || name[5] == '.'))))
252b5132 7020 {
55fd94b0 7021 (*_bfd_error_handler)
d003868e 7022 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7023 "in the wrong output section (%s)"),
d003868e 7024 input_bfd,
55fd94b0
AM		 7025 sym_name,
7026 howto->name,
7027 name);
252b5132 7028 }
046183de
AM		 7029 sh = htab->sdata[0].sym;
7030 addend -= (sh->root.u.def.value
7031 + sh->root.u.def.section->output_offset
7032 + sh->root.u.def.section->output_section->vma);
252b5132
RH		 7033 }
7034 break;
7035
70bccea4 7036 /* Relocate against _SDA2_BASE_. */
7619e7c7 7037 case R_PPC_EMB_SDA2REL:
252b5132
RH		 7038 {
7039 const char *name;
046183de 7040 struct elf_link_hash_entry *sh;
252b5132 7041
55fd94b0 7042 BFD_ASSERT (sec != NULL);
252b5132 7043 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26
NC		 7044 if (! (CONST_STRNEQ (name, ".sdata2")
7045 || CONST_STRNEQ (name, ".sbss2")))
252b5132 7046 {
55fd94b0 7047 (*_bfd_error_handler)
d003868e 7048 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7049 "in the wrong output section (%s)"),
d003868e 7050 input_bfd,
55fd94b0
AM		 7051 sym_name,
7052 howto->name,
7053 name);
c3668558 7054
252b5132 7055 bfd_set_error (bfd_error_bad_value);
b34976b6 7056 ret = FALSE;
252b5132
RH		 7057 continue;
7058 }
046183de
AM		 7059 sh = htab->sdata[1].sym;
7060 addend -= (sh->root.u.def.value
7061 + sh->root.u.def.section->output_offset
7062 + sh->root.u.def.section->output_section->vma);
252b5132
RH		 7063 }
7064 break;
7065
70bccea4 7066 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7
AM		 7067 case R_PPC_EMB_SDA21:
7068 case R_PPC_EMB_RELSDA:
252b5132
RH		 7069 {
7070 const char *name;
7071 int reg;
046183de 7072 struct elf_link_hash_entry *sh;
252b5132 7073
55fd94b0 7074 BFD_ASSERT (sec != NULL);
252b5132 7075 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7076 if (((CONST_STRNEQ (name, ".sdata")
5f819128 7077 && (name[6] == 0 || name[6] == '.'))
0112cd26 7078 || (CONST_STRNEQ (name, ".sbss")
5f819128 7079 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH		 7080 {
7081 reg = 13;
046183de
AM		 7082 sh = htab->sdata[0].sym;
7083 addend -= (sh->root.u.def.value
7084 + sh->root.u.def.section->output_offset
7085 + sh->root.u.def.section->output_section->vma);
252b5132
RH		 7086 }
7087
0112cd26
NC		 7088 else if (CONST_STRNEQ (name, ".sdata2")
7089 || CONST_STRNEQ (name, ".sbss2"))
252b5132
RH		 7090 {
7091 reg = 2;
046183de
AM		 7092 sh = htab->sdata[1].sym;
7093 addend -= (sh->root.u.def.value
7094 + sh->root.u.def.section->output_offset
7095 + sh->root.u.def.section->output_section->vma);
252b5132
RH		 7096 }
7097
8da6118f
KH		 7098 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7099 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH		 7100 {
7101 reg = 0;
7102 }
7103
7104 else
7105 {
55fd94b0 7106 (*_bfd_error_handler)
d003868e 7107 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7108 "in the wrong output section (%s)"),
d003868e 7109 input_bfd,
55fd94b0
AM		 7110 sym_name,
7111 howto->name,
7112 name);
252b5132
RH		 7113
7114 bfd_set_error (bfd_error_bad_value);
b34976b6 7115 ret = FALSE;
252b5132
RH		 7116 continue;
7117 }
7118
7119 if (r_type == R_PPC_EMB_SDA21)
7120 { /* fill in register field */
7619e7c7 7121 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 7122 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 7123 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH		 7124 }
7125 }
7126 break;
7127
70bccea4 7128 /* Relocate against the beginning of the section. */
7619e7c7
AM		 7129 case R_PPC_SECTOFF:
7130 case R_PPC_SECTOFF_LO:
7131 case R_PPC_SECTOFF_HI:
7132 case R_PPC_SECTOFF_HA:
55fd94b0 7133 BFD_ASSERT (sec != NULL);
252b5132 7134 addend -= sec->output_section->vma;
252b5132
RH		 7135 break;
7136
70bccea4 7137 /* Negative relocations. */
7619e7c7
AM		 7138 case R_PPC_EMB_NADDR32:
7139 case R_PPC_EMB_NADDR16:
7140 case R_PPC_EMB_NADDR16_LO:
7141 case R_PPC_EMB_NADDR16_HI:
7142 case R_PPC_EMB_NADDR16_HA:
8da6118f 7143 addend -= 2 * relocation;
252b5132
RH		 7144 break;
7145
7619e7c7
AM		 7146 case R_PPC_COPY:
7147 case R_PPC_GLOB_DAT:
7148 case R_PPC_JMP_SLOT:
7149 case R_PPC_RELATIVE:
7150 case R_PPC_PLT32:
7151 case R_PPC_PLTREL32:
7152 case R_PPC_PLT16_LO:
7153 case R_PPC_PLT16_HI:
7154 case R_PPC_PLT16_HA:
7155 case R_PPC_ADDR30:
7156 case R_PPC_EMB_RELSEC16:
7157 case R_PPC_EMB_RELST_LO:
7158 case R_PPC_EMB_RELST_HI:
7159 case R_PPC_EMB_RELST_HA:
7160 case R_PPC_EMB_BIT_FLD:
7161 (*_bfd_error_handler)
d003868e
AM		 7162 (_("%B: relocation %s is not yet supported for symbol %s."),
7163 input_bfd,
7619e7c7
AM		 7164 howto->name,
7165 sym_name);
252b5132
RH		 7166
7167 bfd_set_error (bfd_error_invalid_operation);
b34976b6 7168 ret = FALSE;
252b5132 7169 continue;
7619e7c7 7170 }
252b5132 7171
7619e7c7
AM		 7172 /* Do any further special processing. */
7173 switch (r_type)
7174 {
7175 default:
7176 break;
7177
7178 case R_PPC_ADDR16_HA:
d7128ce4 7179 case R_PPC_REL16_HA:
7619e7c7
AM		 7180 case R_PPC_SECTOFF_HA:
7181 case R_PPC_TPREL16_HA:
7182 case R_PPC_DTPREL16_HA:
7619e7c7
AM		 7183 case R_PPC_EMB_NADDR16_HA:
7184 case R_PPC_EMB_RELST_HA:
7185 /* It's just possible that this symbol is a weak symbol
7b609f53 7186 that's not actually defined anywhere. In that case,
7619e7c7
AM		 7187 'sec' would be NULL, and we should leave the symbol
7188 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 7189 if (sec == NULL)
7190 break;
7191 /* Fall thru */
7192
7193 case R_PPC_PLT16_HA:
7194 case R_PPC_GOT16_HA:
7195 case R_PPC_GOT_TLSGD16_HA:
7196 case R_PPC_GOT_TLSLD16_HA:
7197 case R_PPC_GOT_TPREL16_HA:
7198 case R_PPC_GOT_DTPREL16_HA:
7199 /* Add 0x10000 if sign bit in 0:15 is set.
7200 Bits 0:15 are not used. */
7201 addend += 0x8000;
7619e7c7 7202 break;
252b5132
RH		 7203 }
7204
252b5132 7205#ifdef DEBUG
55fd94b0
AM		 7206 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7207 "offset = %ld, addend = %ld\n",
252b5132 7208 howto->name,
8da6118f 7209 (int) r_type,
252b5132
RH		 7210 sym_name,
7211 r_symndx,
7619e7c7 7212 (long) rel->r_offset,
8da6118f 7213 (long) addend);
252b5132
RH		 7214#endif
7215
7619e7c7
AM		 7216 if (unresolved_reloc
7217 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 7218 && h->def_dynamic))
7619e7c7
AM		 7219 {
7220 (*_bfd_error_handler)
d003868e
AM		 7221 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7222 input_bfd,
7223 input_section,
7619e7c7 7224 (long) rel->r_offset,
7b609f53 7225 howto->name,
7619e7c7
AM		 7226 sym_name);
7227 ret = FALSE;
7228 }
7229
252b5132
RH		 7230 r = _bfd_final_link_relocate (howto,
7231 input_bfd,
7232 input_section,
7233 contents,
7619e7c7 7234 rel->r_offset,
252b5132
RH		 7235 relocation,
7236 addend);
7237
7619e7c7 7238 if (r != bfd_reloc_ok)
252b5132 7239 {
7619e7c7 7240 if (r == bfd_reloc_overflow)
252b5132 7241 {
7619e7c7
AM		 7242 if (warned)
7243 continue;
7244 if (h != NULL
7245 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH		 7246 && howto->pc_relative)
7247 {
7248 /* Assume this is a call protected by other code that
7249 detect the symbol is undefined. If this is the case,
7250 we can safely ignore the overflow. If not, the
7251 program is hosed anyway, and a little warning isn't
7252 going to help. */
252b5132 7253
dc1bc0c9
RH		 7254 continue;
7255 }
252b5132 7256
7619e7c7 7257 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 7258 (h ? &h->root : NULL),
7619e7c7
AM		 7259 sym_name,
7260 howto->name,
7261 rel->r_addend,
7262 input_bfd,
7263 input_section,
7264 rel->r_offset))
7265 return FALSE;
dc1bc0c9
RH		 7266 }
7267 else
7268 {
7619e7c7 7269 (*_bfd_error_handler)
d003868e
AM		 7270 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7271 input_bfd, input_section,
7b609f53 7272 (long) rel->r_offset, howto->name, sym_name, (int) r);
7619e7c7 7273 ret = FALSE;
252b5132
RH		 7274 }
7275 }
7276 }
7277
252b5132
RH		 7278#ifdef DEBUG
7279 fprintf (stderr, "\n");
7280#endif
7281
7282 return ret;
7283}
252b5132 7284\f
a6aa5195
AM		 7285#define PPC_LO(v) ((v) & 0xffff)
7286#define PPC_HI(v) (((v) >> 16) & 0xffff)
7287#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7288
25dbc73a
AM		 7289/* Finish up dynamic symbol handling. We set the contents of various
7290 dynamic sections here. */
c5fccbec 7291
b34976b6 7292static bfd_boolean
25dbc73a
AM		 7293ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7294 struct bfd_link_info *info,
7295 struct elf_link_hash_entry *h,
7296 Elf_Internal_Sym *sym)
e1a9cb8e 7297{
25dbc73a 7298 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM		 7299 struct plt_entry *ent;
7300 bfd_boolean doneone;
e1a9cb8e 7301
25dbc73a
AM		 7302#ifdef DEBUG
7303 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7304 h->root.root.string);
7305#endif
e1a9cb8e 7306
25dbc73a
AM		 7307 htab = ppc_elf_hash_table (info);
7308 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 7309
a6aa5195
AM		 7310 doneone = FALSE;
7311 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7312 if (ent->plt.offset != (bfd_vma) -1)
7313 {
7314 if (!doneone)
7315 {
7316 Elf_Internal_Rela rela;
7317 bfd_byte *loc;
7318 bfd_vma reloc_index;
e1a9cb8e 7319
4a3dc543 7320 if (htab->plt_type == PLT_NEW)
9d8504b1
PB		 7321 reloc_index = ent->plt.offset / 4;
7322 else
7323 {
7324 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7325 / htab->plt_slot_size);
7326 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 7327 && htab->plt_type == PLT_OLD)
9d8504b1
PB		 7328 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
7329 }
7330
a6aa5195
AM		 7331 /* This symbol has an entry in the procedure linkage table.
7332 Set it up. */
4a3dc543 7333 if (htab->plt_type == PLT_VXWORKS)
a6aa5195 7334 {
9d8504b1
PB		 7335 bfd_vma got_offset;
7336 const bfd_vma *plt_entry;
7337
7338 /* The first three entries in .got.plt are reserved. */
7339 got_offset = (reloc_index + 3) * 4;
7340
7341 /* Use the right PLT. */
7342 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
7343 : ppc_elf_vxworks_plt_entry;
7344
7345 /* Fill in the .plt on VxWorks. */
7346 if (info->shared)
7347 {
7348 bfd_vma got_offset_hi = (got_offset >> 16)
7349 + ((got_offset & 0x8000) >> 15);
7350
7351 bfd_put_32 (output_bfd,
7352 plt_entry[0] | (got_offset_hi & 0xffff),
7353 htab->plt->contents + ent->plt.offset + 0);
7354 bfd_put_32 (output_bfd,
7355 plt_entry[1] | (got_offset & 0xffff),
7356 htab->plt->contents + ent->plt.offset + 4);
7357 }
7358 else
7359 {
636ce3f5
AM		 7360 bfd_vma got_loc
7361 = (got_offset
7362 + htab->elf.hgot->root.u.def.value
7363 + htab->elf.hgot->root.u.def.section->output_offset
7364 + htab->elf.hgot->root.u.def.section->output_section->vma);
9d8504b1
PB		 7365 bfd_vma got_loc_hi = (got_loc >> 16)
7366 + ((got_loc & 0x8000) >> 15);
7367
7368 bfd_put_32 (output_bfd,
7369 plt_entry[0] | (got_loc_hi & 0xffff),
7370 htab->plt->contents + ent->plt.offset + 0);
7371 bfd_put_32 (output_bfd,
7372 plt_entry[1] | (got_loc & 0xffff),
7373 htab->plt->contents + ent->plt.offset + 4);
7374 }
7375
7376 bfd_put_32 (output_bfd, plt_entry[2],
7377 htab->plt->contents + ent->plt.offset + 8);
7378 bfd_put_32 (output_bfd, plt_entry[3],
7379 htab->plt->contents + ent->plt.offset + 12);
7380
7381 /* This instruction is an immediate load. The value loaded is
7382 the byte offset of the R_PPC_JMP_SLOT relocation from the
7383 start of the .rela.plt section. The value is stored in the
7384 low-order 16 bits of the load instruction. */
7385 /* NOTE: It appears that this is now an index rather than a
7386 prescaled offset. */
7387 bfd_put_32 (output_bfd,
7388 plt_entry[4] | reloc_index,
7389 htab->plt->contents + ent->plt.offset + 16);
7390 /* This instruction is a PC-relative branch whose target is
7391 the start of the PLT section. The address of this branch
7392 instruction is 20 bytes beyond the start of this PLT entry.
7393 The address is encoded in bits 6-29, inclusive. The value
7394 stored is right-shifted by two bits, permitting a 26-bit
7395 offset. */
7396 bfd_put_32 (output_bfd,
7397 (plt_entry[5]
7398 | (-(ent->plt.offset + 20) & 0x03fffffc)),
7399 htab->plt->contents + ent->plt.offset + 20);
7400 bfd_put_32 (output_bfd, plt_entry[6],
7401 htab->plt->contents + ent->plt.offset + 24);
7402 bfd_put_32 (output_bfd, plt_entry[7],
7403 htab->plt->contents + ent->plt.offset + 28);
7404
7405 /* Fill in the GOT entry corresponding to this PLT slot with
7406 the address immediately after the the "bctr" instruction
7407 in this PLT entry. */
7408 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
7409 + htab->plt->output_offset
7410 + ent->plt.offset + 16),
7411 htab->sgotplt->contents + got_offset);
7412
7413 if (!info->shared)
7414 {
7415 /* Fill in a couple of entries in .rela.plt.unloaded. */
7416 loc = htab->srelplt2->contents
7417 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
7418 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
7419 * sizeof (Elf32_External_Rela));
7420
7421 /* Provide the @ha relocation for the first instruction. */
7422 rela.r_offset = (htab->plt->output_section->vma
7423 + htab->plt->output_offset
7424 + ent->plt.offset + 2);
636ce3f5 7425 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB		 7426 R_PPC_ADDR16_HA);
7427 rela.r_addend = got_offset;
7428 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7429 loc += sizeof (Elf32_External_Rela);
7430
7431 /* Provide the @l relocation for the second instruction. */
7432 rela.r_offset = (htab->plt->output_section->vma
7433 + htab->plt->output_offset
7434 + ent->plt.offset + 6);
636ce3f5 7435 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB		 7436 R_PPC_ADDR16_LO);
7437 rela.r_addend = got_offset;
7438 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7439 loc += sizeof (Elf32_External_Rela);
7440
7441 /* Provide a relocation for the GOT entry corresponding to this
7442 PLT slot. Point it at the middle of the .plt entry. */
7443 rela.r_offset = (htab->sgotplt->output_section->vma
7444 + htab->sgotplt->output_offset
7445 + got_offset);
7325306f 7446 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB		 7447 R_PPC_ADDR32);
7448 rela.r_addend = ent->plt.offset + 16;
7449 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7450 }
7451
7452 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7453 In particular, the offset for the relocation is not the
7454 address of the PLT entry for this function, as specified
7455 by the ABI. Instead, the offset is set to the address of
7456 the GOT slot for this function. See EABI 4.4.4.1. */
7457 rela.r_offset = (htab->sgotplt->output_section->vma
7458 + htab->sgotplt->output_offset
7459 + got_offset);
7460
a6aa5195
AM		 7461 }
7462 else
7463 {
9d8504b1
PB		 7464 rela.r_offset = (htab->plt->output_section->vma
7465 + htab->plt->output_offset
7466 + ent->plt.offset);
4a3dc543 7467 if (htab->plt_type == PLT_OLD)
9d8504b1
PB		 7468 {
7469 /* We don't need to fill in the .plt. The ppc dynamic
7470 linker will fill it in. */
7471 }
7472 else
7473 {
7474 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
7475 + htab->glink->output_section->vma
7476 + htab->glink->output_offset);
7477 bfd_put_32 (output_bfd, val,
7478 htab->plt->contents + ent->plt.offset);
7479 }
a6aa5195 7480 }
e1a9cb8e 7481
a6aa5195 7482 /* Fill in the entry in the .rela.plt section. */
a6aa5195
AM		 7483 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
7484 rela.r_addend = 0;
e1a9cb8e 7485
a6aa5195
AM		 7486 loc = (htab->relplt->contents
7487 + reloc_index * sizeof (Elf32_External_Rela));
7488 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 7489
a6aa5195
AM		 7490 if (!h->def_regular)
7491 {
0eb4a168
AM		 7492 /* Mark the symbol as undefined, rather than as
7493 defined in the .plt section. Leave the value if
7494 there were any relocations where pointer equality
7495 matters (this is a clue for the dynamic linker, to
7496 make function pointer comparisons work between an
7497 application and shared library), otherwise set it
7498 to zero. */
a6aa5195 7499 sym->st_shndx = SHN_UNDEF;
0eb4a168 7500 if (!h->pointer_equality_needed)
a6aa5195 7501 sym->st_value = 0;
0eb4a168
AM		 7502 else if (!h->ref_regular_nonweak)
7503 {
625af618
AM		 7504 /* This breaks function pointer comparisons, but
7505 that is better than breaking tests for a NULL
0eb4a168 7506 function pointer. */
0eb4a168
AM		 7507 sym->st_value = 0;
7508 }
a6aa5195
AM		 7509 }
7510 doneone = TRUE;
7511 }
e1a9cb8e 7512
4a3dc543 7513 if (htab->plt_type == PLT_NEW)
a6aa5195
AM		 7514 {
7515 bfd_vma plt;
7516 unsigned char *p;
e1a9cb8e 7517
a6aa5195
AM		 7518 plt = (ent->plt.offset
7519 + htab->plt->output_section->vma
7520 + htab->plt->output_offset);
7521 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
e1a9cb8e 7522
a6aa5195
AM		 7523 if (info->shared || info->pie)
7524 {
7525 bfd_vma got = 0;
7526
7527 if (ent->addend >= 32768)
7528 got = (ent->addend
7529 + ent->sec->output_section->vma
7530 + ent->sec->output_offset);
7531 else if (htab->elf.hgot != NULL)
7532 got = (htab->elf.hgot->root.u.def.value
7533 + htab->elf.hgot->root.u.def.section->output_section->vma
7534 + htab->elf.hgot->root.u.def.section->output_offset);
7535
7536 plt -= got;
7537
7538 if (plt + 0x8000 < 0x10000)
7539 {
7540 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7541 p += 4;
7542 bfd_put_32 (output_bfd, MTCTR_11, p);
7543 p += 4;
7544 bfd_put_32 (output_bfd, BCTR, p);
7545 p += 4;
7546 bfd_put_32 (output_bfd, NOP, p);
7547 p += 4;
7548 }
7549 else
7550 {
7551 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7552 p += 4;
7553 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7554 p += 4;
7555 bfd_put_32 (output_bfd, MTCTR_11, p);
7556 p += 4;
7557 bfd_put_32 (output_bfd, BCTR, p);
7558 p += 4;
7559 }
7560 }
7561 else
7562 {
7563 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7564 p += 4;
7565 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7566 p += 4;
7567 bfd_put_32 (output_bfd, MTCTR_11, p);
7568 p += 4;
7569 bfd_put_32 (output_bfd, BCTR, p);
7570 p += 4;
28e99bb6
AM		 7571
7572 /* We only need one non-PIC glink stub. */
7573 break;
a6aa5195
AM		 7574 }
7575 }
7576 else
7577 break;
7578 }
e1a9cb8e 7579
25dbc73a
AM		 7580 if (h->needs_copy)
7581 {
7582 asection *s;
7583 Elf_Internal_Rela rela;
7584 bfd_byte *loc;
e1a9cb8e 7585
25dbc73a 7586 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 7587
25dbc73a
AM		 7588#ifdef DEBUG
7589 fprintf (stderr, ", copy");
7590#endif
e1a9cb8e 7591
25dbc73a 7592 BFD_ASSERT (h->dynindx != -1);
86bbe32f 7593
4dc4a9a5 7594 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM		 7595 s = htab->relsbss;
7596 else
7597 s = htab->relbss;
7598 BFD_ASSERT (s != NULL);
e1a9cb8e 7599
25dbc73a
AM		 7600 rela.r_offset = (h->root.u.def.value
7601 + h->root.u.def.section->output_section->vma
7602 + h->root.u.def.section->output_offset);
7603 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7604 rela.r_addend = 0;
7605 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7606 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7607 }
e1a9cb8e 7608
25dbc73a
AM		 7609#ifdef DEBUG
7610 fprintf (stderr, "\n");
7611#endif
e1a9cb8e 7612
25dbc73a 7613 /* Mark some specially defined symbols as absolute. */
9d8504b1
PB		 7614 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7615 || (!htab->is_vxworks
7616 && (h == htab->elf.hgot
7617 || strcmp (h->root.root.string,
7618 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
25dbc73a 7619 sym->st_shndx = SHN_ABS;
e1a9cb8e 7620
25dbc73a
AM		 7621 return TRUE;
7622}
7623\f
7624static enum elf_reloc_type_class
7625ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 7626{
25dbc73a
AM		 7627 switch (ELF32_R_TYPE (rela->r_info))
7628 {
7629 case R_PPC_RELATIVE:
7630 return reloc_class_relative;
7631 case R_PPC_REL24:
7632 case R_PPC_ADDR24:
7633 case R_PPC_JMP_SLOT:
7634 return reloc_class_plt;
7635 case R_PPC_COPY:
7636 return reloc_class_copy;
7637 default:
7638 return reloc_class_normal;
7639 }
e1a9cb8e 7640}
25dbc73a
AM		 7641\f
7642/* Finish up the dynamic sections. */
e1a9cb8e 7643
25dbc73a
AM		 7644static bfd_boolean
7645ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7646 struct bfd_link_info *info)
e1a9cb8e 7647{
25dbc73a 7648 asection *sdyn;
9d8504b1 7649 asection *splt;
25dbc73a 7650 struct ppc_elf_link_hash_table *htab;
1fe44d79 7651 bfd_vma got;
9d8504b1 7652 bfd * dynobj;
e1a9cb8e 7653
25dbc73a
AM		 7654#ifdef DEBUG
7655 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7656#endif
6b0817e5 7657
25dbc73a 7658 htab = ppc_elf_hash_table (info);
9d8504b1
PB		 7659 dynobj = elf_hash_table (info)->dynobj;
7660 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7661 if (htab->is_vxworks)
7662 splt = bfd_get_section_by_name (dynobj, ".plt");
7663 else
7664 splt = NULL;
e1a9cb8e 7665
1fe44d79
AM		 7666 got = 0;
7667 if (htab->elf.hgot != NULL)
7668 got = (htab->elf.hgot->root.u.def.value
7669 + htab->elf.hgot->root.u.def.section->output_section->vma
7670 + htab->elf.hgot->root.u.def.section->output_offset);
7671
25dbc73a 7672 if (htab->elf.dynamic_sections_created)
e1a9cb8e 7673 {
25dbc73a 7674 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 7675
25dbc73a 7676 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 7677
25dbc73a
AM		 7678 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7679 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7680 for (; dyncon < dynconend; dyncon++)
7681 {
7682 Elf_Internal_Dyn dyn;
7683 asection *s;
e1a9cb8e 7684
9d8504b1 7685 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 7686
25dbc73a
AM		 7687 switch (dyn.d_tag)
7688 {
7689 case DT_PLTGOT:
9d8504b1
PB		 7690 if (htab->is_vxworks)
7691 s = htab->sgotplt;
7692 else
7693 s = htab->plt;
25dbc73a
AM		 7694 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7695 break;
86bbe32f 7696
25dbc73a
AM		 7697 case DT_PLTRELSZ:
7698 dyn.d_un.d_val = htab->relplt->size;
7699 break;
e1a9cb8e 7700
25dbc73a
AM		 7701 case DT_JMPREL:
7702 s = htab->relplt;
7703 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7704 break;
2f89ff8d 7705
1fe44d79
AM		 7706 case DT_PPC_GOT:
7707 dyn.d_un.d_ptr = got;
d7128ce4
AM		 7708 break;
7709
9d8504b1
PB		 7710 case DT_RELASZ:
7711 if (htab->is_vxworks)
7712 {
7713 if (htab->relplt)
7714 dyn.d_un.d_ptr -= htab->relplt->size;
7715 break;
7716 }
7717 continue;
7718
25dbc73a 7719 default:
7a2b07ff
NS		 7720 if (htab->is_vxworks
7721 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7722 break;
25dbc73a
AM		 7723 continue;
7724 }
4c45e5c9 7725
25dbc73a
AM		 7726 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7727 }
7728 }
4c45e5c9 7729
25dbc73a
AM		 7730 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7731 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
3b36f7e6 7732 if (htab->got != NULL)
25dbc73a 7733 {
3b36f7e6
AM		 7734 unsigned char *p = htab->got->contents;
7735 bfd_vma val;
2f89ff8d 7736
636ce3f5 7737 p += htab->elf.hgot->root.u.def.value;
4a3dc543 7738 if (htab->plt_type == PLT_OLD)
d7128ce4 7739 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
3b36f7e6
AM		 7740
7741 val = 0;
7742 if (sdyn != NULL)
7743 val = sdyn->output_section->vma + sdyn->output_offset;
7744 bfd_put_32 (output_bfd, val, p);
25dbc73a
AM		 7745
7746 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7747 }
7748
9d8504b1
PB		 7749 /* Fill in the first entry in the VxWorks procedure linkage table. */
7750 if (splt && splt->size > 0)
7751 {
7752 /* Use the right PLT. */
7753 static const bfd_vma *plt_entry = NULL;
7754 plt_entry = info->shared ?
7755 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7756
7757 if (!info->shared)
7758 {
7759 bfd_vma got_value =
636ce3f5
AM		 7760 (htab->elf.hgot->root.u.def.section->output_section->vma
7761 + htab->elf.hgot->root.u.def.section->output_offset
7762 + htab->elf.hgot->root.u.def.value);
9d8504b1
PB		 7763 bfd_vma got_hi = (got_value >> 16) + ((got_value & 0x8000) >> 15);
7764
7765 bfd_put_32 (output_bfd, plt_entry[0] | (got_hi & 0xffff),
7766 splt->contents + 0);
7767 bfd_put_32 (output_bfd, plt_entry[1] | (got_value & 0xffff),
7768 splt->contents + 4);
7769 }
7770 else
7771 {
7772 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7773 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7774 }
7775 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7776 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7777 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7778 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7779 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7780 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7781
7782 if (! info->shared)
7783 {
7784 Elf_Internal_Rela rela;
7785 bfd_byte *loc;
7786
7787 loc = htab->srelplt2->contents;
7788
7789 /* Output the @ha relocation for the first instruction. */
7790 rela.r_offset = (htab->plt->output_section->vma
7791 + htab->plt->output_offset
7792 + 2);
636ce3f5 7793 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB		 7794 rela.r_addend = 0;
7795 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7796 loc += sizeof (Elf32_External_Rela);
7797
7798 /* Output the @l relocation for the second instruction. */
7799 rela.r_offset = (htab->plt->output_section->vma
7800 + htab->plt->output_offset
7801 + 6);
636ce3f5 7802 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB		 7803 rela.r_addend = 0;
7804 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7805 loc += sizeof (Elf32_External_Rela);
7806
7807 /* Fix up the remaining relocations. They may have the wrong
7808 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7809 in which symbols were output. */
7810 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7811 {
7812 Elf_Internal_Rela rel;
7813
7814 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 7815 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB		 7816 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7817 loc += sizeof (Elf32_External_Rela);
7818
7819 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 7820 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB		 7821 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7822 loc += sizeof (Elf32_External_Rela);
7823
7824 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 7825 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB		 7826 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7827 loc += sizeof (Elf32_External_Rela);
7828 }
7829 }
7830 }
7831
d7128ce4
AM		 7832 if (htab->glink != NULL && htab->glink->contents != NULL)
7833 {
7834 unsigned char *p;
7835 unsigned char *endp;
a6aa5195 7836 bfd_vma res0;
d7128ce4 7837 unsigned int i;
a6aa5195
AM		 7838
7839 /*
7840 * PIC glink code is the following:
7841 *
7842 * # ith PLT code stub.
7843 * addis 11,30,(plt+(i-1)*4-got)@ha
7844 * lwz 11,(plt+(i-1)*4-got)@l(11)
7845 * mtctr 11
7846 * bctr
7847 *
7848 * # A table of branches, one for each plt entry.
176a0d42 7849 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM		 7850 * # addresses, so (r11 - res_0) gives the plt index * 4.
7851 * res_0: b PLTresolve
7852 * res_1: b PLTresolve
7853 * .
7854 * # Some number of entries towards the end can be nops
7855 * res_n_m3: nop
7856 * res_n_m2: nop
7857 * res_n_m1:
7858 *
7859 * PLTresolve:
7860 * addis 11,11,(1f-res_0)@ha
7861 * mflr 0
7862 * bcl 20,31,1f
7863 * 1: addi 11,11,(1b-res_0)@l
7864 * mflr 12
7865 * mtlr 0
7866 * sub 11,11,12 # r11 = index * 4
7867 * addis 12,12,(got+4-1b)@ha
7868 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7869 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7870 * mtctr 0
7871 * add 0,11,11
7872 * add 11,0,11 # r11 = index * 12 = reloc offset.
7873 * bctr
7874 */
7875 static const unsigned int pic_plt_resolve[] =
7876 {
7877 ADDIS_11_11,
7878 MFLR_0,
7879 BCL_20_31,
7880 ADDI_11_11,
7881 MFLR_12,
7882 MTLR_0,
7883 SUB_11_11_12,
7884 ADDIS_12_12,
7885 LWZ_0_12,
7886 LWZ_12_12,
7887 MTCTR_0,
7888 ADD_0_11_11,
7889 ADD_11_0_11,
7890 BCTR,
7891 NOP,
7892 NOP
7893 };
7894
176a0d42
AM		 7895 /*
7896 * Non-PIC glink code is a little simpler.
7897 *
7898 * # ith PLT code stub.
7899 * lis 11,(plt+(i-1)*4)@ha
7900 * lwz 11,(plt+(i-1)*4)@l(11)
7901 * mtctr 11
7902 * bctr
7903 *
7904 * The branch table is the same, then comes
7905 *
7906 * PLTresolve:
7907 * lis 12,(got+4)@ha
7908 * addis 11,11,(-res_0)@ha
7909 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
7910 * addi 11,11,(-res_0)@l # r11 = index * 4
7911 * mtctr 0
7912 * add 0,11,11
7913 * lwz 12,(got+8)@l(12) # got[2] contains the map address
7914 * add 11,0,11 # r11 = index * 12 = reloc offset.
7915 * bctr
7916 */
d7128ce4
AM		 7917 static const unsigned int plt_resolve[] =
7918 {
a6aa5195
AM		 7919 LIS_12,
7920 ADDIS_11_11,
7921 LWZ_0_12,
7922 ADDI_11_11,
d7128ce4 7923 MTCTR_0,
7e8aeb9a 7924 ADD_0_11_11,
a6aa5195 7925 LWZ_12_12,
7e8aeb9a 7926 ADD_11_0_11,
d7128ce4
AM		 7927 BCTR,
7928 NOP,
7929 NOP,
a6aa5195
AM		 7930 NOP,
7931 NOP,
7932 NOP,
7933 NOP,
d7128ce4
AM		 7934 NOP
7935 };
7936
a6aa5195
AM		 7937 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7938 abort ();
7939 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM		 7940 abort ();
7941
a6aa5195 7942 /* Build the branch table, one for each plt entry (less one),
86b9da88 7943 and perhaps some padding. */
a6aa5195
AM		 7944 p = htab->glink->contents;
7945 p += htab->glink_pltresolve;
86b9da88
AM		 7946 endp = htab->glink->contents;
7947 endp += htab->glink->size - GLINK_PLTRESOLVE;
7948 while (p < endp - 8 * 4)
7949 {
7950 bfd_put_32 (output_bfd, B + endp - p, p);
7951 p += 4;
7952 }
7953 while (p < endp)
7954 {
7955 bfd_put_32 (output_bfd, NOP, p);
7956 p += 4;
7957 }
7958
7e8aeb9a 7959 res0 = (htab->glink_pltresolve
86b9da88
AM		 7960 + htab->glink->output_section->vma
7961 + htab->glink->output_offset);
7962
7963 /* Last comes the PLTresolve stub. */
7e8aeb9a
AM		 7964 if (info->shared || info->pie)
7965 {
a6aa5195 7966 bfd_vma bcl;
d7128ce4 7967
a6aa5195 7968 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 7969 {
a6aa5195 7970 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7e8aeb9a
AM		 7971 p += 4;
7972 }
a6aa5195
AM		 7973 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
7974
7975 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
7976 + htab->glink->output_section->vma
7977 + htab->glink->output_offset);
7978
7979 bfd_put_32 (output_bfd,
7980 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
7981 bfd_put_32 (output_bfd,
7982 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
7983 bfd_put_32 (output_bfd,
7984 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
7985 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
7986 {
7987 bfd_put_32 (output_bfd,
7988 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7989 bfd_put_32 (output_bfd,
7990 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
7991 }
7992 else
7993 {
7994 bfd_put_32 (output_bfd,
7995 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
7996 bfd_put_32 (output_bfd,
7997 LWZ_12_12 + 4, p + 9*4);
7998 }
7e8aeb9a
AM		 7999 }
8000 else
d7128ce4 8001 {
a6aa5195 8002 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a
AM		 8003 {
8004 bfd_put_32 (output_bfd, plt_resolve[i], p);
8005 p += 4;
8006 }
a6aa5195
AM		 8007 p -= 4 * ARRAY_SIZE (plt_resolve);
8008
8009 bfd_put_32 (output_bfd,
8010 LIS_12 + PPC_HA (got + 4), p + 0*4);
8011 bfd_put_32 (output_bfd,
8012 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8013 bfd_put_32 (output_bfd,
8014 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8015 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8016 {
8017 bfd_put_32 (output_bfd,
8018 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8019 bfd_put_32 (output_bfd,
8020 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8021 }
8022 else
8023 {
8024 bfd_put_32 (output_bfd,
8025 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8026 bfd_put_32 (output_bfd,
8027 LWZ_12_12 + 4, p + 6*4);
8028 }
d7128ce4 8029 }
d7128ce4
AM		 8030 }
8031
25dbc73a
AM		 8032 return TRUE;
8033}
e1a9cb8e 8034\f
252b5132
RH		 8035#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8036#define TARGET_LITTLE_NAME "elf32-powerpcle"
8037#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8038#define TARGET_BIG_NAME "elf32-powerpc"
8039#define ELF_ARCH bfd_arch_powerpc
8040#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC		 8041#ifdef __QNXTARGET__
8042#define ELF_MAXPAGESIZE 0x1000
8043#else
252b5132 8044#define ELF_MAXPAGESIZE 0x10000
d0facd1b 8045#endif
b1342370 8046#define ELF_MINPAGESIZE 0x1000
24718e3b 8047#define ELF_COMMONPAGESIZE 0x1000
252b5132
RH		 8048#define elf_info_to_howto ppc_elf_info_to_howto
8049
8050#ifdef EM_CYGNUS_POWERPC
8051#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8052#endif
8053
8054#ifdef EM_PPC_OLD
8055#define ELF_MACHINE_ALT2 EM_PPC_OLD
8056#endif
8057
8058#define elf_backend_plt_not_loaded 1
252b5132 8059#define elf_backend_can_gc_sections 1
51b64d56 8060#define elf_backend_can_refcount 1
b491616a 8061#define elf_backend_rela_normal 1
252b5132 8062
43c40ab2 8063#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 8064#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 8065#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 8066#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
157090f7 8067#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 8068#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 8069#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 8070#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 8071
feee612b 8072#define elf_backend_object_p ppc_elf_object_p
252b5132
RH		 8073#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8074#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8075#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8076#define elf_backend_relocate_section ppc_elf_relocate_section
8077#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8078#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 8079#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH		 8080#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8081#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8082#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 8083#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH		 8084#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8085#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8086#define elf_backend_fake_sections ppc_elf_fake_sections
8087#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
c5fccbec
DJ		 8088#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8089#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 8090#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 8091#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM		 8092#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8093#define elf_backend_final_write_processing ppc_elf_final_write_processing
8094#define elf_backend_write_section ppc_elf_write_section
551b43fd 8095#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 8096#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 8097#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 8098#define elf_backend_init_index_section _bfd_elf_init_1_index_section
252b5132
RH		 8099
8100#include "elf32-target.h"
9d8504b1
PB		 8101
8102/* VxWorks Target */
8103
8104#undef TARGET_LITTLE_SYM
8105#undef TARGET_LITTLE_NAME
8106
8107#undef TARGET_BIG_SYM
8108#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8109#undef TARGET_BIG_NAME
8110#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8111
d5e3d971
PB		 8112/* VxWorks uses the elf default section flags for .plt. */
8113static const struct bfd_elf_special_section *
8114ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 8115{
d5e3d971
PB		 8116 if (sec->name == NULL)
8117 return NULL;
8118
8119 if (strcmp (sec->name, ".plt") == 0)
8120 return _bfd_elf_get_sec_type_attr (abfd, sec);
8121
8122 return ppc_elf_get_sec_type_attr (abfd, sec);
8123}
9d8504b1
PB		 8124
8125/* Like ppc_elf_link_hash_table_create, but overrides
8126 appropriately for VxWorks. */
8127static struct bfd_link_hash_table *
8128ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8129{
8130 struct bfd_link_hash_table *ret;
8131
8132 ret = ppc_elf_link_hash_table_create (abfd);
8133 if (ret)
8134 {
8135 struct ppc_elf_link_hash_table *htab
8136 = (struct ppc_elf_link_hash_table *)ret;
8137 htab->is_vxworks = 1;
4a3dc543 8138 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB		 8139 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8140 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8141 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8142 }
8143 return ret;
8144}
8145
8146/* Tweak magic VxWorks symbols as they are loaded. */
8147static bfd_boolean
8148ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8149 struct bfd_link_info *info,
8150 Elf_Internal_Sym *sym,
8151 const char **namep ATTRIBUTE_UNUSED,
8152 flagword *flagsp ATTRIBUTE_UNUSED,
8153 asection **secp,
8154 bfd_vma *valp)
8155{
8156 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8157 valp))
8158 return FALSE;
8159
8160 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8161}
8162
9d8504b1
PB		 8163static void
8164ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8165{
8166 ppc_elf_final_write_processing(abfd, linker);
8167 elf_vxworks_final_write_processing(abfd, linker);
8168}
8169
8170/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8171 define it. */
8172#undef elf_backend_want_plt_sym
8173#define elf_backend_want_plt_sym 1
8174#undef elf_backend_want_got_plt
8175#define elf_backend_want_got_plt 1
8176#undef elf_backend_got_symbol_offset
8177#define elf_backend_got_symbol_offset 0
8178#undef elf_backend_plt_not_loaded
8179#define elf_backend_plt_not_loaded 0
8180#undef elf_backend_plt_readonly
8181#define elf_backend_plt_readonly 1
8182#undef elf_backend_got_header_size
8183#define elf_backend_got_header_size 12
8184
468392fb
AM		 8185#undef bfd_elf32_get_synthetic_symtab
8186
9d8504b1
PB		 8187#undef bfd_elf32_bfd_link_hash_table_create
8188#define bfd_elf32_bfd_link_hash_table_create \
8189 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB		 8190#undef elf_backend_add_symbol_hook
8191#define elf_backend_add_symbol_hook \
8192 ppc_elf_vxworks_add_symbol_hook
8193#undef elf_backend_link_output_symbol_hook
8194#define elf_backend_link_output_symbol_hook \
9c72ff84 8195 elf_vxworks_link_output_symbol_hook
9d8504b1
PB		 8196#undef elf_backend_final_write_processing
8197#define elf_backend_final_write_processing \
8198 ppc_elf_vxworks_final_write_processing
d5e3d971
PB		 8199#undef elf_backend_get_sec_type_attr
8200#define elf_backend_get_sec_type_attr \
8201 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB		 8202#undef elf_backend_emit_relocs
8203#define elf_backend_emit_relocs \
8204 elf_vxworks_emit_relocs
8205
8206#undef elf32_bed
8207#define elf32_bed ppc_elf_vxworks_bed
8208
8209#include "elf32-target.h"
GDB Binutils - Deliverables
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