* Makefile.tpl (all): Avoid harmless warning in make all when
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
CommitLineData
252b5132 1/* PowerPC-specific support for 32-bit ELF
051d5130 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3a71aa26 3 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
252b5132
RH
4 Written by Ian Lance Taylor, Cygnus Support.
5
ae9a127f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
ae9a127f
NC
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
ae9a127f 11 (at your option) any later version.
252b5132 12
ae9a127f
NC
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
ae9a127f 18 You should have received a copy of the GNU General Public License
fc0bffd6 19 along with this program; if not, write to the
3e110533 20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
53e09e0a 21 Boston, MA 02110-1301, USA. */
252b5132 22
cd123cb7 23
252b5132
RH
24/* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
28
3db64b00 29#include "sysdep.h"
183e98be 30#include <stdarg.h>
252b5132 31#include "bfd.h"
252b5132
RH
32#include "bfdlink.h"
33#include "libbfd.h"
34#include "elf-bfd.h"
35#include "elf/ppc.h"
7619e7c7 36#include "elf32-ppc.h"
9d8504b1 37#include "elf-vxworks.h"
252b5132 38
f0fe0e16 39/* RELA relocations are used here. */
252b5132 40
252b5132 41static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 43static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 45
70bccea4
AM
46/* Branch prediction bit for branch taken relocs. */
47#define BRANCH_PREDICT_BIT 0x200000
48/* Mask to set RA in memory instructions. */
49#define RA_REGISTER_MASK 0x001f0000
50/* Value to shift register by to insert RA. */
51#define RA_REGISTER_SHIFT 16
252b5132
RH
52
53/* The name of the dynamic interpreter. This is put in the .interp
54 section. */
252b5132
RH
55#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
56
d7128ce4 57/* For old-style PLT. */
252b5132
RH
58/* The number of single-slot PLT entries (the rest use two slots). */
59#define PLT_NUM_SINGLE_ENTRIES 8192
60
d7128ce4 61/* For new-style .glink and .plt. */
a6aa5195 62#define GLINK_PLTRESOLVE 16*4
d7128ce4
AM
63#define GLINK_ENTRY_SIZE 4*4
64
9d8504b1
PB
65/* VxWorks uses its own plt layout, filled in by the static linker. */
66
67/* The standard VxWorks PLT entry. */
68#define VXWORKS_PLT_ENTRY_SIZE 32
69static const bfd_vma ppc_elf_vxworks_plt_entry
70 [VXWORKS_PLT_ENTRY_SIZE / 4] =
71 {
72 0x3d800000, /* lis r12,0 */
73 0x818c0000, /* lwz r12,0(r12) */
74 0x7d8903a6, /* mtctr r12 */
75 0x4e800420, /* bctr */
76 0x39600000, /* li r11,0 */
77 0x48000000, /* b 14 <.PLT0resolve+0x4> */
78 0x60000000, /* nop */
79 0x60000000, /* nop */
80 };
81static const bfd_vma ppc_elf_vxworks_pic_plt_entry
82 [VXWORKS_PLT_ENTRY_SIZE / 4] =
83 {
84 0x3d9e0000, /* addis r12,r30,0 */
85 0x818c0000, /* lwz r12,0(r12) */
86 0x7d8903a6, /* mtctr r12 */
87 0x4e800420, /* bctr */
88 0x39600000, /* li r11,0 */
89 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
90 0x60000000, /* nop */
91 0x60000000, /* nop */
92 };
93
94/* The initial VxWorks PLT entry. */
95#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
96static const bfd_vma ppc_elf_vxworks_plt0_entry
97 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
98 {
99 0x3d800000, /* lis r12,0 */
100 0x398c0000, /* addi r12,r12,0 */
101 0x800c0008, /* lwz r0,8(r12) */
102 0x7c0903a6, /* mtctr r0 */
103 0x818c0004, /* lwz r12,4(r12) */
104 0x4e800420, /* bctr */
105 0x60000000, /* nop */
106 0x60000000, /* nop */
107 };
108static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
109 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
110 {
111 0x819e0008, /* lwz r12,8(r30) */
112 0x7d8903a6, /* mtctr r12 */
113 0x819e0004, /* lwz r12,4(r30) */
114 0x4e800420, /* bctr */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
119 };
120
121/* For executables, we have some additional relocations in
122 .rela.plt.unloaded, for the kernel loader. */
123
124/* The number of non-JMP_SLOT relocations per PLT0 slot. */
125#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
126/* The number of relocations in the PLTResolve slot. */
127#define VXWORKS_PLTRESOLVE_RELOCS 2
128/* The number of relocations in the PLTResolve slot when when creating
129 a shared library. */
130#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
131
d7128ce4 132/* Some instructions. */
d7128ce4 133#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM
134#define ADDIS_11_30 0x3d7e0000
135#define ADDIS_12_12 0x3d8c0000
d7128ce4 136#define ADDI_11_11 0x396b0000
d7128ce4
AM
137#define ADD_0_11_11 0x7c0b5a14
138#define ADD_11_0_11 0x7d605a14
a6aa5195
AM
139#define B 0x48000000
140#define BCL_20_31 0x429f0005
d7128ce4 141#define BCTR 0x4e800420
7e8aeb9a
AM
142#define LIS_11 0x3d600000
143#define LIS_12 0x3d800000
a6aa5195
AM
144#define LWZU_0_12 0x840c0000
145#define LWZ_0_12 0x800c0000
146#define LWZ_11_11 0x816b0000
147#define LWZ_11_30 0x817e0000
148#define LWZ_12_12 0x818c0000
149#define MFLR_0 0x7c0802a6
150#define MFLR_12 0x7d8802a6
151#define MTCTR_0 0x7c0903a6
152#define MTCTR_11 0x7d6903a6
153#define MTLR_0 0x7c0803a6
154#define NOP 0x60000000
155#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM
156
157/* Offset of tp and dtp pointers from start of TLS block. */
158#define TP_OFFSET 0x7000
159#define DTP_OFFSET 0x8000
e87d4038
AM
160
161/* The value of a defined global symbol. */
162#define SYM_VAL(SYM) \
163 ((SYM)->root.u.def.section->output_section->vma \
164 + (SYM)->root.u.def.section->output_offset \
165 + (SYM)->root.u.def.value)
7fce784e 166\f
e47cd125 167static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 168
8da6118f 169static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH
170 /* This reloc does nothing. */
171 HOWTO (R_PPC_NONE, /* type */
172 0, /* rightshift */
173 2, /* size (0 = byte, 1 = short, 2 = long) */
174 32, /* bitsize */
b34976b6 175 FALSE, /* pc_relative */
252b5132
RH
176 0, /* bitpos */
177 complain_overflow_bitfield, /* complain_on_overflow */
178 bfd_elf_generic_reloc, /* special_function */
179 "R_PPC_NONE", /* name */
b34976b6 180 FALSE, /* partial_inplace */
252b5132
RH
181 0, /* src_mask */
182 0, /* dst_mask */
b34976b6 183 FALSE), /* pcrel_offset */
252b5132
RH
184
185 /* A standard 32 bit relocation. */
186 HOWTO (R_PPC_ADDR32, /* type */
187 0, /* rightshift */
188 2, /* size (0 = byte, 1 = short, 2 = long) */
189 32, /* bitsize */
b34976b6 190 FALSE, /* pc_relative */
252b5132
RH
191 0, /* bitpos */
192 complain_overflow_bitfield, /* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_PPC_ADDR32", /* name */
b34976b6 195 FALSE, /* partial_inplace */
252b5132
RH
196 0, /* src_mask */
197 0xffffffff, /* dst_mask */
b34976b6 198 FALSE), /* pcrel_offset */
252b5132
RH
199
200 /* An absolute 26 bit branch; the lower two bits must be zero.
201 FIXME: we don't check that, we just clear them. */
202 HOWTO (R_PPC_ADDR24, /* type */
203 0, /* rightshift */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
205 26, /* bitsize */
b34976b6 206 FALSE, /* pc_relative */
252b5132
RH
207 0, /* bitpos */
208 complain_overflow_bitfield, /* complain_on_overflow */
209 bfd_elf_generic_reloc, /* special_function */
210 "R_PPC_ADDR24", /* name */
b34976b6 211 FALSE, /* partial_inplace */
252b5132
RH
212 0, /* src_mask */
213 0x3fffffc, /* dst_mask */
b34976b6 214 FALSE), /* pcrel_offset */
252b5132
RH
215
216 /* A standard 16 bit relocation. */
217 HOWTO (R_PPC_ADDR16, /* type */
218 0, /* rightshift */
219 1, /* size (0 = byte, 1 = short, 2 = long) */
220 16, /* bitsize */
b34976b6 221 FALSE, /* pc_relative */
252b5132
RH
222 0, /* bitpos */
223 complain_overflow_bitfield, /* complain_on_overflow */
224 bfd_elf_generic_reloc, /* special_function */
225 "R_PPC_ADDR16", /* name */
b34976b6 226 FALSE, /* partial_inplace */
252b5132
RH
227 0, /* src_mask */
228 0xffff, /* dst_mask */
b34976b6 229 FALSE), /* pcrel_offset */
252b5132
RH
230
231 /* A 16 bit relocation without overflow. */
232 HOWTO (R_PPC_ADDR16_LO, /* type */
233 0, /* rightshift */
234 1, /* size (0 = byte, 1 = short, 2 = long) */
235 16, /* bitsize */
b34976b6 236 FALSE, /* pc_relative */
252b5132
RH
237 0, /* bitpos */
238 complain_overflow_dont,/* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_PPC_ADDR16_LO", /* name */
b34976b6 241 FALSE, /* partial_inplace */
252b5132
RH
242 0, /* src_mask */
243 0xffff, /* dst_mask */
b34976b6 244 FALSE), /* pcrel_offset */
252b5132
RH
245
246 /* The high order 16 bits of an address. */
247 HOWTO (R_PPC_ADDR16_HI, /* type */
248 16, /* rightshift */
249 1, /* size (0 = byte, 1 = short, 2 = long) */
250 16, /* bitsize */
b34976b6 251 FALSE, /* pc_relative */
252b5132
RH
252 0, /* bitpos */
253 complain_overflow_dont, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_PPC_ADDR16_HI", /* name */
b34976b6 256 FALSE, /* partial_inplace */
252b5132
RH
257 0, /* src_mask */
258 0xffff, /* dst_mask */
b34976b6 259 FALSE), /* pcrel_offset */
252b5132
RH
260
261 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 262 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH
263 HOWTO (R_PPC_ADDR16_HA, /* type */
264 16, /* rightshift */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
266 16, /* bitsize */
b34976b6 267 FALSE, /* pc_relative */
252b5132
RH
268 0, /* bitpos */
269 complain_overflow_dont, /* complain_on_overflow */
270 ppc_elf_addr16_ha_reloc, /* special_function */
271 "R_PPC_ADDR16_HA", /* name */
b34976b6 272 FALSE, /* partial_inplace */
252b5132
RH
273 0, /* src_mask */
274 0xffff, /* dst_mask */
b34976b6 275 FALSE), /* pcrel_offset */
252b5132
RH
276
277 /* An absolute 16 bit branch; the lower two bits must be zero.
278 FIXME: we don't check that, we just clear them. */
279 HOWTO (R_PPC_ADDR14, /* type */
280 0, /* rightshift */
281 2, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
b34976b6 283 FALSE, /* pc_relative */
252b5132
RH
284 0, /* bitpos */
285 complain_overflow_bitfield, /* complain_on_overflow */
286 bfd_elf_generic_reloc, /* special_function */
287 "R_PPC_ADDR14", /* name */
b34976b6 288 FALSE, /* partial_inplace */
252b5132
RH
289 0, /* src_mask */
290 0xfffc, /* dst_mask */
b34976b6 291 FALSE), /* pcrel_offset */
252b5132
RH
292
293 /* An absolute 16 bit branch, for which bit 10 should be set to
294 indicate that the branch is expected to be taken. The lower two
8da6118f 295 bits must be zero. */
252b5132
RH
296 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
b34976b6 300 FALSE, /* pc_relative */
252b5132
RH
301 0, /* bitpos */
302 complain_overflow_bitfield, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 305 FALSE, /* partial_inplace */
252b5132
RH
306 0, /* src_mask */
307 0xfffc, /* dst_mask */
b34976b6 308 FALSE), /* pcrel_offset */
252b5132
RH
309
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is not expected to be taken. The lower
312 two bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
314 0, /* rightshift */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
316 16, /* bitsize */
b34976b6 317 FALSE, /* pc_relative */
252b5132
RH
318 0, /* bitpos */
319 complain_overflow_bitfield, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 322 FALSE, /* partial_inplace */
252b5132
RH
323 0, /* src_mask */
324 0xfffc, /* dst_mask */
b34976b6 325 FALSE), /* pcrel_offset */
252b5132 326
8da6118f 327 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH
328 HOWTO (R_PPC_REL24, /* type */
329 0, /* rightshift */
330 2, /* size (0 = byte, 1 = short, 2 = long) */
331 26, /* bitsize */
b34976b6 332 TRUE, /* pc_relative */
252b5132
RH
333 0, /* bitpos */
334 complain_overflow_signed, /* complain_on_overflow */
335 bfd_elf_generic_reloc, /* special_function */
336 "R_PPC_REL24", /* name */
b34976b6 337 FALSE, /* partial_inplace */
252b5132
RH
338 0, /* src_mask */
339 0x3fffffc, /* dst_mask */
b34976b6 340 TRUE), /* pcrel_offset */
252b5132 341
8da6118f 342 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH
343 HOWTO (R_PPC_REL14, /* type */
344 0, /* rightshift */
345 2, /* size (0 = byte, 1 = short, 2 = long) */
346 16, /* bitsize */
b34976b6 347 TRUE, /* pc_relative */
252b5132
RH
348 0, /* bitpos */
349 complain_overflow_signed, /* complain_on_overflow */
350 bfd_elf_generic_reloc, /* special_function */
351 "R_PPC_REL14", /* name */
b34976b6 352 FALSE, /* partial_inplace */
252b5132
RH
353 0, /* src_mask */
354 0xfffc, /* dst_mask */
b34976b6 355 TRUE), /* pcrel_offset */
252b5132 356
8da6118f 357 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
358 the branch is expected to be taken. The lower two bits must be
359 zero. */
360 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
361 0, /* rightshift */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
363 16, /* bitsize */
b34976b6 364 TRUE, /* pc_relative */
252b5132
RH
365 0, /* bitpos */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 369 FALSE, /* partial_inplace */
252b5132
RH
370 0, /* src_mask */
371 0xfffc, /* dst_mask */
b34976b6 372 TRUE), /* pcrel_offset */
252b5132 373
8da6118f 374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
375 the branch is not expected to be taken. The lower two bits must
376 be zero. */
377 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
b34976b6 381 TRUE, /* pc_relative */
252b5132
RH
382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 386 FALSE, /* partial_inplace */
252b5132
RH
387 0, /* src_mask */
388 0xfffc, /* dst_mask */
b34976b6 389 TRUE), /* pcrel_offset */
252b5132
RH
390
391 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
392 symbol. */
393 HOWTO (R_PPC_GOT16, /* type */
394 0, /* rightshift */
395 1, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
b34976b6 397 FALSE, /* pc_relative */
252b5132
RH
398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC_GOT16", /* name */
b34976b6 402 FALSE, /* partial_inplace */
252b5132
RH
403 0, /* src_mask */
404 0xffff, /* dst_mask */
b34976b6 405 FALSE), /* pcrel_offset */
252b5132
RH
406
407 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
408 the symbol. */
409 HOWTO (R_PPC_GOT16_LO, /* type */
410 0, /* rightshift */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
412 16, /* bitsize */
b34976b6 413 FALSE, /* pc_relative */
252b5132
RH
414 0, /* bitpos */
415 complain_overflow_dont, /* complain_on_overflow */
416 bfd_elf_generic_reloc, /* special_function */
417 "R_PPC_GOT16_LO", /* name */
b34976b6 418 FALSE, /* partial_inplace */
252b5132
RH
419 0, /* src_mask */
420 0xffff, /* dst_mask */
b34976b6 421 FALSE), /* pcrel_offset */
252b5132
RH
422
423 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
424 the symbol. */
425 HOWTO (R_PPC_GOT16_HI, /* type */
426 16, /* rightshift */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
428 16, /* bitsize */
b34976b6 429 FALSE, /* pc_relative */
252b5132
RH
430 0, /* bitpos */
431 complain_overflow_bitfield, /* complain_on_overflow */
432 bfd_elf_generic_reloc, /* special_function */
433 "R_PPC_GOT16_HI", /* name */
b34976b6 434 FALSE, /* partial_inplace */
252b5132
RH
435 0, /* src_mask */
436 0xffff, /* dst_mask */
b34976b6 437 FALSE), /* pcrel_offset */
252b5132
RH
438
439 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
440 the symbol. */
441 HOWTO (R_PPC_GOT16_HA, /* type */
442 16, /* rightshift */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
444 16, /* bitsize */
b34976b6 445 FALSE, /* pc_relative */
252b5132
RH
446 0, /* bitpos */
447 complain_overflow_bitfield, /* complain_on_overflow */
448 ppc_elf_addr16_ha_reloc, /* special_function */
449 "R_PPC_GOT16_HA", /* name */
b34976b6 450 FALSE, /* partial_inplace */
252b5132
RH
451 0, /* src_mask */
452 0xffff, /* dst_mask */
b34976b6 453 FALSE), /* pcrel_offset */
252b5132
RH
454
455 /* Like R_PPC_REL24, but referring to the procedure linkage table
456 entry for the symbol. */
457 HOWTO (R_PPC_PLTREL24, /* type */
458 0, /* rightshift */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
460 26, /* bitsize */
b34976b6 461 TRUE, /* pc_relative */
252b5132
RH
462 0, /* bitpos */
463 complain_overflow_signed, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_PPC_PLTREL24", /* name */
b34976b6 466 FALSE, /* partial_inplace */
252b5132
RH
467 0, /* src_mask */
468 0x3fffffc, /* dst_mask */
b34976b6 469 TRUE), /* pcrel_offset */
252b5132
RH
470
471 /* This is used only by the dynamic linker. The symbol should exist
472 both in the object being run and in some shared library. The
473 dynamic linker copies the data addressed by the symbol from the
474 shared library into the object, because the object being
475 run has to have the data at some particular address. */
476 HOWTO (R_PPC_COPY, /* type */
477 0, /* rightshift */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
479 32, /* bitsize */
b34976b6 480 FALSE, /* pc_relative */
252b5132
RH
481 0, /* bitpos */
482 complain_overflow_bitfield, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_PPC_COPY", /* name */
b34976b6 485 FALSE, /* partial_inplace */
252b5132
RH
486 0, /* src_mask */
487 0, /* dst_mask */
b34976b6 488 FALSE), /* pcrel_offset */
252b5132
RH
489
490 /* Like R_PPC_ADDR32, but used when setting global offset table
491 entries. */
492 HOWTO (R_PPC_GLOB_DAT, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 32, /* bitsize */
b34976b6 496 FALSE, /* pc_relative */
252b5132
RH
497 0, /* bitpos */
498 complain_overflow_bitfield, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_PPC_GLOB_DAT", /* name */
b34976b6 501 FALSE, /* partial_inplace */
252b5132
RH
502 0, /* src_mask */
503 0xffffffff, /* dst_mask */
b34976b6 504 FALSE), /* pcrel_offset */
252b5132
RH
505
506 /* Marks a procedure linkage table entry for a symbol. */
507 HOWTO (R_PPC_JMP_SLOT, /* type */
508 0, /* rightshift */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
510 32, /* bitsize */
b34976b6 511 FALSE, /* pc_relative */
252b5132
RH
512 0, /* bitpos */
513 complain_overflow_bitfield, /* complain_on_overflow */
514 bfd_elf_generic_reloc, /* special_function */
515 "R_PPC_JMP_SLOT", /* name */
b34976b6 516 FALSE, /* partial_inplace */
252b5132
RH
517 0, /* src_mask */
518 0, /* dst_mask */
b34976b6 519 FALSE), /* pcrel_offset */
252b5132
RH
520
521 /* Used only by the dynamic linker. When the object is run, this
522 longword is set to the load address of the object, plus the
523 addend. */
524 HOWTO (R_PPC_RELATIVE, /* type */
525 0, /* rightshift */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
527 32, /* bitsize */
b34976b6 528 FALSE, /* pc_relative */
252b5132
RH
529 0, /* bitpos */
530 complain_overflow_bitfield, /* complain_on_overflow */
531 bfd_elf_generic_reloc, /* special_function */
532 "R_PPC_RELATIVE", /* name */
b34976b6 533 FALSE, /* partial_inplace */
252b5132
RH
534 0, /* src_mask */
535 0xffffffff, /* dst_mask */
b34976b6 536 FALSE), /* pcrel_offset */
252b5132
RH
537
538 /* Like R_PPC_REL24, but uses the value of the symbol within the
539 object rather than the final value. Normally used for
540 _GLOBAL_OFFSET_TABLE_. */
541 HOWTO (R_PPC_LOCAL24PC, /* type */
542 0, /* rightshift */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
544 26, /* bitsize */
b34976b6 545 TRUE, /* pc_relative */
252b5132
RH
546 0, /* bitpos */
547 complain_overflow_signed, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_LOCAL24PC", /* name */
b34976b6 550 FALSE, /* partial_inplace */
252b5132
RH
551 0, /* src_mask */
552 0x3fffffc, /* dst_mask */
b34976b6 553 TRUE), /* pcrel_offset */
252b5132
RH
554
555 /* Like R_PPC_ADDR32, but may be unaligned. */
556 HOWTO (R_PPC_UADDR32, /* type */
557 0, /* rightshift */
558 2, /* size (0 = byte, 1 = short, 2 = long) */
559 32, /* bitsize */
b34976b6 560 FALSE, /* pc_relative */
252b5132
RH
561 0, /* bitpos */
562 complain_overflow_bitfield, /* complain_on_overflow */
563 bfd_elf_generic_reloc, /* special_function */
564 "R_PPC_UADDR32", /* name */
b34976b6 565 FALSE, /* partial_inplace */
252b5132
RH
566 0, /* src_mask */
567 0xffffffff, /* dst_mask */
b34976b6 568 FALSE), /* pcrel_offset */
252b5132
RH
569
570 /* Like R_PPC_ADDR16, but may be unaligned. */
571 HOWTO (R_PPC_UADDR16, /* type */
572 0, /* rightshift */
573 1, /* size (0 = byte, 1 = short, 2 = long) */
574 16, /* bitsize */
b34976b6 575 FALSE, /* pc_relative */
252b5132
RH
576 0, /* bitpos */
577 complain_overflow_bitfield, /* complain_on_overflow */
578 bfd_elf_generic_reloc, /* special_function */
579 "R_PPC_UADDR16", /* name */
b34976b6 580 FALSE, /* partial_inplace */
252b5132
RH
581 0, /* src_mask */
582 0xffff, /* dst_mask */
b34976b6 583 FALSE), /* pcrel_offset */
252b5132
RH
584
585 /* 32-bit PC relative */
586 HOWTO (R_PPC_REL32, /* type */
587 0, /* rightshift */
588 2, /* size (0 = byte, 1 = short, 2 = long) */
589 32, /* bitsize */
b34976b6 590 TRUE, /* pc_relative */
252b5132
RH
591 0, /* bitpos */
592 complain_overflow_bitfield, /* complain_on_overflow */
593 bfd_elf_generic_reloc, /* special_function */
594 "R_PPC_REL32", /* name */
b34976b6 595 FALSE, /* partial_inplace */
252b5132
RH
596 0, /* src_mask */
597 0xffffffff, /* dst_mask */
b34976b6 598 TRUE), /* pcrel_offset */
252b5132
RH
599
600 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 601 FIXME: not supported. */
252b5132
RH
602 HOWTO (R_PPC_PLT32, /* type */
603 0, /* rightshift */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
605 32, /* bitsize */
b34976b6 606 FALSE, /* pc_relative */
252b5132
RH
607 0, /* bitpos */
608 complain_overflow_bitfield, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_PLT32", /* name */
b34976b6 611 FALSE, /* partial_inplace */
252b5132
RH
612 0, /* src_mask */
613 0, /* dst_mask */
b34976b6 614 FALSE), /* pcrel_offset */
252b5132
RH
615
616 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 617 FIXME: not supported. */
252b5132
RH
618 HOWTO (R_PPC_PLTREL32, /* type */
619 0, /* rightshift */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
621 32, /* bitsize */
b34976b6 622 TRUE, /* pc_relative */
252b5132
RH
623 0, /* bitpos */
624 complain_overflow_bitfield, /* complain_on_overflow */
625 bfd_elf_generic_reloc, /* special_function */
626 "R_PPC_PLTREL32", /* name */
b34976b6 627 FALSE, /* partial_inplace */
252b5132
RH
628 0, /* src_mask */
629 0, /* dst_mask */
b34976b6 630 TRUE), /* pcrel_offset */
252b5132
RH
631
632 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
633 the symbol. */
634 HOWTO (R_PPC_PLT16_LO, /* type */
635 0, /* rightshift */
636 1, /* size (0 = byte, 1 = short, 2 = long) */
637 16, /* bitsize */
b34976b6 638 FALSE, /* pc_relative */
252b5132
RH
639 0, /* bitpos */
640 complain_overflow_dont, /* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_PPC_PLT16_LO", /* name */
b34976b6 643 FALSE, /* partial_inplace */
252b5132
RH
644 0, /* src_mask */
645 0xffff, /* dst_mask */
b34976b6 646 FALSE), /* pcrel_offset */
252b5132
RH
647
648 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
649 the symbol. */
650 HOWTO (R_PPC_PLT16_HI, /* type */
651 16, /* rightshift */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
653 16, /* bitsize */
b34976b6 654 FALSE, /* pc_relative */
252b5132
RH
655 0, /* bitpos */
656 complain_overflow_bitfield, /* complain_on_overflow */
657 bfd_elf_generic_reloc, /* special_function */
658 "R_PPC_PLT16_HI", /* name */
b34976b6 659 FALSE, /* partial_inplace */
252b5132
RH
660 0, /* src_mask */
661 0xffff, /* dst_mask */
b34976b6 662 FALSE), /* pcrel_offset */
252b5132
RH
663
664 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
665 the symbol. */
666 HOWTO (R_PPC_PLT16_HA, /* type */
667 16, /* rightshift */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
669 16, /* bitsize */
b34976b6 670 FALSE, /* pc_relative */
252b5132
RH
671 0, /* bitpos */
672 complain_overflow_bitfield, /* complain_on_overflow */
673 ppc_elf_addr16_ha_reloc, /* special_function */
674 "R_PPC_PLT16_HA", /* name */
b34976b6 675 FALSE, /* partial_inplace */
252b5132
RH
676 0, /* src_mask */
677 0xffff, /* dst_mask */
b34976b6 678 FALSE), /* pcrel_offset */
252b5132
RH
679
680 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
681 small data items. */
682 HOWTO (R_PPC_SDAREL16, /* type */
683 0, /* rightshift */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
b34976b6 686 FALSE, /* pc_relative */
252b5132
RH
687 0, /* bitpos */
688 complain_overflow_signed, /* complain_on_overflow */
689 bfd_elf_generic_reloc, /* special_function */
690 "R_PPC_SDAREL16", /* name */
b34976b6 691 FALSE, /* partial_inplace */
252b5132
RH
692 0, /* src_mask */
693 0xffff, /* dst_mask */
b34976b6 694 FALSE), /* pcrel_offset */
252b5132 695
c061c2d8 696 /* 16-bit section relative relocation. */
252b5132
RH
697 HOWTO (R_PPC_SECTOFF, /* type */
698 0, /* rightshift */
c061c2d8
AM
699 1, /* size (0 = byte, 1 = short, 2 = long) */
700 16, /* bitsize */
b34976b6 701 FALSE, /* pc_relative */
252b5132
RH
702 0, /* bitpos */
703 complain_overflow_bitfield, /* complain_on_overflow */
704 bfd_elf_generic_reloc, /* special_function */
705 "R_PPC_SECTOFF", /* name */
b34976b6 706 FALSE, /* partial_inplace */
252b5132 707 0, /* src_mask */
c061c2d8 708 0xffff, /* dst_mask */
b34976b6 709 FALSE), /* pcrel_offset */
252b5132 710
c3668558 711 /* 16-bit lower half section relative relocation. */
252b5132
RH
712 HOWTO (R_PPC_SECTOFF_LO, /* type */
713 0, /* rightshift */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
715 16, /* bitsize */
b34976b6 716 FALSE, /* pc_relative */
252b5132
RH
717 0, /* bitpos */
718 complain_overflow_dont, /* complain_on_overflow */
719 bfd_elf_generic_reloc, /* special_function */
720 "R_PPC_SECTOFF_LO", /* name */
b34976b6 721 FALSE, /* partial_inplace */
252b5132
RH
722 0, /* src_mask */
723 0xffff, /* dst_mask */
b34976b6 724 FALSE), /* pcrel_offset */
252b5132 725
c3668558 726 /* 16-bit upper half section relative relocation. */
252b5132
RH
727 HOWTO (R_PPC_SECTOFF_HI, /* type */
728 16, /* rightshift */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
b34976b6 731 FALSE, /* pc_relative */
252b5132
RH
732 0, /* bitpos */
733 complain_overflow_bitfield, /* complain_on_overflow */
734 bfd_elf_generic_reloc, /* special_function */
735 "R_PPC_SECTOFF_HI", /* name */
b34976b6 736 FALSE, /* partial_inplace */
252b5132
RH
737 0, /* src_mask */
738 0xffff, /* dst_mask */
b34976b6 739 FALSE), /* pcrel_offset */
252b5132 740
c3668558 741 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH
742 HOWTO (R_PPC_SECTOFF_HA, /* type */
743 16, /* rightshift */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
745 16, /* bitsize */
b34976b6 746 FALSE, /* pc_relative */
252b5132
RH
747 0, /* bitpos */
748 complain_overflow_bitfield, /* complain_on_overflow */
749 ppc_elf_addr16_ha_reloc, /* special_function */
750 "R_PPC_SECTOFF_HA", /* name */
b34976b6 751 FALSE, /* partial_inplace */
252b5132
RH
752 0, /* src_mask */
753 0xffff, /* dst_mask */
b34976b6 754 FALSE), /* pcrel_offset */
252b5132 755
727fc41e 756 /* Marker relocs for TLS. */
7619e7c7 757 HOWTO (R_PPC_TLS,
252b5132
RH
758 0, /* rightshift */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
760 32, /* bitsize */
b34976b6 761 FALSE, /* pc_relative */
252b5132 762 0, /* bitpos */
7619e7c7 763 complain_overflow_dont, /* complain_on_overflow */
252b5132 764 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM
765 "R_PPC_TLS", /* name */
766 FALSE, /* partial_inplace */
767 0, /* src_mask */
768 0, /* dst_mask */
769 FALSE), /* pcrel_offset */
770
727fc41e
AM
771 HOWTO (R_PPC_TLSGD,
772 0, /* rightshift */
773 2, /* size (0 = byte, 1 = short, 2 = long) */
774 32, /* bitsize */
775 FALSE, /* pc_relative */
776 0, /* bitpos */
777 complain_overflow_dont, /* complain_on_overflow */
778 bfd_elf_generic_reloc, /* special_function */
779 "R_PPC_TLSGD", /* name */
780 FALSE, /* partial_inplace */
781 0, /* src_mask */
782 0, /* dst_mask */
783 FALSE), /* pcrel_offset */
784
785 HOWTO (R_PPC_TLSLD,
786 0, /* rightshift */
787 2, /* size (0 = byte, 1 = short, 2 = long) */
788 32, /* bitsize */
789 FALSE, /* pc_relative */
790 0, /* bitpos */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC_TLSLD", /* name */
794 FALSE, /* partial_inplace */
795 0, /* src_mask */
796 0, /* dst_mask */
797 FALSE), /* pcrel_offset */
798
7619e7c7
AM
799 /* Computes the load module index of the load module that contains the
800 definition of its TLS sym. */
801 HOWTO (R_PPC_DTPMOD32,
802 0, /* rightshift */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
804 32, /* bitsize */
805 FALSE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_dont, /* complain_on_overflow */
808 ppc_elf_unhandled_reloc, /* special_function */
809 "R_PPC_DTPMOD32", /* name */
b34976b6 810 FALSE, /* partial_inplace */
252b5132
RH
811 0, /* src_mask */
812 0xffffffff, /* dst_mask */
b34976b6 813 FALSE), /* pcrel_offset */
252b5132 814
7619e7c7
AM
815 /* Computes a dtv-relative displacement, the difference between the value
816 of sym+add and the base address of the thread-local storage block that
817 contains the definition of sym, minus 0x8000. */
818 HOWTO (R_PPC_DTPREL32,
819 0, /* rightshift */
820 2, /* size (0 = byte, 1 = short, 2 = long) */
821 32, /* bitsize */
822 FALSE, /* pc_relative */
823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPREL32", /* name */
827 FALSE, /* partial_inplace */
828 0, /* src_mask */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
831
832 /* A 16 bit dtprel reloc. */
833 HOWTO (R_PPC_DTPREL16,
252b5132
RH
834 0, /* rightshift */
835 1, /* size (0 = byte, 1 = short, 2 = long) */
836 16, /* bitsize */
b34976b6 837 FALSE, /* pc_relative */
252b5132 838 0, /* bitpos */
7619e7c7
AM
839 complain_overflow_signed, /* complain_on_overflow */
840 ppc_elf_unhandled_reloc, /* special_function */
841 "R_PPC_DTPREL16", /* name */
b34976b6 842 FALSE, /* partial_inplace */
252b5132
RH
843 0, /* src_mask */
844 0xffff, /* dst_mask */
b34976b6 845 FALSE), /* pcrel_offset */
252b5132 846
7619e7c7
AM
847 /* Like DTPREL16, but no overflow. */
848 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH
849 0, /* rightshift */
850 1, /* size (0 = byte, 1 = short, 2 = long) */
851 16, /* bitsize */
b34976b6 852 FALSE, /* pc_relative */
252b5132 853 0, /* bitpos */
7619e7c7
AM
854 complain_overflow_dont, /* complain_on_overflow */
855 ppc_elf_unhandled_reloc, /* special_function */
856 "R_PPC_DTPREL16_LO", /* name */
b34976b6 857 FALSE, /* partial_inplace */
252b5132
RH
858 0, /* src_mask */
859 0xffff, /* dst_mask */
b34976b6 860 FALSE), /* pcrel_offset */
252b5132 861
7619e7c7
AM
862 /* Like DTPREL16_LO, but next higher group of 16 bits. */
863 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH
864 16, /* rightshift */
865 1, /* size (0 = byte, 1 = short, 2 = long) */
866 16, /* bitsize */
b34976b6 867 FALSE, /* pc_relative */
252b5132
RH
868 0, /* bitpos */
869 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
870 ppc_elf_unhandled_reloc, /* special_function */
871 "R_PPC_DTPREL16_HI", /* name */
b34976b6 872 FALSE, /* partial_inplace */
252b5132
RH
873 0, /* src_mask */
874 0xffff, /* dst_mask */
b34976b6 875 FALSE), /* pcrel_offset */
252b5132 876
7619e7c7
AM
877 /* Like DTPREL16_HI, but adjust for low 16 bits. */
878 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH
879 16, /* rightshift */
880 1, /* size (0 = byte, 1 = short, 2 = long) */
881 16, /* bitsize */
b34976b6 882 FALSE, /* pc_relative */
252b5132
RH
883 0, /* bitpos */
884 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
885 ppc_elf_unhandled_reloc, /* special_function */
886 "R_PPC_DTPREL16_HA", /* name */
b34976b6 887 FALSE, /* partial_inplace */
252b5132
RH
888 0, /* src_mask */
889 0xffff, /* dst_mask */
b34976b6 890 FALSE), /* pcrel_offset */
252b5132 891
7619e7c7
AM
892 /* Computes a tp-relative displacement, the difference between the value of
893 sym+add and the value of the thread pointer (r13). */
894 HOWTO (R_PPC_TPREL32,
895 0, /* rightshift */
896 2, /* size (0 = byte, 1 = short, 2 = long) */
897 32, /* bitsize */
898 FALSE, /* pc_relative */
899 0, /* bitpos */
900 complain_overflow_dont, /* complain_on_overflow */
901 ppc_elf_unhandled_reloc, /* special_function */
902 "R_PPC_TPREL32", /* name */
903 FALSE, /* partial_inplace */
904 0, /* src_mask */
905 0xffffffff, /* dst_mask */
906 FALSE), /* pcrel_offset */
907
908 /* A 16 bit tprel reloc. */
909 HOWTO (R_PPC_TPREL16,
252b5132
RH
910 0, /* rightshift */
911 1, /* size (0 = byte, 1 = short, 2 = long) */
912 16, /* bitsize */
b34976b6 913 FALSE, /* pc_relative */
252b5132 914 0, /* bitpos */
7619e7c7
AM
915 complain_overflow_signed, /* complain_on_overflow */
916 ppc_elf_unhandled_reloc, /* special_function */
917 "R_PPC_TPREL16", /* name */
b34976b6 918 FALSE, /* partial_inplace */
252b5132
RH
919 0, /* src_mask */
920 0xffff, /* dst_mask */
b34976b6 921 FALSE), /* pcrel_offset */
252b5132 922
7619e7c7
AM
923 /* Like TPREL16, but no overflow. */
924 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH
925 0, /* rightshift */
926 1, /* size (0 = byte, 1 = short, 2 = long) */
927 16, /* bitsize */
b34976b6 928 FALSE, /* pc_relative */
252b5132 929 0, /* bitpos */
7619e7c7
AM
930 complain_overflow_dont, /* complain_on_overflow */
931 ppc_elf_unhandled_reloc, /* special_function */
932 "R_PPC_TPREL16_LO", /* name */
b34976b6 933 FALSE, /* partial_inplace */
252b5132
RH
934 0, /* src_mask */
935 0xffff, /* dst_mask */
b34976b6 936 FALSE), /* pcrel_offset */
252b5132 937
7619e7c7
AM
938 /* Like TPREL16_LO, but next higher group of 16 bits. */
939 HOWTO (R_PPC_TPREL16_HI,
940 16, /* rightshift */
941 1, /* size (0 = byte, 1 = short, 2 = long) */
942 16, /* bitsize */
943 FALSE, /* pc_relative */
944 0, /* bitpos */
945 complain_overflow_dont, /* complain_on_overflow */
946 ppc_elf_unhandled_reloc, /* special_function */
947 "R_PPC_TPREL16_HI", /* name */
948 FALSE, /* partial_inplace */
949 0, /* src_mask */
950 0xffff, /* dst_mask */
951 FALSE), /* pcrel_offset */
952
953 /* Like TPREL16_HI, but adjust for low 16 bits. */
954 HOWTO (R_PPC_TPREL16_HA,
955 16, /* rightshift */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
957 16, /* bitsize */
958 FALSE, /* pc_relative */
959 0, /* bitpos */
960 complain_overflow_dont, /* complain_on_overflow */
961 ppc_elf_unhandled_reloc, /* special_function */
962 "R_PPC_TPREL16_HA", /* name */
963 FALSE, /* partial_inplace */
964 0, /* src_mask */
965 0xffff, /* dst_mask */
966 FALSE), /* pcrel_offset */
967
968 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
969 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
970 to the first entry. */
971 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH
972 0, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
b34976b6 975 FALSE, /* pc_relative */
252b5132
RH
976 0, /* bitpos */
977 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 980 FALSE, /* partial_inplace */
252b5132
RH
981 0, /* src_mask */
982 0xffff, /* dst_mask */
b34976b6 983 FALSE), /* pcrel_offset */
252b5132 984
7619e7c7
AM
985 /* Like GOT_TLSGD16, but no overflow. */
986 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 987 0, /* rightshift */
7619e7c7 988 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 989 16, /* bitsize */
b34976b6 990 FALSE, /* pc_relative */
252b5132 991 0, /* bitpos */
7619e7c7
AM
992 complain_overflow_dont, /* complain_on_overflow */
993 ppc_elf_unhandled_reloc, /* special_function */
994 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 995 FALSE, /* partial_inplace */
252b5132
RH
996 0, /* src_mask */
997 0xffff, /* dst_mask */
b34976b6 998 FALSE), /* pcrel_offset */
252b5132 999
7619e7c7
AM
1000 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1001 HOWTO (R_PPC_GOT_TLSGD16_HI,
1002 16, /* rightshift */
1003 1, /* size (0 = byte, 1 = short, 2 = long) */
1004 16, /* bitsize */
1005 FALSE, /* pc_relative */
1006 0, /* bitpos */
1007 complain_overflow_dont, /* complain_on_overflow */
1008 ppc_elf_unhandled_reloc, /* special_function */
1009 "R_PPC_GOT_TLSGD16_HI", /* name */
1010 FALSE, /* partial_inplace */
1011 0, /* src_mask */
1012 0xffff, /* dst_mask */
1013 FALSE), /* pcrel_offset */
252b5132 1014
7619e7c7
AM
1015 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1016 HOWTO (R_PPC_GOT_TLSGD16_HA,
1017 16, /* rightshift */
1018 1, /* size (0 = byte, 1 = short, 2 = long) */
1019 16, /* bitsize */
1020 FALSE, /* pc_relative */
1021 0, /* bitpos */
1022 complain_overflow_dont, /* complain_on_overflow */
1023 ppc_elf_unhandled_reloc, /* special_function */
1024 "R_PPC_GOT_TLSGD16_HA", /* name */
1025 FALSE, /* partial_inplace */
1026 0, /* src_mask */
1027 0xffff, /* dst_mask */
1028 FALSE), /* pcrel_offset */
1029
1030 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1031 with values (sym+add)@dtpmod and zero, and computes the offset to the
1032 first entry. */
1033 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH
1034 0, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 16, /* bitsize */
7619e7c7 1037 FALSE, /* pc_relative */
252b5132
RH
1038 0, /* bitpos */
1039 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1042 FALSE, /* partial_inplace */
252b5132
RH
1043 0, /* src_mask */
1044 0xffff, /* dst_mask */
b34976b6 1045 FALSE), /* pcrel_offset */
252b5132 1046
7619e7c7
AM
1047 /* Like GOT_TLSLD16, but no overflow. */
1048 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1049 0, /* rightshift */
7619e7c7
AM
1050 1, /* size (0 = byte, 1 = short, 2 = long) */
1051 16, /* bitsize */
b34976b6 1052 FALSE, /* pc_relative */
252b5132
RH
1053 0, /* bitpos */
1054 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1055 ppc_elf_unhandled_reloc, /* special_function */
1056 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1057 FALSE, /* partial_inplace */
252b5132 1058 0, /* src_mask */
7619e7c7 1059 0xffff, /* dst_mask */
b34976b6 1060 FALSE), /* pcrel_offset */
252b5132 1061
7619e7c7
AM
1062 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1063 HOWTO (R_PPC_GOT_TLSLD16_HI,
1064 16, /* rightshift */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 16, /* bitsize */
b34976b6 1067 FALSE, /* pc_relative */
252b5132
RH
1068 0, /* bitpos */
1069 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1070 ppc_elf_unhandled_reloc, /* special_function */
1071 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1072 FALSE, /* partial_inplace */
252b5132 1073 0, /* src_mask */
7619e7c7 1074 0xffff, /* dst_mask */
b34976b6 1075 FALSE), /* pcrel_offset */
252b5132 1076
7619e7c7
AM
1077 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1078 HOWTO (R_PPC_GOT_TLSLD16_HA,
1079 16, /* rightshift */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1081 16, /* bitsize */
1082 FALSE, /* pc_relative */
1083 0, /* bitpos */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 ppc_elf_unhandled_reloc, /* special_function */
1086 "R_PPC_GOT_TLSLD16_HA", /* name */
1087 FALSE, /* partial_inplace */
1088 0, /* src_mask */
1089 0xffff, /* dst_mask */
1090 FALSE), /* pcrel_offset */
1091
1092 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1093 the offset to the entry. */
1094 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH
1095 0, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1097 16, /* bitsize */
b34976b6 1098 FALSE, /* pc_relative */
252b5132
RH
1099 0, /* bitpos */
1100 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1101 ppc_elf_unhandled_reloc, /* special_function */
1102 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1103 FALSE, /* partial_inplace */
252b5132
RH
1104 0, /* src_mask */
1105 0xffff, /* dst_mask */
b34976b6 1106 FALSE), /* pcrel_offset */
252b5132 1107
7619e7c7
AM
1108 /* Like GOT_DTPREL16, but no overflow. */
1109 HOWTO (R_PPC_GOT_DTPREL16_LO,
1110 0, /* rightshift */
1111 1, /* size (0 = byte, 1 = short, 2 = long) */
1112 16, /* bitsize */
1113 FALSE, /* pc_relative */
1114 0, /* bitpos */
1115 complain_overflow_dont, /* complain_on_overflow */
1116 ppc_elf_unhandled_reloc, /* special_function */
1117 "R_PPC_GOT_DTPREL16_LO", /* name */
1118 FALSE, /* partial_inplace */
1119 0, /* src_mask */
1120 0xffff, /* dst_mask */
1121 FALSE), /* pcrel_offset */
252b5132 1122
7619e7c7
AM
1123 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1124 HOWTO (R_PPC_GOT_DTPREL16_HI,
1125 16, /* rightshift */
1126 1, /* size (0 = byte, 1 = short, 2 = long) */
1127 16, /* bitsize */
1128 FALSE, /* pc_relative */
1129 0, /* bitpos */
1130 complain_overflow_dont, /* complain_on_overflow */
1131 ppc_elf_unhandled_reloc, /* special_function */
1132 "R_PPC_GOT_DTPREL16_HI", /* name */
1133 FALSE, /* partial_inplace */
1134 0, /* src_mask */
1135 0xffff, /* dst_mask */
1136 FALSE), /* pcrel_offset */
252b5132 1137
7619e7c7
AM
1138 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1139 HOWTO (R_PPC_GOT_DTPREL16_HA,
1140 16, /* rightshift */
1141 1, /* size (0 = byte, 1 = short, 2 = long) */
1142 16, /* bitsize */
1143 FALSE, /* pc_relative */
1144 0, /* bitpos */
1145 complain_overflow_dont, /* complain_on_overflow */
1146 ppc_elf_unhandled_reloc, /* special_function */
1147 "R_PPC_GOT_DTPREL16_HA", /* name */
1148 FALSE, /* partial_inplace */
1149 0, /* src_mask */
1150 0xffff, /* dst_mask */
1151 FALSE), /* pcrel_offset */
c3668558 1152
7619e7c7
AM
1153 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1154 offset to the entry. */
1155 HOWTO (R_PPC_GOT_TPREL16,
1156 0, /* rightshift */
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1158 16, /* bitsize */
1159 FALSE, /* pc_relative */
1160 0, /* bitpos */
1161 complain_overflow_signed, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc, /* special_function */
1163 "R_PPC_GOT_TPREL16", /* name */
1164 FALSE, /* partial_inplace */
1165 0, /* src_mask */
1166 0xffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1168
1169 /* Like GOT_TPREL16, but no overflow. */
1170 HOWTO (R_PPC_GOT_TPREL16_LO,
1171 0, /* rightshift */
1172 1, /* size (0 = byte, 1 = short, 2 = long) */
1173 16, /* bitsize */
1174 FALSE, /* pc_relative */
1175 0, /* bitpos */
1176 complain_overflow_dont, /* complain_on_overflow */
1177 ppc_elf_unhandled_reloc, /* special_function */
1178 "R_PPC_GOT_TPREL16_LO", /* name */
1179 FALSE, /* partial_inplace */
1180 0, /* src_mask */
1181 0xffff, /* dst_mask */
1182 FALSE), /* pcrel_offset */
1183
1184 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1185 HOWTO (R_PPC_GOT_TPREL16_HI,
1186 16, /* rightshift */
1187 1, /* size (0 = byte, 1 = short, 2 = long) */
1188 16, /* bitsize */
1189 FALSE, /* pc_relative */
1190 0, /* bitpos */
1191 complain_overflow_dont, /* complain_on_overflow */
1192 ppc_elf_unhandled_reloc, /* special_function */
1193 "R_PPC_GOT_TPREL16_HI", /* name */
1194 FALSE, /* partial_inplace */
1195 0, /* src_mask */
1196 0xffff, /* dst_mask */
1197 FALSE), /* pcrel_offset */
1198
1199 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1200 HOWTO (R_PPC_GOT_TPREL16_HA,
1201 16, /* rightshift */
1202 1, /* size (0 = byte, 1 = short, 2 = long) */
1203 16, /* bitsize */
1204 FALSE, /* pc_relative */
1205 0, /* bitpos */
1206 complain_overflow_dont, /* complain_on_overflow */
1207 ppc_elf_unhandled_reloc, /* special_function */
1208 "R_PPC_GOT_TPREL16_HA", /* name */
1209 FALSE, /* partial_inplace */
1210 0, /* src_mask */
1211 0xffff, /* dst_mask */
1212 FALSE), /* pcrel_offset */
1213
1214 /* The remaining relocs are from the Embedded ELF ABI, and are not
1215 in the SVR4 ELF ABI. */
1216
1217 /* 32 bit value resulting from the addend minus the symbol. */
1218 HOWTO (R_PPC_EMB_NADDR32, /* type */
1219 0, /* rightshift */
1220 2, /* size (0 = byte, 1 = short, 2 = long) */
1221 32, /* bitsize */
1222 FALSE, /* pc_relative */
1223 0, /* bitpos */
1224 complain_overflow_bitfield, /* complain_on_overflow */
1225 bfd_elf_generic_reloc, /* special_function */
1226 "R_PPC_EMB_NADDR32", /* name */
1227 FALSE, /* partial_inplace */
1228 0, /* src_mask */
1229 0xffffffff, /* dst_mask */
1230 FALSE), /* pcrel_offset */
1231
1232 /* 16 bit value resulting from the addend minus the symbol. */
1233 HOWTO (R_PPC_EMB_NADDR16, /* type */
1234 0, /* rightshift */
1235 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 16, /* bitsize */
1237 FALSE, /* pc_relative */
1238 0, /* bitpos */
1239 complain_overflow_bitfield, /* complain_on_overflow */
1240 bfd_elf_generic_reloc, /* special_function */
1241 "R_PPC_EMB_NADDR16", /* name */
1242 FALSE, /* partial_inplace */
1243 0, /* src_mask */
1244 0xffff, /* dst_mask */
1245 FALSE), /* pcrel_offset */
1246
1247 /* 16 bit value resulting from the addend minus the symbol. */
1248 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1249 0, /* rightshift */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1251 16, /* bitsize */
1252 FALSE, /* pc_relative */
1253 0, /* bitpos */
1254 complain_overflow_dont,/* complain_on_overflow */
1255 bfd_elf_generic_reloc, /* special_function */
1256 "R_PPC_EMB_ADDR16_LO", /* name */
1257 FALSE, /* partial_inplace */
1258 0, /* src_mask */
1259 0xffff, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1261
1262 /* The high order 16 bits of the addend minus the symbol. */
1263 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1264 16, /* rightshift */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1266 16, /* bitsize */
1267 FALSE, /* pc_relative */
1268 0, /* bitpos */
1269 complain_overflow_dont, /* complain_on_overflow */
1270 bfd_elf_generic_reloc, /* special_function */
1271 "R_PPC_EMB_NADDR16_HI", /* name */
1272 FALSE, /* partial_inplace */
1273 0, /* src_mask */
1274 0xffff, /* dst_mask */
1275 FALSE), /* pcrel_offset */
1276
1277 /* The high order 16 bits of the result of the addend minus the address,
1278 plus 1 if the contents of the low 16 bits, treated as a signed number,
1279 is negative. */
1280 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_dont, /* complain_on_overflow */
25dbc73a
AM
1287 ppc_elf_addr16_ha_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HA", /* name */
1289 FALSE, /* partial_inplace */
1290 0, /* src_mask */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 /* 16 bit value resulting from allocating a 4 byte word to hold an
1295 address in the .sdata section, and returning the offset from
1296 _SDA_BASE_ for that relocation. */
1297 HOWTO (R_PPC_EMB_SDAI16, /* type */
1298 0, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 16, /* bitsize */
1301 FALSE, /* pc_relative */
1302 0, /* bitpos */
1303 complain_overflow_bitfield, /* complain_on_overflow */
1304 bfd_elf_generic_reloc, /* special_function */
1305 "R_PPC_EMB_SDAI16", /* name */
1306 FALSE, /* partial_inplace */
1307 0, /* src_mask */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1310
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata2 section, and returning the offset from
1313 _SDA2_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1315 0, /* rightshift */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 16, /* bitsize */
1318 FALSE, /* pc_relative */
1319 0, /* bitpos */
1320 complain_overflow_bitfield, /* complain_on_overflow */
1321 bfd_elf_generic_reloc, /* special_function */
1322 "R_PPC_EMB_SDA2I16", /* name */
1323 FALSE, /* partial_inplace */
1324 0, /* src_mask */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1327
1328 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1329 small data items. */
1330 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1331 0, /* rightshift */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1333 16, /* bitsize */
1334 FALSE, /* pc_relative */
1335 0, /* bitpos */
1336 complain_overflow_signed, /* complain_on_overflow */
1337 bfd_elf_generic_reloc, /* special_function */
1338 "R_PPC_EMB_SDA2REL", /* name */
1339 FALSE, /* partial_inplace */
1340 0, /* src_mask */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1343
1344 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1345 signed offset from the appropriate base, and filling in the register
1346 field with the appropriate register (0, 2, or 13). */
1347 HOWTO (R_PPC_EMB_SDA21, /* type */
1348 0, /* rightshift */
1349 2, /* size (0 = byte, 1 = short, 2 = long) */
1350 16, /* bitsize */
1351 FALSE, /* pc_relative */
1352 0, /* bitpos */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 bfd_elf_generic_reloc, /* special_function */
1355 "R_PPC_EMB_SDA21", /* name */
1356 FALSE, /* partial_inplace */
1357 0, /* src_mask */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* Relocation not handled: R_PPC_EMB_MRKREF */
1362 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1363 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1364 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1365 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1366 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1367
1368 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1369 in the 16 bit signed offset from the appropriate base, and filling in the
1370 register field with the appropriate register (0, 2, or 13). */
1371 HOWTO (R_PPC_EMB_RELSDA, /* type */
1372 0, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1374 16, /* bitsize */
1375 TRUE, /* pc_relative */
1376 0, /* bitpos */
1377 complain_overflow_signed, /* complain_on_overflow */
1378 bfd_elf_generic_reloc, /* special_function */
1379 "R_PPC_EMB_RELSDA", /* name */
1380 FALSE, /* partial_inplace */
1381 0, /* src_mask */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1384
d7128ce4
AM
1385 /* A 16 bit relative relocation. */
1386 HOWTO (R_PPC_REL16, /* type */
1387 0, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1389 16, /* bitsize */
1390 TRUE, /* pc_relative */
1391 0, /* bitpos */
1392 complain_overflow_bitfield, /* complain_on_overflow */
1393 bfd_elf_generic_reloc, /* special_function */
1394 "R_PPC_REL16", /* name */
1395 FALSE, /* partial_inplace */
1396 0, /* src_mask */
1397 0xffff, /* dst_mask */
1398 TRUE), /* pcrel_offset */
1399
1400 /* A 16 bit relative relocation without overflow. */
1401 HOWTO (R_PPC_REL16_LO, /* type */
1402 0, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1404 16, /* bitsize */
1405 TRUE, /* pc_relative */
1406 0, /* bitpos */
1407 complain_overflow_dont,/* complain_on_overflow */
1408 bfd_elf_generic_reloc, /* special_function */
1409 "R_PPC_REL16_LO", /* name */
1410 FALSE, /* partial_inplace */
1411 0, /* src_mask */
1412 0xffff, /* dst_mask */
1413 TRUE), /* pcrel_offset */
1414
1415 /* The high order 16 bits of a relative address. */
1416 HOWTO (R_PPC_REL16_HI, /* type */
1417 16, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1419 16, /* bitsize */
1420 TRUE, /* pc_relative */
1421 0, /* bitpos */
1422 complain_overflow_dont, /* complain_on_overflow */
1423 bfd_elf_generic_reloc, /* special_function */
1424 "R_PPC_REL16_HI", /* name */
1425 FALSE, /* partial_inplace */
1426 0, /* src_mask */
1427 0xffff, /* dst_mask */
1428 TRUE), /* pcrel_offset */
1429
1430 /* The high order 16 bits of a relative address, plus 1 if the contents of
1431 the low 16 bits, treated as a signed number, is negative. */
1432 HOWTO (R_PPC_REL16_HA, /* type */
1433 16, /* rightshift */
1434 1, /* size (0 = byte, 1 = short, 2 = long) */
1435 16, /* bitsize */
1436 TRUE, /* pc_relative */
1437 0, /* bitpos */
1438 complain_overflow_dont, /* complain_on_overflow */
1439 ppc_elf_addr16_ha_reloc, /* special_function */
1440 "R_PPC_REL16_HA", /* name */
1441 FALSE, /* partial_inplace */
1442 0, /* src_mask */
1443 0xffff, /* dst_mask */
1444 TRUE), /* pcrel_offset */
1445
25dbc73a
AM
1446 /* GNU extension to record C++ vtable hierarchy. */
1447 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1448 0, /* rightshift */
1449 0, /* size (0 = byte, 1 = short, 2 = long) */
1450 0, /* bitsize */
1451 FALSE, /* pc_relative */
1452 0, /* bitpos */
1453 complain_overflow_dont, /* complain_on_overflow */
1454 NULL, /* special_function */
1455 "R_PPC_GNU_VTINHERIT", /* name */
1456 FALSE, /* partial_inplace */
1457 0, /* src_mask */
1458 0, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1460
1461 /* GNU extension to record C++ vtable member usage. */
1462 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1463 0, /* rightshift */
1464 0, /* size (0 = byte, 1 = short, 2 = long) */
1465 0, /* bitsize */
1466 FALSE, /* pc_relative */
1467 0, /* bitpos */
1468 complain_overflow_dont, /* complain_on_overflow */
1469 NULL, /* special_function */
1470 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM
1471 FALSE, /* partial_inplace */
1472 0, /* src_mask */
25dbc73a 1473 0, /* dst_mask */
7619e7c7
AM
1474 FALSE), /* pcrel_offset */
1475
25dbc73a
AM
1476 /* Phony reloc to handle AIX style TOC entries. */
1477 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM
1478 0, /* rightshift */
1479 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 16, /* bitsize */
1481 FALSE, /* pc_relative */
1482 0, /* bitpos */
25dbc73a 1483 complain_overflow_signed, /* complain_on_overflow */
7619e7c7 1484 bfd_elf_generic_reloc, /* special_function */
25dbc73a 1485 "R_PPC_TOC16", /* name */
7619e7c7
AM
1486 FALSE, /* partial_inplace */
1487 0, /* src_mask */
1488 0xffff, /* dst_mask */
1489 FALSE), /* pcrel_offset */
25dbc73a
AM
1490};
1491\f
1492/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1493
1494static void
1495ppc_elf_howto_init (void)
1496{
1497 unsigned int i, type;
1498
1499 for (i = 0;
1500 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1501 i++)
1502 {
1503 type = ppc_elf_howto_raw[i].type;
1504 if (type >= (sizeof (ppc_elf_howto_table)
1505 / sizeof (ppc_elf_howto_table[0])))
1506 abort ();
1507 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1508 }
1509}
1510
1511static reloc_howto_type *
1512ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1513 bfd_reloc_code_real_type code)
1514{
1515 enum elf_ppc_reloc_type r;
1516
1517 /* Initialize howto table if not already done. */
1518 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1519 ppc_elf_howto_init ();
1520
1521 switch (code)
1522 {
1523 default:
1524 return NULL;
1525
1526 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1527 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1528 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1529 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1530 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1531 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1532 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1533 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1534 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1535 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1536 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1537 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1538 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1539 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1540 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1541 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1542 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1543 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1544 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1545 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1546 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1547 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1548 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1549 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1550 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1551 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1552 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1553 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1554 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1555 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1556 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1557 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1558 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1559 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1560 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1561 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
727fc41e
AM
1562 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1563 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
25dbc73a
AM
1564 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1565 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1566 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1567 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1568 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1569 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1570 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1571 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1572 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1573 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1574 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1575 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1576 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1577 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1578 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1579 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1580 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1581 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1582 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1583 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1584 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1585 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1586 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1587 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1588 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1589 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1590 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1591 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1592 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1593 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1594 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1595 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1596 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1597 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1598 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1599 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1600 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1601 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1602 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1603 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1604 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1605 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1606 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
d7128ce4
AM
1607 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1608 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1609 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1610 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
25dbc73a
AM
1611 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1612 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1613 }
1614
1615 return ppc_elf_howto_table[r];
1616};
1617
157090f7
AM
1618static reloc_howto_type *
1619ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1620 const char *r_name)
1621{
1622 unsigned int i;
1623
1624 for (i = 0;
1625 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1626 i++)
1627 if (ppc_elf_howto_raw[i].name != NULL
1628 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1629 return &ppc_elf_howto_raw[i];
1630
1631 return NULL;
1632}
1633
25dbc73a
AM
1634/* Set the howto pointer for a PowerPC ELF reloc. */
1635
1636static void
1637ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1638 arelent *cache_ptr,
1639 Elf_Internal_Rela *dst)
1640{
1641 /* Initialize howto table if not already done. */
1642 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1643 ppc_elf_howto_init ();
1644
1645 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1646 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
375de94a
AM
1647
1648 /* Just because the above assert didn't trigger doesn't mean that
1649 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1650 if (!cache_ptr->howto)
1651 {
1652 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1653 abfd, ELF32_R_TYPE (dst->r_info));
1654 bfd_set_error (bfd_error_bad_value);
1655
1656 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1657 }
25dbc73a
AM
1658}
1659
d7128ce4 1660/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM
1661
1662static bfd_reloc_status_type
1663ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1664 arelent *reloc_entry,
1665 asymbol *symbol,
1666 void *data ATTRIBUTE_UNUSED,
1667 asection *input_section,
1668 bfd *output_bfd,
1669 char **error_message ATTRIBUTE_UNUSED)
1670{
1671 bfd_vma relocation;
1672
1673 if (output_bfd != NULL)
1674 {
1675 reloc_entry->address += input_section->output_offset;
1676 return bfd_reloc_ok;
1677 }
1678
1679 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1680 return bfd_reloc_outofrange;
1681
1682 if (bfd_is_com_section (symbol->section))
1683 relocation = 0;
1684 else
1685 relocation = symbol->value;
1686
1687 relocation += symbol->section->output_section->vma;
1688 relocation += symbol->section->output_offset;
1689 relocation += reloc_entry->addend;
d7128ce4
AM
1690 if (reloc_entry->howto->pc_relative)
1691 relocation -= reloc_entry->address;
25dbc73a
AM
1692
1693 reloc_entry->addend += (relocation & 0x8000) << 1;
1694
1695 return bfd_reloc_continue;
1696}
1697
1698static bfd_reloc_status_type
1699ppc_elf_unhandled_reloc (bfd *abfd,
1700 arelent *reloc_entry,
1701 asymbol *symbol,
1702 void *data,
1703 asection *input_section,
1704 bfd *output_bfd,
1705 char **error_message)
1706{
1707 /* If this is a relocatable link (output_bfd test tells us), just
1708 call the generic function. Any adjustment will be done at final
1709 link time. */
1710 if (output_bfd != NULL)
1711 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1712 input_section, output_bfd, error_message);
1713
1714 if (error_message != NULL)
1715 {
1716 static char buf[60];
1717 sprintf (buf, _("generic linker can't handle %s"),
1718 reloc_entry->howto->name);
1719 *error_message = buf;
1720 }
1721 return bfd_reloc_dangerous;
1722}
1723\f
1724/* Sections created by the linker. */
1725
1726typedef struct elf_linker_section
1727{
c9a2f333 1728 /* Pointer to the bfd section. */
25dbc73a 1729 asection *section;
c9a2f333
AM
1730 /* Section name. */
1731 const char *name;
1732 /* Associated bss section name. */
1733 const char *bss_name;
1734 /* Associated symbol name. */
1735 const char *sym_name;
046183de
AM
1736 /* Associated symbol. */
1737 struct elf_link_hash_entry *sym;
25dbc73a
AM
1738} elf_linker_section_t;
1739
1740/* Linked list of allocated pointer entries. This hangs off of the
1741 symbol lists, and provides allows us to return different pointers,
1742 based on different addend's. */
1743
1744typedef struct elf_linker_section_pointers
1745{
1746 /* next allocated pointer for this symbol */
1747 struct elf_linker_section_pointers *next;
1748 /* offset of pointer from beginning of section */
1749 bfd_vma offset;
1750 /* addend used */
1751 bfd_vma addend;
1752 /* which linker section this is */
1753 elf_linker_section_t *lsect;
25dbc73a
AM
1754} elf_linker_section_pointers_t;
1755
1756struct ppc_elf_obj_tdata
1757{
1758 struct elf_obj_tdata elf;
1759
1760 /* A mapping from local symbols to offsets into the various linker
1761 sections added. This is index by the symbol index. */
1762 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM
1763
1764 /* Flags used to auto-detect plt type. */
1765 unsigned int makes_plt_call : 1;
1766 unsigned int has_rel16 : 1;
25dbc73a
AM
1767};
1768
1769#define ppc_elf_tdata(bfd) \
1770 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 1771
25dbc73a
AM
1772#define elf_local_ptr_offsets(bfd) \
1773 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 1774
0c8d6e5c
AM
1775#define is_ppc_elf(bfd) \
1776 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1777 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1778
25dbc73a 1779/* Override the generic function because we store some extras. */
7619e7c7 1780
25dbc73a
AM
1781static bfd_boolean
1782ppc_elf_mkobject (bfd *abfd)
1783{
0ffa91dd
NC
1784 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1785 PPC32_ELF_TDATA);
25dbc73a 1786}
7619e7c7 1787
25dbc73a
AM
1788/* Fix bad default arch selected for a 32 bit input bfd when the
1789 default is 64 bit. */
7619e7c7 1790
25dbc73a
AM
1791static bfd_boolean
1792ppc_elf_object_p (bfd *abfd)
1793{
1794 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1795 {
1796 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 1797
25dbc73a
AM
1798 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1799 {
1800 /* Relies on arch after 64 bit default being 32 bit default. */
1801 abfd->arch_info = abfd->arch_info->next;
1802 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1803 }
1804 }
1805 return TRUE;
1806}
7619e7c7 1807
25dbc73a 1808/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 1809
25dbc73a
AM
1810static bfd_boolean
1811ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1812{
1813 BFD_ASSERT (!elf_flags_init (abfd)
1814 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 1815
25dbc73a
AM
1816 elf_elfheader (abfd)->e_flags = flags;
1817 elf_flags_init (abfd) = TRUE;
1818 return TRUE;
1819}
1820
25dbc73a 1821/* Support for core dump NOTE sections. */
deaaf2f3 1822
b34976b6 1823static bfd_boolean
25dbc73a 1824ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 1825{
25dbc73a
AM
1826 int offset;
1827 unsigned int size;
252b5132 1828
25dbc73a
AM
1829 switch (note->descsz)
1830 {
1831 default:
1832 return FALSE;
252b5132 1833
25dbc73a
AM
1834 case 268: /* Linux/PPC. */
1835 /* pr_cursig */
1836 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 1837
25dbc73a
AM
1838 /* pr_pid */
1839 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 1840
25dbc73a
AM
1841 /* pr_reg */
1842 offset = 72;
1843 size = 192;
deaaf2f3 1844
25dbc73a
AM
1845 break;
1846 }
deaaf2f3 1847
25dbc73a
AM
1848 /* Make a ".reg/999" section. */
1849 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1850 size, note->descpos + offset);
1851}
252b5132 1852
25dbc73a
AM
1853static bfd_boolean
1854ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1855{
1856 switch (note->descsz)
deaaf2f3 1857 {
25dbc73a
AM
1858 default:
1859 return FALSE;
deaaf2f3 1860
25dbc73a
AM
1861 case 128: /* Linux/PPC elf_prpsinfo. */
1862 elf_tdata (abfd)->core_program
1863 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1864 elf_tdata (abfd)->core_command
1865 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1866 }
9abc968f 1867
25dbc73a
AM
1868 /* Note that for some reason, a spurious space is tacked
1869 onto the end of the args in some (at least one anyway)
1870 implementations, so strip it off if it exists. */
70bccea4 1871
25dbc73a
AM
1872 {
1873 char *command = elf_tdata (abfd)->core_command;
1874 int n = strlen (command);
70bccea4 1875
25dbc73a
AM
1876 if (0 < n && command[n - 1] == ' ')
1877 command[n - 1] = '\0';
1878 }
deaaf2f3 1879
25dbc73a
AM
1880 return TRUE;
1881}
deaaf2f3 1882
183e98be
AM
1883static char *
1884ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1885{
1886 switch (note_type)
1887 {
1888 default:
1889 return NULL;
1890
1891 case NT_PRPSINFO:
1892 {
1893 char data[128];
1894 va_list ap;
1895
1896 va_start (ap, note_type);
1897 memset (data, 0, 32);
1898 strncpy (data + 32, va_arg (ap, const char *), 16);
1899 strncpy (data + 48, va_arg (ap, const char *), 80);
1900 va_end (ap);
1901 return elfcore_write_note (abfd, buf, bufsiz,
1902 "CORE", note_type, data, sizeof (data));
1903 }
1904
1905 case NT_PRSTATUS:
1906 {
1907 char data[268];
1908 va_list ap;
1909 long pid;
1910 int cursig;
1911 const void *greg;
1912
1913 va_start (ap, note_type);
1914 memset (data, 0, 72);
1915 pid = va_arg (ap, long);
1916 bfd_put_32 (abfd, pid, data + 24);
1917 cursig = va_arg (ap, int);
1918 bfd_put_16 (abfd, cursig, data + 12);
1919 greg = va_arg (ap, const void *);
1920 memcpy (data + 72, greg, 192);
1921 memset (data + 264, 0, 4);
1922 va_end (ap);
1923 return elfcore_write_note (abfd, buf, bufsiz,
1924 "CORE", note_type, data, sizeof (data));
1925 }
1926 }
1927}
1928
25dbc73a
AM
1929/* Return address for Ith PLT stub in section PLT, for relocation REL
1930 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 1931
25dbc73a
AM
1932static bfd_vma
1933ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1934 const asection *plt ATTRIBUTE_UNUSED,
1935 const arelent *rel)
1936{
1937 return rel->address;
1938}
deaaf2f3 1939
25dbc73a 1940/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
1941 is called when bfd_section_from_shdr finds a section with an unknown
1942 type. */
deaaf2f3 1943
25dbc73a 1944static bfd_boolean
6dc132d9
L
1945ppc_elf_section_from_shdr (bfd *abfd,
1946 Elf_Internal_Shdr *hdr,
1947 const char *name,
1948 int shindex)
25dbc73a
AM
1949{
1950 asection *newsect;
1951 flagword flags;
d1c6de6f 1952
6dc132d9 1953 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 1954 return FALSE;
deaaf2f3 1955
25dbc73a
AM
1956 newsect = hdr->bfd_section;
1957 flags = bfd_get_section_flags (abfd, newsect);
1958 if (hdr->sh_flags & SHF_EXCLUDE)
1959 flags |= SEC_EXCLUDE;
9abc968f 1960
25dbc73a
AM
1961 if (hdr->sh_type == SHT_ORDERED)
1962 flags |= SEC_SORT_ENTRIES;
d1c6de6f 1963
25dbc73a
AM
1964 bfd_set_section_flags (abfd, newsect, flags);
1965 return TRUE;
1966}
1967
1968/* Set up any other section flags and such that may be necessary. */
1969
1970static bfd_boolean
1971ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1972 Elf_Internal_Shdr *shdr,
1973 asection *asect)
1974{
d30e8e7c 1975 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
25dbc73a
AM
1976 shdr->sh_flags |= SHF_EXCLUDE;
1977
1978 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1979 shdr->sh_type = SHT_ORDERED;
1980
1981 return TRUE;
1982}
1983
1984/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1985 need to bump up the number of section headers. */
1986
1987static int
a6b96beb
AM
1988ppc_elf_additional_program_headers (bfd *abfd,
1989 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM
1990{
1991 asection *s;
1992 int ret = 0;
d1c6de6f 1993
25dbc73a
AM
1994 s = bfd_get_section_by_name (abfd, ".sbss2");
1995 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1996 ++ret;
d1c6de6f 1997
25dbc73a
AM
1998 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1999 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2000 ++ret;
deaaf2f3 2001
25dbc73a
AM
2002 return ret;
2003}
deaaf2f3 2004
25dbc73a
AM
2005/* Add extra PPC sections -- Note, for now, make .sbss2 and
2006 .PPC.EMB.sbss0 a normal section, and not a bss section so
2007 that the linker doesn't crater when trying to make more than
2008 2 sections. */
e656e369 2009
b35d266b 2010static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 2011{
0112cd26
NC
2012 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2013 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2014 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2015 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2016 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2017 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2018 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2019 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2020 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2021 { NULL, 0, 0, 0, 0 }
7f4d3958
L
2022};
2023
551b43fd
AM
2024/* This is what we want for new plt/got. */
2025static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 2026 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM
2027
2028static const struct bfd_elf_special_section *
2029ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 2030{
b35d266b 2031 const struct bfd_elf_special_section *ssect;
551b43fd
AM
2032
2033 /* See if this is one of the special sections. */
2034 if (sec->name == NULL)
2035 return NULL;
2036
2037 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2038 sec->use_rela_p);
2039 if (ssect != NULL)
2040 {
2041 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2042 ssect = &ppc_alt_plt;
2043 return ssect;
2044 }
2045
2046 return _bfd_elf_get_sec_type_attr (abfd, sec);
2047}
25dbc73a
AM
2048\f
2049/* Very simple linked list structure for recording apuinfo values. */
2050typedef struct apuinfo_list
2051{
2052 struct apuinfo_list *next;
2053 unsigned long value;
2054}
2055apuinfo_list;
e656e369 2056
25dbc73a 2057static apuinfo_list *head;
deaaf2f3 2058
deaaf2f3 2059
25dbc73a
AM
2060static void
2061apuinfo_list_init (void)
2062{
2063 head = NULL;
2064}
9abc968f 2065
25dbc73a
AM
2066static void
2067apuinfo_list_add (unsigned long value)
2068{
2069 apuinfo_list *entry = head;
deaaf2f3 2070
25dbc73a
AM
2071 while (entry != NULL)
2072 {
2073 if (entry->value == value)
2074 return;
2075 entry = entry->next;
2076 }
b4a38de6 2077
25dbc73a
AM
2078 entry = bfd_malloc (sizeof (* entry));
2079 if (entry == NULL)
2080 return;
e656e369 2081
25dbc73a
AM
2082 entry->value = value;
2083 entry->next = head;
2084 head = entry;
2085}
9abc968f 2086
25dbc73a
AM
2087static unsigned
2088apuinfo_list_length (void)
2089{
2090 apuinfo_list *entry;
2091 unsigned long count;
9abc968f 2092
25dbc73a
AM
2093 for (entry = head, count = 0;
2094 entry;
2095 entry = entry->next)
2096 ++ count;
e656e369 2097
25dbc73a
AM
2098 return count;
2099}
eea6121a 2100
25dbc73a
AM
2101static inline unsigned long
2102apuinfo_list_element (unsigned long number)
2103{
2104 apuinfo_list * entry;
e656e369 2105
25dbc73a
AM
2106 for (entry = head;
2107 entry && number --;
2108 entry = entry->next)
2109 ;
252b5132 2110
25dbc73a
AM
2111 return entry ? entry->value : 0;
2112}
2113
2114static void
2115apuinfo_list_finish (void)
2116{
2117 apuinfo_list *entry;
2118
2119 for (entry = head; entry;)
252b5132 2120 {
25dbc73a
AM
2121 apuinfo_list *next = entry->next;
2122 free (entry);
2123 entry = next;
2124 }
9abc968f 2125
25dbc73a
AM
2126 head = NULL;
2127}
9abc968f 2128
25dbc73a
AM
2129#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2130#define APUINFO_LABEL "APUinfo"
9abc968f 2131
25dbc73a
AM
2132/* Scan the input BFDs and create a linked list of
2133 the APUinfo values that will need to be emitted. */
9abc968f 2134
25dbc73a
AM
2135static void
2136ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2137{
2138 bfd *ibfd;
2139 asection *asec;
2140 char *buffer;
2141 unsigned num_input_sections;
2142 bfd_size_type output_section_size;
2143 unsigned i;
2144 unsigned num_entries;
2145 unsigned long offset;
2146 unsigned long length;
2147 const char *error_message = NULL;
9abc968f 2148
25dbc73a
AM
2149 if (link_info == NULL)
2150 return;
9abc968f 2151
25dbc73a
AM
2152 /* Scan the input bfds, looking for apuinfo sections. */
2153 num_input_sections = 0;
2154 output_section_size = 0;
252b5132 2155
25dbc73a 2156 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2157 {
25dbc73a
AM
2158 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2159 if (asec)
252b5132 2160 {
25dbc73a
AM
2161 ++ num_input_sections;
2162 output_section_size += asec->size;
252b5132 2163 }
252b5132
RH
2164 }
2165
25dbc73a
AM
2166 /* We need at least one input sections
2167 in order to make merging worthwhile. */
2168 if (num_input_sections < 1)
2169 return;
deaaf2f3 2170
25dbc73a
AM
2171 /* Just make sure that the output section exists as well. */
2172 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2173 if (asec == NULL)
2174 return;
252b5132 2175
25dbc73a
AM
2176 /* Allocate a buffer for the contents of the input sections. */
2177 buffer = bfd_malloc (output_section_size);
2178 if (buffer == NULL)
2179 return;
252b5132 2180
25dbc73a
AM
2181 offset = 0;
2182 apuinfo_list_init ();
252b5132 2183
25dbc73a
AM
2184 /* Read in the input sections contents. */
2185 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2186 {
25dbc73a
AM
2187 unsigned long datum;
2188 char *ptr;
252b5132 2189
25dbc73a
AM
2190 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2191 if (asec == NULL)
2192 continue;
252b5132 2193
25dbc73a
AM
2194 length = asec->size;
2195 if (length < 24)
2196 {
2197 error_message = _("corrupt or empty %s section in %B");
2198 goto fail;
2199 }
252b5132 2200
25dbc73a
AM
2201 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2202 || (bfd_bread (buffer + offset, length, ibfd) != length))
2203 {
2204 error_message = _("unable to read in %s section from %B");
2205 goto fail;
2206 }
252b5132 2207
25dbc73a
AM
2208 /* Process the contents of the section. */
2209 ptr = buffer + offset;
2210 error_message = _("corrupt %s section in %B");
252b5132 2211
25dbc73a
AM
2212 /* Verify the contents of the header. Note - we have to
2213 extract the values this way in order to allow for a
2214 host whose endian-ness is different from the target. */
2215 datum = bfd_get_32 (ibfd, ptr);
2216 if (datum != sizeof APUINFO_LABEL)
2217 goto fail;
252b5132 2218
25dbc73a
AM
2219 datum = bfd_get_32 (ibfd, ptr + 8);
2220 if (datum != 0x2)
2221 goto fail;
252b5132 2222
25dbc73a
AM
2223 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2224 goto fail;
252b5132 2225
25dbc73a
AM
2226 /* Get the number of bytes used for apuinfo entries. */
2227 datum = bfd_get_32 (ibfd, ptr + 4);
2228 if (datum + 20 != length)
2229 goto fail;
2230
2231 /* Make sure that we do not run off the end of the section. */
2232 if (offset + length > output_section_size)
2233 goto fail;
2234
2235 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2236 for (i = 0; i < datum; i += 4)
2237 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2238
2239 /* Update the offset. */
2240 offset += length;
252b5132
RH
2241 }
2242
25dbc73a 2243 error_message = NULL;
252b5132 2244
25dbc73a
AM
2245 /* Compute the size of the output section. */
2246 num_entries = apuinfo_list_length ();
2247 output_section_size = 20 + num_entries * 4;
252b5132 2248
25dbc73a
AM
2249 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2250
2251 if (! bfd_set_section_size (abfd, asec, output_section_size))
2252 ibfd = abfd,
2253 error_message = _("warning: unable to set size of %s section in %B");
2254
2255 fail:
2256 free (buffer);
2257
2258 if (error_message)
2259 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2260}
252b5132 2261
25dbc73a
AM
2262/* Prevent the output section from accumulating the input sections'
2263 contents. We have already stored this in our linked list structure. */
252b5132 2264
25dbc73a
AM
2265static bfd_boolean
2266ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2267 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM
2268 asection *asec,
2269 bfd_byte *contents ATTRIBUTE_UNUSED)
2270{
2271 return (apuinfo_list_length ()
2272 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
252b5132
RH
2273}
2274
25dbc73a
AM
2275/* Finally we can generate the output section. */
2276
2277static void
2278ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2279{
25dbc73a
AM
2280 bfd_byte *buffer;
2281 asection *asec;
2282 unsigned i;
2283 unsigned num_entries;
2284 bfd_size_type length;
7619e7c7 2285
25dbc73a
AM
2286 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2287 if (asec == NULL)
2288 return;
2289
2290 if (apuinfo_list_length () == 0)
2291 return;
2292
2293 length = asec->size;
2294 if (length < 20)
2295 return;
2296
2297 buffer = bfd_malloc (length);
2298 if (buffer == NULL)
7619e7c7 2299 {
25dbc73a
AM
2300 (*_bfd_error_handler)
2301 (_("failed to allocate space for new APUinfo section."));
2302 return;
7619e7c7 2303 }
7619e7c7 2304
25dbc73a
AM
2305 /* Create the apuinfo header. */
2306 num_entries = apuinfo_list_length ();
2307 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2308 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2309 bfd_put_32 (abfd, 0x2, buffer + 8);
2310 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2311
25dbc73a
AM
2312 length = 20;
2313 for (i = 0; i < num_entries; i++)
feee612b 2314 {
25dbc73a
AM
2315 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2316 length += 4;
feee612b 2317 }
feee612b 2318
25dbc73a
AM
2319 if (length != asec->size)
2320 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2321
25dbc73a
AM
2322 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2323 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2324
25dbc73a
AM
2325 free (buffer);
2326
2327 apuinfo_list_finish ();
252b5132 2328}
25dbc73a 2329\f
7382d32a 2330static bfd_boolean
c6dd29ce 2331is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
7382d32a 2332{
c6dd29ce 2333 bfd_byte buf[GLINK_ENTRY_SIZE];
7382d32a 2334
c6dd29ce 2335 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
7382d32a
AM
2336 return FALSE;
2337
c6dd29ce
AM
2338 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2339 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2340 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2341 && bfd_get_32 (abfd, buf + 12) == BCTR);
7382d32a
AM
2342}
2343
468392fb
AM
2344static bfd_boolean
2345section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2346{
2347 bfd_vma vma = *(bfd_vma *) ptr;
2348 return ((section->flags & SEC_ALLOC) != 0
2349 && section->vma <= vma
2350 && vma < section->vma + section->size);
2351}
2352
2353static long
2354ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2355 long dynsymcount, asymbol **dynsyms,
2356 asymbol **ret)
2357{
2358 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2359 asection *plt, *relplt, *dynamic, *glink;
2360 bfd_vma glink_vma = 0;
2361 bfd_vma resolv_vma = 0;
2362 bfd_vma stub_vma;
2363 asymbol *s;
2364 arelent *p;
2365 long count, i;
2366 size_t size;
2367 char *names;
2368 bfd_byte buf[4];
2369
2370 *ret = NULL;
2371
2372 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2373 return 0;
2374
2375 if (dynsymcount <= 0)
2376 return 0;
2377
2378 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2379 if (relplt == NULL)
2380 return 0;
2381
2382 plt = bfd_get_section_by_name (abfd, ".plt");
2383 if (plt == NULL)
2384 return 0;
2385
2386 /* Call common code to handle old-style executable PLTs. */
2387 if (elf_section_flags (plt) & SHF_EXECINSTR)
2388 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2389 dynsymcount, dynsyms, ret);
2390
2391 /* If this object was prelinked, the prelinker stored the address
2392 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2393 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2394 if (dynamic != NULL)
2395 {
2396 bfd_byte *dynbuf, *extdyn, *extdynend;
2397 size_t extdynsize;
2398 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2399
2400 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2401 return -1;
2402
2403 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2404 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2405
2406 extdyn = dynbuf;
2407 extdynend = extdyn + dynamic->size;
2408 for (; extdyn < extdynend; extdyn += extdynsize)
2409 {
2410 Elf_Internal_Dyn dyn;
2411 (*swap_dyn_in) (abfd, extdyn, &dyn);
2412
2413 if (dyn.d_tag == DT_NULL)
2414 break;
2415
2416 if (dyn.d_tag == DT_PPC_GOT)
2417 {
2418 unsigned int g_o_t = dyn.d_un.d_val;
2419 asection *got = bfd_get_section_by_name (abfd, ".got");
2420 if (got != NULL
2421 && bfd_get_section_contents (abfd, got, buf,
2422 g_o_t - got->vma + 4, 4))
2423 glink_vma = bfd_get_32 (abfd, buf);
2424 break;
2425 }
2426 }
2427 free (dynbuf);
2428 }
2429
2430 /* Otherwise we read the first plt entry. */
2431 if (glink_vma == 0)
2432 {
2433 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2434 glink_vma = bfd_get_32 (abfd, buf);
2435 }
2436
2437 if (glink_vma == 0)
2438 return 0;
2439
2440 /* The .glink section usually does not survive the final
2441 link; search for the section (usually .text) where the
2442 glink stubs now reside. */
2443 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2444 if (glink == NULL)
2445 return 0;
2446
2447 /* Determine glink PLT resolver by reading the relative branch
2448 from the first glink stub. */
2449 if (bfd_get_section_contents (abfd, glink, buf,
2450 glink_vma - glink->vma, 4))
2451 {
2452 unsigned int insn = bfd_get_32 (abfd, buf);
2453
2454 /* The first glink stub may either branch to the resolver ... */
2455 insn ^= B;
2456 if ((insn & ~0x3fffffc) == 0)
2457 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2458
2459 /* ... or fall through a bunch of NOPs. */
2460 else if ((insn ^ B ^ NOP) == 0)
2461 for (i = 4;
2462 bfd_get_section_contents (abfd, glink, buf,
2463 glink_vma - glink->vma + i, 4);
2464 i += 4)
2465 if (bfd_get_32 (abfd, buf) != NOP)
2466 {
2467 resolv_vma = glink_vma + i;
2468 break;
2469 }
2470 }
2471
7382d32a
AM
2472 count = relplt->size / sizeof (Elf32_External_Rela);
2473 stub_vma = glink_vma - (bfd_vma) count * 16;
2474 /* If the stubs are those for -shared/-pie then we might have
2475 multiple stubs for each plt entry. If that is the case then
2476 there is no way to associate stubs with their plt entries short
2477 of figuring out the GOT pointer value used in the stub. */
c6dd29ce
AM
2478 if (!is_nonpic_glink_stub (abfd, glink,
2479 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
7382d32a
AM
2480 return 0;
2481
468392fb
AM
2482 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2483 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2484 return -1;
2485
468392fb
AM
2486 size = count * sizeof (asymbol);
2487 p = relplt->relocation;
2488 for (i = 0; i < count; i++, p++)
2489 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2490
2491 size += sizeof (asymbol) + sizeof ("__glink");
2492
2493 if (resolv_vma)
2494 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2495
2496 s = *ret = bfd_malloc (size);
2497 if (s == NULL)
2498 return -1;
2499
2500 names = (char *) (s + count + 1 + (resolv_vma != 0));
2501 p = relplt->relocation;
2502 for (i = 0; i < count; i++, p++)
2503 {
2504 size_t len;
2505
2506 *s = **p->sym_ptr_ptr;
2507 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2508 we are defining a symbol, ensure one of them is set. */
2509 if ((s->flags & BSF_LOCAL) == 0)
2510 s->flags |= BSF_GLOBAL;
6ba2a415 2511 s->flags |= BSF_SYNTHETIC;
468392fb
AM
2512 s->section = glink;
2513 s->value = stub_vma - glink->vma;
2514 s->name = names;
2515 s->udata.p = NULL;
2516 len = strlen ((*p->sym_ptr_ptr)->name);
2517 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2518 names += len;
2519 memcpy (names, "@plt", sizeof ("@plt"));
2520 names += sizeof ("@plt");
2521 ++s;
2522 stub_vma += 16;
2523 }
2524
2525 /* Add a symbol at the start of the glink branch table. */
86a4952b 2526 memset (s, 0, sizeof *s);
468392fb 2527 s->the_bfd = abfd;
6ba2a415 2528 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
2529 s->section = glink;
2530 s->value = glink_vma - glink->vma;
2531 s->name = names;
2532 memcpy (names, "__glink", sizeof ("__glink"));
2533 names += sizeof ("__glink");
2534 s++;
2535 count++;
2536
2537 if (resolv_vma)
2538 {
2539 /* Add a symbol for the glink PLT resolver. */
86a4952b 2540 memset (s, 0, sizeof *s);
468392fb 2541 s->the_bfd = abfd;
6ba2a415 2542 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
2543 s->section = glink;
2544 s->value = resolv_vma - glink->vma;
2545 s->name = names;
2546 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2547 names += sizeof ("__glink_PLTresolve");
2548 s++;
2549 count++;
2550 }
2551
2552 return count;
2553}
2554\f
25dbc73a
AM
2555/* The following functions are specific to the ELF linker, while
2556 functions above are used generally. They appear in this file more
2557 or less in the order in which they are called. eg.
2558 ppc_elf_check_relocs is called early in the link process,
2559 ppc_elf_finish_dynamic_sections is one of the last functions
2560 called. */
252b5132 2561
25dbc73a
AM
2562/* The PPC linker needs to keep track of the number of relocs that it
2563 decides to copy as dynamic relocs in check_relocs for each symbol.
2564 This is so that it can later discard them if they are found to be
2565 unnecessary. We store the information in a field extending the
2566 regular ELF linker hash table. */
ae9a127f 2567
25dbc73a 2568struct ppc_elf_dyn_relocs
252b5132 2569{
25dbc73a 2570 struct ppc_elf_dyn_relocs *next;
252b5132 2571
25dbc73a
AM
2572 /* The input section of the reloc. */
2573 asection *sec;
252b5132 2574
25dbc73a
AM
2575 /* Total number of relocs copied for the input section. */
2576 bfd_size_type count;
252b5132 2577
25dbc73a
AM
2578 /* Number of pc-relative relocs copied for the input section. */
2579 bfd_size_type pc_count;
2580};
252b5132 2581
a6aa5195
AM
2582/* Track PLT entries needed for a given symbol. We might need more
2583 than one glink entry per symbol. */
2584struct plt_entry
2585{
2586 struct plt_entry *next;
2587
2588 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2589 This field stores the offset into .got2 used to initialise the
2590 GOT pointer reg. It will always be at least 32768 (and for
2591 current gcc this is the only offset used). */
2592 bfd_vma addend;
2593
2594 /* The .got2 section. */
2595 asection *sec;
2596
2597 /* PLT refcount or offset. */
2598 union
2599 {
2600 bfd_signed_vma refcount;
2601 bfd_vma offset;
2602 } plt;
2603
2604 /* .glink stub offset. */
2605 bfd_vma glink_offset;
2606};
2607
1d483afe 2608/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM
2609 selects those that must be copied when linking a shared library,
2610 even when the symbol is local. */
252b5132 2611
1d483afe
AM
2612static int
2613must_be_dyn_reloc (struct bfd_link_info *info,
2614 enum elf_ppc_reloc_type r_type)
2615{
2616 switch (r_type)
2617 {
2618 default:
2619 return 1;
2620
2621 case R_PPC_REL24:
2622 case R_PPC_REL14:
2623 case R_PPC_REL14_BRTAKEN:
2624 case R_PPC_REL14_BRNTAKEN:
2625 case R_PPC_REL32:
2626 return 0;
2627
2628 case R_PPC_TPREL32:
2629 case R_PPC_TPREL16:
2630 case R_PPC_TPREL16_LO:
2631 case R_PPC_TPREL16_HI:
2632 case R_PPC_TPREL16_HA:
2633 return !info->executable;
2634 }
2635}
252b5132 2636
25dbc73a
AM
2637/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2638 copying dynamic variables from a shared lib into an app's dynbss
2639 section, and instead use a dynamic relocation to point into the
2640 shared lib. */
2641#define ELIMINATE_COPY_RELOCS 1
252b5132 2642
25dbc73a 2643/* PPC ELF linker hash entry. */
252b5132 2644
25dbc73a
AM
2645struct ppc_elf_link_hash_entry
2646{
2647 struct elf_link_hash_entry elf;
252b5132 2648
25dbc73a
AM
2649 /* If this symbol is used in the linker created sections, the processor
2650 specific backend uses this field to map the field into the offset
2651 from the beginning of the section. */
2652 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 2653
25dbc73a
AM
2654 /* Track dynamic relocs copied for this symbol. */
2655 struct ppc_elf_dyn_relocs *dyn_relocs;
252b5132 2656
25dbc73a
AM
2657 /* Contexts in which symbol is used in the GOT (or TOC).
2658 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2659 corresponding relocs are encountered during check_relocs.
2660 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2661 indicate the corresponding GOT entry type is not needed. */
2662#define TLS_GD 1 /* GD reloc. */
2663#define TLS_LD 2 /* LD reloc. */
2664#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2665#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2666#define TLS_TLS 16 /* Any TLS reloc. */
2667#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2668 char tls_mask;
4dc4a9a5
DJ
2669
2670 /* Nonzero if we have seen a small data relocation referring to this
2671 symbol. */
2672 unsigned char has_sda_refs;
25dbc73a 2673};
252b5132 2674
25dbc73a
AM
2675#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2676
2677/* PPC ELF linker hash table. */
2678
2679struct ppc_elf_link_hash_table
2680{
2681 struct elf_link_hash_table elf;
2682
2683 /* Short-cuts to get to dynamic linker sections. */
2684 asection *got;
2685 asection *relgot;
d7128ce4 2686 asection *glink;
25dbc73a
AM
2687 asection *plt;
2688 asection *relplt;
2689 asection *dynbss;
2690 asection *relbss;
2691 asection *dynsbss;
2692 asection *relsbss;
c9a2f333 2693 elf_linker_section_t sdata[2];
25dbc73a
AM
2694 asection *sbss;
2695
016687f8
AM
2696 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2697 asection *srelplt2;
2698
2699 /* The .got.plt section (VxWorks only)*/
2700 asection *sgotplt;
2701
1d483afe 2702 /* Shortcut to __tls_get_addr. */
25dbc73a 2703 struct elf_link_hash_entry *tls_get_addr;
252b5132 2704
016687f8
AM
2705 /* The bfd that forced an old-style PLT. */
2706 bfd *old_bfd;
2707
25dbc73a
AM
2708 /* TLS local dynamic got entry handling. */
2709 union {
2710 bfd_signed_vma refcount;
2711 bfd_vma offset;
2712 } tlsld_got;
252b5132 2713
c6dd29ce 2714 /* Offset of branch table to PltResolve function in glink. */
d7128ce4
AM
2715 bfd_vma glink_pltresolve;
2716
3b36f7e6
AM
2717 /* Size of reserved GOT entries. */
2718 unsigned int got_header_size;
2719 /* Non-zero if allocating the header left a gap. */
2720 unsigned int got_gap;
2721
4a3dc543
RS
2722 /* The type of PLT we have chosen to use. */
2723 enum ppc_elf_plt_type plt_type;
2724
0ba07910
AM
2725 /* Set if we should emit symbols for stubs. */
2726 unsigned int emit_stub_syms:1;
2727
9d8504b1 2728 /* True if the target system is VxWorks. */
016687f8 2729 unsigned int is_vxworks:1;
9d8504b1
PB
2730
2731 /* The size of PLT entries. */
2732 int plt_entry_size;
2733 /* The distance between adjacent PLT slots. */
2734 int plt_slot_size;
2735 /* The size of the first PLT entry. */
2736 int plt_initial_entry_size;
016687f8
AM
2737
2738 /* Small local sym to section mapping cache. */
2739 struct sym_sec_cache sym_sec;
25dbc73a 2740};
252b5132 2741
25dbc73a 2742/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 2743
25dbc73a
AM
2744#define ppc_elf_hash_table(p) \
2745 ((struct ppc_elf_link_hash_table *) (p)->hash)
252b5132 2746
25dbc73a 2747/* Create an entry in a PPC ELF linker hash table. */
252b5132 2748
25dbc73a
AM
2749static struct bfd_hash_entry *
2750ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2751 struct bfd_hash_table *table,
2752 const char *string)
252b5132 2753{
25dbc73a
AM
2754 /* Allocate the structure if it has not already been allocated by a
2755 subclass. */
2756 if (entry == NULL)
2757 {
2758 entry = bfd_hash_allocate (table,
2759 sizeof (struct ppc_elf_link_hash_entry));
2760 if (entry == NULL)
2761 return entry;
2762 }
252b5132 2763
25dbc73a
AM
2764 /* Call the allocation method of the superclass. */
2765 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2766 if (entry != NULL)
2767 {
2768 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2769 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2770 ppc_elf_hash_entry (entry)->tls_mask = 0;
2771 }
252b5132 2772
25dbc73a 2773 return entry;
252b5132 2774}
3dab13f6 2775
25dbc73a 2776/* Create a PPC ELF linker hash table. */
3dab13f6 2777
25dbc73a
AM
2778static struct bfd_link_hash_table *
2779ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 2780{
25dbc73a 2781 struct ppc_elf_link_hash_table *ret;
3dab13f6 2782
25dbc73a
AM
2783 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2784 if (ret == NULL)
2785 return NULL;
3dab13f6 2786
66eb6687
AM
2787 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2788 ppc_elf_link_hash_newfunc,
2789 sizeof (struct ppc_elf_link_hash_entry)))
3dab13f6 2790 {
25dbc73a
AM
2791 free (ret);
2792 return NULL;
2793 }
58111eb7 2794
a6aa5195
AM
2795 ret->elf.init_plt_refcount.refcount = 0;
2796 ret->elf.init_plt_refcount.glist = NULL;
2797 ret->elf.init_plt_offset.offset = 0;
2798 ret->elf.init_plt_offset.glist = NULL;
2799
c9a2f333
AM
2800 ret->sdata[0].name = ".sdata";
2801 ret->sdata[0].sym_name = "_SDA_BASE_";
2802 ret->sdata[0].bss_name = ".sbss";
2803
2804 ret->sdata[1].name = ".sdata2";
2805 ret->sdata[1].sym_name = "_SDA2_BASE_";
2806 ret->sdata[1].bss_name = ".sbss2";
2807
9d8504b1
PB
2808 ret->plt_entry_size = 12;
2809 ret->plt_slot_size = 8;
2810 ret->plt_initial_entry_size = 72;
9d8504b1 2811
25dbc73a
AM
2812 return &ret->elf.root;
2813}
3dab13f6 2814
9d8504b1 2815/* Create .got and the related sections. */
3dab13f6 2816
25dbc73a
AM
2817static bfd_boolean
2818ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2819{
2820 struct ppc_elf_link_hash_table *htab;
2821 asection *s;
2822 flagword flags;
3dab13f6 2823
25dbc73a
AM
2824 if (!_bfd_elf_create_got_section (abfd, info))
2825 return FALSE;
3dab13f6 2826
25dbc73a
AM
2827 htab = ppc_elf_hash_table (info);
2828 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2829 if (s == NULL)
2830 abort ();
3dab13f6 2831
9d8504b1
PB
2832 if (htab->is_vxworks)
2833 {
2834 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2835 if (!htab->sgotplt)
2836 abort ();
2837 }
2838 else
2839 {
2840 /* The powerpc .got has a blrl instruction in it. Mark it
2841 executable. */
2842 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2843 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2844 if (!bfd_set_section_flags (abfd, s, flags))
2845 return FALSE;
2846 }
3dab13f6 2847
3b36f7e6
AM
2848 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2849 | SEC_LINKER_CREATED | SEC_READONLY);
2850 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
25dbc73a 2851 if (!htab->relgot
25dbc73a
AM
2852 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2853 return FALSE;
3dab13f6 2854
25dbc73a
AM
2855 return TRUE;
2856}
3dab13f6 2857
25dbc73a
AM
2858/* We have to create .dynsbss and .rela.sbss here so that they get mapped
2859 to output sections (just like _bfd_elf_create_dynamic_sections has
2860 to create .dynbss and .rela.bss). */
3dab13f6 2861
25dbc73a
AM
2862static bfd_boolean
2863ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2864{
2865 struct ppc_elf_link_hash_table *htab;
2866 asection *s;
2867 flagword flags;
3dab13f6 2868
25dbc73a 2869 htab = ppc_elf_hash_table (info);
3dab13f6 2870
25dbc73a
AM
2871 if (htab->got == NULL
2872 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
2873 return FALSE;
2874
25dbc73a
AM
2875 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2876 return FALSE;
3dab13f6 2877
d7128ce4
AM
2878 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2879 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2880
2881 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2882 htab->glink = s;
2883 if (s == NULL
2884 || !bfd_set_section_alignment (abfd, s, 4))
2885 return FALSE;
3dab13f6 2886
25dbc73a 2887 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
3b36f7e6
AM
2888 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2889 SEC_ALLOC | SEC_LINKER_CREATED);
2890 htab->dynsbss = s;
3496cb2a 2891 if (s == NULL)
25dbc73a 2892 return FALSE;
3dab13f6 2893
25dbc73a
AM
2894 if (! info->shared)
2895 {
2896 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
d7128ce4 2897 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 2898 htab->relsbss = s;
25dbc73a 2899 if (s == NULL
25dbc73a
AM
2900 || ! bfd_set_section_alignment (abfd, s, 2))
2901 return FALSE;
2902 }
3dab13f6 2903
711de32c
RS
2904 if (htab->is_vxworks
2905 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2906 return FALSE;
9d8504b1 2907
25dbc73a
AM
2908 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2909 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2910 if (s == NULL)
2911 abort ();
3dab13f6 2912
3b36f7e6 2913 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
2914 if (htab->plt_type == PLT_VXWORKS)
2915 /* The VxWorks PLT is a loaded section with contents. */
2916 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
2917 return bfd_set_section_flags (abfd, s, flags);
2918}
3dab13f6 2919
25dbc73a 2920/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 2921
25dbc73a 2922static void
fcfa13d2 2923ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
2924 struct elf_link_hash_entry *dir,
2925 struct elf_link_hash_entry *ind)
2926{
2927 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 2928
25dbc73a
AM
2929 edir = (struct ppc_elf_link_hash_entry *) dir;
2930 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 2931
25dbc73a
AM
2932 if (eind->dyn_relocs != NULL)
2933 {
2934 if (edir->dyn_relocs != NULL)
3dab13f6 2935 {
25dbc73a
AM
2936 struct ppc_elf_dyn_relocs **pp;
2937 struct ppc_elf_dyn_relocs *p;
3dab13f6 2938
fcfa13d2 2939 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
2940 list. Merge any entries against the same section. */
2941 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 2942 {
25dbc73a
AM
2943 struct ppc_elf_dyn_relocs *q;
2944
2945 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2946 if (q->sec == p->sec)
2947 {
2948 q->pc_count += p->pc_count;
2949 q->count += p->count;
2950 *pp = p->next;
2951 break;
2952 }
2953 if (q == NULL)
2954 pp = &p->next;
3dab13f6 2955 }
25dbc73a 2956 *pp = edir->dyn_relocs;
3dab13f6 2957 }
25dbc73a
AM
2958
2959 edir->dyn_relocs = eind->dyn_relocs;
2960 eind->dyn_relocs = NULL;
3dab13f6 2961 }
3dab13f6 2962
25dbc73a 2963 edir->tls_mask |= eind->tls_mask;
4dc4a9a5 2964 edir->has_sda_refs |= eind->has_sda_refs;
3dab13f6 2965
a6aa5195
AM
2966 /* If called to transfer flags for a weakdef during processing
2967 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2968 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2969 if (!(ELIMINATE_COPY_RELOCS
2970 && eind->elf.root.type != bfd_link_hash_indirect
2971 && edir->elf.dynamic_adjusted))
2972 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2973
2974 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2975 edir->elf.ref_regular |= eind->elf.ref_regular;
2976 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2977 edir->elf.needs_plt |= eind->elf.needs_plt;
0eb4a168 2978 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
a6aa5195
AM
2979
2980 /* If we were called to copy over info for a weak sym, that's all. */
2981 if (eind->elf.root.type != bfd_link_hash_indirect)
2982 return;
2983
2984 /* Copy over the GOT refcount entries that we may have already seen to
2985 the symbol which just became indirect. */
fcfa13d2
AM
2986 edir->elf.got.refcount += eind->elf.got.refcount;
2987 eind->elf.got.refcount = 0;
a6aa5195
AM
2988
2989 /* And plt entries. */
2990 if (eind->elf.plt.plist != NULL)
2991 {
2992 if (edir->elf.plt.plist != NULL)
2993 {
2994 struct plt_entry **entp;
2995 struct plt_entry *ent;
2996
2997 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2998 {
2999 struct plt_entry *dent;
3000
3001 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3002 if (dent->sec == ent->sec && dent->addend == ent->addend)
3003 {
3004 dent->plt.refcount += ent->plt.refcount;
3005 *entp = ent->next;
3006 break;
3007 }
3008 if (dent == NULL)
3009 entp = &ent->next;
3010 }
3011 *entp = edir->elf.plt.plist;
3012 }
3013
3014 edir->elf.plt.plist = eind->elf.plt.plist;
3015 eind->elf.plt.plist = NULL;
3016 }
3017
fcfa13d2 3018 if (eind->elf.dynindx != -1)
25dbc73a 3019 {
fcfa13d2
AM
3020 if (edir->elf.dynindx != -1)
3021 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3022 edir->elf.dynstr_index);
a6aa5195
AM
3023 edir->elf.dynindx = eind->elf.dynindx;
3024 edir->elf.dynstr_index = eind->elf.dynstr_index;
3025 eind->elf.dynindx = -1;
3026 eind->elf.dynstr_index = 0;
25dbc73a 3027 }
25dbc73a 3028}
3dab13f6 3029
25dbc73a
AM
3030/* Hook called by the linker routine which adds symbols from an object
3031 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3032
25dbc73a
AM
3033static bfd_boolean
3034ppc_elf_add_symbol_hook (bfd *abfd,
3035 struct bfd_link_info *info,
3036 Elf_Internal_Sym *sym,
3037 const char **namep ATTRIBUTE_UNUSED,
3038 flagword *flagsp ATTRIBUTE_UNUSED,
3039 asection **secp,
3040 bfd_vma *valp)
3041{
3042 if (sym->st_shndx == SHN_COMMON
3043 && !info->relocatable
0c8d6e5c
AM
3044 && is_ppc_elf (info->output_bfd)
3045 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
3046 {
3047 /* Common symbols less than or equal to -G nn bytes are automatically
3048 put into .sbss. */
3049 struct ppc_elf_link_hash_table *htab;
3dab13f6 3050
25dbc73a
AM
3051 htab = ppc_elf_hash_table (info);
3052 if (htab->sbss == NULL)
3053 {
644285ef 3054 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3055
644285ef
AM
3056 if (!htab->elf.dynobj)
3057 htab->elf.dynobj = abfd;
3058
3496cb2a
L
3059 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3060 ".sbss",
3061 flags);
3062 if (htab->sbss == NULL)
25dbc73a 3063 return FALSE;
3dab13f6 3064 }
3dab13f6 3065
25dbc73a
AM
3066 *secp = htab->sbss;
3067 *valp = sym->st_size;
3068 }
3dab13f6 3069
25dbc73a 3070 return TRUE;
3dab13f6
AM
3071}
3072\f
046183de
AM
3073static bfd_boolean
3074create_sdata_sym (struct ppc_elf_link_hash_table *htab,
3075 elf_linker_section_t *lsect)
3076{
3077 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3078 TRUE, FALSE, TRUE);
3079 if (lsect->sym == NULL)
3080 return FALSE;
3081 if (lsect->sym->root.type == bfd_link_hash_new)
3082 lsect->sym->non_elf = 0;
3083 lsect->sym->ref_regular = 1;
3084 return TRUE;
3085}
3086
c9a2f333 3087/* Create a special linker section. */
25dbc73a 3088
c9a2f333 3089static bfd_boolean
55fd94b0
AM
3090ppc_elf_create_linker_section (bfd *abfd,
3091 struct bfd_link_info *info,
c9a2f333
AM
3092 flagword flags,
3093 elf_linker_section_t *lsect)
252b5132 3094{
58111eb7 3095 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 3096 asection *s;
58111eb7 3097
c9a2f333
AM
3098 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3099 | SEC_LINKER_CREATED);
58111eb7
AM
3100
3101 /* Record the first bfd that needs the special sections. */
3102 if (!htab->elf.dynobj)
3103 htab->elf.dynobj = abfd;
3104
3496cb2a
L
3105 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3106 lsect->name,
3107 flags);
76750a2f 3108 if (s == NULL
76750a2f 3109 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 3110 return FALSE;
76750a2f 3111 lsect->section = s;
58111eb7 3112
046183de 3113 return create_sdata_sym (htab, lsect);
252b5132 3114}
252b5132 3115
25dbc73a
AM
3116/* Find a linker generated pointer with a given addend and type. */
3117
3118static elf_linker_section_pointers_t *
3119elf_find_pointer_linker_section
3120 (elf_linker_section_pointers_t *linker_pointers,
3121 bfd_vma addend,
3122 elf_linker_section_t *lsect)
252b5132 3123{
25dbc73a
AM
3124 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3125 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3126 return linker_pointers;
252b5132 3127
25dbc73a
AM
3128 return NULL;
3129}
3130
3131/* Allocate a pointer to live in a linker created section. */
3132
3133static bfd_boolean
3134elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM
3135 elf_linker_section_t *lsect,
3136 struct elf_link_hash_entry *h,
3137 const Elf_Internal_Rela *rel)
3138{
3139 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3140 elf_linker_section_pointers_t *linker_section_ptr;
3141 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3142 bfd_size_type amt;
3143
3144 BFD_ASSERT (lsect != NULL);
3145
3146 /* Is this a global symbol? */
3147 if (h != NULL)
3148 {
3149 struct ppc_elf_link_hash_entry *eh;
3150
3151 /* Has this symbol already been allocated? If so, our work is done. */
3152 eh = (struct ppc_elf_link_hash_entry *) h;
3153 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3154 rel->r_addend,
3155 lsect))
3156 return TRUE;
3157
3158 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3159 }
3160 else
3161 {
0c8d6e5c 3162 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3163
25dbc73a
AM
3164 /* Allocation of a pointer to a local symbol. */
3165 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3166
3167 /* Allocate a table to hold the local symbols if first time. */
3168 if (!ptr)
3169 {
0ffa91dd 3170 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3171
3172 amt = num_symbols;
3173 amt *= sizeof (elf_linker_section_pointers_t *);
3174 ptr = bfd_zalloc (abfd, amt);
3175
3176 if (!ptr)
3177 return FALSE;
3178
3179 elf_local_ptr_offsets (abfd) = ptr;
3180 }
3181
3182 /* Has this symbol already been allocated? If so, our work is done. */
3183 if (elf_find_pointer_linker_section (ptr[r_symndx],
3184 rel->r_addend,
3185 lsect))
3186 return TRUE;
252b5132 3187
25dbc73a 3188 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3189 }
41fcb14e 3190
25dbc73a
AM
3191 /* Allocate space for a pointer in the linker section, and allocate
3192 a new pointer record from internal memory. */
3193 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3194 amt = sizeof (elf_linker_section_pointers_t);
3195 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3196
25dbc73a 3197 if (!linker_section_ptr)
7619e7c7 3198 return FALSE;
41fcb14e 3199
25dbc73a
AM
3200 linker_section_ptr->next = *ptr_linker_section_ptr;
3201 linker_section_ptr->addend = rel->r_addend;
3202 linker_section_ptr->lsect = lsect;
25dbc73a 3203 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3204
25dbc73a
AM
3205 linker_section_ptr->offset = lsect->section->size;
3206 lsect->section->size += 4;
7619e7c7 3207
25dbc73a
AM
3208#ifdef DEBUG
3209 fprintf (stderr,
3210 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3211 lsect->name, (long) linker_section_ptr->offset,
3212 (long) lsect->section->size);
3213#endif
7619e7c7
AM
3214
3215 return TRUE;
41fcb14e
AM
3216}
3217
b34976b6 3218static bfd_boolean
25dbc73a
AM
3219update_local_sym_info (bfd *abfd,
3220 Elf_Internal_Shdr *symtab_hdr,
3221 unsigned long r_symndx,
3222 int tls_type)
252b5132 3223{
25dbc73a
AM
3224 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3225 char *local_got_tls_masks;
252b5132 3226
25dbc73a 3227 if (local_got_refcounts == NULL)
252b5132 3228 {
25dbc73a
AM
3229 bfd_size_type size = symtab_hdr->sh_info;
3230
3231 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
3232 local_got_refcounts = bfd_zalloc (abfd, size);
3233 if (local_got_refcounts == NULL)
b34976b6 3234 return FALSE;
25dbc73a 3235 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3236 }
41fcb14e 3237
25dbc73a
AM
3238 local_got_refcounts[r_symndx] += 1;
3239 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
3240 local_got_tls_masks[r_symndx] |= tls_type;
3241 return TRUE;
3242}
41fcb14e 3243
a6aa5195
AM
3244static bfd_boolean
3245update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
3246 asection *sec, bfd_vma addend)
3247{
3248 struct plt_entry *ent;
3249
3250 if (addend < 32768)
3251 sec = NULL;
3252 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3253 if (ent->sec == sec && ent->addend == addend)
3254 break;
3255 if (ent == NULL)
3256 {
3257 bfd_size_type amt = sizeof (*ent);
3258 ent = bfd_alloc (abfd, amt);
3259 if (ent == NULL)
3260 return FALSE;
3261 ent->next = h->plt.plist;
3262 ent->sec = sec;
3263 ent->addend = addend;
3264 ent->plt.refcount = 0;
3265 h->plt.plist = ent;
3266 }
3267 ent->plt.refcount += 1;
3268 return TRUE;
3269}
3270
3271static struct plt_entry *
3272find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
3273{
3274 struct plt_entry *ent;
3275
3276 if (addend < 32768)
3277 sec = NULL;
3278 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3279 if (ent->sec == sec && ent->addend == addend)
3280 break;
3281 return ent;
3282}
3283
25dbc73a
AM
3284static void
3285bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3286{
3287 (*_bfd_error_handler)
3288 (_("%B: relocation %s cannot be used when making a shared object"),
3289 abfd,
3290 ppc_elf_howto_table[r_type]->name);
3291 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3292}
3293
25dbc73a
AM
3294/* Look through the relocs for a section during the first phase, and
3295 allocate space in the global offset table or procedure linkage
3296 table. */
252b5132 3297
b34976b6 3298static bfd_boolean
25dbc73a
AM
3299ppc_elf_check_relocs (bfd *abfd,
3300 struct bfd_link_info *info,
3301 asection *sec,
3302 const Elf_Internal_Rela *relocs)
252b5132 3303{
7619e7c7 3304 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3305 Elf_Internal_Shdr *symtab_hdr;
3306 struct elf_link_hash_entry **sym_hashes;
3307 const Elf_Internal_Rela *rel;
3308 const Elf_Internal_Rela *rel_end;
a6aa5195 3309 asection *got2, *sreloc;
727fc41e 3310 struct elf_link_hash_entry *tga;
25dbc73a
AM
3311
3312 if (info->relocatable)
3313 return TRUE;
252b5132 3314
c87b5a93
AM
3315 /* Don't do anything special with non-loaded, non-alloced sections.
3316 In particular, any relocs in such sections should not affect GOT
3317 and PLT reference counting (ie. we don't allow them to create GOT
3318 or PLT entries), there's no possibility or desire to optimize TLS
3319 relocs, and there's not much point in propagating relocs to shared
3320 libs that the dynamic linker won't relocate. */
3321 if ((sec->flags & SEC_ALLOC) == 0)
3322 return TRUE;
3323
252b5132 3324#ifdef DEBUG
25dbc73a
AM
3325 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3326 sec, abfd);
252b5132
RH
3327#endif
3328
0c8d6e5c 3329 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3330
25dbc73a
AM
3331 /* Initialize howto table if not already done. */
3332 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3333 ppc_elf_howto_init ();
3334
7619e7c7 3335 htab = ppc_elf_hash_table (info);
727fc41e
AM
3336 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3337 FALSE, FALSE, TRUE);
0ffa91dd 3338 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 3339 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3340 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
3341 sreloc = NULL;
3342
3343 rel_end = relocs + sec->reloc_count;
3344 for (rel = relocs; rel < rel_end; rel++)
3345 {
3346 unsigned long r_symndx;
3347 enum elf_ppc_reloc_type r_type;
3348 struct elf_link_hash_entry *h;
727fc41e 3349 int tls_type;
25dbc73a
AM
3350
3351 r_symndx = ELF32_R_SYM (rel->r_info);
3352 if (r_symndx < symtab_hdr->sh_info)
3353 h = NULL;
3354 else
973a3492
L
3355 {
3356 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3357 while (h->root.type == bfd_link_hash_indirect
3358 || h->root.type == bfd_link_hash_warning)
3359 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3360 }
25dbc73a
AM
3361
3362 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3363 This shows up in particular in an R_PPC_ADDR32 in the eabi
3364 startup code. */
3b36f7e6
AM
3365 if (h != NULL
3366 && htab->got == NULL
3367 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3368 {
3b36f7e6
AM
3369 if (htab->elf.dynobj == NULL)
3370 htab->elf.dynobj = abfd;
3371 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3372 return FALSE;
3373 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3374 }
252b5132 3375
727fc41e 3376 tls_type = 0;
25dbc73a 3377 r_type = ELF32_R_TYPE (rel->r_info);
727fc41e
AM
3378 if (h != NULL && h == tga)
3379 switch (r_type)
3380 {
3381 default:
3382 break;
3383
3384 case R_PPC_PLTREL24:
3385 case R_PPC_LOCAL24PC:
3386 case R_PPC_REL24:
3387 case R_PPC_REL14:
3388 case R_PPC_REL14_BRTAKEN:
3389 case R_PPC_REL14_BRNTAKEN:
3390 case R_PPC_ADDR24:
3391 case R_PPC_ADDR14:
3392 case R_PPC_ADDR14_BRTAKEN:
3393 case R_PPC_ADDR14_BRNTAKEN:
3394 if (rel != relocs
3395 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3396 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3397 /* We have a new-style __tls_get_addr call with a marker
3398 reloc. */
3399 ;
3400 else
3401 /* Mark this section as having an old-style call. */
3402 sec->has_tls_get_addr_call = 1;
3403 break;
3404 }
3405
25dbc73a
AM
3406 switch (r_type)
3407 {
727fc41e
AM
3408 case R_PPC_TLSGD:
3409 case R_PPC_TLSLD:
3410 /* These special tls relocs tie a call to __tls_get_addr with
3411 its parameter symbol. */
3412 break;
3413
25dbc73a
AM
3414 case R_PPC_GOT_TLSLD16:
3415 case R_PPC_GOT_TLSLD16_LO:
3416 case R_PPC_GOT_TLSLD16_HI:
3417 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
3418 tls_type = TLS_TLS | TLS_LD;
3419 goto dogottls;
252b5132 3420
25dbc73a
AM
3421 case R_PPC_GOT_TLSGD16:
3422 case R_PPC_GOT_TLSGD16_LO:
3423 case R_PPC_GOT_TLSGD16_HI:
3424 case R_PPC_GOT_TLSGD16_HA:
3425 tls_type = TLS_TLS | TLS_GD;
3426 goto dogottls;
3427
3428 case R_PPC_GOT_TPREL16:
3429 case R_PPC_GOT_TPREL16_LO:
3430 case R_PPC_GOT_TPREL16_HI:
3431 case R_PPC_GOT_TPREL16_HA:
1d483afe 3432 if (!info->executable)
25dbc73a
AM
3433 info->flags |= DF_STATIC_TLS;
3434 tls_type = TLS_TLS | TLS_TPREL;
3435 goto dogottls;
3436
3437 case R_PPC_GOT_DTPREL16:
3438 case R_PPC_GOT_DTPREL16_LO:
3439 case R_PPC_GOT_DTPREL16_HI:
3440 case R_PPC_GOT_DTPREL16_HA:
3441 tls_type = TLS_TLS | TLS_DTPREL;
3442 dogottls:
3443 sec->has_tls_reloc = 1;
3444 /* Fall thru */
252b5132 3445
25dbc73a
AM
3446 /* GOT16 relocations */
3447 case R_PPC_GOT16:
3448 case R_PPC_GOT16_LO:
3449 case R_PPC_GOT16_HI:
3450 case R_PPC_GOT16_HA:
3451 /* This symbol requires a global offset table entry. */
3452 if (htab->got == NULL)
3453 {
3454 if (htab->elf.dynobj == NULL)
3455 htab->elf.dynobj = abfd;
3456 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3457 return FALSE;
3458 }
3459 if (h != NULL)
3460 {
3461 h->got.refcount += 1;
3462 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3463 }
3464 else
3465 /* This is a global offset table entry for a local symbol. */
3466 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3467 return FALSE;
3468 break;
252b5132 3469
25dbc73a
AM
3470 /* Indirect .sdata relocation. */
3471 case R_PPC_EMB_SDAI16:
3472 if (info->shared)
3473 {
3474 bad_shared_reloc (abfd, r_type);
3475 return FALSE;
3476 }
c9a2f333
AM
3477 if (htab->sdata[0].section == NULL
3478 && !ppc_elf_create_linker_section (abfd, info, 0,
3479 &htab->sdata[0]))
3480 return FALSE;
76750a2f
AM
3481 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3482 h, rel))
25dbc73a 3483 return FALSE;
046183de
AM
3484 if (h != NULL)
3485 {
3486 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3487 h->non_got_ref = TRUE;
3488 }
25dbc73a 3489 break;
252b5132 3490
25dbc73a
AM
3491 /* Indirect .sdata2 relocation. */
3492 case R_PPC_EMB_SDA2I16:
3493 if (info->shared)
3494 {
3495 bad_shared_reloc (abfd, r_type);
3496 return FALSE;
3497 }
c9a2f333
AM
3498 if (htab->sdata[1].section == NULL
3499 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3500 &htab->sdata[1]))
3501 return FALSE;
76750a2f
AM
3502 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3503 h, rel))
25dbc73a 3504 return FALSE;
046183de
AM
3505 if (h != NULL)
3506 {
3507 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3508 h->non_got_ref = TRUE;
3509 }
25dbc73a 3510 break;
252b5132 3511
25dbc73a 3512 case R_PPC_SDAREL16:
046183de
AM
3513 if (info->shared)
3514 {
3515 bad_shared_reloc (abfd, r_type);
3516 return FALSE;
3517 }
3518 if (htab->sdata[0].sym == NULL
3519 && !create_sdata_sym (htab, &htab->sdata[0]))
3520 return FALSE;
3521 if (h != NULL)
3522 {
3523 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3524 h->non_got_ref = TRUE;
3525 }
3526 break;
3527
25dbc73a 3528 case R_PPC_EMB_SDA2REL:
046183de
AM
3529 if (info->shared)
3530 {
3531 bad_shared_reloc (abfd, r_type);
3532 return FALSE;
3533 }
3534 if (htab->sdata[1].sym == NULL
3535 && !create_sdata_sym (htab, &htab->sdata[1]))
3536 return FALSE;
3537 if (h != NULL)
3538 {
3539 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3540 h->non_got_ref = TRUE;
3541 }
3542 break;
3543
25dbc73a
AM
3544 case R_PPC_EMB_SDA21:
3545 case R_PPC_EMB_RELSDA:
046183de
AM
3546 if (info->shared)
3547 {
3548 bad_shared_reloc (abfd, r_type);
3549 return FALSE;
3550 }
3551 if (htab->sdata[0].sym == NULL
3552 && !create_sdata_sym (htab, &htab->sdata[0]))
3553 return FALSE;
3554 if (htab->sdata[1].sym == NULL
3555 && !create_sdata_sym (htab, &htab->sdata[1]))
3556 return FALSE;
3557 if (h != NULL)
3558 {
3559 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3560 h->non_got_ref = TRUE;
3561 }
3562 break;
3563
25dbc73a
AM
3564 case R_PPC_EMB_NADDR32:
3565 case R_PPC_EMB_NADDR16:
3566 case R_PPC_EMB_NADDR16_LO:
3567 case R_PPC_EMB_NADDR16_HI:
3568 case R_PPC_EMB_NADDR16_HA:
3569 if (info->shared)
3570 {
3571 bad_shared_reloc (abfd, r_type);
3572 return FALSE;
3573 }
4dc4a9a5 3574 if (h != NULL)
046183de 3575 h->non_got_ref = TRUE;
25dbc73a 3576 break;
252b5132 3577
25dbc73a
AM
3578 case R_PPC_PLT32:
3579 case R_PPC_PLTREL24:
3580 case R_PPC_PLTREL32:
3581 case R_PPC_PLT16_LO:
3582 case R_PPC_PLT16_HI:
3583 case R_PPC_PLT16_HA:
3584#ifdef DEBUG
3585 fprintf (stderr, "Reloc requires a PLT entry\n");
3586#endif
3587 /* This symbol requires a procedure linkage table entry. We
3588 actually build the entry in finish_dynamic_symbol,
3589 because this might be a case of linking PIC code without
3590 linking in any dynamic objects, in which case we don't
3591 need to generate a procedure linkage table after all. */
7619e7c7 3592
25dbc73a
AM
3593 if (h == NULL)
3594 {
3595 /* It does not make sense to have a procedure linkage
3596 table entry for a local symbol. */
3597 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3598 "local symbol"),
3599 abfd,
3600 sec,
3601 (long) rel->r_offset,
3602 ppc_elf_howto_table[r_type]->name);
3603 bfd_set_error (bfd_error_bad_value);
3604 return FALSE;
3605 }
a6aa5195
AM
3606 else
3607 {
016687f8 3608 bfd_vma addend = 0;
ee05f2fe 3609
016687f8
AM
3610 if (r_type == R_PPC_PLTREL24)
3611 {
3612 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3613 addend = rel->r_addend;
3614 }
a6aa5195
AM
3615 h->needs_plt = 1;
3616 if (!update_plt_info (abfd, h, got2, addend))
3617 return FALSE;
3618 }
25dbc73a 3619 break;
ee05f2fe 3620
25dbc73a
AM
3621 /* The following relocations don't need to propagate the
3622 relocation if linking a shared object since they are
3623 section relative. */
3624 case R_PPC_SECTOFF:
3625 case R_PPC_SECTOFF_LO:
3626 case R_PPC_SECTOFF_HI:
3627 case R_PPC_SECTOFF_HA:
3628 case R_PPC_DTPREL16:
3629 case R_PPC_DTPREL16_LO:
3630 case R_PPC_DTPREL16_HI:
3631 case R_PPC_DTPREL16_HA:
3632 case R_PPC_TOC16:
3633 break;
252b5132 3634
d7128ce4
AM
3635 case R_PPC_REL16:
3636 case R_PPC_REL16_LO:
3637 case R_PPC_REL16_HI:
3638 case R_PPC_REL16_HA:
016687f8 3639 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
3640 break;
3641
a6aa5195 3642 /* These are just markers. */
25dbc73a
AM
3643 case R_PPC_TLS:
3644 case R_PPC_EMB_MRKREF:
3645 case R_PPC_NONE:
3646 case R_PPC_max:
3647 break;
252b5132 3648
25dbc73a
AM
3649 /* These should only appear in dynamic objects. */
3650 case R_PPC_COPY:
3651 case R_PPC_GLOB_DAT:
3652 case R_PPC_JMP_SLOT:
3653 case R_PPC_RELATIVE:
3654 break;
252b5132 3655
25dbc73a
AM
3656 /* These aren't handled yet. We'll report an error later. */
3657 case R_PPC_ADDR30:
3658 case R_PPC_EMB_RELSEC16:
3659 case R_PPC_EMB_RELST_LO:
3660 case R_PPC_EMB_RELST_HI:
3661 case R_PPC_EMB_RELST_HA:
3662 case R_PPC_EMB_BIT_FLD:
3663 break;
252b5132 3664
25dbc73a
AM
3665 /* This refers only to functions defined in the shared library. */
3666 case R_PPC_LOCAL24PC:
727fc41e 3667 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
3668 {
3669 htab->plt_type = PLT_OLD;
3670 htab->old_bfd = abfd;
3671 }
25dbc73a 3672 break;
252b5132 3673
25dbc73a
AM
3674 /* This relocation describes the C++ object vtable hierarchy.
3675 Reconstruct it for later use during GC. */
3676 case R_PPC_GNU_VTINHERIT:
3677 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3678 return FALSE;
3679 break;
252b5132 3680
25dbc73a
AM
3681 /* This relocation describes which C++ vtable entries are actually
3682 used. Record for later use during GC. */
3683 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
3684 BFD_ASSERT (h != NULL);
3685 if (h != NULL
3686 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
3687 return FALSE;
3688 break;
252b5132 3689
25dbc73a
AM
3690 /* We shouldn't really be seeing these. */
3691 case R_PPC_TPREL32:
1d483afe
AM
3692 case R_PPC_TPREL16:
3693 case R_PPC_TPREL16_LO:
3694 case R_PPC_TPREL16_HI:
3695 case R_PPC_TPREL16_HA:
3696 if (!info->executable)
25dbc73a
AM
3697 info->flags |= DF_STATIC_TLS;
3698 goto dodyn;
252b5132 3699
25dbc73a
AM
3700 /* Nor these. */
3701 case R_PPC_DTPMOD32:
3702 case R_PPC_DTPREL32:
3703 goto dodyn;
252b5132 3704
9edfd1af
AM
3705 case R_PPC_REL32:
3706 if (h == NULL
3707 && got2 != NULL
3708 && (sec->flags & SEC_CODE) != 0
3709 && (info->shared || info->pie)
4a3dc543 3710 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
3711 {
3712 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3713 the start of a function, which assembles to a REL32
3714 reference to .got2. If we detect one of these, then
3715 force the old PLT layout because the linker cannot
3716 reliably deduce the GOT pointer value needed for
3717 PLT call stubs. */
3718 asection *s;
3719
3720 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3721 r_symndx);
3722 if (s == got2)
016687f8
AM
3723 {
3724 htab->plt_type = PLT_OLD;
3725 htab->old_bfd = abfd;
3726 }
9edfd1af 3727 }
7123df0e 3728 if (h == NULL || h == htab->elf.hgot)
fd38b44c 3729 break;
625af618
AM
3730 /* fall through */
3731
3732 case R_PPC_ADDR32:
3733 case R_PPC_ADDR16:
3734 case R_PPC_ADDR16_LO:
3735 case R_PPC_ADDR16_HI:
3736 case R_PPC_ADDR16_HA:
3737 case R_PPC_UADDR32:
3738 case R_PPC_UADDR16:
3739 if (h != NULL && !info->shared)
3740 {
3741 /* We may need a plt entry if the symbol turns out to be
3742 a function defined in a dynamic object. */
3743 if (!update_plt_info (abfd, h, NULL, 0))
3744 return FALSE;
3745
3746 /* We may need a copy reloc too. */
3747 h->non_got_ref = 1;
3748 h->pointer_equality_needed = 1;
3749 }
3750 goto dodyn;
9edfd1af 3751
25dbc73a
AM
3752 case R_PPC_REL24:
3753 case R_PPC_REL14:
3754 case R_PPC_REL14_BRTAKEN:
3755 case R_PPC_REL14_BRNTAKEN:
d7128ce4 3756 if (h == NULL)
25dbc73a 3757 break;
7123df0e 3758 if (h == htab->elf.hgot)
d7128ce4 3759 {
7123df0e 3760 if (htab->plt_type == PLT_UNSET)
016687f8
AM
3761 {
3762 htab->plt_type = PLT_OLD;
3763 htab->old_bfd = abfd;
3764 }
d7128ce4
AM
3765 break;
3766 }
25dbc73a 3767 /* fall through */
ee05f2fe 3768
25dbc73a 3769 case R_PPC_ADDR24:
25dbc73a
AM
3770 case R_PPC_ADDR14:
3771 case R_PPC_ADDR14_BRTAKEN:
3772 case R_PPC_ADDR14_BRNTAKEN:
25dbc73a
AM
3773 if (h != NULL && !info->shared)
3774 {
3775 /* We may need a plt entry if the symbol turns out to be
3776 a function defined in a dynamic object. */
a6aa5195
AM
3777 if (!update_plt_info (abfd, h, NULL, 0))
3778 return FALSE;
625af618 3779 break;
25dbc73a 3780 }
7619e7c7 3781
25dbc73a
AM
3782 dodyn:
3783 /* If we are creating a shared library, and this is a reloc
3784 against a global symbol, or a non PC relative reloc
3785 against a local symbol, then we need to copy the reloc
3786 into the shared library. However, if we are linking with
3787 -Bsymbolic, we do not need to copy a reloc against a
3788 global symbol which is defined in an object we are
3789 including in the link (i.e., DEF_REGULAR is set). At
3790 this point we have not seen all the input files, so it is
3791 possible that DEF_REGULAR is not set now but will be set
3792 later (it is never cleared). In case of a weak definition,
3793 DEF_REGULAR may be cleared later by a strong definition in
3794 a shared library. We account for that possibility below by
3795 storing information in the dyn_relocs field of the hash
3796 table entry. A similar situation occurs when creating
3797 shared libraries and symbol visibility changes render the
3798 symbol local.
7619e7c7 3799
25dbc73a
AM
3800 If on the other hand, we are creating an executable, we
3801 may need to keep relocations for symbols satisfied by a
3802 dynamic library if we manage to avoid copy relocs for the
3803 symbol. */
3804 if ((info->shared
1d483afe 3805 && (must_be_dyn_reloc (info, r_type)
25dbc73a
AM
3806 || (h != NULL
3807 && (! info->symbolic
3808 || h->root.type == bfd_link_hash_defweak
3809 || !h->def_regular))))
3810 || (ELIMINATE_COPY_RELOCS
3811 && !info->shared
25dbc73a
AM
3812 && h != NULL
3813 && (h->root.type == bfd_link_hash_defweak
3814 || !h->def_regular)))
3815 {
3816 struct ppc_elf_dyn_relocs *p;
3817 struct ppc_elf_dyn_relocs **head;
7619e7c7 3818
25dbc73a
AM
3819#ifdef DEBUG
3820 fprintf (stderr,
3821 "ppc_elf_check_relocs needs to "
3822 "create relocation for %s\n",
3823 (h && h->root.root.string
3824 ? h->root.root.string : "<unknown>"));
3825#endif
3826 if (sreloc == NULL)
3827 {
c9a2f333
AM
3828 if (htab->elf.dynobj == NULL)
3829 htab->elf.dynobj = abfd;
83bac4b0
NC
3830
3831 sreloc = _bfd_elf_make_dynamic_reloc_section
3832 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3833
25dbc73a 3834 if (sreloc == NULL)
83bac4b0 3835 return FALSE;
25dbc73a 3836 }
7619e7c7 3837
25dbc73a
AM
3838 /* If this is a global symbol, we count the number of
3839 relocations we need for this symbol. */
3840 if (h != NULL)
3841 {
3842 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3843 }
3844 else
3845 {
3846 /* Track dynamic relocs needed for local syms too.
3847 We really need local syms available to do this
3848 easily. Oh well. */
7619e7c7 3849
25dbc73a 3850 asection *s;
6edfbbad
DJ
3851 void *vpp;
3852
25dbc73a
AM
3853 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3854 sec, r_symndx);
3855 if (s == NULL)
3856 return FALSE;
7fce784e 3857
6edfbbad
DJ
3858 vpp = &elf_section_data (s)->local_dynrel;
3859 head = (struct ppc_elf_dyn_relocs **) vpp;
25dbc73a 3860 }
7fce784e 3861
25dbc73a
AM
3862 p = *head;
3863 if (p == NULL || p->sec != sec)
3864 {
3865 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3866 if (p == NULL)
3867 return FALSE;
3868 p->next = *head;
3869 *head = p;
3870 p->sec = sec;
3871 p->count = 0;
3872 p->pc_count = 0;
3873 }
3874
3875 p->count += 1;
1d483afe 3876 if (!must_be_dyn_reloc (info, r_type))
25dbc73a 3877 p->pc_count += 1;
7619e7c7 3878 }
25dbc73a
AM
3879
3880 break;
7619e7c7
AM
3881 }
3882 }
ee05f2fe 3883
25dbc73a
AM
3884 return TRUE;
3885}
3886\f
34c8bcba
JM
3887
3888/* Merge object attributes from IBFD into OBFD. Raise an error if
3889 there are conflicting attributes. */
3890static bfd_boolean
3891ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
3892{
c6e65352
DJ
3893 obj_attribute *in_attr, *in_attrs;
3894 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM
3895
3896 if (!elf_known_obj_attributes_proc (obfd)[0].i)
3897 {
3898 /* This is the first object. Copy the attributes. */
3899 _bfd_elf_copy_obj_attributes (ibfd, obfd);
3900
3901 /* Use the Tag_null value to indicate the attributes have been
3902 initialized. */
3903 elf_known_obj_attributes_proc (obfd)[0].i = 1;
3904
3905 return TRUE;
3906 }
3907
c6e65352
DJ
3908 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3909 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3910
34c8bcba
JM
3911 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3912 non-conflicting ones. */
c6e65352
DJ
3913 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
3914 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
3915 if (in_attr->i != out_attr->i)
34c8bcba 3916 {
c6e65352
DJ
3917 out_attr->type = 1;
3918 if (out_attr->i == 0)
3919 out_attr->i = in_attr->i;
3920 else if (in_attr->i == 0)
34c8bcba 3921 ;
c6e65352 3922 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM
3923 _bfd_error_handler
3924 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3c7b9897
AM
3925 else if (out_attr->i == 1 && in_attr->i == 3)
3926 _bfd_error_handler
3927 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3928 obfd, ibfd);
3929 else if (out_attr->i == 3 && in_attr->i == 1)
3930 _bfd_error_handler
3931 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3932 ibfd, obfd);
3933 else if (out_attr->i == 3 && in_attr->i == 2)
3934 _bfd_error_handler
3935 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3936 ibfd, obfd);
3937 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
34c8bcba
JM
3938 _bfd_error_handler
3939 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3c7b9897 3940 else if (in_attr->i > 3)
34c8bcba
JM
3941 _bfd_error_handler
3942 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 3943 in_attr->i);
34c8bcba
JM
3944 else
3945 _bfd_error_handler
3946 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ
3947 out_attr->i);
3948 }
3949
3950 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3951 merge non-conflicting ones. */
3952 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
3953 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
3954 if (in_attr->i != out_attr->i)
3955 {
3956 const char *in_abi = NULL, *out_abi = NULL;
3957
3958 switch (in_attr->i)
3959 {
3960 case 1: in_abi = "generic"; break;
3961 case 2: in_abi = "AltiVec"; break;
3962 case 3: in_abi = "SPE"; break;
3963 }
3964
3965 switch (out_attr->i)
3966 {
3967 case 1: out_abi = "generic"; break;
3968 case 2: out_abi = "AltiVec"; break;
3969 case 3: out_abi = "SPE"; break;
3970 }
3971
3972 out_attr->type = 1;
3973 if (out_attr->i == 0)
3974 out_attr->i = in_attr->i;
3975 else if (in_attr->i == 0)
3976 ;
3977 /* For now, allow generic to transition to AltiVec or SPE
3978 without a warning. If GCC marked files with their stack
3979 alignment and used don't-care markings for files which are
3980 not affected by the vector ABI, we could warn about this
3981 case too. */
3982 else if (out_attr->i == 1)
3983 out_attr->i = in_attr->i;
3984 else if (in_attr->i == 1)
3985 ;
3986 else if (in_abi == NULL)
3987 _bfd_error_handler
3988 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
3989 in_attr->i);
3990 else if (out_abi == NULL)
3991 _bfd_error_handler
3992 (_("Warning: %B uses unknown vector ABI %d"), obfd,
3993 in_attr->i);
3994 else
3995 _bfd_error_handler
3996 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
3997 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM
3998 }
3999
f82e0623
NF
4000 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4001 and merge non-conflicting ones. */
4002 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4003 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4004 if (in_attr->i != out_attr->i)
4005 {
4006 out_attr->type = 1;
4007 if (out_attr->i == 0)
4008 out_attr->i = in_attr->i;
4009 else if (in_attr->i == 0)
4010 ;
4011 else if (out_attr->i == 1 && in_attr->i == 2)
4012 _bfd_error_handler
4013 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4014 else if (out_attr->i == 2 && in_attr->i == 1)
4015 _bfd_error_handler
4016 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4017 else if (in_attr->i > 2)
4018 _bfd_error_handler
4019 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4020 in_attr->i);
4021 else
4022 _bfd_error_handler
4023 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4024 out_attr->i);
4025 }
4026
34c8bcba
JM
4027 /* Merge Tag_compatibility attributes and any common GNU ones. */
4028 _bfd_elf_merge_object_attributes (ibfd, obfd);
4029
4030 return TRUE;
4031}
4032
8853c3d3
AM
4033/* Merge backend specific data from an object file to the output
4034 object file when linking. */
4035
4036static bfd_boolean
4037ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4038{
4039 flagword old_flags;
4040 flagword new_flags;
4041 bfd_boolean error;
4042
0c8d6e5c 4043 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4044 return TRUE;
4045
4046 /* Check if we have the same endianess. */
4047 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4048 return FALSE;
4049
34c8bcba
JM
4050 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4051 return FALSE;
4052
8853c3d3
AM
4053 new_flags = elf_elfheader (ibfd)->e_flags;
4054 old_flags = elf_elfheader (obfd)->e_flags;
4055 if (!elf_flags_init (obfd))
4056 {
4057 /* First call, no flags set. */
4058 elf_flags_init (obfd) = TRUE;
4059 elf_elfheader (obfd)->e_flags = new_flags;
4060 }
4061
4062 /* Compatible flags are ok. */
4063 else if (new_flags == old_flags)
4064 ;
4065
4066 /* Incompatible flags. */
4067 else
4068 {
4069 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4070 to be linked with either. */
4071 error = FALSE;
4072 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4073 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4074 {
4075 error = TRUE;
4076 (*_bfd_error_handler)
4077 (_("%B: compiled with -mrelocatable and linked with "
4078 "modules compiled normally"), ibfd);
4079 }
4080 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4081 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4082 {
4083 error = TRUE;
4084 (*_bfd_error_handler)
4085 (_("%B: compiled normally and linked with "
4086 "modules compiled with -mrelocatable"), ibfd);
4087 }
4088
4089 /* The output is -mrelocatable-lib iff both the input files are. */
4090 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4091 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4092
4093 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4094 but each input file is either -mrelocatable or -mrelocatable-lib. */
4095 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4096 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4097 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4098 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4099
4100 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4101 any module uses it. */
4102 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4103
4104 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4105 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4106
4107 /* Warn about any other mismatches. */
4108 if (new_flags != old_flags)
4109 {
4110 error = TRUE;
4111 (*_bfd_error_handler)
4112 (_("%B: uses different e_flags (0x%lx) fields "
4113 "than previous modules (0x%lx)"),
4114 ibfd, (long) new_flags, (long) old_flags);
4115 }
4116
4117 if (error)
4118 {
4119 bfd_set_error (bfd_error_bad_value);
4120 return FALSE;
4121 }
4122 }
4123
4124 return TRUE;
4125}
4126\f
d7128ce4
AM
4127/* Choose which PLT scheme to use, and set .plt flags appropriately.
4128 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4129int
4130ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4131 struct bfd_link_info *info,
016687f8 4132 enum ppc_elf_plt_type plt_style,
0ba07910 4133 int emit_stub_syms)
d7128ce4
AM
4134{
4135 struct ppc_elf_link_hash_table *htab;
9d8504b1 4136 flagword flags;
d7128ce4
AM
4137
4138 htab = ppc_elf_hash_table (info);
4a3dc543
RS
4139
4140 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4141 {
4142 if (plt_style == PLT_OLD)
4143 htab->plt_type = PLT_OLD;
4144 else
4145 {
4146 bfd *ibfd;
4147 enum ppc_elf_plt_type plt_type = plt_style;
4148
4149 /* Look through the reloc flags left by ppc_elf_check_relocs.
4150 Use the old style bss plt if a file makes plt calls
4151 without using the new relocs, and if ld isn't given
4152 --secure-plt and we never see REL16 relocs. */
4153 if (plt_type == PLT_UNSET)
4154 plt_type = PLT_OLD;
60b31e8d 4155 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
0c8d6e5c 4156 if (is_ppc_elf (ibfd))
016687f8
AM
4157 {
4158 if (ppc_elf_tdata (ibfd)->has_rel16)
4159 plt_type = PLT_NEW;
4160 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4161 {
4162 plt_type = PLT_OLD;
4163 htab->old_bfd = ibfd;
4164 break;
4165 }
4166 }
4167 htab->plt_type = plt_type;
4168 }
4169 }
4170 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4171 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
d7128ce4 4172
0ba07910
AM
4173 htab->emit_stub_syms = emit_stub_syms;
4174
4a3dc543 4175 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4176
4a3dc543 4177 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
4178 {
4179 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4180 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
4181
4182 /* The new PLT is a loaded section. */
4183 if (htab->plt != NULL
4184 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4185 return -1;
4186
4187 /* The new GOT is not executable. */
4188 if (htab->got != NULL
4189 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4190 return -1;
d7128ce4
AM
4191 }
4192 else
4193 {
4194 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
4195 if (htab->glink != NULL
4196 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4197 return -1;
d7128ce4 4198 }
4a3dc543 4199 return htab->plt_type == PLT_NEW;
d7128ce4
AM
4200}
4201\f
25dbc73a
AM
4202/* Return the section that should be marked against GC for a given
4203 relocation. */
586119b3 4204
25dbc73a
AM
4205static asection *
4206ppc_elf_gc_mark_hook (asection *sec,
07adf181 4207 struct bfd_link_info *info,
25dbc73a
AM
4208 Elf_Internal_Rela *rel,
4209 struct elf_link_hash_entry *h,
4210 Elf_Internal_Sym *sym)
4211{
4212 if (h != NULL)
07adf181
AM
4213 switch (ELF32_R_TYPE (rel->r_info))
4214 {
4215 case R_PPC_GNU_VTINHERIT:
4216 case R_PPC_GNU_VTENTRY:
4217 return NULL;
4218 }
4219
4220 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 4221}
a876ecf9 4222
25dbc73a
AM
4223/* Update the got, plt and dynamic reloc reference counts for the
4224 section being removed. */
4225
4226static bfd_boolean
4227ppc_elf_gc_sweep_hook (bfd *abfd,
4228 struct bfd_link_info *info,
4229 asection *sec,
4230 const Elf_Internal_Rela *relocs)
4231{
4232 struct ppc_elf_link_hash_table *htab;
4233 Elf_Internal_Shdr *symtab_hdr;
4234 struct elf_link_hash_entry **sym_hashes;
4235 bfd_signed_vma *local_got_refcounts;
4236 const Elf_Internal_Rela *rel, *relend;
a6aa5195 4237 asection *got2;
25dbc73a 4238
7dda2462
TG
4239 if (info->relocatable)
4240 return TRUE;
4241
c87b5a93
AM
4242 if ((sec->flags & SEC_ALLOC) == 0)
4243 return TRUE;
4244
25dbc73a
AM
4245 elf_section_data (sec)->local_dynrel = NULL;
4246
4247 htab = ppc_elf_hash_table (info);
0ffa91dd 4248 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
4249 sym_hashes = elf_sym_hashes (abfd);
4250 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 4251 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4252
4253 relend = relocs + sec->reloc_count;
4254 for (rel = relocs; rel < relend; rel++)
4255 {
4256 unsigned long r_symndx;
4257 enum elf_ppc_reloc_type r_type;
4258 struct elf_link_hash_entry *h = NULL;
4259
4260 r_symndx = ELF32_R_SYM (rel->r_info);
4261 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 4262 {
25dbc73a
AM
4263 struct ppc_elf_dyn_relocs **pp, *p;
4264 struct ppc_elf_link_hash_entry *eh;
4265
4266 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4267 while (h->root.type == bfd_link_hash_indirect
4268 || h->root.type == bfd_link_hash_warning)
4269 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4270 eh = (struct ppc_elf_link_hash_entry *) h;
4271
4272 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4273 if (p->sec == sec)
4274 {
4275 /* Everything must go for SEC. */
4276 *pp = p->next;
4277 break;
4278 }
a876ecf9 4279 }
ee05f2fe 4280
25dbc73a
AM
4281 r_type = ELF32_R_TYPE (rel->r_info);
4282 switch (r_type)
ee05f2fe 4283 {
25dbc73a
AM
4284 case R_PPC_GOT_TLSLD16:
4285 case R_PPC_GOT_TLSLD16_LO:
4286 case R_PPC_GOT_TLSLD16_HI:
4287 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4288 case R_PPC_GOT_TLSGD16:
4289 case R_PPC_GOT_TLSGD16_LO:
4290 case R_PPC_GOT_TLSGD16_HI:
4291 case R_PPC_GOT_TLSGD16_HA:
4292 case R_PPC_GOT_TPREL16:
4293 case R_PPC_GOT_TPREL16_LO:
4294 case R_PPC_GOT_TPREL16_HI:
4295 case R_PPC_GOT_TPREL16_HA:
4296 case R_PPC_GOT_DTPREL16:
4297 case R_PPC_GOT_DTPREL16_LO:
4298 case R_PPC_GOT_DTPREL16_HI:
4299 case R_PPC_GOT_DTPREL16_HA:
4300 case R_PPC_GOT16:
4301 case R_PPC_GOT16_LO:
4302 case R_PPC_GOT16_HI:
4303 case R_PPC_GOT16_HA:
4304 if (h != NULL)
ee05f2fe 4305 {
25dbc73a
AM
4306 if (h->got.refcount > 0)
4307 h->got.refcount--;
ee05f2fe 4308 }
25dbc73a
AM
4309 else if (local_got_refcounts != NULL)
4310 {
4311 if (local_got_refcounts[r_symndx] > 0)
4312 local_got_refcounts[r_symndx]--;
4313 }
4314 break;
ee05f2fe 4315
25dbc73a
AM
4316 case R_PPC_REL24:
4317 case R_PPC_REL14:
4318 case R_PPC_REL14_BRTAKEN:
4319 case R_PPC_REL14_BRNTAKEN:
4320 case R_PPC_REL32:
3b36f7e6 4321 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM
4322 break;
4323 /* Fall thru */
ee05f2fe 4324
25dbc73a
AM
4325 case R_PPC_ADDR32:
4326 case R_PPC_ADDR24:
4327 case R_PPC_ADDR16:
4328 case R_PPC_ADDR16_LO:
4329 case R_PPC_ADDR16_HI:
4330 case R_PPC_ADDR16_HA:
4331 case R_PPC_ADDR14:
4332 case R_PPC_ADDR14_BRTAKEN:
4333 case R_PPC_ADDR14_BRNTAKEN:
4334 case R_PPC_UADDR32:
4335 case R_PPC_UADDR16:
87538722
AM
4336 if (info->shared)
4337 break;
4338
25dbc73a
AM
4339 case R_PPC_PLT32:
4340 case R_PPC_PLTREL24:
87538722 4341 case R_PPC_PLTREL32:
25dbc73a
AM
4342 case R_PPC_PLT16_LO:
4343 case R_PPC_PLT16_HI:
4344 case R_PPC_PLT16_HA:
4345 if (h != NULL)
4346 {
a6aa5195
AM
4347 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
4348 struct plt_entry *ent = find_plt_ent (h, got2, addend);
4349 if (ent->plt.refcount > 0)
4350 ent->plt.refcount -= 1;
25dbc73a
AM
4351 }
4352 break;
ee05f2fe 4353
25dbc73a
AM
4354 default:
4355 break;
4356 }
7fce784e 4357 }
7fce784e
AS
4358 return TRUE;
4359}
25dbc73a 4360\f
3a71aa26
AM
4361/* Set plt output section type, htab->tls_get_addr, and call the
4362 generic ELF tls_setup function. */
7fce784e 4363
25dbc73a
AM
4364asection *
4365ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 4366{
25dbc73a 4367 struct ppc_elf_link_hash_table *htab;
7fce784e 4368
25dbc73a 4369 htab = ppc_elf_hash_table (info);
4a3dc543 4370 if (htab->plt_type == PLT_NEW
d7128ce4
AM
4371 && htab->plt != NULL
4372 && htab->plt->output_section != NULL)
4373 {
4374 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4375 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4376 }
4377
25dbc73a
AM
4378 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4379 FALSE, FALSE, TRUE);
25dbc73a 4380 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
4381}
4382
3a71aa26
AM
4383/* Return TRUE iff REL is a branch reloc with a global symbol matching
4384 HASH. */
4385
4386static bfd_boolean
4387branch_reloc_hash_match (const bfd *ibfd,
4388 const Elf_Internal_Rela *rel,
4389 const struct elf_link_hash_entry *hash)
4390{
4391 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4392 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4393 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4394
4395 if (r_symndx >= symtab_hdr->sh_info
4396 && (r_type == R_PPC_PLTREL24
4397 || r_type == R_PPC_LOCAL24PC
4398 || r_type == R_PPC_REL14
4399 || r_type == R_PPC_REL14_BRTAKEN
4400 || r_type == R_PPC_REL14_BRNTAKEN
4401 || r_type == R_PPC_REL24
4402 || r_type == R_PPC_ADDR24
4403 || r_type == R_PPC_ADDR14
4404 || r_type == R_PPC_ADDR14_BRTAKEN
4405 || r_type == R_PPC_ADDR14_BRNTAKEN))
4406 {
4407 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4408 struct elf_link_hash_entry *h;
4409
4410 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4411 while (h->root.type == bfd_link_hash_indirect
4412 || h->root.type == bfd_link_hash_warning)
4413 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4414 if (h == hash)
4415 return TRUE;
4416 }
4417 return FALSE;
4418}
4419
25dbc73a
AM
4420/* Run through all the TLS relocs looking for optimization
4421 opportunities. */
252b5132 4422
25dbc73a
AM
4423bfd_boolean
4424ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4425 struct bfd_link_info *info)
252b5132 4426{
7fce784e 4427 bfd *ibfd;
25dbc73a
AM
4428 asection *sec;
4429 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 4430 int pass;
252b5132 4431
1d483afe 4432 if (info->relocatable || !info->executable)
25dbc73a 4433 return TRUE;
252b5132 4434
7619e7c7 4435 htab = ppc_elf_hash_table (info);
b7fcf6f6
AM
4436 /* Make two passes through the relocs. First time check that tls
4437 relocs involved in setting up a tls_get_addr call are indeed
4438 followed by such a call. If they are not, exclude them from
4439 the optimizations done on the second pass. */
4440 for (pass = 0; pass < 2; ++pass)
4441 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4442 {
4443 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 4444 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7619e7c7 4445
b7fcf6f6
AM
4446 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4447 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4448 {
4449 Elf_Internal_Rela *relstart, *rel, *relend;
252b5132 4450
b7fcf6f6
AM
4451 /* Read the relocations. */
4452 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4453 info->keep_memory);
4454 if (relstart == NULL)
4455 return FALSE;
7619e7c7 4456
b7fcf6f6
AM
4457 relend = relstart + sec->reloc_count;
4458 for (rel = relstart; rel < relend; rel++)
4459 {
4460 enum elf_ppc_reloc_type r_type;
4461 unsigned long r_symndx;
4462 struct elf_link_hash_entry *h = NULL;
4463 char *tls_mask;
4464 char tls_set, tls_clear;
4465 bfd_boolean is_local;
4466 int expecting_tls_get_addr;
4467 bfd_signed_vma *got_count;
4468
4469 r_symndx = ELF32_R_SYM (rel->r_info);
4470 if (r_symndx >= symtab_hdr->sh_info)
4471 {
4472 struct elf_link_hash_entry **sym_hashes;
7fce784e 4473
b7fcf6f6
AM
4474 sym_hashes = elf_sym_hashes (ibfd);
4475 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4476 while (h->root.type == bfd_link_hash_indirect
4477 || h->root.type == bfd_link_hash_warning)
4478 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4479 }
7619e7c7 4480
b7fcf6f6
AM
4481 expecting_tls_get_addr = 0;
4482 is_local = FALSE;
4483 if (h == NULL
4484 || !h->def_dynamic)
4485 is_local = TRUE;
7619e7c7 4486
b7fcf6f6
AM
4487 r_type = ELF32_R_TYPE (rel->r_info);
4488 switch (r_type)
4489 {
4490 case R_PPC_GOT_TLSLD16:
4491 case R_PPC_GOT_TLSLD16_LO:
4492 expecting_tls_get_addr = 1;
4493 /* Fall thru */
4494
4495 case R_PPC_GOT_TLSLD16_HI:
4496 case R_PPC_GOT_TLSLD16_HA:
4497 /* These relocs should never be against a symbol
4498 defined in a shared lib. Leave them alone if
4499 that turns out to be the case. */
4500 if (!is_local)
4501 continue;
4502
4503 /* LD -> LE */
4504 tls_set = 0;
4505 tls_clear = TLS_LD;
4506 break;
4507
4508 case R_PPC_GOT_TLSGD16:
4509 case R_PPC_GOT_TLSGD16_LO:
4510 expecting_tls_get_addr = 1;
4511 /* Fall thru */
4512
4513 case R_PPC_GOT_TLSGD16_HI:
4514 case R_PPC_GOT_TLSGD16_HA:
4515 if (is_local)
4516 /* GD -> LE */
4517 tls_set = 0;
4518 else
4519 /* GD -> IE */
4520 tls_set = TLS_TLS | TLS_TPRELGD;
4521 tls_clear = TLS_GD;
4522 break;
4523
4524 case R_PPC_GOT_TPREL16:
4525 case R_PPC_GOT_TPREL16_LO:
4526 case R_PPC_GOT_TPREL16_HI:
4527 case R_PPC_GOT_TPREL16_HA:
4528 if (is_local)
4529 {
4530 /* IE -> LE */
4531 tls_set = 0;
4532 tls_clear = TLS_TPREL;
4533 break;
4534 }
4535 else
4536 continue;
4537
4538 default:
25dbc73a 4539 continue;
b7fcf6f6 4540 }
25dbc73a 4541
b7fcf6f6
AM
4542 if (pass == 0)
4543 {
727fc41e
AM
4544 if (!expecting_tls_get_addr
4545 || !sec->has_tls_get_addr_call)
b7fcf6f6 4546 continue;
25dbc73a 4547
3a71aa26
AM
4548 if (rel + 1 < relend
4549 && branch_reloc_hash_match (ibfd, rel + 1,
4550 htab->tls_get_addr))
4551 continue;
25dbc73a 4552
b7fcf6f6
AM
4553 /* Uh oh, we didn't find the expected call. We
4554 could just mark this symbol to exclude it
4555 from tls optimization but it's safer to skip
4556 the entire section. */
4557 sec->has_tls_reloc = 0;
4558 break;
4559 }
25dbc73a 4560
b7fcf6f6
AM
4561 if (h != NULL)
4562 {
4563 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4564 got_count = &h->got.refcount;
4565 }
4566 else
4567 {
4568 Elf_Internal_Sym *sym;
4569 bfd_signed_vma *lgot_refs;
4570 char *lgot_masks;
25dbc73a 4571
b7fcf6f6
AM
4572 if (locsyms == NULL)
4573 {
4574 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4575 if (locsyms == NULL)
4576 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4577 symtab_hdr->sh_info,
4578 0, NULL, NULL, NULL);
4579 if (locsyms == NULL)
4580 {
4581 if (elf_section_data (sec)->relocs != relstart)
4582 free (relstart);
4583 return FALSE;
4584 }
4585 }
4586 sym = locsyms + r_symndx;
4587 lgot_refs = elf_local_got_refcounts (ibfd);
4588 if (lgot_refs == NULL)
4589 abort ();
4590 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4591 tls_mask = &lgot_masks[r_symndx];
4592 got_count = &lgot_refs[r_symndx];
4593 }
25dbc73a 4594
b7fcf6f6
AM
4595 if (tls_set == 0)
4596 {
4597 /* We managed to get rid of a got entry. */
4598 if (*got_count > 0)
4599 *got_count -= 1;
4600 }
25dbc73a 4601
b7fcf6f6
AM
4602 if (expecting_tls_get_addr)
4603 {
4604 struct plt_entry *ent;
25dbc73a 4605
b7fcf6f6
AM
4606 ent = find_plt_ent (htab->tls_get_addr, NULL, 0);
4607 if (ent != NULL && ent->plt.refcount > 0)
4608 ent->plt.refcount -= 1;
4609 }
25dbc73a 4610
b7fcf6f6
AM
4611 *tls_mask |= tls_set;
4612 *tls_mask &= ~tls_clear;
4613 }
25dbc73a 4614
b7fcf6f6
AM
4615 if (elf_section_data (sec)->relocs != relstart)
4616 free (relstart);
4617 }
4618
4619 if (locsyms != NULL
4620 && (symtab_hdr->contents != (unsigned char *) locsyms))
4621 {
4622 if (!info->keep_memory)
4623 free (locsyms);
4624 else
4625 symtab_hdr->contents = (unsigned char *) locsyms;
4626 }
4627 }
25dbc73a
AM
4628 return TRUE;
4629}
4630\f
625af618
AM
4631/* Return true if we have dynamic relocs that apply to read-only sections. */
4632
4633static bfd_boolean
4634readonly_dynrelocs (struct elf_link_hash_entry *h)
4635{
4636 struct ppc_elf_dyn_relocs *p;
4637
4638 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4639 {
4640 asection *s = p->sec->output_section;
4641
4642 if (s != NULL
4643 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4644 == (SEC_READONLY | SEC_ALLOC)))
4645 return TRUE;
4646 }
4647 return FALSE;
4648}
4649
25dbc73a
AM
4650/* Adjust a symbol defined by a dynamic object and referenced by a
4651 regular object. The current definition is in some section of the
4652 dynamic object, but we're not including those sections. We have to
4653 change the definition to something the rest of the link can
4654 understand. */
7fce784e 4655
25dbc73a
AM
4656static bfd_boolean
4657ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4658 struct elf_link_hash_entry *h)
4659{
4660 struct ppc_elf_link_hash_table *htab;
4661 asection *s;
7fce784e 4662
25dbc73a
AM
4663#ifdef DEBUG
4664 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4665 h->root.root.string);
4666#endif
252b5132 4667
25dbc73a
AM
4668 /* Make sure we know what is going on here. */
4669 htab = ppc_elf_hash_table (info);
4670 BFD_ASSERT (htab->elf.dynobj != NULL
4671 && (h->needs_plt
4672 || h->u.weakdef != NULL
4673 || (h->def_dynamic
4674 && h->ref_regular
4675 && !h->def_regular)));
252b5132 4676
25dbc73a
AM
4677 /* Deal with function syms. */
4678 if (h->type == STT_FUNC
4679 || h->needs_plt)
4680 {
4681 /* Clear procedure linkage table information for any symbol that
4682 won't need a .plt entry. */
a6aa5195
AM
4683 struct plt_entry *ent;
4684 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4685 if (ent->plt.refcount > 0)
4686 break;
4687 if (ent == NULL
25dbc73a
AM
4688 || SYMBOL_CALLS_LOCAL (info, h)
4689 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4690 && h->root.type == bfd_link_hash_undefweak))
252b5132 4691 {
25dbc73a 4692 /* A PLT entry is not required/allowed when:
252b5132 4693
25dbc73a
AM
4694 1. We are not using ld.so; because then the PLT entry
4695 can't be set up, so we can't use one. In this case,
4696 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 4697
25dbc73a
AM
4698 2. GC has rendered the entry unused.
4699
4700 3. We know for certain that a call to this symbol
4701 will go to this object, or will remain undefined. */
a6aa5195 4702 h->plt.plist = NULL;
25dbc73a
AM
4703 h->needs_plt = 0;
4704 }
625af618
AM
4705 else
4706 {
4707 /* After adjust_dynamic_symbol, non_got_ref set means that
4708 dyn_relocs for this symbol should be discarded.
4709 If we get here we know we are making a PLT entry for this
4710 symbol, and in an executable we'd normally resolve
4711 relocations against this symbol to the PLT entry. Allow
4712 dynamic relocs if the reference is weak, and the dynamic
4713 relocs will not cause text relocation. */
4714 if (!h->ref_regular_nonweak
4715 && h->non_got_ref
4716 && !htab->is_vxworks
4717 && !ppc_elf_hash_entry (h)->has_sda_refs
4718 && !readonly_dynrelocs (h))
4719 h->non_got_ref = 0;
4720 }
25dbc73a 4721 return TRUE;
252b5132 4722 }
25dbc73a 4723 else
a6aa5195 4724 h->plt.plist = NULL;
252b5132 4725
25dbc73a
AM
4726 /* If this is a weak symbol, and there is a real definition, the
4727 processor independent code will have arranged for us to see the
4728 real definition first, and we can just use the same value. */
4729 if (h->u.weakdef != NULL)
252b5132 4730 {
25dbc73a
AM
4731 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4732 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4733 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4734 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4735 if (ELIMINATE_COPY_RELOCS)
4736 h->non_got_ref = h->u.weakdef->non_got_ref;
4737 return TRUE;
4738 }
dc810e39 4739
25dbc73a
AM
4740 /* This is a reference to a symbol defined by a dynamic object which
4741 is not a function. */
252b5132 4742
25dbc73a
AM
4743 /* If we are creating a shared library, we must presume that the
4744 only references to the symbol are via the global offset table.
4745 For such cases we need not do anything here; the relocations will
4746 be handled correctly by relocate_section. */
4747 if (info->shared)
4748 return TRUE;
252b5132 4749
25dbc73a
AM
4750 /* If there are no references to this symbol that do not use the
4751 GOT, we don't need to generate a copy reloc. */
4752 if (!h->non_got_ref)
4753 return TRUE;
4754
cfd2c773
NS
4755 /* If we didn't find any dynamic relocs in read-only sections, then
4756 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4757 We can't do this if there are any small data relocations. This
4758 doesn't work on VxWorks, where we can not have dynamic
4759 relocations (other than copy and jump slot relocations) in an
4760 executable. */
4dc4a9a5 4761 if (ELIMINATE_COPY_RELOCS
cfd2c773 4762 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
4763 && !htab->is_vxworks
4764 && !h->def_regular
4765 && !readonly_dynrelocs (h))
25dbc73a 4766 {
625af618
AM
4767 h->non_got_ref = 0;
4768 return TRUE;
252b5132
RH
4769 }
4770
909272ee
AM
4771 if (h->size == 0)
4772 {
4773 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4774 h->root.root.string);
4775 return TRUE;
4776 }
4777
25dbc73a
AM
4778 /* We must allocate the symbol in our .dynbss section, which will
4779 become part of the .bss section of the executable. There will be
4780 an entry for this symbol in the .dynsym section. The dynamic
4781 object will contain position independent code, so all references
4782 from the dynamic object to this symbol will go through the global
4783 offset table. The dynamic linker will use the .dynsym entry to
4784 determine the address it must put in the global offset table, so
4785 both the dynamic object and the regular object will refer to the
4786 same memory location for the variable.
4787
4dc4a9a5
DJ
4788 Of course, if the symbol is referenced using SDAREL relocs, we
4789 must instead allocate it in .sbss. */
25dbc73a 4790
4dc4a9a5 4791 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4792 s = htab->dynsbss;
4793 else
4794 s = htab->dynbss;
4795 BFD_ASSERT (s != NULL);
4796
4797 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4798 copy the initial value out of the dynamic object and into the
4799 runtime process image. We need to remember the offset into the
4800 .rela.bss section we are going to use. */
4801 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4802 {
4803 asection *srel;
4804
4dc4a9a5 4805 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
4806 srel = htab->relsbss;
4807 else
4808 srel = htab->relbss;
4809 BFD_ASSERT (srel != NULL);
4810 srel->size += sizeof (Elf32_External_Rela);
4811 h->needs_copy = 1;
4812 }
7619e7c7 4813
027297b7 4814 return _bfd_elf_adjust_dynamic_copy (h, s);
25dbc73a
AM
4815}
4816\f
ac39eb42
AM
4817/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4818 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4819 specifying the addend on the plt relocation. For -fpic code, the sym
4820 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4821 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
4822
4823static bfd_boolean
4824add_stub_sym (struct plt_entry *ent,
4825 struct elf_link_hash_entry *h,
ac39eb42 4826 struct bfd_link_info *info)
0ba07910
AM
4827{
4828 struct elf_link_hash_entry *sh;
4829 size_t len1, len2, len3;
4830 char *name;
ac39eb42
AM
4831 const char *stub;
4832 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4833
4834 if (info->shared || info->pie)
4835 stub = ".plt_pic32.";
4836 else
4837 stub = ".plt_call32.";
0ba07910
AM
4838
4839 len1 = strlen (h->root.root.string);
ac39eb42 4840 len2 = strlen (stub);
0ba07910
AM
4841 len3 = 0;
4842 if (ent->sec)
4843 len3 = strlen (ent->sec->name);
ac39eb42 4844 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
4845 if (name == NULL)
4846 return FALSE;
4847 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4848 if (ent->sec)
4849 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
4850 memcpy (name + 8 + len3, stub, len2);
4851 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
4852 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4853 if (sh == NULL)
4854 return FALSE;
4855 if (sh->root.type == bfd_link_hash_new)
4856 {
4857 sh->root.type = bfd_link_hash_defined;
4858 sh->root.u.def.section = htab->glink;
4859 sh->root.u.def.value = ent->glink_offset;
4860 sh->ref_regular = 1;
4861 sh->def_regular = 1;
4862 sh->ref_regular_nonweak = 1;
4863 sh->forced_local = 1;
4864 sh->non_elf = 0;
4865 }
4866 return TRUE;
4867}
4868
3b36f7e6
AM
4869/* Allocate NEED contiguous space in .got, and return the offset.
4870 Handles allocation of the got header when crossing 32k. */
4871
4872static bfd_vma
4873allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4874{
4875 bfd_vma where;
4a3dc543 4876 unsigned int max_before_header;
3b36f7e6 4877
4a3dc543 4878 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
4879 {
4880 where = htab->got->size;
4881 htab->got->size += need;
4882 }
3b36f7e6
AM
4883 else
4884 {
4a3dc543
RS
4885 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4886 if (need <= htab->got_gap)
3b36f7e6 4887 {
4a3dc543
RS
4888 where = max_before_header - htab->got_gap;
4889 htab->got_gap -= need;
4890 }
4891 else
4892 {
4893 if (htab->got->size + need > max_before_header
4894 && htab->got->size <= max_before_header)
4895 {
4896 htab->got_gap = max_before_header - htab->got->size;
4897 htab->got->size = max_before_header + htab->got_header_size;
4898 }
4899 where = htab->got->size;
4900 htab->got->size += need;
3b36f7e6 4901 }
3b36f7e6
AM
4902 }
4903 return where;
4904}
4905
25dbc73a 4906/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 4907
b34976b6 4908static bfd_boolean
25dbc73a 4909allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 4910{
25dbc73a
AM
4911 struct bfd_link_info *info = inf;
4912 struct ppc_elf_link_hash_entry *eh;
7619e7c7 4913 struct ppc_elf_link_hash_table *htab;
25dbc73a 4914 struct ppc_elf_dyn_relocs *p;
252b5132 4915
25dbc73a 4916 if (h->root.type == bfd_link_hash_indirect)
b34976b6 4917 return TRUE;
252b5132 4918
25dbc73a
AM
4919 if (h->root.type == bfd_link_hash_warning)
4920 /* When warning symbols are created, they **replace** the "real"
4921 entry in the hash table, thus we never get to see the real
4922 symbol in a hash traversal. So look at it now. */
4923 h = (struct elf_link_hash_entry *) h->root.u.i.link;
e47cd125 4924
7619e7c7 4925 htab = ppc_elf_hash_table (info);
a6aa5195 4926 if (htab->elf.dynamic_sections_created)
252b5132 4927 {
a6aa5195
AM
4928 struct plt_entry *ent;
4929 bfd_boolean doneone = FALSE;
28e99bb6
AM
4930 bfd_vma plt_offset = 0, glink_offset = 0;
4931
a6aa5195
AM
4932 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4933 if (ent->plt.refcount > 0)
4934 {
4935 /* Make sure this symbol is output as a dynamic symbol. */
4936 if (h->dynindx == -1
4937 && !h->forced_local)
4938 {
4939 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4940 return FALSE;
4941 }
252b5132 4942
a6aa5195
AM
4943 if (info->shared
4944 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4945 {
4946 asection *s = htab->plt;
7619e7c7 4947
4a3dc543 4948 if (htab->plt_type == PLT_NEW)
a6aa5195 4949 {
a6aa5195 4950 if (!doneone)
28e99bb6
AM
4951 {
4952 plt_offset = s->size;
4953 s->size += 4;
4954 }
4955 ent->plt.offset = plt_offset;
d7128ce4 4956
a6aa5195 4957 s = htab->glink;
28e99bb6
AM
4958 if (!doneone || info->shared || info->pie)
4959 {
4960 glink_offset = s->size;
4961 s->size += GLINK_ENTRY_SIZE;
4962 }
4963 if (!doneone
4964 && !info->shared
625af618 4965 && h->def_dynamic
a6aa5195
AM
4966 && !h->def_regular)
4967 {
4968 h->root.u.def.section = s;
28e99bb6 4969 h->root.u.def.value = glink_offset;
a6aa5195 4970 }
28e99bb6 4971 ent->glink_offset = glink_offset;
0ba07910
AM
4972
4973 if (htab->emit_stub_syms
ac39eb42 4974 && !add_stub_sym (ent, h, info))
0ba07910 4975 return FALSE;
a6aa5195
AM
4976 }
4977 else
4978 {
a6aa5195
AM
4979 if (!doneone)
4980 {
28e99bb6
AM
4981 /* If this is the first .plt entry, make room
4982 for the special first entry. */
4983 if (s->size == 0)
9d8504b1 4984 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
4985
4986 /* The PowerPC PLT is actually composed of two
4987 parts, the first part is 2 words (for a load
4988 and a jump), and then there is a remaining
4989 word available at the end. */
9d8504b1
PB
4990 plt_offset = (htab->plt_initial_entry_size
4991 + (htab->plt_slot_size
4992 * ((s->size
4993 - htab->plt_initial_entry_size)
4994 / htab->plt_entry_size)));
28e99bb6
AM
4995
4996 /* If this symbol is not defined in a regular
4997 file, and we are not generating a shared
4998 library, then set the symbol to this location
4999 in the .plt. This is required to make
5000 function pointers compare as equal between
5001 the normal executable and the shared library. */
5002 if (! info->shared
625af618 5003 && h->def_dynamic
28e99bb6
AM
5004 && !h->def_regular)
5005 {
5006 h->root.u.def.section = s;
5007 h->root.u.def.value = plt_offset;
5008 }
5009
9d8504b1
PB
5010 /* Make room for this entry. */
5011 s->size += htab->plt_entry_size;
5012 /* After the 8192nd entry, room for two entries
5013 is allocated. */
4a3dc543 5014 if (htab->plt_type == PLT_OLD
9d8504b1
PB
5015 && (s->size - htab->plt_initial_entry_size)
5016 / htab->plt_entry_size
5017 > PLT_NUM_SINGLE_ENTRIES)
5018 s->size += htab->plt_entry_size;
a6aa5195 5019 }
28e99bb6 5020 ent->plt.offset = plt_offset;
a6aa5195 5021 }
25dbc73a 5022
a6aa5195
AM
5023 /* We also need to make an entry in the .rela.plt section. */
5024 if (!doneone)
5025 {
5026 htab->relplt->size += sizeof (Elf32_External_Rela);
9d8504b1 5027
4a3dc543 5028 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
5029 {
5030 /* Allocate space for the unloaded relocations. */
5031 if (!info->shared)
5032 {
5033 if (ent->plt.offset
5034 == (bfd_vma) htab->plt_initial_entry_size)
5035 {
5036 htab->srelplt2->size
5037 += sizeof (Elf32_External_Rela)
5038 * VXWORKS_PLTRESOLVE_RELOCS;
5039 }
5040
5041 htab->srelplt2->size
5042 += sizeof (Elf32_External_Rela)
5043 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
5044 }
5045
5046 /* Every PLT entry has an associated GOT entry in
5047 .got.plt. */
5048 htab->sgotplt->size += 4;
5049 }
a6aa5195
AM
5050 doneone = TRUE;
5051 }
5052 }
5053 else
5054 ent->plt.offset = (bfd_vma) -1;
a6aa5195 5055 }
2ce859a1
AM
5056 else
5057 ent->plt.offset = (bfd_vma) -1;
5058
5059 if (!doneone)
5060 {
5061 h->plt.plist = NULL;
5062 h->needs_plt = 0;
5063 }
25dbc73a
AM
5064 }
5065 else
5066 {
a6aa5195 5067 h->plt.plist = NULL;
25dbc73a
AM
5068 h->needs_plt = 0;
5069 }
5070
5071 eh = (struct ppc_elf_link_hash_entry *) h;
5072 if (eh->elf.got.refcount > 0)
5073 {
d6e14abc
AM
5074 bfd_boolean dyn;
5075 unsigned int need;
5076
25dbc73a
AM
5077 /* Make sure this symbol is output as a dynamic symbol. */
5078 if (eh->elf.dynindx == -1
b099ab9f
AM
5079 && !eh->elf.forced_local
5080 && htab->elf.dynamic_sections_created)
25dbc73a
AM
5081 {
5082 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 5083 return FALSE;
25dbc73a 5084 }
252b5132 5085
d6e14abc
AM
5086 need = 0;
5087 if ((eh->tls_mask & TLS_TLS) != 0)
25dbc73a 5088 {
d6e14abc 5089 if ((eh->tls_mask & TLS_LD) != 0)
252b5132 5090 {
d6e14abc
AM
5091 if (!eh->elf.def_dynamic)
5092 /* We'll just use htab->tlsld_got.offset. This should
5093 always be the case. It's a little odd if we have
5094 a local dynamic reloc against a non-local symbol. */
5095 htab->tlsld_got.refcount += 1;
5096 else
3b36f7e6 5097 need += 8;
252b5132 5098 }
d6e14abc
AM
5099 if ((eh->tls_mask & TLS_GD) != 0)
5100 need += 8;
5101 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5102 need += 4;
5103 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 5104 need += 4;
d6e14abc
AM
5105 }
5106 else
5107 need += 4;
5108 if (need == 0)
5109 eh->elf.got.offset = (bfd_vma) -1;
5110 else
5111 {
3b36f7e6 5112 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM
5113 dyn = htab->elf.dynamic_sections_created;
5114 if ((info->shared
5115 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5116 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5117 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 5118 {
3b36f7e6
AM
5119 /* All the entries we allocated need relocs.
5120 Except LD only needs one. */
d6e14abc
AM
5121 if ((eh->tls_mask & TLS_LD) != 0
5122 && eh->elf.def_dynamic)
3b36f7e6
AM
5123 need -= 4;
5124 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 5125 }
25dbc73a
AM
5126 }
5127 }
5128 else
5129 eh->elf.got.offset = (bfd_vma) -1;
252b5132 5130
b099ab9f
AM
5131 if (eh->dyn_relocs == NULL
5132 || !htab->elf.dynamic_sections_created)
25dbc73a 5133 return TRUE;
252b5132 5134
25dbc73a
AM
5135 /* In the shared -Bsymbolic case, discard space allocated for
5136 dynamic pc-relative relocs against symbols which turn out to be
5137 defined in regular objects. For the normal shared case, discard
5138 space for relocs that have become local due to symbol visibility
5139 changes. */
5140
5141 if (info->shared)
5142 {
5143 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 5144 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
5145 generated via assembly. We want calls to protected symbols to
5146 resolve directly to the function rather than going via the plt.
5147 If people want function pointer comparisons to work as expected
5148 then they should avoid writing weird assembly. */
5149 if (SYMBOL_CALLS_LOCAL (info, h))
5150 {
5151 struct ppc_elf_dyn_relocs **pp;
5152
5153 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 5154 {
25dbc73a
AM
5155 p->count -= p->pc_count;
5156 p->pc_count = 0;
5157 if (p->count == 0)
5158 *pp = p->next;
5159 else
5160 pp = &p->next;
252b5132 5161 }
25dbc73a 5162 }
252b5132 5163
3348747a
NS
5164 if (htab->is_vxworks)
5165 {
5166 struct ppc_elf_dyn_relocs **pp;
5167
5168 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5169 {
5170 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5171 *pp = p->next;
5172 else
5173 pp = &p->next;
5174 }
5175 }
5176
89200bf8
AM
5177 /* Discard relocs on undefined symbols that must be local. */
5178 if (eh->dyn_relocs != NULL
5179 && h->root.type == bfd_link_hash_undefined
5180 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5181 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5182 eh->dyn_relocs = NULL;
5183
25dbc73a
AM
5184 /* Also discard relocs on undefined weak syms with non-default
5185 visibility. */
cab87ef9
AM
5186 if (eh->dyn_relocs != NULL
5187 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 5188 {
dfbb6ac9
AM
5189 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5190 eh->dyn_relocs = NULL;
5191
5192 /* Make sure undefined weak symbols are output as a dynamic
5193 symbol in PIEs. */
5194 else if (h->dynindx == -1
5195 && !h->forced_local)
5196 {
5197 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5198 return FALSE;
5199 }
25dbc73a
AM
5200 }
5201 }
5202 else if (ELIMINATE_COPY_RELOCS)
5203 {
5204 /* For the non-shared case, discard space for relocs against
5205 symbols which turn out to need copy relocs or are not
5206 dynamic. */
7619e7c7 5207
25dbc73a 5208 if (!h->non_got_ref
25dbc73a
AM
5209 && !h->def_regular)
5210 {
5211 /* Make sure this symbol is output as a dynamic symbol.
5212 Undefined weak syms won't yet be marked as dynamic. */
5213 if (h->dynindx == -1
5214 && !h->forced_local)
5215 {
5216 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5217 return FALSE;
5218 }
7619e7c7 5219
25dbc73a
AM
5220 /* If that succeeded, we know we'll be keeping all the
5221 relocs. */
5222 if (h->dynindx != -1)
5223 goto keep;
5224 }
252b5132 5225
25dbc73a 5226 eh->dyn_relocs = NULL;
252b5132 5227
25dbc73a
AM
5228 keep: ;
5229 }
252b5132 5230
25dbc73a
AM
5231 /* Finally, allocate space. */
5232 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5233 {
5234 asection *sreloc = elf_section_data (p->sec)->sreloc;
5235 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5236 }
252b5132 5237
25dbc73a
AM
5238 return TRUE;
5239}
7619e7c7 5240
625af618
AM
5241/* Set DF_TEXTREL if we find any dynamic relocs that apply to
5242 read-only sections. */
7619e7c7 5243
25dbc73a 5244static bfd_boolean
625af618 5245maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 5246{
25dbc73a
AM
5247 if (h->root.type == bfd_link_hash_indirect)
5248 return TRUE;
252b5132 5249
25dbc73a
AM
5250 if (h->root.type == bfd_link_hash_warning)
5251 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5252
625af618 5253 if (readonly_dynrelocs (h))
25dbc73a 5254 {
625af618 5255 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 5256
625af618
AM
5257 /* Not an error, just cut short the traversal. */
5258 return FALSE;
25dbc73a
AM
5259 }
5260 return TRUE;
5261}
5262
5263/* Set the sizes of the dynamic sections. */
5264
5265static bfd_boolean
5266ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5267 struct bfd_link_info *info)
5268{
5269 struct ppc_elf_link_hash_table *htab;
5270 asection *s;
5271 bfd_boolean relocs;
5272 bfd *ibfd;
7fce784e 5273
252b5132 5274#ifdef DEBUG
25dbc73a 5275 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 5276#endif
252b5132 5277
25dbc73a
AM
5278 htab = ppc_elf_hash_table (info);
5279 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 5280
25dbc73a
AM
5281 if (elf_hash_table (info)->dynamic_sections_created)
5282 {
5283 /* Set the contents of the .interp section to the interpreter. */
5284 if (info->executable)
5285 {
5286 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5287 BFD_ASSERT (s != NULL);
5288 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5289 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5290 }
5291 }
252b5132 5292
4a3dc543 5293 if (htab->plt_type == PLT_OLD)
d7128ce4 5294 htab->got_header_size = 16;
4a3dc543 5295 else if (htab->plt_type == PLT_NEW)
d7128ce4 5296 htab->got_header_size = 12;
252b5132 5297
25dbc73a
AM
5298 /* Set up .got offsets for local syms, and space for local dynamic
5299 relocs. */
5300 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5301 {
5302 bfd_signed_vma *local_got;
5303 bfd_signed_vma *end_local_got;
5304 char *lgot_masks;
5305 bfd_size_type locsymcount;
5306 Elf_Internal_Shdr *symtab_hdr;
7fce784e 5307
0c8d6e5c 5308 if (!is_ppc_elf (ibfd))
25dbc73a 5309 continue;
7fce784e 5310
25dbc73a
AM
5311 for (s = ibfd->sections; s != NULL; s = s->next)
5312 {
5313 struct ppc_elf_dyn_relocs *p;
252b5132 5314
25dbc73a
AM
5315 for (p = ((struct ppc_elf_dyn_relocs *)
5316 elf_section_data (s)->local_dynrel);
5317 p != NULL;
5318 p = p->next)
5319 {
5320 if (!bfd_is_abs_section (p->sec)
5321 && bfd_is_abs_section (p->sec->output_section))
5322 {
5323 /* Input section has been discarded, either because
5324 it is a copy of a linkonce section or due to
5325 linker script /DISCARD/, so we'll be discarding
5326 the relocs too. */
7fce784e 5327 }
3348747a
NS
5328 else if (htab->is_vxworks
5329 && strcmp (p->sec->output_section->name,
5330 ".tls_vars") == 0)
5331 {
5332 /* Relocations in vxworks .tls_vars sections are
5333 handled specially by the loader. */
5334 }
25dbc73a 5335 else if (p->count != 0)
7fce784e 5336 {
25dbc73a
AM
5337 elf_section_data (p->sec)->sreloc->size
5338 += p->count * sizeof (Elf32_External_Rela);
5339 if ((p->sec->output_section->flags
5340 & (SEC_READONLY | SEC_ALLOC))
5341 == (SEC_READONLY | SEC_ALLOC))
5342 info->flags |= DF_TEXTREL;
7fce784e 5343 }
252b5132 5344 }
252b5132 5345 }
252b5132 5346
25dbc73a
AM
5347 local_got = elf_local_got_refcounts (ibfd);
5348 if (!local_got)
5349 continue;
252b5132 5350
0ffa91dd 5351 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
5352 locsymcount = symtab_hdr->sh_info;
5353 end_local_got = local_got + locsymcount;
5354 lgot_masks = (char *) end_local_got;
25dbc73a
AM
5355 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5356 if (*local_got > 0)
5357 {
d6e14abc
AM
5358 unsigned int need = 0;
5359 if ((*lgot_masks & TLS_TLS) != 0)
25dbc73a 5360 {
d6e14abc
AM
5361 if ((*lgot_masks & TLS_GD) != 0)
5362 need += 8;
5363 if ((*lgot_masks & TLS_LD) != 0)
5364 htab->tlsld_got.refcount += 1;
5365 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5366 need += 4;
5367 if ((*lgot_masks & TLS_DTPREL) != 0)
5368 need += 4;
25dbc73a 5369 }
d6e14abc
AM
5370 else
5371 need += 4;
5372 if (need == 0)
5373 *local_got = (bfd_vma) -1;
25dbc73a
AM
5374 else
5375 {
3b36f7e6 5376 *local_got = allocate_got (htab, need);
25dbc73a 5377 if (info->shared)
3b36f7e6
AM
5378 htab->relgot->size += (need
5379 * (sizeof (Elf32_External_Rela) / 4));
25dbc73a
AM
5380 }
5381 }
5382 else
5383 *local_got = (bfd_vma) -1;
5384 }
252b5132 5385
b7fcf6f6
AM
5386 /* Allocate space for global sym dynamic relocs. */
5387 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5388
3b36f7e6
AM
5389 if (htab->tlsld_got.refcount > 0)
5390 {
5391 htab->tlsld_got.offset = allocate_got (htab, 8);
5392 if (info->shared)
5393 htab->relgot->size += sizeof (Elf32_External_Rela);
5394 }
5395 else
5396 htab->tlsld_got.offset = (bfd_vma) -1;
5397
4a3dc543 5398 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
5399 {
5400 unsigned int g_o_t = 32768;
5401
4d962050
AM
5402 /* If we haven't allocated the header, do so now. When we get here,
5403 for old plt/got the got size will be 0 to 32764 (not allocated),
5404 or 32780 to 65536 (header allocated). For new plt/got, the
5405 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM
5406 if (htab->got->size <= 32768)
5407 {
5408 g_o_t = htab->got->size;
4a3dc543 5409 if (htab->plt_type == PLT_OLD)
4d962050 5410 g_o_t += 4;
3b36f7e6
AM
5411 htab->got->size += htab->got_header_size;
5412 }
3b36f7e6
AM
5413
5414 htab->elf.hgot->root.u.def.value = g_o_t;
5415 }
5416
d7128ce4
AM
5417 if (htab->glink != NULL && htab->glink->size != 0)
5418 {
5419 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM
5420 /* Space for the branch table. */
5421 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5422 /* Pad out to align the start of PLTresolve. */
5423 htab->glink->size += -htab->glink->size & 15;
d7128ce4 5424 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910
AM
5425
5426 if (htab->emit_stub_syms)
5427 {
5428 struct elf_link_hash_entry *sh;
5429 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5430 TRUE, FALSE, FALSE);
5431 if (sh == NULL)
5432 return FALSE;
5433 if (sh->root.type == bfd_link_hash_new)
5434 {
5435 sh->root.type = bfd_link_hash_defined;
5436 sh->root.u.def.section = htab->glink;
5437 sh->root.u.def.value = htab->glink_pltresolve;
5438 sh->ref_regular = 1;
5439 sh->def_regular = 1;
5440 sh->ref_regular_nonweak = 1;
5441 sh->forced_local = 1;
5442 sh->non_elf = 0;
5443 }
5444 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5445 TRUE, FALSE, FALSE);
5446 if (sh == NULL)
5447 return FALSE;
5448 if (sh->root.type == bfd_link_hash_new)
5449 {
5450 sh->root.type = bfd_link_hash_defined;
5451 sh->root.u.def.section = htab->glink;
5452 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5453 sh->ref_regular = 1;
5454 sh->def_regular = 1;
5455 sh->ref_regular_nonweak = 1;
5456 sh->forced_local = 1;
5457 sh->non_elf = 0;
5458 }
5459 }
d7128ce4
AM
5460 }
5461
25dbc73a
AM
5462 /* We've now determined the sizes of the various dynamic sections.
5463 Allocate memory for them. */
5464 relocs = FALSE;
5465 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 5466 {
9d8504b1
PB
5467 bfd_boolean strip_section = TRUE;
5468
25dbc73a
AM
5469 if ((s->flags & SEC_LINKER_CREATED) == 0)
5470 continue;
252b5132 5471
25dbc73a 5472 if (s == htab->plt
d7128ce4 5473 || s == htab->glink
644285ef 5474 || s == htab->got
9d8504b1 5475 || s == htab->sgotplt
c456f082
AM
5476 || s == htab->sbss
5477 || s == htab->dynbss
5478 || s == htab->dynsbss)
25dbc73a 5479 {
9d8504b1
PB
5480 /* We'd like to strip these sections if they aren't needed, but if
5481 we've exported dynamic symbols from them we must leave them.
5482 It's too late to tell BFD to get rid of the symbols. */
7325306f 5483 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
9d8504b1 5484 strip_section = FALSE;
25dbc73a
AM
5485 /* Strip this section if we don't need it; see the
5486 comment below. */
5487 }
c9a2f333
AM
5488 else if (s == htab->sdata[0].section
5489 || s == htab->sdata[1].section)
25dbc73a 5490 {
c9a2f333 5491 /* Strip these too. */
25dbc73a 5492 }
0112cd26 5493 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
25dbc73a 5494 {
c456f082 5495 if (s->size != 0)
25dbc73a
AM
5496 {
5497 /* Remember whether there are any relocation sections. */
5498 relocs = TRUE;
252b5132 5499
25dbc73a
AM
5500 /* We use the reloc_count field as a counter if we need
5501 to copy relocs into the output file. */
5502 s->reloc_count = 0;
252b5132
RH
5503 }
5504 }
25dbc73a
AM
5505 else
5506 {
5507 /* It's not one of our sections, so don't allocate space. */
5508 continue;
5509 }
252b5132 5510
9d8504b1 5511 if (s->size == 0 && strip_section)
25dbc73a 5512 {
c456f082
AM
5513 /* If we don't need this section, strip it from the
5514 output file. This is mostly to handle .rela.bss and
5515 .rela.plt. We must create both sections in
5516 create_dynamic_sections, because they must be created
5517 before the linker maps input sections to output
5518 sections. The linker does that before
5519 adjust_dynamic_symbol is called, and it is that
5520 function which decides whether anything needs to go
5521 into these sections. */
8423293d 5522 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
5523 continue;
5524 }
7fce784e 5525
d7128ce4 5526 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
5527 continue;
5528
25dbc73a
AM
5529 /* Allocate memory for the section contents. */
5530 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5531 if (s->contents == NULL)
5532 return FALSE;
5533 }
252b5132 5534
25dbc73a 5535 if (htab->elf.dynamic_sections_created)
7619e7c7 5536 {
25dbc73a
AM
5537 /* Add some entries to the .dynamic section. We fill in the
5538 values later, in ppc_elf_finish_dynamic_sections, but we
5539 must add the entries now so that we get the correct size for
5540 the .dynamic section. The DT_DEBUG entry is filled in by the
5541 dynamic linker and used by the debugger. */
5542#define add_dynamic_entry(TAG, VAL) \
5543 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 5544
25dbc73a 5545 if (info->executable)
7619e7c7 5546 {
25dbc73a
AM
5547 if (!add_dynamic_entry (DT_DEBUG, 0))
5548 return FALSE;
7619e7c7
AM
5549 }
5550
25dbc73a 5551 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 5552 {
25dbc73a
AM
5553 if (!add_dynamic_entry (DT_PLTGOT, 0)
5554 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5555 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5556 || !add_dynamic_entry (DT_JMPREL, 0))
5557 return FALSE;
5558 }
7619e7c7 5559
d7128ce4
AM
5560 if (htab->glink != NULL && htab->glink->size != 0)
5561 {
1fe44d79 5562 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4
AM
5563 return FALSE;
5564 }
5565
25dbc73a
AM
5566 if (relocs)
5567 {
5568 if (!add_dynamic_entry (DT_RELA, 0)
5569 || !add_dynamic_entry (DT_RELASZ, 0)
5570 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5571 return FALSE;
5572 }
7619e7c7 5573
25dbc73a
AM
5574 /* If any dynamic relocs apply to a read-only section, then we
5575 need a DT_TEXTREL entry. */
5576 if ((info->flags & DF_TEXTREL) == 0)
625af618 5577 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 5578 info);
7619e7c7 5579
25dbc73a
AM
5580 if ((info->flags & DF_TEXTREL) != 0)
5581 {
5582 if (!add_dynamic_entry (DT_TEXTREL, 0))
5583 return FALSE;
7619e7c7 5584 }
7a2b07ff
NS
5585 if (htab->is_vxworks
5586 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5587 return FALSE;
5588 }
25dbc73a
AM
5589#undef add_dynamic_entry
5590
7619e7c7
AM
5591 return TRUE;
5592}
0eb4a168
AM
5593
5594/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5595
5596static bfd_boolean
5597ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5598{
5599 if (h->plt.plist != NULL
5600 && !h->def_regular
5601 && (!h->pointer_equality_needed
5602 || !h->ref_regular_nonweak))
5603 return FALSE;
5604
5605 return _bfd_elf_hash_symbol (h);
5606}
25dbc73a
AM
5607\f
5608#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5609
5610static const int shared_stub_entry[] =
5611 {
5612 0x7c0802a6, /* mflr 0 */
5613 0x429f0005, /* bcl 20, 31, .Lxxx */
5614 0x7d6802a6, /* mflr 11 */
5615 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5616 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5617 0x7c0803a6, /* mtlr 0 */
5618 0x7d6903a6, /* mtctr 11 */
5619 0x4e800420, /* bctr */
5620 };
5621
5622static const int stub_entry[] =
5623 {
5624 0x3d600000, /* lis 11,xxx@ha */
5625 0x396b0000, /* addi 11,11,xxx@l */
5626 0x7d6903a6, /* mtctr 11 */
5627 0x4e800420, /* bctr */
5628 };
5629
5630static bfd_boolean
5631ppc_elf_relax_section (bfd *abfd,
5632 asection *isec,
5633 struct bfd_link_info *link_info,
5634 bfd_boolean *again)
5635{
5636 struct one_fixup
5637 {
5638 struct one_fixup *next;
5639 asection *tsec;
5640 bfd_vma toff;
5641 bfd_vma trampoff;
5642 };
7619e7c7 5643
25dbc73a
AM
5644 Elf_Internal_Shdr *symtab_hdr;
5645 bfd_byte *contents = NULL;
5646 Elf_Internal_Sym *isymbuf = NULL;
5647 Elf_Internal_Rela *internal_relocs = NULL;
5648 Elf_Internal_Rela *irel, *irelend;
5649 struct one_fixup *fixups = NULL;
9bc4e62b 5650 unsigned changes = 0;
d7128ce4 5651 struct ppc_elf_link_hash_table *htab;
25dbc73a 5652 bfd_size_type trampoff;
a6aa5195 5653 asection *got2;
7619e7c7 5654
25dbc73a 5655 *again = FALSE;
7619e7c7 5656
c87b5a93
AM
5657 /* Nothing to do if there are no relocations, and no need to do
5658 anything with non-alloc sections. */
5659 if ((isec->flags & SEC_ALLOC) == 0
5660 || (isec->flags & SEC_RELOC) == 0
5661 || isec->reloc_count == 0)
25dbc73a 5662 return TRUE;
7619e7c7 5663
25dbc73a
AM
5664 trampoff = (isec->size + 3) & (bfd_vma) -4;
5665 /* Space for a branch around any trampolines. */
5666 trampoff += 4;
7619e7c7 5667
0ffa91dd 5668 symtab_hdr = &elf_symtab_hdr (abfd);
7619e7c7 5669
25dbc73a
AM
5670 /* Get a copy of the native relocations. */
5671 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5672 link_info->keep_memory);
5673 if (internal_relocs == NULL)
5674 goto error_return;
7619e7c7 5675
d7128ce4 5676 htab = ppc_elf_hash_table (link_info);
a6aa5195 5677 got2 = bfd_get_section_by_name (abfd, ".got2");
7619e7c7 5678
a6aa5195 5679 irelend = internal_relocs + isec->reloc_count;
25dbc73a 5680 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 5681 {
25dbc73a
AM
5682 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5683 bfd_vma symaddr, reladdr, toff, roff;
5684 asection *tsec;
5685 struct one_fixup *f;
5686 size_t insn_offset = 0;
5687 bfd_vma max_branch_offset, val;
5688 bfd_byte *hit_addr;
5689 unsigned long t0;
5690 unsigned char sym_type;
7619e7c7 5691
25dbc73a
AM
5692 switch (r_type)
5693 {
5694 case R_PPC_REL24:
5695 case R_PPC_LOCAL24PC:
5696 case R_PPC_PLTREL24:
5697 max_branch_offset = 1 << 25;
5698 break;
7619e7c7 5699
25dbc73a
AM
5700 case R_PPC_REL14:
5701 case R_PPC_REL14_BRTAKEN:
5702 case R_PPC_REL14_BRNTAKEN:
5703 max_branch_offset = 1 << 15;
5704 break;
7619e7c7 5705
25dbc73a
AM
5706 default:
5707 continue;
5708 }
7619e7c7 5709
25dbc73a
AM
5710 /* Get the value of the symbol referred to by the reloc. */
5711 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5712 {
5713 /* A local symbol. */
5714 Elf_Internal_Sym *isym;
7fce784e 5715
25dbc73a
AM
5716 /* Read this BFD's local symbols. */
5717 if (isymbuf == NULL)
5718 {
5719 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5720 if (isymbuf == NULL)
5721 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5722 symtab_hdr->sh_info, 0,
5723 NULL, NULL, NULL);
5724 if (isymbuf == 0)
5725 goto error_return;
5726 }
5727 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5728 if (isym->st_shndx == SHN_UNDEF)
5729 continue; /* We can't do anything with undefined symbols. */
5730 else if (isym->st_shndx == SHN_ABS)
5731 tsec = bfd_abs_section_ptr;
5732 else if (isym->st_shndx == SHN_COMMON)
5733 tsec = bfd_com_section_ptr;
5734 else
5735 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 5736
25dbc73a
AM
5737 toff = isym->st_value;
5738 sym_type = ELF_ST_TYPE (isym->st_info);
5739 }
5740 else
5741 {
5742 /* Global symbol handling. */
5743 unsigned long indx;
5744 struct elf_link_hash_entry *h;
7619e7c7 5745
25dbc73a
AM
5746 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5747 h = elf_sym_hashes (abfd)[indx];
7619e7c7 5748
25dbc73a
AM
5749 while (h->root.type == bfd_link_hash_indirect
5750 || h->root.type == bfd_link_hash_warning)
5751 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 5752
a6aa5195
AM
5753 tsec = NULL;
5754 toff = 0;
25dbc73a 5755 if (r_type == R_PPC_PLTREL24
a6aa5195 5756 && htab->plt != NULL)
25dbc73a 5757 {
a6aa5195
AM
5758 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5759
5760 if (ent != NULL)
d7128ce4 5761 {
4a3dc543 5762 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
5763 {
5764 tsec = htab->glink;
5765 toff = ent->glink_offset;
5766 }
5767 else
5768 {
5769 tsec = htab->plt;
5770 toff = ent->plt.offset;
5771 }
d7128ce4 5772 }
25dbc73a 5773 }
a6aa5195
AM
5774 if (tsec != NULL)
5775 ;
25dbc73a
AM
5776 else if (h->root.type == bfd_link_hash_defined
5777 || h->root.type == bfd_link_hash_defweak)
5778 {
5779 tsec = h->root.u.def.section;
5780 toff = h->root.u.def.value;
5781 }
5782 else
5783 continue;
7619e7c7 5784
25dbc73a
AM
5785 sym_type = h->type;
5786 }
7619e7c7 5787
25dbc73a
AM
5788 /* If the branch and target are in the same section, you have
5789 no hope of adding stubs. We'll error out later should the
5790 branch overflow. */
5791 if (tsec == isec)
5792 continue;
5793
5794 /* There probably isn't any reason to handle symbols in
5795 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5796 attribute for a code section, and we are only looking at
5797 branches. However, implement it correctly here as a
5798 reference for other target relax_section functions. */
5799 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5800 {
5801 /* At this stage in linking, no SEC_MERGE symbol has been
5802 adjusted, so all references to such symbols need to be
5803 passed through _bfd_merged_section_offset. (Later, in
5804 relocate_section, all SEC_MERGE symbols *except* for
5805 section symbols have been adjusted.)
5806
5807 gas may reduce relocations against symbols in SEC_MERGE
5808 sections to a relocation against the section symbol when
5809 the original addend was zero. When the reloc is against
5810 a section symbol we should include the addend in the
5811 offset passed to _bfd_merged_section_offset, since the
5812 location of interest is the original symbol. On the
5813 other hand, an access to "sym+addend" where "sym" is not
5814 a section symbol should not include the addend; Such an
5815 access is presumed to be an offset from "sym"; The
5816 location of interest is just "sym". */
5817 if (sym_type == STT_SECTION)
5818 toff += irel->r_addend;
7619e7c7 5819
25dbc73a
AM
5820 toff = _bfd_merged_section_offset (abfd, &tsec,
5821 elf_section_data (tsec)->sec_info,
5822 toff);
7619e7c7 5823
25dbc73a
AM
5824 if (sym_type != STT_SECTION)
5825 toff += irel->r_addend;
5826 }
a6aa5195
AM
5827 /* PLTREL24 addends are special. */
5828 else if (r_type != R_PPC_PLTREL24)
25dbc73a 5829 toff += irel->r_addend;
7619e7c7 5830
7de713b9
AM
5831 /* Attempted -shared link of non-pic code loses. */
5832 if (tsec->output_section == NULL)
5833 continue;
5834
25dbc73a 5835 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7619e7c7 5836
25dbc73a
AM
5837 roff = irel->r_offset;
5838 reladdr = isec->output_section->vma + isec->output_offset + roff;
7619e7c7 5839
25dbc73a
AM
5840 /* If the branch is in range, no need to do anything. */
5841 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5842 continue;
252b5132 5843
25dbc73a
AM
5844 /* Look for an existing fixup to this address. */
5845 for (f = fixups; f ; f = f->next)
5846 if (f->tsec == tsec && f->toff == toff)
5847 break;
5848
5849 if (f == NULL)
7619e7c7 5850 {
25dbc73a
AM
5851 size_t size;
5852 unsigned long stub_rtype;
252b5132 5853
25dbc73a
AM
5854 val = trampoff - roff;
5855 if (val >= max_branch_offset)
5856 /* Oh dear, we can't reach a trampoline. Don't try to add
5857 one. We'll report an error later. */
5858 continue;
252b5132 5859
25dbc73a
AM
5860 if (link_info->shared)
5861 {
5862 size = 4 * ARRAY_SIZE (shared_stub_entry);
5863 insn_offset = 12;
5864 stub_rtype = R_PPC_RELAX32PC;
5865 }
5866 else
5867 {
5868 size = 4 * ARRAY_SIZE (stub_entry);
5869 insn_offset = 0;
5870 stub_rtype = R_PPC_RELAX32;
5871 }
dc810e39 5872
25dbc73a
AM
5873 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5874 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5875 abort ();
d7128ce4
AM
5876 if (tsec == htab->plt
5877 || tsec == htab->glink)
25dbc73a 5878 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
252b5132 5879
25dbc73a
AM
5880 /* Hijack the old relocation. Since we need two
5881 relocations for this use a "composite" reloc. */
5882 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5883 stub_rtype);
5884 irel->r_offset = trampoff + insn_offset;
e7d92e2e
AM
5885 if (r_type == R_PPC_PLTREL24)
5886 irel->r_addend = 0;
252b5132 5887
25dbc73a
AM
5888 /* Record the fixup so we don't do it again this section. */
5889 f = bfd_malloc (sizeof (*f));
5890 f->next = fixups;
5891 f->tsec = tsec;
5892 f->toff = toff;
5893 f->trampoff = trampoff;
5894 fixups = f;
252b5132 5895
25dbc73a 5896 trampoff += size;
9bc4e62b 5897 changes++;
25dbc73a
AM
5898 }
5899 else
5900 {
5901 val = f->trampoff - roff;
5902 if (val >= max_branch_offset)
5903 continue;
252b5132 5904
25dbc73a
AM
5905 /* Nop out the reloc, since we're finalizing things here. */
5906 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5907 }
252b5132 5908
25dbc73a
AM
5909 /* Get the section contents. */
5910 if (contents == NULL)
5911 {
5912 /* Get cached copy if it exists. */
5913 if (elf_section_data (isec)->this_hdr.contents != NULL)
5914 contents = elf_section_data (isec)->this_hdr.contents;
5915 else
5916 {
5917 /* Go get them off disk. */
5918 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5919 goto error_return;
5920 }
5921 }
252b5132 5922
25dbc73a
AM
5923 /* Fix up the existing branch to hit the trampoline. */
5924 hit_addr = contents + roff;
5925 switch (r_type)
5926 {
5927 case R_PPC_REL24:
5928 case R_PPC_LOCAL24PC:
5929 case R_PPC_PLTREL24:
5930 t0 = bfd_get_32 (abfd, hit_addr);
5931 t0 &= ~0x3fffffc;
5932 t0 |= val & 0x3fffffc;
5933 bfd_put_32 (abfd, t0, hit_addr);
5934 break;
252b5132 5935
25dbc73a
AM
5936 case R_PPC_REL14:
5937 case R_PPC_REL14_BRTAKEN:
5938 case R_PPC_REL14_BRNTAKEN:
5939 t0 = bfd_get_32 (abfd, hit_addr);
5940 t0 &= ~0xfffc;
5941 t0 |= val & 0xfffc;
5942 bfd_put_32 (abfd, t0, hit_addr);
5943 break;
5944 }
5945 }
252b5132 5946
25dbc73a 5947 /* Write out the trampolines. */
25dbc73a
AM
5948 if (fixups != NULL)
5949 {
5950 const int *stub;
5951 bfd_byte *dest;
5952 bfd_vma val;
5953 int i, size;
252b5132 5954
25dbc73a
AM
5955 do
5956 {
5957 struct one_fixup *f = fixups;
5958 fixups = fixups->next;
5959 free (f);
5960 }
5961 while (fixups);
252b5132 5962
515ef31d 5963 contents = bfd_realloc_or_free (contents, trampoff);
25dbc73a
AM
5964 if (contents == NULL)
5965 goto error_return;
252b5132 5966
25dbc73a
AM
5967 isec->size = (isec->size + 3) & (bfd_vma) -4;
5968 /* Branch around the trampolines. */
e7d92e2e 5969 val = B + trampoff - isec->size;
25dbc73a
AM
5970 dest = contents + isec->size;
5971 isec->size = trampoff;
5972 bfd_put_32 (abfd, val, dest);
5973 dest += 4;
252b5132 5974
25dbc73a
AM
5975 if (link_info->shared)
5976 {
5977 stub = shared_stub_entry;
5978 size = ARRAY_SIZE (shared_stub_entry);
5979 }
5980 else
5981 {
5982 stub = stub_entry;
5983 size = ARRAY_SIZE (stub_entry);
5984 }
252b5132 5985
25dbc73a
AM
5986 i = 0;
5987 while (dest < contents + trampoff)
252b5132 5988 {
25dbc73a
AM
5989 bfd_put_32 (abfd, stub[i], dest);
5990 i++;
5991 if (i == size)
5992 i = 0;
5993 dest += 4;
252b5132 5994 }
25dbc73a 5995 BFD_ASSERT (i == 0);
252b5132
RH
5996 }
5997
25dbc73a
AM
5998 if (isymbuf != NULL
5999 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 6000 {
25dbc73a
AM
6001 if (! link_info->keep_memory)
6002 free (isymbuf);
252b5132 6003 else
25dbc73a
AM
6004 {
6005 /* Cache the symbols for elf_link_input_bfd. */
6006 symtab_hdr->contents = (unsigned char *) isymbuf;
6007 }
252b5132
RH
6008 }
6009
25dbc73a
AM
6010 if (contents != NULL
6011 && elf_section_data (isec)->this_hdr.contents != contents)
6012 {
9bc4e62b 6013 if (!changes && !link_info->keep_memory)
25dbc73a
AM
6014 free (contents);
6015 else
6016 {
6017 /* Cache the section contents for elf_link_input_bfd. */
6018 elf_section_data (isec)->this_hdr.contents = contents;
6019 }
6020 }
252b5132 6021
9bc4e62b 6022 if (changes != 0)
25dbc73a 6023 {
9bc4e62b
NS
6024 /* Append sufficient NOP relocs so we can write out relocation
6025 information for the trampolines. */
6026 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6027 * sizeof (*new_relocs));
6028 unsigned ix;
6029
6030 if (!new_relocs)
6031 goto error_return;
6032 memcpy (new_relocs, internal_relocs,
6033 isec->reloc_count * sizeof (*new_relocs));
6034 for (ix = changes; ix--;)
6035 {
6036 irel = new_relocs + ix + isec->reloc_count;
6037
6038 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6039 }
6040 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 6041 free (internal_relocs);
9bc4e62b
NS
6042 elf_section_data (isec)->relocs = new_relocs;
6043 isec->reloc_count += changes;
6044 elf_section_data (isec)->rel_hdr.sh_size
6045 += changes * elf_section_data (isec)->rel_hdr.sh_entsize;
25dbc73a 6046 }
9bc4e62b
NS
6047 else if (elf_section_data (isec)->relocs != internal_relocs)
6048 free (internal_relocs);
252b5132 6049
9bc4e62b 6050 *again = changes != 0;
b34976b6 6051 return TRUE;
25dbc73a
AM
6052
6053 error_return:
6054 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6055 free (isymbuf);
6056 if (contents != NULL
6057 && elf_section_data (isec)->this_hdr.contents != contents)
6058 free (contents);
6059 if (internal_relocs != NULL
6060 && elf_section_data (isec)->relocs != internal_relocs)
6061 free (internal_relocs);
6062 return FALSE;
252b5132 6063}
252b5132 6064\f
8a696751
AM
6065/* What to do when ld finds relocations against symbols defined in
6066 discarded sections. */
6067
6068static unsigned int
6069ppc_elf_action_discarded (asection *sec)
6070{
6071 if (strcmp (".fixup", sec->name) == 0)
6072 return 0;
6073
6074 if (strcmp (".got2", sec->name) == 0)
6075 return 0;
6076
6077 return _bfd_elf_default_action_discarded (sec);
6078}
c9a2f333 6079\f
25dbc73a 6080/* Fill in the address for a pointer generated in a linker section. */
252b5132 6081
25dbc73a 6082static bfd_vma
76750a2f 6083elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
6084 elf_linker_section_t *lsect,
6085 struct elf_link_hash_entry *h,
6086 bfd_vma relocation,
2bb04cf2 6087 const Elf_Internal_Rela *rel)
25dbc73a
AM
6088{
6089 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 6090
25dbc73a 6091 BFD_ASSERT (lsect != NULL);
252b5132 6092
25dbc73a 6093 if (h != NULL)
252b5132 6094 {
25dbc73a
AM
6095 /* Handle global symbol. */
6096 struct ppc_elf_link_hash_entry *eh;
252b5132 6097
25dbc73a 6098 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
6099 BFD_ASSERT (eh->elf.def_regular);
6100 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
6101 }
6102 else
6103 {
6104 /* Handle local symbol. */
6105 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 6106
0c8d6e5c 6107 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 6108 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
6109 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6110 }
252b5132 6111
76750a2f
AM
6112 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6113 rel->r_addend,
6114 lsect);
6115 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 6116
76750a2f
AM
6117 /* Offset will always be a multiple of four, so use the bottom bit
6118 as a "written" flag. */
6119 if ((linker_section_ptr->offset & 1) == 0)
6120 {
6121 bfd_put_32 (lsect->section->owner,
6122 relocation + linker_section_ptr->addend,
6123 lsect->section->contents + linker_section_ptr->offset);
6124 linker_section_ptr->offset += 1;
252b5132
RH
6125 }
6126
25dbc73a 6127 relocation = (lsect->section->output_offset
76750a2f 6128 + linker_section_ptr->offset - 1
c9a2f333 6129 - 0x8000);
252b5132 6130
25dbc73a
AM
6131#ifdef DEBUG
6132 fprintf (stderr,
6133 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6134 lsect->name, (long) relocation, (long) relocation);
6135#endif
252b5132 6136
25dbc73a
AM
6137 /* Subtract out the addend, because it will get added back in by the normal
6138 processing. */
6139 return relocation - linker_section_ptr->addend;
252b5132 6140}
25dbc73a 6141
252b5132
RH
6142/* The RELOCATE_SECTION function is called by the ELF backend linker
6143 to handle the relocations for a section.
6144
6145 The relocs are always passed as Rela structures; if the section
6146 actually uses Rel structures, the r_addend field will always be
6147 zero.
6148
6149 This function is responsible for adjust the section contents as
6150 necessary, and (if using Rela relocs and generating a
1049f94e 6151 relocatable output file) adjusting the reloc addend as
252b5132
RH
6152 necessary.
6153
6154 This function does not have to worry about setting the reloc
6155 address or the reloc symbol index.
6156
6157 LOCAL_SYMS is a pointer to the swapped in local symbols.
6158
6159 LOCAL_SECTIONS is an array giving the section in the input file
6160 corresponding to the st_shndx field of each local symbol.
6161
6162 The global hash table entry for the global symbols can be found
6163 via elf_sym_hashes (input_bfd).
6164
1049f94e 6165 When generating relocatable output, this function must handle
252b5132
RH
6166 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6167 going to be the section symbol corresponding to the output
6168 section, which means that the addend must be adjusted
6169 accordingly. */
6170
b34976b6 6171static bfd_boolean
55fd94b0
AM
6172ppc_elf_relocate_section (bfd *output_bfd,
6173 struct bfd_link_info *info,
6174 bfd *input_bfd,
6175 asection *input_section,
6176 bfd_byte *contents,
6177 Elf_Internal_Rela *relocs,
6178 Elf_Internal_Sym *local_syms,
6179 asection **local_sections)
252b5132 6180{
7619e7c7
AM
6181 Elf_Internal_Shdr *symtab_hdr;
6182 struct elf_link_hash_entry **sym_hashes;
6183 struct ppc_elf_link_hash_table *htab;
6184 Elf_Internal_Rela *rel;
6185 Elf_Internal_Rela *relend;
6186 Elf_Internal_Rela outrel;
6187 bfd_byte *loc;
a6aa5195 6188 asection *got2, *sreloc = NULL;
252b5132 6189 bfd_vma *local_got_offsets;
b34976b6 6190 bfd_boolean ret = TRUE;
4fe5ca5b 6191 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 6192 bfd_boolean is_vxworks_tls;
b34976b6 6193
252b5132 6194#ifdef DEBUG
d003868e
AM
6195 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6196 "%ld relocations%s",
6197 input_bfd, input_section,
6198 (long) input_section->reloc_count,
6199 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH
6200#endif
6201
a6aa5195
AM
6202 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6203
e47cd125 6204 /* Initialize howto table if not already done. */
8da6118f 6205 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
6206 ppc_elf_howto_init ();
6207
7619e7c7 6208 htab = ppc_elf_hash_table (info);
252b5132 6209 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 6210 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 6211 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
6212 /* We have to handle relocations in vxworks .tls_vars sections
6213 specially, because the dynamic loader is 'weird'. */
6214 is_vxworks_tls = (htab->is_vxworks && info->shared
6215 && !strcmp (input_section->output_section->name,
6216 ".tls_vars"));
7619e7c7
AM
6217 rel = relocs;
6218 relend = relocs + input_section->reloc_count;
252b5132
RH
6219 for (; rel < relend; rel++)
6220 {
7619e7c7
AM
6221 enum elf_ppc_reloc_type r_type;
6222 bfd_vma addend;
6223 bfd_reloc_status_type r;
6224 Elf_Internal_Sym *sym;
6225 asection *sec;
6226 struct elf_link_hash_entry *h;
6227 const char *sym_name;
252b5132
RH
6228 reloc_howto_type *howto;
6229 unsigned long r_symndx;
6230 bfd_vma relocation;
7619e7c7 6231 bfd_vma branch_bit, insn, from;
7619e7c7
AM
6232 bfd_boolean unresolved_reloc;
6233 bfd_boolean warned;
6234 unsigned int tls_type, tls_mask, tls_gd;
6235
55fd94b0
AM
6236 r_type = ELF32_R_TYPE (rel->r_info);
6237 sym = NULL;
6238 sec = NULL;
6239 h = NULL;
7619e7c7
AM
6240 unresolved_reloc = FALSE;
6241 warned = FALSE;
252b5132 6242 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 6243
252b5132
RH
6244 if (r_symndx < symtab_hdr->sh_info)
6245 {
6246 sym = local_syms + r_symndx;
6247 sec = local_sections[r_symndx];
26c61ae5 6248 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 6249
8517fae7 6250 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
6251 }
6252 else
6253 {
b2a8e766
AM
6254 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6255 r_symndx, symtab_hdr, sym_hashes,
6256 h, sec, relocation,
6257 unresolved_reloc, warned);
9abc968f 6258
252b5132 6259 sym_name = h->root.root.string;
7619e7c7
AM
6260 }
6261
ab96bf03
AM
6262 if (sec != NULL && elf_discarded_section (sec))
6263 {
6264 /* For relocs against symbols from removed linkonce sections,
6265 or sections discarded by a linker script, we just want the
6266 section contents zeroed. Avoid any special processing. */
6267 howto = NULL;
6268 if (r_type < R_PPC_max)
6269 howto = ppc_elf_howto_table[r_type];
6270 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6271 rel->r_info = 0;
6272 rel->r_addend = 0;
6273 continue;
6274 }
6275
6276 if (info->relocatable)
6277 {
6278 if (got2 != NULL
6279 && r_type == R_PPC_PLTREL24
6280 && rel->r_addend >= 32768)
6281 {
6282 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6283 addend specifies the GOT pointer offset within .got2. */
6284 rel->r_addend += got2->output_offset;
6285 }
6286 continue;
6287 }
6288
7619e7c7
AM
6289 /* TLS optimizations. Replace instruction sequences and relocs
6290 based on information we collected in tls_optimize. We edit
6291 RELOCS so that --emit-relocs will output something sensible
6292 for the final instruction stream. */
6293 tls_mask = 0;
6294 tls_gd = 0;
727fc41e
AM
6295 if (h != NULL)
6296 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6297 else if (local_got_offsets != NULL)
7619e7c7 6298 {
727fc41e
AM
6299 char *lgot_masks;
6300 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
6301 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM
6302 }
6303
6304 /* Ensure reloc mapping code below stays sane. */
6305 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6306 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6307 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6308 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6309 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6310 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6311 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6312 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6313 abort ();
6314 switch (r_type)
6315 {
6316 default:
6317 break;
6318
6319 case R_PPC_GOT_TPREL16:
6320 case R_PPC_GOT_TPREL16_LO:
6321 if (tls_mask != 0
6322 && (tls_mask & TLS_TPREL) == 0)
6323 {
6324 bfd_vma insn;
4fe5ca5b 6325 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7619e7c7
AM
6326 insn &= 31 << 21;
6327 insn |= 0x3c020000; /* addis 0,2,0 */
4fe5ca5b 6328 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7619e7c7
AM
6329 r_type = R_PPC_TPREL16_HA;
6330 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6331 }
6332 break;
6333
6334 case R_PPC_TLS:
6335 if (tls_mask != 0
6336 && (tls_mask & TLS_TPREL) == 0)
6337 {
6338 bfd_vma insn, rtra;
6339 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6340 if ((insn & ((31 << 26) | (31 << 11)))
6341 == ((31 << 26) | (2 << 11)))
6342 rtra = insn & ((1 << 26) - (1 << 16));
6343 else if ((insn & ((31 << 26) | (31 << 16)))
6344 == ((31 << 26) | (2 << 16)))
6345 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6346 else
6347 abort ();
6348 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6349 /* add -> addi. */
6350 insn = 14 << 26;
6351 else if ((insn & (31 << 1)) == 23 << 1
6352 && ((insn & (31 << 6)) < 14 << 6
6353 || ((insn & (31 << 6)) >= 16 << 6
6354 && (insn & (31 << 6)) < 24 << 6)))
6355 /* load and store indexed -> dform. */
6356 insn = (32 | ((insn >> 6) & 31)) << 26;
6357 else if ((insn & (31 << 1)) == 21 << 1
6358 && (insn & (0x1a << 6)) == 0)
6359 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6360 insn = (((58 | ((insn >> 6) & 4)) << 26)
6361 | ((insn >> 6) & 1));
6362 else if ((insn & (31 << 1)) == 21 << 1
6363 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6364 /* lwax -> lwa. */
6365 insn = (58 << 26) | 2;
6366 else
6367 abort ();
6368 insn |= rtra;
6369 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6370 r_type = R_PPC_TPREL16_LO;
6371 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 6372
7619e7c7 6373 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
6374 PPC_TPREL16_LO which is at low-order half-word. */
6375 rel->r_offset += d_offset;
7619e7c7
AM
6376 }
6377 break;
6378
6379 case R_PPC_GOT_TLSGD16_HI:
6380 case R_PPC_GOT_TLSGD16_HA:
6381 tls_gd = TLS_TPRELGD;
6382 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6383 goto tls_gdld_hi;
6384 break;
6385
6386 case R_PPC_GOT_TLSLD16_HI:
6387 case R_PPC_GOT_TLSLD16_HA:
6388 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6389 {
6390 tls_gdld_hi:
6391 if ((tls_mask & tls_gd) != 0)
6392 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6393 + R_PPC_GOT_TPREL16);
6394 else
6395 {
6396 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 6397 rel->r_offset -= d_offset;
7619e7c7
AM
6398 r_type = R_PPC_NONE;
6399 }
6400 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6401 }
6402 break;
6403
6404 case R_PPC_GOT_TLSGD16:
6405 case R_PPC_GOT_TLSGD16_LO:
6406 tls_gd = TLS_TPRELGD;
6407 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 6408 goto tls_ldgd_opt;
7619e7c7
AM
6409 break;
6410
6411 case R_PPC_GOT_TLSLD16:
6412 case R_PPC_GOT_TLSLD16_LO:
6413 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6414 {
3a71aa26 6415 unsigned int insn1, insn2;
b7fcf6f6 6416 bfd_vma offset;
7619e7c7 6417
b7fcf6f6 6418 tls_ldgd_opt:
727fc41e
AM
6419 offset = (bfd_vma) -1;
6420 /* If not using the newer R_PPC_TLSGD/LD to mark
6421 __tls_get_addr calls, we must trust that the call
6422 stays with its arg setup insns, ie. that the next
6423 reloc is the __tls_get_addr call associated with
6424 the current reloc. Edit both insns. */
6425 if (input_section->has_tls_get_addr_call
6426 && rel + 1 < relend
6427 && branch_reloc_hash_match (input_bfd, rel + 1,
6428 htab->tls_get_addr))
6429 offset = rel[1].r_offset;
b7fcf6f6
AM
6430 if ((tls_mask & tls_gd) != 0)
6431 {
6432 /* IE */
3a71aa26
AM
6433 insn1 = bfd_get_32 (output_bfd,
6434 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
6435 insn1 &= (1 << 26) - 1;
6436 insn1 |= 32 << 26; /* lwz */
727fc41e
AM
6437 if (offset != (bfd_vma) -1)
6438 {
6439 rel[1].r_info
6440 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6441 R_PPC_NONE);
6442 insn2 = 0x7c631214; /* add 3,3,2 */
6443 bfd_put_32 (output_bfd, insn2, contents + offset);
6444 }
b7fcf6f6
AM
6445 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6446 + R_PPC_GOT_TPREL16);
6447 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6448 }
6449 else
6450 {
6451 /* LE */
6452 insn1 = 0x3c620000; /* addis 3,2,0 */
7619e7c7
AM
6453 if (tls_gd == 0)
6454 {
b7fcf6f6 6455 /* Was an LD reloc. */
1d483afe
AM
6456 for (r_symndx = 0;
6457 r_symndx < symtab_hdr->sh_info;
6458 r_symndx++)
6459 if (local_sections[r_symndx] == sec)
6460 break;
6461 if (r_symndx >= symtab_hdr->sh_info)
6462 r_symndx = 0;
b7fcf6f6 6463 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
1d483afe
AM
6464 if (r_symndx != 0)
6465 rel->r_addend -= (local_syms[r_symndx].st_value
6466 + sec->output_offset
6467 + sec->output_section->vma);
7619e7c7 6468 }
b7fcf6f6
AM
6469 r_type = R_PPC_TPREL16_HA;
6470 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM
6471 if (offset != (bfd_vma) -1)
6472 {
6473 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6474 rel[1].r_offset = offset + d_offset;
6475 rel[1].r_addend = rel->r_addend;
6476 insn2 = 0x38630000; /* addi 3,3,0 */
6477 bfd_put_32 (output_bfd, insn2, contents + offset);
6478 }
b7fcf6f6
AM
6479 }
6480 bfd_put_32 (output_bfd, insn1,
6481 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
6482 if (tls_gd == 0)
6483 {
6484 /* We changed the symbol on an LD reloc. Start over
6485 in order to get h, sym, sec etc. right. */
6486 rel--;
6487 continue;
7619e7c7 6488 }
252b5132 6489 }
7619e7c7 6490 break;
727fc41e
AM
6491
6492 case R_PPC_TLSGD:
6493 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6494 {
6495 unsigned int insn2;
6496 bfd_vma offset = rel->r_offset;
6497
6498 if ((tls_mask & TLS_TPRELGD) != 0)
6499 {
6500 /* IE */
6501 r_type = R_PPC_NONE;
6502 insn2 = 0x7c631214; /* add 3,3,2 */
6503 }
6504 else
6505 {
6506 /* LE */
6507 r_type = R_PPC_TPREL16_LO;
6508 rel->r_offset += d_offset;
6509 insn2 = 0x38630000; /* addi 3,3,0 */
6510 }
6511 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6512 bfd_put_32 (output_bfd, insn2, contents + offset);
6513 /* Zap the reloc on the _tls_get_addr call too. */
6514 BFD_ASSERT (offset == rel[1].r_offset);
6515 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6516 R_PPC_NONE);
6517 }
6518 break;
6519
6520 case R_PPC_TLSLD:
6521 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6522 {
6523 unsigned int insn2;
6524
6525 for (r_symndx = 0;
6526 r_symndx < symtab_hdr->sh_info;
6527 r_symndx++)
6528 if (local_sections[r_symndx] == sec)
6529 break;
6530 if (r_symndx >= symtab_hdr->sh_info)
6531 r_symndx = 0;
6532 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6533 if (r_symndx != 0)
6534 rel->r_addend -= (local_syms[r_symndx].st_value
6535 + sec->output_offset
6536 + sec->output_section->vma);
6537
6538 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6539 rel->r_offset += d_offset;
6540 insn2 = 0x38630000; /* addi 3,3,0 */
6541 bfd_put_32 (output_bfd, insn2,
6542 contents + rel->r_offset - d_offset);
6543 /* Zap the reloc on the _tls_get_addr call too. */
6544 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
6545 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6546 R_PPC_NONE);
6547 rel--;
6548 continue;
6549 }
6550 break;
7619e7c7
AM
6551 }
6552
6553 /* Handle other relocations that tweak non-addend part of insn. */
6554 branch_bit = 0;
6555 switch (r_type)
6556 {
6557 default:
6558 break;
6559
6560 /* Branch taken prediction relocations. */
6561 case R_PPC_ADDR14_BRTAKEN:
6562 case R_PPC_REL14_BRTAKEN:
6563 branch_bit = BRANCH_PREDICT_BIT;
6564 /* Fall thru */
6565
4cc11e76 6566 /* Branch not taken prediction relocations. */
7619e7c7
AM
6567 case R_PPC_ADDR14_BRNTAKEN:
6568 case R_PPC_REL14_BRNTAKEN:
6569 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6570 insn &= ~BRANCH_PREDICT_BIT;
6571 insn |= branch_bit;
6572
6573 from = (rel->r_offset
6574 + input_section->output_offset
6575 + input_section->output_section->vma);
6576
6577 /* Invert 'y' bit if not the default. */
6578 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6579 insn ^= BRANCH_PREDICT_BIT;
6580
6581 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6582 break;
252b5132
RH
6583 }
6584
7619e7c7
AM
6585 addend = rel->r_addend;
6586 tls_type = 0;
6587 howto = NULL;
55fd94b0
AM
6588 if (r_type < R_PPC_max)
6589 howto = ppc_elf_howto_table[r_type];
7619e7c7 6590 switch (r_type)
252b5132
RH
6591 {
6592 default:
7619e7c7 6593 (*_bfd_error_handler)
d003868e
AM
6594 (_("%B: unknown relocation type %d for symbol %s"),
6595 input_bfd, (int) r_type, sym_name);
252b5132
RH
6596
6597 bfd_set_error (bfd_error_bad_value);
b34976b6 6598 ret = FALSE;
252b5132
RH
6599 continue;
6600
7619e7c7
AM
6601 case R_PPC_NONE:
6602 case R_PPC_TLS:
727fc41e
AM
6603 case R_PPC_TLSGD:
6604 case R_PPC_TLSLD:
7619e7c7
AM
6605 case R_PPC_EMB_MRKREF:
6606 case R_PPC_GNU_VTINHERIT:
6607 case R_PPC_GNU_VTENTRY:
7595d193
L
6608 continue;
6609
7619e7c7
AM
6610 /* GOT16 relocations. Like an ADDR16 using the symbol's
6611 address in the GOT as relocation value instead of the
6612 symbol's value itself. Also, create a GOT entry for the
6613 symbol and put the symbol value there. */
6614 case R_PPC_GOT_TLSGD16:
6615 case R_PPC_GOT_TLSGD16_LO:
6616 case R_PPC_GOT_TLSGD16_HI:
6617 case R_PPC_GOT_TLSGD16_HA:
6618 tls_type = TLS_TLS | TLS_GD;
6619 goto dogot;
6620
6621 case R_PPC_GOT_TLSLD16:
6622 case R_PPC_GOT_TLSLD16_LO:
6623 case R_PPC_GOT_TLSLD16_HI:
6624 case R_PPC_GOT_TLSLD16_HA:
6625 tls_type = TLS_TLS | TLS_LD;
6626 goto dogot;
6627
6628 case R_PPC_GOT_TPREL16:
6629 case R_PPC_GOT_TPREL16_LO:
6630 case R_PPC_GOT_TPREL16_HI:
6631 case R_PPC_GOT_TPREL16_HA:
6632 tls_type = TLS_TLS | TLS_TPREL;
6633 goto dogot;
6634
6635 case R_PPC_GOT_DTPREL16:
6636 case R_PPC_GOT_DTPREL16_LO:
6637 case R_PPC_GOT_DTPREL16_HI:
6638 case R_PPC_GOT_DTPREL16_HA:
6639 tls_type = TLS_TLS | TLS_DTPREL;
6640 goto dogot;
6641
6642 case R_PPC_GOT16:
6643 case R_PPC_GOT16_LO:
6644 case R_PPC_GOT16_HI:
6645 case R_PPC_GOT16_HA:
727fc41e 6646 tls_mask = 0;
7619e7c7
AM
6647 dogot:
6648 {
6649 /* Relocation is to the entry for this symbol in the global
6650 offset table. */
6651 bfd_vma off;
6652 bfd_vma *offp;
6653 unsigned long indx;
6654
6655 if (htab->got == NULL)
6656 abort ();
6657
6658 indx = 0;
6659 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 6660 && (h == NULL
f5385ebf 6661 || !h->def_dynamic))
7619e7c7
AM
6662 offp = &htab->tlsld_got.offset;
6663 else if (h != NULL)
6664 {
6665 bfd_boolean dyn;
6666 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 6667 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM
6668 || (info->shared
6669 && SYMBOL_REFERENCES_LOCAL (info, h)))
6670 /* This is actually a static link, or it is a
6671 -Bsymbolic link and the symbol is defined
6672 locally, or the symbol was forced to be local
6673 because of a version file. */
6674 ;
6675 else
6676 {
6677 indx = h->dynindx;
6678 unresolved_reloc = FALSE;
6679 }
6680 offp = &h->got.offset;
6681 }
6682 else
6683 {
6684 if (local_got_offsets == NULL)
6685 abort ();
6686 offp = &local_got_offsets[r_symndx];
6687 }
6688
6689 /* The offset must always be a multiple of 4. We use the
6690 least significant bit to record whether we have already
6691 processed this entry. */
6692 off = *offp;
6693 if ((off & 1) != 0)
6694 off &= ~1;
6695 else
6696 {
70bccea4
AM
6697 unsigned int tls_m = (tls_mask
6698 & (TLS_LD | TLS_GD | TLS_DTPREL
6699 | TLS_TPREL | TLS_TPRELGD));
6700
6701 if (offp == &htab->tlsld_got.offset)
6702 tls_m = TLS_LD;
6703 else if (h == NULL
f5385ebf 6704 || !h->def_dynamic)
70bccea4
AM
6705 tls_m &= ~TLS_LD;
6706
6707 /* We might have multiple got entries for this sym.
6708 Initialize them all. */
6709 do
7619e7c7 6710 {
70bccea4
AM
6711 int tls_ty = 0;
6712
6713 if ((tls_m & TLS_LD) != 0)
7619e7c7 6714 {
70bccea4
AM
6715 tls_ty = TLS_TLS | TLS_LD;
6716 tls_m &= ~TLS_LD;
6717 }
6718 else if ((tls_m & TLS_GD) != 0)
6719 {
6720 tls_ty = TLS_TLS | TLS_GD;
6721 tls_m &= ~TLS_GD;
6722 }
6723 else if ((tls_m & TLS_DTPREL) != 0)
6724 {
6725 tls_ty = TLS_TLS | TLS_DTPREL;
6726 tls_m &= ~TLS_DTPREL;
6727 }
6728 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6729 {
6730 tls_ty = TLS_TLS | TLS_TPREL;
6731 tls_m = 0;
7619e7c7 6732 }
7619e7c7 6733
70bccea4 6734 /* Generate relocs for the dynamic linker. */
4e795f50 6735 if ((info->shared || indx != 0)
d6e14abc
AM
6736 && (offp == &htab->tlsld_got.offset
6737 || h == NULL
4e795f50
AM
6738 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6739 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 6740 {
70bccea4
AM
6741 outrel.r_offset = (htab->got->output_section->vma
6742 + htab->got->output_offset
6743 + off);
e515b051 6744 outrel.r_addend = 0;
70bccea4
AM
6745 if (tls_ty & (TLS_LD | TLS_GD))
6746 {
6747 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
6748 if (tls_ty == (TLS_TLS | TLS_GD))
6749 {
6750 loc = htab->relgot->contents;
6751 loc += (htab->relgot->reloc_count++
6752 * sizeof (Elf32_External_Rela));
6753 bfd_elf32_swap_reloca_out (output_bfd,
6754 &outrel, loc);
e515b051 6755 outrel.r_offset += 4;
70bccea4
AM
6756 outrel.r_info
6757 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
6758 }
6759 }
6760 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6761 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6762 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6763 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6764 else if (indx == 0)
6765 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6766 else
6767 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
d6e14abc 6768 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM
6769 {
6770 outrel.r_addend += relocation;
6771 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 6772 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 6773 }
70bccea4
AM
6774 loc = htab->relgot->contents;
6775 loc += (htab->relgot->reloc_count++
6776 * sizeof (Elf32_External_Rela));
6777 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
6778 }
6779
70bccea4
AM
6780 /* Init the .got section contents if we're not
6781 emitting a reloc. */
6782 else
7619e7c7 6783 {
70bccea4
AM
6784 bfd_vma value = relocation;
6785
7b609f53
AM
6786 if (tls_ty == (TLS_TLS | TLS_LD))
6787 value = 1;
6788 else if (tls_ty != 0)
70bccea4 6789 {
e1918d23 6790 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 6791 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 6792 value += DTP_OFFSET - TP_OFFSET;
70bccea4 6793
7b609f53
AM
6794 if (tls_ty == (TLS_TLS | TLS_GD))
6795 {
6796 bfd_put_32 (output_bfd, value,
6797 htab->got->contents + off + 4);
6798 value = 1;
6799 }
70bccea4 6800 }
70bccea4
AM
6801 bfd_put_32 (output_bfd, value,
6802 htab->got->contents + off);
7619e7c7 6803 }
70bccea4
AM
6804
6805 off += 4;
6806 if (tls_ty & (TLS_LD | TLS_GD))
6807 off += 4;
7619e7c7 6808 }
70bccea4
AM
6809 while (tls_m != 0);
6810
6811 off = *offp;
6812 *offp = off | 1;
7619e7c7
AM
6813 }
6814
6815 if (off >= (bfd_vma) -2)
6816 abort ();
6817
70bccea4
AM
6818 if ((tls_type & TLS_TLS) != 0)
6819 {
6820 if (tls_type != (TLS_TLS | TLS_LD))
6821 {
6822 if ((tls_mask & TLS_LD) != 0
6823 && !(h == NULL
f5385ebf 6824 || !h->def_dynamic))
70bccea4
AM
6825 off += 8;
6826 if (tls_type != (TLS_TLS | TLS_GD))
6827 {
6828 if ((tls_mask & TLS_GD) != 0)
6829 off += 8;
6830 if (tls_type != (TLS_TLS | TLS_DTPREL))
6831 {
6832 if ((tls_mask & TLS_DTPREL) != 0)
6833 off += 4;
6834 }
6835 }
6836 }
6837 }
6838
e87d4038
AM
6839 relocation = (htab->got->output_section->vma
6840 + htab->got->output_offset
6841 + off
6842 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
6843
6844 /* Addends on got relocations don't make much sense.
6845 x+off@got is actually x@got+off, and since the got is
6846 generated by a hash table traversal, the value in the
6847 got at entry m+n bears little relation to the entry m. */
6848 if (addend != 0)
6849 (*_bfd_error_handler)
d003868e
AM
6850 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6851 input_bfd,
6852 input_section,
7619e7c7 6853 (long) rel->r_offset,
7b609f53 6854 howto->name,
7619e7c7
AM
6855 sym_name);
6856 }
70bccea4 6857 break;
7619e7c7 6858
252b5132 6859 /* Relocations that need no special processing. */
7619e7c7 6860 case R_PPC_LOCAL24PC:
252b5132
RH
6861 /* It makes no sense to point a local relocation
6862 at a symbol not in this object. */
7b609f53 6863 if (unresolved_reloc)
252b5132 6864 {
464e1740
ILT
6865 if (! (*info->callbacks->undefined_symbol) (info,
6866 h->root.root.string,
6867 input_bfd,
6868 input_section,
5cc7c785 6869 rel->r_offset,
b34976b6
AM
6870 TRUE))
6871 return FALSE;
252b5132
RH
6872 continue;
6873 }
6874 break;
6875
7619e7c7
AM
6876 case R_PPC_DTPREL16:
6877 case R_PPC_DTPREL16_LO:
6878 case R_PPC_DTPREL16_HI:
6879 case R_PPC_DTPREL16_HA:
e1918d23 6880 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
6881 break;
6882
70bccea4
AM
6883 /* Relocations that may need to be propagated if this is a shared
6884 object. */
7619e7c7
AM
6885 case R_PPC_TPREL16:
6886 case R_PPC_TPREL16_LO:
6887 case R_PPC_TPREL16_HI:
6888 case R_PPC_TPREL16_HA:
e1918d23 6889 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
6890 /* The TPREL16 relocs shouldn't really be used in shared
6891 libs as they will result in DT_TEXTREL being set, but
6892 support them anyway. */
6893 goto dodyn;
6894
6895 case R_PPC_TPREL32:
e1918d23 6896 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
6897 goto dodyn;
6898
6899 case R_PPC_DTPREL32:
e1918d23 6900 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
6901 goto dodyn;
6902
e515b051
AM
6903 case R_PPC_DTPMOD32:
6904 relocation = 1;
6905 addend = 0;
6906 goto dodyn;
6907
d7128ce4
AM
6908 case R_PPC_REL16:
6909 case R_PPC_REL16_LO:
6910 case R_PPC_REL16_HI:
6911 case R_PPC_REL16_HA:
6912 break;
6913
7619e7c7 6914 case R_PPC_REL32:
625af618
AM
6915 if (h == NULL || h == htab->elf.hgot)
6916 break;
6917 /* fall through */
6918
6919 case R_PPC_ADDR32:
6920 case R_PPC_ADDR16:
6921 case R_PPC_ADDR16_LO:
6922 case R_PPC_ADDR16_HI:
6923 case R_PPC_ADDR16_HA:
6924 case R_PPC_UADDR32:
6925 case R_PPC_UADDR16:
6926 goto dodyn;
6927
6928 case R_PPC_REL24:
7619e7c7
AM
6929 case R_PPC_REL14:
6930 case R_PPC_REL14_BRTAKEN:
6931 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
6932 /* If these relocations are not to a named symbol, they can be
6933 handled right here, no need to bother the dynamic linker. */
89200bf8 6934 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 6935 || h == htab->elf.hgot)
252b5132 6936 break;
70bccea4 6937 /* fall through */
252b5132 6938
7619e7c7 6939 case R_PPC_ADDR24:
7619e7c7
AM
6940 case R_PPC_ADDR14:
6941 case R_PPC_ADDR14_BRTAKEN:
6942 case R_PPC_ADDR14_BRNTAKEN:
625af618
AM
6943 if (h != NULL && !info->shared)
6944 break;
6945 /* fall through */
6946
7619e7c7 6947 dodyn:
3348747a
NS
6948 if ((input_section->flags & SEC_ALLOC) == 0
6949 || is_vxworks_tls)
c87b5a93 6950 break;
c87b5a93 6951
ee05f2fe 6952 if ((info->shared
89200bf8
AM
6953 && !(h != NULL
6954 && ((h->root.type == bfd_link_hash_undefined
6955 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6956 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6957 || (h->root.type == bfd_link_hash_undefweak
6958 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 6959 && (must_be_dyn_reloc (info, r_type)
f6c52c13 6960 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM
6961 || (ELIMINATE_COPY_RELOCS
6962 && !info->shared
ee05f2fe
AM
6963 && h != NULL
6964 && h->dynindx != -1
f5385ebf 6965 && !h->non_got_ref
f5385ebf 6966 && !h->def_regular))
252b5132 6967 {
0bb2d96a 6968 int skip;
252b5132
RH
6969
6970#ifdef DEBUG
55fd94b0
AM
6971 fprintf (stderr, "ppc_elf_relocate_section needs to "
6972 "create relocation for %s\n",
70bccea4
AM
6973 (h && h->root.root.string
6974 ? h->root.root.string : "<unknown>"));
252b5132
RH
6975#endif
6976
6977 /* When generating a shared object, these relocations
70bccea4
AM
6978 are copied into the output file to be resolved at run
6979 time. */
252b5132
RH
6980 if (sreloc == NULL)
6981 {
83bac4b0
NC
6982 sreloc = _bfd_elf_get_dynamic_reloc_section
6983 (input_bfd, input_section, /*rela?*/ TRUE);
6984 if (sreloc == NULL)
b34976b6 6985 return FALSE;
252b5132
RH
6986 }
6987
0bb2d96a 6988 skip = 0;
c629eae0
JJ
6989 outrel.r_offset =
6990 _bfd_elf_section_offset (output_bfd, info, input_section,
6991 rel->r_offset);
0bb2d96a
JJ
6992 if (outrel.r_offset == (bfd_vma) -1
6993 || outrel.r_offset == (bfd_vma) -2)
6994 skip = (int) outrel.r_offset;
252b5132
RH
6995 outrel.r_offset += (input_section->output_section->vma
6996 + input_section->output_offset);
6997
6998 if (skip)
6999 memset (&outrel, 0, sizeof outrel);
89200bf8
AM
7000 else if ((h != NULL
7001 && (h->root.type == bfd_link_hash_undefined
7002 || h->root.type == bfd_link_hash_undefweak))
7003 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 7004 {
7619e7c7 7005 unresolved_reloc = FALSE;
252b5132
RH
7006 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7007 outrel.r_addend = rel->r_addend;
7008 }
7009 else
7010 {
47388f4c
AM
7011 outrel.r_addend = relocation + rel->r_addend;
7012
252b5132 7013 if (r_type == R_PPC_ADDR32)
47388f4c 7014 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
7015 else
7016 {
89200bf8 7017 long indx = 0;
252b5132 7018
1d483afe 7019 if (r_symndx == 0 || bfd_is_abs_section (sec))
89200bf8 7020 ;
252b5132
RH
7021 else if (sec == NULL || sec->owner == NULL)
7022 {
7023 bfd_set_error (bfd_error_bad_value);
89200bf8 7024 ret = FALSE;
252b5132
RH
7025 }
7026 else
7027 {
7028 asection *osec;
7029
47388f4c
AM
7030 /* We are turning this relocation into one
7031 against a section symbol. It would be
7032 proper to subtract the symbol's value,
7033 osec->vma, from the emitted reloc addend,
7034 but ld.so expects buggy relocs. */
252b5132
RH
7035 osec = sec->output_section;
7036 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
7037 if (indx == 0)
7038 {
7039 osec = htab->elf.text_index_section;
7040 indx = elf_section_data (osec)->dynindx;
7041 }
7042 BFD_ASSERT (indx != 0);
252b5132 7043#ifdef DEBUG
74541ad4 7044 if (indx == 0)
e460dd0d 7045 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
7046 indx, osec->name, osec->flags,
7047 h->root.root.string);
252b5132
RH
7048#endif
7049 }
7050
7051 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH
7052 }
7053 }
7054
947216bf
AM
7055 loc = sreloc->contents;
7056 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7057 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 7058
2243deae 7059 if (skip == -1)
252b5132 7060 continue;
2243deae
L
7061
7062 /* This reloc will be computed at runtime. We clear the memory
7063 so that it contains predictable value. */
7064 if (! skip
7065 && ((input_section->flags & SEC_ALLOC) != 0
7066 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7067 {
7068 relocation = howto->pc_relative ? outrel.r_offset : 0;
7069 addend = 0;
7070 break;
7071 }
252b5132 7072 }
252b5132
RH
7073 break;
7074
b4a38de6
AM
7075 case R_PPC_RELAX32PC_PLT:
7076 case R_PPC_RELAX32_PLT:
a6aa5195
AM
7077 {
7078 struct plt_entry *ent = find_plt_ent (h, got2, addend);
7079
4a3dc543 7080 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
7081 relocation = (htab->glink->output_section->vma
7082 + htab->glink->output_offset
7083 + ent->glink_offset);
7084 else
7085 relocation = (htab->plt->output_section->vma
7086 + htab->plt->output_offset
7087 + ent->plt.offset);
a6aa5195 7088 }
b4a38de6
AM
7089 if (r_type == R_PPC_RELAX32_PLT)
7090 goto relax32;
7091 /* Fall thru */
7092
f31a141e
AM
7093 case R_PPC_RELAX32PC:
7094 relocation -= (input_section->output_section->vma
7095 + input_section->output_offset
7096 + rel->r_offset - 4);
7097 /* Fall thru */
b4a38de6 7098
deaaf2f3 7099 case R_PPC_RELAX32:
b4a38de6 7100 relax32:
9abc968f
AM
7101 {
7102 unsigned long t0;
7103 unsigned long t1;
7104
7105 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7106 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7107
7108 /* We're clearing the bits for R_PPC_ADDR16_HA
7109 and R_PPC_ADDR16_LO here. */
7110 t0 &= ~0xffff;
7111 t1 &= ~0xffff;
7112
7113 /* t0 is HA, t1 is LO */
7114 relocation += addend;
7115 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7116 t1 |= relocation & 0xffff;
7117
7118 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7119 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
9bc4e62b
NS
7120
7121 /* Rewrite the reloc and convert one of the trailing nop
7122 relocs to describe this relocation. */
7123 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7124 /* The relocs are at the bottom 2 bytes */
7125 rel[0].r_offset += 2;
7126 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7127 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7128 rel[1].r_offset += 4;
7129 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7130 rel++;
9abc968f 7131 }
8517fae7 7132 continue;
deaaf2f3 7133
70bccea4 7134 /* Indirect .sdata relocation. */
7619e7c7 7135 case R_PPC_EMB_SDAI16:
c9a2f333 7136 BFD_ASSERT (htab->sdata[0].section != NULL);
7619e7c7 7137 relocation
76750a2f
AM
7138 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7139 h, relocation, rel);
252b5132
RH
7140 break;
7141
70bccea4 7142 /* Indirect .sdata2 relocation. */
7619e7c7 7143 case R_PPC_EMB_SDA2I16:
c9a2f333 7144 BFD_ASSERT (htab->sdata[1].section != NULL);
7619e7c7 7145 relocation
76750a2f
AM
7146 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7147 h, relocation, rel);
252b5132
RH
7148 break;
7149
70bccea4
AM
7150 /* Handle the TOC16 reloc. We want to use the offset within the .got
7151 section, not the actual VMA. This is appropriate when generating
7152 an embedded ELF object, for which the .got section acts like the
7153 AIX .toc section. */
7619e7c7 7154 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
7155 if (sec == NULL || sec->output_section == NULL)
7156 {
7157 unresolved_reloc = TRUE;
7158 break;
7159 }
7160 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
f12123c0 7161 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
252b5132 7162
3b4f3a11 7163 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
7164 break;
7165
7619e7c7 7166 case R_PPC_PLTREL24:
252b5132 7167 /* Relocation is to the entry for this symbol in the
70bccea4 7168 procedure linkage table. */
a6aa5195
AM
7169 {
7170 struct plt_entry *ent = find_plt_ent (h, got2, addend);
252b5132 7171
a6aa5195
AM
7172 addend = 0;
7173 if (ent == NULL
7174 || htab->plt == NULL)
7175 {
7176 /* We didn't make a PLT entry for this symbol. This
7177 happens when statically linking PIC code, or when
7178 using -Bsymbolic. */
7179 break;
7180 }
252b5132 7181
a6aa5195 7182 unresolved_reloc = FALSE;
4a3dc543 7183 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
7184 relocation = (htab->glink->output_section->vma
7185 + htab->glink->output_offset
7186 + ent->glink_offset);
7187 else
7188 relocation = (htab->plt->output_section->vma
7189 + htab->plt->output_offset
7190 + ent->plt.offset);
7191 }
8da6118f 7192 break;
252b5132 7193
70bccea4 7194 /* Relocate against _SDA_BASE_. */
7619e7c7 7195 case R_PPC_SDAREL16:
252b5132
RH
7196 {
7197 const char *name;
7198
3b4f3a11
AM
7199 if (sec == NULL || sec->output_section == NULL)
7200 {
7201 unresolved_reloc = TRUE;
7202 break;
7203 }
7204
252b5132 7205 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7206 if (! ((CONST_STRNEQ (name, ".sdata")
5f819128 7207 && (name[6] == 0 || name[6] == '.'))
0112cd26 7208 || (CONST_STRNEQ (name, ".sbss")
5f819128 7209 && (name[5] == 0 || name[5] == '.'))))
252b5132 7210 {
55fd94b0 7211 (*_bfd_error_handler)
d003868e 7212 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7213 "in the wrong output section (%s)"),
d003868e 7214 input_bfd,
55fd94b0
AM
7215 sym_name,
7216 howto->name,
7217 name);
252b5132 7218 }
e87d4038 7219 addend -= SYM_VAL (htab->sdata[0].sym);
252b5132
RH
7220 }
7221 break;
7222
70bccea4 7223 /* Relocate against _SDA2_BASE_. */
7619e7c7 7224 case R_PPC_EMB_SDA2REL:
252b5132
RH
7225 {
7226 const char *name;
7227
3b4f3a11
AM
7228 if (sec == NULL || sec->output_section == NULL)
7229 {
7230 unresolved_reloc = TRUE;
7231 break;
7232 }
7233
252b5132 7234 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26
NC
7235 if (! (CONST_STRNEQ (name, ".sdata2")
7236 || CONST_STRNEQ (name, ".sbss2")))
252b5132 7237 {
55fd94b0 7238 (*_bfd_error_handler)
d003868e 7239 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7240 "in the wrong output section (%s)"),
d003868e 7241 input_bfd,
55fd94b0
AM
7242 sym_name,
7243 howto->name,
7244 name);
c3668558 7245
252b5132 7246 bfd_set_error (bfd_error_bad_value);
b34976b6 7247 ret = FALSE;
252b5132
RH
7248 continue;
7249 }
e87d4038 7250 addend -= SYM_VAL (htab->sdata[1].sym);
252b5132
RH
7251 }
7252 break;
7253
70bccea4 7254 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7
AM
7255 case R_PPC_EMB_SDA21:
7256 case R_PPC_EMB_RELSDA:
252b5132
RH
7257 {
7258 const char *name;
7259 int reg;
7260
3b4f3a11
AM
7261 if (sec == NULL || sec->output_section == NULL)
7262 {
7263 unresolved_reloc = TRUE;
7264 break;
7265 }
7266
252b5132 7267 name = bfd_get_section_name (abfd, sec->output_section);
0112cd26 7268 if (((CONST_STRNEQ (name, ".sdata")
5f819128 7269 && (name[6] == 0 || name[6] == '.'))
0112cd26 7270 || (CONST_STRNEQ (name, ".sbss")
5f819128 7271 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH
7272 {
7273 reg = 13;
e87d4038 7274 addend -= SYM_VAL (htab->sdata[0].sym);
252b5132 7275 }
0112cd26
NC
7276 else if (CONST_STRNEQ (name, ".sdata2")
7277 || CONST_STRNEQ (name, ".sbss2"))
252b5132
RH
7278 {
7279 reg = 2;
e87d4038 7280 addend -= SYM_VAL (htab->sdata[1].sym);
252b5132 7281 }
8da6118f
KH
7282 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7283 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
7284 {
7285 reg = 0;
7286 }
252b5132
RH
7287 else
7288 {
55fd94b0 7289 (*_bfd_error_handler)
d003868e 7290 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 7291 "in the wrong output section (%s)"),
d003868e 7292 input_bfd,
55fd94b0
AM
7293 sym_name,
7294 howto->name,
7295 name);
252b5132
RH
7296
7297 bfd_set_error (bfd_error_bad_value);
b34976b6 7298 ret = FALSE;
252b5132
RH
7299 continue;
7300 }
7301
7302 if (r_type == R_PPC_EMB_SDA21)
7303 { /* fill in register field */
7619e7c7 7304 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 7305 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 7306 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
7307 }
7308 }
7309 break;
7310
70bccea4 7311 /* Relocate against the beginning of the section. */
7619e7c7
AM
7312 case R_PPC_SECTOFF:
7313 case R_PPC_SECTOFF_LO:
7314 case R_PPC_SECTOFF_HI:
7315 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
7316 if (sec == NULL || sec->output_section == NULL)
7317 {
7318 unresolved_reloc = TRUE;
7319 break;
7320 }
252b5132 7321 addend -= sec->output_section->vma;
252b5132
RH
7322 break;
7323
70bccea4 7324 /* Negative relocations. */
7619e7c7
AM
7325 case R_PPC_EMB_NADDR32:
7326 case R_PPC_EMB_NADDR16:
7327 case R_PPC_EMB_NADDR16_LO:
7328 case R_PPC_EMB_NADDR16_HI:
7329 case R_PPC_EMB_NADDR16_HA:
8da6118f 7330 addend -= 2 * relocation;
252b5132
RH
7331 break;
7332
7619e7c7
AM
7333 case R_PPC_COPY:
7334 case R_PPC_GLOB_DAT:
7335 case R_PPC_JMP_SLOT:
7336 case R_PPC_RELATIVE:
7337 case R_PPC_PLT32:
7338 case R_PPC_PLTREL32:
7339 case R_PPC_PLT16_LO:
7340 case R_PPC_PLT16_HI:
7341 case R_PPC_PLT16_HA:
7342 case R_PPC_ADDR30:
7343 case R_PPC_EMB_RELSEC16:
7344 case R_PPC_EMB_RELST_LO:
7345 case R_PPC_EMB_RELST_HI:
7346 case R_PPC_EMB_RELST_HA:
7347 case R_PPC_EMB_BIT_FLD:
7348 (*_bfd_error_handler)
d003868e
AM
7349 (_("%B: relocation %s is not yet supported for symbol %s."),
7350 input_bfd,
7619e7c7
AM
7351 howto->name,
7352 sym_name);
252b5132
RH
7353
7354 bfd_set_error (bfd_error_invalid_operation);
b34976b6 7355 ret = FALSE;
252b5132 7356 continue;
7619e7c7 7357 }
252b5132 7358
7619e7c7
AM
7359 /* Do any further special processing. */
7360 switch (r_type)
7361 {
7362 default:
7363 break;
7364
7365 case R_PPC_ADDR16_HA:
d7128ce4 7366 case R_PPC_REL16_HA:
7619e7c7
AM
7367 case R_PPC_SECTOFF_HA:
7368 case R_PPC_TPREL16_HA:
7369 case R_PPC_DTPREL16_HA:
7619e7c7
AM
7370 case R_PPC_EMB_NADDR16_HA:
7371 case R_PPC_EMB_RELST_HA:
7372 /* It's just possible that this symbol is a weak symbol
7b609f53 7373 that's not actually defined anywhere. In that case,
7619e7c7
AM
7374 'sec' would be NULL, and we should leave the symbol
7375 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
7376 if (sec == NULL)
7377 break;
7378 /* Fall thru */
7379
7380 case R_PPC_PLT16_HA:
7381 case R_PPC_GOT16_HA:
7382 case R_PPC_GOT_TLSGD16_HA:
7383 case R_PPC_GOT_TLSLD16_HA:
7384 case R_PPC_GOT_TPREL16_HA:
7385 case R_PPC_GOT_DTPREL16_HA:
7386 /* Add 0x10000 if sign bit in 0:15 is set.
7387 Bits 0:15 are not used. */
7388 addend += 0x8000;
7619e7c7 7389 break;
252b5132
RH
7390 }
7391
252b5132 7392#ifdef DEBUG
55fd94b0
AM
7393 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7394 "offset = %ld, addend = %ld\n",
252b5132 7395 howto->name,
8da6118f 7396 (int) r_type,
252b5132
RH
7397 sym_name,
7398 r_symndx,
7619e7c7 7399 (long) rel->r_offset,
8da6118f 7400 (long) addend);
252b5132
RH
7401#endif
7402
7619e7c7
AM
7403 if (unresolved_reloc
7404 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 7405 && h->def_dynamic))
7619e7c7
AM
7406 {
7407 (*_bfd_error_handler)
d003868e
AM
7408 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7409 input_bfd,
7410 input_section,
7619e7c7 7411 (long) rel->r_offset,
7b609f53 7412 howto->name,
7619e7c7
AM
7413 sym_name);
7414 ret = FALSE;
7415 }
7416
252b5132
RH
7417 r = _bfd_final_link_relocate (howto,
7418 input_bfd,
7419 input_section,
7420 contents,
7619e7c7 7421 rel->r_offset,
252b5132
RH
7422 relocation,
7423 addend);
7424
7619e7c7 7425 if (r != bfd_reloc_ok)
252b5132 7426 {
7619e7c7 7427 if (r == bfd_reloc_overflow)
252b5132 7428 {
7619e7c7
AM
7429 if (warned)
7430 continue;
7431 if (h != NULL
7432 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH
7433 && howto->pc_relative)
7434 {
7435 /* Assume this is a call protected by other code that
7436 detect the symbol is undefined. If this is the case,
7437 we can safely ignore the overflow. If not, the
7438 program is hosed anyway, and a little warning isn't
7439 going to help. */
252b5132 7440
dc1bc0c9
RH
7441 continue;
7442 }
252b5132 7443
7619e7c7 7444 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 7445 (h ? &h->root : NULL),
7619e7c7
AM
7446 sym_name,
7447 howto->name,
7448 rel->r_addend,
7449 input_bfd,
7450 input_section,
7451 rel->r_offset))
7452 return FALSE;
dc1bc0c9
RH
7453 }
7454 else
7455 {
7619e7c7 7456 (*_bfd_error_handler)
d003868e
AM
7457 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7458 input_bfd, input_section,
7b609f53 7459 (long) rel->r_offset, howto->name, sym_name, (int) r);
7619e7c7 7460 ret = FALSE;
252b5132
RH
7461 }
7462 }
7463 }
7464
252b5132
RH
7465#ifdef DEBUG
7466 fprintf (stderr, "\n");
7467#endif
7468
7469 return ret;
7470}
252b5132 7471\f
a6aa5195
AM
7472#define PPC_LO(v) ((v) & 0xffff)
7473#define PPC_HI(v) (((v) >> 16) & 0xffff)
7474#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7475
25dbc73a
AM
7476/* Finish up dynamic symbol handling. We set the contents of various
7477 dynamic sections here. */
c5fccbec 7478
b34976b6 7479static bfd_boolean
25dbc73a
AM
7480ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7481 struct bfd_link_info *info,
7482 struct elf_link_hash_entry *h,
7483 Elf_Internal_Sym *sym)
e1a9cb8e 7484{
25dbc73a 7485 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
7486 struct plt_entry *ent;
7487 bfd_boolean doneone;
e1a9cb8e 7488
25dbc73a
AM
7489#ifdef DEBUG
7490 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7491 h->root.root.string);
7492#endif
e1a9cb8e 7493
25dbc73a
AM
7494 htab = ppc_elf_hash_table (info);
7495 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 7496
a6aa5195
AM
7497 doneone = FALSE;
7498 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7499 if (ent->plt.offset != (bfd_vma) -1)
7500 {
7501 if (!doneone)
7502 {
7503 Elf_Internal_Rela rela;
7504 bfd_byte *loc;
7505 bfd_vma reloc_index;
e1a9cb8e 7506
4a3dc543 7507 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
7508 reloc_index = ent->plt.offset / 4;
7509 else
7510 {
7511 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7512 / htab->plt_slot_size);
7513 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 7514 && htab->plt_type == PLT_OLD)
9d8504b1
PB
7515 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
7516 }
7517
a6aa5195
AM
7518 /* This symbol has an entry in the procedure linkage table.
7519 Set it up. */
4a3dc543 7520 if (htab->plt_type == PLT_VXWORKS)
a6aa5195 7521 {
9d8504b1
PB
7522 bfd_vma got_offset;
7523 const bfd_vma *plt_entry;
7524
7525 /* The first three entries in .got.plt are reserved. */
7526 got_offset = (reloc_index + 3) * 4;
7527
7528 /* Use the right PLT. */
7529 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
7530 : ppc_elf_vxworks_plt_entry;
7531
7532 /* Fill in the .plt on VxWorks. */
7533 if (info->shared)
7534 {
9d8504b1 7535 bfd_put_32 (output_bfd,
e87d4038 7536 plt_entry[0] | PPC_HA (got_offset),
9d8504b1
PB
7537 htab->plt->contents + ent->plt.offset + 0);
7538 bfd_put_32 (output_bfd,
e87d4038 7539 plt_entry[1] | PPC_LO (got_offset),
9d8504b1
PB
7540 htab->plt->contents + ent->plt.offset + 4);
7541 }
7542 else
7543 {
e87d4038 7544 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
7545
7546 bfd_put_32 (output_bfd,
e87d4038 7547 plt_entry[0] | PPC_HA (got_loc),
9d8504b1
PB
7548 htab->plt->contents + ent->plt.offset + 0);
7549 bfd_put_32 (output_bfd,
e87d4038 7550 plt_entry[1] | PPC_LO (got_loc),
9d8504b1
PB
7551 htab->plt->contents + ent->plt.offset + 4);
7552 }
7553
7554 bfd_put_32 (output_bfd, plt_entry[2],
7555 htab->plt->contents + ent->plt.offset + 8);
7556 bfd_put_32 (output_bfd, plt_entry[3],
7557 htab->plt->contents + ent->plt.offset + 12);
7558
7559 /* This instruction is an immediate load. The value loaded is
7560 the byte offset of the R_PPC_JMP_SLOT relocation from the
7561 start of the .rela.plt section. The value is stored in the
7562 low-order 16 bits of the load instruction. */
7563 /* NOTE: It appears that this is now an index rather than a
7564 prescaled offset. */
7565 bfd_put_32 (output_bfd,
7566 plt_entry[4] | reloc_index,
7567 htab->plt->contents + ent->plt.offset + 16);
7568 /* This instruction is a PC-relative branch whose target is
7569 the start of the PLT section. The address of this branch
7570 instruction is 20 bytes beyond the start of this PLT entry.
7571 The address is encoded in bits 6-29, inclusive. The value
7572 stored is right-shifted by two bits, permitting a 26-bit
7573 offset. */
7574 bfd_put_32 (output_bfd,
7575 (plt_entry[5]
7576 | (-(ent->plt.offset + 20) & 0x03fffffc)),
7577 htab->plt->contents + ent->plt.offset + 20);
7578 bfd_put_32 (output_bfd, plt_entry[6],
7579 htab->plt->contents + ent->plt.offset + 24);
7580 bfd_put_32 (output_bfd, plt_entry[7],
7581 htab->plt->contents + ent->plt.offset + 28);
7582
7583 /* Fill in the GOT entry corresponding to this PLT slot with
7584 the address immediately after the the "bctr" instruction
7585 in this PLT entry. */
7586 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
7587 + htab->plt->output_offset
7588 + ent->plt.offset + 16),
7589 htab->sgotplt->contents + got_offset);
7590
7591 if (!info->shared)
7592 {
7593 /* Fill in a couple of entries in .rela.plt.unloaded. */
7594 loc = htab->srelplt2->contents
7595 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
7596 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
7597 * sizeof (Elf32_External_Rela));
7598
7599 /* Provide the @ha relocation for the first instruction. */
7600 rela.r_offset = (htab->plt->output_section->vma
7601 + htab->plt->output_offset
7602 + ent->plt.offset + 2);
636ce3f5 7603 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
7604 R_PPC_ADDR16_HA);
7605 rela.r_addend = got_offset;
7606 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7607 loc += sizeof (Elf32_External_Rela);
7608
7609 /* Provide the @l relocation for the second instruction. */
7610 rela.r_offset = (htab->plt->output_section->vma
7611 + htab->plt->output_offset
7612 + ent->plt.offset + 6);
636ce3f5 7613 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
7614 R_PPC_ADDR16_LO);
7615 rela.r_addend = got_offset;
7616 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7617 loc += sizeof (Elf32_External_Rela);
7618
7619 /* Provide a relocation for the GOT entry corresponding to this
7620 PLT slot. Point it at the middle of the .plt entry. */
7621 rela.r_offset = (htab->sgotplt->output_section->vma
7622 + htab->sgotplt->output_offset
7623 + got_offset);
7325306f 7624 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
7625 R_PPC_ADDR32);
7626 rela.r_addend = ent->plt.offset + 16;
7627 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7628 }
7629
7630 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7631 In particular, the offset for the relocation is not the
7632 address of the PLT entry for this function, as specified
7633 by the ABI. Instead, the offset is set to the address of
7634 the GOT slot for this function. See EABI 4.4.4.1. */
7635 rela.r_offset = (htab->sgotplt->output_section->vma
7636 + htab->sgotplt->output_offset
7637 + got_offset);
7638
a6aa5195
AM
7639 }
7640 else
7641 {
9d8504b1
PB
7642 rela.r_offset = (htab->plt->output_section->vma
7643 + htab->plt->output_offset
7644 + ent->plt.offset);
4a3dc543 7645 if (htab->plt_type == PLT_OLD)
9d8504b1
PB
7646 {
7647 /* We don't need to fill in the .plt. The ppc dynamic
7648 linker will fill it in. */
7649 }
7650 else
7651 {
7652 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
7653 + htab->glink->output_section->vma
7654 + htab->glink->output_offset);
7655 bfd_put_32 (output_bfd, val,
7656 htab->plt->contents + ent->plt.offset);
7657 }
a6aa5195 7658 }
e1a9cb8e 7659
a6aa5195 7660 /* Fill in the entry in the .rela.plt section. */
a6aa5195
AM
7661 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
7662 rela.r_addend = 0;
e1a9cb8e 7663
a6aa5195
AM
7664 loc = (htab->relplt->contents
7665 + reloc_index * sizeof (Elf32_External_Rela));
7666 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 7667
a6aa5195
AM
7668 if (!h->def_regular)
7669 {
0eb4a168
AM
7670 /* Mark the symbol as undefined, rather than as
7671 defined in the .plt section. Leave the value if
7672 there were any relocations where pointer equality
7673 matters (this is a clue for the dynamic linker, to
7674 make function pointer comparisons work between an
7675 application and shared library), otherwise set it
7676 to zero. */
a6aa5195 7677 sym->st_shndx = SHN_UNDEF;
0eb4a168 7678 if (!h->pointer_equality_needed)
a6aa5195 7679 sym->st_value = 0;
0eb4a168
AM
7680 else if (!h->ref_regular_nonweak)
7681 {
625af618
AM
7682 /* This breaks function pointer comparisons, but
7683 that is better than breaking tests for a NULL
0eb4a168 7684 function pointer. */
0eb4a168
AM
7685 sym->st_value = 0;
7686 }
a6aa5195
AM
7687 }
7688 doneone = TRUE;
7689 }
e1a9cb8e 7690
4a3dc543 7691 if (htab->plt_type == PLT_NEW)
a6aa5195
AM
7692 {
7693 bfd_vma plt;
7694 unsigned char *p;
e1a9cb8e 7695
a6aa5195
AM
7696 plt = (ent->plt.offset
7697 + htab->plt->output_section->vma
7698 + htab->plt->output_offset);
7699 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
e1a9cb8e 7700
a6aa5195
AM
7701 if (info->shared || info->pie)
7702 {
7703 bfd_vma got = 0;
7704
7705 if (ent->addend >= 32768)
7706 got = (ent->addend
7707 + ent->sec->output_section->vma
7708 + ent->sec->output_offset);
7709 else if (htab->elf.hgot != NULL)
e87d4038 7710 got = SYM_VAL (htab->elf.hgot);
a6aa5195
AM
7711
7712 plt -= got;
7713
7714 if (plt + 0x8000 < 0x10000)
7715 {
7716 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7717 p += 4;
7718 bfd_put_32 (output_bfd, MTCTR_11, p);
7719 p += 4;
7720 bfd_put_32 (output_bfd, BCTR, p);
7721 p += 4;
7722 bfd_put_32 (output_bfd, NOP, p);
7723 p += 4;
7724 }
7725 else
7726 {
7727 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7728 p += 4;
7729 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7730 p += 4;
7731 bfd_put_32 (output_bfd, MTCTR_11, p);
7732 p += 4;
7733 bfd_put_32 (output_bfd, BCTR, p);
7734 p += 4;
7735 }
7736 }
7737 else
7738 {
7739 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7740 p += 4;
7741 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7742 p += 4;
7743 bfd_put_32 (output_bfd, MTCTR_11, p);
7744 p += 4;
7745 bfd_put_32 (output_bfd, BCTR, p);
7746 p += 4;
28e99bb6
AM
7747
7748 /* We only need one non-PIC glink stub. */
7749 break;
a6aa5195
AM
7750 }
7751 }
7752 else
7753 break;
7754 }
e1a9cb8e 7755
25dbc73a
AM
7756 if (h->needs_copy)
7757 {
7758 asection *s;
7759 Elf_Internal_Rela rela;
7760 bfd_byte *loc;
e1a9cb8e 7761
25dbc73a 7762 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 7763
25dbc73a
AM
7764#ifdef DEBUG
7765 fprintf (stderr, ", copy");
7766#endif
e1a9cb8e 7767
25dbc73a 7768 BFD_ASSERT (h->dynindx != -1);
86bbe32f 7769
4dc4a9a5 7770 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
7771 s = htab->relsbss;
7772 else
7773 s = htab->relbss;
7774 BFD_ASSERT (s != NULL);
e1a9cb8e 7775
e87d4038 7776 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
7777 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7778 rela.r_addend = 0;
7779 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7780 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7781 }
e1a9cb8e 7782
25dbc73a
AM
7783#ifdef DEBUG
7784 fprintf (stderr, "\n");
7785#endif
e1a9cb8e 7786
25dbc73a 7787 /* Mark some specially defined symbols as absolute. */
9d8504b1
PB
7788 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7789 || (!htab->is_vxworks
7790 && (h == htab->elf.hgot
7791 || strcmp (h->root.root.string,
7792 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
25dbc73a 7793 sym->st_shndx = SHN_ABS;
e1a9cb8e 7794
25dbc73a
AM
7795 return TRUE;
7796}
7797\f
7798static enum elf_reloc_type_class
7799ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 7800{
25dbc73a
AM
7801 switch (ELF32_R_TYPE (rela->r_info))
7802 {
7803 case R_PPC_RELATIVE:
7804 return reloc_class_relative;
7805 case R_PPC_REL24:
7806 case R_PPC_ADDR24:
7807 case R_PPC_JMP_SLOT:
7808 return reloc_class_plt;
7809 case R_PPC_COPY:
7810 return reloc_class_copy;
7811 default:
7812 return reloc_class_normal;
7813 }
e1a9cb8e 7814}
25dbc73a
AM
7815\f
7816/* Finish up the dynamic sections. */
e1a9cb8e 7817
25dbc73a
AM
7818static bfd_boolean
7819ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7820 struct bfd_link_info *info)
e1a9cb8e 7821{
25dbc73a 7822 asection *sdyn;
9d8504b1 7823 asection *splt;
25dbc73a 7824 struct ppc_elf_link_hash_table *htab;
1fe44d79 7825 bfd_vma got;
e87d4038
AM
7826 bfd *dynobj;
7827 bfd_boolean ret = TRUE;
e1a9cb8e 7828
25dbc73a
AM
7829#ifdef DEBUG
7830 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7831#endif
6b0817e5 7832
25dbc73a 7833 htab = ppc_elf_hash_table (info);
9d8504b1
PB
7834 dynobj = elf_hash_table (info)->dynobj;
7835 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7836 if (htab->is_vxworks)
7837 splt = bfd_get_section_by_name (dynobj, ".plt");
7838 else
7839 splt = NULL;
e1a9cb8e 7840
1fe44d79
AM
7841 got = 0;
7842 if (htab->elf.hgot != NULL)
e87d4038 7843 got = SYM_VAL (htab->elf.hgot);
1fe44d79 7844
25dbc73a 7845 if (htab->elf.dynamic_sections_created)
e1a9cb8e 7846 {
25dbc73a 7847 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 7848
25dbc73a 7849 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 7850
25dbc73a
AM
7851 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7852 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7853 for (; dyncon < dynconend; dyncon++)
7854 {
7855 Elf_Internal_Dyn dyn;
7856 asection *s;
e1a9cb8e 7857
9d8504b1 7858 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 7859
25dbc73a
AM
7860 switch (dyn.d_tag)
7861 {
7862 case DT_PLTGOT:
9d8504b1
PB
7863 if (htab->is_vxworks)
7864 s = htab->sgotplt;
7865 else
7866 s = htab->plt;
25dbc73a
AM
7867 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7868 break;
86bbe32f 7869
25dbc73a
AM
7870 case DT_PLTRELSZ:
7871 dyn.d_un.d_val = htab->relplt->size;
7872 break;
e1a9cb8e 7873
25dbc73a
AM
7874 case DT_JMPREL:
7875 s = htab->relplt;
7876 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7877 break;
2f89ff8d 7878
1fe44d79
AM
7879 case DT_PPC_GOT:
7880 dyn.d_un.d_ptr = got;
d7128ce4
AM
7881 break;
7882
9d8504b1
PB
7883 case DT_RELASZ:
7884 if (htab->is_vxworks)
7885 {
7886 if (htab->relplt)
7887 dyn.d_un.d_ptr -= htab->relplt->size;
7888 break;
7889 }
7890 continue;
7891
25dbc73a 7892 default:
7a2b07ff
NS
7893 if (htab->is_vxworks
7894 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7895 break;
25dbc73a
AM
7896 continue;
7897 }
4c45e5c9 7898
25dbc73a
AM
7899 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7900 }
7901 }
4c45e5c9 7902
3b36f7e6 7903 if (htab->got != NULL)
25dbc73a 7904 {
e79f5955
AM
7905 if (htab->elf.hgot->root.u.def.section == htab->got
7906 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
e87d4038 7907 {
e79f5955 7908 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 7909
e87d4038
AM
7910 p += htab->elf.hgot->root.u.def.value;
7911 if (htab->plt_type == PLT_OLD)
e79f5955
AM
7912 {
7913 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
7914 so that a function can easily find the address of
7915 _GLOBAL_OFFSET_TABLE_. */
7916 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
7917 < htab->elf.hgot->root.u.def.section->size);
7918 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
7919 }
3b36f7e6 7920
e87d4038 7921 if (sdyn != NULL)
e79f5955
AM
7922 {
7923 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
7924 BFD_ASSERT (htab->elf.hgot->root.u.def.value
7925 < htab->elf.hgot->root.u.def.section->size);
7926 bfd_put_32 (output_bfd, val, p);
7927 }
e87d4038
AM
7928 }
7929 else
7930 {
7931 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
7932 htab->elf.hgot->root.root.string,
e79f5955
AM
7933 (htab->sgotplt != NULL
7934 ? htab->sgotplt->name : htab->got->name));
e87d4038
AM
7935 bfd_set_error (bfd_error_bad_value);
7936 ret = FALSE;
7937 }
25dbc73a
AM
7938
7939 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7940 }
7941
9d8504b1
PB
7942 /* Fill in the first entry in the VxWorks procedure linkage table. */
7943 if (splt && splt->size > 0)
7944 {
7945 /* Use the right PLT. */
7946 static const bfd_vma *plt_entry = NULL;
7947 plt_entry = info->shared ?
7948 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7949
7950 if (!info->shared)
7951 {
e87d4038 7952 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 7953
e87d4038 7954 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 7955 splt->contents + 0);
e87d4038 7956 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
7957 splt->contents + 4);
7958 }
7959 else
7960 {
7961 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7962 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7963 }
7964 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7965 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7966 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7967 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7968 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7969 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7970
7971 if (! info->shared)
7972 {
7973 Elf_Internal_Rela rela;
7974 bfd_byte *loc;
7975
7976 loc = htab->srelplt2->contents;
7977
7978 /* Output the @ha relocation for the first instruction. */
7979 rela.r_offset = (htab->plt->output_section->vma
7980 + htab->plt->output_offset
7981 + 2);
636ce3f5 7982 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
7983 rela.r_addend = 0;
7984 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7985 loc += sizeof (Elf32_External_Rela);
7986
7987 /* Output the @l relocation for the second instruction. */
7988 rela.r_offset = (htab->plt->output_section->vma
7989 + htab->plt->output_offset
7990 + 6);
636ce3f5 7991 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
7992 rela.r_addend = 0;
7993 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7994 loc += sizeof (Elf32_External_Rela);
7995
7996 /* Fix up the remaining relocations. They may have the wrong
7997 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7998 in which symbols were output. */
7999 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8000 {
8001 Elf_Internal_Rela rel;
8002
8003 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 8004 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
8005 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8006 loc += sizeof (Elf32_External_Rela);
8007
8008 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 8009 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
8010 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8011 loc += sizeof (Elf32_External_Rela);
8012
8013 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 8014 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
8015 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8016 loc += sizeof (Elf32_External_Rela);
8017 }
8018 }
8019 }
8020
d7128ce4
AM
8021 if (htab->glink != NULL && htab->glink->contents != NULL)
8022 {
8023 unsigned char *p;
8024 unsigned char *endp;
a6aa5195 8025 bfd_vma res0;
d7128ce4 8026 unsigned int i;
a6aa5195
AM
8027
8028 /*
8029 * PIC glink code is the following:
8030 *
8031 * # ith PLT code stub.
8032 * addis 11,30,(plt+(i-1)*4-got)@ha
8033 * lwz 11,(plt+(i-1)*4-got)@l(11)
8034 * mtctr 11
8035 * bctr
8036 *
8037 * # A table of branches, one for each plt entry.
176a0d42 8038 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
8039 * # addresses, so (r11 - res_0) gives the plt index * 4.
8040 * res_0: b PLTresolve
8041 * res_1: b PLTresolve
8042 * .
8043 * # Some number of entries towards the end can be nops
8044 * res_n_m3: nop
8045 * res_n_m2: nop
8046 * res_n_m1:
8047 *
8048 * PLTresolve:
8049 * addis 11,11,(1f-res_0)@ha
8050 * mflr 0
8051 * bcl 20,31,1f
8052 * 1: addi 11,11,(1b-res_0)@l
8053 * mflr 12
8054 * mtlr 0
8055 * sub 11,11,12 # r11 = index * 4
8056 * addis 12,12,(got+4-1b)@ha
8057 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8058 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8059 * mtctr 0
8060 * add 0,11,11
8061 * add 11,0,11 # r11 = index * 12 = reloc offset.
8062 * bctr
8063 */
8064 static const unsigned int pic_plt_resolve[] =
8065 {
8066 ADDIS_11_11,
8067 MFLR_0,
8068 BCL_20_31,
8069 ADDI_11_11,
8070 MFLR_12,
8071 MTLR_0,
8072 SUB_11_11_12,
8073 ADDIS_12_12,
8074 LWZ_0_12,
8075 LWZ_12_12,
8076 MTCTR_0,
8077 ADD_0_11_11,
8078 ADD_11_0_11,
8079 BCTR,
8080 NOP,
8081 NOP
8082 };
8083
176a0d42
AM
8084 /*
8085 * Non-PIC glink code is a little simpler.
8086 *
8087 * # ith PLT code stub.
8088 * lis 11,(plt+(i-1)*4)@ha
8089 * lwz 11,(plt+(i-1)*4)@l(11)
8090 * mtctr 11
8091 * bctr
8092 *
8093 * The branch table is the same, then comes
8094 *
8095 * PLTresolve:
8096 * lis 12,(got+4)@ha
8097 * addis 11,11,(-res_0)@ha
8098 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8099 * addi 11,11,(-res_0)@l # r11 = index * 4
8100 * mtctr 0
8101 * add 0,11,11
8102 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8103 * add 11,0,11 # r11 = index * 12 = reloc offset.
8104 * bctr
8105 */
d7128ce4
AM
8106 static const unsigned int plt_resolve[] =
8107 {
a6aa5195
AM
8108 LIS_12,
8109 ADDIS_11_11,
8110 LWZ_0_12,
8111 ADDI_11_11,
d7128ce4 8112 MTCTR_0,
7e8aeb9a 8113 ADD_0_11_11,
a6aa5195 8114 LWZ_12_12,
7e8aeb9a 8115 ADD_11_0_11,
d7128ce4
AM
8116 BCTR,
8117 NOP,
8118 NOP,
a6aa5195
AM
8119 NOP,
8120 NOP,
8121 NOP,
8122 NOP,
d7128ce4
AM
8123 NOP
8124 };
8125
a6aa5195
AM
8126 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8127 abort ();
8128 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
8129 abort ();
8130
a6aa5195 8131 /* Build the branch table, one for each plt entry (less one),
86b9da88 8132 and perhaps some padding. */
a6aa5195
AM
8133 p = htab->glink->contents;
8134 p += htab->glink_pltresolve;
86b9da88
AM
8135 endp = htab->glink->contents;
8136 endp += htab->glink->size - GLINK_PLTRESOLVE;
8137 while (p < endp - 8 * 4)
8138 {
8139 bfd_put_32 (output_bfd, B + endp - p, p);
8140 p += 4;
8141 }
8142 while (p < endp)
8143 {
8144 bfd_put_32 (output_bfd, NOP, p);
8145 p += 4;
8146 }
8147
7e8aeb9a 8148 res0 = (htab->glink_pltresolve
86b9da88
AM
8149 + htab->glink->output_section->vma
8150 + htab->glink->output_offset);
8151
8152 /* Last comes the PLTresolve stub. */
7e8aeb9a
AM
8153 if (info->shared || info->pie)
8154 {
a6aa5195 8155 bfd_vma bcl;
d7128ce4 8156
a6aa5195 8157 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 8158 {
a6aa5195 8159 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7e8aeb9a
AM
8160 p += 4;
8161 }
a6aa5195
AM
8162 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8163
8164 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8165 + htab->glink->output_section->vma
8166 + htab->glink->output_offset);
8167
8168 bfd_put_32 (output_bfd,
8169 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8170 bfd_put_32 (output_bfd,
8171 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8172 bfd_put_32 (output_bfd,
8173 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8174 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8175 {
8176 bfd_put_32 (output_bfd,
8177 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8178 bfd_put_32 (output_bfd,
8179 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8180 }
8181 else
8182 {
8183 bfd_put_32 (output_bfd,
8184 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8185 bfd_put_32 (output_bfd,
8186 LWZ_12_12 + 4, p + 9*4);
8187 }
7e8aeb9a
AM
8188 }
8189 else
d7128ce4 8190 {
a6aa5195 8191 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a
AM
8192 {
8193 bfd_put_32 (output_bfd, plt_resolve[i], p);
8194 p += 4;
8195 }
a6aa5195
AM
8196 p -= 4 * ARRAY_SIZE (plt_resolve);
8197
8198 bfd_put_32 (output_bfd,
8199 LIS_12 + PPC_HA (got + 4), p + 0*4);
8200 bfd_put_32 (output_bfd,
8201 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8202 bfd_put_32 (output_bfd,
8203 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8204 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8205 {
8206 bfd_put_32 (output_bfd,
8207 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8208 bfd_put_32 (output_bfd,
8209 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8210 }
8211 else
8212 {
8213 bfd_put_32 (output_bfd,
8214 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8215 bfd_put_32 (output_bfd,
8216 LWZ_12_12 + 4, p + 6*4);
8217 }
d7128ce4 8218 }
d7128ce4
AM
8219 }
8220
e87d4038 8221 return ret;
25dbc73a 8222}
e1a9cb8e 8223\f
252b5132
RH
8224#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8225#define TARGET_LITTLE_NAME "elf32-powerpcle"
8226#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8227#define TARGET_BIG_NAME "elf32-powerpc"
8228#define ELF_ARCH bfd_arch_powerpc
8229#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
8230#ifdef __QNXTARGET__
8231#define ELF_MAXPAGESIZE 0x1000
8232#else
252b5132 8233#define ELF_MAXPAGESIZE 0x10000
d0facd1b 8234#endif
b1342370 8235#define ELF_MINPAGESIZE 0x1000
24718e3b 8236#define ELF_COMMONPAGESIZE 0x1000
252b5132
RH
8237#define elf_info_to_howto ppc_elf_info_to_howto
8238
8239#ifdef EM_CYGNUS_POWERPC
8240#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8241#endif
8242
8243#ifdef EM_PPC_OLD
8244#define ELF_MACHINE_ALT2 EM_PPC_OLD
8245#endif
8246
8247#define elf_backend_plt_not_loaded 1
252b5132 8248#define elf_backend_can_gc_sections 1
51b64d56 8249#define elf_backend_can_refcount 1
b491616a 8250#define elf_backend_rela_normal 1
252b5132 8251
43c40ab2 8252#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 8253#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 8254#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 8255#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
157090f7 8256#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 8257#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 8258#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 8259#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 8260
feee612b 8261#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
8262#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8263#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8264#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8265#define elf_backend_relocate_section ppc_elf_relocate_section
8266#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8267#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 8268#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
8269#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8270#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8271#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 8272#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
8273#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8274#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8275#define elf_backend_fake_sections ppc_elf_fake_sections
8276#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
c5fccbec
DJ
8277#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8278#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 8279#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 8280#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
8281#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8282#define elf_backend_final_write_processing ppc_elf_final_write_processing
8283#define elf_backend_write_section ppc_elf_write_section
551b43fd 8284#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 8285#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 8286#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 8287#define elf_backend_init_index_section _bfd_elf_init_1_index_section
252b5132
RH
8288
8289#include "elf32-target.h"
9d8504b1
PB
8290
8291/* VxWorks Target */
8292
8293#undef TARGET_LITTLE_SYM
8294#undef TARGET_LITTLE_NAME
8295
8296#undef TARGET_BIG_SYM
8297#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8298#undef TARGET_BIG_NAME
8299#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8300
d5e3d971
PB
8301/* VxWorks uses the elf default section flags for .plt. */
8302static const struct bfd_elf_special_section *
8303ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 8304{
d5e3d971
PB
8305 if (sec->name == NULL)
8306 return NULL;
8307
8308 if (strcmp (sec->name, ".plt") == 0)
8309 return _bfd_elf_get_sec_type_attr (abfd, sec);
8310
8311 return ppc_elf_get_sec_type_attr (abfd, sec);
8312}
9d8504b1
PB
8313
8314/* Like ppc_elf_link_hash_table_create, but overrides
8315 appropriately for VxWorks. */
8316static struct bfd_link_hash_table *
8317ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8318{
8319 struct bfd_link_hash_table *ret;
8320
8321 ret = ppc_elf_link_hash_table_create (abfd);
8322 if (ret)
8323 {
8324 struct ppc_elf_link_hash_table *htab
8325 = (struct ppc_elf_link_hash_table *)ret;
8326 htab->is_vxworks = 1;
4a3dc543 8327 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
8328 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8329 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8330 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8331 }
8332 return ret;
8333}
8334
8335/* Tweak magic VxWorks symbols as they are loaded. */
8336static bfd_boolean
8337ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8338 struct bfd_link_info *info,
8339 Elf_Internal_Sym *sym,
8340 const char **namep ATTRIBUTE_UNUSED,
8341 flagword *flagsp ATTRIBUTE_UNUSED,
8342 asection **secp,
8343 bfd_vma *valp)
8344{
8345 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8346 valp))
8347 return FALSE;
8348
8349 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8350}
8351
9d8504b1
PB
8352static void
8353ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8354{
8355 ppc_elf_final_write_processing(abfd, linker);
8356 elf_vxworks_final_write_processing(abfd, linker);
8357}
8358
8359/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8360 define it. */
8361#undef elf_backend_want_plt_sym
8362#define elf_backend_want_plt_sym 1
8363#undef elf_backend_want_got_plt
8364#define elf_backend_want_got_plt 1
8365#undef elf_backend_got_symbol_offset
8366#define elf_backend_got_symbol_offset 0
8367#undef elf_backend_plt_not_loaded
8368#define elf_backend_plt_not_loaded 0
8369#undef elf_backend_plt_readonly
8370#define elf_backend_plt_readonly 1
8371#undef elf_backend_got_header_size
8372#define elf_backend_got_header_size 12
8373
468392fb
AM
8374#undef bfd_elf32_get_synthetic_symtab
8375
9d8504b1
PB
8376#undef bfd_elf32_bfd_link_hash_table_create
8377#define bfd_elf32_bfd_link_hash_table_create \
8378 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
8379#undef elf_backend_add_symbol_hook
8380#define elf_backend_add_symbol_hook \
8381 ppc_elf_vxworks_add_symbol_hook
8382#undef elf_backend_link_output_symbol_hook
8383#define elf_backend_link_output_symbol_hook \
9c72ff84 8384 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
8385#undef elf_backend_final_write_processing
8386#define elf_backend_final_write_processing \
8387 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
8388#undef elf_backend_get_sec_type_attr
8389#define elf_backend_get_sec_type_attr \
8390 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
8391#undef elf_backend_emit_relocs
8392#define elf_backend_emit_relocs \
8393 elf_vxworks_emit_relocs
8394
8395#undef elf32_bed
8396#define elf32_bed ppc_elf_vxworks_bed
8397
8398#include "elf32-target.h"
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