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[thirdparty/binutils-gdb.git] / bfd / elf32-ppc.c
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252b5132 1/* PowerPC-specific support for 32-bit ELF
051d5130 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
75cd47ed 3 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
25f53a85 4 Free Software Foundation, Inc.
252b5132
RH
5 Written by Ian Lance Taylor, Cygnus Support.
6
ae9a127f 7 This file is part of BFD, the Binary File Descriptor library.
252b5132 8
ae9a127f
NC
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
cd123cb7 11 the Free Software Foundation; either version 3 of the License, or
ae9a127f 12 (at your option) any later version.
252b5132 13
ae9a127f
NC
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
252b5132 18
ae9a127f 19 You should have received a copy of the GNU General Public License
fc0bffd6 20 along with this program; if not, write to the
3e110533 21 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
53e09e0a 22 Boston, MA 02110-1301, USA. */
252b5132 23
cd123cb7 24
252b5132
RH
25/* This file is based on a preliminary PowerPC ELF ABI. The
26 information may not match the final PowerPC ELF ABI. It includes
27 suggestions from the in-progress Embedded PowerPC ABI, and that
28 information may also not match. */
29
3db64b00 30#include "sysdep.h"
183e98be 31#include <stdarg.h>
252b5132 32#include "bfd.h"
252b5132
RH
33#include "bfdlink.h"
34#include "libbfd.h"
35#include "elf-bfd.h"
36#include "elf/ppc.h"
7619e7c7 37#include "elf32-ppc.h"
9d8504b1 38#include "elf-vxworks.h"
6177242a 39#include "dwarf2.h"
70a38d42 40#include "elf-linux-psinfo.h"
252b5132 41
b9c361e0
JL
42typedef enum split16_format_type
43{
44 split16a_type = 0,
45 split16d_type
46}
47split16_format_type;
48
f0fe0e16 49/* RELA relocations are used here. */
252b5132 50
252b5132 51static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 53static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
b9c361e0
JL
55static void ppc_elf_vle_split16
56 (bfd *, bfd_byte *, bfd_vma, bfd_vma, split16_format_type);
252b5132 57
70bccea4
AM
58/* Branch prediction bit for branch taken relocs. */
59#define BRANCH_PREDICT_BIT 0x200000
60/* Mask to set RA in memory instructions. */
61#define RA_REGISTER_MASK 0x001f0000
62/* Value to shift register by to insert RA. */
63#define RA_REGISTER_SHIFT 16
252b5132
RH
64
65/* The name of the dynamic interpreter. This is put in the .interp
66 section. */
252b5132
RH
67#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
68
d7128ce4 69/* For old-style PLT. */
252b5132
RH
70/* The number of single-slot PLT entries (the rest use two slots). */
71#define PLT_NUM_SINGLE_ENTRIES 8192
72
d7128ce4 73/* For new-style .glink and .plt. */
a6aa5195 74#define GLINK_PLTRESOLVE 16*4
d7128ce4 75#define GLINK_ENTRY_SIZE 4*4
a7f2871e 76#define TLS_GET_ADDR_GLINK_SIZE 12*4
d7128ce4 77
9d8504b1
PB
78/* VxWorks uses its own plt layout, filled in by the static linker. */
79
80/* The standard VxWorks PLT entry. */
81#define VXWORKS_PLT_ENTRY_SIZE 32
82static const bfd_vma ppc_elf_vxworks_plt_entry
83 [VXWORKS_PLT_ENTRY_SIZE / 4] =
84 {
85 0x3d800000, /* lis r12,0 */
86 0x818c0000, /* lwz r12,0(r12) */
87 0x7d8903a6, /* mtctr r12 */
88 0x4e800420, /* bctr */
89 0x39600000, /* li r11,0 */
90 0x48000000, /* b 14 <.PLT0resolve+0x4> */
91 0x60000000, /* nop */
92 0x60000000, /* nop */
93 };
94static const bfd_vma ppc_elf_vxworks_pic_plt_entry
95 [VXWORKS_PLT_ENTRY_SIZE / 4] =
96 {
97 0x3d9e0000, /* addis r12,r30,0 */
98 0x818c0000, /* lwz r12,0(r12) */
99 0x7d8903a6, /* mtctr r12 */
100 0x4e800420, /* bctr */
101 0x39600000, /* li r11,0 */
102 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
103 0x60000000, /* nop */
104 0x60000000, /* nop */
105 };
106
107/* The initial VxWorks PLT entry. */
108#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
109static const bfd_vma ppc_elf_vxworks_plt0_entry
110 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
111 {
112 0x3d800000, /* lis r12,0 */
113 0x398c0000, /* addi r12,r12,0 */
114 0x800c0008, /* lwz r0,8(r12) */
115 0x7c0903a6, /* mtctr r0 */
116 0x818c0004, /* lwz r12,4(r12) */
117 0x4e800420, /* bctr */
118 0x60000000, /* nop */
119 0x60000000, /* nop */
120 };
121static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
122 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
123 {
124 0x819e0008, /* lwz r12,8(r30) */
125 0x7d8903a6, /* mtctr r12 */
126 0x819e0004, /* lwz r12,4(r30) */
127 0x4e800420, /* bctr */
128 0x60000000, /* nop */
129 0x60000000, /* nop */
130 0x60000000, /* nop */
131 0x60000000, /* nop */
132 };
133
134/* For executables, we have some additional relocations in
135 .rela.plt.unloaded, for the kernel loader. */
136
137/* The number of non-JMP_SLOT relocations per PLT0 slot. */
138#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
139/* The number of relocations in the PLTResolve slot. */
140#define VXWORKS_PLTRESOLVE_RELOCS 2
141/* The number of relocations in the PLTResolve slot when when creating
142 a shared library. */
143#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
144
d7128ce4 145/* Some instructions. */
d7128ce4 146#define ADDIS_11_11 0x3d6b0000
a6aa5195
AM
147#define ADDIS_11_30 0x3d7e0000
148#define ADDIS_12_12 0x3d8c0000
d7128ce4 149#define ADDI_11_11 0x396b0000
d7128ce4 150#define ADD_0_11_11 0x7c0b5a14
a7f2871e 151#define ADD_3_12_2 0x7c6c1214
d7128ce4 152#define ADD_11_0_11 0x7d605a14
a6aa5195
AM
153#define B 0x48000000
154#define BCL_20_31 0x429f0005
d7128ce4 155#define BCTR 0x4e800420
a7f2871e
AM
156#define BEQLR 0x4d820020
157#define CMPWI_11_0 0x2c0b0000
7e8aeb9a
AM
158#define LIS_11 0x3d600000
159#define LIS_12 0x3d800000
a6aa5195
AM
160#define LWZU_0_12 0x840c0000
161#define LWZ_0_12 0x800c0000
a7f2871e 162#define LWZ_11_3 0x81630000
a6aa5195
AM
163#define LWZ_11_11 0x816b0000
164#define LWZ_11_30 0x817e0000
a7f2871e 165#define LWZ_12_3 0x81830000
a6aa5195 166#define LWZ_12_12 0x818c0000
a7f2871e
AM
167#define MR_0_3 0x7c601b78
168#define MR_3_0 0x7c030378
a6aa5195
AM
169#define MFLR_0 0x7c0802a6
170#define MFLR_12 0x7d8802a6
171#define MTCTR_0 0x7c0903a6
172#define MTCTR_11 0x7d6903a6
173#define MTLR_0 0x7c0803a6
174#define NOP 0x60000000
175#define SUB_11_11_12 0x7d6c5850
7619e7c7
AM
176
177/* Offset of tp and dtp pointers from start of TLS block. */
178#define TP_OFFSET 0x7000
179#define DTP_OFFSET 0x8000
e87d4038
AM
180
181/* The value of a defined global symbol. */
182#define SYM_VAL(SYM) \
183 ((SYM)->root.u.def.section->output_section->vma \
184 + (SYM)->root.u.def.section->output_offset \
185 + (SYM)->root.u.def.value)
7fce784e 186\f
e47cd125 187static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 188
8da6118f 189static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH
190 /* This reloc does nothing. */
191 HOWTO (R_PPC_NONE, /* type */
192 0, /* rightshift */
193 2, /* size (0 = byte, 1 = short, 2 = long) */
194 32, /* bitsize */
b34976b6 195 FALSE, /* pc_relative */
252b5132
RH
196 0, /* bitpos */
197 complain_overflow_bitfield, /* complain_on_overflow */
198 bfd_elf_generic_reloc, /* special_function */
199 "R_PPC_NONE", /* name */
b34976b6 200 FALSE, /* partial_inplace */
252b5132
RH
201 0, /* src_mask */
202 0, /* dst_mask */
b34976b6 203 FALSE), /* pcrel_offset */
252b5132
RH
204
205 /* A standard 32 bit relocation. */
206 HOWTO (R_PPC_ADDR32, /* type */
207 0, /* rightshift */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
209 32, /* bitsize */
b34976b6 210 FALSE, /* pc_relative */
252b5132
RH
211 0, /* bitpos */
212 complain_overflow_bitfield, /* complain_on_overflow */
213 bfd_elf_generic_reloc, /* special_function */
214 "R_PPC_ADDR32", /* name */
b34976b6 215 FALSE, /* partial_inplace */
252b5132
RH
216 0, /* src_mask */
217 0xffffffff, /* dst_mask */
b34976b6 218 FALSE), /* pcrel_offset */
252b5132
RH
219
220 /* An absolute 26 bit branch; the lower two bits must be zero.
221 FIXME: we don't check that, we just clear them. */
222 HOWTO (R_PPC_ADDR24, /* type */
223 0, /* rightshift */
224 2, /* size (0 = byte, 1 = short, 2 = long) */
225 26, /* bitsize */
b34976b6 226 FALSE, /* pc_relative */
252b5132
RH
227 0, /* bitpos */
228 complain_overflow_bitfield, /* complain_on_overflow */
229 bfd_elf_generic_reloc, /* special_function */
230 "R_PPC_ADDR24", /* name */
b34976b6 231 FALSE, /* partial_inplace */
252b5132
RH
232 0, /* src_mask */
233 0x3fffffc, /* dst_mask */
b34976b6 234 FALSE), /* pcrel_offset */
252b5132
RH
235
236 /* A standard 16 bit relocation. */
237 HOWTO (R_PPC_ADDR16, /* type */
238 0, /* rightshift */
239 1, /* size (0 = byte, 1 = short, 2 = long) */
240 16, /* bitsize */
b34976b6 241 FALSE, /* pc_relative */
252b5132
RH
242 0, /* bitpos */
243 complain_overflow_bitfield, /* complain_on_overflow */
244 bfd_elf_generic_reloc, /* special_function */
245 "R_PPC_ADDR16", /* name */
b34976b6 246 FALSE, /* partial_inplace */
252b5132
RH
247 0, /* src_mask */
248 0xffff, /* dst_mask */
b34976b6 249 FALSE), /* pcrel_offset */
252b5132
RH
250
251 /* A 16 bit relocation without overflow. */
252 HOWTO (R_PPC_ADDR16_LO, /* type */
253 0, /* rightshift */
254 1, /* size (0 = byte, 1 = short, 2 = long) */
255 16, /* bitsize */
b34976b6 256 FALSE, /* pc_relative */
252b5132
RH
257 0, /* bitpos */
258 complain_overflow_dont,/* complain_on_overflow */
259 bfd_elf_generic_reloc, /* special_function */
260 "R_PPC_ADDR16_LO", /* name */
b34976b6 261 FALSE, /* partial_inplace */
252b5132
RH
262 0, /* src_mask */
263 0xffff, /* dst_mask */
b34976b6 264 FALSE), /* pcrel_offset */
252b5132
RH
265
266 /* The high order 16 bits of an address. */
267 HOWTO (R_PPC_ADDR16_HI, /* type */
268 16, /* rightshift */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
270 16, /* bitsize */
b34976b6 271 FALSE, /* pc_relative */
252b5132
RH
272 0, /* bitpos */
273 complain_overflow_dont, /* complain_on_overflow */
274 bfd_elf_generic_reloc, /* special_function */
275 "R_PPC_ADDR16_HI", /* name */
b34976b6 276 FALSE, /* partial_inplace */
252b5132
RH
277 0, /* src_mask */
278 0xffff, /* dst_mask */
b34976b6 279 FALSE), /* pcrel_offset */
252b5132
RH
280
281 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 282 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH
283 HOWTO (R_PPC_ADDR16_HA, /* type */
284 16, /* rightshift */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
286 16, /* bitsize */
b34976b6 287 FALSE, /* pc_relative */
252b5132
RH
288 0, /* bitpos */
289 complain_overflow_dont, /* complain_on_overflow */
290 ppc_elf_addr16_ha_reloc, /* special_function */
291 "R_PPC_ADDR16_HA", /* name */
b34976b6 292 FALSE, /* partial_inplace */
252b5132
RH
293 0, /* src_mask */
294 0xffff, /* dst_mask */
b34976b6 295 FALSE), /* pcrel_offset */
252b5132
RH
296
297 /* An absolute 16 bit branch; the lower two bits must be zero.
298 FIXME: we don't check that, we just clear them. */
299 HOWTO (R_PPC_ADDR14, /* type */
300 0, /* rightshift */
301 2, /* size (0 = byte, 1 = short, 2 = long) */
302 16, /* bitsize */
b34976b6 303 FALSE, /* pc_relative */
252b5132
RH
304 0, /* bitpos */
305 complain_overflow_bitfield, /* complain_on_overflow */
306 bfd_elf_generic_reloc, /* special_function */
307 "R_PPC_ADDR14", /* name */
b34976b6 308 FALSE, /* partial_inplace */
252b5132
RH
309 0, /* src_mask */
310 0xfffc, /* dst_mask */
b34976b6 311 FALSE), /* pcrel_offset */
252b5132
RH
312
313 /* An absolute 16 bit branch, for which bit 10 should be set to
314 indicate that the branch is expected to be taken. The lower two
8da6118f 315 bits must be zero. */
252b5132
RH
316 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
317 0, /* rightshift */
318 2, /* size (0 = byte, 1 = short, 2 = long) */
319 16, /* bitsize */
b34976b6 320 FALSE, /* pc_relative */
252b5132
RH
321 0, /* bitpos */
322 complain_overflow_bitfield, /* complain_on_overflow */
323 bfd_elf_generic_reloc, /* special_function */
324 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 325 FALSE, /* partial_inplace */
252b5132
RH
326 0, /* src_mask */
327 0xfffc, /* dst_mask */
b34976b6 328 FALSE), /* pcrel_offset */
252b5132
RH
329
330 /* An absolute 16 bit branch, for which bit 10 should be set to
331 indicate that the branch is not expected to be taken. The lower
332 two bits must be zero. */
333 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
334 0, /* rightshift */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
336 16, /* bitsize */
b34976b6 337 FALSE, /* pc_relative */
252b5132
RH
338 0, /* bitpos */
339 complain_overflow_bitfield, /* complain_on_overflow */
340 bfd_elf_generic_reloc, /* special_function */
341 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 342 FALSE, /* partial_inplace */
252b5132
RH
343 0, /* src_mask */
344 0xfffc, /* dst_mask */
b34976b6 345 FALSE), /* pcrel_offset */
252b5132 346
8da6118f 347 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH
348 HOWTO (R_PPC_REL24, /* type */
349 0, /* rightshift */
350 2, /* size (0 = byte, 1 = short, 2 = long) */
351 26, /* bitsize */
b34976b6 352 TRUE, /* pc_relative */
252b5132
RH
353 0, /* bitpos */
354 complain_overflow_signed, /* complain_on_overflow */
355 bfd_elf_generic_reloc, /* special_function */
356 "R_PPC_REL24", /* name */
b34976b6 357 FALSE, /* partial_inplace */
252b5132
RH
358 0, /* src_mask */
359 0x3fffffc, /* dst_mask */
b34976b6 360 TRUE), /* pcrel_offset */
252b5132 361
8da6118f 362 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH
363 HOWTO (R_PPC_REL14, /* type */
364 0, /* rightshift */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
366 16, /* bitsize */
b34976b6 367 TRUE, /* pc_relative */
252b5132
RH
368 0, /* bitpos */
369 complain_overflow_signed, /* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_PPC_REL14", /* name */
b34976b6 372 FALSE, /* partial_inplace */
252b5132
RH
373 0, /* src_mask */
374 0xfffc, /* dst_mask */
b34976b6 375 TRUE), /* pcrel_offset */
252b5132 376
8da6118f 377 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
378 the branch is expected to be taken. The lower two bits must be
379 zero. */
380 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
381 0, /* rightshift */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
383 16, /* bitsize */
b34976b6 384 TRUE, /* pc_relative */
252b5132
RH
385 0, /* bitpos */
386 complain_overflow_signed, /* complain_on_overflow */
387 bfd_elf_generic_reloc, /* special_function */
388 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 389 FALSE, /* partial_inplace */
252b5132
RH
390 0, /* src_mask */
391 0xfffc, /* dst_mask */
b34976b6 392 TRUE), /* pcrel_offset */
252b5132 393
8da6118f 394 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH
395 the branch is not expected to be taken. The lower two bits must
396 be zero. */
397 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
398 0, /* rightshift */
399 2, /* size (0 = byte, 1 = short, 2 = long) */
400 16, /* bitsize */
b34976b6 401 TRUE, /* pc_relative */
252b5132
RH
402 0, /* bitpos */
403 complain_overflow_signed, /* complain_on_overflow */
404 bfd_elf_generic_reloc, /* special_function */
405 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 406 FALSE, /* partial_inplace */
252b5132
RH
407 0, /* src_mask */
408 0xfffc, /* dst_mask */
b34976b6 409 TRUE), /* pcrel_offset */
252b5132
RH
410
411 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
412 symbol. */
413 HOWTO (R_PPC_GOT16, /* type */
414 0, /* rightshift */
415 1, /* size (0 = byte, 1 = short, 2 = long) */
416 16, /* bitsize */
b34976b6 417 FALSE, /* pc_relative */
252b5132
RH
418 0, /* bitpos */
419 complain_overflow_signed, /* complain_on_overflow */
420 bfd_elf_generic_reloc, /* special_function */
421 "R_PPC_GOT16", /* name */
b34976b6 422 FALSE, /* partial_inplace */
252b5132
RH
423 0, /* src_mask */
424 0xffff, /* dst_mask */
b34976b6 425 FALSE), /* pcrel_offset */
252b5132
RH
426
427 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
428 the symbol. */
429 HOWTO (R_PPC_GOT16_LO, /* type */
430 0, /* rightshift */
431 1, /* size (0 = byte, 1 = short, 2 = long) */
432 16, /* bitsize */
b34976b6 433 FALSE, /* pc_relative */
252b5132
RH
434 0, /* bitpos */
435 complain_overflow_dont, /* complain_on_overflow */
436 bfd_elf_generic_reloc, /* special_function */
437 "R_PPC_GOT16_LO", /* name */
b34976b6 438 FALSE, /* partial_inplace */
252b5132
RH
439 0, /* src_mask */
440 0xffff, /* dst_mask */
b34976b6 441 FALSE), /* pcrel_offset */
252b5132
RH
442
443 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
444 the symbol. */
445 HOWTO (R_PPC_GOT16_HI, /* type */
446 16, /* rightshift */
447 1, /* size (0 = byte, 1 = short, 2 = long) */
448 16, /* bitsize */
b34976b6 449 FALSE, /* pc_relative */
252b5132
RH
450 0, /* bitpos */
451 complain_overflow_bitfield, /* complain_on_overflow */
452 bfd_elf_generic_reloc, /* special_function */
453 "R_PPC_GOT16_HI", /* name */
b34976b6 454 FALSE, /* partial_inplace */
252b5132
RH
455 0, /* src_mask */
456 0xffff, /* dst_mask */
b34976b6 457 FALSE), /* pcrel_offset */
252b5132
RH
458
459 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
460 the symbol. */
461 HOWTO (R_PPC_GOT16_HA, /* type */
462 16, /* rightshift */
463 1, /* size (0 = byte, 1 = short, 2 = long) */
464 16, /* bitsize */
b34976b6 465 FALSE, /* pc_relative */
252b5132
RH
466 0, /* bitpos */
467 complain_overflow_bitfield, /* complain_on_overflow */
468 ppc_elf_addr16_ha_reloc, /* special_function */
469 "R_PPC_GOT16_HA", /* name */
b34976b6 470 FALSE, /* partial_inplace */
252b5132
RH
471 0, /* src_mask */
472 0xffff, /* dst_mask */
b34976b6 473 FALSE), /* pcrel_offset */
252b5132
RH
474
475 /* Like R_PPC_REL24, but referring to the procedure linkage table
476 entry for the symbol. */
477 HOWTO (R_PPC_PLTREL24, /* type */
478 0, /* rightshift */
479 2, /* size (0 = byte, 1 = short, 2 = long) */
480 26, /* bitsize */
b34976b6 481 TRUE, /* pc_relative */
252b5132
RH
482 0, /* bitpos */
483 complain_overflow_signed, /* complain_on_overflow */
484 bfd_elf_generic_reloc, /* special_function */
485 "R_PPC_PLTREL24", /* name */
b34976b6 486 FALSE, /* partial_inplace */
252b5132
RH
487 0, /* src_mask */
488 0x3fffffc, /* dst_mask */
b34976b6 489 TRUE), /* pcrel_offset */
252b5132
RH
490
491 /* This is used only by the dynamic linker. The symbol should exist
492 both in the object being run and in some shared library. The
493 dynamic linker copies the data addressed by the symbol from the
494 shared library into the object, because the object being
495 run has to have the data at some particular address. */
496 HOWTO (R_PPC_COPY, /* type */
497 0, /* rightshift */
498 2, /* size (0 = byte, 1 = short, 2 = long) */
499 32, /* bitsize */
b34976b6 500 FALSE, /* pc_relative */
252b5132
RH
501 0, /* bitpos */
502 complain_overflow_bitfield, /* complain_on_overflow */
503 bfd_elf_generic_reloc, /* special_function */
504 "R_PPC_COPY", /* name */
b34976b6 505 FALSE, /* partial_inplace */
252b5132
RH
506 0, /* src_mask */
507 0, /* dst_mask */
b34976b6 508 FALSE), /* pcrel_offset */
252b5132
RH
509
510 /* Like R_PPC_ADDR32, but used when setting global offset table
511 entries. */
512 HOWTO (R_PPC_GLOB_DAT, /* type */
513 0, /* rightshift */
514 2, /* size (0 = byte, 1 = short, 2 = long) */
515 32, /* bitsize */
b34976b6 516 FALSE, /* pc_relative */
252b5132
RH
517 0, /* bitpos */
518 complain_overflow_bitfield, /* complain_on_overflow */
519 bfd_elf_generic_reloc, /* special_function */
520 "R_PPC_GLOB_DAT", /* name */
b34976b6 521 FALSE, /* partial_inplace */
252b5132
RH
522 0, /* src_mask */
523 0xffffffff, /* dst_mask */
b34976b6 524 FALSE), /* pcrel_offset */
252b5132
RH
525
526 /* Marks a procedure linkage table entry for a symbol. */
527 HOWTO (R_PPC_JMP_SLOT, /* type */
528 0, /* rightshift */
529 2, /* size (0 = byte, 1 = short, 2 = long) */
530 32, /* bitsize */
b34976b6 531 FALSE, /* pc_relative */
252b5132
RH
532 0, /* bitpos */
533 complain_overflow_bitfield, /* complain_on_overflow */
534 bfd_elf_generic_reloc, /* special_function */
535 "R_PPC_JMP_SLOT", /* name */
b34976b6 536 FALSE, /* partial_inplace */
252b5132
RH
537 0, /* src_mask */
538 0, /* dst_mask */
b34976b6 539 FALSE), /* pcrel_offset */
252b5132
RH
540
541 /* Used only by the dynamic linker. When the object is run, this
542 longword is set to the load address of the object, plus the
543 addend. */
544 HOWTO (R_PPC_RELATIVE, /* type */
545 0, /* rightshift */
546 2, /* size (0 = byte, 1 = short, 2 = long) */
547 32, /* bitsize */
b34976b6 548 FALSE, /* pc_relative */
252b5132
RH
549 0, /* bitpos */
550 complain_overflow_bitfield, /* complain_on_overflow */
551 bfd_elf_generic_reloc, /* special_function */
552 "R_PPC_RELATIVE", /* name */
b34976b6 553 FALSE, /* partial_inplace */
252b5132
RH
554 0, /* src_mask */
555 0xffffffff, /* dst_mask */
b34976b6 556 FALSE), /* pcrel_offset */
252b5132
RH
557
558 /* Like R_PPC_REL24, but uses the value of the symbol within the
559 object rather than the final value. Normally used for
560 _GLOBAL_OFFSET_TABLE_. */
561 HOWTO (R_PPC_LOCAL24PC, /* type */
562 0, /* rightshift */
563 2, /* size (0 = byte, 1 = short, 2 = long) */
564 26, /* bitsize */
b34976b6 565 TRUE, /* pc_relative */
252b5132
RH
566 0, /* bitpos */
567 complain_overflow_signed, /* complain_on_overflow */
568 bfd_elf_generic_reloc, /* special_function */
569 "R_PPC_LOCAL24PC", /* name */
b34976b6 570 FALSE, /* partial_inplace */
252b5132
RH
571 0, /* src_mask */
572 0x3fffffc, /* dst_mask */
b34976b6 573 TRUE), /* pcrel_offset */
252b5132
RH
574
575 /* Like R_PPC_ADDR32, but may be unaligned. */
576 HOWTO (R_PPC_UADDR32, /* type */
577 0, /* rightshift */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
579 32, /* bitsize */
b34976b6 580 FALSE, /* pc_relative */
252b5132
RH
581 0, /* bitpos */
582 complain_overflow_bitfield, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_PPC_UADDR32", /* name */
b34976b6 585 FALSE, /* partial_inplace */
252b5132
RH
586 0, /* src_mask */
587 0xffffffff, /* dst_mask */
b34976b6 588 FALSE), /* pcrel_offset */
252b5132
RH
589
590 /* Like R_PPC_ADDR16, but may be unaligned. */
591 HOWTO (R_PPC_UADDR16, /* type */
592 0, /* rightshift */
593 1, /* size (0 = byte, 1 = short, 2 = long) */
594 16, /* bitsize */
b34976b6 595 FALSE, /* pc_relative */
252b5132
RH
596 0, /* bitpos */
597 complain_overflow_bitfield, /* complain_on_overflow */
598 bfd_elf_generic_reloc, /* special_function */
599 "R_PPC_UADDR16", /* name */
b34976b6 600 FALSE, /* partial_inplace */
252b5132
RH
601 0, /* src_mask */
602 0xffff, /* dst_mask */
b34976b6 603 FALSE), /* pcrel_offset */
252b5132
RH
604
605 /* 32-bit PC relative */
606 HOWTO (R_PPC_REL32, /* type */
607 0, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 32, /* bitsize */
b34976b6 610 TRUE, /* pc_relative */
252b5132
RH
611 0, /* bitpos */
612 complain_overflow_bitfield, /* complain_on_overflow */
613 bfd_elf_generic_reloc, /* special_function */
614 "R_PPC_REL32", /* name */
b34976b6 615 FALSE, /* partial_inplace */
252b5132
RH
616 0, /* src_mask */
617 0xffffffff, /* dst_mask */
b34976b6 618 TRUE), /* pcrel_offset */
252b5132
RH
619
620 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 621 FIXME: not supported. */
252b5132
RH
622 HOWTO (R_PPC_PLT32, /* type */
623 0, /* rightshift */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
625 32, /* bitsize */
b34976b6 626 FALSE, /* pc_relative */
252b5132
RH
627 0, /* bitpos */
628 complain_overflow_bitfield, /* complain_on_overflow */
629 bfd_elf_generic_reloc, /* special_function */
630 "R_PPC_PLT32", /* name */
b34976b6 631 FALSE, /* partial_inplace */
252b5132
RH
632 0, /* src_mask */
633 0, /* dst_mask */
b34976b6 634 FALSE), /* pcrel_offset */
252b5132
RH
635
636 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 637 FIXME: not supported. */
252b5132
RH
638 HOWTO (R_PPC_PLTREL32, /* type */
639 0, /* rightshift */
640 2, /* size (0 = byte, 1 = short, 2 = long) */
641 32, /* bitsize */
b34976b6 642 TRUE, /* pc_relative */
252b5132
RH
643 0, /* bitpos */
644 complain_overflow_bitfield, /* complain_on_overflow */
645 bfd_elf_generic_reloc, /* special_function */
646 "R_PPC_PLTREL32", /* name */
b34976b6 647 FALSE, /* partial_inplace */
252b5132
RH
648 0, /* src_mask */
649 0, /* dst_mask */
b34976b6 650 TRUE), /* pcrel_offset */
252b5132
RH
651
652 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
653 the symbol. */
654 HOWTO (R_PPC_PLT16_LO, /* type */
655 0, /* rightshift */
656 1, /* size (0 = byte, 1 = short, 2 = long) */
657 16, /* bitsize */
b34976b6 658 FALSE, /* pc_relative */
252b5132
RH
659 0, /* bitpos */
660 complain_overflow_dont, /* complain_on_overflow */
661 bfd_elf_generic_reloc, /* special_function */
662 "R_PPC_PLT16_LO", /* name */
b34976b6 663 FALSE, /* partial_inplace */
252b5132
RH
664 0, /* src_mask */
665 0xffff, /* dst_mask */
b34976b6 666 FALSE), /* pcrel_offset */
252b5132
RH
667
668 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
669 the symbol. */
670 HOWTO (R_PPC_PLT16_HI, /* type */
671 16, /* rightshift */
672 1, /* size (0 = byte, 1 = short, 2 = long) */
673 16, /* bitsize */
b34976b6 674 FALSE, /* pc_relative */
252b5132
RH
675 0, /* bitpos */
676 complain_overflow_bitfield, /* complain_on_overflow */
677 bfd_elf_generic_reloc, /* special_function */
678 "R_PPC_PLT16_HI", /* name */
b34976b6 679 FALSE, /* partial_inplace */
252b5132
RH
680 0, /* src_mask */
681 0xffff, /* dst_mask */
b34976b6 682 FALSE), /* pcrel_offset */
252b5132
RH
683
684 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
685 the symbol. */
686 HOWTO (R_PPC_PLT16_HA, /* type */
687 16, /* rightshift */
688 1, /* size (0 = byte, 1 = short, 2 = long) */
689 16, /* bitsize */
b34976b6 690 FALSE, /* pc_relative */
252b5132
RH
691 0, /* bitpos */
692 complain_overflow_bitfield, /* complain_on_overflow */
693 ppc_elf_addr16_ha_reloc, /* special_function */
694 "R_PPC_PLT16_HA", /* name */
b34976b6 695 FALSE, /* partial_inplace */
252b5132
RH
696 0, /* src_mask */
697 0xffff, /* dst_mask */
b34976b6 698 FALSE), /* pcrel_offset */
252b5132
RH
699
700 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
701 small data items. */
702 HOWTO (R_PPC_SDAREL16, /* type */
703 0, /* rightshift */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
705 16, /* bitsize */
b34976b6 706 FALSE, /* pc_relative */
252b5132
RH
707 0, /* bitpos */
708 complain_overflow_signed, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_PPC_SDAREL16", /* name */
b34976b6 711 FALSE, /* partial_inplace */
252b5132
RH
712 0, /* src_mask */
713 0xffff, /* dst_mask */
b34976b6 714 FALSE), /* pcrel_offset */
252b5132 715
c061c2d8 716 /* 16-bit section relative relocation. */
252b5132
RH
717 HOWTO (R_PPC_SECTOFF, /* type */
718 0, /* rightshift */
c061c2d8
AM
719 1, /* size (0 = byte, 1 = short, 2 = long) */
720 16, /* bitsize */
b34976b6 721 FALSE, /* pc_relative */
252b5132
RH
722 0, /* bitpos */
723 complain_overflow_bitfield, /* complain_on_overflow */
724 bfd_elf_generic_reloc, /* special_function */
725 "R_PPC_SECTOFF", /* name */
b34976b6 726 FALSE, /* partial_inplace */
252b5132 727 0, /* src_mask */
c061c2d8 728 0xffff, /* dst_mask */
b34976b6 729 FALSE), /* pcrel_offset */
252b5132 730
c3668558 731 /* 16-bit lower half section relative relocation. */
252b5132
RH
732 HOWTO (R_PPC_SECTOFF_LO, /* type */
733 0, /* rightshift */
734 1, /* size (0 = byte, 1 = short, 2 = long) */
735 16, /* bitsize */
b34976b6 736 FALSE, /* pc_relative */
252b5132
RH
737 0, /* bitpos */
738 complain_overflow_dont, /* complain_on_overflow */
739 bfd_elf_generic_reloc, /* special_function */
740 "R_PPC_SECTOFF_LO", /* name */
b34976b6 741 FALSE, /* partial_inplace */
252b5132
RH
742 0, /* src_mask */
743 0xffff, /* dst_mask */
b34976b6 744 FALSE), /* pcrel_offset */
252b5132 745
c3668558 746 /* 16-bit upper half section relative relocation. */
252b5132
RH
747 HOWTO (R_PPC_SECTOFF_HI, /* type */
748 16, /* rightshift */
749 1, /* size (0 = byte, 1 = short, 2 = long) */
750 16, /* bitsize */
b34976b6 751 FALSE, /* pc_relative */
252b5132
RH
752 0, /* bitpos */
753 complain_overflow_bitfield, /* complain_on_overflow */
754 bfd_elf_generic_reloc, /* special_function */
755 "R_PPC_SECTOFF_HI", /* name */
b34976b6 756 FALSE, /* partial_inplace */
252b5132
RH
757 0, /* src_mask */
758 0xffff, /* dst_mask */
b34976b6 759 FALSE), /* pcrel_offset */
252b5132 760
c3668558 761 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH
762 HOWTO (R_PPC_SECTOFF_HA, /* type */
763 16, /* rightshift */
764 1, /* size (0 = byte, 1 = short, 2 = long) */
765 16, /* bitsize */
b34976b6 766 FALSE, /* pc_relative */
252b5132
RH
767 0, /* bitpos */
768 complain_overflow_bitfield, /* complain_on_overflow */
769 ppc_elf_addr16_ha_reloc, /* special_function */
770 "R_PPC_SECTOFF_HA", /* name */
b34976b6 771 FALSE, /* partial_inplace */
252b5132
RH
772 0, /* src_mask */
773 0xffff, /* dst_mask */
b34976b6 774 FALSE), /* pcrel_offset */
252b5132 775
727fc41e 776 /* Marker relocs for TLS. */
7619e7c7 777 HOWTO (R_PPC_TLS,
252b5132
RH
778 0, /* rightshift */
779 2, /* size (0 = byte, 1 = short, 2 = long) */
780 32, /* bitsize */
b34976b6 781 FALSE, /* pc_relative */
252b5132 782 0, /* bitpos */
7619e7c7 783 complain_overflow_dont, /* complain_on_overflow */
252b5132 784 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM
785 "R_PPC_TLS", /* name */
786 FALSE, /* partial_inplace */
787 0, /* src_mask */
788 0, /* dst_mask */
789 FALSE), /* pcrel_offset */
790
727fc41e
AM
791 HOWTO (R_PPC_TLSGD,
792 0, /* rightshift */
793 2, /* size (0 = byte, 1 = short, 2 = long) */
794 32, /* bitsize */
795 FALSE, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_PPC_TLSGD", /* name */
800 FALSE, /* partial_inplace */
801 0, /* src_mask */
802 0, /* dst_mask */
803 FALSE), /* pcrel_offset */
804
805 HOWTO (R_PPC_TLSLD,
806 0, /* rightshift */
807 2, /* size (0 = byte, 1 = short, 2 = long) */
808 32, /* bitsize */
809 FALSE, /* pc_relative */
810 0, /* bitpos */
811 complain_overflow_dont, /* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
813 "R_PPC_TLSLD", /* name */
814 FALSE, /* partial_inplace */
815 0, /* src_mask */
816 0, /* dst_mask */
817 FALSE), /* pcrel_offset */
818
7619e7c7
AM
819 /* Computes the load module index of the load module that contains the
820 definition of its TLS sym. */
821 HOWTO (R_PPC_DTPMOD32,
822 0, /* rightshift */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
824 32, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 ppc_elf_unhandled_reloc, /* special_function */
829 "R_PPC_DTPMOD32", /* name */
b34976b6 830 FALSE, /* partial_inplace */
252b5132
RH
831 0, /* src_mask */
832 0xffffffff, /* dst_mask */
b34976b6 833 FALSE), /* pcrel_offset */
252b5132 834
7619e7c7
AM
835 /* Computes a dtv-relative displacement, the difference between the value
836 of sym+add and the base address of the thread-local storage block that
837 contains the definition of sym, minus 0x8000. */
838 HOWTO (R_PPC_DTPREL32,
839 0, /* rightshift */
840 2, /* size (0 = byte, 1 = short, 2 = long) */
841 32, /* bitsize */
842 FALSE, /* pc_relative */
843 0, /* bitpos */
844 complain_overflow_dont, /* complain_on_overflow */
845 ppc_elf_unhandled_reloc, /* special_function */
846 "R_PPC_DTPREL32", /* name */
847 FALSE, /* partial_inplace */
848 0, /* src_mask */
849 0xffffffff, /* dst_mask */
850 FALSE), /* pcrel_offset */
851
852 /* A 16 bit dtprel reloc. */
853 HOWTO (R_PPC_DTPREL16,
252b5132
RH
854 0, /* rightshift */
855 1, /* size (0 = byte, 1 = short, 2 = long) */
856 16, /* bitsize */
b34976b6 857 FALSE, /* pc_relative */
252b5132 858 0, /* bitpos */
7619e7c7
AM
859 complain_overflow_signed, /* complain_on_overflow */
860 ppc_elf_unhandled_reloc, /* special_function */
861 "R_PPC_DTPREL16", /* name */
b34976b6 862 FALSE, /* partial_inplace */
252b5132
RH
863 0, /* src_mask */
864 0xffff, /* dst_mask */
b34976b6 865 FALSE), /* pcrel_offset */
252b5132 866
7619e7c7
AM
867 /* Like DTPREL16, but no overflow. */
868 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH
869 0, /* rightshift */
870 1, /* size (0 = byte, 1 = short, 2 = long) */
871 16, /* bitsize */
b34976b6 872 FALSE, /* pc_relative */
252b5132 873 0, /* bitpos */
7619e7c7
AM
874 complain_overflow_dont, /* complain_on_overflow */
875 ppc_elf_unhandled_reloc, /* special_function */
876 "R_PPC_DTPREL16_LO", /* name */
b34976b6 877 FALSE, /* partial_inplace */
252b5132
RH
878 0, /* src_mask */
879 0xffff, /* dst_mask */
b34976b6 880 FALSE), /* pcrel_offset */
252b5132 881
7619e7c7
AM
882 /* Like DTPREL16_LO, but next higher group of 16 bits. */
883 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH
884 16, /* rightshift */
885 1, /* size (0 = byte, 1 = short, 2 = long) */
886 16, /* bitsize */
b34976b6 887 FALSE, /* pc_relative */
252b5132
RH
888 0, /* bitpos */
889 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
890 ppc_elf_unhandled_reloc, /* special_function */
891 "R_PPC_DTPREL16_HI", /* name */
b34976b6 892 FALSE, /* partial_inplace */
252b5132
RH
893 0, /* src_mask */
894 0xffff, /* dst_mask */
b34976b6 895 FALSE), /* pcrel_offset */
252b5132 896
7619e7c7
AM
897 /* Like DTPREL16_HI, but adjust for low 16 bits. */
898 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH
899 16, /* rightshift */
900 1, /* size (0 = byte, 1 = short, 2 = long) */
901 16, /* bitsize */
b34976b6 902 FALSE, /* pc_relative */
252b5132
RH
903 0, /* bitpos */
904 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
905 ppc_elf_unhandled_reloc, /* special_function */
906 "R_PPC_DTPREL16_HA", /* name */
b34976b6 907 FALSE, /* partial_inplace */
252b5132
RH
908 0, /* src_mask */
909 0xffff, /* dst_mask */
b34976b6 910 FALSE), /* pcrel_offset */
252b5132 911
7619e7c7
AM
912 /* Computes a tp-relative displacement, the difference between the value of
913 sym+add and the value of the thread pointer (r13). */
914 HOWTO (R_PPC_TPREL32,
915 0, /* rightshift */
916 2, /* size (0 = byte, 1 = short, 2 = long) */
917 32, /* bitsize */
918 FALSE, /* pc_relative */
919 0, /* bitpos */
920 complain_overflow_dont, /* complain_on_overflow */
921 ppc_elf_unhandled_reloc, /* special_function */
922 "R_PPC_TPREL32", /* name */
923 FALSE, /* partial_inplace */
924 0, /* src_mask */
925 0xffffffff, /* dst_mask */
926 FALSE), /* pcrel_offset */
927
928 /* A 16 bit tprel reloc. */
929 HOWTO (R_PPC_TPREL16,
252b5132
RH
930 0, /* rightshift */
931 1, /* size (0 = byte, 1 = short, 2 = long) */
932 16, /* bitsize */
b34976b6 933 FALSE, /* pc_relative */
252b5132 934 0, /* bitpos */
7619e7c7
AM
935 complain_overflow_signed, /* complain_on_overflow */
936 ppc_elf_unhandled_reloc, /* special_function */
937 "R_PPC_TPREL16", /* name */
b34976b6 938 FALSE, /* partial_inplace */
252b5132
RH
939 0, /* src_mask */
940 0xffff, /* dst_mask */
b34976b6 941 FALSE), /* pcrel_offset */
252b5132 942
7619e7c7
AM
943 /* Like TPREL16, but no overflow. */
944 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH
945 0, /* rightshift */
946 1, /* size (0 = byte, 1 = short, 2 = long) */
947 16, /* bitsize */
b34976b6 948 FALSE, /* pc_relative */
252b5132 949 0, /* bitpos */
7619e7c7
AM
950 complain_overflow_dont, /* complain_on_overflow */
951 ppc_elf_unhandled_reloc, /* special_function */
952 "R_PPC_TPREL16_LO", /* name */
b34976b6 953 FALSE, /* partial_inplace */
252b5132
RH
954 0, /* src_mask */
955 0xffff, /* dst_mask */
b34976b6 956 FALSE), /* pcrel_offset */
252b5132 957
7619e7c7
AM
958 /* Like TPREL16_LO, but next higher group of 16 bits. */
959 HOWTO (R_PPC_TPREL16_HI,
960 16, /* rightshift */
961 1, /* size (0 = byte, 1 = short, 2 = long) */
962 16, /* bitsize */
963 FALSE, /* pc_relative */
964 0, /* bitpos */
965 complain_overflow_dont, /* complain_on_overflow */
966 ppc_elf_unhandled_reloc, /* special_function */
967 "R_PPC_TPREL16_HI", /* name */
968 FALSE, /* partial_inplace */
969 0, /* src_mask */
970 0xffff, /* dst_mask */
971 FALSE), /* pcrel_offset */
972
973 /* Like TPREL16_HI, but adjust for low 16 bits. */
974 HOWTO (R_PPC_TPREL16_HA,
975 16, /* rightshift */
976 1, /* size (0 = byte, 1 = short, 2 = long) */
977 16, /* bitsize */
978 FALSE, /* pc_relative */
979 0, /* bitpos */
980 complain_overflow_dont, /* complain_on_overflow */
981 ppc_elf_unhandled_reloc, /* special_function */
982 "R_PPC_TPREL16_HA", /* name */
983 FALSE, /* partial_inplace */
984 0, /* src_mask */
985 0xffff, /* dst_mask */
986 FALSE), /* pcrel_offset */
987
988 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
989 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
990 to the first entry. */
991 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH
992 0, /* rightshift */
993 1, /* size (0 = byte, 1 = short, 2 = long) */
994 16, /* bitsize */
b34976b6 995 FALSE, /* pc_relative */
252b5132
RH
996 0, /* bitpos */
997 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
998 ppc_elf_unhandled_reloc, /* special_function */
999 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 1000 FALSE, /* partial_inplace */
252b5132
RH
1001 0, /* src_mask */
1002 0xffff, /* dst_mask */
b34976b6 1003 FALSE), /* pcrel_offset */
252b5132 1004
7619e7c7
AM
1005 /* Like GOT_TLSGD16, but no overflow. */
1006 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 1007 0, /* rightshift */
7619e7c7 1008 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 1009 16, /* bitsize */
b34976b6 1010 FALSE, /* pc_relative */
252b5132 1011 0, /* bitpos */
7619e7c7
AM
1012 complain_overflow_dont, /* complain_on_overflow */
1013 ppc_elf_unhandled_reloc, /* special_function */
1014 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 1015 FALSE, /* partial_inplace */
252b5132
RH
1016 0, /* src_mask */
1017 0xffff, /* dst_mask */
b34976b6 1018 FALSE), /* pcrel_offset */
252b5132 1019
7619e7c7
AM
1020 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1021 HOWTO (R_PPC_GOT_TLSGD16_HI,
1022 16, /* rightshift */
1023 1, /* size (0 = byte, 1 = short, 2 = long) */
1024 16, /* bitsize */
1025 FALSE, /* pc_relative */
1026 0, /* bitpos */
1027 complain_overflow_dont, /* complain_on_overflow */
1028 ppc_elf_unhandled_reloc, /* special_function */
1029 "R_PPC_GOT_TLSGD16_HI", /* name */
1030 FALSE, /* partial_inplace */
1031 0, /* src_mask */
1032 0xffff, /* dst_mask */
1033 FALSE), /* pcrel_offset */
252b5132 1034
7619e7c7
AM
1035 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1036 HOWTO (R_PPC_GOT_TLSGD16_HA,
1037 16, /* rightshift */
1038 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 16, /* bitsize */
1040 FALSE, /* pc_relative */
1041 0, /* bitpos */
1042 complain_overflow_dont, /* complain_on_overflow */
1043 ppc_elf_unhandled_reloc, /* special_function */
1044 "R_PPC_GOT_TLSGD16_HA", /* name */
1045 FALSE, /* partial_inplace */
1046 0, /* src_mask */
1047 0xffff, /* dst_mask */
1048 FALSE), /* pcrel_offset */
1049
1050 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1051 with values (sym+add)@dtpmod and zero, and computes the offset to the
1052 first entry. */
1053 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH
1054 0, /* rightshift */
1055 1, /* size (0 = byte, 1 = short, 2 = long) */
1056 16, /* bitsize */
7619e7c7 1057 FALSE, /* pc_relative */
252b5132
RH
1058 0, /* bitpos */
1059 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1060 ppc_elf_unhandled_reloc, /* special_function */
1061 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 1062 FALSE, /* partial_inplace */
252b5132
RH
1063 0, /* src_mask */
1064 0xffff, /* dst_mask */
b34976b6 1065 FALSE), /* pcrel_offset */
252b5132 1066
7619e7c7
AM
1067 /* Like GOT_TLSLD16, but no overflow. */
1068 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 1069 0, /* rightshift */
7619e7c7
AM
1070 1, /* size (0 = byte, 1 = short, 2 = long) */
1071 16, /* bitsize */
b34976b6 1072 FALSE, /* pc_relative */
252b5132
RH
1073 0, /* bitpos */
1074 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1075 ppc_elf_unhandled_reloc, /* special_function */
1076 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 1077 FALSE, /* partial_inplace */
252b5132 1078 0, /* src_mask */
7619e7c7 1079 0xffff, /* dst_mask */
b34976b6 1080 FALSE), /* pcrel_offset */
252b5132 1081
7619e7c7
AM
1082 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1083 HOWTO (R_PPC_GOT_TLSLD16_HI,
1084 16, /* rightshift */
1085 1, /* size (0 = byte, 1 = short, 2 = long) */
1086 16, /* bitsize */
b34976b6 1087 FALSE, /* pc_relative */
252b5132
RH
1088 0, /* bitpos */
1089 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM
1090 ppc_elf_unhandled_reloc, /* special_function */
1091 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 1092 FALSE, /* partial_inplace */
252b5132 1093 0, /* src_mask */
7619e7c7 1094 0xffff, /* dst_mask */
b34976b6 1095 FALSE), /* pcrel_offset */
252b5132 1096
7619e7c7
AM
1097 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1098 HOWTO (R_PPC_GOT_TLSLD16_HA,
1099 16, /* rightshift */
1100 1, /* size (0 = byte, 1 = short, 2 = long) */
1101 16, /* bitsize */
1102 FALSE, /* pc_relative */
1103 0, /* bitpos */
1104 complain_overflow_dont, /* complain_on_overflow */
1105 ppc_elf_unhandled_reloc, /* special_function */
1106 "R_PPC_GOT_TLSLD16_HA", /* name */
1107 FALSE, /* partial_inplace */
1108 0, /* src_mask */
1109 0xffff, /* dst_mask */
1110 FALSE), /* pcrel_offset */
1111
1112 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1113 the offset to the entry. */
1114 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH
1115 0, /* rightshift */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1117 16, /* bitsize */
b34976b6 1118 FALSE, /* pc_relative */
252b5132
RH
1119 0, /* bitpos */
1120 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM
1121 ppc_elf_unhandled_reloc, /* special_function */
1122 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 1123 FALSE, /* partial_inplace */
252b5132
RH
1124 0, /* src_mask */
1125 0xffff, /* dst_mask */
b34976b6 1126 FALSE), /* pcrel_offset */
252b5132 1127
7619e7c7
AM
1128 /* Like GOT_DTPREL16, but no overflow. */
1129 HOWTO (R_PPC_GOT_DTPREL16_LO,
1130 0, /* rightshift */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1132 16, /* bitsize */
1133 FALSE, /* pc_relative */
1134 0, /* bitpos */
1135 complain_overflow_dont, /* complain_on_overflow */
1136 ppc_elf_unhandled_reloc, /* special_function */
1137 "R_PPC_GOT_DTPREL16_LO", /* name */
1138 FALSE, /* partial_inplace */
1139 0, /* src_mask */
1140 0xffff, /* dst_mask */
1141 FALSE), /* pcrel_offset */
252b5132 1142
7619e7c7
AM
1143 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1144 HOWTO (R_PPC_GOT_DTPREL16_HI,
1145 16, /* rightshift */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1147 16, /* bitsize */
1148 FALSE, /* pc_relative */
1149 0, /* bitpos */
1150 complain_overflow_dont, /* complain_on_overflow */
1151 ppc_elf_unhandled_reloc, /* special_function */
1152 "R_PPC_GOT_DTPREL16_HI", /* name */
1153 FALSE, /* partial_inplace */
1154 0, /* src_mask */
1155 0xffff, /* dst_mask */
1156 FALSE), /* pcrel_offset */
252b5132 1157
7619e7c7
AM
1158 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1159 HOWTO (R_PPC_GOT_DTPREL16_HA,
1160 16, /* rightshift */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1162 16, /* bitsize */
1163 FALSE, /* pc_relative */
1164 0, /* bitpos */
1165 complain_overflow_dont, /* complain_on_overflow */
1166 ppc_elf_unhandled_reloc, /* special_function */
1167 "R_PPC_GOT_DTPREL16_HA", /* name */
1168 FALSE, /* partial_inplace */
1169 0, /* src_mask */
1170 0xffff, /* dst_mask */
1171 FALSE), /* pcrel_offset */
c3668558 1172
7619e7c7
AM
1173 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1174 offset to the entry. */
1175 HOWTO (R_PPC_GOT_TPREL16,
1176 0, /* rightshift */
1177 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 16, /* bitsize */
1179 FALSE, /* pc_relative */
1180 0, /* bitpos */
1181 complain_overflow_signed, /* complain_on_overflow */
1182 ppc_elf_unhandled_reloc, /* special_function */
1183 "R_PPC_GOT_TPREL16", /* name */
1184 FALSE, /* partial_inplace */
1185 0, /* src_mask */
1186 0xffff, /* dst_mask */
1187 FALSE), /* pcrel_offset */
1188
1189 /* Like GOT_TPREL16, but no overflow. */
1190 HOWTO (R_PPC_GOT_TPREL16_LO,
1191 0, /* rightshift */
1192 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 16, /* bitsize */
1194 FALSE, /* pc_relative */
1195 0, /* bitpos */
1196 complain_overflow_dont, /* complain_on_overflow */
1197 ppc_elf_unhandled_reloc, /* special_function */
1198 "R_PPC_GOT_TPREL16_LO", /* name */
1199 FALSE, /* partial_inplace */
1200 0, /* src_mask */
1201 0xffff, /* dst_mask */
1202 FALSE), /* pcrel_offset */
1203
1204 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1205 HOWTO (R_PPC_GOT_TPREL16_HI,
1206 16, /* rightshift */
1207 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 16, /* bitsize */
1209 FALSE, /* pc_relative */
1210 0, /* bitpos */
1211 complain_overflow_dont, /* complain_on_overflow */
1212 ppc_elf_unhandled_reloc, /* special_function */
1213 "R_PPC_GOT_TPREL16_HI", /* name */
1214 FALSE, /* partial_inplace */
1215 0, /* src_mask */
1216 0xffff, /* dst_mask */
1217 FALSE), /* pcrel_offset */
1218
1219 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1220 HOWTO (R_PPC_GOT_TPREL16_HA,
1221 16, /* rightshift */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1223 16, /* bitsize */
1224 FALSE, /* pc_relative */
1225 0, /* bitpos */
1226 complain_overflow_dont, /* complain_on_overflow */
1227 ppc_elf_unhandled_reloc, /* special_function */
1228 "R_PPC_GOT_TPREL16_HA", /* name */
1229 FALSE, /* partial_inplace */
1230 0, /* src_mask */
1231 0xffff, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1233
1234 /* The remaining relocs are from the Embedded ELF ABI, and are not
1235 in the SVR4 ELF ABI. */
1236
1237 /* 32 bit value resulting from the addend minus the symbol. */
1238 HOWTO (R_PPC_EMB_NADDR32, /* type */
1239 0, /* rightshift */
1240 2, /* size (0 = byte, 1 = short, 2 = long) */
1241 32, /* bitsize */
1242 FALSE, /* pc_relative */
1243 0, /* bitpos */
1244 complain_overflow_bitfield, /* complain_on_overflow */
1245 bfd_elf_generic_reloc, /* special_function */
1246 "R_PPC_EMB_NADDR32", /* name */
1247 FALSE, /* partial_inplace */
1248 0, /* src_mask */
1249 0xffffffff, /* dst_mask */
1250 FALSE), /* pcrel_offset */
1251
1252 /* 16 bit value resulting from the addend minus the symbol. */
1253 HOWTO (R_PPC_EMB_NADDR16, /* type */
1254 0, /* rightshift */
1255 1, /* size (0 = byte, 1 = short, 2 = long) */
1256 16, /* bitsize */
1257 FALSE, /* pc_relative */
1258 0, /* bitpos */
1259 complain_overflow_bitfield, /* complain_on_overflow */
1260 bfd_elf_generic_reloc, /* special_function */
1261 "R_PPC_EMB_NADDR16", /* name */
1262 FALSE, /* partial_inplace */
1263 0, /* src_mask */
1264 0xffff, /* dst_mask */
1265 FALSE), /* pcrel_offset */
1266
1267 /* 16 bit value resulting from the addend minus the symbol. */
1268 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1269 0, /* rightshift */
1270 1, /* size (0 = byte, 1 = short, 2 = long) */
1271 16, /* bitsize */
1272 FALSE, /* pc_relative */
1273 0, /* bitpos */
1274 complain_overflow_dont,/* complain_on_overflow */
1275 bfd_elf_generic_reloc, /* special_function */
1276 "R_PPC_EMB_ADDR16_LO", /* name */
1277 FALSE, /* partial_inplace */
1278 0, /* src_mask */
1279 0xffff, /* dst_mask */
1280 FALSE), /* pcrel_offset */
1281
1282 /* The high order 16 bits of the addend minus the symbol. */
1283 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1284 16, /* rightshift */
1285 1, /* size (0 = byte, 1 = short, 2 = long) */
1286 16, /* bitsize */
1287 FALSE, /* pc_relative */
1288 0, /* bitpos */
1289 complain_overflow_dont, /* complain_on_overflow */
1290 bfd_elf_generic_reloc, /* special_function */
1291 "R_PPC_EMB_NADDR16_HI", /* name */
1292 FALSE, /* partial_inplace */
1293 0, /* src_mask */
1294 0xffff, /* dst_mask */
1295 FALSE), /* pcrel_offset */
1296
1297 /* The high order 16 bits of the result of the addend minus the address,
1298 plus 1 if the contents of the low 16 bits, treated as a signed number,
1299 is negative. */
1300 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1301 16, /* rightshift */
1302 1, /* size (0 = byte, 1 = short, 2 = long) */
1303 16, /* bitsize */
1304 FALSE, /* pc_relative */
1305 0, /* bitpos */
1306 complain_overflow_dont, /* complain_on_overflow */
25dbc73a
AM
1307 ppc_elf_addr16_ha_reloc, /* special_function */
1308 "R_PPC_EMB_NADDR16_HA", /* name */
1309 FALSE, /* partial_inplace */
1310 0, /* src_mask */
1311 0xffff, /* dst_mask */
1312 FALSE), /* pcrel_offset */
1313
1314 /* 16 bit value resulting from allocating a 4 byte word to hold an
1315 address in the .sdata section, and returning the offset from
1316 _SDA_BASE_ for that relocation. */
1317 HOWTO (R_PPC_EMB_SDAI16, /* type */
1318 0, /* rightshift */
1319 1, /* size (0 = byte, 1 = short, 2 = long) */
1320 16, /* bitsize */
1321 FALSE, /* pc_relative */
1322 0, /* bitpos */
bd6c6e2b 1323 complain_overflow_signed, /* complain_on_overflow */
25dbc73a
AM
1324 bfd_elf_generic_reloc, /* special_function */
1325 "R_PPC_EMB_SDAI16", /* name */
1326 FALSE, /* partial_inplace */
1327 0, /* src_mask */
1328 0xffff, /* dst_mask */
1329 FALSE), /* pcrel_offset */
1330
1331 /* 16 bit value resulting from allocating a 4 byte word to hold an
1332 address in the .sdata2 section, and returning the offset from
1333 _SDA2_BASE_ for that relocation. */
1334 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1335 0, /* rightshift */
1336 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 16, /* bitsize */
1338 FALSE, /* pc_relative */
1339 0, /* bitpos */
bd6c6e2b 1340 complain_overflow_signed, /* complain_on_overflow */
25dbc73a
AM
1341 bfd_elf_generic_reloc, /* special_function */
1342 "R_PPC_EMB_SDA2I16", /* name */
1343 FALSE, /* partial_inplace */
1344 0, /* src_mask */
1345 0xffff, /* dst_mask */
1346 FALSE), /* pcrel_offset */
1347
1348 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1349 small data items. */
1350 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1351 0, /* rightshift */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1353 16, /* bitsize */
1354 FALSE, /* pc_relative */
1355 0, /* bitpos */
1356 complain_overflow_signed, /* complain_on_overflow */
1357 bfd_elf_generic_reloc, /* special_function */
1358 "R_PPC_EMB_SDA2REL", /* name */
1359 FALSE, /* partial_inplace */
1360 0, /* src_mask */
1361 0xffff, /* dst_mask */
1362 FALSE), /* pcrel_offset */
1363
1364 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1365 signed offset from the appropriate base, and filling in the register
1366 field with the appropriate register (0, 2, or 13). */
1367 HOWTO (R_PPC_EMB_SDA21, /* type */
1368 0, /* rightshift */
1369 2, /* size (0 = byte, 1 = short, 2 = long) */
1370 16, /* bitsize */
1371 FALSE, /* pc_relative */
1372 0, /* bitpos */
1373 complain_overflow_signed, /* complain_on_overflow */
1374 bfd_elf_generic_reloc, /* special_function */
1375 "R_PPC_EMB_SDA21", /* name */
1376 FALSE, /* partial_inplace */
1377 0, /* src_mask */
1378 0xffff, /* dst_mask */
1379 FALSE), /* pcrel_offset */
1380
1381 /* Relocation not handled: R_PPC_EMB_MRKREF */
1382 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1383 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1384 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1385 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1386 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1387
1388 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1389 in the 16 bit signed offset from the appropriate base, and filling in the
1390 register field with the appropriate register (0, 2, or 13). */
1391 HOWTO (R_PPC_EMB_RELSDA, /* type */
1392 0, /* rightshift */
1393 1, /* size (0 = byte, 1 = short, 2 = long) */
1394 16, /* bitsize */
ddfd6795 1395 FALSE, /* pc_relative */
25dbc73a
AM
1396 0, /* bitpos */
1397 complain_overflow_signed, /* complain_on_overflow */
1398 bfd_elf_generic_reloc, /* special_function */
1399 "R_PPC_EMB_RELSDA", /* name */
1400 FALSE, /* partial_inplace */
1401 0, /* src_mask */
1402 0xffff, /* dst_mask */
1403 FALSE), /* pcrel_offset */
1404
b9c361e0
JL
1405 /* A relative 8 bit branch. */
1406 HOWTO (R_PPC_VLE_REL8, /* type */
1407 1, /* rightshift */
1408 1, /* size (0 = byte, 1 = short, 2 = long) */
1409 8, /* bitsize */
1410 TRUE, /* pc_relative */
1411 0, /* bitpos */
1412 complain_overflow_signed, /* complain_on_overflow */
1413 bfd_elf_generic_reloc, /* special_function */
1414 "R_PPC_VLE_REL8", /* name */
1415 FALSE, /* partial_inplace */
1416 0, /* src_mask */
1417 0xff, /* dst_mask */
1418 TRUE), /* pcrel_offset */
68ffbac6 1419
b9c361e0
JL
1420 /* A relative 15 bit branch. */
1421 HOWTO (R_PPC_VLE_REL15, /* type */
1422 1, /* rightshift */
1423 2, /* size (0 = byte, 1 = short, 2 = long) */
1424 15, /* bitsize */
1425 TRUE, /* pc_relative */
1426 1, /* bitpos */
1427 complain_overflow_signed, /* complain_on_overflow */
1428 bfd_elf_generic_reloc, /* special_function */
1429 "R_PPC_VLE_REL15", /* name */
1430 FALSE, /* partial_inplace */
1431 0, /* src_mask */
1432 0xfe, /* dst_mask */
1433 TRUE), /* pcrel_offset */
1434
68ffbac6 1435 /* A relative 24 bit branch. */
b9c361e0
JL
1436 HOWTO (R_PPC_VLE_REL24, /* type */
1437 1, /* rightshift */
1438 2, /* size (0 = byte, 1 = short, 2 = long) */
1439 24, /* bitsize */
1440 TRUE, /* pc_relative */
1441 1, /* bitpos */
1442 complain_overflow_signed, /* complain_on_overflow */
1443 bfd_elf_generic_reloc, /* special_function */
1444 "R_PPC_VLE_REL24", /* name */
1445 FALSE, /* partial_inplace */
1446 0, /* src_mask */
1447 0x1fffffe, /* dst_mask */
1448 TRUE), /* pcrel_offset */
1449
1450 /* The 16 LSBS in split16a format. */
1451 HOWTO (R_PPC_VLE_LO16A, /* type */
1452 0, /* rightshift */
1453 2, /* size (0 = byte, 1 = short, 2 = long) */
1454 32, /* bitsize */
bdaacd3a 1455 FALSE, /* pc_relative */
b9c361e0
JL
1456 0, /* bitpos */
1457 complain_overflow_bitfield, /* complain_on_overflow */
1458 bfd_elf_generic_reloc, /* special_function */
1459 "R_PPC_VLE_LO16A", /* name */
1460 FALSE, /* partial_inplace */
1461 0, /* src_mask */
bdaacd3a 1462 0x1f007ff, /* dst_mask */
b9c361e0
JL
1463 FALSE), /* pcrel_offset */
1464
1465 /* The 16 LSBS in split16d format. */
1466 HOWTO (R_PPC_VLE_LO16D, /* type */
1467 0, /* rightshift */
1468 2, /* size (0 = byte, 1 = short, 2 = long) */
1469 32, /* bitsize */
1470 FALSE, /* pc_relative */
1471 0, /* bitpos */
1472 complain_overflow_bitfield, /* complain_on_overflow */
1473 bfd_elf_generic_reloc, /* special_function */
1474 "R_PPC_VLE_LO16D", /* name */
1475 FALSE, /* partial_inplace */
1476 0, /* src_mask */
1477 0x1f07ff, /* dst_mask */
1478 FALSE), /* pcrel_offset */
1479
1480 /* Bits 16-31 split16a format. */
1481 HOWTO (R_PPC_VLE_HI16A, /* type */
1482 0, /* rightshift */
1483 2, /* size (0 = byte, 1 = short, 2 = long) */
1484 32, /* bitsize */
1485 FALSE, /* pc_relative */
1486 0, /* bitpos */
1487 complain_overflow_bitfield, /* complain_on_overflow */
1488 bfd_elf_generic_reloc, /* special_function */
1489 "R_PPC_VLE_HI16A", /* name */
1490 FALSE, /* partial_inplace */
1491 0, /* src_mask */
bdaacd3a 1492 0x1f007ff, /* dst_mask */
b9c361e0
JL
1493 FALSE), /* pcrel_offset */
1494
1495 /* Bits 16-31 split16d format. */
1496 HOWTO (R_PPC_VLE_HI16D, /* type */
1497 0, /* rightshift */
1498 2, /* size (0 = byte, 1 = short, 2 = long) */
1499 32, /* bitsize */
1500 FALSE, /* pc_relative */
1501 0, /* bitpos */
1502 complain_overflow_bitfield, /* complain_on_overflow */
1503 bfd_elf_generic_reloc, /* special_function */
1504 "R_PPC_VLE_HI16D", /* name */
1505 FALSE, /* partial_inplace */
1506 0, /* src_mask */
1507 0x1f07ff, /* dst_mask */
1508 FALSE), /* pcrel_offset */
1509
1510 /* Bits 16-31 (High Adjusted) in split16a format. */
1511 HOWTO (R_PPC_VLE_HA16A, /* type */
1512 0, /* rightshift */
1513 2, /* size (0 = byte, 1 = short, 2 = long) */
1514 32, /* bitsize */
1515 FALSE, /* pc_relative */
1516 0, /* bitpos */
1517 complain_overflow_bitfield, /* complain_on_overflow */
1518 bfd_elf_generic_reloc, /* special_function */
1519 "R_PPC_VLE_HA16A", /* name */
1520 FALSE, /* partial_inplace */
1521 0, /* src_mask */
bdaacd3a 1522 0x1f007ff, /* dst_mask */
b9c361e0
JL
1523 FALSE), /* pcrel_offset */
1524
1525 /* Bits 16-31 (High Adjusted) in split16d format. */
1526 HOWTO (R_PPC_VLE_HA16D, /* type */
1527 0, /* rightshift */
1528 2, /* size (0 = byte, 1 = short, 2 = long) */
1529 32, /* bitsize */
1530 FALSE, /* pc_relative */
1531 0, /* bitpos */
1532 complain_overflow_bitfield, /* complain_on_overflow */
1533 bfd_elf_generic_reloc, /* special_function */
1534 "R_PPC_VLE_HA16D", /* name */
1535 FALSE, /* partial_inplace */
1536 0, /* src_mask */
1537 0x1f07ff, /* dst_mask */
1538 FALSE), /* pcrel_offset */
1539
1540 /* This reloc does nothing. */
1541 HOWTO (R_PPC_VLE_SDA21, /* type */
1542 0, /* rightshift */
1543 2, /* size (0 = byte, 1 = short, 2 = long) */
1544 32, /* bitsize */
1545 FALSE, /* pc_relative */
1546 0, /* bitpos */
1547 complain_overflow_bitfield, /* complain_on_overflow */
1548 bfd_elf_generic_reloc, /* special_function */
1549 "R_PPC_VLE_SDA21", /* name */
1550 FALSE, /* partial_inplace */
1551 0, /* src_mask */
1552 0xffff, /* dst_mask */
1553 FALSE), /* pcrel_offset */
1554
1555 /* This reloc does nothing. */
1556 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1557 0, /* rightshift */
1558 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 32, /* bitsize */
1560 FALSE, /* pc_relative */
1561 0, /* bitpos */
1562 complain_overflow_bitfield, /* complain_on_overflow */
1563 bfd_elf_generic_reloc, /* special_function */
1564 "R_PPC_VLE_SDA21_LO", /* name */
1565 FALSE, /* partial_inplace */
1566 0, /* src_mask */
1567 0, /* dst_mask */
1568 FALSE), /* pcrel_offset */
1569
1570 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1571 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1572 0, /* rightshift */
1573 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 32, /* bitsize */
1575 FALSE, /* pc_relative */
1576 0, /* bitpos */
1577 complain_overflow_bitfield, /* complain_on_overflow */
1578 bfd_elf_generic_reloc, /* special_function */
1579 "R_PPC_VLE_SDAREL_LO16A", /* name */
1580 FALSE, /* partial_inplace */
1581 0, /* src_mask */
bdaacd3a 1582 0x1f007ff, /* dst_mask */
b9c361e0
JL
1583 FALSE), /* pcrel_offset */
1584
1585 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1586 /* This reloc does nothing. */
1587 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1588 0, /* rightshift */
1589 2, /* size (0 = byte, 1 = short, 2 = long) */
1590 32, /* bitsize */
1591 FALSE, /* pc_relative */
1592 0, /* bitpos */
1593 complain_overflow_bitfield, /* complain_on_overflow */
1594 bfd_elf_generic_reloc, /* special_function */
1595 "R_PPC_VLE_SDAREL_LO16D", /* name */
1596 FALSE, /* partial_inplace */
1597 0, /* src_mask */
1598 0x1f07ff, /* dst_mask */
1599 FALSE), /* pcrel_offset */
1600
1601 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1602 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1603 0, /* rightshift */
1604 2, /* size (0 = byte, 1 = short, 2 = long) */
1605 32, /* bitsize */
1606 FALSE, /* pc_relative */
1607 0, /* bitpos */
1608 complain_overflow_bitfield, /* complain_on_overflow */
1609 bfd_elf_generic_reloc, /* special_function */
1610 "R_PPC_VLE_SDAREL_HI16A", /* name */
1611 FALSE, /* partial_inplace */
1612 0, /* src_mask */
bdaacd3a 1613 0x1f007ff, /* dst_mask */
b9c361e0
JL
1614 FALSE), /* pcrel_offset */
1615
1616 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1617 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1618 0, /* rightshift */
1619 2, /* size (0 = byte, 1 = short, 2 = long) */
1620 32, /* bitsize */
1621 FALSE, /* pc_relative */
1622 0, /* bitpos */
1623 complain_overflow_bitfield, /* complain_on_overflow */
1624 bfd_elf_generic_reloc, /* special_function */
1625 "R_PPC_VLE_SDAREL_HI16D", /* name */
1626 FALSE, /* partial_inplace */
1627 0, /* src_mask */
1628 0x1f07ff, /* dst_mask */
1629 FALSE), /* pcrel_offset */
1630
1631 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1632 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1633 0, /* rightshift */
1634 2, /* size (0 = byte, 1 = short, 2 = long) */
1635 32, /* bitsize */
1636 FALSE, /* pc_relative */
1637 0, /* bitpos */
1638 complain_overflow_bitfield, /* complain_on_overflow */
1639 bfd_elf_generic_reloc, /* special_function */
1640 "R_PPC_VLE_SDAREL_HA16A", /* name */
1641 FALSE, /* partial_inplace */
1642 0, /* src_mask */
bdaacd3a 1643 0x1f007ff, /* dst_mask */
b9c361e0
JL
1644 FALSE), /* pcrel_offset */
1645
1646 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1647 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1648 0, /* rightshift */
1649 2, /* size (0 = byte, 1 = short, 2 = long) */
1650 32, /* bitsize */
1651 FALSE, /* pc_relative */
1652 0, /* bitpos */
1653 complain_overflow_bitfield, /* complain_on_overflow */
1654 bfd_elf_generic_reloc, /* special_function */
1655 "R_PPC_VLE_SDAREL_HA16D", /* name */
1656 FALSE, /* partial_inplace */
1657 0, /* src_mask */
1658 0x1f07ff, /* dst_mask */
1659 FALSE), /* pcrel_offset */
1660
e054468f
AM
1661 HOWTO (R_PPC_IRELATIVE, /* type */
1662 0, /* rightshift */
1663 2, /* size (0 = byte, 1 = short, 2 = long) */
1664 32, /* bitsize */
1665 FALSE, /* pc_relative */
1666 0, /* bitpos */
1667 complain_overflow_bitfield, /* complain_on_overflow */
1668 bfd_elf_generic_reloc, /* special_function */
1669 "R_PPC_IRELATIVE", /* name */
1670 FALSE, /* partial_inplace */
1671 0, /* src_mask */
1672 0xffffffff, /* dst_mask */
1673 FALSE), /* pcrel_offset */
1674
d7128ce4
AM
1675 /* A 16 bit relative relocation. */
1676 HOWTO (R_PPC_REL16, /* type */
1677 0, /* rightshift */
1678 1, /* size (0 = byte, 1 = short, 2 = long) */
1679 16, /* bitsize */
1680 TRUE, /* pc_relative */
1681 0, /* bitpos */
1682 complain_overflow_bitfield, /* complain_on_overflow */
1683 bfd_elf_generic_reloc, /* special_function */
1684 "R_PPC_REL16", /* name */
1685 FALSE, /* partial_inplace */
1686 0, /* src_mask */
1687 0xffff, /* dst_mask */
1688 TRUE), /* pcrel_offset */
1689
1690 /* A 16 bit relative relocation without overflow. */
1691 HOWTO (R_PPC_REL16_LO, /* type */
1692 0, /* rightshift */
1693 1, /* size (0 = byte, 1 = short, 2 = long) */
1694 16, /* bitsize */
1695 TRUE, /* pc_relative */
1696 0, /* bitpos */
1697 complain_overflow_dont,/* complain_on_overflow */
1698 bfd_elf_generic_reloc, /* special_function */
1699 "R_PPC_REL16_LO", /* name */
1700 FALSE, /* partial_inplace */
1701 0, /* src_mask */
1702 0xffff, /* dst_mask */
1703 TRUE), /* pcrel_offset */
1704
1705 /* The high order 16 bits of a relative address. */
1706 HOWTO (R_PPC_REL16_HI, /* type */
1707 16, /* rightshift */
1708 1, /* size (0 = byte, 1 = short, 2 = long) */
1709 16, /* bitsize */
1710 TRUE, /* pc_relative */
1711 0, /* bitpos */
1712 complain_overflow_dont, /* complain_on_overflow */
1713 bfd_elf_generic_reloc, /* special_function */
1714 "R_PPC_REL16_HI", /* name */
1715 FALSE, /* partial_inplace */
1716 0, /* src_mask */
1717 0xffff, /* dst_mask */
1718 TRUE), /* pcrel_offset */
1719
1720 /* The high order 16 bits of a relative address, plus 1 if the contents of
1721 the low 16 bits, treated as a signed number, is negative. */
1722 HOWTO (R_PPC_REL16_HA, /* type */
1723 16, /* rightshift */
1724 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 16, /* bitsize */
1726 TRUE, /* pc_relative */
1727 0, /* bitpos */
1728 complain_overflow_dont, /* complain_on_overflow */
1729 ppc_elf_addr16_ha_reloc, /* special_function */
1730 "R_PPC_REL16_HA", /* name */
1731 FALSE, /* partial_inplace */
1732 0, /* src_mask */
1733 0xffff, /* dst_mask */
1734 TRUE), /* pcrel_offset */
1735
25dbc73a
AM
1736 /* GNU extension to record C++ vtable hierarchy. */
1737 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1738 0, /* rightshift */
1739 0, /* size (0 = byte, 1 = short, 2 = long) */
1740 0, /* bitsize */
1741 FALSE, /* pc_relative */
1742 0, /* bitpos */
1743 complain_overflow_dont, /* complain_on_overflow */
1744 NULL, /* special_function */
1745 "R_PPC_GNU_VTINHERIT", /* name */
1746 FALSE, /* partial_inplace */
1747 0, /* src_mask */
1748 0, /* dst_mask */
1749 FALSE), /* pcrel_offset */
1750
1751 /* GNU extension to record C++ vtable member usage. */
1752 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1753 0, /* rightshift */
1754 0, /* size (0 = byte, 1 = short, 2 = long) */
1755 0, /* bitsize */
1756 FALSE, /* pc_relative */
1757 0, /* bitpos */
1758 complain_overflow_dont, /* complain_on_overflow */
1759 NULL, /* special_function */
1760 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM
1761 FALSE, /* partial_inplace */
1762 0, /* src_mask */
25dbc73a 1763 0, /* dst_mask */
7619e7c7
AM
1764 FALSE), /* pcrel_offset */
1765
25dbc73a
AM
1766 /* Phony reloc to handle AIX style TOC entries. */
1767 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM
1768 0, /* rightshift */
1769 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 16, /* bitsize */
1771 FALSE, /* pc_relative */
1772 0, /* bitpos */
25dbc73a 1773 complain_overflow_signed, /* complain_on_overflow */
7619e7c7 1774 bfd_elf_generic_reloc, /* special_function */
25dbc73a 1775 "R_PPC_TOC16", /* name */
7619e7c7
AM
1776 FALSE, /* partial_inplace */
1777 0, /* src_mask */
1778 0xffff, /* dst_mask */
1779 FALSE), /* pcrel_offset */
25dbc73a 1780};
70a38d42
SDJ
1781
1782/* External 32-bit PPC structure for PRPSINFO. This structure is
1783 ABI-defined, thus we choose to use char arrays here in order to
1784 avoid dealing with different types in different architectures.
1785
1786 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1787 most non-PPC architectures use `short int'.
1788
1789 This structure will ultimately be written in the corefile's note
1790 section, as the PRPSINFO. */
1791
1792struct elf_external_ppc_linux_prpsinfo32
1793 {
1794 char pr_state; /* Numeric process state. */
1795 char pr_sname; /* Char for pr_state. */
1796 char pr_zomb; /* Zombie. */
1797 char pr_nice; /* Nice val. */
1798 char pr_flag[4]; /* Flags. */
1799 char pr_uid[4];
1800 char pr_gid[4];
1801 char pr_pid[4];
1802 char pr_ppid[4];
1803 char pr_pgrp[4];
1804 char pr_sid[4];
1805 char pr_fname[16]; /* Filename of executable. */
1806 char pr_psargs[80]; /* Initial part of arg list. */
1807 };
1808
1809/* Helper macro to swap (properly handling endianess) things from the
1810 `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32'
1811 structure.
1812
1813 Note that FROM should be a pointer, and TO should be the explicit type. */
1814
1815#define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \
1816 do \
1817 { \
1818 H_PUT_8 (abfd, from->pr_state, &to.pr_state); \
1819 H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \
1820 H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \
1821 H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \
1822 H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \
1823 H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \
1824 H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \
1825 H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \
1826 H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \
1827 H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \
1828 H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \
1829 strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \
1830 strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \
1831 } while (0)
1832
25dbc73a
AM
1833\f
1834/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1835
1836static void
1837ppc_elf_howto_init (void)
1838{
1839 unsigned int i, type;
1840
1841 for (i = 0;
1842 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1843 i++)
1844 {
1845 type = ppc_elf_howto_raw[i].type;
1846 if (type >= (sizeof (ppc_elf_howto_table)
1847 / sizeof (ppc_elf_howto_table[0])))
1848 abort ();
1849 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1850 }
1851}
1852
1853static reloc_howto_type *
1854ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1855 bfd_reloc_code_real_type code)
1856{
1857 enum elf_ppc_reloc_type r;
1858
1859 /* Initialize howto table if not already done. */
1860 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1861 ppc_elf_howto_init ();
1862
1863 switch (code)
1864 {
1865 default:
1866 return NULL;
1867
1868 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1869 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1870 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1fe532cf 1871 case BFD_RELOC_PPC64_ADDR16_DS:
25dbc73a 1872 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1fe532cf 1873 case BFD_RELOC_PPC64_ADDR16_LO_DS:
25dbc73a
AM
1874 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1875 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1876 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1877 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1878 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1879 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1880 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1881 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1882 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1883 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1fe532cf 1884 case BFD_RELOC_PPC64_GOT16_DS:
25dbc73a 1885 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1fe532cf 1886 case BFD_RELOC_PPC64_GOT16_LO_DS:
25dbc73a
AM
1887 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1888 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1889 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1890 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1891 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1892 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1893 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1894 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1895 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1896 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1fe532cf 1897 case BFD_RELOC_PPC64_PLT16_LO_DS:
25dbc73a
AM
1898 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1899 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1900 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1901 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1fe532cf 1902 case BFD_RELOC_PPC64_SECTOFF_DS:
25dbc73a 1903 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1fe532cf 1904 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
25dbc73a
AM
1905 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1906 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1907 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1908 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1fe532cf 1909 case BFD_RELOC_PPC64_TOC16_DS:
25dbc73a
AM
1910 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1911 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
727fc41e
AM
1912 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1913 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
25dbc73a 1914 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1fe532cf 1915 case BFD_RELOC_PPC64_TPREL16_DS:
25dbc73a 1916 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1fe532cf 1917 case BFD_RELOC_PPC64_TPREL16_LO_DS:
25dbc73a
AM
1918 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1919 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1920 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1921 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1fe532cf 1922 case BFD_RELOC_PPC64_DTPREL16_DS:
25dbc73a 1923 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1fe532cf 1924 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
25dbc73a
AM
1925 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1926 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1927 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1928 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1929 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1930 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1931 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1932 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1933 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1934 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1935 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1936 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1937 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1938 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1939 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1940 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1941 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1942 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1943 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1944 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1945 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1946 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1947 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1948 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1949 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1950 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1951 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1952 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1953 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1954 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1955 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1956 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1957 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1958 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1959 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1960 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
b9c361e0
JL
1961 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1962 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1963 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1964 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1965 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1966 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1967 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1968 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1969 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1970 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1971 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1972 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1973 r = R_PPC_VLE_SDAREL_LO16A;
1974 break;
1975 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1976 r = R_PPC_VLE_SDAREL_LO16D;
1977 break;
1978 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1979 r = R_PPC_VLE_SDAREL_HI16A;
1980 break;
1981 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1982 r = R_PPC_VLE_SDAREL_HI16D;
1983 break;
1984 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1985 r = R_PPC_VLE_SDAREL_HA16A;
1986 break;
1987 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1988 r = R_PPC_VLE_SDAREL_HA16D;
1989 break;
d7128ce4
AM
1990 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1991 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1992 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1993 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
25dbc73a
AM
1994 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1995 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1996 }
1997
1998 return ppc_elf_howto_table[r];
1999};
2000
157090f7
AM
2001static reloc_howto_type *
2002ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2003 const char *r_name)
2004{
2005 unsigned int i;
2006
2007 for (i = 0;
2008 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2009 i++)
2010 if (ppc_elf_howto_raw[i].name != NULL
2011 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2012 return &ppc_elf_howto_raw[i];
2013
2014 return NULL;
2015}
2016
25dbc73a
AM
2017/* Set the howto pointer for a PowerPC ELF reloc. */
2018
2019static void
2020ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2021 arelent *cache_ptr,
2022 Elf_Internal_Rela *dst)
2023{
2024 /* Initialize howto table if not already done. */
2025 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2026 ppc_elf_howto_init ();
2027
2028 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
2029 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
375de94a
AM
2030
2031 /* Just because the above assert didn't trigger doesn't mean that
2032 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2033 if (!cache_ptr->howto)
2034 {
2035 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2036 abfd, ELF32_R_TYPE (dst->r_info));
2037 bfd_set_error (bfd_error_bad_value);
2038
2039 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2040 }
25dbc73a
AM
2041}
2042
d7128ce4 2043/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
25dbc73a
AM
2044
2045static bfd_reloc_status_type
2046ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2047 arelent *reloc_entry,
2048 asymbol *symbol,
2049 void *data ATTRIBUTE_UNUSED,
2050 asection *input_section,
2051 bfd *output_bfd,
2052 char **error_message ATTRIBUTE_UNUSED)
2053{
2054 bfd_vma relocation;
2055
2056 if (output_bfd != NULL)
2057 {
2058 reloc_entry->address += input_section->output_offset;
2059 return bfd_reloc_ok;
2060 }
2061
2062 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2063 return bfd_reloc_outofrange;
2064
2065 if (bfd_is_com_section (symbol->section))
2066 relocation = 0;
2067 else
2068 relocation = symbol->value;
2069
2070 relocation += symbol->section->output_section->vma;
2071 relocation += symbol->section->output_offset;
2072 relocation += reloc_entry->addend;
d7128ce4
AM
2073 if (reloc_entry->howto->pc_relative)
2074 relocation -= reloc_entry->address;
25dbc73a
AM
2075
2076 reloc_entry->addend += (relocation & 0x8000) << 1;
2077
2078 return bfd_reloc_continue;
2079}
2080
2081static bfd_reloc_status_type
2082ppc_elf_unhandled_reloc (bfd *abfd,
2083 arelent *reloc_entry,
2084 asymbol *symbol,
2085 void *data,
2086 asection *input_section,
2087 bfd *output_bfd,
2088 char **error_message)
2089{
2090 /* If this is a relocatable link (output_bfd test tells us), just
2091 call the generic function. Any adjustment will be done at final
2092 link time. */
2093 if (output_bfd != NULL)
2094 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2095 input_section, output_bfd, error_message);
2096
2097 if (error_message != NULL)
2098 {
2099 static char buf[60];
2100 sprintf (buf, _("generic linker can't handle %s"),
2101 reloc_entry->howto->name);
2102 *error_message = buf;
2103 }
2104 return bfd_reloc_dangerous;
2105}
2106\f
2107/* Sections created by the linker. */
2108
2109typedef struct elf_linker_section
2110{
c9a2f333 2111 /* Pointer to the bfd section. */
25dbc73a 2112 asection *section;
c9a2f333
AM
2113 /* Section name. */
2114 const char *name;
2115 /* Associated bss section name. */
2116 const char *bss_name;
2117 /* Associated symbol name. */
2118 const char *sym_name;
046183de
AM
2119 /* Associated symbol. */
2120 struct elf_link_hash_entry *sym;
25dbc73a
AM
2121} elf_linker_section_t;
2122
2123/* Linked list of allocated pointer entries. This hangs off of the
2124 symbol lists, and provides allows us to return different pointers,
2125 based on different addend's. */
2126
2127typedef struct elf_linker_section_pointers
2128{
2129 /* next allocated pointer for this symbol */
2130 struct elf_linker_section_pointers *next;
2131 /* offset of pointer from beginning of section */
2132 bfd_vma offset;
2133 /* addend used */
2134 bfd_vma addend;
2135 /* which linker section this is */
2136 elf_linker_section_t *lsect;
25dbc73a
AM
2137} elf_linker_section_pointers_t;
2138
2139struct ppc_elf_obj_tdata
2140{
2141 struct elf_obj_tdata elf;
2142
2143 /* A mapping from local symbols to offsets into the various linker
2144 sections added. This is index by the symbol index. */
2145 elf_linker_section_pointers_t **linker_section_pointers;
016687f8
AM
2146
2147 /* Flags used to auto-detect plt type. */
2148 unsigned int makes_plt_call : 1;
2149 unsigned int has_rel16 : 1;
25dbc73a
AM
2150};
2151
2152#define ppc_elf_tdata(bfd) \
2153 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 2154
25dbc73a
AM
2155#define elf_local_ptr_offsets(bfd) \
2156 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 2157
0c8d6e5c
AM
2158#define is_ppc_elf(bfd) \
2159 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2160 && elf_object_id (bfd) == PPC32_ELF_DATA)
0c8d6e5c 2161
25dbc73a 2162/* Override the generic function because we store some extras. */
7619e7c7 2163
25dbc73a
AM
2164static bfd_boolean
2165ppc_elf_mkobject (bfd *abfd)
2166{
0ffa91dd 2167 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
4dfe6ac6 2168 PPC32_ELF_DATA);
25dbc73a 2169}
7619e7c7 2170
25dbc73a
AM
2171/* Fix bad default arch selected for a 32 bit input bfd when the
2172 default is 64 bit. */
7619e7c7 2173
25dbc73a
AM
2174static bfd_boolean
2175ppc_elf_object_p (bfd *abfd)
2176{
2177 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2178 {
2179 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 2180
25dbc73a
AM
2181 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2182 {
2183 /* Relies on arch after 64 bit default being 32 bit default. */
2184 abfd->arch_info = abfd->arch_info->next;
2185 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2186 }
2187 }
2188 return TRUE;
2189}
7619e7c7 2190
25dbc73a 2191/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 2192
25dbc73a
AM
2193static bfd_boolean
2194ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2195{
2196 BFD_ASSERT (!elf_flags_init (abfd)
2197 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 2198
25dbc73a
AM
2199 elf_elfheader (abfd)->e_flags = flags;
2200 elf_flags_init (abfd) = TRUE;
2201 return TRUE;
2202}
2203
25dbc73a 2204/* Support for core dump NOTE sections. */
deaaf2f3 2205
b34976b6 2206static bfd_boolean
25dbc73a 2207ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 2208{
25dbc73a
AM
2209 int offset;
2210 unsigned int size;
252b5132 2211
25dbc73a
AM
2212 switch (note->descsz)
2213 {
2214 default:
2215 return FALSE;
252b5132 2216
25dbc73a
AM
2217 case 268: /* Linux/PPC. */
2218 /* pr_cursig */
228e534f 2219 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 2220
25dbc73a 2221 /* pr_pid */
228e534f 2222 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 2223
25dbc73a
AM
2224 /* pr_reg */
2225 offset = 72;
2226 size = 192;
deaaf2f3 2227
25dbc73a
AM
2228 break;
2229 }
deaaf2f3 2230
25dbc73a
AM
2231 /* Make a ".reg/999" section. */
2232 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2233 size, note->descpos + offset);
2234}
252b5132 2235
25dbc73a
AM
2236static bfd_boolean
2237ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2238{
2239 switch (note->descsz)
deaaf2f3 2240 {
25dbc73a
AM
2241 default:
2242 return FALSE;
deaaf2f3 2243
25dbc73a 2244 case 128: /* Linux/PPC elf_prpsinfo. */
228e534f 2245 elf_tdata (abfd)->core->pid
bc989cdc 2246 = bfd_get_32 (abfd, note->descdata + 16);
228e534f 2247 elf_tdata (abfd)->core->program
25dbc73a 2248 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
228e534f 2249 elf_tdata (abfd)->core->command
25dbc73a
AM
2250 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2251 }
9abc968f 2252
25dbc73a
AM
2253 /* Note that for some reason, a spurious space is tacked
2254 onto the end of the args in some (at least one anyway)
2255 implementations, so strip it off if it exists. */
70bccea4 2256
25dbc73a 2257 {
228e534f 2258 char *command = elf_tdata (abfd)->core->command;
25dbc73a 2259 int n = strlen (command);
70bccea4 2260
25dbc73a
AM
2261 if (0 < n && command[n - 1] == ' ')
2262 command[n - 1] = '\0';
2263 }
deaaf2f3 2264
25dbc73a
AM
2265 return TRUE;
2266}
deaaf2f3 2267
70a38d42
SDJ
2268char *
2269elfcore_write_ppc_linux_prpsinfo32 (bfd *abfd, char *buf, int *bufsiz,
2270 const struct elf_internal_linux_prpsinfo *prpsinfo)
2271{
2272 struct elf_external_ppc_linux_prpsinfo32 data;
2273
2274 memset (&data, 0, sizeof (data));
2275 PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd, prpsinfo, data);
2276
2277 return elfcore_write_note (abfd, buf, bufsiz,
2278 "CORE", NT_PRPSINFO, &data, sizeof (data));
2279}
2280
183e98be
AM
2281static char *
2282ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2283{
2284 switch (note_type)
2285 {
2286 default:
2287 return NULL;
2288
2289 case NT_PRPSINFO:
2290 {
2291 char data[128];
2292 va_list ap;
2293
2294 va_start (ap, note_type);
75cd47ed 2295 memset (data, 0, sizeof (data));
183e98be
AM
2296 strncpy (data + 32, va_arg (ap, const char *), 16);
2297 strncpy (data + 48, va_arg (ap, const char *), 80);
2298 va_end (ap);
2299 return elfcore_write_note (abfd, buf, bufsiz,
2300 "CORE", note_type, data, sizeof (data));
2301 }
2302
2303 case NT_PRSTATUS:
2304 {
2305 char data[268];
2306 va_list ap;
2307 long pid;
2308 int cursig;
2309 const void *greg;
2310
2311 va_start (ap, note_type);
2312 memset (data, 0, 72);
2313 pid = va_arg (ap, long);
2314 bfd_put_32 (abfd, pid, data + 24);
2315 cursig = va_arg (ap, int);
2316 bfd_put_16 (abfd, cursig, data + 12);
2317 greg = va_arg (ap, const void *);
2318 memcpy (data + 72, greg, 192);
2319 memset (data + 264, 0, 4);
2320 va_end (ap);
2321 return elfcore_write_note (abfd, buf, bufsiz,
2322 "CORE", note_type, data, sizeof (data));
2323 }
2324 }
2325}
2326
b9c361e0 2327static flagword
68ffbac6 2328ppc_elf_lookup_section_flags (char *flag_name)
b9c361e0
JL
2329{
2330
2331 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2332 return SHF_PPC_VLE;
2333
2334 return 0;
2335}
2336
2337/* Add the VLE flag if required. */
2338
2339bfd_boolean
2340ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2341{
2342 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2343 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2344 shdr->sh_flags |= SHF_PPC_VLE;
2345
2346 return TRUE;
2347}
2348
25dbc73a
AM
2349/* Return address for Ith PLT stub in section PLT, for relocation REL
2350 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 2351
25dbc73a
AM
2352static bfd_vma
2353ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2354 const asection *plt ATTRIBUTE_UNUSED,
2355 const arelent *rel)
2356{
2357 return rel->address;
2358}
deaaf2f3 2359
25dbc73a 2360/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L
2361 is called when bfd_section_from_shdr finds a section with an unknown
2362 type. */
deaaf2f3 2363
25dbc73a 2364static bfd_boolean
6dc132d9
L
2365ppc_elf_section_from_shdr (bfd *abfd,
2366 Elf_Internal_Shdr *hdr,
2367 const char *name,
2368 int shindex)
25dbc73a
AM
2369{
2370 asection *newsect;
2371 flagword flags;
d1c6de6f 2372
6dc132d9 2373 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 2374 return FALSE;
deaaf2f3 2375
25dbc73a
AM
2376 newsect = hdr->bfd_section;
2377 flags = bfd_get_section_flags (abfd, newsect);
2378 if (hdr->sh_flags & SHF_EXCLUDE)
2379 flags |= SEC_EXCLUDE;
9abc968f 2380
25dbc73a
AM
2381 if (hdr->sh_type == SHT_ORDERED)
2382 flags |= SEC_SORT_ENTRIES;
d1c6de6f 2383
25dbc73a
AM
2384 bfd_set_section_flags (abfd, newsect, flags);
2385 return TRUE;
2386}
2387
2388/* Set up any other section flags and such that may be necessary. */
2389
2390static bfd_boolean
2391ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2392 Elf_Internal_Shdr *shdr,
2393 asection *asect)
2394{
25dbc73a
AM
2395 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2396 shdr->sh_type = SHT_ORDERED;
2397
2398 return TRUE;
2399}
2400
2401/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2402 need to bump up the number of section headers. */
2403
2404static int
a6b96beb
AM
2405ppc_elf_additional_program_headers (bfd *abfd,
2406 struct bfd_link_info *info ATTRIBUTE_UNUSED)
25dbc73a
AM
2407{
2408 asection *s;
2409 int ret = 0;
d1c6de6f 2410
25dbc73a
AM
2411 s = bfd_get_section_by_name (abfd, ".sbss2");
2412 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2413 ++ret;
d1c6de6f 2414
25dbc73a
AM
2415 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2416 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2417 ++ret;
deaaf2f3 2418
25dbc73a
AM
2419 return ret;
2420}
deaaf2f3 2421
68ffbac6 2422/* Modify the segment map for VLE executables. */
b9c361e0
JL
2423
2424bfd_boolean
2425ppc_elf_modify_segment_map (bfd *abfd,
2426 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2427{
2428 struct elf_segment_map *m, *n;
2429 bfd_size_type amt;
2430 unsigned int j, k;
2431 bfd_boolean sect0_vle, sectj_vle;
2432
2433 /* At this point in the link, output sections have already been sorted by
2434 LMA and assigned to segments. All that is left to do is to ensure
2435 there is no mixing of VLE & non-VLE sections in a text segment.
2436 If we find that case, we split the segment.
2437 We maintain the original output section order. */
2438
12bd6957 2439 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
b9c361e0
JL
2440 {
2441 if (m->count == 0)
2442 continue;
2443
94caa966 2444 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
b9c361e0
JL
2445 for (j = 1; j < m->count; ++j)
2446 {
94caa966
AM
2447 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2448
2449 if (sectj_vle != sect0_vle)
b9c361e0
JL
2450 break;
2451 }
2452 if (j >= m->count)
2453 continue;
2454
b9c361e0
JL
2455 /* sections 0..j-1 stay in this (current) segment,
2456 the remainder are put in a new segment.
2457 The scan resumes with the new segment. */
2458
2459 /* Fix the new segment. */
2460 amt = sizeof (struct elf_segment_map);
2461 amt += (m->count - j - 1) * sizeof (asection *);
2462 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2463 if (n == NULL)
2464 return FALSE;
2465
2466 n->p_type = PT_LOAD;
2467 n->p_flags = PF_X | PF_R;
2468 if (sectj_vle)
2469 n->p_flags |= PF_PPC_VLE;
2470 n->count = m->count - j;
2471 for (k = 0; k < n->count; ++k)
2472 {
2473 n->sections[k] = m->sections[j+k];
2474 m->sections[j+k] = NULL;
2475 }
2476 n->next = m->next;
2477 m->next = n;
2478
2479 /* Fix the current segment */
2480 m->count = j;
2481 }
2482
2483 return TRUE;
2484}
2485
25dbc73a
AM
2486/* Add extra PPC sections -- Note, for now, make .sbss2 and
2487 .PPC.EMB.sbss0 a normal section, and not a bss section so
2488 that the linker doesn't crater when trying to make more than
2489 2 sections. */
e656e369 2490
b35d266b 2491static const struct bfd_elf_special_section ppc_elf_special_sections[] =
7f4d3958 2492{
0112cd26
NC
2493 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2494 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2495 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2496 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2497 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2498 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2499 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2500 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2501 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2502 { NULL, 0, 0, 0, 0 }
7f4d3958
L
2503};
2504
551b43fd
AM
2505/* This is what we want for new plt/got. */
2506static struct bfd_elf_special_section ppc_alt_plt =
0112cd26 2507 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
551b43fd
AM
2508
2509static const struct bfd_elf_special_section *
2510ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
7f4d3958 2511{
b35d266b 2512 const struct bfd_elf_special_section *ssect;
551b43fd
AM
2513
2514 /* See if this is one of the special sections. */
2515 if (sec->name == NULL)
2516 return NULL;
2517
2518 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2519 sec->use_rela_p);
2520 if (ssect != NULL)
2521 {
2522 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2523 ssect = &ppc_alt_plt;
2524 return ssect;
2525 }
2526
2527 return _bfd_elf_get_sec_type_attr (abfd, sec);
2528}
25dbc73a
AM
2529\f
2530/* Very simple linked list structure for recording apuinfo values. */
2531typedef struct apuinfo_list
2532{
2533 struct apuinfo_list *next;
2534 unsigned long value;
2535}
2536apuinfo_list;
e656e369 2537
25dbc73a 2538static apuinfo_list *head;
f2faa800 2539static bfd_boolean apuinfo_set;
deaaf2f3 2540
25dbc73a
AM
2541static void
2542apuinfo_list_init (void)
2543{
2544 head = NULL;
f2faa800 2545 apuinfo_set = FALSE;
25dbc73a 2546}
9abc968f 2547
25dbc73a
AM
2548static void
2549apuinfo_list_add (unsigned long value)
2550{
2551 apuinfo_list *entry = head;
deaaf2f3 2552
25dbc73a
AM
2553 while (entry != NULL)
2554 {
2555 if (entry->value == value)
2556 return;
2557 entry = entry->next;
2558 }
b4a38de6 2559
25dbc73a
AM
2560 entry = bfd_malloc (sizeof (* entry));
2561 if (entry == NULL)
2562 return;
e656e369 2563
25dbc73a
AM
2564 entry->value = value;
2565 entry->next = head;
2566 head = entry;
2567}
9abc968f 2568
25dbc73a
AM
2569static unsigned
2570apuinfo_list_length (void)
2571{
2572 apuinfo_list *entry;
2573 unsigned long count;
9abc968f 2574
25dbc73a
AM
2575 for (entry = head, count = 0;
2576 entry;
2577 entry = entry->next)
2578 ++ count;
e656e369 2579
25dbc73a
AM
2580 return count;
2581}
eea6121a 2582
25dbc73a
AM
2583static inline unsigned long
2584apuinfo_list_element (unsigned long number)
2585{
2586 apuinfo_list * entry;
e656e369 2587
25dbc73a
AM
2588 for (entry = head;
2589 entry && number --;
2590 entry = entry->next)
2591 ;
252b5132 2592
25dbc73a
AM
2593 return entry ? entry->value : 0;
2594}
2595
2596static void
2597apuinfo_list_finish (void)
2598{
2599 apuinfo_list *entry;
2600
2601 for (entry = head; entry;)
252b5132 2602 {
25dbc73a
AM
2603 apuinfo_list *next = entry->next;
2604 free (entry);
2605 entry = next;
2606 }
9abc968f 2607
25dbc73a
AM
2608 head = NULL;
2609}
9abc968f 2610
25dbc73a
AM
2611#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2612#define APUINFO_LABEL "APUinfo"
9abc968f 2613
25dbc73a
AM
2614/* Scan the input BFDs and create a linked list of
2615 the APUinfo values that will need to be emitted. */
9abc968f 2616
25dbc73a
AM
2617static void
2618ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2619{
2620 bfd *ibfd;
2621 asection *asec;
deddc40b
NS
2622 char *buffer = NULL;
2623 bfd_size_type largest_input_size = 0;
25dbc73a 2624 unsigned i;
25dbc73a
AM
2625 unsigned long length;
2626 const char *error_message = NULL;
9abc968f 2627
25dbc73a
AM
2628 if (link_info == NULL)
2629 return;
9abc968f 2630
25dbc73a 2631 apuinfo_list_init ();
252b5132 2632
25dbc73a
AM
2633 /* Read in the input sections contents. */
2634 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 2635 {
25dbc73a 2636 unsigned long datum;
252b5132 2637
25dbc73a
AM
2638 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2639 if (asec == NULL)
2640 continue;
252b5132 2641
deddc40b 2642 error_message = _("corrupt %s section in %B");
25dbc73a 2643 length = asec->size;
deddc40b
NS
2644 if (length < 20)
2645 goto fail;
2646
f2faa800 2647 apuinfo_set = TRUE;
deddc40b 2648 if (largest_input_size < asec->size)
25dbc73a 2649 {
deddc40b
NS
2650 if (buffer)
2651 free (buffer);
2652 largest_input_size = asec->size;
2653 buffer = bfd_malloc (largest_input_size);
2654 if (!buffer)
2655 return;
25dbc73a 2656 }
5b914448 2657
25dbc73a 2658 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
deddc40b 2659 || (bfd_bread (buffer, length, ibfd) != length))
25dbc73a
AM
2660 {
2661 error_message = _("unable to read in %s section from %B");
2662 goto fail;
2663 }
252b5132 2664
25dbc73a
AM
2665 /* Verify the contents of the header. Note - we have to
2666 extract the values this way in order to allow for a
2667 host whose endian-ness is different from the target. */
deddc40b 2668 datum = bfd_get_32 (ibfd, buffer);
25dbc73a
AM
2669 if (datum != sizeof APUINFO_LABEL)
2670 goto fail;
252b5132 2671
deddc40b 2672 datum = bfd_get_32 (ibfd, buffer + 8);
25dbc73a
AM
2673 if (datum != 0x2)
2674 goto fail;
252b5132 2675
deddc40b 2676 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
25dbc73a 2677 goto fail;
252b5132 2678
25dbc73a 2679 /* Get the number of bytes used for apuinfo entries. */
deddc40b 2680 datum = bfd_get_32 (ibfd, buffer + 4);
25dbc73a
AM
2681 if (datum + 20 != length)
2682 goto fail;
2683
25dbc73a
AM
2684 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2685 for (i = 0; i < datum; i += 4)
deddc40b 2686 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
252b5132
RH
2687 }
2688
25dbc73a 2689 error_message = NULL;
252b5132 2690
f2faa800 2691 if (apuinfo_set)
deddc40b 2692 {
f2faa800
NS
2693 /* Compute the size of the output section. */
2694 unsigned num_entries = apuinfo_list_length ();
5b914448 2695
deddc40b
NS
2696 /* Set the output section size, if it exists. */
2697 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
f2faa800 2698
deddc40b
NS
2699 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2700 {
2701 ibfd = abfd;
2702 error_message = _("warning: unable to set size of %s section in %B");
2703 }
2704 }
25dbc73a
AM
2705
2706 fail:
deddc40b
NS
2707 if (buffer)
2708 free (buffer);
25dbc73a
AM
2709
2710 if (error_message)
2711 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2712}
252b5132 2713
25dbc73a
AM
2714/* Prevent the output section from accumulating the input sections'
2715 contents. We have already stored this in our linked list structure. */
252b5132 2716
25dbc73a
AM
2717static bfd_boolean
2718ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
c7b8f16e 2719 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
25dbc73a
AM
2720 asection *asec,
2721 bfd_byte *contents ATTRIBUTE_UNUSED)
2722{
f2faa800 2723 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
252b5132
RH
2724}
2725
25dbc73a
AM
2726/* Finally we can generate the output section. */
2727
2728static void
2729ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 2730{
25dbc73a
AM
2731 bfd_byte *buffer;
2732 asection *asec;
2733 unsigned i;
2734 unsigned num_entries;
2735 bfd_size_type length;
7619e7c7 2736
25dbc73a
AM
2737 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2738 if (asec == NULL)
2739 return;
2740
f2faa800 2741 if (!apuinfo_set)
25dbc73a
AM
2742 return;
2743
2744 length = asec->size;
2745 if (length < 20)
2746 return;
2747
2748 buffer = bfd_malloc (length);
2749 if (buffer == NULL)
7619e7c7 2750 {
25dbc73a
AM
2751 (*_bfd_error_handler)
2752 (_("failed to allocate space for new APUinfo section."));
2753 return;
7619e7c7 2754 }
7619e7c7 2755
25dbc73a
AM
2756 /* Create the apuinfo header. */
2757 num_entries = apuinfo_list_length ();
2758 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2759 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2760 bfd_put_32 (abfd, 0x2, buffer + 8);
2761 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2762
25dbc73a
AM
2763 length = 20;
2764 for (i = 0; i < num_entries; i++)
feee612b 2765 {
25dbc73a
AM
2766 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2767 length += 4;
feee612b 2768 }
feee612b 2769
25dbc73a
AM
2770 if (length != asec->size)
2771 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2772
25dbc73a
AM
2773 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2774 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2775
25dbc73a
AM
2776 free (buffer);
2777
2778 apuinfo_list_finish ();
252b5132 2779}
25dbc73a 2780\f
7382d32a 2781static bfd_boolean
c6dd29ce 2782is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
7382d32a 2783{
c6dd29ce 2784 bfd_byte buf[GLINK_ENTRY_SIZE];
7382d32a 2785
c6dd29ce 2786 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
7382d32a
AM
2787 return FALSE;
2788
c6dd29ce
AM
2789 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2790 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2791 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2792 && bfd_get_32 (abfd, buf + 12) == BCTR);
7382d32a
AM
2793}
2794
468392fb
AM
2795static bfd_boolean
2796section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2797{
2798 bfd_vma vma = *(bfd_vma *) ptr;
2799 return ((section->flags & SEC_ALLOC) != 0
2800 && section->vma <= vma
2801 && vma < section->vma + section->size);
2802}
2803
2804static long
2805ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2806 long dynsymcount, asymbol **dynsyms,
2807 asymbol **ret)
2808{
2809 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2810 asection *plt, *relplt, *dynamic, *glink;
2811 bfd_vma glink_vma = 0;
2812 bfd_vma resolv_vma = 0;
2813 bfd_vma stub_vma;
2814 asymbol *s;
2815 arelent *p;
2816 long count, i;
2817 size_t size;
2818 char *names;
2819 bfd_byte buf[4];
2820
2821 *ret = NULL;
2822
2823 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2824 return 0;
2825
2826 if (dynsymcount <= 0)
2827 return 0;
2828
2829 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2830 if (relplt == NULL)
2831 return 0;
2832
2833 plt = bfd_get_section_by_name (abfd, ".plt");
2834 if (plt == NULL)
2835 return 0;
2836
2837 /* Call common code to handle old-style executable PLTs. */
2838 if (elf_section_flags (plt) & SHF_EXECINSTR)
2839 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2840 dynsymcount, dynsyms, ret);
2841
2842 /* If this object was prelinked, the prelinker stored the address
2843 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2844 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2845 if (dynamic != NULL)
2846 {
2847 bfd_byte *dynbuf, *extdyn, *extdynend;
2848 size_t extdynsize;
2849 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2850
2851 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2852 return -1;
2853
2854 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2855 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2856
2857 extdyn = dynbuf;
2858 extdynend = extdyn + dynamic->size;
2859 for (; extdyn < extdynend; extdyn += extdynsize)
2860 {
2861 Elf_Internal_Dyn dyn;
2862 (*swap_dyn_in) (abfd, extdyn, &dyn);
2863
2864 if (dyn.d_tag == DT_NULL)
2865 break;
2866
2867 if (dyn.d_tag == DT_PPC_GOT)
2868 {
2869 unsigned int g_o_t = dyn.d_un.d_val;
2870 asection *got = bfd_get_section_by_name (abfd, ".got");
2871 if (got != NULL
2872 && bfd_get_section_contents (abfd, got, buf,
2873 g_o_t - got->vma + 4, 4))
2874 glink_vma = bfd_get_32 (abfd, buf);
2875 break;
2876 }
2877 }
2878 free (dynbuf);
2879 }
2880
2881 /* Otherwise we read the first plt entry. */
2882 if (glink_vma == 0)
2883 {
2884 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2885 glink_vma = bfd_get_32 (abfd, buf);
2886 }
2887
2888 if (glink_vma == 0)
2889 return 0;
2890
2891 /* The .glink section usually does not survive the final
2892 link; search for the section (usually .text) where the
2893 glink stubs now reside. */
2894 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2895 if (glink == NULL)
2896 return 0;
2897
2898 /* Determine glink PLT resolver by reading the relative branch
2899 from the first glink stub. */
2900 if (bfd_get_section_contents (abfd, glink, buf,
2901 glink_vma - glink->vma, 4))
2902 {
2903 unsigned int insn = bfd_get_32 (abfd, buf);
2904
2905 /* The first glink stub may either branch to the resolver ... */
2906 insn ^= B;
2907 if ((insn & ~0x3fffffc) == 0)
2908 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2909
2910 /* ... or fall through a bunch of NOPs. */
2911 else if ((insn ^ B ^ NOP) == 0)
2912 for (i = 4;
2913 bfd_get_section_contents (abfd, glink, buf,
2914 glink_vma - glink->vma + i, 4);
2915 i += 4)
2916 if (bfd_get_32 (abfd, buf) != NOP)
2917 {
2918 resolv_vma = glink_vma + i;
2919 break;
2920 }
2921 }
2922
7382d32a
AM
2923 count = relplt->size / sizeof (Elf32_External_Rela);
2924 stub_vma = glink_vma - (bfd_vma) count * 16;
2925 /* If the stubs are those for -shared/-pie then we might have
2926 multiple stubs for each plt entry. If that is the case then
2927 there is no way to associate stubs with their plt entries short
2928 of figuring out the GOT pointer value used in the stub. */
c6dd29ce
AM
2929 if (!is_nonpic_glink_stub (abfd, glink,
2930 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
7382d32a
AM
2931 return 0;
2932
468392fb
AM
2933 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2934 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2935 return -1;
2936
468392fb
AM
2937 size = count * sizeof (asymbol);
2938 p = relplt->relocation;
2939 for (i = 0; i < count; i++, p++)
e054468f
AM
2940 {
2941 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2942 if (p->addend != 0)
2943 size += sizeof ("+0x") - 1 + 8;
2944 }
468392fb
AM
2945
2946 size += sizeof (asymbol) + sizeof ("__glink");
2947
2948 if (resolv_vma)
2949 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2950
2951 s = *ret = bfd_malloc (size);
2952 if (s == NULL)
2953 return -1;
2954
2955 names = (char *) (s + count + 1 + (resolv_vma != 0));
2956 p = relplt->relocation;
2957 for (i = 0; i < count; i++, p++)
2958 {
2959 size_t len;
2960
2961 *s = **p->sym_ptr_ptr;
2962 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2963 we are defining a symbol, ensure one of them is set. */
2964 if ((s->flags & BSF_LOCAL) == 0)
2965 s->flags |= BSF_GLOBAL;
6ba2a415 2966 s->flags |= BSF_SYNTHETIC;
468392fb
AM
2967 s->section = glink;
2968 s->value = stub_vma - glink->vma;
2969 s->name = names;
2970 s->udata.p = NULL;
2971 len = strlen ((*p->sym_ptr_ptr)->name);
2972 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2973 names += len;
e054468f
AM
2974 if (p->addend != 0)
2975 {
2976 memcpy (names, "+0x", sizeof ("+0x") - 1);
2977 names += sizeof ("+0x") - 1;
2978 bfd_sprintf_vma (abfd, names, p->addend);
2979 names += strlen (names);
2980 }
468392fb
AM
2981 memcpy (names, "@plt", sizeof ("@plt"));
2982 names += sizeof ("@plt");
2983 ++s;
2984 stub_vma += 16;
2985 }
2986
2987 /* Add a symbol at the start of the glink branch table. */
86a4952b 2988 memset (s, 0, sizeof *s);
468392fb 2989 s->the_bfd = abfd;
6ba2a415 2990 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
2991 s->section = glink;
2992 s->value = glink_vma - glink->vma;
2993 s->name = names;
2994 memcpy (names, "__glink", sizeof ("__glink"));
2995 names += sizeof ("__glink");
2996 s++;
2997 count++;
2998
2999 if (resolv_vma)
3000 {
3001 /* Add a symbol for the glink PLT resolver. */
86a4952b 3002 memset (s, 0, sizeof *s);
468392fb 3003 s->the_bfd = abfd;
6ba2a415 3004 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3005 s->section = glink;
3006 s->value = resolv_vma - glink->vma;
3007 s->name = names;
3008 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3009 names += sizeof ("__glink_PLTresolve");
3010 s++;
3011 count++;
3012 }
3013
3014 return count;
3015}
3016\f
25dbc73a
AM
3017/* The following functions are specific to the ELF linker, while
3018 functions above are used generally. They appear in this file more
3019 or less in the order in which they are called. eg.
3020 ppc_elf_check_relocs is called early in the link process,
3021 ppc_elf_finish_dynamic_sections is one of the last functions
3022 called. */
252b5132 3023
a6aa5195 3024/* Track PLT entries needed for a given symbol. We might need more
a877a2b6 3025 than one glink entry per symbol when generating a pic binary. */
a6aa5195
AM
3026struct plt_entry
3027{
3028 struct plt_entry *next;
3029
3030 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3031 This field stores the offset into .got2 used to initialise the
a877a2b6
AM
3032 GOT pointer reg. It will always be at least 32768. (Current
3033 gcc always uses an offset of 32768, but ld -r will pack .got2
3034 sections together resulting in larger offsets). */
a6aa5195
AM
3035 bfd_vma addend;
3036
3037 /* The .got2 section. */
3038 asection *sec;
3039
3040 /* PLT refcount or offset. */
3041 union
3042 {
3043 bfd_signed_vma refcount;
3044 bfd_vma offset;
3045 } plt;
3046
3047 /* .glink stub offset. */
3048 bfd_vma glink_offset;
3049};
3050
1d483afe 3051/* Of those relocs that might be copied as dynamic relocs, this function
25dbc73a
AM
3052 selects those that must be copied when linking a shared library,
3053 even when the symbol is local. */
252b5132 3054
1d483afe
AM
3055static int
3056must_be_dyn_reloc (struct bfd_link_info *info,
3057 enum elf_ppc_reloc_type r_type)
3058{
3059 switch (r_type)
3060 {
3061 default:
3062 return 1;
3063
3064 case R_PPC_REL24:
3065 case R_PPC_REL14:
3066 case R_PPC_REL14_BRTAKEN:
3067 case R_PPC_REL14_BRNTAKEN:
3068 case R_PPC_REL32:
3069 return 0;
3070
3071 case R_PPC_TPREL32:
3072 case R_PPC_TPREL16:
3073 case R_PPC_TPREL16_LO:
3074 case R_PPC_TPREL16_HI:
3075 case R_PPC_TPREL16_HA:
3076 return !info->executable;
3077 }
3078}
252b5132 3079
25dbc73a
AM
3080/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3081 copying dynamic variables from a shared lib into an app's dynbss
3082 section, and instead use a dynamic relocation to point into the
3083 shared lib. */
3084#define ELIMINATE_COPY_RELOCS 1
252b5132 3085
f95f8542
AM
3086/* Used to track dynamic relocations for local symbols. */
3087struct ppc_dyn_relocs
3088{
3089 struct ppc_dyn_relocs *next;
3090
3091 /* The input section of the reloc. */
3092 asection *sec;
3093
3094 /* Total number of relocs copied for the input section. */
3095 unsigned int count : 31;
3096
3097 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3098 unsigned int ifunc : 1;
3099};
3100
25dbc73a 3101/* PPC ELF linker hash entry. */
252b5132 3102
25dbc73a
AM
3103struct ppc_elf_link_hash_entry
3104{
3105 struct elf_link_hash_entry elf;
252b5132 3106
25dbc73a
AM
3107 /* If this symbol is used in the linker created sections, the processor
3108 specific backend uses this field to map the field into the offset
3109 from the beginning of the section. */
3110 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 3111
25dbc73a 3112 /* Track dynamic relocs copied for this symbol. */
6061a67d 3113 struct elf_dyn_relocs *dyn_relocs;
252b5132 3114
25dbc73a
AM
3115 /* Contexts in which symbol is used in the GOT (or TOC).
3116 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3117 corresponding relocs are encountered during check_relocs.
3118 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3119 indicate the corresponding GOT entry type is not needed. */
3120#define TLS_GD 1 /* GD reloc. */
3121#define TLS_LD 2 /* LD reloc. */
3122#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3123#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3124#define TLS_TLS 16 /* Any TLS reloc. */
3125#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
e054468f 3126#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
25dbc73a 3127 char tls_mask;
4dc4a9a5
DJ
3128
3129 /* Nonzero if we have seen a small data relocation referring to this
3130 symbol. */
3131 unsigned char has_sda_refs;
25dbc73a 3132};
252b5132 3133
25dbc73a
AM
3134#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3135
3136/* PPC ELF linker hash table. */
3137
3138struct ppc_elf_link_hash_table
3139{
3140 struct elf_link_hash_table elf;
3141
3142 /* Short-cuts to get to dynamic linker sections. */
3143 asection *got;
3144 asection *relgot;
d7128ce4 3145 asection *glink;
25dbc73a
AM
3146 asection *plt;
3147 asection *relplt;
e054468f
AM
3148 asection *iplt;
3149 asection *reliplt;
25dbc73a
AM
3150 asection *dynbss;
3151 asection *relbss;
3152 asection *dynsbss;
3153 asection *relsbss;
c9a2f333 3154 elf_linker_section_t sdata[2];
25dbc73a 3155 asection *sbss;
6177242a 3156 asection *glink_eh_frame;
25dbc73a 3157
016687f8
AM
3158 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3159 asection *srelplt2;
3160
3161 /* The .got.plt section (VxWorks only)*/
3162 asection *sgotplt;
3163
1d483afe 3164 /* Shortcut to __tls_get_addr. */
25dbc73a 3165 struct elf_link_hash_entry *tls_get_addr;
252b5132 3166
016687f8
AM
3167 /* The bfd that forced an old-style PLT. */
3168 bfd *old_bfd;
5b914448 3169
25dbc73a
AM
3170 /* TLS local dynamic got entry handling. */
3171 union {
3172 bfd_signed_vma refcount;
3173 bfd_vma offset;
3174 } tlsld_got;
252b5132 3175
c6dd29ce 3176 /* Offset of branch table to PltResolve function in glink. */
d7128ce4
AM
3177 bfd_vma glink_pltresolve;
3178
3b36f7e6
AM
3179 /* Size of reserved GOT entries. */
3180 unsigned int got_header_size;
3181 /* Non-zero if allocating the header left a gap. */
3182 unsigned int got_gap;
3183
4a3dc543
RS
3184 /* The type of PLT we have chosen to use. */
3185 enum ppc_elf_plt_type plt_type;
3186
0ba07910
AM
3187 /* Set if we should emit symbols for stubs. */
3188 unsigned int emit_stub_syms:1;
3189
a7f2871e
AM
3190 /* Set if __tls_get_addr optimization should not be done. */
3191 unsigned int no_tls_get_addr_opt:1;
3192
9d8504b1 3193 /* True if the target system is VxWorks. */
016687f8 3194 unsigned int is_vxworks:1;
9d8504b1
PB
3195
3196 /* The size of PLT entries. */
3197 int plt_entry_size;
3198 /* The distance between adjacent PLT slots. */
3199 int plt_slot_size;
3200 /* The size of the first PLT entry. */
3201 int plt_initial_entry_size;
016687f8 3202
87d72d41
AM
3203 /* Small local sym cache. */
3204 struct sym_cache sym_cache;
25dbc73a 3205};
252b5132 3206
94caa966
AM
3207/* Rename some of the generic section flags to better document how they
3208 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3209
3210/* Nonzero if this section has TLS related relocations. */
3211#define has_tls_reloc sec_flg0
3212
3213/* Nonzero if this section has a call to __tls_get_addr. */
3214#define has_tls_get_addr_call sec_flg1
3215
25dbc73a 3216/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 3217
25dbc73a 3218#define ppc_elf_hash_table(p) \
4dfe6ac6
NC
3219 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3220 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
252b5132 3221
25dbc73a 3222/* Create an entry in a PPC ELF linker hash table. */
252b5132 3223
25dbc73a
AM
3224static struct bfd_hash_entry *
3225ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3226 struct bfd_hash_table *table,
3227 const char *string)
252b5132 3228{
25dbc73a
AM
3229 /* Allocate the structure if it has not already been allocated by a
3230 subclass. */
3231 if (entry == NULL)
3232 {
3233 entry = bfd_hash_allocate (table,
3234 sizeof (struct ppc_elf_link_hash_entry));
3235 if (entry == NULL)
3236 return entry;
3237 }
252b5132 3238
25dbc73a
AM
3239 /* Call the allocation method of the superclass. */
3240 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3241 if (entry != NULL)
3242 {
3243 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3244 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3245 ppc_elf_hash_entry (entry)->tls_mask = 0;
5240d94d 3246 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
25dbc73a 3247 }
252b5132 3248
25dbc73a 3249 return entry;
252b5132 3250}
3dab13f6 3251
25dbc73a 3252/* Create a PPC ELF linker hash table. */
3dab13f6 3253
25dbc73a
AM
3254static struct bfd_link_hash_table *
3255ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 3256{
25dbc73a 3257 struct ppc_elf_link_hash_table *ret;
3dab13f6 3258
25dbc73a
AM
3259 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3260 if (ret == NULL)
3261 return NULL;
3dab13f6 3262
66eb6687
AM
3263 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3264 ppc_elf_link_hash_newfunc,
4dfe6ac6
NC
3265 sizeof (struct ppc_elf_link_hash_entry),
3266 PPC32_ELF_DATA))
3dab13f6 3267 {
25dbc73a
AM
3268 free (ret);
3269 return NULL;
3270 }
58111eb7 3271
a6aa5195
AM
3272 ret->elf.init_plt_refcount.refcount = 0;
3273 ret->elf.init_plt_refcount.glist = NULL;
3274 ret->elf.init_plt_offset.offset = 0;
3275 ret->elf.init_plt_offset.glist = NULL;
3276
c9a2f333
AM
3277 ret->sdata[0].name = ".sdata";
3278 ret->sdata[0].sym_name = "_SDA_BASE_";
3279 ret->sdata[0].bss_name = ".sbss";
3280
3281 ret->sdata[1].name = ".sdata2";
3282 ret->sdata[1].sym_name = "_SDA2_BASE_";
3283 ret->sdata[1].bss_name = ".sbss2";
3284
9d8504b1
PB
3285 ret->plt_entry_size = 12;
3286 ret->plt_slot_size = 8;
3287 ret->plt_initial_entry_size = 72;
9d8504b1 3288
25dbc73a
AM
3289 return &ret->elf.root;
3290}
3dab13f6 3291
9d8504b1 3292/* Create .got and the related sections. */
3dab13f6 3293
25dbc73a
AM
3294static bfd_boolean
3295ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3296{
3297 struct ppc_elf_link_hash_table *htab;
3298 asection *s;
3299 flagword flags;
3dab13f6 3300
25dbc73a
AM
3301 if (!_bfd_elf_create_got_section (abfd, info))
3302 return FALSE;
3dab13f6 3303
25dbc73a 3304 htab = ppc_elf_hash_table (info);
3d4d4302 3305 htab->got = s = bfd_get_linker_section (abfd, ".got");
25dbc73a
AM
3306 if (s == NULL)
3307 abort ();
3dab13f6 3308
9d8504b1
PB
3309 if (htab->is_vxworks)
3310 {
3d4d4302 3311 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
9d8504b1
PB
3312 if (!htab->sgotplt)
3313 abort ();
3314 }
3315 else
3316 {
3317 /* The powerpc .got has a blrl instruction in it. Mark it
3318 executable. */
3319 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3320 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3321 if (!bfd_set_section_flags (abfd, s, flags))
3322 return FALSE;
3323 }
3dab13f6 3324
3d4d4302 3325 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
64e77c6d
L
3326 if (!htab->relgot)
3327 abort ();
3dab13f6 3328
25dbc73a
AM
3329 return TRUE;
3330}
3dab13f6 3331
e054468f
AM
3332static bfd_boolean
3333ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3334{
3335 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3336 asection *s;
3337 flagword flags;
3338
3339 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3340 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3341 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3342 htab->glink = s;
3343 if (s == NULL
3344 || !bfd_set_section_alignment (abfd, s, 4))
3345 return FALSE;
3346
6177242a
AM
3347 if (!info->no_ld_generated_unwind_info)
3348 {
3349 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3350 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3351 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3352 htab->glink_eh_frame = s;
3353 if (s == NULL
3354 || !bfd_set_section_alignment (abfd, s, 2))
3355 return FALSE;
3356 }
3357
e054468f
AM
3358 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3359 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3360 htab->iplt = s;
3361 if (s == NULL
3362 || !bfd_set_section_alignment (abfd, s, 4))
3363 return FALSE;
3364
3365 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3366 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3367 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
e054468f
AM
3368 htab->reliplt = s;
3369 if (s == NULL
3370 || ! bfd_set_section_alignment (abfd, s, 2))
3371 return FALSE;
3372 return TRUE;
3373}
3374
25dbc73a
AM
3375/* We have to create .dynsbss and .rela.sbss here so that they get mapped
3376 to output sections (just like _bfd_elf_create_dynamic_sections has
3377 to create .dynbss and .rela.bss). */
3dab13f6 3378
25dbc73a
AM
3379static bfd_boolean
3380ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3381{
3382 struct ppc_elf_link_hash_table *htab;
3383 asection *s;
3384 flagword flags;
3dab13f6 3385
25dbc73a 3386 htab = ppc_elf_hash_table (info);
3dab13f6 3387
25dbc73a
AM
3388 if (htab->got == NULL
3389 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM
3390 return FALSE;
3391
25dbc73a
AM
3392 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3393 return FALSE;
3dab13f6 3394
e054468f
AM
3395 if (htab->glink == NULL
3396 && !ppc_elf_create_glink (abfd, info))
d7128ce4 3397 return FALSE;
3dab13f6 3398
3d4d4302 3399 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
14b2f831
AM
3400 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3401 SEC_ALLOC | SEC_LINKER_CREATED);
3b36f7e6 3402 htab->dynsbss = s;
3496cb2a 3403 if (s == NULL)
25dbc73a 3404 return FALSE;
3dab13f6 3405
25dbc73a
AM
3406 if (! info->shared)
3407 {
3d4d4302 3408 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
e054468f
AM
3409 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3410 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
14b2f831 3411 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3b36f7e6 3412 htab->relsbss = s;
25dbc73a 3413 if (s == NULL
25dbc73a
AM
3414 || ! bfd_set_section_alignment (abfd, s, 2))
3415 return FALSE;
3416 }
3dab13f6 3417
711de32c
RS
3418 if (htab->is_vxworks
3419 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3420 return FALSE;
9d8504b1 3421
3d4d4302
AM
3422 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3423 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
25dbc73a
AM
3424 if (s == NULL)
3425 abort ();
3dab13f6 3426
3b36f7e6 3427 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
4a3dc543
RS
3428 if (htab->plt_type == PLT_VXWORKS)
3429 /* The VxWorks PLT is a loaded section with contents. */
3430 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
25dbc73a
AM
3431 return bfd_set_section_flags (abfd, s, flags);
3432}
3dab13f6 3433
25dbc73a 3434/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 3435
25dbc73a 3436static void
fcfa13d2 3437ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
25dbc73a
AM
3438 struct elf_link_hash_entry *dir,
3439 struct elf_link_hash_entry *ind)
3440{
3441 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 3442
25dbc73a
AM
3443 edir = (struct ppc_elf_link_hash_entry *) dir;
3444 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 3445
c79d6685
AM
3446 edir->tls_mask |= eind->tls_mask;
3447 edir->has_sda_refs |= eind->has_sda_refs;
3448
3449 /* If called to transfer flags for a weakdef during processing
3450 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3451 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3452 if (!(ELIMINATE_COPY_RELOCS
3453 && eind->elf.root.type != bfd_link_hash_indirect
3454 && edir->elf.dynamic_adjusted))
3455 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3456
3457 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3458 edir->elf.ref_regular |= eind->elf.ref_regular;
3459 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3460 edir->elf.needs_plt |= eind->elf.needs_plt;
3461 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3462
25dbc73a
AM
3463 if (eind->dyn_relocs != NULL)
3464 {
3465 if (edir->dyn_relocs != NULL)
3dab13f6 3466 {
6061a67d
AM
3467 struct elf_dyn_relocs **pp;
3468 struct elf_dyn_relocs *p;
3dab13f6 3469
fcfa13d2 3470 /* Add reloc counts against the indirect sym to the direct sym
25dbc73a
AM
3471 list. Merge any entries against the same section. */
3472 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 3473 {
6061a67d 3474 struct elf_dyn_relocs *q;
25dbc73a
AM
3475
3476 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3477 if (q->sec == p->sec)
3478 {
3479 q->pc_count += p->pc_count;
3480 q->count += p->count;
3481 *pp = p->next;
3482 break;
3483 }
3484 if (q == NULL)
3485 pp = &p->next;
3dab13f6 3486 }
25dbc73a 3487 *pp = edir->dyn_relocs;
3dab13f6 3488 }
25dbc73a
AM
3489
3490 edir->dyn_relocs = eind->dyn_relocs;
3491 eind->dyn_relocs = NULL;
3dab13f6 3492 }
3dab13f6 3493
68ba6d40
AM
3494 /* If we were called to copy over info for a weak sym, that's all.
3495 You might think dyn_relocs need not be copied over; After all,
3496 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 3497 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM
3498 code in ppc_elf_adjust_dynamic_symbol needs to check for
3499 dyn_relocs in read-only sections, and it does so on what is the
3500 DIR sym here. */
3501 if (eind->elf.root.type != bfd_link_hash_indirect)
3502 return;
3503
a6aa5195
AM
3504 /* Copy over the GOT refcount entries that we may have already seen to
3505 the symbol which just became indirect. */
fcfa13d2
AM
3506 edir->elf.got.refcount += eind->elf.got.refcount;
3507 eind->elf.got.refcount = 0;
a6aa5195
AM
3508
3509 /* And plt entries. */
3510 if (eind->elf.plt.plist != NULL)
3511 {
3512 if (edir->elf.plt.plist != NULL)
3513 {
3514 struct plt_entry **entp;
3515 struct plt_entry *ent;
3516
3517 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3518 {
3519 struct plt_entry *dent;
3520
3521 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3522 if (dent->sec == ent->sec && dent->addend == ent->addend)
3523 {
3524 dent->plt.refcount += ent->plt.refcount;
3525 *entp = ent->next;
3526 break;
3527 }
3528 if (dent == NULL)
3529 entp = &ent->next;
3530 }
3531 *entp = edir->elf.plt.plist;
3532 }
3533
3534 edir->elf.plt.plist = eind->elf.plt.plist;
3535 eind->elf.plt.plist = NULL;
3536 }
3537
fcfa13d2 3538 if (eind->elf.dynindx != -1)
25dbc73a 3539 {
fcfa13d2
AM
3540 if (edir->elf.dynindx != -1)
3541 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3542 edir->elf.dynstr_index);
a6aa5195
AM
3543 edir->elf.dynindx = eind->elf.dynindx;
3544 edir->elf.dynstr_index = eind->elf.dynstr_index;
3545 eind->elf.dynindx = -1;
3546 eind->elf.dynstr_index = 0;
25dbc73a 3547 }
25dbc73a 3548}
3dab13f6 3549
25dbc73a
AM
3550/* Hook called by the linker routine which adds symbols from an object
3551 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 3552
25dbc73a
AM
3553static bfd_boolean
3554ppc_elf_add_symbol_hook (bfd *abfd,
3555 struct bfd_link_info *info,
3556 Elf_Internal_Sym *sym,
3557 const char **namep ATTRIBUTE_UNUSED,
3558 flagword *flagsp ATTRIBUTE_UNUSED,
3559 asection **secp,
3560 bfd_vma *valp)
3561{
3562 if (sym->st_shndx == SHN_COMMON
3563 && !info->relocatable
0c8d6e5c
AM
3564 && is_ppc_elf (info->output_bfd)
3565 && sym->st_size <= elf_gp_size (abfd))
25dbc73a
AM
3566 {
3567 /* Common symbols less than or equal to -G nn bytes are automatically
3568 put into .sbss. */
3569 struct ppc_elf_link_hash_table *htab;
3dab13f6 3570
25dbc73a
AM
3571 htab = ppc_elf_hash_table (info);
3572 if (htab->sbss == NULL)
3573 {
644285ef 3574 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 3575
644285ef
AM
3576 if (!htab->elf.dynobj)
3577 htab->elf.dynobj = abfd;
3578
3496cb2a
L
3579 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3580 ".sbss",
3581 flags);
3582 if (htab->sbss == NULL)
25dbc73a 3583 return FALSE;
3dab13f6 3584 }
3dab13f6 3585
25dbc73a
AM
3586 *secp = htab->sbss;
3587 *valp = sym->st_size;
3588 }
3dab13f6 3589
c16153ae 3590 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC
3591 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3592 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3593 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
e054468f 3594
25dbc73a 3595 return TRUE;
3dab13f6
AM
3596}
3597\f
046183de 3598static bfd_boolean
bd6c6e2b 3599create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
046183de 3600{
bd6c6e2b
AM
3601 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3602
046183de
AM
3603 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3604 TRUE, FALSE, TRUE);
3605 if (lsect->sym == NULL)
3606 return FALSE;
3607 if (lsect->sym->root.type == bfd_link_hash_new)
3608 lsect->sym->non_elf = 0;
3609 lsect->sym->ref_regular = 1;
bd6c6e2b 3610 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
046183de
AM
3611 return TRUE;
3612}
3613
c9a2f333 3614/* Create a special linker section. */
25dbc73a 3615
c9a2f333 3616static bfd_boolean
55fd94b0
AM
3617ppc_elf_create_linker_section (bfd *abfd,
3618 struct bfd_link_info *info,
c9a2f333
AM
3619 flagword flags,
3620 elf_linker_section_t *lsect)
252b5132 3621{
58111eb7 3622 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 3623 asection *s;
58111eb7 3624
c9a2f333
AM
3625 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3626 | SEC_LINKER_CREATED);
58111eb7
AM
3627
3628 /* Record the first bfd that needs the special sections. */
3629 if (!htab->elf.dynobj)
3630 htab->elf.dynobj = abfd;
3631
3496cb2a
L
3632 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3633 lsect->name,
3634 flags);
76750a2f 3635 if (s == NULL
76750a2f 3636 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 3637 return FALSE;
76750a2f 3638 lsect->section = s;
58111eb7 3639
bd6c6e2b 3640 return create_sdata_sym (info, lsect);
252b5132 3641}
252b5132 3642
25dbc73a
AM
3643/* Find a linker generated pointer with a given addend and type. */
3644
3645static elf_linker_section_pointers_t *
3646elf_find_pointer_linker_section
3647 (elf_linker_section_pointers_t *linker_pointers,
3648 bfd_vma addend,
3649 elf_linker_section_t *lsect)
252b5132 3650{
25dbc73a
AM
3651 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3652 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3653 return linker_pointers;
252b5132 3654
25dbc73a
AM
3655 return NULL;
3656}
3657
3658/* Allocate a pointer to live in a linker created section. */
3659
3660static bfd_boolean
3661elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM
3662 elf_linker_section_t *lsect,
3663 struct elf_link_hash_entry *h,
3664 const Elf_Internal_Rela *rel)
3665{
3666 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3667 elf_linker_section_pointers_t *linker_section_ptr;
3668 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3669 bfd_size_type amt;
3670
3671 BFD_ASSERT (lsect != NULL);
3672
3673 /* Is this a global symbol? */
3674 if (h != NULL)
3675 {
3676 struct ppc_elf_link_hash_entry *eh;
3677
3678 /* Has this symbol already been allocated? If so, our work is done. */
3679 eh = (struct ppc_elf_link_hash_entry *) h;
3680 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3681 rel->r_addend,
3682 lsect))
3683 return TRUE;
3684
3685 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM
3686 }
3687 else
3688 {
0c8d6e5c 3689 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3690
25dbc73a
AM
3691 /* Allocation of a pointer to a local symbol. */
3692 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3693
3694 /* Allocate a table to hold the local symbols if first time. */
3695 if (!ptr)
3696 {
0ffa91dd 3697 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
25dbc73a
AM
3698
3699 amt = num_symbols;
3700 amt *= sizeof (elf_linker_section_pointers_t *);
3701 ptr = bfd_zalloc (abfd, amt);
3702
3703 if (!ptr)
3704 return FALSE;
3705
3706 elf_local_ptr_offsets (abfd) = ptr;
3707 }
3708
3709 /* Has this symbol already been allocated? If so, our work is done. */
3710 if (elf_find_pointer_linker_section (ptr[r_symndx],
3711 rel->r_addend,
3712 lsect))
3713 return TRUE;
252b5132 3714
25dbc73a 3715 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 3716 }
41fcb14e 3717
25dbc73a
AM
3718 /* Allocate space for a pointer in the linker section, and allocate
3719 a new pointer record from internal memory. */
3720 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3721 amt = sizeof (elf_linker_section_pointers_t);
3722 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 3723
25dbc73a 3724 if (!linker_section_ptr)
7619e7c7 3725 return FALSE;
41fcb14e 3726
25dbc73a
AM
3727 linker_section_ptr->next = *ptr_linker_section_ptr;
3728 linker_section_ptr->addend = rel->r_addend;
3729 linker_section_ptr->lsect = lsect;
25dbc73a 3730 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 3731
25dbc73a
AM
3732 linker_section_ptr->offset = lsect->section->size;
3733 lsect->section->size += 4;
7619e7c7 3734
25dbc73a
AM
3735#ifdef DEBUG
3736 fprintf (stderr,
3737 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3738 lsect->name, (long) linker_section_ptr->offset,
3739 (long) lsect->section->size);
3740#endif
7619e7c7
AM
3741
3742 return TRUE;
41fcb14e
AM
3743}
3744
e054468f 3745static struct plt_entry **
25dbc73a
AM
3746update_local_sym_info (bfd *abfd,
3747 Elf_Internal_Shdr *symtab_hdr,
3748 unsigned long r_symndx,
3749 int tls_type)
252b5132 3750{
25dbc73a 3751 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
e054468f 3752 struct plt_entry **local_plt;
25dbc73a 3753 char *local_got_tls_masks;
252b5132 3754
25dbc73a 3755 if (local_got_refcounts == NULL)
252b5132 3756 {
25dbc73a
AM
3757 bfd_size_type size = symtab_hdr->sh_info;
3758
e054468f
AM
3759 size *= (sizeof (*local_got_refcounts)
3760 + sizeof (*local_plt)
3761 + sizeof (*local_got_tls_masks));
25dbc73a
AM
3762 local_got_refcounts = bfd_zalloc (abfd, size);
3763 if (local_got_refcounts == NULL)
e054468f 3764 return NULL;
25dbc73a 3765 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 3766 }
41fcb14e 3767
e054468f
AM
3768 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3769 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
25dbc73a 3770 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
3771 if (tls_type != PLT_IFUNC)
3772 local_got_refcounts[r_symndx] += 1;
3773 return local_plt + r_symndx;
25dbc73a 3774}
41fcb14e 3775
a6aa5195 3776static bfd_boolean
3ec01793 3777update_plt_info (bfd *abfd, struct plt_entry **plist,
a6aa5195
AM
3778 asection *sec, bfd_vma addend)
3779{
3780 struct plt_entry *ent;
3781
32af9f6e
AM
3782 if (addend < 32768)
3783 sec = NULL;
3ec01793 3784 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3785 if (ent->sec == sec && ent->addend == addend)
3786 break;
3787 if (ent == NULL)
3788 {
3789 bfd_size_type amt = sizeof (*ent);
3790 ent = bfd_alloc (abfd, amt);
3791 if (ent == NULL)
3792 return FALSE;
3ec01793 3793 ent->next = *plist;
a6aa5195
AM
3794 ent->sec = sec;
3795 ent->addend = addend;
3796 ent->plt.refcount = 0;
3ec01793 3797 *plist = ent;
a6aa5195
AM
3798 }
3799 ent->plt.refcount += 1;
3800 return TRUE;
3801}
3802
3803static struct plt_entry *
3ec01793 3804find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
a6aa5195
AM
3805{
3806 struct plt_entry *ent;
3807
3808 if (addend < 32768)
3809 sec = NULL;
3ec01793 3810 for (ent = *plist; ent != NULL; ent = ent->next)
a6aa5195
AM
3811 if (ent->sec == sec && ent->addend == addend)
3812 break;
3813 return ent;
3814}
3815
e054468f
AM
3816static bfd_boolean
3817is_branch_reloc (enum elf_ppc_reloc_type r_type)
3818{
3819 return (r_type == R_PPC_PLTREL24
3820 || r_type == R_PPC_LOCAL24PC
3821 || r_type == R_PPC_REL24
3822 || r_type == R_PPC_REL14
3823 || r_type == R_PPC_REL14_BRTAKEN
3824 || r_type == R_PPC_REL14_BRNTAKEN
3825 || r_type == R_PPC_ADDR24
3826 || r_type == R_PPC_ADDR14
3827 || r_type == R_PPC_ADDR14_BRTAKEN
3828 || r_type == R_PPC_ADDR14_BRNTAKEN);
3829}
3830
25dbc73a
AM
3831static void
3832bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3833{
3834 (*_bfd_error_handler)
3835 (_("%B: relocation %s cannot be used when making a shared object"),
3836 abfd,
3837 ppc_elf_howto_table[r_type]->name);
3838 bfd_set_error (bfd_error_bad_value);
252b5132
RH
3839}
3840
25dbc73a
AM
3841/* Look through the relocs for a section during the first phase, and
3842 allocate space in the global offset table or procedure linkage
3843 table. */
252b5132 3844
b34976b6 3845static bfd_boolean
25dbc73a
AM
3846ppc_elf_check_relocs (bfd *abfd,
3847 struct bfd_link_info *info,
3848 asection *sec,
3849 const Elf_Internal_Rela *relocs)
252b5132 3850{
7619e7c7 3851 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM
3852 Elf_Internal_Shdr *symtab_hdr;
3853 struct elf_link_hash_entry **sym_hashes;
3854 const Elf_Internal_Rela *rel;
3855 const Elf_Internal_Rela *rel_end;
a6aa5195 3856 asection *got2, *sreloc;
727fc41e 3857 struct elf_link_hash_entry *tga;
25dbc73a
AM
3858
3859 if (info->relocatable)
3860 return TRUE;
252b5132 3861
c87b5a93
AM
3862 /* Don't do anything special with non-loaded, non-alloced sections.
3863 In particular, any relocs in such sections should not affect GOT
3864 and PLT reference counting (ie. we don't allow them to create GOT
3865 or PLT entries), there's no possibility or desire to optimize TLS
3866 relocs, and there's not much point in propagating relocs to shared
3867 libs that the dynamic linker won't relocate. */
3868 if ((sec->flags & SEC_ALLOC) == 0)
3869 return TRUE;
3870
252b5132 3871#ifdef DEBUG
25dbc73a
AM
3872 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3873 sec, abfd);
252b5132
RH
3874#endif
3875
0c8d6e5c 3876 BFD_ASSERT (is_ppc_elf (abfd));
0ffa91dd 3877
25dbc73a
AM
3878 /* Initialize howto table if not already done. */
3879 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3880 ppc_elf_howto_init ();
3881
7619e7c7 3882 htab = ppc_elf_hash_table (info);
25f23106
AM
3883 if (htab->glink == NULL)
3884 {
3885 if (htab->elf.dynobj == NULL)
3886 htab->elf.dynobj = abfd;
3887 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3888 return FALSE;
3889 }
727fc41e
AM
3890 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3891 FALSE, FALSE, TRUE);
0ffa91dd 3892 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a 3893 sym_hashes = elf_sym_hashes (abfd);
a6aa5195 3894 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
3895 sreloc = NULL;
3896
3897 rel_end = relocs + sec->reloc_count;
3898 for (rel = relocs; rel < rel_end; rel++)
3899 {
3900 unsigned long r_symndx;
3901 enum elf_ppc_reloc_type r_type;
3902 struct elf_link_hash_entry *h;
727fc41e 3903 int tls_type;
25dbc73a
AM
3904
3905 r_symndx = ELF32_R_SYM (rel->r_info);
3906 if (r_symndx < symtab_hdr->sh_info)
3907 h = NULL;
3908 else
973a3492
L
3909 {
3910 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3911 while (h->root.type == bfd_link_hash_indirect
3912 || h->root.type == bfd_link_hash_warning)
3913 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM
3914
3915 /* PR15323, ref flags aren't set for references in the same
3916 object. */
3917 h->root.non_ir_ref = 1;
973a3492 3918 }
25dbc73a
AM
3919
3920 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3921 This shows up in particular in an R_PPC_ADDR32 in the eabi
3922 startup code. */
3b36f7e6
AM
3923 if (h != NULL
3924 && htab->got == NULL
3925 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 3926 {
3b36f7e6
AM
3927 if (htab->elf.dynobj == NULL)
3928 htab->elf.dynobj = abfd;
3929 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3930 return FALSE;
3931 BFD_ASSERT (h == htab->elf.hgot);
25dbc73a 3932 }
252b5132 3933
727fc41e 3934 tls_type = 0;
de972ffa 3935 r_type = ELF32_R_TYPE (rel->r_info);
06a162cf 3936 if (h == NULL && !htab->is_vxworks)
e054468f 3937 {
06a162cf
AM
3938 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3939 abfd, r_symndx);
3940 if (isym == NULL)
3941 return FALSE;
3942
0bed072f 3943 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
e054468f 3944 {
06a162cf 3945 struct plt_entry **ifunc;
06a162cf 3946
0bed072f 3947 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
06a162cf
AM
3948 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3949 PLT_IFUNC);
3950 if (ifunc == NULL)
e054468f
AM
3951 return FALSE;
3952
06a162cf
AM
3953 /* STT_GNU_IFUNC symbols must have a PLT entry;
3954 In a non-pie executable even when there are
3955 no plt calls. */
0bed072f
AM
3956 if (!info->shared
3957 || is_branch_reloc (r_type))
e054468f 3958 {
0bed072f
AM
3959 bfd_vma addend = 0;
3960 if (r_type == R_PPC_PLTREL24)
3961 {
3962 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3963 if (info->shared)
3964 addend = rel->r_addend;
3965 }
3966 if (!update_plt_info (abfd, ifunc, got2, addend))
3967 return FALSE;
e054468f
AM
3968 }
3969 }
25f23106
AM
3970 }
3971
de972ffa
AM
3972 if (!htab->is_vxworks
3973 && is_branch_reloc (r_type)
3974 && h != NULL
3975 && h == tga)
25f23106 3976 {
de972ffa
AM
3977 if (rel != relocs
3978 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3979 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3980 /* We have a new-style __tls_get_addr call with a marker
3981 reloc. */
3982 ;
3983 else
3984 /* Mark this section as having an old-style call. */
3985 sec->has_tls_get_addr_call = 1;
e054468f 3986 }
727fc41e 3987
25dbc73a
AM
3988 switch (r_type)
3989 {
727fc41e
AM
3990 case R_PPC_TLSGD:
3991 case R_PPC_TLSLD:
3992 /* These special tls relocs tie a call to __tls_get_addr with
3993 its parameter symbol. */
3994 break;
3995
25dbc73a
AM
3996 case R_PPC_GOT_TLSLD16:
3997 case R_PPC_GOT_TLSLD16_LO:
3998 case R_PPC_GOT_TLSLD16_HI:
3999 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4000 tls_type = TLS_TLS | TLS_LD;
4001 goto dogottls;
252b5132 4002
25dbc73a
AM
4003 case R_PPC_GOT_TLSGD16:
4004 case R_PPC_GOT_TLSGD16_LO:
4005 case R_PPC_GOT_TLSGD16_HI:
4006 case R_PPC_GOT_TLSGD16_HA:
4007 tls_type = TLS_TLS | TLS_GD;
4008 goto dogottls;
4009
4010 case R_PPC_GOT_TPREL16:
4011 case R_PPC_GOT_TPREL16_LO:
4012 case R_PPC_GOT_TPREL16_HI:
4013 case R_PPC_GOT_TPREL16_HA:
1d483afe 4014 if (!info->executable)
25dbc73a
AM
4015 info->flags |= DF_STATIC_TLS;
4016 tls_type = TLS_TLS | TLS_TPREL;
4017 goto dogottls;
4018
4019 case R_PPC_GOT_DTPREL16:
4020 case R_PPC_GOT_DTPREL16_LO:
4021 case R_PPC_GOT_DTPREL16_HI:
4022 case R_PPC_GOT_DTPREL16_HA:
4023 tls_type = TLS_TLS | TLS_DTPREL;
4024 dogottls:
4025 sec->has_tls_reloc = 1;
4026 /* Fall thru */
252b5132 4027
25dbc73a
AM
4028 /* GOT16 relocations */
4029 case R_PPC_GOT16:
4030 case R_PPC_GOT16_LO:
4031 case R_PPC_GOT16_HI:
4032 case R_PPC_GOT16_HA:
4033 /* This symbol requires a global offset table entry. */
4034 if (htab->got == NULL)
4035 {
4036 if (htab->elf.dynobj == NULL)
4037 htab->elf.dynobj = abfd;
4038 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4039 return FALSE;
4040 }
4041 if (h != NULL)
4042 {
4043 h->got.refcount += 1;
4044 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4045 }
4046 else
4047 /* This is a global offset table entry for a local symbol. */
4048 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4049 return FALSE;
91e21fb7
AM
4050
4051 /* We may also need a plt entry if the symbol turns out to be
4052 an ifunc. */
4053 if (h != NULL && !info->shared)
4054 {
4055 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4056 return FALSE;
4057 }
25dbc73a 4058 break;
252b5132 4059
25dbc73a
AM
4060 /* Indirect .sdata relocation. */
4061 case R_PPC_EMB_SDAI16:
4062 if (info->shared)
4063 {
4064 bad_shared_reloc (abfd, r_type);
4065 return FALSE;
4066 }
c9a2f333
AM
4067 if (htab->sdata[0].section == NULL
4068 && !ppc_elf_create_linker_section (abfd, info, 0,
4069 &htab->sdata[0]))
4070 return FALSE;
76750a2f
AM
4071 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
4072 h, rel))
25dbc73a 4073 return FALSE;
046183de
AM
4074 if (h != NULL)
4075 {
4076 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4077 h->non_got_ref = TRUE;
4078 }
25dbc73a 4079 break;
252b5132 4080
25dbc73a
AM
4081 /* Indirect .sdata2 relocation. */
4082 case R_PPC_EMB_SDA2I16:
4083 if (info->shared)
4084 {
4085 bad_shared_reloc (abfd, r_type);
4086 return FALSE;
4087 }
c9a2f333
AM
4088 if (htab->sdata[1].section == NULL
4089 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
4090 &htab->sdata[1]))
4091 return FALSE;
76750a2f
AM
4092 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
4093 h, rel))
25dbc73a 4094 return FALSE;
046183de
AM
4095 if (h != NULL)
4096 {
4097 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4098 h->non_got_ref = TRUE;
4099 }
25dbc73a 4100 break;
252b5132 4101
b9c361e0
JL
4102 case R_PPC_VLE_SDAREL_LO16A:
4103 case R_PPC_VLE_SDAREL_LO16D:
4104 case R_PPC_VLE_SDAREL_HI16A:
4105 case R_PPC_VLE_SDAREL_HI16D:
4106 case R_PPC_VLE_SDAREL_HA16A:
4107 case R_PPC_VLE_SDAREL_HA16D:
25dbc73a 4108 case R_PPC_SDAREL16:
046183de 4109 if (htab->sdata[0].sym == NULL
bd6c6e2b 4110 && !create_sdata_sym (info, &htab->sdata[0]))
046183de 4111 return FALSE;
b9c361e0
JL
4112
4113 if (htab->sdata[1].sym == NULL
4114 && !create_sdata_sym (info, &htab->sdata[1]))
4115 return FALSE;
4116
046183de
AM
4117 if (h != NULL)
4118 {
4119 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4120 h->non_got_ref = TRUE;
4121 }
4122 break;
4123
b9c361e0
JL
4124 case R_PPC_VLE_REL8:
4125 case R_PPC_VLE_REL15:
4126 case R_PPC_VLE_REL24:
4127 case R_PPC_VLE_LO16A:
4128 case R_PPC_VLE_LO16D:
4129 case R_PPC_VLE_HI16A:
4130 case R_PPC_VLE_HI16D:
4131 case R_PPC_VLE_HA16A:
4132 case R_PPC_VLE_HA16D:
4133 break;
4134
25dbc73a 4135 case R_PPC_EMB_SDA2REL:
046183de
AM
4136 if (info->shared)
4137 {
4138 bad_shared_reloc (abfd, r_type);
4139 return FALSE;
4140 }
4141 if (htab->sdata[1].sym == NULL
bd6c6e2b 4142 && !create_sdata_sym (info, &htab->sdata[1]))
046183de
AM
4143 return FALSE;
4144 if (h != NULL)
4145 {
4146 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4147 h->non_got_ref = TRUE;
4148 }
4149 break;
4150
b9c361e0
JL
4151 case R_PPC_VLE_SDA21_LO:
4152 case R_PPC_VLE_SDA21:
25dbc73a
AM
4153 case R_PPC_EMB_SDA21:
4154 case R_PPC_EMB_RELSDA:
046183de
AM
4155 if (info->shared)
4156 {
4157 bad_shared_reloc (abfd, r_type);
4158 return FALSE;
4159 }
4160 if (htab->sdata[0].sym == NULL
bd6c6e2b 4161 && !create_sdata_sym (info, &htab->sdata[0]))
046183de
AM
4162 return FALSE;
4163 if (htab->sdata[1].sym == NULL
bd6c6e2b 4164 && !create_sdata_sym (info, &htab->sdata[1]))
046183de
AM
4165 return FALSE;
4166 if (h != NULL)
4167 {
4168 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4169 h->non_got_ref = TRUE;
4170 }
4171 break;
4172
25dbc73a
AM
4173 case R_PPC_EMB_NADDR32:
4174 case R_PPC_EMB_NADDR16:
4175 case R_PPC_EMB_NADDR16_LO:
4176 case R_PPC_EMB_NADDR16_HI:
4177 case R_PPC_EMB_NADDR16_HA:
4178 if (info->shared)
4179 {
4180 bad_shared_reloc (abfd, r_type);
4181 return FALSE;
4182 }
4dc4a9a5 4183 if (h != NULL)
046183de 4184 h->non_got_ref = TRUE;
25dbc73a 4185 break;
252b5132 4186
25dbc73a 4187 case R_PPC_PLTREL24:
de972ffa 4188 if (h == NULL)
6d78d0b9
AM
4189 break;
4190 /* Fall through */
4191 case R_PPC_PLT32:
25dbc73a
AM
4192 case R_PPC_PLTREL32:
4193 case R_PPC_PLT16_LO:
4194 case R_PPC_PLT16_HI:
4195 case R_PPC_PLT16_HA:
4196#ifdef DEBUG
4197 fprintf (stderr, "Reloc requires a PLT entry\n");
4198#endif
4199 /* This symbol requires a procedure linkage table entry. We
4200 actually build the entry in finish_dynamic_symbol,
4201 because this might be a case of linking PIC code without
4202 linking in any dynamic objects, in which case we don't
4203 need to generate a procedure linkage table after all. */
7619e7c7 4204
25dbc73a
AM
4205 if (h == NULL)
4206 {
4207 /* It does not make sense to have a procedure linkage
4208 table entry for a local symbol. */
8de848d8 4209 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
25f53a85
AM
4210 abfd, sec, rel->r_offset,
4211 ppc_elf_howto_table[r_type]->name);
25dbc73a
AM
4212 bfd_set_error (bfd_error_bad_value);
4213 return FALSE;
4214 }
a6aa5195
AM
4215 else
4216 {
016687f8 4217 bfd_vma addend = 0;
ee05f2fe 4218
016687f8
AM
4219 if (r_type == R_PPC_PLTREL24)
4220 {
4221 ppc_elf_tdata (abfd)->makes_plt_call = 1;
a877a2b6
AM
4222 if (info->shared)
4223 addend = rel->r_addend;
016687f8 4224 }
a6aa5195 4225 h->needs_plt = 1;
32af9f6e 4226 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
a6aa5195
AM
4227 return FALSE;
4228 }
25dbc73a 4229 break;
ee05f2fe 4230
25dbc73a
AM
4231 /* The following relocations don't need to propagate the
4232 relocation if linking a shared object since they are
4233 section relative. */
4234 case R_PPC_SECTOFF:
4235 case R_PPC_SECTOFF_LO:
4236 case R_PPC_SECTOFF_HI:
4237 case R_PPC_SECTOFF_HA:
4238 case R_PPC_DTPREL16:
4239 case R_PPC_DTPREL16_LO:
4240 case R_PPC_DTPREL16_HI:
4241 case R_PPC_DTPREL16_HA:
4242 case R_PPC_TOC16:
4243 break;
252b5132 4244
d7128ce4
AM
4245 case R_PPC_REL16:
4246 case R_PPC_REL16_LO:
4247 case R_PPC_REL16_HI:
4248 case R_PPC_REL16_HA:
016687f8 4249 ppc_elf_tdata (abfd)->has_rel16 = 1;
d7128ce4
AM
4250 break;
4251
a6aa5195 4252 /* These are just markers. */
25dbc73a
AM
4253 case R_PPC_TLS:
4254 case R_PPC_EMB_MRKREF:
4255 case R_PPC_NONE:
4256 case R_PPC_max:
32af9f6e
AM
4257 case R_PPC_RELAX:
4258 case R_PPC_RELAX_PLT:
4259 case R_PPC_RELAX_PLTREL24:
25dbc73a 4260 break;
252b5132 4261
25dbc73a
AM
4262 /* These should only appear in dynamic objects. */
4263 case R_PPC_COPY:
4264 case R_PPC_GLOB_DAT:
4265 case R_PPC_JMP_SLOT:
4266 case R_PPC_RELATIVE:
e054468f 4267 case R_PPC_IRELATIVE:
25dbc73a 4268 break;
252b5132 4269
25dbc73a
AM
4270 /* These aren't handled yet. We'll report an error later. */
4271 case R_PPC_ADDR30:
4272 case R_PPC_EMB_RELSEC16:
4273 case R_PPC_EMB_RELST_LO:
4274 case R_PPC_EMB_RELST_HI:
4275 case R_PPC_EMB_RELST_HA:
4276 case R_PPC_EMB_BIT_FLD:
4277 break;
252b5132 4278
25dbc73a
AM
4279 /* This refers only to functions defined in the shared library. */
4280 case R_PPC_LOCAL24PC:
727fc41e 4281 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
016687f8
AM
4282 {
4283 htab->plt_type = PLT_OLD;
4284 htab->old_bfd = abfd;
4285 }
25dbc73a 4286 break;
252b5132 4287
25dbc73a
AM
4288 /* This relocation describes the C++ object vtable hierarchy.
4289 Reconstruct it for later use during GC. */
4290 case R_PPC_GNU_VTINHERIT:
4291 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4292 return FALSE;
4293 break;
252b5132 4294
25dbc73a
AM
4295 /* This relocation describes which C++ vtable entries are actually
4296 used. Record for later use during GC. */
4297 case R_PPC_GNU_VTENTRY:
d17e0c6e
JB
4298 BFD_ASSERT (h != NULL);
4299 if (h != NULL
4300 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
25dbc73a
AM
4301 return FALSE;
4302 break;
252b5132 4303
25dbc73a
AM
4304 /* We shouldn't really be seeing these. */
4305 case R_PPC_TPREL32:
1d483afe
AM
4306 case R_PPC_TPREL16:
4307 case R_PPC_TPREL16_LO:
4308 case R_PPC_TPREL16_HI:
4309 case R_PPC_TPREL16_HA:
4310 if (!info->executable)
25dbc73a
AM
4311 info->flags |= DF_STATIC_TLS;
4312 goto dodyn;
252b5132 4313
25dbc73a
AM
4314 /* Nor these. */
4315 case R_PPC_DTPMOD32:
4316 case R_PPC_DTPREL32:
4317 goto dodyn;
252b5132 4318
9edfd1af
AM
4319 case R_PPC_REL32:
4320 if (h == NULL
4321 && got2 != NULL
4322 && (sec->flags & SEC_CODE) != 0
a877a2b6 4323 && info->shared
4a3dc543 4324 && htab->plt_type == PLT_UNSET)
9edfd1af
AM
4325 {
4326 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4327 the start of a function, which assembles to a REL32
4328 reference to .got2. If we detect one of these, then
4329 force the old PLT layout because the linker cannot
4330 reliably deduce the GOT pointer value needed for
4331 PLT call stubs. */
4332 asection *s;
87d72d41 4333 Elf_Internal_Sym *isym;
9edfd1af 4334
87d72d41
AM
4335 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4336 abfd, r_symndx);
4337 if (isym == NULL)
4338 return FALSE;
4339
4340 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
9edfd1af 4341 if (s == got2)
016687f8
AM
4342 {
4343 htab->plt_type = PLT_OLD;
4344 htab->old_bfd = abfd;
4345 }
9edfd1af 4346 }
7123df0e 4347 if (h == NULL || h == htab->elf.hgot)
fd38b44c 4348 break;
625af618
AM
4349 /* fall through */
4350
4351 case R_PPC_ADDR32:
4352 case R_PPC_ADDR16:
4353 case R_PPC_ADDR16_LO:
4354 case R_PPC_ADDR16_HI:
4355 case R_PPC_ADDR16_HA:
4356 case R_PPC_UADDR32:
4357 case R_PPC_UADDR16:
4358 if (h != NULL && !info->shared)
4359 {
4360 /* We may need a plt entry if the symbol turns out to be
4361 a function defined in a dynamic object. */
3ec01793 4362 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
625af618
AM
4363 return FALSE;
4364
4365 /* We may need a copy reloc too. */
4366 h->non_got_ref = 1;
4367 h->pointer_equality_needed = 1;
4368 }
4369 goto dodyn;
9edfd1af 4370
25dbc73a
AM
4371 case R_PPC_REL24:
4372 case R_PPC_REL14:
4373 case R_PPC_REL14_BRTAKEN:
4374 case R_PPC_REL14_BRNTAKEN:
d7128ce4 4375 if (h == NULL)
25dbc73a 4376 break;
7123df0e 4377 if (h == htab->elf.hgot)
d7128ce4 4378 {
7123df0e 4379 if (htab->plt_type == PLT_UNSET)
016687f8
AM
4380 {
4381 htab->plt_type = PLT_OLD;
4382 htab->old_bfd = abfd;
4383 }
d7128ce4
AM
4384 break;
4385 }
25dbc73a 4386 /* fall through */
ee05f2fe 4387
25dbc73a 4388 case R_PPC_ADDR24:
25dbc73a
AM
4389 case R_PPC_ADDR14:
4390 case R_PPC_ADDR14_BRTAKEN:
4391 case R_PPC_ADDR14_BRNTAKEN:
25dbc73a
AM
4392 if (h != NULL && !info->shared)
4393 {
4394 /* We may need a plt entry if the symbol turns out to be
4395 a function defined in a dynamic object. */
e054468f 4396 h->needs_plt = 1;
de972ffa 4397 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
a6aa5195 4398 return FALSE;
625af618 4399 break;
25dbc73a 4400 }
7619e7c7 4401
25dbc73a
AM
4402 dodyn:
4403 /* If we are creating a shared library, and this is a reloc
4404 against a global symbol, or a non PC relative reloc
4405 against a local symbol, then we need to copy the reloc
4406 into the shared library. However, if we are linking with
4407 -Bsymbolic, we do not need to copy a reloc against a
4408 global symbol which is defined in an object we are
4409 including in the link (i.e., DEF_REGULAR is set). At
4410 this point we have not seen all the input files, so it is
4411 possible that DEF_REGULAR is not set now but will be set
4412 later (it is never cleared). In case of a weak definition,
4413 DEF_REGULAR may be cleared later by a strong definition in
4414 a shared library. We account for that possibility below by
4415 storing information in the dyn_relocs field of the hash
4416 table entry. A similar situation occurs when creating
4417 shared libraries and symbol visibility changes render the
4418 symbol local.
7619e7c7 4419
25dbc73a
AM
4420 If on the other hand, we are creating an executable, we
4421 may need to keep relocations for symbols satisfied by a
4422 dynamic library if we manage to avoid copy relocs for the
4423 symbol. */
4424 if ((info->shared
1d483afe 4425 && (must_be_dyn_reloc (info, r_type)
25dbc73a 4426 || (h != NULL
198f1157 4427 && (!SYMBOLIC_BIND (info, h)
25dbc73a
AM
4428 || h->root.type == bfd_link_hash_defweak
4429 || !h->def_regular))))
4430 || (ELIMINATE_COPY_RELOCS
4431 && !info->shared
25dbc73a
AM
4432 && h != NULL
4433 && (h->root.type == bfd_link_hash_defweak
de972ffa 4434 || !h->def_regular)))
25dbc73a 4435 {
25dbc73a
AM
4436#ifdef DEBUG
4437 fprintf (stderr,
4438 "ppc_elf_check_relocs needs to "
4439 "create relocation for %s\n",
4440 (h && h->root.root.string
4441 ? h->root.root.string : "<unknown>"));
4442#endif
4443 if (sreloc == NULL)
4444 {
c9a2f333
AM
4445 if (htab->elf.dynobj == NULL)
4446 htab->elf.dynobj = abfd;
83bac4b0
NC
4447
4448 sreloc = _bfd_elf_make_dynamic_reloc_section
4449 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4450
25dbc73a 4451 if (sreloc == NULL)
83bac4b0 4452 return FALSE;
25dbc73a 4453 }
7619e7c7 4454
25dbc73a
AM
4455 /* If this is a global symbol, we count the number of
4456 relocations we need for this symbol. */
4457 if (h != NULL)
4458 {
f95f8542
AM
4459 struct elf_dyn_relocs *p;
4460 struct elf_dyn_relocs **rel_head;
4461
91d6fa6a 4462 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
f95f8542
AM
4463 p = *rel_head;
4464 if (p == NULL || p->sec != sec)
4465 {
4466 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4467 if (p == NULL)
4468 return FALSE;
4469 p->next = *rel_head;
4470 *rel_head = p;
4471 p->sec = sec;
4472 p->count = 0;
4473 p->pc_count = 0;
4474 }
4475 p->count += 1;
4476 if (!must_be_dyn_reloc (info, r_type))
4477 p->pc_count += 1;
25dbc73a
AM
4478 }
4479 else
4480 {
4481 /* Track dynamic relocs needed for local syms too.
4482 We really need local syms available to do this
4483 easily. Oh well. */
f95f8542
AM
4484 struct ppc_dyn_relocs *p;
4485 struct ppc_dyn_relocs **rel_head;
4486 bfd_boolean is_ifunc;
25dbc73a 4487 asection *s;
6edfbbad 4488 void *vpp;
87d72d41 4489 Elf_Internal_Sym *isym;
6edfbbad 4490
87d72d41
AM
4491 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4492 abfd, r_symndx);
4493 if (isym == NULL)
25dbc73a 4494 return FALSE;
7fce784e 4495
87d72d41
AM
4496 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4497 if (s == NULL)
4498 s = sec;
4499
6edfbbad 4500 vpp = &elf_section_data (s)->local_dynrel;
f95f8542
AM
4501 rel_head = (struct ppc_dyn_relocs **) vpp;
4502 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4503 p = *rel_head;
4504 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4505 p = p->next;
4506 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4507 {
4508 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4509 if (p == NULL)
4510 return FALSE;
4511 p->next = *rel_head;
4512 *rel_head = p;
4513 p->sec = sec;
4514 p->ifunc = is_ifunc;
4515 p->count = 0;
4516 }
4517 p->count += 1;
25dbc73a 4518 }
7619e7c7 4519 }
25dbc73a
AM
4520
4521 break;
7619e7c7
AM
4522 }
4523 }
ee05f2fe 4524
25dbc73a
AM
4525 return TRUE;
4526}
4527\f
34c8bcba
JM
4528
4529/* Merge object attributes from IBFD into OBFD. Raise an error if
4530 there are conflicting attributes. */
4531static bfd_boolean
4532ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4533{
c6e65352
DJ
4534 obj_attribute *in_attr, *in_attrs;
4535 obj_attribute *out_attr, *out_attrs;
34c8bcba
JM
4536
4537 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4538 {
4539 /* This is the first object. Copy the attributes. */
4540 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4541
4542 /* Use the Tag_null value to indicate the attributes have been
4543 initialized. */
4544 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4545
4546 return TRUE;
4547 }
4548
c6e65352
DJ
4549 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4550 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4551
34c8bcba
JM
4552 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4553 non-conflicting ones. */
c6e65352
DJ
4554 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4555 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4556 if (in_attr->i != out_attr->i)
34c8bcba 4557 {
c6e65352
DJ
4558 out_attr->type = 1;
4559 if (out_attr->i == 0)
4560 out_attr->i = in_attr->i;
4561 else if (in_attr->i == 0)
34c8bcba 4562 ;
c6e65352 4563 else if (out_attr->i == 1 && in_attr->i == 2)
34c8bcba
JM
4564 _bfd_error_handler
4565 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3c7b9897
AM
4566 else if (out_attr->i == 1 && in_attr->i == 3)
4567 _bfd_error_handler
5b914448 4568 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3c7b9897
AM
4569 obfd, ibfd);
4570 else if (out_attr->i == 3 && in_attr->i == 1)
4571 _bfd_error_handler
5b914448 4572 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3c7b9897
AM
4573 ibfd, obfd);
4574 else if (out_attr->i == 3 && in_attr->i == 2)
4575 _bfd_error_handler
5b914448 4576 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3c7b9897
AM
4577 ibfd, obfd);
4578 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
34c8bcba
JM
4579 _bfd_error_handler
4580 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3c7b9897 4581 else if (in_attr->i > 3)
34c8bcba
JM
4582 _bfd_error_handler
4583 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
c6e65352 4584 in_attr->i);
34c8bcba
JM
4585 else
4586 _bfd_error_handler
4587 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
c6e65352
DJ
4588 out_attr->i);
4589 }
4590
4591 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4592 merge non-conflicting ones. */
4593 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4594 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4595 if (in_attr->i != out_attr->i)
4596 {
4597 const char *in_abi = NULL, *out_abi = NULL;
4598
4599 switch (in_attr->i)
4600 {
4601 case 1: in_abi = "generic"; break;
4602 case 2: in_abi = "AltiVec"; break;
4603 case 3: in_abi = "SPE"; break;
4604 }
4605
4606 switch (out_attr->i)
4607 {
4608 case 1: out_abi = "generic"; break;
4609 case 2: out_abi = "AltiVec"; break;
4610 case 3: out_abi = "SPE"; break;
4611 }
4612
4613 out_attr->type = 1;
4614 if (out_attr->i == 0)
4615 out_attr->i = in_attr->i;
4616 else if (in_attr->i == 0)
4617 ;
4618 /* For now, allow generic to transition to AltiVec or SPE
4619 without a warning. If GCC marked files with their stack
4620 alignment and used don't-care markings for files which are
4621 not affected by the vector ABI, we could warn about this
4622 case too. */
4623 else if (out_attr->i == 1)
4624 out_attr->i = in_attr->i;
4625 else if (in_attr->i == 1)
4626 ;
4627 else if (in_abi == NULL)
4628 _bfd_error_handler
4629 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4630 in_attr->i);
4631 else if (out_abi == NULL)
4632 _bfd_error_handler
4633 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4634 in_attr->i);
4635 else
4636 _bfd_error_handler
4637 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4638 ibfd, obfd, in_abi, out_abi);
34c8bcba
JM
4639 }
4640
f82e0623
NF
4641 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4642 and merge non-conflicting ones. */
4643 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4644 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4645 if (in_attr->i != out_attr->i)
4646 {
4647 out_attr->type = 1;
4648 if (out_attr->i == 0)
4649 out_attr->i = in_attr->i;
4650 else if (in_attr->i == 0)
4651 ;
4652 else if (out_attr->i == 1 && in_attr->i == 2)
4653 _bfd_error_handler
4654 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4655 else if (out_attr->i == 2 && in_attr->i == 1)
4656 _bfd_error_handler
4657 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4658 else if (in_attr->i > 2)
4659 _bfd_error_handler
4660 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4661 in_attr->i);
4662 else
4663 _bfd_error_handler
4664 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4665 out_attr->i);
4666 }
4667
34c8bcba
JM
4668 /* Merge Tag_compatibility attributes and any common GNU ones. */
4669 _bfd_elf_merge_object_attributes (ibfd, obfd);
4670
4671 return TRUE;
4672}
4673
8853c3d3
AM
4674/* Merge backend specific data from an object file to the output
4675 object file when linking. */
4676
4677static bfd_boolean
4678ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4679{
4680 flagword old_flags;
4681 flagword new_flags;
4682 bfd_boolean error;
4683
0c8d6e5c 4684 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
8853c3d3
AM
4685 return TRUE;
4686
cc643b88 4687 /* Check if we have the same endianness. */
8853c3d3
AM
4688 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4689 return FALSE;
4690
34c8bcba
JM
4691 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4692 return FALSE;
4693
8853c3d3
AM
4694 new_flags = elf_elfheader (ibfd)->e_flags;
4695 old_flags = elf_elfheader (obfd)->e_flags;
4696 if (!elf_flags_init (obfd))
4697 {
4698 /* First call, no flags set. */
4699 elf_flags_init (obfd) = TRUE;
4700 elf_elfheader (obfd)->e_flags = new_flags;
4701 }
4702
4703 /* Compatible flags are ok. */
4704 else if (new_flags == old_flags)
4705 ;
4706
4707 /* Incompatible flags. */
4708 else
4709 {
4710 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4711 to be linked with either. */
4712 error = FALSE;
4713 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4714 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4715 {
4716 error = TRUE;
4717 (*_bfd_error_handler)
4718 (_("%B: compiled with -mrelocatable and linked with "
4719 "modules compiled normally"), ibfd);
4720 }
4721 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4722 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4723 {
4724 error = TRUE;
4725 (*_bfd_error_handler)
4726 (_("%B: compiled normally and linked with "
4727 "modules compiled with -mrelocatable"), ibfd);
4728 }
4729
4730 /* The output is -mrelocatable-lib iff both the input files are. */
4731 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4732 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4733
4734 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4735 but each input file is either -mrelocatable or -mrelocatable-lib. */
4736 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4737 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4738 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4739 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4740
4741 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4742 any module uses it. */
4743 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4744
4745 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4746 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4747
4748 /* Warn about any other mismatches. */
4749 if (new_flags != old_flags)
4750 {
4751 error = TRUE;
4752 (*_bfd_error_handler)
4753 (_("%B: uses different e_flags (0x%lx) fields "
4754 "than previous modules (0x%lx)"),
4755 ibfd, (long) new_flags, (long) old_flags);
4756 }
4757
4758 if (error)
4759 {
4760 bfd_set_error (bfd_error_bad_value);
4761 return FALSE;
4762 }
4763 }
4764
4765 return TRUE;
4766}
b9c361e0
JL
4767
4768static void
4769ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *contents,
4770 bfd_vma offset, bfd_vma relocation,
4771 split16_format_type split16_format)
4772
4773{
4774 bfd_vma insn, top5, bottom11;
4775
4776 insn = bfd_get_32 (output_bfd, contents + offset);
4777 top5 = relocation >> 11;
4778 top5 = top5 << (split16_format == split16a_type ? 20 : 16);
4779 bottom11 = relocation & 0x7ff;
4780 insn |= top5;
4781 insn |= bottom11;
4782 bfd_put_32 (output_bfd, insn, contents + offset);
4783}
4784
8853c3d3 4785\f
d7128ce4
AM
4786/* Choose which PLT scheme to use, and set .plt flags appropriately.
4787 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4788int
4789ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4790 struct bfd_link_info *info,
016687f8 4791 enum ppc_elf_plt_type plt_style,
0ba07910 4792 int emit_stub_syms)
d7128ce4
AM
4793{
4794 struct ppc_elf_link_hash_table *htab;
9d8504b1 4795 flagword flags;
d7128ce4
AM
4796
4797 htab = ppc_elf_hash_table (info);
4a3dc543 4798
a7f2871e
AM
4799 htab->emit_stub_syms = emit_stub_syms;
4800
4a3dc543 4801 if (htab->plt_type == PLT_UNSET)
016687f8 4802 {
b3874e1a
AM
4803 struct elf_link_hash_entry *h;
4804
016687f8
AM
4805 if (plt_style == PLT_OLD)
4806 htab->plt_type = PLT_OLD;
b3874e1a
AM
4807 else if (info->shared
4808 && htab->elf.dynamic_sections_created
4809 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4810 FALSE, FALSE, TRUE)) != NULL
4811 && (h->type == STT_FUNC
4812 || h->needs_plt)
4813 && h->ref_regular
4814 && !(SYMBOL_CALLS_LOCAL (info, h)
4815 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4816 && h->root.type == bfd_link_hash_undefweak)))
4817 {
4818 /* Profiling of shared libs (and pies) is not supported with
4819 secure plt, because ppc32 does profiling before a
4820 function prologue and a secure plt pic call stubs needs
4821 r30 to be set up. */
4822 htab->plt_type = PLT_OLD;
4823 }
016687f8
AM
4824 else
4825 {
4826 bfd *ibfd;
4827 enum ppc_elf_plt_type plt_type = plt_style;
4828
4829 /* Look through the reloc flags left by ppc_elf_check_relocs.
4830 Use the old style bss plt if a file makes plt calls
4831 without using the new relocs, and if ld isn't given
4832 --secure-plt and we never see REL16 relocs. */
4833 if (plt_type == PLT_UNSET)
4834 plt_type = PLT_OLD;
60b31e8d 4835 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
0c8d6e5c 4836 if (is_ppc_elf (ibfd))
016687f8
AM
4837 {
4838 if (ppc_elf_tdata (ibfd)->has_rel16)
4839 plt_type = PLT_NEW;
4840 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4841 {
4842 plt_type = PLT_OLD;
4843 htab->old_bfd = ibfd;
4844 break;
4845 }
4846 }
4847 htab->plt_type = plt_type;
4848 }
4849 }
4850 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
b3874e1a
AM
4851 {
4852 if (htab->old_bfd != NULL)
4853 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4854 htab->old_bfd);
4855 else
4856 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4857 }
d7128ce4 4858
4a3dc543 4859 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
9d8504b1 4860
4a3dc543 4861 if (htab->plt_type == PLT_NEW)
9d8504b1
PB
4862 {
4863 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4864 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
86b9da88
AM
4865
4866 /* The new PLT is a loaded section. */
4867 if (htab->plt != NULL
4868 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4869 return -1;
4870
4871 /* The new GOT is not executable. */
4872 if (htab->got != NULL
4873 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4874 return -1;
d7128ce4
AM
4875 }
4876 else
4877 {
4878 /* Stop an unused .glink section from affecting .text alignment. */
86b9da88
AM
4879 if (htab->glink != NULL
4880 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4881 return -1;
d7128ce4 4882 }
4a3dc543 4883 return htab->plt_type == PLT_NEW;
d7128ce4
AM
4884}
4885\f
25dbc73a
AM
4886/* Return the section that should be marked against GC for a given
4887 relocation. */
586119b3 4888
25dbc73a
AM
4889static asection *
4890ppc_elf_gc_mark_hook (asection *sec,
07adf181 4891 struct bfd_link_info *info,
25dbc73a
AM
4892 Elf_Internal_Rela *rel,
4893 struct elf_link_hash_entry *h,
4894 Elf_Internal_Sym *sym)
4895{
4896 if (h != NULL)
07adf181
AM
4897 switch (ELF32_R_TYPE (rel->r_info))
4898 {
4899 case R_PPC_GNU_VTINHERIT:
4900 case R_PPC_GNU_VTENTRY:
4901 return NULL;
4902 }
4903
4904 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
25dbc73a 4905}
a876ecf9 4906
25dbc73a
AM
4907/* Update the got, plt and dynamic reloc reference counts for the
4908 section being removed. */
4909
4910static bfd_boolean
4911ppc_elf_gc_sweep_hook (bfd *abfd,
4912 struct bfd_link_info *info,
4913 asection *sec,
4914 const Elf_Internal_Rela *relocs)
4915{
4916 struct ppc_elf_link_hash_table *htab;
4917 Elf_Internal_Shdr *symtab_hdr;
4918 struct elf_link_hash_entry **sym_hashes;
4919 bfd_signed_vma *local_got_refcounts;
4920 const Elf_Internal_Rela *rel, *relend;
a6aa5195 4921 asection *got2;
25dbc73a 4922
7dda2462
TG
4923 if (info->relocatable)
4924 return TRUE;
4925
c87b5a93
AM
4926 if ((sec->flags & SEC_ALLOC) == 0)
4927 return TRUE;
4928
25dbc73a
AM
4929 elf_section_data (sec)->local_dynrel = NULL;
4930
4931 htab = ppc_elf_hash_table (info);
0ffa91dd 4932 symtab_hdr = &elf_symtab_hdr (abfd);
25dbc73a
AM
4933 sym_hashes = elf_sym_hashes (abfd);
4934 local_got_refcounts = elf_local_got_refcounts (abfd);
a6aa5195 4935 got2 = bfd_get_section_by_name (abfd, ".got2");
25dbc73a
AM
4936
4937 relend = relocs + sec->reloc_count;
4938 for (rel = relocs; rel < relend; rel++)
4939 {
4940 unsigned long r_symndx;
4941 enum elf_ppc_reloc_type r_type;
4942 struct elf_link_hash_entry *h = NULL;
4943
4944 r_symndx = ELF32_R_SYM (rel->r_info);
4945 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 4946 {
6061a67d 4947 struct elf_dyn_relocs **pp, *p;
25dbc73a
AM
4948 struct ppc_elf_link_hash_entry *eh;
4949
4950 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4951 while (h->root.type == bfd_link_hash_indirect
4952 || h->root.type == bfd_link_hash_warning)
4953 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4954 eh = (struct ppc_elf_link_hash_entry *) h;
4955
4956 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4957 if (p->sec == sec)
4958 {
4959 /* Everything must go for SEC. */
4960 *pp = p->next;
4961 break;
4962 }
a876ecf9 4963 }
ee05f2fe 4964
25dbc73a 4965 r_type = ELF32_R_TYPE (rel->r_info);
de972ffa
AM
4966 if (!htab->is_vxworks
4967 && h == NULL
4968 && local_got_refcounts != NULL
4969 && (!info->shared
4970 || is_branch_reloc (r_type)))
e054468f 4971 {
de972ffa
AM
4972 struct plt_entry **local_plt = (struct plt_entry **)
4973 (local_got_refcounts + symtab_hdr->sh_info);
4974 char *local_got_tls_masks = (char *)
4975 (local_plt + symtab_hdr->sh_info);
4976 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
e054468f 4977 {
de972ffa 4978 struct plt_entry **ifunc = local_plt + r_symndx;
a877a2b6
AM
4979 bfd_vma addend = 0;
4980 struct plt_entry *ent;
4981
4982 if (r_type == R_PPC_PLTREL24 && info->shared)
4983 addend = rel->r_addend;
4984 ent = find_plt_ent (ifunc, got2, addend);
e054468f
AM
4985 if (ent->plt.refcount > 0)
4986 ent->plt.refcount -= 1;
4987 continue;
4988 }
4989 }
4990
25dbc73a 4991 switch (r_type)
ee05f2fe 4992 {
25dbc73a
AM
4993 case R_PPC_GOT_TLSLD16:
4994 case R_PPC_GOT_TLSLD16_LO:
4995 case R_PPC_GOT_TLSLD16_HI:
4996 case R_PPC_GOT_TLSLD16_HA:
25dbc73a
AM
4997 case R_PPC_GOT_TLSGD16:
4998 case R_PPC_GOT_TLSGD16_LO:
4999 case R_PPC_GOT_TLSGD16_HI:
5000 case R_PPC_GOT_TLSGD16_HA:
5001 case R_PPC_GOT_TPREL16:
5002 case R_PPC_GOT_TPREL16_LO:
5003 case R_PPC_GOT_TPREL16_HI:
5004 case R_PPC_GOT_TPREL16_HA:
5005 case R_PPC_GOT_DTPREL16:
5006 case R_PPC_GOT_DTPREL16_LO:
5007 case R_PPC_GOT_DTPREL16_HI:
5008 case R_PPC_GOT_DTPREL16_HA:
5009 case R_PPC_GOT16:
5010 case R_PPC_GOT16_LO:
5011 case R_PPC_GOT16_HI:
5012 case R_PPC_GOT16_HA:
5013 if (h != NULL)
ee05f2fe 5014 {
25dbc73a
AM
5015 if (h->got.refcount > 0)
5016 h->got.refcount--;
91e21fb7
AM
5017 if (!info->shared)
5018 {
5019 struct plt_entry *ent;
5020
5021 ent = find_plt_ent (&h->plt.plist, NULL, 0);
32af9f6e 5022 if (ent != NULL && ent->plt.refcount > 0)
91e21fb7
AM
5023 ent->plt.refcount -= 1;
5024 }
ee05f2fe 5025 }
25dbc73a
AM
5026 else if (local_got_refcounts != NULL)
5027 {
5028 if (local_got_refcounts[r_symndx] > 0)
5029 local_got_refcounts[r_symndx]--;
5030 }
5031 break;
ee05f2fe 5032
25dbc73a
AM
5033 case R_PPC_REL24:
5034 case R_PPC_REL14:
5035 case R_PPC_REL14_BRTAKEN:
5036 case R_PPC_REL14_BRNTAKEN:
5037 case R_PPC_REL32:
3b36f7e6 5038 if (h == NULL || h == htab->elf.hgot)
25dbc73a
AM
5039 break;
5040 /* Fall thru */
ee05f2fe 5041
25dbc73a
AM
5042 case R_PPC_ADDR32:
5043 case R_PPC_ADDR24:
5044 case R_PPC_ADDR16:
5045 case R_PPC_ADDR16_LO:
5046 case R_PPC_ADDR16_HI:
5047 case R_PPC_ADDR16_HA:
5048 case R_PPC_ADDR14:
5049 case R_PPC_ADDR14_BRTAKEN:
5050 case R_PPC_ADDR14_BRNTAKEN:
5051 case R_PPC_UADDR32:
5052 case R_PPC_UADDR16:
87538722
AM
5053 if (info->shared)
5054 break;
5055
25dbc73a
AM
5056 case R_PPC_PLT32:
5057 case R_PPC_PLTREL24:
87538722 5058 case R_PPC_PLTREL32:
25dbc73a
AM
5059 case R_PPC_PLT16_LO:
5060 case R_PPC_PLT16_HI:
5061 case R_PPC_PLT16_HA:
5062 if (h != NULL)
5063 {
a877a2b6
AM
5064 bfd_vma addend = 0;
5065 struct plt_entry *ent;
5066
5067 if (r_type == R_PPC_PLTREL24 && info->shared)
5068 addend = rel->r_addend;
5069 ent = find_plt_ent (&h->plt.plist, got2, addend);
32af9f6e 5070 if (ent != NULL && ent->plt.refcount > 0)
a6aa5195 5071 ent->plt.refcount -= 1;
25dbc73a
AM
5072 }
5073 break;
ee05f2fe 5074
25dbc73a
AM
5075 default:
5076 break;
5077 }
7fce784e 5078 }
7fce784e
AS
5079 return TRUE;
5080}
25dbc73a 5081\f
3a71aa26
AM
5082/* Set plt output section type, htab->tls_get_addr, and call the
5083 generic ELF tls_setup function. */
7fce784e 5084
25dbc73a 5085asection *
a7f2871e
AM
5086ppc_elf_tls_setup (bfd *obfd,
5087 struct bfd_link_info *info,
5088 int no_tls_get_addr_opt)
7fce784e 5089{
25dbc73a 5090 struct ppc_elf_link_hash_table *htab;
7fce784e 5091
25dbc73a 5092 htab = ppc_elf_hash_table (info);
a7f2871e
AM
5093 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5094 FALSE, FALSE, TRUE);
5095 if (!no_tls_get_addr_opt)
5096 {
5097 struct elf_link_hash_entry *opt, *tga;
5098 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5099 FALSE, FALSE, TRUE);
5100 if (opt != NULL
5101 && (opt->root.type == bfd_link_hash_defined
5102 || opt->root.type == bfd_link_hash_defweak))
5103 {
5104 /* If glibc supports an optimized __tls_get_addr call stub,
5105 signalled by the presence of __tls_get_addr_opt, and we'll
5106 be calling __tls_get_addr via a plt call stub, then
5107 make __tls_get_addr point to __tls_get_addr_opt. */
5108 tga = htab->tls_get_addr;
5109 if (htab->elf.dynamic_sections_created
5110 && tga != NULL
5111 && (tga->type == STT_FUNC
5112 || tga->needs_plt)
5113 && !(SYMBOL_CALLS_LOCAL (info, tga)
5114 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5115 && tga->root.type == bfd_link_hash_undefweak)))
5116 {
5117 struct plt_entry *ent;
32af9f6e
AM
5118 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5119 if (ent->plt.refcount > 0)
5120 break;
5121 if (ent != NULL)
a7f2871e
AM
5122 {
5123 tga->root.type = bfd_link_hash_indirect;
5124 tga->root.u.i.link = &opt->root;
5125 ppc_elf_copy_indirect_symbol (info, opt, tga);
5126 if (opt->dynindx != -1)
5127 {
5128 /* Use __tls_get_addr_opt in dynamic relocations. */
5129 opt->dynindx = -1;
5130 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5131 opt->dynstr_index);
5132 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5133 return FALSE;
5134 }
5135 htab->tls_get_addr = opt;
5136 }
5137 }
5138 }
5139 else
5140 no_tls_get_addr_opt = TRUE;
5141 }
5142 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
4a3dc543 5143 if (htab->plt_type == PLT_NEW
d7128ce4
AM
5144 && htab->plt != NULL
5145 && htab->plt->output_section != NULL)
5146 {
5147 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5148 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5149 }
5150
25dbc73a 5151 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS
5152}
5153
3a71aa26
AM
5154/* Return TRUE iff REL is a branch reloc with a global symbol matching
5155 HASH. */
5156
5157static bfd_boolean
5158branch_reloc_hash_match (const bfd *ibfd,
5159 const Elf_Internal_Rela *rel,
5160 const struct elf_link_hash_entry *hash)
5161{
5162 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5163 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5164 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5165
e054468f 5166 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
3a71aa26
AM
5167 {
5168 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5169 struct elf_link_hash_entry *h;
5170
5171 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5172 while (h->root.type == bfd_link_hash_indirect
5173 || h->root.type == bfd_link_hash_warning)
5174 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5175 if (h == hash)
5176 return TRUE;
5177 }
5178 return FALSE;
5179}
5180
25dbc73a
AM
5181/* Run through all the TLS relocs looking for optimization
5182 opportunities. */
252b5132 5183
25dbc73a
AM
5184bfd_boolean
5185ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5186 struct bfd_link_info *info)
252b5132 5187{
7fce784e 5188 bfd *ibfd;
25dbc73a
AM
5189 asection *sec;
5190 struct ppc_elf_link_hash_table *htab;
b7fcf6f6 5191 int pass;
252b5132 5192
1d483afe 5193 if (info->relocatable || !info->executable)
25dbc73a 5194 return TRUE;
252b5132 5195
7619e7c7 5196 htab = ppc_elf_hash_table (info);
663a1470
AM
5197 if (htab == NULL)
5198 return FALSE;
5199
b7fcf6f6
AM
5200 /* Make two passes through the relocs. First time check that tls
5201 relocs involved in setting up a tls_get_addr call are indeed
663a1470
AM
5202 followed by such a call. If they are not, don't do any tls
5203 optimization. On the second pass twiddle tls_mask flags to
5204 notify relocate_section that optimization can be done, and
5205 adjust got and plt refcounts. */
b7fcf6f6
AM
5206 for (pass = 0; pass < 2; ++pass)
5207 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5208 {
5209 Elf_Internal_Sym *locsyms = NULL;
0ffa91dd 5210 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
32af9f6e 5211 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
7619e7c7 5212
b7fcf6f6
AM
5213 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5214 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5215 {
5216 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 5217 int expecting_tls_get_addr = 0;
252b5132 5218
b7fcf6f6
AM
5219 /* Read the relocations. */
5220 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5221 info->keep_memory);
5222 if (relstart == NULL)
5223 return FALSE;
7619e7c7 5224
b7fcf6f6
AM
5225 relend = relstart + sec->reloc_count;
5226 for (rel = relstart; rel < relend; rel++)
5227 {
5228 enum elf_ppc_reloc_type r_type;
5229 unsigned long r_symndx;
5230 struct elf_link_hash_entry *h = NULL;
5231 char *tls_mask;
5232 char tls_set, tls_clear;
5233 bfd_boolean is_local;
b7fcf6f6
AM
5234 bfd_signed_vma *got_count;
5235
5236 r_symndx = ELF32_R_SYM (rel->r_info);
5237 if (r_symndx >= symtab_hdr->sh_info)
5238 {
5239 struct elf_link_hash_entry **sym_hashes;
7fce784e 5240
b7fcf6f6
AM
5241 sym_hashes = elf_sym_hashes (ibfd);
5242 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5243 while (h->root.type == bfd_link_hash_indirect
5244 || h->root.type == bfd_link_hash_warning)
5245 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5246 }
7619e7c7 5247
b7fcf6f6
AM
5248 is_local = FALSE;
5249 if (h == NULL
5250 || !h->def_dynamic)
5251 is_local = TRUE;
7619e7c7 5252
b7fcf6f6 5253 r_type = ELF32_R_TYPE (rel->r_info);
663a1470
AM
5254 /* If this section has old-style __tls_get_addr calls
5255 without marker relocs, then check that each
5256 __tls_get_addr call reloc is preceded by a reloc
5257 that conceivably belongs to the __tls_get_addr arg
5258 setup insn. If we don't find matching arg setup
5259 relocs, don't do any tls optimization. */
5260 if (pass == 0
5261 && sec->has_tls_get_addr_call
5262 && h != NULL
5263 && h == htab->tls_get_addr
5264 && !expecting_tls_get_addr
5265 && is_branch_reloc (r_type))
5266 {
25f53a85 5267 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
663a1470
AM
5268 "TLS optimization disabled\n",
5269 ibfd, sec, rel->r_offset);
5270 if (elf_section_data (sec)->relocs != relstart)
5271 free (relstart);
5272 return TRUE;
5273 }
5274
5275 expecting_tls_get_addr = 0;
b7fcf6f6
AM
5276 switch (r_type)
5277 {
5278 case R_PPC_GOT_TLSLD16:
5279 case R_PPC_GOT_TLSLD16_LO:
5280 expecting_tls_get_addr = 1;
5281 /* Fall thru */
5282
5283 case R_PPC_GOT_TLSLD16_HI:
5284 case R_PPC_GOT_TLSLD16_HA:
5285 /* These relocs should never be against a symbol
5286 defined in a shared lib. Leave them alone if
5287 that turns out to be the case. */
5288 if (!is_local)
5289 continue;
5290
5291 /* LD -> LE */
5292 tls_set = 0;
5293 tls_clear = TLS_LD;
5294 break;
5295
5296 case R_PPC_GOT_TLSGD16:
5297 case R_PPC_GOT_TLSGD16_LO:
5298 expecting_tls_get_addr = 1;
5299 /* Fall thru */
5300
5301 case R_PPC_GOT_TLSGD16_HI:
5302 case R_PPC_GOT_TLSGD16_HA:
5303 if (is_local)
5304 /* GD -> LE */
5305 tls_set = 0;
5306 else
5307 /* GD -> IE */
5308 tls_set = TLS_TLS | TLS_TPRELGD;
5309 tls_clear = TLS_GD;
5310 break;
5311
5312 case R_PPC_GOT_TPREL16:
5313 case R_PPC_GOT_TPREL16_LO:
5314 case R_PPC_GOT_TPREL16_HI:
5315 case R_PPC_GOT_TPREL16_HA:
5316 if (is_local)
5317 {
5318 /* IE -> LE */
5319 tls_set = 0;
5320 tls_clear = TLS_TPREL;
5321 break;
5322 }
5323 else
5324 continue;
5325
32af9f6e
AM
5326 case R_PPC_TLSGD:
5327 case R_PPC_TLSLD:
5328 expecting_tls_get_addr = 2;
5329 tls_set = 0;
5330 tls_clear = 0;
5331 break;
5332
b7fcf6f6 5333 default:
25dbc73a 5334 continue;
b7fcf6f6 5335 }
25dbc73a 5336
b7fcf6f6
AM
5337 if (pass == 0)
5338 {
727fc41e 5339 if (!expecting_tls_get_addr
32af9f6e
AM
5340 || (expecting_tls_get_addr == 1
5341 && !sec->has_tls_get_addr_call))
b7fcf6f6 5342 continue;
25dbc73a 5343
3a71aa26
AM
5344 if (rel + 1 < relend
5345 && branch_reloc_hash_match (ibfd, rel + 1,
5346 htab->tls_get_addr))
5347 continue;
25dbc73a 5348
b7fcf6f6
AM
5349 /* Uh oh, we didn't find the expected call. We
5350 could just mark this symbol to exclude it
5351 from tls optimization but it's safer to skip
663a1470 5352 the entire optimization. */
25f53a85 5353 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM
5354 "TLS optimization disabled\n"),
5355 ibfd, sec, rel->r_offset);
5356 if (elf_section_data (sec)->relocs != relstart)
5357 free (relstart);
5358 return TRUE;
b7fcf6f6 5359 }
25dbc73a 5360
32af9f6e
AM
5361 if (expecting_tls_get_addr)
5362 {
5363 struct plt_entry *ent;
5364 bfd_vma addend = 0;
5365
5366 if (info->shared
5367 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5368 addend = rel[1].r_addend;
5369 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5370 got2, addend);
5371 if (ent != NULL && ent->plt.refcount > 0)
5372 ent->plt.refcount -= 1;
5373
5374 if (expecting_tls_get_addr == 2)
5375 continue;
5376 }
5377
b7fcf6f6
AM
5378 if (h != NULL)
5379 {
5380 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5381 got_count = &h->got.refcount;
5382 }
5383 else
5384 {
b7fcf6f6 5385 bfd_signed_vma *lgot_refs;
e054468f 5386 struct plt_entry **local_plt;
b7fcf6f6 5387 char *lgot_masks;
25dbc73a 5388
b7fcf6f6
AM
5389 if (locsyms == NULL)
5390 {
5391 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5392 if (locsyms == NULL)
5393 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5394 symtab_hdr->sh_info,
5395 0, NULL, NULL, NULL);
5396 if (locsyms == NULL)
5397 {
5398 if (elf_section_data (sec)->relocs != relstart)
5399 free (relstart);
5400 return FALSE;
5401 }
5402 }
b7fcf6f6
AM
5403 lgot_refs = elf_local_got_refcounts (ibfd);
5404 if (lgot_refs == NULL)
5405 abort ();
e054468f
AM
5406 local_plt = (struct plt_entry **)
5407 (lgot_refs + symtab_hdr->sh_info);
5408 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
b7fcf6f6
AM
5409 tls_mask = &lgot_masks[r_symndx];
5410 got_count = &lgot_refs[r_symndx];
5411 }
25dbc73a 5412
b7fcf6f6
AM
5413 if (tls_set == 0)
5414 {
5415 /* We managed to get rid of a got entry. */
5416 if (*got_count > 0)
5417 *got_count -= 1;
5418 }
25dbc73a 5419
b7fcf6f6
AM
5420 *tls_mask |= tls_set;
5421 *tls_mask &= ~tls_clear;
5422 }
25dbc73a 5423
b7fcf6f6
AM
5424 if (elf_section_data (sec)->relocs != relstart)
5425 free (relstart);
5426 }
5427
5428 if (locsyms != NULL
5429 && (symtab_hdr->contents != (unsigned char *) locsyms))
5430 {
5431 if (!info->keep_memory)
5432 free (locsyms);
5433 else
5434 symtab_hdr->contents = (unsigned char *) locsyms;
5435 }
5436 }
25dbc73a
AM
5437 return TRUE;
5438}
5439\f
625af618
AM
5440/* Return true if we have dynamic relocs that apply to read-only sections. */
5441
5442static bfd_boolean
5443readonly_dynrelocs (struct elf_link_hash_entry *h)
5444{
6061a67d 5445 struct elf_dyn_relocs *p;
625af618
AM
5446
5447 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5448 {
5449 asection *s = p->sec->output_section;
5450
5451 if (s != NULL
5452 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5453 == (SEC_READONLY | SEC_ALLOC)))
5454 return TRUE;
5455 }
5456 return FALSE;
5457}
5458
25dbc73a
AM
5459/* Adjust a symbol defined by a dynamic object and referenced by a
5460 regular object. The current definition is in some section of the
5461 dynamic object, but we're not including those sections. We have to
5462 change the definition to something the rest of the link can
5463 understand. */
7fce784e 5464
25dbc73a
AM
5465static bfd_boolean
5466ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5467 struct elf_link_hash_entry *h)
5468{
5469 struct ppc_elf_link_hash_table *htab;
5470 asection *s;
7fce784e 5471
25dbc73a
AM
5472#ifdef DEBUG
5473 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5474 h->root.root.string);
5475#endif
252b5132 5476
25dbc73a
AM
5477 /* Make sure we know what is going on here. */
5478 htab = ppc_elf_hash_table (info);
5479 BFD_ASSERT (htab->elf.dynobj != NULL
5480 && (h->needs_plt
91e21fb7 5481 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5482 || h->u.weakdef != NULL
5483 || (h->def_dynamic
5484 && h->ref_regular
5485 && !h->def_regular)));
252b5132 5486
25dbc73a
AM
5487 /* Deal with function syms. */
5488 if (h->type == STT_FUNC
e054468f 5489 || h->type == STT_GNU_IFUNC
25dbc73a
AM
5490 || h->needs_plt)
5491 {
5492 /* Clear procedure linkage table information for any symbol that
5493 won't need a .plt entry. */
a6aa5195
AM
5494 struct plt_entry *ent;
5495 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5496 if (ent->plt.refcount > 0)
5497 break;
5498 if (ent == NULL
e054468f
AM
5499 || (h->type != STT_GNU_IFUNC
5500 && (SYMBOL_CALLS_LOCAL (info, h)
5501 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5502 && h->root.type == bfd_link_hash_undefweak))))
252b5132 5503 {
25dbc73a 5504 /* A PLT entry is not required/allowed when:
252b5132 5505
25dbc73a
AM
5506 1. We are not using ld.so; because then the PLT entry
5507 can't be set up, so we can't use one. In this case,
5508 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 5509
25dbc73a
AM
5510 2. GC has rendered the entry unused.
5511
5512 3. We know for certain that a call to this symbol
5513 will go to this object, or will remain undefined. */
a6aa5195 5514 h->plt.plist = NULL;
25dbc73a
AM
5515 h->needs_plt = 0;
5516 }
625af618
AM
5517 else
5518 {
25f23106
AM
5519 /* After adjust_dynamic_symbol, non_got_ref set in the
5520 non-shared case means that we have allocated space in
5521 .dynbss for the symbol and thus dyn_relocs for this
5522 symbol should be discarded.
625af618
AM
5523 If we get here we know we are making a PLT entry for this
5524 symbol, and in an executable we'd normally resolve
5525 relocations against this symbol to the PLT entry. Allow
5526 dynamic relocs if the reference is weak, and the dynamic
5527 relocs will not cause text relocation. */
5528 if (!h->ref_regular_nonweak
5529 && h->non_got_ref
25f23106 5530 && h->type != STT_GNU_IFUNC
625af618
AM
5531 && !htab->is_vxworks
5532 && !ppc_elf_hash_entry (h)->has_sda_refs
5533 && !readonly_dynrelocs (h))
5534 h->non_got_ref = 0;
5535 }
25dbc73a 5536 return TRUE;
252b5132 5537 }
25dbc73a 5538 else
a6aa5195 5539 h->plt.plist = NULL;
252b5132 5540
25dbc73a
AM
5541 /* If this is a weak symbol, and there is a real definition, the
5542 processor independent code will have arranged for us to see the
5543 real definition first, and we can just use the same value. */
5544 if (h->u.weakdef != NULL)
252b5132 5545 {
25dbc73a
AM
5546 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5547 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5548 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5549 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5550 if (ELIMINATE_COPY_RELOCS)
5551 h->non_got_ref = h->u.weakdef->non_got_ref;
5552 return TRUE;
5553 }
dc810e39 5554
25dbc73a
AM
5555 /* This is a reference to a symbol defined by a dynamic object which
5556 is not a function. */
252b5132 5557
25dbc73a
AM
5558 /* If we are creating a shared library, we must presume that the
5559 only references to the symbol are via the global offset table.
5560 For such cases we need not do anything here; the relocations will
5561 be handled correctly by relocate_section. */
5562 if (info->shared)
5563 return TRUE;
252b5132 5564
25dbc73a
AM
5565 /* If there are no references to this symbol that do not use the
5566 GOT, we don't need to generate a copy reloc. */
5567 if (!h->non_got_ref)
5568 return TRUE;
5569
cfd2c773
NS
5570 /* If we didn't find any dynamic relocs in read-only sections, then
5571 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5572 We can't do this if there are any small data relocations. This
5573 doesn't work on VxWorks, where we can not have dynamic
5574 relocations (other than copy and jump slot relocations) in an
5575 executable. */
4dc4a9a5 5576 if (ELIMINATE_COPY_RELOCS
cfd2c773 5577 && !ppc_elf_hash_entry (h)->has_sda_refs
625af618
AM
5578 && !htab->is_vxworks
5579 && !h->def_regular
5580 && !readonly_dynrelocs (h))
25dbc73a 5581 {
625af618
AM
5582 h->non_got_ref = 0;
5583 return TRUE;
252b5132
RH
5584 }
5585
25dbc73a
AM
5586 /* We must allocate the symbol in our .dynbss section, which will
5587 become part of the .bss section of the executable. There will be
5588 an entry for this symbol in the .dynsym section. The dynamic
5589 object will contain position independent code, so all references
5590 from the dynamic object to this symbol will go through the global
5591 offset table. The dynamic linker will use the .dynsym entry to
5592 determine the address it must put in the global offset table, so
5593 both the dynamic object and the regular object will refer to the
5594 same memory location for the variable.
5595
4dc4a9a5
DJ
5596 Of course, if the symbol is referenced using SDAREL relocs, we
5597 must instead allocate it in .sbss. */
25dbc73a 5598
4dc4a9a5 5599 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
5600 s = htab->dynsbss;
5601 else
5602 s = htab->dynbss;
5603 BFD_ASSERT (s != NULL);
5604
5605 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5606 copy the initial value out of the dynamic object and into the
5607 runtime process image. We need to remember the offset into the
5608 .rela.bss section we are going to use. */
1d7e9d18 5609 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
25dbc73a
AM
5610 {
5611 asection *srel;
5612
4dc4a9a5 5613 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
5614 srel = htab->relsbss;
5615 else
5616 srel = htab->relbss;
5617 BFD_ASSERT (srel != NULL);
5618 srel->size += sizeof (Elf32_External_Rela);
5619 h->needs_copy = 1;
5620 }
7619e7c7 5621
027297b7 5622 return _bfd_elf_adjust_dynamic_copy (h, s);
25dbc73a
AM
5623}
5624\f
ac39eb42
AM
5625/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5626 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5627 specifying the addend on the plt relocation. For -fpic code, the sym
5628 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5629 xxxxxxxx.got2.plt_pic32.<callee>. */
0ba07910
AM
5630
5631static bfd_boolean
5632add_stub_sym (struct plt_entry *ent,
5633 struct elf_link_hash_entry *h,
ac39eb42 5634 struct bfd_link_info *info)
0ba07910
AM
5635{
5636 struct elf_link_hash_entry *sh;
5637 size_t len1, len2, len3;
5638 char *name;
ac39eb42
AM
5639 const char *stub;
5640 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5641
a877a2b6 5642 if (info->shared)
ac39eb42
AM
5643 stub = ".plt_pic32.";
5644 else
5645 stub = ".plt_call32.";
0ba07910
AM
5646
5647 len1 = strlen (h->root.root.string);
ac39eb42 5648 len2 = strlen (stub);
0ba07910
AM
5649 len3 = 0;
5650 if (ent->sec)
5651 len3 = strlen (ent->sec->name);
ac39eb42 5652 name = bfd_malloc (len1 + len2 + len3 + 9);
0ba07910
AM
5653 if (name == NULL)
5654 return FALSE;
5655 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5656 if (ent->sec)
5657 memcpy (name + 8, ent->sec->name, len3);
ac39eb42
AM
5658 memcpy (name + 8 + len3, stub, len2);
5659 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
0ba07910
AM
5660 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5661 if (sh == NULL)
5662 return FALSE;
5663 if (sh->root.type == bfd_link_hash_new)
5664 {
5665 sh->root.type = bfd_link_hash_defined;
5666 sh->root.u.def.section = htab->glink;
5667 sh->root.u.def.value = ent->glink_offset;
5668 sh->ref_regular = 1;
5669 sh->def_regular = 1;
5670 sh->ref_regular_nonweak = 1;
5671 sh->forced_local = 1;
5672 sh->non_elf = 0;
5673 }
5674 return TRUE;
5675}
5676
3b36f7e6
AM
5677/* Allocate NEED contiguous space in .got, and return the offset.
5678 Handles allocation of the got header when crossing 32k. */
5679
5680static bfd_vma
5681allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5682{
5683 bfd_vma where;
4a3dc543 5684 unsigned int max_before_header;
3b36f7e6 5685
4a3dc543 5686 if (htab->plt_type == PLT_VXWORKS)
9d8504b1
PB
5687 {
5688 where = htab->got->size;
5689 htab->got->size += need;
5690 }
3b36f7e6
AM
5691 else
5692 {
4a3dc543
RS
5693 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5694 if (need <= htab->got_gap)
3b36f7e6 5695 {
4a3dc543
RS
5696 where = max_before_header - htab->got_gap;
5697 htab->got_gap -= need;
5698 }
5699 else
5700 {
5701 if (htab->got->size + need > max_before_header
5702 && htab->got->size <= max_before_header)
5703 {
5704 htab->got_gap = max_before_header - htab->got->size;
5705 htab->got->size = max_before_header + htab->got_header_size;
5706 }
5707 where = htab->got->size;
5708 htab->got->size += need;
3b36f7e6 5709 }
3b36f7e6
AM
5710 }
5711 return where;
5712}
5713
25dbc73a 5714/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 5715
b34976b6 5716static bfd_boolean
25dbc73a 5717allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 5718{
25dbc73a
AM
5719 struct bfd_link_info *info = inf;
5720 struct ppc_elf_link_hash_entry *eh;
7619e7c7 5721 struct ppc_elf_link_hash_table *htab;
6061a67d 5722 struct elf_dyn_relocs *p;
252b5132 5723
25dbc73a 5724 if (h->root.type == bfd_link_hash_indirect)
b34976b6 5725 return TRUE;
252b5132 5726
7619e7c7 5727 htab = ppc_elf_hash_table (info);
e054468f
AM
5728 if (htab->elf.dynamic_sections_created
5729 || h->type == STT_GNU_IFUNC)
252b5132 5730 {
a6aa5195
AM
5731 struct plt_entry *ent;
5732 bfd_boolean doneone = FALSE;
28e99bb6 5733 bfd_vma plt_offset = 0, glink_offset = 0;
e054468f 5734 bfd_boolean dyn;
28e99bb6 5735
a6aa5195
AM
5736 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5737 if (ent->plt.refcount > 0)
5738 {
5739 /* Make sure this symbol is output as a dynamic symbol. */
5740 if (h->dynindx == -1
e054468f
AM
5741 && !h->forced_local
5742 && !h->def_regular
5743 && htab->elf.dynamic_sections_created)
a6aa5195
AM
5744 {
5745 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5746 return FALSE;
5747 }
252b5132 5748
e054468f 5749 dyn = htab->elf.dynamic_sections_created;
a6aa5195 5750 if (info->shared
e054468f
AM
5751 || h->type == STT_GNU_IFUNC
5752 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
a6aa5195
AM
5753 {
5754 asection *s = htab->plt;
25f23106 5755 if (!dyn || h->dynindx == -1)
e054468f 5756 s = htab->iplt;
7619e7c7 5757
25f23106 5758 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
a6aa5195 5759 {
a6aa5195 5760 if (!doneone)
28e99bb6
AM
5761 {
5762 plt_offset = s->size;
5763 s->size += 4;
5764 }
5765 ent->plt.offset = plt_offset;
d7128ce4 5766
a6aa5195 5767 s = htab->glink;
a877a2b6 5768 if (!doneone || info->shared)
28e99bb6
AM
5769 {
5770 glink_offset = s->size;
5771 s->size += GLINK_ENTRY_SIZE;
a7f2871e
AM
5772 if (h == htab->tls_get_addr
5773 && !htab->no_tls_get_addr_opt)
5774 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
28e99bb6
AM
5775 }
5776 if (!doneone
5777 && !info->shared
625af618 5778 && h->def_dynamic
a6aa5195
AM
5779 && !h->def_regular)
5780 {
5781 h->root.u.def.section = s;
28e99bb6 5782 h->root.u.def.value = glink_offset;
a6aa5195 5783 }
28e99bb6 5784 ent->glink_offset = glink_offset;
0ba07910
AM
5785
5786 if (htab->emit_stub_syms
ac39eb42 5787 && !add_stub_sym (ent, h, info))
0ba07910 5788 return FALSE;
a6aa5195
AM
5789 }
5790 else
5791 {
a6aa5195
AM
5792 if (!doneone)
5793 {
28e99bb6
AM
5794 /* If this is the first .plt entry, make room
5795 for the special first entry. */
5796 if (s->size == 0)
9d8504b1 5797 s->size += htab->plt_initial_entry_size;
28e99bb6
AM
5798
5799 /* The PowerPC PLT is actually composed of two
5800 parts, the first part is 2 words (for a load
5801 and a jump), and then there is a remaining
5802 word available at the end. */
9d8504b1
PB
5803 plt_offset = (htab->plt_initial_entry_size
5804 + (htab->plt_slot_size
5805 * ((s->size
5806 - htab->plt_initial_entry_size)
5807 / htab->plt_entry_size)));
28e99bb6
AM
5808
5809 /* If this symbol is not defined in a regular
5810 file, and we are not generating a shared
5b914448 5811 library, then set the symbol to this location
de972ffa
AM
5812 in the .plt. This is to avoid text
5813 relocations, and is required to make
28e99bb6
AM
5814 function pointers compare as equal between
5815 the normal executable and the shared library. */
5816 if (! info->shared
625af618 5817 && h->def_dynamic
28e99bb6
AM
5818 && !h->def_regular)
5819 {
5820 h->root.u.def.section = s;
5821 h->root.u.def.value = plt_offset;
5822 }
5823
9d8504b1
PB
5824 /* Make room for this entry. */
5825 s->size += htab->plt_entry_size;
5826 /* After the 8192nd entry, room for two entries
5827 is allocated. */
4a3dc543 5828 if (htab->plt_type == PLT_OLD
9d8504b1
PB
5829 && (s->size - htab->plt_initial_entry_size)
5830 / htab->plt_entry_size
5831 > PLT_NUM_SINGLE_ENTRIES)
5832 s->size += htab->plt_entry_size;
a6aa5195 5833 }
28e99bb6 5834 ent->plt.offset = plt_offset;
a6aa5195 5835 }
25dbc73a 5836
a6aa5195
AM
5837 /* We also need to make an entry in the .rela.plt section. */
5838 if (!doneone)
5839 {
25f23106
AM
5840 if (!htab->elf.dynamic_sections_created
5841 || h->dynindx == -1)
e054468f
AM
5842 htab->reliplt->size += sizeof (Elf32_External_Rela);
5843 else
9d8504b1 5844 {
e054468f
AM
5845 htab->relplt->size += sizeof (Elf32_External_Rela);
5846
5847 if (htab->plt_type == PLT_VXWORKS)
9d8504b1 5848 {
e054468f
AM
5849 /* Allocate space for the unloaded relocations. */
5850 if (!info->shared
5851 && htab->elf.dynamic_sections_created)
9d8504b1 5852 {
e054468f
AM
5853 if (ent->plt.offset
5854 == (bfd_vma) htab->plt_initial_entry_size)
5855 {
5856 htab->srelplt2->size
5857 += (sizeof (Elf32_External_Rela)
5858 * VXWORKS_PLTRESOLVE_RELOCS);
5859 }
5860
9d8504b1 5861 htab->srelplt2->size
e054468f
AM
5862 += (sizeof (Elf32_External_Rela)
5863 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
9d8504b1
PB
5864 }
5865
e054468f
AM
5866 /* Every PLT entry has an associated GOT entry in
5867 .got.plt. */
5868 htab->sgotplt->size += 4;
9d8504b1 5869 }
9d8504b1 5870 }
a6aa5195
AM
5871 doneone = TRUE;
5872 }
5873 }
5874 else
5875 ent->plt.offset = (bfd_vma) -1;
a6aa5195 5876 }
2ce859a1
AM
5877 else
5878 ent->plt.offset = (bfd_vma) -1;
5879
5880 if (!doneone)
5881 {
5882 h->plt.plist = NULL;
5883 h->needs_plt = 0;
5884 }
25dbc73a
AM
5885 }
5886 else
5887 {
a6aa5195 5888 h->plt.plist = NULL;
25dbc73a
AM
5889 h->needs_plt = 0;
5890 }
5891
5892 eh = (struct ppc_elf_link_hash_entry *) h;
5893 if (eh->elf.got.refcount > 0)
5894 {
d6e14abc
AM
5895 bfd_boolean dyn;
5896 unsigned int need;
5897
25dbc73a
AM
5898 /* Make sure this symbol is output as a dynamic symbol. */
5899 if (eh->elf.dynindx == -1
b099ab9f 5900 && !eh->elf.forced_local
25f23106 5901 && eh->elf.type != STT_GNU_IFUNC
b099ab9f 5902 && htab->elf.dynamic_sections_created)
25dbc73a
AM
5903 {
5904 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 5905 return FALSE;
25dbc73a 5906 }
252b5132 5907
d6e14abc
AM
5908 need = 0;
5909 if ((eh->tls_mask & TLS_TLS) != 0)
25dbc73a 5910 {
d6e14abc 5911 if ((eh->tls_mask & TLS_LD) != 0)
252b5132 5912 {
d6e14abc
AM
5913 if (!eh->elf.def_dynamic)
5914 /* We'll just use htab->tlsld_got.offset. This should
5915 always be the case. It's a little odd if we have
5916 a local dynamic reloc against a non-local symbol. */
5917 htab->tlsld_got.refcount += 1;
5918 else
3b36f7e6 5919 need += 8;
252b5132 5920 }
d6e14abc
AM
5921 if ((eh->tls_mask & TLS_GD) != 0)
5922 need += 8;
5923 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5924 need += 4;
5925 if ((eh->tls_mask & TLS_DTPREL) != 0)
3b36f7e6 5926 need += 4;
d6e14abc
AM
5927 }
5928 else
5929 need += 4;
5930 if (need == 0)
5931 eh->elf.got.offset = (bfd_vma) -1;
5932 else
5933 {
3b36f7e6 5934 eh->elf.got.offset = allocate_got (htab, need);
25dbc73a
AM
5935 dyn = htab->elf.dynamic_sections_created;
5936 if ((info->shared
5937 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5938 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5939 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 5940 {
91e21fb7 5941 asection *rsec = htab->relgot;
0bed072f
AM
5942
5943 if (eh->elf.type == STT_GNU_IFUNC)
5944 rsec = htab->reliplt;
3b36f7e6
AM
5945 /* All the entries we allocated need relocs.
5946 Except LD only needs one. */
d6e14abc
AM
5947 if ((eh->tls_mask & TLS_LD) != 0
5948 && eh->elf.def_dynamic)
3b36f7e6 5949 need -= 4;
25f23106 5950 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
252b5132 5951 }
25dbc73a
AM
5952 }
5953 }
5954 else
5955 eh->elf.got.offset = (bfd_vma) -1;
252b5132 5956
b099ab9f 5957 if (eh->dyn_relocs == NULL
de972ffa 5958 || !htab->elf.dynamic_sections_created)
25dbc73a 5959 return TRUE;
252b5132 5960
25dbc73a
AM
5961 /* In the shared -Bsymbolic case, discard space allocated for
5962 dynamic pc-relative relocs against symbols which turn out to be
5963 defined in regular objects. For the normal shared case, discard
5964 space for relocs that have become local due to symbol visibility
5965 changes. */
5966
5967 if (info->shared)
5968 {
5969 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 5970 or certain REL relocs (see must_be_dyn_reloc) that can be
25dbc73a
AM
5971 generated via assembly. We want calls to protected symbols to
5972 resolve directly to the function rather than going via the plt.
5973 If people want function pointer comparisons to work as expected
5974 then they should avoid writing weird assembly. */
5975 if (SYMBOL_CALLS_LOCAL (info, h))
5976 {
6061a67d 5977 struct elf_dyn_relocs **pp;
25dbc73a
AM
5978
5979 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 5980 {
25dbc73a
AM
5981 p->count -= p->pc_count;
5982 p->pc_count = 0;
5983 if (p->count == 0)
5984 *pp = p->next;
5985 else
5986 pp = &p->next;
252b5132 5987 }
25dbc73a 5988 }
252b5132 5989
3348747a
NS
5990 if (htab->is_vxworks)
5991 {
6061a67d 5992 struct elf_dyn_relocs **pp;
3348747a
NS
5993
5994 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5995 {
5996 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5997 *pp = p->next;
5998 else
5999 pp = &p->next;
6000 }
6001 }
6002
89200bf8
AM
6003 /* Discard relocs on undefined symbols that must be local. */
6004 if (eh->dyn_relocs != NULL
6005 && h->root.type == bfd_link_hash_undefined
6006 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6007 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6008 eh->dyn_relocs = NULL;
6009
25dbc73a
AM
6010 /* Also discard relocs on undefined weak syms with non-default
6011 visibility. */
cab87ef9
AM
6012 if (eh->dyn_relocs != NULL
6013 && h->root.type == bfd_link_hash_undefweak)
25dbc73a 6014 {
dfbb6ac9
AM
6015 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6016 eh->dyn_relocs = NULL;
6017
6018 /* Make sure undefined weak symbols are output as a dynamic
6019 symbol in PIEs. */
6020 else if (h->dynindx == -1
e054468f
AM
6021 && !h->forced_local
6022 && !h->def_regular)
dfbb6ac9
AM
6023 {
6024 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6025 return FALSE;
6026 }
25dbc73a
AM
6027 }
6028 }
6029 else if (ELIMINATE_COPY_RELOCS)
6030 {
6031 /* For the non-shared case, discard space for relocs against
6032 symbols which turn out to need copy relocs or are not
6033 dynamic. */
7619e7c7 6034
25dbc73a 6035 if (!h->non_got_ref
25dbc73a
AM
6036 && !h->def_regular)
6037 {
6038 /* Make sure this symbol is output as a dynamic symbol.
6039 Undefined weak syms won't yet be marked as dynamic. */
6040 if (h->dynindx == -1
25f23106 6041 && !h->forced_local)
25dbc73a
AM
6042 {
6043 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6044 return FALSE;
6045 }
7619e7c7 6046
25dbc73a
AM
6047 /* If that succeeded, we know we'll be keeping all the
6048 relocs. */
6049 if (h->dynindx != -1)
6050 goto keep;
6051 }
252b5132 6052
25dbc73a 6053 eh->dyn_relocs = NULL;
252b5132 6054
25dbc73a
AM
6055 keep: ;
6056 }
252b5132 6057
25dbc73a
AM
6058 /* Finally, allocate space. */
6059 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6060 {
6061 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6062 if (eh->elf.type == STT_GNU_IFUNC)
25f23106 6063 sreloc = htab->reliplt;
25dbc73a
AM
6064 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6065 }
252b5132 6066
25dbc73a
AM
6067 return TRUE;
6068}
7619e7c7 6069
625af618
AM
6070/* Set DF_TEXTREL if we find any dynamic relocs that apply to
6071 read-only sections. */
7619e7c7 6072
25dbc73a 6073static bfd_boolean
625af618 6074maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
25dbc73a 6075{
25dbc73a
AM
6076 if (h->root.type == bfd_link_hash_indirect)
6077 return TRUE;
252b5132 6078
625af618 6079 if (readonly_dynrelocs (h))
25dbc73a 6080 {
625af618 6081 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 6082
625af618
AM
6083 /* Not an error, just cut short the traversal. */
6084 return FALSE;
25dbc73a
AM
6085 }
6086 return TRUE;
6087}
6088
6177242a
AM
6089static const unsigned char glink_eh_frame_cie[] =
6090{
6091 0, 0, 0, 16, /* length. */
6092 0, 0, 0, 0, /* id. */
6093 1, /* CIE version. */
6094 'z', 'R', 0, /* Augmentation string. */
6095 4, /* Code alignment. */
6096 0x7c, /* Data alignment. */
6097 65, /* RA reg. */
6098 1, /* Augmentation size. */
6099 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6100 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6101};
6102
25dbc73a
AM
6103/* Set the sizes of the dynamic sections. */
6104
6105static bfd_boolean
6106ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
6107 struct bfd_link_info *info)
6108{
6109 struct ppc_elf_link_hash_table *htab;
6110 asection *s;
6111 bfd_boolean relocs;
6112 bfd *ibfd;
7fce784e 6113
252b5132 6114#ifdef DEBUG
25dbc73a 6115 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 6116#endif
252b5132 6117
25dbc73a
AM
6118 htab = ppc_elf_hash_table (info);
6119 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 6120
25dbc73a
AM
6121 if (elf_hash_table (info)->dynamic_sections_created)
6122 {
6123 /* Set the contents of the .interp section to the interpreter. */
6124 if (info->executable)
6125 {
3d4d4302 6126 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
25dbc73a
AM
6127 BFD_ASSERT (s != NULL);
6128 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6129 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6130 }
6131 }
252b5132 6132
4a3dc543 6133 if (htab->plt_type == PLT_OLD)
d7128ce4 6134 htab->got_header_size = 16;
4a3dc543 6135 else if (htab->plt_type == PLT_NEW)
d7128ce4 6136 htab->got_header_size = 12;
252b5132 6137
25dbc73a
AM
6138 /* Set up .got offsets for local syms, and space for local dynamic
6139 relocs. */
6140 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6141 {
6142 bfd_signed_vma *local_got;
6143 bfd_signed_vma *end_local_got;
e054468f
AM
6144 struct plt_entry **local_plt;
6145 struct plt_entry **end_local_plt;
25dbc73a
AM
6146 char *lgot_masks;
6147 bfd_size_type locsymcount;
6148 Elf_Internal_Shdr *symtab_hdr;
7fce784e 6149
0c8d6e5c 6150 if (!is_ppc_elf (ibfd))
25dbc73a 6151 continue;
7fce784e 6152
25dbc73a
AM
6153 for (s = ibfd->sections; s != NULL; s = s->next)
6154 {
f95f8542 6155 struct ppc_dyn_relocs *p;
252b5132 6156
f95f8542 6157 for (p = ((struct ppc_dyn_relocs *)
25dbc73a
AM
6158 elf_section_data (s)->local_dynrel);
6159 p != NULL;
6160 p = p->next)
6161 {
6162 if (!bfd_is_abs_section (p->sec)
6163 && bfd_is_abs_section (p->sec->output_section))
6164 {
6165 /* Input section has been discarded, either because
6166 it is a copy of a linkonce section or due to
6167 linker script /DISCARD/, so we'll be discarding
6168 the relocs too. */
7fce784e 6169 }
3348747a
NS
6170 else if (htab->is_vxworks
6171 && strcmp (p->sec->output_section->name,
6172 ".tls_vars") == 0)
6173 {
6174 /* Relocations in vxworks .tls_vars sections are
6175 handled specially by the loader. */
6176 }
25dbc73a 6177 else if (p->count != 0)
7fce784e 6178 {
25f23106 6179 asection *sreloc = elf_section_data (p->sec)->sreloc;
f95f8542 6180 if (p->ifunc)
25f23106
AM
6181 sreloc = htab->reliplt;
6182 sreloc->size += p->count * sizeof (Elf32_External_Rela);
25dbc73a
AM
6183 if ((p->sec->output_section->flags
6184 & (SEC_READONLY | SEC_ALLOC))
6185 == (SEC_READONLY | SEC_ALLOC))
6186 info->flags |= DF_TEXTREL;
7fce784e 6187 }
252b5132 6188 }
252b5132 6189 }
252b5132 6190
25dbc73a
AM
6191 local_got = elf_local_got_refcounts (ibfd);
6192 if (!local_got)
6193 continue;
252b5132 6194
0ffa91dd 6195 symtab_hdr = &elf_symtab_hdr (ibfd);
25dbc73a
AM
6196 locsymcount = symtab_hdr->sh_info;
6197 end_local_got = local_got + locsymcount;
e054468f
AM
6198 local_plt = (struct plt_entry **) end_local_got;
6199 end_local_plt = local_plt + locsymcount;
6200 lgot_masks = (char *) end_local_plt;
91d6fa6a 6201
25dbc73a
AM
6202 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6203 if (*local_got > 0)
6204 {
d6e14abc
AM
6205 unsigned int need = 0;
6206 if ((*lgot_masks & TLS_TLS) != 0)
25dbc73a 6207 {
d6e14abc
AM
6208 if ((*lgot_masks & TLS_GD) != 0)
6209 need += 8;
6210 if ((*lgot_masks & TLS_LD) != 0)
6211 htab->tlsld_got.refcount += 1;
6212 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6213 need += 4;
6214 if ((*lgot_masks & TLS_DTPREL) != 0)
6215 need += 4;
25dbc73a 6216 }
d6e14abc
AM
6217 else
6218 need += 4;
6219 if (need == 0)
6220 *local_got = (bfd_vma) -1;
25dbc73a
AM
6221 else
6222 {
3b36f7e6 6223 *local_got = allocate_got (htab, need);
25dbc73a 6224 if (info->shared)
0bed072f
AM
6225 {
6226 asection *srel = htab->relgot;
6227 if ((*lgot_masks & PLT_IFUNC) != 0)
6228 srel = htab->reliplt;
6229 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6230 }
25dbc73a
AM
6231 }
6232 }
6233 else
6234 *local_got = (bfd_vma) -1;
e054468f
AM
6235
6236 if (htab->is_vxworks)
6237 continue;
6238
6239 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6240 for (; local_plt < end_local_plt; ++local_plt)
6241 {
6242 struct plt_entry *ent;
6243 bfd_boolean doneone = FALSE;
6244 bfd_vma plt_offset = 0, glink_offset = 0;
6245
6246 for (ent = *local_plt; ent != NULL; ent = ent->next)
6247 if (ent->plt.refcount > 0)
6248 {
91d6fa6a 6249 s = htab->iplt;
e054468f
AM
6250
6251 if (!doneone)
6252 {
6253 plt_offset = s->size;
6254 s->size += 4;
6255 }
6256 ent->plt.offset = plt_offset;
6257
6258 s = htab->glink;
a877a2b6 6259 if (!doneone || info->shared)
e054468f
AM
6260 {
6261 glink_offset = s->size;
6262 s->size += GLINK_ENTRY_SIZE;
6263 }
6264 ent->glink_offset = glink_offset;
6265
6266 if (!doneone)
6267 {
25f23106 6268 htab->reliplt->size += sizeof (Elf32_External_Rela);
e054468f
AM
6269 doneone = TRUE;
6270 }
6271 }
6272 else
6273 ent->plt.offset = (bfd_vma) -1;
6274 }
25dbc73a 6275 }
252b5132 6276
b7fcf6f6
AM
6277 /* Allocate space for global sym dynamic relocs. */
6278 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6279
3b36f7e6
AM
6280 if (htab->tlsld_got.refcount > 0)
6281 {
6282 htab->tlsld_got.offset = allocate_got (htab, 8);
6283 if (info->shared)
6284 htab->relgot->size += sizeof (Elf32_External_Rela);
6285 }
6286 else
6287 htab->tlsld_got.offset = (bfd_vma) -1;
6288
4a3dc543 6289 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
3b36f7e6
AM
6290 {
6291 unsigned int g_o_t = 32768;
6292
4d962050
AM
6293 /* If we haven't allocated the header, do so now. When we get here,
6294 for old plt/got the got size will be 0 to 32764 (not allocated),
6295 or 32780 to 65536 (header allocated). For new plt/got, the
6296 corresponding ranges are 0 to 32768 and 32780 to 65536. */
3b36f7e6
AM
6297 if (htab->got->size <= 32768)
6298 {
6299 g_o_t = htab->got->size;
4a3dc543 6300 if (htab->plt_type == PLT_OLD)
4d962050 6301 g_o_t += 4;
3b36f7e6
AM
6302 htab->got->size += htab->got_header_size;
6303 }
3b36f7e6
AM
6304
6305 htab->elf.hgot->root.u.def.value = g_o_t;
6306 }
bd6c6e2b
AM
6307 if (info->shared)
6308 {
6309 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6310 if (sda != NULL
6311 && !(sda->root.type == bfd_link_hash_defined
6312 || sda->root.type == bfd_link_hash_defweak))
6313 {
6314 sda->root.type = bfd_link_hash_defined;
6315 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6316 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6317 }
6318 }
3b36f7e6 6319
e054468f
AM
6320 if (htab->glink != NULL
6321 && htab->glink->size != 0
6322 && htab->elf.dynamic_sections_created)
d7128ce4
AM
6323 {
6324 htab->glink_pltresolve = htab->glink->size;
86b9da88
AM
6325 /* Space for the branch table. */
6326 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6327 /* Pad out to align the start of PLTresolve. */
6328 htab->glink->size += -htab->glink->size & 15;
d7128ce4 6329 htab->glink->size += GLINK_PLTRESOLVE;
0ba07910
AM
6330
6331 if (htab->emit_stub_syms)
6332 {
6333 struct elf_link_hash_entry *sh;
6334 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6335 TRUE, FALSE, FALSE);
6336 if (sh == NULL)
6337 return FALSE;
6338 if (sh->root.type == bfd_link_hash_new)
6339 {
6340 sh->root.type = bfd_link_hash_defined;
6341 sh->root.u.def.section = htab->glink;
6342 sh->root.u.def.value = htab->glink_pltresolve;
6343 sh->ref_regular = 1;
6344 sh->def_regular = 1;
6345 sh->ref_regular_nonweak = 1;
6346 sh->forced_local = 1;
6347 sh->non_elf = 0;
6348 }
6349 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6350 TRUE, FALSE, FALSE);
6351 if (sh == NULL)
6352 return FALSE;
6353 if (sh->root.type == bfd_link_hash_new)
6354 {
6355 sh->root.type = bfd_link_hash_defined;
6356 sh->root.u.def.section = htab->glink;
6357 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6358 sh->ref_regular = 1;
6359 sh->def_regular = 1;
6360 sh->ref_regular_nonweak = 1;
6361 sh->forced_local = 1;
6362 sh->non_elf = 0;
6363 }
6364 }
d7128ce4
AM
6365 }
6366
6177242a
AM
6367 if (htab->glink != NULL
6368 && htab->glink->size != 0
6369 && htab->glink_eh_frame != NULL
9a2a56cc
AM
6370 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6371 && _bfd_elf_eh_frame_present (info))
6177242a
AM
6372 {
6373 s = htab->glink_eh_frame;
6374 s->size = sizeof (glink_eh_frame_cie) + 20;
6375 if (info->shared)
6376 {
6377 s->size += 4;
6378 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6379 s->size += 4;
6380 }
6381 }
6382
25dbc73a
AM
6383 /* We've now determined the sizes of the various dynamic sections.
6384 Allocate memory for them. */
6385 relocs = FALSE;
6386 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 6387 {
9d8504b1
PB
6388 bfd_boolean strip_section = TRUE;
6389
25dbc73a
AM
6390 if ((s->flags & SEC_LINKER_CREATED) == 0)
6391 continue;
252b5132 6392
25dbc73a 6393 if (s == htab->plt
e054468f 6394 || s == htab->got)
25dbc73a 6395 {
9d8504b1
PB
6396 /* We'd like to strip these sections if they aren't needed, but if
6397 we've exported dynamic symbols from them we must leave them.
6398 It's too late to tell BFD to get rid of the symbols. */
e054468f 6399 if (htab->elf.hplt != NULL)
9d8504b1 6400 strip_section = FALSE;
25dbc73a
AM
6401 /* Strip this section if we don't need it; see the
6402 comment below. */
6403 }
e054468f
AM
6404 else if (s == htab->iplt
6405 || s == htab->glink
6177242a 6406 || s == htab->glink_eh_frame
e054468f
AM
6407 || s == htab->sgotplt
6408 || s == htab->sbss
6409 || s == htab->dynbss
6410 || s == htab->dynsbss
6411 || s == htab->sdata[0].section
c9a2f333 6412 || s == htab->sdata[1].section)
25dbc73a 6413 {
c9a2f333 6414 /* Strip these too. */
25dbc73a 6415 }
a0f49396
NC
6416 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6417 ".rela"))
25dbc73a 6418 {
c456f082 6419 if (s->size != 0)
25dbc73a
AM
6420 {
6421 /* Remember whether there are any relocation sections. */
6422 relocs = TRUE;
252b5132 6423
25dbc73a
AM
6424 /* We use the reloc_count field as a counter if we need
6425 to copy relocs into the output file. */
6426 s->reloc_count = 0;
252b5132
RH
6427 }
6428 }
25dbc73a
AM
6429 else
6430 {
6431 /* It's not one of our sections, so don't allocate space. */
6432 continue;
6433 }
252b5132 6434
9d8504b1 6435 if (s->size == 0 && strip_section)
25dbc73a 6436 {
c456f082
AM
6437 /* If we don't need this section, strip it from the
6438 output file. This is mostly to handle .rela.bss and
6439 .rela.plt. We must create both sections in
6440 create_dynamic_sections, because they must be created
6441 before the linker maps input sections to output
6442 sections. The linker does that before
6443 adjust_dynamic_symbol is called, and it is that
6444 function which decides whether anything needs to go
6445 into these sections. */
8423293d 6446 s->flags |= SEC_EXCLUDE;
25dbc73a
AM
6447 continue;
6448 }
7fce784e 6449
d7128ce4 6450 if ((s->flags & SEC_HAS_CONTENTS) == 0)
644285ef
AM
6451 continue;
6452
25dbc73a
AM
6453 /* Allocate memory for the section contents. */
6454 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6455 if (s->contents == NULL)
6456 return FALSE;
6457 }
252b5132 6458
25dbc73a 6459 if (htab->elf.dynamic_sections_created)
7619e7c7 6460 {
25dbc73a
AM
6461 /* Add some entries to the .dynamic section. We fill in the
6462 values later, in ppc_elf_finish_dynamic_sections, but we
6463 must add the entries now so that we get the correct size for
6464 the .dynamic section. The DT_DEBUG entry is filled in by the
6465 dynamic linker and used by the debugger. */
6466#define add_dynamic_entry(TAG, VAL) \
6467 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 6468
25dbc73a 6469 if (info->executable)
7619e7c7 6470 {
25dbc73a
AM
6471 if (!add_dynamic_entry (DT_DEBUG, 0))
6472 return FALSE;
7619e7c7
AM
6473 }
6474
25dbc73a 6475 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 6476 {
25dbc73a
AM
6477 if (!add_dynamic_entry (DT_PLTGOT, 0)
6478 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6479 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6480 || !add_dynamic_entry (DT_JMPREL, 0))
6481 return FALSE;
6482 }
7619e7c7 6483
d7128ce4
AM
6484 if (htab->glink != NULL && htab->glink->size != 0)
6485 {
1fe44d79 6486 if (!add_dynamic_entry (DT_PPC_GOT, 0))
d7128ce4 6487 return FALSE;
a7f2871e
AM
6488 if (!htab->no_tls_get_addr_opt
6489 && htab->tls_get_addr != NULL
6490 && htab->tls_get_addr->plt.plist != NULL
e8910a83 6491 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
a7f2871e 6492 return FALSE;
d7128ce4
AM
6493 }
6494
25dbc73a
AM
6495 if (relocs)
6496 {
6497 if (!add_dynamic_entry (DT_RELA, 0)
6498 || !add_dynamic_entry (DT_RELASZ, 0)
6499 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6500 return FALSE;
6501 }
7619e7c7 6502
25dbc73a
AM
6503 /* If any dynamic relocs apply to a read-only section, then we
6504 need a DT_TEXTREL entry. */
6505 if ((info->flags & DF_TEXTREL) == 0)
625af618 6506 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
25dbc73a 6507 info);
7619e7c7 6508
25dbc73a
AM
6509 if ((info->flags & DF_TEXTREL) != 0)
6510 {
6511 if (!add_dynamic_entry (DT_TEXTREL, 0))
6512 return FALSE;
7619e7c7 6513 }
7a2b07ff
NS
6514 if (htab->is_vxworks
6515 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6516 return FALSE;
6517 }
25dbc73a
AM
6518#undef add_dynamic_entry
6519
7e01508c
AM
6520 if (htab->glink_eh_frame != NULL
6521 && htab->glink_eh_frame->contents != NULL)
6522 {
6523 unsigned char *p = htab->glink_eh_frame->contents;
6524 bfd_vma val;
6525
6526 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6527 /* CIE length (rewrite in case little-endian). */
6528 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6529 p += sizeof (glink_eh_frame_cie);
6530 /* FDE length. */
6531 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6532 bfd_put_32 (htab->elf.dynobj, val, p);
6533 p += 4;
6534 /* CIE pointer. */
6535 val = p - htab->glink_eh_frame->contents;
6536 bfd_put_32 (htab->elf.dynobj, val, p);
6537 p += 4;
6538 /* Offset to .glink. Set later. */
6539 p += 4;
6540 /* .glink size. */
6541 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6542 p += 4;
6543 /* Augmentation. */
6544 p += 1;
6545
6546 if (info->shared
6547 && htab->elf.dynamic_sections_created)
6548 {
6549 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6550 if (adv < 64)
6551 *p++ = DW_CFA_advance_loc + adv;
6552 else if (adv < 256)
6553 {
6554 *p++ = DW_CFA_advance_loc1;
6555 *p++ = adv;
6556 }
6557 else if (adv < 65536)
6558 {
6559 *p++ = DW_CFA_advance_loc2;
6560 bfd_put_16 (htab->elf.dynobj, adv, p);
6561 p += 2;
6562 }
6563 else
6564 {
6565 *p++ = DW_CFA_advance_loc4;
6566 bfd_put_32 (htab->elf.dynobj, adv, p);
6567 p += 4;
6568 }
6569 *p++ = DW_CFA_register;
6570 *p++ = 65;
6571 p++;
6572 *p++ = DW_CFA_advance_loc + 4;
6573 *p++ = DW_CFA_restore_extended;
6574 *p++ = 65;
6575 }
6576 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6577 == htab->glink_eh_frame->size);
6578 }
6579
7619e7c7
AM
6580 return TRUE;
6581}
0eb4a168
AM
6582
6583/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6584
6585static bfd_boolean
6586ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6587{
6588 if (h->plt.plist != NULL
6589 && !h->def_regular
6590 && (!h->pointer_equality_needed
6591 || !h->ref_regular_nonweak))
6592 return FALSE;
6593
6594 return _bfd_elf_hash_symbol (h);
6595}
25dbc73a
AM
6596\f
6597#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6598
01017ef8
NS
6599/* Relaxation trampolines. r12 is available for clobbering (r11, is
6600 used for some functions that are allowed to break the ABI). */
25dbc73a
AM
6601static const int shared_stub_entry[] =
6602 {
6603 0x7c0802a6, /* mflr 0 */
6604 0x429f0005, /* bcl 20, 31, .Lxxx */
01017ef8
NS
6605 0x7d8802a6, /* mflr 12 */
6606 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6607 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
25dbc73a 6608 0x7c0803a6, /* mtlr 0 */
01017ef8 6609 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6610 0x4e800420, /* bctr */
6611 };
6612
6613static const int stub_entry[] =
6614 {
01017ef8
NS
6615 0x3d800000, /* lis 12,xxx@ha */
6616 0x398c0000, /* addi 12,12,xxx@l */
6617 0x7d8903a6, /* mtctr 12 */
25dbc73a
AM
6618 0x4e800420, /* bctr */
6619 };
6620
6621static bfd_boolean
6622ppc_elf_relax_section (bfd *abfd,
6623 asection *isec,
6624 struct bfd_link_info *link_info,
6625 bfd_boolean *again)
6626{
6627 struct one_fixup
6628 {
6629 struct one_fixup *next;
6630 asection *tsec;
01017ef8
NS
6631 /* Final link, can use the symbol offset. For a
6632 relocatable link we use the symbol's index. */
25dbc73a
AM
6633 bfd_vma toff;
6634 bfd_vma trampoff;
6635 };
7619e7c7 6636
25dbc73a
AM
6637 Elf_Internal_Shdr *symtab_hdr;
6638 bfd_byte *contents = NULL;
6639 Elf_Internal_Sym *isymbuf = NULL;
6640 Elf_Internal_Rela *internal_relocs = NULL;
6641 Elf_Internal_Rela *irel, *irelend;
6642 struct one_fixup *fixups = NULL;
9bc4e62b 6643 unsigned changes = 0;
d7128ce4 6644 struct ppc_elf_link_hash_table *htab;
25dbc73a 6645 bfd_size_type trampoff;
a6aa5195 6646 asection *got2;
50248c89 6647 bfd_boolean maybe_pasted;
7619e7c7 6648
25dbc73a 6649 *again = FALSE;
7619e7c7 6650
c87b5a93 6651 /* Nothing to do if there are no relocations, and no need to do
a8ad78a7 6652 anything with non-alloc or non-code sections. */
c87b5a93 6653 if ((isec->flags & SEC_ALLOC) == 0
a8ad78a7 6654 || (isec->flags & SEC_CODE) == 0
c87b5a93
AM
6655 || (isec->flags & SEC_RELOC) == 0
6656 || isec->reloc_count == 0)
25dbc73a 6657 return TRUE;
7619e7c7 6658
c8a1f254
NS
6659 /* We cannot represent the required PIC relocs in the output, so don't
6660 do anything. The linker doesn't support mixing -shared and -r
6661 anyway. */
6662 if (link_info->relocatable && link_info->shared)
6663 return TRUE;
5b914448 6664
25dbc73a 6665 trampoff = (isec->size + 3) & (bfd_vma) -4;
50248c89
AM
6666 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6667 || strcmp (isec->output_section->name, ".fini") == 0);
25dbc73a 6668 /* Space for a branch around any trampolines. */
50248c89
AM
6669 if (maybe_pasted)
6670 trampoff += 4;
7619e7c7 6671
0ffa91dd 6672 symtab_hdr = &elf_symtab_hdr (abfd);
7619e7c7 6673
25dbc73a
AM
6674 /* Get a copy of the native relocations. */
6675 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6676 link_info->keep_memory);
6677 if (internal_relocs == NULL)
6678 goto error_return;
7619e7c7 6679
d7128ce4 6680 htab = ppc_elf_hash_table (link_info);
a6aa5195 6681 got2 = bfd_get_section_by_name (abfd, ".got2");
7619e7c7 6682
a6aa5195 6683 irelend = internal_relocs + isec->reloc_count;
25dbc73a 6684 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 6685 {
25dbc73a 6686 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
91d6fa6a 6687 bfd_vma toff, roff;
25dbc73a
AM
6688 asection *tsec;
6689 struct one_fixup *f;
6690 size_t insn_offset = 0;
6691 bfd_vma max_branch_offset, val;
6692 bfd_byte *hit_addr;
6693 unsigned long t0;
de972ffa 6694 struct elf_link_hash_entry *h;
a9585d22 6695 struct plt_entry **plist;
25dbc73a 6696 unsigned char sym_type;
7619e7c7 6697
25dbc73a
AM
6698 switch (r_type)
6699 {
6700 case R_PPC_REL24:
6701 case R_PPC_LOCAL24PC:
6702 case R_PPC_PLTREL24:
6703 max_branch_offset = 1 << 25;
6704 break;
7619e7c7 6705
25dbc73a
AM
6706 case R_PPC_REL14:
6707 case R_PPC_REL14_BRTAKEN:
6708 case R_PPC_REL14_BRNTAKEN:
6709 max_branch_offset = 1 << 15;
6710 break;
7619e7c7 6711
25dbc73a
AM
6712 default:
6713 continue;
6714 }
7619e7c7 6715
25dbc73a 6716 /* Get the value of the symbol referred to by the reloc. */
de972ffa 6717 h = NULL;
25dbc73a
AM
6718 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6719 {
6720 /* A local symbol. */
6721 Elf_Internal_Sym *isym;
7fce784e 6722
25dbc73a
AM
6723 /* Read this BFD's local symbols. */
6724 if (isymbuf == NULL)
6725 {
6726 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6727 if (isymbuf == NULL)
6728 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6729 symtab_hdr->sh_info, 0,
6730 NULL, NULL, NULL);
6731 if (isymbuf == 0)
6732 goto error_return;
6733 }
6734 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6735 if (isym->st_shndx == SHN_UNDEF)
c8a1f254 6736 tsec = bfd_und_section_ptr;
25dbc73a
AM
6737 else if (isym->st_shndx == SHN_ABS)
6738 tsec = bfd_abs_section_ptr;
6739 else if (isym->st_shndx == SHN_COMMON)
6740 tsec = bfd_com_section_ptr;
6741 else
6742 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 6743
25dbc73a
AM
6744 toff = isym->st_value;
6745 sym_type = ELF_ST_TYPE (isym->st_info);
6746 }
6747 else
6748 {
6749 /* Global symbol handling. */
6750 unsigned long indx;
7619e7c7 6751
25dbc73a
AM
6752 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6753 h = elf_sym_hashes (abfd)[indx];
7619e7c7 6754
25dbc73a
AM
6755 while (h->root.type == bfd_link_hash_indirect
6756 || h->root.type == bfd_link_hash_warning)
6757 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 6758
a9585d22
AM
6759 if (h->root.type == bfd_link_hash_defined
6760 || h->root.type == bfd_link_hash_defweak)
25dbc73a
AM
6761 {
6762 tsec = h->root.u.def.section;
6763 toff = h->root.u.def.value;
6764 }
c8a1f254
NS
6765 else if (h->root.type == bfd_link_hash_undefined
6766 || h->root.type == bfd_link_hash_undefweak)
6767 {
6768 tsec = bfd_und_section_ptr;
01017ef8 6769 toff = link_info->relocatable ? indx : 0;
c8a1f254 6770 }
25dbc73a
AM
6771 else
6772 continue;
7619e7c7 6773
25dbc73a
AM
6774 sym_type = h->type;
6775 }
7619e7c7 6776
a9585d22
AM
6777 /* The condition here under which we call find_plt_ent must
6778 match that in relocate_section. If we call find_plt_ent here
6779 but not in relocate_section, or vice versa, then the branch
6780 destination used here may be incorrect. */
6781 plist = NULL;
6782 if (h != NULL)
de972ffa 6783 {
a9585d22
AM
6784 /* We know is_branch_reloc (r_type) is true. */
6785 if (h->type == STT_GNU_IFUNC
6786 || r_type == R_PPC_PLTREL24)
de972ffa 6787 plist = &h->plt.plist;
a9585d22
AM
6788 }
6789 else if (sym_type == STT_GNU_IFUNC
6790 && elf_local_got_offsets (abfd) != NULL)
6791 {
6792 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6793 struct plt_entry **local_plt = (struct plt_entry **)
6794 (local_got_offsets + symtab_hdr->sh_info);
6795 plist = local_plt + ELF32_R_SYM (irel->r_info);
6796 }
6797 if (plist != NULL)
6798 {
6799 bfd_vma addend = 0;
6800 struct plt_entry *ent;
de972ffa 6801
a9585d22
AM
6802 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6803 addend = irel->r_addend;
6804 ent = find_plt_ent (plist, got2, addend);
6805 if (ent != NULL)
6806 {
6807 if (htab->plt_type == PLT_NEW
6808 || h == NULL
6809 || !htab->elf.dynamic_sections_created
6810 || h->dynindx == -1)
de972ffa 6811 {
a9585d22
AM
6812 tsec = htab->glink;
6813 toff = ent->glink_offset;
6814 }
6815 else
6816 {
6817 tsec = htab->plt;
6818 toff = ent->plt.offset;
de972ffa
AM
6819 }
6820 }
6821 }
6822
25dbc73a
AM
6823 /* If the branch and target are in the same section, you have
6824 no hope of adding stubs. We'll error out later should the
6825 branch overflow. */
6826 if (tsec == isec)
6827 continue;
6828
6829 /* There probably isn't any reason to handle symbols in
6830 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6831 attribute for a code section, and we are only looking at
6832 branches. However, implement it correctly here as a
6833 reference for other target relax_section functions. */
dbaa2011 6834 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
25dbc73a
AM
6835 {
6836 /* At this stage in linking, no SEC_MERGE symbol has been
6837 adjusted, so all references to such symbols need to be
6838 passed through _bfd_merged_section_offset. (Later, in
6839 relocate_section, all SEC_MERGE symbols *except* for
6840 section symbols have been adjusted.)
6841
6842 gas may reduce relocations against symbols in SEC_MERGE
6843 sections to a relocation against the section symbol when
6844 the original addend was zero. When the reloc is against
6845 a section symbol we should include the addend in the
6846 offset passed to _bfd_merged_section_offset, since the
6847 location of interest is the original symbol. On the
6848 other hand, an access to "sym+addend" where "sym" is not
6849 a section symbol should not include the addend; Such an
6850 access is presumed to be an offset from "sym"; The
6851 location of interest is just "sym". */
6852 if (sym_type == STT_SECTION)
6853 toff += irel->r_addend;
7619e7c7 6854
25dbc73a
AM
6855 toff = _bfd_merged_section_offset (abfd, &tsec,
6856 elf_section_data (tsec)->sec_info,
6857 toff);
7619e7c7 6858
25dbc73a
AM
6859 if (sym_type != STT_SECTION)
6860 toff += irel->r_addend;
6861 }
a6aa5195
AM
6862 /* PLTREL24 addends are special. */
6863 else if (r_type != R_PPC_PLTREL24)
25dbc73a 6864 toff += irel->r_addend;
7619e7c7 6865
7de713b9
AM
6866 /* Attempted -shared link of non-pic code loses. */
6867 if (tsec->output_section == NULL)
6868 continue;
6869
25dbc73a 6870 roff = irel->r_offset;
7619e7c7 6871
25dbc73a 6872 /* If the branch is in range, no need to do anything. */
c8a1f254
NS
6873 if (tsec != bfd_und_section_ptr
6874 && (!link_info->relocatable
6875 /* A relocatable link may have sections moved during
6876 final link, so do not presume they remain in range. */
01017ef8
NS
6877 || tsec->output_section == isec->output_section))
6878 {
6879 bfd_vma symaddr, reladdr;
6880
6881 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6882 reladdr = isec->output_section->vma + isec->output_offset + roff;
6883 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6884 continue;
6885 }
252b5132 6886
25dbc73a
AM
6887 /* Look for an existing fixup to this address. */
6888 for (f = fixups; f ; f = f->next)
6889 if (f->tsec == tsec && f->toff == toff)
6890 break;
6891
6892 if (f == NULL)
7619e7c7 6893 {
25dbc73a
AM
6894 size_t size;
6895 unsigned long stub_rtype;
252b5132 6896
25dbc73a
AM
6897 val = trampoff - roff;
6898 if (val >= max_branch_offset)
6899 /* Oh dear, we can't reach a trampoline. Don't try to add
6900 one. We'll report an error later. */
6901 continue;
252b5132 6902
25dbc73a
AM
6903 if (link_info->shared)
6904 {
6905 size = 4 * ARRAY_SIZE (shared_stub_entry);
6906 insn_offset = 12;
25dbc73a
AM
6907 }
6908 else
6909 {
6910 size = 4 * ARRAY_SIZE (stub_entry);
6911 insn_offset = 0;
25dbc73a 6912 }
32af9f6e 6913 stub_rtype = R_PPC_RELAX;
d7128ce4
AM
6914 if (tsec == htab->plt
6915 || tsec == htab->glink)
32af9f6e
AM
6916 {
6917 stub_rtype = R_PPC_RELAX_PLT;
6918 if (r_type == R_PPC_PLTREL24)
6919 stub_rtype = R_PPC_RELAX_PLTREL24;
6920 }
252b5132 6921
25dbc73a
AM
6922 /* Hijack the old relocation. Since we need two
6923 relocations for this use a "composite" reloc. */
6924 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6925 stub_rtype);
6926 irel->r_offset = trampoff + insn_offset;
32af9f6e
AM
6927 if (r_type == R_PPC_PLTREL24
6928 && stub_rtype != R_PPC_RELAX_PLTREL24)
e7d92e2e 6929 irel->r_addend = 0;
252b5132 6930
25dbc73a
AM
6931 /* Record the fixup so we don't do it again this section. */
6932 f = bfd_malloc (sizeof (*f));
6933 f->next = fixups;
6934 f->tsec = tsec;
6935 f->toff = toff;
6936 f->trampoff = trampoff;
6937 fixups = f;
252b5132 6938
25dbc73a 6939 trampoff += size;
9bc4e62b 6940 changes++;
25dbc73a
AM
6941 }
6942 else
6943 {
6944 val = f->trampoff - roff;
6945 if (val >= max_branch_offset)
6946 continue;
252b5132 6947
25dbc73a
AM
6948 /* Nop out the reloc, since we're finalizing things here. */
6949 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6950 }
252b5132 6951
25dbc73a
AM
6952 /* Get the section contents. */
6953 if (contents == NULL)
6954 {
6955 /* Get cached copy if it exists. */
6956 if (elf_section_data (isec)->this_hdr.contents != NULL)
6957 contents = elf_section_data (isec)->this_hdr.contents;
6958 else
6959 {
6960 /* Go get them off disk. */
6961 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6962 goto error_return;
6963 }
6964 }
252b5132 6965
25dbc73a
AM
6966 /* Fix up the existing branch to hit the trampoline. */
6967 hit_addr = contents + roff;
6968 switch (r_type)
6969 {
6970 case R_PPC_REL24:
6971 case R_PPC_LOCAL24PC:
6972 case R_PPC_PLTREL24:
6973 t0 = bfd_get_32 (abfd, hit_addr);
6974 t0 &= ~0x3fffffc;
6975 t0 |= val & 0x3fffffc;
6976 bfd_put_32 (abfd, t0, hit_addr);
6977 break;
252b5132 6978
25dbc73a
AM
6979 case R_PPC_REL14:
6980 case R_PPC_REL14_BRTAKEN:
6981 case R_PPC_REL14_BRNTAKEN:
6982 t0 = bfd_get_32 (abfd, hit_addr);
6983 t0 &= ~0xfffc;
6984 t0 |= val & 0xfffc;
6985 bfd_put_32 (abfd, t0, hit_addr);
6986 break;
6987 }
6988 }
252b5132 6989
25dbc73a 6990 /* Write out the trampolines. */
25dbc73a
AM
6991 if (fixups != NULL)
6992 {
6993 const int *stub;
6994 bfd_byte *dest;
25dbc73a 6995 int i, size;
252b5132 6996
25dbc73a
AM
6997 do
6998 {
6999 struct one_fixup *f = fixups;
7000 fixups = fixups->next;
7001 free (f);
7002 }
7003 while (fixups);
252b5132 7004
515ef31d 7005 contents = bfd_realloc_or_free (contents, trampoff);
25dbc73a
AM
7006 if (contents == NULL)
7007 goto error_return;
252b5132 7008
25dbc73a 7009 isec->size = (isec->size + 3) & (bfd_vma) -4;
25dbc73a 7010 dest = contents + isec->size;
50248c89
AM
7011 /* Branch around the trampolines. */
7012 if (maybe_pasted)
7013 {
7014 bfd_vma val = B + trampoff - isec->size;
7015 bfd_put_32 (abfd, val, dest);
7016 dest += 4;
7017 }
25dbc73a 7018 isec->size = trampoff;
252b5132 7019
25dbc73a
AM
7020 if (link_info->shared)
7021 {
7022 stub = shared_stub_entry;
7023 size = ARRAY_SIZE (shared_stub_entry);
7024 }
7025 else
7026 {
7027 stub = stub_entry;
7028 size = ARRAY_SIZE (stub_entry);
7029 }
252b5132 7030
25dbc73a
AM
7031 i = 0;
7032 while (dest < contents + trampoff)
252b5132 7033 {
25dbc73a
AM
7034 bfd_put_32 (abfd, stub[i], dest);
7035 i++;
7036 if (i == size)
7037 i = 0;
7038 dest += 4;
252b5132 7039 }
25dbc73a 7040 BFD_ASSERT (i == 0);
252b5132
RH
7041 }
7042
25dbc73a
AM
7043 if (isymbuf != NULL
7044 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 7045 {
25dbc73a
AM
7046 if (! link_info->keep_memory)
7047 free (isymbuf);
252b5132 7048 else
25dbc73a
AM
7049 {
7050 /* Cache the symbols for elf_link_input_bfd. */
7051 symtab_hdr->contents = (unsigned char *) isymbuf;
7052 }
252b5132
RH
7053 }
7054
25dbc73a
AM
7055 if (contents != NULL
7056 && elf_section_data (isec)->this_hdr.contents != contents)
7057 {
9bc4e62b 7058 if (!changes && !link_info->keep_memory)
25dbc73a
AM
7059 free (contents);
7060 else
7061 {
7062 /* Cache the section contents for elf_link_input_bfd. */
7063 elf_section_data (isec)->this_hdr.contents = contents;
7064 }
7065 }
252b5132 7066
9bc4e62b 7067 if (changes != 0)
25dbc73a 7068 {
9bc4e62b
NS
7069 /* Append sufficient NOP relocs so we can write out relocation
7070 information for the trampolines. */
d4730f92 7071 Elf_Internal_Shdr *rel_hdr;
9bc4e62b
NS
7072 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7073 * sizeof (*new_relocs));
7074 unsigned ix;
5b914448 7075
9bc4e62b
NS
7076 if (!new_relocs)
7077 goto error_return;
7078 memcpy (new_relocs, internal_relocs,
7079 isec->reloc_count * sizeof (*new_relocs));
7080 for (ix = changes; ix--;)
7081 {
7082 irel = new_relocs + ix + isec->reloc_count;
7083
7084 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7085 }
7086 if (internal_relocs != elf_section_data (isec)->relocs)
25dbc73a 7087 free (internal_relocs);
9bc4e62b
NS
7088 elf_section_data (isec)->relocs = new_relocs;
7089 isec->reloc_count += changes;
d4730f92
BS
7090 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7091 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
25dbc73a 7092 }
9bc4e62b
NS
7093 else if (elf_section_data (isec)->relocs != internal_relocs)
7094 free (internal_relocs);
252b5132 7095
9bc4e62b 7096 *again = changes != 0;
c8a1f254
NS
7097 if (!*again && link_info->relocatable)
7098 {
7099 /* Convert the internal relax relocs to external form. */
7100 for (irel = internal_relocs; irel < irelend; irel++)
32af9f6e 7101 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
c8a1f254
NS
7102 {
7103 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
7104
7105 /* Rewrite the reloc and convert one of the trailing nop
7106 relocs to describe this relocation. */
7107 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
7108 /* The relocs are at the bottom 2 bytes */
7109 irel[0].r_offset += 2;
7110 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
7111 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7112 irel[1].r_offset += 4;
7113 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7114 irel++;
7115 }
7116 }
5b914448 7117
b34976b6 7118 return TRUE;
25dbc73a
AM
7119
7120 error_return:
7121 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7122 free (isymbuf);
7123 if (contents != NULL
7124 && elf_section_data (isec)->this_hdr.contents != contents)
7125 free (contents);
7126 if (internal_relocs != NULL
7127 && elf_section_data (isec)->relocs != internal_relocs)
7128 free (internal_relocs);
7129 return FALSE;
252b5132 7130}
252b5132 7131\f
8a696751
AM
7132/* What to do when ld finds relocations against symbols defined in
7133 discarded sections. */
7134
7135static unsigned int
7136ppc_elf_action_discarded (asection *sec)
7137{
7138 if (strcmp (".fixup", sec->name) == 0)
7139 return 0;
7140
7141 if (strcmp (".got2", sec->name) == 0)
7142 return 0;
7143
7144 return _bfd_elf_default_action_discarded (sec);
7145}
c9a2f333 7146\f
25dbc73a 7147/* Fill in the address for a pointer generated in a linker section. */
252b5132 7148
25dbc73a 7149static bfd_vma
76750a2f 7150elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM
7151 elf_linker_section_t *lsect,
7152 struct elf_link_hash_entry *h,
7153 bfd_vma relocation,
2bb04cf2 7154 const Elf_Internal_Rela *rel)
25dbc73a
AM
7155{
7156 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 7157
25dbc73a 7158 BFD_ASSERT (lsect != NULL);
252b5132 7159
25dbc73a 7160 if (h != NULL)
252b5132 7161 {
25dbc73a
AM
7162 /* Handle global symbol. */
7163 struct ppc_elf_link_hash_entry *eh;
252b5132 7164
25dbc73a 7165 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM
7166 BFD_ASSERT (eh->elf.def_regular);
7167 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM
7168 }
7169 else
7170 {
7171 /* Handle local symbol. */
7172 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 7173
0c8d6e5c 7174 BFD_ASSERT (is_ppc_elf (input_bfd));
25dbc73a 7175 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM
7176 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7177 }
252b5132 7178
76750a2f
AM
7179 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7180 rel->r_addend,
7181 lsect);
7182 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 7183
76750a2f
AM
7184 /* Offset will always be a multiple of four, so use the bottom bit
7185 as a "written" flag. */
7186 if ((linker_section_ptr->offset & 1) == 0)
7187 {
7188 bfd_put_32 (lsect->section->owner,
7189 relocation + linker_section_ptr->addend,
7190 lsect->section->contents + linker_section_ptr->offset);
7191 linker_section_ptr->offset += 1;
252b5132
RH
7192 }
7193
bd6c6e2b
AM
7194 relocation = (lsect->section->output_section->vma
7195 + lsect->section->output_offset
76750a2f 7196 + linker_section_ptr->offset - 1
bd6c6e2b 7197 - SYM_VAL (lsect->sym));
252b5132 7198
25dbc73a
AM
7199#ifdef DEBUG
7200 fprintf (stderr,
7201 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7202 lsect->name, (long) relocation, (long) relocation);
7203#endif
252b5132 7204
bd6c6e2b 7205 return relocation;
252b5132 7206}
25dbc73a 7207
e054468f
AM
7208#define PPC_LO(v) ((v) & 0xffff)
7209#define PPC_HI(v) (((v) >> 16) & 0xffff)
7210#define PPC_HA(v) PPC_HI ((v) + 0x8000)
7211
7212static void
a7f2871e 7213write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
e054468f
AM
7214 struct bfd_link_info *info)
7215{
7216 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7217 bfd *output_bfd = info->output_bfd;
7218 bfd_vma plt;
e054468f
AM
7219
7220 plt = ((ent->plt.offset & ~1)
7221 + plt_sec->output_section->vma
7222 + plt_sec->output_offset);
e054468f 7223
a877a2b6 7224 if (info->shared)
e054468f
AM
7225 {
7226 bfd_vma got = 0;
7227
7228 if (ent->addend >= 32768)
7229 got = (ent->addend
7230 + ent->sec->output_section->vma
7231 + ent->sec->output_offset);
7232 else if (htab->elf.hgot != NULL)
7233 got = SYM_VAL (htab->elf.hgot);
7234
7235 plt -= got;
7236
7237 if (plt + 0x8000 < 0x10000)
7238 {
7239 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7240 p += 4;
7241 bfd_put_32 (output_bfd, MTCTR_11, p);
7242 p += 4;
7243 bfd_put_32 (output_bfd, BCTR, p);
7244 p += 4;
7245 bfd_put_32 (output_bfd, NOP, p);
7246 p += 4;
7247 }
7248 else
7249 {
7250 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7251 p += 4;
7252 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7253 p += 4;
7254 bfd_put_32 (output_bfd, MTCTR_11, p);
7255 p += 4;
7256 bfd_put_32 (output_bfd, BCTR, p);
7257 p += 4;
7258 }
7259 }
7260 else
7261 {
7262 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7263 p += 4;
7264 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7265 p += 4;
7266 bfd_put_32 (output_bfd, MTCTR_11, p);
7267 p += 4;
7268 bfd_put_32 (output_bfd, BCTR, p);
7269 p += 4;
7270 }
7271}
7272
bd6c6e2b
AM
7273/* Return true if symbol is defined statically. */
7274
7275static bfd_boolean
7276is_static_defined (struct elf_link_hash_entry *h)
7277{
7278 return ((h->root.type == bfd_link_hash_defined
7279 || h->root.type == bfd_link_hash_defweak)
7280 && h->root.u.def.section != NULL
7281 && h->root.u.def.section->output_section != NULL);
7282}
7283
2d0f3896
AM
7284/* If INSN is an opcode that may be used with an @tls operand, return
7285 the transformed insn for TLS optimisation, otherwise return 0. If
7286 REG is non-zero only match an insn with RB or RA equal to REG. */
7287
7288unsigned int
7289_bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7290{
7291 unsigned int rtra;
7292
7293 if ((insn & (0x3f << 26)) != 31 << 26)
7294 return 0;
7295
7296 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7297 rtra = insn & ((1 << 26) - (1 << 16));
7298 else if (((insn >> 16) & 0x1f) == reg)
7299 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7300 else
7301 return 0;
7302
7303 if ((insn & (0x3ff << 1)) == 266 << 1)
7304 /* add -> addi. */
7305 insn = 14 << 26;
7306 else if ((insn & (0x1f << 1)) == 23 << 1
7307 && ((insn & (0x1f << 6)) < 14 << 6
7308 || ((insn & (0x1f << 6)) >= 16 << 6
7309 && (insn & (0x1f << 6)) < 24 << 6)))
7310 /* load and store indexed -> dform. */
7311 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7312 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7313 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7314 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7315 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7316 /* lwax -> lwa. */
7317 insn = (58 << 26) | 2;
7318 else
7319 return 0;
7320 insn |= rtra;
7321 return insn;
7322}
7323
766bc656
AM
7324/* If INSN is an opcode that may be used with an @tprel operand, return
7325 the transformed insn for an undefined weak symbol, ie. with the
7326 thread pointer REG operand removed. Otherwise return 0. */
7327
7328unsigned int
7329_bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7330{
7331 if ((insn & (0x1f << 16)) == reg << 16
7332 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7333 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7334 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7335 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7336 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7337 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7338 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7339 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7340 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7341 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7342 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7343 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7344 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7345 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7346 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7347 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7348 && (insn & 3) != 1)
7349 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7350 && ((insn & 3) == 0 || (insn & 3) == 3))))
7351 {
7352 insn &= ~(0x1f << 16);
7353 }
7354 else if ((insn & (0x1f << 21)) == reg << 21
7355 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7356 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7357 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7358 {
7359 insn &= ~(0x1f << 21);
7360 insn |= (insn & (0x1f << 16)) << 5;
7361 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7362 insn -= 2 >> 26; /* convert to ori,oris */
7363 }
7364 else
7365 insn = 0;
7366 return insn;
7367}
7368
1fe532cf
AM
7369static bfd_boolean
7370is_insn_ds_form (unsigned int insn)
7371{
7372 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7373 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7374 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7375 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7376}
7377
7378static bfd_boolean
7379is_insn_dq_form (unsigned int insn)
7380{
7381 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7382}
7383
252b5132
RH
7384/* The RELOCATE_SECTION function is called by the ELF backend linker
7385 to handle the relocations for a section.
7386
7387 The relocs are always passed as Rela structures; if the section
7388 actually uses Rel structures, the r_addend field will always be
7389 zero.
7390
7391 This function is responsible for adjust the section contents as
7392 necessary, and (if using Rela relocs and generating a
1049f94e 7393 relocatable output file) adjusting the reloc addend as
252b5132
RH
7394 necessary.
7395
7396 This function does not have to worry about setting the reloc
7397 address or the reloc symbol index.
7398
7399 LOCAL_SYMS is a pointer to the swapped in local symbols.
7400
7401 LOCAL_SECTIONS is an array giving the section in the input file
7402 corresponding to the st_shndx field of each local symbol.
7403
7404 The global hash table entry for the global symbols can be found
7405 via elf_sym_hashes (input_bfd).
7406
1049f94e 7407 When generating relocatable output, this function must handle
252b5132
RH
7408 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7409 going to be the section symbol corresponding to the output
7410 section, which means that the addend must be adjusted
7411 accordingly. */
7412
b34976b6 7413static bfd_boolean
55fd94b0
AM
7414ppc_elf_relocate_section (bfd *output_bfd,
7415 struct bfd_link_info *info,
7416 bfd *input_bfd,
7417 asection *input_section,
7418 bfd_byte *contents,
7419 Elf_Internal_Rela *relocs,
7420 Elf_Internal_Sym *local_syms,
7421 asection **local_sections)
252b5132 7422{
7619e7c7
AM
7423 Elf_Internal_Shdr *symtab_hdr;
7424 struct elf_link_hash_entry **sym_hashes;
7425 struct ppc_elf_link_hash_table *htab;
7426 Elf_Internal_Rela *rel;
7427 Elf_Internal_Rela *relend;
7428 Elf_Internal_Rela outrel;
f95f8542 7429 asection *got2;
252b5132 7430 bfd_vma *local_got_offsets;
b34976b6 7431 bfd_boolean ret = TRUE;
4fe5ca5b 7432 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
3348747a 7433 bfd_boolean is_vxworks_tls;
b34976b6 7434
252b5132 7435#ifdef DEBUG
d003868e
AM
7436 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7437 "%ld relocations%s",
7438 input_bfd, input_section,
7439 (long) input_section->reloc_count,
7440 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH
7441#endif
7442
a6aa5195
AM
7443 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7444
e47cd125 7445 /* Initialize howto table if not already done. */
8da6118f 7446 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH
7447 ppc_elf_howto_init ();
7448
7619e7c7 7449 htab = ppc_elf_hash_table (info);
252b5132 7450 local_got_offsets = elf_local_got_offsets (input_bfd);
0ffa91dd 7451 symtab_hdr = &elf_symtab_hdr (input_bfd);
7619e7c7 7452 sym_hashes = elf_sym_hashes (input_bfd);
3348747a
NS
7453 /* We have to handle relocations in vxworks .tls_vars sections
7454 specially, because the dynamic loader is 'weird'. */
7455 is_vxworks_tls = (htab->is_vxworks && info->shared
7456 && !strcmp (input_section->output_section->name,
7457 ".tls_vars"));
7619e7c7
AM
7458 rel = relocs;
7459 relend = relocs + input_section->reloc_count;
252b5132
RH
7460 for (; rel < relend; rel++)
7461 {
7619e7c7
AM
7462 enum elf_ppc_reloc_type r_type;
7463 bfd_vma addend;
7464 bfd_reloc_status_type r;
7465 Elf_Internal_Sym *sym;
7466 asection *sec;
7467 struct elf_link_hash_entry *h;
7468 const char *sym_name;
252b5132
RH
7469 reloc_howto_type *howto;
7470 unsigned long r_symndx;
7471 bfd_vma relocation;
91d6fa6a 7472 bfd_vma branch_bit, from;
7619e7c7
AM
7473 bfd_boolean unresolved_reloc;
7474 bfd_boolean warned;
7475 unsigned int tls_type, tls_mask, tls_gd;
e054468f 7476 struct plt_entry **ifunc;
7619e7c7 7477
55fd94b0
AM
7478 r_type = ELF32_R_TYPE (rel->r_info);
7479 sym = NULL;
7480 sec = NULL;
7481 h = NULL;
7619e7c7
AM
7482 unresolved_reloc = FALSE;
7483 warned = FALSE;
252b5132 7484 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 7485
252b5132
RH
7486 if (r_symndx < symtab_hdr->sh_info)
7487 {
7488 sym = local_syms + r_symndx;
7489 sec = local_sections[r_symndx];
26c61ae5 7490 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 7491
8517fae7 7492 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
7493 }
7494 else
7495 {
b2a8e766
AM
7496 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7497 r_symndx, symtab_hdr, sym_hashes,
7498 h, sec, relocation,
7499 unresolved_reloc, warned);
9abc968f 7500
252b5132 7501 sym_name = h->root.root.string;
7619e7c7
AM
7502 }
7503
dbaa2011 7504 if (sec != NULL && discarded_section (sec))
ab96bf03
AM
7505 {
7506 /* For relocs against symbols from removed linkonce sections,
7507 or sections discarded by a linker script, we just want the
7508 section contents zeroed. Avoid any special processing. */
7509 howto = NULL;
7510 if (r_type < R_PPC_max)
7511 howto = ppc_elf_howto_table[r_type];
e4067dbb 7512 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 7513 rel, 1, relend, howto, 0, contents);
ab96bf03
AM
7514 }
7515
7516 if (info->relocatable)
7517 {
7518 if (got2 != NULL
7519 && r_type == R_PPC_PLTREL24
f75e0e33 7520 && rel->r_addend != 0)
ab96bf03
AM
7521 {
7522 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7523 addend specifies the GOT pointer offset within .got2. */
7524 rel->r_addend += got2->output_offset;
7525 }
7526 continue;
7527 }
7528
7619e7c7
AM
7529 /* TLS optimizations. Replace instruction sequences and relocs
7530 based on information we collected in tls_optimize. We edit
7531 RELOCS so that --emit-relocs will output something sensible
7532 for the final instruction stream. */
7533 tls_mask = 0;
7534 tls_gd = 0;
727fc41e
AM
7535 if (h != NULL)
7536 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7537 else if (local_got_offsets != NULL)
7619e7c7 7538 {
e054468f 7539 struct plt_entry **local_plt;
727fc41e 7540 char *lgot_masks;
e054468f
AM
7541 local_plt
7542 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7543 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
727fc41e 7544 tls_mask = lgot_masks[r_symndx];
7619e7c7
AM
7545 }
7546
7547 /* Ensure reloc mapping code below stays sane. */
7548 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7549 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7550 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7551 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7552 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7553 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7554 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7555 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7556 abort ();
7557 switch (r_type)
7558 {
7559 default:
7560 break;
7561
7562 case R_PPC_GOT_TPREL16:
7563 case R_PPC_GOT_TPREL16_LO:
e054468f 7564 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7565 && (tls_mask & TLS_TPREL) == 0)
7566 {
7567 bfd_vma insn;
91d6fa6a 7568
4fe5ca5b 7569 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7619e7c7
AM
7570 insn &= 31 << 21;
7571 insn |= 0x3c020000; /* addis 0,2,0 */
4fe5ca5b 7572 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7619e7c7
AM
7573 r_type = R_PPC_TPREL16_HA;
7574 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7575 }
7576 break;
7577
7578 case R_PPC_TLS:
e054468f 7579 if ((tls_mask & TLS_TLS) != 0
7619e7c7
AM
7580 && (tls_mask & TLS_TPREL) == 0)
7581 {
2d0f3896
AM
7582 bfd_vma insn;
7583
7619e7c7 7584 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM
7585 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7586 if (insn == 0)
7619e7c7 7587 abort ();
7619e7c7
AM
7588 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7589 r_type = R_PPC_TPREL16_LO;
7590 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4fe5ca5b 7591
7619e7c7 7592 /* Was PPC_TLS which sits on insn boundary, now
4fe5ca5b
GM
7593 PPC_TPREL16_LO which is at low-order half-word. */
7594 rel->r_offset += d_offset;
7619e7c7
AM
7595 }
7596 break;
7597
7598 case R_PPC_GOT_TLSGD16_HI:
7599 case R_PPC_GOT_TLSGD16_HA:
7600 tls_gd = TLS_TPRELGD;
e054468f 7601 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7619e7c7
AM
7602 goto tls_gdld_hi;
7603 break;
7604
7605 case R_PPC_GOT_TLSLD16_HI:
7606 case R_PPC_GOT_TLSLD16_HA:
e054468f 7607 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7
AM
7608 {
7609 tls_gdld_hi:
7610 if ((tls_mask & tls_gd) != 0)
7611 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7612 + R_PPC_GOT_TPREL16);
7613 else
7614 {
7615 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 7616 rel->r_offset -= d_offset;
7619e7c7
AM
7617 r_type = R_PPC_NONE;
7618 }
7619 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7620 }
7621 break;
7622
7623 case R_PPC_GOT_TLSGD16:
7624 case R_PPC_GOT_TLSGD16_LO:
7625 tls_gd = TLS_TPRELGD;
e054468f 7626 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
b7fcf6f6 7627 goto tls_ldgd_opt;
7619e7c7
AM
7628 break;
7629
7630 case R_PPC_GOT_TLSLD16:
7631 case R_PPC_GOT_TLSLD16_LO:
e054468f 7632 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7619e7c7 7633 {
3a71aa26 7634 unsigned int insn1, insn2;
b7fcf6f6 7635 bfd_vma offset;
7619e7c7 7636
b7fcf6f6 7637 tls_ldgd_opt:
727fc41e
AM
7638 offset = (bfd_vma) -1;
7639 /* If not using the newer R_PPC_TLSGD/LD to mark
7640 __tls_get_addr calls, we must trust that the call
7641 stays with its arg setup insns, ie. that the next
7642 reloc is the __tls_get_addr call associated with
7643 the current reloc. Edit both insns. */
7644 if (input_section->has_tls_get_addr_call
7645 && rel + 1 < relend
7646 && branch_reloc_hash_match (input_bfd, rel + 1,
7647 htab->tls_get_addr))
7648 offset = rel[1].r_offset;
b7fcf6f6
AM
7649 if ((tls_mask & tls_gd) != 0)
7650 {
7651 /* IE */
3a71aa26
AM
7652 insn1 = bfd_get_32 (output_bfd,
7653 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
7654 insn1 &= (1 << 26) - 1;
7655 insn1 |= 32 << 26; /* lwz */
727fc41e
AM
7656 if (offset != (bfd_vma) -1)
7657 {
f58d5a2d 7658 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
7659 insn2 = 0x7c631214; /* add 3,3,2 */
7660 bfd_put_32 (output_bfd, insn2, contents + offset);
7661 }
b7fcf6f6
AM
7662 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7663 + R_PPC_GOT_TPREL16);
7664 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7665 }
7666 else
7667 {
7668 /* LE */
7669 insn1 = 0x3c620000; /* addis 3,2,0 */
7619e7c7
AM
7670 if (tls_gd == 0)
7671 {
b7fcf6f6 7672 /* Was an LD reloc. */
1d483afe
AM
7673 for (r_symndx = 0;
7674 r_symndx < symtab_hdr->sh_info;
7675 r_symndx++)
7676 if (local_sections[r_symndx] == sec)
7677 break;
7678 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 7679 r_symndx = STN_UNDEF;
b7fcf6f6 7680 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 7681 if (r_symndx != STN_UNDEF)
1d483afe
AM
7682 rel->r_addend -= (local_syms[r_symndx].st_value
7683 + sec->output_offset
7684 + sec->output_section->vma);
7619e7c7 7685 }
b7fcf6f6
AM
7686 r_type = R_PPC_TPREL16_HA;
7687 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
727fc41e
AM
7688 if (offset != (bfd_vma) -1)
7689 {
7690 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7691 rel[1].r_offset = offset + d_offset;
7692 rel[1].r_addend = rel->r_addend;
7693 insn2 = 0x38630000; /* addi 3,3,0 */
7694 bfd_put_32 (output_bfd, insn2, contents + offset);
7695 }
b7fcf6f6
AM
7696 }
7697 bfd_put_32 (output_bfd, insn1,
7698 contents + rel->r_offset - d_offset);
b7fcf6f6
AM
7699 if (tls_gd == 0)
7700 {
7701 /* We changed the symbol on an LD reloc. Start over
7702 in order to get h, sym, sec etc. right. */
7703 rel--;
7704 continue;
7619e7c7 7705 }
252b5132 7706 }
7619e7c7 7707 break;
727fc41e
AM
7708
7709 case R_PPC_TLSGD:
e054468f 7710 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
727fc41e
AM
7711 {
7712 unsigned int insn2;
7713 bfd_vma offset = rel->r_offset;
7714
7715 if ((tls_mask & TLS_TPRELGD) != 0)
7716 {
7717 /* IE */
7718 r_type = R_PPC_NONE;
7719 insn2 = 0x7c631214; /* add 3,3,2 */
7720 }
7721 else
7722 {
7723 /* LE */
7724 r_type = R_PPC_TPREL16_LO;
7725 rel->r_offset += d_offset;
7726 insn2 = 0x38630000; /* addi 3,3,0 */
7727 }
7728 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7729 bfd_put_32 (output_bfd, insn2, contents + offset);
7730 /* Zap the reloc on the _tls_get_addr call too. */
7731 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 7732 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
7733 }
7734 break;
7735
7736 case R_PPC_TLSLD:
e054468f 7737 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
727fc41e
AM
7738 {
7739 unsigned int insn2;
7740
7741 for (r_symndx = 0;
7742 r_symndx < symtab_hdr->sh_info;
7743 r_symndx++)
7744 if (local_sections[r_symndx] == sec)
7745 break;
7746 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 7747 r_symndx = STN_UNDEF;
727fc41e 7748 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 7749 if (r_symndx != STN_UNDEF)
727fc41e
AM
7750 rel->r_addend -= (local_syms[r_symndx].st_value
7751 + sec->output_offset
7752 + sec->output_section->vma);
7753
7754 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7755 rel->r_offset += d_offset;
7756 insn2 = 0x38630000; /* addi 3,3,0 */
7757 bfd_put_32 (output_bfd, insn2,
7758 contents + rel->r_offset - d_offset);
7759 /* Zap the reloc on the _tls_get_addr call too. */
7760 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
f58d5a2d 7761 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
727fc41e
AM
7762 rel--;
7763 continue;
7764 }
7765 break;
7619e7c7
AM
7766 }
7767
7768 /* Handle other relocations that tweak non-addend part of insn. */
7769 branch_bit = 0;
7770 switch (r_type)
7771 {
7772 default:
7773 break;
7774
7775 /* Branch taken prediction relocations. */
7776 case R_PPC_ADDR14_BRTAKEN:
7777 case R_PPC_REL14_BRTAKEN:
7778 branch_bit = BRANCH_PREDICT_BIT;
7779 /* Fall thru */
7780
4cc11e76 7781 /* Branch not taken prediction relocations. */
7619e7c7
AM
7782 case R_PPC_ADDR14_BRNTAKEN:
7783 case R_PPC_REL14_BRNTAKEN:
91d6fa6a
NC
7784 {
7785 bfd_vma insn;
7619e7c7 7786
91d6fa6a
NC
7787 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7788 insn &= ~BRANCH_PREDICT_BIT;
7789 insn |= branch_bit;
7619e7c7 7790
91d6fa6a
NC
7791 from = (rel->r_offset
7792 + input_section->output_offset
7793 + input_section->output_section->vma);
7619e7c7 7794
91d6fa6a
NC
7795 /* Invert 'y' bit if not the default. */
7796 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7797 insn ^= BRANCH_PREDICT_BIT;
7798
7799 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7800 break;
7801 }
252b5132
RH
7802 }
7803
e054468f 7804 ifunc = NULL;
25f23106 7805 if (!htab->is_vxworks)
e054468f 7806 {
de972ffa
AM
7807 struct plt_entry *ent;
7808
e054468f
AM
7809 if (h != NULL)
7810 {
7811 if (h->type == STT_GNU_IFUNC)
7812 ifunc = &h->plt.plist;
7813 }
de972ffa
AM
7814 else if (local_got_offsets != NULL
7815 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
e054468f 7816 {
de972ffa 7817 struct plt_entry **local_plt;
e054468f 7818
de972ffa
AM
7819 local_plt = (struct plt_entry **) (local_got_offsets
7820 + symtab_hdr->sh_info);
7821 ifunc = local_plt + r_symndx;
e054468f 7822 }
e054468f 7823
de972ffa
AM
7824 ent = NULL;
7825 if (ifunc != NULL
7826 && (!info->shared
7827 || is_branch_reloc (r_type)))
7828 {
7829 addend = 0;
a877a2b6 7830 if (r_type == R_PPC_PLTREL24 && info->shared)
de972ffa
AM
7831 addend = rel->r_addend;
7832 ent = find_plt_ent (ifunc, got2, addend);
7833 }
7834 if (ent != NULL)
7835 {
e054468f
AM
7836 if (h == NULL && (ent->plt.offset & 1) == 0)
7837 {
7838 Elf_Internal_Rela rela;
7839 bfd_byte *loc;
7840
7841 rela.r_offset = (htab->iplt->output_section->vma
7842 + htab->iplt->output_offset
7843 + ent->plt.offset);
7844 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7845 rela.r_addend = relocation;
25f23106
AM
7846 loc = htab->reliplt->contents;
7847 loc += (htab->reliplt->reloc_count++
7848 * sizeof (Elf32_External_Rela));
e054468f
AM
7849 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7850
7851 ent->plt.offset |= 1;
7852 }
7853 if (h == NULL && (ent->glink_offset & 1) == 0)
7854 {
a7f2871e
AM
7855 unsigned char *p = ((unsigned char *) htab->glink->contents
7856 + ent->glink_offset);
7857 write_glink_stub (ent, htab->iplt, p, info);
e054468f
AM
7858 ent->glink_offset |= 1;
7859 }
7860
7861 unresolved_reloc = FALSE;
7862 if (htab->plt_type == PLT_NEW
7863 || !htab->elf.dynamic_sections_created
7864 || h == NULL)
7865 relocation = (htab->glink->output_section->vma
7866 + htab->glink->output_offset
7867 + (ent->glink_offset & ~1));
7868 else
7869 relocation = (htab->plt->output_section->vma
7870 + htab->plt->output_offset
7871 + ent->plt.offset);
7872 }
7873 }
7874
7619e7c7
AM
7875 addend = rel->r_addend;
7876 tls_type = 0;
7877 howto = NULL;
55fd94b0
AM
7878 if (r_type < R_PPC_max)
7879 howto = ppc_elf_howto_table[r_type];
7619e7c7 7880 switch (r_type)
252b5132
RH
7881 {
7882 default:
25f53a85 7883 info->callbacks->einfo
8de848d8 7884 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
d003868e 7885 input_bfd, (int) r_type, sym_name);
252b5132
RH
7886
7887 bfd_set_error (bfd_error_bad_value);
b34976b6 7888 ret = FALSE;
252b5132
RH
7889 continue;
7890
7619e7c7
AM
7891 case R_PPC_NONE:
7892 case R_PPC_TLS:
727fc41e
AM
7893 case R_PPC_TLSGD:
7894 case R_PPC_TLSLD:
7619e7c7
AM
7895 case R_PPC_EMB_MRKREF:
7896 case R_PPC_GNU_VTINHERIT:
7897 case R_PPC_GNU_VTENTRY:
7595d193
L
7898 continue;
7899
7619e7c7
AM
7900 /* GOT16 relocations. Like an ADDR16 using the symbol's
7901 address in the GOT as relocation value instead of the
7902 symbol's value itself. Also, create a GOT entry for the
7903 symbol and put the symbol value there. */
7904 case R_PPC_GOT_TLSGD16:
7905 case R_PPC_GOT_TLSGD16_LO:
7906 case R_PPC_GOT_TLSGD16_HI:
7907 case R_PPC_GOT_TLSGD16_HA:
7908 tls_type = TLS_TLS | TLS_GD;
7909 goto dogot;
7910
7911 case R_PPC_GOT_TLSLD16:
7912 case R_PPC_GOT_TLSLD16_LO:
7913 case R_PPC_GOT_TLSLD16_HI:
7914 case R_PPC_GOT_TLSLD16_HA:
7915 tls_type = TLS_TLS | TLS_LD;
7916 goto dogot;
7917
7918 case R_PPC_GOT_TPREL16:
7919 case R_PPC_GOT_TPREL16_LO:
7920 case R_PPC_GOT_TPREL16_HI:
7921 case R_PPC_GOT_TPREL16_HA:
7922 tls_type = TLS_TLS | TLS_TPREL;
7923 goto dogot;
7924
7925 case R_PPC_GOT_DTPREL16:
7926 case R_PPC_GOT_DTPREL16_LO:
7927 case R_PPC_GOT_DTPREL16_HI:
7928 case R_PPC_GOT_DTPREL16_HA:
7929 tls_type = TLS_TLS | TLS_DTPREL;
7930 goto dogot;
7931
7932 case R_PPC_GOT16:
7933 case R_PPC_GOT16_LO:
7934 case R_PPC_GOT16_HI:
7935 case R_PPC_GOT16_HA:
727fc41e 7936 tls_mask = 0;
7619e7c7
AM
7937 dogot:
7938 {
7939 /* Relocation is to the entry for this symbol in the global
7940 offset table. */
7941 bfd_vma off;
7942 bfd_vma *offp;
7943 unsigned long indx;
7944
7945 if (htab->got == NULL)
7946 abort ();
7947
7948 indx = 0;
7949 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 7950 && (h == NULL
f5385ebf 7951 || !h->def_dynamic))
7619e7c7
AM
7952 offp = &htab->tlsld_got.offset;
7953 else if (h != NULL)
7954 {
7955 bfd_boolean dyn;
7956 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 7957 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM
7958 || (info->shared
7959 && SYMBOL_REFERENCES_LOCAL (info, h)))
7960 /* This is actually a static link, or it is a
7961 -Bsymbolic link and the symbol is defined
7962 locally, or the symbol was forced to be local
7963 because of a version file. */
7964 ;
7965 else
7966 {
14acf4dc 7967 BFD_ASSERT (h->dynindx != -1);
7619e7c7
AM
7968 indx = h->dynindx;
7969 unresolved_reloc = FALSE;
7970 }
7971 offp = &h->got.offset;
7972 }
7973 else
7974 {
7975 if (local_got_offsets == NULL)
7976 abort ();
7977 offp = &local_got_offsets[r_symndx];
7978 }
7979
7980 /* The offset must always be a multiple of 4. We use the
7981 least significant bit to record whether we have already
7982 processed this entry. */
7983 off = *offp;
7984 if ((off & 1) != 0)
7985 off &= ~1;
7986 else
7987 {
70bccea4
AM
7988 unsigned int tls_m = (tls_mask
7989 & (TLS_LD | TLS_GD | TLS_DTPREL
7990 | TLS_TPREL | TLS_TPRELGD));
7991
7992 if (offp == &htab->tlsld_got.offset)
7993 tls_m = TLS_LD;
7994 else if (h == NULL
f5385ebf 7995 || !h->def_dynamic)
70bccea4
AM
7996 tls_m &= ~TLS_LD;
7997
7998 /* We might have multiple got entries for this sym.
7999 Initialize them all. */
8000 do
7619e7c7 8001 {
70bccea4
AM
8002 int tls_ty = 0;
8003
8004 if ((tls_m & TLS_LD) != 0)
7619e7c7 8005 {
70bccea4
AM
8006 tls_ty = TLS_TLS | TLS_LD;
8007 tls_m &= ~TLS_LD;
8008 }
8009 else if ((tls_m & TLS_GD) != 0)
8010 {
8011 tls_ty = TLS_TLS | TLS_GD;
8012 tls_m &= ~TLS_GD;
8013 }
8014 else if ((tls_m & TLS_DTPREL) != 0)
8015 {
8016 tls_ty = TLS_TLS | TLS_DTPREL;
8017 tls_m &= ~TLS_DTPREL;
8018 }
8019 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8020 {
8021 tls_ty = TLS_TLS | TLS_TPREL;
8022 tls_m = 0;
7619e7c7 8023 }
7619e7c7 8024
70bccea4 8025 /* Generate relocs for the dynamic linker. */
4e795f50 8026 if ((info->shared || indx != 0)
d6e14abc
AM
8027 && (offp == &htab->tlsld_got.offset
8028 || h == NULL
4e795f50
AM
8029 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8030 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 8031 {
91e21fb7 8032 asection *rsec = htab->relgot;
91d6fa6a 8033 bfd_byte * loc;
91e21fb7 8034
0bed072f
AM
8035 if (ifunc != NULL)
8036 rsec = htab->reliplt;
70bccea4
AM
8037 outrel.r_offset = (htab->got->output_section->vma
8038 + htab->got->output_offset
8039 + off);
e515b051 8040 outrel.r_addend = 0;
70bccea4
AM
8041 if (tls_ty & (TLS_LD | TLS_GD))
8042 {
8043 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM
8044 if (tls_ty == (TLS_TLS | TLS_GD))
8045 {
25f23106
AM
8046 loc = rsec->contents;
8047 loc += (rsec->reloc_count++
70bccea4
AM
8048 * sizeof (Elf32_External_Rela));
8049 bfd_elf32_swap_reloca_out (output_bfd,
8050 &outrel, loc);
e515b051 8051 outrel.r_offset += 4;
70bccea4
AM
8052 outrel.r_info
8053 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM
8054 }
8055 }
8056 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8057 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8058 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8059 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
25f23106 8060 else if (indx != 0)
70bccea4 8061 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
25f23106
AM
8062 else if (ifunc != NULL)
8063 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8064 else
8065 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
d6e14abc 8066 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
e515b051
AM
8067 {
8068 outrel.r_addend += relocation;
8069 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 8070 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 8071 }
25f23106
AM
8072 loc = rsec->contents;
8073 loc += (rsec->reloc_count++
70bccea4
AM
8074 * sizeof (Elf32_External_Rela));
8075 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM
8076 }
8077
70bccea4
AM
8078 /* Init the .got section contents if we're not
8079 emitting a reloc. */
8080 else
7619e7c7 8081 {
70bccea4
AM
8082 bfd_vma value = relocation;
8083
7b609f53
AM
8084 if (tls_ty == (TLS_TLS | TLS_LD))
8085 value = 1;
8086 else if (tls_ty != 0)
70bccea4 8087 {
e1918d23 8088 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 8089 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 8090 value += DTP_OFFSET - TP_OFFSET;
70bccea4 8091
7b609f53
AM
8092 if (tls_ty == (TLS_TLS | TLS_GD))
8093 {
8094 bfd_put_32 (output_bfd, value,
8095 htab->got->contents + off + 4);
8096 value = 1;
8097 }
70bccea4 8098 }
70bccea4
AM
8099 bfd_put_32 (output_bfd, value,
8100 htab->got->contents + off);
7619e7c7 8101 }
70bccea4
AM
8102
8103 off += 4;
8104 if (tls_ty & (TLS_LD | TLS_GD))
8105 off += 4;
7619e7c7 8106 }
70bccea4
AM
8107 while (tls_m != 0);
8108
8109 off = *offp;
8110 *offp = off | 1;
7619e7c7
AM
8111 }
8112
8113 if (off >= (bfd_vma) -2)
8114 abort ();
8115
70bccea4
AM
8116 if ((tls_type & TLS_TLS) != 0)
8117 {
8118 if (tls_type != (TLS_TLS | TLS_LD))
8119 {
8120 if ((tls_mask & TLS_LD) != 0
8121 && !(h == NULL
f5385ebf 8122 || !h->def_dynamic))
70bccea4
AM
8123 off += 8;
8124 if (tls_type != (TLS_TLS | TLS_GD))
8125 {
8126 if ((tls_mask & TLS_GD) != 0)
8127 off += 8;
8128 if (tls_type != (TLS_TLS | TLS_DTPREL))
8129 {
8130 if ((tls_mask & TLS_DTPREL) != 0)
8131 off += 4;
8132 }
8133 }
8134 }
8135 }
8136
e87d4038
AM
8137 relocation = (htab->got->output_section->vma
8138 + htab->got->output_offset
8139 + off
8140 - SYM_VAL (htab->elf.hgot));
7619e7c7
AM
8141
8142 /* Addends on got relocations don't make much sense.
8143 x+off@got is actually x@got+off, and since the got is
8144 generated by a hash table traversal, the value in the
8145 got at entry m+n bears little relation to the entry m. */
8146 if (addend != 0)
25f53a85 8147 info->callbacks->einfo
8de848d8 8148 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
25f53a85 8149 input_bfd, input_section, rel->r_offset,
7b609f53 8150 howto->name,
7619e7c7
AM
8151 sym_name);
8152 }
70bccea4 8153 break;
7619e7c7 8154
252b5132 8155 /* Relocations that need no special processing. */
7619e7c7 8156 case R_PPC_LOCAL24PC:
252b5132
RH
8157 /* It makes no sense to point a local relocation
8158 at a symbol not in this object. */
7b609f53 8159 if (unresolved_reloc)
252b5132 8160 {
464e1740
ILT
8161 if (! (*info->callbacks->undefined_symbol) (info,
8162 h->root.root.string,
8163 input_bfd,
8164 input_section,
5cc7c785 8165 rel->r_offset,
b34976b6
AM
8166 TRUE))
8167 return FALSE;
252b5132
RH
8168 continue;
8169 }
8170 break;
8171
7619e7c7
AM
8172 case R_PPC_DTPREL16:
8173 case R_PPC_DTPREL16_LO:
8174 case R_PPC_DTPREL16_HI:
8175 case R_PPC_DTPREL16_HA:
e1918d23 8176 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8177 break;
8178
70bccea4
AM
8179 /* Relocations that may need to be propagated if this is a shared
8180 object. */
7619e7c7
AM
8181 case R_PPC_TPREL16:
8182 case R_PPC_TPREL16_LO:
8183 case R_PPC_TPREL16_HI:
8184 case R_PPC_TPREL16_HA:
766bc656
AM
8185 if (h != NULL
8186 && h->root.type == bfd_link_hash_undefweak
8187 && h->dynindx == -1)
8188 {
8189 /* Make this relocation against an undefined weak symbol
8190 resolve to zero. This is really just a tweak, since
8191 code using weak externs ought to check that they are
8192 defined before using them. */
8193 bfd_byte *p = contents + rel->r_offset - d_offset;
8194 unsigned int insn = bfd_get_32 (output_bfd, p);
8195 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8196 if (insn != 0)
8197 bfd_put_32 (output_bfd, insn, p);
8198 break;
8199 }
e1918d23 8200 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8201 /* The TPREL16 relocs shouldn't really be used in shared
8202 libs as they will result in DT_TEXTREL being set, but
8203 support them anyway. */
8204 goto dodyn;
8205
8206 case R_PPC_TPREL32:
e1918d23 8207 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM
8208 goto dodyn;
8209
8210 case R_PPC_DTPREL32:
e1918d23 8211 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM
8212 goto dodyn;
8213
e515b051
AM
8214 case R_PPC_DTPMOD32:
8215 relocation = 1;
8216 addend = 0;
8217 goto dodyn;
8218
d7128ce4
AM
8219 case R_PPC_REL16:
8220 case R_PPC_REL16_LO:
8221 case R_PPC_REL16_HI:
8222 case R_PPC_REL16_HA:
8223 break;
8224
7619e7c7 8225 case R_PPC_REL32:
625af618
AM
8226 if (h == NULL || h == htab->elf.hgot)
8227 break;
8228 /* fall through */
8229
8230 case R_PPC_ADDR32:
8231 case R_PPC_ADDR16:
8232 case R_PPC_ADDR16_LO:
8233 case R_PPC_ADDR16_HI:
8234 case R_PPC_ADDR16_HA:
8235 case R_PPC_UADDR32:
8236 case R_PPC_UADDR16:
8237 goto dodyn;
8238
b9c361e0
JL
8239 case R_PPC_VLE_REL8:
8240 case R_PPC_VLE_REL15:
8241 case R_PPC_VLE_REL24:
625af618 8242 case R_PPC_REL24:
7619e7c7
AM
8243 case R_PPC_REL14:
8244 case R_PPC_REL14_BRTAKEN:
8245 case R_PPC_REL14_BRNTAKEN:
252b5132
RH
8246 /* If these relocations are not to a named symbol, they can be
8247 handled right here, no need to bother the dynamic linker. */
89200bf8 8248 if (SYMBOL_CALLS_LOCAL (info, h)
3b36f7e6 8249 || h == htab->elf.hgot)
252b5132 8250 break;
70bccea4 8251 /* fall through */
252b5132 8252
7619e7c7 8253 case R_PPC_ADDR24:
7619e7c7
AM
8254 case R_PPC_ADDR14:
8255 case R_PPC_ADDR14_BRTAKEN:
8256 case R_PPC_ADDR14_BRNTAKEN:
625af618
AM
8257 if (h != NULL && !info->shared)
8258 break;
8259 /* fall through */
8260
7619e7c7 8261 dodyn:
3348747a
NS
8262 if ((input_section->flags & SEC_ALLOC) == 0
8263 || is_vxworks_tls)
c87b5a93 8264 break;
c87b5a93 8265
ee05f2fe 8266 if ((info->shared
89200bf8
AM
8267 && !(h != NULL
8268 && ((h->root.type == bfd_link_hash_undefined
8269 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8270 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8271 || (h->root.type == bfd_link_hash_undefweak
8272 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
1d483afe 8273 && (must_be_dyn_reloc (info, r_type)
f6c52c13 8274 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM
8275 || (ELIMINATE_COPY_RELOCS
8276 && !info->shared
ee05f2fe
AM
8277 && h != NULL
8278 && h->dynindx != -1
f5385ebf 8279 && !h->non_got_ref
de972ffa 8280 && !h->def_regular))
252b5132 8281 {
0bb2d96a 8282 int skip;
f95f8542
AM
8283 bfd_byte *loc;
8284 asection *sreloc;
252b5132 8285#ifdef DEBUG
55fd94b0
AM
8286 fprintf (stderr, "ppc_elf_relocate_section needs to "
8287 "create relocation for %s\n",
70bccea4
AM
8288 (h && h->root.root.string
8289 ? h->root.root.string : "<unknown>"));
252b5132
RH
8290#endif
8291
8292 /* When generating a shared object, these relocations
70bccea4
AM
8293 are copied into the output file to be resolved at run
8294 time. */
f95f8542
AM
8295 sreloc = elf_section_data (input_section)->sreloc;
8296 if (ifunc)
8297 sreloc = htab->reliplt;
252b5132 8298 if (sreloc == NULL)
f95f8542 8299 return FALSE;
252b5132 8300
0bb2d96a 8301 skip = 0;
5b914448
AM
8302 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8303 input_section,
8304 rel->r_offset);
0bb2d96a
JJ
8305 if (outrel.r_offset == (bfd_vma) -1
8306 || outrel.r_offset == (bfd_vma) -2)
8307 skip = (int) outrel.r_offset;
252b5132
RH
8308 outrel.r_offset += (input_section->output_section->vma
8309 + input_section->output_offset);
8310
8311 if (skip)
8312 memset (&outrel, 0, sizeof outrel);
89200bf8
AM
8313 else if ((h != NULL
8314 && (h->root.type == bfd_link_hash_undefined
8315 || h->root.type == bfd_link_hash_undefweak))
8316 || !SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 8317 {
14acf4dc 8318 BFD_ASSERT (h->dynindx != -1);
7619e7c7 8319 unresolved_reloc = FALSE;
252b5132
RH
8320 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8321 outrel.r_addend = rel->r_addend;
8322 }
8323 else
8324 {
47388f4c
AM
8325 outrel.r_addend = relocation + rel->r_addend;
8326
25f23106 8327 if (r_type != R_PPC_ADDR32)
252b5132 8328 {
89200bf8 8329 long indx = 0;
252b5132 8330
25f23106
AM
8331 if (ifunc != NULL)
8332 {
8333 /* If we get here when building a static
8334 executable, then the libc startup function
8335 responsible for applying indirect function
8336 relocations is going to complain about
8337 the reloc type.
8338 If we get here when building a dynamic
8339 executable, it will be because we have
8340 a text relocation. The dynamic loader
8341 will set the text segment writable and
8342 non-executable to apply text relocations.
8343 So we'll segfault when trying to run the
8344 indirection function to resolve the reloc. */
25f53a85 8345 info->callbacks->einfo
8de848d8 8346 (_("%P: %H: relocation %s for indirect "
25f53a85
AM
8347 "function %s unsupported\n"),
8348 input_bfd, input_section, rel->r_offset,
25f23106
AM
8349 howto->name,
8350 sym_name);
8351 ret = FALSE;
8352 }
cf35638d 8353 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
89200bf8 8354 ;
252b5132
RH
8355 else if (sec == NULL || sec->owner == NULL)
8356 {
8357 bfd_set_error (bfd_error_bad_value);
89200bf8 8358 ret = FALSE;
252b5132
RH
8359 }
8360 else
8361 {
8362 asection *osec;
8363
47388f4c
AM
8364 /* We are turning this relocation into one
8365 against a section symbol. It would be
8366 proper to subtract the symbol's value,
8367 osec->vma, from the emitted reloc addend,
25f23106
AM
8368 but ld.so expects buggy relocs.
8369 FIXME: Why not always use a zero index? */
252b5132
RH
8370 osec = sec->output_section;
8371 indx = elf_section_data (osec)->dynindx;
74541ad4
AM
8372 if (indx == 0)
8373 {
8374 osec = htab->elf.text_index_section;
8375 indx = elf_section_data (osec)->dynindx;
8376 }
8377 BFD_ASSERT (indx != 0);
252b5132 8378#ifdef DEBUG
74541ad4 8379 if (indx == 0)
e460dd0d 8380 printf ("indx=%ld section=%s flags=%08x name=%s\n",
55fd94b0
AM
8381 indx, osec->name, osec->flags,
8382 h->root.root.string);
252b5132
RH
8383#endif
8384 }
8385
8386 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132 8387 }
25f23106
AM
8388 else if (ifunc != NULL)
8389 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8390 else
8391 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH
8392 }
8393
947216bf
AM
8394 loc = sreloc->contents;
8395 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8396 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 8397
2243deae 8398 if (skip == -1)
252b5132 8399 continue;
2243deae
L
8400
8401 /* This reloc will be computed at runtime. We clear the memory
8402 so that it contains predictable value. */
8403 if (! skip
8404 && ((input_section->flags & SEC_ALLOC) != 0
8405 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8406 {
8407 relocation = howto->pc_relative ? outrel.r_offset : 0;
8408 addend = 0;
8409 break;
8410 }
252b5132 8411 }
252b5132
RH
8412 break;
8413
32af9f6e
AM
8414 case R_PPC_RELAX_PLT:
8415 case R_PPC_RELAX_PLTREL24:
de972ffa
AM
8416 if (h != NULL)
8417 {
32af9f6e
AM
8418 struct plt_entry *ent;
8419 bfd_vma got2_addend = 0;
8420
8421 if (r_type == R_PPC_RELAX_PLTREL24)
8422 {
8423 if (info->shared)
8424 got2_addend = addend;
8425 addend = 0;
8426 }
8427 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
de972ffa
AM
8428 if (htab->plt_type == PLT_NEW)
8429 relocation = (htab->glink->output_section->vma
8430 + htab->glink->output_offset
8431 + ent->glink_offset);
8432 else
8433 relocation = (htab->plt->output_section->vma
8434 + htab->plt->output_offset
8435 + ent->plt.offset);
8436 }
b4a38de6
AM
8437 /* Fall thru */
8438
32af9f6e
AM
8439 case R_PPC_RELAX:
8440 if (info->shared)
8441 relocation -= (input_section->output_section->vma
8442 + input_section->output_offset
8443 + rel->r_offset - 4);
b4a38de6 8444
9abc968f
AM
8445 {
8446 unsigned long t0;
8447 unsigned long t1;
8448
8449 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
8450 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
8451
8452 /* We're clearing the bits for R_PPC_ADDR16_HA
8453 and R_PPC_ADDR16_LO here. */
8454 t0 &= ~0xffff;
8455 t1 &= ~0xffff;
8456
8457 /* t0 is HA, t1 is LO */
8458 relocation += addend;
8459 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
8460 t1 |= relocation & 0xffff;
8461
8462 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
8463 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
9bc4e62b
NS
8464
8465 /* Rewrite the reloc and convert one of the trailing nop
8466 relocs to describe this relocation. */
8467 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8468 /* The relocs are at the bottom 2 bytes */
8469 rel[0].r_offset += 2;
8470 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8471 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8472 rel[1].r_offset += 4;
8473 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8474 rel++;
9abc968f 8475 }
8517fae7 8476 continue;
deaaf2f3 8477
70bccea4 8478 /* Indirect .sdata relocation. */
7619e7c7 8479 case R_PPC_EMB_SDAI16:
c9a2f333 8480 BFD_ASSERT (htab->sdata[0].section != NULL);
bd6c6e2b
AM
8481 if (!is_static_defined (htab->sdata[0].sym))
8482 {
8483 unresolved_reloc = TRUE;
8484 break;
8485 }
7619e7c7 8486 relocation
76750a2f
AM
8487 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8488 h, relocation, rel);
bd6c6e2b 8489 addend = 0;
252b5132
RH
8490 break;
8491
70bccea4 8492 /* Indirect .sdata2 relocation. */
7619e7c7 8493 case R_PPC_EMB_SDA2I16:
c9a2f333 8494 BFD_ASSERT (htab->sdata[1].section != NULL);
bd6c6e2b
AM
8495 if (!is_static_defined (htab->sdata[1].sym))
8496 {
8497 unresolved_reloc = TRUE;
8498 break;
8499 }
7619e7c7 8500 relocation
76750a2f
AM
8501 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8502 h, relocation, rel);
bd6c6e2b 8503 addend = 0;
252b5132
RH
8504 break;
8505
70bccea4
AM
8506 /* Handle the TOC16 reloc. We want to use the offset within the .got
8507 section, not the actual VMA. This is appropriate when generating
8508 an embedded ELF object, for which the .got section acts like the
8509 AIX .toc section. */
7619e7c7 8510 case R_PPC_TOC16: /* phony GOT16 relocations */
3b4f3a11
AM
8511 if (sec == NULL || sec->output_section == NULL)
8512 {
8513 unresolved_reloc = TRUE;
8514 break;
8515 }
a0f49396
NC
8516 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8517 ".got") == 0
8518 || strcmp (bfd_get_section_name (sec->owner, sec),
8519 ".cgot") == 0);
252b5132 8520
3b4f3a11 8521 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH
8522 break;
8523
7619e7c7 8524 case R_PPC_PLTREL24:
f75e0e33
AM
8525 if (h != NULL && ifunc == NULL)
8526 {
8527 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8528 info->shared ? addend : 0);
8529 if (ent == NULL
8530 || htab->plt == NULL)
8531 {
8532 /* We didn't make a PLT entry for this symbol. This
8533 happens when statically linking PIC code, or when
8534 using -Bsymbolic. */
8535 }
8536 else
8537 {
8538 /* Relocation is to the entry for this symbol in the
8539 procedure linkage table. */
8540 unresolved_reloc = FALSE;
8541 if (htab->plt_type == PLT_NEW)
8542 relocation = (htab->glink->output_section->vma
8543 + htab->glink->output_offset
8544 + ent->glink_offset);
8545 else
8546 relocation = (htab->plt->output_section->vma
8547 + htab->plt->output_offset
8548 + ent->plt.offset);
8549 }
8550 }
252b5132 8551
f75e0e33
AM
8552 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8553 addend specifies the GOT pointer offset within .got2.
8554 Don't apply it to the relocation field. */
8555 addend = 0;
8da6118f 8556 break;
252b5132 8557
70bccea4 8558 /* Relocate against _SDA_BASE_. */
7619e7c7 8559 case R_PPC_SDAREL16:
252b5132
RH
8560 {
8561 const char *name;
bd6c6e2b 8562 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
252b5132 8563
bd6c6e2b
AM
8564 if (sec == NULL
8565 || sec->output_section == NULL
8566 || !is_static_defined (sda))
3b4f3a11
AM
8567 {
8568 unresolved_reloc = TRUE;
8569 break;
8570 }
bd6c6e2b 8571 addend -= SYM_VAL (sda);
3b4f3a11 8572
a0f49396 8573 name = bfd_get_section_name (output_bfd, sec->output_section);
0112cd26 8574 if (! ((CONST_STRNEQ (name, ".sdata")
5f819128 8575 && (name[6] == 0 || name[6] == '.'))
0112cd26 8576 || (CONST_STRNEQ (name, ".sbss")
5f819128 8577 && (name[5] == 0 || name[5] == '.'))))
252b5132 8578 {
25f53a85 8579 info->callbacks->einfo
8de848d8 8580 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 8581 "in the wrong output section (%s)\n"),
d003868e 8582 input_bfd,
55fd94b0
AM
8583 sym_name,
8584 howto->name,
8585 name);
252b5132 8586 }
252b5132
RH
8587 }
8588 break;
8589
70bccea4 8590 /* Relocate against _SDA2_BASE_. */
7619e7c7 8591 case R_PPC_EMB_SDA2REL:
252b5132
RH
8592 {
8593 const char *name;
bd6c6e2b 8594 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
252b5132 8595
bd6c6e2b
AM
8596 if (sec == NULL
8597 || sec->output_section == NULL
8598 || !is_static_defined (sda))
3b4f3a11
AM
8599 {
8600 unresolved_reloc = TRUE;
8601 break;
8602 }
bd6c6e2b 8603 addend -= SYM_VAL (sda);
3b4f3a11 8604
a0f49396 8605 name = bfd_get_section_name (output_bfd, sec->output_section);
0112cd26
NC
8606 if (! (CONST_STRNEQ (name, ".sdata2")
8607 || CONST_STRNEQ (name, ".sbss2")))
252b5132 8608 {
25f53a85 8609 info->callbacks->einfo
8de848d8 8610 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 8611 "in the wrong output section (%s)\n"),
d003868e 8612 input_bfd,
55fd94b0
AM
8613 sym_name,
8614 howto->name,
8615 name);
252b5132 8616 }
252b5132
RH
8617 }
8618 break;
8619
b9c361e0
JL
8620 case R_PPC_VLE_LO16A:
8621 relocation = (relocation + addend) & 0xffff;
8622 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8623 relocation, split16a_type);
8624 continue;
8625
8626 case R_PPC_VLE_LO16D:
8627 relocation = (relocation + addend) & 0xffff;
8628 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8629 relocation, split16d_type);
8630 continue;
8631
8632 case R_PPC_VLE_HI16A:
8633 relocation = ((relocation + addend) >> 16) & 0xffff;
8634 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8635 relocation, split16a_type);
8636 continue;
8637
8638 case R_PPC_VLE_HI16D:
8639 relocation = ((relocation + addend) >> 16) & 0xffff;
8640 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8641 relocation, split16d_type);
8642 continue;
8643
8644 case R_PPC_VLE_HA16A:
8645 {
8646 bfd_vma value = relocation + addend;
8647 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8648 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8649 value, split16a_type);
8650 }
8651 continue;
8652
8653 case R_PPC_VLE_HA16D:
8654 {
8655 bfd_vma value = relocation + addend;
8656 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8657 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8658 value, split16d_type);
8659 }
8660 continue;
8661
70bccea4 8662 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7 8663 case R_PPC_EMB_SDA21:
b9c361e0 8664 case R_PPC_VLE_SDA21:
7619e7c7 8665 case R_PPC_EMB_RELSDA:
b9c361e0 8666 case R_PPC_VLE_SDA21_LO:
252b5132
RH
8667 {
8668 const char *name;
8669 int reg;
bd6c6e2b 8670 struct elf_link_hash_entry *sda = NULL;
252b5132 8671
3b4f3a11
AM
8672 if (sec == NULL || sec->output_section == NULL)
8673 {
8674 unresolved_reloc = TRUE;
8675 break;
8676 }
8677
a0f49396 8678 name = bfd_get_section_name (output_bfd, sec->output_section);
0112cd26 8679 if (((CONST_STRNEQ (name, ".sdata")
5f819128 8680 && (name[6] == 0 || name[6] == '.'))
0112cd26 8681 || (CONST_STRNEQ (name, ".sbss")
5f819128 8682 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH
8683 {
8684 reg = 13;
bd6c6e2b 8685 sda = htab->sdata[0].sym;
252b5132 8686 }
0112cd26
NC
8687 else if (CONST_STRNEQ (name, ".sdata2")
8688 || CONST_STRNEQ (name, ".sbss2"))
252b5132
RH
8689 {
8690 reg = 2;
bd6c6e2b 8691 sda = htab->sdata[1].sym;
252b5132 8692 }
8da6118f
KH
8693 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8694 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH
8695 {
8696 reg = 0;
8697 }
252b5132
RH
8698 else
8699 {
25f53a85 8700 info->callbacks->einfo
8de848d8 8701 (_("%P: %B: the target (%s) of a %s relocation is "
25f53a85 8702 "in the wrong output section (%s)\n"),
d003868e 8703 input_bfd,
55fd94b0
AM
8704 sym_name,
8705 howto->name,
8706 name);
252b5132
RH
8707
8708 bfd_set_error (bfd_error_bad_value);
b34976b6 8709 ret = FALSE;
252b5132
RH
8710 continue;
8711 }
8712
bd6c6e2b
AM
8713 if (sda != NULL)
8714 {
8715 if (!is_static_defined (sda))
8716 {
8717 unresolved_reloc = TRUE;
8718 break;
8719 }
8720 addend -= SYM_VAL (sda);
8721 }
8722
b9c361e0
JL
8723 if (reg == 0
8724 && (r_type == R_PPC_VLE_SDA21
8725 || r_type == R_PPC_VLE_SDA21_LO))
8726 {
8727 /* Use the split20 format. */
8728 bfd_vma insn, bits12to15, bits21to31;
8729 bfd_vma value = (relocation + rel->r_offset) & 0xffff;
8730 /* Propagate sign bit, if necessary. */
8731 insn = (value & 0x8000) ? 0x70107800 : 0x70000000;
8732 bits12to15 = value & 0x700;
8733 bits21to31 = value & 0x7ff;
8734 insn |= bits12to15;
8735 insn |= bits21to31;
8736 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8737 continue;
8738 }
8739 else if (r_type == R_PPC_EMB_SDA21
8740 || r_type == R_PPC_VLE_SDA21
8741 || r_type == R_PPC_VLE_SDA21_LO)
91d6fa6a
NC
8742 {
8743 bfd_vma insn; /* Fill in register field. */
8744
7619e7c7 8745 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 8746 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 8747 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH
8748 }
8749 }
8750 break;
8751
b9c361e0
JL
8752 case R_PPC_VLE_SDAREL_LO16A:
8753 case R_PPC_VLE_SDAREL_LO16D:
8754 case R_PPC_VLE_SDAREL_HI16A:
8755 case R_PPC_VLE_SDAREL_HI16D:
8756 case R_PPC_VLE_SDAREL_HA16A:
8757 case R_PPC_VLE_SDAREL_HA16D:
8758 {
8759 bfd_vma value;
8760 const char *name;
8761 //int reg;
8762 struct elf_link_hash_entry *sda = NULL;
8763
8764 if (sec == NULL || sec->output_section == NULL)
8765 {
8766 unresolved_reloc = TRUE;
8767 break;
8768 }
8769
a0f49396 8770 name = bfd_get_section_name (output_bfd, sec->output_section);
b9c361e0
JL
8771 if (((CONST_STRNEQ (name, ".sdata")
8772 && (name[6] == 0 || name[6] == '.'))
8773 || (CONST_STRNEQ (name, ".sbss")
8774 && (name[5] == 0 || name[5] == '.'))))
8775 {
8776 //reg = 13;
8777 sda = htab->sdata[0].sym;
8778 }
8779 else if (CONST_STRNEQ (name, ".sdata2")
8780 || CONST_STRNEQ (name, ".sbss2"))
8781 {
8782 //reg = 2;
8783 sda = htab->sdata[1].sym;
8784 }
8785 else
8786 {
8787 (*_bfd_error_handler)
8788 (_("%B: the target (%s) of a %s relocation is "
8789 "in the wrong output section (%s)"),
8790 input_bfd,
8791 sym_name,
8792 howto->name,
8793 name);
8794
8795 bfd_set_error (bfd_error_bad_value);
8796 ret = FALSE;
8797 continue;
8798 }
8799
8800 if (sda != NULL)
8801 {
8802 if (!is_static_defined (sda))
8803 {
8804 unresolved_reloc = TRUE;
8805 break;
8806 }
8807 }
8808
8809 value = sda->root.u.def.section->output_section->vma
8810 + sda->root.u.def.section->output_offset;
8811
8812 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8813 {
8814 value = (value + addend) & 0xffff;
8815 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8816 value, split16a_type);
8817 }
8818 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8819 {
8820 value = (value + addend) & 0xffff;
8821 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8822 value, split16d_type);
8823 }
8824 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8825 {
8826 value = ((value + addend) >> 16) & 0xffff;
8827 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8828 value, split16a_type);
8829 }
8830 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8831 {
8832 value = ((value + addend) >> 16) & 0xffff;
8833 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8834 value, split16d_type);
8835 }
8836 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
8837 {
8838 value += addend;
8839 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8840 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8841 value, split16a_type);
8842 }
8843 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
8844 {
8845 value += addend;
8846 value = (((value >> 16) + ((value & 0x8000) ? 1 : 0)) & 0xffff);
8847 ppc_elf_vle_split16 (output_bfd, contents, rel->r_offset,
8848 value, split16d_type);
8849 }
8850 }
8851 continue;
8852
70bccea4 8853 /* Relocate against the beginning of the section. */
7619e7c7
AM
8854 case R_PPC_SECTOFF:
8855 case R_PPC_SECTOFF_LO:
8856 case R_PPC_SECTOFF_HI:
8857 case R_PPC_SECTOFF_HA:
3b4f3a11
AM
8858 if (sec == NULL || sec->output_section == NULL)
8859 {
8860 unresolved_reloc = TRUE;
8861 break;
8862 }
252b5132 8863 addend -= sec->output_section->vma;
252b5132
RH
8864 break;
8865
70bccea4 8866 /* Negative relocations. */
7619e7c7
AM
8867 case R_PPC_EMB_NADDR32:
8868 case R_PPC_EMB_NADDR16:
8869 case R_PPC_EMB_NADDR16_LO:
8870 case R_PPC_EMB_NADDR16_HI:
8871 case R_PPC_EMB_NADDR16_HA:
8da6118f 8872 addend -= 2 * relocation;
252b5132
RH
8873 break;
8874
7619e7c7
AM
8875 case R_PPC_COPY:
8876 case R_PPC_GLOB_DAT:
8877 case R_PPC_JMP_SLOT:
8878 case R_PPC_RELATIVE:
e054468f 8879 case R_PPC_IRELATIVE:
7619e7c7
AM
8880 case R_PPC_PLT32:
8881 case R_PPC_PLTREL32:
8882 case R_PPC_PLT16_LO:
8883 case R_PPC_PLT16_HI:
8884 case R_PPC_PLT16_HA:
8885 case R_PPC_ADDR30:
8886 case R_PPC_EMB_RELSEC16:
8887 case R_PPC_EMB_RELST_LO:
8888 case R_PPC_EMB_RELST_HI:
8889 case R_PPC_EMB_RELST_HA:
8890 case R_PPC_EMB_BIT_FLD:
25f53a85 8891 info->callbacks->einfo
8de848d8 8892 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
d003868e 8893 input_bfd,
7619e7c7
AM
8894 howto->name,
8895 sym_name);
252b5132
RH
8896
8897 bfd_set_error (bfd_error_invalid_operation);
b34976b6 8898 ret = FALSE;
252b5132 8899 continue;
7619e7c7 8900 }
252b5132 8901
7619e7c7
AM
8902 /* Do any further special processing. */
8903 switch (r_type)
8904 {
8905 default:
8906 break;
8907
8908 case R_PPC_ADDR16_HA:
d7128ce4 8909 case R_PPC_REL16_HA:
7619e7c7
AM
8910 case R_PPC_SECTOFF_HA:
8911 case R_PPC_TPREL16_HA:
8912 case R_PPC_DTPREL16_HA:
7619e7c7
AM
8913 case R_PPC_EMB_NADDR16_HA:
8914 case R_PPC_EMB_RELST_HA:
8915 /* It's just possible that this symbol is a weak symbol
7b609f53 8916 that's not actually defined anywhere. In that case,
7619e7c7
AM
8917 'sec' would be NULL, and we should leave the symbol
8918 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
8919 if (sec == NULL)
8920 break;
8921 /* Fall thru */
8922
8923 case R_PPC_PLT16_HA:
8924 case R_PPC_GOT16_HA:
8925 case R_PPC_GOT_TLSGD16_HA:
8926 case R_PPC_GOT_TLSLD16_HA:
8927 case R_PPC_GOT_TPREL16_HA:
8928 case R_PPC_GOT_DTPREL16_HA:
8929 /* Add 0x10000 if sign bit in 0:15 is set.
8930 Bits 0:15 are not used. */
8931 addend += 0x8000;
7619e7c7 8932 break;
1fe532cf
AM
8933
8934 case R_PPC_ADDR16:
8935 case R_PPC_ADDR16_LO:
8936 case R_PPC_GOT16:
8937 case R_PPC_GOT16_LO:
8938 case R_PPC_SDAREL16:
8939 case R_PPC_SECTOFF:
8940 case R_PPC_SECTOFF_LO:
8941 case R_PPC_DTPREL16:
8942 case R_PPC_DTPREL16_LO:
8943 case R_PPC_TPREL16:
8944 case R_PPC_TPREL16_LO:
8945 case R_PPC_GOT_TLSGD16:
8946 case R_PPC_GOT_TLSGD16_LO:
8947 case R_PPC_GOT_TLSLD16:
8948 case R_PPC_GOT_TLSLD16_LO:
8949 case R_PPC_GOT_DTPREL16:
8950 case R_PPC_GOT_DTPREL16_LO:
8951 case R_PPC_GOT_TPREL16:
8952 case R_PPC_GOT_TPREL16_LO:
8953 {
8954 /* The 32-bit ABI lacks proper relocations to deal with
8955 certain 64-bit instructions. Prevent damage to bits
8956 that make up part of the insn opcode. */
8957 unsigned int insn, mask, lobit;
8958
8959 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
8960 mask = 0;
8961 if (is_insn_ds_form (insn))
8962 mask = 3;
8963 else if (is_insn_dq_form (insn))
8964 mask = 15;
8965 else
8966 break;
8967 lobit = mask & (relocation + addend);
8968 if (lobit != 0)
8969 {
8970 addend -= lobit;
8971 info->callbacks->einfo
8972 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
8973 input_bfd, input_section, rel->r_offset,
8974 howto->name, sym_name, mask + 1);
8975 bfd_set_error (bfd_error_bad_value);
8976 ret = FALSE;
8977 }
8978 addend += insn & mask;
8979 }
8980 break;
252b5132
RH
8981 }
8982
252b5132 8983#ifdef DEBUG
55fd94b0
AM
8984 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
8985 "offset = %ld, addend = %ld\n",
252b5132 8986 howto->name,
8da6118f 8987 (int) r_type,
252b5132
RH
8988 sym_name,
8989 r_symndx,
7619e7c7 8990 (long) rel->r_offset,
8da6118f 8991 (long) addend);
252b5132
RH
8992#endif
8993
7619e7c7
AM
8994 if (unresolved_reloc
8995 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
8996 && h->def_dynamic)
8997 && _bfd_elf_section_offset (output_bfd, info, input_section,
8998 rel->r_offset) != (bfd_vma) -1)
7619e7c7 8999 {
25f53a85 9000 info->callbacks->einfo
8de848d8 9001 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
25f53a85 9002 input_bfd, input_section, rel->r_offset,
7b609f53 9003 howto->name,
7619e7c7
AM
9004 sym_name);
9005 ret = FALSE;
9006 }
9007
252b5132
RH
9008 r = _bfd_final_link_relocate (howto,
9009 input_bfd,
9010 input_section,
9011 contents,
7619e7c7 9012 rel->r_offset,
252b5132
RH
9013 relocation,
9014 addend);
9015
7619e7c7 9016 if (r != bfd_reloc_ok)
252b5132 9017 {
7619e7c7 9018 if (r == bfd_reloc_overflow)
252b5132 9019 {
7619e7c7
AM
9020 if (warned)
9021 continue;
9022 if (h != NULL
9023 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH
9024 && howto->pc_relative)
9025 {
9026 /* Assume this is a call protected by other code that
9027 detect the symbol is undefined. If this is the case,
9028 we can safely ignore the overflow. If not, the
9029 program is hosed anyway, and a little warning isn't
9030 going to help. */
252b5132 9031
dc1bc0c9
RH
9032 continue;
9033 }
252b5132 9034
7619e7c7 9035 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 9036 (h ? &h->root : NULL),
7619e7c7
AM
9037 sym_name,
9038 howto->name,
9039 rel->r_addend,
9040 input_bfd,
9041 input_section,
9042 rel->r_offset))
9043 return FALSE;
dc1bc0c9
RH
9044 }
9045 else
9046 {
25f53a85 9047 info->callbacks->einfo
8de848d8 9048 (_("%P: %H: %s reloc against `%s': error %d\n"),
25f53a85
AM
9049 input_bfd, input_section, rel->r_offset,
9050 howto->name, sym_name, (int) r);
7619e7c7 9051 ret = FALSE;
252b5132
RH
9052 }
9053 }
9054 }
9055
252b5132
RH
9056#ifdef DEBUG
9057 fprintf (stderr, "\n");
9058#endif
9059
9060 return ret;
9061}
252b5132 9062\f
25dbc73a
AM
9063/* Finish up dynamic symbol handling. We set the contents of various
9064 dynamic sections here. */
c5fccbec 9065
b34976b6 9066static bfd_boolean
25dbc73a
AM
9067ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9068 struct bfd_link_info *info,
9069 struct elf_link_hash_entry *h,
9070 Elf_Internal_Sym *sym)
e1a9cb8e 9071{
25dbc73a 9072 struct ppc_elf_link_hash_table *htab;
a6aa5195
AM
9073 struct plt_entry *ent;
9074 bfd_boolean doneone;
e1a9cb8e 9075
25dbc73a
AM
9076#ifdef DEBUG
9077 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9078 h->root.root.string);
9079#endif
e1a9cb8e 9080
25dbc73a
AM
9081 htab = ppc_elf_hash_table (info);
9082 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 9083
a6aa5195
AM
9084 doneone = FALSE;
9085 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9086 if (ent->plt.offset != (bfd_vma) -1)
9087 {
9088 if (!doneone)
9089 {
9090 Elf_Internal_Rela rela;
9091 bfd_byte *loc;
9092 bfd_vma reloc_index;
e1a9cb8e 9093
e054468f 9094 if (htab->plt_type == PLT_NEW
25f23106
AM
9095 || !htab->elf.dynamic_sections_created
9096 || h->dynindx == -1)
9d8504b1
PB
9097 reloc_index = ent->plt.offset / 4;
9098 else
9099 {
9100 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9101 / htab->plt_slot_size);
9102 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
4a3dc543 9103 && htab->plt_type == PLT_OLD)
9d8504b1
PB
9104 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9105 }
9106
a6aa5195
AM
9107 /* This symbol has an entry in the procedure linkage table.
9108 Set it up. */
e054468f 9109 if (htab->plt_type == PLT_VXWORKS
25f23106
AM
9110 && htab->elf.dynamic_sections_created
9111 && h->dynindx != -1)
a6aa5195 9112 {
9d8504b1
PB
9113 bfd_vma got_offset;
9114 const bfd_vma *plt_entry;
5b914448 9115
9d8504b1
PB
9116 /* The first three entries in .got.plt are reserved. */
9117 got_offset = (reloc_index + 3) * 4;
9118
9119 /* Use the right PLT. */
9120 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9121 : ppc_elf_vxworks_plt_entry;
9122
9123 /* Fill in the .plt on VxWorks. */
9124 if (info->shared)
9125 {
9d8504b1 9126 bfd_put_32 (output_bfd,
e87d4038 9127 plt_entry[0] | PPC_HA (got_offset),
9d8504b1
PB
9128 htab->plt->contents + ent->plt.offset + 0);
9129 bfd_put_32 (output_bfd,
e87d4038 9130 plt_entry[1] | PPC_LO (got_offset),
9d8504b1
PB
9131 htab->plt->contents + ent->plt.offset + 4);
9132 }
9133 else
9134 {
e87d4038 9135 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9d8504b1
PB
9136
9137 bfd_put_32 (output_bfd,
e87d4038 9138 plt_entry[0] | PPC_HA (got_loc),
9d8504b1
PB
9139 htab->plt->contents + ent->plt.offset + 0);
9140 bfd_put_32 (output_bfd,
e87d4038 9141 plt_entry[1] | PPC_LO (got_loc),
9d8504b1
PB
9142 htab->plt->contents + ent->plt.offset + 4);
9143 }
9144
9145 bfd_put_32 (output_bfd, plt_entry[2],
9146 htab->plt->contents + ent->plt.offset + 8);
9147 bfd_put_32 (output_bfd, plt_entry[3],
9148 htab->plt->contents + ent->plt.offset + 12);
9149
9150 /* This instruction is an immediate load. The value loaded is
9151 the byte offset of the R_PPC_JMP_SLOT relocation from the
9152 start of the .rela.plt section. The value is stored in the
9153 low-order 16 bits of the load instruction. */
9154 /* NOTE: It appears that this is now an index rather than a
9155 prescaled offset. */
5b914448 9156 bfd_put_32 (output_bfd,
9d8504b1
PB
9157 plt_entry[4] | reloc_index,
9158 htab->plt->contents + ent->plt.offset + 16);
9159 /* This instruction is a PC-relative branch whose target is
9160 the start of the PLT section. The address of this branch
9161 instruction is 20 bytes beyond the start of this PLT entry.
9162 The address is encoded in bits 6-29, inclusive. The value
9163 stored is right-shifted by two bits, permitting a 26-bit
9164 offset. */
5b914448
AM
9165 bfd_put_32 (output_bfd,
9166 (plt_entry[5]
9d8504b1
PB
9167 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9168 htab->plt->contents + ent->plt.offset + 20);
9169 bfd_put_32 (output_bfd, plt_entry[6],
9170 htab->plt->contents + ent->plt.offset + 24);
9171 bfd_put_32 (output_bfd, plt_entry[7],
9172 htab->plt->contents + ent->plt.offset + 28);
9173
9174 /* Fill in the GOT entry corresponding to this PLT slot with
a8685210 9175 the address immediately after the "bctr" instruction
9d8504b1
PB
9176 in this PLT entry. */
9177 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9178 + htab->plt->output_offset
9179 + ent->plt.offset + 16),
9180 htab->sgotplt->contents + got_offset);
9181
9182 if (!info->shared)
9183 {
9184 /* Fill in a couple of entries in .rela.plt.unloaded. */
9185 loc = htab->srelplt2->contents
9186 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9187 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9188 * sizeof (Elf32_External_Rela));
9189
9190 /* Provide the @ha relocation for the first instruction. */
9191 rela.r_offset = (htab->plt->output_section->vma
9192 + htab->plt->output_offset
9193 + ent->plt.offset + 2);
636ce3f5 9194 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
9195 R_PPC_ADDR16_HA);
9196 rela.r_addend = got_offset;
9197 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9198 loc += sizeof (Elf32_External_Rela);
9199
9200 /* Provide the @l relocation for the second instruction. */
9201 rela.r_offset = (htab->plt->output_section->vma
9202 + htab->plt->output_offset
9203 + ent->plt.offset + 6);
636ce3f5 9204 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9d8504b1
PB
9205 R_PPC_ADDR16_LO);
9206 rela.r_addend = got_offset;
9207 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9208 loc += sizeof (Elf32_External_Rela);
9209
9210 /* Provide a relocation for the GOT entry corresponding to this
9211 PLT slot. Point it at the middle of the .plt entry. */
9212 rela.r_offset = (htab->sgotplt->output_section->vma
9213 + htab->sgotplt->output_offset
9214 + got_offset);
7325306f 9215 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9d8504b1
PB
9216 R_PPC_ADDR32);
9217 rela.r_addend = ent->plt.offset + 16;
9218 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9219 }
9220
9221 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9222 In particular, the offset for the relocation is not the
9223 address of the PLT entry for this function, as specified
9224 by the ABI. Instead, the offset is set to the address of
9225 the GOT slot for this function. See EABI 4.4.4.1. */
9226 rela.r_offset = (htab->sgotplt->output_section->vma
9227 + htab->sgotplt->output_offset
9228 + got_offset);
9229
a6aa5195
AM
9230 }
9231 else
9232 {
e054468f 9233 asection *splt = htab->plt;
25f23106
AM
9234 if (!htab->elf.dynamic_sections_created
9235 || h->dynindx == -1)
e054468f
AM
9236 splt = htab->iplt;
9237
9238 rela.r_offset = (splt->output_section->vma
9239 + splt->output_offset
9d8504b1 9240 + ent->plt.offset);
e054468f 9241 if (htab->plt_type == PLT_OLD
25f23106
AM
9242 || !htab->elf.dynamic_sections_created
9243 || h->dynindx == -1)
9d8504b1
PB
9244 {
9245 /* We don't need to fill in the .plt. The ppc dynamic
9246 linker will fill it in. */
9247 }
9248 else
9249 {
9250 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9251 + htab->glink->output_section->vma
9252 + htab->glink->output_offset);
9253 bfd_put_32 (output_bfd, val,
e054468f 9254 splt->contents + ent->plt.offset);
9d8504b1 9255 }
a6aa5195 9256 }
e1a9cb8e 9257
a6aa5195 9258 /* Fill in the entry in the .rela.plt section. */
a6aa5195 9259 rela.r_addend = 0;
e054468f
AM
9260 if (!htab->elf.dynamic_sections_created
9261 || h->dynindx == -1)
9262 {
9263 BFD_ASSERT (h->type == STT_GNU_IFUNC
9264 && h->def_regular
9265 && (h->root.type == bfd_link_hash_defined
9266 || h->root.type == bfd_link_hash_defweak));
9267 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9268 rela.r_addend = SYM_VAL (h);
9269 }
9270 else
9271 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
e1a9cb8e 9272
25f23106
AM
9273 if (!htab->elf.dynamic_sections_created
9274 || h->dynindx == -1)
9275 loc = (htab->reliplt->contents
9276 + (htab->reliplt->reloc_count++
9277 * sizeof (Elf32_External_Rela)));
e054468f 9278 else
25f23106
AM
9279 loc = (htab->relplt->contents
9280 + reloc_index * sizeof (Elf32_External_Rela));
a6aa5195 9281 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 9282
a6aa5195
AM
9283 if (!h->def_regular)
9284 {
0eb4a168
AM
9285 /* Mark the symbol as undefined, rather than as
9286 defined in the .plt section. Leave the value if
9287 there were any relocations where pointer equality
9288 matters (this is a clue for the dynamic linker, to
9289 make function pointer comparisons work between an
9290 application and shared library), otherwise set it
9291 to zero. */
a6aa5195 9292 sym->st_shndx = SHN_UNDEF;
0eb4a168 9293 if (!h->pointer_equality_needed)
a6aa5195 9294 sym->st_value = 0;
0eb4a168
AM
9295 else if (!h->ref_regular_nonweak)
9296 {
625af618
AM
9297 /* This breaks function pointer comparisons, but
9298 that is better than breaking tests for a NULL
0eb4a168 9299 function pointer. */
0eb4a168
AM
9300 sym->st_value = 0;
9301 }
a6aa5195 9302 }
de972ffa
AM
9303 else if (h->type == STT_GNU_IFUNC
9304 && !info->shared)
9305 {
9306 /* Set the value of ifunc symbols in a non-pie
9307 executable to the glink entry. This is to avoid
9308 text relocations. We can't do this for ifunc in
9309 allocate_dynrelocs, as we do for normal dynamic
9310 function symbols with plt entries, because we need
9311 to keep the original value around for the ifunc
9312 relocation. */
9313 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9314 (output_bfd, htab->glink->output_section));
5b914448
AM
9315 sym->st_value = (ent->glink_offset
9316 + htab->glink->output_offset
de972ffa
AM
9317 + htab->glink->output_section->vma);
9318 }
a6aa5195
AM
9319 doneone = TRUE;
9320 }
e1a9cb8e 9321
e054468f 9322 if (htab->plt_type == PLT_NEW
25f23106
AM
9323 || !htab->elf.dynamic_sections_created
9324 || h->dynindx == -1)
a6aa5195 9325 {
a7f2871e 9326 unsigned char *p;
e054468f 9327 asection *splt = htab->plt;
25f23106
AM
9328 if (!htab->elf.dynamic_sections_created
9329 || h->dynindx == -1)
e054468f 9330 splt = htab->iplt;
e1a9cb8e 9331
a7f2871e
AM
9332 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9333
9334 if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
9335 {
9336 bfd_put_32 (output_bfd, LWZ_11_3, p);
9337 p += 4;
9338 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9339 p += 4;
9340 bfd_put_32 (output_bfd, MR_0_3, p);
9341 p += 4;
9342 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9343 p += 4;
9344 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9345 p += 4;
9346 bfd_put_32 (output_bfd, BEQLR, p);
9347 p += 4;
9348 bfd_put_32 (output_bfd, MR_3_0, p);
9349 p += 4;
9350 bfd_put_32 (output_bfd, NOP, p);
9351 p += 4;
9352 }
9353
9354 write_glink_stub (ent, splt, p, info);
e1a9cb8e 9355
a877a2b6 9356 if (!info->shared)
e054468f
AM
9357 /* We only need one non-PIC glink stub. */
9358 break;
a6aa5195
AM
9359 }
9360 else
9361 break;
9362 }
e1a9cb8e 9363
25dbc73a
AM
9364 if (h->needs_copy)
9365 {
9366 asection *s;
9367 Elf_Internal_Rela rela;
9368 bfd_byte *loc;
e1a9cb8e 9369
25dbc73a 9370 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 9371
25dbc73a
AM
9372#ifdef DEBUG
9373 fprintf (stderr, ", copy");
9374#endif
e1a9cb8e 9375
25dbc73a 9376 BFD_ASSERT (h->dynindx != -1);
86bbe32f 9377
4dc4a9a5 9378 if (ppc_elf_hash_entry (h)->has_sda_refs)
25dbc73a
AM
9379 s = htab->relsbss;
9380 else
9381 s = htab->relbss;
9382 BFD_ASSERT (s != NULL);
e1a9cb8e 9383
e87d4038 9384 rela.r_offset = SYM_VAL (h);
25dbc73a
AM
9385 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9386 rela.r_addend = 0;
9387 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9388 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9389 }
e1a9cb8e 9390
25dbc73a
AM
9391#ifdef DEBUG
9392 fprintf (stderr, "\n");
9393#endif
e1a9cb8e 9394
25dbc73a
AM
9395 return TRUE;
9396}
9397\f
9398static enum elf_reloc_type_class
7e612e98
AM
9399ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9400 const asection *rel_sec,
9401 const Elf_Internal_Rela *rela)
e1a9cb8e 9402{
7e612e98
AM
9403 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9404
9405 if (rel_sec == htab->reliplt)
9406 return reloc_class_ifunc;
9407
25dbc73a
AM
9408 switch (ELF32_R_TYPE (rela->r_info))
9409 {
9410 case R_PPC_RELATIVE:
9411 return reloc_class_relative;
25dbc73a
AM
9412 case R_PPC_JMP_SLOT:
9413 return reloc_class_plt;
9414 case R_PPC_COPY:
9415 return reloc_class_copy;
9416 default:
9417 return reloc_class_normal;
9418 }
e1a9cb8e 9419}
25dbc73a
AM
9420\f
9421/* Finish up the dynamic sections. */
e1a9cb8e 9422
25dbc73a
AM
9423static bfd_boolean
9424ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9425 struct bfd_link_info *info)
e1a9cb8e 9426{
25dbc73a 9427 asection *sdyn;
9d8504b1 9428 asection *splt;
25dbc73a 9429 struct ppc_elf_link_hash_table *htab;
1fe44d79 9430 bfd_vma got;
e87d4038
AM
9431 bfd *dynobj;
9432 bfd_boolean ret = TRUE;
e1a9cb8e 9433
25dbc73a
AM
9434#ifdef DEBUG
9435 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9436#endif
6b0817e5 9437
25dbc73a 9438 htab = ppc_elf_hash_table (info);
9d8504b1 9439 dynobj = elf_hash_table (info)->dynobj;
3d4d4302 9440 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9d8504b1 9441 if (htab->is_vxworks)
3d4d4302 9442 splt = bfd_get_linker_section (dynobj, ".plt");
9d8504b1
PB
9443 else
9444 splt = NULL;
e1a9cb8e 9445
1fe44d79
AM
9446 got = 0;
9447 if (htab->elf.hgot != NULL)
e87d4038 9448 got = SYM_VAL (htab->elf.hgot);
1fe44d79 9449
25dbc73a 9450 if (htab->elf.dynamic_sections_created)
e1a9cb8e 9451 {
25dbc73a 9452 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 9453
25dbc73a 9454 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 9455
25dbc73a
AM
9456 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9457 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9458 for (; dyncon < dynconend; dyncon++)
9459 {
9460 Elf_Internal_Dyn dyn;
9461 asection *s;
e1a9cb8e 9462
9d8504b1 9463 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
86bbe32f 9464
25dbc73a
AM
9465 switch (dyn.d_tag)
9466 {
9467 case DT_PLTGOT:
9d8504b1
PB
9468 if (htab->is_vxworks)
9469 s = htab->sgotplt;
9470 else
9471 s = htab->plt;
25dbc73a
AM
9472 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9473 break;
86bbe32f 9474
25dbc73a
AM
9475 case DT_PLTRELSZ:
9476 dyn.d_un.d_val = htab->relplt->size;
9477 break;
e1a9cb8e 9478
25dbc73a
AM
9479 case DT_JMPREL:
9480 s = htab->relplt;
9481 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9482 break;
2f89ff8d 9483
1fe44d79
AM
9484 case DT_PPC_GOT:
9485 dyn.d_un.d_ptr = got;
d7128ce4
AM
9486 break;
9487
9d8504b1
PB
9488 case DT_RELASZ:
9489 if (htab->is_vxworks)
9490 {
9491 if (htab->relplt)
9492 dyn.d_un.d_ptr -= htab->relplt->size;
9493 break;
9494 }
9495 continue;
9496
25dbc73a 9497 default:
7a2b07ff
NS
9498 if (htab->is_vxworks
9499 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9500 break;
25dbc73a
AM
9501 continue;
9502 }
4c45e5c9 9503
25dbc73a
AM
9504 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9505 }
9506 }
4c45e5c9 9507
3b36f7e6 9508 if (htab->got != NULL)
25dbc73a 9509 {
e79f5955
AM
9510 if (htab->elf.hgot->root.u.def.section == htab->got
9511 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
e87d4038 9512 {
e79f5955 9513 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
2f89ff8d 9514
e87d4038
AM
9515 p += htab->elf.hgot->root.u.def.value;
9516 if (htab->plt_type == PLT_OLD)
e79f5955
AM
9517 {
9518 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9519 so that a function can easily find the address of
9520 _GLOBAL_OFFSET_TABLE_. */
9521 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9522 < htab->elf.hgot->root.u.def.section->size);
9523 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9524 }
3b36f7e6 9525
e87d4038 9526 if (sdyn != NULL)
e79f5955
AM
9527 {
9528 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9529 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9530 < htab->elf.hgot->root.u.def.section->size);
9531 bfd_put_32 (output_bfd, val, p);
9532 }
e87d4038
AM
9533 }
9534 else
9535 {
8de848d8 9536 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
25f53a85
AM
9537 htab->elf.hgot->root.root.string,
9538 (htab->sgotplt != NULL
9539 ? htab->sgotplt->name : htab->got->name));
e87d4038
AM
9540 bfd_set_error (bfd_error_bad_value);
9541 ret = FALSE;
9542 }
25dbc73a
AM
9543
9544 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
9545 }
9546
9d8504b1
PB
9547 /* Fill in the first entry in the VxWorks procedure linkage table. */
9548 if (splt && splt->size > 0)
9549 {
9550 /* Use the right PLT. */
5b914448
AM
9551 const bfd_vma *plt_entry = (info->shared
9552 ? ppc_elf_vxworks_pic_plt0_entry
9553 : ppc_elf_vxworks_plt0_entry);
9d8504b1
PB
9554
9555 if (!info->shared)
9556 {
e87d4038 9557 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9d8504b1 9558
e87d4038 9559 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9d8504b1 9560 splt->contents + 0);
e87d4038 9561 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9d8504b1
PB
9562 splt->contents + 4);
9563 }
9564 else
9565 {
9566 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
9567 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
9568 }
9569 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
9570 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
9571 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
9572 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
9573 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
9574 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
9575
9576 if (! info->shared)
9577 {
9578 Elf_Internal_Rela rela;
9579 bfd_byte *loc;
9580
9581 loc = htab->srelplt2->contents;
9582
9583 /* Output the @ha relocation for the first instruction. */
9584 rela.r_offset = (htab->plt->output_section->vma
9585 + htab->plt->output_offset
9586 + 2);
636ce3f5 9587 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
9588 rela.r_addend = 0;
9589 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9590 loc += sizeof (Elf32_External_Rela);
5b914448 9591
9d8504b1
PB
9592 /* Output the @l relocation for the second instruction. */
9593 rela.r_offset = (htab->plt->output_section->vma
9594 + htab->plt->output_offset
9595 + 6);
636ce3f5 9596 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
9597 rela.r_addend = 0;
9598 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9599 loc += sizeof (Elf32_External_Rela);
9600
9601 /* Fix up the remaining relocations. They may have the wrong
9602 symbol index for _G_O_T_ or _P_L_T_ depending on the order
9603 in which symbols were output. */
9604 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
9605 {
9606 Elf_Internal_Rela rel;
9607
9608 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 9609 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9d8504b1
PB
9610 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9611 loc += sizeof (Elf32_External_Rela);
9612
9613 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
636ce3f5 9614 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9d8504b1
PB
9615 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9616 loc += sizeof (Elf32_External_Rela);
9617
9618 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7325306f 9619 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
9d8504b1
PB
9620 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
9621 loc += sizeof (Elf32_External_Rela);
9622 }
9623 }
9624 }
9625
e054468f
AM
9626 if (htab->glink != NULL
9627 && htab->glink->contents != NULL
9628 && htab->elf.dynamic_sections_created)
d7128ce4
AM
9629 {
9630 unsigned char *p;
9631 unsigned char *endp;
a6aa5195 9632 bfd_vma res0;
d7128ce4 9633 unsigned int i;
a6aa5195
AM
9634
9635 /*
9636 * PIC glink code is the following:
9637 *
9638 * # ith PLT code stub.
9639 * addis 11,30,(plt+(i-1)*4-got)@ha
9640 * lwz 11,(plt+(i-1)*4-got)@l(11)
9641 * mtctr 11
9642 * bctr
9643 *
9644 * # A table of branches, one for each plt entry.
176a0d42 9645 * # The idea is that the plt call stub loads ctr and r11 with these
a6aa5195
AM
9646 * # addresses, so (r11 - res_0) gives the plt index * 4.
9647 * res_0: b PLTresolve
9648 * res_1: b PLTresolve
9649 * .
9650 * # Some number of entries towards the end can be nops
9651 * res_n_m3: nop
9652 * res_n_m2: nop
9653 * res_n_m1:
9654 *
9655 * PLTresolve:
9656 * addis 11,11,(1f-res_0)@ha
9657 * mflr 0
9658 * bcl 20,31,1f
9659 * 1: addi 11,11,(1b-res_0)@l
9660 * mflr 12
9661 * mtlr 0
9662 * sub 11,11,12 # r11 = index * 4
9663 * addis 12,12,(got+4-1b)@ha
9664 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
9665 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
9666 * mtctr 0
9667 * add 0,11,11
9668 * add 11,0,11 # r11 = index * 12 = reloc offset.
9669 * bctr
9670 */
9671 static const unsigned int pic_plt_resolve[] =
9672 {
9673 ADDIS_11_11,
9674 MFLR_0,
9675 BCL_20_31,
9676 ADDI_11_11,
9677 MFLR_12,
9678 MTLR_0,
9679 SUB_11_11_12,
9680 ADDIS_12_12,
9681 LWZ_0_12,
9682 LWZ_12_12,
9683 MTCTR_0,
9684 ADD_0_11_11,
9685 ADD_11_0_11,
9686 BCTR,
9687 NOP,
9688 NOP
9689 };
9690
176a0d42
AM
9691 /*
9692 * Non-PIC glink code is a little simpler.
9693 *
9694 * # ith PLT code stub.
9695 * lis 11,(plt+(i-1)*4)@ha
9696 * lwz 11,(plt+(i-1)*4)@l(11)
9697 * mtctr 11
9698 * bctr
9699 *
9700 * The branch table is the same, then comes
9701 *
9702 * PLTresolve:
9703 * lis 12,(got+4)@ha
9704 * addis 11,11,(-res_0)@ha
9705 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
9706 * addi 11,11,(-res_0)@l # r11 = index * 4
9707 * mtctr 0
9708 * add 0,11,11
9709 * lwz 12,(got+8)@l(12) # got[2] contains the map address
9710 * add 11,0,11 # r11 = index * 12 = reloc offset.
9711 * bctr
9712 */
d7128ce4
AM
9713 static const unsigned int plt_resolve[] =
9714 {
a6aa5195
AM
9715 LIS_12,
9716 ADDIS_11_11,
9717 LWZ_0_12,
9718 ADDI_11_11,
d7128ce4 9719 MTCTR_0,
7e8aeb9a 9720 ADD_0_11_11,
a6aa5195 9721 LWZ_12_12,
7e8aeb9a 9722 ADD_11_0_11,
d7128ce4
AM
9723 BCTR,
9724 NOP,
9725 NOP,
a6aa5195
AM
9726 NOP,
9727 NOP,
9728 NOP,
9729 NOP,
d7128ce4
AM
9730 NOP
9731 };
9732
a6aa5195
AM
9733 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
9734 abort ();
9735 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7e8aeb9a
AM
9736 abort ();
9737
a6aa5195 9738 /* Build the branch table, one for each plt entry (less one),
86b9da88 9739 and perhaps some padding. */
a6aa5195
AM
9740 p = htab->glink->contents;
9741 p += htab->glink_pltresolve;
86b9da88
AM
9742 endp = htab->glink->contents;
9743 endp += htab->glink->size - GLINK_PLTRESOLVE;
9744 while (p < endp - 8 * 4)
9745 {
9746 bfd_put_32 (output_bfd, B + endp - p, p);
9747 p += 4;
9748 }
9749 while (p < endp)
9750 {
9751 bfd_put_32 (output_bfd, NOP, p);
9752 p += 4;
9753 }
9754
7e8aeb9a 9755 res0 = (htab->glink_pltresolve
86b9da88
AM
9756 + htab->glink->output_section->vma
9757 + htab->glink->output_offset);
9758
9759 /* Last comes the PLTresolve stub. */
a877a2b6 9760 if (info->shared)
7e8aeb9a 9761 {
a6aa5195 9762 bfd_vma bcl;
d7128ce4 9763
a6aa5195 9764 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
7e8aeb9a 9765 {
a6aa5195 9766 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
7e8aeb9a
AM
9767 p += 4;
9768 }
a6aa5195
AM
9769 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
9770
9771 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
9772 + htab->glink->output_section->vma
9773 + htab->glink->output_offset);
9774
9775 bfd_put_32 (output_bfd,
9776 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
9777 bfd_put_32 (output_bfd,
9778 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
9779 bfd_put_32 (output_bfd,
9780 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
9781 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
9782 {
9783 bfd_put_32 (output_bfd,
9784 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
9785 bfd_put_32 (output_bfd,
9786 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
9787 }
9788 else
9789 {
9790 bfd_put_32 (output_bfd,
9791 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
9792 bfd_put_32 (output_bfd,
9793 LWZ_12_12 + 4, p + 9*4);
9794 }
7e8aeb9a
AM
9795 }
9796 else
d7128ce4 9797 {
a6aa5195 9798 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
7e8aeb9a
AM
9799 {
9800 bfd_put_32 (output_bfd, plt_resolve[i], p);
9801 p += 4;
9802 }
a6aa5195
AM
9803 p -= 4 * ARRAY_SIZE (plt_resolve);
9804
9805 bfd_put_32 (output_bfd,
9806 LIS_12 + PPC_HA (got + 4), p + 0*4);
9807 bfd_put_32 (output_bfd,
9808 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
9809 bfd_put_32 (output_bfd,
9810 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
9811 if (PPC_HA (got + 4) == PPC_HA (got + 8))
9812 {
9813 bfd_put_32 (output_bfd,
9814 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
9815 bfd_put_32 (output_bfd,
9816 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
9817 }
9818 else
9819 {
9820 bfd_put_32 (output_bfd,
9821 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
9822 bfd_put_32 (output_bfd,
9823 LWZ_12_12 + 4, p + 6*4);
9824 }
d7128ce4 9825 }
d7128ce4
AM
9826 }
9827
6177242a
AM
9828 if (htab->glink_eh_frame != NULL
9829 && htab->glink_eh_frame->contents != NULL)
9830 {
9831 unsigned char *p = htab->glink_eh_frame->contents;
9832 bfd_vma val;
9833
6177242a
AM
9834 p += sizeof (glink_eh_frame_cie);
9835 /* FDE length. */
6177242a
AM
9836 p += 4;
9837 /* CIE pointer. */
6177242a
AM
9838 p += 4;
9839 /* Offset to .glink. */
9840 val = (htab->glink->output_section->vma
9841 + htab->glink->output_offset);
9842 val -= (htab->glink_eh_frame->output_section->vma
9843 + htab->glink_eh_frame->output_offset);
9844 val -= p - htab->glink_eh_frame->contents;
9845 bfd_put_32 (htab->elf.dynobj, val, p);
6177242a 9846
dbaa2011 9847 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
6177242a
AM
9848 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
9849 htab->glink_eh_frame,
9850 htab->glink_eh_frame->contents))
9851 return FALSE;
9852 }
9853
e87d4038 9854 return ret;
25dbc73a 9855}
e1a9cb8e 9856\f
252b5132
RH
9857#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
9858#define TARGET_LITTLE_NAME "elf32-powerpcle"
9859#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
9860#define TARGET_BIG_NAME "elf32-powerpc"
9861#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 9862#define ELF_TARGET_ID PPC32_ELF_DATA
252b5132 9863#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC
9864#ifdef __QNXTARGET__
9865#define ELF_MAXPAGESIZE 0x1000
9866#else
252b5132 9867#define ELF_MAXPAGESIZE 0x10000
d0facd1b 9868#endif
b1342370 9869#define ELF_MINPAGESIZE 0x1000
24718e3b 9870#define ELF_COMMONPAGESIZE 0x1000
252b5132
RH
9871#define elf_info_to_howto ppc_elf_info_to_howto
9872
9873#ifdef EM_CYGNUS_POWERPC
9874#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
9875#endif
9876
9877#ifdef EM_PPC_OLD
9878#define ELF_MACHINE_ALT2 EM_PPC_OLD
9879#endif
9880
9881#define elf_backend_plt_not_loaded 1
252b5132 9882#define elf_backend_can_gc_sections 1
51b64d56 9883#define elf_backend_can_refcount 1
b491616a 9884#define elf_backend_rela_normal 1
252b5132 9885
43c40ab2 9886#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 9887#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 9888#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132 9889#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
b9c361e0 9890#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
252b5132 9891#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 9892#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
468392fb 9893#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
252b5132 9894
feee612b 9895#define elf_backend_object_p ppc_elf_object_p
252b5132
RH
9896#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
9897#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
9898#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
9899#define elf_backend_relocate_section ppc_elf_relocate_section
9900#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
9901#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 9902#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH
9903#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
9904#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
9905#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
0eb4a168 9906#define elf_backend_hash_symbol ppc_elf_hash_symbol
252b5132
RH
9907#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
9908#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
9909#define elf_backend_fake_sections ppc_elf_fake_sections
9910#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
b9c361e0 9911#define elf_backend_modify_segment_map ppc_elf_modify_segment_map
c5fccbec
DJ
9912#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
9913#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
183e98be 9914#define elf_backend_write_core_note ppc_elf_write_core_note
29c2fb7c 9915#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM
9916#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
9917#define elf_backend_final_write_processing ppc_elf_final_write_processing
9918#define elf_backend_write_section ppc_elf_write_section
551b43fd 9919#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
4c45e5c9 9920#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8a696751 9921#define elf_backend_action_discarded ppc_elf_action_discarded
74541ad4 9922#define elf_backend_init_index_section _bfd_elf_init_1_index_section
e054468f 9923#define elf_backend_post_process_headers _bfd_elf_set_osabi
b9c361e0 9924#define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
b9c361e0 9925#define elf_backend_section_processing ppc_elf_section_processing
252b5132
RH
9926
9927#include "elf32-target.h"
9d8504b1 9928
7b8e7dad
AM
9929/* FreeBSD Target */
9930
9931#undef TARGET_LITTLE_SYM
9932#undef TARGET_LITTLE_NAME
9933
9934#undef TARGET_BIG_SYM
9935#define TARGET_BIG_SYM bfd_elf32_powerpc_freebsd_vec
9936#undef TARGET_BIG_NAME
9937#define TARGET_BIG_NAME "elf32-powerpc-freebsd"
9938
9939#undef ELF_OSABI
9940#define ELF_OSABI ELFOSABI_FREEBSD
9941
9942#undef elf32_bed
9943#define elf32_bed elf32_powerpc_fbsd_bed
9944
9945#include "elf32-target.h"
9946
9d8504b1
PB
9947/* VxWorks Target */
9948
9949#undef TARGET_LITTLE_SYM
9950#undef TARGET_LITTLE_NAME
9951
9952#undef TARGET_BIG_SYM
9953#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
9954#undef TARGET_BIG_NAME
9955#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
9956
7b8e7dad
AM
9957#undef ELF_OSABI
9958
d5e3d971
PB
9959/* VxWorks uses the elf default section flags for .plt. */
9960static const struct bfd_elf_special_section *
9961ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
9d8504b1 9962{
d5e3d971
PB
9963 if (sec->name == NULL)
9964 return NULL;
9965
9966 if (strcmp (sec->name, ".plt") == 0)
9967 return _bfd_elf_get_sec_type_attr (abfd, sec);
9968
9969 return ppc_elf_get_sec_type_attr (abfd, sec);
9970}
9d8504b1
PB
9971
9972/* Like ppc_elf_link_hash_table_create, but overrides
9973 appropriately for VxWorks. */
9974static struct bfd_link_hash_table *
9975ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
9976{
9977 struct bfd_link_hash_table *ret;
9978
9979 ret = ppc_elf_link_hash_table_create (abfd);
9980 if (ret)
9981 {
9982 struct ppc_elf_link_hash_table *htab
9983 = (struct ppc_elf_link_hash_table *)ret;
9984 htab->is_vxworks = 1;
4a3dc543 9985 htab->plt_type = PLT_VXWORKS;
9d8504b1
PB
9986 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
9987 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
9988 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
9989 }
9990 return ret;
9991}
9992
9993/* Tweak magic VxWorks symbols as they are loaded. */
9994static bfd_boolean
9995ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
9996 struct bfd_link_info *info,
9997 Elf_Internal_Sym *sym,
9998 const char **namep ATTRIBUTE_UNUSED,
9999 flagword *flagsp ATTRIBUTE_UNUSED,
10000 asection **secp,
10001 bfd_vma *valp)
10002{
10003 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10004 valp))
10005 return FALSE;
10006
10007 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10008}
10009
9d8504b1
PB
10010static void
10011ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10012{
10013 ppc_elf_final_write_processing(abfd, linker);
10014 elf_vxworks_final_write_processing(abfd, linker);
10015}
10016
10017/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10018 define it. */
10019#undef elf_backend_want_plt_sym
10020#define elf_backend_want_plt_sym 1
10021#undef elf_backend_want_got_plt
10022#define elf_backend_want_got_plt 1
10023#undef elf_backend_got_symbol_offset
10024#define elf_backend_got_symbol_offset 0
10025#undef elf_backend_plt_not_loaded
10026#define elf_backend_plt_not_loaded 0
10027#undef elf_backend_plt_readonly
10028#define elf_backend_plt_readonly 1
10029#undef elf_backend_got_header_size
10030#define elf_backend_got_header_size 12
10031
468392fb
AM
10032#undef bfd_elf32_get_synthetic_symtab
10033
9d8504b1
PB
10034#undef bfd_elf32_bfd_link_hash_table_create
10035#define bfd_elf32_bfd_link_hash_table_create \
10036 ppc_elf_vxworks_link_hash_table_create
9d8504b1
PB
10037#undef elf_backend_add_symbol_hook
10038#define elf_backend_add_symbol_hook \
10039 ppc_elf_vxworks_add_symbol_hook
10040#undef elf_backend_link_output_symbol_hook
10041#define elf_backend_link_output_symbol_hook \
9c72ff84 10042 elf_vxworks_link_output_symbol_hook
9d8504b1
PB
10043#undef elf_backend_final_write_processing
10044#define elf_backend_final_write_processing \
10045 ppc_elf_vxworks_final_write_processing
d5e3d971
PB
10046#undef elf_backend_get_sec_type_attr
10047#define elf_backend_get_sec_type_attr \
10048 ppc_elf_vxworks_get_sec_type_attr
9d8504b1
PB
10049#undef elf_backend_emit_relocs
10050#define elf_backend_emit_relocs \
10051 elf_vxworks_emit_relocs
10052
10053#undef elf32_bed
10054#define elf32_bed ppc_elf_vxworks_bed
e054468f 10055#undef elf_backend_post_process_headers
9d8504b1
PB
10056
10057#include "elf32-target.h"